u-boot/drivers/net/npcm750_eth.c
Jim Liu 52503d8135 net: nuvoton : Add NPCM7xx EMAC driver
NPCM750 provides identical ethernet MAC controllers for WAN/LAN applications.

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
2022-08-08 10:50:20 -04:00

745 lines
18 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2021 Nuvoton Technology Corp.
*/
#include <common.h>
#include <cpu_func.h>
#include <dm.h>
#include <errno.h>
#include <miiphy.h>
#include <malloc.h>
#include <net.h>
#include <regmap.h>
#include <serial.h>
#include <syscon.h>
#include <asm/io.h>
#include <linux/err.h>
#include <linux/iopoll.h>
#define MAC_ADDR_SIZE 6
#define CONFIG_TX_DESCR_NUM 32
#define CONFIG_RX_DESCR_NUM 32
#define TX_TOTAL_BUFSIZE \
((CONFIG_TX_DESCR_NUM + 1) * PKTSIZE_ALIGN + PKTALIGN)
#define RX_TOTAL_BUFSIZE \
((CONFIG_RX_DESCR_NUM + 1) * PKTSIZE_ALIGN + PKTALIGN)
#define CONFIG_MDIO_TIMEOUT (3 * CONFIG_SYS_HZ)
struct npcm750_rxbd {
unsigned int sl;
unsigned int buffer;
unsigned int reserved;
unsigned int next;
} __aligned(ARCH_DMA_MINALIGN);
struct npcm750_txbd {
unsigned int mode;
unsigned int buffer;
unsigned int sl;
unsigned int next;
} __aligned(ARCH_DMA_MINALIGN);
struct emc_regs {
u32 camcmr; /* 0x00 */
u32 camen; /* 0x04 */
u32 cam0m; /* 0x08 */
u32 cam0l; /* 0x0c */
u32 cam1m; /* 0x10 */
u32 cam1l; /* 0x14 */
u32 cam2m; /* 0x18 */
u32 cam2l; /* 0x1c */
u32 cam3m; /* 0x20 */
u32 cam3l; /* 0x24 */
u32 cam4m; /* 0x28 */
u32 cam4l; /* 0x2c */
u32 cam5m; /* 0x30 */
u32 cam5l; /* 0x34 */
u32 cam6m; /* 0x38 */
u32 cam6l; /* 0x3c */
u32 cam7m; /* 0x40 */
u32 cam7l; /* 0x44 */
u32 cam8m; /* 0x48 */
u32 cam8l; /* 0x4c */
u32 cam9m; /* 0x50 */
u32 cam9l; /* 0x54 */
u32 cam10m; /* 0x58 */
u32 cam10l; /* 0x5c */
u32 cam11m; /* 0x60 */
u32 cam11l; /* 0x64 */
u32 cam12m; /* 0x68 */
u32 cam12l; /* 0x6c */
u32 cam13m; /* 0x70 */
u32 cam13l; /* 0x74 */
u32 cam14m; /* 0x78 */
u32 cam14l; /* 0x7c */
u32 cam15m; /* 0x80 */
u32 cam15l; /* 0x84 */
u32 txdlsa; /* 0x88 */
u32 rxdlsa; /* 0x8c */
u32 mcmdr; /* 0x90 */
u32 miid; /* 0x94 */
u32 miida; /* 0x98 */
u32 fftcr; /* 0x9c */
u32 tsdr; /* 0xa0 */
u32 rsdr; /* 0xa4 */
u32 dmarfc; /* 0xa8 */
u32 mien; /* 0xac */
u32 mista; /* 0xb0 */
u32 mgsta; /* 0xb4 */
u32 mpcnt; /* 0xb8 */
u32 mrpc; /* 0xbc */
u32 mrpcc; /* 0xc0 */
u32 mrepc; /* 0xc4 */
u32 dmarfs; /* 0xc8 */
u32 ctxdsa; /* 0xcc */
u32 ctxbsa; /* 0xd0 */
u32 crxdsa; /* 0xd4 */
u32 crxbsa; /* 0xd8 */
};
struct npcm750_eth_dev {
struct npcm750_txbd tdesc[CONFIG_TX_DESCR_NUM] __aligned(ARCH_DMA_MINALIGN);
struct npcm750_rxbd rdesc[CONFIG_RX_DESCR_NUM] __aligned(ARCH_DMA_MINALIGN);
