Merge branch 'drm-intel-fixes' into drm-intel-next

CREDITS

@@ -518,7 +518,7 @@ N: Zach Brown
 E: zab@zabbo.net
 D: maestro pci sound
 
-M: David Brownell
+N: David Brownell
 D: Kernel engineer, mentor, and friend.  Maintained USB EHCI and
 D: gadget layers, SPI subsystem, GPIO subsystem, and more than a few
 D: device drivers.  His encouragement also helped many engineers get

Documentation/hwmon/f71882fg

@@ -22,6 +22,10 @@ Supported chips:
     Prefix: 'f71869'
     Addresses scanned: none, address read from Super I/O config space
     Datasheet: Available from the Fintek website
+  * Fintek F71869A
+    Prefix: 'f71869a'
+    Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Not public
   * Fintek F71882FG and F71883FG
     Prefix: 'f71882fg'
     Addresses scanned: none, address read from Super I/O config space

Documentation/hwmon/k10temp

@@ -9,8 +9,8 @@ Supported chips:
   Socket S1G3: Athlon II, Sempron, Turion II
 * AMD Family 11h processors:
   Socket S1G2: Athlon (X2), Sempron (X2), Turion X2 (Ultra)
-* AMD Family 12h processors: "Llano"
-* AMD Family 14h processors: "Brazos" (C/E/G-Series)
+* AMD Family 12h processors: "Llano" (E2/A4/A6/A8-Series)
+* AMD Family 14h processors: "Brazos" (C/E/G/Z-Series)
 * AMD Family 15h processors: "Bulldozer"
 
   Prefix: 'k10temp'
@@ -20,12 +20,16 @@ Supported chips:
     http://support.amd.com/us/Processor_TechDocs/31116.pdf
   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 11h Processors:
     http://support.amd.com/us/Processor_TechDocs/41256.pdf
+  BIOS and Kernel Developer's Guide (BKDG) for AMD Family 12h Processors:
+    http://support.amd.com/us/Processor_TechDocs/41131.pdf
   BIOS and Kernel Developer's Guide (BKDG) for AMD Family 14h Models 00h-0Fh Processors:
     http://support.amd.com/us/Processor_TechDocs/43170.pdf
   Revision Guide for AMD Family 10h Processors:
     http://support.amd.com/us/Processor_TechDocs/41322.pdf
   Revision Guide for AMD Family 11h Processors:
     http://support.amd.com/us/Processor_TechDocs/41788.pdf
+  Revision Guide for AMD Family 12h Processors:
+    http://support.amd.com/us/Processor_TechDocs/44739.pdf
   Revision Guide for AMD Family 14h Models 00h-0Fh Processors:
     http://support.amd.com/us/Processor_TechDocs/47534.pdf
   AMD Family 11h Processor Power and Thermal Data Sheet for Notebooks:

Documentation/power/runtime_pm.txt

@@ -501,13 +501,29 @@ helper functions described in Section 4.  In that case, pm_runtime_resume()
 should be used.  Of course, for this purpose the device's run-time PM has to be
 enabled earlier by calling pm_runtime_enable().
 
-If the device bus type's or driver's ->probe() or ->remove() callback runs
+If the device bus type's or driver's ->probe() callback runs
 pm_runtime_suspend() or pm_runtime_idle() or their asynchronous counterparts,
 they will fail returning -EAGAIN, because the device's usage counter is
-incremented by the core before executing ->probe() and ->remove().  Still, it
-may be desirable to suspend the device as soon as ->probe() or ->remove() has
-finished, so the PM core uses pm_runtime_idle_sync() to invoke the
-subsystem-level idle callback for the device at that time.
+incremented by the driver core before executing ->probe().  Still, it may be
+desirable to suspend the device as soon as ->probe() has finished, so the driver
+core uses pm_runtime_put_sync() to invoke the subsystem-level idle callback for
+the device at that time.
+
+Moreover, the driver core prevents runtime PM callbacks from racing with the bus
+notifier callback in __device_release_driver(), which is necessary, because the
+notifier is used by some subsystems to carry out operations affecting the
+runtime PM functionality.  It does so by calling pm_runtime_get_sync() before
+driver_sysfs_remove() and the BUS_NOTIFY_UNBIND_DRIVER notifications.  This
+resumes the device if it's in the suspended state and prevents it from
+being suspended again while those routines are being executed.
+
+To allow bus types and drivers to put devices into the suspended state by
+calling pm_runtime_suspend() from their ->remove() routines, the driver core
+executes pm_runtime_put_sync() after running the BUS_NOTIFY_UNBIND_DRIVER
+notifications in __device_release_driver().  This requires bus types and
+drivers to make their ->remove() callbacks avoid races with runtime PM directly,
+but also it allows of more flexibility in the handling of devices during the
+removal of their drivers.
 
 The user space can effectively disallow the driver of the device to power manage
 it at run time by changing the value of its /sys/devices/.../power/control

MAINTAINERS

@@ -1345,16 +1345,18 @@ F:	drivers/auxdisplay/
 F:	include/linux/cfag12864b.h
 
 AVR32 ARCHITECTURE
-M:	Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
+M:	Haavard Skinnemoen <hskinnemoen@gmail.com>
+M:	Hans-Christian Egtvedt <egtvedt@samfundet.no>
 W:	http://www.atmel.com/products/AVR32/
 W:	http://avr32linux.org/
 W:	http://avrfreaks.net/
-S:	Supported
+S:	Maintained
 F:	arch/avr32/
 
 AVR32/AT32AP MACHINE SUPPORT
-M:	Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
-S:	Supported
+M:	Haavard Skinnemoen <hskinnemoen@gmail.com>
+M:	Hans-Christian Egtvedt <egtvedt@samfundet.no>
+S:	Maintained
 F:	arch/avr32/mach-at32ap/
 
 AX.25 NETWORK LAYER
@@ -1390,7 +1392,6 @@ F:	include/linux/backlight.h
 BATMAN ADVANCED
 M:	Marek Lindner <lindner_marek@yahoo.de>
 M:	Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
-M:	Sven Eckelmann <sven@narfation.org>
 L:	b.a.t.m.a.n@lists.open-mesh.org
 W:	http://www.open-mesh.org/
 S:	Maintained
@@ -1423,7 +1424,6 @@ S:	Supported
 F:	arch/blackfin/
 
 BLACKFIN EMAC DRIVER
-M:	Michael Hennerich <michael.hennerich@analog.com>
 L:	uclinux-dist-devel@blackfin.uclinux.org
 W:	http://blackfin.uclinux.org
 S:	Supported
@@ -1639,7 +1639,7 @@ CAN NETWORK LAYER
 M:	Oliver Hartkopp <socketcan@hartkopp.net>
 M:	Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
 M:	Urs Thuermann <urs.thuermann@volkswagen.de>
-L:	socketcan-core@lists.berlios.de
+L:	socketcan-core@lists.berlios.de (subscribers-only)
 L:	netdev@vger.kernel.org
 W:	http://developer.berlios.de/projects/socketcan/
 S:	Maintained
@@ -1651,7 +1651,7 @@ F:	include/linux/can/raw.h
 
 CAN NETWORK DRIVERS
 M:	Wolfgang Grandegger <wg@grandegger.com>
-L:	socketcan-core@lists.berlios.de
+L:	socketcan-core@lists.berlios.de (subscribers-only)
 L:	netdev@vger.kernel.org
 W:	http://developer.berlios.de/projects/socketcan/
 S:	Maintained
@@ -5181,6 +5181,7 @@ S:	Supported
 F:	drivers/net/qlcnic/
 
 QLOGIC QLGE 10Gb ETHERNET DRIVER
+M:	Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
 M:	Ron Mercer <ron.mercer@qlogic.com>
 M:	linux-driver@qlogic.com
 L:	netdev@vger.kernel.org

Makefile

@@ -1,7 +1,7 @@
 VERSION = 3
 PATCHLEVEL = 0
 SUBLEVEL = 0
-EXTRAVERSION = -rc5
+EXTRAVERSION = -rc6
 NAME = Sneaky Weasel
 
 # *DOCUMENTATION*

README

@@ -1,6 +1,6 @@
-	Linux kernel release 2.6.xx <http://kernel.org/>
+	Linux kernel release 3.x <http://kernel.org/>
 
-These are the release notes for Linux version 2.6.  Read them carefully,
+These are the release notes for Linux version 3.  Read them carefully,
 as they tell you what this is all about, explain how to install the
 kernel, and what to do if something goes wrong. 
 
@@ -62,10 +62,10 @@ INSTALLING the kernel source:
    directory where you have permissions (eg. your home directory) and
    unpack it:
 
-		gzip -cd linux-2.6.XX.tar.gz | tar xvf -
+		gzip -cd linux-3.X.tar.gz | tar xvf -
 
    or
-		bzip2 -dc linux-2.6.XX.tar.bz2 | tar xvf -
+		bzip2 -dc linux-3.X.tar.bz2 | tar xvf -
 
 
    Replace "XX" with the version number of the latest kernel.
@@ -75,15 +75,15 @@ INSTALLING the kernel source:
    files.  They should match the library, and not get messed up by
    whatever the kernel-du-jour happens to be.
 
- - You can also upgrade between 2.6.xx releases by patching.  Patches are
+ - You can also upgrade between 3.x releases by patching.  Patches are
    distributed in the traditional gzip and the newer bzip2 format.  To
    install by patching, get all the newer patch files, enter the
-   top level directory of the kernel source (linux-2.6.xx) and execute:
+   top level directory of the kernel source (linux-3.x) and execute:
 
-		gzip -cd ../patch-2.6.xx.gz | patch -p1
+		gzip -cd ../patch-3.x.gz | patch -p1
 
    or
-		bzip2 -dc ../patch-2.6.xx.bz2 | patch -p1
+		bzip2 -dc ../patch-3.x.bz2 | patch -p1
 
    (repeat xx for all versions bigger than the version of your current
    source tree, _in_order_) and you should be ok.  You may want to remove
@@ -91,9 +91,9 @@ INSTALLING the kernel source:
    failed patches (xxx# or xxx.rej). If there are, either you or me has
    made a mistake.
 
-   Unlike patches for the 2.6.x kernels, patches for the 2.6.x.y kernels
+   Unlike patches for the 3.x kernels, patches for the 3.x.y kernels
    (also known as the -stable kernels) are not incremental but instead apply
-   directly to the base 2.6.x kernel.  Please read
+   directly to the base 3.x kernel.  Please read
    Documentation/applying-patches.txt for more information.
 
    Alternatively, the script patch-kernel can be used to automate this
@@ -107,14 +107,14 @@ INSTALLING the kernel source:
    an alternative directory can be specified as the second argument.
 
  - If you are upgrading between releases using the stable series patches
-   (for example, patch-2.6.xx.y), note that these "dot-releases" are
-   not incremental and must be applied to the 2.6.xx base tree. For
-   example, if your base kernel is 2.6.12 and you want to apply the
-   2.6.12.3 patch, you do not and indeed must not first apply the
-   2.6.12.1 and 2.6.12.2 patches. Similarly, if you are running kernel
-   version 2.6.12.2 and want to jump to 2.6.12.3, you must first
-   reverse the 2.6.12.2 patch (that is, patch -R) _before_ applying
-   the 2.6.12.3 patch.
+   (for example, patch-3.x.y), note that these "dot-releases" are
+   not incremental and must be applied to the 3.x base tree. For
+   example, if your base kernel is 3.0 and you want to apply the
+   3.0.3 patch, you do not and indeed must not first apply the
+   3.0.1 and 3.0.2 patches. Similarly, if you are running kernel
+   version 3.0.2 and want to jump to 3.0.3, you must first
+   reverse the 3.0.2 patch (that is, patch -R) _before_ applying
+   the 3.0.3 patch.
    You can read more on this in Documentation/applying-patches.txt
 
  - Make sure you have no stale .o files and dependencies lying around:
@@ -126,7 +126,7 @@ INSTALLING the kernel source:
 
 SOFTWARE REQUIREMENTS
 
-   Compiling and running the 2.6.xx kernels requires up-to-date
+   Compiling and running the 3.x kernels requires up-to-date
    versions of various software packages.  Consult
    Documentation/Changes for the minimum version numbers required
    and how to get updates for these packages.  Beware that using
@@ -142,11 +142,11 @@ BUILD directory for the kernel:
    Using the option "make O=output/dir" allow you to specify an alternate
    place for the output files (including .config).
    Example:
-     kernel source code:	/usr/src/linux-2.6.N
+     kernel source code:	/usr/src/linux-3.N
      build directory:		/home/name/build/kernel
 
    To configure and build the kernel use:
-   cd /usr/src/linux-2.6.N
+   cd /usr/src/linux-3.N
    make O=/home/name/build/kernel menuconfig
    make O=/home/name/build/kernel
    sudo make O=/home/name/build/kernel modules_install install

arch/arm/mach-at91/at91cap9.c

@@ -223,15 +223,15 @@ static struct clk *periph_clocks[] __initdata = {
 };
 
 static struct clk_lookup periph_clocks_lookups[] = {
-	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc.0", &utmi_clk),
-	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc.0", &udphs_clk),
+	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
+	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
 	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.0", &mmc0_clk),
 	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.1", &mmc1_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.0", &ssc0_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.1", &ssc1_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
 };
 
 static struct clk_lookup usart_clocks_lookups[] = {

arch/arm/mach-at91/at91cap9_devices.c

@@ -1220,7 +1220,7 @@ void __init at91_set_serial_console(unsigned portnr)
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91cap9_set_console_clock(portnr);
+		at91cap9_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 

arch/arm/mach-at91/at91rm9200.c

@@ -199,9 +199,9 @@ static struct clk_lookup periph_clocks_lookups[] = {
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk),
 	CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk),
 	CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.0", &ssc0_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.1", &ssc1_clk),
-	CLKDEV_CON_DEV_ID("ssc", "ssc.2", &ssc2_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
+	CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk),
 };
 
 static struct clk_lookup usart_clocks_lookups[] = {

arch/arm/mach-at91/at91rm9200_devices.c

@@ -1135,7 +1135,7 @@ void __init at91_set_serial_console(unsigned portnr)
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91rm9200_set_console_clock(portnr);
+		at91rm9200_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 

arch/arm/mach-at91/at91sam9260_devices.c

@@ -1173,7 +1173,7 @@ void __init at91_set_serial_console(unsigned portnr)
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9260_set_console_clock(portnr);
+		at91sam9260_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 

arch/arm/mach-at91/at91sam9261_devices.c

@@ -1013,7 +1013,7 @@ void __init at91_set_serial_console(unsigned portnr)
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9261_set_console_clock(portnr);
+		at91sam9261_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 

arch/arm/mach-at91/at91sam9263_devices.c

@@ -1395,7 +1395,7 @@ void __init at91_set_serial_console(unsigned portnr)
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9263_set_console_clock(portnr);
+		at91sam9263_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 

arch/arm/mach-at91/at91sam9g45.c

@@ -217,11 +217,11 @@ static struct clk *periph_clocks[] __initdata = {
 static struct clk_lookup periph_clocks_lookups[] = {
 	/* One additional fake clock for ohci */
 	CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
-	CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci.0", &uhphs_clk),
-	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc.0", &utmi_clk),
-	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc.0", &udphs_clk),
-	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.0", &mmc0_clk),
-	CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.1", &mmc1_clk),
+	CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci", &uhphs_clk),
+	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
+	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
+	CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
+	CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
 	CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk),

arch/arm/mach-at91/at91sam9g45_devices.c

@@ -1550,7 +1550,7 @@ void __init at91_set_serial_console(unsigned portnr)
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9g45_set_console_clock(portnr);
+		at91sam9g45_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 

arch/arm/mach-at91/at91sam9rl.c

@@ -191,8 +191,8 @@ static struct clk *periph_clocks[] __initdata = {
 };
 
 static struct clk_lookup periph_clocks_lookups[] = {
-	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc.0", &utmi_clk),
-	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc.0", &udphs_clk),
+	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
+	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
 	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
 	CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
 	CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),

arch/arm/mach-at91/at91sam9rl_devices.c

@@ -1168,7 +1168,7 @@ void __init at91_set_serial_console(unsigned portnr)
 {
 	if (portnr < ATMEL_MAX_UART) {
 		atmel_default_console_device = at91_uarts[portnr];
-		at91sam9rl_set_console_clock(portnr);
+		at91sam9rl_set_console_clock(at91_uarts[portnr]->id);
 	}
 }
 

arch/arm/mach-at91/board-cap9adk.c

@@ -215,7 +215,7 @@ static void __init cap9adk_add_device_nand(void)
 	csa = at91_sys_read(AT91_MATRIX_EBICSA);
 	at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 
-	cap9adk_nand_data.bus_width_16 = !board_have_nand_8bit();
+	cap9adk_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (cap9adk_nand_data.bus_width_16)
 		cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_16;

arch/arm/mach-at91/board-sam9260ek.c

@@ -214,7 +214,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;

arch/arm/mach-at91/board-sam9261ek.c

@@ -220,7 +220,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;

arch/arm/mach-at91/board-sam9263ek.c

@@ -221,7 +221,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;

arch/arm/mach-at91/board-sam9g20ek.c

@@ -198,7 +198,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;

arch/arm/mach-at91/board-sam9m10g45ek.c

@@ -178,7 +178,7 @@ static struct sam9_smc_config __initdata ek_nand_smc_config = {
 
 static void __init ek_add_device_nand(void)
 {
-	ek_nand_data.bus_width_16 = !board_have_nand_8bit();
+	ek_nand_data.bus_width_16 = board_have_nand_16bit();
 	/* setup bus-width (8 or 16) */
 	if (ek_nand_data.bus_width_16)
 		ek_nand_smc_config.mode |= AT91_SMC_DBW_16;

arch/arm/mach-at91/include/mach/system_rev.h

@@ -13,13 +13,13 @@
  * the 16-31 bit are reserved for at91 generic information
  *
  * bit 31:
- *	0 => nand 16 bit
- *	1 => nand 8 bit
+ *	0 => nand 8 bit
+ *	1 => nand 16 bit
  */
-#define BOARD_HAVE_NAND_8BIT	(1 << 31)
-static int inline board_have_nand_8bit(void)
+#define BOARD_HAVE_NAND_16BIT	(1 << 31)
+static inline int board_have_nand_16bit(void)
 {
-	return system_rev & BOARD_HAVE_NAND_8BIT;
+	return system_rev & BOARD_HAVE_NAND_16BIT;
 }
 
 #endif /* __ARCH_SYSTEM_REV_H__ */

arch/arm/mach-shmobile/board-ag5evm.c

@@ -381,7 +381,7 @@ void ag5evm_sdhi1_set_pwr(struct platform_device *pdev, int state)
 	gpio_set_value(GPIO_PORT114, state);
 }
 
-static struct sh_mobile_sdhi_info sh_sdhi1_platdata = {
+static struct sh_mobile_sdhi_info sh_sdhi1_info = {
 	.tmio_flags	= TMIO_MMC_WRPROTECT_DISABLE,
 	.tmio_caps	= MMC_CAP_NONREMOVABLE | MMC_CAP_SDIO_IRQ,
 	.tmio_ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,
@@ -413,7 +413,7 @@ static struct platform_device sdhi1_device = {
 	.name		= "sh_mobile_sdhi",
 	.id		= 1,
 	.dev		= {
-		.platform_data	= &sh_sdhi1_platdata,
+		.platform_data	= &sh_sdhi1_info,
 	},
 	.num_resources	= ARRAY_SIZE(sdhi1_resources),
 	.resource	= sdhi1_resources,

arch/arm/mach-shmobile/board-ap4evb.c

@@ -913,7 +913,7 @@ static struct i2c_board_info imx074_info = {
 	I2C_BOARD_INFO("imx074", 0x1a),
 };
 
-struct soc_camera_link imx074_link = {
+static struct soc_camera_link imx074_link = {
 	.bus_id		= 0,
 	.board_info	= &imx074_info,
 	.i2c_adapter_id	= 0,

arch/arm/mach-shmobile/board-mackerel.c

@@ -1287,9 +1287,9 @@ static struct platform_device *mackerel_devices[] __initdata = {
 	&nor_flash_device,
 	&smc911x_device,
 	&lcdc_device,
-	&usbhs0_device,
 	&usb1_host_device,
 	&usbhs1_device,
+	&usbhs0_device,
 	&leds_device,
 	&fsi_device,
 	&fsi_ak4643_device,

arch/powerpc/boot/dts/p1022ds.dts

@@ -209,8 +209,10 @@
 			wm8776:codec@1a {
 				compatible = "wlf,wm8776";
 				reg = <0x1a>;
-				/* MCLK source is a stand-alone oscillator */
-				clock-frequency = <12288000>;
+				/*
+				 * clock-frequency will be set by U-Boot if
+				 * the clock is enabled.
+				 */
 			};
 		};
 
@@ -280,7 +282,8 @@
 			codec-handle = <&wm8776>;
 			fsl,playback-dma = <&dma00>;
 			fsl,capture-dma = <&dma01>;
-			fsl,fifo-depth = <16>;
+			fsl,fifo-depth = <15>;
+			fsl,ssi-asynchronous;
 		};
 
 		dma@c300 {

arch/powerpc/configs/pseries_defconfig

@@ -148,7 +148,6 @@ CONFIG_SCSI_SAS_ATTRS=m
 CONFIG_SCSI_CXGB3_ISCSI=m
 CONFIG_SCSI_CXGB4_ISCSI=m
 CONFIG_SCSI_BNX2_ISCSI=m
-CONFIG_SCSI_BNX2_ISCSI=m
 CONFIG_BE2ISCSI=m
 CONFIG_SCSI_IBMVSCSI=y
 CONFIG_SCSI_IBMVFC=m

arch/powerpc/kernel/rtas-rtc.c

@@ -4,6 +4,7 @@
 #include <linux/init.h>
 #include <linux/rtc.h>
 #include <linux/delay.h>
+#include <linux/ratelimit.h>
 #include <asm/prom.h>
 #include <asm/rtas.h>
 #include <asm/time.h>
@@ -29,9 +30,10 @@ unsigned long __init rtas_get_boot_time(void)
 		}
 	} while (wait_time && (get_tb() < max_wait_tb));
 
-	if (error != 0 && printk_ratelimit()) {
-		printk(KERN_WARNING "error: reading the clock failed (%d)\n",
-			error);
+	if (error != 0) {
+		printk_ratelimited(KERN_WARNING
+				   "error: reading the clock failed (%d)\n",
+				   error);
 		return 0;
 	}
 
@@ -55,19 +57,21 @@ void rtas_get_rtc_time(struct rtc_time *rtc_tm)
 
 		wait_time = rtas_busy_delay_time(error);
 		if (wait_time) {
-			if (in_interrupt() && printk_ratelimit()) {
+			if (in_interrupt()) {
 				memset(rtc_tm, 0, sizeof(struct rtc_time));
-				printk(KERN_WARNING "error: reading clock"
-				       " would delay interrupt\n");
+				printk_ratelimited(KERN_WARNING
+						   "error: reading clock "
+						   "would delay interrupt\n");
 				return;	/* delay not allowed */
 			}
 			msleep(wait_time);
 		}
 	} while (wait_time && (get_tb() < max_wait_tb));
 
-        if (error != 0 && printk_ratelimit()) {
-                printk(KERN_WARNING "error: reading the clock failed (%d)\n",
-		       error);
+	if (error != 0) {
+		printk_ratelimited(KERN_WARNING
+				   "error: reading the clock failed (%d)\n",
+				   error);
 		return;
         }
 
@@ -99,9 +103,10 @@ int rtas_set_rtc_time(struct rtc_time *tm)
 		}
 	} while (wait_time && (get_tb() < max_wait_tb));
 
-        if (error != 0 && printk_ratelimit())
-                printk(KERN_WARNING "error: setting the clock failed (%d)\n",
-		       error);
+	if (error != 0)
+		printk_ratelimited(KERN_WARNING
+				   "error: setting the clock failed (%d)\n",
+				   error);
 
         return 0;
 }

arch/powerpc/kernel/signal_32.c

@@ -25,6 +25,7 @@
 #include <linux/errno.h>
 #include <linux/elf.h>
 #include <linux/ptrace.h>
+#include <linux/ratelimit.h>
 #ifdef CONFIG_PPC64
 #include <linux/syscalls.h>
 #include <linux/compat.h>
@@ -892,11 +893,12 @@ badframe:
 	printk("badframe in handle_rt_signal, regs=%p frame=%p newsp=%lx\n",
 	       regs, frame, newsp);
 #endif
-	if (show_unhandled_signals && printk_ratelimit())
-		printk(KERN_INFO "%s[%d]: bad frame in handle_rt_signal32: "
-			"%p nip %08lx lr %08lx\n",
-			current->comm, current->pid,
-			addr, regs->nip, regs->link);
+	if (show_unhandled_signals)
+		printk_ratelimited(KERN_INFO
+				   "%s[%d]: bad frame in handle_rt_signal32: "
+				   "%p nip %08lx lr %08lx\n",
+				   current->comm, current->pid,
+				   addr, regs->nip, regs->link);
 
 	force_sigsegv(sig, current);
 	return 0;
@@ -1058,11 +1060,12 @@ long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
 	return 0;
 
  bad:
-	if (show_unhandled_signals && printk_ratelimit())
-		printk(KERN_INFO "%s[%d]: bad frame in sys_rt_sigreturn: "
-			"%p nip %08lx lr %08lx\n",
-			current->comm, current->pid,
-			rt_sf, regs->nip, regs->link);
+	if (show_unhandled_signals)
+		printk_ratelimited(KERN_INFO
+				   "%s[%d]: bad frame in sys_rt_sigreturn: "
+				   "%p nip %08lx lr %08lx\n",
+				   current->comm, current->pid,
+				   rt_sf, regs->nip, regs->link);
 
 	force_sig(SIGSEGV, current);
 	return 0;
@@ -1149,12 +1152,12 @@ int sys_debug_setcontext(struct ucontext __user *ctx,
 	 * We kill the task with a SIGSEGV in this situation.
 	 */
 	if (do_setcontext(ctx, regs, 1)) {
-		if (show_unhandled_signals && printk_ratelimit())
-			printk(KERN_INFO "%s[%d]: bad frame in "
-				"sys_debug_setcontext: %p nip %08lx "
-				"lr %08lx\n",
-				current->comm, current->pid,
-				ctx, regs->nip, regs->link);
+		if (show_unhandled_signals)
+			printk_ratelimited(KERN_INFO "%s[%d]: bad frame in "
+					   "sys_debug_setcontext: %p nip %08lx "
+					   "lr %08lx\n",
+					   current->comm, current->pid,
+					   ctx, regs->nip, regs->link);
 
 		force_sig(SIGSEGV, current);
 		goto out;
@@ -1236,11 +1239,12 @@ badframe:
 	printk("badframe in handle_signal, regs=%p frame=%p newsp=%lx\n",
 	       regs, frame, newsp);
 #endif
-	if (show_unhandled_signals && printk_ratelimit())
-		printk(KERN_INFO "%s[%d]: bad frame in handle_signal32: "
-			"%p nip %08lx lr %08lx\n",
-			current->comm, current->pid,
-			frame, regs->nip, regs->link);
+	if (show_unhandled_signals)
+		printk_ratelimited(KERN_INFO
+				   "%s[%d]: bad frame in handle_signal32: "
+				   "%p nip %08lx lr %08lx\n",
+				   current->comm, current->pid,
+				   frame, regs->nip, regs->link);
 
 	force_sigsegv(sig, current);
 	return 0;
@@ -1288,11 +1292,12 @@ long sys_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
 	return 0;
 
 badframe:
-	if (show_unhandled_signals && printk_ratelimit())
-		printk(KERN_INFO "%s[%d]: bad frame in sys_sigreturn: "
-			"%p nip %08lx lr %08lx\n",
-			current->comm, current->pid,
-			addr, regs->nip, regs->link);
+	if (show_unhandled_signals)
+		printk_ratelimited(KERN_INFO
+				   "%s[%d]: bad frame in sys_sigreturn: "
+				   "%p nip %08lx lr %08lx\n",
+				   current->comm, current->pid,
+				   addr, regs->nip, regs->link);
 
 	force_sig(SIGSEGV, current);
 	return 0;

arch/powerpc/kernel/signal_64.c

@@ -24,6 +24,7 @@
 #include <linux/elf.h>
 #include <linux/ptrace.h>
 #include <linux/module.h>
+#include <linux/ratelimit.h>
 
 #include <asm/sigcontext.h>
 #include <asm/ucontext.h>
@@ -380,10 +381,10 @@ badframe:
 	printk("badframe in sys_rt_sigreturn, regs=%p uc=%p &uc->uc_mcontext=%p\n",
 	       regs, uc, &uc->uc_mcontext);
 #endif
-	if (show_unhandled_signals && printk_ratelimit())
-		printk(regs->msr & MSR_64BIT ? fmt64 : fmt32,
-			current->comm, current->pid, "rt_sigreturn",
-			(long)uc, regs->nip, regs->link);
+	if (show_unhandled_signals)
+		printk_ratelimited(regs->msr & MSR_64BIT ? fmt64 : fmt32,
+				   current->comm, current->pid, "rt_sigreturn",
+				   (long)uc, regs->nip, regs->link);
 
 	force_sig(SIGSEGV, current);
 	return 0;
@@ -468,10 +469,10 @@ badframe:
 	printk("badframe in setup_rt_frame, regs=%p frame=%p newsp=%lx\n",
 	       regs, frame, newsp);
 #endif
-	if (show_unhandled_signals && printk_ratelimit())
-		printk(regs->msr & MSR_64BIT ? fmt64 : fmt32,
-			current->comm, current->pid, "setup_rt_frame",
-			(long)frame, regs->nip, regs->link);
+	if (show_unhandled_signals)
+		printk_ratelimited(regs->msr & MSR_64BIT ? fmt64 : fmt32,
+				   current->comm, current->pid, "setup_rt_frame",
+				   (long)frame, regs->nip, regs->link);
 
 	force_sigsegv(signr, current);
 	return 0;

arch/powerpc/kernel/traps.c

@@ -34,6 +34,7 @@
 #include <linux/bug.h>
 #include <linux/kdebug.h>
 #include <linux/debugfs.h>
+#include <linux/ratelimit.h>
 
 #include <asm/emulated_ops.h>
 #include <asm/pgtable.h>
@@ -197,12 +198,11 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
 		if (die("Exception in kernel mode", regs, signr))
 			return;
 	} else if (show_unhandled_signals &&
-		    unhandled_signal(current, signr) &&
-		    printk_ratelimit()) {
-			printk(regs->msr & MSR_64BIT ? fmt64 : fmt32,
-				current->comm, current->pid, signr,
-				addr, regs->nip, regs->link, code);
-		}
+		   unhandled_signal(current, signr)) {
+		printk_ratelimited(regs->msr & MSR_64BIT ? fmt64 : fmt32,
+				   current->comm, current->pid, signr,
+				   addr, regs->nip, regs->link, code);
+	}
 
 	memset(&info, 0, sizeof(info));
 	info.si_signo = signr;
@@ -425,7 +425,7 @@ int machine_check_e500mc(struct pt_regs *regs)
 	unsigned long reason = mcsr;
 	int recoverable = 1;
 
-	if (reason & MCSR_BUS_RBERR) {
+	if (reason & MCSR_LD) {
 		recoverable = fsl_rio_mcheck_exception(regs);
 		if (recoverable == 1)
 			goto silent_out;
@@ -1342,9 +1342,8 @@ void altivec_assist_exception(struct pt_regs *regs)
 	} else {
 		/* didn't recognize the instruction */
 		/* XXX quick hack for now: set the non-Java bit in the VSCR */
-		if (printk_ratelimit())
-			printk(KERN_ERR "Unrecognized altivec instruction "
-			       "in %s at %lx\n", current->comm, regs->nip);
+		printk_ratelimited(KERN_ERR "Unrecognized altivec instruction "
+				   "in %s at %lx\n", current->comm, regs->nip);
 		current->thread.vscr.u[3] |= 0x10000;
 	}
 }
@@ -1548,9 +1547,8 @@ u32 ppc_warn_emulated;
 
 void ppc_warn_emulated_print(const char *type)
 {
-	if (printk_ratelimit())
-		pr_warning("%s used emulated %s instruction\n", current->comm,
-			   type);
+	pr_warn_ratelimited("%s used emulated %s instruction\n", current->comm,
+			    type);
 }
 
 static int __init ppc_warn_emulated_init(void)

arch/powerpc/mm/fault.c

@@ -31,6 +31,7 @@
 #include <linux/kdebug.h>
 #include <linux/perf_event.h>
 #include <linux/magic.h>
+#include <linux/ratelimit.h>
 
 #include <asm/firmware.h>
 #include <asm/page.h>
@@ -346,11 +347,10 @@ bad_area_nosemaphore:
 		return 0;
 	}
 
-	if (is_exec && (error_code & DSISR_PROTFAULT)
-	    && printk_ratelimit())
-		printk(KERN_CRIT "kernel tried to execute NX-protected"
-		       " page (%lx) - exploit attempt? (uid: %d)\n",
-		       address, current_uid());
+	if (is_exec && (error_code & DSISR_PROTFAULT))
+		printk_ratelimited(KERN_CRIT "kernel tried to execute NX-protected"
+				   " page (%lx) - exploit attempt? (uid: %d)\n",
+				   address, current_uid());
 
 	return SIGSEGV;
 

arch/powerpc/sysdev/fsl_rio.c

@@ -283,23 +283,24 @@ static void __iomem *rio_regs_win;
 #ifdef CONFIG_E500
 int fsl_rio_mcheck_exception(struct pt_regs *regs)
 {
-	const struct exception_table_entry *entry = NULL;
-	unsigned long reason = mfspr(SPRN_MCSR);
-
-	if (reason & MCSR_BUS_RBERR) {
-		reason = in_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR));
-		if (reason & (RIO_LTLEDCSR_IER | RIO_LTLEDCSR_PRT)) {
-			/* Check if we are prepared to handle this fault */
-			entry = search_exception_tables(regs->nip);
-			if (entry) {
-				pr_debug("RIO: %s - MC Exception handled\n",
-					 __func__);
-				out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR),
-					 0);
-				regs->msr |= MSR_RI;
-				regs->nip = entry->fixup;
-				return 1;
-			}
+	const struct exception_table_entry *entry;
+	unsigned long reason;
+
+	if (!rio_regs_win)
+		return 0;
+
+	reason = in_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR));
+	if (reason & (RIO_LTLEDCSR_IER | RIO_LTLEDCSR_PRT)) {
+		/* Check if we are prepared to handle this fault */
+		entry = search_exception_tables(regs->nip);
+		if (entry) {
+			pr_debug("RIO: %s - MC Exception handled\n",
+				 __func__);
+			out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR),
+				 0);
+			regs->msr |= MSR_RI;
+			regs->nip = entry->fixup;
+			return 1;
 		}
 	}
 

arch/powerpc/sysdev/mpic.c

@@ -29,6 +29,7 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/syscore_ops.h>
+#include <linux/ratelimit.h>
 
 #include <asm/ptrace.h>
 #include <asm/signal.h>
@@ -1648,9 +1649,8 @@ static unsigned int _mpic_get_one_irq(struct mpic *mpic, int reg)
 		return NO_IRQ;
 	}
 	if (unlikely(mpic->protected && test_bit(src, mpic->protected))) {
-		if (printk_ratelimit())
-			printk(KERN_WARNING "%s: Got protected source %d !\n",
-			       mpic->name, (int)src);
+		printk_ratelimited(KERN_WARNING "%s: Got protected source %d !\n",
+				   mpic->name, (int)src);
 		mpic_eoi(mpic);
 		return NO_IRQ;
 	}
@@ -1688,9 +1688,8 @@ unsigned int mpic_get_coreint_irq(void)
 		return NO_IRQ;
 	}
 	if (unlikely(mpic->protected && test_bit(src, mpic->protected))) {
-		if (printk_ratelimit())
-			printk(KERN_WARNING "%s: Got protected source %d !\n",
-			       mpic->name, (int)src);
+		printk_ratelimited(KERN_WARNING "%s: Got protected source %d !\n",
+				   mpic->name, (int)src);
 		return NO_IRQ;
 	}
 

arch/sh/Kconfig

@@ -348,6 +348,7 @@ config CPU_SUBTYPE_SH7720
 	select SYS_SUPPORTS_CMT
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select USB_ARCH_HAS_OHCI
+	select USB_OHCI_SH if USB_OHCI_HCD
 	help
 	  Select SH7720 if you have a SH3-DSP SH7720 CPU.
 
@@ -357,6 +358,7 @@ config CPU_SUBTYPE_SH7721
 	select CPU_HAS_DSP
 	select SYS_SUPPORTS_CMT
 	select USB_ARCH_HAS_OHCI
+	select USB_OHCI_SH if USB_OHCI_HCD
 	help
 	  Select SH7721 if you have a SH3-DSP SH7721 CPU.
 
@@ -440,6 +442,7 @@ config CPU_SUBTYPE_SH7763
 	bool "Support SH7763 processor"
 	select CPU_SH4A
 	select USB_ARCH_HAS_OHCI
+	select USB_OHCI_SH if USB_OHCI_HCD
 	help
 	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
 
@@ -467,7 +470,9 @@ config CPU_SUBTYPE_SH7786
 	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select USB_ARCH_HAS_OHCI
+	select USB_OHCI_SH if USB_OHCI_HCD
 	select USB_ARCH_HAS_EHCI
+	select USB_EHCI_SH if USB_EHCI_HCD
 
 config CPU_SUBTYPE_SHX3
 	bool "Support SH-X3 processor"

arch/sh/configs/sh7757lcr_defconfig

@@ -9,7 +9,6 @@ CONFIG_TASK_XACCT=y
 CONFIG_TASK_IO_ACCOUNTING=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_BLK_DEV_INITRD=y
-# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
 # CONFIG_SYSCTL_SYSCALL is not set
 CONFIG_KALLSYMS_ALL=y
 CONFIG_SLAB=y
@@ -39,8 +38,6 @@ CONFIG_IPV6=y
 CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
 # CONFIG_FW_LOADER is not set
 CONFIG_MTD=y
-CONFIG_MTD_CONCAT=y
-CONFIG_MTD_PARTITIONS=y
 CONFIG_MTD_CHAR=y
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_M25P80=y
@@ -56,18 +53,19 @@ CONFIG_SH_ETH=y
 # CONFIG_KEYBOARD_ATKBD is not set
 # CONFIG_MOUSE_PS2 is not set
 # CONFIG_SERIO is not set
+# CONFIG_LEGACY_PTYS is not set
 CONFIG_SERIAL_SH_SCI=y
 CONFIG_SERIAL_SH_SCI_NR_UARTS=3
 CONFIG_SERIAL_SH_SCI_CONSOLE=y
-# CONFIG_LEGACY_PTYS is not set
 # CONFIG_HW_RANDOM is not set
 CONFIG_SPI=y
 CONFIG_SPI_SH=y
 # CONFIG_HWMON is not set
-CONFIG_MFD_SH_MOBILE_SDHI=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_SH=y
 CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_SH=y
 CONFIG_USB_STORAGE=y
 CONFIG_MMC=y
 CONFIG_MMC_SDHI=y

arch/sh/kernel/cpu/sh4a/setup-sh7757.c

@@ -183,7 +183,7 @@ static const struct sh_dmae_slave_config sh7757_dmae1_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_SCIF2_RX,
 		.addr		= 0x1f4b0014,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x22,
 	},
@@ -197,7 +197,7 @@ static const struct sh_dmae_slave_config sh7757_dmae1_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_SCIF3_RX,
 		.addr		= 0x1f4c0014,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x2a,
 	},
@@ -211,7 +211,7 @@ static const struct sh_dmae_slave_config sh7757_dmae1_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_SCIF4_RX,
 		.addr		= 0x1f4d0014,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x42,
 	},
@@ -228,7 +228,7 @@ static const struct sh_dmae_slave_config sh7757_dmae2_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC0_RX,
 		.addr		= 0x1e500013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x22,
 	},
@@ -242,7 +242,7 @@ static const struct sh_dmae_slave_config sh7757_dmae2_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC1_RX,
 		.addr		= 0x1e510013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x2a,
 	},
@@ -256,7 +256,7 @@ static const struct sh_dmae_slave_config sh7757_dmae2_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC2_RX,
 		.addr		= 0x1e520013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0xa2,
 	},
@@ -265,12 +265,12 @@ static const struct sh_dmae_slave_config sh7757_dmae2_slaves[] = {
 		.addr		= 0x1e530012,
 		.chcr		= SM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
-		.mid_rid	= 0xab,
+		.mid_rid	= 0xa9,
 	},
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC3_RX,
 		.addr		= 0x1e530013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0xaf,
 	},
@@ -279,14 +279,14 @@ static const struct sh_dmae_slave_config sh7757_dmae2_slaves[] = {
 		.addr		= 0x1e540012,
 		.chcr		= SM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
-		.mid_rid	= 0xc1,
+		.mid_rid	= 0xc5,
 	},
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC4_RX,
 		.addr		= 0x1e540013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
-		.mid_rid	= 0xc2,
+		.mid_rid	= 0xc6,
 	},
 };
 
@@ -301,7 +301,7 @@ static const struct sh_dmae_slave_config sh7757_dmae3_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC5_RX,
 		.addr		= 0x1e550013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x22,
 	},
@@ -315,7 +315,7 @@ static const struct sh_dmae_slave_config sh7757_dmae3_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC6_RX,
 		.addr		= 0x1e560013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x2a,
 	},
@@ -329,7 +329,7 @@ static const struct sh_dmae_slave_config sh7757_dmae3_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC7_RX,
 		.addr		= 0x1e570013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x42,
 	},
@@ -343,7 +343,7 @@ static const struct sh_dmae_slave_config sh7757_dmae3_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC8_RX,
 		.addr		= 0x1e580013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x46,
 	},
@@ -357,7 +357,7 @@ static const struct sh_dmae_slave_config sh7757_dmae3_slaves[] = {
 	{
 		.slave_id	= SHDMA_SLAVE_RIIC9_RX,
 		.addr		= 0x1e590013,
-		.chcr		= SM_INC | 0x800 | 0x40000000 |
+		.chcr		= DM_INC | 0x800 | 0x40000000 |
 				  TS_INDEX2VAL(XMIT_SZ_8BIT),
 		.mid_rid	= 0x52,
 	},
@@ -659,6 +659,54 @@ static struct platform_device spi0_device = {
 	.resource	= spi0_resources,
 };
 
+static struct resource usb_ehci_resources[] = {
+	[0] = {
+		.start	= 0xfe4f1000,
+		.end	= 0xfe4f10ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= 57,
+		.end	= 57,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device usb_ehci_device = {
+	.name		= "sh_ehci",
+	.id		= -1,
+	.dev = {
+		.dma_mask = &usb_ehci_device.dev.coherent_dma_mask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+	.num_resources	= ARRAY_SIZE(usb_ehci_resources),
+	.resource	= usb_ehci_resources,
+};
+
+static struct resource usb_ohci_resources[] = {
+	[0] = {
+		.start	= 0xfe4f1800,
+		.end	= 0xfe4f18ff,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= 57,
+		.end	= 57,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device usb_ohci_device = {
+	.name		= "sh_ohci",
+	.id		= -1,
+	.dev = {
+		.dma_mask = &usb_ohci_device.dev.coherent_dma_mask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+	.num_resources	= ARRAY_SIZE(usb_ohci_resources),
+	.resource	= usb_ohci_resources,
+};
+
 static struct platform_device *sh7757_devices[] __initdata = {
 	&scif2_device,
 	&scif3_device,
@@ -670,6 +718,8 @@ static struct platform_device *sh7757_devices[] __initdata = {
 	&dma2_device,
 	&dma3_device,
 	&spi0_device,
+	&usb_ehci_device,
+	&usb_ohci_device,
 };
 
 static int __init sh7757_devices_setup(void)
@@ -1039,13 +1089,13 @@ static DECLARE_INTC_DESC(intc_desc, "sh7757", vectors, groups,
 
 /* Support for external interrupt pins in IRQ mode */
 static struct intc_vect vectors_irq0123[] __initdata = {
-	INTC_VECT(IRQ0, 0x240), INTC_VECT(IRQ1, 0x280),
-	INTC_VECT(IRQ2, 0x2c0), INTC_VECT(IRQ3, 0x300),
+	INTC_VECT(IRQ0, 0x200), INTC_VECT(IRQ1, 0x240),
+	INTC_VECT(IRQ2, 0x280), INTC_VECT(IRQ3, 0x2c0),
 };
 
 static struct intc_vect vectors_irq4567[] __initdata = {
-	INTC_VECT(IRQ4, 0x340), INTC_VECT(IRQ5, 0x380),
-	INTC_VECT(IRQ6, 0x3c0), INTC_VECT(IRQ7, 0x200),
+	INTC_VECT(IRQ4, 0x300), INTC_VECT(IRQ5, 0x340),
+	INTC_VECT(IRQ6, 0x380), INTC_VECT(IRQ7, 0x3c0),
 };
 
 static struct intc_sense_reg sense_registers[] __initdata = {
@@ -1079,14 +1129,14 @@ static struct intc_vect vectors_irl0123[] __initdata = {
 };
 
 static struct intc_vect vectors_irl4567[] __initdata = {
-	INTC_VECT(IRL4_LLLL, 0xb00), INTC_VECT(IRL4_LLLH, 0xb20),
-	INTC_VECT(IRL4_LLHL, 0xb40), INTC_VECT(IRL4_LLHH, 0xb60),
-	INTC_VECT(IRL4_LHLL, 0xb80), INTC_VECT(IRL4_LHLH, 0xba0),
-	INTC_VECT(IRL4_LHHL, 0xbc0), INTC_VECT(IRL4_LHHH, 0xbe0),
-	INTC_VECT(IRL4_HLLL, 0xc00), INTC_VECT(IRL4_HLLH, 0xc20),
-	INTC_VECT(IRL4_HLHL, 0xc40), INTC_VECT(IRL4_HLHH, 0xc60),
-	INTC_VECT(IRL4_HHLL, 0xc80), INTC_VECT(IRL4_HHLH, 0xca0),
-	INTC_VECT(IRL4_HHHL, 0xcc0),
+	INTC_VECT(IRL4_LLLL, 0x200), INTC_VECT(IRL4_LLLH, 0x220),
+	INTC_VECT(IRL4_LLHL, 0x240), INTC_VECT(IRL4_LLHH, 0x260),
+	INTC_VECT(IRL4_LHLL, 0x280), INTC_VECT(IRL4_LHLH, 0x2a0),
+	INTC_VECT(IRL4_LHHL, 0x2c0), INTC_VECT(IRL4_LHHH, 0x2e0),
+	INTC_VECT(IRL4_HLLL, 0x300), INTC_VECT(IRL4_HLLH, 0x320),
+	INTC_VECT(IRL4_HLHL, 0x340), INTC_VECT(IRL4_HLHH, 0x360),
+	INTC_VECT(IRL4_HHLL, 0x380), INTC_VECT(IRL4_HHLH, 0x3a0),
+	INTC_VECT(IRL4_HHHL, 0x3c0),
 };
 
 static DECLARE_INTC_DESC(intc_desc_irl0123, "sh7757-irl0123", vectors_irl0123,

arch/sh/kernel/irq.c

@@ -13,6 +13,7 @@
 #include <linux/seq_file.h>
 #include <linux/ftrace.h>
 #include <linux/delay.h>
+#include <linux/ratelimit.h>
 #include <asm/processor.h>
 #include <asm/machvec.h>
 #include <asm/uaccess.h>
@@ -268,9 +269,8 @@ void migrate_irqs(void)
 			unsigned int newcpu = cpumask_any_and(data->affinity,
 							      cpu_online_mask);
 			if (newcpu >= nr_cpu_ids) {
-				if (printk_ratelimit())
-					printk(KERN_INFO "IRQ%u no longer affine to CPU%u\n",
-					       irq, cpu);
+				pr_info_ratelimited("IRQ%u no longer affine to CPU%u\n",
+						    irq, cpu);
 
 				cpumask_setall(data->affinity);
 				newcpu = cpumask_any_and(data->affinity,

arch/sh/mm/alignment.c

@@ -13,6 +13,7 @@
 #include <linux/seq_file.h>
 #include <linux/proc_fs.h>
 #include <linux/uaccess.h>
+#include <linux/ratelimit.h>
 #include <asm/alignment.h>
 #include <asm/processor.h>
 
@@ -95,13 +96,13 @@ int set_unalign_ctl(struct task_struct *tsk, unsigned int val)
 void unaligned_fixups_notify(struct task_struct *tsk, insn_size_t insn,
 			     struct pt_regs *regs)
 {
-	if (user_mode(regs) && (se_usermode & UM_WARN) && printk_ratelimit())
-		pr_notice("Fixing up unaligned userspace access "
+	if (user_mode(regs) && (se_usermode & UM_WARN))
+		pr_notice_ratelimited("Fixing up unaligned userspace access "
 			  "in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n",
 			  tsk->comm, task_pid_nr(tsk),
 			  (void *)instruction_pointer(regs), insn);
-	else if (se_kernmode_warn && printk_ratelimit())
-		pr_notice("Fixing up unaligned kernel access "
+	else if (se_kernmode_warn)
+		pr_notice_ratelimited("Fixing up unaligned kernel access "
 			  "in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n",
 			  tsk->comm, task_pid_nr(tsk),
 			  (void *)instruction_pointer(regs), insn);

arch/x86/include/asm/apb_timer.h

@@ -62,7 +62,7 @@ extern int sfi_mtimer_num;
 #else /* CONFIG_APB_TIMER */
 
 static inline unsigned long apbt_quick_calibrate(void) {return 0; }
-static inline void apbt_time_init(void) {return 0; }
+static inline void apbt_time_init(void) { }
 
