* [PATCH v5 0/6] CMDQ refinement of Mediatek DRM driver
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
These refinements include using standard mailbox callback interface,
timeout detection, and a fixed cmdq_handle.
Change in v5:
1. Move mbox_free_channel to a independent patch.
Change in v4:
1. Add cmdq_vblank_cnt initial value to 3.
2. Move mtk_drm_cmdq_pkt_create to the same define scope with
mtk_drm_cmdq_pkt_destroy.
Change in v3:
1. Revert "drm/mediatek: clear pending flag when cmdq packet is done"
and add it after the CMDQ refinement patches.
2. Change the remove of struct cmdq_client to remove the pointer of
struct cmdq_client.
3. Fix pkt buf alloc once but free many times.
Changes in v2:
1. Define mtk_drm_cmdq_pkt_create() and mtk_drm_cmdq_pkt_destroy()
when CONFIG_MTK_CMDQ is reachable.
Chun-Kuang Hu (4):
drm/mediatek: Use mailbox rx_callback instead of cmdq_task_cb
drm/mediatek: Remove the pointer of struct cmdq_client
drm/mediatek: Detect CMDQ execution timeout
drm/mediatek: Add cmdq_handle in mtk_crtc
Yongqiang Niu (1):
drm/mediatek: Clear pending flag when cmdq packet is done.
jason-jh.lin (1):
drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 174 ++++++++++++++++++++----
1 file changed, 150 insertions(+), 24 deletions(-)
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 40+ messages in thread
* [PATCH v5 0/6] CMDQ refinement of Mediatek DRM driver
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
These refinements include using standard mailbox callback interface,
timeout detection, and a fixed cmdq_handle.
Change in v5:
1. Move mbox_free_channel to a independent patch.
Change in v4:
1. Add cmdq_vblank_cnt initial value to 3.
2. Move mtk_drm_cmdq_pkt_create to the same define scope with
mtk_drm_cmdq_pkt_destroy.
Change in v3:
1. Revert "drm/mediatek: clear pending flag when cmdq packet is done"
and add it after the CMDQ refinement patches.
2. Change the remove of struct cmdq_client to remove the pointer of
struct cmdq_client.
3. Fix pkt buf alloc once but free many times.
Changes in v2:
1. Define mtk_drm_cmdq_pkt_create() and mtk_drm_cmdq_pkt_destroy()
when CONFIG_MTK_CMDQ is reachable.
Chun-Kuang Hu (4):
drm/mediatek: Use mailbox rx_callback instead of cmdq_task_cb
drm/mediatek: Remove the pointer of struct cmdq_client
drm/mediatek: Detect CMDQ execution timeout
drm/mediatek: Add cmdq_handle in mtk_crtc
Yongqiang Niu (1):
drm/mediatek: Clear pending flag when cmdq packet is done.
jason-jh.lin (1):
drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 174 ++++++++++++++++++++----
1 file changed, 150 insertions(+), 24 deletions(-)
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 40+ messages in thread
* [PATCH v5 1/6] drm/mediatek: Use mailbox rx_callback instead of cmdq_task_cb
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 2:18 ` jason-jh.lin
-1 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
rx_callback is a standard mailbox callback mechanism and could cover the
function of proprietary cmdq_task_cb, so use the standard one instead of
the proprietary one.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index a4e80e499674..369d3e68c0b6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -4,6 +4,8 @@
*/
#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/mailbox_controller.h>
#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
@@ -222,9 +224,11 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
-static void ddp_cmdq_cb(struct cmdq_cb_data data)
+static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
- cmdq_pkt_destroy(data.data);
+ struct cmdq_cb_data *data = mssg;
+
+ cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -475,7 +479,12 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
+ dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ cmdq_handle->pa_base,
+ cmdq_handle->cmd_buf_size,
+ DMA_TO_DEVICE);
+ mbox_send_message(mtk_crtc->cmdq_client->chan, cmdq_handle);
+ mbox_client_txdone(mtk_crtc->cmdq_client->chan, 0);
}
#endif
mtk_crtc->config_updating = false;
@@ -839,6 +848,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
}
if (mtk_crtc->cmdq_client) {
+ mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
--
2.18.0
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 1/6] drm/mediatek: Use mailbox rx_callback instead of cmdq_task_cb
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
rx_callback is a standard mailbox callback mechanism and could cover the
function of proprietary cmdq_task_cb, so use the standard one instead of
the proprietary one.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index a4e80e499674..369d3e68c0b6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -4,6 +4,8 @@
*/
#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/mailbox_controller.h>
#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
@@ -222,9 +224,11 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
-static void ddp_cmdq_cb(struct cmdq_cb_data data)
+static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
- cmdq_pkt_destroy(data.data);
+ struct cmdq_cb_data *data = mssg;
+
+ cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -475,7 +479,12 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
+ dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ cmdq_handle->pa_base,
+ cmdq_handle->cmd_buf_size,
+ DMA_TO_DEVICE);
+ mbox_send_message(mtk_crtc->cmdq_client->chan, cmdq_handle);
+ mbox_client_txdone(mtk_crtc->cmdq_client->chan, 0);
}
#endif
mtk_crtc->config_updating = false;
@@ -839,6 +848,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
}
if (mtk_crtc->cmdq_client) {
+ mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 1/6] drm/mediatek: Use mailbox rx_callback instead of cmdq_task_cb
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
rx_callback is a standard mailbox callback mechanism and could cover the
function of proprietary cmdq_task_cb, so use the standard one instead of
the proprietary one.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index a4e80e499674..369d3e68c0b6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -4,6 +4,8 @@
*/
#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/mailbox_controller.h>
#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
@@ -222,9 +224,11 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
-static void ddp_cmdq_cb(struct cmdq_cb_data data)
+static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
- cmdq_pkt_destroy(data.data);
+ struct cmdq_cb_data *data = mssg;
+
+ cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -475,7 +479,12 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
+ dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ cmdq_handle->pa_base,
+ cmdq_handle->cmd_buf_size,
+ DMA_TO_DEVICE);
+ mbox_send_message(mtk_crtc->cmdq_client->chan, cmdq_handle);
+ mbox_client_txdone(mtk_crtc->cmdq_client->chan, 0);
}
#endif
mtk_crtc->config_updating = false;
@@ -839,6 +848,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
}
if (mtk_crtc->cmdq_client) {
+ mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v5 2/6] drm/mediatek: Remove the pointer of struct cmdq_client
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 2:18 ` jason-jh.lin
-1 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
In mailbox rx_callback, it pass struct mbox_client to callback
function, but it could not map back to mtk_drm_crtc instance
because struct cmdq_client use a pointer to struct mbox_client:
struct cmdq_client {
struct mbox_client client;
struct mbox_chan *chan;
};
struct mtk_drm_crtc {
/* client instance data */
struct cmdq_client *cmdq_client;
};
so remove the pointer of struct cmdq_client and let mtk_drm_crtc
instance define cmdq_client as:
struct mtk_drm_crtc {
/* client instance data */
struct cmdq_client cmdq_client;
};
and in rx_callback function, use struct mbox_client to get
struct mtk_drm_crtc.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 37 +++++++++++++------------
1 file changed, 20 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 369d3e68c0b6..e23e3224ac67 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -52,7 +52,7 @@ struct mtk_drm_crtc {
bool pending_async_planes;
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_client *cmdq_client;
+ struct cmdq_client cmdq_client;
u32 cmdq_event;
#endif
@@ -472,19 +472,19 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
mtk_mutex_release(mtk_crtc->mutex);
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (mtk_crtc->cmdq_client) {
- mbox_flush(mtk_crtc->cmdq_client->chan, 2000);
- cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE);
+ if (mtk_crtc->cmdq_client.chan) {
+ mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
+ cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ dma_sync_single_for_device(mtk_crtc->cmdq_client.chan->mbox->dev,
cmdq_handle->pa_base,
cmdq_handle->cmd_buf_size,
DMA_TO_DEVICE);
- mbox_send_message(mtk_crtc->cmdq_client->chan, cmdq_handle);
- mbox_client_txdone(mtk_crtc->cmdq_client->chan, 0);
+ mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
+ mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
}
#endif
mtk_crtc->config_updating = false;
@@ -498,7 +498,7 @@ static void mtk_crtc_ddp_irq(void *data)
struct mtk_drm_private *priv = crtc->dev->dev_private;
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (!priv->data->shadow_register && !mtk_crtc->cmdq_client)
+ if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
#else
if (!priv->data->shadow_register)
#endif
@@ -838,17 +838,20 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
mutex_init(&mtk_crtc->hw_lock);
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- mtk_crtc->cmdq_client =
- cmdq_mbox_create(mtk_crtc->mmsys_dev,
- drm_crtc_index(&mtk_crtc->base));
- if (IS_ERR(mtk_crtc->cmdq_client)) {
+ mtk_crtc->cmdq_client.client.dev = mtk_crtc->mmsys_dev;
+ mtk_crtc->cmdq_client.client.tx_block = false;
+ mtk_crtc->cmdq_client.client.knows_txdone = true;
+ mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
+ mtk_crtc->cmdq_client.chan =
+ mbox_request_channel(&mtk_crtc->cmdq_client.client,
+ drm_crtc_index(&mtk_crtc->base));
+ if (IS_ERR(mtk_crtc->cmdq_client.chan)) {
dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
drm_crtc_index(&mtk_crtc->base));
- mtk_crtc->cmdq_client = NULL;
+ mtk_crtc->cmdq_client.chan = NULL;
}
- if (mtk_crtc->cmdq_client) {
- mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
+ if (mtk_crtc->cmdq_client.chan) {
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
@@ -856,8 +859,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
if (ret) {
dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
drm_crtc_index(&mtk_crtc->base));
- cmdq_mbox_destroy(mtk_crtc->cmdq_client);
- mtk_crtc->cmdq_client = NULL;
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
}
}
#endif
--
2.18.0
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 2/6] drm/mediatek: Remove the pointer of struct cmdq_client
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
In mailbox rx_callback, it pass struct mbox_client to callback
function, but it could not map back to mtk_drm_crtc instance
because struct cmdq_client use a pointer to struct mbox_client:
