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ath10k: add firmware crash counters

Browse Source 
Add three counters related to firmware crashes or resets.

Usage:

# cat /sys/kernel/debug/ieee80211/phy0/ath10k/fw_reset_stats
fw_crash_counter                2
fw_warm_reset_counter           43
fw_cold_reset_counter           0
#

kvalo: split into it's own patch, add debugfs file and add locking

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Ben Greear 2014-09-29 14:41:46 +03:00 committed by Kalle Valo
parent 5326849a86
commit f51dbe7374
3 changed files with 65 additions and 0 deletions
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7
drivers/net/wireless/ath/ath10k/core.h
View File

@ -563,6 +563,13 @@ struct ath10k {
bool utf_monitor;
} testmode;
struct {
/* protected by data_lock */
u32 fw_crash_counter;
u32 fw_warm_reset_counter;
u32 fw_cold_reset_counter;
} stats;
/* must be last */
u8 drv_priv[0] __aligned(sizeof(void *));
};

44
drivers/net/wireless/ath/ath10k/debug.c
View File

@ -625,6 +625,47 @@ static const struct file_operations fops_fw_stats = {
.llseek = default_llseek,
};
static ssize_t ath10k_debug_fw_reset_stats_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
int ret, len, buf_len;
char *buf;
buf_len = 500;
buf = kmalloc(buf_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
spin_lock_bh(&ar->data_lock);
len = 0;
len += scnprintf(buf + len, buf_len - len,
"fw_crash_counter\t\t%d\n", ar->stats.fw_crash_counter);
len += scnprintf(buf + len, buf_len - len,
"fw_warm_reset_counter\t\t%d\n",
ar->stats.fw_warm_reset_counter);
len += scnprintf(buf + len, buf_len - len,
"fw_cold_reset_counter\t\t%d\n",
ar->stats.fw_cold_reset_counter);
spin_unlock_bh(&ar->data_lock);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return ret;
}
static const struct file_operations fops_fw_reset_stats = {
.open = simple_open,
.read = ath10k_debug_fw_reset_stats_read,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
/* This is a clean assert crash in firmware. */
static int ath10k_debug_fw_assert(struct ath10k *ar)
{
@ -1331,6 +1372,9 @@ int ath10k_debug_register(struct ath10k *ar)
debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
&fops_fw_stats);
debugfs_create_file("fw_reset_stats", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_fw_reset_stats);
debugfs_create_file("wmi_services", S_IRUSR, ar->debug.debugfs_phy, ar,
&fops_wmi_services);

14
drivers/net/wireless/ath/ath10k/pci.c
View File

@ -1006,6 +1006,8 @@ static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
spin_lock_bh(&ar->data_lock);
ar->stats.fw_crash_counter++;
crash_data = ath10k_debug_get_new_fw_crash_data(ar);
if (crash_data)
@ -1692,6 +1694,12 @@ static int ath10k_pci_warm_reset(struct ath10k *ar)
ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot warm reset\n");
spin_lock_bh(&ar->data_lock);
ar->stats.fw_warm_reset_counter++;
spin_unlock_bh(&ar->data_lock);
/* debug */
val = ath10k_pci_read32(ar, SOC_CORE_BASE_ADDRESS +
PCIE_INTR_CAUSE_ADDRESS);
@ -2308,6 +2316,12 @@ static int ath10k_pci_cold_reset(struct ath10k *ar)
ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot cold reset\n");
spin_lock_bh(&ar->data_lock);
ar->stats.fw_cold_reset_counter++;
spin_unlock_bh(&ar->data_lock);
/* Put Target, including PCIe, into RESET. */
val = ath10k_pci_reg_read32(ar, SOC_GLOBAL_RESET_ADDRESS);
val |= 1;