Automatic merge with /usr/src/ntfs-2.6.git

Documentation/DocBook/libata.tmpl

@@ -14,7 +14,7 @@
   </authorgroup>
 
   <copyright>
-   <year>2003</year>
+   <year>2003-2005</year>
    <holder>Jeff Garzik</holder>
   </copyright>
 
@@ -44,30 +44,38 @@
 
 <toc></toc>
 
-  <chapter id="libataThanks">
-     <title>Thanks</title>
+  <chapter id="libataIntroduction">
+     <title>Introduction</title>
   <para>
-  The bulk of the ATA knowledge comes thanks to long conversations with
-  Andre Hedrick (www.linux-ide.org).
+  libATA is a library used inside the Linux kernel to support ATA host
+  controllers and devices.  libATA provides an ATA driver API, class
+  transports for ATA and ATAPI devices, and SCSI&lt;-&gt;ATA translation
+  for ATA devices according to the T10 SAT specification.
   </para>
   <para>
-  Thanks to Alan Cox for pointing out similarities 
-  between SATA and SCSI, and in general for motivation to hack on
-  libata.
-  </para>
-  <para>
-  libata's device detection
-  method, ata_pio_devchk, and in general all the early probing was
-  based on extensive study of Hale Landis's probe/reset code in his
-  ATADRVR driver (www.ata-atapi.com).
+  This Guide documents the libATA driver API, library functions, library
+  internals, and a couple sample ATA low-level drivers.
   </para>
   </chapter>
 
   <chapter id="libataDriverApi">
      <title>libata Driver API</title>
+     <para>
+     struct ata_port_operations is defined for every low-level libata
+     hardware driver, and it controls how the low-level driver
+     interfaces with the ATA and SCSI layers.
+     </para>
+     <para>
+     FIS-based drivers will hook into the system with ->qc_prep() and
+     ->qc_issue() high-level hooks.  Hardware which behaves in a manner
+     similar to PCI IDE hardware may utilize several generic helpers,
+     defining at a bare minimum the bus I/O addresses of the ATA shadow
+     register blocks.
+     </para>
      <sect1>
         <title>struct ata_port_operations</title>
 
+	<sect2><title>Disable ATA port</title>
 	<programlisting>
 void (*port_disable) (struct ata_port *);
 	</programlisting>
@@ -78,6 +86,9 @@ void (*port_disable) (struct ata_port *);
 	unplug).
 	</para>
 
+	</sect2>
+
+	<sect2><title>Post-IDENTIFY device configuration</title>
 	<programlisting>
 void (*dev_config) (struct ata_port *, struct ata_device *);
 	</programlisting>
@@ -88,6 +99,9 @@ void (*dev_config) (struct ata_port *, struct ata_device *);
 	issue of SET FEATURES - XFER MODE, and prior to operation.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Set PIO/DMA mode</title>
 	<programlisting>
 void (*set_piomode) (struct ata_port *, struct ata_device *);
 void (*set_dmamode) (struct ata_port *, struct ata_device *);
@@ -108,6 +122,9 @@ void (*post_set_mode) (struct ata_port *ap);
 	->set_dma_mode() is only called if DMA is possible.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Taskfile read/write</title>
 	<programlisting>
 void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
 void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
@@ -120,6 +137,9 @@ void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
 	taskfile register values.
 	</para>
 
+	</sect2>
+
+	<sect2><title>ATA command execute</title>
 	<programlisting>
 void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
 	</programlisting>
@@ -129,17 +149,37 @@ void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
 	->tf_load(), to be initiated in hardware.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Per-cmd ATAPI DMA capabilities filter</title>
+	<programlisting>
+int (*check_atapi_dma) (struct ata_queued_cmd *qc);
+	</programlisting>
+
+	<para>
+Allow low-level driver to filter ATA PACKET commands, returning a status
+indicating whether or not it is OK to use DMA for the supplied PACKET
+command.
+	</para>
+
+	</sect2>
+
+	<sect2><title>Read specific ATA shadow registers</title>
 	<programlisting>
 u8   (*check_status)(struct ata_port *ap);
-void (*dev_select)(struct ata_port *ap, unsigned int device);
+u8   (*check_altstatus)(struct ata_port *ap);
+u8   (*check_err)(struct ata_port *ap);
 	</programlisting>
 
 	<para>
-	Reads the Status ATA shadow register from hardware.  On some
-	hardware, this has the side effect of clearing the interrupt
-	condition.
+	Reads the Status/AltStatus/Error ATA shadow register from
+	hardware.  On some hardware, reading the Status register has
+	the side effect of clearing the interrupt condition.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Select ATA device on bus</title>
 	<programlisting>
 void (*dev_select)(struct ata_port *ap, unsigned int device);
 	</programlisting>
@@ -147,9 +187,13 @@ void (*dev_select)(struct ata_port *ap, unsigned int device);
 	<para>
 	Issues the low-level hardware command(s) that causes one of N
 	hardware devices to be considered 'selected' (active and
-	available for use) on the ATA bus.
+	available for use) on the ATA bus.  This generally has no
+meaning on FIS-based devices.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Reset ATA bus</title>
 	<programlisting>
 void (*phy_reset) (struct ata_port *ap);
 	</programlisting>
@@ -162,17 +206,31 @@ void (*phy_reset) (struct ata_port *ap);
 	functions ata_bus_reset() or sata_phy_reset() for this hook.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Control PCI IDE BMDMA engine</title>
 	<programlisting>
 void (*bmdma_setup) (struct ata_queued_cmd *qc);
 void (*bmdma_start) (struct ata_queued_cmd *qc);
+void (*bmdma_stop) (struct ata_port *ap);
+u8   (*bmdma_status) (struct ata_port *ap);
 	</programlisting>
 
 	<para>
-	When setting up an IDE BMDMA transaction, these hooks arm
-	(->bmdma_setup) and fire (->bmdma_start) the hardware's DMA
-	engine.
+When setting up an IDE BMDMA transaction, these hooks arm
+(->bmdma_setup), fire (->bmdma_start), and halt (->bmdma_stop)
+the hardware's DMA engine.  ->bmdma_status is used to read the standard
+PCI IDE DMA Status register.
 	</para>
 
+	<para>
+These hooks are typically either no-ops, or simply not implemented, in
+FIS-based drivers.
+	</para>
+
+	</sect2>
+
+	<sect2><title>High-level taskfile hooks</title>
 	<programlisting>
 void (*qc_prep) (struct ata_queued_cmd *qc);
 int (*qc_issue) (struct ata_queued_cmd *qc);
@@ -190,20 +248,26 @@ int (*qc_issue) (struct ata_queued_cmd *qc);
 	->qc_issue is used to make a command active, once the hardware
 	and S/G tables have been prepared.  IDE BMDMA drivers use the
 	helper function ata_qc_issue_prot() for taskfile protocol-based
-	dispatch.  More advanced drivers roll their own ->qc_issue
-	implementation, using this as the "issue new ATA command to
-	hardware" hook.
+	dispatch.  More advanced drivers implement their own ->qc_issue.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Timeout (error) handling</title>
 	<programlisting>
 void (*eng_timeout) (struct ata_port *ap);
 	</programlisting>
 
 	<para>
-	This is a high level error handling function, called from the
-	error handling thread, when a command times out.
+This is a high level error handling function, called from the
+error handling thread, when a command times out.  Most newer
+hardware will implement its own error handling code here.  IDE BMDMA
+drivers may use the helper function ata_eng_timeout().
 	</para>
 
+	</sect2>
+
+	<sect2><title>Hardware interrupt handling</title>
 	<programlisting>
 irqreturn_t (*irq_handler)(int, void *, struct pt_regs *);
 void (*irq_clear) (struct ata_port *);
@@ -216,6 +280,9 @@ void (*irq_clear) (struct ata_port *);
 	is quiet.
 	</para>
 
+	</sect2>
+
+	<sect2><title>SATA phy read/write</title>
 	<programlisting>
 u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg);
 void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
@@ -227,6 +294,9 @@ void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
 	if ->phy_reset hook called the sata_phy_reset() helper function.
 	</para>
 
+	</sect2>
+
+	<sect2><title>Init and shutdown</title>
 	<programlisting>
 int (*port_start) (struct ata_port *ap);
 void (*port_stop) (struct ata_port *ap);
@@ -240,15 +310,17 @@ void (*host_stop) (struct ata_host_set *host_set);
 	tasks.  
 	</para>
 	<para>
-	->host_stop() is called when the rmmod or hot unplug process
-	begins.  The hook must stop all hardware interrupts, DMA
-	engines, etc.
-	</para>
-	<para>
 	->port_stop() is called after ->host_stop().  It's sole function
 	is to release DMA/memory resources, now that they are no longer
 	actively being used.
 	</para>
+	<para>
+	->host_stop() is called after all ->port_stop() calls
+have completed.  The hook must finalize hardware shutdown, release DMA
+and other resources, etc.
+	</para>
+
+	</sect2>
 
      </sect1>
   </chapter>
@@ -279,4 +351,24 @@ void (*host_stop) (struct ata_host_set *host_set);
 !Idrivers/scsi/sata_sil.c
   </chapter>
 
+  <chapter id="libataThanks">
+     <title>Thanks</title>
+  <para>
+  The bulk of the ATA knowledge comes thanks to long conversations with
+  Andre Hedrick (www.linux-ide.org), and long hours pondering the ATA
+  and SCSI specifications.
+  </para>
+  <para>
+  Thanks to Alan Cox for pointing out similarities 
+  between SATA and SCSI, and in general for motivation to hack on
+  libata.
+  </para>
+  <para>
+  libata's device detection
+  method, ata_pio_devchk, and in general all the early probing was
+  based on extensive study of Hale Landis's probe/reset code in his
+  ATADRVR driver (www.ata-atapi.com).
+  </para>
+  </chapter>
+
 </book>

Documentation/cpu-freq/cpufreq-stats.txt

@@ -0,0 +1,128 @@
+
+     CPU frequency and voltage scaling statictics in the Linux(TM) kernel
+
+
+             L i n u x    c p u f r e q - s t a t s   d r i v e r
+
+                       - information for users -
+
+
+             Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+
+Contents
+1. Introduction
+2. Statistics Provided (with example)
+3. Configuring cpufreq-stats
+
+
+1. Introduction
+
+cpufreq-stats is a driver that provices CPU frequency statistics for each CPU.
+This statistics is provided in /sysfs as a bunch of read_only interfaces. This
+interface (when configured) will appear in a seperate directory under cpufreq
+in /sysfs (<sysfs root>/devices/system/cpu/cpuX/cpufreq/stats/) for each CPU.
+Various statistics will form read_only files under this directory.
+
+This driver is designed to be independent of any particular cpufreq_driver
+that may be running on your CPU. So, it will work with any cpufreq_driver.
+
+
+2. Statistics Provided (with example)
+
+cpufreq stats provides following statistics (explained in detail below).
+-  time_in_state
+-  total_trans
+-  trans_table
+
+All the statistics will be from the time the stats driver has been inserted 
+to the time when a read of a particular statistic is done. Obviously, stats 
+driver will not have any information about the the frequcny transitions before
+the stats driver insertion.
+
+--------------------------------------------------------------------------------
+<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # ls -l
+total 0
+drwxr-xr-x  2 root root    0 May 14 16:06 .
+drwxr-xr-x  3 root root    0 May 14 15:58 ..
+-r--r--r--  1 root root 4096 May 14 16:06 time_in_state
+-r--r--r--  1 root root 4096 May 14 16:06 total_trans
+-r--r--r--  1 root root 4096 May 14 16:06 trans_table
+--------------------------------------------------------------------------------
+
+-  time_in_state
+This gives the amount of time spent in each of the frequencies supported by
+this CPU. The cat output will have "<frequency> <time>" pair in each line, which
+will mean this CPU spent <time> usertime units of time at <frequency>. Output
+will have one line for each of the supported freuencies. usertime units here 
+is 10mS (similar to other time exported in /proc).
+
+--------------------------------------------------------------------------------
+<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat time_in_state 
+3600000 2089
+3400000 136
+3200000 34
+3000000 67
+2800000 172488
+--------------------------------------------------------------------------------
+
+
+-  total_trans
+This gives the total number of frequency transitions on this CPU. The cat 
+output will have a single count which is the total number of frequency
+transitions.
+
+--------------------------------------------------------------------------------
+<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat total_trans
+20
+--------------------------------------------------------------------------------
+
+-  trans_table
+This will give a fine grained information about all the CPU frequency
+transitions. The cat output here is a two dimensional matrix, where an entry
+<i,j> (row i, column j) represents the count of number of transitions from 
+Freq_i to Freq_j. Freq_i is in descending order with increasing rows and 
+Freq_j is in descending order with increasing columns. The output here also 
+contains the actual freq values for each row and column for better readability.
+
+--------------------------------------------------------------------------------
+<mysystem>:/sys/devices/system/cpu/cpu0/cpufreq/stats # cat trans_table
+   From  :    To
+         :   3600000   3400000   3200000   3000000   2800000 
+  3600000:         0         5         0         0         0 
+  3400000:         4         0         2         0         0 
+  3200000:         0         1         0         2         0 
+  3000000:         0         0         1         0         3 
+  2800000:         0         0         0         2         0 
+--------------------------------------------------------------------------------
+
+
+3. Configuring cpufreq-stats
+
+To configure cpufreq-stats in your kernel
+Config Main Menu
+	Power management options (ACPI, APM)  --->
+		CPU Frequency scaling  --->
+			[*] CPU Frequency scaling
+			<*>   CPU frequency translation statistics 
+			[*]     CPU frequency translation statistics details
+
+
+"CPU Frequency scaling" (CONFIG_CPU_FREQ) should be enabled to configure
+cpufreq-stats.
+
+"CPU frequency translation statistics" (CONFIG_CPU_FREQ_STAT) provides the
+basic statistics which includes time_in_state and total_trans.
+
+"CPU frequency translation statistics details" (CONFIG_CPU_FREQ_STAT_DETAILS)
+provides fine grained cpufreq stats by trans_table. The reason for having a
+seperate config option for trans_table is:
+- trans_table goes against the traditional /sysfs rule of one value per
+  interface. It provides a whole bunch of value in a 2 dimensional matrix
+  form.
+
+Once these two options are enabled and your CPU supports cpufrequency, you
+will be able to see the CPU frequency statistics in /sysfs.
+
+
+
+

MAINTAINERS

@@ -239,6 +239,12 @@ L:	linux-usb-devel@lists.sourceforge.net
 W:	http://www.linux-usb.org/SpeedTouch/
 S:	Maintained
 
+ALI1563 I2C DRIVER
+P:	Rudolf Marek
+M:	r.marek@sh.cvut.cz
+L:	sensors@stimpy.netroedge.com
+S:	Maintained
+
 ALPHA PORT
 P:	Richard Henderson
 M:	rth@twiddle.net
@@ -1023,8 +1029,8 @@ W:	http://www.ia64-linux.org/
 S:	Maintained
 
 SN-IA64 (Itanium) SUB-PLATFORM
-P:	Jesse Barnes
-M:	jbarnes@sgi.com
+P:	Greg Edwards
+M:	edwardsg@sgi.com
 L:	linux-altix@sgi.com
 L:	linux-ia64@vger.kernel.org
 W:	http://www.sgi.com/altix

Makefile

@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 12
-EXTRAVERSION =-rc5
+EXTRAVERSION =-rc6
 NAME=Woozy Numbat
 
 # *DOCUMENTATION*

arch/h8300/kernel/process.c

@@ -54,7 +54,7 @@ asmlinkage void ret_from_fork(void);
 void default_idle(void)
 {
 	while(1) {
-		if (need_resched()) {
+		if (!need_resched()) {
 			local_irq_enable();
 			__asm__("sleep");
 			local_irq_disable();

arch/i386/kernel/cpu/cpufreq/Kconfig

@@ -23,7 +23,7 @@ config X86_ACPI_CPUFREQ
 	  If in doubt, say N.
 
 config ELAN_CPUFREQ
-	tristate "AMD Elan"
+	tristate "AMD Elan SC400 and SC410"
 	select CPU_FREQ_TABLE
 	depends on X86_ELAN
 	---help---
@@ -38,6 +38,18 @@ config ELAN_CPUFREQ
 
 	  If in doubt, say N.
 
+config SC520_CPUFREQ
+	tristate "AMD Elan SC520"
+	select CPU_FREQ_TABLE
+	depends on X86_ELAN
+	---help---
+	  This adds the CPUFreq driver for AMD Elan SC520 processor.
+
+	  For details, take a look at <file:Documentation/cpu-freq/>.
+
+	  If in doubt, say N.
+
+
 config X86_POWERNOW_K6
 	tristate "AMD Mobile K6-2/K6-3 PowerNow!"
 	select CPU_FREQ_TABLE

arch/i386/kernel/cpu/cpufreq/Makefile

@@ -3,6 +3,7 @@ obj-$(CONFIG_X86_POWERNOW_K7)		+= powernow-k7.o
 obj-$(CONFIG_X86_POWERNOW_K8)		+= powernow-k8.o
 obj-$(CONFIG_X86_LONGHAUL)		+= longhaul.o
 obj-$(CONFIG_ELAN_CPUFREQ)		+= elanfreq.o
+obj-$(CONFIG_SC520_CPUFREQ)		+= sc520_freq.o
 obj-$(CONFIG_X86_LONGRUN)		+= longrun.o  
 obj-$(CONFIG_X86_GX_SUSPMOD)		+= gx-suspmod.o
 obj-$(CONFIG_X86_SPEEDSTEP_ICH)		+= speedstep-ich.o

arch/i386/kernel/cpu/cpufreq/longhaul.c

@@ -29,6 +29,7 @@
 #include <linux/cpufreq.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/pci.h>
 
 #include <asm/msr.h>
 #include <asm/timex.h>
@@ -119,7 +120,13 @@ static int longhaul_get_cpu_mult(void)
 static void do_powersaver(union msr_longhaul *longhaul,
 			unsigned int clock_ratio_index)
 {
+	struct pci_dev *dev;
+	unsigned long flags;
+	unsigned int tmp_mask;
 	int version;
+	int i;
+	u16 pci_cmd;
+	u16 cmd_state[64];
 
 	switch (cpu_model) {
 	case CPU_EZRA_T:
@@ -137,17 +144,58 @@ static void do_powersaver(union msr_longhaul *longhaul,
 	longhaul->bits.SoftBusRatio4 = (clock_ratio_index & 0x10) >> 4;
 	longhaul->bits.EnableSoftBusRatio = 1;
 	longhaul->bits.RevisionKey = 0;
-	local_irq_disable();
-	wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
+
+	preempt_disable();
+	local_irq_save(flags);
+
+	/*
+	 * get current pci bus master state for all devices
+	 * and clear bus master bit
+	 */
+	dev = NULL;
+	i = 0;
+	do {
+		dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
+		if (dev != NULL) {
+			pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
+			cmd_state[i++] = pci_cmd;
+			pci_cmd &= ~PCI_COMMAND_MASTER;
+			pci_write_config_word(dev, PCI_COMMAND, pci_cmd);
+		}
+	} while (dev != NULL);
+
+	tmp_mask=inb(0x21);	/* works on C3. save mask. */
+	outb(0xFE,0x21);	/* TMR0 only */
+	outb(0xFF,0x80);	/* delay */
+
 	local_irq_enable();
+
+	__hlt();
+	wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
 	__hlt();
 
+	local_irq_disable();
+
+	outb(tmp_mask,0x21);	/* restore mask */
+
+	/* restore pci bus master state for all devices */
+	dev = NULL;
+	i = 0;
+	do {
+		dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
+		if (dev != NULL) {
+			pci_cmd = cmd_state[i++];
+			pci_write_config_byte(dev, PCI_COMMAND, pci_cmd);
+		}
+	} while (dev != NULL);
+	local_irq_restore(flags);
+	preempt_enable();
+
+	/* disable bus ratio bit */
 	rdmsrl(MSR_VIA_LONGHAUL, longhaul->val);
 	longhaul->bits.EnableSoftBusRatio = 0;
 	longhaul->bits.RevisionKey = version;
-	local_irq_disable();
 	wrmsrl(MSR_VIA_LONGHAUL, longhaul->val);
-	local_irq_enable();
 }
 
 /**
@@ -578,7 +626,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
 		longhaul_setup_voltagescaling();
 
 	policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
-	policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
+	policy->cpuinfo.transition_latency = 200000;	/* nsec */
 	policy->cur = calc_speed(longhaul_get_cpu_mult());
 
 	ret = cpufreq_frequency_table_cpuinfo(policy, longhaul_table);

arch/i386/kernel/cpu/cpufreq/powernow-k7.c

@@ -23,6 +23,7 @@
 #include <linux/dmi.h>
 
 #include <asm/msr.h>
+#include <asm/timer.h>
 #include <asm/timex.h>
 #include <asm/io.h>
 #include <asm/system.h>
@@ -586,13 +587,17 @@ static int __init powernow_cpu_init (struct cpufreq_policy *policy)
 
 	rdmsrl (MSR_K7_FID_VID_STATUS, fidvidstatus.val);
 
-	/* A K7 with powernow technology is set to max frequency by BIOS */
-	fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.MFID];
+	/* recalibrate cpu_khz */
+	result = recalibrate_cpu_khz();
+	if (result)
+		return result;
+
+	fsb = (10 * cpu_khz) / fid_codes[fidvidstatus.bits.CFID];
 	if (!fsb) {
 		printk(KERN_WARNING PFX "can not determine bus frequency\n");
 		return -EINVAL;
 	}
-	dprintk("FSB: %3d.%03d MHz\n", fsb/1000, fsb%1000);
+	dprintk("FSB: %3dMHz\n", fsb/1000);
 
 	if (dmi_check_system(powernow_dmi_table) || acpi_force) {
 		printk (KERN_INFO PFX "PSB/PST known to be broken.  Trying ACPI instead\n");

arch/i386/kernel/cpu/cpufreq/powernow-k8.c

@@ -4,7 +4,7 @@
  *  GNU general public license version 2. See "COPYING" or
  *  http://www.gnu.org/licenses/gpl.html
  *
- *  Support : paul.devriendt@amd.com
+ *  Support : mark.langsdorf@amd.com
  *
  *  Based on the powernow-k7.c module written by Dave Jones.
  *  (C) 2003 Dave Jones <davej@codemonkey.org.uk> on behalf of SuSE Labs
@@ -15,12 +15,13 @@
  *
  *  Valuable input gratefully received from Dave Jones, Pavel Machek,
  *  Dominik Brodowski, and others.
+ *  Originally developed by Paul Devriendt.
  *  Processor information obtained from Chapter 9 (Power and Thermal Management)
  *  of the "BIOS and Kernel Developer's Guide for the AMD Athlon 64 and AMD
  *  Opteron Processors" available for download from www.amd.com
  *
  *  Tables for specific CPUs can be infrerred from
- *	http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf
+ *     http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/30430.pdf
  */
 
 #include <linux/kernel.h>
@@ -30,6 +31,7 @@
 #include <linux/cpufreq.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/cpumask.h>
 
 #include <asm/msr.h>
 #include <asm/io.h>
@@ -42,7 +44,7 @@
 
 #define PFX "powernow-k8: "
 #define BFX PFX "BIOS error: "
-#define VERSION "version 1.00.09e"
+#define VERSION "version 1.40.2"
 #include "powernow-k8.h"
 
 /* serialize freq changes  */
@@ -50,6 +52,10 @@ static DECLARE_MUTEX(fidvid_sem);
 
 static struct powernow_k8_data *powernow_data[NR_CPUS];
 
+#ifndef CONFIG_SMP
+static cpumask_t cpu_core_map[1];
+#endif
+
 /* Return a frequency in MHz, given an input fid */
 static u32 find_freq_from_fid(u32 fid)
 {
@@ -274,11 +280,18 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid
 {
 	u32 rvosteps = data->rvo;
 	u32 savefid = data->currfid;
+	u32 maxvid, lo;
 
 	dprintk("ph1 (cpu%d): start, currfid 0x%x, currvid 0x%x, reqvid 0x%x, rvo 0x%x\n",
 		smp_processor_id(),
 		data->currfid, data->currvid, reqvid, data->rvo);
 
+	rdmsr(MSR_FIDVID_STATUS, lo, maxvid);
+	maxvid = 0x1f & (maxvid >> 16);
+	dprintk("ph1 maxvid=0x%x\n", maxvid);
+	if (reqvid < maxvid) /* lower numbers are higher voltages */
+		reqvid = maxvid;
+
 	while (data->currvid > reqvid) {
 		dprintk("ph1: curr 0x%x, req vid 0x%x\n",
 			data->currvid, reqvid);
@@ -286,8 +299,8 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid
 			return 1;
 	}
 
-	while ((rvosteps > 0)  && ((data->rvo + data->currvid) > reqvid)) {
-		if (data->currvid == 0) {
+	while ((rvosteps > 0) && ((data->rvo + data->currvid) > reqvid)) {
+		if (data->currvid == maxvid) {
 			rvosteps = 0;
 		} else {
 			dprintk("ph1: changing vid for rvo, req 0x%x\n",
@@ -671,7 +684,7 @@ static int find_psb_table(struct powernow_k8_data *data)
 	 * BIOS and Kernel Developer's Guide, which is available on
 	 * www.amd.com
 	 */
-	printk(KERN_ERR PFX "BIOS error - no PSB\n");
+	printk(KERN_INFO PFX "BIOS error - no PSB or ACPI _PSS objects\n");
 	return -ENODEV;
 }
 
@@ -695,7 +708,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 	struct cpufreq_frequency_table *powernow_table;
 
 	if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) {
-		dprintk("register performance failed\n");
+		dprintk("register performance failed: bad ACPI data\n");
 		return -EIO;
 	}
 
@@ -746,22 +759,23 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
 			continue;
 		}
 
- 		if (fid < HI_FID_TABLE_BOTTOM) {
- 			if (cntlofreq) {
- 				/* if both entries are the same, ignore this
- 				 * one... 
- 				 */
- 				if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) ||
- 				    (powernow_table[i].index != powernow_table[cntlofreq].index)) {
- 					printk(KERN_ERR PFX "Too many lo freq table entries\n");
- 					goto err_out_mem;
- 				}
-				
- 				dprintk("double low frequency table entry, ignoring it.\n");
- 				powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
- 				continue;
- 			} else
- 				cntlofreq = i;
+		/* verify only 1 entry from the lo frequency table */
+		if (fid < HI_FID_TABLE_BOTTOM) {
+			if (cntlofreq) {
+				/* if both entries are the same, ignore this
+				 * one... 
+				 */
+				if ((powernow_table[i].frequency != powernow_table[cntlofreq].frequency) ||
+				    (powernow_table[i].index != powernow_table[cntlofreq].index)) {
+					printk(KERN_ERR PFX "Too many lo freq table entries\n");
+					goto err_out_mem;
+				}
+
+				dprintk("double low frequency table entry, ignoring it.\n");
+				powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID;
+				continue;
+			} else
+				cntlofreq = i;
 		}
 
 		if (powernow_table[i].frequency != (data->acpi_data.states[i].core_frequency * 1000)) {
@@ -816,7 +830,7 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
 {
 	u32 fid;
 	u32 vid;
-	int res;
+	int res, i;
 	struct cpufreq_freqs freqs;
 
 	dprintk("cpu %d transition to index %u\n", smp_processor_id(), index);
@@ -841,7 +855,8 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
 	}
 
 	if ((fid < HI_FID_TABLE_BOTTOM) && (data->currfid < HI_FID_TABLE_BOTTOM)) {
-		printk("ignoring illegal change in lo freq table-%x to 0x%x\n",
+		printk(KERN_ERR PFX
+		       "ignoring illegal change in lo freq table-%x to 0x%x\n",
 		       data->currfid, fid);
 		return 1;
 	}
@@ -850,18 +865,20 @@ static int transition_frequency(struct powernow_k8_data *data, unsigned int inde
 		smp_processor_id(), fid, vid);
 
 	freqs.cpu = data->cpu;
-
 	freqs.old = find_khz_freq_from_fid(data->currfid);
 	freqs.new = find_khz_freq_from_fid(fid);
-	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+	for_each_cpu_mask(i, cpu_core_map[data->cpu]) {
+		freqs.cpu = i;
+		cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+	}
 
-	down(&fidvid_sem);
 	res = transition_fid_vid(data, fid, vid);
-	up(&fidvid_sem);
 
 	freqs.new = find_khz_freq_from_fid(data->currfid);
-	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
+	for_each_cpu_mask(i, cpu_core_map[data->cpu]) {
+		freqs.cpu = i;
+		cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+        }
 	return res;
 }
 
@@ -874,6 +891,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
 	u32 checkvid = data->currvid;
 	unsigned int newstate;
 	int ret = -EIO;
+	int i;
 
 	/* only run on specific CPU from here on */
 	oldmask = current->cpus_allowed;
@@ -902,22 +920,41 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
 		data->currfid, data->currvid);
 
 	if ((checkvid != data->currvid) || (checkfid != data->currfid)) {
-		printk(KERN_ERR PFX
-		       "error - out of sync, fid 0x%x 0x%x, vid 0x%x 0x%x\n",
-		       checkfid, data->currfid, checkvid, data->currvid);
+		printk(KERN_INFO PFX
+			"error - out of sync, fix 0x%x 0x%x, vid 0x%x 0x%x\n",
+			checkfid, data->currfid, checkvid, data->currvid);
 	}
 
 	if (cpufreq_frequency_table_target(pol, data->powernow_table, targfreq, relation, &newstate))
 		goto err_out;
 
+	down(&fidvid_sem);
+
+	for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
+		/* make sure the sibling is initialized */
+		if (!powernow_data[i]) {
+                        ret = 0;
+                        up(&fidvid_sem);
+                        goto err_out;
+                }
+	}
+
 	powernow_k8_acpi_pst_values(data, newstate);
 
 	if (transition_frequency(data, newstate)) {
 		printk(KERN_ERR PFX "transition frequency failed\n");
 		ret = 1;
+		up(&fidvid_sem);
 		goto err_out;
 	}
 
