?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
sfc: Don't use enums as a bitmask.
[zen-stable.git] / drivers / net / sh_eth.c
blob8a72a979ee711262a613ddbe6e0fd3276b6f77d4
1 /*
2 * SuperH Ethernet device driver
3 *
4 * Copyright (C) 2006-2008 Nobuhiro Iwamatsu
5 * Copyright (C) 2008-2009 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 #include <linux/pm_runtime.h>
34 #include <linux/slab.h>
35 #include <linux/ethtool.h>
36 #include <asm/cacheflush.h>
37
38 #include "sh_eth.h"
39
40 #define SH_ETH_DEF_MSG_ENABLE \
41 (NETIF_MSG_LINK | \
42 NETIF_MSG_TIMER | \
43 NETIF_MSG_RX_ERR| \
44 NETIF_MSG_TX_ERR)
45
46 /* There is CPU dependent code */
47 #if defined(CONFIG_CPU_SUBTYPE_SH7724)
48 #define SH_ETH_RESET_DEFAULT 1
49 static void sh_eth_set_duplex(struct net_device *ndev)
50 {
51 struct sh_eth_private *mdp = netdev_priv(ndev);
52
53 if (mdp->duplex) /* Full */
54 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
55 else /* Half */
56 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
57 }
58
59 static void sh_eth_set_rate(struct net_device *ndev)
60 {
61 struct sh_eth_private *mdp = netdev_priv(ndev);
62
63 switch (mdp->speed) {
64 case 10: /* 10BASE */
65 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_RTM, ECMR);
66 break;
67 case 100:/* 100BASE */
68 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_RTM, ECMR);
69 break;
70 default:
71 break;
72 }
73 }
74
75 /* SH7724 */
76 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
77 .set_duplex = sh_eth_set_duplex,
78 .set_rate = sh_eth_set_rate,
79
80 .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
81 .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
82 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f,
83
84 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
85 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
86 EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
87 .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
88
89 .apr = 1,
90 .mpr = 1,
91 .tpauser = 1,
92 .hw_swap = 1,
93 .rpadir = 1,
94 .rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */
95 };
96 #elif defined(CONFIG_CPU_SUBTYPE_SH7757)
97 #define SH_ETH_HAS_BOTH_MODULES 1
98 #define SH_ETH_HAS_TSU 1
99 static void sh_eth_set_duplex(struct net_device *ndev)
100 {
101 struct sh_eth_private *mdp = netdev_priv(ndev);
102
103 if (mdp->duplex) /* Full */
104 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
105 else /* Half */
106 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
107 }
108
109 static void sh_eth_set_rate(struct net_device *ndev)
110 {
111 struct sh_eth_private *mdp = netdev_priv(ndev);
112
113 switch (mdp->speed) {
114 case 10: /* 10BASE */
115 sh_eth_write(ndev, 0, RTRATE);
116 break;
117 case 100:/* 100BASE */
118 sh_eth_write(ndev, 1, RTRATE);
119 break;
120 default:
121 break;
122 }
123 }
124
125 /* SH7757 */
126 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
127 .set_duplex = sh_eth_set_duplex,
128 .set_rate = sh_eth_set_rate,
129
130 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
131 .rmcr_value = 0x00000001,
132
133 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
134 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
135 EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
136 .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
137
138 .apr = 1,
139 .mpr = 1,
140 .tpauser = 1,
141 .hw_swap = 1,
142 .no_ade = 1,
143 };
144
145 #define SH_GIGA_ETH_BASE 0xfee00000
146 #define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
147 #define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
148 static void sh_eth_chip_reset_giga(struct net_device *ndev)
149 {
150 int i;
151 unsigned long mahr[2], malr[2];
152
153 /* save MAHR and MALR */
154 for (i = 0; i < 2; i++) {
155 malr[i] = readl(GIGA_MALR(i));
156 mahr[i] = readl(GIGA_MAHR(i));
157 }
158
159 /* reset device */
160 writel(ARSTR_ARSTR, SH_GIGA_ETH_BASE + 0x1800);
161 mdelay(1);
162
163 /* restore MAHR and MALR */
164 for (i = 0; i < 2; i++) {
165 writel(malr[i], GIGA_MALR(i));
166 writel(mahr[i], GIGA_MAHR(i));
167 }
168 }
169
170 static int sh_eth_is_gether(struct sh_eth_private *mdp);
171 static void sh_eth_reset(struct net_device *ndev)
172 {
173 struct sh_eth_private *mdp = netdev_priv(ndev);
174 int cnt = 100;
175
176 if (sh_eth_is_gether(mdp)) {
177 sh_eth_write(ndev, 0x03, EDSR);
178 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER,
179 EDMR);
180 while (cnt > 0) {
181 if (!(sh_eth_read(ndev, EDMR) & 0x3))
182 break;
183 mdelay(1);
184 cnt--;
185 }
186 if (cnt < 0)
187 printk(KERN_ERR "Device reset fail\n");
188
189 /* Table Init */
190 sh_eth_write(ndev, 0x0, TDLAR);
191 sh_eth_write(ndev, 0x0, TDFAR);
192 sh_eth_write(ndev, 0x0, TDFXR);
193 sh_eth_write(ndev, 0x0, TDFFR);
194 sh_eth_write(ndev, 0x0, RDLAR);
195 sh_eth_write(ndev, 0x0, RDFAR);
196 sh_eth_write(ndev, 0x0, RDFXR);
197 sh_eth_write(ndev, 0x0, RDFFR);
198 } else {
199 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER,
200 EDMR);
201 mdelay(3);
202 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER,
203 EDMR);
204 }
205 }
206
207 static void sh_eth_set_duplex_giga(struct net_device *ndev)
208 {
209 struct sh_eth_private *mdp = netdev_priv(ndev);
210
211 if (mdp->duplex) /* Full */
212 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
213 else /* Half */
214 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
215 }
216
217 static void sh_eth_set_rate_giga(struct net_device *ndev)
218 {
219 struct sh_eth_private *mdp = netdev_priv(ndev);
220
221 switch (mdp->speed) {
222 case 10: /* 10BASE */
223 sh_eth_write(ndev, 0x00000000, GECMR);
224 break;
225 case 100:/* 100BASE */
226 sh_eth_write(ndev, 0x00000010, GECMR);
227 break;
228 case 1000: /* 1000BASE */
229 sh_eth_write(ndev, 0x00000020, GECMR);
230 break;
231 default:
232 break;
233 }
234 }
235
236 /* SH7757(GETHERC) */
237 static struct sh_eth_cpu_data sh_eth_my_cpu_data_giga = {
238 .chip_reset = sh_eth_chip_reset_giga,
239 .set_duplex = sh_eth_set_duplex_giga,
240 .set_rate = sh_eth_set_rate_giga,
241
242 .ecsr_value = ECSR_ICD | ECSR_MPD,
243 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
244 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
245
246 .tx_check = EESR_TC1 | EESR_FTC,
247 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
248 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
249 EESR_ECI,
250 .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
251 EESR_TFE,
252 .fdr_value = 0x0000072f,
253 .rmcr_value = 0x00000001,
254
255 .apr = 1,
256 .mpr = 1,
257 .tpauser = 1,
258 .bculr = 1,
259 .hw_swap = 1,
260 .rpadir = 1,
261 .rpadir_value = 2 << 16,
262 .no_trimd = 1,
263 .no_ade = 1,
264 };
265
266 static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp)
267 {
