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[2001:14ba:a00e:a300:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id w13-20020ac254ad000000b00512e5bd2296sm522931lfk.217.2024.02.25.06.12.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 Feb 2024 06:12:48 -0800 (PST) From: Dmitry Baryshkov Date: Sun, 25 Feb 2024 16:12:46 +0200 Subject: [PATCH v3 1/3] drm/msm/dpu: make "vblank timeout" more useful 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: <20240225-fd-dpu-debug-timeout-v3-1-252f2b21cdcc@linaro.org> References: <20240225-fd-dpu-debug-timeout-v3-0-252f2b21cdcc@linaro.org> In-Reply-To: <20240225-fd-dpu-debug-timeout-v3-0-252f2b21cdcc@linaro.org> To: Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter Cc: Steev Klimaszewski , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Dmitry Baryshkov X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1057; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=A4/oTwY5JpAU9dbsu93L7dZvCPx7K/2ZR18bKOeKyl0=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBl20rfZOXUMpqNliF8fh0oH/0RuleHVyeXPPDGe FISdoya/+aJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZdtK3wAKCRCLPIo+Aiko 1TuEB/0Z/hHj29uzA3HA/VxFscGLzDGqyZUj4/ANTvm9EjAYa0jQ1LJccv3i1tiK0jnqxIWiFoc wnYLHUf5Gnp42YrF0h8S+uPIOX5nmPadqvtKmBuY8GzoZs9/IYY7ggAMzbGf3HnQHDc4y6/kAbH 1QNNrifLpUq5wHtBq3a5QE/uZO+cXGp4ozHDQM04cEUW26qvjCcR6bMADk0Ft777z41tCostXqI VLDhiefC7by6PVbjx5VTY5fVKqRr1rDR7DNWIy75ZRDDVSml1SirAMOr9nydO1UNltGDhVZgcGu ucU+IKr4qLybtRBJaNN67n4kqWQAKakPMqnsRgbLBCnrO3nT X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A We have several reports of vblank timeout messages. However after some debugging it was found that there might be different causes to that. To allow us to identify the DPU block that gets stuck, include the actual CTL_FLUSH value into the timeout message. Signed-off-by: Dmitry Baryshkov Reviewed-by: Abhinav Kumar --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers= /gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c index 2aa72b578764..6058706f03e4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c @@ -480,7 +480,7 @@ static int dpu_encoder_phys_vid_wait_for_commit_done( (hw_ctl->ops.get_flush_register(hw_ctl) =3D=3D 0), msecs_to_jiffies(50)); if (ret <=3D 0) { - DPU_ERROR("vblank timeout\n"); + DPU_ERROR("vblank timeout: %x\n", hw_ctl->ops.get_flush_register(hw_ctl)= ); return -ETIMEDOUT; } =20 --=20 2.39.2 From nobody Mon Feb 9 04:28:46 2026 Received: from mail-lf1-f43.google.com (mail-lf1-f43.google.com [209.85.167.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E8396134B1 for ; Sun, 25 Feb 2024 14:12:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.43 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708870374; cv=none; b=d4NFra4833nW4X7V+2w+q7VybeiMgJy3Kiv+9szQT0xrT33FpMweARRiqKISaCXfRYAPtrHAU1c/BTo9OdQ4tb/wzqMEd7gBoD04uTD18/iQupVY/rU9pCNSQmjNKl5GmRqF7m3dABippK/vJcEczMqsC4+cvSCUxPlt6LF/BkU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708870374; c=relaxed/simple; bh=4+p20gFGBfsm1TzLgabMIRSGbsT/TwxhyM1Y0Pi2MaI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=uXMJlA9qJXJZ9GHmshv1lC09wH49yGhE3QWr8F4vkVGYohI8JONZQ6BXr2412PKo9+qVdiSxsEjMZM7LgkkE8bqGMg5lNlgEemgJ7EKsM6k1L/QW6RmhZ7WkWYI0QG9HVlblIifK3gLcjEVQFU2jzLLNJ0D097KY1OuXhLgzJCE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=T5U7+mwT; arc=none smtp.client-ip=209.85.167.