blob: e09ca3313dd3cbc4627094ff81b9676a78293276 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010
* Vipin Kumar, STMicroelectronics, vipin.kumar@st.com.
*/
/*
* Designware ethernet IP driver for U-Boot
*/
#include <common.h>
#include <clk.h>
#include <cpu_func.h>
#include <dm.h>
#include <errno.h>
#include <log.h>
#include <miiphy.h>
#include <malloc.h>
#include <net.h>
#include <pci.h>
#include <reset.h>
#include <asm/cache.h>
#include <dm/device_compat.h>
#include <dm/device-internal.h>
#include <dm/devres.h>
#include <dm/lists.h>
#include <linux/compiler.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <power/regulator.h>
#include "designware.h"
static int dw_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
{
struct dw_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv);
struct eth_mac_regs *mac_p = priv->mac_regs_p;
ulong start;
u16 miiaddr;
int timeout = CFG_MDIO_TIMEOUT;
miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) |
((reg << MIIREGSHIFT) & MII_REGMSK);
writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
start = get_timer(0);
while (get_timer(start) < timeout) {
if (!(readl(&mac_p->miiaddr) & MII_BUSY))
return readl(&mac_p->miidata);
udelay(10);
};
return -ETIMEDOUT;
}
static int dw_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
u16 val)
{
struct dw_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv);
struct eth_mac_regs *mac_p = priv->mac_regs_p;
ulong start;
u16 miiaddr;
int ret = -ETIMEDOUT, timeout = CFG_MDIO_TIMEOUT;
writel(val, &mac_p->miidata);
miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) |
((reg << MIIREGSHIFT) & MII_REGMSK) | MII_WRITE;
writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
start = get_timer(0);
while (get_timer(start) < timeout) {
if (!(readl(&mac_p->miiaddr) & MII_BUSY)) {
ret = 0;
break;
}
udelay(10);
};
return ret;
}
#if CONFIG_IS_ENABLED(DM_GPIO)
static int __dw_mdio_reset(struct udevice *dev)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
struct dw_eth_pdata *pdata = dev_get_plat(dev);
int ret;
if (!dm_gpio_is_valid(&priv->reset_gpio))
return 0;
/* reset the phy */
ret = dm_gpio_set_value(&priv->reset_gpio, 0);
if (ret)
return ret;
udelay(pdata->reset_delays[0]);
ret = dm_gpio_set_value(&priv->reset_gpio, 1);
if (ret)
return ret;
udelay(pdata->reset_delays[1]);
ret = dm_gpio_set_value(&priv->reset_gpio, 0);
if (ret)
return ret;
udelay(pdata->reset_delays[2]);
return 0;
}
static int dw_mdio_reset(struct mii_dev *bus)
{
struct udevice *dev = bus->priv;
return __dw_mdio_reset(dev);
}
#endif
#if IS_ENABLED(CONFIG_DM_MDIO)
int designware_eth_mdio_read(struct udevice *mdio_dev, int addr, int devad, int reg)
{
struct mdio_perdev_priv *pdata = dev_get_uclass_priv(mdio_dev);
return dw_mdio_read(pdata->mii_bus, addr, devad, reg);
}
int designware_eth_mdio_write(struct udevice *mdio_dev, int addr, int devad, int reg, u16 val)
{
struct mdio_perdev_priv *pdata = dev_get_uclass_priv(mdio_dev);
return dw_mdio_write(pdata->mii_bus, addr, devad, reg, val);
}
#if CONFIG_IS_ENABLED(DM_GPIO)
int designware_eth_mdio_reset(struct udevice *mdio_dev)
{
struct mdio_perdev_priv *mdio_pdata = dev_get_uclass_priv(mdio_dev);
struct udevice *dev = mdio_pdata->mii_bus->priv;