+	/* Update all the fid/vids of our siblings */
+	for_each_cpu_mask(i, cpu_core_map[pol->cpu]) {
+		powernow_data[i]->currvid = data->currvid;
+		powernow_data[i]->currfid = data->currfid;
+	}	
+	up(&fidvid_sem);
+
 	pol->cur = find_khz_freq_from_fid(data->currfid);
 	ret = 0;
 
@@ -962,7 +999,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
 		 */
 
 		if ((num_online_cpus() != 1) || (num_possible_cpus() != 1)) {
-			printk(KERN_INFO PFX "MP systems not supported by PSB BIOS structure\n");
+			printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n");
 			kfree(data);
 			return -ENODEV;
 		}
@@ -1003,6 +1040,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
 	schedule();
 
 	pol->governor = CPUFREQ_DEFAULT_GOVERNOR;
+	pol->cpus = cpu_core_map[pol->cpu];
 
 	/* Take a crude guess here. 
 	 * That guess was in microseconds, so multiply with 1000 */
@@ -1069,7 +1107,7 @@ static unsigned int powernowk8_get (unsigned int cpu)
 		return 0;
 	}
 	preempt_disable();
-
+	
 	if (query_current_values_with_pending_wait(data))
 		goto out;
 
@@ -1127,9 +1165,10 @@ static void __exit powernowk8_exit(void)
 	cpufreq_unregister_driver(&cpufreq_amd64_driver);
 }
 
-MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com>");
+MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com> and Mark Langsdorf <mark.langsdorf@amd.com.");
 MODULE_DESCRIPTION("AMD Athlon 64 and Opteron processor frequency driver.");
 MODULE_LICENSE("GPL");
 
 late_initcall(powernowk8_init);
 module_exit(powernowk8_exit);
+

arch/i386/kernel/cpu/cpufreq/powernow-k8.h

@@ -174,3 +174,18 @@ static int core_voltage_post_transition(struct powernow_k8_data *data, u32 reqvi
 static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid);
 
 static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index);
+
+#ifndef for_each_cpu_mask
+#define for_each_cpu_mask(i,mask) for (i=0;i<1;i++)
+#endif
+                                                                                
+#ifdef CONFIG_SMP
+static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
+{
+}
+#else
+static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])
+{
+	cpu_set(0, cpu_sharedcore_mask[0]);
+}
+#endif

arch/i386/kernel/cpu/cpufreq/sc520_freq.c

@@ -0,0 +1,186 @@
+/*
+ *	sc520_freq.c: cpufreq driver for the AMD Elan sc520
+ *
+ *	Copyright (C) 2005 Sean Young <sean@mess.org>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ *
+ *	Based on elanfreq.c
+ *
+ *	2005-03-30: - initial revision
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/delay.h>
+#include <linux/cpufreq.h>
+
+#include <asm/msr.h>
+#include <asm/timex.h>
+#include <asm/io.h>
+
+#define MMCR_BASE	0xfffef000	/* The default base address */
+#define OFFS_CPUCTL	0x2   /* CPU Control Register */
+
+static __u8 __iomem *cpuctl;
+
+#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "sc520_freq", msg)
+
+static struct cpufreq_frequency_table sc520_freq_table[] = {
+	{0x01,	100000},
+	{0x02,	133000},
+	{0,	CPUFREQ_TABLE_END},
+};
+
+static unsigned int sc520_freq_get_cpu_frequency(unsigned int cpu)
+{
+	u8 clockspeed_reg = *cpuctl;
+
+	switch (clockspeed_reg & 0x03) {
+	default:
+		printk(KERN_ERR "sc520_freq: error: cpuctl register has unexpected value %02x\n", clockspeed_reg);
+	case 0x01:
+		return 100000;
+	case 0x02:
+		return 133000;
+	}
+}
+
+static void sc520_freq_set_cpu_state (unsigned int state)
+{
+
+	struct cpufreq_freqs	freqs;
+	u8 clockspeed_reg;
+
+	freqs.old = sc520_freq_get_cpu_frequency(0);
+	freqs.new = sc520_freq_table[state].frequency;
+	freqs.cpu = 0; /* AMD Elan is UP */
+
+	cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+
+	dprintk("attempting to set frequency to %i kHz\n",
+			sc520_freq_table[state].frequency);
+
+	local_irq_disable();
+
+	clockspeed_reg = *cpuctl & ~0x03;
+	*cpuctl = clockspeed_reg | sc520_freq_table[state].index;
+
+	local_irq_enable();
+
+	cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+};
+
+static int sc520_freq_verify (struct cpufreq_policy *policy)
+{
+	return cpufreq_frequency_table_verify(policy, &sc520_freq_table[0]);
+}
+
+static int sc520_freq_target (struct cpufreq_policy *policy,
+			    unsigned int target_freq,
+			    unsigned int relation)
+{
+	unsigned int newstate = 0;
+
+	if (cpufreq_frequency_table_target(policy, sc520_freq_table, target_freq, relation, &newstate))
+		return -EINVAL;
+
+	sc520_freq_set_cpu_state(newstate);
+
+	return 0;
+}
+
+
+/*
+ *	Module init and exit code
+ */
+
+static int sc520_freq_cpu_init(struct cpufreq_policy *policy)
+{
+	struct cpuinfo_x86 *c = cpu_data;
+	int result;
+
+	/* capability check */
+	if (c->x86_vendor != X86_VENDOR_AMD ||
+	    c->x86 != 4 || c->x86_model != 9)
+		return -ENODEV;
+
+	/* cpuinfo and default policy values */
+	policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
+	policy->cpuinfo.transition_latency = 1000000; /* 1ms */
+	policy->cur = sc520_freq_get_cpu_frequency(0);
+
+	result = cpufreq_frequency_table_cpuinfo(policy, sc520_freq_table);
+	if (result)
+		return (result);
+
+	cpufreq_frequency_table_get_attr(sc520_freq_table, policy->cpu);
+
+	return 0;
+}
+
+
+static int sc520_freq_cpu_exit(struct cpufreq_policy *policy)
+{
+	cpufreq_frequency_table_put_attr(policy->cpu);
+	return 0;
+}
+
+
+static struct freq_attr* sc520_freq_attr[] = {
+	&cpufreq_freq_attr_scaling_available_freqs,
+	NULL,
+};
+
+
+static struct cpufreq_driver sc520_freq_driver = {
+	.get	= sc520_freq_get_cpu_frequency,
+	.verify	= sc520_freq_verify,
+	.target	= sc520_freq_target,
+	.init	= sc520_freq_cpu_init,
+	.exit	= sc520_freq_cpu_exit,
+	.name	= "sc520_freq",
+	.owner	= THIS_MODULE,
+	.attr	= sc520_freq_attr,
+};
+
+
+static int __init sc520_freq_init(void)
+{
+	struct cpuinfo_x86 *c = cpu_data;
+
+	/* Test if we have the right hardware */
+	if(c->x86_vendor != X86_VENDOR_AMD ||
+				c->x86 != 4 || c->x86_model != 9) {
+		dprintk("no Elan SC520 processor found!\n");
+		return -ENODEV;
+	}
+	cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1);
+	if(!cpuctl) {
+		printk(KERN_ERR "sc520_freq: error: failed to remap memory\n");
+		return -ENOMEM;
+	}
+
+	return cpufreq_register_driver(&sc520_freq_driver);
+}
+
+
+static void __exit sc520_freq_exit(void)
+{
+	cpufreq_unregister_driver(&sc520_freq_driver);
+	iounmap(cpuctl);
+}
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sean Young <sean@mess.org>");
+MODULE_DESCRIPTION("cpufreq driver for AMD's Elan sc520 CPU");
+
+module_init(sc520_freq_init);
+module_exit(sc520_freq_exit);
+

arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c

@@ -54,6 +54,8 @@ enum {
 	CPU_DOTHAN_A1,
 	CPU_DOTHAN_A2,
 	CPU_DOTHAN_B0,
+	CPU_MP4HT_D0,
+	CPU_MP4HT_E0,
 };
 
 static const struct cpu_id cpu_ids[] = {
@@ -61,6 +63,8 @@ static const struct cpu_id cpu_ids[] = {
 	[CPU_DOTHAN_A1]	= { 6, 13, 1 },
 	[CPU_DOTHAN_A2]	= { 6, 13, 2 },
 	[CPU_DOTHAN_B0]	= { 6, 13, 6 },
+	[CPU_MP4HT_D0]	= {15,  3, 4 },
+	[CPU_MP4HT_E0]	= {15,  4, 1 },
 };
 #define N_IDS	(sizeof(cpu_ids)/sizeof(cpu_ids[0]))
 
@@ -226,6 +230,8 @@ static struct cpu_model models[] =
 	{ &cpu_ids[CPU_DOTHAN_A1], NULL, 0, NULL },
 	{ &cpu_ids[CPU_DOTHAN_A2], NULL, 0, NULL },
 	{ &cpu_ids[CPU_DOTHAN_B0], NULL, 0, NULL },
+	{ &cpu_ids[CPU_MP4HT_D0], NULL, 0, NULL },
+	{ &cpu_ids[CPU_MP4HT_E0], NULL, 0, NULL },
 
 	{ NULL, }
 };

arch/i386/kernel/cpu/cpufreq/speedstep-lib.c

@@ -336,7 +336,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
 	if (!prev_speed)
 		return -EIO;
 
-	dprintk("previous seped is %u\n", prev_speed);
+	dprintk("previous speed is %u\n", prev_speed);
 	
 	local_irq_save(flags);
 
@@ -348,7 +348,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
 		goto out;
 	}
 
-	dprintk("low seped is %u\n", *low_speed);
+	dprintk("low speed is %u\n", *low_speed);
 
 	/* switch to high state */
 	set_state(SPEEDSTEP_HIGH);
@@ -358,7 +358,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
 		goto out;
 	}
 
-	dprintk("high seped is %u\n", *high_speed);
+	dprintk("high speed is %u\n", *high_speed);
 
 	if (*low_speed == *high_speed) {
 		ret = -ENODEV;

arch/i386/kernel/cpu/cpufreq/speedstep-smi.c

@@ -357,6 +357,9 @@ static int __init speedstep_init(void)
 	case SPEEDSTEP_PROCESSOR_PIII_C:
 	case SPEEDSTEP_PROCESSOR_PIII_C_EARLY:
 		break;
+	case SPEEDSTEP_PROCESSOR_P4M:
+		printk(KERN_INFO "speedstep-smi: you're trying to use this cpufreq driver on a Pentium 4-based CPU. Most likely it will not work.\n");
+		break;
 	default:
 		speedstep_processor = 0;
 	}

arch/i386/kernel/setup.c

@@ -1502,11 +1502,13 @@ void __init setup_arch(char **cmdline_p)
 	if (efi_enabled)
 		efi_map_memmap();
 
+#ifdef CONFIG_ACPI_BOOT
 	/*
 	 * Parse the ACPI tables for possible boot-time SMP configuration.
 	 */
 	acpi_boot_table_init();
 	acpi_boot_init();
+#endif
 
 #ifdef CONFIG_X86_LOCAL_APIC
 	if (smp_found_config)

arch/i386/kernel/timers/common.c

@@ -6,6 +6,7 @@
 #include <linux/timex.h>
 #include <linux/errno.h>
 #include <linux/jiffies.h>
+#include <linux/module.h>
 
 #include <asm/io.h>
 #include <asm/timer.h>
@@ -24,7 +25,7 @@
 
 #define CALIBRATE_TIME	(5 * 1000020/HZ)
 
-unsigned long __init calibrate_tsc(void)
+unsigned long calibrate_tsc(void)
 {
 	mach_prepare_counter();
 
@@ -139,7 +140,7 @@ bad_calibration:
 #endif
 
 /* calculate cpu_khz */
-void __init init_cpu_khz(void)
+void init_cpu_khz(void)
 {
 	if (cpu_has_tsc) {
 		unsigned long tsc_quotient = calibrate_tsc();
@@ -158,3 +159,4 @@ void __init init_cpu_khz(void)
 		}
 	}
 }
+

arch/i386/kernel/timers/timer_tsc.c

@@ -320,6 +320,26 @@ core_initcall(cpufreq_tsc);
 static inline void cpufreq_delayed_get(void) { return; }
 #endif 
 
+int recalibrate_cpu_khz(void)
+{
+#ifndef CONFIG_SMP
+	unsigned long cpu_khz_old = cpu_khz;
+
+	if (cpu_has_tsc) {
+		init_cpu_khz();
+		cpu_data[0].loops_per_jiffy =
+		    cpufreq_scale(cpu_data[0].loops_per_jiffy,
+			          cpu_khz_old,
+				  cpu_khz);
+		return 0;
+	} else
+		return -ENODEV;
+#else
+	return -ENODEV;
+#endif
+}
+EXPORT_SYMBOL(recalibrate_cpu_khz);
+
 static void mark_offset_tsc(void)
 {
 	unsigned long lost,delay;

arch/ia64/ia32/sys_ia32.c

@@ -2427,7 +2427,7 @@ sys32_epoll_wait(int epfd, struct epoll_event32 __user * events, int maxevents,
 {
 	struct epoll_event *events64 = NULL;
 	mm_segment_t old_fs = get_fs();
-	int error, numevents, size;
+	int numevents, size;
 	int evt_idx;
 	int do_free_pages = 0;
 

arch/ia64/kernel/entry.S

@@ -1182,7 +1182,7 @@ ENTRY(notify_resume_user)
 	;;
 (pNonSys) mov out2=0				// out2==0 => not a syscall
 	.fframe 16
-	.spillpsp ar.unat, 16			// (note that offset is relative to psp+0x10!)
+	.spillsp ar.unat, 16
 	st8 [sp]=r9,-16				// allocate space for ar.unat and save it
 	st8 [out1]=loc1,-8			// save ar.pfs, out1=&sigscratch
 	.body
@@ -1208,7 +1208,7 @@ GLOBAL_ENTRY(sys_rt_sigsuspend)
 	adds out2=8,sp				// out2=&sigscratch->ar_pfs
 	;;
 	.fframe 16
-	.spillpsp ar.unat, 16			// (note that offset is relative to psp+0x10!)
+	.spillsp ar.unat, 16
 	st8 [sp]=r9,-16				// allocate space for ar.unat and save it
 	st8 [out2]=loc1,-8			// save ar.pfs, out2=&sigscratch
 	.body

arch/ia64/kernel/mca.c

@@ -1103,8 +1103,6 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg, struct pt_regs *ptregs)
 	return IRQ_HANDLED;
 }
 
-#endif /* CONFIG_ACPI */
-
 /*
  *  ia64_mca_cpe_poll
  *
@@ -1122,6 +1120,8 @@ ia64_mca_cpe_poll (unsigned long dummy)
 	platform_send_ipi(first_cpu(cpu_online_map), IA64_CPEP_VECTOR, IA64_IPI_DM_INT, 0);
 }
 
+#endif /* CONFIG_ACPI */
+
 /*
  * C portion of the OS INIT handler
  *
@@ -1390,8 +1390,7 @@ ia64_mca_init(void)
 	register_percpu_irq(IA64_MCA_WAKEUP_VECTOR, &mca_wkup_irqaction);
 
 #ifdef CONFIG_ACPI
-	/* Setup the CPEI/P vector and handler */
-	cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
+	/* Setup the CPEI/P handler */
 	register_percpu_irq(IA64_CPEP_VECTOR, &mca_cpep_irqaction);
 #endif
 
@@ -1436,6 +1435,7 @@ ia64_mca_late_init(void)
 
 #ifdef CONFIG_ACPI
 	/* Setup the CPEI/P vector and handler */
+	cpe_vector = acpi_request_vector(ACPI_INTERRUPT_CPEI);
 	init_timer(&cpe_poll_timer);
 	cpe_poll_timer.function = ia64_mca_cpe_poll;
 

arch/ia64/kernel/minstate.h

@@ -41,7 +41,7 @@
 (pKStk) addl r3=THIS_CPU(ia64_mca_data),r3;;							\
 (pKStk) ld8 r3 = [r3];;										\
 (pKStk) addl r3=IA64_MCA_CPU_INIT_STACK_OFFSET,r3;;						\
-(pKStk) addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3;						\
+(pKStk) addl r1=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r3;						\
 (pUStk)	mov ar.rsc=0;		/* set enforced lazy mode, pl 0, little-endian, loadrs=0 */	\
 (pUStk)	addl r22=IA64_RBS_OFFSET,r1;		/* compute base of register backing store */	\
 	;;											\
@@ -50,7 +50,6 @@
 (pUStk)	mov r23=ar.bspstore;				/* save ar.bspstore */			\
 (pUStk)	dep r22=-1,r22,61,3;			/* compute kernel virtual addr of RBS */	\
 	;;											\
-(pKStk) addl r1=-IA64_PT_REGS_SIZE,r1;		/* if in kernel mode, use sp (r12) */		\
 (pUStk)	mov ar.bspstore=r22;			/* switch to kernel RBS */			\
 	;;											\
 (pUStk)	mov r18=ar.bsp;										\

arch/ia64/kernel/perfmon.c

@@ -11,7 +11,7 @@
  * Version Perfmon-2.x is a rewrite of perfmon-1.x
  * by Stephane Eranian, Hewlett Packard Co.
  *
- * Copyright (C) 1999-2003, 2005  Hewlett Packard Co
+ * Copyright (C) 1999-2005  Hewlett Packard Co
  *               Stephane Eranian <eranian@hpl.hp.com>
  *               David Mosberger-Tang <davidm@hpl.hp.com>
  *
@@ -497,6 +497,9 @@ typedef struct {
 static pfm_stats_t		pfm_stats[NR_CPUS];
 static pfm_session_t		pfm_sessions;	/* global sessions information */
 
+static spinlock_t pfm_alt_install_check = SPIN_LOCK_UNLOCKED;
+static pfm_intr_handler_desc_t  *pfm_alt_intr_handler;
+
 static struct proc_dir_entry 	*perfmon_dir;
 static pfm_uuid_t		pfm_null_uuid = {0,};
 
@@ -606,6 +609,7 @@ DEFINE_PER_CPU(unsigned long, pfm_syst_info);
 DEFINE_PER_CPU(struct task_struct *, pmu_owner);
 DEFINE_PER_CPU(pfm_context_t  *, pmu_ctx);
 DEFINE_PER_CPU(unsigned long, pmu_activation_number);
+EXPORT_PER_CPU_SYMBOL_GPL(pfm_syst_info);
 
 
 /* forward declaration */
@@ -1325,7 +1329,7 @@ pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
 error_conflict:
 	DPRINT(("system wide not possible, conflicting session [%d] on CPU%d\n",
   		pfm_sessions.pfs_sys_session[cpu]->pid,
-		smp_processor_id()));
+		cpu));
 abort:
 	UNLOCK_PFS(flags);
 
@@ -5555,26 +5559,32 @@ pfm_interrupt_handler(int irq, void *arg, struct pt_regs *regs)
 	int ret;
 
 	this_cpu = get_cpu();
-	min      = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min;
-	max      = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max;
+	if (likely(!pfm_alt_intr_handler)) {
+		min = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min;
+		max = pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max;
 
-	start_cycles = ia64_get_itc();
+		start_cycles = ia64_get_itc();
 
-	ret = pfm_do_interrupt_handler(irq, arg, regs);
+		ret = pfm_do_interrupt_handler(irq, arg, regs);
 
-	total_cycles = ia64_get_itc();
+		total_cycles = ia64_get_itc();
 
-	/*
-	 * don't measure spurious interrupts
-	 */
-	if (likely(ret == 0)) {
-		total_cycles -= start_cycles;
+		/*
+		 * don't measure spurious interrupts
+		 */
+		if (likely(ret == 0)) {
+			total_cycles -= start_cycles;
 
-		if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles;
-		if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles;
+			if (total_cycles < min) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_min = total_cycles;
+			if (total_cycles > max) pfm_stats[this_cpu].pfm_ovfl_intr_cycles_max = total_cycles;
 
-		pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles;
+			pfm_stats[this_cpu].pfm_ovfl_intr_cycles += total_cycles;
+		}
+	}
+	else {
+		(*pfm_alt_intr_handler->handler)(irq, arg, regs);
 	}
+
 	put_cpu_no_resched();
 	return IRQ_HANDLED;
 }
@@ -6425,6 +6435,141 @@ static struct irqaction perfmon_irqaction = {
 	.name    = "perfmon"
 };
 
+static void
+pfm_alt_save_pmu_state(void *data)
+{
+	struct pt_regs *regs;
+
+	regs = ia64_task_regs(current);
+
+	DPRINT(("called\n"));
+
+	/*
+	 * should not be necessary but
+	 * let's take not risk
+	 */
+	pfm_clear_psr_up();
+	pfm_clear_psr_pp();
+	ia64_psr(regs)->pp = 0;
+
+	/*
+	 * This call is required
+	 * May cause a spurious interrupt on some processors
+	 */
+	pfm_freeze_pmu();
+
+	ia64_srlz_d();
+}
+
+void
+pfm_alt_restore_pmu_state(void *data)
+{
+	struct pt_regs *regs;
+
+	regs = ia64_task_regs(current);
+
+	DPRINT(("called\n"));
+
+	/*
+	 * put PMU back in state expected
+	 * by perfmon
+	 */
+	pfm_clear_psr_up();
+	pfm_clear_psr_pp();
+	ia64_psr(regs)->pp = 0;
+
+	/*
+	 * perfmon runs with PMU unfrozen at all times
+	 */
+	pfm_unfreeze_pmu();
+
+	ia64_srlz_d();
+}
+
+int
+pfm_install_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
+{
+	int ret, i;
+	int reserve_cpu;
+
+	/* some sanity checks */
+	if (hdl == NULL || hdl->handler == NULL) return -EINVAL;
+
+	/* do the easy test first */
+	if (pfm_alt_intr_handler) return -EBUSY;
+
+	/* one at a time in the install or remove, just fail the others */
+	if (!spin_trylock(&pfm_alt_install_check)) {
+		return -EBUSY;
+	}
+
+	/* reserve our session */
+	for_each_online_cpu(reserve_cpu) {
+		ret = pfm_reserve_session(NULL, 1, reserve_cpu);
+		if (ret) goto cleanup_reserve;
+	}
+
+	/* save the current system wide pmu states */
+	ret = on_each_cpu(pfm_alt_save_pmu_state, NULL, 0, 1);
+	if (ret) {
+		DPRINT(("on_each_cpu() failed: %d\n", ret));
+		goto cleanup_reserve;
+	}
+
+	/* officially change to the alternate interrupt handler */
+	pfm_alt_intr_handler = hdl;
+
+	spin_unlock(&pfm_alt_install_check);
+
+	return 0;
+
+cleanup_reserve:
+	for_each_online_cpu(i) {
+		/* don't unreserve more than we reserved */
+		if (i >= reserve_cpu) break;
+
+		pfm_unreserve_session(NULL, 1, i);
+	}
+
+	spin_unlock(&pfm_alt_install_check);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pfm_install_alt_pmu_interrupt);
+
+int
+pfm_remove_alt_pmu_interrupt(pfm_intr_handler_desc_t *hdl)
+{
+	int i;
+	int ret;
+
+	if (hdl == NULL) return -EINVAL;
+
+	/* cannot remove someone else's handler! */
+	if (pfm_alt_intr_handler != hdl) return -EINVAL;
+
+	/* one at a time in the install or remove, just fail the others */
+	if (!spin_trylock(&pfm_alt_install_check)) {
+		return -EBUSY;
+	}
+
+	pfm_alt_intr_handler = NULL;
+
+	ret = on_each_cpu(pfm_alt_restore_pmu_state, NULL, 0, 1);
+	if (ret) {
+		DPRINT(("on_each_cpu() failed: %d\n", ret));
+	}
+
+	for_each_online_cpu(i) {
+		pfm_unreserve_session(NULL, 1, i);
+	}
+
+	spin_unlock(&pfm_alt_install_check);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pfm_remove_alt_pmu_interrupt);
+
 /*
  * perfmon initialization routine, called from the initcall() table
  */

arch/ia64/kernel/ptrace.c

@@ -692,16 +692,30 @@ convert_to_non_syscall (struct task_struct *child, struct pt_regs  *pt,
 			unsigned long cfm)
 {
 	struct unw_frame_info info, prev_info;
-	unsigned long ip, pr;
+	unsigned long ip, sp, pr;
 
 	unw_init_from_blocked_task(&info, child);
 	while (1) {
 		prev_info = info;
 		if (unw_unwind(&info) < 0)
 			return;
-		if (unw_get_rp(&info, &ip) < 0)
+
+		unw_get_sp(&info, &sp);
+		if ((long)((unsigned long)child + IA64_STK_OFFSET - sp)
+		    < IA64_PT_REGS_SIZE) {
+			dprintk("ptrace.%s: ran off the top of the kernel "
+				"stack\n", __FUNCTION__);
+			return;
+		}
+		if (unw_get_pr (&prev_info, &pr) < 0) {
+			unw_get_rp(&prev_info, &ip);
+			dprintk("ptrace.%s: failed to read "
+				"predicate register (ip=0x%lx)\n",
+				__FUNCTION__, ip);
 			return;
-		if (ip < FIXADDR_USER_END)
+		}
+		if (unw_is_intr_frame(&info)
+		    && (pr & (1UL << PRED_USER_STACK)))
 			break;
 	}
 

arch/ia64/kernel/smpboot.c

@@ -624,7 +624,7 @@ static struct {
 	__u16   thread_id;
 	__u16   proc_fixed_addr;
 	__u8    valid;
-}mt_info[NR_CPUS] __devinit;
+} mt_info[NR_CPUS] __devinitdata;
 
 #ifdef CONFIG_HOTPLUG_CPU
 static inline void

arch/ia64/kernel/sys_ia64.c

@@ -182,13 +182,6 @@ do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, un
 		}
 	}
 
-	/*
-	 * A zero mmap always succeeds in Linux, independent of whether or not the
-	 * remaining arguments are valid.
-	 */
-	if (len == 0)
-		goto out;
-
 	/* Careful about overflows.. */
 	len = PAGE_ALIGN(len);
 	if (!len || len > TASK_SIZE) {

arch/ia64/sn/kernel/setup.c

@@ -271,6 +271,8 @@ void __init sn_setup(char **cmdline_p)
 	int major = sn_sal_rev_major(), minor = sn_sal_rev_minor();
 	extern void sn_cpu_init(void);
 
+	ia64_sn_plat_set_error_handling_features();
+
 	/*
 	 * If the generic code has enabled vga console support - lets
 	 * get rid of it again. This is a kludge for the fact that ACPI

arch/m68knommu/kernel/process.c

@@ -45,11 +45,13 @@ asmlinkage void ret_from_fork(void);
  */
 void default_idle(void)
 {
-	while(1) {
-		if (need_resched())
-			__asm__("stop #0x2000" : : : "cc");
-		schedule();
+	local_irq_disable();
+ 	while (!need_resched()) {
+		/* This stop will re-enable interrupts */
+ 		__asm__("stop #0x2000" : : : "cc");
+		local_irq_disable();
 	}
+	local_irq_enable();
 }
 
 void (*idle)(void) = default_idle;
@@ -63,7 +65,12 @@ void (*idle)(void) = default_idle;
 void cpu_idle(void)
 {
 	/* endless idle loop with no priority at all */
-	idle();
+	while (1) {
+		idle();
+		preempt_enable_no_resched();
+		schedule();
+		preempt_disable();
+	}
 }
 
 void machine_restart(char * __unused)

arch/ppc/kernel/cputable.c

@@ -838,6 +838,17 @@ struct cpu_spec	cpu_specs[] = {
 		.icache_bsize		= 32,
 		.dcache_bsize		= 32,
 	},
+	{	/* 405EP */
+		.pvr_mask		= 0xffff0000,
+		.pvr_value		= 0x51210000,
+		.cpu_name		= "405EP",
+		.cpu_features		= CPU_FTR_SPLIT_ID_CACHE |
+			CPU_FTR_USE_TB,
+		.cpu_user_features	= PPC_FEATURE_32 |
+			PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
+		.icache_bsize		= 32,
+		.dcache_bsize		= 32,
+	},
 
 #endif /* CONFIG_40x */
 #ifdef CONFIG_44x

arch/ppc/kernel/misc.S

@@ -619,7 +619,7 @@ _GLOBAL(flush_instruction_cache)
 _GLOBAL(flush_icache_range)
 BEGIN_FTR_SECTION
 	blr				/* for 601, do nothing */
-END_FTR_SECTION_IFSET(PPC_FEATURE_UNIFIED_CACHE)
+END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
 	li	r5,L1_CACHE_LINE_SIZE-1
 	andc	r3,r3,r5
 	subf	r4,r3,r4
@@ -736,7 +736,7 @@ _GLOBAL(flush_dcache_all)
 _GLOBAL(__flush_dcache_icache)
 BEGIN_FTR_SECTION
 	blr					/* for 601, do nothing */
-END_FTR_SECTION_IFSET(PPC_FEATURE_UNIFIED_CACHE)
+END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
 	rlwinm	r3,r3,0,0,19			/* Get page base address */
 	li	r4,4096/L1_CACHE_LINE_SIZE	/* Number of lines in a page */
 	mtctr	r4
@@ -764,7 +764,7 @@ END_FTR_SECTION_IFSET(PPC_FEATURE_UNIFIED_CACHE)
 _GLOBAL(__flush_dcache_icache_phys)
 BEGIN_FTR_SECTION
 	blr					/* for 601, do nothing */
-END_FTR_SECTION_IFSET(PPC_FEATURE_UNIFIED_CACHE)
+END_FTR_SECTION_IFCLR(CPU_FTR_SPLIT_ID_CACHE)
 	mfmsr	r10
 	rlwinm	r0,r10,0,28,26			/* clear DR */
 	mtmsr	r0

arch/ppc/syslib/prom_init.c

@@ -626,8 +626,18 @@ inspect_node(phandle node, struct device_node *dad,
 	l = call_prom("package-to-path", 3, 1, node,
 		      mem_start, mem_end - mem_start);
 	if (l >= 0) {
+		char *p, *ep;
+
 		np->full_name = PTRUNRELOC((char *) mem_start);
 		*(char *)(mem_start + l) = 0;
+		/* Fixup an Apple bug where they have bogus \0 chars in the
+		 * middle of the path in some properties
+		 */
+		for (p = (char *)mem_start, ep = p + l; p < ep; p++)
+			if ((*p) == '\0') {
+				memmove(p, p+1, ep - p);
+				ep--;
+			}
 		mem_start = ALIGNUL(mem_start + l + 1);
 	}
 

arch/ppc64/kernel/entry.S

@@ -436,15 +436,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
 	REST_8GPRS(14, r1)
 	REST_10GPRS(22, r1)
 
