8c5ce8b0c7346873a64c6ee9e8f358a2d5a565c6
[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 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_hw *ah = seq->private;
161         struct reg *r = p;
162         seq_printf(seq, "%-25s0x%08x\n", r->name,
163                 ath5k_hw_reg_read(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_hw *ah = file->private_data;
201         char buf[500];
202         unsigned int len = 0;
203         unsigned int v;
204         u64 tsf;
205
206         v = ath5k_hw_reg_read(ah, AR5K_BEACON);
207         len += snprintf(buf + len, sizeof(buf) - len,
208                 "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
209                 "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
210                 (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
211
212         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n",
213                 "AR5K_LAST_TSTP", ath5k_hw_reg_read(ah, AR5K_LAST_TSTP));
214
215         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\n\n",
216                 "AR5K_BEACON_CNT", ath5k_hw_reg_read(ah, AR5K_BEACON_CNT));
217
218         v = ath5k_hw_reg_read(ah, AR5K_TIMER0);
219         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
220                 "AR5K_TIMER0 (TBTT)", v, v);
221
222         v = ath5k_hw_reg_read(ah, AR5K_TIMER1);
223         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
224                 "AR5K_TIMER1 (DMA)", v, v >> 3);
225
226         v = ath5k_hw_reg_read(ah, AR5K_TIMER2);
227         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
228                 "AR5K_TIMER2 (SWBA)", v, v >> 3);
229
230         v = ath5k_hw_reg_read(ah, AR5K_TIMER3);
231         len += snprintf(buf + len, sizeof(buf) - len, "%-24s0x%08x\tTU: %08x\n",
232                 "AR5K_TIMER3 (ATIM)", v, v);
233
234         tsf = ath5k_hw_get_tsf64(ah);
235         len += snprintf(buf + len, sizeof(buf) - len,
236                 "TSF\t\t0x%016llx\tTU: %08x\n",
237                 (unsigned long long)tsf, TSF_TO_TU(tsf));
238
239         if (len > sizeof(buf))
240                 len = sizeof(buf);
241
242         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
243 }
244
245 static ssize_t write_file_beacon(struct file *file,
246                                  const char __user *userbuf,
247                                  size_t count, loff_t *ppos)
248 {
249         struct ath5k_hw *ah = file->private_data;
250         char buf[20];
251
252         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
253                 return -EFAULT;
254
255         if (strncmp(buf, "disable", 7) == 0) {
256                 AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
257                 printk(KERN_INFO "debugfs disable beacons\n");
258         } else if (strncmp(buf, "enable", 6) == 0) {
259                 AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
260                 printk(KERN_INFO "debugfs enable beacons\n");
261         }
262         return count;
263 }
264
265 static const struct file_operations fops_beacon = {
266         .read = read_file_beacon,
267         .write = write_file_beacon,
268         .open = ath5k_debugfs_open,
269         .owner = THIS_MODULE,
270         .llseek = default_llseek,
271 };
272
273
274 /* debugfs: reset */
275
276 static ssize_t write_file_reset(struct file *file,
277                                  const char __user *userbuf,
278                                  size_t count, loff_t *ppos)
279 {
280         struct ath5k_hw *ah = file->private_data;
281         ATH5K_DBG(ah, ATH5K_DEBUG_RESET, "debug file triggered reset\n");
282         ieee80211_queue_work(ah->hw, &ah->reset_work);
283         return count;
284 }
285
286 static const struct file_operations fops_reset = {
287         .write = write_file_reset,
288         .open = ath5k_debugfs_open,
289         .owner = THIS_MODULE,
290         .llseek = noop_llseek,
291 };
292
293
294 /* debugfs: debug level */
295
296 static const struct {
297         enum ath5k_debug_level level;
298         const char *name;
299         const char *desc;
300 } dbg_info[] = {
301         { ATH5K_DEBUG_RESET,    "reset",        "reset and initialization" },
302         { ATH5K_DEBUG_INTR,     "intr",         "interrupt handling" },
303         { ATH5K_DEBUG_MODE,     "mode",         "mode init/setup" },
304         { ATH5K_DEBUG_XMIT,     "xmit",         "basic xmit operation" },
305         { ATH5K_DEBUG_BEACON,   "beacon",       "beacon handling" },
306         { ATH5K_DEBUG_CALIBRATE, "calib",       "periodic calibration" },
307         { ATH5K_DEBUG_TXPOWER,  "txpower",      "transmit power setting" },
