Pileus Git - ~andy/linux/blob - drivers/net/wireless/ath/ath6kl/debug.c

   1 /*
   2  * Copyright (c) 2004-2011 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 "core.h"
  18
  19 #include <linux/circ_buf.h>
  20 #include <linux/fs.h>
  21 #include <linux/vmalloc.h>
  22
  23 #include "debug.h"
  24 #include "target.h"
  25
  26 struct ath6kl_fwlog_slot {
  27         __le32 timestamp;
  28         __le32 length;
  29
  30         /* max ATH6KL_FWLOG_PAYLOAD_SIZE bytes */
  31         u8 payload[0];
  32 };
  33
  34 #define ATH6KL_FWLOG_SIZE 32768
  35 #define ATH6KL_FWLOG_SLOT_SIZE (sizeof(struct ath6kl_fwlog_slot) + \
  36                                 ATH6KL_FWLOG_PAYLOAD_SIZE)
  37 #define ATH6KL_FWLOG_VALID_MASK 0x1ffff
  38
  39 int ath6kl_printk(const char *level, const char *fmt, ...)
  40 {
  41         struct va_format vaf;
  42         va_list args;
  43         int rtn;
  44
  45         va_start(args, fmt);
  46
  47         vaf.fmt = fmt;
  48         vaf.va = &args;
  49
  50         rtn = printk("%sath6kl: %pV", level, &vaf);
  51
  52         va_end(args);
  53
  54         return rtn;
  55 }
  56
  57 #ifdef CONFIG_ATH6KL_DEBUG
  58
  59 #define REG_OUTPUT_LEN_PER_LINE 25
  60 #define REGTYPE_STR_LEN         100
  61
  62 struct ath6kl_diag_reg_info {
  63         u32 reg_start;
  64         u32 reg_end;
  65         const char *reg_info;
  66 };
  67
  68 static const struct ath6kl_diag_reg_info diag_reg[] = {
  69         { 0x20000, 0x200fc, "General DMA and Rx registers" },
  70         { 0x28000, 0x28900, "MAC PCU register & keycache" },
  71         { 0x20800, 0x20a40, "QCU" },
  72         { 0x21000, 0x212f0, "DCU" },
  73         { 0x4000,  0x42e4, "RTC" },
  74         { 0x540000, 0x540000 + (256 * 1024), "RAM" },
  75         { 0x29800, 0x2B210, "Base Band" },
  76         { 0x1C000, 0x1C748, "Analog" },
  77 };
  78
  79 void ath6kl_dump_registers(struct ath6kl_device *dev,
  80                            struct ath6kl_irq_proc_registers *irq_proc_reg,
  81                            struct ath6kl_irq_enable_reg *irq_enable_reg)
  82 {
  83
  84         ath6kl_dbg(ATH6KL_DBG_ANY, ("<------- Register Table -------->\n"));
  85
  86         if (irq_proc_reg != NULL) {
  87                 ath6kl_dbg(ATH6KL_DBG_ANY,
  88                         "Host Int status:           0x%x\n",
  89                         irq_proc_reg->host_int_status);
  90                 ath6kl_dbg(ATH6KL_DBG_ANY,
  91                            "CPU Int status:            0x%x\n",
  92                         irq_proc_reg->cpu_int_status);
  93                 ath6kl_dbg(ATH6KL_DBG_ANY,
  94                            "Error Int status:          0x%x\n",
  95                         irq_proc_reg->error_int_status);
  96                 ath6kl_dbg(ATH6KL_DBG_ANY,
  97                            "Counter Int status:        0x%x\n",
  98                         irq_proc_reg->counter_int_status);
  99                 ath6kl_dbg(ATH6KL_DBG_ANY,
 100                            "Mbox Frame:                0x%x\n",
 101                         irq_proc_reg->mbox_frame);
 102                 ath6kl_dbg(ATH6KL_DBG_ANY,
 103                            "Rx Lookahead Valid:        0x%x\n",
 104                         irq_proc_reg->rx_lkahd_valid);
 105                 ath6kl_dbg(ATH6KL_DBG_ANY,
 106                            "Rx Lookahead 0:            0x%x\n",
 107                         irq_proc_reg->rx_lkahd[0]);
 108                 ath6kl_dbg(ATH6KL_DBG_ANY,
 109                            "Rx Lookahead 1:            0x%x\n",
 110                         irq_proc_reg->rx_lkahd[1]);
 111
 112                 if (dev->ar->mbox_info.gmbox_addr != 0) {
 113                         /*
 114                          * If the target supports GMBOX hardware, dump some
 115                          * additional state.
 116                          */
 117                         ath6kl_dbg(ATH6KL_DBG_ANY,
 118                                 "GMBOX Host Int status 2:   0x%x\n",
 119                                 irq_proc_reg->host_int_status2);
 120                         ath6kl_dbg(ATH6KL_DBG_ANY,
 121                                 "GMBOX RX Avail:            0x%x\n",
 122                                 irq_proc_reg->gmbox_rx_avail);
 123                         ath6kl_dbg(ATH6KL_DBG_ANY,
 124                                 "GMBOX lookahead alias 0:   0x%x\n",
 125                                 irq_proc_reg->rx_gmbox_lkahd_alias[0]);
 126                         ath6kl_dbg(ATH6KL_DBG_ANY,
 127                                 "GMBOX lookahead alias 1:   0x%x\n",
 128                                 irq_proc_reg->rx_gmbox_lkahd_alias[1]);
 129                 }
 130
 131         }
 132
 133         if (irq_enable_reg != NULL) {
 134                 ath6kl_dbg(ATH6KL_DBG_ANY,
 135                         "Int status Enable:         0x%x\n",
 136                         irq_enable_reg->int_status_en);
 137                 ath6kl_dbg(ATH6KL_DBG_ANY, "Counter Int status Enable: 0x%x\n",
 138                         irq_enable_reg->cntr_int_status_en);
 139         }
 140         ath6kl_dbg(ATH6KL_DBG_ANY, "<------------------------------->\n");
 141 }
 142
 143 static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist)
 144 {
 145         ath6kl_dbg(ATH6KL_DBG_ANY,
 146                    "--- endpoint: %d  svc_id: 0x%X ---\n",
 147                    ep_dist->endpoint, ep_dist->svc_id);
 148         ath6kl_dbg(ATH6KL_DBG_ANY, " dist_flags     : 0x%X\n",
 149                    ep_dist->dist_flags);
 150         ath6kl_dbg(ATH6KL_DBG_ANY, " cred_norm      : %d\n",
 151                    ep_dist->cred_norm);
 152         ath6kl_dbg(ATH6KL_DBG_ANY, " cred_min       : %d\n",
 153                    ep_dist->cred_min);
 154         ath6kl_dbg(ATH6KL_DBG_ANY, " credits        : %d\n",
 155                    ep_dist->credits);
 156         ath6kl_dbg(ATH6KL_DBG_ANY, " cred_assngd    : %d\n",
 157                    ep_dist->cred_assngd);
 158         ath6kl_dbg(ATH6KL_DBG_ANY, " seek_cred      : %d\n",
 159                    ep_dist->seek_cred);
 160         ath6kl_dbg(ATH6KL_DBG_ANY, " cred_sz        : %d\n",
 161                    ep_dist->cred_sz);
 162         ath6kl_dbg(ATH6KL_DBG_ANY, " cred_per_msg   : %d\n",
 163                    ep_dist->cred_per_msg);
 164         ath6kl_dbg(ATH6KL_DBG_ANY, " cred_to_dist   : %d\n",
 165                    ep_dist->cred_to_dist);
 166         ath6kl_dbg(ATH6KL_DBG_ANY, " txq_depth      : %d\n",
 167                    get_queue_depth(&((struct htc_endpoint *)
 168                                      ep_dist->htc_rsvd)->txq));
 169         ath6kl_dbg(ATH6KL_DBG_ANY,
 170                    "----------------------------------\n");
 171 }
 172
 173 void dump_cred_dist_stats(struct htc_target *target)
 174 {
 175         struct htc_endpoint_credit_dist *ep_list;
 176
 177         if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_TRC))
 178                 return;
 179
 180         list_for_each_entry(ep_list, &target->cred_dist_list, list)
 181                 dump_cred_dist(ep_list);
 182
 183         ath6kl_dbg(ATH6KL_DBG_HTC, "ctxt:%p dist:%p\n",
 184                    target->cred_dist_cntxt, NULL);
 185         ath6kl_dbg(ATH6KL_DBG_HTC,
 186                    "credit distribution, total : %d, free : %d\n",
 187                    target->cred_dist_cntxt->total_avail_credits,
 188                    target->cred_dist_cntxt->cur_free_credits);
 189 }
