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         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 243 }
 244
 245 static ssize_t write_file_beacon(struct file *file,
 246                                  const char __user *userbuf,
 247                                  size_t count, loff_t *ppos)
 248 {
 249         struct ath5k_softc *sc = file->private_data;
 250         struct ath5k_hw *ah = sc->ah;
 251         char buf[20];
 252
 253         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 254                 return -EFAULT;
 255
 256         if (strncmp(buf, "disable", 7) == 0) {
 257                 AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
 258                 printk(KERN_INFO "debugfs disable beacons\n");
 259         } else if (strncmp(buf, "enable", 6) == 0) {
 260                 AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
 261                 printk(KERN_INFO "debugfs enable beacons\n");
 262         }
 263         return count;
 264 }
 265
 266 static const struct file_operations fops_beacon = {
 267         .read = read_file_beacon,
 268         .write = write_file_beacon,
 269         .open = ath5k_debugfs_open,
 270         .owner = THIS_MODULE,
 271 };
 272
 273
 274 /* debugfs: reset */
 275
 276 static ssize_t write_file_reset(struct file *file,
 277                                  const char __user *userbuf,
 278                                  size_t count, loff_t *ppos)
 279 {
 280         struct ath5k_softc *sc = file->private_data;
 281         ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "debug file triggered reset\n");
 282         tasklet_schedule(&sc->restq);
 283         return count;
 284 }
 285
 286 static const struct file_operations fops_reset = {
 287         .write = write_file_reset,
 288         .open = ath5k_debugfs_open,
 289         .owner = THIS_MODULE,
 290 };
 291
 292
 293 /* debugfs: debug level */
 294
 295 static const struct {
 296         enum ath5k_debug_level level;
 297         const char *name;
 298         const char *desc;
 299 } dbg_info[] = {
 300         { ATH5K_DEBUG_RESET,    "reset",        "reset and initialization" },
 301         { ATH5K_DEBUG_INTR,     "intr",         "interrupt handling" },
 302         { ATH5K_DEBUG_MODE,     "mode",         "mode init/setup" },
 303         { ATH5K_DEBUG_XMIT,     "xmit",         "basic xmit operation" },
 304         { ATH5K_DEBUG_BEACON,   "beacon",       "beacon handling" },
 305         { ATH5K_DEBUG_CALIBRATE, "calib",       "periodic calibration" },
 306         { ATH5K_DEBUG_TXPOWER,  "txpower",      "transmit power setting" },
 307         { ATH5K_DEBUG_LED,      "led",          "LED management" },
 308         { ATH5K_DEBUG_DUMP_RX,  "dumprx",       "print received skb content" },
 309         { ATH5K_DEBUG_DUMP_TX,  "dumptx",       "print transmit skb content" },
 310         { ATH5K_DEBUG_DUMPBANDS, "dumpbands",   "dump bands" },
 311         { ATH5K_DEBUG_ANI,      "ani",          "adaptive noise immunity" },
 312         { ATH5K_DEBUG_ANY,      "all",          "show all debug levels" },
 313 };
 314
 315 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
 316                                    size_t count, loff_t *ppos)
 317 {
 318         struct ath5k_softc *sc = file->private_data;
 319         char buf[700];
 320         unsigned int len = 0;
 321         unsigned int i;
 322
 323         len += snprintf(buf+len, sizeof(buf)-len,
 324                 "DEBUG LEVEL: 0x%08x\n\n", sc->debug.level);
 325
 326         for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
 327                 len += snprintf(buf+len, sizeof(buf)-len,
 328                         "%10s %c 0x%08x - %s\n", dbg_info[i].name,
 329                         sc->debug.level & dbg_info[i].level ? '+' : ' ',
 330                         dbg_info[i].level, dbg_info[i].desc);
 331         }
 332         len += snprintf(buf+len, sizeof(buf)-len,
 333                 "%10s %c 0x%08x - %s\n", dbg_info[i].name,
 334                 sc->debug.level == dbg_info[i].level ? '+' : ' ',
 335                 dbg_info[i].level, dbg_info[i].desc);
 336
