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9#include <config.h>
10#include <common.h>
11#include <cpu_func.h>
12#include <env.h>
13#include <malloc.h>
14#include <net.h>
15#include <linux/delay.h>
16#include <linux/io.h>
17
18#include "ftmac100.h"
19#ifdef CONFIG_DM_ETH
20#include <dm.h>
21DECLARE_GLOBAL_DATA_PTR;
22#endif
23#define ETH_ZLEN 60
24
25struct ftmac100_data {
26 struct ftmac100_txdes txdes[1];
27 struct ftmac100_rxdes rxdes[PKTBUFSRX];
28 int rx_index;
29 const char *name;
30 phys_addr_t iobase;
31};
32
33
34
35
36static void ftmac100_reset(struct ftmac100_data *priv)
37{
38 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
39
40 debug ("%s()\n", __func__);
41
42 writel (FTMAC100_MACCR_SW_RST, &ftmac100->maccr);
43
44 while (readl (&ftmac100->maccr) & FTMAC100_MACCR_SW_RST)
45 mdelay(1);
46
47
48
49
50 mdelay(1);
51}
52
53
54
55
56static void ftmac100_set_mac(struct ftmac100_data *priv ,
57 const unsigned char *mac)
58{
59 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
60 unsigned int maddr = mac[0] << 8 | mac[1];
61 unsigned int laddr = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
62
63 debug ("%s(%x %x)\n", __func__, maddr, laddr);
64
65 writel (maddr, &ftmac100->mac_madr);
66 writel (laddr, &ftmac100->mac_ladr);
67}
68
69
70
71
72static void _ftmac100_halt(struct ftmac100_data *priv)
73{
74 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
75 debug ("%s()\n", __func__);
76 writel (0, &ftmac100->maccr);
77}
78
79
80
81
82static int _ftmac100_init(struct ftmac100_data *priv, unsigned char enetaddr[6])
83{
84 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
85 struct ftmac100_txdes *txdes = priv->txdes;
86 struct ftmac100_rxdes *rxdes = priv->rxdes;
87 unsigned int maccr;
88 int i;
89 debug ("%s()\n", __func__);
90
91 ftmac100_reset(priv);
92
93
94 ftmac100_set_mac(priv, enetaddr);
95
96
97
98
99 writel (0, &ftmac100->imr);
100
101
102
103 priv->rx_index = 0;
104
105 txdes[0].txdes1 = FTMAC100_TXDES1_EDOTR;
106 rxdes[PKTBUFSRX - 1].rxdes1 = FTMAC100_RXDES1_EDORR;
107
108 for (i = 0; i < PKTBUFSRX; i++) {
109
110 rxdes[i].rxdes2 = (unsigned int)(unsigned long)net_rx_packets[i];
111 rxdes[i].rxdes1 |= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
112 rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
113 }
114
115
116
117 writel ((unsigned long)txdes, &ftmac100->txr_badr);
118
119
120
121 writel ((unsigned long)rxdes, &ftmac100->rxr_badr);
122
123
124
125 writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);
126
127
128
129 maccr = FTMAC100_MACCR_XMT_EN |
130 FTMAC100_MACCR_RCV_EN |
131 FTMAC100_MACCR_XDMA_EN |
132 FTMAC100_MACCR_RDMA_EN |
133 FTMAC100_MACCR_CRC_APD |
134 FTMAC100_MACCR_ENRX_IN_HALFTX |
135 FTMAC100_MACCR_RX_RUNT |
136 FTMAC100_MACCR_RX_BROADPKT;
137
138 writel (maccr, &ftmac100->maccr);
139
140 return 0;
141}
142
143
144
145
146static int _ftmac100_free_pkt(struct ftmac100_data *priv)
147{
148 struct ftmac100_rxdes *curr_des;
149 curr_des = &priv->rxdes[priv->rx_index];
150
151 curr_des->rxdes0 |= FTMAC100_RXDES0_RXDMA_OWN;
152 priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
153 return 0;
154}
155
156
157
158
159static int __ftmac100_recv(struct ftmac100_data *priv)
160{
161 struct ftmac100_rxdes *curr_des;
162 unsigned short rxlen;
163
164 curr_des = &priv->rxdes[priv->rx_index];
165 if (curr_des->rxdes0 & FTMAC100_RXDES0_RXDMA_OWN)
166 return 0;
167
168 if (curr_des->rxdes0 & (FTMAC100_RXDES0_RX_ERR |
169 FTMAC100_RXDES0_CRC_ERR |
