simple_open: automatically convert to simple_open()
[linux-2.6.git] / drivers / net / wireless / ath / ath5k / debug.c
1 /*
2  * Copyright (c) 2007-2008 Bruno Randolf <bruno@thinktube.com>
3  *
4  *  This file is free software: you may copy, redistribute and/or modify it
5  *  under the terms of the GNU General Public License as published by the
6  *  Free Software Foundation, either version 2 of the License, or (at your
7  *  option) any later version.
8  *
9  *  This file is distributed in the hope that it will be useful, but
10  *  WITHOUT ANY WARRANTY; without even the implied warranty of
11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  *  General Public License for more details.
13  *
14  *  You should have received a copy of the GNU General Public License
15  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
16  *
17  *
18  * This file incorporates work covered by the following copyright and
19  * permission notice:
20  *
21  * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
22  * Copyright (c) 2004-2005 Atheros Communications, Inc.
23  * Copyright (c) 2006 Devicescape Software, Inc.
24  * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
25  * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
26  *
27  * All rights reserved.
28  *
29  * Redistribution and use in source and binary forms, with or without
30  * modification, are permitted provided that the following conditions
31  * are met:
32  * 1. Redistributions of source code must retain the above copyright
33  *    notice, this list of conditions and the following disclaimer,
34  *    without modification.
35  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
36  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
37  *    redistribution must be conditioned upon including a substantially
38  *    similar Disclaimer requirement for further binary redistribution.
39  * 3. Neither the names of the above-listed copyright holders nor the names
40  *    of any contributors may be used to endorse or promote products derived
41  *    from this software without specific prior written permission.
42  *
43  * Alternatively, this software may be distributed under the terms of the
44  * GNU General Public License ("GPL") version 2 as published by the Free
45  * Software Foundation.
46  *
47  * NO WARRANTY
48  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
49  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
50  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
51  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
52  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
53  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
54  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
55  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
56  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
57  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
58  * THE POSSIBILITY OF SUCH DAMAGES.
59  */
60 #include <linux/export.h>
61 #include <linux/moduleparam.h>
62
63 #include <linux/seq_file.h>
64 #include <linux/list.h>
65 #include "debug.h"
66 #include "ath5k.h"
67 #include "reg.h"
68 #include "base.h"
69
70 static unsigned int ath5k_debug;
71 module_param_named(debug, ath5k_debug, uint, 0);
72
73
74 /* debugfs: registers */
75
76 struct reg {
77         const char *name;
78         int addr;
79 };
80
81 #define REG_STRUCT_INIT(r) { #r, r }
82
83 /* just a few random registers, might want to add more */
84 static const struct reg regs[] = {
85         REG_STRUCT_INIT(AR5K_CR),
86         REG_STRUCT_INIT(AR5K_RXDP),
87         REG_STRUCT_INIT(AR5K_CFG),
88         REG_STRUCT_INIT(AR5K_IER),
89         REG_STRUCT_INIT(AR5K_BCR),
90         REG_STRUCT_INIT(AR5K_RTSD0),
91         REG_STRUCT_INIT(AR5K_RTSD1),
92         REG_STRUCT_INIT(AR5K_TXCFG),
93         REG_STRUCT_INIT(AR5K_RXCFG),
94         REG_STRUCT_INIT(AR5K_RXJLA),
95         REG_STRUCT_INIT(AR5K_MIBC),
96         REG_STRUCT_INIT(AR5K_TOPS),
97         REG_STRUCT_INIT(AR5K_RXNOFRM),
98         REG_STRUCT_INIT(AR5K_TXNOFRM),
99         REG_STRUCT_INIT(AR5K_RPGTO),
100         REG_STRUCT_INIT(AR5K_RFCNT),
101         REG_STRUCT_INIT(AR5K_MISC),
102         REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT),
103         REG_STRUCT_INIT(AR5K_ISR),
104         REG_STRUCT_INIT(AR5K_PISR),
105         REG_STRUCT_INIT(AR5K_SISR0),
106         REG_STRUCT_INIT(AR5K_SISR1),
107         REG_STRUCT_INIT(AR5K_SISR2),
108         REG_STRUCT_INIT(AR5K_SISR3),
109         REG_STRUCT_INIT(AR5K_SISR4),
110         REG_STRUCT_INIT(AR5K_IMR),
111         REG_STRUCT_INIT(AR5K_PIMR),
112         REG_STRUCT_INIT(AR5K_SIMR0),
113         REG_STRUCT_INIT(AR5K_SIMR1),
114         REG_STRUCT_INIT(AR5K_SIMR2),
115         REG_STRUCT_INIT(AR5K_SIMR3),
116         REG_STRUCT_INIT(AR5K_SIMR4),
117         REG_STRUCT_INIT(AR5K_DCM_ADDR),
118         REG_STRUCT_INIT(AR5K_DCCFG),
119         REG_STRUCT_INIT(AR5K_CCFG),
120         REG_STRUCT_INIT(AR5K_CPC0),
121         REG_STRUCT_INIT(AR5K_CPC1),
122         REG_STRUCT_INIT(AR5K_CPC2),
123         REG_STRUCT_INIT(AR5K_CPC3),
124         REG_STRUCT_INIT(AR5K_CPCOVF),
125         REG_STRUCT_INIT(AR5K_RESET_CTL),
126         REG_STRUCT_INIT(AR5K_SLEEP_CTL),
127         REG_STRUCT_INIT(AR5K_INTPEND),
128         REG_STRUCT_INIT(AR5K_SFR),
129         REG_STRUCT_INIT(AR5K_PCICFG),
130         REG_STRUCT_INIT(AR5K_GPIOCR),
131         REG_STRUCT_INIT(AR5K_GPIODO),
132         REG_STRUCT_INIT(AR5K_SREV),
133 };
134
135 static void *reg_start(struct seq_file *seq, loff_t *pos)
136 {
137         return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
138 }
139
140 static void reg_stop(struct seq_file *seq, void *p)
141 {
142         /* nothing to do */