struct cmdq_client {
struct mbox_client client;
struct mbox_chan *chan;
};
struct mtk_drm_crtc {
/* client instance data */
struct cmdq_client *cmdq_client;
};
so remove the pointer of struct cmdq_client and let mtk_drm_crtc
instance define cmdq_client as:
struct mtk_drm_crtc {
/* client instance data */
struct cmdq_client cmdq_client;
};
and in rx_callback function, use struct mbox_client to get
struct mtk_drm_crtc.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 37 +++++++++++++------------
1 file changed, 20 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 369d3e68c0b6..e23e3224ac67 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -52,7 +52,7 @@ struct mtk_drm_crtc {
bool pending_async_planes;
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_client *cmdq_client;
+ struct cmdq_client cmdq_client;
u32 cmdq_event;
#endif
@@ -472,19 +472,19 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
mtk_mutex_release(mtk_crtc->mutex);
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (mtk_crtc->cmdq_client) {
- mbox_flush(mtk_crtc->cmdq_client->chan, 2000);
- cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE);
+ if (mtk_crtc->cmdq_client.chan) {
+ mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
+ cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ dma_sync_single_for_device(mtk_crtc->cmdq_client.chan->mbox->dev,
cmdq_handle->pa_base,
cmdq_handle->cmd_buf_size,
DMA_TO_DEVICE);
- mbox_send_message(mtk_crtc->cmdq_client->chan, cmdq_handle);
- mbox_client_txdone(mtk_crtc->cmdq_client->chan, 0);
+ mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
+ mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
}
#endif
mtk_crtc->config_updating = false;
@@ -498,7 +498,7 @@ static void mtk_crtc_ddp_irq(void *data)
struct mtk_drm_private *priv = crtc->dev->dev_private;
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (!priv->data->shadow_register && !mtk_crtc->cmdq_client)
+ if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
#else
if (!priv->data->shadow_register)
#endif
@@ -838,17 +838,20 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
mutex_init(&mtk_crtc->hw_lock);
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- mtk_crtc->cmdq_client =
- cmdq_mbox_create(mtk_crtc->mmsys_dev,
- drm_crtc_index(&mtk_crtc->base));
- if (IS_ERR(mtk_crtc->cmdq_client)) {
+ mtk_crtc->cmdq_client.client.dev = mtk_crtc->mmsys_dev;
+ mtk_crtc->cmdq_client.client.tx_block = false;
+ mtk_crtc->cmdq_client.client.knows_txdone = true;
+ mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
+ mtk_crtc->cmdq_client.chan =
+ mbox_request_channel(&mtk_crtc->cmdq_client.client,
+ drm_crtc_index(&mtk_crtc->base));
+ if (IS_ERR(mtk_crtc->cmdq_client.chan)) {
dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
drm_crtc_index(&mtk_crtc->base));
- mtk_crtc->cmdq_client = NULL;
+ mtk_crtc->cmdq_client.chan = NULL;
}
- if (mtk_crtc->cmdq_client) {
- mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
+ if (mtk_crtc->cmdq_client.chan) {
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
@@ -856,8 +859,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
if (ret) {
dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
drm_crtc_index(&mtk_crtc->base));
- cmdq_mbox_destroy(mtk_crtc->cmdq_client);
- mtk_crtc->cmdq_client = NULL;
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
}
}
#endif
--
2.18.0
_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 2/6] drm/mediatek: Remove the pointer of struct cmdq_client
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
In mailbox rx_callback, it pass struct mbox_client to callback
function, but it could not map back to mtk_drm_crtc instance
because struct cmdq_client use a pointer to struct mbox_client:
struct cmdq_client {
struct mbox_client client;
struct mbox_chan *chan;
};
struct mtk_drm_crtc {
/* client instance data */
struct cmdq_client *cmdq_client;
};
so remove the pointer of struct cmdq_client and let mtk_drm_crtc
instance define cmdq_client as:
struct mtk_drm_crtc {
/* client instance data */
struct cmdq_client cmdq_client;
};
and in rx_callback function, use struct mbox_client to get
struct mtk_drm_crtc.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 37 +++++++++++++------------
1 file changed, 20 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 369d3e68c0b6..e23e3224ac67 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -52,7 +52,7 @@ struct mtk_drm_crtc {
bool pending_async_planes;
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_client *cmdq_client;
+ struct cmdq_client cmdq_client;
u32 cmdq_event;
#endif
@@ -472,19 +472,19 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
mtk_mutex_release(mtk_crtc->mutex);
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (mtk_crtc->cmdq_client) {
- mbox_flush(mtk_crtc->cmdq_client->chan, 2000);
- cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE);
+ if (mtk_crtc->cmdq_client.chan) {
+ mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
+ cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ dma_sync_single_for_device(mtk_crtc->cmdq_client.chan->mbox->dev,
cmdq_handle->pa_base,
cmdq_handle->cmd_buf_size,
DMA_TO_DEVICE);
- mbox_send_message(mtk_crtc->cmdq_client->chan, cmdq_handle);
- mbox_client_txdone(mtk_crtc->cmdq_client->chan, 0);
+ mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
+ mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
}
#endif
mtk_crtc->config_updating = false;
@@ -498,7 +498,7 @@ static void mtk_crtc_ddp_irq(void *data)
struct mtk_drm_private *priv = crtc->dev->dev_private;
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (!priv->data->shadow_register && !mtk_crtc->cmdq_client)
+ if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
#else
if (!priv->data->shadow_register)
#endif
@@ -838,17 +838,20 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
mutex_init(&mtk_crtc->hw_lock);
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- mtk_crtc->cmdq_client =
- cmdq_mbox_create(mtk_crtc->mmsys_dev,
- drm_crtc_index(&mtk_crtc->base));
- if (IS_ERR(mtk_crtc->cmdq_client)) {
+ mtk_crtc->cmdq_client.client.dev = mtk_crtc->mmsys_dev;
+ mtk_crtc->cmdq_client.client.tx_block = false;
+ mtk_crtc->cmdq_client.client.knows_txdone = true;
+ mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
+ mtk_crtc->cmdq_client.chan =
+ mbox_request_channel(&mtk_crtc->cmdq_client.client,
+ drm_crtc_index(&mtk_crtc->base));
+ if (IS_ERR(mtk_crtc->cmdq_client.chan)) {
dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
drm_crtc_index(&mtk_crtc->base));
- mtk_crtc->cmdq_client = NULL;
+ mtk_crtc->cmdq_client.chan = NULL;
}
- if (mtk_crtc->cmdq_client) {
- mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
+ if (mtk_crtc->cmdq_client.chan) {
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
@@ -856,8 +859,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
if (ret) {
dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
drm_crtc_index(&mtk_crtc->base));
- cmdq_mbox_destroy(mtk_crtc->cmdq_client);
- mtk_crtc->cmdq_client = NULL;
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
}
}
#endif
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 2:18 ` jason-jh.lin
-1 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
CMDQ is used to update display register in vblank period, so
it should be execute in next 2 vblank. One vblank interrupt
before send message (occasionally) and one vblank interrupt
after cmdq done. If it fail to execute in next 3 vblank,
tiemout happen.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index e23e3224ac67..dad1f85ee315 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -54,6 +54,7 @@ struct mtk_drm_crtc {
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct cmdq_client cmdq_client;
u32 cmdq_event;
+ u32 cmdq_vblank_cnt;
#endif
struct device *mmsys_dev;
@@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
struct cmdq_cb_data *data = mssg;
+ struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
+ struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
+ mtk_crtc->cmdq_vblank_cnt = 0;
cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
+ * One vblank interrupt before send message (occasionally)
+ * and one vblank interrupt after cmdq done,
+ * so it's timeout after 3 vblank interrupt.
+ * If it fail to execute in next 3 vblank, timeout happen.
+ */
+ mtk_crtc->cmdq_vblank_cnt = 3;
+
mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
}
@@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
+ mtk_crtc_ddp_config(crtc, NULL);
+ else if (mtk_crtc->cmdq_vblank_cnt > 0 && --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);
}
--
2.18.0
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
CMDQ is used to update display register in vblank period, so
it should be execute in next 2 vblank. One vblank interrupt
before send message (occasionally) and one vblank interrupt
after cmdq done. If it fail to execute in next 3 vblank,
tiemout happen.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index e23e3224ac67..dad1f85ee315 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -54,6 +54,7 @@ struct mtk_drm_crtc {
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct cmdq_client cmdq_client;
u32 cmdq_event;
+ u32 cmdq_vblank_cnt;
#endif
struct device *mmsys_dev;
@@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
struct cmdq_cb_data *data = mssg;
+ struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
+ struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
+ mtk_crtc->cmdq_vblank_cnt = 0;
cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
+ * One vblank interrupt before send message (occasionally)
+ * and one vblank interrupt after cmdq done,
+ * so it's timeout after 3 vblank interrupt.
+ * If it fail to execute in next 3 vblank, timeout happen.
+ */
+ mtk_crtc->cmdq_vblank_cnt = 3;
+
mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
}
@@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
+ mtk_crtc_ddp_config(crtc, NULL);
+ else if (mtk_crtc->cmdq_vblank_cnt > 0 && --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);
}
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
CMDQ is used to update display register in vblank period, so
it should be execute in next 2 vblank. One vblank interrupt
before send message (occasionally) and one vblank interrupt
after cmdq done. If it fail to execute in next 3 vblank,
tiemout happen.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index e23e3224ac67..dad1f85ee315 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -54,6 +54,7 @@ struct mtk_drm_crtc {
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct cmdq_client cmdq_client;
u32 cmdq_event;
+ u32 cmdq_vblank_cnt;
#endif
struct device *mmsys_dev;
@@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
struct cmdq_cb_data *data = mssg;
+ struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
+ struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
+ mtk_crtc->cmdq_vblank_cnt = 0;
cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
+ * One vblank interrupt before send message (occasionally)
+ * and one vblank interrupt after cmdq done,
+ * so it's timeout after 3 vblank interrupt.
