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_SEND, "ctxt:%p dist:%p\n",
 184                    target->cred_dist_cntxt, NULL);
 185         ath6kl_dbg(ATH6KL_DBG_TRC, "credit distribution, total : %d, free : %d\n",
 186                    target->cred_dist_cntxt->total_avail_credits,
 187                    target->cred_dist_cntxt->cur_free_credits);
 188 }
 189
 190 static int ath6kl_debugfs_open(struct inode *inode, struct file *file)
 191 {
 192         file->private_data = inode->i_private;
 193         return 0;
 194 }
 195
 196 void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war)
 197 {
 198         switch (war) {
 199         case ATH6KL_WAR_INVALID_RATE:
 200                 ar->debug.war_stats.invalid_rate++;
 201                 break;
 202         }
 203 }
 204
 205 static ssize_t read_file_war_stats(struct file *file, char __user *user_buf,
 206                                    size_t count, loff_t *ppos)
 207 {
 208         struct ath6kl *ar = file->private_data;
 209         char *buf;
 210         unsigned int len = 0, buf_len = 1500;
 211         ssize_t ret_cnt;
 212
 213         buf = kzalloc(buf_len, GFP_KERNEL);
 214         if (!buf)
 215                 return -ENOMEM;
 216
 217         len += scnprintf(buf + len, buf_len - len, "\n");
 218         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 219                          "Workaround stats");
 220         len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 221                          "=================");
 222         len += scnprintf(buf + len, buf_len - len, "%20s %10u\n",
 223                          "Invalid rates", ar->debug.war_stats.invalid_rate);
 224
 225         if (WARN_ON(len > buf_len))
 226                 len = buf_len;
 227
 228         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 229
 230         kfree(buf);
 231         return ret_cnt;
 232 }
 233
 234 static const struct file_operations fops_war_stats = {
 235         .read = read_file_war_stats,
 236         .open = ath6kl_debugfs_open,
 237         .owner = THIS_MODULE,
 238         .llseek = default_llseek,
 239 };
 240
 241 static void ath6kl_debug_fwlog_add(struct ath6kl *ar, const void *buf,
 242                                    size_t buf_len)
 243 {
 244         struct circ_buf *fwlog = &ar->debug.fwlog_buf;
 245         size_t space;
 246         int i;
 247
 248         /* entries must all be equal size */
 249         if (WARN_ON(buf_len != ATH6KL_FWLOG_SLOT_SIZE))
 250                 return;
 251
 252         space = CIRC_SPACE(fwlog->head, fwlog->tail, ATH6KL_FWLOG_SIZE);
 253         if (space < buf_len)
 254                 /* discard oldest slot */
 255                 fwlog->tail = (fwlog->tail + ATH6KL_FWLOG_SLOT_SIZE) &
 256                         (ATH6KL_FWLOG_SIZE - 1);
 257
 258         for (i = 0; i < buf_len; i += space) {
 259                 space = CIRC_SPACE_TO_END(fwlog->head, fwlog->tail,
 260                                           ATH6KL_FWLOG_SIZE);
 261
 262                 if ((size_t) space > buf_len - i)
 263                         space = buf_len - i;
 264
 265                 memcpy(&fwlog->buf[fwlog->head], buf, space);
 266                 fwlog->head = (fwlog->head + space) & (ATH6KL_FWLOG_SIZE - 1);
 267         }
 268
 269 }
 270
 271 void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len)
 272 {
 273         struct ath6kl_fwlog_slot *slot = ar->debug.fwlog_tmp;
 274         size_t slot_len;
 275
 276         if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE))
 277                 return;
 278
 279         spin_lock_bh(&ar->debug.fwlog_lock);
 280
 281         slot->timestamp = cpu_to_le32(jiffies);
 282         slot->length = cpu_to_le32(len);
 283         memcpy(slot->payload, buf, len);
 284
 285         slot_len = sizeof(*slot) + len;
 286
 287         if (slot_len < ATH6KL_FWLOG_SLOT_SIZE)
 288                 memset(slot->payload + len, 0,
 289                        ATH6KL_FWLOG_SLOT_SIZE - slot_len);
 290
 291         ath6kl_debug_fwlog_add(ar, slot, ATH6KL_FWLOG_SLOT_SIZE);
 292
 293         spin_unlock_bh(&ar->debug.fwlog_lock);
 294 }
 295
 296 static bool ath6kl_debug_fwlog_empty(struct ath6kl *ar)
 297 {
 298         return CIRC_CNT(ar->debug.fwlog_buf.head,
 299                         ar->debug.fwlog_buf.tail,
 300                         ATH6KL_FWLOG_SLOT_SIZE) == 0;
 301 }
 302
 303 static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf,
 304                                  size_t count, loff_t *ppos)
 305 {
 306         struct ath6kl *ar = file->private_data;
 307         struct circ_buf *fwlog = &ar->debug.fwlog_buf;
 308         size_t len = 0, buf_len = count;
 309         ssize_t ret_cnt;
 310         char *buf;
 311         int ccnt;
 312
 313         buf = vmalloc(buf_len);
 314         if (!buf)
 315                 return -ENOMEM;
 316
 317         /* read undelivered logs from firmware */
 318         ath6kl_read_fwlogs(ar);
 319
 320         spin_lock_bh(&ar->debug.fwlog_lock);
 321
 322         while (len < buf_len && !ath6kl_debug_fwlog_empty(ar)) {
 323                 ccnt = CIRC_CNT_TO_END(fwlog->head, fwlog->tail,
 324                                        ATH6KL_FWLOG_SIZE);
 325
 326                 if ((size_t) ccnt > buf_len - len)
 327                         ccnt = buf_len - len;
 328
 329                 memcpy(buf + len, &fwlog->buf[fwlog->tail], ccnt);
 330                 len += ccnt;
 331