170 FTMAC100_RXDES0_FTL |
171 FTMAC100_RXDES0_RUNT |
172 FTMAC100_RXDES0_RX_ODD_NB)) {
173 return 0;
174 }
175
176 rxlen = FTMAC100_RXDES0_RFL (curr_des->rxdes0);
177 invalidate_dcache_range(curr_des->rxdes2,curr_des->rxdes2+rxlen);
178 debug ("%s(): RX buffer %d, %x received\n",
179 __func__, priv->rx_index, rxlen);
180
181 return rxlen;
182}
183
184
185
186
187static int _ftmac100_send(struct ftmac100_data *priv, void *packet, int length)
188{
189 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
190 struct ftmac100_txdes *curr_des = priv->txdes;
191 ulong start;
192
193 if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
194 debug ("%s(): no TX descriptor available\n", __func__);
195 return -1;
196 }
197
198 debug ("%s(%lx, %x)\n", __func__, (unsigned long)packet, length);
199
200 length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
201
202
203
204 flush_dcache_range((unsigned long)packet,(unsigned long)packet+length);
205 curr_des->txdes2 = (unsigned int)(unsigned long)packet;
206
207 curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
208 curr_des->txdes1 |= FTMAC100_TXDES1_FTS |
209 FTMAC100_TXDES1_LTS |
210 FTMAC100_TXDES1_TXBUF_SIZE (length);
211
212 curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;
213
214
215
216 writel (1, &ftmac100->txpd);
217
218
219
220 start = get_timer(0);
221 while (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
222 if (get_timer(start) >= 5) {
223 debug ("%s(): timed out\n", __func__);
224 return -1;
225 }
226 }
227
228 debug ("%s(): packet sent\n", __func__);
229
230 return 0;
231}
232
233#ifndef CONFIG_DM_ETH
234
235
236
237static void ftmac100_halt(struct eth_device *dev)
238{
239 struct ftmac100_data *priv = dev->priv;
240 return _ftmac100_halt(priv);
241}
242
243static int ftmac100_init(struct eth_device *dev, struct bd_info *bd)
244{
245 struct ftmac100_data *priv = dev->priv;
246 return _ftmac100_init(priv , dev->enetaddr);
247}
248
249static int _ftmac100_recv(struct ftmac100_data *priv)
250{
251 struct ftmac100_rxdes *curr_des;
252 unsigned short len;
253 curr_des = &priv->rxdes[priv->rx_index];
254 len = __ftmac100_recv(priv);
255 if (len) {
256
257 net_process_received_packet((void *)curr_des->rxdes2, len);
258 _ftmac100_free_pkt(priv);
259 }
260 return len ? 1 : 0;
261}
262
263
264
265
266static int ftmac100_recv(struct eth_device *dev)
267{
268 struct ftmac100_data *priv = dev->priv;
269 return _ftmac100_recv(priv);
270}
271
272
273
274
275static int ftmac100_send(struct eth_device *dev, void *packet, int length)
276{
277 struct ftmac100_data *priv = dev->priv;
278 return _ftmac100_send(priv , packet , length);
279}
280
281int ftmac100_initialize (struct bd_info *bd)
282{
283 struct eth_device *dev;
284 struct ftmac100_data *priv;
285 dev = malloc (sizeof *dev);
286 if (!dev) {
287 printf ("%s(): failed to allocate dev\n", __func__);
288 goto out;
289 }
290
291 priv = memalign (16, sizeof (struct ftmac100_data));
292 if (!priv) {
293 printf ("%s(): failed to allocate priv\n", __func__);
294 goto free_dev;
295 }
296 memset (dev, 0, sizeof (*dev));
297 memset (priv, 0, sizeof (*priv));
298
299 strcpy(dev->name, "FTMAC100");
300 dev->iobase = CONFIG_FTMAC100_BASE;
301 dev->init = ftmac100_init;
302 dev->halt = ftmac100_halt;
303 dev->send = ftmac100_send;
304 dev->recv = ftmac100_recv;
305 dev->priv = priv;
306 priv->iobase = dev->iobase;
307 eth_register (dev);
308
309 return 1;
310
311free_dev:
312 free (dev);
313out:
314 return 0;
315}
