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Date: Tue, 25 Jun 2013 22:08:52 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Chris Healy <cphealy@...il.com>
Cc: "David S. Miller" <davem@...emloft.net>,
Frank Li <Frank.Li@...escale.com>,
Fabio Estevam <fabio.estevam@...escale.com>,
Ruslan Sushko <rsushko@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 1/1] fec: Add support for reading RMON registers
On Tue, Jun 25, 2013 at 09:25:08PM -0700, Chris Healy wrote:
> Add ethtool operation to read RMON registers.
>
> Tested against net-next on i.MX28.
>
> Signed-off-by: Chris Healy <cphealy@...il.com>
> ---
Hi Chris,
headline should say [PATCH v2], and you should have a changelog here.
Otherwise it is difficult to distinguish the patch from v1.
Thanks,
Guenter
> drivers/net/ethernet/freescale/fec.h | 55 ++++++++++++++
> drivers/net/ethernet/freescale/fec_main.c | 114 ++++++++++++++++++++++++++++++
> 2 files changed, 169 insertions(+)
>
> diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
> index e3ed6c5..8362a03 100644
> --- a/drivers/net/ethernet/freescale/fec.h
> +++ b/drivers/net/ethernet/freescale/fec.h
> @@ -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 */
> diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
> index 46f2544..ed6180e 100644
> --- a/drivers/net/ethernet/freescale/fec_main.c
> +++ b/drivers/net/ethernet/freescale/fec_main.c
> @@ -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);
> @@ -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);
> @@ -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)
> --
> 1.8.1.2
>
>
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