iwl-io.h 15.4 KB
Newer Older
1
2
/******************************************************************************
 *
3
 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 *
 * Portions of this file are derived from the ipw3945 project.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
24
 *  Intel Linux Wireless <ilw@linux.intel.com>
25
26
27
28
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/

29
30
#ifndef __iwl_io_h__
#define __iwl_io_h__
31
32
33

#include <linux/io.h>

34
#include "iwl-dev.h"
35
#include "iwl-debug.h"
Johannes Berg's avatar
Johannes Berg committed
36
#include "iwl-devtrace.h"
37
38
39
40
41
42
43
44
45
46

/*
 * IO, register, and NIC memory access functions
 *
 * NOTE on naming convention and macro usage for these
 *
 * A single _ prefix before a an access function means that no state
 * check or debug information is printed when that function is called.
 *
 * A double __ prefix before an access function means that state is checked
47
48
 * and the current line number and caller function name are printed in addition
 * to any other debug output.
49
50
 *
 * The non-prefixed name is the #define that maps the caller into a
51
52
 * #define that provides the caller's name and __LINE__ to the double
 * prefix version.
53
54
55
 *
 * If you wish to call the function without any debug or state checking,
 * you should use the single _ prefix version (as is used by dependent IO
56
57
 * routines, for example _iwl_read_direct32 calls the non-check version of
 * _iwl_read32.)
58
59
 *
 * These declarations are *extremely* useful in quickly isolating code deltas
60
 * which result in misconfiguration of the hardware I/O.  In combination with
61
62
63
64
65
 * git-bisect and the IO debug level you can quickly determine the specific
 * commit which breaks the IO sequence to the hardware.
 *
 */

Ben Cahill's avatar
Ben Cahill committed
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
static inline void _iwl_write8(struct iwl_priv *priv, u32 ofs, u8 val)
{
	trace_iwlwifi_dev_iowrite8(priv, ofs, val);
	iowrite8(val, priv->hw_base + ofs);
}

#ifdef CONFIG_IWLWIFI_DEBUG
static inline void __iwl_write8(const char *f, u32 l, struct iwl_priv *priv,
				 u32 ofs, u8 val)
{
	IWL_DEBUG_IO(priv, "write8(0x%08X, 0x%02X) - %s %d\n", ofs, val, f, l);
	_iwl_write8(priv, ofs, val);
}
#define iwl_write8(priv, ofs, val) \
	__iwl_write8(__FILE__, __LINE__, priv, ofs, val)
#else
#define iwl_write8(priv, ofs, val) _iwl_write8(priv, ofs, val)
#endif


Johannes Berg's avatar
Johannes Berg committed
86
87
88
89
90
91
static inline void _iwl_write32(struct iwl_priv *priv, u32 ofs, u32 val)
{
	trace_iwlwifi_dev_iowrite32(priv, ofs, val);
	iowrite32(val, priv->hw_base + ofs);
}

92
#ifdef CONFIG_IWLWIFI_DEBUG
93
static inline void __iwl_write32(const char *f, u32 l, struct iwl_priv *priv,
94
95
				 u32 ofs, u32 val)
{
96
	IWL_DEBUG_IO(priv, "write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l);
97
	_iwl_write32(priv, ofs, val);
98
}
99
100
#define iwl_write32(priv, ofs, val) \
	__iwl_write32(__FILE__, __LINE__, priv, ofs, val)
101
#else
102
#define iwl_write32(priv, ofs, val) _iwl_write32(priv, ofs, val)
103
104
#endif

Johannes Berg's avatar
Johannes Berg committed
105
106
107
108
109
110
111
static inline u32 _iwl_read32(struct iwl_priv *priv, u32 ofs)
{
	u32 val = ioread32(priv->hw_base + ofs);
	trace_iwlwifi_dev_ioread32(priv, ofs, val);
	return val;
}

112
#ifdef CONFIG_IWLWIFI_DEBUG
113
static inline u32 __iwl_read32(char *f, u32 l, struct iwl_priv *priv, u32 ofs)
114
{
115
	IWL_DEBUG_IO(priv, "read_direct32(0x%08X) - %s %d\n", ofs, f, l);
116
	return _iwl_read32(priv, ofs);
117
}
118
#define iwl_read32(priv, ofs) __iwl_read32(__FILE__, __LINE__, priv, ofs)
119
#else
120
#define iwl_read32(p, o) _iwl_read32(p, o)
121
122
#endif