268 if (sh_eth_is_gether(mdp))
269 return &sh_eth_my_cpu_data_giga;
270 else
271 return &sh_eth_my_cpu_data;
272 }
273
274 #elif defined(CONFIG_CPU_SUBTYPE_SH7763)
275 #define SH_ETH_HAS_TSU 1
276 static void sh_eth_chip_reset(struct net_device *ndev)
277 {
278 struct sh_eth_private *mdp = netdev_priv(ndev);
279
280 /* reset device */
281 sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
282 mdelay(1);
283 }
284
285 static void sh_eth_reset(struct net_device *ndev)
286 {
287 int cnt = 100;
288
289 sh_eth_write(ndev, EDSR_ENALL, EDSR);
290 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR);
291 while (cnt > 0) {
292 if (!(sh_eth_read(ndev, EDMR) & 0x3))
293 break;
294 mdelay(1);
295 cnt--;
296 }
297 if (cnt == 0)
298 printk(KERN_ERR "Device reset fail\n");
299
300 /* Table Init */
301 sh_eth_write(ndev, 0x0, TDLAR);
302 sh_eth_write(ndev, 0x0, TDFAR);
303 sh_eth_write(ndev, 0x0, TDFXR);
304 sh_eth_write(ndev, 0x0, TDFFR);
305 sh_eth_write(ndev, 0x0, RDLAR);
306 sh_eth_write(ndev, 0x0, RDFAR);
307 sh_eth_write(ndev, 0x0, RDFXR);
308 sh_eth_write(ndev, 0x0, RDFFR);
309 }
310
311 static void sh_eth_set_duplex(struct net_device *ndev)
312 {
313 struct sh_eth_private *mdp = netdev_priv(ndev);
314
315 if (mdp->duplex) /* Full */
316 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
317 else /* Half */
318 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
319 }
320
321 static void sh_eth_set_rate(struct net_device *ndev)
322 {
323 struct sh_eth_private *mdp = netdev_priv(ndev);
324
325 switch (mdp->speed) {
326 case 10: /* 10BASE */
327 sh_eth_write(ndev, GECMR_10, GECMR);
328 break;
329 case 100:/* 100BASE */
330 sh_eth_write(ndev, GECMR_100, GECMR);
331 break;
332 case 1000: /* 1000BASE */
333 sh_eth_write(ndev, GECMR_1000, GECMR);
334 break;
335 default:
336 break;
337 }
338 }
339
340 /* sh7763 */
341 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
342 .chip_reset = sh_eth_chip_reset,
343 .set_duplex = sh_eth_set_duplex,
344 .set_rate = sh_eth_set_rate,
345
346 .ecsr_value = ECSR_ICD | ECSR_MPD,
347 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
348 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
349
350 .tx_check = EESR_TC1 | EESR_FTC,
351 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
352 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
353 EESR_ECI,
354 .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
355 EESR_TFE,
356
357 .apr = 1,
358 .mpr = 1,
359 .tpauser = 1,
360 .bculr = 1,
361 .hw_swap = 1,
362 .no_trimd = 1,
363 .no_ade = 1,
364 .tsu = 1,
365 };
366
367 #elif defined(CONFIG_CPU_SUBTYPE_SH7619)
368 #define SH_ETH_RESET_DEFAULT 1
369 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
370 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
371
372 .apr = 1,
373 .mpr = 1,
374 .tpauser = 1,
375 .hw_swap = 1,
376 };
377 #elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
378 #define SH_ETH_RESET_DEFAULT 1
379 #define SH_ETH_HAS_TSU 1
380 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
381 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
382 .tsu = 1,
383 };
384 #endif
385
386 static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
387 {
388 if (!cd->ecsr_value)
389 cd->ecsr_value = DEFAULT_ECSR_INIT;
390
391 if (!cd->ecsipr_value)
392 cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
393
394 if (!cd->fcftr_value)
395 cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \
396 DEFAULT_FIFO_F_D_RFD;
397
398 if (!cd->fdr_value)
399 cd->fdr_value = DEFAULT_FDR_INIT;
400
401 if (!cd->rmcr_value)
402 cd->rmcr_value = DEFAULT_RMCR_VALUE;
403
404 if (!cd->tx_check)
405 cd->tx_check = DEFAULT_TX_CHECK;
406
407 if (!cd->eesr_err_check)
408 cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
409
410 if (!cd->tx_error_check)
411 cd->tx_error_check = DEFAULT_TX_ERROR_CHECK;
412 }
413
414 #if defined(SH_ETH_RESET_DEFAULT)
415 /* Chip Reset */
416 static void sh_eth_reset(struct net_device *ndev)
417 {
418 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, EDMR);
419 mdelay(3);
420 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, EDMR);
421 }
422 #endif
423
424 #if defined(CONFIG_CPU_SH4)
425 static void sh_eth_set_receive_align(struct sk_buff *skb)
426 {
427 int reserve;
428
429 reserve = SH4_SKB_RX_ALIGN - ((u32)skb->data & (SH4_SKB_RX_ALIGN - 1));
430 if (reserve)
431 skb_reserve(skb, reserve);
432 }
433 #else
434 static void sh_eth_set_receive_align(struct sk_buff *skb)
435 {
436 skb_reserve(skb, SH2_SH3_SKB_RX_ALIGN);
437 }
438 #endif
439
440
441 /* CPU <-> EDMAC endian convert */
442 static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x)
443 {
444 switch (mdp->edmac_endian) {
445 case EDMAC_LITTLE_ENDIAN:
446 return cpu_to_le32(x);
447 case EDMAC_BIG_ENDIAN:
448 return cpu_to_be32(x);
449 }
450 return x;
451 }
452
453 static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x)
454 {
455 switch (mdp->edmac_endian) {
456 case EDMAC_LITTLE_ENDIAN:
457 return le32_to_cpu(x);
458 case EDMAC_BIG_ENDIAN:
459 return be32_to_cpu(x);
460 }
461 return x;
462 }
463
464 /*
465 * Program the hardware MAC address from dev->dev_addr.
466 */
467 static void update_mac_address(struct net_device *ndev)
468 {
469 sh_eth_write(ndev,
470 (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
471 (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
472 sh_eth_write(ndev,
473 (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
474 }
475
476 /*
477 * Get MAC address from SuperH MAC address register
478 *
479 * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
480 * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
481 * When you want use this device, you must set MAC address in bootloader.
482 *
483 */
484 static void read_mac_address(struct net_device *ndev, unsigned char *mac)
485 {
486 if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
487 memcpy(ndev->dev_addr, mac, 6);
488 } else {
489 ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24);
490 ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF;
491 ndev->dev_addr[2] = (sh_eth_read(ndev, MAHR) >> 8) & 0xFF;
492 ndev->dev_addr[3] = (sh_eth_read(ndev, MAHR) & 0xFF);
493 ndev->dev_addr[4] = (sh_eth_read(ndev, MALR) >> 8) & 0xFF;
494 ndev->dev_addr[5] = (sh_eth_read(ndev, MALR) & 0xFF);
495 }
496 }
497
498 static int sh_eth_is_gether(struct sh_eth_private *mdp)
499 {
500 if (mdp->reg_offset == sh_eth_offset_gigabit)
501 return 1;
502 else
503 return 0;
504 }
505
506 static unsigned long sh_eth_get_edtrr_trns(struct sh_eth_private *mdp)
507 {
508 if (sh_eth_is_gether(mdp))
509 return EDTRR_TRNS_GETHER;
510 else
511 return EDTRR_TRNS_ETHER;
512 }
513
514 struct bb_info {
515 void (*set_gate)(unsigned long addr);
516 struct mdiobb_ctrl ctrl;
517 u32 addr;
518 u32 mmd_msk;/* MMD */
519 u32 mdo_msk;
