[PATCH v7 12/12] media: platform: mtk-mdp3: reconfigure shared memory

From: Moudy Ho
Date: Sun Mar 26 2023 - 23:15:30 EST

For performance and multi-chip support, use dynamic layout instead of
statically configured pools.
Divide the shared memory into the 3 64-bit aligned layouts listed below:

vpu->param_addr -> +-----------------------------------------+
| |
| To SCP : Input frame parameters |
| (struct img_ipi_frameparam) |
| |
+-----------------------------------------+

vpu->work_addr -> +-----------------------------------------+
| |
| In SCP : Reserve for SCP calculation |
| |
+-----------------------------------------+

vpu->config_addr -> +-----------------------------------------+
| |
| From SCP : Output component config |
| (struct img_config) |
| |
+-----------------------------------------+

Signed-off-by: Moudy Ho <moudy.ho@xxxxxxxxxxxx>
---
.../platform/mediatek/mdp3/mdp_sm_mt8183.h | 4 +-
.../platform/mediatek/mdp3/mtk-mdp3-m2m.c | 13 +-
.../platform/mediatek/mdp3/mtk-mdp3-m2m.h | 1 -
.../platform/mediatek/mdp3/mtk-mdp3-vpu.c | 193 ++++++++----------
.../platform/mediatek/mdp3/mtk-mdp3-vpu.h | 29 +--
5 files changed, 95 insertions(+), 145 deletions(-)

diff --git a/drivers/media/platform/mediatek/mdp3/mdp_sm_mt8183.h b/drivers/media/platform/mediatek/mdp3/mdp_sm_mt8183.h
index effc75615af9..85637084520f 100644
--- a/drivers/media/platform/mediatek/mdp3/mdp_sm_mt8183.h
+++ b/drivers/media/platform/mediatek/mdp3/mdp_sm_mt8183.h
@@ -11,8 +11,8 @@

/*
* ISP-MDP generic output information
- * MD5 of the target SCP blob:
- * 6da52bdcf4bf76a0983b313e1d4745d6
+ * MD5 of the target SCP prebuild:
+ * 2d995ddb5c3b0cf26e96d6a823481886
*/

#define IMG_MAX_SUBFRAMES_8183 14
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.c
index 27e1b1b8c6b4..a298c1b15b9e 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.c
@@ -87,14 +87,14 @@ static void mdp_m2m_device_run(void *priv)
dst_vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
mdp_set_dst_config(&param.outputs[0], frame, &dst_vb->vb2_buf);

- ret = mdp_vpu_process(&ctx->vpu, &param);
+ ret = mdp_vpu_process(&ctx->mdp_dev->vpu, &param);
if (ret) {
dev_err(&ctx->mdp_dev->pdev->dev,
"VPU MDP process failed: %d\n", ret);
goto worker_end;
}

- task.config = ctx->vpu.config;
+ task.config = ctx->mdp_dev->vpu.config;
task.param = &param;
task.composes[0] = &frame->compose;
task.cmdq_cb = NULL;
@@ -150,11 +150,6 @@ static int mdp_m2m_start_streaming(struct vb2_queue *q, unsigned int count)

if (!mdp_m2m_ctx_is_state_set(ctx, MDP_VPU_INIT)) {
ret = mdp_vpu_get_locked(ctx->mdp_dev);
- if (ret)
- return ret;
-
- ret = mdp_vpu_ctx_init(&ctx->vpu, &ctx->mdp_dev->vpu,
- MDP_DEV_M2M);
if (ret) {
dev_err(&ctx->mdp_dev->pdev->dev,
"VPU init failed %d\n", ret);
@@ -641,10 +636,8 @@ static int mdp_m2m_release(struct file *file)

mutex_lock(&mdp->m2m_lock);
v4l2_m2m_ctx_release(ctx->m2m_ctx);
- if (mdp_m2m_ctx_is_state_set(ctx, MDP_VPU_INIT)) {
- mdp_vpu_ctx_deinit(&ctx->vpu);
+ if (mdp_m2m_ctx_is_state_set(ctx, MDP_VPU_INIT))
mdp_vpu_put_locked(mdp);
- }

v4l2_ctrl_handler_free(&ctx->ctrl_handler);
v4l2_fh_del(&ctx->fh);
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.h
index 61ddbaf1bf13..dfc59e5b3b87 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.h
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-m2m.h
@@ -33,7 +33,6 @@ struct mdp_m2m_ctx {
struct v4l2_ctrl_handler ctrl_handler;
struct mdp_m2m_ctrls ctrls;
struct v4l2_m2m_ctx *m2m_ctx;
- struct mdp_vpu_ctx vpu;
u32 frame_count[MDP_M2M_MAX];

struct mdp_frameparam curr_param;
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c
index a72bed927bb6..49fc2e9d45dd 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.c
@@ -10,7 +10,6 @@
#include "mtk-mdp3-core.h"

