From: Tero Kristo <t-kristo@ti.com>
To: <bjorn.andersson@linaro.org>, <ohad@wizery.com>,
<linux-remoteproc@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <mathieu.poirier@linaro.org>,
<linux-omap@vger.kernel.org>, <s-anna@ti.com>,
Tero Kristo <t-kristo@ti.com>
Subject: [PATCHv4 09/14] remoteproc/omap: Check for undefined mailbox messages
Date: Thu, 2 Jan 2020 15:18:40 +0200 [thread overview]
Message-ID: <20200102131845.12992-10-t-kristo@ti.com> (raw)
In-Reply-To: <20200102131845.12992-1-t-kristo@ti.com>
From: Suman Anna <s-anna@ti.com>
Add some checks in the mailbox callback function to limit
any processing in the mailbox callback function to only
certain currently valid messages, and drop all the remaining
messages. A debug message is added to print any such invalid
messages when the appropriate trace control is enabled.
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>
---
drivers/remoteproc/omap_remoteproc.c | 6 ++++++
drivers/remoteproc/omap_remoteproc.h | 7 +++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c
index 9140c528c416..ebf979e71dfd 100644
--- a/drivers/remoteproc/omap_remoteproc.c
+++ b/drivers/remoteproc/omap_remoteproc.c
@@ -130,6 +130,12 @@ static void omap_rproc_mbox_callback(struct mbox_client *client, void *data)
dev_info(dev, "received echo reply from %s\n", name);
break;
default:
+ if (msg >= RP_MBOX_READY && msg < RP_MBOX_END_MSG)
+ return;
+ if (msg > oproc->rproc->max_notifyid) {
+ dev_dbg(dev, "dropping unknown message 0x%x", msg);
+ return;
+ }
/* msg contains the index of the triggered vring */
if (rproc_vq_interrupt(oproc->rproc, msg) == IRQ_NONE)
dev_dbg(dev, "no message was found in vqid %d\n", msg);
diff --git a/drivers/remoteproc/omap_remoteproc.h b/drivers/remoteproc/omap_remoteproc.h
index f6d2036d383d..72f656c93caa 100644
--- a/drivers/remoteproc/omap_remoteproc.h
+++ b/drivers/remoteproc/omap_remoteproc.h
@@ -56,6 +56,12 @@
*
* @RP_MBOX_ABORT_REQUEST: a "please crash" request, used for testing the
* recovery mechanism (to some extent).
+ *
+ * Introduce new message definitions if any here.
+ *
+ * @RP_MBOX_END_MSG: Indicates end of known/defined messages from remote core
+ * This should be the last definition.
+ *
*/
enum omap_rp_mbox_messages {
RP_MBOX_READY = 0xFFFFFF00,
@@ -64,6 +70,7 @@ enum omap_rp_mbox_messages {
RP_MBOX_ECHO_REQUEST = 0xFFFFFF03,
RP_MBOX_ECHO_REPLY = 0xFFFFFF04,
RP_MBOX_ABORT_REQUEST = 0xFFFFFF05,
+ RP_MBOX_END_MSG = 0xFFFFFF06,
};
#endif /* _OMAP_RPMSG_H */
--
2.17.1
--
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next prev parent reply other threads:[~2020-01-02 13:19 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-02 13:18 [PATCHv4 00/14] remoteproc: updates for omap remoteproc support Tero Kristo
2020-01-02 13:18 ` [PATCHv4 01/14] dt-bindings: remoteproc: Add OMAP remoteproc bindings Tero Kristo
2020-01-02 13:25 ` [RESEND PATCHv4 " Tero Kristo
2020-01-03 23:38 ` Rob Herring
2020-01-07 11:01 ` Tero Kristo
2020-01-07 15:48 ` Rob Herring
2020-01-08 16:49 ` Suman Anna
2020-01-16 7:51 ` Tero Kristo
2020-01-16 14:00 ` Tero Kristo
2020-01-02 13:26 ` [PATCHv4 " Tero Kristo
2020-01-02 13:18 ` [PATCHv4 02/14] remoteproc/omap: Add device tree support Tero Kristo
2020-01-08 17:55 ` Suman Anna
2020-01-09 8:53 ` Tero Kristo
2020-01-02 13:18 ` [PATCHv4 03/14] remoteproc/omap: Add a sanity check for DSP boot address alignment Tero Kristo
2020-01-02 13:18 ` [PATCHv4 04/14] remoteproc/omap: Add support to parse internal memories from DT Tero Kristo
2020-01-08 18:05 ` Suman Anna
2020-01-09 9:12 ` Tero Kristo
2020-01-09 17:19 ` Suman Anna
2020-01-02 13:18 ` [PATCHv4 05/14] remoteproc/omap: Add the rproc ops .da_to_va() implementation Tero Kristo
2020-01-02 13:18 ` [PATCHv4 06/14] remoteproc/omap: Initialize and assign reserved memory node Tero Kristo
2020-01-07 13:37 ` Andrew F. Davis
2020-01-07 14:25 ` Tero Kristo
2020-01-07 14:37 ` Andrew F. Davis
2020-01-08 17:22 ` Suman Anna
2020-01-02 13:18 ` [PATCHv4 07/14] remoteproc/omap: Add support for DRA7xx remote processors Tero Kristo
2020-01-08 19:39 ` Suman Anna
2020-01-15 12:34 ` Tero Kristo
2020-01-02 13:18 ` [PATCHv4 08/14] remoteproc/omap: remove the platform_data header Tero Kristo
2020-01-08 19:44 ` Suman Anna
2020-01-15 12:58 ` Tero Kristo
2020-01-02 13:18 ` Tero Kristo [this message]
2020-01-02 13:18 ` [PATCHv4 10/14] remoteproc/omap: Request a timer(s) for remoteproc usage Tero Kristo
2020-01-08 21:30 ` Suman Anna
2020-01-02 13:18 ` [PATCHv4 11/14] remoteproc/omap: add support for system suspend/resume Tero Kristo
2020-01-08 19:57 ` Suman Anna
2020-01-08 21:42 ` Suman Anna
2020-01-15 13:20 ` Tero Kristo
2020-01-02 13:18 ` [PATCHv4 12/14] remoteproc/omap: add support for runtime auto-suspend/resume Tero Kristo
2020-01-02 13:18 ` [PATCHv4 13/14] remoteproc/omap: report device exceptions and trigger recovery Tero Kristo
2020-01-02 13:18 ` [PATCHv4 14/14] remoteproc/omap: add watchdog functionality for remote processors Tero Kristo
2020-01-08 20:11 ` Suman Anna
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