308         { ATH5K_DEBUG_LED,      "led",          "LED management" },
309         { ATH5K_DEBUG_DUMPBANDS, "dumpbands",   "dump bands" },
310         { ATH5K_DEBUG_DMA,      "dma",          "dma start/stop" },
311         { ATH5K_DEBUG_ANI,      "ani",          "adaptive noise immunity" },
312         { ATH5K_DEBUG_DESC,     "desc",         "descriptor chains" },
313         { ATH5K_DEBUG_ANY,      "all",          "show all debug levels" },
314 };
315
316 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
317                                    size_t count, loff_t *ppos)
318 {
319         struct ath5k_hw *ah = file->private_data;
320         char buf[700];
321         unsigned int len = 0;
322         unsigned int i;
323
324         len += snprintf(buf + len, sizeof(buf) - len,
325                 "DEBUG LEVEL: 0x%08x\n\n", ah->debug.level);
326
327         for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
328                 len += snprintf(buf + len, sizeof(buf) - len,
329                         "%10s %c 0x%08x - %s\n", dbg_info[i].name,
330                         ah->debug.level & dbg_info[i].level ? '+' : ' ',
331                         dbg_info[i].level, dbg_info[i].desc);
332         }
333         len += snprintf(buf + len, sizeof(buf) - len,
334                 "%10s %c 0x%08x - %s\n", dbg_info[i].name,
335                 ah->debug.level == dbg_info[i].level ? '+' : ' ',
336                 dbg_info[i].level, dbg_info[i].desc);
337
338         if (len > sizeof(buf))
339                 len = sizeof(buf);
340
341         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
342 }
343
344 static ssize_t write_file_debug(struct file *file,
345                                  const char __user *userbuf,
346                                  size_t count, loff_t *ppos)
347 {
348         struct ath5k_hw *ah = file->private_data;
349         unsigned int i;
350         char buf[20];
351
352         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
353                 return -EFAULT;
354
355         for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
356                 if (strncmp(buf, dbg_info[i].name,
357                                         strlen(dbg_info[i].name)) == 0) {
358                         ah->debug.level ^= dbg_info[i].level; /* toggle bit */
359                         break;
360                 }
361         }
362         return count;
363 }
364
365 static const struct file_operations fops_debug = {
366         .read = read_file_debug,
367         .write = write_file_debug,
368         .open = ath5k_debugfs_open,
369         .owner = THIS_MODULE,
370         .llseek = default_llseek,
371 };
372
373
374 /* debugfs: antenna */
375
376 static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
377                                    size_t count, loff_t *ppos)
378 {
379         struct ath5k_hw *ah = file->private_data;
380         char buf[700];
381         unsigned int len = 0;
382         unsigned int i;
383         unsigned int v;
384
385         len += snprintf(buf + len, sizeof(buf) - len, "antenna mode\t%d\n",
386                 ah->ah_ant_mode);
387         len += snprintf(buf + len, sizeof(buf) - len, "default antenna\t%d\n",
388                 ah->ah_def_ant);
389         len += snprintf(buf + len, sizeof(buf) - len, "tx antenna\t%d\n",
390                 ah->ah_tx_ant);
391
392         len += snprintf(buf + len, sizeof(buf) - len, "\nANTENNA\t\tRX\tTX\n");
393         for (i = 1; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) {
394                 len += snprintf(buf + len, sizeof(buf) - len,
395                         "[antenna %d]\t%d\t%d\n",
396                         i, ah->stats.antenna_rx[i], ah->stats.antenna_tx[i]);
397         }
398         len += snprintf(buf + len, sizeof(buf) - len, "[invalid]\t%d\t%d\n",
399                         ah->stats.antenna_rx[0], ah->stats.antenna_tx[0]);
400
401         v = ath5k_hw_reg_read(ah, AR5K_DEFAULT_ANTENNA);
402         len += snprintf(buf + len, sizeof(buf) - len,
403                         "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
404
405         v = ath5k_hw_reg_read(ah, AR5K_STA_ID1);
406         len += snprintf(buf + len, sizeof(buf) - len,
407                 "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
408                 (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
409         len += snprintf(buf + len, sizeof(buf) - len,
410                 "AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
411                 (v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
412         len += snprintf(buf + len, sizeof(buf) - len,
413                 "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
