diff options
| author | Steve French <sfrench@us.ibm.com> | 2006-06-25 15:57:32 +0000 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2006-06-25 15:57:32 +0000 |
| commit | bbe5d235ee201705530a7153b57e141cd77d818b (patch) | |
| tree | e98c31b4cb2ced6357a87a02596f9ecdbd6dbb26 /arch/x86_64/pci/mmconfig.c | |
| parent | 189acaaef81b1d71aedd0d28810de24160c2e781 (diff) | |
| parent | dfd8317d3340f03bc06eba6b58f0ec0861da4a13 (diff) | |
Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'arch/x86_64/pci/mmconfig.c')
| -rw-r--r-- | arch/x86_64/pci/mmconfig.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c index a2060e4d5de6..3c55c76c6fd5 100644 --- a/arch/x86_64/pci/mmconfig.c +++ b/arch/x86_64/pci/mmconfig.c @@ -13,7 +13,10 @@ #include "pci.h" -#define MMCONFIG_APER_SIZE (256*1024*1024) +/* aperture is up to 256MB but BIOS may reserve less */ +#define MMCONFIG_APER_MIN (2 * 1024*1024) +#define MMCONFIG_APER_MAX (256 * 1024*1024) + /* Verify the first 16 busses. We assume that systems with more busses get MCFG right. */ #define MAX_CHECK_BUS 16 @@ -175,9 +178,10 @@ void __init pci_mmcfg_init(void) return; if (!e820_all_mapped(pci_mmcfg_config[0].base_address, - pci_mmcfg_config[0].base_address + MMCONFIG_APER_SIZE, + pci_mmcfg_config[0].base_address + MMCONFIG_APER_MIN, E820_RESERVED)) { - printk(KERN_ERR "PCI: BIOS Bug: MCFG area is not E820-reserved\n"); + printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %x is not E820-reserved\n", + pci_mmcfg_config[0].base_address); printk(KERN_ERR "PCI: Not using MMCONFIG.\n"); return; } @@ -190,7 +194,8 @@ void __init pci_mmcfg_init(void) } for (i = 0; i < pci_mmcfg_config_num; ++i) { pci_mmcfg_virt[i].cfg = &pci_mmcfg_config[i]; - pci_mmcfg_virt[i].virt = ioremap_nocache(pci_mmcfg_config[i].base_address, MMCONFIG_APER_SIZE); + pci_mmcfg_virt[i].virt = ioremap_nocache(pci_mmcfg_config[i].base_address, + MMCONFIG_APER_MAX); if (!pci_mmcfg_virt[i].virt) { printk("PCI: Cannot map mmconfig aperture for segment %d\n", pci_mmcfg_config[i].pci_segment_group_number); |