drm/vmwgfx: Emulate legacy shaders on guest-backed devices v2
[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / gpu / drm / vmwgfx / vmwgfx_execbuf.c
index 9441825..352224b 100644 (file)
@@ -235,8 +235,12 @@ static void vmw_resource_relocations_apply(uint32_t *cb,
 {
        struct vmw_resource_relocation *rel;
 
-       list_for_each_entry(rel, list, head)
-               cb[rel->offset] = rel->res->id;
+       list_for_each_entry(rel, list, head) {
+               if (likely(rel->res != NULL))
+                       cb[rel->offset] = rel->res->id;
+               else
+                       cb[rel->offset] = SVGA_3D_CMD_NOP;
+       }
 }
 
 static int vmw_cmd_invalid(struct vmw_private *dev_priv,
@@ -381,22 +385,27 @@ static int vmw_resources_validate(struct vmw_sw_context *sw_context)
 }
 
 /**
- * vmw_cmd_res_check - Check that a resource is present and if so, put it
+ * vmw_cmd_compat_res_check - Check that a resource is present and if so, put it
  * on the resource validate list unless it's already there.
  *
  * @dev_priv: Pointer to a device private structure.
  * @sw_context: Pointer to the software context.
  * @res_type: Resource type.
  * @converter: User-space visisble type specific information.
- * @id: Pointer to the location in the command buffer currently being
+ * @id: user-space resource id handle.
+ * @id_loc: Pointer to the location in the command buffer currently being
  * parsed from where the user-space resource id handle is located.
+ * @p_val: Pointer to pointer to resource validalidation node. Populated
+ * on exit.
  */
-static int vmw_cmd_res_check(struct vmw_private *dev_priv,
-                            struct vmw_sw_context *sw_context,
-                            enum vmw_res_type res_type,
-                            const struct vmw_user_resource_conv *converter,
-                            uint32_t *id,
-                            struct vmw_resource_val_node **p_val)
+static int
+vmw_cmd_compat_res_check(struct vmw_private *dev_priv,
+                        struct vmw_sw_context *sw_context,
+                        enum vmw_res_type res_type,
+                        const struct vmw_user_resource_conv *converter,
+                        uint32_t id,
+                        uint32_t *id_loc,
+                        struct vmw_resource_val_node **p_val)
 {
        struct vmw_res_cache_entry *rcache =
                &sw_context->res_cache[res_type];
@@ -404,7 +413,7 @@ static int vmw_cmd_res_check(struct vmw_private *dev_priv,
        struct vmw_resource_val_node *node;
        int ret;
 
-       if (*id == SVGA3D_INVALID_ID) {
+       if (id == SVGA3D_INVALID_ID) {
                if (p_val)
                        *p_val = NULL;
                if (res_type == vmw_res_context) {
@@ -419,7 +428,7 @@ static int vmw_cmd_res_check(struct vmw_private *dev_priv,
         * resource
         */
 
-       if (likely(rcache->valid && *id == rcache->handle)) {
+       if (likely(rcache->valid && id == rcache->handle)) {
                const struct vmw_resource *res = rcache->res;
 
                rcache->node->first_usage = false;
@@ -428,28 +437,28 @@ static int vmw_cmd_res_check(struct vmw_private *dev_priv,
 
                return vmw_resource_relocation_add
                        (&sw_context->res_relocations, res,
-                        id - sw_context->buf_start);
+                        id_loc - sw_context->buf_start);
        }
 
        ret = vmw_user_resource_lookup_handle(dev_priv,
-                                             sw_context->tfile,
-                                             *id,
+                                             sw_context->fp->tfile,
+                                             id,
                                              converter,
                                              &res);
        if (unlikely(ret != 0)) {
                DRM_ERROR("Could not find or use resource 0x%08x.\n",
-                         (unsigned) *id);
+                         (unsigned) id);
                dump_stack();
                return ret;
        }
 
        rcache->valid = true;
        rcache->res = res;
-       rcache->handle = *id;
+       rcache->handle = id;
 
        ret = vmw_resource_relocation_add(&sw_context->res_relocations,
                                          res,
-                                         id - sw_context->buf_start);
+                                         id_loc - sw_context->buf_start);
        if (unlikely(ret != 0))
                goto out_no_reloc;
 
