On 11/8/22 11:02 AM, Ryder Lee wrote:
Trigger firmware crash and enable full system recovery through debugfs.
This also renames knob "fw_ser" to a clear-cut name "sys_recovery".
Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
---
.../wireless/mediatek/mt76/mt7915/debugfs.c | 51 +++++++++++++++----
.../net/wireless/mediatek/mt76/mt7915/mac.c | 5 ++
.../net/wireless/mediatek/mt76/mt7915/mcu.h | 2 +
.../wireless/mediatek/mt76/mt7915/mt7915.h | 2 +
.../net/wireless/mediatek/mt76/mt7915/regs.h | 4 ++
5 files changed, 55 insertions(+), 9 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
index e1d15394a621..56320c5da499 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
@@ -46,8 +46,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(fops_implicit_txbf, mt7915_implicit_txbf_get,
/* test knob of system error recovery */
static ssize_t
-mt7915_fw_ser_set(struct file *file, const char __user *user_buf,
- size_t count, loff_t *ppos)
+mt7915_sys_recovery_set(struct file *file, const char __user *user_buf,
+ size_t count, loff_t *ppos)
{
struct mt7915_phy *phy = file->private_data;
struct mt7915_dev *dev = phy->dev;
@@ -71,8 +71,18 @@ mt7915_fw_ser_set(struct file *file, const char __user *user_buf,
return -EINVAL;
switch (val) {
+ /*
+ * 0: grab firmware current SER state.
+ * 1: trigger & enable system error L1 recovery.
+ * 2: trigger & enable system error L2 recovery.
+ * 3: trigger & enable system error L3 rx abort.
+ * 4: trigger & enable system error L3 tx abort
+ * 5: trigger & enable system error L3 tx disable.
+ * 6: trigger & enable system error L3 bf recovery.
+ * 7: trigger & enable system error full recovery.
+ * 8: trigger firmware crash.
+ */
[snip]
+ /* dump firmware SER statistics */
desc += scnprintf(buff + desc, bufsz - desc,
"::E R , SER_STATUS = 0x%08x\n",
mt76_rr(dev, MT_SWDEF_SER_STATS));
@@ -139,15 +167,19 @@ mt7915_fw_ser_get(struct file *file, char __user *user_buf,
desc += scnprintf(buff + desc, bufsz - desc,
"::E R , SER_LMAC_WISR7_B1 = 0x%08x\n",
mt76_rr(dev, MT_SWDEF_LAMC_WISR7_BN1_STATS));
+ desc += scnprintf(buff + desc, bufsz - desc,
+ "\nSYS_RESET_COUNT: WM %d, WA %d\n",
+ dev->recovery.wm_reset_count,
+ dev->recovery.wa_reset_count);
Consider printing out the text for what the various values that can be written to this
debugfs file do (ie, like the comments earlier in this patch)?
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