143 }
144
145 static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
146 {
147         ++*pos;
148         return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
149 }
150
151 static int reg_show(struct seq_file *seq, void *p)
152 {
153         struct ath5k_hw *ah = seq->private;
154         struct reg *r = p;
155         seq_printf(seq, "%-25s0x%08x\n", r->name,
156                 ath5k_hw_reg_read(ah, r->addr));
157         return 0;
158 }
159
160 static const struct seq_operations register_seq_ops = {
161         .start = reg_start,
162         .next  = reg_next,
163         .stop  = reg_stop,
164         .show  = reg_show
165 };
166
167 static int open_file_registers(struct inode *inode, struct file *file)
168 {
169         struct seq_file *s;
170         int res;
171         res = seq_open(file, &register_seq_ops);
172         if (res == 0) {
173                 s = file->private_data;
174                 s->private = inode->i_private;
175         }
176         return res;
177 }
178
179 static const struct file_operations fops_registers = {
180         .open = open_file_registers,
181         .read    = seq_read,
182         .llseek  = seq_lseek,
183         .release = seq_release,
184         .owner = THIS_MODULE,
185 };
186
187
188 /* debugfs: beacons */
189
190 static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
191                                    size_t count, loff_t *ppos)
192 {
193         struct ath5k_hw *ah = file->private_data;
194         char buf[500];
195         unsigned int len = 0;
196         unsigned int v;
197         u64 tsf;
198
199         v = ath5k_hw_reg_read(ah, AR5K_BEACON);
200         len += snprintf(buf + len, sizeof(buf) - len,
201                 "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
202                 "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
203                 (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
204
205         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n",
206                 "AR5K_LAST_TSTP", ath5k_hw_reg_read(ah, AR5K_LAST_TSTP));
207
208         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n\n",
209                 "AR5K_BEACON_CNT", ath5k_hw_reg_read(ah, AR5K_BEACON_CNT));
210
211         v = ath5k_hw_reg_read(ah, AR5K_TIMER0);
212         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
213                 "AR5K_TIMER0 (TBTT)", v, v);
214
215         v = ath5k_hw_reg_read(ah, AR5K_TIMER1);
216         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
217                 "AR5K_TIMER1 (DMA)", v, v >> 3);
218
219         v = ath5k_hw_reg_read(ah, AR5K_TIMER2);
220         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
221                 "AR5K_TIMER2 (SWBA)", v, v >> 3);
222
223         v = ath5k_hw_reg_read(ah, AR5K_TIMER3);
224         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
225                 "AR5K_TIMER3 (ATIM)", v, v);
226
227         tsf = ath5k_hw_get_tsf64(ah);
228         len += snprintf(buf + len, sizeof(buf) - len,
229                 "TSF\t\t0x%016llx\tTU: %08x\n",
230                 (unsigned long long)tsf, TSF_TO_TU(tsf));
231
232         if (len > sizeof(buf))
233                 len = sizeof(buf);
234
235         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
236 }
237
238 static ssize_t write_file_beacon(struct file *file,
239                                  const char __user *userbuf,
240                                  size_t count, loff_t *ppos)
241 {
242         struct ath5k_hw *ah = file->private_data;
243         char buf[20];
244
245         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
246                 return -EFAULT;
247
248         if (strncmp(buf, "disable", 7) == 0) {
249                 AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
250                 printk(KERN_INFO "debugfs disable beacons\n");
251         } else if (strncmp(buf, "enable", 6) == 0) {
252                 AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
253                 printk(KERN_INFO "debugfs enable beacons\n");
254         }
255         return count;
256 }
257
258 static const struct file_operations fops_beacon = {
259         .read = read_file_beacon,
260         .write = write_file_beacon,
261         .open = simple_open,
262         .owner = THIS_MODULE,
263         .llseek = default_llseek,
264 };
265
266
267 /* debugfs: reset */
268
269 static ssize_t write_file_reset(struct file *file,
270                                  const char __user *userbuf,
271                                  size_t count, loff_t *ppos)
272 {
273         struct ath5k_hw *ah = file->private_data;
274         ATH5K_DBG(ah, ATH5K_DEBUG_RESET, "debug file triggered reset\n");
275         ieee80211_queue_work(ah->hw, &ah->reset_work);
276         return count;
277 }
278
279 static const struct file_operations fops_reset = {
280         .write = write_file_reset,
281         .open = simple_open,
282         .owner = THIS_MODULE,
283         .llseek = noop_llseek,
284 };
285
286
287 /* debugfs: debug level */
288
289 static const struct {
290         enum ath5k_debug_level level;
291         const char *name;
292         const char *desc;
293 } dbg_info[] = {
294         { ATH5K_DEBUG_RESET,    "reset",        "reset and initialization" },
295         { ATH5K_DEBUG_INTR,     "intr",         "interrupt handling" },
296         { ATH5K_DEBUG_MODE,     "mode",         "mode init/setup" },
297         { ATH5K_DEBUG_XMIT,     "xmit",         "basic xmit operation" },
298         { ATH5K_DEBUG_BEACON,   "beacon",       "beacon handling" },
299         { ATH5K_DEBUG_CALIBRATE, "calib",       "periodic calibration" },
