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[kernel/linux-2.6.36.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 struct dentry *ath5k_global_debugfs;
75
76 static int ath5k_debugfs_open(struct inode *inode, struct file *file)
77 {
78         file->private_data = inode->i_private;
79         return 0;
80 }
81
82
83 /* debugfs: registers */
84
85 struct reg {
86         const char *name;
87         int addr;
88 };
89
90 #define REG_STRUCT_INIT(r) { #r, r }
91
92 /* just a few random registers, might want to add more */
93 static const struct reg regs[] = {
94         REG_STRUCT_INIT(AR5K_CR),
95         REG_STRUCT_INIT(AR5K_RXDP),
96         REG_STRUCT_INIT(AR5K_CFG),
97         REG_STRUCT_INIT(AR5K_IER),
98         REG_STRUCT_INIT(AR5K_BCR),
99         REG_STRUCT_INIT(AR5K_RTSD0),
100         REG_STRUCT_INIT(AR5K_RTSD1),
101         REG_STRUCT_INIT(AR5K_TXCFG),
102         REG_STRUCT_INIT(AR5K_RXCFG),
103         REG_STRUCT_INIT(AR5K_RXJLA),
104         REG_STRUCT_INIT(AR5K_MIBC),
105         REG_STRUCT_INIT(AR5K_TOPS),
106         REG_STRUCT_INIT(AR5K_RXNOFRM),
107         REG_STRUCT_INIT(AR5K_TXNOFRM),
108         REG_STRUCT_INIT(AR5K_RPGTO),
109         REG_STRUCT_INIT(AR5K_RFCNT),
110         REG_STRUCT_INIT(AR5K_MISC),
111         REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT),
112         REG_STRUCT_INIT(AR5K_ISR),
113         REG_STRUCT_INIT(AR5K_PISR),
114         REG_STRUCT_INIT(AR5K_SISR0),
115         REG_STRUCT_INIT(AR5K_SISR1),
116         REG_STRUCT_INIT(AR5K_SISR2),
117         REG_STRUCT_INIT(AR5K_SISR3),
118         REG_STRUCT_INIT(AR5K_SISR4),
119         REG_STRUCT_INIT(AR5K_IMR),
120         REG_STRUCT_INIT(AR5K_PIMR),
121         REG_STRUCT_INIT(AR5K_SIMR0),
122         REG_STRUCT_INIT(AR5K_SIMR1),
123         REG_STRUCT_INIT(AR5K_SIMR2),
124         REG_STRUCT_INIT(AR5K_SIMR3),
125         REG_STRUCT_INIT(AR5K_SIMR4),
126         REG_STRUCT_INIT(AR5K_DCM_ADDR),
127         REG_STRUCT_INIT(AR5K_DCCFG),
128         REG_STRUCT_INIT(AR5K_CCFG),
129         REG_STRUCT_INIT(AR5K_CPC0),
130         REG_STRUCT_INIT(AR5K_CPC1),
131         REG_STRUCT_INIT(AR5K_CPC2),
132         REG_STRUCT_INIT(AR5K_CPC3),
133         REG_STRUCT_INIT(AR5K_CPCOVF),
134         REG_STRUCT_INIT(AR5K_RESET_CTL),
135         REG_STRUCT_INIT(AR5K_SLEEP_CTL),
136         REG_STRUCT_INIT(AR5K_INTPEND),
137         REG_STRUCT_INIT(AR5K_SFR),
138         REG_STRUCT_INIT(AR5K_PCICFG),
139         REG_STRUCT_INIT(AR5K_GPIOCR),
140         REG_STRUCT_INIT(AR5K_GPIODO),
141         REG_STRUCT_INIT(AR5K_SREV),
142 };
143
144 static void *reg_start(struct seq_file *seq, loff_t *pos)
145 {
146         return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
147 }
148
149 static void reg_stop(struct seq_file *seq, void *p)
150 {
151         /* nothing to do */
152 }
153
154 static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
155 {
156         ++*pos;
157         return *pos < ARRAY_SIZE(regs) ? (void *)&regs[*pos] : NULL;
158 }
159
160 static int reg_show(struct seq_file *seq, void *p)
161 {
162         struct ath5k_softc *sc = seq->private;
163         struct reg *r = p;
164         seq_printf(seq, "%-25s0x%08x\n", r->name,
165                 ath5k_hw_reg_read(sc->ah, r->addr));
166         return 0;
167 }
168
169 static const struct seq_operations register_seq_ops = {
170         .start = reg_start,
171         .next  = reg_next,
172         .stop  = reg_stop,
173         .show  = reg_show
174 };
175
176 static int open_file_registers(struct inode *inode, struct file *file)
177 {
178         struct seq_file *s;
179         int res;
180         res = seq_open(file, &register_seq_ops);
181         if (res == 0) {
182                 s = file->private_data;
183                 s->private = inode->i_private;
184         }
185         return res;
186 }
187
188 static const struct file_operations fops_registers = {
189         .open = open_file_registers,
190         .read    = seq_read,
191         .llseek  = seq_lseek,
192         .release = seq_release,
193         .owner = THIS_MODULE,
194 };
195
196
197 /* debugfs: beacons */
198
199 static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
200                                    size_t count, loff_t *ppos)
201 {
202         struct ath5k_softc *sc = file->private_data;
203         struct ath5k_hw *ah = sc->ah;
204         char buf[500];
205         unsigned int len = 0;
206         unsigned int v;
207         u64 tsf;
208
209         v = ath5k_hw_reg_read(sc->ah, AR5K_BEACON);
210         len += snprintf(buf+len, sizeof(buf)-len,
211                 "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
212                 "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
213                 (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
214
