bgmac: Add support for ethtool statistics

Read the statistics from the BGMAC's builtin MAC and return them to
user-space using the standard ethtool helpers.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 156fa63..133bf64 100644 (file)
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1382,6 +1382,127 @@ static const struct net_device_ops bgmac_netdev_ops = {
  * ethtool_ops
  **************************************************/
 
+struct bgmac_stat {
+       u8 size;
+       u32 offset;
+       const char *name;
+};
+
+static struct bgmac_stat bgmac_get_strings_stats[] = {
+       { 8, BGMAC_TX_GOOD_OCTETS, "tx_good_octets" },
+       { 4, BGMAC_TX_GOOD_PKTS, "tx_good" },
+       { 8, BGMAC_TX_OCTETS, "tx_octets" },
+       { 4, BGMAC_TX_PKTS, "tx_pkts" },
+       { 4, BGMAC_TX_BROADCAST_PKTS, "tx_broadcast" },
+       { 4, BGMAC_TX_MULTICAST_PKTS, "tx_multicast" },
+       { 4, BGMAC_TX_LEN_64, "tx_64" },
+       { 4, BGMAC_TX_LEN_65_TO_127, "tx_65_127" },
+       { 4, BGMAC_TX_LEN_128_TO_255, "tx_128_255" },
+       { 4, BGMAC_TX_LEN_256_TO_511, "tx_256_511" },
+       { 4, BGMAC_TX_LEN_512_TO_1023, "tx_512_1023" },
+       { 4, BGMAC_TX_LEN_1024_TO_1522, "tx_1024_1522" },
+       { 4, BGMAC_TX_LEN_1523_TO_2047, "tx_1523_2047" },
+       { 4, BGMAC_TX_LEN_2048_TO_4095, "tx_2048_4095" },
+       { 4, BGMAC_TX_LEN_4096_TO_8191, "tx_4096_8191" },
+       { 4, BGMAC_TX_LEN_8192_TO_MAX, "tx_8192_max" },
+       { 4, BGMAC_TX_JABBER_PKTS, "tx_jabber" },
+       { 4, BGMAC_TX_OVERSIZE_PKTS, "tx_oversize" },
+       { 4, BGMAC_TX_FRAGMENT_PKTS, "tx_fragment" },
+       { 4, BGMAC_TX_UNDERRUNS, "tx_underruns" },
+       { 4, BGMAC_TX_TOTAL_COLS, "tx_total_cols" },
+       { 4, BGMAC_TX_SINGLE_COLS, "tx_single_cols" },
+       { 4, BGMAC_TX_MULTIPLE_COLS, "tx_multiple_cols" },
+       { 4, BGMAC_TX_EXCESSIVE_COLS, "tx_excessive_cols" },
+       { 4, BGMAC_TX_LATE_COLS, "tx_late_cols" },
+       { 4, BGMAC_TX_DEFERED, "tx_defered" },
+       { 4, BGMAC_TX_CARRIER_LOST, "tx_carrier_lost" },
+       { 4, BGMAC_TX_PAUSE_PKTS, "tx_pause" },
+       { 4, BGMAC_TX_UNI_PKTS, "tx_unicast" },
+       { 4, BGMAC_TX_Q0_PKTS, "tx_q0" },
+       { 8, BGMAC_TX_Q0_OCTETS, "tx_q0_octets" },
+       { 4, BGMAC_TX_Q1_PKTS, "tx_q1" },
+       { 8, BGMAC_TX_Q1_OCTETS, "tx_q1_octets" },
+       { 4, BGMAC_TX_Q2_PKTS, "tx_q2" },
+       { 8, BGMAC_TX_Q2_OCTETS, "tx_q2_octets" },
+       { 4, BGMAC_TX_Q3_PKTS, "tx_q3" },
+       { 8, BGMAC_TX_Q3_OCTETS, "tx_q3_octets" },
+       { 8, BGMAC_RX_GOOD_OCTETS, "rx_good_octets" },
+       { 4, BGMAC_RX_GOOD_PKTS, "rx_good" },
+       { 8, BGMAC_RX_OCTETS, "rx_octets" },
+       { 4, BGMAC_RX_PKTS, "rx_pkts" },
+       { 4, BGMAC_RX_BROADCAST_PKTS, "rx_broadcast" },
+       { 4, BGMAC_RX_MULTICAST_PKTS, "rx_multicast" },
+       { 4, BGMAC_RX_LEN_64, "rx_64" },
+       { 4, BGMAC_RX_LEN_65_TO_127, "rx_65_127" },
+       { 4, BGMAC_RX_LEN_128_TO_255, "rx_128_255" },
+       { 4, BGMAC_RX_LEN_256_TO_511, "rx_256_511" },
+       { 4, BGMAC_RX_LEN_512_TO_1023, "rx_512_1023" },
+       { 4, BGMAC_RX_LEN_1024_TO_1522, "rx_1024_1522" },
+       { 4, BGMAC_RX_LEN_1523_TO_2047, "rx_1523_2047" },
+       { 4, BGMAC_RX_LEN_2048_TO_4095, "rx_2048_4095" },
+       { 4, BGMAC_RX_LEN_4096_TO_8191, "rx_4096_8191" },
+       { 4, BGMAC_RX_LEN_8192_TO_MAX, "rx_8192_max" },
+       { 4, BGMAC_RX_JABBER_PKTS, "rx_jabber" },
+       { 4, BGMAC_RX_OVERSIZE_PKTS, "rx_oversize" },
+       { 4, BGMAC_RX_FRAGMENT_PKTS, "rx_fragment" },
+       { 4, BGMAC_RX_MISSED_PKTS, "rx_missed" },
+       { 4, BGMAC_RX_CRC_ALIGN_ERRS, "rx_crc_align" },
+       { 4, BGMAC_RX_UNDERSIZE, "rx_undersize" },
+       { 4, BGMAC_RX_CRC_ERRS, "rx_crc" },
+       { 4, BGMAC_RX_ALIGN_ERRS, "rx_align" },
+       { 4, BGMAC_RX_SYMBOL_ERRS, "rx_symbol" },
+       { 4, BGMAC_RX_PAUSE_PKTS, "rx_pause" },
+       { 4, BGMAC_RX_NONPAUSE_PKTS, "rx_nonpause" },
+       { 4, BGMAC_RX_SACHANGES, "rx_sa_changes" },
+       { 4, BGMAC_RX_UNI_PKTS, "rx_unicast" },
+};
+
+#define BGMAC_STATS_LEN        ARRAY_SIZE(bgmac_get_strings_stats)
+
+static int bgmac_get_sset_count(struct net_device *dev, int string_set)
+{
+       switch (string_set) {
+       case ETH_SS_STATS:
+               return BGMAC_STATS_LEN;
+       }
+
+       return -EOPNOTSUPP;
+}
+
+static void bgmac_get_strings(struct net_device *dev, u32 stringset,
+                             u8 *data)
+{
+       int i;
+
+       if (stringset != ETH_SS_STATS)
+               return;
+
+       for (i = 0; i < BGMAC_STATS_LEN; i++)
+               strlcpy(data + i * ETH_GSTRING_LEN,
+                       bgmac_get_strings_stats[i].name, ETH_GSTRING_LEN);
+}
+
+static void bgmac_get_ethtool_stats(struct net_device *dev,
+                                   struct ethtool_stats *ss, uint64_t *data)
+{
+       struct bgmac *bgmac = netdev_priv(dev);
+       const struct bgmac_stat *s;
+       unsigned int i;
+       u64 val;
+
+       if (!netif_running(dev))
+               return;
+
+       for (i = 0; i < BGMAC_STATS_LEN; i++) {
+               s = &bgmac_get_strings_stats[i];
+               val = 0;
+               if (s->size == 8)
+                       val = (u64)bgmac_read(bgmac, s->offset + 4) << 32;
+               val |= bgmac_read(bgmac, s->offset);
+               data[i] = val;
+       }
+}
+
 static int bgmac_get_settings(struct net_device *net_dev,
                              struct ethtool_cmd *cmd)
 {
@@ -1406,6 +1527,9 @@ static void bgmac_get_drvinfo(struct net_device *net_dev,
 }
 
