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From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
To: Jassi Brar <jassisinghbrar@gmail.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	Chun-Kuang Hu <chunkuang.hu@kernel.org>
Subject: [PATCH 4/4] drm/mediatek: Detect CMDQ execution timeout
Date: Mon, 28 Sep 2020 07:04:22 +0800	[thread overview]
Message-ID: <20200927230422.11610-5-chunkuang.hu@kernel.org> (raw)
In-Reply-To: <20200927230422.11610-1-chunkuang.hu@kernel.org>

CMDQ is used to update display register in vblank period, so
it should be execute in next vblank. If it fail to execute
in next 2 vblank, tiemout happen.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index f99c9d2032b8..71f770e25ad2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -52,6 +52,7 @@ struct mtk_drm_crtc {
 	struct mbox_client		cmdq_cl;
 	struct mbox_chan		*cmdq_chan;
 	u32				cmdq_event;
+	u32				cmdq_vblank_cnt;
 #endif
 
 	struct device			*mmsys_dev;
@@ -244,6 +245,7 @@ static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
 	struct mtk_drm_crtc *mtk_crtc = container_of(cl, struct mtk_drm_crtc, cmdq_cl);
 	struct cmdq_cb_data *data = mssg;
 
+	mtk_crtc->cmdq_vblank_cnt = 0;
 	cmdq_pkt_destroy(mtk_crtc->cmdq_chan, data->pkt);
 }
 #endif
@@ -494,6 +496,11 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
 					   cmdq_handle->pa_base,
 					   cmdq_handle->cmd_buf_size,
 					   DMA_TO_DEVICE);
+		/*
+		 * CMDQ command should execute in next vblank,
+		 * If it fail to execute in next 2 vblank, timeout happen.
+		 */
+		mtk_crtc->cmdq_vblank_cnt = 2;
 		cmdq_pkt_flush_async(mtk_crtc->cmdq_chan, cmdq_handle);
 	}
 #endif
@@ -674,10 +681,14 @@ void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp)
 
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 	if (!priv->data->shadow_register && !mtk_crtc->cmdq_chan)
+		mtk_crtc_ddp_config(crtc, NULL);
+	else if (mtk_crtc->cmdq_vblank_cnt && --mtk_crtc->cmdq_vblank_cnt == 0)
+		DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
+			  drm_crtc_index(&mtk_crtc->base));
 #else
 	if (!priv->data->shadow_register)
-#endif
 		mtk_crtc_ddp_config(crtc, NULL);
+#endif
 
 	mtk_drm_finish_page_flip(mtk_crtc);
 }
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
To: Jassi Brar <jassisinghbrar@gmail.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
	Chun-Kuang Hu <chunkuang.hu@kernel.org>,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 4/4] drm/mediatek: Detect CMDQ execution timeout
Date: Mon, 28 Sep 2020 07:04:22 +0800	[thread overview]
Message-ID: <20200927230422.11610-5-chunkuang.hu@kernel.org> (raw)
In-Reply-To: <20200927230422.11610-1-chunkuang.hu@kernel.org>

CMDQ is used to update display register in vblank period, so
it should be execute in next vblank. If it fail to execute
in next 2 vblank, tiemout happen.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index f99c9d2032b8..71f770e25ad2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -52,6 +52,7 @@ struct mtk_drm_crtc {
 	struct mbox_client		cmdq_cl;
 	struct mbox_chan		*cmdq_chan;
 	u32				cmdq_event;
+	u32				cmdq_vblank_cnt;
 #endif
 
 	struct device			*mmsys_dev;
@@ -244,6 +245,7 @@ static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
 	struct mtk_drm_crtc *mtk_crtc = container_of(cl, struct mtk_drm_crtc, cmdq_cl);
 	struct cmdq_cb_data *data = mssg;
 