300         { ATH5K_DEBUG_TXPOWER,  "txpower",      "transmit power setting" },
301         { ATH5K_DEBUG_LED,      "led",          "LED management" },
302         { ATH5K_DEBUG_DUMPBANDS, "dumpbands",   "dump bands" },
303         { ATH5K_DEBUG_DMA,      "dma",          "dma start/stop" },
304         { ATH5K_DEBUG_ANI,      "ani",          "adaptive noise immunity" },
305         { ATH5K_DEBUG_DESC,     "desc",         "descriptor chains" },
306         { ATH5K_DEBUG_ANY,      "all",          "show all debug levels" },
307 };
308
309 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
310                                    size_t count, loff_t *ppos)
311 {
312         struct ath5k_hw *ah = file->private_data;
313         char buf[700];
314         unsigned int len = 0;
315         unsigned int i;
316
317         len += snprintf(buf + len, sizeof(buf) - len,
318                 "DEBUG LEVEL: 0x%08x\n\n", ah->debug.level);
319
320         for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
321                 len += snprintf(buf + len, sizeof(buf) - len,
322                         "%10s %c 0x%08x - %s\n", dbg_info[i].name,
323                         ah->debug.level & dbg_info[i].level ? '+' : ' ',
324                         dbg_info[i].level, dbg_info[i].desc);
325         }
326         len += snprintf(buf + len, sizeof(buf) - len,
327                 "%10s %c 0x%08x - %s\n", dbg_info[i].name,
328                 ah->debug.level == dbg_info[i].level ? '+' : ' ',
329                 dbg_info[i].level, dbg_info[i].desc);
330
331         if (len > sizeof(buf))
332                 len = sizeof(buf);
333
334         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
335 }
336
337 static ssize_t write_file_debug(struct file *file,
338                                  const char __user *userbuf,
339                                  size_t count, loff_t *ppos)
340 {
341         struct ath5k_hw *ah = file->private_data;
342         unsigned int i;
343         char buf[20];
344
345         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
346                 return -EFAULT;
347
348         for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
349                 if (strncmp(buf, dbg_info[i].name,
350                                         strlen(dbg_info[i].name)) == 0) {
351                         ah->debug.level ^= dbg_info[i].level; /* toggle bit */
352                         break;
353                 }
354         }
355         return count;
356 }
357
358 static const struct file_operations fops_debug = {
359         .read = read_file_debug,
360         .write = write_file_debug,
361         .open = simple_open,
362         .owner = THIS_MODULE,
363         .llseek = default_llseek,
364 };
365
366
367 /* debugfs: antenna */
368
369 static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
370                                    size_t count, loff_t *ppos)
371 {
372         struct ath5k_hw *ah = file->private_data;
373         char buf[700];
374         unsigned int len = 0;
375         unsigned int i;
376         unsigned int v;
377
378         len += snprintf(buf + len, sizeof(buf) - len, "antenna mode\t%d\n",
379                 ah->ah_ant_mode);
380         len += snprintf(buf + len, sizeof(buf) - len, "default antenna\t%d\n",
381                 ah->ah_def_ant);
382         len += snprintf(buf + len, sizeof(buf) - len, "tx antenna\t%d\n",
383                 ah->ah_tx_ant);
384
385         len += snprintf(buf + len, sizeof(buf) - len, "\nANTENNA\t\tRX\tTX\n");
386         for (i = 1; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) {
387                 len += snprintf(buf + len, sizeof(buf) - len,
388                         "[antenna %d]\t%d\t%d\n",
389                         i, ah->stats.antenna_rx[i], ah->stats.antenna_tx[i]);
390         }
391         len += snprintf(buf + len, sizeof(buf) - len, "[invalid]\t%d\t%d\n",
392                         ah->stats.antenna_rx[0], ah->stats.antenna_tx[0]);
393
394         v = ath5k_hw_reg_read(ah, AR5K_DEFAULT_ANTENNA);
395         len += snprintf(buf + len, sizeof(buf) - len,
396                         "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
397
398         v = ath5k_hw_reg_read(ah, AR5K_STA_ID1);
399         len += snprintf(buf + len, sizeof(buf) - len,
400                 "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
401                 (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
402         len += snprintf(buf + len, sizeof(buf) - len,
403                 "AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
404                 (v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
405         len += snprintf(buf + len, sizeof(buf) - len,
406                 "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
407                 (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
408         len += snprintf(buf + len, sizeof(buf) - len,
409                 "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
410                 (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
411
412         v = ath5k_hw_reg_read(ah, AR5K_PHY_AGCCTL);
413         len += snprintf(buf + len, sizeof(buf) - len,
414                 "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
415                 (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
416
417         v = ath5k_hw_reg_read(ah, AR5K_PHY_RESTART);
418         len += snprintf(buf + len, sizeof(buf) - len,
419                 "AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
420                 (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
421
422         v = ath5k_hw_reg_read(ah, AR5K_PHY_FAST_ANT_DIV);