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="T5U7+mwT" Received: by mail-lf1-f43.google.com with SMTP id 2adb3069b0e04-512f54fc2dbso764952e87.1 for ; Sun, 25 Feb 2024 06:12:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1708870371; x=1709475171; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Tjno7HMc44jNAwGe0pRLX3fSYJzYBO6KHE8KOaNyqJk=; b=T5U7+mwTeKlT3Ylcu3PUWxjf+OVU47mvGGhAiZUsBvF0q3PTMVLOuoeyd5TvSP9qM9 ayh6wXxrLncaTDccO3/JN5VJqUE9iHdmqwOn1gIYeZuXTnhXiGU5YNw4UgeY91dx62Dk PjvjTGvFn7bEgPrdBK0uE0Tn5Sk2Zw5Om53vskAy/aNI6B3Q6ggOHkcZxPG/F5PE2YCA U9k9+WBPDA819C/JvX1bm0Y+u2N6Z/UeAG5T++W8z+amfNyCAixTiqvFxCWKNNn3G1/8 icgaO8DbTNd80HqboeRqbq83k/doKdHDJsKtqUKnoXu5CVksKBUdGAK0VIjctWjD5be0 EjUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708870371; x=1709475171; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Tjno7HMc44jNAwGe0pRLX3fSYJzYBO6KHE8KOaNyqJk=; b=fuXiic2EjEc+O98WTN9CD9ANbUZrx/tvI7K4WufqUTsxVv1DwAzby1eBbnw43WikIb zCRrjAoOCYjWVxdqRHJapgFR1bPhJcPYXywvIfk+tOmAv0H/Hdkt0GY6HfGxfOAxEudG F3FSIjKTF/+w+kyMwhQ8ma8ISdPmHaWfntfif79CUSDD2yxKnCQS+oJG+uZljEVeM9r7 bC4UsVxC3iGHRvAiAqAjhsosgEA1dywd33EW1tulEibcbzV7ZJEs+7afUwBa//pZUgqo IvEPfzATlxQJQb+i4sSbXSWwETPbVXgtDkHbuabzi7tfRnMQR8yL6M35QILXQpZ8XWhY VCtA== X-Forwarded-Encrypted: i=1; AJvYcCUdSbkr6GnWQjy6lHr3ve5tXFsWISvBRhcYrSFk/CiEuH8fq8FcOdSMS3RyeB6Y38AoBeLycsWlam1sIWX6p+ADrU/infz5EMpPBU0P X-Gm-Message-State: AOJu0YztQ5JAxWcBmBot4RBJd/UambXPm/SBQ0NrnTuYjwd/fDtaF55m pP3c3xZydRtDHB9LAUmju/slLEbcOz/qZcdD3V1Qw4H2dwweqaNrkIKN+EHVngI= X-Google-Smtp-Source: AGHT+IHCgtepImcNKJtX+cxhzdabpC0oFc/g1ZX06TiPwdYPloR5Ihby9OoUN6SMIY24COyKtqfIaA== X-Received: by 2002:a05:6512:239b:b0:512:fe25:5226 with SMTP id c27-20020a056512239b00b00512fe255226mr29094lfv.55.1708870370964; Sun, 25 Feb 2024 06:12:50 -0800 (PST) Received: from umbar.lan (dzyjmhybhls-s--zn36gy-3.rev.dnainternet.fi. [2001:14ba:a00e:a300:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id w13-20020ac254ad000000b00512e5bd2296sm522931lfk.217.2024.02.25.06.12.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 Feb 2024 06:12:50 -0800 (PST) From: Dmitry Baryshkov Date: Sun, 25 Feb 2024 16:12:47 +0200 Subject: [PATCH v3 2/3] drm/msm/dpu: split dpu_encoder_wait_for_event into two functions 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: <20240225-fd-dpu-debug-timeout-v3-2-252f2b21cdcc@linaro.org> References: <20240225-fd-dpu-debug-timeout-v3-0-252f2b21cdcc@linaro.org> In-Reply-To: <20240225-fd-dpu-debug-timeout-v3-0-252f2b21cdcc@linaro.org> To: Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter Cc: Steev Klimaszewski , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Dmitry Baryshkov X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=7184; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=4+p20gFGBfsm1TzLgabMIRSGbsT/TwxhyM1Y0Pi2MaI=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBl20rfd/iXDzs195du3nz9bP1NLN9duQ0Qez0KO JnVDsV6tFuJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZdtK3wAKCRCLPIo+Aiko 1ZlUCACygLLCskenyxtIgNoFEiLgSKaidvYAPKV0C5zXnMpV03QW/cKdBmpyTxoIPWEpozUS+Cy