[linux-2.6-block.git] / drivers / net / gianfar_ethtool.c

/*
 *  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 <linux/mii.h>
#include <linux/phy.h>

#include "gianfar.h"

#define is_power_of_2(x)        ((x) != 0 && (((x) & ((x) - 1)) == 0))

extern void gfar_start(struct net_device *dev);
extern int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);

#define GFAR_MAX_COAL_USECS 0xffff
#define GFAR_MAX_COAL_FRAMES 0xff
static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
		     u64 * buf);
static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
static 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 a buffer with the strings which correspond to the
 * stats */
static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
{
	struct gfar_private *priv = netdev_priv(dev);
	
	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
		memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
	else
		memcpy(buf, stat_gstrings,
				GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
}

/* 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
 */
static void gfar_fill_stats(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;

	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
		u32 *rmon = (u32 *) & priv->regs->rmon;
		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];
	} else
		for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
			buf[i] = extra[i];
}

/* Returns the number of stats (and their corresponding strings) */
static int gfar_stats_count(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
		return GFAR_STATS_LEN;
	else
		return GFAR_EXTRA_STATS_LEN;
}

/* Fills in the drvinfo structure with some basic info */
static 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;
}


static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct phy_device *phydev = priv->phydev;

	if (NULL == phydev)
		return -ENODEV;

	return phy_ethtool_sset(phydev, cmd);
}


/* Return the current settings in the ethtool_cmd structure */
static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct phy_device *phydev = priv->phydev;

	if (NULL == phydev)
		return -ENODEV;
	
	cmd->maxtxpkt = priv->txcount;
	cmd->maxrxpkt = priv->rxcount;

	return phy_ethtool_gset(phydev, cmd);
}

/* Return the length of the register structure */
static int gfar_reglen(struct net_device *dev)
{
	return sizeof (struct gfar);
}

/* Return a dump of the GFAR register space */
static 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];
}

/* 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->phydev->speed) {
	case SPEED_1000:
		count = GFAR_GBIT_TIME;
		break;
	case SPEED_100:
		count = GFAR_100_TIME;
		break;
	case SPEED_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->phydev->speed) {
	case SPEED_1000:
		count = GFAR_GBIT_TIME;
		break;
	case SPEED_100:
		count = GFAR_100_TIME;
		break;
	case SPEED_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.  */
static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	
	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
		return -EOPNOTSUPP;

	if (NULL == priv->phydev)
		return -ENODEV;

	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
 */
static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
		return -EOPNOTSUPP;

	/* Set up rx coalescing */
	if ((cvals->rx_coalesce_usecs == 0) ||
	    (cvals->rx_max_coalesced_frames == 0))
		priv->rxcoalescing = 0;
	else
		priv->rxcoalescing = 1;

	if (NULL == priv->phydev)
		return -ENODEV;

	/* Check the bounds of the values */
	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
		pr_info("Coalescing is limited to %d microseconds\n",
				GFAR_MAX_COAL_USECS);
		return -EINVAL;
	}

	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
		pr_info("Coalescing is limited to %d frames\n",
				GFAR_MAX_COAL_FRAMES);
		return -EINVAL;
	}

	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;

	/* Check the bounds of the values */
	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
		pr_info("Coalescing is limited to %d microseconds\n",
				GFAR_MAX_COAL_USECS);
		return -EINVAL;
	}

	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
		pr_info("Coalescing is limited to %d frames\n",
				GFAR_MAX_COAL_FRAMES);
		return -EINVAL;
	}

	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 */
static 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. */
static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
{
	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;
	}

	if (dev->flags & IFF_UP) {
		unsigned long flags;

		/* Halt TX and RX, and process the frames which
		 * have already been received */
		spin_lock_irqsave(&priv->lock, flags);
		gfar_halt(dev);
		gfar_clean_rx_ring(dev, priv->rx_ring_size);
		spin_unlock_irqrestore(&priv->lock, flags);

		/* Now we take down the rings to rebuild them */
		stop_gfar(dev);
	}

	/* Change the size */
	priv->rx_ring_size = rvals->rx_pending;
	priv->tx_ring_size = rvals->tx_pending;