215         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n",
216                 "AR5K_LAST_TSTP", ath5k_hw_reg_read(sc->ah, AR5K_LAST_TSTP));
217
218         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n\n",
219                 "AR5K_BEACON_CNT", ath5k_hw_reg_read(sc->ah, AR5K_BEACON_CNT));
220
221         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER0);
222         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
223                 "AR5K_TIMER0 (TBTT)", v, v);
224
225         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER1);
226         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
227                 "AR5K_TIMER1 (DMA)", v, v >> 3);
228
229         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER2);
230         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
231                 "AR5K_TIMER2 (SWBA)", v, v >> 3);
232
233         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER3);
234         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
235                 "AR5K_TIMER3 (ATIM)", v, v);
236
237         tsf = ath5k_hw_get_tsf64(sc->ah);
238         len += snprintf(buf+len, sizeof(buf)-len,
239                 "TSF\t\t0x%016llx\tTU: %08x\n",
240                 (unsigned long long)tsf, TSF_TO_TU(tsf));
241
242         if (len > sizeof(buf))
243                 len = sizeof(buf);
244
245         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
246 }
247
248 static ssize_t write_file_beacon(struct file *file,
249                                  const char __user *userbuf,
250                                  size_t count, loff_t *ppos)
251 {
252         struct ath5k_softc *sc = file->private_data;
253         struct ath5k_hw *ah = sc->ah;
254         char buf[20];
255
256         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
257                 return -EFAULT;
258
259         if (strncmp(buf, "disable", 7) == 0) {
260                 AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
261                 printk(KERN_INFO "debugfs disable beacons\n");
262         } else if (strncmp(buf, "enable", 6) == 0) {
263                 AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
264                 printk(KERN_INFO "debugfs enable beacons\n");
265         }
266         return count;
267 }
268
269 static const struct file_operations fops_beacon = {
270         .read = read_file_beacon,
271         .write = write_file_beacon,
272         .open = ath5k_debugfs_open,
273         .owner = THIS_MODULE,
274 };
275
276
277 /* debugfs: reset */
278
279 static ssize_t write_file_reset(struct file *file,
280                                  const char __user *userbuf,
281                                  size_t count, loff_t *ppos)
282 {
283         struct ath5k_softc *sc = file->private_data;
284         ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "debug file triggered reset\n");
285         ieee80211_queue_work(sc->hw, &sc->reset_work);
286         return count;
287 }
288
289 static const struct file_operations fops_reset = {
290         .write = write_file_reset,
291         .open = ath5k_debugfs_open,
292         .owner = THIS_MODULE,
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_DUMP_RX,  "dumprx",       "print received skb content" },
312         { ATH5K_DEBUG_DUMP_TX,  "dumptx",       "print transmit skb content" },
313         { ATH5K_DEBUG_DUMPBANDS, "dumpbands",   "dump bands" },
314         { ATH5K_DEBUG_ANI,      "ani",          "adaptive noise immunity" },
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 };
373
374
375 /* debugfs: antenna */
376
377 static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
378                                    size_t count, loff_t *ppos)
379 {
380         struct ath5k_softc *sc = file->private_data;
381         char buf[700];
382         unsigned int len = 0;
383         unsigned int i;
384         unsigned int v;
385
386         len += snprintf(buf+len, sizeof(buf)-len, "antenna mode\t%d\n",
387                 sc->ah->ah_ant_mode);
388         len += snprintf(buf+len, sizeof(buf)-len, "default antenna\t%d\n",
389                 sc->ah->ah_def_ant);
390         len += snprintf(buf+len, sizeof(buf)-len, "tx antenna\t%d\n",
391                 sc->ah->ah_tx_ant);
392
393         len += snprintf(buf+len, sizeof(buf)-len, "\nANTENNA\t\tRX\tTX\n");
394         for (i = 1; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
395                 len += snprintf(buf+len, sizeof(buf)-len,
396                         "[antenna %d]\t%d\t%d\n",
397                         i, sc->stats.antenna_rx[i], sc->stats.antenna_tx[i]);
398         }
399         len += snprintf(buf+len, sizeof(buf)-len, "[invalid]\t%d\t%d\n",
400                         sc->stats.antenna_rx[0], sc->stats.antenna_tx[0]);
401
402         v = ath5k_hw_reg_read(sc->ah, AR5K_DEFAULT_ANTENNA);
