Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (64 commits)
  PCI: make pci_bus a struct device
  PCI: fix codingstyle issues in include/linux/pci.h
  PCI: fix codingstyle issues in drivers/pci/pci.h
  PCI: PCIE ASPM support
  PCI: Fix fakephp deadlock
  PCI: modify SB700 SATA MSI quirk
  PCI: Run ACPI _OSC method on root bridges only
  PCI ACPI: AER driver should only register PCIe devices with _OSC
  PCI ACPI: Added a function to register _OSC with only PCIe devices.
  PCI: constify function pointer tables
  PCI: Convert drivers/pci/proc.c to use unlocked_ioctl
  pciehp: block new requests from the device before power off
  pciehp: workaround against Bad DLLP during power off
  pciehp: wait for 1000ms before LED operation after power off
  PCI: Remove pci_enable_device_bars() from documentation
  PCI: Remove pci_enable_device_bars()
  PCI: Remove users of pci_enable_device_bars()
  PCI: Add pci_enable_device_{io,mem} intefaces
  PCI: avoid save the same type of cap multiple times
  PCI: correctly initialize a structure for pcie_save_pcix_state()
  ...

Documentation/pci.txt

@@ -274,8 +274,6 @@ the PCI device by calling pci_enable_device(). This will:
 	o allocate an IRQ (if BIOS did not).
 
 NOTE: pci_enable_device() can fail! Check the return value.
-NOTE2: Also see pci_enable_device_bars() below. Drivers can
-    attempt to enable only a subset of BARs they need.
 
 [ OS BUG: we don't check resource allocations before enabling those
   resources. The sequence would make more sense if we called
@@ -605,40 +603,7 @@ device lists. This is still possible but discouraged.
 
 
 
-10. pci_enable_device_bars() and Legacy I/O Port space
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Large servers may not be able to provide I/O port resources to all PCI
-devices. I/O Port space is only 64KB on Intel Architecture[1] and is
-likely also fragmented since the I/O base register of PCI-to-PCI
-bridge will usually be aligned to a 4KB boundary[2]. On such systems,
-pci_enable_device() and pci_request_region() will fail when
-attempting to enable I/O Port regions that don't have I/O Port
-resources assigned.
-
-Fortunately, many PCI devices which request I/O Port resources also
-provide access to the same registers via MMIO BARs. These devices can
-be handled without using I/O port space and the drivers typically
-offer a CONFIG_ option to only use MMIO regions
-(e.g. CONFIG_TULIP_MMIO). PCI devices typically provide I/O port
-interface for legacy OSes and will work when I/O port resources are not
-assigned. The "PCI Local Bus Specification Revision 3.0" discusses
-this on p.44, "IMPLEMENTATION NOTE".
-
-If your PCI device driver doesn't need I/O port resources assigned to
-I/O Port BARs, you should use pci_enable_device_bars() instead of
-pci_enable_device() in order not to enable I/O port regions for the
-corresponding devices. In addition, you should use
-pci_request_selected_regions() and pci_release_selected_regions()
-instead of pci_request_regions()/pci_release_regions() in order not to
-request/release I/O port regions for the corresponding devices.
-
-[1] Some systems support 64KB I/O port space per PCI segment.
-[2] Some PCI-to-PCI bridges support optional 1KB aligned I/O base.
-
-
-
-11. MMIO Space and "Write Posting"
+10. MMIO Space and "Write Posting"
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Converting a driver from using I/O Port space to using MMIO space

arch/alpha/Kconfig

@@ -318,11 +318,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 config PCI_DOMAINS
 	bool
 	default y

arch/arm/Kconfig

@@ -577,11 +577,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 config PCI_SYSCALL
 	def_bool PCI
 

arch/frv/Kconfig

@@ -322,11 +322,6 @@ config PCI
 	  onboard. If you have one of these boards and you wish to use the PCI
 	  facilities, say Y here.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 config RESERVE_DMA_COHERENT
 	bool "Reserve DMA coherent memory"
 	depends on PCI && !MMU

arch/m32r/Kconfig

@@ -359,11 +359,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.linuxdoc.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 choice
 	prompt "PCI access mode"
 	depends on PCI

arch/m68k/Kconfig

@@ -145,11 +145,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 config MAC
 	bool "Macintosh support"
 	depends on !MMU_SUN3

arch/mips/Kconfig

@@ -1961,11 +1961,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
 	  say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 config PCI_DOMAINS
 	bool
 

arch/sh/drivers/pci/Kconfig

@@ -6,11 +6,6 @@ config PCI
 	  bus system, i.e. the way the CPU talks to the other stuff inside
 	  your box. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 config SH_PCIDMA_NONCOHERENT
 	bool "Cache and PCI noncoherent"
 	depends on PCI

arch/sparc64/Kconfig

@@ -351,11 +351,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 config PCI_DOMAINS
 	def_bool PCI
 

arch/x86/Kconfig

@@ -1369,11 +1369,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't.
-
 choice
 	prompt "PCI access mode"
 	depends on X86_32 && PCI && !X86_VISWS

arch/x86/kernel/quirks.c

@@ -30,8 +30,8 @@ static void __devinit quirk_intel_irqbalance(struct pci_dev *dev)
 	raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word);
 
 	if (!(word & (1 << 13))) {
-		printk(KERN_INFO "Intel E7520/7320/7525 detected. "
-			"Disabling irq balancing and affinity\n");
+		dev_info(&dev->dev, "Intel E7520/7320/7525 detected; "
+			"disabling irq balancing and affinity\n");
 #ifdef CONFIG_IRQBALANCE
 		irqbalance_disable("");
 #endif
@@ -104,14 +104,16 @@ static void ich_force_enable_hpet(struct pci_dev *dev)
 	pci_read_config_dword(dev, 0xF0, &rcba);
 	rcba &= 0xFFFFC000;
 	if (rcba == 0) {
-		printk(KERN_DEBUG "RCBA disabled. Cannot force enable HPET\n");
+		dev_printk(KERN_DEBUG, &dev->dev, "RCBA disabled; "
+			"cannot force enable HPET\n");
 		return;
 	}
 
 	/* use bits 31:14, 16 kB aligned */
 	rcba_base = ioremap_nocache(rcba, 0x4000);
 	if (rcba_base == NULL) {
-		printk(KERN_DEBUG "ioremap failed. Cannot force enable HPET\n");
+		dev_printk(KERN_DEBUG, &dev->dev, "ioremap failed; "
+			"cannot force enable HPET\n");
 		return;
 	}
 
@@ -122,8 +124,8 @@ static void ich_force_enable_hpet(struct pci_dev *dev)
 		/* HPET is enabled in HPTC. Just not reported by BIOS */
 		val = val & 0x3;
 		force_hpet_address = 0xFED00000 | (val << 12);
-		printk(KERN_DEBUG "Force enabled HPET at base address 0x%lx\n",
-			       force_hpet_address);
+		dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at "
+			"0x%lx\n", force_hpet_address);
 		iounmap(rcba_base);
 		return;
 	}
@@ -142,11 +144,12 @@ static void ich_force_enable_hpet(struct pci_dev *dev)
 	if (err) {
 		force_hpet_address = 0;
 		iounmap(rcba_base);
-		printk(KERN_DEBUG "Failed to force enable HPET\n");
+		dev_printk(KERN_DEBUG, &dev->dev,
+			"Failed to force enable HPET\n");
 	} else {
 		force_hpet_resume_type = ICH_FORCE_HPET_RESUME;
-		printk(KERN_DEBUG "Force enabled HPET at base address 0x%lx\n",
-			       force_hpet_address);
+		dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at "
+			"0x%lx\n", force_hpet_address);
 	}
 }
 
@@ -208,8 +211,8 @@ static void old_ich_force_enable_hpet(struct pci_dev *dev)
 	if (val & 0x4) {
 		val &= 0x3;
 		force_hpet_address = 0xFED00000 | (val << 12);
-		printk(KERN_DEBUG "HPET at base address 0x%lx\n",
-			       force_hpet_address);
+		dev_printk(KERN_DEBUG, &dev->dev, "HPET at 0x%lx\n",
+			force_hpet_address);
 		return;
 	}
 
@@ -229,14 +232,14 @@ static void old_ich_force_enable_hpet(struct pci_dev *dev)
 		/* HPET is enabled in HPTC. Just not reported by BIOS */
 		val &= 0x3;
 		force_hpet_address = 0xFED00000 | (val << 12);
-		printk(KERN_DEBUG "Force enabled HPET at base address 0x%lx\n",
-			       force_hpet_address);
+		dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at "
+			"0x%lx\n", force_hpet_address);
 		cached_dev = dev;
 		force_hpet_resume_type = OLD_ICH_FORCE_HPET_RESUME;
 		return;
 	}
 
-	printk(KERN_DEBUG "Failed to force enable HPET\n");
+	dev_printk(KERN_DEBUG, &dev->dev, "Failed to force enable HPET\n");
 }
 
 /*
@@ -294,8 +297,8 @@ static void vt8237_force_enable_hpet(struct pci_dev *dev)
 	 */
 	if (val & 0x80) {
 		force_hpet_address = (val & ~0x3ff);
-		printk(KERN_DEBUG "HPET at base address 0x%lx\n",
-			       force_hpet_address);
+		dev_printk(KERN_DEBUG, &dev->dev, "HPET at 0x%lx\n",
+			force_hpet_address);
 		return;
 	}
 
@@ -309,14 +312,14 @@ static void vt8237_force_enable_hpet(struct pci_dev *dev)
 	pci_read_config_dword(dev, 0x68, &val);
 	if (val & 0x80) {
 		force_hpet_address = (val & ~0x3ff);
-		printk(KERN_DEBUG "Force enabled HPET at base address 0x%lx\n",
-			       force_hpet_address);
+		dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at "
+			"0x%lx\n", force_hpet_address);
 		cached_dev = dev;
 		force_hpet_resume_type = VT8237_FORCE_HPET_RESUME;
 		return;
 	}
 
-	printk(KERN_DEBUG "Failed to force enable HPET\n");
+	dev_printk(KERN_DEBUG, &dev->dev, "Failed to force enable HPET\n");
 }
 
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235,
@@ -344,7 +347,7 @@ static void nvidia_force_enable_hpet(struct pci_dev *dev)
 	pci_read_config_dword(dev, 0x44, &val);
 	force_hpet_address = val & 0xfffffffe;
 	force_hpet_resume_type = NVIDIA_FORCE_HPET_RESUME;
-	printk(KERN_DEBUG "Force enabled HPET at base address 0x%lx\n",
+	dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at 0x%lx\n",
 		force_hpet_address);
 	cached_dev = dev;
 	return;

arch/x86/pci/fixup.c

@@ -17,7 +17,7 @@ static void __devinit pci_fixup_i450nx(struct pci_dev *d)
 	int pxb, reg;
 	u8 busno, suba, subb;
 
-	printk(KERN_WARNING "PCI: Searching for i450NX host bridges on %s\n", pci_name(d));
+	dev_warn(&d->dev, "Searching for i450NX host bridges\n");
 	reg = 0xd0;
 	for(pxb = 0; pxb < 2; pxb++) {
 		pci_read_config_byte(d, reg++, &busno);
@@ -41,7 +41,7 @@ static void __devinit pci_fixup_i450gx(struct pci_dev *d)
 	 */
 	u8 busno;
 	pci_read_config_byte(d, 0x4a, &busno);
-	printk(KERN_INFO "PCI: i440KX/GX host bridge %s: secondary bus %02x\n", pci_name(d), busno);
+	dev_info(&d->dev, "i440KX/GX host bridge; secondary bus %02x\n", busno);
 	pci_scan_bus_with_sysdata(busno);
 	pcibios_last_bus = -1;
 }
@@ -55,7 +55,7 @@ static void __devinit  pci_fixup_umc_ide(struct pci_dev *d)
 	 */
 	int i;
 
-	printk(KERN_WARNING "PCI: Fixing base address flags for device %s\n", pci_name(d));
+	dev_warn(&d->dev, "Fixing base address flags\n");
 	for(i = 0; i < 4; i++)
 		d->resource[i].flags |= PCI_BASE_ADDRESS_SPACE_IO;
 }
@@ -68,7 +68,7 @@ static void __devinit  pci_fixup_ncr53c810(struct pci_dev *d)
 	 * Fix class to be PCI_CLASS_STORAGE_SCSI
 	 */
 	if (!d->class) {
-		printk(KERN_WARNING "PCI: fixing NCR 53C810 class code for %s\n", pci_name(d));
+		dev_warn(&d->dev, "Fixing NCR 53C810 class code\n");
 		d->class = PCI_CLASS_STORAGE_SCSI << 8;
 	}
 }
@@ -80,7 +80,7 @@ static void __devinit  pci_fixup_latency(struct pci_dev *d)
 	 *  SiS 5597 and 5598 chipsets require latency timer set to
 	 *  at most 32 to avoid lockups.
 	 */
-	DBG("PCI: Setting max latency to 32\n");
+	dev_dbg(&d->dev, "Setting max latency to 32\n");
 	pcibios_max_latency = 32;
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, pci_fixup_latency);
@@ -138,7 +138,7 @@ static void pci_fixup_via_northbridge_bug(struct pci_dev *d)
 
 	pci_read_config_byte(d, where, &v);
 	if (v & ~mask) {
-		printk(KERN_WARNING "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \
+		dev_warn(&d->dev, "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \
 			d->device, d->revision, where, v, mask, v & mask);
 		v &= mask;
 		pci_write_config_byte(d, where, v);
@@ -200,7 +200,7 @@ static void pci_fixup_nforce2(struct pci_dev *dev)
 	 * Apply fixup if needed, but don't touch disconnect state
 	 */
 	if ((val & 0x00FF0000) != 0x00010000) {
-		printk(KERN_WARNING "PCI: nForce2 C1 Halt Disconnect fixup\n");
+		dev_warn(&dev->dev, "nForce2 C1 Halt Disconnect fixup\n");
 		pci_write_config_dword(dev, 0x6c, (val & 0xFF00FFFF) | 0x00010000);
 	}
 }
@@ -348,7 +348,7 @@ static void __devinit pci_fixup_video(struct pci_dev *pdev)
 	pci_read_config_word(pdev, PCI_COMMAND, &config);
 	if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
 		pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
-		printk(KERN_DEBUG "Boot video device is %s\n", pci_name(pdev));
+		dev_printk(KERN_DEBUG, &pdev->dev, "Boot video device\n");
 	}
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
@@ -388,11 +388,11 @@ static void __devinit pci_fixup_msi_k8t_onboard_sound(struct pci_dev *dev)
 		/* verify the change for status output */
 		pci_read_config_byte(dev, 0x50, &val);
 		if (val & 0x40)
-			printk(KERN_INFO "PCI: Detected MSI K8T Neo2-FIR, "
+			dev_info(&dev->dev, "Detected MSI K8T Neo2-FIR; "
 					"can't enable onboard soundcard!\n");
 		else
-			printk(KERN_INFO "PCI: Detected MSI K8T Neo2-FIR, "
-					"enabled onboard soundcard.\n");
+			dev_info(&dev->dev, "Detected MSI K8T Neo2-FIR; "
+					"enabled onboard soundcard\n");
 	}
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237,

arch/xtensa/Kconfig

@@ -174,11 +174,6 @@ config PCI
 	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 	  VESA. If you have PCI, say Y, otherwise N.
 
-	  The PCI-HOWTO, available from
-	  <http://www.linuxdoc.org/docs.html#howto>, contains valuable
-	  information about which PCI hardware does work under Linux and which
-	  doesn't
-
 source "drivers/pci/Kconfig"
 
 config HOTPLUG

drivers/ata/pata_cs5520.c

@@ -229,7 +229,7 @@ static int __devinit cs5520_init_one(struct pci_dev *pdev, const struct pci_devi
 		return -ENOMEM;
 
 	/* Perform set up for DMA */
-	if (pci_enable_device_bars(pdev, 1<<2)) {
+	if (pci_enable_device_io(pdev)) {
 		printk(KERN_ERR DRV_NAME ": unable to configure BAR2.\n");
 		return -ENODEV;
 	}

drivers/i2c/busses/scx200_acb.c

@@ -492,7 +492,7 @@ static __init int scx200_create_pci(const char *text, struct pci_dev *pdev,
 	iface->pdev = pdev;
 	iface->bar = bar;
 
-	rc = pci_enable_device_bars(iface->pdev, 1 << iface->bar);
+	rc = pci_enable_device_io(iface->pdev);
 	if (rc)
 		goto errout_free;
 

drivers/ide/pci/cs5520.c

@@ -156,8 +156,14 @@ static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_devic
 	ide_setup_pci_noise(dev, d);
 
 	/* We must not grab the entire device, it has 'ISA' space in its
-	   BARS too and we will freak out other bits of the kernel */
-	if (pci_enable_device_bars(dev, 1<<2)) {
+	 * BARS too and we will freak out other bits of the kernel
+	 *
+	 * pci_enable_device_bars() is going away. I replaced it with
+	 * IO only enable for now but I'll need confirmation this is
+	 * allright for that device. If not, it will need some kind of
+	 * quirk. --BenH.
+	 */
+	if (pci_enable_device_io(dev)) {
 		printk(KERN_WARNING "%s: Unable to enable 55x0.\n", d->name);
 		return -ENODEV;
 	}

drivers/ide/setup-pci.c

@@ -228,7 +228,9 @@ EXPORT_SYMBOL_GPL(ide_setup_pci_noise);
  *	@d: IDE port info
  *
  *	Enable the IDE PCI device. We attempt to enable the device in full
- *	but if that fails then we only need BAR4 so we will enable that.
+ *	but if that fails then we only need IO space. The PCI code should
+ *	have setup the proper resources for us already for controllers in
+ *	legacy mode.
  *	
  *	Returns zero on success or an error code
  */
@@ -238,7 +240,7 @@ static int ide_pci_enable(struct pci_dev *dev, const struct ide_port_info *d)
 	int ret;
 
 	if (pci_enable_device(dev)) {
-		ret = pci_enable_device_bars(dev, 1 << 4);
+		ret = pci_enable_device_io(dev);
 		if (ret < 0) {
 			printk(KERN_WARNING "%s: (ide_setup_pci_device:) "
 				"Could not enable device.\n", d->name);

drivers/pci/bus.c

@@ -108,6 +108,7 @@ int pci_bus_add_device(struct pci_dev *dev)
 void pci_bus_add_devices(struct pci_bus *bus)
 {
 	struct pci_dev *dev;
+	struct pci_bus *child_bus;
 	int retval;
 
 	list_for_each_entry(dev, &bus->devices, bus_list) {
@@ -138,11 +139,19 @@ void pci_bus_add_devices(struct pci_bus *bus)
 			       up_write(&pci_bus_sem);
 			}
 			pci_bus_add_devices(dev->subordinate);
-			retval = sysfs_create_link(&dev->subordinate->class_dev.kobj,
-						   &dev->dev.kobj, "bridge");
+
+			/* register the bus with sysfs as the parent is now
+			 * properly registered. */
+			child_bus = dev->subordinate;
+			child_bus->dev.parent = child_bus->bridge;
+			retval = device_register(&child_bus->dev);
+			if (!retval)
+				retval = device_create_file(&child_bus->dev,
+							&dev_attr_cpuaffinity);
 			if (retval)
-				dev_err(&dev->dev, "Error creating sysfs "
-					"bridge symlink, continuing...\n");
+				dev_err(&dev->dev, "Error registering pci_bus"
+					" device bridge symlink,"
+					" continuing...\n");
 		}
 	}
 }
@@ -204,7 +213,6 @@ void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
 	}
 	up_read(&pci_bus_sem);
 }
-EXPORT_SYMBOL_GPL(pci_walk_bus);
 
