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u-boot/arch/powerpc/cpu/mpc8xx/fec.c
Wolfgang Denk 1b0757eced PPC: remove dead boards (AMX860, c2mon, ETX094, IAD210, LANTEC, SCM) 
These boards have long reached EOL, and there has been no indication
of any active users of such hardware for years.  Get rid of the dead
weight.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Wolfgang Grandegger <wg@denx.de>
2012-10-28 20:17:25 +01:00

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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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 <malloc.h>
#include <commproc.h>
#include <net.h>
#include <command.h>
DECLARE_GLOBAL_DATA_PTR;
#undef ET_DEBUG
#if defined(CONFIG_CMD_NET) && \
(defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FEC1) || defined(CONFIG_ETHER_ON_FEC2))
/* compatibility test, if only FEC_ENET defined assume ETHER on FEC1 */
#if defined(FEC_ENET) && !defined(CONFIG_ETHER_ON_FEC1) && !defined(CONFIG_ETHER_ON_FEC2)
#define CONFIG_ETHER_ON_FEC1 1
#endif
/* define WANT_MII when MII support is required */
#if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_FEC1_PHY) || defined(CONFIG_FEC2_PHY)
#define WANT_MII
#else
#undef WANT_MII
#endif
#if defined(WANT_MII)
#include <miiphy.h>
#if !(defined(CONFIG_MII) || defined(CONFIG_CMD_MII))
#error "CONFIG_MII has to be defined!"
#endif
#endif
#if defined(CONFIG_RMII) && !defined(WANT_MII)
#error RMII support is unusable without a working PHY.
#endif
#ifdef CONFIG_SYS_DISCOVER_PHY
static int mii_discover_phy(struct eth_device *dev);
#endif
int fec8xx_miiphy_read(const char *devname, unsigned char addr,
unsigned char reg, unsigned short *value);
int fec8xx_miiphy_write(const char *devname, unsigned char addr,
unsigned char reg, unsigned short value);
static struct ether_fcc_info_s
{
int ether_index;
int fecp_offset;
int phy_addr;
int actual_phy_addr;
int initialized;
}
ether_fcc_info[] = {
#if defined(CONFIG_ETHER_ON_FEC1)
{
0,
offsetof(immap_t, im_cpm.cp_fec1),
#if defined(CONFIG_FEC1_PHY)
CONFIG_FEC1_PHY,
#else
-1, /* discover */
#endif
-1,
0,
},
#endif
#if defined(CONFIG_ETHER_ON_FEC2)
{
1,
offsetof(immap_t, im_cpm.cp_fec2),
#if defined(CONFIG_FEC2_PHY)
CONFIG_FEC2_PHY,
#else
-1,
#endif
-1,
0,
},
#endif
};
/* Ethernet Transmit and Receive Buffers */
#define DBUF_LENGTH 1520
#define TX_BUF_CNT 2
#define TOUT_LOOP 100
#define PKT_MAXBUF_SIZE 1518
#define PKT_MINBUF_SIZE 64
#define PKT_MAXBLR_SIZE 1520
#ifdef __GNUC__
static char txbuf[DBUF_LENGTH] __attribute__ ((aligned(8)));
#else
#error txbuf must be aligned.
