[net-next-2.6.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/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/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->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
4c8d3d99	9	* Maintainer: Kumar Gala
1da177e4 LT	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>
1da177e4 LT	37	#include <linux/crc32.h>
	38	#include <asm/types.h>
	39	#include <asm/uaccess.h>
	40	#include <linux/ethtool.h>
bb40dcbb AF	41	#include <linux/mii.h>
bb40dcbb AF	42	#include <linux/phy.h>
1da177e4 LT	43
	44	#include "gianfar.h"
	45
	46	#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0))
	47
0bbaf069 KG	48	extern void gfar_start(struct net_device *dev);
0bbaf069 KG	49	extern int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);
1da177e4	50
bb40dcbb AF	51	#define GFAR_MAX_COAL_USECS 0xffff
bb40dcbb AF	52	#define GFAR_MAX_COAL_FRAMES 0xff
0bbaf069	53	static void gfar_fill_stats(struct net_device dev, struct ethtool_stats dummy,
1da177e4	54	u64 * buf);
0bbaf069 KG	55	static void gfar_gstrings(struct net_device dev, u32 stringset, u8 buf);
	56	static int gfar_gcoalesce(struct net_device dev, struct ethtool_coalesce cvals);
	57	static int gfar_scoalesce(struct net_device dev, struct ethtool_coalesce cvals);
	58	static void gfar_gringparam(struct net_device dev, struct ethtool_ringparam rvals);
	59	static int gfar_sringparam(struct net_device dev, struct ethtool_ringparam rvals);
	60	static void gfar_gdrvinfo(struct net_device dev, struct ethtool_drvinfo drvinfo);
1da177e4 LT	61
	62	static char stat_gstrings[][ETH_GSTRING_LEN] = {
	63	"rx-dropped-by-kernel",
	64	"rx-large-frame-errors",
	65	"rx-short-frame-errors",
	66	"rx-non-octet-errors",
	67	"rx-crc-errors",
	68	"rx-overrun-errors",
	69	"rx-busy-errors",
	70	"rx-babbling-errors",
	71	"rx-truncated-frames",
	72	"ethernet-bus-error",
	73	"tx-babbling-errors",
	74	"tx-underrun-errors",
	75	"rx-skb-missing-errors",
	76	"tx-timeout-errors",
	77	"tx-rx-64-frames",
	78	"tx-rx-65-127-frames",
	79	"tx-rx-128-255-frames",
	80	"tx-rx-256-511-frames",
	81	"tx-rx-512-1023-frames",
	82	"tx-rx-1024-1518-frames",
	83	"tx-rx-1519-1522-good-vlan",
	84	"rx-bytes",
	85	"rx-packets",
	86	"rx-fcs-errors",
	87	"receive-multicast-packet",
	88	"receive-broadcast-packet",
	89	"rx-control-frame-packets",
	90	"rx-pause-frame-packets",
	91	"rx-unknown-op-code",
	92	"rx-alignment-error",
	93	"rx-frame-length-error",
	94	"rx-code-error",
	95	"rx-carrier-sense-error",
	96	"rx-undersize-packets",
	97	"rx-oversize-packets",
	98	"rx-fragmented-frames",
	99	"rx-jabber-frames",
	100	"rx-dropped-frames",
	101	"tx-byte-counter",
	102	"tx-packets",
	103	"tx-multicast-packets",
	104	"tx-broadcast-packets",
	105	"tx-pause-control-frames",
	106	"tx-deferral-packets",
	107	"tx-excessive-deferral-packets",
	108	"tx-single-collision-packets",
	109	"tx-multiple-collision-packets",
	110	"tx-late-collision-packets",
	111	"tx-excessive-collision-packets",
	112	"tx-total-collision",
	113	"reserved",
	114	"tx-dropped-frames",
	115	"tx-jabber-frames",
	116	"tx-fcs-errors",
	117	"tx-control-frames",
	118	"tx-oversize-frames",
	119	"tx-undersize-frames",
	120	"tx-fragmented-frames",
	121	};
	122
0bbaf069 KG	123	/* Fill in a buffer with the strings which correspond to the
	124	* stats */
	125	static void gfar_gstrings(struct net_device dev, u32 stringset, u8 buf)
	126	{
	127	struct gfar_private *priv = netdev_priv(dev);
7f7f5316	128
0bbaf069 KG	129	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
	130	memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
	131	else
	132	memcpy(buf, stat_gstrings,
	133	GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
	134	}
	135
1da177e4 LT	136	/* Fill in an array of 64-bit statistics from various sources.
