1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
|
/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* ****************** SDIO CARD Interface Functions **************************/
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/sched.h>
#include <linux/completion.h>
#include <defs.h>
#include <brcm_hw_ids.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include <soc.h>
#include "dhd.h"
#include "dhd_bus.h"
#include "dhd_dbg.h"
#include "sdio_host.h"
#define SDIOH_API_ACCESS_RETRY_LIMIT 2
#define BRCMF_SD_ERROR_VAL 0x0001 /* Error */
#define BRCMF_SD_INFO_VAL 0x0002 /* Info */
#ifdef BCMDBG
#define BRCMF_SD_ERROR(x) \
do { \
if ((brcmf_sdio_msglevel & BRCMF_SD_ERROR_VAL) && \
net_ratelimit()) \
printk x; \
} while (0)
#define BRCMF_SD_INFO(x) \
do { \
if ((brcmf_sdio_msglevel & BRCMF_SD_INFO_VAL) && \
net_ratelimit()) \
printk x; \
} while (0)
#else /* BCMDBG */
#define BRCMF_SD_ERROR(x)
#define BRCMF_SD_INFO(x)
#endif /* BCMDBG */
#define SDIOH_CMD_TYPE_NORMAL 0 /* Normal command */
#define SDIOH_CMD_TYPE_APPEND 1 /* Append command */
#define SDIOH_CMD_TYPE_CUTTHRU 2 /* Cut-through command */
#define SDIOH_DATA_PIO 0 /* PIO mode */
#define SDIOH_DATA_DMA 1 /* DMA mode */
struct brcmf_sdio_card {
bool init_success; /* underlying driver successfully attached */
void *sdioh; /* handler for sdioh */
u32 vendevid; /* Target Vendor and Device ID on SD bus */
bool regfail; /* Save status of last
reg_read/reg_write call */
u32 sbwad; /* Save backplane window address */
};
const uint brcmf_sdio_msglevel = BRCMF_SD_ERROR_VAL;
/* driver info, initialized when brcmf_sdio_register is called */
static struct brcmf_sdioh_driver drvinfo = { NULL, NULL };
/* Module parameters specific to each host-controller driver */
module_param(sd_f2_blocksize, int, 0);
struct brcmf_sdio_card*
brcmf_sdcard_attach(void *cfghdl, u32 *regsva)
{
struct brcmf_sdio_card *card;
card = kzalloc(sizeof(struct brcmf_sdio_card), GFP_ATOMIC);
if (card == NULL) {
BRCMF_SD_ERROR(("sdcard_attach: out of memory"));
return NULL;
}
card->sdioh = brcmf_sdioh_attach(cfghdl);
if (!card->sdioh) {
brcmf_sdcard_detach(card);
return NULL;
}
card->init_success = true;
*regsva = SI_ENUM_BASE;
/* Report the BAR, to fix if needed */
card->sbwad = SI_ENUM_BASE;
return card;
}
int brcmf_sdcard_detach(struct brcmf_sdio_card *card)
{
if (card != NULL) {
if (card->sdioh) {
brcmf_sdioh_detach(card->sdioh);
card->sdioh = NULL;
}
kfree(card);
}
return 0;
}
int
brcmf_sdcard_iovar_op(struct brcmf_sdio_card *card, const char *name,
void *params, int plen, void *arg, int len, bool set)
{
return brcmf_sdioh_iovar_op(card->sdioh, name, params, plen, arg,
len, set);
}
int brcmf_sdcard_intr_enable(struct brcmf_sdio_card *card)
{
return brcmf_sdioh_interrupt_set(card->sdioh, true);
}
int brcmf_sdcard_intr_disable(struct brcmf_sdio_card *card)
{
return brcmf_sdioh_interrupt_set(card->sdioh, false);
}
int brcmf_sdcard_intr_reg(struct brcmf_sdio_card *card,
void (*fn)(void *), void *argh)
{
return brcmf_sdioh_interrupt_register(card->sdioh, fn, argh);
}
int brcmf_sdcard_intr_dereg(struct brcmf_sdio_card *card)
{
return brcmf_sdioh_interrupt_deregister(card->sdioh);
}
u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
int *err)
{
int status;
s32 retry = 0;
u8 data = 0;
do {
if (retry) /* wait for 1 ms till bus get settled down */
udelay(1000);
status =
brcmf_sdioh_cfg_read(card->sdioh, fnc_num, addr,
(u8 *) &data);
} while (status != 0
&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
__func__, fnc_num, addr, data));
return data;
}
void
brcmf_sdcard_cfg_write(struct brcmf_sdio_card *card, uint fnc_num, u32 addr,
u8 data, int *err)
{
int status;
s32 retry = 0;
do {
if (retry) /* wait for 1 ms till bus get settled down */
udelay(1000);
status =