#endif
static uint rxIdx; /* index of the current RX buffer */
static uint txIdx; /* index of the current TX buffer */
/*
* FEC Ethernet Tx and Rx buffer descriptors allocated at the
* immr->udata_bd address on Dual-Port RAM
* Provide for Double Buffering
*/
typedef volatile struct CommonBufferDescriptor {
cbd_t rxbd[PKTBUFSRX]; /* Rx BD */
cbd_t txbd[TX_BUF_CNT]; /* Tx BD */
} RTXBD;
static RTXBD *rtx = NULL;
static int fec_send(struct eth_device *dev, void *packet, int length);
static int fec_recv(struct eth_device* dev);
static int fec_init(struct eth_device* dev, bd_t * bd);
static void fec_halt(struct eth_device* dev);
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
static void __mii_init(void);
#endif
int fec_initialize(bd_t *bis)
{
struct eth_device* dev;
struct ether_fcc_info_s *efis;
int i;
for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++) {
dev = malloc(sizeof(*dev));
if (dev == NULL)
hang();
memset(dev, 0, sizeof(*dev));
/* for FEC1 make sure that the name of the interface is the same
as the old one for compatibility reasons */
if (i == 0) {
sprintf (dev->name, "FEC");
} else {
sprintf (dev->name, "FEC%d",
ether_fcc_info[i].ether_index + 1);
}
efis = &ether_fcc_info[i];
/*
* reset actual phy addr
*/
efis->actual_phy_addr = -1;
dev->priv = efis;
dev->init = fec_init;
dev->halt = fec_halt;
dev->send = fec_send;
dev->recv = fec_recv;
eth_register(dev);
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
miiphy_register(dev->name,
fec8xx_miiphy_read, fec8xx_miiphy_write);
#endif
}
return 1;
}
static int fec_send(struct eth_device *dev, void *packet, int length)
{
int j, rc;
struct ether_fcc_info_s *efis = dev->priv;
volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
/* section 16.9.23.3
* Wait for ready
*/
j = 0;
while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
udelay(1);
j++;
}
if (j>=TOUT_LOOP) {
printf("TX not ready\n");
}
rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
rtx->txbd[txIdx].cbd_datlen = length;
rtx->txbd[txIdx].cbd_sc |= BD_ENET_TX_READY | BD_ENET_TX_LAST;
__asm__ ("eieio");
/* Activate transmit Buffer Descriptor polling */
fecp->fec_x_des_active = 0x01000000; /* Descriptor polling active */
j = 0;
while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
#if defined(CONFIG_ICU862)
udelay(10);
#else
udelay(1);
#endif
j++;
}
if (j>=TOUT_LOOP) {
printf("TX timeout\n");
}
#ifdef ET_DEBUG
printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
__FILE__,__LINE__,__FUNCTION__,j,rtx->txbd[txIdx].cbd_sc,
(rtx->txbd[txIdx].cbd_sc & 0x003C)>>2);
#endif
/* return only status bits */;
rc = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS);
txIdx = (txIdx + 1) % TX_BUF_CNT;
return rc;
}
static int fec_recv (struct eth_device *dev)
{
struct ether_fcc_info_s *efis = dev->priv;
volatile fec_t *fecp =
(volatile fec_t *) (CONFIG_SYS_IMMR + efis->fecp_offset);
int length;
for (;;) {
/* section 16.9.23.2 */
if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
length = -1;
break; /* nothing received - leave for() loop */
}
length = rtx->rxbd[rxIdx].cbd_datlen;
if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
#ifdef ET_DEBUG
printf ("%s[%d] err: %x\n",
__FUNCTION__, __LINE__,
rtx->rxbd[rxIdx].cbd_sc);
#endif
} else {
uchar *rx = NetRxPackets[rxIdx];
length -= 4;
#if defined(CONFIG_CMD_CDP)
if ((rx[0] & 1) != 0
&& memcmp ((uchar *) rx, NetBcastAddr, 6) != 0
&& !is_cdp_packet((uchar *)rx))
rx = NULL;
#endif
/*
* Pass the packet up to the protocol layers.
*/
if (rx != NULL)
NetReceive (rx, length);
}
/* Give the buffer back to the FEC. */
rtx->rxbd[rxIdx].cbd_datlen = 0;
/* wrap around buffer index when necessary */
if ((rxIdx + 1) >= PKTBUFSRX) {
rtx->rxbd[PKTBUFSRX - 1].cbd_sc =
(BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
rxIdx = 0;
} else {
rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
rxIdx++;
}
__asm__ ("eieio");
/* Try to fill Buffer Descriptors */
fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
}
return length;
}
/**************************************************************
*
* FEC Ethernet Initialization Routine
*
*************************************************************/
#define FEC_ECNTRL_PINMUX 0x00000004
#define FEC_ECNTRL_ETHER_EN 0x00000002
#define FEC_ECNTRL_RESET 0x00000001
#define FEC_RCNTRL_BC_REJ 0x00000010
#define FEC_RCNTRL_PROM 0x00000008
#define FEC_RCNTRL_MII_MODE 0x00000004
#define FEC_RCNTRL_DRT 0x00000002
#define FEC_RCNTRL_LOOP 0x00000001
#define FEC_TCNTRL_FDEN 0x00000004
#define FEC_TCNTRL_HBC 0x00000002
#define FEC_TCNTRL_GTS 0x00000001
#define FEC_RESET_DELAY 50
#if defined(CONFIG_RMII)
static inline void fec_10Mbps(struct eth_device *dev)
{
struct ether_fcc_info_s *efis = dev->priv;
int fecidx = efis->ether_index;
uint mask = (fecidx == 0) ? 0x0000010 : 0x0000008;
if ((unsigned int)fecidx >= 2)
hang();
((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_cptr |= mask;
}
static inline void fec_100Mbps(struct eth_device *dev)
{
struct ether_fcc_info_s *efis = dev->priv;
int fecidx = efis->ether_index;
uint mask = (fecidx == 0) ? 0x0000010 : 0x0000008;
if ((unsigned int)fecidx >= 2)
hang();
((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_cptr &= ~mask;
}
#endif
static inline void fec_full_duplex(struct eth_device *dev)
{
struct ether_fcc_info_s *efis = dev->priv;
volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
fecp->fec_r_cntrl &= ~FEC_RCNTRL_DRT;
fecp->fec_x_cntrl |= FEC_TCNTRL_FDEN; /* FD enable */
}
static inline void fec_half_duplex(struct eth_device *dev)
{
struct ether_fcc_info_s *efis = dev->priv;
volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
fecp->fec_r_cntrl |= FEC_RCNTRL_DRT;
fecp->fec_x_cntrl &= ~FEC_TCNTRL_FDEN; /* FD disable */
}
static void fec_pin_init(int fecidx)
{
bd_t *bd = gd->bd;
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
/*
* Set MII speed to 2.5 MHz or slightly below.
*
* According to the MPC860T (Rev. D) Fast ethernet controller user
* manual (6.2.14),
* the MII management interface clock must be less than or equal
* to 2.5 MHz.
* This MDC frequency is equal to system clock / (2 * MII_SPEED).
* Then MII_SPEED = system_clock / 2 * 2,5 MHz.
*
* All MII configuration is done via FEC1 registers:
*/
immr->im_cpm.cp_fec1.fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
#if defined(CONFIG_NETTA) || defined(CONFIG_NETPHONE) || defined(CONFIG_NETTA2)
{
volatile fec_t *fecp;
/*
* only two FECs please
*/
if ((unsigned int)fecidx >= 2)
hang();
if (fecidx == 0)
fecp = &immr->im_cpm.cp_fec1;
else
fecp = &immr->im_cpm.cp_fec2;
/* our PHYs are the limit at 2.5 MHz */
fecp->fec_mii_speed <<= 1;
}
#endif
#if defined(CONFIG_MPC885_FAMILY) && defined(WANT_MII)
/* use MDC for MII */
immr->im_ioport.iop_pdpar |= 0x0080;
immr->im_ioport.iop_pddir &= ~0x0080;
#endif
if (fecidx == 0) {
#if defined(CONFIG_ETHER_ON_FEC1)
#if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
#if !defined(CONFIG_RMII)
immr->im_ioport.iop_papar |= 0xf830;
immr->im_ioport.iop_padir |= 0x0830;
immr->im_ioport.iop_padir &= ~0xf000;
immr->im_cpm.cp_pbpar |= 0x00001001;
immr->im_cpm.cp_pbdir &= ~0x00001001;
immr->im_ioport.iop_pcpar |= 0x000c;
immr->im_ioport.iop_pcdir &= ~0x000c;
immr->im_cpm.cp_pepar |= 0x00000003;
immr->im_cpm.cp_pedir |= 0x00000003;
immr->im_cpm.cp_peso &= ~0x00000003;
immr->im_cpm.cp_cptr &= ~0x00000100;
#else
#if !defined(CONFIG_FEC1_PHY_NORXERR)
immr->im_ioport.iop_papar |= 0x1000;
immr->im_ioport.iop_padir &= ~0x1000;
#endif
immr->im_ioport.iop_papar |= 0xe810;
immr->im_ioport.iop_padir |= 0x0810;
immr->im_ioport.iop_padir &= ~0xe000;
immr->im_cpm.cp_pbpar |= 0x00000001;
immr->im_cpm.cp_pbdir &= ~0x00000001;
immr->im_cpm.cp_cptr |= 0x00000100;
immr->im_cpm.cp_cptr &= ~0x00000050;
#endif /* !CONFIG_RMII */
#elif !defined(CONFIG_ICU862)
/*
* Configure all of port D for MII.
