From 8892f153c83e521aff2ee7ac620856e2983cd7a0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Wed, 17 Aug 2016 10:46:52 +0200 Subject: [PATCH] drm/amdgpu: enable amdgpu_move_blit to handle multiple MM nodes v2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This allows us to move scattered buffers around. v2: fix a couple of typos, handle scattered to scattered moves as well. Signed-off-by: Christian König Reviewed-by: Edward O'Callaghan Tested-by: Mike Lothian Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 118 +++++++++++++++++------- 1 file changed, 85 insertions(+), 33 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index a06cf9988912..1427c40c70bb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -260,64 +260,116 @@ static void amdgpu_move_null(struct ttm_buffer_object *bo, new_mem->mm_node = NULL; } -static int amdgpu_move_blit(struct ttm_buffer_object *bo, - bool evict, bool no_wait_gpu, - struct ttm_mem_reg *new_mem, - struct ttm_mem_reg *old_mem) +static int amdgpu_mm_node_addr(struct ttm_buffer_object *bo, + struct drm_mm_node *mm_node, + struct ttm_mem_reg *mem, + uint64_t *addr) { - struct amdgpu_device *adev; - struct amdgpu_ring *ring; - uint64_t old_start, new_start; - struct fence *fence; int r; - adev = amdgpu_get_adev(bo->bdev); - ring = adev->mman.buffer_funcs_ring; - - switch (old_mem->mem_type) { + switch (mem->mem_type) { case TTM_PL_TT: - r = amdgpu_ttm_bind(bo, old_mem); + r = amdgpu_ttm_bind(bo, mem); if (r) return r; case TTM_PL_VRAM: - old_start = (u64)old_mem->start << PAGE_SHIFT; - old_start += bo->bdev->man[old_mem->mem_type].gpu_offset; + *addr = mm_node->start << PAGE_SHIFT; + *addr += bo->bdev->man[mem->mem_type].gpu_offset; break; default: - DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); + DRM_ERROR("Unknown placement %d\n", mem->mem_type); return -EINVAL; } - switch (new_mem->mem_type) { - case TTM_PL_TT: - r = amdgpu_ttm_bind(bo, new_mem); - if (r) - return r; - case TTM_PL_VRAM: - new_start = (u64)new_mem->start << PAGE_SHIFT; - new_start += bo->bdev->man[new_mem->mem_type].gpu_offset; - break; - default: - DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); - return -EINVAL; - } + return 0; +} + +static int amdgpu_move_blit(struct ttm_buffer_object *bo, + bool evict, bool no_wait_gpu, + struct ttm_mem_reg *new_mem, + struct ttm_mem_reg *old_mem) +{ + struct amdgpu_device *adev = amdgpu_get_adev(bo->bdev); + struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring; + + struct drm_mm_node *old_mm, *new_mm; + uint64_t old_start, old_size, new_start, new_size; + unsigned long num_pages; + struct fence *fence = NULL; + int r; + + BUILD_BUG_ON((PAGE_SIZE % AMDGPU_GPU_PAGE_SIZE) != 0); + if (!ring->ready) { DRM_ERROR("Trying to move memory with ring turned off.\n"); return -EINVAL; } - BUILD_BUG_ON((PAGE_SIZE % AMDGPU_GPU_PAGE_SIZE) != 0); + old_mm = old_mem->mm_node; + r = amdgpu_mm_node_addr(bo, old_mm, old_mem, &old_start); + if (r) + return r; + old_size = old_mm->size; + - r = amdgpu_copy_buffer(ring, old_start, new_start, - new_mem->num_pages * PAGE_SIZE, /* bytes */ - bo->resv, &fence, false); + new_mm = new_mem->mm_node; + r = amdgpu_mm_node_addr(bo, new_mm, new_mem, &new_start); if (r) return r; + new_size = new_mm->size; + + num_pages = new_mem->num_pages; + while (num_pages) { + unsigned long cur_pages = min(old_size, new_size); + struct fence *next; + + r = amdgpu_copy_buffer(ring, old_start, new_start, + cur_pages * PAGE_SIZE, + bo->resv, &next, false); + if (r) + goto error; + + fence_put(fence); + fence = next; + + num_pages -= cur_pages; + if (!num_pages) + break; + + old_size -= cur_pages; + if (!old_size) { + r = amdgpu_mm_node_addr(bo, ++old_mm, old_mem, + &old_start); + if (r) + goto error; + old_size = old_mm->size; + } else { + old_start += cur_pages * PAGE_SIZE; + } + + new_size -= cur_pages; + if (!new_size) { + r = amdgpu_mm_node_addr(bo, ++new_mm, new_mem, + &new_start); + if (r) + goto error; + + new_size = new_mm->size; + } else { + new_start += cur_pages * PAGE_SIZE; + } + } r = ttm_bo_pipeline_move(bo, fence, evict, new_mem); fence_put(fence); return r; + +error: + if (fence) + fence_wait(fence, false); + fence_put(fence); + return r; } static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo, -- 2.20.1