520 u32 mdi_msk;
521 u32 mdc_msk;
522 };
523
524 /* PHY bit set */
525 static void bb_set(u32 addr, u32 msk)
526 {
527 writel(readl(addr) | msk, addr);
528 }
529
530 /* PHY bit clear */
531 static void bb_clr(u32 addr, u32 msk)
532 {
533 writel((readl(addr) & ~msk), addr);
534 }
535
536 /* PHY bit read */
537 static int bb_read(u32 addr, u32 msk)
538 {
539 return (readl(addr) & msk) != 0;
540 }
541
542 /* Data I/O pin control */
543 static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
544 {
545 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
546
547 if (bitbang->set_gate)
548 bitbang->set_gate(bitbang->addr);
549
550 if (bit)
551 bb_set(bitbang->addr, bitbang->mmd_msk);
552 else
553 bb_clr(bitbang->addr, bitbang->mmd_msk);
554 }
555
556 /* Set bit data*/
557 static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
558 {
559 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
560
561 if (bitbang->set_gate)
562 bitbang->set_gate(bitbang->addr);
563
564 if (bit)
565 bb_set(bitbang->addr, bitbang->mdo_msk);
566 else
567 bb_clr(bitbang->addr, bitbang->mdo_msk);
568 }
569
570 /* Get bit data*/
571 static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
572 {
573 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
574
575 if (bitbang->set_gate)
576 bitbang->set_gate(bitbang->addr);
577
578 return bb_read(bitbang->addr, bitbang->mdi_msk);
579 }
580
581 /* MDC pin control */
582 static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
583 {
584 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
585
586 if (bitbang->set_gate)
587 bitbang->set_gate(bitbang->addr);
588
589 if (bit)
590 bb_set(bitbang->addr, bitbang->mdc_msk);
591 else
592 bb_clr(bitbang->addr, bitbang->mdc_msk);
593 }
594
595 /* mdio bus control struct */
596 static struct mdiobb_ops bb_ops = {
597 .owner = THIS_MODULE,
598 .set_mdc = sh_mdc_ctrl,
599 .set_mdio_dir = sh_mmd_ctrl,
600 .set_mdio_data = sh_set_mdio,
601 .get_mdio_data = sh_get_mdio,
602 };
603
604 /* free skb and descriptor buffer */
605 static void sh_eth_ring_free(struct net_device *ndev)
606 {
607 struct sh_eth_private *mdp = netdev_priv(ndev);
608 int i;
609
610 /* Free Rx skb ringbuffer */
611 if (mdp->rx_skbuff) {
612 for (i = 0; i < RX_RING_SIZE; i++) {
613 if (mdp->rx_skbuff[i])
614 dev_kfree_skb(mdp->rx_skbuff[i]);
615 }
616 }
617 kfree(mdp->rx_skbuff);
618
619 /* Free Tx skb ringbuffer */
620 if (mdp->tx_skbuff) {
621 for (i = 0; i < TX_RING_SIZE; i++) {
622 if (mdp->tx_skbuff[i])
623 dev_kfree_skb(mdp->tx_skbuff[i]);
624 }
625 }
626 kfree(mdp->tx_skbuff);
627 }
628
629 /* format skb and descriptor buffer */
630 static void sh_eth_ring_format(struct net_device *ndev)
631 {
632 struct sh_eth_private *mdp = netdev_priv(ndev);
633 int i;
634 struct sk_buff *skb;
635 struct sh_eth_rxdesc *rxdesc = NULL;
636 struct sh_eth_txdesc *txdesc = NULL;
637 int rx_ringsize = sizeof(*rxdesc) * RX_RING_SIZE;
638 int tx_ringsize = sizeof(*txdesc) * TX_RING_SIZE;
639
640 mdp->cur_rx = mdp->cur_tx = 0;
641 mdp->dirty_rx = mdp->dirty_tx = 0;
642
643 memset(mdp->rx_ring, 0, rx_ringsize);
644
645 /* build Rx ring buffer */
646 for (i = 0; i < RX_RING_SIZE; i++) {
647 /* skb */
648 mdp->rx_skbuff[i] = NULL;
649 skb = dev_alloc_skb(mdp->rx_buf_sz);
650 mdp->rx_skbuff[i] = skb;
651 if (skb == NULL)
652 break;
653 dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
654 DMA_FROM_DEVICE);
655 skb->dev = ndev; /* Mark as being used by this device. */
656 sh_eth_set_receive_align(skb);
657
658 /* RX descriptor */
659 rxdesc = &mdp->rx_ring[i];
660 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
661 rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);
662
663 /* The size of the buffer is 16 byte boundary. */
664 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
665 /* Rx descriptor address set */
666 if (i == 0) {
667 sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
668 if (sh_eth_is_gether(mdp))
669 sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
670 }
671 }
672
673 mdp->dirty_rx = (u32) (i - RX_RING_SIZE);
674
675 /* Mark the last entry as wrapping the ring. */
676 rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
677
678 memset(mdp->tx_ring, 0, tx_ringsize);
679
680 /* build Tx ring buffer */
681 for (i = 0; i < TX_RING_SIZE; i++) {
682 mdp->tx_skbuff[i] = NULL;
683 txdesc = &mdp->tx_ring[i];
684 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
685 txdesc->buffer_length = 0;
686 if (i == 0) {
687 /* Tx descriptor address set */
688 sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
689 if (sh_eth_is_gether(mdp))
690 sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
691 }
692 }
693
694 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
695 }
696
697 /* Get skb and descriptor buffer */
698 static int sh_eth_ring_init(struct net_device *ndev)
699 {
700 struct sh_eth_private *mdp = netdev_priv(ndev);
701 int rx_ringsize, tx_ringsize, ret = 0;
702
703 /*
704 * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
705 * card needs room to do 8 byte alignment, +2 so we can reserve
706 * the first 2 bytes, and +16 gets room for the status word from the
707 * card.
708 */
709 mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
710 (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
711 if (mdp->cd->rpadir)
712 mdp->rx_buf_sz += NET_IP_ALIGN;
713
714 /* Allocate RX and TX skb rings */
715 mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE,
716 GFP_KERNEL);
717 if (!mdp->rx_skbuff) {
718 dev_err(&ndev->dev, "Cannot allocate Rx skb\n");
719 ret = -ENOMEM;
720 return ret;
721 }
722
723 mdp->tx_skbuff = kmalloc(sizeof(*mdp->tx_skbuff) * TX_RING_SIZE,
724 GFP_KERNEL);
725 if (!mdp->tx_skbuff) {
726 dev_err(&ndev->dev, "Cannot allocate Tx skb\n");
727 ret = -ENOMEM;
728 goto skb_ring_free;
729 }
730
731 /* Allocate all Rx descriptors. */
732 rx_ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
733 mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma,
734 GFP_KERNEL);
735
736 if (!mdp->rx_ring) {
737 dev_err(&ndev->dev, "Cannot allocate Rx Ring (size %d bytes)\n",
738 rx_ringsize);
739 ret = -ENOMEM;
740 goto desc_ring_free;
741 }
742
743 mdp->dirty_rx = 0;
744
745 /* Allocate all Tx descriptors. */
746 tx_ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
747 mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma,
748 GFP_KERNEL);
749 if (!mdp->tx_ring) {
750 dev_err(&ndev->dev, "Cannot allocate Tx Ring (size %d bytes)\n",
751 tx_ringsize);
752 ret = -ENOMEM;
753 goto desc_ring_free;
754 }
755 return ret;
756
757 desc_ring_free:
758 /* free DMA buffer */
759 dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma);
760
761 skb_ring_free:
762 /* Free Rx and Tx skb ring buffer */
763 sh_eth_ring_free(ndev);
764
765 return ret;
766 }
