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11#include "ssb_private.h"
12
13#include <linux/ssb/ssb.h>
14#include <linux/delay.h>
15#include <linux/io.h>
16#include <linux/etherdevice.h>
17
18#include <pcmcia/cistpl.h>
19#include <pcmcia/ciscode.h>
20#include <pcmcia/ds.h>
21#include <pcmcia/cisreg.h>
22
23
24
25#define SSB_VERBOSE_PCMCIACORESWITCH_DEBUG 0
26
27
28
29#define SSB_PCMCIA_ADDRESS0 0x2E
30#define SSB_PCMCIA_ADDRESS1 0x30
31#define SSB_PCMCIA_ADDRESS2 0x32
32#define SSB_PCMCIA_MEMSEG 0x34
33#define SSB_PCMCIA_SPROMCTL 0x36
34#define SSB_PCMCIA_SPROMCTL_IDLE 0
35#define SSB_PCMCIA_SPROMCTL_WRITE 1
36#define SSB_PCMCIA_SPROMCTL_READ 2
37#define SSB_PCMCIA_SPROMCTL_WRITEEN 4
38#define SSB_PCMCIA_SPROMCTL_WRITEDIS 7
39#define SSB_PCMCIA_SPROMCTL_DONE 8
40#define SSB_PCMCIA_SPROM_DATALO 0x38
41#define SSB_PCMCIA_SPROM_DATAHI 0x3A
42#define SSB_PCMCIA_SPROM_ADDRLO 0x3C
43#define SSB_PCMCIA_SPROM_ADDRHI 0x3E
44
45
46#define SSB_PCMCIA_CIS 0x80
47#define SSB_PCMCIA_CIS_ID 0x01
48#define SSB_PCMCIA_CIS_BOARDREV 0x02
49#define SSB_PCMCIA_CIS_PA 0x03
50#define SSB_PCMCIA_CIS_PA_PA0B0_LO 0
51#define SSB_PCMCIA_CIS_PA_PA0B0_HI 1
52#define SSB_PCMCIA_CIS_PA_PA0B1_LO 2
53#define SSB_PCMCIA_CIS_PA_PA0B1_HI 3
54#define SSB_PCMCIA_CIS_PA_PA0B2_LO 4
55#define SSB_PCMCIA_CIS_PA_PA0B2_HI 5
56#define SSB_PCMCIA_CIS_PA_ITSSI 6
57#define SSB_PCMCIA_CIS_PA_MAXPOW 7
58#define SSB_PCMCIA_CIS_OEMNAME 0x04
59#define SSB_PCMCIA_CIS_CCODE 0x05
60#define SSB_PCMCIA_CIS_ANTENNA 0x06
61#define SSB_PCMCIA_CIS_ANTGAIN 0x07
62#define SSB_PCMCIA_CIS_BFLAGS 0x08
63#define SSB_PCMCIA_CIS_LEDS 0x09
64
65
66#define SSB_PCMCIA_SPROM_SIZE 256
67#define SSB_PCMCIA_SPROM_SIZE_BYTES (SSB_PCMCIA_SPROM_SIZE * sizeof(u16))
68
69
70
71static int ssb_pcmcia_cfg_write(struct ssb_bus *bus, u8 offset, u8 value)
72{
73 int res;
74
75 res = pcmcia_write_config_byte(bus->host_pcmcia, offset, value);
76 if (unlikely(res != 0))
77 return -EBUSY;
78
79 return 0;
80}
81
82
83static int ssb_pcmcia_cfg_read(struct ssb_bus *bus, u8 offset, u8 *value)
84{
85 int res;
86
87 res = pcmcia_read_config_byte(bus->host_pcmcia, offset, value);
88 if (unlikely(res != 0))
89 return -EBUSY;
90
91 return 0;
92}
93
94int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus,
95 u8 coreidx)
96{
97 int err;
98 int attempts = 0;
99 u32 cur_core;
100 u32 addr;
101 u32 read_addr;
102 u8 val;
103
104 addr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE;
105 while (1) {
106 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS0,
107 (addr & 0x0000F000) >> 12);
108 if (err)
109 goto error;
110 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS1,
111 (addr & 0x00FF0000) >> 16);
112 if (err)
113 goto error;
114 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS2,
115 (addr & 0xFF000000) >> 24);
116 if (err)
117 goto error;
118
119 read_addr = 0;
120
121 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS0, &val);
122 if (err)
123 goto error;
124 read_addr |= ((u32)(val & 0x0F)) << 12;
125 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS1, &val);
126 if (err)
127 goto error;
128 read_addr |= ((u32)val) << 16;
129 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS2, &val);
130 if (err)
131 goto error;
132 read_addr |= ((u32)val) << 24;
133
134 cur_core = (read_addr - SSB_ENUM_BASE) / SSB_CORE_SIZE;
135 if (cur_core == coreidx)
136 break;
137
138 err = -ETIMEDOUT;
