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Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
[linux-2.6/mini2440.git] / drivers / net / sh_eth.c
blob3ab28bb00c12296095f56bd72ca35dd3a318c1da
1 /*
2 * SuperH Ethernet device driver
3 *
4 * Copyright (C) 2006-2008 Nobuhiro Iwamatsu
5 * Copyright (C) 2008 Renesas Solutions Corp.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2, as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * The full GNU General Public License is included in this distribution in
20 * the file called "COPYING".
21 */
22
23 #include <linux/init.h>
24 #include <linux/dma-mapping.h>
25 #include <linux/etherdevice.h>
26 #include <linux/delay.h>
27 #include <linux/platform_device.h>
28 #include <linux/mdio-bitbang.h>
29 #include <linux/netdevice.h>
30 #include <linux/phy.h>
31 #include <linux/cache.h>
32 #include <linux/io.h>
33
34 #include "sh_eth.h"
35
36 /* CPU <-> EDMAC endian convert */
37 static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x)
38 {
39 switch (mdp->edmac_endian) {
40 case EDMAC_LITTLE_ENDIAN:
41 return cpu_to_le32(x);
42 case EDMAC_BIG_ENDIAN:
43 return cpu_to_be32(x);
44 }
45 return x;
46 }
47
48 static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x)
49 {
50 switch (mdp->edmac_endian) {
51 case EDMAC_LITTLE_ENDIAN:
52 return le32_to_cpu(x);
53 case EDMAC_BIG_ENDIAN:
54 return be32_to_cpu(x);
55 }
56 return x;
57 }
58
59 /*
60 * Program the hardware MAC address from dev->dev_addr.
61 */
62 static void update_mac_address(struct net_device *ndev)
63 {
64 u32 ioaddr = ndev->base_addr;
65
66 ctrl_outl((ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
67 (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]),
68 ioaddr + MAHR);
69 ctrl_outl((ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]),
70 ioaddr + MALR);
71 }
72
73 /*
74 * Get MAC address from SuperH MAC address register
75 *
76 * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
77 * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
78 * When you want use this device, you must set MAC address in bootloader.
79 *
80 */
81 static void read_mac_address(struct net_device *ndev)
82 {
83 u32 ioaddr = ndev->base_addr;
84
85 ndev->dev_addr[0] = (ctrl_inl(ioaddr + MAHR) >> 24);
86 ndev->dev_addr[1] = (ctrl_inl(ioaddr + MAHR) >> 16) & 0xFF;
87 ndev->dev_addr[2] = (ctrl_inl(ioaddr + MAHR) >> 8) & 0xFF;
88 ndev->dev_addr[3] = (ctrl_inl(ioaddr + MAHR) & 0xFF);
89 ndev->dev_addr[4] = (ctrl_inl(ioaddr + MALR) >> 8) & 0xFF;
90 ndev->dev_addr[5] = (ctrl_inl(ioaddr + MALR) & 0xFF);
91 }
92
93 struct bb_info {
94 struct mdiobb_ctrl ctrl;
95 u32 addr;
96 u32 mmd_msk;/* MMD */
97 u32 mdo_msk;
98 u32 mdi_msk;
99 u32 mdc_msk;
100 };
101
102 /* PHY bit set */
103 static void bb_set(u32 addr, u32 msk)
104 {
105 ctrl_outl(ctrl_inl(addr) | msk, addr);
106 }
107
108 /* PHY bit clear */
109 static void bb_clr(u32 addr, u32 msk)
110 {
111 ctrl_outl((ctrl_inl(addr) & ~msk), addr);
112 }
113
114 /* PHY bit read */
115 static int bb_read(u32 addr, u32 msk)
116 {
117 return (ctrl_inl(addr) & msk) != 0;
118 }
119
120 /* Data I/O pin control */
121 static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
122 {
123 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
124 if (bit)
125 bb_set(bitbang->addr, bitbang->mmd_msk);
126 else
127 bb_clr(bitbang->addr, bitbang->mmd_msk);
128 }
129
130 /* Set bit data*/
131 static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
132 {
133 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
134
135 if (bit)
136 bb_set(bitbang->addr, bitbang->mdo_msk);
137 else
138 bb_clr(bitbang->addr, bitbang->mdo_msk);
139 }
140
141 /* Get bit data*/
142 static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
143 {
144 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
145 return bb_read(bitbang->addr, bitbang->mdi_msk);
146 }
147
148 /* MDC pin control */
149 static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
150 {
151 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
152
153 if (bit)
154 bb_set(bitbang->addr, bitbang->mdc_msk);
155 else
156 bb_clr(bitbang->addr, bitbang->mdc_msk);
157 }
158
159 /* mdio bus control struct */
160 static struct mdiobb_ops bb_ops = {
161 .owner = THIS_MODULE,
162 .set_mdc = sh_mdc_ctrl,
163 .set_mdio_dir = sh_mmd_ctrl,
164 .set_mdio_data = sh_set_mdio,
165 .get_mdio_data = sh_get_mdio,
166 };
167
168 /* Chip Reset */
169 static void sh_eth_reset(struct net_device *ndev)
170 {
171 u32 ioaddr = ndev->base_addr;
172
173 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
