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u-boot-brain/drivers/net/mcffec.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2007 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
*
* Conversion to DM
* (C) 2019 Angelo Dureghello <angelo.dureghello@timesys.com>
*/
#include <common.h>
#include <env.h>
#include <hang.h>
#include <malloc.h>
#include <command.h>
#include <net.h>
#include <miiphy.h>
#include <asm/fec.h>
#include <asm/immap.h>
#include <linux/delay.h>
#include <linux/mii.h>
#undef ET_DEBUG
#undef MII_DEBUG
/* Ethernet Transmit and Receive Buffers */
#define DBUF_LENGTH 1520
#define TX_BUF_CNT 2
#define PKT_MAXBUF_SIZE 1518
#define PKT_MAXBLR_SIZE 1520
#define LAST_PKTBUFSRX PKTBUFSRX - 1
#define BD_ENET_RX_W_E (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY)
#define BD_ENET_TX_RDY_LST (BD_ENET_TX_READY | BD_ENET_TX_LAST)
DECLARE_GLOBAL_DATA_PTR;
static void init_eth_info(struct fec_info_s *info)
{
#ifdef CONFIG_SYS_FEC_BUF_USE_SRAM
static u32 tmp;
if (info->index == 0)
tmp = CONFIG_SYS_INIT_RAM_ADDR + 0x1000;
else
info->rxbd = (cbd_t *)DBUF_LENGTH;
/* setup Receive and Transmit buffer descriptor */
info->rxbd = (cbd_t *)((u32)info->rxbd + tmp);
tmp = (u32)info->rxbd;
info->txbd =
(cbd_t *)((u32)info->txbd + tmp +
(PKTBUFSRX * sizeof(cbd_t)));
tmp = (u32)info->txbd;
info->txbuf =
(char *)((u32)info->txbuf + tmp +
(CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t)));
tmp = (u32)info->txbuf;
#else
info->rxbd =
(cbd_t *)memalign(CONFIG_SYS_CACHELINE_SIZE,
(PKTBUFSRX * sizeof(cbd_t)));
info->txbd =
(cbd_t *)memalign(CONFIG_SYS_CACHELINE_SIZE,
(TX_BUF_CNT * sizeof(cbd_t)));
info->txbuf =
(char *)memalign(CONFIG_SYS_CACHELINE_SIZE, DBUF_LENGTH);
#endif
#ifdef ET_DEBUG
printf("rxbd %x txbd %x\n", (int)info->rxbd, (int)info->txbd);
#endif
info->phy_name = (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, 32);
}
static void fec_reset(struct fec_info_s *info)
{
volatile fec_t *fecp = (fec_t *)(info->iobase);
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");
}
static void set_fec_duplex_speed(volatile fec_t *fecp, int dup_spd)
{
struct bd_info *bd = gd->bd;
if ((dup_spd >> 16) == FULL) {
/* Set maximum frame length */
fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE |
FEC_RCR_PROM | 0x100;
fecp->tcr = FEC_TCR_FDEN;
} else {
/* Half duplex mode */
fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) |
FEC_RCR_MII_MODE | FEC_RCR_DRT;
fecp->tcr &= ~FEC_TCR_FDEN;
}
if ((dup_spd & 0xFFFF) == _100BASET) {
#ifdef CONFIG_MCF5445x
fecp->rcr &= ~0x200; /* disabled 10T base */
#endif
#ifdef MII_DEBUG
printf("100Mbps\n");
#endif
bd->bi_ethspeed = 100;
} else {
#ifdef CONFIG_MCF5445x
