mac80211: fix TKIP replay vulnerability
[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
61 #include "base.h"
62 #include "debug.h"
63
64 static unsigned int ath5k_debug;
65 module_param_named(debug, ath5k_debug, uint, 0);
66
67
68 #ifdef CONFIG_ATH5K_DEBUG
69
70 #include <linux/seq_file.h>
71 #include "reg.h"
72 #include "ani.h"
73
74 static int ath5k_debugfs_open(struct inode *inode, struct file *file)
75 {
76         file->private_data = inode->i_private;
77         return 0;
78 }
79
80
81 /* debugfs: registers */
82
83 struct reg {
84         const char *name;
85         int addr;
86 };
87
88 #define REG_STRUCT_INIT(r) { #r, r }
89
90 /* just a few random registers, might want to add more */
91 static const struct reg regs[] = {
92         REG_STRUCT_INIT(AR5K_CR),
93         REG_STRUCT_INIT(AR5K_RXDP),
94         REG_STRUCT_INIT(AR5K_CFG),
95         REG_STRUCT_INIT(AR5K_IER),
96         REG_STRUCT_INIT(AR5K_BCR),
97         REG_STRUCT_INIT(AR5K_RTSD0),
98         REG_STRUCT_INIT(AR5K_RTSD1),
99         REG_STRUCT_INIT(AR5K_TXCFG),
100         REG_STRUCT_INIT(AR5K_RXCFG),
101         REG_STRUCT_INIT(AR5K_RXJLA),
102         REG_STRUCT_INIT(AR5K_MIBC),
103         REG_STRUCT_INIT(AR5K_TOPS),
104         REG_STRUCT_INIT(AR5K_RXNOFRM),
105         REG_STRUCT_INIT(AR5K_TXNOFRM),
106         REG_STRUCT_INIT(AR5K_RPGTO),
107         REG_STRUCT_INIT(AR5K_RFCNT),
108         REG_STRUCT_INIT(AR5K_MISC),
109         REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT),
110         REG_STRUCT_INIT(AR5K_ISR),
111         REG_STRUCT_INIT(AR5K_PISR),
112         REG_STRUCT_INIT(AR5K_SISR0),
113         REG_STRUCT_INIT(AR5K_SISR1),
114         REG_STRUCT_INIT(AR5K_SISR2),
115         REG_STRUCT_INIT(AR5K_SISR3),
116         REG_STRUCT_INIT(AR5K_SISR4),
117         REG_STRUCT_INIT(AR5K_IMR),
118         REG_STRUCT_INIT(AR5K_PIMR),
119         REG_STRUCT_INIT(AR5K_SIMR0),
120         REG_STRUCT_INIT(AR5K_SIMR1),
121         REG_STRUCT_INIT(AR5K_SIMR2),
122         REG_STRUCT_INIT(AR5K_SIMR3),
123         REG_STRUCT_INIT(AR5K_SIMR4),
124         REG_STRUCT_INIT(AR5K_DCM_ADDR),
125         REG_STRUCT_INIT(AR5K_DCCFG),
126         REG_STRUCT_INIT(AR5K_CCFG),
127         REG_STRUCT_INIT(AR5K_CPC0),
128         REG_STRUCT_INIT(AR5K_CPC1),
129         REG_STRUCT_INIT(AR5K_CPC2),
130         REG_STRUCT_INIT(AR5K_CPC3),
131         REG_STRUCT_INIT(AR5K_CPCOVF),
132         REG_STRUCT_INIT(AR5K_RESET_CTL),
133         REG_STRUCT_INIT(AR5K_SLEEP_CTL),
134         REG_STRUCT_INIT(AR5K_INTPEND),
135         REG_STRUCT_INIT(AR5K_SFR),
136         REG_STRUCT_INIT(AR5K_PCICFG),
137         REG_STRUCT_INIT(AR5K_GPIOCR),
138         REG_STRUCT_INIT(AR5K_GPIODO),
139         REG_STRUCT_INIT(AR5K_SREV),
140 };
141
142 static void *reg_start(struct seq_file *seq, loff_t *pos)
143 {
144         return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
145 }
146
147 static void reg_stop(struct seq_file *seq, void *p)
148 {
149         /* nothing to do */
150 }
151
152 static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
153 {
154         ++*pos;
155         return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
156 }
157
158 static int reg_show(struct seq_file *seq, void *p)
159 {
160         struct ath5k_softc *sc = seq->private;
161         struct reg *r = p;
162         seq_printf(seq, "%-25s0x%08x\n", r->name,
163                 ath5k_hw_reg_read(sc->ah, r->addr));
164         return 0;
165 }
166
167 static const struct seq_operations register_seq_ops = {
168         .start = reg_start,
169         .next  = reg_next,
170         .stop  = reg_stop,
171         .show  = reg_show
172 };
173
174 static int open_file_registers(struct inode *inode, struct file *file)
175 {
176         struct seq_file *s;
177         int res;
178         res = seq_open(file, &register_seq_ops);
179         if (res == 0) {
180                 s = file->private_data;
181                 s->private = inode->i_private;
182         }
183         return res;
184 }
185
186 static const struct file_operations fops_registers = {
187         .open = open_file_registers,
188         .read    = seq_read,
189         .llseek  = seq_lseek,
190         .release = seq_release,
191         .owner = THIS_MODULE,
192 };
193
194
195 /* debugfs: beacons */
196
197 static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
198                                    size_t count, loff_t *ppos)
199 {
200         struct ath5k_softc *sc = file->private_data;
201         struct ath5k_hw *ah = sc->ah;
202         char buf[500];
203         unsigned int len = 0;
204         unsigned int v;
205         u64 tsf;
206
207         v = ath5k_hw_reg_read(sc->ah, AR5K_BEACON);
208         len += snprintf(buf+len, sizeof(buf)-len,
209                 "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
210                 "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
211                 (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
212
213         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n",
