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fec: Add support for reading RMON registers
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Add ethtool operation to read RMON registers.

Tested against net-next on i.MX28.

v2: make conditional on #ifndef CONFIG_M5272

Signed-off-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Chris Healy authored and David S. Miller committed Jun 26, 2013
1 parent 77ecaac commit 38ae92d
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55 changes: 55 additions & 0 deletions drivers/net/ethernet/freescale/fec.h
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,61 @@
#define BM_MIIGSK_CFGR_RMII 0x01
#define BM_MIIGSK_CFGR_FRCONT_10M 0x40

#define RMON_T_DROP 0x200 /* Count of frames not cntd correctly */
#define RMON_T_PACKETS 0x204 /* RMON TX packet count */
#define RMON_T_BC_PKT 0x208 /* RMON TX broadcast pkts */
#define RMON_T_MC_PKT 0x20C /* RMON TX multicast pkts */
#define RMON_T_CRC_ALIGN 0x210 /* RMON TX pkts with CRC align err */
#define RMON_T_UNDERSIZE 0x214 /* RMON TX pkts < 64 bytes, good CRC */
#define RMON_T_OVERSIZE 0x218 /* RMON TX pkts > MAX_FL bytes good CRC */
#define RMON_T_FRAG 0x21C /* RMON TX pkts < 64 bytes, bad CRC */
#define RMON_T_JAB 0x220 /* RMON TX pkts > MAX_FL bytes, bad CRC */
#define RMON_T_COL 0x224 /* RMON TX collision count */
#define RMON_T_P64 0x228 /* RMON TX 64 byte pkts */
#define RMON_T_P65TO127 0x22C /* RMON TX 65 to 127 byte pkts */
#define RMON_T_P128TO255 0x230 /* RMON TX 128 to 255 byte pkts */
#define RMON_T_P256TO511 0x234 /* RMON TX 256 to 511 byte pkts */
#define RMON_T_P512TO1023 0x238 /* RMON TX 512 to 1023 byte pkts */
#define RMON_T_P1024TO2047 0x23C /* RMON TX 1024 to 2047 byte pkts */
#define RMON_T_P_GTE2048 0x240 /* RMON TX pkts > 2048 bytes */
#define RMON_T_OCTETS 0x244 /* RMON TX octets */
#define IEEE_T_DROP 0x248 /* Count of frames not counted crtly */
#define IEEE_T_FRAME_OK 0x24C /* Frames tx'd OK */
#define IEEE_T_1COL 0x250 /* Frames tx'd with single collision */
#define IEEE_T_MCOL 0x254 /* Frames tx'd with multiple collision */
#define IEEE_T_DEF 0x258 /* Frames tx'd after deferral delay */
#define IEEE_T_LCOL 0x25C /* Frames tx'd with late collision */
#define IEEE_T_EXCOL 0x260 /* Frames tx'd with excesv collisions */
#define IEEE_T_MACERR 0x264 /* Frames tx'd with TX FIFO underrun */
#define IEEE_T_CSERR 0x268 /* Frames tx'd with carrier sense err */
#define IEEE_T_SQE 0x26C /* Frames tx'd with SQE err */
#define IEEE_T_FDXFC 0x270 /* Flow control pause frames tx'd */
#define IEEE_T_OCTETS_OK 0x274 /* Octet count for frames tx'd w/o err */
#define RMON_R_PACKETS 0x284 /* RMON RX packet count */
#define RMON_R_BC_PKT 0x288 /* RMON RX broadcast pkts */
#define RMON_R_MC_PKT 0x28C /* RMON RX multicast pkts */
#define RMON_R_CRC_ALIGN 0x290 /* RMON RX pkts with CRC alignment err */
#define RMON_R_UNDERSIZE 0x294 /* RMON RX pkts < 64 bytes, good CRC */
#define RMON_R_OVERSIZE 0x298 /* RMON RX pkts > MAX_FL bytes good CRC */
#define RMON_R_FRAG 0x29C /* RMON RX pkts < 64 bytes, bad CRC */
#define RMON_R_JAB 0x2A0 /* RMON RX pkts > MAX_FL bytes, bad CRC */
#define RMON_R_RESVD_O 0x2A4 /* Reserved */
#define RMON_R_P64 0x2A8 /* RMON RX 64 byte pkts */
#define RMON_R_P65TO127 0x2AC /* RMON RX 65 to 127 byte pkts */
#define RMON_R_P128TO255 0x2B0 /* RMON RX 128 to 255 byte pkts */
#define RMON_R_P256TO511 0x2B4 /* RMON RX 256 to 511 byte pkts */
#define RMON_R_P512TO1023 0x2B8 /* RMON RX 512 to 1023 byte pkts */
#define RMON_R_P1024TO2047 0x2BC /* RMON RX 1024 to 2047 byte pkts */
#define RMON_R_P_GTE2048 0x2C0 /* RMON RX pkts > 2048 bytes */
#define RMON_R_OCTETS 0x2C4 /* RMON RX octets */
#define IEEE_R_DROP 0x2C8 /* Count frames not counted correctly */
#define IEEE_R_FRAME_OK 0x2CC /* Frames rx'd OK */
#define IEEE_R_CRC 0x2D0 /* Frames rx'd with CRC err */
#define IEEE_R_ALIGN 0x2D4 /* Frames rx'd with alignment err */
#define IEEE_R_MACERR 0x2D8 /* Receive FIFO overflow count */
#define IEEE_R_FDXFC 0x2DC /* Flow control pause frames rx'd */
#define IEEE_R_OCTETS_OK 0x2E0 /* Octet cnt for frames rx'd w/o err */

