summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt3
-rw-r--r--arch/alpha/kernel/pci.c7
-rw-r--r--arch/frv/mb93090-mb00/pci-vdk.c2
-rw-r--r--arch/ia64/pci/pci.c5
-rw-r--r--arch/microblaze/pci/pci-common.c9
-rw-r--r--arch/mips/pci/pci.c6
-rw-r--r--arch/mn10300/unit-asb2305/pci.c1
-rw-r--r--arch/powerpc/kernel/pci-common.c8
-rw-r--r--arch/x86/pci/common.c1
-rw-r--r--arch/xtensa/kernel/pci.c4
-rw-r--r--drivers/parisc/dino.c3
-rw-r--r--drivers/parisc/lba_pci.c1
-rw-r--r--drivers/pci/access.c27
-rw-r--r--drivers/pci/bus.c2
-rw-r--r--drivers/pci/host/pci-rcar-gen2.c1
-rw-r--r--drivers/pci/probe.c23
-rw-r--r--drivers/pci/quirks.c20
17 files changed, 80 insertions, 43 deletions
diff --git a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
index d8ef5bf50f11..7fab84b33531 100644
--- a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
+++ b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
@@ -7,7 +7,8 @@ OHCI and EHCI controllers.
Required properties:
- compatible: "renesas,pci-r8a7790" for the R8A7790 SoC;
- "renesas,pci-r8a7791" for the R8A7791 SoC.
+ "renesas,pci-r8a7791" for the R8A7791 SoC;
+ "renesas,pci-r8a7794" for the R8A7794 SoC.
- reg: A list of physical regions to access the device: the first is
the operational registers for the OHCI/EHCI controllers and the
second is for the bridge configuration and control registers.
diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index cded02c890aa..5f387ee5b5c5 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -242,7 +242,12 @@ pci_restore_srm_config(void)
void pcibios_fixup_bus(struct pci_bus *bus)
{
- struct pci_dev *dev;
+ struct pci_dev *dev = bus->self;
+
+ if (pci_has_flag(PCI_PROBE_ONLY) && dev &&
+ (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
+ pci_read_bridge_bases(bus);
+ }
list_for_each_entry(dev, &bus->devices, bus_list) {
pdev_save_srm_config(dev);
diff --git a/arch/frv/mb93090-mb00/pci-vdk.c b/arch/frv/mb93090-mb00/pci-vdk.c
index f9c86c475bbd..f211839e2cae 100644
--- a/arch/frv/mb93090-mb00/pci-vdk.c
+++ b/arch/frv/mb93090-mb00/pci-vdk.c
@@ -294,6 +294,8 @@ void pcibios_fixup_bus(struct pci_bus *bus)
printk("### PCIBIOS_FIXUP_BUS(%d)\n",bus->number);
#endif
+ pci_read_bridge_bases(bus);
+
if (bus->number == 0) {
struct pci_dev *dev;
list_for_each_entry(dev, &bus->devices, bus_list) {
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index d89b6013c941..7cc3be9fa7c6 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -533,9 +533,10 @@ void pcibios_fixup_bus(struct pci_bus *b)
{
struct pci_dev *dev;
- if (b->self)
+ if (b->self) {
+ pci_read_bridge_bases(b);
pcibios_fixup_bridge_resources(b->self);
-
+ }
list_for_each_entry(dev, &b->devices, bus_list)
pcibios_fixup_device_resources(dev);
platform_pci_fixup_bus(b);
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 6b8b75266801..ae838ed5fcf2 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -863,7 +863,14 @@ void pcibios_setup_bus_devices(struct pci_bus *bus)
void pcibios_fixup_bus(struct pci_bus *bus)
{
- /* Fixup the bus */
+ /* When called from the generic PCI probe, read PCI<->PCI bridge
+ * bases. This is -not- called when generating the PCI tree from
+ * the OF device-tree.