 337         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 338 }
 339
 340 static ssize_t write_file_debug(struct file *file,
 341                                  const char __user *userbuf,
 342                                  size_t count, loff_t *ppos)
 343 {
 344         struct ath5k_softc *sc = file->private_data;
 345         unsigned int i;
 346         char buf[20];
 347
 348         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 349                 return -EFAULT;
 350
 351         for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
 352                 if (strncmp(buf, dbg_info[i].name,
 353                                         strlen(dbg_info[i].name)) == 0) {
 354                         sc->debug.level ^= dbg_info[i].level; /* toggle bit */
 355                         break;
 356                 }
 357         }
 358         return count;
 359 }
 360
 361 static const struct file_operations fops_debug = {
 362         .read = read_file_debug,
 363         .write = write_file_debug,
 364         .open = ath5k_debugfs_open,
 365         .owner = THIS_MODULE,
 366 };
 367
 368
 369 /* debugfs: antenna */
 370
 371 static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
 372                                    size_t count, loff_t *ppos)
 373 {
 374         struct ath5k_softc *sc = file->private_data;
 375         char buf[700];
 376         unsigned int len = 0;
 377         unsigned int i;
 378         unsigned int v;
 379
 380         len += snprintf(buf+len, sizeof(buf)-len, "antenna mode\t%d\n",
 381                 sc->ah->ah_ant_mode);
 382         len += snprintf(buf+len, sizeof(buf)-len, "default antenna\t%d\n",
 383                 sc->ah->ah_def_ant);
 384         len += snprintf(buf+len, sizeof(buf)-len, "tx antenna\t%d\n",
 385                 sc->ah->ah_tx_ant);
 386
 387         len += snprintf(buf+len, sizeof(buf)-len, "\nANTENNA\t\tRX\tTX\n");
 388         for (i = 1; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
 389                 len += snprintf(buf+len, sizeof(buf)-len,
 390                         "[antenna %d]\t%d\t%d\n",
 391                         i, sc->stats.antenna_rx[i], sc->stats.antenna_tx[i]);
 392         }
 393         len += snprintf(buf+len, sizeof(buf)-len, "[invalid]\t%d\t%d\n",
 394                         sc->stats.antenna_rx[0], sc->stats.antenna_tx[0]);
 395
 396         v = ath5k_hw_reg_read(sc->ah, AR5K_DEFAULT_ANTENNA);
 397         len += snprintf(buf+len, sizeof(buf)-len,
 398                         "\nAR5K_DEFAULT_ANTENNA\t0x%08x\n", v);
 399
 400         v = ath5k_hw_reg_read(sc->ah, AR5K_STA_ID1);
 401         len += snprintf(buf+len, sizeof(buf)-len,
 402                 "AR5K_STA_ID1_DEFAULT_ANTENNA\t%d\n",
 403                 (v & AR5K_STA_ID1_DEFAULT_ANTENNA) != 0);
 404         len += snprintf(buf+len, sizeof(buf)-len,
 405                 "AR5K_STA_ID1_DESC_ANTENNA\t%d\n",
 406                 (v & AR5K_STA_ID1_DESC_ANTENNA) != 0);
 407         len += snprintf(buf+len, sizeof(buf)-len,
 408                 "AR5K_STA_ID1_RTS_DEF_ANTENNA\t%d\n",
 409                 (v & AR5K_STA_ID1_RTS_DEF_ANTENNA) != 0);
 410         len += snprintf(buf+len, sizeof(buf)-len,
 411                 "AR5K_STA_ID1_SELFGEN_DEF_ANT\t%d\n",
 412                 (v & AR5K_STA_ID1_SELFGEN_DEF_ANT) != 0);
 413
 414         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_AGCCTL);
 415         len += snprintf(buf+len, sizeof(buf)-len,
 416                 "\nAR5K_PHY_AGCCTL_OFDM_DIV_DIS\t%d\n",
 417                 (v & AR5K_PHY_AGCCTL_OFDM_DIV_DIS) != 0);
 418
 419         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_RESTART);
 420         len += snprintf(buf+len, sizeof(buf)-len,
 421                 "AR5K_PHY_RESTART_DIV_GC\t\t%x\n",
 422                 (v & AR5K_PHY_RESTART_DIV_GC) >> AR5K_PHY_RESTART_DIV_GC_S);
 423
 424         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_FAST_ANT_DIV);
 425         len += snprintf(buf+len, sizeof(buf)-len,
 426                 "AR5K_PHY_FAST_ANT_DIV_EN\t%d\n",
 427                 (v & AR5K_PHY_FAST_ANT_DIV_EN) != 0);
 428
