1 files changed, 233 insertions, 64 deletions

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 081e0085ed4c..29898f8d1893 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -78,6 +78,90 @@ static const struct file_operations fops_debug = {
 
 #define DMA_BUF_LEN 1024
 
+static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
+                             size_t count, loff_t *ppos)
+{
+        struct ath_softc *sc = file->private_data;
+        struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+        char buf[32];
+        unsigned int len;
+
+        len = snprintf(buf, sizeof(buf), "0x%08x\n", common->tx_chainmask);
+        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
+                             size_t count, loff_t *ppos)
+{
+        struct ath_softc *sc = file->private_data;
+        struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+        unsigned long mask;
+        char buf[32];
+        ssize_t len;
+
+        len = min(count, sizeof(buf) - 1);
+        if (copy_from_user(buf, user_buf, len))
+                return -EINVAL;
+
+        buf[len] = '\0';
+        if (strict_strtoul(buf, 0, &mask))
+                return -EINVAL;
+
+        common->tx_chainmask = mask;
+        sc->sc_ah->caps.tx_chainmask = mask;
+        return count;
+}
+
+static const struct file_operations fops_tx_chainmask = {
+        .read = read_file_tx_chainmask,
+        .write = write_file_tx_chainmask,
+        .open = ath9k_debugfs_open,
+        .owner = THIS_MODULE
+};
+
+
+static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
+                             size_t count, loff_t *ppos)
+{
+        struct ath_softc *sc = file->private_data;
+        struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+        char buf[32];
+        unsigned int len;
+
+        len = snprintf(buf, sizeof(buf), "0x%08x\n", common->rx_chainmask);
+        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
+                             size_t count, loff_t *ppos)
+{
+        struct ath_softc *sc = file->private_data;
+        struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+        unsigned long mask;
+        char buf[32];
+        ssize_t len;
+
+        len = min(count, sizeof(buf) - 1);
+        if (copy_from_user(buf, user_buf, len))
+                return -EINVAL;
+
+        buf[len] = '\0';
+        if (strict_strtoul(buf, 0, &mask))
+                return -EINVAL;
+
+        common->rx_chainmask = mask;
+        sc->sc_ah->caps.rx_chainmask = mask;
+        return count;
+}
+
+static const struct file_operations fops_rx_chainmask = {
+        .read = read_file_rx_chainmask,
+        .write = write_file_rx_chainmask,
+        .open = ath9k_debugfs_open,
+        .owner = THIS_MODULE
+};
+
+
 static ssize_t read_file_dma(struct file *file, char __user *user_buf,
                              size_t count, loff_t *ppos)
 {
@@ -157,10 +241,10 @@ static ssize_t read_file_dma(struct file *file, char __user *user_buf,
                 "txfifo_dcu_num_0:   %2d    txfifo_dcu_num_1:       %2d\n",
                 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
 
-        len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x \n",
+        len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n",
                         REG_READ_D(ah, AR_OBS_BUS_1));
         len += snprintf(buf + len, DMA_BUF_LEN - len,
-                        "AR_CR: 0x%x \n", REG_READ_D(ah, AR_CR));
+                        "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
 
         ath9k_ps_restore(sc);
 
@@ -180,8 +264,15 @@ void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
 {
         if (status)
                 sc->debug.stats.istats.total++;
-        if (status & ATH9K_INT_RX)
-                sc->debug.stats.istats.rxok++;
+        if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
+                if (status & ATH9K_INT_RXLP)
+                        sc->debug.stats.istats.rxlp++;
+                if (status & ATH9K_INT_RXHP)
+                        sc->debug.stats.istats.rxhp++;
+        } else {
+                if (status & ATH9K_INT_RX)
+                        sc->debug.stats.istats.rxok++;
+        }
         if (status & ATH9K_INT_RXEOL)
                 sc->debug.stats.istats.rxeol++;
         if (status & ATH9K_INT_RXORN)
@@ -223,8 +314,15 @@ static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
         char buf[512];
         unsigned int len = 0;
 
-        len += snprintf(buf + len, sizeof(buf) - len,
-                "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
+        if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
+                len += snprintf(buf + len, sizeof(buf) - len,
+                        "%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp);
+                len += snprintf(buf + len, sizeof(buf) - len,
+                        "%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp);
+        } else {
+                len += snprintf(buf + len, sizeof(buf) - len,
+                        "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
+        }
         len += snprintf(buf + len, sizeof(buf) - len,
                 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol);
         len += snprintf(buf + len, sizeof(buf) - len,
@@ -557,10 +655,8 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
 }
 
 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
-                       struct ath_buf *bf)
+                       struct ath_buf *bf, struct ath_tx_status *ts)
 {
-        struct ath_desc *ds = bf->bf_desc;
-
         if (bf_isampdu(bf)) {
                 if (bf_isxretried(bf))
                         TX_STAT_INC(txq->axq_qnum, a_xretries);
@@ -570,17 +666,17 @@ void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
                 TX_STAT_INC(txq->axq_qnum, completed);
         }
 
