From: Jerome Glisse <jglisse@xxxxxxxxxx> Cayman seems to be particularly sensitive to read cache returning old data after bind/unbind to GTT. Flush read cache for GTT range with each fences for all new hw. Should fix several rendering glitches. Like V2 flush whole address space V3 also flush shader read cache https://bugs.freedesktop.org/show_bug.cgi?id=40221 https://bugs.freedesktop.org/show_bug.cgi?id=38022 https://bugzilla.redhat.com/show_bug.cgi?id=738790 Signed-off-by: Jerome Glisse <jglisse@xxxxxxxxxx> --- drivers/gpu/drm/radeon/evergreen_blit_kms.c | 4 ++-- drivers/gpu/drm/radeon/r600.c | 16 ++++++++++++++++ drivers/gpu/drm/radeon/r600_blit_kms.c | 4 ++-- 3 files changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/radeon/evergreen_blit_kms.c b/drivers/gpu/drm/radeon/evergreen_blit_kms.c index dcf11bb..e9aeeed 100644 --- a/drivers/gpu/drm/radeon/evergreen_blit_kms.c +++ b/drivers/gpu/drm/radeon/evergreen_blit_kms.c @@ -613,9 +613,9 @@ int evergreen_blit_init(struct radeon_device *rdev) rdev->r600_blit.primitives.set_default_state = set_default_state; rdev->r600_blit.ring_size_common = 55; /* shaders + def state */ - rdev->r600_blit.ring_size_common += 10; /* fence emit for VB IB */ + rdev->r600_blit.ring_size_common += 16; /* fence emit for VB IB */ rdev->r600_blit.ring_size_common += 5; /* done copy */ - rdev->r600_blit.ring_size_common += 10; /* fence emit for done copy */ + rdev->r600_blit.ring_size_common += 16; /* fence emit for done copy */ rdev->r600_blit.ring_size_per_loop = 74; diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 12470b0..1f007ad 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -2331,6 +2331,14 @@ void r600_fence_ring_emit(struct radeon_device *rdev, if (rdev->wb.use_event) { u64 addr = rdev->wb.gpu_addr + R600_WB_EVENT_OFFSET + (u64)(rdev->fence_drv.scratch_reg - rdev->scratch.reg_base); + /* flush read cache over gart */ + radeon_ring_write(rdev, PACKET3(PACKET3_SURFACE_SYNC, 3)); + radeon_ring_write(rdev, PACKET3_TC_ACTION_ENA | + PACKET3_VC_ACTION_ENA | + PACKET3_SH_ACTION_ENA); + radeon_ring_write(rdev, 0xFFFFFFFF); + radeon_ring_write(rdev, 0); + radeon_ring_write(rdev, 10); /* poll interval */ /* EVENT_WRITE_EOP - flush caches, send int */ radeon_ring_write(rdev, PACKET3(PACKET3_EVENT_WRITE_EOP, 4)); radeon_ring_write(rdev, EVENT_TYPE(CACHE_FLUSH_AND_INV_EVENT_TS) | EVENT_INDEX(5)); @@ -2339,6 +2347,14 @@ void r600_fence_ring_emit(struct radeon_device *rdev, radeon_ring_write(rdev, fence->seq); radeon_ring_write(rdev, 0); } else { + /* flush read cache over gart */ + radeon_ring_write(rdev, PACKET3(PACKET3_SURFACE_SYNC, 3)); + radeon_ring_write(rdev, PACKET3_TC_ACTION_ENA | + PACKET3_VC_ACTION_ENA | + PACKET3_SH_ACTION_ENA); + radeon_ring_write(rdev, 0xFFFFFFFF); + radeon_ring_write(rdev, 0); + radeon_ring_write(rdev, 10); /* poll interval */ radeon_ring_write(rdev, PACKET3(PACKET3_EVENT_WRITE, 0)); radeon_ring_write(rdev, EVENT_TYPE(CACHE_FLUSH_AND_INV_EVENT) | EVENT_INDEX(0)); /* wait for 3D idle clean */ diff --git a/drivers/gpu/drm/radeon/r600_blit_kms.c b/drivers/gpu/drm/radeon/r600_blit_kms.c index c4cf130..36e62f2 100644 --- a/drivers/gpu/drm/radeon/r600_blit_kms.c +++ b/drivers/gpu/drm/radeon/r600_blit_kms.c @@ -500,9 +500,9 @@ int r600_blit_init(struct radeon_device *rdev) rdev->r600_blit.primitives.set_default_state = set_default_state; rdev->r600_blit.ring_size_common = 40; /* shaders + def state */ - rdev->r600_blit.ring_size_common += 10; /* fence emit for VB IB */ + rdev->r600_blit.ring_size_common += 16; /* fence emit for VB IB */ rdev->r600_blit.ring_size_common += 5; /* done copy */ - rdev->r600_blit.ring_size_common += 10; /* fence emit for done copy */ + rdev->r600_blit.ring_size_common += 16; /* fence emit for done copy */ rdev->r600_blit.ring_size_per_loop = 76; /* set_render_target emits 2 extra dwords on rv6xx */ -- 1.7.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
