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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 <asm/global_data.h>
16#include <linux/delay.h>
17#include <linux/io.h>
18
19#include "ftmac100.h"
20#ifdef CONFIG_DM_ETH
21#include <dm.h>
22DECLARE_GLOBAL_DATA_PTR;
23#endif
24#define ETH_ZLEN 60
25
26struct ftmac100_data {
27 struct ftmac100_txdes txdes[1];
28 struct ftmac100_rxdes rxdes[PKTBUFSRX];
29 int rx_index;
30 const char *name;
31 phys_addr_t iobase;
32};
33
34
35
36
37static void ftmac100_reset(struct ftmac100_data *priv)
38{
39 struct ftmac100 *ftmac100 = (struct ftmac100 *)(uintptr_t)priv->iobase;
40
41 debug ("%s()\n", __func__);
42
43 writel (FTMAC100_MACCR_SW_RST, &ftmac100->maccr);
44
45 while (readl (&ftmac100->maccr) & FTMAC100_MACCR_SW_RST)
46 mdelay(1);
47
48
49
50
51 mdelay(1);
52}
53
54
55
56
57static void ftmac100_set_mac(struct ftmac100_data *priv ,
58 const unsigned char *mac)
59{
60 struct ftmac100 *ftmac100 = (struct ftmac100 *)(uintptr_t)priv->iobase;
61 unsigned int maddr = mac[0] << 8 | mac[1];
62 unsigned int laddr = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
63
64 debug ("%s(%x %x)\n", __func__, maddr, laddr);
65
66 writel (maddr, &ftmac100->mac_madr);
67 writel (laddr, &ftmac100->mac_ladr);
68}
69
70
71
72
73static void _ftmac100_halt(struct ftmac100_data *priv)
74{
75 struct ftmac100 *ftmac100 = (struct ftmac100 *)(uintptr_t)priv->iobase;
76 debug ("%s()\n", __func__);
77 writel (0, &ftmac100->maccr);
78}
79
80
81
82
83static int _ftmac100_init(struct ftmac100_data *priv, unsigned char enetaddr[6])
84{
85 struct ftmac100 *ftmac100 = (struct ftmac100 *)(uintptr_t)priv->iobase;
86 struct ftmac100_txdes *txdes = priv->txdes;
87 struct ftmac100_rxdes *rxdes = priv->rxdes;
88 unsigned int maccr;
89 int i;
90 debug ("%s()\n", __func__);
91
92 ftmac100_reset(priv);
93
94
95 ftmac100_set_mac(priv, enetaddr);
96
97
98
99
100 writel (0, &ftmac100->imr);
101
102
103
104 priv->rx_index = 0;
105
106 txdes[0].txdes1 = FTMAC100_TXDES1_EDOTR;
107 rxdes[PKTBUFSRX - 1].rxdes1 = FTMAC100_RXDES1_EDORR;
108
109 for (i = 0; i < PKTBUFSRX; i++) {
110
111 rxdes[i].rxdes2 = (unsigned int)(unsigned long)net_rx_packets[i];
112 rxdes[i].rxdes1 |= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
113 rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
114 }
115
116
117
118 writel ((unsigned long)txdes, &ftmac100->txr_badr);
119
120
121
122 writel ((unsigned long)rxdes, &ftmac100->rxr_badr);
123
124
125
126 writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);
127
128
129
130 maccr = FTMAC100_MACCR_XMT_EN |
131 FTMAC100_MACCR_RCV_EN |
132 FTMAC100_MACCR_XDMA_EN |
133 FTMAC100_MACCR_RDMA_EN |
134 FTMAC100_MACCR_CRC_APD |
135 FTMAC100_MACCR_ENRX_IN_HALFTX |
136 FTMAC100_MACCR_RX_RUNT |
137 FTMAC100_MACCR_RX_BROADPKT;
138
139 writel (maccr, &ftmac100->maccr);
140
141 return 0;
142}
143
144
145
146
147static int _ftmac100_free_pkt(struct ftmac100_data *priv)
148{
149 struct ftmac100_rxdes *curr_des;
150 curr_des = &priv->rxdes[priv->rx_index];
151
152 curr_des->rxdes0 |= FTMAC100_RXDES0_RXDMA_OWN;
153 priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
154 return 0;
155}
156
157
158
159
160static int __ftmac100_recv(struct ftmac100_data *priv)
161{
162 struct ftmac100_rxdes *curr_des;
163 unsigned short rxlen;
164
165 curr_des = &priv->rxdes[priv->rx_index];
166 if (curr_des->rxdes0 & FTMAC100_RXDES0_RXDMA_OWN)
167 return 0;
168
169 if (curr_des->rxdes0 & (FTMAC100_RXDES0_RX_ERR |