+ * If it fail to execute in next 3 vblank, timeout happen.
+ */
+ mtk_crtc->cmdq_vblank_cnt = 3;
+
mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
}
@@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
+ mtk_crtc_ddp_config(crtc, NULL);
+ else if (mtk_crtc->cmdq_vblank_cnt > 0 && --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);
}
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply related [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 9:31 ` Fei Shao
-1 siblings, 0 replies; 40+ messages in thread
From: Fei Shao @ 2021-10-27 9:31 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi,
nancy.lin, singo.chang
Hi Jason,
On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
>
> From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> CMDQ is used to update display register in vblank period, so
> it should be execute in next 2 vblank. One vblank interrupt
> before send message (occasionally) and one vblank interrupt
> after cmdq done. If it fail to execute in next 3 vblank,
> tiemout happen.
>
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> 1 file changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index e23e3224ac67..dad1f85ee315 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> struct cmdq_client cmdq_client;
> u32 cmdq_event;
> + u32 cmdq_vblank_cnt;
> #endif
>
> struct device *mmsys_dev;
> @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> {
> struct cmdq_cb_data *data = mssg;
> + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
>
> + mtk_crtc->cmdq_vblank_cnt = 0;
> cmdq_pkt_destroy(data->pkt);
> }
> #endif
> @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> + * One vblank interrupt before send message (occasionally)
> + * and one vblank interrupt after cmdq done,
> + * so it's timeout after 3 vblank interrupt.
> + * If it fail to execute in next 3 vblank, timeout happen.
> + */
> + mtk_crtc->cmdq_vblank_cnt = 3;
> +
> mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> }
> @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> + mtk_crtc_ddp_config(crtc, NULL);
> + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
I think atomic_dec_and_test() does what you want to do here.
> + 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);
> }
>
> --
> 2.18.0
>
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-27 9:31 ` Fei Shao
0 siblings, 0 replies; 40+ messages in thread
From: Fei Shao @ 2021-10-27 9:31 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi,
nancy.lin, singo.chang
Hi Jason,
On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
>
> From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> CMDQ is used to update display register in vblank period, so
> it should be execute in next 2 vblank. One vblank interrupt
> before send message (occasionally) and one vblank interrupt
> after cmdq done. If it fail to execute in next 3 vblank,
> tiemout happen.
>
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> 1 file changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index e23e3224ac67..dad1f85ee315 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> struct cmdq_client cmdq_client;
> u32 cmdq_event;
> + u32 cmdq_vblank_cnt;
> #endif
>
> struct device *mmsys_dev;
> @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> {
> struct cmdq_cb_data *data = mssg;
> + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
>
> + mtk_crtc->cmdq_vblank_cnt = 0;
> cmdq_pkt_destroy(data->pkt);
> }
> #endif
> @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> + * One vblank interrupt before send message (occasionally)
> + * and one vblank interrupt after cmdq done,
> + * so it's timeout after 3 vblank interrupt.
> + * If it fail to execute in next 3 vblank, timeout happen.
> + */
> + mtk_crtc->cmdq_vblank_cnt = 3;
> +
> mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> }
> @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> + mtk_crtc_ddp_config(crtc, NULL);
> + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
I think atomic_dec_and_test() does what you want to do here.
> + 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);
> }
>
> --
> 2.18.0
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-27 9:31 ` Fei Shao
0 siblings, 0 replies; 40+ messages in thread
From: Fei Shao @ 2021-10-27 9:31 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi,
nancy.lin, singo.chang
Hi Jason,
On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
>
> From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> CMDQ is used to update display register in vblank period, so
> it should be execute in next 2 vblank. One vblank interrupt
> before send message (occasionally) and one vblank interrupt
> after cmdq done. If it fail to execute in next 3 vblank,
> tiemout happen.
>
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> 1 file changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index e23e3224ac67..dad1f85ee315 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> struct cmdq_client cmdq_client;
> u32 cmdq_event;
> + u32 cmdq_vblank_cnt;
> #endif
>
> struct device *mmsys_dev;
> @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> {
> struct cmdq_cb_data *data = mssg;
> + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
>
> + mtk_crtc->cmdq_vblank_cnt = 0;
> cmdq_pkt_destroy(data->pkt);
> }
> #endif
> @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> + * One vblank interrupt before send message (occasionally)
> + * and one vblank interrupt after cmdq done,
> + * so it's timeout after 3 vblank interrupt.
> + * If it fail to execute in next 3 vblank, timeout happen.
> + */
> + mtk_crtc->cmdq_vblank_cnt = 3;
> +
> mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> }
> @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> + mtk_crtc_ddp_config(crtc, NULL);
> + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
I think atomic_dec_and_test() does what you want to do here.
> + 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);
> }
>
> --
> 2.18.0
>
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
2021-10-27 9:31 ` Fei Shao
(?)
@ 2021-10-27 23:47 ` Chun-Kuang Hu
-1 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:47 UTC (permalink / raw)
To: Fei Shao
Cc: jason-jh.lin, Chun-Kuang Hu, Philipp Zabel, Matthias Brugger,
Jassi Brar, Yongqiang Niu, David Airlie, Daniel Vetter,
DRI Development, moderated list:ARM/Mediatek SoC support,
Linux ARM, linux-kernel, Hsin-Yi Wang, Nancy Lin, singo.chang
Hi, Fei:
Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
>
> Hi Jason,
>
> On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> >
> > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> >
> > CMDQ is used to update display register in vblank period, so
> > it should be execute in next 2 vblank. One vblank interrupt
> > before send message (occasionally) and one vblank interrupt
> > after cmdq done. If it fail to execute in next 3 vblank,
> > tiemout happen.
> >
> > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > ---
> > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > 1 file changed, 18 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > index e23e3224ac67..dad1f85ee315 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > struct cmdq_client cmdq_client;
> > u32 cmdq_event;
> > + u32 cmdq_vblank_cnt;
> > #endif
> >
> > struct device *mmsys_dev;
> > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > {
> > struct cmdq_cb_data *data = mssg;
> > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> >
> > + mtk_crtc->cmdq_vblank_cnt = 0;
> > cmdq_pkt_destroy(data->pkt);
> > }
> > #endif
> > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > + * One vblank interrupt before send message (occasionally)
> > + * and one vblank interrupt after cmdq done,
> > + * so it's timeout after 3 vblank interrupt.
> > + * If it fail to execute in next 3 vblank, timeout happen.
> > + */
> > + mtk_crtc->cmdq_vblank_cnt = 3;
> > +
> > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > }
> > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> >
> > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > + mtk_crtc_ddp_config(crtc, NULL);
> > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> I think atomic_dec_and_test() does what you want to do here.
I think this operation is not necessary to be atomic operation, and
this statement could be reduced to
else if (--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);
> > }
> >
> > --
> > 2.18.0
> >
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-27 23:47 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:47 UTC (permalink / raw)
To: Fei Shao
Cc: jason-jh.lin, Chun-Kuang Hu, Philipp Zabel, Matthias Brugger,
Jassi Brar, Yongqiang Niu, David Airlie, Daniel Vetter,
DRI Development, moderated list:ARM/Mediatek SoC support,
Linux ARM, linux-kernel, Hsin-Yi Wang, Nancy Lin, singo.chang
Hi, Fei:
Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
>
> Hi Jason,
>
> On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> >
> > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> >
> > CMDQ is used to update display register in vblank period, so
> > it should be execute in next 2 vblank. One vblank interrupt
> > before send message (occasionally) and one vblank interrupt
> > after cmdq done. If it fail to execute in next 3 vblank,
> > tiemout happen.
> >
> > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > ---
> > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > 1 file changed, 18 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > index e23e3224ac67..dad1f85ee315 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > struct cmdq_client cmdq_client;
> > u32 cmdq_event;
> > + u32 cmdq_vblank_cnt;
> > #endif
> >
> > struct device *mmsys_dev;
> > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > {
> > struct cmdq_cb_data *data = mssg;
> > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> >
> > + mtk_crtc->cmdq_vblank_cnt = 0;
> > cmdq_pkt_destroy(data->pkt);
> > }
> > #endif
> > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > + * One vblank interrupt before send message (occasionally)
> > + * and one vblank interrupt after cmdq done,
> > + * so it's timeout after 3 vblank interrupt.
> > + * If it fail to execute in next 3 vblank, timeout happen.
> > + */
> > + mtk_crtc->cmdq_vblank_cnt = 3;
> > +
> > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > }
> > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> >
> > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > + mtk_crtc_ddp_config(crtc, NULL);
> > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> I think atomic_dec_and_test() does what you want to do here.
I think this operation is not necessary to be atomic operation, and
this statement could be reduced to
else if (--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);
> > }
> >
> > --
> > 2.18.0
> >
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-27 23:47 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:47 UTC (permalink / raw)
To: Fei Shao
Cc: jason-jh.lin, Chun-Kuang Hu, Philipp Zabel, Matthias Brugger,
Jassi Brar, Yongqiang Niu, David Airlie, Daniel Vetter,
DRI Development, moderated list:ARM/Mediatek SoC support,
Linux ARM, linux-kernel, Hsin-Yi Wang, Nancy Lin, singo.chang
Hi, Fei:
Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
>
> Hi Jason,
>
> On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> >
> > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> >
> > CMDQ is used to update display register in vblank period, so
> > it should be execute in next 2 vblank. One vblank interrupt
> > before send message (occasionally) and one vblank interrupt
> > after cmdq done. If it fail to execute in next 3 vblank,
> > tiemout happen.
> >
> > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > ---
> > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > 1 file changed, 18 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > index e23e3224ac67..dad1f85ee315 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > struct cmdq_client cmdq_client;
> > u32 cmdq_event;
> > + u32 cmdq_vblank_cnt;
> > #endif
> >
> > struct device *mmsys_dev;
> > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > {
> > struct cmdq_cb_data *data = mssg;
> > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> >
> > + mtk_crtc->cmdq_vblank_cnt = 0;
> > cmdq_pkt_destroy(data->pkt);
> > }
> > #endif
> > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > + * One vblank interrupt before send message (occasionally)
> > + * and one vblank interrupt after cmdq done,
> > + * so it's timeout after 3 vblank interrupt.