#else

#define FEC_ECNTRL 0x000 /* Ethernet control reg */
Expand Down
114 changes: 114 additions & 0 deletions drivers/net/ethernet/freescale/fec_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -604,6 +604,14 @@ fec_restart(struct net_device *ndev, int duplex)
if (fep->bufdesc_ex)
ecntl |= (1 << 4);

#ifndef CONFIG_M5272
/* Disable, clear, and enable the MIB */
writel(1 << 31, fep->hwp + FEC_MIB_CTRLSTAT);
for (i = RMON_T_DROP; i < IEEE_R_OCTETS_OK; i++)
writel(0, fep->hwp + i);
writel(0, fep->hwp + FEC_MIB_CTRLSTAT);
#endif

/* And last, enable the transmit and receive processing */
writel(ecntl, fep->hwp + FEC_ECNTRL);
writel(0, fep->hwp + FEC_R_DES_ACTIVE);
Expand Down Expand Up @@ -1435,6 +1443,107 @@ static int fec_enet_set_pauseparam(struct net_device *ndev,
return 0;
}

#ifndef CONFIG_M5272
static const struct fec_stat {
char name[ETH_GSTRING_LEN];
u16 offset;
} fec_stats[] = {
/* RMON TX */
{ "tx_dropped", RMON_T_DROP },
{ "tx_packets", RMON_T_PACKETS },
{ "tx_broadcast", RMON_T_BC_PKT },
{ "tx_multicast", RMON_T_MC_PKT },
{ "tx_crc_errors", RMON_T_CRC_ALIGN },
{ "tx_undersize", RMON_T_UNDERSIZE },
{ "tx_oversize", RMON_T_OVERSIZE },
{ "tx_fragment", RMON_T_FRAG },
{ "tx_jabber", RMON_T_JAB },
{ "tx_collision", RMON_T_COL },
{ "tx_64byte", RMON_T_P64 },
{ "tx_65to127byte", RMON_T_P65TO127 },
{ "tx_128to255byte", RMON_T_P128TO255 },
{ "tx_256to511byte", RMON_T_P256TO511 },
{ "tx_512to1023byte", RMON_T_P512TO1023 },
{ "tx_1024to2047byte", RMON_T_P1024TO2047 },
{ "tx_GTE2048byte", RMON_T_P_GTE2048 },
{ "tx_octets", RMON_T_OCTETS },

