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

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (37 commits)
  PCI: merge almost all of pci_32.h and pci_64.h together
  PCI: X86: Introduce and enable PCI domain support
  PCI: Add 'nodomains' boot option, and pci_domains_supported global
  PCI: modify PCI bridge control ISA flag for clarity
  PCI: use _CRS for PCI resource allocation
  PCI: avoid P2P prefetch window for expansion ROMs
  PCI: skip ISA ioresource alignment on some systems
  PCI: remove transparent bridge sizing
  pci: write file size to inode on proc bus file write
  pci: use size stored in proc_dir_entry for proc bus files
  pci: implement "pci=noaer"
  PCI: fix IDE legacy mode resources
  MSI: Use correct data offset for 32-bit MSI in read_msi_msg()
  PCI: Fix incorrect argument order to list_add_tail() in PCI dynamic ID code
  PCI: i386: Compaq EVO N800c needs PCI bus renumbering
  PCI: Remove no longer correct documentation regarding MSI vector assignment
  PCI: re-enable onboard sound on "MSI K8T Neo2-FIR"
  PCI: quirk_vt82c586_acpi: Omit reading PCI revision ID
  PCI: quirk amd_8131_mmrbc: Omit reading pci revision ID
  cpqphp: Use PCI_CLASS_REVISION instead of PCI_REVISION_ID for read
  ...

38 files changed, 654 insertions, 544 deletions

diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
index cc7a8c39fb6..b939ebb6287 100644
--- a/Documentation/DMA-API.txt
+++ b/Documentation/DMA-API.txt
@@ -68,6 +68,9 @@ size and dma_handle must all be the same as those passed into the
 consistent allocate.  cpu_addr must be the virtual address returned by
 the consistent allocate.
 
+Note that unlike their sibling allocation calls, these routines
+may only be called with IRQs enabled.
+
 
 Part Ib - Using small dma-coherent buffers
 ------------------------------------------
diff --git a/Documentation/MSI-HOWTO.txt b/Documentation/MSI-HOWTO.txt
index 0d8240774fc..a51f693c154 100644
--- a/Documentation/MSI-HOWTO.txt
+++ b/Documentation/MSI-HOWTO.txt
@@ -241,68 +241,7 @@ address space of the MSI-X table/MSI-X PBA. Otherwise, the PCI subsystem
 will fail enabling MSI-X on its hardware device when it calls the function
 pci_enable_msix().
 
-5.3.2 Handling MSI-X allocation
-
-Determining the number of MSI-X vectors allocated to a function is
-dependent on the number of MSI capable devices and MSI-X capable
-devices populated in the system. The policy of allocating MSI-X
-vectors to a function is defined as the following:
-
-#of MSI-X vectors allocated to a function = (x - y)/z where
-
-x = 	The number of available PCI vector resources by the time
-	the device driver calls pci_enable_msix(). The PCI vector
-	resources is the sum of the number of unassigned vectors
-	(new) and the number of released vectors when any MSI/MSI-X
-	device driver switches its hardware device back to a legacy
-	mode or is hot-removed.	The number of unassigned vectors
-	may exclude some vectors reserved, as defined in parameter
-	NR_HP_RESERVED_VECTORS, for the case where the system is
-	capable of supporting hot-add/hot-remove operations. Users
-	may change the value defined in NR_HR_RESERVED_VECTORS to
-	meet their specific needs.
-
-y =	The number of MSI capable devices populated in the system.
-	This policy ensures that each MSI capable device has its
-	vector reserved to avoid the case where some MSI-X capable
-	drivers may attempt to claim all available vector resources.
-
-z =	The number of MSI-X capable devices populated in the system.
-	This policy ensures that maximum (x - y) is distributed
-	evenly among MSI-X capable devices.
-
-Note that the PCI subsystem scans y and z during a bus enumeration.
-When the PCI subsystem completes configuring MSI/MSI-X capability
-structure of a device as requested by its device driver, y/z is
-decremented accordingly.
-
-5.3.3 Handling MSI-X shortages
-
-For the case where fewer MSI-X vectors are allocated to a function
-than requested, the function pci_enable_msix() will return the
-maximum number of MSI-X vectors available to the caller. A device
-driver may re-send its request with fewer or equal vectors indicated
-in the return. For example, if a device driver requests 5 vectors, but
-the number of available vectors is 3 vectors, a value of 3 will be
-returned as a result of pci_enable_msix() call. A function could be
-designed for its driver to use only 3 MSI-X table entries as
-different combinations as ABC--, A-B-C, A--CB, etc. Note that this
-patch does not support multiple entries with the same vector. Such
-attempt by a device driver to use 5 MSI-X table entries with 3 vectors
-as ABBCC, AABCC, BCCBA, etc will result as a failure by the function
-pci_enable_msix(). Below are the reasons why supporting multiple
-entries with the same vector is an undesirable solution.
-
-	- The PCI subsystem cannot determine the entry that
-	  generated the message to mask/unmask MSI while handling
-	  software driver ISR. Attempting to walk through all MSI-X
-	  table entries (2048 max) to mask/unmask any match vector
-	  is an undesirable solution.
-
-	- Walking through all MSI-X table entries (2048 max) to handle
-	  SMP affinity of any match vector is an undesirable solution.
-
-5.3.4 API pci_enable_msix
+5.3.2 API pci_enable_msix
 
