[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / i915 / i915_gem_debug.c

/*
 * Copyright © 2008 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 * Authors:
 *    Keith Packard <keithp@keithp.com>
 *
 */

#include "drmP.h"
#include "drm.h"
#include "i915_drm.h"
#include "i915_drv.h"

#if WATCH_LISTS
int
i915_verify_lists(struct drm_device *dev)
{
	static int warned;
	drm_i915_private_t *dev_priv = dev->dev_private;
	struct drm_i915_gem_object *obj;
	int err = 0;

	if (warned)
		return 0;

	list_for_each_entry(obj, &dev_priv->render_ring.active_list, list) {
		if (obj->base.dev != dev ||
		    !atomic_read(&obj->base.refcount.refcount)) {
			DRM_ERROR("freed render active %p\n", obj);
			err++;
			break;
		} else if (!obj->active ||
			   (obj->base.read_domains & I915_GEM_GPU_DOMAINS) == 0) {
			DRM_ERROR("invalid render active %p (a %d r %x)\n",
				  obj,
				  obj->active,
				  obj->base.read_domains);
			err++;
		} else if (obj->base.write_domain && list_empty(&obj->gpu_write_list)) {
			DRM_ERROR("invalid render active %p (w %x, gwl %d)\n",
				  obj,
				  obj->base.write_domain,
				  !list_empty(&obj->gpu_write_list));
			err++;
		}
	}

	list_for_each_entry(obj, &dev_priv->mm.flushing_list, list) {
		if (obj->base.dev != dev ||
		    !atomic_read(&obj->base.refcount.refcount)) {
			DRM_ERROR("freed flushing %p\n", obj);
			err++;
			break;
		} else if (!obj->active ||
			   (obj->base.write_domain & I915_GEM_GPU_DOMAINS) == 0 ||
			   list_empty(&obj->gpu_write_list)) {
			DRM_ERROR("invalid flushing %p (a %d w %x gwl %d)\n",
				  obj,
				  obj->active,
				  obj->base.write_domain,
				  !list_empty(&obj->gpu_write_list));
			err++;
		}
	}

	list_for_each_entry(obj, &dev_priv->mm.gpu_write_list, gpu_write_list) {
		if (obj->base.dev != dev ||
		    !atomic_read(&obj->base.refcount.refcount)) {
			DRM_ERROR("freed gpu write %p\n", obj);
			err++;
			break;
		} else if (!obj->active ||
			   (obj->base.write_domain & I915_GEM_GPU_DOMAINS) == 0) {
			DRM_ERROR("invalid gpu write %p (a %d w %x)\n",
				  obj,
				  obj->active,
				  obj->base.write_domain);
			err++;
		}
	}

	list_for_each_entry(obj, &dev_priv->mm.inactive_list, list) {
		if (obj->base.dev != dev ||
		    !atomic_read(&obj->base.refcount.refcount)) {
			DRM_ERROR("freed inactive %p\n", obj);
			err++;
			break;
		} else if (obj->pin_count || obj->active ||
			   (obj->base.write_domain & I915_GEM_GPU_DOMAINS)) {
			DRM_ERROR("invalid inactive %p (p %d a %d w %x)\n",
				  obj,
				  obj->pin_count, obj->active,
				  obj->base.write_domain);
			err++;
		}
	}

	return warned = err;
}
#endif /* WATCH_INACTIVE */

#if WATCH_COHERENCY
void
i915_gem_object_check_coherency(struct drm_i915_gem_object *obj, int handle)
{
	struct drm_device *dev = obj->base.dev;
	int page;
	uint32_t *gtt_mapping;
	uint32_t *backing_map = NULL;
	int bad_count = 0;