 429         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_ANT_SWITCH_TABLE_0);
 430         len += snprintf(buf+len, sizeof(buf)-len,
 431                         "\nAR5K_PHY_ANT_SWITCH_TABLE_0\t0x%08x\n", v);
 432         v = ath5k_hw_reg_read(sc->ah, AR5K_PHY_ANT_SWITCH_TABLE_1);
 433         len += snprintf(buf+len, sizeof(buf)-len,
 434                         "AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v);
 435
 436         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 437 }
 438
 439 static ssize_t write_file_antenna(struct file *file,
 440                                  const char __user *userbuf,
 441                                  size_t count, loff_t *ppos)
 442 {
 443         struct ath5k_softc *sc = file->private_data;
 444         unsigned int i;
 445         char buf[20];
 446
 447         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 448                 return -EFAULT;
 449
 450         if (strncmp(buf, "diversity", 9) == 0) {
 451                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_DEFAULT);
 452                 printk(KERN_INFO "ath5k debug: enable diversity\n");
 453         } else if (strncmp(buf, "fixed-a", 7) == 0) {
 454                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_A);
 455                 printk(KERN_INFO "ath5k debugfs: fixed antenna A\n");
 456         } else if (strncmp(buf, "fixed-b", 7) == 0) {
 457                 ath5k_hw_set_antenna_mode(sc->ah, AR5K_ANTMODE_FIXED_B);
 458                 printk(KERN_INFO "ath5k debug: fixed antenna B\n");
 459         } else if (strncmp(buf, "clear", 5) == 0) {
 460                 for (i = 0; i < ARRAY_SIZE(sc->stats.antenna_rx); i++) {
 461                         sc->stats.antenna_rx[i] = 0;
 462                         sc->stats.antenna_tx[i] = 0;
 463                 }
 464                 printk(KERN_INFO "ath5k debug: cleared antenna stats\n");
 465         }
 466         return count;
 467 }
 468
 469 static const struct file_operations fops_antenna = {
 470         .read = read_file_antenna,
 471         .write = write_file_antenna,
 472         .open = ath5k_debugfs_open,
 473         .owner = THIS_MODULE,
 474 };
 475
 476
 477 /* debugfs: frameerrors */
 478
 479 static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
 480                                    size_t count, loff_t *ppos)
 481 {
 482         struct ath5k_softc *sc = file->private_data;
 483         struct ath5k_statistics *st = &sc->stats;
 484         char buf[700];
 485         unsigned int len = 0;
 486         int i;
 487
 488         len += snprintf(buf+len, sizeof(buf)-len,
 489                         "RX\n---------------------\n");
 490         len += snprintf(buf+len, sizeof(buf)-len, "CRC\t%d\t(%d%%)\n",
 491                         st->rxerr_crc,
 492                         st->rx_all_count > 0 ?
 493                                 st->rxerr_crc*100/st->rx_all_count : 0);
 494         len += snprintf(buf+len, sizeof(buf)-len, "PHY\t%d\t(%d%%)\n",
 495                         st->rxerr_phy,
 496                         st->rx_all_count > 0 ?
 497                                 st->rxerr_phy*100/st->rx_all_count : 0);
 498         for (i = 0; i < 32; i++) {
 499                 if (st->rxerr_phy_code[i])
 500                         len += snprintf(buf+len, sizeof(buf)-len,
 501                                 " phy_err[%d]\t%d\n",
 502                                 i, st->rxerr_phy_code[i]);
 503         }
 504
 505         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
 506                         st->rxerr_fifo,
 507                         st->rx_all_count > 0 ?
 508                                 st->rxerr_fifo*100/st->rx_all_count : 0);
 509         len += snprintf(buf+len, sizeof(buf)-len, "decrypt\t%d\t(%d%%)\n",
 510                         st->rxerr_decrypt,
 511                         st->rx_all_count > 0 ?
 512                                 st->rxerr_decrypt*100/st->rx_all_count : 0);
 513         len += snprintf(buf+len, sizeof(buf)-len, "MIC\t%d\t(%d%%)\n",
 514                         st->rxerr_mic,
 515                         st->rx_all_count > 0 ?