403         len += snprintf(buf+len, sizeof(buf)-len,
404                         "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
405
406         v = ath5k_hw_reg_read(sc->ah, AR5K_STA_ID1);
407         len += snprintf(buf+len, sizeof(buf)-len,
408                 "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
409                 (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
410         len += snprintf(buf+len, sizeof(buf)-len,
411                 "AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
412                 (v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
413         len += snprintf(buf+len, sizeof(buf)-len,
414                 "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
415                 (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
416         len += snprintf(buf+len, sizeof(buf)-len,
417                 "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
418                 (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
419
420         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_AGCCTL);
421         len += snprintf(buf+len, sizeof(buf)-len,
422                 "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
423                 (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
424
425         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_RESTART);
426         len += snprintf(buf+len, sizeof(buf)-len,
427                 "AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
428                 (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
429
430         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_FAST_ANT_DIV);
431         len += snprintf(buf+len, sizeof(buf)-len,
432                 "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
433                 (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
434
435         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_ANT_SWITCH_TABLE_0);
436         len += snprintf(buf+len, sizeof(buf)-len,
437                         "\nAR5K_PHY_ANT_SWITCH_TABLE_0\t0x%08x\n", v);
438         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_ANT_SWITCH_TABLE_1);
439         len += snprintf(buf+len, sizeof(buf)-len,
440                         "AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v);
441
442         if (len > sizeof(buf))
443                 len = sizeof(buf);
444
445         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
446 }
447
448 static ssize_t write_file_antenna(struct file *file,
449                                  const char __user *userbuf,
450                                  size_t count, loff_t *ppos)
451 {
452         struct ath5k_softc *sc = file->private_data;
453         unsigned int i;
454         char buf[20];
455
456         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
457                 return -EFAULT;
458
459         if (strncmp(buf, "diversity", 9) == 0) {
460                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_DEFAULT);
461                 printk(KERN_INFO "ath5k debug: enable diversity\n");
462         } else if (strncmp(buf, "fixed-a", 7) == 0) {
463                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_A);
464                 printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
465         } else if (strncmp(buf, "fixed-b", 7) == 0) {
466                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_B);
467                 printk(KERN_INFO "ath5k debug: fixed antenna B\n");
468         } else if (strncmp(buf, "clear", 5) == 0) {
469                 for (i = 0; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
470                         sc->stats.antenna_rx[i] = 0;
471                         sc->stats.antenna_tx[i] = 0;
472                 }
473                 printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
474         }
475         return count;
476 }
477
478 static const struct file_operations fops_antenna = {
479         .read = read_file_antenna,
480         .write = write_file_antenna,
481         .open = ath5k_debugfs_open,
482         .owner = THIS_MODULE,
483 };
484
485
486 /* debugfs: frameerrors */
487
488 static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
489                                    size_t count, loff_t *ppos)
490 {
491         struct ath5k_softc *sc = file->private_data;
492         struct ath5k_statistics *st = &sc->stats;
493         char buf[700];
494         unsigned int len = 0;
495         int i;
496
497         len += snprintf(buf+len, sizeof(buf)-len,
498                         "RX\n---------------------\n");
499         len += snprintf(buf+len, sizeof(buf)-len, "CRC\t%d\t(%d%%)\n",
500                         st->rxerr_crc,
501                         st->rx_all_count > 0 ?