 EXPORT_SYMBOL(pci_bus_alloc_resource);
 EXPORT_SYMBOL_GPL(pci_bus_add_device);

drivers/pci/dmar.c

@@ -25,6 +25,7 @@
 
 #include <linux/pci.h>
 #include <linux/dmar.h>
+#include "iova.h"
 
 #undef PREFIX
 #define PREFIX "DMAR:"
@@ -263,8 +264,8 @@ parse_dmar_table(void)
 	if (!dmar)
 		return -ENODEV;
 
-	if (!dmar->width) {
-		printk (KERN_WARNING PREFIX "Zero: Invalid DMAR haw\n");
+	if (dmar->width < PAGE_SHIFT_4K - 1) {
+		printk(KERN_WARNING PREFIX "Invalid DMAR haw\n");
 		return -EINVAL;
 	}
 
@@ -301,11 +302,24 @@ parse_dmar_table(void)
 int __init dmar_table_init(void)
 {
 
-	parse_dmar_table();
+	int ret;
+
+	ret = parse_dmar_table();
+	if (ret) {
+		printk(KERN_INFO PREFIX "parse DMAR table failure.\n");
+		return ret;
+	}
+
 	if (list_empty(&dmar_drhd_units)) {
 		printk(KERN_INFO PREFIX "No DMAR devices found\n");
 		return -ENODEV;
 	}
+
+	if (list_empty(&dmar_rmrr_units)) {
+		printk(KERN_INFO PREFIX "No RMRR found\n");
+		return -ENODEV;
+	}
+
 	return 0;
 }
 

drivers/pci/hotplug/Kconfig

@@ -3,8 +3,8 @@
 #
 
 menuconfig HOTPLUG_PCI
-	tristate "Support for PCI Hotplug (EXPERIMENTAL)"
-	depends on PCI && EXPERIMENTAL && HOTPLUG
+	tristate "Support for PCI Hotplug"
+	depends on PCI && HOTPLUG
 	---help---
 	  Say Y here if you have a motherboard with a PCI Hotplug controller.
 	  This allows you to add and remove PCI cards while the machine is

drivers/pci/hotplug/Makefile

@@ -3,7 +3,6 @@
 #
 
 obj-$(CONFIG_HOTPLUG_PCI)		+= pci_hotplug.o
-obj-$(CONFIG_HOTPLUG_PCI_FAKE)		+= fakephp.o 
 obj-$(CONFIG_HOTPLUG_PCI_COMPAQ)	+= cpqphp.o
 obj-$(CONFIG_HOTPLUG_PCI_IBM)		+= ibmphp.o
 obj-$(CONFIG_HOTPLUG_PCI_ACPI)		+= acpiphp.o
@@ -16,6 +15,9 @@ obj-$(CONFIG_HOTPLUG_PCI_RPA)		+= rpaphp.o
 obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR)	+= rpadlpar_io.o
 obj-$(CONFIG_HOTPLUG_PCI_SGI)		+= sgi_hotplug.o
 
+# Link this last so it doesn't claim devices that have a real hotplug driver
+obj-$(CONFIG_HOTPLUG_PCI_FAKE)		+= fakephp.o
+
 pci_hotplug-objs	:=	pci_hotplug_core.o
 
 ifdef CONFIG_HOTPLUG_PCI_CPCI

drivers/pci/hotplug/acpiphp.h

@@ -113,7 +113,6 @@ struct acpiphp_slot {
 	u8		device;		/* pci device# */
 
 	u32		sun;		/* ACPI _SUN (slot unique number) */
-	u32		slotno;		/* slot number relative to bridge */
 	u32		flags;		/* see below */
 };
 

drivers/pci/hotplug/acpiphp_glue.c

@@ -102,7 +102,7 @@ static int is_ejectable(acpi_handle handle)
 }
 
 
-/* callback routine to check the existence of ejectable slots */
+/* callback routine to check for the existence of ejectable slots */
 static acpi_status
 is_ejectable_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
@@ -117,7 +117,7 @@ is_ejectable_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 	}
 }
 
-/* callback routine to check for the existance of a pci dock device */
+/* callback routine to check for the existence of a pci dock device */
 static acpi_status
 is_pci_dock_device(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
@@ -1528,7 +1528,6 @@ check_sub_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
 		acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
 		dbg("%s: re-enumerating slots under %s\n",
 			__FUNCTION__, objname);
-		acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
 		acpiphp_check_bridge(bridge);
 	}
 	return AE_OK ;

drivers/pci/hotplug/fakephp.c

@@ -39,6 +39,7 @@
 #include <linux/init.h>
 #include <linux/string.h>
 #include <linux/slab.h>
+#include <linux/workqueue.h>
 #include "../pci.h"
 
 #if !defined(MODULE)
@@ -63,10 +64,16 @@ struct dummy_slot {
 	struct list_head node;
 	struct hotplug_slot *slot;
 	struct pci_dev *dev;
+	struct work_struct remove_work;
+	unsigned long removed;
 };
 
 static int debug;
 static LIST_HEAD(slot_list);
+static struct workqueue_struct *dummyphp_wq;
+
+static void pci_rescan_worker(struct work_struct *work);
+static DECLARE_WORK(pci_rescan_work, pci_rescan_worker);
 
 static int enable_slot (struct hotplug_slot *slot);
 static int disable_slot (struct hotplug_slot *slot);
@@ -109,7 +116,7 @@ static int add_slot(struct pci_dev *dev)
 	slot->name = &dev->dev.bus_id[0];
 	dbg("slot->name = %s\n", slot->name);
 
-	dslot = kmalloc(sizeof(struct dummy_slot), GFP_KERNEL);
+	dslot = kzalloc(sizeof(struct dummy_slot), GFP_KERNEL);
 	if (!dslot)
 		goto error_info;
 
@@ -164,6 +171,14 @@ static void remove_slot(struct dummy_slot *dslot)
 		err("Problem unregistering a slot %s\n", dslot->slot->name);
 }
 
+/* called from the single-threaded workqueue handler to remove a slot */
+static void remove_slot_worker(struct work_struct *work)
+{
+	struct dummy_slot *dslot =
+		container_of(work, struct dummy_slot, remove_work);
+	remove_slot(dslot);
+}
+
 /**
  * pci_rescan_slot - Rescan slot
  * @temp: Device template. Should be set: bus and devfn.
@@ -267,11 +282,17 @@ static inline void pci_rescan(void) {
 	pci_rescan_buses(&pci_root_buses);
 }
 
+/* called from the single-threaded workqueue handler to rescan all pci buses */
+static void pci_rescan_worker(struct work_struct *work)
+{
+	pci_rescan();
+}
 
 static int enable_slot(struct hotplug_slot *hotplug_slot)
 {
 	/* mis-use enable_slot for rescanning of the pci bus */
-	pci_rescan();
+	cancel_work_sync(&pci_rescan_work);
+	queue_work(dummyphp_wq, &pci_rescan_work);
 	return -ENODEV;
 }
 
@@ -306,6 +327,10 @@ static int disable_slot(struct hotplug_slot *slot)
 		err("Can't remove PCI devices with other PCI devices behind it yet.\n");
 		return -ENODEV;
 	}
+	if (test_and_set_bit(0, &dslot->removed)) {
+		dbg("Slot already scheduled for removal\n");
+		return -ENODEV;
+	}
 	/* search for subfunctions and disable them first */
 	if (!(dslot->dev->devfn & 7)) {
 		for (func = 1; func < 8; func++) {
@@ -328,8 +353,9 @@ static int disable_slot(struct hotplug_slot *slot)
 	/* remove the device from the pci core */
 	pci_remove_bus_device(dslot->dev);
 
-	/* blow away this sysfs entry and other parts. */
-	remove_slot(dslot);
+	/* queue work item to blow away this sysfs entry and other parts. */
+	INIT_WORK(&dslot->remove_work, remove_slot_worker);
+	queue_work(dummyphp_wq, &dslot->remove_work);
 
 	return 0;
 }
@@ -340,6 +366,7 @@ static void cleanup_slots (void)
 	struct list_head *next;
 	struct dummy_slot *dslot;
 
+	destroy_workqueue(dummyphp_wq);
 	list_for_each_safe (tmp, next, &slot_list) {
 		dslot = list_entry (tmp, struct dummy_slot, node);
 		remove_slot(dslot);
@@ -351,6 +378,10 @@ static int __init dummyphp_init(void)
 {
 	info(DRIVER_DESC "\n");
 
+	dummyphp_wq = create_singlethread_workqueue(MY_NAME);
+	if (!dummyphp_wq)
+		return -ENOMEM;
+
 	return pci_scan_buses();
 }
 

drivers/pci/hotplug/ibmphp_core.c

@@ -761,10 +761,13 @@ static void ibm_unconfigure_device(struct pci_func *func)
 	debug("func->device << 3 | 0x0  = %x\n", func->device << 3 | 0x0);
 
 	for (j = 0; j < 0x08; j++) {
-		temp = pci_find_slot(func->busno, (func->device << 3) | j);
-		if (temp)
+		temp = pci_get_bus_and_slot(func->busno, (func->device << 3) | j);
+		if (temp) {
 			pci_remove_bus_device(temp);
+			pci_dev_put(temp);
+		}
 	}
+	pci_dev_put(func->dev);
 }
 
 /*
@@ -823,7 +826,7 @@ static int ibm_configure_device(struct pci_func *func)
 	if (!(bus_structure_fixup(func->busno)))
 		flag = 1;
 	if (func->dev == NULL)
-		func->dev = pci_find_slot(func->busno,
+		func->dev = pci_get_bus_and_slot(func->busno,
 				PCI_DEVFN(func->device, func->function));
 
 	if (func->dev == NULL) {
@@ -836,7 +839,7 @@ static int ibm_configure_device(struct pci_func *func)
 		if (num)
 			pci_bus_add_devices(bus);
 
-		func->dev = pci_find_slot(func->busno,
+		func->dev = pci_get_bus_and_slot(func->busno,
 				PCI_DEVFN(func->device, func->function));
 		if (func->dev == NULL) {
 			err("ERROR... : pci_dev still NULL\n");

drivers/pci/hotplug/pci_hotplug_core.c

@@ -137,7 +137,7 @@ static int get_##name (struct hotplug_slot *slot, type *value)		\
 	int retval = 0;							\
 	if (try_module_get(ops->owner)) {				\
 		if (ops->get_##name)					\
-			retval = ops->get_##name (slot, value);		\
+			retval = ops->get_##name(slot, value);		\
 		else							\
 			*value = slot->info->name;			\
 		module_put(ops->owner);					\
@@ -625,7 +625,7 @@ int pci_hp_register (struct hotplug_slot *slot)
 	if ((slot->info == NULL) || (slot->ops == NULL))
 		return -EINVAL;
 	if (slot->release == NULL) {
-		dbg("Why are you trying to register a hotplug slot"
+		dbg("Why are you trying to register a hotplug slot "
 		    "without a proper release function?\n");
 		return -EINVAL;
 	}

drivers/pci/hotplug/pciehp.h

@@ -82,24 +82,18 @@ struct event_info {
 };
 
 struct controller {
-	struct controller *next;
 	struct mutex crit_sect;		/* critical section mutex */
 	struct mutex ctrl_lock;		/* controller lock */
 	int num_slots;			/* Number of slots on ctlr */
 	int slot_num_inc;		/* 1 or -1 */
 	struct pci_dev *pci_dev;
 	struct list_head slot_list;
-	struct slot *slot;
 	struct hpc_ops *hpc_ops;
 	wait_queue_head_t queue;	/* sleep & wake process */
-	u8 bus;
-	u8 device;
-	u8 function;
 	u8 slot_device_offset;
 	u32 first_slot;		/* First physical slot number */  /* PCIE only has 1 slot */
 	u8 slot_bus;		/* Bus where the slots handled by this controller sit */
 	u8 ctrlcap;
-	u16 vendor_id;
 	u8 cap_base;
 	struct timer_list poll_timer;
 	volatile int cmd_busy;
@@ -161,6 +155,9 @@ extern int pciehp_configure_device(struct slot *p_slot);
 extern int pciehp_unconfigure_device(struct slot *p_slot);
 extern void pciehp_queue_pushbutton_work(struct work_struct *work);
 int pcie_init(struct controller *ctrl, struct pcie_device *dev);
+int pciehp_enable_slot(struct slot *p_slot);
+int pciehp_disable_slot(struct slot *p_slot);
+int pcie_init_hardware_part2(struct controller *ctrl, struct pcie_device *dev);
 
 static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device)
 {

drivers/pci/hotplug/pciehp_core.c

@@ -453,13 +453,9 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 
 	pci_set_drvdata(pdev, ctrl);
 
-	ctrl->bus = pdev->bus->number;  /* ctrl bus */
-	ctrl->slot_bus = pdev->subordinate->number;  /* bus controlled by this HPC */
-
-	ctrl->device = PCI_SLOT(pdev->devfn);
-	ctrl->function = PCI_FUNC(pdev->devfn);
-	dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", __FUNCTION__,
-		ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
+	dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n",
+	    __FUNCTION__, pdev->bus->number, PCI_SLOT(pdev->devfn),
+	    PCI_FUNC(pdev->devfn), pdev->irq);
 
 	/* Setup the slot information structures */
 	rc = init_slots(ctrl);
@@ -471,6 +467,11 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
 
 	t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
+	if (value) {
+		rc = pciehp_enable_slot(t_slot);
+		if (rc)	/* -ENODEV: shouldn't happen, but deal with it */
+			value = 0;
+	}
 	if ((POWER_CTRL(ctrl->ctrlcap)) && !value) {
 		rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
 		if (rc)
@@ -509,6 +510,24 @@ static int pciehp_suspend (struct pcie_device *dev, pm_message_t state)
 static int pciehp_resume (struct pcie_device *dev)
 {
 	printk("%s ENTRY\n", __FUNCTION__);
+	if (pciehp_force) {
+		struct pci_dev *pdev = dev->port;
+		struct controller *ctrl = pci_get_drvdata(pdev);
+		struct slot *t_slot;
+		u8 status;
+
+		/* reinitialize the chipset's event detection logic */
+		pcie_init_hardware_part2(ctrl, dev);
+
+		t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
+
+		/* Check if slot is occupied */
+		t_slot->hpc_ops->get_adapter_status(t_slot, &status);
+		if (status)
+			pciehp_enable_slot(t_slot);
+		else
+			pciehp_disable_slot(t_slot);
+	}
 	return 0;
 }
 #endif

drivers/pci/hotplug/pciehp_ctrl.c

@@ -37,8 +37,6 @@
 #include "pciehp.h"
 
 static void interrupt_event_handler(struct work_struct *work);
-static int pciehp_enable_slot(struct slot *p_slot);
-static int pciehp_disable_slot(struct slot *p_slot);
 
 static int queue_interrupt_event(struct slot *p_slot, u32 event_type)
 {
@@ -197,12 +195,6 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 			    __FUNCTION__);
 			return;
 		}
-		/*
-		 * After turning power off, we must wait for at least
-		 * 1 second before taking any action that relies on
-		 * power having been removed from the slot/adapter.
-		 */
-		msleep(1000);
 	}
 }
 
@@ -215,15 +207,12 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
  */
 static int board_added(struct slot *p_slot)
 {
-	u8 hp_slot;
 	int retval = 0;
 	struct controller *ctrl = p_slot->ctrl;
 
-	hp_slot = p_slot->device - ctrl->slot_device_offset;
-
 	dbg("%s: slot device, slot offset, hp slot = %d, %d ,%d\n",
 			__FUNCTION__, p_slot->device,
-			ctrl->slot_device_offset, hp_slot);
+			ctrl->slot_device_offset, p_slot->hp_slot);
 
 	if (POWER_CTRL(ctrl->ctrlcap)) {
 		/* Power on slot */
@@ -281,8 +270,6 @@ err_exit:
  */
 static int remove_board(struct slot *p_slot)
 {
-	u8 device;
-	u8 hp_slot;
 	int retval = 0;
 	struct controller *ctrl = p_slot->ctrl;
 
@@ -290,11 +277,7 @@ static int remove_board(struct slot *p_slot)
 	if (retval)
 		return retval;
 
-	device = p_slot->device;
-	hp_slot = p_slot->device - ctrl->slot_device_offset;
-	p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
-
-	dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
+	dbg("In %s, hp_slot = %d\n", __FUNCTION__, p_slot->hp_slot);
 
 	if (POWER_CTRL(ctrl->ctrlcap)) {
 		/* power off slot */
@@ -621,12 +604,6 @@ int pciehp_disable_slot(struct slot *p_slot)
 			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return -EINVAL;
 		}
-		/*
-		 * After turning power off, we must wait for at least
-		 * 1 second before taking any action that relies on
-		 * power having been removed from the slot/adapter.
-		 */
-		msleep(1000);
 	}
 
 	ret = remove_board(p_slot);

drivers/pci/hotplug/pciehp_hpc.c

@@ -636,15 +636,57 @@ static int hpc_power_on_slot(struct slot * slot)
 	return retval;
 }
 
+static inline int pcie_mask_bad_dllp(struct controller *ctrl)
+{
+	struct pci_dev *dev = ctrl->pci_dev;
+	int pos;
+	u32 reg;
+
+	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
+	if (!pos)
+		return 0;
+	pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, &reg);
+	if (reg & PCI_ERR_COR_BAD_DLLP)
+		return 0;
+	reg |= PCI_ERR_COR_BAD_DLLP;
+	pci_write_config_dword(dev, pos + PCI_ERR_COR_MASK, reg);
+	return 1;
+}
+
+static inline void pcie_unmask_bad_dllp(struct controller *ctrl)
+{
+	struct pci_dev *dev = ctrl->pci_dev;
+	u32 reg;
+	int pos;
+
+	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
+	if (!pos)
+		return;
+	pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, &reg);
+	if (!(reg & PCI_ERR_COR_BAD_DLLP))
+		return;
+	reg &= ~PCI_ERR_COR_BAD_DLLP;
+	pci_write_config_dword(dev, pos + PCI_ERR_COR_MASK, reg);
+}
+
 static int hpc_power_off_slot(struct slot * slot)
 {
 	struct controller *ctrl = slot->ctrl;
 	u16 slot_cmd;
 	u16 cmd_mask;
 	int retval = 0;
+	int changed;
 
 	dbg("%s: slot->hp_slot %x\n", __FUNCTION__, slot->hp_slot);
 
+	/*
+	 * Set Bad DLLP Mask bit in Correctable Error Mask
+	 * Register. This is the workaround against Bad DLLP error
+	 * that sometimes happens during turning power off the slot
+	 * which conforms to PCI Express 1.0a spec.
+	 */
+	changed = pcie_mask_bad_dllp(ctrl);
+
 	slot_cmd = POWER_OFF;
 	cmd_mask = PWR_CTRL;
 	/*
@@ -674,6 +716,16 @@ static int hpc_power_off_slot(struct slot * slot)
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
 
+	/*
+	 * After turning power off, we must wait for at least 1 second
+	 * before taking any action that relies on power having been
+	 * removed from the slot/adapter.
+	 */
+	msleep(1000);
+
+	if (changed)
+		pcie_unmask_bad_dllp(ctrl);
+
 	return retval;
 }
 
@@ -1067,13 +1119,143 @@ int pciehp_acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev)
 }
 #endif
 