 516                                 st->rxerr_mic*100/st->rx_all_count : 0);
 517         len += snprintf(buf+len, sizeof(buf)-len, "process\t%d\t(%d%%)\n",
 518                         st->rxerr_proc,
 519                         st->rx_all_count > 0 ?
 520                                 st->rxerr_proc*100/st->rx_all_count : 0);
 521         len += snprintf(buf+len, sizeof(buf)-len, "jumbo\t%d\t(%d%%)\n",
 522                         st->rxerr_jumbo,
 523                         st->rx_all_count > 0 ?
 524                                 st->rxerr_jumbo*100/st->rx_all_count : 0);
 525         len += snprintf(buf+len, sizeof(buf)-len, "[RX all\t%d]\n",
 526                         st->rx_all_count);
 527
 528         len += snprintf(buf+len, sizeof(buf)-len,
 529                         "\nTX\n---------------------\n");
 530         len += snprintf(buf+len, sizeof(buf)-len, "retry\t%d\t(%d%%)\n",
 531                         st->txerr_retry,
 532                         st->tx_all_count > 0 ?
 533                                 st->txerr_retry*100/st->tx_all_count : 0);
 534         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
 535                         st->txerr_fifo,
 536                         st->tx_all_count > 0 ?
 537                                 st->txerr_fifo*100/st->tx_all_count : 0);
 538         len += snprintf(buf+len, sizeof(buf)-len, "filter\t%d\t(%d%%)\n",
 539                         st->txerr_filt,
 540                         st->tx_all_count > 0 ?
 541                                 st->txerr_filt*100/st->tx_all_count : 0);
 542         len += snprintf(buf+len, sizeof(buf)-len, "[TX all\t%d]\n",
 543                         st->tx_all_count);
 544
 545         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 546 }
 547
 548 static ssize_t write_file_frameerrors(struct file *file,
 549                                  const char __user *userbuf,
 550                                  size_t count, loff_t *ppos)
 551 {
 552         struct ath5k_softc *sc = file->private_data;
 553         struct ath5k_statistics *st = &sc->stats;
 554         char buf[20];
 555
 556         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 557                 return -EFAULT;
 558
 559         if (strncmp(buf, "clear", 5) == 0) {
 560                 st->rxerr_crc = 0;
 561                 st->rxerr_phy = 0;
 562                 st->rxerr_fifo = 0;
 563                 st->rxerr_decrypt = 0;
 564                 st->rxerr_mic = 0;
 565                 st->rxerr_proc = 0;
 566                 st->rxerr_jumbo = 0;
 567                 st->rx_all_count = 0;
 568                 st->txerr_retry = 0;
 569                 st->txerr_fifo = 0;
 570                 st->txerr_filt = 0;
 571                 st->tx_all_count = 0;
 572                 printk(KERN_INFO "ath5k debug: cleared frameerrors stats\n");
 573         }
 574         return count;
 575 }
 576
 577 static const struct file_operations fops_frameerrors = {
 578         .read = read_file_frameerrors,
 579         .write = write_file_frameerrors,
 580         .open = ath5k_debugfs_open,
 581         .owner = THIS_MODULE,
 582 };
 583
 584
 585 /* debugfs: ani */
 586
 587 static ssize_t read_file_ani(struct file *file, char __user *user_buf,
 588                                    size_t count, loff_t *ppos)
 589 {
 590         struct ath5k_softc *sc = file->private_data;
 591         struct ath5k_statistics *st = &sc->stats;
 592         struct ath5k_ani_state *as = &sc->ani_state;
 593
 594         char buf[700];
 595         unsigned int len = 0;
 596
 597         len += snprintf(buf+len, sizeof(buf)-len,
 598                         "HW has PHY error counters:\t%s\n",
 599                         sc->ah->ah_capabilities.cap_has_phyerr_counters ?