brcmf_sdioh_cfg_write(card->sdioh, fnc_num, addr,
(u8 *) &data);
} while (status != 0
&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
__func__, fnc_num, addr, data));
}
u32 brcmf_sdcard_cfg_read_word(struct brcmf_sdio_card *card, uint fnc_num,
u32 addr, int *err)
{
int status;
u32 data = 0;
status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_READ, fnc_num, addr, &data, 4);
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
__func__, fnc_num, addr, data));
return data;
}
void
brcmf_sdcard_cfg_write_word(struct brcmf_sdio_card *card, uint fnc_num,
u32 addr, u32 data, int *err)
{
int status;
status =
brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_WRITE, fnc_num, addr, &data, 4);
if (err)
*err = status;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
__func__, fnc_num, addr, data));
}
int brcmf_sdcard_cis_read(struct brcmf_sdio_card *card, uint func, u8 * cis,
uint length)
{
int status;
u8 *tmp_buf, *tmp_ptr;
u8 *ptr;
bool ascii = func & ~0xf;
func &= 0x7;
status = brcmf_sdioh_cis_read(card->sdioh, func, cis, length);
if (ascii) {
/* Move binary bits to tmp and format them
into the provided buffer. */
tmp_buf = kmalloc(length, GFP_ATOMIC);
if (tmp_buf == NULL) {
BRCMF_SD_ERROR(("%s: out of memory\n", __func__));
return -ENOMEM;
}
memcpy(tmp_buf, cis, length);
for (tmp_ptr = tmp_buf, ptr = cis; ptr < (cis + length - 4);
tmp_ptr++) {
ptr += sprintf((char *)ptr, "%.2x ", *tmp_ptr & 0xff);
if ((((tmp_ptr - tmp_buf) + 1) & 0xf) == 0)
ptr += sprintf((char *)ptr, "\n");
}
kfree(tmp_buf);
}
return status;
}
static int
brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_card *card, u32 address)
{
int err = 0;
brcmf_sdcard_cfg_write(card, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
(address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
if (!err)
brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
SBSDIO_FUNC1_SBADDRMID,
(address >> 16) & SBSDIO_SBADDRMID_MASK,
&err);
if (!err)
brcmf_sdcard_cfg_write(card, SDIO_FUNC_1,
SBSDIO_FUNC1_SBADDRHIGH,
(address >> 24) & SBSDIO_SBADDRHIGH_MASK,
&err);
return err;
}
u32 brcmf_sdcard_reg_read(struct brcmf_sdio_card *card, u32 addr, uint size)
{
int status;
u32 word = 0;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, ", __func__, addr));
if (bar0 != card->sbwad) {
if (brcmf_sdcard_set_sbaddr_window(card, bar0))
return 0xFFFFFFFF;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
if (size == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
status = brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_READ, SDIO_FUNC_1, addr, &word, size);
card->regfail = (status != 0);
BRCMF_SD_INFO(("u32data = 0x%x\n", word));
/* if ok, return appropriately masked word */
if (status == 0) {
switch (size) {
case sizeof(u8):
return word & 0xff;
case sizeof(u16):
return word & 0xffff;
case sizeof(u32):
return word;
default:
card->regfail = true;
}
}
/* otherwise, bad sdio access or invalid size */
BRCMF_SD_ERROR(("%s: error reading addr 0x%04x size %d\n", __func__,
addr, size));
return 0xFFFFFFFF;
}
u32 brcmf_sdcard_reg_write(struct brcmf_sdio_card *card, u32 addr, uint size,
u32 data)
{
int status;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
int err = 0;
BRCMF_SD_INFO(("%s:fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
__func__, addr, size * 8, data));
if (bar0 != card->sbwad) {
err = brcmf_sdcard_set_sbaddr_window(card, bar0);
if (err)
return err;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
if (size == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
status =
brcmf_sdioh_request_word(card->sdioh, SDIOH_CMD_TYPE_NORMAL,
SDIOH_WRITE, SDIO_FUNC_1, addr, &data, size);
card->regfail = (status != 0);
if (status == 0)
return 0;
BRCMF_SD_ERROR(("%s: error writing 0x%08x to addr 0x%04x size %d\n",