502                                 st->rxerr_crc*100/st->rx_all_count : 0);
503         len += snprintf(buf+len, sizeof(buf)-len, "PHY\t%d\t(%d%%)\n",
504                         st->rxerr_phy,
505                         st->rx_all_count > 0 ?
506                                 st->rxerr_phy*100/st->rx_all_count : 0);
507         for (i = 0; i < 32; i++) {
508                 if (st->rxerr_phy_code[i])
509                         len += snprintf(buf+len, sizeof(buf)-len,
510                                 " phy_err[%d]\t%d\n",
511                                 i, st->rxerr_phy_code[i]);
512         }
513
514         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
515                         st->rxerr_fifo,
516                         st->rx_all_count > 0 ?
517                                 st->rxerr_fifo*100/st->rx_all_count : 0);
518         len += snprintf(buf+len, sizeof(buf)-len, "decrypt\t%d\t(%d%%)\n",
519                         st->rxerr_decrypt,
520                         st->rx_all_count > 0 ?
521                                 st->rxerr_decrypt*100/st->rx_all_count : 0);
522         len += snprintf(buf+len, sizeof(buf)-len, "MIC\t%d\t(%d%%)\n",
523                         st->rxerr_mic,
524                         st->rx_all_count > 0 ?
525                                 st->rxerr_mic*100/st->rx_all_count : 0);
526         len += snprintf(buf+len, sizeof(buf)-len, "process\t%d\t(%d%%)\n",
527                         st->rxerr_proc,
528                         st->rx_all_count > 0 ?
529                                 st->rxerr_proc*100/st->rx_all_count : 0);
530         len += snprintf(buf+len, sizeof(buf)-len, "jumbo\t%d\t(%d%%)\n",
531                         st->rxerr_jumbo,
532                         st->rx_all_count > 0 ?
533                                 st->rxerr_jumbo*100/st->rx_all_count : 0);
534         len += snprintf(buf+len, sizeof(buf)-len, "[RX all\t%d]\n",
535                         st->rx_all_count);
536
537         len += snprintf(buf+len, sizeof(buf)-len,
538                         "\nTX\n---------------------\n");
539         len += snprintf(buf+len, sizeof(buf)-len, "retry\t%d\t(%d%%)\n",
540                         st->txerr_retry,
541                         st->tx_all_count > 0 ?
542                                 st->txerr_retry*100/st->tx_all_count : 0);
543         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
544                         st->txerr_fifo,
545                         st->tx_all_count > 0 ?
546                                 st->txerr_fifo*100/st->tx_all_count : 0);
547         len += snprintf(buf+len, sizeof(buf)-len, "filter\t%d\t(%d%%)\n",
548                         st->txerr_filt,
549                         st->tx_all_count > 0 ?