767
768 static int sh_eth_dev_init(struct net_device *ndev)
769 {
770 int ret = 0;
771 struct sh_eth_private *mdp = netdev_priv(ndev);
772 u_int32_t rx_int_var, tx_int_var;
773 u32 val;
774
775 /* Soft Reset */
776 sh_eth_reset(ndev);
777
778 /* Descriptor format */
779 sh_eth_ring_format(ndev);
780 if (mdp->cd->rpadir)
781 sh_eth_write(ndev, mdp->cd->rpadir_value, RPADIR);
782
783 /* all sh_eth int mask */
784 sh_eth_write(ndev, 0, EESIPR);
785
786 #if defined(__LITTLE_ENDIAN__)
787 if (mdp->cd->hw_swap)
788 sh_eth_write(ndev, EDMR_EL, EDMR);
789 else
790 #endif
791 sh_eth_write(ndev, 0, EDMR);
792
793 /* FIFO size set */
794 sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
795 sh_eth_write(ndev, 0, TFTR);
796
797 /* Frame recv control */
798 sh_eth_write(ndev, mdp->cd->rmcr_value, RMCR);
799
800 rx_int_var = mdp->rx_int_var = DESC_I_RINT8 | DESC_I_RINT5;
801 tx_int_var = mdp->tx_int_var = DESC_I_TINT2;
802 sh_eth_write(ndev, rx_int_var | tx_int_var, TRSCER);
803
804 if (mdp->cd->bculr)
805 sh_eth_write(ndev, 0x800, BCULR); /* Burst sycle set */
806
807 sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
808
809 if (!mdp->cd->no_trimd)
810 sh_eth_write(ndev, 0, TRIMD);
811
812 /* Recv frame limit set register */
813 sh_eth_write(ndev, RFLR_VALUE, RFLR);
814
815 sh_eth_write(ndev, sh_eth_read(ndev, EESR), EESR);
816 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
817
818 /* PAUSE Prohibition */
819 val = (sh_eth_read(ndev, ECMR) & ECMR_DM) |
820 ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE;
821
822 sh_eth_write(ndev, val, ECMR);
823
824 if (mdp->cd->set_rate)
825 mdp->cd->set_rate(ndev);
826
827 /* E-MAC Status Register clear */
828 sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
829
830 /* E-MAC Interrupt Enable register */
831 sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
832
833 /* Set MAC address */
834 update_mac_address(ndev);
835
836 /* mask reset */
837 if (mdp->cd->apr)
838 sh_eth_write(ndev, APR_AP, APR);
839 if (mdp->cd->mpr)
840 sh_eth_write(ndev, MPR_MP, MPR);
841 if (mdp->cd->tpauser)
842 sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
843
844 /* Setting the Rx mode will start the Rx process. */
845 sh_eth_write(ndev, EDRRR_R, EDRRR);
846
847 netif_start_queue(ndev);
848
849 return ret;
850 }
851
852 /* free Tx skb function */
853 static int sh_eth_txfree(struct net_device *ndev)
854 {
855 struct sh_eth_private *mdp = netdev_priv(ndev);
856 struct sh_eth_txdesc *txdesc;
857 int freeNum = 0;
858 int entry = 0;
859
860 for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
861 entry = mdp->dirty_tx % TX_RING_SIZE;
862 txdesc = &mdp->tx_ring[entry];
863 if (txdesc->status & cpu_to_edmac(mdp, TD_TACT))
864 break;
865 /* Free the original skb. */
866 if (mdp->tx_skbuff[entry]) {
867 dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
868 mdp->tx_skbuff[entry] = NULL;
869 freeNum++;
870 }
871 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
872 if (entry >= TX_RING_SIZE - 1)
873 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
874
875 mdp->stats.tx_packets++;
876 mdp->stats.tx_bytes += txdesc->buffer_length;
877 }
878 return freeNum;
879 }
880
881 /* Packet receive function */
882 static int sh_eth_rx(struct net_device *ndev)
883 {
884 struct sh_eth_private *mdp = netdev_priv(ndev);
885 struct sh_eth_rxdesc *rxdesc;
886
887 int entry = mdp->cur_rx % RX_RING_SIZE;
888 int boguscnt = (mdp->dirty_rx + RX_RING_SIZE) - mdp->cur_rx;
889 struct sk_buff *skb;
890 u16 pkt_len = 0;
891 u32 desc_status;
892
893 rxdesc = &mdp->rx_ring[entry];
894 while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) {
895 desc_status = edmac_to_cpu(mdp, rxdesc->status);
896 pkt_len = rxdesc->frame_length;
897
898 if (--boguscnt < 0)
899 break;
900
901 if (!(desc_status & RDFEND))
902 mdp->stats.rx_length_errors++;
903
904 if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
905 RD_RFS5 | RD_RFS6 | RD_RFS10)) {
906 mdp->stats.rx_errors++;
907 if (desc_status & RD_RFS1)
908 mdp->stats.rx_crc_errors++;
909 if (desc_status & RD_RFS2)
910 mdp->stats.rx_frame_errors++;
911 if (desc_status & RD_RFS3)
912 mdp->stats.rx_length_errors++;
913 if (desc_status & RD_RFS4)
914 mdp->stats.rx_length_errors++;
915 if (desc_status & RD_RFS6)
916 mdp->stats.rx_missed_errors++;
917 if (desc_status & RD_RFS10)
918 mdp->stats.rx_over_errors++;
919 } else {
920 if (!mdp->cd->hw_swap)
921 sh_eth_soft_swap(
922 phys_to_virt(ALIGN(rxdesc->addr, 4)),
923 pkt_len + 2);
924 skb = mdp->rx_skbuff[entry];
925 mdp->rx_skbuff[entry] = NULL;
926 if (mdp->cd->rpadir)
927 skb_reserve(skb, NET_IP_ALIGN);
928 skb_put(skb, pkt_len);
929 skb->protocol = eth_type_trans(skb, ndev);
930 netif_rx(skb);
931 mdp->stats.rx_packets++;
932 mdp->stats.rx_bytes += pkt_len;
933 }
934 rxdesc->status |= cpu_to_edmac(mdp, RD_RACT);
935 entry = (++mdp->cur_rx) % RX_RING_SIZE;
936 rxdesc = &mdp->rx_ring[entry];
937 }
938
939 /* Refill the Rx ring buffers. */
940 for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
941 entry = mdp->dirty_rx % RX_RING_SIZE;
942 rxdesc = &mdp->rx_ring[entry];
943 /* The size of the buffer is 16 byte boundary. */
944 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
945
946 if (mdp->rx_skbuff[entry] == NULL) {
947 skb = dev_alloc_skb(mdp->rx_buf_sz);
948 mdp->rx_skbuff[entry] = skb;
949 if (skb == NULL)
950 break; /* Better luck next round. */
951 dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
952 DMA_FROM_DEVICE);
953 skb->dev = ndev;
954 sh_eth_set_receive_align(skb);
955
956 skb_checksum_none_assert(skb);
957 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
958 }
959 if (entry >= RX_RING_SIZE - 1)
960 rxdesc->status |=
961 cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL);
962 else
963 rxdesc->status |=
964 cpu_to_edmac(mdp, RD_RACT | RD_RFP);
965 }
966
967 /* Restart Rx engine if stopped. */
968 /* If we don't need to check status, don't. -KDU */
969 if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R))
970 sh_eth_write(ndev, EDRRR_R, EDRRR);
971
972 return 0;
973 }
974
975 static void sh_eth_rcv_snd_disable(struct net_device *ndev)
976 {
977 /* disable tx and rx */
978 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) &
979 ~(ECMR_RE | ECMR_TE), ECMR);
980 }
981
982 static void sh_eth_rcv_snd_enable(struct net_device *ndev)
983 {
984 /* enable tx and rx */
985 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) |
986 (ECMR_RE | ECMR_TE), ECMR);
987 }
988
989 /* error control function */
990 static void sh_eth_error(struct net_device *ndev, int intr_status)
991 {
992 struct sh_eth_private *mdp = netdev_priv(ndev);
993 u32 felic_stat;
994 u32 link_stat;
995 u32 mask;
996
997 if (intr_status & EESR_ECI) {
998 felic_stat = sh_eth_read(ndev, ECSR);
