From 43a0ca334e0de9b1eba0dc25f0c901d0e5d02c2c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Timur=20Krist=C3=B3f?= Date: Fri, 7 Nov 2025 16:57:36 +0100 Subject: [PATCH] drm/amdgpu/ttm: Use GART helper to map VRAM pages (v2) MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Use the GART helper function introduced in the previous commit to map the VRAM pages of the transfer window to GART. No functional changes, just code cleanup. Split this into a separate commit to make it easier to bisect, in case there are problems in the future. Signed-off-by: Timur Kristóf Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 9777c5c9cb267..838a51b6098b4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -188,7 +188,6 @@ static int amdgpu_ttm_map_buffer(struct ttm_buffer_object *bo, struct amdgpu_job *job; void *cpu_addr; uint64_t flags; - unsigned int i; int r; BUG_ON(adev->mman.buffer_funcs->copy_max_bytes < @@ -255,16 +254,9 @@ static int amdgpu_ttm_map_buffer(struct ttm_buffer_object *bo, dma_addr = &bo->ttm->dma_address[mm_cur->start >> PAGE_SHIFT]; amdgpu_gart_map(adev, 0, num_pages, dma_addr, flags, cpu_addr); } else { - dma_addr_t dma_address; - - dma_address = mm_cur->start; - dma_address += adev->vm_manager.vram_base_offset; + u64 pa = mm_cur->start + adev->vm_manager.vram_base_offset; - for (i = 0; i < num_pages; ++i) { - amdgpu_gart_map(adev, i << PAGE_SHIFT, 1, &dma_address, - flags, cpu_addr); - dma_address += PAGE_SIZE; - } + amdgpu_gart_map_vram_range(adev, pa, 0, num_pages, flags, cpu_addr); } dma_fence_put(amdgpu_job_submit(job)); -- 2.47.3