Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (109 commits)
  PCI: fix coding style issue in pci_save_state()
  PCI: add pci_request_acs
  PCI: fix BUG_ON triggered by logical PCIe root port removal
  PCI: remove ifdefed pci_cleanup_aer_correct_error_status
  PCI: unconditionally clear AER uncorr status register during cleanup
  x86/PCI: claim SR-IOV BARs in pcibios_allocate_resource
  PCI: portdrv: remove redundant definitions
  PCI: portdrv: remove unnecessary struct pcie_port_data
  PCI: portdrv: minor cleanup for pcie_port_device_register
  PCI: portdrv: add missing irq cleanup
  PCI: portdrv: enable device before irq initialization
  PCI: portdrv: cleanup service irqs initialization
  PCI: portdrv: check capabilities first
  PCI: portdrv: move PME capability check
  PCI: portdrv: remove redundant pcie type calculation
  PCI: portdrv: cleanup pcie_device registration
  PCI: portdrv: remove redundant pcie_port_device_probe
  PCI: Always set prefetchable base/limit upper32 registers
  PCI: read-modify-write the pcie device control register when initiating pcie flr
  PCI: show dma_mask bits in /sys
  ...

Fixed up conflicts in:
	arch/x86/kernel/amd_iommu_init.c
	drivers/pci/dmar.c
	drivers/pci/hotplug/acpiphp_glue.c

arch/ia64/include/asm/xen/hypervisor.h

@@ -37,35 +37,9 @@
 #include <xen/interface/xen.h>
 #include <xen/interface/version.h>	/* to compile feature.c */
 #include <xen/features.h>		/* to comiple xen-netfront.c */
+#include <xen/xen.h>
 #include <asm/xen/hypercall.h>
 
-/* xen_domain_type is set before executing any C code by early_xen_setup */
-enum xen_domain_type {
-	XEN_NATIVE,	/* running on bare hardware */
-	XEN_PV_DOMAIN,	/* running in a PV domain */
-	XEN_HVM_DOMAIN,	/* running in a Xen hvm domain*/
-};
-
-#ifdef CONFIG_XEN
-extern enum xen_domain_type xen_domain_type;
-#else
-#define xen_domain_type		XEN_NATIVE
-#endif
-
-#define xen_domain()		(xen_domain_type != XEN_NATIVE)
-#define xen_pv_domain()		(xen_domain() &&			\
-				 xen_domain_type == XEN_PV_DOMAIN)
-#define xen_hvm_domain()	(xen_domain() &&			\
-				 xen_domain_type == XEN_HVM_DOMAIN)
-
-#ifdef CONFIG_XEN_DOM0
-#define xen_initial_domain()	(xen_pv_domain() &&			\
-				 (xen_start_info->flags & SIF_INITDOMAIN))
-#else
-#define xen_initial_domain()	(0)
-#endif
-
-
 #ifdef CONFIG_XEN
 extern struct shared_info *HYPERVISOR_shared_info;
 extern struct start_info *xen_start_info;

arch/ia64/pci/pci.c

@@ -131,6 +131,7 @@ alloc_pci_controller (int seg)
 }
 
 struct pci_root_info {
+	struct acpi_device *bridge;
 	struct pci_controller *controller;
 	char *name;
 };
@@ -297,9 +298,20 @@ static __devinit acpi_status add_window(struct acpi_resource *res, void *data)
 	window->offset = offset;
 
 	if (insert_resource(root, &window->resource)) {
-		printk(KERN_ERR "alloc 0x%llx-0x%llx from %s for %s failed\n",
-			window->resource.start, window->resource.end,
-			root->name, info->name);
+		dev_err(&info->bridge->dev,
+			"can't allocate host bridge window %pR\n",
+			&window->resource);
+	} else {
+		if (offset)
+			dev_info(&info->bridge->dev, "host bridge window %pR "
+				 "(PCI address [%#llx-%#llx])\n",
+				 &window->resource,
+				 window->resource.start - offset,
+				 window->resource.end - offset);
+		else
+			dev_info(&info->bridge->dev,
+				 "host bridge window %pR\n",
+				 &window->resource);
 	}
 
 	return AE_OK;
@@ -319,8 +331,9 @@ pcibios_setup_root_windows(struct pci_bus *bus, struct pci_controller *ctrl)
 		    (res->end - res->start < 16))
 			continue;
 		if (j >= PCI_BUS_NUM_RESOURCES) {
-			printk("Ignoring range [%#llx-%#llx] (%lx)\n",
-					res->start, res->end, res->flags);
+			dev_warn(&bus->dev,
+				 "ignoring host bridge window %pR (no space)\n",
+				 res);
 			continue;
 		}
 		bus->resource[j++] = res;
@@ -364,6 +377,7 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
 			goto out3;
 
 		sprintf(name, "PCI Bus %04x:%02x", domain, bus);
+		info.bridge = device;
 		info.controller = controller;
 		info.name = name;
 		acpi_walk_resources(device->handle, METHOD_NAME__CRS,
@@ -720,9 +734,6 @@ int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size)
 	return ret;
 }
 
-/* It's defined in drivers/pci/pci.c */
-extern u8 pci_cache_line_size;
-
 /**
  * set_pci_cacheline_size - determine cacheline size for PCI devices
  *
@@ -731,7 +742,7 @@ extern u8 pci_cache_line_size;
  *
  * Code mostly taken from arch/ia64/kernel/palinfo.c:cache_info().
  */
-static void __init set_pci_cacheline_size(void)
+static void __init set_pci_dfl_cacheline_size(void)
 {
 	unsigned long levels, unique_caches;
 	long status;
@@ -751,7 +762,7 @@ static void __init set_pci_cacheline_size(void)
 			"(status=%ld)\n", __func__, status);
 		return;
 	}
-	pci_cache_line_size = (1 << cci.pcci_line_size) / 4;
+	pci_dfl_cache_line_size = (1 << cci.pcci_line_size) / 4;
 }
 
 u64 ia64_dma_get_required_mask(struct device *dev)
@@ -782,7 +793,7 @@ EXPORT_SYMBOL_GPL(dma_get_required_mask);
 
 static int __init pcibios_init(void)
 {
-	set_pci_cacheline_size();
+	set_pci_dfl_cacheline_size();
 	return 0;
 }
 

arch/sparc/include/asm/pci_64.h

@@ -16,8 +16,6 @@
 
 #define PCI_IRQ_NONE		0xffffffff
 
-#define PCI_CACHE_LINE_BYTES	64
-
 static inline void pcibios_set_master(struct pci_dev *dev)
 {
 	/* No special bus mastering setup handling */

arch/sparc/kernel/pci.c

@@ -1081,3 +1081,10 @@ void pci_resource_to_user(const struct pci_dev *pdev, int bar,
 	*start = rp->start - offset;
 	*end = rp->end - offset;
 }
+
+static int __init pcibios_init(void)
+{
+	pci_dfl_cache_line_size = 64 >> 2;
+	return 0;
+}
+subsys_initcall(pcibios_init);

arch/x86/include/asm/pci_x86.h

@@ -118,11 +118,27 @@ extern int __init pcibios_init(void);
 
 /* pci-mmconfig.c */
 
+/* "PCI MMCONFIG %04x [bus %02x-%02x]" */
+#define PCI_MMCFG_RESOURCE_NAME_LEN (22 + 4 + 2 + 2)
+
+struct pci_mmcfg_region {
+	struct list_head list;
+	struct resource res;
+	u64 address;
+	char __iomem *virt;
+	u16 segment;
+	u8 start_bus;
+	u8 end_bus;
+	char name[PCI_MMCFG_RESOURCE_NAME_LEN];
+};
+
 extern int __init pci_mmcfg_arch_init(void);
 extern void __init pci_mmcfg_arch_free(void);
+extern struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus);
+
+extern struct list_head pci_mmcfg_list;
 
-extern struct acpi_mcfg_allocation *pci_mmcfg_config;
-extern int pci_mmcfg_config_num;
+#define PCI_MMCFG_BUS_OFFSET(bus)      ((bus) << 20)
 
 /*
  * AMD Fam10h CPUs are buggy, and cannot access MMIO config space

arch/x86/include/asm/xen/hypervisor.h

@@ -37,31 +37,4 @@
 extern struct shared_info *HYPERVISOR_shared_info;
 extern struct start_info *xen_start_info;
 
-enum xen_domain_type {
-	XEN_NATIVE,		/* running on bare hardware    */
-	XEN_PV_DOMAIN,		/* running in a PV domain      */
-	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
-};
-
-#ifdef CONFIG_XEN
-extern enum xen_domain_type xen_domain_type;
-#else
-#define xen_domain_type		XEN_NATIVE
-#endif
-
-#define xen_domain()		(xen_domain_type != XEN_NATIVE)
-#define xen_pv_domain()		(xen_domain() &&			\
-				 xen_domain_type == XEN_PV_DOMAIN)
-#define xen_hvm_domain()	(xen_domain() &&			\
-				 xen_domain_type == XEN_HVM_DOMAIN)
-
-#ifdef CONFIG_XEN_DOM0
-#include <xen/interface/xen.h>
-
-#define xen_initial_domain()	(xen_pv_domain() && \
-				 xen_start_info->flags & SIF_INITDOMAIN)
-#else  /* !CONFIG_XEN_DOM0 */
-#define xen_initial_domain()	(0)
-#endif	/* CONFIG_XEN_DOM0 */
-
 #endif /* _ASM_X86_XEN_HYPERVISOR_H */

arch/x86/kernel/amd_iommu_init.c

@@ -1336,6 +1336,9 @@ void __init amd_iommu_detect(void)
 		iommu_detected = 1;
 		amd_iommu_detected = 1;
 		x86_init.iommu.iommu_init = amd_iommu_init;
+
+		/* Make sure ACS will be enabled */
+		pci_request_acs();
 	}
 }
 

arch/x86/pci/Makefile

@@ -15,3 +15,8 @@ obj-$(CONFIG_X86_NUMAQ)		+= numaq_32.o
 
 obj-y				+= common.o early.o
 obj-y				+= amd_bus.o
+obj-$(CONFIG_X86_64)		+= bus_numa.o intel_bus.o
+
+ifeq ($(CONFIG_PCI_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif

arch/x86/pci/acpi.c

@@ -7,6 +7,7 @@
 #include <asm/pci_x86.h>
 
 struct pci_root_info {
+	struct acpi_device *bridge;
 	char *name;
 	unsigned int res_num;
 	struct resource *res;
@@ -58,6 +59,30 @@ bus_has_transparent_bridge(struct pci_bus *bus)
 	return false;
 }
 
+static void
+align_resource(struct acpi_device *bridge, struct resource *res)
+{
+	int align = (res->flags & IORESOURCE_MEM) ? 16 : 4;
+
+	/*
+	 * Host bridge windows are not BARs, but the decoders on the PCI side
+	 * that claim this address space have starting alignment and length
+	 * constraints, so fix any obvious BIOS goofs.
+	 */
+	if (!IS_ALIGNED(res->start, align)) {
+		dev_printk(KERN_DEBUG, &bridge->dev,
+			   "host bridge window %pR invalid; "
+			   "aligning start to %d-byte boundary\n", res, align);
+		res->start &= ~(align - 1);
+	}
+	if (!IS_ALIGNED(res->end + 1, align)) {
+		dev_printk(KERN_DEBUG, &bridge->dev,
+			   "host bridge window %pR invalid; "
+			   "aligning end to %d-byte boundary\n", res, align);
+		res->end = ALIGN(res->end, align) - 1;
+	}
+}
+
 static acpi_status
 setup_resource(struct acpi_resource *acpi_res, void *data)
 {
@@ -91,11 +116,12 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
 	start = addr.minimum + addr.translation_offset;
 	end = start + addr.address_length - 1;
 	if (info->res_num >= max_root_bus_resources) {
-		printk(KERN_WARNING "PCI: Failed to allocate 0x%lx-0x%lx "
-			"from %s for %s due to _CRS returning more than "
-			"%d resource descriptors\n", (unsigned long) start,
-			(unsigned long) end, root->name, info->name,
-			max_root_bus_resources);
+		if (pci_probe & PCI_USE__CRS)
+			printk(KERN_WARNING "PCI: Failed to allocate "
+			       "0x%lx-0x%lx from %s for %s due to _CRS "
+			       "returning more than %d resource descriptors\n",
+			       (unsigned long) start, (unsigned long) end,
+			       root->name, info->name, max_root_bus_resources);
 		return AE_OK;
 	}
 
@@ -105,14 +131,28 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
 	res->start = start;
 	res->end = end;
 	res->child = NULL;
+	align_resource(info->bridge, res);
+
+	if (!(pci_probe & PCI_USE__CRS)) {
+		dev_printk(KERN_DEBUG, &info->bridge->dev,
+			   "host bridge window %pR (ignored)\n", res);
+		return AE_OK;
+	}
 
 	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);
+		dev_err(&info->bridge->dev,
+			"can't allocate host bridge window %pR\n", res);
 	} else {
 		info->bus->resource[info->res_num] = res;
 		info->res_num++;
+		if (addr.translation_offset)
+			dev_info(&info->bridge->dev, "host bridge window %pR "
+				 "(PCI address [%#llx-%#llx])\n",
+				 res, res->start - addr.translation_offset,
+				 res->end - addr.translation_offset);
+		else
+			dev_info(&info->bridge->dev,
+				 "host bridge window %pR\n", res);
 	}
 	return AE_OK;
 }
@@ -124,6 +164,12 @@ get_current_resources(struct acpi_device *device, int busnum,
 	struct pci_root_info info;
 	size_t size;
 
+	if (!(pci_probe & PCI_USE__CRS))
+		dev_info(&device->dev,
+			 "ignoring host bridge windows from ACPI; "
+			 "boot with \"pci=use_crs\" to use them\n");
+
+	info.bridge = device;
 	info.bus = bus;
 	info.res_num = 0;
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_resource,
@@ -163,8 +209,9 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
 #endif
 
 	if (domain && !pci_domains_supported) {
-		printk(KERN_WARNING "PCI: Multiple domains not supported "
-		       "(dom %d, bus %d)\n", domain, busnum);
+		printk(KERN_WARNING "pci_bus %04x:%02x: "
+		       "ignored (multiple domains not supported)\n",
+		       domain, busnum);
 		return NULL;
 	}
 
@@ -188,7 +235,8 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
 	 */
 	sd = kzalloc(sizeof(*sd), GFP_KERNEL);
 	if (!sd) {
-		printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
+		printk(KERN_WARNING "pci_bus %04x:%02x: "
+		       "ignored (out of memory)\n", domain, busnum);
 		return NULL;
 	}
 
@@ -209,9 +257,7 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do
 	} else {
 		bus = pci_create_bus(NULL, busnum, &pci_root_ops, sd);
 		if (bus) {
-			if (pci_probe & PCI_USE__CRS)
-				get_current_resources(device, busnum, domain,
-							bus);
+			get_current_resources(device, busnum, domain, bus);
 			bus->subordinate = pci_scan_child_bus(bus);
 		}
 	}

arch/x86/pci/amd_bus.c

@@ -6,10 +6,10 @@
 
 #ifdef CONFIG_X86_64
 #include <asm/pci-direct.h>
-#include <asm/mpspec.h>
-#include <linux/cpumask.h>
 #endif
 
+#include "bus_numa.h"
+
 /*
  * This discovers the pcibus <-> node mapping on AMD K8.
  * also get peer root bus resource for io,mmio
@@ -17,67 +17,6 @@
 
 #ifdef CONFIG_X86_64
 
-/*
- * sub bus (transparent) will use entres from 3 to store extra from root,
- * so need to make sure have enought slot there, increase PCI_BUS_NUM_RESOURCES?
- */
-#define RES_NUM 16
-struct pci_root_info {
-	char name[12];
-	unsigned int res_num;
-	struct resource res[RES_NUM];
-	int bus_min;
-	int bus_max;
-	int node;
-	int link;
-};
-
-/* 4 at this time, it may become to 32 */
-#define PCI_ROOT_NR 4
-static int pci_root_num;
-static struct pci_root_info pci_root_info[PCI_ROOT_NR];
-
-void x86_pci_root_bus_res_quirks(struct pci_bus *b)
-{
-	int i;
-	int j;
-	struct pci_root_info *info;
-
-	/* don't go for it if _CRS is used already */
-	if (b->resource[0] != &ioport_resource ||
-	    b->resource[1] != &iomem_resource)
-		return;
-
-	/* if only one root bus, don't need to anything */
-	if (pci_root_num < 2)
-		return;
-
-	for (i = 0; i < pci_root_num; i++) {
-		if (pci_root_info[i].bus_min == b->number)
-			break;
-	}
-
-	if (i == pci_root_num)
-		return;
-
-	printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n",
-			b->number);
-
-	info = &pci_root_info[i];
-	for (j = 0; j < info->res_num; j++) {
-		struct resource *res;
-		struct resource *root;
-
-		res = &info->res[j];
-		b->resource[j] = res;
-		if (res->flags & IORESOURCE_IO)
-			root = &ioport_resource;
-		else
-			root = &iomem_resource;
-		insert_resource(root, res);
-	}
-}
-
 #define RANGE_NUM 16
 
 struct res_range {
@@ -130,52 +69,6 @@ static void __init update_range(struct res_range *range, size_t start,
 	}
 }
 
-static void __init update_res(struct pci_root_info *info, size_t start,
-			      size_t end, unsigned long flags, int merge)
-{
-	int i;
-	struct resource *res;
-
-	if (!merge)
-		goto addit;
-
-	/* try to merge it with old one */
-	for (i = 0; i < info->res_num; i++) {
-		size_t final_start, final_end;
-		size_t common_start, common_end;
-
-		res = &info->res[i];
-		if (res->flags != flags)
-			continue;
-
-		common_start = max((size_t)res->start, start);
-		common_end = min((size_t)res->end, end);
-		if (common_start > common_end + 1)
-			continue;
-
-		final_start = min((size_t)res->start, start);
-		final_end = max((size_t)res->end, end);
-
-		res->start = final_start;
-		res->end = final_end;
-		return;
-	}
-
-addit:
-
-	/* need to add that */
-	if (info->res_num >= RES_NUM)
-		return;
-
-	res = &info->res[info->res_num];
-	res->name = info->name;
-	res->flags = flags;
-	res->start = start;
-	res->end = end;
-	res->child = NULL;
-	info->res_num++;
-}
-
 struct pci_hostbridge_probe {
 	u32 bus;
 	u32 slot;
@@ -230,7 +123,6 @@ static int __init early_fill_mp_bus_info(void)
 	int j;
 	unsigned bus;
 	unsigned slot;
-	int found;
 	int node;
 	int link;
 	int def_node;
@@ -247,7 +139,7 @@ static int __init early_fill_mp_bus_info(void)
 	if (!early_pci_allowed())
 		return -1;
 
-	found = 0;
+	found_all_numa_early = 0;
 	for (i = 0; i < ARRAY_SIZE(pci_probes); i++) {
 		u32 id;
 		u16 device;
@@ -261,12 +153,12 @@ static int __init early_fill_mp_bus_info(void)
 		device = (id>>16) & 0xffff;
 		if (pci_probes[i].vendor == vendor &&
 		    pci_probes[i].device == device) {
-			found = 1;
+			found_all_numa_early = 1;
 			break;
 		}
 	}
 
-	if (!found)
+	if (!found_all_numa_early)
 		return 0;
 
 	pci_root_num = 0;
@@ -488,7 +380,7 @@ static int __init early_fill_mp_bus_info(void)
 		info = &pci_root_info[i];
 		res_num = info->res_num;
 		busnum = info->bus_min;
-		printk(KERN_DEBUG "bus: [%02x,%02x] on node %x link %x\n",
+		printk(KERN_DEBUG "bus: [%02x, %02x] on node %x link %x\n",
 		       info->bus_min, info->bus_max, info->node, info->link);
 		for (j = 0; j < res_num; j++) {
 			res = &info->res[j];

arch/x86/pci/bus_numa.c

@@ -0,0 +1,101 @@
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include "bus_numa.h"
+
+int pci_root_num;
+struct pci_root_info pci_root_info[PCI_ROOT_NR];
+int found_all_numa_early;
+
+void x86_pci_root_bus_res_quirks(struct pci_bus *b)
+{
+	int i;
+	int j;
+	struct pci_root_info *info;
+
+	/* don't go for it if _CRS is used already */
+	if (b->resource[0] != &ioport_resource ||
+	    b->resource[1] != &iomem_resource)
+		return;
+
+	if (!pci_root_num)
+		return;
+
+	/* for amd, if only one root bus, don't need to do anything */
+	if (pci_root_num < 2 && found_all_numa_early)
+		return;
+
+	for (i = 0; i < pci_root_num; i++) {
+		if (pci_root_info[i].bus_min == b->number)
+			break;
+	}
+
+	if (i == pci_root_num)
+		return;
+
+	printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n",
+			b->number);
+
+	info = &pci_root_info[i];
+	for (j = 0; j < info->res_num; j++) {
+		struct resource *res;
+		struct resource *root;
+
+		res = &info->res[j];
+		b->resource[j] = res;
+		if (res->flags & IORESOURCE_IO)
+			root = &ioport_resource;
+		else
+			root = &iomem_resource;
+		insert_resource(root, res);
+	}
+}
+
+void __init update_res(struct pci_root_info *info, size_t start,
+			      size_t end, unsigned long flags, int merge)
+{
+	int i;
+	struct resource *res;
+
+	if (start > end)
+		return;
+
+	if (!merge)
+		goto addit;
+
+	/* try to merge it with old one */
+	for (i = 0; i < info->res_num; i++) {
+		size_t final_start, final_end;
+		size_t common_start, common_end;
+
+		res = &info->res[i];
+		if (res->flags != flags)
+			continue;
+
+		common_start = max((size_t)res->start, start);
+		common_end = min((size_t)res->end, end);
+		if (common_start > common_end + 1)
+			continue;
+
+		final_start = min((size_t)res->start, start);
+		final_end = max((size_t)res->end, end);
+
+		res->start = final_start;
+		res->end = final_end;
+		return;
+	}
+
+addit:
+
+	/* need to add that */
+	if (info->res_num >= RES_NUM)
+		return;
+
+	res = &info->res[info->res_num];
+	res->name = info->name;
+	res->flags = flags;
+	res->start = start;
+	res->end = end;
+	res->child = NULL;
+	info->res_num++;
+}

arch/x86/pci/bus_numa.h

@@ -0,0 +1,27 @@
+#ifdef CONFIG_X86_64
+
+/*
+ * sub bus (transparent) will use entres from 3 to store extra from
+ * root, so need to make sure we have enough slot there, Should we
+ * increase PCI_BUS_NUM_RESOURCES?
+ */
+#define RES_NUM 16
+struct pci_root_info {
+	char name[12];
+	unsigned int res_num;
+	struct resource res[RES_NUM];
+	int bus_min;
+	int bus_max;
+	int node;
+	int link;
+};
+
+/* 4 at this time, it may become to 32 */
+#define PCI_ROOT_NR 4
+extern int pci_root_num;
+extern struct pci_root_info pci_root_info[PCI_ROOT_NR];
+extern int found_all_numa_early;
+
+extern void update_res(struct pci_root_info *info, size_t start,
+			      size_t end, unsigned long flags, int merge);
+#endif

arch/x86/pci/common.c

@@ -410,8 +410,6 @@ struct pci_bus * __devinit pcibios_scan_root(int busnum)
 	return bus;
 }
 
-extern u8 pci_cache_line_size;
-
 int __init pcibios_init(void)
 {
 	struct cpuinfo_x86 *c = &boot_cpu_data;
@@ -422,15 +420,19 @@ int __init pcibios_init(void)
 	}
 
 	/*
-	 * Assume PCI cacheline size of 32 bytes for all x86s except K7/K8
-	 * and P4. It's also good for 386/486s (which actually have 16)
+	 * Set PCI cacheline size to that of the CPU if the CPU has reported it.
+	 * (For older CPUs that don't support cpuid, we se it to 32 bytes
+	 * It's also good for 386/486s (which actually have 16)
 	 * as quite a few PCI devices do not support smaller values.
 	 */
-	pci_cache_line_size = 32 >> 2;
-	if (c->x86 >= 6 && c->x86_vendor == X86_VENDOR_AMD)
-		pci_cache_line_size = 64 >> 2;	/* K7 & K8 */
-	else if (c->x86 > 6 && c->x86_vendor == X86_VENDOR_INTEL)
-		pci_cache_line_size = 128 >> 2;	/* P4 */
+	if (c->x86_clflush_size > 0) {
+		pci_dfl_cache_line_size = c->x86_clflush_size >> 2;
+		printk(KERN_DEBUG "PCI: pci_cache_line_size set to %d bytes\n",
+			pci_dfl_cache_line_size << 2);
+	} else {
+ 		pci_dfl_cache_line_size = 32 >> 2;
+		printk(KERN_DEBUG "PCI: Unknown cacheline size. Setting to 32 bytes\n");
+	}
 
 	pcibios_resource_survey();
 

arch/x86/pci/early.c

@@ -12,8 +12,6 @@ u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset)
 	u32 v;
 	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 	v = inl(0xcfc);
-	if (v != 0xffffffff)
-		pr_debug("%x reading 4 from %x: %x\n", slot, offset, v);
 	return v;
 }
 
@@ -22,7 +20,6 @@ u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset)
 	u8 v;
 	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 	v = inb(0xcfc + (offset&3));
-	pr_debug("%x reading 1 from %x: %x\n", slot, offset, v);
 	return v;
 }
 
@@ -31,28 +28,24 @@ u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset)
 	u16 v;
 	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 	v = inw(0xcfc + (offset&2));
-	pr_debug("%x reading 2 from %x: %x\n", slot, offset, v);
 	return v;
 }
 
 void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset,
 				    u32 val)
 {
-	pr_debug("%x writing to %x: %x\n", slot, offset, val);
 	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 	outl(val, 0xcfc);
 }
 
 void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val)
 {
-	pr_debug("%x writing to %x: %x\n", slot, offset, val);
 	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 	outb(val, 0xcfc + (offset&3));
 }
 
 void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val)
 {
-	pr_debug("%x writing to %x: %x\n", slot, offset, val);
 	outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
 	outw(val, 0xcfc + (offset&2));
 }

arch/x86/pci/i386.c

@@ -129,7 +129,9 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
 					continue;
 				if (!r->start ||
 				    pci_claim_resource(dev, idx) < 0) {
-					dev_info(&dev->dev, "BAR %d: can't allocate resource\n", idx);
+					dev_info(&dev->dev,
+						 "can't reserve window %pR\n",
+						 r);
 					/*
 					 * Something is wrong with the region.
 					 * Invalidate the resource to prevent
@@ -144,16 +146,29 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
 	}
 }
 
+struct pci_check_idx_range {
+	int start;
+	int end;
+};
+
 static void __init pcibios_allocate_resources(int pass)
 {
 	struct pci_dev *dev = NULL;
-	int idx, disabled;
+	int idx, disabled, i;
 	u16 command;
 	struct resource *r;
 
