diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/net/smc911x.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/net/smc911x.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/drivers/net/smc911x.c b/qemu/roms/u-boot/drivers/net/smc911x.c new file mode 100644 index 000000000..b097c1a56 --- /dev/null +++ b/qemu/roms/u-boot/drivers/net/smc911x.c @@ -0,0 +1,282 @@ +/* + * SMSC LAN9[12]1[567] Network driver + * + * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <command.h> +#include <malloc.h> +#include <net.h> +#include <miiphy.h> + +#include "smc911x.h" + +u32 pkt_data_pull(struct eth_device *dev, u32 addr) \ + __attribute__ ((weak, alias ("smc911x_reg_read"))); +void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \ + __attribute__ ((weak, alias ("smc911x_reg_write"))); + +static void smc911x_handle_mac_address(struct eth_device *dev) +{ + unsigned long addrh, addrl; + uchar *m = dev->enetaddr; + + addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24); + addrh = m[4] | (m[5] << 8); + smc911x_set_mac_csr(dev, ADDRL, addrl); + smc911x_set_mac_csr(dev, ADDRH, addrh); + + printf(DRIVERNAME ": MAC %pM\n", m); +} + +static int smc911x_eth_phy_read(struct eth_device *dev, + u8 phy, u8 reg, u16 *val) +{ + while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY) + ; + + smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 | + MII_ACC_MII_BUSY); + + while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY) + ; + + *val = smc911x_get_mac_csr(dev, MII_DATA); + + return 0; +} + +static int smc911x_eth_phy_write(struct eth_device *dev, + u8 phy, u8 reg, u16 val) +{ + while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY) + ; + + smc911x_set_mac_csr(dev, MII_DATA, val); + smc911x_set_mac_csr(dev, MII_ACC, + phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE); + + while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY) + ; + return 0; +} + +static int smc911x_phy_reset(struct eth_device *dev) +{ + u32 reg; + + reg = smc911x_reg_read(dev, PMT_CTRL); + reg &= ~0xfffff030; + reg |= PMT_CTRL_PHY_RST; + smc911x_reg_write(dev, PMT_CTRL, reg); + + mdelay(100); + + return 0; +} + +static void smc911x_phy_configure(struct eth_device *dev) +{ + int timeout; + u16 status; + + smc911x_phy_reset(dev); + + smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET); + mdelay(1); + smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1); + smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE | + BMCR_ANRESTART); + + timeout = 5000; + do { + mdelay(1); + if ((timeout--) == 0) + goto err_out; + + if (smc911x_eth_phy_read(dev, 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 eth_device *dev) +{ + /* Enable TX */ + smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF); + + smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000); + + smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON); + + /* no padding to start of packets */ + smc911x_reg_write(dev, RX_CFG, 0); + + smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN | + MAC_CR_HBDIS); + +} + +static int smc911x_init(struct eth_device *dev, bd_t * bd) +{ + struct chip_id *id = dev->priv; + + printf(DRIVERNAME ": detected %s controller\n", id->name); + + smc911x_reset(dev); + + /* Configure the PHY, initialize the link state */ + smc911x_phy_configure(dev); + + smc911x_handle_mac_address(dev); + + /* Turn on Tx + Rx */ + smc911x_enable(dev); + + return 0; +} + +static int smc911x_send(struct eth_device *dev, void *packet, int length) +{ + u32 *data = (u32*)packet; + u32 tmplen; + u32 status; + + smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG | + TX_CMD_A_INT_LAST_SEG | length); + smc911x_reg_write(dev, TX_DATA_FIFO, length); + + tmplen = (length + 3) / 4; + + while (tmplen--) + pkt_data_push(dev, TX_DATA_FIFO, *data++); + + /* wait for transmission */ + while (!((smc911x_reg_read(dev, 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(dev, 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(struct eth_device *dev) +{ + smc911x_reset(dev); +} + +static int smc911x_rx(struct eth_device *dev) +{ + u32 *data = (u32 *)NetRxPackets[0]; + u32 pktlen, tmplen; + u32 status; + + if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) { + status = smc911x_reg_read(dev, RX_STATUS_FIFO); + pktlen = (status & RX_STS_PKT_LEN) >> 16; + + smc911x_reg_write(dev, RX_CFG, 0); + + tmplen = (pktlen + 3) / 4; + while (tmplen--) + *data++ = pkt_data_pull(dev, RX_DATA_FIFO); + + if (status & RX_STS_ES) + printf(DRIVERNAME + ": dropped bad packet. Status: 0x%08x\n", + status); + else + NetReceive(NetRxPackets[0], pktlen); + } + + return 0; +} + +#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) +/* wrapper for smc911x_eth_phy_read */ +static int smc911x_miiphy_read(const char *devname, u8 phy, u8 reg, u16 *val) +{ + struct eth_device *dev = eth_get_dev_by_name(devname); + if (dev) + return smc911x_eth_phy_read(dev, phy, reg, val); + return -1; +} +/* wrapper for smc911x_eth_phy_write */ +static int smc911x_miiphy_write(const char *devname, u8 phy, u8 reg, u16 val) +{ + struct eth_device *dev = eth_get_dev_by_name(devname); + if (dev) + return smc911x_eth_phy_write(dev, phy, reg, val); + return -1; +} +#endif + +int smc911x_initialize(u8 dev_num, int base_addr) +{ + unsigned long addrl, addrh; + struct eth_device *dev; + + dev = malloc(sizeof(*dev)); + if (!dev) { + return -1; + } + memset(dev, 0, sizeof(*dev)); + + dev->iobase = base_addr; + + /* Try to detect chip. Will fail if not present. */ + if (smc911x_detect_chip(dev)) { + free(dev); + return 0; + } + + addrh = smc911x_get_mac_csr(dev, ADDRH); + addrl = smc911x_get_mac_csr(dev, ADDRL); + if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) { + /* address is obtained from optional eeprom */ + dev->enetaddr[0] = addrl; + dev->enetaddr[1] = addrl >> 8; + dev->enetaddr[2] = addrl >> 16; + dev->enetaddr[3] = addrl >> 24; + dev->enetaddr[4] = addrh; + dev->enetaddr[5] = addrh >> 8; + } + + dev->init = smc911x_init; + dev->halt = smc911x_halt; + dev->send = smc911x_send; + dev->recv = smc911x_rx; + sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num); + + eth_register(dev); + +#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) + miiphy_register(dev->name, smc911x_miiphy_read, smc911x_miiphy_write); +#endif + + return 1; +} |