1 // SPDX-License-Identifier: GPL-2.0+
3 * Faraday FTMAC100 Ethernet
5 * (C) Copyright 2009 Faraday Technology
6 * Po-Yu Chuang <ratbert@faraday-tech.com>
19 DECLARE_GLOBAL_DATA_PTR;
23 struct ftmac100_data {
24 struct ftmac100_txdes txdes[1];
25 struct ftmac100_rxdes rxdes[PKTBUFSRX];
34 static void ftmac100_reset(struct ftmac100_data *priv)
36 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
38 debug ("%s()\n", __func__);
40 writel (FTMAC100_MACCR_SW_RST, &ftmac100->maccr);
42 while (readl (&ftmac100->maccr) & FTMAC100_MACCR_SW_RST)
45 * When soft reset complete, write mac address immediately maybe fail somehow
46 * Wait for a while can avoid this problem
54 static void ftmac100_set_mac(struct ftmac100_data *priv ,
55 const unsigned char *mac)
57 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
58 unsigned int maddr = mac[0] << 8 | mac[1];
59 unsigned int laddr = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
61 debug ("%s(%x %x)\n", __func__, maddr, laddr);
63 writel (maddr, &ftmac100->mac_madr);
64 writel (laddr, &ftmac100->mac_ladr);
70 static void _ftmac100_halt(struct ftmac100_data *priv)
72 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
73 debug ("%s()\n", __func__);
74 writel (0, &ftmac100->maccr);
80 static int _ftmac100_init(struct ftmac100_data *priv, unsigned char enetaddr[6])
82 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
83 struct ftmac100_txdes *txdes = priv->txdes;
84 struct ftmac100_rxdes *rxdes = priv->rxdes;
87 debug ("%s()\n", __func__);
91 /* set the ethernet address */
92 ftmac100_set_mac(priv, enetaddr);
95 /* disable all interrupts */
97 writel (0, &ftmac100->imr);
99 /* initialize descriptors */
103 txdes[0].txdes1 = FTMAC100_TXDES1_EDOTR;
104 rxdes[PKTBUFSRX - 1].rxdes1 = FTMAC100_RXDES1_EDORR;
106 for (i = 0; i < PKTBUFSRX; i++) {
108 rxdes[i].rxdes2 = (unsigned int)(unsigned long)net_rx_packets[i];
109 rxdes[i].rxdes1 |= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
110 rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
115 writel ((unsigned long)txdes, &ftmac100->txr_badr);
119 writel ((unsigned long)rxdes, &ftmac100->rxr_badr);
121 /* poll receive descriptor automatically */
123 writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);
125 /* enable transmitter, receiver */
127 maccr = FTMAC100_MACCR_XMT_EN |
128 FTMAC100_MACCR_RCV_EN |
129 FTMAC100_MACCR_XDMA_EN |
130 FTMAC100_MACCR_RDMA_EN |
131 FTMAC100_MACCR_CRC_APD |
132 FTMAC100_MACCR_ENRX_IN_HALFTX |
133 FTMAC100_MACCR_RX_RUNT |
134 FTMAC100_MACCR_RX_BROADPKT;
136 writel (maccr, &ftmac100->maccr);
142 * Free receiving buffer
144 static int _ftmac100_free_pkt(struct ftmac100_data *priv)
146 struct ftmac100_rxdes *curr_des;
147 curr_des = &priv->rxdes[priv->rx_index];
148 /* release buffer to DMA */
149 curr_des->rxdes0 |= FTMAC100_RXDES0_RXDMA_OWN;
150 priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
155 * Receive a data block via Ethernet
157 static int __ftmac100_recv(struct ftmac100_data *priv)
159 struct ftmac100_rxdes *curr_des;
160 unsigned short rxlen;
162 curr_des = &priv->rxdes[priv->rx_index];
163 if (curr_des->rxdes0 & FTMAC100_RXDES0_RXDMA_OWN)
166 if (curr_des->rxdes0 & (FTMAC100_RXDES0_RX_ERR |
167 FTMAC100_RXDES0_CRC_ERR |
168 FTMAC100_RXDES0_FTL |
169 FTMAC100_RXDES0_RUNT |
170 FTMAC100_RXDES0_RX_ODD_NB)) {
174 rxlen = FTMAC100_RXDES0_RFL (curr_des->rxdes0);
175 invalidate_dcache_range(curr_des->rxdes2,curr_des->rxdes2+rxlen);
176 debug ("%s(): RX buffer %d, %x received\n",
177 __func__, priv->rx_index, rxlen);
183 * Send a data block via Ethernet
185 static int _ftmac100_send(struct ftmac100_data *priv, void *packet, int length)
187 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
188 struct ftmac100_txdes *curr_des = priv->txdes;
191 if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
192 debug ("%s(): no TX descriptor available\n", __func__);
196 debug ("%s(%lx, %x)\n", __func__, (unsigned long)packet, length);
198 length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
200 /* initiate a transmit sequence */
202 flush_dcache_range((unsigned long)packet,(unsigned long)packet+length);
203 curr_des->txdes2 = (unsigned int)(unsigned long)packet; /* TXBUF_BADR */
205 curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
206 curr_des->txdes1 |= FTMAC100_TXDES1_FTS |
207 FTMAC100_TXDES1_LTS |
208 FTMAC100_TXDES1_TXBUF_SIZE (length);
210 curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;
214 writel (1, &ftmac100->txpd);
216 /* wait for transfer to succeed */
218 start = get_timer(0);
219 while (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
220 if (get_timer(start) >= 5) {
