diff options
| -rw-r--r-- | drivers/pci/pci.h | 9 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 20 |
2 files changed, 18 insertions, 11 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 392388468f6..d881fde8bb8 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -162,6 +162,15 @@ struct pci_slot_attribute { }; #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr) +enum pci_bar_type { + pci_bar_unknown, /* Standard PCI BAR probe */ + pci_bar_io, /* An io port BAR */ + pci_bar_mem32, /* A 32-bit memory BAR */ + pci_bar_mem64, /* A 64-bit memory BAR */ +}; + +extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, + struct resource *res, unsigned int reg); extern void pci_enable_ari(struct pci_dev *dev); /** * pci_ari_enabled - query ARI forwarding status diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index e1cf5d50ed4..5372d3699e0 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -135,13 +135,6 @@ static u64 pci_size(u64 base, u64 maxbase, u64 mask) return size; } -enum pci_bar_type { - pci_bar_unknown, /* Standard PCI BAR probe */ - pci_bar_io, /* An io port BAR */ - pci_bar_mem32, /* A 32-bit memory BAR */ - pci_bar_mem64, /* A 64-bit memory BAR */ -}; - static inline enum pci_bar_type decode_bar(struct resource *res, u32 bar) { if ((bar & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) { @@ -156,11 +149,16 @@ static inline enum pci_bar_type decode_bar(struct resource *res, u32 bar) return pci_bar_mem32; } -/* - * If the type is not unknown, we assume that the lowest bit is 'enable'. - * Returns 1 if the BAR was 64-bit and 0 if it was 32-bit. +/** + * pci_read_base - read a PCI BAR + * @dev: the PCI device + * @type: type of the BAR + * @res: resource buffer to be filled in + * @pos: BAR position in the config space + * + * Returns 1 if the BAR is 64-bit, or 0 if 32-bit. */ -static int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, +int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, struct resource *res, unsigned int pos) { u32 l, sz, mask; |