If a BO's dma_data.dma_addr pointer is valid, it means that it is an imported dmabuf BO that has a backing store in VRAM. Therefore, in this case, we need to iterate over its dma_addr array.
v2: - Use a cursor to iterate over the entries in the dma_addr array instead of relying on SG iterator (Matt)
v3: - Since XE_PPGTT_PTE_DM is added to the PTE flags in all cases, remove the bo->is_devmem_external check added in v2
v4: - Drop is_devmem_external and instead rely on bo->dma_data.dma_addr to check for imported VRAM BOs (Matt)
Reviewed-by: Matthew Brost matthew.brost@intel.com Signed-off-by: Vivek Kasireddy vivek.kasireddy@intel.com --- drivers/gpu/drm/xe/xe_pt.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c index a1c88f9a6c76..18f959247e8d 100644 --- a/drivers/gpu/drm/xe/xe_pt.c +++ b/drivers/gpu/drm/xe/xe_pt.c @@ -759,6 +759,10 @@ xe_pt_stage_bind(struct xe_tile *tile, struct xe_vma *vma,
xe_walk.default_vram_pte |= XE_PPGTT_PTE_DM; xe_walk.dma_offset = bo ? vram_region_gpu_offset(bo->ttm.resource) : 0; + + if (bo && bo->dma_data.dma_addr) + xe_walk.dma_offset = 0; + if (!range) xe_bo_assert_held(bo);
@@ -769,6 +773,10 @@ xe_pt_stage_bind(struct xe_tile *tile, struct xe_vma *vma, else if (xe_bo_is_vram(bo) || xe_bo_is_stolen(bo)) xe_res_first(bo->ttm.resource, xe_vma_bo_offset(vma), xe_vma_size(vma), &curs); + else if (bo && bo->dma_data.dma_addr) + xe_res_first_dma(bo->dma_data.dma_addr, + xe_vma_bo_offset(vma), + xe_vma_size(vma), &curs); else xe_res_first_sg(xe_bo_sg(bo), xe_vma_bo_offset(vma), xe_vma_size(vma), &curs);