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   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
  73 static struct dentry *ath5k_global_debugfs;
  74
  75 static 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 /* debugfs: registers */
  83
  84 struct reg {
  85         char *name;
  86         int addr;
  87 };
  88
  89 #define REG_STRUCT_INIT(r) { #r, r }
  90
  91 /* just a few random registers, might want to add more */
  92 static 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
 143 static void *reg_start(struct seq_file *seq, loff_t *pos)
 144 {
 145         return *pos < ARRAY_SIZE(regs) ? &regs[*pos] : NULL;
 146 }
 147
 148 static void reg_stop(struct seq_file *seq, void *p)
 149 {
 150         /* nothing to do */
 151 }
 152
 153 static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
 154 {
 155         ++*pos;
 156         return *pos < ARRAY_SIZE(regs) ? &regs[*pos] : NULL;
 157 }
 158
 159 static 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
 168 static 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
 175 static int open_file_registers(struct inode *inode, struct file *file)
 176 {
 177         struct seq_file *s;
 178         int res;
 179         res = seq_open(file, &register_seq_ops);
 180         if (res == 0) {
 181                 s = file->private_data;
 182                 s->private = inode->i_private;
 183         }
 184         return res;
 185 }
 186
 187 static 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 /* debugfs: TSF */
 197
 198 static ssize_t read_file_tsf(struct file *file, char __user *user_buf,
 199                                    size_t count, loff_t *ppos)
 200 {
 201         struct ath5k_softc *sc = file->private_data;
 202         char buf[100];
 203         snprintf(buf, sizeof(buf), "0x%016llx\n",
 204                  (unsigned long long)ath5k_hw_get_tsf64(sc->ah));
 205         return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
 206 }
 207
 208 static ssize_t write_file_tsf(struct file *file,
 209                                  const char __user *userbuf,
 210                                  size_t count, loff_t *ppos)
 211 {
 212         struct ath5k_softc *sc = file->private_data;
 213         char buf[21];
 214         unsigned long long tsf;
 215
 216         if (copy_from_user(buf, userbuf, min(count, sizeof(buf) - 1)))
 217                 return -EFAULT;
 218         buf[sizeof(buf) - 1] = '\0';
 219
 220         if (strncmp(buf, "reset", 5) == 0) {
 221                 ath5k_hw_reset_tsf(sc->ah);
 222                 printk(KERN_INFO "debugfs reset TSF\n");
 223         } else {
 224                 tsf = simple_strtoul(buf, NULL, 0);
 225                 ath5k_hw_set_tsf64(sc->ah, tsf);
 226                 printk(KERN_INFO "debugfs set TSF to %#018llx\n", tsf);
 227         }
 228
 229         return count;
 230 }
 231
 232 static const struct file_operations fops_tsf = {
 233         .read = read_file_tsf,
 234         .write = write_file_tsf,
 235         .open = ath5k_debugfs_open,
 236         .owner = THIS_MODULE,
 237 };
 238
 239
 240 /* debugfs: beacons */
 241
 242 static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
 243                                    size_t count, loff_t *ppos)
 244 {
 245         struct ath5k_softc *sc = file->private_data;
 246         struct ath5k_hw *ah = sc->ah;
 247         char buf[500];
 248         unsigned int len = 0;
 249         unsigned int v;
 250         u64 tsf;
 251
 252         v = ath5k_hw_reg_read(sc->ah, AR5K_BEACON);
 253         len += snprintf(buf+len, sizeof(buf)-len,
 254                 "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
 255                 "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
 256                 (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
 257
 258         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n",
 259                 "AR5K_LAST_TSTP", ath5k_hw_reg_read(sc->ah, AR5K_LAST_TSTP));
 260
 261         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n\n",
 262                 "AR5K_BEACON_CNT", ath5k_hw_reg_read(sc->ah, AR5K_BEACON_CNT));
 263
 264         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER0);
 265         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
 266                 "AR5K_TIMER0 (TBTT)", v, v);
 267
