[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
 *
 *  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/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/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 __iomem *rmon = (u32 __iomem *) & priv->regs->rmon;
		struct gfar_stats *stats = (struct gfar_stats *) buf;

		for (i = 0; i < GFAR_RMON_LEN; i++)
			stats->rmon[i] = (u64) gfar_read(&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 __iomem *theregs = (u32 __iomem *) priv->regs;
	u32 *buf = (u32 *) regbuf;

	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
		buf[i] = gfar_read(&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->txlock, flags);
		spin_lock(&priv->rxlock);

		gfar_halt(dev);
		gfar_clean_rx_ring(dev, priv->rx_ring_size);

		spin_unlock(&priv->rxlock);
		spin_unlock_irqrestore(&priv->txlock, 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->txlock, flags);
		spin_lock(&priv->rxlock);

		gfar_halt(dev);
		gfar_clean_rx_ring(dev, priv->rx_ring_size);

		spin_unlock(&priv->rxlock);
		spin_unlock_irqrestore(&priv->txlock, 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->txlock, 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->txlock, 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;
}


const 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
4c8d3d99	9	* Maintainer: Kumar Gala
1da177e4 LT	10	*
	11	* Copyright (c) 2003,2004 Freescale Semiconductor, Inc.
	12	*
6aa20a22 JG	13	* This software may be used and distributed according to
6aa20a22 JG	14	* the terms of the GNU Public License, Version 2, incorporated herein
1da177e4 LT	15	* by reference.
	16	*/
	17
1da177e4 LT	18	#include <linux/kernel.h>
	19	#include <linux/sched.h>
	20	#include <linux/string.h>
	21	#include <linux/errno.h>
	22	#include <linux/slab.h>
	23	#include <linux/interrupt.h>
	24	#include <linux/init.h>
	25	#include <linux/delay.h>
	26	#include <linux/netdevice.h>
	27	#include <linux/etherdevice.h>
	28	#include <linux/skbuff.h>
	29	#include <linux/spinlock.h>
	30	#include <linux/mm.h>
	31
	32	#include <asm/io.h>
	33	#include <asm/irq.h>
	34	#include <asm/uaccess.h>
	35	#include <linux/module.h>
1da177e4 LT	36	#include <linux/crc32.h>
	37	#include <asm/types.h>
	38	#include <asm/uaccess.h>
	39	#include <linux/ethtool.h>
bb40dcbb AF	40	#include <linux/mii.h>
bb40dcbb AF	41	#include <linux/phy.h>
1da177e4 LT	42
	43	#include "gianfar.h"
	44
	45	#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0))
	46
0bbaf069 KG	47	extern void gfar_start(struct net_device *dev);
0bbaf069 KG	48	extern int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);
1da177e4	49
bb40dcbb AF	50	#define GFAR_MAX_COAL_USECS 0xffff
bb40dcbb AF	51	#define GFAR_MAX_COAL_FRAMES 0xff
0bbaf069	52	static void gfar_fill_stats(struct net_device dev, struct ethtool_stats dummy,
1da177e4	53	u64 * buf);
0bbaf069 KG	54	static void gfar_gstrings(struct net_device dev, u32 stringset, u8 buf);
	55	static int gfar_gcoalesce(struct net_device dev, struct ethtool_coalesce cvals);
	56	static int gfar_scoalesce(struct net_device dev, struct ethtool_coalesce cvals);
	57	static void gfar_gringparam(struct net_device dev, struct ethtool_ringparam rvals);
	58	static int gfar_sringparam(struct net_device dev, struct ethtool_ringparam rvals);
	59	static void gfar_gdrvinfo(struct net_device dev, struct ethtool_drvinfo drvinfo);
1da177e4 LT	60
	61	static char stat_gstrings[][ETH_GSTRING_LEN] = {
	62	"rx-dropped-by-kernel",