	/* Rebuild the rings with the new size */
	if (dev->flags & IFF_UP)
		err = startup_gfar(dev);

	return err;
}

static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
{
	struct gfar_private *priv = netdev_priv(dev);
	int err = 0;

	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return -EOPNOTSUPP;

	if (dev->flags & IFF_UP) {
		unsigned long flags;

		/* Halt TX and RX, and process the frames which
		 * have already been received */
		spin_lock_irqsave(&priv->lock, flags);
		gfar_halt(dev);
		gfar_clean_rx_ring(dev, priv->rx_ring_size);
		spin_unlock_irqrestore(&priv->lock, flags);

		/* Now we take down the rings to rebuild them */
		stop_gfar(dev);
	}

	priv->rx_csum_enable = data;

	if (dev->flags & IFF_UP)
		err = startup_gfar(dev);

	return err;
}

static uint32_t gfar_get_rx_csum(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return 0;

	return priv->rx_csum_enable;
}

static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
{
	unsigned long flags;
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return -EOPNOTSUPP;

	spin_lock_irqsave(&priv->lock, flags);
	gfar_halt(dev);

	if (data)
		dev->features |= NETIF_F_IP_CSUM;
	else
		dev->features &= ~NETIF_F_IP_CSUM;

	gfar_start(dev);
	spin_unlock_irqrestore(&priv->lock, flags);

	return 0;
}

static uint32_t gfar_get_tx_csum(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
		return 0;

	return (dev->features & NETIF_F_IP_CSUM) != 0;
}

static uint32_t gfar_get_msglevel(struct net_device *dev)
{       
	struct gfar_private *priv = netdev_priv(dev);
	return priv->msg_enable;
}       
        
static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
{       
	struct gfar_private *priv = netdev_priv(dev);
	priv->msg_enable = data;
}