#define MDP_VPU_MESSAGE_TIMEOUT 500U
-#define vpu_alloc_size 0x600000

static inline struct mdp_dev *vpu_to_mdp(struct mdp_vpu_dev *vpu)
{
@@ -19,23 +18,63 @@ static inline struct mdp_dev *vpu_to_mdp(struct mdp_vpu_dev *vpu)

static int mdp_vpu_shared_mem_alloc(struct mdp_vpu_dev *vpu)
{
- if (vpu->work && vpu->work_addr)
- return 0;
+ struct device *dev;

- vpu->work = dma_alloc_coherent(scp_get_device(vpu->scp), vpu_alloc_size,
- &vpu->work_addr, GFP_KERNEL);
+ if (IS_ERR_OR_NULL(vpu))
+ goto err_return;

- if (!vpu->work)
- return -ENOMEM;
- else
- return 0;
+ dev = scp_get_device(vpu->scp);
+
+ if (!vpu->param) {
+ vpu->param = dma_alloc_wc(dev, vpu->param_size,
+ &vpu->param_addr, GFP_KERNEL);
+ if (!vpu->param)
+ goto err_return;
+ }
+
+ if (!vpu->work) {
+ vpu->work = dma_alloc_wc(dev, vpu->work_size,
+ &vpu->work_addr, GFP_KERNEL);
+ if (!vpu->work)
+ goto err_free_param;
+ }
+
+ if (!vpu->config) {
+ vpu->config = dma_alloc_wc(dev, vpu->config_size,
+ &vpu->config_addr, GFP_KERNEL);
+ if (!vpu->config)
+ goto err_free_work;
+ }
+
+ return 0;
+
+err_free_work:
+ dma_free_wc(dev, vpu->work_size, vpu->work, vpu->work_addr);
+ vpu->work = NULL;
+err_free_param:
+ dma_free_wc(dev, vpu->param_size, vpu->param, vpu->param_addr);
+ vpu->param = NULL;
+err_return:
+ return -ENOMEM;
}

void mdp_vpu_shared_mem_free(struct mdp_vpu_dev *vpu)
{
+ struct device *dev;
+
+ if (IS_ERR_OR_NULL(vpu))
+ return;
+
+ dev = scp_get_device(vpu->scp);
+
+ if (vpu->param && vpu->param_addr)
+ dma_free_wc(dev, vpu->param_size, vpu->param, vpu->param_addr);
+
if (vpu->work && vpu->work_addr)
- dma_free_coherent(scp_get_device(vpu->scp), vpu_alloc_size,
- vpu->work, vpu->work_addr);
+ dma_free_wc(dev, vpu->work_size, vpu->work, vpu->work_addr);
+
+ if (vpu->config && vpu->config_addr)
+ dma_free_wc(dev, vpu->config_size, vpu->config, vpu->config_addr);
}

static void mdp_vpu_ipi_handle_init_ack(void *data, unsigned int len,
@@ -69,16 +108,16 @@ static void mdp_vpu_ipi_handle_frame_ack(void *data, unsigned int len,
struct img_sw_addr *addr = (struct img_sw_addr *)data;
struct img_ipi_frameparam *param =
(struct img_ipi_frameparam *)(unsigned long)addr->va;
- struct mdp_vpu_ctx *ctx =
- (struct mdp_vpu_ctx *)(unsigned long)param->drv_data;
+ struct mdp_vpu_dev *vpu =
+ (struct mdp_vpu_dev *)(unsigned long)param->drv_data;

if (param->state) {
- struct mdp_dev *mdp = vpu_to_mdp(ctx->vpu_dev);
+ struct mdp_dev *mdp = vpu_to_mdp(vpu);

dev_err(&mdp->pdev->dev, "VPU MDP failure:%d\n", param->state);
}
- ctx->vpu_dev->status = param->state;
- complete(&ctx->vpu_dev->ipi_acked);
+ vpu->status = param->state;
+ complete(&vpu->ipi_acked);
}

int mdp_vpu_register(struct mdp_dev *mdp)
@@ -157,9 +196,6 @@ int mdp_vpu_dev_init(struct mdp_vpu_dev *vpu, struct mtk_scp *scp,
struct mdp_ipi_init_msg msg = {
.drv_data = (unsigned long)vpu,
};
- size_t mem_size;
- phys_addr_t pool;
- const size_t pool_size = sizeof(struct mdp_config_pool);
struct mdp_dev *mdp = vpu_to_mdp(vpu);
int err;