fecp->rcr |= 0x200; /* enabled 10T base */
#endif
#ifdef MII_DEBUG
printf("10Mbps\n");
#endif
bd->bi_ethspeed = 10;
}
}
#ifdef ET_DEBUG
static void dbg_fec_regs(struct udevice *dev)
{
struct fec_info_s *info = dev_get_priv(dev);
volatile fec_t *fecp = (fec_t *)(info->iobase);
printf("=====\n");
printf("ievent %x - %x\n", (int)&fecp->eir, fecp->eir);
printf("imask %x - %x\n", (int)&fecp->eimr, fecp->eimr);
printf("r_des_active %x - %x\n", (int)&fecp->rdar, fecp->rdar);
printf("x_des_active %x - %x\n", (int)&fecp->tdar, fecp->tdar);
printf("ecntrl %x - %x\n", (int)&fecp->ecr, fecp->ecr);
printf("mii_mframe %x - %x\n", (int)&fecp->mmfr, fecp->mmfr);
printf("mii_speed %x - %x\n", (int)&fecp->mscr, fecp->mscr);
printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc);
printf("r_cntrl %x - %x\n", (int)&fecp->rcr, fecp->rcr);
printf("x_cntrl %x - %x\n", (int)&fecp->tcr, fecp->tcr);
printf("padr_l %x - %x\n", (int)&fecp->palr, fecp->palr);
printf("padr_u %x - %x\n", (int)&fecp->paur, fecp->paur);
printf("op_pause %x - %x\n", (int)&fecp->opd, fecp->opd);
printf("iadr_u %x - %x\n", (int)&fecp->iaur, fecp->iaur);
printf("iadr_l %x - %x\n", (int)&fecp->ialr, fecp->ialr);
printf("gadr_u %x - %x\n", (int)&fecp->gaur, fecp->gaur);
printf("gadr_l %x - %x\n", (int)&fecp->galr, fecp->galr);
printf("x_wmrk %x - %x\n", (int)&fecp->tfwr, fecp->tfwr);
printf("r_bound %x - %x\n", (int)&fecp->frbr, fecp->frbr);
printf("r_fstart %x - %x\n", (int)&fecp->frsr, fecp->frsr);
printf("r_drng %x - %x\n", (int)&fecp->erdsr, fecp->erdsr);
printf("x_drng %x - %x\n", (int)&fecp->etdsr, fecp->etdsr);
printf("r_bufsz %x - %x\n", (int)&fecp->emrbr, fecp->emrbr);
printf("\n");
printf("rmon_t_drop %x - %x\n", (int)&fecp->rmon_t_drop,
fecp->rmon_t_drop);
printf("rmon_t_packets %x - %x\n", (int)&fecp->rmon_t_packets,
fecp->rmon_t_packets);
printf("rmon_t_bc_pkt %x - %x\n", (int)&fecp->rmon_t_bc_pkt,
fecp->rmon_t_bc_pkt);
printf("rmon_t_mc_pkt %x - %x\n", (int)&fecp->rmon_t_mc_pkt,
fecp->rmon_t_mc_pkt);
printf("rmon_t_crc_align %x - %x\n", (int)&fecp->rmon_t_crc_align,
fecp->rmon_t_crc_align);
printf("rmon_t_undersize %x - %x\n", (int)&fecp->rmon_t_undersize,
fecp->rmon_t_undersize);
printf("rmon_t_oversize %x - %x\n", (int)&fecp->rmon_t_oversize,
fecp->rmon_t_oversize);
printf("rmon_t_frag %x - %x\n", (int)&fecp->rmon_t_frag,
fecp->rmon_t_frag);
printf("rmon_t_jab %x - %x\n", (int)&fecp->rmon_t_jab,
fecp->rmon_t_jab);
printf("rmon_t_col %x - %x\n", (int)&fecp->rmon_t_col,
fecp->rmon_t_col);
printf("rmon_t_p64 %x - %x\n", (int)&fecp->rmon_t_p64,
fecp->rmon_t_p64);
printf("rmon_t_p65to127 %x - %x\n", (int)&fecp->rmon_t_p65to127,
fecp->rmon_t_p65to127);
