diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 75 |
1 files changed, 56 insertions, 19 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c index 902e6015abca..f4370081f6e6 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c @@ -55,6 +55,7 @@ /* * Common GART table functions. */ + /** * amdgpu_gart_table_ram_alloc - allocate system ram for gart page table * @@ -131,7 +132,7 @@ int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev) PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM, AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED | AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS, - NULL, NULL, &adev->gart.robj); + NULL, NULL, 0, &adev->gart.robj); if (r) { return r; } @@ -224,8 +225,9 @@ void amdgpu_gart_table_vram_free(struct amdgpu_device *adev) * * Unbinds the requested pages from the gart page table and * replaces them with the dummy page (all asics). + * Returns 0 for success, -EINVAL for failure. */ -void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, +int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, int pages) { unsigned t; @@ -237,7 +239,7 @@ void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, if (!adev->gart.ready) { WARN(1, "trying to unbind memory from uninitialized GART !\n"); - return; + return -EINVAL; } t = offset / AMDGPU_GPU_PAGE_SIZE; @@ -258,6 +260,42 @@ void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, } mb(); amdgpu_gart_flush_gpu_tlb(adev, 0); + return 0; +} + +/** + * amdgpu_gart_map - map dma_addresses into GART entries + * + * @adev: amdgpu_device pointer + * @offset: offset into the GPU's gart aperture + * @pages: number of pages to bind + * @dma_addr: DMA addresses of pages + * + * Map the dma_addresses into GART entries (all asics). + * Returns 0 for success, -EINVAL for failure. + */ +int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset, + int pages, dma_addr_t *dma_addr, uint64_t flags, + void *dst) +{ + uint64_t page_base; + unsigned i, j, t; + + if (!adev->gart.ready) { + WARN(1, "trying to bind memory to uninitialized GART !\n"); + return -EINVAL; + } + + t = offset / AMDGPU_GPU_PAGE_SIZE; + + for (i = 0; i < pages; i++) { + page_base = dma_addr[i]; + for (j = 0; j < (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE); j++, t++) { + amdgpu_gart_set_pte_pde(adev, dst, t, page_base, flags); + page_base += AMDGPU_GPU_PAGE_SIZE; + } + } + return 0; } /** @@ -277,31 +315,30 @@ int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset, int pages, struct page **pagelist, dma_addr_t *dma_addr, uint64_t flags) { - unsigned t; - unsigned p; - uint64_t page_base; - int i, j; +#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS + unsigned i,t,p; +#endif + int r; if (!adev->gart.ready) { WARN(1, "trying to bind memory to uninitialized GART !\n"); return -EINVAL; } +#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS t = offset / AMDGPU_GPU_PAGE_SIZE; p = t / (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE); - - for (i = 0; i < pages; i++, p++) { -#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS + for (i = 0; i < pages; i++, p++) adev->gart.pages[p] = pagelist[i]; #endif - if (adev->gart.ptr) { - page_base = dma_addr[i]; - for (j = 0; j < (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE); j++, t++) { - amdgpu_gart_set_pte_pde(adev, adev->gart.ptr, t, page_base, flags); - page_base += AMDGPU_GPU_PAGE_SIZE; - } - } + + if (adev->gart.ptr) { + r = amdgpu_gart_map(adev, offset, pages, dma_addr, flags, + adev->gart.ptr); + if (r) + return r; } + mb(); amdgpu_gart_flush_gpu_tlb(adev, 0); return 0; @@ -331,8 +368,8 @@ int amdgpu_gart_init(struct amdgpu_device *adev) if (r) return r; /* Compute table size */ - adev->gart.num_cpu_pages = adev->mc.gtt_size / PAGE_SIZE; - adev->gart.num_gpu_pages = adev->mc.gtt_size / AMDGPU_GPU_PAGE_SIZE; + adev->gart.num_cpu_pages = adev->mc.gart_size / PAGE_SIZE; + adev->gart.num_gpu_pages = adev->mc.gart_size / AMDGPU_GPU_PAGE_SIZE; DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n", adev->gart.num_cpu_pages, adev->gart.num_gpu_pages); |