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