drivers/net/wireless/ath/ath6kl/debug.c

   1 /*
   2  * Copyright (c) 2004-2011 Atheros Communications Inc.
   3  * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include "core.h"
  19
  20 #include <linux/skbuff.h>
  21 #include <linux/fs.h>
  22 #include <linux/vmalloc.h>
  23 #include <linux/export.h>
  24
  25 #include "debug.h"
  26 #include "target.h"
  27
  28 struct ath6kl_fwlog_slot {
  29         __le32 timestamp;
  30         __le32 length;
  31
  32         /* max ATH6KL_FWLOG_PAYLOAD_SIZE bytes */
  33         u8 payload[0];
  34 };
  35
  36 #define ATH6KL_FWLOG_MAX_ENTRIES 20
  37
  38 #define ATH6KL_FWLOG_VALID_MASK 0x1ffff
  39
  40 int ath6kl_printk(const char *level, const char *fmt, ...)
  41 {
  42         struct va_format vaf;
  43         va_list args;
  44         int rtn;
  45
  46         va_start(args, fmt);
  47
  48         vaf.fmt = fmt;
  49         vaf.va = &args;
  50
  51         rtn = printk("%sath6kl: %pV", level, &vaf);
  52
  53         va_end(args);
  54
  55         return rtn;
  56 }
  57 EXPORT_SYMBOL(ath6kl_printk);
  58
  59 int ath6kl_info(const char *fmt, ...)
  60 {
  61         struct va_format vaf = {
  62                 .fmt = fmt,
  63         };
  64         va_list args;
  65         int ret;
  66
  67         va_start(args, fmt);
  68         vaf.va = &args;
  69         ret = ath6kl_printk(KERN_INFO, "%pV", &vaf);
  70         trace_ath6kl_log_info(&vaf);
  71         va_end(args);
  72
  73         return ret;
  74 }
  75 EXPORT_SYMBOL(ath6kl_info);
  76
  77 int ath6kl_err(const char *fmt, ...)
  78 {
  79         struct va_format vaf = {
  80                 .fmt = fmt,
  81         };
  82         va_list args;
  83         int ret;
  84
  85         va_start(args, fmt);
  86         vaf.va = &args;
  87         ret = ath6kl_printk(KERN_ERR, "%pV", &vaf);
  88         trace_ath6kl_log_err(&vaf);
  89         va_end(args);
  90
  91         return ret;
  92 }
  93 EXPORT_SYMBOL(ath6kl_err);
  94
  95 int ath6kl_warn(const char *fmt, ...)
  96 {
  97         struct va_format vaf = {
  98                 .fmt = fmt,
  99         };
 100         va_list args;
 101         int ret;
 102
 103         va_start(args, fmt);
 104         vaf.va = &args;
 105         ret = ath6kl_printk(KERN_WARNING, "%pV", &vaf);
 106         trace_ath6kl_log_warn(&vaf);
 107         va_end(args);
 108
 109         return ret;
 110 }
 111 EXPORT_SYMBOL(ath6kl_warn);
 112
 113 #ifdef CONFIG_ATH6KL_DEBUG
 114
 115 void ath6kl_dbg(enum ATH6K_DEBUG_MASK mask, const char *fmt, ...)
 116 {
 117         struct va_format vaf;
 118         va_list args;
 119
 120         va_start(args, fmt);
 121
 122         vaf.fmt = fmt;
 123         vaf.va = &args;
 124
 125         if (debug_mask & mask)
 126                 ath6kl_printk(KERN_DEBUG, "%pV", &vaf);
 127
 128         trace_ath6kl_log_dbg(mask, &vaf);
 129
 130         va_end(args);
 131 }
 132 EXPORT_SYMBOL(ath6kl_dbg);
 133
 134 void ath6kl_dbg_dump(enum ATH6K_DEBUG_MASK mask,
 135                      const char *msg, const char *prefix,
 136                      const void *buf, size_t len)
 137 {
 138         if (debug_mask & mask) {
 139                 if (msg)
 140                         ath6kl_dbg(mask, "%s\n", msg);
 141
 142                 print_hex_dump_bytes(prefix, DUMP_PREFIX_OFFSET, buf, len);
 143         }
 144
 145         /* tracing code doesn't like null strings :/ */
 146         trace_ath6kl_log_dbg_dump(msg ? msg : "", prefix ? prefix : "",
 147                                   buf, len);
 148 }
 149 EXPORT_SYMBOL(ath6kl_dbg_dump);
 150
 151 #define REG_OUTPUT_LEN_PER_LINE 25
 152 #define REGTYPE_STR_LEN         100
 153
 154 struct ath6kl_diag_reg_info {
 155         u32 reg_start;
 156         u32 reg_end;
 157         const char *reg_info;
 158 };
 159
 160 static const struct ath6kl_diag_reg_info diag_reg[] = {
 161         { 0x20000, 0x200fc, "General DMA and Rx registers" },
 162         { 0x28000, 0x28900, "MAC PCU register & keycache" },
 163         { 0x20800, 0x20a40, "QCU" },
 164         { 0x21000, 0x212f0, "DCU" },
 165         { 0x4000,  0x42e4, "RTC" },
 166         { 0x540000, 0x540000 + (256 * 1024), "RAM" },
 167         { 0x29800, 0x2B210, "Base Band" },
 168         { 0x1C000, 0x1C748, "Analog" },
 169 };
 170
 171 void ath6kl_dump_registers(struct ath6kl_device *dev,
 172                            struct ath6kl_irq_proc_registers *irq_proc_reg,
 173                            struct ath6kl_irq_enable_reg *irq_enable_reg)
 174 {
 175
 176         ath6kl_dbg(ATH6KL_DBG_IRQ, ("<------- Register Table -------->\n"));
 177
 178         if (irq_proc_reg != NULL) {
 179                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 180                            "Host Int status:           0x%x\n",
 181                            irq_proc_reg->host_int_status);
 182                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 183                            "CPU Int status:            0x%x\n",
 184                            irq_proc_reg->cpu_int_status);
 185                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 186                            "Error Int status:          0x%x\n",
 187                            irq_proc_reg->error_int_status);
 188                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 189                            "Counter Int status:        0x%x\n",
 190                            irq_proc_reg->counter_int_status);
 191                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 192                            "Mbox Frame:                0x%x\n",
 193                            irq_proc_reg->mbox_frame);
 194                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 195                            "Rx Lookahead Valid:        0x%x\n",
 196                            irq_proc_reg->rx_lkahd_valid);
 197                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 198                            "Rx Lookahead 0:            0x%x\n",
 199                            irq_proc_reg->rx_lkahd[0]);
 200                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 201                            "Rx Lookahead 1:            0x%x\n",
 202                            irq_proc_reg->rx_lkahd[1]);
 203
 204                 if (dev->ar->mbox_info.gmbox_addr != 0) {
 205                         /*
 206                          * If the target supports GMBOX hardware, dump some
 207                          * additional state.
