From 897eba827e8659a03a1b2f4e74389691f824783f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michel=20D=C3=A4nzer?= Date: Wed, 17 Sep 2014 16:25:55 +0900 Subject: [PATCH] drm/radeon: Disable HDP flush before every CS again for < r600 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit It was causing display corruption with R300 generation GPUs at least. Reported-and-Tested-by: Mikael Pettersson Signed-off-by: Michel Dänzer Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/r100.c | 28 ++++++++++++++-------------- drivers/gpu/drm/radeon/radeon_asic.c | 2 -- drivers/gpu/drm/radeon/radeon_asic.h | 3 +-- drivers/gpu/drm/radeon/radeon_drv.c | 2 +- 4 files changed, 16 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 4c5ec44ff32..b0098e792e6 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -821,6 +821,20 @@ u32 r100_get_vblank_counter(struct radeon_device *rdev, int crtc) return RREG32(RADEON_CRTC2_CRNT_FRAME); } +/** + * r100_ring_hdp_flush - flush Host Data Path via the ring buffer + * rdev: radeon device structure + * ring: ring buffer struct for emitting packets + */ +static void r100_ring_hdp_flush(struct radeon_device *rdev, struct radeon_ring *ring) +{ + radeon_ring_write(ring, PACKET0(RADEON_HOST_PATH_CNTL, 0)); + radeon_ring_write(ring, rdev->config.r100.hdp_cntl | + RADEON_HDP_READ_BUFFER_INVALIDATE); + radeon_ring_write(ring, PACKET0(RADEON_HOST_PATH_CNTL, 0)); + radeon_ring_write(ring, rdev->config.r100.hdp_cntl); +} + /* Who ever call radeon_fence_emit should call ring_lock and ask * for enough space (today caller are ib schedule and buffer move) */ void r100_fence_ring_emit(struct radeon_device *rdev, @@ -1056,20 +1070,6 @@ void r100_gfx_set_wptr(struct radeon_device *rdev, (void)RREG32(RADEON_CP_RB_WPTR); } -/** - * r100_ring_hdp_flush - flush Host Data Path via the ring buffer - * rdev: radeon device structure - * ring: ring buffer struct for emitting packets - */ -void r100_ring_hdp_flush(struct radeon_device *rdev, struct radeon_ring *ring) -{ - radeon_ring_write(ring, PACKET0(RADEON_HOST_PATH_CNTL, 0)); - radeon_ring_write(ring, rdev->config.r100.hdp_cntl | - RADEON_HDP_READ_BUFFER_INVALIDATE); - radeon_ring_write(ring, PACKET0(RADEON_HOST_PATH_CNTL, 0)); - radeon_ring_write(ring, rdev->config.r100.hdp_cntl); -} - static void r100_cp_load_microcode(struct radeon_device *rdev) { const __be32 *fw_data; diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c index eeeeabe0975..2dd5847f9b9 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.c +++ b/drivers/gpu/drm/radeon/radeon_asic.c @@ -185,7 +185,6 @@ static struct radeon_asic_ring r100_gfx_ring = { .get_rptr = &r100_gfx_get_rptr, .get_wptr = &r100_gfx_get_wptr, .set_wptr = &r100_gfx_set_wptr, - .hdp_flush = &r100_ring_hdp_flush, }; static struct radeon_asic r100_asic = { @@ -332,7 +331,6 @@ static struct radeon_asic_ring r300_gfx_ring = { .get_rptr = &r100_gfx_get_rptr, .get_wptr = &r100_gfx_get_wptr, .set_wptr = &r100_gfx_set_wptr, - .hdp_flush = &r100_ring_hdp_flush, }; static struct radeon_asic r300_asic = { diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h index 275a5dc0178..7756bc1e1cd 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -148,8 +148,7 @@ u32 r100_gfx_get_wptr(struct radeon_device *rdev, struct radeon_ring *ring); void r100_gfx_set_wptr(struct radeon_device *rdev, struct radeon_ring *ring); -void r100_ring_hdp_flush(struct radeon_device *rdev, - struct radeon_ring *ring); + /* * r200,rv250,rs300,rv280 */ diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index 8df88890883..e8545be7d58 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -83,7 +83,7 @@ * CIK: 1D and linear tiling modes contain valid PIPE_CONFIG * 2.39.0 - Add INFO query for number of active CUs * 2.40.0 - Add RADEON_GEM_GTT_WC/UC, flush HDP cache before submitting - * CS to GPU + * CS to GPU on >= r600 */ #define KMS_DRIVER_MAJOR 2 #define KMS_DRIVER_MINOR 40 -- 2.46.0