139 if (attempts++ > SSB_BAR0_MAX_RETRIES)
140 goto error;
141 udelay(10);
142 }
143
144 return 0;
145error:
146 pr_err("Failed to switch to core %u\n", coreidx);
147 return err;
148}
149
150static int ssb_pcmcia_switch_core(struct ssb_bus *bus, struct ssb_device *dev)
151{
152 int err;
153
154#if SSB_VERBOSE_PCMCIACORESWITCH_DEBUG
155 pr_info("Switching to %s core, index %d\n",
156 ssb_core_name(dev->id.coreid), dev->core_index);
157#endif
158
159 err = ssb_pcmcia_switch_coreidx(bus, dev->core_index);
160 if (!err)
161 bus->mapped_device = dev;
162
163 return err;
164}
165
166int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg)
167{
168 int attempts = 0;
169 int err;
170 u8 val;
171
172 WARN_ON((seg != 0) && (seg != 1));
173 while (1) {
174 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_MEMSEG, seg);
175 if (err)
176 goto error;
177 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_MEMSEG, &val);
178 if (err)
179 goto error;
180 if (val == seg)
181 break;
182
183 err = -ETIMEDOUT;
184 if (unlikely(attempts++ > SSB_BAR0_MAX_RETRIES))
185 goto error;
186 udelay(10);
187 }
188 bus->mapped_pcmcia_seg = seg;
189
190 return 0;
191error:
192 pr_err("Failed to switch pcmcia segment\n");
193 return err;
194}
195
196static int select_core_and_segment(struct ssb_device *dev,
197 u16 *offset)
198{
199 struct ssb_bus *bus = dev->bus;
200 int err;
201 u8 need_segment;
202
203 if (*offset >= 0x800) {
204 *offset -= 0x800;
205 need_segment = 1;
206 } else
207 need_segment = 0;
208
209 if (unlikely(dev != bus->mapped_device)) {
210 err = ssb_pcmcia_switch_core(bus, dev);
211 if (unlikely(err))
212 return err;
213 }
214 if (unlikely(need_segment != bus->mapped_pcmcia_seg)) {
215 err = ssb_pcmcia_switch_segment(bus, need_segment);
216 if (unlikely(err))
217 return err;
218 }
219
220 return 0;
221}
222
223static u8 ssb_pcmcia_read8(struct ssb_device *dev, u16 offset)
224{
225 struct ssb_bus *bus = dev->bus;
226 unsigned long flags;
227 int err;
228 u8 value = 0xFF;
229
230 spin_lock_irqsave(&bus->bar_lock, flags);
231 err = select_core_and_segment(dev, &offset);
232 if (likely(!err))
233 value = readb(bus->mmio + offset);
234 spin_unlock_irqrestore(&bus->bar_lock, flags);
235
236 return value;
237}
238
239static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset)
240{
241 struct ssb_bus *bus = dev->bus;
242 unsigned long flags;
243 int err;
244 u16 value = 0xFFFF;
245
246 spin_lock_irqsave(&bus->bar_lock, flags);
247 err = select_core_and_segment(dev, &offset);
248 if (likely(!err))
249 value = readw(bus->mmio + offset);
250 spin_unlock_irqrestore(&bus->bar_lock, flags);
251
252 return value;
253}
254
255static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset)
256{
257 struct ssb_bus *bus = dev->bus;
258 unsigned long flags;
259 int err;
260 u32 lo = 0xFFFFFFFF, hi = 0xFFFFFFFF;
261
262 spin_lock_irqsave(&bus->bar_lock, flags);
263 err = select_core_and_segment(dev, &offset);
264 if (likely(!err)) {
265 lo = readw(bus->mmio + offset);
266 hi = readw(bus->mmio + offset + 2);
267 }
268 spin_unlock_irqrestore(&bus->bar_lock, flags);
269
270 return (lo | (hi << 16));
271}
272
273#ifdef CONFIG_SSB_BLOCKIO
274static void ssb_pcmcia_block_read(struct ssb_device *dev, void *buffer,
275 size_t count, u16 offset, u8 reg_width)
276{
277 struct ssb_bus *bus = dev->bus;
278 unsigned long flags;