u8 txbuffs[TX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
u8 rxbuffs[RX_TOTAL_BUFSIZE] __aligned(ARCH_DMA_MINALIGN);
struct emc_regs *emc_regs_p;
struct phy_device *phydev;
struct mii_dev *bus;
struct npcm750_txbd *curr_txd;
struct npcm750_rxbd *curr_rxd;
u32 interface;
u32 max_speed;
u32 idx;
struct regmap *gcr_regmap;
};
struct npcm750_eth_pdata {
struct eth_pdata eth_pdata;
};
/* mac controller bit */
#define MCMDR_RXON BIT(0)
#define MCMDR_ACP BIT(3)
#define MCMDR_SPCRC BIT(5)
#define MCMDR_TXON BIT(8)
#define MCMDR_NDEF BIT(9)
#define MCMDR_FDUP BIT(18)
#define MCMDR_ENMDC BIT(19)
#define MCMDR_OPMOD BIT(20)
#define MCMDR_SWR BIT(24)
/* cam command regiser */
#define CAMCMR_AUP 0x01
#define CAMCMR_AMP BIT(1)
#define CAMCMR_ABP BIT(2)
#define CAMCMR_CCAM BIT(3)
#define CAMCMR_ECMP BIT(4)
#define CAM0EN 0x01
/* mac mii controller bit */
#define MDCON BIT(19)
#define PHYAD BIT(8)
#define PHYWR BIT(16)
#define PHYBUSY BIT(17)
#define PHYPRESP BIT(18)
#define CAM_ENTRY_SIZE 0x08
/* rx and tx status */
#define TXDS_TXCP BIT(19)
#define RXDS_CRCE BIT(17)
#define RXDS_PTLE BIT(19)
#define RXDS_RXGD BIT(20)
#define RXDS_ALIE BIT(21)
#define RXDS_RP BIT(22)
/* mac interrupt status*/
#define MISTA_RXINTR BIT(0)
#define MISTA_CRCE BIT(1)
#define MISTA_RXOV BIT(2)
#define MISTA_PTLE BIT(3)
#define MISTA_RXGD BIT(4)
#define MISTA_ALIE BIT(5)
#define MISTA_RP BIT(6)
#define MISTA_MMP BIT(7)
#define MISTA_DFOI BIT(8)
#define MISTA_DENI BIT(9)
#define MISTA_RDU BIT(10)
#define MISTA_RXBERR BIT(11)
#define MISTA_CFR BIT(14)
#define MISTA_TXINTR BIT(16)
#define MISTA_TXEMP BIT(17)
#define MISTA_TXCP BIT(18)
#define MISTA_EXDEF BIT(19)
#define MISTA_NCS BIT(20)
#define MISTA_TXABT BIT(21)
#define MISTA_LC BIT(22)
#define MISTA_TDU BIT(23)
#define MISTA_TXBERR BIT(24)
#define ENSTART 0x01
#define ENRXINTR BIT(0)
#define ENCRCE BIT(1)
#define EMRXOV BIT(2)
#define ENPTLE BIT(3)
#define ENRXGD BIT(4)
#define ENALIE BIT(5)
#define ENRP BIT(6)
#define ENMMP BIT(7)
#define ENDFO BIT(8)
#define ENDENI BIT(9)
#define ENRDU BIT(10)
#define ENRXBERR BIT(11)
#define ENCFR BIT(14)
#define ENTXINTR BIT(16)
#define ENTXEMP BIT(17)
#define ENTXCP BIT(18)
#define ENTXDEF BIT(19)
#define ENNCS BIT(20)
#define ENTXABT BIT(21)
#define ENLC BIT(22)
#define ENTDU BIT(23)
#define ENTXBERR BIT(24)
#define RX_STAT_RBC 0xffff
#define RX_STAT_RXINTR BIT(16)
#define RX_STAT_CRCE BIT(17)
#define RX_STAT_PTLE BIT(19)
#define RX_STAT_RXGD BIT(20)
#define RX_STAT_ALIE BIT(21)
#define RX_STAT_RP BIT(22)
#define RX_STAT_OWNER (BIT(30) | BIT(31))
#define TX_STAT_TBC 0xffff
