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 <[email protected]> --- drivers/remoteproc/qcom_q6v5_mss.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index c475af65ba1d..85db95bfd355 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -182,6 +182,7 @@ struct q6v5 { struct qcom_sysmon *sysmon; bool need_mem_protection; bool has_alt_reset; + unsigned long dump_segment_cnt; int mpss_perm; int mba_perm; int version; @@ -932,6 +933,30 @@ static int q6v5_mpss_load(struct q6v5 *qproc) 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 dump_cnt = (unsigned long)segment->priv; + void *ptr = rproc_da_to_va(rproc, segment->da, segment->size); + + /* Unlock mba before copying segments */ + if (!dump_cnt) + ret = q6v5_mba_load(qproc); + + if (!ptr || ret) + memset(dest, 0xff, segment->size); + else + memcpy(dest, ptr, segment->size); + + dump_cnt++; + /* Reclaim mba after copying segments */ + if (dump_cnt == qproc->dump_segment_cnt) + q6v5_mba_reclaim(qproc); +} + static int q6v5_start(struct rproc *rproc) { struct q6v5 *qproc = (struct q6v5 *)rproc->priv; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