279 void __iomem *addr = bus->mmio + offset;
280 int err;
281
282 spin_lock_irqsave(&bus->bar_lock, flags);
283 err = select_core_and_segment(dev, &offset);
284 if (unlikely(err)) {
285 memset(buffer, 0xFF, count);
286 goto unlock;
287 }
288 switch (reg_width) {
289 case sizeof(u8): {
290 u8 *buf = buffer;
291
292 while (count) {
293 *buf = __raw_readb(addr);
294 buf++;
295 count--;
296 }
297 break;
298 }
299 case sizeof(u16): {
300 __le16 *buf = buffer;
301
302 WARN_ON(count & 1);
303 while (count) {
304 *buf = (__force __le16)__raw_readw(addr);
305 buf++;
306 count -= 2;
307 }
308 break;
309 }
310 case sizeof(u32): {
311 __le16 *buf = buffer;
312
313 WARN_ON(count & 3);
314 while (count) {
315 *buf = (__force __le16)__raw_readw(addr);
316 buf++;
317 *buf = (__force __le16)__raw_readw(addr + 2);
318 buf++;
319 count -= 4;
320 }
321 break;
322 }
323 default:
324 WARN_ON(1);
325 }
326unlock:
327 spin_unlock_irqrestore(&bus->bar_lock, flags);
328}
329#endif
330
331static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value)
332{
333 struct ssb_bus *bus = dev->bus;
334 unsigned long flags;
335 int err;
336
337 spin_lock_irqsave(&bus->bar_lock, flags);
338 err = select_core_and_segment(dev, &offset);
339 if (likely(!err))
340 writeb(value, bus->mmio + offset);
341 spin_unlock_irqrestore(&bus->bar_lock, flags);
342}
343
344static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value)
345{
346 struct ssb_bus *bus = dev->bus;
347 unsigned long flags;
348 int err;
349
350 spin_lock_irqsave(&bus->bar_lock, flags);
351 err = select_core_and_segment(dev, &offset);
352 if (likely(!err))
353 writew(value, bus->mmio + offset);
354 spin_unlock_irqrestore(&bus->bar_lock, flags);
355}
356
357static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value)
358{
359 struct ssb_bus *bus = dev->bus;
360 unsigned long flags;
361 int err;
362
363 spin_lock_irqsave(&bus->bar_lock, flags);
364 err = select_core_and_segment(dev, &offset);
365 if (likely(!err)) {
366 writew((value & 0x0000FFFF), bus->mmio + offset);
367 writew(((value & 0xFFFF0000) >> 16), bus->mmio + offset + 2);
368 }
369 spin_unlock_irqrestore(&bus->bar_lock, flags);
370}
371
372#ifdef CONFIG_SSB_BLOCKIO
373static void ssb_pcmcia_block_write(struct ssb_device *dev, const void *buffer,
374 size_t count, u16 offset, u8 reg_width)
375{
376 struct ssb_bus *bus = dev->bus;
377 unsigned long flags;
378 void __iomem *addr = bus->mmio + offset;
379 int err;
380
381 spin_lock_irqsave(&bus->bar_lock, flags);
382 err = select_core_and_segment(dev, &offset);
383 if (unlikely(err))
384 goto unlock;
385 switch (reg_width) {
386 case sizeof(u8): {
387 const u8 *buf = buffer;
388
389 while (count) {
390 __raw_writeb(*buf, addr);
391 buf++;
392 count--;
393 }
394 break;
395 }
396 case sizeof(u16): {
397 const __le16 *buf = buffer;
398
399 WARN_ON(count & 1);
400 while (count) {
401 __raw_writew((__force u16)(*buf), addr);
402 buf++;
403 count -= 2;
404 }
405 break;
406 }
407 case sizeof(u32): {
408 const __le16 *buf = buffer;
409
410 WARN_ON(count & 3);
411 while (count) {
412 __raw_writew((__force u16)(*buf), addr);
413 buf++;
414 __raw_writew((__force u16)(*buf), addr + 2);
415 buf++;
416 count -= 4;
417 }
418 break;
419 }
420 default:
421 WARN_ON(1);
422 }
423unlock:
424 spin_unlock_irqrestore(&bus->bar_lock, flags);
425}
426#endif
427
428
429const struct ssb_bus_ops ssb_pcmcia_ops = {
