mirror of
https://github.com/AsahiLinux/u-boot
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eae488b779
Replace reference to the correct name STMicroelectronics Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
974 lines
24 KiB
C
974 lines
24 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2010
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* Vipin Kumar, STMicroelectronics, vipin.kumar@st.com.
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*/
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/*
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* Designware ethernet IP driver for U-Boot
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*/
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#include <common.h>
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#include <clk.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <errno.h>
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#include <log.h>
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#include <miiphy.h>
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#include <malloc.h>
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#include <net.h>
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#include <pci.h>
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#include <reset.h>
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#include <asm/cache.h>
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#include <dm/device_compat.h>
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#include <dm/device-internal.h>
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#include <dm/devres.h>
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#include <dm/lists.h>
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#include <linux/compiler.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/kernel.h>
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#include <asm/io.h>
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#include <power/regulator.h>
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#include "designware.h"
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static int dw_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
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{
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#ifdef CONFIG_DM_ETH
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struct dw_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv);
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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#else
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struct eth_mac_regs *mac_p = bus->priv;
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#endif
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ulong start;
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u16 miiaddr;
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int timeout = CONFIG_MDIO_TIMEOUT;
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miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) |
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((reg << MIIREGSHIFT) & MII_REGMSK);
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writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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if (!(readl(&mac_p->miiaddr) & MII_BUSY))
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return readl(&mac_p->miidata);
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udelay(10);
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};
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return -ETIMEDOUT;
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}
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static int dw_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
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u16 val)
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{
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#ifdef CONFIG_DM_ETH
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struct dw_eth_dev *priv = dev_get_priv((struct udevice *)bus->priv);
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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#else
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struct eth_mac_regs *mac_p = bus->priv;
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#endif
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ulong start;
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u16 miiaddr;
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int ret = -ETIMEDOUT, timeout = CONFIG_MDIO_TIMEOUT;
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writel(val, &mac_p->miidata);
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miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) |
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((reg << MIIREGSHIFT) & MII_REGMSK) | MII_WRITE;
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writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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if (!(readl(&mac_p->miiaddr) & MII_BUSY)) {
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ret = 0;
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break;
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}
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udelay(10);
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};
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return ret;
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}
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#if defined(CONFIG_DM_ETH) && CONFIG_IS_ENABLED(DM_GPIO)
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static int __dw_mdio_reset(struct udevice *dev)
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{
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struct dw_eth_dev *priv = dev_get_priv(dev);
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struct dw_eth_pdata *pdata = dev_get_plat(dev);
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int ret;
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if (!dm_gpio_is_valid(&priv->reset_gpio))
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return 0;
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/* reset the phy */
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ret = dm_gpio_set_value(&priv->reset_gpio, 0);
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if (ret)
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return ret;
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udelay(pdata->reset_delays[0]);
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ret = dm_gpio_set_value(&priv->reset_gpio, 1);
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if (ret)
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return ret;
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udelay(pdata->reset_delays[1]);
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ret = dm_gpio_set_value(&priv->reset_gpio, 0);
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if (ret)
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return ret;
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udelay(pdata->reset_delays[2]);
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return 0;
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}
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static int dw_mdio_reset(struct mii_dev *bus)
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{
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struct udevice *dev = bus->priv;
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return __dw_mdio_reset(dev);
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}
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#endif
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#if IS_ENABLED(CONFIG_DM_MDIO)
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int designware_eth_mdio_read(struct udevice *mdio_dev, int addr, int devad, int reg)
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{
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struct mdio_perdev_priv *pdata = dev_get_uclass_priv(mdio_dev);
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return dw_mdio_read(pdata->mii_bus, addr, devad, reg);
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}
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int designware_eth_mdio_write(struct udevice *mdio_dev, int addr, int devad, int reg, u16 val)
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{
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struct mdio_perdev_priv *pdata = dev_get_uclass_priv(mdio_dev);
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return dw_mdio_write(pdata->mii_bus, addr, devad, reg, val);
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}
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#if CONFIG_IS_ENABLED(DM_GPIO)