123
#define IWL_POLL_INTERVAL 10	/* microseconds */
124
static inline int _iwl_poll_bit(struct iwl_priv *priv, u32 addr,
125
126
				u32 bits, u32 mask, int timeout)
{
127
	int t = 0;
128
129

	do {
130
		if ((_iwl_read32(priv, addr) & mask) == (bits & mask))
131
132
133
134
			return t;
		udelay(IWL_POLL_INTERVAL);
		t += IWL_POLL_INTERVAL;
	} while (t < timeout);
135
136
137

	return -ETIMEDOUT;
}
138
#ifdef CONFIG_IWLWIFI_DEBUG
139
static inline int __iwl_poll_bit(const char *f, u32 l,
140
				 struct iwl_priv *priv, u32 addr,
141
142
				 u32 bits, u32 mask, int timeout)
{
143
	int ret = _iwl_poll_bit(priv, addr, bits, mask, timeout);
144
	IWL_DEBUG_IO(priv, "poll_bit(0x%08X, 0x%08X, 0x%08X) - %s- %s %d\n",
145
		     addr, bits, mask,
146
		     unlikely(ret  == -ETIMEDOUT) ? "timeout" : "", f, l);
147
	return ret;
148
}
149
150
#define iwl_poll_bit(priv, addr, bits, mask, timeout) \
	__iwl_poll_bit(__FILE__, __LINE__, priv, addr, bits, mask, timeout)
151
#else
152
#define iwl_poll_bit(p, a, b, m, t) _iwl_poll_bit(p, a, b, m, t)
153
154
#endif

155
static inline void _iwl_set_bit(struct iwl_priv *priv, u32 reg, u32 mask)
156
{
157
	_iwl_write32(priv, reg, _iwl_read32(priv, reg) | mask);
158
}
159
#ifdef CONFIG_IWLWIFI_DEBUG
160
static inline void __iwl_set_bit(const char *f, u32 l,
161
				 struct iwl_priv *priv, u32 reg, u32 mask)
162
{
163
	u32 val = _iwl_read32(priv, reg) | mask;
164
	IWL_DEBUG_IO(priv, "set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val);
165
	_iwl_write32(priv, reg, val);
166
}
Mohamed Abbas's avatar
Mohamed Abbas committed
167
168
169
170
171
172
173
174
static inline void iwl_set_bit(struct iwl_priv *p, u32 r, u32 m)
{
	unsigned long reg_flags;

	spin_lock_irqsave(&p->reg_lock, reg_flags);
	__iwl_set_bit(__FILE__, __LINE__, p, r, m);
	spin_unlock_irqrestore(&p->reg_lock, reg_flags);
}
175
#else
Mohamed Abbas's avatar
Mohamed Abbas committed
176
177
178
179
180
181
182
183
static inline void iwl_set_bit(struct iwl_priv *p, u32 r, u32 m)
{
	unsigned long reg_flags;

	spin_lock_irqsave(&p->reg_lock, reg_flags);
	_iwl_set_bit(p, r, m);
	spin_unlock_irqrestore(&p->reg_lock, reg_flags);
}
184
185
#endif

186
static inline void _iwl_clear_bit(struct iwl_priv *priv, u32 reg, u32 mask)
187
{
188
	_iwl_write32(priv, reg, _iwl_read32(priv, reg) & ~mask);
189
}
190
#ifdef CONFIG_IWLWIFI_DEBUG
191
static inline void __iwl_clear_bit(const char *f, u32 l,
192
				   struct iwl_priv *priv, u32 reg, u32 mask)
193
{
194
	u32 val = _iwl_read32(priv, reg) & ~mask;
195
	IWL_DEBUG_IO(priv, "clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val);
196
	_iwl_write32(priv, reg, val);
197
}
Mohamed Abbas's avatar
Mohamed Abbas committed
198
199
200
201
202
203
204
205
static inline void iwl_clear_bit(struct iwl_priv *p, u32 r, u32 m)
{
	unsigned long reg_flags;

	spin_lock_irqsave(&p->reg_lock, reg_flags);
	__iwl_clear_bit(__FILE__, __LINE__, p, r, m);
	spin_unlock_irqrestore(&p->reg_lock, reg_flags);
}
206
#else
Mohamed Abbas's avatar
Mohamed Abbas committed
207
208
209
210
211
212
213
214
static inline void iwl_clear_bit(struct iwl_priv *p, u32 r, u32 m)
{
	unsigned long reg_flags;

	spin_lock_irqsave(&p->reg_lock, reg_flags);
	_iwl_clear_bit(p, r, m);
	spin_unlock_irqrestore(&p->reg_lock, reg_flags);
}
215
216
#endif

