drm/ttm: nuke memory type flags

It's not supported to specify more than one of those flags.
So it never made sense to make this a flag in the first place.

Nuke the flags and specify directly which memory type to use.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/389826/?series=81551&rev=1

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

@@ -136,8 +136,8 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
 
 		places[c].fpfn = 0;
 		places[c].lpfn = 0;
-		places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
-			TTM_PL_FLAG_VRAM;
+		places[c].mem_type = TTM_PL_VRAM;
+		places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED;
 
 		if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
 			places[c].lpfn = visible_pfn;
@@ -152,7 +152,8 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
 	if (domain & AMDGPU_GEM_DOMAIN_GTT) {
 		places[c].fpfn = 0;
 		places[c].lpfn = 0;
-		places[c].flags = TTM_PL_FLAG_TT;
+		places[c].mem_type = TTM_PL_TT;
+		places[c].flags = 0;
 		if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 			places[c].flags |= TTM_PL_FLAG_WC |
 				TTM_PL_FLAG_UNCACHED;
@@ -164,7 +165,8 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
 	if (domain & AMDGPU_GEM_DOMAIN_CPU) {
 		places[c].fpfn = 0;
 		places[c].lpfn = 0;
-		places[c].flags = TTM_PL_FLAG_SYSTEM;
+		places[c].mem_type = TTM_PL_SYSTEM;
+		places[c].flags = 0;
 		if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
 			places[c].flags |= TTM_PL_FLAG_WC |
 				TTM_PL_FLAG_UNCACHED;
@@ -176,28 +178,32 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
 	if (domain & AMDGPU_GEM_DOMAIN_GDS) {
 		places[c].fpfn = 0;
 		places[c].lpfn = 0;
-		places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GDS;
+		places[c].mem_type = AMDGPU_PL_GDS;
+		places[c].flags = TTM_PL_FLAG_UNCACHED;
 		c++;
 	}
 
 	if (domain & AMDGPU_GEM_DOMAIN_GWS) {
 		places[c].fpfn = 0;
 		places[c].lpfn = 0;
-		places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GWS;
+		places[c].mem_type = AMDGPU_PL_GWS;
+		places[c].flags = TTM_PL_FLAG_UNCACHED;
 		c++;
 	}
 
 	if (domain & AMDGPU_GEM_DOMAIN_OA) {
 		places[c].fpfn = 0;
 		places[c].lpfn = 0;
-		places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_OA;
+		places[c].mem_type = AMDGPU_PL_OA;
+		places[c].flags = TTM_PL_FLAG_UNCACHED;
 		c++;
 	}
 
 	if (!c) {
 		places[c].fpfn = 0;
 		places[c].lpfn = 0;
-		places[c].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
+		places[c].mem_type = TTM_PL_SYSTEM;
+		places[c].flags = TTM_PL_MASK_CACHING;
 		c++;
 	}
 
@@ -591,7 +597,7 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
 		amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved, 0);
 
 	if (bp->flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
-	    bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {
+	    bo->tbo.mem.mem_type == TTM_PL_VRAM) {
 		struct dma_fence *fence;
 
 		r = amdgpu_fill_buffer(bo, 0, bo->tbo.base.resv, &fence);

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

@@ -88,7 +88,8 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
 	static const struct ttm_place placements = {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
+		.mem_type = TTM_PL_SYSTEM,
+		.flags = TTM_PL_MASK_CACHING
 	};
 
