diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_gart.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_gart.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index e73d56e83fa6..1770d3c07fd0 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -139,6 +139,7 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset, unsigned t; unsigned p; int i, j; + u64 page_base; if (!rdev->gart.ready) { WARN(1, "trying to unbind memory to unitialized GART !\n"); @@ -151,9 +152,11 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset, pci_unmap_page(rdev->pdev, rdev->gart.pages_addr[p], PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); rdev->gart.pages[p] = NULL; - rdev->gart.pages_addr[p] = 0; + rdev->gart.pages_addr[p] = rdev->dummy_page.addr; + page_base = rdev->gart.pages_addr[p]; for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) { - radeon_gart_set_page(rdev, t, 0); + radeon_gart_set_page(rdev, t, page_base); + page_base += RADEON_GPU_PAGE_SIZE; } } } @@ -199,8 +202,26 @@ int radeon_gart_bind(struct radeon_device *rdev, unsigned offset, return 0; } +void radeon_gart_restore(struct radeon_device *rdev) +{ + int i, j, t; + u64 page_base; + + for (i = 0, t = 0; i < rdev->gart.num_cpu_pages; i++) { + page_base = rdev->gart.pages_addr[i]; + for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) { + radeon_gart_set_page(rdev, t, page_base); + page_base += RADEON_GPU_PAGE_SIZE; + } + } + mb(); + radeon_gart_tlb_flush(rdev); +} + int radeon_gart_init(struct radeon_device *rdev) { + int r, i; + if (rdev->gart.pages) { return 0; } @@ -209,6 +230,9 @@ int radeon_gart_init(struct radeon_device *rdev) DRM_ERROR("Page size is smaller than GPU page size!\n"); return -EINVAL; } + r = radeon_dummy_page_init(rdev); + if (r) + return r; /* Compute table size */ rdev->gart.num_cpu_pages = rdev->mc.gtt_size / PAGE_SIZE; rdev->gart.num_gpu_pages = rdev->mc.gtt_size / RADEON_GPU_PAGE_SIZE; @@ -227,6 +251,10 @@ int radeon_gart_init(struct radeon_device *rdev) radeon_gart_fini(rdev); return -ENOMEM; } + /* set GART entry to point to the dummy page by default */ + for (i = 0; i < rdev->gart.num_cpu_pages; i++) { + rdev->gart.pages_addr[i] = rdev->dummy_page.addr; + } return 0; } |