174 int cnt = 100;
175
176 ctrl_outl(EDSR_ENALL, ioaddr + EDSR);
177 ctrl_outl(ctrl_inl(ioaddr + EDMR) | EDMR_SRST, ioaddr + EDMR);
178 while (cnt > 0) {
179 if (!(ctrl_inl(ioaddr + EDMR) & 0x3))
180 break;
181 mdelay(1);
182 cnt--;
183 }
184 if (cnt < 0)
185 printk(KERN_ERR "Device reset fail\n");
186
187 /* Table Init */
188 ctrl_outl(0x0, ioaddr + TDLAR);
189 ctrl_outl(0x0, ioaddr + TDFAR);
190 ctrl_outl(0x0, ioaddr + TDFXR);
191 ctrl_outl(0x0, ioaddr + TDFFR);
192 ctrl_outl(0x0, ioaddr + RDLAR);
193 ctrl_outl(0x0, ioaddr + RDFAR);
194 ctrl_outl(0x0, ioaddr + RDFXR);
195 ctrl_outl(0x0, ioaddr + RDFFR);
196 #else
197 ctrl_outl(ctrl_inl(ioaddr + EDMR) | EDMR_SRST, ioaddr + EDMR);
198 mdelay(3);
199 ctrl_outl(ctrl_inl(ioaddr + EDMR) & ~EDMR_SRST, ioaddr + EDMR);
200 #endif
201 }
202
203 /* free skb and descriptor buffer */
204 static void sh_eth_ring_free(struct net_device *ndev)
205 {
206 struct sh_eth_private *mdp = netdev_priv(ndev);
207 int i;
208
209 /* Free Rx skb ringbuffer */
210 if (mdp->rx_skbuff) {
211 for (i = 0; i < RX_RING_SIZE; i++) {
212 if (mdp->rx_skbuff[i])
213 dev_kfree_skb(mdp->rx_skbuff[i]);
214 }
215 }
216 kfree(mdp->rx_skbuff);
217
218 /* Free Tx skb ringbuffer */
219 if (mdp->tx_skbuff) {
220 for (i = 0; i < TX_RING_SIZE; i++) {
221 if (mdp->tx_skbuff[i])
222 dev_kfree_skb(mdp->tx_skbuff[i]);
223 }
224 }
225 kfree(mdp->tx_skbuff);
226 }
227
228 /* format skb and descriptor buffer */
229 static void sh_eth_ring_format(struct net_device *ndev)
230 {
231 u32 ioaddr = ndev->base_addr, reserve = 0;
232 struct sh_eth_private *mdp = netdev_priv(ndev);
233 int i;
234 struct sk_buff *skb;
235 struct sh_eth_rxdesc *rxdesc = NULL;
236 struct sh_eth_txdesc *txdesc = NULL;
237 int rx_ringsize = sizeof(*rxdesc) * RX_RING_SIZE;
238 int tx_ringsize = sizeof(*txdesc) * TX_RING_SIZE;
239
240 mdp->cur_rx = mdp->cur_tx = 0;
241 mdp->dirty_rx = mdp->dirty_tx = 0;
242
243 memset(mdp->rx_ring, 0, rx_ringsize);
244
245 /* build Rx ring buffer */
246 for (i = 0; i < RX_RING_SIZE; i++) {
247 /* skb */
248 mdp->rx_skbuff[i] = NULL;
249 skb = dev_alloc_skb(mdp->rx_buf_sz);
250 mdp->rx_skbuff[i] = skb;
251 if (skb == NULL)
252 break;
253 skb->dev = ndev; /* Mark as being used by this device. */
254 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
255 reserve = SH7763_SKB_ALIGN
256 - ((uint32_t)skb->data & (SH7763_SKB_ALIGN-1));
257 if (reserve)
258 skb_reserve(skb, reserve);
259 #else
260 skb_reserve(skb, RX_OFFSET);
261 #endif
262 /* RX descriptor */
263 rxdesc = &mdp->rx_ring[i];
264 rxdesc->addr = (u32)skb->data & ~0x3UL;
265 rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);
266
267 /* The size of the buffer is 16 byte boundary. */
268 rxdesc->buffer_length = (mdp->rx_buf_sz + 16) & ~0x0F;
269 /* Rx descriptor address set */
270 if (i == 0) {
271 ctrl_outl((u32)rxdesc, ioaddr + RDLAR);
272 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
273 ctrl_outl((u32)rxdesc, ioaddr + RDFAR);
274 #endif
275 }
276 }
277
278 /* Rx descriptor address set */
279 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
280 ctrl_outl((u32)rxdesc, ioaddr + RDFXR);
281 ctrl_outl(0x1, ioaddr + RDFFR);
282 #endif
283
284 mdp->dirty_rx = (u32) (i - RX_RING_SIZE);
285
286 /* Mark the last entry as wrapping the ring. */
287 rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
288
289 memset(mdp->tx_ring, 0, tx_ringsize);
290
291 /* build Tx ring buffer */
292 for (i = 0; i < TX_RING_SIZE; i++) {
293 mdp->tx_skbuff[i] = NULL;
294 txdesc = &mdp->tx_ring[i];
295 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
296 txdesc->buffer_length = 0;
297 if (i == 0) {
298 /* Tx descriptor address set */
299 ctrl_outl((u32)txdesc, ioaddr + TDLAR);
300 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
301 ctrl_outl((u32)txdesc, ioaddr + TDFAR);
302 #endif
303 }
304 }
305
306 /* Tx descriptor address set */
307 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
308 ctrl_outl((u32)txdesc, ioaddr + TDFXR);
309 ctrl_outl(0x1, ioaddr + TDFFR);
310 #endif
311
312 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
313 }
314
315 /* Get skb and descriptor buffer */
316 static int sh_eth_ring_init(struct net_device *ndev)
317 {
318 struct sh_eth_private *mdp = netdev_priv(ndev);
319 int rx_ringsize, tx_ringsize, ret = 0;
320
321 /*
322 * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
323 * card needs room to do 8 byte alignment, +2 so we can reserve
324 * the first 2 bytes, and +16 gets room for the status word from the
325 * card.