 208                          */
 209                         ath6kl_dbg(ATH6KL_DBG_IRQ,
 210                                    "GMBOX Host Int status 2:   0x%x\n",
 211                                    irq_proc_reg->host_int_status2);
 212                         ath6kl_dbg(ATH6KL_DBG_IRQ,
 213                                    "GMBOX RX Avail:            0x%x\n",
 214                                    irq_proc_reg->gmbox_rx_avail);
 215                         ath6kl_dbg(ATH6KL_DBG_IRQ,
 216                                    "GMBOX lookahead alias 0:   0x%x\n",
 217                                    irq_proc_reg->rx_gmbox_lkahd_alias[0]);
 218                         ath6kl_dbg(ATH6KL_DBG_IRQ,
 219                                    "GMBOX lookahead alias 1:   0x%x\n",
 220                                    irq_proc_reg->rx_gmbox_lkahd_alias[1]);
 221                 }
 222
 223         }
 224
 225         if (irq_enable_reg != NULL) {
 226                 ath6kl_dbg(ATH6KL_DBG_IRQ,
 227                            "Int status Enable:         0x%x\n",
 228                            irq_enable_reg->int_status_en);
 229                 ath6kl_dbg(ATH6KL_DBG_IRQ, "Counter Int status Enable: 0x%x\n",
 230                            irq_enable_reg->cntr_int_status_en);
 231         }
 232         ath6kl_dbg(ATH6KL_DBG_IRQ, "<------------------------------->\n");
 233 }
 234
 235 static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist)
 236 {
 237         ath6kl_dbg(ATH6KL_DBG_CREDIT,
 238                    "--- endpoint: %d  svc_id: 0x%X ---\n",
 239                    ep_dist->endpoint, ep_dist->svc_id);
 240         ath6kl_dbg(ATH6KL_DBG_CREDIT, " dist_flags     : 0x%X\n",
 241                    ep_dist->dist_flags);
 242         ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_norm      : %d\n",
 243                    ep_dist->cred_norm);
 244         ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_min       : %d\n",
 245                    ep_dist->cred_min);
 246         ath6kl_dbg(ATH6KL_DBG_CREDIT, " credits        : %d\n",
 247                    ep_dist->credits);
 248         ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_assngd    : %d\n",
 249                    ep_dist->cred_assngd);
 250         ath6kl_dbg(ATH6KL_DBG_CREDIT, " seek_cred      : %d\n",
 251                    ep_dist->seek_cred);
 252         ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_sz        : %d\n",
 253                    ep_dist->cred_sz);
 254         ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_per_msg   : %d\n",
 255                    ep_dist->cred_per_msg);
 256         ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_to_dist   : %d\n",
 257                    ep_dist->cred_to_dist);
 258         ath6kl_dbg(ATH6KL_DBG_CREDIT, " txq_depth      : %d\n",
 259                    get_queue_depth(&ep_dist->htc_ep->txq));
 260         ath6kl_dbg(ATH6KL_DBG_CREDIT,
 261                    "----------------------------------\n");
 262 }
 263
 264 /* FIXME: move to htc.c */
 265 void dump_cred_dist_stats(struct htc_target *target)
 266 {
 267         struct htc_endpoint_credit_dist *ep_list;
 268
 269         list_for_each_entry(ep_list, &target->cred_dist_list, list)
 270                 dump_cred_dist(ep_list);
 271
 272         ath6kl_dbg(ATH6KL_DBG_CREDIT,
 273                    "credit distribution total %d free %d\n",
 274                    target->credit_info->total_avail_credits,
 275                    target->credit_info->cur_free_credits);
 276 }
 277
 278 void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war)
 279 {
 280         switch (war) {
 281         case ATH6KL_WAR_INVALID_RATE:
 282                 ar->debug.war_stats.invalid_rate++;
 283                 break;
 284         }
 285 }
 286
 287 static ssize_t read_file_war_stats(struct file *file, char __user *user_buf,
 288                                    size_t count, loff_t *ppos)
 289 {
 290         struct ath6kl *ar = file->private_data;
 291         char *buf;
 292         unsigned int len = 0, buf_len = 1500;
 293         ssize_t ret_cnt;
 294
 295         buf = kzalloc(buf_len, GFP_KERNEL);
 296         if (!buf)
 297                 return -ENOMEM;
 298
 299         len += scnprintf(buf + len, buf_len - len, "\n");
 300         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 301                          "Workaround stats");
 302         len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 303                          "=================");
 304         len += scnprintf(buf + len, buf_len - len, "%20s %10u\n",
 305                          "Invalid rates", ar->debug.war_stats.invalid_rate);
 306
 307         if (WARN_ON(len > buf_len))
 308                 len = buf_len;
 309
 310         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 311
 312         kfree(buf);
 313         return ret_cnt;
 314 }
 315
 316 static const struct file_operations fops_war_stats = {
 317         .read = read_file_war_stats,
 318         .open = simple_open,
 319         .owner = THIS_MODULE,
 320         .llseek = default_llseek,
 321 };
 322
 323 void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len)
 324 {
 325         struct ath6kl_fwlog_slot *slot;
 326         struct sk_buff *skb;
 327         size_t slot_len;
 328
 329         if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE))
 330                 return;
 331
 332         slot_len = sizeof(*slot) + ATH6KL_FWLOG_PAYLOAD_SIZE;
 333
 334         skb = alloc_skb(slot_len, GFP_KERNEL);
 335         if (!skb)
 336                 return;
 337
 338         slot = (struct ath6kl_fwlog_slot *) skb_put(skb, slot_len);
 339         slot->timestamp = cpu_to_le32(jiffies);
 340         slot->length = cpu_to_le32(len);
 341         memcpy(slot->payload, buf, len);
 342
 343         /* Need to pad each record to fixed length ATH6KL_FWLOG_PAYLOAD_SIZE */
 344         memset(slot->payload + len, 0, ATH6KL_FWLOG_PAYLOAD_SIZE - len);
 345
 346         spin_lock(&ar->debug.fwlog_queue.lock);
 347
 348         __skb_queue_tail(&ar->debug.fwlog_queue, skb);
 349         complete(&ar->debug.fwlog_completion);
 350
 351         /* drop oldest entries */
 352         while (skb_queue_len(&ar->debug.fwlog_queue) >
 353                ATH6KL_FWLOG_MAX_ENTRIES) {
 354                 skb = __skb_dequeue(&ar->debug.fwlog_queue);
 355                 kfree_skb(skb);
 356         }
 357
 358         spin_unlock(&ar->debug.fwlog_queue.lock);
 359
 360         return;
 361 }
 362
 363 static int ath6kl_fwlog_open(struct inode *inode, struct file *file)
 364 {
 365         struct ath6kl *ar = inode->i_private;
 366
 367         if (ar->debug.fwlog_open)
 368                 return -EBUSY;
 369
 370         ar->debug.fwlog_open = true;
 371
 372         file->private_data = inode->i_private;
 373         return 0;
 374 }
 375
 376 static int ath6kl_fwlog_release(struct inode *inode, struct file *file)
 377 {
 378         struct ath6kl *ar = inode->i_private;
 379
 380         ar->debug.fwlog_open = false;
 381
 382         return 0;
 383 }
 384
 385 static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf,
 386                                  size_t count, loff_t *ppos)
 387 {
 388         struct ath6kl *ar = file->private_data;
 389         struct sk_buff *skb;
 390         ssize_t ret_cnt;
 391         size_t len = 0;
 392         char *buf;
 393
 394         buf = vmalloc(count);
 395         if (!buf)
 396                 return -ENOMEM;
 397
 398         /* read undelivered logs from firmware */
 399         ath6kl_read_fwlogs(ar);
 400
 401         spin_lock(&ar->debug.fwlog_queue.lock);
 402
 403         while ((skb = __skb_dequeue(&ar->debug.fwlog_queue))) {
 404                 if (skb->len > count - len) {
 405                         /* not enough space, put skb back and leave */
 406                         __skb_queue_head(&ar->debug.fwlog_queue, skb);
 407                         break;
 408                 }
 409
 410
 411                 memcpy(buf + len, skb->data, skb->len);
 412                 len += skb->len;
 413
 414                 kfree_skb(skb);
 415         }
 416
 417         spin_unlock(&ar->debug.fwlog_queue.lock);
 418
 419         /* FIXME: what to do if len == 0? */
 420
 421         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 422
 423         vfree(buf);
 424
 425         return ret_cnt;
 426 }
 427
 428 static const struct file_operations fops_fwlog = {
 429         .open = ath6kl_fwlog_open,
 430         .release = ath6kl_fwlog_release,
 431         .read = ath6kl_fwlog_read,
 432         .owner = THIS_MODULE,
 433         .llseek = default_llseek,
 434 };
 435
 436 static ssize_t ath6kl_fwlog_block_read(struct file *file,
 437                                        char __user *user_buf,
 438                                        size_t count,
 439                                        loff_t *ppos)
 440 {