FAqxNIB/KB1cloNaY/hLsGwtWXxFnoDvZRaNOWzGORHHJl50v+5nd2nLskdUX9JTI3xjOabXlpy /UhjDuY8bfO1A/4v1PC1UawcPDF41Ue/AsM4iJy2RU5oy8n2T7rkOcKR60lgk70hFK8Vi1QIfDN 5Dj0Bikx+EcZhNwUF0vA8IWGX/zU5itt2KlxJE38hhk/W/abzkL2Of2Ul9XkfC8EPQH+LpKiWfz sq81X87CZUiiW7Na4fduVdnM32DrmlDlJ6GnhY25AS+FnLUk X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Stop multiplexing several events via the dpu_encoder_wait_for_event() function. Split it into two distinct functions two allow separate handling of those events. Signed-off-by: Dmitry Baryshkov Reviewed-by: Abhinav Kumar --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 74 +++++++++++++++++++++----= ---- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 22 ++------- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 2 +- drivers/gpu/drm/msm/msm_drv.h | 10 ---- 4 files changed, 59 insertions(+), 49 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/= msm/disp/dpu1/dpu_encoder.c index 194dbb08331d..30f349c8a1e5 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -1282,7 +1282,7 @@ static void dpu_encoder_virt_atomic_disable(struct dr= m_encoder *drm_enc, trace_dpu_enc_disable(DRMID(drm_enc)); =20 /* wait for idle */ - dpu_encoder_wait_for_event(drm_enc, MSM_ENC_TX_COMPLETE); + dpu_encoder_wait_for_tx_complete(drm_enc); =20 dpu_encoder_resource_control(drm_enc, DPU_ENC_RC_EVENT_PRE_STOP); =20 @@ -2402,10 +2402,23 @@ struct drm_encoder *dpu_encoder_init(struct drm_dev= ice *dev, return &dpu_enc->base; } =20 -int dpu_encoder_wait_for_event(struct drm_encoder *drm_enc, - enum msm_event_wait event) +/** + * dpu_encoder_wait_for_commit_done() - Wait for encoder to flush pending = state + * @drm_enc: encoder pointer + * + * Wait for hardware to have flushed the current pending frames to hardwar= e at + * a vblank or ctl_start Encoders will map this differently depending on t= he + * panel type. + * + * MSM_ENC_TX_COMPLETE - Wait for the hardware to transfer all the pixels= to + * the panel. Encoders will map this differently + * depending on the panel type. + * vid mode -> vsync_irq + * cmd mode -> pp_done + * Return: 0 on success, -EWOULDBLOCK if already signaled, error otherwise + */ +int dpu_encoder_wait_for_commit_done(struct drm_encoder *drm_enc) { - int (*fn_wait)(struct dpu_encoder_phys *phys_enc) =3D NULL; struct dpu_encoder_virt *dpu_enc =3D NULL; int i, ret =3D 0; =20 @@ -2419,23 +2432,46 @@ int dpu_encoder_wait_for_event(struct drm_encoder *= drm_enc, for (i =3D 0; i < dpu_enc->num_phys_encs; i++) { struct dpu_encoder_phys *phys =3D dpu_enc->phys_encs[i]; =20 - switch (event) { - case MSM_ENC_COMMIT_DONE: - fn_wait =3D phys->ops.wait_for_commit_done; - break; - case MSM_ENC_TX_COMPLETE: - fn_wait =3D phys->ops.wait_for_tx_complete; - break; - default: - DPU_ERROR_ENC(dpu_enc, "unknown wait event %d\n", - event); - return -EINVAL; + if (phys->ops.wait_for_commit_done) { + DPU_ATRACE_BEGIN("wait_for_commit_done"); + ret =3D phys->ops.wait_for_commit_done(phys); + DPU_ATRACE_END("wait_for_commit_done"); + if (ret) + return ret; } + } + + return ret; +} + +/** + * dpu_encoder_wait_for_tx_complete() - Wait for encoder to transfer pixel= s to panel + * @drm_enc: encoder pointer + * + * Wait for the hardware to transfer all