	137	* This array will be appended to the end of the ethtool_stats
	138	* structure, and returned to user space
	139	*/
0bbaf069	140	static void gfar_fill_stats(struct net_device dev, struct ethtool_stats dummy, u64 * buf)
1da177e4 LT	141	{
	142	int i;
	143	struct gfar_private *priv = netdev_priv(dev);
1da177e4	144	u64 extra = (u64 ) & priv->extra_stats;
1da177e4	145
0bbaf069	146	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
cc8c6e37	147	u32 __iomem rmon = (u32 __iomem ) & priv->regs->rmon;
0bbaf069	148	struct gfar_stats stats = (struct gfar_stats ) buf;
1da177e4	149
0bbaf069	150	for (i = 0; i < GFAR_RMON_LEN; i++)
cc8c6e37	151	stats->rmon[i] = (u64) gfar_read(&rmon[i]);
1da177e4	152
0bbaf069 KG	153	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
	154	stats->extra[i] = extra[i];
	155	} else
	156	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
	157	buf[i] = extra[i];
1da177e4 LT	158	}
1da177e4 LT	159
0bbaf069 KG	160	/* Returns the number of stats (and their corresponding strings) */
0bbaf069 KG	161	static int gfar_stats_count(struct net_device *dev)
1da177e4	162	{
1da177e4	163	struct gfar_private *priv = netdev_priv(dev);
1da177e4	164
0bbaf069 KG	165	if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
	166	return GFAR_STATS_LEN;
	167	else
	168	return GFAR_EXTRA_STATS_LEN;
1da177e4 LT	169	}
1da177e4 LT	170
1da177e4	171	/* Fills in the drvinfo structure with some basic info */
0bbaf069	172	static void gfar_gdrvinfo(struct net_device *dev, struct
1da177e4 LT	173	ethtool_drvinfo *drvinfo)
	174	{
	175	strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
	176	strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
	177	strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
	178	strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
	179	drvinfo->n_stats = GFAR_STATS_LEN;
	180	drvinfo->testinfo_len = 0;
	181	drvinfo->regdump_len = 0;
	182	drvinfo->eedump_len = 0;
	183	}
	184
bb40dcbb AF	185
	186	static int gfar_ssettings(struct net_device dev, struct ethtool_cmd cmd)
	187	{
	188	struct gfar_private *priv = netdev_priv(dev);
	189	struct phy_device *phydev = priv->phydev;
	190
	191	if (NULL == phydev)
	192	return -ENODEV;
	193
	194	return phy_ethtool_sset(phydev, cmd);
	195	}
	196
	197
1da177e4	198	/* Return the current settings in the ethtool_cmd structure */
0bbaf069	199	static int gfar_gsettings(struct net_device dev, struct ethtool_cmd cmd)
1da177e4 LT	200	{
1da177e4 LT	201	struct gfar_private *priv = netdev_priv(dev);
bb40dcbb AF	202	struct phy_device *phydev = priv->phydev;
	203
	204	if (NULL == phydev)
	205	return -ENODEV;
	206
1da177e4 LT	207	cmd->maxtxpkt = priv->txcount;
	208	cmd->maxrxpkt = priv->rxcount;
	209
bb40dcbb	210	return phy_ethtool_gset(phydev, cmd);
1da177e4 LT	211	}
	212
	213	/* Return the length of the register structure */
0bbaf069	214	static int gfar_reglen(struct net_device *dev)
1da177e4 LT	215	{
	216	return sizeof (struct gfar);
	217	}
	218
	219	/* Return a dump of the GFAR register space */
0bbaf069	220	static void gfar_get_regs(struct net_device dev, struct ethtool_regs regs, void *regbuf)
1da177e4 LT	221	{
	222	int i;
	223	struct gfar_private *priv = netdev_priv(dev);
cc8c6e37	224	u32 __iomem theregs = (u32 __iomem ) priv->regs;
1da177e4 LT	225	u32 buf = (u32 ) regbuf;
	226
	227	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