+	struct pci_check_idx_range idx_range[] = {
+		{ PCI_STD_RESOURCES, PCI_STD_RESOURCE_END },
+#ifdef CONFIG_PCI_IOV
+		{ PCI_IOV_RESOURCES, PCI_IOV_RESOURCE_END },
+#endif
+	};
+
 	for_each_pci_dev(dev) {
 		pci_read_config_word(dev, PCI_COMMAND, &command);
-		for (idx = 0; idx < PCI_ROM_RESOURCE; idx++) {
+		for (i = 0; i < ARRAY_SIZE(idx_range); i++)
+		for (idx = idx_range[i].start; idx <= idx_range[i].end; idx++) {
 			r = &dev->resource[idx];
 			if (r->parent)		/* Already allocated */
 				continue;
@@ -164,12 +179,12 @@ static void __init pcibios_allocate_resources(int pass)
 			else
 				disabled = !(command & PCI_COMMAND_MEMORY);
 			if (pass == disabled) {
-				dev_dbg(&dev->dev, "resource %#08llx-%#08llx (f=%lx, d=%d, p=%d)\n",
-					(unsigned long long) r->start,
-					(unsigned long long) r->end,
-					r->flags, disabled, pass);
+				dev_dbg(&dev->dev,
+					"BAR %d: reserving %pr (d=%d, p=%d)\n",
+					idx, r, disabled, pass);
 				if (pci_claim_resource(dev, idx) < 0) {
-					dev_info(&dev->dev, "BAR %d: can't allocate resource\n", idx);
+					dev_info(&dev->dev,
+						 "can't reserve %pR\n", r);
 					/* We'll assign a new address later */
 					r->end -= r->start;
 					r->start = 0;
@@ -182,7 +197,7 @@ static void __init pcibios_allocate_resources(int pass)
 				/* Turn the ROM off, leave the resource region,
 				 * but keep it unregistered. */
 				u32 reg;
-				dev_dbg(&dev->dev, "disabling ROM\n");
+				dev_dbg(&dev->dev, "disabling ROM %pR\n", r);
 				r->flags &= ~IORESOURCE_ROM_ENABLE;
 				pci_read_config_dword(dev,
 						dev->rom_base_reg, &reg);
@@ -282,6 +297,15 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 		return -EINVAL;
 
 	prot = pgprot_val(vma->vm_page_prot);
+
+	/*
+ 	 * Return error if pat is not enabled and write_combine is requested.
+ 	 * Caller can followup with UC MINUS request and add a WC mtrr if there
+ 	 * is a free mtrr slot.
+ 	 */
+	if (!pat_enabled && write_combine)
+		return -EINVAL;
+
 	if (pat_enabled && write_combine)
 		prot |= _PAGE_CACHE_WC;
 	else if (pat_enabled || boot_cpu_data.x86 > 3)

arch/x86/pci/intel_bus.c

@@ -0,0 +1,90 @@
+/*
+ * to read io range from IOH pci conf, need to do it after mmconfig is there
+ */
+
+#include <linux/delay.h>
+#include <linux/dmi.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <asm/pci_x86.h>
+
+#include "bus_numa.h"
+
+static inline void print_ioh_resources(struct pci_root_info *info)
+{
+	int res_num;
+	int busnum;
+	int i;
+
+	printk(KERN_DEBUG "IOH bus: [%02x, %02x]\n",
+			info->bus_min, info->bus_max);
+	res_num = info->res_num;
+	busnum = info->bus_min;
+	for (i = 0; i < res_num; i++) {
+		struct resource *res;
+
+		res = &info->res[i];
+		printk(KERN_DEBUG "IOH bus: %02x index %x %s: [%llx, %llx]\n",
+			busnum, i,
+			(res->flags & IORESOURCE_IO) ? "io port" :
+							"mmio",
+			res->start, res->end);
+	}
+}
+
+#define IOH_LIO			0x108
+#define IOH_LMMIOL		0x10c
+#define IOH_LMMIOH		0x110
+#define IOH_LMMIOH_BASEU	0x114
+#define IOH_LMMIOH_LIMITU	0x118
+#define IOH_LCFGBUS		0x11c
+
+static void __devinit pci_root_bus_res(struct pci_dev *dev)
+{
+	u16 word;
+	u32 dword;
+	struct pci_root_info *info;
+	u16 io_base, io_end;
+	u32 mmiol_base, mmiol_end;
+	u64 mmioh_base, mmioh_end;
+	int bus_base, bus_end;
+
+	if (pci_root_num >= PCI_ROOT_NR) {
+		printk(KERN_DEBUG "intel_bus.c: PCI_ROOT_NR is too small\n");
+		return;
+	}
+
+	info = &pci_root_info[pci_root_num];
+	pci_root_num++;
+
+	pci_read_config_word(dev, IOH_LCFGBUS, &word);
+	bus_base = (word & 0xff);
+	bus_end = (word & 0xff00) >> 8;
+	sprintf(info->name, "PCI Bus #%02x", bus_base);
+	info->bus_min = bus_base;
+	info->bus_max = bus_end;
+
+	pci_read_config_word(dev, IOH_LIO, &word);
+	io_base = (word & 0xf0) << (12 - 4);
+	io_end = (word & 0xf000) | 0xfff;
+	update_res(info, io_base, io_end, IORESOURCE_IO, 0);
+
+	pci_read_config_dword(dev, IOH_LMMIOL, &dword);
+	mmiol_base = (dword & 0xff00) << (24 - 8);
+	mmiol_end = (dword & 0xff000000) | 0xffffff;
+	update_res(info, mmiol_base, mmiol_end, IORESOURCE_MEM, 0);
+
+	pci_read_config_dword(dev, IOH_LMMIOH, &dword);
+	mmioh_base = ((u64)(dword & 0xfc00)) << (26 - 10);
+	mmioh_end = ((u64)(dword & 0xfc000000) | 0x3ffffff);
+	pci_read_config_dword(dev, IOH_LMMIOH_BASEU, &dword);
+	mmioh_base |= ((u64)(dword & 0x7ffff)) << 32;
+	pci_read_config_dword(dev, IOH_LMMIOH_LIMITU, &dword);
+	mmioh_end |= ((u64)(dword & 0x7ffff)) << 32;
+	update_res(info, mmioh_base, mmioh_end, IORESOURCE_MEM, 0);
+
+	print_ioh_resources(info);
+}
+
+/* intel IOH */
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, pci_root_bus_res);

arch/x86/pci/mmconfig-shared.c

@@ -15,48 +15,98 @@
 #include <linux/acpi.h>
 #include <linux/sfi_acpi.h>
 #include <linux/bitmap.h>
-#include <linux/sort.h>
+#include <linux/dmi.h>
 #include <asm/e820.h>
 #include <asm/pci_x86.h>
 #include <asm/acpi.h>
 
 #define PREFIX "PCI: "
 
-/* aperture is up to 256MB but BIOS may reserve less */
-#define MMCONFIG_APER_MIN	(2 * 1024*1024)
-#define MMCONFIG_APER_MAX	(256 * 1024*1024)
-
 /* Indicate if the mmcfg resources have been placed into the resource table. */
 static int __initdata pci_mmcfg_resources_inserted;
 
-static __init int extend_mmcfg(int num)
+LIST_HEAD(pci_mmcfg_list);
+
+static __init void pci_mmconfig_remove(struct pci_mmcfg_region *cfg)
 {
-	struct acpi_mcfg_allocation *new;
-	int new_num = pci_mmcfg_config_num + num;
+	if (cfg->res.parent)
+		release_resource(&cfg->res);
+	list_del(&cfg->list);
+	kfree(cfg);
+}
 
-	new = kzalloc(sizeof(pci_mmcfg_config[0]) * new_num, GFP_KERNEL);
-	if (!new)
-		return -1;
+static __init void free_all_mmcfg(void)
+{
+	struct pci_mmcfg_region *cfg, *tmp;
 
-	if (pci_mmcfg_config) {
-		memcpy(new, pci_mmcfg_config,
-			 sizeof(pci_mmcfg_config[0]) * new_num);
-		kfree(pci_mmcfg_config);
+	pci_mmcfg_arch_free();
+	list_for_each_entry_safe(cfg, tmp, &pci_mmcfg_list, list)
+		pci_mmconfig_remove(cfg);
+}
+
+static __init void list_add_sorted(struct pci_mmcfg_region *new)
+{
+	struct pci_mmcfg_region *cfg;
+
+	/* keep list sorted by segment and starting bus number */
+	list_for_each_entry(cfg, &pci_mmcfg_list, list) {
+		if (cfg->segment > new->segment ||
+		    (cfg->segment == new->segment &&
+		     cfg->start_bus >= new->start_bus)) {
+			list_add_tail(&new->list, &cfg->list);
+			return;
+		}
 	}
-	pci_mmcfg_config = new;
+	list_add_tail(&new->list, &pci_mmcfg_list);
+}
 
-	return 0;
+static __init struct pci_mmcfg_region *pci_mmconfig_add(int segment, int start,
+							int end, u64 addr)
+{
+	struct pci_mmcfg_region *new;
+	int num_buses;
+	struct resource *res;
+
+	if (addr == 0)
+		return NULL;
+
+	new = kzalloc(sizeof(*new), GFP_KERNEL);
+	if (!new)
+		return NULL;
+
+	new->address = addr;
+	new->segment = segment;
+	new->start_bus = start;
+	new->end_bus = end;
+
+	list_add_sorted(new);
+
+	num_buses = end - start + 1;
+	res = &new->res;
+	res->start = addr + PCI_MMCFG_BUS_OFFSET(start);
+	res->end = addr + PCI_MMCFG_BUS_OFFSET(num_buses) - 1;
+	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+	snprintf(new->name, PCI_MMCFG_RESOURCE_NAME_LEN,
+		 "PCI MMCONFIG %04x [bus %02x-%02x]", segment, start, end);
+	res->name = new->name;
+
+	printk(KERN_INFO PREFIX "MMCONFIG for domain %04x [bus %02x-%02x] at "
+	       "%pR (base %#lx)\n", segment, start, end, &new->res,
+	       (unsigned long) addr);
+
+	return new;
 }
 
-static __init void fill_one_mmcfg(u64 addr, int segment, int start, int end)
+struct pci_mmcfg_region *pci_mmconfig_lookup(int segment, int bus)
 {
-	int i = pci_mmcfg_config_num;
+	struct pci_mmcfg_region *cfg;
 
-	pci_mmcfg_config_num++;
-	pci_mmcfg_config[i].address = addr;
-	pci_mmcfg_config[i].pci_segment = segment;
-	pci_mmcfg_config[i].start_bus_number = start;
-	pci_mmcfg_config[i].end_bus_number = end;
+	list_for_each_entry(cfg, &pci_mmcfg_list, list)
+		if (cfg->segment == segment &&
+		    cfg->start_bus <= bus && bus <= cfg->end_bus)
+			return cfg;
+
+	return NULL;
 }
 
 static const char __init *pci_mmcfg_e7520(void)
@@ -68,11 +118,9 @@ static const char __init *pci_mmcfg_e7520(void)
 	if (win == 0x0000 || win == 0xf000)
 		return NULL;
 
-	if (extend_mmcfg(1) == -1)
+	if (pci_mmconfig_add(0, 0, 255, win << 16) == NULL)
 		return NULL;
 
-	fill_one_mmcfg(win << 16, 0, 0, 255);
-
 	return "Intel Corporation E7520 Memory Controller Hub";
 }
 
@@ -114,11 +162,9 @@ static const char __init *pci_mmcfg_intel_945(void)
 	if ((pciexbar & mask) >= 0xf0000000U)
 		return NULL;
 
-	if (extend_mmcfg(1) == -1)
+	if (pci_mmconfig_add(0, 0, (len >> 20) - 1, pciexbar & mask) == NULL)
 		return NULL;
 
-	fill_one_mmcfg(pciexbar & mask, 0, 0, (len >> 20) - 1);
-
 	return "Intel Corporation 945G/GZ/P/PL Express Memory Controller Hub";
 }
 
@@ -127,7 +173,7 @@ static const char __init *pci_mmcfg_amd_fam10h(void)
 	u32 low, high, address;
 	u64 base, msr;
 	int i;
-	unsigned segnbits = 0, busnbits;
+	unsigned segnbits = 0, busnbits, end_bus;
 
 	if (!(pci_probe & PCI_CHECK_ENABLE_AMD_MMCONF))
 		return NULL;
@@ -161,11 +207,13 @@ static const char __init *pci_mmcfg_amd_fam10h(void)
 		busnbits = 8;
 	}
 
-	if (extend_mmcfg(1 << segnbits) == -1)
-		return NULL;
-
+	end_bus = (1 << busnbits) - 1;
 	for (i = 0; i < (1 << segnbits); i++)
-		fill_one_mmcfg(base + (1<<28) * i, i, 0, (1 << busnbits) - 1);
+		if (pci_mmconfig_add(i, 0, end_bus,
+				     base + (1<<28) * i) == NULL) {
+			free_all_mmcfg();
+			return NULL;
+		}
 
 	return "AMD Family 10h NB";
 }
@@ -190,7 +238,7 @@ static const char __init *pci_mmcfg_nvidia_mcp55(void)
 	/*
 	 * do check if amd fam10h already took over
 	 */
-	if (!acpi_disabled || pci_mmcfg_config_num || mcp55_checked)
+	if (!acpi_disabled || !list_empty(&pci_mmcfg_list) || mcp55_checked)
 		return NULL;
 
 	mcp55_checked = true;
@@ -213,16 +261,14 @@ static const char __init *pci_mmcfg_nvidia_mcp55(void)
 		if (!(extcfg & extcfg_enable_mask))
 			continue;
 
-		if (extend_mmcfg(1) == -1)
-			continue;
-
 		size_index = (extcfg & extcfg_size_mask) >> extcfg_size_shift;
 		base = extcfg & extcfg_base_mask[size_index];
 		/* base could > 4G */
 		base <<= extcfg_base_lshift;
 		start = (extcfg & extcfg_start_mask) >> extcfg_start_shift;
 		end = start + extcfg_sizebus[size_index] - 1;
-		fill_one_mmcfg(base, 0, start, end);
+		if (pci_mmconfig_add(0, start, end, base) == NULL)
+			continue;
 		mcp55_mmconf_found++;
 	}
 
@@ -253,45 +299,27 @@ static struct pci_mmcfg_hostbridge_probe pci_mmcfg_probes[] __initdata = {
 	  0x0369, pci_mmcfg_nvidia_mcp55 },
 };
 
-static int __init cmp_mmcfg(const void *x1, const void *x2)
-{
-	const typeof(pci_mmcfg_config[0]) *m1 = x1;
-	const typeof(pci_mmcfg_config[0]) *m2 = x2;
-	int start1, start2;
-
-	start1 = m1->start_bus_number;
-	start2 = m2->start_bus_number;
-
-	return start1 - start2;
-}
-
 static void __init pci_mmcfg_check_end_bus_number(void)
 {
-	int i;
-	typeof(pci_mmcfg_config[0]) *cfg, *cfgx;
-
-	/* sort them at first */
-	sort(pci_mmcfg_config, pci_mmcfg_config_num,
-		 sizeof(pci_mmcfg_config[0]), cmp_mmcfg, NULL);
+	struct pci_mmcfg_region *cfg, *cfgx;
 
 	/* last one*/
-	if (pci_mmcfg_config_num > 0) {
-		i = pci_mmcfg_config_num - 1;
-		cfg = &pci_mmcfg_config[i];
-		if (cfg->end_bus_number < cfg->start_bus_number)
-			cfg->end_bus_number = 255;
-	}
+	cfg = list_entry(pci_mmcfg_list.prev, typeof(*cfg), list);
+	if (cfg)
+		if (cfg->end_bus < cfg->start_bus)
+			cfg->end_bus = 255;
 
-	/* don't overlap please */
-	for (i = 0; i < pci_mmcfg_config_num - 1; i++) {
-		cfg = &pci_mmcfg_config[i];
-		cfgx = &pci_mmcfg_config[i+1];
+	if (list_is_singular(&pci_mmcfg_list))
+		return;
 
-		if (cfg->end_bus_number < cfg->start_bus_number)
-			cfg->end_bus_number = 255;
+	/* don't overlap please */
+	list_for_each_entry(cfg, &pci_mmcfg_list, list) {
+		if (cfg->end_bus < cfg->start_bus)
+			cfg->end_bus = 255;
 
-		if (cfg->end_bus_number >= cfgx->start_bus_number)
-			cfg->end_bus_number = cfgx->start_bus_number - 1;
+		cfgx = list_entry(cfg->list.next, typeof(*cfg), list);
+		if (cfg != cfgx && cfg->end_bus >= cfgx->start_bus)
+			cfg->end_bus = cfgx->start_bus - 1;
 	}
 }
 
@@ -306,8 +334,7 @@ static int __init pci_mmcfg_check_hostbridge(void)
 	if (!raw_pci_ops)
 		return 0;
 
-	pci_mmcfg_config_num = 0;
-	pci_mmcfg_config = NULL;
+	free_all_mmcfg();
 
 	for (i = 0; i < ARRAY_SIZE(pci_mmcfg_probes); i++) {
 		bus =  pci_mmcfg_probes[i].bus;
@@ -322,45 +349,22 @@ static int __init pci_mmcfg_check_hostbridge(void)
 			name = pci_mmcfg_probes[i].probe();
 
 		if (name)
-			printk(KERN_INFO "PCI: Found %s with MMCONFIG support.\n",
+			printk(KERN_INFO PREFIX "%s with MMCONFIG support\n",
 			       name);
 	}
 
 	/* some end_bus_number is crazy, fix it */
 	pci_mmcfg_check_end_bus_number();
 
-	return pci_mmcfg_config_num != 0;
+	return !list_empty(&pci_mmcfg_list);
 }
 
 static void __init pci_mmcfg_insert_resources(void)
 {
-#define PCI_MMCFG_RESOURCE_NAME_LEN 24
-	int i;
-	struct resource *res;
-	char *names;
-	unsigned num_buses;
-
-	res = kcalloc(PCI_MMCFG_RESOURCE_NAME_LEN + sizeof(*res),
-			pci_mmcfg_config_num, GFP_KERNEL);
-	if (!res) {
-		printk(KERN_ERR "PCI: Unable to allocate MMCONFIG resources\n");
-		return;
-	}
+	struct pci_mmcfg_region *cfg;
 
-	names = (void *)&res[pci_mmcfg_config_num];
-	for (i = 0; i < pci_mmcfg_config_num; i++, res++) {
-		struct acpi_mcfg_allocation *cfg = &pci_mmcfg_config[i];
-		num_buses = cfg->end_bus_number - cfg->start_bus_number + 1;
-		res->name = names;
-		snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN,
-			 "PCI MMCONFIG %u [%02x-%02x]", cfg->pci_segment,
-			 cfg->start_bus_number, cfg->end_bus_number);
-		res->start = cfg->address + (cfg->start_bus_number << 20);
-		res->end = res->start + (num_buses << 20) - 1;
-		res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-		insert_resource(&iomem_resource, res);
-		names += PCI_MMCFG_RESOURCE_NAME_LEN;
-	}
+	list_for_each_entry(cfg, &pci_mmcfg_list, list)
+		insert_resource(&iomem_resource, &cfg->res);
 
 	/* Mark that the resources have been inserted. */
 	pci_mmcfg_resources_inserted = 1;
@@ -437,11 +441,12 @@ static int __init is_acpi_reserved(u64 start, u64 end, unsigned not_used)
 typedef int (*check_reserved_t)(u64 start, u64 end, unsigned type);
 
 static int __init is_mmconf_reserved(check_reserved_t is_reserved,
-		u64 addr, u64 size, int i,
-		typeof(pci_mmcfg_config[0]) *cfg, int with_e820)
+				    struct pci_mmcfg_region *cfg, int with_e820)
 {
+	u64 addr = cfg->res.start;
+	u64 size = resource_size(&cfg->res);
 	u64 old_size = size;
-	int valid = 0;
+	int valid = 0, num_buses;
 
 	while (!is_reserved(addr, addr + size, E820_RESERVED)) {
 		size >>= 1;
@@ -450,19 +455,25 @@ static int __init is_mmconf_reserved(check_reserved_t is_reserved,
 	}
 
 	if (size >= (16UL<<20) || size == old_size) {
-		printk(KERN_NOTICE
-		       "PCI: MCFG area at %Lx reserved in %s\n",
-			addr, with_e820?"E820":"ACPI motherboard resources");
+		printk(KERN_INFO PREFIX "MMCONFIG at %pR reserved in %s\n",
+		       &cfg->res,
+		       with_e820 ? "E820" : "ACPI motherboard resources");
 		valid = 1;
 
 		if (old_size != size) {
-			/* update end_bus_number */
-			cfg->end_bus_number = cfg->start_bus_number + ((size>>20) - 1);
-			printk(KERN_NOTICE "PCI: updated MCFG configuration %d: base %lx "
-			       "segment %hu buses %u - %u\n",
-			       i, (unsigned long)cfg->address, cfg->pci_segment,
-			       (unsigned int)cfg->start_bus_number,
-			       (unsigned int)cfg->end_bus_number);
+			/* update end_bus */
+			cfg->end_bus = cfg->start_bus + ((size>>20) - 1);
+			num_buses = cfg->end_bus - cfg->start_bus + 1;
+			cfg->res.end = cfg->res.start +
+			    PCI_MMCFG_BUS_OFFSET(num_buses) - 1;
+			snprintf(cfg->name, PCI_MMCFG_RESOURCE_NAME_LEN,
+				 "PCI MMCONFIG %04x [bus %02x-%02x]",
+				 cfg->segment, cfg->start_bus, cfg->end_bus);
+			printk(KERN_INFO PREFIX
+			       "MMCONFIG for %04x [bus%02x-%02x] "
+			       "at %pR (base %#lx) (size reduced!)\n",
+			       cfg->segment, cfg->start_bus, cfg->end_bus,
+			       &cfg->res, (unsigned long) cfg->address);
 		}
 	}
 
@@ -471,45 +482,26 @@ static int __init is_mmconf_reserved(check_reserved_t is_reserved,
 
 static void __init pci_mmcfg_reject_broken(int early)
 {
-	typeof(pci_mmcfg_config[0]) *cfg;
-	int i;
+	struct pci_mmcfg_region *cfg;
 
-	if ((pci_mmcfg_config_num == 0) ||
-	    (pci_mmcfg_config == NULL) ||
-	    (pci_mmcfg_config[0].address == 0))
-		return;
-
-	for (i = 0; i < pci_mmcfg_config_num; i++) {
+	list_for_each_entry(cfg, &pci_mmcfg_list, list) {
 		int valid = 0;
-		u64 addr, size;
-
-		cfg = &pci_mmcfg_config[i];
-		addr = cfg->start_bus_number;
-		addr <<= 20;
-		addr += cfg->address;
-		size = cfg->end_bus_number + 1 - cfg->start_bus_number;
-		size <<= 20;
-		printk(KERN_NOTICE "PCI: MCFG configuration %d: base %lx "
-		       "segment %hu buses %u - %u\n",
-		       i, (unsigned long)cfg->address, cfg->pci_segment,
-		       (unsigned int)cfg->start_bus_number,
-		       (unsigned int)cfg->end_bus_number);
 
 		if (!early && !acpi_disabled)
-			valid = is_mmconf_reserved(is_acpi_reserved, addr, size, i, cfg, 0);
+			valid = is_mmconf_reserved(is_acpi_reserved, cfg, 0);
 
 		if (valid)
 			continue;
 
 		if (!early)
-			printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %Lx is not"
-			       " reserved in ACPI motherboard resources\n",
-			       cfg->address);
+			printk(KERN_ERR FW_BUG PREFIX
+			       "MMCONFIG at %pR not reserved in "
+			       "ACPI motherboard resources\n", &cfg->res);
 
 		/* Don't try to do this check unless configuration
 		   type 1 is available. how about type 2 ?*/
 		if (raw_pci_ops)
-			valid = is_mmconf_reserved(e820_all_mapped, addr, size, i, cfg, 1);
+			valid = is_mmconf_reserved(e820_all_mapped, cfg, 1);
 
 		if (!valid)
 			goto reject;
@@ -518,34 +510,41 @@ static void __init pci_mmcfg_reject_broken(int early)
 	return;
 
 reject:
-	printk(KERN_INFO "PCI: Not using MMCONFIG.\n");
-	pci_mmcfg_arch_free();
-	kfree(pci_mmcfg_config);
-	pci_mmcfg_config = NULL;
-	pci_mmcfg_config_num = 0;
+	printk(KERN_INFO PREFIX "not using MMCONFIG\n");
+	free_all_mmcfg();
 }
 
 static int __initdata known_bridge;
 
-static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
+static int __init acpi_mcfg_check_entry(struct acpi_table_mcfg *mcfg,
+					struct acpi_mcfg_allocation *cfg)
+{
+	int year;
 
-/* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
-struct acpi_mcfg_allocation *pci_mmcfg_config;
-int pci_mmcfg_config_num;
+	if (cfg->address < 0xFFFFFFFF)
+		return 0;
 
-static int __init acpi_mcfg_oem_check(struct acpi_table_mcfg *mcfg)
-{
 	if (!strcmp(mcfg->header.oem_id, "SGI"))
-		acpi_mcfg_64bit_base_addr = TRUE;
+		return 0;
 
-	return 0;
+	if (mcfg->header.revision >= 1) {
+		if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) &&
+		    year >= 2010)
+			return 0;
+	}
+
+	printk(KERN_ERR PREFIX "MCFG region for %04x [bus %02x-%02x] at %#llx "
+	       "is above 4GB, ignored\n", cfg->pci_segment,
+	       cfg->start_bus_number, cfg->end_bus_number, cfg->address);
+	return -EINVAL;
 }
 
 static int __init pci_parse_mcfg(struct acpi_table_header *header)
 {
 	struct acpi_table_mcfg *mcfg;
+	struct acpi_mcfg_allocation *cfg_table, *cfg;
 	unsigned long i;
-	int config_size;
+	int entries;
 
 	if (!header)
 		return -EINVAL;
@@ -553,38 +552,33 @@ static int __init pci_parse_mcfg(struct acpi_table_header *header)
 	mcfg = (struct acpi_table_mcfg *)header;
 
 	/* how many config structures do we have */
-	pci_mmcfg_config_num = 0;
+	free_all_mmcfg();
+	entries = 0;
 	i = header->length - sizeof(struct acpi_table_mcfg);
 	while (i >= sizeof(struct acpi_mcfg_allocation)) {
-		++pci_mmcfg_config_num;
+		entries++;
 		i -= sizeof(struct acpi_mcfg_allocation);
 	};
-	if (pci_mmcfg_config_num == 0) {
+	if (entries == 0) {
 		printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
 		return -ENODEV;
 	}
 
-	config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
-	pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
-	if (!pci_mmcfg_config) {
-		printk(KERN_WARNING PREFIX
-		       "No memory for MCFG config tables\n");
-		return -ENOMEM;
-	}
-
-	memcpy(pci_mmcfg_config, &mcfg[1], config_size);
-
-	acpi_mcfg_oem_check(mcfg);
-
-	for (i = 0; i < pci_mmcfg_config_num; ++i) {
-		if ((pci_mmcfg_config[i].address > 0xFFFFFFFF) &&
-		    !acpi_mcfg_64bit_base_addr) {
-			printk(KERN_ERR PREFIX
-			       "MMCONFIG not in low 4GB of memory\n");
-			kfree(pci_mmcfg_config);
-			pci_mmcfg_config_num = 0;
+	cfg_table = (struct acpi_mcfg_allocation *) &mcfg[1];
+	for (i = 0; i < entries; i++) {
+		cfg = &cfg_table[i];
+		if (acpi_mcfg_check_entry(mcfg, cfg)) {
+			free_all_mmcfg();
 			return -ENODEV;
 		}
+
+		if (pci_mmconfig_add(cfg->pci_segment, cfg->start_bus_number,
+				   cfg->end_bus_number, cfg->address) == NULL) {
+			printk(KERN_WARNING PREFIX
+			       "no memory for MCFG entries\n");
+			free_all_mmcfg();
+			return -ENOMEM;
+		}
 	}
 
 	return 0;
@@ -614,9 +608,7 @@ static void __init __pci_mmcfg_init(int early)
 
 	pci_mmcfg_reject_broken(early);
 
-	if ((pci_mmcfg_config_num == 0) ||
-	    (pci_mmcfg_config == NULL) ||
-	    (pci_mmcfg_config[0].address == 0))
+	if (list_empty(&pci_mmcfg_list))
 		return;
 
 	if (pci_mmcfg_arch_init())
@@ -648,9 +640,7 @@ static int __init pci_mmcfg_late_insert_resources(void)
 	 */
 	if ((pci_mmcfg_resources_inserted == 1) ||
 	    (pci_probe & PCI_PROBE_MMCONF) == 0 ||
-	    (pci_mmcfg_config_num == 0) ||
-	    (pci_mmcfg_config == NULL) ||
-	    (pci_mmcfg_config[0].address == 0))
+	    list_empty(&pci_mmcfg_list))
 		return 1;
 
 	/*

arch/x86/pci/mmconfig_32.c

@@ -27,18 +27,10 @@ static int mmcfg_last_accessed_cpu;
  */
 static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn)
 {
-	struct acpi_mcfg_allocation *cfg;
-	int cfg_num;
-
-	for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) {
-		cfg = &pci_mmcfg_config[cfg_num];
-		if (cfg->pci_segment == seg &&
-		    (cfg->start_bus_number <= bus) &&
-		    (cfg->end_bus_number >= bus))
-			return cfg->address;
-	}
+	struct pci_mmcfg_region *cfg = pci_mmconfig_lookup(seg, bus);
 