 332                 fwlog->tail = (fwlog->tail + ccnt) &
 333                         (ATH6KL_FWLOG_SIZE - 1);
 334         }
 335
 336         spin_unlock_bh(&ar->debug.fwlog_lock);
 337
 338         if (WARN_ON(len > buf_len))
 339                 len = buf_len;
 340
 341         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 342
 343         vfree(buf);
 344
 345         return ret_cnt;
 346 }
 347
 348 static const struct file_operations fops_fwlog = {
 349         .open = ath6kl_debugfs_open,
 350         .read = ath6kl_fwlog_read,
 351         .owner = THIS_MODULE,
 352         .llseek = default_llseek,
 353 };
 354
 355 static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf,
 356                                       size_t count, loff_t *ppos)
 357 {
 358         struct ath6kl *ar = file->private_data;
 359         char buf[16];
 360         int len;
 361
 362         len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask);
 363
 364         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 365 }
 366
 367 static ssize_t ath6kl_fwlog_mask_write(struct file *file,
 368                                        const char __user *user_buf,
 369                                        size_t count, loff_t *ppos)
 370 {
 371         struct ath6kl *ar = file->private_data;
 372         int ret;
 373
 374         ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask);
 375         if (ret)
 376                 return ret;
 377
 378         ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi,
 379                                                  ATH6KL_FWLOG_VALID_MASK,
 380                                                  ar->debug.fwlog_mask);
 381         if (ret)
 382                 return ret;
 383
 384         return count;
 385 }
 386
 387 static const struct file_operations fops_fwlog_mask = {
 388         .open = ath6kl_debugfs_open,
 389         .read = ath6kl_fwlog_mask_read,
 390         .write = ath6kl_fwlog_mask_write,
 391         .owner = THIS_MODULE,
 392         .llseek = default_llseek,
 393 };
 394
 395 static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
 396                                    size_t count, loff_t *ppos)
 397 {
 398         struct ath6kl *ar = file->private_data;
 399         struct target_stats *tgt_stats = &ar->target_stats;
 400         char *buf;
 401         unsigned int len = 0, buf_len = 1500;
 402         int i;
 403         long left;
 404         ssize_t ret_cnt;
 405
 406         buf = kzalloc(buf_len, GFP_KERNEL);
 407         if (!buf)
 408                 return -ENOMEM;
 409
 410         if (down_interruptible(&ar->sem)) {
 411                 kfree(buf);
 412                 return -EBUSY;
 413         }
 414
 415         set_bit(STATS_UPDATE_PEND, &ar->flag);
 416
 417         if (ath6kl_wmi_get_stats_cmd(ar->wmi)) {
 418                 up(&ar->sem);
 419                 kfree(buf);
 420                 return -EIO;
 421         }
 422
 423         left = wait_event_interruptible_timeout(ar->event_wq,
 424                                                 !test_bit(STATS_UPDATE_PEND,
 425                                                 &ar->flag), WMI_TIMEOUT);
 426
 427         up(&ar->sem);
 428
 429         if (left <= 0) {
 430                 kfree(buf);
 431                 return -ETIMEDOUT;
 432         }
 433
 434         len += scnprintf(buf + len, buf_len - len, "\n");
 435         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 436                          "Target Tx stats");
 437         len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 438                          "=================");
 439         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 440                          "Ucast packets", tgt_stats->tx_ucast_pkt);
 441         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 442                          "Bcast packets", tgt_stats->tx_bcast_pkt);
 443         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 444                          "Ucast byte", tgt_stats->tx_ucast_byte);
 445         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 446                          "Bcast byte", tgt_stats->tx_bcast_byte);
 447         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 448                          "Rts success cnt", tgt_stats->tx_rts_success_cnt);
 449         for (i = 0; i < 4; i++)
 450                 len += scnprintf(buf + len, buf_len - len,
 451                                  "%18s %d %10llu\n", "PER on ac",
 452                                  i, tgt_stats->tx_pkt_per_ac[i]);
 453         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 454                          "Error", tgt_stats->tx_err);
 455         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 456                          "Fail count", tgt_stats->tx_fail_cnt);
 457         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 458                          "Retry count", tgt_stats->tx_retry_cnt);
 459         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 460                          "Multi retry cnt", tgt_stats->tx_mult_retry_cnt);
 461         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 462                          "Rts fail cnt", tgt_stats->tx_rts_fail_cnt);
 463         len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n",
 464                          "TKIP counter measure used",
 465                          tgt_stats->tkip_cnter_measures_invoked);
 466