*/
immr->im_ioport.iop_pdpar = 0x1fff;
/*
* Bits moved from Rev. D onward
*/
if ((get_immr(0) & 0xffff) < 0x0501)
immr->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
else
immr->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
#else
/*
* Configure port A for MII.
*/
#if defined(CONFIG_ICU862) && defined(CONFIG_SYS_DISCOVER_PHY)
/*
* On the ICU862 board the MII-MDC pin is routed to PD8 pin
* * of CPU, so for this board we need to configure Utopia and
* * enable PD8 to MII-MDC function
*/
immr->im_ioport.iop_pdpar |= 0x4080;
#endif
/*
* Has Utopia been configured?
*/
if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
/*
* YES - Use MUXED mode for UTOPIA bus.
* This frees Port A for use by MII (see 862UM table 41-6).
*/
immr->im_ioport.utmode &= ~0x80;
} else {
/*
* NO - set SPLIT mode for UTOPIA bus.
*
* This doesn't really effect UTOPIA (which isn't
* enabled anyway) but just tells the 862
* to use port A for MII (see 862UM table 41-6).
*/
immr->im_ioport.utmode |= 0x80;
}
#endif /* !defined(CONFIG_ICU862) */
#endif /* CONFIG_ETHER_ON_FEC1 */
} else if (fecidx == 1) {
#if defined(CONFIG_ETHER_ON_FEC2)
#if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
#if !defined(CONFIG_RMII)
immr->im_cpm.cp_pepar |= 0x0003fffc;
immr->im_cpm.cp_pedir |= 0x0003fffc;
immr->im_cpm.cp_peso &= ~0x000087fc;
immr->im_cpm.cp_peso |= 0x00037800;
immr->im_cpm.cp_cptr &= ~0x00000080;
#else
#if !defined(CONFIG_FEC2_PHY_NORXERR)
immr->im_cpm.cp_pepar |= 0x00000010;
immr->im_cpm.cp_pedir |= 0x00000010;
immr->im_cpm.cp_peso &= ~0x00000010;
#endif
immr->im_cpm.cp_pepar |= 0x00039620;
immr->im_cpm.cp_pedir |= 0x00039620;
immr->im_cpm.cp_peso |= 0x00031000;
immr->im_cpm.cp_peso &= ~0x00008620;
immr->im_cpm.cp_cptr |= 0x00000080;
immr->im_cpm.cp_cptr &= ~0x00000028;
#endif /* CONFIG_RMII */
#endif /* CONFIG_MPC885_FAMILY */
#endif /* CONFIG_ETHER_ON_FEC2 */
}
}
static int fec_reset(volatile fec_t *fecp)
{
int i;
/* Whack a reset.
* A delay is required between a reset of the FEC block and
* initialization of other FEC registers because the reset takes
* some time to complete. If you don't delay, subsequent writes
* to FEC registers might get killed by the reset routine which is
* still in progress.
*/
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
for (i = 0;
(fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
++i) {
udelay (1);
}
if (i == FEC_RESET_DELAY)
return -1;
return 0;
}
static int fec_init (struct eth_device *dev, bd_t * bd)
{
struct ether_fcc_info_s *efis = dev->priv;
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
volatile fec_t *fecp =
(volatile fec_t *) (CONFIG_SYS_IMMR + efis->fecp_offset);
int i;
if (efis->ether_index == 0) {
#if defined(CONFIG_FADS) /* FADS family uses FPGA (BCSR) to control PHYs */
#if defined(CONFIG_MPC885ADS)
*(vu_char *) BCSR5 &= ~(BCSR5_MII1_EN | BCSR5_MII1_RST);
#else
/* configure FADS for fast (FEC) ethernet, half-duplex */
/* The LXT970 needs about 50ms to recover from reset, so
* wait for it by discovering the PHY before leaving eth_init().