 190
 191 static int ath6kl_debugfs_open(struct inode *inode, struct file *file)
 192 {
 193         file->private_data = inode->i_private;
 194         return 0;
 195 }
 196
 197 void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war)
 198 {
 199         switch (war) {
 200         case ATH6KL_WAR_INVALID_RATE:
 201                 ar->debug.war_stats.invalid_rate++;
 202                 break;
 203         }
 204 }
 205
 206 static ssize_t read_file_war_stats(struct file *file, char __user *user_buf,
 207                                    size_t count, loff_t *ppos)
 208 {
 209         struct ath6kl *ar = file->private_data;
 210         char *buf;
 211         unsigned int len = 0, buf_len = 1500;
 212         ssize_t ret_cnt;
 213
 214         buf = kzalloc(buf_len, GFP_KERNEL);
 215         if (!buf)
 216                 return -ENOMEM;
 217
 218         len += scnprintf(buf + len, buf_len - len, "\n");
 219         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 220                          "Workaround stats");
 221         len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 222                          "=================");
 223         len += scnprintf(buf + len, buf_len - len, "%20s %10u\n",
 224                          "Invalid rates", ar->debug.war_stats.invalid_rate);
 225
 226         if (WARN_ON(len > buf_len))
 227                 len = buf_len;
 228
 229         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 230
 231         kfree(buf);
 232         return ret_cnt;
 233 }
 234
 235 static const struct file_operations fops_war_stats = {
 236         .read = read_file_war_stats,
 237         .open = ath6kl_debugfs_open,
 238         .owner = THIS_MODULE,
 239         .llseek = default_llseek,
 240 };
 241
 242 static void ath6kl_debug_fwlog_add(struct ath6kl *ar, const void *buf,
 243                                    size_t buf_len)
 244 {
 245         struct circ_buf *fwlog = &ar->debug.fwlog_buf;
 246         size_t space;
 247         int i;
 248
 249         /* entries must all be equal size */
 250         if (WARN_ON(buf_len != ATH6KL_FWLOG_SLOT_SIZE))
 251                 return;
 252
 253         space = CIRC_SPACE(fwlog->head, fwlog->tail, ATH6KL_FWLOG_SIZE);
 254         if (space < buf_len)
 255                 /* discard oldest slot */
 256                 fwlog->tail = (fwlog->tail + ATH6KL_FWLOG_SLOT_SIZE) &
 257                         (ATH6KL_FWLOG_SIZE - 1);
 258
 259         for (i = 0; i < buf_len; i += space) {
 260                 space = CIRC_SPACE_TO_END(fwlog->head, fwlog->tail,
 261                                           ATH6KL_FWLOG_SIZE);
 262
 263                 if ((size_t) space > buf_len - i)
 264                         space = buf_len - i;
 265
 266                 memcpy(&fwlog->buf[fwlog->head], buf, space);
 267                 fwlog->head = (fwlog->head + space) & (ATH6KL_FWLOG_SIZE - 1);
 268         }
 269
 270 }
 271
 272 void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len)
 273 {
 274         struct ath6kl_fwlog_slot *slot = ar->debug.fwlog_tmp;
 275         size_t slot_len;
 276
 277         if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE))
 278                 return;
 279
 280         spin_lock_bh(&ar->debug.fwlog_lock);
 281
 282         slot->timestamp = cpu_to_le32(jiffies);
 283         slot->length = cpu_to_le32(len);
 284         memcpy(slot->payload, buf, len);
 285
 286         slot_len = sizeof(*slot) + len;
 287
 288         if (slot_len < ATH6KL_FWLOG_SLOT_SIZE)
 289                 memset(slot->payload + len, 0,
 290                        ATH6KL_FWLOG_SLOT_SIZE - slot_len);
 291
 292         ath6kl_debug_fwlog_add(ar, slot, ATH6KL_FWLOG_SLOT_SIZE);
 293
 294         spin_unlock_bh(&ar->debug.fwlog_lock);
 295 }
 296
 297 static bool ath6kl_debug_fwlog_empty(struct ath6kl *ar)
 298 {
 299         return CIRC_CNT(ar->debug.fwlog_buf.head,
 300                         ar->debug.fwlog_buf.tail,
 301                         ATH6KL_FWLOG_SLOT_SIZE) == 0;
 302 }
 303
 304 static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf,
 305                                  size_t count, loff_t *ppos)
 306 {
 307         struct ath6kl *ar = file->private_data;
 308         struct circ_buf *fwlog = &ar->debug.fwlog_buf;
 309         size_t len = 0, buf_len = count;
 310         ssize_t ret_cnt;
 311         char *buf;
 312         int ccnt;
 313
 314         buf = vmalloc(buf_len);
 315         if (!buf)
 316                 return -ENOMEM;
 317
 318         /* read undelivered logs from firmware */
 319         ath6kl_read_fwlogs(ar);
 320
 321         spin_lock_bh(&ar->debug.fwlog_lock);
 322
 323         while (len < buf_len && !ath6kl_debug_fwlog_empty(ar)) {
 324                 ccnt = CIRC_CNT_TO_END(fwlog->head, fwlog->tail,
 325                                        ATH6KL_FWLOG_SIZE);
 326
 327                 if ((size_t) ccnt > buf_len - len)
 328                         ccnt = buf_len - len;
 329
 330                 memcpy(buf + len, &fwlog->buf[fwlog->tail], ccnt);
 331                 len += ccnt;
 332
 333                 fwlog->tail = (fwlog->tail + ccnt) &
 334                         (ATH6KL_FWLOG_SIZE - 1);
 335         }
 336
 337         spin_unlock_bh(&ar->debug.fwlog_lock);
 338
 339         if (WARN_ON(len > buf_len))
 340                 len = buf_len;
 341
 342         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 343
 344         vfree(buf);
 345
 346         return ret_cnt;
 347 }
 348
 349 static const struct file_operations fops_fwlog = {
 350         .open = ath6kl_debugfs_open,
 351         .read = ath6kl_fwlog_read,
 352         .owner = THIS_MODULE,
 353         .llseek = default_llseek,
 354 };
 355
 356 static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf,
 357                                       size_t count, loff_t *ppos)
 358 {
 359         struct ath6kl *ar = file->private_data;
 360         char buf[16];
 361         int len;
 362
 363         len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask);
 364
 365         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 366 }
 367
 368 static ssize_t ath6kl_fwlog_mask_write(struct file *file,
 369                                        const char __user *user_buf,
 370                                        size_t count, loff_t *ppos)
 371 {
 372         struct ath6kl *ar = file->private_data;
 373         int ret;
 374
 375         ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask);
 376         if (ret)
 377                 return ret;
 378
 379         ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi,
 380                                                  ATH6KL_FWLOG_VALID_MASK,
 381                                                  ar->debug.fwlog_mask);
 382         if (ret)
 383                 return ret;
 384
 385         return count;
 386 }
 387
 388 static const struct file_operations fops_fwlog_mask = {
 389         .open = ath6kl_debugfs_open,
 390         .read = ath6kl_fwlog_mask_read,
 391         .write = ath6kl_fwlog_mask_write,
 392         .owner = THIS_MODULE,
 393         .llseek = default_llseek,
 394 };
 395
 396 static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
 397                                    size_t count, loff_t *ppos)
 398 {
 399         struct ath6kl *ar = file->private_data;
 400         /* TODO: Findout vif */
 401         struct ath6kl_vif *vif = ar->vif;
 402         struct target_stats *tgt_stats = &vif->target_stats;