the pixels to the panel. Encoders= will + * map this differently depending on the panel type. + * + * Return: 0 on success, -EWOULDBLOCK if already signaled, error otherwise + */ +int dpu_encoder_wait_for_tx_complete(struct drm_encoder *drm_enc) +{ + struct dpu_encoder_virt *dpu_enc =3D NULL; + int i, ret =3D 0; + + if (!drm_enc) { + DPU_ERROR("invalid encoder\n"); + return -EINVAL; + } + dpu_enc =3D to_dpu_encoder_virt(drm_enc); + DPU_DEBUG_ENC(dpu_enc, "\n"); + + for (i =3D 0; i < dpu_enc->num_phys_encs; i++) { + struct dpu_encoder_phys *phys =3D dpu_enc->phys_encs[i]; =20 - if (fn_wait) { - DPU_ATRACE_BEGIN("wait_for_completion_event"); - ret =3D fn_wait(phys); - DPU_ATRACE_END("wait_for_completion_event"); + if (phys->ops.wait_for_tx_complete) { + DPU_ATRACE_BEGIN("wait_for_tx_complete"); + ret =3D phys->ops.wait_for_tx_complete(phys); + DPU_ATRACE_END("wait_for_tx_complete"); if (ret) return ret; } diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/= msm/disp/dpu1/dpu_encoder.h index fe6b1d312a74..0c928d1876e4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h @@ -93,25 +93,9 @@ void dpu_encoder_kickoff(struct drm_encoder *encoder); */ int dpu_encoder_vsync_time(struct drm_encoder *drm_enc, ktime_t *wakeup_ti= me); =20 -/** - * dpu_encoder_wait_for_event - Waits for encoder events - * @encoder: encoder pointer - * @event: event to wait for - * MSM_ENC_COMMIT_DONE - Wait for hardware to have flushed the current pe= nding - * frames to hardware at a vblank or ctl_start - * Encoders will map this differently depending on = the - * panel type. - * vid mode -> vsync_irq - * cmd mode -> ctl_start - * MSM_ENC_TX_COMPLETE - Wait for the hardware to transfer all the pixels= to - * the panel. Encoders will map this differently - * depending on the panel type. - * vid mode -> vsync_irq - * cmd mode -> pp_done - * Returns: 0 on success, -EWOULDBLOCK if already signaled, error otherwise - */ -int dpu_encoder_wait_for_event(struct drm_encoder *drm_encoder, - enum msm_event_wait event); +int dpu_encoder_wait_for_commit_done(struct drm_encoder *drm_encoder); + +int dpu_encoder_wait_for_tx_complete(struct drm_encoder *drm_encoder); =20 /* * dpu_encoder_get_intf_mode - get interface mode of the given encoder diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/= disp/dpu1/dpu_kms.c index d6412395bacc..26b5e54031d9 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -476,7 +476,7 @@ static void dpu_kms_wait_for_commit_done(struct msm_kms= *kms, * mode panels. This may be a no-op for command mode panels. */ trace_dpu_kms_wait_for_commit_done(DRMID(crtc)); - ret =3D dpu_encoder_wait_for_event(encoder, MSM_ENC_COMMIT_DONE); + ret =3D dpu_encoder_wait_for_commit_done(encoder); if (ret && ret !=3D -EWOULDBLOCK) { DPU_ERROR("wait for commit done returned %d\n", ret); break; diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 762e13e2df74..91cf57f72321 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -74,16 +74,6 @@ enum msm_dsi_controller { #define MSM_GPU_MAX_RINGS 4 #define MAX_H_TILES_PER_DISPLAY 2 =20 -/** - * enum msm_event_wait - type of HW events to wait for - * @MSM_ENC_COMMIT_DONE - wait for the driver to flush the registers to HW - * @MSM_ENC_TX_COMPLETE - wait for the HW to transfer the frame to panel - */ -enum msm_event_wait { - MSM_ENC_COMMIT_DONE =3D 0, - MSM_ENC_TX_COMPLETE, -}; - /** * struct msm_display_topology - defines a display topology pipeline * @num_lm: number of layer mixers used --=20 2.39.2 From nobody Mon Feb 9 04:28:46 2026 Received: from mail-lj1-f170.google.com (mail-lj1-f170.google.com [209.85.208.