214                 "AR5K_LAST_TSTP", ath5k_hw_reg_read(sc->ah, AR5K_LAST_TSTP));
215
216         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n\n",
217                 "AR5K_BEACON_CNT", ath5k_hw_reg_read(sc->ah, AR5K_BEACON_CNT));
218
219         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER0);
220         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
221                 "AR5K_TIMER0 (TBTT)", v, v);
222
223         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER1);
224         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
225                 "AR5K_TIMER1 (DMA)", v, v >> 3);
226
227         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER2);
228         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
229                 "AR5K_TIMER2 (SWBA)", v, v >> 3);
230
231         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER3);
232         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
233                 "AR5K_TIMER3 (ATIM)", v, v);
234
235         tsf = ath5k_hw_get_tsf64(sc->ah);
236         len += snprintf(buf+len, sizeof(buf)-len,
237                 "TSF\t\t0x%016llx\tTU: %08x\n",
238                 (unsigned long long)tsf, TSF_TO_TU(tsf));
239
240         if (len > sizeof(buf))
241                 len = sizeof(buf);
242
243         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
244 }
245
246 static ssize_t write_file_beacon(struct file *file,
247                                  const char __user *userbuf,
248                                  size_t count, loff_t *ppos)
249 {
250         struct ath5k_softc *sc = file->private_data;
251         struct ath5k_hw *ah = sc->ah;
252         char buf[20];
253
254         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
255                 return -EFAULT;
256
257         if (strncmp(buf, "disable", 7) == 0) {
258                 AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
259                 printk(KERN_INFO "debugfs disable beacons\n");
260         } else if (strncmp(buf, "enable", 6) == 0) {
261                 AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
262                 printk(KERN_INFO "debugfs enable beacons\n");
263         }
264         return count;
265 }
266
267 static const struct file_operations fops_beacon = {
268         .read = read_file_beacon,
269         .write = write_file_beacon,
270         .open = ath5k_debugfs_open,
271         .owner = THIS_MODULE,
272         .llseek = default_llseek,
273 };
274
275
276 /* debugfs: reset */
277
278 static ssize_t write_file_reset(struct file *file,
279                                  const char __user *userbuf,
280                                  size_t count, loff_t *ppos)
281 {
282         struct ath5k_softc *sc = file->private_data;
283         ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "debug file triggered reset\n");
284         ieee80211_queue_work(sc->hw, &sc->reset_work);
285         return count;
286 }
287
288 static const struct file_operations fops_reset = {
289         .write = write_file_reset,
290         .open = ath5k_debugfs_open,
291         .owner = THIS_MODULE,
292         .llseek = noop_llseek,
293 };
294
295
296 /* debugfs: debug level */
297
298 static const struct {
299         enum ath5k_debug_level level;
300         const char *name;
301         const char *desc;
302 } dbg_info[] = {
303         { ATH5K_DEBUG_RESET,    "reset",        "reset and initialization" },
304         { ATH5K_DEBUG_INTR,     "intr",         "interrupt handling" },
305         { ATH5K_DEBUG_MODE,     "mode",         "mode init/setup" },
306         { ATH5K_DEBUG_XMIT,     "xmit",         "basic xmit operation" },
307         { ATH5K_DEBUG_BEACON,   "beacon",       "beacon handling" },
308         { ATH5K_DEBUG_CALIBRATE, "calib",       "periodic calibration" },
309         { ATH5K_DEBUG_TXPOWER,  "txpower",      "transmit power setting" },
310         { ATH5K_DEBUG_LED,      "led",          "LED management" },
311         { ATH5K_DEBUG_DUMPBANDS, "dumpbands",   "dump bands" },
312         { ATH5K_DEBUG_DMA,      "dma",          "dma start/stop" },
313         { ATH5K_DEBUG_ANI,      "ani",          "adaptive noise immunity" },
314         { ATH5K_DEBUG_DESC,     "desc",         "descriptor chains" },
315         { ATH5K_DEBUG_ANY,      "all",          "show all debug levels" },
316 };
317
318 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
319                                    size_t count, loff_t *ppos)
320 {
321         struct ath5k_softc *sc = file->private_data;
322         char buf[700];
323         unsigned int len = 0;
324         unsigned int i;
325
326         len += snprintf(buf+len, sizeof(buf)-len,
327                 "DEBUG LEVEL: 0x%08x\n\n", sc->debug.level);
328
329         for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
330                 len += snprintf(buf+len, sizeof(buf)-len,
331                         "%10s %c 0x%08x - %s\n", dbg_info[i].name,
332                         sc->debug.level & dbg_info[i].level ? '+' : ' ',
333                         dbg_info[i].level, dbg_info[i].desc);