430 .read8 = ssb_pcmcia_read8,
431 .read16 = ssb_pcmcia_read16,
432 .read32 = ssb_pcmcia_read32,
433 .write8 = ssb_pcmcia_write8,
434 .write16 = ssb_pcmcia_write16,
435 .write32 = ssb_pcmcia_write32,
436#ifdef CONFIG_SSB_BLOCKIO
437 .block_read = ssb_pcmcia_block_read,
438 .block_write = ssb_pcmcia_block_write,
439#endif
440};
441
442static int ssb_pcmcia_sprom_command(struct ssb_bus *bus, u8 command)
443{
444 unsigned int i;
445 int err;
446 u8 value;
447
448 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROMCTL, command);
449 if (err)
450 return err;
451 for (i = 0; i < 1000; i++) {
452 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROMCTL, &value);
453 if (err)
454 return err;
455 if (value & SSB_PCMCIA_SPROMCTL_DONE)
456 return 0;
457 udelay(10);
458 }
459
460 return -ETIMEDOUT;
461}
462
463
464static int ssb_pcmcia_sprom_read(struct ssb_bus *bus, u16 offset, u16 *value)
465{
466 int err;
467 u8 lo, hi;
468
469 offset *= 2;
470
471 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO,
472 (offset & 0x00FF));
473 if (err)
474 return err;
475 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI,
476 (offset & 0xFF00) >> 8);
477 if (err)
478 return err;
479 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_READ);
480 if (err)
481 return err;
482 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATALO, &lo);
483 if (err)
484 return err;
485 err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATAHI, &hi);
486 if (err)
487 return err;
488 *value = (lo | (((u16)hi) << 8));
489
490 return 0;
491}
492
493
494static int ssb_pcmcia_sprom_write(struct ssb_bus *bus, u16 offset, u16 value)
495{
496 int err;
497
498 offset *= 2;
499
500 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO,
501 (offset & 0x00FF));
502 if (err)
503 return err;
504 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI,
505 (offset & 0xFF00) >> 8);
506 if (err)
507 return err;
508 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATALO,
509 (value & 0x00FF));
510 if (err)
511 return err;
512 err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATAHI,
513 (value & 0xFF00) >> 8);
514 if (err)
515 return err;
516 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITE);
517 if (err)
518 return err;
519 msleep(20);
520
521 return 0;
522}
523
524
525static int ssb_pcmcia_sprom_read_all(struct ssb_bus *bus, u16 *sprom)
526{
527 int err, i;
528
529 for (i = 0; i < SSB_PCMCIA_SPROM_SIZE; i++) {
530 err = ssb_pcmcia_sprom_read(bus, i, &sprom[i]);
531 if (err)
532 return err;
533 }
534
535 return 0;
536}
537
538
539static int ssb_pcmcia_sprom_write_all(struct ssb_bus *bus, const u16 *sprom)
540{
541 int i, err;
542 bool failed = 0;
543 size_t size = SSB_PCMCIA_SPROM_SIZE;
544
545 pr_notice("Writing SPROM. Do NOT turn off the power! Please stand by...\n");
546 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEEN);
547 if (err) {
548 pr_notice("Could not enable SPROM write access\n");
549 return -EBUSY;
550 }
551 pr_notice("[ 0%%");
552 msleep(500);
553 for (i = 0; i < size; i++) {
554 if (i == size / 4)
555 pr_cont("25%%");
556 else if (i == size / 2)
557 pr_cont("50%%");
558 else if (i == (size * 3) / 4)
559 pr_cont("75%%");
560 else if (i % 2)
561 pr_cont(".");
562 err = ssb_pcmcia_sprom_write(bus, i, sprom[i]);
563 if (err) {
564 pr_notice("Failed to write to SPROM\n");
565 failed = 1;
566 break;
567 }
568 }