 int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec)
 
@@ -339,7 +278,7 @@ a failure. This failure may be a result of duplicate entries
 specified in second argument, or a result of no available vector,
 or a result of failing to initialize MSI-X table entries.
 
-5.3.5 API pci_disable_msix
+5.3.3 API pci_disable_msix
 
 void pci_disable_msix(struct pci_dev *dev)
 
@@ -349,7 +288,7 @@ always call free_irq() on all MSI-X vectors it has done request_irq()
 on before calling this API. Failure to do so results in a BUG_ON() and
 a device will be left with MSI-X enabled and leaks its vectors.
 
-5.3.6 MSI-X mode vs. legacy mode diagram
+5.3.4 MSI-X mode vs. legacy mode diagram
 
 The below diagram shows the events which switch the interrupt
 mode on the MSI-X capable device function between MSI-X mode and
@@ -407,7 +346,7 @@ between MSI mod MSI-X mode during a run-time.
 MSI/MSI-X support requires support from both system hardware and
 individual hardware device functions.
 
-5.5.1 System hardware support
+5.5.1 Required x86 hardware support
 
 Since the target of MSI address is the local APIC CPU, enabling
 MSI/MSI-X support in the Linux kernel is dependent on whether existing
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 912c57c2334..9cbc82e37ed 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -68,6 +68,7 @@ parameter is applicable:
 	PARIDE	The ParIDE (parallel port IDE) subsystem is enabled.
 	PARISC	The PA-RISC architecture is enabled.
 	PCI	PCI bus support is enabled.
+	PCIE	PCI Express support is enabled.
 	PCMCIA	The PCMCIA subsystem is enabled.
 	PNP	Plug & Play support is enabled.
 	PPC	PowerPC architecture is enabled.
@@ -1277,6 +1278,11 @@ and is between 256 and 4096 characters. It is defined in the file
 				Mechanism 1.
 		conf2		[X86-32] Force use of PCI Configuration
 				Mechanism 2.
+		noaer		[PCIE] If the PCIEAER kernel config parameter is
+				enabled, this kernel boot option can be used to
+				disable the use of PCIE advanced error reporting.
+		nodomains	[PCI] Disable support for multiple PCI
+				root domains (aka PCI segments, in ACPI-speak).
 		nommconf	[X86-32,X86_64] Disable use of MMCONFIG for PCI
 				Configuration
 		nomsi		[MSI] If the PCI_MSI kernel config parameter is
@@ -1321,6 +1327,8 @@ and is between 256 and 4096 characters. It is defined in the file
 				IRQ routing is enabled.
 		noacpi		[X86-32] Do not use ACPI for IRQ routing
 				or for PCI scanning.
+		use_crs		[X86-32] Use _CRS for PCI resource
+				allocation.
 		routeirq	Do IRQ routing for all PCI devices.
 				This is normally done in pci_enable_device(),
 				so this option is a temporary workaround
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 6bbbc2755e4..f1486f8a3e6 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -1137,6 +1137,11 @@ config PCI_MMCONFIG
 	depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
 	default y
 
+config PCI_DOMAINS
+	bool
+	depends on PCI
+	default y
+
 source "drivers/pci/pcie/Kconfig"
 
 source "drivers/pci/Kconfig"
diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c
index 048f09b6255..0aae2f3847a 100644
--- a/arch/x86/kernel/pci-dma_32.c
+++ b/arch/x86/kernel/pci-dma_32.c
@@ -63,7 +63,8 @@ void dma_free_coherent(struct device *dev, size_t size,
 {
 	struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;
 	int order = get_order(size);
-	
+
+	WARN_ON(irqs_disabled());	/* for portability */
 	if (mem && vaddr >= mem->virt_base && vaddr < (mem->virt_base + (mem->size << PAGE_SHIFT))) {
 		int page = (vaddr - mem->virt_base) >> PAGE_SHIFT;
 