 	/* Don't handle scatter gather BOs */
@@ -533,7 +534,8 @@ static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo, bool evict,
 	placement.busy_placement = &placements;
 	placements.fpfn = 0;
 	placements.lpfn = 0;
-	placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
+	placements.mem_type = TTM_PL_TT;
+	placements.flags = TTM_PL_MASK_CACHING;
 	r = ttm_bo_mem_space(bo, &placement, &tmp_mem, ctx);
 	if (unlikely(r)) {
 		pr_err("Failed to find GTT space for blit from VRAM\n");
@@ -589,7 +591,8 @@ static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo, bool evict,
 	placement.busy_placement = &placements;
 	placements.fpfn = 0;
 	placements.lpfn = 0;
-	placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
+	placements.mem_type = TTM_PL_TT;
+	placements.flags = TTM_PL_MASK_CACHING;
 	r = ttm_bo_mem_space(bo, &placement, &tmp_mem, ctx);
 	if (unlikely(r)) {
 		pr_err("Failed to find GTT space for blit to VRAM\n");
@@ -1171,8 +1174,8 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
 		placement.busy_placement = &placements;
 		placements.fpfn = 0;
 		placements.lpfn = adev->gmc.gart_size >> PAGE_SHIFT;
-		placements.flags = (bo->mem.placement & ~TTM_PL_MASK_MEM) |
-			TTM_PL_FLAG_TT;
+		placements.mem_type = TTM_PL_TT;
+		placements.flags = bo->mem.placement;
 
 		r = ttm_bo_mem_space(bo, &placement, &tmp, &ctx);
 		if (unlikely(r))

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

@@ -32,10 +32,6 @@
 #define AMDGPU_PL_GWS		(TTM_PL_PRIV + 1)
 #define AMDGPU_PL_OA		(TTM_PL_PRIV + 2)
 
-#define AMDGPU_PL_FLAG_GDS		(TTM_PL_FLAG_PRIV << 0)
-#define AMDGPU_PL_FLAG_GWS		(TTM_PL_FLAG_PRIV << 1)
-#define AMDGPU_PL_FLAG_OA		(TTM_PL_FLAG_PRIV << 2)
-
 #define AMDGPU_GTT_MAX_TRANSFER_SIZE	512
 #define AMDGPU_GTT_NUM_TRANSFER_WINDOWS	2
 

drivers/gpu/drm/drm_gem_vram_helper.c

@@ -145,21 +145,18 @@ static void drm_gem_vram_placement(struct drm_gem_vram_object *gbo,
 	gbo->placement.placement = gbo->placements;
 	gbo->placement.busy_placement = gbo->placements;
 
-	if (pl_flag & DRM_GEM_VRAM_PL_FLAG_VRAM)
+	if (pl_flag & DRM_GEM_VRAM_PL_FLAG_VRAM) {
+		gbo->placements[c].mem_type = TTM_PL_VRAM;
 		gbo->placements[c++].flags = TTM_PL_FLAG_WC |
 					     TTM_PL_FLAG_UNCACHED |
-					     TTM_PL_FLAG_VRAM |
-					     invariant_flags;
-
-	if (pl_flag & DRM_GEM_VRAM_PL_FLAG_SYSTEM)
-		gbo->placements[c++].flags = TTM_PL_MASK_CACHING |
-					     TTM_PL_FLAG_SYSTEM |
 					     invariant_flags;
+	}
 
-	if (!c)
+	if (pl_flag & DRM_GEM_VRAM_PL_FLAG_SYSTEM || !c) {
+		gbo->placements[c].mem_type = TTM_PL_SYSTEM;
 		gbo->placements[c++].flags = TTM_PL_MASK_CACHING |
-					     TTM_PL_FLAG_SYSTEM |
 					     invariant_flags;
+	}
 
 	gbo->placement.num_placement = c;
 	gbo->placement.num_busy_placement = c;

drivers/gpu/drm/nouveau/nouveau_bo.c

@@ -345,12 +345,18 @@ set_placement_list(struct ttm_place *pl, unsigned *n, uint32_t domain,
 {
 	*n = 0;
 
-	if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
-		pl[(*n)++].flags = TTM_PL_FLAG_VRAM | flags;
-	if (domain & NOUVEAU_GEM_DOMAIN_GART)
-		pl[(*n)++].flags = TTM_PL_FLAG_TT | flags;
-	if (domain & NOUVEAU_GEM_DOMAIN_CPU)
-		pl[(*n)++].flags = TTM_PL_FLAG_SYSTEM | flags;
+	if (domain & NOUVEAU_GEM_DOMAIN_VRAM) {
+		pl[*n].mem_type = TTM_PL_VRAM;
+		pl[(*n)++].flags = flags;
+	}
+	if (domain & NOUVEAU_GEM_DOMAIN_GART) {
+		pl[*n].mem_type = TTM_PL_TT;
+		pl[(*n)++].flags = flags;
+	}
+	if (domain & NOUVEAU_GEM_DOMAIN_CPU) {
+		pl[*n].mem_type = TTM_PL_SYSTEM;
+		pl[(*n)++].flags = flags;
+	}
 }
 
