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8#include <common.h>
9#include <command.h>
10#include <malloc.h>
11#include <net.h>
12#include <miiphy.h>
13
14#include "smc911x.h"
15
16u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
17 __attribute__ ((weak, alias ("smc911x_reg_read")));
18void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
19 __attribute__ ((weak, alias ("smc911x_reg_write")));
20
21static void smc911x_handle_mac_address(struct eth_device *dev)
22{
23 unsigned long addrh, addrl;
24 uchar *m = dev->enetaddr;
25
26 addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
27 addrh = m[4] | (m[5] << 8);
28 smc911x_set_mac_csr(dev, ADDRL, addrl);
29 smc911x_set_mac_csr(dev, ADDRH, addrh);
30
31 printf(DRIVERNAME ": MAC %pM\n", m);
32}
33
34static int smc911x_eth_phy_read(struct eth_device *dev,
35 u8 phy, u8 reg, u16 *val)
36{
37 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
38 ;
39
40 smc911x_set_mac_csr(dev, MII_ACC, phy << 11 | reg << 6 |
41 MII_ACC_MII_BUSY);
42
43 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
44 ;
45
46 *val = smc911x_get_mac_csr(dev, MII_DATA);
47
48 return 0;
49}
50
51static int smc911x_eth_phy_write(struct eth_device *dev,
52 u8 phy, u8 reg, u16 val)
53{
54 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
55 ;
56
57 smc911x_set_mac_csr(dev, MII_DATA, val);
58 smc911x_set_mac_csr(dev, MII_ACC,
59 phy << 11 | reg << 6 | MII_ACC_MII_BUSY | MII_ACC_MII_WRITE);
60
61 while (smc911x_get_mac_csr(dev, MII_ACC) & MII_ACC_MII_BUSY)
62 ;
63 return 0;
64}
65
66static int smc911x_phy_reset(struct eth_device *dev)
67{
68 u32 reg;
69
70 reg = smc911x_reg_read(dev, PMT_CTRL);
71 reg &= ~0xfffff030;
72 reg |= PMT_CTRL_PHY_RST;
73 smc911x_reg_write(dev, PMT_CTRL, reg);
74
75 mdelay(100);
76
77 return 0;
78}
79
80static void smc911x_phy_configure(struct eth_device *dev)
81{
82 int timeout;
83 u16 status;
84
85 smc911x_phy_reset(dev);
86
87 smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_RESET);
88 mdelay(1);
89 smc911x_eth_phy_write(dev, 1, MII_ADVERTISE, 0x01e1);
90 smc911x_eth_phy_write(dev, 1, MII_BMCR, BMCR_ANENABLE |
91 BMCR_ANRESTART);
92
93 timeout = 5000;
94 do {
95 mdelay(1);
96 if ((timeout--) == 0)
97 goto err_out;
98
99 if (smc911x_eth_phy_read(dev, 1, MII_BMSR, &status) != 0)
100 goto err_out;
101 } while (!(status & BMSR_LSTATUS));
102
103 printf(DRIVERNAME ": phy initialized\n");
104
105 return;
106
107err_out:
108 printf(DRIVERNAME ": autonegotiation timed out\n");
109}
110
111static void smc911x_enable(struct eth_device *dev)
112{
113
114 smc911x_reg_write(dev, HW_CFG, 8 << 16 | HW_CFG_SF);
115
116 smc911x_reg_write(dev, GPT_CFG, GPT_CFG_TIMER_EN | 10000);
117
118 smc911x_reg_write(dev, TX_CFG, TX_CFG_TX_ON);
119
120
121 smc911x_reg_write(dev, RX_CFG, 0);
122
123 smc911x_set_mac_csr(dev, MAC_CR, MAC_CR_TXEN | MAC_CR_RXEN |
124 MAC_CR_HBDIS);
125
126}
127
128static int smc911x_init(struct eth_device *dev, bd_t * bd)
129{
130 struct chip_id *id = dev->priv;
131
132 printf(DRIVERNAME ": detected %s controller\n", id->name);
133
134 smc911x_reset(dev);
135
136
137 smc911x_phy_configure(dev);
138
139 smc911x_handle_mac_address(dev);
140
141
142 smc911x_enable(dev);
143
144 return 0;
145}
146
147static int smc911x_send(struct eth_device *dev, void *packet, int length)
148{
149 u32 *data = (u32*)packet;
150 u32 tmplen;
151 u32 status;
152
153 smc911x_reg_write(dev, TX_DATA_FIFO, TX_CMD_A_INT_FIRST_SEG |
154 TX_CMD_A_INT_LAST_SEG | length);
155 smc911x_reg_write(dev, TX_DATA_FIFO, length);
156
157 tmplen = (length + 3) / 4;
