drm/xe/bo: Remove the lock_no_vm()/unlock_no_vm() interface

Apart from asserts, it's essentially the same as
xe_bo_lock()/xe_bo_unlock(), and the usage intentions of this interface
was unclear. Remove it.

v2:
- Update the xe_display subsystem as well.
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230908091716.36984-4-thomas.hellstrom@linux.intel.comSigned-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/tests/xe_bo.c

@@ -143,7 +143,7 @@ static void ccs_test_run_gt(struct xe_device *xe, struct xe_gt *gt,
 	ret = ccs_test_migrate(gt, bo, true, 0ULL, 0ULL, test);
 
 out_unlock:
-	xe_bo_unlock_no_vm(bo);
+	xe_bo_unlock(bo);
 	xe_bo_put(bo);
 }
 

drivers/gpu/drm/xe/tests/xe_dma_buf.c

@@ -147,14 +147,14 @@ static void xe_test_dmabuf_import_same_driver(struct xe_device *xe)
 			int err;
 
 			/* Is everything where we expect it to be? */
-			xe_bo_lock_no_vm(import_bo, NULL);
+			xe_bo_lock(import_bo, false);
 			err = xe_bo_validate(import_bo, NULL, false);
 			if (err && err != -EINTR && err != -ERESTARTSYS)
 				KUNIT_FAIL(test,
 					   "xe_bo_validate() failed with err=%d\n", err);
 
 			check_residency(test, bo, import_bo, dmabuf);
-			xe_bo_unlock_no_vm(import_bo);
+			xe_bo_unlock(import_bo);
 		}
 		drm_gem_object_put(import);
 	} else if (PTR_ERR(import) != -EOPNOTSUPP) {

drivers/gpu/drm/xe/tests/xe_migrate.c

@@ -183,7 +183,7 @@ static void test_copy(struct xe_migrate *m, struct xe_bo *bo,
 
 	xe_bo_vunmap(sysmem);
 out_unlock:
-	xe_bo_unlock_no_vm(sysmem);
+	xe_bo_unlock(sysmem);
 	xe_bo_put(sysmem);
 }
 

drivers/gpu/drm/xe/xe_bo.h

@@ -173,25 +173,6 @@ static inline void xe_bo_unlock_vm_held(struct xe_bo *bo)
 	}
 }
 
-static inline void xe_bo_lock_no_vm(struct xe_bo *bo,
-				    struct ww_acquire_ctx *ctx)
-{
-	if (bo) {
-		XE_WARN_ON(bo->vm || (bo->ttm.type != ttm_bo_type_sg &&
-				      bo->ttm.base.resv != &bo->ttm.base._resv));
-		dma_resv_lock(bo->ttm.base.resv, ctx);
-	}
-}
-
-static inline void xe_bo_unlock_no_vm(struct xe_bo *bo)
-{
-	if (bo) {
-		XE_WARN_ON(bo->vm || (bo->ttm.type != ttm_bo_type_sg &&
-				      bo->ttm.base.resv != &bo->ttm.base._resv));
-		dma_resv_unlock(bo->ttm.base.resv);
-	}
-}
-
 int xe_bo_pin_external(struct xe_bo *bo);
 int xe_bo_pin(struct xe_bo *bo);
 void xe_bo_unpin_external(struct xe_bo *bo);
@@ -206,9 +187,9 @@ static inline bool xe_bo_is_pinned(struct xe_bo *bo)
 static inline void xe_bo_unpin_map_no_vm(struct xe_bo *bo)
 {
 	if (likely(bo)) {
-		xe_bo_lock_no_vm(bo, NULL);
+		xe_bo_lock(bo, false);
 		xe_bo_unpin(bo);
-		xe_bo_unlock_no_vm(bo);
+		xe_bo_unlock(bo);
 
 		xe_bo_put(bo);
 	}

drivers/gpu/drm/xe/xe_dma_buf.c

@@ -150,9 +150,10 @@ static int xe_dma_buf_begin_cpu_access(struct dma_buf *dma_buf,
 	if (!reads)
 		return 0;
 
-	xe_bo_lock_no_vm(bo, NULL);
+	/* Can we do interruptible lock here? */
+	xe_bo_lock(bo, false);
 	(void)xe_bo_migrate(bo, XE_PL_TT);
-	xe_bo_unlock_no_vm(bo);
+	xe_bo_unlock(bo);
 
 	return 0;
 }

drivers/gpu/drm/xe/xe_lrc.c

@@ -790,15 +790,9 @@ int xe_lrc_init(struct xe_lrc *lrc, struct xe_hw_engine *hwe,
 void xe_lrc_finish(struct xe_lrc *lrc)
 {
 	xe_hw_fence_ctx_finish(&lrc->fence_ctx);
-	if (lrc->bo->vm)
-		xe_vm_lock(lrc->bo->vm, false);
-	else
-		xe_bo_lock_no_vm(lrc->bo, NULL);
+	xe_bo_lock(lrc->bo, false);
 	xe_bo_unpin(lrc->bo);
-	if (lrc->bo->vm)
-		xe_vm_unlock(lrc->bo->vm);
-	else
-		xe_bo_unlock_no_vm(lrc->bo);
+	xe_bo_unlock(lrc->bo);
 	xe_bo_put(lrc->bo);
 }