 static void
@@ -882,7 +888,8 @@ nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
 	struct ttm_place placement_memtype = {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING
+		.mem_type = TTM_PL_TT,
+		.flags = TTM_PL_MASK_CACHING
 	};
 	struct ttm_placement placement;
 	struct ttm_resource tmp_reg;
@@ -919,7 +926,8 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
 	struct ttm_place placement_memtype = {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING
+		.mem_type = TTM_PL_TT,
+		.flags = TTM_PL_MASK_CACHING
 	};
 	struct ttm_placement placement;
 	struct ttm_resource tmp_reg;

drivers/gpu/drm/qxl/qxl_object.c

@@ -64,16 +64,24 @@ void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned)
 
 	qbo->placement.placement = qbo->placements;
 	qbo->placement.busy_placement = qbo->placements;
-	if (domain == QXL_GEM_DOMAIN_VRAM)
-		qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag;
+	if (domain == QXL_GEM_DOMAIN_VRAM) {
+		qbo->placements[c].mem_type = TTM_PL_VRAM;
+		qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | pflag;
+	}
 	if (domain == QXL_GEM_DOMAIN_SURFACE) {
-		qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV | pflag;
-		qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag;
+		qbo->placements[c].mem_type = TTM_PL_PRIV;
+		qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | pflag;
+		qbo->placements[c].mem_type = TTM_PL_VRAM;
+		qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | pflag;
+	}
+	if (domain == QXL_GEM_DOMAIN_CPU) {
+		qbo->placements[c].mem_type = TTM_PL_SYSTEM;
+		qbo->placements[c++].flags = TTM_PL_MASK_CACHING | pflag;
+	}
+	if (!c) {
+		qbo->placements[c].mem_type = TTM_PL_SYSTEM;
+		qbo->placements[c++].flags = TTM_PL_MASK_CACHING;
 	}
-	if (domain == QXL_GEM_DOMAIN_CPU)
-		qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | pflag;
-	if (!c)
-		qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
 	qbo->placement.num_placement = c;
 	qbo->placement.num_busy_placement = c;
 	for (i = 0; i < c; ++i) {

drivers/gpu/drm/qxl/qxl_ttm.c

@@ -55,7 +55,8 @@ static void qxl_evict_flags(struct ttm_buffer_object *bo,
 	static const struct ttm_place placements = {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
+		.mem_type = TTM_PL_SYSTEM,
+		.flags = TTM_PL_MASK_CACHING
 	};
 
 	if (!qxl_ttm_bo_is_qxl_bo(bo)) {

drivers/gpu/drm/radeon/radeon_object.c

@@ -112,58 +112,58 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
 		    rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size) {
 			rbo->placements[c].fpfn =
 				rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
+			rbo->placements[c].mem_type = TTM_PL_VRAM;
 			rbo->placements[c++].flags = TTM_PL_FLAG_WC |
-						     TTM_PL_FLAG_UNCACHED |
-						     TTM_PL_FLAG_VRAM;
+						     TTM_PL_FLAG_UNCACHED;
 		}
 
 		rbo->placements[c].fpfn = 0;
+		rbo->placements[c].mem_type = TTM_PL_VRAM;
 		rbo->placements[c++].flags = TTM_PL_FLAG_WC |
-					     TTM_PL_FLAG_UNCACHED |
-					     TTM_PL_FLAG_VRAM;
+					     TTM_PL_FLAG_UNCACHED;
 	}
 
 	if (domain & RADEON_GEM_DOMAIN_GTT) {
 		if (rbo->flags & RADEON_GEM_GTT_UC) {
 			rbo->placements[c].fpfn = 0;
-			rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED |
-				TTM_PL_FLAG_TT;
+			rbo->placements[c].mem_type = TTM_PL_TT;
+			rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED;
 
