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Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux...
[linux-2.6/x86.git] / drivers / net / sh_eth.c
blobad35c210b839b950726960144ac1da72a43833cc
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
37 #include "sh_eth.h"
38
39 #define SH_ETH_DEF_MSG_ENABLE \
40 (NETIF_MSG_LINK | \
41 NETIF_MSG_TIMER | \
42 NETIF_MSG_RX_ERR| \
43 NETIF_MSG_TX_ERR)
44
45 /* There is CPU dependent code */
46 #if defined(CONFIG_CPU_SUBTYPE_SH7724)
47 #define SH_ETH_RESET_DEFAULT 1
48 static void sh_eth_set_duplex(struct net_device *ndev)
49 {
50 struct sh_eth_private *mdp = netdev_priv(ndev);
51
52 if (mdp->duplex) /* Full */
53 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
54 else /* Half */
55 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
56 }
57
58 static void sh_eth_set_rate(struct net_device *ndev)
59 {
60 struct sh_eth_private *mdp = netdev_priv(ndev);
61
62 switch (mdp->speed) {
63 case 10: /* 10BASE */
64 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_RTM, ECMR);
65 break;
66 case 100:/* 100BASE */
67 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_RTM, ECMR);
68 break;
69 default:
70 break;
71 }
72 }
73
74 /* SH7724 */
75 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
76 .set_duplex = sh_eth_set_duplex,
77 .set_rate = sh_eth_set_rate,
78
79 .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
80 .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
81 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f,
82
83 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
84 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
85 EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
86 .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
87
88 .apr = 1,
89 .mpr = 1,
90 .tpauser = 1,
91 .hw_swap = 1,
92 .rpadir = 1,
93 .rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */
94 };
95 #elif defined(CONFIG_CPU_SUBTYPE_SH7757)
96 #define SH_ETH_HAS_BOTH_MODULES 1
97 #define SH_ETH_HAS_TSU 1
98 static void sh_eth_set_duplex(struct net_device *ndev)
99 {
100 struct sh_eth_private *mdp = netdev_priv(ndev);
101
102 if (mdp->duplex) /* Full */
103 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
104 else /* Half */
105 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
106 }
107
108 static void sh_eth_set_rate(struct net_device *ndev)
109 {
110 struct sh_eth_private *mdp = netdev_priv(ndev);
111
112 switch (mdp->speed) {
113 case 10: /* 10BASE */
114 sh_eth_write(ndev, 0, RTRATE);
115 break;
116 case 100:/* 100BASE */
117 sh_eth_write(ndev, 1, RTRATE);
118 break;
119 default:
120 break;
121 }
122 }
123
124 /* SH7757 */
125 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
126 .set_duplex = sh_eth_set_duplex,
127 .set_rate = sh_eth_set_rate,
128
129 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
130 .rmcr_value = 0x00000001,
131
132 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO,
133 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE |
134 EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI,
135 .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE,
136
137 .apr = 1,
138 .mpr = 1,
139 .tpauser = 1,
140 .hw_swap = 1,
141 .no_ade = 1,
142 .rpadir = 1,
143 .rpadir_value = 2 << 16,
144 };
145
146 #define SH_GIGA_ETH_BASE 0xfee00000
147 #define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
148 #define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
149 static void sh_eth_chip_reset_giga(struct net_device *ndev)
150 {
151 int i;
152 unsigned long mahr[2], malr[2];
153
154 /* save MAHR and MALR */
155 for (i = 0; i < 2; i++) {
156 malr[i] = readl(GIGA_MALR(i));
157 mahr[i] = readl(GIGA_MAHR(i));
158 }
159
160 /* reset device */
161 writel(ARSTR_ARSTR, SH_GIGA_ETH_BASE + 0x1800);
162 mdelay(1);
163
164 /* restore MAHR and MALR */
165 for (i = 0; i < 2; i++) {
166 writel(malr[i], GIGA_MALR(i));
167 writel(mahr[i], GIGA_MAHR(i));
168 }
169 }
170
171 static int sh_eth_is_gether(struct sh_eth_private *mdp);
172 static void sh_eth_reset(struct net_device *ndev)
173 {
174 struct sh_eth_private *mdp = netdev_priv(ndev);
175 int cnt = 100;
176
177 if (sh_eth_is_gether(mdp)) {
178 sh_eth_write(ndev, 0x03, EDSR);
179 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER,
180 EDMR);
181 while (cnt > 0) {
182 if (!(sh_eth_read(ndev, EDMR) & 0x3))
183 break;
184 mdelay(1);
185 cnt--;
186 }
187 if (cnt < 0)
188 printk(KERN_ERR "Device reset fail\n");
189
190 /* Table Init */
191 sh_eth_write(ndev, 0x0, TDLAR);
192 sh_eth_write(ndev, 0x0, TDFAR);
193 sh_eth_write(ndev, 0x0, TDFXR);
194 sh_eth_write(ndev, 0x0, TDFFR);
195 sh_eth_write(ndev, 0x0, RDLAR);
196 sh_eth_write(ndev, 0x0, RDFAR);
197 sh_eth_write(ndev, 0x0, RDFXR);
198 sh_eth_write(ndev, 0x0, RDFFR);
199 } else {
200 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER,
201 EDMR);
202 mdelay(3);
203 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER,
204 EDMR);
205 }
206 }
207
208 static void sh_eth_set_duplex_giga(struct net_device *ndev)
209 {
210 struct sh_eth_private *mdp = netdev_priv(ndev);
211
212 if (mdp->duplex) /* Full */
213 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
214 else /* Half */
215 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
216 }
217
218 static void sh_eth_set_rate_giga(struct net_device *ndev)
219 {
220 struct sh_eth_private *mdp = netdev_priv(ndev);
221
222 switch (mdp->speed) {
223 case 10: /* 10BASE */
224 sh_eth_write(ndev, 0x00000000, GECMR);
225 break;
226 case 100:/* 100BASE */
227 sh_eth_write(ndev, 0x00000010, GECMR);
228 break;
229 case 1000: /* 1000BASE */
230 sh_eth_write(ndev, 0x00000020, GECMR);
231 break;
232 default:
233 break;
234 }
235 }
236
237 /* SH7757(GETHERC) */
238 static struct sh_eth_cpu_data sh_eth_my_cpu_data_giga = {
239 .chip_reset = sh_eth_chip_reset_giga,
240 .set_duplex = sh_eth_set_duplex_giga,
241 .set_rate = sh_eth_set_rate_giga,
242
243 .ecsr_value = ECSR_ICD | ECSR_MPD,
244 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
245 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
246
247 .tx_check = EESR_TC1 | EESR_FTC,
248 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
249 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
250 EESR_ECI,
251 .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
252 EESR_TFE,
253 .fdr_value = 0x0000072f,
254 .rmcr_value = 0x00000001,
255
256 .apr = 1,
257 .mpr = 1,
258 .tpauser = 1,
259 .bculr = 1,
260 .hw_swap = 1,
261 .rpadir = 1,
262 .rpadir_value = 2 << 16,
263 .no_trimd = 1,
264 .no_ade = 1,
265 };
266
267 static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp)
268 {
269 if (sh_eth_is_gether(mdp))
270 return &sh_eth_my_cpu_data_giga;
271 else
272 return &sh_eth_my_cpu_data;
273 }
274
275 #elif defined(CONFIG_CPU_SUBTYPE_SH7763)