999 sh_eth_write(ndev, felic_stat, ECSR); /* clear int */
1000 if (felic_stat & ECSR_ICD)
1001 mdp->stats.tx_carrier_errors++;
1002 if (felic_stat & ECSR_LCHNG) {
1003 /* Link Changed */
1004 if (mdp->cd->no_psr || mdp->no_ether_link) {
1005 if (mdp->link == PHY_DOWN)
1006 link_stat = 0;
1007 else
1008 link_stat = PHY_ST_LINK;
1009 } else {
1010 link_stat = (sh_eth_read(ndev, PSR));
1011 if (mdp->ether_link_active_low)
1012 link_stat = ~link_stat;
1013 }
1014 if (!(link_stat & PHY_ST_LINK))
1015 sh_eth_rcv_snd_disable(ndev);
1016 else {
1017 /* Link Up */
1018 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) &
1019 ~DMAC_M_ECI, EESIPR);
1020 /*clear int */
1021 sh_eth_write(ndev, sh_eth_read(ndev, ECSR),
1022 ECSR);
1023 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) |
1024 DMAC_M_ECI, EESIPR);
1025 /* enable tx and rx */
1026 sh_eth_rcv_snd_enable(ndev);
1027 }
1028 }
1029 }
1030
1031 if (intr_status & EESR_TWB) {
1032 /* Write buck end. unused write back interrupt */
1033 if (intr_status & EESR_TABT) /* Transmit Abort int */
1034 mdp->stats.tx_aborted_errors++;
1035 if (netif_msg_tx_err(mdp))
1036 dev_err(&ndev->dev, "Transmit Abort\n");
1037 }
1038
1039 if (intr_status & EESR_RABT) {
1040 /* Receive Abort int */
1041 if (intr_status & EESR_RFRMER) {
1042 /* Receive Frame Overflow int */
1043 mdp->stats.rx_frame_errors++;
1044 if (netif_msg_rx_err(mdp))
1045 dev_err(&ndev->dev, "Receive Abort\n");
1046 }
1047 }
1048
1049 if (intr_status & EESR_TDE) {
1050 /* Transmit Descriptor Empty int */
1051 mdp->stats.tx_fifo_errors++;
1052 if (netif_msg_tx_err(mdp))
1053 dev_err(&ndev->dev, "Transmit Descriptor Empty\n");
1054 }
1055
1056 if (intr_status & EESR_TFE) {
1057 /* FIFO under flow */
1058 mdp->stats.tx_fifo_errors++;
1059 if (netif_msg_tx_err(mdp))
1060 dev_err(&ndev->dev, "Transmit FIFO Under flow\n");
1061 }
1062
1063 if (intr_status & EESR_RDE) {
1064 /* Receive Descriptor Empty int */
1065 mdp->stats.rx_over_errors++;
1066
1067 if (sh_eth_read(ndev, EDRRR) ^ EDRRR_R)
1068 sh_eth_write(ndev, EDRRR_R, EDRRR);
1069 if (netif_msg_rx_err(mdp))
1070 dev_err(&ndev->dev, "Receive Descriptor Empty\n");
1071 }
1072
1073 if (intr_status & EESR_RFE) {
1074 /* Receive FIFO Overflow int */
1075 mdp->stats.rx_fifo_errors++;
1076 if (netif_msg_rx_err(mdp))
1077 dev_err(&ndev->dev, "Receive FIFO Overflow\n");
1078 }
1079
1080 if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
1081 /* Address Error */
1082 mdp->stats.tx_fifo_errors++;
1083 if (netif_msg_tx_err(mdp))
1084 dev_err(&ndev->dev, "Address Error\n");
1085 }
1086
1087 mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
1088 if (mdp->cd->no_ade)
1089 mask &= ~EESR_ADE;
1090 if (intr_status & mask) {
1091 /* Tx error */
1092 u32 edtrr = sh_eth_read(ndev, EDTRR);
1093 /* dmesg */
1094 dev_err(&ndev->dev, "TX error. status=%8.8x cur_tx=%8.8x ",
1095 intr_status, mdp->cur_tx);
1096 dev_err(&ndev->dev, "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
1097 mdp->dirty_tx, (u32) ndev->state, edtrr);
1098 /* dirty buffer free */
1099 sh_eth_txfree(ndev);
1100
1101 /* SH7712 BUG */
1102 if (edtrr ^ sh_eth_get_edtrr_trns(mdp)) {
1103 /* tx dma start */
1104 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
1105 }
1106 /* wakeup */
1107 netif_wake_queue(ndev);
1108 }
1109 }
1110
1111 static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
1112 {
1113 struct net_device *ndev = netdev;
1114 struct sh_eth_private *mdp = netdev_priv(ndev);
1115 struct sh_eth_cpu_data *cd = mdp->cd;
1116 irqreturn_t ret = IRQ_NONE;
1117 u32 intr_status = 0;
1118
1119 spin_lock(&mdp->lock);
1120
1121 /* Get interrpt stat */
1122 intr_status = sh_eth_read(ndev, EESR);
1123 /* Clear interrupt */
1124 if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF |
1125 EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF |
1126 cd->tx_check | cd->eesr_err_check)) {
1127 sh_eth_write(ndev, intr_status, EESR);
1128 ret = IRQ_HANDLED;
1129 } else
1130 goto other_irq;
1131
1132 if (intr_status & (EESR_FRC | /* Frame recv*/
1133 EESR_RMAF | /* Multi cast address recv*/
1134 EESR_RRF | /* Bit frame recv */
1135 EESR_RTLF | /* Long frame recv*/
1136 EESR_RTSF | /* short frame recv */
1137 EESR_PRE | /* PHY-LSI recv error */
1138 EESR_CERF)){ /* recv frame CRC error */
1139 sh_eth_rx(ndev);
1140 }
1141
1142 /* Tx Check */
1143 if (intr_status & cd->tx_check) {
1144 sh_eth_txfree(ndev);
1145 netif_wake_queue(ndev);
1146 }
1147
1148 if (intr_status & cd->eesr_err_check)
1149 sh_eth_error(ndev, intr_status);
1150
1151 other_irq:
1152 spin_unlock(&mdp->lock);
1153
1154 return ret;
1155 }
1156
1157 static void sh_eth_timer(unsigned long data)
1158 {
1159 struct net_device *ndev = (struct net_device *)data;
1160 struct sh_eth_private *mdp = netdev_priv(ndev);
1161
1162 mod_timer(&mdp->timer, jiffies + (10 * HZ));
1163 }
1164
1165 /* PHY state control function */
1166 static void sh_eth_adjust_link(struct net_device *ndev)
1167 {
1168 struct sh_eth_private *mdp = netdev_priv(ndev);
1169 struct phy_device *phydev = mdp->phydev;
1170 int new_state = 0;
1171
1172 if (phydev->link != PHY_DOWN) {
1173 if (phydev->duplex != mdp->duplex) {
1174 new_state = 1;
1175 mdp->duplex = phydev->duplex;
1176 if (mdp->cd->set_duplex)
1177 mdp->cd->set_duplex(ndev);
1178 }
1179
1180 if (phydev->speed != mdp->speed) {
1181 new_state = 1;
1182 mdp->speed = phydev->speed;
1183 if (mdp->cd->set_rate)
1184 mdp->cd->set_rate(ndev);
1185 }
1186 if (mdp->link == PHY_DOWN) {
1187 sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_TXF)
1188 | ECMR_DM, ECMR);
1189 new_state = 1;
1190 mdp->link = phydev->link;
1191 }
1192 } else if (mdp->link) {
1193 new_state = 1;
1194 mdp->link = PHY_DOWN;
1195 mdp->speed = 0;
1196 mdp->duplex = -1;
1197 }
1198
1199 if (new_state && netif_msg_link(mdp))
1200 phy_print_status(phydev);
1201 }
1202
1203 /* PHY init function */
1204 static int sh_eth_phy_init(struct net_device *ndev)
1205 {
1206 struct sh_eth_private *mdp = netdev_priv(ndev);
1207 char phy_id[MII_BUS_ID_SIZE + 3];
1208 struct phy_device *phydev = NULL;
1209
1210 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
1211 mdp->mii_bus->id , mdp->phy_id);
1212
1213 mdp->link = PHY_DOWN;
1214 mdp->speed = 0;
1215 mdp->duplex = -1;
1216
1217 /* Try connect to PHY */
1218 phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
1219 0, mdp->phy_interface);
1220 if (IS_ERR(phydev)) {
1221 dev_err(&ndev->dev, "phy_connect failed\n");
1222 return PTR_ERR(phydev);
1223 }
1224
1225 dev_info(&ndev->dev, "attached phy %i to driver %s\n",
1226 phydev->addr, phydev->drv->name);
1227
1228 mdp->phydev = phydev;
1229
1230 return 0;
1231 }
1232
1233 /* PHY control start function */
1234 static int sh_eth_phy_start(struct net_device *ndev)
1235 {