 441         struct ath6kl *ar = file->private_data;
 442         struct sk_buff *skb;
 443         ssize_t ret_cnt;
 444         size_t len = 0, not_copied;
 445         char *buf;
 446         int ret;
 447
 448         buf = vmalloc(count);
 449         if (!buf)
 450                 return -ENOMEM;
 451
 452         spin_lock(&ar->debug.fwlog_queue.lock);
 453
 454         if (skb_queue_len(&ar->debug.fwlog_queue) == 0) {
 455                 /* we must init under queue lock */
 456                 init_completion(&ar->debug.fwlog_completion);
 457
 458                 spin_unlock(&ar->debug.fwlog_queue.lock);
 459
 460                 ret = wait_for_completion_interruptible(
 461                         &ar->debug.fwlog_completion);
 462                 if (ret == -ERESTARTSYS) {
 463                         vfree(buf);
 464                         return ret;
 465                 }
 466
 467                 spin_lock(&ar->debug.fwlog_queue.lock);
 468         }
 469
 470         while ((skb = __skb_dequeue(&ar->debug.fwlog_queue))) {
 471                 if (skb->len > count - len) {
 472                         /* not enough space, put skb back and leave */
 473                         __skb_queue_head(&ar->debug.fwlog_queue, skb);
 474                         break;
 475                 }
 476
 477
 478                 memcpy(buf + len, skb->data, skb->len);
 479                 len += skb->len;
 480
 481                 kfree_skb(skb);
 482         }
 483
 484         spin_unlock(&ar->debug.fwlog_queue.lock);
 485
 486         /* FIXME: what to do if len == 0? */
 487
 488         not_copied = copy_to_user(user_buf, buf, len);
 489         if (not_copied != 0) {
 490                 ret_cnt = -EFAULT;
 491                 goto out;
 492         }
 493
 494         *ppos = *ppos + len;
 495
 496         ret_cnt = len;
 497
 498 out:
 499         vfree(buf);
 500
 501         return ret_cnt;
 502 }
 503
 504 static const struct file_operations fops_fwlog_block = {
 505         .open = ath6kl_fwlog_open,
 506         .release = ath6kl_fwlog_release,
 507         .read = ath6kl_fwlog_block_read,
 508         .owner = THIS_MODULE,
 509         .llseek = default_llseek,
 510 };
 511
 512 static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf,
 513                                       size_t count, loff_t *ppos)
 514 {
 515         struct ath6kl *ar = file->private_data;
 516         char buf[16];
 517         int len;
 518
 519         len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask);
 520
 521         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 522 }
 523
 524 static ssize_t ath6kl_fwlog_mask_write(struct file *file,
 525                                        const char __user *user_buf,
 526                                        size_t count, loff_t *ppos)
 527 {
 528         struct ath6kl *ar = file->private_data;
 529         int ret;
 530
 531         ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask);
 532         if (ret)
 533                 return ret;
 534
 535         ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi,
 536                                                  ATH6KL_FWLOG_VALID_MASK,
 537                                                  ar->debug.fwlog_mask);
 538         if (ret)
 539                 return ret;
 540
 541         return count;
 542 }
 543
 544 static const struct file_operations fops_fwlog_mask = {
 545         .open = simple_open,
 546         .read = ath6kl_fwlog_mask_read,
 547         .write = ath6kl_fwlog_mask_write,
 548         .owner = THIS_MODULE,
 549         .llseek = default_llseek,
 550 };
 551
 552 static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
 553                                    size_t count, loff_t *ppos)
 554 {
 555         struct ath6kl *ar = file->private_data;
 556         struct ath6kl_vif *vif;
 557         struct target_stats *tgt_stats;
 558         char *buf;
 559         unsigned int len = 0, buf_len = 1500;
 560         int i;
 561         long left;
 562         ssize_t ret_cnt;
 563
 564         vif = ath6kl_vif_first(ar);
 565         if (!vif)
 566                 return -EIO;
 567
 568         tgt_stats = &vif->target_stats;
 569
 570         buf = kzalloc(buf_len, GFP_KERNEL);
 571         if (!buf)
 572                 return -ENOMEM;
 573
 574         if (down_interruptible(&ar->sem)) {
 575                 kfree(buf);
 576                 return -EBUSY;
 577         }
 578
 579         set_bit(STATS_UPDATE_PEND, &vif->flags);
 580
 581         if (ath6kl_wmi_get_stats_cmd(ar->wmi, 0)) {
 582                 up(&ar->sem);
 583                 kfree(buf);
 584                 return -EIO;
 585         }
 586
 587         left = wait_event_interruptible_timeout(ar->event_wq,
 588                                                 !test_bit(STATS_UPDATE_PEND,
 589                                                 &vif->flags), WMI_TIMEOUT);
 590
 591         up(&ar->sem);
 592
 593         if (left <= 0) {
 594                 kfree(buf);
 595                 return -ETIMEDOUT;
 596         }
 597
 598         len += scnprintf(buf + len, buf_len - len, "\n");
 599         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 600                          "Target Tx stats");
 601         len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 602                          "=================");
 603         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 604                          "Ucast packets", tgt_stats->tx_ucast_pkt);
 605         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 606                          "Bcast packets", tgt_stats->tx_bcast_pkt);
 607         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 608                          "Ucast byte", tgt_stats->tx_ucast_byte);
 609         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 610                          "Bcast byte", tgt_stats->tx_bcast_byte);
 611         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 612                          "Rts success cnt", tgt_stats->tx_rts_success_cnt);
 613         for (i = 0; i < 4; i++)
 614                 len += scnprintf(buf + len, buf_len - len,
 615                                  "%18s %d %10llu\n", "PER on ac",
 616                                  i, tgt_stats->tx_pkt_per_ac[i]);
 617         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 618                          "Error", tgt_stats->tx_err);
 619         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 620                          "Fail count", tgt_stats->tx_fail_cnt);
 621         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 622                          "Retry count", tgt_stats->tx_retry_cnt);
 623         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 624                          "Multi retry cnt", tgt_stats->tx_mult_retry_cnt);
 625         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 626                          "Rts fail cnt", tgt_stats->tx_rts_fail_cnt);
 627         len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n",
 628                          "TKIP counter measure used",
 629                          tgt_stats->tkip_cnter_measures_invoked);
 630
 631         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 632                          "Target Rx stats");
 633         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 634                          "=================");
 635
 636         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 637                          "Ucast packets", tgt_stats->rx_ucast_pkt);
 638         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 639                          "Ucast Rate", tgt_stats->rx_ucast_rate);
 640         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 641                          "Bcast packets", tgt_stats->rx_bcast_pkt);
 642         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 643                          "Ucast byte", tgt_stats->rx_ucast_byte);
 644         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 645                          "Bcast byte", tgt_stats->rx_bcast_byte);
 646         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 647                          "Fragmented pkt", tgt_stats->rx_frgment_pkt);
 648         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 649                          "Error", tgt_stats->rx_err);
 650         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 651                          "CRC Err", tgt_stats->rx_crc_err);
 652         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 653                          "Key chache miss", tgt_stats->rx_key_cache_miss);
 654         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 655                          "Decrypt Err", tgt_stats->rx_decrypt_err);
 656         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 657                          "Duplicate frame", tgt_stats->rx_dupl_frame);