+ */
+ if (bus->self != NULL)
+ pci_read_bridge_bases(bus);
+
+ /* Now fixup the bus bus */
pcibios_setup_bus_self(bus);
/* Now fixup devices on that bus */
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index c6996cf67a5c..b8a0bf5766f2 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -311,6 +311,12 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
void pcibios_fixup_bus(struct pci_bus *bus)
{
+ struct pci_dev *dev = bus->self;
+
+ if (pci_has_flag(PCI_PROBE_ONLY) && dev &&
+ (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
+ pci_read_bridge_bases(bus);
+ }
}
EXPORT_SYMBOL(PCIBIOS_MIN_IO);
diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c
index deaa893efba5..3dfe2d31c67b 100644
--- a/arch/mn10300/unit-asb2305/pci.c
+++ b/arch/mn10300/unit-asb2305/pci.c
@@ -324,6 +324,7 @@ void pcibios_fixup_bus(struct pci_bus *bus)
struct pci_dev *dev;
if (bus->self) {
+ pci_read_bridge_bases(bus);
pcibios_fixup_bridge_resources(bus->self);
}
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index a1d0632d97c6..7587b2ae5f77 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1032,7 +1032,13 @@ void pcibios_set_master(struct pci_dev *dev)
void pcibios_fixup_bus(struct pci_bus *bus)
{
- /* Fixup the bus */
+ /* When called from the generic PCI probe, read PCI<->PCI bridge
+ * bases. This is -not- called when generating the PCI tree from
+ * the OF device-tree.
+ */
+ pci_read_bridge_bases(bus);
+
+ /* Now fixup the bus bus */
pcibios_setup_bus_self(bus);
/* Now fixup devices on that bus */
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 09d3afc0a181..dc78a4a9a466 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -166,6 +166,7 @@ void pcibios_fixup_bus(struct pci_bus *b)
{
struct pci_dev *dev;
+ pci_read_bridge_bases(b);
list_for_each_entry(dev, &b->devices, bus_list)
pcibios_fixup_device_resources(dev);
}
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index d27b4dcf221f..b848cc3dc913 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -210,6 +210,10 @@ subsys_initcall(pcibios_init);
void pcibios_fixup_bus(struct pci_bus *bus)
{
+ if (bus->parent) {
+ /* This is a subordinate bridge */
+ pci_read_bridge_bases(bus);
+ }
}
void pcibios_set_master(struct pci_dev *dev)
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index baec33c4e698..a0580afe1713 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -560,6 +560,9 @@ dino_fixup_bus(struct pci_bus *bus)
} else if (bus->parent) {
int i;
+ pci_read_bridge_bases(bus);
+
+
for(i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
if((bus->self->resource[i].flags &
(IORESOURCE_IO | IORESOURCE_MEM)) == 0)
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index 7b9e89ba0465..a32c1f6c252c 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -693,6 +693,7 @@ lba_fixup_bus(struct pci_bus *bus)
if (bus->parent) {
int i;
/* PCI-PCI Bridge */
+ pci_read_bridge_bases(bus);
for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++)
pci_claim_bridge_resource(bus->self, i);
} else {
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 769f7e35f1a2..59ac36fe7c42 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -442,7 +442,8 @@ static const struct pci_vpd_ops pci_vpd_pci22_ops = {
static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
void *arg)
{
- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
+ struct pci_dev *tdev = pci_get_slot(dev->bus,
+ PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
ssize_t ret;
if (!tdev)
@@ -456,7 +457,8 @@ static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
static ssize_t pci_vpd_f0_write(struct pci_dev *dev, loff_t pos, size_t count,
const void *arg)
{
- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
+ struct pci_dev *tdev = pci_get_slot(dev->bus,
+ PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
ssize_t ret;
if (!tdev)
@@ -473,22 +475,6 @@ static const struct pci_vpd_ops pci_vpd_f0_ops = {
.release = pci_vpd_pci22_release,
};
-static int pci_vpd_f0_dev_check(struct pci_dev *dev)
-{
- struct pci_dev *tdev = pci_get_slot(dev->bus, PCI_SLOT(dev->devfn));
- int ret = 0;
-
- if (!tdev)
- return -ENODEV;