-int pcie_init(struct controller * ctrl, struct pcie_device *dev)
+static int pcie_init_hardware_part1(struct controller *ctrl,
+				    struct pcie_device *dev)
+{
+	int rc;
+	u16 temp_word;
+	u32 slot_cap;
+	u16 slot_status;
+
+	rc = pciehp_readl(ctrl, SLOTCAP, &slot_cap);
+	if (rc) {
+		err("%s: Cannot read SLOTCAP register\n", __FUNCTION__);
+		return -1;
+	}
+
+	/* Mask Hot-plug Interrupt Enable */
+	rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
+	if (rc) {
+		err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
+		return -1;
+	}
+
+	dbg("%s: SLOTCTRL %x value read %x\n",
+	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, temp_word);
+	temp_word = (temp_word & ~HP_INTR_ENABLE & ~CMD_CMPL_INTR_ENABLE) |
+		0x00;
+
+	rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
+	if (rc) {
+		err("%s: Cannot write to SLOTCTRL register\n", __FUNCTION__);
+		return -1;
+	}
+
+	rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+	if (rc) {
+		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
+		return -1;
+	}
+
+	temp_word = 0x1F; /* Clear all events */
+	rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
+	if (rc) {
+		err("%s: Cannot write to SLOTSTATUS register\n", __FUNCTION__);
+		return -1;
+	}
+	return 0;
+}
+
+int pcie_init_hardware_part2(struct controller *ctrl, struct pcie_device *dev)
 {
 	int rc;
 	u16 temp_word;
-	u16 cap_reg;
 	u16 intr_enable = 0;
 	u32 slot_cap;
+	u16 slot_status;
+
+	rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
+	if (rc) {
+		err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
+		goto abort;
+	}
+
+	intr_enable = intr_enable | PRSN_DETECT_ENABLE;
+
+	rc = pciehp_readl(ctrl, SLOTCAP, &slot_cap);
+	if (rc) {
+		err("%s: Cannot read SLOTCAP register\n", __FUNCTION__);
+		goto abort;
+	}
+
+	if (ATTN_BUTTN(slot_cap))
+		intr_enable = intr_enable | ATTN_BUTTN_ENABLE;
+
+	if (POWER_CTRL(slot_cap))
+		intr_enable = intr_enable | PWR_FAULT_DETECT_ENABLE;
+
+	if (MRL_SENS(slot_cap))
+		intr_enable = intr_enable | MRL_DETECT_ENABLE;
+
+	temp_word = (temp_word & ~intr_enable) | intr_enable;
+
+	if (pciehp_poll_mode) {
+		temp_word = (temp_word & ~HP_INTR_ENABLE) | 0x0;
+	} else {
+		temp_word = (temp_word & ~HP_INTR_ENABLE) | HP_INTR_ENABLE;
+	}
+
+	/*
+	 * Unmask Hot-plug Interrupt Enable for the interrupt
+	 * notification mechanism case.
+	 */
+	rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
+	if (rc) {
+		err("%s: Cannot write to SLOTCTRL register\n", __FUNCTION__);
+		goto abort;
+	}
+	rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
+	if (rc) {
+		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
+		goto abort_disable_intr;
+	}
+
+	temp_word =  0x1F; /* Clear all events */
+	rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
+	if (rc) {
+		err("%s: Cannot write to SLOTSTATUS register\n", __FUNCTION__);
+		goto abort_disable_intr;
+	}
+
+	if (pciehp_force) {
+		dbg("Bypassing BIOS check for pciehp use on %s\n",
+				pci_name(ctrl->pci_dev));
+	} else {
+		rc = pciehp_get_hp_hw_control_from_firmware(ctrl->pci_dev);
+		if (rc)
+			goto abort_disable_intr;
+	}
+
+	return 0;
+
+	/* We end up here for the many possible ways to fail this API. */
+abort_disable_intr:
+	rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
+	if (!rc) {
+		temp_word &= ~(intr_enable | HP_INTR_ENABLE);
+		rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
+	}
+	if (rc)
+		err("%s : disabling interrupts failed\n", __FUNCTION__);
+abort:
+	return -1;
+}
+
+int pcie_init(struct controller *ctrl, struct pcie_device *dev)
+{
+	int rc;
+	u16 cap_reg;
+	u32 slot_cap;
 	int cap_base;
 	u16 slot_status, slot_ctrl;
 	struct pci_dev *pdev;
@@ -1084,9 +1266,10 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	dbg("%s: hotplug controller vendor id 0x%x device id 0x%x\n",
 			__FUNCTION__, pdev->vendor, pdev->device);
 
-	if ((cap_base = pci_find_capability(pdev, PCI_CAP_ID_EXP)) == 0) {
+	cap_base = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	if (cap_base == 0) {
 		dbg("%s: Can't find PCI_CAP_ID_EXP (0x10)\n", __FUNCTION__);
-		goto abort_free_ctlr;
+		goto abort;
 	}
 
 	ctrl->cap_base = cap_base;
@@ -1096,7 +1279,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	rc = pciehp_readw(ctrl, CAPREG, &cap_reg);
 	if (rc) {
 		err("%s: Cannot read CAPREG register\n", __FUNCTION__);
-		goto abort_free_ctlr;
+		goto abort;
 	}
 	dbg("%s: CAPREG offset %x cap_reg %x\n",
 	    __FUNCTION__, ctrl->cap_base + CAPREG, cap_reg);
@@ -1106,26 +1289,26 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 		&& ((cap_reg & DEV_PORT_TYPE) != 0x0060))) {
 		dbg("%s : This is not a root port or the port is not "
 		    "connected to a slot\n", __FUNCTION__);
-		goto abort_free_ctlr;
+		goto abort;
 	}
 
 	rc = pciehp_readl(ctrl, SLOTCAP, &slot_cap);
 	if (rc) {
 		err("%s: Cannot read SLOTCAP register\n", __FUNCTION__);
-		goto abort_free_ctlr;
+		goto abort;
 	}
 	dbg("%s: SLOTCAP offset %x slot_cap %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCAP, slot_cap);
 
 	if (!(slot_cap & HP_CAP)) {
 		dbg("%s : This slot is not hot-plug capable\n", __FUNCTION__);
-		goto abort_free_ctlr;
+		goto abort;
 	}
 	/* For debugging purpose */
 	rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
 	if (rc) {
 		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
-		goto abort_free_ctlr;
+		goto abort;
 	}
 	dbg("%s: SLOTSTATUS offset %x slot_status %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTSTATUS, slot_status);
@@ -1133,7 +1316,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	rc = pciehp_readw(ctrl, SLOTCTRL, &slot_ctrl);
 	if (rc) {
 		err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
-		goto abort_free_ctlr;
+		goto abort;
 	}
 	dbg("%s: SLOTCTRL offset %x slot_ctrl %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_ctrl);
@@ -1161,36 +1344,9 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 	ctrl->first_slot = slot_cap >> 19;
 	ctrl->ctrlcap = slot_cap & 0x0000007f;
 
-	/* Mask Hot-plug Interrupt Enable */
-	rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
-	if (rc) {
-		err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
-		goto abort_free_ctlr;
-	}
-
-	dbg("%s: SLOTCTRL %x value read %x\n",
-	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, temp_word);
-	temp_word = (temp_word & ~HP_INTR_ENABLE & ~CMD_CMPL_INTR_ENABLE) |
-		0x00;
-
-	rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
-	if (rc) {
-		err("%s: Cannot write to SLOTCTRL register\n", __FUNCTION__);
-		goto abort_free_ctlr;
-	}
-
-	rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
-	if (rc) {
-		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
-		goto abort_free_ctlr;
-	}
-
-	temp_word = 0x1F; /* Clear all events */
-	rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
-	if (rc) {
-		err("%s: Cannot write to SLOTSTATUS register\n", __FUNCTION__);
-		goto abort_free_ctlr;
-	}
+	rc = pcie_init_hardware_part1(ctrl, dev);
+	if (rc)
+		goto abort;
 
 	if (pciehp_poll_mode) {
 		/* Install interrupt polling timer. Start with 10 sec delay */
@@ -1206,7 +1362,7 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 		if (rc) {
 			err("Can't get irq %d for the hotplug controller\n",
 			    ctrl->pci_dev->irq);
-			goto abort_free_ctlr;
+			goto abort;
 		}
 	}
 	dbg("pciehp ctrl b:d:f:irq=0x%x:%x:%x:%x\n", pdev->bus->number,
@@ -1224,82 +1380,16 @@ int pcie_init(struct controller * ctrl, struct pcie_device *dev)
 		}
 	}
 
-	rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
-	if (rc) {
-		err("%s: Cannot read SLOTCTRL register\n", __FUNCTION__);
-		goto abort_free_irq;
+	rc = pcie_init_hardware_part2(ctrl, dev);
+	if (rc == 0) {
+		ctrl->hpc_ops = &pciehp_hpc_ops;
+		return 0;
 	}
-
-	intr_enable = intr_enable | PRSN_DETECT_ENABLE;
-
-	if (ATTN_BUTTN(slot_cap))
-		intr_enable = intr_enable | ATTN_BUTTN_ENABLE;
-
-	if (POWER_CTRL(slot_cap))
-		intr_enable = intr_enable | PWR_FAULT_DETECT_ENABLE;
-
-	if (MRL_SENS(slot_cap))
-		intr_enable = intr_enable | MRL_DETECT_ENABLE;
-
-	temp_word = (temp_word & ~intr_enable) | intr_enable;
-
-	if (pciehp_poll_mode) {
-		temp_word = (temp_word & ~HP_INTR_ENABLE) | 0x0;
-	} else {
-		temp_word = (temp_word & ~HP_INTR_ENABLE) | HP_INTR_ENABLE;
-	}
-
-	/*
-	 * Unmask Hot-plug Interrupt Enable for the interrupt
-	 * notification mechanism case.
-	 */
-	rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
-	if (rc) {
-		err("%s: Cannot write to SLOTCTRL register\n", __FUNCTION__);
-		goto abort_free_irq;
-	}
-	rc = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
-	if (rc) {
-		err("%s: Cannot read SLOTSTATUS register\n", __FUNCTION__);
-		goto abort_disable_intr;
-	}
-
-	temp_word =  0x1F; /* Clear all events */
-	rc = pciehp_writew(ctrl, SLOTSTATUS, temp_word);
-	if (rc) {
-		err("%s: Cannot write to SLOTSTATUS register\n", __FUNCTION__);
-		goto abort_disable_intr;
-	}
-
-	if (pciehp_force) {
-		dbg("Bypassing BIOS check for pciehp use on %s\n",
-				pci_name(ctrl->pci_dev));
-	} else {
-		rc = pciehp_get_hp_hw_control_from_firmware(ctrl->pci_dev);
-		if (rc)
-			goto abort_disable_intr;
-	}
-
-	ctrl->hpc_ops = &pciehp_hpc_ops;
-
-	return 0;
-
-	/* We end up here for the many possible ways to fail this API. */
-abort_disable_intr:
-	rc = pciehp_readw(ctrl, SLOTCTRL, &temp_word);
-	if (!rc) {
-		temp_word &= ~(intr_enable | HP_INTR_ENABLE);
-		rc = pciehp_writew(ctrl, SLOTCTRL, temp_word);
-	}
-	if (rc)
-		err("%s : disabling interrupts failed\n", __FUNCTION__);
-
 abort_free_irq:
 	if (pciehp_poll_mode)
 		del_timer_sync(&ctrl->poll_timer);
 	else
 		free_irq(ctrl->pci_dev->irq, ctrl);
-
-abort_free_ctlr:
+abort:
 	return -1;
 }

drivers/pci/hotplug/pciehp_pci.c

@@ -105,12 +105,7 @@ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
 	}
 
 	/* Find Advanced Error Reporting Enhanced Capability */
-	pos = 256;
-	do {
-		pci_read_config_dword(dev, pos, &reg32);
-		if (PCI_EXT_CAP_ID(reg32) == PCI_EXT_CAP_ID_ERR)
-			break;
-	} while ((pos = PCI_EXT_CAP_NEXT(reg32)));
+	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
 	if (!pos)
 		return;
 
@@ -248,11 +243,15 @@ int pciehp_unconfigure_device(struct slot *p_slot)
 	u8 bctl = 0;
 	u8 presence = 0;
 	struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
+	u16 command;
 
 	dbg("%s: bus/dev = %x/%x\n", __FUNCTION__, p_slot->bus,
 				p_slot->device);
+	ret = p_slot->hpc_ops->get_adapter_status(p_slot, &presence);
+	if (ret)
+		presence = 0;
 
-	for (j=0; j<8 ; j++) {
+	for (j = 0; j < 8; j++) {
 		struct pci_dev* temp = pci_get_slot(parent,
 				(p_slot->device << 3) | j);
 		if (!temp)
@@ -263,21 +262,26 @@ int pciehp_unconfigure_device(struct slot *p_slot)
 			pci_dev_put(temp);
 			continue;
 		}
-		if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
-			ret = p_slot->hpc_ops->get_adapter_status(p_slot,
-								&presence);
-			if (!ret && presence) {
-				pci_read_config_byte(temp, PCI_BRIDGE_CONTROL,
-					&bctl);
-				if (bctl & PCI_BRIDGE_CTL_VGA) {
-					err("Cannot remove display device %s\n",
-						pci_name(temp));
-					pci_dev_put(temp);
-					continue;
-				}
+		if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE && presence) {
+			pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
+			if (bctl & PCI_BRIDGE_CTL_VGA) {
+				err("Cannot remove display device %s\n",
+				    pci_name(temp));
+				pci_dev_put(temp);
+				continue;
 			}
 		}
 		pci_remove_bus_device(temp);
+		/*
+		 * Ensure that no new Requests will be generated from
+		 * the device.
+		 */
+		if (presence) {
+			pci_read_config_word(temp, PCI_COMMAND, &command);
+			command &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_SERR);
+			command |= PCI_COMMAND_INTX_DISABLE;
+			pci_write_config_word(temp, PCI_COMMAND, command);
+		}
 		pci_dev_put(temp);
 	}
 	/*
@@ -288,4 +292,3 @@ int pciehp_unconfigure_device(struct slot *p_slot)
 
 	return rc;
 }
-

drivers/pci/hotplug/rpaphp.h

@@ -74,7 +74,6 @@ struct slot {
 	u32 type;
 	u32 power_domain;
 	char *name;
-	char *location;
 	struct device_node *dn;
 	struct pci_bus *bus;
 	struct list_head *pci_devs;

drivers/pci/hotplug/rpaphp_pci.c

@@ -64,19 +64,6 @@ int rpaphp_get_sensor_state(struct slot *slot, int *state)
 	return rc;
 }
 
-static void set_slot_name(struct slot *slot)
-{
-	struct pci_bus *bus = slot->bus;
-	struct pci_dev *bridge;
-
-	bridge = bus->self;
-	if (bridge)
-		strcpy(slot->name, pci_name(bridge));
-	else
-		sprintf(slot->name, "%04x:%02x:00.0", pci_domain_nr(bus),
-			bus->number);
-}
-
 /**
  * rpaphp_enable_slot - record slot state, config pci device
  * @slot: target &slot
@@ -115,7 +102,6 @@ int rpaphp_enable_slot(struct slot *slot)
 	info->adapter_status = EMPTY;
 	slot->bus = bus;
 	slot->pci_devs = &bus->devices;
-	set_slot_name(slot);
 
 	/* if there's an adapter in the slot, go add the pci devices */
 	if (state == PRESENT) {

drivers/pci/hotplug/rpaphp_slot.c

@@ -33,23 +33,31 @@
 #include <asm/rtas.h>
 #include "rpaphp.h"
 
-static ssize_t location_read_file (struct hotplug_slot *php_slot, char *buf)
+static ssize_t address_read_file (struct hotplug_slot *php_slot, char *buf)
 {
-	char *value;
-	int retval = -ENOENT;
+	int retval;
 	struct slot *slot = (struct slot *)php_slot->private;
+	struct pci_bus *bus;
 
 	if (!slot)
-		return retval;
+		return -ENOENT;
+
+	bus = slot->bus;
+	if (!bus)
+		return -ENOENT;
+
+	if (bus->self)
+		retval = sprintf(buf, pci_name(bus->self));
+	else
+		retval = sprintf(buf, "%04x:%02x:00.0",
+		        pci_domain_nr(bus), bus->number);
 
-	value = slot->location;
-	retval = sprintf (buf, "%s\n", value);
 	return retval;
 }
 
-static struct hotplug_slot_attribute php_attr_location = {
-	.attr = {.name = "phy_location", .mode = S_IFREG | S_IRUGO},
-	.show = location_read_file,
+static struct hotplug_slot_attribute php_attr_address = {
+	.attr = {.name = "address", .mode = S_IFREG | S_IRUGO},
+	.show = address_read_file,
 };
 
 /* free up the memory used by a slot */
@@ -64,7 +72,6 @@ void dealloc_slot_struct(struct slot *slot)
 	kfree(slot->hotplug_slot->info);
 	kfree(slot->hotplug_slot->name);
 	kfree(slot->hotplug_slot);
-	kfree(slot->location);
 	kfree(slot);
 }
 
@@ -83,16 +90,13 @@ struct slot *alloc_slot_struct(struct device_node *dn,
 					   GFP_KERNEL);
 	if (!slot->hotplug_slot->info)
 		goto error_hpslot;
-	slot->hotplug_slot->name = kmalloc(BUS_ID_SIZE + 1, GFP_KERNEL);
+	slot->hotplug_slot->name = kmalloc(strlen(drc_name) + 1, GFP_KERNEL);
 	if (!slot->hotplug_slot->name)
 		goto error_info;	
-	slot->location = kmalloc(strlen(drc_name) + 1, GFP_KERNEL);
-	if (!slot->location)
-		goto error_name;
 	slot->name = slot->hotplug_slot->name;
+	strcpy(slot->name, drc_name);
 	slot->dn = dn;
 	slot->index = drc_index;
-	strcpy(slot->location, drc_name);
 	slot->power_domain = power_domain;
 	slot->hotplug_slot->private = slot;
 	slot->hotplug_slot->ops = &rpaphp_hotplug_slot_ops;
@@ -100,8 +104,6 @@ struct slot *alloc_slot_struct(struct device_node *dn,
 	
 	return (slot);
 
-error_name:
-	kfree(slot->hotplug_slot->name);
 error_info:
 	kfree(slot->hotplug_slot->info);
 error_hpslot:
@@ -133,8 +135,8 @@ int rpaphp_deregister_slot(struct slot *slot)
 
 	list_del(&slot->rpaphp_slot_list);
 	
-	/* remove "phy_location" file */
-	sysfs_remove_file(&php_slot->kobj, &php_attr_location.attr);
+	/* remove "address" file */
+	sysfs_remove_file(&php_slot->kobj, &php_attr_address.attr);
 
 	retval = pci_hp_deregister(php_slot);
 	if (retval)
@@ -166,8 +168,8 @@ int rpaphp_register_slot(struct slot *slot)
 		return retval;
 	}
 
-	/* create "phy_location" file */
-	retval = sysfs_create_file(&php_slot->kobj, &php_attr_location.attr);
+	/* create "address" file */
+	retval = sysfs_create_file(&php_slot->kobj, &php_attr_address.attr);
 	if (retval) {
 		err("sysfs_create_file failed with error %d\n", retval);
 		goto sysfs_fail;
@@ -175,8 +177,7 @@ int rpaphp_register_slot(struct slot *slot)
 
 	/* add slot to our internal list */
 	list_add(&slot->rpaphp_slot_list, &rpaphp_slot_head);
-	info("Slot [%s](PCI location=%s) registered\n", slot->name,
-			slot->location);
+	info("Slot [%s] registered\n", slot->name);
 	return 0;
 
 sysfs_fail:

drivers/pci/hotplug/shpchp_hpc.c

@@ -597,7 +597,7 @@ static void hpc_release_ctlr(struct controller *ctrl)
 	cleanup_slots(ctrl);
 
 	/*
-	 * Mask SERR and System Interrut generation
+	 * Mask SERR and System Interrupt generation
 	 */
 	serr_int = shpc_readl(ctrl, SERR_INTR_ENABLE);
 	serr_int |= (GLOBAL_INTR_MASK  | GLOBAL_SERR_MASK |

drivers/pci/intel-iommu.c

@@ -1781,7 +1781,7 @@ __intel_alloc_iova(struct device *dev, struct dmar_domain *domain,
 		/*
 		 * First try to allocate an io virtual address in
 		 * DMA_32BIT_MASK and if that fails then try allocating
-		 * from higer range
+		 * from higher range
 		 */
 		iova = iommu_alloc_iova(domain, size, DMA_32BIT_MASK);
 		if (!iova)

drivers/pci/msi.c

@@ -25,6 +25,51 @@
 
 static int pci_msi_enable = 1;
 