	63	"rx-large-frame-errors",
	64	"rx-short-frame-errors",
	65	"rx-non-octet-errors",
	66	"rx-crc-errors",
	67	"rx-overrun-errors",
	68	"rx-busy-errors",
	69	"rx-babbling-errors",
	70	"rx-truncated-frames",
	71	"ethernet-bus-error",
	72	"tx-babbling-errors",
	73	"tx-underrun-errors",
	74	"rx-skb-missing-errors",
	75	"tx-timeout-errors",
	76	"tx-rx-64-frames",
	77	"tx-rx-65-127-frames",
	78	"tx-rx-128-255-frames",
	79	"tx-rx-256-511-frames",
	80	"tx-rx-512-1023-frames",
	81	"tx-rx-1024-1518-frames",
	82	"tx-rx-1519-1522-good-vlan",
	83	"rx-bytes",
	84	"rx-packets",
	85	"rx-fcs-errors",
	86	"receive-multicast-packet",
	87	"receive-broadcast-packet",
	88	"rx-control-frame-packets",
	89	"rx-pause-frame-packets",
	90	"rx-unknown-op-code",
	91	"rx-alignment-error",
	92	"rx-frame-length-error",
	93	"rx-code-error",
	94	"rx-carrier-sense-error",
	95	"rx-undersize-packets",
	96	"rx-oversize-packets",
	97	"rx-fragmented-frames",
	98	"rx-jabber-frames",
	99	"rx-dropped-frames",
	100	"tx-byte-counter",
	101	"tx-packets",
	102	"tx-multicast-packets",
	103	"tx-broadcast-packets",
	104	"tx-pause-control-frames",
	105	"tx-deferral-packets",
	106	"tx-excessive-deferral-packets",
	107	"tx-single-collision-packets",
	108	"tx-multiple-collision-packets",
	109	"tx-late-collision-packets",
	110	"tx-excessive-collision-packets",
	111	"tx-total-collision",
	112	"reserved",
	113	"tx-dropped-frames",
	114	"tx-jabber-frames",
	115	"tx-fcs-errors",
	116	"tx-control-frames",
	117	"tx-oversize-frames",
	118	"tx-undersize-frames",
	119	"tx-fragmented-frames",
	120	};
	121
0bbaf069 KG	122	/* Fill in a buffer with the strings which correspond to the
	123	* stats */
	124	static void gfar_gstrings(struct net_device dev, u32 stringset, u8 buf)
	125	{
	126	struct gfar_private *priv = netdev_priv(dev);
7f7f5316	127
0bbaf069 KG	128	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
	129	memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
	130	else
	131	memcpy(buf, stat_gstrings,
	132	GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
	133	}
	134
1da177e4 LT	135	/* Fill in an array of 64-bit statistics from various sources.
	136	* This array will be appended to the end of the ethtool_stats
	137	* structure, and returned to user space
	138	*/
0bbaf069	139	static void gfar_fill_stats(struct net_device dev, struct ethtool_stats dummy, u64 * buf)
1da177e4 LT	140	{
	141	int i;
	142	struct gfar_private *priv = netdev_priv(dev);
1da177e4	143	u64 extra = (u64 ) & priv->extra_stats;
1da177e4	144
0bbaf069	145	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
cc8c6e37	146	u32 __iomem rmon = (u32 __iomem ) & priv->regs->rmon;
0bbaf069	147	struct gfar_stats stats = (struct gfar_stats ) buf;
1da177e4	148
0bbaf069	149	for (i = 0; i < GFAR_RMON_LEN; i++)
cc8c6e37	150	stats->rmon[i] = (u64) gfar_read(&rmon[i]);
1da177e4	151
0bbaf069 KG	152	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
	153	stats->extra[i] = extra[i];
	154	} else
	155	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
	156	buf[i] = extra[i];
1da177e4 LT	157	}
1da177e4 LT	158
0bbaf069 KG	159	/* Returns the number of stats (and their corresponding strings) */
0bbaf069 KG	160	static int gfar_stats_count(struct net_device *dev)
1da177e4	161	{
1da177e4	162	struct gfar_private *priv = netdev_priv(dev);
1da177e4	163
0bbaf069 KG	164	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
	165	return GFAR_STATS_LEN;
	166	else
	167	return GFAR_EXTRA_STATS_LEN;