- if (!tdev->vpd || !tdev->multifunction ||
- dev->class != tdev->class || dev->vendor != tdev->vendor ||
- dev->device != tdev->device)
- ret = -ENODEV;
-
- pci_dev_put(tdev);
- return ret;
-}
-
int pci_vpd_pci22_init(struct pci_dev *dev)
{
struct pci_vpd_pci22 *vpd;
@@ -497,12 +483,7 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
cap = pci_find_capability(dev, PCI_CAP_ID_VPD);
if (!cap)
return -ENODEV;
- if (dev->dev_flags & PCI_DEV_FLAGS_VPD_REF_F0) {
- int ret = pci_vpd_f0_dev_check(dev);
- if (ret)
- return ret;
- }
vpd = kzalloc(sizeof(*vpd), GFP_ATOMIC);
if (!vpd)
return -ENOMEM;
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 6fbd3f2b5992..d3346d23963b 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -256,6 +256,8 @@ bool pci_bus_clip_resource(struct pci_dev *dev, int idx)
res->start = start;
res->end = end;
+ res->flags &= ~IORESOURCE_UNSET;
+ orig_res.flags &= ~IORESOURCE_UNSET;
dev_printk(KERN_DEBUG, &dev->dev, "%pR clipped to %pR\n",
&orig_res, res);
diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/host/pci-rcar-gen2.c
index 367e28fa7564..c4f64bfee551 100644
--- a/drivers/pci/host/pci-rcar-gen2.c
+++ b/drivers/pci/host/pci-rcar-gen2.c
@@ -362,6 +362,7 @@ static int rcar_pci_probe(struct platform_device *pdev)
static struct of_device_id rcar_pci_of_match[] = {
{ .compatible = "renesas,pci-r8a7790", },
{ .compatible = "renesas,pci-r8a7791", },
+ { .compatible = "renesas,pci-r8a7794", },
{ },
};
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 0b2be174d981..8361d27e5eca 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -676,15 +676,20 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus)
static void pci_set_bus_msi_domain(struct pci_bus *bus)
{
struct irq_domain *d;
+ struct pci_bus *b;
/*
- * Either bus is the root, and we must obtain it from the
- * firmware, or we inherit it from the bridge device.
+ * The bus can be a root bus, a subordinate bus, or a virtual bus
+ * created by an SR-IOV device. Walk up to the first bridge device
+ * found or derive the domain from the host bridge.
*/
- if (pci_is_root_bus(bus))
- d = pci_host_bridge_msi_domain(bus);
- else
- d = dev_get_msi_domain(&bus->self->dev);
+ for (b = bus, d = NULL; !d && !pci_is_root_bus(b); b = b->parent) {
+ if (b->self)
+ d = dev_get_msi_domain(&b->self->dev);
+ }
+
+ if (!d)
+ d = pci_host_bridge_msi_domain(b);
dev_set_msi_domain(&bus->dev, d);
}
@@ -855,9 +860,6 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, int pass)
child->bridge_ctl = bctl;
}
- /* Read and initialize bridge resources */
- pci_read_bridge_bases(child);
-
cmax = pci_scan_child_bus(child);
if (cmax > subordinate)
dev_warn(&dev->dev, "bridge has subordinate %02x but max busn %02x\n",
@@ -918,9 +920,6 @@ int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, int pass)
if (!is_cardbus) {
child->bridge_ctl = bctl;
-
- /* Read and initialize bridge resources */
- pci_read_bridge_bases(child);
max = pci_scan_child_bus(child);
} else {
/*
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 6a30252cd79f..b03373fd05ca 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1907,11 +1907,27 @@ static void quirk_netmos(struct pci_dev *dev)
DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID,
PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos);
+/*
+ * Quirk non-zero PCI functions to route VPD access through function 0 for
+ * devices that share VPD resources between functions. The functions are
+ * expected to be identical devices.
+ */
static void quirk_f0_vpd_link(struct pci_dev *dev)
{
- if (!dev->multifunction || !PCI_FUNC(dev->devfn))
+ struct pci_dev *f0;
+
+ if (!PCI_FUNC(dev->devfn))
return;
- dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
+
+ f0 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
+ if (!f0)
+ return;
+
+ if (f0->vpd && dev->class == f0->class &&
+ dev->vendor == f0->vendor && dev->device == f0->device)
+ dev->dev_flags |= PCI_DEV_FLAGS_VPD_REF_F0;
+
+ pci_dev_put(f0);
}
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
PCI_CLASS_NETWORK_ETHERNET, 8, quirk_f0_vpd_link);
OpenPOWER on IntegriCloud