 		} else if ((rbo->flags & RADEON_GEM_GTT_WC) ||
 			   (rbo->rdev->flags & RADEON_IS_AGP)) {
 			rbo->placements[c].fpfn = 0;
+			rbo->placements[c].mem_type = TTM_PL_TT;
 			rbo->placements[c++].flags = TTM_PL_FLAG_WC |
-				TTM_PL_FLAG_UNCACHED |
-				TTM_PL_FLAG_TT;
+				TTM_PL_FLAG_UNCACHED;
 		} else {
 			rbo->placements[c].fpfn = 0;
-			rbo->placements[c++].flags = TTM_PL_FLAG_CACHED |
-						     TTM_PL_FLAG_TT;
+			rbo->placements[c].mem_type = TTM_PL_TT;
+			rbo->placements[c++].flags = TTM_PL_FLAG_CACHED;
 		}
 	}
 
 	if (domain & RADEON_GEM_DOMAIN_CPU) {
 		if (rbo->flags & RADEON_GEM_GTT_UC) {
 			rbo->placements[c].fpfn = 0;
-			rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED |
-				TTM_PL_FLAG_SYSTEM;
+			rbo->placements[c].mem_type = TTM_PL_SYSTEM;
+			rbo->placements[c++].flags = TTM_PL_FLAG_UNCACHED;
 
 		} else if ((rbo->flags & RADEON_GEM_GTT_WC) ||
 		    rbo->rdev->flags & RADEON_IS_AGP) {
 			rbo->placements[c].fpfn = 0;
+			rbo->placements[c].mem_type = TTM_PL_SYSTEM;
 			rbo->placements[c++].flags = TTM_PL_FLAG_WC |
-				TTM_PL_FLAG_UNCACHED |
-				TTM_PL_FLAG_SYSTEM;
+				TTM_PL_FLAG_UNCACHED;
 		} else {
 			rbo->placements[c].fpfn = 0;
-			rbo->placements[c++].flags = TTM_PL_FLAG_CACHED |
-						     TTM_PL_FLAG_SYSTEM;
+			rbo->placements[c].mem_type = TTM_PL_SYSTEM;
+			rbo->placements[c++].flags = TTM_PL_FLAG_CACHED;
 		}
 	}
 	if (!c) {
 		rbo->placements[c].fpfn = 0;
-		rbo->placements[c++].flags = TTM_PL_MASK_CACHING |
-					     TTM_PL_FLAG_SYSTEM;
+		rbo->placements[c].mem_type = TTM_PL_SYSTEM;
+		rbo->placements[c++].flags = TTM_PL_MASK_CACHING;
 	}
 
 	rbo->placement.num_placement = c;
@@ -171,7 +171,7 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain)
 
 	for (i = 0; i < c; ++i) {
 		if ((rbo->flags & RADEON_GEM_CPU_ACCESS) &&
-		    (rbo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
+		    (rbo->placements[i].mem_type == TTM_PL_VRAM) &&
 		    !rbo->placements[i].fpfn)
 			rbo->placements[i].lpfn =
 				rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
@@ -360,7 +360,7 @@ int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset,
 	radeon_ttm_placement_from_domain(bo, domain);
 	for (i = 0; i < bo->placement.num_placement; i++) {
 		/* force to pin into visible video ram */
-		if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
+		if ((bo->placements[i].mem_type == TTM_PL_VRAM) &&
 		    !(bo->flags & RADEON_GEM_NO_CPU_ACCESS) &&
 		    (!max_offset || max_offset > bo->rdev->mc.visible_vram_size))
 			bo->placements[i].lpfn =
@@ -824,7 +824,7 @@ int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 	lpfn =	rdev->mc.visible_vram_size >> PAGE_SHIFT;
 	for (i = 0; i < rbo->placement.num_placement; i++) {
 		/* Force into visible VRAM */
-		if ((rbo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
+		if ((rbo->placements[i].mem_type == TTM_PL_VRAM) &&
 		    (!rbo->placements[i].lpfn || rbo->placements[i].lpfn > lpfn))
 			rbo->placements[i].lpfn = lpfn;
 	}