 600                         "yes" : "no");
 601         len += snprintf(buf+len, sizeof(buf)-len,
 602                         "HW max spur immunity level:\t%d\n",
 603                         as->max_spur_level);
 604         len += snprintf(buf+len, sizeof(buf)-len,
 605                 "\nANI state\n--------------------------------------------\n");
 606         len += snprintf(buf+len, sizeof(buf)-len, "operating mode:\t\t\t");
 607         switch (as->ani_mode) {
 608         case ATH5K_ANI_MODE_OFF:
 609                 len += snprintf(buf+len, sizeof(buf)-len, "OFF\n");
 610                 break;
 611         case ATH5K_ANI_MODE_MANUAL_LOW:
 612                 len += snprintf(buf+len, sizeof(buf)-len,
 613                         "MANUAL LOW\n");
 614                 break;
 615         case ATH5K_ANI_MODE_MANUAL_HIGH:
 616                 len += snprintf(buf+len, sizeof(buf)-len,
 617                         "MANUAL HIGH\n");
 618                 break;
 619         case ATH5K_ANI_MODE_AUTO:
 620                 len += snprintf(buf+len, sizeof(buf)-len, "AUTO\n");
 621                 break;
 622         default:
 623                 len += snprintf(buf+len, sizeof(buf)-len,
 624                         "??? (not good)\n");
 625                 break;
 626         }
 627         len += snprintf(buf+len, sizeof(buf)-len,
 628                         "noise immunity level:\t\t%d\n",
 629                         as->noise_imm_level);
 630         len += snprintf(buf+len, sizeof(buf)-len,
 631                         "spur immunity level:\t\t%d\n",
 632                         as->spur_level);
 633         len += snprintf(buf+len, sizeof(buf)-len, "firstep level:\t\t\t%d\n",
 634                         as->firstep_level);
 635         len += snprintf(buf+len, sizeof(buf)-len,
 636                         "OFDM weak signal detection:\t%s\n",
 637                         as->ofdm_weak_sig ? "on" : "off");
 638         len += snprintf(buf+len, sizeof(buf)-len,
 639                         "CCK weak signal detection:\t%s\n",
 640                         as->cck_weak_sig ? "on" : "off");
 641
 642         len += snprintf(buf+len, sizeof(buf)-len,
 643                         "\nMIB INTERRUPTS:\t\t%u\n",
 644                         st->mib_intr);
 645         len += snprintf(buf+len, sizeof(buf)-len,
 646                         "beacon RSSI average:\t%d\n",
 647                         sc->ah->ah_beacon_rssi_avg.avg);
 648         len += snprintf(buf+len, sizeof(buf)-len, "profcnt tx\t\t%u\t(%d%%)\n",
 649                         as->pfc_tx,
 650                         as->pfc_cycles > 0 ?
 651                         as->pfc_tx*100/as->pfc_cycles : 0);
 652         len += snprintf(buf+len, sizeof(buf)-len, "profcnt rx\t\t%u\t(%d%%)\n",
 653                         as->pfc_rx,
 654                         as->pfc_cycles > 0 ?
 655                         as->pfc_rx*100/as->pfc_cycles : 0);
 656         len += snprintf(buf+len, sizeof(buf)-len, "profcnt busy\t\t%u\t(%d%%)\n",
 657                         as->pfc_busy,
 658                         as->pfc_cycles > 0 ?
 659                         as->pfc_busy*100/as->pfc_cycles : 0);
 660         len += snprintf(buf+len, sizeof(buf)-len, "profcnt cycles\t\t%u\n",
 661                         as->pfc_cycles);
 662         len += snprintf(buf+len, sizeof(buf)-len,
 663                         "listen time\t\t%d\tlast: %d\n",
 664                         as->listen_time, as->last_listen);
 665         len += snprintf(buf+len, sizeof(buf)-len,
 666                         "OFDM errors\t\t%u\tlast: %u\tsum: %u\n",
 667                         as->ofdm_errors, as->last_ofdm_errors,
 668                         as->sum_ofdm_errors);
 669         len += snprintf(buf+len, sizeof(buf)-len,
 670                         "CCK errors\t\t%u\tlast: %u\tsum: %u\n",
 671                         as->cck_errors, as->last_cck_errors,
 672                         as->sum_cck_errors);
 673         len += snprintf(buf+len, sizeof(buf)-len,
 674                         "AR5K_PHYERR_CNT1\t%x\t(=%d)\n",
 675                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT1),
 676                         ATH5K_ANI_OFDM_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
 677                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT1)));
 678         len += snprintf(buf+len, sizeof(buf)-len,