276 #define SH_ETH_HAS_TSU 1
277 static void sh_eth_chip_reset(struct net_device *ndev)
278 {
279 struct sh_eth_private *mdp = netdev_priv(ndev);
280
281 /* reset device */
282 sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
283 mdelay(1);
284 }
285
286 static void sh_eth_reset(struct net_device *ndev)
287 {
288 int cnt = 100;
289
290 sh_eth_write(ndev, EDSR_ENALL, EDSR);
291 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR);
292 while (cnt > 0) {
293 if (!(sh_eth_read(ndev, EDMR) & 0x3))
294 break;
295 mdelay(1);
296 cnt--;
297 }
298 if (cnt == 0)
299 printk(KERN_ERR "Device reset fail\n");
300
301 /* Table Init */
302 sh_eth_write(ndev, 0x0, TDLAR);
303 sh_eth_write(ndev, 0x0, TDFAR);
304 sh_eth_write(ndev, 0x0, TDFXR);
305 sh_eth_write(ndev, 0x0, TDFFR);
306 sh_eth_write(ndev, 0x0, RDLAR);
307 sh_eth_write(ndev, 0x0, RDFAR);
308 sh_eth_write(ndev, 0x0, RDFXR);
309 sh_eth_write(ndev, 0x0, RDFFR);
310 }
311
312 static void sh_eth_set_duplex(struct net_device *ndev)
313 {
314 struct sh_eth_private *mdp = netdev_priv(ndev);
315
316 if (mdp->duplex) /* Full */
317 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR);
318 else /* Half */
319 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR);
320 }
321
322 static void sh_eth_set_rate(struct net_device *ndev)
323 {
324 struct sh_eth_private *mdp = netdev_priv(ndev);
325
326 switch (mdp->speed) {
327 case 10: /* 10BASE */
328 sh_eth_write(ndev, GECMR_10, GECMR);
329 break;
330 case 100:/* 100BASE */
331 sh_eth_write(ndev, GECMR_100, GECMR);
332 break;
333 case 1000: /* 1000BASE */
334 sh_eth_write(ndev, GECMR_1000, GECMR);
335 break;
336 default:
337 break;
338 }
339 }
340
341 /* sh7763 */
342 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
343 .chip_reset = sh_eth_chip_reset,
344 .set_duplex = sh_eth_set_duplex,
345 .set_rate = sh_eth_set_rate,
346
347 .ecsr_value = ECSR_ICD | ECSR_MPD,
348 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
349 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
350
351 .tx_check = EESR_TC1 | EESR_FTC,
352 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \
353 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \
354 EESR_ECI,
355 .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \
356 EESR_TFE,
357
358 .apr = 1,
359 .mpr = 1,
360 .tpauser = 1,
361 .bculr = 1,
362 .hw_swap = 1,
363 .no_trimd = 1,
364 .no_ade = 1,
365 .tsu = 1,
366 };
367
368 #elif defined(CONFIG_CPU_SUBTYPE_SH7619)
369 #define SH_ETH_RESET_DEFAULT 1
370 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
371 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
372
373 .apr = 1,
374 .mpr = 1,
375 .tpauser = 1,
376 .hw_swap = 1,
377 };
378 #elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
379 #define SH_ETH_RESET_DEFAULT 1
380 #define SH_ETH_HAS_TSU 1
381 static struct sh_eth_cpu_data sh_eth_my_cpu_data = {
382 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff,
383 .tsu = 1,
384 };
385 #endif
386
387 static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
388 {
389 if (!cd->ecsr_value)
390 cd->ecsr_value = DEFAULT_ECSR_INIT;
391
392 if (!cd->ecsipr_value)
393 cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
394
395 if (!cd->fcftr_value)
396 cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \
397 DEFAULT_FIFO_F_D_RFD;
398
399 if (!cd->fdr_value)
400 cd->fdr_value = DEFAULT_FDR_INIT;
401
402 if (!cd->rmcr_value)
403 cd->rmcr_value = DEFAULT_RMCR_VALUE;
404
405 if (!cd->tx_check)
406 cd->tx_check = DEFAULT_TX_CHECK;
407
408 if (!cd->eesr_err_check)
409 cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
410
411 if (!cd->tx_error_check)
412 cd->tx_error_check = DEFAULT_TX_ERROR_CHECK;
413 }
414
415 #if defined(SH_ETH_RESET_DEFAULT)
416 /* Chip Reset */
417 static void sh_eth_reset(struct net_device *ndev)
418 {
419 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, EDMR);
420 mdelay(3);
421 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, EDMR);
422 }
423 #endif
424
425 #if defined(CONFIG_CPU_SH4)
426 static void sh_eth_set_receive_align(struct sk_buff *skb)
427 {
428 int reserve;
429
430 reserve = SH4_SKB_RX_ALIGN - ((u32)skb->data & (SH4_SKB_RX_ALIGN - 1));
431 if (reserve)
432 skb_reserve(skb, reserve);
433 }
434 #else
435 static void sh_eth_set_receive_align(struct sk_buff *skb)
436 {
437 skb_reserve(skb, SH2_SH3_SKB_RX_ALIGN);
438 }
439 #endif
440
441
442 /* CPU <-> EDMAC endian convert */
443 static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x)
444 {
445 switch (mdp->edmac_endian) {
446 case EDMAC_LITTLE_ENDIAN:
447 return cpu_to_le32(x);
448 case EDMAC_BIG_ENDIAN:
449 return cpu_to_be32(x);
450 }
451 return x;
452 }
453
454 static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x)
455 {
456 switch (mdp->edmac_endian) {
457 case EDMAC_LITTLE_ENDIAN:
458 return le32_to_cpu(x);
459 case EDMAC_BIG_ENDIAN:
460 return be32_to_cpu(x);
461 }
462 return x;
463 }
464
465 /*
466 * Program the hardware MAC address from dev->dev_addr.
467 */
468 static void update_mac_address(struct net_device *ndev)
469 {
470 sh_eth_write(ndev,
471 (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
472 (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
473 sh_eth_write(ndev,
474 (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
475 }
476
477 /*
478 * Get MAC address from SuperH MAC address register
479 *
480 * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
481 * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
482 * When you want use this device, you must set MAC address in bootloader.
483 *
484 */
485 static void read_mac_address(struct net_device *ndev, unsigned char *mac)
486 {
487 if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
488 memcpy(ndev->dev_addr, mac, 6);
489 } else {
490 ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24);
491 ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF;
492 ndev->dev_addr[2] = (sh_eth_read(ndev, MAHR) >> 8) & 0xFF;
493 ndev->dev_addr[3] = (sh_eth_read(ndev, MAHR) & 0xFF);
494 ndev->dev_addr[4] = (sh_eth_read(ndev, MALR) >> 8) & 0xFF;
495 ndev->dev_addr[5] = (sh_eth_read(ndev, MALR) & 0xFF);
496 }
497 }
498
499 static int sh_eth_is_gether(struct sh_eth_private *mdp)
500 {
501 if (mdp->reg_offset == sh_eth_offset_gigabit)
502 return 1;
503 else
504 return 0;
505 }
506
507 static unsigned long sh_eth_get_edtrr_trns(struct sh_eth_private *mdp)
508 {
509 if (sh_eth_is_gether(mdp))
510 return EDTRR_TRNS_GETHER;
511 else
512 return EDTRR_TRNS_ETHER;
513 }
514
515 struct bb_info {
516 void (*set_gate)(unsigned long addr);
517 struct mdiobb_ctrl ctrl;
518 u32 addr;
519 u32 mmd_msk;/* MMD */
520 u32 mdo_msk;
521 u32 mdi_msk;
522 u32 mdc_msk;
523 };
524
525 /* PHY bit set */
526 static void bb_set(u32 addr, u32 msk)
527 {
528 writel(readl(addr) | msk, addr);