#define TX_STAT_TXINTR BIT(16)
#define TX_STAT_DEF BIT(17)
#define TX_STAT_TXCP BIT(19)
#define TX_STAT_EXDEF BIT(20)
#define TX_STAT_NCS BIT(21)
#define TX_STAT_TXBT BIT(22)
#define TX_STAT_LC BIT(23)
#define TX_STAT_TXHA BIT(24)
#define TX_STAT_PAU BIT(25)
#define TX_STAT_SQE BIT(26)
/* rx and tx owner bit */
#define RX_OWEN_DMA BIT(31)
#define RX_OWEN_CPU 0x00 //bit 30 & bit 31
#define TX_OWEN_DMA BIT(31)
#define TX_OWEN_CPU (~(BIT(31)))
/* tx frame desc controller bit */
#define MACTXINTEN 0x04
#define CRCMODE 0x02
#define PADDINGMODE 0x01
/* fftcr controller bit */
#define RXTHD 0x03
#define TXTHD (BIT(8) | BIT(9))
#define BLENGTH BIT(21)
/* global setting for driver */
#define RX_DESC_SIZE 128
#define TX_DESC_SIZE 64
#define MAX_RBUFF_SZ 0x600
#define MAX_TBUFF_SZ 0x600
#define TX_TIMEOUT 50
#define DELAY 1000
#define CAM0 0x0
#define RX_POLL_SIZE (RX_DESC_SIZE / 2)
#define MII_TIMEOUT 100
#define GCR_INTCR 0x3c
#define INTCR_R1EN BIT(5)
enum MIIDA_MDCCR_T {
MIIDA_MDCCR_4 = 0x00,
MIIDA_MDCCR_6 = 0x01,
MIIDA_MDCCR_8 = 0x02,
MIIDA_MDCCR_12 = 0x03,
MIIDA_MDCCR_16 = 0x04,
MIIDA_MDCCR_20 = 0x05,
MIIDA_MDCCR_24 = 0x06,
MIIDA_MDCCR_28 = 0x07,
MIIDA_MDCCR_30 = 0x08,
MIIDA_MDCCR_32 = 0x09,
MIIDA_MDCCR_36 = 0x0A,
MIIDA_MDCCR_40 = 0x0B,
MIIDA_MDCCR_44 = 0x0C,
MIIDA_MDCCR_48 = 0x0D,
MIIDA_MDCCR_54 = 0x0E,
MIIDA_MDCCR_60 = 0x0F,
};
DECLARE_GLOBAL_DATA_PTR;
static int npcm750_mdio_read(struct mii_dev *bus, int addr, int devad, int regs)
{
struct npcm750_eth_dev *priv = (struct npcm750_eth_dev *)bus->priv;
struct emc_regs *reg = priv->emc_regs_p;
u32 start, val;
int timeout = CONFIG_MDIO_TIMEOUT;
val = (addr << 0x08) | regs | PHYBUSY | (MIIDA_MDCCR_60 << 20);
writel(val, &reg->miida);
start = get_timer(0);
while (get_timer(start) < timeout) {
if (!(readl(&reg->miida) & PHYBUSY)) {
val = readl(&reg->miid);
return val;
}
udelay(10);
};
return -ETIMEDOUT;
}
static int npcm750_mdio_write(struct mii_dev *bus, int addr, int devad, int regs,
u16 val)
{
struct npcm750_eth_dev *priv = (struct npcm750_eth_dev *)bus->priv;
struct emc_regs *reg = priv->emc_regs_p;
ulong start;
int ret = -ETIMEDOUT, timeout = CONFIG_MDIO_TIMEOUT;
writel(val, &reg->miid);
writel((addr << 0x08) | regs | PHYBUSY | PHYWR | (MIIDA_MDCCR_60 << 20), &reg->miida);
start = get_timer(0);
while (get_timer(start) < timeout) {
if (!(readl(&reg->miida) & PHYBUSY)) {
ret = 0;
break;
}
udelay(10);
};
return ret;
}
static int npcm750_mdio_reset(struct mii_dev *bus)
{
return 0;
}
static int npcm750_mdio_init(const char *name, struct npcm750_eth_dev *priv)
{
struct emc_regs *reg = priv->emc_regs_p;
struct mii_dev *bus = mdio_alloc();
