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61#include "base.h"
62#include "debug.h"
63
64static unsigned int ath5k_debug;
65module_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
73static struct dentry *ath5k_global_debugfs;
74
75static int ath5k_debugfs_open(struct inode *inode, struct file *file)
76{
77 file->private_data = inode->i_private;
78 return 0;
79}
80
81
82
83
84struct reg {
85 const char *name;
86 int addr;
87};
88
89#define REG_STRUCT_INIT(r) { #r, r }
90
91
92static const struct reg regs[] = {
93 REG_STRUCT_INIT(AR5K_CR),
94 REG_STRUCT_INIT(AR5K_RXDP),
95 REG_STRUCT_INIT(AR5K_CFG),
96 REG_STRUCT_INIT(AR5K_IER),
97 REG_STRUCT_INIT(AR5K_BCR),
98 REG_STRUCT_INIT(AR5K_RTSD0),
99 REG_STRUCT_INIT(AR5K_RTSD1),
100 REG_STRUCT_INIT(AR5K_TXCFG),
101 REG_STRUCT_INIT(AR5K_RXCFG),
102 REG_STRUCT_INIT(AR5K_RXJLA),
103 REG_STRUCT_INIT(AR5K_MIBC),
104 REG_STRUCT_INIT(AR5K_TOPS),
105 REG_STRUCT_INIT(AR5K_RXNOFRM),
106 REG_STRUCT_INIT(AR5K_TXNOFRM),
107 REG_STRUCT_INIT(AR5K_RPGTO),
108 REG_STRUCT_INIT(AR5K_RFCNT),
109 REG_STRUCT_INIT(AR5K_MISC),
110 REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT),
111 REG_STRUCT_INIT(AR5K_ISR),
112 REG_STRUCT_INIT(AR5K_PISR),
113 REG_STRUCT_INIT(AR5K_SISR0),
114 REG_STRUCT_INIT(AR5K_SISR1),
115 REG_STRUCT_INIT(AR5K_SISR2),
116 REG_STRUCT_INIT(AR5K_SISR3),
117 REG_STRUCT_INIT(AR5K_SISR4),
118 REG_STRUCT_INIT(AR5K_IMR),
119 REG_STRUCT_INIT(AR5K_PIMR),
120 REG_STRUCT_INIT(AR5K_SIMR0),
121 REG_STRUCT_INIT(AR5K_SIMR1),
122 REG_STRUCT_INIT(AR5K_SIMR2),
123 REG_STRUCT_INIT(AR5K_SIMR3),
124 REG_STRUCT_INIT(AR5K_SIMR4),
125 REG_STRUCT_INIT(AR5K_DCM_ADDR),
126 REG_STRUCT_INIT(AR5K_DCCFG),
127 REG_STRUCT_INIT(AR5K_CCFG),
128 REG_STRUCT_INIT(AR5K_CPC0),
129 REG_STRUCT_INIT(AR5K_CPC1),
130 REG_STRUCT_INIT(AR5K_CPC2),
131 REG_STRUCT_INIT(AR5K_CPC3),
132 REG_STRUCT_INIT(AR5K_CPCOVF),
133 REG_STRUCT_INIT(AR5K_RESET_CTL),
134 REG_STRUCT_INIT(AR5K_SLEEP_CTL),
135 REG_STRUCT_INIT(AR5K_INTPEND),
136 REG_STRUCT_INIT(AR5K_SFR),
137 REG_STRUCT_INIT(AR5K_PCICFG),
138 REG_STRUCT_INIT(AR5K_GPIOCR),
139 REG_STRUCT_INIT(AR5K_GPIODO),
140 REG_STRUCT_INIT(AR5K_SREV),
141};
142
143static void *reg_start(struct seq_file *seq, loff_t *pos)
144{
145 return *pos < ARRAY_SIZE(regs) ? (void *)®s[*pos] : NULL;
146}
147
148static void reg_stop(struct seq_file *seq, void *p)
149{
150
151}
152
153static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
154{
155 ++*pos;
156 return *pos < ARRAY_SIZE(regs) ? (void *)®s[*pos] : NULL;
157}
158
159static int reg_show(struct seq_file *seq, void *p)
160{
161 struct ath5k_softc *sc = seq->private;
162 struct reg *r = p;
163 seq_printf(seq, "%-25s0x%08x\n", r->name,
164 ath5k_hw_reg_read(sc->ah, r->addr));
165 return 0;
166}
167
168static const struct seq_operations register_seq_ops = {
169 .start = reg_start,
170 .next = reg_next,
171 .stop = reg_stop,
172 .show = reg_show
173};
174
175static int open_file_registers(struct inode *inode, struct file *file)
176{
177 struct seq_file *s;
178 int res;
179 res = seq_open(file, ®ister_seq_ops);
180 if (res == 0) {
181 s = file->private_data;
182 s->private = inode->i_private;
183 }
184 return res;
185}
186
187static const struct file_operations fops_registers = {
188 .open = open_file_registers,