cc8c6e37	228	buf[i] = gfar_read(&theregs[i]);
1da177e4 LT	229	}
1da177e4 LT	230
1da177e4 LT	231	/* Convert microseconds to ethernet clock ticks, which changes
	232	* depending on what speed the controller is running at */
	233	static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
	234	{
	235	unsigned int count;
	236
	237	/* The timer is different, depending on the interface speed */
bb40dcbb AF	238	switch (priv->phydev->speed) {
bb40dcbb AF	239	case SPEED_1000:
1da177e4 LT	240	count = GFAR_GBIT_TIME;
1da177e4 LT	241	break;
bb40dcbb	242	case SPEED_100:
1da177e4 LT	243	count = GFAR_100_TIME;
1da177e4 LT	244	break;
bb40dcbb	245	case SPEED_10:
1da177e4 LT	246	default:
	247	count = GFAR_10_TIME;
	248	break;
	249	}
	250
	251	/* Make sure we return a number greater than 0
	252	* if usecs > 0 */
	253	return ((usecs * 1000 + count - 1) / count);
	254	}
	255
	256	/* Convert ethernet clock ticks to microseconds */
	257	static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
	258	{
	259	unsigned int count;
	260
	261	/* The timer is different, depending on the interface speed */
bb40dcbb AF	262	switch (priv->phydev->speed) {
bb40dcbb AF	263	case SPEED_1000:
1da177e4 LT	264	count = GFAR_GBIT_TIME;
1da177e4 LT	265	break;
bb40dcbb	266	case SPEED_100:
1da177e4 LT	267	count = GFAR_100_TIME;
1da177e4 LT	268	break;
bb40dcbb	269	case SPEED_10:
1da177e4 LT	270	default:
	271	count = GFAR_10_TIME;
	272	break;
	273	}
	274
	275	/* Make sure we return a number greater than 0 */
	276	/* if ticks is > 0 */
	277	return ((ticks * count) / 1000);
	278	}
	279
	280	/* Get the coalescing parameters, and put them in the cvals
	281	* structure. */
0bbaf069	282	static int gfar_gcoalesce(struct net_device dev, struct ethtool_coalesce cvals)
1da177e4 LT	283	{
1da177e4 LT	284	struct gfar_private *priv = netdev_priv(dev);
0bbaf069 KG	285
	286	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
	287	return -EOPNOTSUPP;
1da177e4	288
bb40dcbb AF	289	if (NULL == priv->phydev)
	290	return -ENODEV;
	291
1da177e4 LT	292	cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, priv->rxtime);
	293	cvals->rx_max_coalesced_frames = priv->rxcount;
	294
	295	cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, priv->txtime);
	296	cvals->tx_max_coalesced_frames = priv->txcount;
	297
	298	cvals->use_adaptive_rx_coalesce = 0;
	299	cvals->use_adaptive_tx_coalesce = 0;
	300
	301	cvals->pkt_rate_low = 0;
	302	cvals->rx_coalesce_usecs_low = 0;
	303	cvals->rx_max_coalesced_frames_low = 0;
	304	cvals->tx_coalesce_usecs_low = 0;
	305	cvals->tx_max_coalesced_frames_low = 0;
	306
	307	/* When the packet rate is below pkt_rate_high but above
	308	* pkt_rate_low (both measured in packets per second) the
	309	* normal {rx,tx}_* coalescing parameters are used.
	310	*/
	311
	312	/* When the packet rate is (measured in packets per second)
	313	* is above pkt_rate_high, the {rx,tx}_*_high parameters are
	314	* used.
	315	*/
	316	cvals->pkt_rate_high = 0;
	317	cvals->rx_coalesce_usecs_high = 0;
	318	cvals->rx_max_coalesced_frames_high = 0;
	319	cvals->tx_coalesce_usecs_high = 0;
	320	cvals->tx_max_coalesced_frames_high = 0;
	321
	322	/* How often to do adaptive coalescing packet rate sampling,
	323	* measured in seconds. Must not be zero.
	324	*/
	325	cvals->rate_sample_interval = 0;
	326
	327	return 0;
	328	}
	329
	330	/* Change the coalescing values.