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 74405134CE for ; Sun, 25 Feb 2024 14:12:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708870375; cv=none; b=R895PVE6rDs2wRg34UoA6Nfx9mBL7GLTHSePWDUhVuASZP1qyxsaN45BhYukNFpgKrOnzUL6fsdAcIck0emogIZdiY5KVj59lkhsoov6HSqv4mYM5ivc82MvQ3f4hVHnSEFY7u8leU8Z1cLSkpX48OUyjwJ+POphdXK+X9+/gYY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708870375; c=relaxed/simple; bh=kq1wMGjAFgykNjnALUOfiwVmAiWVNLEAtKXn23jQRrA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=u3i7+MGbQiKqGvMWUVIPv/LJxTeLiXLxDXEuc0/asn3zKo39NR0hPt2+dqgLAa2/T8PyI361bBFE7530laloPrzac2jrKgJt69aXLaOGV+dJgKnQU3ik3X6cocJeKCEaPsxBt3N6ItMGN+if1iJ5QJ7XLlOHl+qZTyqbQQwYV3E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=BOuBoxCs; arc=none smtp.client-ip=209.85.208.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="BOuBoxCs" Received: by mail-lj1-f170.google.com with SMTP id 38308e7fff4ca-2d2628e81b8so15871871fa.0 for ; Sun, 25 Feb 2024 06:12:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1708870372; x=1709475172; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=W1EgeiS53bZU89cWnjtfqhJ0Xbfd+zvllvWyAXpOfzo=; b=BOuBoxCsWGVQvmsi66WqX9fJIewAxtDUUJFBsxQvaQJYC2wUiwly2Vmh7e82LmMzjI 6Yl/TGelB1E5ZzIYnMVmWfl8EjmqC/BetBPg3tYhZcSQZZRkd4sS7s7qHM/7MNMnkDuv nxzp1LAuvI1okCeT4qcKxlw9jrjpQZXP7Z4gvZCl0bpxad0/YjH31kfAAJpP5H2RvDDO ZeZLfy2v3MhaGwwyDdl/vipsoOnzT+dvn4jzLyHresgUxHdYbZaj5I9Lomv0W1dKcJpX OHWZOYf4AXIWiNPtaVBd77zQhoKqnl54eI/GSoVzmcRI8YZSmM8U96orRd8Wlo6xPp48 mnNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708870372; x=1709475172; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=W1EgeiS53bZU89cWnjtfqhJ0Xbfd+zvllvWyAXpOfzo=; b=rP/7JCD0pwlJtq4J2pOj3oCL/2k64iKVg/b84syNom6urLLdnXo5ifspU8tk7z8uZS J7CReQwet5Wj/notavGDCGq+ep9lST7qDm/fCWbQeGH3a8vexGzcDFYvnEwQJA+uR1Ea qr+0/8citCF5l+SE00442Pc/6lTTXMOEC0udXnhvCvurfQ3VNxxSTvW/pGaNlrXlctUT yLnG8cYYxLuwHF/y4f0ii04V0N7EnTBy9G3aRqAkOtKi6XZZF54MKtOqgW5dwuTb/xdT F+y4W02B3+p2ZWPkRlabpquU8iUokaq/r1ZSwCxVWsVVryZPjMb9JBV9yhsglb13LYal DmBw== X-Forwarded-Encrypted: i=1; AJvYcCVD2kX0iq7rs/hMhwbUogbYo1z9Dv/mXoETy/MeB4c2EuBuPYHU+P7JXHQtVe6ElxLZixMPB/n0iVLvPIit3t6MJHM7PSlsCoItqhBd X-Gm-Message-State: AOJu0Yy1hkgZ6egdL2nzGJ2IRYLpnv0Rk9tWjR8QnecpxXK6LmebLdZW Jy8ud0wZ/OTOVrYKzdYZs+aWyzCmbIWbzNPLcQCu+N3Ibm1AXGfm/m0B4N7eTAM= X-Google-Smtp-Source: AGHT+IGDF5gFZnVV/AVUsZV5OqBJcSJBuROwG/Zy/8wkdCAhfxPNJhhBt9WEw3y137XfIL3bJJFROA== X-Received: by 2002:a05:6512:3087:b0:512:d7fb:8c8d with SMTP id z7-20020a056512308700b00512d7fb8c8dmr1562188lfd.23.1708870371781; Sun, 25 Feb 2024 06:12:51 -0800 (PST) Received: from umbar.lan (dzyjmhybhls-s--zn36gy-3.rev.dnainternet.fi. [2001:14ba:a00e:a300:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id w13-20020ac254ad000000b00512e5bd2296sm522931lfk.217.2024.02.25.06.12.