2 * sh_eth.c - Driver for Renesas SH7763's ethernet controler.
4 * Copyright (C) 2008, 2011 Renesas Solutions Corp.
5 * Copyright (c) 2008, 2011 Nobuhiro Iwamatsu
6 * Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #include <asm/errno.h>
34 #ifndef CONFIG_SH_ETHER_USE_PORT
35 # error "Please define CONFIG_SH_ETHER_USE_PORT"
37 #ifndef CONFIG_SH_ETHER_PHY_ADDR
38 # error "Please define CONFIG_SH_ETHER_PHY_ADDR"
40 #ifdef CONFIG_SH_ETHER_CACHE_WRITEBACK
41 #define flush_cache_wback(addr, len) \
42 dcache_wback_range((u32)addr, (u32)(addr + len - 1))
44 #define flush_cache_wback(...)
47 #define TIMEOUT_CNT 1000
49 int sh_eth_send(struct eth_device *dev, volatile void *packet, int len)
51 struct sh_eth_dev *eth = dev->priv;
52 int port = eth->port, ret = 0, timeout;
53 struct sh_eth_info *port_info = ð->port_info[port];
55 if (!packet || len > 0xffff) {
56 printf(SHETHER_NAME ": %s: Invalid argument\n", __func__);
61 /* packet must be a 4 byte boundary */
62 if ((int)packet & (4 - 1)) {
63 printf(SHETHER_NAME ": %s: packet not 4 byte alligned\n", __func__);
68 /* Update tx descriptor */
69 flush_cache_wback(packet, len);
70 port_info->tx_desc_cur->td2 = ADDR_TO_PHY(packet);
71 port_info->tx_desc_cur->td1 = len << 16;
72 /* Must preserve the end of descriptor list indication */
73 if (port_info->tx_desc_cur->td0 & TD_TDLE)
74 port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP | TD_TDLE;
76 port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP;
78 /* Restart the transmitter if disabled */
79 if (!(inl(EDTRR(port)) & EDTRR_TRNS))
80 outl(EDTRR_TRNS, EDTRR(port));
82 /* Wait until packet is transmitted */
83 timeout = TIMEOUT_CNT;
84 while (port_info->tx_desc_cur->td0 & TD_TACT && timeout--)
88 printf(SHETHER_NAME ": transmit timeout\n");
93 port_info->tx_desc_cur++;
94 if (port_info->tx_desc_cur >= port_info->tx_desc_base + NUM_TX_DESC)
95 port_info->tx_desc_cur = port_info->tx_desc_base;
101 int sh_eth_recv(struct eth_device *dev)
103 struct sh_eth_dev *eth = dev->priv;
104 int port = eth->port, len = 0;
105 struct sh_eth_info *port_info = ð->port_info[port];
108 /* Check if the rx descriptor is ready */
109 if (!(port_info->rx_desc_cur->rd0 & RD_RACT)) {
110 /* Check for errors */
111 if (!(port_info->rx_desc_cur->rd0 & RD_RFE)) {
112 len = port_info->rx_desc_cur->rd1 & 0xffff;
113 packet = (volatile u8 *)
114 ADDR_TO_P2(port_info->rx_desc_cur->rd2);
115 NetReceive(packet, len);
118 /* Make current descriptor available again */
119 if (port_info->rx_desc_cur->rd0 & RD_RDLE)
120 port_info->rx_desc_cur->rd0 = RD_RACT | RD_RDLE;
122 port_info->rx_desc_cur->rd0 = RD_RACT;
124 /* Point to the next descriptor */
125 port_info->rx_desc_cur++;
126 if (port_info->rx_desc_cur >=
127 port_info->rx_desc_base + NUM_RX_DESC)
128 port_info->rx_desc_cur = port_info->rx_desc_base;
131 /* Restart the receiver if disabled */
132 if (!(inl(EDRRR(port)) & EDRRR_R))
133 outl(EDRRR_R, EDRRR(port));
138 static int sh_eth_reset(struct sh_eth_dev *eth)
140 int port = eth->port;
141 #if defined(CONFIG_CPU_SH7763)
144 /* Start e-dmac transmitter and receiver */
145 outl(EDSR_ENALL, EDSR(port));
147 /* Perform a software reset and wait for it to complete */
148 outl(EDMR_SRST, EDMR(port));
149 for (i = 0; i < TIMEOUT_CNT ; i++) {
150 if (!(inl(EDMR(port)) & EDMR_SRST))
155 if (i == TIMEOUT_CNT) {