 403         char *buf;
 404         unsigned int len = 0, buf_len = 1500;
 405         int i;
 406         long left;
 407         ssize_t ret_cnt;
 408
 409         buf = kzalloc(buf_len, GFP_KERNEL);
 410         if (!buf)
 411                 return -ENOMEM;
 412
 413         if (down_interruptible(&ar->sem)) {
 414                 kfree(buf);
 415                 return -EBUSY;
 416         }
 417
 418         set_bit(STATS_UPDATE_PEND, &vif->flags);
 419
 420         if (ath6kl_wmi_get_stats_cmd(ar->wmi, 0)) {
 421                 up(&ar->sem);
 422                 kfree(buf);
 423                 return -EIO;
 424         }
 425
 426         left = wait_event_interruptible_timeout(ar->event_wq,
 427                                                 !test_bit(STATS_UPDATE_PEND,
 428                                                 &vif->flags), WMI_TIMEOUT);
 429
 430         up(&ar->sem);
 431
 432         if (left <= 0) {
 433                 kfree(buf);
 434                 return -ETIMEDOUT;
 435         }
 436
 437         len += scnprintf(buf + len, buf_len - len, "\n");
 438         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 439                          "Target Tx stats");
 440         len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 441                          "=================");
 442         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 443                          "Ucast packets", tgt_stats->tx_ucast_pkt);
 444         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 445                          "Bcast packets", tgt_stats->tx_bcast_pkt);
 446         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 447                          "Ucast byte", tgt_stats->tx_ucast_byte);
 448         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 449                          "Bcast byte", tgt_stats->tx_bcast_byte);
 450         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 451                          "Rts success cnt", tgt_stats->tx_rts_success_cnt);
 452         for (i = 0; i < 4; i++)
 453                 len += scnprintf(buf + len, buf_len - len,
 454                                  "%18s %d %10llu\n", "PER on ac",
 455                                  i, tgt_stats->tx_pkt_per_ac[i]);
 456         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 457                          "Error", tgt_stats->tx_err);
 458         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 459                          "Fail count", tgt_stats->tx_fail_cnt);
 460         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 461                          "Retry count", tgt_stats->tx_retry_cnt);
 462         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 463                          "Multi retry cnt", tgt_stats->tx_mult_retry_cnt);
 464         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 465                          "Rts fail cnt", tgt_stats->tx_rts_fail_cnt);
 466         len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n",
 467                          "TKIP counter measure used",
 468                          tgt_stats->tkip_cnter_measures_invoked);
 469
 470         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 471                          "Target Rx stats");
 472         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 473                          "=================");
 474
 475         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 476                          "Ucast packets", tgt_stats->rx_ucast_pkt);
 477         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 478                          "Ucast Rate", tgt_stats->rx_ucast_rate);
 479         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 480                          "Bcast packets", tgt_stats->rx_bcast_pkt);
 481         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 482                          "Ucast byte", tgt_stats->rx_ucast_byte);
 483         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 484                          "Bcast byte", tgt_stats->rx_bcast_byte);
 485         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 486                          "Fragmented pkt", tgt_stats->rx_frgment_pkt);
 487         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 488                          "Error", tgt_stats->rx_err);
 489         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 490                          "CRC Err", tgt_stats->rx_crc_err);
 491         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 492                          "Key chache miss", tgt_stats->rx_key_cache_miss);
 493         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 494                          "Decrypt Err", tgt_stats->rx_decrypt_err);
 495         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 496                          "Duplicate frame", tgt_stats->rx_dupl_frame);
 497         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 498                          "Tkip Mic failure", tgt_stats->tkip_local_mic_fail);
 499         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 500                          "TKIP format err", tgt_stats->tkip_fmt_err);
 501         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 502                          "CCMP format Err", tgt_stats->ccmp_fmt_err);
 503         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n",
 504                          "CCMP Replay Err", tgt_stats->ccmp_replays);
 505
 506         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 507                          "Misc Target stats");
 508         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 509                          "=================");
 510         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 511                          "Beacon Miss count", tgt_stats->cs_bmiss_cnt);
 512         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 513                          "Num Connects", tgt_stats->cs_connect_cnt);
 514         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 515                          "Num disconnects", tgt_stats->cs_discon_cnt);
 516         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 517                          "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi);
 518
 519         if (len > buf_len)
 520                 len = buf_len;
 521
 522         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 523
 524         kfree(buf);
 525         return ret_cnt;
 526 }
 527
 528 static const struct file_operations fops_tgt_stats = {
 529         .read = read_file_tgt_stats,
 530         .open = ath6kl_debugfs_open,
 531         .owner = THIS_MODULE,
 532         .llseek = default_llseek,
 533 };
 534
 535 #define print_credit_info(fmt_str, ep_list_field)               \
 536         (len += scnprintf(buf + len, buf_len - len, fmt_str,    \
 537                          ep_list->ep_list_field))
 538 #define CREDIT_INFO_DISPLAY_STRING_LEN  200
 539 #define CREDIT_INFO_LEN 128
 540
 541 static ssize_t read_file_credit_dist_stats(struct file *file,
 542                                            char __user *user_buf,
 543                                            size_t count, loff_t *ppos)
 544 {
 545         struct ath6kl *ar = file->private_data;
 546         struct htc_target *target = ar->htc_target;
 547         struct htc_endpoint_credit_dist *ep_list;
 548         char *buf;
 549         unsigned int buf_len, len = 0;
 550         ssize_t ret_cnt;
 551
