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drm/i915: Tidy up execbuffer command parsing code 

Move it to a separate function since the main do_execbuffer function
already has so much going on.

v2:
- Move pin/unpin calls inside i915_parse_cmds() (Chris W, v4 7/7
  feedback)

Issue: VIZ-4719
Signed-off-by: Brad Volkin <bradley.d.volkin@intel.com>
Reviewed-By: Jon Bloomfield <jon.bloomfield@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Brad Volkin 2014-12-11 12:13:12 -08:00 committed by Daniel Vetter
parent 0079a7df3a
commit 7174537627
2 changed files with 77 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/i915/i915_cmd_parser.c
View File

@ -1050,10 +1050,17 @@ int i915_parse_cmds(struct intel_engine_cs *ring,
struct drm_i915_cmd_descriptor default_desc = { 0 };
bool oacontrol_set = false; /* OACONTROL tracking. See check_cmd() */
ret = i915_gem_obj_ggtt_pin(shadow_batch_obj, 4096, 0);
if (ret) {
DRM_DEBUG_DRIVER("CMD: Failed to pin shadow batch\n");
return -1;
}
batch_base = copy_batch(shadow_batch_obj, batch_obj,
batch_start_offset, batch_len);
if (IS_ERR(batch_base)) {
DRM_DEBUG_DRIVER("CMD: Failed to copy batch\n");
i915_gem_object_ggtt_unpin(shadow_batch_obj);
return PTR_ERR(batch_base);
}
@ -1124,6 +1131,7 @@ int i915_parse_cmds(struct intel_engine_cs *ring,
}
vunmap(batch_base);
i915_gem_object_ggtt_unpin(shadow_batch_obj);
return ret;
}

124
drivers/gpu/drm/i915/i915_gem_execbuffer.c
View File

@ -1072,6 +1072,65 @@ i915_emit_box(struct intel_engine_cs *ring,
return 0;
}
static struct drm_i915_gem_object*
i915_gem_execbuffer_parse(struct intel_engine_cs *ring,
struct drm_i915_gem_exec_object2 *shadow_exec_entry,
struct eb_vmas *eb,
struct drm_i915_gem_object *batch_obj,
u32 batch_start_offset,
u32 batch_len,
bool is_master,
u32 *flags)
{
struct drm_i915_private *dev_priv = to_i915(batch_obj->base.dev);
struct drm_i915_gem_object *shadow_batch_obj;
int ret;
shadow_batch_obj = i915_gem_batch_pool_get(&dev_priv->mm.batch_pool,
batch_obj->base.size);
if (IS_ERR(shadow_batch_obj))
return shadow_batch_obj;
ret = i915_parse_cmds(ring,
batch_obj,
shadow_batch_obj,
batch_start_offset,
batch_len,
is_master);
if (ret) {
if (ret == -EACCES)
return batch_obj;
} else {
struct i915_vma *vma;
memset(shadow_exec_entry, 0, sizeof(*shadow_exec_entry));
vma = i915_gem_obj_to_ggtt(shadow_batch_obj);
vma->exec_entry = shadow_exec_entry;
vma->exec_entry->flags = __EXEC_OBJECT_PURGEABLE;
drm_gem_object_reference(&shadow_batch_obj->base);
list_add_tail(&vma->exec_list, &eb->vmas);
shadow_batch_obj->base.pending_read_domains =
batch_obj->base.pending_read_domains;
/*
* Set the DISPATCH_SECURE bit to remove the NON_SECURE
* bit from MI_BATCH_BUFFER_START commands issued in the
* dispatch_execbuffer implementations. We specifically
* don't want that set when the command parser is
* enabled.
*
* FIXME: with aliasing ppgtt, buffers that should only
* be in ggtt still end up in the aliasing ppgtt. remove
* this check when that is fixed.
*/
if (USES_FULL_PPGTT(dev))
*flags |= I915_DISPATCH_SECURE;
}
return ret ? ERR_PTR(ret) : shadow_batch_obj;
}
int
i915_gem_ringbuffer_submission(struct drm_device *dev, struct drm_file *file,
@ -1289,7 +1348,6 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
struct drm_i915_private *dev_priv = dev->dev_private;
struct eb_vmas *eb;
struct drm_i915_gem_object *batch_obj;
struct drm_i915_gem_object *shadow_batch_obj = NULL;
struct drm_i915_gem_exec_object2 shadow_exec_entry;
struct intel_engine_cs *ring;
struct intel_context *ctx;
@ -1409,62 +1467,18 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
}
if (i915_needs_cmd_parser(ring)) {
shadow_batch_obj =
i915_gem_batch_pool_get(&dev_priv->mm.batch_pool,
batch_obj->base.size);
if (IS_ERR(shadow_batch_obj)) {
ret = PTR_ERR(shadow_batch_obj);
/* Don't try to clean up the obj in the error path */
shadow_batch_obj = NULL;
batch_obj = i915_gem_execbuffer_parse(ring,
&shadow_exec_entry,
eb,
batch_obj,
args->batch_start_offset,
args->batch_len,
file->is_master,
&flags);
if (IS_ERR(batch_obj)) {
ret = PTR_ERR(batch_obj);
goto err;
}
ret = i915_gem_obj_ggtt_pin(shadow_batch_obj, 4096, 0);
if (ret)
goto err;
ret = i915_parse_cmds(ring,
batch_obj,
shadow_batch_obj,
args->batch_start_offset,
args->batch_len,
file->is_master);
i915_gem_object_ggtt_unpin(shadow_batch_obj);
if (ret) {
if (ret != -EACCES)
goto err;
} else {
struct i915_vma *vma;
memset(&shadow_exec_entry, 0,
sizeof(shadow_exec_entry));
vma = i915_gem_obj_to_ggtt(shadow_batch_obj);
vma->exec_entry = &shadow_exec_entry;
vma->exec_entry->flags = __EXEC_OBJECT_PURGEABLE;
drm_gem_object_reference(&shadow_batch_obj->base);
list_add_tail(&vma->exec_list, &eb->vmas);
shadow_batch_obj->base.pending_read_domains =
batch_obj->base.pending_read_domains;
batch_obj = shadow_batch_obj;
/*
* Set the DISPATCH_SECURE bit to remove the NON_SECURE
* bit from MI_BATCH_BUFFER_START commands issued in the
* dispatch_execbuffer implementations. We specifically
* don't want that set when the command parser is
* enabled.
*
* FIXME: with aliasing ppgtt, buffers that should only
* be in ggtt still end up in the aliasing ppgtt. remove
* this check when that is fixed.
*/
if (USES_FULL_PPGTT(dev))
flags |= I915_DISPATCH_SECURE;
}
}
batch_obj->base.pending_read_domains |= I915_GEM_DOMAIN_COMMAND;