diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2009-11-14 01:34:08 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-11-25 00:29:11 +0100 |
| commit | df5eb1d67e8074dfbc23cf396c556116728187b3 (patch) | |
| tree | 1512457b52c6763ee9921094f62690d0a3b8b1e3 /arch/x86/include/asm | |
| parent | x86/PCI: MMCONFIG: reject MMCONFIG apertures at address zero (diff) | |
| download | linux-df5eb1d67e8074dfbc23cf396c556116728187b3.tar.xz linux-df5eb1d67e8074dfbc23cf396c556116728187b3.zip | |
x86/PCI: MMCONFIG: add PCI_MMCFG_BUS_OFFSET() to factor common expression
This factors out the common "bus << 20" expression used when computing the
MMCONFIG address.
Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/pci_x86.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index b399988eee3a..7d94a235ec82 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -124,6 +124,8 @@ extern void __init pci_mmcfg_arch_free(void); extern struct acpi_mcfg_allocation *pci_mmcfg_config; extern int pci_mmcfg_config_num; +#define PCI_MMCFG_BUS_OFFSET(bus) ((bus) << 20) + /* * AMD Fam10h CPUs are buggy, and cannot access MMIO config space * on their northbrige except through the * %eax register. As such, you MUST |