414                 (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
415         len += snprintf(buf + len, sizeof(buf) - len,
416                 "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
417                 (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
418
419         v = ath5k_hw_reg_read(ah, AR5K_PHY_AGCCTL);
420         len += snprintf(buf + len, sizeof(buf) - len,
421                 "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
422                 (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
423
424         v = ath5k_hw_reg_read(ah, AR5K_PHY_RESTART);
425         len += snprintf(buf + len, sizeof(buf) - len,
426                 "AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
427                 (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
428
429         v = ath5k_hw_reg_read(ah, AR5K_PHY_FAST_ANT_DIV);
430         len += snprintf(buf + len, sizeof(buf) - len,
431                 "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
432                 (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
433
434         v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_0);
435         len += snprintf(buf + len, sizeof(buf) - len,
436                         "\nAR5K_PHY_ANT_SWITCH_TABLE_0\t0x%08x\n", v);
437         v = ath5k_hw_reg_read(ah, AR5K_PHY_ANT_SWITCH_TABLE_1);
438         len += snprintf(buf + len, sizeof(buf) - len,
439                         "AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v);
440
441         if (len > sizeof(buf))
442                 len = sizeof(buf);
443
444         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
445 }
446
447 static ssize_t write_file_antenna(struct file *file,
448                                  const char __user *userbuf,
449                                  size_t count, loff_t *ppos)
450 {
451         struct ath5k_hw *ah = file->private_data;
452         unsigned int i;
453         char buf[20];
454
455         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
456                 return -EFAULT;
457
458         if (strncmp(buf, "diversity", 9) == 0) {
459                 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT);
460                 printk(KERN_INFO "ath5k debug: enable diversity\n");
461         } else if (strncmp(buf, "fixed-a", 7) == 0) {
462                 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A);
463                 printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
464         } else if (strncmp(buf, "fixed-b", 7) == 0) {
465                 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B);
466                 printk(KERN_INFO "ath5k debug: fixed antenna B\n");
467         } else if (strncmp(buf, "clear", 5) == 0) {
468                 for (i = 0; i < ARRAY_SIZE(ah->stats.antenna_rx); i++) {
469                         ah->stats.antenna_rx[i] = 0;
470                         ah->stats.antenna_tx[i] = 0;
471                 }
472                 printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
473         }
474         return count;
475 }
476
477 static const struct file_operations fops_antenna = {
478         .read = read_file_antenna,
479         .write = write_file_antenna,
480         .open = ath5k_debugfs_open,
481         .owner = THIS_MODULE,
482         .llseek = default_llseek,
483 };
484
485 /* debugfs: misc */
486
487 static ssize_t read_file_misc(struct file *file, char __user *user_buf,
488                                    size_t count, loff_t *ppos)
489 {
490         struct ath5k_hw *ah = file->private_data;
491         char buf[700];
492         unsigned int len = 0;
493         u32 filt = ath5k_hw_get_rx_filter(ah);
494
495         len += snprintf(buf + len, sizeof(buf) - len, "bssid-mask: %pM\n",
496                         ah->bssidmask);
497         len += snprintf(buf + len, sizeof(buf) - len, "filter-flags: 0x%x ",
498                         filt);
499         if (filt & AR5K_RX_FILTER_UCAST)
500                 len += snprintf(buf + len, sizeof(buf) - len, " UCAST");
501         if (filt & AR5K_RX_FILTER_MCAST)
502                 len += snprintf(buf + len, sizeof(buf) - len, " MCAST");
503         if (filt & AR5K_RX_FILTER_BCAST)
504                 len += snprintf(buf + len, sizeof(buf) - len, " BCAST");
505         if (filt & AR5K_RX_FILTER_CONTROL)
506                 len += snprintf(buf + len, sizeof(buf) - len, " CONTROL");
507         if (filt & AR5K_RX_FILTER_BEACON)
508                 len += snprintf(buf + len, sizeof(buf) - len, " BEACON");
509         if (filt & AR5K_RX_FILTER_PROM)
510                 len += snprintf(buf + len, sizeof(buf) - len, " PROM");
