Pileus Git - ~andy/linux/blob - 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
  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         const 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 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
 143 static void *reg_start(struct seq_file *seq, loff_t *pos)
 144 {
 145         return *pos < ARRAY_SIZE(regs) ? (void *)&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) ? (void *)&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: beacons */
 197
 198 static 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
 244 static 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
 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 };
 271
 272
 273 /* debugfs: reset */
 274
 275 static 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
 284 static const struct file_operations fops_reset = {
 285         .write = write_file_reset,
 286         .open = ath5k_debugfs_open,
 287         .owner = THIS_MODULE,
 288 };
 289
 290
 291 /* debugfs: debug level */
 292
 293 static 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
 313 static 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
 338 static 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; /* toggle bit */
 353                         break;
 354                 }
 355         }
 356         return count;
 357 }
 358
 359 static 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 /* debugfs: antenna */
 368
 369 static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
 370                                    size_t count, loff_t *ppos)
 371 {
 372         struct ath5k_softc *sc = file->private_data;
 373         char buf[700];
 374         unsigned int len = 0;
 375         unsigned int i;
 376         unsigned int v;
 377
 378         len += snprintf(buf+len, sizeof(buf)-len, "antenna mode\t%d\n",
 379                 sc->ah->ah_ant_mode);
 380         len += snprintf(buf+len, sizeof(buf)-len, "default antenna\t%d\n",
 381                 sc->ah->ah_def_ant);
 382         len += snprintf(buf+len, sizeof(buf)-len, "tx antenna\t%d\n",
 383                 sc->ah->ah_tx_ant);
 384
 385         len += snprintf(buf+len, sizeof(buf)-len, "\nANTENNA\t\tRX\tTX\n");
 386         for (i = 1; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
 387                 len += snprintf(buf+len, sizeof(buf)-len,
 388                         "[antenna %d]\t%d\t%d\n",
 389                         i, sc->stats.antenna_rx[i], sc->stats.antenna_tx[i]);
 390         }
 391         len += snprintf(buf+len, sizeof(buf)-len, "[invalid]\t%d\t%d\n",
 392                         sc->stats.antenna_rx[0], sc->stats.antenna_tx[0]);
 393
 394         v = ath5k_hw_reg_read(sc->ah, AR5K_DEFAULT_ANTENNA);
 395         len += snprintf(buf+len, sizeof(buf)-len,
 396                         "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
 397
 398         v = ath5k_hw_reg_read(sc->ah, AR5K_STA_ID1);
 399         len += snprintf(buf+len, sizeof(buf)-len,
 400                 "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
 401                 (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
 402         len += snprintf(buf+len, sizeof(buf)-len,
 403                 "AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
 404                 (v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
 405         len += snprintf(buf+len, sizeof(buf)-len,
 406                 "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
 407                 (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
 408         len += snprintf(buf+len, sizeof(buf)-len,
 409                 "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
 410                 (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
 411
 412         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_AGCCTL);
 413         len += snprintf(buf+len, sizeof(buf)-len,
 414                 "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
 415                 (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
 416
 417         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_RESTART);
 418         len += snprintf(buf+len, sizeof(buf)-len,
 419                 "AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
 420                 (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
 421
 422         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_FAST_ANT_DIV);
 423         len += snprintf(buf+len, sizeof(buf)-len,
 424                 "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
 425                 (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
 426
 427         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 428 }
 429
 430 static ssize_t write_file_antenna(struct file *file,