 #endif
 #endif /* ASM_X86_APBT_H */

arch/x86/kvm/emulate.c

@@ -3372,7 +3372,7 @@ x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
 	int def_op_bytes, def_ad_bytes, goffset, simd_prefix;
 	bool op_prefix = false;
 	struct opcode opcode;
-	struct operand memop = { .type = OP_NONE };
+	struct operand memop = { .type = OP_NONE }, *memopp = NULL;
 
 	c->eip = ctxt->eip;
 	c->fetch.start = c->eip;
@@ -3547,9 +3547,6 @@ done_prefixes:
 	if (memop.type == OP_MEM && c->ad_bytes != 8)
 		memop.addr.mem.ea = (u32)memop.addr.mem.ea;
 
-	if (memop.type == OP_MEM && c->rip_relative)
-		memop.addr.mem.ea += c->eip;
-
 	/*
 	 * Decode and fetch the source operand: register, memory
 	 * or immediate.
@@ -3571,6 +3568,7 @@ done_prefixes:
 							   c->op_bytes;
 	srcmem_common:
 		c->src = memop;
+		memopp = &c->src;
 		break;
 	case SrcImmU16:
 		rc = decode_imm(ctxt, &c->src, 2, false);
@@ -3667,6 +3665,7 @@ done_prefixes:
 	case DstMem:
 	case DstMem64:
 		c->dst = memop;
+		memopp = &c->dst;
 		if ((c->d & DstMask) == DstMem64)
 			c->dst.bytes = 8;
 		else
@@ -3700,10 +3699,13 @@ done_prefixes:
 		/* Special instructions do their own operand decoding. */
 	default:
 		c->dst.type = OP_NONE; /* Disable writeback. */
-		return 0;
+		break;
 	}
 
 done:
+	if (memopp && memopp->type == OP_MEM && c->rip_relative)
+		memopp->addr.mem.ea += c->eip;
+
 	return (rc == X86EMUL_UNHANDLEABLE) ? EMULATION_FAILED : EMULATION_OK;
 }
 

arch/x86/pci/xen.c

@@ -333,6 +333,7 @@ static int xen_register_pirq(u32 gsi, int triggering)
 	struct physdev_map_pirq map_irq;
 	int shareable = 0;
 	char *name;
+	bool gsi_override = false;
 
 	if (!xen_pv_domain())
 		return -1;
@@ -349,11 +350,32 @@ static int xen_register_pirq(u32 gsi, int triggering)
 	if (pirq < 0)
 		goto out;
 
-	irq = xen_bind_pirq_gsi_to_irq(gsi, pirq, shareable, name);
+	/* Before we bind the GSI to a Linux IRQ, check whether
+	 * we need to override it with bus_irq (IRQ) value. Usually for
+	 * IRQs below IRQ_LEGACY_IRQ this holds IRQ == GSI, as so:
+	 *  ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
+	 * but there are oddballs where the IRQ != GSI:
+	 *  ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level)
+	 * which ends up being: gsi_to_irq[9] == 20
+	 * (which is what acpi_gsi_to_irq ends up calling when starting the
+	 * the ACPI interpreter and keels over since IRQ 9 has not been
+	 * setup as we had setup IRQ 20 for it).
+	 */
+	if (gsi == acpi_sci_override_gsi) {
+		/* Check whether the GSI != IRQ */
+		acpi_gsi_to_irq(gsi, &irq);
+		if (irq != gsi)
+			/* Bugger, we MUST have that IRQ. */
+			gsi_override = true;
+	}
+	if (gsi_override)
+		irq = xen_bind_pirq_gsi_to_irq(irq, pirq, shareable, name);
+	else
+		irq = xen_bind_pirq_gsi_to_irq(gsi, pirq, shareable, name);
 	if (irq < 0)
 		goto out;
 
-	printk(KERN_DEBUG "xen: --> pirq=%d -> irq=%d\n", pirq, irq);
+	printk(KERN_DEBUG "xen: --> pirq=%d -> irq=%d (gsi=%d)\n", pirq, irq, gsi);
 
 	map_irq.domid = DOMID_SELF;
 	map_irq.type = MAP_PIRQ_TYPE_GSI;

arch/x86/xen/mmu.c

@@ -1232,7 +1232,11 @@ static void xen_flush_tlb_others(const struct cpumask *cpus,
 {
 	struct {
 		struct mmuext_op op;
+#ifdef CONFIG_SMP
 		DECLARE_BITMAP(mask, num_processors);
+#else
+		DECLARE_BITMAP(mask, NR_CPUS);
+#endif
 	} *args;
 	struct multicall_space mcs;
 

crypto/deflate.c

@@ -32,7 +32,6 @@
 #include <linux/interrupt.h>
 #include <linux/mm.h>
 #include <linux/net.h>
-#include <linux/slab.h>
 
 #define DEFLATE_DEF_LEVEL		Z_DEFAULT_COMPRESSION
 #define DEFLATE_DEF_WINBITS		11
@@ -73,7 +72,7 @@ static int deflate_decomp_init(struct deflate_ctx *ctx)
 	int ret = 0;
 	struct z_stream_s *stream = &ctx->decomp_stream;
 
-	stream->workspace = kzalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
+	stream->workspace = vzalloc(zlib_inflate_workspacesize());
 	if (!stream->workspace) {
 		ret = -ENOMEM;
 		goto out;
@@ -86,7 +85,7 @@ static int deflate_decomp_init(struct deflate_ctx *ctx)
 out:
 	return ret;
 out_free:
-	kfree(stream->workspace);
+	vfree(stream->workspace);
 	goto out;
 }
 
@@ -99,7 +98,7 @@ static void deflate_comp_exit(struct deflate_ctx *ctx)
 static void deflate_decomp_exit(struct deflate_ctx *ctx)
 {
 	zlib_inflateEnd(&ctx->decomp_stream);
-	kfree(ctx->decomp_stream.workspace);
+	vfree(ctx->decomp_stream.workspace);
 }
 
 static int deflate_init(struct crypto_tfm *tfm)

crypto/zlib.c

@@ -29,7 +29,6 @@
 #include <linux/interrupt.h>
 #include <linux/mm.h>
 #include <linux/net.h>
-#include <linux/slab.h>
 
 #include <crypto/internal/compress.h>
 
@@ -60,7 +59,7 @@ static void zlib_decomp_exit(struct zlib_ctx *ctx)
 
 	if (stream->workspace) {
 		zlib_inflateEnd(stream);
-		kfree(stream->workspace);
+		vfree(stream->workspace);
 		stream->workspace = NULL;
 	}
 }
@@ -228,13 +227,13 @@ static int zlib_decompress_setup(struct crypto_pcomp *tfm, void *params,
 				 ? nla_get_u32(tb[ZLIB_DECOMP_WINDOWBITS])
 				 : DEF_WBITS;
 
-	stream->workspace = kzalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
+	stream->workspace = vzalloc(zlib_inflate_workspacesize());
 	if (!stream->workspace)
 		return -ENOMEM;
 
 	ret = zlib_inflateInit2(stream, ctx->decomp_windowBits);
 	if (ret != Z_OK) {
-		kfree(stream->workspace);
+		vfree(stream->workspace);
 		stream->workspace = NULL;
 		return -EINVAL;
 	}

drivers/ata/libahci.c

@@ -452,7 +452,7 @@ void ahci_save_initial_config(struct device *dev,
 	}
 
 	if (mask_port_map) {
-		dev_printk(KERN_ERR, dev, "masking port_map 0x%x -> 0x%x\n",
+		dev_printk(KERN_WARNING, dev, "masking port_map 0x%x -> 0x%x\n",
 			   port_map,
 			   port_map & mask_port_map);
 		port_map &= mask_port_map;

drivers/crypto/caam/caamalg.c

@@ -238,9 +238,9 @@ static int build_sh_desc_ipsec(struct caam_ctx *ctx)
 
 	/* build shared descriptor for this session */
 	sh_desc = kmalloc(CAAM_CMD_SZ * DESC_AEAD_SHARED_TEXT_LEN +
-			  keys_fit_inline ?
-			  ctx->split_key_pad_len + ctx->enckeylen :
-			  CAAM_PTR_SZ * 2, GFP_DMA | GFP_KERNEL);
+			  (keys_fit_inline ?
+			   ctx->split_key_pad_len + ctx->enckeylen :
+			   CAAM_PTR_SZ * 2), GFP_DMA | GFP_KERNEL);
 	if (!sh_desc) {
 		dev_err(jrdev, "could not allocate shared descriptor\n");
 		return -ENOMEM;

drivers/gpu/drm/i915/intel_dp.c

@@ -50,7 +50,6 @@ struct intel_dp {
 	bool has_audio;
 	int force_audio;
 	uint32_t color_range;
-	int dpms_mode;
 	uint8_t link_bw;
 	uint8_t lane_count;
 	uint8_t dpcd[4];
@@ -138,8 +137,8 @@ intel_dp_max_lane_count(struct intel_dp *intel_dp)
 {
 	int max_lane_count = 4;
 
-	if (intel_dp->dpcd[0] >= 0x11) {
-		max_lane_count = intel_dp->dpcd[2] & 0x1f;
+	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) {
+		max_lane_count = intel_dp->dpcd[DP_MAX_LANE_COUNT] & 0x1f;
 		switch (max_lane_count) {
 		case 1: case 2: case 4:
 			break;
@@ -153,7 +152,7 @@ intel_dp_max_lane_count(struct intel_dp *intel_dp)
 static int
 intel_dp_max_link_bw(struct intel_dp *intel_dp)
 {
-	int max_link_bw = intel_dp->dpcd[1];
+	int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE];
 
 	switch (max_link_bw) {
 	case DP_LINK_BW_1_62:
@@ -775,7 +774,8 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
 	/*
 	 * Check for DPCD version > 1.1 and enhanced framing support
 	 */
-	if (intel_dp->dpcd[0] >= 0x11 && (intel_dp->dpcd[2] & DP_ENHANCED_FRAME_CAP)) {
+	if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 &&
+	    (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) {
 		intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
 		intel_dp->DP |= DP_ENHANCED_FRAMING;
 	}
@@ -943,11 +943,44 @@ static void ironlake_edp_pll_off(struct drm_encoder *encoder)
 	udelay(200);
 }
 
+/* If the sink supports it, try to set the power state appropriately */
+static void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode)
+{
+	int ret, i;
+
+	/* Should have a valid DPCD by this point */
+	if (intel_dp->dpcd[DP_DPCD_REV] < 0x11)
+		return;
+
+	if (mode != DRM_MODE_DPMS_ON) {
+		ret = intel_dp_aux_native_write_1(intel_dp, DP_SET_POWER,
+						  DP_SET_POWER_D3);
+		if (ret != 1)
+			DRM_DEBUG_DRIVER("failed to write sink power state\n");
+	} else {
+		/*
+		 * When turning on, we need to retry for 1ms to give the sink
+		 * time to wake up.
+		 */
+		for (i = 0; i < 3; i++) {
+			ret = intel_dp_aux_native_write_1(intel_dp,
+							  DP_SET_POWER,
+							  DP_SET_POWER_D0);
+			if (ret == 1)
+				break;
+			msleep(1);
+		}
+	}
+}
+
 static void intel_dp_prepare(struct drm_encoder *encoder)
 {
 	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 	struct drm_device *dev = encoder->dev;
 
+	/* Wake up the sink first */
+	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
+
 	if (is_edp(intel_dp)) {
 		ironlake_edp_backlight_off(dev);
 		ironlake_edp_panel_off(dev);
@@ -991,6 +1024,7 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode)
 	if (mode != DRM_MODE_DPMS_ON) {
 		if (is_edp(intel_dp))
 			ironlake_edp_backlight_off(dev);
+		intel_dp_sink_dpms(intel_dp, mode);
 		intel_dp_link_down(intel_dp);
 		if (is_edp(intel_dp))
 			ironlake_edp_panel_off(dev);
@@ -999,6 +1033,7 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode)
 	} else {
 		if (is_edp(intel_dp))
 			ironlake_edp_panel_vdd_on(intel_dp);
+		intel_dp_sink_dpms(intel_dp, mode);
 		if (!(dp_reg & DP_PORT_EN)) {
 			intel_dp_start_link_train(intel_dp);
 			if (is_edp(intel_dp)) {
@@ -1010,7 +1045,31 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode)
 		if (is_edp(intel_dp))
 			ironlake_edp_backlight_on(dev);
 	}
-	intel_dp->dpms_mode = mode;
+}
+
+/*
+ * Native read with retry for link status and receiver capability reads for
+ * cases where the sink may still be asleep.
+ */
+static bool
+intel_dp_aux_native_read_retry(struct intel_dp *intel_dp, uint16_t address,
+			       uint8_t *recv, int recv_bytes)
+{
+	int ret, i;
+
+	/*
+	 * Sinks are *supposed* to come up within 1ms from an off state,
+	 * but we're also supposed to retry 3 times per the spec.
+	 */
+	for (i = 0; i < 3; i++) {
+		ret = intel_dp_aux_native_read(intel_dp, address, recv,
+					       recv_bytes);
+		if (ret == recv_bytes)
+			return true;
+		msleep(1);
+	}
+
+	return false;
 }
 
 /*
@@ -1020,14 +1079,10 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode)
 static bool
 intel_dp_get_link_status(struct intel_dp *intel_dp)
 {
-	int ret;
-
-	ret = intel_dp_aux_native_read(intel_dp,
-				       DP_LANE0_1_STATUS,
-				       intel_dp->link_status, DP_LINK_STATUS_SIZE);
-	if (ret != DP_LINK_STATUS_SIZE)
-		return false;
-	return true;
+	return intel_dp_aux_native_read_retry(intel_dp,
+					      DP_LANE0_1_STATUS,
+					      intel_dp->link_status,
+					      DP_LINK_STATUS_SIZE);
 }
 
 static uint8_t
@@ -1516,6 +1571,8 @@ intel_dp_link_down(struct intel_dp *intel_dp)
 static void
 intel_dp_check_link_status(struct intel_dp *intel_dp)
 {
+	int ret;
+
 	if (!intel_dp->base.base.crtc)
 		return;
 
@@ -1524,6 +1581,15 @@ intel_dp_check_link_status(struct intel_dp *intel_dp)
 		return;
 	}
 
+	/* Try to read receiver status if the link appears to be up */
+	ret = intel_dp_aux_native_read(intel_dp,
+				       0x000, intel_dp->dpcd,
+				       sizeof (intel_dp->dpcd));
+	if (ret != sizeof(intel_dp->dpcd)) {
+		intel_dp_link_down(intel_dp);
+		return;
+	}
+
 	if (!intel_channel_eq_ok(intel_dp)) {
 		intel_dp_start_link_train(intel_dp);
 		intel_dp_complete_link_train(intel_dp);
@@ -1534,6 +1600,7 @@ static enum drm_connector_status
 ironlake_dp_detect(struct intel_dp *intel_dp)
 {
 	enum drm_connector_status status;
+	bool ret;
 
 	/* Can't disconnect eDP, but you can close the lid... */
 	if (is_edp(intel_dp)) {
@@ -1544,13 +1611,11 @@ ironlake_dp_detect(struct intel_dp *intel_dp)
 	}
 
 	status = connector_status_disconnected;
-	if (intel_dp_aux_native_read(intel_dp,
-				     0x000, intel_dp->dpcd,
-				     sizeof (intel_dp->dpcd))
-	    == sizeof(intel_dp->dpcd)) {
-		if (intel_dp->dpcd[0] != 0)
-			status = connector_status_connected;
-	}
+	ret = intel_dp_aux_native_read_retry(intel_dp,
+					     0x000, intel_dp->dpcd,
+					     sizeof (intel_dp->dpcd));
+	if (ret && intel_dp->dpcd[DP_DPCD_REV] != 0)
+		status = connector_status_connected;
 	DRM_DEBUG_KMS("DPCD: %hx%hx%hx%hx\n", intel_dp->dpcd[0],
 		      intel_dp->dpcd[1], intel_dp->dpcd[2], intel_dp->dpcd[3]);
 	return status;
@@ -1587,7 +1652,7 @@ g4x_dp_detect(struct intel_dp *intel_dp)
 	if (intel_dp_aux_native_read(intel_dp, 0x000, intel_dp->dpcd,
 				     sizeof (intel_dp->dpcd)) == sizeof (intel_dp->dpcd))
 	{
-		if (intel_dp->dpcd[0] != 0)
+		if (intel_dp->dpcd[DP_DPCD_REV] != 0)
 			status = connector_status_connected;
 	}
 
@@ -1791,8 +1856,7 @@ intel_dp_hot_plug(struct intel_encoder *intel_encoder)
 {
 	struct intel_dp *intel_dp = container_of(intel_encoder, struct intel_dp, base);
 
-	if (intel_dp->dpms_mode == DRM_MODE_DPMS_ON)
-		intel_dp_check_link_status(intel_dp);
+	intel_dp_check_link_status(intel_dp);
 }
 
 /* Return which DP Port should be selected for Transcoder DP control */
@@ -1860,7 +1924,6 @@ intel_dp_init(struct drm_device *dev, int output_reg)
 		return;
 
 	intel_dp->output_reg = output_reg;
-	intel_dp->dpms_mode = -1;
 
 	intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
 	if (!intel_connector) {
@@ -1955,8 +2018,9 @@ intel_dp_init(struct drm_device *dev, int output_reg)
 					       sizeof(intel_dp->dpcd));
 		ironlake_edp_panel_vdd_off(intel_dp);
 		if (ret == sizeof(intel_dp->dpcd)) {
-			if (intel_dp->dpcd[0] >= 0x11)
-				dev_priv->no_aux_handshake = intel_dp->dpcd[3] &
+			if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11)
+				dev_priv->no_aux_handshake =
+					intel_dp->dpcd[DP_MAX_DOWNSPREAD] &
 					DP_NO_AUX_HANDSHAKE_LINK_TRAINING;
 		} else {
 			/* if this fails, presume the device is a ghost */

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -371,7 +371,6 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->vram.flags_valid	= nv50_vram_flags_valid;
 		break;
 	case 0xC0:
-	case 0xD0:
 		engine->instmem.init		= nvc0_instmem_init;
 		engine->instmem.takedown	= nvc0_instmem_takedown;
 		engine->instmem.suspend		= nvc0_instmem_suspend;
@@ -923,7 +922,6 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 		dev_priv->card_type = NV_50;
 		break;
 	case 0xc0:
-	case 0xd0:
 		dev_priv->card_type = NV_C0;
 		break;
 	default:

drivers/gpu/drm/radeon/evergreen.c

@@ -2248,7 +2248,10 @@ int evergreen_mc_init(struct radeon_device *rdev)
 
 	/* Get VRAM informations */
 	rdev->mc.vram_is_ddr = true;
-	tmp = RREG32(MC_ARB_RAMCFG);
+	if (rdev->flags & RADEON_IS_IGP)
+		tmp = RREG32(FUS_MC_ARB_RAMCFG);
+	else
+		tmp = RREG32(MC_ARB_RAMCFG);
 	if (tmp & CHANSIZE_OVERRIDE) {
 		chansize = 16;
 	} else if (tmp & CHANSIZE_MASK) {

drivers/gpu/drm/radeon/nid.h

@@ -320,7 +320,7 @@
 #define	CGTS_USER_TCC_DISABLE				0x914C
 #define		TCC_DISABLE_MASK				0xFFFF0000
 #define		TCC_DISABLE_SHIFT				16
-#define	CGTS_SM_CTRL_REG				0x915C
+#define	CGTS_SM_CTRL_REG				0x9150
 #define		OVERRIDE				(1 << 21)
 
 #define	TA_CNTL_AUX					0x9508

drivers/gpu/drm/radeon/radeon_bios.c

@@ -104,7 +104,7 @@ static bool radeon_read_bios(struct radeon_device *rdev)
 static bool radeon_atrm_get_bios(struct radeon_device *rdev)
 {
 	int ret;
-	int size = 64 * 1024;
+	int size = 256 * 1024;
 	int i;
 
 	if (!radeon_atrm_supported(rdev->pdev))

drivers/gpu/drm/radeon/rv770.c

@@ -575,6 +575,12 @@ static void rv770_program_channel_remap(struct radeon_device *rdev)
 	else
 		tcp_chan_steer = 0x00fac688;
 
+	/* RV770 CE has special chremap setup */
+	if (rdev->pdev->device == 0x944e) {
+		tcp_chan_steer = 0x00b08b08;
+		mc_shared_chremap = 0x00b08b08;
+	}
+
 	WREG32(TCP_CHAN_STEER, tcp_chan_steer);
 	WREG32(MC_SHARED_CHREMAP, mc_shared_chremap);
 }

drivers/hwmon/Kconfig

@@ -333,7 +333,7 @@ config SENSORS_F71882FG
 	    F71858FG
 	    F71862FG
 	    F71863FG
-	    F71869F/E
+	    F71869F/E/A
 	    F71882FG
 	    F71883FG
 	    F71889FG/ED/A

drivers/hwmon/adm1275.c

@@ -32,6 +32,7 @@ static int adm1275_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
 	int config;
+	int ret;
 	struct pmbus_driver_info *info;
 
 	if (!i2c_check_functionality(client->adapter,
@@ -43,8 +44,10 @@ static int adm1275_probe(struct i2c_client *client,
 		return -ENOMEM;
 
 	config = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
-	if (config < 0)
-		return config;
+	if (config < 0) {
+		ret = config;
+		goto err_mem;
+	}
 
 	info->pages = 1;
 	info->direct[PSC_VOLTAGE_IN] = true;
@@ -76,7 +79,14 @@ static int adm1275_probe(struct i2c_client *client,
 	else
 		info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
 
-	return pmbus_do_probe(client, id, info);
+	ret = pmbus_do_probe(client, id, info);
+	if (ret)
+		goto err_mem;
+	return 0;
+
+err_mem:
+	kfree(info);
+	return ret;
 }
 
 static int adm1275_remove(struct i2c_client *client)

drivers/hwmon/emc6w201.c

@@ -78,8 +78,9 @@ static u16 emc6w201_read16(struct i2c_client *client, u8 reg)
 
 	lsb = i2c_smbus_read_byte_data(client, reg);
 	msb = i2c_smbus_read_byte_data(client, reg + 1);
-	if (lsb < 0 || msb < 0) {
-		dev_err(&client->dev, "16-bit read failed at 0x%02x\n", reg);
+	if (unlikely(lsb < 0 || msb < 0)) {
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			16, "read", reg);
 		return 0xFFFF;	/* Arbitrary value */
 	}
 
@@ -95,10 +96,39 @@ static int emc6w201_write16(struct i2c_client *client, u8 reg, u16 val)
 	int err;
 
 	err = i2c_smbus_write_byte_data(client, reg, val & 0xff);
-	if (!err)
+	if (likely(!err))
 		err = i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
-	if (err < 0)
-		dev_err(&client->dev, "16-bit write failed at 0x%02x\n", reg);
+	if (unlikely(err < 0))
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			16, "write", reg);
+
+	return err;
+}
+
+/* Read 8-bit value from register */
+static u8 emc6w201_read8(struct i2c_client *client, u8 reg)
+{
+	int val;
+
+	val = i2c_smbus_read_byte_data(client, reg);
+	if (unlikely(val < 0)) {
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			8, "read", reg);
+		return 0x00;	/* Arbitrary value */
+	}
+
+	return val;
+}
+
+/* Write 8-bit value to register */
+static int emc6w201_write8(struct i2c_client *client, u8 reg, u8 val)
+{
+	int err;
+
+	err = i2c_smbus_write_byte_data(client, reg, val);
+	if (unlikely(err < 0))
+		dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n",
+			8, "write", reg);
 
 	return err;
 }
@@ -114,25 +144,25 @@ static struct emc6w201_data *emc6w201_update_device(struct device *dev)
 	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
 		for (nr = 0; nr < 6; nr++) {
 			data->in[input][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_IN(nr));
 			data->in[min][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_IN_LOW(nr));
 			data->in[max][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_IN_HIGH(nr));
 		}
 
 		for (nr = 0; nr < 6; nr++) {
 			data->temp[input][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_TEMP(nr));
 			data->temp[min][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_TEMP_LOW(nr));
 			data->temp[max][nr] =
-				i2c_smbus_read_byte_data(client,
+				emc6w201_read8(client,
 						EMC6W201_REG_TEMP_HIGH(nr));
 		}
 
@@ -192,7 +222,7 @@ static ssize_t set_in(struct device *dev, struct device_attribute *devattr,
 
 	mutex_lock(&data->update_lock);
 	data->in[sf][nr] = SENSORS_LIMIT(val, 0, 255);
-	err = i2c_smbus_write_byte_data(client, reg, data->in[sf][nr]);
+	err = emc6w201_write8(client, reg, data->in[sf][nr]);
 	mutex_unlock(&data->update_lock);
 
 	return err < 0 ? err : count;
@@ -229,7 +259,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
 
 	mutex_lock(&data->update_lock);
 	data->temp[sf][nr] = SENSORS_LIMIT(val, -127, 128);
-	err = i2c_smbus_write_byte_data(client, reg, data->temp[sf][nr]);
+	err = emc6w201_write8(client, reg, data->temp[sf][nr]);
 	mutex_unlock(&data->update_lock);
 
 	return err < 0 ? err : count;
@@ -444,7 +474,7 @@ static int emc6w201_detect(struct i2c_client *client,
 
 	/* Check configuration */
 	config = i2c_smbus_read_byte_data(client, EMC6W201_REG_CONFIG);
-	if ((config & 0xF4) != 0x04)
+	if (config < 0 || (config & 0xF4) != 0x04)
 		return -ENODEV;
 	if (!(config & 0x01)) {
 		dev_err(&client->dev, "Monitoring not enabled\n");

drivers/hwmon/f71882fg.c

@@ -52,6 +52,7 @@
 #define SIO_F71858_ID		0x0507  /* Chipset ID */
 #define SIO_F71862_ID		0x0601	/* Chipset ID */
 #define SIO_F71869_ID		0x0814	/* Chipset ID */
+#define SIO_F71869A_ID		0x1007	/* Chipset ID */
 #define SIO_F71882_ID		0x0541	/* Chipset ID */
 #define SIO_F71889_ID		0x0723	/* Chipset ID */
 #define SIO_F71889E_ID		0x0909	/* Chipset ID */
@@ -108,8 +109,8 @@ static unsigned short force_id;
 module_param(force_id, ushort, 0);
 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 
-enum chips { f71808e, f71808a, f71858fg, f71862fg, f71869, f71882fg, f71889fg,
-	     f71889ed, f71889a, f8000, f81865f };
+enum chips { f71808e, f71808a, f71858fg, f71862fg, f71869, f71869a, f71882fg,
+	     f71889fg, f71889ed, f71889a, f8000, f81865f };
 
 static const char *f71882fg_names[] = {
 	"f71808e",
@@ -117,6 +118,7 @@ static const char *f71882fg_names[] = {
 	"f71858fg",
 	"f71862fg",
 	"f71869", /* Both f71869f and f71869e, reg. compatible and same id */
+	"f71869a",
 	"f71882fg",
 	"f71889fg", /* f81801u too, same id */
 	"f71889ed",
@@ -131,6 +133,7 @@ static const char f71882fg_has_in[][F71882FG_MAX_INS] = {
 	[f71858fg]	= { 1, 1, 1, 0, 0, 0, 0, 0, 0 },
 	[f71862fg]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71869]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
+	[f71869a]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71882fg]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71889fg]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
 	[f71889ed]	= { 1, 1, 1, 1, 1, 1, 1, 1, 1 },
@@ -145,6 +148,7 @@ static const char f71882fg_has_in1_alarm[] = {
 	[f71858fg]	= 0,
 	[f71862fg]	= 0,
 	[f71869]	= 0,
+	[f71869a]	= 0,
 	[f71882fg]	= 1,
 	[f71889fg]	= 1,
 	[f71889ed]	= 1,
@@ -159,6 +163,7 @@ static const char f71882fg_fan_has_beep[] = {
 	[f71858fg]	= 0,
 	[f71862fg]	= 1,
 	[f71869]	= 1,
+	[f71869a]	= 1,
 	[f71882fg]	= 1,
 	[f71889fg]	= 1,
 	[f71889ed]	= 1,
@@ -173,6 +178,7 @@ static const char f71882fg_nr_fans[] = {
 	[f71858fg]	= 3,
 	[f71862fg]	= 3,
 	[f71869]	= 3,
+	[f71869a]	= 3,
 	[f71882fg]	= 4,
 	[f71889fg]	= 3,
 	[f71889ed]	= 3,
@@ -187,6 +193,7 @@ static const char f71882fg_temp_has_beep[] = {
 	[f71858fg]	= 0,
 	[f71862fg]	= 1,
 	[f71869]	= 1,
+	[f71869a]	= 1,
 	[f71882fg]	= 1,
 	[f71889fg]	= 1,
 	[f71889ed]	= 1,
@@ -201,6 +208,7 @@ static const char f71882fg_nr_temps[] = {
 	[f71858fg]	= 3,
 	[f71862fg]	= 3,
 	[f71869]	= 3,
+	[f71869a]	= 3,
 	[f71882fg]	= 3,
 	[f71889fg]	= 3,
 	[f71889ed]	= 3,
@@ -2243,6 +2251,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 		case f71808e:
 		case f71808a:
 		case f71869:
+		case f71869a:
 			/* These always have signed auto point temps */
 			data->auto_point_temp_signed = 1;
 			/* Fall through to select correct fan/pwm reg bank! */
@@ -2305,6 +2314,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 		case f71808e:
 		case f71808a:
 		case f71869:
+		case f71869a:
 		case f71889fg:
 		case f71889ed:
 		case f71889a:
@@ -2528,6 +2538,9 @@ static int __init f71882fg_find(int sioaddr, unsigned short *address,
 	case SIO_F71869_ID:
 		sio_data->type = f71869;
 		break;
+	case SIO_F71869A_ID:
+		sio_data->type = f71869a;
+		break;
 	case SIO_F71882_ID:
 		sio_data->type = f71882fg;
 		break;
@@ -2662,7 +2675,7 @@ static void __exit f71882fg_exit(void)
 }
 
 MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver");
-MODULE_AUTHOR("Hans Edgington, Hans de Goede (hdegoede@redhat.com)");
+MODULE_AUTHOR("Hans Edgington, Hans de Goede <hdegoede@redhat.com>");
 MODULE_LICENSE("GPL");
 
 module_init(f71882fg_init);

drivers/hwmon/hwmon-vid.c

@@ -202,7 +202,7 @@ static struct vrm_model vrm_models[] = {
 
 	{X86_VENDOR_CENTAUR, 0x6, 0x7, ANY, 85},	/* Eden ESP/Ezra */
 	{X86_VENDOR_CENTAUR, 0x6, 0x8, 0x7, 85},	/* Ezra T */
-	{X86_VENDOR_CENTAUR, 0x6, 0x9, 0x7, 85},	/* Nemiah */
+	{X86_VENDOR_CENTAUR, 0x6, 0x9, 0x7, 85},	/* Nehemiah */
 	{X86_VENDOR_CENTAUR, 0x6, 0x9, ANY, 17},	/* C3-M, Eden-N */
 	{X86_VENDOR_CENTAUR, 0x6, 0xA, 0x7, 0},		/* No information */
 	{X86_VENDOR_CENTAUR, 0x6, 0xA, ANY, 13},	/* C7, Esther */

drivers/hwmon/pmbus.c

@@ -47,12 +47,14 @@ static void pmbus_find_sensor_groups(struct i2c_client *client,
 	if (info->func[0]
 	    && pmbus_check_byte_register(client, 0, PMBUS_STATUS_INPUT))
 		info->func[0] |= PMBUS_HAVE_STATUS_INPUT;
-	if (pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_1)) {
+	if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_12) &&
+	    pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_1)) {
 		info->func[0] |= PMBUS_HAVE_FAN12;
 		if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_12))
 			info->func[0] |= PMBUS_HAVE_STATUS_FAN12;
 	}
-	if (pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_3)) {
+	if (pmbus_check_byte_register(client, 0, PMBUS_FAN_CONFIG_34) &&
+	    pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_3)) {
 		info->func[0] |= PMBUS_HAVE_FAN34;
 		if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_34))
 			info->func[0] |= PMBUS_HAVE_STATUS_FAN34;
@@ -63,6 +65,10 @@ static void pmbus_find_sensor_groups(struct i2c_client *client,
 					      PMBUS_STATUS_TEMPERATURE))
 			info->func[0] |= PMBUS_HAVE_STATUS_TEMP;
 	}
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_2))
+		info->func[0] |= PMBUS_HAVE_TEMP2;
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_3))
+		info->func[0] |= PMBUS_HAVE_TEMP3;
 
 	/* Sensors detected on all pages */
 	for (page = 0; page < info->pages; page++) {

drivers/hwmon/pmbus_core.c

@@ -1430,14 +1430,9 @@ int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
 	i2c_set_clientdata(client, data);
 	mutex_init(&data->update_lock);
 
-	/*
-	 * Bail out if status register or PMBus revision register
-	 * does not exist.
-	 */
-	if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0
-	    || i2c_smbus_read_byte_data(client, PMBUS_REVISION) < 0) {
-		dev_err(&client->dev,
-			"Status or revision register not found\n");
+	/* Bail out if PMBus status register does not exist. */
+	if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0) {
+		dev_err(&client->dev, "PMBus status register not found\n");
 		ret = -ENODEV;
 		goto out_data;
 	}

drivers/hwmon/sch5627.c

@@ -887,7 +887,7 @@ static void __exit sch5627_exit(void)
 }
 
 MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver");
-MODULE_AUTHOR("Hans de Goede (hdegoede@redhat.com)");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
 MODULE_LICENSE("GPL");
 
 module_init(sch5627_init);

drivers/i2c/busses/i2c-taos-evm.c

@@ -234,7 +234,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
 
 	if (taos->state != TAOS_STATE_IDLE) {
 		err = -ENODEV;
-		dev_dbg(&serio->dev, "TAOS EVM reset failed (state=%d, "
+		dev_err(&serio->dev, "TAOS EVM reset failed (state=%d, "
 			"pos=%d)\n", taos->state, taos->pos);
 		goto exit_close;
 	}
@@ -255,7 +255,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
 					 msecs_to_jiffies(250));
 	if (taos->state != TAOS_STATE_IDLE) {
 		err = -ENODEV;
-		dev_err(&adapter->dev, "Echo off failed "
+		dev_err(&serio->dev, "TAOS EVM echo off failed "
 			"(state=%d)\n", taos->state);
 		goto exit_close;
 	}
@@ -263,7 +263,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
 	err = i2c_add_adapter(adapter);
 	if (err)
 		goto exit_close;
-	dev_dbg(&serio->dev, "Connected to TAOS EVM\n");
+	dev_info(&serio->dev, "Connected to TAOS EVM\n");
 
 	taos->client = taos_instantiate_device(adapter);
 	return 0;
@@ -288,7 +288,7 @@ static void taos_disconnect(struct serio *serio)
 	serio_set_drvdata(serio, NULL);
 	kfree(taos);
 
-	dev_dbg(&serio->dev, "Disconnected from TAOS EVM\n");
+	dev_info(&serio->dev, "Disconnected from TAOS EVM\n");
 }
 
 static struct serio_device_id taos_serio_ids[] = {

drivers/i2c/muxes/pca954x.c

@@ -201,10 +201,11 @@ static int pca954x_probe(struct i2c_client *client,
 
 	i2c_set_clientdata(client, data);
 
-	/* Read the mux register at addr to verify
-	 * that the mux is in fact present.
+	/* Write the mux register at addr to verify
+	 * that the mux is in fact present. This also
+	 * initializes the mux to disconnected state.
 	 */
-	if (i2c_smbus_read_byte(client) < 0) {
+	if (i2c_smbus_write_byte(client, 0) < 0) {
 		dev_warn(&client->dev, "probe failed\n");
 		goto exit_free;
 	}

drivers/infiniband/core/cm.c

@@ -3641,7 +3641,8 @@ static struct kobj_type cm_port_obj_type = {
 
 static char *cm_devnode(struct device *dev, mode_t *mode)
 {
-	*mode = 0666;
+	if (mode)
+		*mode = 0666;
 	return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
 }
 

drivers/infiniband/core/uverbs_main.c

@@ -826,7 +826,8 @@ static void ib_uverbs_remove_one(struct ib_device *device)
 
 static char *uverbs_devnode(struct device *dev, mode_t *mode)
 {
-	*mode = 0666;
+	if (mode)
+		*mode = 0666;
 	return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
 }
 

drivers/mtd/nand/fsl_elbc_nand.c

@@ -339,9 +339,9 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command,
 		                    (FIR_OP_UA  << FIR_OP1_SHIFT) |
 		                    (FIR_OP_RBW << FIR_OP2_SHIFT));
 		out_be32(&lbc->fcr, NAND_CMD_READID << FCR_CMD0_SHIFT);
-		/* 5 bytes for manuf, device and exts */
-		out_be32(&lbc->fbcr, 5);
-		elbc_fcm_ctrl->read_bytes = 5;
+		/* nand_get_flash_type() reads 8 bytes of entire ID string */
+		out_be32(&lbc->fbcr, 8);
+		elbc_fcm_ctrl->read_bytes = 8;
 		elbc_fcm_ctrl->use_mdr = 1;
 		elbc_fcm_ctrl->mdr = 0;
 

drivers/net/Kconfig

@@ -3416,7 +3416,8 @@ config NETCONSOLE
 
 config NETCONSOLE_DYNAMIC
 	bool "Dynamic reconfiguration of logging targets"
-	depends on NETCONSOLE && SYSFS && CONFIGFS_FS
+	depends on NETCONSOLE && SYSFS && CONFIGFS_FS && \
+			!(NETCONSOLE=y && CONFIGFS_FS=m)
 	help
 	  This option enables the ability to dynamically reconfigure target
 	  parameters (interface, IP addresses, port numbers, MAC addresses)

drivers/net/bnx2x/bnx2x_main.c

@@ -49,6 +49,7 @@
 #include <linux/zlib.h>
 #include <linux/io.h>
 #include <linux/stringify.h>
+#include <linux/vmalloc.h>
 
 #define BNX2X_MAIN
 #include "bnx2x.h"
@@ -4537,8 +4538,7 @@ static int bnx2x_gunzip_init(struct bnx2x *bp)
 	if (bp->strm  == NULL)
 		goto gunzip_nomem2;
 
-	bp->strm->workspace = kmalloc(zlib_inflate_workspacesize(),
-				      GFP_KERNEL);
+	bp->strm->workspace = vmalloc(zlib_inflate_workspacesize());
 	if (bp->strm->workspace == NULL)
 		goto gunzip_nomem3;
 
@@ -4562,7 +4562,7 @@ gunzip_nomem1:
 static void bnx2x_gunzip_end(struct bnx2x *bp)
 {
 	if (bp->strm) {
-		kfree(bp->strm->workspace);
+		vfree(bp->strm->workspace);
 		kfree(bp->strm);
 		bp->strm = NULL;
 	}

drivers/net/can/Kconfig

@@ -36,7 +36,7 @@ config CAN_SLCAN
 config CAN_DEV
 	tristate "Platform CAN drivers with Netlink support"
 	depends on CAN
-	default Y
+	default y
 	---help---
 	  Enables the common framework for platform CAN drivers with Netlink
 	  support. This is the standard library for CAN drivers.
@@ -45,7 +45,7 @@ config CAN_DEV
 config CAN_CALC_BITTIMING
 	bool "CAN bit-timing calculation"
 	depends on CAN_DEV
-	default Y
+	default y
 	---help---
 	  If enabled, CAN bit-timing parameters will be calculated for the
 	  bit-rate specified via Netlink argument "bitrate" when the device

drivers/net/cxgb3/sge.c

@@ -2026,7 +2026,7 @@ static void rx_eth(struct adapter *adap, struct sge_rspq *rq,
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
 	} else
 		skb_checksum_none_assert(skb);
-	skb_record_rx_queue(skb, qs - &adap->sge.qs[0]);
+	skb_record_rx_queue(skb, qs - &adap->sge.qs[pi->first_qset]);
 
 	if (unlikely(p->vlan_valid)) {
 		struct vlan_group *grp = pi->vlan_grp;
@@ -2145,7 +2145,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
 	if (!complete)
 		return;
 
-	skb_record_rx_queue(skb, qs - &adap->sge.qs[0]);
+	skb_record_rx_queue(skb, qs - &adap->sge.qs[pi->first_qset]);
 
 	if (unlikely(cpl->vlan_valid)) {
 		struct vlan_group *grp = pi->vlan_grp;

drivers/net/ppp_deflate.c

@@ -305,7 +305,7 @@ static void z_decomp_free(void *arg)
 
 	if (state) {
 		zlib_inflateEnd(&state->strm);
-		kfree(state->strm.workspace);
+		vfree(state->strm.workspace);
 		kfree(state);
 	}
 }
@@ -345,8 +345,7 @@ static void *z_decomp_alloc(unsigned char *options, int opt_len)
 
 	state->w_size         = w_size;
 	state->strm.next_out  = NULL;
-	state->strm.workspace = kmalloc(zlib_inflate_workspacesize(),
-					GFP_KERNEL|__GFP_REPEAT);
+	state->strm.workspace = vmalloc(zlib_inflate_workspacesize());
 	if (state->strm.workspace == NULL)
 		goto out_free;
 

drivers/net/r8169.c

@@ -742,7 +742,7 @@ static void rtl8168_oob_notify(struct rtl8169_private *tp, u8 cmd)
 	msleep(2);
 	for (i = 0; i < 5; i++) {
 		udelay(100);
-		if (!(RTL_R32(ERIDR) & ERIAR_FLAG))
+		if (!(RTL_R32(ERIAR) & ERIAR_FLAG))
 			break;
 	}
 

drivers/net/rionet.c

@@ -378,7 +378,7 @@ static int rionet_close(struct net_device *ndev)
 
 static void rionet_remove(struct rio_dev *rdev)
 {
-	struct net_device *ndev = NULL;
+	struct net_device *ndev = rio_get_drvdata(rdev);
 	struct rionet_peer *peer, *tmp;
 
 	free_pages((unsigned long)rionet_active, rdev->net->hport->sys_size ?
@@ -433,22 +433,12 @@ static const struct net_device_ops rionet_netdev_ops = {
 	.ndo_set_mac_address	= eth_mac_addr,
 };
 
-static int rionet_setup_netdev(struct rio_mport *mport)
+static int rionet_setup_netdev(struct rio_mport *mport, struct net_device *ndev)
 {
 	int rc = 0;
-	struct net_device *ndev = NULL;
 	struct rionet_private *rnet;
 	u16 device_id;
 
-	/* Allocate our net_device structure */
-	ndev = alloc_etherdev(sizeof(struct rionet_private));
-	if (ndev == NULL) {
-		printk(KERN_INFO "%s: could not allocate ethernet device.\n",
-		       DRV_NAME);
-		rc = -ENOMEM;
-		goto out;
-	}
-
 	rionet_active = (struct rio_dev **)__get_free_pages(GFP_KERNEL,
 			mport->sys_size ? __fls(sizeof(void *)) + 4 : 0);
 	if (!rionet_active) {
@@ -504,11 +494,21 @@ static int rionet_probe(struct rio_dev *rdev, const struct rio_device_id *id)
 	int rc = -ENODEV;
 	u32 lpef, lsrc_ops, ldst_ops;
 	struct rionet_peer *peer;
+	struct net_device *ndev = NULL;
 
 	/* If local device is not rionet capable, give up quickly */
 	if (!rionet_capable)
 		goto out;
 
+	/* Allocate our net_device structure */
+	ndev = alloc_etherdev(sizeof(struct rionet_private));
+	if (ndev == NULL) {
+		printk(KERN_INFO "%s: could not allocate ethernet device.\n",
+		       DRV_NAME);
+		rc = -ENOMEM;
+		goto out;
+	}
+
 	/*
 	 * First time through, make sure local device is rionet
 	 * capable, setup netdev,  and set flags so this is skipped
@@ -529,7 +529,7 @@ static int rionet_probe(struct rio_dev *rdev, const struct rio_device_id *id)
 			goto out;
 		}
 
-		rc = rionet_setup_netdev(rdev->net->hport);
+		rc = rionet_setup_netdev(rdev->net->hport, ndev);
 		rionet_check = 1;
 	}
 
@@ -546,6 +546,8 @@ static int rionet_probe(struct rio_dev *rdev, const struct rio_device_id *id)
 		list_add_tail(&peer->node, &rionet_peers);
 	}
 
+	rio_set_drvdata(rdev, ndev);
+
       out:
 	return rc;
 }

drivers/net/usb/kalmia.c

@@ -100,34 +100,42 @@ kalmia_send_init_packet(struct usbnet *dev, u8 *init_msg, u8 init_msg_len,
 static int
 kalmia_init_and_get_ethernet_addr(struct usbnet *dev, u8 *ethernet_addr)
 {
-	char init_msg_1[] =
+	const static char init_msg_1[] =
 		{ 0x57, 0x50, 0x04, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00,
 		0x00, 0x00 };
-	char init_msg_2[] =
+	const static char init_msg_2[] =
 		{ 0x57, 0x50, 0x04, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0xf4,
 		0x00, 0x00 };
-	char receive_buf[28];
+	const static int buflen = 28;
+	char *usb_buf;
 	int status;
 
-	status = kalmia_send_init_packet(dev, init_msg_1, sizeof(init_msg_1)
-		/ sizeof(init_msg_1[0]), receive_buf, 24);
+	usb_buf = kmalloc(buflen, GFP_DMA | GFP_KERNEL);
+	if (!usb_buf)
+		return -ENOMEM;
+
+	memcpy(usb_buf, init_msg_1, 12);
+	status = kalmia_send_init_packet(dev, usb_buf, sizeof(init_msg_1)
+		/ sizeof(init_msg_1[0]), usb_buf, 24);
 	if (status != 0)
 		return status;
 
-	status = kalmia_send_init_packet(dev, init_msg_2, sizeof(init_msg_2)
-		/ sizeof(init_msg_2[0]), receive_buf, 28);
+	memcpy(usb_buf, init_msg_2, 12);
+	status = kalmia_send_init_packet(dev, usb_buf, sizeof(init_msg_2)
+		/ sizeof(init_msg_2[0]), usb_buf, 28);
 	if (status != 0)
 		return status;
 
-	memcpy(ethernet_addr, receive_buf + 10, ETH_ALEN);
+	memcpy(ethernet_addr, usb_buf + 10, ETH_ALEN);
 
+	kfree(usb_buf);
 	return status;
 }
 
 static int
 kalmia_bind(struct usbnet *dev, struct usb_interface *intf)
 {
-	u8 status;
+	int status;
 	u8 ethernet_addr[ETH_ALEN];
 
 	/* Don't bind to AT command interface */
@@ -190,7 +198,8 @@ kalmia_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
 	dev_kfree_skb_any(skb);
 	skb = skb2;
 
-	done: header_start = skb_push(skb, KALMIA_HEADER_LENGTH);
+done:
+	header_start = skb_push(skb, KALMIA_HEADER_LENGTH);
 	ether_type_1 = header_start[KALMIA_HEADER_LENGTH + 12];
 	ether_type_2 = header_start[KALMIA_HEADER_LENGTH + 13];
 
@@ -201,9 +210,8 @@ kalmia_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
 	header_start[0] = 0x57;
 	header_start[1] = 0x44;
 	content_len = skb->len - KALMIA_HEADER_LENGTH;
-	header_start[2] = (content_len & 0xff); /* low byte */
-	header_start[3] = (content_len >> 8); /* high byte */
 
+	put_unaligned_le16(content_len, &header_start[2]);
 	header_start[4] = ether_type_1;
 	header_start[5] = ether_type_2;
 
@@ -231,13 +239,13 @@ kalmia_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 	 * Our task here is to strip off framing, leaving skb with one
 	 * data frame for the usbnet framework code to process.
 	 */
-	const u8 HEADER_END_OF_USB_PACKET[] =
+	const static u8 HEADER_END_OF_USB_PACKET[] =
 		{ 0x57, 0x5a, 0x00, 0x00, 0x08, 0x00 };
-	const u8 EXPECTED_UNKNOWN_HEADER_1[] =
+	const static u8 EXPECTED_UNKNOWN_HEADER_1[] =
 		{ 0x57, 0x43, 0x1e, 0x00, 0x15, 0x02 };
-	const u8 EXPECTED_UNKNOWN_HEADER_2[] =
+	const static u8 EXPECTED_UNKNOWN_HEADER_2[] =
 		{ 0x57, 0x50, 0x0e, 0x00, 0x00, 0x00 };
-	u8 i = 0;
+	int i = 0;
 
 	/* incomplete header? */
 	if (skb->len < KALMIA_HEADER_LENGTH)
@@ -285,7 +293,7 @@ kalmia_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 
 		/* subtract start header and end header */
 		usb_packet_length = skb->len - (2 * KALMIA_HEADER_LENGTH);
-		ether_packet_length = header_start[2] + (header_start[3] << 8);
+		ether_packet_length = get_unaligned_le16(&header_start[2]);
 		skb_pull(skb, KALMIA_HEADER_LENGTH);
 
 		/* Some small packets misses end marker */

drivers/net/usb/zaurus.c

@@ -331,17 +331,7 @@ static const struct usb_device_id	products [] = {
 	ZAURUS_MASTER_INTERFACE,
 	.driver_info = ZAURUS_PXA_INFO,
 },
-
-
-/* At least some of the newest PXA units have very different lies about
- * their standards support:  they claim to be cell phones offering
- * direct access to their radios!  (No, they don't conform to CDC MDLM.)
- */
 {
-	USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
-			USB_CDC_PROTO_NONE),
-	.driver_info = (unsigned long) &bogus_mdlm_info,
-}, {
 	/* Motorola MOTOMAGX phones */
 	USB_DEVICE_AND_INTERFACE_INFO(0x22b8, 0x6425, USB_CLASS_COMM,
 			USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),

drivers/net/wireless/rtlwifi/pci.c

@@ -1624,6 +1624,16 @@ static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
 	pci_read_config_byte(pdev, 0x8, &revisionid);
 	pci_read_config_word(pdev, 0x3C, &irqline);
 
+	/* PCI ID 0x10ec:0x8192 occurs for both RTL8192E, which uses
+	 * r8192e_pci, and RTL8192SE, which uses this driver. If the
+	 * revision ID is RTL_PCI_REVISION_ID_8192PCIE (0x01), then
+	 * the correct driver is r8192e_pci, thus this routine should
+	 * return false.
+	 */
+	if (deviceid == RTL_PCI_8192SE_DID &&
+	    revisionid == RTL_PCI_REVISION_ID_8192PCIE)
+		return false;
+
 	if (deviceid == RTL_PCI_8192_DID ||
 	    deviceid == RTL_PCI_0044_DID ||
 	    deviceid == RTL_PCI_0047_DID ||
@@ -1856,7 +1866,8 @@ int __devinit rtl_pci_probe(struct pci_dev *pdev,
 	pci_write_config_byte(pdev, 0x04, 0x07);
 
 	/* find adapter */
-	_rtl_pci_find_adapter(pdev, hw);
+	if (!_rtl_pci_find_adapter(pdev, hw))
+		goto fail3;
 
 	/* Init IO handler */
 	_rtl_pci_io_handler_init(&pdev->dev, hw);

drivers/net/wireless/rtlwifi/rtl8192cu/sw.c

@@ -53,6 +53,8 @@ MODULE_FIRMWARE("rtlwifi/rtl8192cufw.bin");
 static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	const struct firmware *firmware;
+	int err;
 
 	rtlpriv->dm.dm_initialgain_enable = 1;
 	rtlpriv->dm.dm_flag = 0;
@@ -64,6 +66,24 @@ static int rtl92cu_init_sw_vars(struct ieee80211_hw *hw)
 			 ("Can't alloc buffer for fw.\n"));
 		return 1;
 	}
+	/* request fw */
+	err = request_firmware(&firmware, rtlpriv->cfg->fw_name,
+			rtlpriv->io.dev);
+	if (err) {
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+			 ("Failed to request firmware!\n"));
+		return 1;
+	}
+	if (firmware->size > 0x4000) {
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+			 ("Firmware is too big!\n"));
+		release_firmware(firmware);
+		return 1;
+	}
+	memcpy(rtlpriv->rtlhal.pfirmware, firmware->data, firmware->size);
+	rtlpriv->rtlhal.fwsize = firmware->size;
+	release_firmware(firmware);
+
 	return 0;
 }
 

drivers/scsi/Kconfig

@@ -830,6 +830,19 @@ config SCSI_GDTH
 	  To compile this driver as a module, choose M here: the
 	  module will be called gdth.
 
