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ath10k: expose hw restart via debugfs 

Until now it was possible to simulate soft and
hard fw crashes but it wasn't possible to trigger
an immediately hw restart itself (without the fw
crash).

This can be useful when stress testing hw
restarting stability, e.g. during heavy tx/rx
traffic.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2014-10-28 10:34:37 +01:00 committed by Kalle Valo
parent 04ed9dfe49
commit 605cdba1c9
1 changed files with 6 additions and 1 deletions
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7
drivers/net/wireless/ath/ath10k/debug.c
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@ -695,7 +695,8 @@ static ssize_t ath10k_read_simulate_fw_crash(struct file *file,
"To simulate firmware crash write one of the keywords to this file:\n"
"`soft` - this will send WMI_FORCE_FW_HANG_ASSERT to firmware if FW supports that command.\n"
"`hard` - this will send to firmware command with illegal parameters causing firmware crash.\n"
"`assert` - this will send special illegal parameter to firmware to cause assert failure and crash.\n";
"`assert` - this will send special illegal parameter to firmware to cause assert failure and crash.\n"
"`hw-restart` - this will simply queue hw restart without fw/hw actually crashing.\n";
return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
}
@ -748,6 +749,10 @@ static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
} else if (!strcmp(buf, "assert")) {
ath10k_info(ar, "simulating firmware assert crash\n");
ret = ath10k_debug_fw_assert(ar);
} else if (!strcmp(buf, "hw-restart")) {
ath10k_info(ar, "user requested hw restart\n");
queue_work(ar->workqueue, &ar->restart_work);
ret = 0;
} else {
ret = -EINVAL;
goto exit;