529 }
530
531 /* PHY bit clear */
532 static void bb_clr(u32 addr, u32 msk)
533 {
534 writel((readl(addr) & ~msk), addr);
535 }
536
537 /* PHY bit read */
538 static int bb_read(u32 addr, u32 msk)
539 {
540 return (readl(addr) & msk) != 0;
541 }
542
543 /* Data I/O pin control */
544 static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
545 {
546 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
547
548 if (bitbang->set_gate)
549 bitbang->set_gate(bitbang->addr);
550
551 if (bit)
552 bb_set(bitbang->addr, bitbang->mmd_msk);
553 else
554 bb_clr(bitbang->addr, bitbang->mmd_msk);
555 }
556
557 /* Set bit data*/
558 static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
559 {
560 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
561
562 if (bitbang->set_gate)
563 bitbang->set_gate(bitbang->addr);
564
565 if (bit)
566 bb_set(bitbang->addr, bitbang->mdo_msk);
567 else
568 bb_clr(bitbang->addr, bitbang->mdo_msk);
569 }
570
571 /* Get bit data*/
572 static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
573 {
574 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
575
576 if (bitbang->set_gate)
577 bitbang->set_gate(bitbang->addr);
578
579 return bb_read(bitbang->addr, bitbang->mdi_msk);
580 }
581
582 /* MDC pin control */
583 static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
584 {
585 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
586
587 if (bitbang->set_gate)
588 bitbang->set_gate(bitbang->addr);
589
590 if (bit)
591 bb_set(bitbang->addr, bitbang->mdc_msk);
592 else
593 bb_clr(bitbang->addr, bitbang->mdc_msk);
594 }
595
596 /* mdio bus control struct */
597 static struct mdiobb_ops bb_ops = {
598 .owner = THIS_MODULE,
599 .set_mdc = sh_mdc_ctrl,
600 .set_mdio_dir = sh_mmd_ctrl,
601 .set_mdio_data = sh_set_mdio,
602 .get_mdio_data = sh_get_mdio,
603 };
604
605 /* free skb and descriptor buffer */
606 static void sh_eth_ring_free(struct net_device *ndev)
607 {
608 struct sh_eth_private *mdp = netdev_priv(ndev);
609 int i;
610
611 /* Free Rx skb ringbuffer */
612 if (mdp->rx_skbuff) {
613 for (i = 0; i < RX_RING_SIZE; i++) {
614 if (mdp->rx_skbuff[i])
615 dev_kfree_skb(mdp->rx_skbuff[i]);
616 }
617 }
618 kfree(mdp->rx_skbuff);
619
620 /* Free Tx skb ringbuffer */
621 if (mdp->tx_skbuff) {
622 for (i = 0; i < TX_RING_SIZE; i++) {
623 if (mdp->tx_skbuff[i])
624 dev_kfree_skb(mdp->tx_skbuff[i]);
625 }
626 }
627 kfree(mdp->tx_skbuff);
628 }
629
630 /* format skb and descriptor buffer */
631 static void sh_eth_ring_format(struct net_device *ndev)
632 {
633 struct sh_eth_private *mdp = netdev_priv(ndev);
634 int i;
635 struct sk_buff *skb;
636 struct sh_eth_rxdesc *rxdesc = NULL;
637 struct sh_eth_txdesc *txdesc = NULL;
638 int rx_ringsize = sizeof(*rxdesc) * RX_RING_SIZE;
639 int tx_ringsize = sizeof(*txdesc) * TX_RING_SIZE;
640
641 mdp->cur_rx = mdp->cur_tx = 0;
642 mdp->dirty_rx = mdp->dirty_tx = 0;
643
644 memset(mdp->rx_ring, 0, rx_ringsize);
645
646 /* build Rx ring buffer */
647 for (i = 0; i < RX_RING_SIZE; i++) {
648 /* skb */
649 mdp->rx_skbuff[i] = NULL;
650 skb = dev_alloc_skb(mdp->rx_buf_sz);
651 mdp->rx_skbuff[i] = skb;
652 if (skb == NULL)
653 break;
654 dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
655 DMA_FROM_DEVICE);
656 skb->dev = ndev; /* Mark as being used by this device. */
657 sh_eth_set_receive_align(skb);
658
659 /* RX descriptor */
660 rxdesc = &mdp->rx_ring[i];
661 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
662 rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);
663
664 /* The size of the buffer is 16 byte boundary. */
665 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
666 /* Rx descriptor address set */
667 if (i == 0) {
668 sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
669 if (sh_eth_is_gether(mdp))
670 sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
671 }
672 }
673
674 mdp->dirty_rx = (u32) (i - RX_RING_SIZE);
675
676 /* Mark the last entry as wrapping the ring. */
677 rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL);
678
679 memset(mdp->tx_ring, 0, tx_ringsize);
680
681 /* build Tx ring buffer */
682 for (i = 0; i < TX_RING_SIZE; i++) {
683 mdp->tx_skbuff[i] = NULL;
684 txdesc = &mdp->tx_ring[i];
685 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
686 txdesc->buffer_length = 0;
687 if (i == 0) {
688 /* Tx descriptor address set */
689 sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
690 if (sh_eth_is_gether(mdp))
691 sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
692 }
693 }
694
695 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
696 }
697
698 /* Get skb and descriptor buffer */
699 static int sh_eth_ring_init(struct net_device *ndev)
700 {
701 struct sh_eth_private *mdp = netdev_priv(ndev);
702 int rx_ringsize, tx_ringsize, ret = 0;
703
704 /*
705 * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
706 * card needs room to do 8 byte alignment, +2 so we can reserve
707 * the first 2 bytes, and +16 gets room for the status word from the
708 * card.
709 */
710 mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
711 (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
712 if (mdp->cd->rpadir)
713 mdp->rx_buf_sz += NET_IP_ALIGN;
714
715 /* Allocate RX and TX skb rings */
716 mdp->rx_skbuff = kmalloc(sizeof(*mdp->rx_skbuff) * RX_RING_SIZE,
717 GFP_KERNEL);
718 if (!mdp->rx_skbuff) {
719 dev_err(&ndev->dev, "Cannot allocate Rx skb\n");
720 ret = -ENOMEM;
721 return ret;
722 }
723
724 mdp->tx_skbuff = kmalloc(sizeof(*mdp->tx_skbuff) * TX_RING_SIZE,
725 GFP_KERNEL);
726 if (!mdp->tx_skbuff) {
727 dev_err(&ndev->dev, "Cannot allocate Tx skb\n");
728 ret = -ENOMEM;
729 goto skb_ring_free;
730 }
731
732 /* Allocate all Rx descriptors. */
733 rx_ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
734 mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma,
735 GFP_KERNEL);
736
737 if (!mdp->rx_ring) {
738 dev_err(&ndev->dev, "Cannot allocate Rx Ring (size %d bytes)\n",
739 rx_ringsize);
740 ret = -ENOMEM;
741 goto desc_ring_free;
742 }
743
744 mdp->dirty_rx = 0;
745
746 /* Allocate all Tx descriptors. */
747 tx_ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
748 mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma,
749 GFP_KERNEL);
750 if (!mdp->tx_ring) {
751 dev_err(&ndev->dev, "Cannot allocate Tx Ring (size %d bytes)\n",
752 tx_ringsize);
753 ret = -ENOMEM;
754 goto desc_ring_free;
755 }
756 return ret;
757
758 desc_ring_free:
759 /* free DMA buffer */
760 dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma);
761
762 skb_ring_free:
763 /* Free Rx and Tx skb ring buffer */
764 sh_eth_ring_free(ndev);
765
766 return ret;
767 }
768
769 static int sh_eth_dev_init(struct net_device *ndev)
770 {
771 int ret = 0;
772 struct sh_eth_private *mdp = netdev_priv(ndev);