221 debug ("%s(): timed out\n", __func__);
226 debug ("%s(): packet sent\n", __func__);
231 #ifndef CONFIG_DM_ETH
233 * disable transmitter, receiver
235 static void ftmac100_halt(struct eth_device *dev)
237 struct ftmac100_data *priv = dev->priv;
238 return _ftmac100_halt(priv);
241 static int ftmac100_init(struct eth_device *dev, bd_t *bd)
243 struct ftmac100_data *priv = dev->priv;
244 return _ftmac100_init(priv , dev->enetaddr);
247 static int _ftmac100_recv(struct ftmac100_data *priv)
249 struct ftmac100_rxdes *curr_des;
251 curr_des = &priv->rxdes[priv->rx_index];
252 len = __ftmac100_recv(priv);
254 /* pass the packet up to the protocol layers. */
255 net_process_received_packet((void *)curr_des->rxdes2, len);
256 _ftmac100_free_pkt(priv);
262 * Get a data block via Ethernet
264 static int ftmac100_recv(struct eth_device *dev)
266 struct ftmac100_data *priv = dev->priv;
267 return _ftmac100_recv(priv);
271 * Send a data block via Ethernet
273 static int ftmac100_send(struct eth_device *dev, void *packet, int length)
275 struct ftmac100_data *priv = dev->priv;
276 return _ftmac100_send(priv , packet , length);
279 int ftmac100_initialize (bd_t *bd)
281 struct eth_device *dev;
282 struct ftmac100_data *priv;
283 dev = malloc (sizeof *dev);
285 printf ("%s(): failed to allocate dev\n", __func__);
288 /* Transmit and receive descriptors should align to 16 bytes */
289 priv = memalign (16, sizeof (struct ftmac100_data));
291 printf ("%s(): failed to allocate priv\n", __func__);
294 memset (dev, 0, sizeof (*dev));
295 memset (priv, 0, sizeof (*priv));
297 strcpy(dev->name, "FTMAC100");
298 dev->iobase = CONFIG_FTMAC100_BASE;
299 dev->init = ftmac100_init;
300 dev->halt = ftmac100_halt;
301 dev->send = ftmac100_send;
302 dev->recv = ftmac100_recv;
304 priv->iobase = dev->iobase;
317 static int ftmac100_start(struct udevice *dev)
319 struct eth_pdata *plat = dev_get_platdata(dev);
320 struct ftmac100_data *priv = dev_get_priv(dev);
322 return _ftmac100_init(priv, plat->enetaddr);
325 static void ftmac100_stop(struct udevice *dev)
327 struct ftmac100_data *priv = dev_get_priv(dev);
328 _ftmac100_halt(priv);
331 static int ftmac100_send(struct udevice *dev, void *packet, int length)
333 struct ftmac100_data *priv = dev_get_priv(dev);
335 ret = _ftmac100_send(priv , packet , length);
336 return ret ? 0 : -ETIMEDOUT;
339 static int ftmac100_recv(struct udevice *dev, int flags, uchar **packetp)
341 struct ftmac100_data *priv = dev_get_priv(dev);
342 struct ftmac100_rxdes *curr_des;
343 curr_des = &priv->rxdes[priv->rx_index];
345 len = __ftmac100_recv(priv);
347 *packetp = (uchar *)(unsigned long)curr_des->rxdes2;
349 return len ? len : -EAGAIN;
352 static int ftmac100_free_pkt(struct udevice *dev, uchar *packet, int length)
354 struct ftmac100_data *priv = dev_get_priv(dev);
355 _ftmac100_free_pkt(priv);
359 int ftmac100_read_rom_hwaddr(struct udevice *dev)
361 struct eth_pdata *pdata = dev_get_platdata(dev);
362 eth_env_get_enetaddr("ethaddr", pdata->enetaddr);
366 static const char *dtbmacaddr(u32 ifno)
372 if (gd->fdt_blob == NULL) {
373 printf("%s: don't have a valid gd->fdt_blob!\n", __func__);
376 node = fdt_path_offset(gd->fdt_blob, "/aliases");
380 sprintf(enet, "ethernet%d", ifno);
381 path = fdt_getprop(gd->fdt_blob, node, enet, NULL);
383 printf("no alias for %s\n", enet);
386 node = fdt_path_offset(gd->fdt_blob, path);
387 mac = fdt_getprop(gd->fdt_blob, node, "mac-address", &len);
388 if (mac && is_valid_ethaddr((u8 *)mac))
394 static int ftmac100_ofdata_to_platdata(struct udevice *dev)
396 struct ftmac100_data *priv = dev_get_priv(dev);
397 struct eth_pdata *pdata = dev_get_platdata(dev);
399 pdata->iobase = devfdt_get_addr(dev);
400 priv->iobase = pdata->iobase;
403 memcpy(pdata->enetaddr , mac , 6);
408 static int ftmac100_probe(struct udevice *dev)
410 struct ftmac100_data *priv = dev_get_priv(dev);
411 priv->name = dev->name;
415 static int ftmac100_bind(struct udevice *dev)
417 return device_set_name(dev, dev->name);
420 static const struct eth_ops ftmac100_ops = {
421 .start = ftmac100_start,
422 .send = ftmac100_send,
423 .recv = ftmac100_recv,
424 .stop = ftmac100_stop,
425 .free_pkt = ftmac100_free_pkt,
428 static const struct udevice_id ftmac100_ids[] = {
429 { .compatible = "andestech,atmac100" },
433 U_BOOT_DRIVER(ftmac100) = {
436 .of_match = ftmac100_ids,
437 .bind = ftmac100_bind,
438 .ofdata_to_platdata = ftmac100_ofdata_to_platdata,
439 .probe = ftmac100_probe,
440 .ops = &ftmac100_ops,
441 .priv_auto_alloc_size = sizeof(struct ftmac100_data),
442 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
443 .flags = DM_FLAG_ALLOC_PRIV_DMA,