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remoteproc: qcom: q6v5-mss: Add custom dump function for modem

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The per segment dump function is responsible for loading the mba
before device memory segments associated with coredump can be populated
and for cleaning up the resources post coredump.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Sibi Sankar 2018-10-17 19:25:26 +05:30 committed by Bjorn Andersson
parent 0304530ddd
commit 7dd8ade24d
1 changed files with 33 additions and 0 deletions
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33
drivers/remoteproc/qcom_q6v5_mss.c
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@ -168,6 +168,9 @@ struct q6v5 {
bool running;
bool dump_mba_loaded;
unsigned long dump_segment_mask;
unsigned long dump_complete_mask;
phys_addr_t mba_phys;
void *mba_region;
size_t mba_size;
@ -961,6 +964,33 @@ release_firmware:
return ret < 0 ? ret : 0;
}
static void qcom_q6v5_dump_segment(struct rproc *rproc,
struct rproc_dump_segment *segment,
void *dest)
{
int ret = 0;
struct q6v5 *qproc = rproc->priv;
unsigned long mask = BIT((unsigned long)segment->priv);
void *ptr = rproc_da_to_va(rproc, segment->da, segment->size);
/* Unlock mba before copying segments */
if (!qproc->dump_mba_loaded)
ret = q6v5_mba_load(qproc);
if (!ptr || ret)
memset(dest, 0xff, segment->size);
else
memcpy(dest, ptr, segment->size);
qproc->dump_segment_mask |= mask;
/* Reclaim mba after copying segments */
if (qproc->dump_segment_mask == qproc->dump_complete_mask) {
if (qproc->dump_mba_loaded)
q6v5_mba_reclaim(qproc);
}
}
static int q6v5_start(struct rproc *rproc)
{
struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
@ -989,6 +1019,9 @@ static int q6v5_start(struct rproc *rproc)
if (xfermemop_ret)
dev_err(qproc->dev,
"Failed to reclaim mba buffer system may become unstable\n");
/* Reset Dump Segment Mask */
qproc->dump_segment_mask = 0;
qproc->running = true;
return 0;