 431                                  const char __user *userbuf,
 432                                  size_t count, loff_t *ppos)
 433 {
 434         struct ath5k_softc *sc = file->private_data;
 435         unsigned int i;
 436         char buf[20];
 437
 438         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 439                 return -EFAULT;
 440
 441         if (strncmp(buf, "diversity", 9) == 0) {
 442                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_DEFAULT);
 443                 printk(KERN_INFO "ath5k debug: enable diversity\n");
 444         } else if (strncmp(buf, "fixed-a", 7) == 0) {
 445                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_A);
 446                 printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
 447         } else if (strncmp(buf, "fixed-b", 7) == 0) {
 448                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_B);
 449                 printk(KERN_INFO "ath5k debug: fixed antenna B\n");
 450         } else if (strncmp(buf, "clear", 5) == 0) {
 451                 for (i = 0; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
 452                         sc->stats.antenna_rx[i] = 0;
 453                         sc->stats.antenna_tx[i] = 0;
 454                 }
 455                 printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
 456         }
 457         return count;
 458 }
 459
 460 static const struct file_operations fops_antenna = {
 461         .read = read_file_antenna,
 462         .write = write_file_antenna,
 463         .open = ath5k_debugfs_open,
 464         .owner = THIS_MODULE,
 465 };
 466
 467
 468 /* debugfs: frameerrors */
 469
 470 static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
 471                                    size_t count, loff_t *ppos)
 472 {
 473         struct ath5k_softc *sc = file->private_data;
 474         struct ath5k_statistics *st = &sc->stats;
 475         char buf[700];
 476         unsigned int len = 0;
 477
 478         len += snprintf(buf+len, sizeof(buf)-len,
 479                         "RX\n---------------------\n");
 480         len += snprintf(buf+len, sizeof(buf)-len, "CRC\t%d\t(%d%%)\n",
 481                         st->rxerr_crc,
 482                         st->rx_all_count > 0 ?
 483                                 st->rxerr_crc*100/st->rx_all_count : 0);
 484         len += snprintf(buf+len, sizeof(buf)-len, "PHY\t%d\t(%d%%)\n",
 485                         st->rxerr_phy,
 486                         st->rx_all_count > 0 ?
 487                                 st->rxerr_phy*100/st->rx_all_count : 0);
 488         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
 489                         st->rxerr_fifo,
 490                         st->rx_all_count > 0 ?
 491                                 st->rxerr_fifo*100/st->rx_all_count : 0);
 492         len += snprintf(buf+len, sizeof(buf)-len, "decrypt\t%d\t(%d%%)\n",
 493                         st->rxerr_decrypt,
 494                         st->rx_all_count > 0 ?
 495                                 st->rxerr_decrypt*100/st->rx_all_count : 0);
 496         len += snprintf(buf+len, sizeof(buf)-len, "MIC\t%d\t(%d%%)\n",
 497                         st->rxerr_mic,
 498                         st->rx_all_count > 0 ?
 499                                 st->rxerr_mic*100/st->rx_all_count : 0);
 500         len += snprintf(buf+len, sizeof(buf)-len, "process\t%d\t(%d%%)\n",
 501                         st->rxerr_proc,
 502                         st->rx_all_count > 0 ?
 503                                 st->rxerr_proc*100/st->rx_all_count : 0);
 504         len += snprintf(buf+len, sizeof(buf)-len, "jumbo\t%d\t(%d%%)\n",
 505                         st->rxerr_jumbo,
 506                         st->rx_all_count > 0 ?
 507                                 st->rxerr_jumbo*100/st->rx_all_count : 0);
 508         len += snprintf(buf+len, sizeof(buf)-len, "[RX all\t%d]\n",
 509                         st->rx_all_count);
 510
 511         len += snprintf(buf+len, sizeof(buf)-len,
 512                         "\nTX\n---------------------\n");
 513         len += snprintf(buf+len, sizeof(buf)-len, "retry\t%d\t(%d%%)\n",
 514                         st->txerr_retry,
 515                         st->tx_all_count > 0 ?
 516                                 st->txerr_retry*100/st->tx_all_count : 0);
 517         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
 518                         st->txerr_fifo,
 519                         st->tx_all_count > 0 ?
 520                                 st->txerr_fifo*100/st->tx_all_count : 0);
 521         len += snprintf(buf+len, sizeof(buf)-len, "filter\t%d\t(%d%%)\n",
 522                         st->txerr_filt,
 523                         st->tx_all_count > 0 ?
