drivers/net/wireless/ath/ath9k/debug.c

   1 /*
   2  * Copyright (c) 2008-2009 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <linux/slab.h>
  18 #include <linux/vmalloc.h>
  19 #include <asm/unaligned.h>
  20
  21 #include "ath9k.h"
  22
  23 #define REG_WRITE_D(_ah, _reg, _val) \
  24         ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg))
  25 #define REG_READ_D(_ah, _reg) \
  26         ath9k_hw_common(_ah)->ops->read((_ah), (_reg))
  27
  28 static int ath9k_debugfs_open(struct inode *inode, struct file *file)
  29 {
  30         file->private_data = inode->i_private;
  31         return 0;
  32 }
  33
  34 static ssize_t ath9k_debugfs_read_buf(struct file *file, char __user *user_buf,
  35                                       size_t count, loff_t *ppos)
  36 {
  37         u8 *buf = file->private_data;
  38         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
  39 }
  40
  41 static int ath9k_debugfs_release_buf(struct inode *inode, struct file *file)
  42 {
  43         vfree(file->private_data);
  44         return 0;
  45 }
  46
  47 #ifdef CONFIG_ATH_DEBUG
  48
  49 static ssize_t read_file_debug(struct file *file, char __user *user_buf,
  50                              size_t count, loff_t *ppos)
  51 {
  52         struct ath_softc *sc = file->private_data;
  53         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  54         char buf[32];
  55         unsigned int len;
  56
  57         len = sprintf(buf, "0x%08x\n", common->debug_mask);
  58         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
  59 }
  60
  61 static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
  62                              size_t count, loff_t *ppos)
  63 {
  64         struct ath_softc *sc = file->private_data;
  65         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  66         unsigned long mask;
  67         char buf[32];
  68         ssize_t len;
  69
  70         len = min(count, sizeof(buf) - 1);
  71         if (copy_from_user(buf, user_buf, len))
  72                 return -EFAULT;
  73
  74         buf[len] = '\0';
  75         if (strict_strtoul(buf, 0, &mask))
  76                 return -EINVAL;
  77
  78         common->debug_mask = mask;
  79         return count;
  80 }
  81
  82 static const struct file_operations fops_debug = {
  83         .read = read_file_debug,
  84         .write = write_file_debug,
  85         .open = ath9k_debugfs_open,
  86         .owner = THIS_MODULE,
  87         .llseek = default_llseek,
  88 };
  89
  90 #endif
  91
  92 #define DMA_BUF_LEN 1024
  93
  94 static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
  95                              size_t count, loff_t *ppos)
  96 {
  97         struct ath_softc *sc = file->private_data;
  98         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  99         char buf[32];
 100         unsigned int len;
 101
 102         len = sprintf(buf, "0x%08x\n", common->tx_chainmask);
 103         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 104 }
 105
 106 static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
 107                              size_t count, loff_t *ppos)
 108 {
 109         struct ath_softc *sc = file->private_data;
 110         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 111         unsigned long mask;
 112         char buf[32];
 113         ssize_t len;
 114
 115         len = min(count, sizeof(buf) - 1);
 116         if (copy_from_user(buf, user_buf, len))
 117                 return -EFAULT;
 118
 119         buf[len] = '\0';
 120         if (strict_strtoul(buf, 0, &mask))
 121                 return -EINVAL;
 122
 123         common->tx_chainmask = mask;
 124         sc->sc_ah->caps.tx_chainmask = mask;
 125         return count;
 126 }
 127
 128 static const struct file_operations fops_tx_chainmask = {
 129         .read = read_file_tx_chainmask,
 130         .write = write_file_tx_chainmask,
 131         .open = ath9k_debugfs_open,
 132         .owner = THIS_MODULE,
 133         .llseek = default_llseek,
 134 };
 135
 136
 137 static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
 138                              size_t count, loff_t *ppos)
 139 {
 140         struct ath_softc *sc = file->private_data;
 141         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 142         char buf[32];
 143         unsigned int len;
 144
 145         len = sprintf(buf, "0x%08x\n", common->rx_chainmask);
 146         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 147 }
 148
 149 static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
 150                              size_t count, loff_t *ppos)
 151 {
 152         struct ath_softc *sc = file->private_data;
 153         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 154         unsigned long mask;
 155         char buf[32];
 156         ssize_t len;
 157
 158         len = min(count, sizeof(buf) - 1);
 159         if (copy_from_user(buf, user_buf, len))
 160                 return -EFAULT;
 161
 162         buf[len] = '\0';
 163         if (strict_strtoul(buf, 0, &mask))
 164                 return -EINVAL;
 165
 166         common->rx_chainmask = mask;
 167         sc->sc_ah->caps.rx_chainmask = mask;
 168         return count;
 169 }
 170
 171 static const struct file_operations fops_rx_chainmask = {
 172         .read = read_file_rx_chainmask,
 173         .write = write_file_rx_chainmask,
 174         .open = ath9k_debugfs_open,
 175         .owner = THIS_MODULE,
 176         .llseek = default_llseek,
 177 };
 178
 179
 180 static ssize_t read_file_dma(struct file *file, char __user *user_buf,
 181                              size_t count, loff_t *ppos)
 182 {
 183         struct ath_softc *sc = file->private_data;
 184         struct ath_hw *ah = sc->sc_ah;
 185         char *buf;
 186         int retval;
 187         unsigned int len = 0;
 188         u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
 189         int i, qcuOffset = 0, dcuOffset = 0;
 190         u32 *qcuBase = &val[0], *dcuBase = &val[4];
 191
 192         buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL);
 193         if (!buf)