326 */
327 mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
328 (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
329
330 /* Allocate RX and TX skb rings */
331 mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE,
332 GFP_KERNEL);
333 if (!mdp->rx_skbuff) {
334 printk(KERN_ERR "%s: Cannot allocate Rx skb\n", ndev->name);
335 ret = -ENOMEM;
336 return ret;
337 }
338
339 mdp->tx_skbuff = kmalloc(sizeof(*mdp->tx_skbuff) * TX_RING_SIZE,
340 GFP_KERNEL);
341 if (!mdp->tx_skbuff) {
342 printk(KERN_ERR "%s: Cannot allocate Tx skb\n", ndev->name);
343 ret = -ENOMEM;
344 goto skb_ring_free;
345 }
346
347 /* Allocate all Rx descriptors. */
348 rx_ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
349 mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma,
350 GFP_KERNEL);
351
352 if (!mdp->rx_ring) {
353 printk(KERN_ERR "%s: Cannot allocate Rx Ring (size %d bytes)\n",
354 ndev->name, rx_ringsize);
355 ret = -ENOMEM;
356 goto desc_ring_free;
357 }
358
359 mdp->dirty_rx = 0;
360
361 /* Allocate all Tx descriptors. */
362 tx_ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
363 mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma,
364 GFP_KERNEL);
365 if (!mdp->tx_ring) {
366 printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
367 ndev->name, tx_ringsize);
368 ret = -ENOMEM;
369 goto desc_ring_free;
370 }
371 return ret;
372
373 desc_ring_free:
374 /* free DMA buffer */
375 dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma);
376
377 skb_ring_free:
378 /* Free Rx and Tx skb ring buffer */
379 sh_eth_ring_free(ndev);
380
381 return ret;
382 }
383
384 static int sh_eth_dev_init(struct net_device *ndev)
385 {
386 int ret = 0;
387 struct sh_eth_private *mdp = netdev_priv(ndev);
388 u32 ioaddr = ndev->base_addr;
389 u_int32_t rx_int_var, tx_int_var;
390 u32 val;
391
392 /* Soft Reset */
393 sh_eth_reset(ndev);
394
395 /* Descriptor format */
396 sh_eth_ring_format(ndev);
397 ctrl_outl(RPADIR_INIT, ioaddr + RPADIR);
398
399 /* all sh_eth int mask */
400 ctrl_outl(0, ioaddr + EESIPR);
401
402 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
403 ctrl_outl(EDMR_EL, ioaddr + EDMR);
404 #else
405 ctrl_outl(0, ioaddr + EDMR); /* Endian change */
406 #endif
407
408 /* FIFO size set */
409 ctrl_outl((FIFO_SIZE_T | FIFO_SIZE_R), ioaddr + FDR);
410 ctrl_outl(0, ioaddr + TFTR);
411
412 /* Frame recv control */
413 ctrl_outl(0, ioaddr + RMCR);
414
415 rx_int_var = mdp->rx_int_var = DESC_I_RINT8 | DESC_I_RINT5;
416 tx_int_var = mdp->tx_int_var = DESC_I_TINT2;
417 ctrl_outl(rx_int_var | tx_int_var, ioaddr + TRSCER);
418
419 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
420 /* Burst sycle set */
421 ctrl_outl(0x800, ioaddr + BCULR);
422 #endif
423
424 ctrl_outl((FIFO_F_D_RFF | FIFO_F_D_RFD), ioaddr + FCFTR);
425
426 #if !defined(CONFIG_CPU_SUBTYPE_SH7763)
427 ctrl_outl(0, ioaddr + TRIMD);
428 #endif
429
430 /* Recv frame limit set register */
431 ctrl_outl(RFLR_VALUE, ioaddr + RFLR);
432
433 ctrl_outl(ctrl_inl(ioaddr + EESR), ioaddr + EESR);
434 ctrl_outl((DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff), ioaddr + EESIPR);
435
436 /* PAUSE Prohibition */
437 val = (ctrl_inl(ioaddr + ECMR) & ECMR_DM) |
438 ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE;
439
440 ctrl_outl(val, ioaddr + ECMR);
441
442 /* E-MAC Status Register clear */
443 ctrl_outl(ECSR_INIT, ioaddr + ECSR);
444
445 /* E-MAC Interrupt Enable register */
446 ctrl_outl(ECSIPR_INIT, ioaddr + ECSIPR);
447
448 /* Set MAC address */
449 update_mac_address(ndev);
450
451 /* mask reset */
452 #if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7763)
453 ctrl_outl(APR_AP, ioaddr + APR);
454 ctrl_outl(MPR_MP, ioaddr + MPR);
455 ctrl_outl(TPAUSER_UNLIMITED, ioaddr + TPAUSER);
456 #endif
457 #if defined(CONFIG_CPU_SUBTYPE_SH7710)
458 ctrl_outl(BCFR_UNLIMITED, ioaddr + BCFR);
459 #endif
460
461 /* Setting the Rx mode will start the Rx process. */
462 ctrl_outl(EDRRR_R, ioaddr + EDRRR);
463
464 netif_start_queue(ndev);
465
466 return ret;
467 }
468
469 /* free Tx skb function */
470 static int sh_eth_txfree(struct net_device *ndev)
471 {
472 struct sh_eth_private *mdp = netdev_priv(ndev);
473 struct sh_eth_txdesc *txdesc;
474 int freeNum = 0;
475 int entry = 0;
476
477 for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
478 entry = mdp->dirty_tx % TX_RING_SIZE;
479 txdesc = &mdp->tx_ring[entry];
480 if (txdesc->status & cpu_to_edmac(mdp, TD_TACT))
481 break;
482 /* Free the original skb. */
483 if (mdp->tx_skbuff[entry]) {
484 dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
485 mdp->tx_skbuff[entry] = NULL;
486 freeNum++;
487 }
488 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
489 if (entry >= TX_RING_SIZE - 1)
490 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
491
492 mdp->stats.tx_packets++;
493 mdp->stats.tx_bytes += txdesc->buffer_length;
