Merge tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Enumeration
   - Increment max correctly in pci_scan_bridge() (Andreas Noever)
   - Clarify the "scan anyway" comment in pci_scan_bridge() (Andreas Noever)
   - Assign CardBus bus number only during the second pass (Andreas Noever)
   - Use request_resource_conflict() instead of insert_ for bus numbers (Andreas Noever)
   - Make sure bus number resources stay within their parents bounds (Andreas Noever)
   - Remove pci_fixup_parent_subordinate_busnr() (Andreas Noever)
   - Check for child busses which use more bus numbers than allocated (Andreas Noever)
   - Don't scan random busses in pci_scan_bridge() (Andreas Noever)
   - x86: Drop pcibios_scan_root() check for bus already scanned (Bjorn Helgaas)
   - x86: Use pcibios_scan_root() instead of pci_scan_bus_with_sysdata() (Bjorn Helgaas)
   - x86: Use pcibios_scan_root() instead of pci_scan_bus_on_node() (Bjorn Helgaas)
   - x86: Merge pci_scan_bus_on_node() into pcibios_scan_root() (Bjorn Helgaas)
   - x86: Drop return value of pcibios_scan_root() (Bjorn Helgaas)

  NUMA
   - x86: Add x86_pci_root_bus_node() to look up NUMA node from PCI bus (Bjorn Helgaas)
   - x86: Use x86_pci_root_bus_node() instead of get_mp_bus_to_node() (Bjorn Helgaas)
   - x86: Remove mp_bus_to_node[], set_mp_bus_to_node(), get_mp_bus_to_node() (Bjorn Helgaas)
   - x86: Use NUMA_NO_NODE, not -1, for unknown node (Bjorn Helgaas)
   - x86: Remove acpi_get_pxm() usage (Bjorn Helgaas)
   - ia64: Use NUMA_NO_NODE, not MAX_NUMNODES, for unknown node (Bjorn Helgaas)
   - ia64: Remove acpi_get_pxm() usage (Bjorn Helgaas)
   - ACPI: Fix acpi_get_node() prototype (Bjorn Helgaas)

  Resource management
   - i2o: Fix and refactor PCI space allocation (Bjorn Helgaas)
   - Add resource_contains() (Bjorn Helgaas)
   - Add %pR support for IORESOURCE_UNSET (Bjorn Helgaas)
   - Mark resources as IORESOURCE_UNSET if we can't assign them (Bjorn Helgaas)
   - Don't clear IORESOURCE_UNSET when updating BAR (Bjorn Helgaas)
   - Check IORESOURCE_UNSET before updating BAR (Bjorn Helgaas)
   - Don't try to claim IORESOURCE_UNSET resources (Bjorn Helgaas)
   - Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit (Bjorn Helgaas)
   - Don't enable decoding if BAR hasn't been assigned an address (Bjorn Helgaas)
   - Add "weak" generic pcibios_enable_device() implementation (Bjorn Helgaas)
   - alpha, microblaze, sh, sparc, tile: Use default pcibios_enable_device() (Bjorn Helgaas)
   - s390: Use generic pci_enable_resources() (Bjorn Helgaas)
   - Don't check resource_size() in pci_bus_alloc_resource() (Bjorn Helgaas)
   - Set type in __request_region() (Bjorn Helgaas)
   - Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region() (Bjorn Helgaas)
   - Change pci_bus_alloc_resource() type_mask to unsigned long (Bjorn Helgaas)
   - Log IDE resource quirk in dmesg (Bjorn Helgaas)
   - Revert "[PATCH] Insert GART region into resource map" (Bjorn Helgaas)

  PCI device hotplug
   - Make check_link_active() non-static (Rajat Jain)
   - Use link change notifications for hot-plug and removal (Rajat Jain)
   - Enable link state change notifications (Rajat Jain)
   - Don't disable the link permanently during removal (Rajat Jain)
   - Don't check adapter or latch status while disabling (Rajat Jain)
   - Disable link notification across slot reset (Rajat Jain)
   - Ensure very fast hotplug events are also processed (Rajat Jain)
   - Add hotplug_lock to serialize hotplug events (Rajat Jain)
   - Remove a non-existent card, regardless of "surprise" capability (Rajat Jain)
   - Don't turn slot off when hot-added device already exists (Yijing Wang)