*/
{
volatile uint *bcsr4 = (volatile uint *) BCSR4;
*bcsr4 = (*bcsr4 & ~(BCSR4_FETH_EN | BCSR4_FETHCFG1))
| (BCSR4_FETHCFG0 | BCSR4_FETHFDE |
BCSR4_FETHRST);
/* reset the LXT970 PHY */
*bcsr4 &= ~BCSR4_FETHRST;
udelay (10);
*bcsr4 |= BCSR4_FETHRST;
udelay (10);
}
#endif /* CONFIG_MPC885ADS */
#endif /* CONFIG_FADS */
}
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
/* the MII interface is connected to FEC1
* so for the miiphy_xxx function to work we must
* call mii_init since fec_halt messes the thing up
*/
if (efis->ether_index != 0)
__mii_init();
#endif
if (fec_reset(fecp) < 0)
printf ("FEC_RESET_DELAY timeout\n");
/* We use strictly polling mode only
*/
fecp->fec_imask = 0;
/* Clear any pending interrupt
*/
fecp->fec_ievent = 0xffc0;
/* No need to set the IVEC register */
/* Set station address
*/
#define ea dev->enetaddr
fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
fecp->fec_addr_high = (ea[4] << 8) | (ea[5]);
#undef ea
#if defined(CONFIG_CMD_CDP)
/*
* Turn on multicast address hash table
*/
fecp->fec_hash_table_high = 0xffffffff;
fecp->fec_hash_table_low = 0xffffffff;
#else
/* Clear multicast address hash table
*/
fecp->fec_hash_table_high = 0;
fecp->fec_hash_table_low = 0;
#endif
/* Set maximum receive buffer size.
*/
fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
/* Set maximum frame length
*/
fecp->fec_r_hash = PKT_MAXBUF_SIZE;
/*
* Setup Buffers and Buffer Desriptors
*/
rxIdx = 0;
txIdx = 0;
if (!rtx) {
#ifdef CONFIG_SYS_ALLOC_DPRAM
rtx = (RTXBD *) (immr->im_cpm.cp_dpmem +
dpram_alloc_align (sizeof (RTXBD), 8));
#else
rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_FEC_BASE);
#endif
}
/*
* Setup Receiver Buffer Descriptors (13.14.24.18)
* Settings:
* Empty, Wrap
*/
for (i = 0; i < PKTBUFSRX; i++) {
rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
rtx->rxbd[i].cbd_datlen = 0; /* Reset */
rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
}
rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
/*
* Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
* Settings:
* Last, Tx CRC
*/
for (i = 0; i < TX_BUF_CNT; i++) {
rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
rtx->txbd[i].cbd_datlen = 0; /* Reset */
rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
}
rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
/* Set receive and transmit descriptor base
*/
fecp->fec_r_des_start = (unsigned int) (&rtx->rxbd[0]);
fecp->fec_x_des_start = (unsigned int) (&rtx->txbd[0]);
/* Enable MII mode
*/
#if 0 /* Full duplex mode */
fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE;
fecp->fec_x_cntrl = FEC_TCNTRL_FDEN;
#else /* Half duplex mode */
fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE | FEC_RCNTRL_DRT;
fecp->fec_x_cntrl = 0;
#endif
/* Enable big endian and don't care about SDMA FC.
*/
fecp->fec_fun_code = 0x78000000;
/*
* Setup the pin configuration of the FEC
*/
fec_pin_init (efis->ether_index);
rxIdx = 0;
txIdx = 0;
/*
* Now enable the transmit and receive processing
*/
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
if (efis->phy_addr == -1) {
#ifdef CONFIG_SYS_DISCOVER_PHY
/*
* wait for the PHY to wake up after reset
*/
efis->actual_phy_addr = mii_discover_phy (dev);
if (efis->actual_phy_addr == -1) {
printf ("Unable to discover phy!\n");
return -1;
}
#else
efis->actual_phy_addr = -1;
#endif
} else {
efis->actual_phy_addr = efis->phy_addr;
}
#if defined(CONFIG_MII) && defined(CONFIG_RMII)
/*
* adapt the RMII speed to the speed of the phy
*/
if (miiphy_speed (dev->name, efis->actual_phy_addr) == _100BASET) {
fec_100Mbps (dev);
} else {
fec_10Mbps (dev);
}
#endif
#if defined(CONFIG_MII)
/*
* adapt to the half/full speed settings
*/
if (miiphy_duplex (dev->name, efis->actual_phy_addr) == FULL) {
fec_full_duplex (dev);
} else {
fec_half_duplex (dev);
}
#endif
/* And last, try to fill Rx Buffer Descriptors */
fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
efis->initialized = 1;
return 0;
}
static void fec_halt(struct eth_device* dev)
{
struct ether_fcc_info_s *efis = dev->priv;
volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
int i;
/* avoid halt if initialized; mii gets stuck otherwise */
if (!efis->initialized)
return;
/* Whack a reset.