printf("rmon_t_p128to255 %x - %x\n", (int)&fecp->rmon_t_p128to255,
fecp->rmon_t_p128to255);
printf("rmon_t_p256to511 %x - %x\n", (int)&fecp->rmon_t_p256to511,
fecp->rmon_t_p256to511);
printf("rmon_t_p512to1023 %x - %x\n", (int)&fecp->rmon_t_p512to1023,
fecp->rmon_t_p512to1023);
printf("rmon_t_p1024to2047 %x - %x\n", (int)&fecp->rmon_t_p1024to2047,
fecp->rmon_t_p1024to2047);
printf("rmon_t_p_gte2048 %x - %x\n", (int)&fecp->rmon_t_p_gte2048,
fecp->rmon_t_p_gte2048);
printf("rmon_t_octets %x - %x\n", (int)&fecp->rmon_t_octets,
fecp->rmon_t_octets);
printf("\n");
printf("ieee_t_drop %x - %x\n", (int)&fecp->ieee_t_drop,
fecp->ieee_t_drop);
printf("ieee_t_frame_ok %x - %x\n", (int)&fecp->ieee_t_frame_ok,
fecp->ieee_t_frame_ok);
printf("ieee_t_1col %x - %x\n", (int)&fecp->ieee_t_1col,
fecp->ieee_t_1col);
printf("ieee_t_mcol %x - %x\n", (int)&fecp->ieee_t_mcol,
fecp->ieee_t_mcol);
printf("ieee_t_def %x - %x\n", (int)&fecp->ieee_t_def,
fecp->ieee_t_def);
printf("ieee_t_lcol %x - %x\n", (int)&fecp->ieee_t_lcol,
fecp->ieee_t_lcol);
printf("ieee_t_excol %x - %x\n", (int)&fecp->ieee_t_excol,
fecp->ieee_t_excol);
printf("ieee_t_macerr %x - %x\n", (int)&fecp->ieee_t_macerr,
fecp->ieee_t_macerr);
printf("ieee_t_cserr %x - %x\n", (int)&fecp->ieee_t_cserr,
fecp->ieee_t_cserr);
printf("ieee_t_sqe %x - %x\n", (int)&fecp->ieee_t_sqe,
fecp->ieee_t_sqe);
printf("ieee_t_fdxfc %x - %x\n", (int)&fecp->ieee_t_fdxfc,
fecp->ieee_t_fdxfc);
printf("ieee_t_octets_ok %x - %x\n", (int)&fecp->ieee_t_octets_ok,
fecp->ieee_t_octets_ok);
printf("\n");
printf("rmon_r_drop %x - %x\n", (int)&fecp->rmon_r_drop,
fecp->rmon_r_drop);
printf("rmon_r_packets %x - %x\n", (int)&fecp->rmon_r_packets,
fecp->rmon_r_packets);
printf("rmon_r_bc_pkt %x - %x\n", (int)&fecp->rmon_r_bc_pkt,
fecp->rmon_r_bc_pkt);
printf("rmon_r_mc_pkt %x - %x\n", (int)&fecp->rmon_r_mc_pkt,
fecp->rmon_r_mc_pkt);
printf("rmon_r_crc_align %x - %x\n", (int)&fecp->rmon_r_crc_align,
fecp->rmon_r_crc_align);
printf("rmon_r_undersize %x - %x\n", (int)&fecp->rmon_r_undersize,
fecp->rmon_r_undersize);
printf("rmon_r_oversize %x - %x\n", (int)&fecp->rmon_r_oversize,
fecp->rmon_r_oversize);
printf("rmon_r_frag %x - %x\n", (int)&fecp->rmon_r_frag,
fecp->rmon_r_frag);
printf("rmon_r_jab %x - %x\n", (int)&fecp->rmon_r_jab,
fecp->rmon_r_jab);
printf("rmon_r_p64 %x - %x\n", (int)&fecp->rmon_r_p64,
fecp->rmon_r_p64);
printf("rmon_r_p65to127 %x - %x\n", (int)&fecp->rmon_r_p65to127,
fecp->rmon_r_p65to127);
printf("rmon_r_p128to255 %x - %x\n", (int)&fecp->rmon_r_p128to255,
fecp->rmon_r_p128to255);
printf("rmon_r_p256to511 %x - %x\n", (int)&fecp->rmon_r_p256to511,
fecp->rmon_r_p256to511);