  MSI
   - Keep pci_enable_msi() documentation (Alexander Gordeev)
   - ahci: Fix broken single MSI fallback (Alexander Gordeev)
   - ahci, vfio: Use pci_enable_msi_range() (Alexander Gordeev)
   - Check kmalloc() return value, fix leak of name (Greg Kroah-Hartman)
   - Fix leak of msi_attrs (Greg Kroah-Hartman)
   - Fix pci_msix_vec_count() htmldocs failure (Masanari Iida)

  Virtualization
   - Device-specific ACS support (Alex Williamson)

  Freescale i.MX6
   - Wait for retraining (Marek Vasut)

  Marvell MVEBU
   - Use Device ID and revision from underlying endpoint (Andrew Lunn)
   - Fix incorrect size for PCI aperture resources (Jason Gunthorpe)
   - Call request_resource() on the apertures (Jason Gunthorpe)
   - Fix potential issue in range parsing (Jean-Jacques Hiblot)

  Renesas R-Car
   - Check platform_get_irq() return code (Ben Dooks)
   - Add error interrupt handling (Ben Dooks)
   - Fix bridge logic configuration accesses (Ben Dooks)
   - Register each instance independently (Magnus Damm)
   - Break out window size handling (Magnus Damm)
   - Make the Kconfig dependencies more generic (Magnus Damm)

  Synopsys DesignWare
   - Fix RC BAR to be single 64-bit non-prefetchable memory (Mohit Kumar)

  Miscellaneous
   - Remove unused SR-IOV VF Migration support (Bjorn Helgaas)
   - Enable INTx if BIOS left them disabled (Bjorn Helgaas)
   - Fix hex vs decimal typo in cpqhpc_probe() (Dan Carpenter)
   - Clean up par-arch object file list (Liviu Dudau)
   - Set IORESOURCE_ROM_SHADOW only for the default VGA device (Sander Eikelenboom)
   - ACPI, ARM, drm, powerpc, pcmcia, PCI: Use list_for_each_entry() for bus traversal (Yijing Wang)
   - Fix pci_bus_b() build failure (Paul Gortmaker)"

* tag 'pci-v3.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (108 commits)
  Revert "[PATCH] Insert GART region into resource map"
  PCI: Log IDE resource quirk in dmesg
  PCI: Change pci_bus_alloc_resource() type_mask to unsigned long
  PCI: Check all IORESOURCE_TYPE_BITS in pci_bus_alloc_from_region()
  resources: Set type in __request_region()
  PCI: Don't check resource_size() in pci_bus_alloc_resource()
  s390/PCI: Use generic pci_enable_resources()
  tile PCI RC: Use default pcibios_enable_device()
  sparc/PCI: Use default pcibios_enable_device() (Leon only)
  sh/PCI: Use default pcibios_enable_device()
  microblaze/PCI: Use default pcibios_enable_device()
  alpha/PCI: Use default pcibios_enable_device()
  PCI: Add "weak" generic pcibios_enable_device() implementation
  PCI: Don't enable decoding if BAR hasn't been assigned an address
  PCI: Enable INTx in pci_reenable_device() only when MSI/MSI-X not enabled
  PCI: Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit
  PCI: Don't try to claim IORESOURCE_UNSET resources
  PCI: Check IORESOURCE_UNSET before updating BAR
  PCI: Don't clear IORESOURCE_UNSET when updating BAR
  PCI: Mark resources as IORESOURCE_UNSET if we can't assign them
  ...

Conflicts:
	arch/x86/include/asm/topology.h
	drivers/ata/ahci.c

35 files changed, 802 insertions, 500 deletions

diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 9e6816ef280a..24b5476449a1 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -60,7 +60,7 @@ int node_to_pxm(int node)
 	return node_to_pxm_map[node];
 }
 
-void __acpi_map_pxm_to_node(int pxm, int node)
+static void __acpi_map_pxm_to_node(int pxm, int node)
 {
 	if (pxm_to_node_map[pxm] == NUMA_NO_NODE || node < pxm_to_node_map[pxm])
 		pxm_to_node_map[pxm] = node;
@@ -193,7 +193,7 @@ static int __init acpi_parse_slit(struct acpi_table_header *table)
 	return 0;
 }
 