1236 struct sh_eth_private *mdp = netdev_priv(ndev);
1237 int ret;
1238
1239 ret = sh_eth_phy_init(ndev);
1240 if (ret)
1241 return ret;
1242
1243 /* reset phy - this also wakes it from PDOWN */
1244 phy_write(mdp->phydev, MII_BMCR, BMCR_RESET);
1245 phy_start(mdp->phydev);
1246
1247 return 0;
1248 }
1249
1250 static int sh_eth_get_settings(struct net_device *ndev,
1251 struct ethtool_cmd *ecmd)
1252 {
1253 struct sh_eth_private *mdp = netdev_priv(ndev);
1254 unsigned long flags;
1255 int ret;
1256
1257 spin_lock_irqsave(&mdp->lock, flags);
1258 ret = phy_ethtool_gset(mdp->phydev, ecmd);
1259 spin_unlock_irqrestore(&mdp->lock, flags);
1260
1261 return ret;
1262 }
1263
1264 static int sh_eth_set_settings(struct net_device *ndev,
1265 struct ethtool_cmd *ecmd)
1266 {
1267 struct sh_eth_private *mdp = netdev_priv(ndev);
1268 unsigned long flags;
1269 int ret;
1270
1271 spin_lock_irqsave(&mdp->lock, flags);
1272
1273 /* disable tx and rx */
1274 sh_eth_rcv_snd_disable(ndev);
1275
1276 ret = phy_ethtool_sset(mdp->phydev, ecmd);
1277 if (ret)
1278 goto error_exit;
1279
1280 if (ecmd->duplex == DUPLEX_FULL)
1281 mdp->duplex = 1;
1282 else
1283 mdp->duplex = 0;
1284
1285 if (mdp->cd->set_duplex)
1286 mdp->cd->set_duplex(ndev);
1287
1288 error_exit:
1289 mdelay(1);
1290
1291 /* enable tx and rx */
1292 sh_eth_rcv_snd_enable(ndev);
1293
1294 spin_unlock_irqrestore(&mdp->lock, flags);
1295
1296 return ret;
1297 }
1298
1299 static int sh_eth_nway_reset(struct net_device *ndev)
1300 {
1301 struct sh_eth_private *mdp = netdev_priv(ndev);
1302 unsigned long flags;
1303 int ret;
1304
1305 spin_lock_irqsave(&mdp->lock, flags);
1306 ret = phy_start_aneg(mdp->phydev);
1307 spin_unlock_irqrestore(&mdp->lock, flags);
1308
1309 return ret;
1310 }
1311
1312 static u32 sh_eth_get_msglevel(struct net_device *ndev)
1313 {
1314 struct sh_eth_private *mdp = netdev_priv(ndev);
1315 return mdp->msg_enable;
1316 }
1317
1318 static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
1319 {
1320 struct sh_eth_private *mdp = netdev_priv(ndev);
1321 mdp->msg_enable = value;
1322 }
1323
1324 static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
1325 "rx_current", "tx_current",
1326 "rx_dirty", "tx_dirty",
1327 };
1328 #define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats)
1329
1330 static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
1331 {
1332 switch (sset) {
1333 case ETH_SS_STATS:
1334 return SH_ETH_STATS_LEN;
1335 default:
1336 return -EOPNOTSUPP;
1337 }
1338 }
1339
1340 static void sh_eth_get_ethtool_stats(struct net_device *ndev,
1341 struct ethtool_stats *stats, u64 *data)
1342 {
1343 struct sh_eth_private *mdp = netdev_priv(ndev);
1344 int i = 0;
1345
1346 /* device-specific stats */
1347 data[i++] = mdp->cur_rx;
1348 data[i++] = mdp->cur_tx;
1349 data[i++] = mdp->dirty_rx;
1350 data[i++] = mdp->dirty_tx;
1351 }
1352
1353 static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1354 {
1355 switch (stringset) {
1356 case ETH_SS_STATS:
1357 memcpy(data, *sh_eth_gstrings_stats,
1358 sizeof(sh_eth_gstrings_stats));
1359 break;
1360 }
1361 }
1362
1363 static struct ethtool_ops sh_eth_ethtool_ops = {
1364 .get_settings = sh_eth_get_settings,
1365 .set_settings = sh_eth_set_settings,
1366 .nway_reset = sh_eth_nway_reset,
1367 .get_msglevel = sh_eth_get_msglevel,
1368 .set_msglevel = sh_eth_set_msglevel,
1369 .get_link = ethtool_op_get_link,
1370 .get_strings = sh_eth_get_strings,
1371 .get_ethtool_stats = sh_eth_get_ethtool_stats,
1372 .get_sset_count = sh_eth_get_sset_count,
1373 };
1374
1375 /* network device open function */
1376 static int sh_eth_open(struct net_device *ndev)
1377 {
1378 int ret = 0;
1379 struct sh_eth_private *mdp = netdev_priv(ndev);
1380
1381 pm_runtime_get_sync(&mdp->pdev->dev);
1382
1383 ret = request_irq(ndev->irq, sh_eth_interrupt,
1384 #if defined(CONFIG_CPU_SUBTYPE_SH7763) || \
1385 defined(CONFIG_CPU_SUBTYPE_SH7764) || \
1386 defined(CONFIG_CPU_SUBTYPE_SH7757)
1387 IRQF_SHARED,
1388 #else
1389 0,
1390 #endif
1391 ndev->name, ndev);
1392 if (ret) {
1393 dev_err(&ndev->dev, "Can not assign IRQ number\n");
1394 return ret;
1395 }
1396
1397 /* Descriptor set */
1398 ret = sh_eth_ring_init(ndev);
1399 if (ret)
1400 goto out_free_irq;
1401
1402 /* device init */
1403 ret = sh_eth_dev_init(ndev);
1404 if (ret)
1405 goto out_free_irq;
1406
1407 /* PHY control start*/
1408 ret = sh_eth_phy_start(ndev);
1409 if (ret)
1410 goto out_free_irq;
1411
1412 /* Set the timer to check for link beat. */
1413 init_timer(&mdp->timer);
1414 mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
1415 setup_timer(&mdp->timer, sh_eth_timer, (unsigned long)ndev);
1416
1417 return ret;
1418
1419 out_free_irq:
1420 free_irq(ndev->irq, ndev);
1421 pm_runtime_put_sync(&mdp->pdev->dev);
1422 return ret;
1423 }
1424
1425 /* Timeout function */
1426 static void sh_eth_tx_timeout(struct net_device *ndev)
1427 {
1428 struct sh_eth_private *mdp = netdev_priv(ndev);
1429 struct sh_eth_rxdesc *rxdesc;
1430 int i;
1431
1432 netif_stop_queue(ndev);
1433
1434 if (netif_msg_timer(mdp))
1435 dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x,"
1436 " resetting...\n", ndev->name, (int)sh_eth_read(ndev, EESR));
1437
1438 /* tx_errors count up */
1439 mdp->stats.tx_errors++;
1440
1441 /* timer off */
1442 del_timer_sync(&mdp->timer);
1443
1444 /* Free all the skbuffs in the Rx queue. */
1445 for (i = 0; i < RX_RING_SIZE; i++) {
1446 rxdesc = &mdp->rx_ring[i];
1447 rxdesc->status = 0;
1448 rxdesc->addr = 0xBADF00D0;
1449 if (mdp->rx_skbuff[i])
1450 dev_kfree_skb(mdp->rx_skbuff[i]);
1451 mdp->rx_skbuff[i] = NULL;
1452 }
1453 for (i = 0; i < TX_RING_SIZE; i++) {
1454 if (mdp->tx_skbuff[i])
1455 dev_kfree_skb(mdp->tx_skbuff[i]);
1456 mdp->tx_skbuff[i] = NULL;
1457 }
1458
1459 /* device init */
1460 sh_eth_dev_init(ndev);
1461
1462 /* timer on */
1463 mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
1464 add_timer(&mdp->timer);
1465 }
1466
1467 /* Packet transmit function */
1468 static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
1469 {
1470 struct sh_eth_private *mdp = netdev_priv(ndev);
1471 struct sh_eth_txdesc *txdesc;
1472 u32 entry;
1473 unsigned long flags;
1474
1475 spin_lock_irqsave(&mdp->lock, flags);
1476 if ((mdp->cur_tx - mdp->dirty_tx) >= (TX_RING_SIZE - 4)) {
1477 if (!sh_eth_txfree(ndev)) {
1478 if (netif_msg_tx_queued(mdp))
1479 dev_warn(&ndev->dev, "TxFD exhausted.\n");
1480 netif_stop_queue(ndev);
1481 spin_unlock_irqrestore(&mdp->lock, flags);
1482 return NETDEV_TX_BUSY;
1483 }
1484 }
1485 spin_unlock_irqrestore(&mdp->lock, flags);
1486
1487 entry = mdp->cur_tx % TX_RING_SIZE;
1488 mdp->tx_skbuff[entry] = skb;
1489 txdesc = &mdp->tx_ring[entry];
1490 txdesc->addr = virt_to_phys(skb->data);
1491 /* soft swap. */
1492 if (!mdp->cd->hw_swap)