 658         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 659                          "Tkip Mic failure", tgt_stats->tkip_local_mic_fail);
 660         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 661                          "TKIP format err", tgt_stats->tkip_fmt_err);
 662         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 663                          "CCMP format Err", tgt_stats->ccmp_fmt_err);
 664         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n",
 665                          "CCMP Replay Err", tgt_stats->ccmp_replays);
 666
 667         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 668                          "Misc Target stats");
 669         len += scnprintf(buf + len, buf_len - len, "%25s\n",
 670                          "=================");
 671         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 672                          "Beacon Miss count", tgt_stats->cs_bmiss_cnt);
 673         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 674                          "Num Connects", tgt_stats->cs_connect_cnt);
 675         len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 676                          "Num disconnects", tgt_stats->cs_discon_cnt);
 677         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 678                          "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi);
 679         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 680                          "ARP pkt received", tgt_stats->arp_received);
 681         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 682                          "ARP pkt matched", tgt_stats->arp_matched);
 683         len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 684                          "ARP pkt replied", tgt_stats->arp_replied);
 685
 686         if (len > buf_len)
 687                 len = buf_len;
 688
 689         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 690
 691         kfree(buf);
 692         return ret_cnt;
 693 }
 694
 695 static const struct file_operations fops_tgt_stats = {
 696         .read = read_file_tgt_stats,
 697         .open = simple_open,
 698         .owner = THIS_MODULE,
 699         .llseek = default_llseek,
 700 };
 701
 702 #define print_credit_info(fmt_str, ep_list_field)               \
 703         (len += scnprintf(buf + len, buf_len - len, fmt_str,    \
 704                          ep_list->ep_list_field))
 705 #define CREDIT_INFO_DISPLAY_STRING_LEN  200
 706 #define CREDIT_INFO_LEN 128
 707
 708 static ssize_t read_file_credit_dist_stats(struct file *file,
 709                                            char __user *user_buf,
 710                                            size_t count, loff_t *ppos)
 711 {
 712         struct ath6kl *ar = file->private_data;
 713         struct htc_target *target = ar->htc_target;
 714         struct htc_endpoint_credit_dist *ep_list;
 715         char *buf;
 716         unsigned int buf_len, len = 0;
 717         ssize_t ret_cnt;
 718
 719         buf_len = CREDIT_INFO_DISPLAY_STRING_LEN +
 720                   get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN;
 721         buf = kzalloc(buf_len, GFP_KERNEL);
 722         if (!buf)
 723                 return -ENOMEM;
 724
 725         len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 726                          "Total Avail Credits: ",
 727                          target->credit_info->total_avail_credits);
 728         len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 729                          "Free credits :",
 730                          target->credit_info->cur_free_credits);
 731
 732         len += scnprintf(buf + len, buf_len - len,
 733                          " Epid  Flags    Cred_norm  Cred_min  Credits  Cred_assngd"
 734                          "  Seek_cred  Cred_sz  Cred_per_msg  Cred_to_dist"
 735                          "  qdepth\n");
 736
 737         list_for_each_entry(ep_list, &target->cred_dist_list, list) {
 738                 print_credit_info("  %2d", endpoint);
 739                 print_credit_info("%10x", dist_flags);
 740                 print_credit_info("%8d", cred_norm);
 741                 print_credit_info("%9d", cred_min);
 742                 print_credit_info("%9d", credits);
 743                 print_credit_info("%10d", cred_assngd);
 744                 print_credit_info("%13d", seek_cred);
 745                 print_credit_info("%12d", cred_sz);
 746                 print_credit_info("%9d", cred_per_msg);
 747                 print_credit_info("%14d", cred_to_dist);
 748                 len += scnprintf(buf + len, buf_len - len, "%12d\n",
 749                                  get_queue_depth(&ep_list->htc_ep->txq));
 750         }
 751
 752         if (len > buf_len)
 753                 len = buf_len;
 754
 755         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 756         kfree(buf);
 757         return ret_cnt;
 758 }
 759
 760 static const struct file_operations fops_credit_dist_stats = {
 761         .read = read_file_credit_dist_stats,
 762         .open = simple_open,
 763         .owner = THIS_MODULE,
 764         .llseek = default_llseek,
 765 };
 766
 767 static unsigned int print_endpoint_stat(struct htc_target *target, char *buf,
 768                                         unsigned int buf_len, unsigned int len,
 769                                         int offset, const char *name)
 770 {
 771         int i;
 772         struct htc_endpoint_stats *ep_st;
 773         u32 *counter;
 774
 775         len += scnprintf(buf + len, buf_len - len, "%s:", name);
 776         for (i = 0; i < ENDPOINT_MAX; i++) {
 777                 ep_st = &target->endpoint[i].ep_st;
 778                 counter = ((u32 *) ep_st) + (offset / 4);
 779                 len += scnprintf(buf + len, buf_len - len, " %u", *counter);
 780         }
 781         len += scnprintf(buf + len, buf_len - len, "\n");
 782
 783         return len;
 784 }
 785
 786 static ssize_t ath6kl_endpoint_stats_read(struct file *file,
 787                                           char __user *user_buf,
 788                                           size_t count, loff_t *ppos)
 789 {
 790         struct ath6kl *ar = file->private_data;
 791         struct htc_target *target = ar->htc_target;
 792         char *buf;
 793         unsigned int buf_len, len = 0;
 794         ssize_t ret_cnt;
 795
 796         buf_len = sizeof(struct htc_endpoint_stats) / sizeof(u32) *
 797                 (25 + ENDPOINT_MAX * 11);
 798         buf = kmalloc(buf_len, GFP_KERNEL);
 799         if (!buf)
 800                 return -ENOMEM;
 801
 802 #define EPSTAT(name)                                                    \
 803         do {                                                            \
 804                 len = print_endpoint_stat(target, buf, buf_len, len,    \
 805                                           offsetof(struct htc_endpoint_stats, \
 806                                                    name),               \
 807                                           #name);                       \
 808         } while (0)
 809
 810         EPSTAT(cred_low_indicate);
 811         EPSTAT(tx_issued);
 812         EPSTAT(tx_pkt_bundled);
 813         EPSTAT(tx_bundles);
 814         EPSTAT(tx_dropped);
 815         EPSTAT(tx_cred_rpt);
 816         EPSTAT(cred_rpt_from_rx);
 817         EPSTAT(cred_rpt_from_other);
 818         EPSTAT(cred_rpt_ep0);
 819         EPSTAT(cred_from_rx);
 820         EPSTAT(cred_from_other);
 821         EPSTAT(cred_from_ep0);
 822         EPSTAT(cred_cosumd);
 823         EPSTAT(cred_retnd);
 824         EPSTAT(rx_pkts);
 825         EPSTAT(rx_lkahds);
 826         EPSTAT(rx_bundl);
 827         EPSTAT(rx_bundle_lkahd);
 828         EPSTAT(rx_bundle_from_hdr);
 829         EPSTAT(rx_alloc_thresh_hit);
 830         EPSTAT(rxalloc_thresh_byte);
 831 #undef EPSTAT
 832
 833         if (len > buf_len)
 834                 len = buf_len;
 835
 836         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 837         kfree(buf);
 838         return ret_cnt;
 839 }
 840
 841 static ssize_t ath6kl_endpoint_stats_write(struct file *file,
 842                                            const char __user *user_buf,
 843                                            size_t count, loff_t *ppos)
 844 {
 845         struct ath6kl *ar = file->private_data;
 846         struct htc_target *target = ar->htc_target;
 847         int ret, i;
 848         u32 val;
 849         struct htc_endpoint_stats *ep_st;
 850
 851         ret = kstrtou32_from_user(user_buf, count, 0, &val);
 852         if (ret)
 853                 return ret;
 854         if (val == 0) {
 855                 for (i = 0; i < ENDPOINT_MAX; i++) {
 856                         ep_st = &target->endpoint[i].ep_st;
 857                         memset(ep_st, 0, sizeof(*ep_st));