 467         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 468                          "Target Rx stats");
 469         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 470                          "=================");
 471
 472         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 473                          "Ucast packets", tgt_stats->rx_ucast_pkt);
 474         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 475                          "Ucast Rate", tgt_stats->rx_ucast_rate);
 476         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 477                          "Bcast packets", tgt_stats->rx_bcast_pkt);
 478         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 479                          "Ucast byte", tgt_stats->rx_ucast_byte);
 480         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 481                          "Bcast byte", tgt_stats->rx_bcast_byte);
 482         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 483                          "Fragmented pkt", tgt_stats->rx_frgment_pkt);
 484         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 485                          "Error", tgt_stats->rx_err);
 486         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 487                          "CRC Err", tgt_stats->rx_crc_err);
 488         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 489                          "Key chache miss", tgt_stats->rx_key_cache_miss);
 490         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 491                          "Decrypt Err", tgt_stats->rx_decrypt_err);
 492         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 493                          "Duplicate frame", tgt_stats->rx_dupl_frame);
 494         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 495                          "Tkip Mic failure", tgt_stats->tkip_local_mic_fail);
 496         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 497                          "TKIP format err", tgt_stats->tkip_fmt_err);
 498         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 499                          "CCMP format Err", tgt_stats->ccmp_fmt_err);
 500         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n",
 501                          "CCMP Replay Err", tgt_stats->ccmp_replays);
 502
 503         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 504                          "Misc Target stats");
 505         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 506                          "=================");
 507         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 508                          "Beacon Miss count", tgt_stats->cs_bmiss_cnt);
 509         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 510                          "Num Connects", tgt_stats->cs_connect_cnt);
 511         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 512                          "Num disconnects", tgt_stats->cs_discon_cnt);
 513         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 514                          "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi);
 515
 516         if (len > buf_len)
 517                 len = buf_len;
 518
 519         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 520
 521         kfree(buf);
 522         return ret_cnt;
 523 }
 524
 525 static const struct file_operations fops_tgt_stats = {
 526         .read = read_file_tgt_stats,
 527         .open = ath6kl_debugfs_open,
 528         .owner = THIS_MODULE,
 529         .llseek = default_llseek,
 530 };
 531
 532 #define print_credit_info(fmt_str, ep_list_field)               \
 533         (len += scnprintf(buf + len, buf_len - len, fmt_str,    \
 534                          ep_list->ep_list_field))
 535 #define CREDIT_INFO_DISPLAY_STRING_LEN  200
 536 #define CREDIT_INFO_LEN 128
 537
 538 static ssize_t read_file_credit_dist_stats(struct file *file,
 539                                            char __user *user_buf,
 540                                            size_t count, loff_t *ppos)
 541 {
 542         struct ath6kl *ar = file->private_data;
 543         struct htc_target *target = ar->htc_target;
 544         struct htc_endpoint_credit_dist *ep_list;
 545         char *buf;
 546         unsigned int buf_len, len = 0;
 547         ssize_t ret_cnt;
 548
 549         buf_len = CREDIT_INFO_DISPLAY_STRING_LEN +
 550                   get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN;
 551         buf = kzalloc(buf_len, GFP_KERNEL);
 552         if (!buf)
 553                 return -ENOMEM;
 554
 555         len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 556                          "Total Avail Credits: ",
 557                          target->cred_dist_cntxt->total_avail_credits);
 558         len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 559                          "Free credits :",
 560                          target->cred_dist_cntxt->cur_free_credits);
 561
 562         len += scnprintf(buf + len, buf_len - len,
 563                          " Epid  Flags    Cred_norm  Cred_min  Credits  Cred_assngd"
 564                          "  Seek_cred  Cred_sz  Cred_per_msg  Cred_to_dist"
 565                          "  qdepth\n");
 566
 567         list_for_each_entry(ep_list, &target->cred_dist_list, list) {
 568                 print_credit_info("  %2d", endpoint);
 569                 print_credit_info("%10x", dist_flags);
 570                 print_credit_info("%8d", cred_norm);
