diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/probe.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f03ed96533d..3e7a00a3fc8 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -100,8 +100,11 @@ 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 enum pci_bar_type decode_bar(struct pci_dev *dev, + struct resource *res, u32 bar) { + u32 mem_type; + if ((bar & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO) { res->flags = bar & ~PCI_BASE_ADDRESS_IO_MASK; return pci_bar_io; @@ -109,8 +112,21 @@ static inline enum pci_bar_type decode_bar(struct resource *res, u32 bar) res->flags = bar & ~PCI_BASE_ADDRESS_MEM_MASK; - if (res->flags & PCI_BASE_ADDRESS_MEM_TYPE_64) + 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: return pci_bar_mem64; + default: + dev_warn(&dev->dev, + "mem unknown type %x treated as 32-bit BAR\n", + mem_type); + break; + } return pci_bar_mem32; } @@ -164,7 +180,7 @@ 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); + type = decode_bar(dev, res, l); res->flags |= pci_calc_resource_flags(l) | IORESOURCE_SIZEALIGN; if (type == pci_bar_io) { l &= PCI_BASE_ADDRESS_IO_MASK; |