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/*
* 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_INACTIVE
void
i915_verify_inactive(struct drm_device *dev, char *file, int line)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_gem_object *obj;
struct drm_i915_gem_object *obj_priv;
list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, list) {
obj = &obj_priv->base;
if (obj_priv->pin_count || obj_priv->active ||
(obj->write_domain & ~(I915_GEM_DOMAIN_CPU |
I915_GEM_DOMAIN_GTT)))
DRM_ERROR("inactive %p (p %d a %d w %x) %s:%d\n",
obj,
obj_priv->pin_count, obj_priv->active,
obj->write_domain, file, line);
}
}
#endif /* WATCH_INACTIVE */
#if WATCH_EXEC | WATCH_PWRITE
static void
i915_gem_dump_page(struct page *page, uint32_t start, uint32_t end,
uint32_t bias, uint32_t mark)
{
uint32_t *mem = kmap_atomic(page, KM_USER0);
int i;
for (i = start; i < end; i += 4)
DRM_INFO("%08x: %08x%s\n",
(int) (bias + i), mem[i / 4],
(bias + i == mark) ? " ********" : "");
kunmap_atomic(mem, KM_USER0);
/* give syslog time to catch up */
msleep(1);
}
void
i915_gem_dump_object(struct drm_gem_object *obj, int len,
const char *where, uint32_t mark)
{
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
int page;
DRM_INFO("%s: object at offset %08x\n", where, obj_priv->gtt_offset);
for (page = 0; page < (len + PAGE_SIZE-1) / PAGE_SIZE; page++) {
int page_len, chunk, chunk_len;
page_len = len - page * PAGE_SIZE;
if (page_len > PAGE_SIZE)
page_len = PAGE_SIZE;
for (chunk = 0; chunk < page_len; chunk += 128) {
chunk_len = page_len - chunk;
if (chunk_len > 128)
chunk_len = 128;
i915_gem_dump_page(obj_priv->pages[page],
chunk, chunk + chunk_len,
obj_priv->gtt_offset +
page * PAGE_SIZE,
mark);
}
}
}
#endif
#if WATCH_COHERENCY
void
i915_gem_object_check_coherency(struct drm_gem_object *obj, int handle)
{
struct drm_device *dev = obj->dev;
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
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_priv->gtt_offset, handle,
obj->size / 1024);
gtt_mapping = ioremap(dev->agp->base + obj_priv->gtt_offset,
obj->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_priv->pages[page], KM_USER0);
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_priv->gtt_offset +
page * PAGE_SIZE + i * 4),
cpuval, gttval);
if (bad_count++ >= 8) {
DRM_INFO("...\n");
goto out;
}
}
}
kunmap_atomic(backing_map, KM_USER0);
backing_map = NULL;
}
out:
if (backing_map != NULL)
kunmap_atomic(backing_map, KM_USER0);
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
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