drm/vmwgfx: Add the possibility to validate a buffer as a MOB

Also do basic consistency checking.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 6ce733d..a9a0d69 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -94,6 +94,7 @@ struct vmw_dma_buffer {
 struct vmw_validate_buffer {
        struct ttm_validate_buffer base;
        struct drm_hash_item hash;
+       bool validate_as_mob;
 };
 
 struct vmw_res_func;
@@ -645,6 +646,7 @@ extern struct ttm_placement vmw_sys_placement;
 extern struct ttm_placement vmw_sys_ne_placement;
 extern struct ttm_placement vmw_evictable_placement;
 extern struct ttm_placement vmw_srf_placement;
+extern struct ttm_placement vmw_mob_placement;
 extern struct ttm_bo_driver vmw_bo_driver;
 extern int vmw_dma_quiescent(struct drm_device *dev);
 extern void vmw_piter_start(struct vmw_piter *viter,

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 599f646..9d7e49d 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -224,6 +224,7 @@ static int vmw_cmd_ok(struct vmw_private *dev_priv,
  *
  * @sw_context: The software context used for this command submission batch.
  * @bo: The buffer object to add.
+ * @validate_as_mob: Validate this buffer as a MOB.
  * @p_val_node: If non-NULL Will be updated with the validate node number
  * on return.
  *
@@ -232,6 +233,7 @@ static int vmw_cmd_ok(struct vmw_private *dev_priv,
  */
 static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
                                   struct ttm_buffer_object *bo,
+                                  bool validate_as_mob,
                                   uint32_t *p_val_node)
 {
        uint32_t val_node;
@@ -244,6 +246,10 @@ static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
                                    &hash) == 0)) {
                vval_buf = container_of(hash, struct vmw_validate_buffer,
                                        hash);
+               if (unlikely(vval_buf->validate_as_mob != validate_as_mob)) {
+                       DRM_ERROR("Inconsistent buffer usage.\n");
+                       return -EINVAL;
+               }
                val_buf = &vval_buf->base;
                val_node = vval_buf - sw_context->val_bufs;
        } else {
@@ -266,6 +272,7 @@ static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
                val_buf->bo = ttm_bo_reference(bo);
                val_buf->reserved = false;
                list_add_tail(&val_buf->head, &sw_context->validate_nodes);
+               vval_buf->validate_as_mob = validate_as_mob;
        }
 
        sw_context->fence_flags |= DRM_VMW_FENCE_FLAG_EXEC;
@@ -302,7 +309,8 @@ static int vmw_resources_reserve(struct vmw_sw_context *sw_context)
                        struct ttm_buffer_object *bo = &res->backup->base;
 
                        ret = vmw_bo_to_validate_list
-                               (sw_context, bo, NULL);
+                               (sw_context, bo,
+                                vmw_resource_needs_backup(res), NULL);
 
                        if (unlikely(ret != 0))
                                return ret;
@@ -586,7 +594,7 @@ static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv,
                        sw_context->needs_post_query_barrier = true;
                        ret = vmw_bo_to_validate_list(sw_context,
                                                      sw_context->cur_query_bo,
-                                                     NULL);
+                                                     dev_priv->has_mob, NULL);
                        if (unlikely(ret != 0))
                                return ret;
                }
@@ -594,7 +602,7 @@ static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv,
 
                ret = vmw_bo_to_validate_list(sw_context,
                                              dev_priv->dummy_query_bo,
-                                             NULL);
+                                             dev_priv->has_mob, NULL);
                if (unlikely(ret != 0))
                        return ret;
 
@@ -718,7 +726,7 @@ static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
        reloc = &sw_context->relocs[sw_context->cur_reloc++];
        reloc->location = ptr;
 
-       ret = vmw_bo_to_validate_list(sw_context, bo, &reloc->index);
+       ret = vmw_bo_to_validate_list(sw_context, bo, false, &reloc->index);
        if (unlikely(ret != 0))
                goto out_no_reloc;
 
@@ -1224,7 +1232,8 @@ static void vmw_clear_validations(struct vmw_sw_context *sw_context)
 }
 
 static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
-                                     struct ttm_buffer_object *bo)
+                                     struct ttm_buffer_object *bo,
+                                     bool validate_as_mob)
 {
        int ret;
 
@@ -1238,6 +1247,9 @@ static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
             dev_priv->dummy_query_bo_pinned))
                return 0;
 
+       if (validate_as_mob)
+               return ttm_bo_validate(bo, &vmw_mob_placement, true, false);
+
        /**
         * Put BO in VRAM if there is space, otherwise as a GMR.
         * If there is no space in VRAM and GMR ids are all used up,
@@ -1259,7 +1271,6 @@ static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
        return ret;
 }
 
-
 static int vmw_validate_buffers(struct vmw_private *dev_priv,
                                struct vmw_sw_context *sw_context)
 {
@@ -1267,7 +1278,8 @@ static int vmw_validate_buffers(struct vmw_private *dev_priv,
        int ret;
 
        list_for_each_entry(entry, &sw_context->validate_nodes, base.head) {
-               ret = vmw_validate_single_buffer(dev_priv, entry->base.bo);
+               ret = vmw_validate_single_buffer(dev_priv, entry->base.bo,
+                                                entry->validate_as_mob);
                if (unlikely(ret != 0))
                        return ret;
        }

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
index 9b5ea2a..1a62eed 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -471,6 +471,8 @@ int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
        }
 
        ret = vmw_dmabuf_init(dev_priv, &user_bo->dma, size,
+                             (dev_priv->has_mob) ?
+                             &vmw_sys_placement :
                              &vmw_vram_sys_placement, true,
                              &vmw_user_dmabuf_destroy);
        if (unlikely(ret != 0))