123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646 |
- // SPDX-License-Identifier: GPL-2.0+
- /*
- * SMSC LAN9[12]1[567] Network driver
- *
- * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
- */
- #include <common.h>
- #include <command.h>
- #include <malloc.h>
- #include <net.h>
- #include <miiphy.h>
- #include <linux/io.h>
- #include <linux/delay.h>
- #include <linux/types.h>
- #include "smc911x.h"
- struct chip_id {
- u16 id;
- char *name;
- };
- struct smc911x_priv {
- #ifndef CONFIG_DM_ETH
- struct eth_device dev;
- #endif
- phys_addr_t iobase;
- const struct chip_id *chipid;
- unsigned char enetaddr[6];
- };
- static const struct chip_id chip_ids[] = {
- { CHIP_89218, "LAN89218" },
- { CHIP_9115, "LAN9115" },
- { CHIP_9116, "LAN9116" },
- { CHIP_9117, "LAN9117" },
- { CHIP_9118, "LAN9118" },
- { CHIP_9211, "LAN9211" },
- { CHIP_9215, "LAN9215" },
- { CHIP_9216, "LAN9216" },
- { CHIP_9217, "LAN9217" },
- { CHIP_9218, "LAN9218" },
- { CHIP_9220, "LAN9220" },
- { CHIP_9221, "LAN9221" },
- { 0, NULL },
- };
- #define DRIVERNAME "smc911x"
- #if defined (CONFIG_SMC911X_32_BIT) && \
- defined (CONFIG_SMC911X_16_BIT)
- #error "SMC911X: Only one of CONFIG_SMC911X_32_BIT and \
- CONFIG_SMC911X_16_BIT shall be set"
- #endif
- #if defined (CONFIG_SMC911X_32_BIT)
- static u32 smc911x_reg_read(struct smc911x_priv *priv, u32 offset)
- {
- return readl(priv->iobase + offset);
- }
- static void smc911x_reg_write(struct smc911x_priv *priv, u32 offset, u32 val)
- {
- writel(val, priv->iobase + offset);
- }
- #elif defined (CONFIG_SMC911X_16_BIT)
- static u32 smc911x_reg_read(struct smc911x_priv *priv, u32 offset)
- {
- return (readw(priv->iobase + offset) & 0xffff) |
- (readw(priv->iobase + offset + 2) << 16);
- }
- static void smc911x_reg_write(struct smc911x_priv *priv, u32 offset, u32 val)
- {
- writew(val & 0xffff, priv->iobase + offset);
- writew(val >> 16, priv->iobase + offset + 2);
- }
- #else
- #error "SMC911X: undefined bus width"
- #endif /* CONFIG_SMC911X_16_BIT */
- static u32 smc911x_get_mac_csr(struct smc911x_priv *priv, u8 reg)
- {
- while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
- smc911x_reg_write(priv, MAC_CSR_CMD,
- MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
- while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
- return smc911x_reg_read(priv, MAC_CSR_DATA);
- }
- static void smc911x_set_mac_csr(struct smc911x_priv *priv, u8 reg, u32 data)
- {
- while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
- smc911x_reg_write(priv, MAC_CSR_DATA, data);
- smc911x_reg_write(priv, MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
- while (smc911x_reg_read(priv, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
- ;
- }
- static int smc911x_detect_chip(struct smc911x_priv *priv)
- {
- unsigned long val, i;
- val = smc911x_reg_read(priv, BYTE_TEST);
- if (val == 0xffffffff) {
- /* Special case -- no chip present */
- return -1;
- } else if (val != 0x87654321) {
- printf(DRIVERNAME ": Invalid chip endian 0x%08lx\n", val);
- return -1;
- }
- val = smc911x_reg_read(priv, ID_REV) >> 16;
- for (i = 0; chip_ids[i].id != 0; i++) {
- if (chip_ids[i].id == val) break;
- }
- if (!chip_ids[i].id) {
- printf(DRIVERNAME ": Unknown chip ID %04lx\n", val);
- return -1;
- }
- priv->chipid = &chip_ids[i];
- return 0;
- }
- static void smc911x_reset(struct smc911x_priv *priv)
- {
- int timeout;
- /*
- * Take out of PM setting first
- * Device is already wake up if PMT_CTRL_READY bit is set
- */
- if ((smc911x_reg_read(priv, PMT_CTRL) & PMT_CTRL_READY) == 0) {
- /* Write to the bytetest will take out of powerdown */
- smc911x_reg_write(priv, BYTE_TEST, 0x0);
- timeout = 10;
- while (timeout-- &&
- !(smc911x_reg_read(priv, PMT_CTRL) & PMT_CTRL_READY))
- udelay(10);
- if (timeout < 0) {
- printf(DRIVERNAME
- ": timeout waiting for PM restore\n");
- return;
- }
- }
- /* Disable interrupts */
- smc911x_reg_write(priv, INT_EN, 0);
- smc911x_reg_write(priv, HW_CFG, HW_CFG_SRST);
- timeout = 1000;
- while (timeout-- && smc911x_reg_read(priv, E2P_CMD) & E2P_CMD_EPC_BUSY)
- udelay(10);
- if (timeout < 0) {
- printf(DRIVERNAME ": reset timeout\n");
- return;
- }
- /* Reset the FIFO level and flow control settings */
- smc911x_set_mac_csr(priv, FLOW, FLOW_FCPT | FLOW_FCEN);
- smc911x_reg_write(priv, AFC_CFG, 0x0050287F);
- /* Set to LED outputs */
- smc911x_reg_write(priv, GPIO_CFG, 0x70070000);
- }
- static void smc911x_handle_mac_address(struct smc911x_priv *priv)
- {
- unsigned long addrh, addrl;
- unsigned char *m = priv->enetaddr;
- addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
- addrh = m[4] | (m[5] << 8);
- smc911x_set_mac_csr(priv, ADDRL, addrl);
- smc911x_set_mac_csr(priv, ADDRH, addrh);
- printf(DRIVERNAME ": MAC %pM\n", m);
- }
- static bool smc911x_read_mac_address(struct smc911x_priv *priv)
- {
- u32 addrh, addrl;
- /* address is obtained from optional eeprom */
- addrh = smc911x_get_mac_csr(priv, ADDRH);
- addrl = smc911x_get_mac_csr(priv, ADDRL);
- if (addrl == 0xffffffff && addrh == 0x0000ffff)
- return false;
- priv->enetaddr[0] = addrl;
- priv->enetaddr[1] = addrl >> 8;
- priv->enetaddr[2] = addrl >> 16;
- priv->enetaddr[3] = addrl >> 24;
- priv->enetaddr[4] = addrh;
- priv->enetaddr[5] = addrh >> 8;
- return true;
- }
- static int smc911x_eth_phy_read(struct smc911x_priv *priv,
- u8 phy, u8 reg, u16 *val)
- {
- while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
- ;
- smc911x_set_mac_csr(priv, MII_ACC, phy << 11 | reg << 6 |
- MII_ACC_MII_BUSY);
- while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
- ;
- *val = smc911x_get_mac_csr(priv, MII_DATA);
- return 0;
- }
- static int smc911x_eth_phy_write(struct smc911x_priv *priv,
- u8 phy, u8 reg, u16 val)
- {
- while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
- ;
- smc911x_set_mac_csr(priv, MII_DATA, val);
- smc911x_set_mac_csr(priv, MII_ACC,
- phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
- while (smc911x_get_mac_csr(priv, MII_ACC) & MII_ACC_MII_BUSY)
- ;
- return 0;
- }
- static int smc911x_phy_reset(struct smc911x_priv *priv)
- {
- u32 reg;
- reg = smc911x_reg_read(priv, PMT_CTRL);
- reg &= ~0xfffff030;
- reg |= PMT_CTRL_PHY_RST;
- smc911x_reg_write(priv, PMT_CTRL, reg);
- mdelay(100);
- return 0;
- }
- static void smc911x_phy_configure(struct smc911x_priv *priv)
- {
- int timeout;
- u16 status;
- smc911x_phy_reset(priv);
- smc911x_eth_phy_write(priv, 1, MII_BMCR, BMCR_RESET);
- mdelay(1);
- smc911x_eth_phy_write(priv, 1, MII_ADVERTISE, 0x01e1);
- smc911x_eth_phy_write(priv, 1, MII_BMCR, BMCR_ANENABLE |
- BMCR_ANRESTART);
- timeout = 5000;
- do {
- mdelay(1);
- if ((timeout--) == 0)
- goto err_out;
- if (smc911x_eth_phy_read(priv, 1, MII_BMSR, &status) != 0)
- goto err_out;
- } while (!(status & BMSR_LSTATUS));
- printf(DRIVERNAME ": phy initialized\n");
- return;
- err_out:
- printf(DRIVERNAME ": autonegotiation timed out\n");
- }
- static void smc911x_enable(struct smc911x_priv *priv)
- {
- /* Enable TX */
- smc911x_reg_write(priv, HW_CFG, 8 << 16 | HW_CFG_SF);
- smc911x_reg_write(priv, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
- smc911x_reg_write(priv, TX_CFG, TX_CFG_TX_ON);
- /* no padding to start of packets */
- smc911x_reg_write(priv, RX_CFG, 0);
- smc911x_set_mac_csr(priv, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
- MAC_CR_HBDIS);
- }
- static int smc911x_init_common(struct smc911x_priv *priv)
- {
- const struct chip_id *id = priv->chipid;
- printf(DRIVERNAME ": detected %s controller\n", id->name);
- smc911x_reset(priv);
- /* Configure the PHY, initialize the link state */
- smc911x_phy_configure(priv);
- smc911x_handle_mac_address(priv);
- /* Turn on Tx + Rx */
- smc911x_enable(priv);
- return 0;
- }
- static int smc911x_send_common(struct smc911x_priv *priv,
- void *packet, int length)
- {
- u32 *data = (u32*)packet;
- u32 tmplen;
- u32 status;
- smc911x_reg_write(priv, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
- TX_CMD_A_INT_LAST_SEG | length);
- smc911x_reg_write(priv, TX_DATA_FIFO, length);
- tmplen = (length + 3) / 4;
- while (tmplen--)
- smc911x_reg_write(priv, TX_DATA_FIFO, *data++);
- /* wait for transmission */
- while (!((smc911x_reg_read(priv, TX_FIFO_INF) &
- TX_FIFO_INF_TSUSED) >> 16));
- /* get status. Ignore 'no carrier' error, it has no meaning for
- * full duplex operation
- */
- status = smc911x_reg_read(priv, TX_STATUS_FIFO) &
- (TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
- TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
- if (!status)
- return 0;
- printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
- status & TX_STS_LOC ? "TX_STS_LOC " : "",
- status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
- status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
- status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
- status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
- return -1;
- }
- static void smc911x_halt_common(struct smc911x_priv *priv)
- {
- smc911x_reset(priv);
- smc911x_handle_mac_address(priv);
- }
- static int smc911x_recv_common(struct smc911x_priv *priv, u32 *data)
- {
- u32 pktlen, tmplen;
- u32 status;
- status = smc911x_reg_read(priv, RX_FIFO_INF);
- if (!(status & RX_FIFO_INF_RXSUSED))
- return 0;
- status = smc911x_reg_read(priv, RX_STATUS_FIFO);
- pktlen = (status & RX_STS_PKT_LEN) >> 16;
- smc911x_reg_write(priv, RX_CFG, 0);
- tmplen = (pktlen + 3) / 4;
- while (tmplen--)
- *data++ = smc911x_reg_read(priv, RX_DATA_FIFO);
- if (status & RX_STS_ES) {
- printf(DRIVERNAME
- ": dropped bad packet. Status: 0x%08x\n",
- status);
- return 0;
- }
- return pktlen;
- }
- #ifndef CONFIG_DM_ETH
- #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
- /* wrapper for smc911x_eth_phy_read */
- static int smc911x_miiphy_read(struct mii_dev *bus, int phy, int devad,
- int reg)
- {
- struct eth_device *dev = eth_get_dev_by_name(bus->name);
- struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
- u16 val = 0;
- int ret;
- if (!dev || !priv)
- return -ENODEV;
- ret = smc911x_eth_phy_read(priv, phy, reg, &val);
- if (ret < 0)
- return ret;
- return val;
- }
- /* wrapper for smc911x_eth_phy_write */
- static int smc911x_miiphy_write(struct mii_dev *bus, int phy, int devad,
- int reg, u16 val)
- {
- struct eth_device *dev = eth_get_dev_by_name(bus->name);
- struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
- if (!dev || !priv)
- return -ENODEV;
- return smc911x_eth_phy_write(priv, phy, reg, val);
- }
- static int smc911x_initialize_mii(struct smc911x_priv *priv)
- {
- struct mii_dev *mdiodev = mdio_alloc();
- int ret;
- if (!mdiodev)
- return -ENOMEM;
- strncpy(mdiodev->name, priv->dev.name, MDIO_NAME_LEN);
- mdiodev->read = smc911x_miiphy_read;
- mdiodev->write = smc911x_miiphy_write;
- ret = mdio_register(mdiodev);
- if (ret < 0) {
- mdio_free(mdiodev);
- return ret;
- }
- return 0;
- }
- #else
- static int smc911x_initialize_mii(struct smc911x_priv *priv)
- {
- return 0;
- }
- #endif
- static int smc911x_init(struct eth_device *dev, struct bd_info *bd)
- {
- struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
- return smc911x_init_common(priv);
- }
- static void smc911x_halt(struct eth_device *dev)
- {
- struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
- smc911x_halt_common(priv);
- }
- static int smc911x_send(struct eth_device *dev, void *packet, int length)
- {
- struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