 679                         "AR5K_PHYERR_CNT2\t%x\t(=%d)\n",
 680                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT2),
 681                         ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
 682                         ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT2)));
 683
 684         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 685 }
 686
 687 static ssize_t write_file_ani(struct file *file,
 688                                  const char __user *userbuf,
 689                                  size_t count, loff_t *ppos)
 690 {
 691         struct ath5k_softc *sc = file->private_data;
 692         char buf[20];
 693
 694         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 695                 return -EFAULT;
 696
 697         if (strncmp(buf, "sens-low", 8) == 0) {
 698                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_MANUAL_HIGH);
 699         } else if (strncmp(buf, "sens-high", 9) == 0) {
 700                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_MANUAL_LOW);
 701         } else if (strncmp(buf, "ani-off", 7) == 0) {
 702                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_OFF);
 703         } else if (strncmp(buf, "ani-on", 6) == 0) {
 704                 ath5k_ani_init(sc->ah, ATH5K_ANI_MODE_AUTO);
 705         } else if (strncmp(buf, "noise-low", 9) == 0) {
 706                 ath5k_ani_set_noise_immunity_level(sc->ah, 0);
 707         } else if (strncmp(buf, "noise-high", 10) == 0) {
 708                 ath5k_ani_set_noise_immunity_level(sc->ah,
 709                                                    ATH5K_ANI_MAX_NOISE_IMM_LVL);
 710         } else if (strncmp(buf, "spur-low", 8) == 0) {
 711                 ath5k_ani_set_spur_immunity_level(sc->ah, 0);
 712         } else if (strncmp(buf, "spur-high", 9) == 0) {
 713                 ath5k_ani_set_spur_immunity_level(sc->ah,
 714                                                   sc->ani_state.max_spur_level);
 715         } else if (strncmp(buf, "fir-low", 7) == 0) {
 716                 ath5k_ani_set_firstep_level(sc->ah, 0);
 717         } else if (strncmp(buf, "fir-high", 8) == 0) {
 718                 ath5k_ani_set_firstep_level(sc->ah, ATH5K_ANI_MAX_FIRSTEP_LVL);
 719         } else if (strncmp(buf, "ofdm-off", 8) == 0) {
 720                 ath5k_ani_set_ofdm_weak_signal_detection(sc->ah, false);
 721         } else if (strncmp(buf, "ofdm-on", 7) == 0) {
 722                 ath5k_ani_set_ofdm_weak_signal_detection(sc->ah, true);
 723         } else if (strncmp(buf, "cck-off", 7) == 0) {
 724                 ath5k_ani_set_cck_weak_signal_detection(sc->ah, false);
 725         } else if (strncmp(buf, "cck-on", 6) == 0) {
 726                 ath5k_ani_set_cck_weak_signal_detection(sc->ah, true);
 727         }
 728         return count;
 729 }
 730
 731 static const struct file_operations fops_ani = {
 732         .read = read_file_ani,
 733         .write = write_file_ani,
 734         .open = ath5k_debugfs_open,
 735         .owner = THIS_MODULE,
 736 };
 737
 738
 739 /* debugfs: queues etc */
 740
 741 static ssize_t read_file_queue(struct file *file, char __user *user_buf,
 742                                    size_t count, loff_t *ppos)
 743 {
 744         struct ath5k_softc *sc = file->private_data;
 745         char buf[700];
 746         unsigned int len = 0;
 747
 748         struct ath5k_txq *txq;
 749         struct ath5k_buf *bf, *bf0;
 750         int i, n = 0;
 751
 752         len += snprintf(buf+len, sizeof(buf)-len,
 753                         "available txbuffers: %d\n", sc->txbuf_len);
 754
 755         for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) {
 756                 txq = &sc->txqs[i];
 757
 758                 len += snprintf(buf+len, sizeof(buf)-len,
 759                         "%02d: %ssetup\n", i, txq->setup ? "" : "not ");
 760
 761                 if (!txq->setup)
 762                         continue;
 763
 764                 list_for_each_entry_safe(bf, bf0, &txq->q, list)
 765                         n++;
 766                 len += snprintf(buf+len, sizeof(buf)-len, "  len: %d\n", n);
 767         }
 768
 769         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 770 }
 771
 772 static ssize_t write_file_queue(struct file *file,
 773                                  const char __user *userbuf,
 774                                  size_t count, loff_t *ppos)
