2 * Faraday FTMAC100 Ethernet
4 * (C) Copyright 2009 Faraday Technology
5 * Po-Yu Chuang <ratbert@faraday-tech.com>
7 * SPDX-License-Identifier: GPL-2.0+
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)
49 static void ftmac100_set_mac(struct ftmac100_data *priv ,
50 const unsigned char *mac)
52 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
53 unsigned int maddr = mac[0] << 8 | mac[1];
54 unsigned int laddr = mac[2] << 24 | mac[3] << 16 | mac[4] << 8 | mac[5];
56 debug ("%s(%x %x)\n", __func__, maddr, laddr);
58 writel (maddr, &ftmac100->mac_madr);
59 writel (laddr, &ftmac100->mac_ladr);
65 static void _ftmac100_halt(struct ftmac100_data *priv)
67 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
68 debug ("%s()\n", __func__);
69 writel (0, &ftmac100->maccr);
75 static int _ftmac100_init(struct ftmac100_data *priv, unsigned char enetaddr[6])
77 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
78 struct ftmac100_txdes *txdes = priv->txdes;
79 struct ftmac100_rxdes *rxdes = priv->rxdes;
82 debug ("%s()\n", __func__);
86 /* set the ethernet address */
87 ftmac100_set_mac(priv, enetaddr);
90 /* disable all interrupts */
92 writel (0, &ftmac100->imr);
94 /* initialize descriptors */
98 txdes[0].txdes1 = FTMAC100_TXDES1_EDOTR;
99 rxdes[PKTBUFSRX - 1].rxdes1 = FTMAC100_RXDES1_EDORR;
101 for (i = 0; i < PKTBUFSRX; i++) {
103 rxdes[i].rxdes2 = (unsigned int)net_rx_packets[i];
104 rxdes[i].rxdes1 |= FTMAC100_RXDES1_RXBUF_SIZE (PKTSIZE_ALIGN);
105 rxdes[i].rxdes0 = FTMAC100_RXDES0_RXDMA_OWN;
110 writel ((unsigned int)txdes, &ftmac100->txr_badr);
114 writel ((unsigned int)rxdes, &ftmac100->rxr_badr);
116 /* poll receive descriptor automatically */
118 writel (FTMAC100_APTC_RXPOLL_CNT (1), &ftmac100->aptc);
120 /* enable transmitter, receiver */
122 maccr = FTMAC100_MACCR_XMT_EN |
123 FTMAC100_MACCR_RCV_EN |
124 FTMAC100_MACCR_XDMA_EN |
125 FTMAC100_MACCR_RDMA_EN |
126 FTMAC100_MACCR_CRC_APD |
127 FTMAC100_MACCR_ENRX_IN_HALFTX |
128 FTMAC100_MACCR_RX_RUNT |
129 FTMAC100_MACCR_RX_BROADPKT;
131 writel (maccr, &ftmac100->maccr);
137 * Free receiving buffer
139 static int _ftmac100_free_pkt(struct ftmac100_data *priv)
141 struct ftmac100_rxdes *curr_des;
142 curr_des = &priv->rxdes[priv->rx_index];
143 /* release buffer to DMA */
144 curr_des->rxdes0 |= FTMAC100_RXDES0_RXDMA_OWN;
145 priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
150 * Receive a data block via Ethernet
152 static int __ftmac100_recv(struct ftmac100_data *priv)
154 struct ftmac100_rxdes *curr_des;
155 unsigned short rxlen;
157 curr_des = &priv->rxdes[priv->rx_index];
158 if (curr_des->rxdes0 & FTMAC100_RXDES0_RXDMA_OWN)
161 if (curr_des->rxdes0 & (FTMAC100_RXDES0_RX_ERR |
162 FTMAC100_RXDES0_CRC_ERR |
163 FTMAC100_RXDES0_FTL |
164 FTMAC100_RXDES0_RUNT |
165 FTMAC100_RXDES0_RX_ODD_NB)) {
169 rxlen = FTMAC100_RXDES0_RFL (curr_des->rxdes0);
170 invalidate_dcache_range(curr_des->rxdes2,curr_des->rxdes2+rxlen);
171 debug ("%s(): RX buffer %d, %x received\n",
172 __func__, priv->rx_index, rxlen);
178 * Send a data block via Ethernet
180 static int _ftmac100_send(struct ftmac100_data *priv, void *packet, int length)
182 struct ftmac100 *ftmac100 = (struct ftmac100 *)priv->iobase;
183 struct ftmac100_txdes *curr_des = priv->txdes;
186 if (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
187 debug ("%s(): no TX descriptor available\n", __func__);
191 debug ("%s(%x, %x)\n", __func__, (int)packet, length);
193 length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
195 /* initiate a transmit sequence */
197 flush_dcache_range((u32)packet,(u32)packet+length);
198 curr_des->txdes2 = (unsigned int)packet; /* TXBUF_BADR */
200 curr_des->txdes1 &= FTMAC100_TXDES1_EDOTR;
201 curr_des->txdes1 |= FTMAC100_TXDES1_FTS |
202 FTMAC100_TXDES1_LTS |
203 FTMAC100_TXDES1_TXBUF_SIZE (length);
205 curr_des->txdes0 = FTMAC100_TXDES0_TXDMA_OWN;
209 writel (1, &ftmac100->txpd);
211 /* wait for transfer to succeed */
213 start = get_timer(0);
214 while (curr_des->txdes0 & FTMAC100_TXDES0_TXDMA_OWN) {
215 if (get_timer(start) >= 5) {
216 debug ("%s(): timed out\n", __func__);
221 debug ("%s(): packet sent\n", __func__);
226 #ifndef CONFIG_DM_ETH
228 * disable transmitter, receiver
230 static void ftmac100_halt(struct eth_device *dev)
232 struct ftmac100_data *priv = dev->priv;
233 return _ftmac100_halt(priv);