217
static inline int _iwl_grab_nic_access(struct iwl_priv *priv)
218
{
219
	int ret;
220
	u32 val;
Mohamed Abbas's avatar
Mohamed Abbas committed
221

222
	/* this bit wakes up the NIC */
223
	_iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243

	/*
	 * These bits say the device is running, and should keep running for
	 * at least a short while (at least as long as MAC_ACCESS_REQ stays 1),
	 * but they do not indicate that embedded SRAM is restored yet;
	 * 3945 and 4965 have volatile SRAM, and must save/restore contents
	 * to/from host DRAM when sleeping/waking for power-saving.
	 * Each direction takes approximately 1/4 millisecond; with this
	 * overhead, it's a good idea to grab and hold MAC_ACCESS_REQUEST if a
	 * series of register accesses are expected (e.g. reading Event Log),
	 * to keep device from sleeping.
	 *
	 * CSR_UCODE_DRV_GP1 register bit MAC_SLEEP == 0 indicates that
	 * SRAM is okay/restored.  We don't check that here because this call
	 * is just for hardware register access; but GP1 MAC_SLEEP check is a
	 * good idea before accessing 3945/4965 SRAM (e.g. reading Event Log).
	 *
	 * 5000 series and later (including 1000 series) have non-volatile SRAM,
	 * and do not save/restore SRAM when power cycling.
	 */
244
	ret = _iwl_poll_bit(priv, CSR_GP_CNTRL,
245
246
			   CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
			   (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
247
			    CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000);
248
	if (ret < 0) {
249
250
		val = _iwl_read32(priv, CSR_GP_CNTRL);
		IWL_ERR(priv, "MAC is in deep sleep!.  CSR_GP_CNTRL = 0x%08X\n", val);
Mohamed Abbas's avatar
Mohamed Abbas committed
251
		_iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI);
252
253
254
255
256
257
		return -EIO;
	}

	return 0;
}

258
#ifdef CONFIG_IWLWIFI_DEBUG
259
static inline int __iwl_grab_nic_access(const char *f, u32 l,
260
					       struct iwl_priv *priv)
261
{
262
	IWL_DEBUG_IO(priv, "grabbing nic access - %s %d\n", f, l);
263
	return _iwl_grab_nic_access(priv);
264
}
265
266
#define iwl_grab_nic_access(priv) \
	__iwl_grab_nic_access(__FILE__, __LINE__, priv)
267
#else
268
269
#define iwl_grab_nic_access(priv) \
	_iwl_grab_nic_access(priv)
270
271
#endif

272
static inline void _iwl_release_nic_access(struct iwl_priv *priv)
273
{
Mohamed Abbas's avatar
Mohamed Abbas committed
274
275
	_iwl_clear_bit(priv, CSR_GP_CNTRL,
			CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
276
}
277
#ifdef CONFIG_IWLWIFI_DEBUG
278
static inline void __iwl_release_nic_access(const char *f, u32 l,
279
					    struct iwl_priv *priv)
280
281
{

282
	IWL_DEBUG_IO(priv, "releasing nic access - %s %d\n", f, l);
283
	_iwl_release_nic_access(priv);
284
}
285
286
#define iwl_release_nic_access(priv) \
	__iwl_release_nic_access(__FILE__, __LINE__, priv)
287
#else
288
289
#define iwl_release_nic_access(priv) \
	_iwl_release_nic_access(priv)
290
291
#endif

292
static inline u32 _iwl_read_direct32(struct iwl_priv *priv, u32 reg)
293
{
294
	return _iwl_read32(priv, reg);
295
}
296
#ifdef CONFIG_IWLWIFI_DEBUG
297
static inline u32 __iwl_read_direct32(const char *f, u32 l,
298
					struct iwl_priv *priv, u32 reg)
299
{
300
	u32 value = _iwl_read_direct32(priv, reg);
301
	IWL_DEBUG_IO(priv, "read_direct32(0x%4X) = 0x%08x - %s %d \n", reg, value,
302
303
304
		     f, l);
	return value;
}
Mohamed Abbas's avatar
Mohamed Abbas committed
305
306
307
308
309
310
311
312
313
314
315
316
317
static inline u32 iwl_read_direct32(struct iwl_priv *priv, u32 reg)
{
	u32 value;
	unsigned long reg_flags;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);
	value = __iwl_read_direct32(__FILE__, __LINE__, priv, reg);
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
	return value;
}