-#ifdef CONFIG_PPC_ISERIES
-	clrrdi	r7,r1,THREAD_SHIFT	/* get current_thread_info() */
-	ld	r7,TI_FLAGS(r7)		/* Get run light flag */
-	mfspr	r9,CTRLF
-	srdi	r7,r7,TIF_RUN_LIGHT
-	insrdi	r9,r7,1,63		/* Insert run light into CTRL */
-	mtspr	CTRLT,r9
-#endif
-
 	/* convert old thread to its task_struct for return value */
 	addi	r3,r3,-THREAD
 	ld	r7,_NIP(r1)	/* Return to _switch caller in new task */

arch/ppc64/kernel/head.S

@@ -626,10 +626,10 @@ system_reset_iSeries:
 	lhz	r24,PACAPACAINDEX(r13)	/* Get processor # */
 	cmpwi	0,r24,0			/* Are we processor 0? */
 	beq	.__start_initialization_iSeries	/* Start up the first processor */
-	mfspr	r4,CTRLF
-	li	r5,RUNLATCH		/* Turn off the run light */
+	mfspr	r4,SPRN_CTRLF
+	li	r5,CTRL_RUNLATCH	/* Turn off the run light */
 	andc	r4,r4,r5
-	mtspr	CTRLT,r4
+	mtspr	SPRN_CTRLT,r4
 
 1:
 	HMT_LOW
@@ -2082,9 +2082,9 @@ _GLOBAL(hmt_start_secondary)
 	mfspr	r4, HID0
 	ori	r4, r4, 0x1
 	mtspr	HID0, r4
-	mfspr	r4, CTRLF
+	mfspr	r4, SPRN_CTRLF
 	oris	r4, r4, 0x40
-	mtspr	CTRLT, r4
+	mtspr	SPRN_CTRLT, r4
 	blr
 #endif
 

arch/ppc64/kernel/iSeries_setup.c

@@ -852,6 +852,28 @@ static int __init iSeries_src_init(void)
 
 late_initcall(iSeries_src_init);
 
+static int set_spread_lpevents(char *str)
+{
+	unsigned long i;
+	unsigned long val = simple_strtoul(str, NULL, 0);
+
+	/*
+	 * The parameter is the number of processors to share in processing
+	 * lp events.
+	 */
+	if (( val > 0) && (val <= NR_CPUS)) {
+		for (i = 1; i < val; ++i)
+			paca[i].lpqueue_ptr = paca[0].lpqueue_ptr;
+
+		printk("lpevent processing spread over %ld processors\n", val);
+	} else {
+		printk("invalid spread_lpevents %ld\n", val);
+	}
+
+	return 1;
+}
+__setup("spread_lpevents=", set_spread_lpevents);
+
 void __init iSeries_early_setup(void)
 {
 	iSeries_fixup_klimit();

arch/ppc64/kernel/idle.c

@@ -75,13 +75,9 @@ static int iSeries_idle(void)
 {
 	struct paca_struct *lpaca;
 	long oldval;
-	unsigned long CTRL;
 
 	/* ensure iSeries run light will be out when idle */
-	clear_thread_flag(TIF_RUN_LIGHT);
-	CTRL = mfspr(CTRLF);
-	CTRL &= ~RUNLATCH;
-	mtspr(CTRLT, CTRL);
+	ppc64_runlatch_off();
 
 	lpaca = get_paca();
 
@@ -111,7 +107,9 @@ static int iSeries_idle(void)
 			}
 		}
 
+		ppc64_runlatch_on();
 		schedule();
+		ppc64_runlatch_off();
 	}
 
 	return 0;

arch/ppc64/kernel/pSeries_reconfig.c

@@ -47,14 +47,6 @@ static void remove_node_proc_entries(struct device_node *np)
 		remove_proc_entry(pp->name, np->pde);
 		pp = pp->next;
 	}
-
-	/* Assuming that symlinks have the same parent directory as
-	 * np->pde.
-	 */
-	if (np->name_link)
-		remove_proc_entry(np->name_link->name, parent->pde);
-	if (np->addr_link)
-		remove_proc_entry(np->addr_link->name, parent->pde);
 	if (np->pde)
 		remove_proc_entry(np->pde->name, parent->pde);
 }

arch/ppc64/kernel/process.c

@@ -378,9 +378,6 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 		childregs->gpr[1] = sp + sizeof(struct pt_regs);
 		p->thread.regs = NULL;	/* no user register state */
 		clear_ti_thread_flag(p->thread_info, TIF_32BIT);
-#ifdef CONFIG_PPC_ISERIES
-		set_ti_thread_flag(p->thread_info, TIF_RUN_LIGHT);
-#endif
 	} else {
 		childregs->gpr[1] = usp;
 		p->thread.regs = childregs;

arch/ppc64/kernel/prom_init.c

@@ -211,13 +211,23 @@ struct {
  */
 #define ADDR(x)		(u32) ((unsigned long)(x) - offset)
 
+/*
+ * Error results ... some OF calls will return "-1" on error, some
+ * will return 0, some will return either. To simplify, here are
+ * macros to use with any ihandle or phandle return value to check if
+ * it is valid
+ */
+
+#define PROM_ERROR		(-1u)
+#define PHANDLE_VALID(p)	((p) != 0 && (p) != PROM_ERROR)
+#define IHANDLE_VALID(i)	((i) != 0 && (i) != PROM_ERROR)
+
+
 /* This is the one and *ONLY* place where we actually call open
  * firmware from, since we need to make sure we're running in 32b
  * mode when we do.  We switch back to 64b mode upon return.
  */
 
-#define PROM_ERROR	(-1)
-
 static int __init call_prom(const char *service, int nargs, int nret, ...)
 {
 	int i;
@@ -587,14 +597,13 @@ static void __init prom_send_capabilities(void)
 {
 	unsigned long offset = reloc_offset();
 	ihandle elfloader;
-	int ret;
 
 	elfloader = call_prom("open", 1, 1, ADDR("/packages/elf-loader"));
 	if (elfloader == 0) {
 		prom_printf("couldn't open /packages/elf-loader\n");
 		return;
 	}
-	ret = call_prom("call-method", 3, 1, ADDR("process-elf-header"),
+	call_prom("call-method", 3, 1, ADDR("process-elf-header"),
 			elfloader, ADDR(&fake_elf));
 	call_prom("close", 1, 0, elfloader);
 }
@@ -646,7 +655,7 @@ static unsigned long __init alloc_up(unsigned long size, unsigned long align)
 	    base = _ALIGN_UP(base + 0x100000, align)) {
 		prom_debug("    trying: 0x%x\n\r", base);
 		addr = (unsigned long)prom_claim(base, size, 0);
-		if ((int)addr != PROM_ERROR)
+		if (addr != PROM_ERROR)
 			break;
 		addr = 0;
 		if (align == 0)
@@ -708,7 +717,7 @@ static unsigned long __init alloc_down(unsigned long size, unsigned long align,
 	for(; base > RELOC(alloc_bottom); base = _ALIGN_DOWN(base - 0x100000, align))  {
 		prom_debug("    trying: 0x%x\n\r", base);
 		addr = (unsigned long)prom_claim(base, size, 0);
-		if ((int)addr != PROM_ERROR)
+		if (addr != PROM_ERROR)
 			break;
 		addr = 0;
 	}
@@ -902,18 +911,19 @@ static void __init prom_instantiate_rtas(void)
 {
 	unsigned long offset = reloc_offset();
 	struct prom_t *_prom = PTRRELOC(&prom);
-	phandle prom_rtas, rtas_node;
+	phandle rtas_node;
+	ihandle rtas_inst;
 	u32 base, entry = 0;
 	u32 size = 0;
 
 	prom_debug("prom_instantiate_rtas: start...\n");
 
-	prom_rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
-	prom_debug("prom_rtas: %x\n", prom_rtas);
-	if (prom_rtas == (phandle) -1)
+	rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas"));
+	prom_debug("rtas_node: %x\n", rtas_node);
+	if (!PHANDLE_VALID(rtas_node))
 		return;
 
-	prom_getprop(prom_rtas, "rtas-size", &size, sizeof(size));
+	prom_getprop(rtas_node, "rtas-size", &size, sizeof(size));
 	if (size == 0)
 		return;
 
@@ -922,14 +932,18 @@ static void __init prom_instantiate_rtas(void)
 		prom_printf("RTAS allocation failed !\n");
 		return;
 	}
-	prom_printf("instantiating rtas at 0x%x", base);
 
-	rtas_node = call_prom("open", 1, 1, ADDR("/rtas"));
-	prom_printf("...");
+	rtas_inst = call_prom("open", 1, 1, ADDR("/rtas"));
+	if (!IHANDLE_VALID(rtas_inst)) {
+		prom_printf("opening rtas package failed");
+		return;
+	}
+
+	prom_printf("instantiating rtas at 0x%x ...", base);
 
 	if (call_prom("call-method", 3, 2,
 		      ADDR("instantiate-rtas"),
-		      rtas_node, base) != PROM_ERROR) {
+		      rtas_inst, base) != PROM_ERROR) {
 		entry = (long)_prom->args.rets[1];
 	}
 	if (entry == 0) {
@@ -940,8 +954,8 @@ static void __init prom_instantiate_rtas(void)
 
 	reserve_mem(base, size);
 
-	prom_setprop(prom_rtas, "linux,rtas-base", &base, sizeof(base));
-	prom_setprop(prom_rtas, "linux,rtas-entry", &entry, sizeof(entry));
+	prom_setprop(rtas_node, "linux,rtas-base", &base, sizeof(base));
+	prom_setprop(rtas_node, "linux,rtas-entry", &entry, sizeof(entry));
 
 	prom_debug("rtas base     = 0x%x\n", base);
 	prom_debug("rtas entry    = 0x%x\n", entry);
@@ -1062,7 +1076,7 @@ static void __init prom_initialize_tce_table(void)
 
 		prom_printf("opening PHB %s", path);
 		phb_node = call_prom("open", 1, 1, path);
-		if ( (long)phb_node <= 0)
+		if (phb_node == 0)
 			prom_printf("... failed\n");
 		else
 			prom_printf("... done\n");
@@ -1279,12 +1293,12 @@ static void __init prom_init_client_services(unsigned long pp)
 
 	/* get a handle for the stdout device */
 	_prom->chosen = call_prom("finddevice", 1, 1, ADDR("/chosen"));
-	if ((long)_prom->chosen <= 0)
+	if (!PHANDLE_VALID(_prom->chosen))
 		prom_panic("cannot find chosen"); /* msg won't be printed :( */
 
 	/* get device tree root */
 	_prom->root = call_prom("finddevice", 1, 1, ADDR("/"));
-	if ((long)_prom->root <= 0)
+	if (!PHANDLE_VALID(_prom->root))
 		prom_panic("cannot find device tree root"); /* msg won't be printed :( */
 }
 
@@ -1356,9 +1370,8 @@ static int __init prom_find_machine_type(void)
 	}
 	/* Default to pSeries. We need to know if we are running LPAR */
 	rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
-	if (rtas != (phandle) -1) {
-		unsigned long x;
-		x = prom_getproplen(rtas, "ibm,hypertas-functions");
+	if (PHANDLE_VALID(rtas)) {
+		int x = prom_getproplen(rtas, "ibm,hypertas-functions");
 		if (x != PROM_ERROR) {
 			prom_printf("Hypertas detected, assuming LPAR !\n");
 			return PLATFORM_PSERIES_LPAR;
@@ -1426,12 +1439,13 @@ static void __init prom_check_displays(void)
 		 * leave some room at the end of the path for appending extra
 		 * arguments
 		 */
-		if (call_prom("package-to-path", 3, 1, node, path, PROM_SCRATCH_SIZE-10) < 0)
+		if (call_prom("package-to-path", 3, 1, node, path,
+			      PROM_SCRATCH_SIZE-10) == PROM_ERROR)
 			continue;
 		prom_printf("found display   : %s, opening ... ", path);
 		
 		ih = call_prom("open", 1, 1, path);
-		if (ih == (ihandle)0 || ih == (ihandle)-1) {
+		if (ih == 0) {
 			prom_printf("failed\n");
 			continue;
 		}
@@ -1514,6 +1528,12 @@ static unsigned long __init dt_find_string(char *str)
 	return 0;
 }
 
+/*
+ * The Open Firmware 1275 specification states properties must be 31 bytes or
+ * less, however not all firmwares obey this. Make it 64 bytes to be safe.
+ */
+#define MAX_PROPERTY_NAME 64
+
 static void __init scan_dt_build_strings(phandle node, unsigned long *mem_start,
 					 unsigned long *mem_end)
 {
@@ -1527,10 +1547,12 @@ static void __init scan_dt_build_strings(phandle node, unsigned long *mem_start,
 	/* get and store all property names */
 	prev_name = RELOC("");
 	for (;;) {
-		
-		/* 32 is max len of name including nul. */
-		namep = make_room(mem_start, mem_end, 32, 1);
-		if (call_prom("nextprop", 3, 1, node, prev_name, namep) <= 0) {
+		int rc;
+
+		/* 64 is max len of name including nul. */
+		namep = make_room(mem_start, mem_end, MAX_PROPERTY_NAME, 1);
+		rc = call_prom("nextprop", 3, 1, node, prev_name, namep);
+		if (rc != 1) {
 			/* No more nodes: unwind alloc */
 			*mem_start = (unsigned long)namep;
 			break;
@@ -1555,18 +1577,12 @@ static void __init scan_dt_build_strings(phandle node, unsigned long *mem_start,
 	}
 }
 
-/*
- * The Open Firmware 1275 specification states properties must be 31 bytes or
- * less, however not all firmwares obey this. Make it 64 bytes to be safe.
- */
-#define MAX_PROPERTY_NAME 64
-
 static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
 					unsigned long *mem_end)
 {
 	int l, align;
 	phandle child;
-	char *namep, *prev_name, *sstart;
+	char *namep, *prev_name, *sstart, *p, *ep;
 	unsigned long soff;
 	unsigned char *valp;
 	unsigned long offset = reloc_offset();
@@ -1588,6 +1604,14 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
 			call_prom("package-to-path", 3, 1, node, namep, l);
 		}
 		namep[l] = '\0';
+		/* Fixup an Apple bug where they have bogus \0 chars in the
+		 * middle of the path in some properties
+		 */
+		for (p = namep, ep = namep + l; p < ep; p++)
+			if (*p == '\0') {
+				memmove(p, p+1, ep - p);
+				ep--; l--;
+			}
 		*mem_start = _ALIGN(((unsigned long) namep) + strlen(namep) + 1, 4);
 	}
 
@@ -1599,7 +1623,10 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
 	prev_name = RELOC("");
 	sstart = (char *)RELOC(dt_string_start);
 	for (;;) {
-		if (call_prom("nextprop", 3, 1, node, prev_name, pname) <= 0)
+		int rc;
+
+		rc = call_prom("nextprop", 3, 1, node, prev_name, pname);
+		if (rc != 1)
 			break;
 
 		/* find string offset */
@@ -1615,7 +1642,7 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
 		l = call_prom("getproplen", 2, 1, node, pname);
 
 		/* sanity checks */
-		if (l < 0)
+		if (l == PROM_ERROR)
 			continue;
 		if (l > MAX_PROPERTY_LENGTH) {
 			prom_printf("WARNING: ignoring large property ");
@@ -1763,17 +1790,18 @@ static void __init fixup_device_tree(void)
 
 	/* Some G5s have a missing interrupt definition, fix it up here */
 	u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000"));
-	if ((long)u3 <= 0)
+	if (!PHANDLE_VALID(u3))
 		return;
 	i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000"));
-	if ((long)i2c <= 0)
+	if (!PHANDLE_VALID(i2c))
 		return;
 	mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000"));
-	if ((long)mpic <= 0)
+	if (!PHANDLE_VALID(mpic))
 		return;
 
 	/* check if proper rev of u3 */
-	if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev)) <= 0)
+	if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev))
+	    == PROM_ERROR)
 		return;
 	if (u3_rev != 0x35)
 		return;
@@ -1880,6 +1908,12 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long
 	prom_setprop(_prom->chosen, "linux,platform",
 		     &getprop_rval, sizeof(getprop_rval));
 
+	/*
+	 * On pSeries, inform the firmware about our capabilities
+	 */
+	if (RELOC(of_platform) & PLATFORM_PSERIES)
+		prom_send_capabilities();
+
 	/*
 	 * On pSeries, copy the CPU hold code
 	 */

arch/ppc64/kernel/setup.c

@@ -103,11 +103,6 @@ extern void unflatten_device_tree(void);
 
 extern void smp_release_cpus(void);
 
-unsigned long decr_overclock = 1;
-unsigned long decr_overclock_proc0 = 1;
-unsigned long decr_overclock_set = 0;
-unsigned long decr_overclock_proc0_set = 0;
-
 int have_of = 1;
 int boot_cpuid = 0;
 int boot_cpuid_phys = 0;
@@ -1120,64 +1115,15 @@ void ppc64_dump_msg(unsigned int src, const char *msg)
 	printk("[dump]%04x %s\n", src, msg);
 }
 
-int set_spread_lpevents( char * str )
-{
-	/* The parameter is the number of processors to share in processing lp events */
-	unsigned long i;
-	unsigned long val = simple_strtoul( str, NULL, 0 );
-	if ( ( val > 0 ) && ( val <= NR_CPUS ) ) {
-		for ( i=1; i<val; ++i )
-			paca[i].lpqueue_ptr = paca[0].lpqueue_ptr;
-		printk("lpevent processing spread over %ld processors\n", val);
-	}
-	else
-		printk("invalid spreaqd_lpevents %ld\n", val);
-	return 1;
-}	
-
 /* This should only be called on processor 0 during calibrate decr */
 void setup_default_decr(void)
 {
 	struct paca_struct *lpaca = get_paca();
 
-	if ( decr_overclock_set && !decr_overclock_proc0_set )
-		decr_overclock_proc0 = decr_overclock;
-
-	lpaca->default_decr = tb_ticks_per_jiffy / decr_overclock_proc0;	
+	lpaca->default_decr = tb_ticks_per_jiffy;
 	lpaca->next_jiffy_update_tb = get_tb() + tb_ticks_per_jiffy;
 }
 
-int set_decr_overclock_proc0( char * str )
-{
-	unsigned long val = simple_strtoul( str, NULL, 0 );
-	if ( ( val >= 1 ) && ( val <= 48 ) ) {
-		decr_overclock_proc0_set = 1;
-		decr_overclock_proc0 = val;
-		printk("proc 0 decrementer overclock factor of %ld\n", val);
-	}
-	else
-		printk("invalid proc 0 decrementer overclock factor of %ld\n", val);
-	return 1;
-}
-
-int set_decr_overclock( char * str )
-{
-	unsigned long val = simple_strtoul( str, NULL, 0 );
-	if ( ( val >= 1 ) && ( val <= 48 ) ) {
-		decr_overclock_set = 1;
-		decr_overclock = val;
-		printk("decrementer overclock factor of %ld\n", val);
-	}
-	else
-		printk("invalid decrementer overclock factor of %ld\n", val);
-	return 1;
-
-}
-
-__setup("spread_lpevents=", set_spread_lpevents );
-__setup("decr_overclock_proc0=", set_decr_overclock_proc0 );
-__setup("decr_overclock=", set_decr_overclock );
-
 #ifndef CONFIG_PPC_ISERIES
 /*
  * This function can be used by platforms to "find" legacy serial ports.

arch/ppc64/kernel/smp.c

@@ -334,7 +334,6 @@ void smp_call_function_interrupt(void)
 	}
 }
 
-extern unsigned long decr_overclock;
 extern struct gettimeofday_struct do_gtod;
 
 struct thread_info *current_set[NR_CPUS];
@@ -491,7 +490,7 @@ int __devinit __cpu_up(unsigned int cpu)
 	if (smp_ops->cpu_bootable && !smp_ops->cpu_bootable(cpu))
 		return -EINVAL;
 
-	paca[cpu].default_decr = tb_ticks_per_jiffy / decr_overclock;
+	paca[cpu].default_decr = tb_ticks_per_jiffy;
 
 	if (!cpu_has_feature(CPU_FTR_SLB)) {
 		void *tmp;

arch/ppc64/kernel/sysfs.c

@@ -113,7 +113,6 @@ void ppc64_enable_pmcs(void)
 #ifdef CONFIG_PPC_PSERIES
 	unsigned long set, reset;
 	int ret;
-	unsigned int ctrl;
 #endif /* CONFIG_PPC_PSERIES */
 
 	/* Only need to enable them once */
@@ -167,11 +166,8 @@ void ppc64_enable_pmcs(void)
 	 * On SMT machines we have to set the run latch in the ctrl register
 	 * in order to make PMC6 spin.
 	 */
-	if (cpu_has_feature(CPU_FTR_SMT)) {
-		ctrl = mfspr(CTRLF);
-		ctrl |= RUNLATCH;
-		mtspr(CTRLT, ctrl);
-	}
+	if (cpu_has_feature(CPU_FTR_SMT))
+		ppc64_runlatch_on();
 #endif /* CONFIG_PPC_PSERIES */
 }
 

arch/ppc64/kernel/time.c

@@ -325,9 +325,7 @@ int timer_interrupt(struct pt_regs * regs)
 
 	irq_enter();
 
-#ifndef CONFIG_PPC_ISERIES
 	profile_tick(CPU_PROFILING, regs);
-#endif
 
 	lpaca->lppaca.int_dword.fields.decr_int = 0;
 

arch/s390/appldata/appldata_base.c

@@ -28,6 +28,7 @@
 //#include <linux/kernel_stat.h>
 #include <linux/notifier.h>
 #include <linux/cpu.h>
+#include <linux/workqueue.h>
 
 #include "appldata.h"
 
@@ -133,9 +134,12 @@ static int appldata_interval = APPLDATA_CPU_INTERVAL;
 static int appldata_timer_active;
 
 /*
- * Tasklet
+ * Work queue
  */
-static struct tasklet_struct appldata_tasklet_struct;
+static struct workqueue_struct *appldata_wq;
+static void appldata_work_fn(void *data);
+static DECLARE_WORK(appldata_work, appldata_work_fn, NULL);
+
 
 /*
  * Ops list
@@ -144,11 +148,11 @@ static DEFINE_SPINLOCK(appldata_ops_lock);
 static LIST_HEAD(appldata_ops_list);
 
 
-/************************* timer, tasklet, DIAG ******************************/
+/*************************** timer, work, DIAG *******************************/
 /*
  * appldata_timer_function()
  *
- * schedule tasklet and reschedule timer
+ * schedule work and reschedule timer
  */
 static void appldata_timer_function(unsigned long data, struct pt_regs *regs)
 {
@@ -157,22 +161,22 @@ static void appldata_timer_function(unsigned long data, struct pt_regs *regs)
 		atomic_read(&appldata_expire_count));
 	if (atomic_dec_and_test(&appldata_expire_count)) {
 		atomic_set(&appldata_expire_count, num_online_cpus());
-		tasklet_schedule((struct tasklet_struct *) data);
+		queue_work(appldata_wq, (struct work_struct *) data);
 	}
 }
 
 /*
- * appldata_tasklet_function()
+ * appldata_work_fn()
  *
  * call data gathering function for each (active) module
  */
-static void appldata_tasklet_function(unsigned long data)
+static void appldata_work_fn(void *data)
 {
 	struct list_head *lh;
 	struct appldata_ops *ops;
 	int i;
 
-	P_DEBUG("  -= Tasklet =-\n");
+	P_DEBUG("  -= Work Queue =-\n");
 	i = 0;
 	spin_lock(&appldata_ops_lock);
 	list_for_each(lh, &appldata_ops_list) {
@@ -231,7 +235,7 @@ static int appldata_diag(char record_nr, u16 function, unsigned long buffer,
 			: "=d" (ry) : "d" (&(appldata_parameter_list)) : "cc");
 	return (int) ry;
 }
-/********************** timer, tasklet, DIAG <END> ***************************/
+/************************ timer, work, DIAG <END> ****************************/
 
 
 /****************************** /proc stuff **********************************/
@@ -411,7 +415,7 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
 	struct list_head *lh;
 
 	found = 0;
-	spin_lock_bh(&appldata_ops_lock);
+	spin_lock(&appldata_ops_lock);
 	list_for_each(lh, &appldata_ops_list) {
 		tmp_ops = list_entry(lh, struct appldata_ops, list);
 		if (&tmp_ops->ctl_table[2] == ctl) {
@@ -419,15 +423,15 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
 		}
 	}
 	if (!found) {
-		spin_unlock_bh(&appldata_ops_lock);
+		spin_unlock(&appldata_ops_lock);
 		return -ENODEV;
 	}
 	ops = ctl->data;
 	if (!try_module_get(ops->owner)) {	// protect this function
-		spin_unlock_bh(&appldata_ops_lock);
+		spin_unlock(&appldata_ops_lock);
 		return -ENODEV;
 	}
-	spin_unlock_bh(&appldata_ops_lock);
+	spin_unlock(&appldata_ops_lock);
 
 	if (!*lenp || *ppos) {
 		*lenp = 0;
@@ -451,10 +455,11 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
 		return -EFAULT;
 	}
 
-	spin_lock_bh(&appldata_ops_lock);
+	spin_lock(&appldata_ops_lock);
 	if ((buf[0] == '1') && (ops->active == 0)) {
-		if (!try_module_get(ops->owner)) {	// protect tasklet
-			spin_unlock_bh(&appldata_ops_lock);
+		// protect work queue callback
+		if (!try_module_get(ops->owner)) {
+			spin_unlock(&appldata_ops_lock);
 			module_put(ops->owner);
 			return -ENODEV;
 		}
@@ -485,7 +490,7 @@ appldata_generic_handler(ctl_table *ctl, int write, struct file *filp,
 		}
 		module_put(ops->owner);
 	}
-	spin_unlock_bh(&appldata_ops_lock);
+	spin_unlock(&appldata_ops_lock);
 out:
 	*lenp = len;
 	*ppos += len;
@@ -529,7 +534,7 @@ int appldata_register_ops(struct appldata_ops *ops)
 	}
 	memset(ops->ctl_table, 0, 4*sizeof(struct ctl_table));
 
-	spin_lock_bh(&appldata_ops_lock);
+	spin_lock(&appldata_ops_lock);
 	list_for_each(lh, &appldata_ops_list) {
 		tmp_ops = list_entry(lh, struct appldata_ops, list);
 		P_DEBUG("register_ops loop: %i) name = %s, ctl = %i\n",
@@ -541,18 +546,18 @@ int appldata_register_ops(struct appldata_ops *ops)
 				APPLDATA_PROC_NAME_LENGTH) == 0) {
 			P_ERROR("Name \"%s\" already registered!\n", ops->name);
 			kfree(ops->ctl_table);
-			spin_unlock_bh(&appldata_ops_lock);
+			spin_unlock(&appldata_ops_lock);
 			return -EBUSY;
 		}
 		if (tmp_ops->ctl_nr == ops->ctl_nr) {
 			P_ERROR("ctl_nr %i already registered!\n", ops->ctl_nr);
 			kfree(ops->ctl_table);
-			spin_unlock_bh(&appldata_ops_lock);
+			spin_unlock(&appldata_ops_lock);
 			return -EBUSY;
 		}
 	}
 	list_add(&ops->list, &appldata_ops_list);
-	spin_unlock_bh(&appldata_ops_lock);
+	spin_unlock(&appldata_ops_lock);
 
 	ops->ctl_table[0].ctl_name = CTL_APPLDATA;
 	ops->ctl_table[0].procname = appldata_proc_name;
@@ -583,12 +588,12 @@ int appldata_register_ops(struct appldata_ops *ops)
  */
 void appldata_unregister_ops(struct appldata_ops *ops)
 {
-	spin_lock_bh(&appldata_ops_lock);
+	spin_lock(&appldata_ops_lock);
 	unregister_sysctl_table(ops->sysctl_header);
 	list_del(&ops->list);
 	kfree(ops->ctl_table);
 	ops->ctl_table = NULL;
-	spin_unlock_bh(&appldata_ops_lock);
+	spin_unlock(&appldata_ops_lock);
 	P_INFO("%s-ops unregistered!\n", ops->name);
 }
 /********************** module-ops management <END> **************************/
@@ -602,7 +607,7 @@ appldata_online_cpu(int cpu)
 	init_virt_timer(&per_cpu(appldata_timer, cpu));
 	per_cpu(appldata_timer, cpu).function = appldata_timer_function;
 	per_cpu(appldata_timer, cpu).data = (unsigned long)
-		&appldata_tasklet_struct;
+		&appldata_work;
 	atomic_inc(&appldata_expire_count);
 	spin_lock(&appldata_timer_lock);
 	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
@@ -615,7 +620,7 @@ appldata_offline_cpu(int cpu)
 	del_virt_timer(&per_cpu(appldata_timer, cpu));
 	if (atomic_dec_and_test(&appldata_expire_count)) {
 		atomic_set(&appldata_expire_count, num_online_cpus());
-		tasklet_schedule(&appldata_tasklet_struct);
+		queue_work(appldata_wq, &appldata_work);
 	}
 	spin_lock(&appldata_timer_lock);
 	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);
@@ -648,7 +653,7 @@ static struct notifier_block __devinitdata appldata_nb = {
 /*
  * appldata_init()
  *
- * init timer and tasklet, register /proc entries
+ * init timer, register /proc entries
  */
 static int __init appldata_init(void)
 {
@@ -657,6 +662,12 @@ static int __init appldata_init(void)
 	P_DEBUG("sizeof(parameter_list) = %lu\n",
 		sizeof(struct appldata_parameter_list));
 
