From 7d08df5d0bd3d12d14dcec773fcddbe3eed3a8e8 Mon Sep 17 00:00:00 2001 From: Matthew Brost Date: Tue, 26 Nov 2024 09:46:09 -0800 Subject: drm/ttm: Add ttm_bo_access MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Non-contiguous VRAM cannot easily be mapped in TTM nor can non-visible VRAM easily be accessed. Add ttm_bo_access, which is similar to ttm_bo_vm_access, to access such memory. v4: - Fix checkpatch warnings (CI) v5: - Fix checkpatch warnings (CI) v6: - Fix kernel doc (Auld) v7: - Move ttm_bo_access to ttm_bo_vm.c (Christian) Cc: Christian König Reported-by: Christoph Manszewski Suggested-by: Thomas Hellström Signed-off-by: Matthew Brost Tested-by: Mika Kuoppala Reviewed-by: Matthew Auld Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20241126174615.2665852-3-matthew.brost@intel.com --- include/drm/ttm/ttm_bo.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/drm') diff --git a/include/drm/ttm/ttm_bo.h b/include/drm/ttm/ttm_bo.h index 5804408815be..8ea11cd8df39 100644 --- a/include/drm/ttm/ttm_bo.h +++ b/include/drm/ttm/ttm_bo.h @@ -421,6 +421,8 @@ void ttm_bo_unpin(struct ttm_buffer_object *bo); int ttm_bo_evict_first(struct ttm_device *bdev, struct ttm_resource_manager *man, struct ttm_operation_ctx *ctx); +int ttm_bo_access(struct ttm_buffer_object *bo, unsigned long offset, + void *buf, int len, int write); vm_fault_t ttm_bo_vm_reserve(struct ttm_buffer_object *bo, struct vm_fault *vmf); vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, -- cgit v1.2.3