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Sascha Hauerde1b6862008-04-15 00:08:20 -04001/*
2 * SMSC LAN9[12]1[567] Network driver
3 *
Stelian Popcce9cfd2008-05-08 22:52:09 +02004 * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauerde1b6862008-04-15 00:08:20 -04005 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
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.
13 *
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.
18 *
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,
22 * MA 02111-1307 USA
23 */
24
25#include <common.h>
Sascha Hauerde1b6862008-04-15 00:08:20 -040026#include <command.h>
Ben Warren736fead2009-07-20 22:01:11 -070027#include <malloc.h>
Sascha Hauerde1b6862008-04-15 00:08:20 -040028#include <net.h>
29#include <miiphy.h>
30
Mike Frysinger75ba6d62009-02-23 10:29:47 -050031#include "smc911x.h"
Sascha Hauerde1b6862008-04-15 00:08:20 -040032
Ben Warren736fead2009-07-20 22:01:11 -070033u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
Stefan Roese890a02e2008-11-12 13:31:02 +010034 __attribute__ ((weak, alias ("smc911x_reg_read")));
Ben Warren736fead2009-07-20 22:01:11 -070035void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
Stefan Roese890a02e2008-11-12 13:31:02 +010036 __attribute__ ((weak, alias ("smc911x_reg_write")));
Nobuhiro Iwamatsu33314472008-08-28 13:40:44 +090037
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +000038#define mdelay(n) udelay((n)*1000)
Sascha Hauerde1b6862008-04-15 00:08:20 -040039
Ben Warren736fead2009-07-20 22:01:11 -070040static void smx911x_handle_mac_address(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -040041{
42 unsigned long addrh, addrl;
Ben Warren736fead2009-07-20 22:01:11 -070043 uchar *m = dev->enetaddr;
Sascha Hauerde1b6862008-04-15 00:08:20 -040044
Ben Warren736fead2009-07-20 22:01:11 -070045 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);
Sascha Hauerde1b6862008-04-15 00:08:20 -040049
Mike Frysinger03f3d8d2009-02-11 19:09:54 -050050 printf(DRIVERNAME ": MAC %pM\n", m);
Ben Warren736fead2009-07-20 22:01:11 -070051}
52
53static int smc911x_miiphy_read(struct eth_device *dev,
54 u8 phy, u8 reg, u16 *val)
55{
56 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
57 ;
58
59 smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
60 MII_ACC_MII_BUSY);
61
62 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
63 ;
64
65 *val = smc911x_get_mac_csr(dev, MII_DATA);
Sascha Hauerde1b6862008-04-15 00:08:20 -040066
67 return 0;
68}
69
Ben Warren736fead2009-07-20 22:01:11 -070070static int smc911x_miiphy_write(struct eth_device *dev,
71 u8 phy, u8 reg, u16 val)
Sascha Hauerde1b6862008-04-15 00:08:20 -040072{
Ben Warren736fead2009-07-20 22:01:11 -070073 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +000074 ;
Sascha Hauerde1b6862008-04-15 00:08:20 -040075
Ben Warren736fead2009-07-20 22:01:11 -070076 smc911x_set_mac_csr(dev, MII_DATA, val);
77 smc911x_set_mac_csr(dev, MII_ACC,
Sascha Hauerde1b6862008-04-15 00:08:20 -040078 phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
79
Ben Warren736fead2009-07-20 22:01:11 -070080 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +000081 ;
Sascha Hauerde1b6862008-04-15 00:08:20 -040082 return 0;
83}
84
Ben Warren736fead2009-07-20 22:01:11 -070085static int smc911x_phy_reset(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -040086{
87 u32 reg;
88
Ben Warren736fead2009-07-20 22:01:11 -070089 reg = smc911x_reg_read(dev, PMT_CTRL);
Sascha Hauerde1b6862008-04-15 00:08:20 -040090 reg &= ~0xfffff030;
91 reg |= PMT_CTRL_PHY_RST;
Ben Warren736fead2009-07-20 22:01:11 -070092 smc911x_reg_write(dev, PMT_CTRL, reg);
Sascha Hauerde1b6862008-04-15 00:08:20 -040093
94 mdelay(100);
95
96 return 0;
97}
98