drivers/gpu/drm/radeon/radeon_ttm.c

@@ -88,7 +88,8 @@ static void radeon_evict_flags(struct ttm_buffer_object *bo,
 	static const struct ttm_place placements = {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
+		.mem_type = TTM_PL_SYSTEM,
+		.flags = TTM_PL_MASK_CACHING
 	};
 
 	struct radeon_bo *rbo;
@@ -119,7 +120,7 @@ static void radeon_evict_flags(struct ttm_buffer_object *bo,
 							 RADEON_GEM_DOMAIN_GTT);
 			rbo->placement.num_busy_placement = 0;
 			for (i = 0; i < rbo->placement.num_placement; i++) {
-				if (rbo->placements[i].flags & TTM_PL_FLAG_VRAM) {
+				if (rbo->placements[i].mem_type == TTM_PL_VRAM) {
 					if (rbo->placements[i].fpfn < fpfn)
 						rbo->placements[i].fpfn = fpfn;
 				} else {
@@ -224,7 +225,8 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
 	placement.busy_placement = &placements;
 	placements.fpfn = 0;
 	placements.lpfn = 0;
-	placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
+	placements.mem_type = TTM_PL_TT;
+	placements.flags = TTM_PL_MASK_CACHING;
 	r = ttm_bo_mem_space(bo, &placement, &tmp_mem, &ctx);
 	if (unlikely(r)) {
 		return r;
@@ -269,7 +271,8 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
 	placement.busy_placement = &placements;
 	placements.fpfn = 0;
 	placements.lpfn = 0;
-	placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
+	placements.mem_type = TTM_PL_TT;
+	placements.flags = TTM_PL_MASK_CACHING;
 	r = ttm_bo_mem_space(bo, &placement, &tmp_mem, &ctx);
 	if (unlikely(r)) {
 		return r;

drivers/gpu/drm/ttm/ttm_bo.c

@@ -64,34 +64,18 @@ static void ttm_bo_default_destroy(struct ttm_buffer_object *bo)
 	kfree(bo);
 }
 
-static inline int ttm_mem_type_from_place(const struct ttm_place *place,
-					  uint32_t *mem_type)
-{
-	int pos;
-
-	pos = ffs(place->flags & TTM_PL_MASK_MEM);
-	if (unlikely(!pos))
-		return -EINVAL;
-
-	*mem_type = pos - 1;
-	return 0;
-}
-
 static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo,
 					struct ttm_placement *placement)
 {
 	struct drm_printer p = drm_debug_printer(TTM_PFX);
-	int i, ret, mem_type;
 	struct ttm_resource_manager *man;
+	int i, mem_type;
 
 	drm_printf(&p, "No space for %p (%lu pages, %luK, %luM)\n",
 		   bo, bo->mem.num_pages, bo->mem.size >> 10,
 		   bo->mem.size >> 20);
 	for (i = 0; i < placement->num_placement; i++) {
-		ret = ttm_mem_type_from_place(&placement->placement[i],
-						&mem_type);
-		if (ret)
-			return;
+		mem_type = placement->placement[i].mem_type;
 		drm_printf(&p, "  placement[%d]=0x%08X (%d)\n",
 			   i, placement->placement[i].flags, mem_type);
 		man = ttm_manager_type(bo->bdev, mem_type);
@@ -125,12 +109,6 @@ static struct kobj_type ttm_bo_glob_kobj_type  = {
 	.default_attrs = ttm_bo_global_attrs
 };
 
-
-static inline uint32_t ttm_bo_type_flags(unsigned type)
-{
-	return 1 << (type);
-}
-
 static void ttm_bo_add_mem_to_lru(struct ttm_buffer_object *bo,
 				  struct ttm_resource *mem)
 {
@@ -910,25 +888,6 @@ static uint32_t ttm_bo_select_caching(struct ttm_resource_manager *man,
 	return result;
 }
 