334         }
335         len += snprintf(buf+len, sizeof(buf)-len,
336                 "%10s %c 0x%08x - %s\n", dbg_info[i].name,
337                 sc->debug.level == dbg_info[i].level ? '+' : ' ',
338                 dbg_info[i].level, dbg_info[i].desc);
339
340         if (len > sizeof(buf))
341                 len = sizeof(buf);
342
343         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
344 }
345
346 static ssize_t write_file_debug(struct file *file,
347                                  const char __user *userbuf,
348                                  size_t count, loff_t *ppos)
349 {
350         struct ath5k_softc *sc = file->private_data;
351         unsigned int i;
352         char buf[20];
353
354         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
355                 return -EFAULT;
356
357         for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
358                 if (strncmp(buf, dbg_info[i].name,
359                                         strlen(dbg_info[i].name)) == 0) {
360                         sc->debug.level ^= dbg_info[i].level; /* toggle bit */
361                         break;
362                 }
363         }
364         return count;
365 }
366
367 static const struct file_operations fops_debug = {
368         .read = read_file_debug,
369         .write = write_file_debug,
370         .open = ath5k_debugfs_open,
371         .owner = THIS_MODULE,
372         .llseek = default_llseek,
373 };
374
375
376 /* debugfs: antenna */
377
378 static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
379                                    size_t count, loff_t *ppos)
380 {
381         struct ath5k_softc *sc = file->private_data;
382         char buf[700];
383         unsigned int len = 0;
384         unsigned int i;
385         unsigned int v;
386
387         len += snprintf(buf+len, sizeof(buf)-len, "antenna mode\t%d\n",
388                 sc->ah->ah_ant_mode);
389         len += snprintf(buf+len, sizeof(buf)-len, "default antenna\t%d\n",
390                 sc->ah->ah_def_ant);
391         len += snprintf(buf+len, sizeof(buf)-len, "tx antenna\t%d\n",
392                 sc->ah->ah_tx_ant);
393
394         len += snprintf(buf+len, sizeof(buf)-len, "\nANTENNA\t\tRX\tTX\n");
395         for (i = 1; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
396                 len += snprintf(buf+len, sizeof(buf)-len,
397                         "[antenna %d]\t%d\t%d\n",
398                         i, sc->stats.antenna_rx[i], sc->stats.antenna_tx[i]);
399         }
400         len += snprintf(buf+len, sizeof(buf)-len, "[invalid]\t%d\t%d\n",
401                         sc->stats.antenna_rx[0], sc->stats.antenna_tx[0]);
402
403         v = ath5k_hw_reg_read(sc->ah, AR5K_DEFAULT_ANTENNA);
404         len += snprintf(buf+len, sizeof(buf)-len,
405                         "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
406
407         v = ath5k_hw_reg_read(sc->ah, AR5K_STA_ID1);
408         len += snprintf(buf+len, sizeof(buf)-len,
409                 "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
410                 (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
411         len += snprintf(buf+len, sizeof(buf)-len,
412                 "AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
413                 (v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
414         len += snprintf(buf+len, sizeof(buf)-len,
415                 "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
416                 (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
417         len += snprintf(buf+len, sizeof(buf)-len,
418                 "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
419                 (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
420
421         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_AGCCTL);
422         len += snprintf(buf+len, sizeof(buf)-len,
423                 "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
424                 (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
425
426         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_RESTART);
427         len += snprintf(buf+len, sizeof(buf)-len,
428                 "AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
429                 (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
430
431         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_FAST_ANT_DIV);
432         len += snprintf(buf+len, sizeof(buf)-len,
433                 "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
434                 (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
435
436         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_ANT_SWITCH_TABLE_0);
437         len += snprintf(buf+len, sizeof(buf)-len,
438                         "\nAR5K_PHY_ANT_SWITCH_TABLE_0\t0x%08x\n", v);
439         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_ANT_SWITCH_TABLE_1);
440         len += snprintf(buf+len, sizeof(buf)-len,
441                         "AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v);