struct ethtool_ops gfar_ethtool_ops = {
	.get_settings = gfar_gsettings,
	.set_settings = gfar_ssettings,
	.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,
	.get_rx_csum = gfar_get_rx_csum,
	.get_tx_csum = gfar_get_tx_csum,
	.set_rx_csum = gfar_set_rx_csum,
	.set_tx_csum = gfar_set_tx_csum,
	.get_msglevel = gfar_get_msglevel,
	.set_msglevel = gfar_set_msglevel,
};
Commit	Line	Data
1da177e4 LT	1	/*
	2	* drivers/net/gianfar_ethtool.c
	3	*
	4	* Gianfar Ethernet Driver
	5	* Ethtool support for Gianfar Enet
	6	* Based on e1000 ethtool support
	7	*
	8	* Author: Andy Fleming
	9	* Maintainer: Kumar Gala (kumar.gala@freescale.com)
	10	*
	11	* Copyright (c) 2003,2004 Freescale Semiconductor, Inc.
	12	*
	13	* This software may be used and distributed according to
	14	* the terms of the GNU Public License, Version 2, incorporated herein
	15	* by reference.
	16	*/
	17
	18	#include <linux/config.h>
	19	#include <linux/kernel.h>
	20	#include <linux/sched.h>
	21	#include <linux/string.h>
	22	#include <linux/errno.h>
	23	#include <linux/slab.h>
	24	#include <linux/interrupt.h>
	25	#include <linux/init.h>
	26	#include <linux/delay.h>
	27	#include <linux/netdevice.h>
	28	#include <linux/etherdevice.h>
	29	#include <linux/skbuff.h>
	30	#include <linux/spinlock.h>
	31	#include <linux/mm.h>
	32
	33	#include <asm/io.h>
	34	#include <asm/irq.h>
	35	#include <asm/uaccess.h>
	36	#include <linux/module.h>
	37	#include <linux/version.h>
	38	#include <linux/crc32.h>
	39	#include <asm/types.h>
	40	#include <asm/uaccess.h>
	41	#include <linux/ethtool.h>
bb40dcbb AF	42	#include <linux/mii.h>
bb40dcbb AF	43	#include <linux/phy.h>
1da177e4 LT	44
	45	#include "gianfar.h"
	46
	47	#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0))
	48
0bbaf069 KG	49	extern void gfar_start(struct net_device *dev);
0bbaf069 KG	50	extern int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);
1da177e4	51
bb40dcbb AF	52	#define GFAR_MAX_COAL_USECS 0xffff
bb40dcbb AF	53	#define GFAR_MAX_COAL_FRAMES 0xff
0bbaf069	54	static void gfar_fill_stats(struct net_device dev, struct ethtool_stats dummy,
1da177e4	55	u64 * buf);
0bbaf069 KG	56	static void gfar_gstrings(struct net_device dev, u32 stringset, u8 buf);
	57	static int gfar_gcoalesce(struct net_device dev, struct ethtool_coalesce cvals);
	58	static int gfar_scoalesce(struct net_device dev, struct ethtool_coalesce cvals);
	59	static void gfar_gringparam(struct net_device dev, struct ethtool_ringparam rvals);
	60	static int gfar_sringparam(struct net_device dev, struct ethtool_ringparam rvals);
	61	static void gfar_gdrvinfo(struct net_device dev, struct ethtool_drvinfo drvinfo);
1da177e4 LT	62
	63	static char stat_gstrings[][ETH_GSTRING_LEN] = {
	64	"rx-dropped-by-kernel",
	65	"rx-large-frame-errors",
	66	"rx-short-frame-errors",
	67	"rx-non-octet-errors",
	68	"rx-crc-errors",
	69	"rx-overrun-errors",
	70	"rx-busy-errors",
	71	"rx-babbling-errors",
	72	"rx-truncated-frames",
	73	"ethernet-bus-error",
	74	"tx-babbling-errors",
	75	"tx-underrun-errors",
	76	"rx-skb-missing-errors",
	77	"tx-timeout-errors",
	78	"tx-rx-64-frames",
	79	"tx-rx-65-127-frames",
	80	"tx-rx-128-255-frames",
	81	"tx-rx-256-511-frames",
	82	"tx-rx-512-1023-frames",
	83	"tx-rx-1024-1518-frames",
	84	"tx-rx-1519-1522-good-vlan",
	85	"rx-bytes",
	86	"rx-packets",
	87	"rx-fcs-errors",
	88	"receive-multicast-packet",
	89	"receive-broadcast-packet",
	90	"rx-control-frame-packets",
	91	"rx-pause-frame-packets",
	92	"rx-unknown-op-code",
	93	"rx-alignment-error",
	94	"rx-frame-length-error",
	95	"rx-code-error",
	96	"rx-carrier-sense-error",
	97	"rx-undersize-packets",
	98	"rx-oversize-packets",
	99	"rx-fragmented-frames",
	100	"rx-jabber-frames",
	101	"rx-dropped-frames",
	102	"tx-byte-counter",
	103	"tx-packets",
	104	"tx-multicast-packets",
	105	"tx-broadcast-packets",
	106	"tx-pause-control-frames",
	107	"tx-deferral-packets",