+	mtk_crtc->cmdq_vblank_cnt = 0;
 	cmdq_pkt_destroy(mtk_crtc->cmdq_chan, data->pkt);
 }
 #endif
@@ -494,6 +496,11 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
 					   cmdq_handle->pa_base,
 					   cmdq_handle->cmd_buf_size,
 					   DMA_TO_DEVICE);
+		/*
+		 * CMDQ command should execute in next vblank,
+		 * If it fail to execute in next 2 vblank, timeout happen.
+		 */
+		mtk_crtc->cmdq_vblank_cnt = 2;
 		cmdq_pkt_flush_async(mtk_crtc->cmdq_chan, cmdq_handle);
 	}
 #endif
@@ -674,10 +681,14 @@ void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp)
 
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 	if (!priv->data->shadow_register && !mtk_crtc->cmdq_chan)
+		mtk_crtc_ddp_config(crtc, NULL);
+	else if (mtk_crtc->cmdq_vblank_cnt && --mtk_crtc->cmdq_vblank_cnt == 0)
+		DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
+			  drm_crtc_index(&mtk_crtc->base));
 #else
 	if (!priv->data->shadow_register)
-#endif
 		mtk_crtc_ddp_config(crtc, NULL);
+#endif
 
 	mtk_drm_finish_page_flip(mtk_crtc);
 }
-- 
2.17.1


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
To: Jassi Brar <jassisinghbrar@gmail.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
	Chun-Kuang Hu <chunkuang.hu@kernel.org>,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 4/4] drm/mediatek: Detect CMDQ execution timeout
Date: Mon, 28 Sep 2020 07:04:22 +0800	[thread overview]
Message-ID: <20200927230422.11610-5-chunkuang.hu@kernel.org> (raw)
In-Reply-To: <20200927230422.11610-1-chunkuang.hu@kernel.org>

CMDQ is used to update display register in vblank period, so
it should be execute in next vblank. If it fail to execute
in next 2 vblank, tiemout happen.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index f99c9d2032b8..71f770e25ad2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -52,6 +52,7 @@ struct mtk_drm_crtc {
 	struct mbox_client		cmdq_cl;
 	struct mbox_chan		*cmdq_chan;
 	u32				cmdq_event;
+	u32				cmdq_vblank_cnt;
 #endif
 
 	struct device			*mmsys_dev;
@@ -244,6 +245,7 @@ static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
 	struct mtk_drm_crtc *mtk_crtc = container_of(cl, struct mtk_drm_crtc, cmdq_cl);
 	struct cmdq_cb_data *data = mssg;
 
+	mtk_crtc->cmdq_vblank_cnt = 0;
 	cmdq_pkt_destroy(mtk_crtc->cmdq_chan, data->pkt);
 }
 #endif
@@ -494,6 +496,11 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
 					   cmdq_handle->pa_base,
 					   cmdq_handle->cmd_buf_size,
 					   DMA_TO_DEVICE);
+		/*
+		 * CMDQ command should execute in next vblank,
+		 * If it fail to execute in next 2 vblank, timeout happen.
+		 */
+		mtk_crtc->cmdq_vblank_cnt = 2;
 		cmdq_pkt_flush_async(mtk_crtc->cmdq_chan, cmdq_handle);
 	}
 #endif
@@ -674,10 +681,14 @@ void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp)
 
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 	if (!priv->data->shadow_register && !mtk_crtc->cmdq_chan)
+		mtk_crtc_ddp_config(crtc, NULL);
+	else if (mtk_crtc->cmdq_vblank_cnt && --mtk_crtc->cmdq_vblank_cnt == 0)
+		DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
+			  drm_crtc_index(&mtk_crtc->base));
 #else
 	if (!priv->data->shadow_register)
-#endif
 		mtk_crtc_ddp_config(crtc, NULL);
+#endif
 
 	mtk_drm_finish_page_flip(mtk_crtc);
 }
-- 
2.17.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
To: Jassi Brar <jassisinghbrar@gmail.com>,
	Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
	Chun-Kuang Hu <chunkuang.hu@kernel.org>,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 4/4] drm/mediatek: Detect CMDQ execution timeout
Date: Mon, 28 Sep 2020 07:04:22 +0800	[thread overview]
Message-ID: <20200927230422.11610-5-chunkuang.hu@kernel.org> (raw)
In-Reply-To: <20200927230422.11610-1-chunkuang.hu@kernel.org>

