diff options
Diffstat (limited to 'drivers/net/gianfar_ethtool.c')
| -rw-r--r-- | drivers/net/gianfar_ethtool.c | 527 |
1 files changed, 527 insertions, 0 deletions
diff --git a/drivers/net/gianfar_ethtool.c b/drivers/net/gianfar_ethtool.c new file mode 100644 index 000000000000..28046e9e88ba --- /dev/null +++ b/drivers/net/gianfar_ethtool.c @@ -0,0 +1,527 @@ +/* + * drivers/net/gianfar_ethtool.c + * + * Gianfar Ethernet Driver + * Ethtool support for Gianfar Enet + * Based on e1000 ethtool support + * + * Author: Andy Fleming + * Maintainer: Kumar Gala (kumar.gala@freescale.com) + * + * Copyright (c) 2003,2004 Freescale Semiconductor, Inc. + * + * This software may be used and distributed according to + * the terms of the GNU Public License, Version 2, incorporated herein + * by reference. + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mm.h> + +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/uaccess.h> +#include <linux/module.h> +#include <linux/version.h> +#include <linux/crc32.h> +#include <asm/types.h> +#include <asm/uaccess.h> +#include <linux/ethtool.h> + +#include "gianfar.h" + +#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0)) + +extern int startup_gfar(struct net_device *dev); +extern void stop_gfar(struct net_device *dev); +extern void gfar_receive(int irq, void *dev_id, struct pt_regs *regs); + +void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, + u64 * buf); +void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf); +int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals); +int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals); +void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals); +int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals); +void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo); + +static char stat_gstrings[][ETH_GSTRING_LEN] = { + "rx-dropped-by-kernel", + "rx-large-frame-errors", + "rx-short-frame-errors", + "rx-non-octet-errors", + "rx-crc-errors", + "rx-overrun-errors", + "rx-busy-errors", + "rx-babbling-errors", + "rx-truncated-frames", + "ethernet-bus-error", + "tx-babbling-errors", + "tx-underrun-errors", + "rx-skb-missing-errors", + "tx-timeout-errors", + "tx-rx-64-frames", + "tx-rx-65-127-frames", + "tx-rx-128-255-frames", + "tx-rx-256-511-frames", + "tx-rx-512-1023-frames", + "tx-rx-1024-1518-frames", + "tx-rx-1519-1522-good-vlan", + "rx-bytes", + "rx-packets", + "rx-fcs-errors", + "receive-multicast-packet", + "receive-broadcast-packet", + "rx-control-frame-packets", + "rx-pause-frame-packets", + "rx-unknown-op-code", + "rx-alignment-error", + "rx-frame-length-error", + "rx-code-error", + "rx-carrier-sense-error", + "rx-undersize-packets", + "rx-oversize-packets", + "rx-fragmented-frames", + "rx-jabber-frames", + "rx-dropped-frames", + "tx-byte-counter", + "tx-packets", + "tx-multicast-packets", + "tx-broadcast-packets", + "tx-pause-control-frames", + "tx-deferral-packets", + "tx-excessive-deferral-packets", + "tx-single-collision-packets", + "tx-multiple-collision-packets", + "tx-late-collision-packets", + "tx-excessive-collision-packets", + "tx-total-collision", + "reserved", + "tx-dropped-frames", + "tx-jabber-frames", + "tx-fcs-errors", + "tx-control-frames", + "tx-oversize-frames", + "tx-undersize-frames", + "tx-fragmented-frames", +}; + +/* Fill in an array of 64-bit statistics from various sources. + * This array will be appended to the end of the ethtool_stats + * structure, and returned to user space + */ +void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf) +{ + int i; + struct gfar_private *priv = netdev_priv(dev); + u32 *rmon = (u32 *) & priv->regs->rmon; + u64 *extra = (u64 *) & priv->extra_stats; + struct gfar_stats *stats = (struct gfar_stats *) buf; + + for (i = 0; i < GFAR_RMON_LEN; i++) { + stats->rmon[i] = (u64) (rmon[i]); + } + + for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++) { + stats->extra[i] = extra[i]; + } +} + +/* Returns the number of stats (and their corresponding strings) */ +int gfar_stats_count(struct net_device *dev) +{ + return GFAR_STATS_LEN; +} + +void gfar_gstrings_normon(struct net_device *dev, u32 stringset, u8 * buf) +{ + memcpy(buf, stat_gstrings, GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN); +} + +void gfar_fill_stats_normon(struct net_device *dev, + struct ethtool_stats *dummy, u64 * buf) +{ + int i; + struct gfar_private *priv = netdev_priv(dev); + u64 *extra = (u64 *) & priv->extra_stats; + + for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++) { + buf[i] = extra[i]; + } +} + + +int gfar_stats_count_normon(struct net_device *dev) +{ + return GFAR_EXTRA_STATS_LEN; +} +/* Fills in the drvinfo structure with some basic info */ +void gfar_gdrvinfo(struct net_device *dev, struct + ethtool_drvinfo *drvinfo) +{ + strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN); + strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN); + strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN); + strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN); + drvinfo->n_stats = GFAR_STATS_LEN; + drvinfo->testinfo_len = 0; + drvinfo->regdump_len = 0; + drvinfo->eedump_len = 0; +} + +/* Return the current settings in the ethtool_cmd structure */ +int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct gfar_private *priv = netdev_priv(dev); + uint gigabit_support = + priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ? + SUPPORTED_1000baseT_Full : 0; + uint gigabit_advert = + priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ? + ADVERTISED_1000baseT_Full: 0; + + cmd->supported = (SUPPORTED_10baseT_Half + | SUPPORTED_100baseT_Half + | SUPPORTED_100baseT_Full + | gigabit_support | SUPPORTED_Autoneg); + + /* For now, we always advertise everything */ + cmd->advertising = (ADVERTISED_10baseT_Half + | ADVERTISED_100baseT_Half + | ADVERTISED_100baseT_Full + | gigabit_advert | ADVERTISED_Autoneg); + + cmd->speed = priv->mii_info->speed; + cmd->duplex = priv->mii_info->duplex; + cmd->port = PORT_MII; + cmd->phy_address = priv->mii_info->mii_id; + cmd->transceiver = XCVR_EXTERNAL; + cmd->autoneg = AUTONEG_ENABLE; + cmd->maxtxpkt = priv->txcount; + cmd->maxrxpkt = priv->rxcount; + + return 0; +} + +/* Return the length of the register structure */ +int gfar_reglen(struct net_device *dev) +{ + return sizeof (struct gfar); +} + +/* Return a dump of the GFAR register space */ +void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf) +{ + int i; + struct gfar_private *priv = netdev_priv(dev); + u32 *theregs = (u32 *) priv->regs; + u32 *buf = (u32 *) regbuf; + + for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++) + buf[i] = theregs[i]; +} + +/* Fill in a buffer with the strings which correspond to the + * stats */ +void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf) +{ + memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN); +} + +/* Convert microseconds to ethernet clock ticks, which changes + * depending on what speed the controller is running at */ +static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs) +{ + unsigned int count; + + /* The timer is different, depending on the interface speed */ + switch (priv->mii_info->speed) { + case 1000: + count = GFAR_GBIT_TIME; + break; + case 100: + count = GFAR_100_TIME; + break; + case 10: + default: + count = GFAR_10_TIME; + break; + } + + /* Make sure we return a number greater than 0 + * if usecs > 0 */ + return ((usecs * 1000 + count - 1) / count); +} + +/* Convert ethernet clock ticks to microseconds */ +static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks) +{ + unsigned int count; + + /* The timer is different, depending on the interface speed */ + switch (priv->mii_info->speed) { + case 1000: + count = GFAR_GBIT_TIME; + break; + case 100: + count = GFAR_100_TIME; + break; + case 10: + default: + count = GFAR_10_TIME; + break; + } + + /* Make sure we return a number greater than 0 */ + /* if ticks is > 0 */ + return ((ticks * count) / 1000); +} + +/* Get the coalescing parameters, and put them in the cvals + * structure. */ +int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals) +{ + struct gfar_private *priv = netdev_priv(dev); + + cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, priv->rxtime); + cvals->rx_max_coalesced_frames = priv->rxcount; + + cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, priv->txtime); + cvals->tx_max_coalesced_frames = priv->txcount; + + cvals->use_adaptive_rx_coalesce = 0; + cvals->use_adaptive_tx_coalesce = 0; + + cvals->pkt_rate_low = 0; + cvals->rx_coalesce_usecs_low = 0; + cvals->rx_max_coalesced_frames_low = 0; + cvals->tx_coalesce_usecs_low = 0; + cvals->tx_max_coalesced_frames_low = 0; + + /* When the packet rate is below pkt_rate_high but above + * pkt_rate_low (both measured in packets per second) the + * normal {rx,tx}_* coalescing parameters are used. + */ + + /* When the packet rate is (measured in packets per second) + * is above pkt_rate_high, the {rx,tx}_*_high parameters are + * used. + */ + cvals->pkt_rate_high = 0; + cvals->rx_coalesce_usecs_high = 0; + cvals->rx_max_coalesced_frames_high = 0; + cvals->tx_coalesce_usecs_high = 0; + cvals->tx_max_coalesced_frames_high = 0; + + /* How often to do adaptive coalescing packet rate sampling, + * measured in seconds. Must not be zero. + */ + cvals->rate_sample_interval = 0; + + return 0; +} + +/* Change the coalescing values. + * Both cvals->*_usecs and cvals->*_frames have to be > 0 + * in order for coalescing to be active + */ +int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals) +{ + struct gfar_private *priv = netdev_priv(dev); + + /* Set up rx coalescing */ + if ((cvals->rx_coalesce_usecs == 0) || + (cvals->rx_max_coalesced_frames == 0)) + priv->rxcoalescing = 0; + else + priv->rxcoalescing = 1; + + priv->rxtime = gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs); + priv->rxcount = cvals->rx_max_coalesced_frames; + + /* Set up tx coalescing */ + if ((cvals->tx_coalesce_usecs == 0) || + (cvals->tx_max_coalesced_frames == 0)) + priv->txcoalescing = 0; + else + priv->txcoalescing = 1; + + priv->txtime = gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs); + priv->txcount = cvals->tx_max_coalesced_frames; + + if (priv->rxcoalescing) + gfar_write(&priv->regs->rxic, + mk_ic_value(priv->rxcount, priv->rxtime)); + else + gfar_write(&priv->regs->rxic, 0); + + if (priv->txcoalescing) + gfar_write(&priv->regs->txic, + mk_ic_value(priv->txcount, priv->txtime)); + else + gfar_write(&priv->regs->txic, 0); + + return 0; +} + +/* Fills in rvals with the current ring parameters. Currently, + * rx, rx_mini, and rx_jumbo rings are the same size, as mini and + * jumbo are ignored by the driver */ +void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals) +{ + struct gfar_private *priv = netdev_priv(dev); + + rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE; + rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE; + rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE; + rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE; + + /* Values changeable by the user. The valid values are + * in the range 1 to the "*_max_pending" counterpart above. + */ + rvals->rx_pending = priv->rx_ring_size; + rvals->rx_mini_pending = priv->rx_ring_size; + rvals->rx_jumbo_pending = priv->rx_ring_size; + rvals->tx_pending = priv->tx_ring_size; +} + +/* Change