+config SCSI_ISCI
+	tristate "Intel(R) C600 Series Chipset SAS Controller"
+	depends on PCI && SCSI
+	depends on X86
+	# (temporary): known alpha quality driver
+	depends on EXPERIMENTAL
+	select SCSI_SAS_LIBSAS
+	---help---
+	  This driver supports the 6Gb/s SAS capabilities of the storage
+	  control unit found in the Intel(R) C600 series chipset.
+
+	  The experimental tag will be removed after the driver exits alpha
+
 config SCSI_GENERIC_NCR5380
 	tristate "Generic NCR5380/53c400 SCSI PIO support"
 	depends on ISA && SCSI

drivers/scsi/Makefile

@@ -73,6 +73,7 @@ obj-$(CONFIG_SCSI_AACRAID)	+= aacraid/
 obj-$(CONFIG_SCSI_AIC7XXX_OLD)	+= aic7xxx_old.o
 obj-$(CONFIG_SCSI_AIC94XX)	+= aic94xx/
 obj-$(CONFIG_SCSI_PM8001)	+= pm8001/
+obj-$(CONFIG_SCSI_ISCI)		+= isci/
 obj-$(CONFIG_SCSI_IPS)		+= ips.o
 obj-$(CONFIG_SCSI_FD_MCS)	+= fd_mcs.o
 obj-$(CONFIG_SCSI_FUTURE_DOMAIN)+= fdomain.o

drivers/scsi/hpsa.c

@@ -1037,6 +1037,7 @@ static void complete_scsi_command(struct CommandList *cp)
 	unsigned char sense_key;
 	unsigned char asc;      /* additional sense code */
 	unsigned char ascq;     /* additional sense code qualifier */
+	unsigned long sense_data_size;
 
 	ei = cp->err_info;
 	cmd = (struct scsi_cmnd *) cp->scsi_cmd;
@@ -1051,10 +1052,14 @@ static void complete_scsi_command(struct CommandList *cp)
 	cmd->result |= ei->ScsiStatus;
 
 	/* copy the sense data whether we need to or not. */
-	memcpy(cmd->sense_buffer, ei->SenseInfo,
-		ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
-			SCSI_SENSE_BUFFERSIZE :
-			ei->SenseLen);
+	if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
+		sense_data_size = SCSI_SENSE_BUFFERSIZE;
+	else
+		sense_data_size = sizeof(ei->SenseInfo);
+	if (ei->SenseLen < sense_data_size)
+		sense_data_size = ei->SenseLen;
+
+	memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
 	scsi_set_resid(cmd, ei->ResidualCnt);
 
 	if (ei->CommandStatus == 0) {
@@ -2580,7 +2585,8 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
 		c->SG[0].Ext = 0; /* we are not chaining*/
 	}
 	hpsa_scsi_do_simple_cmd_core(h, c);
-	hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
+	if (iocommand.buf_size > 0)
+		hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
 	check_ioctl_unit_attention(h, c);
 
 	/* Copy the error information out */

drivers/scsi/ibmvscsi/ibmvfc.c

@@ -4306,8 +4306,8 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
 		spin_lock_irqsave(vhost->host->host_lock, flags);
 		if (rc == H_CLOSED)
 			vio_enable_interrupts(to_vio_dev(vhost->dev));
-		else if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
-			 (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) {
+		if (rc || (rc = ibmvfc_send_crq_init(vhost)) ||
+		    (rc = vio_enable_interrupts(to_vio_dev(vhost->dev)))) {
 			ibmvfc_link_down(vhost, IBMVFC_LINK_DEAD);
 			dev_err(vhost->dev, "Error after reset (rc=%d)\n", rc);
 		}

drivers/scsi/isci/Makefile

@@ -0,0 +1,8 @@
+obj-$(CONFIG_SCSI_ISCI) += isci.o
+isci-objs := init.o phy.o request.o \
+	     remote_device.o port.o \
+	     host.o task.o probe_roms.o \
+	     remote_node_context.o \
+	     remote_node_table.o \
+	     unsolicited_frame_control.o \
+	     port_config.o \

drivers/scsi/isci/firmware/Makefile

@@ -0,0 +1,19 @@
+# Makefile for create_fw
+#
+CC=gcc
+CFLAGS=-c -Wall -O2 -g
+LDFLAGS=
+SOURCES=create_fw.c
+OBJECTS=$(SOURCES:.cpp=.o)
+EXECUTABLE=create_fw
+
+all: $(SOURCES) $(EXECUTABLE)
+
+$(EXECUTABLE): $(OBJECTS)
+	$(CC) $(LDFLAGS) $(OBJECTS) -o $@
+
+.c.o:
+	$(CC) $(CFLAGS) $< -O $@
+
+clean:
+	rm -f *.o $(EXECUTABLE)

drivers/scsi/isci/firmware/README

@@ -0,0 +1,36 @@
+This defines the temporary binary blow we are to pass to the SCU
+driver to emulate the binary firmware that we will eventually be
+able to access via NVRAM on the SCU controller.
+
+The current size of the binary blob is expected to be 149 bytes or larger
+
+Header Types:
+0x1: Phy Masks
+0x2: Phy Gens
+0x3: SAS Addrs
+0xff: End of Data
+
+ID string - u8[12]: "#SCU MAGIC#\0"
+Version - u8: 1
+SubVersion - u8: 0
+
+Header Type - u8: 0x1
+Size - u8: 8
+Phy Mask - u32[8]
+
+Header Type - u8: 0x2
+Size - u8: 8
+Phy Gen - u32[8]
+
+Header Type - u8: 0x3
+Size - u8: 8
+Sas Addr - u64[8]
+
+Header Type - u8: 0xf
+
+
+==============================================================================
+
+Place isci_firmware.bin in /lib/firmware
+Be sure to recreate the initramfs image to include the firmware.
+

drivers/scsi/isci/firmware/create_fw.c

@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <asm/types.h>
+#include <strings.h>
+#include <stdint.h>
+
+#include "create_fw.h"
+#include "../probe_roms.h"
+
+int write_blob(struct isci_orom *isci_orom)
+{
+	FILE *fd;
+	int err;
+	size_t count;
+
+	fd = fopen(blob_name, "w+");
+	if (!fd) {
+		perror("Open file for write failed");
+		fclose(fd);
+		return -EIO;
+	}
+
+	count = fwrite(isci_orom, sizeof(struct isci_orom), 1, fd);
+	if (count != 1) {
+		perror("Write data failed");
+		fclose(fd);
+		return -EIO;
+	}
+
+	fclose(fd);
+
+	return 0;
+}
+
+void set_binary_values(struct isci_orom *isci_orom)
+{
+	int ctrl_idx, phy_idx, port_idx;
+
+	/* setting OROM signature */
+	strncpy(isci_orom->hdr.signature, sig, strlen(sig));
+	isci_orom->hdr.version = version;
+	isci_orom->hdr.total_block_length = sizeof(struct isci_orom);
+	isci_orom->hdr.hdr_length = sizeof(struct sci_bios_oem_param_block_hdr);
+	isci_orom->hdr.num_elements = num_elements;
+
+	for (ctrl_idx = 0; ctrl_idx < 2; ctrl_idx++) {
+		isci_orom->ctrl[ctrl_idx].controller.mode_type = mode_type;
+		isci_orom->ctrl[ctrl_idx].controller.max_concurrent_dev_spin_up =
+			max_num_concurrent_dev_spin_up;
+		isci_orom->ctrl[ctrl_idx].controller.do_enable_ssc =
+			enable_ssc;
+
+		for (port_idx = 0; port_idx < 4; port_idx++)
+			isci_orom->ctrl[ctrl_idx].ports[port_idx].phy_mask =
+				phy_mask[ctrl_idx][port_idx];
+
+		for (phy_idx = 0; phy_idx < 4; phy_idx++) {
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.high =
+				(__u32)(sas_addr[ctrl_idx][phy_idx] >> 32);
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.low =
+				(__u32)(sas_addr[ctrl_idx][phy_idx]);
+
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control0 =
+				afe_tx_amp_control0;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control1 =
+				afe_tx_amp_control1;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control2 =
+				afe_tx_amp_control2;
+			isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control3 =
+				afe_tx_amp_control3;
+		}
+	}
+}
+
+int main(void)
+{
+	int err;
+	struct isci_orom *isci_orom;
+
+	isci_orom = malloc(sizeof(struct isci_orom));
+	memset(isci_orom, 0, sizeof(struct isci_orom));
+
+	set_binary_values(isci_orom);
+
+	err = write_blob(isci_orom);
+	if (err < 0) {
+		free(isci_orom);
+		return err;
+	}
+
+	free(isci_orom);
+	return 0;
+}

drivers/scsi/isci/firmware/create_fw.h

@@ -0,0 +1,77 @@
+#ifndef _CREATE_FW_H_
+#define _CREATE_FW_H_
+#include "../probe_roms.h"
+
+
+/* we are configuring for 2 SCUs */
+static const int num_elements = 2;
+
+/*
+ * For all defined arrays:
+ * elements 0-3 are for SCU0, ports 0-3
+ * elements 4-7 are for SCU1, ports 0-3
+ *
+ * valid configurations for one SCU are:
+ *  P0  P1  P2  P3
+ * ----------------
+ * 0xF,0x0,0x0,0x0 # 1 x4 port
+ * 0x3,0x0,0x4,0x8 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are each x1
+ *                 # ports
+ * 0x1,0x2,0xC,0x0 # Phys 0 and 1 are each x1 ports, phy 2 and phy 3 are a x2
+ *                 # port
+ * 0x3,0x0,0xC,0x0 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are a x2 port
+ * 0x1,0x2,0x4,0x8 # Each phy is a x1 port (this is the default configuration)
+ *
+ * if there is a port/phy on which you do not wish to override the default
+ * values, use the value assigned to UNINIT_PARAM (255).
+ */
+
+/* discovery mode type (port auto config mode by default ) */
+
+/*
+ * if there is a port/phy on which you do not wish to override the default
+ * values, use the value "0000000000000000". SAS address of zero's is
+ * considered invalid and will not be used.
+ */
+#ifdef MPC
+static const int mode_type = SCIC_PORT_MANUAL_CONFIGURATION_MODE;
+static const __u8 phy_mask[2][4] = { {1, 2, 4, 8},
+				     {1, 2, 4, 8} };
+static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFFF0000001ULL,
+						     0x5FCFFFFFF0000002ULL,
+						     0x5FCFFFFFF0000003ULL,
+						     0x5FCFFFFFF0000004ULL },
+						   { 0x5FCFFFFFF0000005ULL,
+						     0x5FCFFFFFF0000006ULL,
+						     0x5FCFFFFFF0000007ULL,
+						     0x5FCFFFFFF0000008ULL } };
+#else	/* APC (default) */
+static const int mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+static const __u8 phy_mask[2][4];
+static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL,
+						     0x5FCFFFFF00000001ULL },
+						   { 0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL,
+						     0x5FCFFFFF00000002ULL } };
+#endif
+
+/* Maximum number of concurrent device spin up */
+static const int max_num_concurrent_dev_spin_up = 1;
+
+/* enable of ssc operation */
+static const int enable_ssc;
+
+/* AFE_TX_AMP_CONTROL */
+static const unsigned int afe_tx_amp_control0 = 0x000bdd08;
+static const unsigned int afe_tx_amp_control1 = 0x000ffc00;
+static const unsigned int afe_tx_amp_control2 = 0x000b7c09;
+static const unsigned int afe_tx_amp_control3 = 0x000afc6e;
+
+static const char blob_name[] = "isci_firmware.bin";
+static const char sig[] = "ISCUOEMB";
+static const unsigned char version = 0x10;
+
+#endif