+/* Arch hooks */
+
+int __attribute__ ((weak))
+arch_msi_check_device(struct pci_dev *dev, int nvec, int type)
+{
+	return 0;
+}
+
+int __attribute__ ((weak))
+arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry)
+{
+	return 0;
+}
+
+int __attribute__ ((weak))
+arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
+{
+	struct msi_desc *entry;
+	int ret;
+
+	list_for_each_entry(entry, &dev->msi_list, list) {
+		ret = arch_setup_msi_irq(dev, entry);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq)
+{
+	return;
+}
+
+void __attribute__ ((weak))
+arch_teardown_msi_irqs(struct pci_dev *dev)
+{
+	struct msi_desc *entry;
+
+	list_for_each_entry(entry, &dev->msi_list, list) {
+		if (entry->irq != 0)
+			arch_teardown_msi_irq(entry->irq);
+	}
+}
+
 static void msi_set_enable(struct pci_dev *dev, int enable)
 {
 	int pos;
@@ -230,7 +275,6 @@ static void pci_intx_for_msi(struct pci_dev *dev, int enable)
 		pci_intx(dev, enable);
 }
 
-#ifdef CONFIG_PM
 static void __pci_restore_msi_state(struct pci_dev *dev)
 {
 	int pos;
@@ -288,7 +332,7 @@ void pci_restore_msi_state(struct pci_dev *dev)
 	__pci_restore_msi_state(dev);
 	__pci_restore_msix_state(dev);
 }
-#endif	/* CONFIG_PM */
+EXPORT_SYMBOL_GPL(pci_restore_msi_state);
 
 /**
  * msi_capability_init - configure device's MSI capability structure
@@ -683,49 +727,3 @@ void pci_msi_init_pci_dev(struct pci_dev *dev)
 {
 	INIT_LIST_HEAD(&dev->msi_list);
 }
-
-
-/* Arch hooks */
-
-int __attribute__ ((weak))
-arch_msi_check_device(struct pci_dev* dev, int nvec, int type)
-{
-	return 0;
-}
-
-int __attribute__ ((weak))
-arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry)
-{
-	return 0;
-}
-
-int __attribute__ ((weak))
-arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
-{
-	struct msi_desc *entry;
-	int ret;
-
-	list_for_each_entry(entry, &dev->msi_list, list) {
-		ret = arch_setup_msi_irq(dev, entry);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq)
-{
-	return;
-}
-
-void __attribute__ ((weak))
-arch_teardown_msi_irqs(struct pci_dev *dev)
-{
-	struct msi_desc *entry;
-
-	list_for_each_entry(entry, &dev->msi_list, list) {
-		if (entry->irq != 0)
-			arch_teardown_msi_irq(entry->irq);
-	}
-}

drivers/pci/pci-acpi.c

@@ -156,13 +156,13 @@ run_osc_out:
 }
 
 /**
- * pci_osc_support_set - register OS support to Firmware
+ * __pci_osc_support_set - register OS support to Firmware
  * @flags: OS support bits
  *
  * Update OS support fields and doing a _OSC Query to obtain an update
  * from Firmware on supported control bits.
  **/
-acpi_status pci_osc_support_set(u32 flags)
+acpi_status __pci_osc_support_set(u32 flags, const char *hid)
 {
 	u32 temp;
 	acpi_status retval;
@@ -176,7 +176,7 @@ acpi_status pci_osc_support_set(u32 flags)
 	temp = ctrlset_buf[OSC_CONTROL_TYPE];
 	ctrlset_buf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
 	ctrlset_buf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS;
-	acpi_get_devices ( PCI_ROOT_HID_STRING,
+	acpi_get_devices(hid,
 			acpi_query_osc,
 			ctrlset_buf,
 			(void **) &retval );
@@ -188,7 +188,6 @@ acpi_status pci_osc_support_set(u32 flags)
 	}
 	return AE_OK;
 }
-EXPORT_SYMBOL(pci_osc_support_set);
 
 /**
  * pci_osc_control_set - commit requested control to Firmware

drivers/pci/pci-driver.c

@@ -186,13 +186,11 @@ static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev,
 	    set_cpus_allowed(current, node_to_cpumask(node));
 	/* And set default memory allocation policy */
 	oldpol = current->mempolicy;
-	current->mempolicy = &default_policy;
-	mpol_get(current->mempolicy);
+	current->mempolicy = NULL;	/* fall back to system default policy */
 #endif
 	error = drv->probe(dev, id);
 #ifdef CONFIG_NUMA
 	set_cpus_allowed(current, oldmask);
-	mpol_free(current->mempolicy);
 	current->mempolicy = oldpol;
 #endif
 	return error;

drivers/pci/pci-sysfs.c

@@ -21,6 +21,7 @@
 #include <linux/topology.h>
 #include <linux/mm.h>
 #include <linux/capability.h>
+#include <linux/aspm.h>
 #include "pci.h"
 
 static int sysfs_initialized;	/* = 0 */
@@ -358,7 +359,7 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
 		   char *buf, loff_t off, size_t count)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
-                                                      struct class_device,
+                                                      struct device,
 						      kobj));
 
         /* Only support 1, 2 or 4 byte accesses */
@@ -383,7 +384,7 @@ pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
 		    char *buf, loff_t off, size_t count)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
-						      struct class_device,
+						      struct device,
 						      kobj));
         /* Only support 1, 2 or 4 byte accesses */
         if (count != 1 && count != 2 && count != 4)
@@ -407,7 +408,7 @@ pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
                     struct vm_area_struct *vma)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
-                                                      struct class_device,
+                                                      struct device,
 						      kobj));
 
         return pci_mmap_legacy_page_range(bus, vma);
@@ -650,6 +651,8 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
 	if (pcibios_add_platform_entries(pdev))
 		goto err_rom_file;
 
+	pcie_aspm_create_sysfs_dev_files(pdev);
+
 	return 0;
 
 err_rom_file:
@@ -679,6 +682,8 @@ void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
 	if (!sysfs_initialized)
 		return;
 
+	pcie_aspm_remove_sysfs_dev_files(pdev);
+
 	if (pdev->cfg_size < 4096)
 		sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
 	else

drivers/pci/pci.c

@@ -18,6 +18,7 @@
 #include <linux/spinlock.h>
 #include <linux/string.h>
 #include <linux/log2.h>
+#include <linux/aspm.h>
 #include <asm/dma.h>	/* isa_dma_bridge_buggy */
 #include "pci.h"
 
@@ -314,6 +315,24 @@ int pci_find_ht_capability(struct pci_dev *dev, int ht_cap)
 }
 EXPORT_SYMBOL_GPL(pci_find_ht_capability);
 
+void pcie_wait_pending_transaction(struct pci_dev *dev)
+{
+	int pos;
+	u16 reg16;
+
+	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	if (!pos)
+		return;
+	while (1) {
+		pci_read_config_word(dev, pos + PCI_EXP_DEVSTA, &reg16);
+		if (!(reg16 & PCI_EXP_DEVSTA_TRPND))
+			break;
+		cpu_relax();
+	}
+
+}
+EXPORT_SYMBOL_GPL(pcie_wait_pending_transaction);
+
 /**
  * pci_find_parent_resource - return resource region of parent bus of given region
  * @dev: PCI device structure contains resources to be searched
@@ -353,7 +372,7 @@ pci_find_parent_resource(const struct pci_dev *dev, struct resource *res)
  * Restore the BAR values for a given device, so as to make it
  * accessible by its driver.
  */
-void
+static void
 pci_restore_bars(struct pci_dev *dev)
 {
 	int i, numres;
@@ -501,6 +520,9 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 	if (need_restore)
 		pci_restore_bars(dev);
 
+	if (dev->bus->self)
+		pcie_aspm_pm_state_change(dev->bus->self);
+
 	return 0;
 }
 
@@ -551,6 +573,7 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	int pos, i = 0;
 	struct pci_cap_saved_state *save_state;
 	u16 *cap;
+	int found = 0;
 
 	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
 	if (pos <= 0)
@@ -559,6 +582,8 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
 	if (!save_state)
 		save_state = kzalloc(sizeof(*save_state) + sizeof(u16) * 4, GFP_KERNEL);
+	else
+		found = 1;
 	if (!save_state) {
 		dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
 		return -ENOMEM;
@@ -569,7 +594,9 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &cap[i++]);
 	pci_read_config_word(dev, pos + PCI_EXP_SLTCTL, &cap[i++]);
 	pci_read_config_word(dev, pos + PCI_EXP_RTCTL, &cap[i++]);
-	pci_add_saved_cap(dev, save_state);
+	save_state->cap_nr = PCI_CAP_ID_EXP;
+	if (!found)
+		pci_add_saved_cap(dev, save_state);
 	return 0;
 }
 
@@ -597,14 +624,17 @@ static int pci_save_pcix_state(struct pci_dev *dev)
 	int pos, i = 0;
 	struct pci_cap_saved_state *save_state;
 	u16 *cap;
+	int found = 0;
 
 	pos = pci_find_capability(dev, PCI_CAP_ID_PCIX);
 	if (pos <= 0)
 		return 0;
 
-	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
+	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_PCIX);
 	if (!save_state)
 		save_state = kzalloc(sizeof(*save_state) + sizeof(u16), GFP_KERNEL);
+	else
+		found = 1;
 	if (!save_state) {
 		dev_err(&dev->dev, "Out of memory in pci_save_pcie_state\n");
 		return -ENOMEM;
@@ -612,7 +642,9 @@ static int pci_save_pcix_state(struct pci_dev *dev)
 	cap = (u16 *)&save_state->data[0];
 
 	pci_read_config_word(dev, pos + PCI_X_CMD, &cap[i++]);
-	pci_add_saved_cap(dev, save_state);
+	save_state->cap_nr = PCI_CAP_ID_PCIX;
+	if (!found)
+		pci_add_saved_cap(dev, save_state);
 	return 0;
 }
 
@@ -713,29 +745,51 @@ int pci_reenable_device(struct pci_dev *dev)
 	return 0;
 }
 
-/**
- * pci_enable_device_bars - Initialize some of a device for use
- * @dev: PCI device to be initialized
- * @bars: bitmask of BAR's that must be configured
- *
- *  Initialize device before it's used by a driver. Ask low-level code
- *  to enable selected I/O and memory resources. Wake up the device if it
- *  was suspended. Beware, this function can fail.
- */
-int
-pci_enable_device_bars(struct pci_dev *dev, int bars)
+static int __pci_enable_device_flags(struct pci_dev *dev,
+				     resource_size_t flags)
 {
 	int err;
+	int i, bars = 0;
 
 	if (atomic_add_return(1, &dev->enable_cnt) > 1)
 		return 0;		/* already enabled */
 
+	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
+		if (dev->resource[i].flags & flags)
+			bars |= (1 << i);
+
 	err = do_pci_enable_device(dev, bars);
 	if (err < 0)
 		atomic_dec(&dev->enable_cnt);
 	return err;
 }
 
+/**
+ * pci_enable_device_io - Initialize a device for use with IO space
+ * @dev: PCI device to be initialized
+ *
+ *  Initialize device before it's used by a driver. Ask low-level code
+ *  to enable I/O resources. Wake up the device if it was suspended.
+ *  Beware, this function can fail.
+ */
+int pci_enable_device_io(struct pci_dev *dev)
+{
+	return __pci_enable_device_flags(dev, IORESOURCE_IO);
+}
+
+/**
+ * pci_enable_device_mem - Initialize a device for use with Memory space
+ * @dev: PCI device to be initialized
+ *
+ *  Initialize device before it's used by a driver. Ask low-level code
+ *  to enable Memory resources. Wake up the device if it was suspended.
+ *  Beware, this function can fail.
+ */
+int pci_enable_device_mem(struct pci_dev *dev)
+{
+	return __pci_enable_device_flags(dev, IORESOURCE_MEM);
+}
+
 /**
  * pci_enable_device - Initialize device before it's used by a driver.
  * @dev: PCI device to be initialized
@@ -749,7 +803,7 @@ pci_enable_device_bars(struct pci_dev *dev, int bars)
  */
 int pci_enable_device(struct pci_dev *dev)
 {
-	return pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1);
+	return __pci_enable_device_flags(dev, IORESOURCE_MEM | IORESOURCE_IO);
 }
 
 /*
@@ -885,6 +939,9 @@ pci_disable_device(struct pci_dev *dev)
 	if (atomic_sub_return(1, &dev->enable_cnt) != 0)
 		return;
 
+	/* Wait for all transactions are finished before disabling the device */
+	pcie_wait_pending_transaction(dev);
+
 	pci_read_config_word(dev, PCI_COMMAND, &pci_command);
 	if (pci_command & PCI_COMMAND_MASTER) {
 		pci_command &= ~PCI_COMMAND_MASTER;
@@ -1619,9 +1676,9 @@ early_param("pci", pci_setup);
 
 device_initcall(pci_init);
 
-EXPORT_SYMBOL_GPL(pci_restore_bars);
 EXPORT_SYMBOL(pci_reenable_device);
-EXPORT_SYMBOL(pci_enable_device_bars);
+EXPORT_SYMBOL(pci_enable_device_io);
+EXPORT_SYMBOL(pci_enable_device_mem);
 EXPORT_SYMBOL(pci_enable_device);
 EXPORT_SYMBOL(pcim_enable_device);
 EXPORT_SYMBOL(pcim_pin_device);

drivers/pci/pci.h

@@ -6,8 +6,10 @@ extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
 extern void pci_cleanup_rom(struct pci_dev *dev);
 
 /* Firmware callbacks */
-extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev, pm_message_t state);
-extern int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t state);
+extern pci_power_t (*platform_pci_choose_state)(struct pci_dev *dev,
+						pm_message_t state);
+extern int (*platform_pci_set_power_state)(struct pci_dev *dev,
+						pci_power_t state);
 
 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
@@ -45,12 +47,6 @@ static inline void pci_no_msi(void) { }
 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
 #endif
 
-#if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
-void pci_restore_msi_state(struct pci_dev *dev);
-#else
-static inline void pci_restore_msi_state(struct pci_dev *dev) {}
-#endif
-
 #ifdef CONFIG_PCIEAER
 void pci_no_aer(void);
 #else
@@ -68,14 +64,14 @@ static inline int pci_no_d1d2(struct pci_dev *dev)
 }
 extern int pcie_mch_quirk;
 extern struct device_attribute pci_dev_attrs[];
-extern struct class_device_attribute class_device_attr_cpuaffinity;
+extern struct device_attribute dev_attr_cpuaffinity;
 
 /**
  * pci_match_one_device - Tell if a PCI device structure has a matching
  *                        PCI device id structure
  * @id: single PCI device id structure to match
  * @dev: the PCI device structure to match against
- * 
+ *
  * Returns the matching pci_device_id structure or %NULL if there is no match.
  */
 static inline const struct pci_device_id *

drivers/pci/pcie/Kconfig

@@ -26,3 +26,23 @@ config HOTPLUG_PCI_PCIE
 	  When in doubt, say N.
 
 source "drivers/pci/pcie/aer/Kconfig"
+
+#
+# PCI Express ASPM
+#
+config PCIEASPM
+	bool "PCI Express ASPM support(Experimental)"
+	depends on PCI && EXPERIMENTAL
+	default y
+	help
+	  This enables PCI Express ASPM (Active State Power Management) and
+	  Clock Power Management. ASPM supports state L0/L0s/L1.
+
+	  When in doubt, say N.
+config PCIEASPM_DEBUG
+	bool "Debug PCI Express ASPM"
+	depends on PCIEASPM
+	default n
+	help
+	  This enables PCI Express ASPM debug support. It will add per-device
+	  interface to control ASPM.

drivers/pci/pcie/Makefile

@@ -2,6 +2,9 @@
 # Makefile for PCI-Express PORT Driver
 #
 
+# Build PCI Express ASPM if needed
+obj-$(CONFIG_PCIEASPM)		+= aspm.o
+
 pcieportdrv-y			:= portdrv_core.o portdrv_pci.o portdrv_bus.o
 
 obj-$(CONFIG_PCIEPORTBUS)	+= pcieportdrv.o

drivers/pci/pcie/aer/aerdrv_acpi.c

@@ -31,26 +31,16 @@ int aer_osc_setup(struct pcie_device *pciedev)
 {
 	acpi_status status = AE_NOT_FOUND;
 	struct pci_dev *pdev = pciedev->port;
-	acpi_handle handle = DEVICE_ACPI_HANDLE(&pdev->dev);
-	struct pci_bus *parent;
+	acpi_handle handle = 0;
 
-	while (!handle) {
-		if (!pdev || !pdev->bus->parent)
-			break;
-		parent = pdev->bus->parent;
-		if (!parent->self)
-			/* Parent must be a host bridge */
-			handle = acpi_get_pci_rootbridge_handle(
-					pci_domain_nr(parent),
-					parent->number);
-		else
-			handle = DEVICE_ACPI_HANDLE(
-					&(parent->self->dev));
-		pdev = parent->self;
-	}
+	/* Find root host bridge */
+	while (pdev->bus && pdev->bus->self)
+		pdev = pdev->bus->self;
+	handle = acpi_get_pci_rootbridge_handle(
+		pci_domain_nr(pdev->bus), pdev->bus->number);
 
 	if (handle) {
-		pci_osc_support_set(OSC_EXT_PCI_CONFIG_SUPPORT);
+		pcie_osc_support_set(OSC_EXT_PCI_CONFIG_SUPPORT);
 		status = pci_osc_control_set(handle,
 					OSC_PCI_EXPRESS_AER_CONTROL |
 					OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);