773 u_int32_t rx_int_var, tx_int_var;
774 u32 val;
775
776 /* Soft Reset */
777 sh_eth_reset(ndev);
778
779 /* Descriptor format */
780 sh_eth_ring_format(ndev);
781 if (mdp->cd->rpadir)
782 sh_eth_write(ndev, mdp->cd->rpadir_value, RPADIR);
783
784 /* all sh_eth int mask */
785 sh_eth_write(ndev, 0, EESIPR);
786
787 #if defined(__LITTLE_ENDIAN__)
788 if (mdp->cd->hw_swap)
789 sh_eth_write(ndev, EDMR_EL, EDMR);
790 else
791 #endif
792 sh_eth_write(ndev, 0, EDMR);
793
794 /* FIFO size set */
795 sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
796 sh_eth_write(ndev, 0, TFTR);
797
798 /* Frame recv control */
799 sh_eth_write(ndev, mdp->cd->rmcr_value, RMCR);
800
801 rx_int_var = mdp->rx_int_var = DESC_I_RINT8 | DESC_I_RINT5;
802 tx_int_var = mdp->tx_int_var = DESC_I_TINT2;
803 sh_eth_write(ndev, rx_int_var | tx_int_var, TRSCER);
804
805 if (mdp->cd->bculr)
806 sh_eth_write(ndev, 0x800, BCULR); /* Burst sycle set */
807
808 sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
809
810 if (!mdp->cd->no_trimd)
811 sh_eth_write(ndev, 0, TRIMD);
812
813 /* Recv frame limit set register */
814 sh_eth_write(ndev, RFLR_VALUE, RFLR);
815
816 sh_eth_write(ndev, sh_eth_read(ndev, EESR), EESR);
817 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
818
819 /* PAUSE Prohibition */
820 val = (sh_eth_read(ndev, ECMR) & ECMR_DM) |
821 ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE;
822
823 sh_eth_write(ndev, val, ECMR);
824
825 if (mdp->cd->set_rate)
826 mdp->cd->set_rate(ndev);
827
828 /* E-MAC Status Register clear */
829 sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
830
831 /* E-MAC Interrupt Enable register */
832 sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
833
834 /* Set MAC address */
835 update_mac_address(ndev);
836
837 /* mask reset */
838 if (mdp->cd->apr)
839 sh_eth_write(ndev, APR_AP, APR);
840 if (mdp->cd->mpr)
841 sh_eth_write(ndev, MPR_MP, MPR);
842 if (mdp->cd->tpauser)
843 sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
844
845 /* Setting the Rx mode will start the Rx process. */
846 sh_eth_write(ndev, EDRRR_R, EDRRR);
847
848 netif_start_queue(ndev);
849
850 return ret;
851 }
852
853 /* free Tx skb function */
854 static int sh_eth_txfree(struct net_device *ndev)
855 {
856 struct sh_eth_private *mdp = netdev_priv(ndev);
857 struct sh_eth_txdesc *txdesc;
858 int freeNum = 0;
859 int entry = 0;
860
861 for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
862 entry = mdp->dirty_tx % TX_RING_SIZE;
863 txdesc = &mdp->tx_ring[entry];
864 if (txdesc->status & cpu_to_edmac(mdp, TD_TACT))
865 break;
866 /* Free the original skb. */
867 if (mdp->tx_skbuff[entry]) {
868 dma_unmap_single(&ndev->dev, txdesc->addr,
869 txdesc->buffer_length, DMA_TO_DEVICE);
870 dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
871 mdp->tx_skbuff[entry] = NULL;
872 freeNum++;
873 }
874 txdesc->status = cpu_to_edmac(mdp, TD_TFP);
875 if (entry >= TX_RING_SIZE - 1)
876 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);
877
878 mdp->stats.tx_packets++;
879 mdp->stats.tx_bytes += txdesc->buffer_length;
880 }
881 return freeNum;
882 }
883
884 /* Packet receive function */
885 static int sh_eth_rx(struct net_device *ndev)
886 {
887 struct sh_eth_private *mdp = netdev_priv(ndev);
888 struct sh_eth_rxdesc *rxdesc;
889
890 int entry = mdp->cur_rx % RX_RING_SIZE;
891 int boguscnt = (mdp->dirty_rx + RX_RING_SIZE) - mdp->cur_rx;
892 struct sk_buff *skb;
893 u16 pkt_len = 0;
894 u32 desc_status;
895
896 rxdesc = &mdp->rx_ring[entry];
897 while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) {
898 desc_status = edmac_to_cpu(mdp, rxdesc->status);
899 pkt_len = rxdesc->frame_length;
900
901 if (--boguscnt < 0)
902 break;
903
904 if (!(desc_status & RDFEND))
905 mdp->stats.rx_length_errors++;
906
907 if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
908 RD_RFS5 | RD_RFS6 | RD_RFS10)) {
909 mdp->stats.rx_errors++;
910 if (desc_status & RD_RFS1)
911 mdp->stats.rx_crc_errors++;
912 if (desc_status & RD_RFS2)
913 mdp->stats.rx_frame_errors++;
914 if (desc_status & RD_RFS3)
915 mdp->stats.rx_length_errors++;
916 if (desc_status & RD_RFS4)
917 mdp->stats.rx_length_errors++;
918 if (desc_status & RD_RFS6)
919 mdp->stats.rx_missed_errors++;
920 if (desc_status & RD_RFS10)
921 mdp->stats.rx_over_errors++;
922 } else {
923 if (!mdp->cd->hw_swap)
924 sh_eth_soft_swap(
925 phys_to_virt(ALIGN(rxdesc->addr, 4)),
926 pkt_len + 2);
927 skb = mdp->rx_skbuff[entry];
928 mdp->rx_skbuff[entry] = NULL;
929 if (mdp->cd->rpadir)
930 skb_reserve(skb, NET_IP_ALIGN);
931 skb_put(skb, pkt_len);
932 skb->protocol = eth_type_trans(skb, ndev);
933 netif_rx(skb);
934 mdp->stats.rx_packets++;
935 mdp->stats.rx_bytes += pkt_len;
936 }
937 rxdesc->status |= cpu_to_edmac(mdp, RD_RACT);
938 entry = (++mdp->cur_rx) % RX_RING_SIZE;
939 rxdesc = &mdp->rx_ring[entry];
940 }
941
942 /* Refill the Rx ring buffers. */
943 for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
944 entry = mdp->dirty_rx % RX_RING_SIZE;
945 rxdesc = &mdp->rx_ring[entry];
946 /* The size of the buffer is 16 byte boundary. */
947 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);
948
949 if (mdp->rx_skbuff[entry] == NULL) {
950 skb = dev_alloc_skb(mdp->rx_buf_sz);
951 mdp->rx_skbuff[entry] = skb;
952 if (skb == NULL)
953 break; /* Better luck next round. */
954 dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
955 DMA_FROM_DEVICE);
956 skb->dev = ndev;
957 sh_eth_set_receive_align(skb);
958
959 skb_checksum_none_assert(skb);
960 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
961 }
962 if (entry >= RX_RING_SIZE - 1)
963 rxdesc->status |=
964 cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL);
965 else
966 rxdesc->status |=
967 cpu_to_edmac(mdp, RD_RACT | RD_RFP);
968 }
969
970 /* Restart Rx engine if stopped. */
971 /* If we don't need to check status, don't. -KDU */
972 if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R))
973 sh_eth_write(ndev, EDRRR_R, EDRRR);
974
975 return 0;
976 }
977
978 static void sh_eth_rcv_snd_disable(struct net_device *ndev)
979 {
980 /* disable tx and rx */
981 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) &
982 ~(ECMR_RE | ECMR_TE), ECMR);
983 }
984
985 static void sh_eth_rcv_snd_enable(struct net_device *ndev)
986 {
987 /* enable tx and rx */
988 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) |
989 (ECMR_RE | ECMR_TE), ECMR);
990 }
991
992 /* error control function */
993 static void sh_eth_error(struct net_device *ndev, int intr_status)
994 {
995 struct sh_eth_private *mdp = netdev_priv(ndev);
996 u32 felic_stat;
997 u32 link_stat;
998 u32 mask;
999
1000 if (intr_status & EESR_ECI) {
1001 felic_stat = sh_eth_read(ndev, ECSR);
1002 sh_eth_write(ndev, felic_stat, ECSR); /* clear int */
