1 files changed, 982 insertions, 0 deletions

diff --git a/roms/u-boot/drivers/net/designware.c b/roms/u-boot/drivers/net/designware.c
new file mode 100644
index 000000000..5d92257e7
--- /dev/null
+++ b/roms/u-boot/drivers/net/designware.c
@@ -0,0 +1,982 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2010
+ * Vipin Kumar, ST Micoelectronics, 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)
+{
+#ifdef CONFIG_DM_ETH
+	struct dw_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv);
+	struct eth_mac_regs *mac_p = priv->mac_regs_p;
+#else
+	struct eth_mac_regs *mac_p = bus->priv;
+#endif
+	ulong start;
+	u16 miiaddr;
+	int timeout = CONFIG_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)
+{
+#ifdef CONFIG_DM_ETH
+	struct dw_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv);
+	struct eth_mac_regs *mac_p = priv->mac_regs_p;
+#else
+	struct eth_mac_regs *mac_p = bus->priv;
+#endif
+	ulong start;
+	u16 miiaddr;
+	int ret = -ETIMEDOUT, timeout = CONFIG_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 defined(CONFIG_DM_ETH) && 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 defined(CONFIG_DM_ETH) && 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 < CONFIG_TX_DESCR_NUM; idx++) {
+		desc_p = &desc_table_p[idx];
+		desc_p->dmamac_addr = (ulong)&txbuffs[idx * CONFIG_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 < CONFIG_RX_DESCR_NUM; idx++) {
+		desc_p = &desc_table_p[idx];
+		desc_p->dmamac_addr = (ulong)&rxbuffs[idx * CONFIG_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) >= CONFIG_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 >= CONFIG_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 >= CONFIG_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) && IS_ENABLED(CONFIG_DM_ETH)
+	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;
+}
+
+#ifndef CONFIG_DM_ETH
+static int dw_eth_init(struct eth_device *dev, struct bd_info *bis)
+{
+	int ret;
+
+	ret = designware_eth_init(dev->priv, dev->enetaddr);
+	if (!ret)
+		ret = designware_eth_enable(dev->priv);
+
+	return ret;
+}
+
+static int dw_eth_send(struct eth_device *dev, void *packet, int length)
+{
+	return _dw_eth_send(dev->priv, packet, length);
+}
+
+static int dw_eth_recv(struct eth_device *dev)
+{
+	uchar *packet;
+	int length;
+
+	length = _dw_eth_recv(dev->priv, &packet);
+	if (length == -EAGAIN)
+		return 0;
+	net_process_received_packet(packet, length);
+
+	_dw_free_pkt(dev->priv);
+
+	return 0;
+}
+
+static void dw_eth_halt(struct eth_device *dev)
+{
+	return _dw_eth_halt(dev->priv);
+}
+
+static int dw_write_hwaddr(struct eth_device *dev)
+{
+	return _dw_write_hwaddr(dev->priv, dev->enetaddr);
+}
+
+int designware_initialize(ulong base_addr, u32 interface)
+{
+	struct eth_device *dev;
+	struct dw_eth_dev *priv;
+
+	dev = (struct eth_device *) malloc(sizeof(struct eth_device));
+	if (!dev)
+		return -ENOMEM;
+
+	/*
+	 * Since the priv structure contains the descriptors which need a strict
+	 * buswidth alignment, memalign is used to allocate memory
+	 */
+	priv = (struct dw_eth_dev *) memalign(ARCH_DMA_MINALIGN,
+					      sizeof(struct dw_eth_dev));
+	if (!priv) {
+		free(dev);
+		return -ENOMEM;
+	}
+
+	if ((phys_addr_t)priv + sizeof(*priv) > (1ULL << 32)) {
+		printf("designware: buffers are outside DMA memory\n");
+		return -EINVAL;
+	}
+
+	memset(dev, 0, sizeof(struct eth_device));
+	memset(priv, 0, sizeof(struct dw_eth_dev));
+
+	sprintf(dev->name, "dwmac.%lx", base_addr);
+	dev->iobase = (int)base_addr;
+	dev->priv = priv;
+
+	priv->dev = dev;
+	priv->mac_regs_p = (struct eth_mac_regs *)base_addr;
+	priv->dma_regs_p = (struct eth_dma_regs *)(base_addr +
+			DW_DMA_BASE_OFFSET);
+
+	dev->init = dw_eth_init;
+	dev->send = dw_eth_send;
+	dev->recv = dw_eth_recv;
+	dev->halt = dw_eth_halt;
+	dev->write_hwaddr = dw_write_hwaddr;
+
+	eth_register(dev);
+
+	priv->interface = interface;
+
+	dw_mdio_init(dev->name, priv->mac_regs_p);
+	priv->bus = miiphy_get_dev_by_name(dev->name);
+
+	return dw_phy_init(priv, dev);
+}
+#endif
+
+#ifdef CONFIG_DM_ETH
+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)
+{
+#ifdef CONFIG_DM_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);
+	}
+#endif
+
+	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);
+
+#ifdef CONFIG_DM_PCI
+	/*
+	 * 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 (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;
+	}
+#endif
+
+	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;
+	const char *phy_mode;
+#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 = -1;
+	phy_mode = dev_read_string(dev, "phy-mode");
+	if (phy_mode)
+		pdata->phy_interface = phy_get_interface_by_name(phy_mode);
+	if (pdata->phy_interface == -1) {
+		debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
+		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);
+#endif