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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.c96
1 files changed, 48 insertions, 48 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 48849ffdd67..795c9026d55 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -52,6 +52,7 @@ static void release_pcibus_dev(struct device *dev)
if (pci_bus->bridge)
put_device(pci_bus->bridge);
pci_bus_remove_resources(pci_bus);
+ pci_release_bus_of_node(pci_bus);
kfree(pci_bus);
}
@@ -67,21 +68,6 @@ static int __init pcibus_class_init(void)
}
postcore_initcall(pcibus_class_init);
-/*
- * Translate the low bits of the PCI base
- * to the resource type
- */
-static inline unsigned int pci_calc_resource_flags(unsigned int flags)
-{
- if (flags & PCI_BASE_ADDRESS_SPACE_IO)
- return IORESOURCE_IO;
-
- if (flags & PCI_BASE_ADDRESS_MEM_PREFETCH)
- return IORESOURCE_MEM | IORESOURCE_PREFETCH;
-
- return IORESOURCE_MEM;
-}
-
static u64 pci_size(u64 base, u64 maxbase, u64 mask)
{
u64 size = mask & maxbase; /* Find the significant bits */
@@ -100,18 +86,39 @@ static u64 pci_size(u64 base, u64 maxbase, u64 mask)
return size;
}
-static inline enum pci_bar_type decode_bar(struct resource *res, u32 bar)
+static inline unsigned long decode_bar(struct pci_dev *dev, u32 bar)
{
+ u32 mem_type;
+ unsigned long flags;
+
if ((bar & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) {
- res->flags = bar & ~PCI_BASE_ADDRESS_IO_MASK;
- return pci_bar_io;
+ flags = bar & ~PCI_BASE_ADDRESS_IO_MASK;
+ flags |= IORESOURCE_IO;
+ return flags;
}
- res->flags = bar & ~PCI_BASE_ADDRESS_MEM_MASK;
+ flags = bar & ~PCI_BASE_ADDRESS_MEM_MASK;
+ flags |= IORESOURCE_MEM;
+ if (flags & PCI_BASE_ADDRESS_MEM_PREFETCH)
+ flags |= IORESOURCE_PREFETCH;
- if (res->flags & PCI_BASE_ADDRESS_MEM_TYPE_64)
- return pci_bar_mem64;
- return pci_bar_mem32;
+ mem_type = bar & PCI_BASE_ADDRESS_MEM_TYPE_MASK;
+ switch (mem_type) {
+ case PCI_BASE_ADDRESS_MEM_TYPE_32:
+ break;
+ case PCI_BASE_ADDRESS_MEM_TYPE_1M:
+ dev_info(&dev->dev, "1M mem BAR treated as 32-bit BAR\n");
+ break;
+ case PCI_BASE_ADDRESS_MEM_TYPE_64:
+ flags |= IORESOURCE_MEM_64;
+ break;
+ default:
+ dev_warn(&dev->dev,
+ "mem unknown type %x treated as 32-bit BAR\n",
+ mem_type);
+ break;
+ }
+ return flags;
}
/**
@@ -164,11 +171,11 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
l = 0;
if (type == pci_bar_unknown) {
- type = decode_bar(res, l);
- res->flags |= pci_calc_resource_flags(l) | IORESOURCE_SIZEALIGN;
- if (type == pci_bar_io) {
+ res->flags = decode_bar(dev, l);
+ res->flags |= IORESOURCE_SIZEALIGN;
+ if (res->flags & IORESOURCE_IO) {
l &= PCI_BASE_ADDRESS_IO_MASK;
- mask = PCI_BASE_ADDRESS_IO_MASK & IO_SPACE_LIMIT;
+ mask = PCI_BASE_ADDRESS_IO_MASK & (u32) IO_SPACE_LIMIT;
} else {
l &= PCI_BASE_ADDRESS_MEM_MASK;
mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
@@ -179,7 +186,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
mask = (u32)PCI_ROM_ADDRESS_MASK;
}
- if (type == pci_bar_mem64) {
+ if (res->flags & IORESOURCE_MEM_64) {
u64 l64 = l;
u64 sz64 = sz;
u64 mask64 = mask | (u64)~0 << 32;
@@ -203,7 +210,6 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
goto fail;
}
- 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);
@@ -229,7 +235,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
}
out:
- return (type == pci_bar_mem64) ? 1 : 0;
+ return (res->flags & IORESOURCE_MEM_64) ? 1 : 0;
fail:
res->flags = 0;
goto out;
@@ -283,10 +289,6 @@ static void __devinit pci_read_bridge_io(struct pci_bus *child)
if (!res->end)
res->end = limit + 0xfff;
dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res);
- } else {
- dev_printk(KERN_DEBUG, &dev->dev,
- " bridge window [io %#06lx-%#06lx] (disabled)\n",
- base, limit);
}
}
@@ -307,10 +309,6 @@ static void __devinit pci_read_bridge_mmio(struct pci_bus *child)
res->start = base;
res->end = limit + 0xfffff;
dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res);
- } else {
- dev_printk(KERN_DEBUG, &dev->dev,
- " bridge window [mem %#010lx-%#010lx] (disabled)\n",
- base, limit + 0xfffff);
}
}
@@ -358,10 +356,6 @@ static void __devinit pci_read_bridge_mmio_pref(struct pci_bus *child)
res->start = base;
res->end = limit + 0xfffff;
dev_printk(KERN_DEBUG, &dev->dev, " bridge window %pR\n", res);
- } else {
- dev_printk(KERN_DEBUG, &dev->dev,
- " bridge window [mem %#010lx-%#010lx pref] (disabled)\n",
- base, limit + 0xfffff);
}
}
@@ -588,7 +582,7 @@ static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent,
child->self = bridge;
child->bridge = get_device(&bridge->dev);
-
+ pci_set_bus_of_node(child);
pci_set_bus_speed(child);
/* Set up default resource pointers and names.. */
@@ -724,12 +718,14 @@ int __devinit pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
pci_write_config_word(dev, PCI_STATUS, 0xffff);
/* Prevent assigning a bus number that already exists.
- * This can happen when a bridge is hot-plugged */
- if (pci_find_bus(pci_domain_nr(bus), max+1))
- goto out;
- child = pci_add_new_bus(bus, dev, ++max);
- if (!child)
- goto out;
+ * This can happen when a bridge is hot-plugged, so in
+ * this case we only re-scan this bus. */
+ child = pci_find_bus(pci_domain_nr(bus), max+1);
+ if (!child) {
+ child = pci_add_new_bus(bus, dev, ++max);
+ if (!child)
+ goto out;
+ }
buses = (buses & 0xff000000)
| ((unsigned int)(child->primary) << 0)
| ((unsigned int)(child->secondary) << 8)
@@ -1038,6 +1034,7 @@ static void pci_release_dev(struct device *dev)
pci_dev = to_pci_dev(dev);
pci_release_capabilities(pci_dev);
+ pci_release_of_node(pci_dev);
kfree(pci_dev);
}
@@ -1157,6 +1154,8 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
dev->vendor = l & 0xffff;
dev->device = (l >> 16) & 0xffff;
+ pci_set_of_node(dev);
+
if (pci_setup_device(dev)) {
kfree(dev);
return NULL;
@@ -1409,6 +1408,7 @@ struct pci_bus * pci_create_bus(struct device *parent,
goto dev_reg_err;
b->bridge = get_device(dev);
device_enable_async_suspend(b->bridge);
+ pci_set_bus_of_node(b);
if (!parent)
set_dev_node(b->bridge, pcibus_to_node(b));
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-20 06:00:29 +0000