423         len += snprintf(buf + len, sizeof(buf) - len,
424                 "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
425                 (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
426
427         v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_0);
428         len += snprintf(buf + len, sizeof(buf) - len,
429                         "\nAR5K_PHY_ANT_SWITCH_TABLE_0\t0x%08x\n", v);
430         v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_1);
431         len += snprintf(buf + len, sizeof(buf) - len,
432                         "AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v);
433
434         if (len > sizeof(buf))
435                 len = sizeof(buf);
436
437         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
438 }
439
440 static ssize_t write_file_antenna(struct file *file,
441                                  const char __user *userbuf,
442                                  size_t count, loff_t *ppos)
443 {
444         struct ath5k_hw *ah = file->private_data;
445         unsigned int i;
446         char buf[20];
447
448         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
449                 return -EFAULT;
450
451         if (strncmp(buf, "diversity", 9) == 0) {
452                 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT);
453                 printk(KERN_INFO "ath5k debug: enable diversity\n");
454         } else if (strncmp(buf, "fixed-a", 7) == 0) {
455                 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A);
456                 printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
457         } else if (strncmp(buf, "fixed-b", 7) == 0) {
458                 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B);
459                 printk(KERN_INFO "ath5k debug: fixed antenna B\n");
460         } else if (strncmp(buf, "clear", 5) == 0) {
461                 for (i = 0; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) {
462                         ah->stats.antenna_rx[i] = 0;
463                         ah->stats.antenna_tx[i] = 0;
464                 }
465                 printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
466         }
467         return count;
468 }
469
470 static const struct file_operations fops_antenna = {
471         .read = read_file_antenna,
472         .write = write_file_antenna,
473         .open = simple_open,
474         .owner = THIS_MODULE,
475         .llseek = default_llseek,
476 };
477
478 /* debugfs: misc */
479
480 static ssize_t read_file_misc(struct file *file, char __user *user_buf,
481                                    size_t count, loff_t *ppos)
482 {
483         struct ath5k_hw *ah = file->private_data;
484         char buf[700];
485         unsigned int len = 0;
486         u32 filt = ath5k_hw_get_rx_filter(ah);
487
488         len += snprintf(buf + len, sizeof(buf) - len, "bssid-mask: %pM\n",
489                         ah->bssidmask);
490         len += snprintf(buf + len, sizeof(buf) - len, "filter-flags: 0x%x ",
491                         filt);
492         if (filt & AR5K_RX_FILTER_UCAST)
493                 len += snprintf(buf + len, sizeof(buf) - len, " UCAST");
494         if (filt & AR5K_RX_FILTER_MCAST)
495                 len += snprintf(buf + len, sizeof(buf) - len, " MCAST");
496         if (filt & AR5K_RX_FILTER_BCAST)
497                 len += snprintf(buf + len, sizeof(buf) - len, " BCAST");
498         if (filt & AR5K_RX_FILTER_CONTROL)
499                 len += snprintf(buf + len, sizeof(buf) - len, " CONTROL");
500         if (filt & AR5K_RX_FILTER_BEACON)
501                 len += snprintf(buf + len, sizeof(buf) - len, " BEACON");
502         if (filt & AR5K_RX_FILTER_PROM)
503                 len += snprintf(buf + len, sizeof(buf) - len, " PROM");
504         if (filt & AR5K_RX_FILTER_XRPOLL)
505                 len += snprintf(buf + len, sizeof(buf) - len, " XRPOLL");
506         if (filt & AR5K_RX_FILTER_PROBEREQ)
507                 len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ");
508         if (filt & AR5K_RX_FILTER_PHYERR_5212)
509                 len += snprintf(buf + len, sizeof(buf) - len, " PHYERR-5212");
510         if (filt & AR5K_RX_FILTER_RADARERR_5212)
511                 len += snprintf(buf + len, sizeof(buf) - len, " RADARERR-5212");
512         if (filt & AR5K_RX_FILTER_PHYERR_5211)
513                 snprintf(buf + len, sizeof(buf) - len, " PHYERR-5211");
514         if (filt & AR5K_RX_FILTER_RADARERR_5211)
515                 len += snprintf(buf + len, sizeof(buf) - len, " RADARERR-5211");
516
517         len += snprintf(buf + len, sizeof(buf) - len, "\nopmode: %s (%d)\n",
518                         ath_opmode_to_string(ah->opmode), ah->opmode);
519
520         if (len > sizeof(buf))
521                 len = sizeof(buf);
522
523         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
524 }
525
526 static const struct file_operations fops_misc = {
527         .read = read_file_misc,
528         .open = simple_open,
529         .owner = THIS_MODULE,
530 };
531
532
533 /* debugfs: frameerrors */
534
535 static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
536                                    size_t count, loff_t *ppos)
537 {
538         struct ath5k_hw *ah = file->private_data;
539         struct ath5k_statistics *st = &ah->stats;
540         char buf[700];
541         unsigned int len = 0;
542         int i;
543
544         len += snprintf(buf + len, sizeof(buf) - len,
545                         "RX\n---------------------\n");
546         len += snprintf(buf + len, sizeof(buf) - len, "CRC\t%u\t(%u%%)\n",
547                         st->rxerr_crc,
548                         st->rx_all_count > 0 ?