1da177e4 LT	168	}
1da177e4 LT	169
1da177e4	170	/* Fills in the drvinfo structure with some basic info */
0bbaf069	171	static void gfar_gdrvinfo(struct net_device *dev, struct
1da177e4 LT	172	ethtool_drvinfo *drvinfo)
	173	{
	174	strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
	175	strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
	176	strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
	177	strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
	178	drvinfo->n_stats = GFAR_STATS_LEN;
	179	drvinfo->testinfo_len = 0;
	180	drvinfo->regdump_len = 0;
	181	drvinfo->eedump_len = 0;
	182	}
	183
bb40dcbb AF	184
	185	static int gfar_ssettings(struct net_device dev, struct ethtool_cmd cmd)
	186	{
	187	struct gfar_private *priv = netdev_priv(dev);
	188	struct phy_device *phydev = priv->phydev;
	189
	190	if (NULL == phydev)
	191	return -ENODEV;
	192
	193	return phy_ethtool_sset(phydev, cmd);
	194	}
	195
	196
1da177e4	197	/* Return the current settings in the ethtool_cmd structure */
0bbaf069	198	static int gfar_gsettings(struct net_device dev, struct ethtool_cmd cmd)
1da177e4 LT	199	{
1da177e4 LT	200	struct gfar_private *priv = netdev_priv(dev);
bb40dcbb AF	201	struct phy_device *phydev = priv->phydev;
	202
	203	if (NULL == phydev)
	204	return -ENODEV;
6aa20a22	205
1da177e4 LT	206	cmd->maxtxpkt = priv->txcount;
	207	cmd->maxrxpkt = priv->rxcount;
	208
bb40dcbb	209	return phy_ethtool_gset(phydev, cmd);
1da177e4 LT	210	}
	211
	212	/* Return the length of the register structure */
0bbaf069	213	static int gfar_reglen(struct net_device *dev)
1da177e4 LT	214	{
	215	return sizeof (struct gfar);
	216	}
	217
	218	/* Return a dump of the GFAR register space */
0bbaf069	219	static void gfar_get_regs(struct net_device dev, struct ethtool_regs regs, void *regbuf)
1da177e4 LT	220	{
	221	int i;
	222	struct gfar_private *priv = netdev_priv(dev);
cc8c6e37	223	u32 __iomem theregs = (u32 __iomem ) priv->regs;
1da177e4 LT	224	u32 buf = (u32 ) regbuf;
	225
	226	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
cc8c6e37	227	buf[i] = gfar_read(&theregs[i]);
1da177e4 LT	228	}
1da177e4 LT	229
1da177e4 LT	230	/* Convert microseconds to ethernet clock ticks, which changes
	231	* depending on what speed the controller is running at */
	232	static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
	233	{
	234	unsigned int count;
	235
	236	/* The timer is different, depending on the interface speed */
bb40dcbb AF	237	switch (priv->phydev->speed) {
bb40dcbb AF	238	case SPEED_1000:
1da177e4 LT	239	count = GFAR_GBIT_TIME;
1da177e4 LT	240	break;
bb40dcbb	241	case SPEED_100:
1da177e4 LT	242	count = GFAR_100_TIME;
1da177e4 LT	243	break;
bb40dcbb	244	case SPEED_10:
1da177e4 LT	245	default:
	246	count = GFAR_10_TIME;
	247	break;
	248	}
	249
	250	/* Make sure we return a number greater than 0
	251	* if usecs > 0 */
	252	return ((usecs * 1000 + count - 1) / count);
	253	}
	254
	255	/* Convert ethernet clock ticks to microseconds */
	256	static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
	257	{
	258	unsigned int count;
	259
	260	/* The timer is different, depending on the interface speed */
bb40dcbb AF	261	switch (priv->phydev->speed) {
bb40dcbb AF	262	case SPEED_1000:
1da177e4 LT	263	count = GFAR_GBIT_TIME;
1da177e4 LT	264	break;
bb40dcbb	265	case SPEED_100:
1da177e4 LT	266	count = GFAR_100_TIME;
1da177e4 LT	267	break;
bb40dcbb	268	case SPEED_10:
1da177e4 LT	269	default:
	270	count = GFAR_10_TIME;