494 }
495 return freeNum;
496 }
497
498 /* Packet receive function */
499 static int sh_eth_rx(struct net_device *ndev)
500 {
501 struct sh_eth_private *mdp = netdev_priv(ndev);
502 struct sh_eth_rxdesc *rxdesc;
503
504 int entry = mdp->cur_rx % RX_RING_SIZE;
505 int boguscnt = (mdp->dirty_rx + RX_RING_SIZE) - mdp->cur_rx;
506 struct sk_buff *skb;
507 u16 pkt_len = 0;
508 u32 desc_status, reserve = 0;
509
510 rxdesc = &mdp->rx_ring[entry];
511 while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) {
512 desc_status = edmac_to_cpu(mdp, rxdesc->status);
513 pkt_len = rxdesc->frame_length;
514
515 if (--boguscnt < 0)
516 break;
517
518 if (!(desc_status & RDFEND))
519 mdp->stats.rx_length_errors++;
520
521 if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
522 RD_RFS5 | RD_RFS6 | RD_RFS10)) {
523 mdp->stats.rx_errors++;
524 if (desc_status & RD_RFS1)
525 mdp->stats.rx_crc_errors++;
526 if (desc_status & RD_RFS2)
527 mdp->stats.rx_frame_errors++;
528 if (desc_status & RD_RFS3)
529 mdp->stats.rx_length_errors++;
530 if (desc_status & RD_RFS4)
531 mdp->stats.rx_length_errors++;
532 if (desc_status & RD_RFS6)
533 mdp->stats.rx_missed_errors++;
534 if (desc_status & RD_RFS10)
535 mdp->stats.rx_over_errors++;
536 } else {
537 swaps((char *)(rxdesc->addr & ~0x3), pkt_len + 2);
538 skb = mdp->rx_skbuff[entry];
539 mdp->rx_skbuff[entry] = NULL;
540 skb_put(skb, pkt_len);
541 skb->protocol = eth_type_trans(skb, ndev);
542 netif_rx(skb);
543 mdp->stats.rx_packets++;
544 mdp->stats.rx_bytes += pkt_len;
545 }
546 rxdesc->status |= cpu_to_edmac(mdp, RD_RACT);
547 entry = (++mdp->cur_rx) % RX_RING_SIZE;
548 }
549
550 /* Refill the Rx ring buffers. */
551 for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
552 entry = mdp->dirty_rx % RX_RING_SIZE;
553 rxdesc = &mdp->rx_ring[entry];
554 /* The size of the buffer is 16 byte boundary. */
555 rxdesc->buffer_length = (mdp->rx_buf_sz + 16) & ~0x0F;
556
557 if (mdp->rx_skbuff[entry] == NULL) {
558 skb = dev_alloc_skb(mdp->rx_buf_sz);
559 mdp->rx_skbuff[entry] = skb;
560 if (skb == NULL)
561 break; /* Better luck next round. */
562 skb->dev = ndev;
563 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
564 reserve = SH7763_SKB_ALIGN
565 - ((uint32_t)skb->data & (SH7763_SKB_ALIGN-1));
566 if (reserve)
567 skb_reserve(skb, reserve);
568 #else
569 skb_reserve(skb, RX_OFFSET);
570 #endif
571 skb->ip_summed = CHECKSUM_NONE;
572 rxdesc->addr = (u32)skb->data & ~0x3UL;
573 }
574 if (entry >= RX_RING_SIZE - 1)
575 rxdesc->status |=
576 cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL);
577 else
578 rxdesc->status |=
579 cpu_to_edmac(mdp, RD_RACT | RD_RFP);
580 }
581
582 /* Restart Rx engine if stopped. */
583 /* If we don't need to check status, don't. -KDU */
584 if (!(ctrl_inl(ndev->base_addr + EDRRR) & EDRRR_R))
585 ctrl_outl(EDRRR_R, ndev->base_addr + EDRRR);
586
587 return 0;
588 }
589
590 /* error control function */
591 static void sh_eth_error(struct net_device *ndev, int intr_status)
592 {
593 struct sh_eth_private *mdp = netdev_priv(ndev);
594 u32 ioaddr = ndev->base_addr;
595 u32 felic_stat;
596
597 if (intr_status & EESR_ECI) {
598 felic_stat = ctrl_inl(ioaddr + ECSR);
599 ctrl_outl(felic_stat, ioaddr + ECSR); /* clear int */
600 if (felic_stat & ECSR_ICD)
601 mdp->stats.tx_carrier_errors++;
602 if (felic_stat & ECSR_LCHNG) {
603 /* Link Changed */
604 u32 link_stat = (ctrl_inl(ioaddr + PSR));
605 if (!(link_stat & PHY_ST_LINK)) {
606 /* Link Down : disable tx and rx */
607 ctrl_outl(ctrl_inl(ioaddr + ECMR) &
608 ~(ECMR_RE | ECMR_TE), ioaddr + ECMR);
609 } else {
610 /* Link Up */
611 ctrl_outl(ctrl_inl(ioaddr + EESIPR) &
612 ~DMAC_M_ECI, ioaddr + EESIPR);
613 /*clear int */
614 ctrl_outl(ctrl_inl(ioaddr + ECSR),
615 ioaddr + ECSR);
616 ctrl_outl(ctrl_inl(ioaddr + EESIPR) |
617 DMAC_M_ECI, ioaddr + EESIPR);
618 /* enable tx and rx */
619 ctrl_outl(ctrl_inl(ioaddr + ECMR) |
620 (ECMR_RE | ECMR_TE), ioaddr + ECMR);
621 }
622 }
623 }
624
625 if (intr_status & EESR_TWB) {
626 /* Write buck end. unused write back interrupt */
627 if (intr_status & EESR_TABT) /* Transmit Abort int */
628 mdp->stats.tx_aborted_errors++;
629 }
630
631 if (intr_status & EESR_RABT) {
632 /* Receive Abort int */
633 if (intr_status & EESR_RFRMER) {
634 /* Receive Frame Overflow int */
635 mdp->stats.rx_frame_errors++;
636 printk(KERN_ERR "Receive Frame Overflow\n");
637 }
638 }
639 #if !defined(CONFIG_CPU_SUBTYPE_SH7763)
640 if (intr_status & EESR_ADE) {
641 if (intr_status & EESR_TDE) {
642 if (intr_status & EESR_TFE)
643 mdp->stats.tx_fifo_errors++;
644 }
645 }
646 #endif
647
648 if (intr_status & EESR_RDE) {
649 /* Receive Descriptor Empty int */
650 mdp->stats.rx_over_errors++;
651
652 if (ctrl_inl(ioaddr + EDRRR) ^ EDRRR_R)
653 ctrl_outl(EDRRR_R, ioaddr + EDRRR);
654 printk(KERN_ERR "Receive Descriptor Empty\n");