 552         buf_len = CREDIT_INFO_DISPLAY_STRING_LEN +
 553                   get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN;
 554         buf = kzalloc(buf_len, GFP_KERNEL);
 555         if (!buf)
 556                 return -ENOMEM;
 557
 558         len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 559                          "Total Avail Credits: ",
 560                          target->cred_dist_cntxt->total_avail_credits);
 561         len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 562                          "Free credits :",
 563                          target->cred_dist_cntxt->cur_free_credits);
 564
 565         len += scnprintf(buf + len, buf_len - len,
 566                          " Epid  Flags    Cred_norm  Cred_min  Credits  Cred_assngd"
 567                          "  Seek_cred  Cred_sz  Cred_per_msg  Cred_to_dist"
 568                          "  qdepth\n");
 569
 570         list_for_each_entry(ep_list, &target->cred_dist_list, list) {
 571                 print_credit_info("  %2d", endpoint);
 572                 print_credit_info("%10x", dist_flags);
 573                 print_credit_info("%8d", cred_norm);
 574                 print_credit_info("%9d", cred_min);
 575                 print_credit_info("%9d", credits);
 576                 print_credit_info("%10d", cred_assngd);
 577                 print_credit_info("%13d", seek_cred);
 578                 print_credit_info("%12d", cred_sz);
 579                 print_credit_info("%9d", cred_per_msg);
 580                 print_credit_info("%14d", cred_to_dist);
 581                 len += scnprintf(buf + len, buf_len - len, "%12d\n",
 582                                  get_queue_depth(&((struct htc_endpoint *)
 583                                                  ep_list->htc_rsvd)->txq));
 584         }
 585
 586         if (len > buf_len)
 587                 len = buf_len;
 588
 589         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 590         kfree(buf);
 591         return ret_cnt;
 592 }
 593
 594 static const struct file_operations fops_credit_dist_stats = {
 595         .read = read_file_credit_dist_stats,
 596         .open = ath6kl_debugfs_open,
 597         .owner = THIS_MODULE,
 598         .llseek = default_llseek,
 599 };
 600
 601 static unsigned int print_endpoint_stat(struct htc_target *target, char *buf,
 602                                         unsigned int buf_len, unsigned int len,
 603                                         int offset, const char *name)
 604 {
 605         int i;
 606         struct htc_endpoint_stats *ep_st;
 607         u32 *counter;
 608
 609         len += scnprintf(buf + len, buf_len - len, "%s:", name);
 610         for (i = 0; i < ENDPOINT_MAX; i++) {
 611                 ep_st = &target->endpoint[i].ep_st;
 612                 counter = ((u32 *) ep_st) + (offset / 4);
 613                 len += scnprintf(buf + len, buf_len - len, " %u", *counter);
 614         }
 615         len += scnprintf(buf + len, buf_len - len, "\n");
 616
 617         return len;
 618 }
 619
 620 static ssize_t ath6kl_endpoint_stats_read(struct file *file,
 621                                           char __user *user_buf,
 622                                           size_t count, loff_t *ppos)
 623 {
 624         struct ath6kl *ar = file->private_data;
 625         struct htc_target *target = ar->htc_target;
 626         char *buf;
 627         unsigned int buf_len, len = 0;
 628         ssize_t ret_cnt;
 629
 630         buf_len = sizeof(struct htc_endpoint_stats) / sizeof(u32) *
 631                 (25 + ENDPOINT_MAX * 11);
 632         buf = kmalloc(buf_len, GFP_KERNEL);
 633         if (!buf)
 634                 return -ENOMEM;
 635
 636 #define EPSTAT(name)                                                    \
 637         len = print_endpoint_stat(target, buf, buf_len, len,            \
 638                                   offsetof(struct htc_endpoint_stats, name), \
 639                                   #name)
 640         EPSTAT(cred_low_indicate);
 641         EPSTAT(tx_issued);
 642         EPSTAT(tx_pkt_bundled);
 643         EPSTAT(tx_bundles);
 644         EPSTAT(tx_dropped);
 645         EPSTAT(tx_cred_rpt);
 646         EPSTAT(cred_rpt_from_rx);
 647         EPSTAT(cred_rpt_from_other);
 648         EPSTAT(cred_rpt_ep0);
 649         EPSTAT(cred_from_rx);
 650         EPSTAT(cred_from_other);
 651         EPSTAT(cred_from_ep0);
 652         EPSTAT(cred_cosumd);
 653         EPSTAT(cred_retnd);
 654         EPSTAT(rx_pkts);
 655         EPSTAT(rx_lkahds);
 656         EPSTAT(rx_bundl);
 657         EPSTAT(rx_bundle_lkahd);
 658         EPSTAT(rx_bundle_from_hdr);
 659         EPSTAT(rx_alloc_thresh_hit);
 660         EPSTAT(rxalloc_thresh_byte);
 661 #undef EPSTAT
 662
 663         if (len > buf_len)
 664                 len = buf_len;
 665
 666         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 667         kfree(buf);
 668         return ret_cnt;
 669 }
 670
 671 static ssize_t ath6kl_endpoint_stats_write(struct file *file,
 672                                            const char __user *user_buf,
 673                                            size_t count, loff_t *ppos)
 674 {
 675         struct ath6kl *ar = file->private_data;
 676         struct htc_target *target = ar->htc_target;
 677         int ret, i;
 678         u32 val;
 679         struct htc_endpoint_stats *ep_st;
 680
 681         ret = kstrtou32_from_user(user_buf, count, 0, &val);
 682         if (ret)
 683                 return ret;
 684         if (val == 0) {
 685                 for (i = 0; i < ENDPOINT_MAX; i++) {
 686                         ep_st = &target->endpoint[i].ep_st;
 687                         memset(ep_st, 0, sizeof(*ep_st));
 688                 }
 689         }
 690
 691         return count;
 692 }
 693
 694 static const struct file_operations fops_endpoint_stats = {
 695         .open = ath6kl_debugfs_open,
 696         .read = ath6kl_endpoint_stats_read,
 697         .write = ath6kl_endpoint_stats_write,
 698         .owner = THIS_MODULE,
 699         .llseek = default_llseek,
 700 };
 701
 702 static unsigned long ath6kl_get_num_reg(void)
 703 {
 704         int i;
 705         unsigned long n_reg = 0;
 706
 707         for (i = 0; i < ARRAY_SIZE(diag_reg); i++)
 708                 n_reg = n_reg +
 709                      (diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1;
 710
 711         return n_reg;
 712 }
 713
 714 static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr)
 715 {
 716         int i;
 717
 718         for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 719                 if (reg_addr >= diag_reg[i].reg_start &&
 720                     reg_addr <= diag_reg[i].reg_end)
 721                         return true;
 722         }
 723
 724         return false;
 725 }
 726
 727 static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf,
 728                                     size_t count, loff_t *ppos)
 729 {
 730         struct ath6kl *ar = file->private_data;
 731         u8 buf[50];
 732         unsigned int len = 0;
 733
 734         if (ar->debug.dbgfs_diag_reg)
 735                 len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n",
 736                                 ar->debug.dbgfs_diag_reg);
 737         else
 738                 len += scnprintf(buf + len, sizeof(buf) - len,
 739                                  "All diag registers\n");
 740
 741         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 742 }