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int designware_eth_mdio_reset(struct udevice *mdio_dev)
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{
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struct mdio_perdev_priv *mdio_pdata = dev_get_uclass_priv(mdio_dev);
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struct udevice *dev = mdio_pdata->mii_bus->priv;
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return __dw_mdio_reset(dev->parent);
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}
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#endif
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static const struct mdio_ops designware_eth_mdio_ops = {
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.read = designware_eth_mdio_read,
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.write = designware_eth_mdio_write,
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#if CONFIG_IS_ENABLED(DM_GPIO)
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.reset = designware_eth_mdio_reset,
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#endif
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};
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static int designware_eth_mdio_probe(struct udevice *dev)
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{
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/* Use the priv data of parent */
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dev_set_priv(dev, dev_get_priv(dev->parent));
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return 0;
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}
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U_BOOT_DRIVER(designware_eth_mdio) = {
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.name = "eth_designware_mdio",
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.id = UCLASS_MDIO,
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.probe = designware_eth_mdio_probe,
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.ops = &designware_eth_mdio_ops,
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.plat_auto = sizeof(struct mdio_perdev_priv),
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};
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#endif
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static int dw_mdio_init(const char *name, void *priv)
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{
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struct mii_dev *bus = mdio_alloc();
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if (!bus) {
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printf("Failed to allocate MDIO bus\n");
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return -ENOMEM;
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}
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bus->read = dw_mdio_read;
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bus->write = dw_mdio_write;
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snprintf(bus->name, sizeof(bus->name), "%s", name);
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#if defined(CONFIG_DM_ETH) && CONFIG_IS_ENABLED(DM_GPIO)
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bus->reset = dw_mdio_reset;
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#endif
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bus->priv = priv;
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return mdio_register(bus);
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}
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#if IS_ENABLED(CONFIG_DM_MDIO)
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static int dw_dm_mdio_init(const char *name, void *priv)
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{
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struct udevice *dev = priv;
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ofnode node;
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int ret;
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ofnode_for_each_subnode(node, dev_ofnode(dev)) {
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const char *subnode_name = ofnode_get_name(node);
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struct udevice *mdiodev;
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if (strcmp(subnode_name, "mdio"))
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continue;
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ret = device_bind_driver_to_node(dev, "eth_designware_mdio",
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subnode_name, node, &mdiodev);
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if (ret)
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debug("%s: not able to bind mdio device node\n", __func__);
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return 0;
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}
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printf("%s: mdio node is missing, registering legacy mdio bus", __func__);
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return dw_mdio_init(name, priv);
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}
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#endif
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static void tx_descs_init(struct dw_eth_dev *priv)
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{
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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struct dmamacdescr *desc_table_p = &priv->tx_mac_descrtable[0];
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char *txbuffs = &priv->txbuffs[0];
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struct dmamacdescr *desc_p;
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u32 idx;
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for (idx = 0; idx < CONFIG_TX_DESCR_NUM; idx++) {
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desc_p = &desc_table_p[idx];
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desc_p->dmamac_addr = (ulong)&txbuffs[idx * CONFIG_ETH_BUFSIZE];
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desc_p->dmamac_next = (ulong)&desc_table_p[idx + 1];
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#if defined(CONFIG_DW_ALTDESCRIPTOR)
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desc_p->txrx_status &= ~(DESC_TXSTS_TXINT | DESC_TXSTS_TXLAST |
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DESC_TXSTS_TXFIRST | DESC_TXSTS_TXCRCDIS |
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DESC_TXSTS_TXCHECKINSCTRL |
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DESC_TXSTS_TXRINGEND | DESC_TXSTS_TXPADDIS);
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desc_p->txrx_status |= DESC_TXSTS_TXCHAIN;
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desc_p->dmamac_cntl = 0;
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desc_p->txrx_status &= ~(DESC_TXSTS_MSK | DESC_TXSTS_OWNBYDMA);
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#else
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desc_p->dmamac_cntl = DESC_TXCTRL_TXCHAIN;
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desc_p->txrx_status = 0;
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#endif
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}
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/* Correcting the last pointer of the chain */
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desc_p->dmamac_next = (ulong)&desc_table_p[0];
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/* Flush all Tx buffer descriptors at once */
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flush_dcache_range((ulong)priv->tx_mac_descrtable,
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(ulong)priv->tx_mac_descrtable +
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sizeof(priv->tx_mac_descrtable));
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writel((ulong)&desc_table_p[0], &dma_p->txdesclistaddr);
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priv->tx_currdescnum = 0;
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}
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static void rx_descs_init(struct dw_eth_dev *priv)
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{
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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struct dmamacdescr *desc_table_p = &priv->rx_mac_descrtable[0];
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char *rxbuffs = &priv->rxbuffs[0];
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struct dmamacdescr *desc_p;
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u32 idx;
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/* Before passing buffers to GMAC we need to make sure zeros
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* written there right after "priv" structure allocation were
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* flushed into RAM.