511         if (filt & AR5K_RX_FILTER_XRPOLL)
512                 len += snprintf(buf + len, sizeof(buf) - len, " XRPOLL");
513         if (filt & AR5K_RX_FILTER_PROBEREQ)
514                 len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ");
515         if (filt & AR5K_RX_FILTER_PHYERR_5212)
516                 len += snprintf(buf + len, sizeof(buf) - len, " PHYERR-5212");
517         if (filt & AR5K_RX_FILTER_RADARERR_5212)
518                 len += snprintf(buf + len, sizeof(buf) - len, " RADARERR-5212");
519         if (filt & AR5K_RX_FILTER_PHYERR_5211)
520                 snprintf(buf + len, sizeof(buf) - len, " PHYERR-5211");
521         if (filt & AR5K_RX_FILTER_RADARERR_5211)
522                 len += snprintf(buf + len, sizeof(buf) - len, " RADARERR-5211");
523
524         len += snprintf(buf + len, sizeof(buf) - len, "\nopmode: %s (%d)\n",
525                         ath_opmode_to_string(ah->opmode), ah->opmode);
526
527         if (len > sizeof(buf))
528                 len = sizeof(buf);
529
530         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
531 }
532
533 static const struct file_operations fops_misc = {
534         .read = read_file_misc,
535         .open = ath5k_debugfs_open,
536         .owner = THIS_MODULE,
537 };
538
539
540 /* debugfs: frameerrors */
541
542 static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
543                                    size_t count, loff_t *ppos)
544 {
545         struct ath5k_hw *ah = file->private_data;
546         struct ath5k_statistics *st = &ah->stats;
547         char buf[700];
548         unsigned int len = 0;
549         int i;
550
551         len += snprintf(buf + len, sizeof(buf) - len,
552                         "RX\n---------------------\n");
553         len += snprintf(buf + len, sizeof(buf) - len, "CRC\t%u\t(%u%%)\n",
554                         st->rxerr_crc,
555                         st->rx_all_count > 0 ?
556                                 st->rxerr_crc * 100 / st->rx_all_count : 0);
557         len += snprintf(buf + len, sizeof(buf) - len, "PHY\t%u\t(%u%%)\n",
558                         st->rxerr_phy,
559                         st->rx_all_count > 0 ?
560                                 st->rxerr_phy * 100 / st->rx_all_count : 0);
561         for (i = 0; i < 32; i++) {
562                 if (st->rxerr_phy_code[i])
563                         len += snprintf(buf + len, sizeof(buf) - len,
564                                 " phy_err[%u]\t%u\n",
565                                 i, st->rxerr_phy_code[i]);
566         }
567
568         len += snprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n",
569                         st->rxerr_fifo,
570                         st->rx_all_count > 0 ?
571                                 st->rxerr_fifo * 100 / st->rx_all_count : 0);
572         len += snprintf(buf + len, sizeof(buf) - len, "decrypt\t%u\t(%u%%)\n",
573                         st->rxerr_decrypt,
574                         st->rx_all_count > 0 ?
575                                 st->rxerr_decrypt * 100 / st->rx_all_count : 0);
576         len += snprintf(buf + len, sizeof(buf) - len, "MIC\t%u\t(%u%%)\n",
577                         st->rxerr_mic,
578                         st->rx_all_count > 0 ?
579                                 st->rxerr_mic * 100 / st->rx_all_count : 0);
580         len += snprintf(buf + len, sizeof(buf) - len, "process\t%u\t(%u%%)\n",
581                         st->rxerr_proc,
582                         st->rx_all_count > 0 ?
583                                 st->rxerr_proc * 100 / st->rx_all_count : 0);
584         len += snprintf(buf + len, sizeof(buf) - len, "jumbo\t%u\t(%u%%)\n",
585                         st->rxerr_jumbo,
586                         st->rx_all_count > 0 ?
587                                 st->rxerr_jumbo * 100 / st->rx_all_count : 0);
588         len += snprintf(buf + len, sizeof(buf) - len, "[RX all\t%u]\n",
589                         st->rx_all_count);
590         len += snprintf(buf + len, sizeof(buf) - len, "RX-all-bytes\t%u\n",
591                         st->rx_bytes_count);
592
593         len += snprintf(buf + len, sizeof(buf) - len,
594                         "\nTX\n---------------------\n");
595         len += snprintf(buf + len, sizeof(buf) - len, "retry\t%u\t(%u%%)\n",
596                         st->txerr_retry,
597                         st->tx_all_count > 0 ?
598                                 st->txerr_retry * 100 / st->tx_all_count : 0);
599         len += snprintf(buf + len, sizeof(buf) - len, "FIFO\t%u\t(%u%%)\n",
600                         st->txerr_fifo,
601                         st->tx_all_count > 0 ?