__func__, data, addr, size));
return 0xFFFFFFFF;
}
bool brcmf_sdcard_regfail(struct brcmf_sdio_card *card)
{
return card->regfail;
}
int
brcmf_sdcard_recv_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
uint flags,
u8 *buf, uint nbytes, struct sk_buff *pkt,
void (*complete)(void *handle, int status,
bool sync_waiting),
void *handle)
{
int status;
uint incr_fix;
uint width;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
int err = 0;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
__func__, fn, addr, nbytes));
/* Async not implemented yet */
if (flags & SDIO_REQ_ASYNC)
return -ENOTSUPP;
if (bar0 != card->sbwad) {
err = brcmf_sdcard_set_sbaddr_window(card, bar0);
if (err)
return err;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
if (width == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
status = brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
incr_fix, SDIOH_READ, fn, addr, width, nbytes, buf, pkt);
return status;
}
int
brcmf_sdcard_send_buf(struct brcmf_sdio_card *card, u32 addr, uint fn,
uint flags, u8 *buf, uint nbytes, void *pkt,
void (*complete)(void *handle, int status,
bool sync_waiting),
void *handle)
{
uint incr_fix;
uint width;
uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
int err = 0;
BRCMF_SD_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
__func__, fn, addr, nbytes));
/* Async not implemented yet */
if (flags & SDIO_REQ_ASYNC)
return -ENOTSUPP;
if (bar0 != card->sbwad) {
err = brcmf_sdcard_set_sbaddr_window(card, bar0);
if (err)
return err;
card->sbwad = bar0;
}
addr &= SBSDIO_SB_OFT_ADDR_MASK;
incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
if (width == 4)
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
return brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
incr_fix, SDIOH_WRITE, fn, addr, width, nbytes, buf, pkt);
}
int brcmf_sdcard_rwdata(struct brcmf_sdio_card *card, uint rw, u32 addr,
u8 *buf, uint nbytes)
{
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
return brcmf_sdioh_request_buffer(card->sdioh, SDIOH_DATA_PIO,
SDIOH_DATA_INC, (rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
addr, 4, nbytes, buf, NULL);
}
int brcmf_sdcard_abort(struct brcmf_sdio_card *card, uint fn)
{
return brcmf_sdioh_abort(card->sdioh, fn);
}
int brcmf_sdcard_query_device(struct brcmf_sdio_card *card)
{
card->vendevid = (PCI_VENDOR_ID_BROADCOM << 16) | 0;
return card->vendevid;
}
u32 brcmf_sdcard_cur_sbwad(struct brcmf_sdio_card *card)
{
return card->sbwad;
}
int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
{
u32 regs = 0;
struct brcmf_sdio_card *card = NULL;
u32 vendevid;
card = brcmf_sdcard_attach((void *)0, ®s);
if (!card) {
BRCMF_ERROR(("%s: attach failed\n", __func__));
goto err;
}
sdiodev->card = card;
/* Read the vendor/device ID from the CIS */
vendevid = brcmf_sdcard_query_device(card);
/* try to attach to the target device */
sdiodev->bus = drvinfo.attach((vendevid >> 16), (vendevid & 0xFFFF),
0, 0, 0, 0, regs, card);
if (!sdiodev->bus) {
BRCMF_ERROR(("%s: device attach failed\n", __func__));
goto err;
}
return 0;
/* error handling */
err:
if (sdiodev->card)
brcmf_sdcard_detach(sdiodev->card);
return -ENODEV;
}
EXPORT_SYMBOL(brcmf_sdio_probe);
int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
{
drvinfo.detach(sdiodev->bus);
brcmf_sdcard_detach(sdiodev->card);
return 0;
}
EXPORT_SYMBOL(brcmf_sdio_remove);
int brcmf_sdio_register(struct brcmf_sdioh_driver *driver)
{
drvinfo = *driver;
return brcmf_sdio_function_init();
}
void brcmf_sdio_unregister(void)
{
brcmf_sdio_function_cleanup();
}
void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
{
if (enable)
brcmf_sdbrcm_wd_timer(sdiodev->bus, brcmf_watchdog_ms);
else
brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);
}
|