return __dw_mdio_reset(dev->parent);
}
#endif
static const struct mdio_ops designware_eth_mdio_ops = {
.read = designware_eth_mdio_read,
.write = designware_eth_mdio_write,
#if CONFIG_IS_ENABLED(DM_GPIO)
.reset = designware_eth_mdio_reset,
#endif
};
static int designware_eth_mdio_probe(struct udevice *dev)
{
/* Use the priv data of parent */
dev_set_priv(dev, dev_get_priv(dev->parent));
return 0;
}
U_BOOT_DRIVER(designware_eth_mdio) = {
.name = "eth_designware_mdio",
.id = UCLASS_MDIO,
.probe = designware_eth_mdio_probe,
.ops = &designware_eth_mdio_ops,
.plat_auto = sizeof(struct mdio_perdev_priv),
};
#endif
static int dw_mdio_init(const char *name, void *priv)
{
struct mii_dev *bus = mdio_alloc();
if (!bus) {
printf("Failed to allocate MDIO bus\n");
return -ENOMEM;
}
bus->read = dw_mdio_read;
bus->write = dw_mdio_write;
snprintf(bus->name, sizeof(bus->name), "%s", name);
#if CONFIG_IS_ENABLED(DM_GPIO)
bus->reset = dw_mdio_reset;
#endif
bus->priv = priv;
return mdio_register(bus);
}
#if IS_ENABLED(CONFIG_DM_MDIO)
static int dw_dm_mdio_init(const char *name, void *priv)
{
struct udevice *dev = priv;
ofnode node;
int ret;
ofnode_for_each_subnode(node, dev_ofnode(dev)) {
const char *subnode_name = ofnode_get_name(node);
struct udevice *mdiodev;
if (strcmp(subnode_name, "mdio"))
continue;
ret = device_bind_driver_to_node(dev, "eth_designware_mdio",
subnode_name, node, &mdiodev);
if (ret)
debug("%s: not able to bind mdio device node\n", __func__);
return 0;
}
printf("%s: mdio node is missing, registering legacy mdio bus", __func__);
return dw_mdio_init(name, priv);
}
#endif
static void tx_descs_init(struct dw_eth_dev *priv)
{
struct eth_dma_regs *dma_p = priv->dma_regs_p;
struct dmamacdescr *desc_table_p = &priv->tx_mac_descrtable[0];
char *txbuffs = &priv->txbuffs[0];
struct dmamacdescr *desc_p;
u32 idx;
for (idx = 0; idx < CFG_TX_DESCR_NUM; idx++) {
desc_p = &desc_table_p[idx];
desc_p->dmamac_addr = (ulong)&txbuffs[idx * CFG_ETH_BUFSIZE];
desc_p->dmamac_next = (ulong)&desc_table_p[idx + 1];
#if defined(CONFIG_DW_ALTDESCRIPTOR)
desc_p->txrx_status &= ~(DESC_TXSTS_TXINT | DESC_TXSTS_TXLAST |
DESC_TXSTS_TXFIRST | DESC_TXSTS_TXCRCDIS |
DESC_TXSTS_TXCHECKINSCTRL |
DESC_TXSTS_TXRINGEND | DESC_TXSTS_TXPADDIS);
desc_p->txrx_status |= DESC_TXSTS_TXCHAIN;
desc_p->dmamac_cntl = 0;
desc_p->txrx_status &= ~(DESC_TXSTS_MSK | DESC_TXSTS_OWNBYDMA);
#else
desc_p->dmamac_cntl = DESC_TXCTRL_TXCHAIN;
desc_p->txrx_status = 0;
#endif
}
/* Correcting the last pointer of the chain */
desc_p->dmamac_next = (ulong)&desc_table_p[0];
/* Flush all Tx buffer descriptors at once */
flush_dcache_range((ulong)priv->tx_mac_descrtable,
(ulong)priv->tx_mac_descrtable +
sizeof(priv->tx_mac_descrtable));
writel((ulong)&desc_table_p[0], &dma_p->txdesclistaddr);
priv->tx_currdescnum = 0;
}
static void rx_descs_init(struct dw_eth_dev *priv)
{
struct eth_dma_regs *dma_p = priv->dma_regs_p;
struct dmamacdescr *desc_table_p = &priv->rx_mac_descrtable[0];
char *rxbuffs = &priv->rxbuffs[0];
struct dmamacdescr *desc_p;
u32 idx;
/* Before passing buffers to GMAC we need to make sure zeros
* written there right after "priv" structure allocation were
* flushed into RAM.
