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authorYinghai Lu <yinghai@kernel.org>2012-11-03 21:39:25 -0700
committerBjorn Helgaas <bhelgaas@google.com>2013-01-07 14:47:16 -0700
commitc7f4bbc92feee2986212ef3b42c806e2257197dc (patch)
tree99c6a587123b3c5b4067f82ff1ad331a041b7fc1 /arch/x86/pci
parentf7ac356dc3da1f69dc52cb6273e08e53b85b4884 (diff)
x86/PCI: Factor out pcibios_allocate_dev_resources()
Factor pcibios_allocate_dev_resources() out of pcibios_allocate_resources(). Currently we only allocate these resources at boot-time with a for_each_pci_dev() loop. Eventually we'll use pcibios_allocate_dev_resources() for hot-added devices, too. [bhelgaas: changelog] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/x86/pci')
-rw-r--r--arch/x86/pci/i386.c42
1 files changed, 23 insertions, 19 deletions
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 980036286909..5817cf235d9a 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -232,9 +232,8 @@ struct pci_check_idx_range {
int end;
};
-static void __init pcibios_allocate_resources(int pass)
+static void __init pcibios_allocate_dev_resources(struct pci_dev *dev, int pass)
{
- struct pci_dev *dev = NULL;
int idx, disabled, i;
u16 command;
struct resource *r;
@@ -246,14 +245,13 @@ static void __init pcibios_allocate_resources(int pass)
#endif
};
- for_each_pci_dev(dev) {
- pci_read_config_word(dev, PCI_COMMAND, &command);
- for (i = 0; i < ARRAY_SIZE(idx_range); i++)
+ pci_read_config_word(dev, PCI_COMMAND, &command);
+ 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 */
+ if (r->parent) /* Already allocated */
continue;
- if (!r->start) /* Address not assigned at all */
+ if (!r->start) /* Address not assigned at all */
continue;
if (r->flags & IORESOURCE_IO)
disabled = !(command & PCI_COMMAND_IO);
@@ -272,23 +270,29 @@ static void __init pcibios_allocate_resources(int pass)
}
}
}
- if (!pass) {
- r = &dev->resource[PCI_ROM_RESOURCE];
- if (r->flags & IORESOURCE_ROM_ENABLE) {
- /* Turn the ROM off, leave the resource region,
- * but keep it unregistered. */
- u32 reg;
- dev_dbg(&dev->dev, "disabling ROM %pR\n", r);
- r->flags &= ~IORESOURCE_ROM_ENABLE;
- pci_read_config_dword(dev,
- dev->rom_base_reg, &reg);
- pci_write_config_dword(dev, dev->rom_base_reg,
+ if (!pass) {
+ r = &dev->resource[PCI_ROM_RESOURCE];
+ if (r->flags & IORESOURCE_ROM_ENABLE) {
+ /* Turn the ROM off, leave the resource region,
+ * but keep it unregistered. */
+ u32 reg;
+ dev_dbg(&dev->dev, "disabling ROM %pR\n", r);
+ r->flags &= ~IORESOURCE_ROM_ENABLE;
+ pci_read_config_dword(dev, dev->rom_base_reg, &reg);
+ pci_write_config_dword(dev, dev->rom_base_reg,
reg & ~PCI_ROM_ADDRESS_ENABLE);
- }
}
}
}
+static void __init pcibios_allocate_resources(int pass)
+{
+ struct pci_dev *dev = NULL;
+
+ for_each_pci_dev(dev)
+ pcibios_allocate_dev_resources(dev, pass);
+}
+
static int __init pcibios_assign_resources(void)
{
struct pci_dev *dev = NULL;