170 FTMAC100_RXDES0_CRC_ERR |
171 FTMAC100_RXDES0_FTL |
172 FTMAC100_RXDES0_RUNT |
173 FTMAC100_RXDES0_RX_ODD_NB)) {
174 return 0;
175 }
176
177 rxlen = FTMAC100_RXDES0_RFL (curr_des->rxdes0);
178 invalidate_dcache_range(curr_des->rxdes2,curr_des->rxdes2+rxlen);
179 debug ("%s(): RX buffer %d, %x received\n",
180 __func__, priv->rx_index, rxlen);
181
182 return rxlen;
183}
184
185
186
187
188static int _ftmac100_send(struct ftmac100_data *priv, void *packet, int length)
189{
190 struct ftmac100 *ftmac100 = (struct ftmac100 *)(uintptr_t)priv->iobase;
191 struct ftmac100_txdes *curr_des = priv->txdes;
192 ulong start;
193
194 if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
195 debug ("%s(): no TX descriptor available\n", __func__);
196 return -1;
197 }
198
199 debug ("%s(%lx, %x)\n", __func__, (unsigned long)packet, length);
200
201 length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
202
203
204
205 flush_dcache_range((unsigned long)packet,(unsigned long)packet+length);
206 curr_des->txdes2 = (unsigned int)(unsigned long)packet;
207
208 curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
209 curr_des->txdes1 |= FTMAC100_TXDES1_FTS |
210 FTMAC100_TXDES1_LTS |
211 FTMAC100_TXDES1_TXBUF_SIZE (length);
212
213 curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;
214
215
216
217 writel (1, &ftmac100->txpd);
218
219
220
221 start = get_timer(0);
222 while (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
223 if (get_timer(start) >= 5) {
224 debug ("%s(): timed out\n", __func__);
225 return -1;
226 }
227 }
228
229 debug ("%s(): packet sent\n", __func__);
230
231 return 0;
232}
233
234#ifndef CONFIG_DM_ETH
235
236
237
238static void ftmac100_halt(struct eth_device *dev)
239{
240 struct ftmac100_data *priv = dev->priv;
241 return _ftmac100_halt(priv);
242}
243
244static int ftmac100_init(struct eth_device *dev, struct bd_info *bd)
245{
246 struct ftmac100_data *priv = dev->priv;
247 return _ftmac100_init(priv , dev->enetaddr);
248}
249
250static int _ftmac100_recv(struct ftmac100_data *priv)
251{
252 struct ftmac100_rxdes *curr_des;
253 unsigned short len;
254 curr_des = &priv->rxdes[priv->rx_index];
255 len = __ftmac100_recv(priv);
256 if (len) {
257
258 net_process_received_packet((void *)curr_des->rxdes2, len);
259 _ftmac100_free_pkt(priv);
260 }
261 return len ? 1 : 0;
262}
263
264
265
266
267static int ftmac100_recv(struct eth_device *dev)
268{
269 struct ftmac100_data *priv = dev->priv;
270 return _ftmac100_recv(priv);
271}
272
273
274
275
276static int ftmac100_send(struct eth_device *dev, void *packet, int length)
277{
278 struct ftmac100_data *priv = dev->priv;
279 return _ftmac100_send(priv , packet , length);
280}
281
282int ftmac100_initialize (struct bd_info *bd)
283{
284 struct eth_device *dev;
285 struct ftmac100_data *priv;
286 dev = malloc (sizeof *dev);
287 if (!dev) {
288 printf ("%s(): failed to allocate dev\n", __func__);
289 goto out;
290 }
291
292 priv = memalign (16, sizeof (struct ftmac100_data));
293 if (!priv) {
294 printf ("%s(): failed to allocate priv\n", __func__);
295 goto free_dev;
296 }
297 memset (dev, 0, sizeof (*dev));
298 memset (priv, 0, sizeof (*priv));
299
300 strcpy(dev->name, "FTMAC100");
301 dev->iobase = CONFIG_FTMAC100_BASE;
302 dev->init = ftmac100_init;
303 dev->halt = ftmac100_halt;
304 dev->send = ftmac100_send;
305 dev->recv = ftmac100_recv;
306 dev->priv = priv;
307 priv->iobase = dev->iobase;
308 eth_register (dev);
309
310 return 1;
311
