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remoteproc: qcom_q6v5_mss: Reload the mba region on coredump 

commit d96f2571dc84d128cacf1944f4ecc87834c779a6 upstream.

On secure devices after a wdog/fatal interrupt, the mba region has to be
refreshed in order to prevent the following errors during mba load.

Err Logs:
remoteproc remoteproc2: stopped remote processor 4080000.remoteproc
qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232
qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232
....
qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232
qcom-q6v5-mss 4080000.remoteproc: MBA booted, loading mpss

Fixes: 7dd8ade24d ("remoteproc: qcom: q6v5-mss: Add custom dump function for modem")
Cc: stable@vger.kernel.org
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200304194729.27979-4-sibis@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sibi Sankar 2020-03-05 01:17:29 +05:30 committed by Greg Kroah-Hartman
parent 241f681d19
commit 5b677eddc5
1 changed files with 18 additions and 1 deletions
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19
drivers/remoteproc/qcom_q6v5_mss.c
View File

@ -904,6 +904,23 @@ static void q6v5_mba_reclaim(struct q6v5 *qproc)
}
}
static int q6v5_reload_mba(struct rproc *rproc)
{
struct q6v5 *qproc = rproc->priv;
const struct firmware *fw;
int ret;
ret = request_firmware(&fw, rproc->firmware, qproc->dev);
if (ret < 0)
return ret;
q6v5_load(rproc, fw);
ret = q6v5_mba_load(qproc);
release_firmware(fw);
return ret;
}
static int q6v5_mpss_load(struct q6v5 *qproc)
{
const struct elf32_phdr *phdrs;
@ -1062,7 +1079,7 @@ static void qcom_q6v5_dump_segment(struct rproc *rproc,
/* Unlock mba before copying segments */
if (!qproc->dump_mba_loaded) {
ret = q6v5_mba_load(qproc);
ret = q6v5_reload_mba(rproc);
if (!ret) {
/* Reset ownership back to Linux to copy segments */
ret = q6v5_xfer_mem_ownership(qproc, &qproc->mpss_perm,