diff options
| author | Craig Dooley <dooleyc@google.com> | 2022-03-04 01:35:23 +0000 |
|---|---|---|
| committer | yixuanjiang <yixuanjiang@google.com> | 2022-05-24 13:10:59 +0800 |
| commit | 2dcebe0fda48ca1da24b5e8b499583ce163922a8 (patch) | |
| tree | 18eda7022da665e822ef6dde6127b543563f0a7d | |
| parent | d84a0d8dfeea9c87169ed474b1a8382ef7f2895e (diff) | |
| download | aoc-2dcebe0fda48ca1da24b5e8b499583ce163922a8.tar.gz | |
Send a "crash" mailbox message to AoC during AP restart
Bug: 222458256
Signed-off-by: Craig Dooley <dooleyc@google.com>
Change-Id: I4db45a9f97dfb916b1fe9c5724b01ac3fed175cd
| -rw-r--r-- | aoc.c | 19 |
1 files changed, 17 insertions, 2 deletions
@@ -187,6 +187,7 @@ struct sscd_info { u16 seg_count; }; +static void trigger_aoc_ramdump(struct aoc_prvdata *prvdata); static void sscd_release(struct device *dev); static struct sscd_info sscd_info; @@ -1903,6 +1904,16 @@ static struct aoc_service_dev *create_service_device(struct aoc_prvdata *prvdata return dev; } +static void trigger_aoc_ramdump(struct aoc_prvdata *prvdata) +{ + struct mbox_chan *channel = prvdata->mbox_channels[15].channel; + static const uint32_t command[] = { 0, 0, 0, 0, 0x0deada0c, 0, 0, 0 }; + + dev_notice(prvdata->dev, "Attempting to force AoC coredump\n"); + + mbox_send_message(channel, (void *)&command); +} + static void signal_aoc(struct mbox_chan *channel) { #ifdef AOC_JUNO @@ -2396,11 +2407,16 @@ static void aoc_watchdog(struct work_struct *work) goto err_coredump; } + /* If this was a true watchdog timeout, the AoC may still be running, so + * the coredump will not be written. Attempt to force a coredump by sending + * a death message to the AoC to trigger a failure. + */ + trigger_aoc_ramdump(prvdata); + if (prvdata->ap_triggered_reset) { prvdata->ap_triggered_reset = false; snprintf(crash_info, RAMDUMP_SECTION_CRASH_INFO_SIZE - 1, "AP Triggered Reset: %s", prvdata->ap_reset_reason); - goto coredump_submit; } ramdump_timeout = jiffies + (5 * HZ); @@ -2460,7 +2476,6 @@ static void aoc_watchdog(struct work_struct *work) sscd_info.segs[0].vaddr = (void *)carveout_vaddr_from_aoc; sscd_info.seg_count = 1; -coredump_submit: /* * sscd_report() returns -EAGAIN if there are no readers to consume a * coredump. Retry sscd_report() with a sleep to handle the race condition |