156 printf(SHETHER_NAME ": Software reset timeout\n");
162 outl(inl(EDMR(port)) | EDMR_SRST, EDMR(port));
164 outl(inl(EDMR(port)) & ~EDMR_SRST, EDMR(port));
170 static int sh_eth_tx_desc_init(struct sh_eth_dev *eth)
172 int port = eth->port, i, ret = 0;
174 struct sh_eth_info *port_info = ð->port_info[port];
175 struct tx_desc_s *cur_tx_desc;
178 * Allocate tx descriptors. They must be TX_DESC_SIZE bytes aligned
180 port_info->tx_desc_malloc = malloc(NUM_TX_DESC *
181 sizeof(struct tx_desc_s) +
183 if (!port_info->tx_desc_malloc) {
184 printf(SHETHER_NAME ": malloc failed\n");
189 tmp_addr = (u32) (((int)port_info->tx_desc_malloc + TX_DESC_SIZE - 1) &
190 ~(TX_DESC_SIZE - 1));
191 flush_cache_wback(tmp_addr, NUM_TX_DESC * sizeof(struct tx_desc_s));
192 /* Make sure we use a P2 address (non-cacheable) */
193 port_info->tx_desc_base = (struct tx_desc_s *)ADDR_TO_P2(tmp_addr);
194 port_info->tx_desc_cur = port_info->tx_desc_base;
196 /* Initialize all descriptors */
197 for (cur_tx_desc = port_info->tx_desc_base, i = 0; i < NUM_TX_DESC;
198 cur_tx_desc++, i++) {
199 cur_tx_desc->td0 = 0x00;
200 cur_tx_desc->td1 = 0x00;
201 cur_tx_desc->td2 = 0x00;
204 /* Mark the end of the descriptors */
206 cur_tx_desc->td0 |= TD_TDLE;
208 /* Point the controller to the tx descriptor list. Must use physical
210 outl(ADDR_TO_PHY(port_info->tx_desc_base), TDLAR(port));
211 #if defined(CONFIG_CPU_SH7763)
212 outl(ADDR_TO_PHY(port_info->tx_desc_base), TDFAR(port));
213 outl(ADDR_TO_PHY(cur_tx_desc), TDFXR(port));
214 outl(0x01, TDFFR(port));/* Last discriptor bit */
221 static int sh_eth_rx_desc_init(struct sh_eth_dev *eth)
223 int port = eth->port, i , ret = 0;
224 struct sh_eth_info *port_info = ð->port_info[port];
225 struct rx_desc_s *cur_rx_desc;
230 * Allocate rx descriptors. They must be RX_DESC_SIZE bytes aligned
232 port_info->rx_desc_malloc = malloc(NUM_RX_DESC *
233 sizeof(struct rx_desc_s) +
235 if (!port_info->rx_desc_malloc) {
236 printf(SHETHER_NAME ": malloc failed\n");
241 tmp_addr = (u32) (((int)port_info->rx_desc_malloc + RX_DESC_SIZE - 1) &
242 ~(RX_DESC_SIZE - 1));
243 flush_cache_wback(tmp_addr, NUM_RX_DESC * sizeof(struct rx_desc_s));
244 /* Make sure we use a P2 address (non-cacheable) */
245 port_info->rx_desc_base = (struct rx_desc_s *)ADDR_TO_P2(tmp_addr);
247 port_info->rx_desc_cur = port_info->rx_desc_base;
250 * Allocate rx data buffers. They must be 32 bytes aligned and in
253 port_info->rx_buf_malloc = malloc(NUM_RX_DESC * MAX_BUF_SIZE + 31);
254 if (!port_info->rx_buf_malloc) {
255 printf(SHETHER_NAME ": malloc failed\n");
260 tmp_addr = (u32)(((int)port_info->rx_buf_malloc + (32 - 1)) &
262 port_info->rx_buf_base = (u8 *)ADDR_TO_P2(tmp_addr);
264 /* Initialize all descriptors */
265 for (cur_rx_desc = port_info->rx_desc_base,
266 rx_buf = port_info->rx_buf_base, i = 0;
267 i < NUM_RX_DESC; cur_rx_desc++, rx_buf += MAX_BUF_SIZE, i++) {
268 cur_rx_desc->rd0 = RD_RACT;
269 cur_rx_desc->rd1 = MAX_BUF_SIZE << 16;
270 cur_rx_desc->rd2 = (u32) ADDR_TO_PHY(rx_buf);
273 /* Mark the end of the descriptors */
275 cur_rx_desc->rd0 |= RD_RDLE;
277 /* Point the controller to the rx descriptor list */
278 outl(ADDR_TO_PHY(port_info->rx_desc_base), RDLAR(port));
279 #if defined(CONFIG_CPU_SH7763)
280 outl(ADDR_TO_PHY(port_info->rx_desc_base), RDFAR(port));
281 outl(ADDR_TO_PHY(cur_rx_desc), RDFXR(port));