-void __init __attribute__ ((weak))
+void __init __weak
 acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
 {
 	printk(KERN_WARNING PREFIX
@@ -314,7 +314,7 @@ int __init acpi_numa_init(void)
 	return 0;
 }
 
-int acpi_get_pxm(acpi_handle h)
+static int acpi_get_pxm(acpi_handle h)
 {
 	unsigned long long pxm;
 	acpi_status status;
@@ -331,14 +331,14 @@ int acpi_get_pxm(acpi_handle h)
 	return -1;
 }
 
-int acpi_get_node(acpi_handle *handle)
+int acpi_get_node(acpi_handle handle)
 {
-	int pxm, node = NUMA_NO_NODE;
+	int pxm;
 
 	pxm = acpi_get_pxm(handle);
-	if (pxm >= 0 && pxm < MAX_PXM_DOMAINS)
-		node = acpi_map_pxm_to_node(pxm);
+	if (pxm < 0 || pxm >= MAX_PXM_DOMAINS)
+		return NUMA_NO_NODE;
 
-	return node;
+	return acpi_map_pxm_to_node(pxm);
 }
 EXPORT_SYMBOL(acpi_get_node);
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index a52a5b662f35..5a0bf8ed649b 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1166,13 +1166,13 @@ static inline void ahci_gtf_filter_workaround(struct ata_host *host)
 static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports,
 			 struct ahci_host_priv *hpriv)
 {
-	int rc, nvec;
+	int nvec;
 
 	if (hpriv->flags & AHCI_HFLAG_NO_MSI)
 		goto intx;
 
-	rc = pci_msi_vec_count(pdev);
-	if (rc < 0)
+	nvec = pci_msi_vec_count(pdev);
+	if (nvec < 0)
 		goto intx;
 
 	/*
@@ -1180,21 +1180,19 @@ static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports,
 	 * Message mode could be enforced. In this case assume that advantage
 	 * of multipe MSIs is negated and use single MSI mode instead.
 	 */
-	if (rc < n_ports)
+	if (nvec < n_ports)
 		goto single_msi;
 
-	nvec = rc;
-	rc = pci_enable_msi_block(pdev, nvec);
-	if (rc < 0)
-		goto intx;
-	else if (rc > 0)
+	nvec = pci_enable_msi_range(pdev, nvec, nvec);
+	if (nvec == -ENOSPC)
 		goto single_msi;
+	else if (nvec < 0)
+		goto intx;
 
 	return nvec;
 
 single_msi:
-	rc = pci_enable_msi(pdev);
-	if (rc)
+	if (pci_enable_msi(pdev))
 		goto intx;
 	return 1;
 
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 725c46162bbd..2ac754e18bcf 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -870,14 +870,14 @@ static void __init mvebu_mbus_get_pcie_resources(struct device_node *np,
 	ret = of_property_read_u32_array(np, "pcie-mem-aperture", reg, ARRAY_SIZE(reg));
 	if (!ret) {
 		mem->start = reg[0];
-		mem->end = mem->start + reg[1];
+		mem->end = mem->start + reg[1] - 1;
 		mem->flags = IORESOURCE_MEM;
 	}
 
 	ret = of_property_read_u32_array(np, "pcie-io-aperture", reg, ARRAY_SIZE(reg));
 	if (!ret) {
 		io->start = reg[0];
-		io->end = io->start + reg[1];
+		io->end = io->start + reg[1] - 1;
 		io->flags = IORESOURCE_IO;
 	}
 }
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 7f2af9aca038..309023f12d7f 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -319,7 +319,8 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
 			pci_dev_put(pci_dev);
 		}
 		if (!dev->hose) {
-			struct pci_bus *b = pci_bus_b(pci_root_buses.next);
+			struct pci_bus *b = list_entry(pci_root_buses.next,
+				struct pci_bus, node);
 			if (b)
 				dev->hose = b->sysdata;
 		}
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h
index e400fbe411de..cff039df056e 100644
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@ -25,6 +25,7 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/pci.h>
+#include <linux/irqreturn.h>
 
 /*
  * Maximum number of IOMMUs supported
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
index a8c08f332da0..92752fb5b2d3 100644
--- a/drivers/message/i2o/iop.c
+++ b/drivers/message/i2o/iop.c
@@ -652,6 +652,44 @@ static int i2o_iop_activate(struct i2o_controller *c)
 	return i2o_hrt_get(c);
 };
 