602                                 st->txerr_fifo * 100 / st->tx_all_count : 0);
603         len += snprintf(buf + len, sizeof(buf) - len, "filter\t%u\t(%u%%)\n",
604                         st->txerr_filt,
605                         st->tx_all_count > 0 ?
606                                 st->txerr_filt * 100 / st->tx_all_count : 0);
607         len += snprintf(buf + len, sizeof(buf) - len, "[TX all\t%u]\n",
608                         st->tx_all_count);
609         len += snprintf(buf + len, sizeof(buf) - len, "TX-all-bytes\t%u\n",
610                         st->tx_bytes_count);
611
612         if (len > sizeof(buf))
613                 len = sizeof(buf);
614
615         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
616 }
617
618 static ssize_t write_file_frameerrors(struct file *file,
619                                  const char __user *userbuf,
620                                  size_t count, loff_t *ppos)
621 {
622         struct ath5k_hw *ah = file->private_data;
623         struct ath5k_statistics *st = &ah->stats;
624         char buf[20];
625
626         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
627                 return -EFAULT;
628
629         if (strncmp(buf, "clear", 5) == 0) {
630                 st->rxerr_crc = 0;
631                 st->rxerr_phy = 0;
632                 st->rxerr_fifo = 0;
633                 st->rxerr_decrypt = 0;
634                 st->rxerr_mic = 0;
635                 st->rxerr_proc = 0;
636                 st->rxerr_jumbo = 0;
637                 st->rx_all_count = 0;
638                 st->txerr_retry = 0;
639                 st->txerr_fifo = 0;
640                 st->txerr_filt = 0;
641                 st->tx_all_count = 0;
642                 printk(KERN_INFO "ath5k debug: cleared frameerrors stats\n");
643         }
644         return count;
645 }
646
647 static const struct file_operations fops_frameerrors = {
648         .read = read_file_frameerrors,
649         .write = write_file_frameerrors,
650         .open = ath5k_debugfs_open,
651         .owner = THIS_MODULE,
652         .llseek = default_llseek,
653 };
654
655
656 /* debugfs: ani */
657
658 static ssize_t read_file_ani(struct file *file, char __user *user_buf,
659                                    size_t count, loff_t *ppos)
660 {
661         struct ath5k_hw *ah = file->private_data;
662         struct ath5k_statistics *st = &ah->stats;
663         struct ath5k_ani_state *as = &ah->ani_state;
664
665         char buf[700];
666         unsigned int len = 0;
667
668         len += snprintf(buf + len, sizeof(buf) - len,
669                         "HW has PHY error counters:\t%s\n",
670                         ah->ah_capabilities.cap_has_phyerr_counters ?
671                         "yes" : "no");
672         len += snprintf(buf + len, sizeof(buf) - len,
673                         "HW max spur immunity level:\t%d\n",
674                         as->max_spur_level);
675         len += snprintf(buf + len, sizeof(buf) - len,
676                 "\nANI state\n--------------------------------------------\n");
677         len += snprintf(buf + len, sizeof(buf) - len, "operating mode:\t\t\t");
678         switch (as->ani_mode) {
679         case ATH5K_ANI_MODE_OFF:
680                 len += snprintf(buf + len, sizeof(buf) - len, "OFF\n");
681                 break;
682         case ATH5K_ANI_MODE_MANUAL_LOW:
683                 len += snprintf(buf + len, sizeof(buf) - len,
684                         "MANUAL LOW\n");
685                 break;
686         case ATH5K_ANI_MODE_MANUAL_HIGH:
687                 len += snprintf(buf + len, sizeof(buf) - len,
688                         "MANUAL HIGH\n");
689                 break;
690         case ATH5K_ANI_MODE_AUTO:
691                 len += snprintf(buf + len, sizeof(buf) - len, "AUTO\n");
692                 break;
693         default:
694                 len += snprintf(buf + len, sizeof(buf) - len,
695                         "??? (not good)\n");
696                 break;
697         }
698         len += snprintf(buf + len, sizeof(buf) - len,
699                         "noise immunity level:\t\t%d\n",
700                         as->noise_imm_level);
701         len += snprintf(buf + len, sizeof(buf) - len,
702                         "spur immunity level:\t\t%d\n",
703                         as->spur_level);
704         len += snprintf(buf + len, sizeof(buf) - len,
705                         "firstep level:\t\t\t%d\n",
706                         as->firstep_level);
707         len += snprintf(buf + len, sizeof(buf) - len,
708                         "OFDM weak signal detection:\t%s\n",