-	/* Fall back to type 0 */
+	if (cfg)
+		return cfg->address;
 	return 0;
 }
 
@@ -47,7 +39,7 @@ static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn)
  */
 static void pci_exp_set_dev_base(unsigned int base, int bus, int devfn)
 {
-	u32 dev_base = base | (bus << 20) | (devfn << 12);
+	u32 dev_base = base | PCI_MMCFG_BUS_OFFSET(bus) | (devfn << 12);
 	int cpu = smp_processor_id();
 	if (dev_base != mmcfg_last_accessed_device ||
 	    cpu != mmcfg_last_accessed_cpu) {

arch/x86/pci/mmconfig_64.c

@@ -12,38 +12,15 @@
 #include <asm/e820.h>
 #include <asm/pci_x86.h>
 
-/* Static virtual mapping of the MMCONFIG aperture */
-struct mmcfg_virt {
-	struct acpi_mcfg_allocation *cfg;
-	char __iomem *virt;
-};
-static struct mmcfg_virt *pci_mmcfg_virt;
-
-static char __iomem *get_virt(unsigned int seg, unsigned bus)
-{
-	struct acpi_mcfg_allocation *cfg;
-	int cfg_num;
-
-	for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) {
-		cfg = pci_mmcfg_virt[cfg_num].cfg;
-		if (cfg->pci_segment == seg &&
-		    (cfg->start_bus_number <= bus) &&
-		    (cfg->end_bus_number >= bus))
-			return pci_mmcfg_virt[cfg_num].virt;
-	}
-
-	/* Fall back to type 0 */
-	return NULL;
-}
+#define PREFIX "PCI: "
 
 static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn)
 {
-	char __iomem *addr;
+	struct pci_mmcfg_region *cfg = pci_mmconfig_lookup(seg, bus);
 
-	addr = get_virt(seg, bus);
-	if (!addr)
-		return NULL;
- 	return addr + ((bus << 20) | (devfn << 12));
+	if (cfg && cfg->virt)
+		return cfg->virt + (PCI_MMCFG_BUS_OFFSET(bus) | (devfn << 12));
+	return NULL;
 }
 
 static int pci_mmcfg_read(unsigned int seg, unsigned int bus,
@@ -109,42 +86,30 @@ static struct pci_raw_ops pci_mmcfg = {
 	.write =	pci_mmcfg_write,
 };
 
-static void __iomem * __init mcfg_ioremap(struct acpi_mcfg_allocation *cfg)
+static void __iomem * __init mcfg_ioremap(struct pci_mmcfg_region *cfg)
 {
 	void __iomem *addr;
 	u64 start, size;
+	int num_buses;
 
-	start = cfg->start_bus_number;
-	start <<= 20;
-	start += cfg->address;
-	size = cfg->end_bus_number + 1 - cfg->start_bus_number;
-	size <<= 20;
+	start = cfg->address + PCI_MMCFG_BUS_OFFSET(cfg->start_bus);
+	num_buses = cfg->end_bus - cfg->start_bus + 1;
+	size = PCI_MMCFG_BUS_OFFSET(num_buses);
 	addr = ioremap_nocache(start, size);
-	if (addr) {
-		printk(KERN_INFO "PCI: Using MMCONFIG at %Lx - %Lx\n",
-		       start, start + size - 1);
-		addr -= cfg->start_bus_number << 20;
-	}
+	if (addr)
+		addr -= PCI_MMCFG_BUS_OFFSET(cfg->start_bus);
 	return addr;
 }
 
 int __init pci_mmcfg_arch_init(void)
 {
-	int i;
-	pci_mmcfg_virt = kzalloc(sizeof(*pci_mmcfg_virt) *
-				 pci_mmcfg_config_num, GFP_KERNEL);
-	if (pci_mmcfg_virt == NULL) {
-		printk(KERN_ERR "PCI: Can not allocate memory for mmconfig structures\n");
-		return 0;
-	}
+	struct pci_mmcfg_region *cfg;
 
-	for (i = 0; i < pci_mmcfg_config_num; ++i) {
-		pci_mmcfg_virt[i].cfg = &pci_mmcfg_config[i];
-		pci_mmcfg_virt[i].virt = mcfg_ioremap(&pci_mmcfg_config[i]);
-		if (!pci_mmcfg_virt[i].virt) {
-			printk(KERN_ERR "PCI: Cannot map mmconfig aperture for "
-					"segment %d\n",
-				pci_mmcfg_config[i].pci_segment);
+	list_for_each_entry(cfg, &pci_mmcfg_list, list) {
+		cfg->virt = mcfg_ioremap(cfg);
+		if (!cfg->virt) {
+			printk(KERN_ERR PREFIX "can't map MMCONFIG at %pR\n",
+			       &cfg->res);
 			pci_mmcfg_arch_free();
 			return 0;
 		}
@@ -155,19 +120,12 @@ int __init pci_mmcfg_arch_init(void)
 
 void __init pci_mmcfg_arch_free(void)
 {
-	int i;
-
-	if (pci_mmcfg_virt == NULL)
-		return;
+	struct pci_mmcfg_region *cfg;
 
-	for (i = 0; i < pci_mmcfg_config_num; ++i) {
-		if (pci_mmcfg_virt[i].virt) {
-			iounmap(pci_mmcfg_virt[i].virt + (pci_mmcfg_virt[i].cfg->start_bus_number << 20));
-			pci_mmcfg_virt[i].virt = NULL;
-			pci_mmcfg_virt[i].cfg = NULL;
+	list_for_each_entry(cfg, &pci_mmcfg_list, list) {
+		if (cfg->virt) {
+			iounmap(cfg->virt + PCI_MMCFG_BUS_OFFSET(cfg->start_bus));
+			cfg->virt = NULL;
 		}
 	}
-
-	kfree(pci_mmcfg_virt);
-	pci_mmcfg_virt = NULL;
 }

arch/x86/xen/enlighten.c

@@ -27,7 +27,9 @@
 #include <linux/page-flags.h>
 #include <linux/highmem.h>
 #include <linux/console.h>
+#include <linux/pci.h>
 
+#include <xen/xen.h>
 #include <xen/interface/xen.h>
 #include <xen/interface/version.h>
 #include <xen/interface/physdev.h>
@@ -1175,7 +1177,11 @@ asmlinkage void __init xen_start_kernel(void)
 		add_preferred_console("xenboot", 0, NULL);
 		add_preferred_console("tty", 0, NULL);
 		add_preferred_console("hvc", 0, NULL);
+	} else {
+		/* Make sure ACS will be enabled */
+		pci_request_acs();
 	}
+		
 
 	xen_raw_console_write("about to get started...\n");
 

drivers/acpi/Makefile

@@ -19,6 +19,7 @@ obj-y				+= acpi.o \
 
 # All the builtin files are in the "acpi." module_param namespace.
 acpi-y				+= osl.o utils.o reboot.o
+acpi-y				+= hest.o
 
 # sleep related files
 acpi-y				+= wakeup.o

drivers/acpi/hest.c

@@ -0,0 +1,135 @@
+#include <linux/acpi.h>
+#include <linux/pci.h>
+
+#define PREFIX "ACPI: "
+
+static inline unsigned long parse_acpi_hest_ia_machine_check(struct acpi_hest_ia_machine_check *p)
+{
+	return sizeof(*p) +
+		(sizeof(struct acpi_hest_ia_error_bank) * p->num_hardware_banks);
+}
+
+static inline unsigned long parse_acpi_hest_ia_corrected(struct acpi_hest_ia_corrected *p)
+{
+	return sizeof(*p) +
+		(sizeof(struct acpi_hest_ia_error_bank) * p->num_hardware_banks);
+}
+
+static inline unsigned long parse_acpi_hest_ia_nmi(struct acpi_hest_ia_nmi *p)
+{
+	return sizeof(*p);
+}
+
+static inline unsigned long parse_acpi_hest_generic(struct acpi_hest_generic *p)
+{
+	return sizeof(*p);
+}
+
+static inline unsigned int hest_match_pci(struct acpi_hest_aer_common *p, struct pci_dev *pci)
+{
+	return	(0           == pci_domain_nr(pci->bus) &&
+		 p->bus      == pci->bus->number &&
+		 p->device   == PCI_SLOT(pci->devfn) &&
+		 p->function == PCI_FUNC(pci->devfn));
+}
+
+static unsigned long parse_acpi_hest_aer(void *hdr, int type, struct pci_dev *pci, int *firmware_first)
+{
+	struct acpi_hest_aer_common *p = hdr + sizeof(struct acpi_hest_header);
+	unsigned long rc=0;
+	u8 pcie_type = 0;
+	u8 bridge = 0;
+	switch (type) {
+	case ACPI_HEST_TYPE_AER_ROOT_PORT:
+		rc = sizeof(struct acpi_hest_aer_root);
+		pcie_type = PCI_EXP_TYPE_ROOT_PORT;
+		break;
+	case ACPI_HEST_TYPE_AER_ENDPOINT:
+		rc = sizeof(struct acpi_hest_aer);
+		pcie_type = PCI_EXP_TYPE_ENDPOINT;
+		break;
+	case ACPI_HEST_TYPE_AER_BRIDGE:
+		rc = sizeof(struct acpi_hest_aer_bridge);
+		if ((pci->class >> 16) == PCI_BASE_CLASS_BRIDGE)
+			bridge = 1;
+		break;
+	}
+
+	if (p->flags & ACPI_HEST_GLOBAL) {
+		if ((pci->is_pcie && (pci->pcie_type == pcie_type)) || bridge)
+			*firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
+	}
+	else
+		if (hest_match_pci(p, pci))
+			*firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
+	return rc;
+}
+
+static int acpi_hest_firmware_first(struct acpi_table_header *stdheader, struct pci_dev *pci)
+{
+	struct acpi_table_hest *hest = (struct acpi_table_hest *)stdheader;
+	void *p = (void *)hest + sizeof(*hest); /* defined by the ACPI 4.0 spec */
+	struct acpi_hest_header *hdr = p;
+
+	int i;
+	int firmware_first = 0;
+	static unsigned char printed_unused = 0;
+	static unsigned char printed_reserved = 0;
+
+	for (i=0, hdr=p; p < (((void *)hest) + hest->header.length) && i < hest->error_source_count; i++) {
+		switch (hdr->type) {
+		case ACPI_HEST_TYPE_IA32_CHECK:
+			p += parse_acpi_hest_ia_machine_check(p);
+			break;
+		case ACPI_HEST_TYPE_IA32_CORRECTED_CHECK:
+			p += parse_acpi_hest_ia_corrected(p);
+			break;
+		case ACPI_HEST_TYPE_IA32_NMI:
+			p += parse_acpi_hest_ia_nmi(p);
+			break;
+		/* These three should never appear */
+		case ACPI_HEST_TYPE_NOT_USED3:
+		case ACPI_HEST_TYPE_NOT_USED4:
+		case ACPI_HEST_TYPE_NOT_USED5:
+			if (!printed_unused) {
+				printk(KERN_DEBUG PREFIX
+				       "HEST Error Source list contains an obsolete type (%d).\n", hdr->type);
+				printed_unused = 1;
+			}
+			break;
+		case ACPI_HEST_TYPE_AER_ROOT_PORT:
+		case ACPI_HEST_TYPE_AER_ENDPOINT:
+		case ACPI_HEST_TYPE_AER_BRIDGE:
+			p += parse_acpi_hest_aer(p, hdr->type, pci, &firmware_first);
+			break;
+		case ACPI_HEST_TYPE_GENERIC_ERROR:
+			p += parse_acpi_hest_generic(p);
+			break;
+		/* These should never appear either */
+		case ACPI_HEST_TYPE_RESERVED:
+		default:
+			if (!printed_reserved) {
+				printk(KERN_DEBUG PREFIX
+				       "HEST Error Source list contains a reserved type (%d).\n", hdr->type);
+				printed_reserved = 1;
+			}
+			break;
+		}
+	}
+	return firmware_first;
+}
+
+int acpi_hest_firmware_first_pci(struct pci_dev *pci)
+{
+	acpi_status status = AE_NOT_FOUND;
+	struct acpi_table_header *hest = NULL;
+	status = acpi_get_table(ACPI_SIG_HEST, 1, &hest);
+
+	if (ACPI_SUCCESS(status)) {
+		if (acpi_hest_firmware_first(hest, pci)) {
+			return 1;
+		}
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_hest_firmware_first_pci);

drivers/block/xen-blkfront.c

@@ -42,6 +42,7 @@
 #include <linux/module.h>
 #include <linux/scatterlist.h>
 
+#include <xen/xen.h>
 #include <xen/xenbus.h>
 #include <xen/grant_table.h>
 #include <xen/events.h>

drivers/char/hvc_xen.c

@@ -25,6 +25,8 @@
 #include <linux/types.h>
 
 #include <asm/xen/hypervisor.h>
+
+#include <xen/xen.h>
 #include <xen/page.h>
 #include <xen/events.h>
 #include <xen/interface/io/console.h>

drivers/input/xen-kbdfront.c

@@ -21,7 +21,10 @@
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/input.h>
+
 #include <asm/xen/hypervisor.h>
+
+#include <xen/xen.h>
 #include <xen/events.h>
 #include <xen/page.h>
 #include <xen/interface/io/fbif.h>

drivers/net/xen-netfront.c

@@ -42,6 +42,7 @@
 #include <linux/mm.h>
 #include <net/ip.h>
 
+#include <xen/xen.h>
 #include <xen/xenbus.h>
 #include <xen/events.h>
 #include <xen/page.h>

drivers/pci/Kconfig

@@ -27,10 +27,10 @@ config PCI_LEGACY
 	default y
 	help
 	  Say Y here if you want to include support for the deprecated
-	  pci_find_slot() and pci_find_device() APIs.  Most drivers have
-	  been converted over to using the proper hotplug APIs, so this
-	  option serves to include/exclude only a few drivers that are
-	  still using this API.
+	  pci_find_device() API.  Most drivers have been converted over
+	  to using the proper hotplug APIs, so this option serves to
+	  include/exclude only a few drivers that are still using this
+	  API.
 
 config PCI_DEBUG
 	bool "PCI Debugging"
@@ -69,3 +69,10 @@ config PCI_IOV
 	  physical resources.
 
 	  If unsure, say N.
+
+config PCI_IOAPIC
+	bool
+	depends on PCI
+	depends on ACPI
+	depends on HOTPLUG
+	default y

drivers/pci/Makefile

@@ -14,6 +14,8 @@ CFLAGS_legacy.o += -Wno-deprecated-declarations
 # Build PCI Express stuff if needed
 obj-$(CONFIG_PCIEPORTBUS) += pcie/
 
+obj-$(CONFIG_PCI_IOAPIC) += ioapic.o
+
 obj-$(CONFIG_HOTPLUG) += hotplug.o
 
 # Build the PCI Hotplug drivers if we were asked to

drivers/pci/dmar.c

@@ -320,7 +320,7 @@ found:
 	for (bus = dev->bus; bus; bus = bus->parent) {
 		struct pci_dev *bridge = bus->self;
 
-		if (!bridge || !bridge->is_pcie ||
+		if (!bridge || !pci_is_pcie(bridge) ||
 		    bridge->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE)
 			return 0;
 
@@ -645,8 +645,11 @@ void __init detect_intel_iommu(void)
 			       "x2apic and Intr-remapping.\n");
 #endif
 #ifdef CONFIG_DMAR
-		if (ret && !no_iommu && !iommu_detected && !dmar_disabled)
+		if (ret && !no_iommu && !iommu_detected && !dmar_disabled) {
 			iommu_detected = 1;
+			/* Make sure ACS will be enabled */
+			pci_request_acs();
+		}
 #endif
 #ifdef CONFIG_X86
 		if (ret)

drivers/pci/hotplug/Makefile

@@ -6,18 +6,22 @@ obj-$(CONFIG_HOTPLUG_PCI)		+= pci_hotplug.o
 obj-$(CONFIG_HOTPLUG_PCI_COMPAQ)	+= cpqphp.o
 obj-$(CONFIG_HOTPLUG_PCI_IBM)		+= ibmphp.o
 
-# pciehp should be linked before acpiphp in order to allow the native driver
-# to attempt to bind first. We can then fall back to generic support.
+# native drivers should be linked before acpiphp in order to allow the
+# native driver to attempt to bind first. We can then fall back to
+# generic support.
 
 obj-$(CONFIG_HOTPLUG_PCI_PCIE)		+= pciehp.o
-obj-$(CONFIG_HOTPLUG_PCI_ACPI)		+= acpiphp.o
-obj-$(CONFIG_HOTPLUG_PCI_ACPI_IBM)	+= acpiphp_ibm.o
 obj-$(CONFIG_HOTPLUG_PCI_CPCI_ZT5550)	+= cpcihp_zt5550.o
 obj-$(CONFIG_HOTPLUG_PCI_CPCI_GENERIC)	+= cpcihp_generic.o
 obj-$(CONFIG_HOTPLUG_PCI_SHPC)		+= shpchp.o
 obj-$(CONFIG_HOTPLUG_PCI_RPA)		+= rpaphp.o
 obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR)	+= rpadlpar_io.o
 obj-$(CONFIG_HOTPLUG_PCI_SGI)		+= sgi_hotplug.o
+obj-$(CONFIG_HOTPLUG_PCI_ACPI)		+= acpiphp.o
+
+# acpiphp_ibm extends acpiphp, so should be linked afterwards.
+
+obj-$(CONFIG_HOTPLUG_PCI_ACPI_IBM)	+= acpiphp_ibm.o
 
 # Link this last so it doesn't claim devices that have a real hotplug driver
 obj-$(CONFIG_HOTPLUG_PCI_FAKE)		+= fakephp.o

drivers/pci/hotplug/acpi_pcihp.c

@@ -362,6 +362,8 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev, u32 flags)
 		status = acpi_pci_osc_control_set(handle, flags);
 		if (ACPI_SUCCESS(status))
 			goto got_one;
+		if (status == AE_SUPPORT)
+			goto no_control;
 		kfree(string.pointer);
 		string = (struct acpi_buffer){ ACPI_ALLOCATE_BUFFER, NULL };
 	}
@@ -394,10 +396,9 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev, u32 flags)
 		if (ACPI_FAILURE(status))
 			break;
 	}
-
+no_control:
 	dbg("Cannot get control of hotplug hardware for pci %s\n",
 	    pci_name(pdev));
-
 	kfree(string.pointer);
 	return -ENODEV;
 got_one:

drivers/pci/hotplug/acpiphp.h

@@ -146,12 +146,6 @@ struct acpiphp_attention_info
 	struct module *owner;
 };
 
-struct acpiphp_ioapic {
-	struct pci_dev *dev;
-	u32 gsi_base;
-	struct list_head list;
-};
-
 /* PCI bus bridge HID */
 #define ACPI_PCI_HOST_HID		"PNP0A03"
 

drivers/pci/hotplug/acpiphp_glue.c

@@ -52,8 +52,6 @@
 #include "acpiphp.h"
 
 static LIST_HEAD(bridge_list);
-static LIST_HEAD(ioapic_list);
-static DEFINE_SPINLOCK(ioapic_list_lock);
 
 #define MY_NAME "acpiphp_glue"
 
@@ -311,17 +309,13 @@ static void init_bridge_misc(struct acpiphp_bridge *bridge)
 /* find acpiphp_func from acpiphp_bridge */
 static struct acpiphp_func *acpiphp_bridge_handle_to_function(acpi_handle handle)
 {
-	struct list_head *node, *l;
 	struct acpiphp_bridge *bridge;
 	struct acpiphp_slot *slot;
 	struct acpiphp_func *func;
 
-	list_for_each(node, &bridge_list) {
-		bridge = list_entry(node, struct acpiphp_bridge, list);
+	list_for_each_entry(bridge, &bridge_list, list) {
 		for (slot = bridge->slots; slot; slot = slot->next) {
-			list_for_each(l, &slot->funcs) {
-				func = list_entry(l, struct acpiphp_func,
-							sibling);
+			list_for_each_entry(func, &slot->funcs, sibling) {
 				if (func->handle == handle)
 					return func;
 			}
@@ -495,21 +489,19 @@ static int add_bridge(acpi_handle handle)
 
 static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle)
 {
-	struct list_head *head;
-	list_for_each(head, &bridge_list) {
-		struct acpiphp_bridge *bridge = list_entry(head,
-						struct acpiphp_bridge, list);
+	struct acpiphp_bridge *bridge;
+
+	list_for_each_entry(bridge, &bridge_list, list)
 		if (bridge->handle == handle)
 			return bridge;
-	}
 
 	return NULL;
 }
 
 static void cleanup_bridge(struct acpiphp_bridge *bridge)
 {
-	struct list_head *list, *tmp;
-	struct acpiphp_slot *slot;
+	struct acpiphp_slot *slot, *next;
+	struct acpiphp_func *func, *tmp;
 	acpi_status status;
 	acpi_handle handle = bridge->handle;
 
@@ -530,10 +522,8 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
 
 	slot = bridge->slots;
 	while (slot) {
-		struct acpiphp_slot *next = slot->next;
-		list_for_each_safe (list, tmp, &slot->funcs) {
-			struct acpiphp_func *func;
-			func = list_entry(list, struct acpiphp_func, sibling);
+		next = slot->next;
+		list_for_each_entry_safe(func, tmp, &slot->funcs, sibling) {
 			if (is_dock_device(func->handle)) {
 				unregister_hotplug_dock_device(func->handle);
 				unregister_dock_notifier(&func->nb);
@@ -545,7 +535,7 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
 				if (ACPI_FAILURE(status))
 					err("failed to remove notify handler\n");
 			}
-			list_del(list);
+			list_del(&func->sibling);
 			kfree(func);
 		}
 		acpiphp_unregister_hotplug_slot(slot);
@@ -606,204 +596,17 @@ static void remove_bridge(acpi_handle handle)
 					   handle_hotplug_event_bridge);
 }
 
-static struct pci_dev * get_apic_pci_info(acpi_handle handle)
-{
-	struct pci_dev *dev;
-
-	dev = acpi_get_pci_dev(handle);
-	if (!dev)
-		return NULL;
-
-	if ((dev->class != PCI_CLASS_SYSTEM_PIC_IOAPIC) &&
-	    (dev->class != PCI_CLASS_SYSTEM_PIC_IOXAPIC))
-	{
-		pci_dev_put(dev);
-		return NULL;
-	}
-
-	return dev;
-}
-
-static int get_gsi_base(acpi_handle handle, u32 *gsi_base)
-{
-	acpi_status status;
-	int result = -1;
-	unsigned long long gsb;
-	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-	union acpi_object *obj;
-	void *table;
-
-	status = acpi_evaluate_integer(handle, "_GSB", NULL, &gsb);
-	if (ACPI_SUCCESS(status)) {
-		*gsi_base = (u32)gsb;
-		return 0;
-	}
-
-	status = acpi_evaluate_object(handle, "_MAT", NULL, &buffer);
-	if (ACPI_FAILURE(status) || !buffer.length || !buffer.pointer)
-		return -1;
-
-	obj = buffer.pointer;
-	if (obj->type != ACPI_TYPE_BUFFER)
-		goto out;
-
-	table = obj->buffer.pointer;
-	switch (((struct acpi_subtable_header *)table)->type) {
-	case ACPI_MADT_TYPE_IO_SAPIC:
-		*gsi_base = ((struct acpi_madt_io_sapic *)table)->global_irq_base;
-		result = 0;
-		break;
-	case ACPI_MADT_TYPE_IO_APIC:
-		*gsi_base = ((struct acpi_madt_io_apic *)table)->global_irq_base;
-		result = 0;
-		break;
-	default:
-		break;
-	}
- out:
-	kfree(buffer.pointer);
-	return result;
-}
-
-static acpi_status
-ioapic_add(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
-	acpi_status status;
-	unsigned long long sta;
-	acpi_handle tmp;
-	struct pci_dev *pdev;
-	u32 gsi_base;
-	u64 phys_addr;
-	struct acpiphp_ioapic *ioapic;
-
-	/* Evaluate _STA if present */
-	status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-	if (ACPI_SUCCESS(status) && sta != ACPI_STA_ALL)
-		return AE_CTRL_DEPTH;
-
-	/* Scan only PCI bus scope */
-	status = acpi_get_handle(handle, "_HID", &tmp);
-	if (ACPI_SUCCESS(status))
-		return AE_CTRL_DEPTH;
-
-	if (get_gsi_base(handle, &gsi_base))
-		return AE_OK;
-
-	ioapic = kmalloc(sizeof(*ioapic), GFP_KERNEL);
-	if (!ioapic)
-		return AE_NO_MEMORY;
-
-	pdev = get_apic_pci_info(handle);
-	if (!pdev)
-		goto exit_kfree;
-
-	if (pci_enable_device(pdev))
-		goto exit_pci_dev_put;
-
-	pci_set_master(pdev);
-
-	if (pci_request_region(pdev, 0, "I/O APIC(acpiphp)"))
-		goto exit_pci_disable_device;
-
-	phys_addr = pci_resource_start(pdev, 0);
-	if (acpi_register_ioapic(handle, phys_addr, gsi_base))
-		goto exit_pci_release_region;
-
-	ioapic->gsi_base = gsi_base;
-	ioapic->dev = pdev;
-	spin_lock(&ioapic_list_lock);
-	list_add_tail(&ioapic->list, &ioapic_list);
-	spin_unlock(&ioapic_list_lock);
-
-	return AE_OK;
-
- exit_pci_release_region:
-	pci_release_region(pdev, 0);
- exit_pci_disable_device:
-	pci_disable_device(pdev);
- exit_pci_dev_put:
-	pci_dev_put(pdev);
- exit_kfree:
-	kfree(ioapic);
-
-	return AE_OK;
-}
-
-static acpi_status
-ioapic_remove(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
-	acpi_status status;
-	unsigned long long sta;
-	acpi_handle tmp;
-	u32 gsi_base;
-	struct acpiphp_ioapic *pos, *n, *ioapic = NULL;
-
-	/* Evaluate _STA if present */
-	status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-	if (ACPI_SUCCESS(status) && sta != ACPI_STA_ALL)
-		return AE_CTRL_DEPTH;
-
-	/* Scan only PCI bus scope */
-	status = acpi_get_handle(handle, "_HID", &tmp);
-	if (ACPI_SUCCESS(status))
-		return AE_CTRL_DEPTH;
-
-	if (get_gsi_base(handle, &gsi_base))
-		return AE_OK;
-
-	acpi_unregister_ioapic(handle, gsi_base);
-
-	spin_lock(&ioapic_list_lock);
-	list_for_each_entry_safe(pos, n, &ioapic_list, list) {
-		if (pos->gsi_base != gsi_base)
-			continue;
-		ioapic = pos;
-		list_del(&ioapic->list);
-		break;
-	}
-	spin_unlock(&ioapic_list_lock);
-
-	if (!ioapic)
-		return AE_OK;
-
-	pci_release_region(ioapic->dev, 0);
-	pci_disable_device(ioapic->dev);
-	pci_dev_put(ioapic->dev);
-	kfree(ioapic);
-
-	return AE_OK;
-}
-
-static int acpiphp_configure_ioapics(acpi_handle handle)
-{
-	ioapic_add(handle, 0, NULL, NULL);
-	acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
-			    ACPI_UINT32_MAX, ioapic_add, NULL, NULL, NULL);
-	return 0;
-}
-
-static int acpiphp_unconfigure_ioapics(acpi_handle handle)
-{
-	ioapic_remove(handle, 0, NULL, NULL);
-	acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
-			    ACPI_UINT32_MAX, ioapic_remove, NULL, NULL, NULL);
-	return 0;
-}
-
 static int power_on_slot(struct acpiphp_slot *slot)
 {
 	acpi_status status;
 	struct acpiphp_func *func;
-	struct list_head *l;
 	int retval = 0;
 
 	/* if already enabled, just skip */
 	if (slot->flags & SLOT_POWEREDON)
 		goto err_exit;
 
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
-
+	list_for_each_entry(func, &slot->funcs, sibling) {
 		if (func->flags & FUNC_HAS_PS0) {
 			dbg("%s: executing _PS0\n", __func__);
 			status = acpi_evaluate_object(func->handle, "_PS0", NULL, NULL);
@@ -829,7 +632,6 @@ static int power_off_slot(struct acpiphp_slot *slot)
 {
 	acpi_status status;
 	struct acpiphp_func *func;
-	struct list_head *l;
 
 	int retval = 0;
 
@@ -837,9 +639,7 @@ static int power_off_slot(struct acpiphp_slot *slot)
 	if ((slot->flags & SLOT_POWEREDON) == 0)
 		goto err_exit;
 
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
-
+	list_for_each_entry(func, &slot->funcs, sibling) {
 		if (func->flags & FUNC_HAS_PS3) {
 			status = acpi_evaluate_object(func->handle, "_PS3", NULL, NULL);
 			if (ACPI_FAILURE(status)) {
@@ -966,7 +766,6 @@ static int __ref enable_device(struct acpiphp_slot *slot)
 {
 	struct pci_dev *dev;
 	struct pci_bus *bus = slot->bridge->pci_bus;
-	struct list_head *l;
 	struct acpiphp_func *func;
 	int retval = 0;
 	int num, max, pass;
@@ -1006,21 +805,16 @@ static int __ref enable_device(struct acpiphp_slot *slot)
 		}
 	}
 
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
+	list_for_each_entry(func, &slot->funcs, sibling)
 		acpiphp_bus_add(func);
-	}
 
 	pci_bus_assign_resources(bus);
 	acpiphp_sanitize_bus(bus);
 	acpiphp_set_hpp_values(bus);
-	list_for_each_entry(func, &slot->funcs, sibling)
-		acpiphp_configure_ioapics(func->handle);
 	pci_enable_bridges(bus);
 	pci_bus_add_devices(bus);
 
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
+	list_for_each_entry(func, &slot->funcs, sibling) {
 		dev = pci_get_slot(bus, PCI_DEVFN(slot->device,
 						  func->function));
 		if (!dev)
@@ -1091,7 +885,6 @@ static int disable_device(struct acpiphp_slot *slot)
 	}
 
 	list_for_each_entry(func, &slot->funcs, sibling) {
-		acpiphp_unconfigure_ioapics(func->handle);
 		acpiphp_bus_trim(func->handle);
 	}
 
@@ -1119,12 +912,9 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
 	acpi_status status;
 	unsigned long long sta = 0;
 	u32 dvid;
-	struct list_head *l;
 	struct acpiphp_func *func;
 
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
-
+	list_for_each_entry(func, &slot->funcs, sibling) {
 		if (func->flags & FUNC_HAS_STA) {
 			status = acpi_evaluate_integer(func->handle, "_STA", NULL, &sta);
 			if (ACPI_SUCCESS(status) && sta)
@@ -1152,13 +942,10 @@ int acpiphp_eject_slot(struct acpiphp_slot *slot)
 {
 	acpi_status status;
 	struct acpiphp_func *func;
-	struct list_head *l;
 	struct acpi_object_list arg_list;
 	union acpi_object arg;
 
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
-
+	list_for_each_entry(func, &slot->funcs, sibling) {
 		/* We don't want to call _EJ0 on non-existing functions. */
 		if ((func->flags & FUNC_HAS_EJ0)) {
 			/* _EJ0 method take one argument */
@@ -1275,7 +1062,6 @@ static int acpiphp_configure_bridge (acpi_handle handle)
 	acpiphp_sanitize_bus(bus);
 	acpiphp_set_hpp_values(bus);
 	pci_enable_bridges(bus);
-	acpiphp_configure_ioapics(handle);
 	return 0;
 }
 
@@ -1542,7 +1328,7 @@ int __init acpiphp_get_num_slots(void)
 	struct acpiphp_bridge *bridge;
 	int num_slots = 0;
 
-	list_for_each_entry (bridge, &bridge_list, list) {
+	list_for_each_entry(bridge, &bridge_list, list) {
 		dbg("Bus %04x:%02x has %d slot%s\n",
 				pci_domain_nr(bridge->pci_bus),
 				bridge->pci_bus->number, bridge->nr_slots,

drivers/pci/hotplug/ibmphp_hpc.c

@@ -890,7 +890,7 @@ static int poll_hpc(void *data)
 			msleep(POLL_INTERVAL_SEC * 1000);
 
 			if (kthread_should_stop())
-				break;
+				goto out_sleep;
 			
 			down (&semOperations);
 			
@@ -904,6 +904,7 @@ static int poll_hpc(void *data)
 		/* give up the hardware semaphore */
 		up (&semOperations);
 		/* sleep for a short time just for good measure */
+out_sleep:
 		msleep(100);
 	}
 	up (&sem_exit);

drivers/pci/hotplug/pci_hotplug_core.c

@@ -68,26 +68,26 @@ static DEFINE_MUTEX(pci_hp_mutex);
 static char *pci_bus_speed_strings[] = {
 	"33 MHz PCI",		/* 0x00 */
 	"66 MHz PCI",		/* 0x01 */
-	"66 MHz PCIX", 		/* 0x02 */
-	"100 MHz PCIX",		/* 0x03 */
-	"133 MHz PCIX",		/* 0x04 */
+	"66 MHz PCI-X",		/* 0x02 */
+	"100 MHz PCI-X",	/* 0x03 */
+	"133 MHz PCI-X",	/* 0x04 */
 	NULL,			/* 0x05 */
 	NULL,			/* 0x06 */
 	NULL,			/* 0x07 */
 	NULL,			/* 0x08 */
-	"66 MHz PCIX 266",	/* 0x09 */
-	"100 MHz PCIX 266",	/* 0x0a */
-	"133 MHz PCIX 266",	/* 0x0b */
+	"66 MHz PCI-X 266",	/* 0x09 */
+	"100 MHz PCI-X 266",	/* 0x0a */
+	"133 MHz PCI-X 266",	/* 0x0b */
 	NULL,			/* 0x0c */
 	NULL,			/* 0x0d */
 	NULL,			/* 0x0e */
 	NULL,			/* 0x0f */
 	NULL,			/* 0x10 */
-	"66 MHz PCIX 533",	/* 0x11 */
-	"100 MHz PCIX 533",	/* 0x12 */
-	"133 MHz PCIX 533",	/* 0x13 */
-	"2.5 GT/s PCI-E",	/* 0x14 */
-	"5.0 GT/s PCI-E",	/* 0x15 */
+	"66 MHz PCI-X 533",	/* 0x11 */
+	"100 MHz PCI-X 533",	/* 0x12 */
+	"133 MHz PCI-X 533",	/* 0x13 */
+	"2.5 GT/s PCIe",	/* 0x14 */
+	"5.0 GT/s PCIe",	/* 0x15 */
 };
 
 #ifdef CONFIG_HOTPLUG_PCI_CPCI

drivers/pci/hotplug/pciehp.h

@@ -91,7 +91,6 @@ struct controller {
 	struct slot *slot;
 	wait_queue_head_t queue;	/* sleep & wake process */
 	u32 slot_cap;
-	u8 cap_base;
 	struct timer_list poll_timer;
 	unsigned int cmd_busy:1;
 	unsigned int no_cmd_complete:1;

drivers/pci/hotplug/pciehp_acpi.c

@@ -87,7 +87,8 @@ static int __init dummy_probe(struct pcie_device *dev)
 	/* Note: pciehp_detect_mode != PCIEHP_DETECT_ACPI here */
 	if (pciehp_get_hp_hw_control_from_firmware(pdev))
 		return -ENODEV;
-	if (!(pos = pci_find_capability(pdev, PCI_CAP_ID_EXP)))
+	pos = pci_pcie_cap(pdev);
+	if (!pos)
 		return -ENODEV;
 	pci_read_config_dword(pdev, pos + PCI_EXP_SLTCAP, &slot_cap);
 	slot = kzalloc(sizeof(*slot), GFP_KERNEL);

drivers/pci/hotplug/pciehp_core.c

@@ -72,18 +72,6 @@ static int get_adapter_status	(struct hotplug_slot *slot, u8 *value);
 static int get_max_bus_speed	(struct hotplug_slot *slot, enum pci_bus_speed *value);
 static int get_cur_bus_speed	(struct hotplug_slot *slot, enum pci_bus_speed *value);
 
-static struct hotplug_slot_ops pciehp_hotplug_slot_ops = {
-	.set_attention_status =	set_attention_status,
-	.enable_slot =		enable_slot,
-	.disable_slot =		disable_slot,
-	.get_power_status =	get_power_status,
-	.get_attention_status =	get_attention_status,
-	.get_latch_status =	get_latch_status,
-	.get_adapter_status =	get_adapter_status,
-  	.get_max_bus_speed =	get_max_bus_speed,
-  	.get_cur_bus_speed =	get_cur_bus_speed,
-};
-
 /**
  * release_slot - free up the memory used by a slot
  * @hotplug_slot: slot to free
@@ -95,6 +83,7 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, hotplug_slot_name(hotplug_slot));
 
+	kfree(hotplug_slot->ops);
 	kfree(hotplug_slot->info);
 	kfree(hotplug_slot);
 }
@@ -104,6 +93,7 @@ static int init_slot(struct controller *ctrl)
 	struct slot *slot = ctrl->slot;
 	struct hotplug_slot *hotplug = NULL;
 	struct hotplug_slot_info *info = NULL;
+	struct hotplug_slot_ops *ops = NULL;
 	char name[SLOT_NAME_SIZE];
 	int retval = -ENOMEM;
 
@@ -115,11 +105,28 @@ static int init_slot(struct controller *ctrl)
 	if (!info)
 		goto out;
 
+	/* Setup hotplug slot ops */
+	ops = kzalloc(sizeof(*ops), GFP_KERNEL);
+	if (!ops)
+		goto out;
+	ops->enable_slot = enable_slot;
+	ops->disable_slot = disable_slot;
+	ops->get_power_status = get_power_status;
+	ops->get_adapter_status = get_adapter_status;
+	ops->get_max_bus_speed = get_max_bus_speed;
+	ops->get_cur_bus_speed = get_cur_bus_speed;
+	if (MRL_SENS(ctrl))
+		ops->get_latch_status = get_latch_status;
+	if (ATTN_LED(ctrl)) {
+		ops->get_attention_status = get_attention_status;
+		ops->set_attention_status = set_attention_status;
+	}
+
 	/* register this slot with the hotplug pci core */
 	hotplug->info = info;
 	hotplug->private = slot;
 	hotplug->release = &release_slot;
-	hotplug->ops = &pciehp_hotplug_slot_ops;
+	hotplug->ops = ops;
 	slot->hotplug_slot = hotplug;
 	snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));
 
@@ -128,17 +135,12 @@ static int init_slot(struct controller *ctrl)
 		 ctrl->pcie->port->subordinate->number, PSN(ctrl));
 	retval = pci_hp_register(hotplug,
 				 ctrl->pcie->port->subordinate, 0, name);
-	if (retval) {
+	if (retval)
 		ctrl_err(ctrl,
 			 "pci_hp_register failed with error %d\n", retval);
-		goto out;
-	}
-	get_power_status(hotplug, &info->power_status);
-	get_attention_status(hotplug, &info->attention_status);
-	get_latch_status(hotplug, &info->latch_status);
-	get_adapter_status(hotplug, &info->adapter_status);
 out:
 	if (retval) {
+		kfree(ops);
 		kfree(info);
 		kfree(hotplug);
 	}
@@ -160,12 +162,7 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		  __func__, slot_name(slot));
 
-	hotplug_slot->info->attention_status = status;
-
-	if (ATTN_LED(slot->ctrl))
-		pciehp_set_attention_status(slot, status);
-
-	return 0;
+	return pciehp_set_attention_status(slot, status);
 }
 
 
@@ -193,92 +190,62 @@ static int disable_slot(struct hotplug_slot *hotplug_slot)
 static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	struct slot *slot = hotplug_slot->private;
-	int retval;
 
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		  __func__, slot_name(slot));
 
-	retval = pciehp_get_power_status(slot, value);
-	if (retval < 0)
-		*value = hotplug_slot->info->power_status;
-
-	return 0;
+	return pciehp_get_power_status(slot, value);
 }
 
 static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	struct slot *slot = hotplug_slot->private;
-	int retval;
 
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		  __func__, slot_name(slot));
 
-	retval = pciehp_get_attention_status(slot, value);
-	if (retval < 0)
-		*value = hotplug_slot->info->attention_status;
-
-	return 0;
+	return pciehp_get_attention_status(slot, value);
 }
 
 static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	struct slot *slot = hotplug_slot->private;
-	int retval;
 
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
-	retval = pciehp_get_latch_status(slot, value);
-	if (retval < 0)
-		*value = hotplug_slot->info->latch_status;
-
-	return 0;
+	return pciehp_get_latch_status(slot, value);
 }
 
 static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
 {
 	struct slot *slot = hotplug_slot->private;
-	int retval;
 
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
-	retval = pciehp_get_adapter_status(slot, value);
-	if (retval < 0)
-		*value = hotplug_slot->info->adapter_status;
-
-	return 0;
+	return pciehp_get_adapter_status(slot, value);
 }
 
 static int get_max_bus_speed(struct hotplug_slot *hotplug_slot,
 				enum pci_bus_speed *value)
 {
 	struct slot *slot = hotplug_slot->private;
-	int retval;
 
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
-	retval = pciehp_get_max_link_speed(slot, value);
-	if (retval < 0)
-		*value = PCI_SPEED_UNKNOWN;
-
-	return 0;
+	return pciehp_get_max_link_speed(slot, value);
 }
 
 static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
 {
 	struct slot *slot = hotplug_slot->private;
-	int retval;
 
 	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
-	retval = pciehp_get_cur_link_speed(slot, value);
-	if (retval < 0)
-		*value = PCI_SPEED_UNKNOWN;
-
-	return 0;
+	return pciehp_get_cur_link_speed(slot, value);
 }
 
 static int pciehp_probe(struct pcie_device *dev)
@@ -286,14 +253,13 @@ static int pciehp_probe(struct pcie_device *dev)
 	int rc;
 	struct controller *ctrl;
 	struct slot *slot;
-	u8 value;
-	struct pci_dev *pdev = dev->port;
+	u8 occupied, poweron;
 
 	if (pciehp_force)
 		dev_info(&dev->device,
 			 "Bypassing BIOS check for pciehp use on %s\n",
-			 pci_name(pdev));
-	else if (pciehp_get_hp_hw_control_from_firmware(pdev))
+			 pci_name(dev->port));
+	else if (pciehp_get_hp_hw_control_from_firmware(dev->port))
 		goto err_out_none;
 
 	ctrl = pcie_init(dev);
@@ -318,23 +284,18 @@ static int pciehp_probe(struct pcie_device *dev)
 	rc = pcie_init_notification(ctrl);
 	if (rc) {
 		ctrl_err(ctrl, "Notification initialization failed\n");
-		goto err_out_release_ctlr;
+		goto err_out_free_ctrl_slot;
 	}
 
 	/* Check if slot is occupied */
 	slot = ctrl->slot;
-	pciehp_get_adapter_status(slot, &value);
-	if (value) {
-		if (pciehp_force)
-			pciehp_enable_slot(slot);
-	} else {
-		/* Power off slot if not occupied */
-		if (POWER_CTRL(ctrl)) {
-			rc = pciehp_power_off_slot(slot);
-			if (rc)
-				goto err_out_free_ctrl_slot;
-		}
-	}
+	pciehp_get_adapter_status(slot, &occupied);
+	pciehp_get_power_status(slot, &poweron);
+	if (occupied && pciehp_force)
+		pciehp_enable_slot(slot);
+	/* If empty slot's power status is on, turn power off */
+	if (!occupied && poweron && POWER_CTRL(ctrl))
+		pciehp_power_off_slot(slot);
 
 	return 0;
 

drivers/pci/hotplug/pciehp_ctrl.c

@@ -142,23 +142,9 @@ u8 pciehp_handle_power_fault(struct slot *p_slot)
 
 	/* power fault */
 	ctrl_dbg(ctrl, "Power fault interrupt received\n");
-
-	if (!pciehp_query_power_fault(p_slot)) {
-		/*
-		 * power fault Cleared
-		 */
-		ctrl_info(ctrl, "Power fault cleared on Slot(%s)\n",
-			  slot_name(p_slot));
-		event_type = INT_POWER_FAULT_CLEAR;
-	} else {
-		/*
-		 *   power fault
-		 */
-		ctrl_info(ctrl, "Power fault on Slot(%s)\n", slot_name(p_slot));
-		event_type = INT_POWER_FAULT;
-		ctrl_info(ctrl, "Power fault bit %x set\n", 0);
-	}
-
+	ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot));
+	event_type = INT_POWER_FAULT;
+	ctrl_info(ctrl, "Power fault bit %x set\n", 0);
 	queue_interrupt_event(p_slot, event_type);
 
 	return 1;
@@ -224,13 +210,12 @@ static int board_added(struct slot *p_slot)
 	retval = pciehp_check_link_status(ctrl);
 	if (retval) {
 		ctrl_err(ctrl, "Failed to check link status\n");
-		set_slot_off(ctrl, p_slot);
-		return retval;
+		goto err_exit;
 	}
 
 	/* Check for a power fault */
-	if (pciehp_query_power_fault(p_slot)) {
-		ctrl_dbg(ctrl, "Power fault detected\n");
+	if (ctrl->power_fault_detected || pciehp_query_power_fault(p_slot)) {
+		ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot));
 		retval = -EIO;
 		goto err_exit;
 	}
@@ -363,25 +348,6 @@ void pciehp_queue_pushbutton_work(struct work_struct *work)
 	mutex_unlock(&p_slot->lock);
 }
 
-static int update_slot_info(struct slot *slot)
-{
-	struct hotplug_slot_info *info;
-	int result;
-
-	info = kmalloc(sizeof(*info), GFP_KERNEL);
-	if (!info)
-		return -ENOMEM;
-
-	pciehp_get_power_status(slot, &info->power_status);
-	pciehp_get_attention_status(slot, &info->attention_status);
-	pciehp_get_latch_status(slot, &info->latch_status);
-	pciehp_get_adapter_status(slot, &info->adapter_status);
-
-	result = pci_hp_change_slot_info(slot->hotplug_slot, info);
-	kfree (info);
-	return result;
-}
-
 /*
  * Note: This function must be called with slot->lock held
  */
@@ -442,7 +408,6 @@ static void handle_button_press_event(struct slot *p_slot)
 		 * to hot-add or hot-remove is undergoing
 		 */
 		ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot));
-		update_slot_info(p_slot);
 		break;
 	default:
 		ctrl_warn(ctrl, "Not a valid state\n");
@@ -500,11 +465,9 @@ static void interrupt_event_handler(struct work_struct *work)
 		if (!HP_SUPR_RM(ctrl))
 			break;
 		ctrl_dbg(ctrl, "Surprise Removal\n");
-		update_slot_info(p_slot);
 		handle_surprise_event(p_slot);
 		break;
 	default:
-		update_slot_info(p_slot);
 		break;
 	}
 	mutex_unlock(&p_slot->lock);
@@ -547,9 +510,6 @@ int pciehp_enable_slot(struct slot *p_slot)
 	if (rc) {
 		pciehp_get_latch_status(p_slot, &getstatus);
 	}
-
-	update_slot_info(p_slot);
-
 	return rc;
 }
 
@@ -590,10 +550,7 @@ int pciehp_disable_slot(struct slot *p_slot)
 		}
 	}
 
-	ret = remove_board(p_slot);
-	update_slot_info(p_slot);
-
-	return ret;
+	return remove_board(p_slot);
 }
 
 int pciehp_sysfs_enable_slot(struct slot *p_slot)

drivers/pci/hotplug/pciehp_hpc.c

@@ -45,25 +45,25 @@ static atomic_t pciehp_num_controllers = ATOMIC_INIT(0);
 static inline int pciehp_readw(struct controller *ctrl, int reg, u16 *value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_read_config_word(dev, ctrl->cap_base + reg, value);
+	return pci_read_config_word(dev, pci_pcie_cap(dev) + reg, value);
 }
 
 static inline int pciehp_readl(struct controller *ctrl, int reg, u32 *value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_read_config_dword(dev, ctrl->cap_base + reg, value);
+	return pci_read_config_dword(dev, pci_pcie_cap(dev) + reg, value);
 }
 
 static inline int pciehp_writew(struct controller *ctrl, int reg, u16 value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_write_config_word(dev, ctrl->cap_base + reg, value);
+	return pci_write_config_word(dev, pci_pcie_cap(dev) + reg, value);
 }
 
 static inline int pciehp_writel(struct controller *ctrl, int reg, u32 value)
 {
 	struct pci_dev *dev = ctrl->pcie->port;
-	return pci_write_config_dword(dev, ctrl->cap_base + reg, value);
+	return pci_write_config_dword(dev, pci_pcie_cap(dev) + reg, value);
 }
 
 /* Power Control Command */
@@ -318,8 +318,8 @@ int pciehp_get_attention_status(struct slot *slot, u8 *status)
 		return retval;
 	}
 
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x, value read %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_ctrl);
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x, value read %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_ctrl);
 
 	atten_led_state = (slot_ctrl & PCI_EXP_SLTCTL_AIC) >> 6;
 
@@ -356,8 +356,8 @@ int pciehp_get_power_status(struct slot *slot, u8 *status)
 		ctrl_err(ctrl, "%s: Cannot read SLOTCTRL register\n", __func__);
 		return retval;
 	}
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x value read %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_ctrl);
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x value read %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_ctrl);
 
 	pwr_state = (slot_ctrl & PCI_EXP_SLTCTL_PCC) >> 10;
 
@@ -427,27 +427,24 @@ int pciehp_set_attention_status(struct slot *slot, u8 value)
 	struct controller *ctrl = slot->ctrl;
 	u16 slot_cmd;
 	u16 cmd_mask;
-	int rc;
 
 	cmd_mask = PCI_EXP_SLTCTL_AIC;
 	switch (value) {
-		case 0 :	/* turn off */
-			slot_cmd = 0x00C0;
-			break;
-		case 1:		/* turn on */
-			slot_cmd = 0x0040;
-			break;
-		case 2:		/* turn blink */
-			slot_cmd = 0x0080;
-			break;
-		default:
-			return -1;
+	case 0 :	/* turn off */
+		slot_cmd = 0x00C0;
+		break;
+	case 1:		/* turn on */
+		slot_cmd = 0x0040;
+		break;
+	case 2:		/* turn blink */
+		slot_cmd = 0x0080;
+		break;
+	default:
+		return -EINVAL;
 	}
-	rc = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
-
-	return rc;
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
+	return pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
 }
 
 void pciehp_green_led_on(struct slot *slot)
@@ -459,8 +456,8 @@ void pciehp_green_led_on(struct slot *slot)
 	slot_cmd = 0x0100;
 	cmd_mask = PCI_EXP_SLTCTL_PIC;
 	pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
 }
 
 void pciehp_green_led_off(struct slot *slot)
@@ -472,8 +469,8 @@ void pciehp_green_led_off(struct slot *slot)
 	slot_cmd = 0x0300;
 	cmd_mask = PCI_EXP_SLTCTL_PIC;
 	pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
 }
 
 void pciehp_green_led_blink(struct slot *slot)
@@ -485,8 +482,8 @@ void pciehp_green_led_blink(struct slot *slot)
 	slot_cmd = 0x0200;
 	cmd_mask = PCI_EXP_SLTCTL_PIC;
 	pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
 }
 
 int pciehp_power_on_slot(struct slot * slot)
@@ -514,97 +511,38 @@ int pciehp_power_on_slot(struct slot * slot)
 			return retval;
 		}
 	}
+	ctrl->power_fault_detected = 0;
 
 	slot_cmd = POWER_ON;
 	cmd_mask = PCI_EXP_SLTCTL_PCC;
-	if (!pciehp_poll_mode) {
-		/* Enable power fault detection turned off at power off time */
-		slot_cmd |= PCI_EXP_SLTCTL_PFDE;
-		cmd_mask |= PCI_EXP_SLTCTL_PFDE;
-	}
-
 	retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
 	if (retval) {
 		ctrl_err(ctrl, "Write %x command failed!\n", slot_cmd);
 		return retval;
 	}
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
 
-	ctrl->power_fault_detected = 0;
 	return retval;
 }
 
-static inline int pcie_mask_bad_dllp(struct controller *ctrl)
-{
-	struct pci_dev *dev = ctrl->pcie->port;
-	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->pcie->port;
-	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);
-}
-
 int pciehp_power_off_slot(struct slot * slot)
 {
 	struct controller *ctrl = slot->ctrl;
 	u16 slot_cmd;
 	u16 cmd_mask;
-	int retval = 0;
-	int changed;
-
-	/*
-	 * 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);
+	int retval;
 
 	slot_cmd = POWER_OFF;
 	cmd_mask = PCI_EXP_SLTCTL_PCC;
-	if (!pciehp_poll_mode) {
-		/* Disable power fault detection */
-		slot_cmd &= ~PCI_EXP_SLTCTL_PFDE;
-		cmd_mask |= PCI_EXP_SLTCTL_PFDE;
-	}
-
 	retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
 	if (retval) {
 		ctrl_err(ctrl, "Write command failed!\n");
-		retval = -1;
-		goto out;
+		return retval;
 	}
-	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
-		 __func__, ctrl->cap_base + PCI_EXP_SLTCTL, slot_cmd);
- out:
-	if (changed)
-		pcie_unmask_bad_dllp(ctrl);
-
-	return retval;
+	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n", __func__,
+		 pci_pcie_cap(ctrl->pcie->port) + PCI_EXP_SLTCTL, slot_cmd);
+	return 0;
 }
 
 static irqreturn_t pcie_isr(int irq, void *dev_id)
@@ -840,11 +778,19 @@ int pcie_enable_notification(struct controller *ctrl)
 {
 	u16 cmd, mask;
 
+	/*
+	 * TBD: Power fault detected software notification support.
+	 *
+	 * Power fault detected software notification is not enabled
+	 * now, because it caused power fault detected interrupt storm
+	 * on some machines. On those machines, power fault detected
+	 * bit in the slot status register was set again immediately
+	 * when it is cleared in the interrupt service routine, and
+	 * next power fault detected interrupt was notified again.
+	 */
 	cmd = PCI_EXP_SLTCTL_PDCE;
 	if (ATTN_BUTTN(ctrl))
 		cmd |= PCI_EXP_SLTCTL_ABPE;
-	if (POWER_CTRL(ctrl))
-		cmd |= PCI_EXP_SLTCTL_PFDE;
 	if (MRL_SENS(ctrl))
 		cmd |= PCI_EXP_SLTCTL_MRLSCE;
 	if (!pciehp_poll_mode)
@@ -866,7 +812,8 @@ static void pcie_disable_notification(struct controller *ctrl)
 	u16 mask;
 	mask = (PCI_EXP_SLTCTL_PDCE | PCI_EXP_SLTCTL_ABPE |
 		PCI_EXP_SLTCTL_MRLSCE | PCI_EXP_SLTCTL_PFDE |
-		PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE);
+		PCI_EXP_SLTCTL_HPIE | PCI_EXP_SLTCTL_CCIE |
+		PCI_EXP_SLTCTL_DLLSCE);
 	if (pcie_write_cmd(ctrl, 0, mask))
 		ctrl_warn(ctrl, "Cannot disable software notification\n");
 }
@@ -934,7 +881,8 @@ static inline void dbg_ctrl(struct controller *ctrl)
 		  pdev->subsystem_device);
 	ctrl_info(ctrl, "  Subsystem Vendor ID  : 0x%04x\n",
 		  pdev->subsystem_vendor);
-	ctrl_info(ctrl, "  PCIe Cap offset      : 0x%02x\n", ctrl->cap_base);
+	ctrl_info(ctrl, "  PCIe Cap offset      : 0x%02x\n",
+		  pci_pcie_cap(pdev));
 	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
 		if (!pci_resource_len(pdev, i))
 			continue;
@@ -978,8 +926,7 @@ struct controller *pcie_init(struct pcie_device *dev)
 		goto abort;
 	}
 	ctrl->pcie = dev;
-	ctrl->cap_base = pci_find_capability(pdev, PCI_CAP_ID_EXP);
-	if (!ctrl->cap_base) {
+	if (!pci_pcie_cap(pdev)) {
 		ctrl_err(ctrl, "Cannot find PCI Express capability\n");
 		goto abort_ctrl;
 	}

drivers/pci/hotplug/pcihp_slot.c

@@ -43,7 +43,7 @@ static void program_hpp_type0(struct pci_dev *dev, struct hpp_type0 *hpp)
 		 * Perhaps we *should* use default settings for PCIe, but
 		 * pciehp didn't, so we won't either.
 		 */
-		if (dev->is_pcie)
+		if (pci_is_pcie(dev))
 			return;
 		dev_info(&dev->dev, "using default PCI settings\n");
 		hpp = &pci_default_type0;
@@ -102,7 +102,7 @@ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
 		return;
 
 	/* Find PCI Express capability */
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(dev);
 	if (!pos)
 		return;
 

drivers/pci/intel-iommu.c

@@ -1611,7 +1611,7 @@ domain_context_mapping(struct dmar_domain *domain, struct pci_dev *pdev,
 			return ret;
 		parent = parent->bus->self;
 	}
-	if (tmp->is_pcie) /* this is a PCIE-to-PCI bridge */
+	if (pci_is_pcie(tmp)) /* this is a PCIE-to-PCI bridge */
 		return domain_context_mapping_one(domain,
 					pci_domain_nr(tmp->subordinate),
 					tmp->subordinate->number, 0,
@@ -1651,7 +1651,7 @@ static int domain_context_mapped(struct pci_dev *pdev)
 			return ret;
 		parent = parent->bus->self;
 	}
-	if (tmp->is_pcie)
+	if (pci_is_pcie(tmp))
 		return device_context_mapped(iommu, tmp->subordinate->number,
 					     0);
 	else
@@ -1821,7 +1821,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
 
 	dev_tmp = pci_find_upstream_pcie_bridge(pdev);
 	if (dev_tmp) {
-		if (dev_tmp->is_pcie) {
+		if (pci_is_pcie(dev_tmp)) {
 			bus = dev_tmp->subordinate->number;
 			devfn = 0;
 		} else {
@@ -2182,7 +2182,7 @@ static int iommu_should_identity_map(struct pci_dev *pdev, int startup)
 	 * the 1:1 domain, just in _case_ one of their siblings turns out
 	 * not to be able to map all of memory.
 	 */
-	if (!pdev->is_pcie) {
+	if (!pci_is_pcie(pdev)) {
 		if (!pci_is_root_bus(pdev->bus))
 			return 0;
 		if (pdev->class >> 8 == PCI_CLASS_BRIDGE_PCI)
@@ -3319,7 +3319,7 @@ static void iommu_detach_dependent_devices(struct intel_iommu *iommu,
 					 parent->devfn);
 			parent = parent->bus->self;
 		}
-		if (tmp->is_pcie) /* this is a PCIE-to-PCI bridge */
+		if (pci_is_pcie(tmp)) /* this is a PCIE-to-PCI bridge */
 			iommu_detach_dev(iommu,
 				tmp->subordinate->number, 0);
 		else /* this is a legacy PCI bridge */

drivers/pci/intr_remapping.c

@@ -520,7 +520,7 @@ int set_msi_sid(struct irte *irte, struct pci_dev *dev)
 		return -1;
 
 	/* PCIe device or Root Complex integrated PCI device */
-	if (dev->is_pcie || !dev->bus->parent) {
+	if (pci_is_pcie(dev) || !dev->bus->parent) {
 		set_irte_sid(irte, SVT_VERIFY_SID_SQ, SQ_ALL_16,
 			     (dev->bus->number << 8) | dev->devfn);
 		return 0;
@@ -528,7 +528,7 @@ int set_msi_sid(struct irte *irte, struct pci_dev *dev)
 
 	bridge = pci_find_upstream_pcie_bridge(dev);
 	if (bridge) {
-		if (bridge->is_pcie) /* this is a PCIE-to-PCI/PCIX bridge */
+		if (pci_is_pcie(bridge))/* this is a PCIE-to-PCI/PCIX bridge */
 			set_irte_sid(irte, SVT_VERIFY_BUS, SQ_ALL_16,
 				(bridge->bus->number << 8) | dev->bus->number);
 		else /* this is a legacy PCI bridge */

drivers/pci/ioapic.c

@@ -0,0 +1,127 @@
+/*
+ * IOAPIC/IOxAPIC/IOSAPIC driver
+ *
+ * Copyright (C) 2009 Fujitsu Limited.
+ * (c) Copyright 2009 Hewlett-Packard Development Company, L.P.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * This driver manages PCI I/O APICs added by hotplug after boot.  We try to
+ * claim all I/O APIC PCI devices, but those present at boot were registered
+ * when we parsed the ACPI MADT, so we'll fail when we try to re-register
+ * them.
+ */
+
+#include <linux/pci.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+
+struct ioapic {
+	acpi_handle	handle;
+	u32		gsi_base;
+};
+
+static int ioapic_probe(struct pci_dev *dev, const struct pci_device_id *ent)
+{
+	acpi_handle handle;
+	acpi_status status;
+	unsigned long long gsb;
+	struct ioapic *ioapic;
+	u64 addr;
+	int ret;
+	char *type;
+
+	handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	if (!handle)
+		return -EINVAL;
+
+	status = acpi_evaluate_integer(handle, "_GSB", NULL, &gsb);
+	if (ACPI_FAILURE(status))
+		return -EINVAL;
+
+	/*
+	 * The previous code in acpiphp evaluated _MAT if _GSB failed, but
+	 * ACPI spec 4.0 sec 6.2.2 requires _GSB for hot-pluggable I/O APICs.
+	 */
+
+	ioapic = kzalloc(sizeof(*ioapic), GFP_KERNEL);
+	if (!ioapic)
+		return -ENOMEM;
+
+	ioapic->handle = handle;
+	ioapic->gsi_base = (u32) gsb;
+
+	if (dev->class == PCI_CLASS_SYSTEM_PIC_IOAPIC)
+		type = "IOAPIC";
+	else
+		type = "IOxAPIC";
+
+	ret = pci_enable_device(dev);
+	if (ret < 0)
+		goto exit_free;
+
+	pci_set_master(dev);
+
+	if (pci_request_region(dev, 0, type))
+		goto exit_disable;
+
+	addr = pci_resource_start(dev, 0);
+	if (acpi_register_ioapic(ioapic->handle, addr, ioapic->gsi_base))
+		goto exit_release;
+
+	pci_set_drvdata(dev, ioapic);
+	dev_info(&dev->dev, "%s at %#llx, GSI %u\n", type, addr,
+		 ioapic->gsi_base);
+	return 0;
+
+exit_release:
+	pci_release_region(dev, 0);
+exit_disable:
+	pci_disable_device(dev);
+exit_free:
+	kfree(ioapic);
+	return -ENODEV;
+}
+
+static void ioapic_remove(struct pci_dev *dev)
+{
+	struct ioapic *ioapic = pci_get_drvdata(dev);
+
+	acpi_unregister_ioapic(ioapic->handle, ioapic->gsi_base);
+	pci_release_region(dev, 0);
+	pci_disable_device(dev);
+	kfree(ioapic);
+}
+
+
+static struct pci_device_id ioapic_devices[] = {
+	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+	  PCI_CLASS_SYSTEM_PIC_IOAPIC << 8, 0xffff00, },
+	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+	  PCI_CLASS_SYSTEM_PIC_IOXAPIC << 8, 0xffff00, },
+	{ }
+};
+
+static struct pci_driver ioapic_driver = {
+	.name		= "ioapic",
+	.id_table	= ioapic_devices,
+	.probe		= ioapic_probe,
+	.remove		= __devexit_p(ioapic_remove),
+};
+
+static int __init ioapic_init(void)
+{
+	return pci_register_driver(&ioapic_driver);
+}
+
+static void __exit ioapic_exit(void)
+{
+	pci_unregister_driver(&ioapic_driver);
+}
+
+module_init(ioapic_init);
+module_exit(ioapic_exit);

drivers/pci/iov.c

@@ -555,7 +555,7 @@ int pci_iov_init(struct pci_dev *dev)
 {
 	int pos;
 
-	if (!dev->is_pcie)
+	if (!pci_is_pcie(dev))
 		return -ENODEV;
 
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);

drivers/pci/pci-acpi.c

@@ -116,7 +116,7 @@ static void acpi_pci_propagate_wakeup_enable(struct pci_bus *bus, bool enable)
 		int ret;
 
 		ret = acpi_pm_device_sleep_wake(&bridge->dev, enable);
-		if (!ret || bridge->is_pcie)
+		if (!ret || pci_is_pcie(bridge))
 			return;
 		bus = bus->parent;
 	}
@@ -131,7 +131,7 @@ static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
 	if (acpi_pci_can_wakeup(dev))
 		return acpi_pm_device_sleep_wake(&dev->dev, enable);
 
-	if (!dev->is_pcie)
+	if (!pci_is_pcie(dev))
 		acpi_pci_propagate_wakeup_enable(dev->bus, enable);
 
 	return 0;

drivers/pci/pci-sysfs.c

@@ -74,7 +74,11 @@ static ssize_t local_cpus_show(struct device *dev,
 	const struct cpumask *mask;
 	int len;
 
+#ifdef CONFIG_NUMA
+	mask = cpumask_of_node(dev_to_node(dev));
+#else
 	mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
+#endif
 	len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
 	buf[len++] = '\n';
 	buf[len] = '\0';
@@ -88,7 +92,11 @@ static ssize_t local_cpulist_show(struct device *dev,
 	const struct cpumask *mask;
 	int len;
 
+#ifdef CONFIG_NUMA
+	mask = cpumask_of_node(dev_to_node(dev));
+#else
 	mask = cpumask_of_pcibus(to_pci_dev(dev)->bus);
+#endif
 	len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
 	buf[len++] = '\n';
 	buf[len] = '\0';
@@ -175,6 +183,21 @@ numa_node_show(struct device *dev, struct device_attribute *attr, char *buf)
 }
 #endif
 
+static ssize_t
+dma_mask_bits_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	return sprintf (buf, "%d\n", fls64(pdev->dma_mask));
+}
+
+static ssize_t
+consistent_dma_mask_bits_show(struct device *dev, struct device_attribute *attr,
+				 char *buf)
+{
+	return sprintf (buf, "%d\n", fls64(dev->coherent_dma_mask));
+}
+
 static ssize_t
 msi_bus_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
@@ -306,6 +329,8 @@ struct device_attribute pci_dev_attrs[] = {
 #ifdef CONFIG_NUMA
 	__ATTR_RO(numa_node),
 #endif
+	__ATTR_RO(dma_mask_bits),
+	__ATTR_RO(consistent_dma_mask_bits),
 	__ATTR(enable, 0600, is_enabled_show, is_enabled_store),
 	__ATTR(broken_parity_status,(S_IRUGO|S_IWUSR),
 		broken_parity_status_show,broken_parity_status_store),

drivers/pci/pci.c

@@ -47,6 +47,15 @@ unsigned long pci_cardbus_mem_size = DEFAULT_CARDBUS_MEM_SIZE;
 unsigned long pci_hotplug_io_size  = DEFAULT_HOTPLUG_IO_SIZE;
 unsigned long pci_hotplug_mem_size = DEFAULT_HOTPLUG_MEM_SIZE;
 
+/*
+ * The default CLS is used if arch didn't set CLS explicitly and not
+ * all pci devices agree on the same value.  Arch can override either
+ * the dfl or actual value as it sees fit.  Don't forget this is
+ * measured in 32-bit words, not bytes.
+ */
+u8 pci_dfl_cache_line_size __devinitdata = L1_CACHE_BYTES >> 2;
+u8 pci_cache_line_size;
+
 /**
  * pci_bus_max_busnr - returns maximum PCI bus number of given bus' children
  * @bus: pointer to PCI bus structure to search
@@ -373,8 +382,12 @@ pci_find_parent_resource(const struct pci_dev *dev, struct resource *res)
 			continue;	/* Wrong type */
 		if (!((res->flags ^ r->flags) & IORESOURCE_PREFETCH))
 			return r;	/* Exact match */
-		if ((res->flags & IORESOURCE_PREFETCH) && !(r->flags & IORESOURCE_PREFETCH))
-			best = r;	/* Approximating prefetchable by non-prefetchable */
+		/* We can't insert a non-prefetch resource inside a prefetchable parent .. */
+		if (r->flags & IORESOURCE_PREFETCH)
+			continue;
+		/* .. but we can put a prefetchable resource inside a non-prefetchable one */
+		if (!best)
+			best = r;
 	}
 	return best;
 }
@@ -728,8 +741,8 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	u16 *cap;
 	u16 flags;
 
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
-	if (pos <= 0)
+	pos = pci_pcie_cap(dev);
+	if (!pos)
 		return 0;
 
 	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
@@ -837,7 +850,7 @@ pci_save_state(struct pci_dev *dev)
 	int i;
 	/* XXX: 100% dword access ok here? */
 	for (i = 0; i < 16; i++)
-		pci_read_config_dword(dev, i * 4,&dev->saved_config_space[i]);
+		pci_read_config_dword(dev, i * 4, &dev->saved_config_space[i]);
 	dev->state_saved = true;
 	if ((i = pci_save_pcie_state(dev)) != 0)
 		return i;
@@ -1202,7 +1215,7 @@ void pci_pme_active(struct pci_dev *dev, bool enable)
 
 	pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr);
 
-	dev_printk(KERN_INFO, &dev->dev, "PME# %s\n",
+	dev_printk(KERN_DEBUG, &dev->dev, "PME# %s\n",
 			enable ? "enabled" : "disabled");
 }
 
@@ -1413,7 +1426,8 @@ void pci_pm_init(struct pci_dev *dev)
 
 	pmc &= PCI_PM_CAP_PME_MASK;
 	if (pmc) {
-		dev_info(&dev->dev, "PME# supported from%s%s%s%s%s\n",
+		dev_printk(KERN_DEBUG, &dev->dev,
+			 "PME# supported from%s%s%s%s%s\n",
 			 (pmc & PCI_PM_CAP_PME_D0) ? " D0" : "",
 			 (pmc & PCI_PM_CAP_PME_D1) ? " D1" : "",
 			 (pmc & PCI_PM_CAP_PME_D2) ? " D2" : "",
@@ -1510,7 +1524,7 @@ void pci_enable_ari(struct pci_dev *dev)
 	u16 ctrl;
 	struct pci_dev *bridge;
 
-	if (!dev->is_pcie || dev->devfn)
+	if (!pci_is_pcie(dev) || dev->devfn)
 		return;
 
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ARI);
@@ -1518,10 +1532,10 @@ void pci_enable_ari(struct pci_dev *dev)
 		return;
 
 	bridge = dev->bus->self;
-	if (!bridge || !bridge->is_pcie)
+	if (!bridge || !pci_is_pcie(bridge))
 		return;
 
-	pos = pci_find_capability(bridge, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(bridge);
 	if (!pos)
 		return;
 
@@ -1536,6 +1550,54 @@ void pci_enable_ari(struct pci_dev *dev)
 	bridge->ari_enabled = 1;
 }
 
+static int pci_acs_enable;
+
+/**
+ * pci_request_acs - ask for ACS to be enabled if supported
+ */
+void pci_request_acs(void)
+{
+	pci_acs_enable = 1;
+}
+
+/**
+ * pci_enable_acs - enable ACS if hardware support it
+ * @dev: the PCI device
+ */
+void pci_enable_acs(struct pci_dev *dev)
+{
+	int pos;
+	u16 cap;
+	u16 ctrl;
+
+	if (!pci_acs_enable)
+		return;
+
+	if (!pci_is_pcie(dev))
+		return;
+
+	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+	if (!pos)
+		return;
+
+	pci_read_config_word(dev, pos + PCI_ACS_CAP, &cap);
+	pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
+
+	/* Source Validation */
+	ctrl |= (cap & PCI_ACS_SV);
+
+	/* P2P Request Redirect */
+	ctrl |= (cap & PCI_ACS_RR);
+
+	/* P2P Completion Redirect */
+	ctrl |= (cap & PCI_ACS_CR);
+
+	/* Upstream Forwarding */
+	ctrl |= (cap & PCI_ACS_UF);
+
+	pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
+}
+
 /**
  * pci_swizzle_interrupt_pin - swizzle INTx for device behind bridge
  * @dev: the PCI device
@@ -1669,9 +1731,7 @@ static int __pci_request_region(struct pci_dev *pdev, int bar, const char *res_n
 	return 0;
 
 err_out:
-	dev_warn(&pdev->dev, "BAR %d: can't reserve %s region %pR\n",
-		 bar,
-		 pci_resource_flags(pdev, bar) & IORESOURCE_IO ? "I/O" : "mem",
+	dev_warn(&pdev->dev, "BAR %d: can't reserve %pR\n", bar,
 		 &pdev->resource[bar]);
 	return -EBUSY;
 }
@@ -1866,31 +1926,6 @@ void pci_clear_master(struct pci_dev *dev)
 	__pci_set_master(dev, false);
 }
 
-#ifdef PCI_DISABLE_MWI
-int pci_set_mwi(struct pci_dev *dev)
-{
-	return 0;
-}
-
-int pci_try_set_mwi(struct pci_dev *dev)
-{
-	return 0;
-}
-
-void pci_clear_mwi(struct pci_dev *dev)
-{
-}
-
-#else
-
-#ifndef PCI_CACHE_LINE_BYTES
-#define PCI_CACHE_LINE_BYTES L1_CACHE_BYTES
-#endif
-
-/* This can be overridden by arch code. */
-/* Don't forget this is measured in 32-bit words, not bytes */
-u8 pci_cache_line_size = PCI_CACHE_LINE_BYTES / 4;
-
 /**
  * pci_set_cacheline_size - ensure the CACHE_LINE_SIZE register is programmed
  * @dev: the PCI device for which MWI is to be enabled
@@ -1901,13 +1936,12 @@ u8 pci_cache_line_size = PCI_CACHE_LINE_BYTES / 4;
  *
  * RETURNS: An appropriate -ERRNO error value on error, or zero for success.
  */
-static int
-pci_set_cacheline_size(struct pci_dev *dev)
+int pci_set_cacheline_size(struct pci_dev *dev)
 {
 	u8 cacheline_size;
 
 	if (!pci_cache_line_size)
-		return -EINVAL;		/* The system doesn't support MWI. */
+		return -EINVAL;
 
 	/* Validate current setting: the PCI_CACHE_LINE_SIZE must be
 	   equal to or multiple of the right value. */
@@ -1928,6 +1962,24 @@ pci_set_cacheline_size(struct pci_dev *dev)
 
 	return -EINVAL;
 }
+EXPORT_SYMBOL_GPL(pci_set_cacheline_size);
+
+#ifdef PCI_DISABLE_MWI
+int pci_set_mwi(struct pci_dev *dev)
+{
+	return 0;
+}
+
+int pci_try_set_mwi(struct pci_dev *dev)
+{
+	return 0;
+}
+
+void pci_clear_mwi(struct pci_dev *dev)
+{
+}
+
+#else
 
 /**
  * pci_set_mwi - enables memory-write-invalidate PCI transaction
@@ -2062,6 +2114,7 @@ pci_set_dma_mask(struct pci_dev *dev, u64 mask)
 		return -EIO;
 
 	dev->dma_mask = mask;
+	dev_dbg(&dev->dev, "using %dbit DMA mask\n", fls64(mask));
 
 	return 0;
 }
@@ -2073,6 +2126,7 @@ pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
 		return -EIO;
 
 	dev->dev.coherent_dma_mask = mask;
+	dev_dbg(&dev->dev, "using %dbit consistent DMA mask\n", fls64(mask));
 
 	return 0;
 }
@@ -2099,9 +2153,9 @@ static int pcie_flr(struct pci_dev *dev, int probe)
 	int i;
 	int pos;
 	u32 cap;
-	u16 status;
+	u16 status, control;
 
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(dev);
 	if (!pos)
 		return -ENOTTY;
 
@@ -2126,8 +2180,10 @@ static int pcie_flr(struct pci_dev *dev, int probe)
 			"proceeding with reset anyway\n");
 
 clear:
-	pci_write_config_word(dev, pos + PCI_EXP_DEVCTL,
-				PCI_EXP_DEVCTL_BCR_FLR);
+	pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &control);
+	control |= PCI_EXP_DEVCTL_BCR_FLR;
+	pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, control);
+
 	msleep(100);
 
 	return 0;
@@ -2450,7 +2506,7 @@ int pcie_get_readrq(struct pci_dev *dev)
 	int ret, cap;
 	u16 ctl;
 
-	cap = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	cap = pci_pcie_cap(dev);
 	if (!cap)
 		return -EINVAL;
 
@@ -2480,7 +2536,7 @@ int pcie_set_readrq(struct pci_dev *dev, int rq)
 
 	v = (ffs(rq) - 8) << 12;
 
-	cap = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	cap = pci_pcie_cap(dev);
 	if (!cap)
 		goto out;
 
@@ -2540,7 +2596,7 @@ int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type)
 			return reg;
 	}
 
-	dev_err(&dev->dev, "BAR: invalid resource #%d\n", resno);
+	dev_err(&dev->dev, "BAR %d: invalid resource\n", resno);
 	return 0;
 }
 
@@ -2590,7 +2646,7 @@ int pci_set_vga_state(struct pci_dev *dev, bool decode,
 
 #define RESOURCE_ALIGNMENT_PARAM_SIZE COMMAND_LINE_SIZE
 static char resource_alignment_param[RESOURCE_ALIGNMENT_PARAM_SIZE] = {0};
-spinlock_t resource_alignment_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(resource_alignment_lock);
 
 /**
  * pci_specified_resource_alignment - get resource alignment specified by user.

drivers/pci/pci.h

@@ -311,4 +311,6 @@ static inline int pci_resource_alignment(struct pci_dev *dev,
 	return resource_alignment(res);
 }
 
+extern void pci_enable_acs(struct pci_dev *dev);
+
 #endif /* DRIVERS_PCI_H */

drivers/pci/pcie/aer/aer_inject.c

@@ -23,6 +23,7 @@
 #include <linux/pci.h>
 #include <linux/fs.h>
 #include <linux/uaccess.h>
+#include <linux/stddef.h>
 #include "aerdrv.h"
 
 struct aer_error_inj {
@@ -35,10 +36,12 @@ struct aer_error_inj {
 	u32 header_log1;
 	u32 header_log2;
 	u32 header_log3;
+	u16 domain;
 };
 
 struct aer_error {
 	struct list_head list;
+	u16 domain;
 	unsigned int bus;
 	unsigned int devfn;
 	int pos_cap_err;
@@ -66,22 +69,27 @@ static LIST_HEAD(pci_bus_ops_list);
 /* Protect einjected and pci_bus_ops_list */
 static DEFINE_SPINLOCK(inject_lock);
 
-static void aer_error_init(struct aer_error *err, unsigned int bus,
-			   unsigned int devfn, int pos_cap_err)
+static void aer_error_init(struct aer_error *err, u16 domain,
+			   unsigned int bus, unsigned int devfn,
+			   int pos_cap_err)
 {
 	INIT_LIST_HEAD(&err->list);
+	err->domain = domain;
 	err->bus = bus;
 	err->devfn = devfn;
 	err->pos_cap_err = pos_cap_err;
 }
 
 /* inject_lock must be held before calling */
-static struct aer_error *__find_aer_error(unsigned int bus, unsigned int devfn)
+static struct aer_error *__find_aer_error(u16 domain, unsigned int bus,
+					  unsigned int devfn)
 {
 	struct aer_error *err;
 
 	list_for_each_entry(err, &einjected, list) {
-		if (bus == err->bus && devfn == err->devfn)
+		if (domain == err->domain &&
+		    bus == err->bus &&
+		    devfn == err->devfn)
 			return err;
 	}
 	return NULL;
@@ -90,7 +98,10 @@ static struct aer_error *__find_aer_error(unsigned int bus, unsigned int devfn)
 /* inject_lock must be held before calling */
 static struct aer_error *__find_aer_error_by_dev(struct pci_dev *dev)
 {
-	return __find_aer_error(dev->bus->number, dev->devfn);
+	int domain = pci_domain_nr(dev->bus);
+	if (domain < 0)
+		return NULL;
+	return __find_aer_error((u16)domain, dev->bus->number, dev->devfn);
 }
 
 /* inject_lock must be held before calling */
@@ -172,11 +183,15 @@ static int pci_read_aer(struct pci_bus *bus, unsigned int devfn, int where,
 	struct aer_error *err;
 	unsigned long flags;
 	struct pci_ops *ops;
+	int domain;
 
 	spin_lock_irqsave(&inject_lock, flags);
 	if (size != sizeof(u32))
 		goto out;
-	err = __find_aer_error(bus->number, devfn);
+	domain = pci_domain_nr(bus);
+	if (domain < 0)
+		goto out;
+	err = __find_aer_error((u16)domain, bus->number, devfn);
 	if (!err)
 		goto out;
 
@@ -200,11 +215,15 @@ int pci_write_aer(struct pci_bus *bus, unsigned int devfn, int where, int size,
 	unsigned long flags;
 	int rw1cs;
 	struct pci_ops *ops;
+	int domain;
 
 	spin_lock_irqsave(&inject_lock, flags);
 	if (size != sizeof(u32))
 		goto out;
-	err = __find_aer_error(bus->number, devfn);
+	domain = pci_domain_nr(bus);
+	if (domain < 0)
+		goto out;
+	err = __find_aer_error((u16)domain, bus->number, devfn);
 	if (!err)
 		goto out;
 
@@ -262,7 +281,7 @@ out:
 static struct pci_dev *pcie_find_root_port(struct pci_dev *dev)
 {
 	while (1) {
-		if (!dev->is_pcie)
+		if (!pci_is_pcie(dev))
 			break;
 		if (dev->pcie_type == PCI_EXP_TYPE_ROOT_PORT)
 			return dev;
@@ -305,25 +324,25 @@ static int aer_inject(struct aer_error_inj *einj)
 	u32 sever;
 	int ret = 0;
 
-	dev = pci_get_bus_and_slot(einj->bus, devfn);
+	dev = pci_get_domain_bus_and_slot((int)einj->domain, einj->bus, devfn);
 	if (!dev)
-		return -EINVAL;
+		return -ENODEV;
 	rpdev = pcie_find_root_port(dev);
 	if (!rpdev) {
-		ret = -EINVAL;
+		ret = -ENOTTY;
 		goto out_put;
 	}
 
 	pos_cap_err = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
 	if (!pos_cap_err) {
-		ret = -EIO;
+		ret = -ENOTTY;
 		goto out_put;
 	}
 	pci_read_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_SEVER, &sever);
 
 	rp_pos_cap_err = pci_find_ext_capability(rpdev, PCI_EXT_CAP_ID_ERR);
 	if (!rp_pos_cap_err) {
-		ret = -EIO;
+		ret = -ENOTTY;
 		goto out_put;
 	}
 
@@ -344,7 +363,8 @@ static int aer_inject(struct aer_error_inj *einj)
 	if (!err) {
 		err = err_alloc;
 		err_alloc = NULL;
-		aer_error_init(err, einj->bus, devfn, pos_cap_err);
+		aer_error_init(err, einj->domain, einj->bus, devfn,
+			       pos_cap_err);
 		list_add(&err->list, &einjected);
 	}
 	err->uncor_status |= einj->uncor_status;
@@ -358,7 +378,8 @@ static int aer_inject(struct aer_error_inj *einj)
 	if (!rperr) {
 		rperr = rperr_alloc;
 		rperr_alloc = NULL;
-		aer_error_init(rperr, rpdev->bus->number, rpdev->devfn,
+		aer_error_init(rperr, pci_domain_nr(rpdev->bus),
+			       rpdev->bus->number, rpdev->devfn,
 			       rp_pos_cap_err);
 		list_add(&rperr->list, &einjected);
 	}
@@ -411,10 +432,11 @@ static ssize_t aer_inject_write(struct file *filp, const char __user *ubuf,
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
-
-	if (usize != sizeof(struct aer_error_inj))
+	if (usize < offsetof(struct aer_error_inj, domain) ||
+	    usize > sizeof(einj))
 		return -EINVAL;
 
+	memset(&einj, 0, sizeof(einj));
 	if (copy_from_user(&einj, ubuf, usize))
 		return -EFAULT;
 
@@ -452,7 +474,7 @@ static void __exit aer_inject_exit(void)
 	}
 
 	spin_lock_irqsave(&inject_lock, flags);
-	list_for_each_entry_safe(err, err_next, &pci_bus_ops_list, list) {
+	list_for_each_entry_safe(err, err_next, &einjected, list) {
 		list_del(&err->list);
 		kfree(err);
 	}

drivers/pci/pcie/aer/aerdrv.c

@@ -53,7 +53,7 @@ static struct pci_error_handlers aer_error_handlers = {
 
 static struct pcie_port_service_driver aerdriver = {
 	.name		= "aer",
-	.port_type	= PCIE_RC_PORT,
+	.port_type	= PCI_EXP_TYPE_ROOT_PORT,
 	.service	= PCIE_PORT_SERVICE_AER,
 