 858                 }
 859         }
 860
 861         return count;
 862 }
 863
 864 static const struct file_operations fops_endpoint_stats = {
 865         .open = simple_open,
 866         .read = ath6kl_endpoint_stats_read,
 867         .write = ath6kl_endpoint_stats_write,
 868         .owner = THIS_MODULE,
 869         .llseek = default_llseek,
 870 };
 871
 872 static unsigned long ath6kl_get_num_reg(void)
 873 {
 874         int i;
 875         unsigned long n_reg = 0;
 876
 877         for (i = 0; i < ARRAY_SIZE(diag_reg); i++)
 878                 n_reg = n_reg +
 879                      (diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1;
 880
 881         return n_reg;
 882 }
 883
 884 static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr)
 885 {
 886         int i;
 887
 888         for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 889                 if (reg_addr >= diag_reg[i].reg_start &&
 890                     reg_addr <= diag_reg[i].reg_end)
 891                         return true;
 892         }
 893
 894         return false;
 895 }
 896
 897 static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf,
 898                                     size_t count, loff_t *ppos)
 899 {
 900         struct ath6kl *ar = file->private_data;
 901         u8 buf[50];
 902         unsigned int len = 0;
 903
 904         if (ar->debug.dbgfs_diag_reg)
 905                 len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n",
 906                                 ar->debug.dbgfs_diag_reg);
 907         else
 908                 len += scnprintf(buf + len, sizeof(buf) - len,
 909                                  "All diag registers\n");
 910
 911         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 912 }
 913
 914 static ssize_t ath6kl_regread_write(struct file *file,
 915                                     const char __user *user_buf,
 916                                     size_t count, loff_t *ppos)
 917 {
 918         struct ath6kl *ar = file->private_data;
 919         unsigned long reg_addr;
 920
 921         if (kstrtoul_from_user(user_buf, count, 0, &reg_addr))
 922                 return -EINVAL;
 923
 924         if ((reg_addr % 4) != 0)
 925                 return -EINVAL;
 926
 927         if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr))
 928                 return -EINVAL;
 929
 930         ar->debug.dbgfs_diag_reg = reg_addr;
 931
 932         return count;
 933 }
 934
 935 static const struct file_operations fops_diag_reg_read = {
 936         .read = ath6kl_regread_read,
 937         .write = ath6kl_regread_write,
 938         .open = simple_open,
 939         .owner = THIS_MODULE,
 940         .llseek = default_llseek,
 941 };
 942
 943 static int ath6kl_regdump_open(struct inode *inode, struct file *file)
 944 {
 945         struct ath6kl *ar = inode->i_private;
 946         u8 *buf;
 947         unsigned long int reg_len;
 948         unsigned int len = 0, n_reg;
 949         u32 addr;
 950         __le32 reg_val;
 951         int i, status;
 952
 953         /* Dump all the registers if no register is specified */
 954         if (!ar->debug.dbgfs_diag_reg)
 955                 n_reg = ath6kl_get_num_reg();
 956         else
 957                 n_reg = 1;
 958
 959         reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE;
 960         if (n_reg > 1)
 961                 reg_len += REGTYPE_STR_LEN;
 962
 963         buf = vmalloc(reg_len);
 964         if (!buf)
 965                 return -ENOMEM;
 966
 967         if (n_reg == 1) {
 968                 addr = ar->debug.dbgfs_diag_reg;
 969
 970                 status = ath6kl_diag_read32(ar,
 971                                 TARG_VTOP(ar->target_type, addr),
 972                                 (u32 *)&reg_val);
 973                 if (status)
 974                         goto fail_reg_read;
 975
 976                 len += scnprintf(buf + len, reg_len - len,
 977                                  "0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val));
 978                 goto done;
 979         }
 980
 981         for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 982                 len += scnprintf(buf + len, reg_len - len,
 983                                 "%s\n", diag_reg[i].reg_info);
 984                 for (addr = diag_reg[i].reg_start;
 985                      addr <= diag_reg[i].reg_end; addr += 4) {
 986                         status = ath6kl_diag_read32(ar,
 987                                         TARG_VTOP(ar->target_type, addr),
 988                                         (u32 *)&reg_val);
 989                         if (status)
 990                                 goto fail_reg_read;
 991
 992                         len += scnprintf(buf + len, reg_len - len,
 993                                         "0x%06x 0x%08x\n",
 994                                         addr, le32_to_cpu(reg_val));
 995                 }
 996         }
 997
 998 done:
 999         file->private_data = buf;
1000         return 0;
1001
1002 fail_reg_read:
1003         ath6kl_warn("Unable to read memory:%u\n", addr);
1004         vfree(buf);
1005         return -EIO;
1006 }
1007
1008 static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf,
1009                                   size_t count, loff_t *ppos)
1010 {
1011         u8 *buf = file->private_data;
1012         return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
1013 }
1014
1015 static int ath6kl_regdump_release(struct inode *inode, struct file *file)
1016 {
1017         vfree(file->private_data);
1018         return 0;
1019 }
1020
1021 static const struct file_operations fops_reg_dump = {
1022         .open = ath6kl_regdump_open,
1023         .read = ath6kl_regdump_read,
1024         .release = ath6kl_regdump_release,
1025         .owner = THIS_MODULE,
1026         .llseek = default_llseek,
1027 };
1028
1029 static ssize_t ath6kl_lrssi_roam_write(struct file *file,
1030                                        const char __user *user_buf,
1031                                        size_t count, loff_t *ppos)
1032 {
1033         struct ath6kl *ar = file->private_data;
1034         unsigned long lrssi_roam_threshold;
1035
1036         if (kstrtoul_from_user(user_buf, count, 0, &lrssi_roam_threshold))
1037                 return -EINVAL;
1038
1039         ar->lrssi_roam_threshold = lrssi_roam_threshold;
1040
1041         ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
1042
1043         return count;
1044 }
1045
1046 static ssize_t ath6kl_lrssi_roam_read(struct file *file,
1047                                       char __user *user_buf,
1048                                       size_t count, loff_t *ppos)
1049 {
1050         struct ath6kl *ar = file->private_data;
1051         char buf[32];
1052         unsigned int len;
1053
1054         len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold);
1055
1056         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1057 }
1058
1059 static const struct file_operations fops_lrssi_roam_threshold = {
1060         .read = ath6kl_lrssi_roam_read,
1061         .write = ath6kl_lrssi_roam_write,
1062         .open = simple_open,
1063         .owner = THIS_MODULE,
1064         .llseek = default_llseek,
1065 };
1066
1067 static ssize_t ath6kl_regwrite_read(struct file *file,
1068                                     char __user *user_buf,
1069                                     size_t count, loff_t *ppos)
1070 {
1071         struct ath6kl *ar = file->private_data;
1072         u8 buf[32];
1073         unsigned int len = 0;
1074
1075         len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n",
1076                         ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr);
1077
1078         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1079 }
1080
1081 static ssize_t ath6kl_regwrite_write(struct file *file,
1082                                      const char __user *user_buf,
1083                                      size_t count, loff_t *ppos)
1084 {
1085         struct ath6kl *ar = file->private_data;
1086         char buf[32];
1087         char *sptr, *token;
1088         unsigned int len = 0;
1089         u32 reg_addr, reg_val;
1090
1091         len = min(count, sizeof(buf) - 1);
1092         if (copy_from_user(buf, user_buf, len))
1093                 return -EFAULT;
1094
1095         buf[len] = '\0';
1096         sptr = buf;
1097
1098         token = strsep(&sptr, "=");
1099         if (!token)
1100                 return -EINVAL;
1101
1102         if (kstrtou32(token, 0, &reg_addr))
1103                 return -EINVAL;
1104
1105         if (!ath6kl_dbg_is_diag_reg_valid(reg_addr))
1106                 return -EINVAL;
1107
1108         if (kstrtou32(sptr, 0, &reg_val))
1109                 return -EINVAL;
1110
1111         ar->debug.diag_reg_addr_wr = reg_addr;
1112         ar->debug.diag_reg_val_wr = reg_val;
1113