 571                 print_credit_info("%9d", cred_min);
 572                 print_credit_info("%9d", credits);
 573                 print_credit_info("%10d", cred_assngd);
 574                 print_credit_info("%13d", seek_cred);
 575                 print_credit_info("%12d", cred_sz);
 576                 print_credit_info("%9d", cred_per_msg);
 577                 print_credit_info("%14d", cred_to_dist);
 578                 len += scnprintf(buf + len, buf_len - len, "%12d\n",
 579                                  get_queue_depth(&((struct htc_endpoint *)
 580                                                  ep_list->htc_rsvd)->txq));
 581         }
 582
 583         if (len > buf_len)
 584                 len = buf_len;
 585
 586         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 587         kfree(buf);
 588         return ret_cnt;
 589 }
 590
 591 static const struct file_operations fops_credit_dist_stats = {
 592         .read = read_file_credit_dist_stats,
 593         .open = ath6kl_debugfs_open,
 594         .owner = THIS_MODULE,
 595         .llseek = default_llseek,
 596 };
 597
 598 static unsigned int print_endpoint_stat(struct htc_target *target, char *buf,
 599                                         unsigned int buf_len, unsigned int len,
 600                                         int offset, const char *name)
 601 {
 602         int i;
 603         struct htc_endpoint_stats *ep_st;
 604         u32 *counter;
 605
 606         len += scnprintf(buf + len, buf_len - len, "%s:", name);
 607         for (i = 0; i < ENDPOINT_MAX; i++) {
 608                 ep_st = &target->endpoint[i].ep_st;
 609                 counter = ((u32 *) ep_st) + (offset / 4);
 610                 len += scnprintf(buf + len, buf_len - len, " %u", *counter);
 611         }
 612         len += scnprintf(buf + len, buf_len - len, "\n");
 613
 614         return len;
 615 }
 616
 617 static ssize_t ath6kl_endpoint_stats_read(struct file *file,
 618                                           char __user *user_buf,
 619                                           size_t count, loff_t *ppos)
 620 {
 621         struct ath6kl *ar = file->private_data;
 622         struct htc_target *target = ar->htc_target;
 623         char *buf;
 624         unsigned int buf_len, len = 0;
 625         ssize_t ret_cnt;
 626
 627         buf_len = sizeof(struct htc_endpoint_stats) / sizeof(u32) *
 628                 (25 + ENDPOINT_MAX * 11);
 629         buf = kmalloc(buf_len, GFP_KERNEL);
 630         if (!buf)
 631                 return -ENOMEM;
 632
 633 #define EPSTAT(name)                                                    \
 634         len = print_endpoint_stat(target, buf, buf_len, len,            \
 635                                   offsetof(struct htc_endpoint_stats, name), \
 636                                   #name)
 637         EPSTAT(cred_low_indicate);
 638         EPSTAT(tx_issued);
 639         EPSTAT(tx_pkt_bundled);
 640         EPSTAT(tx_bundles);
 641         EPSTAT(tx_dropped);
 642         EPSTAT(tx_cred_rpt);
 643         EPSTAT(cred_rpt_from_rx);
 644         EPSTAT(cred_rpt_from_other);
 645         EPSTAT(cred_rpt_ep0);
 646         EPSTAT(cred_from_rx);
 647         EPSTAT(cred_from_other);
 648         EPSTAT(cred_from_ep0);
 649         EPSTAT(cred_cosumd);
 650         EPSTAT(cred_retnd);
 651         EPSTAT(rx_pkts);
 652         EPSTAT(rx_lkahds);
 653         EPSTAT(rx_bundl);
 654         EPSTAT(rx_bundle_lkahd);
 655         EPSTAT(rx_bundle_from_hdr);
 656         EPSTAT(rx_alloc_thresh_hit);
 657         EPSTAT(rxalloc_thresh_byte);
 658 #undef EPSTAT
 659
 660         if (len > buf_len)
 661                 len = buf_len;
 662
 663         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 664         kfree(buf);
 665         return ret_cnt;
 666 }
 667
 668 static ssize_t ath6kl_endpoint_stats_write(struct file *file,
 669                                            const char __user *user_buf,
 670                                            size_t count, loff_t *ppos)
 671 {
 672         struct ath6kl *ar = file->private_data;
 673         struct htc_target *target = ar->htc_target;
 674         int ret, i;
 675         u32 val;
 676         struct htc_endpoint_stats *ep_st;
 677
 678         ret = kstrtou32_from_user(user_buf, count, 0, &val);
 679         if (ret)
 680                 return ret;
 681         if (val == 0) {
 682                 for (i = 0; i < ENDPOINT_MAX; i++) {
 683                         ep_st = &target->endpoint[i].ep_st;
 684                         memset(ep_st, 0, sizeof(*ep_st));
 685                 }
 686         }
 687
 688         return count;
 689 }
 690
 691 static const struct file_operations fops_endpoint_stats = {
 692         .open = ath6kl_debugfs_open,
 693         .read = ath6kl_endpoint_stats_read,
 694         .write = ath6kl_endpoint_stats_write,
 695         .owner = THIS_MODULE,
 696         .llseek = default_llseek,
 697 };
 698
 699 static unsigned long ath6kl_get_num_reg(void)
 700 {
 701         int i;
 702         unsigned long n_reg = 0;
 703
 704         for (i = 0; i < ARRAY_SIZE(diag_reg); i++)
 705                 n_reg = n_reg +
 706                      (diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1;
 707
 708         return n_reg;
 709 }
 710
 711 static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr)
 712 {
 713         int i;
 714