+	appldata_wq = create_singlethread_workqueue("appldata");
+	if (!appldata_wq) {
+		P_ERROR("Could not create work queue\n");
+		return -ENOMEM;
+	}
+
 	for_each_online_cpu(i)
 		appldata_online_cpu(i);
 
@@ -670,7 +681,6 @@ static int __init appldata_init(void)
 	appldata_table[1].de->owner = THIS_MODULE;
 #endif
 
-	tasklet_init(&appldata_tasklet_struct, appldata_tasklet_function, 0);
 	P_DEBUG("Base interface initialized.\n");
 	return 0;
 }
@@ -678,7 +688,7 @@ static int __init appldata_init(void)
 /*
  * appldata_exit()
  *
- * stop timer and tasklet, unregister /proc entries
+ * stop timer, unregister /proc entries
  */
 static void __exit appldata_exit(void)
 {
@@ -690,7 +700,7 @@ static void __exit appldata_exit(void)
 	/*
 	 * ops list should be empty, but just in case something went wrong...
 	 */
-	spin_lock_bh(&appldata_ops_lock);
+	spin_lock(&appldata_ops_lock);
 	list_for_each(lh, &appldata_ops_list) {
 		ops = list_entry(lh, struct appldata_ops, list);
 		rc = appldata_diag(ops->record_nr, APPLDATA_STOP_REC,
@@ -700,7 +710,7 @@ static void __exit appldata_exit(void)
 				"return code: %d\n", ops->name, rc);
 		}
 	}
-	spin_unlock_bh(&appldata_ops_lock);
+	spin_unlock(&appldata_ops_lock);
 
 	for_each_online_cpu(i)
 		appldata_offline_cpu(i);
@@ -709,7 +719,7 @@ static void __exit appldata_exit(void)
 
 	unregister_sysctl_table(appldata_sysctl_header);
 
-	tasklet_kill(&appldata_tasklet_struct);
+	destroy_workqueue(appldata_wq);
 	P_DEBUG("... module unloaded!\n");
 }
 /**************************** init / exit <END> ******************************/

arch/s390/appldata/appldata_mem.c

@@ -68,7 +68,7 @@ struct appldata_mem_data {
 	u64 pgmajfault;		/* page faults (major only) */
 // <-- New in 2.6
 
-} appldata_mem_data;
+} __attribute__((packed)) appldata_mem_data;
 
 
 static inline void appldata_debug_print(struct appldata_mem_data *mem_data)

arch/s390/appldata/appldata_net_sum.c

@@ -57,7 +57,7 @@ struct appldata_net_sum_data {
 	u64 rx_dropped;		/* no space in linux buffers     */
 	u64 tx_dropped;		/* no space available in linux   */
 	u64 collisions;		/* collisions while transmitting */
-} appldata_net_sum_data;
+} __attribute__((packed)) appldata_net_sum_data;
 
 
 static inline void appldata_print_debug(struct appldata_net_sum_data *net_data)

arch/s390/appldata/appldata_os.c

@@ -49,7 +49,7 @@ struct appldata_os_per_cpu {
 	u32 per_cpu_softirq;	/* ... spent in softirqs            */
 	u32 per_cpu_iowait;	/* ... spent while waiting for I/O  */
 // <-- New in 2.6
-};
+} __attribute__((packed));
 
 struct appldata_os_data {
 	u64 timestamp;
@@ -75,7 +75,7 @@ struct appldata_os_data {
 
 	/* per cpu data */
 	struct appldata_os_per_cpu os_cpu[0];
-};
+} __attribute__((packed));
 
 static struct appldata_os_data *appldata_os_data;
 

arch/s390/kernel/ptrace.c

@@ -40,6 +40,7 @@
 #include <asm/pgalloc.h>
 #include <asm/system.h>
 #include <asm/uaccess.h>
+#include <asm/unistd.h>
 
 #ifdef CONFIG_S390_SUPPORT
 #include "compat_ptrace.h"
@@ -130,13 +131,19 @@ static int
 peek_user(struct task_struct *child, addr_t addr, addr_t data)
 {
 	struct user *dummy = NULL;
-	addr_t offset, tmp;
+	addr_t offset, tmp, mask;
 
 	/*
 	 * Stupid gdb peeks/pokes the access registers in 64 bit with
 	 * an alignment of 4. Programmers from hell...
 	 */
-	if ((addr & 3) || addr > sizeof(struct user) - __ADDR_MASK)
+	mask = __ADDR_MASK;
+#ifdef CONFIG_ARCH_S390X
+	if (addr >= (addr_t) &dummy->regs.acrs &&
+	    addr < (addr_t) &dummy->regs.orig_gpr2)
+		mask = 3;
+#endif
+	if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
 		return -EIO;
 
 	if (addr < (addr_t) &dummy->regs.acrs) {
@@ -153,6 +160,16 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data)
 		 * access registers are stored in the thread structure
 		 */
 		offset = addr - (addr_t) &dummy->regs.acrs;
+#ifdef CONFIG_ARCH_S390X
+		/*
+		 * Very special case: old & broken 64 bit gdb reading
+		 * from acrs[15]. Result is a 64 bit value. Read the
+		 * 32 bit acrs[15] value and shift it by 32. Sick...
+		 */
+		if (addr == (addr_t) &dummy->regs.acrs[15])
+			tmp = ((unsigned long) child->thread.acrs[15]) << 32;
+		else
+#endif
 		tmp = *(addr_t *)((addr_t) &child->thread.acrs + offset);
 
 	} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
@@ -167,6 +184,9 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data)
 		 */
 		offset = addr - (addr_t) &dummy->regs.fp_regs;
 		tmp = *(addr_t *)((addr_t) &child->thread.fp_regs + offset);
+		if (addr == (addr_t) &dummy->regs.fp_regs.fpc)
+			tmp &= (unsigned long) FPC_VALID_MASK
+				<< (BITS_PER_LONG - 32);
 
 	} else if (addr < (addr_t) (&dummy->regs.per_info + 1)) {
 		/*
@@ -191,13 +211,19 @@ static int
 poke_user(struct task_struct *child, addr_t addr, addr_t data)
 {
 	struct user *dummy = NULL;
-	addr_t offset;
+	addr_t offset, mask;
 
 	/*
 	 * Stupid gdb peeks/pokes the access registers in 64 bit with
 	 * an alignment of 4. Programmers from hell indeed...
 	 */
-	if ((addr & 3) || addr > sizeof(struct user) - __ADDR_MASK)
+	mask = __ADDR_MASK;
+#ifdef CONFIG_ARCH_S390X
+	if (addr >= (addr_t) &dummy->regs.acrs &&
+	    addr < (addr_t) &dummy->regs.orig_gpr2)
+		mask = 3;
+#endif
+	if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
 		return -EIO;
 
 	if (addr < (addr_t) &dummy->regs.acrs) {
@@ -224,6 +250,17 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
 		 * access registers are stored in the thread structure
 		 */
 		offset = addr - (addr_t) &dummy->regs.acrs;
+#ifdef CONFIG_ARCH_S390X
+		/*
+		 * Very special case: old & broken 64 bit gdb writing
+		 * to acrs[15] with a 64 bit value. Ignore the lower
+		 * half of the value and write the upper 32 bit to
+		 * acrs[15]. Sick...
+		 */
+		if (addr == (addr_t) &dummy->regs.acrs[15])
+			child->thread.acrs[15] = (unsigned int) (data >> 32);
+		else
+#endif
 		*(addr_t *)((addr_t) &child->thread.acrs + offset) = data;
 
 	} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
@@ -237,7 +274,8 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
 		 * floating point regs. are stored in the thread structure
 		 */
 		if (addr == (addr_t) &dummy->regs.fp_regs.fpc &&
-		    (data & ~FPC_VALID_MASK) != 0)
+		    (data & ~((unsigned long) FPC_VALID_MASK
+			      << (BITS_PER_LONG - 32))) != 0)
 			return -EINVAL;
 		offset = addr - (addr_t) &dummy->regs.fp_regs;
 		*(addr_t *)((addr_t) &child->thread.fp_regs + offset) = data;
@@ -722,6 +760,13 @@ syscall_trace(struct pt_regs *regs, int entryexit)
 	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
 				 ? 0x80 : 0));
 
+	/*
+	 * If the debuffer has set an invalid system call number,
+	 * we prepare to skip the system call restart handling.
+	 */
+	if (!entryexit && regs->gprs[2] >= NR_syscalls)
+		regs->trap = -1;
+
 	/*
 	 * this isn't the same as continuing with a signal, but it will do
 	 * for normal use.  strace only continues with a signal if the

arch/s390/mm/fault.c

@@ -207,7 +207,7 @@ do_exception(struct pt_regs *regs, unsigned long error_code, int is_protection)
 	 * we are not in an interrupt and that there is a 
 	 * user context.
 	 */
-        if (user_address == 0 || in_interrupt() || !mm)
+        if (user_address == 0 || in_atomic() || !mm)
                 goto no_context;
 
 	/*

arch/sparc64/kernel/pci_iommu.c

@@ -196,6 +196,34 @@ static iopte_t *alloc_consistent_cluster(struct pci_iommu *iommu, unsigned long
 	return NULL;
 }
 
+static int iommu_alloc_ctx(struct pci_iommu *iommu)
+{
+	int lowest = iommu->ctx_lowest_free;
+	int sz = IOMMU_NUM_CTXS - lowest;
+	int n = find_next_zero_bit(iommu->ctx_bitmap, sz, lowest);
+
+	if (unlikely(n == sz)) {
+		n = find_next_zero_bit(iommu->ctx_bitmap, lowest, 1);
+		if (unlikely(n == lowest)) {
+			printk(KERN_WARNING "IOMMU: Ran out of contexts.\n");
+			n = 0;
+		}
+	}
+	if (n)
+		__set_bit(n, iommu->ctx_bitmap);
+
+	return n;
+}
+
+static inline void iommu_free_ctx(struct pci_iommu *iommu, int ctx)
+{
+	if (likely(ctx)) {
+		__clear_bit(ctx, iommu->ctx_bitmap);
+		if (ctx < iommu->ctx_lowest_free)
+			iommu->ctx_lowest_free = ctx;
+	}
+}
+
 /* Allocate and map kernel buffer of size SIZE using consistent mode
  * DMA for PCI device PDEV.  Return non-NULL cpu-side address if
  * successful and set *DMA_ADDRP to the PCI side dma address.
@@ -236,7 +264,7 @@ void *pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_ad
 	npages = size >> IO_PAGE_SHIFT;
 	ctx = 0;
 	if (iommu->iommu_ctxflush)
-		ctx = iommu->iommu_cur_ctx++;
+		ctx = iommu_alloc_ctx(iommu);
 	first_page = __pa(first_page);
 	while (npages--) {
 		iopte_val(*iopte) = (IOPTE_CONSISTENT(ctx) |
@@ -317,6 +345,8 @@ void pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu, dma_addr_
 		}
 	}
 
+	iommu_free_ctx(iommu, ctx);
+
 	spin_unlock_irqrestore(&iommu->lock, flags);
 
 	order = get_order(size);
@@ -360,7 +390,7 @@ dma_addr_t pci_map_single(struct pci_dev *pdev, void *ptr, size_t sz, int direct
 	base_paddr = __pa(oaddr & IO_PAGE_MASK);
 	ctx = 0;
 	if (iommu->iommu_ctxflush)
-		ctx = iommu->iommu_cur_ctx++;
+		ctx = iommu_alloc_ctx(iommu);
 	if (strbuf->strbuf_enabled)
 		iopte_protection = IOPTE_STREAMING(ctx);
 	else
@@ -380,39 +410,53 @@ bad:
 	return PCI_DMA_ERROR_CODE;
 }
 
-static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages)
+static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages, int direction)
 {
 	int limit;
 
-	PCI_STC_FLUSHFLAG_INIT(strbuf);
 	if (strbuf->strbuf_ctxflush &&
 	    iommu->iommu_ctxflush) {
 		unsigned long matchreg, flushreg;
+		u64 val;
 
 		flushreg = strbuf->strbuf_ctxflush;
 		matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
 
-		limit = 100000;
 		pci_iommu_write(flushreg, ctx);
-		for(;;) {
-			if (((long)pci_iommu_read(matchreg)) >= 0L)
-				break;
-			limit--;
-			if (!limit)
-				break;
-			udelay(1);
+		val = pci_iommu_read(matchreg);
+		val &= 0xffff;
+		if (!val)
+			goto do_flush_sync;
+
+		while (val) {
+			if (val & 0x1)
+				pci_iommu_write(flushreg, ctx);
+			val >>= 1;
 		}
-		if (!limit)
+		val = pci_iommu_read(matchreg);
+		if (unlikely(val)) {
 			printk(KERN_WARNING "pci_strbuf_flush: ctx flush "
-			       "timeout vaddr[%08x] ctx[%lx]\n",
-			       vaddr, ctx);
+			       "timeout matchreg[%lx] ctx[%lx]\n",
+			       val, ctx);
+			goto do_page_flush;
+		}
 	} else {
 		unsigned long i;
 
+	do_page_flush:
 		for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
 			pci_iommu_write(strbuf->strbuf_pflush, vaddr);
 	}
 
+do_flush_sync:
+	/* If the device could not have possibly put dirty data into
+	 * the streaming cache, no flush-flag synchronization needs
+	 * to be performed.
+	 */
+	if (direction == PCI_DMA_TODEVICE)
+		return;
+
+	PCI_STC_FLUSHFLAG_INIT(strbuf);
 	pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
 	(void) pci_iommu_read(iommu->write_complete_reg);
 
@@ -466,7 +510,7 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
 
 	/* Step 1: Kick data out of streaming buffers if necessary. */
 	if (strbuf->strbuf_enabled)
-		pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+		pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
 
 	/* Step 2: Clear out first TSB entry. */
 	iopte_make_dummy(iommu, base);
@@ -474,6 +518,8 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
 	free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
 			       npages, ctx);
 
+	iommu_free_ctx(iommu, ctx);
+
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -613,7 +659,7 @@ int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems, int
 	/* Step 4: Choose a context if necessary. */
 	ctx = 0;
 	if (iommu->iommu_ctxflush)
-		ctx = iommu->iommu_cur_ctx++;
+		ctx = iommu_alloc_ctx(iommu);
 
 	/* Step 5: Create the mappings. */
 	if (strbuf->strbuf_enabled)
@@ -678,7 +724,7 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
 
 	/* Step 1: Kick data out of streaming buffers if necessary. */
 	if (strbuf->strbuf_enabled)
-		pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+		pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
 
 	/* Step 2: Clear out first TSB entry. */
 	iopte_make_dummy(iommu, base);
@@ -686,6 +732,8 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
 	free_streaming_cluster(iommu, bus_addr - iommu->page_table_map_base,
 			       npages, ctx);
 
+	iommu_free_ctx(iommu, ctx);
+
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -724,7 +772,7 @@ void pci_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_addr, size
 	}
 
 	/* Step 2: Kick data out of streaming buffers. */
-	pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+	pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
 
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
@@ -768,7 +816,7 @@ void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, i
 	i--;
 	npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length)
 		  - bus_addr) >> IO_PAGE_SHIFT;
-	pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
+	pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages, direction);
 
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }

arch/sparc64/kernel/pci_psycho.c

@@ -1212,7 +1212,7 @@ static void __init psycho_iommu_init(struct pci_controller_info *p)
 
 	/* Setup initial software IOMMU state. */
 	spin_lock_init(&iommu->lock);
-	iommu->iommu_cur_ctx = 0;
+	iommu->ctx_lowest_free = 1;
 
 	/* Register addresses. */
 	iommu->iommu_control  = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;

arch/sparc64/kernel/pci_sabre.c

@@ -1265,7 +1265,7 @@ static void __init sabre_iommu_init(struct pci_controller_info *p,
 
 	/* Setup initial software IOMMU state. */
 	spin_lock_init(&iommu->lock);
-	iommu->iommu_cur_ctx = 0;
+	iommu->ctx_lowest_free = 1;
 
 	/* Register addresses. */
 	iommu->iommu_control  = p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL;

arch/sparc64/kernel/pci_schizo.c

@@ -1753,7 +1753,7 @@ static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
 
 	/* Setup initial software IOMMU state. */
 	spin_lock_init(&iommu->lock);
-	iommu->iommu_cur_ctx = 0;
+	iommu->ctx_lowest_free = 1;
 
 	/* Register addresses, SCHIZO has iommu ctx flushing. */
 	iommu->iommu_control  = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;

arch/sparc64/kernel/sbus.c

@@ -117,17 +117,25 @@ static void iommu_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages
 
 #define STRBUF_TAG_VALID	0x02UL
 
-static void sbus_strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages)
+static void sbus_strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages, int direction)
 {
 	unsigned long n;
 	int limit;
 
-	iommu->strbuf_flushflag = 0UL;
 	n = npages;
 	while (n--)
 		upa_writeq(base + (n << IO_PAGE_SHIFT),
 			   iommu->strbuf_regs + STRBUF_PFLUSH);
 
+	/* If the device could not have possibly put dirty data into
+	 * the streaming cache, no flush-flag synchronization needs
+	 * to be performed.
+	 */
+	if (direction == SBUS_DMA_TODEVICE)
+		return;
+
+	iommu->strbuf_flushflag = 0UL;
+
 	/* Whoopee cushion! */
 	upa_writeq(__pa(&iommu->strbuf_flushflag),
 		   iommu->strbuf_regs + STRBUF_FSYNC);
@@ -421,7 +429,7 @@ void sbus_unmap_single(struct sbus_dev *sdev, dma_addr_t dma_addr, size_t size,
 
 	spin_lock_irqsave(&iommu->lock, flags);
 	free_streaming_cluster(iommu, dma_base, size >> IO_PAGE_SHIFT);
-	sbus_strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT);
+	sbus_strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT, direction);
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -584,7 +592,7 @@ void sbus_unmap_sg(struct sbus_dev *sdev, struct scatterlist *sg, int nents, int
 	iommu = sdev->bus->iommu;
 	spin_lock_irqsave(&iommu->lock, flags);
 	free_streaming_cluster(iommu, dvma_base, size >> IO_PAGE_SHIFT);
-	sbus_strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT);
+	sbus_strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT, direction);
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -596,7 +604,7 @@ void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev, dma_addr_t base, size_t
 	size = (IO_PAGE_ALIGN(base + size) - (base & IO_PAGE_MASK));
 
 	spin_lock_irqsave(&iommu->lock, flags);
-	sbus_strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT);
+	sbus_strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT, direction);
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -620,7 +628,7 @@ void sbus_dma_sync_sg_for_cpu(struct sbus_dev *sdev, struct scatterlist *sg, int
 	size = IO_PAGE_ALIGN(sg[i].dma_address + sg[i].dma_length) - base;
 
 	spin_lock_irqsave(&iommu->lock, flags);
-	sbus_strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT);
+	sbus_strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT, direction);
 	spin_unlock_irqrestore(&iommu->lock, flags);
 }
 

arch/x86_64/Kconfig

@@ -305,6 +305,7 @@ config HPET_TIMER
 
 config X86_PM_TIMER
 	bool "PM timer"
+	depends on ACPI
 	default y
 	help
 	  Support the ACPI PM timer for time keeping. This is slow,

arch/x86_64/kernel/io_apic.c

@@ -37,6 +37,7 @@
 #include <asm/desc.h>
 #include <asm/proto.h>
 #include <asm/mach_apic.h>
+#include <asm/acpi.h>
 
 #define __apicdebuginit  __init
 

arch/x86_64/kernel/mpparse.c

@@ -30,6 +30,7 @@
 #include <asm/pgalloc.h>
 #include <asm/io_apic.h>
 #include <asm/proto.h>
+#include <asm/acpi.h>
 
 /* Have we found an MP table */
 int smp_found_config;

arch/x86_64/kernel/time.c

@@ -27,7 +27,9 @@
 #include <linux/bcd.h>
 #include <linux/kallsyms.h>
 #include <linux/acpi.h>
+#ifdef CONFIG_ACPI
 #include <acpi/achware.h>	/* for PM timer frequency */
+#endif
 #include <asm/8253pit.h>
 #include <asm/pgtable.h>
 #include <asm/vsyscall.h>

drivers/atm/Makefile

@@ -39,7 +39,8 @@ ifeq ($(CONFIG_ATM_FORE200E_PCA),y)
   fore_200e-objs		+= fore200e_pca_fw.o
   # guess the target endianess to choose the right PCA-200E firmware image
   ifeq ($(CONFIG_ATM_FORE200E_PCA_DEFAULT_FW),y)
-    CONFIG_ATM_FORE200E_PCA_FW = $(shell if test -n "`$(CC) -E -dM $(src)/../../include/asm/byteorder.h | grep ' __LITTLE_ENDIAN '`"; then echo $(obj)/pca200e.bin; else echo $(obj)/pca200e_ecd.bin2; fi)
+    byteorder.h			:= include$(if $(patsubst $(srctree),,$(objtree)),2)/asm/byteorder.h
+    CONFIG_ATM_FORE200E_PCA_FW	:= $(obj)/pca200e$(if $(shell $(CC) -E -dM $(byteorder.h) | grep ' __LITTLE_ENDIAN '),.bin,_ecd.bin2)
   endif
 endif
 

drivers/atm/fore200e.c

@@ -383,8 +383,7 @@ fore200e_shutdown(struct fore200e* fore200e)
     switch(fore200e->state) {
 
     case FORE200E_STATE_COMPLETE:
-	if (fore200e->stats)
-	    kfree(fore200e->stats);
+	kfree(fore200e->stats);
 
     case FORE200E_STATE_IRQ:
 	free_irq(fore200e->irq, fore200e->atm_dev);
@@ -963,8 +962,7 @@ fore200e_tx_irq(struct fore200e* fore200e)
 		entry, txq->tail, entry->vc_map, entry->skb);
 
 	/* free copy of misaligned data */
-	if (entry->data)
-	    kfree(entry->data);
+	kfree(entry->data);
 	
 	/* remove DMA mapping */
 	fore200e->bus->dma_unmap(fore200e, entry->tpd->tsd[ 0 ].buffer, entry->tpd->tsd[ 0 ].length,

drivers/atm/he.c

@@ -412,8 +412,7 @@ he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent)
 init_one_failure:
 	if (atm_dev)
 		atm_dev_deregister(atm_dev);
-	if (he_dev)
-		kfree(he_dev);
+	kfree(he_dev);
 	pci_disable_device(pci_dev);
 	return err;
 }
@@ -2534,8 +2533,7 @@ he_open(struct atm_vcc *vcc)
 open_failed:
 
 	if (err) {
-		if (he_vcc)
-			kfree(he_vcc);
+		kfree(he_vcc);
 		clear_bit(ATM_VF_ADDR, &vcc->flags);
 	}
 	else

drivers/atm/nicstar.c

@@ -676,10 +676,10 @@ static int __devinit ns_init_card(int i, struct pci_dev *pcidev)
    PRINTK("nicstar%d: RSQ base at 0x%x.\n", i, (u32) card->rsq.base);
       
    /* Initialize SCQ0, the only VBR SCQ used */
-   card->scq1 = (scq_info *) NULL;
-   card->scq2 = (scq_info *) NULL;
+   card->scq1 = NULL;
+   card->scq2 = NULL;
    card->scq0 = get_scq(VBR_SCQSIZE, NS_VRSCD0);
-   if (card->scq0 == (scq_info *) NULL)
+   if (card->scq0 == NULL)
    {
       printk("nicstar%d: can't get SCQ0.\n", i);
       error = 12;
@@ -993,24 +993,24 @@ static scq_info *get_scq(int size, u32 scd)
    int i;
 
    if (size != VBR_SCQSIZE && size != CBR_SCQSIZE)
-      return (scq_info *) NULL;
+      return NULL;
 
    scq = (scq_info *) kmalloc(sizeof(scq_info), GFP_KERNEL);
-   if (scq == (scq_info *) NULL)
-      return (scq_info *) NULL;
+   if (scq == NULL)
+      return NULL;
    scq->org = kmalloc(2 * size, GFP_KERNEL);
    if (scq->org == NULL)
    {
       kfree(scq);
-      return (scq_info *) NULL;
+      return NULL;
    }
    scq->skb = (struct sk_buff **) kmalloc(sizeof(struct sk_buff *) *
                                           (size / NS_SCQE_SIZE), GFP_KERNEL);
-   if (scq->skb == (struct sk_buff **) NULL)
+   if (scq->skb == NULL)
    {
       kfree(scq->org);
       kfree(scq);
-      return (scq_info *) NULL;
+      return NULL;
    }
    scq->num_entries = size / NS_SCQE_SIZE;
    scq->base = (ns_scqe *) ALIGN_ADDRESS(scq->org, size);
@@ -1498,7 +1498,7 @@ static int ns_open(struct atm_vcc *vcc)
          vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE;
 
          scq = get_scq(CBR_SCQSIZE, vc->cbr_scd);
-         if (scq == (scq_info *) NULL)
+         if (scq == NULL)
          {
             PRINTK("nicstar%d: can't get fixed rate SCQ.\n", card->index);
             card->scd2vc[frscdi] = NULL;

drivers/atm/zatm.c

@@ -902,7 +902,7 @@ static void close_tx(struct atm_vcc *vcc)
 		zatm_dev->tx_bw += vcc->qos.txtp.min_pcr;
 		dealloc_shaper(vcc->dev,zatm_vcc->shaper);
 	}
-	if (zatm_vcc->ring) kfree(zatm_vcc->ring);
+	kfree(zatm_vcc->ring);
 }
 
 
@@ -1339,12 +1339,9 @@ static int __init zatm_start(struct atm_dev *dev)
 	return 0;
     out:
 	for (i = 0; i < NR_MBX; i++)
-		if (zatm_dev->mbx_start[i] != 0)
-			kfree((void *) zatm_dev->mbx_start[i]);
-	if (zatm_dev->rx_map != NULL)
-		kfree(zatm_dev->rx_map);
-	if (zatm_dev->tx_map != NULL)
-		kfree(zatm_dev->tx_map);
+		kfree(zatm_dev->mbx_start[i]);
+	kfree(zatm_dev->rx_map);
+	kfree(zatm_dev->tx_map);
 	free_irq(zatm_dev->irq, dev);
 	return error;
 }

drivers/char/agp/agp.h

@@ -278,6 +278,8 @@ void agp3_generic_cleanup(void);
 #define AGP_GENERIC_SIZES_ENTRIES 11
 extern struct aper_size_info_16 agp3_generic_sizes[];
 
+#define virt_to_gart(x) (phys_to_gart(virt_to_phys(x)))
+#define gart_to_virt(x) (phys_to_virt(gart_to_phys(x)))
 
 extern int agp_off;
 extern int agp_try_unsupported_boot;

drivers/char/agp/ali-agp.c

@@ -150,7 +150,7 @@ static void *m1541_alloc_page(struct agp_bridge_data *bridge)
 	pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
 	pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
 			(((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
-			  virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN ));
+			  virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN ));
 	return addr;
 }
 
@@ -174,7 +174,7 @@ static void m1541_destroy_page(void * addr)
 	pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
 	pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
 			(((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
-			  virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN));
+			  virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN));
 	agp_generic_destroy_page(addr);
 }
 

drivers/char/agp/amd-k7-agp.c

@@ -43,7 +43,7 @@ static int amd_create_page_map(struct amd_page_map *page_map)
 
 	SetPageReserved(virt_to_page(page_map->real));
 	global_cache_flush();
-	page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
+	page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
 					    PAGE_SIZE);
 	if (page_map->remapped == NULL) {
 		ClearPageReserved(virt_to_page(page_map->real));
@@ -154,7 +154,7 @@ static int amd_create_gatt_table(struct agp_bridge_data *bridge)
 
 	agp_bridge->gatt_table_real = (u32 *)page_dir.real;
 	agp_bridge->gatt_table = (u32 __iomem *)page_dir.remapped;
-	agp_bridge->gatt_bus_addr = virt_to_phys(page_dir.real);
+	agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
 
 	/* Get the address for the gart region.
 	 * This is a bus address even on the alpha, b/c its
@@ -167,7 +167,7 @@ static int amd_create_gatt_table(struct agp_bridge_data *bridge)
 
 	/* Calculate the agp offset */
 	for (i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
-		writel(virt_to_phys(amd_irongate_private.gatt_pages[i]->real) | 1,
+		writel(virt_to_gart(amd_irongate_private.gatt_pages[i]->real) | 1,
 			page_dir.remapped+GET_PAGE_DIR_OFF(addr));
 		readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr));	/* PCI Posting. */
 	}

drivers/char/agp/amd64-agp.c

@@ -219,7 +219,7 @@ static struct aper_size_info_32 amd_8151_sizes[7] =
 
 static int amd_8151_configure(void)
 {
-	unsigned long gatt_bus = virt_to_phys(agp_bridge->gatt_table_real);
+	unsigned long gatt_bus = virt_to_gart(agp_bridge->gatt_table_real);
 
 	/* Configure AGP regs in each x86-64 host bridge. */
 	for_each_nb() {
@@ -591,7 +591,7 @@ static void __devexit agp_amd64_remove(struct pci_dev *pdev)
 {
 	struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
 