 194                 return -ENOMEM;
 195
 196         ath9k_ps_wakeup(sc);
 197
 198         REG_WRITE_D(ah, AR_MACMISC,
 199                   ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
 200                    (AR_MACMISC_MISC_OBS_BUS_1 <<
 201                     AR_MACMISC_MISC_OBS_BUS_MSB_S)));
 202
 203         len += snprintf(buf + len, DMA_BUF_LEN - len,
 204                         "Raw DMA Debug values:\n");
 205
 206         for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
 207                 if (i % 4 == 0)
 208                         len += snprintf(buf + len, DMA_BUF_LEN - len, "\n");
 209
 210                 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
 211                 len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ",
 212                                 i, val[i]);
 213         }
 214
 215         len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n");
 216         len += snprintf(buf + len, DMA_BUF_LEN - len,
 217                         "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
 218
 219         for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
 220                 if (i == 8) {
 221                         qcuOffset = 0;
 222                         qcuBase++;
 223                 }
 224
 225                 if (i == 6) {
 226                         dcuOffset = 0;
 227                         dcuBase++;
 228                 }
 229
 230                 len += snprintf(buf + len, DMA_BUF_LEN - len,
 231                         "%2d          %2x      %1x     %2x           %2x\n",
 232                         i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
 233                         (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
 234                         val[2] & (0x7 << (i * 3)) >> (i * 3),
 235                         (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
 236         }
 237
 238         len += snprintf(buf + len, DMA_BUF_LEN - len, "\n");
 239
 240         len += snprintf(buf + len, DMA_BUF_LEN - len,
 241                 "qcu_stitch state:   %2x    qcu_fetch state:        %2x\n",
 242                 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
 243         len += snprintf(buf + len, DMA_BUF_LEN - len,
 244                 "qcu_complete state: %2x    dcu_complete state:     %2x\n",
 245                 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
 246         len += snprintf(buf + len, DMA_BUF_LEN - len,
 247                 "dcu_arb state:      %2x    dcu_fp state:           %2x\n",
 248                 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
 249         len += snprintf(buf + len, DMA_BUF_LEN - len,
 250                 "chan_idle_dur:     %3d    chan_idle_dur_valid:     %1d\n",
 251                 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
 252         len += snprintf(buf + len, DMA_BUF_LEN - len,
 253                 "txfifo_valid_0:      %1d    txfifo_valid_1:          %1d\n",
 254                 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
 255         len += snprintf(buf + len, DMA_BUF_LEN - len,
 256                 "txfifo_dcu_num_0:   %2d    txfifo_dcu_num_1:       %2d\n",
 257                 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
 258
 259         len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n",
 260                         REG_READ_D(ah, AR_OBS_BUS_1));
 261         len += snprintf(buf + len, DMA_BUF_LEN - len,
 262                         "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
 263
 264         ath9k_ps_restore(sc);
 265
 266         if (len > DMA_BUF_LEN)
 267                 len = DMA_BUF_LEN;
 268
 269         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 270         kfree(buf);
 271         return retval;
 272 }
 273
 274 static const struct file_operations fops_dma = {
 275         .read = read_file_dma,
 276         .open = ath9k_debugfs_open,
 277         .owner = THIS_MODULE,
 278         .llseek = default_llseek,
 279 };
 280
 281
 282 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
 283 {
 284         if (status)
 285                 sc->debug.stats.istats.total++;
 286         if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
 287                 if (status & ATH9K_INT_RXLP)
 288                         sc->debug.stats.istats.rxlp++;
 289                 if (status & ATH9K_INT_RXHP)
 290                         sc->debug.stats.istats.rxhp++;
 291                 if (status & ATH9K_INT_BB_WATCHDOG)
 292                         sc->debug.stats.istats.bb_watchdog++;
 293         } else {
 294                 if (status & ATH9K_INT_RX)
 295                         sc->debug.stats.istats.rxok++;
 296         }
 297         if (status & ATH9K_INT_RXEOL)
 298                 sc->debug.stats.istats.rxeol++;
 299         if (status & ATH9K_INT_RXORN)
 300                 sc->debug.stats.istats.rxorn++;
 301         if (status & ATH9K_INT_TX)
 302                 sc->debug.stats.istats.txok++;
 303         if (status & ATH9K_INT_TXURN)
 304                 sc->debug.stats.istats.txurn++;
 305         if (status & ATH9K_INT_MIB)
 306                 sc->debug.stats.istats.mib++;
 307         if (status & ATH9K_INT_RXPHY)
 308                 sc->debug.stats.istats.rxphyerr++;
 309         if (status & ATH9K_INT_RXKCM)
 310                 sc->debug.stats.istats.rx_keycache_miss++;
 311         if (status & ATH9K_INT_SWBA)
 312                 sc->debug.stats.istats.swba++;
 313         if (status & ATH9K_INT_BMISS)
 314                 sc->debug.stats.istats.bmiss++;
 315         if (status & ATH9K_INT_BNR)
 316                 sc->debug.stats.istats.bnr++;
 317         if (status & ATH9K_INT_CST)
 318                 sc->debug.stats.istats.cst++;
 319         if (status & ATH9K_INT_GTT)
 320                 sc->debug.stats.istats.gtt++;
 321         if (status & ATH9K_INT_TIM)
 322                 sc->debug.stats.istats.tim++;
 323         if (status & ATH9K_INT_CABEND)
 324                 sc->debug.stats.istats.cabend++;
 325         if (status & ATH9K_INT_DTIMSYNC)
