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