442
443         if (len > sizeof(buf))
444                 len = sizeof(buf);
445
446         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
447 }
448
449 static ssize_t write_file_antenna(struct file *file,
450                                  const char __user *userbuf,
451                                  size_t count, loff_t *ppos)
452 {
453         struct ath5k_softc *sc = file->private_data;
454         unsigned int i;
455         char buf[20];
456
457         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
458                 return -EFAULT;
459
460         if (strncmp(buf, "diversity", 9) == 0) {
461                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_DEFAULT);
462                 printk(KERN_INFO "ath5k debug: enable diversity\n");
463         } else if (strncmp(buf, "fixed-a", 7) == 0) {
464                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_A);
465                 printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
466         } else if (strncmp(buf, "fixed-b", 7) == 0) {
467                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_B);
468                 printk(KERN_INFO "ath5k debug: fixed antenna B\n");
469         } else if (strncmp(buf, "clear", 5) == 0) {
470                 for (i = 0; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
471                         sc->stats.antenna_rx[i] = 0;
472                         sc->stats.antenna_tx[i] = 0;
473                 }
474                 printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
475         }
476         return count;
477 }
478
479 static const struct file_operations fops_antenna = {
480         .read = read_file_antenna,
481         .write = write_file_antenna,
482         .open = ath5k_debugfs_open,
483         .owner = THIS_MODULE,
484         .llseek = default_llseek,
485 };
486
487 /* debugfs: misc */
488
489 static ssize_t read_file_misc(struct file *file, char __user *user_buf,
490                                    size_t count, loff_t *ppos)
491 {
492         struct ath5k_softc *sc = file->private_data;
493         char buf[700];
494         unsigned int len = 0;
495         u32 filt = ath5k_hw_get_rx_filter(sc->ah);
496
497         len += snprintf(buf+len, sizeof(buf)-len, "bssid-mask: %pM\n",
498                         sc->bssidmask);
499         len += snprintf(buf+len, sizeof(buf)-len, "filter-flags: 0x%x ",
500                         filt);
501         if (filt & AR5K_RX_FILTER_UCAST)
502                 len += snprintf(buf+len, sizeof(buf)-len, " UCAST");
503         if (filt & AR5K_RX_FILTER_MCAST)
504                 len += snprintf(buf+len, sizeof(buf)-len, " MCAST");
505         if (filt & AR5K_RX_FILTER_BCAST)
506                 len += snprintf(buf+len, sizeof(buf)-len, " BCAST");
507         if (filt & AR5K_RX_FILTER_CONTROL)
508                 len += snprintf(buf+len, sizeof(buf)-len, " CONTROL");
509         if (filt & AR5K_RX_FILTER_BEACON)
510                 len += snprintf(buf+len, sizeof(buf)-len, " BEACON");
511         if (filt & AR5K_RX_FILTER_PROM)
512                 len += snprintf(buf+len, sizeof(buf)-len, " PROM");
513         if (filt & AR5K_RX_FILTER_XRPOLL)
514                 len += snprintf(buf+len, sizeof(buf)-len, " XRPOLL");
515         if (filt & AR5K_RX_FILTER_PROBEREQ)
516                 len += snprintf(buf+len, sizeof(buf)-len, " PROBEREQ");
517         if (filt & AR5K_RX_FILTER_PHYERR_5212)
518                 len += snprintf(buf+len, sizeof(buf)-len, " PHYERR-5212");
519         if (filt & AR5K_RX_FILTER_RADARERR_5212)
520                 len += snprintf(buf+len, sizeof(buf)-len, " RADARERR-5212");
521         if (filt & AR5K_RX_FILTER_PHYERR_5211)
522                 snprintf(buf+len, sizeof(buf)-len, " PHYERR-5211");
523         if (filt & AR5K_RX_FILTER_RADARERR_5211)
524                 len += snprintf(buf+len, sizeof(buf)-len, " RADARERR-5211");
525
526         len += snprintf(buf+len, sizeof(buf)-len, "\nopmode: %s (%d)\n",
527                         ath_opmode_to_string(sc->opmode), sc->opmode);
528
529         if (len > sizeof(buf))
530                 len = sizeof(buf);
531
532         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
533 }
534
535 static const struct file_operations fops_misc = {
536         .read = read_file_misc,
537         .open = ath5k_debugfs_open,
538         .owner = THIS_MODULE,
539 };
540
541
542 /* debugfs: frameerrors */
543
544 static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
545                                    size_t count, loff_t *ppos)
546 {
547         struct ath5k_softc *sc = file->private_data;
548         struct ath5k_statistics *st = &sc->stats;
549         char buf[700];
550         unsigned int len = 0;
551         int i;
552
553         len += snprintf(buf+len, sizeof(buf)-len,
554                         "RX\n---------------------\n");
555         len += snprintf(buf+len, sizeof(buf)-len, "CRC\t%u\t(%u%%)\n",
556                         st->rxerr_crc,
557                         st->rx_all_count > 0 ?