+static void i2o_res_alloc(struct i2o_controller *c, unsigned long flags)
+{
+	i2o_status_block *sb = c->status_block.virt;
+	struct resource *res = &c->mem_resource;
+	resource_size_t size, align;
+	int err;
+
+	res->name = c->pdev->bus->name;
+	res->flags = flags;
+	res->start = 0;
+	res->end = 0;
+	osm_info("%s: requires private memory resources.\n", c->name);
+
+	if (flags & IORESOURCE_MEM) {
+		size = sb->desired_mem_size;
+		align = 1 << 20;	/* unspecified, use 1Mb and play safe */
+	} else {
+		size = sb->desired_io_size;
+		align = 1 << 12;	/* unspecified, use 4Kb and play safe */
+	}
+
+	err = pci_bus_alloc_resource(c->pdev->bus, res, size, align, 0, 0,
+				     NULL, NULL);
+	if (err < 0)
+		return;
+
+	if (flags & IORESOURCE_MEM) {
+		c->mem_alloc = 1;
+		sb->current_mem_size = resource_size(res);
+		sb->current_mem_base = res->start;
+	} else if (flags & IORESOURCE_IO) {
+		c->io_alloc = 1;
+		sb->current_io_size = resource_size(res);
+		sb->current_io_base = res->start;
+	}
+	osm_info("%s: allocated PCI space %pR\n", c->name, res);
+}
+
 /**
  *	i2o_iop_systab_set - Set the I2O System Table of the specified IOP
  *	@c: I2O controller to which the system table should be send
@@ -665,52 +703,13 @@ static int i2o_iop_systab_set(struct i2o_controller *c)
 	struct i2o_message *msg;
 	i2o_status_block *sb = c->status_block.virt;
 	struct device *dev = &c->pdev->dev;
-	struct resource *root;
 	int rc;
 
-	if (sb->current_mem_size < sb->desired_mem_size) {
-		struct resource *res = &c->mem_resource;
-		res->name = c->pdev->bus->name;
-		res->flags = IORESOURCE_MEM;
-		res->start = 0;
-		res->end = 0;
-		osm_info("%s: requires private memory resources.\n", c->name);
-		root = pci_find_parent_resource(c->pdev, res);
-		if (root == NULL)
-			osm_warn("%s: Can't find parent resource!\n", c->name);
-		if (root && allocate_resource(root, res, sb->desired_mem_size, sb->desired_mem_size, sb->desired_mem_size, 1 << 20,	/* Unspecified, so use 1Mb and play safe */
-					      NULL, NULL) >= 0) {
-			c->mem_alloc = 1;
-			sb->current_mem_size = resource_size(res);
-			sb->current_mem_base = res->start;
-			osm_info("%s: allocated %llu bytes of PCI memory at "
-				"0x%016llX.\n", c->name,
-				(unsigned long long)resource_size(res),
-				(unsigned long long)res->start);
-		}
-	}
+	if (sb->current_mem_size < sb->desired_mem_size)
+		i2o_res_alloc(c, IORESOURCE_MEM);
 
-	if (sb->current_io_size < sb->desired_io_size) {
-		struct resource *res = &c->io_resource;
-		res->name = c->pdev->bus->name;
-		res->flags = IORESOURCE_IO;
-		res->start = 0;
-		res->end = 0;
-		osm_info("%s: requires private memory resources.\n", c->name);
-		root = pci_find_parent_resource(c->pdev, res);
-		if (root == NULL)
-			osm_warn("%s: Can't find parent resource!\n", c->name);
-		if (root && allocate_resource(root, res, sb->desired_io_size, sb->desired_io_size, sb->desired_io_size, 1 << 20,	/* Unspecified, so use 1Mb and play safe */
-					      NULL, NULL) >= 0) {
-			c->io_alloc = 1;
-			sb->current_io_size = resource_size(res);
-			sb->current_mem_base = res->start;
-			osm_info("%s: allocated %llu bytes of PCI I/O at "
-				"0x%016llX.\n", c->name,
-				(unsigned long long)resource_size(res),
-				(unsigned long long)res->start);
-		}
-	}
+	if (sb->current_io_size < sb->desired_io_size)
+		i2o_res_alloc(c, IORESOURCE_IO);
 