189 .read = seq_read,
190 .llseek = seq_lseek,
191 .release = seq_release,
192 .owner = THIS_MODULE,
193};
194
195
196
197
198static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
199 size_t count, loff_t *ppos)
200{
201 struct ath5k_softc *sc = file->private_data;
202 struct ath5k_hw *ah = sc->ah;
203 char buf[500];
204 unsigned int len = 0;
205 unsigned int v;
206 u64 tsf;
207
208 v = ath5k_hw_reg_read(sc->ah, AR5K_BEACON);
209 len += snprintf(buf+len, sizeof(buf)-len,
210 "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
211 "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
212 (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
213
214 len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n",
215 "AR5K_LAST_TSTP", ath5k_hw_reg_read(sc->ah, AR5K_LAST_TSTP));
216
217 len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n\n",
218 "AR5K_BEACON_CNT", ath5k_hw_reg_read(sc->ah, AR5K_BEACON_CNT));
219
220 v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER0);
221 len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
222 "AR5K_TIMER0 (TBTT)", v, v);
223
224 v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER1);
225 len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
226 "AR5K_TIMER1 (DMA)", v, v >> 3);
227
228 v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER2);
229 len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
230 "AR5K_TIMER2 (SWBA)", v, v >> 3);
231
232 v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER3);
233 len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
234 "AR5K_TIMER3 (ATIM)", v, v);
235
236 tsf = ath5k_hw_get_tsf64(sc->ah);
237 len += snprintf(buf+len, sizeof(buf)-len,
238 "TSF\t\t0x%016llx\tTU: %08x\n",
239 (unsigned long long)tsf, TSF_TO_TU(tsf));
240
241 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
242}
243
244static ssize_t write_file_beacon(struct file *file,
245 const char __user *userbuf,
246 size_t count, loff_t *ppos)
247{
248 struct ath5k_softc *sc = file->private_data;
249 struct ath5k_hw *ah = sc->ah;
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
265static 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};
271
272
273
274
275static ssize_t write_file_reset(struct file *file,
276 const char __user *userbuf,
277 size_t count, loff_t *ppos)
278{
279 struct ath5k_softc *sc = file->private_data;
280 tasklet_schedule(&sc->restq);
281 return count;
282}
283
284static const struct file_operations fops_reset = {
285 .write = write_file_reset,
286 .open = ath5k_debugfs_open,
287 .owner = THIS_MODULE,
288};
289
290
291
292
293static const struct {
294 enum ath5k_debug_level level;
295 const char *name;
296 const char *desc;
297} dbg_info[] = {
298 { ATH5K_DEBUG_RESET, "reset", "reset and initialization" },
299 { ATH5K_DEBUG_INTR, "intr", "interrupt handling" },
300 { ATH5K_DEBUG_MODE, "mode", "mode init/setup" },
301 { ATH5K_DEBUG_XMIT, "xmit", "basic xmit operation" },
302 { ATH5K_DEBUG_BEACON, "beacon", "beacon handling" },
303 { ATH5K_DEBUG_CALIBRATE, "calib", "periodic calibration" },
304 { ATH5K_DEBUG_TXPOWER, "txpower", "transmit power setting" },
305 { ATH5K_DEBUG_LED, "led", "LED management" },
306 { ATH5K_DEBUG_DUMP_RX, "dumprx", "print received skb content" },
307 { ATH5K_DEBUG_DUMP_TX, "dumptx", "print transmit skb content" },