 326                 sc->debug.stats.istats.dtimsync++;
 327         if (status & ATH9K_INT_DTIM)
 328                 sc->debug.stats.istats.dtim++;
 329 }
 330
 331 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
 332                                    size_t count, loff_t *ppos)
 333 {
 334         struct ath_softc *sc = file->private_data;
 335         char buf[512];
 336         unsigned int len = 0;
 337
 338         if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
 339                 len += snprintf(buf + len, sizeof(buf) - len,
 340                         "%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp);
 341                 len += snprintf(buf + len, sizeof(buf) - len,
 342                         "%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp);
 343                 len += snprintf(buf + len, sizeof(buf) - len,
 344                         "%8s: %10u\n", "WATCHDOG",
 345                         sc->debug.stats.istats.bb_watchdog);
 346         } else {
 347                 len += snprintf(buf + len, sizeof(buf) - len,
 348                         "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
 349         }
 350         len += snprintf(buf + len, sizeof(buf) - len,
 351                 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol);
 352         len += snprintf(buf + len, sizeof(buf) - len,
 353                 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn);
 354         len += snprintf(buf + len, sizeof(buf) - len,
 355                 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok);
 356         len += snprintf(buf + len, sizeof(buf) - len,
 357                 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn);
 358         len += snprintf(buf + len, sizeof(buf) - len,
 359                 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib);
 360         len += snprintf(buf + len, sizeof(buf) - len,
 361                 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr);
 362         len += snprintf(buf + len, sizeof(buf) - len,
 363                 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss);
 364         len += snprintf(buf + len, sizeof(buf) - len,
 365                 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba);
 366         len += snprintf(buf + len, sizeof(buf) - len,
 367                 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss);
 368         len += snprintf(buf + len, sizeof(buf) - len,
 369                 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr);
 370         len += snprintf(buf + len, sizeof(buf) - len,
 371                 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst);
 372         len += snprintf(buf + len, sizeof(buf) - len,
 373                 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt);
 374         len += snprintf(buf + len, sizeof(buf) - len,
 375                 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim);
 376         len += snprintf(buf + len, sizeof(buf) - len,
 377                 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend);
 378         len += snprintf(buf + len, sizeof(buf) - len,
 379                 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync);
 380         len += snprintf(buf + len, sizeof(buf) - len,
 381                 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim);
 382         len += snprintf(buf + len, sizeof(buf) - len,
 383                 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total);
 384
 385         if (len > sizeof(buf))
 386                 len = sizeof(buf);
 387
 388         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 389 }
 390
 391 static const struct file_operations fops_interrupt = {
 392         .read = read_file_interrupt,
 393         .open = ath9k_debugfs_open,
 394         .owner = THIS_MODULE,
 395         .llseek = default_llseek,
 396 };
 397
 398 static const char *channel_type_str(enum nl80211_channel_type t)
 399 {
 400         switch (t) {
 401         case NL80211_CHAN_NO_HT:
 402                 return "no ht";
 403         case NL80211_CHAN_HT20:
 404                 return "ht20";
 405         case NL80211_CHAN_HT40MINUS:
 406                 return "ht40-";
 407         case NL80211_CHAN_HT40PLUS:
 408                 return "ht40+";
 409         default:
 410                 return "???";
 411         }
 412 }
 413
 414 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
 415                                size_t count, loff_t *ppos)
 416 {
 417         struct ath_softc *sc = file->private_data;
 418         struct ieee80211_channel *chan = sc->hw->conf.channel;
 419         struct ieee80211_conf *conf = &(sc->hw->conf);
 420         char buf[512];
 421         unsigned int len = 0;
 422         u8 addr[ETH_ALEN];
 423         u32 tmp;
 424
 425         len += snprintf(buf + len, sizeof(buf) - len,
 426                         "%s (chan=%d  center-freq: %d MHz  channel-type: %d (%s))\n",
 427                         wiphy_name(sc->hw->wiphy),
 428                         ieee80211_frequency_to_channel(chan->center_freq),
 429                         chan->center_freq,
 430                         conf->channel_type,
 431                         channel_type_str(conf->channel_type));
 432
 433         put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr);
 434         put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
 435         len += snprintf(buf + len, sizeof(buf) - len,
 436                         "addr: %pM\n", addr);
 437         put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr);
 438         put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4);
 439         len += snprintf(buf + len, sizeof(buf) - len,
 440                         "addrmask: %pM\n", addr);
 441         tmp = ath9k_hw_getrxfilter(sc->sc_ah);
 442         len += snprintf(buf + len, sizeof(buf) - len,
 443                         "rfilt: 0x%x", tmp);
 444         if (tmp & ATH9K_RX_FILTER_UCAST)
 445                 len += snprintf(buf + len, sizeof(buf) - len, " UCAST");
 446         if (tmp & ATH9K_RX_FILTER_MCAST)
 447                 len += snprintf(buf + len, sizeof(buf) - len, " MCAST");
