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authorTony Luck <tony.luck@intel.com>2006-06-23 13:46:23 -0700
committerTony Luck <tony.luck@intel.com>2006-06-23 13:46:23 -0700
commit8cf60e04a131310199d5776e2f9e915f0c468899 (patch)
tree373a68e88e6737713a0a5723d552cdeefffff929 /arch/i386/pci/mmconfig.c
parent1323523f505606cfd24af6122369afddefc3b09d (diff)
parent95eaa5fa8eb2c345244acd5f65b200b115ae8c65 (diff)
Auto-update from upstream
Diffstat (limited to 'arch/i386/pci/mmconfig.c')
-rw-r--r--arch/i386/pci/mmconfig.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c
index 6b1ea0c9a57..e545b0992c4 100644
--- a/arch/i386/pci/mmconfig.c
+++ b/arch/i386/pci/mmconfig.c
@@ -15,7 +15,9 @@
#include <asm/e820.h>
#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)
/* Assume systems with more busses have correct MCFG */
#define MAX_CHECK_BUS 16
@@ -197,9 +199,10 @@ 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;
}