550                                 st->txerr_filt*100/st->tx_all_count : 0);
551         len += snprintf(buf+len, sizeof(buf)-len, "[TX all\t%d]\n",
552                         st->tx_all_count);
553
554         if (len > sizeof(buf))
555                 len = sizeof(buf);
556
557         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
558 }
559
560 static ssize_t write_file_frameerrors(struct file *file,
561                                  const char __user *userbuf,
562                                  size_t count, loff_t *ppos)
563 {
564         struct ath5k_softc *sc = file->private_data;
565         struct ath5k_statistics *st = &sc->stats;
566         char buf[20];
567
568         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
569                 return -EFAULT;
570
571         if (strncmp(buf, "clear", 5) == 0) {
572                 st->rxerr_crc = 0;
573                 st->rxerr_phy = 0;
574                 st->rxerr_fifo = 0;
575                 st->rxerr_decrypt = 0;
576                 st->rxerr_mic = 0;
577                 st->rxerr_proc = 0;
578                 st->rxerr_jumbo = 0;
579                 st->rx_all_count = 0;
580                 st->txerr_retry = 0;
581                 st->txerr_fifo = 0;
582                 st->txerr_filt = 0;
583                 st->tx_all_count = 0;
584                 printk(KERN_INFO "ath5k debug: cleared frameerrors stats\n");
585         }
586         return count;
587 }
588
589 static const struct file_operations fops_frameerrors = {
590         .read = read_file_frameerrors,
591         .write = write_file_frameerrors,
592         .open = ath5k_debugfs_open,
593         .owner = THIS_MODULE,
594 };
595
596
597 /* debugfs: ani */
598
599 static ssize_t read_file_ani(struct file *file, char __user *user_buf,
600                                    size_t count, loff_t *ppos)
601 {
602         struct ath5k_softc *sc = file->private_data;
603         struct ath5k_statistics *st = &sc->stats;
604         struct ath5k_ani_state *as = &sc->ani_state;
605
606         char buf[700];
607         unsigned int len = 0;
608
609         len += snprintf(buf+len, sizeof(buf)-len,
610                         "HW has PHY error counters:\t%s\n",
611                         sc->ah->ah_capabilities.cap_has_phyerr_counters ?
612                         "yes" : "no");
613         len += snprintf(buf+len, sizeof(buf)-len,
614                         "HW max spur immunity level:\t%d\n",
615                         as->max_spur_level);
616         len += snprintf(buf+len, sizeof(buf)-len,
617                 "\nANI state\n--------------------------------------------\n");
618         len += snprintf(buf+len, sizeof(buf)-len, "operating mode:\t\t\t");
619         switch (as->ani_mode) {
620         case ATH5K_ANI_MODE_OFF:
621                 len += snprintf(buf+len, sizeof(buf)-len, "OFF\n");
622                 break;
623         case ATH5K_ANI_MODE_MANUAL_LOW:
624                 len += snprintf(buf+len, sizeof(buf)-len,
625                         "MANUAL LOW\n");
626                 break;
627         case ATH5K_ANI_MODE_MANUAL_HIGH:
628                 len += snprintf(buf+len, sizeof(buf)-len,
629                         "MANUAL HIGH\n");
630                 break;
631         case ATH5K_ANI_MODE_AUTO:
632                 len += snprintf(buf+len, sizeof(buf)-len, "AUTO\n");
633                 break;
634         default:
635                 len += snprintf(buf+len, sizeof(buf)-len,
636                         "??? (not good)\n");
637                 break;
638         }
639         len += snprintf(buf+len, sizeof(buf)-len,
640                         "noise immunity level:\t\t%d\n",
641                         as->noise_imm_level);
642         len += snprintf(buf+len, sizeof(buf)-len,
643                         "spur immunity level:\t\t%d\n",
644                         as->spur_level);
645         len += snprintf(buf+len, sizeof(buf)-len, "firstep level:\t\t\t%d\n",
646                         as->firstep_level);
647         len += snprintf(buf+len, sizeof(buf)-len,
648                         "OFDM weak signal detection:\t%s\n",
649                         as->ofdm_weak_sig ? "on" : "off");
650         len += snprintf(buf+len, sizeof(buf)-len,
651                         "CCK weak signal detection:\t%s\n",
652                         as->cck_weak_sig ? "on" : "off");
653
654         len += snprintf(buf+len, sizeof(buf)-len,
655                         "\nMIB INTERRUPTS:\t\t%u\n",
656                         st->mib_intr);
657         len += snprintf(buf+len, sizeof(buf)-len,
658                         "beacon RSSI average:\t%d\n",
659                         sc->ah->ah_beacon_rssi_avg.avg);
660         len += snprintf(buf+len, sizeof(buf)-len, "profcnt tx\t\t%u\t(%d%%)\n",
661                         as->pfc_tx,
662                         as->pfc_cycles > 0 ?
663                         as->pfc_tx*100/as->pfc_cycles : 0);
664         len += snprintf(buf+len, sizeof(buf)-len, "profcnt rx\t\t%u\t(%d%%)\n",
665                         as->pfc_rx,
666                         as->pfc_cycles > 0 ?
667                         as->pfc_rx*100/as->pfc_cycles : 0);
668         len += snprintf(buf+len, sizeof(buf)-len, "profcnt busy\t\t%u\t(%d%%)\n",
669                         as->pfc_busy,
670                         as->pfc_cycles > 0 ?