1114         if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr,
1115                                 cpu_to_le32(ar->debug.diag_reg_val_wr)))
1116                 return -EIO;
1117
1118         return count;
1119 }
1120
1121 static const struct file_operations fops_diag_reg_write = {
1122         .read = ath6kl_regwrite_read,
1123         .write = ath6kl_regwrite_write,
1124         .open = simple_open,
1125         .owner = THIS_MODULE,
1126         .llseek = default_llseek,
1127 };
1128
1129 int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,
1130                                 size_t len)
1131 {
1132         const struct wmi_target_roam_tbl *tbl;
1133         u16 num_entries;
1134
1135         if (len < sizeof(*tbl))
1136                 return -EINVAL;
1137
1138         tbl = (const struct wmi_target_roam_tbl *) buf;
1139         num_entries = le16_to_cpu(tbl->num_entries);
1140         if (sizeof(*tbl) + num_entries * sizeof(struct wmi_bss_roam_info) >
1141             len)
1142                 return -EINVAL;
1143
1144         if (ar->debug.roam_tbl == NULL ||
1145             ar->debug.roam_tbl_len < (unsigned int) len) {
1146                 kfree(ar->debug.roam_tbl);
1147                 ar->debug.roam_tbl = kmalloc(len, GFP_ATOMIC);
1148                 if (ar->debug.roam_tbl == NULL)
1149                         return -ENOMEM;
1150         }
1151
1152         memcpy(ar->debug.roam_tbl, buf, len);
1153         ar->debug.roam_tbl_len = len;
1154
1155         if (test_bit(ROAM_TBL_PEND, &ar->flag)) {
1156                 clear_bit(ROAM_TBL_PEND, &ar->flag);
1157                 wake_up(&ar->event_wq);
1158         }
1159
1160         return 0;
1161 }
1162
1163 static ssize_t ath6kl_roam_table_read(struct file *file, char __user *user_buf,
1164                                       size_t count, loff_t *ppos)
1165 {
1166         struct ath6kl *ar = file->private_data;
1167         int ret;
1168         long left;
1169         struct wmi_target_roam_tbl *tbl;
1170         u16 num_entries, i;
1171         char *buf;
1172         unsigned int len, buf_len;
1173         ssize_t ret_cnt;
1174
1175         if (down_interruptible(&ar->sem))
1176                 return -EBUSY;
1177
1178         set_bit(ROAM_TBL_PEND, &ar->flag);
1179
1180         ret = ath6kl_wmi_get_roam_tbl_cmd(ar->wmi);
1181         if (ret) {
1182                 up(&ar->sem);
1183                 return ret;
1184         }
1185
1186         left = wait_event_interruptible_timeout(
1187                 ar->event_wq, !test_bit(ROAM_TBL_PEND, &ar->flag), WMI_TIMEOUT);
1188         up(&ar->sem);
1189
1190         if (left <= 0)
1191                 return -ETIMEDOUT;
1192
1193         if (ar->debug.roam_tbl == NULL)
1194                 return -ENOMEM;
1195
1196         tbl = (struct wmi_target_roam_tbl *) ar->debug.roam_tbl;
1197         num_entries = le16_to_cpu(tbl->num_entries);
1198
1199         buf_len = 100 + num_entries * 100;
1200         buf = kzalloc(buf_len, GFP_KERNEL);
1201         if (buf == NULL)
1202                 return -ENOMEM;
1203         len = 0;
1204         len += scnprintf(buf + len, buf_len - len,
1205                          "roam_mode=%u\n\n"
1206                          "# roam_util bssid rssi rssidt last_rssi util bias\n",
1207                          le16_to_cpu(tbl->roam_mode));
1208
1209         for (i = 0; i < num_entries; i++) {
1210                 struct wmi_bss_roam_info *info = &tbl->info[i];
1211                 len += scnprintf(buf + len, buf_len - len,
1212                                  "%d %pM %d %d %d %d %d\n",
1213                                  a_sle32_to_cpu(info->roam_util), info->bssid,
1214                                  info->rssi, info->rssidt, info->last_rssi,
1215                                  info->util, info->bias);
1216         }
1217
1218         if (len > buf_len)
1219                 len = buf_len;
1220
1221         ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1222
1223         kfree(buf);
1224         return ret_cnt;
1225 }
1226
1227 static const struct file_operations fops_roam_table = {
1228         .read = ath6kl_roam_table_read,
1229         .open = simple_open,
1230         .owner = THIS_MODULE,
1231         .llseek = default_llseek,
1232 };
1233
1234 static ssize_t ath6kl_force_roam_write(struct file *file,
1235                                        const char __user *user_buf,
1236                                        size_t count, loff_t *ppos)
1237 {
1238         struct ath6kl *ar = file->private_data;
1239         int ret;
1240         char buf[20];
1241         size_t len;
1242         u8 bssid[ETH_ALEN];
1243
1244         len = min(count, sizeof(buf) - 1);
1245         if (copy_from_user(buf, user_buf, len))
1246                 return -EFAULT;
1247         buf[len] = '\0';
1248
1249         if (!mac_pton(buf, bssid))
1250                 return -EINVAL;
1251
1252         ret = ath6kl_wmi_force_roam_cmd(ar->wmi, bssid);
1253         if (ret)
1254                 return ret;
1255
1256         return count;
1257 }
1258
1259 static const struct file_operations fops_force_roam = {
1260         .write = ath6kl_force_roam_write,
1261         .open = simple_open,
1262         .owner = THIS_MODULE,
1263         .llseek = default_llseek,
1264 };
1265
1266 static ssize_t ath6kl_roam_mode_write(struct file *file,
1267                                       const char __user *user_buf,
1268                                       size_t count, loff_t *ppos)
1269 {
1270         struct ath6kl *ar = file->private_data;
1271         int ret;
1272         char buf[20];
1273         size_t len;
1274         enum wmi_roam_mode mode;
1275
1276         len = min(count, sizeof(buf) - 1);
1277         if (copy_from_user(buf, user_buf, len))
1278                 return -EFAULT;
1279         buf[len] = '\0';
1280         if (len > 0 && buf[len - 1] == '\n')
1281                 buf[len - 1] = '\0';
1282
1283         if (strcasecmp(buf, "default") == 0)
1284                 mode = WMI_DEFAULT_ROAM_MODE;
1285         else if (strcasecmp(buf, "bssbias") == 0)
1286                 mode = WMI_HOST_BIAS_ROAM_MODE;
1287         else if (strcasecmp(buf, "lock") == 0)
1288                 mode = WMI_LOCK_BSS_MODE;
1289         else
1290                 return -EINVAL;
1291
1292         ret = ath6kl_wmi_set_roam_mode_cmd(ar->wmi, mode);
1293         if (ret)
1294                 return ret;
1295
1296         return count;
1297 }
1298
1299 static const struct file_operations fops_roam_mode = {
1300         .write = ath6kl_roam_mode_write,
1301         .open = simple_open,
1302         .owner = THIS_MODULE,
1303         .llseek = default_llseek,
1304 };
1305
1306 void ath6kl_debug_set_keepalive(struct ath6kl *ar, u8 keepalive)
1307 {
1308         ar->debug.keepalive = keepalive;
1309 }
1310
1311 static ssize_t ath6kl_keepalive_read(struct file *file, char __user *user_buf,
1312                                      size_t count, loff_t *ppos)
1313 {
1314         struct ath6kl *ar = file->private_data;
1315         char buf[16];
1316         int len;
1317
1318         len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.keepalive);
1319
1320         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1321 }
1322
1323 static ssize_t ath6kl_keepalive_write(struct file *file,
1324                                       const char __user *user_buf,
1325                                       size_t count, loff_t *ppos)
1326 {
1327         struct ath6kl *ar = file->private_data;
1328         int ret;
1329         u8 val;
1330
1331         ret = kstrtou8_from_user(user_buf, count, 0, &val);
1332         if (ret)
1333                 return ret;
1334
1335         ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, 0, val);
1336         if (ret)
1337                 return ret;
1338
1339         return count;
1340 }
1341
1342 static const struct file_operations fops_keepalive = {
1343         .open = simple_open,
1344         .read = ath6kl_keepalive_read,
1345         .write = ath6kl_keepalive_write,
1346         .owner = THIS_MODULE,
1347         .llseek = default_llseek,
1348 };
1349
1350 void ath6kl_debug_set_disconnect_timeout(struct ath6kl *ar, u8 timeout)
1351 {
1352         ar->debug.disc_timeout = timeout;
1353 }
1354
1355 static ssize_t ath6kl_disconnect_timeout_read(struct file *file,
1356                                               char __user *user_buf,
1357                                               size_t count, loff_t *ppos)
1358 {
1359         struct ath6kl *ar = file->private_data;
1360         char buf[16];
1361         int len;
1362
1363         len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.disc_timeout);
1364
1365         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1366 }
1367
1368 static ssize_t ath6kl_disconnect_timeout_write(struct file *file,
1369                                                const char __user *user_buf,