	271	break;
	272	}
	273
	274	/* Make sure we return a number greater than 0 */
	275	/* if ticks is > 0 */
	276	return ((ticks * count) / 1000);
	277	}
	278
	279	/* Get the coalescing parameters, and put them in the cvals
	280	* structure. */
0bbaf069	281	static int gfar_gcoalesce(struct net_device dev, struct ethtool_coalesce cvals)
1da177e4 LT	282	{
1da177e4 LT	283	struct gfar_private *priv = netdev_priv(dev);
6aa20a22	284
0bbaf069 KG	285	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
0bbaf069 KG	286	return -EOPNOTSUPP;
1da177e4	287
bb40dcbb AF	288	if (NULL == priv->phydev)
	289	return -ENODEV;
	290
1da177e4 LT	291	cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, priv->rxtime);
	292	cvals->rx_max_coalesced_frames = priv->rxcount;
	293
	294	cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, priv->txtime);
	295	cvals->tx_max_coalesced_frames = priv->txcount;
	296
	297	cvals->use_adaptive_rx_coalesce = 0;
	298	cvals->use_adaptive_tx_coalesce = 0;
	299
	300	cvals->pkt_rate_low = 0;
	301	cvals->rx_coalesce_usecs_low = 0;
	302	cvals->rx_max_coalesced_frames_low = 0;
	303	cvals->tx_coalesce_usecs_low = 0;
	304	cvals->tx_max_coalesced_frames_low = 0;
	305
	306	/* When the packet rate is below pkt_rate_high but above
	307	* pkt_rate_low (both measured in packets per second) the
	308	* normal {rx,tx}_* coalescing parameters are used.
	309	*/
	310
	311	/* When the packet rate is (measured in packets per second)
	312	* is above pkt_rate_high, the {rx,tx}_*_high parameters are
	313	* used.
	314	*/
	315	cvals->pkt_rate_high = 0;
	316	cvals->rx_coalesce_usecs_high = 0;
	317	cvals->rx_max_coalesced_frames_high = 0;
	318	cvals->tx_coalesce_usecs_high = 0;
	319	cvals->tx_max_coalesced_frames_high = 0;
	320
	321	/* How often to do adaptive coalescing packet rate sampling,
	322	* measured in seconds. Must not be zero.
	323	*/
	324	cvals->rate_sample_interval = 0;
	325
	326	return 0;
	327	}
	328
	329	/* Change the coalescing values.
	330	* Both cvals->_usecs and cvals->_frames have to be > 0
	331	* in order for coalescing to be active
	332	*/
0bbaf069	333	static int gfar_scoalesce(struct net_device dev, struct ethtool_coalesce cvals)
1da177e4 LT	334	{
	335	struct gfar_private *priv = netdev_priv(dev);
	336
0bbaf069 KG	337	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
	338	return -EOPNOTSUPP;
	339
1da177e4 LT	340	/* Set up rx coalescing */
	341	if ((cvals->rx_coalesce_usecs == 0) \|\|
	342	(cvals->rx_max_coalesced_frames == 0))
	343	priv->rxcoalescing = 0;
	344	else
	345	priv->rxcoalescing = 1;
	346
bb40dcbb AF	347	if (NULL == priv->phydev)
	348	return -ENODEV;
	349
	350	/* Check the bounds of the values */
	351	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
	352	pr_info("Coalescing is limited to %d microseconds\n",
	353	GFAR_MAX_COAL_USECS);
	354	return -EINVAL;
	355	}
	356
	357	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
	358	pr_info("Coalescing is limited to %d frames\n",
	359	GFAR_MAX_COAL_FRAMES);
	360	return -EINVAL;
	361	}
	362
1da177e4 LT	363	priv->rxtime = gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs);
	364	priv->rxcount = cvals->rx_max_coalesced_frames;
	365
	366	/* Set up tx coalescing */
	367	if ((cvals->tx_coalesce_usecs == 0) \|\|
	368	(cvals->tx_max_coalesced_frames == 0))
	369	priv->txcoalescing = 0;
	370	else
	371	priv->txcoalescing = 1;
	372
bb40dcbb AF	373	/* Check the bounds of the values */
	374	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