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 25 Feb 2024 06:12:51 -0800 (PST) From: Dmitry Baryshkov Date: Sun, 25 Feb 2024 16:12:48 +0200 Subject: [PATCH v3 3/3] drm/msm/dpu: capture snapshot on the first commit_done timeout 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: <20240225-fd-dpu-debug-timeout-v3-3-252f2b21cdcc@linaro.org> References: <20240225-fd-dpu-debug-timeout-v3-0-252f2b21cdcc@linaro.org> In-Reply-To: <20240225-fd-dpu-debug-timeout-v3-0-252f2b21cdcc@linaro.org> To: Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter Cc: Steev Klimaszewski , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Dmitry Baryshkov X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2131; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=kq1wMGjAFgykNjnALUOfiwVmAiWVNLEAtKXn23jQRrA=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBl20rfZatQwbsnIGDdcoW5gLJWbqK0DBCsltFny PS9SGAxgeOJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZdtK3wAKCRCLPIo+Aiko 1UitB/wITuYU5p6dOOSUv1JzfYEmwL/GKKF0SC4IbGLssbPmSgUySdE9DqjlCPM6rj5vaVRx1Bk p+/ypYmnmyncdrYoAno3IJVFcBQWctCe5DyU6JvmrLk6gHLN8r+cKk7HyvhoFeH7F+WB1+S+NAt TpOAXWCqaCGaCqzPgN+J1h3J8xbsKPKUqymyjbnVtdrjfIfGsFqA79FJpUi4MFpCzEJMfiZod/J G2VBYphZ86mzY1WNA/wJlD6UN/LU9J9UEfCF0l+qulZoZ3SES+Tz369iyyFMAu2HjMlPBv76zGv mUzVOA9EOlu5Yn4BVYOLhdWQOd3W4KpdLHpA3kAbEB4eED82 X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A In order to debug commit_done timeouts, capture the devcoredump state when the first timeout occurs after the encoder has been enabled. Signed-off-by: Dmitry Baryshkov Reviewed-by: Abhinav Kumar --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/= msm/disp/dpu1/dpu_encoder.c index 30f349c8a1e5..3cae07bf0b9b 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -126,6 +126,8 @@ enum dpu_enc_rc_states { * @base: drm_encoder base class for registration with DRM * @enc_spinlock: Virtual-Encoder-Wide Spin Lock for IRQ purposes * @enabled: True if the encoder is active, protected by enc_lock + * @commit_done_timedout: True if there has been a timeout on commit after + * enabling the encoder. * @num_phys_encs: Actual number of physical encoders contained. * @phys_encs: Container of physical encoders managed. * @cur_master: Pointer to the current master in this mode. Optimization @@ -172,6 +174,7 @@ struct dpu_encoder_virt { spinlock_t enc_spinlock; =20 bool enabled; + bool commit_done_timedout; =20 unsigned int num_phys_encs; struct dpu_encoder_phys *phys_encs[MAX_PHYS_ENCODERS_PER_VIRTUAL]; @@ -1226,6 +1229,8 @@ static void dpu_encoder_virt_atomic_enable(struct drm= _encoder *drm_enc, else if (disp_info->intf_type =3D=3D INTF_DSI) dpu_enc->wide_bus_en =3D msm_dsi_wide_bus_enabled(priv->dsi[index]); =20 + dpu_enc->commit_done_timedout =3D false; + mutex_lock(&dpu_enc->enc_lock); cur_mode =3D &dpu_enc->base.crtc->state->adjusted_mode; =20 @@ -2436,6 +2441,10 @@ int dpu_encoder_wait_for_commit_done(struct drm_enco= der *drm_enc) DPU_ATRACE_BEGIN("wait_for_commit_done"); ret =3D phys->ops.wait_for_commit_done(phys); DPU_ATRACE_END("wait_for_commit_done"); + if (ret =3D=3D -ETIMEDOUT && !dpu_enc->commit_done_timedout) { + dpu_enc->commit_done_timedout =3D true; + msm_disp_snapshot_state(drm_enc->dev); + } if (ret) return ret; } --=20 2.39.2