1003 if (felic_stat & ECSR_ICD)
1004 mdp->stats.tx_carrier_errors++;
1005 if (felic_stat & ECSR_LCHNG) {
1006 /* Link Changed */
1007 if (mdp->cd->no_psr || mdp->no_ether_link) {
1008 if (mdp->link == PHY_DOWN)
1009 link_stat = 0;
1010 else
1011 link_stat = PHY_ST_LINK;
1012 } else {
1013 link_stat = (sh_eth_read(ndev, PSR));
1014 if (mdp->ether_link_active_low)
1015 link_stat = ~link_stat;
1016 }
1017 if (!(link_stat & PHY_ST_LINK))
1018 sh_eth_rcv_snd_disable(ndev);
1019 else {
1020 /* Link Up */
1021 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) &
1022 ~DMAC_M_ECI, EESIPR);
1023 /*clear int */
1024 sh_eth_write(ndev, sh_eth_read(ndev, ECSR),
1025 ECSR);
1026 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) |
1027 DMAC_M_ECI, EESIPR);
1028 /* enable tx and rx */
1029 sh_eth_rcv_snd_enable(ndev);
1030 }
1031 }
1032 }
1033
1034 if (intr_status & EESR_TWB) {
1035 /* Write buck end. unused write back interrupt */
1036 if (intr_status & EESR_TABT) /* Transmit Abort int */
1037 mdp->stats.tx_aborted_errors++;
1038 if (netif_msg_tx_err(mdp))
1039 dev_err(&ndev->dev, "Transmit Abort\n");
1040 }
1041
1042 if (intr_status & EESR_RABT) {
1043 /* Receive Abort int */
1044 if (intr_status & EESR_RFRMER) {
1045 /* Receive Frame Overflow int */
1046 mdp->stats.rx_frame_errors++;
1047 if (netif_msg_rx_err(mdp))
1048 dev_err(&ndev->dev, "Receive Abort\n");
1049 }
1050 }
1051
1052 if (intr_status & EESR_TDE) {
1053 /* Transmit Descriptor Empty int */
1054 mdp->stats.tx_fifo_errors++;
1055 if (netif_msg_tx_err(mdp))
1056 dev_err(&ndev->dev, "Transmit Descriptor Empty\n");
1057 }
1058
1059 if (intr_status & EESR_TFE) {
1060 /* FIFO under flow */
1061 mdp->stats.tx_fifo_errors++;
1062 if (netif_msg_tx_err(mdp))
1063 dev_err(&ndev->dev, "Transmit FIFO Under flow\n");
1064 }
1065
1066 if (intr_status & EESR_RDE) {
1067 /* Receive Descriptor Empty int */
1068 mdp->stats.rx_over_errors++;
1069
1070 if (sh_eth_read(ndev, EDRRR) ^ EDRRR_R)
1071 sh_eth_write(ndev, EDRRR_R, EDRRR);
1072 if (netif_msg_rx_err(mdp))
1073 dev_err(&ndev->dev, "Receive Descriptor Empty\n");
1074 }
1075
1076 if (intr_status & EESR_RFE) {
1077 /* Receive FIFO Overflow int */
1078 mdp->stats.rx_fifo_errors++;
1079 if (netif_msg_rx_err(mdp))
1080 dev_err(&ndev->dev, "Receive FIFO Overflow\n");
1081 }
1082
1083 if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
1084 /* Address Error */
1085 mdp->stats.tx_fifo_errors++;
1086 if (netif_msg_tx_err(mdp))
1087 dev_err(&ndev->dev, "Address Error\n");
1088 }
1089
1090 mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
1091 if (mdp->cd->no_ade)
1092 mask &= ~EESR_ADE;
1093 if (intr_status & mask) {
1094 /* Tx error */
1095 u32 edtrr = sh_eth_read(ndev, EDTRR);
1096 /* dmesg */
1097 dev_err(&ndev->dev, "TX error. status=%8.8x cur_tx=%8.8x ",
1098 intr_status, mdp->cur_tx);
1099 dev_err(&ndev->dev, "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
1100 mdp->dirty_tx, (u32) ndev->state, edtrr);
1101 /* dirty buffer free */
1102 sh_eth_txfree(ndev);
1103
1104 /* SH7712 BUG */
1105 if (edtrr ^ sh_eth_get_edtrr_trns(mdp)) {
1106 /* tx dma start */
1107 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
1108 }
1109 /* wakeup */
1110 netif_wake_queue(ndev);
1111 }
1112 }
1113
1114 static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
1115 {
1116 struct net_device *ndev = netdev;
1117 struct sh_eth_private *mdp = netdev_priv(ndev);
1118 struct sh_eth_cpu_data *cd = mdp->cd;
1119 irqreturn_t ret = IRQ_NONE;
1120 u32 intr_status = 0;
1121
1122 spin_lock(&mdp->lock);
1123
1124 /* Get interrpt stat */
1125 intr_status = sh_eth_read(ndev, EESR);
1126 /* Clear interrupt */
1127 if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF |
1128 EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF |
1129 cd->tx_check | cd->eesr_err_check)) {
1130 sh_eth_write(ndev, intr_status, EESR);
1131 ret = IRQ_HANDLED;
1132 } else
1133 goto other_irq;
1134
1135 if (intr_status & (EESR_FRC | /* Frame recv*/
1136 EESR_RMAF | /* Multi cast address recv*/
1137 EESR_RRF | /* Bit frame recv */
1138 EESR_RTLF | /* Long frame recv*/
1139 EESR_RTSF | /* short frame recv */
1140 EESR_PRE | /* PHY-LSI recv error */
1141 EESR_CERF)){ /* recv frame CRC error */
1142 sh_eth_rx(ndev);
1143 }
1144
1145 /* Tx Check */
1146 if (intr_status & cd->tx_check) {
1147 sh_eth_txfree(ndev);
1148 netif_wake_queue(ndev);
1149 }
1150
1151 if (intr_status & cd->eesr_err_check)
1152 sh_eth_error(ndev, intr_status);
1153
1154 other_irq:
1155 spin_unlock(&mdp->lock);
1156
1157 return ret;
1158 }
1159
1160 static void sh_eth_timer(unsigned long data)
1161 {
1162 struct net_device *ndev = (struct net_device *)data;
1163 struct sh_eth_private *mdp = netdev_priv(ndev);
1164
1165 mod_timer(&mdp->timer, jiffies + (10 * HZ));
1166 }
1167
1168 /* PHY state control function */
1169 static void sh_eth_adjust_link(struct net_device *ndev)
1170 {
1171 struct sh_eth_private *mdp = netdev_priv(ndev);
1172 struct phy_device *phydev = mdp->phydev;
1173 int new_state = 0;
1174
1175 if (phydev->link != PHY_DOWN) {
1176 if (phydev->duplex != mdp->duplex) {
1177 new_state = 1;
1178 mdp->duplex = phydev->duplex;
1179 if (mdp->cd->set_duplex)
1180 mdp->cd->set_duplex(ndev);
1181 }
1182
1183 if (phydev->speed != mdp->speed) {
1184 new_state = 1;
1185 mdp->speed = phydev->speed;
1186 if (mdp->cd->set_rate)
1187 mdp->cd->set_rate(ndev);
1188 }
1189 if (mdp->link == PHY_DOWN) {
1190 sh_eth_write(ndev,
1191 (sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR);
1192 new_state = 1;
1193 mdp->link = phydev->link;
1194 }
1195 } else if (mdp->link) {
1196 new_state = 1;
1197 mdp->link = PHY_DOWN;
1198 mdp->speed = 0;
1199 mdp->duplex = -1;
1200 }
1201
1202 if (new_state && netif_msg_link(mdp))
1203 phy_print_status(phydev);
1204 }
1205
1206 /* PHY init function */
1207 static int sh_eth_phy_init(struct net_device *ndev)
1208 {
1209 struct sh_eth_private *mdp = netdev_priv(ndev);
1210 char phy_id[MII_BUS_ID_SIZE + 3];
1211 struct phy_device *phydev = NULL;
1212
1213 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
1214 mdp->mii_bus->id , mdp->phy_id);
1215
1216 mdp->link = PHY_DOWN;
1217 mdp->speed = 0;
1218 mdp->duplex = -1;
1219
1220 /* Try connect to PHY */
1221 phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
1222 0, mdp->phy_interface);
1223 if (IS_ERR(phydev)) {
1224 dev_err(&ndev->dev, "phy_connect failed\n");
1225 return PTR_ERR(phydev);
1226 }
1227
1228 dev_info(&ndev->dev, "attached phy %i to driver %s\n",
1229 phydev->addr, phydev->drv->name);
1230
1231 mdp->phydev = phydev;
1232
1233 return 0;
1234 }
1235
1236 /* PHY control start function */
1237 static int sh_eth_phy_start(struct net_device *ndev)
1238 {
1239 struct sh_eth_private *mdp = netdev_priv(ndev);
1240 int ret;