@@ -172,34 +208,29 @@ int mdp_vpu_dev_init(struct mdp_vpu_dev *vpu, struct mtk_scp *scp,
goto err_work_size;
/* vpu work_size was set in mdp_vpu_ipi_handle_init_ack */

- mem_size = vpu_alloc_size;
+ mutex_lock(vpu->lock);
+ vpu->work_size = ALIGN(vpu->work_size, 64);
+ vpu->param_size = ALIGN(sizeof(struct img_ipi_frameparam), 64);
+ vpu->config_size = ALIGN(sizeof(struct img_config), 64);
err = mdp_vpu_shared_mem_alloc(vpu);
+ mutex_unlock(vpu->lock);
if (err) {
dev_err(&mdp->pdev->dev, "VPU memory alloc fail!");
goto err_mem_alloc;
}

- pool = ALIGN((uintptr_t)vpu->work + vpu->work_size, 8);
- if (pool + pool_size - (uintptr_t)vpu->work > mem_size) {
- dev_err(&mdp->pdev->dev,
- "VPU memory insufficient: %zx + %zx > %zx",
- vpu->work_size, pool_size, mem_size);
- err = -ENOMEM;
- goto err_mem_size;
- }
-
dev_dbg(&mdp->pdev->dev,
- "VPU work:%pK pa:%pad sz:%zx pool:%pa sz:%zx (mem sz:%zx)",
+ "VPU param:%pK pa:%pad sz:%zx, work:%pK pa:%pad sz:%zx, config:%pK pa:%pad sz:%zx",
+ vpu->param, &vpu->param_addr, vpu->param_size,
vpu->work, &vpu->work_addr, vpu->work_size,
- &pool, pool_size, mem_size);
- vpu->pool = (struct mdp_config_pool *)(uintptr_t)pool;
+ vpu->config, &vpu->config_addr, vpu->config_size);
+
msg.work_addr = vpu->work_addr;
msg.work_size = vpu->work_size;
err = mdp_vpu_sendmsg(vpu, SCP_IPI_MDP_INIT, &msg, sizeof(msg));
if (err)
goto err_work_size;

- memset(vpu->pool, 0, sizeof(*vpu->pool));
return 0;

err_work_size:
@@ -212,7 +243,6 @@ int mdp_vpu_dev_init(struct mdp_vpu_dev *vpu, struct mtk_scp *scp,
break;
}
return err;
-err_mem_size:
err_mem_alloc:
return err;
}
@@ -227,88 +257,31 @@ int mdp_vpu_dev_deinit(struct mdp_vpu_dev *vpu)
return mdp_vpu_sendmsg(vpu, SCP_IPI_MDP_DEINIT, &msg, sizeof(msg));
}

-static struct img_config *mdp_config_get(struct mdp_vpu_dev *vpu,
- enum mdp_config_id id, uint32_t *addr)
+int mdp_vpu_process(struct mdp_vpu_dev *vpu, struct img_ipi_frameparam *param)
{
- struct img_config *config;
-
- if (id < 0 || id >= MDP_CONFIG_POOL_SIZE)
- return ERR_PTR(-EINVAL);
+ struct mdp_dev *mdp = vpu_to_mdp(vpu);
+ struct img_sw_addr addr;

mutex_lock(vpu->lock);
- vpu->pool->cfg_count[id]++;
- config = &vpu->pool->configs[id];
- *addr = vpu->work_addr + ((uintptr_t)config - (uintptr_t)vpu->work);
- mutex_unlock(vpu->lock);
-
- return config;
-}
-
-static int mdp_config_put(struct mdp_vpu_dev *vpu,
- enum mdp_config_id id,
- const struct img_config *config)
-{
- int err = 0;
-
- if (id < 0 || id >= MDP_CONFIG_POOL_SIZE)
- return -EINVAL;
- if (vpu->lock)
- mutex_lock(vpu->lock);
- if (!vpu->pool->cfg_count[id] || config != &vpu->pool->configs[id])
- err = -EINVAL;
- else
- vpu->pool->cfg_count[id]--;
- if (vpu->lock)
+ if (mdp_vpu_shared_mem_alloc(vpu)) {
+ dev_err(&mdp->pdev->dev, "VPU memory alloc fail!");
mutex_unlock(vpu->lock);
- return err;
-}
-
-int mdp_vpu_ctx_init(struct mdp_vpu_ctx *ctx, struct mdp_vpu_dev *vpu,
- enum mdp_config_id id)
-{
- ctx->config = mdp_config_get(vpu, id, &ctx->inst_addr);
- if (IS_ERR(ctx->config)) {
- int err = PTR_ERR(ctx->config);
-
- ctx->config = NULL;
- return err;
+ return -ENOMEM;
}
- ctx->config_id = id;
- ctx->vpu_dev = vpu;
- return 0;
-}