printf("rmon_r_p512to1023 %x - %x\n", (int)&fecp->rmon_r_p512to1023,
fecp->rmon_r_p512to1023);
printf("rmon_r_p1024to2047 %x - %x\n", (int)&fecp->rmon_r_p1024to2047,
fecp->rmon_r_p1024to2047);
printf("rmon_r_p_gte2048 %x - %x\n", (int)&fecp->rmon_r_p_gte2048,
fecp->rmon_r_p_gte2048);
printf("rmon_r_octets %x - %x\n", (int)&fecp->rmon_r_octets,
fecp->rmon_r_octets);
printf("\n");
printf("ieee_r_drop %x - %x\n", (int)&fecp->ieee_r_drop,
fecp->ieee_r_drop);
printf("ieee_r_frame_ok %x - %x\n", (int)&fecp->ieee_r_frame_ok,
fecp->ieee_r_frame_ok);
printf("ieee_r_crc %x - %x\n", (int)&fecp->ieee_r_crc,
fecp->ieee_r_crc);
printf("ieee_r_align %x - %x\n", (int)&fecp->ieee_r_align,
fecp->ieee_r_align);
printf("ieee_r_macerr %x - %x\n", (int)&fecp->ieee_r_macerr,
fecp->ieee_r_macerr);
printf("ieee_r_fdxfc %x - %x\n", (int)&fecp->ieee_r_fdxfc,
fecp->ieee_r_fdxfc);
printf("ieee_r_octets_ok %x - %x\n", (int)&fecp->ieee_r_octets_ok,
fecp->ieee_r_octets_ok);
printf("\n\n\n");
}
#endif
int mcffec_init(struct udevice *dev)
{
struct fec_info_s *info = dev_get_priv(dev);
volatile fec_t *fecp = (fec_t *) (info->iobase);
int rval, i;
uchar ea[6];
fecpin_setclear(info, 1);
fec_reset(info);
#if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \
defined (CONFIG_SYS_DISCOVER_PHY)
mii_init();
set_fec_duplex_speed(fecp, info->dup_spd);
#else
#ifndef CONFIG_SYS_DISCOVER_PHY
set_fec_duplex_speed(fecp, (FECDUPLEX << 16) | FECSPEED);
#endif /* ifndef CONFIG_SYS_DISCOVER_PHY */
#endif /* CONFIG_CMD_MII || CONFIG_MII */
/* We use strictly polling mode only */
fecp->eimr = 0;
/* Clear any pending interrupt */
fecp->eir = 0xffffffff;
/* Set station address */
if (info->index == 0)
rval = eth_env_get_enetaddr("ethaddr", ea);
else
rval = eth_env_get_enetaddr("eth1addr", ea);
if (!rval) {
puts("Please set a valid MAC address\n");
return -EINVAL;
}
fecp->palr =
(ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
fecp->paur = (ea[4] << 24) | (ea[5] << 16);
/* Clear unicast address hash table */
fecp->iaur = 0;
fecp->ialr = 0;
/* Clear multicast address hash table */
fecp->gaur = 0;
fecp->galr = 0;
/* Set maximum receive buffer size. */
fecp->emrbr = PKT_MAXBLR_SIZE;
/*
* Setup Buffers and Buffer Descriptors
*/
info->rx_idx = 0;
info->tx_idx = 0;
/*
* Setup Receiver Buffer Descriptors (13.14.24.18)
* Settings:
* Empty, Wrap
*/
for (i = 0; i < PKTBUFSRX; i++) {
info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
info->rxbd[i].cbd_datlen = 0; /* Reset */
info->rxbd[i].cbd_bufaddr = (uint) net_rx_packets[i];
}
info->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++) {
info->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
info->txbd[i].cbd_datlen = 0; /* Reset */