655 }
656 if (intr_status & EESR_RFE) {
657 /* Receive FIFO Overflow int */
658 mdp->stats.rx_fifo_errors++;
659 printk(KERN_ERR "Receive FIFO Overflow\n");
660 }
661 if (intr_status & (EESR_TWB | EESR_TABT |
662 #if !defined(CONFIG_CPU_SUBTYPE_SH7763)
663 EESR_ADE |
664 #endif
665 EESR_TDE | EESR_TFE)) {
666 /* Tx error */
667 u32 edtrr = ctrl_inl(ndev->base_addr + EDTRR);
668 /* dmesg */
669 printk(KERN_ERR "%s:TX error. status=%8.8x cur_tx=%8.8x ",
670 ndev->name, intr_status, mdp->cur_tx);
671 printk(KERN_ERR "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
672 mdp->dirty_tx, (u32) ndev->state, edtrr);
673 /* dirty buffer free */
674 sh_eth_txfree(ndev);
675
676 /* SH7712 BUG */
677 if (edtrr ^ EDTRR_TRNS) {
678 /* tx dma start */
679 ctrl_outl(EDTRR_TRNS, ndev->base_addr + EDTRR);
680 }
681 /* wakeup */
682 netif_wake_queue(ndev);
683 }
684 }
685
686 static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
687 {
688 struct net_device *ndev = netdev;
689 struct sh_eth_private *mdp = netdev_priv(ndev);
690 irqreturn_t ret = IRQ_NONE;
691 u32 ioaddr, boguscnt = RX_RING_SIZE;
692 u32 intr_status = 0;
693
694 ioaddr = ndev->base_addr;
695 spin_lock(&mdp->lock);
696
697 /* Get interrpt stat */
698 intr_status = ctrl_inl(ioaddr + EESR);
699 /* Clear interrupt */
700 if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF |
701 EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF |
702 TX_CHECK | EESR_ERR_CHECK)) {
703 ctrl_outl(intr_status, ioaddr + EESR);
704 ret = IRQ_HANDLED;
705 } else
706 goto other_irq;
707
708 if (intr_status & (EESR_FRC | /* Frame recv*/
709 EESR_RMAF | /* Multi cast address recv*/
710 EESR_RRF | /* Bit frame recv */
711 EESR_RTLF | /* Long frame recv*/
712 EESR_RTSF | /* short frame recv */
713 EESR_PRE | /* PHY-LSI recv error */
714 EESR_CERF)){ /* recv frame CRC error */
715 sh_eth_rx(ndev);
716 }
717
718 /* Tx Check */
719 if (intr_status & TX_CHECK) {
720 sh_eth_txfree(ndev);
721 netif_wake_queue(ndev);
722 }
723
724 if (intr_status & EESR_ERR_CHECK)
725 sh_eth_error(ndev, intr_status);
726
727 if (--boguscnt < 0) {
728 printk(KERN_WARNING
729 "%s: Too much work at interrupt, status=0x%4.4x.\n",
730 ndev->name, intr_status);
731 }
732
733 other_irq:
734 spin_unlock(&mdp->lock);
735
736 return ret;
737 }
738
739 static void sh_eth_timer(unsigned long data)
740 {
741 struct net_device *ndev = (struct net_device *)data;
742 struct sh_eth_private *mdp = netdev_priv(ndev);
743
744 mod_timer(&mdp->timer, jiffies + (10 * HZ));
745 }
746
747 /* PHY state control function */
748 static void sh_eth_adjust_link(struct net_device *ndev)
749 {
750 struct sh_eth_private *mdp = netdev_priv(ndev);
751 struct phy_device *phydev = mdp->phydev;
752 u32 ioaddr = ndev->base_addr;
753 int new_state = 0;
754
755 if (phydev->link != PHY_DOWN) {
756 if (phydev->duplex != mdp->duplex) {
757 new_state = 1;
758 mdp->duplex = phydev->duplex;
759 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
760 if (mdp->duplex) { /* FULL */
761 ctrl_outl(ctrl_inl(ioaddr + ECMR) | ECMR_DM,
762 ioaddr + ECMR);
763 } else { /* Half */
764 ctrl_outl(ctrl_inl(ioaddr + ECMR) & ~ECMR_DM,
765 ioaddr + ECMR);
766 }
767 #endif
768 }
769
770 if (phydev->speed != mdp->speed) {
771 new_state = 1;
772 mdp->speed = phydev->speed;
773 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
774 switch (mdp->speed) {
775 case 10: /* 10BASE */
776 ctrl_outl(GECMR_10, ioaddr + GECMR); break;
777 case 100:/* 100BASE */
778 ctrl_outl(GECMR_100, ioaddr + GECMR); break;
779 case 1000: /* 1000BASE */
780 ctrl_outl(GECMR_1000, ioaddr + GECMR); break;
781 default:
782 break;
783 }
784 #endif
785 }
786 if (mdp->link == PHY_DOWN) {
787 ctrl_outl((ctrl_inl(ioaddr + ECMR) & ~ECMR_TXF)
788 | ECMR_DM, ioaddr + ECMR);
789 new_state = 1;
790 mdp->link = phydev->link;
791 }
792 } else if (mdp->link) {
793 new_state = 1;
794 mdp->link = PHY_DOWN;
795 mdp->speed = 0;
796 mdp->duplex = -1;
797 }
798
799 if (new_state)
800 phy_print_status(phydev);
801 }
802
803 /* PHY init function */
804 static int sh_eth_phy_init(struct net_device *ndev)
805 {
806 struct sh_eth_private *mdp = netdev_priv(ndev);
807 char phy_id[BUS_ID_SIZE];
808 struct phy_device *phydev = NULL;
809
810 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
811 mdp->mii_bus->id , mdp->phy_id);
812
813 mdp->link = PHY_DOWN;
814 mdp->speed = 0;
815 mdp->duplex = -1;
816
817 /* Try connect to PHY */
818 phydev = phy_connect(ndev, phy_id, &sh_eth_adjust_link,
819 0, PHY_INTERFACE_MODE_MII);
820 if (IS_ERR(phydev)) {
821 dev_err(&ndev->dev, "phy_connect failed\n");
822 return PTR_ERR(phydev);
823 }
824 dev_info(&ndev->dev, "attached phy %i to driver %s\n",
825 phydev->addr, phydev->drv->name);
826
827 mdp->phydev = phydev;
828
829 return 0;
830 }
831
832 /* PHY control start function */