-static bool ttm_bo_mt_compatible(struct ttm_resource_manager *man,
-				 uint32_t mem_type,
-				 const struct ttm_place *place,
-				 uint32_t *masked_placement)
-{
-	uint32_t cur_flags = ttm_bo_type_flags(mem_type);
-
-	if ((cur_flags & place->flags & TTM_PL_MASK_MEM) == 0)
-		return false;
-
-	if ((place->flags & man->available_caching) == 0)
-		return false;
-
-	cur_flags |= (place->flags & man->available_caching);
-
-	*masked_placement = cur_flags;
-	return true;
-}
-
 /**
  * ttm_bo_mem_placement - check if placement is compatible
  * @bo: BO to find memory for
@@ -946,30 +905,21 @@ static int ttm_bo_mem_placement(struct ttm_buffer_object *bo,
 				struct ttm_operation_ctx *ctx)
 {
 	struct ttm_bo_device *bdev = bo->bdev;
-	uint32_t mem_type = TTM_PL_SYSTEM;
 	struct ttm_resource_manager *man;
 	uint32_t cur_flags = 0;
-	int ret;
 
-	ret = ttm_mem_type_from_place(place, &mem_type);
-	if (ret)
-		return ret;
-
-	man = ttm_manager_type(bdev, mem_type);
+	man = ttm_manager_type(bdev, place->mem_type);
 	if (!man || !ttm_resource_manager_used(man))
 		return -EBUSY;
 
-	if (!ttm_bo_mt_compatible(man, mem_type, place, &cur_flags))
+	if ((place->flags & man->available_caching) == 0)
 		return -EBUSY;
 
+	cur_flags = place->flags & man->available_caching;
 	cur_flags = ttm_bo_select_caching(man, bo->mem.placement, cur_flags);
-	/*
-	 * Use the access and other non-mapping-related flag bits from
-	 * the memory placement flags to the current flags
-	 */
-	ttm_flag_masked(&cur_flags, place->flags, ~TTM_PL_MASK_MEMTYPE);
+	cur_flags |= place->flags & ~TTM_PL_MASK_CACHING;
 
-	mem->mem_type = mem_type;
+	mem->mem_type = place->mem_type;
 	mem->placement = cur_flags;
 
 	spin_lock(&ttm_bo_glob.lru_lock);
@@ -1006,10 +956,8 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
 		struct ttm_resource_manager *man;
 
 		ret = ttm_bo_mem_placement(bo, place, mem, ctx);
-		if (ret == -EBUSY)
-			continue;
 		if (ret)
-			goto error;
+			continue;
 
 		type_found = true;
 		ret = ttm_resource_alloc(bo, place, mem);
@@ -1034,10 +982,8 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
 		const struct ttm_place *place = &placement->busy_placement[i];
 
 		ret = ttm_bo_mem_placement(bo, place, mem, ctx);
-		if (ret == -EBUSY)
-			continue;
 		if (ret)
-			goto error;
+			continue;
 
 		type_found = true;
 		ret = ttm_bo_mem_force_space(bo, place, mem, ctx);
@@ -1108,7 +1054,7 @@ static bool ttm_bo_places_compat(const struct ttm_place *places,
 
 		*new_flags = heap->flags;
 		if ((*new_flags & mem->placement & TTM_PL_MASK_CACHING) &&
-		    (*new_flags & mem->placement & TTM_PL_MASK_MEM) &&
+		    (mem->mem_type == heap->mem_type) &&
 		    (!(*new_flags & TTM_PL_FLAG_CONTIGUOUS) ||
 		     (mem->placement & TTM_PL_FLAG_CONTIGUOUS)))
 			return true;
@@ -1163,12 +1109,8 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
 		if (ret)
 			return ret;
 	} else {
-		/*
-		 * Use the access and other non-mapping-related flag bits from
-		 * the compatible memory placement flags to the active flags
-		 */
-		ttm_flag_masked(&bo->mem.placement, new_flags,
-				~TTM_PL_MASK_MEMTYPE);
+		bo->mem.placement &= TTM_PL_MASK_CACHING;
+		bo->mem.placement |= new_flags & ~TTM_PL_MASK_CACHING;
 	}
 	/*
 	 * We might need to add a TTM.
@@ -1236,7 +1178,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
 	bo->mem.bus.offset = 0;
 	bo->mem.bus.addr = NULL;
 	bo->moving = NULL;
-	bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED);
+	bo->mem.placement = TTM_PL_FLAG_CACHED;
 	bo->acc_size = acc_size;
 	bo->sg = sg;
 	if (resv) {
@@ -1627,7 +1569,7 @@ int ttm_bo_swapout(struct ttm_bo_global *glob, struct ttm_operation_ctx *ctx)
 
 		evict_mem = bo->mem;
 		evict_mem.mm_node = NULL;
-		evict_mem.placement = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED;
+		evict_mem.placement = TTM_PL_FLAG_CACHED;
 		evict_mem.mem_type = TTM_PL_SYSTEM;
 
 		ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, &ctx);

drivers/gpu/drm/ttm/ttm_bo_util.c

@@ -69,8 +69,6 @@ int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
 
 		ttm_tt_unbind(bo->bdev, ttm);
 		ttm_bo_free_old_node(bo);
-		ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM,
-				TTM_PL_MASK_MEM);
 		old_mem->mem_type = TTM_PL_SYSTEM;
 	}
 

drivers/gpu/drm/vmwgfx/vmwgfx_bo.c

@@ -354,6 +354,7 @@ void vmw_bo_pin_reserved(struct vmw_buffer_object *vbo, bool pin)
 
 	pl.fpfn = 0;
 	pl.lpfn = 0;
+	pl.mem_type = bo->mem.mem_type;
 	pl.flags = bo->mem.placement;
 	if (pin)
 		pl.flags |= TTM_PL_FLAG_NO_EVICT;

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

@@ -82,9 +82,7 @@
 			VMWGFX_NUM_GB_SCREEN_TARGET)
 
 #define VMW_PL_GMR (TTM_PL_PRIV + 0)
-#define VMW_PL_FLAG_GMR (TTM_PL_FLAG_PRIV << 0)
 #define VMW_PL_MOB (TTM_PL_PRIV + 1)
-#define VMW_PL_FLAG_MOB (TTM_PL_FLAG_PRIV << 1)
 
 #define VMW_RES_CONTEXT ttm_driver_type0
 #define VMW_RES_SURFACE ttm_driver_type1

drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c

@@ -33,49 +33,57 @@
 static const struct ttm_place vram_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
+	.mem_type = TTM_PL_VRAM,
+	.flags = TTM_PL_FLAG_CACHED
 };
 
 static const struct ttm_place vram_ne_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
+	.mem_type = TTM_PL_VRAM,
+	.flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
 };
 
 static const struct ttm_place sys_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED
+	.mem_type = TTM_PL_SYSTEM,
+	.flags = TTM_PL_FLAG_CACHED
 };
 
 static const struct ttm_place sys_ne_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
+	.mem_type = TTM_PL_SYSTEM,
+	.flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
 };
 
 static const struct ttm_place gmr_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
+	.mem_type = VMW_PL_GMR,
+	.flags = TTM_PL_FLAG_CACHED
 };
 
 static const struct ttm_place gmr_ne_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
+	.mem_type = VMW_PL_GMR,
+	.flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
 };
 
 static const struct ttm_place mob_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED
+	.mem_type = VMW_PL_MOB,
+	.flags = TTM_PL_FLAG_CACHED
 };
 
 static const struct ttm_place mob_ne_placement_flags = {
 	.fpfn = 0,
 	.lpfn = 0,
-	.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
+	.mem_type = VMW_PL_MOB,
+	.flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
 };
 
 struct ttm_placement vmw_vram_placement = {
@@ -89,11 +97,13 @@ static const struct ttm_place vram_gmr_placement_flags[] = {
 	{
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
+		.mem_type = TTM_PL_VRAM,
+		.flags = TTM_PL_FLAG_CACHED
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
+		.mem_type = VMW_PL_GMR,
+		.flags = TTM_PL_FLAG_CACHED
 	}
 };
 