> > + * If it fail to execute in next 3 vblank, timeout happen.
> > + */
> > + mtk_crtc->cmdq_vblank_cnt = 3;
> > +
> > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > }
> > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> >
> > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > + mtk_crtc_ddp_config(crtc, NULL);
> > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> I think atomic_dec_and_test() does what you want to do here.
I think this operation is not necessary to be atomic operation, and
this statement could be reduced to
else if (--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);
> > }
> >
> > --
> > 2.18.0
> >
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
2021-10-27 23:47 ` Chun-Kuang Hu
(?)
@ 2021-10-28 3:19 ` Fei Shao
-1 siblings, 0 replies; 40+ messages in thread
From: Fei Shao @ 2021-10-28 3:19 UTC (permalink / raw)
To: Chun-Kuang Hu
Cc: jason-jh.lin, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, Nancy Lin, singo.chang
Hi Chun-Kuang,
On Thu, Oct 28, 2021 at 7:47 AM Chun-Kuang Hu <chunkuang.hu@kernel.org> wrote:
>
> Hi, Fei:
>
> Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
> >
> > Hi Jason,
> >
> > On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> > >
> > > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > >
> > > CMDQ is used to update display register in vblank period, so
> > > it should be execute in next 2 vblank. One vblank interrupt
> > > before send message (occasionally) and one vblank interrupt
> > > after cmdq done. If it fail to execute in next 3 vblank,
> > > tiemout happen.
> > >
> > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > ---
> > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > > 1 file changed, 18 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > index e23e3224ac67..dad1f85ee315 100644
> > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > struct cmdq_client cmdq_client;
> > > u32 cmdq_event;
> > > + u32 cmdq_vblank_cnt;
> > > #endif
> > >
> > > struct device *mmsys_dev;
> > > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > > {
> > > struct cmdq_cb_data *data = mssg;
> > > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> > >
> > > + mtk_crtc->cmdq_vblank_cnt = 0;
> > > cmdq_pkt_destroy(data->pkt);
> > > }
> > > #endif
> > > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > > + * One vblank interrupt before send message (occasionally)
> > > + * and one vblank interrupt after cmdq done,
> > > + * so it's timeout after 3 vblank interrupt.
> > > + * If it fail to execute in next 3 vblank, timeout happen.
> > > + */
> > > + mtk_crtc->cmdq_vblank_cnt = 3;
> > > +
> > > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > > }
> > > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> > >
> > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > > + mtk_crtc_ddp_config(crtc, NULL);
> > > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> > I think atomic_dec_and_test() does what you want to do here.
>
> I think this operation is not necessary to be atomic operation, and
> this statement could be reduced to
>
> else if (--mtk_crtc->cmdq_vblank_cnt == 0)
I was thinking about using existing helpers to wrap up the counter
operations, but I agree that it's not necessary.
Just dropping the redundant check would be good enough.
>
> >
> > > + 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);
> > > }
> > >
> > > --
> > > 2.18.0
> > >
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-28 3:19 ` Fei Shao
0 siblings, 0 replies; 40+ messages in thread
From: Fei Shao @ 2021-10-28 3:19 UTC (permalink / raw)
To: Chun-Kuang Hu
Cc: jason-jh.lin, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, Nancy Lin, singo.chang
Hi Chun-Kuang,
On Thu, Oct 28, 2021 at 7:47 AM Chun-Kuang Hu <chunkuang.hu@kernel.org> wrote:
>
> Hi, Fei:
>
> Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
> >
> > Hi Jason,
> >
> > On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> > >
> > > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > >
> > > CMDQ is used to update display register in vblank period, so
> > > it should be execute in next 2 vblank. One vblank interrupt
> > > before send message (occasionally) and one vblank interrupt
> > > after cmdq done. If it fail to execute in next 3 vblank,
> > > tiemout happen.
> > >
> > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > ---
> > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > > 1 file changed, 18 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > index e23e3224ac67..dad1f85ee315 100644
> > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > struct cmdq_client cmdq_client;
> > > u32 cmdq_event;
> > > + u32 cmdq_vblank_cnt;
> > > #endif
> > >
> > > struct device *mmsys_dev;
> > > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > > {
> > > struct cmdq_cb_data *data = mssg;
> > > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> > >
> > > + mtk_crtc->cmdq_vblank_cnt = 0;
> > > cmdq_pkt_destroy(data->pkt);
> > > }
> > > #endif
> > > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > > + * One vblank interrupt before send message (occasionally)
> > > + * and one vblank interrupt after cmdq done,
> > > + * so it's timeout after 3 vblank interrupt.
> > > + * If it fail to execute in next 3 vblank, timeout happen.
> > > + */
> > > + mtk_crtc->cmdq_vblank_cnt = 3;
> > > +
> > > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > > }
> > > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> > >
> > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > > + mtk_crtc_ddp_config(crtc, NULL);
> > > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> > I think atomic_dec_and_test() does what you want to do here.
>
> I think this operation is not necessary to be atomic operation, and
> this statement could be reduced to
>
> else if (--mtk_crtc->cmdq_vblank_cnt == 0)
I was thinking about using existing helpers to wrap up the counter
operations, but I agree that it's not necessary.
Just dropping the redundant check would be good enough.
>
> >
> > > + 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);
> > > }
> > >
> > > --
> > > 2.18.0
> > >
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-10-28 3:19 ` Fei Shao
0 siblings, 0 replies; 40+ messages in thread
From: Fei Shao @ 2021-10-28 3:19 UTC (permalink / raw)
To: Chun-Kuang Hu
Cc: jason-jh.lin, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, Nancy Lin, singo.chang
Hi Chun-Kuang,
On Thu, Oct 28, 2021 at 7:47 AM Chun-Kuang Hu <chunkuang.hu@kernel.org> wrote:
>
> Hi, Fei:
>
> Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
> >
> > Hi Jason,
> >
> > On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> > >
> > > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > >
> > > CMDQ is used to update display register in vblank period, so
> > > it should be execute in next 2 vblank. One vblank interrupt
> > > before send message (occasionally) and one vblank interrupt
> > > after cmdq done. If it fail to execute in next 3 vblank,
> > > tiemout happen.
> > >
> > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > ---
> > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > > 1 file changed, 18 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > index e23e3224ac67..dad1f85ee315 100644
> > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > struct cmdq_client cmdq_client;
> > > u32 cmdq_event;
> > > + u32 cmdq_vblank_cnt;
> > > #endif
> > >
> > > struct device *mmsys_dev;
> > > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > > {
> > > struct cmdq_cb_data *data = mssg;
> > > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> > >
> > > + mtk_crtc->cmdq_vblank_cnt = 0;
> > > cmdq_pkt_destroy(data->pkt);
> > > }
> > > #endif
> > > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > > + * One vblank interrupt before send message (occasionally)
> > > + * and one vblank interrupt after cmdq done,
> > > + * so it's timeout after 3 vblank interrupt.
> > > + * If it fail to execute in next 3 vblank, timeout happen.
> > > + */
> > > + mtk_crtc->cmdq_vblank_cnt = 3;
> > > +
> > > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > > }
> > > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> > >
> > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > > + mtk_crtc_ddp_config(crtc, NULL);
> > > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> > I think atomic_dec_and_test() does what you want to do here.
>
> I think this operation is not necessary to be atomic operation, and
> this statement could be reduced to
>
> else if (--mtk_crtc->cmdq_vblank_cnt == 0)
I was thinking about using existing helpers to wrap up the counter
operations, but I agree that it's not necessary.
Just dropping the redundant check would be good enough.
>
> >
> > > + 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);
> > > }
> > >
> > > --
> > > 2.18.0
> > >
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
2021-10-28 3:19 ` Fei Shao
(?)
(?)
@ 2021-11-17 23:51 ` Chun-Kuang Hu
-1 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-11-17 23:51 UTC (permalink / raw)
To: Fei Shao
Cc: Chun-Kuang Hu, jason-jh.lin, Philipp Zabel, Matthias Brugger,
Jassi Brar, Yongqiang Niu, David Airlie, Daniel Vetter,
DRI Development, moderated list:ARM/Mediatek SoC support,
Linux ARM, linux-kernel, Hsin-Yi Wang, Nancy Lin, singo.chang
Hi, Fei:
Fei Shao <fshao@chromium.org> 於 2021年10月28日 週四 上午11:19寫道：
>
> Hi Chun-Kuang,
>
> On Thu, Oct 28, 2021 at 7:47 AM Chun-Kuang Hu <chunkuang.hu@kernel.org> wrote:
> >
> > Hi, Fei:
> >
> > Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
> > >
> > > Hi Jason,
> > >
> > > On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> > > >
> > > > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > >
> > > > CMDQ is used to update display register in vblank period, so
> > > > it should be execute in next 2 vblank. One vblank interrupt
> > > > before send message (occasionally) and one vblank interrupt
> > > > after cmdq done. If it fail to execute in next 3 vblank,
> > > > tiemout happen.
> > > >
> > > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > ---
> > > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > > > 1 file changed, 18 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > index e23e3224ac67..dad1f85ee315 100644
> > > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > struct cmdq_client cmdq_client;
> > > > u32 cmdq_event;
> > > > + u32 cmdq_vblank_cnt;
> > > > #endif
> > > >
> > > > struct device *mmsys_dev;
> > > > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > > > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > > > {
> > > > struct cmdq_cb_data *data = mssg;
> > > > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > > > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> > > >
> > > > + mtk_crtc->cmdq_vblank_cnt = 0;
> > > > cmdq_pkt_destroy(data->pkt);
> > > > }
> > > > #endif
> > > > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > > > + * One vblank interrupt before send message (occasionally)
> > > > + * and one vblank interrupt after cmdq done,
> > > > + * so it's timeout after 3 vblank interrupt.
