This commit changes the behaviour of the 'miitool'. Now in order to show PHY's link information 'miitool' should be invoked as such: miitool -s [PHY] Also, implment code to allow to register a dummy PHY device in order to be able to perform raw MDIO bus access. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
371 lines
9.1 KiB
C
371 lines
9.1 KiB
C
/*
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* Copyright (C) 2012 Antony Pavlov <antonynpavlov@gmail.com>
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*
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* This file is part of barebox.
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is based on Donald Becker's "mii-diag" and
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* David A. Hinds' "mii-tool".
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*
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* mii-tool is written/copyright 2000 by David A. Hinds
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* <dhinds@pcmcia.sourceforge.org>
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*
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* mii-diag is written/copyright 1997-2000 by Donald Becker
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* <becker@scyld.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <command.h>
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#include <init.h>
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#include <driver.h>
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#include <malloc.h>
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#include <errno.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <linux/stat.h>
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#include <xfuncs.h>
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#include <net.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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#include <linux/err.h>
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const struct {
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char *name;
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u_short value[2];
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} media[] = {
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/* The order through 100baseT4 matches bits in the BMSR */
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{ "10baseT-HD", {ADVERTISE_10HALF} },
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{ "10baseT-FD", {ADVERTISE_10FULL} },
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{ "100baseTx-HD", {ADVERTISE_100HALF} },
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{ "100baseTx-FD", {ADVERTISE_100FULL} },
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{ "100baseT4", {LPA_100BASE4} },
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{ "100baseTx", {ADVERTISE_100FULL | ADVERTISE_100HALF} },
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{ "10baseT", {ADVERTISE_10FULL | ADVERTISE_10HALF} },
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{ "1000baseT-HD", {0, ADVERTISE_1000HALF} },
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{ "1000baseT-FD", {0, ADVERTISE_1000FULL} },
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{ "1000baseT", {0, ADVERTISE_1000HALF | ADVERTISE_1000FULL} },
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};
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#define NMEDIA (sizeof(media)/sizeof(media[0]))
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static const char *media_list(unsigned mask, unsigned mask2, int best)
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{
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static char buf[256];
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int i;
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*buf = '\0';
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if (mask2) {
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if (mask2 & ADVERTISE_1000FULL) {
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strcat(buf, " ");
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strcat(buf, "1000baseT-FD");
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if (best)
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goto out;
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}
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if (mask2 & ADVERTISE_1000HALF) {
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strcat(buf, " ");
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strcat(buf, "1000baseT-HD");
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if (best)
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goto out;
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}
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}
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mask >>= 5;
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for (i = 4; i >= 0; i--) {
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if (mask & (1 << i)) {
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strcat(buf, " ");
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strcat(buf, media[i].name);
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if (best)
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break;
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}
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}
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out:
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if (mask & (1 << 5))
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strcat(buf, " flow-control");
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return buf;
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}
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static int show_basic_mii(struct mii_bus *mii, struct phy_device *phydev,
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int verbose)
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{
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char buf[100];
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int i, mii_val[32];
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unsigned bmcr, bmsr, advert, lkpar, bmcr2 = 0, lpa2 = 0;
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struct phy_driver *phydrv;
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int is_phy_gbit;
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/* Some bits in the BMSR are latched, but we can't rely on being
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the only reader, so only the current values are meaningful */
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mii->read(mii, phydev->addr, MII_BMSR);
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for (i = 0; i < 32; i++)
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mii_val[i] = mii->read(mii, phydev->addr, i);
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printf((mii->parent->id) < 0 ? "%s: %s:" : "%s: %s%d: ",
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phydev->cdev.name, mii->parent->name, mii->parent->id);
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if (mii_val[MII_BMCR] == 0xffff || mii_val[MII_BMSR] == 0x0000) {
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fprintf(stderr, " No MII transceiver present!.\n");
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return -1;
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}
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/* Descriptive rename. */
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bmcr = mii_val[MII_BMCR];
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bmsr = mii_val[MII_BMSR];
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advert = mii_val[MII_ADVERTISE];
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lkpar = mii_val[MII_LPA];
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phydrv = to_phy_driver(phydev->dev.driver);
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is_phy_gbit = phydrv->features &
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(SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full);
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if (is_phy_gbit) {
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bmcr2 = mii_val[MII_CTRL1000];
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lpa2 = mii_val[MII_STAT1000];
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}
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*buf = '\0';
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if (bmcr & BMCR_ANENABLE) {
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if (bmsr & BMSR_ANEGCOMPLETE) {
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if (advert & lkpar) {
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sprintf(buf, "%s%s, ", (lkpar & LPA_LPACK) ?