1493 sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)),
1494 skb->len + 2);
1495 /* write back */
1496 __flush_purge_region(skb->data, skb->len);
1497 if (skb->len < ETHERSMALL)
1498 txdesc->buffer_length = ETHERSMALL;
1499 else
1500 txdesc->buffer_length = skb->len;
1501
1502 if (entry >= TX_RING_SIZE - 1)
1503 txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE);
1504 else
1505 txdesc->status |= cpu_to_edmac(mdp, TD_TACT);
1506
1507 mdp->cur_tx++;
1508
1509 if (!(sh_eth_read(ndev, EDTRR) & sh_eth_get_edtrr_trns(mdp)))
1510 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
1511
1512 return NETDEV_TX_OK;
1513 }
1514
1515 /* device close function */
1516 static int sh_eth_close(struct net_device *ndev)
1517 {
1518 struct sh_eth_private *mdp = netdev_priv(ndev);
1519 int ringsize;
1520
1521 netif_stop_queue(ndev);
1522
1523 /* Disable interrupts by clearing the interrupt mask. */
1524 sh_eth_write(ndev, 0x0000, EESIPR);
1525
1526 /* Stop the chip's Tx and Rx processes. */
1527 sh_eth_write(ndev, 0, EDTRR);
1528 sh_eth_write(ndev, 0, EDRRR);
1529
1530 /* PHY Disconnect */
1531 if (mdp->phydev) {
1532 phy_stop(mdp->phydev);
1533 phy_disconnect(mdp->phydev);
1534 }
1535
1536 free_irq(ndev->irq, ndev);
1537
1538 del_timer_sync(&mdp->timer);
1539
1540 /* Free all the skbuffs in the Rx queue. */
1541 sh_eth_ring_free(ndev);
1542
1543 /* free DMA buffer */
1544 ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
1545 dma_free_coherent(NULL, ringsize, mdp->rx_ring, mdp->rx_desc_dma);
1546
1547 /* free DMA buffer */
1548 ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
1549 dma_free_coherent(NULL, ringsize, mdp->tx_ring, mdp->tx_desc_dma);
1550
1551 pm_runtime_put_sync(&mdp->pdev->dev);
1552
1553 return 0;
1554 }
1555
1556 static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
1557 {
1558 struct sh_eth_private *mdp = netdev_priv(ndev);
1559
1560 pm_runtime_get_sync(&mdp->pdev->dev);
1561
1562 mdp->stats.tx_dropped += sh_eth_read(ndev, TROCR);
1563 sh_eth_write(ndev, 0, TROCR); /* (write clear) */
1564 mdp->stats.collisions += sh_eth_read(ndev, CDCR);
1565 sh_eth_write(ndev, 0, CDCR); /* (write clear) */
1566 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR);
1567 sh_eth_write(ndev, 0, LCCR); /* (write clear) */
1568 if (sh_eth_is_gether(mdp)) {
1569 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR);
1570 sh_eth_write(ndev, 0, CERCR); /* (write clear) */
1571 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR);
1572 sh_eth_write(ndev, 0, CEECR); /* (write clear) */
1573 } else {
1574 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CNDCR);
1575 sh_eth_write(ndev, 0, CNDCR); /* (write clear) */
1576 }
1577 pm_runtime_put_sync(&mdp->pdev->dev);
1578
1579 return &mdp->stats;
1580 }
1581
1582 /* ioctl to device funciotn*/
1583 static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq,
1584 int cmd)
1585 {
1586 struct sh_eth_private *mdp = netdev_priv(ndev);
1587 struct phy_device *phydev = mdp->phydev;
1588
1589 if (!netif_running(ndev))
1590 return -EINVAL;
1591
1592 if (!phydev)
1593 return -ENODEV;
1594
1595 return phy_mii_ioctl(phydev, rq, cmd);
1596 }
1597
1598 #if defined(SH_ETH_HAS_TSU)
1599 /* Multicast reception directions set */
1600 static void sh_eth_set_multicast_list(struct net_device *ndev)
1601 {
1602 if (ndev->flags & IFF_PROMISC) {
1603 /* Set promiscuous. */
1604 sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_MCT) |
1605 ECMR_PRM, ECMR);
1606 } else {
1607 /* Normal, unicast/broadcast-only mode. */
1608 sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) |
1609 ECMR_MCT, ECMR);
1610 }
1611 }
1612 #endif /* SH_ETH_HAS_TSU */
1613
1614 /* SuperH's TSU register init function */
1615 static void sh_eth_tsu_init(struct sh_eth_private *mdp)
1616 {
1617 sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */
1618 sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */
1619 sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */
1620 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
1621 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
1622 sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
1623 sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
1624 sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
1625 sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
1626 sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
1627 if (sh_eth_is_gether(mdp)) {
1628 sh_eth_tsu_write(mdp, 0, TSU_QTAG0); /* Disable QTAG(0->1) */
1629 sh_eth_tsu_write(mdp, 0, TSU_QTAG1); /* Disable QTAG(1->0) */
1630 } else {
1631 sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */
1632 sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */
1633 }
1634 sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */
1635 sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */
1636 sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
1637 sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */
1638 sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */
1639 sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */
1640 sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */
1641 }
1642
1643 /* MDIO bus release function */
1644 static int sh_mdio_release(struct net_device *ndev)
1645 {
1646 struct mii_bus *bus = dev_get_drvdata(&ndev->dev);
1647
1648 /* unregister mdio bus */
1649 mdiobus_unregister(bus);
1650
1651 /* remove mdio bus info from net_device */
1652 dev_set_drvdata(&ndev->dev, NULL);
1653
1654 /* free interrupts memory */
1655 kfree(bus->irq);
1656
1657 /* free bitbang info */
1658 free_mdio_bitbang(bus);
1659
1660 return 0;
1661 }
1662
1663 /* MDIO bus init function */
1664 static int sh_mdio_init(struct net_device *ndev, int id,
1665 struct sh_eth_plat_data *pd)
1666 {
1667 int ret, i;
1668 struct bb_info *bitbang;
1669 struct sh_eth_private *mdp = netdev_priv(ndev);
1670
1671 /* create bit control struct for PHY */
1672 bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
1673 if (!bitbang) {
1674 ret = -ENOMEM;
1675 goto out;
1676 }
1677
1678 /* bitbang init */
1679 bitbang->addr = ndev->base_addr + mdp->reg_offset[PIR];
1680 bitbang->set_gate = pd->set_mdio_gate;
1681 bitbang->mdi_msk = 0x08;
1682 bitbang->mdo_msk = 0x04;
1683 bitbang->mmd_msk = 0x02;/* MMD */
1684 bitbang->mdc_msk = 0x01;
1685 bitbang->ctrl.ops = &bb_ops;
1686
1687 /* MII controller setting */
1688 mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
1689 if (!mdp->mii_bus) {
1690 ret = -ENOMEM;
1691 goto out_free_bitbang;
1692 }
1693
1694 /* Hook up MII support for ethtool */
1695 mdp->mii_bus->name = "sh_mii";
1696 mdp->mii_bus->parent = &ndev->dev;
1697 snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%x", id);
1698
1699 /* PHY IRQ */
1700 mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