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index 29711445c81..9576a2eb375 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -167,6 +167,7 @@ EXPORT_SYMBOL(dma_alloc_coherent);
 void dma_free_coherent(struct device *dev, size_t size,
 			 void *vaddr, dma_addr_t bus)
 {
+	WARN_ON(irqs_disabled());	/* for portability */
 	if (dma_ops->unmap_single)
 		dma_ops->unmap_single(dev, bus, size, 0);
 	free_pages((unsigned long)vaddr, get_order(size));
diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
index 03e1cce58f4..139eb03490f 100644
--- a/arch/x86/kernel/reboot_fixups_32.c
+++ b/arch/x86/kernel/reboot_fixups_32.c
@@ -11,6 +11,7 @@
 
 #include <asm/delay.h>
 #include <linux/pci.h>
+#include <linux/interrupt.h>
 #include <asm/reboot_fixups.h>
 #include <asm/msr.h>
 
@@ -56,6 +57,11 @@ void mach_reboot_fixups(void)
 	struct pci_dev *dev;
 	int i;
 
+	/* we can be called from sysrq-B code. In such a case it is
+	 * prohibited to dig PCI */
+	if (in_interrupt())
+		return;
+
 	for (i=0; i < ARRAY_SIZE(fixups_table); i++) {
 		cur = &(fixups_table[i]);
 		dev = pci_get_device(cur->vendor, cur->device, NULL);
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index bc8a44bddaa..27a391da9a9 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -2,15 +2,199 @@
 #include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/irq.h>
+#include <linux/dmi.h>
 #include <asm/numa.h>
 #include "pci.h"
 