 	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
 	if (IS_ERR(msg))
diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h
index 80bd829fbd9a..893d5119fa9b 100644
--- a/drivers/misc/mei/hw-me.h
+++ b/drivers/misc/mei/hw-me.h
@@ -20,6 +20,7 @@
 #define _MEI_INTERFACE_H_
 
 #include <linux/mei.h>
+#include <linux/irqreturn.h>
 #include "mei_dev.h"
 #include "client.h"
 
diff --git a/drivers/misc/mic/card/mic_device.h b/drivers/misc/mic/card/mic_device.h
index 347b9b3b7916..306f502be95e 100644
--- a/drivers/misc/mic/card/mic_device.h
+++ b/drivers/misc/mic/card/mic_device.h
@@ -29,6 +29,7 @@
 
 #include <linux/workqueue.h>
 #include <linux/io.h>
+#include <linux/irqreturn.h>
 
 /**
  * struct mic_intr_info - Contains h/w specific interrupt sources info
diff --git a/drivers/misc/mic/host/mic_device.h b/drivers/misc/mic/host/mic_device.h
index 1a6edce2ecde..0398c696d257 100644
--- a/drivers/misc/mic/host/mic_device.h
+++ b/drivers/misc/mic/host/mic_device.h
@@ -24,6 +24,7 @@
 #include <linux/cdev.h>
 #include <linux/idr.h>
 #include <linux/notifier.h>
+#include <linux/irqreturn.h>
 
 #include "mic_intr.h"
 
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 17d2b07ee67c..e2501ac6fe84 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -33,21 +33,15 @@ obj-$(CONFIG_PCI_IOV) += iov.o
 #
 # Some architectures use the generic PCI setup functions
 #
-obj-$(CONFIG_X86) += setup-bus.o
-obj-$(CONFIG_ALPHA) += setup-bus.o setup-irq.o
-obj-$(CONFIG_ARM) += setup-bus.o setup-irq.o
-obj-$(CONFIG_UNICORE32) += setup-bus.o setup-irq.o
-obj-$(CONFIG_PARISC) += setup-bus.o
-obj-$(CONFIG_SUPERH) += setup-bus.o setup-irq.o
-obj-$(CONFIG_PPC) += setup-bus.o
-obj-$(CONFIG_FRV) += setup-bus.o
-obj-$(CONFIG_MIPS) += setup-bus.o setup-irq.o
+obj-$(CONFIG_ALPHA) += setup-irq.o
+obj-$(CONFIG_ARM) += setup-irq.o
+obj-$(CONFIG_UNICORE32) += setup-irq.o
+obj-$(CONFIG_SUPERH) += setup-irq.o
+obj-$(CONFIG_MIPS) += setup-irq.o
 obj-$(CONFIG_X86_VISWS) += setup-irq.o
-obj-$(CONFIG_MN10300) += setup-bus.o
-obj-$(CONFIG_MICROBLAZE) += setup-bus.o
-obj-$(CONFIG_TILE) += setup-bus.o setup-irq.o
-obj-$(CONFIG_SPARC_LEON) += setup-bus.o setup-irq.o
-obj-$(CONFIG_M68K) += setup-bus.o setup-irq.o
+obj-$(CONFIG_TILE) += setup-irq.o
+obj-$(CONFIG_SPARC_LEON) += setup-irq.o
+obj-$(CONFIG_M68K) += setup-irq.o
 
 #
 # ACPI Related PCI FW Functions
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 38901665c770..fb8aed307c28 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -132,7 +132,7 @@ static void pci_clip_resource_to_region(struct pci_bus *bus,
 
 static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
 		resource_size_t size, resource_size_t align,
-		resource_size_t min, unsigned int type_mask,
+		resource_size_t min, unsigned long type_mask,
 		resource_size_t (*alignf)(void *,
 					  const struct resource *,
 					  resource_size_t,
@@ -144,7 +144,7 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
 	struct resource *r, avail;
 	resource_size_t max;
 