549                                 st->rxerr_crc * 100 / st->rx_all_count : 0);
550         len += snprintf(buf + len, sizeof(buf) - len, "PHY\t%u\t(%u%%)\n",
551                         st->rxerr_phy,
552                         st->rx_all_count > 0 ?
553                                 st->rxerr_phy * 100 / st->rx_all_count : 0);
554         for (i = 0; i < 32; i++) {
555                 if (st->rxerr_phy_code[i])
556                         len += snprintf(buf + len, sizeof(buf) - len,
557                                 " phy_err[%u]\t%u\n",
558                                 i, st->rxerr_phy_code[i]);
559         }
560
561         len += snprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n",
562                         st->rxerr_fifo,
563                         st->rx_all_count > 0 ?
564                                 st->rxerr_fifo * 100 / st->rx_all_count : 0);
565         len += snprintf(buf + len, sizeof(buf) - len, "decrypt\t%u\t(%u%%)\n",
566                         st->rxerr_decrypt,
567                         st->rx_all_count > 0 ?
568                                 st->rxerr_decrypt * 100 / st->rx_all_count : 0);
569         len += snprintf(buf + len, sizeof(buf) - len, "MIC\t%u\t(%u%%)\n",
570                         st->rxerr_mic,
571                         st->rx_all_count > 0 ?
572                                 st->rxerr_mic * 100 / st->rx_all_count : 0);
573         len += snprintf(buf + len, sizeof(buf) - len, "process\t%u\t(%u%%)\n",
574                         st->rxerr_proc,
575                         st->rx_all_count > 0 ?
576                                 st->rxerr_proc * 100 / st->rx_all_count : 0);
577         len += snprintf(buf + len, sizeof(buf) - len, "jumbo\t%u\t(%u%%)\n",
578                         st->rxerr_jumbo,
579                         st->rx_all_count > 0 ?
580                                 st->rxerr_jumbo * 100 / st->rx_all_count : 0);
581         len += snprintf(buf + len, sizeof(buf) - len, "[RX all\t%u]\n",
582                         st->rx_all_count);
583         len += snprintf(buf + len, sizeof(buf) - len, "RX-all-bytes\t%u\n",
584                         st->rx_bytes_count);
585
586         len += snprintf(buf + len, sizeof(buf) - len,
587                         "\nTX\n---------------------\n");
588         len += snprintf(buf + len, sizeof(buf) - len, "retry\t%u\t(%u%%)\n",
589                         st->txerr_retry,
590                         st->tx_all_count > 0 ?
591                                 st->txerr_retry * 100 / st->tx_all_count : 0);
592         len += snprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n",
593                         st->txerr_fifo,
594                         st->tx_all_count > 0 ?
595                                 st->txerr_fifo * 100 / st->tx_all_count : 0);
596         len += snprintf(buf + len, sizeof(buf) - len, "filter\t%u\t(%u%%)\n",
597                         st->txerr_filt,
598                         st->tx_all_count > 0 ?
599                                 st->txerr_filt * 100 / st->tx_all_count : 0);
600         len += snprintf(buf + len, sizeof(buf) - len, "[TX all\t%u]\n",
601                         st->tx_all_count);
602         len += snprintf(buf + len, sizeof(buf) - len, "TX-all-bytes\t%u\n",
603                         st->tx_bytes_count);
604
605         if (len > sizeof(buf))
606                 len = sizeof(buf);
607
608         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
609 }
610
611 static ssize_t write_file_frameerrors(struct file *file,
612                                  const char __user *userbuf,
613                                  size_t count, loff_t *ppos)
614 {
615         struct ath5k_hw *ah = file->private_data;
616         struct ath5k_statistics *st = &ah->stats;
617         char buf[20];
618
619         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
620                 return -EFAULT;
621
622         if (strncmp(buf, "clear", 5) == 0) {
623                 st->rxerr_crc = 0;
624                 st->rxerr_phy = 0;
625                 st->rxerr_fifo = 0;
626                 st->rxerr_decrypt = 0;
627                 st->rxerr_mic = 0;
628                 st->rxerr_proc = 0;
629                 st->rxerr_jumbo = 0;
630                 st->rx_all_count = 0;
631                 st->txerr_retry = 0;
632                 st->txerr_fifo = 0;
633                 st->txerr_filt = 0;
634                 st->tx_all_count = 0;
635                 printk(KERN_INFO "ath5k debug: cleared frameerrors stats\n");
636         }
637         return count;
638 }
639
640 static const struct file_operations fops_frameerrors = {
641         .read = read_file_frameerrors,
642         .write = write_file_frameerrors,
643         .open = simple_open,
644         .owner = THIS_MODULE,
645         .llseek = default_llseek,
646 };
647
648
649 /* debugfs: ani */
650
651 static ssize_t read_file_ani(struct file *file, char __user *user_buf,
652                                    size_t count, loff_t *ppos)
653 {
654         struct ath5k_hw *ah = file->private_data;
655         struct ath5k_statistics *st = &ah->stats;
656         struct ath5k_ani_state *as = &ah->ani_state;
657
658         char buf[700];
659         unsigned int len = 0;
660
661         len += snprintf(buf + len, sizeof(buf) - len,
662                         "HW has PHY error counters:\t%s\n",
663                         ah->ah_capabilities.cap_has_phyerr_counters ?
