diff options
| author | Andi Kleen <ak@suse.de> | 2006-09-26 10:52:40 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-09-26 10:52:40 +0200 |
| commit | 9abd79280bbb9f56049f0168f412c3538cadb6eb (patch) | |
| tree | fb72faaf2fddf382c3ab57e716d182ab9dd1406e /arch/i386/pci/mmconfig.c | |
| parent | 5e544d618f0fb21011f36f28d5e3952b9dc109d2 (diff) | |
[PATCH] i386/x86-64: Only do MCFG e820 check when type 1 works
Needs earlier patch to split type 1 probing from use.
This patch should fix the x86 macs where type 1 PCI config space access
doesn't work, but MCFG does. They also don't have a usable e820 table
so the e820 sanity check failed.
Instead assume now that if type 1 doesn't work then MCFG must work
and don't do the e820 check.
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/i386/pci/mmconfig.c')
| -rw-r--r-- | arch/i386/pci/mmconfig.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c index 44155c5e85d..2c4f585510c 100644 --- a/arch/i386/pci/mmconfig.c +++ b/arch/i386/pci/mmconfig.c @@ -198,7 +198,9 @@ void __init pci_mmcfg_init(int type) (pci_mmcfg_config[0].base_address == 0)) return; - if (!e820_all_mapped(pci_mmcfg_config[0].base_address, + /* Only do this check when type 1 works. If it doesn't work + assume we run on a Mac and always use MCFG */ + if (type == 1 && !e820_all_mapped(pci_mmcfg_config[0].base_address, pci_mmcfg_config[0].base_address + MMCONFIG_APER_MIN, E820_RESERVED)) { printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %x is not E820-reserved\n", |