 715         for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 716                 if (reg_addr >= diag_reg[i].reg_start &&
 717                     reg_addr <= diag_reg[i].reg_end)
 718                         return true;
 719         }
 720
 721         return false;
 722 }
 723
 724 static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf,
 725                                     size_t count, loff_t *ppos)
 726 {
 727         struct ath6kl *ar = file->private_data;
 728         u8 buf[50];
 729         unsigned int len = 0;
 730
 731         if (ar->debug.dbgfs_diag_reg)
 732                 len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n",
 733                                 ar->debug.dbgfs_diag_reg);
 734         else
 735                 len += scnprintf(buf + len, sizeof(buf) - len,
 736                                  "All diag registers\n");
 737
 738         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 739 }
 740
 741 static ssize_t ath6kl_regread_write(struct file *file,
 742                                     const char __user *user_buf,
 743                                     size_t count, loff_t *ppos)
 744 {
 745         struct ath6kl *ar = file->private_data;
 746         u8 buf[50];
 747         unsigned int len;
 748         unsigned long reg_addr;
 749
 750         len = min(count, sizeof(buf) - 1);
 751         if (copy_from_user(buf, user_buf, len))
 752                 return -EFAULT;
 753
 754         buf[len] = '\0';
 755
 756         if (strict_strtoul(buf, 0, &reg_addr))
 757                 return -EINVAL;
 758
 759         if ((reg_addr % 4) != 0)
 760                 return -EINVAL;
 761
 762         if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr))
 763                 return -EINVAL;
 764
 765         ar->debug.dbgfs_diag_reg = reg_addr;
 766
 767         return count;
 768 }
 769
 770 static const struct file_operations fops_diag_reg_read = {
 771         .read = ath6kl_regread_read,
 772         .write = ath6kl_regread_write,
 773         .open = ath6kl_debugfs_open,
 774         .owner = THIS_MODULE,
 775         .llseek = default_llseek,
 776 };
 777
 778 static int ath6kl_regdump_open(struct inode *inode, struct file *file)
 779 {
 780         struct ath6kl *ar = inode->i_private;
 781         u8 *buf;
 782         unsigned long int reg_len;
 783         unsigned int len = 0, n_reg;
 784         u32 addr;
 785         __le32 reg_val;
 786         int i, status;
 787
 788         /* Dump all the registers if no register is specified */
 789         if (!ar->debug.dbgfs_diag_reg)
 790                 n_reg = ath6kl_get_num_reg();
 791         else
 792                 n_reg = 1;
 793
 794         reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE;
 795         if (n_reg > 1)
 796                 reg_len += REGTYPE_STR_LEN;
 797
 798         buf = vmalloc(reg_len);
 799         if (!buf)
 800                 return -ENOMEM;
 801
 802         if (n_reg == 1) {
 803                 addr = ar->debug.dbgfs_diag_reg;
 804
 805                 status = ath6kl_diag_read32(ar,
 806                                 TARG_VTOP(ar->target_type, addr),
 807                                 (u32 *)&reg_val);
 808                 if (status)
 809                         goto fail_reg_read;
 810
 811                 len += scnprintf(buf + len, reg_len - len,
 812                                  "0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val));
 813                 goto done;
 814         }
 815
 816         for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 817                 len += scnprintf(buf + len, reg_len - len,
 818                                 "%s\n", diag_reg[i].reg_info);
 819                 for (addr = diag_reg[i].reg_start;
 820                      addr <= diag_reg[i].reg_end; addr += 4) {
 821                         status = ath6kl_diag_read32(ar,
 822                                         TARG_VTOP(ar->target_type, addr),
 823                                         (u32 *)&reg_val);
 824                         if (status)
 825                                 goto fail_reg_read;
 826
 827                         len += scnprintf(buf + len, reg_len - len,
 828                                         "0x%06x 0x%08x\n",
 829                                         addr, le32_to_cpu(reg_val));
 830                 }
 831         }
 832
 833 done:
 834         file->private_data = buf;
 835         return 0;
 836
 837 fail_reg_read:
 838         ath6kl_warn("Unable to read memory:%u\n", addr);
 839         vfree(buf);
 840         return -EIO;
 841 }
 842
 843 static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf,
 844                                   size_t count, loff_t *ppos)
 845 {
 846         u8 *buf = file->private_data;
 847         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
 848 }
 849
 850 static int ath6kl_regdump_release(struct inode *inode, struct file *file)
 851 {
 852         vfree(file->private_data);
 853         return 0;
 854 }
 855
 856 static const struct file_operations fops_reg_dump = {
 857         .open = ath6kl_regdump_open,
 858         .read = ath6kl_regdump_read,
 859         .release = ath6kl_regdump_release,
 860         .owner = THIS_MODULE,
 861         .llseek = default_llseek,
 862 };
 863
 864 static ssize_t ath6kl_lrssi_roam_write(struct file *file,
 865                                        const char __user *user_buf,
 866                                        size_t count, loff_t *ppos)