	108	"tx-excessive-deferral-packets",
	109	"tx-single-collision-packets",
	110	"tx-multiple-collision-packets",
	111	"tx-late-collision-packets",
	112	"tx-excessive-collision-packets",
	113	"tx-total-collision",
	114	"reserved",
	115	"tx-dropped-frames",
	116	"tx-jabber-frames",
	117	"tx-fcs-errors",
	118	"tx-control-frames",
	119	"tx-oversize-frames",
	120	"tx-undersize-frames",
	121	"tx-fragmented-frames",
	122	};
	123
0bbaf069 KG	124	/* Fill in a buffer with the strings which correspond to the
	125	* stats */
	126	static void gfar_gstrings(struct net_device dev, u32 stringset, u8 buf)
	127	{
	128	struct gfar_private *priv = netdev_priv(dev);
	129
	130	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
	131	memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
	132	else
	133	memcpy(buf, stat_gstrings,
	134	GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
	135	}
	136
1da177e4 LT	137	/* Fill in an array of 64-bit statistics from various sources.
	138	* This array will be appended to the end of the ethtool_stats
	139	* structure, and returned to user space
	140	*/
0bbaf069	141	static void gfar_fill_stats(struct net_device dev, struct ethtool_stats dummy, u64 * buf)
1da177e4 LT	142	{
	143	int i;
	144	struct gfar_private *priv = netdev_priv(dev);
1da177e4	145	u64 extra = (u64 ) & priv->extra_stats;
1da177e4	146
0bbaf069 KG	147	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
	148	u32 rmon = (u32 ) & priv->regs->rmon;
	149	struct gfar_stats stats = (struct gfar_stats ) buf;
1da177e4	150
0bbaf069 KG	151	for (i = 0; i < GFAR_RMON_LEN; i++)
0bbaf069 KG	152	stats->rmon[i] = (u64) (rmon[i]);
1da177e4	153
0bbaf069 KG	154	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
	155	stats->extra[i] = extra[i];
	156	} else
	157	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
	158	buf[i] = extra[i];
1da177e4 LT	159	}
1da177e4 LT	160
0bbaf069 KG	161	/* Returns the number of stats (and their corresponding strings) */
0bbaf069 KG	162	static int gfar_stats_count(struct net_device *dev)
1da177e4	163	{
1da177e4	164	struct gfar_private *priv = netdev_priv(dev);
1da177e4	165
0bbaf069 KG	166	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
	167	return GFAR_STATS_LEN;
	168	else
	169	return GFAR_EXTRA_STATS_LEN;
1da177e4 LT	170	}
1da177e4 LT	171
1da177e4	172	/* Fills in the drvinfo structure with some basic info */
0bbaf069	173	static void gfar_gdrvinfo(struct net_device *dev, struct
1da177e4 LT	174	ethtool_drvinfo *drvinfo)
	175	{
	176	strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
	177	strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
	178	strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
	179	strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
	180	drvinfo->n_stats = GFAR_STATS_LEN;
	181	drvinfo->testinfo_len = 0;
	182	drvinfo->regdump_len = 0;
	183	drvinfo->eedump_len = 0;
	184	}
	185
bb40dcbb AF	186
	187	static int gfar_ssettings(struct net_device dev, struct ethtool_cmd cmd)
	188	{
	189	struct gfar_private *priv = netdev_priv(dev);
	190	struct phy_device *phydev = priv->phydev;
	191
	192	if (NULL == phydev)
	193	return -ENODEV;
	194
	195	return phy_ethtool_sset(phydev, cmd);
	196	}
	197
	198
1da177e4	199	/* Return the current settings in the ethtool_cmd structure */
0bbaf069	200	static int gfar_gsettings(struct net_device dev, struct ethtool_cmd cmd)
1da177e4 LT	201	{
1da177e4 LT	202	struct gfar_private *priv = netdev_priv(dev);
bb40dcbb AF	203	struct phy_device *phydev = priv->phydev;
	204
	205	if (NULL == phydev)
	206	return -ENODEV;
	207
1da177e4 LT	208	cmd->maxtxpkt = priv->txcount;
	209	cmd->maxrxpkt = priv->rxcount;
	210
bb40dcbb	211	return phy_ethtool_gset(phydev, cmd);
1da177e4 LT	212	}
	213
	214	/* Return the length of the register structure */
0bbaf069	215	static int gfar_reglen(struct net_device *dev)
1da177e4 LT	216	{
	217	return sizeof (struct gfar);
	218	}
	219
