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drm/i915: Implement batch and ring buffer dumping

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We create a debugfs node (i915_ringbuffer_data) to expose a hex dump
of the ring buffer itself.  We also expose another debugfs node
(i915_ringbuffer_info) with information on the state (i.e. head, tail
addresses) of the ringbuffer.

For batchbuffer dumping, we look at the device's active_list, dumping
each object which has I915_GEM_DOMAIN_COMMAND in its read
domains. This is all exposed through the dri/i915_batchbuffers debugfs
file with a header for each object (giving the objects gtt_offset so
that it can be matched against the offset given in the
BATCH_BUFFER_START command.

Signed-off-by: Ben Gamari <bgamari@gmail.com>
Signed-off-by: Carl Worth <cworth@cworth.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Ben Gamari
2009-04-02 11:24:54 -07:00
committed by Eric Anholt
parent 8fe74cf053
commit 6911a9b8ae
3 changed files with 98 additions and 5 deletions
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8
drivers/gpu/drm/i915/i915_gem.c
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@@ -43,8 +43,6 @@ static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj,
uint64_t offset,
uint64_t size);
static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj);
static int i915_gem_object_get_pages(struct drm_gem_object *obj);
static void i915_gem_object_put_pages(struct drm_gem_object *obj);
static int i915_gem_object_wait_rendering(struct drm_gem_object *obj);
static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj,
unsigned alignment);
@@ -1285,7 +1283,7 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
return 0;
}
static void
void
i915_gem_object_put_pages(struct drm_gem_object *obj)
{
struct drm_i915_gem_object *obj_priv = obj->driver_private;
@@ -1884,7 +1882,7 @@ i915_gem_evict_everything(struct drm_device *dev)
return ret;
}
static int
int
i915_gem_object_get_pages(struct drm_gem_object *obj)
{
struct drm_i915_gem_object *obj_priv = obj->driver_private;
@@ -3243,7 +3241,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
exec_offset = exec_list[args->buffer_count - 1].offset;
#if WATCH_EXEC
i915_gem_dump_object(object_list[args->buffer_count - 1],
i915_gem_dump_object(batch_obj,
args->batch_len,
__func__,
~0);