671                         as->pfc_busy*100/as->pfc_cycles : 0);
672         len += snprintf(buf+len, sizeof(buf)-len, "profcnt cycles\t\t%u\n",
673                         as->pfc_cycles);
674         len += snprintf(buf+len, sizeof(buf)-len,
675                         "listen time\t\t%d\tlast: %d\n",
676                         as->listen_time, as->last_listen);
677         len += snprintf(buf+len, sizeof(buf)-len,
678                         "OFDM errors\t\t%u\tlast: %u\tsum: %u\n",
679                         as->ofdm_errors, as->last_ofdm_errors,
680                         as->sum_ofdm_errors);
681         len += snprintf(buf+len, sizeof(buf)-len,
682                         "CCK errors\t\t%u\tlast: %u\tsum: %u\n",
683                         as->cck_errors, as->last_cck_errors,
684                         as->sum_cck_errors);
685         len += snprintf(buf+len, sizeof(buf)-len,
686                         "AR5K_PHYERR_CNT1\t%x\t(=%d)\n",
687                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT1),
688                         ATH5K_ANI_OFDM_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
689                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT1)));
690         len += snprintf(buf+len, sizeof(buf)-len,
691                         "AR5K_PHYERR_CNT2\t%x\t(=%d)\n",
692                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT2),
693                         ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
694                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT2)));
695
696         if (len > sizeof(buf))
697                 len = sizeof(buf);
698
699         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
700 }
701
702 static ssize_t write_file_ani(struct file *file,
703                                  const char __user *userbuf,
704                                  size_t count, loff_t *ppos)
705 {
706         struct ath5k_softc *sc = file->private_data;
707         char buf[20];
708
709         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
710                 return -EFAULT;
711
712         if (strncmp(buf, "sens-low", 8) == 0) {
713                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_MANUAL_HIGH);
714         } else if (strncmp(buf, "sens-high", 9) == 0) {
715                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_MANUAL_LOW);
716         } else if (strncmp(buf, "ani-off", 7) == 0) {
717                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_OFF);
718         } else if (strncmp(buf, "ani-on", 6) == 0) {
719                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_AUTO);
720         } else if (strncmp(buf, "noise-low", 9) == 0) {
721                 ath5k_ani_set_noise_immunity_level(sc->ah, 0);
722         } else if (strncmp(buf, "noise-high", 10) == 0) {
723                 ath5k_ani_set_noise_immunity_level(sc->ah,
724                                                    ATH5K_ANI_MAX_NOISE_IMM_LVL);
725         } else if (strncmp(buf, "spur-low", 8) == 0) {
726                 ath5k_ani_set_spur_immunity_level(sc->ah, 0);
727         } else if (strncmp(buf, "spur-high", 9) == 0) {
728                 ath5k_ani_set_spur_immunity_level(sc->ah,
729                                                   sc->ani_state.max_spur_level);
730         } else if (strncmp(buf, "fir-low", 7) == 0) {
731                 ath5k_ani_set_firstep_level(sc->ah, 0);
732         } else if (strncmp(buf, "fir-high", 8) == 0) {
733                 ath5k_ani_set_firstep_level(sc->ah, ATH5K_ANI_MAX_FIRSTEP_LVL);
734         } else if (strncmp(buf, "ofdm-off", 8) == 0) {
735                 ath5k_ani_set_ofdm_weak_signal_detection(sc->ah, false);
736         } else if (strncmp(buf, "ofdm-on", 7) == 0) {
737                 ath5k_ani_set_ofdm_weak_signal_detection(sc->ah, true);
738         } else if (strncmp(buf, "cck-off", 7) == 0) {
739                 ath5k_ani_set_cck_weak_signal_detection(sc->ah, false);
740         } else if (strncmp(buf, "cck-on", 6) == 0) {
741                 ath5k_ani_set_cck_weak_signal_detection(sc->ah, true);
742         }
743         return count;
744 }
745
746 static const struct file_operations fops_ani = {
747         .read = read_file_ani,
748         .write = write_file_ani,
749         .open = ath5k_debugfs_open,
750         .owner = THIS_MODULE,
751 };
752
753
754 /* debugfs: queues etc */
755
756 static ssize_t read_file_queue(struct file *file, char __user *user_buf,
757                                    size_t count, loff_t *ppos)
758 {
759         struct ath5k_softc *sc = file->private_data;
760         char buf[700];
761         unsigned int len = 0;
762
763         struct ath5k_txq *txq;
764         struct ath5k_buf *bf, *bf0;
765         int i, n = 0;
766