282 outl(RDFFR_RDLF, RDFFR(port));
288 free(port_info->rx_desc_malloc);
289 port_info->rx_desc_malloc = NULL;
295 static void sh_eth_tx_desc_free(struct sh_eth_dev *eth)
297 int port = eth->port;
298 struct sh_eth_info *port_info = ð->port_info[port];
300 if (port_info->tx_desc_malloc) {
301 free(port_info->tx_desc_malloc);
302 port_info->tx_desc_malloc = NULL;
306 static void sh_eth_rx_desc_free(struct sh_eth_dev *eth)
308 int port = eth->port;
309 struct sh_eth_info *port_info = ð->port_info[port];
311 if (port_info->rx_desc_malloc) {
312 free(port_info->rx_desc_malloc);
313 port_info->rx_desc_malloc = NULL;
316 if (port_info->rx_buf_malloc) {
317 free(port_info->rx_buf_malloc);
318 port_info->rx_buf_malloc = NULL;
322 static int sh_eth_desc_init(struct sh_eth_dev *eth)
326 ret = sh_eth_tx_desc_init(eth);
330 ret = sh_eth_rx_desc_init(eth);
336 sh_eth_tx_desc_free(eth);
342 static int sh_eth_phy_config(struct sh_eth_dev *eth)
344 int port = eth->port, ret = 0;
345 struct sh_eth_info *port_info = ð->port_info[port];
346 struct eth_device *dev = port_info->dev;
347 struct phy_device *phydev;
349 phydev = phy_connect(miiphy_get_dev_by_name(dev->name),
350 port_info->phy_addr, dev, PHY_INTERFACE_MODE_MII);
351 port_info->phydev = phydev;
357 static int sh_eth_config(struct sh_eth_dev *eth, bd_t *bd)
359 int port = eth->port, ret = 0;
361 struct sh_eth_info *port_info = ð->port_info[port];
362 struct eth_device *dev = port_info->dev;
363 struct phy_device *phy;
365 /* Configure e-dmac registers */
366 outl((inl(EDMR(port)) & ~EMDR_DESC_R) | EDMR_EL, EDMR(port));
367 outl(0, EESIPR(port));
368 outl(0, TRSCER(port));
370 outl((FIFO_SIZE_T | FIFO_SIZE_R), FDR(port));
371 outl(RMCR_RST, RMCR(port));
372 #if !defined(CONFIG_CPU_SH7757) && !defined(CONFIG_CPU_SH7724)
373 outl(0, RPADIR(port));
375 outl((FIFO_F_D_RFF | FIFO_F_D_RFD), FCFTR(port));
377 /* Configure e-mac registers */
378 #if defined(CONFIG_CPU_SH7757)
379 outl(ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | ECSIPR_LCHNGIP |
380 ECSIPR_MPDIP | ECSIPR_ICDIP, ECSIPR(port));
382 outl(0, ECSIPR(port));
385 /* Set Mac address */
386 val = dev->enetaddr[0] << 24 | dev->enetaddr[1] << 16 |
387 dev->enetaddr[2] << 8 | dev->enetaddr[3];
388 outl(val, MAHR(port));
390 val = dev->enetaddr[4] << 8 | dev->enetaddr[5];
391 outl(val, MALR(port));
393 outl(RFLR_RFL_MIN, RFLR(port));
394 #if !defined(CONFIG_CPU_SH7757) && !defined(CONFIG_CPU_SH7724)
397 #if !defined(CONFIG_CPU_SH7724)
398 outl(APR_AP, APR(port));
399 outl(MPR_MP, MPR(port));
401 #if defined(CONFIG_CPU_SH7763)
402 outl(TPAUSER_TPAUSE, TPAUSER(port));
403 #elif defined(CONFIG_CPU_SH7757)
404 outl(TPAUSER_UNLIMITED, TPAUSER(port));
408 ret = sh_eth_phy_config(eth);
410 printf(SHETHER_NAME ": phy config timeout\n");
413 phy = port_info->phydev;
418 /* Set the transfer speed */
419 if (phy->speed == 100) {
420 printf(SHETHER_NAME ": 100Base/");
421 #ifdef CONFIG_CPU_SH7763
422 outl(GECMR_100B, GECMR(port));
423 #elif defined(CONFIG_CPU_SH7757)
424 outl(1, RTRATE(port));
425 #elif defined(CONFIG_CPU_SH7724)
428 } else if (phy->speed == 10) {
429 printf(SHETHER_NAME ": 10Base/");
430 #ifdef CONFIG_CPU_SH7763
431 outl(GECMR_10B, GECMR(port));
432 #elif defined(CONFIG_CPU_SH7757)
433 outl(0, RTRATE(port));
437 /* Check if full duplex mode is supported by the phy */