drivers/pci/pcie/aspm.c

@@ -0,0 +1,802 @@
+/*
+ * File:	drivers/pci/pcie/aspm.c
+ * Enabling PCIE link L0s/L1 state and Clock Power Management
+ *
+ * Copyright (C) 2007 Intel
+ * Copyright (C) Zhang Yanmin (yanmin.zhang@intel.com)
+ * Copyright (C) Shaohua Li (shaohua.li@intel.com)
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/pci.h>
+#include <linux/pci_regs.h>
+#include <linux/errno.h>
+#include <linux/pm.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/aspm.h>
+#include <acpi/acpi_bus.h>
+#include <linux/pci-acpi.h>
+#include "../pci.h"
+
+#ifdef MODULE_PARAM_PREFIX
+#undef MODULE_PARAM_PREFIX
+#endif
+#define MODULE_PARAM_PREFIX "pcie_aspm."
+
+struct endpoint_state {
+	unsigned int l0s_acceptable_latency;
+	unsigned int l1_acceptable_latency;
+};
+
+struct pcie_link_state {
+	struct list_head sibiling;
+	struct pci_dev *pdev;
+
+	/* ASPM state */
+	unsigned int support_state;
+	unsigned int enabled_state;
+	unsigned int bios_aspm_state;
+	/* upstream component */
+	unsigned int l0s_upper_latency;
+	unsigned int l1_upper_latency;
+	/* downstream component */
+	unsigned int l0s_down_latency;
+	unsigned int l1_down_latency;
+	/* Clock PM state*/
+	unsigned int clk_pm_capable;
+	unsigned int clk_pm_enabled;
+	unsigned int bios_clk_state;
+
+	/*
+	 * A pcie downstream port only has one slot under it, so at most there
+	 * are 8 functions
+	 */
+	struct endpoint_state endpoints[8];
+};
+
+static int aspm_disabled;
+static DEFINE_MUTEX(aspm_lock);
+static LIST_HEAD(link_list);
+
+#define POLICY_DEFAULT 0	/* BIOS default setting */
+#define POLICY_PERFORMANCE 1	/* high performance */
+#define POLICY_POWERSAVE 2	/* high power saving */
+static int aspm_policy;
+static const char *policy_str[] = {
+	[POLICY_DEFAULT] = "default",
+	[POLICY_PERFORMANCE] = "performance",
+	[POLICY_POWERSAVE] = "powersave"
+};
+
+static int policy_to_aspm_state(struct pci_dev *pdev)
+{
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	switch (aspm_policy) {
+	case POLICY_PERFORMANCE:
+		/* Disable ASPM and Clock PM */
+		return 0;
+	case POLICY_POWERSAVE:
+		/* Enable ASPM L0s/L1 */
+		return PCIE_LINK_STATE_L0S|PCIE_LINK_STATE_L1;
+	case POLICY_DEFAULT:
+		return link_state->bios_aspm_state;
+	}
+	return 0;
+}
+
+static int policy_to_clkpm_state(struct pci_dev *pdev)
+{
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	switch (aspm_policy) {
+	case POLICY_PERFORMANCE:
+		/* Disable ASPM and Clock PM */
+		return 0;
+	case POLICY_POWERSAVE:
+		/* Disable Clock PM */
+		return 1;
+	case POLICY_DEFAULT:
+		return link_state->bios_clk_state;
+	}
+	return 0;
+}
+
+static void pcie_set_clock_pm(struct pci_dev *pdev, int enable)
+{
+	struct pci_dev *child_dev;
+	int pos;
+	u16 reg16;
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	list_for_each_entry(child_dev, &pdev->subordinate->devices, bus_list) {
+		pos = pci_find_capability(child_dev, PCI_CAP_ID_EXP);
+		if (!pos)
+			return;
+		pci_read_config_word(child_dev, pos + PCI_EXP_LNKCTL, &reg16);
+		if (enable)
+			reg16 |= PCI_EXP_LNKCTL_CLKREQ_EN;
+		else
+			reg16 &= ~PCI_EXP_LNKCTL_CLKREQ_EN;
+		pci_write_config_word(child_dev, pos + PCI_EXP_LNKCTL, reg16);
+	}
+	link_state->clk_pm_enabled = !!enable;
+}
+
+static void pcie_check_clock_pm(struct pci_dev *pdev)
+{
+	int pos;
+	u32 reg32;
+	u16 reg16;
+	int capable = 1, enabled = 1;
+	struct pci_dev *child_dev;
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	/* All functions should have the same cap and state, take the worst */
+	list_for_each_entry(child_dev, &pdev->subordinate->devices, bus_list) {
+		pos = pci_find_capability(child_dev, PCI_CAP_ID_EXP);
+		if (!pos)
+			return;
+		pci_read_config_dword(child_dev, pos + PCI_EXP_LNKCAP, &reg32);
+		if (!(reg32 & PCI_EXP_LNKCAP_CLKPM)) {
+			capable = 0;
+			enabled = 0;
+			break;
+		}
+		pci_read_config_word(child_dev, pos + PCI_EXP_LNKCTL, &reg16);
+		if (!(reg16 & PCI_EXP_LNKCTL_CLKREQ_EN))
+			enabled = 0;
+	}
+	link_state->clk_pm_capable = capable;
+	link_state->clk_pm_enabled = enabled;
+	link_state->bios_clk_state = enabled;
+	pcie_set_clock_pm(pdev, policy_to_clkpm_state(pdev));
+}
+
+/*
+ * pcie_aspm_configure_common_clock: check if the 2 ends of a link
+ *   could use common clock. If they are, configure them to use the
+ *   common clock. That will reduce the ASPM state exit latency.
+ */
+static void pcie_aspm_configure_common_clock(struct pci_dev *pdev)
+{
+	int pos, child_pos;
+	u16 reg16 = 0;
+	struct pci_dev *child_dev;
+	int same_clock = 1;
+
+	/*
+	 * all functions of a slot should have the same Slot Clock
+	 * Configuration, so just check one function
+	 * */
+	child_dev = list_entry(pdev->subordinate->devices.next, struct pci_dev,
+		bus_list);
+	BUG_ON(!child_dev->is_pcie);
+
+	/* Check downstream component if bit Slot Clock Configuration is 1 */
+	child_pos = pci_find_capability(child_dev, PCI_CAP_ID_EXP);
+	pci_read_config_word(child_dev, child_pos + PCI_EXP_LNKSTA, &reg16);
+	if (!(reg16 & PCI_EXP_LNKSTA_SLC))
+		same_clock = 0;
+
+	/* Check upstream component if bit Slot Clock Configuration is 1 */
+	pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	pci_read_config_word(pdev, pos + PCI_EXP_LNKSTA, &reg16);
+	if (!(reg16 & PCI_EXP_LNKSTA_SLC))
+		same_clock = 0;
+
+	/* Configure downstream component, all functions */
+	list_for_each_entry(child_dev, &pdev->subordinate->devices, bus_list) {
+		child_pos = pci_find_capability(child_dev, PCI_CAP_ID_EXP);
+		pci_read_config_word(child_dev, child_pos + PCI_EXP_LNKCTL,
+			&reg16);
+		if (same_clock)
+			reg16 |= PCI_EXP_LNKCTL_CCC;
+		else
+			reg16 &= ~PCI_EXP_LNKCTL_CCC;
+		pci_write_config_word(child_dev, child_pos + PCI_EXP_LNKCTL,
+			reg16);
+	}
+
+	/* Configure upstream component */
+	pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
+	if (same_clock)
+		reg16 |= PCI_EXP_LNKCTL_CCC;
+	else
+		reg16 &= ~PCI_EXP_LNKCTL_CCC;
+	pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
+
+	/* retrain link */
+	reg16 |= PCI_EXP_LNKCTL_RL;
+	pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
+
+	/* Wait for link training end */
+	while (1) {
+		pci_read_config_word(pdev, pos + PCI_EXP_LNKSTA, &reg16);
+		if (!(reg16 & PCI_EXP_LNKSTA_LT))
+			break;
+		cpu_relax();
+	}
+}
+
+/*
+ * calc_L0S_latency: Convert L0s latency encoding to ns
+ */
+static unsigned int calc_L0S_latency(unsigned int latency_encoding, int ac)
+{
+	unsigned int ns = 64;
+
+	if (latency_encoding == 0x7) {
+		if (ac)
+			ns = -1U;
+		else
+			ns = 5*1000; /* > 4us */
+	} else
+		ns *= (1 << latency_encoding);
+	return ns;
+}
+
+/*
+ * calc_L1_latency: Convert L1 latency encoding to ns
+ */
+static unsigned int calc_L1_latency(unsigned int latency_encoding, int ac)
+{
+	unsigned int ns = 1000;
+
+	if (latency_encoding == 0x7) {
+		if (ac)
+			ns = -1U;
+		else
+			ns = 65*1000; /* > 64us */
+	} else
+		ns *= (1 << latency_encoding);
+	return ns;
+}
+
+static void pcie_aspm_get_cap_device(struct pci_dev *pdev, u32 *state,
+	unsigned int *l0s, unsigned int *l1, unsigned int *enabled)
+{
+	int pos;
+	u16 reg16;
+	u32 reg32;
+	unsigned int latency;
+
+	pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	pci_read_config_dword(pdev, pos + PCI_EXP_LNKCAP, &reg32);
+	*state = (reg32 & PCI_EXP_LNKCAP_ASPMS) >> 10;
+	if (*state != PCIE_LINK_STATE_L0S &&
+		*state != (PCIE_LINK_STATE_L1|PCIE_LINK_STATE_L0S))
+		* state = 0;
+	if (*state == 0)
+		return;
+
+	latency = (reg32 & PCI_EXP_LNKCAP_L0SEL) >> 12;
+	*l0s = calc_L0S_latency(latency, 0);
+	if (*state & PCIE_LINK_STATE_L1) {
+		latency = (reg32 & PCI_EXP_LNKCAP_L1EL) >> 15;
+		*l1 = calc_L1_latency(latency, 0);
+	}
+	pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
+	*enabled = reg16 & (PCIE_LINK_STATE_L0S|PCIE_LINK_STATE_L1);
+}
+
+static void pcie_aspm_cap_init(struct pci_dev *pdev)
+{
+	struct pci_dev *child_dev;
+	u32 state, tmp;
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	/* upstream component states */
+	pcie_aspm_get_cap_device(pdev, &link_state->support_state,
+		&link_state->l0s_upper_latency,
+		&link_state->l1_upper_latency,
+		&link_state->enabled_state);
+	/* downstream component states, all functions have the same setting */
+	child_dev = list_entry(pdev->subordinate->devices.next, struct pci_dev,
+		bus_list);
+	pcie_aspm_get_cap_device(child_dev, &state,
+		&link_state->l0s_down_latency,
+		&link_state->l1_down_latency,
+		&tmp);
+	link_state->support_state &= state;
+	if (!link_state->support_state)
+		return;
+	link_state->enabled_state &= link_state->support_state;
+	link_state->bios_aspm_state = link_state->enabled_state;
+
+	/* ENDPOINT states*/
+	list_for_each_entry(child_dev, &pdev->subordinate->devices, bus_list) {
+		int pos;
+		u32 reg32;
+		unsigned int latency;
+		struct endpoint_state *ep_state =
+			&link_state->endpoints[PCI_FUNC(child_dev->devfn)];
+
+		if (child_dev->pcie_type != PCI_EXP_TYPE_ENDPOINT &&
+			child_dev->pcie_type != PCI_EXP_TYPE_LEG_END)
+			continue;
+
+		pos = pci_find_capability(child_dev, PCI_CAP_ID_EXP);
+		pci_read_config_dword(child_dev, pos + PCI_EXP_DEVCAP, &reg32);
+		latency = (reg32 & PCI_EXP_DEVCAP_L0S) >> 6;
+		latency = calc_L0S_latency(latency, 1);
+		ep_state->l0s_acceptable_latency = latency;
+		if (link_state->support_state & PCIE_LINK_STATE_L1) {
+			latency = (reg32 & PCI_EXP_DEVCAP_L1) >> 9;
+			latency = calc_L1_latency(latency, 1);
+			ep_state->l1_acceptable_latency = latency;
+		}
+	}
+}
+
+static unsigned int __pcie_aspm_check_state_one(struct pci_dev *pdev,
+	unsigned int state)
+{
+	struct pci_dev *parent_dev, *tmp_dev;
+	unsigned int latency, l1_latency = 0;
+	struct pcie_link_state *link_state;
+	struct endpoint_state *ep_state;
+
+	parent_dev = pdev->bus->self;
+	link_state = parent_dev->link_state;
+	state &= link_state->support_state;
+	if (state == 0)
+		return 0;
+	ep_state = &link_state->endpoints[PCI_FUNC(pdev->devfn)];
+
+	/*
+	 * Check latency for endpoint device.
+	 * TBD: The latency from the endpoint to root complex vary per
+	 * switch's upstream link state above the device. Here we just do a
+	 * simple check which assumes all links above the device can be in L1
+	 * state, that is we just consider the worst case. If switch's upstream
+	 * link can't be put into L0S/L1, then our check is too strictly.
+	 */
+	tmp_dev = pdev;
+	while (state & (PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1)) {
+		parent_dev = tmp_dev->bus->self;
+		link_state = parent_dev->link_state;
+		if (state & PCIE_LINK_STATE_L0S) {
+			latency = max_t(unsigned int,
+					link_state->l0s_upper_latency,
+					link_state->l0s_down_latency);
+			if (latency > ep_state->l0s_acceptable_latency)
+				state &= ~PCIE_LINK_STATE_L0S;
+		}
+		if (state & PCIE_LINK_STATE_L1) {
+			latency = max_t(unsigned int,
+					link_state->l1_upper_latency,
+					link_state->l1_down_latency);
+			if (latency + l1_latency >
+					ep_state->l1_acceptable_latency)
+				state &= ~PCIE_LINK_STATE_L1;
+		}
+		if (!parent_dev->bus->self) /* parent_dev is a root port */
+			break;
+		else {
+			/*
+			 * parent_dev is the downstream port of a switch, make
+			 * tmp_dev the upstream port of the switch
+			 */
+			tmp_dev = parent_dev->bus->self;
+			/*
+			 * every switch on the path to root complex need 1 more
+			 * microsecond for L1. Spec doesn't mention L0S.
+			 */
+			if (state & PCIE_LINK_STATE_L1)
+				l1_latency += 1000;
+		}
+	}
+	return state;
+}
+
+static unsigned int pcie_aspm_check_state(struct pci_dev *pdev,
+	unsigned int state)
+{
+	struct pci_dev *child_dev;
+
+	/* If no child, disable the link */
+	if (list_empty(&pdev->subordinate->devices))
+		return 0;
+	list_for_each_entry(child_dev, &pdev->subordinate->devices, bus_list) {
+		if (child_dev->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE) {
+			/*
+			 * If downstream component of a link is pci bridge, we
+			 * disable ASPM for now for the link
+			 * */
+			state = 0;
+			break;
+		}
+		if ((child_dev->pcie_type != PCI_EXP_TYPE_ENDPOINT &&
+			child_dev->pcie_type != PCI_EXP_TYPE_LEG_END))
+			continue;
+		/* Device not in D0 doesn't need check latency */
+		if (child_dev->current_state == PCI_D1 ||
+			child_dev->current_state == PCI_D2 ||
+			child_dev->current_state == PCI_D3hot ||
+			child_dev->current_state == PCI_D3cold)
+			continue;
+		state = __pcie_aspm_check_state_one(child_dev, state);
+	}
+	return state;
+}
+
+static void __pcie_aspm_config_one_dev(struct pci_dev *pdev, unsigned int state)
+{
+	u16 reg16;
+	int pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+
+	pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
+	reg16 &= ~0x3;
+	reg16 |= state;
+	pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
+}
+
+static void __pcie_aspm_config_link(struct pci_dev *pdev, unsigned int state)
+{
+	struct pci_dev *child_dev;
+	int valid = 1;
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	/*
+	 * if the downstream component has pci bridge function, don't do ASPM
+	 * now
+	 */
+	list_for_each_entry(child_dev, &pdev->subordinate->devices, bus_list) {
+		if (child_dev->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE) {
+			valid = 0;
+			break;
+		}
+	}
+	if (!valid)
+		return;
+
+	/*
+	 * spec 2.0 suggests all functions should be configured the same
+	 * setting for ASPM. Enabling ASPM L1 should be done in upstream
+	 * component first and then downstream, and vice versa for disabling
+	 * ASPM L1. Spec doesn't mention L0S.
+	 */
+	if (state & PCIE_LINK_STATE_L1)
+		__pcie_aspm_config_one_dev(pdev, state);
+
+	list_for_each_entry(child_dev, &pdev->subordinate->devices, bus_list)
+		__pcie_aspm_config_one_dev(child_dev, state);
+
+	if (!(state & PCIE_LINK_STATE_L1))
+		__pcie_aspm_config_one_dev(pdev, state);
+
+	link_state->enabled_state = state;
+}
+
+static void __pcie_aspm_configure_link_state(struct pci_dev *pdev,
+	unsigned int state)
+{
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	if (link_state->support_state == 0)
+		return;
+	state &= PCIE_LINK_STATE_L0S|PCIE_LINK_STATE_L1;
+
+	/* state 0 means disabling aspm */
+	state = pcie_aspm_check_state(pdev, state);
+	if (link_state->enabled_state == state)
+		return;
+	__pcie_aspm_config_link(pdev, state);
+}
+
+/*
+ * pcie_aspm_configure_link_state: enable/disable PCI express link state
+ * @pdev: the root port or switch downstream port
+ */
+static void pcie_aspm_configure_link_state(struct pci_dev *pdev,
+	unsigned int state)
+{
+	down_read(&pci_bus_sem);
+	mutex_lock(&aspm_lock);
+	__pcie_aspm_configure_link_state(pdev, state);
+	mutex_unlock(&aspm_lock);
+	up_read(&pci_bus_sem);
+}
+
+static void free_link_state(struct pci_dev *pdev)
+{
+	kfree(pdev->link_state);
+	pdev->link_state = NULL;
+}
+
+/*
+ * pcie_aspm_init_link_state: Initiate PCI express link state.
+ * It is called after the pcie and its children devices are scaned.
+ * @pdev: the root port or switch downstream port
+ */
+void pcie_aspm_init_link_state(struct pci_dev *pdev)
+{
+	unsigned int state;
+	struct pcie_link_state *link_state;
+	int error = 0;
+
+	if (aspm_disabled || !pdev->is_pcie || pdev->link_state)
+		return;
+	if (pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
+		pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM)
+		return;
+	down_read(&pci_bus_sem);
+	if (list_empty(&pdev->subordinate->devices))
+		goto out;
+
+	mutex_lock(&aspm_lock);
+
+	link_state = kzalloc(sizeof(*link_state), GFP_KERNEL);
+	if (!link_state)
+		goto unlock_out;
+	pdev->link_state = link_state;
+
+	pcie_aspm_configure_common_clock(pdev);
+
+	pcie_aspm_cap_init(pdev);
+
+	/* config link state to avoid BIOS error */
+	state = pcie_aspm_check_state(pdev, policy_to_aspm_state(pdev));
+	__pcie_aspm_config_link(pdev, state);
+
+	pcie_check_clock_pm(pdev);
+
+	link_state->pdev = pdev;
+	list_add(&link_state->sibiling, &link_list);
+
+unlock_out:
+	if (error)
+		free_link_state(pdev);
+	mutex_unlock(&aspm_lock);
+out:
+	up_read(&pci_bus_sem);
+}
+
+/* @pdev: the endpoint device */
+void pcie_aspm_exit_link_state(struct pci_dev *pdev)
+{
+	struct pci_dev *parent = pdev->bus->self;
+	struct pcie_link_state *link_state = parent->link_state;
+
+	if (aspm_disabled || !pdev->is_pcie || !parent || !link_state)
+		return;
+	if (parent->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
+		parent->pcie_type != PCI_EXP_TYPE_DOWNSTREAM)
+		return;
+	down_read(&pci_bus_sem);
+	mutex_lock(&aspm_lock);
+
+	/*
+	 * All PCIe functions are in one slot, remove one function will remove
+	 * the the whole slot, so just wait
+	 */
+	if (!list_empty(&parent->subordinate->devices))
+		goto out;
+
+	/* All functions are removed, so just disable ASPM for the link */
+	__pcie_aspm_config_one_dev(parent, 0);
+	list_del(&link_state->sibiling);
+	/* Clock PM is for endpoint device */
+
+	free_link_state(parent);
+out:
+	mutex_unlock(&aspm_lock);
+	up_read(&pci_bus_sem);
+}
+
+/* @pdev: the root port or switch downstream port */
+void pcie_aspm_pm_state_change(struct pci_dev *pdev)
+{
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	if (aspm_disabled || !pdev->is_pcie || !pdev->link_state)
+		return;
+	if (pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
+		pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM)
+		return;
+	/*
+	 * devices changed PM state, we should recheck if latency meets all
+	 * functions' requirement
+	 */
+	pcie_aspm_configure_link_state(pdev, link_state->enabled_state);
+}
+
+/*
+ * pci_disable_link_state - disable pci device's link state, so the link will
+ * never enter specific states
+ */
+void pci_disable_link_state(struct pci_dev *pdev, int state)
+{
+	struct pci_dev *parent = pdev->bus->self;
+	struct pcie_link_state *link_state;
+
+	if (aspm_disabled || !pdev->is_pcie)
+		return;
+	if (pdev->pcie_type == PCI_EXP_TYPE_ROOT_PORT ||
+	    pdev->pcie_type == PCI_EXP_TYPE_DOWNSTREAM)
+		parent = pdev;
+	if (!parent)
+		return;
+
+	down_read(&pci_bus_sem);
+	mutex_lock(&aspm_lock);
+	link_state = parent->link_state;
+	link_state->support_state &=
+		~(state & (PCIE_LINK_STATE_L0S|PCIE_LINK_STATE_L1));
+	if (state & PCIE_LINK_STATE_CLKPM)
+		link_state->clk_pm_capable = 0;
+
+	__pcie_aspm_configure_link_state(parent, link_state->enabled_state);
+	if (!link_state->clk_pm_capable && link_state->clk_pm_enabled)
+		pcie_set_clock_pm(parent, 0);
+	mutex_unlock(&aspm_lock);
+	up_read(&pci_bus_sem);
+}
+EXPORT_SYMBOL(pci_disable_link_state);
+
+static int pcie_aspm_set_policy(const char *val, struct kernel_param *kp)
+{
+	int i;
+	struct pci_dev *pdev;
+	struct pcie_link_state *link_state;
+
+	for (i = 0; i < ARRAY_SIZE(policy_str); i++)
+		if (!strncmp(val, policy_str[i], strlen(policy_str[i])))
+			break;
+	if (i >= ARRAY_SIZE(policy_str))
+		return -EINVAL;
+	if (i == aspm_policy)
+		return 0;
+
+	down_read(&pci_bus_sem);
+	mutex_lock(&aspm_lock);
+	aspm_policy = i;
+	list_for_each_entry(link_state, &link_list, sibiling) {
+		pdev = link_state->pdev;
+		__pcie_aspm_configure_link_state(pdev,
+			policy_to_aspm_state(pdev));
+		if (link_state->clk_pm_capable &&
+		    link_state->clk_pm_enabled != policy_to_clkpm_state(pdev))
+			pcie_set_clock_pm(pdev, policy_to_clkpm_state(pdev));
+
+	}
+	mutex_unlock(&aspm_lock);
+	up_read(&pci_bus_sem);
+	return 0;
+}
+
+static int pcie_aspm_get_policy(char *buffer, struct kernel_param *kp)
+{
+	int i, cnt = 0;
+	for (i = 0; i < ARRAY_SIZE(policy_str); i++)
+		if (i == aspm_policy)
+			cnt += sprintf(buffer + cnt, "[%s] ", policy_str[i]);
+		else
+			cnt += sprintf(buffer + cnt, "%s ", policy_str[i]);
+	return cnt;
+}
+
+module_param_call(policy, pcie_aspm_set_policy, pcie_aspm_get_policy,
+	NULL, 0644);
+
+#ifdef CONFIG_PCIEASPM_DEBUG
+static ssize_t link_state_show(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct pci_dev *pci_device = to_pci_dev(dev);
+	struct pcie_link_state *link_state = pci_device->link_state;
+
+	return sprintf(buf, "%d\n", link_state->enabled_state);
+}
+
+static ssize_t link_state_store(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t n)
+{
+	struct pci_dev *pci_device = to_pci_dev(dev);
+	int state;
+
+	if (n < 1)
+		return -EINVAL;
+	state = buf[0]-'0';
+	if (state >= 0 && state <= 3) {
+		/* setup link aspm state */
+		pcie_aspm_configure_link_state(pci_device, state);
+		return n;
+	}
+
+	return -EINVAL;
+}
+
+static ssize_t clk_ctl_show(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct pci_dev *pci_device = to_pci_dev(dev);
+	struct pcie_link_state *link_state = pci_device->link_state;
+
+	return sprintf(buf, "%d\n", link_state->clk_pm_enabled);
+}
+
+static ssize_t clk_ctl_store(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t n)
+{
+	struct pci_dev *pci_device = to_pci_dev(dev);
+	int state;
+
+	if (n < 1)
+		return -EINVAL;
+	state = buf[0]-'0';
+
+	down_read(&pci_bus_sem);
+	mutex_lock(&aspm_lock);
+	pcie_set_clock_pm(pci_device, !!state);
+	mutex_unlock(&aspm_lock);
+	up_read(&pci_bus_sem);
+
+	return n;
+}
+
+static DEVICE_ATTR(link_state, 0644, link_state_show, link_state_store);
+static DEVICE_ATTR(clk_ctl, 0644, clk_ctl_show, clk_ctl_store);
+
+static char power_group[] = "power";
+void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev)
+{
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	if (!pdev->is_pcie || (pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
+		pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM))
+		return;
+
+	if (link_state->support_state)
+		sysfs_add_file_to_group(&pdev->dev.kobj,
+			&dev_attr_link_state.attr, power_group);
+	if (link_state->clk_pm_capable)
+		sysfs_add_file_to_group(&pdev->dev.kobj,
+			&dev_attr_clk_ctl.attr, power_group);
+}
+
+void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev)
+{
+	struct pcie_link_state *link_state = pdev->link_state;
+
+	if (!pdev->is_pcie || (pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
+		pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM))
+		return;
+
+	if (link_state->support_state)
+		sysfs_remove_file_from_group(&pdev->dev.kobj,
+			&dev_attr_link_state.attr, power_group);
+	if (link_state->clk_pm_capable)
+		sysfs_remove_file_from_group(&pdev->dev.kobj,
+			&dev_attr_clk_ctl.attr, power_group);
+}
+#endif
+
+static int __init pcie_aspm_disable(char *str)
+{
+	aspm_disabled = 1;
+	return 1;
+}
+
+__setup("pcie_noaspm", pcie_aspm_disable);
+
+static int __init pcie_aspm_init(void)
+{
+	if (aspm_disabled)
+		return 0;
+	pci_osc_support_set(OSC_ACTIVE_STATE_PWR_SUPPORT|
+		OSC_CLOCK_PWR_CAPABILITY_SUPPORT);
+	return 0;
+}
+
+fs_initcall(pcie_aspm_init);