1701 if (!mdp->mii_bus->irq) {
1702 ret = -ENOMEM;
1703 goto out_free_bus;
1704 }
1705
1706 for (i = 0; i < PHY_MAX_ADDR; i++)
1707 mdp->mii_bus->irq[i] = PHY_POLL;
1708
1709 /* regist mdio bus */
1710 ret = mdiobus_register(mdp->mii_bus);
1711 if (ret)
1712 goto out_free_irq;
1713
1714 dev_set_drvdata(&ndev->dev, mdp->mii_bus);
1715
1716 return 0;
1717
1718 out_free_irq:
1719 kfree(mdp->mii_bus->irq);
1720
1721 out_free_bus:
1722 free_mdio_bitbang(mdp->mii_bus);
1723
1724 out_free_bitbang:
1725 kfree(bitbang);
1726
1727 out:
1728 return ret;
1729 }
1730
1731 static const u16 *sh_eth_get_register_offset(int register_type)
1732 {
1733 const u16 *reg_offset = NULL;
1734
1735 switch (register_type) {
1736 case SH_ETH_REG_GIGABIT:
1737 reg_offset = sh_eth_offset_gigabit;
1738 break;
1739 case SH_ETH_REG_FAST_SH4:
1740 reg_offset = sh_eth_offset_fast_sh4;
1741 break;
1742 case SH_ETH_REG_FAST_SH3_SH2:
1743 reg_offset = sh_eth_offset_fast_sh3_sh2;
1744 break;
1745 default:
1746 printk(KERN_ERR "Unknown register type (%d)\n", register_type);
1747 break;
1748 }
1749
1750 return reg_offset;
1751 }
1752
1753 static const struct net_device_ops sh_eth_netdev_ops = {
1754 .ndo_open = sh_eth_open,
1755 .ndo_stop = sh_eth_close,
1756 .ndo_start_xmit = sh_eth_start_xmit,
1757 .ndo_get_stats = sh_eth_get_stats,
1758 #if defined(SH_ETH_HAS_TSU)
1759 .ndo_set_multicast_list = sh_eth_set_multicast_list,
1760 #endif
1761 .ndo_tx_timeout = sh_eth_tx_timeout,
1762 .ndo_do_ioctl = sh_eth_do_ioctl,
1763 .ndo_validate_addr = eth_validate_addr,
1764 .ndo_set_mac_address = eth_mac_addr,
1765 .ndo_change_mtu = eth_change_mtu,
1766 };
1767
1768 static int sh_eth_drv_probe(struct platform_device *pdev)
1769 {
1770 int ret, devno = 0;
1771 struct resource *res;
1772 struct net_device *ndev = NULL;
1773 struct sh_eth_private *mdp;
1774 struct sh_eth_plat_data *pd;
1775
1776 /* get base addr */
1777 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1778 if (unlikely(res == NULL)) {
1779 dev_err(&pdev->dev, "invalid resource\n");
1780 ret = -EINVAL;
1781 goto out;
1782 }
1783
1784 ndev = alloc_etherdev(sizeof(struct sh_eth_private));
1785 if (!ndev) {
1786 dev_err(&pdev->dev, "Could not allocate device.\n");
1787 ret = -ENOMEM;
1788 goto out;
1789 }
1790
1791 /* The sh Ether-specific entries in the device structure. */
1792 ndev->base_addr = res->start;
1793 devno = pdev->id;
1794 if (devno < 0)
1795 devno = 0;
1796
1797 ndev->dma = -1;
1798 ret = platform_get_irq(pdev, 0);
1799 if (ret < 0) {
1800 ret = -ENODEV;
1801 goto out_release;
1802 }
1803 ndev->irq = ret;
1804
1805 SET_NETDEV_DEV(ndev, &pdev->dev);
1806
1807 /* Fill in the fields of the device structure with ethernet values. */
1808 ether_setup(ndev);
1809
1810 mdp = netdev_priv(ndev);
1811 spin_lock_init(&mdp->lock);
1812 mdp->pdev = pdev;
1813 pm_runtime_enable(&pdev->dev);
1814 pm_runtime_resume(&pdev->dev);
1815
1816 pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data);
1817 /* get PHY ID */
1818 mdp->phy_id = pd->phy;
1819 mdp->phy_interface = pd->phy_interface;
1820 /* EDMAC endian */
1821 mdp->edmac_endian = pd->edmac_endian;
1822 mdp->no_ether_link = pd->no_ether_link;
1823 mdp->ether_link_active_low = pd->ether_link_active_low;
1824 mdp->reg_offset = sh_eth_get_register_offset(pd->register_type);
1825
1826 /* set cpu data */
1827 #if defined(SH_ETH_HAS_BOTH_MODULES)
1828 mdp->cd = sh_eth_get_cpu_data(mdp);
1829 #else
1830 mdp->cd = &sh_eth_my_cpu_data;
1831 #endif
1832 sh_eth_set_default_cpu_data(mdp->cd);
1833
1834 /* set function */
1835 ndev->netdev_ops = &sh_eth_netdev_ops;
1836 SET_ETHTOOL_OPS(ndev, &sh_eth_ethtool_ops);
1837 ndev->watchdog_timeo = TX_TIMEOUT;
1838
1839 /* debug message level */
1840 mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
1841 mdp->post_rx = POST_RX >> (devno << 1);
1842 mdp->post_fw = POST_FW >> (devno << 1);
1843
1844 /* read and set MAC address */
1845 read_mac_address(ndev, pd->mac_addr);
1846
1847 /* First device only init */
1848 if (!devno) {
1849 if (mdp->cd->tsu) {
1850 struct resource *rtsu;
1851 rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1852 if (!rtsu) {
1853 dev_err(&pdev->dev, "Not found TSU resource\n");
1854 goto out_release;
1855 }
1856 mdp->tsu_addr = ioremap(rtsu->start,
1857 resource_size(rtsu));
1858 }
1859 if (mdp->cd->chip_reset)
1860 mdp->cd->chip_reset(ndev);
1861
1862 if (mdp->cd->tsu) {
1863 /* TSU init (Init only)*/
1864 sh_eth_tsu_init(mdp);
1865 }
1866 }
1867
1868 /* network device register */
1869 ret = register_netdev(ndev);
1870 if (ret)
1871 goto out_release;
1872
1873 /* mdio bus init */
1874 ret = sh_mdio_init(ndev, pdev->id, pd);
1875 if (ret)
1876 goto out_unregister;
1877
1878 /* print device information */
1879 pr_info("Base address at 0x%x, %pM, IRQ %d.\n",
1880 (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
1881
1882 platform_set_drvdata(pdev, ndev);
1883
1884 return ret;
1885
1886 out_unregister:
1887 unregister_netdev(ndev);
1888
1889 out_release:
1890 /* net_dev free */
1891 if (mdp->tsu_addr)
1892 iounmap(mdp->tsu_addr);
1893 if (ndev)
1894 free_netdev(ndev);
1895
1896 out:
1897 return ret;
1898 }
1899
1900 static int sh_eth_drv_remove(struct platform_device *pdev)
1901 {
1902 struct net_device *ndev = platform_get_drvdata(pdev);
1903 struct sh_eth_private *mdp = netdev_priv(ndev);
1904
1905 iounmap(mdp->tsu_addr);
1906 sh_mdio_release(ndev);
1907 unregister_netdev(ndev);
1908 pm_runtime_disable(&pdev->dev);
1909 free_netdev(ndev);
1910 platform_set_drvdata(pdev, NULL);
1911
1912 return 0;
1913 }
1914
1915 static int sh_eth_runtime_nop(struct device *dev)
1916 {
1917 /*
1918 * Runtime PM callback shared between ->runtime_suspend()
1919 * and ->runtime_resume(). Simply returns success.
1920 *
1921 * This driver re-initializes all registers after
1922 * pm_runtime_get_sync() anyway so there is no need
1923 * to save and restore registers here.
1924 */
1925 return 0;
1926 }
1927
1928 static struct dev_pm_ops sh_eth_dev_pm_ops = {
1929 .runtime_suspend = sh_eth_runtime_nop,
1930 .runtime_resume = sh_eth_runtime_nop,
1931 };
1932
1933 static struct platform_driver sh_eth_driver = {
1934 .probe = sh_eth_drv_probe,
1935 .remove = sh_eth_drv_remove,
1936 .driver = {
1937 .name = CARDNAME,
1938 .pm = &sh_eth_dev_pm_ops,
1939 },
1940 };
1941
1942 static int __init sh_eth_init(void)
1943 {
1944 return platform_driver_register(&sh_eth_driver);
1945 }
1946
1947 static void __exit sh_eth_cleanup(void)
1948 {
1949 platform_driver_unregister(&sh_eth_driver);
1950 }
1951
1952 module_init(sh_eth_init);
1953 module_exit(sh_eth_cleanup);
1954
1955 MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
1956 MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
1957 MODULE_LICENSE("GPL v2");