> > > > + * If it fail to execute in next 3 vblank, timeout happen.
> > > > + */
> > > > + mtk_crtc->cmdq_vblank_cnt = 3;
> > > > +
> > > > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > > > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > > > }
> > > > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> > > >
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > > > + mtk_crtc_ddp_config(crtc, NULL);
> > > > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> > > I think atomic_dec_and_test() does what you want to do here.
> >
> > I think this operation is not necessary to be atomic operation, and
> > this statement could be reduced to
> >
> > else if (--mtk_crtc->cmdq_vblank_cnt == 0)
>
> I was thinking about using existing helpers to wrap up the counter
> operations, but I agree that it's not necessary.
> Just dropping the redundant check would be good enough.
I find one thing so that I would like this version. If we do not check
mtk_crtc->cmdq_vblank_cnt > 0, mtk_crtc->cmdq_vblank_cnt would
decrease to minus. And one day it would round to positive. So I would
pick this version instead of v6.
Regards,
Chun-Kuang.
>
>
> >
> > >
> > > > + 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);
> > > > }
> > > >
> > > > --
> > > > 2.18.0
> > > >
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-11-17 23:51 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-11-17 23:51 UTC (permalink / raw)
To: Fei Shao
Cc: Chun-Kuang Hu, jason-jh.lin, Philipp Zabel, Matthias Brugger,
Jassi Brar, Yongqiang Niu, David Airlie, Daniel Vetter,
DRI Development, moderated list:ARM/Mediatek SoC support,
Linux ARM, linux-kernel, Hsin-Yi Wang, Nancy Lin, singo.chang
Hi, Fei:
Fei Shao <fshao@chromium.org> 於 2021年10月28日 週四 上午11:19寫道：
>
> Hi Chun-Kuang,
>
> On Thu, Oct 28, 2021 at 7:47 AM Chun-Kuang Hu <chunkuang.hu@kernel.org> wrote:
> >
> > Hi, Fei:
> >
> > Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
> > >
> > > Hi Jason,
> > >
> > > On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> > > >
> > > > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > >
> > > > CMDQ is used to update display register in vblank period, so
> > > > it should be execute in next 2 vblank. One vblank interrupt
> > > > before send message (occasionally) and one vblank interrupt
> > > > after cmdq done. If it fail to execute in next 3 vblank,
> > > > tiemout happen.
> > > >
> > > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > ---
> > > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > > > 1 file changed, 18 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > index e23e3224ac67..dad1f85ee315 100644
> > > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > struct cmdq_client cmdq_client;
> > > > u32 cmdq_event;
> > > > + u32 cmdq_vblank_cnt;
> > > > #endif
> > > >
> > > > struct device *mmsys_dev;
> > > > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > > > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > > > {
> > > > struct cmdq_cb_data *data = mssg;
> > > > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > > > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> > > >
> > > > + mtk_crtc->cmdq_vblank_cnt = 0;
> > > > cmdq_pkt_destroy(data->pkt);
> > > > }
> > > > #endif
> > > > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > > > + * One vblank interrupt before send message (occasionally)
> > > > + * and one vblank interrupt after cmdq done,
> > > > + * so it's timeout after 3 vblank interrupt.
> > > > + * If it fail to execute in next 3 vblank, timeout happen.
> > > > + */
> > > > + mtk_crtc->cmdq_vblank_cnt = 3;
> > > > +
> > > > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > > > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > > > }
> > > > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> > > >
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > > > + mtk_crtc_ddp_config(crtc, NULL);
> > > > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> > > I think atomic_dec_and_test() does what you want to do here.
> >
> > I think this operation is not necessary to be atomic operation, and
> > this statement could be reduced to
> >
> > else if (--mtk_crtc->cmdq_vblank_cnt == 0)
>
> I was thinking about using existing helpers to wrap up the counter
> operations, but I agree that it's not necessary.
> Just dropping the redundant check would be good enough.
I find one thing so that I would like this version. If we do not check
mtk_crtc->cmdq_vblank_cnt > 0, mtk_crtc->cmdq_vblank_cnt would
decrease to minus. And one day it would round to positive. So I would
pick this version instead of v6.
Regards,
Chun-Kuang.
>
>
> >
> > >
> > > > + 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);
> > > > }
> > > >
> > > > --
> > > > 2.18.0
> > > >
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-11-17 23:51 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-11-17 23:51 UTC (permalink / raw)
To: Fei Shao
Cc: Chun-Kuang Hu, David Airlie, jason-jh.lin, singo.chang,
Jassi Brar, linux-kernel, DRI Development, Nancy Lin,
moderated list:ARM/Mediatek SoC support, Yongqiang Niu,
Hsin-Yi Wang, Matthias Brugger, Linux ARM
Hi, Fei:
Fei Shao <fshao@chromium.org> 於 2021年10月28日 週四 上午11:19寫道：
>
> Hi Chun-Kuang,
>
> On Thu, Oct 28, 2021 at 7:47 AM Chun-Kuang Hu <chunkuang.hu@kernel.org> wrote:
> >
> > Hi, Fei:
> >
> > Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
> > >
> > > Hi Jason,
> > >
> > > On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> > > >
> > > > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > >
> > > > CMDQ is used to update display register in vblank period, so
> > > > it should be execute in next 2 vblank. One vblank interrupt
> > > > before send message (occasionally) and one vblank interrupt
> > > > after cmdq done. If it fail to execute in next 3 vblank,
> > > > tiemout happen.
> > > >
> > > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > ---
> > > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > > > 1 file changed, 18 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > index e23e3224ac67..dad1f85ee315 100644
> > > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > struct cmdq_client cmdq_client;
> > > > u32 cmdq_event;
> > > > + u32 cmdq_vblank_cnt;
> > > > #endif
> > > >
> > > > struct device *mmsys_dev;
> > > > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > > > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > > > {
> > > > struct cmdq_cb_data *data = mssg;
> > > > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > > > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> > > >
> > > > + mtk_crtc->cmdq_vblank_cnt = 0;
> > > > cmdq_pkt_destroy(data->pkt);
> > > > }
> > > > #endif
> > > > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > > > + * One vblank interrupt before send message (occasionally)
> > > > + * and one vblank interrupt after cmdq done,
> > > > + * so it's timeout after 3 vblank interrupt.
> > > > + * If it fail to execute in next 3 vblank, timeout happen.
> > > > + */
> > > > + mtk_crtc->cmdq_vblank_cnt = 3;
> > > > +
> > > > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > > > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > > > }
> > > > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> > > >
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > > > + mtk_crtc_ddp_config(crtc, NULL);
> > > > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> > > I think atomic_dec_and_test() does what you want to do here.
> >
> > I think this operation is not necessary to be atomic operation, and
> > this statement could be reduced to
> >
> > else if (--mtk_crtc->cmdq_vblank_cnt == 0)
>
> I was thinking about using existing helpers to wrap up the counter
> operations, but I agree that it's not necessary.
> Just dropping the redundant check would be good enough.
I find one thing so that I would like this version. If we do not check
mtk_crtc->cmdq_vblank_cnt > 0, mtk_crtc->cmdq_vblank_cnt would
decrease to minus. And one day it would round to positive. So I would
pick this version instead of v6.
Regards,
Chun-Kuang.
>
>
> >
> > >
> > > > + 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);
> > > > }
> > > >
> > > > --
> > > > 2.18.0
> > > >
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 3/6] drm/mediatek: Detect CMDQ execution timeout
@ 2021-11-17 23:51 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-11-17 23:51 UTC (permalink / raw)
To: Fei Shao
Cc: Chun-Kuang Hu, jason-jh.lin, Philipp Zabel, Matthias Brugger,
Jassi Brar, Yongqiang Niu, David Airlie, Daniel Vetter,
DRI Development, moderated list:ARM/Mediatek SoC support,
Linux ARM, linux-kernel, Hsin-Yi Wang, Nancy Lin, singo.chang
Hi, Fei:
Fei Shao <fshao@chromium.org> 於 2021年10月28日 週四 上午11:19寫道：
>
> Hi Chun-Kuang,
>
> On Thu, Oct 28, 2021 at 7:47 AM Chun-Kuang Hu <chunkuang.hu@kernel.org> wrote:
> >
> > Hi, Fei:
> >
> > Fei Shao <fshao@chromium.org> 於 2021年10月27日 週三 下午5:32寫道：
> > >
> > > Hi Jason,
> > >
> > > On Wed, Oct 27, 2021 at 10:19 AM jason-jh.lin <jason-jh.lin@mediatek.com> wrote:
> > > >
> > > > From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > >
> > > > CMDQ is used to update display register in vblank period, so
> > > > it should be execute in next 2 vblank. One vblank interrupt
> > > > before send message (occasionally) and one vblank interrupt
> > > > after cmdq done. If it fail to execute in next 3 vblank,
> > > > tiemout happen.
> > > >
> > > > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> > > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > > > ---
> > > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 20 ++++++++++++++++++--
> > > > 1 file changed, 18 insertions(+), 2 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > index e23e3224ac67..dad1f85ee315 100644
> > > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > > > @@ -54,6 +54,7 @@ struct mtk_drm_crtc {
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > struct cmdq_client cmdq_client;
> > > > u32 cmdq_event;
> > > > + u32 cmdq_vblank_cnt;
> > > > #endif
> > > >
> > > > struct device *mmsys_dev;
> > > > @@ -227,7 +228,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> > > > static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> > > > {
> > > > struct cmdq_cb_data *data = mssg;
> > > > + struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> > > > + struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
> > > >
> > > > + mtk_crtc->cmdq_vblank_cnt = 0;
> > > > cmdq_pkt_destroy(data->pkt);
> > > > }
> > > > #endif
> > > > @@ -483,6 +487,15 @@ static void mtk_drm_crtc_update_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 3 vblank.
> > > > + * One vblank interrupt before send message (occasionally)
> > > > + * and one vblank interrupt after cmdq done,
> > > > + * so it's timeout after 3 vblank interrupt.