if (!bus) {
printf("Failed to allocate MDIO bus\n");
return -ENOMEM;
}
bus->read = npcm750_mdio_read;
bus->write = npcm750_mdio_write;
snprintf(bus->name, sizeof(bus->name), "%s", name);
bus->reset = npcm750_mdio_reset;
bus->priv = (void *)priv;
writel(readl(&reg->mcmdr) | MCMDR_ENMDC, &reg->mcmdr);
return mdio_register(bus);
}
static void npcm750_tx_descs_init(struct npcm750_eth_dev *priv)
{
struct emc_regs *reg = priv->emc_regs_p;
struct npcm750_txbd *desc_table_p = &priv->tdesc[0];
struct npcm750_txbd *desc_p;
u8 *txbuffs = &priv->txbuffs[0];
u32 idx;
writel((u32)desc_table_p, &reg->txdlsa);
priv->curr_txd = desc_table_p;
for (idx = 0; idx < CONFIG_TX_DESCR_NUM; idx++) {
desc_p = &desc_table_p[idx];
desc_p->buffer = (u32)&txbuffs[idx * PKTSIZE_ALIGN];
desc_p->sl = 0;
desc_p->mode = 0;
desc_p->mode = TX_OWEN_CPU | PADDINGMODE | CRCMODE | MACTXINTEN;
if (idx < (CONFIG_TX_DESCR_NUM - 1))
desc_p->next = (u32)&desc_table_p[idx + 1];
else
desc_p->next = (u32)&priv->tdesc[0];
}
flush_dcache_range((ulong)&desc_table_p[0],
(ulong)&desc_table_p[CONFIG_TX_DESCR_NUM]);
}
static void npcm750_rx_descs_init(struct npcm750_eth_dev *priv)
{
struct emc_regs *reg = priv->emc_regs_p;
struct npcm750_rxbd *desc_table_p = &priv->rdesc[0];
struct npcm750_rxbd *desc_p;
u8 *rxbuffs = &priv->rxbuffs[0];
u32 idx;
flush_dcache_range((ulong)priv->rxbuffs[0],
(ulong)priv->rxbuffs[CONFIG_RX_DESCR_NUM]);
writel((u32)desc_table_p, &reg->rxdlsa);
priv->curr_rxd = desc_table_p;
for (idx = 0; idx < CONFIG_RX_DESCR_NUM; idx++) {
desc_p = &desc_table_p[idx];
desc_p->sl = RX_OWEN_DMA;
desc_p->buffer = (u32)&rxbuffs[idx * PKTSIZE_ALIGN];
if (idx < (CONFIG_RX_DESCR_NUM - 1))
desc_p->next = (u32)&desc_table_p[idx + 1];
else
desc_p->next = (u32)&priv->rdesc[0];
}
flush_dcache_range((ulong)&desc_table_p[0],
(ulong)&desc_table_p[CONFIG_RX_DESCR_NUM]);
}
static void npcm750_set_fifo_threshold(struct npcm750_eth_dev *priv)
{
struct emc_regs *reg = priv->emc_regs_p;
unsigned int val;
val = RXTHD | TXTHD | BLENGTH;
writel(val, &reg->fftcr);
}
static void npcm750_set_global_maccmd(struct npcm750_eth_dev *priv)
{
struct emc_regs *reg = priv->emc_regs_p;
unsigned int val;
val = readl(&reg->mcmdr);
val |= MCMDR_SPCRC | MCMDR_ENMDC | MCMDR_ACP | MCMDR_NDEF;
writel(val, &reg->mcmdr);
}
static void npcm750_set_cam(struct npcm750_eth_dev *priv,
unsigned int x, unsigned char *pval)
{
struct emc_regs *reg = priv->emc_regs_p;
unsigned int msw, lsw;
msw = (pval[0] << 24) | (pval[1] << 16) | (pval[2] << 8) | pval[3];
lsw = (pval[4] << 24) | (pval[5] << 16);
writel(lsw, &reg->cam0l + x * CAM_ENTRY_SIZE);