	375	pr_info("Coalescing is limited to %d microseconds\n",
	376	GFAR_MAX_COAL_USECS);
	377	return -EINVAL;
	378	}
	379
	380	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
	381	pr_info("Coalescing is limited to %d frames\n",
	382	GFAR_MAX_COAL_FRAMES);
	383	return -EINVAL;
	384	}
	385
1da177e4 LT	386	priv->txtime = gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs);
	387	priv->txcount = cvals->tx_max_coalesced_frames;
	388
	389	if (priv->rxcoalescing)
	390	gfar_write(&priv->regs->rxic,
	391	mk_ic_value(priv->rxcount, priv->rxtime));
	392	else
	393	gfar_write(&priv->regs->rxic, 0);
	394
	395	if (priv->txcoalescing)
	396	gfar_write(&priv->regs->txic,
	397	mk_ic_value(priv->txcount, priv->txtime));
	398	else
	399	gfar_write(&priv->regs->txic, 0);
	400
	401	return 0;
	402	}
	403
	404	/* Fills in rvals with the current ring parameters. Currently,
	405	* rx, rx_mini, and rx_jumbo rings are the same size, as mini and
	406	* jumbo are ignored by the driver */
0bbaf069	407	static void gfar_gringparam(struct net_device dev, struct ethtool_ringparam rvals)
1da177e4 LT	408	{
	409	struct gfar_private *priv = netdev_priv(dev);
	410
	411	rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
	412	rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
	413	rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
	414	rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
	415
	416	/* Values changeable by the user. The valid values are
	417	* in the range 1 to the "*_max_pending" counterpart above.
	418	*/
	419	rvals->rx_pending = priv->rx_ring_size;
	420	rvals->rx_mini_pending = priv->rx_ring_size;
	421	rvals->rx_jumbo_pending = priv->rx_ring_size;
	422	rvals->tx_pending = priv->tx_ring_size;
	423	}
	424
	425	/* Change the current ring parameters, stopping the controller if
	426	* necessary so that we don't mess things up while we're in
	427	* motion. We wait for the ring to be clean before reallocating
	428	* the rings. */
0bbaf069	429	static int gfar_sringparam(struct net_device dev, struct ethtool_ringparam rvals)
1da177e4	430	{
1da177e4 LT	431	struct gfar_private *priv = netdev_priv(dev);
	432	int err = 0;
	433
	434	if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
	435	return -EINVAL;
	436
	437	if (!is_power_of_2(rvals->rx_pending)) {
	438	printk("%s: Ring sizes must be a power of 2\n",
	439	dev->name);
	440	return -EINVAL;
	441	}
	442
	443	if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
	444	return -EINVAL;
	445
	446	if (!is_power_of_2(rvals->tx_pending)) {
	447	printk("%s: Ring sizes must be a power of 2\n",
	448	dev->name);
	449	return -EINVAL;
	450	}
	451
0bbaf069 KG	452	if (dev->flags & IFF_UP) {
0bbaf069 KG	453	unsigned long flags;
1da177e4	454
0bbaf069 KG	455	/* Halt TX and RX, and process the frames which
0bbaf069 KG	456	* have already been received */
fef6108d AF	457	spin_lock_irqsave(&priv->txlock, flags);
	458	spin_lock(&priv->rxlock);
	459
0bbaf069 KG	460	gfar_halt(dev);
0bbaf069 KG	461	gfar_clean_rx_ring(dev, priv->rx_ring_size);
fef6108d AF	462
	463	spin_unlock(&priv->rxlock);
	464	spin_unlock_irqrestore(&priv->txlock, flags);
1da177e4	465
0bbaf069 KG	466	/* Now we take down the rings to rebuild them */
	467	stop_gfar(dev);
	468	}
1da177e4	469
0bbaf069 KG	470	/* Change the size */
	471	priv->rx_ring_size = rvals->rx_pending;
	472	priv->tx_ring_size = rvals->tx_pending;
1da177e4	473
0bbaf069 KG	474	/* Rebuild the rings with the new size */
