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