 268         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER1);
 269         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
 270                 "AR5K_TIMER1 (DMA)", v, v >> 3);
 271
 272         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER2);
 273         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
 274                 "AR5K_TIMER2 (SWBA)", v, v >> 3);
 275
 276         v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER3);
 277         len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
 278                 "AR5K_TIMER3 (ATIM)", v, v);
 279
 280         tsf = ath5k_hw_get_tsf64(sc->ah);
 281         len += snprintf(buf+len, sizeof(buf)-len,
 282                 "TSF\t\t0x%016llx\tTU: %08x\n",
 283                 (unsigned long long)tsf, TSF_TO_TU(tsf));
 284
 285         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 286 }
 287
 288 static ssize_t write_file_beacon(struct file *file,
 289                                  const char __user *userbuf,
 290                                  size_t count, loff_t *ppos)
 291 {
 292         struct ath5k_softc *sc = file->private_data;
 293         struct ath5k_hw *ah = sc->ah;
 294         char buf[20];
 295
 296         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 297                 return -EFAULT;
 298
 299         if (strncmp(buf, "disable", 7) == 0) {
 300                 AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
 301                 printk(KERN_INFO "debugfs disable beacons\n");
 302         } else if (strncmp(buf, "enable", 6) == 0) {
 303                 AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
 304                 printk(KERN_INFO "debugfs enable beacons\n");
 305         }
 306         return count;
 307 }
 308
 309 static const struct file_operations fops_beacon = {
 310         .read = read_file_beacon,
 311         .write = write_file_beacon,
 312         .open = ath5k_debugfs_open,
 313         .owner = THIS_MODULE,
 314 };
 315
 316
 317 /* debugfs: reset */
 318
 319 static ssize_t write_file_reset(struct file *file,
 320                                  const char __user *userbuf,
 321                                  size_t count, loff_t *ppos)
 322 {
 323         struct ath5k_softc *sc = file->private_data;
 324         tasklet_schedule(&sc->restq);
 325         return count;
 326 }
 327
 328 static const struct file_operations fops_reset = {
 329         .write = write_file_reset,
 330         .open = ath5k_debugfs_open,
 331         .owner = THIS_MODULE,
 332 };
 333
 334
 335 /* debugfs: debug level */
 336
 337 static struct {
 338         enum ath5k_debug_level level;
 339         const char *name;
 340         const char *desc;
 341 } dbg_info[] = {
 342         { ATH5K_DEBUG_RESET,    "reset",        "reset and initialization" },
 343         { ATH5K_DEBUG_INTR,     "intr",         "interrupt handling" },
 344         { ATH5K_DEBUG_MODE,     "mode",         "mode init/setup" },
 345         { ATH5K_DEBUG_XMIT,     "xmit",         "basic xmit operation" },
 346         { ATH5K_DEBUG_BEACON,   "beacon",       "beacon handling" },
 347         { ATH5K_DEBUG_CALIBRATE, "calib",       "periodic calibration" },
 348         { ATH5K_DEBUG_TXPOWER,  "txpower",      "transmit power setting" },
 349         { ATH5K_DEBUG_LED,      "led",          "LED management" },
 350         { ATH5K_DEBUG_DUMP_RX,  "dumprx",       "print received skb content" },
 351         { ATH5K_DEBUG_DUMP_TX,  "dumptx",       "print transmit skb content" },
 352         { ATH5K_DEBUG_DUMPBANDS, "dumpbands",   "dump bands" },
 353         { ATH5K_DEBUG_TRACE,    "trace",        "trace function calls" },
 354         { ATH5K_DEBUG_ANY,      "all",          "show all debug levels" },
 355 };
 356
 357 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
 358                                    size_t count, loff_t *ppos)
 359 {
 360         struct ath5k_softc *sc = file->private_data;
 361         char buf[700];
 362         unsigned int len = 0;
 363         unsigned int i;
 364
 365         len += snprintf(buf+len, sizeof(buf)-len,
 366                 "DEBUG LEVEL: 0x%08x\n\n", sc->debug.level);
 367
 368         for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
 369                 len += snprintf(buf+len, sizeof(buf)-len,