	220	/* Return a dump of the GFAR register space */
0bbaf069	221	static void gfar_get_regs(struct net_device dev, struct ethtool_regs regs, void *regbuf)
1da177e4 LT	222	{
	223	int i;
	224	struct gfar_private *priv = netdev_priv(dev);
	225	u32 theregs = (u32 ) priv->regs;
	226	u32 buf = (u32 ) regbuf;
	227
	228	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
	229	buf[i] = theregs[i];
	230	}
	231
1da177e4 LT	232	/* Convert microseconds to ethernet clock ticks, which changes
	233	* depending on what speed the controller is running at */
	234	static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
	235	{
	236	unsigned int count;
	237
	238	/* The timer is different, depending on the interface speed */
bb40dcbb AF	239	switch (priv->phydev->speed) {
bb40dcbb AF	240	case SPEED_1000:
1da177e4 LT	241	count = GFAR_GBIT_TIME;
1da177e4 LT	242	break;
bb40dcbb	243	case SPEED_100:
1da177e4 LT	244	count = GFAR_100_TIME;
1da177e4 LT	245	break;
bb40dcbb	246	case SPEED_10:
1da177e4 LT	247	default:
	248	count = GFAR_10_TIME;
	249	break;
	250	}
	251
	252	/* Make sure we return a number greater than 0
	253	* if usecs > 0 */
	254	return ((usecs * 1000 + count - 1) / count);
	255	}
	256
	257	/* Convert ethernet clock ticks to microseconds */
	258	static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
	259	{
	260	unsigned int count;
	261
	262	/* The timer is different, depending on the interface speed */
bb40dcbb AF	263	switch (priv->phydev->speed) {
bb40dcbb AF	264	case SPEED_1000:
1da177e4 LT	265	count = GFAR_GBIT_TIME;
1da177e4 LT	266	break;
bb40dcbb	267	case SPEED_100:
1da177e4 LT	268	count = GFAR_100_TIME;
1da177e4 LT	269	break;
bb40dcbb	270	case SPEED_10:
1da177e4 LT	271	default:
	272	count = GFAR_10_TIME;
	273	break;
	274	}
	275
	276	/* Make sure we return a number greater than 0 */
	277	/* if ticks is > 0 */
	278	return ((ticks * count) / 1000);
	279	}
	280
	281	/* Get the coalescing parameters, and put them in the cvals
	282	* structure. */
0bbaf069	283	static int gfar_gcoalesce(struct net_device dev, struct ethtool_coalesce cvals)
1da177e4 LT	284	{
1da177e4 LT	285	struct gfar_private *priv = netdev_priv(dev);
0bbaf069 KG	286
	287	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
	288	return -EOPNOTSUPP;
1da177e4	289
bb40dcbb AF	290	if (NULL == priv->phydev)
	291	return -ENODEV;
	292
1da177e4 LT	293	cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, priv->rxtime);
	294	cvals->rx_max_coalesced_frames = priv->rxcount;
	295
	296	cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, priv->txtime);
	297	cvals->tx_max_coalesced_frames = priv->txcount;
	298
	299	cvals->use_adaptive_rx_coalesce = 0;
	300	cvals->use_adaptive_tx_coalesce = 0;
	301
	302	cvals->pkt_rate_low = 0;
	303	cvals->rx_coalesce_usecs_low = 0;
	304	cvals->rx_max_coalesced_frames_low = 0;
	305	cvals->tx_coalesce_usecs_low = 0;
	306	cvals->tx_max_coalesced_frames_low = 0;
	307
	308	/* When the packet rate is below pkt_rate_high but above
	309	* pkt_rate_low (both measured in packets per second) the
	310	* normal {rx,tx}_* coalescing parameters are used.
	311	*/
	312
	313	/* When the packet rate is (measured in packets per second)
	314	* is above pkt_rate_high, the {rx,tx}_*_high parameters are
	315	* used.
	316	*/
	317	cvals->pkt_rate_high = 0;
	318	cvals->rx_coalesce_usecs_high = 0;
	319	cvals->rx_max_coalesced_frames_high = 0;
	320	cvals->tx_coalesce_usecs_high = 0;
	321	cvals->tx_max_coalesced_frames_high = 0;
	322
	323	/* How often to do adaptive coalescing packet rate sampling,
	324	* measured in seconds. Must not be zero.
	325	*/
	326	cvals->rate_sample_interval = 0;
	327
	328	return 0;
	329	}
	330
	331	/* Change the coalescing values.
	332	* Both cvals->_usecs and cvals->_frames have to be > 0
	333	* in order for coalescing to be active
	334	*/
0bbaf069	335	static int gfar_scoalesce(struct net_device dev, struct ethtool_coalesce cvals)