 448         if (tmp & ATH9K_RX_FILTER_BCAST)
 449                 len += snprintf(buf + len, sizeof(buf) - len, " BCAST");
 450         if (tmp & ATH9K_RX_FILTER_CONTROL)
 451                 len += snprintf(buf + len, sizeof(buf) - len, " CONTROL");
 452         if (tmp & ATH9K_RX_FILTER_BEACON)
 453                 len += snprintf(buf + len, sizeof(buf) - len, " BEACON");
 454         if (tmp & ATH9K_RX_FILTER_PROM)
 455                 len += snprintf(buf + len, sizeof(buf) - len, " PROM");
 456         if (tmp & ATH9K_RX_FILTER_PROBEREQ)
 457                 len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ");
 458         if (tmp & ATH9K_RX_FILTER_PHYERR)
 459                 len += snprintf(buf + len, sizeof(buf) - len, " PHYERR");
 460         if (tmp & ATH9K_RX_FILTER_MYBEACON)
 461                 len += snprintf(buf + len, sizeof(buf) - len, " MYBEACON");
 462         if (tmp & ATH9K_RX_FILTER_COMP_BAR)
 463                 len += snprintf(buf + len, sizeof(buf) - len, " COMP_BAR");
 464         if (tmp & ATH9K_RX_FILTER_PSPOLL)
 465                 len += snprintf(buf + len, sizeof(buf) - len, " PSPOLL");
 466         if (tmp & ATH9K_RX_FILTER_PHYRADAR)
 467                 len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR");
 468         if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
 469                 len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n");
 470         else
 471                 len += snprintf(buf + len, sizeof(buf) - len, "\n");
 472
 473         if (len > sizeof(buf))
 474                 len = sizeof(buf);
 475
 476         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 477 }
 478
 479 static const struct file_operations fops_wiphy = {
 480         .read = read_file_wiphy,
 481         .open = ath9k_debugfs_open,
 482         .owner = THIS_MODULE,
 483         .llseek = default_llseek,
 484 };
 485
 486 #define PR_QNUM(_n) sc->tx.txq_map[_n]->axq_qnum
 487 #define PR(str, elem)                                                   \
 488         do {                                                            \
 489                 len += snprintf(buf + len, size - len,                  \
 490                                 "%s%13u%11u%10u%10u\n", str,            \
 491                 sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem, \
 492                 sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem, \
 493                 sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem, \
 494                 sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem); \
 495                 if (len >= size)                          \
 496                         goto done;                        \
 497 } while(0)
 498
 499 #define PRX(str, elem)                                                  \
 500 do {                                                                    \
 501         len += snprintf(buf + len, size - len,                          \
 502                         "%s%13u%11u%10u%10u\n", str,                    \
 503                         (unsigned int)(sc->tx.txq_map[WME_AC_BE]->elem),        \
 504                         (unsigned int)(sc->tx.txq_map[WME_AC_BK]->elem),        \
 505                         (unsigned int)(sc->tx.txq_map[WME_AC_VI]->elem),        \
 506                         (unsigned int)(sc->tx.txq_map[WME_AC_VO]->elem));       \
 507         if (len >= size)                                                \
 508                 goto done;                                              \
 509 } while(0)
 510
 511 #define PRQLE(str, elem)                                                \
 512 do {                                                                    \
 513         len += snprintf(buf + len, size - len,                          \
 514                         "%s%13i%11i%10i%10i\n", str,                    \
 515                         list_empty(&sc->tx.txq_map[WME_AC_BE]->elem),   \
 516                         list_empty(&sc->tx.txq_map[WME_AC_BK]->elem),   \
 517                         list_empty(&sc->tx.txq_map[WME_AC_VI]->elem),   \
 518                         list_empty(&sc->tx.txq_map[WME_AC_VO]->elem));  \
 519         if (len >= size)                                                \
 520                 goto done;                                              \
 521 } while (0)
 522
 523 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
 524                               size_t count, loff_t *ppos)
 525 {
 526         struct ath_softc *sc = file->private_data;
 527         char *buf;
 528         unsigned int len = 0, size = 8000;
 529         int i;
 530         ssize_t retval = 0;
 531         char tmp[32];
 532
 533         buf = kzalloc(size, GFP_KERNEL);
 534         if (buf == NULL)
 535                 return -ENOMEM;
 536
 537         len += sprintf(buf, "Num-Tx-Queues: %i  tx-queues-setup: 0x%x"
 538                        " poll-work-seen: %u\n"
 539                        "%30s %10s%10s%10s\n\n",
 540                        ATH9K_NUM_TX_QUEUES, sc->tx.txqsetup,
 541                        sc->tx_complete_poll_work_seen,
 542                        "BE", "BK", "VI", "VO");
 543
 544         PR("MPDUs Queued:    ", queued);
 545         PR("MPDUs Completed: ", completed);
 546         PR("Aggregates:      ", a_aggr);
 547         PR("AMPDUs Queued HW:", a_queued_hw);
 548         PR("AMPDUs Queued SW:", a_queued_sw);
 549         PR("AMPDUs Completed:", a_completed);
 550         PR("AMPDUs Retried:  ", a_retries);
 551         PR("AMPDUs XRetried: ", a_xretries);
 552         PR("FIFO Underrun:   ", fifo_underrun);
 553         PR("TXOP Exceeded:   ", xtxop);
 554         PR("TXTIMER Expiry:  ", timer_exp);
 555         PR("DESC CFG Error:  ", desc_cfg_err);
 556         PR("DATA Underrun:   ", data_underrun);
 557         PR("DELIM Underrun:  ", delim_underrun);
 558         PR("TX-Pkts-All:     ", tx_pkts_all);
 559         PR("TX-Bytes-All:    ", tx_bytes_all);
 560         PR("hw-put-tx-buf:   ", puttxbuf);
 561         PR("hw-tx-start:     ", txstart);
