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path: root/drivers/gpu/drm/ati_pcigart.c
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Diffstat (limited to 'drivers/gpu/drm/ati_pcigart.c')
-rw-r--r--drivers/gpu/drm/ati_pcigart.c40
1 files changed, 27 insertions, 13 deletions
diff --git a/drivers/gpu/drm/ati_pcigart.c b/drivers/gpu/drm/ati_pcigart.c
index c533d0c9ec6..628eae3e9b8 100644
--- a/drivers/gpu/drm/ati_pcigart.c
+++ b/drivers/gpu/drm/ati_pcigart.c
@@ -77,7 +77,7 @@ int drm_ati_pcigart_cleanup(struct drm_device *dev, struct drm_ati_pcigart_info
if (!entry->busaddr[i])
break;
pci_unmap_page(dev->pdev, entry->busaddr[i],
- PAGE_SIZE, PCI_DMA_TODEVICE);
+ PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
}
if (gart_info->gart_table_location == DRM_ATI_GART_MAIN)
@@ -95,13 +95,14 @@ EXPORT_SYMBOL(drm_ati_pcigart_cleanup);
int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *gart_info)
{
+ struct drm_local_map *map = &gart_info->mapping;
struct drm_sg_mem *entry = dev->sg;
void *address = NULL;
unsigned long pages;
- u32 *pci_gart, page_base;
+ u32 *pci_gart = NULL, page_base, gart_idx;
dma_addr_t bus_address = 0;
int i, j, ret = 0;
- int max_pages;
+ int max_ati_pages, max_real_pages;
if (!entry) {
DRM_ERROR("no scatter/gather memory!\n");
@@ -117,6 +118,7 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *ga
goto done;
}
+ pci_gart = gart_info->table_handle->vaddr;
address = gart_info->table_handle->vaddr;
bus_address = gart_info->table_handle->busaddr;
} else {
@@ -127,18 +129,23 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *ga
(unsigned long)address);
}
- pci_gart = (u32 *) address;
- max_pages = (gart_info->table_size / sizeof(u32));
- pages = (entry->pages <= max_pages)
- ? entry->pages : max_pages;
+ max_ati_pages = (gart_info->table_size / sizeof(u32));
+ max_real_pages = max_ati_pages / (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE);
+ pages = (entry->pages <= max_real_pages)
+ ? entry->pages : max_real_pages;
- memset(pci_gart, 0, max_pages * sizeof(u32));
+ if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) {
+ memset(pci_gart, 0, max_ati_pages * sizeof(u32));
+ } else {
+ memset_io((void __iomem *)map->handle, 0, max_ati_pages * sizeof(u32));
+ }
+ gart_idx = 0;
for (i = 0; i < pages; i++) {
/* we need to support large memory configurations */
entry->busaddr[i] = pci_map_page(dev->pdev, entry->pagelist[i],
- 0, PAGE_SIZE, PCI_DMA_TODEVICE);
+ 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
if (entry->busaddr[i] == 0) {
DRM_ERROR("unable to map PCIGART pages!\n");
drm_ati_pcigart_cleanup(dev, gart_info);
@@ -149,19 +156,26 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *ga
page_base = (u32) entry->busaddr[i];
for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
+ u32 val;
+
switch(gart_info->gart_reg_if) {
case DRM_ATI_GART_IGP:
- *pci_gart = cpu_to_le32((page_base) | 0xc);
+ val = page_base | 0xc;
break;
case DRM_ATI_GART_PCIE:
- *pci_gart = cpu_to_le32((page_base >> 8) | 0xc);
+ val = (page_base >> 8) | 0xc;
break;
default:
case DRM_ATI_GART_PCI:
- *pci_gart = cpu_to_le32(page_base);
+ val = page_base;
break;
}
- pci_gart++;
+ if (gart_info->gart_table_location ==
+ DRM_ATI_GART_MAIN)
+ pci_gart[gart_idx] = cpu_to_le32(val);
+ else
+ DRM_WRITE32(map, gart_idx * sizeof(u32), val);
+ gart_idx++;
page_base += ATI_PCIGART_PAGE_SIZE;
}
}