info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]);
}
info->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
/* Set receive and transmit descriptor base */
fecp->erdsr = (unsigned int)(&info->rxbd[0]);
fecp->etdsr = (unsigned int)(&info->txbd[0]);
/* Now enable the transmit and receive processing */
fecp->ecr |= FEC_ECR_ETHER_EN;
/* And last, try to fill Rx Buffer Descriptors
* Descriptor polling active
*/
fecp->rdar = 0x01000000;
return 0;
}
static int mcffec_send(struct udevice *dev, void *packet, int length)
{
struct fec_info_s *info = dev_get_priv(dev);
volatile fec_t *fecp = (fec_t *)info->iobase;
int j, rc;
u16 phy_status;
miiphy_read(dev->name, info->phy_addr, MII_BMSR, &phy_status);
/* section 16.9.23.3
* Wait for ready
*/
j = 0;
while ((info->txbd[info->tx_idx].cbd_sc & BD_ENET_TX_READY) &&
(j < info->to_loop)) {
udelay(1);
j++;
}
if (j >= info->to_loop)
printf("TX not ready\n");
info->txbd[info->tx_idx].cbd_bufaddr = (uint)packet;
info->txbd[info->tx_idx].cbd_datlen = length;
info->txbd[info->tx_idx].cbd_sc |= BD_ENET_TX_RDY_LST;
/* Activate transmit Buffer Descriptor polling */
fecp->tdar = 0x01000000; /* Descriptor polling active */
#ifndef CONFIG_SYS_FEC_BUF_USE_SRAM
/*
* FEC unable to initial transmit data packet.
* A nop will ensure the descriptor polling active completed.
* CF Internal RAM has shorter cycle access than DRAM. If use
* DRAM as Buffer descriptor and data, a nop is a must.
* Affect only V2 and V3.
*/
__asm__ ("nop");
#endif
#ifdef CONFIG_SYS_UNIFY_CACHE
icache_invalid();
#endif
j = 0;
while ((info->txbd[info->tx_idx].cbd_sc & BD_ENET_TX_READY) &&
(j < info->to_loop)) {
udelay(1);
j++;
}
if (j >= info->to_loop)
printf("TX timeout\n");
#ifdef ET_DEBUG
printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
__FILE__, __LINE__, __func__, j,
info->txbd[info->tx_idx].cbd_sc,
(info->txbd[info->tx_idx].cbd_sc & 0x003C) >> 2);
#endif
/* return only status bits */
rc = (info->txbd[info->tx_idx].cbd_sc & BD_ENET_TX_STATS);
info->tx_idx = (info->tx_idx + 1) % TX_BUF_CNT;
return rc;
}
static int mcffec_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct fec_info_s *info = dev_get_priv(dev);
volatile fec_t *fecp = (fec_t *)info->iobase;
int length = -1;
for (;;) {
#ifdef CONFIG_SYS_UNIFY_CACHE
icache_invalid();
#endif
/* If nothing received - leave for() loop */
if (info->rxbd[info->rx_idx].cbd_sc & BD_ENET_RX_EMPTY)
break;
length = info->rxbd[info->rx_idx].cbd_datlen;
if (info->rxbd[info->rx_idx].cbd_sc & 0x003f) {
printf("%s[%d] err: %x\n",
__func__, __LINE__,
info->rxbd[info->rx_idx].cbd_sc);
} else {
length -= 4;
/*
* Pass the buffer ptr up to the protocol layers.