 562         PR("hw-tx-proc-desc: ", txprocdesc);
 563         len += snprintf(buf + len, size - len,
 564                         "%s%11p%11p%10p%10p\n", "txq-memory-address:",
 565                         sc->tx.txq_map[WME_AC_BE],
 566                         sc->tx.txq_map[WME_AC_BK],
 567                         sc->tx.txq_map[WME_AC_VI],
 568                         sc->tx.txq_map[WME_AC_VO]);
 569         if (len >= size)
 570                 goto done;
 571
 572         PRX("axq-qnum:        ", axq_qnum);
 573         PRX("axq-depth:       ", axq_depth);
 574         PRX("axq-ampdu_depth: ", axq_ampdu_depth);
 575         PRX("axq-stopped      ", stopped);
 576         PRX("tx-in-progress   ", axq_tx_inprogress);
 577         PRX("pending-frames   ", pending_frames);
 578         PRX("txq_headidx:     ", txq_headidx);
 579         PRX("txq_tailidx:     ", txq_headidx);
 580
 581         PRQLE("axq_q empty:       ", axq_q);
 582         PRQLE("axq_acq empty:     ", axq_acq);
 583         PRQLE("txq_fifo_pending:  ", txq_fifo_pending);
 584         for (i = 0; i < ATH_TXFIFO_DEPTH; i++) {
 585                 snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i);
 586                 PRQLE(tmp, txq_fifo[i]);
 587         }
 588
 589         /* Print out more detailed queue-info */
 590         for (i = 0; i <= WME_AC_BK; i++) {
 591                 struct ath_txq *txq = &(sc->tx.txq[i]);
 592                 struct ath_atx_ac *ac;
 593                 struct ath_atx_tid *tid;
 594                 if (len >= size)
 595                         goto done;
 596                 spin_lock_bh(&txq->axq_lock);
 597                 if (!list_empty(&txq->axq_acq)) {
 598                         ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac,
 599                                               list);
 600                         len += snprintf(buf + len, size - len,
 601                                         "txq[%i] first-ac: %p sched: %i\n",
 602                                         i, ac, ac->sched);
 603                         if (list_empty(&ac->tid_q) || (len >= size))
 604                                 goto done_for;
 605                         tid = list_first_entry(&ac->tid_q, struct ath_atx_tid,
 606                                                list);
 607                         len += snprintf(buf + len, size - len,
 608                                         " first-tid: %p sched: %i paused: %i\n",
 609                                         tid, tid->sched, tid->paused);
 610                 }
 611         done_for:
 612                 spin_unlock_bh(&txq->axq_lock);
 613         }
 614
 615 done:
 616         if (len > size)
 617                 len = size;
 618
 619         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 620         kfree(buf);
 621
 622         return retval;
 623 }
 624
 625 static ssize_t read_file_stations(struct file *file, char __user *user_buf,
 626                                   size_t count, loff_t *ppos)
 627 {
 628         struct ath_softc *sc = file->private_data;
 629         char *buf;
 630         unsigned int len = 0, size = 64000;
 631         struct ath_node *an = NULL;
 632         ssize_t retval = 0;
 633         int q;
 634
 635         buf = kzalloc(size, GFP_KERNEL);
 636         if (buf == NULL)
 637                 return -ENOMEM;
 638
 639         len += snprintf(buf + len, size - len,
 640                         "Stations:\n"
 641                         " tid: addr sched paused buf_q-empty an ac\n"
 642                         " ac: addr sched tid_q-empty txq\n");
 643
 644         spin_lock(&sc->nodes_lock);
 645         list_for_each_entry(an, &sc->nodes, list) {
 646                 len += snprintf(buf + len, size - len,
 647                                 "%pM\n", an->sta->addr);
 648                 if (len >= size)
 649                         goto done;
 650
 651                 for (q = 0; q < WME_NUM_TID; q++) {
 652                         struct ath_atx_tid *tid = &(an->tid[q]);
 653                         len += snprintf(buf + len, size - len,
 654                                         " tid: %p %s %s %i %p %p\n",
 655                                         tid, tid->sched ? "sched" : "idle",
 656                                         tid->paused ? "paused" : "running",
 657                                         list_empty(&tid->buf_q),
 658                                         tid->an, tid->ac);
 659                         if (len >= size)
 660                                 goto done;
 661                 }
 662
 663                 for (q = 0; q < WME_NUM_AC; q++) {
 664                         struct ath_atx_ac *ac = &(an->ac[q]);
 665                         len += snprintf(buf + len, size - len,
 666                                         " ac: %p %s %i %p\n",
 667                                         ac, ac->sched ? "sched" : "idle",
 668                                         list_empty(&ac->tid_q), ac->txq);
 669                         if (len >= size)
 670                                 goto done;
 671                 }
 672         }
 673
 674 done:
 675         spin_unlock(&sc->nodes_lock);
 676         if (len > size)
 677                 len = size;
 678
 679         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 680         kfree(buf);
 681
 682         return retval;
 683 }
 684
 685 static ssize_t read_file_misc(struct file *file, char __user *user_buf,
 686                               size_t count, loff_t *ppos)
 687 {
 688         struct ath_softc *sc = file->private_data;
 689         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 690         struct ath_hw *ah = sc->sc_ah;
 691         struct ieee80211_hw *hw = sc->hw;
 692         char *buf;
 693         unsigned int len = 0, size = 8000;
 694         ssize_t retval = 0;
 695         const char *tmp;
 696         unsigned int reg;
 697         struct ath9k_vif_iter_data iter_data;
 698
 699         ath9k_calculate_iter_data(hw, NULL, &iter_data);
 700
 701         buf = kzalloc(size, GFP_KERNEL);
 702         if (buf == NULL)
 703                 return -ENOMEM;
 704