-	type_mask |= IORESOURCE_IO | IORESOURCE_MEM;
+	type_mask |= IORESOURCE_TYPE_BITS;
 
 	pci_bus_for_each_resource(bus, r, i) {
 		if (!r)
@@ -200,7 +200,7 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
  */
 int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
 		resource_size_t size, resource_size_t align,
-		resource_size_t min, unsigned int type_mask,
+		resource_size_t min, unsigned long type_mask,
 		resource_size_t (*alignf)(void *,
 					  const struct resource *,
 					  resource_size_t,
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index 06ace6248c61..47aaf22d814e 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -32,11 +32,6 @@ void pci_set_host_bridge_release(struct pci_host_bridge *bridge,
 	bridge->release_data = release_data;
 }
 
-static bool resource_contains(struct resource *res1, struct resource *res2)
-{
-	return res1->start <= res2->start && res1->end >= res2->end;
-}
-
 void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
 			     struct resource *res)
 {
@@ -45,9 +40,6 @@ void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
 	resource_size_t offset = 0;
 
 	list_for_each_entry(window, &bridge->windows, list) {
-		if (resource_type(res) != resource_type(window->res))
-			continue;
-
 		if (resource_contains(window->res, res)) {
 			offset = window->offset;
 			break;
diff --git a/drivers/pci/host/Kconfig b/drivers/pci/host/Kconfig
index 47d46c6d8468..a6f67ec8882f 100644
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/host/Kconfig
@@ -27,7 +27,7 @@ config PCI_TEGRA
 
 config PCI_RCAR_GEN2
 	bool "Renesas R-Car Gen2 Internal PCI controller"
-	depends on ARM && (ARCH_R8A7790 || ARCH_R8A7791 || COMPILE_TEST)
+	depends on ARCH_SHMOBILE || (ARM && COMPILE_TEST)
 	help
 	  Say Y here if you want internal PCI support on R-Car Gen2 SoC.
 	  There are 3 internal PCI controllers available with a single
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c
index e8663a8c3406..ee082509b0ba 100644
--- a/drivers/pci/host/pci-imx6.c
+++ b/drivers/pci/host/pci-imx6.c
@@ -424,20 +424,40 @@ static void imx6_pcie_reset_phy(struct pcie_port *pp)
 
 static int imx6_pcie_link_up(struct pcie_port *pp)
 {
-	u32 rc, ltssm, rx_valid;
+	u32 rc, debug_r0, rx_valid;
+	int count = 5;
 
 	/*
-	 * Test if the PHY reports that the link is up and also that
-	 * the link training finished.  It might happen that the PHY
-	 * reports the link is already up, but the link training bit
-	 * is still set, so make sure to check the training is done
-	 * as well here.
+	 * Test if the PHY reports that the link is up and also that the LTSSM
+	 * training finished. There are three possible states of the link when
+	 * this code is called:
+	 * 1) The link is DOWN (unlikely)
+	 *     The link didn't come up yet for some reason. This usually means
+	 *     we have a real problem somewhere. Reset the PHY and exit. This
+	 *     state calls for inspection of the DEBUG registers.
+	 * 2) The link is UP, but still in LTSSM training
+	 *     Wait for the training to finish, which should take a very short
+	 *     time. If the training does not finish, we have a problem and we
+	 *     need to inspect the DEBUG registers. If the training does finish,
+	 *     the link is up and operating correctly.
+	 * 3) The link is UP and no longer in LTSSM training
+	 *     The link is up and operating correctly.
 	 */
-	rc = readl(pp->dbi_base + PCIE_PHY_DEBUG_R1);
-	if ((rc & PCIE_PHY_DEBUG_R1_XMLH_LINK_UP) &&
-	    !(rc & PCIE_PHY_DEBUG_R1_XMLH_LINK_IN_TRAINING))
-		return 1;
-
+	while (1) {
+		rc = readl(pp->dbi_base + PCIE_PHY_DEBUG_R1);
+		if (!(rc & PCIE_PHY_DEBUG_R1_XMLH_LINK_UP))
+			break;
+		if (!(rc & PCIE_PHY_DEBUG_R1_XMLH_LINK_IN_TRAINING))
+			return 1;
+		if (!count--)
+			break;
+		dev_dbg(pp->dev, "Link is up, but still in training\n");
+		/*
+		 * Wait a little bit, then re-check if the link finished
+		 * the training.
+		 */
+		usleep_range(1000, 2000);
+	}
 	/*
 	 * From L0, initiate MAC entry to gen2 if EP/RC supports gen2.
 	 * Wait 2ms (LTSSM timeout is 24ms, PHY lock is ~5us in gen2).
@@ -446,15 +466,16 @@ static int imx6_pcie_link_up(struct pcie_port *pp)
 	 * to gen2 is stuck
 	 */
 	pcie_phy_read(pp->dbi_base, PCIE_PHY_RX_ASIC_OUT, &rx_valid);
-	ltssm = readl(pp->dbi_base + PCIE_PHY_DEBUG_R0) & 0x3F;
+	debug_r0 = readl(pp->dbi_base + PCIE_PHY_DEBUG_R0);
 
 	if (rx_valid & 0x01)
 		return 0;
 