drivers/scsi/isci/host.c

@@ -0,0 +1,2751 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <linux/circ_buf.h>
+#include <linux/device.h>
+#include <scsi/sas.h>
+#include "host.h"
+#include "isci.h"
+#include "port.h"
+#include "host.h"
+#include "probe_roms.h"
+#include "remote_device.h"
+#include "request.h"
+#include "scu_completion_codes.h"
+#include "scu_event_codes.h"
+#include "registers.h"
+#include "scu_remote_node_context.h"
+#include "scu_task_context.h"
+
+#define SCU_CONTEXT_RAM_INIT_STALL_TIME      200
+
+#define smu_max_ports(dcc_value) \
+	(\
+		(((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_MASK) \
+		 >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_LP_SHIFT) + 1 \
+	)
+
+#define smu_max_task_contexts(dcc_value)	\
+	(\
+		(((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_MASK) \
+		 >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_TC_SHIFT) + 1 \
+	)
+
+#define smu_max_rncs(dcc_value) \
+	(\
+		(((dcc_value) & SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_MASK) \
+		 >> SMU_DEVICE_CONTEXT_CAPACITY_MAX_RNC_SHIFT) + 1 \
+	)
+
+#define SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT      100
+
+/**
+ *
+ *
+ * The number of milliseconds to wait while a given phy is consuming power
+ * before allowing another set of phys to consume power. Ultimately, this will
+ * be specified by OEM parameter.
+ */
+#define SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL 500
+
+/**
+ * NORMALIZE_PUT_POINTER() -
+ *
+ * This macro will normalize the completion queue put pointer so its value can
+ * be used as an array inde
+ */
+#define NORMALIZE_PUT_POINTER(x) \
+	((x) & SMU_COMPLETION_QUEUE_PUT_POINTER_MASK)
+
+
+/**
+ * NORMALIZE_EVENT_POINTER() -
+ *
+ * This macro will normalize the completion queue event entry so its value can
+ * be used as an index.
+ */
+#define NORMALIZE_EVENT_POINTER(x) \
+	(\
+		((x) & SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_MASK) \
+		>> SMU_COMPLETION_QUEUE_GET_EVENT_POINTER_SHIFT	\
+	)
+
+/**
+ * NORMALIZE_GET_POINTER() -
+ *
+ * This macro will normalize the completion queue get pointer so its value can
+ * be used as an index into an array
+ */
+#define NORMALIZE_GET_POINTER(x) \
+	((x) & SMU_COMPLETION_QUEUE_GET_POINTER_MASK)
+
+/**
+ * NORMALIZE_GET_POINTER_CYCLE_BIT() -
+ *
+ * This macro will normalize the completion queue cycle pointer so it matches
+ * the completion queue cycle bit
+ */
+#define NORMALIZE_GET_POINTER_CYCLE_BIT(x) \
+	((SMU_CQGR_CYCLE_BIT & (x)) << (31 - SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT))
+
+/**
+ * COMPLETION_QUEUE_CYCLE_BIT() -
+ *
+ * This macro will return the cycle bit of the completion queue entry
+ */
+#define COMPLETION_QUEUE_CYCLE_BIT(x) ((x) & 0x80000000)
+
+/* Init the state machine and call the state entry function (if any) */
+void sci_init_sm(struct sci_base_state_machine *sm,
+		 const struct sci_base_state *state_table, u32 initial_state)
+{
+	sci_state_transition_t handler;
+
+	sm->initial_state_id    = initial_state;
+	sm->previous_state_id   = initial_state;
+	sm->current_state_id    = initial_state;
+	sm->state_table         = state_table;
+
+	handler = sm->state_table[initial_state].enter_state;
+	if (handler)
+		handler(sm);
+}
+
+/* Call the state exit fn, update the current state, call the state entry fn */
+void sci_change_state(struct sci_base_state_machine *sm, u32 next_state)
+{
+	sci_state_transition_t handler;
+
+	handler = sm->state_table[sm->current_state_id].exit_state;
+	if (handler)
+		handler(sm);
+
+	sm->previous_state_id = sm->current_state_id;
+	sm->current_state_id = next_state;
+
+	handler = sm->state_table[sm->current_state_id].enter_state;
+	if (handler)
+		handler(sm);
+}
+
+static bool sci_controller_completion_queue_has_entries(struct isci_host *ihost)
+{
+	u32 get_value = ihost->completion_queue_get;
+	u32 get_index = get_value & SMU_COMPLETION_QUEUE_GET_POINTER_MASK;
+
+	if (NORMALIZE_GET_POINTER_CYCLE_BIT(get_value) ==
+	    COMPLETION_QUEUE_CYCLE_BIT(ihost->completion_queue[get_index]))
+		return true;
+
+	return false;
+}
+
+static bool sci_controller_isr(struct isci_host *ihost)
+{
+	if (sci_controller_completion_queue_has_entries(ihost)) {
+		return true;
+	} else {
+		/*
+		 * we have a spurious interrupt it could be that we have already
+		 * emptied the completion queue from a previous interrupt */
+		writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status);
+
+		/*
+		 * There is a race in the hardware that could cause us not to be notified
+		 * of an interrupt completion if we do not take this step.  We will mask
+		 * then unmask the interrupts so if there is another interrupt pending
+		 * the clearing of the interrupt source we get the next interrupt message. */
+		writel(0xFF000000, &ihost->smu_registers->interrupt_mask);
+		writel(0, &ihost->smu_registers->interrupt_mask);
+	}
+
+	return false;
+}
+
+irqreturn_t isci_msix_isr(int vec, void *data)
+{
+	struct isci_host *ihost = data;
+
+	if (sci_controller_isr(ihost))
+		tasklet_schedule(&ihost->completion_tasklet);
+
+	return IRQ_HANDLED;
+}
+
+static bool sci_controller_error_isr(struct isci_host *ihost)
+{
+	u32 interrupt_status;
+
+	interrupt_status =
+		readl(&ihost->smu_registers->interrupt_status);
+	interrupt_status &= (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND);
+
+	if (interrupt_status != 0) {
+		/*
+		 * There is an error interrupt pending so let it through and handle
+		 * in the callback */
+		return true;
+	}
+
+	/*
+	 * There is a race in the hardware that could cause us not to be notified
+	 * of an interrupt completion if we do not take this step.  We will mask
+	 * then unmask the error interrupts so if there was another interrupt
+	 * pending we will be notified.
+	 * Could we write the value of (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND)? */
+	writel(0xff, &ihost->smu_registers->interrupt_mask);
+	writel(0, &ihost->smu_registers->interrupt_mask);
+
+	return false;
+}
+
+static void sci_controller_task_completion(struct isci_host *ihost, u32 ent)
+{
+	u32 index = SCU_GET_COMPLETION_INDEX(ent);
+	struct isci_request *ireq = ihost->reqs[index];
+
+	/* Make sure that we really want to process this IO request */
+	if (test_bit(IREQ_ACTIVE, &ireq->flags) &&
+	    ireq->io_tag != SCI_CONTROLLER_INVALID_IO_TAG &&
+	    ISCI_TAG_SEQ(ireq->io_tag) == ihost->io_request_sequence[index])
+		/* Yep this is a valid io request pass it along to the
+		 * io request handler
+		 */
+		sci_io_request_tc_completion(ireq, ent);
+}
+
+static void sci_controller_sdma_completion(struct isci_host *ihost, u32 ent)
+{
+	u32 index;
+	struct isci_request *ireq;
+	struct isci_remote_device *idev;
+
+	index = SCU_GET_COMPLETION_INDEX(ent);
+
+	switch (scu_get_command_request_type(ent)) {
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC:
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC:
+		ireq = ihost->reqs[index];
+		dev_warn(&ihost->pdev->dev, "%s: %x for io request %p\n",
+			 __func__, ent, ireq);
+		/* @todo For a post TC operation we need to fail the IO
+		 * request
+		 */
+		break;
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC:
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC:
+	case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC:
+		idev = ihost->device_table[index];
+		dev_warn(&ihost->pdev->dev, "%s: %x for device %p\n",
+			 __func__, ent, idev);
+		/* @todo For a port RNC operation we need to fail the
+		 * device
+		 */
+		break;
+	default:
+		dev_warn(&ihost->pdev->dev, "%s: unknown completion type %x\n",
+			 __func__, ent);
+		break;
+	}
+}
+
+static void sci_controller_unsolicited_frame(struct isci_host *ihost, u32 ent)
+{
+	u32 index;
+	u32 frame_index;
+
+	struct scu_unsolicited_frame_header *frame_header;
+	struct isci_phy *iphy;
+	struct isci_remote_device *idev;
+
+	enum sci_status result = SCI_FAILURE;
+
+	frame_index = SCU_GET_FRAME_INDEX(ent);
+
+	frame_header = ihost->uf_control.buffers.array[frame_index].header;
+	ihost->uf_control.buffers.array[frame_index].state = UNSOLICITED_FRAME_IN_USE;
+
+	if (SCU_GET_FRAME_ERROR(ent)) {
+		/*
+		 * / @todo If the IAF frame or SIGNATURE FIS frame has an error will
+		 * /       this cause a problem? We expect the phy initialization will
+		 * /       fail if there is an error in the frame. */
+		sci_controller_release_frame(ihost, frame_index);
+		return;
+	}
+
+	if (frame_header->is_address_frame) {
+		index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
+		iphy = &ihost->phys[index];
+		result = sci_phy_frame_handler(iphy, frame_index);
+	} else {
+
+		index = SCU_GET_COMPLETION_INDEX(ent);
+
+		if (index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+			/*
+			 * This is a signature fis or a frame from a direct attached SATA
+			 * device that has not yet been created.  In either case forwared
+			 * the frame to the PE and let it take care of the frame data. */
+			index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
+			iphy = &ihost->phys[index];
+			result = sci_phy_frame_handler(iphy, frame_index);
+		} else {
+			if (index < ihost->remote_node_entries)
+				idev = ihost->device_table[index];
+			else
+				idev = NULL;
+
+			if (idev != NULL)
+				result = sci_remote_device_frame_handler(idev, frame_index);
+			else
+				sci_controller_release_frame(ihost, frame_index);
+		}
+	}
+
+	if (result != SCI_SUCCESS) {
+		/*
+		 * / @todo Is there any reason to report some additional error message
+		 * /       when we get this failure notifiction? */
+	}
+}
+
+static void sci_controller_event_completion(struct isci_host *ihost, u32 ent)
+{
+	struct isci_remote_device *idev;
+	struct isci_request *ireq;
+	struct isci_phy *iphy;
+	u32 index;
+
+	index = SCU_GET_COMPLETION_INDEX(ent);
+
+	switch (scu_get_event_type(ent)) {
+	case SCU_EVENT_TYPE_SMU_COMMAND_ERROR:
+		/* / @todo The driver did something wrong and we need to fix the condtion. */
+		dev_err(&ihost->pdev->dev,
+			"%s: SCIC Controller 0x%p received SMU command error "
+			"0x%x\n",
+			__func__,
+			ihost,
+			ent);
+		break;
+
+	case SCU_EVENT_TYPE_SMU_PCQ_ERROR:
+	case SCU_EVENT_TYPE_SMU_ERROR:
+	case SCU_EVENT_TYPE_FATAL_MEMORY_ERROR:
+		/*
+		 * / @todo This is a hardware failure and its likely that we want to
+		 * /       reset the controller. */
+		dev_err(&ihost->pdev->dev,
+			"%s: SCIC Controller 0x%p received fatal controller "
+			"event  0x%x\n",
+			__func__,
+			ihost,
+			ent);
+		break;
+
+	case SCU_EVENT_TYPE_TRANSPORT_ERROR:
+		ireq = ihost->reqs[index];
+		sci_io_request_event_handler(ireq, ent);
+		break;
+
+	case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT:
+		switch (scu_get_event_specifier(ent)) {
+		case SCU_EVENT_SPECIFIC_SMP_RESPONSE_NO_PE:
+		case SCU_EVENT_SPECIFIC_TASK_TIMEOUT:
+			ireq = ihost->reqs[index];
+			if (ireq != NULL)
+				sci_io_request_event_handler(ireq, ent);
+			else
+				dev_warn(&ihost->pdev->dev,
+					 "%s: SCIC Controller 0x%p received "
+					 "event 0x%x for io request object "
+					 "that doesnt exist.\n",
+					 __func__,
+					 ihost,
+					 ent);
+
+			break;
+
+		case SCU_EVENT_SPECIFIC_IT_NEXUS_TIMEOUT:
+			idev = ihost->device_table[index];
+			if (idev != NULL)
+				sci_remote_device_event_handler(idev, ent);
+			else
+				dev_warn(&ihost->pdev->dev,
+					 "%s: SCIC Controller 0x%p received "
+					 "event 0x%x for remote device object "
+					 "that doesnt exist.\n",
+					 __func__,
+					 ihost,
+					 ent);
+
+			break;
+		}
+		break;
+
+	case SCU_EVENT_TYPE_BROADCAST_CHANGE:
+	/*
+	 * direct the broadcast change event to the phy first and then let
+	 * the phy redirect the broadcast change to the port object */
+	case SCU_EVENT_TYPE_ERR_CNT_EVENT:
+	/*
+	 * direct error counter event to the phy object since that is where
+	 * we get the event notification.  This is a type 4 event. */
+	case SCU_EVENT_TYPE_OSSP_EVENT:
+		index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
+		iphy = &ihost->phys[index];
+		sci_phy_event_handler(iphy, ent);
+		break;
+
+	case SCU_EVENT_TYPE_RNC_SUSPEND_TX:
+	case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX:
+	case SCU_EVENT_TYPE_RNC_OPS_MISC:
+		if (index < ihost->remote_node_entries) {
+			idev = ihost->device_table[index];
+
+			if (idev != NULL)
+				sci_remote_device_event_handler(idev, ent);
+		} else
+			dev_err(&ihost->pdev->dev,
+				"%s: SCIC Controller 0x%p received event 0x%x "
+				"for remote device object 0x%0x that doesnt "
+				"exist.\n",
+				__func__,
+				ihost,
+				ent,
+				index);
+
+		break;
+
+	default:
+		dev_warn(&ihost->pdev->dev,
+			 "%s: SCIC Controller received unknown event code %x\n",
+			 __func__,
+			 ent);
+		break;
+	}
+}
+
+static void sci_controller_process_completions(struct isci_host *ihost)
+{
+	u32 completion_count = 0;
+	u32 ent;
+	u32 get_index;
+	u32 get_cycle;
+	u32 event_get;
+	u32 event_cycle;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: completion queue begining get:0x%08x\n",
+		__func__,
+		ihost->completion_queue_get);
+
+	/* Get the component parts of the completion queue */
+	get_index = NORMALIZE_GET_POINTER(ihost->completion_queue_get);
+	get_cycle = SMU_CQGR_CYCLE_BIT & ihost->completion_queue_get;
+
+	event_get = NORMALIZE_EVENT_POINTER(ihost->completion_queue_get);
+	event_cycle = SMU_CQGR_EVENT_CYCLE_BIT & ihost->completion_queue_get;
+
+	while (
+		NORMALIZE_GET_POINTER_CYCLE_BIT(get_cycle)
+		== COMPLETION_QUEUE_CYCLE_BIT(ihost->completion_queue[get_index])
+		) {
+		completion_count++;
+
+		ent = ihost->completion_queue[get_index];
+
+		/* increment the get pointer and check for rollover to toggle the cycle bit */
+		get_cycle ^= ((get_index+1) & SCU_MAX_COMPLETION_QUEUE_ENTRIES) <<
+			     (SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT - SCU_MAX_COMPLETION_QUEUE_SHIFT);
+		get_index = (get_index+1) & (SCU_MAX_COMPLETION_QUEUE_ENTRIES-1);
+
+		dev_dbg(&ihost->pdev->dev,
+			"%s: completion queue entry:0x%08x\n",
+			__func__,
+			ent);
+
+		switch (SCU_GET_COMPLETION_TYPE(ent)) {
+		case SCU_COMPLETION_TYPE_TASK:
+			sci_controller_task_completion(ihost, ent);
+			break;
+
+		case SCU_COMPLETION_TYPE_SDMA:
+			sci_controller_sdma_completion(ihost, ent);
+			break;
+
+		case SCU_COMPLETION_TYPE_UFI:
+			sci_controller_unsolicited_frame(ihost, ent);
+			break;
+
+		case SCU_COMPLETION_TYPE_EVENT:
+		case SCU_COMPLETION_TYPE_NOTIFY: {
+			event_cycle ^= ((event_get+1) & SCU_MAX_EVENTS) <<
+				       (SMU_COMPLETION_QUEUE_GET_EVENT_CYCLE_BIT_SHIFT - SCU_MAX_EVENTS_SHIFT);
+			event_get = (event_get+1) & (SCU_MAX_EVENTS-1);
+
+			sci_controller_event_completion(ihost, ent);
+			break;
+		}
+		default:
+			dev_warn(&ihost->pdev->dev,
+				 "%s: SCIC Controller received unknown "
+				 "completion type %x\n",
+				 __func__,
+				 ent);
+			break;
+		}
+	}
+
+	/* Update the get register if we completed one or more entries */
+	if (completion_count > 0) {
+		ihost->completion_queue_get =
+			SMU_CQGR_GEN_BIT(ENABLE) |
+			SMU_CQGR_GEN_BIT(EVENT_ENABLE) |
+			event_cycle |
+			SMU_CQGR_GEN_VAL(EVENT_POINTER, event_get) |
+			get_cycle |
+			SMU_CQGR_GEN_VAL(POINTER, get_index);
+
+		writel(ihost->completion_queue_get,
+		       &ihost->smu_registers->completion_queue_get);
+
+	}
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: completion queue ending get:0x%08x\n",
+		__func__,
+		ihost->completion_queue_get);
+
+}
+
+static void sci_controller_error_handler(struct isci_host *ihost)
+{
+	u32 interrupt_status;
+
+	interrupt_status =
+		readl(&ihost->smu_registers->interrupt_status);
+
+	if ((interrupt_status & SMU_ISR_QUEUE_SUSPEND) &&
+	    sci_controller_completion_queue_has_entries(ihost)) {
+
+		sci_controller_process_completions(ihost);
+		writel(SMU_ISR_QUEUE_SUSPEND, &ihost->smu_registers->interrupt_status);
+	} else {
+		dev_err(&ihost->pdev->dev, "%s: status: %#x\n", __func__,
+			interrupt_status);
+
+		sci_change_state(&ihost->sm, SCIC_FAILED);
+
+		return;
+	}
+
+	/* If we dont process any completions I am not sure that we want to do this.
+	 * We are in the middle of a hardware fault and should probably be reset.
+	 */
+	writel(0, &ihost->smu_registers->interrupt_mask);
+}
+
+irqreturn_t isci_intx_isr(int vec, void *data)
+{
+	irqreturn_t ret = IRQ_NONE;
+	struct isci_host *ihost = data;
+
+	if (sci_controller_isr(ihost)) {
+		writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status);
+		tasklet_schedule(&ihost->completion_tasklet);
+		ret = IRQ_HANDLED;
+	} else if (sci_controller_error_isr(ihost)) {
+		spin_lock(&ihost->scic_lock);
+		sci_controller_error_handler(ihost);
+		spin_unlock(&ihost->scic_lock);
+		ret = IRQ_HANDLED;
+	}
+
+	return ret;
+}
+
+irqreturn_t isci_error_isr(int vec, void *data)
+{
+	struct isci_host *ihost = data;
+
+	if (sci_controller_error_isr(ihost))
+		sci_controller_error_handler(ihost);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * isci_host_start_complete() - This function is called by the core library,
+ *    through the ISCI Module, to indicate controller start status.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @completion_status: This parameter specifies the completion status from the
+ *    core library.
+ *
+ */
+static void isci_host_start_complete(struct isci_host *ihost, enum sci_status completion_status)
+{
+	if (completion_status != SCI_SUCCESS)
+		dev_info(&ihost->pdev->dev,
+			"controller start timed out, continuing...\n");
+	isci_host_change_state(ihost, isci_ready);
+	clear_bit(IHOST_START_PENDING, &ihost->flags);
+	wake_up(&ihost->eventq);
+}
+
+int isci_host_scan_finished(struct Scsi_Host *shost, unsigned long time)
+{
+	struct isci_host *ihost = SHOST_TO_SAS_HA(shost)->lldd_ha;
+
+	if (test_bit(IHOST_START_PENDING, &ihost->flags))
+		return 0;
+
+	/* todo: use sas_flush_discovery once it is upstream */
+	scsi_flush_work(shost);
+
+	scsi_flush_work(shost);
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: ihost->status = %d, time = %ld\n",
+		 __func__, isci_host_get_state(ihost), time);
+
+	return 1;
+
+}
+
+/**
+ * sci_controller_get_suggested_start_timeout() - This method returns the
+ *    suggested sci_controller_start() timeout amount.  The user is free to
+ *    use any timeout value, but this method provides the suggested minimum
+ *    start timeout value.  The returned value is based upon empirical
+ *    information determined as a result of interoperability testing.
+ * @controller: the handle to the controller object for which to return the
+ *    suggested start timeout.
+ *
+ * This method returns the number of milliseconds for the suggested start
+ * operation timeout.
+ */
+static u32 sci_controller_get_suggested_start_timeout(struct isci_host *ihost)
+{
+	/* Validate the user supplied parameters. */
+	if (!ihost)
+		return 0;
+
+	/*
+	 * The suggested minimum timeout value for a controller start operation:
+	 *
+	 *     Signature FIS Timeout
+	 *   + Phy Start Timeout
+	 *   + Number of Phy Spin Up Intervals
+	 *   ---------------------------------
+	 *   Number of milliseconds for the controller start operation.
+	 *
+	 * NOTE: The number of phy spin up intervals will be equivalent
+	 *       to the number of phys divided by the number phys allowed
+	 *       per interval - 1 (once OEM parameters are supported).
+	 *       Currently we assume only 1 phy per interval. */
+
+	return SCIC_SDS_SIGNATURE_FIS_TIMEOUT
+		+ SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT
+		+ ((SCI_MAX_PHYS - 1) * SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+}
+
+static void sci_controller_enable_interrupts(struct isci_host *ihost)
+{
+	BUG_ON(ihost->smu_registers == NULL);
+	writel(0, &ihost->smu_registers->interrupt_mask);
+}
+
+void sci_controller_disable_interrupts(struct isci_host *ihost)
+{
+	BUG_ON(ihost->smu_registers == NULL);
+	writel(0xffffffff, &ihost->smu_registers->interrupt_mask);
+}
+
+static void sci_controller_enable_port_task_scheduler(struct isci_host *ihost)
+{
+	u32 port_task_scheduler_value;
+
+	port_task_scheduler_value =
+		readl(&ihost->scu_registers->peg0.ptsg.control);
+	port_task_scheduler_value |=
+		(SCU_PTSGCR_GEN_BIT(ETM_ENABLE) |
+		 SCU_PTSGCR_GEN_BIT(PTSG_ENABLE));
+	writel(port_task_scheduler_value,
+	       &ihost->scu_registers->peg0.ptsg.control);
+}
+
+static void sci_controller_assign_task_entries(struct isci_host *ihost)
+{
+	u32 task_assignment;
+
+	/*
+	 * Assign all the TCs to function 0
+	 * TODO: Do we actually need to read this register to write it back?
+	 */
+
+	task_assignment =
+		readl(&ihost->smu_registers->task_context_assignment[0]);
+
+	task_assignment |= (SMU_TCA_GEN_VAL(STARTING, 0)) |
+		(SMU_TCA_GEN_VAL(ENDING,  ihost->task_context_entries - 1)) |
+		(SMU_TCA_GEN_BIT(RANGE_CHECK_ENABLE));
+
+	writel(task_assignment,
+		&ihost->smu_registers->task_context_assignment[0]);
+
+}
+
+static void sci_controller_initialize_completion_queue(struct isci_host *ihost)
+{
+	u32 index;
+	u32 completion_queue_control_value;
+	u32 completion_queue_get_value;
+	u32 completion_queue_put_value;
+
+	ihost->completion_queue_get = 0;
+
+	completion_queue_control_value =
+		(SMU_CQC_QUEUE_LIMIT_SET(SCU_MAX_COMPLETION_QUEUE_ENTRIES - 1) |
+		 SMU_CQC_EVENT_LIMIT_SET(SCU_MAX_EVENTS - 1));
+
+	writel(completion_queue_control_value,
+	       &ihost->smu_registers->completion_queue_control);
+
+
+	/* Set the completion queue get pointer and enable the queue */
+	completion_queue_get_value = (
+		(SMU_CQGR_GEN_VAL(POINTER, 0))
+		| (SMU_CQGR_GEN_VAL(EVENT_POINTER, 0))
+		| (SMU_CQGR_GEN_BIT(ENABLE))
+		| (SMU_CQGR_GEN_BIT(EVENT_ENABLE))
+		);
+
+	writel(completion_queue_get_value,
+	       &ihost->smu_registers->completion_queue_get);
+
+	/* Set the completion queue put pointer */
+	completion_queue_put_value = (
+		(SMU_CQPR_GEN_VAL(POINTER, 0))
+		| (SMU_CQPR_GEN_VAL(EVENT_POINTER, 0))
+		);
+
+	writel(completion_queue_put_value,
+	       &ihost->smu_registers->completion_queue_put);
+
+	/* Initialize the cycle bit of the completion queue entries */
+	for (index = 0; index < SCU_MAX_COMPLETION_QUEUE_ENTRIES; index++) {
+		/*
+		 * If get.cycle_bit != completion_queue.cycle_bit
+		 * its not a valid completion queue entry
+		 * so at system start all entries are invalid */
+		ihost->completion_queue[index] = 0x80000000;
+	}
+}
+
+static void sci_controller_initialize_unsolicited_frame_queue(struct isci_host *ihost)
+{
+	u32 frame_queue_control_value;
+	u32 frame_queue_get_value;
+	u32 frame_queue_put_value;
+
+	/* Write the queue size */
+	frame_queue_control_value =
+		SCU_UFQC_GEN_VAL(QUEUE_SIZE, SCU_MAX_UNSOLICITED_FRAMES);
+
+	writel(frame_queue_control_value,
+	       &ihost->scu_registers->sdma.unsolicited_frame_queue_control);
+
+	/* Setup the get pointer for the unsolicited frame queue */
+	frame_queue_get_value = (
+		SCU_UFQGP_GEN_VAL(POINTER, 0)
+		|  SCU_UFQGP_GEN_BIT(ENABLE_BIT)
+		);
+
+	writel(frame_queue_get_value,
+	       &ihost->scu_registers->sdma.unsolicited_frame_get_pointer);
+	/* Setup the put pointer for the unsolicited frame queue */
+	frame_queue_put_value = SCU_UFQPP_GEN_VAL(POINTER, 0);
+	writel(frame_queue_put_value,
+	       &ihost->scu_registers->sdma.unsolicited_frame_put_pointer);
+}
+
+static void sci_controller_transition_to_ready(struct isci_host *ihost, enum sci_status status)
+{
+	if (ihost->sm.current_state_id == SCIC_STARTING) {
+		/*
+		 * We move into the ready state, because some of the phys/ports
+		 * may be up and operational.
+		 */
+		sci_change_state(&ihost->sm, SCIC_READY);
+
+		isci_host_start_complete(ihost, status);
+	}
+}
+
+static bool is_phy_starting(struct isci_phy *iphy)
+{
+	enum sci_phy_states state;
+
+	state = iphy->sm.current_state_id;
+	switch (state) {
+	case SCI_PHY_STARTING:
+	case SCI_PHY_SUB_INITIAL:
+	case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_IAF_UF:
+	case SCI_PHY_SUB_AWAIT_SAS_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_PHY_EN:
+	case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF:
+	case SCI_PHY_SUB_FINAL:
+		return true;
+	default:
+		return false;
+	}
+}
+
+/**
+ * sci_controller_start_next_phy - start phy
+ * @scic: controller
+ *
+ * If all the phys have been started, then attempt to transition the
+ * controller to the READY state and inform the user
+ * (sci_cb_controller_start_complete()).
+ */
+static enum sci_status sci_controller_start_next_phy(struct isci_host *ihost)
+{
+	struct sci_oem_params *oem = &ihost->oem_parameters;
+	struct isci_phy *iphy;
+	enum sci_status status;
+
+	status = SCI_SUCCESS;
+
+	if (ihost->phy_startup_timer_pending)
+		return status;
+
+	if (ihost->next_phy_to_start >= SCI_MAX_PHYS) {
+		bool is_controller_start_complete = true;
+		u32 state;
+		u8 index;
+
+		for (index = 0; index < SCI_MAX_PHYS; index++) {
+			iphy = &ihost->phys[index];
+			state = iphy->sm.current_state_id;
+
+			if (!phy_get_non_dummy_port(iphy))
+				continue;
+
+			/* The controller start operation is complete iff:
+			 * - all links have been given an opportunity to start
+			 * - have no indication of a connected device
+			 * - have an indication of a connected device and it has
+			 *   finished the link training process.
+			 */
+			if ((iphy->is_in_link_training == false && state == SCI_PHY_INITIAL) ||
+			    (iphy->is_in_link_training == false && state == SCI_PHY_STOPPED) ||
+			    (iphy->is_in_link_training == true && is_phy_starting(iphy))) {
+				is_controller_start_complete = false;
+				break;
+			}
+		}
+
+		/*
+		 * The controller has successfully finished the start process.
+		 * Inform the SCI Core user and transition to the READY state. */
+		if (is_controller_start_complete == true) {
+			sci_controller_transition_to_ready(ihost, SCI_SUCCESS);
+			sci_del_timer(&ihost->phy_timer);
+			ihost->phy_startup_timer_pending = false;
+		}
+	} else {
+		iphy = &ihost->phys[ihost->next_phy_to_start];
+
+		if (oem->controller.mode_type == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
+			if (phy_get_non_dummy_port(iphy) == NULL) {
+				ihost->next_phy_to_start++;
+
+				/* Caution recursion ahead be forwarned
+				 *
+				 * The PHY was never added to a PORT in MPC mode
+				 * so start the next phy in sequence This phy
+				 * will never go link up and will not draw power
+				 * the OEM parameters either configured the phy
+				 * incorrectly for the PORT or it was never
+				 * assigned to a PORT
+				 */
+				return sci_controller_start_next_phy(ihost);
+			}
+		}
+
+		status = sci_phy_start(iphy);
+
+		if (status == SCI_SUCCESS) {
+			sci_mod_timer(&ihost->phy_timer,
+				      SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT);
+			ihost->phy_startup_timer_pending = true;
+		} else {
+			dev_warn(&ihost->pdev->dev,
+				 "%s: Controller stop operation failed "
+				 "to stop phy %d because of status "
+				 "%d.\n",
+				 __func__,
+				 ihost->phys[ihost->next_phy_to_start].phy_index,
+				 status);
+		}
+
+		ihost->next_phy_to_start++;
+	}
+
+	return status;
+}
+
+static void phy_startup_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_host *ihost = container_of(tmr, typeof(*ihost), phy_timer);
+	unsigned long flags;
+	enum sci_status status;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	ihost->phy_startup_timer_pending = false;
+
+	do {
+		status = sci_controller_start_next_phy(ihost);
+	} while (status != SCI_SUCCESS);
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+static u16 isci_tci_active(struct isci_host *ihost)
+{
+	return CIRC_CNT(ihost->tci_head, ihost->tci_tail, SCI_MAX_IO_REQUESTS);
+}
+
+static enum sci_status sci_controller_start(struct isci_host *ihost,
+					     u32 timeout)
+{
+	enum sci_status result;
+	u16 index;
+
+	if (ihost->sm.current_state_id != SCIC_INITIALIZED) {
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller start operation requested in "
+			 "invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	/* Build the TCi free pool */
+	BUILD_BUG_ON(SCI_MAX_IO_REQUESTS > 1 << sizeof(ihost->tci_pool[0]) * 8);
+	ihost->tci_head = 0;
+	ihost->tci_tail = 0;
+	for (index = 0; index < ihost->task_context_entries; index++)
+		isci_tci_free(ihost, index);
+
+	/* Build the RNi free pool */
+	sci_remote_node_table_initialize(&ihost->available_remote_nodes,
+					 ihost->remote_node_entries);
+
+	/*
+	 * Before anything else lets make sure we will not be
+	 * interrupted by the hardware.
+	 */
+	sci_controller_disable_interrupts(ihost);
+
+	/* Enable the port task scheduler */
+	sci_controller_enable_port_task_scheduler(ihost);
+
+	/* Assign all the task entries to ihost physical function */
+	sci_controller_assign_task_entries(ihost);
+
+	/* Now initialize the completion queue */
+	sci_controller_initialize_completion_queue(ihost);
+
+	/* Initialize the unsolicited frame queue for use */
+	sci_controller_initialize_unsolicited_frame_queue(ihost);
+
+	/* Start all of the ports on this controller */
+	for (index = 0; index < ihost->logical_port_entries; index++) {
+		struct isci_port *iport = &ihost->ports[index];
+
+		result = sci_port_start(iport);
+		if (result)
+			return result;
+	}
+
+	sci_controller_start_next_phy(ihost);
+
+	sci_mod_timer(&ihost->timer, timeout);
+
+	sci_change_state(&ihost->sm, SCIC_STARTING);
+
+	return SCI_SUCCESS;
+}
+
+void isci_host_scan_start(struct Scsi_Host *shost)
+{
+	struct isci_host *ihost = SHOST_TO_SAS_HA(shost)->lldd_ha;
+	unsigned long tmo = sci_controller_get_suggested_start_timeout(ihost);
+
+	set_bit(IHOST_START_PENDING, &ihost->flags);
+
+	spin_lock_irq(&ihost->scic_lock);
+	sci_controller_start(ihost, tmo);
+	sci_controller_enable_interrupts(ihost);
+	spin_unlock_irq(&ihost->scic_lock);
+}
+
+static void isci_host_stop_complete(struct isci_host *ihost, enum sci_status completion_status)
+{
+	isci_host_change_state(ihost, isci_stopped);
+	sci_controller_disable_interrupts(ihost);
+	clear_bit(IHOST_STOP_PENDING, &ihost->flags);
+	wake_up(&ihost->eventq);
+}
+
+static void sci_controller_completion_handler(struct isci_host *ihost)
+{
+	/* Empty out the completion queue */
+	if (sci_controller_completion_queue_has_entries(ihost))
+		sci_controller_process_completions(ihost);
+
+	/* Clear the interrupt and enable all interrupts again */
+	writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status);
+	/* Could we write the value of SMU_ISR_COMPLETION? */
+	writel(0xFF000000, &ihost->smu_registers->interrupt_mask);
+	writel(0, &ihost->smu_registers->interrupt_mask);
+}
+
+/**
+ * isci_host_completion_routine() - This function is the delayed service
+ *    routine that calls the sci core library's completion handler. It's
+ *    scheduled as a tasklet from the interrupt service routine when interrupts
+ *    in use, or set as the timeout function in polled mode.
+ * @data: This parameter specifies the ISCI host object
+ *
+ */
+static void isci_host_completion_routine(unsigned long data)
+{
+	struct isci_host *ihost = (struct isci_host *)data;
+	struct list_head    completed_request_list;
+	struct list_head    errored_request_list;
+	struct list_head    *current_position;
+	struct list_head    *next_position;
+	struct isci_request *request;
+	struct isci_request *next_request;
+	struct sas_task     *task;
+
+	INIT_LIST_HEAD(&completed_request_list);
+	INIT_LIST_HEAD(&errored_request_list);
+
+	spin_lock_irq(&ihost->scic_lock);
+
+	sci_controller_completion_handler(ihost);
+
+	/* Take the lists of completed I/Os from the host. */
+
+	list_splice_init(&ihost->requests_to_complete,
+			 &completed_request_list);
+
+	/* Take the list of errored I/Os from the host. */
+	list_splice_init(&ihost->requests_to_errorback,
+			 &errored_request_list);
+
+	spin_unlock_irq(&ihost->scic_lock);
+
+	/* Process any completions in the lists. */
+	list_for_each_safe(current_position, next_position,
+			   &completed_request_list) {
+
+		request = list_entry(current_position, struct isci_request,
+				     completed_node);
+		task = isci_request_access_task(request);
+
+		/* Normal notification (task_done) */
+		dev_dbg(&ihost->pdev->dev,
+			"%s: Normal - request/task = %p/%p\n",
+			__func__,
+			request,
+			task);
+
+		/* Return the task to libsas */
+		if (task != NULL) {
+
+			task->lldd_task = NULL;
+			if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
+
+				/* If the task is already in the abort path,
+				* the task_done callback cannot be called.
+				*/
+				task->task_done(task);
+			}
+		}
+
+		spin_lock_irq(&ihost->scic_lock);
+		isci_free_tag(ihost, request->io_tag);
+		spin_unlock_irq(&ihost->scic_lock);
+	}
+	list_for_each_entry_safe(request, next_request, &errored_request_list,
+				 completed_node) {
+
+		task = isci_request_access_task(request);
+
+		/* Use sas_task_abort */
+		dev_warn(&ihost->pdev->dev,
+			 "%s: Error - request/task = %p/%p\n",
+			 __func__,
+			 request,
+			 task);
+
+		if (task != NULL) {
+
+			/* Put the task into the abort path if it's not there
+			 * already.
+			 */
+			if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED))
+				sas_task_abort(task);
+
+		} else {
+			/* This is a case where the request has completed with a
+			 * status such that it needed further target servicing,
+			 * but the sas_task reference has already been removed
+			 * from the request.  Since it was errored, it was not
+			 * being aborted, so there is nothing to do except free
+			 * it.
+			 */
+
+			spin_lock_irq(&ihost->scic_lock);
+			/* Remove the request from the remote device's list
+			* of pending requests.
+			*/
+			list_del_init(&request->dev_node);
+			isci_free_tag(ihost, request->io_tag);
+			spin_unlock_irq(&ihost->scic_lock);
+		}
+	}
+
+}
+
+/**
+ * sci_controller_stop() - This method will stop an individual controller
+ *    object.This method will invoke the associated user callback upon
+ *    completion.  The completion callback is called when the following
+ *    conditions are met: -# the method return status is SCI_SUCCESS. -# the
+ *    controller has been quiesced. This method will ensure that all IO
+ *    requests are quiesced, phys are stopped, and all additional operation by
+ *    the hardware is halted.
+ * @controller: the handle to the controller object to stop.
+ * @timeout: This parameter specifies the number of milliseconds in which the
+ *    stop operation should complete.
+ *
+ * The controller must be in the STARTED or STOPPED state. Indicate if the
+ * controller stop method succeeded or failed in some way. SCI_SUCCESS if the
+ * stop operation successfully began. SCI_WARNING_ALREADY_IN_STATE if the
+ * controller is already in the STOPPED state. SCI_FAILURE_INVALID_STATE if the
+ * controller is not either in the STARTED or STOPPED states.
+ */
+static enum sci_status sci_controller_stop(struct isci_host *ihost, u32 timeout)
+{
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller stop operation requested in "
+			 "invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_mod_timer(&ihost->timer, timeout);
+	sci_change_state(&ihost->sm, SCIC_STOPPING);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_controller_reset() - This method will reset the supplied core
+ *    controller regardless of the state of said controller.  This operation is
+ *    considered destructive.  In other words, all current operations are wiped
+ *    out.  No IO completions for outstanding devices occur.  Outstanding IO
+ *    requests are not aborted or completed at the actual remote device.
+ * @controller: the handle to the controller object to reset.
+ *
+ * Indicate if the controller reset method succeeded or failed in some way.
+ * SCI_SUCCESS if the reset operation successfully started. SCI_FATAL_ERROR if
+ * the controller reset operation is unable to complete.
+ */
+static enum sci_status sci_controller_reset(struct isci_host *ihost)
+{
+	switch (ihost->sm.current_state_id) {
+	case SCIC_RESET:
+	case SCIC_READY:
+	case SCIC_STOPPED:
+	case SCIC_FAILED:
+		/*
+		 * The reset operation is not a graceful cleanup, just
+		 * perform the state transition.
+		 */
+		sci_change_state(&ihost->sm, SCIC_RESETTING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller reset operation requested in "
+			 "invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+void isci_host_deinit(struct isci_host *ihost)
+{
+	int i;
+
+	isci_host_change_state(ihost, isci_stopping);
+	for (i = 0; i < SCI_MAX_PORTS; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+		struct isci_remote_device *idev, *d;
+
+		list_for_each_entry_safe(idev, d, &iport->remote_dev_list, node) {
+			if (test_bit(IDEV_ALLOCATED, &idev->flags))
+				isci_remote_device_stop(ihost, idev);
+		}
+	}
+
+	set_bit(IHOST_STOP_PENDING, &ihost->flags);
+
+	spin_lock_irq(&ihost->scic_lock);
+	sci_controller_stop(ihost, SCIC_CONTROLLER_STOP_TIMEOUT);
+	spin_unlock_irq(&ihost->scic_lock);
+
+	wait_for_stop(ihost);
+	sci_controller_reset(ihost);
+
+	/* Cancel any/all outstanding port timers */
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+		del_timer_sync(&iport->timer.timer);
+	}
+
+	/* Cancel any/all outstanding phy timers */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		struct isci_phy *iphy = &ihost->phys[i];
+		del_timer_sync(&iphy->sata_timer.timer);
+	}
+
+	del_timer_sync(&ihost->port_agent.timer.timer);
+
+	del_timer_sync(&ihost->power_control.timer.timer);
+
+	del_timer_sync(&ihost->timer.timer);
+
+	del_timer_sync(&ihost->phy_timer.timer);
+}
+
+static void __iomem *scu_base(struct isci_host *isci_host)
+{
+	struct pci_dev *pdev = isci_host->pdev;
+	int id = isci_host->id;
+
+	return pcim_iomap_table(pdev)[SCI_SCU_BAR * 2] + SCI_SCU_BAR_SIZE * id;
+}
+
+static void __iomem *smu_base(struct isci_host *isci_host)
+{
+	struct pci_dev *pdev = isci_host->pdev;
+	int id = isci_host->id;
+
+	return pcim_iomap_table(pdev)[SCI_SMU_BAR * 2] + SCI_SMU_BAR_SIZE * id;
+}
+
+static void isci_user_parameters_get(struct sci_user_parameters *u)
+{
+	int i;
+
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		struct sci_phy_user_params *u_phy = &u->phys[i];
+
+		u_phy->max_speed_generation = phy_gen;
+
+		/* we are not exporting these for now */
+		u_phy->align_insertion_frequency = 0x7f;
+		u_phy->in_connection_align_insertion_frequency = 0xff;
+		u_phy->notify_enable_spin_up_insertion_frequency = 0x33;
+	}
+
+	u->stp_inactivity_timeout = stp_inactive_to;
+	u->ssp_inactivity_timeout = ssp_inactive_to;
+	u->stp_max_occupancy_timeout = stp_max_occ_to;
+	u->ssp_max_occupancy_timeout = ssp_max_occ_to;
+	u->no_outbound_task_timeout = no_outbound_task_to;
+	u->max_number_concurrent_device_spin_up = max_concurr_spinup;
+}
+
+static void sci_controller_initial_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_change_state(&ihost->sm, SCIC_RESET);
+}
+
+static inline void sci_controller_starting_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_del_timer(&ihost->timer);
+}
+
+#define INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_LOWER_BOUND_NS 853
+#define INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_UPPER_BOUND_NS 1280
+#define INTERRUPT_COALESCE_TIMEOUT_MAX_US                    2700000
+#define INTERRUPT_COALESCE_NUMBER_MAX                        256
+#define INTERRUPT_COALESCE_TIMEOUT_ENCODE_MIN                7
+#define INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX                28
+
+/**
+ * sci_controller_set_interrupt_coalescence() - This method allows the user to
+ *    configure the interrupt coalescence.
+ * @controller: This parameter represents the handle to the controller object
+ *    for which its interrupt coalesce register is overridden.
+ * @coalesce_number: Used to control the number of entries in the Completion
+ *    Queue before an interrupt is generated. If the number of entries exceed
+ *    this number, an interrupt will be generated. The valid range of the input
+ *    is [0, 256]. A setting of 0 results in coalescing being disabled.
+ * @coalesce_timeout: Timeout value in microseconds. The valid range of the
+ *    input is [0, 2700000] . A setting of 0 is allowed and results in no
+ *    interrupt coalescing timeout.
+ *
+ * Indicate if the user successfully set the interrupt coalesce parameters.
+ * SCI_SUCCESS The user successfully updated the interrutp coalescence.
+ * SCI_FAILURE_INVALID_PARAMETER_VALUE The user input value is out of range.
+ */
+static enum sci_status
+sci_controller_set_interrupt_coalescence(struct isci_host *ihost,
+					 u32 coalesce_number,
+					 u32 coalesce_timeout)
+{
+	u8 timeout_encode = 0;
+	u32 min = 0;
+	u32 max = 0;
+
+	/* Check if the input parameters fall in the range. */
+	if (coalesce_number > INTERRUPT_COALESCE_NUMBER_MAX)
+		return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+	/*
+	 *  Defined encoding for interrupt coalescing timeout:
+	 *              Value   Min      Max     Units
+	 *              -----   ---      ---     -----
+	 *              0       -        -       Disabled
+	 *              1       13.3     20.0    ns
+	 *              2       26.7     40.0
+	 *              3       53.3     80.0
+	 *              4       106.7    160.0
+	 *              5       213.3    320.0
+	 *              6       426.7    640.0
+	 *              7       853.3    1280.0
+	 *              8       1.7      2.6     us
+	 *              9       3.4      5.1
+	 *              10      6.8      10.2
+	 *              11      13.7     20.5
+	 *              12      27.3     41.0
+	 *              13      54.6     81.9
+	 *              14      109.2    163.8
+	 *              15      218.5    327.7
+	 *              16      436.9    655.4
+	 *              17      873.8    1310.7
+	 *              18      1.7      2.6     ms
+	 *              19      3.5      5.2
+	 *              20      7.0      10.5
+	 *              21      14.0     21.0
+	 *              22      28.0     41.9
+	 *              23      55.9     83.9
+	 *              24      111.8    167.8
+	 *              25      223.7    335.5
+	 *              26      447.4    671.1
+	 *              27      894.8    1342.2
+	 *              28      1.8      2.7     s
+	 *              Others Undefined */
+
+	/*
+	 * Use the table above to decide the encode of interrupt coalescing timeout
+	 * value for register writing. */
+	if (coalesce_timeout == 0)
+		timeout_encode = 0;
+	else{
+		/* make the timeout value in unit of (10 ns). */
+		coalesce_timeout = coalesce_timeout * 100;
+		min = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_LOWER_BOUND_NS / 10;
+		max = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_UPPER_BOUND_NS / 10;
+
+		/* get the encode of timeout for register writing. */
+		for (timeout_encode = INTERRUPT_COALESCE_TIMEOUT_ENCODE_MIN;
+		      timeout_encode <= INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX;
+		      timeout_encode++) {
+			if (min <= coalesce_timeout &&  max > coalesce_timeout)
+				break;
+			else if (coalesce_timeout >= max && coalesce_timeout < min * 2
+				 && coalesce_timeout <= INTERRUPT_COALESCE_TIMEOUT_MAX_US * 100) {
+				if ((coalesce_timeout - max) < (2 * min - coalesce_timeout))
+					break;
+				else{
+					timeout_encode++;
+					break;
+				}
+			} else {
+				max = max * 2;
+				min = min * 2;
+			}
+		}
+
+		if (timeout_encode == INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX + 1)
+			/* the value is out of range. */
+			return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+	}
+
+	writel(SMU_ICC_GEN_VAL(NUMBER, coalesce_number) |
+	       SMU_ICC_GEN_VAL(TIMER, timeout_encode),
+	       &ihost->smu_registers->interrupt_coalesce_control);
+
+
+	ihost->interrupt_coalesce_number = (u16)coalesce_number;
+	ihost->interrupt_coalesce_timeout = coalesce_timeout / 100;
+
+	return SCI_SUCCESS;
+}
+
+
+static void sci_controller_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	/* set the default interrupt coalescence number and timeout value. */
+	sci_controller_set_interrupt_coalescence(ihost, 0x10, 250);
+}
+
+static void sci_controller_ready_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	/* disable interrupt coalescence. */
+	sci_controller_set_interrupt_coalescence(ihost, 0, 0);
+}
+
+static enum sci_status sci_controller_stop_phys(struct isci_host *ihost)
+{
+	u32 index;
+	enum sci_status status;
+	enum sci_status phy_status;
+
+	status = SCI_SUCCESS;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		phy_status = sci_phy_stop(&ihost->phys[index]);
+
+		if (phy_status != SCI_SUCCESS &&
+		    phy_status != SCI_FAILURE_INVALID_STATE) {
+			status = SCI_FAILURE;
+
+			dev_warn(&ihost->pdev->dev,
+				 "%s: Controller stop operation failed to stop "
+				 "phy %d because of status %d.\n",
+				 __func__,
+				 ihost->phys[index].phy_index, phy_status);
+		}
+	}
+
+	return status;
+}
+
+static enum sci_status sci_controller_stop_ports(struct isci_host *ihost)
+{
+	u32 index;
+	enum sci_status port_status;
+	enum sci_status status = SCI_SUCCESS;
+
+	for (index = 0; index < ihost->logical_port_entries; index++) {
+		struct isci_port *iport = &ihost->ports[index];
+
+		port_status = sci_port_stop(iport);
+
+		if ((port_status != SCI_SUCCESS) &&
+		    (port_status != SCI_FAILURE_INVALID_STATE)) {
+			status = SCI_FAILURE;
+
+			dev_warn(&ihost->pdev->dev,
+				 "%s: Controller stop operation failed to "
+				 "stop port %d because of status %d.\n",
+				 __func__,
+				 iport->logical_port_index,
+				 port_status);
+		}
+	}
+
+	return status;
+}
+
+static enum sci_status sci_controller_stop_devices(struct isci_host *ihost)
+{
+	u32 index;
+	enum sci_status status;
+	enum sci_status device_status;
+
+	status = SCI_SUCCESS;
+
+	for (index = 0; index < ihost->remote_node_entries; index++) {
+		if (ihost->device_table[index] != NULL) {
+			/* / @todo What timeout value do we want to provide to this request? */
+			device_status = sci_remote_device_stop(ihost->device_table[index], 0);
+
+			if ((device_status != SCI_SUCCESS) &&
+			    (device_status != SCI_FAILURE_INVALID_STATE)) {
+				dev_warn(&ihost->pdev->dev,
+					 "%s: Controller stop operation failed "
+					 "to stop device 0x%p because of "
+					 "status %d.\n",
+					 __func__,
+					 ihost->device_table[index], device_status);
+			}
+		}
+	}
+
+	return status;
+}
+
+static void sci_controller_stopping_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	/* Stop all of the components for this controller */
+	sci_controller_stop_phys(ihost);
+	sci_controller_stop_ports(ihost);
+	sci_controller_stop_devices(ihost);
+}
+
+static void sci_controller_stopping_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_del_timer(&ihost->timer);
+}
+
+static void sci_controller_reset_hardware(struct isci_host *ihost)
+{
+	/* Disable interrupts so we dont take any spurious interrupts */
+	sci_controller_disable_interrupts(ihost);
+
+	/* Reset the SCU */
+	writel(0xFFFFFFFF, &ihost->smu_registers->soft_reset_control);
+
+	/* Delay for 1ms to before clearing the CQP and UFQPR. */
+	udelay(1000);
+
+	/* The write to the CQGR clears the CQP */
+	writel(0x00000000, &ihost->smu_registers->completion_queue_get);
+
+	/* The write to the UFQGP clears the UFQPR */
+	writel(0, &ihost->scu_registers->sdma.unsolicited_frame_get_pointer);
+}
+
+static void sci_controller_resetting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_host *ihost = container_of(sm, typeof(*ihost), sm);
+
+	sci_controller_reset_hardware(ihost);
+	sci_change_state(&ihost->sm, SCIC_RESET);
+}
+
+static const struct sci_base_state sci_controller_state_table[] = {
+	[SCIC_INITIAL] = {
+		.enter_state = sci_controller_initial_state_enter,
+	},
+	[SCIC_RESET] = {},
+	[SCIC_INITIALIZING] = {},
+	[SCIC_INITIALIZED] = {},
+	[SCIC_STARTING] = {
+		.exit_state  = sci_controller_starting_state_exit,
+	},
+	[SCIC_READY] = {
+		.enter_state = sci_controller_ready_state_enter,
+		.exit_state  = sci_controller_ready_state_exit,
+	},
+	[SCIC_RESETTING] = {
+		.enter_state = sci_controller_resetting_state_enter,
+	},
+	[SCIC_STOPPING] = {
+		.enter_state = sci_controller_stopping_state_enter,
+		.exit_state = sci_controller_stopping_state_exit,
+	},
+	[SCIC_STOPPED] = {},
+	[SCIC_FAILED] = {}
+};
+
+static void sci_controller_set_default_config_parameters(struct isci_host *ihost)
+{
+	/* these defaults are overridden by the platform / firmware */
+	u16 index;
+
+	/* Default to APC mode. */
+	ihost->oem_parameters.controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+
+	/* Default to APC mode. */
+	ihost->oem_parameters.controller.max_concurrent_dev_spin_up = 1;
+
+	/* Default to no SSC operation. */
+	ihost->oem_parameters.controller.do_enable_ssc = false;
+
+	/* Initialize all of the port parameter information to narrow ports. */
+	for (index = 0; index < SCI_MAX_PORTS; index++) {
+		ihost->oem_parameters.ports[index].phy_mask = 0;
+	}
+
+	/* Initialize all of the phy parameter information. */
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		/* Default to 6G (i.e. Gen 3) for now. */
+		ihost->user_parameters.phys[index].max_speed_generation = 3;
+
+		/* the frequencies cannot be 0 */
+		ihost->user_parameters.phys[index].align_insertion_frequency = 0x7f;
+		ihost->user_parameters.phys[index].in_connection_align_insertion_frequency = 0xff;
+		ihost->user_parameters.phys[index].notify_enable_spin_up_insertion_frequency = 0x33;
+
+		/*
+		 * Previous Vitesse based expanders had a arbitration issue that
+		 * is worked around by having the upper 32-bits of SAS address
+		 * with a value greater then the Vitesse company identifier.
+		 * Hence, usage of 0x5FCFFFFF. */
+		ihost->oem_parameters.phys[index].sas_address.low = 0x1 + ihost->id;
+		ihost->oem_parameters.phys[index].sas_address.high = 0x5FCFFFFF;
+	}
+
+	ihost->user_parameters.stp_inactivity_timeout = 5;
+	ihost->user_parameters.ssp_inactivity_timeout = 5;
+	ihost->user_parameters.stp_max_occupancy_timeout = 5;
+	ihost->user_parameters.ssp_max_occupancy_timeout = 20;
+	ihost->user_parameters.no_outbound_task_timeout = 20;
+}
+
+static void controller_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_host *ihost = container_of(tmr, typeof(*ihost), timer);
+	struct sci_base_state_machine *sm = &ihost->sm;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	if (sm->current_state_id == SCIC_STARTING)
+		sci_controller_transition_to_ready(ihost, SCI_FAILURE_TIMEOUT);
+	else if (sm->current_state_id == SCIC_STOPPING) {
+		sci_change_state(sm, SCIC_FAILED);
+		isci_host_stop_complete(ihost, SCI_FAILURE_TIMEOUT);
+	} else	/* / @todo Now what do we want to do in this case? */
+		dev_err(&ihost->pdev->dev,
+			"%s: Controller timer fired when controller was not "
+			"in a state being timed.\n",
+			__func__);
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+static enum sci_status sci_controller_construct(struct isci_host *ihost,
+						void __iomem *scu_base,
+						void __iomem *smu_base)
+{
+	u8 i;
+
+	sci_init_sm(&ihost->sm, sci_controller_state_table, SCIC_INITIAL);
+
+	ihost->scu_registers = scu_base;
+	ihost->smu_registers = smu_base;
+
+	sci_port_configuration_agent_construct(&ihost->port_agent);
+
+	/* Construct the ports for this controller */
+	for (i = 0; i < SCI_MAX_PORTS; i++)
+		sci_port_construct(&ihost->ports[i], i, ihost);
+	sci_port_construct(&ihost->ports[i], SCIC_SDS_DUMMY_PORT, ihost);
+
+	/* Construct the phys for this controller */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		/* Add all the PHYs to the dummy port */
+		sci_phy_construct(&ihost->phys[i],
+				  &ihost->ports[SCI_MAX_PORTS], i);
+	}
+
+	ihost->invalid_phy_mask = 0;
+
+	sci_init_timer(&ihost->timer, controller_timeout);
+
+	/* Initialize the User and OEM parameters to default values. */
+	sci_controller_set_default_config_parameters(ihost);
+
+	return sci_controller_reset(ihost);
+}
+
+int sci_oem_parameters_validate(struct sci_oem_params *oem)
+{
+	int i;
+
+	for (i = 0; i < SCI_MAX_PORTS; i++)
+		if (oem->ports[i].phy_mask > SCIC_SDS_PARM_PHY_MASK_MAX)
+			return -EINVAL;
+
+	for (i = 0; i < SCI_MAX_PHYS; i++)
+		if (oem->phys[i].sas_address.high == 0 &&
+		    oem->phys[i].sas_address.low == 0)
+			return -EINVAL;
+
+	if (oem->controller.mode_type == SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE) {
+		for (i = 0; i < SCI_MAX_PHYS; i++)
+			if (oem->ports[i].phy_mask != 0)
+				return -EINVAL;
+	} else if (oem->controller.mode_type == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
+		u8 phy_mask = 0;
+
+		for (i = 0; i < SCI_MAX_PHYS; i++)
+			phy_mask |= oem->ports[i].phy_mask;
+
+		if (phy_mask == 0)
+			return -EINVAL;
+	} else
+		return -EINVAL;
+
+	if (oem->controller.max_concurrent_dev_spin_up > MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT)
+		return -EINVAL;
+
+	return 0;
+}
+
+static enum sci_status sci_oem_parameters_set(struct isci_host *ihost)
+{
+	u32 state = ihost->sm.current_state_id;
+
+	if (state == SCIC_RESET ||
+	    state == SCIC_INITIALIZING ||
+	    state == SCIC_INITIALIZED) {
+
+		if (sci_oem_parameters_validate(&ihost->oem_parameters))
+			return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INVALID_STATE;
+}
+
+static void power_control_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_host *ihost = container_of(tmr, typeof(*ihost), power_control.timer);
+	struct isci_phy *iphy;
+	unsigned long flags;
+	u8 i;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	ihost->power_control.phys_granted_power = 0;
+
+	if (ihost->power_control.phys_waiting == 0) {
+		ihost->power_control.timer_started = false;
+		goto done;
+	}
+
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+
+		if (ihost->power_control.phys_waiting == 0)
+			break;
+
+		iphy = ihost->power_control.requesters[i];
+		if (iphy == NULL)
+			continue;
+
+		if (ihost->power_control.phys_granted_power >=
+		    ihost->oem_parameters.controller.max_concurrent_dev_spin_up)
+			break;
+
+		ihost->power_control.requesters[i] = NULL;
+		ihost->power_control.phys_waiting--;
+		ihost->power_control.phys_granted_power++;
+		sci_phy_consume_power_handler(iphy);
+	}
+
+	/*
+	 * It doesn't matter if the power list is empty, we need to start the
+	 * timer in case another phy becomes ready.
+	 */
+	sci_mod_timer(tmr, SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+	ihost->power_control.timer_started = true;
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+void sci_controller_power_control_queue_insert(struct isci_host *ihost,
+					       struct isci_phy *iphy)
+{
+	BUG_ON(iphy == NULL);
+
+	if (ihost->power_control.phys_granted_power <
+	    ihost->oem_parameters.controller.max_concurrent_dev_spin_up) {
+		ihost->power_control.phys_granted_power++;
+		sci_phy_consume_power_handler(iphy);
+
+		/*
+		 * stop and start the power_control timer. When the timer fires, the
+		 * no_of_phys_granted_power will be set to 0
+		 */
+		if (ihost->power_control.timer_started)
+			sci_del_timer(&ihost->power_control.timer);
+
+		sci_mod_timer(&ihost->power_control.timer,
+				 SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+		ihost->power_control.timer_started = true;
+
+	} else {
+		/* Add the phy in the waiting list */
+		ihost->power_control.requesters[iphy->phy_index] = iphy;
+		ihost->power_control.phys_waiting++;
+	}
+}
+
+void sci_controller_power_control_queue_remove(struct isci_host *ihost,
+					       struct isci_phy *iphy)
+{
+	BUG_ON(iphy == NULL);
+
+	if (ihost->power_control.requesters[iphy->phy_index])
+		ihost->power_control.phys_waiting--;
+
+	ihost->power_control.requesters[iphy->phy_index] = NULL;
+}
+
+#define AFE_REGISTER_WRITE_DELAY 10
+
+/* Initialize the AFE for this phy index. We need to read the AFE setup from
+ * the OEM parameters
+ */
+static void sci_controller_afe_initialization(struct isci_host *ihost)
+{
+	const struct sci_oem_params *oem = &ihost->oem_parameters;
+	struct pci_dev *pdev = ihost->pdev;
+	u32 afe_status;
+	u32 phy_id;
+
+	/* Clear DFX Status registers */
+	writel(0x0081000f, &ihost->scu_registers->afe.afe_dfx_master_control0);
+	udelay(AFE_REGISTER_WRITE_DELAY);
+
+	if (is_b0(pdev)) {
+		/* PM Rx Equalization Save, PM SPhy Rx Acknowledgement
+		 * Timer, PM Stagger Timer */
+		writel(0x0007BFFF, &ihost->scu_registers->afe.afe_pmsn_master_control2);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	}
+
+	/* Configure bias currents to normal */
+	if (is_a2(pdev))
+		writel(0x00005A00, &ihost->scu_registers->afe.afe_bias_control);
+	else if (is_b0(pdev) || is_c0(pdev))
+		writel(0x00005F00, &ihost->scu_registers->afe.afe_bias_control);
+
+	udelay(AFE_REGISTER_WRITE_DELAY);
+
+	/* Enable PLL */
+	if (is_b0(pdev) || is_c0(pdev))
+		writel(0x80040A08, &ihost->scu_registers->afe.afe_pll_control0);
+	else
+		writel(0x80040908, &ihost->scu_registers->afe.afe_pll_control0);
+
+	udelay(AFE_REGISTER_WRITE_DELAY);
+
+	/* Wait for the PLL to lock */
+	do {
+		afe_status = readl(&ihost->scu_registers->afe.afe_common_block_status);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	} while ((afe_status & 0x00001000) == 0);
+
+	if (is_a2(pdev)) {
+		/* Shorten SAS SNW lock time (RxLock timer value from 76 us to 50 us) */
+		writel(0x7bcc96ad, &ihost->scu_registers->afe.afe_pmsn_master_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	}
+
+	for (phy_id = 0; phy_id < SCI_MAX_PHYS; phy_id++) {
+		const struct sci_phy_oem_params *oem_phy = &oem->phys[phy_id];
+
+		if (is_b0(pdev)) {
+			 /* Configure transmitter SSC parameters */
+			writel(0x00030000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		} else if (is_c0(pdev)) {
+			 /* Configure transmitter SSC parameters */
+			writel(0x0003000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_ssc_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/*
+			 * All defaults, except the Receive Word Alignament/Comma Detect
+			 * Enable....(0xe800) */
+			writel(0x00004500, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		} else {
+			/*
+			 * All defaults, except the Receive Word Alignament/Comma Detect
+			 * Enable....(0xe800) */
+			writel(0x00004512, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(0x0050100F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control1);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		}
+
+		/*
+		 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+		 * & increase TX int & ext bias 20%....(0xe85c) */
+		if (is_a2(pdev))
+			writel(0x000003F0, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+		else if (is_b0(pdev)) {
+			 /* Power down TX and RX (PWRDNTX and PWRDNRX) */
+			writel(0x000003D7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/*
+			 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+			 * & increase TX int & ext bias 20%....(0xe85c) */
+			writel(0x000003D4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+		} else {
+			writel(0x000001E7, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/*
+			 * Power up TX and RX out from power down (PWRDNTX and PWRDNRX)
+			 * & increase TX int & ext bias 20%....(0xe85c) */
+			writel(0x000001E4, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_channel_control);
+		}
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		if (is_a2(pdev)) {
+			/* Enable TX equalization (0xe824) */
+			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+		}
+
+		/*
+		 * RDPI=0x0(RX Power On), RXOOBDETPDNC=0x0, TPD=0x0(TX Power On),
+		 * RDD=0x0(RX Detect Enabled) ....(0xe800) */
+		writel(0x00004100, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_xcvr_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		/* Leave DFE/FFE on */
+		if (is_a2(pdev))
+			writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+		else if (is_b0(pdev)) {
+			writel(0x3F11103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+			/* Enable TX equalization (0xe824) */
+			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+		} else {
+			writel(0x0140DF0F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control1);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			writel(0x3F6F103F, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_rx_ssc_control0);
+			udelay(AFE_REGISTER_WRITE_DELAY);
+
+			/* Enable TX equalization (0xe824) */
+			writel(0x00040000, &ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_control);
+		}
+
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control0,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control0);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control1,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control1);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control2,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control2);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+
+		writel(oem_phy->afe_tx_amp_control3,
+			&ihost->scu_registers->afe.scu_afe_xcvr[phy_id].afe_tx_amp_control3);
+		udelay(AFE_REGISTER_WRITE_DELAY);
+	}
+
+	/* Transfer control to the PEs */
+	writel(0x00010f00, &ihost->scu_registers->afe.afe_dfx_master_control0);
+	udelay(AFE_REGISTER_WRITE_DELAY);
+}
+
+static void sci_controller_initialize_power_control(struct isci_host *ihost)
+{
+	sci_init_timer(&ihost->power_control.timer, power_control_timeout);
+
+	memset(ihost->power_control.requesters, 0,
+	       sizeof(ihost->power_control.requesters));
+
+	ihost->power_control.phys_waiting = 0;
+	ihost->power_control.phys_granted_power = 0;
+}
+
+static enum sci_status sci_controller_initialize(struct isci_host *ihost)
+{
+	struct sci_base_state_machine *sm = &ihost->sm;
+	enum sci_status result = SCI_FAILURE;
+	unsigned long i, state, val;
+
+	if (ihost->sm.current_state_id != SCIC_RESET) {
+		dev_warn(&ihost->pdev->dev,
+			 "SCIC Controller initialize operation requested "
+			 "in invalid state\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(sm, SCIC_INITIALIZING);
+
+	sci_init_timer(&ihost->phy_timer, phy_startup_timeout);
+
+	ihost->next_phy_to_start = 0;
+	ihost->phy_startup_timer_pending = false;
+
+	sci_controller_initialize_power_control(ihost);
+
+	/*
+	 * There is nothing to do here for B0 since we do not have to
+	 * program the AFE registers.
+	 * / @todo The AFE settings are supposed to be correct for the B0 but
+	 * /       presently they seem to be wrong. */
+	sci_controller_afe_initialization(ihost);
+
+
+	/* Take the hardware out of reset */
+	writel(0, &ihost->smu_registers->soft_reset_control);
+
+	/*
+	 * / @todo Provide meaningfull error code for hardware failure
+	 * result = SCI_FAILURE_CONTROLLER_HARDWARE; */
+	for (i = 100; i >= 1; i--) {
+		u32 status;
+
+		/* Loop until the hardware reports success */
+		udelay(SCU_CONTEXT_RAM_INIT_STALL_TIME);
+		status = readl(&ihost->smu_registers->control_status);
+
+		if ((status & SCU_RAM_INIT_COMPLETED) == SCU_RAM_INIT_COMPLETED)
+			break;
+	}
+	if (i == 0)
+		goto out;
+
+	/*
+	 * Determine what are the actaul device capacities that the
+	 * hardware will support */
+	val = readl(&ihost->smu_registers->device_context_capacity);
+
+	/* Record the smaller of the two capacity values */
+	ihost->logical_port_entries = min(smu_max_ports(val), SCI_MAX_PORTS);
+	ihost->task_context_entries = min(smu_max_task_contexts(val), SCI_MAX_IO_REQUESTS);
+	ihost->remote_node_entries = min(smu_max_rncs(val), SCI_MAX_REMOTE_DEVICES);
+
+	/*
+	 * Make all PEs that are unassigned match up with the
+	 * logical ports
+	 */
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct scu_port_task_scheduler_group_registers __iomem
+			*ptsg = &ihost->scu_registers->peg0.ptsg;
+
+		writel(i, &ptsg->protocol_engine[i]);
+	}
+
+	/* Initialize hardware PCI Relaxed ordering in DMA engines */
+	val = readl(&ihost->scu_registers->sdma.pdma_configuration);
+	val |= SCU_PDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
+	writel(val, &ihost->scu_registers->sdma.pdma_configuration);
+
+	val = readl(&ihost->scu_registers->sdma.cdma_configuration);
+	val |= SCU_CDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
+	writel(val, &ihost->scu_registers->sdma.cdma_configuration);
+
+	/*
+	 * Initialize the PHYs before the PORTs because the PHY registers
+	 * are accessed during the port initialization.
+	 */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		result = sci_phy_initialize(&ihost->phys[i],
+					    &ihost->scu_registers->peg0.pe[i].tl,
+					    &ihost->scu_registers->peg0.pe[i].ll);
+		if (result != SCI_SUCCESS)
+			goto out;
+	}
+
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+
+		iport->port_task_scheduler_registers = &ihost->scu_registers->peg0.ptsg.port[i];
+		iport->port_pe_configuration_register = &ihost->scu_registers->peg0.ptsg.protocol_engine[0];
+		iport->viit_registers = &ihost->scu_registers->peg0.viit[i];
+	}
+
+	result = sci_port_configuration_agent_initialize(ihost, &ihost->port_agent);
+
+ out:
+	/* Advance the controller state machine */
+	if (result == SCI_SUCCESS)
+		state = SCIC_INITIALIZED;
+	else
+		state = SCIC_FAILED;
+	sci_change_state(sm, state);
+
+	return result;
+}
+
+static enum sci_status sci_user_parameters_set(struct isci_host *ihost,
+					       struct sci_user_parameters *sci_parms)
+{
+	u32 state = ihost->sm.current_state_id;
+
+	if (state == SCIC_RESET ||
+	    state == SCIC_INITIALIZING ||
+	    state == SCIC_INITIALIZED) {
+		u16 index;
+
+		/*
+		 * Validate the user parameters.  If they are not legal, then
+		 * return a failure.
+		 */
+		for (index = 0; index < SCI_MAX_PHYS; index++) {
+			struct sci_phy_user_params *user_phy;
+
+			user_phy = &sci_parms->phys[index];
+
+			if (!((user_phy->max_speed_generation <=
+						SCIC_SDS_PARM_MAX_SPEED) &&
+			      (user_phy->max_speed_generation >
+						SCIC_SDS_PARM_NO_SPEED)))
+				return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+			if (user_phy->in_connection_align_insertion_frequency <
+					3)
+				return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+			if ((user_phy->in_connection_align_insertion_frequency <
+						3) ||
+			    (user_phy->align_insertion_frequency == 0) ||
+			    (user_phy->
+				notify_enable_spin_up_insertion_frequency ==
+						0))
+				return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+		}
+
+		if ((sci_parms->stp_inactivity_timeout == 0) ||
+		    (sci_parms->ssp_inactivity_timeout == 0) ||
+		    (sci_parms->stp_max_occupancy_timeout == 0) ||
+		    (sci_parms->ssp_max_occupancy_timeout == 0) ||
+		    (sci_parms->no_outbound_task_timeout == 0))
+			return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+
+		memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms));
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INVALID_STATE;
+}
+
+static int sci_controller_mem_init(struct isci_host *ihost)
+{
+	struct device *dev = &ihost->pdev->dev;
+	dma_addr_t dma;
+	size_t size;
+	int err;
+
+	size = SCU_MAX_COMPLETION_QUEUE_ENTRIES * sizeof(u32);
+	ihost->completion_queue = dmam_alloc_coherent(dev, size, &dma, GFP_KERNEL);
+	if (!ihost->completion_queue)
+		return -ENOMEM;
+
+	writel(lower_32_bits(dma), &ihost->smu_registers->completion_queue_lower);
+	writel(upper_32_bits(dma), &ihost->smu_registers->completion_queue_upper);
+
+	size = ihost->remote_node_entries * sizeof(union scu_remote_node_context);
+	ihost->remote_node_context_table = dmam_alloc_coherent(dev, size, &dma,
+							       GFP_KERNEL);
+	if (!ihost->remote_node_context_table)
+		return -ENOMEM;
+
+	writel(lower_32_bits(dma), &ihost->smu_registers->remote_node_context_lower);
+	writel(upper_32_bits(dma), &ihost->smu_registers->remote_node_context_upper);
+
+	size = ihost->task_context_entries * sizeof(struct scu_task_context),
+	ihost->task_context_table = dmam_alloc_coherent(dev, size, &dma, GFP_KERNEL);
+	if (!ihost->task_context_table)
+		return -ENOMEM;
+
+	ihost->task_context_dma = dma;
+	writel(lower_32_bits(dma), &ihost->smu_registers->host_task_table_lower);
+	writel(upper_32_bits(dma), &ihost->smu_registers->host_task_table_upper);
+
+	err = sci_unsolicited_frame_control_construct(ihost);
+	if (err)
+		return err;
+
+	/*
+	 * Inform the silicon as to the location of the UF headers and
+	 * address table.
+	 */
+	writel(lower_32_bits(ihost->uf_control.headers.physical_address),
+		&ihost->scu_registers->sdma.uf_header_base_address_lower);
+	writel(upper_32_bits(ihost->uf_control.headers.physical_address),
+		&ihost->scu_registers->sdma.uf_header_base_address_upper);
+
+	writel(lower_32_bits(ihost->uf_control.address_table.physical_address),
+		&ihost->scu_registers->sdma.uf_address_table_lower);
+	writel(upper_32_bits(ihost->uf_control.address_table.physical_address),
+		&ihost->scu_registers->sdma.uf_address_table_upper);
+
+	return 0;
+}
+
+int isci_host_init(struct isci_host *ihost)
+{
+	int err = 0, i;
+	enum sci_status status;
+	struct sci_user_parameters sci_user_params;
+	struct isci_pci_info *pci_info = to_pci_info(ihost->pdev);
+
+	spin_lock_init(&ihost->state_lock);
+	spin_lock_init(&ihost->scic_lock);
+	init_waitqueue_head(&ihost->eventq);
+
+	isci_host_change_state(ihost, isci_starting);
+
+	status = sci_controller_construct(ihost, scu_base(ihost),
+					  smu_base(ihost));
+
+	if (status != SCI_SUCCESS) {
+		dev_err(&ihost->pdev->dev,
+			"%s: sci_controller_construct failed - status = %x\n",
+			__func__,
+			status);
+		return -ENODEV;
+	}
+
+	ihost->sas_ha.dev = &ihost->pdev->dev;
+	ihost->sas_ha.lldd_ha = ihost;
+
+	/*
+	 * grab initial values stored in the controller object for OEM and USER
+	 * parameters
+	 */
+	isci_user_parameters_get(&sci_user_params);
+	status = sci_user_parameters_set(ihost, &sci_user_params);
+	if (status != SCI_SUCCESS) {
+		dev_warn(&ihost->pdev->dev,
+			 "%s: sci_user_parameters_set failed\n",
+			 __func__);
+		return -ENODEV;
+	}
+
+	/* grab any OEM parameters specified in orom */
+	if (pci_info->orom) {
+		status = isci_parse_oem_parameters(&ihost->oem_parameters,
+						   pci_info->orom,
+						   ihost->id);
+		if (status != SCI_SUCCESS) {
+			dev_warn(&ihost->pdev->dev,
+				 "parsing firmware oem parameters failed\n");
+			return -EINVAL;
+		}
+	}
+
+	status = sci_oem_parameters_set(ihost);
+	if (status != SCI_SUCCESS) {
+		dev_warn(&ihost->pdev->dev,
+				"%s: sci_oem_parameters_set failed\n",
+				__func__);
+		return -ENODEV;
+	}
+
+	tasklet_init(&ihost->completion_tasklet,
+		     isci_host_completion_routine, (unsigned long)ihost);
+
+	INIT_LIST_HEAD(&ihost->requests_to_complete);
+	INIT_LIST_HEAD(&ihost->requests_to_errorback);
+
+	spin_lock_irq(&ihost->scic_lock);
+	status = sci_controller_initialize(ihost);
+	spin_unlock_irq(&ihost->scic_lock);
+	if (status != SCI_SUCCESS) {
+		dev_warn(&ihost->pdev->dev,
+			 "%s: sci_controller_initialize failed -"
+			 " status = 0x%x\n",
+			 __func__, status);
+		return -ENODEV;
+	}
+
+	err = sci_controller_mem_init(ihost);
+	if (err)
+		return err;
+
+	for (i = 0; i < SCI_MAX_PORTS; i++)
+		isci_port_init(&ihost->ports[i], ihost, i);
+
+	for (i = 0; i < SCI_MAX_PHYS; i++)
+		isci_phy_init(&ihost->phys[i], ihost, i);
+
+	for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
+		struct isci_remote_device *idev = &ihost->devices[i];
+
+		INIT_LIST_HEAD(&idev->reqs_in_process);
+		INIT_LIST_HEAD(&idev->node);
+	}
+
+	for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) {
+		struct isci_request *ireq;
+		dma_addr_t dma;
+
+		ireq = dmam_alloc_coherent(&ihost->pdev->dev,
+					   sizeof(struct isci_request), &dma,
+					   GFP_KERNEL);
+		if (!ireq)
+			return -ENOMEM;
+
+		ireq->tc = &ihost->task_context_table[i];
+		ireq->owning_controller = ihost;
+		spin_lock_init(&ireq->state_lock);
+		ireq->request_daddr = dma;
+		ireq->isci_host = ihost;
+		ihost->reqs[i] = ireq;
+	}
+
+	return 0;
+}
+
+void sci_controller_link_up(struct isci_host *ihost, struct isci_port *iport,
+			    struct isci_phy *iphy)
+{
+	switch (ihost->sm.current_state_id) {
+	case SCIC_STARTING:
+		sci_del_timer(&ihost->phy_timer);
+		ihost->phy_startup_timer_pending = false;
+		ihost->port_agent.link_up_handler(ihost, &ihost->port_agent,
+						  iport, iphy);
+		sci_controller_start_next_phy(ihost);
+		break;
+	case SCIC_READY:
+		ihost->port_agent.link_up_handler(ihost, &ihost->port_agent,
+						  iport, iphy);
+		break;
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			"%s: SCIC Controller linkup event from phy %d in "
+			"unexpected state %d\n", __func__, iphy->phy_index,
+			ihost->sm.current_state_id);
+	}
+}
+
+void sci_controller_link_down(struct isci_host *ihost, struct isci_port *iport,
+			      struct isci_phy *iphy)
+{
+	switch (ihost->sm.current_state_id) {
+	case SCIC_STARTING:
+	case SCIC_READY:
+		ihost->port_agent.link_down_handler(ihost, &ihost->port_agent,
+						   iport, iphy);
+		break;
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			"%s: SCIC Controller linkdown event from phy %d in "
+			"unexpected state %d\n",
+			__func__,
+			iphy->phy_index,
+			ihost->sm.current_state_id);
+	}
+}
+
+static bool sci_controller_has_remote_devices_stopping(struct isci_host *ihost)
+{
+	u32 index;
+
+	for (index = 0; index < ihost->remote_node_entries; index++) {
+		if ((ihost->device_table[index] != NULL) &&
+		   (ihost->device_table[index]->sm.current_state_id == SCI_DEV_STOPPING))
+			return true;
+	}
+
+	return false;
+}
+
+void sci_controller_remote_device_stopped(struct isci_host *ihost,
+					  struct isci_remote_device *idev)
+{
+	if (ihost->sm.current_state_id != SCIC_STOPPING) {
+		dev_dbg(&ihost->pdev->dev,
+			"SCIC Controller 0x%p remote device stopped event "
+			"from device 0x%p in unexpected state %d\n",
+			ihost, idev,
+			ihost->sm.current_state_id);
+		return;
+	}
+
+	if (!sci_controller_has_remote_devices_stopping(ihost))
+		sci_change_state(&ihost->sm, SCIC_STOPPED);
+}
+
+void sci_controller_post_request(struct isci_host *ihost, u32 request)
+{
+	dev_dbg(&ihost->pdev->dev, "%s[%d]: %#x\n",
+		__func__, ihost->id, request);
+
+	writel(request, &ihost->smu_registers->post_context_port);
+}
+
+struct isci_request *sci_request_by_tag(struct isci_host *ihost, u16 io_tag)
+{
+	u16 task_index;
+	u16 task_sequence;
+
+	task_index = ISCI_TAG_TCI(io_tag);
+
+	if (task_index < ihost->task_context_entries) {
+		struct isci_request *ireq = ihost->reqs[task_index];
+
+		if (test_bit(IREQ_ACTIVE, &ireq->flags)) {
+			task_sequence = ISCI_TAG_SEQ(io_tag);
+
+			if (task_sequence == ihost->io_request_sequence[task_index])
+				return ireq;
+		}
+	}
+
+	return NULL;
+}
+
+/**
+ * This method allocates remote node index and the reserves the remote node
+ *    context space for use. This method can fail if there are no more remote
+ *    node index available.
+ * @scic: This is the controller object which contains the set of
+ *    free remote node ids
+ * @sci_dev: This is the device object which is requesting the a remote node
+ *    id
+ * @node_id: This is the remote node id that is assinged to the device if one
+ *    is available
+ *
+ * enum sci_status SCI_FAILURE_OUT_OF_RESOURCES if there are no available remote
+ * node index available.
+ */
+enum sci_status sci_controller_allocate_remote_node_context(struct isci_host *ihost,
+							    struct isci_remote_device *idev,
+							    u16 *node_id)
+{
+	u16 node_index;
+	u32 remote_node_count = sci_remote_device_node_count(idev);
+
+	node_index = sci_remote_node_table_allocate_remote_node(
+		&ihost->available_remote_nodes, remote_node_count
+		);
+
+	if (node_index != SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) {
+		ihost->device_table[node_index] = idev;
+
+		*node_id = node_index;
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE_INSUFFICIENT_RESOURCES;
+}
+
+void sci_controller_free_remote_node_context(struct isci_host *ihost,
+					     struct isci_remote_device *idev,
+					     u16 node_id)
+{
+	u32 remote_node_count = sci_remote_device_node_count(idev);
+
+	if (ihost->device_table[node_id] == idev) {
+		ihost->device_table[node_id] = NULL;
+
+		sci_remote_node_table_release_remote_node_index(
+			&ihost->available_remote_nodes, remote_node_count, node_id
+			);
+	}
+}
+
+void sci_controller_copy_sata_response(void *response_buffer,
+				       void *frame_header,
+				       void *frame_buffer)
+{
+	/* XXX type safety? */
+	memcpy(response_buffer, frame_header, sizeof(u32));
+
+	memcpy(response_buffer + sizeof(u32),
+	       frame_buffer,
+	       sizeof(struct dev_to_host_fis) - sizeof(u32));
+}
+
+void sci_controller_release_frame(struct isci_host *ihost, u32 frame_index)
+{
+	if (sci_unsolicited_frame_control_release_frame(&ihost->uf_control, frame_index))
+		writel(ihost->uf_control.get,
+			&ihost->scu_registers->sdma.unsolicited_frame_get_pointer);
+}
+
+void isci_tci_free(struct isci_host *ihost, u16 tci)
+{
+	u16 tail = ihost->tci_tail & (SCI_MAX_IO_REQUESTS-1);
+
+	ihost->tci_pool[tail] = tci;
+	ihost->tci_tail = tail + 1;
+}
+
+static u16 isci_tci_alloc(struct isci_host *ihost)
+{
+	u16 head = ihost->tci_head & (SCI_MAX_IO_REQUESTS-1);
+	u16 tci = ihost->tci_pool[head];
+
+	ihost->tci_head = head + 1;
+	return tci;
+}
+
+static u16 isci_tci_space(struct isci_host *ihost)
+{
+	return CIRC_SPACE(ihost->tci_head, ihost->tci_tail, SCI_MAX_IO_REQUESTS);
+}
+
+u16 isci_alloc_tag(struct isci_host *ihost)
+{
+	if (isci_tci_space(ihost)) {
+		u16 tci = isci_tci_alloc(ihost);
+		u8 seq = ihost->io_request_sequence[tci];
+
+		return ISCI_TAG(seq, tci);
+	}
+
+	return SCI_CONTROLLER_INVALID_IO_TAG;
+}
+
+enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag)
+{
+	u16 tci = ISCI_TAG_TCI(io_tag);
+	u16 seq = ISCI_TAG_SEQ(io_tag);
+
+	/* prevent tail from passing head */
+	if (isci_tci_active(ihost) == 0)
+		return SCI_FAILURE_INVALID_IO_TAG;
+
+	if (seq == ihost->io_request_sequence[tci]) {
+		ihost->io_request_sequence[tci] = (seq+1) & (SCI_MAX_SEQ-1);
+
+		isci_tci_free(ihost, tci);
+
+		return SCI_SUCCESS;
+	}
+	return SCI_FAILURE_INVALID_IO_TAG;
+}
+
+enum sci_status sci_controller_start_io(struct isci_host *ihost,
+					struct isci_remote_device *idev,
+					struct isci_request *ireq)
+{
+	enum sci_status status;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev, "invalid state to start I/O");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	status = sci_remote_device_start_io(ihost, idev, ireq);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	set_bit(IREQ_ACTIVE, &ireq->flags);
+	sci_controller_post_request(ihost, ireq->post_context);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_controller_terminate_request(struct isci_host *ihost,
+						 struct isci_remote_device *idev,
+						 struct isci_request *ireq)
+{
+	/* terminate an ongoing (i.e. started) core IO request.  This does not
+	 * abort the IO request at the target, but rather removes the IO
+	 * request from the host controller.
+	 */
+	enum sci_status status;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev,
+			 "invalid state to terminate request\n");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	status = sci_io_request_terminate(ireq);
+	if (status != SCI_SUCCESS)
+		return status;
+
+	/*
+	 * Utilize the original post context command and or in the POST_TC_ABORT
+	 * request sub-type.
+	 */
+	sci_controller_post_request(ihost,
+				    ireq->post_context | SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_controller_complete_io() - This method will perform core specific
+ *    completion operations for an IO request.  After this method is invoked,
+ *    the user should consider the IO request as invalid until it is properly
+ *    reused (i.e. re-constructed).
+ * @ihost: The handle to the controller object for which to complete the
+ *    IO request.
+ * @idev: The handle to the remote device object for which to complete
+ *    the IO request.
+ * @ireq: the handle to the io request object to complete.
+ */
+enum sci_status sci_controller_complete_io(struct isci_host *ihost,
+					   struct isci_remote_device *idev,
+					   struct isci_request *ireq)
+{
+	enum sci_status status;
+	u16 index;
+
+	switch (ihost->sm.current_state_id) {
+	case SCIC_STOPPING:
+		/* XXX: Implement this function */
+		return SCI_FAILURE;
+	case SCIC_READY:
+		status = sci_remote_device_complete_io(ihost, idev, ireq);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		index = ISCI_TAG_TCI(ireq->io_tag);
+		clear_bit(IREQ_ACTIVE, &ireq->flags);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(&ihost->pdev->dev, "invalid state to complete I/O");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+}
+
+enum sci_status sci_controller_continue_io(struct isci_request *ireq)
+{
+	struct isci_host *ihost = ireq->owning_controller;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev, "invalid state to continue I/O");
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	set_bit(IREQ_ACTIVE, &ireq->flags);
+	sci_controller_post_request(ihost, ireq->post_context);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_controller_start_task() - This method is called by the SCIC user to
+ *    send/start a framework task management request.
+ * @controller: the handle to the controller object for which to start the task
+ *    management request.
+ * @remote_device: the handle to the remote device object for which to start
+ *    the task management request.
+ * @task_request: the handle to the task request object to start.
+ */
+enum sci_task_status sci_controller_start_task(struct isci_host *ihost,
+					       struct isci_remote_device *idev,
+					       struct isci_request *ireq)
+{
+	enum sci_status status;
+
+	if (ihost->sm.current_state_id != SCIC_READY) {
+		dev_warn(&ihost->pdev->dev,
+			 "%s: SCIC Controller starting task from invalid "
+			 "state\n",
+			 __func__);
+		return SCI_TASK_FAILURE_INVALID_STATE;
+	}
+
+	status = sci_remote_device_start_task(ihost, idev, ireq);
+	switch (status) {
+	case SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS:
+		set_bit(IREQ_ACTIVE, &ireq->flags);
+
+		/*
+		 * We will let framework know this task request started successfully,
+		 * although core is still woring on starting the request (to post tc when
+		 * RNC is resumed.)
+		 */
+		return SCI_SUCCESS;
+	case SCI_SUCCESS:
+		set_bit(IREQ_ACTIVE, &ireq->flags);
+		sci_controller_post_request(ihost, ireq->post_context);
+		break;
+	default:
+		break;
+	}
+
+	return status;
+}

