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authorSuman Anna <s-anna@ti.com>2020-03-24 14:00:33 +0300
committerBjorn Andersson <bjorn.andersson@linaro.org>2020-03-26 08:29:50 +0300
commit232ba6ca007c9585ea666ad083f510b9666259dd (patch)
tree52cf3c5f82f26b00e2c9027fb1089c77b2a17ae3 /drivers/remoteproc
parent5f31b232c67434199558fd236e7644b432636b76 (diff)
downloadlinux-232ba6ca007c9585ea666ad083f510b9666259dd.tar.xz
remoteproc/omap: Report device exceptions and trigger recovery
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>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/omap_remoteproc.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c
index b784f48e63d1..cee6c33869b3 100644
--- a/drivers/remoteproc/omap_remoteproc.c
+++ b/drivers/remoteproc/omap_remoteproc.c
@@ -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);