> > > > + * If it fail to execute in next 3 vblank, timeout happen.
> > > > + */
> > > > + mtk_crtc->cmdq_vblank_cnt = 3;
> > > > +
> > > > mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
> > > > mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
> > > > }
> > > > @@ -499,11 +512,14 @@ static void mtk_crtc_ddp_irq(void *data)
> > > >
> > > > #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> > > > if (!priv->data->shadow_register && !mtk_crtc->cmdq_client.chan)
> > > > + mtk_crtc_ddp_config(crtc, NULL);
> > > > + else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
> > > I think atomic_dec_and_test() does what you want to do here.
> >
> > I think this operation is not necessary to be atomic operation, and
> > this statement could be reduced to
> >
> > else if (--mtk_crtc->cmdq_vblank_cnt == 0)
>
> I was thinking about using existing helpers to wrap up the counter
> operations, but I agree that it's not necessary.
> Just dropping the redundant check would be good enough.
I find one thing so that I would like this version. If we do not check
mtk_crtc->cmdq_vblank_cnt > 0, mtk_crtc->cmdq_vblank_cnt would
decrease to minus. And one day it would round to positive. So I would
pick this version instead of v6.
Regards,
Chun-Kuang.
>
>
> >
> > >
> > > > + 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);
> > > > }
> > > >
> > > > --
> > > > 2.18.0
> > > >
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 40+ messages in thread
* [PATCH v5 4/6] drm/mediatek: Add cmdq_handle in mtk_crtc
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 2:18 ` jason-jh.lin
-1 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
One mtk_crtc need just one cmdq_handle, so add one cmdq_handle
in mtk_crtc to prevent frequently allocation and free of
cmdq_handle.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 62 +++++++++++++++++++++++--
1 file changed, 57 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index dad1f85ee315..ffa54b416ca7 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -53,6 +53,7 @@ struct mtk_drm_crtc {
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct cmdq_client cmdq_client;
+ struct cmdq_pkt cmdq_handle;
u32 cmdq_event;
u32 cmdq_vblank_cnt;
#endif
@@ -107,12 +108,55 @@ static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
}
}
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
+ size_t size)
+{
+ struct device *dev;
+ dma_addr_t dma_addr;
+
+ pkt->va_base = kzalloc(size, GFP_KERNEL);
+ if (!pkt->va_base) {
+ kfree(pkt);
+ return -ENOMEM;
+ }
+ pkt->buf_size = size;
+ pkt->cl = (void *)client;
+
+ dev = client->chan->mbox->dev;
+ dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
+ kfree(pkt->va_base);
+ kfree(pkt);
+ return -ENOMEM;
+ }
+
+ pkt->pa_base = dma_addr;
+
+ return 0;
+}
+
+static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
+{
+ struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
+
+ dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
+ DMA_TO_DEVICE);
+ kfree(pkt->va_base);
+ kfree(pkt);
+}
+#endif
+
static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
{
struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
mtk_mutex_put(mtk_crtc->mutex);
-
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+ mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+#endif
drm_crtc_cleanup(crtc);
}
@@ -227,12 +271,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
- struct cmdq_cb_data *data = mssg;
struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
mtk_crtc->cmdq_vblank_cnt = 0;
- cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -438,7 +480,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
bool needs_vblank)
{
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_pkt *cmdq_handle;
+ struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
#endif
struct drm_crtc *crtc = &mtk_crtc->base;
struct mtk_drm_private *priv = crtc->dev->dev_private;
@@ -478,7 +520,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
if (mtk_crtc->cmdq_client.chan) {
mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
- cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
+ cmdq_handle->cmd_buf_size = 0;
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
@@ -877,6 +919,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
drm_crtc_index(&mtk_crtc->base));
mbox_free_channel(mtk_crtc->cmdq_client.chan);
mtk_crtc->cmdq_client.chan = NULL;
+ } else {
+ ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
+ &mtk_crtc->cmdq_handle,
+ PAGE_SIZE);
+ if (ret) {
+ dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
+ drm_crtc_index(&mtk_crtc->base));
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
+ }
}
}
#endif
--
2.18.0
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 4/6] drm/mediatek: Add cmdq_handle in mtk_crtc
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
One mtk_crtc need just one cmdq_handle, so add one cmdq_handle
in mtk_crtc to prevent frequently allocation and free of
cmdq_handle.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 62 +++++++++++++++++++++++--
1 file changed, 57 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index dad1f85ee315..ffa54b416ca7 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -53,6 +53,7 @@ struct mtk_drm_crtc {
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct cmdq_client cmdq_client;
+ struct cmdq_pkt cmdq_handle;
u32 cmdq_event;
u32 cmdq_vblank_cnt;
#endif
@@ -107,12 +108,55 @@ static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
}
}
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
+ size_t size)
+{
+ struct device *dev;
+ dma_addr_t dma_addr;
+
+ pkt->va_base = kzalloc(size, GFP_KERNEL);
+ if (!pkt->va_base) {
+ kfree(pkt);
+ return -ENOMEM;
+ }
+ pkt->buf_size = size;
+ pkt->cl = (void *)client;
+
+ dev = client->chan->mbox->dev;
+ dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
+ kfree(pkt->va_base);
+ kfree(pkt);
+ return -ENOMEM;
+ }
+
+ pkt->pa_base = dma_addr;
+
+ return 0;
+}
+
+static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
+{
+ struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
+
+ dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
+ DMA_TO_DEVICE);
+ kfree(pkt->va_base);
+ kfree(pkt);
+}
+#endif
+
static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
{
struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
mtk_mutex_put(mtk_crtc->mutex);
-
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+ mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+#endif
drm_crtc_cleanup(crtc);
}
@@ -227,12 +271,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
- struct cmdq_cb_data *data = mssg;
struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
mtk_crtc->cmdq_vblank_cnt = 0;
- cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -438,7 +480,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
bool needs_vblank)
{
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_pkt *cmdq_handle;
+ struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
#endif
struct drm_crtc *crtc = &mtk_crtc->base;
struct mtk_drm_private *priv = crtc->dev->dev_private;
@@ -478,7 +520,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
if (mtk_crtc->cmdq_client.chan) {
mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
- cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
+ cmdq_handle->cmd_buf_size = 0;
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
@@ -877,6 +919,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
drm_crtc_index(&mtk_crtc->base));
mbox_free_channel(mtk_crtc->cmdq_client.chan);
mtk_crtc->cmdq_client.chan = NULL;
+ } else {
+ ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
+ &mtk_crtc->cmdq_handle,
+ PAGE_SIZE);
+ if (ret) {
+ dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
+ drm_crtc_index(&mtk_crtc->base));
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
+ }
}
}
#endif
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 4/6] drm/mediatek: Add cmdq_handle in mtk_crtc
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
One mtk_crtc need just one cmdq_handle, so add one cmdq_handle
in mtk_crtc to prevent frequently allocation and free of
cmdq_handle.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 62 +++++++++++++++++++++++--
1 file changed, 57 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index dad1f85ee315..ffa54b416ca7 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -53,6 +53,7 @@ struct mtk_drm_crtc {
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct cmdq_client cmdq_client;
+ struct cmdq_pkt cmdq_handle;
u32 cmdq_event;
u32 cmdq_vblank_cnt;
#endif
@@ -107,12 +108,55 @@ static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
}
}
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
+ size_t size)
+{
+ struct device *dev;
+ dma_addr_t dma_addr;
+
+ pkt->va_base = kzalloc(size, GFP_KERNEL);
+ if (!pkt->va_base) {
+ kfree(pkt);
+ return -ENOMEM;
+ }
+ pkt->buf_size = size;
+ pkt->cl = (void *)client;
+
+ dev = client->chan->mbox->dev;
+ dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, dma_addr)) {
+ dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
+ kfree(pkt->va_base);
+ kfree(pkt);
+ return -ENOMEM;
+ }
+
+ pkt->pa_base = dma_addr;
+
+ return 0;
+}
+
+static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
+{
+ struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
+
+ dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
+ DMA_TO_DEVICE);
+ kfree(pkt->va_base);
+ kfree(pkt);
+}
+#endif
+
static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
{
struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
mtk_mutex_put(mtk_crtc->mutex);
-
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+ mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+#endif
drm_crtc_cleanup(crtc);
}
@@ -227,12 +271,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
- struct cmdq_cb_data *data = mssg;
struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
mtk_crtc->cmdq_vblank_cnt = 0;
- cmdq_pkt_destroy(data->pkt);
}
#endif
@@ -438,7 +480,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
bool needs_vblank)
{
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_pkt *cmdq_handle;
+ struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
#endif
struct drm_crtc *crtc = &mtk_crtc->base;
struct mtk_drm_private *priv = crtc->dev->dev_private;
@@ -478,7 +520,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
if (mtk_crtc->cmdq_client.chan) {
mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
- cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
+ cmdq_handle->cmd_buf_size = 0;
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
@@ -877,6 +919,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
drm_crtc_index(&mtk_crtc->base));
mbox_free_channel(mtk_crtc->cmdq_client.chan);
mtk_crtc->cmdq_client.chan = NULL;
+ } else {
+ ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
+ &mtk_crtc->cmdq_handle,
+ PAGE_SIZE);
+ if (ret) {
+ dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
+ drm_crtc_index(&mtk_crtc->base));
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
+ }
}
}
#endif
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply related [flat|nested] 40+ messages in thread* Re: [PATCH v5 4/6] drm/mediatek: Add cmdq_handle in mtk_crtc
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 23:32 ` Chun-Kuang Hu
-1 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:32 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, fshao, Nancy Lin, singo.chang
Hi, Jason:
jason-jh.lin <jason-jh.lin@mediatek.com> 於 2021年10月27日 週三 上午10:19寫道：
>
> From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> One mtk_crtc need just one cmdq_handle, so add one cmdq_handle
> in mtk_crtc to prevent frequently allocation and free of
> cmdq_handle.