558                                 st->rxerr_crc*100/st->rx_all_count : 0);
559         len += snprintf(buf+len, sizeof(buf)-len, "PHY\t%u\t(%u%%)\n",
560                         st->rxerr_phy,
561                         st->rx_all_count > 0 ?
562                                 st->rxerr_phy*100/st->rx_all_count : 0);
563         for (i = 0; i < 32; i++) {
564                 if (st->rxerr_phy_code[i])
565                         len += snprintf(buf+len, sizeof(buf)-len,
566                                 " phy_err[%u]\t%u\n",
567                                 i, st->rxerr_phy_code[i]);
568         }
569
570         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%u\t(%u%%)\n",
571                         st->rxerr_fifo,
572                         st->rx_all_count > 0 ?
573                                 st->rxerr_fifo*100/st->rx_all_count : 0);
574         len += snprintf(buf+len, sizeof(buf)-len, "decrypt\t%u\t(%u%%)\n",
575                         st->rxerr_decrypt,
576                         st->rx_all_count > 0 ?
577                                 st->rxerr_decrypt*100/st->rx_all_count : 0);
578         len += snprintf(buf+len, sizeof(buf)-len, "MIC\t%u\t(%u%%)\n",
579                         st->rxerr_mic,
580                         st->rx_all_count > 0 ?
581                                 st->rxerr_mic*100/st->rx_all_count : 0);
582         len += snprintf(buf+len, sizeof(buf)-len, "process\t%u\t(%u%%)\n",
583                         st->rxerr_proc,
584                         st->rx_all_count > 0 ?
585                                 st->rxerr_proc*100/st->rx_all_count : 0);
586         len += snprintf(buf+len, sizeof(buf)-len, "jumbo\t%u\t(%u%%)\n",
587                         st->rxerr_jumbo,
588                         st->rx_all_count > 0 ?
589                                 st->rxerr_jumbo*100/st->rx_all_count : 0);
590         len += snprintf(buf+len, sizeof(buf)-len, "[RX all\t%u]\n",
591                         st->rx_all_count);
592         len += snprintf(buf+len, sizeof(buf)-len, "RX-all-bytes\t%u\n",
593                         st->rx_bytes_count);
594
595         len += snprintf(buf+len, sizeof(buf)-len,
596                         "\nTX\n---------------------\n");
597         len += snprintf(buf+len, sizeof(buf)-len, "retry\t%u\t(%u%%)\n",
598                         st->txerr_retry,
599                         st->tx_all_count > 0 ?
600                                 st->txerr_retry*100/st->tx_all_count : 0);
601         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%u\t(%u%%)\n",
602                         st->txerr_fifo,
603                         st->tx_all_count > 0 ?
604                                 st->txerr_fifo*100/st->tx_all_count : 0);
605         len += snprintf(buf+len, sizeof(buf)-len, "filter\t%u\t(%u%%)\n",
606                         st->txerr_filt,
607                         st->tx_all_count > 0 ?
608                                 st->txerr_filt*100/st->tx_all_count : 0);
609         len += snprintf(buf+len, sizeof(buf)-len, "[TX all\t%u]\n",
610                         st->tx_all_count);
611         len += snprintf(buf+len, sizeof(buf)-len, "TX-all-bytes\t%u\n",
612                         st->tx_bytes_count);
613
614         if (len > sizeof(buf))
615                 len = sizeof(buf);
616
617         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
618 }
619
620 static ssize_t write_file_frameerrors(struct file *file,
621                                  const char __user *userbuf,
622                                  size_t count, loff_t *ppos)
623 {
624         struct ath5k_softc *sc = file->private_data;
625         struct ath5k_statistics *st = &sc->stats;
626         char buf[20];
627
628         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
629                 return -EFAULT;
630
631         if (strncmp(buf, "clear", 5) == 0) {
632                 st->rxerr_crc = 0;
633                 st->rxerr_phy = 0;
634                 st->rxerr_fifo = 0;
635                 st->rxerr_decrypt = 0;
636                 st->rxerr_mic = 0;
637                 st->rxerr_proc = 0;
638                 st->rxerr_jumbo = 0;
639                 st->rx_all_count = 0;
640                 st->txerr_retry = 0;
641                 st->txerr_fifo = 0;
642                 st->txerr_filt = 0;
643                 st->tx_all_count = 0;
644                 printk(KERN_INFO "ath5k debug: cleared frameerrors stats\n");
645         }
646         return count;
647 }
648
649 static const struct file_operations fops_frameerrors = {
650         .read = read_file_frameerrors,
651         .write = write_file_frameerrors,
652         .open = ath5k_debugfs_open,
653         .owner = THIS_MODULE,
654         .llseek = default_llseek,
655 };
656
657
658 /* debugfs: ani */
659
660 static ssize_t read_file_ani(struct file *file, char __user *user_buf,
661                                    size_t count, loff_t *ppos)
662 {
663         struct ath5k_softc *sc = file->private_data;
664         struct ath5k_statistics *st = &sc->stats;
665         struct ath5k_ani_state *as = &sc->ani_state;
666
667         char buf[700];
668         unsigned int len = 0;
669
670         len += snprintf(buf+len, sizeof(buf)-len,
671                         "HW has PHY error counters:\t%s\n",
672                         sc->ah->ah_capabilities.cap_has_phyerr_counters ?