312free_dev:
313 free (dev);
314out:
315 return 0;
316}
317#endif
318
319#ifdef CONFIG_DM_ETH
320static int ftmac100_start(struct udevice *dev)
321{
322 struct eth_pdata *plat = dev_get_plat(dev);
323 struct ftmac100_data *priv = dev_get_priv(dev);
324
325 return _ftmac100_init(priv, plat->enetaddr);
326}
327
328static void ftmac100_stop(struct udevice *dev)
329{
330 struct ftmac100_data *priv = dev_get_priv(dev);
331 _ftmac100_halt(priv);
332}
333
334static int ftmac100_send(struct udevice *dev, void *packet, int length)
335{
336 struct ftmac100_data *priv = dev_get_priv(dev);
337 int ret;
338 ret = _ftmac100_send(priv , packet , length);
339 return ret ? 0 : -ETIMEDOUT;
340}
341
342static int ftmac100_recv(struct udevice *dev, int flags, uchar **packetp)
343{
344 struct ftmac100_data *priv = dev_get_priv(dev);
345 struct ftmac100_rxdes *curr_des;
346 curr_des = &priv->rxdes[priv->rx_index];
347 int len;
348 len = __ftmac100_recv(priv);
349 if (len)
350 *packetp = (uchar *)(unsigned long)curr_des->rxdes2;
351
352 return len ? len : -EAGAIN;
353}
354
355static int ftmac100_free_pkt(struct udevice *dev, uchar *packet, int length)
356{
357 struct ftmac100_data *priv = dev_get_priv(dev);
358 _ftmac100_free_pkt(priv);
359 return 0;
360}
361
362int ftmac100_read_rom_hwaddr(struct udevice *dev)
363{
364 struct eth_pdata *pdata = dev_get_plat(dev);
365 eth_env_get_enetaddr("ethaddr", pdata->enetaddr);
366 return 0;
367}
368
369static const char *dtbmacaddr(u32 ifno)
370{
371 int node, len;
372 char enet[16];
373 const char *mac;
374 const char *path;
375 if (gd->fdt_blob == NULL) {
376 printf("%s: don't have a valid gd->fdt_blob!\n", __func__);
377 return NULL;
378 }
379 node = fdt_path_offset(gd->fdt_blob, "/aliases");
380 if (node < 0)
381 return NULL;
382
383 sprintf(enet, "ethernet%d", ifno);
384 path = fdt_getprop(gd->fdt_blob, node, enet, NULL);
385 if (!path) {
386 printf("no alias for %s\n", enet);
387 return NULL;
388 }
389 node = fdt_path_offset(gd->fdt_blob, path);
390 mac = fdt_getprop(gd->fdt_blob, node, "mac-address", &len);
391 if (mac && is_valid_ethaddr((u8 *)mac))
392 return mac;
393
394 return NULL;
395}
396
397static int ftmac100_of_to_plat(struct udevice *dev)
398{
399 struct ftmac100_data *priv = dev_get_priv(dev);
400 struct eth_pdata *pdata = dev_get_plat(dev);
401 const char *mac;
402 pdata->iobase = dev_read_addr(dev);
403 priv->iobase = pdata->iobase;
404 mac = dtbmacaddr(0);
405 if (mac)
406 memcpy(pdata->enetaddr , mac , 6);
407
408 return 0;
409}
410
411static int ftmac100_probe(struct udevice *dev)
412{
413 struct ftmac100_data *priv = dev_get_priv(dev);
414 priv->name = dev->name;
415 return 0;
416}
417
418static int ftmac100_bind(struct udevice *dev)
419{
420 return device_set_name(dev, dev->name);
421}
422
423static const struct eth_ops ftmac100_ops = {
424 .start = ftmac100_start,
425 .send = ftmac100_send,
426 .recv = ftmac100_recv,
427 .stop = ftmac100_stop,
428 .free_pkt = ftmac100_free_pkt,
429};
430
431static const struct udevice_id ftmac100_ids[] = {
432 { .compatible = "andestech,atmac100" },
433 { }
434};
435
436U_BOOT_DRIVER(ftmac100) = {
437 .name = "nds32_mac",
438 .id = UCLASS_ETH,
439 .of_match = ftmac100_ids,
440 .bind = ftmac100_bind,
441 .of_to_plat = ftmac100_of_to_plat,
442 .probe = ftmac100_probe,
443 .ops = &ftmac100_ops,
444 .priv_auto = sizeof(struct ftmac100_data),
445 .plat_auto = sizeof(struct eth_pdata),
446 .flags = DM_FLAG_ALLOC_PRIV_DMA,
447};
448#endif
449
