2 * SMSC LAN9[12]1[567] Network driver
4 * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
33 u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
34 __attribute__ ((weak, alias ("smc911x_reg_read")));
35 void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
36 __attribute__ ((weak, alias ("smc911x_reg_write")));
38 #define mdelay(n) udelay((n)*1000)
40 static void smx911x_handle_mac_address(struct eth_device *dev)
42 unsigned long addrh, addrl;
43 uchar *m = dev->enetaddr;
45 addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
46 addrh = m[4] | (m[5] << 8);
47 smc911x_set_mac_csr(dev, ADDRL, addrl);
48 smc911x_set_mac_csr(dev, ADDRH, addrh);
50 printf(DRIVERNAME ": MAC %pM\n", m);
53 static int smc911x_miiphy_read(struct eth_device *dev,
54 u8 phy, u8 reg, u16 *val)
56 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
59 smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
62 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
65 *val = smc911x_get_mac_csr(dev, MII_DATA);
70 static int smc911x_miiphy_write(struct eth_device *dev,
71 u8 phy, u8 reg, u16 val)
73 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
76 smc911x_set_mac_csr(dev, MII_DATA, val);
77 smc911x_set_mac_csr(dev, MII_ACC,
78 phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
80 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
85 static int smc911x_phy_reset(struct eth_device *dev)
89 reg = smc911x_reg_read(dev, PMT_CTRL);
91 reg |= PMT_CTRL_PHY_RST;
92 smc911x_reg_write(dev, PMT_CTRL, reg);
99 static void smc911x_phy_configure(struct eth_device *dev)
104 smc911x_phy_reset(dev);
106 smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_RESET);
108 smc911x_miiphy_write(dev, 1, PHY_ANAR, 0x01e1);
109 smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_AUTON |
115 if ((timeout--) == 0)
118 if (smc911x_miiphy_read(dev, 1, PHY_BMSR, &status) != 0)
120 } while (!(status & PHY_BMSR_LS));
122 printf(DRIVERNAME ": phy initialized\n");
127 printf(DRIVERNAME ": autonegotiation timed out\n");
130 static void smc911x_enable(struct eth_device *dev)
133 smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
135 smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
137 smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
139 /* no padding to start of packets */
140 smc911x_reg_write(dev, RX_CFG, 0);
142 smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
147 static int smc911x_init(struct eth_device *dev, bd_t * bd)
149 printf(DRIVERNAME ": initializing\n");
151 if (smc911x_detect_chip(dev))
156 /* Configure the PHY, initialize the link state */
157 smc911x_phy_configure(dev);
159 smx911x_handle_mac_address(dev);
161 /* Turn on Tx + Rx */
170 static int smc911x_send(struct eth_device *dev,
171 volatile void *packet, int length)
173 u32 *data = (u32*)packet;
177 smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
178 TX_CMD_A_INT_LAST_SEG | length);
179 smc911x_reg_write(dev, TX_DATA_FIFO, length);
181 tmplen = (length + 3) / 4;
184 pkt_data_push(dev, TX_DATA_FIFO, *data++);
186 /* wait for transmission */
187 while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
188 TX_FIFO_INF_TSUSED) >> 16));
190 /* get status. Ignore 'no carrier' error, it has no meaning for
191 * full duplex operation
193 status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
194 (TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
195 TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
200 printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
201 status & TX_STS_LOC ? "TX_STS_LOC " : "",
202 status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
203 status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
204 status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
205 status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
210 static void smc911x_halt(struct eth_device *dev)
215 static int smc911x_rx(struct eth_device *dev)
217 u32 *data = (u32 *)NetRxPackets[0];
221 if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
222 status = smc911x_reg_read(dev, RX_STATUS_FIFO);
223 pktlen = (status & RX_STS_PKT_LEN) >> 16;
225 smc911x_reg_write(dev, RX_CFG, 0);
227 tmplen = (pktlen + 2+ 3) / 4;
229 *data++ = pkt_data_pull(dev, RX_DATA_FIFO);
231 if (status & RX_STS_ES)
233 ": dropped bad packet. Status: 0x%08x\n",
236 NetReceive(NetRxPackets[0], pktlen);
242 int smc911x_initialize(u8 dev_num, int base_addr)
244 unsigned long addrl, addrh;
245 struct eth_device *dev;
247 dev = malloc(sizeof(*dev));
252 memset(dev, 0, sizeof(*dev));
254 dev->iobase = base_addr;
256 addrh = smc911x_get_mac_csr(dev, ADDRH);
257 addrl = smc911x_get_mac_csr(dev, ADDRL);
258 dev->enetaddr[0] = addrl;
259 dev->enetaddr[1] = addrl >> 8;
260 dev->enetaddr[2] = addrl >> 16;
261 dev->enetaddr[3] = addrl >> 24;
262 dev->enetaddr[4] = addrh;
263 dev->enetaddr[5] = addrh >> 8;
265 dev->init = smc911x_init;
266 dev->halt = smc911x_halt;
267 dev->send = smc911x_send;
268 dev->recv = smc911x_rx;
269 sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);