767         len += snprintf(buf+len, sizeof(buf)-len,
768                         "available txbuffers: %d\n", sc->txbuf_len);
769
770         for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) {
771                 txq = &sc->txqs[i];
772
773                 len += snprintf(buf+len, sizeof(buf)-len,
774                         "%02d: %ssetup\n", i, txq->setup ? "" : "not ");
775
776                 if (!txq->setup)
777                         continue;
778
779                 list_for_each_entry_safe(bf, bf0, &txq->q, list)
780                         n++;
781                 len += snprintf(buf+len, sizeof(buf)-len, "  len: %d\n", n);
782         }
783
784         if (len > sizeof(buf))
785                 len = sizeof(buf);
786
787         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
788 }
789
790 static ssize_t write_file_queue(struct file *file,
791                                  const char __user *userbuf,
792                                  size_t count, loff_t *ppos)
793 {
794         struct ath5k_softc *sc = file->private_data;
795         char buf[20];
796
797         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
798                 return -EFAULT;
799
800         if (strncmp(buf, "start", 5) == 0)
801                 ieee80211_wake_queues(sc->hw);
802         else if (strncmp(buf, "stop", 4) == 0)
803                 ieee80211_stop_queues(sc->hw);
804
805         return count;
806 }
807
808
809 static const struct file_operations fops_queue = {
810         .read = read_file_queue,
811         .write = write_file_queue,
812         .open = ath5k_debugfs_open,
813         .owner = THIS_MODULE,
814 };
815
816
817 /* init */
818
819 void
820 ath5k_debug_init(void)
821 {
822         ath5k_global_debugfs = debugfs_create_dir("ath5k", NULL);
823 }
824
825 void
826 ath5k_debug_init_device(struct ath5k_softc *sc)
827 {
828         sc->debug.level = ath5k_debug;
829
830         sc->debug.debugfs_phydir = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
831                                 ath5k_global_debugfs);
832
833         sc->debug.debugfs_debug = debugfs_create_file("debug",
834                                 S_IWUSR | S_IRUSR,
835                                 sc->debug.debugfs_phydir, sc, &fops_debug);
836
837         sc->debug.debugfs_registers = debugfs_create_file("registers", S_IRUSR,
838                                 sc->debug.debugfs_phydir, sc, &fops_registers);
839
840         sc->debug.debugfs_beacon = debugfs_create_file("beacon",
841                                 S_IWUSR | S_IRUSR,
842                                 sc->debug.debugfs_phydir, sc, &fops_beacon);
843
844         sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,
845                                 sc->debug.debugfs_phydir, sc, &fops_reset);
846
847         sc->debug.debugfs_antenna = debugfs_create_file("antenna",
848                                 S_IWUSR | S_IRUSR,
849                                 sc->debug.debugfs_phydir, sc, &fops_antenna);
850
851         sc->debug.debugfs_frameerrors = debugfs_create_file("frameerrors",
852                                 S_IWUSR | S_IRUSR,
853                                 sc->debug.debugfs_phydir, sc,
854                                 &fops_frameerrors);
855
856         sc->debug.debugfs_ani = debugfs_create_file("ani",
857                                 S_IWUSR | S_IRUSR,
858                                 sc->debug.debugfs_phydir, sc,
859                                 &fops_ani);
860
861         sc->debug.debugfs_queue = debugfs_create_file("queue",
862                                 S_IWUSR | S_IRUSR,
863                                 sc->debug.debugfs_phydir, sc,
864                                 &fops_queue);
865 }
866
867 void
868 ath5k_debug_finish(void)
869 {
870         debugfs_remove(ath5k_global_debugfs);
871 }
872
873 void
874 ath5k_debug_finish_device(struct ath5k_softc *sc)
875 {
876         debugfs_remove(sc->debug.debugfs_debug);
877         debugfs_remove(sc->debug.debugfs_registers);
878         debugfs_remove(sc->debug.debugfs_beacon);
879         debugfs_remove(sc->debug.debugfs_reset);
880         debugfs_remove(sc->debug.debugfs_antenna);
881         debugfs_remove(sc->debug.debugfs_frameerrors);
882         debugfs_remove(sc->debug.debugfs_ani);
883         debugfs_remove(sc->debug.debugfs_queue);
884         debugfs_remove(sc->debug.debugfs_phydir);
885 }
886
887
888 /* functions used in other places */
889
890 void
891 ath5k_debug_dump_bands(struct ath5k_softc *sc)
892 {
893         unsigned int b, i;
894
895         if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPBANDS)))
896                 return;
897
898         BUG_ON(!sc->sbands);
899
900         for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
901                 struct ieee80211_supported_band *band = &sc->sbands[b];