 775 {
 776         struct ath5k_softc *sc = file->private_data;
 777         char buf[20];
 778
 779         if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
 780                 return -EFAULT;
 781
 782         if (strncmp(buf, "start", 5) == 0)
 783                 ieee80211_wake_queues(sc->hw);
 784         else if (strncmp(buf, "stop", 4) == 0)
 785                 ieee80211_stop_queues(sc->hw);
 786
 787         return count;
 788 }
 789
 790
 791 static const struct file_operations fops_queue = {
 792         .read = read_file_queue,
 793         .write = write_file_queue,
 794         .open = ath5k_debugfs_open,
 795         .owner = THIS_MODULE,
 796 };
 797
 798
 799 /* init */
 800
 801 void
 802 ath5k_debug_init(void)
 803 {
 804         ath5k_global_debugfs = debugfs_create_dir("ath5k", NULL);
 805 }
 806
 807 void
 808 ath5k_debug_init_device(struct ath5k_softc *sc)
 809 {
 810         sc->debug.level = ath5k_debug;
 811
 812         sc->debug.debugfs_phydir = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
 813                                 ath5k_global_debugfs);
 814
 815         sc->debug.debugfs_debug = debugfs_create_file("debug",
 816                                 S_IWUSR | S_IRUSR,
 817                                 sc->debug.debugfs_phydir, sc, &fops_debug);
 818
 819         sc->debug.debugfs_registers = debugfs_create_file("registers", S_IRUSR,
 820                                 sc->debug.debugfs_phydir, sc, &fops_registers);
 821
 822         sc->debug.debugfs_beacon = debugfs_create_file("beacon",
 823                                 S_IWUSR | S_IRUSR,
 824                                 sc->debug.debugfs_phydir, sc, &fops_beacon);
 825
 826         sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR,
 827                                 sc->debug.debugfs_phydir, sc, &fops_reset);
 828
 829         sc->debug.debugfs_antenna = debugfs_create_file("antenna",
 830                                 S_IWUSR | S_IRUSR,
 831                                 sc->debug.debugfs_phydir, sc, &fops_antenna);
 832
 833         sc->debug.debugfs_frameerrors = debugfs_create_file("frameerrors",
 834                                 S_IWUSR | S_IRUSR,
 835                                 sc->debug.debugfs_phydir, sc,
 836                                 &fops_frameerrors);
 837
 838         sc->debug.debugfs_ani = debugfs_create_file("ani",
 839                                 S_IWUSR | S_IRUSR,
 840                                 sc->debug.debugfs_phydir, sc,
 841                                 &fops_ani);
 842
 843         sc->debug.debugfs_queue = debugfs_create_file("queue",
 844                                 S_IWUSR | S_IRUSR,
 845                                 sc->debug.debugfs_phydir, sc,
 846                                 &fops_queue);
 847 }
 848
 849 void
 850 ath5k_debug_finish(void)
 851 {
 852         debugfs_remove(ath5k_global_debugfs);
 853 }
 854
 855 void
 856 ath5k_debug_finish_device(struct ath5k_softc *sc)
 857 {
 858         debugfs_remove(sc->debug.debugfs_debug);
 859         debugfs_remove(sc->debug.debugfs_registers);
 860         debugfs_remove(sc->debug.debugfs_beacon);
 861         debugfs_remove(sc->debug.debugfs_reset);
 862         debugfs_remove(sc->debug.debugfs_antenna);
 863         debugfs_remove(sc->debug.debugfs_frameerrors);
 864         debugfs_remove(sc->debug.debugfs_ani);
 865         debugfs_remove(sc->debug.debugfs_queue);
 866         debugfs_remove(sc->debug.debugfs_phydir);
 867 }
 868
 869
 870 /* functions used in other places */
 871
 872 void
 873 ath5k_debug_dump_bands(struct ath5k_softc *sc)
 874 {
 875         unsigned int b, i;
 876
 877         if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPBANDS)))
 878                 return;
 879
 880         BUG_ON(!sc->sbands);
 881
 882         for (b = 0; b < IEEE80211_NUM_BANDS; b++) {
 883                 struct ieee80211_supported_band *band = &sc->sbands[b];
 884                 char bname[6];
 885                 switch (band->band) {
 886                 case IEEE80211_BAND_2GHZ:
 887                         strcpy(bname, "2 GHz");
 888                         break;
 889                 case IEEE80211_BAND_5GHZ:
 890                         strcpy(bname, "5 GHz");
 891                         break;
 892                 default:
 893                         printk(KERN_DEBUG "Band not supported: %d\n",