440 outl(val | (ECMR_CHG_DM|ECMR_RE|ECMR_TE|ECMR_DM), ECMR(port));
443 outl(val | (ECMR_CHG_DM|ECMR_RE|ECMR_TE), ECMR(port));
452 static void sh_eth_start(struct sh_eth_dev *eth)
455 * Enable the e-dmac receiver only. The transmitter will be enabled when
456 * we have something to transmit
458 outl(EDRRR_R, EDRRR(eth->port));
461 static void sh_eth_stop(struct sh_eth_dev *eth)
463 outl(~EDRRR_R, EDRRR(eth->port));
466 int sh_eth_init(struct eth_device *dev, bd_t *bd)
469 struct sh_eth_dev *eth = dev->priv;
471 ret = sh_eth_reset(eth);
475 ret = sh_eth_desc_init(eth);
479 ret = sh_eth_config(eth, bd);
488 sh_eth_tx_desc_free(eth);
489 sh_eth_rx_desc_free(eth);
495 void sh_eth_halt(struct eth_device *dev)
497 struct sh_eth_dev *eth = dev->priv;
501 int sh_eth_initialize(bd_t *bd)
504 struct sh_eth_dev *eth = NULL;
505 struct eth_device *dev = NULL;
507 eth = (struct sh_eth_dev *)malloc(sizeof(struct sh_eth_dev));
509 printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
514 dev = (struct eth_device *)malloc(sizeof(struct eth_device));
516 printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
520 memset(dev, 0, sizeof(struct eth_device));
521 memset(eth, 0, sizeof(struct sh_eth_dev));
523 eth->port = CONFIG_SH_ETHER_USE_PORT;
524 eth->port_info[eth->port].phy_addr = CONFIG_SH_ETHER_PHY_ADDR;
526 dev->priv = (void *)eth;
528 dev->init = sh_eth_init;
529 dev->halt = sh_eth_halt;
530 dev->send = sh_eth_send;
531 dev->recv = sh_eth_recv;
532 eth->port_info[eth->port].dev = dev;
534 sprintf(dev->name, SHETHER_NAME);
536 /* Register Device to EtherNet subsystem */
539 bb_miiphy_buses[0].priv = eth;
540 miiphy_register(dev->name, bb_miiphy_read, bb_miiphy_write);
542 if (!eth_getenv_enetaddr("ethaddr", dev->enetaddr))
543 puts("Please set MAC address\n");
554 printf(SHETHER_NAME ": Failed\n");
558 /******* for bb_miiphy *******/
559 static int sh_eth_bb_init(struct bb_miiphy_bus *bus)
564 static int sh_eth_bb_mdio_active(struct bb_miiphy_bus *bus)
566 struct sh_eth_dev *eth = bus->priv;
567 int port = eth->port;
569 outl(inl(PIR(port)) | PIR_MMD, PIR(port));
574 static int sh_eth_bb_mdio_tristate(struct bb_miiphy_bus *bus)
576 struct sh_eth_dev *eth = bus->priv;
577 int port = eth->port;
579 outl(inl(PIR(port)) & ~PIR_MMD, PIR(port));
584 static int sh_eth_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
586 struct sh_eth_dev *eth = bus->priv;
587 int port = eth->port;
590 outl(inl(PIR(port)) | PIR_MDO, PIR(port));
592 outl(inl(PIR(port)) & ~PIR_MDO, PIR(port));
597 static int sh_eth_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
599 struct sh_eth_dev *eth = bus->priv;
600 int port = eth->port;
602 *v = (inl(PIR(port)) & PIR_MDI) >> 3;
607 static int sh_eth_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
609 struct sh_eth_dev *eth = bus->priv;
610 int port = eth->port;
613 outl(inl(PIR(port)) | PIR_MDC, PIR(port));
615 outl(inl(PIR(port)) & ~PIR_MDC, PIR(port));
620 static int sh_eth_bb_delay(struct bb_miiphy_bus *bus)
627 struct bb_miiphy_bus bb_miiphy_buses[] = {
630 .init = sh_eth_bb_init,
631 .mdio_active = sh_eth_bb_mdio_active,
632 .mdio_tristate = sh_eth_bb_mdio_tristate,
633 .set_mdio = sh_eth_bb_set_mdio,
634 .get_mdio = sh_eth_bb_get_mdio,
635 .set_mdc = sh_eth_bb_set_mdc,
636 .delay = sh_eth_bb_delay,
639 int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses);