From e3f202798aaa808e7a38faa8c3a9f0aa93b85cc0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Thu, 3 Jul 2014 09:02:23 +0200
Subject: drm/ttm: fix handling of TTM_PL_FLAG_TOPDOWN v2
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bo->mem.placement is not initialized when ttm_bo_man_get_node is called,
so the flag had no effect at all.

v2: change nouveau and vmwgfx as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index ab0228f..7e185c1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -76,6 +76,7 @@ static int
 nouveau_vram_manager_new(struct ttm_mem_type_manager *man,
 			 struct ttm_buffer_object *bo,
 			 struct ttm_placement *placement,
+			 uint32_t flags,
 			 struct ttm_mem_reg *mem)
 {
 	struct nouveau_drm *drm = nouveau_bdev(man->bdev);
@@ -162,6 +163,7 @@ static int
 nouveau_gart_manager_new(struct ttm_mem_type_manager *man,
 			 struct ttm_buffer_object *bo,
 			 struct ttm_placement *placement,
+			 uint32_t flags,
 			 struct ttm_mem_reg *mem)
 {
 	struct nouveau_drm *drm = nouveau_bdev(bo->bdev);
@@ -242,6 +244,7 @@ static int
 nv04_gart_manager_new(struct ttm_mem_type_manager *man,
 		      struct ttm_buffer_object *bo,
 		      struct ttm_placement *placement,
+		      uint32_t flags,
 		      struct ttm_mem_reg *mem)
 {
 	struct nouveau_mem *node;
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 4ab9f71..a13a100 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -784,7 +784,7 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo,
 	int ret;
 
 	do {
-		ret = (*man->func->get_node)(man, bo, placement, mem);
+		ret = (*man->func->get_node)(man, bo, placement, 0, mem);
 		if (unlikely(ret != 0))
 			return ret;
 		if (mem->mm_node)
@@ -897,7 +897,8 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
 
 		if (man->has_type && man->use_type) {
 			type_found = true;
-			ret = (*man->func->get_node)(man, bo, placement, mem);
+			ret = (*man->func->get_node)(man, bo, placement,
+						     cur_flags, mem);
 			if (unlikely(ret))
 				return ret;
 		}
@@ -937,7 +938,6 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
 		ttm_flag_masked(&cur_flags, placement->busy_placement[i],
 				~TTM_PL_MASK_MEMTYPE);
 
-
 		if (mem_type == TTM_PL_SYSTEM) {
 			mem->mem_type = mem_type;
 			mem->placement = cur_flags;
diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c
index bd850c9..9e103a48 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c
@@ -50,6 +50,7 @@ struct ttm_range_manager {
 static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
 			       struct ttm_buffer_object *bo,
 			       struct ttm_placement *placement,
+			       uint32_t flags,
 			       struct ttm_mem_reg *mem)
 {
 	struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv;
@@ -67,7 +68,7 @@ static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man,
 	if (!node)
 		return -ENOMEM;
 
-	if (bo->mem.placement & TTM_PL_FLAG_TOPDOWN)
+	if (flags & TTM_PL_FLAG_TOPDOWN)
 		aflags = DRM_MM_CREATE_TOP;
 
 	spin_lock(&rman->lock);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
index b1273e8..26f8bdd 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
@@ -47,6 +47,7 @@ struct vmwgfx_gmrid_man {
 static int vmw_gmrid_man_get_node(struct ttm_mem_type_manager *man,
 				  struct ttm_buffer_object *bo,
 				  struct ttm_placement *placement,
+				  uint32_t flags,
 				  struct ttm_mem_reg *mem)
 {
 	struct vmwgfx_gmrid_man *gman =
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index e3f8c99..202f0a7 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -182,6 +182,7 @@ struct ttm_mem_type_manager_func {
 	 * @man: Pointer to a memory type manager.
 	 * @bo: Pointer to the buffer object we're allocating space for.
 	 * @placement: Placement details.
+	 * @flags: Additional placement flags.
 	 * @mem: Pointer to a struct ttm_mem_reg to be filled in.
 	 *
 	 * This function should allocate space in the memory type managed
@@ -206,6 +207,7 @@ struct ttm_mem_type_manager_func {
 	int  (*get_node)(struct ttm_mem_type_manager *man,
 			 struct ttm_buffer_object *bo,
 			 struct ttm_placement *placement,
+			 uint32_t flags,
 			 struct ttm_mem_reg *mem);
 
 	/**
-- 
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