	DRM_INFO("%s: checking coherency of object %p@0x%08x (%d, %zdkb):\n",
		 __func__, obj, obj->gtt_offset, handle,
		 obj->size / 1024);

	gtt_mapping = ioremap(dev_priv->mm.gtt_base_addr + obj->gtt_offset,
			      obj->base.size);
	if (gtt_mapping == NULL) {
		DRM_ERROR("failed to map GTT space\n");
		return;
	}

	for (page = 0; page < obj->size / PAGE_SIZE; page++) {
		int i;

		backing_map = kmap_atomic(obj->pages[page]);

		if (backing_map == NULL) {
			DRM_ERROR("failed to map backing page\n");
			goto out;
		}

		for (i = 0; i < PAGE_SIZE / 4; i++) {
			uint32_t cpuval = backing_map[i];
			uint32_t gttval = readl(gtt_mapping +
						page * 1024 + i);

			if (cpuval != gttval) {
				DRM_INFO("incoherent CPU vs GPU at 0x%08x: "
					 "0x%08x vs 0x%08x\n",
					 (int)(obj->gtt_offset +
					       page * PAGE_SIZE + i * 4),
					 cpuval, gttval);
				if (bad_count++ >= 8) {
					DRM_INFO("...\n");
					goto out;
				}
			}
		}
		kunmap_atomic(backing_map);
		backing_map = NULL;
	}

 out:
	if (backing_map != NULL)
		kunmap_atomic(backing_map);
	iounmap(gtt_mapping);

	/* give syslog time to catch up */
	msleep(1);

	/* Directly flush the object, since we just loaded values with the CPU
	 * from the backing pages and we don't want to disturb the cache
	 * management that we're trying to observe.
	 */