902                 char bname[6];
903                 switch (band->band) {
904                 case IEEE80211_BAND_2GHZ:
905                         strcpy(bname, "2 GHz");
906                         break;
907                 case IEEE80211_BAND_5GHZ:
908                         strcpy(bname, "5 GHz");
909                         break;
910                 default:
911                         printk(KERN_DEBUG "Band not supported: %d\n",
912                                 band->band);
913                         return;
914                 }
915                 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
916                                 band->n_channels, band->n_bitrates);
917                 printk(KERN_DEBUG " channels:\n");
918                 for (i = 0; i < band->n_channels; i++)
919                         printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
920                                         ieee80211_frequency_to_channel(
921                                                 band->channels[i].center_freq),
922                                         band->channels[i].center_freq,
923                                         band->channels[i].hw_value,
924                                         band->channels[i].flags);
925                 printk(KERN_DEBUG " rates:\n");
926                 for (i = 0; i < band->n_bitrates; i++)
927                         printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
928                                         band->bitrates[i].bitrate,
929                                         band->bitrates[i].hw_value,
930                                         band->bitrates[i].flags,
931                                         band->bitrates[i].hw_value_short);
932         }
933 }
934
935 static inline void
936 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
937                        struct ath5k_rx_status *rs)
938 {
939         struct ath5k_desc *ds = bf->desc;
940         struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
941
942         printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
943                 ds, (unsigned long long)bf->daddr,
944                 ds->ds_link, ds->ds_data,
945                 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
946                 rd->rx_stat.rx_status_0, rd->rx_stat.rx_status_1,
947                 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
948 }
949
950 void
951 ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah)
952 {
953         struct ath5k_desc *ds;
954         struct ath5k_buf *bf;
955         struct ath5k_rx_status rs = {};
956         int status;
957
958         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
959                 return;
960
961         printk(KERN_DEBUG "rxdp %x, rxlink %p\n",
962                 ath5k_hw_get_rxdp(ah), sc->rxlink);
963
964         spin_lock_bh(&sc->rxbuflock);
965         list_for_each_entry(bf, &sc->rxbuf, list) {
966                 ds = bf->desc;
967                 status = ah->ah_proc_rx_desc(ah, ds, &rs);
968                 if (!status)
969                         ath5k_debug_printrxbuf(bf, status == 0, &rs);
970         }
971         spin_unlock_bh(&sc->rxbuflock);
972 }
973
974 void
975 ath5k_debug_dump_skb(struct ath5k_softc *sc,
976                         struct sk_buff *skb, const char *prefix, int tx)
977 {
978         char buf[16];
979
980         if (likely(!((tx && (sc->debug.level & ATH5K_DEBUG_DUMP_TX)) ||
981                      (!tx && (sc->debug.level & ATH5K_DEBUG_DUMP_RX)))))
982                 return;
983
984         snprintf(buf, sizeof(buf), "%s %s", wiphy_name(sc->hw->wiphy), prefix);
985
986         print_hex_dump_bytes(buf, DUMP_PREFIX_NONE, skb->data,
987                 min(200U, skb->len));
988
989         printk(KERN_DEBUG "\n");
990 }
991
992 void
993 ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf)
994 {
995         struct ath5k_desc *ds = bf->desc;
996         struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
997         struct ath5k_tx_status ts = {};
998         int done;
999
1000         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
1001                 return;
1002
1003         done = sc->ah->ah_proc_tx_desc(sc->ah, bf->desc, &ts);
1004
1005         printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
1006                 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
1007                 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
1008                 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
1009                 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
1010                 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
1011 }
1012
1013 #endif /* ifdef CONFIG_ATH5K_DEBUG */