drm/amdgpu: move amdgpu_cs_sysvm_access_required into find_mapping

When we need to find the mapping we need sysvm access anyway.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NLeo Liu <leo.liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -179,6 +179,7 @@ struct amdgpu_job;
 struct amdgpu_irq_src;
 struct amdgpu_fpriv;
 struct amdgpu_mn;
+struct amdgpu_bo_va_mapping;
 
 enum amdgpu_cp_irq {
 	AMDGPU_CP_IRQ_GFX_EOP = 0,
@@ -1900,10 +1901,9 @@ static inline int amdgpu_acpi_init(struct amdgpu_device *adev) { return 0; }
 static inline void amdgpu_acpi_fini(struct amdgpu_device *adev) { }
 #endif
 
-struct amdgpu_bo_va_mapping *
-amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
-		       uint64_t addr, struct amdgpu_bo **bo);
-int amdgpu_cs_sysvm_access_required(struct amdgpu_cs_parser *parser);
+int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
+			   uint64_t addr, struct amdgpu_bo **bo,
+			   struct amdgpu_bo_va_mapping **mapping);
 
 #include "amdgpu_object.h"
 #endif

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

@@ -921,11 +921,11 @@ static int amdgpu_cs_ib_fill(struct amdgpu_device *adev,
 			uint64_t offset;
 			uint8_t *kptr;
 
-			m = amdgpu_cs_find_mapping(parser, chunk_ib->va_start,
-						   &aobj);
-			if (!aobj) {
+			r = amdgpu_cs_find_mapping(parser, chunk_ib->va_start,
+						   &aobj, &m);
+			if (r) {
 				DRM_ERROR("IB va_start is invalid\n");
-				return -EINVAL;
+				return r;
 			}
 
 			if ((chunk_ib->va_start + chunk_ib->ib_bytes) >
@@ -1475,15 +1475,16 @@ int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
  * virtual memory address. Returns allocation structure when found, NULL
  * otherwise.
  */
-struct amdgpu_bo_va_mapping *
-amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
-		       uint64_t addr, struct amdgpu_bo **bo)
+int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
+			   uint64_t addr, struct amdgpu_bo **bo,
+			   struct amdgpu_bo_va_mapping **map)
 {
 	struct amdgpu_bo_va_mapping *mapping;
 	unsigned i;
+	int r;
 
 	if (!parser->bo_list)
-		return NULL;
+		return 0;
 
 	addr /= AMDGPU_GPU_PAGE_SIZE;
 
@@ -1500,7 +1501,8 @@ amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
 				continue;
 
 			*bo = lobj->bo_va->base.bo;
-			return mapping;
+			*map = mapping;
+			goto found;
 		}
 
 		list_for_each_entry(mapping, &lobj->bo_va->invalids, list) {
@@ -1509,44 +1511,22 @@ amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
 				continue;
 
 			*bo = lobj->bo_va->base.bo;
-			return mapping;
+			*map = mapping;
+			goto found;
 		}
 	}
 
-	return NULL;
-}
+	return -EINVAL;
 
-/**
- * amdgpu_cs_sysvm_access_required - make BOs accessible by the system VM
- *
- * @parser: command submission parser context
- *
- * Helper for UVD/VCE VM emulation, make sure BOs are accessible by the system VM.
- */
-int amdgpu_cs_sysvm_access_required(struct amdgpu_cs_parser *parser)
-{
-	unsigned i;
-	int r;
+found:
+	r = amdgpu_ttm_bind(&(*bo)->tbo, &(*bo)->tbo.mem);
+	if (unlikely(r))
+		return r;
 
-	if (!parser->bo_list)
+	if ((*bo)->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
 		return 0;
 