the current ring parameters, stopping the controller if + * necessary so that we don't mess things up while we're in + * motion. We wait for the ring to be clean before reallocating + * the rings. */ +int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals) +{ + u32 tempval; + struct gfar_private *priv = netdev_priv(dev); + int err = 0; + + if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE) + return -EINVAL; + + if (!is_power_of_2(rvals->rx_pending)) { + printk("%s: Ring sizes must be a power of 2\n", + dev->name); + return -EINVAL; + } + + if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE) + return -EINVAL; + + if (!is_power_of_2(rvals->tx_pending)) { + printk("%s: Ring sizes must be a power of 2\n", + dev->name); + return -EINVAL; + } + + /* Stop the controller so we don't rx any more frames */ + /* But first, make sure we clear the bits */ + tempval = gfar_read(&priv->regs->dmactrl); + tempval &= ~(DMACTRL_GRS | DMACTRL_GTS); + gfar_write(&priv->regs->dmactrl, tempval); + + tempval = gfar_read(&priv->regs->dmactrl); + tempval |= (DMACTRL_GRS | DMACTRL_GTS); + gfar_write(&priv->regs->dmactrl, tempval); + + while (!(gfar_read(&priv->regs->ievent) & (IEVENT_GRSC | IEVENT_GTSC))) + cpu_relax(); + + /* Note that rx is not clean right now */ + priv->rxclean = 0; + + if (dev->flags & IFF_UP) { + /* Tell the driver to process the rest of the frames */ + gfar_receive(0, (void *) dev, NULL); + + /* Now wait for it to be done */ + wait_event_interruptible(priv->rxcleanupq, priv->rxclean); + + /* Ok, all packets have been handled. Now we bring it down, + * change the ring size, and bring it up */ + + stop_gfar(dev); + } + + priv->rx_ring_size = rvals->rx_pending; + priv->tx_ring_size = rvals->tx_pending; + + if (dev->flags & IFF_UP) + err = startup_gfar(dev); + + return err; +} + +struct ethtool_ops gfar_ethtool_ops = { + .get_settings = gfar_gsettings, + .get_drvinfo = gfar_gdrvinfo, + .get_regs_len = gfar_reglen, + .get_regs = gfar_get_regs, + .get_link = ethtool_op_get_link, + .get_coalesce = gfar_gcoalesce, + .set_coalesce = gfar_scoalesce, + .get_ringparam = gfar_gringparam, + .set_ringparam = gfar_sringparam, + .get_strings = gfar_gstrings, + .get_stats_count = gfar_stats_count, + .get_ethtool_stats = gfar_fill_stats, +}; + +struct ethtool_ops gfar_normon_nocoalesce_ethtool_ops = { + .get_settings = gfar_gsettings, + .get_drvinfo = gfar_gdrvinfo, + .get_regs_len = gfar_reglen, + .get_regs = gfar_get_regs, + .get_link = ethtool_op_get_link, + .get_ringparam = gfar_gringparam, + .set_ringparam = gfar_sringparam, + .get_strings = gfar_gstrings_normon, + .get_stats_count = gfar_stats_count_normon, + .get_ethtool_stats = gfar_fill_stats_normon, +}; + +struct ethtool_ops gfar_nocoalesce_ethtool_ops = { + .get_settings = gfar_gsettings, + .get_drvinfo = gfar_gdrvinfo, + .get_regs_len = gfar_reglen, + .get_regs = gfar_get_regs, + .get_link = ethtool_op_get_link, + .get_ringparam = gfar_gringparam, + .set_ringparam = gfar_sringparam, + .get_strings = gfar_gstrings, + .get_stats_count = gfar_stats_count, + .get_ethtool_stats = gfar_fill_stats, +}; + +struct ethtool_ops gfar_normon_ethtool_ops = { + .get_settings = gfar_gsettings, + .get_drvinfo = gfar_gdrvinfo, + .get_regs_len = gfar_reglen, + .get_regs = gfar_get_regs, + .get_link = ethtool_op_get_link, + .get_coalesce = gfar_gcoalesce, + .set_coalesce = gfar_scoalesce, + .get_ringparam = gfar_gringparam, + .set_ringparam = gfar_sringparam, + .get_strings = gfar_gstrings_normon, + .get_stats_count = gfar_stats_count_normon, + .get_ethtool_stats = gfar_fill_stats_normon, +}; + +struct ethtool_ops *gfar_op_array[] = { + &gfar_ethtool_ops, + &gfar_normon_ethtool_ops, + &gfar_nocoalesce_ethtool_ops, + &gfar_normon_nocoalesce_ethtool_ops +}; |