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"negotiated" : "no autonegotiation,",
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media_list(advert & lkpar,
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bmcr2 & lpa2 >> 2, 1));
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} else {
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sprintf(buf, "autonegotiation failed, ");
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}
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} else if (bmcr & BMCR_ANRESTART) {
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sprintf(buf, "autonegotiation restarted, ");
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}
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} else {
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int speed1000;
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speed1000 = ((bmcr2
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& (ADVERTISE_1000HALF
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| ADVERTISE_1000FULL)) & lpa2 >> 2);
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sprintf(buf, "%s Mbit, %s duplex, ",
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speed1000 ? "1000"
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: (bmcr & BMCR_SPEED100) ? "100" : "10",
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(bmcr & BMCR_FULLDPLX) ? "full" : "half");
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}
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strcat(buf, (bmsr & BMSR_LSTATUS) ? "link ok" : "no link");
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printf("%s\n", buf);
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if (verbose > 1) {
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printf(" registers for MII PHY: ");
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for (i = 0; i < 32; i++)
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printf("%s %4.4x",
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((i % 8) ? "" : "\n "), mii_val[i]);
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printf("\n");
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}
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if (verbose) {
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printf(" product info: %s ", phydrv->drv.name);
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printf("(vendor %02x:%02x:%02x, model %d rev %d)\n",
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mii_val[2] >> 10, (mii_val[2] >> 2) & 0xff,
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((mii_val[2] << 6) | (mii_val[3] >> 10)) & 0xff,
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(mii_val[3] >> 4) & 0x3f, mii_val[3] & 0x0f);
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printf(" basic mode: ");
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if (bmcr & BMCR_RESET)
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printf("software reset, ");
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if (bmcr & BMCR_LOOPBACK)
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printf("loopback, ");
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if (bmcr & BMCR_ISOLATE)
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printf("isolate, ");
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if (bmcr & BMCR_CTST)
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printf("collision test, ");
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if (bmcr & BMCR_ANENABLE) {
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printf("autonegotiation enabled\n");
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} else {
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printf("%s Mbit, %s duplex\n",
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(bmcr & BMCR_SPEED100) ? "100" : "10",
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(bmcr & BMCR_FULLDPLX) ? "full" : "half");
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}
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printf(" basic status: ");
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if (bmsr & BMSR_ANEGCOMPLETE)
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printf("autonegotiation complete, ");
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else if (bmcr & BMCR_ANRESTART)
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printf("autonegotiation restarted, ");
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if (bmsr & BMSR_RFAULT)
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printf("remote fault, ");
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printf((bmsr & BMSR_LSTATUS) ? "link ok" : "no link");
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printf("\n capabilities:%s", media_list(bmsr >> 6, bmcr2, 0));
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printf("\n advertising: %s", media_list(advert, bmcr2, 0));
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#define LPA_ABILITY_MASK (LPA_10HALF | LPA_10FULL \
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| LPA_100HALF | LPA_100FULL \
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| LPA_100BASE4 | LPA_PAUSE_CAP)
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if (lkpar & LPA_ABILITY_MASK)
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printf("\n link partner:%s",
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media_list(lkpar, lpa2 >> 2, 0));
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printf("\n");
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}
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return 0;
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}
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static void mdiobus_show(struct device_d *dev, char *phydevname, int verbose)
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{
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struct mii_bus *mii = to_mii_bus(dev);
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int i;
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for (i = 0; i < PHY_MAX_ADDR; i++) {
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struct phy_device *phydev;
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phydev = mdiobus_scan(mii, i);
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if (IS_ERR(phydev) || !phydev->registered)
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continue;
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/*
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* If we are looking for a secific phy, called
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* 'phydevname', but current phydev is not it, skip to
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* the next iteration
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*/
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if (phydevname &&
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strcmp(phydev->cdev.name, phydevname))
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continue;
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show_basic_mii(mii, phydev, verbose);
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/*
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* We were looking for a specific device and at this
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* point we already shown the info about it so end the
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* loop and exit
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*/
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if (phydevname)
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break;
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}