	331	* Both cvals->_usecs and cvals->_frames have to be > 0
	332	* in order for coalescing to be active
	333	*/
0bbaf069	334	static int gfar_scoalesce(struct net_device dev, struct ethtool_coalesce cvals)
1da177e4 LT	335	{
	336	struct gfar_private *priv = netdev_priv(dev);
	337
0bbaf069 KG	338	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
	339	return -EOPNOTSUPP;
	340
1da177e4 LT	341	/* Set up rx coalescing */
	342	if ((cvals->rx_coalesce_usecs == 0) \|\|
	343	(cvals->rx_max_coalesced_frames == 0))
	344	priv->rxcoalescing = 0;
	345	else
	346	priv->rxcoalescing = 1;
	347
bb40dcbb AF	348	if (NULL == priv->phydev)
	349	return -ENODEV;
	350
	351	/* Check the bounds of the values */
	352	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
	353	pr_info("Coalescing is limited to %d microseconds\n",
	354	GFAR_MAX_COAL_USECS);
	355	return -EINVAL;
	356	}
	357
	358	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
	359	pr_info("Coalescing is limited to %d frames\n",
	360	GFAR_MAX_COAL_FRAMES);
	361	return -EINVAL;
	362	}
	363
1da177e4 LT	364	priv->rxtime = gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs);
	365	priv->rxcount = cvals->rx_max_coalesced_frames;
	366
	367	/* Set up tx coalescing */
	368	if ((cvals->tx_coalesce_usecs == 0) \|\|
	369	(cvals->tx_max_coalesced_frames == 0))
	370	priv->txcoalescing = 0;
	371	else
	372	priv->txcoalescing = 1;
	373
bb40dcbb AF	374	/* Check the bounds of the values */
	375	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
	376	pr_info("Coalescing is limited to %d microseconds\n",
	377	GFAR_MAX_COAL_USECS);
	378	return -EINVAL;
	379	}
	380
	381	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
	382	pr_info("Coalescing is limited to %d frames\n",
	383	GFAR_MAX_COAL_FRAMES);
	384	return -EINVAL;
	385	}
	386
1da177e4 LT	387	priv->txtime = gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs);
	388	priv->txcount = cvals->tx_max_coalesced_frames;
	389
	390	if (priv->rxcoalescing)
	391	gfar_write(&priv->regs->rxic,
	392	mk_ic_value(priv->rxcount, priv->rxtime));
	393	else
	394	gfar_write(&priv->regs->rxic, 0);
	395
	396	if (priv->txcoalescing)
	397	gfar_write(&priv->regs->txic,
	398	mk_ic_value(priv->txcount, priv->txtime));
	399	else
	400	gfar_write(&priv->regs->txic, 0);
	401
	402	return 0;
	403	}
	404
	405	/* Fills in rvals with the current ring parameters. Currently,
	406	* rx, rx_mini, and rx_jumbo rings are the same size, as mini and
	407	* jumbo are ignored by the driver */
0bbaf069	408	static void gfar_gringparam(struct net_device dev, struct ethtool_ringparam rvals)
1da177e4 LT	409	{
	410	struct gfar_private *priv = netdev_priv(dev);
	411
	412	rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
	413	rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
	414	rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
	415	rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
	416
	417	/* Values changeable by the user. The valid values are
	418	* in the range 1 to the "*_max_pending" counterpart above.
	419	*/
	420	rvals->rx_pending = priv->rx_ring_size;
	421	rvals->rx_mini_pending = priv->rx_ring_size;
	422	rvals->rx_jumbo_pending = priv->rx_ring_size;
	423	rvals->tx_pending = priv->tx_ring_size;
	424	}
	425
	426	/* Change the current ring parameters, stopping the controller if
	427	* necessary so that we don't mess things up while we're in
	428	* motion. We wait for the ring to be clean before reallocating
	429	* the rings. */
0bbaf069	430	static int gfar_sringparam(struct net_device dev, struct ethtool_ringparam rvals)
1da177e4	431	{
1da177e4 LT	432	struct gfar_private *priv = netdev_priv(dev);
	433	int err = 0;
	434
	435	if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
	436	return -EINVAL;
	437
	438	if (!is_power_of_2(rvals->rx_pending)) {
	439	printk("%s: Ring sizes must be a power of 2\n",
	440	dev->name);
	441	return -EINVAL;
	442	}
	443
	444	if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
	445	return -EINVAL;
	446
