diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_execbuffer.c | 92 |
1 files changed, 44 insertions, 48 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index d461ad5f929..8513c04dc89 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -37,6 +37,7 @@ struct change_domains { uint32_t invalidate_domains; uint32_t flush_domains; uint32_t flush_rings; + uint32_t flips; }; /* @@ -190,6 +191,9 @@ i915_gem_object_set_to_gpu_domain(struct drm_i915_gem_object *obj, if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_GTT) i915_gem_release_mmap(obj); + if (obj->base.pending_write_domain) + cd->flips |= atomic_read(&obj->pending_flip); + /* The actual obj->write_domain will be updated with * pending_write_domain after we emit the accumulated flush for all * of our domain changes in execbuffers (which clears objects' @@ -774,6 +778,39 @@ i915_gem_execbuffer_sync_rings(struct drm_i915_gem_object *obj, } static int +i915_gem_execbuffer_wait_for_flips(struct intel_ring_buffer *ring, u32 flips) +{ + u32 plane, flip_mask; + int ret; + + /* Check for any pending flips. As we only maintain a flip queue depth + * of 1, we can simply insert a WAIT for the next display flip prior + * to executing the batch and avoid stalling the CPU. + */ + + for (plane = 0; flips >> plane; plane++) { + if (((flips >> plane) & 1) == 0) + continue; + + if (plane) + flip_mask = MI_WAIT_FOR_PLANE_B_FLIP; + else + flip_mask = MI_WAIT_FOR_PLANE_A_FLIP; + + ret = intel_ring_begin(ring, 2); + if (ret) + return ret; + + intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask); + intel_ring_emit(ring, MI_NOOP); + intel_ring_advance(ring); + } + + return 0; +} + + +static int i915_gem_execbuffer_move_to_gpu(struct intel_ring_buffer *ring, struct list_head *objects) { @@ -781,9 +818,7 @@ i915_gem_execbuffer_move_to_gpu(struct intel_ring_buffer *ring, struct change_domains cd; int ret; - cd.invalidate_domains = 0; - cd.flush_domains = 0; - cd.flush_rings = 0; + memset(&cd, 0, sizeof(cd)); list_for_each_entry(obj, objects, exec_list) i915_gem_object_set_to_gpu_domain(obj, ring, &cd); @@ -796,6 +831,12 @@ i915_gem_execbuffer_move_to_gpu(struct intel_ring_buffer *ring, return ret; } + if (cd.flips) { + ret = i915_gem_execbuffer_wait_for_flips(ring, cd.flips); + if (ret) + return ret; + } + list_for_each_entry(obj, objects, exec_list) { ret = i915_gem_execbuffer_sync_rings(obj, ring); if (ret) @@ -842,47 +883,6 @@ validate_exec_list(struct drm_i915_gem_exec_object2 *exec, return 0; } -static int -i915_gem_execbuffer_wait_for_flips(struct intel_ring_buffer *ring, - struct list_head *objects) -{ - struct drm_i915_gem_object *obj; - int flips; - - /* Check for any pending flips. As we only maintain a flip queue depth - * of 1, we can simply insert a WAIT for the next display flip prior - * to executing the batch and avoid stalling the CPU. - */ - flips = 0; - list_for_each_entry(obj, objects, exec_list) { - if (obj->base.write_domain) - flips |= atomic_read(&obj->pending_flip); - } - if (flips) { - int plane, flip_mask, ret; - - for (plane = 0; flips >> plane; plane++) { - if (((flips >> plane) & 1) == 0) - continue; - - if (plane) - flip_mask = MI_WAIT_FOR_PLANE_B_FLIP; - else - flip_mask = MI_WAIT_FOR_PLANE_A_FLIP; - - ret = intel_ring_begin(ring, 2); - if (ret) - return ret; - - intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask); - intel_ring_emit(ring, MI_NOOP); - intel_ring_advance(ring); - } - } - - return 0; -} - static void i915_gem_execbuffer_move_to_active(struct list_head *objects, struct intel_ring_buffer *ring, @@ -1133,10 +1133,6 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, if (ret) goto err; - ret = i915_gem_execbuffer_wait_for_flips(ring, &objects); - if (ret) - goto err; - seqno = i915_gem_next_request_seqno(ring); for (i = 0; i < ARRAY_SIZE(ring->sync_seqno); i++) { if (seqno < ring->sync_seqno[i]) { |