 370                         "%10s %c 0x%08x - %s\n", dbg_info[i].name,
 371                         sc->debug.level & dbg_info[i].level ? '+' : ' ',
 372                         dbg_info[i].level, dbg_info[i].desc);
 373         }
 374         len += snprintf(buf+len, sizeof(buf)-len,
 375                 "%10s %c 0x%08x - %s\n", dbg_info[i].name,
 376                 sc->debug.level == dbg_info[i].level ? '+' : ' ',
 377                 dbg_info[i].level, dbg_info[i].desc);
 378
 379         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 380 }
 381
 382 static ssize_t write_file_debug(struct file *file,
 383                                  const char __user *userbuf,
 384                                  size_t count, loff_t *ppos)
 385 {
 386         struct ath5k_softc *sc = file->private_data;
 387         unsigned int i;
 388         char buf[20];
 389
 390         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 391                 return -EFAULT;
 392
 393         for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
 394                 if (strncmp(buf, dbg_info[i].name,
 395                                         strlen(dbg_info[i].name)) == 0) {
 396                         sc->debug.level ^= dbg_info[i].level; /* toggle bit */
 397                         break;
 398                 }
 399         }
 400         return count;
 401 }
 402
 403 static const struct file_operations fops_debug = {
 404         .read = read_file_debug,
 405         .write = write_file_debug,
 406         .open = ath5k_debugfs_open,
 407         .owner = THIS_MODULE,
 408 };
 409
 410
 411 /* init */
 412
 413 void
 414 ath5k_debug_init(void)
 415 {
 416         ath5k_global_debugfs = debugfs_create_dir("ath5k", NULL);
 417 }
 418
 419 void
 420 ath5k_debug_init_device(struct ath5k_softc *sc)
 421 {
 422         sc->debug.level = ath5k_debug;
 423
 424         sc->debug.debugfs_phydir = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
 425                                 ath5k_global_debugfs);
 426
 427         sc->debug.debugfs_debug = debugfs_create_file("debug", S_IWUSR | S_IRUGO,
 428                                 sc->debug.debugfs_phydir, sc, &fops_debug);
 429
 430         sc->debug.debugfs_registers = debugfs_create_file("registers", S_IRUGO,
 431                                 sc->debug.debugfs_phydir, sc, &fops_registers);
 432
 433         sc->debug.debugfs_tsf = debugfs_create_file("tsf", S_IWUSR | S_IRUGO,
 434                                 sc->debug.debugfs_phydir, sc, &fops_tsf);
 435
 436         sc->debug.debugfs_beacon = debugfs_create_file("beacon", S_IWUSR | S_IRUGO,
 437                                 sc->debug.debugfs_phydir, sc, &fops_beacon);
 438
 439         sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,
 440                                 sc->debug.debugfs_phydir, sc, &fops_reset);
 441 }
 442
 443 void
 444 ath5k_debug_finish(void)
 445 {
 446         debugfs_remove(ath5k_global_debugfs);
 447 }
 448
 449 void
 450 ath5k_debug_finish_device(struct ath5k_softc *sc)
 451 {
 452         debugfs_remove(sc->debug.debugfs_debug);
 453         debugfs_remove(sc->debug.debugfs_registers);
 454         debugfs_remove(sc->debug.debugfs_tsf);
 455         debugfs_remove(sc->debug.debugfs_beacon);
 456         debugfs_remove(sc->debug.debugfs_reset);
 457         debugfs_remove(sc->debug.debugfs_phydir);
 458 }
 459
 460
 461 /* functions used in other places */
 462
 463 void
 464 ath5k_debug_dump_bands(struct ath5k_softc *sc)
 465 {
 466         unsigned int b, i;
 467
 468         if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPBANDS)))
 469                 return;
 470
 471         BUG_ON(!sc->sbands);
 472
 473         for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
 474                 struct ieee80211_supported_band *band = &sc->sbands[b];
 475                 char bname[5];
 476                 switch (band->band) {
 477                 case IEEE80211_BAND_2GHZ:
 478                         strcpy(bname, "2 GHz");
 479                         break;
 480                 case IEEE80211_BAND_5GHZ:
 481                         strcpy(bname, "5 GHz");
 482                         break;
 483                 default:
 484                         printk(KERN_DEBUG "Band not supported: %d\n",
 485                                 band->band);
 486                         return;