drivers/pci/pcie/portdrv_core.c

@@ -192,9 +192,8 @@ static int get_port_device_capability(struct pci_dev *dev)
 		if (reg32 & SLOT_HP_CAPABLE_MASK)
 			services |= PCIE_PORT_SERVICE_HP;
 	} 
-	/* PME Capable */
-	pos = pci_find_capability(dev, PCI_CAP_ID_PME);
-	if (pos) 
+	/* PME Capable - root port capability */
+	if (((reg16 >> 4) & PORT_TYPE_MASK) == PCIE_RC_PORT)
 		services |= PCIE_PORT_SERVICE_PME;
 	
 	pos = PCI_CFG_SPACE_SIZE;

drivers/pci/probe.c

@@ -9,6 +9,7 @@
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/cpumask.h>
+#include <linux/aspm.h>
 #include "pci.h"
 
 #define CARDBUS_LATENCY_TIMER	176	/* secondary latency timer */
@@ -53,7 +54,7 @@ static void pci_create_legacy_files(struct pci_bus *b)
 		b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
 		b->legacy_io->read = pci_read_legacy_io;
 		b->legacy_io->write = pci_write_legacy_io;
-		class_device_create_bin_file(&b->class_dev, b->legacy_io);
+		device_create_bin_file(&b->dev, b->legacy_io);
 
 		/* Allocated above after the legacy_io struct */
 		b->legacy_mem = b->legacy_io + 1;
@@ -61,15 +62,15 @@ static void pci_create_legacy_files(struct pci_bus *b)
 		b->legacy_mem->size = 1024*1024;
 		b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
 		b->legacy_mem->mmap = pci_mmap_legacy_mem;
-		class_device_create_bin_file(&b->class_dev, b->legacy_mem);
+		device_create_bin_file(&b->dev, b->legacy_mem);
 	}
 }
 
 void pci_remove_legacy_files(struct pci_bus *b)
 {
 	if (b->legacy_io) {
-		class_device_remove_bin_file(&b->class_dev, b->legacy_io);
-		class_device_remove_bin_file(&b->class_dev, b->legacy_mem);
+		device_remove_bin_file(&b->dev, b->legacy_io);
+		device_remove_bin_file(&b->dev, b->legacy_mem);
 		kfree(b->legacy_io); /* both are allocated here */
 	}
 }
@@ -81,26 +82,27 @@ void pci_remove_legacy_files(struct pci_bus *bus) { return; }
 /*
  * PCI Bus Class Devices
  */
-static ssize_t pci_bus_show_cpuaffinity(struct class_device *class_dev,
+static ssize_t pci_bus_show_cpuaffinity(struct device *dev,
+					struct device_attribute *attr,
 					char *buf)
 {
 	int ret;
 	cpumask_t cpumask;
 
-	cpumask = pcibus_to_cpumask(to_pci_bus(class_dev));
+	cpumask = pcibus_to_cpumask(to_pci_bus(dev));
 	ret = cpumask_scnprintf(buf, PAGE_SIZE, cpumask);
 	if (ret < PAGE_SIZE)
 		buf[ret++] = '\n';
 	return ret;
 }
-CLASS_DEVICE_ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpuaffinity, NULL);
+DEVICE_ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpuaffinity, NULL);
 
 /*
  * PCI Bus Class
  */
-static void release_pcibus_dev(struct class_device *class_dev)
+static void release_pcibus_dev(struct device *dev)
 {
-	struct pci_bus *pci_bus = to_pci_bus(class_dev);
+	struct pci_bus *pci_bus = to_pci_bus(dev);
 
 	if (pci_bus->bridge)
 		put_device(pci_bus->bridge);
@@ -109,7 +111,7 @@ static void release_pcibus_dev(struct class_device *class_dev)
 
 static struct class pcibus_class = {
 	.name		= "pci_bus",
-	.release	= &release_pcibus_dev,
+	.dev_release	= &release_pcibus_dev,
 };
 
 static int __init pcibus_class_init(void)
@@ -392,7 +394,6 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
 {
 	struct pci_bus *child;
 	int i;
-	int retval;
 
 	/*
 	 * Allocate a new bus, and inherit stuff from the parent..
@@ -408,15 +409,12 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
 	child->bus_flags = parent->bus_flags;
 	child->bridge = get_device(&bridge->dev);
 
-	child->class_dev.class = &pcibus_class;
-	sprintf(child->class_dev.class_id, "%04x:%02x", pci_domain_nr(child), busnr);
-	retval = class_device_register(&child->class_dev);
-	if (retval)
-		goto error_register;
-	retval = class_device_create_file(&child->class_dev,
-					  &class_device_attr_cpuaffinity);
-	if (retval)
-		goto error_file_create;
+	/* initialize some portions of the bus device, but don't register it
+	 * now as the parent is not properly set up yet.  This device will get
+	 * registered later in pci_bus_add_devices()
+	 */
+	child->dev.class = &pcibus_class;
+	sprintf(child->dev.bus_id, "%04x:%02x", pci_domain_nr(child), busnr);
 
 	/*
 	 * Set up the primary, secondary and subordinate
@@ -434,12 +432,6 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
 	bridge->subordinate = child;
 
 	return child;
-
-error_file_create:
-	class_device_unregister(&child->class_dev);
-error_register:
-	kfree(child);
-	return NULL;
 }
 
 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)
@@ -471,8 +463,6 @@ static void pci_fixup_parent_subordinate_busnr(struct pci_bus *child, int max)
 	}
 }
 
-unsigned int pci_scan_child_bus(struct pci_bus *bus);
-
 /*
  * If it's a bridge, configure it and scan the bus behind it.
  * For CardBus bridges, we don't scan behind as the devices will
@@ -641,13 +631,13 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass
 		    (child->number > bus->subordinate) ||
 		    (child->number < bus->number) ||
 		    (child->subordinate < bus->number)) {
-			pr_debug("PCI: Bus #%02x (-#%02x) is %s"
+			pr_debug("PCI: Bus #%02x (-#%02x) is %s "
 				"hidden behind%s bridge #%02x (-#%02x)\n",
 				child->number, child->subordinate,
 				(bus->number > child->subordinate &&
 				 bus->subordinate < child->number) ?
-					"wholly " : " partially",
-				bus->self->transparent ? " transparent" : " ",
+					"wholly" : "partially",
+				bus->self->transparent ? " transparent" : "",
 				bus->number, bus->subordinate);
 		}
 		bus = bus->parent;
@@ -971,6 +961,7 @@ struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn)
 
 	return dev;
 }
+EXPORT_SYMBOL(pci_scan_single_device);
 
 /**
  * pci_scan_slot - scan a PCI slot on a bus for devices.
@@ -1011,6 +1002,10 @@ int pci_scan_slot(struct pci_bus *bus, int devfn)
 				break;
 		}
 	}
+
+	if (bus->self)
+		pcie_aspm_init_link_state(bus->self);
+
 	return nr;
 }
 
@@ -1103,32 +1098,27 @@ struct pci_bus * pci_create_bus(struct device *parent,
 		goto dev_reg_err;
 	b->bridge = get_device(dev);
 
-	b->class_dev.class = &pcibus_class;
-	sprintf(b->class_dev.class_id, "%04x:%02x", pci_domain_nr(b), bus);
-	error = class_device_register(&b->class_dev);
+	b->dev.class = &pcibus_class;
+	b->dev.parent = b->bridge;
+	sprintf(b->dev.bus_id, "%04x:%02x", pci_domain_nr(b), bus);
+	error = device_register(&b->dev);
 	if (error)
 		goto class_dev_reg_err;
-	error = class_device_create_file(&b->class_dev, &class_device_attr_cpuaffinity);
+	error = device_create_file(&b->dev, &dev_attr_cpuaffinity);
 	if (error)
-		goto class_dev_create_file_err;
+		goto dev_create_file_err;
 
 	/* Create legacy_io and legacy_mem files for this bus */
 	pci_create_legacy_files(b);
 
-	error = sysfs_create_link(&b->class_dev.kobj, &b->bridge->kobj, "bridge");
-	if (error)
-		goto sys_create_link_err;
-
 	b->number = b->secondary = bus;
 	b->resource[0] = &ioport_resource;
 	b->resource[1] = &iomem_resource;
 
 	return b;
 
-sys_create_link_err:
-	class_device_remove_file(&b->class_dev, &class_device_attr_cpuaffinity);
-class_dev_create_file_err:
-	class_device_unregister(&b->class_dev);
+dev_create_file_err:
+	device_unregister(&b->dev);
 class_dev_reg_err:
 	device_unregister(dev);
 dev_reg_err:
@@ -1140,7 +1130,6 @@ err_out:
 	kfree(b);
 	return NULL;
 }
-EXPORT_SYMBOL_GPL(pci_create_bus);
 
 struct pci_bus *pci_scan_bus_parented(struct device *parent,
 		int bus, struct pci_ops *ops, void *sysdata)
@@ -1159,7 +1148,6 @@ EXPORT_SYMBOL(pci_add_new_bus);
 EXPORT_SYMBOL(pci_do_scan_bus);
 EXPORT_SYMBOL(pci_scan_slot);
 EXPORT_SYMBOL(pci_scan_bridge);
-EXPORT_SYMBOL(pci_scan_single_device);
 EXPORT_SYMBOL_GPL(pci_scan_child_bus);
 #endif
 

drivers/pci/proc.c

@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/smp_lock.h>
 #include <linux/capability.h>
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
@@ -202,15 +203,18 @@ struct pci_filp_private {
 	int write_combine;
 };
 
-static int proc_bus_pci_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
+			       unsigned long arg)
 {
-	const struct proc_dir_entry *dp = PDE(inode);
+	const struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
 	struct pci_dev *dev = dp->data;
 #ifdef HAVE_PCI_MMAP
 	struct pci_filp_private *fpriv = file->private_data;
 #endif /* HAVE_PCI_MMAP */
 	int ret = 0;
 
+	lock_kernel();
+
 	switch (cmd) {
 	case PCIIOC_CONTROLLER:
 		ret = pci_domain_nr(dev->bus);
@@ -239,6 +243,7 @@ static int proc_bus_pci_ioctl(struct inode *inode, struct file *file, unsigned i
 		break;
 	};
 
+	unlock_kernel();
 	return ret;
 }
 
@@ -291,7 +296,7 @@ static const struct file_operations proc_bus_pci_operations = {
 	.llseek		= proc_bus_pci_lseek,
 	.read		= proc_bus_pci_read,
 	.write		= proc_bus_pci_write,
-	.ioctl		= proc_bus_pci_ioctl,
+	.unlocked_ioctl	= proc_bus_pci_ioctl,
 #ifdef HAVE_PCI_MMAP
 	.open		= proc_bus_pci_open,
 	.release	= proc_bus_pci_release,
@@ -370,7 +375,7 @@ static int show_device(struct seq_file *m, void *v)
 	return 0;
 }
 
-static struct seq_operations proc_bus_pci_devices_op = {
+static const struct seq_operations proc_bus_pci_devices_op = {
 	.start	= pci_seq_start,
 	.next	= pci_seq_next,
 	.stop	= pci_seq_stop,
@@ -480,7 +485,3 @@ static int __init pci_proc_init(void)
 
 __initcall(pci_proc_init);
 
-#ifdef CONFIG_HOTPLUG
-EXPORT_SYMBOL(pci_proc_detach_bus);
-#endif
-

drivers/pci/remove.c

@@ -1,5 +1,6 @@
 #include <linux/pci.h>
 #include <linux/module.h>
+#include <linux/aspm.h>
 #include "pci.h"
 
 static void pci_free_resources(struct pci_dev *dev)
@@ -30,6 +31,9 @@ static void pci_stop_dev(struct pci_dev *dev)
 		dev->global_list.next = dev->global_list.prev = NULL;
 		up_write(&pci_bus_sem);
 	}
+
+	if (dev->bus->self)
+		pcie_aspm_exit_link_state(dev);
 }
 
 static void pci_destroy_dev(struct pci_dev *dev)
@@ -74,10 +78,8 @@ void pci_remove_bus(struct pci_bus *pci_bus)
 	list_del(&pci_bus->node);
 	up_write(&pci_bus_sem);
 	pci_remove_legacy_files(pci_bus);
-	class_device_remove_file(&pci_bus->class_dev,
-		&class_device_attr_cpuaffinity);
-	sysfs_remove_link(&pci_bus->class_dev.kobj, "bridge");
-	class_device_unregister(&pci_bus->class_dev);
+	device_remove_file(&pci_bus->dev, &dev_attr_cpuaffinity);
+	device_unregister(&pci_bus->dev);
 }
 EXPORT_SYMBOL(pci_remove_bus);
 

drivers/pci/rom.c

@@ -162,6 +162,7 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size)
 	return rom;
 }
 
+#if 0
 /**
  * pci_map_rom_copy - map a PCI ROM to kernel space, create a copy
  * @pdev: pointer to pci device struct
@@ -196,6 +197,7 @@ void __iomem *pci_map_rom_copy(struct pci_dev *pdev, size_t *size)
 
 	return (void __iomem *)(unsigned long)res->start;
 }
+#endif  /*  0  */
 
 /**
  * pci_unmap_rom - unmap the ROM from kernel space
@@ -218,6 +220,7 @@ void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom)
 		pci_disable_rom(pdev);
 }
 
+#if 0
 /**
  * pci_remove_rom - disable the ROM and remove its sysfs attribute
  * @pdev: pointer to pci device struct
@@ -236,6 +239,7 @@ void pci_remove_rom(struct pci_dev *pdev)
 			    IORESOURCE_ROM_COPY)))
 		pci_disable_rom(pdev);
 }
+#endif  /*  0  */
 
 /**
  * pci_cleanup_rom - internal routine for freeing the ROM copy created
@@ -256,6 +260,4 @@ void pci_cleanup_rom(struct pci_dev *pdev)
 }
 