writel(msw, &reg->cam0m + x * CAM_ENTRY_SIZE);
writel(readl(&reg->camen) | CAM0EN, &reg->camen);
writel(CAMCMR_ECMP | CAMCMR_ABP | CAMCMR_AUP, &reg->camcmr);
}
static void npcm750_adjust_link(struct emc_regs *reg,
struct phy_device *phydev)
{
u32 val = readl(&reg->mcmdr);
if (!phydev->link) {
printf("%s: No link.\n", phydev->dev->name);
return;
}
if (phydev->speed == 100)
val |= MCMDR_OPMOD;
else
val &= ~MCMDR_OPMOD;
if (phydev->duplex)
val |= MCMDR_FDUP;
else
val &= ~MCMDR_FDUP;
writel(val, &reg->mcmdr);
debug("Speed: %d, %s duplex%s\n", phydev->speed,
(phydev->duplex) ? "full" : "half",
(phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
}
static int npcm750_phy_init(struct npcm750_eth_dev *priv, void *dev)
{
struct phy_device *phydev;
int ret;
u32 address = 0x0;
phydev = phy_connect(priv->bus, address, dev, priv->interface);
if (!phydev)
return -ENODEV;
if (priv->max_speed) {
ret = phy_set_supported(phydev, priv->max_speed);
if (ret)
return ret;
}
phydev->advertising = phydev->supported;
priv->phydev = phydev;
phy_config(phydev);
return 0;
}
static int npcm750_eth_start(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct npcm750_eth_dev *priv = dev_get_priv(dev);
struct emc_regs *reg = priv->emc_regs_p;
u8 *enetaddr = pdata->enetaddr;
int ret;
writel(readl(&reg->mcmdr) & ~MCMDR_TXON & ~MCMDR_RXON, &reg->mcmdr);
writel(readl(&reg->mcmdr) | MCMDR_SWR, &reg->mcmdr);
do {
ret = readl(&reg->mcmdr);
} while (ret & MCMDR_SWR);
npcm750_rx_descs_init(priv);
npcm750_tx_descs_init(priv);
npcm750_set_cam(priv, priv->idx, enetaddr);
npcm750_set_global_maccmd(priv);
npcm750_set_fifo_threshold(priv);
/* Start up the PHY */
ret = phy_startup(priv->phydev);
if (ret) {
printf("Could not initialize PHY\n");
return ret;
}
npcm750_adjust_link(reg, priv->phydev);
writel(readl(&reg->mcmdr) | MCMDR_TXON | MCMDR_RXON, &reg->mcmdr);
return 0;
}
static int npcm750_eth_send(struct udevice *dev, void *packet, int length)
{
struct npcm750_eth_dev *priv = dev_get_priv(dev);
struct emc_regs *reg = priv->emc_regs_p;
struct npcm750_txbd *desc_p;
struct npcm750_txbd *next_desc_p;
desc_p = priv->curr_txd;
invalidate_dcache_range((ulong)desc_p, (ulong)(desc_p + 1));
/* Check if the descriptor is owned by CPU */
if (desc_p->mode & TX_OWEN_DMA) {
next_desc_p = (struct npcm750_txbd *)desc_p->next;
while ((next_desc_p != desc_p) && (next_desc_p->mode & TX_OWEN_DMA))
next_desc_p = (struct npcm750_txbd *)next_desc_p->next;
if (next_desc_p == desc_p) {
struct emc_regs *reg = priv->emc_regs_p;
writel(0, &reg->tsdr);
serial_printf("TX: overflow and exit\n");
return -EPERM;
}