1241
1242 ret = sh_eth_phy_init(ndev);
1243 if (ret)
1244 return ret;
1245
1246 /* reset phy - this also wakes it from PDOWN */
1247 phy_write(mdp->phydev, MII_BMCR, BMCR_RESET);
1248 phy_start(mdp->phydev);
1249
1250 return 0;
1251 }
1252
1253 static int sh_eth_get_settings(struct net_device *ndev,
1254 struct ethtool_cmd *ecmd)
1255 {
1256 struct sh_eth_private *mdp = netdev_priv(ndev);
1257 unsigned long flags;
1258 int ret;
1259
1260 spin_lock_irqsave(&mdp->lock, flags);
1261 ret = phy_ethtool_gset(mdp->phydev, ecmd);
1262 spin_unlock_irqrestore(&mdp->lock, flags);
1263
1264 return ret;
1265 }
1266
1267 static int sh_eth_set_settings(struct net_device *ndev,
1268 struct ethtool_cmd *ecmd)
1269 {
1270 struct sh_eth_private *mdp = netdev_priv(ndev);
1271 unsigned long flags;
1272 int ret;
1273
1274 spin_lock_irqsave(&mdp->lock, flags);
1275
1276 /* disable tx and rx */
1277 sh_eth_rcv_snd_disable(ndev);
1278
1279 ret = phy_ethtool_sset(mdp->phydev, ecmd);
1280 if (ret)
1281 goto error_exit;
1282
1283 if (ecmd->duplex == DUPLEX_FULL)
1284 mdp->duplex = 1;
1285 else
1286 mdp->duplex = 0;
1287
1288 if (mdp->cd->set_duplex)
1289 mdp->cd->set_duplex(ndev);
1290
1291 error_exit:
1292 mdelay(1);
1293
1294 /* enable tx and rx */
1295 sh_eth_rcv_snd_enable(ndev);
1296
1297 spin_unlock_irqrestore(&mdp->lock, flags);
1298
1299 return ret;
1300 }
1301
1302 static int sh_eth_nway_reset(struct net_device *ndev)
1303 {
1304 struct sh_eth_private *mdp = netdev_priv(ndev);
1305 unsigned long flags;
1306 int ret;
1307
1308 spin_lock_irqsave(&mdp->lock, flags);
1309 ret = phy_start_aneg(mdp->phydev);
1310 spin_unlock_irqrestore(&mdp->lock, flags);
1311
1312 return ret;
1313 }
1314
1315 static u32 sh_eth_get_msglevel(struct net_device *ndev)
1316 {
1317 struct sh_eth_private *mdp = netdev_priv(ndev);
1318 return mdp->msg_enable;
1319 }
1320
1321 static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
1322 {
1323 struct sh_eth_private *mdp = netdev_priv(ndev);
1324 mdp->msg_enable = value;
1325 }
1326
1327 static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
1328 "rx_current", "tx_current",
1329 "rx_dirty", "tx_dirty",
1330 };
1331 #define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats)
1332
1333 static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
1334 {
1335 switch (sset) {
1336 case ETH_SS_STATS:
1337 return SH_ETH_STATS_LEN;
1338 default:
1339 return -EOPNOTSUPP;
1340 }
1341 }
1342
1343 static void sh_eth_get_ethtool_stats(struct net_device *ndev,
1344 struct ethtool_stats *stats, u64 *data)
1345 {
1346 struct sh_eth_private *mdp = netdev_priv(ndev);
1347 int i = 0;
1348
1349 /* device-specific stats */
1350 data[i++] = mdp->cur_rx;
1351 data[i++] = mdp->cur_tx;
1352 data[i++] = mdp->dirty_rx;
1353 data[i++] = mdp->dirty_tx;
1354 }
1355
1356 static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
1357 {
1358 switch (stringset) {
1359 case ETH_SS_STATS:
1360 memcpy(data, *sh_eth_gstrings_stats,
1361 sizeof(sh_eth_gstrings_stats));
1362 break;
1363 }
1364 }
1365
1366 static struct ethtool_ops sh_eth_ethtool_ops = {
1367 .get_settings = sh_eth_get_settings,
1368 .set_settings = sh_eth_set_settings,
1369 .nway_reset = sh_eth_nway_reset,
1370 .get_msglevel = sh_eth_get_msglevel,
1371 .set_msglevel = sh_eth_set_msglevel,
1372 .get_link = ethtool_op_get_link,
1373 .get_strings = sh_eth_get_strings,
1374 .get_ethtool_stats = sh_eth_get_ethtool_stats,
1375 .get_sset_count = sh_eth_get_sset_count,
1376 };
1377
1378 /* network device open function */
1379 static int sh_eth_open(struct net_device *ndev)
1380 {
1381 int ret = 0;
1382 struct sh_eth_private *mdp = netdev_priv(ndev);
1383
1384 pm_runtime_get_sync(&mdp->pdev->dev);
1385
1386 ret = request_irq(ndev->irq, sh_eth_interrupt,
1387 #if defined(CONFIG_CPU_SUBTYPE_SH7763) || \
1388 defined(CONFIG_CPU_SUBTYPE_SH7764) || \
1389 defined(CONFIG_CPU_SUBTYPE_SH7757)
1390 IRQF_SHARED,
1391 #else
1392 0,
1393 #endif
1394 ndev->name, ndev);
1395 if (ret) {
1396 dev_err(&ndev->dev, "Can not assign IRQ number\n");
1397 return ret;
1398 }
1399
1400 /* Descriptor set */
1401 ret = sh_eth_ring_init(ndev);
1402 if (ret)
1403 goto out_free_irq;
1404
1405 /* device init */
1406 ret = sh_eth_dev_init(ndev);
1407 if (ret)
1408 goto out_free_irq;
1409
1410 /* PHY control start*/
1411 ret = sh_eth_phy_start(ndev);
1412 if (ret)
1413 goto out_free_irq;
1414
1415 /* Set the timer to check for link beat. */
1416 init_timer(&mdp->timer);
1417 mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
1418 setup_timer(&mdp->timer, sh_eth_timer, (unsigned long)ndev);
1419
1420 return ret;
1421
1422 out_free_irq:
1423 free_irq(ndev->irq, ndev);
1424 pm_runtime_put_sync(&mdp->pdev->dev);
1425 return ret;
1426 }
1427
1428 /* Timeout function */
1429 static void sh_eth_tx_timeout(struct net_device *ndev)
1430 {
1431 struct sh_eth_private *mdp = netdev_priv(ndev);
1432 struct sh_eth_rxdesc *rxdesc;
1433 int i;
1434
1435 netif_stop_queue(ndev);
1436
1437 if (netif_msg_timer(mdp))
1438 dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x,"
1439 " resetting...\n", ndev->name, (int)sh_eth_read(ndev, EESR));
1440
1441 /* tx_errors count up */
1442 mdp->stats.tx_errors++;
1443
1444 /* timer off */
1445 del_timer_sync(&mdp->timer);
1446
1447 /* Free all the skbuffs in the Rx queue. */
1448 for (i = 0; i < RX_RING_SIZE; i++) {
1449 rxdesc = &mdp->rx_ring[i];
1450 rxdesc->status = 0;
1451 rxdesc->addr = 0xBADF00D0;
1452 if (mdp->rx_skbuff[i])
1453 dev_kfree_skb(mdp->rx_skbuff[i]);
1454 mdp->rx_skbuff[i] = NULL;
1455 }
1456 for (i = 0; i < TX_RING_SIZE; i++) {
1457 if (mdp->tx_skbuff[i])
1458 dev_kfree_skb(mdp->tx_skbuff[i]);
1459 mdp->tx_skbuff[i] = NULL;
1460 }
1461
1462 /* device init */
1463 sh_eth_dev_init(ndev);
1464
1465 /* timer on */
1466 mdp->timer.expires = (jiffies + (24 * HZ)) / 10;/* 2.4 sec. */
1467 add_timer(&mdp->timer);
1468 }
1469
1470 /* Packet transmit function */
1471 static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
1472 {
1473 struct sh_eth_private *mdp = netdev_priv(ndev);
1474 struct sh_eth_txdesc *txdesc;
1475 u32 entry;
1476 unsigned long flags;
1477
1478 spin_lock_irqsave(&mdp->lock, flags);
1479 if ((mdp->cur_tx - mdp->dirty_tx) >= (TX_RING_SIZE - 4)) {
1480 if (!sh_eth_txfree(ndev)) {
1481 if (netif_msg_tx_queued(mdp))
1482 dev_warn(&ndev->dev, "TxFD exhausted.\n");
1483 netif_stop_queue(ndev);
1484 spin_unlock_irqrestore(&mdp->lock, flags);
1485 return NETDEV_TX_BUSY;
1486 }
1487 }
1488 spin_unlock_irqrestore(&mdp->lock, flags);
1489
1490 entry = mdp->cur_tx % TX_RING_SIZE;
1491 mdp->tx_skbuff[entry] = skb;
1492 txdesc = &mdp->tx_ring[entry];
1493 /* soft swap. */
1494 if (!mdp->cd->hw_swap)
1495 sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)),
1496 skb->len + 2);