-	release_mem_region(virt_to_phys(bridge->gatt_table_real),
+	release_mem_region(virt_to_gart(bridge->gatt_table_real),
 			   amd64_aperture_sizes[bridge->aperture_size_idx].size);
 	agp_remove_bridge(bridge);
 	agp_put_bridge(bridge);

drivers/char/agp/ati-agp.c

@@ -61,7 +61,7 @@ static int ati_create_page_map(ati_page_map *page_map)
 
 	SetPageReserved(virt_to_page(page_map->real));
 	err = map_page_into_agp(virt_to_page(page_map->real));
-	page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real),
+	page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
 					    PAGE_SIZE);
 	if (page_map->remapped == NULL || err) {
 		ClearPageReserved(virt_to_page(page_map->real));
@@ -343,7 +343,7 @@ static int ati_create_gatt_table(struct agp_bridge_data *bridge)
 
 	agp_bridge->gatt_table_real = (u32 *)page_dir.real;
 	agp_bridge->gatt_table = (u32 __iomem *) page_dir.remapped;
-	agp_bridge->gatt_bus_addr = virt_to_bus(page_dir.real);
+	agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
 
 	/* Write out the size register */
 	current_size = A_SIZE_LVL2(agp_bridge->current_size);
@@ -373,7 +373,7 @@ static int ati_create_gatt_table(struct agp_bridge_data *bridge)
 
 	/* Calculate the agp offset */
 	for(i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
-		writel(virt_to_bus(ati_generic_private.gatt_pages[i]->real) | 1,
+		writel(virt_to_gart(ati_generic_private.gatt_pages[i]->real) | 1,
 			page_dir.remapped+GET_PAGE_DIR_OFF(addr));
 		readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr));	/* PCI Posting. */
 	}

drivers/char/agp/backend.c

@@ -148,7 +148,7 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
 			return -ENOMEM;
 		}
 
-		bridge->scratch_page_real = virt_to_phys(addr);
+		bridge->scratch_page_real = virt_to_gart(addr);
 		bridge->scratch_page =
 		    bridge->driver->mask_memory(bridge, bridge->scratch_page_real, 0);
 	}
@@ -189,7 +189,7 @@ static int agp_backend_initialize(struct agp_bridge_data *bridge)
 err_out:
 	if (bridge->driver->needs_scratch_page)
 		bridge->driver->agp_destroy_page(
-				phys_to_virt(bridge->scratch_page_real));
+				gart_to_virt(bridge->scratch_page_real));
 	if (got_gatt)
 		bridge->driver->free_gatt_table(bridge);
 	if (got_keylist) {
@@ -214,7 +214,7 @@ static void agp_backend_cleanup(struct agp_bridge_data *bridge)
 	if (bridge->driver->agp_destroy_page &&
 	    bridge->driver->needs_scratch_page)
 		bridge->driver->agp_destroy_page(
-				phys_to_virt(bridge->scratch_page_real));
+				gart_to_virt(bridge->scratch_page_real));
 }
 
 /* When we remove the global variable agp_bridge from all drivers

drivers/char/agp/efficeon-agp.c

@@ -219,7 +219,7 @@ static int efficeon_create_gatt_table(struct agp_bridge_data *bridge)
 
 		efficeon_private.l1_table[index] = page;
 
-		value = __pa(page) | pati | present | index;
+		value = virt_to_gart(page) | pati | present | index;
 
 		pci_write_config_dword(agp_bridge->dev,
 			EFFICEON_ATTPAGE, value);

drivers/char/agp/generic.c

@@ -153,7 +153,7 @@ void agp_free_memory(struct agp_memory *curr)
 	}
 	if (curr->page_count != 0) {
 		for (i = 0; i < curr->page_count; i++) {
-			curr->bridge->driver->agp_destroy_page(phys_to_virt(curr->memory[i]));
+			curr->bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[i]));
 		}
 	}
 	agp_free_key(curr->key);
@@ -209,7 +209,7 @@ struct agp_memory *agp_allocate_memory(struct agp_bridge_data *bridge,
 			agp_free_memory(new);
 			return NULL;
 		}
-		new->memory[i] = virt_to_phys(addr);
+		new->memory[i] = virt_to_gart(addr);
 		new->page_count++;
 	}
        new->bridge = bridge;
@@ -295,19 +295,6 @@ int agp_num_entries(void)
 EXPORT_SYMBOL_GPL(agp_num_entries);
 
 
-static int check_bridge_mode(struct pci_dev *dev)
-{
-	u32 agp3;
-	u8 cap_ptr;
-
-	cap_ptr = pci_find_capability(dev, PCI_CAP_ID_AGP);
-	pci_read_config_dword(dev, cap_ptr+AGPSTAT, &agp3);
-	if (agp3 & AGPSTAT_MODE_3_0)
-		return 1;
-	return 0;
-}
-
-
 /**
  *	agp_copy_info  -  copy bridge state information
  *
@@ -328,7 +315,7 @@ int agp_copy_info(struct agp_bridge_data *bridge, struct agp_kern_info *info)
 	info->version.minor = bridge->version->minor;
 	info->chipset = SUPPORTED;
 	info->device = bridge->dev;
-	if (check_bridge_mode(bridge->dev))
+	if (bridge->mode & AGPSTAT_MODE_3_0)
 		info->mode = bridge->mode & ~AGP3_RESERVED_MASK;
 	else
 		info->mode = bridge->mode & ~AGP2_RESERVED_MASK;
@@ -661,7 +648,7 @@ u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 requested_mode
 		bridge_agpstat &= ~AGPSTAT_FW;
 
 	/* Check to see if we are operating in 3.0 mode */
-	if (check_bridge_mode(agp_bridge->dev))
+	if (agp_bridge->mode & AGPSTAT_MODE_3_0)
 		agp_v3_parse_one(&requested_mode, &bridge_agpstat, &vga_agpstat);
 	else
 		agp_v2_parse_one(&requested_mode, &bridge_agpstat, &vga_agpstat);
@@ -732,7 +719,7 @@ void agp_generic_enable(struct agp_bridge_data *bridge, u32 requested_mode)
 
 	/* Do AGP version specific frobbing. */
 	if (bridge->major_version >= 3) {
-		if (check_bridge_mode(bridge->dev)) {
+		if (bridge->mode & AGPSTAT_MODE_3_0) {
 			/* If we have 3.5, we can do the isoch stuff. */
 			if (bridge->minor_version >= 5)
 				agp_3_5_enable(bridge);
@@ -806,8 +793,7 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge)
 				break;
 			}
 
-			table = (char *) __get_free_pages(GFP_KERNEL,
-							  page_order);
+			table = alloc_gatt_pages(page_order);
 
 			if (table == NULL) {
 				i++;
@@ -838,7 +824,7 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge)
 		size = ((struct aper_size_info_fixed *) temp)->size;
 		page_order = ((struct aper_size_info_fixed *) temp)->page_order;
 		num_entries = ((struct aper_size_info_fixed *) temp)->num_entries;
-		table = (char *) __get_free_pages(GFP_KERNEL, page_order);
+		table = alloc_gatt_pages(page_order);
 	}
 
 	if (table == NULL)
@@ -853,7 +839,7 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge)
 	agp_gatt_table = (void *)table;
 
 	bridge->driver->cache_flush();
-	bridge->gatt_table = ioremap_nocache(virt_to_phys(table),
+	bridge->gatt_table = ioremap_nocache(virt_to_gart(table),
 					(PAGE_SIZE * (1 << page_order)));
 	bridge->driver->cache_flush();
 
@@ -861,11 +847,11 @@ int agp_generic_create_gatt_table(struct agp_bridge_data *bridge)
 		for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
 			ClearPageReserved(page);
 
-		free_pages((unsigned long) table, page_order);
+		free_gatt_pages(table, page_order);
 
 		return -ENOMEM;
 	}
-	bridge->gatt_bus_addr = virt_to_phys(bridge->gatt_table_real);
+	bridge->gatt_bus_addr = virt_to_gart(bridge->gatt_table_real);
 
 	/* AK: bogus, should encode addresses > 4GB */
 	for (i = 0; i < num_entries; i++) {
@@ -919,7 +905,7 @@ int agp_generic_free_gatt_table(struct agp_bridge_data *bridge)
 	for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
 		ClearPageReserved(page);
 
-	free_pages((unsigned long) bridge->gatt_table_real, page_order);
+	free_gatt_pages(bridge->gatt_table_real, page_order);
 
 	agp_gatt_table = NULL;
 	bridge->gatt_table = NULL;

drivers/char/agp/hp-agp.c

@@ -110,7 +110,7 @@ static int __init hp_zx1_ioc_shared(void)
 	hp->gart_size = HP_ZX1_GART_SIZE;
 	hp->gatt_entries = hp->gart_size / hp->io_page_size;
 
-	hp->io_pdir = phys_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
+	hp->io_pdir = gart_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
 	hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];
 
 	if (hp->gatt[0] != HP_ZX1_SBA_IOMMU_COOKIE) {
@@ -248,7 +248,7 @@ hp_zx1_configure (void)
 	agp_bridge->mode = readl(hp->lba_regs+hp->lba_cap_offset+PCI_AGP_STATUS);
 
 	if (hp->io_pdir_owner) {
-		writel(virt_to_phys(hp->io_pdir), hp->ioc_regs+HP_ZX1_PDIR_BASE);
+		writel(virt_to_gart(hp->io_pdir), hp->ioc_regs+HP_ZX1_PDIR_BASE);
 		readl(hp->ioc_regs+HP_ZX1_PDIR_BASE);
 		writel(hp->io_tlb_ps, hp->ioc_regs+HP_ZX1_TCNFG);
 		readl(hp->ioc_regs+HP_ZX1_TCNFG);

drivers/char/agp/i460-agp.c

@@ -372,7 +372,7 @@ static int i460_alloc_large_page (struct lp_desc *lp)
 	}
 	memset(lp->alloced_map, 0, map_size);
 
-	lp->paddr = virt_to_phys(lpage);
+	lp->paddr = virt_to_gart(lpage);
 	lp->refcount = 0;
 	atomic_add(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
 	return 0;
@@ -383,7 +383,7 @@ static void i460_free_large_page (struct lp_desc *lp)
 	kfree(lp->alloced_map);
 	lp->alloced_map = NULL;
 
-	free_pages((unsigned long) phys_to_virt(lp->paddr), I460_IO_PAGE_SHIFT - PAGE_SHIFT);
+	free_pages((unsigned long) gart_to_virt(lp->paddr), I460_IO_PAGE_SHIFT - PAGE_SHIFT);
 	atomic_sub(I460_KPAGES_PER_IOPAGE, &agp_bridge->current_memory_agp);
 }
 

drivers/char/agp/intel-agp.c

@@ -286,7 +286,7 @@ static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type)
 	if (new == NULL)
 		return NULL;
 
-	new->memory[0] = virt_to_phys(addr);
+	new->memory[0] = virt_to_gart(addr);
 	if (pg_count == 4) {
 		/* kludge to get 4 physical pages for ARGB cursor */
 		new->memory[1] = new->memory[0] + PAGE_SIZE;
@@ -329,10 +329,10 @@ static void intel_i810_free_by_type(struct agp_memory *curr)
 	agp_free_key(curr->key);
 	if(curr->type == AGP_PHYS_MEMORY) {
 		if (curr->page_count == 4)
-			i8xx_destroy_pages(phys_to_virt(curr->memory[0]));
+			i8xx_destroy_pages(gart_to_virt(curr->memory[0]));
 		else
 			agp_bridge->driver->agp_destroy_page(
-				 phys_to_virt(curr->memory[0]));
+				 gart_to_virt(curr->memory[0]));
 		vfree(curr->memory);
 	}
 	kfree(curr);
@@ -418,7 +418,8 @@ static void intel_i830_init_gtt_entries(void)
 		case I915_GMCH_GMS_STOLEN_48M:
 			/* Check it's really I915G */
 			if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB)
 				gtt_entries = MB(48) - KB(size);
 			else
 				gtt_entries = 0;
@@ -426,7 +427,8 @@ static void intel_i830_init_gtt_entries(void)
 		case I915_GMCH_GMS_STOLEN_64M:
 			/* Check it's really I915G */
 			if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
-			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
+			    agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB)
 				gtt_entries = MB(64) - KB(size);
 			else
 				gtt_entries = 0;
@@ -1662,6 +1664,14 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
 		}
 		name = "915GM";
 		break;
+	case PCI_DEVICE_ID_INTEL_82945G_HB:
+		if (find_i830(PCI_DEVICE_ID_INTEL_82945G_IG)) {
+			bridge->driver = &intel_915_driver;
+		} else {
+			bridge->driver = &intel_845_driver;
+		}
+		name = "945G";
+		break;
 	case PCI_DEVICE_ID_INTEL_7505_0:
 		bridge->driver = &intel_7505_driver;
 		name = "E7505";
@@ -1801,6 +1811,7 @@ static struct pci_device_id agp_intel_pci_table[] = {
 	ID(PCI_DEVICE_ID_INTEL_7205_0),
 	ID(PCI_DEVICE_ID_INTEL_82915G_HB),
 	ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
+	ID(PCI_DEVICE_ID_INTEL_82945G_HB),
 	{ }
 };
 

drivers/char/agp/sgi-agp.c

@@ -133,11 +133,14 @@ static int sgi_tioca_insert_memory(struct agp_memory *mem, off_t pg_start,
 	off_t j;
 	void *temp;
 	struct agp_bridge_data *bridge;
+	u64 *table;
 
 	bridge = mem->bridge;
 	if (!bridge)
 		return -EINVAL;
 
+	table = (u64 *)bridge->gatt_table;
+
 	temp = bridge->current_size;
 
 	switch (bridge->driver->size_type) {
@@ -175,7 +178,7 @@ static int sgi_tioca_insert_memory(struct agp_memory *mem, off_t pg_start,
 	j = pg_start;
 
 	while (j < (pg_start + mem->page_count)) {
-		if (*(bridge->gatt_table + j))
+		if (table[j])
 			return -EBUSY;
 		j++;
 	}
@@ -186,7 +189,7 @@ static int sgi_tioca_insert_memory(struct agp_memory *mem, off_t pg_start,
 	}
 
 	for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
-		*(bridge->gatt_table + j) =
+		table[j] =
 		    bridge->driver->mask_memory(bridge, mem->memory[i],
 						mem->type);
 	}
@@ -200,6 +203,7 @@ static int sgi_tioca_remove_memory(struct agp_memory *mem, off_t pg_start,
 {
 	size_t i;
 	struct agp_bridge_data *bridge;
+	u64 *table;
 
 	bridge = mem->bridge;
 	if (!bridge)
@@ -209,8 +213,10 @@ static int sgi_tioca_remove_memory(struct agp_memory *mem, off_t pg_start,
 		return -EINVAL;
 	}
 
+	table = (u64 *)bridge->gatt_table;
+
 	for (i = pg_start; i < (mem->page_count + pg_start); i++) {
-		*(bridge->gatt_table + i) = 0;
+		table[i] = 0;
 	}
 
 	bridge->driver->tlb_flush(mem);

drivers/char/agp/sworks-agp.c

@@ -51,7 +51,7 @@ static int serverworks_create_page_map(struct serverworks_page_map *page_map)
 	}
 	SetPageReserved(virt_to_page(page_map->real));
 	global_cache_flush();
-	page_map->remapped = ioremap_nocache(virt_to_phys(page_map->real), 
+	page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
 					    PAGE_SIZE);
 	if (page_map->remapped == NULL) {
 		ClearPageReserved(virt_to_page(page_map->real));
@@ -162,7 +162,7 @@ static int serverworks_create_gatt_table(struct agp_bridge_data *bridge)
 	/* Create a fake scratch directory */
 	for(i = 0; i < 1024; i++) {
 		writel(agp_bridge->scratch_page, serverworks_private.scratch_dir.remapped+i);
-		writel(virt_to_phys(serverworks_private.scratch_dir.real) | 1, page_dir.remapped+i);
+		writel(virt_to_gart(serverworks_private.scratch_dir.real) | 1, page_dir.remapped+i);
 	}
 
 	retval = serverworks_create_gatt_pages(value->num_entries / 1024);
@@ -174,7 +174,7 @@ static int serverworks_create_gatt_table(struct agp_bridge_data *bridge)
 
 	agp_bridge->gatt_table_real = (u32 *)page_dir.real;
 	agp_bridge->gatt_table = (u32 __iomem *)page_dir.remapped;
-	agp_bridge->gatt_bus_addr = virt_to_phys(page_dir.real);
+	agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
 
 	/* Get the address for the gart region.
 	 * This is a bus address even on the alpha, b/c its
@@ -187,7 +187,7 @@ static int serverworks_create_gatt_table(struct agp_bridge_data *bridge)
 	/* Calculate the agp offset */	
 
 	for(i = 0; i < value->num_entries / 1024; i++)
-		writel(virt_to_phys(serverworks_private.gatt_pages[i]->real)|1, page_dir.remapped+i);
+		writel(virt_to_gart(serverworks_private.gatt_pages[i]->real)|1, page_dir.remapped+i);
 
 	return 0;
 }

drivers/char/agp/uninorth-agp.c

@@ -407,7 +407,7 @@ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge)
 
 	bridge->gatt_table_real = (u32 *) table;
 	bridge->gatt_table = (u32 *)table;
-	bridge->gatt_bus_addr = virt_to_phys(table);
+	bridge->gatt_bus_addr = virt_to_gart(table);
 
 	for (i = 0; i < num_entries; i++)
 		bridge->gatt_table[i] = 0;

drivers/char/mxser.c

@@ -1995,9 +1995,6 @@ static void mxser_receive_chars(struct mxser_struct *info, int *status)
 	unsigned char ch, gdl;
 	int ignored = 0;
 	int cnt = 0;
-	unsigned char *cp;
-	char *fp;
-	int count;
 	int recv_room;
 	int max = 256;
 	unsigned long flags;
@@ -2011,10 +2008,6 @@ static void mxser_receive_chars(struct mxser_struct *info, int *status)
 		//return;
 	}
 
-	cp = tty->flip.char_buf;
-	fp = tty->flip.flag_buf;
-	count = 0;
-
 	// following add by Victor Yu. 09-02-2002
 	if (info->IsMoxaMustChipFlag != MOXA_OTHER_UART) {
 
@@ -2041,12 +2034,10 @@ static void mxser_receive_chars(struct mxser_struct *info, int *status)
 		}
 		while (gdl--) {
 			ch = inb(info->base + UART_RX);
-			count++;
-			*cp++ = ch;
-			*fp++ = 0;
+			tty_insert_flip_char(tty, ch, 0);
 			cnt++;
 			/*
-			   if((count>=HI_WATER) && (info->stop_rx==0)){
+			   if((cnt>=HI_WATER) && (info->stop_rx==0)){
 			   mxser_stoprx(tty);
 			   info->stop_rx=1;
 			   break;
@@ -2061,7 +2052,7 @@ intr_old:
 		if (max-- < 0)
 			break;
 		/*
-		   if((count>=HI_WATER) && (info->stop_rx==0)){
+		   if((cnt>=HI_WATER) && (info->stop_rx==0)){
 		   mxser_stoprx(tty);
 		   info->stop_rx=1;
 		   break;
@@ -2078,36 +2069,33 @@ intr_old:
 			if (++ignored > 100)
 				break;
 		} else {
-			count++;
+			char flag = 0;
 			if (*status & UART_LSR_SPECIAL) {
 				if (*status & UART_LSR_BI) {
-					*fp++ = TTY_BREAK;
+					flag = TTY_BREAK;
 /* added by casper 1/11/2000 */
 					info->icount.brk++;
-
 /* */
 					if (info->flags & ASYNC_SAK)
 						do_SAK(tty);
 				} else if (*status & UART_LSR_PE) {
-					*fp++ = TTY_PARITY;
+					flag = TTY_PARITY;
 /* added by casper 1/11/2000 */
 					info->icount.parity++;
 /* */
 				} else if (*status & UART_LSR_FE) {
-					*fp++ = TTY_FRAME;
+					flag = TTY_FRAME;
 /* added by casper 1/11/2000 */
 					info->icount.frame++;
 /* */
 				} else if (*status & UART_LSR_OE) {
-					*fp++ = TTY_OVERRUN;
+					flag = TTY_OVERRUN;
 /* added by casper 1/11/2000 */
 					info->icount.overrun++;
 /* */
-				} else
-					*fp++ = 0;
-			} else
-				*fp++ = 0;
-			*cp++ = ch;
+				}
+			}
+			tty_insert_flip_char(tty, ch, flag);
 			cnt++;
 			if (cnt >= recv_room) {
 				if (!info->ldisc_stop_rx) {
@@ -2132,13 +2120,13 @@ intr_old:
 		// above add by Victor Yu. 09-02-2002
 	} while (*status & UART_LSR_DR);
 
-      end_intr:		// add by Victor Yu. 09-02-2002
+end_intr:		// add by Victor Yu. 09-02-2002
 
 	mxvar_log.rxcnt[info->port] += cnt;
 	info->mon_data.rxcnt += cnt;
 	info->mon_data.up_rxcnt += cnt;
 	spin_unlock_irqrestore(&info->slock, flags);
-	
+
 	tty_flip_buffer_push(tty);
 }
 

drivers/cpufreq/Kconfig

@@ -46,6 +46,10 @@ config CPU_FREQ_STAT_DETAILS
          This will show detail CPU frequency translation table in sysfs file
          system
 
+# Note that it is not currently possible to set the other governors (such as ondemand)
+# as the default, since if they fail to initialise, cpufreq will be
+# left in an undefined state.
+
 choice
 	prompt "Default CPUFreq governor"
 	default CPU_FREQ_DEFAULT_GOV_USERSPACE if CPU_FREQ_SA1100 || CPU_FREQ_SA1110
@@ -115,4 +119,24 @@ config CPU_FREQ_GOV_ONDEMAND
 
 	  If in doubt, say N.
 
+config CPU_FREQ_GOV_CONSERVATIVE
+	tristate "'conservative' cpufreq governor"
+	depends on CPU_FREQ
+	help
+	  'conservative' - this driver is rather similar to the 'ondemand'
+	  governor both in its source code and its purpose, the difference is
+	  its optimisation for better suitability in a battery powered
+	  environment.  The frequency is gracefully increased and decreased
+	  rather than jumping to 100% when speed is required.
+
+	  If you have a desktop machine then you should really be considering
+	  the 'ondemand' governor instead, however if you are using a laptop,
+	  PDA or even an AMD64 based computer (due to the unacceptable
+	  step-by-step latency issues between the minimum and maximum frequency
+	  transitions in the CPU) you will probably want to use this governor.
+
+	  For details, take a look at linux/Documentation/cpu-freq.
+
+	  If in doubt, say N.
+
 endif	# CPU_FREQ

drivers/cpufreq/Makefile

@@ -8,6 +8,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_PERFORMANCE)	+= cpufreq_performance.o
 obj-$(CONFIG_CPU_FREQ_GOV_POWERSAVE)	+= cpufreq_powersave.o
 obj-$(CONFIG_CPU_FREQ_GOV_USERSPACE)	+= cpufreq_userspace.o
 obj-$(CONFIG_CPU_FREQ_GOV_ONDEMAND)	+= cpufreq_ondemand.o
+obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE)	+= cpufreq_conservative.o
 
 # CPUfreq cross-arch helpers
 obj-$(CONFIG_CPU_FREQ_TABLE)		+= freq_table.o

drivers/cpufreq/cpufreq.c

@@ -258,7 +258,7 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state)
 			    (likely(cpufreq_cpu_data[freqs->cpu]->cur)) &&
 			    (unlikely(freqs->old != cpufreq_cpu_data[freqs->cpu]->cur)))
 			{
-				printk(KERN_WARNING "Warning: CPU frequency is %u, "
+				dprintk(KERN_WARNING "Warning: CPU frequency is %u, "
 				       "cpufreq assumed %u kHz.\n", freqs->old, cpufreq_cpu_data[freqs->cpu]->cur);
 				freqs->old = cpufreq_cpu_data[freqs->cpu]->cur;
 			}
@@ -814,7 +814,7 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, unsigne
 {
 	struct cpufreq_freqs freqs;
 
-	printk(KERN_WARNING "Warning: CPU frequency out of sync: cpufreq and timing "
+	dprintk(KERN_WARNING "Warning: CPU frequency out of sync: cpufreq and timing "
 	       "core thinks of %u, is %u kHz.\n", old_freq, new_freq);
 
 	freqs.cpu = cpu;
@@ -923,7 +923,7 @@ static int cpufreq_suspend(struct sys_device * sysdev, u32 state)
 		struct cpufreq_freqs freqs;
 
 		if (!(cpufreq_driver->flags & CPUFREQ_PM_NO_WARN))
-			printk(KERN_DEBUG "Warning: CPU frequency is %u, "
+			dprintk(KERN_DEBUG "Warning: CPU frequency is %u, "
 			       "cpufreq assumed %u kHz.\n",
 			       cur_freq, cpu_policy->cur);
 
@@ -1004,7 +1004,7 @@ static int cpufreq_resume(struct sys_device * sysdev)
 			struct cpufreq_freqs freqs;
 
 			if (!(cpufreq_driver->flags & CPUFREQ_PM_NO_WARN))
-				printk(KERN_WARNING "Warning: CPU frequency"
+				dprintk(KERN_WARNING "Warning: CPU frequency"
 				       "is %u, cpufreq assumed %u kHz.\n",
 				       cur_freq, cpu_policy->cur);
 

