aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-06 17:29:16 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-06 17:29:16 -0400
commit6106611e15b036bccfb4cfc0ed8bf83aab3ee226 (patch)
tree84364e663af7f5fbc37a032c57491f06b1d85ae3 /arch
parentf1ea7254726d25a333056619ec6b1a8ee1b7358d (diff)
parentd99e90164e6cf2eb85fa94d547d6336f8127a107 (diff)
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: gart iommu have direct mapping when agp is present too
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/pci-gart_64.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 49285f8fd4d5..be33a5442d82 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -626,7 +626,6 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
626 struct pci_dev *dev; 626 struct pci_dev *dev;
627 void *gatt; 627 void *gatt;
628 int i, error; 628 int i, error;
629 unsigned long start_pfn, end_pfn;
630 629
631 printk(KERN_INFO "PCI-DMA: Disabling AGP.\n"); 630 printk(KERN_INFO "PCI-DMA: Disabling AGP.\n");
632 aper_size = aper_base = info->aper_size = 0; 631 aper_size = aper_base = info->aper_size = 0;
@@ -672,12 +671,6 @@ static __init int init_k8_gatt(struct agp_kern_info *info)
672 printk(KERN_INFO "PCI-DMA: aperture base @ %x size %u KB\n", 671 printk(KERN_INFO "PCI-DMA: aperture base @ %x size %u KB\n",
673 aper_base, aper_size>>10); 672 aper_base, aper_size>>10);
674 673
675 /* need to map that range */
676 end_pfn = (aper_base>>PAGE_SHIFT) + (aper_size>>PAGE_SHIFT);
677 if (end_pfn > max_low_pfn_mapped) {
678 start_pfn = (aper_base>>PAGE_SHIFT);
679 init_memory_mapping(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT);
680 }
681 return 0; 674 return 0;
682 675
683 nommu: 676 nommu:
@@ -727,7 +720,8 @@ void __init gart_iommu_init(void)
727{ 720{
728 struct agp_kern_info info; 721 struct agp_kern_info info;
729 unsigned long iommu_start; 722 unsigned long iommu_start;
730 unsigned long aper_size; 723 unsigned long aper_base, aper_size;
724 unsigned long start_pfn, end_pfn;
731 unsigned long scratch; 725 unsigned long scratch;
732 long i; 726 long i;
733 727
@@ -765,8 +759,16 @@ void __init gart_iommu_init(void)
765 return; 759 return;
766 } 760 }
767 761
762 /* need to map that range */
763 aper_size = info.aper_size << 20;
764 aper_base = info.aper_base;
765 end_pfn = (aper_base>>PAGE_SHIFT) + (aper_size>>PAGE_SHIFT);
766 if (end_pfn > max_low_pfn_mapped) {
767 start_pfn = (aper_base>>PAGE_SHIFT);
768 init_memory_mapping(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT);
769 }
770
768 printk(KERN_INFO "PCI-DMA: using GART IOMMU.\n"); 771 printk(KERN_INFO "PCI-DMA: using GART IOMMU.\n");
769 aper_size = info.aper_size * 1024 * 1024;
770 iommu_size = check_iommu_size(info.aper_base, aper_size); 772 iommu_size = check_iommu_size(info.aper_base, aper_size);
771 iommu_pages = iommu_size >> PAGE_SHIFT; 773 iommu_pages = iommu_size >> PAGE_SHIFT;
772 774