	i915_gem_clflush_object(obj);
}
#endif
Commit	Line	Data
673a394b EA	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 "drmP.h"
	29	#include "drm.h"
	30	#include "i915_drm.h"
	31	#include "i915_drv.h"
	32
23bc5982 CW	33	#if WATCH_LISTS
	34	int
	35	i915_verify_lists(struct drm_device *dev)
673a394b	36	{
23bc5982	37	static int warned;
673a394b	38	drm_i915_private_t *dev_priv = dev->dev_private;
23bc5982 CW	39	struct drm_i915_gem_object *obj;
	40	int err = 0;
	41
	42	if (warned)
	43	return 0;
	44
	45	list_for_each_entry(obj, &dev_priv->render_ring.active_list, list) {
	46	if (obj->base.dev != dev \|\|
	47	!atomic_read(&obj->base.refcount.refcount)) {
	48	DRM_ERROR("freed render active %p\n", obj);
	49	err++;
	50	break;
	51	} else if (!obj->active \|\|
	52	(obj->base.read_domains & I915_GEM_GPU_DOMAINS) == 0) {
	53	DRM_ERROR("invalid render active %p (a %d r %x)\n",
	54	obj,
	55	obj->active,
	56	obj->base.read_domains);
	57	err++;
	58	} else if (obj->base.write_domain && list_empty(&obj->gpu_write_list)) {
	59	DRM_ERROR("invalid render active %p (w %x, gwl %d)\n",
	60	obj,
	61	obj->base.write_domain,
	62	!list_empty(&obj->gpu_write_list));
	63	err++;
	64	}
	65	}
	66
	67	list_for_each_entry(obj, &dev_priv->mm.flushing_list, list) {
	68	if (obj->base.dev != dev \|\|
	69	!atomic_read(&obj->base.refcount.refcount)) {
	70	DRM_ERROR("freed flushing %p\n", obj);
	71	err++;
	72	break;
	73	} else if (!obj->active \|\|
	74	(obj->base.write_domain & I915_GEM_GPU_DOMAINS) == 0 \|\|
0206e353	75	list_empty(&obj->gpu_write_list)) {
23bc5982 CW	76	DRM_ERROR("invalid flushing %p (a %d w %x gwl %d)\n",
	77	obj,
	78	obj->active,
	79	obj->base.write_domain,
	80	!list_empty(&obj->gpu_write_list));
	81	err++;
	82	}
	83	}
	84
	85	list_for_each_entry(obj, &dev_priv->mm.gpu_write_list, gpu_write_list) {
	86	if (obj->base.dev != dev \|\|
	87	!atomic_read(&obj->base.refcount.refcount)) {
	88	DRM_ERROR("freed gpu write %p\n", obj);
	89	err++;
	90	break;
	91	} else if (!obj->active \|\|
	92	(obj->base.write_domain & I915_GEM_GPU_DOMAINS) == 0) {
	93	DRM_ERROR("invalid gpu write %p (a %d w %x)\n",
	94	obj,
	95	obj->active,
	96	obj->base.write_domain);
	97	err++;
	98	}
	99	}
673a394b	100
23bc5982 CW	101	list_for_each_entry(obj, &dev_priv->mm.inactive_list, list) {
	102	if (obj->base.dev != dev \|\|
	103	!atomic_read(&obj->base.refcount.refcount)) {
	104	DRM_ERROR("freed inactive %p\n", obj);
	105	err++;
	106	break;
	107	} else if (obj->pin_count \|\| obj->active \|\|
	108	(obj->base.write_domain & I915_GEM_GPU_DOMAINS)) {
	109	DRM_ERROR("invalid inactive %p (p %d a %d w %x)\n",
673a394b	110	obj,
23bc5982 CW	111	obj->pin_count, obj->active,
	112	obj->base.write_domain);
	113	err++;
	114	}
673a394b	115	}
23bc5982	116
23bc5982	117	return warned = err;
673a394b EA	118	}
	119	#endif /* WATCH_INACTIVE */
	120
673a394b EA	121	#if WATCH_COHERENCY
673a394b EA	122	void
05394f39	123	i915_gem_object_check_coherency(struct drm_i915_gem_object *obj, int handle)
673a394b	124	{
05394f39	125	struct drm_device *dev = obj->base.dev;
673a394b EA	126	int page;
	127	uint32_t *gtt_mapping;
	128	uint32_t *backing_map = NULL;
	129	int bad_count = 0;
	130
cfd43c02	131	DRM_INFO("%s: checking coherency of object %p@0x%08x (%d, %zdkb):\n",
05394f39	132	__func__, obj, obj->gtt_offset, handle,
673a394b EA	133	obj->size / 1024);
673a394b EA	134
dd2757f8 DV	135	gtt_mapping = ioremap(dev_priv->mm.gtt_base_addr + obj->gtt_offset,
dd2757f8 DV	136	obj->base.size);
673a394b EA	137	if (gtt_mapping == NULL) {
	138	DRM_ERROR("failed to map GTT space\n");
	139	return;
	140	}
	141
	142	for (page = 0; page < obj->size / PAGE_SIZE; page++) {
	143	int i;
	144
130c2561	145	backing_map = kmap_atomic(obj->pages[page]);
673a394b EA	146
	147	if (backing_map == NULL) {
	148	DRM_ERROR("failed to map backing page\n");
	149	goto out;
	150	}
	151
	152	for (i = 0; i < PAGE_SIZE / 4; i++) {
	153	uint32_t cpuval = backing_map[i];
	154	uint32_t gttval = readl(gtt_mapping +
	155	page * 1024 + i);
	156
	157	if (cpuval != gttval) {
	158	DRM_INFO("incoherent CPU vs GPU at 0x%08x: "
	159	"0x%08x vs 0x%08x\n",
05394f39	160	(int)(obj->gtt_offset +
673a394b EA	161	page * PAGE_SIZE + i * 4),
	162	cpuval, gttval);
	163	if (bad_count++ >= 8) {
	164	DRM_INFO("...\n");
	165	goto out;
	166	}
	167	}
	168	}
130c2561	169	kunmap_atomic(backing_map);
673a394b EA	170	backing_map = NULL;
	171	}
	172
	173	out:
	174	if (backing_map != NULL)
130c2561	175	kunmap_atomic(backing_map);
673a394b EA	176	iounmap(gtt_mapping);
	177
	178	/* give syslog time to catch up */
	179	msleep(1);
	180
	181	/* Directly flush the object, since we just loaded values with the CPU
	182	* from the backing pages and we don't want to disturb the cache
	183	* management that we're trying to observe.
	184	*/
	185
	186	i915_gem_clflush_object(obj);
	187	}
	188	#endif