 743
 744 static ssize_t ath6kl_regread_write(struct file *file,
 745                                     const char __user *user_buf,
 746                                     size_t count, loff_t *ppos)
 747 {
 748         struct ath6kl *ar = file->private_data;
 749         u8 buf[50];
 750         unsigned int len;
 751         unsigned long reg_addr;
 752
 753         len = min(count, sizeof(buf) - 1);
 754         if (copy_from_user(buf, user_buf, len))
 755                 return -EFAULT;
 756
 757         buf[len] = '\0';
 758
 759         if (strict_strtoul(buf, 0, &reg_addr))
 760                 return -EINVAL;
 761
 762         if ((reg_addr % 4) != 0)
 763                 return -EINVAL;
 764
 765         if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr))
 766                 return -EINVAL;
 767
 768         ar->debug.dbgfs_diag_reg = reg_addr;
 769
 770         return count;
 771 }
 772
 773 static const struct file_operations fops_diag_reg_read = {
 774         .read = ath6kl_regread_read,
 775         .write = ath6kl_regread_write,
 776         .open = ath6kl_debugfs_open,
 777         .owner = THIS_MODULE,
 778         .llseek = default_llseek,
 779 };
 780
 781 static int ath6kl_regdump_open(struct inode *inode, struct file *file)
 782 {
 783         struct ath6kl *ar = inode->i_private;
 784         u8 *buf;
 785         unsigned long int reg_len;
 786         unsigned int len = 0, n_reg;
 787         u32 addr;
 788         __le32 reg_val;
 789         int i, status;
 790
 791         /* Dump all the registers if no register is specified */
 792         if (!ar->debug.dbgfs_diag_reg)
 793                 n_reg = ath6kl_get_num_reg();
 794         else
 795                 n_reg = 1;
 796
 797         reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE;
 798         if (n_reg > 1)
 799                 reg_len += REGTYPE_STR_LEN;
 800
 801         buf = vmalloc(reg_len);
 802         if (!buf)
 803                 return -ENOMEM;
 804
 805         if (n_reg == 1) {
 806                 addr = ar->debug.dbgfs_diag_reg;
 807
 808                 status = ath6kl_diag_read32(ar,
 809                                 TARG_VTOP(ar->target_type, addr),
 810                                 (u32 *)&reg_val);
 811                 if (status)
 812                         goto fail_reg_read;
 813
 814                 len += scnprintf(buf + len, reg_len - len,
 815                                  "0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val));
 816                 goto done;
 817         }
 818
 819         for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 820                 len += scnprintf(buf + len, reg_len - len,
 821                                 "%s\n", diag_reg[i].reg_info);
 822                 for (addr = diag_reg[i].reg_start;
 823                      addr <= diag_reg[i].reg_end; addr += 4) {
 824                         status = ath6kl_diag_read32(ar,
 825                                         TARG_VTOP(ar->target_type, addr),
 826                                         (u32 *)&reg_val);
 827                         if (status)
 828                                 goto fail_reg_read;
 829
 830                         len += scnprintf(buf + len, reg_len - len,
 831                                         "0x%06x 0x%08x\n",
 832                                         addr, le32_to_cpu(reg_val));
 833                 }
 834         }
 835
 836 done:
 837         file->private_data = buf;
 838         return 0;
 839
 840 fail_reg_read:
 841         ath6kl_warn("Unable to read memory:%u\n", addr);
 842         vfree(buf);
 843         return -EIO;
 844 }
 845
 846 static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf,
 847                                   size_t count, loff_t *ppos)
 848 {
 849         u8 *buf = file->private_data;
 850         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 851 }
 852
 853 static int ath6kl_regdump_release(struct inode *inode, struct file *file)
 854 {
 855         vfree(file->private_data);
 856         return 0;
 857 }
 858
 859 static const struct file_operations fops_reg_dump = {
 860         .open = ath6kl_regdump_open,
 861         .read = ath6kl_regdump_read,
 862         .release = ath6kl_regdump_release,
 863         .owner = THIS_MODULE,
 864         .llseek = default_llseek,
 865 };
 866
 867 static ssize_t ath6kl_lrssi_roam_write(struct file *file,
 868                                        const char __user *user_buf,
 869                                        size_t count, loff_t *ppos)
 870 {
 871         struct ath6kl *ar = file->private_data;
 872         unsigned long lrssi_roam_threshold;
 873         char buf[32];
 874         ssize_t len;
 875
 876         len = min(count, sizeof(buf) - 1);
 877         if (copy_from_user(buf, user_buf, len))
 878                 return -EFAULT;
 879
 880         buf[len] = '\0';
 881         if (strict_strtoul(buf, 0, &lrssi_roam_threshold))
 882                 return -EINVAL;
 883
 884         ar->lrssi_roam_threshold = lrssi_roam_threshold;
 885
 886         ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
 887
 888         return count;
 889 }
 890
 891 static ssize_t ath6kl_lrssi_roam_read(struct file *file,
 892                                       char __user *user_buf,
 893                                       size_t count, loff_t *ppos)
 894 {
 895         struct ath6kl *ar = file->private_data;
 896         char buf[32];
 897         unsigned int len;
 898
 899         len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold);
 900
 901         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 902 }
 903
 904 static const struct file_operations fops_lrssi_roam_threshold = {
 905         .read = ath6kl_lrssi_roam_read,
 906         .write = ath6kl_lrssi_roam_write,
 907         .open = ath6kl_debugfs_open,
 908         .owner = THIS_MODULE,
 909         .llseek = default_llseek,
 910 };
 911
 912 static ssize_t ath6kl_regwrite_read(struct file *file,
 913                                     char __user *user_buf,
 914                                     size_t count, loff_t *ppos)
 915 {
 916         struct ath6kl *ar = file->private_data;
 917         u8 buf[32];
 918         unsigned int len = 0;
 919
 920         len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n",
 921                         ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr);
 922
 923         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 924 }
 925
 926 static ssize_t ath6kl_regwrite_write(struct file *file,
 927                                      const char __user *user_buf,
 928                                      size_t count, loff_t *ppos)
 929 {
 930         struct ath6kl *ar = file->private_data;
 931         char buf[32];
 932         char *sptr, *token;
 933         unsigned int len = 0;
 934         u32 reg_addr, reg_val;
 935
 936         len = min(count, sizeof(buf) - 1);
 937         if (copy_from_user(buf, user_buf, len))
 938                 return -EFAULT;
 939
 940         buf[len] = '\0';
 941         sptr = buf;
 942
 943         token = strsep(&sptr, "=");
 944         if (!token)
 945                 return -EINVAL;
 946
 947         if (kstrtou32(token, 0, &reg_addr))
 948                 return -EINVAL;
 949
 950         if (!ath6kl_dbg_is_diag_reg_valid(reg_addr))
 951                 return -EINVAL;
 952
 953         if (kstrtou32(sptr, 0, &reg_val))
 954                 return -EINVAL;
