[PATCH v4 04/10] media: verisilicon: Refactor postprocessor to store more buffers
Benjamin Gaignard
benjamin.gaignard at collabora.com
Wed Jul 5 05:10:50 PDT 2023
Since vb2 queue can store than VB2_MAX_FRAME buffers postprocessor
buffer storage must be capable to store more buffers too.
Change static dec_q array to allocated array to be capable to store
up to queue 'max_allowed_buffers'.
Keep allocating queue 'num_buffers' at queue setup time but also allows
to allocate postprocessors buffers on the fly.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard at collabora.com>
---
drivers/media/platform/verisilicon/hantro.h | 7 +-
.../media/platform/verisilicon/hantro_drv.c | 4 +-
.../media/platform/verisilicon/hantro_hw.h | 2 +-
.../platform/verisilicon/hantro_postproc.c | 103 ++++++++++++++----
.../media/platform/verisilicon/hantro_v4l2.c | 2 +-
5 files changed, 93 insertions(+), 25 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
index 2989ebc631cc..c8a3cf10cc64 100644
--- a/drivers/media/platform/verisilicon/hantro.h
+++ b/drivers/media/platform/verisilicon/hantro.h
@@ -461,11 +461,14 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
bool hantro_needs_postproc(const struct hantro_ctx *ctx,
const struct hantro_fmt *fmt);
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index);
+
static inline dma_addr_t
hantro_get_dec_buf_addr(struct hantro_ctx *ctx, struct vb2_buffer *vb)
{
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
- return ctx->postproc.dec_q[vb->index].dma;
+ return hantro_postproc_get_dec_buf_addr(ctx, vb->index);
return vb2_dma_contig_plane_dma_addr(vb, 0);
}
@@ -477,8 +480,8 @@ vb2_to_hantro_decoded_buf(struct vb2_buffer *buf)
void hantro_postproc_disable(struct hantro_ctx *ctx);
void hantro_postproc_enable(struct hantro_ctx *ctx);
+int hantro_postproc_init(struct hantro_ctx *ctx);
void hantro_postproc_free(struct hantro_ctx *ctx);
-int hantro_postproc_alloc(struct hantro_ctx *ctx);
int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
struct v4l2_frmsizeenum *fsize);
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index 09c74a573ddb..d908559817ce 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -234,8 +234,10 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
* The Kernel needs access to the JPEG destination buffer for the
* JPEG encoder to fill in the JPEG headers.
*/
- if (!ctx->is_encoder)
+ if (!ctx->is_encoder) {
dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
+ dst_vq->max_allowed_buffers = 64;
+ }
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index e83f0c523a30..6fd6c9d53cec 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -253,7 +253,7 @@ struct hantro_vp9_dec_hw_ctx {
* @dec_q: References buffers, in decoder format.
*/
struct hantro_postproc_ctx {
- struct hantro_aux_buf dec_q[VB2_MAX_FRAME];
+ struct hantro_aux_buf *dec_q;
};
/**
diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 6437423ccf3a..9dfe3141a398 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -173,9 +173,11 @@ static int hantro_postproc_g2_enum_framesizes(struct hantro_ctx *ctx,
void hantro_postproc_free(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *queue = &m2m_ctx->cap_q_ctx.q;
unsigned int i;
- for (i = 0; i < VB2_MAX_FRAME; ++i) {
+ for (i = 0; i < queue->max_allowed_buffers; ++i) {
struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
if (priv->cpu) {
@@ -184,22 +186,21 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
priv->cpu = NULL;
}
}
+ kfree(ctx->postproc.dec_q);
+ ctx->postproc.dec_q = NULL;
}
-int hantro_postproc_alloc(struct hantro_ctx *ctx)
+static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
{
- struct hantro_dev *vpu = ctx->dev;
- struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
- struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
- unsigned int num_buffers = cap_queue->num_buffers;
struct v4l2_pix_format_mplane pix_mp;
const struct hantro_fmt *fmt;
- unsigned int i, buf_size;
+ unsigned int buf_size;
/* this should always pick native format */
fmt = hantro_get_default_fmt(ctx, false, ctx->bit_depth);
if (!fmt)
- return -EINVAL;
+ return 0;
+
v4l2_fill_pixfmt_mp(&pix_mp, fmt->fourcc, ctx->src_fmt.width,
ctx->src_fmt.height);
@@ -214,23 +215,85 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
buf_size += hantro_hevc_mv_size(pix_mp.width,
pix_mp.height);
- for (i = 0; i < num_buffers; ++i) {
- struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
+ return buf_size;
+}
+
+static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_dev *vpu = ctx->dev;
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+
+ if (!buf_size)
+ return -EINVAL;
+
+ /*
+ * The buffers on this queue are meant as intermediate
+ * buffers for the decoder, so no mapping is needed.
+ */
+ priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
+ priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
+ GFP_KERNEL, priv->attrs);
+ if (!priv->cpu)
+ return -ENOMEM;
+ priv->size = buf_size;
+
+ return 0;
+}
+
+int hantro_postproc_init(struct hantro_ctx *ctx)
+{
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
+ unsigned int num_buffers = cap_queue->num_buffers;
+ unsigned int i;
+ int ret;
- /*
- * The buffers on this queue are meant as intermediate
- * buffers for the decoder, so no mapping is needed.
- */
- priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
- priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
- GFP_KERNEL, priv->attrs);
- if (!priv->cpu)
- return -ENOMEM;
- priv->size = buf_size;
+ if (!ctx->postproc.dec_q)
+ ctx->postproc.dec_q = kcalloc(cap_queue->max_allowed_buffers,
+ sizeof(*ctx->postproc.dec_q),
+ GFP_KERNEL);
+
+ if (!ctx->postproc.dec_q)
+ return -EINVAL;
+
+ for (i = 0; i < num_buffers; i++) {
+ ret = hantro_postproc_alloc(ctx, i);
+ if (ret)
+ return ret;
}
+
return 0;
}
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+ struct hantro_dev *vpu = ctx->dev;
+ int ret;
+
+ if (priv->size < buf_size && priv->cpu) {
+ /* buffer is too small, release it */
+ dma_free_attrs(vpu->dev, priv->size, priv->cpu,
+ priv->dma, priv->attrs);
+ priv->cpu = NULL;
+ }
+
+ if (!priv->cpu) {
+ /* buffer not already allocated, try getting a new one */
+ ret = hantro_postproc_alloc(ctx, index);
+ if (ret)
+ return 0;
+ }
+
+ if (!priv->cpu)
+ return 0;
+
+ return priv->dma;
+}
+
static void hantro_postproc_g1_disable(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 61cfaaf4e927..898e8763d63a 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -897,7 +897,7 @@ static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
}
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
- ret = hantro_postproc_alloc(ctx);
+ ret = hantro_postproc_init(ctx);
if (ret)
goto err_codec_exit;
}
--
2.39.2
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