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[212.216.221.196]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a93c297b7d6sm38862166b.162.2024.09.26.14.16.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2024 14:16:56 -0700 (PDT) From: Antonino Maniscalco Date: Thu, 26 Sep 2024 23:16:43 +0200 Subject: [PATCH v6 01/11] drm/msm: Fix bv_fence being used as bv_rptr Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240926-preemption-a750-t-v6-1-7b6e1ef3648f@gmail.com> References: <20240926-preemption-a750-t-v6-0-7b6e1ef3648f@gmail.com> In-Reply-To: <20240926-preemption-a750-t-v6-0-7b6e1ef3648f@gmail.com> To: Rob Clark , Sean Paul , Konrad Dybcio , Abhinav Kumar , Dmitry Baryshkov , Marijn Suijten , David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Jonathan Corbet Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Antonino Maniscalco , Akhil P Oommen , Neil Armstrong X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1727385413; l=1818; i=antomani103@gmail.com; s=20240815; h=from:subject:message-id; bh=8ChbnJhsvl1xm2NLNpkzia7Mqz9GSrQ1hXSsZqycXm8=; b=pHX2PTo2RuaylcDsM37sIS1jp15/MvbG2l9GP2Utp4rHO0/VlOujPmqW1J8fQKGaiGdPmbItq UxIOy8OFADSAANr2ahvBzateCWxQ5Wb7FPYUlk/96zJaBgcwJpjSuxB X-Developer-Key: i=antomani103@gmail.com; a=ed25519; pk=0zicFb38tVla+iHRo4kWpOMsmtUrpGBEa7LkFF81lyY= The bv_fence field of rbmemptrs was being used incorrectly as the BV rptr shadow pointer in some places. Add a bv_rptr field and change the code to use that instead. Reviewed-by: Akhil P Oommen Tested-by: Neil Armstrong # on SM8650-QRD Tested-by: Neil Armstrong # on SM8550-QRD Tested-by: Neil Armstrong # on SM8450-HDK Signed-off-by: Antonino Maniscalco --- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 2 +- drivers/gpu/drm/msm/msm_ringbuffer.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/ad= reno/a6xx_gpu.c index bcaec86ac67a5c90544922372cd46fbdd8cf359e..32a4faa93d7f072ea6b8d949f4d= c9d2a58cec6b9 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c @@ -1132,7 +1132,7 @@ static int hw_init(struct msm_gpu *gpu) /* ..which means "always" on A7xx, also for BV shadow */ if (adreno_is_a7xx(adreno_gpu)) { gpu_write64(gpu, REG_A7XX_CP_BV_RB_RPTR_ADDR, - rbmemptr(gpu->rb[0], bv_fence)); + rbmemptr(gpu->rb[0], bv_rptr)); } =20 /* Always come up on rb 0 */ diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.h b/drivers/gpu/drm/msm/msm= _ringbuffer.h index 0d6beb8cd39a7b297e73741d2018915246a710d4..40791b2ade46ef0e16e2a408829= 1a575d3be9e82 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.h +++ b/drivers/gpu/drm/msm/msm_ringbuffer.h @@ -31,6 +31,7 @@ struct msm_rbmemptrs { volatile uint32_t rptr; volatile uint32_t fence; /* Introduced on A7xx */ + volatile uint32_t bv_rptr; volatile uint32_t bv_fence; =20 volatile struct msm_gpu_submit_stats stats[MSM_GPU_SUBMIT_STATS_COUNT]; --=20 2.46.1