 955
 956         ar->debug.diag_reg_addr_wr = reg_addr;
 957         ar->debug.diag_reg_val_wr = reg_val;
 958
 959         if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr,
 960                                 cpu_to_le32(ar->debug.diag_reg_val_wr)))
 961                 return -EIO;
 962
 963         return count;
 964 }
 965
 966 static const struct file_operations fops_diag_reg_write = {
 967         .read = ath6kl_regwrite_read,
 968         .write = ath6kl_regwrite_write,
 969         .open = ath6kl_debugfs_open,
 970         .owner = THIS_MODULE,
 971         .llseek = default_llseek,
 972 };
 973
 974 int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,
 975                                 size_t len)
 976 {
 977         const struct wmi_target_roam_tbl *tbl;
 978         u16 num_entries;
 979
 980         if (len < sizeof(*tbl))
 981                 return -EINVAL;
 982
 983         tbl = (const struct wmi_target_roam_tbl *) buf;
 984         num_entries = le16_to_cpu(tbl->num_entries);
 985         if (sizeof(*tbl) + num_entries * sizeof(struct wmi_bss_roam_info) >
 986             len)
 987                 return -EINVAL;
 988
 989         if (ar->debug.roam_tbl == NULL ||
 990             ar->debug.roam_tbl_len < (unsigned int) len) {
 991                 kfree(ar->debug.roam_tbl);
 992                 ar->debug.roam_tbl = kmalloc(len, GFP_ATOMIC);
 993                 if (ar->debug.roam_tbl == NULL)
 994                         return -ENOMEM;
 995         }
 996
 997         memcpy(ar->debug.roam_tbl, buf, len);
 998         ar->debug.roam_tbl_len = len;
 999
1000         if (test_bit(ROAM_TBL_PEND, &ar->flag)) {
1001                 clear_bit(ROAM_TBL_PEND, &ar->flag);
1002                 wake_up(&ar->event_wq);
1003         }
1004
1005         return 0;
1006 }
1007
1008 static ssize_t ath6kl_roam_table_read(struct file *file, char __user *user_buf,
1009                                       size_t count, loff_t *ppos)
1010 {
1011         struct ath6kl *ar = file->private_data;
1012         int ret;
1013         long left;
1014         struct wmi_target_roam_tbl *tbl;
1015         u16 num_entries, i;
1016         char *buf;
1017         unsigned int len, buf_len;
1018         ssize_t ret_cnt;
1019
1020         if (down_interruptible(&ar->sem))
1021                 return -EBUSY;
1022
1023         set_bit(ROAM_TBL_PEND, &ar->flag);
1024
1025         ret = ath6kl_wmi_get_roam_tbl_cmd(ar->wmi);
1026         if (ret) {
1027                 up(&ar->sem);
1028                 return ret;
1029         }
1030
1031         left = wait_event_interruptible_timeout(
1032                 ar->event_wq, !test_bit(ROAM_TBL_PEND, &ar->flag), WMI_TIMEOUT);
1033         up(&ar->sem);
1034
1035         if (left <= 0)
1036                 return -ETIMEDOUT;
1037
1038         if (ar->debug.roam_tbl == NULL)
1039                 return -ENOMEM;
1040
1041         tbl = (struct wmi_target_roam_tbl *) ar->debug.roam_tbl;
1042         num_entries = le16_to_cpu(tbl->num_entries);
1043
1044         buf_len = 100 + num_entries * 100;
1045         buf = kzalloc(buf_len, GFP_KERNEL);
1046         if (buf == NULL)
1047                 return -ENOMEM;
1048         len = 0;
1049         len += scnprintf(buf + len, buf_len - len,
1050                          "roam_mode=%u\n\n"
1051                          "# roam_util bssid rssi rssidt last_rssi util bias\n",
1052                          le16_to_cpu(tbl->roam_mode));
1053
1054         for (i = 0; i < num_entries; i++) {
1055                 struct wmi_bss_roam_info *info = &tbl->info[i];
1056                 len += scnprintf(buf + len, buf_len - len,
1057                                  "%d %pM %d %d %d %d %d\n",
1058                                  a_sle32_to_cpu(info->roam_util), info->bssid,
1059                                  info->rssi, info->rssidt, info->last_rssi,
1060                                  info->util, info->bias);
1061         }
1062
1063         if (len > buf_len)
1064                 len = buf_len;
1065
1066         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1067
1068         kfree(buf);
1069         return ret_cnt;
1070 }
1071
1072 static const struct file_operations fops_roam_table = {
1073         .read = ath6kl_roam_table_read,
1074         .open = ath6kl_debugfs_open,
1075         .owner = THIS_MODULE,
1076         .llseek = default_llseek,
1077 };
1078
1079 static ssize_t ath6kl_force_roam_write(struct file *file,
1080                                        const char __user *user_buf,
1081                                        size_t count, loff_t *ppos)
1082 {
1083         struct ath6kl *ar = file->private_data;
1084         int ret;
1085         char buf[20];
1086         size_t len;
1087         u8 bssid[ETH_ALEN];
1088         int i;
1089         int addr[ETH_ALEN];
1090
1091         len = min(count, sizeof(buf) - 1);
1092         if (copy_from_user(buf, user_buf, len))
1093                 return -EFAULT;
1094         buf[len] = '\0';
1095
1096         if (sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x",
1097                    &addr[0], &addr[1], &addr[2], &addr[3], &addr[4], &addr[5])
1098             != ETH_ALEN)
1099                 return -EINVAL;
1100         for (i = 0; i < ETH_ALEN; i++)
1101                 bssid[i] = addr[i];
1102
1103         ret = ath6kl_wmi_force_roam_cmd(ar->wmi, bssid);
1104         if (ret)
1105                 return ret;
1106
1107         return count;
1108 }
1109
1110 static const struct file_operations fops_force_roam = {
1111         .write = ath6kl_force_roam_write,
1112         .open = ath6kl_debugfs_open,
1113         .owner = THIS_MODULE,
1114         .llseek = default_llseek,
1115 };
1116
1117 static ssize_t ath6kl_roam_mode_write(struct file *file,
1118                                       const char __user *user_buf,
1119                                       size_t count, loff_t *ppos)
1120 {
1121         struct ath6kl *ar = file->private_data;
1122         int ret;
1123         char buf[20];
1124         size_t len;
1125         enum wmi_roam_mode mode;
1126
1127         len = min(count, sizeof(buf) - 1);
1128         if (copy_from_user(buf, user_buf, len))
1129                 return -EFAULT;
1130         buf[len] = '\0';
1131         if (len > 0 && buf[len - 1] == '\n')
1132                 buf[len - 1] = '\0';
1133
1134         if (strcasecmp(buf, "default") == 0)
1135                 mode = WMI_DEFAULT_ROAM_MODE;
1136         else if (strcasecmp(buf, "bssbias") == 0)
1137                 mode = WMI_HOST_BIAS_ROAM_MODE;
1138         else if (strcasecmp(buf, "lock") == 0)
1139                 mode = WMI_LOCK_BSS_MODE;
1140         else
1141                 return -EINVAL;
1142
1143         ret = ath6kl_wmi_set_roam_mode_cmd(ar->wmi, mode);
1144         if (ret)
1145                 return ret;
1146
1147         return count;
1148 }
1149
1150 static const struct file_operations fops_roam_mode = {
1151         .write = ath6kl_roam_mode_write,
1152         .open = ath6kl_debugfs_open,
1153         .owner = THIS_MODULE,
1154         .llseek = default_llseek,
1155 };
1156
1157 void ath6kl_debug_set_keepalive(struct ath6kl *ar, u8 keepalive)
1158 {
1159         ar->debug.keepalive = keepalive;
1160 }
1161
1162 static ssize_t ath6kl_keepalive_read(struct file *file, char __user *user_buf,
1163                                      size_t count, loff_t *ppos)
1164 {
1165         struct ath6kl *ar = file->private_data;
1166         char buf[16];