673                         "yes" : "no");
674         len += snprintf(buf+len, sizeof(buf)-len,
675                         "HW max spur immunity level:\t%d\n",
676                         as->max_spur_level);
677         len += snprintf(buf+len, sizeof(buf)-len,
678                 "\nANI state\n--------------------------------------------\n");
679         len += snprintf(buf+len, sizeof(buf)-len, "operating mode:\t\t\t");
680         switch (as->ani_mode) {
681         case ATH5K_ANI_MODE_OFF:
682                 len += snprintf(buf+len, sizeof(buf)-len, "OFF\n");
683                 break;
684         case ATH5K_ANI_MODE_MANUAL_LOW:
685                 len += snprintf(buf+len, sizeof(buf)-len,
686                         "MANUAL LOW\n");
687                 break;
688         case ATH5K_ANI_MODE_MANUAL_HIGH:
689                 len += snprintf(buf+len, sizeof(buf)-len,
690                         "MANUAL HIGH\n");
691                 break;
692         case ATH5K_ANI_MODE_AUTO:
693                 len += snprintf(buf+len, sizeof(buf)-len, "AUTO\n");
694                 break;
695         default:
696                 len += snprintf(buf+len, sizeof(buf)-len,
697                         "??? (not good)\n");
698                 break;
699         }
700         len += snprintf(buf+len, sizeof(buf)-len,
701                         "noise immunity level:\t\t%d\n",
702                         as->noise_imm_level);
703         len += snprintf(buf+len, sizeof(buf)-len,
704                         "spur immunity level:\t\t%d\n",
705                         as->spur_level);
706         len += snprintf(buf+len, sizeof(buf)-len, "firstep level:\t\t\t%d\n",
707                         as->firstep_level);
708         len += snprintf(buf+len, sizeof(buf)-len,
709                         "OFDM weak signal detection:\t%s\n",
710                         as->ofdm_weak_sig ? "on" : "off");
711         len += snprintf(buf+len, sizeof(buf)-len,
712                         "CCK weak signal detection:\t%s\n",
713                         as->cck_weak_sig ? "on" : "off");
714
715         len += snprintf(buf+len, sizeof(buf)-len,
716                         "\nMIB INTERRUPTS:\t\t%u\n",
717                         st->mib_intr);
718         len += snprintf(buf+len, sizeof(buf)-len,
719                         "beacon RSSI average:\t%d\n",
720                         (int)ewma_read(&sc->ah->ah_beacon_rssi_avg));
721
722 #define CC_PRINT(_struct, _field) \
723         _struct._field, \
724         _struct.cycles > 0 ? \
725         _struct._field*100/_struct.cycles : 0
726
727         len += snprintf(buf+len, sizeof(buf)-len, "profcnt tx\t\t%u\t(%d%%)\n",
728                         CC_PRINT(as->last_cc, tx_frame));
729         len += snprintf(buf+len, sizeof(buf)-len, "profcnt rx\t\t%u\t(%d%%)\n",
730                         CC_PRINT(as->last_cc, rx_frame));
731         len += snprintf(buf+len, sizeof(buf)-len, "profcnt busy\t\t%u\t(%d%%)\n",
732                         CC_PRINT(as->last_cc, rx_busy));
733 #undef CC_PRINT
734         len += snprintf(buf+len, sizeof(buf)-len, "profcnt cycles\t\t%u\n",
735                         as->last_cc.cycles);
736         len += snprintf(buf+len, sizeof(buf)-len,
737                         "listen time\t\t%d\tlast: %d\n",
738                         as->listen_time, as->last_listen);
739         len += snprintf(buf+len, sizeof(buf)-len,
740                         "OFDM errors\t\t%u\tlast: %u\tsum: %u\n",
741                         as->ofdm_errors, as->last_ofdm_errors,
742                         as->sum_ofdm_errors);
743         len += snprintf(buf+len, sizeof(buf)-len,
744                         "CCK errors\t\t%u\tlast: %u\tsum: %u\n",
745                         as->cck_errors, as->last_cck_errors,
746                         as->sum_cck_errors);
747         len += snprintf(buf+len, sizeof(buf)-len,
748                         "AR5K_PHYERR_CNT1\t%x\t(=%d)\n",
749                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT1),
750                         ATH5K_ANI_OFDM_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
751                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT1)));
752         len += snprintf(buf+len, sizeof(buf)-len,
753                         "AR5K_PHYERR_CNT2\t%x\t(=%d)\n",
754                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT2),
755                         ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
756                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT2)));
757
758         if (len > sizeof(buf))
759                 len = sizeof(buf);
760
761         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
762 }
763
764 static ssize_t write_file_ani(struct file *file,
765                                  const char __user *userbuf,
766                                  size_t count, loff_t *ppos)
767 {
768         struct ath5k_softc *sc = file->private_data;
769         char buf[20];
770
771         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
772                 return -EFAULT;
773
774         if (strncmp(buf, "sens-low", 8) == 0) {
775                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_MANUAL_HIGH);