	475	if (dev->flags & IFF_UP)
	476	err = startup_gfar(dev);
1da177e4	477
0bbaf069 KG	478	return err;
0bbaf069 KG	479	}
1da177e4	480
0bbaf069 KG	481	static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
	482	{
	483	struct gfar_private *priv = netdev_priv(dev);
	484	int err = 0;
1da177e4	485
0bbaf069 KG	486	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	487	return -EOPNOTSUPP;
	488
	489	if (dev->flags & IFF_UP) {
	490	unsigned long flags;
	491
	492	/* Halt TX and RX, and process the frames which
	493	* have already been received */
fef6108d AF	494	spin_lock_irqsave(&priv->txlock, flags);
	495	spin_lock(&priv->rxlock);
	496
0bbaf069 KG	497	gfar_halt(dev);
0bbaf069 KG	498	gfar_clean_rx_ring(dev, priv->rx_ring_size);
fef6108d AF	499
	500	spin_unlock(&priv->rxlock);
	501	spin_unlock_irqrestore(&priv->txlock, flags);
0bbaf069 KG	502
0bbaf069 KG	503	/* Now we take down the rings to rebuild them */
1da177e4 LT	504	stop_gfar(dev);
	505	}
	506
0bbaf069	507	priv->rx_csum_enable = data;
1da177e4 LT	508
	509	if (dev->flags & IFF_UP)
	510	err = startup_gfar(dev);
	511
	512	return err;
	513	}
	514
0bbaf069 KG	515	static uint32_t gfar_get_rx_csum(struct net_device *dev)
	516	{
	517	struct gfar_private *priv = netdev_priv(dev);
	518
	519	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	520	return 0;
	521
	522	return priv->rx_csum_enable;
	523	}
	524
	525	static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
	526	{
	527	unsigned long flags;
	528	struct gfar_private *priv = netdev_priv(dev);
	529
	530	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	531	return -EOPNOTSUPP;
	532
fef6108d	533	spin_lock_irqsave(&priv->txlock, flags);
0bbaf069 KG	534	gfar_halt(dev);
	535
	536	if (data)
	537	dev->features \|= NETIF_F_IP_CSUM;
	538	else
	539	dev->features &= ~NETIF_F_IP_CSUM;
	540
	541	gfar_start(dev);
fef6108d	542	spin_unlock_irqrestore(&priv->txlock, flags);
0bbaf069 KG	543
	544	return 0;
	545	}
	546
	547	static uint32_t gfar_get_tx_csum(struct net_device *dev)
	548	{
	549	struct gfar_private *priv = netdev_priv(dev);
	550
	551	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	552	return 0;
	553
	554	return (dev->features & NETIF_F_IP_CSUM) != 0;
	555	}
	556
	557	static uint32_t gfar_get_msglevel(struct net_device *dev)
6aa20a22	558	{
0bbaf069 KG	559	struct gfar_private *priv = netdev_priv(dev);
0bbaf069 KG	560	return priv->msg_enable;
6aa20a22 JG	561	}
6aa20a22 JG	562
0bbaf069	563	static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
6aa20a22	564	{
0bbaf069 KG	565	struct gfar_private *priv = netdev_priv(dev);
	566	priv->msg_enable = data;
	567	}
	568
	569
7282d491	570	const struct ethtool_ops gfar_ethtool_ops = {
1da177e4	571	.get_settings = gfar_gsettings,
bb40dcbb	572	.set_settings = gfar_ssettings,
1da177e4 LT	573	.get_drvinfo = gfar_gdrvinfo,
	574	.get_regs_len = gfar_reglen,
	575	.get_regs = gfar_get_regs,
	576	.get_link = ethtool_op_get_link,
	577	.get_coalesce = gfar_gcoalesce,
	578	.set_coalesce = gfar_scoalesce,
	579	.get_ringparam = gfar_gringparam,
	580	.set_ringparam = gfar_sringparam,
	581	.get_strings = gfar_gstrings,
	582	.get_stats_count = gfar_stats_count,
	583	.get_ethtool_stats = gfar_fill_stats,
0bbaf069 KG	584	.get_rx_csum = gfar_get_rx_csum,
	585	.get_tx_csum = gfar_get_tx_csum,
	586	.set_rx_csum = gfar_set_rx_csum,
	587	.set_tx_csum = gfar_set_tx_csum,
	588	.get_msglevel = gfar_get_msglevel,
	589	.set_msglevel = gfar_set_msglevel,
1da177e4	590	};