 867 {
 868         struct ath6kl *ar = file->private_data;
 869         unsigned long lrssi_roam_threshold;
 870         char buf[32];
 871         ssize_t len;
 872
 873         len = min(count, sizeof(buf) - 1);
 874         if (copy_from_user(buf, user_buf, len))
 875                 return -EFAULT;
 876
 877         buf[len] = '\0';
 878         if (strict_strtoul(buf, 0, &lrssi_roam_threshold))
 879                 return -EINVAL;
 880
 881         ar->lrssi_roam_threshold = lrssi_roam_threshold;
 882
 883         ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
 884
 885         return count;
 886 }
 887
 888 static ssize_t ath6kl_lrssi_roam_read(struct file *file,
 889                                       char __user *user_buf,
 890                                       size_t count, loff_t *ppos)
 891 {
 892         struct ath6kl *ar = file->private_data;
 893         char buf[32];
 894         unsigned int len;
 895
 896         len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold);
 897
 898         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 899 }
 900
 901 static const struct file_operations fops_lrssi_roam_threshold = {
 902         .read = ath6kl_lrssi_roam_read,
 903         .write = ath6kl_lrssi_roam_write,
 904         .open = ath6kl_debugfs_open,
 905         .owner = THIS_MODULE,
 906         .llseek = default_llseek,
 907 };
 908
 909 static ssize_t ath6kl_regwrite_read(struct file *file,
 910                                     char __user *user_buf,
 911                                     size_t count, loff_t *ppos)
 912 {
 913         struct ath6kl *ar = file->private_data;
 914         u8 buf[32];
 915         unsigned int len = 0;
 916
 917         len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n",
 918                         ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr);
 919
 920         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 921 }
 922
 923 static ssize_t ath6kl_regwrite_write(struct file *file,
 924                                      const char __user *user_buf,
 925                                      size_t count, loff_t *ppos)
 926 {
 927         struct ath6kl *ar = file->private_data;
 928         char buf[32];
 929         char *sptr, *token;
 930         unsigned int len = 0;
 931         u32 reg_addr, reg_val;
 932
 933         len = min(count, sizeof(buf) - 1);
 934         if (copy_from_user(buf, user_buf, len))
 935                 return -EFAULT;
 936
 937         buf[len] = '\0';
 938         sptr = buf;
 939
 940         token = strsep(&sptr, "=");
 941         if (!token)
 942                 return -EINVAL;
 943
 944         if (kstrtou32(token, 0, &reg_addr))
 945                 return -EINVAL;
 946
 947         if (!ath6kl_dbg_is_diag_reg_valid(reg_addr))
 948                 return -EINVAL;
 949
 950         if (kstrtou32(sptr, 0, &reg_val))
 951                 return -EINVAL;
 952
 953         ar->debug.diag_reg_addr_wr = reg_addr;
 954         ar->debug.diag_reg_val_wr = reg_val;
 955
 956         if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr,
 957                                 cpu_to_le32(ar->debug.diag_reg_val_wr)))
 958                 return -EIO;
 959
 960         return count;
 961 }
 962
 963 static const struct file_operations fops_diag_reg_write = {
 964         .read = ath6kl_regwrite_read,
 965         .write = ath6kl_regwrite_write,
 966         .open = ath6kl_debugfs_open,
 967         .owner = THIS_MODULE,
 968         .llseek = default_llseek,
 969 };
 970
 971 int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,
 972                                 size_t len)
 973 {
 974         const struct wmi_target_roam_tbl *tbl;
 975         u16 num_entries;
 976
 977         if (len < sizeof(*tbl))
 978                 return -EINVAL;
 979
 980         tbl = (const struct wmi_target_roam_tbl *) buf;
 981         num_entries = le16_to_cpu(tbl->num_entries);
 982         if (sizeof(*tbl) + num_entries * sizeof(struct wmi_bss_roam_info) >
 983             len)
 984                 return -EINVAL;
 985
 986         if (ar->debug.roam_tbl == NULL ||
 987             ar->debug.roam_tbl_len < (unsigned int) len) {
 988                 kfree(ar->debug.roam_tbl);
 989                 ar->debug.roam_tbl = kmalloc(len, GFP_ATOMIC);
 990                 if (ar->debug.roam_tbl == NULL)
 991                         return -ENOMEM;
 992         }
 993
 994         memcpy(ar->debug.roam_tbl, buf, len);
 995         ar->debug.roam_tbl_len = len;
 996
 997         if (test_bit(ROAM_TBL_PEND, &ar->flag)) {
 998                 clear_bit(ROAM_TBL_PEND, &ar->flag);
 999                 wake_up(&ar->event_wq);
1000         }
1001
1002         return 0;
1003 }
1004
1005 static ssize_t ath6kl_roam_table_read(struct file *file, char __user *user_buf,
1006                                       size_t count, loff_t *ppos)
1007 {
1008         struct ath6kl *ar = file->private_data;
1009         int ret;
1010         long left;
1011         struct wmi_target_roam_tbl *tbl;
1012         u16 num_entries, i;
1013         char *buf;
1014         unsigned int len, buf_len;
1015         ssize_t ret_cnt;
1016
1017         if (down_interruptible(&ar->sem))
1018                 return -EBUSY;
1019
1020         set_bit(ROAM_TBL_PEND, &ar->flag);
1021
1022         ret = ath6kl_wmi_get_roam_tbl_cmd(ar->wmi);
1023         if (ret) {
1024                 up(&ar->sem);
1025                 return ret;