	447	if (!is_power_of_2(rvals->tx_pending)) {
	448	printk("%s: Ring sizes must be a power of 2\n",
	449	dev->name);
	450	return -EINVAL;
	451	}
	452
0bbaf069 KG	453	if (dev->flags & IFF_UP) {
0bbaf069 KG	454	unsigned long flags;
1da177e4	455
0bbaf069 KG	456	/* Halt TX and RX, and process the frames which
	457	* have already been received */
	458	spin_lock_irqsave(&priv->lock, flags);
	459	gfar_halt(dev);
	460	gfar_clean_rx_ring(dev, priv->rx_ring_size);
	461	spin_unlock_irqrestore(&priv->lock, flags);
1da177e4	462
0bbaf069 KG	463	/* Now we take down the rings to rebuild them */
	464	stop_gfar(dev);
	465	}
1da177e4	466
0bbaf069 KG	467	/* Change the size */
	468	priv->rx_ring_size = rvals->rx_pending;
	469	priv->tx_ring_size = rvals->tx_pending;
1da177e4	470
0bbaf069 KG	471	/* Rebuild the rings with the new size */
	472	if (dev->flags & IFF_UP)
	473	err = startup_gfar(dev);
1da177e4	474
0bbaf069 KG	475	return err;
0bbaf069 KG	476	}
1da177e4	477
0bbaf069 KG	478	static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
	479	{
	480	struct gfar_private *priv = netdev_priv(dev);
	481	int err = 0;
1da177e4	482
0bbaf069 KG	483	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	484	return -EOPNOTSUPP;
	485
	486	if (dev->flags & IFF_UP) {
	487	unsigned long flags;
	488
	489	/* Halt TX and RX, and process the frames which
	490	* have already been received */
	491	spin_lock_irqsave(&priv->lock, flags);
	492	gfar_halt(dev);
	493	gfar_clean_rx_ring(dev, priv->rx_ring_size);
	494	spin_unlock_irqrestore(&priv->lock, flags);
	495
	496	/* Now we take down the rings to rebuild them */
1da177e4 LT	497	stop_gfar(dev);
	498	}
	499
0bbaf069	500	priv->rx_csum_enable = data;
1da177e4 LT	501
	502	if (dev->flags & IFF_UP)
	503	err = startup_gfar(dev);
	504
	505	return err;
	506	}
	507
0bbaf069 KG	508	static uint32_t gfar_get_rx_csum(struct net_device *dev)
	509	{
	510	struct gfar_private *priv = netdev_priv(dev);
	511
	512	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	513	return 0;
	514
	515	return priv->rx_csum_enable;
	516	}
	517
	518	static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
	519	{
	520	unsigned long flags;
	521	struct gfar_private *priv = netdev_priv(dev);
	522
	523	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	524	return -EOPNOTSUPP;
	525
	526	spin_lock_irqsave(&priv->lock, flags);
	527	gfar_halt(dev);
	528
	529	if (data)
	530	dev->features \|= NETIF_F_IP_CSUM;
	531	else
	532	dev->features &= ~NETIF_F_IP_CSUM;
	533
	534	gfar_start(dev);
	535	spin_unlock_irqrestore(&priv->lock, flags);
	536
	537	return 0;
	538	}
	539
	540	static uint32_t gfar_get_tx_csum(struct net_device *dev)
	541	{
	542	struct gfar_private *priv = netdev_priv(dev);
	543
	544	if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
	545	return 0;
	546
	547	return (dev->features & NETIF_F_IP_CSUM) != 0;
	548	}
	549
	550	static uint32_t gfar_get_msglevel(struct net_device *dev)
	551	{
	552	struct gfar_private *priv = netdev_priv(dev);
	553	return priv->msg_enable;
	554	}
	555
	556	static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
	557	{
	558	struct gfar_private *priv = netdev_priv(dev);
	559	priv->msg_enable = data;
	560	}
	561
	562
1da177e4 LT	563	struct ethtool_ops gfar_ethtool_ops = {
1da177e4 LT	564	.get_settings = gfar_gsettings,
bb40dcbb	565	.set_settings = gfar_ssettings,
1da177e4 LT	566	.get_drvinfo = gfar_gdrvinfo,
	567	.get_regs_len = gfar_reglen,
	568	.get_regs = gfar_get_regs,
	569	.get_link = ethtool_op_get_link,
	570	.get_coalesce = gfar_gcoalesce,
	571	.set_coalesce = gfar_scoalesce,
	572	.get_ringparam = gfar_gringparam,
	573	.set_ringparam = gfar_sringparam,
	574	.get_strings = gfar_gstrings,
	575	.get_stats_count = gfar_stats_count,
	576	.get_ethtool_stats = gfar_fill_stats,
0bbaf069 KG	577	.get_rx_csum = gfar_get_rx_csum,
	578	.get_tx_csum = gfar_get_tx_csum,
	579	.set_rx_csum = gfar_set_rx_csum,
	580	.set_tx_csum = gfar_set_tx_csum,
	581	.get_msglevel = gfar_get_msglevel,
	582	.set_msglevel = gfar_set_msglevel,
1da177e4	583	};