Mesa (master): i965: Temporarily disable async mappings on non-LLC

[Matt Turner]

Module: Mesa
Branch: master
Commit: 71651b3139c501f50e6547c21a1cdb816b0a9dde
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=71651b3139c501f50e6547c21a1cdb816b0a9dde

Author: Matt Turner <mattst88 at gmail.com>
Date:   Thu Jun  8 15:13:42 2017 -0700

i965: Temporarily disable async mappings on non-LLC

Fixes regressions from commits e0a9b261e593 and a16355d67d92 by
neutering async mappings on non-LLC to be synchronous, like they were
before those two commits. :(

The failing tests include

piglit-test piglit.spec.nv_primitive_restart.primitive-restart-vbo_index_only
piglit-test piglit.spec.nv_primitive_restart.primitive-restart-vbo_combined_vertex_and_index
piglit-test piglit.spec.nv_primitive_restart.primitive-restart-vbo_separate_vertex_and_index
piglit-test piglit.spec.nv_primitive_restart.primitive-restart-vbo_vertex_only
piglit-test piglit.spec.arb_pixel_buffer_object.texsubimage-unpack pbo

---

 src/mesa/drivers/dri/i965/brw_bufmgr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_bufmgr.c b/src/mesa/drivers/dri/i965/brw_bufmgr.c
index 2ee57e2a0d..66a2d4964a 100644
--- a/src/mesa/drivers/dri/i965/brw_bufmgr.c
+++ b/src/mesa/drivers/dri/i965/brw_bufmgr.c
@@ -689,7 +689,7 @@ brw_bo_map_cpu(struct brw_context *brw, struct brw_bo *bo, unsigned flags)
    DBG("brw_bo_map_cpu: %d (%s) -> %p\n", bo->gem_handle, bo->name,
        bo->map_cpu);
 
-   if (!(flags & MAP_ASYNC)) {
+   if (!(flags & MAP_ASYNC) || !bufmgr->has_llc) {
       set_domain(brw, "CPU mapping", bo, I915_GEM_DOMAIN_CPU,
                  flags & MAP_WRITE ? I915_GEM_DOMAIN_CPU : 0);
    }
@@ -743,7 +743,7 @@ brw_bo_map_gtt(struct brw_context *brw, struct brw_bo *bo, unsigned flags)
    DBG("bo_map_gtt: %d (%s) -> %p\n", bo->gem_handle, bo->name,
        bo->map_gtt);
 
-   if (!(flags & MAP_ASYNC)) {
+   if (!(flags & MAP_ASYNC) || !bufmgr->has_llc) {
       set_domain(brw, "GTT mapping", bo,
                  I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
    }