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583 lines
15 KiB
583 lines
15 KiB
/*
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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
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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/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 <linux/mii.h>
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#include <linux/phy.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 void gfar_start(struct net_device *dev);
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extern int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);
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#define GFAR_MAX_COAL_USECS 0xffff
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#define GFAR_MAX_COAL_FRAMES 0xff
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static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
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u64 * buf);
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static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
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static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
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static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
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static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
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static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
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static 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 a buffer with the strings which correspond to the
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* stats */
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static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
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{
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struct gfar_private *priv = netdev_priv(dev);
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if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
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memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
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else
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memcpy(buf, stat_gstrings,
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GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
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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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static 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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u64 *extra = (u64 *) & priv->extra_stats;
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if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
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u32 __iomem *rmon = (u32 __iomem *) & priv->regs->rmon;
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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) gfar_read(&rmon[i]);
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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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} else
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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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/* Returns the number of stats (and their corresponding strings) */
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static int gfar_stats_count(struct net_device *dev)
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{
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struct gfar_private *priv = netdev_priv(dev);
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if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
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return GFAR_STATS_LEN;
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else
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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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static 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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static int gfar_ssettings(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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struct phy_device *phydev = priv->phydev;
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if (NULL == phydev)
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return -ENODEV;
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return phy_ethtool_sset(phydev, cmd);
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}
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/* Return the current settings in the ethtool_cmd structure */
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static 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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struct phy_device *phydev = priv->phydev;
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if (NULL == phydev)
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return -ENODEV;
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cmd->maxtxpkt = priv->txcount;
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cmd->maxrxpkt = priv->rxcount;
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return phy_ethtool_gset(phydev, cmd);
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}
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/* Return the length of the register structure */
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static 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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static 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 __iomem *theregs = (u32 __iomem *) 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] = gfar_read(&theregs[i]);
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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->phydev->speed) {
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case SPEED_1000:
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count = GFAR_GBIT_TIME;
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break;
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case SPEED_100:
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count = GFAR_100_TIME;
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break;
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case SPEED_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->phydev->speed) {
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case SPEED_1000:
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count = GFAR_GBIT_TIME;
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break;
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case SPEED_100:
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count = GFAR_100_TIME;
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break;
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case SPEED_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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static 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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if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
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return -EOPNOTSUPP;
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if (NULL == priv->phydev)
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return -ENODEV;
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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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static 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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if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
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return -EOPNOTSUPP;
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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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if (NULL == priv->phydev)
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return -ENODEV;
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/* Check the bounds of the values */
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if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
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pr_info("Coalescing is limited to %d microseconds\n",
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GFAR_MAX_COAL_USECS);
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return -EINVAL;
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}
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if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
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pr_info("Coalescing is limited to %d frames\n",
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GFAR_MAX_COAL_FRAMES);
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return -EINVAL;
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}
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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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/* Check the bounds of the values */
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if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
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pr_info("Coalescing is limited to %d microseconds\n",
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GFAR_MAX_COAL_USECS);
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return -EINVAL;
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}
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if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
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pr_info("Coalescing is limited to %d frames\n",
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GFAR_MAX_COAL_FRAMES);
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return -EINVAL;
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}
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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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static 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
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* the rings. */
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static int gfar_sringparam(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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int err = 0;
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if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
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return -EINVAL;
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if (!is_power_of_2(rvals->rx_pending)) {
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printk("%s: Ring sizes must be a power of 2\n",
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dev->name);
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return -EINVAL;
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}
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if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
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return -EINVAL;
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if (!is_power_of_2(rvals->tx_pending)) {
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printk("%s: Ring sizes must be a power of 2\n",
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dev->name);
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return -EINVAL;
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}
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|
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if (dev->flags & IFF_UP) {
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unsigned long flags;
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/* Halt TX and RX, and process the frames which
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* have already been received */
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spin_lock_irqsave(&priv->lock, flags);
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gfar_halt(dev);
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gfar_clean_rx_ring(dev, priv->rx_ring_size);
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spin_unlock_irqrestore(&priv->lock, flags);
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/* Now we take down the rings to rebuild them */
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stop_gfar(dev);
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}
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/* Change the size */
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priv->rx_ring_size = rvals->rx_pending;
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priv->tx_ring_size = rvals->tx_pending;
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|
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/* Rebuild the rings with the new size */
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if (dev->flags & IFF_UP)
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err = startup_gfar(dev);
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return err;
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}
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|
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static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
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{
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struct gfar_private *priv = netdev_priv(dev);
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int err = 0;
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if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
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return -EOPNOTSUPP;
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if (dev->flags & IFF_UP) {
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unsigned long flags;
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/* Halt TX and RX, and process the frames which
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* have already been received */
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spin_lock_irqsave(&priv->lock, flags);
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gfar_halt(dev);
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gfar_clean_rx_ring(dev, priv->rx_ring_size);
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spin_unlock_irqrestore(&priv->lock, flags);
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/* Now we take down the rings to rebuild them */
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stop_gfar(dev);
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}
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priv->rx_csum_enable = data;
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if (dev->flags & IFF_UP)
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err = startup_gfar(dev);
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return err;
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}
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static uint32_t gfar_get_rx_csum(struct net_device *dev)
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{
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struct gfar_private *priv = netdev_priv(dev);
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if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
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return 0;
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return priv->rx_csum_enable;
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}
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static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
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{
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unsigned long flags;
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struct gfar_private *priv = netdev_priv(dev);
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if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
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return -EOPNOTSUPP;
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spin_lock_irqsave(&priv->lock, flags);
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gfar_halt(dev);
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if (data)
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dev->features |= NETIF_F_IP_CSUM;
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else
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dev->features &= ~NETIF_F_IP_CSUM;
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gfar_start(dev);
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spin_unlock_irqrestore(&priv->lock, flags);
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return 0;
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}
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static uint32_t gfar_get_tx_csum(struct net_device *dev)
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{
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struct gfar_private *priv = netdev_priv(dev);
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if (!(priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
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return 0;
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return (dev->features & NETIF_F_IP_CSUM) != 0;
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}
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static uint32_t gfar_get_msglevel(struct net_device *dev)
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{
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struct gfar_private *priv = netdev_priv(dev);
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return priv->msg_enable;
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}
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static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
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{
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struct gfar_private *priv = netdev_priv(dev);
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priv->msg_enable = data;
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}
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struct ethtool_ops gfar_ethtool_ops = {
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.get_settings = gfar_gsettings,
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.set_settings = gfar_ssettings,
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.get_drvinfo = gfar_gdrvinfo,
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.get_regs_len = gfar_reglen,
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.get_regs = gfar_get_regs,
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.get_link = ethtool_op_get_link,
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.get_coalesce = gfar_gcoalesce,
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.set_coalesce = gfar_scoalesce,
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.get_ringparam = gfar_gringparam,
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.set_ringparam = gfar_sringparam,
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.get_strings = gfar_gstrings,
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.get_stats_count = gfar_stats_count,
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.get_ethtool_stats = gfar_fill_stats,
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.get_rx_csum = gfar_get_rx_csum,
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.get_tx_csum = gfar_get_tx_csum,
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.set_rx_csum = gfar_set_rx_csum,
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.set_tx_csum = gfar_set_tx_csum,
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.get_msglevel = gfar_get_msglevel,
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.set_msglevel = gfar_set_msglevel,
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};
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