*/
*packetp = net_rx_packets[info->rx_idx];
fecp->eir |= FEC_EIR_RXF;
}
/* Give the buffer back to the FEC. */
info->rxbd[info->rx_idx].cbd_datlen = 0;
/* wrap around buffer index when necessary */
if (info->rx_idx == LAST_PKTBUFSRX) {
info->rxbd[PKTBUFSRX - 1].cbd_sc = BD_ENET_RX_W_E;
info->rx_idx = 0;
} else {
info->rxbd[info->rx_idx].cbd_sc = BD_ENET_RX_EMPTY;
info->rx_idx++;
}
/* Try to fill Buffer Descriptors
* Descriptor polling active
*/
fecp->rdar = 0x01000000;
}
return length;
}
static void mcffec_halt(struct udevice *dev)
{
struct fec_info_s *info = dev_get_priv(dev);
fec_reset(info);
fecpin_setclear(info, 0);
info->rx_idx = 0;
info->tx_idx = 0;
memset(info->rxbd, 0, PKTBUFSRX * sizeof(cbd_t));
memset(info->txbd, 0, TX_BUF_CNT * sizeof(cbd_t));
memset(info->txbuf, 0, DBUF_LENGTH);
}
static const struct eth_ops mcffec_ops = {
.start = mcffec_init,
.send = mcffec_send,
.recv = mcffec_recv,
.stop = mcffec_halt,
};
/*
* Boot sequence, called just after mcffec_of_to_plat,
* as DM way, it replaces old mcffec_initialize.
*/
static int mcffec_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct fec_info_s *info = dev_get_priv(dev);
int node = dev_of_offset(dev);
int retval, fec_idx;
const u32 *val;
info->index = dev_seq(dev);
info->iobase = pdata->iobase;
info->phy_addr = -1;
val = fdt_getprop(gd->fdt_blob, node, "mii-base", NULL);
if (val) {
u32 fec_iobase;
fec_idx = fdt32_to_cpu(*val);
if (fec_idx == info->index) {
fec_iobase = info->iobase;
} else {
printf("mii base != base address, fec_idx %d\n",
fec_idx);
retval = fec_get_base_addr(fec_idx, &fec_iobase);
if (retval)
return retval;
}
info->miibase = fec_iobase;
}
val = fdt_getprop(gd->fdt_blob, node, "phy-addr", NULL);
if (val)
info->phy_addr = fdt32_to_cpu(*val);
val = fdt_getprop(gd->fdt_blob, node, "timeout-loop", NULL);
if (val)
info->to_loop = fdt32_to_cpu(*val);
init_eth_info(info);
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
info->bus = mdio_alloc();
if (!info->bus)
return -ENOMEM;
strcpy(info->bus->name, dev->name);
info->bus->read = mcffec_miiphy_read;
info->bus->write = mcffec_miiphy_write;
retval = mdio_register(info->bus);
if (retval < 0)
return retval;
#endif
return 0;
}
static int mcffec_remove(struct udevice *dev)
{
struct fec_info_s *priv = dev_get_priv(dev);
mdio_unregister(priv->bus);
mdio_free(priv->bus);
return 0;
}
/*
* Boot sequence, called 1st
*/
static int mcffec_of_to_plat(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
const u32 *val;
pdata->iobase = dev_read_addr(dev);
/* Default to 10Mbit/s */
pdata->max_speed = 10;
val = fdt_getprop(gd->fdt_blob, dev_of_offset(dev),
"max-speed", NULL);
if (val)
pdata->max_speed = fdt32_to_cpu(*val);
return 0;
}
static const struct udevice_id mcffec_ids[] = {
{ .compatible = "fsl,mcf-fec" },
{ }
};
U_BOOT_DRIVER(mcffec) = {
.name = "mcffec",
.id = UCLASS_ETH,
.of_match = mcffec_ids,
.of_to_plat = mcffec_of_to_plat,
.probe = mcffec_probe,
.remove = mcffec_remove,
.ops = &mcffec_ops,
.priv_auto = sizeof(struct fec_info_s),
.plat_auto = sizeof(struct eth_pdata),
};
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