833 static int sh_eth_phy_start(struct net_device *ndev)
834 {
835 struct sh_eth_private *mdp = netdev_priv(ndev);
836 int ret;
837
838 ret = sh_eth_phy_init(ndev);
839 if (ret)
840 return ret;
841
842 /* reset phy - this also wakes it from PDOWN */
843 phy_write(mdp->phydev, MII_BMCR, BMCR_RESET);
844 phy_start(mdp->phydev);
845
846 return 0;
847 }
848
849 /* network device open function */
850 static int sh_eth_open(struct net_device *ndev)
851 {
852 int ret = 0;
853 struct sh_eth_private *mdp = netdev_priv(ndev);
854
855 ret = request_irq(ndev->irq, &sh_eth_interrupt,
856 #if defined(CONFIG_CPU_SUBTYPE_SH7763) || defined(CONFIG_CPU_SUBTYPE_SH7764)
857 IRQF_SHARED,
858 #else
859 0,
860 #endif
861 ndev->name, ndev);
862 if (ret) {
863 printk(KERN_ERR "Can not assign IRQ number to %s\n", CARDNAME);
864 return ret;
865 }
866
867 /* Descriptor set */
868 ret = sh_eth_ring_init(ndev);
869 if (ret)
870 goto out_free_irq;
871
872 /* device init */
873 ret = sh_eth_dev_init(ndev);
874 if (ret)
875 goto out_free_irq;
876
877 /* PHY control start*/
878 ret = sh_eth_phy_start(ndev);
879 if (ret)
880 goto out_free_irq;
881
882 /* Set the timer to check for link beat. */
883 init_timer(&mdp->timer);
884 mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
885 setup_timer(&mdp->timer, sh_eth_timer, (unsigned long)ndev);
886
887 return ret;
888
889 out_free_irq:
890 free_irq(ndev->irq, ndev);
891 return ret;
892 }
893
894 /* Timeout function */
895 static void sh_eth_tx_timeout(struct net_device *ndev)
896 {
897 struct sh_eth_private *mdp = netdev_priv(ndev);
898 u32 ioaddr = ndev->base_addr;
899 struct sh_eth_rxdesc *rxdesc;
900 int i;
901
902 netif_stop_queue(ndev);
903
904 /* worning message out. */
905 printk(KERN_WARNING "%s: transmit timed out, status %8.8x,"
906 " resetting...\n", ndev->name, (int)ctrl_inl(ioaddr + EESR));
907
908 /* tx_errors count up */
909 mdp->stats.tx_errors++;
910
911 /* timer off */
912 del_timer_sync(&mdp->timer);
913
914 /* Free all the skbuffs in the Rx queue. */
915 for (i = 0; i < RX_RING_SIZE; i++) {
916 rxdesc = &mdp->rx_ring[i];
917 rxdesc->status = 0;
918 rxdesc->addr = 0xBADF00D0;
919 if (mdp->rx_skbuff[i])
920 dev_kfree_skb(mdp->rx_skbuff[i]);
921 mdp->rx_skbuff[i] = NULL;
922 }
923 for (i = 0; i < TX_RING_SIZE; i++) {
924 if (mdp->tx_skbuff[i])
925 dev_kfree_skb(mdp->tx_skbuff[i]);
926 mdp->tx_skbuff[i] = NULL;
927 }
928
929 /* device init */
930 sh_eth_dev_init(ndev);
931
932 /* timer on */
933 mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
934 add_timer(&mdp->timer);
935 }
936
937 /* Packet transmit function */
938 static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
939 {
940 struct sh_eth_private *mdp = netdev_priv(ndev);
941 struct sh_eth_txdesc *txdesc;
942 u32 entry;
943 unsigned long flags;
944
945 spin_lock_irqsave(&mdp->lock, flags);
946 if ((mdp->cur_tx - mdp->dirty_tx) >= (TX_RING_SIZE - 4)) {
947 if (!sh_eth_txfree(ndev)) {
948 netif_stop_queue(ndev);
949 spin_unlock_irqrestore(&mdp->lock, flags);
950 return 1;
951 }
952 }
953 spin_unlock_irqrestore(&mdp->lock, flags);
954
955 entry = mdp->cur_tx % TX_RING_SIZE;
956 mdp->tx_skbuff[entry] = skb;
957 txdesc = &mdp->tx_ring[entry];
958 txdesc->addr = (u32)(skb->data);
959 /* soft swap. */
960 swaps((char *)(txdesc->addr & ~0x3), skb->len + 2);
961 /* write back */
962 __flush_purge_region(skb->data, skb->len);
963 if (skb->len < ETHERSMALL)
964 txdesc->buffer_length = ETHERSMALL;
965 else
966 txdesc->buffer_length = skb->len;
967
968 if (entry >= TX_RING_SIZE - 1)
969 txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE);
970 else
971 txdesc->status |= cpu_to_edmac(mdp, TD_TACT);
972
973 mdp->cur_tx++;
974
975 if (!(ctrl_inl(ndev->base_addr + EDTRR) & EDTRR_TRNS))
976 ctrl_outl(EDTRR_TRNS, ndev->base_addr + EDTRR);
977
978 ndev->trans_start = jiffies;
979
980 return 0;
981 }
982
983 /* device close function */
984 static int sh_eth_close(struct net_device *ndev)
985 {
986 struct sh_eth_private *mdp = netdev_priv(ndev);
987 u32 ioaddr = ndev->base_addr;
988 int ringsize;
989
990 netif_stop_queue(ndev);
991
992 /* Disable interrupts by clearing the interrupt mask. */
993 ctrl_outl(0x0000, ioaddr + EESIPR);
994
995 /* Stop the chip's Tx and Rx processes. */
996 ctrl_outl(0, ioaddr + EDTRR);
997 ctrl_outl(0, ioaddr + EDRRR);
998
999 /* PHY Disconnect */
1000 if (mdp->phydev) {
1001 phy_stop(mdp->phydev);
1002 phy_disconnect(mdp->phydev);
1003 }
1004
1005 free_irq(ndev->irq, ndev);
1006
1007 del_timer_sync(&mdp->timer);
1008
1009 /* Free all the skbuffs in the Rx queue. */
1010 sh_eth_ring_free(ndev);
1011
1012 /* free DMA buffer */
1013 ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
1014 dma_free_coherent(NULL, ringsize, mdp->rx_ring, mdp->rx_desc_dma);
1015
1016 /* free DMA buffer */
1017 ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
