2 * SMSC LAN9[12]1[567] Network driver
4 * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
6 * SPDX-License-Identifier: GPL-2.0+
17 u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
18 __attribute__ ((weak, alias ("smc911x_reg_read")));
19 void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
20 __attribute__ ((weak, alias ("smc911x_reg_write")));
22 static void smc911x_handle_mac_address(struct eth_device *dev)
24 unsigned long addrh, addrl;
25 uchar *m = dev->enetaddr;
27 addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
28 addrh = m[4] | (m[5] << 8);
29 smc911x_set_mac_csr(dev, ADDRL, addrl);
30 smc911x_set_mac_csr(dev, ADDRH, addrh);
32 printf(DRIVERNAME ": MAC %pM\n", m);
35 static int smc911x_eth_phy_read(struct eth_device *dev,
36 u8 phy, u8 reg, u16 *val)
38 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
41 smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
44 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
47 *val = smc911x_get_mac_csr(dev, MII_DATA);
52 static int smc911x_eth_phy_write(struct eth_device *dev,
53 u8 phy, u8 reg, u16 val)
55 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
58 smc911x_set_mac_csr(dev, MII_DATA, val);
59 smc911x_set_mac_csr(dev, MII_ACC,
60 phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
62 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
67 static int smc911x_phy_reset(struct eth_device *dev)
71 reg = smc911x_reg_read(dev, PMT_CTRL);
73 reg |= PMT_CTRL_PHY_RST;
74 smc911x_reg_write(dev, PMT_CTRL, reg);
81 static void smc911x_phy_configure(struct eth_device *dev)
86 smc911x_phy_reset(dev);
88 smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET);
90 smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1);
91 smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE |
100 if (smc911x_eth_phy_read(dev, 1, MII_BMSR, &status) != 0)
102 } while (!(status & BMSR_LSTATUS));
104 printf(DRIVERNAME ": phy initialized\n");
109 printf(DRIVERNAME ": autonegotiation timed out\n");
112 static void smc911x_enable(struct eth_device *dev)
115 smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
117 smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
119 smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
121 /* no padding to start of packets */
122 smc911x_reg_write(dev, RX_CFG, 0);
124 smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
129 static int smc911x_init(struct eth_device *dev, bd_t * bd)
131 struct chip_id *id = dev->priv;
133 printf(DRIVERNAME ": detected %s controller\n", id->name);
137 /* Configure the PHY, initialize the link state */
138 smc911x_phy_configure(dev);
140 smc911x_handle_mac_address(dev);
142 /* Turn on Tx + Rx */
148 static int smc911x_send(struct eth_device *dev, void *packet, int length)
150 u32 *data = (u32*)packet;
154 smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
155 TX_CMD_A_INT_LAST_SEG | length);
156 smc911x_reg_write(dev, TX_DATA_FIFO, length);
158 tmplen = (length + 3) / 4;
161 pkt_data_push(dev, TX_DATA_FIFO, *data++);
163 /* wait for transmission */
164 while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
165 TX_FIFO_INF_TSUSED) >> 16));
167 /* get status. Ignore 'no carrier' error, it has no meaning for
168 * full duplex operation
170 status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
171 (TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
172 TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
177 printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
178 status & TX_STS_LOC ? "TX_STS_LOC " : "",
179 status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
180 status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
181 status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
182 status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
187 static void smc911x_halt(struct eth_device *dev)
190 smc911x_handle_mac_address(dev);
193 static int smc911x_rx(struct eth_device *dev)
195 u32 *data = (u32 *)net_rx_packets[0];
199 if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
200 status = smc911x_reg_read(dev, RX_STATUS_FIFO);
201 pktlen = (status & RX_STS_PKT_LEN) >> 16;
203 smc911x_reg_write(dev, RX_CFG, 0);
205 tmplen = (pktlen + 3) / 4;
207 *data++ = pkt_data_pull(dev, RX_DATA_FIFO);
209 if (status & RX_STS_ES)
211 ": dropped bad packet. Status: 0x%08x\n",
214 net_process_received_packet(net_rx_packets[0], pktlen);
220 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
221 /* wrapper for smc911x_eth_phy_read */
222 static int smc911x_miiphy_read(const char *devname, u8 phy, u8 reg, u16 *val)
224 struct eth_device *dev = eth_get_dev_by_name(devname);
226 return smc911x_eth_phy_read(dev, phy, reg, val);
229 /* wrapper for smc911x_eth_phy_write */
230 static int smc911x_miiphy_write(const char *devname, u8 phy, u8 reg, u16 val)
232 struct eth_device *dev = eth_get_dev_by_name(devname);
234 return smc911x_eth_phy_write(dev, phy, reg, val);
239 int smc911x_initialize(u8 dev_num, int base_addr)
241 unsigned long addrl, addrh;
242 struct eth_device *dev;
244 dev = malloc(sizeof(*dev));
248 memset(dev, 0, sizeof(*dev));
250 dev->iobase = base_addr;
252 /* Try to detect chip. Will fail if not present. */
253 if (smc911x_detect_chip(dev)) {
258 addrh = smc911x_get_mac_csr(dev, ADDRH);
259 addrl = smc911x_get_mac_csr(dev, ADDRL);
260 if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
261 /* address is obtained from optional eeprom */
262 dev->enetaddr[0] = addrl;
263 dev->enetaddr[1] = addrl >> 8;
264 dev->enetaddr[2] = addrl >> 16;
265 dev->enetaddr[3] = addrl >> 24;
266 dev->enetaddr[4] = addrh;
267 dev->enetaddr[5] = addrh >> 8;
270 dev->init = smc911x_init;
271 dev->halt = smc911x_halt;
272 dev->send = smc911x_send;
273 dev->recv = smc911x_rx;
274 sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
278 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
279 miiphy_register(dev->name, smc911x_miiphy_read, smc911x_miiphy_write);