drivers/scsi/isci/host.h

@@ -0,0 +1,542 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _SCI_HOST_H_
+#define _SCI_HOST_H_
+
+#include "remote_device.h"
+#include "phy.h"
+#include "isci.h"
+#include "remote_node_table.h"
+#include "registers.h"
+#include "unsolicited_frame_control.h"
+#include "probe_roms.h"
+
+struct isci_request;
+struct scu_task_context;
+
+
+/**
+ * struct sci_power_control -
+ *
+ * This structure defines the fields for managing power control for direct
+ * attached disk devices.
+ */
+struct sci_power_control {
+	/**
+	 * This field is set when the power control timer is running and cleared when
+	 * it is not.
+	 */
+	bool timer_started;
+
+	/**
+	 * Timer to control when the directed attached disks can consume power.
+	 */
+	struct sci_timer timer;
+
+	/**
+	 * This field is used to keep track of how many phys are put into the
+	 * requesters field.
+	 */
+	u8 phys_waiting;
+
+	/**
+	 * This field is used to keep track of how many phys have been granted to consume power
+	 */
+	u8 phys_granted_power;
+
+	/**
+	 * This field is an array of phys that we are waiting on. The phys are direct
+	 * mapped into requesters via struct sci_phy.phy_index
+	 */
+	struct isci_phy *requesters[SCI_MAX_PHYS];
+
+};
+
+struct sci_port_configuration_agent;
+typedef void (*port_config_fn)(struct isci_host *,
+			       struct sci_port_configuration_agent *,
+			       struct isci_port *, struct isci_phy *);
+
+struct sci_port_configuration_agent {
+	u16 phy_configured_mask;
+	u16 phy_ready_mask;
+	struct {
+		u8 min_index;
+		u8 max_index;
+	} phy_valid_port_range[SCI_MAX_PHYS];
+	bool timer_pending;
+	port_config_fn link_up_handler;
+	port_config_fn link_down_handler;
+	struct sci_timer	timer;
+};
+
+/**
+ * isci_host - primary host/controller object
+ * @timer: timeout start/stop operations
+ * @device_table: rni (hw remote node index) to remote device lookup table
+ * @available_remote_nodes: rni allocator
+ * @power_control: manage device spin up
+ * @io_request_sequence: generation number for tci's (task contexts)
+ * @task_context_table: hw task context table
+ * @remote_node_context_table: hw remote node context table
+ * @completion_queue: hw-producer driver-consumer communication ring
+ * @completion_queue_get: tracks the driver 'head' of the ring to notify hw
+ * @logical_port_entries: min({driver|silicon}-supported-port-count)
+ * @remote_node_entries: min({driver|silicon}-supported-node-count)
+ * @task_context_entries: min({driver|silicon}-supported-task-count)
+ * @phy_timer: phy startup timer
+ * @invalid_phy_mask: if an invalid_link_up notification is reported a bit for
+ * 		      the phy index is set so further notifications are not
+ * 		      made.  Once the phy reports link up and is made part of a
+ * 		      port then this bit is cleared.
+
+ */
+struct isci_host {
+	struct sci_base_state_machine sm;
+	/* XXX can we time this externally */
+	struct sci_timer timer;
+	/* XXX drop reference module params directly */
+	struct sci_user_parameters user_parameters;
+	/* XXX no need to be a union */
+	struct sci_oem_params oem_parameters;
+	struct sci_port_configuration_agent port_agent;
+	struct isci_remote_device *device_table[SCI_MAX_REMOTE_DEVICES];
+	struct sci_remote_node_table available_remote_nodes;
+	struct sci_power_control power_control;
+	u8 io_request_sequence[SCI_MAX_IO_REQUESTS];
+	struct scu_task_context *task_context_table;
+	dma_addr_t task_context_dma;
+	union scu_remote_node_context *remote_node_context_table;
+	u32 *completion_queue;
+	u32 completion_queue_get;
+	u32 logical_port_entries;
+	u32 remote_node_entries;
+	u32 task_context_entries;
+	struct sci_unsolicited_frame_control uf_control;
+
+	/* phy startup */
+	struct sci_timer phy_timer;
+	/* XXX kill */
+	bool phy_startup_timer_pending;
+	u32 next_phy_to_start;
+	/* XXX convert to unsigned long and use bitops */
+	u8 invalid_phy_mask;
+
+	/* TODO attempt dynamic interrupt coalescing scheme */
+	u16 interrupt_coalesce_number;
+	u32 interrupt_coalesce_timeout;
+	struct smu_registers __iomem *smu_registers;
+	struct scu_registers __iomem *scu_registers;
+
+	u16 tci_head;
+	u16 tci_tail;
+	u16 tci_pool[SCI_MAX_IO_REQUESTS];
+
+	int id; /* unique within a given pci device */
+	struct isci_phy phys[SCI_MAX_PHYS];
+	struct isci_port ports[SCI_MAX_PORTS + 1]; /* includes dummy port */
+	struct sas_ha_struct sas_ha;
+
+	spinlock_t state_lock;
+	struct pci_dev *pdev;
+	enum isci_status status;
+	#define IHOST_START_PENDING 0
+	#define IHOST_STOP_PENDING 1
+	unsigned long flags;
+	wait_queue_head_t eventq;
+	struct Scsi_Host *shost;
+	struct tasklet_struct completion_tasklet;
+	struct list_head requests_to_complete;
+	struct list_head requests_to_errorback;
+	spinlock_t scic_lock;
+	struct isci_request *reqs[SCI_MAX_IO_REQUESTS];
+	struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES];
+};
+
+/**
+ * enum sci_controller_states - This enumeration depicts all the states
+ *    for the common controller state machine.
+ */
+enum sci_controller_states {
+	/**
+	 * Simply the initial state for the base controller state machine.
+	 */
+	SCIC_INITIAL = 0,
+
+	/**
+	 * This state indicates that the controller is reset.  The memory for
+	 * the controller is in it's initial state, but the controller requires
+	 * initialization.
+	 * This state is entered from the INITIAL state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCIC_RESET,
+
+	/**
+	 * This state is typically an action state that indicates the controller
+	 * is in the process of initialization.  In this state no new IO operations
+	 * are permitted.
+	 * This state is entered from the RESET state.
+	 */
+	SCIC_INITIALIZING,
+
+	/**
+	 * This state indicates that the controller has been successfully
+	 * initialized.  In this state no new IO operations are permitted.
+	 * This state is entered from the INITIALIZING state.
+	 */
+	SCIC_INITIALIZED,
+
+	/**
+	 * This state indicates the the controller is in the process of becoming
+	 * ready (i.e. starting).  In this state no new IO operations are permitted.
+	 * This state is entered from the INITIALIZED state.
+	 */
+	SCIC_STARTING,
+
+	/**
+	 * This state indicates the controller is now ready.  Thus, the user
+	 * is able to perform IO operations on the controller.
+	 * This state is entered from the STARTING state.
+	 */
+	SCIC_READY,
+
+	/**
+	 * This state is typically an action state that indicates the controller
+	 * is in the process of resetting.  Thus, the user is unable to perform
+	 * IO operations on the controller.  A reset is considered destructive in
+	 * most cases.
+	 * This state is entered from the READY state.
+	 * This state is entered from the FAILED state.
+	 * This state is entered from the STOPPED state.
+	 */
+	SCIC_RESETTING,
+
+	/**
+	 * This state indicates that the controller is in the process of stopping.
+	 * In this state no new IO operations are permitted, but existing IO
+	 * operations are allowed to complete.
+	 * This state is entered from the READY state.
+	 */
+	SCIC_STOPPING,
+
+	/**
+	 * This state indicates that the controller has successfully been stopped.
+	 * In this state no new IO operations are permitted.
+	 * This state is entered from the STOPPING state.
+	 */
+	SCIC_STOPPED,
+
+	/**
+	 * This state indicates that the controller could not successfully be
+	 * initialized.  In this state no new IO operations are permitted.
+	 * This state is entered from the INITIALIZING state.
+	 * This state is entered from the STARTING state.
+	 * This state is entered from the STOPPING state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCIC_FAILED,
+};
+
+/**
+ * struct isci_pci_info - This class represents the pci function containing the
+ *    controllers. Depending on PCI SKU, there could be up to 2 controllers in
+ *    the PCI function.
+ */
+#define SCI_MAX_MSIX_INT (SCI_NUM_MSI_X_INT*SCI_MAX_CONTROLLERS)
+
+struct isci_pci_info {
+	struct msix_entry msix_entries[SCI_MAX_MSIX_INT];
+	struct isci_host *hosts[SCI_MAX_CONTROLLERS];
+	struct isci_orom *orom;
+};
+
+static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev)
+{
+	return pci_get_drvdata(pdev);
+}
+
+#define for_each_isci_host(id, ihost, pdev) \
+	for (id = 0, ihost = to_pci_info(pdev)->hosts[id]; \
+	     id < ARRAY_SIZE(to_pci_info(pdev)->hosts) && ihost; \
+	     ihost = to_pci_info(pdev)->hosts[++id])
+
+static inline enum isci_status isci_host_get_state(struct isci_host *isci_host)
+{
+	return isci_host->status;
+}
+
+static inline void isci_host_change_state(struct isci_host *isci_host,
+					  enum isci_status status)
+{
+	unsigned long flags;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_host = %p, state = 0x%x",
+		__func__,
+		isci_host,
+		status);
+	spin_lock_irqsave(&isci_host->state_lock, flags);
+	isci_host->status = status;
+	spin_unlock_irqrestore(&isci_host->state_lock, flags);
+
+}
+
+static inline void wait_for_start(struct isci_host *ihost)
+{
+	wait_event(ihost->eventq, !test_bit(IHOST_START_PENDING, &ihost->flags));
+}
+
+static inline void wait_for_stop(struct isci_host *ihost)
+{
+	wait_event(ihost->eventq, !test_bit(IHOST_STOP_PENDING, &ihost->flags));
+}
+
+static inline void wait_for_device_start(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	wait_event(ihost->eventq, !test_bit(IDEV_START_PENDING, &idev->flags));
+}
+
+static inline void wait_for_device_stop(struct isci_host *ihost, struct isci_remote_device *idev)
+{
+	wait_event(ihost->eventq, !test_bit(IDEV_STOP_PENDING, &idev->flags));
+}
+
+static inline struct isci_host *dev_to_ihost(struct domain_device *dev)
+{
+	return dev->port->ha->lldd_ha;
+}
+
+/* we always use protocol engine group zero */
+#define ISCI_PEG 0
+
+/* see sci_controller_io_tag_allocate|free for how seq and tci are built */
+#define ISCI_TAG(seq, tci) (((u16) (seq)) << 12 | tci)
+
+/* these are returned by the hardware, so sanitize them */
+#define ISCI_TAG_SEQ(tag) (((tag) >> 12) & (SCI_MAX_SEQ-1))
+#define ISCI_TAG_TCI(tag) ((tag) & (SCI_MAX_IO_REQUESTS-1))
+
+/* expander attached sata devices require 3 rnc slots */
+static inline int sci_remote_device_node_count(struct isci_remote_device *idev)
+{
+	struct domain_device *dev = idev->domain_dev;
+
+	if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) &&
+	    !idev->is_direct_attached)
+		return SCU_STP_REMOTE_NODE_COUNT;
+	return SCU_SSP_REMOTE_NODE_COUNT;
+}
+
+/**
+ * sci_controller_clear_invalid_phy() -
+ *
+ * This macro will clear the bit in the invalid phy mask for this controller
+ * object.  This is used to control messages reported for invalid link up
+ * notifications.
+ */
+#define sci_controller_clear_invalid_phy(controller, phy) \
+	((controller)->invalid_phy_mask &= ~(1 << (phy)->phy_index))
+
+static inline struct device *sciphy_to_dev(struct isci_phy *iphy)
+{
+
+	if (!iphy || !iphy->isci_port || !iphy->isci_port->isci_host)
+		return NULL;
+
+	return &iphy->isci_port->isci_host->pdev->dev;
+}
+
+static inline struct device *sciport_to_dev(struct isci_port *iport)
+{
+
+	if (!iport || !iport->isci_host)
+		return NULL;
+
+	return &iport->isci_host->pdev->dev;
+}
+
+static inline struct device *scirdev_to_dev(struct isci_remote_device *idev)
+{
+	if (!idev || !idev->isci_port || !idev->isci_port->isci_host)
+		return NULL;
+
+	return &idev->isci_port->isci_host->pdev->dev;
+}
+
+static inline bool is_a2(struct pci_dev *pdev)
+{
+	if (pdev->revision < 4)
+		return true;
+	return false;
+}
+
+static inline bool is_b0(struct pci_dev *pdev)
+{
+	if (pdev->revision == 4)
+		return true;
+	return false;
+}
+
+static inline bool is_c0(struct pci_dev *pdev)
+{
+	if (pdev->revision >= 5)
+		return true;
+	return false;
+}
+
+void sci_controller_post_request(struct isci_host *ihost,
+				      u32 request);
+void sci_controller_release_frame(struct isci_host *ihost,
+				       u32 frame_index);
+void sci_controller_copy_sata_response(void *response_buffer,
+					    void *frame_header,
+					    void *frame_buffer);
+enum sci_status sci_controller_allocate_remote_node_context(struct isci_host *ihost,
+								 struct isci_remote_device *idev,
+								 u16 *node_id);
+void sci_controller_free_remote_node_context(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	u16 node_id);
+
+struct isci_request *sci_request_by_tag(struct isci_host *ihost,
+					     u16 io_tag);
+
+void sci_controller_power_control_queue_insert(
+	struct isci_host *ihost,
+	struct isci_phy *iphy);
+
+void sci_controller_power_control_queue_remove(
+	struct isci_host *ihost,
+	struct isci_phy *iphy);
+
+void sci_controller_link_up(
+	struct isci_host *ihost,
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+void sci_controller_link_down(
+	struct isci_host *ihost,
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+void sci_controller_remote_device_stopped(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev);
+
+void sci_controller_copy_task_context(
+	struct isci_host *ihost,
+	struct isci_request *ireq);
+
+void sci_controller_register_setup(struct isci_host *ihost);
+
+enum sci_status sci_controller_continue_io(struct isci_request *ireq);
+int isci_host_scan_finished(struct Scsi_Host *, unsigned long);
+void isci_host_scan_start(struct Scsi_Host *);
+u16 isci_alloc_tag(struct isci_host *ihost);
+enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag);
+void isci_tci_free(struct isci_host *ihost, u16 tci);
+
+int isci_host_init(struct isci_host *);
+
+void isci_host_init_controller_names(
+	struct isci_host *isci_host,
+	unsigned int controller_idx);
+
+void isci_host_deinit(
+	struct isci_host *);
+
+void isci_host_port_link_up(
+	struct isci_host *,
+	struct isci_port *,
+	struct isci_phy *);
+int isci_host_dev_found(struct domain_device *);
+
+void isci_host_remote_device_start_complete(
+	struct isci_host *,
+	struct isci_remote_device *,
+	enum sci_status);
+
+void sci_controller_disable_interrupts(
+	struct isci_host *ihost);
+
+enum sci_status sci_controller_start_io(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_task_status sci_controller_start_task(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_controller_terminate_request(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_controller_complete_io(
+	struct isci_host *ihost,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+void sci_port_configuration_agent_construct(
+	struct sci_port_configuration_agent *port_agent);
+
+enum sci_status sci_port_configuration_agent_initialize(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent);
+#endif

drivers/scsi/isci/init.c

@@ -0,0 +1,565 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/efi.h>
+#include <asm/string.h>
+#include "isci.h"
+#include "task.h"
+#include "probe_roms.h"
+
+static struct scsi_transport_template *isci_transport_template;
+
+static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = {
+	{ PCI_VDEVICE(INTEL, 0x1D61),},
+	{ PCI_VDEVICE(INTEL, 0x1D63),},
+	{ PCI_VDEVICE(INTEL, 0x1D65),},
+	{ PCI_VDEVICE(INTEL, 0x1D67),},
+	{ PCI_VDEVICE(INTEL, 0x1D69),},
+	{ PCI_VDEVICE(INTEL, 0x1D6B),},
+	{ PCI_VDEVICE(INTEL, 0x1D60),},
+	{ PCI_VDEVICE(INTEL, 0x1D62),},
+	{ PCI_VDEVICE(INTEL, 0x1D64),},
+	{ PCI_VDEVICE(INTEL, 0x1D66),},
+	{ PCI_VDEVICE(INTEL, 0x1D68),},
+	{ PCI_VDEVICE(INTEL, 0x1D6A),},
+	{}
+};
+
+MODULE_DEVICE_TABLE(pci, isci_id_table);
+
+/* linux isci specific settings */
+
+unsigned char no_outbound_task_to = 20;
+module_param(no_outbound_task_to, byte, 0);
+MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)");
+
+u16 ssp_max_occ_to = 20;
+module_param(ssp_max_occ_to, ushort, 0);
+MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)");
+
+u16 stp_max_occ_to = 5;
+module_param(stp_max_occ_to, ushort, 0);
+MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)");
+
+u16 ssp_inactive_to = 5;
+module_param(ssp_inactive_to, ushort, 0);
+MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)");
+
+u16 stp_inactive_to = 5;
+module_param(stp_inactive_to, ushort, 0);
+MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)");
+
+unsigned char phy_gen = 3;
+module_param(phy_gen, byte, 0);
+MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)");
+
+unsigned char max_concurr_spinup = 1;
+module_param(max_concurr_spinup, byte, 0);
+MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup");
+
+static struct scsi_host_template isci_sht = {
+
+	.module				= THIS_MODULE,
+	.name				= DRV_NAME,
+	.proc_name			= DRV_NAME,
+	.queuecommand			= sas_queuecommand,
+	.target_alloc			= sas_target_alloc,
+	.slave_configure		= sas_slave_configure,
+	.slave_destroy			= sas_slave_destroy,
+	.scan_finished			= isci_host_scan_finished,
+	.scan_start			= isci_host_scan_start,
+	.change_queue_depth		= sas_change_queue_depth,
+	.change_queue_type		= sas_change_queue_type,
+	.bios_param			= sas_bios_param,
+	.can_queue			= ISCI_CAN_QUEUE_VAL,
+	.cmd_per_lun			= 1,
+	.this_id			= -1,
+	.sg_tablesize			= SG_ALL,
+	.max_sectors			= SCSI_DEFAULT_MAX_SECTORS,
+	.use_clustering			= ENABLE_CLUSTERING,
+	.eh_device_reset_handler	= sas_eh_device_reset_handler,
+	.eh_bus_reset_handler		= isci_bus_reset_handler,
+	.slave_alloc			= sas_slave_alloc,
+	.target_destroy			= sas_target_destroy,
+	.ioctl				= sas_ioctl,
+};
+
+static struct sas_domain_function_template isci_transport_ops  = {
+
+	/* The class calls these to notify the LLDD of an event. */
+	.lldd_port_formed	= isci_port_formed,
+	.lldd_port_deformed	= isci_port_deformed,
+
+	/* The class calls these when a device is found or gone. */
+	.lldd_dev_found		= isci_remote_device_found,
+	.lldd_dev_gone		= isci_remote_device_gone,
+
+	.lldd_execute_task	= isci_task_execute_task,
+	/* Task Management Functions. Must be called from process context. */
+	.lldd_abort_task	= isci_task_abort_task,
+	.lldd_abort_task_set	= isci_task_abort_task_set,
+	.lldd_clear_aca		= isci_task_clear_aca,
+	.lldd_clear_task_set	= isci_task_clear_task_set,
+	.lldd_I_T_nexus_reset	= isci_task_I_T_nexus_reset,
+	.lldd_lu_reset		= isci_task_lu_reset,
+	.lldd_query_task	= isci_task_query_task,
+
+	/* Port and Adapter management */
+	.lldd_clear_nexus_port	= isci_task_clear_nexus_port,
+	.lldd_clear_nexus_ha	= isci_task_clear_nexus_ha,
+
+	/* Phy management */
+	.lldd_control_phy	= isci_phy_control,
+};
+
+
+/******************************************************************************
+* P R O T E C T E D  M E T H O D S
+******************************************************************************/
+
+
+
+/**
+ * isci_register_sas_ha() - This method initializes various lldd
+ *    specific members of the sas_ha struct and calls the libsas
+ *    sas_register_ha() function.
+ * @isci_host: This parameter specifies the lldd specific wrapper for the
+ *    libsas sas_ha struct.
+ *
+ * This method returns an error code indicating sucess or failure. The user
+ * should check for possible memory allocation error return otherwise, a zero
+ * indicates success.
+ */
+static int isci_register_sas_ha(struct isci_host *isci_host)
+{
+	int i;
+	struct sas_ha_struct *sas_ha = &(isci_host->sas_ha);
+	struct asd_sas_phy **sas_phys;
+	struct asd_sas_port **sas_ports;
+
+	sas_phys = devm_kzalloc(&isci_host->pdev->dev,
+				SCI_MAX_PHYS * sizeof(void *),
+				GFP_KERNEL);
+	if (!sas_phys)
+		return -ENOMEM;
+
+	sas_ports = devm_kzalloc(&isci_host->pdev->dev,
+				 SCI_MAX_PORTS * sizeof(void *),
+				 GFP_KERNEL);
+	if (!sas_ports)
+		return -ENOMEM;
+
+	/*----------------- Libsas Initialization Stuff----------------------
+	 * Set various fields in the sas_ha struct:
+	 */
+
+	sas_ha->sas_ha_name = DRV_NAME;
+	sas_ha->lldd_module = THIS_MODULE;
+	sas_ha->sas_addr    = &isci_host->phys[0].sas_addr[0];
+
+	/* set the array of phy and port structs.  */
+	for (i = 0; i < SCI_MAX_PHYS; i++) {
+		sas_phys[i] = &isci_host->phys[i].sas_phy;
+		sas_ports[i] = &isci_host->ports[i].sas_port;
+	}
+
+	sas_ha->sas_phy  = sas_phys;
+	sas_ha->sas_port = sas_ports;
+	sas_ha->num_phys = SCI_MAX_PHYS;
+
+	sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL;
+	sas_ha->lldd_max_execute_num = 1;
+	sas_ha->strict_wide_ports = 1;
+
+	sas_register_ha(sas_ha);
+
+	return 0;
+}
+
+static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev);
+	struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
+	struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id);
+}
+
+static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL);
+
+static void isci_unregister(struct isci_host *isci_host)
+{
+	struct Scsi_Host *shost;
+
+	if (!isci_host)
+		return;
+
+	shost = isci_host->shost;
+	device_remove_file(&shost->shost_dev, &dev_attr_isci_id);
+
+	sas_unregister_ha(&isci_host->sas_ha);
+
+	sas_remove_host(isci_host->shost);
+	scsi_remove_host(isci_host->shost);
+	scsi_host_put(isci_host->shost);
+}
+
+static int __devinit isci_pci_init(struct pci_dev *pdev)
+{
+	int err, bar_num, bar_mask = 0;
+	void __iomem * const *iomap;
+
+	err = pcim_enable_device(pdev);
+	if (err) {
+		dev_err(&pdev->dev,
+			"failed enable PCI device %s!\n",
+			pci_name(pdev));
+		return err;
+	}
+
+	for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++)
+		bar_mask |= 1 << (bar_num * 2);
+
+	err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME);
+	if (err)
+		return err;
+
+	iomap = pcim_iomap_table(pdev);
+	if (!iomap)
+		return -ENOMEM;
+
+	pci_set_master(pdev);
+
+	err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (err) {
+		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err)
+			return err;
+	}
+
+	err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (err) {
+		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int num_controllers(struct pci_dev *pdev)
+{
+	/* bar size alone can tell us if we are running with a dual controller
+	 * part, no need to trust revision ids that might be under broken firmware
+	 * control
+	 */
+	resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2);
+	resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2);
+
+	if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS &&
+	    smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS)
+		return SCI_MAX_CONTROLLERS;
+	else
+		return 1;
+}
+
+static int isci_setup_interrupts(struct pci_dev *pdev)
+{
+	int err, i, num_msix;
+	struct isci_host *ihost;
+	struct isci_pci_info *pci_info = to_pci_info(pdev);
+
+	/*
+	 *  Determine the number of vectors associated with this
+	 *  PCI function.
+	 */
+	num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT;
+
+	for (i = 0; i < num_msix; i++)
+		pci_info->msix_entries[i].entry = i;
+
+	err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix);
+	if (err)
+		goto intx;
+
+	for (i = 0; i < num_msix; i++) {
+		int id = i / SCI_NUM_MSI_X_INT;
+		struct msix_entry *msix = &pci_info->msix_entries[i];
+		irq_handler_t isr;
+
+		ihost = pci_info->hosts[id];
+		/* odd numbered vectors are error interrupts */
+		if (i & 1)
+			isr = isci_error_isr;
+		else
+			isr = isci_msix_isr;
+
+		err = devm_request_irq(&pdev->dev, msix->vector, isr, 0,
+				       DRV_NAME"-msix", ihost);
+		if (!err)
+			continue;
+
+		dev_info(&pdev->dev, "msix setup failed falling back to intx\n");
+		while (i--) {
+			id = i / SCI_NUM_MSI_X_INT;
+			ihost = pci_info->hosts[id];
+			msix = &pci_info->msix_entries[i];
+			devm_free_irq(&pdev->dev, msix->vector, ihost);
+		}
+		pci_disable_msix(pdev);
+		goto intx;
+	}
+	return 0;
+
+ intx:
+	for_each_isci_host(i, ihost, pdev) {
+		err = devm_request_irq(&pdev->dev, pdev->irq, isci_intx_isr,
+				       IRQF_SHARED, DRV_NAME"-intx", ihost);
+		if (err)
+			break;
+	}
+	return err;
+}
+
+static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
+{
+	struct isci_host *isci_host;
+	struct Scsi_Host *shost;
+	int err;
+
+	isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL);
+	if (!isci_host)
+		return NULL;
+
+	isci_host->pdev = pdev;
+	isci_host->id = id;
+
+	shost = scsi_host_alloc(&isci_sht, sizeof(void *));
+	if (!shost)
+		return NULL;
+	isci_host->shost = shost;
+
+	err = isci_host_init(isci_host);
+	if (err)
+		goto err_shost;
+
+	SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha;
+	isci_host->sas_ha.core.shost = shost;
+	shost->transportt = isci_transport_template;
+
+	shost->max_id = ~0;
+	shost->max_lun = ~0;
+	shost->max_cmd_len = MAX_COMMAND_SIZE;
+
+	err = scsi_add_host(shost, &pdev->dev);
+	if (err)
+		goto err_shost;
+
+	err = isci_register_sas_ha(isci_host);
+	if (err)
+		goto err_shost_remove;
+
+	err = device_create_file(&shost->shost_dev, &dev_attr_isci_id);
+	if (err)
+		goto err_unregister_ha;
+
+	return isci_host;
+
+ err_unregister_ha:
+	sas_unregister_ha(&(isci_host->sas_ha));
+ err_shost_remove:
+	scsi_remove_host(shost);
+ err_shost:
+	scsi_host_put(shost);
+
+	return NULL;
+}
+
+static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct isci_pci_info *pci_info;
+	int err, i;
+	struct isci_host *isci_host;
+	const struct firmware *fw = NULL;
+	struct isci_orom *orom = NULL;
+	char *source = "(platform)";
+
+	dev_info(&pdev->dev, "driver configured for rev: %d silicon\n",
+		 pdev->revision);
+
+	pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL);
+	if (!pci_info)
+		return -ENOMEM;
+	pci_set_drvdata(pdev, pci_info);
+
+	if (efi_enabled)
+		orom = isci_get_efi_var(pdev);
+
+	if (!orom)
+		orom = isci_request_oprom(pdev);
+
+	for (i = 0; orom && i < ARRAY_SIZE(orom->ctrl); i++) {
+		if (sci_oem_parameters_validate(&orom->ctrl[i])) {
+			dev_warn(&pdev->dev,
+				 "[%d]: invalid oem parameters detected, falling back to firmware\n", i);
+			devm_kfree(&pdev->dev, orom);
+			orom = NULL;
+			break;
+		}
+	}
+
+	if (!orom) {
+		source = "(firmware)";
+		orom = isci_request_firmware(pdev, fw);
+		if (!orom) {
+			/* TODO convert this to WARN_TAINT_ONCE once the
+			 * orom/efi parameter support is widely available
+			 */
+			dev_warn(&pdev->dev,
+				 "Loading user firmware failed, using default "
+				 "values\n");
+			dev_warn(&pdev->dev,
+				 "Default OEM configuration being used: 4 "
+				 "narrow ports, and default SAS Addresses\n");
+		}
+	}
+
+	if (orom)
+		dev_info(&pdev->dev,
+			 "OEM SAS parameters (version: %u.%u) loaded %s\n",
+			 (orom->hdr.version & 0xf0) >> 4,
+			 (orom->hdr.version & 0xf), source);
+
+	pci_info->orom = orom;
+
+	err = isci_pci_init(pdev);
+	if (err)
+		return err;
+
+	for (i = 0; i < num_controllers(pdev); i++) {
+		struct isci_host *h = isci_host_alloc(pdev, i);
+
+		if (!h) {
+			err = -ENOMEM;
+			goto err_host_alloc;
+		}
+		pci_info->hosts[i] = h;
+	}
+
+	err = isci_setup_interrupts(pdev);
+	if (err)
+		goto err_host_alloc;
+
+	for_each_isci_host(i, isci_host, pdev)
+		scsi_scan_host(isci_host->shost);
+
+	return 0;
+
+ err_host_alloc:
+	for_each_isci_host(i, isci_host, pdev)
+		isci_unregister(isci_host);
+	return err;
+}
+
+static void __devexit isci_pci_remove(struct pci_dev *pdev)
+{
+	struct isci_host *ihost;
+	int i;
+
+	for_each_isci_host(i, ihost, pdev) {
+		isci_unregister(ihost);
+		isci_host_deinit(ihost);
+		sci_controller_disable_interrupts(ihost);
+	}
+}
+
+static struct pci_driver isci_pci_driver = {
+	.name		= DRV_NAME,
+	.id_table	= isci_id_table,
+	.probe		= isci_pci_probe,
+	.remove		= __devexit_p(isci_pci_remove),
+};
+
+static __init int isci_init(void)
+{
+	int err;
+
+	pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME);
+
+	isci_transport_template = sas_domain_attach_transport(&isci_transport_ops);
+	if (!isci_transport_template)
+		return -ENOMEM;
+
+	err = pci_register_driver(&isci_pci_driver);
+	if (err)
+		sas_release_transport(isci_transport_template);
+
+	return err;
+}
+
+static __exit void isci_exit(void)
+{
+	pci_unregister_driver(&isci_pci_driver);
+	sas_release_transport(isci_transport_template);
+}
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_FIRMWARE(ISCI_FW_NAME);
+module_init(isci_init);
+module_exit(isci_exit);

drivers/scsi/isci/isci.h

@@ -0,0 +1,538 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __ISCI_H__
+#define __ISCI_H__
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+
+#define DRV_NAME "isci"
+#define SCI_PCI_BAR_COUNT 2
+#define SCI_NUM_MSI_X_INT 2
+#define SCI_SMU_BAR       0
+#define SCI_SMU_BAR_SIZE  (16*1024)
+#define SCI_SCU_BAR       1
+#define SCI_SCU_BAR_SIZE  (4*1024*1024)
+#define SCI_IO_SPACE_BAR0 2
+#define SCI_IO_SPACE_BAR1 3
+#define ISCI_CAN_QUEUE_VAL 250 /* < SCI_MAX_IO_REQUESTS ? */
+#define SCIC_CONTROLLER_STOP_TIMEOUT 5000
+
+#define SCI_CONTROLLER_INVALID_IO_TAG 0xFFFF
+
+#define SCI_MAX_PHYS  (4UL)
+#define SCI_MAX_PORTS SCI_MAX_PHYS
+#define SCI_MAX_SMP_PHYS  (384) /* not silicon constrained */
+#define SCI_MAX_REMOTE_DEVICES (256UL)
+#define SCI_MAX_IO_REQUESTS (256UL)
+#define SCI_MAX_SEQ (16)
+#define SCI_MAX_MSIX_MESSAGES  (2)
+#define SCI_MAX_SCATTER_GATHER_ELEMENTS 130 /* not silicon constrained */
+#define SCI_MAX_CONTROLLERS 2
+#define SCI_MAX_DOMAINS  SCI_MAX_PORTS
+
+#define SCU_MAX_CRITICAL_NOTIFICATIONS    (384)
+#define SCU_MAX_EVENTS_SHIFT		  (7)
+#define SCU_MAX_EVENTS                    (1 << SCU_MAX_EVENTS_SHIFT)
+#define SCU_MAX_UNSOLICITED_FRAMES        (128)
+#define SCU_MAX_COMPLETION_QUEUE_SCRATCH  (128)
+#define SCU_MAX_COMPLETION_QUEUE_ENTRIES  (SCU_MAX_CRITICAL_NOTIFICATIONS \
+					   + SCU_MAX_EVENTS \
+					   + SCU_MAX_UNSOLICITED_FRAMES	\
+					   + SCI_MAX_IO_REQUESTS \
+					   + SCU_MAX_COMPLETION_QUEUE_SCRATCH)
+#define SCU_MAX_COMPLETION_QUEUE_SHIFT	  (ilog2(SCU_MAX_COMPLETION_QUEUE_ENTRIES))
+
+#define SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES (4096)
+#define SCU_UNSOLICITED_FRAME_BUFFER_SIZE   (1024)
+#define SCU_INVALID_FRAME_INDEX             (0xFFFF)
+
+#define SCU_IO_REQUEST_MAX_SGE_SIZE         (0x00FFFFFF)
+#define SCU_IO_REQUEST_MAX_TRANSFER_LENGTH  (0x00FFFFFF)
+
+static inline void check_sizes(void)
+{
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_EVENTS);
+	BUILD_BUG_ON(SCU_MAX_UNSOLICITED_FRAMES <= 8);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_UNSOLICITED_FRAMES);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCU_MAX_COMPLETION_QUEUE_ENTRIES);
+	BUILD_BUG_ON(SCU_MAX_UNSOLICITED_FRAMES > SCU_ABSOLUTE_MAX_UNSOLICITED_FRAMES);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCI_MAX_IO_REQUESTS);
+	BUILD_BUG_ON_NOT_POWER_OF_2(SCI_MAX_SEQ);
+}
+
+/**
+ * enum sci_status - This is the general return status enumeration for non-IO,
+ *    non-task management related SCI interface methods.
+ *
+ *
+ */
+enum sci_status {
+	/**
+	 * This member indicates successful completion.
+	 */
+	SCI_SUCCESS = 0,
+
+	/**
+	 * This value indicates that the calling method completed successfully,
+	 * but that the IO may have completed before having it's start method
+	 * invoked.  This occurs during SAT translation for requests that do
+	 * not require an IO to the target or for any other requests that may
+	 * be completed without having to submit IO.
+	 */
+	SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
+
+	/**
+	 *  This Value indicates that the SCU hardware returned an early response
+	 *  because the io request specified more data than is returned by the
+	 *  target device (mode pages, inquiry data, etc.). The completion routine
+	 *  will handle this case to get the actual number of bytes transferred.
+	 */
+	SCI_SUCCESS_IO_DONE_EARLY,
+
+	/**
+	 * This member indicates that the object for which a state change is
+	 * being requested is already in said state.
+	 */
+	SCI_WARNING_ALREADY_IN_STATE,
+
+	/**
+	 * This member indicates interrupt coalescence timer may cause SAS
+	 * specification compliance issues (i.e. SMP target mode response
+	 * frames must be returned within 1.9 milliseconds).
+	 */
+	SCI_WARNING_TIMER_CONFLICT,
+
+	/**
+	 * This field indicates a sequence of action is not completed yet. Mostly,
+	 * this status is used when multiple ATA commands are needed in a SATI translation.
+	 */
+	SCI_WARNING_SEQUENCE_INCOMPLETE,
+
+	/**
+	 * This member indicates that there was a general failure.
+	 */
+	SCI_FAILURE,
+
+	/**
+	 * This member indicates that the SCI implementation is unable to complete
+	 * an operation due to a critical flaw the prevents any further operation
+	 * (i.e. an invalid pointer).
+	 */
+	SCI_FATAL_ERROR,
+
+	/**
+	 * This member indicates the calling function failed, because the state
+	 * of the controller is in a state that prevents successful completion.
+	 */
+	SCI_FAILURE_INVALID_STATE,
+
+	/**
+	 * This member indicates the calling function failed, because there is
+	 * insufficient resources/memory to complete the request.
+	 */
+	SCI_FAILURE_INSUFFICIENT_RESOURCES,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * controller object required for the operation can't be located.
+	 */
+	SCI_FAILURE_CONTROLLER_NOT_FOUND,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * discovered controller type is not supported by the library.
+	 */
+	SCI_FAILURE_UNSUPPORTED_CONTROLLER_TYPE,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested initialization data version isn't supported.
+	 */
+	SCI_FAILURE_UNSUPPORTED_INIT_DATA_VERSION,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested configuration of SAS Phys into SAS Ports is not supported.
+	 */
+	SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested protocol is not supported by the remote device, port,
+	 * or controller.
+	 */
+	SCI_FAILURE_UNSUPPORTED_PROTOCOL,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested information type is not supported by the SCI implementation.
+	 */
+	SCI_FAILURE_UNSUPPORTED_INFORMATION_TYPE,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * device already exists.
+	 */
+	SCI_FAILURE_DEVICE_EXISTS,
+
+	/**
+	 * This member indicates the calling function failed, because adding
+	 * a phy to the object is not possible.
+	 */
+	SCI_FAILURE_ADDING_PHY_UNSUPPORTED,
+
+	/**
+	 * This member indicates the calling function failed, because the
+	 * requested information type is not supported by the SCI implementation.
+	 */
+	SCI_FAILURE_UNSUPPORTED_INFORMATION_FIELD,
+
+	/**
+	 * This member indicates the calling function failed, because the SCI
+	 * implementation does not support the supplied time limit.
+	 */
+	SCI_FAILURE_UNSUPPORTED_TIME_LIMIT,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain the specified Phy.
+	 */
+	SCI_FAILURE_INVALID_PHY,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain the specified Port.
+	 */
+	SCI_FAILURE_INVALID_PORT,
+
+	/**
+	 * This member indicates the calling method was partly successful
+	 * The port was reset but not all phys in port are operational
+	 */
+	SCI_FAILURE_RESET_PORT_PARTIAL_SUCCESS,
+
+	/**
+	 * This member indicates that calling method failed
+	 * The port reset did not complete because none of the phys are operational
+	 */
+	SCI_FAILURE_RESET_PORT_FAILURE,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain the specified remote device.
+	 */
+	SCI_FAILURE_INVALID_REMOTE_DEVICE,
+
+	/**
+	 * This member indicates the calling method failed, because the remote
+	 * device is in a bad state and requires a reset.
+	 */
+	SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
+
+	/**
+	 * This member indicates the calling method failed, because the SCI
+	 * implementation does not contain or support the specified IO tag.
+	 */
+	SCI_FAILURE_INVALID_IO_TAG,
+
+	/**
+	 * This member indicates that the operation failed and the user should
+	 * check the response data associated with the IO.
+	 */
+	SCI_FAILURE_IO_RESPONSE_VALID,
+
+	/**
+	 * This member indicates that the operation failed, the failure is
+	 * controller implementation specific, and the response data associated
+	 * with the request is not valid.  You can query for the controller
+	 * specific error information via sci_controller_get_request_status()
+	 */
+	SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
+
+	/**
+	 * This member indicated that the operation failed because the
+	 * user requested this IO to be terminated.
+	 */
+	SCI_FAILURE_IO_TERMINATED,
+
+	/**
+	 * This member indicates that the operation failed and the associated
+	 * request requires a SCSI abort task to be sent to the target.
+	 */
+	SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
+
+	/**
+	 * This member indicates that the operation failed because the supplied
+	 * device could not be located.
+	 */
+	SCI_FAILURE_DEVICE_NOT_FOUND,
+
+	/**
+	 * This member indicates that the operation failed because the
+	 * objects association is required and is not correctly set.
+	 */
+	SCI_FAILURE_INVALID_ASSOCIATION,
+
+	/**
+	 * This member indicates that the operation failed, because a timeout
+	 * occurred.
+	 */
+	SCI_FAILURE_TIMEOUT,
+
+	/**
+	 * This member indicates that the operation failed, because the user
+	 * specified a value that is either invalid or not supported.
+	 */
+	SCI_FAILURE_INVALID_PARAMETER_VALUE,
+
+	/**
+	 * This value indicates that the operation failed, because the number
+	 * of messages (MSI-X) is not supported.
+	 */
+	SCI_FAILURE_UNSUPPORTED_MESSAGE_COUNT,
+
+	/**
+	 * This value indicates that the method failed due to a lack of
+	 * available NCQ tags.
+	 */
+	SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
+
+	/**
+	 * This value indicates that a protocol violation has occurred on the
+	 * link.
+	 */
+	SCI_FAILURE_PROTOCOL_VIOLATION,
+
+	/**
+	 * This value indicates a failure condition that retry may help to clear.
+	 */
+	SCI_FAILURE_RETRY_REQUIRED,
+
+	/**
+	 * This field indicates the retry limit was reached when a retry is attempted
+	 */
+	SCI_FAILURE_RETRY_LIMIT_REACHED,
+
+	/**
+	 * This member indicates the calling method was partly successful.
+	 * Mostly, this status is used when a LUN_RESET issued to an expander attached
+	 * STP device in READY NCQ substate needs to have RNC suspended/resumed
+	 * before posting TC.
+	 */
+	SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS,
+
+	/**
+	 * This field indicates an illegal phy connection based on the routing attribute
+	 * of both expander phy attached to each other.
+	 */
+	SCI_FAILURE_ILLEGAL_ROUTING_ATTRIBUTE_CONFIGURATION,
+
+	/**
+	 * This field indicates a CONFIG ROUTE INFO command has a response with function result
+	 * INDEX DOES NOT EXIST, usually means exceeding max route index.
+	 */
+	SCI_FAILURE_EXCEED_MAX_ROUTE_INDEX,
+
+	/**
+	 * This value indicates that an unsupported PCI device ID has been
+	 * specified.  This indicates that attempts to invoke
+	 * sci_library_allocate_controller() will fail.
+	 */
+	SCI_FAILURE_UNSUPPORTED_PCI_DEVICE_ID
+
+};
+
+/**
+ * enum sci_io_status - This enumeration depicts all of the possible IO
+ *    completion status values.  Each value in this enumeration maps directly
+ *    to a value in the enum sci_status enumeration.  Please refer to that
+ *    enumeration for detailed comments concerning what the status represents.
+ *
+ * Add the API to retrieve the SCU status from the core. Check to see that the
+ * following status are properly handled: - SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL
+ * - SCI_IO_FAILURE_INVALID_IO_TAG
+ */
+enum sci_io_status {
+	SCI_IO_SUCCESS                         = SCI_SUCCESS,
+	SCI_IO_FAILURE                         = SCI_FAILURE,
+	SCI_IO_SUCCESS_COMPLETE_BEFORE_START   = SCI_SUCCESS_IO_COMPLETE_BEFORE_START,
+	SCI_IO_SUCCESS_IO_DONE_EARLY           = SCI_SUCCESS_IO_DONE_EARLY,
+	SCI_IO_FAILURE_INVALID_STATE           = SCI_FAILURE_INVALID_STATE,
+	SCI_IO_FAILURE_INSUFFICIENT_RESOURCES  = SCI_FAILURE_INSUFFICIENT_RESOURCES,
+	SCI_IO_FAILURE_UNSUPPORTED_PROTOCOL    = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
+	SCI_IO_FAILURE_RESPONSE_VALID          = SCI_FAILURE_IO_RESPONSE_VALID,
+	SCI_IO_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
+	SCI_IO_FAILURE_TERMINATED              = SCI_FAILURE_IO_TERMINATED,
+	SCI_IO_FAILURE_REQUIRES_SCSI_ABORT     = SCI_FAILURE_IO_REQUIRES_SCSI_ABORT,
+	SCI_IO_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
+	SCI_IO_FAILURE_NO_NCQ_TAG_AVAILABLE    = SCI_FAILURE_NO_NCQ_TAG_AVAILABLE,
+	SCI_IO_FAILURE_PROTOCOL_VIOLATION      = SCI_FAILURE_PROTOCOL_VIOLATION,
+
+	SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
+
+	SCI_IO_FAILURE_RETRY_REQUIRED      = SCI_FAILURE_RETRY_REQUIRED,
+	SCI_IO_FAILURE_RETRY_LIMIT_REACHED = SCI_FAILURE_RETRY_LIMIT_REACHED,
+	SCI_IO_FAILURE_INVALID_REMOTE_DEVICE = SCI_FAILURE_INVALID_REMOTE_DEVICE
+};
+
+/**
+ * enum sci_task_status - This enumeration depicts all of the possible task
+ *    completion status values.  Each value in this enumeration maps directly
+ *    to a value in the enum sci_status enumeration.  Please refer to that
+ *    enumeration for detailed comments concerning what the status represents.
+ *
+ * Check to see that the following status are properly handled:
+ */
+enum sci_task_status {
+	SCI_TASK_SUCCESS                         = SCI_SUCCESS,
+	SCI_TASK_FAILURE                         = SCI_FAILURE,
+	SCI_TASK_FAILURE_INVALID_STATE           = SCI_FAILURE_INVALID_STATE,
+	SCI_TASK_FAILURE_INSUFFICIENT_RESOURCES  = SCI_FAILURE_INSUFFICIENT_RESOURCES,
+	SCI_TASK_FAILURE_UNSUPPORTED_PROTOCOL    = SCI_FAILURE_UNSUPPORTED_PROTOCOL,
+	SCI_TASK_FAILURE_INVALID_TAG             = SCI_FAILURE_INVALID_IO_TAG,
+	SCI_TASK_FAILURE_RESPONSE_VALID          = SCI_FAILURE_IO_RESPONSE_VALID,
+	SCI_TASK_FAILURE_CONTROLLER_SPECIFIC_ERR = SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR,
+	SCI_TASK_FAILURE_TERMINATED              = SCI_FAILURE_IO_TERMINATED,
+	SCI_TASK_FAILURE_INVALID_PARAMETER_VALUE = SCI_FAILURE_INVALID_PARAMETER_VALUE,
+
+	SCI_TASK_FAILURE_REMOTE_DEVICE_RESET_REQUIRED = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED,
+	SCI_TASK_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS = SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS
+
+};
+
+/**
+ * sci_swab32_cpy - convert between scsi and scu-hardware byte format
+ * @dest: receive the 4-byte endian swapped version of src
+ * @src: word aligned source buffer
+ *
+ * scu hardware handles SSP/SMP control, response, and unidentified
+ * frames in "big endian dword" order.  Regardless of host endian this
+ * is always a swab32()-per-dword conversion of the standard definition,
+ * i.e. single byte fields swapped and multi-byte fields in little-
+ * endian
+ */
+static inline void sci_swab32_cpy(void *_dest, void *_src, ssize_t word_cnt)
+{
+	u32 *dest = _dest, *src = _src;
+
+	while (--word_cnt >= 0)
+		dest[word_cnt] = swab32(src[word_cnt]);
+}
+
+extern unsigned char no_outbound_task_to;
+extern u16 ssp_max_occ_to;
+extern u16 stp_max_occ_to;
+extern u16 ssp_inactive_to;
+extern u16 stp_inactive_to;
+extern unsigned char phy_gen;
+extern unsigned char max_concurr_spinup;
+
+irqreturn_t isci_msix_isr(int vec, void *data);
+irqreturn_t isci_intx_isr(int vec, void *data);
+irqreturn_t isci_error_isr(int vec, void *data);
+
+/*
+ * Each timer is associated with a cancellation flag that is set when
+ * del_timer() is called and checked in the timer callback function. This
+ * is needed since del_timer_sync() cannot be called with sci_lock held.
+ * For deinit however, del_timer_sync() is used without holding the lock.
+ */
+struct sci_timer {
+	struct timer_list	timer;
+	bool			cancel;
+};
+
+static inline
+void sci_init_timer(struct sci_timer *tmr, void (*fn)(unsigned long))
+{
+	tmr->timer.function = fn;
+	tmr->timer.data = (unsigned long) tmr;
+	tmr->cancel = 0;
+	init_timer(&tmr->timer);
+}
+
+static inline void sci_mod_timer(struct sci_timer *tmr, unsigned long msec)
+{
+	tmr->cancel = 0;
+	mod_timer(&tmr->timer, jiffies + msecs_to_jiffies(msec));
+}
+
+static inline void sci_del_timer(struct sci_timer *tmr)
+{
+	tmr->cancel = 1;
+	del_timer(&tmr->timer);
+}
+
+struct sci_base_state_machine {
+	const struct sci_base_state *state_table;
+	u32 initial_state_id;
+	u32 current_state_id;
+	u32 previous_state_id;
+};
+
+typedef void (*sci_state_transition_t)(struct sci_base_state_machine *sm);
+
+struct sci_base_state {
+	sci_state_transition_t enter_state;	/* Called on state entry */
+	sci_state_transition_t exit_state;	/* Called on state exit */
+};
+
+extern void sci_init_sm(struct sci_base_state_machine *sm,
+			const struct sci_base_state *state_table,
+			u32 initial_state);
+extern void sci_change_state(struct sci_base_state_machine *sm, u32 next_state);
+#endif  /* __ISCI_H__ */