1018 dma_free_coherent(NULL, ringsize, mdp->tx_ring, mdp->tx_desc_dma);
1019
1020 return 0;
1021 }
1022
1023 static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
1024 {
1025 struct sh_eth_private *mdp = netdev_priv(ndev);
1026 u32 ioaddr = ndev->base_addr;
1027
1028 mdp->stats.tx_dropped += ctrl_inl(ioaddr + TROCR);
1029 ctrl_outl(0, ioaddr + TROCR); /* (write clear) */
1030 mdp->stats.collisions += ctrl_inl(ioaddr + CDCR);
1031 ctrl_outl(0, ioaddr + CDCR); /* (write clear) */
1032 mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + LCCR);
1033 ctrl_outl(0, ioaddr + LCCR); /* (write clear) */
1034 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
1035 mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + CERCR);/* CERCR */
1036 ctrl_outl(0, ioaddr + CERCR); /* (write clear) */
1037 mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + CEECR);/* CEECR */
1038 ctrl_outl(0, ioaddr + CEECR); /* (write clear) */
1039 #else
1040 mdp->stats.tx_carrier_errors += ctrl_inl(ioaddr + CNDCR);
1041 ctrl_outl(0, ioaddr + CNDCR); /* (write clear) */
1042 #endif
1043 return &mdp->stats;
1044 }
1045
1046 /* ioctl to device funciotn*/
1047 static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq,
1048 int cmd)
1049 {
1050 struct sh_eth_private *mdp = netdev_priv(ndev);
1051 struct phy_device *phydev = mdp->phydev;
1052
1053 if (!netif_running(ndev))
1054 return -EINVAL;
1055
1056 if (!phydev)
1057 return -ENODEV;
1058
1059 return phy_mii_ioctl(phydev, if_mii(rq), cmd);
1060 }
1061
1062
1063 /* Multicast reception directions set */
1064 static void sh_eth_set_multicast_list(struct net_device *ndev)
1065 {
1066 u32 ioaddr = ndev->base_addr;
1067
1068 if (ndev->flags & IFF_PROMISC) {
1069 /* Set promiscuous. */
1070 ctrl_outl((ctrl_inl(ioaddr + ECMR) & ~ECMR_MCT) | ECMR_PRM,
1071 ioaddr + ECMR);
1072 } else {
1073 /* Normal, unicast/broadcast-only mode. */
1074 ctrl_outl((ctrl_inl(ioaddr + ECMR) & ~ECMR_PRM) | ECMR_MCT,
1075 ioaddr + ECMR);
1076 }
1077 }
1078
1079 /* SuperH's TSU register init function */
1080 static void sh_eth_tsu_init(u32 ioaddr)
1081 {
1082 ctrl_outl(0, ioaddr + TSU_FWEN0); /* Disable forward(0->1) */
1083 ctrl_outl(0, ioaddr + TSU_FWEN1); /* Disable forward(1->0) */
1084 ctrl_outl(0, ioaddr + TSU_FCM); /* forward fifo 3k-3k */
1085 ctrl_outl(0xc, ioaddr + TSU_BSYSL0);
1086 ctrl_outl(0xc, ioaddr + TSU_BSYSL1);
1087 ctrl_outl(0, ioaddr + TSU_PRISL0);
1088 ctrl_outl(0, ioaddr + TSU_PRISL1);
1089 ctrl_outl(0, ioaddr + TSU_FWSL0);
1090 ctrl_outl(0, ioaddr + TSU_FWSL1);
1091 ctrl_outl(TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, ioaddr + TSU_FWSLC);
1092 #if defined(CONFIG_CPU_SUBTYPE_SH7763)
1093 ctrl_outl(0, ioaddr + TSU_QTAG0); /* Disable QTAG(0->1) */
1094 ctrl_outl(0, ioaddr + TSU_QTAG1); /* Disable QTAG(1->0) */
1095 #else
1096 ctrl_outl(0, ioaddr + TSU_QTAGM0); /* Disable QTAG(0->1) */
1097 ctrl_outl(0, ioaddr + TSU_QTAGM1); /* Disable QTAG(1->0) */
1098 #endif
1099 ctrl_outl(0, ioaddr + TSU_FWSR); /* all interrupt status clear */
1100 ctrl_outl(0, ioaddr + TSU_FWINMK); /* Disable all interrupt */
1101 ctrl_outl(0, ioaddr + TSU_TEN); /* Disable all CAM entry */
1102 ctrl_outl(0, ioaddr + TSU_POST1); /* Disable CAM entry [ 0- 7] */
1103 ctrl_outl(0, ioaddr + TSU_POST2); /* Disable CAM entry [ 8-15] */
1104 ctrl_outl(0, ioaddr + TSU_POST3); /* Disable CAM entry [16-23] */
1105 ctrl_outl(0, ioaddr + TSU_POST4); /* Disable CAM entry [24-31] */
1106 }
1107
1108 /* MDIO bus release function */
1109 static int sh_mdio_release(struct net_device *ndev)
1110 {
1111 struct mii_bus *bus = dev_get_drvdata(&ndev->dev);
1112
1113 /* unregister mdio bus */
1114 mdiobus_unregister(bus);
1115
1116 /* remove mdio bus info from net_device */
1117 dev_set_drvdata(&ndev->dev, NULL);
1118
1119 /* free bitbang info */
1120 free_mdio_bitbang(bus);
1121
1122 return 0;
1123 }
1124
1125 /* MDIO bus init function */
1126 static int sh_mdio_init(struct net_device *ndev, int id)
1127 {
1128 int ret, i;
1129 struct bb_info *bitbang;
1130 struct sh_eth_private *mdp = netdev_priv(ndev);
1131
1132 /* create bit control struct for PHY */
1133 bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
1134 if (!bitbang) {
1135 ret = -ENOMEM;
1136 goto out;
1137 }
1138
1139 /* bitbang init */
1140 bitbang->addr = ndev->base_addr + PIR;
1141 bitbang->mdi_msk = 0x08;
1142 bitbang->mdo_msk = 0x04;
1143 bitbang->mmd_msk = 0x02;/* MMD */
1144 bitbang->mdc_msk = 0x01;
1145 bitbang->ctrl.ops = &bb_ops;
1146
1147 /* MII contorller setting */
1148 mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
1149 if (!mdp->mii_bus) {
1150 ret = -ENOMEM;
1151 goto out_free_bitbang;
1152 }
1153
1154 /* Hook up MII support for ethtool */
1155 mdp->mii_bus->name = "sh_mii";
1156 mdp->mii_bus->parent = &ndev->dev;
1157 snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%x", id);
