mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
5c40548f01
Rename int mii_init(void) to void mii_init(void) for idmr ColdFire platform Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
303 lines
7.8 KiB
C
303 lines
7.8 KiB
C
/*
|
|
* 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 */
|
|
|
|
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 */
|