+pre_mutex_err:
+ /* Copy the updated relocations out regardless of current error
+ * state. Failure to update the relocs would mean that the next
+ * time userland calls execbuf, it would do so with presumed offset
+ * state that didn't match the actual object state.
+ */
+ ret2 = i915_gem_put_relocs_to_user(exec_list, args->buffer_count,
+ relocs);
+ if (ret2 != 0) {
+ DRM_ERROR("Failed to copy relocations back out: %d\n", ret2);
+
+ if (ret == 0)
+ ret = ret2;
+ }
+
+ drm_free_large(object_list);
+ kfree(cliprects);
+
+ return ret;
+}
+
+/*
+ * Legacy execbuffer just creates an exec2 list from the original exec object
+ * list array and passes it to the real function.
+ */
+int
+i915_gem_execbuffer(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_i915_gem_execbuffer *args = data;
+ struct drm_i915_gem_execbuffer2 exec2;
+ struct drm_i915_gem_exec_object *exec_list = NULL;
+ struct drm_i915_gem_exec_object2 *exec2_list = NULL;
+ int ret, i;
+
+#if WATCH_EXEC
+ DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n",
+ (int) args->buffers_ptr, args->buffer_count, args->batch_len);
+#endif
+
+ if (args->buffer_count < 1) {
+ DRM_ERROR("execbuf with %d buffers\n", args->buffer_count);
+ return -EINVAL;
+ }
+
+ /* Copy in the exec list from userland */
+ exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count);
+ exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count);
+ if (exec_list == NULL || exec2_list == NULL) {
+ DRM_ERROR("Failed to allocate exec list for %d buffers\n",
+ args->buffer_count);
+ drm_free_large(exec_list);
+ drm_free_large(exec2_list);
+ return -ENOMEM;
+ }
+ ret = copy_from_user(exec_list,
+ (struct drm_i915_relocation_entry __user *)
+ (uintptr_t) args->buffers_ptr,
+ sizeof(*exec_list) * args->buffer_count);
+ if (ret != 0) {
+ DRM_ERROR("copy %d exec entries failed %d\n",
+ args->buffer_count, ret);
+ drm_free_large(exec_list);
+ drm_free_large(exec2_list);
+ return -EFAULT;
+ }
+
+ for (i = 0; i < args->buffer_count; i++) {
+ exec2_list[i].handle = exec_list[i].handle;
+ exec2_list[i].relocation_count = exec_list[i].relocation_count;
+ exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr;
+ exec2_list[i].alignment = exec_list[i].alignment;
+ exec2_list[i].offset = exec_list[i].offset;
+ if (!IS_I965G(dev))
+ exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE;
+ else
+ exec2_list[i].flags = 0;
+ }
+
+ exec2.buffers_ptr = args->buffers_ptr;
+ exec2.buffer_count = args->buffer_count;
+ exec2.batch_start_offset = args->batch_start_offset;
+ exec2.batch_len = args->batch_len;
+ exec2.DR1 = args->DR1;
+ exec2.DR4 = args->DR4;
+ exec2.num_cliprects = args->num_cliprects;
+ exec2.cliprects_ptr = args->cliprects_ptr;
+ exec2.flags = I915_EXEC_RENDER;
+
+ ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list);