* Otherwise there's a chance to get some of them flushed in RAM when
* GMAC is already pushing data to RAM via DMA. This way incoming from
* GMAC data will be corrupted. */
flush_dcache_range((ulong)rxbuffs, (ulong)rxbuffs + RX_TOTAL_BUFSIZE);
for (idx = 0; idx < CFG_RX_DESCR_NUM; idx++) {
desc_p = &desc_table_p[idx];
desc_p->dmamac_addr = (ulong)&rxbuffs[idx * CFG_ETH_BUFSIZE];
desc_p->dmamac_next = (ulong)&desc_table_p[idx + 1];
desc_p->dmamac_cntl =
(MAC_MAX_FRAME_SZ & DESC_RXCTRL_SIZE1MASK) |
DESC_RXCTRL_RXCHAIN;
desc_p->txrx_status = DESC_RXSTS_OWNBYDMA;
}
/* Correcting the last pointer of the chain */
desc_p->dmamac_next = (ulong)&desc_table_p[0];
/* Flush all Rx buffer descriptors at once */
flush_dcache_range((ulong)priv->rx_mac_descrtable,
(ulong)priv->rx_mac_descrtable +
sizeof(priv->rx_mac_descrtable));
writel((ulong)&desc_table_p[0], &dma_p->rxdesclistaddr);
priv->rx_currdescnum = 0;
}
static int _dw_write_hwaddr(struct dw_eth_dev *priv, u8 *mac_id)
{
struct eth_mac_regs *mac_p = priv->mac_regs_p;
u32 macid_lo, macid_hi;
macid_lo = mac_id[0] + (mac_id[1] << 8) + (mac_id[2] << 16) +
(mac_id[3] << 24);
macid_hi = mac_id[4] + (mac_id[5] << 8);
writel(macid_hi, &mac_p->macaddr0hi);
writel(macid_lo, &mac_p->macaddr0lo);
return 0;
}
static int dw_adjust_link(struct dw_eth_dev *priv, struct eth_mac_regs *mac_p,
struct phy_device *phydev)
{
u32 conf = readl(&mac_p->conf) | FRAMEBURSTENABLE | DISABLERXOWN;
if (!phydev->link) {
printf("%s: No link.\n", phydev->dev->name);
return 0;
}
if (phydev->speed != 1000)
conf |= MII_PORTSELECT;
else
conf &= ~MII_PORTSELECT;
if (phydev->speed == 100)
conf |= FES_100;
if (phydev->duplex)
conf |= FULLDPLXMODE;
writel(conf, &mac_p->conf);
printf("Speed: %d, %s duplex%s\n", phydev->speed,
(phydev->duplex) ? "full" : "half",
(phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
return 0;
}
static void _dw_eth_halt(struct dw_eth_dev *priv)
{
struct eth_mac_regs *mac_p = priv->mac_regs_p;
struct eth_dma_regs *dma_p = priv->dma_regs_p;
writel(readl(&mac_p->conf) & ~(RXENABLE | TXENABLE), &mac_p->conf);
writel(readl(&dma_p->opmode) & ~(RXSTART | TXSTART), &dma_p->opmode);
phy_shutdown(priv->phydev);
}
int designware_eth_init(struct dw_eth_dev *priv, u8 *enetaddr)
{
struct eth_mac_regs *mac_p = priv->mac_regs_p;
struct eth_dma_regs *dma_p = priv->dma_regs_p;
unsigned int start;
int ret;
writel(readl(&dma_p->busmode) | DMAMAC_SRST, &dma_p->busmode);
/*
* When a MII PHY is used, we must set the PS bit for the DMA
* reset to succeed.
*/
if (priv->phydev->interface == PHY_INTERFACE_MODE_MII)
writel(readl(&mac_p->conf) | MII_PORTSELECT, &mac_p->conf);
else
writel(readl(&mac_p->conf) & ~MII_PORTSELECT, &mac_p->conf);
start = get_timer(0);
while (readl(&dma_p->busmode) & DMAMAC_SRST) {
if (get_timer(start) >= CFG_MACRESET_TIMEOUT) {
printf("DMA reset timeout\n");
return -ETIMEDOUT;
}
mdelay(100);
};
/*
* Soft reset above clears HW address registers.
* So we have to set it here once again.