1026         }
1027
1028         left = wait_event_interruptible_timeout(
1029                 ar->event_wq, !test_bit(ROAM_TBL_PEND, &ar->flag), WMI_TIMEOUT);
1030         up(&ar->sem);
1031
1032         if (left <= 0)
1033                 return -ETIMEDOUT;
1034
1035         if (ar->debug.roam_tbl == NULL)
1036                 return -ENOMEM;
1037
1038         tbl = (struct wmi_target_roam_tbl *) ar->debug.roam_tbl;
1039         num_entries = le16_to_cpu(tbl->num_entries);
1040
1041         buf_len = 100 + num_entries * 100;
1042         buf = kzalloc(buf_len, GFP_KERNEL);
1043         if (buf == NULL)
1044                 return -ENOMEM;
1045         len = 0;
1046         len += scnprintf(buf + len, buf_len - len,
1047                          "roam_mode=%u\n\n"
1048                          "# roam_util bssid rssi rssidt last_rssi util bias\n",
1049                          le16_to_cpu(tbl->roam_mode));
1050
1051         for (i = 0; i < num_entries; i++) {
1052                 struct wmi_bss_roam_info *info = &tbl->info[i];
1053                 len += scnprintf(buf + len, buf_len - len,
1054                                  "%d %pM %d %d %d %d %d\n",
1055                                  a_sle32_to_cpu(info->roam_util), info->bssid,
1056                                  info->rssi, info->rssidt, info->last_rssi,
1057                                  info->util, info->bias);
1058         }
1059
1060         if (len > buf_len)
1061                 len = buf_len;
1062
1063         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1064
1065         kfree(buf);
1066         return ret_cnt;
1067 }
1068
1069 static const struct file_operations fops_roam_table = {
1070         .read = ath6kl_roam_table_read,
1071         .open = ath6kl_debugfs_open,
1072         .owner = THIS_MODULE,
1073         .llseek = default_llseek,
1074 };
1075
1076 static ssize_t ath6kl_force_roam_write(struct file *file,
1077                                        const char __user *user_buf,
1078                                        size_t count, loff_t *ppos)
1079 {
1080         struct ath6kl *ar = file->private_data;
1081         int ret;
1082         char buf[20];
1083         size_t len;
1084         u8 bssid[ETH_ALEN];
1085         int i;
1086         int addr[ETH_ALEN];
1087
1088         len = min(count, sizeof(buf) - 1);
1089         if (copy_from_user(buf, user_buf, len))
1090                 return -EFAULT;
1091         buf[len] = '\0';
1092
1093         if (sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x",
1094                    &addr[0], &addr[1], &addr[2], &addr[3], &addr[4], &addr[5])
1095             != ETH_ALEN)
1096                 return -EINVAL;
1097         for (i = 0; i < ETH_ALEN; i++)
1098                 bssid[i] = addr[i];
1099
1100         ret = ath6kl_wmi_force_roam_cmd(ar->wmi, bssid);
1101         if (ret)
1102                 return ret;
1103
1104         return count;
1105 }
1106
1107 static const struct file_operations fops_force_roam = {
1108         .write = ath6kl_force_roam_write,
1109         .open = ath6kl_debugfs_open,
1110         .owner = THIS_MODULE,
1111         .llseek = default_llseek,
1112 };
1113
1114 static ssize_t ath6kl_roam_mode_write(struct file *file,
1115                                       const char __user *user_buf,
1116                                       size_t count, loff_t *ppos)
1117 {
1118         struct ath6kl *ar = file->private_data;
1119         int ret;
1120         char buf[20];
1121         size_t len;
1122         enum wmi_roam_mode mode;
1123
1124         len = min(count, sizeof(buf) - 1);
1125         if (copy_from_user(buf, user_buf, len))
1126                 return -EFAULT;
1127         buf[len] = '\0';
1128         if (len > 0 && buf[len - 1] == '\n')
1129                 buf[len - 1] = '\0';
1130
1131         if (strcasecmp(buf, "default") == 0)
1132                 mode = WMI_DEFAULT_ROAM_MODE;
1133         else if (strcasecmp(buf, "bssbias") == 0)
1134                 mode = WMI_HOST_BIAS_ROAM_MODE;
1135         else if (strcasecmp(buf, "lock") == 0)
1136                 mode = WMI_LOCK_BSS_MODE;
1137         else
1138                 return -EINVAL;
1139
1140         ret = ath6kl_wmi_set_roam_mode_cmd(ar->wmi, mode);
1141         if (ret)
1142                 return ret;
1143
1144         return count;
1145 }
1146
1147 static const struct file_operations fops_roam_mode = {
1148         .write = ath6kl_roam_mode_write,
1149         .open = ath6kl_debugfs_open,
1150         .owner = THIS_MODULE,
1151         .llseek = default_llseek,
1152 };
1153
1154 void ath6kl_debug_set_keepalive(struct ath6kl *ar, u8 keepalive)
1155 {
1156         ar->debug.keepalive = keepalive;
1157 }
1158
1159 static ssize_t ath6kl_keepalive_read(struct file *file, char __user *user_buf,
1160                                      size_t count, loff_t *ppos)
1161 {
1162         struct ath6kl *ar = file->private_data;
1163         char buf[16];
1164         int len;
1165
1166         len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.keepalive);
1167
1168         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1169 }
1170
1171 static ssize_t ath6kl_keepalive_write(struct file *file,
1172                                       const char __user *user_buf,
1173                                       size_t count, loff_t *ppos)
1174 {
1175         struct ath6kl *ar = file->private_data;
1176         int ret;
1177         u8 val;
1178