1167         int len;
1168
1169         len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.keepalive);
1170
1171         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1172 }
1173
1174 static ssize_t ath6kl_keepalive_write(struct file *file,
1175                                       const char __user *user_buf,
1176                                       size_t count, loff_t *ppos)
1177 {
1178         struct ath6kl *ar = file->private_data;
1179         int ret;
1180         u8 val;
1181
1182         ret = kstrtou8_from_user(user_buf, count, 0, &val);
1183         if (ret)
1184                 return ret;
1185
1186         ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, val);
1187         if (ret)
1188                 return ret;
1189
1190         return count;
1191 }
1192
1193 static const struct file_operations fops_keepalive = {
1194         .open = ath6kl_debugfs_open,
1195         .read = ath6kl_keepalive_read,
1196         .write = ath6kl_keepalive_write,
1197         .owner = THIS_MODULE,
1198         .llseek = default_llseek,
1199 };
1200
1201 void ath6kl_debug_set_disconnect_timeout(struct ath6kl *ar, u8 timeout)
1202 {
1203         ar->debug.disc_timeout = timeout;
1204 }
1205
1206 static ssize_t ath6kl_disconnect_timeout_read(struct file *file,
1207                                               char __user *user_buf,
1208                                               size_t count, loff_t *ppos)
1209 {
1210         struct ath6kl *ar = file->private_data;
1211         char buf[16];
1212         int len;
1213
1214         len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.disc_timeout);
1215
1216         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1217 }
1218
1219 static ssize_t ath6kl_disconnect_timeout_write(struct file *file,
1220                                                const char __user *user_buf,
1221                                                size_t count, loff_t *ppos)
1222 {
1223         struct ath6kl *ar = file->private_data;
1224         int ret;
1225         u8 val;
1226
1227         ret = kstrtou8_from_user(user_buf, count, 0, &val);
1228         if (ret)
1229                 return ret;
1230
1231         ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, val);
1232         if (ret)
1233                 return ret;
1234
1235         return count;
1236 }
1237
1238 static const struct file_operations fops_disconnect_timeout = {
1239         .open = ath6kl_debugfs_open,
1240         .read = ath6kl_disconnect_timeout_read,
1241         .write = ath6kl_disconnect_timeout_write,
1242         .owner = THIS_MODULE,
1243         .llseek = default_llseek,
1244 };
1245
1246 static ssize_t ath6kl_create_qos_write(struct file *file,
1247                                                 const char __user *user_buf,
1248                                                 size_t count, loff_t *ppos)
1249 {
1250
1251         struct ath6kl *ar = file->private_data;
1252         /* TODO: Findout vif */
1253         struct ath6kl_vif *vif = ar->vif;
1254         char buf[100];
1255         ssize_t len;
1256         char *sptr, *token;
1257         struct wmi_create_pstream_cmd pstream;
1258         u32 val32;
1259         u16 val16;
1260
1261         len = min(count, sizeof(buf) - 1);
1262         if (copy_from_user(buf, user_buf, len))
1263                 return -EFAULT;
1264         buf[len] = '\0';
1265         sptr = buf;
1266
1267         token = strsep(&sptr, " ");
1268         if (!token)
1269                 return -EINVAL;
1270         if (kstrtou8(token, 0, &pstream.user_pri))
1271                 return -EINVAL;
1272
1273         token = strsep(&sptr, " ");
1274         if (!token)
1275                 return -EINVAL;
1276         if (kstrtou8(token, 0, &pstream.traffic_direc))
1277                 return -EINVAL;
1278
1279         token = strsep(&sptr, " ");
1280         if (!token)
1281                 return -EINVAL;
1282         if (kstrtou8(token, 0, &pstream.traffic_class))
1283                 return -EINVAL;
1284
1285         token = strsep(&sptr, " ");
1286         if (!token)
1287                 return -EINVAL;
1288         if (kstrtou8(token, 0, &pstream.traffic_type))
1289                 return -EINVAL;
1290
1291         token = strsep(&sptr, " ");
1292         if (!token)
1293                 return -EINVAL;
1294         if (kstrtou8(token, 0, &pstream.voice_psc_cap))
1295                 return -EINVAL;
1296
1297         token = strsep(&sptr, " ");
1298         if (!token)
1299                 return -EINVAL;
1300         if (kstrtou32(token, 0, &val32))
1301                 return -EINVAL;
1302         pstream.min_service_int = cpu_to_le32(val32);
1303
1304         token = strsep(&sptr, " ");
1305         if (!token)
1306                 return -EINVAL;
1307         if (kstrtou32(token, 0, &val32))
1308                 return -EINVAL;
1309         pstream.max_service_int = cpu_to_le32(val32);
1310
1311         token = strsep(&sptr, " ");
1312         if (!token)
1313                 return -EINVAL;
1314         if (kstrtou32(token, 0, &val32))
1315                 return -EINVAL;
1316         pstream.inactivity_int = cpu_to_le32(val32);
1317
1318         token = strsep(&sptr, " ");
1319         if (!token)
1320                 return -EINVAL;
1321         if (kstrtou32(token, 0, &val32))
1322                 return -EINVAL;
1323         pstream.suspension_int = cpu_to_le32(val32);
1324
1325         token = strsep(&sptr, " ");
1326         if (!token)
1327                 return -EINVAL;
1328         if (kstrtou32(token, 0, &val32))
1329                 return -EINVAL;
1330         pstream.service_start_time = cpu_to_le32(val32);
1331
1332         token = strsep(&sptr, " ");
1333         if (!token)
1334                 return -EINVAL;
1335         if (kstrtou8(token, 0, &pstream.tsid))
1336                 return -EINVAL;
1337
1338         token = strsep(&sptr, " ");
1339         if (!token)
1340                 return -EINVAL;
1341         if (kstrtou16(token, 0, &val16))
1342                 return -EINVAL;
1343         pstream.nominal_msdu = cpu_to_le16(val16);
1344
1345         token = strsep(&sptr, " ");
1346         if (!token)
1347                 return -EINVAL;
1348         if (kstrtou16(token, 0, &val16))
1349                 return -EINVAL;
1350         pstream.max_msdu = cpu_to_le16(val16);
1351
1352         token = strsep(&sptr, " ");
1353         if (!token)
1354                 return -EINVAL;
1355         if (kstrtou32(token, 0, &val32))
1356                 return -EINVAL;
1357         pstream.min_data_rate = cpu_to_le32(val32);
1358
1359         token = strsep(&sptr, " ");
1360         if (!token)
1361                 return -EINVAL;
1362         if (kstrtou32(token, 0, &val32))
1363                 return -EINVAL;
1364         pstream.mean_data_rate = cpu_to_le32(val32);
1365
1366         token = strsep(&sptr, " ");
1367         if (!token)
1368                 return -EINVAL;
1369         if (kstrtou32(token, 0, &val32))
1370                 return -EINVAL;
1371         pstream.peak_data_rate = cpu_to_le32(val32);
1372
1373         token = strsep(&sptr, " ");
1374         if (!token)
1375                 return -EINVAL;
1376         if (kstrtou32(token, 0, &val32))
1377                 return -EINVAL;
1378         pstream.max_burst_size = cpu_to_le32(val32);
1379
1380         token = strsep(&sptr, " ");
1381         if (!token)
1382                 return -EINVAL;
1383         if (kstrtou32(token, 0, &val32))