 	.probe		= aer_probe,
@@ -295,7 +295,7 @@ static void aer_error_resume(struct pci_dev *dev)
 	u16 reg16;
 
 	/* Clean up Root device status */
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(dev);
 	pci_read_config_word(dev, pos + PCI_EXP_DEVSTA, &reg16);
 	pci_write_config_word(dev, pos + PCI_EXP_DEVSTA, reg16);
 

drivers/pci/pcie/aer/aerdrv_core.c

@@ -35,11 +35,14 @@ int pci_enable_pcie_error_reporting(struct pci_dev *dev)
 	u16 reg16 = 0;
 	int pos;
 
+	if (dev->aer_firmware_first)
+		return -EIO;
+
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
 	if (!pos)
 		return -EIO;
 
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(dev);
 	if (!pos)
 		return -EIO;
 
@@ -60,7 +63,10 @@ int pci_disable_pcie_error_reporting(struct pci_dev *dev)
 	u16 reg16 = 0;
 	int pos;
 
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	if (dev->aer_firmware_first)
+		return -EIO;
+
+	pos = pci_pcie_cap(dev);
 	if (!pos)
 		return -EIO;
 
@@ -78,48 +84,27 @@ EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
 int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
 {
 	int pos;
-	u32 status, mask;
+	u32 status;
 
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
 	if (!pos)
 		return -EIO;
 
 	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
-	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
-	if (dev->error_state == pci_channel_io_normal)
-		status &= ~mask; /* Clear corresponding nonfatal bits */
-	else
-		status &= mask; /* Clear corresponding fatal bits */
-	pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
+	if (status)
+		pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
 
 	return 0;
 }
 EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
 
-#if 0
-int pci_cleanup_aer_correct_error_status(struct pci_dev *dev)
-{
-	int pos;
-	u32 status;
-
-	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
-	if (!pos)
-		return -EIO;
-
-	pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
-	pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS, status);
-
-	return 0;
-}
-#endif  /*  0  */
-
 static int set_device_error_reporting(struct pci_dev *dev, void *data)
 {
 	bool enable = *((bool *)data);
 
-	if (dev->pcie_type == PCIE_RC_PORT ||
-	    dev->pcie_type == PCIE_SW_UPSTREAM_PORT ||
-	    dev->pcie_type == PCIE_SW_DOWNSTREAM_PORT) {
+	if ((dev->pcie_type == PCI_EXP_TYPE_ROOT_PORT) ||
+	    (dev->pcie_type == PCI_EXP_TYPE_UPSTREAM) ||
+	    (dev->pcie_type == PCI_EXP_TYPE_DOWNSTREAM)) {
 		if (enable)
 			pci_enable_pcie_error_reporting(dev);
 		else
@@ -218,7 +203,7 @@ static int find_device_iter(struct pci_dev *dev, void *data)
 	 */
 	if (atomic_read(&dev->enable_cnt) == 0)
 		return 0;
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(dev);
 	if (!pos)
 		return 0;
 	/* Check if AER is enabled */
@@ -431,10 +416,9 @@ static int find_aer_service_iter(struct device *device, void *data)
 	result = (struct find_aer_service_data *) data;
 
 	if (device->bus == &pcie_port_bus_type) {
-		struct pcie_port_data *port_data;
+		struct pcie_device *pcie = to_pcie_device(device);
 
-		port_data = pci_get_drvdata(to_pcie_device(device)->port);
-		if (port_data->port_type == PCIE_SW_DOWNSTREAM_PORT)
+		if (pcie->port->pcie_type == PCI_EXP_TYPE_DOWNSTREAM)
 			result->is_downstream = 1;
 
 		driver = device->driver;
@@ -612,7 +596,7 @@ void aer_enable_rootport(struct aer_rpc *rpc)
 	u16 reg16;
 	u32 reg32;
 
-	pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(pdev);
 	/* Clear PCIE Capability's Device Status */
 	pci_read_config_word(pdev, pos+PCI_EXP_DEVSTA, &reg16);
 	pci_write_config_word(pdev, pos+PCI_EXP_DEVSTA, reg16);
@@ -874,8 +858,22 @@ void aer_delete_rootport(struct aer_rpc *rpc)
  */
 int aer_init(struct pcie_device *dev)
 {
-	if (aer_osc_setup(dev) && !forceload)
-		return -ENXIO;
+	if (dev->port->aer_firmware_first) {
+		dev_printk(KERN_DEBUG, &dev->device,
+			   "PCIe errors handled by platform firmware.\n");
+		goto out;
+	}
+
+	if (aer_osc_setup(dev))
+		goto out;
 
 	return 0;
+out:
+	if (forceload) {
+		dev_printk(KERN_DEBUG, &dev->device,
+			   "aerdrv forceload requested.\n");
+		dev->port->aer_firmware_first = 0;
+		return 0;
+	}
+	return -ENXIO;
 }

drivers/pci/pcie/aer/ecrc.c

@@ -51,7 +51,7 @@ static int enable_ecrc_checking(struct pci_dev *dev)
 	int pos;
 	u32 reg32;
 
-	if (!dev->is_pcie)
+	if (!pci_is_pcie(dev))
 		return -ENODEV;
 
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
@@ -79,7 +79,7 @@ static int disable_ecrc_checking(struct pci_dev *dev)
 	int pos;
 	u32 reg32;
 
-	if (!dev->is_pcie)
+	if (!pci_is_pcie(dev))
 		return -ENODEV;
 
 	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);

drivers/pci/pcie/aspm.c

@@ -122,7 +122,7 @@ static void pcie_set_clkpm_nocheck(struct pcie_link_state *link, int enable)
 	struct pci_bus *linkbus = link->pdev->subordinate;
 
 	list_for_each_entry(child, &linkbus->devices, bus_list) {
-		pos = pci_find_capability(child, PCI_CAP_ID_EXP);
+		pos = pci_pcie_cap(child);
 		if (!pos)
 			return;
 		pci_read_config_word(child, pos + PCI_EXP_LNKCTL, &reg16);
@@ -156,7 +156,7 @@ static void pcie_clkpm_cap_init(struct pcie_link_state *link, int blacklist)
 
 	/* All functions should have the same cap and state, take the worst */
 	list_for_each_entry(child, &linkbus->devices, bus_list) {
-		pos = pci_find_capability(child, PCI_CAP_ID_EXP);
+		pos = pci_pcie_cap(child);
 		if (!pos)
 			return;
 		pci_read_config_dword(child, pos + PCI_EXP_LNKCAP, &reg32);
@@ -191,23 +191,23 @@ static void pcie_aspm_configure_common_clock(struct pcie_link_state *link)
 	 * Configuration, so just check one function
 	 */
 	child = list_entry(linkbus->devices.next, struct pci_dev, bus_list);
-	BUG_ON(!child->is_pcie);
+	BUG_ON(!pci_is_pcie(child));
 
 	/* Check downstream component if bit Slot Clock Configuration is 1 */
-	cpos = pci_find_capability(child, PCI_CAP_ID_EXP);
+	cpos = pci_pcie_cap(child);
 	pci_read_config_word(child, cpos + PCI_EXP_LNKSTA, &reg16);
 	if (!(reg16 & PCI_EXP_LNKSTA_SLC))
 		same_clock = 0;
 
 	/* Check upstream component if bit Slot Clock Configuration is 1 */
-	ppos = pci_find_capability(parent, PCI_CAP_ID_EXP);
+	ppos = pci_pcie_cap(parent);
 	pci_read_config_word(parent, ppos + PCI_EXP_LNKSTA, &reg16);
 	if (!(reg16 & PCI_EXP_LNKSTA_SLC))
 		same_clock = 0;
 
 	/* Configure downstream component, all functions */
 	list_for_each_entry(child, &linkbus->devices, bus_list) {
-		cpos = pci_find_capability(child, PCI_CAP_ID_EXP);
+		cpos = pci_pcie_cap(child);
 		pci_read_config_word(child, cpos + PCI_EXP_LNKCTL, &reg16);
 		child_reg[PCI_FUNC(child->devfn)] = reg16;
 		if (same_clock)
@@ -247,7 +247,7 @@ static void pcie_aspm_configure_common_clock(struct pcie_link_state *link)
 	dev_printk(KERN_ERR, &parent->dev,
 		   "ASPM: Could not configure common clock\n");
 	list_for_each_entry(child, &linkbus->devices, bus_list) {
-		cpos = pci_find_capability(child, PCI_CAP_ID_EXP);
+		cpos = pci_pcie_cap(child);
 		pci_write_config_word(child, cpos + PCI_EXP_LNKCTL,
 				      child_reg[PCI_FUNC(child->devfn)]);
 	}
@@ -300,7 +300,7 @@ static void pcie_get_aspm_reg(struct pci_dev *pdev,
 	u16 reg16;
 	u32 reg32;
 
-	pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(pdev);
 	pci_read_config_dword(pdev, pos + PCI_EXP_LNKCAP, &reg32);
 	info->support = (reg32 & PCI_EXP_LNKCAP_ASPMS) >> 10;
 	info->latency_encoding_l0s = (reg32 & PCI_EXP_LNKCAP_L0SEL) >> 12;
@@ -420,7 +420,7 @@ static void pcie_aspm_cap_init(struct pcie_link_state *link, int blacklist)
 		    child->pcie_type != PCI_EXP_TYPE_LEG_END)
 			continue;
 
-		pos = pci_find_capability(child, PCI_CAP_ID_EXP);
+		pos = pci_pcie_cap(child);
 		pci_read_config_dword(child, pos + PCI_EXP_DEVCAP, &reg32);
 		/* Calculate endpoint L0s acceptable latency */
 		encoding = (reg32 & PCI_EXP_DEVCAP_L0S) >> 6;
@@ -436,7 +436,7 @@ static void pcie_aspm_cap_init(struct pcie_link_state *link, int blacklist)
 static void pcie_config_aspm_dev(struct pci_dev *pdev, u32 val)
 {
 	u16 reg16;
-	int pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	int pos = pci_pcie_cap(pdev);
 
 	pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
 	reg16 &= ~0x3;
@@ -503,7 +503,7 @@ static int pcie_aspm_sanity_check(struct pci_dev *pdev)
 	 * very strange. Disable ASPM for the whole slot
 	 */
 	list_for_each_entry(child, &pdev->subordinate->devices, bus_list) {
-		pos = pci_find_capability(child, PCI_CAP_ID_EXP);
+		pos = pci_pcie_cap(child);
 		if (!pos)
 			return -EINVAL;
 		/*
@@ -563,7 +563,7 @@ void pcie_aspm_init_link_state(struct pci_dev *pdev)
 	struct pcie_link_state *link;
 	int blacklist = !!pcie_aspm_sanity_check(pdev);
 
-	if (aspm_disabled || !pdev->is_pcie || pdev->link_state)
+	if (aspm_disabled || !pci_is_pcie(pdev) || pdev->link_state)
 		return;
 	if (pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
 	    pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM)
@@ -629,7 +629,8 @@ void pcie_aspm_exit_link_state(struct pci_dev *pdev)
 	struct pci_dev *parent = pdev->bus->self;
 	struct pcie_link_state *link, *root, *parent_link;
 
-	if (aspm_disabled || !pdev->is_pcie || !parent || !parent->link_state)
+	if (aspm_disabled || !pci_is_pcie(pdev) ||
+	    !parent || !parent->link_state)
 		return;
 	if ((parent->pcie_type != PCI_EXP_TYPE_ROOT_PORT) &&
 	    (parent->pcie_type != PCI_EXP_TYPE_DOWNSTREAM))
@@ -670,7 +671,7 @@ void pcie_aspm_pm_state_change(struct pci_dev *pdev)
 {
 	struct pcie_link_state *link = pdev->link_state;
 
-	if (aspm_disabled || !pdev->is_pcie || !link)
+	if (aspm_disabled || !pci_is_pcie(pdev) || !link)
 		return;
 	if ((pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT) &&
 	    (pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM))
@@ -696,7 +697,7 @@ void pci_disable_link_state(struct pci_dev *pdev, int state)
 	struct pci_dev *parent = pdev->bus->self;
 	struct pcie_link_state *link;
 
-	if (aspm_disabled || !pdev->is_pcie)
+	if (aspm_disabled || !pci_is_pcie(pdev))
 		return;
 	if (pdev->pcie_type == PCI_EXP_TYPE_ROOT_PORT ||
 	    pdev->pcie_type == PCI_EXP_TYPE_DOWNSTREAM)
@@ -841,8 +842,9 @@ 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) || !link_state)
+	if (!pci_is_pcie(pdev) ||
+	    (pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
+	     pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM) || !link_state)
 		return;
 
 	if (link_state->aspm_support)
@@ -857,8 +859,9 @@ 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) || !link_state)
+	if (!pci_is_pcie(pdev) ||
+	    (pdev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
+	     pdev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM) || !link_state)
 		return;
 
 	if (link_state->aspm_support)

drivers/pci/pcie/portdrv.h

@@ -11,31 +11,16 @@
 
 #include <linux/compiler.h>
 
-#if !defined(PCI_CAP_ID_PME)
-#define PCI_CAP_ID_PME			1
-#endif
-
-#if !defined(PCI_CAP_ID_EXP)
-#define PCI_CAP_ID_EXP			0x10
-#endif
-
-#define PORT_TYPE_MASK			0xf
-#define PORT_TO_SLOT_MASK		0x100
-#define SLOT_HP_CAPABLE_MASK		0x40
-#define PCIE_CAPABILITIES_REG		0x2
-#define PCIE_SLOT_CAPABILITIES_REG	0x14
-#define PCIE_PORT_DEVICE_MAXSERVICES	4
-#define PCIE_PORT_MSI_VECTOR_MASK	0x1f
+#define PCIE_PORT_DEVICE_MAXSERVICES   4
 /*
- * According to the PCI Express Base Specification 2.0, the indices of the MSI-X
- * table entires used by port services must not exceed 31
+ * According to the PCI Express Base Specification 2.0, the indices of
+ * the MSI-X table entires used by port services must not exceed 31
  */
 #define PCIE_PORT_MAX_MSIX_ENTRIES	32
 
 #define get_descriptor_id(type, service) (((type - 4) << 4) | service)
 
 extern struct bus_type pcie_port_bus_type;
-extern int pcie_port_device_probe(struct pci_dev *dev);
 extern int pcie_port_device_register(struct pci_dev *dev);
 #ifdef CONFIG_PM
 extern int pcie_port_device_suspend(struct device *dev);

drivers/pci/pcie/portdrv_bus.c

@@ -26,7 +26,6 @@ EXPORT_SYMBOL_GPL(pcie_port_bus_type);
 static int pcie_port_bus_match(struct device *dev, struct device_driver *drv)
 {
 	struct pcie_device *pciedev;
-	struct pcie_port_data *port_data;
 	struct pcie_port_service_driver *driver;
 
 	if (drv->bus != &pcie_port_bus_type || dev->bus != &pcie_port_bus_type)
@@ -38,10 +37,8 @@ static int pcie_port_bus_match(struct device *dev, struct device_driver *drv)
 	if (driver->service != pciedev->service)
 		return 0;
 
-	port_data = pci_get_drvdata(pciedev->port);
-
-	if (driver->port_type != PCIE_ANY_PORT
-	     && driver->port_type != port_data->port_type)
+	if ((driver->port_type != PCIE_ANY_PORT) &&
+	    (driver->port_type != pciedev->port->pcie_type))
 		return 0;
 
 	return 1;

drivers/pci/pcie/portdrv_core.c

@@ -108,9 +108,9 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
 		 * the value in this field indicates which MSI-X Table entry is
 		 * used to generate the interrupt message."
 		 */
-		pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
-		pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg16);
-		entry = (reg16 >> 9) & PCIE_PORT_MSI_VECTOR_MASK;
+		pos = pci_pcie_cap(dev);
+		pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &reg16);
+		entry = (reg16 & PCI_EXP_FLAGS_IRQ) >> 9;
 		if (entry >= nr_entries)
 			goto Error;
 
@@ -177,37 +177,40 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask)
 }
 
 /**
- * assign_interrupt_mode - choose interrupt mode for PCI Express port services
- *                         (INTx, MSI-X, MSI) and set up vectors
+ * init_service_irqs - initialize irqs for PCI Express port services
  * @dev: PCI Express port to handle
- * @vectors: Array of interrupt vectors to populate
+ * @irqs: Array of irqs to populate
  * @mask: Bitmask of port capabilities returned by get_port_device_capability()
  *
  * Return value: Interrupt mode associated with the port
  */
-static int assign_interrupt_mode(struct pci_dev *dev, int *vectors, int mask)
+static int init_service_irqs(struct pci_dev *dev, int *irqs, int mask)
 {
-	int irq, interrupt_mode = PCIE_PORT_NO_IRQ;
-	int i;
+	int i, irq;
 
 	/* Try to use MSI-X if supported */
-	if (!pcie_port_enable_msix(dev, vectors, mask))
-		return PCIE_PORT_MSIX_MODE;
-
+	if (!pcie_port_enable_msix(dev, irqs, mask))
+		return 0;
 	/* We're not going to use MSI-X, so try MSI and fall back to INTx */
-	if (!pci_enable_msi(dev))
-		interrupt_mode = PCIE_PORT_MSI_MODE;
-
-	if (interrupt_mode == PCIE_PORT_NO_IRQ && dev->pin)
-		interrupt_mode = PCIE_PORT_INTx_MODE;
+	irq = -1;
+	if (!pci_enable_msi(dev) || dev->pin)
+		irq = dev->irq;
 
-	irq = interrupt_mode != PCIE_PORT_NO_IRQ ? dev->irq : -1;
 	for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++)
-		vectors[i] = irq;
+		irqs[i] = irq;
+	irqs[PCIE_PORT_SERVICE_VC_SHIFT] = -1;
 
-	vectors[PCIE_PORT_SERVICE_VC_SHIFT] = -1;
+	if (irq < 0)
+		return -ENODEV;
+	return 0;
+}
 
-	return interrupt_mode;
+static void cleanup_service_irqs(struct pci_dev *dev)
+{
+	if (dev->msix_enabled)
+		pci_disable_msix(dev);
+	else if (dev->msi_enabled)
+		pci_disable_msi(dev);
 }
 
 /**
@@ -226,13 +229,12 @@ static int get_port_device_capability(struct pci_dev *dev)
 	u16 reg16;
 	u32 reg32;
 
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
-	pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg16);
+	pos = pci_pcie_cap(dev);
+	pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &reg16);
 	/* Hot-Plug Capable */
-	if (reg16 & PORT_TO_SLOT_MASK) {
-		pci_read_config_dword(dev, 
-			pos + PCIE_SLOT_CAPABILITIES_REG, &reg32);
-		if (reg32 & SLOT_HP_CAPABLE_MASK)
+	if (reg16 & PCI_EXP_FLAGS_SLOT) {
+		pci_read_config_dword(dev, pos + PCI_EXP_SLTCAP, &reg32);
+		if (reg32 & PCI_EXP_SLTCAP_HPC)
 			services |= PCIE_PORT_SERVICE_HP;
 	}
 	/* AER capable */
@@ -241,80 +243,47 @@ static int get_port_device_capability(struct pci_dev *dev)
 	/* VC support */
 	if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_VC))
 		services |= PCIE_PORT_SERVICE_VC;
+	/* Root ports are capable of generating PME too */
+	if (dev->pcie_type == PCI_EXP_TYPE_ROOT_PORT)
+		services |= PCIE_PORT_SERVICE_PME;
 
 	return services;
 }
 
 /**
- * pcie_device_init - initialize PCI Express port service device
- * @dev: Port service device to initialize
- * @parent: PCI Express port to associate the service device with
- * @port_type: Type of the port
- * @service_type: Type of service to associate with the service device
+ * pcie_device_init - allocate and initialize PCI Express port service device
+ * @pdev: PCI Express port to associate the service device with
+ * @service: Type of service to associate with the service device
  * @irq: Interrupt vector to associate with the service device
  */
-static void pcie_device_init(struct pci_dev *parent, struct pcie_device *dev, 
-	int service_type, int irq)
+static int pcie_device_init(struct pci_dev *pdev, int service, int irq)
 {
-	struct pcie_port_data *port_data = pci_get_drvdata(parent);
+	int retval;
+	struct pcie_device *pcie;
 	struct device *device;
-	int port_type = port_data->port_type;
 
-	dev->port = parent;
-	dev->irq = irq;
-	dev->service = service_type;
+	pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
+		return -ENOMEM;
+	pcie->port = pdev;
+	pcie->irq = irq;
+	pcie->service = service;
 
 	/* Initialize generic device interface */
-	device = &dev->device;
-	memset(device, 0, sizeof(struct device));
+	device = &pcie->device;
 	device->bus = &pcie_port_bus_type;
-	device->driver = NULL;
-	dev_set_drvdata(device, NULL);
 	device->release = release_pcie_device;	/* callback to free pcie dev */
 	dev_set_name(device, "%s:pcie%02x",
-		 pci_name(parent), get_descriptor_id(port_type, service_type));
-	device->parent = &parent->dev;
-}
-
-/**
- * alloc_pcie_device - allocate PCI Express port service device structure
- * @parent: PCI Express port to associate the service device with
- * @port_type: Type of the port
- * @service_type: Type of service to associate with the service device
- * @irq: Interrupt vector to associate with the service device
- */
-static struct pcie_device* alloc_pcie_device(struct pci_dev *parent,
-	int service_type, int irq)
-{
-	struct pcie_device *device;
-
-	device = kzalloc(sizeof(struct pcie_device), GFP_KERNEL);
-	if (!device)
-		return NULL;
-
-	pcie_device_init(parent, device, service_type, irq);
-	return device;
-}
-
-/**
- * pcie_port_device_probe - check if device is a PCI Express port
- * @dev: Device to check
- */
-int pcie_port_device_probe(struct pci_dev *dev)
-{
-	int pos, type;
-	u16 reg;
-
-	if (!(pos = pci_find_capability(dev, PCI_CAP_ID_EXP)))
-		return -ENODEV;
-
-	pci_read_config_word(dev, pos + PCIE_CAPABILITIES_REG, &reg);
-	type = (reg >> 4) & PORT_TYPE_MASK;
-	if (	type == PCIE_RC_PORT || type == PCIE_SW_UPSTREAM_PORT ||
-		type == PCIE_SW_DOWNSTREAM_PORT )
-		return 0;
-
-	return -ENODEV;
+		     pci_name(pdev),
+		     get_descriptor_id(pdev->pcie_type, service));
+	device->parent = &pdev->dev;
+
+	retval = device_register(device);
+	if (retval)
+		kfree(pcie);
+	else
+		get_device(device);
+	return retval;
 }
 
 /**
@@ -326,77 +295,49 @@ int pcie_port_device_probe(struct pci_dev *dev)
  */
 int pcie_port_device_register(struct pci_dev *dev)
 {
-	struct pcie_port_data *port_data;
-	int status, capabilities, irq_mode, i, nr_serv;
-	int vectors[PCIE_PORT_DEVICE_MAXSERVICES];
-	u16 reg16;
-
-	port_data = kzalloc(sizeof(*port_data), GFP_KERNEL);
-	if (!port_data)
-		return -ENOMEM;
-	pci_set_drvdata(dev, port_data);
-
-	/* Get port type */
-	pci_read_config_word(dev,
-		pci_find_capability(dev, PCI_CAP_ID_EXP) +
-		PCIE_CAPABILITIES_REG, &reg16);
-	port_data->port_type = (reg16 >> 4) & PORT_TYPE_MASK;
+	int status, capabilities, i, nr_service;
+	int irqs[PCIE_PORT_DEVICE_MAXSERVICES];
 
+	/* Get and check PCI Express port services */
 	capabilities = get_port_device_capability(dev);
-	/* Root ports are capable of generating PME too */
-	if (port_data->port_type == PCIE_RC_PORT)
-		capabilities |= PCIE_PORT_SERVICE_PME;
-
-	irq_mode = assign_interrupt_mode(dev, vectors, capabilities);
-	if (irq_mode == PCIE_PORT_NO_IRQ) {
-		/*
-		 * Don't use service devices that require interrupts if there is
-		 * no way to generate them.
-		 */
-		if (!(capabilities & PCIE_PORT_SERVICE_VC)) {
-			status = -ENODEV;
-			goto Error;
-		}
-		capabilities = PCIE_PORT_SERVICE_VC;
-	}
-	port_data->port_irq_mode = irq_mode;
+	if (!capabilities)
+		return -ENODEV;
 
+	/* Enable PCI Express port device */
 	status = pci_enable_device(dev);
 	if (status)
-		goto Error;
+		return status;
 	pci_set_master(dev);
+	/*
+	 * Initialize service irqs. Don't use service devices that
+	 * require interrupts if there is no way to generate them.
+	 */
+	status = init_service_irqs(dev, irqs, capabilities);
+	if (status) {
+		capabilities &= PCIE_PORT_SERVICE_VC;
+		if (!capabilities)
+			goto error_disable;
+	}
 
 	/* Allocate child services if any */
-	for (i = 0, nr_serv = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) {
-		struct pcie_device *child;
+	status = -ENODEV;
+	nr_service = 0;
+	for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) {
 		int service = 1 << i;
-
 		if (!(capabilities & service))
 			continue;
-
-		child = alloc_pcie_device(dev, service, vectors[i]);
-		if (!child)
-			continue;
-
-		status = device_register(&child->device);
-		if (status) {
-			kfree(child);
-			continue;
-		}
-
-		get_device(&child->device);
-		nr_serv++;
-	}
-	if (!nr_serv) {
-		pci_disable_device(dev);
-		status = -ENODEV;
-		goto Error;
+		if (!pcie_device_init(dev, service, irqs[i]))
+			nr_service++;
 	}
+	if (!nr_service)
+		goto error_cleanup_irqs;
 
 	return 0;
 
- Error:
-	kfree(port_data);
+error_cleanup_irqs:
+	cleanup_service_irqs(dev);
+error_disable:
+	pci_disable_device(dev);
 	return status;
 }
 
@@ -464,21 +405,9 @@ static int remove_iter(struct device *dev, void *data)
  */
 void pcie_port_device_remove(struct pci_dev *dev)
 {
-	struct pcie_port_data *port_data = pci_get_drvdata(dev);
-
 	device_for_each_child(&dev->dev, NULL, remove_iter);
+	cleanup_service_irqs(dev);
 	pci_disable_device(dev);
-
-	switch (port_data->port_irq_mode) {
-	case PCIE_PORT_MSIX_MODE:
-		pci_disable_msix(dev);
-		break;
-	case PCIE_PORT_MSI_MODE:
-		pci_disable_msi(dev);
-		break;
-	}
-
-	kfree(port_data);
 }
 
 /**

drivers/pci/pcie/portdrv_pci.c

@@ -67,14 +67,16 @@ static struct dev_pm_ops pcie_portdrv_pm_ops = {
  * this port device.
  *
  */
-static int __devinit pcie_portdrv_probe (struct pci_dev *dev, 
-				const struct pci_device_id *id )
+static int __devinit pcie_portdrv_probe(struct pci_dev *dev,
+					const struct pci_device_id *id)
 {
-	int			status;
+	int status;
 
-	status = pcie_port_device_probe(dev);
-	if (status)
-		return status;
+	if (!pci_is_pcie(dev) ||
+	    ((dev->pcie_type != PCI_EXP_TYPE_ROOT_PORT) &&
+	     (dev->pcie_type != PCI_EXP_TYPE_UPSTREAM) &&
+	     (dev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM)))
+		return -ENODEV;
 
         if (!dev->irq && dev->pin) {
 		dev_warn(&dev->dev, "device [%04x:%04x] has invalid IRQ; "

drivers/pci/probe.c

@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/cpumask.h>
 #include <linux/pci-aspm.h>
+#include <acpi/acpi_hest.h>
 #include "pci.h"
 
 #define CARDBUS_LATENCY_TIMER	176	/* secondary latency timer */
@@ -163,12 +164,12 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
 {
 	u32 l, sz, mask;
 
-	mask = type ? ~PCI_ROM_ADDRESS_ENABLE : ~0;
+	mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
 
 	res->name = pci_name(dev);
 
 	pci_read_config_dword(dev, pos, &l);
-	pci_write_config_dword(dev, pos, mask);
+	pci_write_config_dword(dev, pos, l | mask);
 	pci_read_config_dword(dev, pos, &sz);
 	pci_write_config_dword(dev, pos, l);
 