drivers/cpufreq/cpufreq_conservative.c

@@ -0,0 +1,586 @@
+/*
+ *  drivers/cpufreq/cpufreq_conservative.c
+ *
+ *  Copyright (C)  2001 Russell King
+ *            (C)  2003 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>.
+ *                      Jun Nakajima <jun.nakajima@intel.com>
+ *            (C)  2004 Alexander Clouter <alex-kernel@digriz.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/smp.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ctype.h>
+#include <linux/cpufreq.h>
+#include <linux/sysctl.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/sysfs.h>
+#include <linux/sched.h>
+#include <linux/kmod.h>
+#include <linux/workqueue.h>
+#include <linux/jiffies.h>
+#include <linux/kernel_stat.h>
+#include <linux/percpu.h>
+
+/*
+ * dbs is used in this file as a shortform for demandbased switching
+ * It helps to keep variable names smaller, simpler
+ */
+
+#define DEF_FREQUENCY_UP_THRESHOLD		(80)
+#define MIN_FREQUENCY_UP_THRESHOLD		(0)
+#define MAX_FREQUENCY_UP_THRESHOLD		(100)
+
+#define DEF_FREQUENCY_DOWN_THRESHOLD		(20)
+#define MIN_FREQUENCY_DOWN_THRESHOLD		(0)
+#define MAX_FREQUENCY_DOWN_THRESHOLD		(100)
+
+/* 
+ * The polling frequency of this governor depends on the capability of 
+ * the processor. Default polling frequency is 1000 times the transition
+ * latency of the processor. The governor will work on any processor with 
+ * transition latency <= 10mS, using appropriate sampling 
+ * rate.
+ * For CPUs with transition latency > 10mS (mostly drivers with CPUFREQ_ETERNAL)
+ * this governor will not work.
+ * All times here are in uS.
+ */
+static unsigned int 				def_sampling_rate;
+#define MIN_SAMPLING_RATE			(def_sampling_rate / 2)
+#define MAX_SAMPLING_RATE			(500 * def_sampling_rate)
+#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER	(100000)
+#define DEF_SAMPLING_DOWN_FACTOR		(5)
+#define TRANSITION_LATENCY_LIMIT		(10 * 1000)
+
+static void do_dbs_timer(void *data);
+
+struct cpu_dbs_info_s {
+	struct cpufreq_policy 	*cur_policy;
+	unsigned int 		prev_cpu_idle_up;
+	unsigned int 		prev_cpu_idle_down;
+	unsigned int 		enable;
+};
+static DEFINE_PER_CPU(struct cpu_dbs_info_s, cpu_dbs_info);
+
+static unsigned int dbs_enable;	/* number of CPUs using this policy */
+
+static DECLARE_MUTEX 	(dbs_sem);
+static DECLARE_WORK	(dbs_work, do_dbs_timer, NULL);
+
+struct dbs_tuners {
+	unsigned int 		sampling_rate;
+	unsigned int		sampling_down_factor;
+	unsigned int		up_threshold;
+	unsigned int		down_threshold;
+	unsigned int		ignore_nice;
+	unsigned int		freq_step;
+};
+
+static struct dbs_tuners dbs_tuners_ins = {
+	.up_threshold 		= DEF_FREQUENCY_UP_THRESHOLD,
+	.down_threshold 	= DEF_FREQUENCY_DOWN_THRESHOLD,
+	.sampling_down_factor 	= DEF_SAMPLING_DOWN_FACTOR,
+};
+
+static inline unsigned int get_cpu_idle_time(unsigned int cpu)
+{
+	return	kstat_cpu(cpu).cpustat.idle +
+		kstat_cpu(cpu).cpustat.iowait +
+		( !dbs_tuners_ins.ignore_nice ? 
+		  kstat_cpu(cpu).cpustat.nice :
+		  0);
+}
+
+/************************** sysfs interface ************************/
+static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
+{
+	return sprintf (buf, "%u\n", MAX_SAMPLING_RATE);
+}
+
+static ssize_t show_sampling_rate_min(struct cpufreq_policy *policy, char *buf)
+{
+	return sprintf (buf, "%u\n", MIN_SAMPLING_RATE);
+}
+
+#define define_one_ro(_name) 					\
+static struct freq_attr _name =  				\
+__ATTR(_name, 0444, show_##_name, NULL)
+
+define_one_ro(sampling_rate_max);
+define_one_ro(sampling_rate_min);
+
+/* cpufreq_conservative Governor Tunables */
+#define show_one(file_name, object)					\
+static ssize_t show_##file_name						\
+(struct cpufreq_policy *unused, char *buf)				\
+{									\
+	return sprintf(buf, "%u\n", dbs_tuners_ins.object);		\
+}
+show_one(sampling_rate, sampling_rate);
+show_one(sampling_down_factor, sampling_down_factor);
+show_one(up_threshold, up_threshold);
+show_one(down_threshold, down_threshold);
+show_one(ignore_nice, ignore_nice);
+show_one(freq_step, freq_step);
+
+static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused, 
+		const char *buf, size_t count)
+{
+	unsigned int input;
+	int ret;
+	ret = sscanf (buf, "%u", &input);
+	if (ret != 1 )
+		return -EINVAL;
+
+	down(&dbs_sem);
+	dbs_tuners_ins.sampling_down_factor = input;
+	up(&dbs_sem);
+
+	return count;
+}
+
+static ssize_t store_sampling_rate(struct cpufreq_policy *unused, 
+		const char *buf, size_t count)
+{
+	unsigned int input;
+	int ret;
+	ret = sscanf (buf, "%u", &input);
+
+	down(&dbs_sem);
+	if (ret != 1 || input > MAX_SAMPLING_RATE || input < MIN_SAMPLING_RATE) {
+		up(&dbs_sem);
+		return -EINVAL;
+	}
+
+	dbs_tuners_ins.sampling_rate = input;
+	up(&dbs_sem);
+
+	return count;
+}
+
+static ssize_t store_up_threshold(struct cpufreq_policy *unused, 
+		const char *buf, size_t count)
+{
+	unsigned int input;
+	int ret;
+	ret = sscanf (buf, "%u", &input);
+
+	down(&dbs_sem);
+	if (ret != 1 || input > MAX_FREQUENCY_UP_THRESHOLD || 
+			input < MIN_FREQUENCY_UP_THRESHOLD ||
+			input <= dbs_tuners_ins.down_threshold) {
+		up(&dbs_sem);
+		return -EINVAL;
+	}
+
+	dbs_tuners_ins.up_threshold = input;
+	up(&dbs_sem);
+
+	return count;
+}
+
+static ssize_t store_down_threshold(struct cpufreq_policy *unused, 
+		const char *buf, size_t count)
+{
+	unsigned int input;
+	int ret;
+	ret = sscanf (buf, "%u", &input);
+
+	down(&dbs_sem);
+	if (ret != 1 || input > MAX_FREQUENCY_DOWN_THRESHOLD || 
+			input < MIN_FREQUENCY_DOWN_THRESHOLD ||
+			input >= dbs_tuners_ins.up_threshold) {
+		up(&dbs_sem);
+		return -EINVAL;
+	}
+
+	dbs_tuners_ins.down_threshold = input;
+	up(&dbs_sem);
+
+	return count;
+}
+
+static ssize_t store_ignore_nice(struct cpufreq_policy *policy,
+		const char *buf, size_t count)
+{
+	unsigned int input;
+	int ret;
+
+	unsigned int j;
+	
+	ret = sscanf (buf, "%u", &input);
+	if ( ret != 1 )
+		return -EINVAL;
+
+	if ( input > 1 )
+		input = 1;
+	
+	down(&dbs_sem);
+	if ( input == dbs_tuners_ins.ignore_nice ) { /* nothing to do */
+		up(&dbs_sem);
+		return count;
+	}
+	dbs_tuners_ins.ignore_nice = input;
+
+	/* we need to re-evaluate prev_cpu_idle_up and prev_cpu_idle_down */
+	for_each_online_cpu(j) {
+		struct cpu_dbs_info_s *j_dbs_info;
+		j_dbs_info = &per_cpu(cpu_dbs_info, j);
+		j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
+		j_dbs_info->prev_cpu_idle_down = j_dbs_info->prev_cpu_idle_up;
+	}
+	up(&dbs_sem);
+
+	return count;
+}
+
+static ssize_t store_freq_step(struct cpufreq_policy *policy,
+		const char *buf, size_t count)
+{
+	unsigned int input;
+	int ret;
+
+	ret = sscanf (buf, "%u", &input);
+
+	if ( ret != 1 )
+		return -EINVAL;
+
+	if ( input > 100 )
+		input = 100;
+	
+	/* no need to test here if freq_step is zero as the user might actually
+	 * want this, they would be crazy though :) */
+	down(&dbs_sem);
+	dbs_tuners_ins.freq_step = input;
+	up(&dbs_sem);
+
+	return count;
+}
+
+#define define_one_rw(_name) \
+static struct freq_attr _name = \
+__ATTR(_name, 0644, show_##_name, store_##_name)
+
+define_one_rw(sampling_rate);
+define_one_rw(sampling_down_factor);
+define_one_rw(up_threshold);
+define_one_rw(down_threshold);
+define_one_rw(ignore_nice);
+define_one_rw(freq_step);
+
+static struct attribute * dbs_attributes[] = {
+	&sampling_rate_max.attr,
+	&sampling_rate_min.attr,
+	&sampling_rate.attr,
+	&sampling_down_factor.attr,
+	&up_threshold.attr,
+	&down_threshold.attr,
+	&ignore_nice.attr,
+	&freq_step.attr,
+	NULL
+};
+
+static struct attribute_group dbs_attr_group = {
+	.attrs = dbs_attributes,
+	.name = "conservative",
+};
+
+/************************** sysfs end ************************/
+
+static void dbs_check_cpu(int cpu)
+{
+	unsigned int idle_ticks, up_idle_ticks, down_idle_ticks;
+	unsigned int freq_step;
+	unsigned int freq_down_sampling_rate;
+	static int down_skip[NR_CPUS];
+	static int requested_freq[NR_CPUS];
+	static unsigned short init_flag = 0;
+	struct cpu_dbs_info_s *this_dbs_info;
+	struct cpu_dbs_info_s *dbs_info;
+
+	struct cpufreq_policy *policy;
+	unsigned int j;
+
+	this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
+	if (!this_dbs_info->enable)
+		return;
+
+	policy = this_dbs_info->cur_policy;
+
+	if ( init_flag == 0 ) {
+		for ( /* NULL */; init_flag < NR_CPUS; init_flag++ ) {
+			dbs_info = &per_cpu(cpu_dbs_info, init_flag);
+			requested_freq[cpu] = dbs_info->cur_policy->cur;
+		}
+		init_flag = 1;
+	}
+	
+	/* 
+	 * The default safe range is 20% to 80% 
+	 * Every sampling_rate, we check
+	 * 	- If current idle time is less than 20%, then we try to 
+	 * 	  increase frequency
+	 * Every sampling_rate*sampling_down_factor, we check
+	 * 	- If current idle time is more than 80%, then we try to
+	 * 	  decrease frequency
+	 *
+	 * Any frequency increase takes it to the maximum frequency. 
+	 * Frequency reduction happens at minimum steps of 
+	 * 5% (default) of max_frequency 
+	 */
+
+	/* Check for frequency increase */
+
+	idle_ticks = UINT_MAX;
+	for_each_cpu_mask(j, policy->cpus) {
+		unsigned int tmp_idle_ticks, total_idle_ticks;
+		struct cpu_dbs_info_s *j_dbs_info;
+
+		j_dbs_info = &per_cpu(cpu_dbs_info, j);
+		/* Check for frequency increase */
+		total_idle_ticks = get_cpu_idle_time(j);
+		tmp_idle_ticks = total_idle_ticks -
+			j_dbs_info->prev_cpu_idle_up;
+		j_dbs_info->prev_cpu_idle_up = total_idle_ticks;
+
+		if (tmp_idle_ticks < idle_ticks)
+			idle_ticks = tmp_idle_ticks;
+	}
+
+	/* Scale idle ticks by 100 and compare with up and down ticks */
+	idle_ticks *= 100;
+	up_idle_ticks = (100 - dbs_tuners_ins.up_threshold) *
+		usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
+
+	if (idle_ticks < up_idle_ticks) {
+		down_skip[cpu] = 0;
+		for_each_cpu_mask(j, policy->cpus) {
+			struct cpu_dbs_info_s *j_dbs_info;
+
+			j_dbs_info = &per_cpu(cpu_dbs_info, j);
+			j_dbs_info->prev_cpu_idle_down = 
+					j_dbs_info->prev_cpu_idle_up;
+		}
+		/* if we are already at full speed then break out early */
+		if (requested_freq[cpu] == policy->max)
+			return;
+		
+		freq_step = (dbs_tuners_ins.freq_step * policy->max) / 100;
+
+		/* max freq cannot be less than 100. But who knows.... */
+		if (unlikely(freq_step == 0))
+			freq_step = 5;
+		
+		requested_freq[cpu] += freq_step;
+		if (requested_freq[cpu] > policy->max)
+			requested_freq[cpu] = policy->max;
+
+		__cpufreq_driver_target(policy, requested_freq[cpu], 
+			CPUFREQ_RELATION_H);
+		return;
+	}
+
+	/* Check for frequency decrease */
+	down_skip[cpu]++;
+	if (down_skip[cpu] < dbs_tuners_ins.sampling_down_factor)
+		return;
+
+	idle_ticks = UINT_MAX;
+	for_each_cpu_mask(j, policy->cpus) {
+		unsigned int tmp_idle_ticks, total_idle_ticks;
+		struct cpu_dbs_info_s *j_dbs_info;
+
+		j_dbs_info = &per_cpu(cpu_dbs_info, j);
+		total_idle_ticks = j_dbs_info->prev_cpu_idle_up;
+		tmp_idle_ticks = total_idle_ticks -
+			j_dbs_info->prev_cpu_idle_down;
+		j_dbs_info->prev_cpu_idle_down = total_idle_ticks;
+
+		if (tmp_idle_ticks < idle_ticks)
+			idle_ticks = tmp_idle_ticks;
+	}
+
+	/* Scale idle ticks by 100 and compare with up and down ticks */
+	idle_ticks *= 100;
+	down_skip[cpu] = 0;
+
+	freq_down_sampling_rate = dbs_tuners_ins.sampling_rate *
+		dbs_tuners_ins.sampling_down_factor;
+	down_idle_ticks = (100 - dbs_tuners_ins.down_threshold) *
+			usecs_to_jiffies(freq_down_sampling_rate);
+
+	if (idle_ticks > down_idle_ticks) {
+		/* if we are already at the lowest speed then break out early
+		 * or if we 'cannot' reduce the speed as the user might want
+		 * freq_step to be zero */
+		if (requested_freq[cpu] == policy->min
+				|| dbs_tuners_ins.freq_step == 0)
+			return;
+
+		freq_step = (dbs_tuners_ins.freq_step * policy->max) / 100;
+
+		/* max freq cannot be less than 100. But who knows.... */
+		if (unlikely(freq_step == 0))
+			freq_step = 5;
+
+		requested_freq[cpu] -= freq_step;
+		if (requested_freq[cpu] < policy->min)
+			requested_freq[cpu] = policy->min;
+
+		__cpufreq_driver_target(policy,
+			requested_freq[cpu],
+			CPUFREQ_RELATION_H);
+		return;
+	}
+}
+
+static void do_dbs_timer(void *data)
+{ 
+	int i;
+	down(&dbs_sem);
+	for_each_online_cpu(i)
+		dbs_check_cpu(i);
+	schedule_delayed_work(&dbs_work, 
+			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
+	up(&dbs_sem);
+} 
+
+static inline void dbs_timer_init(void)
+{
+	INIT_WORK(&dbs_work, do_dbs_timer, NULL);
+	schedule_delayed_work(&dbs_work,
+			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
+	return;
+}
+
+static inline void dbs_timer_exit(void)
+{
+	cancel_delayed_work(&dbs_work);
+	return;
+}
+
+static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
+				   unsigned int event)
+{
+	unsigned int cpu = policy->cpu;
+	struct cpu_dbs_info_s *this_dbs_info;
+	unsigned int j;
+
+	this_dbs_info = &per_cpu(cpu_dbs_info, cpu);
+
+	switch (event) {
+	case CPUFREQ_GOV_START:
+		if ((!cpu_online(cpu)) || 
+		    (!policy->cur))
+			return -EINVAL;
+
+		if (policy->cpuinfo.transition_latency >
+				(TRANSITION_LATENCY_LIMIT * 1000))
+			return -EINVAL;
+		if (this_dbs_info->enable) /* Already enabled */
+			break;
+		 
+		down(&dbs_sem);
+		for_each_cpu_mask(j, policy->cpus) {
+			struct cpu_dbs_info_s *j_dbs_info;
+			j_dbs_info = &per_cpu(cpu_dbs_info, j);
+			j_dbs_info->cur_policy = policy;
+		
+			j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
+			j_dbs_info->prev_cpu_idle_down
+				= j_dbs_info->prev_cpu_idle_up;
+		}
+		this_dbs_info->enable = 1;
+		sysfs_create_group(&policy->kobj, &dbs_attr_group);
+		dbs_enable++;
+		/*
+		 * Start the timerschedule work, when this governor
+		 * is used for first time
+		 */
+		if (dbs_enable == 1) {
+			unsigned int latency;
+			/* policy latency is in nS. Convert it to uS first */
+
+			latency = policy->cpuinfo.transition_latency;
+			if (latency < 1000)
+				latency = 1000;
+
+			def_sampling_rate = (latency / 1000) *
+					DEF_SAMPLING_RATE_LATENCY_MULTIPLIER;
+			dbs_tuners_ins.sampling_rate = def_sampling_rate;
+			dbs_tuners_ins.ignore_nice = 0;
+			dbs_tuners_ins.freq_step = 5;
+
+			dbs_timer_init();
+		}
+		
+		up(&dbs_sem);
+		break;
+
+	case CPUFREQ_GOV_STOP:
+		down(&dbs_sem);
+		this_dbs_info->enable = 0;
+		sysfs_remove_group(&policy->kobj, &dbs_attr_group);
+		dbs_enable--;
+		/*
+		 * Stop the timerschedule work, when this governor
+		 * is used for first time
+		 */
+		if (dbs_enable == 0) 
+			dbs_timer_exit();
+		
+		up(&dbs_sem);
+
+		break;
+
+	case CPUFREQ_GOV_LIMITS:
+		down(&dbs_sem);
+		if (policy->max < this_dbs_info->cur_policy->cur)
+			__cpufreq_driver_target(
+					this_dbs_info->cur_policy,
+				       	policy->max, CPUFREQ_RELATION_H);
+		else if (policy->min > this_dbs_info->cur_policy->cur)
+			__cpufreq_driver_target(
+					this_dbs_info->cur_policy,
+				       	policy->min, CPUFREQ_RELATION_L);
+		up(&dbs_sem);
+		break;
+	}
+	return 0;
+}
+
+static struct cpufreq_governor cpufreq_gov_dbs = {
+	.name		= "conservative",
+	.governor	= cpufreq_governor_dbs,
+	.owner		= THIS_MODULE,
+};
+
+static int __init cpufreq_gov_dbs_init(void)
+{
+	return cpufreq_register_governor(&cpufreq_gov_dbs);
+}
+
+static void __exit cpufreq_gov_dbs_exit(void)
+{
+	/* Make sure that the scheduled work is indeed not running */
+	flush_scheduled_work();
+
+	cpufreq_unregister_governor(&cpufreq_gov_dbs);
+}
+
+
+MODULE_AUTHOR ("Alexander Clouter <alex-kernel@digriz.org.uk>");
+MODULE_DESCRIPTION ("'cpufreq_conservative' - A dynamic cpufreq governor for "
+		"Low Latency Frequency Transition capable processors "
+		"optimised for use in a battery environment");
+MODULE_LICENSE ("GPL");
+
+module_init(cpufreq_gov_dbs_init);
+module_exit(cpufreq_gov_dbs_exit);

drivers/cpufreq/cpufreq_ondemand.c

@@ -34,13 +34,9 @@
  */
 
 #define DEF_FREQUENCY_UP_THRESHOLD		(80)
-#define MIN_FREQUENCY_UP_THRESHOLD		(0)
+#define MIN_FREQUENCY_UP_THRESHOLD		(11)
 #define MAX_FREQUENCY_UP_THRESHOLD		(100)
 
-#define DEF_FREQUENCY_DOWN_THRESHOLD		(20)
-#define MIN_FREQUENCY_DOWN_THRESHOLD		(0)
-#define MAX_FREQUENCY_DOWN_THRESHOLD		(100)
-
 /* 
  * The polling frequency of this governor depends on the capability of 
  * the processor. Default polling frequency is 1000 times the transition
@@ -55,9 +51,9 @@ static unsigned int 				def_sampling_rate;
 #define MIN_SAMPLING_RATE			(def_sampling_rate / 2)
 #define MAX_SAMPLING_RATE			(500 * def_sampling_rate)
 #define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER	(1000)
-#define DEF_SAMPLING_DOWN_FACTOR		(10)
+#define DEF_SAMPLING_DOWN_FACTOR		(1)
+#define MAX_SAMPLING_DOWN_FACTOR		(10)
 #define TRANSITION_LATENCY_LIMIT		(10 * 1000)
-#define sampling_rate_in_HZ(x)			(((x * HZ) < (1000 * 1000))?1:((x * HZ) / (1000 * 1000)))
 
 static void do_dbs_timer(void *data);
 
@@ -78,15 +74,23 @@ struct dbs_tuners {
 	unsigned int 		sampling_rate;
 	unsigned int		sampling_down_factor;
 	unsigned int		up_threshold;
-	unsigned int		down_threshold;
+	unsigned int		ignore_nice;
 };
 
 static struct dbs_tuners dbs_tuners_ins = {
 	.up_threshold 		= DEF_FREQUENCY_UP_THRESHOLD,
-	.down_threshold 	= DEF_FREQUENCY_DOWN_THRESHOLD,
 	.sampling_down_factor 	= DEF_SAMPLING_DOWN_FACTOR,
 };
 
+static inline unsigned int get_cpu_idle_time(unsigned int cpu)
+{
+	return	kstat_cpu(cpu).cpustat.idle +
+		kstat_cpu(cpu).cpustat.iowait +
+		( !dbs_tuners_ins.ignore_nice ? 
+		  kstat_cpu(cpu).cpustat.nice :
+		  0);
+}
+
 /************************** sysfs interface ************************/
 static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
 {
@@ -115,7 +119,7 @@ static ssize_t show_##file_name						\
 show_one(sampling_rate, sampling_rate);
 show_one(sampling_down_factor, sampling_down_factor);
 show_one(up_threshold, up_threshold);
-show_one(down_threshold, down_threshold);
+show_one(ignore_nice, ignore_nice);
 
 static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused, 
 		const char *buf, size_t count)
@@ -126,6 +130,9 @@ static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused,
 	if (ret != 1 )
 		return -EINVAL;
 
+	if (input > MAX_SAMPLING_DOWN_FACTOR || input < 1)
+		return -EINVAL;
+
 	down(&dbs_sem);
 	dbs_tuners_ins.sampling_down_factor = input;
 	up(&dbs_sem);
@@ -161,8 +168,7 @@ static ssize_t store_up_threshold(struct cpufreq_policy *unused,
 
 	down(&dbs_sem);
 	if (ret != 1 || input > MAX_FREQUENCY_UP_THRESHOLD || 
-			input < MIN_FREQUENCY_UP_THRESHOLD ||
-			input <= dbs_tuners_ins.down_threshold) {
+			input < MIN_FREQUENCY_UP_THRESHOLD) {
 		up(&dbs_sem);
 		return -EINVAL;
 	}
@@ -173,22 +179,35 @@ static ssize_t store_up_threshold(struct cpufreq_policy *unused,
 	return count;
 }
 
-static ssize_t store_down_threshold(struct cpufreq_policy *unused, 
+static ssize_t store_ignore_nice(struct cpufreq_policy *policy,
 		const char *buf, size_t count)
 {
 	unsigned int input;
 	int ret;
+
+	unsigned int j;
+	
 	ret = sscanf (buf, "%u", &input);
+	if ( ret != 1 )
+		return -EINVAL;
 
+	if ( input > 1 )
+		input = 1;
+	
 	down(&dbs_sem);
-	if (ret != 1 || input > MAX_FREQUENCY_DOWN_THRESHOLD || 
-			input < MIN_FREQUENCY_DOWN_THRESHOLD ||
-			input >= dbs_tuners_ins.up_threshold) {
+	if ( input == dbs_tuners_ins.ignore_nice ) { /* nothing to do */
 		up(&dbs_sem);
-		return -EINVAL;
+		return count;
 	}
+	dbs_tuners_ins.ignore_nice = input;
 
-	dbs_tuners_ins.down_threshold = input;
+	/* we need to re-evaluate prev_cpu_idle_up and prev_cpu_idle_down */
+	for_each_online_cpu(j) {
+		struct cpu_dbs_info_s *j_dbs_info;
+		j_dbs_info = &per_cpu(cpu_dbs_info, j);
+		j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
+		j_dbs_info->prev_cpu_idle_down = j_dbs_info->prev_cpu_idle_up;
+	}
 	up(&dbs_sem);
 
 	return count;
@@ -201,7 +220,7 @@ __ATTR(_name, 0644, show_##_name, store_##_name)
 define_one_rw(sampling_rate);
 define_one_rw(sampling_down_factor);
 define_one_rw(up_threshold);
-define_one_rw(down_threshold);
+define_one_rw(ignore_nice);
 
 static struct attribute * dbs_attributes[] = {
 	&sampling_rate_max.attr,
@@ -209,7 +228,7 @@ static struct attribute * dbs_attributes[] = {
 	&sampling_rate.attr,
 	&sampling_down_factor.attr,
 	&up_threshold.attr,
-	&down_threshold.attr,
+	&ignore_nice.attr,
 	NULL
 };
 
@@ -222,9 +241,8 @@ static struct attribute_group dbs_attr_group = {
 
 static void dbs_check_cpu(int cpu)
 {
-	unsigned int idle_ticks, up_idle_ticks, down_idle_ticks;
-	unsigned int total_idle_ticks;
-	unsigned int freq_down_step;
+	unsigned int idle_ticks, up_idle_ticks, total_ticks;
+	unsigned int freq_next;
 	unsigned int freq_down_sampling_rate;
 	static int down_skip[NR_CPUS];
 	struct cpu_dbs_info_s *this_dbs_info;
@@ -238,38 +256,25 @@ static void dbs_check_cpu(int cpu)
 
 	policy = this_dbs_info->cur_policy;
 	/* 
-	 * The default safe range is 20% to 80% 
-	 * Every sampling_rate, we check
-	 * 	- If current idle time is less than 20%, then we try to 
-	 * 	  increase frequency
-	 * Every sampling_rate*sampling_down_factor, we check
-	 * 	- If current idle time is more than 80%, then we try to
-	 * 	  decrease frequency
+	 * Every sampling_rate, we check, if current idle time is less
+	 * than 20% (default), then we try to increase frequency
+	 * Every sampling_rate*sampling_down_factor, we look for a the lowest
+	 * frequency which can sustain the load while keeping idle time over
+	 * 30%. If such a frequency exist, we try to decrease to this frequency.
 	 *
 	 * Any frequency increase takes it to the maximum frequency. 
 	 * Frequency reduction happens at minimum steps of 
-	 * 5% of max_frequency 
+	 * 5% (default) of current frequency 
 	 */
 
 	/* Check for frequency increase */
-	total_idle_ticks = kstat_cpu(cpu).cpustat.idle +
-		kstat_cpu(cpu).cpustat.iowait;
-	idle_ticks = total_idle_ticks -
-		this_dbs_info->prev_cpu_idle_up;
-	this_dbs_info->prev_cpu_idle_up = total_idle_ticks;
-	
-
+	idle_ticks = UINT_MAX;
 	for_each_cpu_mask(j, policy->cpus) {
-		unsigned int tmp_idle_ticks;
+		unsigned int tmp_idle_ticks, total_idle_ticks;
 		struct cpu_dbs_info_s *j_dbs_info;
 
-		if (j == cpu)
-			continue;
-
 		j_dbs_info = &per_cpu(cpu_dbs_info, j);
-		/* Check for frequency increase */
-		total_idle_ticks = kstat_cpu(j).cpustat.idle +
-			kstat_cpu(j).cpustat.iowait;
+		total_idle_ticks = get_cpu_idle_time(j);
 		tmp_idle_ticks = total_idle_ticks -
 			j_dbs_info->prev_cpu_idle_up;
 		j_dbs_info->prev_cpu_idle_up = total_idle_ticks;
@@ -281,13 +286,23 @@ static void dbs_check_cpu(int cpu)
 	/* Scale idle ticks by 100 and compare with up and down ticks */
 	idle_ticks *= 100;
 	up_idle_ticks = (100 - dbs_tuners_ins.up_threshold) *
-			sampling_rate_in_HZ(dbs_tuners_ins.sampling_rate);
+			usecs_to_jiffies(dbs_tuners_ins.sampling_rate);
 
 	if (idle_ticks < up_idle_ticks) {
+		down_skip[cpu] = 0;
+		for_each_cpu_mask(j, policy->cpus) {
+			struct cpu_dbs_info_s *j_dbs_info;
+
+			j_dbs_info = &per_cpu(cpu_dbs_info, j);
+			j_dbs_info->prev_cpu_idle_down = 
+					j_dbs_info->prev_cpu_idle_up;
+		}
+		/* if we are already at full speed then break out early */
+		if (policy->cur == policy->max)
+			return;
+		
 		__cpufreq_driver_target(policy, policy->max, 
 			CPUFREQ_RELATION_H);
-		down_skip[cpu] = 0;
-		this_dbs_info->prev_cpu_idle_down = total_idle_ticks;
 		return;
 	}
 
@@ -296,23 +311,14 @@ static void dbs_check_cpu(int cpu)
 	if (down_skip[cpu] < dbs_tuners_ins.sampling_down_factor)
 		return;
 
-	total_idle_ticks = kstat_cpu(cpu).cpustat.idle +
-		kstat_cpu(cpu).cpustat.iowait;
-	idle_ticks = total_idle_ticks -
-		this_dbs_info->prev_cpu_idle_down;
-	this_dbs_info->prev_cpu_idle_down = total_idle_ticks;
-
+	idle_ticks = UINT_MAX;
 	for_each_cpu_mask(j, policy->cpus) {
-		unsigned int tmp_idle_ticks;
+		unsigned int tmp_idle_ticks, total_idle_ticks;
 		struct cpu_dbs_info_s *j_dbs_info;
 
-		if (j == cpu)
-			continue;
-
 		j_dbs_info = &per_cpu(cpu_dbs_info, j);
-		/* Check for frequency increase */
-		total_idle_ticks = kstat_cpu(j).cpustat.idle +
-			kstat_cpu(j).cpustat.iowait;
+		/* Check for frequency decrease */
+		total_idle_ticks = j_dbs_info->prev_cpu_idle_up;
 		tmp_idle_ticks = total_idle_ticks -
 			j_dbs_info->prev_cpu_idle_down;
 		j_dbs_info->prev_cpu_idle_down = total_idle_ticks;
@@ -321,38 +327,37 @@ static void dbs_check_cpu(int cpu)
 			idle_ticks = tmp_idle_ticks;
 	}
 
-	/* Scale idle ticks by 100 and compare with up and down ticks */
-	idle_ticks *= 100;
 	down_skip[cpu] = 0;
+	/* if we cannot reduce the frequency anymore, break out early */
+	if (policy->cur == policy->min)
+		return;
 
+	/* Compute how many ticks there are between two measurements */
 	freq_down_sampling_rate = dbs_tuners_ins.sampling_rate *
 		dbs_tuners_ins.sampling_down_factor;
-	down_idle_ticks = (100 - dbs_tuners_ins.down_threshold) *
-			sampling_rate_in_HZ(freq_down_sampling_rate);
+	total_ticks = usecs_to_jiffies(freq_down_sampling_rate);
 
-	if (idle_ticks > down_idle_ticks ) {
-		freq_down_step = (5 * policy->max) / 100;
-
-		/* max freq cannot be less than 100. But who knows.... */
-		if (unlikely(freq_down_step == 0))
-			freq_down_step = 5;
+	/*
+	 * The optimal frequency is the frequency that is the lowest that
+	 * can support the current CPU usage without triggering the up
+	 * policy. To be safe, we focus 10 points under the threshold.
+	 */
+	freq_next = ((total_ticks - idle_ticks) * 100) / total_ticks;
+	freq_next = (freq_next * policy->cur) / 
+			(dbs_tuners_ins.up_threshold - 10);
 
-		__cpufreq_driver_target(policy,
-			policy->cur - freq_down_step, 
-			CPUFREQ_RELATION_H);
-		return;
-	}
+	if (freq_next <= ((policy->cur * 95) / 100))
+		__cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L);
 }
 
 static void do_dbs_timer(void *data)
 { 
 	int i;
 	down(&dbs_sem);
-	for (i = 0; i < NR_CPUS; i++)
-		if (cpu_online(i))
-			dbs_check_cpu(i);
+	for_each_online_cpu(i)
+		dbs_check_cpu(i);
 	schedule_delayed_work(&dbs_work, 
-			sampling_rate_in_HZ(dbs_tuners_ins.sampling_rate));
+			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
 	up(&dbs_sem);
 } 
 
@@ -360,7 +365,7 @@ static inline void dbs_timer_init(void)
 {
 	INIT_WORK(&dbs_work, do_dbs_timer, NULL);
 	schedule_delayed_work(&dbs_work,
-			sampling_rate_in_HZ(dbs_tuners_ins.sampling_rate));
+			usecs_to_jiffies(dbs_tuners_ins.sampling_rate));
 	return;
 }
 
@@ -397,12 +402,9 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 			j_dbs_info = &per_cpu(cpu_dbs_info, j);
 			j_dbs_info->cur_policy = policy;
 		