1384                 return -EINVAL;
1385         pstream.delay_bound = cpu_to_le32(val32);
1386
1387         token = strsep(&sptr, " ");
1388         if (!token)
1389                 return -EINVAL;
1390         if (kstrtou32(token, 0, &val32))
1391                 return -EINVAL;
1392         pstream.min_phy_rate = cpu_to_le32(val32);
1393
1394         token = strsep(&sptr, " ");
1395         if (!token)
1396                 return -EINVAL;
1397         if (kstrtou32(token, 0, &val32))
1398                 return -EINVAL;
1399         pstream.sba = cpu_to_le32(val32);
1400
1401         token = strsep(&sptr, " ");
1402         if (!token)
1403                 return -EINVAL;
1404         if (kstrtou32(token, 0, &val32))
1405                 return -EINVAL;
1406         pstream.medium_time = cpu_to_le32(val32);
1407
1408         ath6kl_wmi_create_pstream_cmd(ar->wmi, vif->fw_vif_idx, &pstream);
1409
1410         return count;
1411 }
1412
1413 static const struct file_operations fops_create_qos = {
1414         .write = ath6kl_create_qos_write,
1415         .open = ath6kl_debugfs_open,
1416         .owner = THIS_MODULE,
1417         .llseek = default_llseek,
1418 };
1419
1420 static ssize_t ath6kl_delete_qos_write(struct file *file,
1421                                 const char __user *user_buf,
1422                                 size_t count, loff_t *ppos)
1423 {
1424
1425         struct ath6kl *ar = file->private_data;
1426         /* TODO: Findout vif */
1427         struct ath6kl_vif *vif = ar->vif;
1428         char buf[100];
1429         ssize_t len;
1430         char *sptr, *token;
1431         u8 traffic_class;
1432         u8 tsid;
1433
1434         len = min(count, sizeof(buf) - 1);
1435         if (copy_from_user(buf, user_buf, len))
1436                 return -EFAULT;
1437         buf[len] = '\0';
1438         sptr = buf;
1439
1440         token = strsep(&sptr, " ");
1441         if (!token)
1442                 return -EINVAL;
1443         if (kstrtou8(token, 0, &traffic_class))
1444                 return -EINVAL;
1445
1446         token = strsep(&sptr, " ");
1447         if (!token)
1448                 return -EINVAL;
1449         if (kstrtou8(token, 0, &tsid))
1450                 return -EINVAL;
1451
1452         ath6kl_wmi_delete_pstream_cmd(ar->wmi, vif->fw_vif_idx,
1453                                       traffic_class, tsid);
1454
1455         return count;
1456 }
1457
1458 static const struct file_operations fops_delete_qos = {
1459         .write = ath6kl_delete_qos_write,
1460         .open = ath6kl_debugfs_open,
1461         .owner = THIS_MODULE,
1462         .llseek = default_llseek,
1463 };
1464
1465 static ssize_t ath6kl_bgscan_int_write(struct file *file,
1466                                 const char __user *user_buf,
1467                                 size_t count, loff_t *ppos)
1468 {
1469         struct ath6kl *ar = file->private_data;
1470         u16 bgscan_int;
1471         char buf[32];
1472         ssize_t len;
1473
1474         len = min(count, sizeof(buf) - 1);
1475         if (copy_from_user(buf, user_buf, len))
1476                 return -EFAULT;
1477
1478         buf[len] = '\0';
1479         if (kstrtou16(buf, 0, &bgscan_int))
1480                 return -EINVAL;
1481
1482         if (bgscan_int == 0)
1483                 bgscan_int = 0xffff;
1484
1485         ath6kl_wmi_scanparams_cmd(ar->wmi, 0, 0, 0, bgscan_int, 0, 0, 0, 3,
1486                                   0, 0, 0);
1487
1488         return count;
1489 }
1490
1491 static const struct file_operations fops_bgscan_int = {
1492         .write = ath6kl_bgscan_int_write,
1493         .open = ath6kl_debugfs_open,
1494         .owner = THIS_MODULE,
1495         .llseek = default_llseek,
1496 };
1497
1498 int ath6kl_debug_init(struct ath6kl *ar)
1499 {
1500         ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE);
1501         if (ar->debug.fwlog_buf.buf == NULL)
1502                 return -ENOMEM;
1503
1504         ar->debug.fwlog_tmp = kmalloc(ATH6KL_FWLOG_SLOT_SIZE, GFP_KERNEL);
1505         if (ar->debug.fwlog_tmp == NULL) {
1506                 vfree(ar->debug.fwlog_buf.buf);
1507                 return -ENOMEM;
1508         }
1509
1510         spin_lock_init(&ar->debug.fwlog_lock);
1511
1512         /*
1513          * Actually we are lying here but don't know how to read the mask
1514          * value from the firmware.
1515          */
1516         ar->debug.fwlog_mask = 0;
1517
1518         ar->debugfs_phy = debugfs_create_dir("ath6kl",
1519                                              ar->wiphy->debugfsdir);
1520         if (!ar->debugfs_phy) {
1521                 vfree(ar->debug.fwlog_buf.buf);
1522                 kfree(ar->debug.fwlog_tmp);
1523                 return -ENOMEM;
1524         }
1525
1526         debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar,
1527                             &fops_tgt_stats);
1528
1529         debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar,
1530                             &fops_credit_dist_stats);
1531
1532         debugfs_create_file("endpoint_stats", S_IRUSR | S_IWUSR,
1533                             ar->debugfs_phy, ar, &fops_endpoint_stats);
1534
1535         debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar,
1536                             &fops_fwlog);
1537
1538         debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy,
1539                             ar, &fops_fwlog_mask);
1540
1541         debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1542                             &fops_diag_reg_read);
1543
1544         debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar,
1545                             &fops_reg_dump);
1546
1547         debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR,
1548                             ar->debugfs_phy, ar, &fops_lrssi_roam_threshold);
1549
1550         debugfs_create_file("reg_write", S_IRUSR | S_IWUSR,
1551                             ar->debugfs_phy, ar, &fops_diag_reg_write);
1552
1553         debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar,
1554                             &fops_war_stats);
1555
1556         debugfs_create_file("roam_table", S_IRUSR, ar->debugfs_phy, ar,
1557                             &fops_roam_table);
1558
1559         debugfs_create_file("force_roam", S_IWUSR, ar->debugfs_phy, ar,
1560                             &fops_force_roam);
1561
1562         debugfs_create_file("roam_mode", S_IWUSR, ar->debugfs_phy, ar,
1563                             &fops_roam_mode);
1564
1565         debugfs_create_file("keepalive", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1566                             &fops_keepalive);
1567
1568         debugfs_create_file("disconnect_timeout", S_IRUSR | S_IWUSR,
1569                             ar->debugfs_phy, ar, &fops_disconnect_timeout);
1570
1571         debugfs_create_file("create_qos", S_IWUSR, ar->debugfs_phy, ar,
1572                                 &fops_create_qos);
1573
1574         debugfs_create_file("delete_qos", S_IWUSR, ar->debugfs_phy, ar,
1575                                 &fops_delete_qos);
1576
1577         debugfs_create_file("bgscan_interval", S_IWUSR,
1578                                 ar->debugfs_phy, ar, &fops_bgscan_int);
1579
1580         return 0;
1581 }
1582
1583 void ath6kl_debug_cleanup(struct ath6kl *ar)
1584 {
1585         vfree(ar->debug.fwlog_buf.buf);
1586         kfree(ar->debug.fwlog_tmp);
1587         kfree(ar->debug.roam_tbl);
1588 }
1589
1590 #endif