AA: mac80211: backport package from trunk r39886

[12.09/openwrt.git] / package / mac80211 / patches / 542-ath9k_debugfs_diag.patch

diff --git a/package/mac80211/patches/542-ath9k_debugfs_diag.patch b/package/mac80211/patches/542-ath9k_debugfs_diag.patch
new file mode 100644 (file)
index 0000000..e1b6ff1
--- /dev/null
+++ b/package/mac80211/patches/542-ath9k_debugfs_diag.patch
@@ -0,0 +1,139 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -1629,6 +1629,50 @@ 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);
+@@ -1656,6 +1700,8 @@ 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
+@@ -482,6 +482,12 @@ 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;
+@@ -762,6 +768,8 @@ struct ath_hw {
+       u32 rfkill_polarity;
+       u32 ah_flags;
+ 
++      unsigned long diag;
++
+       bool reset_power_on;
+       bool htc_reset_init;
+ 
+@@ -1013,6 +1021,7 @@ void ath9k_hw_check_nav(struct ath_hw *a
+ 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);
+ 
+ /* Generic hw timer primitives */
+ struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1735,6 +1735,20 @@ 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)
+ {
+@@ -1940,6 +1954,7 @@ int ath9k_hw_reset(struct ath_hw *ah, st
+               ar9003_hw_disable_phy_restart(ah);
+ 
+       ath9k_hw_apply_gpio_override(ah);
++      ath9k_hw_update_diag(ah);
+ 
+       if (AR_SREV_9565(ah) && common->bt_ant_diversity)
+               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
+@@ -602,6 +602,11 @@ irqreturn_t ath_isr(int irq, void *dev)
+       ath9k_debug_sync_cause(sc, sync_cause);
+       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).