Ben Warren736fead2009-07-20 22:01:11 -070099static void smc911x_phy_configure(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400100{
101 int timeout;
102 u16 status;
103
Ben Warren736fead2009-07-20 22:01:11 -0700104 smc911x_phy_reset(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400105
Ben Warren736fead2009-07-20 22:01:11 -0700106 smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_RESET);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400107 mdelay(1);
Ben Warren736fead2009-07-20 22:01:11 -0700108 smc911x_miiphy_write(dev, 1, PHY_ANAR, 0x01e1);
109 smc911x_miiphy_write(dev, 1, PHY_BMCR, PHY_BMCR_AUTON |
110 PHY_BMCR_RST_NEG);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400111
112 timeout = 5000;
113 do {
114 mdelay(1);
115 if ((timeout--) == 0)
116 goto err_out;
117
Ben Warren736fead2009-07-20 22:01:11 -0700118 if (smc911x_miiphy_read(dev, 1, PHY_BMSR, &status) != 0)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400119 goto err_out;
120 } while (!(status & PHY_BMSR_LS));
121
122 printf(DRIVERNAME ": phy initialized\n");
123
124 return;
125
126err_out:
127 printf(DRIVERNAME ": autonegotiation timed out\n");
128}
129
Ben Warren736fead2009-07-20 22:01:11 -0700130static void smc911x_enable(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400131{
132 /* Enable TX */
Ben Warren736fead2009-07-20 22:01:11 -0700133 smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400134
Ben Warren736fead2009-07-20 22:01:11 -0700135 smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400136
Ben Warren736fead2009-07-20 22:01:11 -0700137 smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400138
139 /* no padding to start of packets */
Ben Warren736fead2009-07-20 22:01:11 -0700140 smc911x_reg_write(dev, RX_CFG, 0);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400141
Ben Warren736fead2009-07-20 22:01:11 -0700142 smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
143 MAC_CR_HBDIS);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400144
145}
146
Ben Warren736fead2009-07-20 22:01:11 -0700147static int smc911x_init(struct eth_device *dev, bd_t * bd)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400148{
Olof Johansson2a6cc972009-09-29 10:21:29 -0400149 struct chip_id *id = dev->priv;
Sascha Hauerde1b6862008-04-15 00:08:20 -0400150
Olof Johansson2a6cc972009-09-29 10:21:29 -0400151 printf(DRIVERNAME ": detected %s controller\n", id->name);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400152
Ben Warren736fead2009-07-20 22:01:11 -0700153 smc911x_reset(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400154
155 /* Configure the PHY, initialize the link state */
Ben Warren736fead2009-07-20 22:01:11 -0700156 smc911x_phy_configure(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400157
Ben Warren736fead2009-07-20 22:01:11 -0700158 smx911x_handle_mac_address(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400159
160 /* Turn on Tx + Rx */
Ben Warren736fead2009-07-20 22:01:11 -0700161 smc911x_enable(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400162
163 return 0;
Sascha Hauerde1b6862008-04-15 00:08:20 -0400164}
165
Ben Warren736fead2009-07-20 22:01:11 -0700166static int smc911x_send(struct eth_device *dev,
167 volatile void *packet, int length)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400168{
169 u32 *data = (u32*)packet;
170 u32 tmplen;
171 u32 status;
172
Ben Warren736fead2009-07-20 22:01:11 -0700173 smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
174 TX_CMD_A_INT_LAST_SEG | length);
175 smc911x_reg_write(dev, TX_DATA_FIFO, length);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400176
177 tmplen = (length + 3) / 4;
178
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000179 while (tmplen--)