709                         as->ofdm_weak_sig ? "on" : "off");
710         len += snprintf(buf + len, sizeof(buf) - len,
711                         "CCK weak signal detection:\t%s\n",
712                         as->cck_weak_sig ? "on" : "off");
713
714         len += snprintf(buf + len, sizeof(buf) - len,
715                         "\nMIB INTERRUPTS:\t\t%u\n",
716                         st->mib_intr);
717         len += snprintf(buf + len, sizeof(buf) - len,
718                         "beacon RSSI average:\t%d\n",
719                         (int)ewma_read(&ah->ah_beacon_rssi_avg));
720
721 #define CC_PRINT(_struct, _field) \
722         _struct._field, \
723         _struct.cycles > 0 ? \
724         _struct._field * 100 / _struct.cycles : 0
725
726         len += snprintf(buf + len, sizeof(buf) - len,
727                         "profcnt tx\t\t%u\t(%d%%)\n",
728                         CC_PRINT(as->last_cc, tx_frame));
729         len += snprintf(buf + len, sizeof(buf) - len,
730                         "profcnt rx\t\t%u\t(%d%%)\n",
731                         CC_PRINT(as->last_cc, rx_frame));
732         len += snprintf(buf + len, sizeof(buf) - len,
733                         "profcnt busy\t\t%u\t(%d%%)\n",
734                         CC_PRINT(as->last_cc, rx_busy));
735 #undef CC_PRINT
736         len += snprintf(buf + len, sizeof(buf) - len, "profcnt cycles\t\t%u\n",
737                         as->last_cc.cycles);
738         len += snprintf(buf + len, sizeof(buf) - len,
739                         "listen time\t\t%d\tlast: %d\n",
740                         as->listen_time, as->last_listen);
741         len += snprintf(buf + len, sizeof(buf) - len,
742                         "OFDM errors\t\t%u\tlast: %u\tsum: %u\n",
743                         as->ofdm_errors, as->last_ofdm_errors,
744                         as->sum_ofdm_errors);
745         len += snprintf(buf + len, sizeof(buf) - len,
746                         "CCK errors\t\t%u\tlast: %u\tsum: %u\n",
747                         as->cck_errors, as->last_cck_errors,
748                         as->sum_cck_errors);
749         len += snprintf(buf + len, sizeof(buf) - len,
750                         "AR5K_PHYERR_CNT1\t%x\t(=%d)\n",
751                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1),
752                         ATH5K_ANI_OFDM_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
753                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT1)));
754         len += snprintf(buf + len, sizeof(buf) - len,
755                         "AR5K_PHYERR_CNT2\t%x\t(=%d)\n",
756                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2),
757                         ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
758                         ath5k_hw_reg_read(ah, AR5K_PHYERR_CNT2)));
759
760         if (len > sizeof(buf))
761                 len = sizeof(buf);
762
763         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
764 }
765
766 static ssize_t write_file_ani(struct file *file,
767                                  const char __user *userbuf,
768                                  size_t count, loff_t *ppos)
769 {
770         struct ath5k_hw *ah = file->private_data;
771         char buf[20];
772
773         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
774                 return -EFAULT;
775
776         if (strncmp(buf, "sens-low", 8) == 0) {
777                 ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_HIGH);
778         } else if (strncmp(buf, "sens-high", 9) == 0) {
779                 ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_LOW);
780         } else if (strncmp(buf, "ani-off", 7) == 0) {
781                 ath5k_ani_init(ah, ATH5K_ANI_MODE_OFF);
782         } else if (strncmp(buf, "ani-on", 6) == 0) {
783                 ath5k_ani_init(ah, ATH5K_ANI_MODE_AUTO);
784         } else if (strncmp(buf, "noise-low", 9) == 0) {
785                 ath5k_ani_set_noise_immunity_level(ah, 0);
786         } else if (strncmp(buf, "noise-high", 10) == 0) {
787                 ath5k_ani_set_noise_immunity_level(ah,
788                                                    ATH5K_ANI_MAX_NOISE_IMM_LVL);
789         } else if (strncmp(buf, "spur-low", 8) == 0) {
790                 ath5k_ani_set_spur_immunity_level(ah, 0);
791         } else if (strncmp(buf, "spur-high", 9) == 0) {
792                 ath5k_ani_set_spur_immunity_level(ah,
793                                                   ah->ani_state.max_spur_level);
794         } else if (strncmp(buf, "fir-low", 7) == 0) {
795                 ath5k_ani_set_firstep_level(ah, 0);