318
#else
Mohamed Abbas's avatar
Mohamed Abbas committed
319
320
321
322
323
324
325
326
327
328
329
330
331
static inline u32 iwl_read_direct32(struct iwl_priv *priv, u32 reg)
{
	u32 value;
	unsigned long reg_flags;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);
	value = _iwl_read_direct32(priv, reg);
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
	return value;

}
332
333
#endif

334
static inline void _iwl_write_direct32(struct iwl_priv *priv,
335
336
					 u32 reg, u32 value)
{
337
	_iwl_write32(priv, reg, value);
338
}
Mohamed Abbas's avatar
Mohamed Abbas committed
339
static inline void iwl_write_direct32(struct iwl_priv *priv, u32 reg, u32 value)
340
{
Mohamed Abbas's avatar
Mohamed Abbas committed
341
342
343
344
345
346
347
348
	unsigned long reg_flags;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	if (!iwl_grab_nic_access(priv)) {
		_iwl_write_direct32(priv, reg, value);
		iwl_release_nic_access(priv);
	}
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
349
350
}

351
static inline void iwl_write_reg_buf(struct iwl_priv *priv,
352
353
354
355
356
357
					       u32 reg, u32 len, u32 *values)
{
	u32 count = sizeof(u32);

	if ((priv != NULL) && (values != NULL)) {
		for (; 0 < len; len -= count, reg += count, values++)
Mohamed Abbas's avatar
Mohamed Abbas committed
358
			iwl_write_direct32(priv, reg, *values);
359
360
361
	}
}

362
363
static inline int _iwl_poll_direct_bit(struct iwl_priv *priv, u32 addr,
				       u32 mask, int timeout)
364
{
Mohamed Abbas's avatar
Mohamed Abbas committed
365
366
367
368
369
370
371
372
373
374
	int t = 0;

	do {
		if ((iwl_read_direct32(priv, addr) & mask) == mask)
			return t;
		udelay(IWL_POLL_INTERVAL);
		t += IWL_POLL_INTERVAL;
	} while (t < timeout);

	return -ETIMEDOUT;
375
376
}

377
#ifdef CONFIG_IWLWIFI_DEBUG
378
static inline int __iwl_poll_direct_bit(const char *f, u32 l,
379
					    struct iwl_priv *priv,
380
381
					    u32 addr, u32 mask, int timeout)
{
382
	int ret  = _iwl_poll_direct_bit(priv, addr, mask, timeout);
383

384
	if (unlikely(ret == -ETIMEDOUT))
385
		IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) - "
386
387
			     "timedout - %s %d\n", addr, mask, f, l);
	else
388
		IWL_DEBUG_IO(priv, "poll_direct_bit(0x%08X, 0x%08X) = 0x%08X "
389
390
			     "- %s %d\n", addr, mask, ret, f, l);
	return ret;
391
}
392
393
#define iwl_poll_direct_bit(priv, addr, mask, timeout) \
	__iwl_poll_direct_bit(__FILE__, __LINE__, priv, addr, mask, timeout)
394
#else
395
#define iwl_poll_direct_bit _iwl_poll_direct_bit
396
397
#endif

398
static inline u32 _iwl_read_prph(struct iwl_priv *priv, u32 reg)
399
{
400
	_iwl_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
401
	rmb();
402
	return _iwl_read_direct32(priv, HBUS_TARG_PRPH_RDAT);
403
}
Mohamed Abbas's avatar
Mohamed Abbas committed
404
static inline u32 iwl_read_prph(struct iwl_priv *priv, u32 reg)
405
{
Mohamed Abbas's avatar
Mohamed Abbas committed
406
407
	unsigned long reg_flags;
	u32 val;
408

Mohamed Abbas's avatar
Mohamed Abbas committed
409
410
411
412
413
414
415
	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);
	val = _iwl_read_prph(priv, reg);
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
	return val;
}
416