1da177e4 LT	336	{
	337	struct gfar_private *priv = netdev_priv(dev);
	338
0bbaf069 KG	339	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
	340	return -EOPNOTSUPP;
	341
1da177e4 LT	342	/* Set up rx coalescing */
	343	if ((cvals->rx_coalesce_usecs == 0) \|\|
	344	(cvals->rx_max_coalesced_frames == 0))
	345	priv->rxcoalescing = 0;
	346	else
	347	priv->rxcoalescing = 1;
	348
bb40dcbb AF	349	if (NULL == priv->phydev)
	350	return -ENODEV;
	351
	352	/* Check the bounds of the values */
	353	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
	354	pr_info("Coalescing is limited to %d microseconds\n",
	355	GFAR_MAX_COAL_USECS);
	356	return -EINVAL;
	357	}
	358
	359	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
	360	pr_info("Coalescing is limited to %d frames\n",
	361	GFAR_MAX_COAL_FRAMES);
	362	return -EINVAL;
	363	}
	364
1da177e4 LT	365	priv->rxtime = gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs);
	366	priv->rxcount = cvals->rx_max_coalesced_frames;
	367
	368	/* Set up tx coalescing */
	369	if ((cvals->tx_coalesce_usecs == 0) \|\|
	370	(cvals->tx_max_coalesced_frames == 0))
	371	priv->txcoalescing = 0;
	372	else
	373	priv->txcoalescing = 1;
	374
bb40dcbb AF	375	/* Check the bounds of the values */
	376	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
	377	pr_info("Coalescing is limited to %d microseconds\n",
	378	GFAR_MAX_COAL_USECS);
	379	return -EINVAL;
	380	}
	381
	382	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
	383	pr_info("Coalescing is limited to %d frames\n",
	384	GFAR_MAX_COAL_FRAMES);
	385	return -EINVAL;
	386	}
	387
1da177e4 LT	388	priv->txtime = gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs);
	389	priv->txcount = cvals->tx_max_coalesced_frames;
	390
	391	if (priv->rxcoalescing)
	392	gfar_write(&priv->regs->rxic,
	393	mk_ic_value(priv->rxcount, priv->rxtime));
	394	else
	395	gfar_write(&priv->regs->rxic, 0);
	396
	397	if (priv->txcoalescing)
	398	gfar_write(&priv->regs->txic,
	399	mk_ic_value(priv->txcount, priv->txtime));
	400	else
	401	gfar_write(&priv->regs->txic, 0);
	402
	403	return 0;
	404	}
	405
	406	/* Fills in rvals with the current ring parameters. Currently,
	407	* rx, rx_mini, and rx_jumbo rings are the same size, as mini and
	408	* jumbo are ignored by the driver */
0bbaf069	409	static void gfar_gringparam(struct net_device dev, struct ethtool_ringparam rvals)
1da177e4 LT	410	{
	411	struct gfar_private *priv = netdev_priv(dev);
	412
	413	rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
	414	rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
	415	rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
	416	rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
	417
	418	/* Values changeable by the user. The valid values are
	419	* in the range 1 to the "*_max_pending" counterpart above.
	420	*/
	421	rvals->rx_pending = priv->rx_ring_size;
	422	rvals->rx_mini_pending = priv->rx_ring_size;
	423	rvals->rx_jumbo_pending = priv->rx_ring_size;
	424	rvals->tx_pending = priv->tx_ring_size;
	425	}
	426
	427	/* Change the current ring parameters, stopping the controller if
	428	* necessary so that we don't mess things up while we're in
	429	* motion. We wait for the ring to be clean before reallocating
	430	* the rings. */
0bbaf069	431	static int gfar_sringparam(struct net_device dev, struct ethtool_ringparam rvals)
1da177e4	432	{
1da177e4 LT	433	struct gfar_private *priv = netdev_priv(dev);
	434	int err = 0;
	435
	436	if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
	437	return -EINVAL;
	438
	439	if (!is_power_of_2(rvals->rx_pending)) {
	440	printk("%s: Ring sizes must be a power of 2\n",
	441	dev->name);
	442	return -EINVAL;
	443	}
	444
	445	if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
	446	return -EINVAL;
	447
	448	if (!is_power_of_2(rvals->tx_pending)) {
	449	printk("%s: Ring sizes must be a power of 2\n",
	450	dev->name);
