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drm/i915: Refactor scratch object allocation for gen2 w/a buffer 

The gen2 w/a buffer is stuffed into the same slot as the gen5+ scratch
buffer. If we pass in the size we want to allocate for the scratch
buffer, both callers can use the same routine.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1467390209-3576-11-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-07-01 17:23:20 +01:00
parent de8fe1663a
commit 7d5ea80720
3 changed files with 10 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/i915/intel_lrc.c
View File

@ -2056,7 +2056,7 @@ static int logical_render_ring_init(struct intel_engine_cs *engine)
engine->emit_flush = gen8_emit_flush_render;
engine->emit_request = gen8_emit_request_render;
ret = intel_init_pipe_control(engine);
ret = intel_init_pipe_control(engine, 4096);
if (ret)
return ret;

32
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -658,16 +658,16 @@ void intel_fini_pipe_control(struct intel_engine_cs *engine)
engine->scratch.obj = NULL;
}
int intel_init_pipe_control(struct intel_engine_cs *engine)
int intel_init_pipe_control(struct intel_engine_cs *engine, int size)
{
struct drm_i915_gem_object *obj;
int ret;
WARN_ON(engine->scratch.obj);
obj = i915_gem_object_create_stolen(engine->i915->dev, 4096);
obj = i915_gem_object_create_stolen(engine->i915->dev, size);
if (!obj)
obj = i915_gem_object_create(engine->i915->dev, 4096);
obj = i915_gem_object_create(engine->i915->dev, size);
if (IS_ERR(obj)) {
DRM_ERROR("Failed to allocate scratch page\n");
ret = PTR_ERR(obj);
@ -3002,7 +3002,6 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_engine_cs *engine = &dev_priv->engine[RCS];
struct drm_i915_gem_object *obj;
int ret;
engine->name = "render ring";
@ -3045,31 +3044,16 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
engine->init_hw = init_render_ring;
engine->cleanup = render_ring_cleanup;
/* Workaround batchbuffer to combat CS tlb bug. */
if (HAS_BROKEN_CS_TLB(dev_priv)) {
obj = i915_gem_object_create(dev, I830_WA_SIZE);
if (IS_ERR(obj)) {
DRM_ERROR("Failed to allocate batch bo\n");
return PTR_ERR(obj);
}
ret = i915_gem_obj_ggtt_pin(obj, 0, 0);
if (ret != 0) {
drm_gem_object_unreference(&obj->base);
DRM_ERROR("Failed to ping batch bo\n");
return ret;
}
engine->scratch.obj = obj;
engine->scratch.gtt_offset = i915_gem_obj_ggtt_offset(obj);
}
ret = intel_init_ring_buffer(dev, engine);
if (ret)
return ret;
if (INTEL_GEN(dev_priv) >= 5) {
ret = intel_init_pipe_control(engine);
ret = intel_init_pipe_control(engine, 4096);
if (ret)
return ret;
} else if (HAS_BROKEN_CS_TLB(dev_priv)) {
ret = intel_init_pipe_control(engine, I830_WA_SIZE);
if (ret)
return ret;
}

2
drivers/gpu/drm/i915/intel_ringbuffer.h
View File

@ -471,8 +471,8 @@ void intel_ring_init_seqno(struct intel_engine_cs *engine, u32 seqno);
int intel_ring_flush_all_caches(struct drm_i915_gem_request *req);
int intel_ring_invalidate_all_caches(struct drm_i915_gem_request *req);
int intel_init_pipe_control(struct intel_engine_cs *engine, int size);
void intel_fini_pipe_control(struct intel_engine_cs *engine);
int intel_init_pipe_control(struct intel_engine_cs *engine);
int intel_init_render_ring_buffer(struct drm_device *dev);
int intel_init_bsd_ring_buffer(struct drm_device *dev);