-int mdp_vpu_ctx_deinit(struct mdp_vpu_ctx *ctx)
-{
- int err = mdp_config_put(ctx->vpu_dev, ctx->config_id, ctx->config);
+ memset(vpu->param, 0, vpu->param_size);
+ memset(vpu->work, 0, vpu->work_size);
+ memset(vpu->config, 0, vpu->config_size);

- ctx->config_id = 0;
- ctx->config = NULL;
- ctx->inst_addr = 0;
- return err;
-}
+ param->self_data.va = (unsigned long)vpu->work;
+ param->self_data.pa = vpu->work_addr;
+ param->config_data.va = (unsigned long)vpu->config;
+ param->config_data.pa = vpu->config_addr;
+ param->drv_data = (unsigned long)vpu;
+ memcpy(vpu->param, param, sizeof(*param));

-int mdp_vpu_process(struct mdp_vpu_ctx *ctx, struct img_ipi_frameparam *param)
-{
- struct mdp_vpu_dev *vpu = ctx->vpu_dev;
- struct mdp_dev *mdp = vpu_to_mdp(vpu);
- struct img_sw_addr addr;
-
- if (!ctx->vpu_dev->work || !ctx->vpu_dev->work_addr) {
- if (mdp_vpu_shared_mem_alloc(vpu)) {
- dev_err(&mdp->pdev->dev, "VPU memory alloc fail!");
- return -ENOMEM;
- }
- }
- memset((void *)ctx->vpu_dev->work, 0, ctx->vpu_dev->work_size);
- memset(ctx->config, 0, sizeof(*ctx->config));
- param->config_data.va = (unsigned long)ctx->config;
- param->config_data.pa = ctx->inst_addr;
- param->drv_data = (unsigned long)ctx;
-
- memcpy((void *)ctx->vpu_dev->work, param, sizeof(*param));
- addr.pa = ctx->vpu_dev->work_addr;
- addr.va = (uintptr_t)ctx->vpu_dev->work;
- return mdp_vpu_sendmsg(ctx->vpu_dev, SCP_IPI_MDP_FRAME,
- &addr, sizeof(addr));
+ addr.pa = vpu->param_addr;
+ addr.va = (unsigned long)vpu->param;
+ mutex_unlock(vpu->lock);
+ return mdp_vpu_sendmsg(vpu, SCP_IPI_MDP_FRAME, &addr, sizeof(addr));
}
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.h
index 244b3a32d689..ad3551bc0730 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.h
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-vpu.h
@@ -37,42 +37,27 @@ struct mdp_ipi_deinit_msg {
u32 work_addr;
} __packed;

-enum mdp_config_id {
- MDP_DEV_M2M = 0,
- MDP_CONFIG_POOL_SIZE /* ALWAYS keep at the end */
-};
-
-struct mdp_config_pool {
- u64 cfg_count[MDP_CONFIG_POOL_SIZE];
- struct img_config configs[MDP_CONFIG_POOL_SIZE];
-};
-
struct mdp_vpu_dev {
/* synchronization protect for accessing vpu working buffer info */
struct mutex *lock;
struct mtk_scp *scp;
struct completion ipi_acked;
+ void *param;
+ dma_addr_t param_addr;
+ size_t param_size;
void *work;
dma_addr_t work_addr;
size_t work_size;
- struct mdp_config_pool *pool;
+ void *config;
+ dma_addr_t config_addr;
+ size_t config_size;
u32 status;
};

-struct mdp_vpu_ctx {
- struct mdp_vpu_dev *vpu_dev;
- u32 config_id;
- struct img_config *config;
- u32 inst_addr;
-};
-
void mdp_vpu_shared_mem_free(struct mdp_vpu_dev *vpu);
int mdp_vpu_dev_init(struct mdp_vpu_dev *vpu, struct mtk_scp *scp,
struct mutex *lock /* for sync */);
int mdp_vpu_dev_deinit(struct mdp_vpu_dev *vpu);
-int mdp_vpu_ctx_init(struct mdp_vpu_ctx *ctx, struct mdp_vpu_dev *vpu,
- enum mdp_config_id id);
-int mdp_vpu_ctx_deinit(struct mdp_vpu_ctx *ctx);
-int mdp_vpu_process(struct mdp_vpu_ctx *vpu, struct img_ipi_frameparam *param);
+int mdp_vpu_process(struct mdp_vpu_dev *vpu, struct img_ipi_frameparam *param);

#endif /* __MTK_MDP3_VPU_H__ */
--
2.18.0