 705         switch (sc->sc_ah->opmode) {
 706         case  NL80211_IFTYPE_ADHOC:
 707                 tmp = "ADHOC";
 708                 break;
 709         case  NL80211_IFTYPE_MESH_POINT:
 710                 tmp = "MESH";
 711                 break;
 712         case  NL80211_IFTYPE_AP:
 713                 tmp = "AP";
 714                 break;
 715         case  NL80211_IFTYPE_STATION:
 716                 tmp = "STATION";
 717                 break;
 718         default:
 719                 tmp = "???";
 720                 break;
 721         }
 722
 723         len += snprintf(buf + len, size - len,
 724                         "curbssid: %pM\n"
 725                         "OP-Mode: %s(%i)\n"
 726                         "Beacon-Timer-Register: 0x%x\n",
 727                         common->curbssid,
 728                         tmp, (int)(sc->sc_ah->opmode),
 729                         REG_READ(ah, AR_BEACON_PERIOD));
 730
 731         reg = REG_READ(ah, AR_TIMER_MODE);
 732         len += snprintf(buf + len, size - len, "Timer-Mode-Register: 0x%x (",
 733                         reg);
 734         if (reg & AR_TBTT_TIMER_EN)
 735                 len += snprintf(buf + len, size - len, "TBTT ");
 736         if (reg & AR_DBA_TIMER_EN)
 737                 len += snprintf(buf + len, size - len, "DBA ");
 738         if (reg & AR_SWBA_TIMER_EN)
 739                 len += snprintf(buf + len, size - len, "SWBA ");
 740         if (reg & AR_HCF_TIMER_EN)
 741                 len += snprintf(buf + len, size - len, "HCF ");
 742         if (reg & AR_TIM_TIMER_EN)
 743                 len += snprintf(buf + len, size - len, "TIM ");
 744         if (reg & AR_DTIM_TIMER_EN)
 745                 len += snprintf(buf + len, size - len, "DTIM ");
 746         len += snprintf(buf + len, size - len, ")\n");
 747
 748         reg = sc->sc_ah->imask;
 749         len += snprintf(buf + len, size - len, "imask: 0x%x (", reg);
 750         if (reg & ATH9K_INT_SWBA)
 751                 len += snprintf(buf + len, size - len, "SWBA ");
 752         if (reg & ATH9K_INT_BMISS)
 753                 len += snprintf(buf + len, size - len, "BMISS ");
 754         if (reg & ATH9K_INT_CST)
 755                 len += snprintf(buf + len, size - len, "CST ");
 756         if (reg & ATH9K_INT_RX)
 757                 len += snprintf(buf + len, size - len, "RX ");
 758         if (reg & ATH9K_INT_RXHP)
 759                 len += snprintf(buf + len, size - len, "RXHP ");
 760         if (reg & ATH9K_INT_RXLP)
 761                 len += snprintf(buf + len, size - len, "RXLP ");
 762         if (reg & ATH9K_INT_BB_WATCHDOG)
 763                 len += snprintf(buf + len, size - len, "BB_WATCHDOG ");
 764         /* there are other IRQs if one wanted to add them. */
 765         len += snprintf(buf + len, size - len, ")\n");
 766
 767         len += snprintf(buf + len, size - len,
 768                         "VIF Counts: AP: %i STA: %i MESH: %i WDS: %i"
 769                         " ADHOC: %i OTHER: %i nvifs: %hi beacon-vifs: %hi\n",
 770                         iter_data.naps, iter_data.nstations, iter_data.nmeshes,
 771                         iter_data.nwds, iter_data.nadhocs, iter_data.nothers,
 772                         sc->nvifs, sc->nbcnvifs);
 773
 774         len += snprintf(buf + len, size - len,
 775                         "Calculated-BSSID-Mask: %pM\n",
 776                         iter_data.mask);
 777
 778         if (len > size)
 779                 len = size;
 780
 781         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 782         kfree(buf);
 783
 784         return retval;
 785 }
 786
 787 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
 788                        struct ath_tx_status *ts, struct ath_txq *txq)
 789 {
 790         int qnum = txq->axq_qnum;
 791
 792         TX_STAT_INC(qnum, tx_pkts_all);
 793         sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len;
 794
 795         if (bf_isampdu(bf)) {
 796                 if (bf_isxretried(bf))
 797                         TX_STAT_INC(qnum, a_xretries);
 798                 else
 799                         TX_STAT_INC(qnum, a_completed);
 800         } else {
 801                 TX_STAT_INC(qnum, completed);
 802         }
 803
 804         if (ts->ts_status & ATH9K_TXERR_FIFO)
 805                 TX_STAT_INC(qnum, fifo_underrun);
 806         if (ts->ts_status & ATH9K_TXERR_XTXOP)
 807                 TX_STAT_INC(qnum, xtxop);
 808         if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
 809                 TX_STAT_INC(qnum, timer_exp);
 810         if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
 811                 TX_STAT_INC(qnum, desc_cfg_err);
 812         if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
 813                 TX_STAT_INC(qnum, data_underrun);
 814         if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
 815                 TX_STAT_INC(qnum, delim_underrun);
 816 }
 817
 818 static const struct file_operations fops_xmit = {
 819         .read = read_file_xmit,
 820         .open = ath9k_debugfs_open,
 821         .owner = THIS_MODULE,
 822         .llseek = default_llseek,
 823 };
 824
 825 static const struct file_operations fops_stations = {
 826         .read = read_file_stations,
 827         .open = ath9k_debugfs_open,
 828         .owner = THIS_MODULE,
 829         .llseek = default_llseek,
 830 };
 831
 832 static const struct file_operations fops_misc = {
 833         .read = read_file_misc,
 834         .open = ath9k_debugfs_open,
 835         .owner = THIS_MODULE,
 836         .llseek = default_llseek,
 837 };
 838
 839 static ssize_t read_file_recv(struct file *file, char __user *user_buf,
 840                               size_t count, loff_t *ppos)
 841 {
 842 #define PHY_ERR(s, p) \
 843         len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \
 844                         sc->debug.stats.rxstats.phy_err_stats[p]);
 845
 846         struct ath_softc *sc = file->private_data;
 847         char *buf;
 848         unsigned int len = 0, size = 1152;
 849         ssize_t retval = 0;
 850