1497 txdesc->addr = dma_map_single(&ndev->dev, skb->data, skb->len,
1498 DMA_TO_DEVICE);
1499 if (skb->len < ETHERSMALL)
1500 txdesc->buffer_length = ETHERSMALL;
1501 else
1502 txdesc->buffer_length = skb->len;
1503
1504 if (entry >= TX_RING_SIZE - 1)
1505 txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE);
1506 else
1507 txdesc->status |= cpu_to_edmac(mdp, TD_TACT);
1508
1509 mdp->cur_tx++;
1510
1511 if (!(sh_eth_read(ndev, EDTRR) & sh_eth_get_edtrr_trns(mdp)))
1512 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR);
1513
1514 return NETDEV_TX_OK;
1515 }
1516
1517 /* device close function */
1518 static int sh_eth_close(struct net_device *ndev)
1519 {
1520 struct sh_eth_private *mdp = netdev_priv(ndev);
1521 int ringsize;
1522
1523 netif_stop_queue(ndev);
1524
1525 /* Disable interrupts by clearing the interrupt mask. */
1526 sh_eth_write(ndev, 0x0000, EESIPR);
1527
1528 /* Stop the chip's Tx and Rx processes. */
1529 sh_eth_write(ndev, 0, EDTRR);
1530 sh_eth_write(ndev, 0, EDRRR);
1531
1532 /* PHY Disconnect */
1533 if (mdp->phydev) {
1534 phy_stop(mdp->phydev);
1535 phy_disconnect(mdp->phydev);
1536 }
1537
1538 free_irq(ndev->irq, ndev);
1539
1540 del_timer_sync(&mdp->timer);
1541
1542 /* Free all the skbuffs in the Rx queue. */
1543 sh_eth_ring_free(ndev);
1544
1545 /* free DMA buffer */
1546 ringsize = sizeof(struct sh_eth_rxdesc) * RX_RING_SIZE;
1547 dma_free_coherent(NULL, ringsize, mdp->rx_ring, mdp->rx_desc_dma);
1548
1549 /* free DMA buffer */
1550 ringsize = sizeof(struct sh_eth_txdesc) * TX_RING_SIZE;
1551 dma_free_coherent(NULL, ringsize, mdp->tx_ring, mdp->tx_desc_dma);
1552
1553 pm_runtime_put_sync(&mdp->pdev->dev);
1554
1555 return 0;
1556 }
1557
1558 static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
1559 {
1560 struct sh_eth_private *mdp = netdev_priv(ndev);
1561
1562 pm_runtime_get_sync(&mdp->pdev->dev);
1563
1564 mdp->stats.tx_dropped += sh_eth_read(ndev, TROCR);
1565 sh_eth_write(ndev, 0, TROCR); /* (write clear) */
1566 mdp->stats.collisions += sh_eth_read(ndev, CDCR);
1567 sh_eth_write(ndev, 0, CDCR); /* (write clear) */
1568 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR);
1569 sh_eth_write(ndev, 0, LCCR); /* (write clear) */
1570 if (sh_eth_is_gether(mdp)) {
1571 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR);
1572 sh_eth_write(ndev, 0, CERCR); /* (write clear) */
1573 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR);
1574 sh_eth_write(ndev, 0, CEECR); /* (write clear) */
1575 } else {
1576 mdp->stats.tx_carrier_errors += sh_eth_read(ndev, CNDCR);
1577 sh_eth_write(ndev, 0, CNDCR); /* (write clear) */
1578 }
1579 pm_runtime_put_sync(&mdp->pdev->dev);
1580
1581 return &mdp->stats;
1582 }
1583
1584 /* ioctl to device funciotn*/
1585 static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq,
1586 int cmd)
1587 {
1588 struct sh_eth_private *mdp = netdev_priv(ndev);
1589 struct phy_device *phydev = mdp->phydev;
1590
1591 if (!netif_running(ndev))
1592 return -EINVAL;
1593
1594 if (!phydev)
1595 return -ENODEV;
1596
1597 return phy_mii_ioctl(phydev, rq, cmd);
1598 }
1599
1600 #if defined(SH_ETH_HAS_TSU)
1601 /* Multicast reception directions set */
1602 static void sh_eth_set_multicast_list(struct net_device *ndev)
1603 {
1604 if (ndev->flags & IFF_PROMISC) {
1605 /* Set promiscuous. */
1606 sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_MCT) |
1607 ECMR_PRM, ECMR);
1608 } else {
1609 /* Normal, unicast/broadcast-only mode. */
1610 sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) |
1611 ECMR_MCT, ECMR);
1612 }
1613 }
1614 #endif /* SH_ETH_HAS_TSU */
1615
1616 /* SuperH's TSU register init function */
1617 static void sh_eth_tsu_init(struct sh_eth_private *mdp)
1618 {
1619 sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */
1620 sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */
1621 sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */
1622 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
1623 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
1624 sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
1625 sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
1626 sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
1627 sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
1628 sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
1629 if (sh_eth_is_gether(mdp)) {
1630 sh_eth_tsu_write(mdp, 0, TSU_QTAG0); /* Disable QTAG(0->1) */
1631 sh_eth_tsu_write(mdp, 0, TSU_QTAG1); /* Disable QTAG(1->0) */
1632 } else {
1633 sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */
1634 sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */
1635 }
1636 sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */
1637 sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */
1638 sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
1639 sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */
1640 sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */
1641 sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */
1642 sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */
1643 }
1644
1645 /* MDIO bus release function */
1646 static int sh_mdio_release(struct net_device *ndev)
1647 {
1648 struct mii_bus *bus = dev_get_drvdata(&ndev->dev);
1649
1650 /* unregister mdio bus */
1651 mdiobus_unregister(bus);
1652
1653 /* remove mdio bus info from net_device */
1654 dev_set_drvdata(&ndev->dev, NULL);
1655
1656 /* free interrupts memory */
1657 kfree(bus->irq);
1658
1659 /* free bitbang info */
1660 free_mdio_bitbang(bus);
1661
1662 return 0;
1663 }
1664
1665 /* MDIO bus init function */
1666 static int sh_mdio_init(struct net_device *ndev, int id,
1667 struct sh_eth_plat_data *pd)
1668 {
1669 int ret, i;
1670 struct bb_info *bitbang;
1671 struct sh_eth_private *mdp = netdev_priv(ndev);
1672
1673 /* create bit control struct for PHY */
1674 bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL);
1675 if (!bitbang) {
1676 ret = -ENOMEM;
1677 goto out;
1678 }
1679
1680 /* bitbang init */
1681 bitbang->addr = ndev->base_addr + mdp->reg_offset[PIR];
1682 bitbang->set_gate = pd->set_mdio_gate;
1683 bitbang->mdi_msk = 0x08;
1684 bitbang->mdo_msk = 0x04;
1685 bitbang->mmd_msk = 0x02;/* MMD */
1686 bitbang->mdc_msk = 0x01;
1687 bitbang->ctrl.ops = &bb_ops;
1688
1689 /* MII controller setting */
1690 mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
1691 if (!mdp->mii_bus) {
1692 ret = -ENOMEM;
1693 goto out_free_bitbang;
1694 }
1695
1696 /* Hook up MII support for ethtool */
1697 mdp->mii_bus->name = "sh_mii";
1698 mdp->mii_bus->parent = &ndev->dev;
1699 snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%x", id);
1700
1701 /* PHY IRQ */
1702 mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
1703 if (!mdp->mii_bus->irq) {