316#endif
317
318#ifdef CONFIG_DM_ETH
319static int ftmac100_start(struct udevice *dev)
320{
321 struct eth_pdata *plat = dev_get_platdata(dev);
322 struct ftmac100_data *priv = dev_get_priv(dev);
323
324 return _ftmac100_init(priv, plat->enetaddr);
325}
326
327static void ftmac100_stop(struct udevice *dev)
328{
329 struct ftmac100_data *priv = dev_get_priv(dev);
330 _ftmac100_halt(priv);
331}
332
333static int ftmac100_send(struct udevice *dev, void *packet, int length)
334{
335 struct ftmac100_data *priv = dev_get_priv(dev);
336 int ret;
337 ret = _ftmac100_send(priv , packet , length);
338 return ret ? 0 : -ETIMEDOUT;
339}
340
341static int ftmac100_recv(struct udevice *dev, int flags, uchar **packetp)
342{
343 struct ftmac100_data *priv = dev_get_priv(dev);
344 struct ftmac100_rxdes *curr_des;
345 curr_des = &priv->rxdes[priv->rx_index];
346 int len;
347 len = __ftmac100_recv(priv);
348 if (len)
349 *packetp = (uchar *)(unsigned long)curr_des->rxdes2;
350
351 return len ? len : -EAGAIN;
352}
353
354static int ftmac100_free_pkt(struct udevice *dev, uchar *packet, int length)
355{
356 struct ftmac100_data *priv = dev_get_priv(dev);
357 _ftmac100_free_pkt(priv);
358 return 0;
359}
360
361int ftmac100_read_rom_hwaddr(struct udevice *dev)
362{
363 struct eth_pdata *pdata = dev_get_platdata(dev);
364 eth_env_get_enetaddr("ethaddr", pdata->enetaddr);
365 return 0;
366}
367
368static const char *dtbmacaddr(u32 ifno)
369{
370 int node, len;
371 char enet[16];
372 const char *mac;
373 const char *path;
374 if (gd->fdt_blob == NULL) {
375 printf("%s: don't have a valid gd->fdt_blob!\n", __func__);
376 return NULL;
377 }
378 node = fdt_path_offset(gd->fdt_blob, "/aliases");
379 if (node < 0)
380 return NULL;
381
382 sprintf(enet, "ethernet%d", ifno);
383 path = fdt_getprop(gd->fdt_blob, node, enet, NULL);
384 if (!path) {
385 printf("no alias for %s\n", enet);
386 return NULL;
387 }
388 node = fdt_path_offset(gd->fdt_blob, path);
389 mac = fdt_getprop(gd->fdt_blob, node, "mac-address", &len);
390 if (mac && is_valid_ethaddr((u8 *)mac))
391 return mac;
392
393 return NULL;
394}
395
396static int ftmac100_ofdata_to_platdata(struct udevice *dev)
397{
398 struct ftmac100_data *priv = dev_get_priv(dev);
399 struct eth_pdata *pdata = dev_get_platdata(dev);
400 const char *mac;
401 pdata->iobase = dev_read_addr(dev);
402 priv->iobase = pdata->iobase;
403 mac = dtbmacaddr(0);
404 if (mac)
405 memcpy(pdata->enetaddr , mac , 6);
406
407 return 0;
408}
409
410static int ftmac100_probe(struct udevice *dev)
411{
412 struct ftmac100_data *priv = dev_get_priv(dev);
413 priv->name = dev->name;
414 return 0;
415}
416
417static int ftmac100_bind(struct udevice *dev)
418{
419 return device_set_name(dev, dev->name);
420}
421
422static const struct eth_ops ftmac100_ops = {
423 .start = ftmac100_start,
424 .send = ftmac100_send,
425 .recv = ftmac100_recv,
426 .stop = ftmac100_stop,
427 .free_pkt = ftmac100_free_pkt,
428};
429
430static const struct udevice_id ftmac100_ids[] = {
431 { .compatible = "andestech,atmac100" },
432 { }
433};
434
435U_BOOT_DRIVER(ftmac100) = {
436 .name = "nds32_mac",
437 .id = UCLASS_ETH,
438 .of_match = ftmac100_ids,
439 .bind = ftmac100_bind,
440 .ofdata_to_platdata = ftmac100_ofdata_to_platdata,
441 .probe = ftmac100_probe,
442 .ops = &ftmac100_ops,
443 .priv_auto_alloc_size = sizeof(struct ftmac100_data),
444 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
445 .flags = DM_FLAG_ALLOC_PRIV_DMA,
446};
447#endif
448