1370                                                size_t count, loff_t *ppos)
1371 {
1372         struct ath6kl *ar = file->private_data;
1373         int ret;
1374         u8 val;
1375
1376         ret = kstrtou8_from_user(user_buf, count, 0, &val);
1377         if (ret)
1378                 return ret;
1379
1380         ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, 0, val);
1381         if (ret)
1382                 return ret;
1383
1384         return count;
1385 }
1386
1387 static const struct file_operations fops_disconnect_timeout = {
1388         .open = simple_open,
1389         .read = ath6kl_disconnect_timeout_read,
1390         .write = ath6kl_disconnect_timeout_write,
1391         .owner = THIS_MODULE,
1392         .llseek = default_llseek,
1393 };
1394
1395 static ssize_t ath6kl_create_qos_write(struct file *file,
1396                                                 const char __user *user_buf,
1397                                                 size_t count, loff_t *ppos)
1398 {
1399
1400         struct ath6kl *ar = file->private_data;
1401         struct ath6kl_vif *vif;
1402         char buf[200];
1403         ssize_t len;
1404         char *sptr, *token;
1405         struct wmi_create_pstream_cmd pstream;
1406         u32 val32;
1407         u16 val16;
1408
1409         vif = ath6kl_vif_first(ar);
1410         if (!vif)
1411                 return -EIO;
1412
1413         len = min(count, sizeof(buf) - 1);
1414         if (copy_from_user(buf, user_buf, len))
1415                 return -EFAULT;
1416         buf[len] = '\0';
1417         sptr = buf;
1418
1419         token = strsep(&sptr, " ");
1420         if (!token)
1421                 return -EINVAL;
1422         if (kstrtou8(token, 0, &pstream.user_pri))
1423                 return -EINVAL;
1424
1425         token = strsep(&sptr, " ");
1426         if (!token)
1427                 return -EINVAL;
1428         if (kstrtou8(token, 0, &pstream.traffic_direc))
1429                 return -EINVAL;
1430
1431         token = strsep(&sptr, " ");
1432         if (!token)
1433                 return -EINVAL;
1434         if (kstrtou8(token, 0, &pstream.traffic_class))
1435                 return -EINVAL;
1436
1437         token = strsep(&sptr, " ");
1438         if (!token)
1439                 return -EINVAL;
1440         if (kstrtou8(token, 0, &pstream.traffic_type))
1441                 return -EINVAL;
1442
1443         token = strsep(&sptr, " ");
1444         if (!token)
1445                 return -EINVAL;
1446         if (kstrtou8(token, 0, &pstream.voice_psc_cap))
1447                 return -EINVAL;
1448
1449         token = strsep(&sptr, " ");
1450         if (!token)
1451                 return -EINVAL;
1452         if (kstrtou32(token, 0, &val32))
1453                 return -EINVAL;
1454         pstream.min_service_int = cpu_to_le32(val32);
1455
1456         token = strsep(&sptr, " ");
1457         if (!token)
1458                 return -EINVAL;
1459         if (kstrtou32(token, 0, &val32))
1460                 return -EINVAL;
1461         pstream.max_service_int = cpu_to_le32(val32);
1462
1463         token = strsep(&sptr, " ");
1464         if (!token)
1465                 return -EINVAL;
1466         if (kstrtou32(token, 0, &val32))
1467                 return -EINVAL;
1468         pstream.inactivity_int = cpu_to_le32(val32);
1469
1470         token = strsep(&sptr, " ");
1471         if (!token)
1472                 return -EINVAL;
1473         if (kstrtou32(token, 0, &val32))
1474                 return -EINVAL;
1475         pstream.suspension_int = cpu_to_le32(val32);
1476
1477         token = strsep(&sptr, " ");
1478         if (!token)
1479                 return -EINVAL;
1480         if (kstrtou32(token, 0, &val32))
1481                 return -EINVAL;
1482         pstream.service_start_time = cpu_to_le32(val32);
1483
1484         token = strsep(&sptr, " ");
1485         if (!token)
1486                 return -EINVAL;
1487         if (kstrtou8(token, 0, &pstream.tsid))
1488                 return -EINVAL;
1489
1490         token = strsep(&sptr, " ");
1491         if (!token)
1492                 return -EINVAL;
1493         if (kstrtou16(token, 0, &val16))
1494                 return -EINVAL;
1495         pstream.nominal_msdu = cpu_to_le16(val16);
1496
1497         token = strsep(&sptr, " ");
1498         if (!token)
1499                 return -EINVAL;
1500         if (kstrtou16(token, 0, &val16))
1501                 return -EINVAL;
1502         pstream.max_msdu = cpu_to_le16(val16);
1503
1504         token = strsep(&sptr, " ");
1505         if (!token)
1506                 return -EINVAL;
1507         if (kstrtou32(token, 0, &val32))
1508                 return -EINVAL;
1509         pstream.min_data_rate = cpu_to_le32(val32);
1510
1511         token = strsep(&sptr, " ");
1512         if (!token)
1513                 return -EINVAL;
1514         if (kstrtou32(token, 0, &val32))
1515                 return -EINVAL;
1516         pstream.mean_data_rate = cpu_to_le32(val32);
1517
1518         token = strsep(&sptr, " ");
1519         if (!token)
1520                 return -EINVAL;
1521         if (kstrtou32(token, 0, &val32))
1522                 return -EINVAL;
1523         pstream.peak_data_rate = cpu_to_le32(val32);
1524
1525         token = strsep(&sptr, " ");
1526         if (!token)
1527                 return -EINVAL;
1528         if (kstrtou32(token, 0, &val32))
1529                 return -EINVAL;
1530         pstream.max_burst_size = cpu_to_le32(val32);
1531
1532         token = strsep(&sptr, " ");
1533         if (!token)
1534                 return -EINVAL;
1535         if (kstrtou32(token, 0, &val32))
1536                 return -EINVAL;
1537         pstream.delay_bound = cpu_to_le32(val32);
1538
1539         token = strsep(&sptr, " ");
1540         if (!token)
1541                 return -EINVAL;
1542         if (kstrtou32(token, 0, &val32))
1543                 return -EINVAL;
1544         pstream.min_phy_rate = cpu_to_le32(val32);
1545
1546         token = strsep(&sptr, " ");
1547         if (!token)
1548                 return -EINVAL;
1549         if (kstrtou32(token, 0, &val32))
1550                 return -EINVAL;
1551         pstream.sba = cpu_to_le32(val32);
1552
1553         token = strsep(&sptr, " ");
1554         if (!token)
1555                 return -EINVAL;
1556         if (kstrtou32(token, 0, &val32))
1557                 return -EINVAL;
1558         pstream.medium_time = cpu_to_le32(val32);
1559
1560         pstream.nominal_phy = le32_to_cpu(pstream.min_phy_rate) / 1000000;
1561
1562         ath6kl_wmi_create_pstream_cmd(ar->wmi, vif->fw_vif_idx, &pstream);
1563
1564         return count;
1565 }
1566
1567 static const struct file_operations fops_create_qos = {
1568         .write = ath6kl_create_qos_write,
1569         .open = simple_open,
1570         .owner = THIS_MODULE,
1571         .llseek = default_llseek,
1572 };
1573
1574 static ssize_t ath6kl_delete_qos_write(struct file *file,
1575                                 const char __user *user_buf,
1576                                 size_t count, loff_t *ppos)
1577 {
1578
1579         struct ath6kl *ar = file->private_data;
1580         struct ath6kl_vif *vif;
1581         char buf[100];
1582         ssize_t len;
1583         char *sptr, *token;
1584         u8 traffic_class;
1585         u8 tsid;
1586
1587         vif = ath6kl_vif_first(ar);
1588         if (!vif)
1589                 return -EIO;
1590
1591         len = min(count, sizeof(buf) - 1);
1592         if (copy_from_user(buf, user_buf, len))
1593                 return -EFAULT;
1594         buf[len] = '\0';
1595         sptr = buf;
1596
1597         token = strsep(&sptr, " ");
1598         if (!token)
1599                 return -EINVAL;
1600         if (kstrtou8(token, 0, &traffic_class))
1601                 return -EINVAL;
1602
1603         token = strsep(&sptr, " ");
1604         if (!token)
1605                 return -EINVAL;
1606         if (kstrtou8(token, 0, &tsid))
1607                 return -EINVAL;
1608
1609         ath6kl_wmi_delete_pstream_cmd(ar->wmi, vif->fw_vif_idx,
1610                                       traffic_class, tsid);
1611
1612         return count;
1613 }
1614
1615 static const struct file_operations fops_delete_qos = {
1616         .write = ath6kl_delete_qos_write,
1617         .open = simple_open,
1618         .owner = THIS_MODULE,
1619         .llseek = default_llseek,
1620 };
1621
1622 static ssize_t ath6kl_bgscan_int_write(struct file *file,
1623                                 const char __user *user_buf,
1624                                 size_t count, loff_t *ppos)
1625 {
1626         struct ath6kl *ar = file->private_data;
1627         struct ath6kl_vif *vif;
1628         u16 bgscan_int;
1629         char buf[32];
1630         ssize_t len;
1631
1632         vif = ath6kl_vif_first(ar);
1633         if (!vif)
1634                 return -EIO;
1635