776         } else if (strncmp(buf, "sens-high", 9) == 0) {
777                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_MANUAL_LOW);
778         } else if (strncmp(buf, "ani-off", 7) == 0) {
779                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_OFF);
780         } else if (strncmp(buf, "ani-on", 6) == 0) {
781                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_AUTO);
782         } else if (strncmp(buf, "noise-low", 9) == 0) {
783                 ath5k_ani_set_noise_immunity_level(sc->ah, 0);
784         } else if (strncmp(buf, "noise-high", 10) == 0) {
785                 ath5k_ani_set_noise_immunity_level(sc->ah,
786                                                    ATH5K_ANI_MAX_NOISE_IMM_LVL);
787         } else if (strncmp(buf, "spur-low", 8) == 0) {
788                 ath5k_ani_set_spur_immunity_level(sc->ah, 0);
789         } else if (strncmp(buf, "spur-high", 9) == 0) {
790                 ath5k_ani_set_spur_immunity_level(sc->ah,
791                                                   sc->ani_state.max_spur_level);
792         } else if (strncmp(buf, "fir-low", 7) == 0) {
793                 ath5k_ani_set_firstep_level(sc->ah, 0);
794         } else if (strncmp(buf, "fir-high", 8) == 0) {
795                 ath5k_ani_set_firstep_level(sc->ah, ATH5K_ANI_MAX_FIRSTEP_LVL);
796         } else if (strncmp(buf, "ofdm-off", 8) == 0) {
797                 ath5k_ani_set_ofdm_weak_signal_detection(sc->ah, false);
798         } else if (strncmp(buf, "ofdm-on", 7) == 0) {
799                 ath5k_ani_set_ofdm_weak_signal_detection(sc->ah, true);
800         } else if (strncmp(buf, "cck-off", 7) == 0) {
801                 ath5k_ani_set_cck_weak_signal_detection(sc->ah, false);
802         } else if (strncmp(buf, "cck-on", 6) == 0) {
803                 ath5k_ani_set_cck_weak_signal_detection(sc->ah, true);
804         }
805         return count;
806 }
807
808 static const struct file_operations fops_ani = {
809         .read = read_file_ani,
810         .write = write_file_ani,
811         .open = ath5k_debugfs_open,
812         .owner = THIS_MODULE,
813         .llseek = default_llseek,
814 };
815
816
817 /* debugfs: queues etc */
818
819 static ssize_t read_file_queue(struct file *file, char __user *user_buf,
820                                    size_t count, loff_t *ppos)
821 {
822         struct ath5k_softc *sc = file->private_data;
823         char buf[700];
824         unsigned int len = 0;
825
826         struct ath5k_txq *txq;
827         struct ath5k_buf *bf, *bf0;
828         int i, n;
829
830         len += snprintf(buf+len, sizeof(buf)-len,
831                         "available txbuffers: %d\n", sc->txbuf_len);
832
833         for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) {
834                 txq = &sc->txqs[i];
835
836                 len += snprintf(buf+len, sizeof(buf)-len,
837                         "%02d: %ssetup\n", i, txq->setup ? "" : "not ");
838
839                 if (!txq->setup)
840                         continue;
841
842                 n = 0;
843                 spin_lock_bh(&txq->lock);
844                 list_for_each_entry_safe(bf, bf0, &txq->q, list)
845                         n++;
846                 spin_unlock_bh(&txq->lock);
847
848                 len += snprintf(buf+len, sizeof(buf)-len,
849                                 "  len: %d bufs: %d\n", txq->txq_len, n);
850                 len += snprintf(buf+len, sizeof(buf)-len,
851                                 "  stuck: %d\n", txq->txq_stuck);
852         }
853
854         if (len > sizeof(buf))
855                 len = sizeof(buf);
856
857         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
858 }
859
860 static ssize_t write_file_queue(struct file *file,
861                                  const char __user *userbuf,
862                                  size_t count, loff_t *ppos)
863 {
864         struct ath5k_softc *sc = file->private_data;
865         char buf[20];
866
867         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
868                 return -EFAULT;
869
870         if (strncmp(buf, "start", 5) == 0)
871                 ieee80211_wake_queues(sc->hw);
872         else if (strncmp(buf, "stop", 4) == 0)
873                 ieee80211_stop_queues(sc->hw);
874
875         return count;
876 }
877
878
879 static const struct file_operations fops_queue = {
880         .read = read_file_queue,
881         .write = write_file_queue,
882         .open = ath5k_debugfs_open,
883         .owner = THIS_MODULE,
884         .llseek = default_llseek,
885 };
886
887
888 void
889 ath5k_debug_init_device(struct ath5k_softc *sc)
890 {
891         struct dentry *phydir;
892
893         sc->debug.level = ath5k_debug;
894
895         phydir = debugfs_create_dir("ath5k", sc->hw->wiphy->debugfsdir);
896         if (!phydir)
897             return;
898
899         debugfs_create_file("debug", S_IWUSR | S_IRUSR, phydir, sc,
900                             &fops_debug);
901
902         debugfs_create_file("registers", S_IRUSR, phydir, sc, &fops_registers);
903
904         debugfs_create_file("beacon", S_IWUSR | S_IRUSR, phydir, sc,
905                             &fops_beacon);
906