drivers/scsi/isci/phy.c

@@ -0,0 +1,1312 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "isci.h"
+#include "host.h"
+#include "phy.h"
+#include "scu_event_codes.h"
+#include "probe_roms.h"
+
+/* Maximum arbitration wait time in micro-seconds */
+#define SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME  (700)
+
+enum sas_linkrate sci_phy_linkrate(struct isci_phy *iphy)
+{
+	return iphy->max_negotiated_speed;
+}
+
+static enum sci_status
+sci_phy_transport_layer_initialization(struct isci_phy *iphy,
+				       struct scu_transport_layer_registers __iomem *reg)
+{
+	u32 tl_control;
+
+	iphy->transport_layer_registers = reg;
+
+	writel(SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX,
+		&iphy->transport_layer_registers->stp_rni);
+
+	/*
+	 * Hardware team recommends that we enable the STP prefetch for all
+	 * transports
+	 */
+	tl_control = readl(&iphy->transport_layer_registers->control);
+	tl_control |= SCU_TLCR_GEN_BIT(STP_WRITE_DATA_PREFETCH);
+	writel(tl_control, &iphy->transport_layer_registers->control);
+
+	return SCI_SUCCESS;
+}
+
+static enum sci_status
+sci_phy_link_layer_initialization(struct isci_phy *iphy,
+				  struct scu_link_layer_registers __iomem *reg)
+{
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+	int phy_idx = iphy->phy_index;
+	struct sci_phy_user_params *phy_user = &ihost->user_parameters.phys[phy_idx];
+	struct sci_phy_oem_params *phy_oem =
+		&ihost->oem_parameters.phys[phy_idx];
+	u32 phy_configuration;
+	struct sci_phy_cap phy_cap;
+	u32 parity_check = 0;
+	u32 parity_count = 0;
+	u32 llctl, link_rate;
+	u32 clksm_value = 0;
+
+	iphy->link_layer_registers = reg;
+
+	/* Set our IDENTIFY frame data */
+	#define SCI_END_DEVICE 0x01
+
+	writel(SCU_SAS_TIID_GEN_BIT(SMP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(SSP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(STP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(DA_SATA_HOST) |
+	       SCU_SAS_TIID_GEN_VAL(DEVICE_TYPE, SCI_END_DEVICE),
+	       &iphy->link_layer_registers->transmit_identification);
+
+	/* Write the device SAS Address */
+	writel(0xFEDCBA98,
+	       &iphy->link_layer_registers->sas_device_name_high);
+	writel(phy_idx, &iphy->link_layer_registers->sas_device_name_low);
+
+	/* Write the source SAS Address */
+	writel(phy_oem->sas_address.high,
+		&iphy->link_layer_registers->source_sas_address_high);
+	writel(phy_oem->sas_address.low,
+		&iphy->link_layer_registers->source_sas_address_low);
+
+	/* Clear and Set the PHY Identifier */
+	writel(0, &iphy->link_layer_registers->identify_frame_phy_id);
+	writel(SCU_SAS_TIPID_GEN_VALUE(ID, phy_idx),
+		&iphy->link_layer_registers->identify_frame_phy_id);
+
+	/* Change the initial state of the phy configuration register */
+	phy_configuration =
+		readl(&iphy->link_layer_registers->phy_configuration);
+
+	/* Hold OOB state machine in reset */
+	phy_configuration |=  SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+	writel(phy_configuration,
+		&iphy->link_layer_registers->phy_configuration);
+
+	/* Configure the SNW capabilities */
+	phy_cap.all = 0;
+	phy_cap.start = 1;
+	phy_cap.gen3_no_ssc = 1;
+	phy_cap.gen2_no_ssc = 1;
+	phy_cap.gen1_no_ssc = 1;
+	if (ihost->oem_parameters.controller.do_enable_ssc == true) {
+		phy_cap.gen3_ssc = 1;
+		phy_cap.gen2_ssc = 1;
+		phy_cap.gen1_ssc = 1;
+	}
+
+	/*
+	 * The SAS specification indicates that the phy_capabilities that
+	 * are transmitted shall have an even parity.  Calculate the parity. */
+	parity_check = phy_cap.all;
+	while (parity_check != 0) {
+		if (parity_check & 0x1)
+			parity_count++;
+		parity_check >>= 1;
+	}
+
+	/*
+	 * If parity indicates there are an odd number of bits set, then
+	 * set the parity bit to 1 in the phy capabilities. */
+	if ((parity_count % 2) != 0)
+		phy_cap.parity = 1;
+
+	writel(phy_cap.all, &iphy->link_layer_registers->phy_capabilities);
+
+	/* Set the enable spinup period but disable the ability to send
+	 * notify enable spinup
+	 */
+	writel(SCU_ENSPINUP_GEN_VAL(COUNT,
+			phy_user->notify_enable_spin_up_insertion_frequency),
+		&iphy->link_layer_registers->notify_enable_spinup_control);
+
+	/* Write the ALIGN Insertion Ferequency for connected phy and
+	 * inpendent of connected state
+	 */
+	clksm_value = SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(CONNECTED,
+			phy_user->in_connection_align_insertion_frequency);
+
+	clksm_value |= SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(GENERAL,
+			phy_user->align_insertion_frequency);
+
+	writel(clksm_value, &iphy->link_layer_registers->clock_skew_management);
+
+	/* @todo Provide a way to write this register correctly */
+	writel(0x02108421,
+		&iphy->link_layer_registers->afe_lookup_table_control);
+
+	llctl = SCU_SAS_LLCTL_GEN_VAL(NO_OUTBOUND_TASK_TIMEOUT,
+		(u8)ihost->user_parameters.no_outbound_task_timeout);
+
+	switch (phy_user->max_speed_generation) {
+	case SCIC_SDS_PARM_GEN3_SPEED:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN3;
+		break;
+	case SCIC_SDS_PARM_GEN2_SPEED:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN2;
+		break;
+	default:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN1;
+		break;
+	}
+	llctl |= SCU_SAS_LLCTL_GEN_VAL(MAX_LINK_RATE, link_rate);
+	writel(llctl, &iphy->link_layer_registers->link_layer_control);
+
+	if (is_a2(ihost->pdev)) {
+		/* Program the max ARB time for the PHY to 700us so we inter-operate with
+		 * the PMC expander which shuts down PHYs if the expander PHY generates too
+		 * many breaks.  This time value will guarantee that the initiator PHY will
+		 * generate the break.
+		 */
+		writel(SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME,
+			&iphy->link_layer_registers->maximum_arbitration_wait_timer_timeout);
+	}
+
+	/* Disable link layer hang detection, rely on the OS timeout for I/O timeouts. */
+	writel(0, &iphy->link_layer_registers->link_layer_hang_detection_timeout);
+
+	/* We can exit the initial state to the stopped state */
+	sci_change_state(&iphy->sm, SCI_PHY_STOPPED);
+
+	return SCI_SUCCESS;
+}
+
+static void phy_sata_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_phy *iphy = container_of(tmr, typeof(*iphy), sata_timer);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	dev_dbg(sciphy_to_dev(iphy),
+		 "%s: SCIC SDS Phy 0x%p did not receive signature fis before "
+		 "timeout.\n",
+		 __func__,
+		 iphy);
+
+	sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+/**
+ * This method returns the port currently containing this phy. If the phy is
+ *    currently contained by the dummy port, then the phy is considered to not
+ *    be part of a port.
+ * @sci_phy: This parameter specifies the phy for which to retrieve the
+ *    containing port.
+ *
+ * This method returns a handle to a port that contains the supplied phy.
+ * NULL This value is returned if the phy is not part of a real
+ * port (i.e. it's contained in the dummy port). !NULL All other
+ * values indicate a handle/pointer to the port containing the phy.
+ */
+struct isci_port *phy_get_non_dummy_port(struct isci_phy *iphy)
+{
+	struct isci_port *iport = iphy->owning_port;
+
+	if (iport->physical_port_index == SCIC_SDS_DUMMY_PORT)
+		return NULL;
+
+	return iphy->owning_port;
+}
+
+/**
+ * This method will assign a port to the phy object.
+ * @out]: iphy This parameter specifies the phy for which to assign a port
+ *    object.
+ *
+ *
+ */
+void sci_phy_set_port(
+	struct isci_phy *iphy,
+	struct isci_port *iport)
+{
+	iphy->owning_port = iport;
+
+	if (iphy->bcn_received_while_port_unassigned) {
+		iphy->bcn_received_while_port_unassigned = false;
+		sci_port_broadcast_change_received(iphy->owning_port, iphy);
+	}
+}
+
+enum sci_status sci_phy_initialize(struct isci_phy *iphy,
+				   struct scu_transport_layer_registers __iomem *tl,
+				   struct scu_link_layer_registers __iomem *ll)
+{
+	/* Perfrom the initialization of the TL hardware */
+	sci_phy_transport_layer_initialization(iphy, tl);
+
+	/* Perofrm the initialization of the PE hardware */
+	sci_phy_link_layer_initialization(iphy, ll);
+
+	/* There is nothing that needs to be done in this state just
+	 * transition to the stopped state
+	 */
+	sci_change_state(&iphy->sm, SCI_PHY_STOPPED);
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * This method assigns the direct attached device ID for this phy.
+ *
+ * @iphy The phy for which the direct attached device id is to
+ *       be assigned.
+ * @device_id The direct attached device ID to assign to the phy.
+ *       This will either be the RNi for the device or an invalid RNi if there
+ *       is no current device assigned to the phy.
+ */
+void sci_phy_setup_transport(struct isci_phy *iphy, u32 device_id)
+{
+	u32 tl_control;
+
+	writel(device_id, &iphy->transport_layer_registers->stp_rni);
+
+	/*
+	 * The read should guarantee that the first write gets posted
+	 * before the next write
+	 */
+	tl_control = readl(&iphy->transport_layer_registers->control);
+	tl_control |= SCU_TLCR_GEN_BIT(CLEAR_TCI_NCQ_MAPPING_TABLE);
+	writel(tl_control, &iphy->transport_layer_registers->control);
+}
+
+static void sci_phy_suspend(struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE);
+	writel(scu_sas_pcfg_value,
+		&iphy->link_layer_registers->phy_configuration);
+
+	sci_phy_setup_transport(iphy, SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX);
+}
+
+void sci_phy_resume(struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value &= ~SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE);
+	writel(scu_sas_pcfg_value,
+		&iphy->link_layer_registers->phy_configuration);
+}
+
+void sci_phy_get_sas_address(struct isci_phy *iphy, struct sci_sas_address *sas)
+{
+	sas->high = readl(&iphy->link_layer_registers->source_sas_address_high);
+	sas->low = readl(&iphy->link_layer_registers->source_sas_address_low);
+}
+
+void sci_phy_get_attached_sas_address(struct isci_phy *iphy, struct sci_sas_address *sas)
+{
+	struct sas_identify_frame *iaf;
+
+	iaf = &iphy->frame_rcvd.iaf;
+	memcpy(sas, iaf->sas_addr, SAS_ADDR_SIZE);
+}
+
+void sci_phy_get_protocols(struct isci_phy *iphy, struct sci_phy_proto *proto)
+{
+	proto->all = readl(&iphy->link_layer_registers->transmit_identification);
+}
+
+enum sci_status sci_phy_start(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	if (state != SCI_PHY_STOPPED) {
+		dev_dbg(sciphy_to_dev(iphy),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_phy_stop(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PHY_SUB_INITIAL:
+	case SCI_PHY_SUB_AWAIT_OSSP_EN:
+	case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_SAS_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_POWER:
+	case SCI_PHY_SUB_AWAIT_SATA_PHY_EN:
+	case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN:
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF:
+	case SCI_PHY_SUB_FINAL:
+	case SCI_PHY_READY:
+		break;
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(&iphy->sm, SCI_PHY_STOPPED);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_phy_reset(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	if (state != SCI_PHY_READY) {
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	sci_change_state(&iphy->sm, SCI_PHY_RESETTING);
+	return SCI_SUCCESS;
+}
+
+enum sci_status sci_phy_consume_power_handler(struct isci_phy *iphy)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PHY_SUB_AWAIT_SAS_POWER: {
+		u32 enable_spinup;
+
+		enable_spinup = readl(&iphy->link_layer_registers->notify_enable_spinup_control);
+		enable_spinup |= SCU_ENSPINUP_GEN_BIT(ENABLE);
+		writel(enable_spinup, &iphy->link_layer_registers->notify_enable_spinup_control);
+
+		/* Change state to the final state this substate machine has run to completion */
+		sci_change_state(&iphy->sm, SCI_PHY_SUB_FINAL);
+
+		return SCI_SUCCESS;
+	}
+	case SCI_PHY_SUB_AWAIT_SATA_POWER: {
+		u32 scu_sas_pcfg_value;
+
+		/* Release the spinup hold state and reset the OOB state machine */
+		scu_sas_pcfg_value =
+			readl(&iphy->link_layer_registers->phy_configuration);
+		scu_sas_pcfg_value &=
+			~(SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD) | SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE));
+		scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+		writel(scu_sas_pcfg_value,
+			&iphy->link_layer_registers->phy_configuration);
+
+		/* Now restart the OOB operation */
+		scu_sas_pcfg_value &= ~SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+		scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
+		writel(scu_sas_pcfg_value,
+			&iphy->link_layer_registers->phy_configuration);
+
+		/* Change state to the final state this substate machine has run to completion */
+		sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_PHY_EN);
+
+		return SCI_SUCCESS;
+	}
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+static void sci_phy_start_sas_link_training(struct isci_phy *iphy)
+{
+	/* continue the link training for the phy as if it were a SAS PHY
+	 * instead of a SATA PHY. This is done because the completion queue had a SAS
+	 * PHY DETECTED event when the state machine was expecting a SATA PHY event.
+	 */
+	u32 phy_control;
+
+	phy_control = readl(&iphy->link_layer_registers->phy_configuration);
+	phy_control |= SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD);
+	writel(phy_control,
+	       &iphy->link_layer_registers->phy_configuration);
+
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SAS_SPEED_EN);
+
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SAS;
+}
+
+static void sci_phy_start_sata_link_training(struct isci_phy *iphy)
+{
+	/* This method continues the link training for the phy as if it were a SATA PHY
+	 * instead of a SAS PHY.  This is done because the completion queue had a SATA
+	 * SPINUP HOLD event when the state machine was expecting a SAS PHY event. none
+	 */
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_POWER);
+
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA;
+}
+
+/**
+ * sci_phy_complete_link_training - perform processing common to
+ *    all protocols upon completion of link training.
+ * @sci_phy: This parameter specifies the phy object for which link training
+ *    has completed.
+ * @max_link_rate: This parameter specifies the maximum link rate to be
+ *    associated with this phy.
+ * @next_state: This parameter specifies the next state for the phy's starting
+ *    sub-state machine.
+ *
+ */
+static void sci_phy_complete_link_training(struct isci_phy *iphy,
+					   enum sas_linkrate max_link_rate,
+					   u32 next_state)
+{
+	iphy->max_negotiated_speed = max_link_rate;
+
+	sci_change_state(&iphy->sm, next_state);
+}
+
+enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PHY_SUB_AWAIT_OSSP_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			sci_phy_start_sas_link_training(iphy);
+			iphy->is_in_link_training = true;
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			sci_phy_start_sata_link_training(iphy);
+			iphy->is_in_link_training = true;
+			break;
+		default:
+			dev_dbg(sciphy_to_dev(iphy),
+				"%s: PHY starting substate machine received "
+				"unexpected event_code %x\n",
+				__func__,
+				event_code);
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/*
+			 * Why is this being reported again by the controller?
+			 * We would re-enter this state so just stay here */
+			break;
+		case SCU_EVENT_SAS_15:
+		case SCU_EVENT_SAS_15_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_1_5_GBPS,
+						       SCI_PHY_SUB_AWAIT_IAF_UF);
+			break;
+		case SCU_EVENT_SAS_30:
+		case SCU_EVENT_SAS_30_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_3_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_IAF_UF);
+			break;
+		case SCU_EVENT_SAS_60:
+		case SCU_EVENT_SAS_60_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_6_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_IAF_UF);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/*
+			 * We were doing SAS PHY link training and received a SATA PHY event
+			 * continue OOB/SN as if this were a SATA PHY */
+			sci_phy_start_sata_link_training(iphy);
+			break;
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+
+			return SCI_FAILURE;
+			break;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_IAF_UF:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/* Backup the state machine */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/* We were doing SAS PHY link training and received a
+			 * SATA PHY event continue OOB/SN as if this were a
+			 * SATA PHY
+			 */
+			sci_phy_start_sata_link_training(iphy);
+			break;
+		case SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT:
+		case SCU_EVENT_LINK_FAILURE:
+		case SCU_EVENT_HARD_RESET_RECEIVED:
+			/* Start the oob/sn state machine over again */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SAS_POWER:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				"%s: PHY starting substate machine received unexpected "
+				"event_code %x\n",
+				__func__,
+				event_code);
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SATA_POWER:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/* These events are received every 10ms and are
+			 * expected while in this state
+			 */
+			break;
+
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/* There has been a change in the phy type before OOB/SN for the
+			 * SATA finished start down the SAS link traning path.
+			 */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SATA_PHY_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_SATA_SPINUP_HOLD:
+			/* These events might be received since we dont know how many may be in
+			 * the completion queue while waiting for power
+			 */
+			break;
+		case SCU_EVENT_SATA_PHY_DETECTED:
+			iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA;
+
+			/* We have received the SATA PHY notification change state */
+			sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_SPEED_EN);
+			break;
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/* There has been a change in the phy type before OOB/SN for the
+			 * SATA finished start down the SAS link traning path.
+			 */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__,
+				 event_code);
+
+			return SCI_FAILURE;;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SATA_PHY_DETECTED:
+			/*
+			 * The hardware reports multiple SATA PHY detected events
+			 * ignore the extras */
+			break;
+		case SCU_EVENT_SATA_15:
+		case SCU_EVENT_SATA_15_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_1_5_GBPS,
+						       SCI_PHY_SUB_AWAIT_SIG_FIS_UF);
+			break;
+		case SCU_EVENT_SATA_30:
+		case SCU_EVENT_SATA_30_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_3_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_SIG_FIS_UF);
+			break;
+		case SCU_EVENT_SATA_60:
+		case SCU_EVENT_SATA_60_SSC:
+			sci_phy_complete_link_training(iphy, SAS_LINK_RATE_6_0_GBPS,
+						       SCI_PHY_SUB_AWAIT_SIG_FIS_UF);
+			break;
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_SAS_PHY_DETECTED:
+			/*
+			 * There has been a change in the phy type before OOB/SN for the
+			 * SATA finished start down the SAS link traning path. */
+			sci_phy_start_sas_link_training(iphy);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__, event_code);
+
+			return SCI_FAILURE;
+		}
+
+		return SCI_SUCCESS;
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_SATA_PHY_DETECTED:
+			/* Backup the state machine */
+			sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_SPEED_EN);
+			break;
+
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected event_code %x\n",
+				 __func__,
+				 event_code);
+
+			return SCI_FAILURE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_READY:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_LINK_FAILURE:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		case SCU_EVENT_BROADCAST_CHANGE:
+			/* Broadcast change received. Notify the port. */
+			if (phy_get_non_dummy_port(iphy) != NULL)
+				sci_port_broadcast_change_received(iphy->owning_port, iphy);
+			else
+				iphy->bcn_received_while_port_unassigned = true;
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%sP SCIC PHY 0x%p ready state machine received "
+				 "unexpected event_code %x\n",
+				 __func__, iphy, event_code);
+			return SCI_FAILURE_INVALID_STATE;
+		}
+		return SCI_SUCCESS;
+	case SCI_PHY_RESETTING:
+		switch (scu_get_event_code(event_code)) {
+		case SCU_EVENT_HARD_RESET_TRANSMITTED:
+			/* Link failure change state back to the starting state */
+			sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+			break;
+		default:
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: SCIC PHY 0x%p resetting state machine received "
+				 "unexpected event_code %x\n",
+				 __func__, iphy, event_code);
+
+			return SCI_FAILURE_INVALID_STATE;
+			break;
+		}
+		return SCI_SUCCESS;
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_phy_frame_handler(struct isci_phy *iphy, u32 frame_index)
+{
+	enum sci_phy_states state = iphy->sm.current_state_id;
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+	enum sci_status result;
+	unsigned long flags;
+
+	switch (state) {
+	case SCI_PHY_SUB_AWAIT_IAF_UF: {
+		u32 *frame_words;
+		struct sas_identify_frame iaf;
+
+		result = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								  frame_index,
+								  (void **)&frame_words);
+
+		if (result != SCI_SUCCESS)
+			return result;
+
+		sci_swab32_cpy(&iaf, frame_words, sizeof(iaf) / sizeof(u32));
+		if (iaf.frame_type == 0) {
+			u32 state;
+
+			spin_lock_irqsave(&iphy->sas_phy.frame_rcvd_lock, flags);
+			memcpy(&iphy->frame_rcvd.iaf, &iaf, sizeof(iaf));
+			spin_unlock_irqrestore(&iphy->sas_phy.frame_rcvd_lock, flags);
+			if (iaf.smp_tport) {
+				/* We got the IAF for an expander PHY go to the final
+				 * state since there are no power requirements for
+				 * expander phys.
+				 */
+				state = SCI_PHY_SUB_FINAL;
+			} else {
+				/* We got the IAF we can now go to the await spinup
+				 * semaphore state
+				 */
+				state = SCI_PHY_SUB_AWAIT_SAS_POWER;
+			}
+			sci_change_state(&iphy->sm, state);
+			result = SCI_SUCCESS;
+		} else
+			dev_warn(sciphy_to_dev(iphy),
+				"%s: PHY starting substate machine received "
+				"unexpected frame id %x\n",
+				__func__, frame_index);
+
+		sci_controller_release_frame(ihost, frame_index);
+		return result;
+	}
+	case SCI_PHY_SUB_AWAIT_SIG_FIS_UF: {
+		struct dev_to_host_fis *frame_header;
+		u32 *fis_frame_data;
+
+		result = sci_unsolicited_frame_control_get_header(&ihost->uf_control,
+								  frame_index,
+								  (void **)&frame_header);
+
+		if (result != SCI_SUCCESS)
+			return result;
+
+		if ((frame_header->fis_type == FIS_REGD2H) &&
+		    !(frame_header->status & ATA_BUSY)) {
+			sci_unsolicited_frame_control_get_buffer(&ihost->uf_control,
+								 frame_index,
+								 (void **)&fis_frame_data);
+
+			spin_lock_irqsave(&iphy->sas_phy.frame_rcvd_lock, flags);
+			sci_controller_copy_sata_response(&iphy->frame_rcvd.fis,
+							  frame_header,
+							  fis_frame_data);
+			spin_unlock_irqrestore(&iphy->sas_phy.frame_rcvd_lock, flags);
+
+			/* got IAF we can now go to the await spinup semaphore state */
+			sci_change_state(&iphy->sm, SCI_PHY_SUB_FINAL);
+
+			result = SCI_SUCCESS;
+		} else
+			dev_warn(sciphy_to_dev(iphy),
+				 "%s: PHY starting substate machine received "
+				 "unexpected frame id %x\n",
+				 __func__, frame_index);
+
+		/* Regardless of the result we are done with this frame with it */
+		sci_controller_release_frame(ihost, frame_index);
+
+		return result;
+	}
+	default:
+		dev_dbg(sciphy_to_dev(iphy),
+			"%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+}
+
+static void sci_phy_starting_initial_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	/* This is just an temporary state go off to the starting state */
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_OSSP_EN);
+}
+
+static void sci_phy_starting_await_sas_power_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_insert(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sas_power_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_remove(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sata_power_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_insert(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sata_power_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_host *ihost = iphy->owning_port->owning_controller;
+
+	sci_controller_power_control_queue_remove(ihost, iphy);
+}
+
+static void sci_phy_starting_await_sata_phy_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_mod_timer(&iphy->sata_timer, SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT);
+}
+
+static void sci_phy_starting_await_sata_phy_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_del_timer(&iphy->sata_timer);
+}
+
+static void sci_phy_starting_await_sata_speed_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_mod_timer(&iphy->sata_timer, SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT);
+}
+
+static void sci_phy_starting_await_sata_speed_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_del_timer(&iphy->sata_timer);
+}
+
+static void sci_phy_starting_await_sig_fis_uf_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	if (sci_port_link_detected(iphy->owning_port, iphy)) {
+
+		/*
+		 * Clear the PE suspend condition so we can actually
+		 * receive SIG FIS
+		 * The hardware will not respond to the XRDY until the PE
+		 * suspend condition is cleared.
+		 */
+		sci_phy_resume(iphy);
+
+		sci_mod_timer(&iphy->sata_timer,
+			      SCIC_SDS_SIGNATURE_FIS_TIMEOUT);
+	} else
+		iphy->is_in_link_training = false;
+}
+
+static void sci_phy_starting_await_sig_fis_uf_substate_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_del_timer(&iphy->sata_timer);
+}
+
+static void sci_phy_starting_final_substate_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	/* State machine has run to completion so exit out and change
+	 * the base state machine to the ready state
+	 */
+	sci_change_state(&iphy->sm, SCI_PHY_READY);
+}
+
+/**
+ *
+ * @sci_phy: This is the struct isci_phy object to stop.
+ *
+ * This method will stop the struct isci_phy object. This does not reset the
+ * protocol engine it just suspends it and places it in a state where it will
+ * not cause the end device to power up. none
+ */
+static void scu_link_layer_stop_protocol_engine(
+	struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+	u32 enable_spinup_value;
+
+	/* Suspend the protocol engine and place it in a sata spinup hold state */
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value |=
+		(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) |
+		 SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE) |
+		 SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD));
+	writel(scu_sas_pcfg_value,
+	       &iphy->link_layer_registers->phy_configuration);
+
+	/* Disable the notify enable spinup primitives */
+	enable_spinup_value = readl(&iphy->link_layer_registers->notify_enable_spinup_control);
+	enable_spinup_value &= ~SCU_ENSPINUP_GEN_BIT(ENABLE);
+	writel(enable_spinup_value, &iphy->link_layer_registers->notify_enable_spinup_control);
+}
+
+/**
+ *
+ *
+ * This method will start the OOB/SN state machine for this struct isci_phy object.
+ */
+static void scu_link_layer_start_oob(
+	struct isci_phy *iphy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
+	scu_sas_pcfg_value &=
+		~(SCU_SAS_PCFG_GEN_BIT(OOB_RESET) |
+		SCU_SAS_PCFG_GEN_BIT(HARD_RESET));
+	writel(scu_sas_pcfg_value,
+	       &iphy->link_layer_registers->phy_configuration);
+}
+
+/**
+ *
+ *
+ * This method will transmit a hard reset request on the specified phy. The SCU
+ * hardware requires that we reset the OOB state machine and set the hard reset
+ * bit in the phy configuration register. We then must start OOB over with the
+ * hard reset bit set.
+ */
+static void scu_link_layer_tx_hard_reset(
+	struct isci_phy *iphy)
+{
+	u32 phy_configuration_value;
+
+	/*
+	 * SAS Phys must wait for the HARD_RESET_TX event notification to transition
+	 * to the starting state. */
+	phy_configuration_value =
+		readl(&iphy->link_layer_registers->phy_configuration);
+	phy_configuration_value |=
+		(SCU_SAS_PCFG_GEN_BIT(HARD_RESET) |
+		 SCU_SAS_PCFG_GEN_BIT(OOB_RESET));
+	writel(phy_configuration_value,
+	       &iphy->link_layer_registers->phy_configuration);
+
+	/* Now take the OOB state machine out of reset */
+	phy_configuration_value |= SCU_SAS_PCFG_GEN_BIT(OOB_ENABLE);
+	phy_configuration_value &= ~SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+	writel(phy_configuration_value,
+	       &iphy->link_layer_registers->phy_configuration);
+}
+
+static void sci_phy_stopped_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_port *iport = iphy->owning_port;
+	struct isci_host *ihost = iport->owning_controller;
+
+	/*
+	 * @todo We need to get to the controller to place this PE in a
+	 * reset state
+	 */
+	sci_del_timer(&iphy->sata_timer);
+
+	scu_link_layer_stop_protocol_engine(iphy);
+
+	if (iphy->sm.previous_state_id != SCI_PHY_INITIAL)
+		sci_controller_link_down(ihost, phy_get_non_dummy_port(iphy), iphy);
+}
+
+static void sci_phy_starting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_port *iport = iphy->owning_port;
+	struct isci_host *ihost = iport->owning_controller;
+
+	scu_link_layer_stop_protocol_engine(iphy);
+	scu_link_layer_start_oob(iphy);
+
+	/* We don't know what kind of phy we are going to be just yet */
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN;
+	iphy->bcn_received_while_port_unassigned = false;
+
+	if (iphy->sm.previous_state_id == SCI_PHY_READY)
+		sci_controller_link_down(ihost, phy_get_non_dummy_port(iphy), iphy);
+
+	sci_change_state(&iphy->sm, SCI_PHY_SUB_INITIAL);
+}
+
+static void sci_phy_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+	struct isci_port *iport = iphy->owning_port;
+	struct isci_host *ihost = iport->owning_controller;
+
+	sci_controller_link_up(ihost, phy_get_non_dummy_port(iphy), iphy);
+}
+
+static void sci_phy_ready_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	sci_phy_suspend(iphy);
+}
+
+static void sci_phy_resetting_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_phy *iphy = container_of(sm, typeof(*iphy), sm);
+
+	/* The phy is being reset, therefore deactivate it from the port.  In
+	 * the resetting state we don't notify the user regarding link up and
+	 * link down notifications
+	 */
+	sci_port_deactivate_phy(iphy->owning_port, iphy, false);
+
+	if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
+		scu_link_layer_tx_hard_reset(iphy);
+	} else {
+		/* The SCU does not need to have a discrete reset state so
+		 * just go back to the starting state.
+		 */
+		sci_change_state(&iphy->sm, SCI_PHY_STARTING);
+	}
+}
+
+static const struct sci_base_state sci_phy_state_table[] = {
+	[SCI_PHY_INITIAL] = { },
+	[SCI_PHY_STOPPED] = {
+		.enter_state = sci_phy_stopped_state_enter,
+	},
+	[SCI_PHY_STARTING] = {
+		.enter_state = sci_phy_starting_state_enter,
+	},
+	[SCI_PHY_SUB_INITIAL] = {
+		.enter_state = sci_phy_starting_initial_substate_enter,
+	},
+	[SCI_PHY_SUB_AWAIT_OSSP_EN] = { },
+	[SCI_PHY_SUB_AWAIT_SAS_SPEED_EN] = { },
+	[SCI_PHY_SUB_AWAIT_IAF_UF] = { },
+	[SCI_PHY_SUB_AWAIT_SAS_POWER] = {
+		.enter_state = sci_phy_starting_await_sas_power_substate_enter,
+		.exit_state  = sci_phy_starting_await_sas_power_substate_exit,
+	},
+	[SCI_PHY_SUB_AWAIT_SATA_POWER] = {
+		.enter_state = sci_phy_starting_await_sata_power_substate_enter,
+		.exit_state  = sci_phy_starting_await_sata_power_substate_exit
+	},
+	[SCI_PHY_SUB_AWAIT_SATA_PHY_EN] = {
+		.enter_state = sci_phy_starting_await_sata_phy_substate_enter,
+		.exit_state  = sci_phy_starting_await_sata_phy_substate_exit
+	},
+	[SCI_PHY_SUB_AWAIT_SATA_SPEED_EN] = {
+		.enter_state = sci_phy_starting_await_sata_speed_substate_enter,
+		.exit_state  = sci_phy_starting_await_sata_speed_substate_exit
+	},
+	[SCI_PHY_SUB_AWAIT_SIG_FIS_UF] = {
+		.enter_state = sci_phy_starting_await_sig_fis_uf_substate_enter,
+		.exit_state  = sci_phy_starting_await_sig_fis_uf_substate_exit
+	},
+	[SCI_PHY_SUB_FINAL] = {
+		.enter_state = sci_phy_starting_final_substate_enter,
+	},
+	[SCI_PHY_READY] = {
+		.enter_state = sci_phy_ready_state_enter,
+		.exit_state = sci_phy_ready_state_exit,
+	},
+	[SCI_PHY_RESETTING] = {
+		.enter_state = sci_phy_resetting_state_enter,
+	},
+	[SCI_PHY_FINAL] = { },
+};
+
+void sci_phy_construct(struct isci_phy *iphy,
+			    struct isci_port *iport, u8 phy_index)
+{
+	sci_init_sm(&iphy->sm, sci_phy_state_table, SCI_PHY_INITIAL);
+
+	/* Copy the rest of the input data to our locals */
+	iphy->owning_port = iport;
+	iphy->phy_index = phy_index;
+	iphy->bcn_received_while_port_unassigned = false;
+	iphy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN;
+	iphy->link_layer_registers = NULL;
+	iphy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
+
+	/* Create the SIGNATURE FIS Timeout timer for this phy */
+	sci_init_timer(&iphy->sata_timer, phy_sata_timeout);
+}
+
+void isci_phy_init(struct isci_phy *iphy, struct isci_host *ihost, int index)
+{
+	struct sci_oem_params *oem = &ihost->oem_parameters;
+	u64 sci_sas_addr;
+	__be64 sas_addr;
+
+	sci_sas_addr = oem->phys[index].sas_address.high;
+	sci_sas_addr <<= 32;
+	sci_sas_addr |= oem->phys[index].sas_address.low;
+	sas_addr = cpu_to_be64(sci_sas_addr);
+	memcpy(iphy->sas_addr, &sas_addr, sizeof(sas_addr));
+
+	iphy->isci_port = NULL;
+	iphy->sas_phy.enabled = 0;
+	iphy->sas_phy.id = index;
+	iphy->sas_phy.sas_addr = &iphy->sas_addr[0];
+	iphy->sas_phy.frame_rcvd = (u8 *)&iphy->frame_rcvd;
+	iphy->sas_phy.ha = &ihost->sas_ha;
+	iphy->sas_phy.lldd_phy = iphy;
+	iphy->sas_phy.enabled = 1;
+	iphy->sas_phy.class = SAS;
+	iphy->sas_phy.iproto = SAS_PROTOCOL_ALL;
+	iphy->sas_phy.tproto = 0;
+	iphy->sas_phy.type = PHY_TYPE_PHYSICAL;
+	iphy->sas_phy.role = PHY_ROLE_INITIATOR;
+	iphy->sas_phy.oob_mode = OOB_NOT_CONNECTED;
+	iphy->sas_phy.linkrate = SAS_LINK_RATE_UNKNOWN;
+	memset(&iphy->frame_rcvd, 0, sizeof(iphy->frame_rcvd));
+}
+
+
+/**
+ * isci_phy_control() - This function is one of the SAS Domain Template
+ *    functions. This is a phy management function.
+ * @phy: This parameter specifies the sphy being controlled.
+ * @func: This parameter specifies the phy control function being invoked.
+ * @buf: This parameter is specific to the phy function being invoked.
+ *
+ * status, zero indicates success.
+ */
+int isci_phy_control(struct asd_sas_phy *sas_phy,
+		     enum phy_func func,
+		     void *buf)
+{
+	int ret = 0;
+	struct isci_phy *iphy = sas_phy->lldd_phy;
+	struct isci_port *iport = iphy->isci_port;
+	struct isci_host *ihost = sas_phy->ha->lldd_ha;
+	unsigned long flags;
+
+	dev_dbg(&ihost->pdev->dev,
+		"%s: phy %p; func %d; buf %p; isci phy %p, port %p\n",
+		__func__, sas_phy, func, buf, iphy, iport);
+
+	switch (func) {
+	case PHY_FUNC_DISABLE:
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		sci_phy_stop(iphy);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+		break;
+
+	case PHY_FUNC_LINK_RESET:
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		sci_phy_stop(iphy);
+		sci_phy_start(iphy);
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+		break;
+
+	case PHY_FUNC_HARD_RESET:
+		if (!iport)
+			return -ENODEV;
+
+		/* Perform the port reset. */
+		ret = isci_port_perform_hard_reset(ihost, iport, iphy);
+
+		break;
+
+	default:
+		dev_dbg(&ihost->pdev->dev,
+			   "%s: phy %p; func %d NOT IMPLEMENTED!\n",
+			   __func__, sas_phy, func);
+		ret = -ENOSYS;
+		break;
+	}
+	return ret;
+}

drivers/scsi/isci/phy.h

@@ -0,0 +1,504 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _ISCI_PHY_H_
+#define _ISCI_PHY_H_
+
+#include <scsi/sas.h>
+#include <scsi/libsas.h>
+#include "isci.h"
+#include "sas.h"
+
+/* This is the timeout value for the SATA phy to wait for a SIGNATURE FIS
+ * before restarting the starting state machine.  Technically, the old parallel
+ * ATA specification required up to 30 seconds for a device to issue its
+ * signature FIS as a result of a soft reset.  Now we see that devices respond
+ * generally within 15 seconds, but we'll use 25 for now.
+ */
+#define SCIC_SDS_SIGNATURE_FIS_TIMEOUT    25000
+
+/* This is the timeout for the SATA OOB/SN because the hardware does not
+ * recognize a hot plug after OOB signal but before the SN signals.  We need to
+ * make sure after a hotplug timeout if we have not received the speed event
+ * notification from the hardware that we restart the hardware OOB state
+ * machine.
+ */
+#define SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT  250
+
+enum sci_phy_protocol {
+	SCIC_SDS_PHY_PROTOCOL_UNKNOWN,
+	SCIC_SDS_PHY_PROTOCOL_SAS,
+	SCIC_SDS_PHY_PROTOCOL_SATA,
+	SCIC_SDS_MAX_PHY_PROTOCOLS
+};
+
+/**
+ * isci_phy - hba local phy infrastructure
+ * @sm:
+ * @protocol: attached device protocol
+ * @phy_index: physical index relative to the controller (0-3)
+ * @bcn_received_while_port_unassigned: bcn to report after port association
+ * @sata_timer: timeout SATA signature FIS arrival
+ */
+struct isci_phy {
+	struct sci_base_state_machine sm;
+	struct isci_port *owning_port;
+	enum sas_linkrate max_negotiated_speed;
+	enum sci_phy_protocol protocol;
+	u8 phy_index;
+	bool bcn_received_while_port_unassigned;
+	bool is_in_link_training;
+	struct sci_timer sata_timer;
+	struct scu_transport_layer_registers __iomem *transport_layer_registers;
+	struct scu_link_layer_registers __iomem *link_layer_registers;
+	struct asd_sas_phy sas_phy;
+	struct isci_port *isci_port;
+	u8 sas_addr[SAS_ADDR_SIZE];
+	union {
+		struct sas_identify_frame iaf;
+		struct dev_to_host_fis fis;
+	} frame_rcvd;
+};
+
+static inline struct isci_phy *to_iphy(struct asd_sas_phy *sas_phy)
+{
+	struct isci_phy *iphy = container_of(sas_phy, typeof(*iphy), sas_phy);
+
+	return iphy;
+}
+
+struct sci_phy_cap {
+	union {
+		struct {
+			/*
+			 * The SAS specification indicates the start bit shall
+			 * always be set to
+			 * 1.  This implementation will have the start bit set
+			 * to 0 if the PHY CAPABILITIES were either not
+			 * received or speed negotiation failed.
+			 */
+			u8 start:1;
+			u8 tx_ssc_type:1;
+			u8 res1:2;
+			u8 req_logical_linkrate:4;
+
+			u32 gen1_no_ssc:1;
+			u32 gen1_ssc:1;
+			u32 gen2_no_ssc:1;
+			u32 gen2_ssc:1;
+			u32 gen3_no_ssc:1;
+			u32 gen3_ssc:1;
+			u32 res2:17;
+			u32 parity:1;
+		};
+		u32 all;
+	};
+}  __packed;
+
+/* this data structure reflects the link layer transmit identification reg */
+struct sci_phy_proto {
+	union {
+		struct {
+			u16 _r_a:1;
+			u16 smp_iport:1;
+			u16 stp_iport:1;
+			u16 ssp_iport:1;
+			u16 _r_b:4;
+			u16 _r_c:1;
+			u16 smp_tport:1;
+			u16 stp_tport:1;
+			u16 ssp_tport:1;
+			u16 _r_d:4;
+		};
+		u16 all;
+	};
+} __packed;
+
+
+/**
+ * struct sci_phy_properties - This structure defines the properties common to
+ *    all phys that can be retrieved.
+ *
+ *
+ */
+struct sci_phy_properties {
+	/**
+	 * This field specifies the port that currently contains the
+	 * supplied phy.  This field may be set to NULL
+	 * if the phy is not currently contained in a port.
+	 */
+	struct isci_port *iport;
+
+	/**
+	 * This field specifies the link rate at which the phy is
+	 * currently operating.
+	 */
+	enum sas_linkrate negotiated_link_rate;
+
+	/**
+	 * This field specifies the index of the phy in relation to other
+	 * phys within the controller.  This index is zero relative.
+	 */
+	u8 index;
+};
+
+/**
+ * struct sci_sas_phy_properties - This structure defines the properties,
+ *    specific to a SAS phy, that can be retrieved.
+ *
+ *
+ */
+struct sci_sas_phy_properties {
+	/**
+	 * This field delineates the Identify Address Frame received
+	 * from the remote end point.
+	 */
+	struct sas_identify_frame rcvd_iaf;
+
+	/**
+	 * This field delineates the Phy capabilities structure received
+	 * from the remote end point.
+	 */
+	struct sci_phy_cap rcvd_cap;
+
+};
+
+/**
+ * struct sci_sata_phy_properties - This structure defines the properties,
+ *    specific to a SATA phy, that can be retrieved.
+ *
+ *
+ */
+struct sci_sata_phy_properties {
+	/**
+	 * This field delineates the signature FIS received from the
+	 * attached target.
+	 */
+	struct dev_to_host_fis signature_fis;
+
+	/**
+	 * This field specifies to the user if a port selector is connected
+	 * on the specified phy.
+	 */
+	bool is_port_selector_present;
+
+};
+
+/**
+ * enum sci_phy_counter_id - This enumeration depicts the various pieces of
+ *    optional information that can be retrieved for a specific phy.
+ *
+ *
+ */
+enum sci_phy_counter_id {
+	/**
+	 * This PHY information field tracks the number of frames received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME,
+
+	/**
+	 * This PHY information field tracks the number of frames transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_FRAME,
+
+	/**
+	 * This PHY information field tracks the number of DWORDs received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_WORD,
+
+	/**
+	 * This PHY information field tracks the number of DWORDs transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_FRAME_DWORD,
+
+	/**
+	 * This PHY information field tracks the number of times DWORD
+	 * synchronization was lost.
+	 */
+	SCIC_PHY_COUNTER_LOSS_OF_SYNC_ERROR,
+
+	/**
+	 * This PHY information field tracks the number of received DWORDs with
+	 * running disparity errors.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_DISPARITY_ERROR,
+
+	/**
+	 * This PHY information field tracks the number of received frames with a
+	 * CRC error (not including short or truncated frames).
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_CRC_ERROR,
+
+	/**
+	 * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT)
+	 * primitives received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_DONE_ACK_NAK_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of DONE (ACK/NAK TIMEOUT)
+	 * primitives transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_DONE_ACK_NAK_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of times the inactivity
+	 * timer for connections on the phy has been utilized.
+	 */
+	SCIC_PHY_COUNTER_INACTIVITY_TIMER_EXPIRED,
+
+	/**
+	 * This PHY information field tracks the number of DONE (CREDIT TIMEOUT)
+	 * primitives received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_DONE_CREDIT_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of DONE (CREDIT TIMEOUT)
+	 * primitives transmitted.
+	 */
+	SCIC_PHY_COUNTER_TRANSMITTED_DONE_CREDIT_TIMEOUT,
+
+	/**
+	 * This PHY information field tracks the number of CREDIT BLOCKED
+	 * primitives received.
+	 * @note Depending on remote device implementation, credit blocks
+	 *       may occur regularly.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_CREDIT_BLOCKED,
+
+	/**
+	 * This PHY information field contains the number of short frames
+	 * received.  A short frame is simply a frame smaller then what is
+	 * allowed by either the SAS or SATA specification.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_SHORT_FRAME,
+
+	/**
+	 * This PHY information field contains the number of frames received after
+	 * credit has been exhausted.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_WITHOUT_CREDIT,
+
+	/**
+	 * This PHY information field contains the number of frames received after
+	 * a DONE has been received.
+	 */
+	SCIC_PHY_COUNTER_RECEIVED_FRAME_AFTER_DONE,
+
+	/**
+	 * This PHY information field contains the number of times the phy
+	 * failed to achieve DWORD synchronization during speed negotiation.
+	 */
+	SCIC_PHY_COUNTER_SN_DWORD_SYNC_ERROR
+};
+
+enum sci_phy_states {
+	/**
+	 * Simply the initial state for the base domain state machine.
+	 */
+	SCI_PHY_INITIAL,
+
+	/**
+	 * This state indicates that the phy has successfully been stopped.
+	 * In this state no new IO operations are permitted on this phy.
+	 * This state is entered from the INITIAL state.
+	 * This state is entered from the STARTING state.
+	 * This state is entered from the READY state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCI_PHY_STOPPED,
+
+	/**
+	 * This state indicates that the phy is in the process of becomming
+	 * ready.  In this state no new IO operations are permitted on this phy.
+	 * This state is entered from the STOPPED state.
+	 * This state is entered from the READY state.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCI_PHY_STARTING,
+
+	/**
+	 * Initial state
+	 */
+	SCI_PHY_SUB_INITIAL,
+
+	/**
+	 * Wait state for the hardware OSSP event type notification
+	 */
+	SCI_PHY_SUB_AWAIT_OSSP_EN,
+
+	/**
+	 * Wait state for the PHY speed notification
+	 */
+	SCI_PHY_SUB_AWAIT_SAS_SPEED_EN,
+
+	/**
+	 * Wait state for the IAF Unsolicited frame notification
+	 */
+	SCI_PHY_SUB_AWAIT_IAF_UF,
+
+	/**
+	 * Wait state for the request to consume power
+	 */
+	SCI_PHY_SUB_AWAIT_SAS_POWER,
+
+	/**
+	 * Wait state for request to consume power
+	 */
+	SCI_PHY_SUB_AWAIT_SATA_POWER,
+
+	/**
+	 * Wait state for the SATA PHY notification
+	 */
+	SCI_PHY_SUB_AWAIT_SATA_PHY_EN,
+
+	/**
+	 * Wait for the SATA PHY speed notification
+	 */
+	SCI_PHY_SUB_AWAIT_SATA_SPEED_EN,
+
+	/**
+	 * Wait state for the SIGNATURE FIS unsolicited frame notification
+	 */
+	SCI_PHY_SUB_AWAIT_SIG_FIS_UF,
+
+	/**
+	 * Exit state for this state machine
+	 */
+	SCI_PHY_SUB_FINAL,
+
+	/**
+	 * This state indicates the the phy is now ready.  Thus, the user
+	 * is able to perform IO operations utilizing this phy as long as it
+	 * is currently part of a valid port.
+	 * This state is entered from the STARTING state.
+	 */
+	SCI_PHY_READY,
+
+	/**
+	 * This state indicates that the phy is in the process of being reset.
+	 * In this state no new IO operations are permitted on this phy.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PHY_RESETTING,
+
+	/**
+	 * Simply the final state for the base phy state machine.
+	 */
+	SCI_PHY_FINAL,
+};
+
+void sci_phy_construct(
+	struct isci_phy *iphy,
+	struct isci_port *iport,
+	u8 phy_index);
+
+struct isci_port *phy_get_non_dummy_port(struct isci_phy *iphy);
+
+void sci_phy_set_port(
+	struct isci_phy *iphy,
+	struct isci_port *iport);
+
+enum sci_status sci_phy_initialize(
+	struct isci_phy *iphy,
+	struct scu_transport_layer_registers __iomem *transport_layer_registers,
+	struct scu_link_layer_registers __iomem *link_layer_registers);
+
+enum sci_status sci_phy_start(
+	struct isci_phy *iphy);
+
+enum sci_status sci_phy_stop(
+	struct isci_phy *iphy);
+
+enum sci_status sci_phy_reset(
+	struct isci_phy *iphy);
+
+void sci_phy_resume(
+	struct isci_phy *iphy);
+
+void sci_phy_setup_transport(
+	struct isci_phy *iphy,
+	u32 device_id);
+
+enum sci_status sci_phy_event_handler(
+	struct isci_phy *iphy,
+	u32 event_code);
+
+enum sci_status sci_phy_frame_handler(
+	struct isci_phy *iphy,
+	u32 frame_index);
+
+enum sci_status sci_phy_consume_power_handler(
+	struct isci_phy *iphy);
+
+void sci_phy_get_sas_address(
+	struct isci_phy *iphy,
+	struct sci_sas_address *sas_address);
+
+void sci_phy_get_attached_sas_address(
+	struct isci_phy *iphy,
+	struct sci_sas_address *sas_address);
+
+struct sci_phy_proto;
+void sci_phy_get_protocols(
+	struct isci_phy *iphy,
+	struct sci_phy_proto *protocols);
+enum sas_linkrate sci_phy_linkrate(struct isci_phy *iphy);
+
+struct isci_host;
+void isci_phy_init(struct isci_phy *iphy, struct isci_host *ihost, int index);
+int isci_phy_control(struct asd_sas_phy *phy, enum phy_func func, void *buf);
+
+#endif /* !defined(_ISCI_PHY_H_) */

