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path: root/drivers/pci/pci.c
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-rw-r--r--drivers/pci/pci.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index deeab19d7d10..7e9c0f3936dd 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2201,6 +2201,28 @@ int pci_select_bars(struct pci_dev *dev, unsigned long flags)
2201 return bars; 2201 return bars;
2202} 2202}
2203 2203
2204/**
2205 * pci_resource_bar - get position of the BAR associated with a resource
2206 * @dev: the PCI device
2207 * @resno: the resource number
2208 * @type: the BAR type to be filled in
2209 *
2210 * Returns BAR position in config space, or 0 if the BAR is invalid.
2211 */
2212int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type)
2213{
2214 if (resno < PCI_ROM_RESOURCE) {
2215 *type = pci_bar_unknown;
2216 return PCI_BASE_ADDRESS_0 + 4 * resno;
2217 } else if (resno == PCI_ROM_RESOURCE) {
2218 *type = pci_bar_mem32;
2219 return dev->rom_base_reg;
2220 }
2221
2222 dev_err(&dev->dev, "BAR: invalid resource #%d\n", resno);
2223 return 0;
2224}
2225
2204static void __devinit pci_no_domains(void) 2226static void __devinit pci_no_domains(void)
2205{ 2227{
2206#ifdef CONFIG_PCI_DOMAINS 2228#ifdef CONFIG_PCI_DOMAINS