From: Dmitry Baryshkov dmitry.baryshkov@linaro.org
[ Upstream commit a7a4c19c36de1e4b99b06e4060ccc8ab837725bc ]
Rather than writing CP_PREEMPT_ENABLE_GLOBAL twice, follow the vendor kernel and set CP_PREEMPT_ENABLE_LOCAL register instead. a5xx_submit() will override it during submission, but let's get the sequence correct.
Fixes: b1fc2839d2f9 ("drm/msm: Implement preemption for A5XX targets") Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Patchwork: https://patchwork.freedesktop.org/patch/522638/ Link: https://lore.kernel.org/r/20230214020956.164473-2-dmitry.baryshkov@linaro.or... Signed-off-by: Rob Clark robdclark@chromium.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index 3dcec7acb3840..f8634fbeffda0 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -151,8 +151,8 @@ static void a5xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit) OUT_RING(ring, 1);
/* Enable local preemption for finegrain preemption */ - OUT_PKT7(ring, CP_PREEMPT_ENABLE_GLOBAL, 1); - OUT_RING(ring, 0x02); + OUT_PKT7(ring, CP_PREEMPT_ENABLE_LOCAL, 1); + OUT_RING(ring, 0x1);
/* Allow CP_CONTEXT_SWITCH_YIELD packets in the IB2 */ OUT_PKT7(ring, CP_YIELD_ENABLE, 1);