 851         buf = kzalloc(size, GFP_KERNEL);
 852         if (buf == NULL)
 853                 return -ENOMEM;
 854
 855         len += snprintf(buf + len, size - len,
 856                         "%18s : %10u\n", "CRC ERR",
 857                         sc->debug.stats.rxstats.crc_err);
 858         len += snprintf(buf + len, size - len,
 859                         "%18s : %10u\n", "DECRYPT CRC ERR",
 860                         sc->debug.stats.rxstats.decrypt_crc_err);
 861         len += snprintf(buf + len, size - len,
 862                         "%18s : %10u\n", "PHY ERR",
 863                         sc->debug.stats.rxstats.phy_err);
 864         len += snprintf(buf + len, size - len,
 865                         "%18s : %10u\n", "MIC ERR",
 866                         sc->debug.stats.rxstats.mic_err);
 867         len += snprintf(buf + len, size - len,
 868                         "%18s : %10u\n", "PRE-DELIM CRC ERR",
 869                         sc->debug.stats.rxstats.pre_delim_crc_err);
 870         len += snprintf(buf + len, size - len,
 871                         "%18s : %10u\n", "POST-DELIM CRC ERR",
 872                         sc->debug.stats.rxstats.post_delim_crc_err);
 873         len += snprintf(buf + len, size - len,
 874                         "%18s : %10u\n", "DECRYPT BUSY ERR",
 875                         sc->debug.stats.rxstats.decrypt_busy_err);
 876
 877         PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN);
 878         PHY_ERR("TIMING", ATH9K_PHYERR_TIMING);
 879         PHY_ERR("PARITY", ATH9K_PHYERR_PARITY);
 880         PHY_ERR("RATE", ATH9K_PHYERR_RATE);
 881         PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH);
 882         PHY_ERR("RADAR", ATH9K_PHYERR_RADAR);
 883         PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE);
 884         PHY_ERR("TOR", ATH9K_PHYERR_TOR);
 885         PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING);
 886         PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY);
 887         PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL);
 888         PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL);
 889         PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP);
 890         PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE);
 891         PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART);
 892         PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT);
 893         PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING);
 894         PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC);
 895         PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL);
 896         PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE);
 897         PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART);
 898         PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL);
 899         PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP);
 900         PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR);
 901         PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL);
 902         PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL);
 903
 904         len += snprintf(buf + len, size - len,
 905                         "%18s : %10u\n", "RX-Pkts-All",
 906                         sc->debug.stats.rxstats.rx_pkts_all);
 907         len += snprintf(buf + len, size - len,
 908                         "%18s : %10u\n", "RX-Bytes-All",
 909                         sc->debug.stats.rxstats.rx_bytes_all);
 910
 911         if (len > size)
 912                 len = size;
 913
 914         retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 915         kfree(buf);
 916
 917         return retval;
 918
 919 #undef PHY_ERR
 920 }
 921
 922 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
 923 {
 924 #define RX_STAT_INC(c) sc->debug.stats.rxstats.c++
 925 #define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++
 926
 927         u32 phyerr;
 928
 929         RX_STAT_INC(rx_pkts_all);
 930         sc->debug.stats.rxstats.rx_bytes_all += rs->rs_datalen;
 931
 932         if (rs->rs_status & ATH9K_RXERR_CRC)
 933                 RX_STAT_INC(crc_err);
 934         if (rs->rs_status & ATH9K_RXERR_DECRYPT)
 935                 RX_STAT_INC(decrypt_crc_err);
 936         if (rs->rs_status & ATH9K_RXERR_MIC)
 937                 RX_STAT_INC(mic_err);
 938         if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE)
 939                 RX_STAT_INC(pre_delim_crc_err);
 940         if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST)
 941                 RX_STAT_INC(post_delim_crc_err);
 942         if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY)
 943                 RX_STAT_INC(decrypt_busy_err);
 944
 945         if (rs->rs_status & ATH9K_RXERR_PHY) {
 946                 RX_STAT_INC(phy_err);
 947                 phyerr = rs->rs_phyerr & 0x24;
 948                 RX_PHY_ERR_INC(phyerr);
 949         }
 950
 951 #undef RX_STAT_INC
 952 #undef RX_PHY_ERR_INC
 953 }
 954
 955 static const struct file_operations fops_recv = {
 956         .read = read_file_recv,
 957         .open = ath9k_debugfs_open,
 958         .owner = THIS_MODULE,
 959         .llseek = default_llseek,
 960 };
 961
 962 static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
 963                                 size_t count, loff_t *ppos)
 964 {
 965         struct ath_softc *sc = file->private_data;
 966         char buf[32];
 967         unsigned int len;
 968
 969         len = sprintf(buf, "0x%08x\n", sc->debug.regidx);
 970         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 971 }
 972
 973 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
 974                              size_t count, loff_t *ppos)
 975 {
 976         struct ath_softc *sc = file->private_data;
 977         unsigned long regidx;
 978         char buf[32];
 979         ssize_t len;
 980
 981         len = min(count, sizeof(buf) - 1);
 982         if (copy_from_user(buf, user_buf, len))
 983                 return -EFAULT;
 984
 985         buf[len] = '\0';
 986         if (strict_strtoul(buf, 0, &regidx))
 987                 return -EINVAL;