664                         "yes" : "no");
665         len += snprintf(buf + len, sizeof(buf) - len,
666                         "HW max spur immunity level:\t%d\n",
667                         as->max_spur_level);
668         len += snprintf(buf + len, sizeof(buf) - len,
669                 "\nANI state\n--------------------------------------------\n");
670         len += snprintf(buf + len, sizeof(buf) - len, "operating mode:\t\t\t");
671         switch (as->ani_mode) {
672         case ATH5K_ANI_MODE_OFF:
673                 len += snprintf(buf + len, sizeof(buf) - len, "OFF\n");
674                 break;
675         case ATH5K_ANI_MODE_MANUAL_LOW:
676                 len += snprintf(buf + len, sizeof(buf) - len,
677                         "MANUAL LOW\n");
678                 break;
679         case ATH5K_ANI_MODE_MANUAL_HIGH:
680                 len += snprintf(buf + len, sizeof(buf) - len,
681                         "MANUAL HIGH\n");
682                 break;
683         case ATH5K_ANI_MODE_AUTO:
684                 len += snprintf(buf + len, sizeof(buf) - len, "AUTO\n");
685                 break;
686         default:
687                 len += snprintf(buf + len, sizeof(buf) - len,
688                         "??? (not good)\n");
689                 break;
690         }
691         len += snprintf(buf + len, sizeof(buf) - len,
692                         "noise immunity level:\t\t%d\n",
693                         as->noise_imm_level);
694         len += snprintf(buf + len, sizeof(buf) - len,
695                         "spur immunity level:\t\t%d\n",
696                         as->spur_level);
697         len += snprintf(buf + len, sizeof(buf) - len,
698                         "firstep level:\t\t\t%d\n",
699                         as->firstep_level);
700         len += snprintf(buf + len, sizeof(buf) - len,
701                         "OFDM weak signal detection:\t%s\n",
702                         as->ofdm_weak_sig ? "on" : "off");
703         len += snprintf(buf + len, sizeof(buf) - len,
704                         "CCK weak signal detection:\t%s\n",
705                         as->cck_weak_sig ? "on" : "off");
706
707         len += snprintf(buf + len, sizeof(buf) - len,
708                         "\nMIB INTERRUPTS:\t\t%u\n",
709                         st->mib_intr);
710         len += snprintf(buf + len, sizeof(buf) - len,
711                         "beacon RSSI average:\t%d\n",
712                         (int)ewma_read(&ah->ah_beacon_rssi_avg));
713
714 #define CC_PRINT(_struct, _field) \
715         _struct._field, \
716         _struct.cycles > 0 ? \
717         _struct._field * 100 / _struct.cycles : 0
718
719         len += snprintf(buf + len, sizeof(buf) - len,
720                         "profcnt tx\t\t%u\t(%d%%)\n",
721                         CC_PRINT(as->last_cc, tx_frame));
722         len += snprintf(buf + len, sizeof(buf) - len,
723                         "profcnt rx\t\t%u\t(%d%%)\n",
724                         CC_PRINT(as->last_cc, rx_frame));
725         len += snprintf(buf + len, sizeof(buf) - len,
726                         "profcnt busy\t\t%u\t(%d%%)\n",
727                         CC_PRINT(as->last_cc, rx_busy));
728 #undef CC_PRINT
729         len += snprintf(buf + len, sizeof(buf) - len, "profcnt cycles\t\t%u\n",
730                         as->last_cc.cycles);
731         len += snprintf(buf + len, sizeof(buf) - len,
732                         "listen time\t\t%d\tlast: %d\n",
733                         as->listen_time, as->last_listen);
734         len += snprintf(buf + len, sizeof(buf) - len,
735                         "OFDM errors\t\t%u\tlast: %u\tsum: %u\n",
736                         as->ofdm_errors, as->last_ofdm_errors,
737                         as->sum_ofdm_errors);
738         len += snprintf(buf + len, sizeof(buf) - len,
739                         "CCK errors\t\t%u\tlast: %u\tsum: %u\n",
740                         as->cck_errors, as->last_cck_errors,
741                         as->sum_cck_errors);
742         len += snprintf(buf + len, sizeof(buf) - len,
743                         "AR5K_PHYERR_CNT1\t%x\t(=%d)\n",
744                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1),
745                         ATH5K_ANI_OFDM_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
746                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1)));
747         len += snprintf(buf + len, sizeof(buf) - len,
748                         "AR5K_PHYERR_CNT2\t%x\t(=%d)\n",
749                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2),
750                         ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
751                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2)));
752
753         if (len > sizeof(buf))
754                 len = sizeof(buf);
755
756         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
757 }
758
759 static ssize_t write_file_ani(struct file *file,
760                                  const char __user *userbuf,
761                                  size_t count, loff_t *ppos)
762 {
763         struct ath5k_hw *ah = file->private_data;
764         char buf[20];
765
766         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
767                 return -EFAULT;
768
