diff options
| author | Christian König <christian.koenig@amd.com> | 2018-02-22 10:35:11 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-27 07:09:36 +0300 |
| commit | 92e71b0676447fff40c1e747b2585a9d11c5fca2 (patch) | |
| tree | 351d0a81482fb3a97543f90c74069aad35739b74 /drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | |
| parent | a02497b73218f10f237d98fb10d34d0baed607a0 (diff) | |
| download | linux-92e71b0676447fff40c1e747b2585a9d11c5fca2.tar.xz | |
drm/amdgpu: use the TTM dummy page instead of allocating one
We have a global dummy page in TTM, use that one instead of allocating a
new one.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c index 008eaee57114..137145dd14a9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c @@ -68,17 +68,15 @@ */ static int amdgpu_gart_dummy_page_init(struct amdgpu_device *adev) { - if (adev->dummy_page.page) + struct page *dummy_page = adev->mman.bdev.glob->dummy_read_page; + + if (adev->dummy_page_addr) return 0; - adev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO); - if (adev->dummy_page.page == NULL) - return -ENOMEM; - adev->dummy_page.addr = pci_map_page(adev->pdev, adev->dummy_page.page, - 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); - if (pci_dma_mapping_error(adev->pdev, adev->dummy_page.addr)) { + adev->dummy_page_addr = pci_map_page(adev->pdev, dummy_page, 0, + PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(adev->pdev, adev->dummy_page_addr)) { dev_err(&adev->pdev->dev, "Failed to DMA MAP the dummy page\n"); - __free_page(adev->dummy_page.page); - adev->dummy_page.page = NULL; + adev->dummy_page_addr = 0; return -ENOMEM; } return 0; @@ -93,12 +91,11 @@ static int amdgpu_gart_dummy_page_init(struct amdgpu_device *adev) */ static void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev) { - if (adev->dummy_page.page == NULL) + if (!adev->dummy_page_addr) return; - pci_unmap_page(adev->pdev, adev->dummy_page.addr, - PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); - __free_page(adev->dummy_page.page); - adev->dummy_page.page = NULL; + pci_unmap_page(adev->pdev, adev->dummy_page_addr, + PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + adev->dummy_page_addr = 0; } /** @@ -236,7 +233,7 @@ int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS adev->gart.pages[p] = NULL; #endif - page_base = adev->dummy_page.addr; + page_base = adev->dummy_page_addr; if (!adev->gart.ptr) continue; @@ -347,7 +344,7 @@ int amdgpu_gart_init(struct amdgpu_device *adev) { int r; - if (adev->dummy_page.page) + if (adev->dummy_page_addr) return 0; /* We need PAGE_SIZE >= AMDGPU_GPU_PAGE_SIZE */ |