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
|
/******************************************************************************
*
* Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
*
* 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:
* James P. Ketrenos <ipw2100-admin@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#ifndef __iwl3945_io_h__
#define __iwl3945_io_h__
#include <linux/io.h>
#include "iwl-3945-debug.h"
/*
* 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
* and the current line number is printed in addition to any other debug output.
*
* The non-prefixed name is the #define that maps the caller into a
* #define that provides the caller's __LINE__ to the double prefix version.
*
* 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
* routines, for example _iwl3945_read_direct32 calls the non-check version of
* _iwl3945_read32.)
*
* These declarations are *extremely* useful in quickly isolating code deltas
* which result in misconfiguration of the hardware I/O. In combination with
* git-bisect and the IO debug level you can quickly determine the specific
* commit which breaks the IO sequence to the hardware.
*
*/
#define _iwl3945_write32(priv, ofs, val) iowrite32((val), (priv)->hw_base + (ofs))
#ifdef CONFIG_IWL3945_DEBUG
static inline void __iwl3945_write32(const char *f, u32 l, struct iwl3945_priv *priv,
u32 ofs, u32 val)
{
IWL_DEBUG_IO("write32(0x%08X, 0x%08X) - %s %d\n", ofs, val, f, l);
_iwl3945_write32(priv, ofs, val);
}
#define iwl3945_write32(priv, ofs, val) \
__iwl3945_write32(__FILE__, __LINE__, priv, ofs, val)
#else
#define iwl3945_write32(priv, ofs, val) _iwl3945_write32(priv, ofs, val)
#endif
#define _iwl3945_read32(priv, ofs) ioread32((priv)->hw_base + (ofs))
#ifdef CONFIG_IWL3945_DEBUG
static inline u32 __iwl3945_read32(char *f, u32 l, struct iwl3945_priv *priv, u32 ofs)
{
IWL_DEBUG_IO("read_direct32(0x%08X) - %s %d\n", ofs, f, l);
return _iwl3945_read32(priv, ofs);
}
#define iwl3945_read32(priv, ofs)__iwl3945_read32(__FILE__, __LINE__, priv, ofs)
#else
#define iwl3945_read32(p, o) _iwl3945_read32(p, o)
#endif
static inline int _iwl3945_poll_bit(struct iwl3945_priv *priv, u32 addr,
u32 bits, u32 mask, int timeout)
{
int i = 0;
do {
if ((_iwl3945_read32(priv, addr) & mask) == (bits & mask))
return i;
udelay(10);
i += 10;
} while (i < timeout);
return -ETIMEDOUT;
}
#ifdef CONFIG_IWL3945_DEBUG
static inline int __iwl3945_poll_bit(const char *f, u32 l,
struct iwl3945_priv *priv, u32 addr,
u32 bits, u32 mask, int timeout)
{
int ret = _iwl3945_poll_bit(priv, addr, bits, mask, timeout);
IWL_DEBUG_IO("poll_bit(0x%08X, 0x%08X, 0x%08X) - %s- %s %d\n",
addr, bits, mask,
unlikely(ret == -ETIMEDOUT) ? "timeout" : "", f, l);
return ret;
}
#define iwl3945_poll_bit(priv, addr, bits, mask, timeout) \
__iwl3945_poll_bit(__FILE__, __LINE__, priv, addr, bits, mask, timeout)
#else
#define iwl3945_poll_bit(p, a, b, m, t) _iwl3945_poll_bit(p, a, b, m, t)
#endif
static inline void _iwl3945_set_bit(struct iwl3945_priv *priv, u32 reg, u32 mask)
{
_iwl3945_write32(priv, reg, _iwl3945_read32(priv, reg) | mask);
}
#ifdef CONFIG_IWL3945_DEBUG
static inline void __iwl3945_set_bit(const char *f, u32 l,
struct iwl3945_priv *priv, u32 reg, u32 mask)
{
u32 val = _iwl3945_read32(priv, reg) | mask;
IWL_DEBUG_IO("set_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val);
_iwl3945_write32(priv, reg, val);
}
#define iwl3945_set_bit(p, r, m) __iwl3945_set_bit(__FILE__, __LINE__, p, r, m)
#else
#define iwl3945_set_bit(p, r, m) _iwl3945_set_bit(p, r, m)
#endif
static inline void _iwl3945_clear_bit(struct iwl3945_priv *priv, u32 reg, u32 mask)
{
_iwl3945_write32(priv, reg, _iwl3945_read32(priv, reg) & ~mask);
}
#ifdef CONFIG_IWL3945_DEBUG
static inline void __iwl3945_clear_bit(const char *f, u32 l,
struct iwl3945_priv *priv, u32 reg, u32 mask)
{