796         } else if (strncmp(buf, "fir-high", 8) == 0) {
797                 ath5k_ani_set_firstep_level(ah, ATH5K_ANI_MAX_FIRSTEP_LVL);
798         } else if (strncmp(buf, "ofdm-off", 8) == 0) {
799                 ath5k_ani_set_ofdm_weak_signal_detection(ah, false);
800         } else if (strncmp(buf, "ofdm-on", 7) == 0) {
801                 ath5k_ani_set_ofdm_weak_signal_detection(ah, true);
802         } else if (strncmp(buf, "cck-off", 7) == 0) {
803                 ath5k_ani_set_cck_weak_signal_detection(ah, false);
804         } else if (strncmp(buf, "cck-on", 6) == 0) {
805                 ath5k_ani_set_cck_weak_signal_detection(ah, true);
806         }
807         return count;
808 }
809
810 static const struct file_operations fops_ani = {
811         .read = read_file_ani,
812         .write = write_file_ani,
813         .open = ath5k_debugfs_open,
814         .owner = THIS_MODULE,
815         .llseek = default_llseek,
816 };
817
818
819 /* debugfs: queues etc */
820
821 static ssize_t read_file_queue(struct file *file, char __user *user_buf,
822                                    size_t count, loff_t *ppos)
823 {
824         struct ath5k_hw *ah = file->private_data;
825         char buf[700];
826         unsigned int len = 0;
827
828         struct ath5k_txq *txq;
829         struct ath5k_buf *bf, *bf0;
830         int i, n;
831
832         len += snprintf(buf + len, sizeof(buf) - len,
833                         "available txbuffers: %d\n", ah->txbuf_len);
834
835         for (i = 0; i < ARRAY_SIZE(ah->txqs); i++) {
836                 txq = &ah->txqs[i];
837
838                 len += snprintf(buf + len, sizeof(buf) - len,
839                         "%02d: %ssetup\n", i, txq->setup ? "" : "not ");
840
841                 if (!txq->setup)
842                         continue;
843
844                 n = 0;
845                 spin_lock_bh(&txq->lock);
846                 list_for_each_entry_safe(bf, bf0, &txq->q, list)
847                         n++;
848                 spin_unlock_bh(&txq->lock);
849
850                 len += snprintf(buf + len, sizeof(buf) - len,
851                                 "  len: %d bufs: %d\n", txq->txq_len, n);
852                 len += snprintf(buf + len, sizeof(buf) - len,
853                                 "  stuck: %d\n", txq->txq_stuck);
854         }
855
856         if (len > sizeof(buf))
857                 len = sizeof(buf);
858
859         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
860 }
861
862 static ssize_t write_file_queue(struct file *file,
863                                  const char __user *userbuf,
864                                  size_t count, loff_t *ppos)
865 {
866         struct ath5k_hw *ah = file->private_data;
867         char buf[20];
868
869         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
870                 return -EFAULT;
871
872         if (strncmp(buf, "start", 5) == 0)
873                 ieee80211_wake_queues(ah->hw);
874         else if (strncmp(buf, "stop", 4) == 0)
875                 ieee80211_stop_queues(ah->hw);
876
877         return count;
878 }
879
880
881 static const struct file_operations fops_queue = {
882         .read = read_file_queue,
883         .write = write_file_queue,
884         .open = ath5k_debugfs_open,
885         .owner = THIS_MODULE,
886         .llseek = default_llseek,
887 };
888
889
890 void
891 ath5k_debug_init_device(struct ath5k_hw *ah)
892 {
893         struct dentry *phydir;
894
895         ah->debug.level = ath5k_debug;
896
897         phydir = debugfs_create_dir("ath5k", ah->hw->wiphy->debugfsdir);
898         if (!phydir)
899                 return;
900
901         debugfs_create_file("debug", S_IWUSR | S_IRUSR, phydir, ah,
902                             &fops_debug);
903
904         debugfs_create_file("registers", S_IRUSR, phydir, ah, &fops_registers);
905
906         debugfs_create_file("beacon", S_IWUSR | S_IRUSR, phydir, ah,
907                             &fops_beacon);
908
909         debugfs_create_file("reset", S_IWUSR, phydir, ah, &fops_reset);
910
911         debugfs_create_file("antenna", S_IWUSR | S_IRUSR, phydir, ah,
912                             &fops_antenna);
913
914         debugfs_create_file("misc", S_IRUSR, phydir, ah, &fops_misc);
915
916         debugfs_create_file("frameerrors", S_IWUSR | S_IRUSR, phydir, ah,
917                             &fops_frameerrors);
918
919         debugfs_create_file("ani", S_IWUSR | S_IRUSR, phydir, ah, &fops_ani);
920
921         debugfs_create_file("queue", S_IWUSR | S_IRUSR, phydir, ah,
922                             &fops_queue);
923
924         debugfs_create_bool("32khz_clock", S_IWUSR | S_IRUSR, phydir,