569 err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEDIS);
570 if (err) {
571 pr_notice("Could not disable SPROM write access\n");
572 failed = 1;
573 }
574 msleep(500);
575 if (!failed) {
576 pr_cont("100%% ]\n");
577 pr_notice("SPROM written\n");
578 }
579
580 return failed ? -EBUSY : 0;
581}
582
583static int ssb_pcmcia_sprom_check_crc(const u16 *sprom, size_t size)
584{
585
586 return 0;
587}
588
589#define GOTO_ERROR_ON(condition, description) do { \
590 if (unlikely(condition)) { \
591 error_description = description; \
592 goto error; \
593 } \
594 } while (0)
595
596static int ssb_pcmcia_get_mac(struct pcmcia_device *p_dev,
597 tuple_t *tuple,
598 void *priv)
599{
600 struct ssb_sprom *sprom = priv;
601
602 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
603 return -EINVAL;
604 if (tuple->TupleDataLen != ETH_ALEN + 2)
605 return -EINVAL;
606 if (tuple->TupleData[1] != ETH_ALEN)
607 return -EINVAL;
608 memcpy(sprom->il0mac, &tuple->TupleData[2], ETH_ALEN);
609 return 0;
610};
611
612static int ssb_pcmcia_do_get_invariants(struct pcmcia_device *p_dev,
613 tuple_t *tuple,
614 void *priv)
615{
616 struct ssb_init_invariants *iv = priv;
617 struct ssb_sprom *sprom = &iv->sprom;
618 struct ssb_boardinfo *bi = &iv->boardinfo;
619 const char *error_description;
620
621 GOTO_ERROR_ON(tuple->TupleDataLen < 1, "VEN tpl < 1");
622 switch (tuple->TupleData[0]) {
623 case SSB_PCMCIA_CIS_ID:
624 GOTO_ERROR_ON((tuple->TupleDataLen != 5) &&
625 (tuple->TupleDataLen != 7),
626 "id tpl size");
627 bi->vendor = tuple->TupleData[1] |
628 ((u16)tuple->TupleData[2] << 8);
629 break;
630 case SSB_PCMCIA_CIS_BOARDREV:
631 GOTO_ERROR_ON(tuple->TupleDataLen != 2,
632 "boardrev tpl size");
633 sprom->board_rev = tuple->TupleData[1];
634 break;
635 case SSB_PCMCIA_CIS_PA:
636 GOTO_ERROR_ON((tuple->TupleDataLen != 9) &&
637 (tuple->TupleDataLen != 10),
638 "pa tpl size");
639 sprom->pa0b0 = tuple->TupleData[1] |
640 ((u16)tuple->TupleData[2] << 8);
641 sprom->pa0b1 = tuple->TupleData[3] |
642 ((u16)tuple->TupleData[4] << 8);
643 sprom->pa0b2 = tuple->TupleData[5] |
644 ((u16)tuple->TupleData[6] << 8);
645 sprom->itssi_a = tuple->TupleData[7];
646 sprom->itssi_bg = tuple->TupleData[7];
647 sprom->maxpwr_a = tuple->TupleData[8];
648 sprom->maxpwr_bg = tuple->TupleData[8];
649 break;
650 case SSB_PCMCIA_CIS_OEMNAME:
651
652 break;
653 case SSB_PCMCIA_CIS_CCODE:
654 GOTO_ERROR_ON(tuple->TupleDataLen != 2,
655 "ccode tpl size");
656 sprom->country_code = tuple->TupleData[1];
657 break;
658 case SSB_PCMCIA_CIS_ANTENNA:
659 GOTO_ERROR_ON(tuple->TupleDataLen != 2,
660 "ant tpl size");
661 sprom->ant_available_a = tuple->TupleData[1];
662 sprom->ant_available_bg = tuple->TupleData[1];
663 break;
664 case SSB_PCMCIA_CIS_ANTGAIN:
665 GOTO_ERROR_ON(tuple->TupleDataLen != 2,
666 "antg tpl size");
667 sprom->antenna_gain.a0 = tuple->TupleData[1];
668 sprom->antenna_gain.a1 = tuple->TupleData[1];
669 sprom->antenna_gain.a2 = tuple->TupleData[1];
670 sprom->antenna_gain.a3 = tuple->TupleData[1];
671 break;
672 case SSB_PCMCIA_CIS_BFLAGS:
673 GOTO_ERROR_ON((tuple->TupleDataLen != 3) &&
674 (tuple->TupleDataLen != 5),
675 "bfl tpl size");
676 sprom->boardflags_lo = tuple->TupleData[1] |
677 ((u16)tuple->TupleData[2] << 8);
678 break;
679 case SSB_PCMCIA_CIS_LEDS:
680 GOTO_ERROR_ON(tuple->TupleDataLen != 5,
681 "leds tpl size");
682 sprom->gpio0 = tuple->TupleData[1];