 524                                 st->txerr_filt*100/st->tx_all_count : 0);
 525         len += snprintf(buf+len, sizeof(buf)-len, "[TX all\t%d]\n",
 526                         st->tx_all_count);
 527
 528         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 529 }
 530
 531 static ssize_t write_file_frameerrors(struct file *file,
 532                                  const char __user *userbuf,
 533                                  size_t count, loff_t *ppos)
 534 {
 535         struct ath5k_softc *sc = file->private_data;
 536         struct ath5k_statistics *st = &sc->stats;
 537         char buf[20];
 538
 539         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 540                 return -EFAULT;
 541
 542         if (strncmp(buf, "clear", 5) == 0) {
 543                 st->rxerr_crc = 0;
 544                 st->rxerr_phy = 0;
 545                 st->rxerr_fifo = 0;
 546                 st->rxerr_decrypt = 0;
 547                 st->rxerr_mic = 0;
 548                 st->rxerr_proc = 0;
 549                 st->rxerr_jumbo = 0;
 550                 st->rx_all_count = 0;
 551                 st->txerr_retry = 0;
 552                 st->txerr_fifo = 0;
 553                 st->txerr_filt = 0;
 554                 st->tx_all_count = 0;
 555                 printk(KERN_INFO "ath5k debug: cleared frameerrors stats\n");
 556         }
 557         return count;
 558 }
 559
 560 static const struct file_operations fops_frameerrors = {
 561         .read = read_file_frameerrors,
 562         .write = write_file_frameerrors,
 563         .open = ath5k_debugfs_open,
 564         .owner = THIS_MODULE,
 565 };
 566
 567
 568 /* init */
 569
 570 void
 571 ath5k_debug_init(void)
 572 {
 573         ath5k_global_debugfs = debugfs_create_dir("ath5k", NULL);
 574 }
 575
 576 void
 577 ath5k_debug_init_device(struct ath5k_softc *sc)
 578 {
 579         sc->debug.level = ath5k_debug;
 580
 581         sc->debug.debugfs_phydir = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
 582                                 ath5k_global_debugfs);
 583
 584         sc->debug.debugfs_debug = debugfs_create_file("debug",
 585                                 S_IWUSR | S_IRUSR,
 586                                 sc->debug.debugfs_phydir, sc, &fops_debug);
 587
 588         sc->debug.debugfs_registers = debugfs_create_file("registers", S_IRUSR,
 589                                 sc->debug.debugfs_phydir, sc, &fops_registers);
 590
 591         sc->debug.debugfs_beacon = debugfs_create_file("beacon",
 592                                 S_IWUSR | S_IRUSR,
 593                                 sc->debug.debugfs_phydir, sc, &fops_beacon);
 594
 595         sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,
 596                                 sc->debug.debugfs_phydir, sc, &fops_reset);
 597
 598         sc->debug.debugfs_antenna = debugfs_create_file("antenna",
 599                                 S_IWUSR | S_IRUSR,
 600                                 sc->debug.debugfs_phydir, sc, &fops_antenna);
 601
 602         sc->debug.debugfs_frameerrors = debugfs_create_file("frameerrors",
 603                                 S_IWUSR | S_IRUSR,
 604                                 sc->debug.debugfs_phydir, sc,
 605                                 &fops_frameerrors);
 606 }
 607
 608 void
 609 ath5k_debug_finish(void)
 610 {
 611         debugfs_remove(ath5k_global_debugfs);
 612 }
 613
 614 void
 615 ath5k_debug_finish_device(struct ath5k_softc *sc)
 616 {
 617         debugfs_remove(sc->debug.debugfs_debug);
 618         debugfs_remove(sc->debug.debugfs_registers);
 619         debugfs_remove(sc->debug.debugfs_beacon);
 620         debugfs_remove(sc->debug.debugfs_reset);
 621         debugfs_remove(sc->debug.debugfs_antenna);
 622         debugfs_remove(sc->debug.debugfs_frameerrors);
 623         debugfs_remove(sc->debug.debugfs_phydir);
 624 }
 625
 626
 627 /* functions used in other places */
 628
 629 void
 630 ath5k_debug_dump_bands(struct ath5k_softc *sc)
 631 {
 632         unsigned int b, i;
 633
 634         if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPBANDS)))
 635                 return;
 636
 637         BUG_ON(!sc->sbands);
 638
 639         for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
 640                 struct ieee80211_supported_band *band = &sc->sbands[b];
 641                 char bname[6];
 642                 switch (band->band) {
 643                 case IEEE80211_BAND_2GHZ:
 644                         strcpy(bname, "2 GHz");
 645                         break;
 646                 case IEEE80211_BAND_5GHZ:
 647                         strcpy(bname, "5 GHz");
 648                         break;
 649                 default:
 650                         printk(KERN_DEBUG "Band not supported: %d\n",
 651                                 band->band);
 652                         return;
 653                 }
 654                 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
 655                                 band->n_channels, band->n_bitrates);
 656                 printk(KERN_DEBUG " channels:\n");
 657                 for (i = 0; i < band->n_channels; i++)
 658                         printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
 659                                         ieee80211_frequency_to_channel(
 660                                                 band->channels[i].center_freq),
 661                                         band->channels[i].center_freq,
 662                                         band->channels[i].hw_value,
 663                                         band->channels[i].flags);
 664                 printk(KERN_DEBUG " rates:\n");
 665                 for (i = 0; i < band->n_bitrates; i++)
 666                         printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
 667                                         band->bitrates[i].bitrate,
 668                                         band->bitrates[i].hw_value,
 669                                         band->bitrates[i].flags,
 670                                         band->bitrates[i].hw_value_short);
 671         }
 672 }
 673
 674 static inline void
 675 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
 676                        struct ath5k_rx_status *rs)
 677 {
 678         struct ath5k_desc *ds = bf->desc;
 679         struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
 680
 681         printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
 682                 ds, (unsigned long long)bf->daddr,
 683                 ds->ds_link, ds->ds_data,
 684                 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
 685                 rd->u.rx_stat.rx_status_0, rd->u.rx_stat.rx_status_0,
 686                 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
 687 }
 688
 689 void
 690 ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah)
 691 {
 692         struct ath5k_desc *ds;
 693         struct ath5k_buf *bf;
 694         struct ath5k_rx_status rs = {};
 695         int status;
 696
 697         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
 698                 return;
 699
 700         printk(KERN_DEBUG "rx queue %x, link %p\n",
 701                 ath5k_hw_get_rxdp(ah), sc->rxlink);
 702
 703         spin_lock_bh(&sc->rxbuflock);
 704         list_for_each_entry(bf, &sc->rxbuf, list) {
 705                 ds = bf->desc;
 706                 status = ah->ah_proc_rx_desc(ah, ds, &rs);
 707                 if (!status)
 708                         ath5k_debug_printrxbuf(bf, status == 0, &rs);
 709         }
 710         spin_unlock_bh(&sc->rxbuflock);
 711 }
 712
 713 void
 714 ath5k_debug_dump_skb(struct ath5k_softc *sc,
 715                         struct sk_buff *skb, const char *prefix, int tx)
 716 {
 717         char buf[16];
 718
 719         if (likely(!((tx && (sc->debug.level & ATH5K_DEBUG_DUMP_TX)) ||
 720                      (!tx && (sc->debug.level & ATH5K_DEBUG_DUMP_RX)))))
 721                 return;
 722
 723         snprintf(buf, sizeof(buf), "%s %s", wiphy_name(sc->hw->wiphy), prefix);
 724
 725         print_hex_dump_bytes(buf, DUMP_PREFIX_NONE, skb->data,
 726                 min(200U, skb->len));
 727
 728         printk(KERN_DEBUG "\n");
 729 }
 730
 731 void
 732 ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf)
 733 {
 734         struct ath5k_desc *ds = bf->desc;
 735         struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
 736         struct ath5k_tx_status ts = {};
 737         int done;
 738
 739         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
 740                 return;
 741
 742         done = sc->ah->ah_proc_tx_desc(sc->ah, bf->desc, &ts);
 743
 744         printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
 745                 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
 746                 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
 747                 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
 748                 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
 749                 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
 750 }
 751
 752 #endif /* ifdef CONFIG_ATH5K_DEBUG */