 EXPORT_SYMBOL(pci_map_rom);
-EXPORT_SYMBOL(pci_map_rom_copy);
 EXPORT_SYMBOL(pci_unmap_rom);
-EXPORT_SYMBOL(pci_remove_rom);

drivers/pci/setup-bus.c

@@ -89,8 +89,9 @@ void pci_setup_cardbus(struct pci_bus *bus)
 		 * The IO resource is allocated a range twice as large as it
 		 * would normally need.  This allows us to set both IO regs.
 		 */
-		printk("  IO window: %08lx-%08lx\n",
-			region.start, region.end);
+		printk(KERN_INFO "  IO window: 0x%08lx-0x%08lx\n",
+		       (unsigned long)region.start,
+		       (unsigned long)region.end);
 		pci_write_config_dword(bridge, PCI_CB_IO_BASE_0,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_IO_LIMIT_0,
@@ -99,8 +100,9 @@ void pci_setup_cardbus(struct pci_bus *bus)
 
 	pcibios_resource_to_bus(bridge, &region, bus->resource[1]);
 	if (bus->resource[1]->flags & IORESOURCE_IO) {
-		printk("  IO window: %08lx-%08lx\n",
-			region.start, region.end);
+		printk(KERN_INFO "  IO window: 0x%08lx-0x%08lx\n",
+		       (unsigned long)region.start,
+		       (unsigned long)region.end);
 		pci_write_config_dword(bridge, PCI_CB_IO_BASE_1,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_IO_LIMIT_1,
@@ -109,8 +111,9 @@ void pci_setup_cardbus(struct pci_bus *bus)
 
 	pcibios_resource_to_bus(bridge, &region, bus->resource[2]);
 	if (bus->resource[2]->flags & IORESOURCE_MEM) {
-		printk("  PREFETCH window: %08lx-%08lx\n",
-			region.start, region.end);
+		printk(KERN_INFO "  PREFETCH window: 0x%08lx-0x%08lx\n",
+		       (unsigned long)region.start,
+		       (unsigned long)region.end);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_BASE_0,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_LIMIT_0,
@@ -119,8 +122,9 @@ void pci_setup_cardbus(struct pci_bus *bus)
 
 	pcibios_resource_to_bus(bridge, &region, bus->resource[3]);
 	if (bus->resource[3]->flags & IORESOURCE_MEM) {
-		printk("  MEM window: %08lx-%08lx\n",
-			region.start, region.end);
+		printk(KERN_INFO "  MEM window: 0x%08lx-0x%08lx\n",
+		       (unsigned long)region.start,
+		       (unsigned long)region.end);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_BASE_1,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_LIMIT_1,
@@ -145,7 +149,7 @@ pci_setup_bridge(struct pci_bus *bus)
 {
 	struct pci_dev *bridge = bus->self;
 	struct pci_bus_region region;
-	u32 l, io_upper16;
+	u32 l, bu, lu, io_upper16;
 
 	DBG(KERN_INFO "PCI: Bridge: %s\n", pci_name(bridge));
 
@@ -159,7 +163,8 @@ pci_setup_bridge(struct pci_bus *bus)
 		/* Set up upper 16 bits of I/O base/limit. */
 		io_upper16 = (region.end & 0xffff0000) | (region.start >> 16);
 		DBG(KERN_INFO "  IO window: %04lx-%04lx\n",
-				region.start, region.end);
+		    (unsigned long)region.start,
+		    (unsigned long)region.end);
 	}
 	else {
 		/* Clear upper 16 bits of I/O base/limit. */
@@ -180,8 +185,9 @@ pci_setup_bridge(struct pci_bus *bus)
 	if (bus->resource[1]->flags & IORESOURCE_MEM) {
 		l = (region.start >> 16) & 0xfff0;
 		l |= region.end & 0xfff00000;
-		DBG(KERN_INFO "  MEM window: %08lx-%08lx\n",
-				region.start, region.end);
+		DBG(KERN_INFO "  MEM window: 0x%08lx-0x%08lx\n",
+		    (unsigned long)region.start,
+		    (unsigned long)region.end);
 	}
 	else {
 		l = 0x0000fff0;
@@ -195,12 +201,18 @@ pci_setup_bridge(struct pci_bus *bus)
 	pci_write_config_dword(bridge, PCI_PREF_LIMIT_UPPER32, 0);
 
 	/* Set up PREF base/limit. */
+	bu = lu = 0;
 	pcibios_resource_to_bus(bridge, &region, bus->resource[2]);
 	if (bus->resource[2]->flags & IORESOURCE_PREFETCH) {
 		l = (region.start >> 16) & 0xfff0;
 		l |= region.end & 0xfff00000;
-		DBG(KERN_INFO "  PREFETCH window: %08lx-%08lx\n",
-				region.start, region.end);
+#ifdef CONFIG_RESOURCES_64BIT
+		bu = region.start >> 32;
+		lu = region.end >> 32;
+#endif
+		DBG(KERN_INFO "  PREFETCH window: 0x%016llx-0x%016llx\n",
+		    (unsigned long long)region.start,
+		    (unsigned long long)region.end);
 	}
 	else {
 		l = 0x0000fff0;
@@ -208,8 +220,9 @@ pci_setup_bridge(struct pci_bus *bus)
 	}
 	pci_write_config_dword(bridge, PCI_PREF_MEMORY_BASE, l);
 
-	/* Clear out the upper 32 bits of PREF base. */
-	pci_write_config_dword(bridge, PCI_PREF_BASE_UPPER32, 0);
+	/* Set the upper 32 bits of PREF base & limit. */
+	pci_write_config_dword(bridge, PCI_PREF_BASE_UPPER32, bu);
+	pci_write_config_dword(bridge, PCI_PREF_LIMIT_UPPER32, lu);
 
 	pci_write_config_word(bridge, PCI_BRIDGE_CONTROL, bus->bridge_ctl);
 }
@@ -323,8 +336,8 @@ static void pbus_size_io(struct pci_bus *bus)
 static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long type)
 {
 	struct pci_dev *dev;
-	unsigned long min_align, align, size;
-	unsigned long aligns[12];	/* Alignments from 1Mb to 2Gb */
+	resource_size_t min_align, align, size;
+	resource_size_t aligns[12];	/* Alignments from 1Mb to 2Gb */
 	int order, max_order;
 	struct resource *b_res = find_free_bus_resource(bus, type);
 
@@ -340,7 +353,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long
 		
 		for (i = 0; i < PCI_NUM_RESOURCES; i++) {
 			struct resource *r = &dev->resource[i];
-			unsigned long r_size;
+			resource_size_t r_size;
 
 			if (r->parent || (r->flags & mask) != type)
 				continue;
@@ -350,10 +363,10 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long
 			order = __ffs(align) - 20;
 			if (order > 11) {
 				printk(KERN_WARNING "PCI: region %s/%d "
-				       "too large: %llx-%llx\n",
+				       "too large: 0x%016llx-0x%016llx\n",
 					pci_name(dev), i,
-					(unsigned long long)r->start,
-					(unsigned long long)r->end);
+				       (unsigned long long)r->start,
+				       (unsigned long long)r->end);
 				r->flags = 0;
 				continue;
 			}
@@ -372,8 +385,11 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long
 	align = 0;
 	min_align = 0;
 	for (order = 0; order <= max_order; order++) {
-		unsigned long align1 = 1UL << (order + 20);
-
+#ifdef CONFIG_RESOURCES_64BIT
+		resource_size_t align1 = 1ULL << (order + 20);
+#else
+		resource_size_t align1 = 1U << (order + 20);
+#endif
 		if (!align)
 			min_align = align1;
 		else if (ALIGN(align + min_align, min_align) < align1)

drivers/pci/setup-res.c

@@ -51,10 +51,12 @@ pci_update_resource(struct pci_dev *dev, struct resource *res, int resno)
 
 	pcibios_resource_to_bus(dev, &region, res);
 
-	pr_debug("  got res [%llx:%llx] bus [%lx:%lx] flags %lx for "
+	pr_debug("  got res [%llx:%llx] bus [%llx:%llx] flags %lx for "
 		 "BAR %d of %s\n", (unsigned long long)res->start,
 		 (unsigned long long)res->end,
-		 region.start, region.end, res->flags, resno, pci_name(dev));
+		 (unsigned long long)region.start,
+		 (unsigned long long)region.end,
+		 (unsigned long)res->flags, resno, pci_name(dev));
 
 	new = region.start | (res->flags & PCI_REGION_FLAG_MASK);
 	if (res->flags & IORESOURCE_IO)
@@ -125,7 +127,6 @@ int pci_claim_resource(struct pci_dev *dev, int resource)
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(pci_claim_resource);
 
 int pci_assign_resource(struct pci_dev *dev, int resno)
 {

drivers/pci/syscall.c

@@ -34,7 +34,6 @@ sys_pciconfig_read(unsigned long bus, unsigned long dfn,
 	if (!dev)
 		goto error;
 
-	lock_kernel();
 	switch (len) {
 	case 1:
 		cfg_ret = pci_user_read_config_byte(dev, off, &byte);
@@ -47,10 +46,8 @@ sys_pciconfig_read(unsigned long bus, unsigned long dfn,
 		break;
 	default:
 		err = -EINVAL;
-		unlock_kernel();
 		goto error;
 	};
-	unlock_kernel();
 
 	err = -EIO;
 	if (cfg_ret != PCIBIOS_SUCCESSFUL)
@@ -107,7 +104,6 @@ sys_pciconfig_write(unsigned long bus, unsigned long dfn,
 	if (!dev)
 		return -ENODEV;
 
-	lock_kernel();
 	switch(len) {
 	case 1:
 		err = get_user(byte, (u8 __user *)buf);
@@ -140,7 +136,6 @@ sys_pciconfig_write(unsigned long bus, unsigned long dfn,
 		err = -EINVAL;
 		break;
 	}
-	unlock_kernel();
 	pci_dev_put(dev);
 	return err;
 }

drivers/scsi/lpfc/lpfc_init.c

@@ -2296,10 +2296,9 @@ static pci_ers_result_t lpfc_io_slot_reset(struct pci_dev *pdev)
 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
 	struct lpfc_sli *psli = &phba->sli;
-	int bars = pci_select_bars(pdev, IORESOURCE_MEM);
 
 	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
-	if (pci_enable_device_bars(pdev, bars)) {
+	if (pci_enable_device_mem(pdev)) {
 		printk(KERN_ERR "lpfc: Cannot re-enable "
 			"PCI device after reset.\n");
 		return PCI_ERS_RESULT_DISCONNECT;

drivers/scsi/qla2xxx/qla_def.h

@@ -2268,6 +2268,7 @@ typedef struct scsi_qla_host {
 	spinlock_t		hardware_lock ____cacheline_aligned;
 
 	int		bars;
+	int		mem_only;
 	device_reg_t __iomem *iobase;		/* Base I/O address */
 	resource_size_t pio_address;
 #define MIN_IOBASE_LEN		0x100

drivers/scsi/qla2xxx/qla_os.c

@@ -1564,7 +1564,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	char pci_info[30];
 	char fw_str[30];
 	struct scsi_host_template *sht;
-	int bars;
+	int bars, mem_only = 0;
 
 	bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
 	sht = &qla2x00_driver_template;
@@ -1575,10 +1575,16 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	    pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532) {
 		bars = pci_select_bars(pdev, IORESOURCE_MEM);
 		sht = &qla24xx_driver_template;
+		mem_only = 1;
 	}
 
-	if (pci_enable_device_bars(pdev, bars))
-		goto probe_out;
+	if (mem_only) {
+		if (pci_enable_device_mem(pdev))
+			goto probe_out;
+	} else {
+		if (pci_enable_device(pdev))
+			goto probe_out;
+	}
 
 	if (pci_find_aer_capability(pdev))
 		if (pci_enable_pcie_error_reporting(pdev))
@@ -1601,6 +1607,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
 	ha->parent = NULL;
 	ha->bars = bars;
+	ha->mem_only = mem_only;
 
 	/* Set ISP-type information. */
 	qla2x00_set_isp_flags(ha);
@@ -2875,8 +2882,14 @@ qla2xxx_pci_slot_reset(struct pci_dev *pdev)
 {
 	pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
 	scsi_qla_host_t *ha = pci_get_drvdata(pdev);
+	int rc;
+
+	if (ha->mem_only)
+		rc = pci_enable_device_mem(pdev);
+	else
+		rc = pci_enable_device(pdev);
 
-	if (pci_enable_device_bars(pdev, ha->bars)) {
+	if (rc) {
 		qla_printk(KERN_WARNING, ha,
 		    "Can't re-enable PCI device after reset.\n");
 

drivers/usb/host/pci-quirks.c

@@ -190,9 +190,8 @@ static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
 			msleep(10);
 		}
 		if (wait_time <= 0)
-			printk(KERN_WARNING "%s %s: BIOS handoff "
-					"failed (BIOS bug ?) %08x\n",
-					pdev->dev.bus_id, "OHCI",
+			dev_warn(&pdev->dev, "OHCI: BIOS handoff failed"
+					" (BIOS bug?) %08x\n",
 					readl(base + OHCI_CONTROL));
 
 		/* reset controller, preserving RWC */
@@ -243,8 +242,7 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
 		switch (cap & 0xff) {
 		case 1:			/* BIOS/SMM/... handoff support */
 			if ((cap & EHCI_USBLEGSUP_BIOS)) {
-				pr_debug("%s %s: BIOS handoff\n",
-						pdev->dev.bus_id, "EHCI");
+				dev_dbg(&pdev->dev, "EHCI: BIOS handoff\n");
 
 #if 0
 /* aleksey_gorelov@phoenix.com reports that some systems need SMI forced on,
@@ -285,9 +283,8 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
 				/* well, possibly buggy BIOS... try to shut
 				 * it down, and hope nothing goes too wrong
 				 */
-				printk(KERN_WARNING "%s %s: BIOS handoff "
-						"failed (BIOS bug ?) %08x\n",
-					pdev->dev.bus_id, "EHCI", cap);
+				dev_warn(&pdev->dev, "EHCI: BIOS handoff failed"
+						" (BIOS bug?) %08x\n", cap);
 				pci_write_config_byte(pdev, offset + 2, 0);
 			}
 
@@ -306,17 +303,14 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
 			cap = 0;
 			/* FALLTHROUGH */
 		default:
-			printk(KERN_WARNING "%s %s: unrecognized "
-					"capability %02x\n",
-					pdev->dev.bus_id, "EHCI",
-					cap & 0xff);
+			dev_warn(&pdev->dev, "EHCI: unrecognized capability "
+					"%02x\n", cap & 0xff);
 			break;
 		}
 		offset = (cap >> 8) & 0xff;
 	}
 	if (!count)
-		printk(KERN_DEBUG "%s %s: capability loop?\n",
-				pdev->dev.bus_id, "EHCI");
+		dev_printk(KERN_DEBUG, &pdev->dev, "EHCI: capability loop?\n");
 
 	/*
 	 * halt EHCI & disable its interrupts in any case

include/linux/aspm.h

@@ -0,0 +1,44 @@
+/*
+ *	aspm.h
+ *
+ *	PCI Express ASPM defines and function prototypes
+ *
+ *	Copyright (C) 2007 Intel Corp.
+ *		Zhang Yanmin (yanmin.zhang@intel.com)
+ *		Shaohua Li (shaohua.li@intel.com)
+ *
+ *	For more information, please consult the following manuals (look at
+ *	http://www.pcisig.com/ for how to get them):
+ *
+ *	PCI Express Specification
+ */
+
+#ifndef LINUX_ASPM_H
+#define LINUX_ASPM_H
+
+#include <linux/pci.h>
+
+#define PCIE_LINK_STATE_L0S	1
+#define PCIE_LINK_STATE_L1	2
+#define PCIE_LINK_STATE_CLKPM	4
+
+#ifdef CONFIG_PCIEASPM
+extern void pcie_aspm_init_link_state(struct pci_dev *pdev);
+extern void pcie_aspm_exit_link_state(struct pci_dev *pdev);
+extern void pcie_aspm_pm_state_change(struct pci_dev *pdev);
+extern void pci_disable_link_state(struct pci_dev *pdev, int state);
+#else
+#define pcie_aspm_init_link_state(pdev)		do {} while (0)
+#define pcie_aspm_exit_link_state(pdev)		do {} while (0)
+#define pcie_aspm_pm_state_change(pdev)		do {} while (0)
+#define pci_disable_link_state(pdev, state)	do {} while (0)
+#endif
+
+#ifdef CONFIG_PCIEASPM_DEBUG /* this depends on CONFIG_PCIEASPM */
+extern void pcie_aspm_create_sysfs_dev_files(struct pci_dev *pdev);
+extern void pcie_aspm_remove_sysfs_dev_files(struct pci_dev *pdev);
+#else
+#define pcie_aspm_create_sysfs_dev_files(pdev)	do {} while (0)
+#define pcie_aspm_remove_sysfs_dev_files(pdev)	do {} while (0)
+#endif
+#endif /* LINUX_ASPM_H */

include/linux/pci-acpi.h

@@ -48,7 +48,15 @@
 
 #ifdef CONFIG_ACPI
 extern acpi_status pci_osc_control_set(acpi_handle handle, u32 flags);
-extern acpi_status pci_osc_support_set(u32 flags);
+extern acpi_status __pci_osc_support_set(u32 flags, const char *hid);
+static inline acpi_status pci_osc_support_set(u32 flags)
+{
+	return __pci_osc_support_set(flags, PCI_ROOT_HID_STRING);
+}
+static inline acpi_status pcie_osc_support_set(u32 flags)
+{
+	return __pci_osc_support_set(flags, PCI_EXPRESS_ROOT_HID_STRING);
+}
 #else
 #if !defined(AE_ERROR)
 typedef u32 		acpi_status;
@@ -57,6 +65,7 @@ typedef u32 		acpi_status;
 static inline acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
 {return AE_ERROR;}
 static inline acpi_status pci_osc_support_set(u32 flags) {return AE_ERROR;} 
+static inline acpi_status pcie_osc_support_set(u32 flags) {return AE_ERROR;}
 #endif
 
 #endif	/* _PCI_ACPI_H_ */

include/linux/pci.h

@@ -28,7 +28,7 @@
  *	7:3 = slot
  *	2:0 = function
  */
-#define PCI_DEVFN(slot,func)	((((slot) & 0x1f) << 3) | ((func) & 0x07))
+#define PCI_DEVFN(slot, func)	((((slot) & 0x1f) << 3) | ((func) & 0x07))
 #define PCI_SLOT(devfn)		(((devfn) >> 3) & 0x1f)
 #define PCI_FUNC(devfn)		((devfn) & 0x07)
 
@@ -66,7 +66,6 @@ enum pci_mmap_state {
 #define PCI_DMA_FROMDEVICE	2
 #define PCI_DMA_NONE		3
 
-#define DEVICE_COUNT_COMPATIBLE	4
 #define DEVICE_COUNT_RESOURCE	12
 
 typedef int __bitwise pci_power_t;
@@ -129,6 +128,7 @@ struct pci_cap_saved_state {
 	u32 data[0];
 };
 
+struct pcie_link_state;
 /*
  * The pci_dev structure is used to describe PCI devices.
  */
@@ -164,13 +164,13 @@ struct pci_dev {
 					   this is D0-D3, D0 being fully functional,
 					   and D3 being off. */
 
+#ifdef CONFIG_PCIEASPM
+	struct pcie_link_state	*link_state;	/* ASPM link state. */
+#endif
+
 	pci_channel_state_t error_state;	/* current connectivity state */
 	struct	device	dev;		/* Generic device interface */
 
-	/* device is compatible with these IDs */
-	unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE];
-	unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE];
-
 	int		cfg_size;	/* Size of configuration space */
 
 	/*
@@ -219,7 +219,7 @@ static inline int pci_channel_offline(struct pci_dev *pdev)
 }
 
 static inline struct pci_cap_saved_state *pci_find_saved_cap(
-	struct pci_dev *pci_dev,char cap)
+	struct pci_dev *pci_dev, char cap)
 {
 	struct pci_cap_saved_state *tmp;
 	struct hlist_node *pos;
@@ -278,13 +278,13 @@ struct pci_bus {
 	unsigned short  bridge_ctl;	/* manage NO_ISA/FBB/et al behaviors */
 	pci_bus_flags_t bus_flags;	/* Inherited by child busses */
 	struct device		*bridge;
-	struct class_device	class_dev;
+	struct device		dev;
 	struct bin_attribute	*legacy_io; /* legacy I/O for this bus */
 	struct bin_attribute	*legacy_mem; /* legacy mem */
 };
 