+static int __devinit can_skip_ioresource_align(struct dmi_system_id *d)
+{
+	pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
+	printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident);
+	return 0;
+}
+
+static struct dmi_system_id acpi_pciprobe_dmi_table[] = {
+/*
+ * Systems where PCI IO resource ISA alignment can be skipped
+ * when the ISA enable bit in the bridge control is not set
+ */
+	{
+		.callback = can_skip_ioresource_align,
+		.ident = "IBM System x3800",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
+		},
+	},
+	{
+		.callback = can_skip_ioresource_align,
+		.ident = "IBM System x3850",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "x3850"),
+		},
+	},
+	{
+		.callback = can_skip_ioresource_align,
+		.ident = "IBM System x3950",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "x3950"),
+		},
+	},
+	{}
+};
+
+struct pci_root_info {
+	char *name;
+	unsigned int res_num;
+	struct resource *res;
+	struct pci_bus *bus;
+	int busnum;
+};
+
+static acpi_status
+resource_to_addr(struct acpi_resource *resource,
+			struct acpi_resource_address64 *addr)
+{
+	acpi_status status;
+
+	status = acpi_resource_to_address64(resource, addr);
+	if (ACPI_SUCCESS(status) &&
+	    (addr->resource_type == ACPI_MEMORY_RANGE ||
+	    addr->resource_type == ACPI_IO_RANGE) &&
+	    addr->address_length > 0 &&
+	    addr->producer_consumer == ACPI_PRODUCER) {
+		return AE_OK;
+	}
+	return AE_ERROR;
+}
+
+static acpi_status
+count_resource(struct acpi_resource *acpi_res, void *data)
+{
+	struct pci_root_info *info = data;
+	struct acpi_resource_address64 addr;
+	acpi_status status;
+
+	status = resource_to_addr(acpi_res, &addr);
+	if (ACPI_SUCCESS(status))
+		info->res_num++;
+	return AE_OK;
+}
+
+static acpi_status
+setup_resource(struct acpi_resource *acpi_res, void *data)
+{
+	struct pci_root_info *info = data;
+	struct resource *res;
+	struct acpi_resource_address64 addr;
+	acpi_status status;
+	unsigned long flags;
+	struct resource *root;
+
+	status = resource_to_addr(acpi_res, &addr);
+	if (!ACPI_SUCCESS(status))
+		return AE_OK;
+
+	if (addr.resource_type == ACPI_MEMORY_RANGE) {
+		root = &iomem_resource;
+		flags = IORESOURCE_MEM;
+		if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY)
+			flags |= IORESOURCE_PREFETCH;
+	} else if (addr.resource_type == ACPI_IO_RANGE) {
+		root = &ioport_resource;
+		flags = IORESOURCE_IO;
+	} else
+		return AE_OK;
+
+	res = &info->res[info->res_num];
+	res->name = info->name;
+	res->flags = flags;
+	res->start = addr.minimum + addr.translation_offset;
+	res->end = res->start + addr.address_length - 1;
+	res->child = NULL;
+
+	if (insert_resource(root, res)) {
+		printk(KERN_ERR "PCI: Failed to allocate 0x%lx-0x%lx "
+			"from %s for %s\n", (unsigned long) res->start,
+			(unsigned long) res->end, root->name, info->name);
+	} else {
+		info->bus->resource[info->res_num] = res;
+		info->res_num++;
+	}
+	return AE_OK;
+}
+
+static void
+adjust_transparent_bridge_resources(struct pci_bus *bus)
+{
+	struct pci_dev *dev;
+
+	list_for_each_entry(dev, &bus->devices, bus_list) {
+		int i;
+		u16 class = dev->class >> 8;
+
+		if (class == PCI_CLASS_BRIDGE_PCI && dev->transparent) {
+			for(i = 3; i < PCI_BUS_NUM_RESOURCES; i++)
+				dev->subordinate->resource[i] =
+						dev->bus->resource[i - 3];
+		}
+	}
+}
+
+static void
+get_current_resources(struct acpi_device *device, int busnum,
+			struct pci_bus *bus)
+{
+	struct pci_root_info info;
+	size_t size;
+
+	info.bus = bus;
+	info.res_num = 0;
+	acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
+				&info);
+	if (!info.res_num)
+		return;
+
+	size = sizeof(*info.res) * info.res_num;
+	info.res = kmalloc(size, GFP_KERNEL);
+	if (!info.res)
+		goto res_alloc_fail;
+
+	info.name = kmalloc(12, GFP_KERNEL);
+	if (!info.name)
+		goto name_alloc_fail;
+	sprintf(info.name, "PCI Bus #%02x", busnum);
+
+	info.res_num = 0;
+	acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
+				&info);
+	if (info.res_num)
+		adjust_transparent_bridge_resources(bus);
+
+	return;
+
+name_alloc_fail:
+	kfree(info.res);
+res_alloc_fail:
+	return;
+}
+
 struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
 {
 	struct pci_bus *bus;
 	struct pci_sysdata *sd;
 	int pxm;
 
+	dmi_check_system(acpi_pciprobe_dmi_table);
+
+	if (domain && !pci_domains_supported) {
+		printk(KERN_WARNING "PCI: Multiple domains not supported "
+		       "(dom %d, bus %d)\n", domain, busnum);
+		return NULL;
+	}
+
 	/* Allocate per-root-bus (not per bus) arch-specific data.
 	 * TODO: leak; this memory is never freed.
 	 * It's arguable whether it's worth the trouble to care.
@@ -21,12 +205,7 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
 		return NULL;
 	}
 
-	if (domain != 0) {
-		printk(KERN_WARNING "PCI: Multiple domains not supported\n");
-		kfree(sd);
-		return NULL;
-	}
-
+	sd->domain = domain;
 	sd->node = -1;
 
 	pxm = acpi_get_pxm(device->handle);
@@ -47,6 +226,9 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
 		}
 	}
 #endif
+
+	if (bus && (pci_probe & PCI_USE__CRS))
+		get_current_resources(device, busnum, bus);
 	
 	return bus;
 }
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 07d5223442b..2d71bbc411d 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -29,12 +29,14 @@ struct pci_raw_ops *raw_pci_ops;
 
 static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
 {
-	return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
+	return raw_pci_ops->read(pci_domain_nr(bus), bus->number,
+				 devfn, where, size, value);
 }
 
 static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
 {
-	return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
+	return raw_pci_ops->write(pci_domain_nr(bus), bus->number,
+				  devfn, where, size, value);
 }
 
 struct pci_ops pci_root_ops = {
@@ -287,6 +289,16 @@ static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL685c G1"),
 		},
 	},
+#ifdef __i386__
+	{
+		.callback = assign_all_busses,
+		.ident = "Compaq EVO N800c",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "EVO N800c"),
+		},
+	},
+#endif
 	{}
 };
 