u32 val = _iwl3945_read32(priv, reg) & ~mask;
IWL_DEBUG_IO("clear_bit(0x%08X, 0x%08X) = 0x%08X\n", reg, mask, val);
_iwl3945_write32(priv, reg, val);
}
#define iwl3945_clear_bit(p, r, m) __iwl3945_clear_bit(__FILE__, __LINE__, p, r, m)
#else
#define iwl3945_clear_bit(p, r, m) _iwl3945_clear_bit(p, r, m)
#endif
static inline int _iwl3945_grab_nic_access(struct iwl3945_priv *priv)
{
int ret;
#ifdef CONFIG_IWL3945_DEBUG
if (atomic_read(&priv->restrict_refcnt))
return 0;
#endif
/* this bit wakes up the NIC */
_iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
ret = _iwl3945_poll_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
(CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 50);
if (ret < 0) {
IWL_ERROR("MAC is in deep sleep!\n");
return -EIO;
}
#ifdef CONFIG_IWL3945_DEBUG
atomic_inc(&priv->restrict_refcnt);
#endif
return 0;
}
#ifdef CONFIG_IWL3945_DEBUG
static inline int __iwl3945_grab_nic_access(const char *f, u32 l,
struct iwl3945_priv *priv)
{
if (atomic_read(&priv->restrict_refcnt))
IWL_DEBUG_INFO("Grabbing access while already held at "
"line %d.\n", l);
IWL_DEBUG_IO("grabbing nic access - %s %d\n", f, l);
return _iwl3945_grab_nic_access(priv);
}
#define iwl3945_grab_nic_access(priv) \
__iwl3945_grab_nic_access(__FILE__, __LINE__, priv)
#else
#define iwl3945_grab_nic_access(priv) \
_iwl3945_grab_nic_access(priv)
#endif
static inline void _iwl3945_release_nic_access(struct iwl3945_priv *priv)
{
#ifdef CONFIG_IWL3945_DEBUG
if (atomic_dec_and_test(&priv->restrict_refcnt))
#endif
_iwl3945_clear_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
}
#ifdef CONFIG_IWL3945_DEBUG
static inline void __iwl3945_release_nic_access(const char *f, u32 l,
struct iwl3945_priv *priv)
{
if (atomic_read(&priv->restrict_refcnt) <= 0)
IWL_ERROR("Release unheld nic access at line %d.\n", l);
IWL_DEBUG_IO("releasing nic access - %s %d\n", f, l);
_iwl3945_release_nic_access(priv);
}
#define iwl3945_release_nic_access(priv) \
__iwl3945_release_nic_access(__FILE__, __LINE__, priv)
#else
#define iwl3945_release_nic_access(priv) \
_iwl3945_release_nic_access(priv)
#endif
static inline u32 _iwl3945_read_direct32(struct iwl3945_priv *priv, u32 reg)
{
return _iwl3945_read32(priv, reg);
}
#ifdef CONFIG_IWL3945_DEBUG
static inline u32 __iwl3945_read_direct32(const char *f, u32 l,
struct iwl3945_priv *priv, u32 reg)
{
u32 value = _iwl3945_read_direct32(priv, reg);
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Nic access not held from %s %d\n", f, l);
IWL_DEBUG_IO("read_direct32(0x%4X) = 0x%08x - %s %d \n", reg, value,
f, l);
return value;
}
#define iwl3945_read_direct32(priv, reg) \
__iwl3945_read_direct32(__FILE__, __LINE__, priv, reg)
#else
#define iwl3945_read_direct32 _iwl3945_read_direct32
#endif
static inline void _iwl3945_write_direct32(struct iwl3945_priv *priv,
u32 reg, u32 value)
{
_iwl3945_write32(priv, reg, value);
}
#ifdef CONFIG_IWL3945_DEBUG
static void __iwl3945_write_direct32(u32 line,
struct iwl3945_priv *priv, u32 reg, u32 value)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Nic access not held from line %d\n", line);
_iwl3945_write_direct32(priv, reg, value);
}
#define iwl3945_write_direct32(priv, reg, value) \
__iwl3945_write_direct32(__LINE__, priv, reg, value)
#else
#define iwl3945_write_direct32 _iwl3945_write_direct32
#endif
static inline void iwl3945_write_reg_buf(struct iwl3945_priv *priv,
u32 reg, u32 len, u32 *values)
{
u32 count = sizeof(u32);
if ((priv != NULL) && (values != NULL)) {
for (; 0 < len; len -= count, reg += count, values++)
_iwl3945_write_direct32(priv, reg, *values);
}
}
static inline int _iwl3945_poll_direct_bit(struct iwl3945_priv *priv,
u32 addr, u32 mask, int timeout)
{
return _iwl3945_poll_bit(priv, addr, mask, mask, timeout);
}
#ifdef CONFIG_IWL3945_DEBUG
static inline int __iwl3945_poll_direct_bit(const char *f, u32 l,
struct iwl3945_priv *priv,