* A delay is required between a reset of the FEC block and
* initialization of other FEC registers because the reset takes
* some time to complete. If you don't delay, subsequent writes
* to FEC registers might get killed by the reset routine which is
* still in progress.
*/
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
for (i = 0;
(fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
++i) {
udelay (1);
}
if (i == FEC_RESET_DELAY) {
printf ("FEC_RESET_DELAY timeout\n");
return;
}
efis->initialized = 0;
}
#if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
/* 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))
/* Interrupt events/masks.
*/
#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
#define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
#define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */
#define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
#define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */
#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
/* 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_DM9161 0x0181B880 /* Davicom DM9161 */
#define PHY_ID_KSM8995M 0x00221450 /* MICREL KS8995MA */
/* send command to phy using mii, wait for result */
static uint
mii_send(uint mii_cmd)
{
uint mii_reply;
volatile fec_t *ep;
int cnt;
ep = &(((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_fec);
ep->fec_mii_data = mii_cmd; /* command to phy */
/* wait for mii complete */
cnt = 0;
while (!(ep->fec_ievent & FEC_ENET_MII)) {
if (++cnt > 1000) {
printf("mii_send STUCK!\n");
break;
}
}
mii_reply = ep->fec_mii_data; /* result from phy */
ep->fec_ievent = FEC_ENET_MII; /* clear MII complete */
#if 0
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
#if defined(CONFIG_SYS_DISCOVER_PHY)
static int mii_discover_phy(struct eth_device *dev)
{
#define MAX_PHY_PASSES 11
uint phyno;
int pass;
uint phytype;
int phyaddr;
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, MII_PHYSID2));
#ifdef ET_DEBUG
printf("PHY type 0x%x pass %d type ", phytype, pass);
#endif
if (phytype != 0xffff) {
phyaddr = phyno;
phytype |= mii_send(mk_mii_read(phyno,
MII_PHYSID1)) << 16;
#ifdef ET_DEBUG
printf("PHY @ 0x%x pass %d type ",phyno,pass);
switch (phytype & 0xfffffff0) {
case PHY_ID_LXT970:
printf("LXT970\n");
break;
case PHY_ID_LXT971:
printf("LXT971\n");
break;
case PHY_ID_82555:
printf("82555\n");
break;
case PHY_ID_QS6612:
printf("QS6612\n");
break;
case PHY_ID_AMD79C784:
printf("AMD79C784\n");
break;
case PHY_ID_LSI80225B:
printf("LSI L80225/B\n");
break;
case PHY_ID_DM9161:
printf("Davicom DM9161\n");
break;
case PHY_ID_KSM8995M:
printf("MICREL KS8995M\n");
break;
default:
printf("0x%08x\n", phytype);
break;
}
#endif
}
}
}
if (phyaddr < 0) {
printf("No PHY device found.\n");
}
return phyaddr;
}
#endif /* CONFIG_SYS_DISCOVER_PHY */
#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) && !defined(CONFIG_BITBANGMII)
/****************************************************************************
* mii_init -- Initialize the MII via FEC 1 for MII command without ethernet
* This function is a subset of eth_init
****************************************************************************
*/
static void __mii_init(void)
{
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
if (fec_reset(fecp) < 0)
printf ("FEC_RESET_DELAY timeout\n");
/* We use strictly polling mode only
*/
fecp->fec_imask = 0;
/* Clear any pending interrupt
*/
fecp->fec_ievent = 0xffc0;
/* Now enable the transmit and receive processing
*/
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
}
void mii_init (void)
{
int i;
__mii_init();
/* Setup the pin configuration of the FEC(s)
*/
for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++)
fec_pin_init(ether_fcc_info[i].ether_index);
}
/*****************************************************************************
* 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 fec8xx_miiphy_read(const 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 fec8xx_miiphy_write(const char *devname, unsigned char addr,
unsigned char reg, unsigned short value)
{
#ifdef MII_DEBUG
printf ("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
#endif
(void)mii_send(mk_mii_write(addr, reg, value));
#ifdef MII_DEBUG
printf ("0x%04x\n", value);
#endif
return 0;
}
#endif
#endif
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