@@ -223,9 +224,13 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
 			goto fail;
 
 		if ((sizeof(resource_size_t) < 8) && (sz64 > 0x100000000ULL)) {
-			dev_err(&dev->dev, "can't handle 64-bit BAR\n");
+			dev_err(&dev->dev, "reg %x: can't handle 64-bit BAR\n",
+				pos);
 			goto fail;
-		} else if ((sizeof(resource_size_t) < 8) && l) {
+		}
+
+		res->flags |= IORESOURCE_MEM_64;
+		if ((sizeof(resource_size_t) < 8) && l) {
 			/* Address above 32-bit boundary; disable the BAR */
 			pci_write_config_dword(dev, pos, 0);
 			pci_write_config_dword(dev, pos + 4, 0);
@@ -234,14 +239,9 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
 		} else {
 			res->start = l64;
 			res->end = l64 + sz64;
-			dev_printk(KERN_DEBUG, &dev->dev,
-				"reg %x %s: %pR\n", pos,
-				 (res->flags & IORESOURCE_PREFETCH) ?
-					"64bit mmio pref" : "64bit mmio",
-				 res);
+			dev_printk(KERN_DEBUG, &dev->dev, "reg %x: %pR\n",
+				   pos, res);
 		}
-
-		res->flags |= IORESOURCE_MEM_64;
 	} else {
 		sz = pci_size(l, sz, mask);
 
@@ -251,11 +251,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
 		res->start = l;
 		res->end = l + sz;
 
-		dev_printk(KERN_DEBUG, &dev->dev, "reg %x %s: %pR\n", pos,
-			(res->flags & IORESOURCE_IO) ? "io port" :
-			 ((res->flags & IORESOURCE_PREFETCH) ?
-				 "32bit mmio pref" : "32bit mmio"),
-			res);
+		dev_printk(KERN_DEBUG, &dev->dev, "reg %x: %pR\n", pos, res);
 	}
 
  out:
@@ -297,8 +293,11 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
 	if (pci_is_root_bus(child))	/* It's a host bus, nothing to read */
 		return;
 
+	dev_info(&dev->dev, "PCI bridge to [bus %02x-%02x]%s\n",
+		 child->secondary, child->subordinate,
+		 dev->transparent ? " (subtractive decode)": "");
+
 	if (dev->transparent) {
-		dev_info(&dev->dev, "transparent bridge\n");
 		for(i = 3; i < PCI_BUS_NUM_RESOURCES; i++)
 			child->resource[i] = child->parent->resource[i - 3];
 	}
@@ -323,7 +322,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
 			res->start = base;
 		if (!res->end)
 			res->end = limit + 0xfff;
-		dev_printk(KERN_DEBUG, &dev->dev, "bridge io port: %pR\n", res);
+		dev_printk(KERN_DEBUG, &dev->dev, "  bridge window %pR\n", res);
 	}
 
 	res = child->resource[1];
@@ -335,8 +334,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
 		res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM;
 		res->start = base;
 		res->end = limit + 0xfffff;
-		dev_printk(KERN_DEBUG, &dev->dev, "bridge 32bit mmio: %pR\n",
-			res);
+		dev_printk(KERN_DEBUG, &dev->dev, "  bridge window %pR\n", res);
 	}
 
 	res = child->resource[2];
@@ -375,9 +373,7 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
 			res->flags |= IORESOURCE_MEM_64;
 		res->start = base;
 		res->end = limit + 0xfffff;
-		dev_printk(KERN_DEBUG, &dev->dev, "bridge %sbit mmio pref: %pR\n",
-			(res->flags & PCI_PREF_RANGE_TYPE_64) ? "64" : "32",
-			res);
+		dev_printk(KERN_DEBUG, &dev->dev, "  bridge window %pR\n", res);
 	}
 }
 
@@ -651,13 +647,14 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
 		    (child->number > bus->subordinate) ||
 		    (child->number < bus->number) ||
 		    (child->subordinate < bus->number)) {
-			pr_debug("PCI: Bus #%02x (-#%02x) is %s "
-				"hidden behind%s bridge #%02x (-#%02x)\n",
+			dev_info(&child->dev, "[bus %02x-%02x] %s "
+				"hidden behind%s bridge %s [bus %02x-%02x]\n",
 				child->number, child->subordinate,
 				(bus->number > child->subordinate &&
 				 bus->subordinate < child->number) ?
 					"wholly" : "partially",
 				bus->self->transparent ? " transparent" : "",
+				dev_name(&bus->dev),
 				bus->number, bus->subordinate);
 		}
 		bus = bus->parent;
@@ -693,6 +690,7 @@ static void set_pcie_port_type(struct pci_dev *pdev)
 	if (!pos)
 		return;
 	pdev->is_pcie = 1;
+	pdev->pcie_cap = pos;
 	pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
 	pdev->pcie_type = (reg16 & PCI_EXP_FLAGS_TYPE) >> 4;
 }
@@ -703,7 +701,7 @@ static void set_pcie_hotplug_bridge(struct pci_dev *pdev)
 	u16 reg16;
 	u32 reg32;
 
-	pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(pdev);
 	if (!pos)
 		return;
 	pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
@@ -714,6 +712,12 @@ static void set_pcie_hotplug_bridge(struct pci_dev *pdev)
 		pdev->is_hotplug_bridge = 1;
 }
 
+static void set_pci_aer_firmware_first(struct pci_dev *pdev)
+{
+	if (acpi_hest_firmware_first_pci(pdev))
+		pdev->aer_firmware_first = 1;
+}
+
 #define LEGACY_IO_RESOURCE	(IORESOURCE_IO | IORESOURCE_PCI_FIXED)
 
 /**
@@ -731,6 +735,7 @@ int pci_setup_device(struct pci_dev *dev)
 	u32 class;
 	u8 hdr_type;
 	struct pci_slot *slot;
+	int pos = 0;
 
 	if (pci_read_config_byte(dev, PCI_HEADER_TYPE, &hdr_type))
 		return -EIO;
@@ -742,6 +747,7 @@ int pci_setup_device(struct pci_dev *dev)
 	dev->multifunction = !!(hdr_type & 0x80);
 	dev->error_state = pci_channel_io_normal;
 	set_pcie_port_type(dev);
+	set_pci_aer_firmware_first(dev);
 
 	list_for_each_entry(slot, &dev->bus->slots, list)
 		if (PCI_SLOT(dev->devfn) == slot->number)
@@ -822,6 +828,11 @@ int pci_setup_device(struct pci_dev *dev)
 		dev->transparent = ((dev->class & 0xff) == 1);
 		pci_read_bases(dev, 2, PCI_ROM_ADDRESS1);
 		set_pcie_hotplug_bridge(dev);
+		pos = pci_find_capability(dev, PCI_CAP_ID_SSVID);
+		if (pos) {
+			pci_read_config_word(dev, pos + PCI_SSVID_VENDOR_ID, &dev->subsystem_vendor);
+			pci_read_config_word(dev, pos + PCI_SSVID_DEVICE_ID, &dev->subsystem_device);
+		}
 		break;
 
 	case PCI_HEADER_TYPE_CARDBUS:		    /* CardBus bridge header */
@@ -907,7 +918,7 @@ int pci_cfg_space_size(struct pci_dev *dev)
 	if (class == PCI_CLASS_BRIDGE_HOST)
 		return pci_cfg_space_size_ext(dev);
 
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	pos = pci_pcie_cap(dev);
 	if (!pos) {
 		pos = pci_find_capability(dev, PCI_CAP_ID_PCIX);
 		if (!pos)
@@ -1014,6 +1025,9 @@ static void pci_init_capabilities(struct pci_dev *dev)
 
 	/* Single Root I/O Virtualization */
 	pci_iov_init(dev);
+
+	/* Enable ACS P2P upstream forwarding */
+	pci_enable_acs(dev);
 }
 
 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
@@ -1110,7 +1124,7 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
 	unsigned int devfn, pass, max = bus->secondary;
 	struct pci_dev *dev;
 
-	pr_debug("PCI: Scanning bus %04x:%02x\n", pci_domain_nr(bus), bus->number);
+	dev_dbg(&bus->dev, "scanning bus\n");
 
 	/* Go find them, Rover! */
 	for (devfn = 0; devfn < 0x100; devfn += 8)
@@ -1124,8 +1138,7 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
 	 * all PCI-to-PCI bridges on this bus.
 	 */
 	if (!bus->is_added) {
-		pr_debug("PCI: Fixups for bus %04x:%02x\n",
-			 pci_domain_nr(bus), bus->number);
+		dev_dbg(&bus->dev, "fixups for bus\n");
 		pcibios_fixup_bus(bus);
 		if (pci_is_root_bus(bus))
 			bus->is_added = 1;
@@ -1145,8 +1158,7 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
 	 *
 	 * Return how far we've got finding sub-buses.
 	 */
-	pr_debug("PCI: Bus scan for %04x:%02x returning with max=%02x\n",
-		pci_domain_nr(bus), bus->number, max);
+	dev_dbg(&bus->dev, "bus scan returning with max=%02x\n", max);
 	return max;
 }
 
@@ -1154,7 +1166,7 @@ struct pci_bus * pci_create_bus(struct device *parent,
 		int bus, struct pci_ops *ops, void *sysdata)
 {
 	int error;
-	struct pci_bus *b;
+	struct pci_bus *b, *b2;
 	struct device *dev;
 
 	b = pci_alloc_bus();
@@ -1170,9 +1182,10 @@ struct pci_bus * pci_create_bus(struct device *parent,
 	b->sysdata = sysdata;
 	b->ops = ops;
 
-	if (pci_find_bus(pci_domain_nr(b), bus)) {
+	b2 = pci_find_bus(pci_domain_nr(b), bus);
+	if (b2) {
 		/* If we already got to this bus through a different bridge, ignore it */
-		pr_debug("PCI: Bus %04x:%02x already known\n", pci_domain_nr(b), bus);
+		dev_dbg(&b2->dev, "bus already known\n");
 		goto err_out;
 	}
 

drivers/pci/quirks.c

@@ -357,7 +357,7 @@ static void __devinit quirk_io_region(struct pci_dev *dev, unsigned region,
 		pcibios_bus_to_resource(dev, res, &bus_region);
 
 		pci_claim_resource(dev, nr);
-		dev_info(&dev->dev, "quirk: region %04x-%04x claimed by %s\n", region, region + size - 1, name);
+		dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name);
 	}
 }	
 
@@ -1680,6 +1680,7 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_
  */
 #define AMD_813X_MISC			0x40
 #define AMD_813X_NOIOAMODE		(1<<0)
+#define AMD_813X_REV_B1			0x12
 #define AMD_813X_REV_B2			0x13
 
 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
@@ -1688,7 +1689,8 @@ static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
 
 	if (noioapicquirk)
 		return;
-	if (dev->revision == AMD_813X_REV_B2)
+	if ((dev->revision == AMD_813X_REV_B1) ||
+	    (dev->revision == AMD_813X_REV_B2))
 		return;
 
 	pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword);
@@ -1698,8 +1700,10 @@ static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev)
 	dev_info(&dev->dev, "disabled boot interrupts on device [%04x:%04x]\n",
 		 dev->vendor, dev->device);
 }
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8131_BRIDGE, 	quirk_disable_amd_813x_boot_interrupt);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,   PCI_DEVICE_ID_AMD_8132_BRIDGE, 	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8131_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8131_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8132_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8132_BRIDGE,	quirk_disable_amd_813x_boot_interrupt);
 
 #define AMD_8111_PCI_IRQ_ROUTING	0x56
 
@@ -2595,9 +2599,37 @@ void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
 static int __init pci_apply_final_quirks(void)
 {
 	struct pci_dev *dev = NULL;
+	u8 cls = 0;
+	u8 tmp;
+
+	if (pci_cache_line_size)
+		printk(KERN_DEBUG "PCI: CLS %u bytes\n",
+		       pci_cache_line_size << 2);
 
 	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
 		pci_fixup_device(pci_fixup_final, dev);
+		/*
+		 * If arch hasn't set it explicitly yet, use the CLS
+		 * value shared by all PCI devices.  If there's a
+		 * mismatch, fall back to the default value.
+		 */
+		if (!pci_cache_line_size) {
+			pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp);
+			if (!cls)
+				cls = tmp;
+			if (!tmp || cls == tmp)
+				continue;
+
+			printk(KERN_DEBUG "PCI: CLS mismatch (%u != %u), "
+			       "using %u bytes\n", cls << 2, tmp << 2,
+			       pci_dfl_cache_line_size << 2);
+			pci_cache_line_size = pci_dfl_cache_line_size;
+		}
+	}
+	if (!pci_cache_line_size) {
+		printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n",
+		       cls << 2, pci_dfl_cache_line_size << 2);
+		pci_cache_line_size = cls;
 	}
 
 	return 0;

drivers/pci/search.c

@@ -26,14 +26,14 @@ pci_find_upstream_pcie_bridge(struct pci_dev *pdev)
 {
 	struct pci_dev *tmp = NULL;
 
-	if (pdev->is_pcie)
+	if (pci_is_pcie(pdev))
 		return NULL;
 	while (1) {
 		if (pci_is_root_bus(pdev->bus))
 			break;
 		pdev = pdev->bus->self;
 		/* a p2p bridge */
-		if (!pdev->is_pcie) {
+		if (!pci_is_pcie(pdev)) {
 			tmp = pdev;
 			continue;
 		}
@@ -149,32 +149,33 @@ struct pci_dev * pci_get_slot(struct pci_bus *bus, unsigned int devfn)
 }
 
 /**
- * pci_get_bus_and_slot - locate PCI device from a given PCI bus & slot
- * @bus: number of PCI bus on which desired PCI device resides
- * @devfn: encodes number of PCI slot in which the desired PCI
- * device resides and the logical device number within that slot
- * in case of multi-function devices.
- *
- * Note: the bus/slot search is limited to PCI domain (segment) 0.
+ * pci_get_domain_bus_and_slot - locate PCI device for a given PCI domain (segment), bus, and slot
+ * @domain: PCI domain/segment on which the PCI device resides.
+ * @bus: PCI bus on which desired PCI device resides
+ * @devfn: encodes number of PCI slot in which the desired PCI device
+ * resides and the logical device number within that slot in case of
+ * multi-function devices.
  *
- * Given a PCI bus and slot/function number, the desired PCI device
- * is located in system global list of PCI devices.  If the device
- * is found, a pointer to its data structure is returned.  If no
- * device is found, %NULL is returned. The returned device has its
- * reference count bumped by one.
+ * Given a PCI domain, bus, and slot/function number, the desired PCI
+ * device is located in the list of PCI devices. If the device is
+ * found, its reference count is increased and this function returns a
+ * pointer to its data structure.  The caller must decrement the
+ * reference count by calling pci_dev_put().  If no device is found,
+ * %NULL is returned.
  */
-
-struct pci_dev * pci_get_bus_and_slot(unsigned int bus, unsigned int devfn)
+struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
+					    unsigned int devfn)
 {
 	struct pci_dev *dev = NULL;
 
 	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
-		if (pci_domain_nr(dev->bus) == 0 &&
-		   (dev->bus->number == bus && dev->devfn == devfn))
+		if (pci_domain_nr(dev->bus) == domain &&
+		    (dev->bus->number == bus && dev->devfn == devfn))
 			return dev;
 	}
 	return NULL;
 }
+EXPORT_SYMBOL(pci_get_domain_bus_and_slot);
 
 static int match_pci_dev_by_id(struct device *dev, void *data)
 {
@@ -354,5 +355,4 @@ EXPORT_SYMBOL(pci_find_next_bus);
 EXPORT_SYMBOL(pci_get_device);
 EXPORT_SYMBOL(pci_get_subsys);
 EXPORT_SYMBOL(pci_get_slot);
-EXPORT_SYMBOL(pci_get_bus_and_slot);
 EXPORT_SYMBOL(pci_get_class);

drivers/pci/setup-bus.c

@@ -71,53 +71,50 @@ static void pbus_assign_resources_sorted(const struct pci_bus *bus)
 void pci_setup_cardbus(struct pci_bus *bus)
 {
 	struct pci_dev *bridge = bus->self;
+	struct resource *res;
 	struct pci_bus_region region;
 
-	dev_info(&bridge->dev, "CardBus bridge, secondary bus %04x:%02x\n",
-		 pci_domain_nr(bus), bus->number);
+	dev_info(&bridge->dev, "CardBus bridge to [bus %02x-%02x]\n",
+		 bus->secondary, bus->subordinate);
 
-	pcibios_resource_to_bus(bridge, &region, bus->resource[0]);
-	if (bus->resource[0]->flags & IORESOURCE_IO) {
+	res = bus->resource[0];
+	pcibios_resource_to_bus(bridge, &region, res);
+	if (res->flags & IORESOURCE_IO) {
 		/*
 		 * The IO resource is allocated a range twice as large as it
 		 * would normally need.  This allows us to set both IO regs.
 		 */
-		dev_info(&bridge->dev, "  IO window: %#08lx-%#08lx\n",
-		       (unsigned long)region.start,
-		       (unsigned long)region.end);
+		dev_info(&bridge->dev, "  bridge window %pR\n", res);
 		pci_write_config_dword(bridge, PCI_CB_IO_BASE_0,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_IO_LIMIT_0,
 					region.end);
 	}
 
-	pcibios_resource_to_bus(bridge, &region, bus->resource[1]);
-	if (bus->resource[1]->flags & IORESOURCE_IO) {
-		dev_info(&bridge->dev, "  IO window: %#08lx-%#08lx\n",
-		       (unsigned long)region.start,
-		       (unsigned long)region.end);
+	res = bus->resource[1];
+	pcibios_resource_to_bus(bridge, &region, res);
+	if (res->flags & IORESOURCE_IO) {
+		dev_info(&bridge->dev, "  bridge window %pR\n", res);
 		pci_write_config_dword(bridge, PCI_CB_IO_BASE_1,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_IO_LIMIT_1,
 					region.end);
 	}
 
-	pcibios_resource_to_bus(bridge, &region, bus->resource[2]);
-	if (bus->resource[2]->flags & IORESOURCE_MEM) {
-		dev_info(&bridge->dev, "  PREFETCH window: %#08lx-%#08lx\n",
-		       (unsigned long)region.start,
-		       (unsigned long)region.end);
+	res = bus->resource[2];
+	pcibios_resource_to_bus(bridge, &region, res);
+	if (res->flags & IORESOURCE_MEM) {
+		dev_info(&bridge->dev, "  bridge window %pR\n", res);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_BASE_0,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_LIMIT_0,
 					region.end);
 	}
 
-	pcibios_resource_to_bus(bridge, &region, bus->resource[3]);
-	if (bus->resource[3]->flags & IORESOURCE_MEM) {
-		dev_info(&bridge->dev, "  MEM window: %#08lx-%#08lx\n",
-		       (unsigned long)region.start,
-		       (unsigned long)region.end);
+	res = bus->resource[3];
+	pcibios_resource_to_bus(bridge, &region, res);
+	if (res->flags & IORESOURCE_MEM) {
+		dev_info(&bridge->dev, "  bridge window %pR\n", res);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_BASE_1,
 					region.start);
 		pci_write_config_dword(bridge, PCI_CB_MEMORY_LIMIT_1,
@@ -140,34 +137,33 @@ EXPORT_SYMBOL(pci_setup_cardbus);
 static void pci_setup_bridge(struct pci_bus *bus)
 {
 	struct pci_dev *bridge = bus->self;
+	struct resource *res;
 	struct pci_bus_region region;
 	u32 l, bu, lu, io_upper16;
-	int pref_mem64;
 
 	if (pci_is_enabled(bridge))
 		return;
 
-	dev_info(&bridge->dev, "PCI bridge, secondary bus %04x:%02x\n",
-		 pci_domain_nr(bus), bus->number);
+	dev_info(&bridge->dev, "PCI bridge to [bus %02x-%02x]\n",
+		 bus->secondary, bus->subordinate);
 
 	/* Set up the top and bottom of the PCI I/O segment for this bus. */
-	pcibios_resource_to_bus(bridge, &region, bus->resource[0]);
-	if (bus->resource[0]->flags & IORESOURCE_IO) {
+	res = bus->resource[0];
+	pcibios_resource_to_bus(bridge, &region, res);
+	if (res->flags & IORESOURCE_IO) {
 		pci_read_config_dword(bridge, PCI_IO_BASE, &l);
 		l &= 0xffff0000;
 		l |= (region.start >> 8) & 0x00f0;
 		l |= region.end & 0xf000;
 		/* Set up upper 16 bits of I/O base/limit. */
 		io_upper16 = (region.end & 0xffff0000) | (region.start >> 16);
-		dev_info(&bridge->dev, "  IO window: %#04lx-%#04lx\n",
-		    (unsigned long)region.start,
-		    (unsigned long)region.end);
+		dev_info(&bridge->dev, "  bridge window %pR\n", res);
 	}
 	else {
 		/* Clear upper 16 bits of I/O base/limit. */
 		io_upper16 = 0;
 		l = 0x00f0;
-		dev_info(&bridge->dev, "  IO window: disabled\n");
+		dev_info(&bridge->dev, "  bridge window [io  disabled]\n");
 	}
 	/* Temporarily disable the I/O range before updating PCI_IO_BASE. */
 	pci_write_config_dword(bridge, PCI_IO_BASE_UPPER16, 0x0000ffff);
@@ -178,17 +174,16 @@ static void pci_setup_bridge(struct pci_bus *bus)
 
 	/* Set up the top and bottom of the PCI Memory segment
 	   for this bus. */
-	pcibios_resource_to_bus(bridge, &region, bus->resource[1]);
-	if (bus->resource[1]->flags & IORESOURCE_MEM) {
+	res = bus->resource[1];
+	pcibios_resource_to_bus(bridge, &region, res);
+	if (res->flags & IORESOURCE_MEM) {
 		l = (region.start >> 16) & 0xfff0;
 		l |= region.end & 0xfff00000;
-		dev_info(&bridge->dev, "  MEM window: %#08lx-%#08lx\n",
-		    (unsigned long)region.start,
-		    (unsigned long)region.end);
+		dev_info(&bridge->dev, "  bridge window %pR\n", res);
 	}
 	else {
 		l = 0x0000fff0;
-		dev_info(&bridge->dev, "  MEM window: disabled\n");
+		dev_info(&bridge->dev, "  bridge window [mem disabled]\n");
 	}
 	pci_write_config_dword(bridge, PCI_MEMORY_BASE, l);
 
@@ -198,34 +193,27 @@ static void pci_setup_bridge(struct pci_bus *bus)
 	pci_write_config_dword(bridge, PCI_PREF_LIMIT_UPPER32, 0);
 
 	/* Set up PREF base/limit. */
-	pref_mem64 = 0;
 	bu = lu = 0;
-	pcibios_resource_to_bus(bridge, &region, bus->resource[2]);
-	if (bus->resource[2]->flags & IORESOURCE_PREFETCH) {
-		int width = 8;
+	res = bus->resource[2];
+	pcibios_resource_to_bus(bridge, &region, res);
+	if (res->flags & IORESOURCE_PREFETCH) {
 		l = (region.start >> 16) & 0xfff0;
 		l |= region.end & 0xfff00000;
-		if (bus->resource[2]->flags & IORESOURCE_MEM_64) {
-			pref_mem64 = 1;
+		if (res->flags & IORESOURCE_MEM_64) {
 			bu = upper_32_bits(region.start);
 			lu = upper_32_bits(region.end);
-			width = 16;
 		}
-		dev_info(&bridge->dev, "  PREFETCH window: %#0*llx-%#0*llx\n",
-				width, (unsigned long long)region.start,
-				width, (unsigned long long)region.end);
+		dev_info(&bridge->dev, "  bridge window %pR\n", res);
 	}
 	else {
 		l = 0x0000fff0;
-		dev_info(&bridge->dev, "  PREFETCH window: disabled\n");
+		dev_info(&bridge->dev, "  bridge window [mem pref disabled]\n");
 	}
 	pci_write_config_dword(bridge, PCI_PREF_MEMORY_BASE, l);
 
-	if (pref_mem64) {
-		/* 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);
-	}
+	/* 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);
 }
@@ -345,6 +333,10 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size)
 #endif
 	size = ALIGN(size + size1, 4096);
 	if (!size) {
+		if (b_res->start || b_res->end)
+			dev_info(&bus->self->dev, "disabling bridge window "
+				 "%pR to [bus %02x-%02x] (unused)\n", b_res,
+				 bus->secondary, bus->subordinate);
 		b_res->flags = 0;
 		return;
 	}
@@ -390,8 +382,9 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
 			align = pci_resource_alignment(dev, r);
 			order = __ffs(align) - 20;
 			if (order > 11) {
-				dev_warn(&dev->dev, "BAR %d bad alignment %llx: "
-					 "%pR\n", i, (unsigned long long)align, r);
+				dev_warn(&dev->dev, "disabling BAR %d: %pR "
+					 "(bad alignment %#llx)\n", i, r,
+					 (unsigned long long) align);
 				r->flags = 0;
 				continue;
 			}
@@ -425,6 +418,10 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
 	}
 	size = ALIGN(size, min_align);
 	if (!size) {
+		if (b_res->start || b_res->end)
+			dev_info(&bus->self->dev, "disabling bridge window "
+				 "%pR to [bus %02x-%02x] (unused)\n", b_res,
+				 bus->secondary, bus->subordinate);
 		b_res->flags = 0;
 		return 1;
 	}
@@ -582,10 +579,7 @@ static void pci_bus_dump_res(struct pci_bus *bus)
                 if (!res || !res->end)
                         continue;
 
-		dev_printk(KERN_DEBUG, &bus->dev, "resource %d %s %pR\n", i,
-			   (res->flags & IORESOURCE_IO) ? "io: " :
-			    ((res->flags & IORESOURCE_PREFETCH)? "pref mem":"mem:"),
-			   res);
+		dev_printk(KERN_DEBUG, &bus->dev, "resource %d %pR\n", i, res);
         }
 }
 

drivers/pci/setup-res.c

@@ -51,12 +51,6 @@ void pci_update_resource(struct pci_dev *dev, int resno)
 
 	pcibios_resource_to_bus(dev, &region, res);
 
-	dev_dbg(&dev->dev, "BAR %d: got res %pR bus [%#llx-%#llx] "
-		"flags %#lx\n", resno, res,
-		 (unsigned long long)region.start,
-		 (unsigned long long)region.end,
-		 (unsigned long)res->flags);
-
 	new = region.start | (res->flags & PCI_REGION_FLAG_MASK);
 	if (res->flags & IORESOURCE_IO)
 		mask = (u32)PCI_BASE_ADDRESS_IO_MASK;
@@ -91,9 +85,9 @@ void pci_update_resource(struct pci_dev *dev, int resno)
 		}
 	}
 	res->flags &= ~IORESOURCE_UNSET;
-	dev_dbg(&dev->dev, "BAR %d: moved to bus [%#llx-%#llx] flags %#lx\n",
-		resno, (unsigned long long)region.start,
-		(unsigned long long)region.end, res->flags);
+	dev_info(&dev->dev, "BAR %d: set to %pR (PCI address [%#llx-%#llx]\n",
+		 resno, res, (unsigned long long)region.start,
+		 (unsigned long long)region.end);
 }
 
 int pci_claim_resource(struct pci_dev *dev, int resource)
@@ -103,20 +97,17 @@ int pci_claim_resource(struct pci_dev *dev, int resource)
 	int err;
 
 	root = pci_find_parent_resource(dev, res);
-
-	err = -EINVAL;
-	if (root != NULL)
-		err = request_resource(root, res);
-
-	if (err) {
-		const char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
-		dev_err(&dev->dev, "BAR %d: %s of %s %pR\n",
-			resource,
-			root ? "address space collision on" :
-				"no parent found for",
-			dtype, res);
+	if (!root) {
+		dev_err(&dev->dev, "no compatible bridge window for %pR\n",
+			res);
+		return -EINVAL;
 	}
 
+	err = request_resource(root, res);
+	if (err)
+		dev_err(&dev->dev,
+			"address space collision: %pR already in use\n", res);
+
 	return err;
 }
 EXPORT_SYMBOL(pci_claim_resource);
@@ -124,7 +115,7 @@ EXPORT_SYMBOL(pci_claim_resource);
 #ifdef CONFIG_PCI_QUIRKS
 void pci_disable_bridge_window(struct pci_dev *dev)
 {
-	dev_dbg(&dev->dev, "Disabling bridge window.\n");
+	dev_info(&dev->dev, "disabling bridge mem windows\n");
 