-        if (ds->ds_txstat.ts_status & ATH9K_TXERR_FIFO)
+        if (ts->ts_status & ATH9K_TXERR_FIFO)
                 TX_STAT_INC(txq->axq_qnum, fifo_underrun);
-        if (ds->ds_txstat.ts_status & ATH9K_TXERR_XTXOP)
+        if (ts->ts_status & ATH9K_TXERR_XTXOP)
                 TX_STAT_INC(txq->axq_qnum, xtxop);
-        if (ds->ds_txstat.ts_status & ATH9K_TXERR_TIMER_EXPIRED)
+        if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
                 TX_STAT_INC(txq->axq_qnum, timer_exp);
-        if (ds->ds_txstat.ts_flags & ATH9K_TX_DESC_CFG_ERR)
+        if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
                 TX_STAT_INC(txq->axq_qnum, desc_cfg_err);
-        if (ds->ds_txstat.ts_flags & ATH9K_TX_DATA_UNDERRUN)
+        if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
                 TX_STAT_INC(txq->axq_qnum, data_underrun);
-        if (ds->ds_txstat.ts_flags & ATH9K_TX_DELIM_UNDERRUN)
+        if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
                 TX_STAT_INC(txq->axq_qnum, delim_underrun);
 }
 
@@ -663,30 +759,29 @@ static ssize_t read_file_recv(struct file *file, char __user *user_buf,
 #undef PHY_ERR
 }
 
-void ath_debug_stat_rx(struct ath_softc *sc, struct ath_buf *bf)
+void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
 {
 #define RX_STAT_INC(c) sc->debug.stats.rxstats.c++
 #define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++
 
-        struct ath_desc *ds = bf->bf_desc;
         u32 phyerr;
 
-        if (ds->ds_rxstat.rs_status & ATH9K_RXERR_CRC)
+        if (rs->rs_status & ATH9K_RXERR_CRC)
                 RX_STAT_INC(crc_err);
-        if (ds->ds_rxstat.rs_status & ATH9K_RXERR_DECRYPT)
+        if (rs->rs_status & ATH9K_RXERR_DECRYPT)
                 RX_STAT_INC(decrypt_crc_err);
-        if (ds->ds_rxstat.rs_status & ATH9K_RXERR_MIC)
+        if (rs->rs_status & ATH9K_RXERR_MIC)
                 RX_STAT_INC(mic_err);
-        if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_PRE)
+        if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE)
                 RX_STAT_INC(pre_delim_crc_err);
-        if (ds->ds_rxstat.rs_status & ATH9K_RX_DELIM_CRC_POST)
+        if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST)
                 RX_STAT_INC(post_delim_crc_err);
-        if (ds->ds_rxstat.rs_status & ATH9K_RX_DECRYPT_BUSY)
+        if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY)
                 RX_STAT_INC(decrypt_busy_err);
 
-        if (ds->ds_rxstat.rs_status & ATH9K_RXERR_PHY) {
+        if (rs->rs_status & ATH9K_RXERR_PHY) {
                 RX_STAT_INC(phy_err);
-                phyerr = ds->ds_rxstat.rs_phyerr & 0x24;
+                phyerr = rs->rs_phyerr & 0x24;
                 RX_PHY_ERR_INC(phyerr);
         }
 
@@ -700,6 +795,86 @@ static const struct file_operations fops_recv = {
         .owner = THIS_MODULE
 };
 
+static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
+                                size_t count, loff_t *ppos)
+{
+        struct ath_softc *sc = file->private_data;
+        char buf[32];
+        unsigned int len;
+
+        len = snprintf(buf, sizeof(buf), "0x%08x\n", sc->debug.regidx);
+        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
+                             size_t count, loff_t *ppos)
+{
+        struct ath_softc *sc = file->private_data;
+        unsigned long regidx;
+        char buf[32];
+        ssize_t len;
+
+        len = min(count, sizeof(buf) - 1);
+        if (copy_from_user(buf, user_buf, len))
+                return -EINVAL;
+
+        buf[len] = '\0';
+        if (strict_strtoul(buf, 0, &regidx))
+                return -EINVAL;
+
+        sc->debug.regidx = regidx;
+        return count;
+}
+
+static const struct file_operations fops_regidx = {
+        .read = read_file_regidx,
+        .write = write_file_regidx,
+        .open = ath9k_debugfs_open,
+        .owner = THIS_MODULE
+};
+
+static ssize_t read_file_regval(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;
+        u32 regval;
+
+        regval = REG_READ_D(ah, sc->debug.regidx);
+        len = snprintf(buf, sizeof(buf), "0x%08x\n", regval);
+        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_regval(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 regval;
+        char buf[32];
+        ssize_t len;
+
+        len = min(count, sizeof(buf) - 1);
+        if (copy_from_user(buf, user_buf, len))
+                return -EINVAL;
+
+        buf[len] = '\0';
+        if (strict_strtoul(buf, 0, &regval))
+                return -EINVAL;
+
+        REG_WRITE_D(ah, sc->debug.regidx, regval);
+        return count;
+}
+
+static const struct file_operations fops_regval = {
+        .read = read_file_regval,
+        .write = write_file_regval,
+        .open = ath9k_debugfs_open,
+        .owner = THIS_MODULE
+};
+
 int ath9k_init_debug(struct ath_hw *ah)
 {
         struct ath_common *common = ath9k_hw_common(ah);
@@ -711,54 +886,55 @@ int ath9k_init_debug(struct ath_hw *ah)
         sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
                                                       ath9k_debugfs_root);
         if (!sc->debug.debugfs_phy)
-                goto err;
+                return -ENOMEM;
 