1158
1159 /* PHY IRQ */
1160 mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
1161 if (!mdp->mii_bus->irq) {
1162 ret = -ENOMEM;
1163 goto out_free_bus;
1164 }
1165
1166 for (i = 0; i < PHY_MAX_ADDR; i++)
1167 mdp->mii_bus->irq[i] = PHY_POLL;
1168
1169 /* regist mdio bus */
1170 ret = mdiobus_register(mdp->mii_bus);
1171 if (ret)
1172 goto out_free_irq;
1173
1174 dev_set_drvdata(&ndev->dev, mdp->mii_bus);
1175
1176 return 0;
1177
1178 out_free_irq:
1179 kfree(mdp->mii_bus->irq);
1180
1181 out_free_bus:
1182 free_mdio_bitbang(mdp->mii_bus);
1183
1184 out_free_bitbang:
1185 kfree(bitbang);
1186
1187 out:
1188 return ret;
1189 }
1190
1191 static const struct net_device_ops sh_eth_netdev_ops = {
1192 .ndo_open = sh_eth_open,
1193 .ndo_stop = sh_eth_close,
1194 .ndo_start_xmit = sh_eth_start_xmit,
1195 .ndo_get_stats = sh_eth_get_stats,
1196 .ndo_set_multicast_list = sh_eth_set_multicast_list,
1197 .ndo_tx_timeout = sh_eth_tx_timeout,
1198 .ndo_do_ioctl = sh_eth_do_ioctl,
1199 .ndo_validate_addr = eth_validate_addr,
1200 .ndo_set_mac_address = eth_mac_addr,
1201 .ndo_change_mtu = eth_change_mtu,
1202 };
1203
1204 static int sh_eth_drv_probe(struct platform_device *pdev)
1205 {
1206 int ret, i, devno = 0;
1207 struct resource *res;
1208 struct net_device *ndev = NULL;
1209 struct sh_eth_private *mdp;
1210 struct sh_eth_plat_data *pd;
1211
1212 /* get base addr */
1213 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1214 if (unlikely(res == NULL)) {
1215 dev_err(&pdev->dev, "invalid resource\n");
1216 ret = -EINVAL;
1217 goto out;
1218 }
1219
1220 ndev = alloc_etherdev(sizeof(struct sh_eth_private));
1221 if (!ndev) {
1222 printk(KERN_ERR "%s: could not allocate device.\n", CARDNAME);
1223 ret = -ENOMEM;
1224 goto out;
1225 }
1226
1227 /* The sh Ether-specific entries in the device structure. */
1228 ndev->base_addr = res->start;
1229 devno = pdev->id;
1230 if (devno < 0)
1231 devno = 0;
1232
1233 ndev->dma = -1;
1234 ret = platform_get_irq(pdev, 0);
1235 if (ret < 0) {
1236 ret = -ENODEV;
1237 goto out_release;
1238 }
1239 ndev->irq = ret;
1240
1241 SET_NETDEV_DEV(ndev, &pdev->dev);
1242
1243 /* Fill in the fields of the device structure with ethernet values. */
1244 ether_setup(ndev);
1245
1246 mdp = netdev_priv(ndev);
1247 spin_lock_init(&mdp->lock);
1248
1249 pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data);
1250 /* get PHY ID */
1251 mdp->phy_id = pd->phy;
1252 /* EDMAC endian */
1253 mdp->edmac_endian = pd->edmac_endian;
1254
1255 /* set function */
1256 ndev->netdev_ops = &sh_eth_netdev_ops;
1257 ndev->watchdog_timeo = TX_TIMEOUT;
1258
1259 mdp->post_rx = POST_RX >> (devno << 1);
1260 mdp->post_fw = POST_FW >> (devno << 1);
1261
1262 /* read and set MAC address */
1263 read_mac_address(ndev);
1264
1265 /* First device only init */
1266 if (!devno) {
1267 #if defined(ARSTR)
1268 /* reset device */
1269 ctrl_outl(ARSTR_ARSTR, ARSTR);
1270 mdelay(1);
1271 #endif
1272
1273 #if defined(SH_TSU_ADDR)
1274 /* TSU init (Init only)*/
1275 sh_eth_tsu_init(SH_TSU_ADDR);
1276 #endif
1277 }
1278
1279 /* network device register */
1280 ret = register_netdev(ndev);
1281 if (ret)
1282 goto out_release;
1283
1284 /* mdio bus init */
1285 ret = sh_mdio_init(ndev, pdev->id);
1286 if (ret)
1287 goto out_unregister;
1288
1289 /* pritnt device infomation */
1290 printk(KERN_INFO "%s: %s at 0x%x, ",
1291 ndev->name, CARDNAME, (u32) ndev->base_addr);
1292
1293 for (i = 0; i < 5; i++)
1294 printk("%02X:", ndev->dev_addr[i]);
1295 printk("%02X, IRQ %d.\n", ndev->dev_addr[i], ndev->irq);
1296
1297 platform_set_drvdata(pdev, ndev);
1298
1299 return ret;
1300
1301 out_unregister:
1302 unregister_netdev(ndev);
1303
1304 out_release:
1305 /* net_dev free */
1306 if (ndev)
1307 free_netdev(ndev);
1308
1309 out:
1310 return ret;
1311 }
1312
1313 static int sh_eth_drv_remove(struct platform_device *pdev)
1314 {
1315 struct net_device *ndev = platform_get_drvdata(pdev);
1316
1317 sh_mdio_release(ndev);
1318 unregister_netdev(ndev);
1319 flush_scheduled_work();
1320
1321 free_netdev(ndev);
1322 platform_set_drvdata(pdev, NULL);
1323
1324 return 0;
1325 }
1326
1327 static struct platform_driver sh_eth_driver = {
1328 .probe = sh_eth_drv_probe,
1329 .remove = sh_eth_drv_remove,
1330 .driver = {
1331 .name = CARDNAME,
1332 },
1333 };
1334
1335 static int __init sh_eth_init(void)
1336 {
1337 return platform_driver_register(&sh_eth_driver);
1338 }
1339
1340 static void __exit sh_eth_cleanup(void)
1341 {
1342 platform_driver_unregister(&sh_eth_driver);
1343 }
1344
1345 module_init(sh_eth_init);
1346 module_exit(sh_eth_cleanup);
1347
1348 MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
1349 MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
1350 MODULE_LICENSE("GPL v2");
Support for the Chinese Samsung S3C2440 based development boards