308 { ATH5K_DEBUG_DUMPBANDS, "dumpbands", "dump bands" },
309 { ATH5K_DEBUG_TRACE, "trace", "trace function calls" },
310 { ATH5K_DEBUG_ANY, "all", "show all debug levels" },
311};
312
313static ssize_t read_file_debug(struct file *file, char __user *user_buf,
314 size_t count, loff_t *ppos)
315{
316 struct ath5k_softc *sc = file->private_data;
317 char buf[700];
318 unsigned int len = 0;
319 unsigned int i;
320
321 len += snprintf(buf+len, sizeof(buf)-len,
322 "DEBUG LEVEL: 0x%08x\n\n", sc->debug.level);
323
324 for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
325 len += snprintf(buf+len, sizeof(buf)-len,
326 "%10s %c 0x%08x - %s\n", dbg_info[i].name,
327 sc->debug.level & dbg_info[i].level ? '+' : ' ',
328 dbg_info[i].level, dbg_info[i].desc);
329 }
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 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
336}
337
338static ssize_t write_file_debug(struct file *file,
339 const char __user *userbuf,
340 size_t count, loff_t *ppos)
341{
342 struct ath5k_softc *sc = file->private_data;
343 unsigned int i;
344 char buf[20];
345
346 if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
347 return -EFAULT;
348
349 for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
350 if (strncmp(buf, dbg_info[i].name,
351 strlen(dbg_info[i].name)) == 0) {
352 sc->debug.level ^= dbg_info[i].level;
353 break;
354 }
355 }
356 return count;
357}
358
359static const struct file_operations fops_debug = {
360 .read = read_file_debug,
361 .write = write_file_debug,
362 .open = ath5k_debugfs_open,
363 .owner = THIS_MODULE,
364};
365
366
367
368
369void
370ath5k_debug_init(void)
371{
372 ath5k_global_debugfs = debugfs_create_dir("ath5k", NULL);
373}
374
375void
376ath5k_debug_init_device(struct ath5k_softc *sc)
377{
378 sc->debug.level = ath5k_debug;
379
380 sc->debug.debugfs_phydir = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
381 ath5k_global_debugfs);
382
383 sc->debug.debugfs_debug = debugfs_create_file("debug",
384 S_IWUSR | S_IRUSR,
385 sc->debug.debugfs_phydir, sc, &fops_debug);
386
387 sc->debug.debugfs_registers = debugfs_create_file("registers", S_IRUSR,
388 sc->debug.debugfs_phydir, sc, &fops_registers);
389
390 sc->debug.debugfs_beacon = debugfs_create_file("beacon",
391 S_IWUSR | S_IRUSR,
392 sc->debug.debugfs_phydir, sc, &fops_beacon);
393
394 sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,
395 sc->debug.debugfs_phydir, sc, &fops_reset);
396}
397
398void
399ath5k_debug_finish(void)
400{
401 debugfs_remove(ath5k_global_debugfs);
402}
403
404void
405ath5k_debug_finish_device(struct ath5k_softc *sc)
406{
407 debugfs_remove(sc->debug.debugfs_debug);
408 debugfs_remove(sc->debug.debugfs_registers);
409 debugfs_remove(sc->debug.debugfs_beacon);
410 debugfs_remove(sc->debug.debugfs_reset);
411 debugfs_remove(sc->debug.debugfs_phydir);
412}
413
414
415
416
417void
418ath5k_debug_dump_bands(struct ath5k_softc *sc)
419{
420 unsigned int b, i;
421
422 if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPBANDS)))
423 return;
424
425 BUG_ON(!sc->sbands);
426
427 for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
428 struct ieee80211_supported_band *band = &sc->sbands[b];
429 char bname[6];
430 switch (band->band) {
431 case IEEE80211_BAND_2GHZ:
432 strcpy(bname, "2 GHz");
433 break;
434 case IEEE80211_BAND_5GHZ:
435 strcpy(bname, "5 GHz");
436 break;
437 default:
438 printk(KERN_DEBUG "Band not supported: %d\n",
439 band->band);
440 return;
441 }
442 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
443 band->n_channels, band->n_bitrates);
444 printk(KERN_DEBUG " channels:\n");
445 for (i = 0; i < band->n_channels; i++)
446 printk(KERN_DEBUG " %3d %d %.4x %.4x\n",
447 ieee80211_frequency_to_channel(
448 band->channels[i].center_freq),
449 band->channels[i].center_freq,
450 band->channels[i].hw_value,
451 band->channels[i].flags);
452 printk(KERN_DEBUG " rates:\n");
453 for (i = 0; i < band->n_bitrates; i++)
454 printk(KERN_DEBUG " %4d %.4x %.4x %.4x\n",
455 band->bitrates[i].bitrate,
456 band->bitrates[i].hw_value,
457 band->bitrates[i].flags,
458 band->bitrates[i].hw_value_short);
459 }
460}
461
462static inline void
463ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
464 struct ath5k_rx_status *rs)
465{
466 struct ath5k_desc *ds = bf->desc;
467 struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
468
469 printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
470 ds, (unsigned long long)bf->daddr,
471 ds->ds_link, ds->ds_data,
472 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
473 rd->u.rx_stat.rx_status_0, rd->u.rx_stat.rx_status_0,
474 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
475}
476
477void
478ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah)
479{
480 struct ath5k_desc *ds;
481 struct ath5k_buf *bf;
482 struct ath5k_rx_status rs = {};
483 int status;
484
485 if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
486 return;
487
488 printk(KERN_DEBUG "rx queue %x, link %p\n",
489 ath5k_hw_get_rxdp(ah), sc->rxlink);
490
491 spin_lock_bh(&sc->rxbuflock);
492 list_for_each_entry(bf, &sc->rxbuf, list) {
493 ds = bf->desc;
494 status = ah->ah_proc_rx_desc(ah, ds, &rs);
495 if (!status)
496 ath5k_debug_printrxbuf(bf, status == 0, &rs);
497 }
498 spin_unlock_bh(&sc->rxbuflock);
499}
500
501void
502ath5k_debug_dump_skb(struct ath5k_softc *sc,
503 struct sk_buff *skb, const char *prefix, int tx)
504{
505 char buf[16];
506
507 if (likely(!((tx && (sc->debug.level & ATH5K_DEBUG_DUMP_TX)) ||
508 (!tx && (sc->debug.level & ATH5K_DEBUG_DUMP_RX)))))
509 return;
510
511 snprintf(buf, sizeof(buf), "%s %s", wiphy_name(sc->hw->wiphy), prefix);
512
513 print_hex_dump_bytes(buf, DUMP_PREFIX_NONE, skb->data,
514 min(200U, skb->len));
515
516 printk(KERN_DEBUG "\n");
517}
518
519void
520ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf)
521{
522 struct ath5k_desc *ds = bf->desc;
523 struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
524 struct ath5k_tx_status ts = {};
525 int done;
526
527 if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
528 return;
529
530 done = sc->ah->ah_proc_tx_desc(sc->ah, bf->desc, &ts);
531
532 printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
533 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
534 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
535 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
536 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
537 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
538}
539
540#endif
541