1704 ret = -ENOMEM;
1705 goto out_free_bus;
1706 }
1707
1708 for (i = 0; i < PHY_MAX_ADDR; i++)
1709 mdp->mii_bus->irq[i] = PHY_POLL;
1710
1711 /* regist mdio bus */
1712 ret = mdiobus_register(mdp->mii_bus);
1713 if (ret)
1714 goto out_free_irq;
1715
1716 dev_set_drvdata(&ndev->dev, mdp->mii_bus);
1717
1718 return 0;
1719
1720 out_free_irq:
1721 kfree(mdp->mii_bus->irq);
1722
1723 out_free_bus:
1724 free_mdio_bitbang(mdp->mii_bus);
1725
1726 out_free_bitbang:
1727 kfree(bitbang);
1728
1729 out:
1730 return ret;
1731 }
1732
1733 static const u16 *sh_eth_get_register_offset(int register_type)
1734 {
1735 const u16 *reg_offset = NULL;
1736
1737 switch (register_type) {
1738 case SH_ETH_REG_GIGABIT:
1739 reg_offset = sh_eth_offset_gigabit;
1740 break;
1741 case SH_ETH_REG_FAST_SH4:
1742 reg_offset = sh_eth_offset_fast_sh4;
1743 break;
1744 case SH_ETH_REG_FAST_SH3_SH2:
1745 reg_offset = sh_eth_offset_fast_sh3_sh2;
1746 break;
1747 default:
1748 printk(KERN_ERR "Unknown register type (%d)\n", register_type);
1749 break;
1750 }
1751
1752 return reg_offset;
1753 }
1754
1755 static const struct net_device_ops sh_eth_netdev_ops = {
1756 .ndo_open = sh_eth_open,
1757 .ndo_stop = sh_eth_close,
1758 .ndo_start_xmit = sh_eth_start_xmit,
1759 .ndo_get_stats = sh_eth_get_stats,
1760 #if defined(SH_ETH_HAS_TSU)
1761 .ndo_set_multicast_list = sh_eth_set_multicast_list,
1762 #endif
1763 .ndo_tx_timeout = sh_eth_tx_timeout,
1764 .ndo_do_ioctl = sh_eth_do_ioctl,
1765 .ndo_validate_addr = eth_validate_addr,
1766 .ndo_set_mac_address = eth_mac_addr,
1767 .ndo_change_mtu = eth_change_mtu,
1768 };
1769
1770 static int sh_eth_drv_probe(struct platform_device *pdev)
1771 {
1772 int ret, devno = 0;
1773 struct resource *res;
1774 struct net_device *ndev = NULL;
1775 struct sh_eth_private *mdp = NULL;
1776 struct sh_eth_plat_data *pd;
1777
1778 /* get base addr */
1779 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1780 if (unlikely(res == NULL)) {
1781 dev_err(&pdev->dev, "invalid resource\n");
1782 ret = -EINVAL;
1783 goto out;
1784 }
1785
1786 ndev = alloc_etherdev(sizeof(struct sh_eth_private));
1787 if (!ndev) {
1788 dev_err(&pdev->dev, "Could not allocate device.\n");
1789 ret = -ENOMEM;
1790 goto out;
1791 }
1792
1793 /* The sh Ether-specific entries in the device structure. */
1794 ndev->base_addr = res->start;
1795 devno = pdev->id;
1796 if (devno < 0)
1797 devno = 0;
1798
1799 ndev->dma = -1;
1800 ret = platform_get_irq(pdev, 0);
1801 if (ret < 0) {
1802 ret = -ENODEV;
1803 goto out_release;
1804 }
1805 ndev->irq = ret;
1806
1807 SET_NETDEV_DEV(ndev, &pdev->dev);
1808
1809 /* Fill in the fields of the device structure with ethernet values. */
1810 ether_setup(ndev);
1811
1812 mdp = netdev_priv(ndev);
1813 spin_lock_init(&mdp->lock);
1814 mdp->pdev = pdev;
1815 pm_runtime_enable(&pdev->dev);
1816 pm_runtime_resume(&pdev->dev);
1817
1818 pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data);
1819 /* get PHY ID */
1820 mdp->phy_id = pd->phy;
1821 mdp->phy_interface = pd->phy_interface;
1822 /* EDMAC endian */
1823 mdp->edmac_endian = pd->edmac_endian;
1824 mdp->no_ether_link = pd->no_ether_link;
1825 mdp->ether_link_active_low = pd->ether_link_active_low;
1826 mdp->reg_offset = sh_eth_get_register_offset(pd->register_type);
1827
1828 /* set cpu data */
1829 #if defined(SH_ETH_HAS_BOTH_MODULES)
1830 mdp->cd = sh_eth_get_cpu_data(mdp);
1831 #else
1832 mdp->cd = &sh_eth_my_cpu_data;
1833 #endif
1834 sh_eth_set_default_cpu_data(mdp->cd);
1835
1836 /* set function */
1837 ndev->netdev_ops = &sh_eth_netdev_ops;
1838 SET_ETHTOOL_OPS(ndev, &sh_eth_ethtool_ops);
1839 ndev->watchdog_timeo = TX_TIMEOUT;
1840
1841 /* debug message level */
1842 mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
1843 mdp->post_rx = POST_RX >> (devno << 1);
1844 mdp->post_fw = POST_FW >> (devno << 1);
1845
1846 /* read and set MAC address */
1847 read_mac_address(ndev, pd->mac_addr);
1848
1849 /* First device only init */
1850 if (!devno) {
1851 if (mdp->cd->tsu) {
1852 struct resource *rtsu;
1853 rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1854 if (!rtsu) {
1855 dev_err(&pdev->dev, "Not found TSU resource\n");
1856 goto out_release;
1857 }
1858 mdp->tsu_addr = ioremap(rtsu->start,
1859 resource_size(rtsu));
1860 }
1861 if (mdp->cd->chip_reset)
1862 mdp->cd->chip_reset(ndev);
1863
1864 if (mdp->cd->tsu) {
1865 /* TSU init (Init only)*/
1866 sh_eth_tsu_init(mdp);
1867 }
1868 }
1869
1870 /* network device register */
1871 ret = register_netdev(ndev);
1872 if (ret)
1873 goto out_release;
1874
1875 /* mdio bus init */
1876 ret = sh_mdio_init(ndev, pdev->id, pd);
1877 if (ret)
1878 goto out_unregister;
1879
1880 /* print device information */
1881 pr_info("Base address at 0x%x, %pM, IRQ %d.\n",
1882 (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
1883
1884 platform_set_drvdata(pdev, ndev);
1885
1886 return ret;
1887
1888 out_unregister:
1889 unregister_netdev(ndev);
1890
1891 out_release:
1892 /* net_dev free */
1893 if (mdp && mdp->tsu_addr)
1894 iounmap(mdp->tsu_addr);
1895 if (ndev)
1896 free_netdev(ndev);
1897
1898 out:
1899 return ret;
1900 }
1901
1902 static int sh_eth_drv_remove(struct platform_device *pdev)
1903 {
1904 struct net_device *ndev = platform_get_drvdata(pdev);
1905 struct sh_eth_private *mdp = netdev_priv(ndev);
1906
1907 iounmap(mdp->tsu_addr);
1908 sh_mdio_release(ndev);
1909 unregister_netdev(ndev);
1910 pm_runtime_disable(&pdev->dev);
1911 free_netdev(ndev);
1912 platform_set_drvdata(pdev, NULL);
1913
1914 return 0;
1915 }
1916
1917 static int sh_eth_runtime_nop(struct device *dev)
1918 {
1919 /*
1920 * Runtime PM callback shared between ->runtime_suspend()
1921 * and ->runtime_resume(). Simply returns success.
1922 *
1923 * This driver re-initializes all registers after
1924 * pm_runtime_get_sync() anyway so there is no need
1925 * to save and restore registers here.
1926 */
1927 return 0;
1928 }
1929
1930 static struct dev_pm_ops sh_eth_dev_pm_ops = {
1931 .runtime_suspend = sh_eth_runtime_nop,
1932 .runtime_resume = sh_eth_runtime_nop,
1933 };
1934
1935 static struct platform_driver sh_eth_driver = {
1936 .probe = sh_eth_drv_probe,
1937 .remove = sh_eth_drv_remove,
1938 .driver = {
1939 .name = CARDNAME,
1940 .pm = &sh_eth_dev_pm_ops,
1941 },
1942 };
1943
1944 static int __init sh_eth_init(void)
1945 {
1946 return platform_driver_register(&sh_eth_driver);
1947 }
1948
1949 static void __exit sh_eth_cleanup(void)
1950 {
1951 platform_driver_unregister(&sh_eth_driver);
1952 }
1953
1954 module_init(sh_eth_init);
1955 module_exit(sh_eth_cleanup);
1956
1957 MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
1958 MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
1959 MODULE_LICENSE("GPL v2");
x86 "subsystem" repository