417
static inline void _iwl_write_prph(struct iwl_priv *priv,
418
419
					     u32 addr, u32 val)
{
420
	_iwl_write_direct32(priv, HBUS_TARG_PRPH_WADDR,
421
			      ((addr & 0x0000FFFF) | (3 << 24)));
422
	wmb();
423
	_iwl_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val);
424
}
Mohamed Abbas's avatar
Mohamed Abbas committed
425
426

static inline void iwl_write_prph(struct iwl_priv *priv, u32 addr, u32 val)
427
{
Mohamed Abbas's avatar
Mohamed Abbas committed
428
	unsigned long reg_flags;
429

Mohamed Abbas's avatar
Mohamed Abbas committed
430
431
432
433
434
435
436
	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	if (!iwl_grab_nic_access(priv)) {
		_iwl_write_prph(priv, addr, val);
		iwl_release_nic_access(priv);
	}
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
}
437

438
439
#define _iwl_set_bits_prph(priv, reg, mask) \
	_iwl_write_prph(priv, reg, (_iwl_read_prph(priv, reg) | mask))
Mohamed Abbas's avatar
Mohamed Abbas committed
440
441

static inline void iwl_set_bits_prph(struct iwl_priv *priv, u32 reg, u32 mask)
442
{
Mohamed Abbas's avatar
Mohamed Abbas committed
443
	unsigned long reg_flags;
444

Mohamed Abbas's avatar
Mohamed Abbas committed
445
446
	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);
447
	_iwl_set_bits_prph(priv, reg, mask);
Mohamed Abbas's avatar
Mohamed Abbas committed
448
449
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
450
451
}

452
453
#define _iwl_set_bits_mask_prph(priv, reg, bits, mask) \
	_iwl_write_prph(priv, reg, ((_iwl_read_prph(priv, reg) & mask) | bits))
454

Mohamed Abbas's avatar
Mohamed Abbas committed
455
456
static inline void iwl_set_bits_mask_prph(struct iwl_priv *priv, u32 reg,
				u32 bits, u32 mask)
457
{
Mohamed Abbas's avatar
Mohamed Abbas committed
458
459
460
461
	unsigned long reg_flags;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);
462
	_iwl_set_bits_mask_prph(priv, reg, bits, mask);
Mohamed Abbas's avatar
Mohamed Abbas committed
463
464
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
465
466
}

467
static inline void iwl_clear_bits_prph(struct iwl_priv
468
469
						 *priv, u32 reg, u32 mask)
{
Mohamed Abbas's avatar
Mohamed Abbas committed
470
471
472
473
474
475
	unsigned long reg_flags;
	u32 val;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);
	val = _iwl_read_prph(priv, reg);
476
	_iwl_write_prph(priv, reg, (val & ~mask));
Mohamed Abbas's avatar
Mohamed Abbas committed
477
478
	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
479
480
}

481
static inline u32 iwl_read_targ_mem(struct iwl_priv *priv, u32 addr)
482
{
Mohamed Abbas's avatar
Mohamed Abbas committed
483
484
485
486
487
488
489
	unsigned long reg_flags;
	u32 value;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	iwl_grab_nic_access(priv);

	_iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr);
490
	rmb();
Mohamed Abbas's avatar
Mohamed Abbas committed
491
492
493
494
495
	value = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);

	iwl_release_nic_access(priv);
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
	return value;
496
497
}

498
static inline void iwl_write_targ_mem(struct iwl_priv *priv, u32 addr, u32 val)
499
{
Mohamed Abbas's avatar
Mohamed Abbas committed
500
501
502
503
504
505
506
507
508
509
	unsigned long reg_flags;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	if (!iwl_grab_nic_access(priv)) {
		_iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
		wmb();
		_iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, val);
		iwl_release_nic_access(priv);
	}
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
510
511
}

512
static inline void iwl_write_targ_mem_buf(struct iwl_priv *priv, u32 addr,
513
					  u32 len, u32 *values)
514
{
Mohamed Abbas's avatar
Mohamed Abbas committed
515
516
517
518
519
520
521
522
523
524
525
526
	unsigned long reg_flags;

	spin_lock_irqsave(&priv->reg_lock, reg_flags);
	if (!iwl_grab_nic_access(priv)) {
		_iwl_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
		wmb();
		for (; 0 < len; len -= sizeof(u32), values++)
			_iwl_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values);

		iwl_release_nic_access(priv);
	}
	spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
527
528
}
#endif