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* Otherwise there's a chance to get some of them flushed in RAM when
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* GMAC is already pushing data to RAM via DMA. This way incoming from
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* GMAC data will be corrupted. */
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flush_dcache_range((ulong)rxbuffs, (ulong)rxbuffs + RX_TOTAL_BUFSIZE);
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for (idx = 0; idx < CONFIG_RX_DESCR_NUM; idx++) {
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desc_p = &desc_table_p[idx];
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desc_p->dmamac_addr = (ulong)&rxbuffs[idx * CONFIG_ETH_BUFSIZE];
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desc_p->dmamac_next = (ulong)&desc_table_p[idx + 1];
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desc_p->dmamac_cntl =
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(MAC_MAX_FRAME_SZ & DESC_RXCTRL_SIZE1MASK) |
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DESC_RXCTRL_RXCHAIN;
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desc_p->txrx_status = DESC_RXSTS_OWNBYDMA;
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}
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/* Correcting the last pointer of the chain */
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desc_p->dmamac_next = (ulong)&desc_table_p[0];
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/* Flush all Rx buffer descriptors at once */
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flush_dcache_range((ulong)priv->rx_mac_descrtable,
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(ulong)priv->rx_mac_descrtable +
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sizeof(priv->rx_mac_descrtable));
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writel((ulong)&desc_table_p[0], &dma_p->rxdesclistaddr);
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priv->rx_currdescnum = 0;
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}
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static int _dw_write_hwaddr(struct dw_eth_dev *priv, u8 *mac_id)
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{
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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u32 macid_lo, macid_hi;
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macid_lo = mac_id[0] + (mac_id[1] << 8) + (mac_id[2] << 16) +
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(mac_id[3] << 24);
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macid_hi = mac_id[4] + (mac_id[5] << 8);
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writel(macid_hi, &mac_p->macaddr0hi);
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writel(macid_lo, &mac_p->macaddr0lo);
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return 0;
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}
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static int dw_adjust_link(struct dw_eth_dev *priv, struct eth_mac_regs *mac_p,
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struct phy_device *phydev)
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{
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u32 conf = readl(&mac_p->conf) | FRAMEBURSTENABLE | DISABLERXOWN;
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if (!phydev->link) {
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printf("%s: No link.\n", phydev->dev->name);
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return 0;
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}
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if (phydev->speed != 1000)
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conf |= MII_PORTSELECT;
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else
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conf &= ~MII_PORTSELECT;
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if (phydev->speed == 100)
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conf |= FES_100;
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if (phydev->duplex)
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conf |= FULLDPLXMODE;
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writel(conf, &mac_p->conf);
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printf("Speed: %d, %s duplex%s\n", phydev->speed,
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(phydev->duplex) ? "full" : "half",
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(phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
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return 0;
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}
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static void _dw_eth_halt(struct dw_eth_dev *priv)
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{
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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writel(readl(&mac_p->conf) & ~(RXENABLE | TXENABLE), &mac_p->conf);
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writel(readl(&dma_p->opmode) & ~(RXSTART | TXSTART), &dma_p->opmode);
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phy_shutdown(priv->phydev);
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}
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int designware_eth_init(struct dw_eth_dev *priv, u8 *enetaddr)
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{
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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unsigned int start;
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int ret;
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writel(readl(&dma_p->busmode) | DMAMAC_SRST, &dma_p->busmode);
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/*
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* When a MII PHY is used, we must set the PS bit for the DMA
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* reset to succeed.
