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msm: eva: Save buffer mappings of last frame

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Help debugging SMMU fault.

Change-Id: I93f041b9c117f1cce0d4a8ad9f723d9d31b02010
Signed-off-by: George Shen <quic_sqiao@quicinc.com>
This commit is contained in:
George Shen
2023-03-19 21:40:01 -07:00
parent db7c8ad719
commit 5d31120817
3 changed files with 31 additions and 0 deletions
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24
msm/eva/msm_cvp_buf.c
View File

@@ -1449,6 +1449,24 @@ static void msm_cvp_unmap_frame_buf(struct msm_cvp_inst *inst,
cvp_kmem_cache_free(&cvp_driver->frame_cache, frame);
}
static void backup_frame_buffers(struct msm_cvp_inst *inst,
struct msm_cvp_frame *frame)
{
/* Save frame buffers before unmap them */
int i = frame->nr;
if (i == 0 || i > MAX_FRAME_BUFFER_NUMS)
return;
inst->last_frame.ktid = frame->ktid;
inst->last_frame.nr = frame->nr;
do {
i--;
inst->last_frame.smem[i] = *(frame->bufs[i].smem);
} while (i);
}
void msm_cvp_unmap_frame(struct msm_cvp_inst *inst, u64 ktid)
{
struct msm_cvp_frame *frame, *dummy1;
@@ -1480,6 +1498,8 @@ void msm_cvp_unmap_frame(struct msm_cvp_inst *inst, u64 ktid)
__func__, frame->pkt_type,
hash32_ptr(inst->session),
frame->ktid);
/* Save the previous frame mappings for debug */
backup_frame_buffers(inst, frame);
msm_cvp_unmap_frame_buf(inst, frame);
}
else
@@ -1788,6 +1808,10 @@ void msm_cvp_print_inst_bufs(struct msm_cvp_inst *inst, bool log)
list_for_each_entry(buf, &inst->persistbufs.list, list)
_log_buf(snap, SMEM_PERSIST, inst, buf, log);
mutex_unlock(&inst->persistbufs.lock);
dprintk(CVP_ERR, "last frame ktid %llx\n", inst->last_frame.ktid);
for (i = 0; i < inst->last_frame.nr; i++)
_log_smem(snap, inst, &inst->last_frame.smem[i], log);
}
struct cvp_internal_buf *cvp_allocate_arp_bufs(struct msm_cvp_inst *inst,

6
msm/eva/msm_cvp_buf.h
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@@ -140,6 +140,12 @@ struct msm_cvp_frame {
u32 pkt_type;
};
struct cvp_frame_bufs {
u64 ktid;
u32 nr;
struct msm_cvp_smem smem[MAX_FRAME_BUFFER_NUMS];
};
void print_cvp_buffer(u32 tag, const char *str,
struct msm_cvp_inst *inst,
struct cvp_internal_buf *cbuf);

1
msm/eva/msm_cvp_internal.h
View File

@@ -385,6 +385,7 @@ struct msm_cvp_inst {
struct msm_cvp_list cvpdspbufs;
struct msm_cvp_list cvpwnccbufs;
struct msm_cvp_list frames;
struct cvp_frame_bufs last_frame;
u32 cvpwnccbufs_num;
struct msm_cvp_wncc_buffer* cvpwnccbufs_table;
struct completion completions[SESSION_MSG_END - SESSION_MSG_START + 1];