drivers/scsi/isci/port.c

@@ -0,0 +1,1757 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "isci.h"
+#include "port.h"
+#include "request.h"
+
+#define SCIC_SDS_PORT_HARD_RESET_TIMEOUT  (1000)
+#define SCU_DUMMY_INDEX    (0xFFFF)
+
+static void isci_port_change_state(struct isci_port *iport, enum isci_status status)
+{
+	unsigned long flags;
+
+	dev_dbg(&iport->isci_host->pdev->dev,
+		"%s: iport = %p, state = 0x%x\n",
+		__func__, iport, status);
+
+	/* XXX pointless lock */
+	spin_lock_irqsave(&iport->state_lock, flags);
+	iport->status = status;
+	spin_unlock_irqrestore(&iport->state_lock, flags);
+}
+
+static void sci_port_get_protocols(struct isci_port *iport, struct sci_phy_proto *proto)
+{
+	u8 index;
+
+	proto->all = 0;
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		struct isci_phy *iphy = iport->phy_table[index];
+
+		if (!iphy)
+			continue;
+		sci_phy_get_protocols(iphy, proto);
+	}
+}
+
+static u32 sci_port_get_phys(struct isci_port *iport)
+{
+	u32 index;
+	u32 mask;
+
+	mask = 0;
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		if (iport->phy_table[index])
+			mask |= (1 << index);
+
+	return mask;
+}
+
+/**
+ * sci_port_get_properties() - This method simply returns the properties
+ *    regarding the port, such as: physical index, protocols, sas address, etc.
+ * @port: this parameter specifies the port for which to retrieve the physical
+ *    index.
+ * @properties: This parameter specifies the properties structure into which to
+ *    copy the requested information.
+ *
+ * Indicate if the user specified a valid port. SCI_SUCCESS This value is
+ * returned if the specified port was valid. SCI_FAILURE_INVALID_PORT This
+ * value is returned if the specified port is not valid.  When this value is
+ * returned, no data is copied to the properties output parameter.
+ */
+static enum sci_status sci_port_get_properties(struct isci_port *iport,
+						struct sci_port_properties *prop)
+{
+	if (!iport || iport->logical_port_index == SCIC_SDS_DUMMY_PORT)
+		return SCI_FAILURE_INVALID_PORT;
+
+	prop->index = iport->logical_port_index;
+	prop->phy_mask = sci_port_get_phys(iport);
+	sci_port_get_sas_address(iport, &prop->local.sas_address);
+	sci_port_get_protocols(iport, &prop->local.protocols);
+	sci_port_get_attached_sas_address(iport, &prop->remote.sas_address);
+
+	return SCI_SUCCESS;
+}
+
+static void sci_port_bcn_enable(struct isci_port *iport)
+{
+	struct isci_phy *iphy;
+	u32 val;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(iport->phy_table); i++) {
+		iphy = iport->phy_table[i];
+		if (!iphy)
+			continue;
+		val = readl(&iphy->link_layer_registers->link_layer_control);
+		/* clear the bit by writing 1. */
+		writel(val, &iphy->link_layer_registers->link_layer_control);
+	}
+}
+
+/* called under sci_lock to stabilize phy:port associations */
+void isci_port_bcn_enable(struct isci_host *ihost, struct isci_port *iport)
+{
+	int i;
+
+	clear_bit(IPORT_BCN_BLOCKED, &iport->flags);
+	wake_up(&ihost->eventq);
+
+	if (!test_and_clear_bit(IPORT_BCN_PENDING, &iport->flags))
+		return;
+
+	for (i = 0; i < ARRAY_SIZE(iport->phy_table); i++) {
+		struct isci_phy *iphy = iport->phy_table[i];
+
+		if (!iphy)
+			continue;
+
+		ihost->sas_ha.notify_port_event(&iphy->sas_phy,
+						PORTE_BROADCAST_RCVD);
+		break;
+	}
+}
+
+static void isci_port_bc_change_received(struct isci_host *ihost,
+					 struct isci_port *iport,
+					 struct isci_phy *iphy)
+{
+	if (iport && test_bit(IPORT_BCN_BLOCKED, &iport->flags)) {
+		dev_dbg(&ihost->pdev->dev,
+			"%s: disabled BCN; isci_phy = %p, sas_phy = %p\n",
+			__func__, iphy, &iphy->sas_phy);
+		set_bit(IPORT_BCN_PENDING, &iport->flags);
+		atomic_inc(&iport->event);
+		wake_up(&ihost->eventq);
+	} else {
+		dev_dbg(&ihost->pdev->dev,
+			"%s: isci_phy = %p, sas_phy = %p\n",
+			__func__, iphy, &iphy->sas_phy);
+
+		ihost->sas_ha.notify_port_event(&iphy->sas_phy,
+						PORTE_BROADCAST_RCVD);
+	}
+	sci_port_bcn_enable(iport);
+}
+
+static void isci_port_link_up(struct isci_host *isci_host,
+			      struct isci_port *iport,
+			      struct isci_phy *iphy)
+{
+	unsigned long flags;
+	struct sci_port_properties properties;
+	unsigned long success = true;
+
+	BUG_ON(iphy->isci_port != NULL);
+
+	iphy->isci_port = iport;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n",
+		__func__, iport);
+
+	spin_lock_irqsave(&iphy->sas_phy.frame_rcvd_lock, flags);
+
+	isci_port_change_state(iphy->isci_port, isci_starting);
+
+	sci_port_get_properties(iport, &properties);
+
+	if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) {
+		u64 attached_sas_address;
+
+		iphy->sas_phy.oob_mode = SATA_OOB_MODE;
+		iphy->sas_phy.frame_rcvd_size = sizeof(struct dev_to_host_fis);
+
+		/*
+		 * For direct-attached SATA devices, the SCI core will
+		 * automagically assign a SAS address to the end device
+		 * for the purpose of creating a port. This SAS address
+		 * will not be the same as assigned to the PHY and needs
+		 * to be obtained from struct sci_port_properties properties.
+		 */
+		attached_sas_address = properties.remote.sas_address.high;
+		attached_sas_address <<= 32;
+		attached_sas_address |= properties.remote.sas_address.low;
+		swab64s(&attached_sas_address);
+
+		memcpy(&iphy->sas_phy.attached_sas_addr,
+		       &attached_sas_address, sizeof(attached_sas_address));
+	} else if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) {
+		iphy->sas_phy.oob_mode = SAS_OOB_MODE;
+		iphy->sas_phy.frame_rcvd_size = sizeof(struct sas_identify_frame);
+
+		/* Copy the attached SAS address from the IAF */
+		memcpy(iphy->sas_phy.attached_sas_addr,
+		       iphy->frame_rcvd.iaf.sas_addr, SAS_ADDR_SIZE);
+	} else {
+		dev_err(&isci_host->pdev->dev, "%s: unkown target\n", __func__);
+		success = false;
+	}
+
+	iphy->sas_phy.phy->negotiated_linkrate = sci_phy_linkrate(iphy);
+
+	spin_unlock_irqrestore(&iphy->sas_phy.frame_rcvd_lock, flags);
+
+	/* Notify libsas that we have an address frame, if indeed
+	 * we've found an SSP, SMP, or STP target */
+	if (success)
+		isci_host->sas_ha.notify_port_event(&iphy->sas_phy,
+						    PORTE_BYTES_DMAED);
+}
+
+
+/**
+ * isci_port_link_down() - This function is called by the sci core when a link
+ *    becomes inactive.
+ * @isci_host: This parameter specifies the isci host object.
+ * @phy: This parameter specifies the isci phy with the active link.
+ * @port: This parameter specifies the isci port with the active link.
+ *
+ */
+static void isci_port_link_down(struct isci_host *isci_host,
+				struct isci_phy *isci_phy,
+				struct isci_port *isci_port)
+{
+	struct isci_remote_device *isci_device;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n", __func__, isci_port);
+
+	if (isci_port) {
+
+		/* check to see if this is the last phy on this port. */
+		if (isci_phy->sas_phy.port &&
+		    isci_phy->sas_phy.port->num_phys == 1) {
+			atomic_inc(&isci_port->event);
+			isci_port_bcn_enable(isci_host, isci_port);
+
+			/* change the state for all devices on this port.  The
+			 * next task sent to this device will be returned as
+			 * SAS_TASK_UNDELIVERED, and the scsi mid layer will
+			 * remove the target
+			 */
+			list_for_each_entry(isci_device,
+					    &isci_port->remote_dev_list,
+					    node) {
+				dev_dbg(&isci_host->pdev->dev,
+					"%s: isci_device = %p\n",
+					__func__, isci_device);
+				set_bit(IDEV_GONE, &isci_device->flags);
+			}
+		}
+		isci_port_change_state(isci_port, isci_stopping);
+	}
+
+	/* Notify libsas of the borken link, this will trigger calls to our
+	 * isci_port_deformed and isci_dev_gone functions.
+	 */
+	sas_phy_disconnected(&isci_phy->sas_phy);
+	isci_host->sas_ha.notify_phy_event(&isci_phy->sas_phy,
+					   PHYE_LOSS_OF_SIGNAL);
+
+	isci_phy->isci_port = NULL;
+
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p - Done\n", __func__, isci_port);
+}
+
+
+/**
+ * isci_port_ready() - This function is called by the sci core when a link
+ *    becomes ready.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the sci port with the active link.
+ *
+ */
+static void isci_port_ready(struct isci_host *isci_host, struct isci_port *isci_port)
+{
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n", __func__, isci_port);
+
+	complete_all(&isci_port->start_complete);
+	isci_port_change_state(isci_port, isci_ready);
+	return;
+}
+
+/**
+ * isci_port_not_ready() - This function is called by the sci core when a link
+ *    is not ready. All remote devices on this link will be removed if they are
+ *    in the stopping state.
+ * @isci_host: This parameter specifies the isci host object.
+ * @port: This parameter specifies the sci port with the active link.
+ *
+ */
+static void isci_port_not_ready(struct isci_host *isci_host, struct isci_port *isci_port)
+{
+	dev_dbg(&isci_host->pdev->dev,
+		"%s: isci_port = %p\n", __func__, isci_port);
+}
+
+static void isci_port_stop_complete(struct isci_host *ihost,
+				    struct isci_port *iport,
+				    enum sci_status completion_status)
+{
+	dev_dbg(&ihost->pdev->dev, "Port stop complete\n");
+}
+
+/**
+ * isci_port_hard_reset_complete() - This function is called by the sci core
+ *    when the hard reset complete notification has been received.
+ * @port: This parameter specifies the sci port with the active link.
+ * @completion_status: This parameter specifies the core status for the reset
+ *    process.
+ *
+ */
+static void isci_port_hard_reset_complete(struct isci_port *isci_port,
+					  enum sci_status completion_status)
+{
+	dev_dbg(&isci_port->isci_host->pdev->dev,
+		"%s: isci_port = %p, completion_status=%x\n",
+		     __func__, isci_port, completion_status);
+
+	/* Save the status of the hard reset from the port. */
+	isci_port->hard_reset_status = completion_status;
+
+	complete_all(&isci_port->hard_reset_complete);
+}
+
+/* This method will return a true value if the specified phy can be assigned to
+ * this port The following is a list of phys for each port that are allowed: -
+ * Port 0 - 3 2 1 0 - Port 1 -     1 - Port 2 - 3 2 - Port 3 - 3 This method
+ * doesn't preclude all configurations.  It merely ensures that a phy is part
+ * of the allowable set of phy identifiers for that port.  For example, one
+ * could assign phy 3 to port 0 and no other phys.  Please refer to
+ * sci_port_is_phy_mask_valid() for information regarding whether the
+ * phy_mask for a port can be supported. bool true if this is a valid phy
+ * assignment for the port false if this is not a valid phy assignment for the
+ * port
+ */
+bool sci_port_is_valid_phy_assignment(struct isci_port *iport, u32 phy_index)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	struct sci_user_parameters *user = &ihost->user_parameters;
+
+	/* Initialize to invalid value. */
+	u32 existing_phy_index = SCI_MAX_PHYS;
+	u32 index;
+
+	if ((iport->physical_port_index == 1) && (phy_index != 1))
+		return false;
+
+	if (iport->physical_port_index == 3 && phy_index != 3)
+		return false;
+
+	if (iport->physical_port_index == 2 &&
+	    (phy_index == 0 || phy_index == 1))
+		return false;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		if (iport->phy_table[index] && index != phy_index)
+			existing_phy_index = index;
+
+	/* Ensure that all of the phys in the port are capable of
+	 * operating at the same maximum link rate.
+	 */
+	if (existing_phy_index < SCI_MAX_PHYS &&
+	    user->phys[phy_index].max_speed_generation !=
+	    user->phys[existing_phy_index].max_speed_generation)
+		return false;
+
+	return true;
+}
+
+/**
+ *
+ * @sci_port: This is the port object for which to determine if the phy mask
+ *    can be supported.
+ *
+ * This method will return a true value if the port's phy mask can be supported
+ * by the SCU. The following is a list of valid PHY mask configurations for
+ * each port: - Port 0 - [[3  2] 1] 0 - Port 1 -        [1] - Port 2 - [[3] 2]
+ * - Port 3 -  [3] This method returns a boolean indication specifying if the
+ * phy mask can be supported. true if this is a valid phy assignment for the
+ * port false if this is not a valid phy assignment for the port
+ */
+static bool sci_port_is_phy_mask_valid(
+	struct isci_port *iport,
+	u32 phy_mask)
+{
+	if (iport->physical_port_index == 0) {
+		if (((phy_mask & 0x0F) == 0x0F)
+		    || ((phy_mask & 0x03) == 0x03)
+		    || ((phy_mask & 0x01) == 0x01)
+		    || (phy_mask == 0))
+			return true;
+	} else if (iport->physical_port_index == 1) {
+		if (((phy_mask & 0x02) == 0x02)
+		    || (phy_mask == 0))
+			return true;
+	} else if (iport->physical_port_index == 2) {
+		if (((phy_mask & 0x0C) == 0x0C)
+		    || ((phy_mask & 0x04) == 0x04)
+		    || (phy_mask == 0))
+			return true;
+	} else if (iport->physical_port_index == 3) {
+		if (((phy_mask & 0x08) == 0x08)
+		    || (phy_mask == 0))
+			return true;
+	}
+
+	return false;
+}
+
+/*
+ * This method retrieves a currently active (i.e. connected) phy contained in
+ * the port.  Currently, the lowest order phy that is connected is returned.
+ * This method returns a pointer to a SCIS_SDS_PHY object. NULL This value is
+ * returned if there are no currently active (i.e. connected to a remote end
+ * point) phys contained in the port. All other values specify a struct sci_phy
+ * object that is active in the port.
+ */
+static struct isci_phy *sci_port_get_a_connected_phy(struct isci_port *iport)
+{
+	u32 index;
+	struct isci_phy *iphy;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		/* Ensure that the phy is both part of the port and currently
+		 * connected to the remote end-point.
+		 */
+		iphy = iport->phy_table[index];
+		if (iphy && sci_port_active_phy(iport, iphy))
+			return iphy;
+	}
+
+	return NULL;
+}
+
+static enum sci_status sci_port_set_phy(struct isci_port *iport, struct isci_phy *iphy)
+{
+	/* Check to see if we can add this phy to a port
+	 * that means that the phy is not part of a port and that the port does
+	 * not already have a phy assinged to the phy index.
+	 */
+	if (!iport->phy_table[iphy->phy_index] &&
+	    !phy_get_non_dummy_port(iphy) &&
+	    sci_port_is_valid_phy_assignment(iport, iphy->phy_index)) {
+		/* Phy is being added in the stopped state so we are in MPC mode
+		 * make logical port index = physical port index
+		 */
+		iport->logical_port_index = iport->physical_port_index;
+		iport->phy_table[iphy->phy_index] = iphy;
+		sci_phy_set_port(iphy, iport);
+
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE;
+}
+
+static enum sci_status sci_port_clear_phy(struct isci_port *iport, struct isci_phy *iphy)
+{
+	/* Make sure that this phy is part of this port */
+	if (iport->phy_table[iphy->phy_index] == iphy &&
+	    phy_get_non_dummy_port(iphy) == iport) {
+		struct isci_host *ihost = iport->owning_controller;
+
+		/* Yep it is assigned to this port so remove it */
+		sci_phy_set_port(iphy, &ihost->ports[SCI_MAX_PORTS]);
+		iport->phy_table[iphy->phy_index] = NULL;
+		return SCI_SUCCESS;
+	}
+
+	return SCI_FAILURE;
+}
+
+void sci_port_get_sas_address(struct isci_port *iport, struct sci_sas_address *sas)
+{
+	u32 index;
+
+	sas->high = 0;
+	sas->low  = 0;
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		if (iport->phy_table[index])
+			sci_phy_get_sas_address(iport->phy_table[index], sas);
+}
+
+void sci_port_get_attached_sas_address(struct isci_port *iport, struct sci_sas_address *sas)
+{
+	struct isci_phy *iphy;
+
+	/*
+	 * Ensure that the phy is both part of the port and currently
+	 * connected to the remote end-point.
+	 */
+	iphy = sci_port_get_a_connected_phy(iport);
+	if (iphy) {
+		if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) {
+			sci_phy_get_attached_sas_address(iphy, sas);
+		} else {
+			sci_phy_get_sas_address(iphy, sas);
+			sas->low += iphy->phy_index;
+		}
+	} else {
+		sas->high = 0;
+		sas->low  = 0;
+	}
+}
+
+/**
+ * sci_port_construct_dummy_rnc() - create dummy rnc for si workaround
+ *
+ * @sci_port: logical port on which we need to create the remote node context
+ * @rni: remote node index for this remote node context.
+ *
+ * This routine will construct a dummy remote node context data structure
+ * This structure will be posted to the hardware to work around a scheduler
+ * error in the hardware.
+ */
+static void sci_port_construct_dummy_rnc(struct isci_port *iport, u16 rni)
+{
+	union scu_remote_node_context *rnc;
+
+	rnc = &iport->owning_controller->remote_node_context_table[rni];
+
+	memset(rnc, 0, sizeof(union scu_remote_node_context));
+
+	rnc->ssp.remote_sas_address_hi = 0;
+	rnc->ssp.remote_sas_address_lo = 0;
+
+	rnc->ssp.remote_node_index = rni;
+	rnc->ssp.remote_node_port_width = 1;
+	rnc->ssp.logical_port_index = iport->physical_port_index;
+
+	rnc->ssp.nexus_loss_timer_enable = false;
+	rnc->ssp.check_bit = false;
+	rnc->ssp.is_valid = true;
+	rnc->ssp.is_remote_node_context = true;
+	rnc->ssp.function_number = 0;
+	rnc->ssp.arbitration_wait_time = 0;
+}
+
+/*
+ * construct a dummy task context data structure.  This
+ * structure will be posted to the hardwre to work around a scheduler error
+ * in the hardware.
+ */
+static void sci_port_construct_dummy_task(struct isci_port *iport, u16 tag)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	struct scu_task_context *task_context;
+
+	task_context = &ihost->task_context_table[ISCI_TAG_TCI(tag)];
+	memset(task_context, 0, sizeof(struct scu_task_context));
+
+	task_context->initiator_request = 1;
+	task_context->connection_rate = 1;
+	task_context->logical_port_index = iport->physical_port_index;
+	task_context->protocol_type = SCU_TASK_CONTEXT_PROTOCOL_SSP;
+	task_context->task_index = ISCI_TAG_TCI(tag);
+	task_context->valid = SCU_TASK_CONTEXT_VALID;
+	task_context->context_type = SCU_TASK_CONTEXT_TYPE;
+	task_context->remote_node_index = iport->reserved_rni;
+	task_context->do_not_dma_ssp_good_response = 1;
+	task_context->task_phase = 0x01;
+}
+
+static void sci_port_destroy_dummy_resources(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	if (iport->reserved_tag != SCI_CONTROLLER_INVALID_IO_TAG)
+		isci_free_tag(ihost, iport->reserved_tag);
+
+	if (iport->reserved_rni != SCU_DUMMY_INDEX)
+		sci_remote_node_table_release_remote_node_index(&ihost->available_remote_nodes,
+								     1, iport->reserved_rni);
+
+	iport->reserved_rni = SCU_DUMMY_INDEX;
+	iport->reserved_tag = SCI_CONTROLLER_INVALID_IO_TAG;
+}
+
+void sci_port_setup_transports(struct isci_port *iport, u32 device_id)
+{
+	u8 index;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if (iport->active_phy_mask & (1 << index))
+			sci_phy_setup_transport(iport->phy_table[index], device_id);
+	}
+}
+
+static void sci_port_activate_phy(struct isci_port *iport, struct isci_phy *iphy,
+				  bool do_notify_user)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA)
+		sci_phy_resume(iphy);
+
+	iport->active_phy_mask |= 1 << iphy->phy_index;
+
+	sci_controller_clear_invalid_phy(ihost, iphy);
+
+	if (do_notify_user == true)
+		isci_port_link_up(ihost, iport, iphy);
+}
+
+void sci_port_deactivate_phy(struct isci_port *iport, struct isci_phy *iphy,
+			     bool do_notify_user)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	iport->active_phy_mask &= ~(1 << iphy->phy_index);
+
+	iphy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN;
+
+	/* Re-assign the phy back to the LP as if it were a narrow port */
+	writel(iphy->phy_index,
+		&iport->port_pe_configuration_register[iphy->phy_index]);
+
+	if (do_notify_user == true)
+		isci_port_link_down(ihost, iphy, iport);
+}
+
+static void sci_port_invalid_link_up(struct isci_port *iport, struct isci_phy *iphy)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	/*
+	 * Check to see if we have alreay reported this link as bad and if
+	 * not go ahead and tell the SCI_USER that we have discovered an
+	 * invalid link.
+	 */
+	if ((ihost->invalid_phy_mask & (1 << iphy->phy_index)) == 0) {
+		ihost->invalid_phy_mask |= 1 << iphy->phy_index;
+		dev_warn(&ihost->pdev->dev, "Invalid link up!\n");
+	}
+}
+
+static bool is_port_ready_state(enum sci_port_states state)
+{
+	switch (state) {
+	case SCI_PORT_READY:
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+	case SCI_PORT_SUB_CONFIGURING:
+		return true;
+	default:
+		return false;
+	}
+}
+
+/* flag dummy rnc hanling when exiting a ready state */
+static void port_state_machine_change(struct isci_port *iport,
+				      enum sci_port_states state)
+{
+	struct sci_base_state_machine *sm = &iport->sm;
+	enum sci_port_states old_state = sm->current_state_id;
+
+	if (is_port_ready_state(old_state) && !is_port_ready_state(state))
+		iport->ready_exit = true;
+
+	sci_change_state(sm, state);
+	iport->ready_exit = false;
+}
+
+/**
+ * sci_port_general_link_up_handler - phy can be assigned to port?
+ * @sci_port: sci_port object for which has a phy that has gone link up.
+ * @sci_phy: This is the struct isci_phy object that has gone link up.
+ * @do_notify_user: This parameter specifies whether to inform the user (via
+ *    sci_port_link_up()) as to the fact that a new phy as become ready.
+ *
+ * Determine if this phy can be assigned to this
+ * port . If the phy is not a valid PHY for
+ * this port then the function will notify the user. A PHY can only be
+ * part of a port if it's attached SAS ADDRESS is the same as all other PHYs in
+ * the same port. none
+ */
+static void sci_port_general_link_up_handler(struct isci_port *iport,
+						  struct isci_phy *iphy,
+						  bool do_notify_user)
+{
+	struct sci_sas_address port_sas_address;
+	struct sci_sas_address phy_sas_address;
+
+	sci_port_get_attached_sas_address(iport, &port_sas_address);
+	sci_phy_get_attached_sas_address(iphy, &phy_sas_address);
+
+	/* If the SAS address of the new phy matches the SAS address of
+	 * other phys in the port OR this is the first phy in the port,
+	 * then activate the phy and allow it to be used for operations
+	 * in this port.
+	 */
+	if ((phy_sas_address.high == port_sas_address.high &&
+	     phy_sas_address.low  == port_sas_address.low) ||
+	    iport->active_phy_mask == 0) {
+		struct sci_base_state_machine *sm = &iport->sm;
+
+		sci_port_activate_phy(iport, iphy, do_notify_user);
+		if (sm->current_state_id == SCI_PORT_RESETTING)
+			port_state_machine_change(iport, SCI_PORT_READY);
+	} else
+		sci_port_invalid_link_up(iport, iphy);
+}
+
+
+
+/**
+ * This method returns false if the port only has a single phy object assigned.
+ *     If there are no phys or more than one phy then the method will return
+ *    true.
+ * @sci_port: The port for which the wide port condition is to be checked.
+ *
+ * bool true Is returned if this is a wide ported port. false Is returned if
+ * this is a narrow port.
+ */
+static bool sci_port_is_wide(struct isci_port *iport)
+{
+	u32 index;
+	u32 phy_count = 0;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if (iport->phy_table[index] != NULL) {
+			phy_count++;
+		}
+	}
+
+	return phy_count != 1;
+}
+
+/**
+ * This method is called by the PHY object when the link is detected. if the
+ *    port wants the PHY to continue on to the link up state then the port
+ *    layer must return true.  If the port object returns false the phy object
+ *    must halt its attempt to go link up.
+ * @sci_port: The port associated with the phy object.
+ * @sci_phy: The phy object that is trying to go link up.
+ *
+ * true if the phy object can continue to the link up condition. true Is
+ * returned if this phy can continue to the ready state. false Is returned if
+ * can not continue on to the ready state. This notification is in place for
+ * wide ports and direct attached phys.  Since there are no wide ported SATA
+ * devices this could become an invalid port configuration.
+ */
+bool sci_port_link_detected(
+	struct isci_port *iport,
+	struct isci_phy *iphy)
+{
+	if ((iport->logical_port_index != SCIC_SDS_DUMMY_PORT) &&
+	    (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) &&
+	    sci_port_is_wide(iport)) {
+		sci_port_invalid_link_up(iport, iphy);
+
+		return false;
+	}
+
+	return true;
+}
+
+static void port_timeout(unsigned long data)
+{
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct isci_port *iport = container_of(tmr, typeof(*iport), timer);
+	struct isci_host *ihost = iport->owning_controller;
+	unsigned long flags;
+	u32 current_state;
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	current_state = iport->sm.current_state_id;
+
+	if (current_state == SCI_PORT_RESETTING) {
+		/* if the port is still in the resetting state then the timeout
+		 * fired before the reset completed.
+		 */
+		port_state_machine_change(iport, SCI_PORT_FAILED);
+	} else if (current_state == SCI_PORT_STOPPED) {
+		/* if the port is stopped then the start request failed In this
+		 * case stay in the stopped state.
+		 */
+		dev_err(sciport_to_dev(iport),
+			"%s: SCIC Port 0x%p failed to stop before tiemout.\n",
+			__func__,
+			iport);
+	} else if (current_state == SCI_PORT_STOPPING) {
+		/* if the port is still stopping then the stop has not completed */
+		isci_port_stop_complete(iport->owning_controller,
+					iport,
+					SCI_FAILURE_TIMEOUT);
+	} else {
+		/* The port is in the ready state and we have a timer
+		 * reporting a timeout this should not happen.
+		 */
+		dev_err(sciport_to_dev(iport),
+			"%s: SCIC Port 0x%p is processing a timeout operation "
+			"in state %d.\n", __func__, iport, current_state);
+	}
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+/* --------------------------------------------------------------------------- */
+
+/**
+ * This function updates the hardwares VIIT entry for this port.
+ *
+ *
+ */
+static void sci_port_update_viit_entry(struct isci_port *iport)
+{
+	struct sci_sas_address sas_address;
+
+	sci_port_get_sas_address(iport, &sas_address);
+
+	writel(sas_address.high,
+		&iport->viit_registers->initiator_sas_address_hi);
+	writel(sas_address.low,
+		&iport->viit_registers->initiator_sas_address_lo);
+
+	/* This value get cleared just in case its not already cleared */
+	writel(0, &iport->viit_registers->reserved);
+
+	/* We are required to update the status register last */
+	writel(SCU_VIIT_ENTRY_ID_VIIT |
+	       SCU_VIIT_IPPT_INITIATOR |
+	       ((1 << iport->physical_port_index) << SCU_VIIT_ENTRY_LPVIE_SHIFT) |
+	       SCU_VIIT_STATUS_ALL_VALID,
+	       &iport->viit_registers->status);
+}
+
+enum sas_linkrate sci_port_get_max_allowed_speed(struct isci_port *iport)
+{
+	u16 index;
+	struct isci_phy *iphy;
+	enum sas_linkrate max_allowed_speed = SAS_LINK_RATE_6_0_GBPS;
+
+	/*
+	 * Loop through all of the phys in this port and find the phy with the
+	 * lowest maximum link rate. */
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		iphy = iport->phy_table[index];
+		if (iphy && sci_port_active_phy(iport, iphy) &&
+		    iphy->max_negotiated_speed < max_allowed_speed)
+			max_allowed_speed = iphy->max_negotiated_speed;
+	}
+
+	return max_allowed_speed;
+}
+
+static void sci_port_suspend_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value |= SCU_PTSxCR_GEN_BIT(SUSPEND);
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+/**
+ * sci_port_post_dummy_request() - post dummy/workaround request
+ * @sci_port: port to post task
+ *
+ * Prevent the hardware scheduler from posting new requests to the front
+ * of the scheduler queue causing a starvation problem for currently
+ * ongoing requests.
+ *
+ */
+static void sci_port_post_dummy_request(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u16 tag = iport->reserved_tag;
+	struct scu_task_context *tc;
+	u32 command;
+
+	tc = &ihost->task_context_table[ISCI_TAG_TCI(tag)];
+	tc->abort = 0;
+
+	command = SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC |
+		  iport->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
+		  ISCI_TAG_TCI(tag);
+
+	sci_controller_post_request(ihost, command);
+}
+
+/**
+ * This routine will abort the dummy request.  This will alow the hardware to
+ * power down parts of the silicon to save power.
+ *
+ * @sci_port: The port on which the task must be aborted.
+ *
+ */
+static void sci_port_abort_dummy_request(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u16 tag = iport->reserved_tag;
+	struct scu_task_context *tc;
+	u32 command;
+
+	tc = &ihost->task_context_table[ISCI_TAG_TCI(tag)];
+	tc->abort = 1;
+
+	command = SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT |
+		  iport->physical_port_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT |
+		  ISCI_TAG_TCI(tag);
+
+	sci_controller_post_request(ihost, command);
+}
+
+/**
+ *
+ * @sci_port: This is the struct isci_port object to resume.
+ *
+ * This method will resume the port task scheduler for this port object. none
+ */
+static void
+sci_port_resume_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value &= ~SCU_PTSxCR_GEN_BIT(SUSPEND);
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+static void sci_port_ready_substate_waiting_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_port_suspend_port_task_scheduler(iport);
+
+	iport->not_ready_reason = SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS;
+
+	if (iport->active_phy_mask != 0) {
+		/* At least one of the phys on the port is ready */
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_OPERATIONAL);
+	}
+}
+
+static void sci_port_ready_substate_operational_enter(struct sci_base_state_machine *sm)
+{
+	u32 index;
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+
+	isci_port_ready(ihost, iport);
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if (iport->phy_table[index]) {
+			writel(iport->physical_port_index,
+				&iport->port_pe_configuration_register[
+					iport->phy_table[index]->phy_index]);
+		}
+	}
+
+	sci_port_update_viit_entry(iport);
+
+	sci_port_resume_port_task_scheduler(iport);
+
+	/*
+	 * Post the dummy task for the port so the hardware can schedule
+	 * io correctly
+	 */
+	sci_port_post_dummy_request(iport);
+}
+
+static void sci_port_invalidate_dummy_remote_node(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u8 phys_index = iport->physical_port_index;
+	union scu_remote_node_context *rnc;
+	u16 rni = iport->reserved_rni;
+	u32 command;
+
+	rnc = &ihost->remote_node_context_table[rni];
+
+	rnc->ssp.is_valid = false;
+
+	/* ensure the preceding tc abort request has reached the
+	 * controller and give it ample time to act before posting the rnc
+	 * invalidate
+	 */
+	readl(&ihost->smu_registers->interrupt_status); /* flush */
+	udelay(10);
+
+	command = SCU_CONTEXT_COMMAND_POST_RNC_INVALIDATE |
+		  phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+	sci_controller_post_request(ihost, command);
+}
+
+/**
+ *
+ * @object: This is the object which is cast to a struct isci_port object.
+ *
+ * This method will perform the actions required by the struct isci_port on
+ * exiting the SCI_PORT_SUB_OPERATIONAL. This function reports
+ * the port not ready and suspends the port task scheduler. none
+ */
+static void sci_port_ready_substate_operational_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+
+	/*
+	 * Kill the dummy task for this port if it has not yet posted
+	 * the hardware will treat this as a NOP and just return abort
+	 * complete.
+	 */
+	sci_port_abort_dummy_request(iport);
+
+	isci_port_not_ready(ihost, iport);
+
+	if (iport->ready_exit)
+		sci_port_invalidate_dummy_remote_node(iport);
+}
+
+static void sci_port_ready_substate_configuring_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+
+	if (iport->active_phy_mask == 0) {
+		isci_port_not_ready(ihost, iport);
+
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_WAITING);
+	} else if (iport->started_request_count == 0)
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_OPERATIONAL);
+}
+
+static void sci_port_ready_substate_configuring_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_port_suspend_port_task_scheduler(iport);
+	if (iport->ready_exit)
+		sci_port_invalidate_dummy_remote_node(iport);
+}
+
+enum sci_status sci_port_start(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	enum sci_status status = SCI_SUCCESS;
+	enum sci_port_states state;
+	u32 phy_mask;
+
+	state = iport->sm.current_state_id;
+	if (state != SCI_PORT_STOPPED) {
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	if (iport->assigned_device_count > 0) {
+		/* TODO This is a start failure operation because
+		 * there are still devices assigned to this port.
+		 * There must be no devices assigned to a port on a
+		 * start operation.
+		 */
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+	}
+
+	if (iport->reserved_rni == SCU_DUMMY_INDEX) {
+		u16 rni = sci_remote_node_table_allocate_remote_node(
+				&ihost->available_remote_nodes, 1);
+
+		if (rni != SCU_DUMMY_INDEX)
+			sci_port_construct_dummy_rnc(iport, rni);
+		else
+			status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
+		iport->reserved_rni = rni;
+	}
+
+	if (iport->reserved_tag == SCI_CONTROLLER_INVALID_IO_TAG) {
+		u16 tag;
+
+		tag = isci_alloc_tag(ihost);
+		if (tag == SCI_CONTROLLER_INVALID_IO_TAG)
+			status = SCI_FAILURE_INSUFFICIENT_RESOURCES;
+		else
+			sci_port_construct_dummy_task(iport, tag);
+		iport->reserved_tag = tag;
+	}
+
+	if (status == SCI_SUCCESS) {
+		phy_mask = sci_port_get_phys(iport);
+
+		/*
+		 * There are one or more phys assigned to this port.  Make sure
+		 * the port's phy mask is in fact legal and supported by the
+		 * silicon.
+		 */
+		if (sci_port_is_phy_mask_valid(iport, phy_mask) == true) {
+			port_state_machine_change(iport,
+						  SCI_PORT_READY);
+
+			return SCI_SUCCESS;
+		}
+		status = SCI_FAILURE;
+	}
+
+	if (status != SCI_SUCCESS)
+		sci_port_destroy_dummy_resources(iport);
+
+	return status;
+}
+
+enum sci_status sci_port_stop(struct isci_port *iport)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_STOPPED:
+		return SCI_SUCCESS;
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+	case SCI_PORT_SUB_CONFIGURING:
+	case SCI_PORT_RESETTING:
+		port_state_machine_change(iport,
+					  SCI_PORT_STOPPING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+static enum sci_status sci_port_hard_reset(struct isci_port *iport, u32 timeout)
+{
+	enum sci_status status = SCI_FAILURE_INVALID_PHY;
+	struct isci_phy *iphy = NULL;
+	enum sci_port_states state;
+	u32 phy_index;
+
+	state = iport->sm.current_state_id;
+	if (state != SCI_PORT_SUB_OPERATIONAL) {
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+
+	/* Select a phy on which we can send the hard reset request. */
+	for (phy_index = 0; phy_index < SCI_MAX_PHYS && !iphy; phy_index++) {
+		iphy = iport->phy_table[phy_index];
+		if (iphy && !sci_port_active_phy(iport, iphy)) {
+			/*
+			 * We found a phy but it is not ready select
+			 * different phy
+			 */
+			iphy = NULL;
+		}
+	}
+
+	/* If we have a phy then go ahead and start the reset procedure */
+	if (!iphy)
+		return status;
+	status = sci_phy_reset(iphy);
+
+	if (status != SCI_SUCCESS)
+		return status;
+
+	sci_mod_timer(&iport->timer, timeout);
+	iport->not_ready_reason = SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED;
+
+	port_state_machine_change(iport, SCI_PORT_RESETTING);
+	return SCI_SUCCESS;
+}
+
+/**
+ * sci_port_add_phy() -
+ * @sci_port: This parameter specifies the port in which the phy will be added.
+ * @sci_phy: This parameter is the phy which is to be added to the port.
+ *
+ * This method will add a PHY to the selected port. This method returns an
+ * enum sci_status. SCI_SUCCESS the phy has been added to the port. Any other
+ * status is a failure to add the phy to the port.
+ */
+enum sci_status sci_port_add_phy(struct isci_port *iport,
+				      struct isci_phy *iphy)
+{
+	enum sci_status status;
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_STOPPED: {
+		struct sci_sas_address port_sas_address;
+
+		/* Read the port assigned SAS Address if there is one */
+		sci_port_get_sas_address(iport, &port_sas_address);
+
+		if (port_sas_address.high != 0 && port_sas_address.low != 0) {
+			struct sci_sas_address phy_sas_address;
+
+			/* Make sure that the PHY SAS Address matches the SAS Address
+			 * for this port
+			 */
+			sci_phy_get_sas_address(iphy, &phy_sas_address);
+
+			if (port_sas_address.high != phy_sas_address.high ||
+			    port_sas_address.low  != phy_sas_address.low)
+				return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+		return sci_port_set_phy(iport, iphy);
+	}
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+		status = sci_port_set_phy(iport, iphy);
+
+		if (status != SCI_SUCCESS)
+			return status;
+
+		sci_port_general_link_up_handler(iport, iphy, true);
+		iport->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
+		port_state_machine_change(iport, SCI_PORT_SUB_CONFIGURING);
+
+		return status;
+	case SCI_PORT_SUB_CONFIGURING:
+		status = sci_port_set_phy(iport, iphy);
+
+		if (status != SCI_SUCCESS)
+			return status;
+		sci_port_general_link_up_handler(iport, iphy, true);
+
+		/* Re-enter the configuring state since this may be the last phy in
+		 * the port.
+		 */
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_CONFIGURING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+/**
+ * sci_port_remove_phy() -
+ * @sci_port: This parameter specifies the port in which the phy will be added.
+ * @sci_phy: This parameter is the phy which is to be added to the port.
+ *
+ * This method will remove the PHY from the selected PORT. This method returns
+ * an enum sci_status. SCI_SUCCESS the phy has been removed from the port. Any
+ * other status is a failure to add the phy to the port.
+ */
+enum sci_status sci_port_remove_phy(struct isci_port *iport,
+					 struct isci_phy *iphy)
+{
+	enum sci_status status;
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+
+	switch (state) {
+	case SCI_PORT_STOPPED:
+		return sci_port_clear_phy(iport, iphy);
+	case SCI_PORT_SUB_OPERATIONAL:
+		status = sci_port_clear_phy(iport, iphy);
+		if (status != SCI_SUCCESS)
+			return status;
+
+		sci_port_deactivate_phy(iport, iphy, true);
+		iport->not_ready_reason = SCIC_PORT_NOT_READY_RECONFIGURING;
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_CONFIGURING);
+		return SCI_SUCCESS;
+	case SCI_PORT_SUB_CONFIGURING:
+		status = sci_port_clear_phy(iport, iphy);
+
+		if (status != SCI_SUCCESS)
+			return status;
+		sci_port_deactivate_phy(iport, iphy, true);
+
+		/* Re-enter the configuring state since this may be the last phy in
+		 * the port
+		 */
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_CONFIGURING);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_link_up(struct isci_port *iport,
+				      struct isci_phy *iphy)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_SUB_WAITING:
+		/* Since this is the first phy going link up for the port we
+		 * can just enable it and continue
+		 */
+		sci_port_activate_phy(iport, iphy, true);
+
+		port_state_machine_change(iport,
+					  SCI_PORT_SUB_OPERATIONAL);
+		return SCI_SUCCESS;
+	case SCI_PORT_SUB_OPERATIONAL:
+		sci_port_general_link_up_handler(iport, iphy, true);
+		return SCI_SUCCESS;
+	case SCI_PORT_RESETTING:
+		/* TODO We should  make  sure  that  the phy  that  has gone
+		 * link up is the same one on which we sent the reset.  It is
+		 * possible that the phy on which we sent  the reset is not the
+		 * one that has  gone  link up  and we  want to make sure that
+		 * phy being reset  comes  back.  Consider the case where a
+		 * reset is sent but before the hardware processes the reset it
+		 * get a link up on  the  port because of a hot plug event.
+		 * because  of  the reset request this phy will go link down
+		 * almost immediately.
+		 */
+
+		/* In the resetting state we don't notify the user regarding
+		 * link up and link down notifications.
+		 */
+		sci_port_general_link_up_handler(iport, iphy, false);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_link_down(struct isci_port *iport,
+					struct isci_phy *iphy)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_SUB_OPERATIONAL:
+		sci_port_deactivate_phy(iport, iphy, true);
+
+		/* If there are no active phys left in the port, then
+		 * transition the port to the WAITING state until such time
+		 * as a phy goes link up
+		 */
+		if (iport->active_phy_mask == 0)
+			port_state_machine_change(iport,
+						  SCI_PORT_SUB_WAITING);
+		return SCI_SUCCESS;
+	case SCI_PORT_RESETTING:
+		/* In the resetting state we don't notify the user regarding
+		 * link up and link down notifications. */
+		sci_port_deactivate_phy(iport, iphy, false);
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_start_io(struct isci_port *iport,
+				  struct isci_remote_device *idev,
+				  struct isci_request *ireq)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_SUB_WAITING:
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_PORT_SUB_OPERATIONAL:
+		iport->started_request_count++;
+		return SCI_SUCCESS;
+	default:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	}
+}
+
+enum sci_status sci_port_complete_io(struct isci_port *iport,
+				     struct isci_remote_device *idev,
+				     struct isci_request *ireq)
+{
+	enum sci_port_states state;
+
+	state = iport->sm.current_state_id;
+	switch (state) {
+	case SCI_PORT_STOPPED:
+		dev_warn(sciport_to_dev(iport),
+			 "%s: in wrong state: %d\n", __func__, state);
+		return SCI_FAILURE_INVALID_STATE;
+	case SCI_PORT_STOPPING:
+		sci_port_decrement_request_count(iport);
+
+		if (iport->started_request_count == 0)
+			port_state_machine_change(iport,
+						  SCI_PORT_STOPPED);
+		break;
+	case SCI_PORT_READY:
+	case SCI_PORT_RESETTING:
+	case SCI_PORT_FAILED:
+	case SCI_PORT_SUB_WAITING:
+	case SCI_PORT_SUB_OPERATIONAL:
+		sci_port_decrement_request_count(iport);
+		break;
+	case SCI_PORT_SUB_CONFIGURING:
+		sci_port_decrement_request_count(iport);
+		if (iport->started_request_count == 0) {
+			port_state_machine_change(iport,
+						  SCI_PORT_SUB_OPERATIONAL);
+		}
+		break;
+	}
+	return SCI_SUCCESS;
+}
+
+static void sci_port_enable_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	 /* enable the port task scheduler in a suspended state */
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value |= SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND);
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+static void sci_port_disable_port_task_scheduler(struct isci_port *iport)
+{
+	u32 pts_control_value;
+
+	pts_control_value = readl(&iport->port_task_scheduler_registers->control);
+	pts_control_value &=
+		~(SCU_PTSxCR_GEN_BIT(ENABLE) | SCU_PTSxCR_GEN_BIT(SUSPEND));
+	writel(pts_control_value, &iport->port_task_scheduler_registers->control);
+}
+
+static void sci_port_post_dummy_remote_node(struct isci_port *iport)
+{
+	struct isci_host *ihost = iport->owning_controller;
+	u8 phys_index = iport->physical_port_index;
+	union scu_remote_node_context *rnc;
+	u16 rni = iport->reserved_rni;
+	u32 command;
+
+	rnc = &ihost->remote_node_context_table[rni];
+	rnc->ssp.is_valid = true;
+
+	command = SCU_CONTEXT_COMMAND_POST_RNC_32 |
+		  phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+	sci_controller_post_request(ihost, command);
+
+	/* ensure hardware has seen the post rnc command and give it
+	 * ample time to act before sending the suspend
+	 */
+	readl(&ihost->smu_registers->interrupt_status); /* flush */
+	udelay(10);
+
+	command = SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX |
+		  phys_index << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT | rni;
+
+	sci_controller_post_request(ihost, command);
+}
+
+static void sci_port_stopped_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	if (iport->sm.previous_state_id == SCI_PORT_STOPPING) {
+		/*
+		 * If we enter this state becasuse of a request to stop
+		 * the port then we want to disable the hardwares port
+		 * task scheduler. */
+		sci_port_disable_port_task_scheduler(iport);
+	}
+}
+
+static void sci_port_stopped_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	/* Enable and suspend the port task scheduler */
+	sci_port_enable_port_task_scheduler(iport);
+}
+
+static void sci_port_ready_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+	struct isci_host *ihost = iport->owning_controller;
+	u32 prev_state;
+
+	prev_state = iport->sm.previous_state_id;
+	if (prev_state  == SCI_PORT_RESETTING)
+		isci_port_hard_reset_complete(iport, SCI_SUCCESS);
+	else
+		isci_port_not_ready(ihost, iport);
+
+	/* Post and suspend the dummy remote node context for this port. */
+	sci_port_post_dummy_remote_node(iport);
+
+	/* Start the ready substate machine */
+	port_state_machine_change(iport,
+				  SCI_PORT_SUB_WAITING);
+}
+
+static void sci_port_resetting_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_del_timer(&iport->timer);
+}
+
+static void sci_port_stopping_state_exit(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	sci_del_timer(&iport->timer);
+
+	sci_port_destroy_dummy_resources(iport);
+}
+
+static void sci_port_failed_state_enter(struct sci_base_state_machine *sm)
+{
+	struct isci_port *iport = container_of(sm, typeof(*iport), sm);
+
+	isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT);
+}
+
+/* --------------------------------------------------------------------------- */
+
+static const struct sci_base_state sci_port_state_table[] = {
+	[SCI_PORT_STOPPED] = {
+		.enter_state = sci_port_stopped_state_enter,
+		.exit_state  = sci_port_stopped_state_exit
+	},
+	[SCI_PORT_STOPPING] = {
+		.exit_state  = sci_port_stopping_state_exit
+	},
+	[SCI_PORT_READY] = {
+		.enter_state = sci_port_ready_state_enter,
+	},
+	[SCI_PORT_SUB_WAITING] = {
+		.enter_state = sci_port_ready_substate_waiting_enter,
+	},
+	[SCI_PORT_SUB_OPERATIONAL] = {
+		.enter_state = sci_port_ready_substate_operational_enter,
+		.exit_state  = sci_port_ready_substate_operational_exit
+	},
+	[SCI_PORT_SUB_CONFIGURING] = {
+		.enter_state = sci_port_ready_substate_configuring_enter,
+		.exit_state  = sci_port_ready_substate_configuring_exit
+	},
+	[SCI_PORT_RESETTING] = {
+		.exit_state  = sci_port_resetting_state_exit
+	},
+	[SCI_PORT_FAILED] = {
+		.enter_state = sci_port_failed_state_enter,
+	}
+};
+
+void sci_port_construct(struct isci_port *iport, u8 index,
+			     struct isci_host *ihost)
+{
+	sci_init_sm(&iport->sm, sci_port_state_table, SCI_PORT_STOPPED);
+
+	iport->logical_port_index  = SCIC_SDS_DUMMY_PORT;
+	iport->physical_port_index = index;
+	iport->active_phy_mask     = 0;
+	iport->ready_exit	      = false;
+
+	iport->owning_controller = ihost;
+
+	iport->started_request_count = 0;
+	iport->assigned_device_count = 0;
+
+	iport->reserved_rni = SCU_DUMMY_INDEX;
+	iport->reserved_tag = SCI_CONTROLLER_INVALID_IO_TAG;
+
+	sci_init_timer(&iport->timer, port_timeout);
+
+	iport->port_task_scheduler_registers = NULL;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++)
+		iport->phy_table[index] = NULL;
+}
+
+void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index)
+{
+	INIT_LIST_HEAD(&iport->remote_dev_list);
+	INIT_LIST_HEAD(&iport->domain_dev_list);
+	spin_lock_init(&iport->state_lock);
+	init_completion(&iport->start_complete);
+	iport->isci_host = ihost;
+	isci_port_change_state(iport, isci_freed);
+	atomic_set(&iport->event, 0);
+}
+
+/**
+ * isci_port_get_state() - This function gets the status of the port object.
+ * @isci_port: This parameter points to the isci_port object
+ *
+ * status of the object as a isci_status enum.
+ */
+enum isci_status isci_port_get_state(
+	struct isci_port *isci_port)
+{
+	return isci_port->status;
+}
+
+void sci_port_broadcast_change_received(struct isci_port *iport, struct isci_phy *iphy)
+{
+	struct isci_host *ihost = iport->owning_controller;
+
+	/* notify the user. */
+	isci_port_bc_change_received(ihost, iport, iphy);
+}
+
+int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
+				 struct isci_phy *iphy)
+{
+	unsigned long flags;
+	enum sci_status status;
+	int idx, ret = TMF_RESP_FUNC_COMPLETE;
+
+	dev_dbg(&ihost->pdev->dev, "%s: iport = %p\n",
+		__func__, iport);
+
+	init_completion(&iport->hard_reset_complete);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	#define ISCI_PORT_RESET_TIMEOUT SCIC_SDS_SIGNATURE_FIS_TIMEOUT
+	status = sci_port_hard_reset(iport, ISCI_PORT_RESET_TIMEOUT);
+
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+
+	if (status == SCI_SUCCESS) {
+		wait_for_completion(&iport->hard_reset_complete);
+
+		dev_dbg(&ihost->pdev->dev,
+			"%s: iport = %p; hard reset completion\n",
+			__func__, iport);
+
+		if (iport->hard_reset_status != SCI_SUCCESS)
+			ret = TMF_RESP_FUNC_FAILED;
+	} else {
+		ret = TMF_RESP_FUNC_FAILED;
+
+		dev_err(&ihost->pdev->dev,
+			"%s: iport = %p; sci_port_hard_reset call"
+			" failed 0x%x\n",
+			__func__, iport, status);
+
+	}
+
+	/* If the hard reset for the port has failed, consider this
+	 * the same as link failures on all phys in the port.
+	 */
+	if (ret != TMF_RESP_FUNC_COMPLETE) {
+
+		dev_err(&ihost->pdev->dev,
+			"%s: iport = %p; hard reset failed "
+			"(0x%x) - driving explicit link fail for all phys\n",
+			__func__, iport, iport->hard_reset_status);
+
+		/* Down all phys in the port. */
+		spin_lock_irqsave(&ihost->scic_lock, flags);
+		for (idx = 0; idx < SCI_MAX_PHYS; ++idx) {
+			struct isci_phy *iphy = iport->phy_table[idx];
+
+			if (!iphy)
+				continue;
+			sci_phy_stop(iphy);
+			sci_phy_start(iphy);
+		}
+		spin_unlock_irqrestore(&ihost->scic_lock, flags);
+	}
+	return ret;
+}
+
+/**
+ * isci_port_deformed() - This function is called by libsas when a port becomes
+ *    inactive.
+ * @phy: This parameter specifies the libsas phy with the inactive port.
+ *
+ */
+void isci_port_deformed(struct asd_sas_phy *phy)
+{
+	pr_debug("%s: sas_phy = %p\n", __func__, phy);
+}
+
+/**
+ * isci_port_formed() - This function is called by libsas when a port becomes
+ *    active.
+ * @phy: This parameter specifies the libsas phy with the active port.
+ *
+ */
+void isci_port_formed(struct asd_sas_phy *phy)
+{
+	pr_debug("%s: sas_phy = %p, sas_port = %p\n", __func__, phy, phy->port);
+}