	451	return -EINVAL;
	452	}
	453
0bbaf069 KG	454	if (dev->flags & IFF_UP) {
0bbaf069 KG	455	unsigned long flags;
1da177e4	456
0bbaf069 KG	457	/* Halt TX and RX, and process the frames which
	458	* have already been received */
	459	spin_lock_irqsave(&priv->lock, flags);
	460	gfar_halt(dev);
	461	gfar_clean_rx_ring(dev, priv->rx_ring_size);
	462	spin_unlock_irqrestore(&priv->lock, flags);
1da177e4	463
0bbaf069 KG	464	/* Now we take down the rings to rebuild them */
	465	stop_gfar(dev);
	466	}
1da177e4	467
0bbaf069 KG	468	/* Change the size */
	469	priv->rx_ring_size = rvals->rx_pending;
	470	priv->tx_ring_size = rvals->tx_pending;
1da177e4	471
0bbaf069 KG	472	/* Rebuild the rings with the new size */
	473	if (dev->flags & IFF_UP)
	474	err = startup_gfar(dev);
1da177e4	475
0bbaf069 KG	476	return err;
0bbaf069 KG	477	}
1da177e4	478
0bbaf069 KG	479	static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
	480	{
	481	struct gfar_private *priv = netdev_priv(dev);
	482	int err = 0;
1da177e4	483
0bbaf069 KG	484	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	485	return -EOPNOTSUPP;
	486
	487	if (dev->flags & IFF_UP) {
	488	unsigned long flags;
	489
	490	/* Halt TX and RX, and process the frames which
	491	* have already been received */
	492	spin_lock_irqsave(&priv->lock, flags);
	493	gfar_halt(dev);
	494	gfar_clean_rx_ring(dev, priv->rx_ring_size);
	495	spin_unlock_irqrestore(&priv->lock, flags);
	496
	497	/* Now we take down the rings to rebuild them */
1da177e4 LT	498	stop_gfar(dev);
	499	}
	500
0bbaf069	501	priv->rx_csum_enable = data;
1da177e4 LT	502
	503	if (dev->flags & IFF_UP)
	504	err = startup_gfar(dev);
	505
	506	return err;
	507	}
	508
0bbaf069 KG	509	static uint32_t gfar_get_rx_csum(struct net_device *dev)
	510	{
	511	struct gfar_private *priv = netdev_priv(dev);
	512
	513	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	514	return 0;
	515
	516	return priv->rx_csum_enable;
	517	}
	518
	519	static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
	520	{
	521	unsigned long flags;
	522	struct gfar_private *priv = netdev_priv(dev);
	523
	524	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	525	return -EOPNOTSUPP;
	526
	527	spin_lock_irqsave(&priv->lock, flags);
	528	gfar_halt(dev);
	529
	530	if (data)
	531	dev->features \|= NETIF_F_IP_CSUM;
	532	else
	533	dev->features &= ~NETIF_F_IP_CSUM;
	534
	535	gfar_start(dev);
	536	spin_unlock_irqrestore(&priv->lock, flags);
	537
	538	return 0;
	539	}
	540
	541	static uint32_t gfar_get_tx_csum(struct net_device *dev)
	542	{
	543	struct gfar_private *priv = netdev_priv(dev);
	544
	545	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	546	return 0;
	547
	548	return (dev->features & NETIF_F_IP_CSUM) != 0;
	549	}
	550
	551	static uint32_t gfar_get_msglevel(struct net_device *dev)
	552	{
	553	struct gfar_private *priv = netdev_priv(dev);
	554	return priv->msg_enable;
	555	}
	556
	557	static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
	558	{
	559	struct gfar_private *priv = netdev_priv(dev);
	560	priv->msg_enable = data;
	561	}
	562
	563
1da177e4 LT	564	struct ethtool_ops gfar_ethtool_ops = {
1da177e4 LT	565	.get_settings = gfar_gsettings,
bb40dcbb	566	.set_settings = gfar_ssettings,
1da177e4 LT	567	.get_drvinfo = gfar_gdrvinfo,
	568	.get_regs_len = gfar_reglen,
	569	.get_regs = gfar_get_regs,
	570	.get_link = ethtool_op_get_link,
	571	.get_coalesce = gfar_gcoalesce,
	572	.set_coalesce = gfar_scoalesce,
	573	.get_ringparam = gfar_gringparam,
	574	.set_ringparam = gfar_sringparam,
	575	.get_strings = gfar_gstrings,
	576	.get_stats_count = gfar_stats_count,
	577	.get_ethtool_stats = gfar_fill_stats,
0bbaf069 KG	578	.get_rx_csum = gfar_get_rx_csum,
	579	.get_tx_csum = gfar_get_tx_csum,
	580	.set_rx_csum = gfar_set_rx_csum,
	581	.set_tx_csum = gfar_set_tx_csum,
	582	.get_msglevel = gfar_get_msglevel,
	583	.set_msglevel = gfar_set_msglevel,
1da177e4	584	};