@@ -101,11 +111,13 @@ static const struct ttm_place gmr_vram_placement_flags[] = {
 	{
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
+		.mem_type = VMW_PL_GMR,
+		.flags = TTM_PL_FLAG_CACHED
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
+		.mem_type = TTM_PL_VRAM,
+		.flags = TTM_PL_FLAG_CACHED
 	}
 };
 
@@ -120,12 +132,14 @@ static const struct ttm_place vram_gmr_ne_placement_flags[] = {
 	{
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED |
+		.mem_type = TTM_PL_VRAM,
+		.flags = TTM_PL_FLAG_CACHED |
 			 TTM_PL_FLAG_NO_EVICT
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED |
+		.mem_type = VMW_PL_GMR,
+		.flags = TTM_PL_FLAG_CACHED |
 			 TTM_PL_FLAG_NO_EVICT
 	}
 };
@@ -169,19 +183,23 @@ static const struct ttm_place evictable_placement_flags[] = {
 	{
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED
+		.mem_type = TTM_PL_SYSTEM,
+		.flags = TTM_PL_FLAG_CACHED
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
+		.mem_type = TTM_PL_VRAM,
+		.flags = TTM_PL_FLAG_CACHED
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
+		.mem_type = VMW_PL_GMR,
+		.flags = TTM_PL_FLAG_CACHED
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED
+		.mem_type = VMW_PL_MOB,
+		.flags = TTM_PL_FLAG_CACHED
 	}
 };
 
@@ -189,15 +207,18 @@ static const struct ttm_place nonfixed_placement_flags[] = {
 	{
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED
+		.mem_type = TTM_PL_SYSTEM,
+		.flags = TTM_PL_FLAG_CACHED
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
+		.mem_type = VMW_PL_GMR,
+		.flags = TTM_PL_FLAG_CACHED
 	}, {
 		.fpfn = 0,
 		.lpfn = 0,
-		.flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED
+		.mem_type = VMW_PL_MOB,
+		.flags = TTM_PL_FLAG_CACHED
 	}
 };
 

include/drm/ttm/ttm_bo_driver.h

@@ -393,23 +393,6 @@ struct ttm_lru_bulk_move {
 	struct ttm_lru_bulk_move_pos swap[TTM_MAX_BO_PRIORITY];
 };
 
-/**
- * ttm_flag_masked
- *
- * @old: Pointer to the result and original value.
- * @new: New value of bits.
- * @mask: Mask of bits to change.
- *
- * Convenience function to change a number of bits identified by a mask.
- */
-
-static inline uint32_t
-ttm_flag_masked(uint32_t *old, uint32_t new, uint32_t mask)
-{
-	*old ^= (*old ^ new) & mask;
-	return *old;
-}
-
 /*
  * ttm_bo.c
  */

include/drm/ttm/ttm_placement.h

@@ -42,12 +42,6 @@
 #define TTM_PL_VRAM             2
 #define TTM_PL_PRIV             3
 
-#define TTM_PL_FLAG_SYSTEM      (1 << TTM_PL_SYSTEM)
-#define TTM_PL_FLAG_TT          (1 << TTM_PL_TT)
-#define TTM_PL_FLAG_VRAM        (1 << TTM_PL_VRAM)
-#define TTM_PL_FLAG_PRIV        (1 << TTM_PL_PRIV)
-#define TTM_PL_MASK_MEM         0x0000FFFF
-
 /*
  * Other flags that affects data placement.
  * TTM_PL_FLAG_CACHED indicates cache-coherent mappings
@@ -71,8 +65,6 @@
 				 TTM_PL_FLAG_UNCACHED | \
 				 TTM_PL_FLAG_WC)
 
-#define TTM_PL_MASK_MEMTYPE     (TTM_PL_MASK_MEM | TTM_PL_MASK_CACHING)
-
 /**
  * struct ttm_place
  *
@@ -85,6 +77,7 @@
 struct ttm_place {
 	unsigned	fpfn;
 	unsigned	lpfn;
+	uint32_t	mem_type;
 	uint32_t	flags;
 };