- return smc911x_send_common(priv, packet, length);
- }
- static int smc911x_recv(struct eth_device *dev)
- {
- struct smc911x_priv *priv = container_of(dev, struct smc911x_priv, dev);
- u32 *data = (u32 *)net_rx_packets[0];
- int ret;
- ret = smc911x_recv_common(priv, data);
- if (ret)
- net_process_received_packet(net_rx_packets[0], ret);
- return ret;
- }
- int smc911x_initialize(u8 dev_num, int base_addr)
- {
- struct smc911x_priv *priv;
- int ret;
- priv = calloc(1, sizeof(*priv));
- if (!priv)
- return -ENOMEM;
- priv->iobase = base_addr;
- priv->dev.iobase = base_addr;
- /* Try to detect chip. Will fail if not present. */
- ret = smc911x_detect_chip(priv);
- if (ret) {
- ret = 0; /* Card not detected is not an error */
- goto err_detect;
- }
- if (smc911x_read_mac_address(priv))
- memcpy(priv->dev.enetaddr, priv->enetaddr, 6);
- priv->dev.init = smc911x_init;
- priv->dev.halt = smc911x_halt;
- priv->dev.send = smc911x_send;
- priv->dev.recv = smc911x_recv;
- sprintf(priv->dev.name, "%s-%hu", DRIVERNAME, dev_num);
- eth_register(&priv->dev);
- ret = smc911x_initialize_mii(priv);
- if (ret)
- goto err_mii;
- return 1;
- err_mii:
- eth_unregister(&priv->dev);
- err_detect:
- free(priv);
- return ret;
- }
- #else /* ifdef CONFIG_DM_ETH */
- static int smc911x_start(struct udevice *dev)
- {
- struct eth_pdata *plat = dev_get_platdata(dev);
- struct smc911x_priv *priv = dev_get_priv(dev);
- memcpy(priv->enetaddr, plat->enetaddr, sizeof(plat->enetaddr));
- return smc911x_init_common(priv);
- }
- static void smc911x_stop(struct udevice *dev)
- {
- struct smc911x_priv *priv = dev_get_priv(dev);
- smc911x_halt_common(priv);
- }
- static int smc911x_send(struct udevice *dev, void *packet, int length)
- {
- struct smc911x_priv *priv = dev_get_priv(dev);
- int ret;
- ret = smc911x_send_common(priv, packet, length);
- return ret ? 0 : -ETIMEDOUT;
- }
- static int smc911x_recv(struct udevice *dev, int flags, uchar **packetp)
- {
- struct smc911x_priv *priv = dev_get_priv(dev);
- u32 *data = (u32 *)net_rx_packets[0];
- int ret;
- ret = smc911x_recv_common(priv, data);
- if (ret)
- *packetp = (void *)data;
- return ret ? ret : -EAGAIN;
- }
- static int smc911x_read_rom_hwaddr(struct udevice *dev)
- {
- struct smc911x_priv *priv = dev_get_priv(dev);
- struct eth_pdata *pdata = dev_get_platdata(dev);
- if (!smc911x_read_mac_address(priv))
- return -ENODEV;
- memcpy(pdata->enetaddr, priv->enetaddr, sizeof(pdata->enetaddr));
- return 0;
- }
- static int smc911x_bind(struct udevice *dev)
- {
- return device_set_name(dev, dev->name);
- }
- static int smc911x_probe(struct udevice *dev)
- {
- struct smc911x_priv *priv = dev_get_priv(dev);
- int ret;
- /* Try to detect chip. Will fail if not present. */
- ret = smc911x_detect_chip(priv);
- if (ret)
- return ret;
- smc911x_read_rom_hwaddr(dev);
- return 0;
- }
- static int smc911x_ofdata_to_platdata(struct udevice *dev)
- {
- struct smc911x_priv *priv = dev_get_priv(dev);
- struct eth_pdata *pdata = dev_get_platdata(dev);
- pdata->iobase = dev_read_addr(dev);
- priv->iobase = pdata->iobase;
- return 0;
- }
- static const struct eth_ops smc911x_ops = {
- .start = smc911x_start,
- .send = smc911x_send,
- .recv = smc911x_recv,
- .stop = smc911x_stop,
- .read_rom_hwaddr = smc911x_read_rom_hwaddr,
- };
- static const struct udevice_id smc911x_ids[] = {
- { .compatible = "smsc,lan9115" },
- { }
- };
- U_BOOT_DRIVER(smc911x) = {
- .name = "eth_smc911x",
- .id = UCLASS_ETH,
- .of_match = smc911x_ids,
- .bind = smc911x_bind,
- .ofdata_to_platdata = smc911x_ofdata_to_platdata,
- .probe = smc911x_probe,
- .ops = &smc911x_ops,
- .priv_auto_alloc_size = sizeof(struct smc911x_priv),
- .platdata_auto_alloc_size = sizeof(struct eth_pdata),
- .flags = DM_FLAG_ALLOC_PRIV_DMA,
- };
- #endif
|