/* * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. * TsiChung Liew (Tsi-Chung.Liew@freescale.com) * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <asm/fec.h> #include <asm/immap.h> #include <config.h> #include <net.h> DECLARE_GLOBAL_DATA_PTR; #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI) #undef MII_DEBUG #undef ET_DEBUG int fecpin_setclear(struct eth_device *dev, int setclear) { if (setclear) { /* Enable Ethernet pins */ mbar_writeByte(MCF_GPIO_PAR_FECI2C, CFG_FECI2C); } else { } return 0; } #if defined(CFG_DISCOVER_PHY) || defined(CONFIG_CMD_MII) #include <miiphy.h> /* Make MII read/write commands for the FEC. */ #define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | (REG & 0x1f) << 18)) #define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | (REG & 0x1f) << 18) | (VAL & 0xffff)) /* PHY identification */ #define PHY_ID_LXT970 0x78100000 /* LXT970 */ #define PHY_ID_LXT971 0x001378e0 /* LXT971 and 972 */ #define PHY_ID_82555 0x02a80150 /* Intel 82555 */ #define PHY_ID_QS6612 0x01814400 /* QS6612 */ #define PHY_ID_AMD79C784 0x00225610 /* AMD 79C784 */ #define PHY_ID_LSI80225 0x0016f870 /* LSI 80225 */ #define PHY_ID_LSI80225B 0x0016f880 /* LSI 80225/B */ #define PHY_ID_DP83848VV 0x20005C90 /* National 83848 */ #define PHY_ID_DP83849 0x20005CA2 /* National 82849 */ #define PHY_ID_KS8721BL 0x00221619 /* Micrel KS8721BL/SL */ #define STR_ID_LXT970 "LXT970" #define STR_ID_LXT971 "LXT971" #define STR_ID_82555 "Intel82555" #define STR_ID_QS6612 "QS6612" #define STR_ID_AMD79C784 "AMD79C784" #define STR_ID_LSI80225 "LSI80225" #define STR_ID_LSI80225B "LSI80225/B" #define STR_ID_DP83848VV "N83848" #define STR_ID_DP83849 "N83849" #define STR_ID_KS8721BL "KS8721BL" /**************************************************************************** * mii_init -- Initialize the MII for MII command without ethernet * This function is a subset of eth_init **************************************************************************** */ void mii_reset(struct fec_info_s *info) { volatile fec_t *fecp = (fec_t *) (info->miibase); int i; fecp->ecr = FEC_ECR_RESET; for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) { udelay(1); } if (i == FEC_RESET_DELAY) { printf("FEC_RESET_DELAY timeout\n"); } } /* send command to phy using mii, wait for result */ uint mii_send(uint mii_cmd) { struct fec_info_s *info; struct eth_device *dev; volatile fec_t *ep; uint mii_reply; int j = 0; /* retrieve from register structure */ dev = eth_get_dev(); info = dev->priv; ep = (fec_t *) info->miibase; ep->mmfr = mii_cmd; /* command to phy */ /* wait for mii complete */ while (!(ep->eir & FEC_EIR_MII) && (j < MCFFEC_TOUT_LOOP)) { udelay(1); j++; } if (j >= MCFFEC_TOUT_LOOP) { printf("MII not complete\n"); return -1; } mii_reply = ep->mmfr; /* result from phy */ ep->eir = FEC_EIR_MII; /* clear MII complete */ #ifdef ET_DEBUG printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n", __FILE__, __LINE__, __FUNCTION__, mii_cmd, mii_reply); #endif return (mii_reply & 0xffff); /* data read from phy */ } #endif /* CFG_DISCOVER_PHY || CONFIG_CMD_MII */ #if defined(CFG_DISCOVER_PHY) int mii_discover_phy(struct eth_device *dev) { #define MAX_PHY_PASSES 11 struct fec_info_s *info = dev->priv; int phyaddr, pass; uint phyno, phytype; if (info->phyname_init) return info->phy_addr; phyaddr = -1; /* didn't find a PHY yet */ for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) { if (pass > 1) { /* PHY may need more time to recover from reset. * The LXT970 needs 50ms typical, no maximum is * specified, so wait 10ms before try again. * With 11 passes this gives it 100ms to wake up. */ udelay(10000); /* wait 10ms */ } for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) { phytype = mii_send(mk_mii_read(phyno, PHY_PHYIDR1)); #ifdef ET_DEBUG printf("PHY type 0x%x pass %d type\n", phytype, pass); #endif if (phytype != 0xffff) { phyaddr = phyno; phytype <<= 16; phytype |= mii_send(mk_mii_read(phyno, PHY_PHYIDR2)); switch (phytype & 0xffffffff) { case PHY_ID_KS8721BL: strcpy(info->phy_name, STR_ID_KS8721BL); info->phyname_init = 1; break; default: strcpy(info->phy_name, "unknown"); info->phyname_init = 1; break; } #ifdef ET_DEBUG printf("PHY @ 0x%x pass %d type ", phyno, pass); switch (phytype & 0xffffffff) { case PHY_ID_KS8721BL: printf(STR_ID_KS8721BL); break; default: printf("0x%08x\n", phytype); break; } #endif } } } if (phyaddr < 0) printf("No PHY device found.\n"); return phyaddr; } #endif /* CFG_DISCOVER_PHY */ int mii_init(void) __attribute__((weak,alias("__mii_init"))); void __mii_init(void) { volatile fec_t *fecp; struct fec_info_s *info; struct eth_device *dev; int miispd = 0, i = 0; u16 autoneg = 0; /* retrieve from register structure */ dev = eth_get_dev(); info = dev->priv; fecp = (fec_t *) info->miibase; fecpin_setclear(dev, 1); mii_reset(info); /* We use strictly polling mode only */ fecp->eimr = 0; /* Clear any pending interrupt */ fecp->eir = 0xffffffff; /* Set MII speed */ miispd = (gd->bus_clk / 1000000) / 5; fecp->mscr = miispd << 1; info->phy_addr = mii_discover_phy(dev); #define AUTONEGLINK (PHY_BMSR_AUTN_COMP | PHY_BMSR_LS) while (i < MCFFEC_TOUT_LOOP) { autoneg = 0; miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &autoneg); i++; if ((autoneg & AUTONEGLINK) == AUTONEGLINK) break; udelay(500); } if (i >= MCFFEC_TOUT_LOOP) { printf("Auto Negotiation not complete\n"); } /* adapt to the half/full speed settings */ info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16; info->dup_spd |= miiphy_speed(dev->name, info->phy_addr); } /***************************************************************************** * Read and write a MII PHY register, routines used by MII Utilities * * FIXME: These routines are expected to return 0 on success, but mii_send * does _not_ return an error code. Maybe 0xFFFF means error, i.e. * no PHY connected... * For now always return 0. * FIXME: These routines only work after calling eth_init() at least once! * Otherwise they hang in mii_send() !!! Sorry! *****************************************************************************/ int mcffec_miiphy_read(char *devname, unsigned char addr, unsigned char reg, unsigned short *value) { short rdreg; /* register working value */ #ifdef MII_DEBUG printf("miiphy_read(0x%x) @ 0x%x = ", reg, addr); #endif rdreg = mii_send(mk_mii_read(addr, reg)); *value = rdreg; #ifdef MII_DEBUG printf("0x%04x\n", *value); #endif return 0; } int mcffec_miiphy_write(char *devname, unsigned char addr, unsigned char reg, unsigned short value) { short rdreg; /* register working value */ #ifdef MII_DEBUG printf("miiphy_write(0x%x) @ 0x%x = ", reg, addr); #endif rdreg = mii_send(mk_mii_write(addr, reg, value)); #ifdef MII_DEBUG printf("0x%04x\n", value); #endif return 0; } #endif /* CONFIG_CMD_NET, FEC_ENET & NET_MULTI */