desc_p = next_desc_p;
}
memcpy((void *)desc_p->buffer, packet, length);
flush_dcache_range((ulong)desc_p->buffer,
(ulong)desc_p->buffer + roundup(length, ARCH_DMA_MINALIGN));
desc_p->sl = 0;
desc_p->sl = length & TX_STAT_TBC;
desc_p->mode = TX_OWEN_DMA | PADDINGMODE | CRCMODE;
flush_dcache_range((ulong)desc_p, (ulong)(desc_p + 1));
if (!(readl(&reg->mcmdr) & MCMDR_TXON))
writel(readl(&reg->mcmdr) | MCMDR_TXON, &reg->mcmdr);
priv->curr_txd = (struct npcm750_txbd *)priv->curr_txd->next;
writel(0, &reg->tsdr);
return 0;
}
static int npcm750_eth_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct npcm750_eth_dev *priv = dev_get_priv(dev);
struct npcm750_rxbd *desc_p;
struct npcm750_rxbd *next_desc_p;
int length = -1;
desc_p = priv->curr_rxd;
invalidate_dcache_range((ulong)desc_p, (ulong)(desc_p + 1));
if ((desc_p->sl & RX_STAT_OWNER) == RX_OWEN_DMA) {
next_desc_p = (struct npcm750_rxbd *)desc_p->next;
while ((next_desc_p != desc_p) &&
((next_desc_p->sl & RX_STAT_OWNER) == RX_OWEN_CPU)) {
next_desc_p = (struct npcm750_rxbd *)next_desc_p->next;
}
if (next_desc_p == desc_p) {
struct emc_regs *reg = priv->emc_regs_p;
writel(0, &reg->rsdr);
serial_printf("RX: overflow and exit\n");
return -EPERM;
}
desc_p = next_desc_p;
}
/* Check if the descriptor is owned by CPU */
if ((desc_p->sl & RX_STAT_OWNER) == RX_OWEN_CPU) {
if (desc_p->sl & RX_STAT_RXGD) {
length = desc_p->sl & RX_STAT_RBC;
invalidate_dcache_range((ulong)desc_p->buffer,
(ulong)(desc_p->buffer + roundup(length,
ARCH_DMA_MINALIGN)));
*packetp = (u8 *)(u32)desc_p->buffer;
priv->curr_rxd = desc_p;
}
}
return length;
}
static int npcm750_eth_free_pkt(struct udevice *dev, uchar *packet, int length)
{
struct npcm750_eth_dev *priv = dev_get_priv(dev);
struct emc_regs *reg = priv->emc_regs_p;
struct npcm750_rxbd *desc_p = priv->curr_rxd;
/*
* Make the current descriptor valid again and go to
* the next one
*/
desc_p->sl |= RX_OWEN_DMA;
flush_dcache_range((ulong)desc_p, (ulong)(desc_p + 1));
priv->curr_rxd = (struct npcm750_rxbd *)priv->curr_rxd->next;
writel(0, &reg->rsdr);
return 0;
}
static void npcm750_eth_stop(struct udevice *dev)
{
struct npcm750_eth_dev *priv = dev_get_priv(dev);
struct emc_regs *reg = priv->emc_regs_p;
writel(readl(&reg->mcmdr) & ~MCMDR_TXON, &reg->mcmdr);
writel(readl(&reg->mcmdr) & ~MCMDR_RXON, &reg->mcmdr);
priv->curr_txd = (struct npcm750_txbd *)readl(&reg->txdlsa);
priv->curr_rxd = (struct npcm750_rxbd *)readl(&reg->rxdlsa);
phy_shutdown(priv->phydev);
}
static int npcm750_eth_write_hwaddr(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct npcm750_eth_dev *priv = dev_get_priv(dev);
