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path: root/drivers/pci/probe.c
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Diffstat (limited to 'drivers/pci/probe.c')
-rw-r--r--drivers/pci/probe.c33
1 files changed, 29 insertions, 4 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 40e75f6a5056..8105e32117f6 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -235,7 +235,10 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
res->start = l64;
res->end = l64 + sz64;
dev_printk(KERN_DEBUG, &dev->dev,
- "reg %x 64bit mmio: %pR\n", pos, res);
+ "reg %x %s: %pR\n", pos,
+ (res->flags & IORESOURCE_PREFETCH) ?
+ "64bit mmio pref" : "64bit mmio",
+ res);
}
res->flags |= IORESOURCE_MEM_64;
@@ -249,7 +252,9 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
res->end = l + sz;
dev_printk(KERN_DEBUG, &dev->dev, "reg %x %s: %pR\n", pos,
- (res->flags & IORESOURCE_IO) ? "io port" : "32bit mmio",
+ (res->flags & IORESOURCE_IO) ? "io port" :
+ ((res->flags & IORESOURCE_PREFETCH) ?
+ "32bit mmio pref" : "32bit mmio"),
res);
}
@@ -692,6 +697,23 @@ static void set_pcie_port_type(struct pci_dev *pdev)
pdev->pcie_type = (reg16 & PCI_EXP_FLAGS_TYPE) >> 4;
}
+static void set_pcie_hotplug_bridge(struct pci_dev *pdev)
+{
+ int pos;
+ u16 reg16;
+ u32 reg32;
+
+ pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+ if (!pos)
+ return;
+ pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &reg16);
+ if (!(reg16 & PCI_EXP_FLAGS_SLOT))
+ return;
+ pci_read_config_dword(pdev, pos + PCI_EXP_SLTCAP, &reg32);
+ if (reg32 & PCI_EXP_SLTCAP_HPC)
+ pdev->is_hotplug_bridge = 1;
+}
+
#define LEGACY_IO_RESOURCE (IORESOURCE_IO | IORESOURCE_PCI_FIXED)
/**
@@ -799,6 +821,7 @@ int pci_setup_device(struct pci_dev *dev)
pci_read_irq(dev);
dev->transparent = ((dev->class & 0xff) == 1);
pci_read_bases(dev, 2, PCI_ROM_ADDRESS1);
+ set_pcie_hotplug_bridge(dev);
break;
case PCI_HEADER_TYPE_CARDBUS: /* CardBus bridge header */
@@ -1009,6 +1032,9 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
/* Fix up broken headers */
pci_fixup_device(pci_fixup_header, dev);
+ /* Clear the state_saved flag. */
+ dev->state_saved = false;
+
/* Initialize various capabilities */
pci_init_capabilities(dev);
@@ -1061,8 +1087,7 @@ int pci_scan_slot(struct pci_bus *bus, int devfn)
if (dev && !dev->is_added) /* new device? */
nr++;
- if ((dev && dev->multifunction) ||
- (!dev && pcibios_scan_all_fns(bus, devfn))) {
+ if (dev && dev->multifunction) {
for (fn = 1; fn < 8; fn++) {
dev = pci_scan_single_device(bus, devfn + fn);
if (dev) {