1/* 2 * Copyright �� 2008 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 * Authors: 24 * Keith Packard <keithp@keithp.com> 25 * 26 */ 27 28#include <drm/drmP.h> 29#include <drm/i915_drm.h> 30#include "i915_drv.h" 31 32#if WATCH_LISTS 33int 34i915_verify_lists(struct drm_device *dev) 35{ 36 static int warned; 37 struct drm_i915_private *dev_priv = to_i915(dev); 38 struct drm_i915_gem_object *obj; 39 struct intel_engine_cs *ring; 40 int err = 0; 41 int i; 42 43 if (warned) 44 return 0; 45 46 for_each_ring(ring, dev_priv, i) { 47 list_for_each_entry(obj, &ring->active_list, ring_list[ring->id]) { 48 if (obj->base.dev != dev || 49 !atomic_read(&obj->base.refcount.refcount)) { 50 DRM_ERROR("%s: freed active obj %p\n", 51 ring->name, obj); 52 err++; 53 break; 54 } else if (!obj->active || 55 obj->last_read_req[ring->id] == NULL) { 56 DRM_ERROR("%s: invalid active obj %p\n", 57 ring->name, obj); 58 err++; 59 } else if (obj->base.write_domain) { 60 DRM_ERROR("%s: invalid write obj %p (w %x)\n", 61 ring->name, 62 obj, obj->base.write_domain); 63 err++; 64 } 65 } 66 } 67 68 return warned = err; 69} 70#endif /* WATCH_LIST */ 71