-	if (ltssm != 0x0d)
+	if ((debug_r0 & 0x3f) != 0x0d)
 		return 0;
 
 	dev_err(pp->dev, "transition to gen2 is stuck, reset PHY!\n");
+	dev_dbg(pp->dev, "debug_r0=%08x debug_r1=%08x\n", debug_r0, rc);
 
 	imx6_pcie_reset_phy(pp);
 
diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index 0e79665afd44..d3d1cfd51e09 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -101,7 +101,9 @@ struct mvebu_pcie {
 	struct mvebu_pcie_port *ports;
 	struct msi_chip *msi;
 	struct resource io;
+	char io_name[30];
 	struct resource realio;
+	char mem_name[30];
 	struct resource mem;
 	struct resource busn;
 	int nports;
@@ -672,10 +674,30 @@ static int mvebu_pcie_setup(int nr, struct pci_sys_data *sys)
 {
 	struct mvebu_pcie *pcie = sys_to_pcie(sys);
 	int i;
+	int domain = 0;
 
-	if (resource_size(&pcie->realio) != 0)
+#ifdef CONFIG_PCI_DOMAINS
+	domain = sys->domain;
+#endif
+
+	snprintf(pcie->mem_name, sizeof(pcie->mem_name), "PCI MEM %04x",
+		 domain);
+	pcie->mem.name = pcie->mem_name;
+
+	snprintf(pcie->io_name, sizeof(pcie->io_name), "PCI I/O %04x", domain);
+	pcie->realio.name = pcie->io_name;
+
+	if (request_resource(&iomem_resource, &pcie->mem))
+		return 0;
+
+	if (resource_size(&pcie->realio) != 0) {
+		if (request_resource(&ioport_resource, &pcie->realio)) {
+			release_resource(&pcie->mem);
+			return 0;
+		}
 		pci_add_resource_offset(&sys->resources, &pcie->realio,
 					sys->io_offset);
+	}
 	pci_add_resource_offset(&sys->resources, &pcie->mem, sys->mem_offset);
 	pci_add_resource(&sys->resources, &pcie->busn);
 
@@ -797,7 +819,7 @@ static int mvebu_get_tgt_attr(struct device_node *np, int devfn,
 
 	for (i = 0; i < nranges; i++) {
 		u32 flags = of_read_number(range, 1);
-		u32 slot = of_read_number(range, 2);
+		u32 slot = of_read_number(range + 1, 1);
 		u64 cpuaddr = of_read_number(range + na, pna);
 		unsigned long rtype;
 
diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c
index ceec147baec3..fd3e3ab56509 100644
--- a/drivers/pci/host/pci-rcar-gen2.c
+++ b/drivers/pci/host/pci-rcar-gen2.c
@@ -18,6 +18,7 @@
 #include <linux/pci.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/sizes.h>
 #include <linux/slab.h>
 