Ben Warren736fead2009-07-20 22:01:11 -0700180 pkt_data_push(dev, TX_DATA_FIFO, *data++);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400181
182 /* wait for transmission */
Ben Warren736fead2009-07-20 22:01:11 -0700183 while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
184 TX_FIFO_INF_TSUSED) >> 16));
Sascha Hauerde1b6862008-04-15 00:08:20 -0400185
186 /* get status. Ignore 'no carrier' error, it has no meaning for
187 * full duplex operation
188 */
Ben Warren736fead2009-07-20 22:01:11 -0700189 status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
190 (TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
191 TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400192
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000193 if (!status)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400194 return 0;
195
196 printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
197 status & TX_STS_LOC ? "TX_STS_LOC " : "",
198 status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
199 status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
200 status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
201 status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
202
203 return -1;
204}
205
Ben Warren736fead2009-07-20 22:01:11 -0700206static void smc911x_halt(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400207{
Ben Warren736fead2009-07-20 22:01:11 -0700208 smc911x_reset(dev);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400209}
210
Ben Warren736fead2009-07-20 22:01:11 -0700211static int smc911x_rx(struct eth_device *dev)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400212{
213 u32 *data = (u32 *)NetRxPackets[0];
214 u32 pktlen, tmplen;
215 u32 status;
216
Ben Warren736fead2009-07-20 22:01:11 -0700217 if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
218 status = smc911x_reg_read(dev, RX_STATUS_FIFO);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400219 pktlen = (status & RX_STS_PKT_LEN) >> 16;
220
Ben Warren736fead2009-07-20 22:01:11 -0700221 smc911x_reg_write(dev, RX_CFG, 0);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400222
223 tmplen = (pktlen + 2+ 3) / 4;
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000224 while (tmplen--)
Ben Warren736fead2009-07-20 22:01:11 -0700225 *data++ = pkt_data_pull(dev, RX_DATA_FIFO);
Sascha Hauerde1b6862008-04-15 00:08:20 -0400226
Guennadi Liakhovetski3e0f3312008-04-29 12:35:08 +0000227 if (status & RX_STS_ES)
Sascha Hauerde1b6862008-04-15 00:08:20 -0400228 printf(DRIVERNAME
229 ": dropped bad packet. Status: 0x%08x\n",
230 status);
231 else
232 NetReceive(NetRxPackets[0], pktlen);
233 }
234
235 return 0;
236}
Ben Warren736fead2009-07-20 22:01:11 -0700237
238int smc911x_initialize(u8 dev_num, int base_addr)
239{
240 unsigned long addrl, addrh;
241 struct eth_device *dev;
242
243 dev = malloc(sizeof(*dev));
244 if (!dev) {
245 free(dev);
246 return 0;
247 }
248 memset(dev, 0, sizeof(*dev));
249
250 dev->iobase = base_addr;
251
252 addrh = smc911x_get_mac_csr(dev, ADDRH);
253 addrl = smc911x_get_mac_csr(dev, ADDRL);
254 dev->enetaddr[0] = addrl;
255 dev->enetaddr[1] = addrl >> 8;
256 dev->enetaddr[2] = addrl >> 16;
257 dev->enetaddr[3] = addrl >> 24;
258 dev->enetaddr[4] = addrh;
259 dev->enetaddr[5] = addrh >> 8;
260
261 dev->init = smc911x_init;
262 dev->halt = smc911x_halt;
263 dev->send = smc911x_send;
264 dev->recv = smc911x_rx;
265 sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
266
Olof Johansson2a6cc972009-09-29 10:21:29 -0400267 /* Try to detect chip. Will fail if not present. */
268 if (smc911x_detect_chip(dev)) {
269 free(dev);
270 return 0;
271 }
272
Ben Warren736fead2009-07-20 22:01:11 -0700273 eth_register(dev);
274 return 0;
275}