 	/* MMIO Base/Limit */
 	pci_write_config_dword(dev, PCI_MEMORY_BASE, 0x0000fff0);
@@ -165,6 +156,7 @@ static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,
 
 	if (!ret) {
 		res->flags &= ~IORESOURCE_STARTALIGN;
+		dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
 		if (resno < PCI_BRIDGE_RESOURCES)
 			pci_update_resource(dev, resno);
 	}
@@ -178,12 +170,12 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
 	resource_size_t align;
 	struct pci_bus *bus;
 	int ret;
+	char *type;
 
 	align = pci_resource_alignment(dev, res);
 	if (!align) {
-		dev_info(&dev->dev, "BAR %d: can't allocate resource (bogus "
-			"alignment) %pR flags %#lx\n",
-			resno, res, res->flags);
+		dev_info(&dev->dev, "BAR %d: can't assign %pR "
+			 "(bogus alignment)\n", resno, res);
 		return -EINVAL;
 	}
 
@@ -198,9 +190,20 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
 		break;
 	}
 
-	if (ret)
-		dev_info(&dev->dev, "BAR %d: can't allocate %s resource %pR\n",
-			resno, res->flags & IORESOURCE_IO ? "I/O" : "mem", res);
+	if (ret) {
+		if (res->flags & IORESOURCE_MEM)
+			if (res->flags & IORESOURCE_PREFETCH)
+				type = "mem pref";
+			else
+				type = "mem";
+		else if (res->flags & IORESOURCE_IO)
+			type = "io";
+		else
+			type = "unknown";
+		dev_info(&dev->dev,
+			 "BAR %d: can't assign %s (size %#llx)\n",
+			 resno, type, (unsigned long long) resource_size(res));
+	}
 
 	return ret;
 }
@@ -225,9 +228,8 @@ void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
 
 		r_align = pci_resource_alignment(dev, r);
 		if (!r_align) {
-			dev_warn(&dev->dev, "BAR %d: bogus alignment "
-				"%pR flags %#lx\n",
-				i, r, r->flags);
+			dev_warn(&dev->dev, "BAR %d: %pR has bogus alignment\n",
+				 i, r);
 			continue;
 		}
 		for (list = head; ; list = list->next) {
@@ -274,8 +276,8 @@ int pci_enable_resources(struct pci_dev *dev, int mask)
 			continue;
 
 		if (!r->parent) {
-			dev_err(&dev->dev, "device not available because of "
-				"BAR %d %pR collisions\n", i, r);
+			dev_err(&dev->dev, "device not available "
+				"(can't reserve %pR)\n", r);
 			return -EINVAL;
 		}
 

drivers/pcmcia/cardbus.c

@@ -184,26 +184,33 @@ fail:
     
 =====================================================================*/
 
-/*
- * Since there is only one interrupt available to CardBus
- * devices, all devices downstream of this device must
- * be using this IRQ.
- */
-static void cardbus_assign_irqs(struct pci_bus *bus, int irq)
+static void cardbus_config_irq_and_cls(struct pci_bus *bus, int irq)
 {
 	struct pci_dev *dev;
 
 	list_for_each_entry(dev, &bus->devices, bus_list) {
 		u8 irq_pin;
 
+		/*
+		 * Since there is only one interrupt available to
+		 * CardBus devices, all devices downstream of this
+		 * device must be using this IRQ.
+		 */
 		pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &irq_pin);
 		if (irq_pin) {
 			dev->irq = irq;
 			pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
 		}
 
+		/*
+		 * Some controllers transfer very slowly with 0 CLS.
+		 * Configure it.  This may fail as CLS configuration
+		 * is mandatory only for MWI.
+		 */
+		pci_set_cacheline_size(dev);
+
 		if (dev->subordinate)
-			cardbus_assign_irqs(dev->subordinate, irq);
+			cardbus_config_irq_and_cls(dev->subordinate, irq);
 	}
 }
 
@@ -228,7 +235,7 @@ int __ref cb_alloc(struct pcmcia_socket * s)
 	 */
 	pci_bus_size_bridges(bus);
 	pci_bus_assign_resources(bus);
-	cardbus_assign_irqs(bus, s->pci_irq);
+	cardbus_config_irq_and_cls(bus, s->pci_irq);
 
 	/* socket specific tune function */
 	if (s->tune_bridge)

drivers/pnp/quirks.c

@@ -285,15 +285,10 @@ static void quirk_system_pci_resources(struct pnp_dev *dev)
 				 * the PCI region, and that might prevent a PCI
 				 * driver from requesting its resources.
 				 */
-				dev_warn(&dev->dev, "%s resource "
-					"(0x%llx-0x%llx) overlaps %s BAR %d "
-					"(0x%llx-0x%llx), disabling\n",
-					pnp_resource_type_name(res),
-					(unsigned long long) pnp_start,
-					(unsigned long long) pnp_end,
-					pci_name(pdev), i,
-					(unsigned long long) pci_start,
-					(unsigned long long) pci_end);
+				dev_warn(&dev->dev,
+					 "disabling %pR because it overlaps "
+					 "%s BAR %d %pR\n", res,
+					 pci_name(pdev), i, &pdev->resource[i]);
 				res->flags |= IORESOURCE_DISABLED;
 			}
 		}

drivers/pnp/resource.c

@@ -517,7 +517,7 @@ struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
 	res->start = irq;
 	res->end = irq;
 
-	pnp_dbg(&dev->dev, "  add irq %d flags %#x\n", irq, flags);
+	pnp_dbg(&dev->dev, "  add %pr\n", res);
 	return pnp_res;
 }
 
@@ -538,7 +538,7 @@ struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
 	res->start = dma;
 	res->end = dma;
 
-	pnp_dbg(&dev->dev, "  add dma %d flags %#x\n", dma, flags);
+	pnp_dbg(&dev->dev, "  add %pr\n", res);
 	return pnp_res;
 }
 
@@ -562,8 +562,7 @@ struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
 	res->start = start;
 	res->end = end;
 
-	pnp_dbg(&dev->dev, "  add io  %#llx-%#llx flags %#x\n",
-		(unsigned long long) start, (unsigned long long) end, flags);
+	pnp_dbg(&dev->dev, "  add %pr\n", res);
 	return pnp_res;
 }
 
@@ -587,8 +586,7 @@ struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
 	res->start = start;
 	res->end = end;
 
-	pnp_dbg(&dev->dev, "  add mem %#llx-%#llx flags %#x\n",
-		(unsigned long long) start, (unsigned long long) end, flags);
+	pnp_dbg(&dev->dev, "  add %pr\n", res);
 	return pnp_res;
 }
 

drivers/pnp/support.c

@@ -75,47 +75,14 @@ char *pnp_resource_type_name(struct resource *res)
 
 void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc)
 {
-	char buf[128];
-	int len;
 	struct pnp_resource *pnp_res;
-	struct resource *res;
 
-	if (list_empty(&dev->resources)) {
+	if (list_empty(&dev->resources))
 		pnp_dbg(&dev->dev, "%s: no current resources\n", desc);
-		return;
-	}
-
-	pnp_dbg(&dev->dev, "%s: current resources:\n", desc);
-	list_for_each_entry(pnp_res, &dev->resources, list) {
-		res = &pnp_res->res;
-		len = 0;
-
-		len += scnprintf(buf + len, sizeof(buf) - len, "  %-3s ",
-				 pnp_resource_type_name(res));
-
-		if (res->flags & IORESOURCE_DISABLED) {
-			pnp_dbg(&dev->dev, "%sdisabled\n", buf);
-			continue;
-		}
-
-		switch (pnp_resource_type(res)) {
-		case IORESOURCE_IO:
-		case IORESOURCE_MEM:
-			len += scnprintf(buf + len, sizeof(buf) - len,
-					 "%#llx-%#llx flags %#lx",
-					 (unsigned long long) res->start,
-					 (unsigned long long) res->end,
-					 res->flags);
-			break;
-		case IORESOURCE_IRQ:
-		case IORESOURCE_DMA:
-			len += scnprintf(buf + len, sizeof(buf) - len,
-					 "%lld flags %#lx",
-					 (unsigned long long) res->start,
-					 res->flags);
-			break;
-		}
-		pnp_dbg(&dev->dev, "%s\n", buf);
+	else {
+		pnp_dbg(&dev->dev, "%s: current resources:\n", desc);
+		list_for_each_entry(pnp_res, &dev->resources, list)
+			pnp_dbg(&dev->dev, "%pr\n", &pnp_res->res);
 	}
 }
 

drivers/pnp/system.c

@@ -22,11 +22,11 @@ static const struct pnp_device_id pnp_dev_table[] = {
 	{"", 0}
 };
 
-static void reserve_range(struct pnp_dev *dev, resource_size_t start,
-			  resource_size_t end, int port)
+static void reserve_range(struct pnp_dev *dev, struct resource *r, int port)
 {
 	char *regionid;
 	const char *pnpid = dev_name(&dev->dev);
+	resource_size_t start = r->start, end = r->end;
 	struct resource *res;
 
 	regionid = kmalloc(16, GFP_KERNEL);
@@ -48,10 +48,8 @@ static void reserve_range(struct pnp_dev *dev, resource_size_t start,
 	 * example do reserve stuff they know about too, so we may well
 	 * have double reservations.
 	 */
-	dev_info(&dev->dev, "%s range 0x%llx-0x%llx %s reserved\n",
-		port ? "ioport" : "iomem",
-		(unsigned long long) start, (unsigned long long) end,
-		res ? "has been" : "could not be");
+	dev_info(&dev->dev, "%pR %s reserved\n", r,
+		 res ? "has been" : "could not be");
 }
 
 static void reserve_resources_of_dev(struct pnp_dev *dev)
@@ -77,14 +75,14 @@ static void reserve_resources_of_dev(struct pnp_dev *dev)
 		if (res->end < res->start)
 			continue;	/* invalid */
 
-		reserve_range(dev, res->start, res->end, 1);
+		reserve_range(dev, res, 1);
 	}
 
 	for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
 		if (res->flags & IORESOURCE_DISABLED)
 			continue;
 
-		reserve_range(dev, res->start, res->end, 0);
+		reserve_range(dev, res, 0);
 	}
 }
 

drivers/video/xen-fbfront.c

@@ -25,7 +25,10 @@
 #include <linux/module.h>
 #include <linux/vmalloc.h>
 #include <linux/mm.h>
+
 #include <asm/xen/hypervisor.h>
+
+#include <xen/xen.h>
 #include <xen/events.h>
 #include <xen/page.h>
 #include <xen/interface/io/fbif.h>

drivers/xen/balloon.c

@@ -52,6 +52,8 @@
 
 #include <asm/xen/hypervisor.h>
 #include <asm/xen/hypercall.h>
+
+#include <xen/xen.h>
 #include <xen/interface/xen.h>
 #include <xen/interface/memory.h>
 #include <xen/xenbus.h>

drivers/xen/cpu_hotplug.c

@@ -1,5 +1,6 @@
 #include <linux/notifier.h>
 
+#include <xen/xen.h>
 #include <xen/xenbus.h>
 
 #include <asm/xen/hypervisor.h>

drivers/xen/evtchn.c

@@ -48,6 +48,8 @@
 #include <linux/gfp.h>
 #include <linux/mutex.h>
 #include <linux/cpu.h>
+
+#include <xen/xen.h>
 #include <xen/events.h>
 #include <xen/evtchn.h>
 #include <asm/xen/hypervisor.h>

drivers/xen/grant-table.c

@@ -37,6 +37,7 @@
 #include <linux/vmalloc.h>
 #include <linux/uaccess.h>
 
+#include <xen/xen.h>
 #include <xen/interface/xen.h>
 #include <xen/page.h>
 #include <xen/grant_table.h>

drivers/xen/sys-hypervisor.c

@@ -14,6 +14,7 @@
 #include <asm/xen/hypervisor.h>
 #include <asm/xen/hypercall.h>
 
+#include <xen/xen.h>
 #include <xen/xenbus.h>
 #include <xen/interface/xen.h>
 #include <xen/interface/version.h>

drivers/xen/xenbus/xenbus_probe.c

@@ -49,6 +49,8 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/xen/hypervisor.h>
+
+#include <xen/xen.h>
 #include <xen/xenbus.h>
 #include <xen/events.h>
 #include <xen/page.h>

drivers/xen/xenfs/super.c

@@ -13,6 +13,8 @@
 #include <linux/fs.h>
 #include <linux/magic.h>
 
+#include <xen/xen.h>
+
 #include "xenfs.h"
 
 #include <asm/xen/hypervisor.h>

include/acpi/acpi_hest.h

@@ -0,0 +1,12 @@
+#ifndef __ACPI_HEST_H
+#define __ACPI_HEST_H
+
+#include <linux/pci.h>
+
+#ifdef CONFIG_ACPI
+extern int acpi_hest_firmware_first_pci(struct pci_dev *pci);
+#else
+static inline int acpi_hest_firmware_first_pci(struct pci_dev *pci) { return 0; }
+#endif
+
+#endif

include/linux/pci.h

@@ -218,6 +218,7 @@ struct pci_dev {
 	unsigned int	class;		/* 3 bytes: (base,sub,prog-if) */
 	u8		revision;	/* PCI revision, low byte of class word */
 	u8		hdr_type;	/* PCI header type (`multi' flag masked out) */
+	u8		pcie_cap;	/* PCI-E capability offset */
 	u8		pcie_type;	/* PCI-E device/port type */
 	u8		rom_base_reg;	/* which config register controls the ROM */
 	u8		pin;  		/* which interrupt pin this device uses */
@@ -280,6 +281,7 @@ struct pci_dev {
 	unsigned int	is_virtfn:1;
 	unsigned int	reset_fn:1;
 	unsigned int    is_hotplug_bridge:1;
+	unsigned int    aer_firmware_first:1;
 	pci_dev_flags_t dev_flags;
 	atomic_t	enable_cnt;	/* pci_enable_device has been called */
 
@@ -635,7 +637,13 @@ 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_domain_bus_and_slot(int domain, unsigned int bus,
+					    unsigned int devfn);
+static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
+						   unsigned int devfn)
+{
+	return pci_get_domain_bus_and_slot(0, bus, devfn);
+}
 struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
 int pci_dev_present(const struct pci_device_id *ids);
 
@@ -701,6 +709,7 @@ void pci_disable_device(struct pci_dev *dev);
 void pci_set_master(struct pci_dev *dev);
 void pci_clear_master(struct pci_dev *dev);
 int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
+int pci_set_cacheline_size(struct pci_dev *dev);
 #define HAVE_PCI_SET_MWI
 int __must_check pci_set_mwi(struct pci_dev *dev);
 int pci_try_set_mwi(struct pci_dev *dev);
@@ -1246,6 +1255,8 @@ extern int pci_pci_problems;
 
 extern unsigned long pci_cardbus_io_size;
 extern unsigned long pci_cardbus_mem_size;
+extern u8 pci_dfl_cache_line_size;
+extern u8 pci_cache_line_size;
 
 extern unsigned long pci_hotplug_io_size;
 extern unsigned long pci_hotplug_mem_size;
@@ -1290,5 +1301,34 @@ extern void pci_hp_create_module_link(struct pci_slot *pci_slot);
 extern void pci_hp_remove_module_link(struct pci_slot *pci_slot);
 #endif
 
+/**
+ * pci_pcie_cap - get the saved PCIe capability offset
+ * @dev: PCI device
+ *
+ * PCIe capability offset is calculated at PCI device initialization
+ * time and saved in the data structure. This function returns saved
+ * PCIe capability offset. Using this instead of pci_find_capability()
+ * reduces unnecessary search in the PCI configuration space. If you
+ * need to calculate PCIe capability offset from raw device for some
+ * reasons, please use pci_find_capability() instead.
+ */
+static inline int pci_pcie_cap(struct pci_dev *dev)
+{
+	return dev->pcie_cap;
+}
+
+/**
+ * pci_is_pcie - check if the PCI device is PCI Express capable
+ * @dev: PCI device
+ *
+ * Retrun true if the PCI device is PCI Express capable, false otherwise.
+ */
+static inline bool pci_is_pcie(struct pci_dev *dev)
+{
+	return !!pci_pcie_cap(dev);
+}
+
+void pci_request_acs(void);
+
 #endif /* __KERNEL__ */
 #endif /* LINUX_PCI_H */

include/linux/pci_regs.h

@@ -365,6 +365,11 @@
 #define  PCI_X_STATUS_266MHZ	0x40000000	/* 266 MHz capable */
 #define  PCI_X_STATUS_533MHZ	0x80000000	/* 533 MHz capable */
 
+/* PCI Bridge Subsystem ID registers */
+
+#define PCI_SSVID_VENDOR_ID     4	/* PCI-Bridge subsystem vendor id register */
+#define PCI_SSVID_DEVICE_ID     6	/* PCI-Bridge subsystem device id register */
+
 /* PCI Express capability registers */
 
 #define PCI_EXP_FLAGS		2	/* Capabilities register */
@@ -502,6 +507,7 @@
 #define PCI_EXT_CAP_ID_VC	2
 #define PCI_EXT_CAP_ID_DSN	3
 #define PCI_EXT_CAP_ID_PWR	4
+#define PCI_EXT_CAP_ID_ACS	13
 #define PCI_EXT_CAP_ID_ARI	14
 #define PCI_EXT_CAP_ID_ATS	15
 #define PCI_EXT_CAP_ID_SRIOV	16
@@ -662,4 +668,16 @@
 #define  PCI_SRIOV_VFM_MO	0x2	/* Active.MigrateOut */
 #define  PCI_SRIOV_VFM_AV	0x3	/* Active.Available */
 
+/* Access Control Service */
+#define PCI_ACS_CAP		0x04	/* ACS Capability Register */
+#define  PCI_ACS_SV		0x01	/* Source Validation */
+#define  PCI_ACS_TB		0x02	/* Translation Blocking */
+#define  PCI_ACS_RR		0x04	/* P2P Request Redirect */
+#define  PCI_ACS_CR		0x08	/* P2P Completion Redirect */
+#define  PCI_ACS_UF		0x10	/* Upstream Forwarding */
+#define  PCI_ACS_EC		0x20	/* P2P Egress Control */
+#define  PCI_ACS_DT		0x40	/* Direct Translated P2P */
+#define PCI_ACS_CTRL		0x06	/* ACS Control Register */
+#define PCI_ACS_EGRESS_CTL_V	0x08	/* ACS Egress Control Vector */
+
 #endif /* LINUX_PCI_REGS_H */

include/linux/pcieport_if.h

@@ -10,10 +10,7 @@
 #define _PCIEPORT_IF_H_
 
 /* Port Type */
-#define PCIE_RC_PORT			4	/* Root port of RC */
-#define PCIE_SW_UPSTREAM_PORT		5	/* Upstream port of Switch */
-#define PCIE_SW_DOWNSTREAM_PORT		6	/* Downstream port of Switch */
-#define PCIE_ANY_PORT			7
+#define PCIE_ANY_PORT			(~0)
 
 /* Service Type */
 #define PCIE_PORT_SERVICE_PME_SHIFT	0	/* Power Management Event */
@@ -25,17 +22,6 @@
 #define PCIE_PORT_SERVICE_VC_SHIFT	3	/* Virtual Channel */
 #define PCIE_PORT_SERVICE_VC		(1 << PCIE_PORT_SERVICE_VC_SHIFT)
 
-/* Root/Upstream/Downstream Port's Interrupt Mode */
-#define PCIE_PORT_NO_IRQ		(-1)
-#define PCIE_PORT_INTx_MODE		0
-#define PCIE_PORT_MSI_MODE		1
-#define PCIE_PORT_MSIX_MODE		2
-
-struct pcie_port_data {
-	int port_type;		/* Type of the port */
-	int port_irq_mode;	/* [0:INTx | 1:MSI | 2:MSI-X] */
-};
-
 struct pcie_device {
 	int 		irq;	    /* Service IRQ/MSI/MSI-X Vector */
 	struct pci_dev *port;	    /* Root/Upstream/Downstream Port */

include/xen/xen.h

@@ -0,0 +1,32 @@
+#ifndef _XEN_XEN_H
+#define _XEN_XEN_H
+
+enum xen_domain_type {
+	XEN_NATIVE,		/* running on bare hardware    */
+	XEN_PV_DOMAIN,		/* running in a PV domain      */
+	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
+};
+
+#ifdef CONFIG_XEN
+extern enum xen_domain_type xen_domain_type;
+#else
+#define xen_domain_type		XEN_NATIVE
+#endif
+
+#define xen_domain()		(xen_domain_type != XEN_NATIVE)
+#define xen_pv_domain()		(xen_domain() &&			\
+				 xen_domain_type == XEN_PV_DOMAIN)
+#define xen_hvm_domain()	(xen_domain() &&			\
+				 xen_domain_type == XEN_HVM_DOMAIN)
+
+#ifdef CONFIG_XEN_DOM0
+#include <xen/interface/xen.h>
+#include <asm/xen/hypervisor.h>
+
+#define xen_initial_domain()	(xen_pv_domain() && \
+				 xen_start_info->flags & SIF_INITDOMAIN)
+#else  /* !CONFIG_XEN_DOM0 */
+#define xen_initial_domain()	(0)
+#endif	/* CONFIG_XEN_DOM0 */
+
+#endif	/* _XEN_XEN_H */

kernel/resource.c

@@ -308,35 +308,37 @@ static int find_resource(struct resource *root, struct resource *new,
 			 void *alignf_data)
 {
 	struct resource *this = root->child;
+	resource_size_t start, end;
 
-	new->start = root->start;
+	start = root->start;
 	/*
 	 * Skip past an allocated resource that starts at 0, since the assignment
 	 * of this->start - 1 to new->end below would cause an underflow.
 	 */
 	if (this && this->start == 0) {
-		new->start = this->end + 1;
+		start = this->end + 1;
 		this = this->sibling;
 	}
 	for(;;) {
 		if (this)
-			new->end = this->start - 1;
+			end = this->start - 1;
 		else
-			new->end = root->end;
-		if (new->start < min)
-			new->start = min;
-		if (new->end > max)
-			new->end = max;
-		new->start = ALIGN(new->start, align);
+			end = root->end;
+		if (start < min)
+			start = min;
+		if (end > max)
+			end = max;
+		start = ALIGN(start, align);
 		if (alignf)
 			alignf(alignf_data, new, size, align);
-		if (new->start < new->end && new->end - new->start >= size - 1) {
-			new->end = new->start + size - 1;
+		if (start < end && end - start >= size - 1) {
+			new->start = start;
+			new->end = start + size - 1;
 			return 0;
 		}
 		if (!this)
 			break;
-		new->start = this->end + 1;
+		start = this->end + 1;
 		this = this->sibling;
 	}
 	return -EBUSY;

lib/vsprintf.c

@@ -595,37 +595,89 @@ static char *symbol_string(char *buf, char *end, void *ptr,
 }
 
 static char *resource_string(char *buf, char *end, struct resource *res,
-				struct printf_spec spec)
+				struct printf_spec spec, const char *fmt)
 {
 #ifndef IO_RSRC_PRINTK_SIZE
-#define IO_RSRC_PRINTK_SIZE	4
+#define IO_RSRC_PRINTK_SIZE	6
 #endif
 
 #ifndef MEM_RSRC_PRINTK_SIZE
-#define MEM_RSRC_PRINTK_SIZE	8
+#define MEM_RSRC_PRINTK_SIZE	10
 #endif
-	struct printf_spec num_spec = {
+	struct printf_spec hex_spec = {
 		.base = 16,
 		.precision = -1,
 		.flags = SPECIAL | SMALL | ZEROPAD,
 	};
-	/* room for the actual numbers, the two "0x", -, [, ] and the final zero */
-	char sym[4*sizeof(resource_size_t) + 8];
+	struct printf_spec dec_spec = {
+		.base = 10,
+		.precision = -1,
+		.flags = 0,
+	};
+	struct printf_spec str_spec = {
+		.field_width = -1,
+		.precision = 10,
+		.flags = LEFT,
+	};
+	struct printf_spec flag_spec = {
+		.base = 16,
+		.precision = -1,
+		.flags = SPECIAL | SMALL,
+	};
+
+	/* 32-bit res (sizeof==4): 10 chars in dec, 10 in hex ("0x" + 8)
+	 * 64-bit res (sizeof==8): 20 chars in dec, 18 in hex ("0x" + 16) */
+#define RSRC_BUF_SIZE		((2 * sizeof(resource_size_t)) + 4)
+#define FLAG_BUF_SIZE		(2 * sizeof(res->flags))
+#define DECODED_BUF_SIZE	sizeof("[mem - 64bit pref disabled]")
+#define RAW_BUF_SIZE		sizeof("[mem - flags 0x]")
+	char sym[max(2*RSRC_BUF_SIZE + DECODED_BUF_SIZE,
+		     2*RSRC_BUF_SIZE + FLAG_BUF_SIZE + RAW_BUF_SIZE)];
+
 	char *p = sym, *pend = sym + sizeof(sym);
-	int size = -1;
+	int size = -1, addr = 0;
+	int decode = (fmt[0] == 'R') ? 1 : 0;
 
-	if (res->flags & IORESOURCE_IO)
+	if (res->flags & IORESOURCE_IO) {
 		size = IO_RSRC_PRINTK_SIZE;
-	else if (res->flags & IORESOURCE_MEM)
+		addr = 1;
+	} else if (res->flags & IORESOURCE_MEM) {
 		size = MEM_RSRC_PRINTK_SIZE;
+		addr = 1;
+	}
 
 	*p++ = '[';
-	num_spec.field_width = size;
-	p = number(p, pend, res->start, num_spec);
-	*p++ = '-';
-	p = number(p, pend, res->end, num_spec);
+	if (res->flags & IORESOURCE_IO)
+		p = string(p, pend, "io  ", str_spec);
+	else if (res->flags & IORESOURCE_MEM)
+		p = string(p, pend, "mem ", str_spec);
+	else if (res->flags & IORESOURCE_IRQ)
+		p = string(p, pend, "irq ", str_spec);
+	else if (res->flags & IORESOURCE_DMA)
+		p = string(p, pend, "dma ", str_spec);
+	else {
+		p = string(p, pend, "??? ", str_spec);
+		decode = 0;
+	}
+	hex_spec.field_width = size;
+	p = number(p, pend, res->start, addr ? hex_spec : dec_spec);
+	if (res->start != res->end) {
+		*p++ = '-';
+		p = number(p, pend, res->end, addr ? hex_spec : dec_spec);
+	}
+	if (decode) {
+		if (res->flags & IORESOURCE_MEM_64)
+			p = string(p, pend, " 64bit", str_spec);
+		if (res->flags & IORESOURCE_PREFETCH)
+			p = string(p, pend, " pref", str_spec);
+		if (res->flags & IORESOURCE_DISABLED)
+			p = string(p, pend, " disabled", str_spec);
+	} else {
+		p = string(p, pend, " flags ", str_spec);
+		p = number(p, pend, res->flags, flag_spec);
+	}
 	*p++ = ']';
-	*p = 0;
+	*p = '\0';
 
 	return string(buf, end, sym, spec);
 }
@@ -801,8 +853,8 @@ static char *ip4_addr_string(char *buf, char *end, const u8 *addr,
  * - 'f' For simple symbolic function names without offset
  * - 'S' For symbolic direct pointers with offset
  * - 's' For symbolic direct pointers without offset
- * - 'R' For a struct resource pointer, it prints the range of
- *       addresses (not the name nor the flags)
+ * - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref]
+ * - 'r' For raw struct resource, e.g., [mem 0x0-0x1f flags 0x201]
  * - 'M' For a 6-byte MAC address, it prints the address in the
  *       usual colon-separated hex notation
  * - 'm' For a 6-byte MAC address, it prints the hex address without colons
@@ -833,7 +885,8 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 	case 'S':
 		return symbol_string(buf, end, ptr, spec, *fmt);
 	case 'R':
-		return resource_string(buf, end, ptr, spec);
+	case 'r':
+		return resource_string(buf, end, ptr, spec, fmt);
 	case 'M':			/* Colon separated: 00:01:02:03:04:05 */
 	case 'm':			/* Contiguous: 000102030405 */
 		return mac_address_string(buf, end, ptr, spec, fmt);