u32 addr, u32 mask, int timeout)
{
int ret = _iwl3945_poll_direct_bit(priv, addr, mask, timeout);
if (unlikely(ret == -ETIMEDOUT))
IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) - "
"timedout - %s %d\n", addr, mask, f, l);
else
IWL_DEBUG_IO("poll_direct_bit(0x%08X, 0x%08X) = 0x%08X "
"- %s %d\n", addr, mask, ret, f, l);
return ret;
}
#define iwl3945_poll_direct_bit(priv, addr, mask, timeout) \
__iwl3945_poll_direct_bit(__FILE__, __LINE__, priv, addr, mask, timeout)
#else
#define iwl3945_poll_direct_bit _iwl3945_poll_direct_bit
#endif
static inline u32 _iwl3945_read_prph(struct iwl3945_priv *priv, u32 reg)
{
_iwl3945_write_direct32(priv, HBUS_TARG_PRPH_RADDR, reg | (3 << 24));
return _iwl3945_read_direct32(priv, HBUS_TARG_PRPH_RDAT);
}
#ifdef CONFIG_IWL3945_DEBUG
static inline u32 __iwl3945_read_prph(u32 line, struct iwl3945_priv *priv, u32 reg)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Nic access not held from line %d\n", line);
return _iwl3945_read_prph(priv, reg);
}
#define iwl3945_read_prph(priv, reg) \
__iwl3945_read_prph(__LINE__, priv, reg)
#else
#define iwl3945_read_prph _iwl3945_read_prph
#endif
static inline void _iwl3945_write_prph(struct iwl3945_priv *priv,
u32 addr, u32 val)
{
_iwl3945_write_direct32(priv, HBUS_TARG_PRPH_WADDR,
((addr & 0x0000FFFF) | (3 << 24)));
_iwl3945_write_direct32(priv, HBUS_TARG_PRPH_WDAT, val);
}
#ifdef CONFIG_IWL3945_DEBUG
static inline void __iwl3945_write_prph(u32 line, struct iwl3945_priv *priv,
u32 addr, u32 val)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Nic access from line %d\n", line);
_iwl3945_write_prph(priv, addr, val);
}
#define iwl3945_write_prph(priv, addr, val) \
__iwl3945_write_prph(__LINE__, priv, addr, val);
#else
#define iwl3945_write_prph _iwl3945_write_prph
#endif
#define _iwl3945_set_bits_prph(priv, reg, mask) \
_iwl3945_write_prph(priv, reg, (_iwl3945_read_prph(priv, reg) | mask))
#ifdef CONFIG_IWL3945_DEBUG
static inline void __iwl3945_set_bits_prph(u32 line, struct iwl3945_priv *priv,
u32 reg, u32 mask)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Nic access not held from line %d\n", line);
_iwl3945_set_bits_prph(priv, reg, mask);
}
#define iwl3945_set_bits_prph(priv, reg, mask) \
__iwl3945_set_bits_prph(__LINE__, priv, reg, mask)
#else
#define iwl3945_set_bits_prph _iwl3945_set_bits_prph
#endif
#define _iwl3945_set_bits_mask_prph(priv, reg, bits, mask) \
_iwl3945_write_prph(priv, reg, ((_iwl3945_read_prph(priv, reg) & mask) | bits))
#ifdef CONFIG_IWL3945_DEBUG
static inline void __iwl3945_set_bits_mask_prph(u32 line,
struct iwl3945_priv *priv, u32 reg, u32 bits, u32 mask)
{
if (!atomic_read(&priv->restrict_refcnt))
IWL_ERROR("Nic access not held from line %d\n", line);
_iwl3945_set_bits_mask_prph(priv, reg, bits, mask);
}
#define iwl3945_set_bits_mask_prph(priv, reg, bits, mask) \
__iwl3945_set_bits_mask_prph(__LINE__, priv, reg, bits, mask)
#else
#define iwl3945_set_bits_mask_prph _iwl3945_set_bits_mask_prph
#endif
static inline void iwl3945_clear_bits_prph(struct iwl3945_priv
*priv, u32 reg, u32 mask)
{
u32 val = _iwl3945_read_prph(priv, reg);
_iwl3945_write_prph(priv, reg, (val & ~mask));
}
static inline u32 iwl3945_read_targ_mem(struct iwl3945_priv *priv, u32 addr)
{
iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, addr);
return iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
}
static inline void iwl3945_write_targ_mem(struct iwl3945_priv *priv, u32 addr, u32 val)
{
iwl3945_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
iwl3945_write_direct32(priv, HBUS_TARG_MEM_WDAT, val);
}
static inline void iwl3945_write_targ_mem_buf(struct iwl3945_priv *priv, u32 addr,
u32 len, u32 *values)
{
iwl3945_write_direct32(priv, HBUS_TARG_MEM_WADDR, addr);
for (; 0 < len; len -= sizeof(u32), values++)
iwl3945_write_direct32(priv, HBUS_TARG_MEM_WDAT, *values);
}
#endif
|