 894                                 band->band);
 895                         return;
 896                 }
 897                 printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname,
 898                                 band->n_channels, band->n_bitrates);
 899                 printk(KERN_DEBUG " channels:\n");
 900                 for (i = 0; i < band->n_channels; i++)
 901                         printk(KERN_DEBUG "  %3d %d %.4x %.4x\n",
 902                                         ieee80211_frequency_to_channel(
 903                                                 band->channels[i].center_freq),
 904                                         band->channels[i].center_freq,
 905                                         band->channels[i].hw_value,
 906                                         band->channels[i].flags);
 907                 printk(KERN_DEBUG " rates:\n");
 908                 for (i = 0; i < band->n_bitrates; i++)
 909                         printk(KERN_DEBUG "  %4d %.4x %.4x %.4x\n",
 910                                         band->bitrates[i].bitrate,
 911                                         band->bitrates[i].hw_value,
 912                                         band->bitrates[i].flags,
 913                                         band->bitrates[i].hw_value_short);
 914         }
 915 }
 916
 917 static inline void
 918 ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done,
 919                        struct ath5k_rx_status *rs)
 920 {
 921         struct ath5k_desc *ds = bf->desc;
 922         struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx;
 923
 924         printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n",
 925                 ds, (unsigned long long)bf->daddr,
 926                 ds->ds_link, ds->ds_data,
 927                 rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1,
 928                 rd->u.rx_stat.rx_status_0, rd->u.rx_stat.rx_status_1,
 929                 !done ? ' ' : (rs->rs_status == 0) ? '*' : '!');
 930 }
 931
 932 void
 933 ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah)
 934 {
 935         struct ath5k_desc *ds;
 936         struct ath5k_buf *bf;
 937         struct ath5k_rx_status rs = {};
 938         int status;
 939
 940         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
 941                 return;
 942
 943         printk(KERN_DEBUG "rxdp %x, rxlink %p\n",
 944                 ath5k_hw_get_rxdp(ah), sc->rxlink);
 945
 946         spin_lock_bh(&sc->rxbuflock);
 947         list_for_each_entry(bf, &sc->rxbuf, list) {
 948                 ds = bf->desc;
 949                 status = ah->ah_proc_rx_desc(ah, ds, &rs);
 950                 if (!status)
 951                         ath5k_debug_printrxbuf(bf, status == 0, &rs);
 952         }
 953         spin_unlock_bh(&sc->rxbuflock);
 954 }
 955
 956 void
 957 ath5k_debug_dump_skb(struct ath5k_softc *sc,
 958                         struct sk_buff *skb, const char *prefix, int tx)
 959 {
 960         char buf[16];
 961
 962         if (likely(!((tx && (sc->debug.level & ATH5K_DEBUG_DUMP_TX)) ||
 963                      (!tx && (sc->debug.level & ATH5K_DEBUG_DUMP_RX)))))
 964                 return;
 965
 966         snprintf(buf, sizeof(buf), "%s %s", wiphy_name(sc->hw->wiphy), prefix);
 967
 968         print_hex_dump_bytes(buf, DUMP_PREFIX_NONE, skb->data,
 969                 min(200U, skb->len));
 970
 971         printk(KERN_DEBUG "\n");
 972 }
 973
 974 void
 975 ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf)
 976 {
 977         struct ath5k_desc *ds = bf->desc;
 978         struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212;
 979         struct ath5k_tx_status ts = {};
 980         int done;
 981
 982         if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
 983                 return;
 984
 985         done = sc->ah->ah_proc_tx_desc(sc->ah, bf->desc, &ts);
 986
 987         printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x "
 988                 "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link,
 989                 ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1,
 990                 td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3,
 991                 td->tx_stat.tx_status_0, td->tx_stat.tx_status_1,
 992                 done ? ' ' : (ts.ts_status == 0) ? '*' : '!');
 993 }
 994
 995 #endif /* ifdef CONFIG_ATH5K_DEBUG */