*/
_dw_write_hwaddr(priv, enetaddr);
rx_descs_init(priv);
tx_descs_init(priv);
writel(FIXEDBURST | PRIORXTX_41 | DMA_PBL, &dma_p->busmode);
#ifndef CONFIG_DW_MAC_FORCE_THRESHOLD_MODE
writel(readl(&dma_p->opmode) | FLUSHTXFIFO | STOREFORWARD,
&dma_p->opmode);
#else
writel(readl(&dma_p->opmode) | FLUSHTXFIFO,
&dma_p->opmode);
#endif
writel(readl(&dma_p->opmode) | RXSTART | TXSTART, &dma_p->opmode);
#ifdef CONFIG_DW_AXI_BURST_LEN
writel((CONFIG_DW_AXI_BURST_LEN & 0x1FF >> 1), &dma_p->axibus);
#endif
/* Start up the PHY */
ret = phy_startup(priv->phydev);
if (ret) {
printf("Could not initialize PHY %s\n",
priv->phydev->dev->name);
return ret;
}
ret = dw_adjust_link(priv, mac_p, priv->phydev);
if (ret)
return ret;
return 0;
}
int designware_eth_enable(struct dw_eth_dev *priv)
{
struct eth_mac_regs *mac_p = priv->mac_regs_p;
if (!priv->phydev->link)
return -EIO;
writel(readl(&mac_p->conf) | RXENABLE | TXENABLE, &mac_p->conf);
return 0;
}
#define ETH_ZLEN 60
static int _dw_eth_send(struct dw_eth_dev *priv, void *packet, int length)
{
struct eth_dma_regs *dma_p = priv->dma_regs_p;
u32 desc_num = priv->tx_currdescnum;
struct dmamacdescr *desc_p = &priv->tx_mac_descrtable[desc_num];
ulong desc_start = (ulong)desc_p;
ulong desc_end = desc_start +
roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN);
ulong data_start = desc_p->dmamac_addr;
ulong data_end = data_start + roundup(length, ARCH_DMA_MINALIGN);
/*
* Strictly we only need to invalidate the "txrx_status" field
* for the following check, but on some platforms we cannot
* invalidate only 4 bytes, so we flush the entire descriptor,
* which is 16 bytes in total. This is safe because the
* individual descriptors in the array are each aligned to
* ARCH_DMA_MINALIGN and padded appropriately.
*/
invalidate_dcache_range(desc_start, desc_end);
/* Check if the descriptor is owned by CPU */
if (desc_p->txrx_status & DESC_TXSTS_OWNBYDMA) {
printf("CPU not owner of tx frame\n");
return -EPERM;
}
memcpy((void *)data_start, packet, length);
if (length < ETH_ZLEN) {
memset(&((char *)data_start)[length], 0, ETH_ZLEN - length);
length = ETH_ZLEN;
}
/* Flush data to be sent */
flush_dcache_range(data_start, data_end);
#if defined(CONFIG_DW_ALTDESCRIPTOR)
desc_p->txrx_status |= DESC_TXSTS_TXFIRST | DESC_TXSTS_TXLAST;
desc_p->dmamac_cntl = (desc_p->dmamac_cntl & ~DESC_TXCTRL_SIZE1MASK) |
((length << DESC_TXCTRL_SIZE1SHFT) &
DESC_TXCTRL_SIZE1MASK);
desc_p->txrx_status &= ~(DESC_TXSTS_MSK);
desc_p->txrx_status |= DESC_TXSTS_OWNBYDMA;
#else
desc_p->dmamac_cntl = (desc_p->dmamac_cntl & ~DESC_TXCTRL_SIZE1MASK) |
((length << DESC_TXCTRL_SIZE1SHFT) &
DESC_TXCTRL_SIZE1MASK) | DESC_TXCTRL_TXLAST |
DESC_TXCTRL_TXFIRST;
desc_p->txrx_status = DESC_TXSTS_OWNBYDMA;
#endif
/* Flush modified buffer descriptor */
flush_dcache_range(desc_start, desc_end);
/* Test the wrap-around condition. */
if (++desc_num >= CFG_TX_DESCR_NUM)
desc_num = 0;
priv->tx_currdescnum = desc_num;
/* Start the transmission */
writel(POLL_DATA, &dma_p->txpolldemand);
return 0;
}
static int _dw_eth_recv(struct dw_eth_dev *priv, uchar **packetp)
{
u32 status, desc_num = priv->rx_currdescnum;
struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num];
int length = -EAGAIN;
ulong desc_start = (ulong)desc_p;
ulong desc_end = desc_start +
roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN);
ulong data_start = desc_p->dmamac_addr;
ulong data_end;
/* Invalidate entire buffer descriptor */
invalidate_dcache_range(desc_start, desc_end);
status = desc_p->txrx_status;
/* Check if the owner is the CPU */
if (!(status & DESC_RXSTS_OWNBYDMA)) {
length = (status & DESC_RXSTS_FRMLENMSK) >>
DESC_RXSTS_FRMLENSHFT;
/* Invalidate received data */
data_end = data_start + roundup(length, ARCH_DMA_MINALIGN);
invalidate_dcache_range(data_start, data_end);
*packetp = (uchar *)(ulong)desc_p->dmamac_addr;
}
return length;
}
