diff options
Diffstat (limited to 'common/miiphyutil.c')
| -rw-r--r-- | common/miiphyutil.c | 151 |
1 files changed, 93 insertions, 58 deletions
diff --git a/common/miiphyutil.c b/common/miiphyutil.c index 58ebc5ec2..281f0b29e 100644 --- a/common/miiphyutil.c +++ b/common/miiphyutil.c @@ -344,101 +344,136 @@ int miiphy_reset (char *devname, unsigned char addr) /***************************************************************************** * - * Determine the ethernet speed (10/100). + * Determine the ethernet speed (10/100/1000). Return 10 on error. */ int miiphy_speed (char *devname, unsigned char addr) { - unsigned short reg; + u16 bmcr, anlpar; #if defined(CONFIG_PHY_GIGE) - if (miiphy_read (devname, addr, PHY_1000BTSR, ®)) { - printf ("PHY 1000BT Status read failed\n"); - } else { - if (reg != 0xFFFF) { - if ((reg & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) - != 0) { - return (_1000BASET); - } - } + u16 btsr; + + /* + * Check for 1000BASE-X. If it is supported, then assume that the speed + * is 1000. + */ + if (miiphy_is_1000base_x (devname, addr)) { + return _1000BASET; + } + /* + * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set. + */ + /* Check for 1000BASE-T. */ + if (miiphy_read (devname, addr, PHY_1000BTSR, &btsr)) { + printf ("PHY 1000BT status"); + goto miiphy_read_failed; + } + if (btsr != 0xFFFF && + (btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))) { + return _1000BASET; } #endif /* CONFIG_PHY_GIGE */ /* Check Basic Management Control Register first. */ - if (miiphy_read (devname, addr, PHY_BMCR, ®)) { - puts ("PHY speed read failed, assuming 10bT\n"); - return (_10BASET); + if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) { + printf ("PHY speed"); + goto miiphy_read_failed; } /* Check if auto-negotiation is on. */ - if ((reg & PHY_BMCR_AUTON) != 0) { + if (bmcr & PHY_BMCR_AUTON) { /* Get auto-negotiation results. */ - if (miiphy_read (devname, addr, PHY_ANLPAR, ®)) { - puts ("PHY AN speed read failed, assuming 10bT\n"); - return (_10BASET); - } - if ((reg & PHY_ANLPAR_100) != 0) { - return (_100BASET); - } else { - return (_10BASET); + if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) { + printf ("PHY AN speed"); + goto miiphy_read_failed; } + return (anlpar & PHY_ANLPAR_100) ? _100BASET : _10BASET; } /* Get speed from basic control settings. */ - else if (reg & PHY_BMCR_100MB) { - return (_100BASET); - } else { - return (_10BASET); - } + return (bmcr & PHY_BMCR_100MB) ? _100BASET : _10BASET; + miiphy_read_failed: + printf (" read failed, assuming 10BASE-T\n"); + return _10BASET; } /***************************************************************************** * - * Determine full/half duplex. + * Determine full/half duplex. Return half on error. */ int miiphy_duplex (char *devname, unsigned char addr) { - unsigned short reg; + u16 bmcr, anlpar; #if defined(CONFIG_PHY_GIGE) - if (miiphy_read (devname, addr, PHY_1000BTSR, ®)) { - printf ("PHY 1000BT Status read failed\n"); - } else { - if ((reg != 0xFFFF) && - (reg & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD))) { - if ((reg & PHY_1000BTSR_1000FD) != 0) { - return (FULL); - } else { - return (HALF); - } + u16 btsr; + + /* Check for 1000BASE-X. */ + if (miiphy_is_1000base_x (devname, addr)) { + /* 1000BASE-X */ + if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) { + printf ("1000BASE-X PHY AN duplex"); + goto miiphy_read_failed; + } + } + /* + * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set. + */ + /* Check for 1000BASE-T. */ + if (miiphy_read (devname, addr, PHY_1000BTSR, &btsr)) { + printf ("PHY 1000BT status"); + goto miiphy_read_failed; + } + if (btsr != 0xFFFF) { + if (btsr & PHY_1000BTSR_1000FD) { + return FULL; + } else if (btsr & PHY_1000BTSR_1000HD) { + return HALF; } } #endif /* CONFIG_PHY_GIGE */ /* Check Basic Management Control Register first. */ - if (miiphy_read (devname, addr, PHY_BMCR, ®)) { - puts ("PHY duplex read failed, assuming half duplex\n"); - return (HALF); + if (miiphy_read (devname, addr, PHY_BMCR, &bmcr)) { + puts ("PHY duplex"); + goto miiphy_read_failed; } /* Check if auto-negotiation is on. */ - if ((reg & PHY_BMCR_AUTON) != 0) { + if (bmcr & PHY_BMCR_AUTON) { /* Get auto-negotiation results. */ - if (miiphy_read (devname, addr, PHY_ANLPAR, ®)) { - puts ("PHY AN duplex read failed, assuming half duplex\n"); - return (HALF); - } - - if ((reg & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD)) != 0) { - return (FULL); - } else { - return (HALF); + if (miiphy_read (devname, addr, PHY_ANLPAR, &anlpar)) { + puts ("PHY AN duplex"); + goto miiphy_read_failed; } + return (anlpar & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD)) ? + FULL : HALF; } /* Get speed from basic control settings. */ - else if (reg & PHY_BMCR_DPLX) { - return (FULL); - } else { - return (HALF); - } + return (bmcr & PHY_BMCR_DPLX) ? FULL : HALF; + + miiphy_read_failed: + printf (" read failed, assuming half duplex\n"); + return HALF; +} +/***************************************************************************** + * + * Return 1 if PHY supports 1000BASE-X, 0 if PHY supports 10BASE-T/100BASE-TX/ + * 1000BASE-T, or on error. + */ +int miiphy_is_1000base_x (char *devname, unsigned char addr) +{ +#if defined(CONFIG_PHY_GIGE) + u16 exsr; + + if (miiphy_read (devname, addr, PHY_EXSR, &exsr)) { + printf ("PHY extended status read failed, assuming no " + "1000BASE-X\n"); + return 0; + } + return 0 != (exsr & (PHY_EXSR_1000XF | PHY_EXSR_1000XH)); +#else + return 0; +#endif } #ifdef CFG_FAULT_ECHO_LINK_DOWN |