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linux-sg2042
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[media] s5p-mfc: Don't allocate codec buffers from pre-allocated region 

Further investigation revealed that codec buffers also don't need to
be allocated at higher addresses than firmware base for MFC v6+ hardware.
Those buffers can be quite large and its size depends on the selected
format and framesize. This patch changes the way the codec buffers are
allocated - driver will use generic allocator for them instead of the
pre-allocated buffer for firmware and contexts.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Marek Szyprowski 2017-03-22 07:34:28 -03:00 committed by Mauro Carvalho Chehab
parent a5cb00eb42
commit d251510d4c
3 changed files with 34 additions and 2 deletions
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28
drivers/media/platform/s5p-mfc/s5p_mfc_opr.c
View File

@ -79,6 +79,25 @@ no_mem:
return -ENOMEM;
}
int s5p_mfc_alloc_generic_buf(struct s5p_mfc_dev *dev, unsigned int mem_ctx,
struct s5p_mfc_priv_buf *b)
{
struct device *mem_dev = dev->mem_dev[mem_ctx];
mfc_debug(3, "Allocating generic buf: %zu\n", b->size);
b->ctx = mem_ctx;
b->virt = dma_alloc_coherent(mem_dev, b->size, &b->dma, GFP_KERNEL);
if (!b->virt)
goto no_mem;
mfc_debug(3, "Allocated addr %p %pad\n", b->virt, &b->dma);
return 0;
no_mem:
mfc_err("Allocating generic buffer of size %zu failed\n", b->size);
return -ENOMEM;
}
void s5p_mfc_release_priv_buf(struct s5p_mfc_dev *dev,
struct s5p_mfc_priv_buf *b)
{
@ -97,3 +116,12 @@ void s5p_mfc_release_priv_buf(struct s5p_mfc_dev *dev,
b->size = 0;
}
void s5p_mfc_release_generic_buf(struct s5p_mfc_dev *dev,
struct s5p_mfc_priv_buf *b)
{
struct device *mem_dev = dev->mem_dev[b->ctx];
dma_free_coherent(mem_dev, b->size, b->virt, b->dma);
b->virt = NULL;
b->dma = 0;
b->size = 0;
}

4
drivers/media/platform/s5p-mfc/s5p_mfc_opr.h
View File

@ -319,6 +319,10 @@ int s5p_mfc_alloc_priv_buf(struct s5p_mfc_dev *dev, unsigned int mem_ctx,
struct s5p_mfc_priv_buf *b);
void s5p_mfc_release_priv_buf(struct s5p_mfc_dev *dev,
struct s5p_mfc_priv_buf *b);
int s5p_mfc_alloc_generic_buf(struct s5p_mfc_dev *dev, unsigned int mem_ctx,
struct s5p_mfc_priv_buf *b);
void s5p_mfc_release_generic_buf(struct s5p_mfc_dev *dev,
struct s5p_mfc_priv_buf *b);
#endif /* S5P_MFC_OPR_H_ */

4
drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c
View File

@ -239,7 +239,7 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
/* Allocate only if memory from bank 1 is necessary */
if (ctx->bank1.size > 0) {
ret = s5p_mfc_alloc_priv_buf(dev, BANK_L_CTX, &ctx->bank1);
ret = s5p_mfc_alloc_generic_buf(dev, BANK_L_CTX, &ctx->bank1);
if (ret) {
mfc_err("Failed to allocate Bank1 memory\n");
return ret;
@ -252,7 +252,7 @@ static int s5p_mfc_alloc_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
/* Release buffers allocated for codec */
static void s5p_mfc_release_codec_buffers_v6(struct s5p_mfc_ctx *ctx)
{
s5p_mfc_release_priv_buf(ctx->dev, &ctx->bank1);
s5p_mfc_release_generic_buf(ctx->dev, &ctx->bank1);
}
/* Allocate memory for instance data buffer */