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|
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1892,6 +1892,50 @@ static const struct file_operations fops
#endif
+static ssize_t read_file_diag(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_hw *ah = sc->sc_ah;
+ char buf[32];
+ unsigned int len;
+
+ len = sprintf(buf, "0x%08lx\n", ah->diag);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_diag(struct file *file, const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_hw *ah = sc->sc_ah;
+ unsigned long diag;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EFAULT;
+
+ buf[len] = '\0';
+ if (kstrtoul(buf, 0, &diag))
+ return -EINVAL;
+
+ ah->diag = diag;
+ ath9k_hw_update_diag(ah);
+
+ return count;
+}
+
+static const struct file_operations fops_diag = {
+ .read = read_file_diag,
+ .write = write_file_diag,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
+
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
@@ -1917,6 +1961,8 @@ int ath9k_init_debug(struct ath_hw *ah)
debugfs_create_file("gpio_led", S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_gpio_led);
#endif
+ debugfs_create_file("diag", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+ sc, &fops_diag);
debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_dma);
debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -500,6 +500,12 @@ enum {
ATH9K_RESET_COLD,
};
+enum {
+ ATH_DIAG_DISABLE_RX,
+ ATH_DIAG_DISABLE_TX,
+ ATH_DIAG_TRIGGER_ERROR,
+};
+
struct ath9k_hw_version {
u32 magic;
u16 devid;
@@ -778,6 +784,8 @@ struct ath_hw {
u32 rfkill_polarity;
u32 ah_flags;
+ unsigned long diag;
+
bool reset_power_on;
bool htc_reset_init;
@@ -1028,6 +1036,7 @@ void ath9k_hw_set_sta_beacon_timers(stru
bool ath9k_hw_check_alive(struct ath_hw *ah);
bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode);
+void ath9k_hw_update_diag(struct ath_hw *ah);
#ifdef CPTCFG_ATH9K_DEBUGFS
void ath9k_debug_sync_cause(struct ath_common *common, u32 sync_cause);
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1854,6 +1854,20 @@ fail:
return -EINVAL;
}
+void ath9k_hw_update_diag(struct ath_hw *ah)
+{
+ if (test_bit(ATH_DIAG_DISABLE_RX, &ah->diag))
+ REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
+ else
+ REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
+
+ if (test_bit(ATH_DIAG_DISABLE_TX, &ah->diag))
+ REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_LOOP_BACK);
+ else
+ REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_LOOP_BACK);
+}
+EXPORT_SYMBOL(ath9k_hw_update_diag);
+
int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
struct ath9k_hw_cal_data *caldata, bool fastcc)
{
@@ -2056,6 +2070,7 @@ int ath9k_hw_reset(struct ath_hw *ah, st
}
ath9k_hw_apply_gpio_override(ah);
+ ath9k_hw_update_diag(ah);
if (AR_SREV_9565(ah) && ah->shared_chain_lnadiv)
REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -462,6 +462,11 @@ irqreturn_t ath_isr(int irq, void *dev)
ath9k_hw_getisr(ah, &status); /* NB: clears ISR too */
status &= ah->imask; /* discard unasked-for bits */
+ if (test_bit(ATH_DIAG_TRIGGER_ERROR, &ah->diag)) {
+ status |= ATH9K_INT_FATAL;
+ clear_bit(ATH_DIAG_TRIGGER_ERROR, &ah->diag);
+ }
+
/*
* If there are no status bits set, then this interrupt was not
* for me (should have been caught above).
|