/* IEEE TX */
{ "IEEE_tx_drop", IEEE_T_DROP },
{ "IEEE_tx_frame_ok", IEEE_T_FRAME_OK },
{ "IEEE_tx_1col", IEEE_T_1COL },
{ "IEEE_tx_mcol", IEEE_T_MCOL },
{ "IEEE_tx_def", IEEE_T_DEF },
{ "IEEE_tx_lcol", IEEE_T_LCOL },
{ "IEEE_tx_excol", IEEE_T_EXCOL },
{ "IEEE_tx_macerr", IEEE_T_MACERR },
{ "IEEE_tx_cserr", IEEE_T_CSERR },
{ "IEEE_tx_sqe", IEEE_T_SQE },
{ "IEEE_tx_fdxfc", IEEE_T_FDXFC },
{ "IEEE_tx_octets_ok", IEEE_T_OCTETS_OK },

/* RMON RX */
{ "rx_packets", RMON_R_PACKETS },
{ "rx_broadcast", RMON_R_BC_PKT },
{ "rx_multicast", RMON_R_MC_PKT },
{ "rx_crc_errors", RMON_R_CRC_ALIGN },
{ "rx_undersize", RMON_R_UNDERSIZE },
{ "rx_oversize", RMON_R_OVERSIZE },
{ "rx_fragment", RMON_R_FRAG },
{ "rx_jabber", RMON_R_JAB },
{ "rx_64byte", RMON_R_P64 },
{ "rx_65to127byte", RMON_R_P65TO127 },
{ "rx_128to255byte", RMON_R_P128TO255 },
{ "rx_256to511byte", RMON_R_P256TO511 },
{ "rx_512to1023byte", RMON_R_P512TO1023 },
{ "rx_1024to2047byte", RMON_R_P1024TO2047 },
{ "rx_GTE2048byte", RMON_R_P_GTE2048 },
{ "rx_octets", RMON_R_OCTETS },

/* IEEE RX */
{ "IEEE_rx_drop", IEEE_R_DROP },
{ "IEEE_rx_frame_ok", IEEE_R_FRAME_OK },
{ "IEEE_rx_crc", IEEE_R_CRC },
{ "IEEE_rx_align", IEEE_R_ALIGN },
{ "IEEE_rx_macerr", IEEE_R_MACERR },
{ "IEEE_rx_fdxfc", IEEE_R_FDXFC },
{ "IEEE_rx_octets_ok", IEEE_R_OCTETS_OK },
};

static void fec_enet_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct fec_enet_private *fep = netdev_priv(dev);
int i;

for (i = 0; i < ARRAY_SIZE(fec_stats); i++)
data[i] = readl(fep->hwp + fec_stats[i].offset);
}

static void fec_enet_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < ARRAY_SIZE(fec_stats); i++)
memcpy(data + i * ETH_GSTRING_LEN,
fec_stats[i].name, ETH_GSTRING_LEN);
break;
}
}

static int fec_enet_get_sset_count(struct net_device *dev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return ARRAY_SIZE(fec_stats);
default:
return -EOPNOTSUPP;
}
}
#endif

static int fec_enet_nway_reset(struct net_device *dev)
{
struct fec_enet_private *fep = netdev_priv(dev);
Expand All @@ -1455,6 +1564,11 @@ static const struct ethtool_ops fec_enet_ethtool_ops = {
.get_link = ethtool_op_get_link,
.get_ts_info = fec_enet_get_ts_info,
.nway_reset = fec_enet_nway_reset,
#ifndef CONFIG_M5272
.get_ethtool_stats = fec_enet_get_ethtool_stats,
.get_strings = fec_enet_get_strings,
.get_sset_count = fec_enet_get_sset_count,
#endif
};

static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
Expand Down

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