236 static int ftmac100_init(struct eth_device *dev, bd_t *bd)
238 struct ftmac100_data *priv = dev->priv;
239 return _ftmac100_init(priv , dev->enetaddr);
242 static int _ftmac100_recv(struct ftmac100_data *priv)
244 struct ftmac100_rxdes *curr_des;
246 curr_des = &priv->rxdes[priv->rx_index];
247 len = __ftmac100_recv(priv);
249 /* pass the packet up to the protocol layers. */
250 net_process_received_packet((void *)curr_des->rxdes2, len);
251 _ftmac100_free_pkt(priv);
257 * Get a data block via Ethernet
259 static int ftmac100_recv(struct eth_device *dev)
261 struct ftmac100_data *priv = dev->priv;
262 return _ftmac100_recv(priv);
266 * Send a data block via Ethernet
268 static int ftmac100_send(struct eth_device *dev, void *packet, int length)
270 struct ftmac100_data *priv = dev->priv;
271 return _ftmac100_send(priv , packet , length);
274 int ftmac100_initialize (bd_t *bd)
276 struct eth_device *dev;
277 struct ftmac100_data *priv;
278 dev = malloc (sizeof *dev);
280 printf ("%s(): failed to allocate dev\n", __func__);
283 /* Transmit and receive descriptors should align to 16 bytes */
284 priv = memalign (16, sizeof (struct ftmac100_data));
286 printf ("%s(): failed to allocate priv\n", __func__);
289 memset (dev, 0, sizeof (*dev));
290 memset (priv, 0, sizeof (*priv));
292 strcpy(dev->name, "FTMAC100");
293 dev->iobase = CONFIG_FTMAC100_BASE;
294 dev->init = ftmac100_init;
295 dev->halt = ftmac100_halt;
296 dev->send = ftmac100_send;
297 dev->recv = ftmac100_recv;
299 priv->iobase = dev->iobase;
312 static int ftmac100_start(struct udevice *dev)
314 struct eth_pdata *plat = dev_get_platdata(dev);
315 struct ftmac100_data *priv = dev_get_priv(dev);
317 return _ftmac100_init(priv, plat->enetaddr);
320 static void ftmac100_stop(struct udevice *dev)
322 struct ftmac100_data *priv = dev_get_priv(dev);
323 _ftmac100_halt(priv);
326 static int ftmac100_send(struct udevice *dev, void *packet, int length)
328 struct ftmac100_data *priv = dev_get_priv(dev);
330 ret = _ftmac100_send(priv , packet , length);
331 return ret ? 0 : -ETIMEDOUT;
334 static int ftmac100_recv(struct udevice *dev, int flags, uchar **packetp)
336 struct ftmac100_data *priv = dev_get_priv(dev);
337 struct ftmac100_rxdes *curr_des;
338 curr_des = &priv->rxdes[priv->rx_index];
340 len = __ftmac100_recv(priv);
342 *packetp = (void *)curr_des->rxdes2;
344 return len ? len : -EAGAIN;
347 static int ftmac100_free_pkt(struct udevice *dev, uchar *packet, int length)
349 struct ftmac100_data *priv = dev_get_priv(dev);
350 _ftmac100_free_pkt(priv);
354 int ftmac100_read_rom_hwaddr(struct udevice *dev)
356 struct eth_pdata *pdata = dev_get_platdata(dev);
357 eth_env_get_enetaddr("ethaddr", pdata->enetaddr);
361 static const char *dtbmacaddr(u32 ifno)
367 if (gd->fdt_blob == NULL) {
368 printf("%s: don't have a valid gd->fdt_blob!\n", __func__);
371 node = fdt_path_offset(gd->fdt_blob, "/aliases");
375 sprintf(enet, "ethernet%d", ifno);
376 path = fdt_getprop(gd->fdt_blob, node, enet, NULL);
378 printf("no alias for %s\n", enet);
381 node = fdt_path_offset(gd->fdt_blob, path);
382 mac = fdt_getprop(gd->fdt_blob, node, "mac-address", &len);
383 if (mac && is_valid_ethaddr((u8 *)mac))
389 static int ftmac100_ofdata_to_platdata(struct udevice *dev)
391 struct ftmac100_data *priv = dev_get_priv(dev);
392 struct eth_pdata *pdata = dev_get_platdata(dev);
394 pdata->iobase = devfdt_get_addr(dev);
395 priv->iobase = pdata->iobase;
398 memcpy(pdata->enetaddr , mac , 6);
403 static int ftmac100_probe(struct udevice *dev)
405 struct ftmac100_data *priv = dev_get_priv(dev);
406 priv->name = dev->name;
410 static int ftmac100_bind(struct udevice *dev)
412 return device_set_name(dev, dev->name);
415 static const struct eth_ops ftmac100_ops = {
416 .start = ftmac100_start,
417 .send = ftmac100_send,
418 .recv = ftmac100_recv,
419 .stop = ftmac100_stop,
420 .free_pkt = ftmac100_free_pkt,
423 static const struct udevice_id ftmac100_ids[] = {
424 { .compatible = "andestech,atmac100" },
428 U_BOOT_DRIVER(ftmac100) = {
431 .of_match = ftmac100_ids,
432 .bind = ftmac100_bind,
433 .ofdata_to_platdata = ftmac100_ofdata_to_platdata,
434 .probe = ftmac100_probe,
435 .ops = &ftmac100_ops,
436 .priv_auto_alloc_size = sizeof(struct ftmac100_data),
437 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
438 .flags = DM_FLAG_ALLOC_PRIV_DMA,