 988
 989         sc->debug.regidx = regidx;
 990         return count;
 991 }
 992
 993 static const struct file_operations fops_regidx = {
 994         .read = read_file_regidx,
 995         .write = write_file_regidx,
 996         .open = ath9k_debugfs_open,
 997         .owner = THIS_MODULE,
 998         .llseek = default_llseek,
 999 };
1000
1001 static ssize_t read_file_regval(struct file *file, char __user *user_buf,
1002                              size_t count, loff_t *ppos)
1003 {
1004         struct ath_softc *sc = file->private_data;
1005         struct ath_hw *ah = sc->sc_ah;
1006         char buf[32];
1007         unsigned int len;
1008         u32 regval;
1009
1010         regval = REG_READ_D(ah, sc->debug.regidx);
1011         len = sprintf(buf, "0x%08x\n", regval);
1012         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1013 }
1014
1015 static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
1016                              size_t count, loff_t *ppos)
1017 {
1018         struct ath_softc *sc = file->private_data;
1019         struct ath_hw *ah = sc->sc_ah;
1020         unsigned long regval;
1021         char buf[32];
1022         ssize_t len;
1023
1024         len = min(count, sizeof(buf) - 1);
1025         if (copy_from_user(buf, user_buf, len))
1026                 return -EFAULT;
1027
1028         buf[len] = '\0';
1029         if (strict_strtoul(buf, 0, &regval))
1030                 return -EINVAL;
1031
1032         REG_WRITE_D(ah, sc->debug.regidx, regval);
1033         return count;
1034 }
1035
1036 static const struct file_operations fops_regval = {
1037         .read = read_file_regval,
1038         .write = write_file_regval,
1039         .open = ath9k_debugfs_open,
1040         .owner = THIS_MODULE,
1041         .llseek = default_llseek,
1042 };
1043
1044 #define REGDUMP_LINE_SIZE       20
1045
1046 static int open_file_regdump(struct inode *inode, struct file *file)
1047 {
1048         struct ath_softc *sc = inode->i_private;
1049         unsigned int len = 0;
1050         u8 *buf;
1051         int i;
1052         unsigned long num_regs, regdump_len, max_reg_offset;
1053
1054         max_reg_offset = AR_SREV_9300_20_OR_LATER(sc->sc_ah) ? 0x16bd4 : 0xb500;
1055         num_regs = max_reg_offset / 4 + 1;
1056         regdump_len = num_regs * REGDUMP_LINE_SIZE + 1;
1057         buf = vmalloc(regdump_len);
1058         if (!buf)
1059                 return -ENOMEM;
1060
1061         ath9k_ps_wakeup(sc);
1062         for (i = 0; i < num_regs; i++)
1063                 len += scnprintf(buf + len, regdump_len - len,
1064                         "0x%06x 0x%08x\n", i << 2, REG_READ(sc->sc_ah, i << 2));
1065         ath9k_ps_restore(sc);
1066
1067         file->private_data = buf;
1068
1069         return 0;
1070 }
1071
1072 static const struct file_operations fops_regdump = {
1073         .open = open_file_regdump,
1074         .read = ath9k_debugfs_read_buf,
1075         .release = ath9k_debugfs_release_buf,
1076         .owner = THIS_MODULE,
1077         .llseek = default_llseek,/* read accesses f_pos */
1078 };
1079
1080 int ath9k_init_debug(struct ath_hw *ah)
1081 {
1082         struct ath_common *common = ath9k_hw_common(ah);
1083         struct ath_softc *sc = (struct ath_softc *) common->priv;
1084
1085         sc->debug.debugfs_phy = debugfs_create_dir("ath9k",
1086                                                    sc->hw->wiphy->debugfsdir);
1087         if (!sc->debug.debugfs_phy)
1088                 return -ENOMEM;
1089
1090 #ifdef CONFIG_ATH_DEBUG
1091         if (!debugfs_create_file("debug", S_IRUSR | S_IWUSR,
1092                         sc->debug.debugfs_phy, sc, &fops_debug))
1093                 goto err;
1094 #endif
1095
1096         if (!debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy,
1097                         sc, &fops_dma))
1098                 goto err;
1099
1100         if (!debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy,
1101                         sc, &fops_interrupt))
1102                 goto err;
1103
1104         if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR,
1105                         sc->debug.debugfs_phy, sc, &fops_wiphy))
1106                 goto err;
1107
1108         if (!debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy,
1109                         sc, &fops_xmit))
1110                 goto err;
1111
1112         if (!debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy,
1113                         sc, &fops_stations))
1114                 goto err;
1115
1116         if (!debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy,
1117                         sc, &fops_misc))
1118                 goto err;
1119
1120         if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy,
1121                         sc, &fops_recv))
1122                 goto err;
1123
1124         if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR,
1125                         sc->debug.debugfs_phy, sc, &fops_rx_chainmask))
1126                 goto err;
1127
1128         if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR,
1129                         sc->debug.debugfs_phy, sc, &fops_tx_chainmask))
1130                 goto err;
1131
1132         if (!debugfs_create_file("regidx", S_IRUSR | S_IWUSR,
1133                         sc->debug.debugfs_phy, sc, &fops_regidx))
1134                 goto err;
1135
1136         if (!debugfs_create_file("regval", S_IRUSR | S_IWUSR,
1137                         sc->debug.debugfs_phy, sc, &fops_regval))
1138                 goto err;
1139
1140         if (!debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR,
1141                         sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca))
1142                 goto err;
1143
1144         if (!debugfs_create_file("regdump", S_IRUSR, sc->debug.debugfs_phy,
1145                         sc, &fops_regdump))
1146                 goto err;
1147
1148         sc->debug.regidx = 0;
1149         return 0;
1150 err:
1151         debugfs_remove_recursive(sc->debug.debugfs_phy);
1152         sc->debug.debugfs_phy = NULL;
1153         return -ENOMEM;
1154 }