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 62 +++++++++++++++++++++++--
> 1 file changed, 57 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index dad1f85ee315..ffa54b416ca7 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -53,6 +53,7 @@ struct mtk_drm_crtc {
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> struct cmdq_client cmdq_client;
> + struct cmdq_pkt cmdq_handle;
> u32 cmdq_event;
> u32 cmdq_vblank_cnt;
> #endif
> @@ -107,12 +108,55 @@ static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
> }
> }
>
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> +static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
> + size_t size)
> +{
> + struct device *dev;
> + dma_addr_t dma_addr;
> +
> + pkt->va_base = kzalloc(size, GFP_KERNEL);
> + if (!pkt->va_base) {
> + kfree(pkt);
> + return -ENOMEM;
> + }
> + pkt->buf_size = size;
> + pkt->cl = (void *)client;
> +
> + dev = client->chan->mbox->dev;
> + dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(dev, dma_addr)) {
> + dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
> + kfree(pkt->va_base);
> + kfree(pkt);
> + return -ENOMEM;
> + }
> +
> + pkt->pa_base = dma_addr;
> +
> + return 0;
> +}
> +
> +static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
> +{
> + struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
> +
> + dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
> + DMA_TO_DEVICE);
> + kfree(pkt->va_base);
> + kfree(pkt);
> +}
> +#endif
> +
> static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
> {
> struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
>
> mtk_mutex_put(mtk_crtc->mutex);
> -
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> + mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
> +#endif
> drm_crtc_cleanup(crtc);
> }
>
> @@ -227,12 +271,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> {
> - struct cmdq_cb_data *data = mssg;
> struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
>
> mtk_crtc->cmdq_vblank_cnt = 0;
> - cmdq_pkt_destroy(data->pkt);
> }
> #endif
>
> @@ -438,7 +480,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
> bool needs_vblank)
> {
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> - struct cmdq_pkt *cmdq_handle;
> + struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
> #endif
> struct drm_crtc *crtc = &mtk_crtc->base;
> struct mtk_drm_private *priv = crtc->dev->dev_private;
> @@ -478,7 +520,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> if (mtk_crtc->cmdq_client.chan) {
> mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
> - cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
> + cmdq_handle->cmd_buf_size = 0;
> cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
> cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
> mtk_crtc_ddp_config(crtc, cmdq_handle);
> @@ -877,6 +919,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
> drm_crtc_index(&mtk_crtc->base));
> mbox_free_channel(mtk_crtc->cmdq_client.chan);
> mtk_crtc->cmdq_client.chan = NULL;
> + } else {
> + ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
> + &mtk_crtc->cmdq_handle,
> + PAGE_SIZE);
> + if (ret) {
> + dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
> + drm_crtc_index(&mtk_crtc->base));
> + mbox_free_channel(mtk_crtc->cmdq_client.chan);
> + mtk_crtc->cmdq_client.chan = NULL;
> + }
> }
> }
> #endif
> --
> 2.18.0
>
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 4/6] drm/mediatek: Add cmdq_handle in mtk_crtc
@ 2021-10-27 23:32 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:32 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, fshao, Nancy Lin, singo.chang
Hi, Jason:
jason-jh.lin <jason-jh.lin@mediatek.com> 於 2021年10月27日 週三 上午10:19寫道：
>
> From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> One mtk_crtc need just one cmdq_handle, so add one cmdq_handle
> in mtk_crtc to prevent frequently allocation and free of
> cmdq_handle.
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 62 +++++++++++++++++++++++--
> 1 file changed, 57 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index dad1f85ee315..ffa54b416ca7 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -53,6 +53,7 @@ struct mtk_drm_crtc {
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> struct cmdq_client cmdq_client;
> + struct cmdq_pkt cmdq_handle;
> u32 cmdq_event;
> u32 cmdq_vblank_cnt;
> #endif
> @@ -107,12 +108,55 @@ static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
> }
> }
>
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> +static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
> + size_t size)
> +{
> + struct device *dev;
> + dma_addr_t dma_addr;
> +
> + pkt->va_base = kzalloc(size, GFP_KERNEL);
> + if (!pkt->va_base) {
> + kfree(pkt);
> + return -ENOMEM;
> + }
> + pkt->buf_size = size;
> + pkt->cl = (void *)client;
> +
> + dev = client->chan->mbox->dev;
> + dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(dev, dma_addr)) {
> + dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
> + kfree(pkt->va_base);
> + kfree(pkt);
> + return -ENOMEM;
> + }
> +
> + pkt->pa_base = dma_addr;
> +
> + return 0;
> +}
> +
> +static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
> +{
> + struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
> +
> + dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
> + DMA_TO_DEVICE);
> + kfree(pkt->va_base);
> + kfree(pkt);
> +}
> +#endif
> +
> static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
> {
> struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
>
> mtk_mutex_put(mtk_crtc->mutex);
> -
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> + mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
> +#endif
> drm_crtc_cleanup(crtc);
> }
>
> @@ -227,12 +271,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> {
> - struct cmdq_cb_data *data = mssg;
> struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
>
> mtk_crtc->cmdq_vblank_cnt = 0;
> - cmdq_pkt_destroy(data->pkt);
> }
> #endif
>
> @@ -438,7 +480,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
> bool needs_vblank)
> {
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> - struct cmdq_pkt *cmdq_handle;
> + struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
> #endif
> struct drm_crtc *crtc = &mtk_crtc->base;
> struct mtk_drm_private *priv = crtc->dev->dev_private;
> @@ -478,7 +520,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> if (mtk_crtc->cmdq_client.chan) {
> mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
> - cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
> + cmdq_handle->cmd_buf_size = 0;
> cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
> cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
> mtk_crtc_ddp_config(crtc, cmdq_handle);
> @@ -877,6 +919,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
> drm_crtc_index(&mtk_crtc->base));
> mbox_free_channel(mtk_crtc->cmdq_client.chan);
> mtk_crtc->cmdq_client.chan = NULL;
> + } else {
> + ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
> + &mtk_crtc->cmdq_handle,
> + PAGE_SIZE);
> + if (ret) {
> + dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
> + drm_crtc_index(&mtk_crtc->base));
> + mbox_free_channel(mtk_crtc->cmdq_client.chan);
> + mtk_crtc->cmdq_client.chan = NULL;
> + }
> }
> }
> #endif
> --
> 2.18.0
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 40+ messages in thread* Re: [PATCH v5 4/6] drm/mediatek: Add cmdq_handle in mtk_crtc
@ 2021-10-27 23:32 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:32 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, fshao, Nancy Lin, singo.chang
Hi, Jason:
jason-jh.lin <jason-jh.lin@mediatek.com> 於 2021年10月27日 週三 上午10:19寫道：
>
> From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> One mtk_crtc need just one cmdq_handle, so add one cmdq_handle
> in mtk_crtc to prevent frequently allocation and free of
> cmdq_handle.
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 62 +++++++++++++++++++++++--
> 1 file changed, 57 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index dad1f85ee315..ffa54b416ca7 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -53,6 +53,7 @@ struct mtk_drm_crtc {
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> struct cmdq_client cmdq_client;
> + struct cmdq_pkt cmdq_handle;
> u32 cmdq_event;
> u32 cmdq_vblank_cnt;
> #endif
> @@ -107,12 +108,55 @@ static void mtk_drm_finish_page_flip(struct mtk_drm_crtc *mtk_crtc)
> }
> }
>
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> +static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
> + size_t size)
> +{
> + struct device *dev;
> + dma_addr_t dma_addr;
> +
> + pkt->va_base = kzalloc(size, GFP_KERNEL);
> + if (!pkt->va_base) {
> + kfree(pkt);
> + return -ENOMEM;
> + }
> + pkt->buf_size = size;
> + pkt->cl = (void *)client;
> +
> + dev = client->chan->mbox->dev;
> + dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(dev, dma_addr)) {
> + dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
> + kfree(pkt->va_base);
> + kfree(pkt);
> + return -ENOMEM;
> + }
> +
> + pkt->pa_base = dma_addr;
> +
> + return 0;
> +}
> +
> +static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
> +{
> + struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
> +
> + dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
> + DMA_TO_DEVICE);
> + kfree(pkt->va_base);
> + kfree(pkt);
> +}
> +#endif
> +
> static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
> {
> struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
>
> mtk_mutex_put(mtk_crtc->mutex);
> -
> +#if IS_REACHABLE(CONFIG_MTK_CMDQ)
> + mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
> +#endif
> drm_crtc_cleanup(crtc);
> }
>
> @@ -227,12 +271,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
> {
> - struct cmdq_cb_data *data = mssg;
> struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
> struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
>
> mtk_crtc->cmdq_vblank_cnt = 0;
> - cmdq_pkt_destroy(data->pkt);
> }
> #endif
>
> @@ -438,7 +480,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
> bool needs_vblank)
> {
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> - struct cmdq_pkt *cmdq_handle;
> + struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
> #endif
> struct drm_crtc *crtc = &mtk_crtc->base;
> struct mtk_drm_private *priv = crtc->dev->dev_private;
> @@ -478,7 +520,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> if (mtk_crtc->cmdq_client.chan) {
> mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
> - cmdq_handle = cmdq_pkt_create(&mtk_crtc->cmdq_client, PAGE_SIZE);
> + cmdq_handle->cmd_buf_size = 0;
> cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
> cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
> mtk_crtc_ddp_config(crtc, cmdq_handle);
> @@ -877,6 +919,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
> drm_crtc_index(&mtk_crtc->base));
> mbox_free_channel(mtk_crtc->cmdq_client.chan);
> mtk_crtc->cmdq_client.chan = NULL;
> + } else {
> + ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
> + &mtk_crtc->cmdq_handle,
> + PAGE_SIZE);
> + if (ret) {
> + dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
> + drm_crtc_index(&mtk_crtc->base));
> + mbox_free_channel(mtk_crtc->cmdq_client.chan);
> + mtk_crtc->cmdq_client.chan = NULL;
> + }
> }
> }
> #endif
> --
> 2.18.0
>
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 40+ messages in thread
* [PATCH v5 5/6] drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 2:18 ` jason-jh.lin
-1 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
Add mbox_free_channel in mtk_drm_crtc_destroy.
