mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-01 22:54:01 +00:00
Code Issues Releases Wiki Activity

remoteproc/omap: Report device exceptions and trigger recovery

Browse source 
The OMAP remote processors send a special mailbox message
(RP_MBOX_CRASH) when they crash and detect an internal device
exception.

Add support to the mailbox handling function upon detection of
this special message to report this crash to the remoteproc core.
The remoteproc core can trigger a recovery using the prevailing
recovery mechanism, already in use for MMU Fault recovery.

Co-developed-by: Subramaniam Chanderashekarapuram <subramaniam.ca@ti.com>
Signed-off-by: Subramaniam Chanderashekarapuram <subramaniam.ca@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Andrew F. Davis <afd@ti.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200324110035.29907-14-t-kristo@ti.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Suman Anna 2020-03-24 13:00:33 +02:00 committed by Bjorn Andersson
parent 5f31b232c6
commit 232ba6ca00
1 changed files with 5 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/remoteproc/omap_remoteproc.c
View file

@ -383,8 +383,12 @@ static void omap_rproc_mbox_callback(struct mbox_client *client, void *data)
switch (msg) {
case RP_MBOX_CRASH:
/* just log this for now. later, we'll also do recovery */
/*
* remoteproc detected an exception, notify the rproc core.
* The remoteproc core will handle the recovery.
*/
dev_err(dev, "omap rproc %s crashed\n", name);
rproc_report_crash(oproc->rproc, RPROC_FATAL_ERROR);
break;
case RP_MBOX_ECHO_REPLY:
dev_info(dev, "received echo reply from %s\n", name);