@@ -426,6 +438,9 @@ char * __devinit  pcibios_setup(char *str)
 	} else if (!strcmp(str, "assign-busses")) {
 		pci_probe |= PCI_ASSIGN_ALL_BUSSES;
 		return NULL;
+	} else if (!strcmp(str, "use_crs")) {
+		pci_probe |= PCI_USE__CRS;
+		return NULL;
 	} else if (!strcmp(str, "routeirq")) {
 		pci_routeirq = 1;
 		return NULL;
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index c82cbf4c722..6cff66dd0c9 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -353,6 +353,53 @@ static void __devinit pci_fixup_video(struct pci_dev *pdev)
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
 
+
+static struct dmi_system_id __devinitdata msi_k8t_dmi_table[] = {
+	{
+		.ident = "MSI-K8T-Neo2Fir",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MSI"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "MS-6702E"),
+		},
+	},
+	{}
+};
+
+/*
+ * The AMD-Athlon64 board MSI "K8T Neo2-FIR" disables the onboard sound
+ * card if a PCI-soundcard is added.
+ *
+ * The BIOS only gives options "DISABLED" and "AUTO". This code sets
+ * the corresponding register-value to enable the soundcard.
+ *
+ * The soundcard is only enabled, if the mainborad is identified
+ * via DMI-tables and the soundcard is detected to be off.
+ */
+static void __devinit pci_fixup_msi_k8t_onboard_sound(struct pci_dev *dev)
+{
+	unsigned char val;
+	if (!dmi_check_system(msi_k8t_dmi_table))
+		return; /* only applies to MSI K8T Neo2-FIR */
+
+	pci_read_config_byte(dev, 0x50, &val);
+	if (val & 0x40) {
+		pci_write_config_byte(dev, 0x50, val & (~0x40));
+
+		/* 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, "
+					"can't enable onboard soundcard!\n");
+		else
+			printk(KERN_INFO "PCI: Detected MSI K8T Neo2-FIR, "
+					"enabled onboard soundcard.\n");
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237,
+		pci_fixup_msi_k8t_onboard_sound);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237,
+		pci_fixup_msi_k8t_onboard_sound);
+
 /*
  * Some Toshiba laptops need extra code to enable their TI TSB43AB22/A.
  *
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index bcd2f94b732..42ba0e2da1a 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -33,6 +33,15 @@
 
 #include "pci.h"
 
+static int
+skip_isa_ioresource_align(struct pci_dev *dev) {
+
+	if ((pci_probe & PCI_CAN_SKIP_ISA_ALIGN) &&
+	    !(dev->bus->bridge_ctl & PCI_BRIDGE_CTL_ISA))
+		return 1;
+	return 0;
+}
+
 /*
  * We need to avoid collisions with `mirrored' VGA ports
  * and other strange ISA hardware, so we always want the
@@ -50,9 +59,13 @@ void
 pcibios_align_resource(void *data, struct resource *res,
 			resource_size_t size, resource_size_t align)
 {
+	struct pci_dev *dev = data;
+
 	if (res->flags & IORESOURCE_IO) {
 		resource_size_t start = res->start;
 
+		if (skip_isa_ioresource_align(dev))
+			return;
 		if (start & 0x300) {
 			start = (start + 0x3ff) & ~0x3ff;
 			res->start = start;
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c
index d98c6b096f8..c52150fdf82 100644
--- a/arch/x86/pci/irq.c
+++ b/arch/x86/pci/irq.c
@@ -492,6 +492,26 @@ static int pirq_amd756_set(struct pci_dev *router, struct pci_dev *dev, int pirq
 	return 1;
 }
 
+/*
+ * PicoPower PT86C523
+ */
+static int pirq_pico_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+	outb(0x10 + ((pirq - 1) >> 1), 0x24);
+	return ((pirq - 1) & 1) ? (inb(0x26) >> 4) : (inb(0x26) & 0xf);
+}
+
+static int pirq_pico_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
+			int irq)
+{
+	unsigned int x;
+	outb(0x10 + ((pirq - 1) >> 1), 0x24);
+	x = inb(0x26);
+	x = ((pirq - 1) & 1) ? ((x & 0x0f) | (irq << 4)) : ((x & 0xf0) | (irq));
+	outb(x, 0x26);
+	return 1;
+}
+
 #ifdef CONFIG_PCI_BIOS
 
 static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
@@ -721,6 +741,24 @@ static __init int amd_router_probe(struct irq_router *r, struct pci_dev *router,
 	return 1;
 }
 		