158
159 while (tmplen--)
160 pkt_data_push(dev, TX_DATA_FIFO, *data++);
161
162
163 while (!((smc911x_reg_read(dev, TX_FIFO_INF) &
164 TX_FIFO_INF_TSUSED) >> 16));
165
166
167
168
169 status = smc911x_reg_read(dev, TX_STATUS_FIFO) &
170 (TX_STS_LOC | TX_STS_LATE_COLL | TX_STS_MANY_COLL |
171 TX_STS_MANY_DEFER | TX_STS_UNDERRUN);
172
173 if (!status)
174 return 0;
175
176 printf(DRIVERNAME ": failed to send packet: %s%s%s%s%s\n",
177 status & TX_STS_LOC ? "TX_STS_LOC " : "",
178 status & TX_STS_LATE_COLL ? "TX_STS_LATE_COLL " : "",
179 status & TX_STS_MANY_COLL ? "TX_STS_MANY_COLL " : "",
180 status & TX_STS_MANY_DEFER ? "TX_STS_MANY_DEFER " : "",
181 status & TX_STS_UNDERRUN ? "TX_STS_UNDERRUN" : "");
182
183 return -1;
184}
185
186static void smc911x_halt(struct eth_device *dev)
187{
188 smc911x_reset(dev);
189 smc911x_handle_mac_address(dev);
190}
191
192static int smc911x_rx(struct eth_device *dev)
193{
194 u32 *data = (u32 *)net_rx_packets[0];
195 u32 pktlen, tmplen;
196 u32 status;
197
198 if ((smc911x_reg_read(dev, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED) >> 16) {
199 status = smc911x_reg_read(dev, RX_STATUS_FIFO);
200 pktlen = (status & RX_STS_PKT_LEN) >> 16;
201
202 smc911x_reg_write(dev, RX_CFG, 0);
203
204 tmplen = (pktlen + 3) / 4;
205 while (tmplen--)
206 *data++ = pkt_data_pull(dev, RX_DATA_FIFO);
207
208 if (status & RX_STS_ES)
209 printf(DRIVERNAME
210 ": dropped bad packet. Status: 0x%08x\n",
211 status);
212 else
213 net_process_received_packet(net_rx_packets[0], pktlen);
214 }
215
216 return 0;
217}
218
219#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
220
221static int smc911x_miiphy_read(struct mii_dev *bus, int phy, int devad,
222 int reg)
223{
224 u16 val = 0;
225 struct eth_device *dev = eth_get_dev_by_name(bus->name);
226 if (dev) {
227 int retval = smc911x_eth_phy_read(dev, phy, reg, &val);
228 if (retval < 0)
229 return retval;
230 return val;
231 }
232 return -ENODEV;
233}
234
235static int smc911x_miiphy_write(struct mii_dev *bus, int phy, int devad,
236 int reg, u16 val)
237{
238 struct eth_device *dev = eth_get_dev_by_name(bus->name);
239 if (dev)
240 return smc911x_eth_phy_write(dev, phy, reg, val);
241 return -ENODEV;
242}
243#endif
244
245int smc911x_initialize(u8 dev_num, int base_addr)
246{
247 unsigned long addrl, addrh;
248 struct eth_device *dev;
249
250 dev = malloc(sizeof(*dev));
251 if (!dev) {
252 return -1;
253 }
254 memset(dev, 0, sizeof(*dev));
255
256 dev->iobase = base_addr;
257
258
259 if (smc911x_detect_chip(dev)) {
260 free(dev);
261 return 0;
262 }
263
264 addrh = smc911x_get_mac_csr(dev, ADDRH);
265 addrl = smc911x_get_mac_csr(dev, ADDRL);
266 if (!(addrl == 0xffffffff && addrh == 0x0000ffff)) {
267
268 dev->enetaddr[0] = addrl;
269 dev->enetaddr[1] = addrl >> 8;
270 dev->enetaddr[2] = addrl >> 16;
271 dev->enetaddr[3] = addrl >> 24;
272 dev->enetaddr[4] = addrh;
273 dev->enetaddr[5] = addrh >> 8;
274 }
275
276 dev->init = smc911x_init;
277 dev->halt = smc911x_halt;
278 dev->send = smc911x_send;
279 dev->recv = smc911x_rx;
280 sprintf(dev->name, "%s-%hu", DRIVERNAME, dev_num);
281
282 eth_register(dev);
283
284#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
285 int retval;
286 struct mii_dev *mdiodev = mdio_alloc();
287 if (!mdiodev)
288 return -ENOMEM;
289 strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
290 mdiodev->read = smc911x_miiphy_read;
291 mdiodev->write = smc911x_miiphy_write;
292
293 retval = mdio_register(mdiodev);
294 if (retval < 0)
295 return retval;
296#endif
297
298 return 1;
299}
300