1636         len = min(count, sizeof(buf) - 1);
1637         if (copy_from_user(buf, user_buf, len))
1638                 return -EFAULT;
1639
1640         buf[len] = '\0';
1641         if (kstrtou16(buf, 0, &bgscan_int))
1642                 return -EINVAL;
1643
1644         if (bgscan_int == 0)
1645                 bgscan_int = 0xffff;
1646
1647         vif->bg_scan_period = bgscan_int;
1648
1649         ath6kl_wmi_scanparams_cmd(ar->wmi, 0, 0, 0, bgscan_int, 0, 0, 0, 3,
1650                                   0, 0, 0);
1651
1652         return count;
1653 }
1654
1655 static const struct file_operations fops_bgscan_int = {
1656         .write = ath6kl_bgscan_int_write,
1657         .open = simple_open,
1658         .owner = THIS_MODULE,
1659         .llseek = default_llseek,
1660 };
1661
1662 static ssize_t ath6kl_listen_int_write(struct file *file,
1663                                        const char __user *user_buf,
1664                                        size_t count, loff_t *ppos)
1665 {
1666         struct ath6kl *ar = file->private_data;
1667         struct ath6kl_vif *vif;
1668         u16 listen_interval;
1669         char buf[32];
1670         ssize_t len;
1671
1672         vif = ath6kl_vif_first(ar);
1673         if (!vif)
1674                 return -EIO;
1675
1676         len = min(count, sizeof(buf) - 1);
1677         if (copy_from_user(buf, user_buf, len))
1678                 return -EFAULT;
1679
1680         buf[len] = '\0';
1681         if (kstrtou16(buf, 0, &listen_interval))
1682                 return -EINVAL;
1683
1684         if ((listen_interval < 15) || (listen_interval > 3000))
1685                 return -EINVAL;
1686
1687         vif->listen_intvl_t = listen_interval;
1688         ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
1689                                       vif->listen_intvl_t, 0);
1690
1691         return count;
1692 }
1693
1694 static ssize_t ath6kl_listen_int_read(struct file *file,
1695                                       char __user *user_buf,
1696                                       size_t count, loff_t *ppos)
1697 {
1698         struct ath6kl *ar = file->private_data;
1699         struct ath6kl_vif *vif;
1700         char buf[32];
1701         int len;
1702
1703         vif = ath6kl_vif_first(ar);
1704         if (!vif)
1705                 return -EIO;
1706
1707         len = scnprintf(buf, sizeof(buf), "%u\n", vif->listen_intvl_t);
1708
1709         return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1710 }
1711
1712 static const struct file_operations fops_listen_int = {
1713         .read = ath6kl_listen_int_read,
1714         .write = ath6kl_listen_int_write,
1715         .open = simple_open,
1716         .owner = THIS_MODULE,
1717         .llseek = default_llseek,
1718 };
1719
1720 static ssize_t ath6kl_power_params_write(struct file *file,
1721                                                 const char __user *user_buf,
1722                                                 size_t count, loff_t *ppos)
1723 {
1724         struct ath6kl *ar = file->private_data;
1725         u8 buf[100];
1726         unsigned int len = 0;
1727         char *sptr, *token;
1728         u16 idle_period, ps_poll_num, dtim,
1729                 tx_wakeup, num_tx;
1730
1731         len = min(count, sizeof(buf) - 1);
1732         if (copy_from_user(buf, user_buf, len))
1733                 return -EFAULT;
1734         buf[len] = '\0';
1735         sptr = buf;
1736
1737         token = strsep(&sptr, " ");
1738         if (!token)
1739                 return -EINVAL;
1740         if (kstrtou16(token, 0, &idle_period))
1741                 return -EINVAL;
1742
1743         token = strsep(&sptr, " ");
1744         if (!token)
1745                 return -EINVAL;
1746         if (kstrtou16(token, 0, &ps_poll_num))
1747                 return -EINVAL;
1748
1749         token = strsep(&sptr, " ");
1750         if (!token)
1751                 return -EINVAL;
1752         if (kstrtou16(token, 0, &dtim))
1753                 return -EINVAL;
1754
1755         token = strsep(&sptr, " ");
1756         if (!token)
1757                 return -EINVAL;
1758         if (kstrtou16(token, 0, &tx_wakeup))
1759                 return -EINVAL;
1760
1761         token = strsep(&sptr, " ");
1762         if (!token)
1763                 return -EINVAL;
1764         if (kstrtou16(token, 0, &num_tx))
1765                 return -EINVAL;
1766
1767         ath6kl_wmi_pmparams_cmd(ar->wmi, 0, idle_period, ps_poll_num,
1768                                 dtim, tx_wakeup, num_tx, 0);
1769
1770         return count;
1771 }
1772
1773 static const struct file_operations fops_power_params = {
1774         .write = ath6kl_power_params_write,
1775         .open = simple_open,
1776         .owner = THIS_MODULE,
1777         .llseek = default_llseek,
1778 };
1779
1780 void ath6kl_debug_init(struct ath6kl *ar)
1781 {
1782         skb_queue_head_init(&ar->debug.fwlog_queue);
1783         init_completion(&ar->debug.fwlog_completion);
1784
1785         /*
1786          * Actually we are lying here but don't know how to read the mask
1787          * value from the firmware.
1788          */
1789         ar->debug.fwlog_mask = 0;
1790 }
1791
1792 /*
1793  * Initialisation needs to happen in two stages as fwlog events can come
1794  * before cfg80211 is initialised, and debugfs depends on cfg80211
1795  * initialisation.
1796  */
1797 int ath6kl_debug_init_fs(struct ath6kl *ar)
1798 {
1799         ar->debugfs_phy = debugfs_create_dir("ath6kl",
1800                                              ar->wiphy->debugfsdir);
1801         if (!ar->debugfs_phy)
1802                 return -ENOMEM;
1803
1804         debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar,
1805                             &fops_tgt_stats);
1806
1807         if (ar->hif_type == ATH6KL_HIF_TYPE_SDIO)
1808                 debugfs_create_file("credit_dist_stats", S_IRUSR,
1809                                     ar->debugfs_phy, ar,
1810                                     &fops_credit_dist_stats);
1811
1812         debugfs_create_file("endpoint_stats", S_IRUSR | S_IWUSR,
1813                             ar->debugfs_phy, ar, &fops_endpoint_stats);
1814
1815         debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar,
1816                             &fops_fwlog);
1817
1818         debugfs_create_file("fwlog_block", S_IRUSR, ar->debugfs_phy, ar,
1819                             &fops_fwlog_block);
1820
1821         debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy,
1822                             ar, &fops_fwlog_mask);
1823
1824         debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1825                             &fops_diag_reg_read);
1826
1827         debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar,
1828                             &fops_reg_dump);
1829
1830         debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR,
1831                             ar->debugfs_phy, ar, &fops_lrssi_roam_threshold);
1832
1833         debugfs_create_file("reg_write", S_IRUSR | S_IWUSR,
1834                             ar->debugfs_phy, ar, &fops_diag_reg_write);
1835
1836         debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar,
1837                             &fops_war_stats);
1838
1839         debugfs_create_file("roam_table", S_IRUSR, ar->debugfs_phy, ar,
1840                             &fops_roam_table);
1841
1842         debugfs_create_file("force_roam", S_IWUSR, ar->debugfs_phy, ar,
1843                             &fops_force_roam);
1844
1845         debugfs_create_file("roam_mode", S_IWUSR, ar->debugfs_phy, ar,
1846                             &fops_roam_mode);
1847
1848         debugfs_create_file("keepalive", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1849                             &fops_keepalive);
1850
1851         debugfs_create_file("disconnect_timeout", S_IRUSR | S_IWUSR,
1852                             ar->debugfs_phy, ar, &fops_disconnect_timeout);
1853
1854         debugfs_create_file("create_qos", S_IWUSR, ar->debugfs_phy, ar,
1855                             &fops_create_qos);
1856
1857         debugfs_create_file("delete_qos", S_IWUSR, ar->debugfs_phy, ar,
1858                             &fops_delete_qos);
1859
1860         debugfs_create_file("bgscan_interval", S_IWUSR,
1861                             ar->debugfs_phy, ar, &fops_bgscan_int);
1862
1863         debugfs_create_file("listen_interval", S_IRUSR | S_IWUSR,
1864                             ar->debugfs_phy, ar, &fops_listen_int);
1865
1866         debugfs_create_file("power_params", S_IWUSR, ar->debugfs_phy, ar,
1867                             &fops_power_params);
1868
1869         return 0;
1870 }
1871
1872 void ath6kl_debug_cleanup(struct ath6kl *ar)
1873 {
1874         skb_queue_purge(&ar->debug.fwlog_queue);
1875         complete(&ar->debug.fwlog_completion);
1876         kfree(ar->debug.roam_tbl);
1877 }
1878
1879 #endif