-			j_dbs_info->prev_cpu_idle_up = 
-				kstat_cpu(j).cpustat.idle +
-				kstat_cpu(j).cpustat.iowait;
-			j_dbs_info->prev_cpu_idle_down = 
-				kstat_cpu(j).cpustat.idle +
-				kstat_cpu(j).cpustat.iowait;
+			j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j);
+			j_dbs_info->prev_cpu_idle_down
+				= j_dbs_info->prev_cpu_idle_up;
 		}
 		this_dbs_info->enable = 1;
 		sysfs_create_group(&policy->kobj, &dbs_attr_group);
@@ -422,6 +424,7 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 			def_sampling_rate = (latency / 1000) *
 					DEF_SAMPLING_RATE_LATENCY_MULTIPLIER;
 			dbs_tuners_ins.sampling_rate = def_sampling_rate;
+			dbs_tuners_ins.ignore_nice = 0;
 
 			dbs_timer_init();
 		}
@@ -461,12 +464,11 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 	return 0;
 }
 
-struct cpufreq_governor cpufreq_gov_dbs = {
+static struct cpufreq_governor cpufreq_gov_dbs = {
 	.name		= "ondemand",
 	.governor	= cpufreq_governor_dbs,
 	.owner		= THIS_MODULE,
 };
-EXPORT_SYMBOL(cpufreq_gov_dbs);
 
 static int __init cpufreq_gov_dbs_init(void)
 {

drivers/cpufreq/cpufreq_stats.c

@@ -19,6 +19,7 @@
 #include <linux/percpu.h>
 #include <linux/kobject.h>
 #include <linux/spinlock.h>
+#include <asm/cputime.h>
 
 static spinlock_t cpufreq_stats_lock;
 
@@ -29,20 +30,14 @@ static struct freq_attr _attr_##_name = {\
 	.show = _show,\
 };
 
-static unsigned long
-delta_time(unsigned long old, unsigned long new)
-{
-	return (old > new) ? (old - new): (new + ~old + 1);
-}
-
 struct cpufreq_stats {
 	unsigned int cpu;
 	unsigned int total_trans;
-	unsigned long long last_time;
+	unsigned long long  last_time;
 	unsigned int max_state;
 	unsigned int state_num;
 	unsigned int last_index;
-	unsigned long long *time_in_state;
+	cputime64_t *time_in_state;
 	unsigned int *freq_table;
 #ifdef CONFIG_CPU_FREQ_STAT_DETAILS
 	unsigned int *trans_table;
@@ -60,12 +55,16 @@ static int
 cpufreq_stats_update (unsigned int cpu)
 {
 	struct cpufreq_stats *stat;
+	unsigned long long cur_time;
+
+	cur_time = get_jiffies_64();
 	spin_lock(&cpufreq_stats_lock);
 	stat = cpufreq_stats_table[cpu];
 	if (stat->time_in_state)
-		stat->time_in_state[stat->last_index] +=
-			delta_time(stat->last_time, jiffies);
-	stat->last_time = jiffies;
+		stat->time_in_state[stat->last_index] =
+			cputime64_add(stat->time_in_state[stat->last_index],
+				      cputime_sub(cur_time, stat->last_time));
+	stat->last_time = cur_time;
 	spin_unlock(&cpufreq_stats_lock);
 	return 0;
 }
@@ -90,8 +89,8 @@ show_time_in_state(struct cpufreq_policy *policy, char *buf)
 		return 0;
 	cpufreq_stats_update(stat->cpu);
 	for (i = 0; i < stat->state_num; i++) {
-		len += sprintf(buf + len, "%u %llu\n",
-			stat->freq_table[i], stat->time_in_state[i]);
+		len += sprintf(buf + len, "%u %llu\n", stat->freq_table[i], 
+			(unsigned long long)cputime64_to_clock_t(stat->time_in_state[i]));
 	}
 	return len;
 }
@@ -107,16 +106,30 @@ show_trans_table(struct cpufreq_policy *policy, char *buf)
 	if(!stat)
 		return 0;
 	cpufreq_stats_update(stat->cpu);
+	len += snprintf(buf + len, PAGE_SIZE - len, "   From  :    To\n");
+	len += snprintf(buf + len, PAGE_SIZE - len, "         : ");
+	for (i = 0; i < stat->state_num; i++) {
+		if (len >= PAGE_SIZE)
+			break;
+		len += snprintf(buf + len, PAGE_SIZE - len, "%9u ",
+				stat->freq_table[i]);
+	}
+	if (len >= PAGE_SIZE)
+		return len;
+
+	len += snprintf(buf + len, PAGE_SIZE - len, "\n");
+
 	for (i = 0; i < stat->state_num; i++) {
 		if (len >= PAGE_SIZE)
 			break;
-		len += snprintf(buf + len, PAGE_SIZE - len, "%9u:\t",
+
+		len += snprintf(buf + len, PAGE_SIZE - len, "%9u: ",
 				stat->freq_table[i]);
 
 		for (j = 0; j < stat->state_num; j++)   {
 			if (len >= PAGE_SIZE)
 				break;
-			len += snprintf(buf + len, PAGE_SIZE - len, "%u\t",
+			len += snprintf(buf + len, PAGE_SIZE - len, "%9u ",
 					stat->trans_table[i*stat->max_state+j]);
 		}
 		len += snprintf(buf + len, PAGE_SIZE - len, "\n");
@@ -197,7 +210,7 @@ cpufreq_stats_create_table (struct cpufreq_policy *policy,
 		count++;
 	}
 
-	alloc_size = count * sizeof(int) + count * sizeof(long long);
+	alloc_size = count * sizeof(int) + count * sizeof(cputime64_t);
 
 #ifdef CONFIG_CPU_FREQ_STAT_DETAILS
 	alloc_size += count * count * sizeof(int);
@@ -224,7 +237,7 @@ cpufreq_stats_create_table (struct cpufreq_policy *policy,
 	}
 	stat->state_num = j;
 	spin_lock(&cpufreq_stats_lock);
-	stat->last_time = jiffies;
+	stat->last_time = get_jiffies_64();
 	stat->last_index = freq_table_get_index(stat, policy->cur);
 	spin_unlock(&cpufreq_stats_lock);
 	cpufreq_cpu_put(data);

drivers/firmware/pcdp.c

@@ -11,6 +11,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/config.h>
 #include <linux/acpi.h>
 #include <linux/console.h>
 #include <linux/efi.h>

drivers/i2c/busses/i2c-ali1563.c

@@ -2,6 +2,7 @@
  *	i2c-ali1563.c - i2c driver for the ALi 1563 Southbridge
  *
  *	Copyright (C) 2004 Patrick Mochel
+ *		      2005 Rudolf Marek <r.marek@sh.cvut.cz>
  *
  *	The 1563 southbridge is deceptively similar to the 1533, with a
  *	few notable exceptions. One of those happens to be the fact they
@@ -57,10 +58,11 @@
 #define HST_CNTL2_BLOCK		0x05
 
 
+#define HST_CNTL2_SIZEMASK	0x38
 
 static unsigned short ali1563_smba;
 
-static int ali1563_transaction(struct i2c_adapter * a)
+static int ali1563_transaction(struct i2c_adapter * a, int size)
 {
 	u32 data;
 	int timeout;
@@ -73,7 +75,7 @@ static int ali1563_transaction(struct i2c_adapter * a)
 
 	data = inb_p(SMB_HST_STS);
 	if (data & HST_STS_BAD) {
-		dev_warn(&a->dev,"ali1563: Trying to reset busy device\n");
+		dev_err(&a->dev, "ali1563: Trying to reset busy device\n");
 		outb_p(data | HST_STS_BAD,SMB_HST_STS);
 		data = inb_p(SMB_HST_STS);
 		if (data & HST_STS_BAD)
@@ -94,19 +96,31 @@ static int ali1563_transaction(struct i2c_adapter * a)
 
 	if (timeout && !(data & HST_STS_BAD))
 		return 0;
-	dev_warn(&a->dev, "SMBus Error: %s%s%s%s%s\n",
-		timeout ? "Timeout " : "",
-		data & HST_STS_FAIL ? "Transaction Failed " : "",
-		data & HST_STS_BUSERR ? "No response or Bus Collision " : "",
-		data & HST_STS_DEVERR ? "Device Error " : "",
-		!(data & HST_STS_DONE) ? "Transaction Never Finished " : "");
 
-	if (!(data & HST_STS_DONE))
+	if (!timeout) {
+		dev_err(&a->dev, "Timeout - Trying to KILL transaction!\n");
 		/* Issue 'kill' to host controller */
 		outb_p(HST_CNTL2_KILL,SMB_HST_CNTL2);
-	else
-		/* Issue timeout to reset all devices on bus */
+		data = inb_p(SMB_HST_STS);
+ 	}
+
+	/* device error - no response, ignore the autodetection case */
+	if ((data & HST_STS_DEVERR) && (size != HST_CNTL2_QUICK)) {
+		dev_err(&a->dev, "Device error!\n");
+	}
+
+	/* bus collision */
+	if (data & HST_STS_BUSERR) {
+		dev_err(&a->dev, "Bus collision!\n");
+		/* Issue timeout, hoping it helps */
 		outb_p(HST_CNTL1_TIMEOUT,SMB_HST_CNTL1);
+	}
+
+	if (data & HST_STS_FAIL) {
+		dev_err(&a->dev, "Cleaning fail after KILL!\n");
+		outb_p(0x0,SMB_HST_CNTL2);
+	}
+
 	return -1;
 }
 
@@ -149,7 +163,7 @@ static int ali1563_block_start(struct i2c_adapter * a)
 
 	if (timeout && !(data & HST_STS_BAD))
 		return 0;
-	dev_warn(&a->dev, "SMBus Error: %s%s%s%s%s\n",
+	dev_err(&a->dev, "SMBus Error: %s%s%s%s%s\n",
 		timeout ? "Timeout " : "",
 		data & HST_STS_FAIL ? "Transaction Failed " : "",
 		data & HST_STS_BUSERR ? "No response or Bus Collision " : "",
@@ -242,13 +256,15 @@ static s32 ali1563_access(struct i2c_adapter * a, u16 addr,
 	}
 
 	outb_p(((addr & 0x7f) << 1) | (rw & 0x01), SMB_HST_ADD);
-	outb_p(inb_p(SMB_HST_CNTL2) | (size << 3), SMB_HST_CNTL2);
+	outb_p((inb_p(SMB_HST_CNTL2) & ~HST_CNTL2_SIZEMASK) | (size << 3), SMB_HST_CNTL2);
 
 	/* Write the command register */
+
 	switch(size) {
 	case HST_CNTL2_BYTE:
 		if (rw== I2C_SMBUS_WRITE)
-			outb_p(cmd, SMB_HST_CMD);
+			/* Beware it uses DAT0 register and not CMD! */
+			outb_p(cmd, SMB_HST_DAT0);
 		break;
 	case HST_CNTL2_BYTE_DATA:
 		outb_p(cmd, SMB_HST_CMD);
@@ -268,7 +284,7 @@ static s32 ali1563_access(struct i2c_adapter * a, u16 addr,
 		goto Done;
 	}
 
-	if ((error = ali1563_transaction(a)))
+	if ((error = ali1563_transaction(a, size)))
 		goto Done;
 
 	if ((rw == I2C_SMBUS_WRITE) || (size == HST_CNTL2_QUICK))

drivers/ide/ide-cd.c

@@ -1936,7 +1936,7 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 		 * NOTE! The "len" and "addr" checks should possibly have
 		 * separate masks.
 		 */
-		if ((rq->data_len & mask) || (addr & mask))
+		if ((rq->data_len & 15) || (addr & mask))
 			info->dma = 0;
 	}
 

drivers/ide/pci/amd74xx.c

@@ -72,6 +72,7 @@ static struct amd_ide_chip {
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2,	0x50, AMD_UDMA_133 },
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE,	0x50, AMD_UDMA_133 },
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE,	0x50, AMD_UDMA_133 },
+	{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE,	0x50, AMD_UDMA_133 },
 	{ 0 }
 };
 
@@ -487,6 +488,7 @@ static ide_pci_device_t amd74xx_chipsets[] __devinitdata = {
 	/* 12 */ DECLARE_NV_DEV("NFORCE3-250-SATA2"),
 	/* 13 */ DECLARE_NV_DEV("NFORCE-CK804"),
 	/* 14 */ DECLARE_NV_DEV("NFORCE-MCP04"),
+	/* 15 */ DECLARE_NV_DEV("NFORCE-MCP51"),
 };
 
 static int __devinit amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)
@@ -521,6 +523,7 @@ static struct pci_device_id amd74xx_pci_tbl[] = {
 #endif
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 15 },
 	{ 0, },
 };
 MODULE_DEVICE_TABLE(pci, amd74xx_pci_tbl);

drivers/input/keyboard/atkbd.c

@@ -54,7 +54,7 @@ static int atkbd_softraw = 1;
 module_param_named(softraw, atkbd_softraw, bool, 0);
 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
 
-static int atkbd_scroll = 1;
+static int atkbd_scroll = 0;
 module_param_named(scroll, atkbd_scroll, bool, 0);
 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
 

drivers/net/hamradio/baycom_epp.c

@@ -374,29 +374,6 @@ static inline void do_kiss_params(struct baycom_state *bc,
 }
 
 /* --------------------------------------------------------------------- */
-/*
- * high performance HDLC encoder
- * yes, it's ugly, but generates pretty good code
- */
-
-#define ENCODEITERA(j)                         \
-({                                             \
-        if (!(notbitstream & (0x1f0 << j)))    \
-                goto stuff##j;                 \
-  encodeend##j:    	;                      \
-})
-
-#define ENCODEITERB(j)                                          \
-({                                                              \
-  stuff##j:                                                     \
-        bitstream &= ~(0x100 << j);                             \
-        bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) |        \
-                ((bitbuf & ~(((2 << j) << numbit) - 1)) << 1);  \
-        numbit++;                                               \
-        notbitstream = ~bitstream;                              \
-        goto encodeend##j;                                      \
-})
-
 
 static void encode_hdlc(struct baycom_state *bc)
 {
@@ -405,6 +382,7 @@ static void encode_hdlc(struct baycom_state *bc)
 	int pkt_len;
         unsigned bitstream, notbitstream, bitbuf, numbit, crc;
 	unsigned char crcarr[2];
+	int j;
 	
 	if (bc->hdlctx.bufcnt > 0)
 		return;
@@ -429,24 +407,14 @@ static void encode_hdlc(struct baycom_state *bc)
 		pkt_len--;
 		if (!pkt_len)
 			bp = crcarr;
-		ENCODEITERA(0);
-		ENCODEITERA(1);
-		ENCODEITERA(2);
-		ENCODEITERA(3);
-		ENCODEITERA(4);
-		ENCODEITERA(5);
-		ENCODEITERA(6);
-		ENCODEITERA(7);
-		goto enditer;
-		ENCODEITERB(0);
-		ENCODEITERB(1);
-		ENCODEITERB(2);
-		ENCODEITERB(3);
-		ENCODEITERB(4);
-		ENCODEITERB(5);
-		ENCODEITERB(6);
-		ENCODEITERB(7);
-	enditer:
+		for (j = 0; j < 8; j++)
+			if (unlikely(!(notbitstream & (0x1f0 << j)))) {
+				bitstream &= ~(0x100 << j);
+ 				bitbuf = (bitbuf & (((2 << j) << numbit) - 1)) |
+					((bitbuf & ~(((2 << j) << numbit) - 1)) << 1);
+				numbit++;
+				notbitstream = ~bitstream;
+			}
 		numbit += 8;
 		while (numbit >= 8) {
 			*wp++ = bitbuf;
@@ -610,37 +578,6 @@ static void do_rxpacket(struct net_device *dev)
 	bc->stats.rx_packets++;
 }
 
-#define DECODEITERA(j)                                                        \
-({                                                                            \
-        if (!(notbitstream & (0x0fc << j)))              /* flag or abort */  \
-                goto flgabrt##j;                                              \
-        if ((bitstream & (0x1f8 << j)) == (0xf8 << j))   /* stuffed bit */    \
-                goto stuff##j;                                                \
-  enditer##j:      ;                                                           \
-})
-
-#define DECODEITERB(j)                                                                 \
-({                                                                                     \
-  flgabrt##j:                                                                          \
-        if (!(notbitstream & (0x1fc << j))) {              /* abort received */        \
-                state = 0;                                                             \
-                goto enditer##j;                                                       \
-        }                                                                              \
-        if ((bitstream & (0x1fe << j)) != (0x0fc << j))   /* flag received */          \
-                goto enditer##j;                                                       \
-        if (state)                                                                     \
-                do_rxpacket(dev);                                                      \
-        bc->hdlcrx.bufcnt = 0;                                                         \
-        bc->hdlcrx.bufptr = bc->hdlcrx.buf;                                            \
-        state = 1;                                                                     \
-        numbits = 7-j;                                                                 \
-        goto enditer##j;                                                               \
-  stuff##j:                                                                            \
-        numbits--;                                                                     \
-        bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1);        \
-        goto enditer##j;                                                               \
-})
-        
 static int receive(struct net_device *dev, int cnt)
 {
 	struct baycom_state *bc = netdev_priv(dev);
@@ -649,6 +586,7 @@ static int receive(struct net_device *dev, int cnt)
 	unsigned char tmp[128];
         unsigned char *cp;
 	int cnt2, ret = 0;
+	int j;
         
         numbits = bc->hdlcrx.numbits;
 	state = bc->hdlcrx.state;
@@ -669,24 +607,32 @@ static int receive(struct net_device *dev, int cnt)
 			bitbuf |= (*cp) << 8;
 			numbits += 8;
 			notbitstream = ~bitstream;
-			DECODEITERA(0);
-			DECODEITERA(1);
-			DECODEITERA(2);
-			DECODEITERA(3);
-			DECODEITERA(4);
-			DECODEITERA(5);
-			DECODEITERA(6);
-			DECODEITERA(7);
-			goto enddec;
-			DECODEITERB(0);
-			DECODEITERB(1);
-			DECODEITERB(2);
-			DECODEITERB(3);
-			DECODEITERB(4);
-			DECODEITERB(5);
-			DECODEITERB(6);
-			DECODEITERB(7);
-		enddec:
+			for (j = 0; j < 8; j++) {
+
+				/* flag or abort */
+			        if (unlikely(!(notbitstream & (0x0fc << j)))) {
+
+					/* abort received */
+					if (!(notbitstream & (0x1fc << j)))
+						state = 0;
+
+					/* not flag received */
+					else if (!(bitstream & (0x1fe << j)) != (0x0fc << j)) {
+						if (state)
+							do_rxpacket(dev);
+						bc->hdlcrx.bufcnt = 0;
+						bc->hdlcrx.bufptr = bc->hdlcrx.buf;
+						state = 1;
+						numbits = 7-j;
+						}
+					}
+
+				/* stuffed bit */
+				else if (unlikely((bitstream & (0x1f8 << j)) == (0xf8 << j))) {
+					numbits--;
+					bitbuf = (bitbuf & ((~0xff) << j)) | ((bitbuf & ~((~0xff) << j)) << 1);
+					}
+				}
 			while (state && numbits >= 8) {
 				if (bc->hdlcrx.bufcnt >= TXBUFFER_SIZE) {
 					state = 0;

drivers/net/pcmcia/3c574_cs.c

@@ -1274,6 +1274,9 @@ static int el3_close(struct net_device *dev)
 		spin_lock_irqsave(&lp->window_lock, flags);
 		update_stats(dev);
 		spin_unlock_irqrestore(&lp->window_lock, flags);
+
+		/* force interrupts off */
+		outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
 	}
 
 	link->open--;

drivers/net/r8169.c

@@ -1585,8 +1585,8 @@ rtl8169_hw_start(struct net_device *dev)
 	RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
 	RTL_W8(EarlyTxThres, EarlyTxThld);
 
-	/* For gigabit rtl8169, MTU + header + CRC + VLAN */
-	RTL_W16(RxMaxSize, tp->rx_buf_sz);
+	/* Low hurts. Let's disable the filtering. */
+	RTL_W16(RxMaxSize, 16383);
 
 	/* Set Rx Config register */
 	i = rtl8169_rx_config |
@@ -2127,6 +2127,11 @@ rtl8169_tx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
 	}
 }
 
+static inline int rtl8169_fragmented_frame(u32 status)
+{
+	return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
+}
+
 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
 {
 	u32 opts1 = le32_to_cpu(desc->opts1);
@@ -2177,27 +2182,41 @@ rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
 
 	while (rx_left > 0) {
 		unsigned int entry = cur_rx % NUM_RX_DESC;
+		struct RxDesc *desc = tp->RxDescArray + entry;
 		u32 status;
 
 		rmb();
-		status = le32_to_cpu(tp->RxDescArray[entry].opts1);
+		status = le32_to_cpu(desc->opts1);
 
 		if (status & DescOwn)
 			break;
 		if (status & RxRES) {
-			printk(KERN_INFO "%s: Rx ERROR!!!\n", dev->name);
+			printk(KERN_INFO "%s: Rx ERROR. status = %08x\n",
+			       dev->name, status);
 			tp->stats.rx_errors++;
 			if (status & (RxRWT | RxRUNT))
 				tp->stats.rx_length_errors++;
 			if (status & RxCRC)
 				tp->stats.rx_crc_errors++;
+			rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
 		} else {
-			struct RxDesc *desc = tp->RxDescArray + entry;
 			struct sk_buff *skb = tp->Rx_skbuff[entry];
 			int pkt_size = (status & 0x00001FFF) - 4;
 			void (*pci_action)(struct pci_dev *, dma_addr_t,
 				size_t, int) = pci_dma_sync_single_for_device;
 
+			/*
+			 * The driver does not support incoming fragmented
+			 * frames. They are seen as a symptom of over-mtu
+			 * sized frames.
+			 */
+			if (unlikely(rtl8169_fragmented_frame(status))) {
+				tp->stats.rx_dropped++;
+				tp->stats.rx_length_errors++;
+				rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
+				goto move_on;
+			}
+
 			rtl8169_rx_csum(skb, desc);
 			
 			pci_dma_sync_single_for_cpu(tp->pci_dev,
@@ -2224,7 +2243,7 @@ rtl8169_rx_interrupt(struct net_device *dev, struct rtl8169_private *tp,
 			tp->stats.rx_bytes += pkt_size;
 			tp->stats.rx_packets++;
 		}
-		
+move_on:		
 		cur_rx++; 
 		rx_left--;
 	}

drivers/net/shaper.c

@@ -100,35 +100,8 @@ static int sh_debug;		/* Debug flag */
 
 #define SHAPER_BANNER	"CymruNet Traffic Shaper BETA 0.04 for Linux 2.1\n"
 
-/*
- *	Locking
- */
- 
-static int shaper_lock(struct shaper *sh)
-{
-	/*
-	 *	Lock in an interrupt must fail
-	 */
-	while (test_and_set_bit(0, &sh->locked))
-	{
-		if (!in_interrupt())
-			sleep_on(&sh->wait_queue);
-		else
-			return 0;
-			
-	}
-	return 1;
-}
-
 static void shaper_kick(struct shaper *sh);
 
-static void shaper_unlock(struct shaper *sh)
-{
-	clear_bit(0, &sh->locked);
-	wake_up(&sh->wait_queue);
-	shaper_kick(sh);
-}
-
 /*
  *	Compute clocks on a buffer
  */
@@ -157,17 +130,15 @@ static void shaper_setspeed(struct shaper *shaper, int bitspersec)
  *	Throw a frame at a shaper.
  */
   
-static int shaper_qframe(struct shaper *shaper, struct sk_buff *skb)
+
+static int shaper_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
+	struct shaper *shaper = dev->priv;
  	struct sk_buff *ptr;
    
- 	/*
- 	 *	Get ready to work on this shaper. Lock may fail if its
- 	 *	an interrupt and locked.
- 	 */
- 	 
- 	if(!shaper_lock(shaper))
- 		return -1;
+	if (down_trylock(&shaper->sem))
+		return -1;
+
  	ptr=shaper->sendq.prev;
  	
  	/*
@@ -260,7 +231,8 @@ static int shaper_qframe(struct shaper *shaper, struct sk_buff *skb)
                 dev_kfree_skb(ptr);
                 shaper->stats.collisions++;
  	}
- 	shaper_unlock(shaper);
+	shaper_kick(shaper);
+	up(&shaper->sem);
  	return 0;
 }
 
@@ -297,8 +269,13 @@ static void shaper_queue_xmit(struct shaper *shaper, struct sk_buff *skb)
  
 static void shaper_timer(unsigned long data)
 {
-	struct shaper *sh=(struct shaper *)data;
-	shaper_kick(sh);
+	struct shaper *shaper = (struct shaper *)data;
+
+	if (!down_trylock(&shaper->sem)) {
+		shaper_kick(shaper);
+		up(&shaper->sem);
+	} else
+		mod_timer(&shaper->timer, jiffies);
 }
 
 /*
@@ -310,19 +287,6 @@ static void shaper_kick(struct shaper *shaper)
 {
 	struct sk_buff *skb;
 	
-	/*
-	 *	Shaper unlock will kick
-	 */
-	 
-	if (test_and_set_bit(0, &shaper->locked))
-	{
-		if(sh_debug)
-			printk("Shaper locked.\n");
-		mod_timer(&shaper->timer, jiffies);
-		return;
-	}
-
-		
 	/*
 	 *	Walk the list (may be empty)
 	 */
@@ -364,8 +328,6 @@ static void shaper_kick(struct shaper *shaper)
 	 
 	if(skb!=NULL)
 		mod_timer(&shaper->timer, SHAPERCB(skb)->shapeclock);
-
-	clear_bit(0, &shaper->locked);
 }
 
 
@@ -376,14 +338,12 @@ static void shaper_kick(struct shaper *shaper)
 static void shaper_flush(struct shaper *shaper)
 {
 	struct sk_buff *skb;
- 	if(!shaper_lock(shaper))
-	{
-		printk(KERN_ERR "shaper: shaper_flush() called by an irq!\n");
- 		return;
-	}
+
+	down(&shaper->sem);
 	while((skb=skb_dequeue(&shaper->sendq))!=NULL)
 		dev_kfree_skb(skb);
-	shaper_unlock(shaper);
+	shaper_kick(shaper);
+	up(&shaper->sem);
 }
 
 /*
@@ -426,13 +386,6 @@ static int shaper_close(struct net_device *dev)
  *	ARP and other resolutions and not before.
  */
 
-
-static int shaper_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct shaper *sh=dev->priv;
-	return shaper_qframe(sh, skb);
-}
-
 static struct net_device_stats *shaper_get_stats(struct net_device *dev)
 {
      	struct shaper *sh=dev->priv;
@@ -623,7 +576,6 @@ static void shaper_init_priv(struct net_device *dev)
 	init_timer(&sh->timer);
 	sh->timer.function=shaper_timer;
 	sh->timer.data=(unsigned long)sh;
-	init_waitqueue_head(&sh->wait_queue);
 }
 
 /*

drivers/net/tg3.c

@@ -7,7 +7,12 @@
  * Copyright (C) 2005 Broadcom Corporation.
  *
  * Firmware is:
- * 	Copyright (C) 2000-2003 Broadcom Corporation.
+ *	Derived from proprietary unpublished source code,
+ *	Copyright (C) 2000-2003 Broadcom Corporation.
+ *
+ *	Permission is hereby granted for the distribution of this firmware
+ *	data in hexadecimal or equivalent format, provided this copyright
+ *	notice is accompanying it.
  */
 
 #include <linux/config.h>
@@ -61,8 +66,8 @@
 
 #define DRV_MODULE_NAME		"tg3"
 #define PFX DRV_MODULE_NAME	": "
-#define DRV_MODULE_VERSION	"3.29"
-#define DRV_MODULE_RELDATE	"May 23, 2005"
+#define DRV_MODULE_VERSION	"3.30"
+#define DRV_MODULE_RELDATE	"June 6, 2005"
 
 #define TG3_DEF_MAC_MODE	0
 #define TG3_DEF_RX_MODE		0
@@ -8555,6 +8560,16 @@ static void __devinit tg3_get_eeprom_hw_cfg(struct tg3 *tp)
 
 		case NIC_SRAM_DATA_CFG_LED_MODE_MAC:
 			tp->led_ctrl = LED_CTRL_MODE_MAC;
+
+			/* Default to PHY_1_MODE if 0 (MAC_MODE) is
+			 * read on some older 5700/5701 bootcode.
+			 */
+			if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
+			    ASIC_REV_5700 ||
+			    GET_ASIC_REV(tp->pci_chip_rev_id) ==
+			    ASIC_REV_5701)
+				tp->led_ctrl = LED_CTRL_MODE_PHY_1;
+
 			break;
 
 		case SHASTA_EXT_LED_SHARED:

drivers/pci/hotplug/cpci_hotplug_core.c

@@ -1,7 +1,7 @@
 /*
  * CompactPCI Hot Plug Driver
  *
- * Copyright (C) 2002 SOMA Networks, Inc.
+ * Copyright (C) 2002,2005 SOMA Networks, Inc.
  * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
  * Copyright (C) 2001 IBM Corp.
  *
@@ -45,10 +45,10 @@
 
 #define dbg(format, arg...)					\
 	do {							\
-		if(cpci_debug)					\
+		if (cpci_debug)					\
 			printk (KERN_DEBUG "%s: " format "\n",	\
 				MY_NAME , ## arg); 		\
-	} while(0)
+	} while (0)
 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg)
 #define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
@@ -111,10 +111,8 @@ enable_slot(struct hotplug_slot *hotplug_slot)
 
 	dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
 
-	if(controller->ops->set_power) {
+	if (controller->ops->set_power)
 		retval = controller->ops->set_power(slot, 1);
-	}
-
 	return retval;
 }
 
@@ -126,37 +124,41 @@ disable_slot(struct hotplug_slot *hotplug_slot)
 
 	dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
 
+	down_write(&list_rwsem);
+
 	/* Unconfigure device */
 	dbg("%s - unconfiguring slot %s",
 	    __FUNCTION__, slot->hotplug_slot->name);
-	if((retval = cpci_unconfigure_slot(slot))) {
+	if ((retval = cpci_unconfigure_slot(slot))) {
 		err("%s - could not unconfigure slot %s",
 		    __FUNCTION__, slot->hotplug_slot->name);
-		return retval;
+		goto disable_error;
 	}
 	dbg("%s - finished unconfiguring slot %s",
 	    __FUNCTION__, slot->hotplug_slot->name);
 