@@ -483,6 +492,31 @@ out_no_reloc:
 }
 
 /**
+ * vmw_cmd_res_check - Check that a resource is present and if so, put it
+ * on the resource validate list unless it's already there.
+ *
+ * @dev_priv: Pointer to a device private structure.
+ * @sw_context: Pointer to the software context.
+ * @res_type: Resource type.
+ * @converter: User-space visisble type specific information.
+ * @id_loc: Pointer to the location in the command buffer currently being
+ * parsed from where the user-space resource id handle is located.
+ * @p_val: Pointer to pointer to resource validalidation node. Populated
+ * on exit.
+ */
+static int
+vmw_cmd_res_check(struct vmw_private *dev_priv,
+                 struct vmw_sw_context *sw_context,
+                 enum vmw_res_type res_type,
+                 const struct vmw_user_resource_conv *converter,
+                 uint32_t *id_loc,
+                 struct vmw_resource_val_node **p_val)
+{
+       return vmw_cmd_compat_res_check(dev_priv, sw_context, res_type,
+                                       converter, *id_loc, id_loc, p_val);
+}
+
+/**
  * vmw_cmd_cid_check - Check a command header for valid context information.
  *
  * @dev_priv: Pointer to a device private structure.
@@ -769,7 +803,7 @@ static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
        struct vmw_relocation *reloc;
        int ret;
 
-       ret = vmw_user_dmabuf_lookup(sw_context->tfile, handle, &vmw_bo);
+       ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo);
        if (unlikely(ret != 0)) {
                DRM_ERROR("Could not find or use MOB buffer.\n");
                return -EINVAL;
@@ -830,7 +864,7 @@ static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
        struct vmw_relocation *reloc;
        int ret;
 
-       ret = vmw_user_dmabuf_lookup(sw_context->tfile, handle, &vmw_bo);
+       ret = vmw_user_dmabuf_lookup(sw_context->fp->tfile, handle, &vmw_bo);
        if (unlikely(ret != 0)) {
                DRM_ERROR("Could not find or use GMR region.\n");
                return -EINVAL;
@@ -1129,7 +1163,8 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv,
 
        srf = vmw_res_to_srf(sw_context->res_cache[vmw_res_surface].res);
 
-       vmw_kms_cursor_snoop(srf, sw_context->tfile, &vmw_bo->base, header);
+       vmw_kms_cursor_snoop(srf, sw_context->fp->tfile, &vmw_bo->base,
+                            header);
 
 out_no_surface:
        vmw_dmabuf_unreference(&vmw_bo);
@@ -1480,6 +1515,98 @@ static int vmw_cmd_invalidate_gb_surface(struct vmw_private *dev_priv,
                                 &cmd->body.sid, NULL);
 }
 
+
+/**
+ * vmw_cmd_shader_define - Validate an SVGA_3D_CMD_SHADER_DEFINE
+ * command
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context being used for this batch.
+ * @header: Pointer to the command header in the command stream.
+ */
+static int vmw_cmd_shader_define(struct vmw_private *dev_priv,
+                                struct vmw_sw_context *sw_context,
+                                SVGA3dCmdHeader *header)
+{
+       struct vmw_shader_define_cmd {
+               SVGA3dCmdHeader header;
+               SVGA3dCmdDefineShader body;
+       } *cmd;
+       int ret;
+       size_t size;
+
+       cmd = container_of(header, struct vmw_shader_define_cmd,
+                          header);
+
+       ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
+                               user_context_converter, &cmd->body.cid,
+                               NULL);
+       if (unlikely(ret != 0))
+               return ret;
+
+       if (unlikely(!dev_priv->has_mob))
+               return 0;
+
+       size = cmd->header.size - sizeof(cmd->body);
+       ret = vmw_compat_shader_add(sw_context->fp->shman,
+                                   cmd->body.shid, cmd + 1,
+                                   cmd->body.type, size,
+                                   sw_context->fp->tfile,
+                                   &sw_context->staged_shaders);
+       if (unlikely(ret != 0))
+               return ret;
+
+       return vmw_resource_relocation_add(&sw_context->res_relocations,
+                                          NULL, &cmd->header.id -
+                                          sw_context->buf_start);
+
+       return 0;
+}
+
+/**
+ * vmw_cmd_shader_destroy - Validate an SVGA_3D_CMD_SHADER_DESTROY
+ * command
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context being used for this batch.
+ * @header: Pointer to the command header in the command stream.
+ */
+static int vmw_cmd_shader_destroy(struct vmw_private *dev_priv,
+                                 struct vmw_sw_context *sw_context,
+                                 SVGA3dCmdHeader *header)
+{
+       struct vmw_shader_destroy_cmd {
+               SVGA3dCmdHeader header;
+               SVGA3dCmdDestroyShader body;
+       } *cmd;
+       int ret;
+
+       cmd = container_of(header, struct vmw_shader_destroy_cmd,
+                          header);
+
+       ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
+                               user_context_converter, &cmd->body.cid,
+                               NULL);
+       if (unlikely(ret != 0))
+               return ret;
+
+       if (unlikely(!dev_priv->has_mob))
+               return 0;
+
+       ret = vmw_compat_shader_remove(sw_context->fp->shman,
+                                      cmd->body.shid,
+                                      cmd->body.type,
+                                      &sw_context->staged_shaders);
+       if (unlikely(ret != 0))
+               return ret;
+
+       return vmw_resource_relocation_add(&sw_context->res_relocations,
+                                          NULL, &cmd->header.id -
+                                          sw_context->buf_start);
+
+       return 0;
+}
+
 /**
  * vmw_cmd_set_shader - Validate an SVGA_3D_CMD_SET_SHADER
  * command
@@ -1511,10 +1638,17 @@ static int vmw_cmd_set_shader(struct vmw_private *dev_priv,
        if (dev_priv->has_mob) {
                struct vmw_ctx_bindinfo bi;
                struct vmw_resource_val_node *res_node;
+               u32 shid = cmd->body.shid;
+
+               (void) vmw_compat_shader_lookup(sw_context->fp->shman,
+                                               cmd->body.type,
+                                               &shid);
 
