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-rw-r--r--linux-core/ati_pcigart.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/linux-core/ati_pcigart.c b/linux-core/ati_pcigart.c
index beaa4424..34081d4f 100644
--- a/linux-core/ati_pcigart.c
+++ b/linux-core/ati_pcigart.c
@@ -34,6 +34,8 @@
#include "drmP.h"
# define ATI_PCIGART_PAGE_SIZE 4096 /**< PCI GART page size */
+# define ATI_PCIGART_PAGE_MASK (~(ATI_PCIGART_PAGE_SIZE-1))
+
static int drm_ati_alloc_pcigart_table(struct drm_device *dev,
struct drm_ati_pcigart_info *gart_info)
{
@@ -148,18 +150,23 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *ga
bus_address = 0;
goto done;
}
- page_base = (u32) entry->busaddr[i];
for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
switch(gart_info->gart_reg_if) {
case DRM_ATI_GART_IGP:
+ page_base = (u32) entry->busaddr[i] & ATI_PCIGART_PAGE_MASK;
+ page_base |= (upper_32_bits(entry->busaddr[i]) & 0xff) << 4;
*pci_gart = cpu_to_le32((page_base) | 0xc);
break;
case DRM_ATI_GART_PCIE:
+ page_base = (u32)(entry->busaddr[i] & ATI_PCIGART_PAGE_MASK);
+ page_base >>= 8;
+ page_base |= (upper_32_bits(entry->busaddr[i]) & 0xff) << 24;
*pci_gart = cpu_to_le32((page_base >> 8) | 0xc);
break;
default:
case DRM_ATI_GART_PCI:
+ page_base = (u32) entry->busaddr[i];
*pci_gart = cpu_to_le32(page_base);
break;
}