 487                 }
 488                 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
 489                                 band->n_channels, band->n_bitrates);
 490                 printk(KERN_DEBUG " channels:\n");
 491                 for (i = 0; i < band->n_channels; i++)
 492                         printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
 493                                         ieee80211_frequency_to_channel(
 494                                                 band->channels[i].center_freq),
 495                                         band->channels[i].center_freq,
 496                                         band->channels[i].hw_value,
 497                                         band->channels[i].flags);
 498                 printk(KERN_DEBUG " rates:\n");
 499                 for (i = 0; i < band->n_bitrates; i++)
 500                         printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
 501                                         band->bitrates[i].bitrate,
 502                                         band->bitrates[i].hw_value,
 503                                         band->bitrates[i].flags,
 504                                         band->bitrates[i].hw_value_short);
 505         }
 506 }
 507
 508 static inline void
 509 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
 510                        struct ath5k_rx_status *rs)
 511 {
 512         struct ath5k_desc *ds = bf->desc;
 513         struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
 514
 515         printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
 516                 ds, (unsigned long long)bf->daddr,
 517                 ds->ds_link, ds->ds_data,
 518                 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
 519                 rd->u.rx_stat.rx_status_0, rd->u.rx_stat.rx_status_0,
 520                 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
 521 }
 522
 523 void
 524 ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah)
 525 {
 526         struct ath5k_desc *ds;
 527         struct ath5k_buf *bf;
 528         struct ath5k_rx_status rs = {};
 529         int status;
 530
 531         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
 532                 return;
 533
 534         printk(KERN_DEBUG "rx queue %x, link %p\n",
 535                 ath5k_hw_get_rxdp(ah), sc->rxlink);
 536
 537         spin_lock_bh(&sc->rxbuflock);
 538         list_for_each_entry(bf, &sc->rxbuf, list) {
 539                 ds = bf->desc;
 540                 status = ah->ah_proc_rx_desc(ah, ds, &rs);
 541                 if (!status)
 542                         ath5k_debug_printrxbuf(bf, status == 0, &rs);
 543         }
 544         spin_unlock_bh(&sc->rxbuflock);
 545 }
 546
 547 void
 548 ath5k_debug_dump_skb(struct ath5k_softc *sc,
 549                         struct sk_buff *skb, const char *prefix, int tx)
 550 {
 551         char buf[16];
 552
 553         if (likely(!((tx && (sc->debug.level & ATH5K_DEBUG_DUMP_TX)) ||
 554                      (!tx && (sc->debug.level & ATH5K_DEBUG_DUMP_RX)))))
 555                 return;
 556
 557         snprintf(buf, sizeof(buf), "%s %s", wiphy_name(sc->hw->wiphy), prefix);
 558
 559         print_hex_dump_bytes(buf, DUMP_PREFIX_NONE, skb->data,
 560                 min(200U, skb->len));
 561
 562         printk(KERN_DEBUG "\n");
 563 }
 564
 565 void
 566 ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf)
 567 {
 568         struct ath5k_desc *ds = bf->desc;
 569         struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
 570         struct ath5k_tx_status ts = {};
 571         int done;
 572
 573         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
 574                 return;
 575
 576         done = sc->ah->ah_proc_tx_desc(sc->ah, bf->desc, &ts);
 577
 578         printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
 579                 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
 580                 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
 581                 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
 582                 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
 583                 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
 584 }
 585
 586 #endif /* ifdef CONFIG_ATH5K_DEBUG */