-               ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_shader,
-                                       user_shader_converter,
-                                       &cmd->body.shid, &res_node);
+               ret = vmw_cmd_compat_res_check(dev_priv, sw_context,
+                                              vmw_res_shader,
+                                              user_shader_converter,
+                                              shid,
+                                              &cmd->body.shid, &res_node);
                if (unlikely(ret != 0))
                        return ret;
 
@@ -1669,10 +1803,10 @@ static const struct vmw_cmd_entry const vmw_cmd_entries[SVGA_3D_CMD_MAX] = {
                    true, false, false),
        VMW_CMD_DEF(SVGA_3D_CMD_PRESENT, &vmw_cmd_present_check,
                    false, false, false),
-       VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DEFINE, &vmw_cmd_cid_check,
-                   true, true, false),
-       VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DESTROY, &vmw_cmd_cid_check,
-                   true, true, false),
+       VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DEFINE, &vmw_cmd_shader_define,
+                   true, false, false),
+       VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DESTROY, &vmw_cmd_shader_destroy,
+                   true, false, false),
        VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER, &vmw_cmd_set_shader,
                    true, false, false),
        VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER_CONST, &vmw_cmd_set_shader_const,
@@ -2206,7 +2340,7 @@ int vmw_execbuf_process(struct drm_file *file_priv,
        } else
                sw_context->kernel = true;
 
-       sw_context->tfile = vmw_fpriv(file_priv)->tfile;
+       sw_context->fp = vmw_fpriv(file_priv);
        sw_context->cur_reloc = 0;
        sw_context->cur_val_buf = 0;
        sw_context->fence_flags = 0;
@@ -2223,6 +2357,7 @@ int vmw_execbuf_process(struct drm_file *file_priv,
                        goto out_unlock;
                sw_context->res_ht_initialized = true;
        }
+       INIT_LIST_HEAD(&sw_context->staged_shaders);
 
        INIT_LIST_HEAD(&resource_list);
        ret = vmw_cmd_check_all(dev_priv, sw_context, kernel_commands,
@@ -2311,6 +2446,8 @@ int vmw_execbuf_process(struct drm_file *file_priv,
        }
 
        list_splice_init(&sw_context->resource_list, &resource_list);
+       vmw_compat_shaders_commit(sw_context->fp->shman,
+                                 &sw_context->staged_shaders);
        mutex_unlock(&dev_priv->cmdbuf_mutex);
 
        /*
@@ -2337,6 +2474,8 @@ out_unlock:
        list_splice_init(&sw_context->resource_list, &resource_list);
        error_resource = sw_context->error_resource;
        sw_context->error_resource = NULL;
+       vmw_compat_shaders_revert(sw_context->fp->shman,
+                                 &sw_context->staged_shaders);
        mutex_unlock(&dev_priv->cmdbuf_mutex);
 
        /*