diff options
Diffstat (limited to 'cpu/ppc4xx/miiphy.c')
| -rw-r--r-- | cpu/ppc4xx/miiphy.c | 209 |
1 files changed, 131 insertions, 78 deletions
diff --git a/cpu/ppc4xx/miiphy.c b/cpu/ppc4xx/miiphy.c index cb9dccdc35b..24f91546c62 100644 --- a/cpu/ppc4xx/miiphy.c +++ b/cpu/ppc4xx/miiphy.c @@ -1,42 +1,44 @@ /*-----------------------------------------------------------------------------+ | - | This source code has been made available to you by IBM on an AS-IS - | basis. Anyone receiving this source is licensed under IBM - | copyrights to use it in any way he or she deems fit, including - | copying it, modifying it, compiling it, and redistributing it either - | with or without modifications. No license under IBM patents or - | patent applications is to be implied by the copyright license. + | This source code has been made available to you by IBM on an AS-IS + | basis. Anyone receiving this source is licensed under IBM + | copyrights to use it in any way he or she deems fit, including + | copying it, modifying it, compiling it, and redistributing it either + | with or without modifications. No license under IBM patents or + | patent applications is to be implied by the copyright license. | - | Any user of this software should understand that IBM cannot provide - | technical support for this software and will not be responsible for - | any consequences resulting from the use of this software. + | Any user of this software should understand that IBM cannot provide + | technical support for this software and will not be responsible for + | any consequences resulting from the use of this software. | - | Any person who transfers this source code or any derivative work - | must include the IBM copyright notice, this paragraph, and the - | preceding two paragraphs in the transferred software. + | Any person who transfers this source code or any derivative work + | must include the IBM copyright notice, this paragraph, and the + | preceding two paragraphs in the transferred software. | - | COPYRIGHT I B M CORPORATION 1995 - | LICENSED MATERIAL - PROGRAM PROPERTY OF I B M + | COPYRIGHT I B M CORPORATION 1995 + | LICENSED MATERIAL - PROGRAM PROPERTY OF I B M +-----------------------------------------------------------------------------*/ /*-----------------------------------------------------------------------------+ | - | File Name: miiphy.c + | File Name: miiphy.c | - | Function: This module has utilities for accessing the MII PHY through + | Function: This module has utilities for accessing the MII PHY through | the EMAC3 macro. | - | Author: Mark Wisner + | Author: Mark Wisner | | Change Activity- | - | Date Description of Change BY - | --------- --------------------- --- - | 05-May-99 Created MKW - | 01-Jul-99 Changed clock setting of sta_reg from 66Mhz to 50Mhz to - | better match OPB speed. Also modified delay times. JWB - | 29-Jul-99 Added Full duplex support MKW - | 24-Aug-99 Removed printf from dp83843_duplex() JWB - | 19-Jul-00 Ported to esd cpci405 sr + | Date Description of Change BY + | --------- --------------------- --- + | 05-May-99 Created MKW + | 01-Jul-99 Changed clock setting of sta_reg from 66Mhz to 50Mhz to + | better match OPB speed. Also modified delay times. JWB + | 29-Jul-99 Added Full duplex support MKW + | 24-Aug-99 Removed printf from dp83843_duplex() JWB + | 19-Jul-00 Ported to esd cpci405 sr + | 23-Dec-03 Ported from miiphy.c to 440GX Travis Sawyer TBS + | <travis.sawyer@sandburst.com> | +-----------------------------------------------------------------------------*/ @@ -44,15 +46,13 @@ #include <asm/processor.h> #include <ppc_asm.tmpl> #include <commproc.h> -#include <405gp_enet.h> +#include <ppc4xx_enet.h> #include <405_mal.h> #include <miiphy.h> -#if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \ - (defined(CONFIG_440) && !defined(CONFIG_NET_MULTI)) /***********************************************************/ -/* Dump out to the screen PHY regs */ +/* Dump out to the screen PHY regs */ /***********************************************************/ void miiphy_dump (unsigned char addr) @@ -72,75 +72,127 @@ void miiphy_dump (unsigned char addr) if (i == 0x07) i = 0x0f; - } /* end for loop */ -} /* end dump */ + } /* end for loop */ +} /* end dump */ /***********************************************************/ -/* read a phy reg and return the value with a rc */ -/* Note: We are referencing to EMAC_STACR register */ -/* @(EMAC_BASE + 92) because of: */ -/* - 405EP has only STACR for EMAC0 pinned out */ -/* - 405GP has onle one EMAC0 */ -/* - For 440 this module gets compiled only for */ -/* !CONFIG_NET_MULTI, i.e. only EMAC0 is supported. */ +/* (Re)start autonegotiation */ /***********************************************************/ +int phy_setup_aneg (unsigned char addr) +{ + unsigned short ctl, adv; + + /* Setup standard advertise */ + miiphy_read (addr, PHY_ANAR, &adv); + adv |= (PHY_ANLPAR_ACK | PHY_ANLPAR_RF | PHY_ANLPAR_T4 | + PHY_ANLPAR_TXFD | PHY_ANLPAR_TX | PHY_ANLPAR_10FD | + PHY_ANLPAR_10); + miiphy_write (addr, PHY_ANAR, adv); -int miiphy_read (unsigned char addr, unsigned char reg, - unsigned short *value) + /* Start/Restart aneg */ + miiphy_read (addr, PHY_BMCR, &ctl); + ctl |= (PHY_BMCR_AUTON | PHY_BMCR_RST_NEG); + miiphy_write (addr, PHY_BMCR, ctl); + + return 0; +} + + +/***********************************************************/ +/* read a phy reg and return the value with a rc */ +/***********************************************************/ +unsigned int miiphy_getemac_offset (void) { - unsigned long sta_reg; /* STA scratch area */ +#if defined(CONFIG_440) && defined(CONFIG_NET_MULTI) + unsigned long zmii; + unsigned long eoffset; + + /* Need to find out which mdi port we're using */ + zmii = in32 (ZMII_FER); + + if (zmii & (ZMII_FER_MDI << ZMII_FER_V (0))) { + /* using port 0 */ + eoffset = 0; + } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (1))) { + /* using port 1 */ + eoffset = 0x100; + } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (2))) { + /* using port 2 */ + eoffset = 0x400; + } else if (zmii & (ZMII_FER_MDI << ZMII_FER_V (3))) { + /* using port 3 */ + eoffset = 0x600; + } else { + /* None of the mdi ports are enabled! */ + /* enable port 0 */ + zmii |= ZMII_FER_MDI << ZMII_FER_V (0); + out32 (ZMII_FER, zmii); + eoffset = 0; + /* need to soft reset port 0 */ + zmii = in32 (EMAC_M0); + zmii |= EMAC_M0_SRST; + out32 (EMAC_M0, zmii); + } + + return (eoffset); +#else + return 0; +#endif +} + + +int miiphy_read (unsigned char addr, unsigned char reg, unsigned short *value) +{ + unsigned long sta_reg; /* STA scratch area */ unsigned long i; + unsigned long emac_reg; + + emac_reg = miiphy_getemac_offset (); /* see if it is ready for 1000 nsec */ i = 0; /* see if it is ready for sec */ - while ((in32 (EMAC_STACR) & EMAC_STACR_OC) == 0) { + while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == 0) { udelay (7); if (i > 5) { -#if 0 /* test-only */ +#if 0 printf ("read err 1\n"); #endif return -1; } i++; } - sta_reg = reg; /* reg address */ + sta_reg = reg; /* reg address */ /* set clock (50Mhz) and read flags */ +#if defined(CONFIG_440GX) + sta_reg |= EMAC_STACR_READ; +#else sta_reg = (sta_reg | EMAC_STACR_READ) & ~EMAC_STACR_CLK_100MHZ; -#ifdef CONFIG_PHY_CLK_FREQ +#endif + +#if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440GX) sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ; #endif sta_reg = sta_reg | (addr << 5); /* Phy address */ - out32 (EMAC_STACR, sta_reg); -#if 0 /* test-only */ + out32 (EMAC_STACR + emac_reg, sta_reg); +#if 0 /* test-only */ printf ("a2: write: EMAC_STACR=0x%0x\n", sta_reg); /* test-only */ #endif -#ifdef CONFIG_PHY_CMD_DELAY - udelay (CONFIG_PHY_CMD_DELAY); /* Intel LXT971A needs this */ -#endif - sta_reg = in32 (EMAC_STACR); + sta_reg = in32 (EMAC_STACR + emac_reg); i = 0; while ((sta_reg & EMAC_STACR_OC) == 0) { udelay (7); if (i > 5) { -#if 0 /* test-only */ - printf ("read err 2\n"); -#endif return -1; } i++; - sta_reg = in32 (EMAC_STACR); + sta_reg = in32 (EMAC_STACR + emac_reg); } if ((sta_reg & EMAC_STACR_PHYE) != 0) { -#if 0 /* test-only */ - printf ("read err 3\n"); - printf ("a2: read: EMAC_STACR=0x%0lx, i=%d\n", - sta_reg, (int) i); /* test-only */ -#endif return -1; } @@ -148,58 +200,59 @@ int miiphy_read (unsigned char addr, unsigned char reg, return 0; -} /* phy_read */ +} /* phy_read */ /***********************************************************/ -/* write a phy reg and return the value with a rc */ +/* write a phy reg and return the value with a rc */ /***********************************************************/ -int miiphy_write (unsigned char addr, unsigned char reg, - unsigned short value) +int miiphy_write (unsigned char addr, unsigned char reg, unsigned short value) { - unsigned long sta_reg; /* STA scratch area */ + unsigned long sta_reg; /* STA scratch area */ unsigned long i; + unsigned long emac_reg; + emac_reg = miiphy_getemac_offset (); /* see if it is ready for 1000 nsec */ i = 0; - while ((in32 (EMAC_STACR) & EMAC_STACR_OC) == 0) { + while ((in32 (EMAC_STACR + emac_reg) & EMAC_STACR_OC) == 0) { if (i > 5) return -1; udelay (7); i++; } sta_reg = 0; - sta_reg = reg; /* reg address */ + sta_reg = reg; /* reg address */ /* set clock (50Mhz) and read flags */ +#if defined(CONFIG_440GX) + sta_reg |= EMAC_STACR_WRITE; +#else sta_reg = (sta_reg | EMAC_STACR_WRITE) & ~EMAC_STACR_CLK_100MHZ; -#ifdef CONFIG_PHY_CLK_FREQ - sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ; /* Set clock frequency (PLB freq. dependend) */ +#endif + +#if defined(CONFIG_PHY_CLK_FREQ) && !defined(CONFIG_440GX) + sta_reg = sta_reg | CONFIG_PHY_CLK_FREQ; /* Set clock frequency (PLB freq. dependend) */ #endif sta_reg = sta_reg | ((unsigned long) addr << 5); /* Phy address */ memcpy (&sta_reg, &value, 2); /* put in data */ - out32 (EMAC_STACR, sta_reg); + out32 (EMAC_STACR + emac_reg, sta_reg); -#ifdef CONFIG_PHY_CMD_DELAY - udelay (CONFIG_PHY_CMD_DELAY); /* Intel LXT971A needs this */ -#endif /* wait for completion */ i = 0; - sta_reg = in32 (EMAC_STACR); + sta_reg = in32 (EMAC_STACR + emac_reg); while ((sta_reg & EMAC_STACR_OC) == 0) { udelay (7); if (i > 5) return -1; i++; - sta_reg = in32 (EMAC_STACR); + sta_reg = in32 (EMAC_STACR + emac_reg); } if ((sta_reg & EMAC_STACR_PHYE) != 0) return -1; return 0; -} /* phy_read */ - -#endif /* CONFIG_405GP */ +} /* phy_write */ |