-	for (i = 0; i < parser->bo_list->num_entries; i++) {
-		struct amdgpu_bo *bo = parser->bo_list->array[i].robj;
-
-		r = amdgpu_ttm_bind(&bo->tbo, &bo->tbo.mem);
-		if (unlikely(r))
-			return r;
-
-		if (bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
-			continue;
-
-		bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
-		amdgpu_ttm_placement_from_domain(bo, bo->allowed_domains);
-		r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
-		if (unlikely(r))
-			return r;
-	}
-
-	return 0;
+	(*bo)->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
+	amdgpu_ttm_placement_from_domain(*bo, (*bo)->allowed_domains);
+	return ttm_bo_validate(&(*bo)->tbo, &(*bo)->placement, false, false);
 }

drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c

@@ -410,10 +410,10 @@ static int amdgpu_uvd_cs_pass1(struct amdgpu_uvd_cs_ctx *ctx)
 	uint64_t addr = amdgpu_uvd_get_addr_from_ctx(ctx);
 	int r = 0;
 
-	mapping = amdgpu_cs_find_mapping(ctx->parser, addr, &bo);
-	if (mapping == NULL) {
+	r = amdgpu_cs_find_mapping(ctx->parser, addr, &bo, &mapping);
+	if (r) {
 		DRM_ERROR("Can't find BO for addr 0x%08Lx\n", addr);
-		return -EINVAL;
+		return r;
 	}
 
 	if (!ctx->parser->adev->uvd.address_64_bit) {
@@ -737,10 +737,10 @@ static int amdgpu_uvd_cs_pass2(struct amdgpu_uvd_cs_ctx *ctx)
 	uint64_t addr = amdgpu_uvd_get_addr_from_ctx(ctx);
 	int r;
 
-	mapping = amdgpu_cs_find_mapping(ctx->parser, addr, &bo);
-	if (mapping == NULL) {
+	r = amdgpu_cs_find_mapping(ctx->parser, addr, &bo, &mapping);
+	if (r) {
 		DRM_ERROR("Can't find BO for addr 0x%08Lx\n", addr);
-		return -EINVAL;
+		return r;
 	}
 
 	start = amdgpu_bo_gpu_offset(bo);
@@ -917,10 +917,6 @@ int amdgpu_uvd_ring_parse_cs(struct amdgpu_cs_parser *parser, uint32_t ib_idx)
 		return -EINVAL;
 	}
 
-	r = amdgpu_cs_sysvm_access_required(parser);
-	if (r)
-		return r;
-
 	ctx.parser = parser;
 	ctx.buf_sizes = buf_sizes;
 	ctx.ib_idx = ib_idx;

drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c

@@ -559,6 +559,7 @@ static int amdgpu_vce_cs_reloc(struct amdgpu_cs_parser *p, uint32_t ib_idx,
 	struct amdgpu_bo_va_mapping *mapping;
 	struct amdgpu_bo *bo;
 	uint64_t addr;
+	int r;
 
 	if (index == 0xffffffff)
 		index = 0;
@@ -567,11 +568,11 @@ static int amdgpu_vce_cs_reloc(struct amdgpu_cs_parser *p, uint32_t ib_idx,
 	       ((uint64_t)amdgpu_get_ib_value(p, ib_idx, hi)) << 32;
 	addr += ((uint64_t)size) * ((uint64_t)index);
 
-	mapping = amdgpu_cs_find_mapping(p, addr, &bo);
-	if (mapping == NULL) {
+	r = amdgpu_cs_find_mapping(p, addr, &bo, &mapping);
+	if (r) {
 		DRM_ERROR("Can't find BO for addr 0x%010Lx %d %d %d %d\n",
 			  addr, lo, hi, size, index);
-		return -EINVAL;
+		return r;
 	}
 
 	if ((addr + (uint64_t)size) >
@@ -652,10 +653,6 @@ int amdgpu_vce_ring_parse_cs(struct amdgpu_cs_parser *p, uint32_t ib_idx)
 	p->job->vm = NULL;
 	ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);
 
-	r = amdgpu_cs_sysvm_access_required(p);
-	if (r)
-		return r;
-
 	while (idx < ib->length_dw) {
 		uint32_t len = amdgpu_get_ib_value(p, ib_idx, idx);
 		uint32_t cmd = amdgpu_get_ib_value(p, ib_idx, idx + 1);