 	/* Clear EXT (by setting it) */
-	if(cpci_clear_ext(slot)) {
+	if (cpci_clear_ext(slot)) {
 		err("%s - could not clear EXT for slot %s",
 		    __FUNCTION__, slot->hotplug_slot->name);
 		retval = -ENODEV;
+		goto disable_error;
 	}
 	cpci_led_on(slot);
 
-	if(controller->ops->set_power) {
-		retval = controller->ops->set_power(slot, 0);
-	}
+	if (controller->ops->set_power)
+		if ((retval = controller->ops->set_power(slot, 0)))
+			goto disable_error;
 
-	if(update_adapter_status(slot->hotplug_slot, 0)) {
+	if (update_adapter_status(slot->hotplug_slot, 0))
 		warn("failure to update adapter file");
-	}
 
-	if(slot->extracting) {
+	if (slot->extracting) {
 		slot->extracting = 0;
 		atomic_dec(&extracting);
 	}
+disable_error:
+	up_write(&list_rwsem);
 	return retval;
 }
 
@@ -165,9 +167,8 @@ cpci_get_power_status(struct slot *slot)
 {
 	u8 power = 1;
 
-	if(controller->ops->get_power) {
+	if (controller->ops->get_power)
 		power = controller->ops->get_power(slot);
-	}
 	return power;
 }
 
@@ -237,9 +238,8 @@ cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last)
 	int status = -ENOMEM;
 	int i;
 
-	if(!(controller && bus)) {
+	if (!(controller && bus))
 		return -ENODEV;
-	}
 
 	/*
 	 * Create a structure for each slot, and register that slot
@@ -316,32 +316,30 @@ int
 cpci_hp_unregister_bus(struct pci_bus *bus)
 {
 	struct slot *slot;
-	struct list_head *tmp;
-	struct list_head *next;
-	int status;
+	struct slot *tmp;
+	int status = 0;
 
 	down_write(&list_rwsem);
-	if(!slots) {
+	if (!slots) {
 		up_write(&list_rwsem);
 		return -1;
 	}
-	list_for_each_safe(tmp, next, &slot_list) {
-		slot = list_entry(tmp, struct slot, slot_list);
-		if(slot->bus == bus) {
+	list_for_each_entry_safe(slot, tmp, &slot_list, slot_list) {
+		if (slot->bus == bus) {
+			list_del(&slot->slot_list);
+			slots--;
+
 			dbg("deregistering slot %s", slot->hotplug_slot->name);
 			status = pci_hp_deregister(slot->hotplug_slot);
-			if(status) {
+			if (status) {
 				err("pci_hp_deregister failed with error %d",
 				    status);
-				return status;
+				break;
 			}
-
-			list_del(&slot->slot_list);
-			slots--;
 		}
 	}
 	up_write(&list_rwsem);
-	return 0;
+	return status;
 }
 
 /* This is the interrupt mode interrupt handler */
@@ -351,7 +349,7 @@ cpci_hp_intr(int irq, void *data, struct pt_regs *regs)
 	dbg("entered cpci_hp_intr");
 
 	/* Check to see if it was our interrupt */
-	if((controller->irq_flags & SA_SHIRQ) &&
+	if ((controller->irq_flags & SA_SHIRQ) &&
 	    !controller->ops->check_irq(controller->dev_id)) {
 		dbg("exited cpci_hp_intr, not our interrupt");
 		return IRQ_NONE;
@@ -373,38 +371,30 @@ cpci_hp_intr(int irq, void *data, struct pt_regs *regs)
  * INS bits of the cold-inserted devices.
  */
 static int
-init_slots(void)
+init_slots(int clear_ins)
 {
 	struct slot *slot;
-	struct list_head *tmp;
 	struct pci_dev* dev;
 
 	dbg("%s - enter", __FUNCTION__);
 	down_read(&list_rwsem);
-	if(!slots) {
+	if (!slots) {
 		up_read(&list_rwsem);
 		return -1;
 	}
-	list_for_each(tmp, &slot_list) {
-		slot = list_entry(tmp, struct slot, slot_list);
+	list_for_each_entry(slot, &slot_list, slot_list) {
 		dbg("%s - looking at slot %s",
 		    __FUNCTION__, slot->hotplug_slot->name);
-		if(cpci_check_and_clear_ins(slot)) {
+		if (clear_ins && cpci_check_and_clear_ins(slot))
 			dbg("%s - cleared INS for slot %s",
 			    __FUNCTION__, slot->hotplug_slot->name);
-			dev = pci_find_slot(slot->bus->number, PCI_DEVFN(slot->number, 0));
-			if(dev) {
-				if(update_adapter_status(slot->hotplug_slot, 1)) {
-					warn("failure to update adapter file");
-				}
-				if(update_latch_status(slot->hotplug_slot, 1)) {
-					warn("failure to update latch file");
-				}
-				slot->dev = dev;
-			} else {
-				err("%s - no driver attached to device in slot %s",
-				    __FUNCTION__, slot->hotplug_slot->name);
-			}
+		dev = pci_get_slot(slot->bus, PCI_DEVFN(slot->number, 0));
+		if (dev) {
+			if (update_adapter_status(slot->hotplug_slot, 1))
+				warn("failure to update adapter file");
+			if (update_latch_status(slot->hotplug_slot, 1))
+				warn("failure to update latch file");
+			slot->dev = dev;
 		}
 	}
 	up_read(&list_rwsem);
@@ -416,26 +406,28 @@ static int
 check_slots(void)
 {
 	struct slot *slot;
-	struct list_head *tmp;
 	int extracted;
 	int inserted;
 	u16 hs_csr;
 
 	down_read(&list_rwsem);
-	if(!slots) {
+	if (!slots) {
 		up_read(&list_rwsem);
 		err("no slots registered, shutting down");
 		return -1;
 	}
 	extracted = inserted = 0;
-	list_for_each(tmp, &slot_list) {
-		slot = list_entry(tmp, struct slot, slot_list);
+	list_for_each_entry(slot, &slot_list, slot_list) {
 		dbg("%s - looking at slot %s",
 		    __FUNCTION__, slot->hotplug_slot->name);
-		if(cpci_check_and_clear_ins(slot)) {
-			/* Some broken hardware (e.g. PLX 9054AB) asserts ENUM# twice... */
-			if(slot->dev) {
-				warn("slot %s already inserted", slot->hotplug_slot->name);
+		if (cpci_check_and_clear_ins(slot)) {
+			/*
+			 * Some broken hardware (e.g. PLX 9054AB) asserts
+			 * ENUM# twice...
+			 */
+			if (slot->dev) {
+				warn("slot %s already inserted",
+				     slot->hotplug_slot->name);
 				inserted++;
 				continue;
 			}
@@ -452,7 +444,7 @@ check_slots(void)
 			/* Configure device */
 			dbg("%s - configuring slot %s",
 			    __FUNCTION__, slot->hotplug_slot->name);
-			if(cpci_configure_slot(slot)) {
+			if (cpci_configure_slot(slot)) {
 				err("%s - could not configure slot %s",
 				    __FUNCTION__, slot->hotplug_slot->name);
 				continue;
@@ -465,13 +457,11 @@ check_slots(void)
 			dbg("%s - slot %s HS_CSR (2) = %04x",
 			    __FUNCTION__, slot->hotplug_slot->name, hs_csr);
 
-			if(update_latch_status(slot->hotplug_slot, 1)) {
+			if (update_latch_status(slot->hotplug_slot, 1))
 				warn("failure to update latch file");
-			}
 
-			if(update_adapter_status(slot->hotplug_slot, 1)) {
+			if (update_adapter_status(slot->hotplug_slot, 1))
 				warn("failure to update adapter file");
-			}
 
 			cpci_led_off(slot);
 
@@ -481,7 +471,7 @@ check_slots(void)
 			    __FUNCTION__, slot->hotplug_slot->name, hs_csr);
 
 			inserted++;
-		} else if(cpci_check_ext(slot)) {
+		} else if (cpci_check_ext(slot)) {
 			/* Process extraction request */
 			dbg("%s - slot %s extracted",
 			    __FUNCTION__, slot->hotplug_slot->name);
@@ -491,27 +481,25 @@ check_slots(void)
 			dbg("%s - slot %s HS_CSR = %04x",
 			    __FUNCTION__, slot->hotplug_slot->name, hs_csr);
 
-			if(!slot->extracting) {
-				if(update_latch_status(slot->hotplug_slot, 0)) {
+			if (!slot->extracting) {
+				if (update_latch_status(slot->hotplug_slot, 0)) {
 					warn("failure to update latch file");
-
 				}
-				atomic_inc(&extracting);
 				slot->extracting = 1;
+				atomic_inc(&extracting);
 			}
 			extracted++;
-		} else if(slot->extracting) {
+		} else if (slot->extracting) {
 			hs_csr = cpci_get_hs_csr(slot);
-			if(hs_csr == 0xffff) {
+			if (hs_csr == 0xffff) {
 				/*
 				 * Hmmm, we're likely hosed at this point, should we
 				 * bother trying to tell the driver or not?
 				 */
 				err("card in slot %s was improperly removed",
 				    slot->hotplug_slot->name);
-				if(update_adapter_status(slot->hotplug_slot, 0)) {
+				if (update_adapter_status(slot->hotplug_slot, 0))
 					warn("failure to update adapter file");
-				}
 				slot->extracting = 0;
 				atomic_dec(&extracting);
 			}
@@ -520,10 +508,9 @@ check_slots(void)
 	up_read(&list_rwsem);
 	dbg("inserted=%d, extracted=%d, extracting=%d",
 	    inserted, extracted, atomic_read(&extracting));
-	if(inserted || extracted) {
+	if (inserted || extracted)
 		return extracted;
-	}
-	else if(!atomic_read(&extracting)) {
+	else if (!atomic_read(&extracting)) {
 		err("cannot find ENUM# source, shutting down");
 		return -1;
 	}
@@ -541,12 +528,12 @@ event_thread(void *data)
 	unlock_kernel();
 
 	dbg("%s - event thread started", __FUNCTION__);
-	while(1) {
+	while (1) {
 		dbg("event thread sleeping");
 		down_interruptible(&event_semaphore);
 		dbg("event thread woken, thread_finished = %d",
 		    thread_finished);
-		if(thread_finished || signal_pending(current))
+		if (thread_finished || signal_pending(current))
 			break;
 		do {
 			rc = check_slots();
@@ -558,7 +545,9 @@ event_thread(void *data)
 				thread_finished = 1;
 				break;
 			}
-		} while(atomic_read(&extracting) != 0);
+		} while (atomic_read(&extracting) && !thread_finished);
+		if (thread_finished)
+			break;
 
 		/* Re-enable ENUM# interrupt */
 		dbg("%s - re-enabling irq", __FUNCTION__);
@@ -579,21 +568,21 @@ poll_thread(void *data)
 	daemonize("cpci_hp_polld");
 	unlock_kernel();
 
-	while(1) {
-		if(thread_finished || signal_pending(current))
+	while (1) {
+		if (thread_finished || signal_pending(current))
 			break;
-		if(controller->ops->query_enum()) {
+		if (controller->ops->query_enum()) {
 			do {
 				rc = check_slots();
-				if(rc > 0) {
+				if (rc > 0) {
 					/* Give userspace a chance to handle extraction */
 					msleep(500);
-				} else if(rc < 0) {
+				} else if (rc < 0) {
 					dbg("%s - error checking slots", __FUNCTION__);
 					thread_finished = 1;
 					break;
 				}
-			} while(atomic_read(&extracting) != 0);
+			} while (atomic_read(&extracting) && !thread_finished);
 		}
 		msleep(100);
 	}
@@ -612,12 +601,11 @@ cpci_start_thread(void)
 	init_MUTEX_LOCKED(&thread_exit);
 	thread_finished = 0;
 
-	if(controller->irq) {
+	if (controller->irq)
 		pid = kernel_thread(event_thread, NULL, 0);
-	} else {
+	else
 		pid = kernel_thread(poll_thread, NULL, 0);
-	}
-	if(pid < 0) {
+	if (pid < 0) {
 		err("Can't start up our thread");
 		return -1;
 	}
@@ -630,9 +618,8 @@ cpci_stop_thread(void)
 {
 	thread_finished = 1;
 	dbg("thread finish command given");
-	if(controller->irq) {
+	if (controller->irq)
 		up(&event_semaphore);
-	}
 	dbg("wait for thread to exit");
 	down(&thread_exit);
 }
@@ -642,45 +629,67 @@ cpci_hp_register_controller(struct cpci_hp_controller *new_controller)
 {
 	int status = 0;
 
-	if(!controller) {
-		controller = new_controller;
-		if(controller->irq) {
-			if(request_irq(controller->irq,
-					cpci_hp_intr,
-					controller->irq_flags,
-					MY_NAME, controller->dev_id)) {
-				err("Can't get irq %d for the hotplug cPCI controller", controller->irq);
-				status = -ENODEV;
-			}
-			dbg("%s - acquired controller irq %d", __FUNCTION__,
-			    controller->irq);
+	if (controller)
+		return -1;
+	if (!(new_controller && new_controller->ops))
+		return -EINVAL;
+	if (new_controller->irq) {
+		if (!(new_controller->ops->enable_irq &&
+		     new_controller->ops->disable_irq))
+			status = -EINVAL;
+		if (request_irq(new_controller->irq,
+			       cpci_hp_intr,
+			       new_controller->irq_flags,
+			       MY_NAME,
+			       new_controller->dev_id)) {
+			err("Can't get irq %d for the hotplug cPCI controller",
+			    new_controller->irq);
+			status = -ENODEV;
 		}
-	} else {
-		err("cPCI hotplug controller already registered");
-		status = -1;
+		dbg("%s - acquired controller irq %d",
+		    __FUNCTION__, new_controller->irq);
 	}
+	if (!status)
+		controller = new_controller;
 	return status;
 }
 
+static void
+cleanup_slots(void)
+{
+	struct slot *slot;
+	struct slot *tmp;
+
+	/*
+	 * Unregister all of our slots with the pci_hotplug subsystem,
+	 * and free up all memory that we had allocated.
+	 */
+	down_write(&list_rwsem);
+	if (!slots)
+		goto cleanup_null;
+	list_for_each_entry_safe(slot, tmp, &slot_list, slot_list) {
+		list_del(&slot->slot_list);
+		pci_hp_deregister(slot->hotplug_slot);
+	}
+cleanup_null:
+	up_write(&list_rwsem);
+	return;
+}
+
 int
 cpci_hp_unregister_controller(struct cpci_hp_controller *old_controller)
 {
 	int status = 0;
 
-	if(controller) {
-		if(atomic_read(&extracting) != 0) {
-			return -EBUSY;
-		}
-		if(!thread_finished) {
+	if (controller) {
+		if (!thread_finished)
 			cpci_stop_thread();
-		}
-		if(controller->irq) {
+		if (controller->irq)
 			free_irq(controller->irq, controller->dev_id);
-		}
 		controller = NULL;
-	} else {
+		cleanup_slots();
+	} else
 		status = -ENODEV;
-	}
 	return status;
 }
 
@@ -691,32 +700,28 @@ cpci_hp_start(void)
 	int status;
 
 	dbg("%s - enter", __FUNCTION__);
-	if(!controller) {
+	if (!controller)
 		return -ENODEV;
-	}
 
 	down_read(&list_rwsem);
-	if(list_empty(&slot_list)) {
+	if (list_empty(&slot_list)) {
 		up_read(&list_rwsem);
 		return -ENODEV;
 	}
 	up_read(&list_rwsem);
 
-	if(first) {
-		status = init_slots();
-		if(status) {
-			return status;
-		}
+	status = init_slots(first);
+	if (first)
 		first = 0;
-	}
+	if (status)
+		return status;
 
 	status = cpci_start_thread();
-	if(status) {
+	if (status)
 		return status;
-	}
 	dbg("%s - thread started", __FUNCTION__);
 
-	if(controller->irq) {
+	if (controller->irq) {
 		/* Start enum interrupt processing */
 		dbg("%s - enabling irq", __FUNCTION__);
 		controller->ops->enable_irq();
@@ -728,13 +733,9 @@ cpci_hp_start(void)
 int
 cpci_hp_stop(void)
 {
-	if(!controller) {
+	if (!controller)
 		return -ENODEV;
-	}
-	if(atomic_read(&extracting) != 0) {
-		return -EBUSY;
-	}
-	if(controller->irq) {
+	if (controller->irq) {
 		/* Stop enum interrupt processing */
 		dbg("%s - disabling irq", __FUNCTION__);
 		controller->ops->disable_irq();
@@ -743,34 +744,6 @@ cpci_hp_stop(void)
 	return 0;
 }
 
-static void __exit
-cleanup_slots(void)
-{
-	struct list_head *tmp;
-	struct slot *slot;
-
-	/*
-	 * Unregister all of our slots with the pci_hotplug subsystem,
-	 * and free up all memory that we had allocated.
-	 */
-	down_write(&list_rwsem);
-	if(!slots) {
-		goto null_cleanup;
-	}
-	list_for_each(tmp, &slot_list) {
-		slot = list_entry(tmp, struct slot, slot_list);
-		list_del(&slot->slot_list);
-		pci_hp_deregister(slot->hotplug_slot);
-		kfree(slot->hotplug_slot->info);
-		kfree(slot->hotplug_slot->name);
-		kfree(slot->hotplug_slot);
-		kfree(slot);
-	}
-      null_cleanup:
-	up_write(&list_rwsem);
-	return;
-}
-
 int __init
 cpci_hotplug_init(int debug)
 {
@@ -784,7 +757,8 @@ cpci_hotplug_exit(void)
 	/*
 	 * Clean everything up.
 	 */
-	cleanup_slots();
+	cpci_hp_stop();
+	cpci_hp_unregister_controller(controller);
 }
 
 EXPORT_SYMBOL_GPL(cpci_hp_register_controller);

drivers/pci/hotplug/cpci_hotplug_pci.c

@@ -1,7 +1,7 @@
 /*
  * CompactPCI Hot Plug Driver PCI functions
  *
- * Copyright (C) 2002 by SOMA Networks, Inc.
+ * Copyright (C) 2002,2005 by SOMA Networks, Inc.
  *
  * All rights reserved.
  *
@@ -38,10 +38,10 @@ extern int cpci_debug;
 
 #define dbg(format, arg...)					\
 	do {							\
-		if(cpci_debug)					\
+		if (cpci_debug)					\
 			printk (KERN_DEBUG "%s: " format "\n",	\
 				MY_NAME , ## arg); 		\
-	} while(0)
+	} while (0)
 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg)
 #define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
@@ -57,16 +57,15 @@ u8 cpci_get_attention_status(struct slot* slot)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return 0;
-	}
 
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return 0;
-	}
+
 	return hs_csr & 0x0008 ? 1 : 0;
 }
 
@@ -78,27 +77,22 @@ int cpci_set_attention_status(struct slot* slot, int status)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return 0;
-	}
-
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return 0;
-	}
-	if(status) {
+	if (status)
 		hs_csr |= HS_CSR_LOO;
-	} else {
+	else
 		hs_csr &= ~HS_CSR_LOO;
-	}
-	if(pci_bus_write_config_word(slot->bus,
+	if (pci_bus_write_config_word(slot->bus,
 				      slot->devfn,
 				      hs_cap + 2,
-				      hs_csr)) {
+				      hs_csr))
 		return 0;
-	}
 	return 1;
 }
 
@@ -110,16 +104,13 @@ u16 cpci_get_hs_csr(struct slot* slot)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return 0xFFFF;
-	}
-
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return 0xFFFF;
-	}
 	return hs_csr;
 }
 
@@ -132,24 +123,22 @@ int cpci_check_and_clear_ins(struct slot* slot)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return 0;
-	}
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return 0;
-	}
-	if(hs_csr & HS_CSR_INS) {
+	if (hs_csr & HS_CSR_INS) {
 		/* Clear INS (by setting it) */
-		if(pci_bus_write_config_word(slot->bus,
+		if (pci_bus_write_config_word(slot->bus,
 					      slot->devfn,
 					      hs_cap + 2,
-					      hs_csr)) {
+					      hs_csr))
 			ins = 0;
-		}
-		ins = 1;
+		else
+			ins = 1;
 	}
 	return ins;
 }
@@ -163,18 +152,15 @@ int cpci_check_ext(struct slot* slot)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return 0;
-	}
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return 0;
-	}
-	if(hs_csr & HS_CSR_EXT) {
+	if (hs_csr & HS_CSR_EXT)
 		ext = 1;
-	}
 	return ext;
 }
 
@@ -186,23 +172,20 @@ int cpci_clear_ext(struct slot* slot)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return -ENODEV;
-	}
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return -ENODEV;
-	}
-	if(hs_csr & HS_CSR_EXT) {
+	if (hs_csr & HS_CSR_EXT) {
 		/* Clear EXT (by setting it) */
-		if(pci_bus_write_config_word(slot->bus,
+		if (pci_bus_write_config_word(slot->bus,
 					      slot->devfn,
 					      hs_cap + 2,
-					      hs_csr)) {
+					      hs_csr))
 			return -ENODEV;
-		}
 	}
 	return 0;
 }
@@ -215,18 +198,16 @@ int cpci_led_on(struct slot* slot)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return -ENODEV;
-	}
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return -ENODEV;
-	}
-	if((hs_csr & HS_CSR_LOO) != HS_CSR_LOO) {
+	if ((hs_csr & HS_CSR_LOO) != HS_CSR_LOO) {
 		hs_csr |= HS_CSR_LOO;
-		if(pci_bus_write_config_word(slot->bus,
+		if (pci_bus_write_config_word(slot->bus,
 					      slot->devfn,
 					      hs_cap + 2,
 					      hs_csr)) {
@@ -246,18 +227,16 @@ int cpci_led_off(struct slot* slot)
 	hs_cap = pci_bus_find_capability(slot->bus,
 					 slot->devfn,
 					 PCI_CAP_ID_CHSWP);
-	if(!hs_cap) {
+	if (!hs_cap)
 		return -ENODEV;
-	}
-	if(pci_bus_read_config_word(slot->bus,
+	if (pci_bus_read_config_word(slot->bus,
 				     slot->devfn,
 				     hs_cap + 2,
-				     &hs_csr)) {
+				     &hs_csr))
 		return -ENODEV;
-	}
-	if(hs_csr & HS_CSR_LOO) {
+	if (hs_csr & HS_CSR_LOO) {
 		hs_csr &= ~HS_CSR_LOO;
-		if(pci_bus_write_config_word(slot->bus,
+		if (pci_bus_write_config_word(slot->bus,
 					      slot->devfn,
 					      hs_cap + 2,
 					      hs_csr)) {
@@ -274,19 +253,6 @@ int cpci_led_off(struct slot* slot)
  * Device configuration functions
  */
 
-static void cpci_enable_device(struct pci_dev *dev)
-{
-	struct pci_bus *bus;
-
-	pci_enable_device(dev);
-	if(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
-		bus = dev->subordinate;
-		list_for_each_entry(dev, &bus->devices, bus_list) {
-			cpci_enable_device(dev);
-		}
-	}
-}
-
 int cpci_configure_slot(struct slot* slot)
 {
 	unsigned char busnr;
@@ -294,14 +260,14 @@ int cpci_configure_slot(struct slot* slot)
 
 	dbg("%s - enter", __FUNCTION__);
 
-	if(slot->dev == NULL) {
+	if (slot->dev == NULL) {
 		dbg("pci_dev null, finding %02x:%02x:%x",
 		    slot->bus->number, PCI_SLOT(slot->devfn), PCI_FUNC(slot->devfn));
-		slot->dev = pci_find_slot(slot->bus->number, slot->devfn);
+		slot->dev = pci_get_slot(slot->bus, slot->devfn);
 	}
 
 	/* Still NULL? Well then scan for it! */
-	if(slot->dev == NULL) {
+	if (slot->dev == NULL) {
 		int n;
 		dbg("pci_dev still null");
 
@@ -311,10 +277,10 @@ int cpci_configure_slot(struct slot* slot)
 		 */
 		n = pci_scan_slot(slot->bus, slot->devfn);
 		dbg("%s: pci_scan_slot returned %d", __FUNCTION__, n);
-		if(n > 0)
+		if (n > 0)
 			pci_bus_add_devices(slot->bus);
-		slot->dev = pci_find_slot(slot->bus->number, slot->devfn);
-		if(slot->dev == NULL) {
+		slot->dev = pci_get_slot(slot->bus, slot->devfn);
+		if (slot->dev == NULL) {
 			err("Could not find PCI device for slot %02x", slot->number);
 			return 1;
 		}
@@ -329,8 +295,6 @@ int cpci_configure_slot(struct slot* slot)
 
 	pci_bus_assign_resources(slot->dev->bus);
 
-	cpci_enable_device(slot->dev);
-
 	dbg("%s - exit", __FUNCTION__);
 	return 0;
 }
@@ -341,15 +305,15 @@ int cpci_unconfigure_slot(struct slot* slot)
 	struct pci_dev *dev;
 
 	dbg("%s - enter", __FUNCTION__);
-	if(!slot->dev) {
+	if (!slot->dev) {
 		err("No device for slot %02x\n", slot->number);
 		return -ENODEV;
 	}
 
 	for (i = 0; i < 8; i++) {
-		dev = pci_find_slot(slot->bus->number,
+		dev = pci_get_slot(slot->bus,
 				    PCI_DEVFN(PCI_SLOT(slot->devfn), i));
-		if(dev) {
+		if (dev) {
 			pci_remove_bus_device(dev);
 			slot->dev = NULL;
 		}

drivers/pci/hotplug/shpchprm_acpi.c

@@ -1626,7 +1626,7 @@ int shpchprm_set_hpp(
 	pci_bus->number = func->bus;
 	devfn = PCI_DEVFN(func->device, func->function);
 
-	ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->bus);
+	ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->slot_bus);
 
 	if (ab) {
 		if (ab->_hpp) {
@@ -1681,7 +1681,7 @@ void shpchprm_enable_card(
 		| PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
 	bcmd = bcommand  = bcommand | PCI_BRIDGE_CTL_NO_ISA;
 
-	ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->bus);
+	ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->slot_bus);
 	if (ab) {
 		if (ab->_hpp) {
 			if (ab->_hpp->enable_perr) {

drivers/pci/pci.ids

@@ -7173,6 +7173,7 @@
 	080f  Sentry5 DDR/SDR RAM Controller
 	0811  Sentry5 External Interface Core
 	0816  BCM3302 Sentry5 MIPS32 CPU
+	1600  NetXtreme BCM5752 Gigabit Ethernet PCI Express
 	1644  NetXtreme BCM5700 Gigabit Ethernet
 		1014 0277  Broadcom Vigil B5700 1000Base-T
 		1028 00d1  Broadcom BCM5700

drivers/pci/quirks.c

@@ -459,17 +459,6 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_APIC,
 #endif /* CONFIG_X86_IO_APIC */
 
 
-/*
- * Via 686A/B:  The PCI_INTERRUPT_LINE register for the on-chip
- * devices, USB0/1, AC97, MC97, and ACPI, has an unusual feature:
- * when written, it makes an internal connection to the PIC.
- * For these devices, this register is defined to be 4 bits wide.
- * Normally this is fine.  However for IO-APIC motherboards, or
- * non-x86 architectures (yes Via exists on PPC among other places),
- * we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
- * interrupts delivered properly.
- */
-
 /*
  * FIXME: it is questionable that quirk_via_acpi
  * is needed.  It shows up as an ISA bridge, and does not
@@ -492,28 +481,30 @@ static void __devinit quirk_via_acpi(struct pci_dev *d)
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C586_3,	quirk_via_acpi );
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_82C686_4,	quirk_via_acpi );
 
-static void quirk_via_irqpic(struct pci_dev *dev)
+/*
+ * Via 686A/B:  The PCI_INTERRUPT_LINE register for the on-chip
+ * devices, USB0/1, AC97, MC97, and ACPI, has an unusual feature:
+ * when written, it makes an internal connection to the PIC.
+ * For these devices, this register is defined to be 4 bits wide.
+ * Normally this is fine.  However for IO-APIC motherboards, or
+ * non-x86 architectures (yes Via exists on PPC among other places),
+ * we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
+ * interrupts delivered properly.
+ */
+static void quirk_via_irq(struct pci_dev *dev)
 {
 	u8 irq, new_irq;
 
-#ifdef CONFIG_X86_IO_APIC
-	if (nr_ioapics && !skip_ioapic_setup)
-		return;
-#endif
-#ifdef CONFIG_ACPI
-	if (acpi_irq_model != ACPI_IRQ_MODEL_PIC)
-		return;
-#endif
 	new_irq = dev->irq & 0xf;
 	pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
 	if (new_irq != irq) {
-		printk(KERN_INFO "PCI: Via PIC IRQ fixup for %s, from %d to %d\n",
+		printk(KERN_INFO "PCI: Via IRQ fixup for %s, from %d to %d\n",
 			pci_name(dev), irq, new_irq);
 		udelay(15);	/* unknown if delay really needed */
 		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
 	}
 }
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irqpic);
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irq);
 
 /*
  * PIIX3 USB: We have to disable USB interrupts that are

drivers/scsi/ata_piix.c

@@ -665,15 +665,6 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	return ata_pci_init_one(pdev, port_info, n_ports);
 }
 
-/**
- *	piix_init -
- *
- *	LOCKING:
- *
- *	RETURNS:
- *
- */
-
 static int __init piix_init(void)
 {
 	int rc;
@@ -689,13 +680,6 @@ static int __init piix_init(void)
 	return 0;
 }
 
-/**
- *	piix_exit -
- *
- *	LOCKING:
- *
- */
-
 static void __exit piix_exit(void)
 {
 	pci_unregister_driver(&piix_pci_driver);