 #define pci_bus_b(n)	list_entry(n, struct pci_bus, node)
-#define to_pci_bus(n)	container_of(n, struct pci_bus, class_dev)
+#define to_pci_bus(n)	container_of(n, struct pci_bus, dev)
 
 /*
  * Error values that may be returned by PCI functions.
@@ -314,8 +314,8 @@ struct pci_raw_ops {
 extern struct pci_raw_ops *raw_pci_ops;
 
 struct pci_bus_region {
-	unsigned long start;
-	unsigned long end;
+	resource_size_t start;
+	resource_size_t end;
 };
 
 struct pci_dynids {
@@ -351,11 +351,10 @@ enum pci_ers_result {
 };
 
 /* PCI bus error event callbacks */
-struct pci_error_handlers
-{
+struct pci_error_handlers {
 	/* PCI bus error detected on this device */
 	pci_ers_result_t (*error_detected)(struct pci_dev *dev,
-	                      enum pci_channel_state error);
+					   enum pci_channel_state error);
 
 	/* MMIO has been re-enabled, but not DMA */
 	pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
@@ -390,7 +389,7 @@ struct pci_driver {
 	struct pci_dynids dynids;
 };
 
-#define	to_pci_driver(drv) container_of(drv,struct pci_driver, driver)
+#define	to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
 
 /**
  * PCI_DEVICE - macro used to describe a specific pci device
@@ -448,7 +447,7 @@ extern int no_pci_devices(void);
 
 void pcibios_fixup_bus(struct pci_bus *);
 int __must_check pcibios_enable_device(struct pci_dev *, int mask);
-char *pcibios_setup (char *str);
+char *pcibios_setup(char *str);
 
 /* Used only when drivers/pci/setup.c is used */
 void pcibios_align_resource(void *, struct resource *, resource_size_t,
@@ -459,8 +458,10 @@ void pcibios_update_irq(struct pci_dev *, int irq);
 
 extern struct pci_bus *pci_find_bus(int domain, int busnr);
 void pci_bus_add_devices(struct pci_bus *bus);
-struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
-static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata)
+struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
+				      struct pci_ops *ops, void *sysdata);
+static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops,
+					   void *sysdata)
 {
 	struct pci_bus *root_bus;
 	root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
@@ -468,15 +469,18 @@ static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *s
 		pci_bus_add_devices(root_bus);
 	return root_bus;
 }
-struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
-struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr);
+struct pci_bus *pci_create_bus(struct device *parent, int bus,
+			       struct pci_ops *ops, void *sysdata);
+struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
+				int busnr);
 int pci_scan_slot(struct pci_bus *bus, int devfn);
-struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn);
+struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
 unsigned int pci_scan_child_bus(struct pci_bus *bus);
 int __must_check pci_bus_add_device(struct pci_dev *dev);
 void pci_read_bridge_bases(struct pci_bus *child);
-struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res);
+struct resource *pci_find_parent_resource(const struct pci_dev *dev,
+					  struct resource *res);
 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
 extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
 extern void pci_dev_put(struct pci_dev *dev);
@@ -489,15 +493,19 @@ extern void pci_sort_breadthfirst(void);
 /* Generic PCI functions exported to card drivers */
 
 #ifdef CONFIG_PCI_LEGACY
-struct pci_dev __deprecated *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from);
-struct pci_dev __deprecated *pci_find_slot (unsigned int bus, unsigned int devfn);
+struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
+					     unsigned int device,
+					     const struct pci_dev *from);
+struct pci_dev __deprecated *pci_find_slot(unsigned int bus,
+					   unsigned int devfn);
 #endif /* CONFIG_PCI_LEGACY */
 
-int pci_find_capability (struct pci_dev *dev, int cap);
-int pci_find_next_capability (struct pci_dev *dev, u8 pos, int cap);
-int pci_find_ext_capability (struct pci_dev *dev, int cap);
-int pci_find_ht_capability (struct pci_dev *dev, int ht_cap);
-int pci_find_next_ht_capability (struct pci_dev *dev, int pos, int ht_cap);
+int pci_find_capability(struct pci_dev *dev, int cap);
+int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
+int pci_find_ext_capability(struct pci_dev *dev, int cap);
+int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
+int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
+void pcie_wait_pending_transaction(struct pci_dev *dev);
 struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
 
 struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
@@ -505,49 +513,58 @@ struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
 struct pci_dev *pci_get_device_reverse(unsigned int vendor, unsigned int device,
 				struct pci_dev *from);
 
-struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
+struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
 				unsigned int ss_vendor, unsigned int ss_device,
 				struct pci_dev *from);
-struct pci_dev *pci_get_slot (struct pci_bus *bus, unsigned int devfn);
-struct pci_dev *pci_get_bus_and_slot (unsigned int bus, unsigned int devfn);
-struct pci_dev *pci_get_class (unsigned int class, struct pci_dev *from);
+struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
+struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);
+struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
 int pci_dev_present(const struct pci_device_id *ids);
 const struct pci_device_id *pci_find_present(const struct pci_device_id *ids);
 
-int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val);
-int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val);
-int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val);
-int pci_bus_write_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 val);
-int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val);
-int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val);
+int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
+			     int where, u8 *val);
+int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
+			     int where, u16 *val);
+int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
+			      int where, u32 *val);
+int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
+			      int where, u8 val);
+int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
+			      int where, u16 val);
+int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
+			       int where, u32 val);
 
 static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
 {
-	return pci_bus_read_config_byte (dev->bus, dev->devfn, where, val);
+	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
 }
 static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
 {
-	return pci_bus_read_config_word (dev->bus, dev->devfn, where, val);
+	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
 }
-static inline int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val)
+static inline int pci_read_config_dword(struct pci_dev *dev, int where,
+					u32 *val)
 {
-	return pci_bus_read_config_dword (dev->bus, dev->devfn, where, val);
+	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
 }
 static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
 {
-	return pci_bus_write_config_byte (dev->bus, dev->devfn, where, val);
+	return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
 }
 static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
 {
-	return pci_bus_write_config_word (dev->bus, dev->devfn, where, val);
+	return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
 }
-static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val)
+static inline int pci_write_config_dword(struct pci_dev *dev, int where,
+					 u32 val)
 {
-	return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val);
+	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
 }
 
 int __must_check pci_enable_device(struct pci_dev *dev);
-int __must_check pci_enable_device_bars(struct pci_dev *dev, int mask);
+int __must_check pci_enable_device_io(struct pci_dev *dev);
+int __must_check pci_enable_device_mem(struct pci_dev *dev);
 int __must_check pci_reenable_device(struct pci_dev *);
 int __must_check pcim_enable_device(struct pci_dev *pdev);
 void pcim_pin_device(struct pci_dev *pdev);
@@ -576,14 +593,11 @@ int pcie_set_readrq(struct pci_dev *dev, int rq);
 void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno);
 int __must_check pci_assign_resource(struct pci_dev *dev, int i);
 int __must_check pci_assign_resource_fixed(struct pci_dev *dev, int i);
-void pci_restore_bars(struct pci_dev *dev);
 int pci_select_bars(struct pci_dev *dev, unsigned long flags);
 
 /* ROM control related routines */
 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
-void __iomem __must_check *pci_map_rom_copy(struct pci_dev *pdev, size_t *size);
 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
-void pci_remove_rom(struct pci_dev *pdev);
 size_t pci_get_rom_size(void __iomem *rom, size_t size);
 
 /* Power management related routines */
@@ -594,7 +608,7 @@ pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
 
 /* Functions for PCI Hotplug drivers to use */
-int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
+int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
 
 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
 void pci_bus_assign_resources(struct pci_bus *bus);
@@ -631,16 +645,18 @@ static inline int __must_check pci_register_driver(struct pci_driver *driver)
 	return __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME);
 }
 
-void pci_unregister_driver(struct pci_driver *);
-void pci_remove_behind_bridge(struct pci_dev *);
-struct pci_driver *pci_dev_driver(const struct pci_dev *);
-const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev);
-int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass);
+void pci_unregister_driver(struct pci_driver *dev);
+void pci_remove_behind_bridge(struct pci_dev *dev);
+struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
+const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
+					 struct pci_dev *dev);
+int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
+		    int pass);
 
 void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
 		  void *userdata);
 int pci_cfg_space_size(struct pci_dev *dev);
-unsigned char pci_bus_max_busnr(struct pci_bus* bus);
+unsigned char pci_bus_max_busnr(struct pci_bus *bus);
 
 /* kmem_cache style wrapper around pci_alloc_consistent() */
 
@@ -669,19 +685,36 @@ struct msix_entry {
 
 
 #ifndef CONFIG_PCI_MSI
-static inline int pci_enable_msi(struct pci_dev *dev) {return -1;}
-static inline void pci_disable_msi(struct pci_dev *dev) {}
-static inline int pci_enable_msix(struct pci_dev* dev,
-	struct msix_entry *entries, int nvec) {return -1;}
-static inline void pci_disable_msix(struct pci_dev *dev) {}
-static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) {}
+static inline int pci_enable_msi(struct pci_dev *dev)
+{
+	return -1;
+}
+
+static inline void pci_disable_msi(struct pci_dev *dev)
+{ }
+
+static inline int pci_enable_msix(struct pci_dev *dev,
+				  struct msix_entry *entries, int nvec)
+{
+	return -1;
+}
+
+static inline void pci_disable_msix(struct pci_dev *dev)
+{ }
+
+static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev)
+{ }
+
+static inline void pci_restore_msi_state(struct pci_dev *dev)
+{ }
 #else
 extern int pci_enable_msi(struct pci_dev *dev);
 extern void pci_disable_msi(struct pci_dev *dev);
-extern int pci_enable_msix(struct pci_dev* dev,
+extern int pci_enable_msix(struct pci_dev *dev,
 	struct msix_entry *entries, int nvec);
 extern void pci_disable_msix(struct pci_dev *dev);
 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
+extern void pci_restore_msi_state(struct pci_dev *dev);
 #endif
 
 #ifdef CONFIG_HT_IRQ
@@ -702,7 +735,11 @@ extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
 extern int pci_domains_supported;
 #else
 enum { pci_domains_supported = 0 };
-static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
+static inline int pci_domain_nr(struct pci_bus *bus)
+{
+	return 0;
+}
+
 static inline int pci_proc_domain(struct pci_bus *bus)
 {
 	return 0;
@@ -716,67 +753,161 @@ static inline int pci_proc_domain(struct pci_bus *bus)
  *  these as simple inline functions to avoid hair in drivers.
  */
 
-#define _PCI_NOP(o,s,t) \
-	static inline int pci_##o##_config_##s (struct pci_dev *dev, int where, t val) \
+#define _PCI_NOP(o, s, t) \
+	static inline int pci_##o##_config_##s(struct pci_dev *dev, \
+						int where, t val) \
 		{ return PCIBIOS_FUNC_NOT_SUPPORTED; }
-#define _PCI_NOP_ALL(o,x)	_PCI_NOP(o,byte,u8 x) \
-				_PCI_NOP(o,word,u16 x) \
-				_PCI_NOP(o,dword,u32 x)
+
+#define _PCI_NOP_ALL(o, x)	_PCI_NOP(o, byte, u8 x) \
+				_PCI_NOP(o, word, u16 x) \
+				_PCI_NOP(o, dword, u32 x)
 _PCI_NOP_ALL(read, *)
 _PCI_NOP_ALL(write,)
 
-static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from)
-{ return NULL; }
+static inline struct pci_dev *pci_find_device(unsigned int vendor,
+					      unsigned int device,
+					      const struct pci_dev *from)
+{
+	return NULL;
+}
 
-static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn)
-{ return NULL; }
+static inline struct pci_dev *pci_find_slot(unsigned int bus,
+					    unsigned int devfn)
+{
+	return NULL;
+}
 
 static inline struct pci_dev *pci_get_device(unsigned int vendor,
-				unsigned int device, struct pci_dev *from)
-{ return NULL; }
+					     unsigned int device,
+					     struct pci_dev *from)
+{
+	return NULL;
+}
 
 static inline struct pci_dev *pci_get_device_reverse(unsigned int vendor,
-				unsigned int device, struct pci_dev *from)
-{ return NULL; }
+						     unsigned int device,
+						     struct pci_dev *from)
+{
+	return NULL;
+}
 
-static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
-unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from)
-{ return NULL; }
+static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
+					     unsigned int device,
+					     unsigned int ss_vendor,
+					     unsigned int ss_device,
+					     struct pci_dev *from)
+{
+	return NULL;
+}
 
-static inline struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
-{ return NULL; }
+static inline struct pci_dev *pci_get_class(unsigned int class,
+					    struct pci_dev *from)
+{
+	return NULL;
+}
 
 #define pci_dev_present(ids)	(0)
 #define no_pci_devices()	(1)
 #define pci_find_present(ids)	(NULL)
 #define pci_dev_put(dev)	do { } while (0)
 
-static inline void pci_set_master(struct pci_dev *dev) { }
-static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
-static inline void pci_disable_device(struct pci_dev *dev) { }
-static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; }
-static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;}
-static inline int __pci_register_driver(struct pci_driver *drv, struct module *owner) { return 0;}
-static inline int pci_register_driver(struct pci_driver *drv) { return 0;}
-static inline void pci_unregister_driver(struct pci_driver *drv) { }
-static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; }
-static inline int pci_find_next_capability (struct pci_dev *dev, u8 post, int cap) { return 0; }
-static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; }
+static inline void pci_set_master(struct pci_dev *dev)
+{ }
+
+static inline int pci_enable_device(struct pci_dev *dev)
+{
+	return -EIO;
+}
+
+static inline void pci_disable_device(struct pci_dev *dev)
+{ }
+
+static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
+{
+	return -EIO;
+}
+
+static inline int pci_assign_resource(struct pci_dev *dev, int i)
+{
+	return -EBUSY;
+}
+
+static inline int __pci_register_driver(struct pci_driver *drv,
+					struct module *owner)
+{
+	return 0;
+}
+
+static inline int pci_register_driver(struct pci_driver *drv)
+{
+	return 0;
+}
+
+static inline void pci_unregister_driver(struct pci_driver *drv)
+{ }
+
+static inline int pci_find_capability(struct pci_dev *dev, int cap)
+{
+	return 0;
+}
+
+static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
+					   int cap)
+{
+	return 0;
+}
+
+static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
+{
+	return 0;
+}
+
+static inline void pcie_wait_pending_transaction(struct pci_dev *dev)
+{ }
 
 /* Power management related routines */
-static inline int pci_save_state(struct pci_dev *dev) { return 0; }
-static inline int pci_restore_state(struct pci_dev *dev) { return 0; }
-static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; }
-static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; }
-static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; }
+static inline int pci_save_state(struct pci_dev *dev)
+{
+	return 0;
+}
+
+static inline int pci_restore_state(struct pci_dev *dev)
+{
+	return 0;
+}
+
+static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
+{
+	return 0;
+}
+
+static inline pci_power_t pci_choose_state(struct pci_dev *dev,
+					   pm_message_t state)
+{
+	return PCI_D0;
+}
+
+static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
+				  int enable)
+{
+	return 0;
+}
+
+static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
+{
+	return -EIO;
+}
 
-static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) { return -EIO; }
-static inline void pci_release_regions(struct pci_dev *dev) { }
+static inline void pci_release_regions(struct pci_dev *dev)
+{ }
 
 #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
 
-static inline void pci_block_user_cfg_access(struct pci_dev *dev) { }
-static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) { }
+static inline void pci_block_user_cfg_access(struct pci_dev *dev)
+{ }
+
+static inline void pci_unblock_user_cfg_access(struct pci_dev *dev)
+{ }
 
 static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
 { return NULL; }
@@ -797,27 +928,27 @@ static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
 
 /* these helpers provide future and backwards compatibility
  * for accessing popular PCI BAR info */
-#define pci_resource_start(dev,bar)   ((dev)->resource[(bar)].start)
-#define pci_resource_end(dev,bar)     ((dev)->resource[(bar)].end)
-#define pci_resource_flags(dev,bar)   ((dev)->resource[(bar)].flags)
+#define pci_resource_start(dev, bar)	((dev)->resource[(bar)].start)
+#define pci_resource_end(dev, bar)	((dev)->resource[(bar)].end)
+#define pci_resource_flags(dev, bar)	((dev)->resource[(bar)].flags)
 #define pci_resource_len(dev,bar) \
-	((pci_resource_start((dev),(bar)) == 0 &&	\
-	  pci_resource_end((dev),(bar)) ==		\
-	  pci_resource_start((dev),(bar))) ? 0 :	\
-	  						\
-	 (pci_resource_end((dev),(bar)) -		\
-	  pci_resource_start((dev),(bar)) + 1))
+	((pci_resource_start((dev), (bar)) == 0 &&	\
+	  pci_resource_end((dev), (bar)) ==		\
+	  pci_resource_start((dev), (bar))) ? 0 :	\
+							\
+	 (pci_resource_end((dev), (bar)) -		\
+	  pci_resource_start((dev), (bar)) + 1))
 
 /* Similar to the helpers above, these manipulate per-pci_dev
  * driver-specific data.  They are really just a wrapper around
  * the generic device structure functions of these calls.
  */
-static inline void *pci_get_drvdata (struct pci_dev *pdev)
+static inline void *pci_get_drvdata(struct pci_dev *pdev)
 {
 	return dev_get_drvdata(&pdev->dev);
 }
 
-static inline void pci_set_drvdata (struct pci_dev *pdev, void *data)
+static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
 {
 	dev_set_drvdata(&pdev->dev, data);
 }
@@ -836,7 +967,7 @@ static inline char *pci_name(struct pci_dev *pdev)
  */
 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
-                const struct resource *rsrc, resource_size_t *start,
+		const struct resource *rsrc, resource_size_t *start,
 		resource_size_t *end)
 {
 	*start = rsrc->start;
@@ -888,9 +1019,9 @@ enum pci_fixup_pass {
 
 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
 
-void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
+void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
-void __iomem * const * pcim_iomap_table(struct pci_dev *pdev);
+void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
 int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
 void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
 

include/linux/pci_regs.h

@@ -395,9 +395,17 @@
 #define  PCI_EXP_DEVSTA_AUXPD	0x10	/* AUX Power Detected */
 #define  PCI_EXP_DEVSTA_TRPND	0x20	/* Transactions Pending */
 #define PCI_EXP_LNKCAP		12	/* Link Capabilities */
+#define  PCI_EXP_LNKCAP_ASPMS	0xc00	/* ASPM Support */
+#define  PCI_EXP_LNKCAP_L0SEL	0x7000	/* L0s Exit Latency */
+#define  PCI_EXP_LNKCAP_L1EL	0x38000	/* L1 Exit Latency */
+#define  PCI_EXP_LNKCAP_CLKPM	0x40000	/* L1 Clock Power Management */
 #define PCI_EXP_LNKCTL		16	/* Link Control */
+#define  PCI_EXP_LNKCTL_RL	0x20	/* Retrain Link */
+#define  PCI_EXP_LNKCTL_CCC	0x40	/* Common Clock COnfiguration */
 #define  PCI_EXP_LNKCTL_CLKREQ_EN 0x100	/* Enable clkreq */
 #define PCI_EXP_LNKSTA		18	/* Link Status */
+#define  PCI_EXP_LNKSTA_LT	0x800	/* Link Training */
+#define  PCI_EXP_LNKSTA_SLC	0x1000	/* Slot Clock Configuration */
 #define PCI_EXP_SLTCAP		20	/* Slot Capabilities */
 #define PCI_EXP_SLTCTL		24	/* Slot Control */
 #define PCI_EXP_SLTSTA		26	/* Slot Status */