static int _dw_free_pkt(struct dw_eth_dev *priv)
{
u32 desc_num = priv->rx_currdescnum;
struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num];
ulong desc_start = (ulong)desc_p;
ulong desc_end = desc_start +
roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN);
/*
* Make the current descriptor valid again and go to
* the next one
*/
desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA;
/* Flush only status field - others weren't changed */
flush_dcache_range(desc_start, desc_end);
/* Test the wrap-around condition. */
if (++desc_num >= CFG_RX_DESCR_NUM)
desc_num = 0;
priv->rx_currdescnum = desc_num;
return 0;
}
static int dw_phy_init(struct dw_eth_dev *priv, void *dev)
{
struct phy_device *phydev;
int ret;
#if IS_ENABLED(CONFIG_DM_MDIO)
phydev = dm_eth_phy_connect(dev);
if (!phydev)
return -ENODEV;
#else
int phy_addr = -1;
#ifdef CONFIG_PHY_ADDR
phy_addr = CONFIG_PHY_ADDR;
#endif
phydev = phy_connect(priv->bus, phy_addr, dev, priv->interface);
if (!phydev)
return -ENODEV;
#endif
phydev->supported &= PHY_GBIT_FEATURES;
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 designware_eth_start(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct dw_eth_dev *priv = dev_get_priv(dev);
int ret;
ret = designware_eth_init(priv, pdata->enetaddr);
if (ret)
return ret;
ret = designware_eth_enable(priv);
if (ret)
return ret;
return 0;
}
int designware_eth_send(struct udevice *dev, void *packet, int length)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_eth_send(priv, packet, length);
}
int designware_eth_recv(struct udevice *dev, int flags, uchar **packetp)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_eth_recv(priv, packetp);
}
int designware_eth_free_pkt(struct udevice *dev, uchar *packet, int length)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_free_pkt(priv);
}
void designware_eth_stop(struct udevice *dev)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_eth_halt(priv);
}
int designware_eth_write_hwaddr(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct dw_eth_dev *priv = dev_get_priv(dev);
return _dw_write_hwaddr(priv, pdata->enetaddr);
}
static int designware_eth_bind(struct udevice *dev)
{
if (IS_ENABLED(CONFIG_PCI)) {
static int num_cards;
char name[20];
/* Create a unique device name for PCI type devices */
if (device_is_on_pci_bus(dev)) {
sprintf(name, "eth_designware#%u", num_cards++);
device_set_name(dev, name);
}
}
return 0;
}
int designware_eth_probe(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_plat(dev);
struct dw_eth_dev *priv = dev_get_priv(dev);
u32 iobase = pdata->iobase;
ulong ioaddr;
int ret, err;
struct reset_ctl_bulk reset_bulk;
#ifdef CONFIG_CLK
int i, clock_nb;
priv->clock_count = 0;
clock_nb = dev_count_phandle_with_args(dev, "clocks", "#clock-cells",
0);
if (clock_nb > 0) {
priv->clocks = devm_kcalloc(dev, clock_nb, sizeof(struct clk),
GFP_KERNEL);
if (!priv->clocks)
return -ENOMEM;
for (i = 0; i < clock_nb; i++) {
err = clk_get_by_index(dev, i, &priv->clocks[i]);
if (err < 0)
break;
err = clk_enable(&priv->clocks[i]);
if (err && err != -ENOSYS && err != -ENOTSUPP) {
pr_err("failed to enable clock %d\n", i);
clk_free(&priv->clocks[i]);
goto clk_err;
}
priv->clock_count++;
}
} else if (clock_nb != -ENOENT) {
pr_err("failed to get clock phandle(%d)\n", clock_nb);
return clock_nb;
}
#endif
#if defined(CONFIG_DM_REGULATOR)
struct udevice *phy_supply;
ret = device_get_supply_regulator(dev, "phy-supply",
&phy_supply);
if (ret) {
debug("%s: No phy supply\n", dev->name);
} else {
ret = regulator_set_enable(phy_supply, true);
if (ret) {
puts("Error enabling phy supply\n");
return ret;
}
}
#endif
ret = reset_get_bulk(dev, &reset_bulk);
if (ret)
dev_warn(dev, "Can't get reset: %d\n", ret);
else
reset_deassert_bulk(&reset_bulk);
/*
* If we are on PCI bus, either directly attached to a PCI root port,
* or via a PCI bridge, fill in plat before we probe the hardware.