+static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+	switch (device) {
+	case PCI_DEVICE_ID_PICOPOWER_PT86C523:
+		r->name = "PicoPower PT86C523";
+		r->get = pirq_pico_get;
+		r->set = pirq_pico_set;
+		return 1;
+
+	case PCI_DEVICE_ID_PICOPOWER_PT86C523BBP:
+		r->name = "PicoPower PT86C523 rev. BB+";
+		r->get = pirq_pico_get;
+		r->set = pirq_pico_set;
+		return 1;
+	}
+	return 0;
+}
+
 static __initdata struct irq_router_handler pirq_routers[] = {
 	{ PCI_VENDOR_ID_INTEL, intel_router_probe },
 	{ PCI_VENDOR_ID_AL, ali_router_probe },
@@ -732,6 +770,7 @@ static __initdata struct irq_router_handler pirq_routers[] = {
 	{ PCI_VENDOR_ID_VLSI, vlsi_router_probe },
 	{ PCI_VENDOR_ID_SERVERWORKS, serverworks_router_probe },
 	{ PCI_VENDOR_ID_AMD, amd_router_probe },
+	{ PCI_VENDOR_ID_PICOPOWER, pico_router_probe },
 	/* Someone with docs needs to add the ATI Radeon IGP */
 	{ 0, NULL }
 };
diff --git a/arch/x86/pci/pci.h b/arch/x86/pci/pci.h
index 8c66f275756..ac56d3916c5 100644
--- a/arch/x86/pci/pci.h
+++ b/arch/x86/pci/pci.h
@@ -26,6 +26,8 @@
 #define PCI_ASSIGN_ROMS		0x1000
 #define PCI_BIOS_IRQ_SCAN	0x2000
 #define PCI_ASSIGN_ALL_BUSSES	0x4000
+#define PCI_CAN_SKIP_ISA_ALIGN	0x8000
+#define PCI_USE__CRS		0x10000
 
 extern unsigned int pci_probe;
 extern unsigned long pirq_table_addr;
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index eb80f5aca54..cf013cb85ea 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -738,6 +738,11 @@ config PCI_MMCONFIG
 	bool "Support mmconfig PCI config space access"
 	depends on PCI && ACPI
 
+config PCI_DOMAINS
+	bool
+	depends on PCI
+	default y
+
 source "drivers/pci/pcie/Kconfig"
 
 source "drivers/pci/Kconfig"
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 2305cc450a4..a96b739b2d3 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -549,7 +549,7 @@ get_slot_mapping(struct pci_bus *bus, u8 bus_num, u8 dev_num, u8 *slot)
 			 * slot. */
 			bus->number = tbus;
 			pci_bus_read_config_dword(bus, PCI_DEVFN(tdevice, 0),
-						PCI_REVISION_ID, &work);
+						PCI_CLASS_REVISION, &work);
 
 			if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
 				pci_bus_read_config_dword(bus,
diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index 37d72f123a8..3ef0a4875a6 100644
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -37,6 +37,7 @@
 #include <linux/smp_lock.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
+#include <linux/kthread.h>
 #include "cpqphp.h"
 
 static u32 configure_new_device(struct controller* ctrl, struct pci_func *func,
@@ -45,34 +46,20 @@ static int configure_new_function(struct controller* ctrl, struct pci_func *func
 			u8 behind_bridge, struct resource_lists *resources);
 static void interrupt_event_handler(struct controller *ctrl);
 
-static struct semaphore event_semaphore;	/* mutex for process loop (up if something to process) */
-static struct semaphore event_exit;		/* guard ensure thread has exited before calling it quits */
-static int event_finished;
-static unsigned long pushbutton_pending;	/* = 0 */
 
-/* things needed for the long_delay function */
-static struct semaphore		delay_sem;
-static wait_queue_head_t	delay_wait;
+static struct task_struct *cpqhp_event_thread;
+static unsigned long pushbutton_pending;	/* = 0 */
 
 /* delay is in jiffies to wait for */
 static void long_delay(int delay)
 {
-	DECLARE_WAITQUEUE(wait, current);
-	
-	/* only allow 1 customer into the delay queue at once
-	 * yes this makes some people wait even longer, but who really cares?
-	 * this is for _huge_ delays to make the hardware happy as the 
-	 * signals bounce around
+	/*
+	 *