925                             &ah->ah_use_32khz_clock);
926 }
927
928 /* functions used in other places */
929
930 void
931 ath5k_debug_dump_bands(struct ath5k_hw *ah)
932 {
933         unsigned int b, i;
934
935         if (likely(!(ah->debug.level & ATH5K_DEBUG_DUMPBANDS)))
936                 return;
937
938         BUG_ON(!ah->sbands);
939
940         for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
941                 struct ieee80211_supported_band *band = &ah->sbands[b];
942                 char bname[6];
943                 switch (band->band) {
944                 case IEEE80211_BAND_2GHZ:
945                         strcpy(bname, "2 GHz");
946                         break;
947                 case IEEE80211_BAND_5GHZ:
948                         strcpy(bname, "5 GHz");
949                         break;
950                 default:
951                         printk(KERN_DEBUG "Band not supported: %d\n",
952                                 band->band);
953                         return;
954                 }
955                 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
956                                 band->n_channels, band->n_bitrates);
957                 printk(KERN_DEBUG " channels:\n");
958                 for (i = 0; i < band->n_channels; i++)
959                         printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
960                                         ieee80211_frequency_to_channel(
961                                                 band->channels[i].center_freq),
962                                         band->channels[i].center_freq,
963                                         band->channels[i].hw_value,
964                                         band->channels[i].flags);
965                 printk(KERN_DEBUG " rates:\n");
966                 for (i = 0; i < band->n_bitrates; i++)
967                         printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
968                                         band->bitrates[i].bitrate,
969                                         band->bitrates[i].hw_value,
970                                         band->bitrates[i].flags,
971                                         band->bitrates[i].hw_value_short);
972         }
973 }
974
975 static inline void
976 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
977                        struct ath5k_rx_status *rs)
978 {
979         struct ath5k_desc *ds = bf->desc;
980         struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
981
982         printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
983                 ds, (unsigned long long)bf->daddr,
984                 ds->ds_link, ds->ds_data,
985                 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
986                 rd->rx_stat.rx_status_0, rd->rx_stat.rx_status_1,
987                 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
988 }
989
990 void
991 ath5k_debug_printrxbuffs(struct ath5k_hw *ah)
992 {
993         struct ath5k_desc *ds;
994         struct ath5k_buf *bf;
995         struct ath5k_rx_status rs = {};
996         int status;
997
998         if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC)))
999                 return;
1000
1001         printk(KERN_DEBUG "rxdp %x, rxlink %p\n",
1002                 ath5k_hw_get_rxdp(ah), ah->rxlink);
1003
1004         spin_lock_bh(&ah->rxbuflock);
1005         list_for_each_entry(bf, &ah->rxbuf, list) {
1006                 ds = bf->desc;
1007                 status = ah->ah_proc_rx_desc(ah, ds, &rs);
1008                 if (!status)
1009                         ath5k_debug_printrxbuf(bf, status == 0, &rs);
1010         }
1011         spin_unlock_bh(&ah->rxbuflock);
1012 }
1013
1014 void
1015 ath5k_debug_printtxbuf(struct ath5k_hw *ah, struct ath5k_buf *bf)
1016 {
1017         struct ath5k_desc *ds = bf->desc;
1018         struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
1019         struct ath5k_tx_status ts = {};
1020         int done;
1021
1022         if (likely(!(ah->debug.level & ATH5K_DEBUG_DESC)))
1023                 return;
1024
1025         done = ah->ah_proc_tx_desc(ah, bf->desc, &ts);
1026
1027         printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
1028                 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
1029                 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
1030                 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
1031                 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
1032                 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
1033 }