/* * 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_DEBUGint fecpin_setclear(struct eth_device *dev, int setclear){	volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;	if (setclear) {		gpio->par_fec |= GPIO_PAR_FEC_7W_FEC | GPIO_PAR_FEC_MII_FEC;		gpio->par_feci2c |=		    GPIO_PAR_FECI2C_MDC_EMDC | GPIO_PAR_FECI2C_MDIO_EMDIO;	} else {		gpio->par_fec &= ~(GPIO_PAR_FEC_7W_FEC | GPIO_PAR_FEC_MII_FEC);		gpio->par_feci2c &=		    ~(GPIO_PAR_FECI2C_MDC_EMDC | GPIO_PAR_FECI2C_MDIO_EMDIO);	}	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 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"/**************************************************************************** * 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_DP83848VV:					strcpy(info->phy_name,					       STR_ID_DP83848VV);					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_DP83848VV:					printf(STR_ID_DP83848VV);					break;				default:					printf("0x%08x\n", phytype);					break;				}#endif			}		}	}	if (phyaddr < 0)		printf("No PHY device found.\n");	return phyaddr;}#endif				/* CFG_DISCOVER_PHY */void 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 */