CMDQ is used to update display register in vblank period, so
it should be execute in next vblank. If it fail to execute
in next 2 vblank, tiemout happen.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index f99c9d2032b8..71f770e25ad2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -52,6 +52,7 @@ struct mtk_drm_crtc {
 	struct mbox_client		cmdq_cl;
 	struct mbox_chan		*cmdq_chan;
 	u32				cmdq_event;
+	u32				cmdq_vblank_cnt;
 #endif
 
 	struct device			*mmsys_dev;
@@ -244,6 +245,7 @@ static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
 	struct mtk_drm_crtc *mtk_crtc = container_of(cl, struct mtk_drm_crtc, cmdq_cl);
 	struct cmdq_cb_data *data = mssg;
 
+	mtk_crtc->cmdq_vblank_cnt = 0;
 	cmdq_pkt_destroy(mtk_crtc->cmdq_chan, data->pkt);
 }
 #endif
@@ -494,6 +496,11 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
 					   cmdq_handle->pa_base,
 					   cmdq_handle->cmd_buf_size,
 					   DMA_TO_DEVICE);
+		/*
+		 * CMDQ command should execute in next vblank,
+		 * If it fail to execute in next 2 vblank, timeout happen.
+		 */
+		mtk_crtc->cmdq_vblank_cnt = 2;
 		cmdq_pkt_flush_async(mtk_crtc->cmdq_chan, cmdq_handle);
 	}
 #endif
@@ -674,10 +681,14 @@ void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp)
 
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 	if (!priv->data->shadow_register && !mtk_crtc->cmdq_chan)
+		mtk_crtc_ddp_config(crtc, NULL);
+	else if (mtk_crtc->cmdq_vblank_cnt && --mtk_crtc->cmdq_vblank_cnt == 0)
+		DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
+			  drm_crtc_index(&mtk_crtc->base));
 #else
 	if (!priv->data->shadow_register)
-#endif
 		mtk_crtc_ddp_config(crtc, NULL);
+#endif
 
 	mtk_drm_finish_page_flip(mtk_crtc);
 }
-- 
2.17.1

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  parent reply	other threads:[~2020-09-27 23:04 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-27 23:04 [PATCH 0/4] Mediatek DRM driver detect CMDQ execution timeout by vblank IRQ Chun-Kuang Hu
2020-09-27 23:04 ` Chun-Kuang Hu
2020-09-27 23:04 ` Chun-Kuang Hu
2020-09-27 23:04 ` Chun-Kuang Hu
2020-09-27 23:04 ` [PATCH 1/4] soc / drm: mediatek: cmdq: Remove timeout handler in helper function Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04 ` [PATCH 2/4] mailbox / soc / drm: mediatek: Use mailbox rx_callback instead of cmdq_task_cb Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04 ` [PATCH 3/4] mailbox / soc / drm: mediatek: Remove struct cmdq_client Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04 ` Chun-Kuang Hu [this message]
2020-09-27 23:04   ` [PATCH 4/4] drm/mediatek: Detect CMDQ execution timeout Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-09-27 23:04   ` Chun-Kuang Hu
2020-10-02 20:29 ` [PATCH 0/4] Mediatek DRM driver detect CMDQ execution timeout by vblank IRQ Jassi Brar
2020-10-02 20:29   ` Jassi Brar
2020-10-02 20:29   ` Jassi Brar
2020-10-02 20:29   ` Jassi Brar
2020-10-03  3:22   ` Chun-Kuang Hu
2020-10-03  3:22     ` Chun-Kuang Hu
2020-10-03  3:22     ` Chun-Kuang Hu
2020-10-03  3:22     ` Chun-Kuang Hu

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