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mem-buf: Add accessor for mem_buf_desc sgl list

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Allow clients to see what IPA address a mem_buf object is
mapped to.

Change-Id: Ib3d47cb78bf7b1b217950e1e59b8d542abb3a331
Signed-off-by: Patrick Daly <quic_pdaly@quicinc.com>
This commit is contained in:
Patrick Daly 2022-05-09 10:34:11 -07:00 committed by Chris Goldsworthy
parent 2ac7e03c0b
commit 8145bbae35
2 changed files with 13 additions and 0 deletions
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8
drivers/soc/qcom/mem_buf/mem-buf-gh.c
View File

@ -1145,6 +1145,14 @@ static int get_mem_buf(void *membuf_desc)
return 0;
}
struct gh_sgl_desc *mem_buf_get_sgl(void *__membuf)
{
struct mem_buf_desc *membuf = __membuf;
return membuf->sgl_desc;
}
EXPORT_SYMBOL(mem_buf_get_sgl);
static void mem_buf_retrieve_release(struct qcom_sg_buffer *buffer)
{
sg_free_table(&buffer->sg_table);

5
include/linux/mem-buf.h
View File

@ -104,6 +104,7 @@ void mem_buf_put(void *membuf_desc);
void *mem_buf_get(int fd);
struct gh_sgl_desc *mem_buf_get_sgl(void *membuf);
#else
static inline int mem_buf_get_fd(void *membuf_desc)
@ -120,5 +121,9 @@ static inline void *mem_buf_get(int fd)
return ERR_PTR(-ENODEV);
}
static inline struct gh_sgl_desc *mem_buf_get_sgl(void *membuf)
{
return ERR_PTR(-EINVAL);
}
#endif /* CONFIG_QCOM_MEM_BUF */
#endif /* _MEM_BUF_H */