*/
if (IS_ENABLED(CONFIG_PCI) && device_is_on_pci_bus(dev)) {
dm_pci_read_config32(dev, PCI_BASE_ADDRESS_0, &iobase);
iobase &= PCI_BASE_ADDRESS_MEM_MASK;
iobase = dm_pci_mem_to_phys(dev, iobase);
pdata->iobase = iobase;
pdata->phy_interface = PHY_INTERFACE_MODE_RMII;
}
debug("%s, iobase=%x, priv=%p\n", __func__, iobase, priv);
ioaddr = iobase;
priv->mac_regs_p = (struct eth_mac_regs *)ioaddr;
priv->dma_regs_p = (struct eth_dma_regs *)(ioaddr + DW_DMA_BASE_OFFSET);
priv->interface = pdata->phy_interface;
priv->max_speed = pdata->max_speed;
#if IS_ENABLED(CONFIG_DM_MDIO)
ret = dw_dm_mdio_init(dev->name, dev);
#else
ret = dw_mdio_init(dev->name, dev);
#endif
if (ret) {
err = ret;
goto mdio_err;
}
priv->bus = miiphy_get_dev_by_name(dev->name);
ret = dw_phy_init(priv, dev);
debug("%s, ret=%d\n", __func__, ret);
if (!ret)
return 0;
/* continue here for cleanup if no PHY found */
err = ret;
mdio_unregister(priv->bus);
mdio_free(priv->bus);
mdio_err:
#ifdef CONFIG_CLK
clk_err:
ret = clk_release_all(priv->clocks, priv->clock_count);
if (ret)
pr_err("failed to disable all clocks\n");
#endif
return err;
}
static int designware_eth_remove(struct udevice *dev)
{
struct dw_eth_dev *priv = dev_get_priv(dev);
free(priv->phydev);
mdio_unregister(priv->bus);
mdio_free(priv->bus);
#ifdef CONFIG_CLK
return clk_release_all(priv->clocks, priv->clock_count);
#else
return 0;
#endif
}
const struct eth_ops designware_eth_ops = {
.start = designware_eth_start,
.send = designware_eth_send,
.recv = designware_eth_recv,
.free_pkt = designware_eth_free_pkt,
.stop = designware_eth_stop,
.write_hwaddr = designware_eth_write_hwaddr,
};
int designware_eth_of_to_plat(struct udevice *dev)
{
struct dw_eth_pdata *dw_pdata = dev_get_plat(dev);
#if CONFIG_IS_ENABLED(DM_GPIO)
struct dw_eth_dev *priv = dev_get_priv(dev);
#endif
struct eth_pdata *pdata = &dw_pdata->eth_pdata;
#if CONFIG_IS_ENABLED(DM_GPIO)
int reset_flags = GPIOD_IS_OUT;
#endif
int ret = 0;
pdata->iobase = dev_read_addr(dev);
pdata->phy_interface = dev_read_phy_mode(dev);
if (pdata->phy_interface == PHY_INTERFACE_MODE_NA)
return -EINVAL;
pdata->max_speed = dev_read_u32_default(dev, "max-speed", 0);
#if CONFIG_IS_ENABLED(DM_GPIO)
if (dev_read_bool(dev, "snps,reset-active-low"))
reset_flags |= GPIOD_ACTIVE_LOW;
ret = gpio_request_by_name(dev, "snps,reset-gpio", 0,
&priv->reset_gpio, reset_flags);
if (ret == 0) {
ret = dev_read_u32_array(dev, "snps,reset-delays-us",
dw_pdata->reset_delays, 3);
} else if (ret == -ENOENT) {
ret = 0;
}
#endif
return ret;
}
static const struct udevice_id designware_eth_ids[] = {
{ .compatible = "allwinner,sun7i-a20-gmac" },
{ .compatible = "amlogic,meson6-dwmac" },
{ .compatible = "st,stm32-dwmac" },
{ .compatible = "snps,arc-dwmac-3.70a" },
{ }
};
U_BOOT_DRIVER(eth_designware) = {
.name = "eth_designware",
.id = UCLASS_ETH,
.of_match = designware_eth_ids,
.of_to_plat = designware_eth_of_to_plat,
.bind = designware_eth_bind,
.probe = designware_eth_probe,
.remove = designware_eth_remove,
.ops = &designware_eth_ops,
.priv_auto = sizeof(struct dw_eth_dev),
.plat_auto = sizeof(struct dw_eth_pdata),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
static struct pci_device_id supported[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_QRK_EMAC) },
{ }
};
U_BOOT_PCI_DEVICE(eth_designware, supported);