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return;
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}
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enum miitool_operations {
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MIITOOL_NOOP,
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MIITOOL_SHOW,
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MIITOOL_REGISTER,
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};
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static int do_miitool(int argc, char *argv[])
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{
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char *phydevname = NULL;
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char *regstr = NULL;
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char *endp;
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struct mii_bus *mii;
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int opt, ret;
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int verbose = 0;
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struct phy_device *phydev;
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enum miitool_operations action = MIITOOL_NOOP;
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int addr, bus;
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while ((opt = getopt(argc, argv, "vs:r:")) > 0) {
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switch (opt) {
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case 'a':
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addr = simple_strtol(optarg, NULL, 0);
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break;
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case 'b':
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bus = simple_strtoul(optarg, NULL, 0);
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break;
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case 's':
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action = MIITOOL_SHOW;
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phydevname = xstrdup(optarg);
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break;
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case 'r':
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action = MIITOOL_REGISTER;
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regstr = optarg;
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break;
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case 'v':
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verbose++;
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break;
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default:
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ret = COMMAND_ERROR_USAGE;
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goto free_phydevname;
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}
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}
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switch (action) {
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case MIITOOL_REGISTER:
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bus = simple_strtoul(regstr, &endp, 0);
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if (*endp != ':') {
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printf("No colon between bus and address\n");
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return COMMAND_ERROR_USAGE;
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}
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endp++;
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addr = simple_strtoul(endp, NULL, 0);
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if (addr >= PHY_MAX_ADDR)
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printf("Address out of range (max %d)\n", PHY_MAX_ADDR - 1);
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mii = mdiobus_get_bus(bus);
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if (!mii) {
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printf("Can't find MDIO bus #%d\n", bus);
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ret = COMMAND_ERROR;
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goto free_phydevname;
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}
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phydev = phy_device_create(mii, addr, -1);
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ret = phy_register_device(phydev);
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if (ret) {
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printf("failed to register phy %s: %s\n",
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dev_name(&phydev->dev), strerror(-ret));
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goto free_phydevname;
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} else {
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printf("registered phy %s\n", dev_name(&phydev->dev));
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}
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break;
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default:
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case MIITOOL_SHOW:
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for_each_mii_bus(mii) {
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mdiobus_detect(&mii->dev);
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mdiobus_show(&mii->dev, phydevname, verbose);
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}
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break;
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}
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ret = COMMAND_SUCCESS;
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free_phydevname:
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free(phydevname);
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return ret;
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}
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BAREBOX_CMD_HELP_START(miitool)
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BAREBOX_CMD_HELP_TEXT("This utility checks or sets the status of a network interface's")
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BAREBOX_CMD_HELP_TEXT("Media Independent Interface (MII) unit as well as allowing to")
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BAREBOX_CMD_HELP_TEXT("register dummy PHY devices for raw MDIO access. Most fast ethernet")
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BAREBOX_CMD_HELP_TEXT("adapters use an MII to autonegotiate link speed and duplex setting.")
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BAREBOX_CMD_HELP_TEXT("")
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BAREBOX_CMD_HELP_TEXT("Options:")
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BAREBOX_CMD_HELP_OPT("-v", "increase verbosity")
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BAREBOX_CMD_HELP_OPT("-s <devname>", "show PHY status (not providing PHY prints status of all)")
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BAREBOX_CMD_HELP_OPT("-r <busno>:<adr>", "register a PHY")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(miitool)
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.cmd = do_miitool,
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BAREBOX_CMD_DESC("view media-independent interface status")
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BAREBOX_CMD_OPTS("[-vsr]")
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BAREBOX_CMD_GROUP(CMD_GRP_NET)
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BAREBOX_CMD_HELP(cmd_miitool_help)
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BAREBOX_CMD_END
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