npcm750_set_cam(priv, CAM0, pdata->enetaddr);
return 0;
}
static int npcm750_eth_bind(struct udevice *dev)
{
return 0;
}
static int npcm750_eth_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct npcm750_eth_dev *priv = dev_get_priv(dev);
u32 iobase = pdata->iobase;
int ret;
memset(priv, 0, sizeof(struct npcm750_eth_dev));
ret = dev_read_u32(dev, "id", &priv->idx);
if (ret) {
printf("failed to get id\n");
return -EINVAL;
}
priv->gcr_regmap = syscon_regmap_lookup_by_phandle(dev, "syscon-gcr");
if (IS_ERR(priv->gcr_regmap))
return -EINVAL;
priv->emc_regs_p = (struct emc_regs *)iobase;
priv->interface = pdata->phy_interface;
priv->max_speed = pdata->max_speed;
if (priv->idx == 0) {
/* Enable RMII for EMC1 module */
regmap_update_bits(priv->gcr_regmap, GCR_INTCR, INTCR_R1EN, INTCR_R1EN);
}
npcm750_mdio_init(dev->name, priv);
priv->bus = miiphy_get_dev_by_name(dev->name);
ret = npcm750_phy_init(priv, dev);
return ret;
}
static int npcm750_eth_remove(struct udevice *dev)
{
struct npcm750_eth_dev *priv = dev_get_priv(dev);
free(priv->phydev);
mdio_unregister(priv->bus);
mdio_free(priv->bus);
return 0;
}
static const struct eth_ops npcm750_eth_ops = {
.start = npcm750_eth_start,
.send = npcm750_eth_send,
.recv = npcm750_eth_recv,
.free_pkt = npcm750_eth_free_pkt,
.stop = npcm750_eth_stop,
.write_hwaddr = npcm750_eth_write_hwaddr,
};
static int npcm750_eth_ofdata_to_platdata(struct udevice *dev)
{
struct npcm750_eth_pdata *npcm750_pdata = dev_get_plat(dev);
struct eth_pdata *pdata = &npcm750_pdata->eth_pdata;
const char *phy_mode;
const fdt32_t *cell;
int ret = 0;
pdata->iobase = (phys_addr_t)dev_read_addr_ptr(dev);
pdata->phy_interface = -1;
phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode", NULL);
if (phy_mode)
pdata->phy_interface = phy_get_interface_by_name(phy_mode);
if (pdata->phy_interface == -1) {
printf("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
return -EINVAL;
}
pdata->max_speed = 0;
cell = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "max-speed", NULL);
if (cell)
pdata->max_speed = fdt32_to_cpu(*cell);
return ret;
}
static const struct udevice_id npcm750_eth_ids[] = {
{ .compatible = "nuvoton,npcm750-emc" },
{ }
};
U_BOOT_DRIVER(eth_npcm750) = {
.name = "eth_npcm750",
.id = UCLASS_ETH,
.of_match = npcm750_eth_ids,
.of_to_plat = npcm750_eth_ofdata_to_platdata,
.bind = npcm750_eth_bind,
.probe = npcm750_eth_probe,
.remove = npcm750_eth_remove,
.ops = &npcm750_eth_ops,
.priv_auto = sizeof(struct npcm750_eth_dev),
.plat_auto = sizeof(struct npcm750_eth_pdata),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};