907         debugfs_create_file("reset", S_IWUSR, phydir, sc, &fops_reset);
908
909         debugfs_create_file("antenna", S_IWUSR | S_IRUSR, phydir, sc,
910                             &fops_antenna);
911
912         debugfs_create_file("misc", S_IRUSR, phydir, sc, &fops_misc);
913
914         debugfs_create_file("frameerrors", S_IWUSR | S_IRUSR, phydir, sc,
915                             &fops_frameerrors);
916
917         debugfs_create_file("ani", S_IWUSR | S_IRUSR, phydir, sc, &fops_ani);
918
919         debugfs_create_file("queue", S_IWUSR | S_IRUSR, phydir, sc,
920                             &fops_queue);
921 }
922
923 /* functions used in other places */
924
925 void
926 ath5k_debug_dump_bands(struct ath5k_softc *sc)
927 {
928         unsigned int b, i;
929
930         if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPBANDS)))
931                 return;
932
933         BUG_ON(!sc->sbands);
934
935         for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
936                 struct ieee80211_supported_band *band = &sc->sbands[b];
937                 char bname[6];
938                 switch (band->band) {
939                 case IEEE80211_BAND_2GHZ:
940                         strcpy(bname, "2 GHz");
941                         break;
942                 case IEEE80211_BAND_5GHZ:
943                         strcpy(bname, "5 GHz");
944                         break;
945                 default:
946                         printk(KERN_DEBUG "Band not supported: %d\n",
947                                 band->band);
948                         return;
949                 }
950                 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
951                                 band->n_channels, band->n_bitrates);
952                 printk(KERN_DEBUG " channels:\n");
953                 for (i = 0; i < band->n_channels; i++)
954                         printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
955                                         ieee80211_frequency_to_channel(
956                                                 band->channels[i].center_freq),
957                                         band->channels[i].center_freq,
958                                         band->channels[i].hw_value,
959                                         band->channels[i].flags);
960                 printk(KERN_DEBUG " rates:\n");
961                 for (i = 0; i < band->n_bitrates; i++)
962                         printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
963                                         band->bitrates[i].bitrate,
964                                         band->bitrates[i].hw_value,
965                                         band->bitrates[i].flags,
966                                         band->bitrates[i].hw_value_short);
967         }
968 }
969
970 static inline void
971 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
972                        struct ath5k_rx_status *rs)
973 {
974         struct ath5k_desc *ds = bf->desc;
975         struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
976
977         printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
978                 ds, (unsigned long long)bf->daddr,
979                 ds->ds_link, ds->ds_data,
980                 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
981                 rd->rx_stat.rx_status_0, rd->rx_stat.rx_status_1,
982                 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
983 }
984
985 void
986 ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah)
987 {
988         struct ath5k_desc *ds;
989         struct ath5k_buf *bf;
990         struct ath5k_rx_status rs = {};
991         int status;
992
993         if (likely(!(sc->debug.level & ATH5K_DEBUG_DESC)))
994                 return;
995
996         printk(KERN_DEBUG "rxdp %x, rxlink %p\n",
997                 ath5k_hw_get_rxdp(ah), sc->rxlink);
998
999         spin_lock_bh(&sc->rxbuflock);
1000         list_for_each_entry(bf, &sc->rxbuf, list) {
1001                 ds = bf->desc;
1002                 status = ah->ah_proc_rx_desc(ah, ds, &rs);
1003                 if (!status)
1004                         ath5k_debug_printrxbuf(bf, status == 0, &rs);
1005         }
1006         spin_unlock_bh(&sc->rxbuflock);
1007 }
1008
1009 void
1010 ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf)
1011 {
1012         struct ath5k_desc *ds = bf->desc;
1013         struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
1014         struct ath5k_tx_status ts = {};
1015         int done;
1016
1017         if (likely(!(sc->debug.level & ATH5K_DEBUG_DESC)))
1018                 return;
1019
1020         done = sc->ah->ah_proc_tx_desc(sc->ah, bf->desc, &ts);
1021
1022         printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
1023                 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
1024                 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
1025                 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
1026                 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
1027                 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
1028 }
1029
1030 #endif /* ifdef CONFIG_ATH5K_DEBUG */