 #ifdef CONFIG_ATH_DEBUG
-        sc->debug.debugfs_debug = debugfs_create_file("debug",
-                S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
-        if (!sc->debug.debugfs_debug)
+        if (!debugfs_create_file("debug", S_IRUSR | S_IWUSR,
+                        sc->debug.debugfs_phy, sc, &fops_debug))
                 goto err;
 #endif
 
-        sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
-                                       sc->debug.debugfs_phy, sc, &fops_dma);
-        if (!sc->debug.debugfs_dma)
+        if (!debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy,
+                        sc, &fops_dma))
+                goto err;
+
+        if (!debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy,
+                        sc, &fops_interrupt))
+                goto err;
+
+        if (!debugfs_create_file("rcstat", S_IRUSR, sc->debug.debugfs_phy,
+                        sc, &fops_rcstat))
+                goto err;
+
+        if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR,
+                        sc->debug.debugfs_phy, sc, &fops_wiphy))
+                goto err;
+
+        if (!debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy,
+                        sc, &fops_xmit))
                 goto err;
 
-        sc->debug.debugfs_interrupt = debugfs_create_file("interrupt",
-                                                     S_IRUSR,
-                                                     sc->debug.debugfs_phy,
-                                                     sc, &fops_interrupt);
-        if (!sc->debug.debugfs_interrupt)
+        if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy,
+                        sc, &fops_recv))
                 goto err;
 
-        sc->debug.debugfs_rcstat = debugfs_create_file("rcstat",
-                                                  S_IRUSR,
-                                                  sc->debug.debugfs_phy,
-                                                  sc, &fops_rcstat);
-        if (!sc->debug.debugfs_rcstat)
+        if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR,
+                        sc->debug.debugfs_phy, sc, &fops_rx_chainmask))
                 goto err;
 
-        sc->debug.debugfs_wiphy = debugfs_create_file(
-                "wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc,
-                &fops_wiphy);
-        if (!sc->debug.debugfs_wiphy)
+        if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR,
+                        sc->debug.debugfs_phy, sc, &fops_tx_chainmask))
                 goto err;
 
-        sc->debug.debugfs_xmit = debugfs_create_file("xmit",
-                                                     S_IRUSR,
-                                                     sc->debug.debugfs_phy,
-                                                     sc, &fops_xmit);
-        if (!sc->debug.debugfs_xmit)
+        if (!debugfs_create_file("regidx", S_IRUSR | S_IWUSR,
+                        sc->debug.debugfs_phy, sc, &fops_regidx))
                 goto err;
 
-        sc->debug.debugfs_recv = debugfs_create_file("recv",
-                                                     S_IRUSR,
-                                                     sc->debug.debugfs_phy,
-                                                     sc, &fops_recv);
-        if (!sc->debug.debugfs_recv)
+        if (!debugfs_create_file("regval", S_IRUSR | S_IWUSR,
+                        sc->debug.debugfs_phy, sc, &fops_regval))
                 goto err;
 
+        sc->debug.regidx = 0;
         return 0;
 err:
         ath9k_exit_debug(ah);
@@ -770,14 +946,7 @@ void ath9k_exit_debug(struct ath_hw *ah)
         struct ath_common *common = ath9k_hw_common(ah);
         struct ath_softc *sc = (struct ath_softc *) common->priv;
 
-        debugfs_remove(sc->debug.debugfs_recv);
-        debugfs_remove(sc->debug.debugfs_xmit);
-        debugfs_remove(sc->debug.debugfs_wiphy);
-        debugfs_remove(sc->debug.debugfs_rcstat);
-        debugfs_remove(sc->debug.debugfs_interrupt);
-        debugfs_remove(sc->debug.debugfs_dma);
-        debugfs_remove(sc->debug.debugfs_debug);
-        debugfs_remove(sc->debug.debugfs_phy);
+        debugfs_remove_recursive(sc->debug.debugfs_phy);
 }
 
 int ath9k_debug_create_root(void)