1179         ret = kstrtou8_from_user(user_buf, count, 0, &val);
1180         if (ret)
1181                 return ret;
1182
1183         ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, val);
1184         if (ret)
1185                 return ret;
1186
1187         return count;
1188 }
1189
1190 static const struct file_operations fops_keepalive = {
1191         .open = ath6kl_debugfs_open,
1192         .read = ath6kl_keepalive_read,
1193         .write = ath6kl_keepalive_write,
1194         .owner = THIS_MODULE,
1195         .llseek = default_llseek,
1196 };
1197
1198 void ath6kl_debug_set_disconnect_timeout(struct ath6kl *ar, u8 timeout)
1199 {
1200         ar->debug.disc_timeout = timeout;
1201 }
1202
1203 static ssize_t ath6kl_disconnect_timeout_read(struct file *file,
1204                                               char __user *user_buf,
1205                                               size_t count, loff_t *ppos)
1206 {
1207         struct ath6kl *ar = file->private_data;
1208         char buf[16];
1209         int len;
1210
1211         len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.disc_timeout);
1212
1213         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1214 }
1215
1216 static ssize_t ath6kl_disconnect_timeout_write(struct file *file,
1217                                                const char __user *user_buf,
1218                                                size_t count, loff_t *ppos)
1219 {
1220         struct ath6kl *ar = file->private_data;
1221         int ret;
1222         u8 val;
1223
1224         ret = kstrtou8_from_user(user_buf, count, 0, &val);
1225         if (ret)
1226                 return ret;
1227
1228         ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, val);
1229         if (ret)
1230                 return ret;
1231
1232         return count;
1233 }
1234
1235 static const struct file_operations fops_disconnect_timeout = {
1236         .open = ath6kl_debugfs_open,
1237         .read = ath6kl_disconnect_timeout_read,
1238         .write = ath6kl_disconnect_timeout_write,
1239         .owner = THIS_MODULE,
1240         .llseek = default_llseek,
1241 };
1242
1243 int ath6kl_debug_init(struct ath6kl *ar)
1244 {
1245         ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE);
1246         if (ar->debug.fwlog_buf.buf == NULL)
1247                 return -ENOMEM;
1248
1249         ar->debug.fwlog_tmp = kmalloc(ATH6KL_FWLOG_SLOT_SIZE, GFP_KERNEL);
1250         if (ar->debug.fwlog_tmp == NULL) {
1251                 vfree(ar->debug.fwlog_buf.buf);
1252                 return -ENOMEM;
1253         }
1254
1255         spin_lock_init(&ar->debug.fwlog_lock);
1256
1257         /*
1258          * Actually we are lying here but don't know how to read the mask
1259          * value from the firmware.
1260          */
1261         ar->debug.fwlog_mask = 0;
1262
1263         ar->debugfs_phy = debugfs_create_dir("ath6kl",
1264                                              ar->wdev->wiphy->debugfsdir);
1265         if (!ar->debugfs_phy) {
1266                 vfree(ar->debug.fwlog_buf.buf);
1267                 kfree(ar->debug.fwlog_tmp);
1268                 return -ENOMEM;
1269         }
1270
1271         debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar,
1272                             &fops_tgt_stats);
1273
1274         debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar,
1275                             &fops_credit_dist_stats);
1276
1277         debugfs_create_file("endpoint_stats", S_IRUSR | S_IWUSR,
1278                             ar->debugfs_phy, ar, &fops_endpoint_stats);
1279
1280         debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar,
1281                             &fops_fwlog);
1282
1283         debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy,
1284                             ar, &fops_fwlog_mask);
1285
1286         debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1287                             &fops_diag_reg_read);
1288
1289         debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar,
1290                             &fops_reg_dump);
1291
1292         debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR,
1293                             ar->debugfs_phy, ar, &fops_lrssi_roam_threshold);
1294
1295         debugfs_create_file("reg_write", S_IRUSR | S_IWUSR,
1296                             ar->debugfs_phy, ar, &fops_diag_reg_write);
1297
1298         debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar,
1299                             &fops_war_stats);
1300
1301         debugfs_create_file("roam_table", S_IRUSR, ar->debugfs_phy, ar,
1302                             &fops_roam_table);
1303
1304         debugfs_create_file("force_roam", S_IWUSR, ar->debugfs_phy, ar,
1305                             &fops_force_roam);
1306
1307         debugfs_create_file("roam_mode", S_IWUSR, ar->debugfs_phy, ar,
1308                             &fops_roam_mode);
1309
1310         debugfs_create_file("keepalive", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1311                             &fops_keepalive);
1312
1313         debugfs_create_file("disconnect_timeout", S_IRUSR | S_IWUSR,
1314                             ar->debugfs_phy, ar, &fops_disconnect_timeout);
1315
1316         return 0;
1317 }
1318
1319 void ath6kl_debug_cleanup(struct ath6kl *ar)
1320 {
1321         vfree(ar->debug.fwlog_buf.buf);
1322         kfree(ar->debug.fwlog_tmp);
1323         kfree(ar->debug.roam_tbl);
1324 }
1325
1326 #endif