drivers/scsi/isci/port.h

@@ -0,0 +1,306 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ISCI_PORT_H_
+#define _ISCI_PORT_H_
+
+#include <scsi/libsas.h>
+#include "isci.h"
+#include "sas.h"
+#include "phy.h"
+
+#define SCIC_SDS_DUMMY_PORT   0xFF
+
+struct isci_phy;
+struct isci_host;
+
+enum isci_status {
+	isci_freed        = 0x00,
+	isci_starting     = 0x01,
+	isci_ready        = 0x02,
+	isci_ready_for_io = 0x03,
+	isci_stopping     = 0x04,
+	isci_stopped      = 0x05,
+};
+
+/**
+ * struct isci_port - isci direct attached sas port object
+ * @event: counts bcns and port stop events (for bcn filtering)
+ * @ready_exit: several states constitute 'ready'. When exiting ready we
+ *              need to take extra port-teardown actions that are
+ *              skipped when exiting to another 'ready' state.
+ * @logical_port_index: software port index
+ * @physical_port_index: hardware port index
+ * @active_phy_mask: identifies phy members
+ * @reserved_tag:
+ * @reserved_rni: reserver for port task scheduler workaround
+ * @started_request_count: reference count for outstanding commands
+ * @not_ready_reason: set during state transitions and notified
+ * @timer: timeout start/stop operations
+ */
+struct isci_port {
+	enum isci_status status;
+	#define IPORT_BCN_BLOCKED 0
+	#define IPORT_BCN_PENDING 1
+	unsigned long flags;
+	atomic_t event;
+	struct isci_host *isci_host;
+	struct asd_sas_port sas_port;
+	struct list_head remote_dev_list;
+	spinlock_t state_lock;
+	struct list_head domain_dev_list;
+	struct completion start_complete;
+	struct completion hard_reset_complete;
+	enum sci_status hard_reset_status;
+	struct sci_base_state_machine sm;
+	bool ready_exit;
+	u8 logical_port_index;
+	u8 physical_port_index;
+	u8 active_phy_mask;
+	u16 reserved_rni;
+	u16 reserved_tag;
+	u32 started_request_count;
+	u32 assigned_device_count;
+	u32 not_ready_reason;
+	struct isci_phy *phy_table[SCI_MAX_PHYS];
+	struct isci_host *owning_controller;
+	struct sci_timer timer;
+	struct scu_port_task_scheduler_registers __iomem *port_task_scheduler_registers;
+	/* XXX rework: only one register, no need to replicate per-port */
+	u32 __iomem *port_pe_configuration_register;
+	struct scu_viit_entry __iomem *viit_registers;
+};
+
+enum sci_port_not_ready_reason_code {
+	SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS,
+	SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED,
+	SCIC_PORT_NOT_READY_INVALID_PORT_CONFIGURATION,
+	SCIC_PORT_NOT_READY_RECONFIGURING,
+
+	SCIC_PORT_NOT_READY_REASON_CODE_MAX
+};
+
+struct sci_port_end_point_properties {
+	struct sci_sas_address sas_address;
+	struct sci_phy_proto protocols;
+};
+
+struct sci_port_properties {
+	u32 index;
+	struct sci_port_end_point_properties local;
+	struct sci_port_end_point_properties remote;
+	u32 phy_mask;
+};
+
+/**
+ * enum sci_port_states - This enumeration depicts all the states for the
+ *    common port state machine.
+ *
+ *
+ */
+enum sci_port_states {
+	/**
+	 * This state indicates that the port has successfully been stopped.
+	 * In this state no new IO operations are permitted.
+	 * This state is entered from the STOPPING state.
+	 */
+	SCI_PORT_STOPPED,
+
+	/**
+	 * This state indicates that the port is in the process of stopping.
+	 * In this state no new IO operations are permitted, but existing IO
+	 * operations are allowed to complete.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PORT_STOPPING,
+
+	/**
+	 * This state indicates the port is now ready.  Thus, the user is
+	 * able to perform IO operations on this port.
+	 * This state is entered from the STARTING state.
+	 */
+	SCI_PORT_READY,
+
+	/**
+	 * The substate where the port is started and ready but has no
+	 * active phys.
+	 */
+	SCI_PORT_SUB_WAITING,
+
+	/**
+	 * The substate where the port is started and ready and there is
+	 * at least one phy operational.
+	 */
+	SCI_PORT_SUB_OPERATIONAL,
+
+	/**
+	 * The substate where the port is started and there was an
+	 * add/remove phy event.  This state is only used in Automatic
+	 * Port Configuration Mode (APC)
+	 */
+	SCI_PORT_SUB_CONFIGURING,
+
+	/**
+	 * This state indicates the port is in the process of performing a hard
+	 * reset.  Thus, the user is unable to perform IO operations on this
+	 * port.
+	 * This state is entered from the READY state.
+	 */
+	SCI_PORT_RESETTING,
+
+	/**
+	 * This state indicates the port has failed a reset request.  This state
+	 * is entered when a port reset request times out.
+	 * This state is entered from the RESETTING state.
+	 */
+	SCI_PORT_FAILED,
+
+
+};
+
+static inline void sci_port_decrement_request_count(struct isci_port *iport)
+{
+	if (WARN_ONCE(iport->started_request_count == 0,
+		       "%s: tried to decrement started_request_count past 0!?",
+			__func__))
+		/* pass */;
+	else
+		iport->started_request_count--;
+}
+
+#define sci_port_active_phy(port, phy) \
+	(((port)->active_phy_mask & (1 << (phy)->phy_index)) != 0)
+
+void sci_port_construct(
+	struct isci_port *iport,
+	u8 port_index,
+	struct isci_host *ihost);
+
+enum sci_status sci_port_start(struct isci_port *iport);
+enum sci_status sci_port_stop(struct isci_port *iport);
+
+enum sci_status sci_port_add_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+enum sci_status sci_port_remove_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+void sci_port_setup_transports(
+	struct isci_port *iport,
+	u32 device_id);
+
+void isci_port_bcn_enable(struct isci_host *, struct isci_port *);
+
+void sci_port_deactivate_phy(
+	struct isci_port *iport,
+	struct isci_phy *iphy,
+	bool do_notify_user);
+
+bool sci_port_link_detected(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+enum sci_status sci_port_link_up(struct isci_port *iport,
+				      struct isci_phy *iphy);
+enum sci_status sci_port_link_down(struct isci_port *iport,
+					struct isci_phy *iphy);
+
+struct isci_request;
+struct isci_remote_device;
+enum sci_status sci_port_start_io(
+	struct isci_port *iport,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sci_status sci_port_complete_io(
+	struct isci_port *iport,
+	struct isci_remote_device *idev,
+	struct isci_request *ireq);
+
+enum sas_linkrate sci_port_get_max_allowed_speed(
+	struct isci_port *iport);
+
+void sci_port_broadcast_change_received(
+	struct isci_port *iport,
+	struct isci_phy *iphy);
+
+bool sci_port_is_valid_phy_assignment(
+	struct isci_port *iport,
+	u32 phy_index);
+
+void sci_port_get_sas_address(
+	struct isci_port *iport,
+	struct sci_sas_address *sas_address);
+
+void sci_port_get_attached_sas_address(
+	struct isci_port *iport,
+	struct sci_sas_address *sas_address);
+
+enum isci_status isci_port_get_state(
+	struct isci_port *isci_port);
+
+void isci_port_formed(struct asd_sas_phy *);
+void isci_port_deformed(struct asd_sas_phy *);
+
+void isci_port_init(
+	struct isci_port *port,
+	struct isci_host *host,
+	int index);
+
+int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
+				 struct isci_phy *iphy);
+#endif /* !defined(_ISCI_PORT_H_) */

drivers/scsi/isci/port_config.c

@@ -0,0 +1,754 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "host.h"
+
+#define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT    (10)
+#define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT    (10)
+#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION  (100)
+
+enum SCIC_SDS_APC_ACTIVITY {
+	SCIC_SDS_APC_SKIP_PHY,
+	SCIC_SDS_APC_ADD_PHY,
+	SCIC_SDS_APC_START_TIMER,
+
+	SCIC_SDS_APC_ACTIVITY_MAX
+};
+
+/*
+ * ******************************************************************************
+ * General port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ * @address_one: A SAS Address to be compared.
+ * @address_two: A SAS Address to be compared.
+ *
+ * Compare the two SAS Address and if SAS Address One is greater than SAS
+ * Address Two then return > 0 else if SAS Address One is less than SAS Address
+ * Two return < 0 Otherwise they are the same return 0 A signed value of x > 0
+ * > y where x is returned for Address One > Address Two y is returned for
+ * Address One < Address Two 0 is returned ofr Address One = Address Two
+ */
+static s32 sci_sas_address_compare(
+	struct sci_sas_address address_one,
+	struct sci_sas_address address_two)
+{
+	if (address_one.high > address_two.high) {
+		return 1;
+	} else if (address_one.high < address_two.high) {
+		return -1;
+	} else if (address_one.low > address_two.low) {
+		return 1;
+	} else if (address_one.low < address_two.low) {
+		return -1;
+	}
+
+	/* The two SAS Address must be identical */
+	return 0;
+}
+
+/**
+ *
+ * @controller: The controller object used for the port search.
+ * @phy: The phy object to match.
+ *
+ * This routine will find a matching port for the phy.  This means that the
+ * port and phy both have the same broadcast sas address and same received sas
+ * address. The port address or the NULL if there is no matching
+ * port. port address if the port can be found to match the phy.
+ * NULL if there is no matching port for the phy.
+ */
+static struct isci_port *sci_port_configuration_agent_find_port(
+	struct isci_host *ihost,
+	struct isci_phy *iphy)
+{
+	u8 i;
+	struct sci_sas_address port_sas_address;
+	struct sci_sas_address port_attached_device_address;
+	struct sci_sas_address phy_sas_address;
+	struct sci_sas_address phy_attached_device_address;
+
+	/*
+	 * Since this phy can be a member of a wide port check to see if one or
+	 * more phys match the sent and received SAS address as this phy in which
+	 * case it should participate in the same port.
+	 */
+	sci_phy_get_sas_address(iphy, &phy_sas_address);
+	sci_phy_get_attached_sas_address(iphy, &phy_attached_device_address);
+
+	for (i = 0; i < ihost->logical_port_entries; i++) {
+		struct isci_port *iport = &ihost->ports[i];
+
+		sci_port_get_sas_address(iport, &port_sas_address);
+		sci_port_get_attached_sas_address(iport, &port_attached_device_address);
+
+		if (sci_sas_address_compare(port_sas_address, phy_sas_address) == 0 &&
+		    sci_sas_address_compare(port_attached_device_address, phy_attached_device_address) == 0)
+			return iport;
+	}
+
+	return NULL;
+}
+
+/**
+ *
+ * @controller: This is the controller object that contains the port agent
+ * @port_agent: This is the port configruation agent for the controller.
+ *
+ * This routine will validate the port configuration is correct for the SCU
+ * hardware.  The SCU hardware allows for port configurations as follows. LP0
+ * -> (PE0), (PE0, PE1), (PE0, PE1, PE2, PE3) LP1 -> (PE1) LP2 -> (PE2), (PE2,
+ * PE3) LP3 -> (PE3) enum sci_status SCI_SUCCESS the port configuration is valid for
+ * this port configuration agent. SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION
+ * the port configuration is not valid for this port configuration agent.
+ */
+static enum sci_status sci_port_configuration_agent_validate_ports(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent)
+{
+	struct sci_sas_address first_address;
+	struct sci_sas_address second_address;
+
+	/*
+	 * Sanity check the max ranges for all the phys the max index
+	 * is always equal to the port range index */
+	if (port_agent->phy_valid_port_range[0].max_index != 0 ||
+	    port_agent->phy_valid_port_range[1].max_index != 1 ||
+	    port_agent->phy_valid_port_range[2].max_index != 2 ||
+	    port_agent->phy_valid_port_range[3].max_index != 3)
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+
+	/*
+	 * This is a request to configure a single x4 port or at least attempt
+	 * to make all the phys into a single port */
+	if (port_agent->phy_valid_port_range[0].min_index == 0 &&
+	    port_agent->phy_valid_port_range[1].min_index == 0 &&
+	    port_agent->phy_valid_port_range[2].min_index == 0 &&
+	    port_agent->phy_valid_port_range[3].min_index == 0)
+		return SCI_SUCCESS;
+
+	/*
+	 * This is a degenerate case where phy 1 and phy 2 are assigned
+	 * to the same port this is explicitly disallowed by the hardware
+	 * unless they are part of the same x4 port and this condition was
+	 * already checked above. */
+	if (port_agent->phy_valid_port_range[2].min_index == 1) {
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+	}
+
+	/*
+	 * PE0 and PE3 can never have the same SAS Address unless they
+	 * are part of the same x4 wide port and we have already checked
+	 * for this condition. */
+	sci_phy_get_sas_address(&ihost->phys[0], &first_address);
+	sci_phy_get_sas_address(&ihost->phys[3], &second_address);
+
+	if (sci_sas_address_compare(first_address, second_address) == 0) {
+		return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+	}
+
+	/*
+	 * PE0 and PE1 are configured into a 2x1 ports make sure that the
+	 * SAS Address for PE0 and PE2 are different since they can not be
+	 * part of the same port. */
+	if (port_agent->phy_valid_port_range[0].min_index == 0 &&
+	    port_agent->phy_valid_port_range[1].min_index == 1) {
+		sci_phy_get_sas_address(&ihost->phys[0], &first_address);
+		sci_phy_get_sas_address(&ihost->phys[2], &second_address);
+
+		if (sci_sas_address_compare(first_address, second_address) == 0) {
+			return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+	}
+
+	/*
+	 * PE2 and PE3 are configured into a 2x1 ports make sure that the
+	 * SAS Address for PE1 and PE3 are different since they can not be
+	 * part of the same port. */
+	if (port_agent->phy_valid_port_range[2].min_index == 2 &&
+	    port_agent->phy_valid_port_range[3].min_index == 3) {
+		sci_phy_get_sas_address(&ihost->phys[1], &first_address);
+		sci_phy_get_sas_address(&ihost->phys[3], &second_address);
+
+		if (sci_sas_address_compare(first_address, second_address) == 0) {
+			return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+	}
+
+	return SCI_SUCCESS;
+}
+
+/*
+ * ******************************************************************************
+ * Manual port configuration agent routines
+ * ****************************************************************************** */
+
+/* verify all of the phys in the same port are using the same SAS address */
+static enum sci_status
+sci_mpc_agent_validate_phy_configuration(struct isci_host *ihost,
+					      struct sci_port_configuration_agent *port_agent)
+{
+	u32 phy_mask;
+	u32 assigned_phy_mask;
+	struct sci_sas_address sas_address;
+	struct sci_sas_address phy_assigned_address;
+	u8 port_index;
+	u8 phy_index;
+
+	assigned_phy_mask = 0;
+	sas_address.high = 0;
+	sas_address.low = 0;
+
+	for (port_index = 0; port_index < SCI_MAX_PORTS; port_index++) {
+		phy_mask = ihost->oem_parameters.ports[port_index].phy_mask;
+
+		if (!phy_mask)
+			continue;
+		/*
+		 * Make sure that one or more of the phys were not already assinged to
+		 * a different port. */
+		if ((phy_mask & ~assigned_phy_mask) == 0) {
+			return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+		}
+
+		/* Find the starting phy index for this round through the loop */
+		for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++) {
+			if ((phy_mask & (1 << phy_index)) == 0)
+				continue;
+			sci_phy_get_sas_address(&ihost->phys[phy_index],
+						     &sas_address);
+
+			/*
+			 * The phy_index can be used as the starting point for the
+			 * port range since the hardware starts all logical ports
+			 * the same as the PE index. */
+			port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+			port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+
+			if (phy_index != port_index) {
+				return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+			}
+
+			break;
+		}
+
+		/*
+		 * See how many additional phys are being added to this logical port.
+		 * Note: We have not moved the current phy_index so we will actually
+		 *       compare the startting phy with itself.
+		 *       This is expected and required to add the phy to the port. */
+		while (phy_index < SCI_MAX_PHYS) {
+			if ((phy_mask & (1 << phy_index)) == 0)
+				continue;
+			sci_phy_get_sas_address(&ihost->phys[phy_index],
+						     &phy_assigned_address);
+
+			if (sci_sas_address_compare(sas_address, phy_assigned_address) != 0) {
+				/*
+				 * The phy mask specified that this phy is part of the same port
+				 * as the starting phy and it is not so fail this configuration */
+				return SCI_FAILURE_UNSUPPORTED_PORT_CONFIGURATION;
+			}
+
+			port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+			port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+
+			sci_port_add_phy(&ihost->ports[port_index],
+					      &ihost->phys[phy_index]);
+
+			assigned_phy_mask |= (1 << phy_index);
+		}
+
+		phy_index++;
+	}
+
+	return sci_port_configuration_agent_validate_ports(ihost, port_agent);
+}
+
+static void mpc_agent_timeout(unsigned long data)
+{
+	u8 index;
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct sci_port_configuration_agent *port_agent;
+	struct isci_host *ihost;
+	unsigned long flags;
+	u16 configure_phy_mask;
+
+	port_agent = container_of(tmr, typeof(*port_agent), timer);
+	ihost = container_of(port_agent, typeof(*ihost), port_agent);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	port_agent->timer_pending = false;
+
+	/* Find the mask of phys that are reported read but as yet unconfigured into a port */
+	configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		struct isci_phy *iphy = &ihost->phys[index];
+
+		if (configure_phy_mask & (1 << index)) {
+			port_agent->link_up_handler(ihost, port_agent,
+						    phy_get_non_dummy_port(iphy),
+						    iphy);
+		}
+	}
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+static void sci_mpc_agent_link_up(struct isci_host *ihost,
+				       struct sci_port_configuration_agent *port_agent,
+				       struct isci_port *iport,
+				       struct isci_phy *iphy)
+{
+	/* If the port is NULL then the phy was not assigned to a port.
+	 * This is because the phy was not given the same SAS Address as
+	 * the other PHYs in the port.
+	 */
+	if (!iport)
+		return;
+
+	port_agent->phy_ready_mask |= (1 << iphy->phy_index);
+	sci_port_link_up(iport, iphy);
+	if ((iport->active_phy_mask & (1 << iphy->phy_index)))
+		port_agent->phy_configured_mask |= (1 << iphy->phy_index);
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link down
+ *    notification.
+ * @port: This is the port object associated with the phy.  If the is no
+ *    associated port this is an NULL.  The port is an invalid
+ *    handle only if the phy was never port of this port.  This happens when
+ *    the phy is not broadcasting the same SAS address as the other phys in the
+ *    assigned port.
+ * @phy: This is the phy object which has gone link down.
+ *
+ * This function handles the manual port configuration link down notifications.
+ * Since all ports and phys are associated at initialization time we just turn
+ * around and notifiy the port object of the link down event.  If this PHY is
+ * not associated with a port there is no action taken. Is it possible to get a
+ * link down notification from a phy that has no assocoated port?
+ */
+static void sci_mpc_agent_link_down(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent,
+	struct isci_port *iport,
+	struct isci_phy *iphy)
+{
+	if (iport != NULL) {
+		/*
+		 * If we can form a new port from the remainder of the phys
+		 * then we want to start the timer to allow the SCI User to
+		 * cleanup old devices and rediscover the port before
+		 * rebuilding the port with the phys that remain in the ready
+		 * state.
+		 */
+		port_agent->phy_ready_mask &= ~(1 << iphy->phy_index);
+		port_agent->phy_configured_mask &= ~(1 << iphy->phy_index);
+
+		/*
+		 * Check to see if there are more phys waiting to be
+		 * configured into a port. If there are allow the SCI User
+		 * to tear down this port, if necessary, and then reconstruct
+		 * the port after the timeout.
+		 */
+		if ((port_agent->phy_configured_mask == 0x0000) &&
+		    (port_agent->phy_ready_mask != 0x0000) &&
+		    !port_agent->timer_pending) {
+			port_agent->timer_pending = true;
+
+			sci_mod_timer(&port_agent->timer,
+				      SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT);
+		}
+
+		sci_port_link_down(iport, iphy);
+	}
+}
+
+/* verify phys are assigned a valid SAS address for automatic port
+ * configuration mode.
+ */
+static enum sci_status
+sci_apc_agent_validate_phy_configuration(struct isci_host *ihost,
+					      struct sci_port_configuration_agent *port_agent)
+{
+	u8 phy_index;
+	u8 port_index;
+	struct sci_sas_address sas_address;
+	struct sci_sas_address phy_assigned_address;
+
+	phy_index = 0;
+
+	while (phy_index < SCI_MAX_PHYS) {
+		port_index = phy_index;
+
+		/* Get the assigned SAS Address for the first PHY on the controller. */
+		sci_phy_get_sas_address(&ihost->phys[phy_index],
+					    &sas_address);
+
+		while (++phy_index < SCI_MAX_PHYS) {
+			sci_phy_get_sas_address(&ihost->phys[phy_index],
+						     &phy_assigned_address);
+
+			/* Verify each of the SAS address are all the same for every PHY */
+			if (sci_sas_address_compare(sas_address, phy_assigned_address) == 0) {
+				port_agent->phy_valid_port_range[phy_index].min_index = port_index;
+				port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+			} else {
+				port_agent->phy_valid_port_range[phy_index].min_index = phy_index;
+				port_agent->phy_valid_port_range[phy_index].max_index = phy_index;
+				break;
+			}
+		}
+	}
+
+	return sci_port_configuration_agent_validate_ports(ihost, port_agent);
+}
+
+static void sci_apc_agent_configure_ports(struct isci_host *ihost,
+					       struct sci_port_configuration_agent *port_agent,
+					       struct isci_phy *iphy,
+					       bool start_timer)
+{
+	u8 port_index;
+	enum sci_status status;
+	struct isci_port *iport;
+	enum SCIC_SDS_APC_ACTIVITY apc_activity = SCIC_SDS_APC_SKIP_PHY;
+
+	iport = sci_port_configuration_agent_find_port(ihost, iphy);
+
+	if (iport) {
+		if (sci_port_is_valid_phy_assignment(iport, iphy->phy_index))
+			apc_activity = SCIC_SDS_APC_ADD_PHY;
+		else
+			apc_activity = SCIC_SDS_APC_SKIP_PHY;
+	} else {
+		/*
+		 * There is no matching Port for this PHY so lets search through the
+		 * Ports and see if we can add the PHY to its own port or maybe start
+		 * the timer and wait to see if a wider port can be made.
+		 *
+		 * Note the break when we reach the condition of the port id == phy id */
+		for (port_index = port_agent->phy_valid_port_range[iphy->phy_index].min_index;
+		     port_index <= port_agent->phy_valid_port_range[iphy->phy_index].max_index;
+		     port_index++) {
+
+			iport = &ihost->ports[port_index];
+
+			/* First we must make sure that this PHY can be added to this Port. */
+			if (sci_port_is_valid_phy_assignment(iport, iphy->phy_index)) {
+				/*
+				 * Port contains a PHY with a greater PHY ID than the current
+				 * PHY that has gone link up.  This phy can not be part of any
+				 * port so skip it and move on. */
+				if (iport->active_phy_mask > (1 << iphy->phy_index)) {
+					apc_activity = SCIC_SDS_APC_SKIP_PHY;
+					break;
+				}
+
+				/*
+				 * We have reached the end of our Port list and have not found
+				 * any reason why we should not either add the PHY to the port
+				 * or wait for more phys to become active. */
+				if (iport->physical_port_index == iphy->phy_index) {
+					/*
+					 * The Port either has no active PHYs.
+					 * Consider that if the port had any active PHYs we would have
+					 * or active PHYs with
+					 * a lower PHY Id than this PHY. */
+					if (apc_activity != SCIC_SDS_APC_START_TIMER) {
+						apc_activity = SCIC_SDS_APC_ADD_PHY;
+					}
+
+					break;
+				}
+
+				/*
+				 * The current Port has no active PHYs and this PHY could be part
+				 * of this Port.  Since we dont know as yet setup to start the
+				 * timer and see if there is a better configuration. */
+				if (iport->active_phy_mask == 0) {
+					apc_activity = SCIC_SDS_APC_START_TIMER;
+				}
+			} else if (iport->active_phy_mask != 0) {
+				/*
+				 * The Port has an active phy and the current Phy can not
+				 * participate in this port so skip the PHY and see if
+				 * there is a better configuration. */
+				apc_activity = SCIC_SDS_APC_SKIP_PHY;
+			}
+		}
+	}
+
+	/*
+	 * Check to see if the start timer operations should instead map to an
+	 * add phy operation.  This is caused because we have been waiting to
+	 * add a phy to a port but could not becuase the automatic port
+	 * configuration engine had a choice of possible ports for the phy.
+	 * Since we have gone through a timeout we are going to restrict the
+	 * choice to the smallest possible port. */
+	if (
+		(start_timer == false)
+		&& (apc_activity == SCIC_SDS_APC_START_TIMER)
+		) {
+		apc_activity = SCIC_SDS_APC_ADD_PHY;
+	}
+
+	switch (apc_activity) {
+	case SCIC_SDS_APC_ADD_PHY:
+		status = sci_port_add_phy(iport, iphy);
+
+		if (status == SCI_SUCCESS) {
+			port_agent->phy_configured_mask |= (1 << iphy->phy_index);
+		}
+		break;
+
+	case SCIC_SDS_APC_START_TIMER:
+		/*
+		 * This can occur for either a link down event, or a link
+		 * up event where we cannot yet tell the port to which a
+		 * phy belongs.
+		 */
+		if (port_agent->timer_pending)
+			sci_del_timer(&port_agent->timer);
+
+		port_agent->timer_pending = true;
+		sci_mod_timer(&port_agent->timer,
+			      SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION);
+		break;
+
+	case SCIC_SDS_APC_SKIP_PHY:
+	default:
+		/* do nothing the PHY can not be made part of a port at this time. */
+		break;
+	}
+}
+
+/**
+ * sci_apc_agent_link_up - handle apc link up events
+ * @scic: This is the controller object that receives the link up
+ *    notification.
+ * @sci_port: This is the port object associated with the phy.  If the is no
+ *    associated port this is an NULL.
+ * @sci_phy: This is the phy object which has gone link up.
+ *
+ * This method handles the automatic port configuration for link up
+ * notifications. Is it possible to get a link down notification from a phy
+ * that has no assocoated port?
+ */
+static void sci_apc_agent_link_up(struct isci_host *ihost,
+				       struct sci_port_configuration_agent *port_agent,
+				       struct isci_port *iport,
+				       struct isci_phy *iphy)
+{
+	u8 phy_index  = iphy->phy_index;
+
+	if (!iport) {
+		/* the phy is not the part of this port */
+		port_agent->phy_ready_mask |= 1 << phy_index;
+		sci_apc_agent_configure_ports(ihost, port_agent, iphy, true);
+	} else {
+		/* the phy is already the part of the port */
+		u32 port_state = iport->sm.current_state_id;
+
+		/* if the PORT'S state is resetting then the link up is from
+		 * port hard reset in this case, we need to tell the port
+		 * that link up is recieved
+		 */
+		BUG_ON(port_state != SCI_PORT_RESETTING);
+		port_agent->phy_ready_mask |= 1 << phy_index;
+		sci_port_link_up(iport, iphy);
+	}
+}
+
+/**
+ *
+ * @controller: This is the controller object that receives the link down
+ *    notification.
+ * @iport: This is the port object associated with the phy.  If the is no
+ *    associated port this is an NULL.
+ * @iphy: This is the phy object which has gone link down.
+ *
+ * This method handles the automatic port configuration link down
+ * notifications. not associated with a port there is no action taken. Is it
+ * possible to get a link down notification from a phy that has no assocoated
+ * port?
+ */
+static void sci_apc_agent_link_down(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent,
+	struct isci_port *iport,
+	struct isci_phy *iphy)
+{
+	port_agent->phy_ready_mask &= ~(1 << iphy->phy_index);
+
+	if (!iport)
+		return;
+	if (port_agent->phy_configured_mask & (1 << iphy->phy_index)) {
+		enum sci_status status;
+
+		status = sci_port_remove_phy(iport, iphy);
+
+		if (status == SCI_SUCCESS)
+			port_agent->phy_configured_mask &= ~(1 << iphy->phy_index);
+	}
+}
+
+/* configure the phys into ports when the timer fires */
+static void apc_agent_timeout(unsigned long data)
+{
+	u32 index;
+	struct sci_timer *tmr = (struct sci_timer *)data;
+	struct sci_port_configuration_agent *port_agent;
+	struct isci_host *ihost;
+	unsigned long flags;
+	u16 configure_phy_mask;
+
+	port_agent = container_of(tmr, typeof(*port_agent), timer);
+	ihost = container_of(port_agent, typeof(*ihost), port_agent);
+
+	spin_lock_irqsave(&ihost->scic_lock, flags);
+
+	if (tmr->cancel)
+		goto done;
+
+	port_agent->timer_pending = false;
+
+	configure_phy_mask = ~port_agent->phy_configured_mask & port_agent->phy_ready_mask;
+
+	if (!configure_phy_mask)
+		return;
+
+	for (index = 0; index < SCI_MAX_PHYS; index++) {
+		if ((configure_phy_mask & (1 << index)) == 0)
+			continue;
+
+		sci_apc_agent_configure_ports(ihost, port_agent,
+						   &ihost->phys[index], false);
+	}
+
+done:
+	spin_unlock_irqrestore(&ihost->scic_lock, flags);
+}
+
+/*
+ * ******************************************************************************
+ * Public port configuration agent routines
+ * ****************************************************************************** */
+
+/**
+ *
+ *
+ * This method will construct the port configuration agent for operation. This
+ * call is universal for both manual port configuration and automatic port
+ * configuration modes.
+ */
+void sci_port_configuration_agent_construct(
+	struct sci_port_configuration_agent *port_agent)
+{
+	u32 index;
+
+	port_agent->phy_configured_mask = 0x00;
+	port_agent->phy_ready_mask = 0x00;
+
+	port_agent->link_up_handler = NULL;
+	port_agent->link_down_handler = NULL;
+
+	port_agent->timer_pending = false;
+
+	for (index = 0; index < SCI_MAX_PORTS; index++) {
+		port_agent->phy_valid_port_range[index].min_index = 0;
+		port_agent->phy_valid_port_range[index].max_index = 0;
+	}
+}
+
+enum sci_status sci_port_configuration_agent_initialize(
+	struct isci_host *ihost,
+	struct sci_port_configuration_agent *port_agent)
+{
+	enum sci_status status;
+	enum sci_port_configuration_mode mode;
+
+	mode = ihost->oem_parameters.controller.mode_type;
+
+	if (mode == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
+		status = sci_mpc_agent_validate_phy_configuration(
+				ihost, port_agent);
+
+		port_agent->link_up_handler = sci_mpc_agent_link_up;
+		port_agent->link_down_handler = sci_mpc_agent_link_down;
+
+		sci_init_timer(&port_agent->timer, mpc_agent_timeout);
+	} else {
+		status = sci_apc_agent_validate_phy_configuration(
+				ihost, port_agent);
+
+		port_agent->link_up_handler = sci_apc_agent_link_up;
+		port_agent->link_down_handler = sci_apc_agent_link_down;
+
+		sci_init_timer(&port_agent->timer, apc_agent_timeout);
+	}
+
+	return status;
+}

drivers/scsi/isci/probe_roms.c

@@ -0,0 +1,243 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ */
+
+/* probe_roms - scan for oem parameters */
+
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/uaccess.h>
+#include <linux/efi.h>
+#include <asm/probe_roms.h>
+
+#include "isci.h"
+#include "task.h"
+#include "probe_roms.h"
+
+static efi_char16_t isci_efivar_name[] = {
+	'R', 's', 't', 'S', 'c', 'u', 'O'
+};
+
+struct isci_orom *isci_request_oprom(struct pci_dev *pdev)
+{
+	void __iomem *oprom = pci_map_biosrom(pdev);
+	struct isci_orom *rom = NULL;
+	size_t len, i;
+	int j;
+	char oem_sig[4];
+	struct isci_oem_hdr oem_hdr;
+	u8 *tmp, sum;
+
+	if (!oprom)
+		return NULL;
+
+	len = pci_biosrom_size(pdev);
+	rom = devm_kzalloc(&pdev->dev, sizeof(*rom), GFP_KERNEL);
+	if (!rom) {
+		dev_warn(&pdev->dev,
+			 "Unable to allocate memory for orom\n");
+		return NULL;
+	}
+
+	for (i = 0; i < len && rom; i += ISCI_OEM_SIG_SIZE) {
+		memcpy_fromio(oem_sig, oprom + i, ISCI_OEM_SIG_SIZE);
+
+		/* we think we found the OEM table */
+		if (memcmp(oem_sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) == 0) {
+			size_t copy_len;
+
+			memcpy_fromio(&oem_hdr, oprom + i, sizeof(oem_hdr));
+
+			copy_len = min(oem_hdr.len - sizeof(oem_hdr),
+				       sizeof(*rom));
+
+			memcpy_fromio(rom,
+				      oprom + i + sizeof(oem_hdr),
+				      copy_len);
+
+			/* calculate checksum */
+			tmp = (u8 *)&oem_hdr;
+			for (j = 0, sum = 0; j < sizeof(oem_hdr); j++, tmp++)
+				sum += *tmp;
+
+			tmp = (u8 *)rom;
+			for (j = 0; j < sizeof(*rom); j++, tmp++)
+				sum += *tmp;
+
+			if (sum != 0) {
+				dev_warn(&pdev->dev,
+					 "OEM table checksum failed\n");
+				continue;
+			}
+
+			/* keep going if that's not the oem param table */
+			if (memcmp(rom->hdr.signature,
+				   ISCI_ROM_SIG,
+				   ISCI_ROM_SIG_SIZE) != 0)
+				continue;
+
+			dev_info(&pdev->dev,
+				 "OEM parameter table found in OROM\n");
+			break;
+		}
+	}
+
+	if (i >= len) {
+		dev_err(&pdev->dev, "oprom parse error\n");
+		devm_kfree(&pdev->dev, rom);
+		rom = NULL;
+	}
+	pci_unmap_biosrom(oprom);
+
+	return rom;
+}
+
+enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem,
+					  struct isci_orom *orom, int scu_index)
+{
+	/* check for valid inputs */
+	if (scu_index < 0 || scu_index >= SCI_MAX_CONTROLLERS ||
+	    scu_index > orom->hdr.num_elements || !oem)
+		return -EINVAL;
+
+	*oem = orom->ctrl[scu_index];
+	return 0;
+}
+
+struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw)
+{
+	struct isci_orom *orom = NULL, *data;
+	int i, j;
+
+	if (request_firmware(&fw, ISCI_FW_NAME, &pdev->dev) != 0)
+		return NULL;
+
+	if (fw->size < sizeof(*orom))
+		goto out;
+
+	data = (struct isci_orom *)fw->data;
+
+	if (strncmp(ISCI_ROM_SIG, data->hdr.signature,
+		    strlen(ISCI_ROM_SIG)) != 0)
+		goto out;
+
+	orom = devm_kzalloc(&pdev->dev, fw->size, GFP_KERNEL);
+	if (!orom)
+		goto out;
+
+	memcpy(orom, fw->data, fw->size);
+
+	if (is_c0(pdev))
+		goto out;
+
+	/*
+	 * deprecated: override default amp_control for pre-preproduction
+	 * silicon revisions
+	 */
+	for (i = 0; i < ARRAY_SIZE(orom->ctrl); i++)
+		for (j = 0; j < ARRAY_SIZE(orom->ctrl[i].phys); j++) {
+			orom->ctrl[i].phys[j].afe_tx_amp_control0 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control1 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control2 = 0xe7c03;
+			orom->ctrl[i].phys[j].afe_tx_amp_control3 = 0xe7c03;
+		}
+ out:
+	release_firmware(fw);
+
+	return orom;
+}
+
+static struct efi *get_efi(void)
+{
+#ifdef CONFIG_EFI
+	return &efi;
+#else
+	return NULL;
+#endif
+}
+
+struct isci_orom *isci_get_efi_var(struct pci_dev *pdev)
+{
+	efi_status_t status;
+	struct isci_orom *rom;
+	struct isci_oem_hdr *oem_hdr;
+	u8 *tmp, sum;
+	int j;
+	unsigned long data_len;
+	u8 *efi_data;
+	u32 efi_attrib = 0;
+
+	data_len = 1024;
+	efi_data = devm_kzalloc(&pdev->dev, data_len, GFP_KERNEL);
+	if (!efi_data) {
+		dev_warn(&pdev->dev,
+			 "Unable to allocate memory for EFI data\n");
+		return NULL;
+	}
+
+	rom = (struct isci_orom *)(efi_data + sizeof(struct isci_oem_hdr));
+
+	if (get_efi())
+		status = get_efi()->get_variable(isci_efivar_name,
+						 &ISCI_EFI_VENDOR_GUID,
+						 &efi_attrib,
+						 &data_len,
+						 efi_data);
+	else
+		status = EFI_NOT_FOUND;
+
+	if (status != EFI_SUCCESS) {
+		dev_warn(&pdev->dev,
+			 "Unable to obtain EFI var data for OEM parms\n");
+		return NULL;
+	}
+
+	oem_hdr = (struct isci_oem_hdr *)efi_data;
+
+	if (memcmp(oem_hdr->sig, ISCI_OEM_SIG, ISCI_OEM_SIG_SIZE) != 0) {
+		dev_warn(&pdev->dev,
+			 "Invalid OEM header signature\n");
+		return NULL;
+	}
+
+	/* calculate checksum */
+	tmp = (u8 *)efi_data;
+	for (j = 0, sum = 0; j < (sizeof(*oem_hdr) + sizeof(*rom)); j++, tmp++)
+		sum += *tmp;
+
+	if (sum != 0) {
+		dev_warn(&pdev->dev,
+			 "OEM table checksum failed\n");
+		return NULL;
+	}
+
+	if (memcmp(rom->hdr.signature,
+		   ISCI_ROM_SIG,
+		   ISCI_ROM_SIG_SIZE) != 0) {
+		dev_warn(&pdev->dev,
+			 "Invalid OEM table signature\n");
+		return NULL;
+	}
+
+	return rom;
+}

drivers/scsi/isci/probe_roms.h

@@ -0,0 +1,249 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in
+ *     the documentation and/or other materials provided with the
+ *     distribution.
+ *   * Neither the name of Intel Corporation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _ISCI_PROBE_ROMS_H_
+#define _ISCI_PROBE_ROMS_H_
+
+#ifdef __KERNEL__
+#include <linux/firmware.h>
+#include <linux/pci.h>
+#include <linux/efi.h>
+#include "isci.h"
+
+#define SCIC_SDS_PARM_NO_SPEED   0
+
+/* generation 1 (i.e. 1.5 Gb/s) */
+#define SCIC_SDS_PARM_GEN1_SPEED 1
+
+/* generation 2 (i.e. 3.0 Gb/s) */
+#define SCIC_SDS_PARM_GEN2_SPEED 2
+
+/* generation 3 (i.e. 6.0 Gb/s) */
+#define SCIC_SDS_PARM_GEN3_SPEED 3
+#define SCIC_SDS_PARM_MAX_SPEED SCIC_SDS_PARM_GEN3_SPEED
+
+/* parameters that can be set by module parameters */
+struct sci_user_parameters {
+	struct sci_phy_user_params {
+		/**
+		 * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
+		 * insertion frequency for this phy index.
+		 */
+		u32 notify_enable_spin_up_insertion_frequency;
+
+		/**
+		 * This method specifies the number of transmitted DWORDs within which
+		 * to transmit a single ALIGN primitive.  This value applies regardless
+		 * of what type of device is attached or connection state.  A value of
+		 * 0 indicates that no ALIGN primitives will be inserted.
+		 */
+		u16 align_insertion_frequency;
+
+		/**
+		 * This method specifies the number of transmitted DWORDs within which
+		 * to transmit 2 ALIGN primitives.  This applies for SAS connections
+		 * only.  A minimum value of 3 is required for this field.
+		 */
+		u16 in_connection_align_insertion_frequency;
+
+		/**
+		 * This field indicates the maximum speed generation to be utilized
+		 * by phys in the supplied port.
+		 * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
+		 * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
+		 * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
+		 */
+		u8 max_speed_generation;
+
+	} phys[SCI_MAX_PHYS];
+
+	/**
+	 * This field specifies the maximum number of direct attached devices
+	 * that can have power supplied to them simultaneously.
+	 */
+	u8 max_number_concurrent_device_spin_up;
+
+	/**
+	 * This field specifies the number of seconds to allow a phy to consume
+	 * power before yielding to another phy.
+	 *
+	 */
+	u8 phy_spin_up_delay_interval;
+
+	/**
+	 * These timer values specifies how long a link will remain open with no
+	 * activity in increments of a microsecond, it can be in increments of
+	 * 100 microseconds if the upper most bit is set.
+	 *
+	 */
+	u16 stp_inactivity_timeout;
+	u16 ssp_inactivity_timeout;
+
+	/**
+	 * These timer values specifies how long a link will remain open in increments
+	 * of 100 microseconds.
+	 *
+	 */
+	u16 stp_max_occupancy_timeout;
+	u16 ssp_max_occupancy_timeout;
+
+	/**
+	 * This timer value specifies how long a link will remain open with no
+	 * outbound traffic in increments of a microsecond.
+	 *
+	 */
+	u8 no_outbound_task_timeout;
+
+};
+
+#define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
+#define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
+#define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
+
+struct sci_oem_params;
+int sci_oem_parameters_validate(struct sci_oem_params *oem);
+
+struct isci_orom;
+struct isci_orom *isci_request_oprom(struct pci_dev *pdev);
+enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem,
+					  struct isci_orom *orom, int scu_index);
+struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw);
+struct isci_orom *isci_get_efi_var(struct pci_dev *pdev);
+
+struct isci_oem_hdr {
+	u8 sig[4];
+	u8 rev_major;
+	u8 rev_minor;
+	u16 len;
+	u8 checksum;
+	u8 reserved1;
+	u16 reserved2;
+} __attribute__ ((packed));
+
+#else
+#define SCI_MAX_PORTS 4
+#define SCI_MAX_PHYS 4
+#define SCI_MAX_CONTROLLERS 2
+#endif
+
+#define ISCI_FW_NAME		"isci/isci_firmware.bin"
+
+#define ROMSIGNATURE		0xaa55
+
+#define ISCI_OEM_SIG		"$OEM"
+#define ISCI_OEM_SIG_SIZE	4
+#define ISCI_ROM_SIG		"ISCUOEMB"
+#define ISCI_ROM_SIG_SIZE	8
+
+#define ISCI_EFI_VENDOR_GUID	\
+	EFI_GUID(0x193dfefa, 0xa445, 0x4302, 0x99, 0xd8, 0xef, 0x3a, 0xad, \
+			0x1a, 0x04, 0xc6)
+#define ISCI_EFI_VAR_NAME	"RstScuO"
+
+/* Allowed PORT configuration modes APC Automatic PORT configuration mode is
+ * defined by the OEM configuration parameters providing no PHY_MASK parameters
+ * for any PORT. i.e. There are no phys assigned to any of the ports at start.
+ * MPC Manual PORT configuration mode is defined by the OEM configuration
+ * parameters providing a PHY_MASK value for any PORT.  It is assumed that any
+ * PORT with no PHY_MASK is an invalid port and not all PHYs must be assigned.
+ * A PORT_PHY mask that assigns just a single PHY to a port and no other PHYs
+ * being assigned is sufficient to declare manual PORT configuration.
+ */
+enum sci_port_configuration_mode {
+	SCIC_PORT_MANUAL_CONFIGURATION_MODE = 0,
+	SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE = 1
+};
+
+struct sci_bios_oem_param_block_hdr {
+	uint8_t signature[ISCI_ROM_SIG_SIZE];
+	uint16_t total_block_length;
+	uint8_t hdr_length;
+	uint8_t version;
+	uint8_t preboot_source;
+	uint8_t num_elements;
+	uint16_t element_length;
+	uint8_t reserved[8];
+} __attribute__ ((packed));
+
+struct sci_oem_params {
+	struct {
+		uint8_t mode_type;
+		uint8_t max_concurrent_dev_spin_up;
+		uint8_t do_enable_ssc;
+		uint8_t reserved;
+	} controller;
+
+	struct {
+		uint8_t phy_mask;
+	} ports[SCI_MAX_PORTS];
+
+	struct sci_phy_oem_params {
+		struct {
+			uint32_t high;
+			uint32_t low;
+		} sas_address;
+
+		uint32_t afe_tx_amp_control0;
+		uint32_t afe_tx_amp_control1;
+		uint32_t afe_tx_amp_control2;
+		uint32_t afe_tx_amp_control3;
+	} phys[SCI_MAX_PHYS];
+} __attribute__ ((packed));
+
+struct isci_orom {
+	struct sci_bios_oem_param_block_hdr hdr;
+	struct sci_oem_params ctrl[SCI_MAX_CONTROLLERS];
+} __attribute__ ((packed));
+
+#endif