 /* AHB-PCI Bridge PCI communication registers */
@@ -39,9 +40,26 @@
 
 #define RCAR_PCI_INT_ENABLE_REG		(RCAR_AHBPCI_PCICOM_OFFSET + 0x20)
 #define RCAR_PCI_INT_STATUS_REG		(RCAR_AHBPCI_PCICOM_OFFSET + 0x24)
+#define RCAR_PCI_INT_SIGTABORT		(1 << 0)
+#define RCAR_PCI_INT_SIGRETABORT	(1 << 1)
+#define RCAR_PCI_INT_REMABORT		(1 << 2)
+#define RCAR_PCI_INT_PERR		(1 << 3)
+#define RCAR_PCI_INT_SIGSERR		(1 << 4)
+#define RCAR_PCI_INT_RESERR		(1 << 5)
+#define RCAR_PCI_INT_WIN1ERR		(1 << 12)
+#define RCAR_PCI_INT_WIN2ERR		(1 << 13)
 #define RCAR_PCI_INT_A			(1 << 16)
 #define RCAR_PCI_INT_B			(1 << 17)
 #define RCAR_PCI_INT_PME		(1 << 19)
+#define RCAR_PCI_INT_ALLERRORS (RCAR_PCI_INT_SIGTABORT		| \
+				RCAR_PCI_INT_SIGRETABORT	| \
+				RCAR_PCI_INT_SIGRETABORT	| \
+				RCAR_PCI_INT_REMABORT		| \
+				RCAR_PCI_INT_PERR		| \
+				RCAR_PCI_INT_SIGSERR		| \
+				RCAR_PCI_INT_RESERR		| \
+				RCAR_PCI_INT_WIN1ERR		| \
+				RCAR_PCI_INT_WIN2ERR)
 
 #define RCAR_AHB_BUS_CTR_REG		(RCAR_AHBPCI_PCICOM_OFFSET + 0x30)
 #define RCAR_AHB_BUS_MMODE_HTRANS	(1 << 0)
@@ -74,9 +92,6 @@
 
 #define RCAR_PCI_UNIT_REV_REG		(RCAR_AHBPCI_PCICOM_OFFSET + 0x48)
 
-/* Number of internal PCI controllers */
-#define RCAR_PCI_NR_CONTROLLERS		3
-
 struct rcar_pci_priv {
 	struct device *dev;
 	void __iomem *reg;
@@ -84,6 +99,7 @@ struct rcar_pci_priv {
 	struct resource mem_res;
 	struct resource *cfg_res;
 	int irq;
+	unsigned long window_size;
 };
 
 /* PCI configuration space operations */
@@ -102,6 +118,10 @@ static void __iomem *rcar_pci_cfg_base(struct pci_bus *bus, unsigned int devfn,
 	if (slot > 2)
 		return NULL;
 
+	/* bridge logic only has registers to 0x40 */
+	if (slot == 0x0 && where >= 0x40)
+		return NULL;
+
 	val = slot ? RCAR_AHBPCI_WIN1_DEVICE | RCAR_AHBPCI_WIN_CTR_CFG :
 		     RCAR_AHBPCI_WIN1_HOST | RCAR_AHBPCI_WIN_CTR_CFG;
 
@@ -156,7 +176,7 @@ static int rcar_pci_write_config(struct pci_bus *bus, unsigned int devfn,
 }
 
 /* PCI interrupt mapping */
-static int __init rcar_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+static int rcar_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct pci_sys_data *sys = dev->bus->sysdata;
 	struct rcar_pci_priv *priv = sys->private_data;
@@ -164,8 +184,48 @@ static int __init rcar_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 	return priv->irq;
 }
 
+#ifdef CONFIG_PCI_DEBUG
+/* if debug enabled, then attach an error handler irq to the bridge */
+
+static irqreturn_t rcar_pci_err_irq(int irq, void *pw)
+{
+	struct rcar_pci_priv *priv = pw;
+	u32 status = ioread32(priv->reg + RCAR_PCI_INT_STATUS_REG);
+
+	if (status & RCAR_PCI_INT_ALLERRORS) {
+		dev_err(priv->dev, "error irq: status %08x\n", status);
+
+		/* clear the error(s) */
+		iowrite32(status & RCAR_PCI_INT_ALLERRORS,
+			  priv->reg + RCAR_PCI_INT_STATUS_REG);
+		return IRQ_HANDLED;
+	}
+
+	return IRQ_NONE;
+}
+
+static void rcar_pci_setup_errirq(struct rcar_pci_priv *priv)
+{
+	int ret;
+	u32 val;
+
+	ret = devm_request_irq(priv->dev, priv->irq, rcar_pci_err_irq,
+			       IRQF_SHARED, "error irq", priv);
+	if (ret) {
+		dev_err(priv->dev, "cannot claim IRQ for error handling\n");
+		return;
+	}
+
+	val = ioread32(priv->reg + RCAR_PCI_INT_ENABLE_REG);
+	val |= RCAR_PCI_INT_ALLERRORS;
+	iowrite32(val, priv->reg + RCAR_PCI_INT_ENABLE_REG);
+}
+#else
+static inline void rcar_pci_setup_errirq(struct rcar_pci_pri