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*/
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if (priv->phydev->interface == PHY_INTERFACE_MODE_MII)
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writel(readl(&mac_p->conf) | MII_PORTSELECT, &mac_p->conf);
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else
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writel(readl(&mac_p->conf) & ~MII_PORTSELECT, &mac_p->conf);
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start = get_timer(0);
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while (readl(&dma_p->busmode) & DMAMAC_SRST) {
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if (get_timer(start) >= CONFIG_MACRESET_TIMEOUT) {
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printf("DMA reset timeout\n");
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return -ETIMEDOUT;
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}
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mdelay(100);
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};
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/*
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* Soft reset above clears HW address registers.
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* So we have to set it here once again.
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*/
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_dw_write_hwaddr(priv, enetaddr);
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rx_descs_init(priv);
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tx_descs_init(priv);
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writel(FIXEDBURST | PRIORXTX_41 | DMA_PBL, &dma_p->busmode);
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#ifndef CONFIG_DW_MAC_FORCE_THRESHOLD_MODE
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writel(readl(&dma_p->opmode) | FLUSHTXFIFO | STOREFORWARD,
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&dma_p->opmode);
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#else
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writel(readl(&dma_p->opmode) | FLUSHTXFIFO,
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&dma_p->opmode);
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#endif
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writel(readl(&dma_p->opmode) | RXSTART | TXSTART, &dma_p->opmode);
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#ifdef CONFIG_DW_AXI_BURST_LEN
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writel((CONFIG_DW_AXI_BURST_LEN & 0x1FF >> 1), &dma_p->axibus);
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#endif
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/* Start up the PHY */
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ret = phy_startup(priv->phydev);
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if (ret) {
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printf("Could not initialize PHY %s\n",
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priv->phydev->dev->name);
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return ret;
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}
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ret = dw_adjust_link(priv, mac_p, priv->phydev);
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if (ret)
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return ret;
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return 0;
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}
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int designware_eth_enable(struct dw_eth_dev *priv)
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{
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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if (!priv->phydev->link)
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return -EIO;
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writel(readl(&mac_p->conf) | RXENABLE | TXENABLE, &mac_p->conf);
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return 0;
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}
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#define ETH_ZLEN 60
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static int _dw_eth_send(struct dw_eth_dev *priv, void *packet, int length)
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{
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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u32 desc_num = priv->tx_currdescnum;
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struct dmamacdescr *desc_p = &priv->tx_mac_descrtable[desc_num];
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ulong desc_start = (ulong)desc_p;
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ulong desc_end = desc_start +
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roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN);
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ulong data_start = desc_p->dmamac_addr;
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ulong data_end = data_start + roundup(length, ARCH_DMA_MINALIGN);
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/*
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* Strictly we only need to invalidate the "txrx_status" field
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* for the following check, but on some platforms we cannot
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* invalidate only 4 bytes, so we flush the entire descriptor,
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* which is 16 bytes in total. This is safe because the
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* individual descriptors in the array are each aligned to
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* ARCH_DMA_MINALIGN and padded appropriately.
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*/
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invalidate_dcache_range(desc_start, desc_end);
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/* Check if the descriptor is owned by CPU */
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if (desc_p->txrx_status & DESC_TXSTS_OWNBYDMA) {
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printf("CPU not owner of tx frame\n");
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return -EPERM;
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}
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memcpy((void *)data_start, packet, length);
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if (length < ETH_ZLEN) {
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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)
|
|
{
|
|
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);
|
|
#endif
|