769         if (strncmp(buf, "sens-low", 8) == 0) {
770                 ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_HIGH);
771         } else if (strncmp(buf, "sens-high", 9) == 0) {
772                 ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_LOW);
773         } else if (strncmp(buf, "ani-off", 7) == 0) {
774                 ath5k_ani_init(ah, ATH5K_ANI_MODE_OFF);
775         } else if (strncmp(buf, "ani-on", 6) == 0) {
776                 ath5k_ani_init(ah, ATH5K_ANI_MODE_AUTO);
777         } else if (strncmp(buf, "noise-low", 9) == 0) {
778                 ath5k_ani_set_noise_immunity_level(ah, 0);
779         } else if (strncmp(buf, "noise-high", 10) == 0) {
780                 ath5k_ani_set_noise_immunity_level(ah,
781                                                    ATH5K_ANI_MAX_NOISE_IMM_LVL);
782         } else if (strncmp(buf, "spur-low", 8) == 0) {
783                 ath5k_ani_set_spur_immunity_level(ah, 0);
784         } else if (strncmp(buf, "spur-high", 9) == 0) {
785                 ath5k_ani_set_spur_immunity_level(ah,
786                                                   ah->ani_state.max_spur_level);
787         } else if (strncmp(buf, "fir-low", 7) == 0) {
788                 ath5k_ani_set_firstep_level(ah, 0);
789         } else if (strncmp(buf, "fir-high", 8) == 0) {
790                 ath5k_ani_set_firstep_level(ah, ATH5K_ANI_MAX_FIRSTEP_LVL);
791         } else if (strncmp(buf, "ofdm-off", 8) == 0) {
792                 ath5k_ani_set_ofdm_weak_signal_detection(ah, false);
793         } else if (strncmp(buf, "ofdm-on", 7) == 0) {
794                 ath5k_ani_set_ofdm_weak_signal_detection(ah, true);
795         } else if (strncmp(buf, "cck-off", 7) == 0) {
796                 ath5k_ani_set_cck_weak_signal_detection(ah, false);
797         } else if (strncmp(buf, "cck-on", 6) == 0) {
798                 ath5k_ani_set_cck_weak_signal_detection(ah, true);
799         }
800         return count;
801 }
802
803 static const struct file_operations fops_ani = {
804         .read = read_file_ani,
805         .write = write_file_ani,
806         .open = simple_open,
807         .owner = THIS_MODULE,
808         .llseek = default_llseek,
809 };
810
811
812 /* debugfs: queues etc */
813
814 static ssize_t read_file_queue(struct file *file, char __user *user_buf,
815                                    size_t count, loff_t *ppos)
816 {
817         struct ath5k_hw *ah = file->private_data;
818         char buf[700];
819         unsigned int len = 0;
820
821         struct ath5k_txq *txq;
822         struct ath5k_buf *bf, *bf0;
823         int i, n;
824
825         len += snprintf(buf + len, sizeof(buf) - len,
826                         "available txbuffers: %d\n", ah->txbuf_len);
827
828         for (i = 0; i < ARRAY_SIZE(ah->txqs); i++) {
829                 txq = &ah->txqs[i];
830
831                 len += snprintf(buf + len, sizeof(buf) - len,
832                         "%02d: %ssetup\n", i, txq->setup ? "" : "not ");
833
834                 if (!txq->setup)
835                         continue;
836
837                 n = 0;
838                 spin_lock_bh(&txq->lock);
839                 list_for_each_entry_safe(bf, bf0, &txq->q, list)
840                         n++;
841                 spin_unlock_bh(&txq->lock);
842
843                 len += snprintf(buf + len, sizeof(buf) - len,
844                                 "  len: %d bufs: %d\n", txq->txq_len, n);
845                 len += snprintf(buf + len, sizeof(buf) - len,
846                                 "  stuck: %d\n", txq->txq_stuck);
847         }
848
849         if (len > sizeof(buf))
850                 len = sizeof(buf);
851
852         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
853 }
854
855 static ssize_t write_file_queue(struct file *file,
856                                  const char __user *userbuf,
857                                  size_t count, loff_t *ppos)
858 {
859         struct ath5k_hw *ah = file->private_data;
860         char buf[20];
861
862         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
863                 return -EFAULT;
864
865         if (strncmp(buf, "start", 5) == 0)
866                 ieee80211_wake_queues(ah->hw);
867         else if (strncmp(buf, "stop", 4) == 0)
868                 ieee80211_stop_queues(ah->hw);
869
870         return count;
871 }
872
873
874 static const struct file_operations fops_queue = {
875         .read = read_file_queue,
876         .write = write_file_queue,
877         .open = simple_open,
878         .owner = THIS_MODULE,
879         .llseek = default_llseek,
880 };
881
882
883 void
884 ath5k_debug_init_device(struct ath5k_hw *ah)
885 {
886         struct dentry *phydir;
887
888         ah->debug.level = ath5k_debug;
889
890         phydir = debugfs_create_dir("ath5k", ah->hw->wiphy->debugfsdir);
891         if (!phydir)
892                 return;
893
894         debugfs_create_file("debug", S_IWUSR | S_IRUSR, phydir, ah,
895                             &fops_debug);
896
897         debugfs_create_file("registers", S_IRUSR, phydir, ah, &fops_registers);
898
899         debugfs_create_file("beacon", S_IWUSR | S_IRUSR, phydir, ah,
900                             &fops_beacon);
901
902         debugfs_create_file("reset", S_IWUSR, phydir, ah, &fops_reset);