683 sprom->gpio1 = tuple->TupleData[2];
684 sprom->gpio2 = tuple->TupleData[3];
685 sprom->gpio3 = tuple->TupleData[4];
686 break;
687 }
688 return -ENOSPC;
689
690error:
691 pr_err("PCMCIA: Failed to fetch device invariants: %s\n",
692 error_description);
693 return -ENODEV;
694}
695
696
697int ssb_pcmcia_get_invariants(struct ssb_bus *bus,
698 struct ssb_init_invariants *iv)
699{
700 struct ssb_sprom *sprom = &iv->sprom;
701 int res;
702
703 memset(sprom, 0xFF, sizeof(*sprom));
704 sprom->revision = 1;
705 sprom->boardflags_lo = 0;
706 sprom->boardflags_hi = 0;
707
708
709 res = pcmcia_loop_tuple(bus->host_pcmcia, CISTPL_FUNCE,
710 ssb_pcmcia_get_mac, sprom);
711 if (res != 0) {
712 pr_err("PCMCIA: Failed to fetch MAC address\n");
713 return -ENODEV;
714 }
715
716
717 res = pcmcia_loop_tuple(bus->host_pcmcia, SSB_PCMCIA_CIS,
718 ssb_pcmcia_do_get_invariants, iv);
719 if ((res == 0) || (res == -ENOSPC))
720 return 0;
721
722 pr_err("PCMCIA: Failed to fetch device invariants\n");
723 return -ENODEV;
724}
725
726static ssize_t ssb_sprom_show(struct device *pcmciadev,
727 struct device_attribute *attr,
728 char *buf)
729{
730 struct pcmcia_device *pdev =
731 container_of(pcmciadev, struct pcmcia_device, dev);
732 struct ssb_bus *bus;
733
734 bus = ssb_pcmcia_dev_to_bus(pdev);
735 if (!bus)
736 return -ENODEV;
737
738 return ssb_attr_sprom_show(bus, buf,
739 ssb_pcmcia_sprom_read_all);
740}
741
742static ssize_t ssb_sprom_store(struct device *pcmciadev,
743 struct device_attribute *attr,
744 const char *buf, size_t count)
745{
746 struct pcmcia_device *pdev =
747 container_of(pcmciadev, struct pcmcia_device, dev);
748 struct ssb_bus *bus;
749
750 bus = ssb_pcmcia_dev_to_bus(pdev);
751 if (!bus)
752 return -ENODEV;
753
754 return ssb_attr_sprom_store(bus, buf, count,
755 ssb_pcmcia_sprom_check_crc,
756 ssb_pcmcia_sprom_write_all);
757}
758
759static DEVICE_ATTR_ADMIN_RW(ssb_sprom);
760
761static int ssb_pcmcia_cor_setup(struct ssb_bus *bus, u8 cor)
762{
763 u8 val;
764 int err;
765
766 err = ssb_pcmcia_cfg_read(bus, cor, &val);
767 if (err)
768 return err;
769 val &= ~COR_SOFT_RESET;
770 val |= COR_FUNC_ENA | COR_IREQ_ENA | COR_LEVEL_REQ;
771 err = ssb_pcmcia_cfg_write(bus, cor, val);
772 if (err)
773 return err;
774 msleep(40);
775
776 return 0;
777}
778
779
780int ssb_pcmcia_hardware_setup(struct ssb_bus *bus)
781{
782 int err;
783
784 if (bus->bustype != SSB_BUSTYPE_PCMCIA)
785 return 0;
786
787
788
789 ssb_pcmcia_switch_segment(bus, 0);
790
791 err = ssb_pcmcia_cor_setup(bus, CISREG_COR);
792 if (err)
793 return err;
794
795 err = ssb_pcmcia_cor_setup(bus, CISREG_COR + 0x80);
796 if (err)
797 return err;
798
799 return 0;
800}
801
802void ssb_pcmcia_exit(struct ssb_bus *bus)
803{
804 if (bus->bustype != SSB_BUSTYPE_PCMCIA)
805 return;
806
807 device_remove_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom);
808}
809
810int ssb_pcmcia_init(struct ssb_bus *bus)
811{
812 int err;
813
814 if (bus->bustype != SSB_BUSTYPE_PCMCIA)
815 return 0;
816
817 err = ssb_pcmcia_hardware_setup(bus);
818 if (err)
819 goto error;
820
821 bus->sprom_size = SSB_PCMCIA_SPROM_SIZE;
822 mutex_init(&bus->sprom_mutex);
823 err = device_create_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom);
824 if (err)
825 goto error;
826
827 return 0;
828error:
829 pr_err("Failed to initialize PCMCIA host device\n");
830 return err;
831}
832