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index ffa54b416ca7..31f05efc1bc0 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -156,6 +156,10 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
mtk_mutex_put(mtk_crtc->mutex);
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+
+ if (mtk_crtc->cmdq_client.chan)
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
#endif
drm_crtc_cleanup(crtc);
}
--
2.18.0
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v5 5/6] drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
Add mbox_free_channel in mtk_drm_crtc_destroy.
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index ffa54b416ca7..31f05efc1bc0 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -156,6 +156,10 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
mtk_mutex_put(mtk_crtc->mutex);
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+
+ if (mtk_crtc->cmdq_client.chan)
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
#endif
drm_crtc_cleanup(crtc);
}
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v5 5/6] drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
Add mbox_free_channel in mtk_drm_crtc_destroy.
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index ffa54b416ca7..31f05efc1bc0 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -156,6 +156,10 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
mtk_mutex_put(mtk_crtc->mutex);
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+
+ if (mtk_crtc->cmdq_client.chan)
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
#endif
drm_crtc_cleanup(crtc);
}
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply related [flat|nested] 40+ messages in thread
* Re: [PATCH v5 5/6] drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 23:30 ` Chun-Kuang Hu
-1 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:30 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, fshao, Nancy Lin, singo.chang
Hi, Jason:
jason-jh.lin <jason-jh.lin@mediatek.com> 於 2021年10月27日 週三 上午10:19寫道：
>
> Add mbox_free_channel in mtk_drm_crtc_destroy.
>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index ffa54b416ca7..31f05efc1bc0 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -156,6 +156,10 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
> mtk_mutex_put(mtk_crtc->mutex);
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
> +
> + if (mtk_crtc->cmdq_client.chan)
> + mbox_free_channel(mtk_crtc->cmdq_client.chan);
> + mtk_crtc->cmdq_client.chan = NULL;
Except the indent,
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> #endif
> drm_crtc_cleanup(crtc);
> }
> --
> 2.18.0
>
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v5 5/6] drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
@ 2021-10-27 23:30 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:30 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, fshao, Nancy Lin, singo.chang
Hi, Jason:
jason-jh.lin <jason-jh.lin@mediatek.com> 於 2021年10月27日 週三 上午10:19寫道：
>
> Add mbox_free_channel in mtk_drm_crtc_destroy.
>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index ffa54b416ca7..31f05efc1bc0 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -156,6 +156,10 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
> mtk_mutex_put(mtk_crtc->mutex);
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
> +
> + if (mtk_crtc->cmdq_client.chan)
> + mbox_free_channel(mtk_crtc->cmdq_client.chan);
> + mtk_crtc->cmdq_client.chan = NULL;
Except the indent,
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> #endif
> drm_crtc_cleanup(crtc);
> }
> --
> 2.18.0
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v5 5/6] drm/mediatek: Add mbox_free_channel in mtk_drm_crtc_destroy
@ 2021-10-27 23:30 ` Chun-Kuang Hu
0 siblings, 0 replies; 40+ messages in thread
From: Chun-Kuang Hu @ 2021-10-27 23:30 UTC (permalink / raw)
To: jason-jh.lin
Cc: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu, David Airlie, Daniel Vetter, DRI Development,
moderated list:ARM/Mediatek SoC support, Linux ARM, linux-kernel,
Hsin-Yi Wang, fshao, Nancy Lin, singo.chang
Hi, Jason:
jason-jh.lin <jason-jh.lin@mediatek.com> 於 2021年10月27日 週三 上午10:19寫道：
>
> Add mbox_free_channel in mtk_drm_crtc_destroy.
>
> Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index ffa54b416ca7..31f05efc1bc0 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -156,6 +156,10 @@ static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
> mtk_mutex_put(mtk_crtc->mutex);
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
> +
> + if (mtk_crtc->cmdq_client.chan)
> + mbox_free_channel(mtk_crtc->cmdq_client.chan);
> + mtk_crtc->cmdq_client.chan = NULL;
Except the indent,
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> #endif
> drm_crtc_cleanup(crtc);
> }
> --
> 2.18.0
>
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 40+ messages in thread
* [PATCH v5 6/6] drm/mediatek: Clear pending flag when cmdq packet is done
2021-10-27 2:18 ` jason-jh.lin
(?)
@ 2021-10-27 2:18 ` jason-jh.lin
-1 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Yongqiang Niu <yongqiang.niu@mediatek.com>
In cmdq mode, packet may be flushed before it is executed, so
the pending flag should be cleared after cmdq packet is done.
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 51 ++++++++++++++++++++++---
1 file changed, 46 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 31f05efc1bc0..ea285795776f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -275,8 +275,42 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
+ struct cmdq_cb_data *data = mssg;
struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
+ struct mtk_crtc_state *state;
+ unsigned int i;
+
+ if (data->sta < 0)
+ return;
+
+ state = to_mtk_crtc_state(mtk_crtc->base.state);
+
+ state->pending_config = false;
+
+ if (mtk_crtc->pending_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.config = false;
+ }
+ mtk_crtc->pending_planes = false;
+ }
+
+ if (mtk_crtc->pending_async_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.async_config = false;
+ }
+ mtk_crtc->pending_async_planes = false;
+ }
mtk_crtc->cmdq_vblank_cnt = 0;
}
@@ -432,7 +466,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
state->pending_vrefresh, 0,
cmdq_handle);
- state->pending_config = false;
+ if (!cmdq_handle)
+ state->pending_config = false;
}
if (mtk_crtc->pending_planes) {
@@ -452,9 +487,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.config = false;
+ if (!cmdq_handle)
+ plane_state->pending.config = false;
}
- mtk_crtc->pending_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_planes = false;
}
if (mtk_crtc->pending_async_planes) {
@@ -474,9 +512,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.async_config = false;
+ if (!cmdq_handle)
+ plane_state->pending.async_config = false;
}
- mtk_crtc->pending_async_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_async_planes = false;
}
}
--
2.18.0
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 6/6] drm/mediatek: Clear pending flag when cmdq packet is done
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Yongqiang Niu <yongqiang.niu@mediatek.com>
In cmdq mode, packet may be flushed before it is executed, so
the pending flag should be cleared after cmdq packet is done.
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 51 ++++++++++++++++++++++---
1 file changed, 46 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 31f05efc1bc0..ea285795776f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -275,8 +275,42 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
+ struct cmdq_cb_data *data = mssg;
struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
+ struct mtk_crtc_state *state;
+ unsigned int i;
+
+ if (data->sta < 0)
+ return;
+
+ state = to_mtk_crtc_state(mtk_crtc->base.state);
+
+ state->pending_config = false;
+
+ if (mtk_crtc->pending_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.config = false;
+ }
+ mtk_crtc->pending_planes = false;
+ }
+
+ if (mtk_crtc->pending_async_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.async_config = false;
+ }
+ mtk_crtc->pending_async_planes = false;
+ }
mtk_crtc->cmdq_vblank_cnt = 0;
}
@@ -432,7 +466,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
state->pending_vrefresh, 0,
cmdq_handle);
- state->pending_config = false;
+ if (!cmdq_handle)
+ state->pending_config = false;
}
if (mtk_crtc->pending_planes) {
@@ -452,9 +487,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.config = false;
+ if (!cmdq_handle)
+ plane_state->pending.config = false;
}
- mtk_crtc->pending_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_planes = false;
}
if (mtk_crtc->pending_async_planes) {
@@ -474,9 +512,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.async_config = false;
+ if (!cmdq_handle)
+ plane_state->pending.async_config = false;
}
- mtk_crtc->pending_async_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_async_planes = false;
}
}
--
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 6/6] drm/mediatek: Clear pending flag when cmdq packet is done
@ 2021-10-27 2:18 ` jason-jh.lin
0 siblings, 0 replies; 40+ messages in thread
From: jason-jh.lin @ 2021-10-27 2:18 UTC (permalink / raw)
To: Chun-Kuang Hu, Philipp Zabel, Matthias Brugger, Jassi Brar,
Yongqiang Niu
Cc: David Airlie, Daniel Vetter, jason-jh . lin, dri-devel,
linux-mediatek, linux-arm-kernel, linux-kernel, hsinyi, fshao,
nancy.lin, singo.chang
From: Yongqiang Niu <yongqiang.niu@mediatek.com>
In cmdq mode, packet may be flushed before it is executed, so
the pending flag should be cleared after cmdq packet is done.
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 51 ++++++++++++++++++++++---
1 file changed, 46 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 31f05efc1bc0..ea285795776f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -275,8 +275,42 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
+ struct cmdq_cb_data *data = mssg;
struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
+ struct mtk_crtc_state *state;
+ unsigned int i;
+
+ if (data->sta < 0)
+ return;
+
+ state = to_mtk_crtc_state(mtk_crtc->base.state);
+
+ state->pending_config = false;
+
+ if (mtk_crtc->pending_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.config = false;
+ }
+ mtk_crtc->pending_planes = false;
+ }
+
+ if (mtk_crtc->pending_async_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.async_config = false;
+ }
+ mtk_crtc->pending_async_planes = false;
+ }
mtk_crtc->cmdq_vblank_cnt = 0;
}
@@ -432,7 +466,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
state->pending_vrefresh, 0,
cmdq_handle);
- state->pending_config = false;
+ if (!cmdq_handle)
+ state->pending_config = false;
}
if (mtk_crtc->pending_planes) {
@@ -452,9 +487,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.config = false;
+ if (!cmdq_handle)
+ plane_state->pending.config = false;
}
- mtk_crtc->pending_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_planes = false;
}
if (mtk_crtc->pending_async_planes) {
@@ -474,9 +512,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.async_config = false;
+ if (!cmdq_handle)
+ plane_state->pending.async_config = false;
}
- mtk_crtc->pending_async_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_async_planes = false;
}
}
--
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply related [flat|nested] 40+ messages in thread