903
904         debugfs_create_file("antenna", S_IWUSR | S_IRUSR, phydir, ah,
905                             &fops_antenna);
906
907         debugfs_create_file("misc", S_IRUSR, phydir, ah, &fops_misc);
908
909         debugfs_create_file("frameerrors", S_IWUSR | S_IRUSR, phydir, ah,
910                             &fops_frameerrors);
911
912         debugfs_create_file("ani", S_IWUSR | S_IRUSR, phydir, ah, &fops_ani);
913
914         debugfs_create_file("queue", S_IWUSR | S_IRUSR, phydir, ah,
915                             &fops_queue);
916
917         debugfs_create_bool("32khz_clock", S_IWUSR | S_IRUSR, phydir,
918                             &ah->ah_use_32khz_clock);
919 }
920
921 /* functions used in other places */
922
923 void
924 ath5k_debug_dump_bands(struct ath5k_hw *ah)
925 {
926         unsigned int b, i;
927
928         if (likely(!(ah->debug.level & ATH5K_DEBUG_DUMPBANDS)))
929                 return;
930
931         BUG_ON(!ah->sbands);
932
933         for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
934                 struct ieee80211_supported_band *band = &ah->sbands[b];
935                 char bname[6];
936                 switch (band->band) {
937                 case IEEE80211_BAND_2GHZ:
938                         strcpy(bname, "2 GHz");
939                         break;
940                 case IEEE80211_BAND_5GHZ:
941                         strcpy(bname, "5 GHz");
942                         break;
943                 default:
944                         printk(KERN_DEBUG "Band not supported: %d\n",
945                                 band->band);
946                         return;
947                 }
948                 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
949                                 band->n_channels, band->n_bitrates);
950                 printk(KERN_DEBUG " channels:\n");
951                 for (i = 0; i < band->n_channels; i++)
952                         printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
953                                         ieee80211_frequency_to_channel(
954                                                 band->channels[i].center_freq),
955                                         band->channels[i].center_freq,
956                                         band->channels[i].hw_value,
957                                         band->channels[i].flags);
958                 printk(KERN_DEBUG " rates:\n");
959                 for (i = 0; i < band->n_bitrates; i++)
960                         printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
961                                         band->bitrates[i].bitrate,
962                                         band->bitrates[i].hw_value,
963                                         band->bitrates[i].flags,
964                                         band->bitrates[i].hw_value_short);
965         }
966 }
967
968 static inline void
969 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
970                        struct ath5k_rx_status *rs)
971 {
972         struct ath5k_desc *ds = bf->desc;
973         struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
974
975         printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
976                 ds, (unsigned long long)bf->daddr,
977                 ds->ds_link, ds->ds_data,
978                 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
979                 rd->rx_stat.rx_status_0, rd->rx_stat.rx_status_1,
980                 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
981 }
982
983 void
984 ath5k_debug_printrxbuffs(struct ath5k_hw *ah)
985 {
986         struct ath5k_desc *ds;
987         struct ath5k_buf *bf;
988         struct ath5k_rx_status rs = {};
989         int status;
990
991         if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC)))
992                 return;
993
994         printk(KERN_DEBUG "rxdp %x, rxlink %p\n",
995                 ath5k_hw_get_rxdp(ah), ah->rxlink);
996
997         spin_lock_bh(&ah->rxbuflock);
998         list_for_each_entry(bf, &ah->rxbuf, list) {
999                 ds = bf->desc;
1000                 status = ah->ah_proc_rx_desc(ah, ds, &rs);
1001                 if (!status)
1002                         ath5k_debug_printrxbuf(bf, status == 0, &rs);
1003         }
1004         spin_unlock_bh(&ah->rxbuflock);
1005 }
1006
1007 void
1008 ath5k_debug_printtxbuf(struct ath5k_hw *ah, struct ath5k_buf *bf)
1009 {
1010         struct ath5k_desc *ds = bf->desc;
1011         struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
1012         struct ath5k_tx_status ts = {};
1013         int done;
1014
1015         if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC)))
1016                 return;
1017
1018         done = ah->ah_proc_tx_desc(ah, bf->desc, &ts);
1019
1020         printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
1021                 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
1022                 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
1023                 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
1024                 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
1025                 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
1026 }