 static const struct ethtool_ops bgmac_ethtool_ops = {
+       .get_strings            = bgmac_get_strings,
+       .get_sset_count         = bgmac_get_sset_count,
+       .get_ethtool_stats      = bgmac_get_ethtool_stats,
        .get_settings           = bgmac_get_settings,
        .set_settings           = bgmac_set_settings,
        .get_drvinfo            = bgmac_get_drvinfo,

diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h
index 9a03c14..853d72b 100644 (file)
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -123,7 +123,7 @@
 #define BGMAC_TX_LEN_1024_TO_1522              0x334
 #define BGMAC_TX_LEN_1523_TO_2047              0x338
 #define BGMAC_TX_LEN_2048_TO_4095              0x33c
-#define BGMAC_TX_LEN_4095_TO_8191              0x340
+#define BGMAC_TX_LEN_4096_TO_8191              0x340
 #define BGMAC_TX_LEN_8192_TO_MAX               0x344
 #define BGMAC_TX_JABBER_PKTS                   0x348           /* Error */
 #define BGMAC_TX_OVERSIZE_PKTS                 0x34c           /* Error */
@@ -166,7 +166,7 @@
 #define BGMAC_RX_LEN_1024_TO_1522              0x3e4
 #define BGMAC_RX_LEN_1523_TO_2047              0x3e8
 #define BGMAC_RX_LEN_2048_TO_4095              0x3ec
-#define BGMAC_RX_LEN_4095_TO_8191              0x3f0
+#define BGMAC_RX_LEN_4096_TO_8191              0x3f0
 #define BGMAC_RX_LEN_8192_TO_MAX               0x3f4
 #define BGMAC_RX_JABBER_PKTS                   0x3f8           /* Error */
 #define BGMAC_RX_OVERSIZE_PKTS                 0x3fc           /* Error */