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| author | Michael Brown | 2005-04-16 13:42:56 +0200 |
|---|---|---|
| committer | Michael Brown | 2005-04-16 13:42:56 +0200 |
| commit | e29be5e342e82f789e119beda7fd21ec107f1598 (patch) | |
| tree | 3f7bd0b081447f5b9b9f3ecb824f05ce2f92f601 /src/include | |
| parent | Read number of PCI buses returned by BIOS so that we can scan more (diff) | |
| download | ipxe-e29be5e342e82f789e119beda7fd21ec107f1598.tar.gz ipxe-e29be5e342e82f789e119beda7fd21ec107f1598.tar.xz ipxe-e29be5e342e82f789e119beda7fd21ec107f1598.zip | |
Speed up PCI bus scanning by skipping fns 1-7 if fn 0 is not present.
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/pci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/include/pci.h b/src/include/pci.h index 9b7fcadae..d4e871d47 100644 --- a/src/include/pci.h +++ b/src/include/pci.h @@ -252,6 +252,7 @@ struct pci_device { #define PCI_BUS(busdevfn) ( ( (busdevfn) >> 8 ) & 0xff ) #define PCI_DEV(busdevfn) ( ( (busdevfn) >> 3 ) & 0x1f ) #define PCI_FUNC(busdevfn) ( (busdevfn) & 0x07 ) +#define PCI_FN0(busdevfn) ( (busdevfn) & 0xfff8 ) /* * An individual PCI device identified by vendor and device IDs |