linux/drivers/net/wireless/ath/ath6kl/debug.c
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   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
  28struct 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
  40void ath6kl_printk(const char *level, const char *fmt, ...)
  41{
  42        struct va_format vaf;
  43        va_list args;
  44
  45        va_start(args, fmt);
  46
  47        vaf.fmt = fmt;
  48        vaf.va = &args;
  49
  50        printk("%sath6kl: %pV", level, &vaf);
  51
  52        va_end(args);
  53}
  54EXPORT_SYMBOL(ath6kl_printk);
  55
  56void ath6kl_info(const char *fmt, ...)
  57{
  58        struct va_format vaf = {
  59                .fmt = fmt,
  60        };
  61        va_list args;
  62
  63        va_start(args, fmt);
  64        vaf.va = &args;
  65        ath6kl_printk(KERN_INFO, "%pV", &vaf);
  66        trace_ath6kl_log_info(&vaf);
  67        va_end(args);
  68}
  69EXPORT_SYMBOL(ath6kl_info);
  70
  71void ath6kl_err(const char *fmt, ...)
  72{
  73        struct va_format vaf = {
  74                .fmt = fmt,
  75        };
  76        va_list args;
  77
  78        va_start(args, fmt);
  79        vaf.va = &args;
  80        ath6kl_printk(KERN_ERR, "%pV", &vaf);
  81        trace_ath6kl_log_err(&vaf);
  82        va_end(args);
  83}
  84EXPORT_SYMBOL(ath6kl_err);
  85
  86void ath6kl_warn(const char *fmt, ...)
  87{
  88        struct va_format vaf = {
  89                .fmt = fmt,
  90        };
  91        va_list args;
  92
  93        va_start(args, fmt);
  94        vaf.va = &args;
  95        ath6kl_printk(KERN_WARNING, "%pV", &vaf);
  96        trace_ath6kl_log_warn(&vaf);
  97        va_end(args);
  98}
  99EXPORT_SYMBOL(ath6kl_warn);
 100
 101int ath6kl_read_tgt_stats(struct ath6kl *ar, struct ath6kl_vif *vif)
 102{
 103        long left;
 104
 105        if (down_interruptible(&ar->sem))
 106                return -EBUSY;
 107
 108        set_bit(STATS_UPDATE_PEND, &vif->flags);
 109
 110        if (ath6kl_wmi_get_stats_cmd(ar->wmi, 0)) {
 111                up(&ar->sem);
 112                return -EIO;
 113        }
 114
 115        left = wait_event_interruptible_timeout(ar->event_wq,
 116                                                !test_bit(STATS_UPDATE_PEND,
 117                                                &vif->flags), WMI_TIMEOUT);
 118
 119        up(&ar->sem);
 120
 121        if (left <= 0)
 122                return -ETIMEDOUT;
 123
 124        return 0;
 125}
 126EXPORT_SYMBOL(ath6kl_read_tgt_stats);
 127
 128#ifdef CONFIG_ATH6KL_DEBUG
 129
 130void ath6kl_dbg(enum ATH6K_DEBUG_MASK mask, const char *fmt, ...)
 131{
 132        struct va_format vaf;
 133        va_list args;
 134
 135        va_start(args, fmt);
 136
 137        vaf.fmt = fmt;
 138        vaf.va = &args;
 139
 140        if (debug_mask & mask)
 141                ath6kl_printk(KERN_DEBUG, "%pV", &vaf);
 142
 143        trace_ath6kl_log_dbg(mask, &vaf);
 144
 145        va_end(args);
 146}
 147EXPORT_SYMBOL(ath6kl_dbg);
 148
 149void ath6kl_dbg_dump(enum ATH6K_DEBUG_MASK mask,
 150                     const char *msg, const char *prefix,
 151                     const void *buf, size_t len)
 152{
 153        if (debug_mask & mask) {
 154                if (msg)
 155                        ath6kl_dbg(mask, "%s\n", msg);
 156
 157                print_hex_dump_bytes(prefix, DUMP_PREFIX_OFFSET, buf, len);
 158        }
 159
 160        /* tracing code doesn't like null strings :/ */
 161        trace_ath6kl_log_dbg_dump(msg ? msg : "", prefix ? prefix : "",
 162                                  buf, len);
 163}
 164EXPORT_SYMBOL(ath6kl_dbg_dump);
 165
 166#define REG_OUTPUT_LEN_PER_LINE 25
 167#define REGTYPE_STR_LEN         100
 168
 169struct ath6kl_diag_reg_info {
 170        u32 reg_start;
 171        u32 reg_end;
 172        const char *reg_info;
 173};
 174
 175static const struct ath6kl_diag_reg_info diag_reg[] = {
 176        { 0x20000, 0x200fc, "General DMA and Rx registers" },
 177        { 0x28000, 0x28900, "MAC PCU register & keycache" },
 178        { 0x20800, 0x20a40, "QCU" },
 179        { 0x21000, 0x212f0, "DCU" },
 180        { 0x4000,  0x42e4, "RTC" },
 181        { 0x540000, 0x540000 + (256 * 1024), "RAM" },
 182        { 0x29800, 0x2B210, "Base Band" },
 183        { 0x1C000, 0x1C748, "Analog" },
 184};
 185
 186void ath6kl_dump_registers(struct ath6kl_device *dev,
 187                           struct ath6kl_irq_proc_registers *irq_proc_reg,
 188                           struct ath6kl_irq_enable_reg *irq_enable_reg)
 189{
 190        ath6kl_dbg(ATH6KL_DBG_IRQ, ("<------- Register Table -------->\n"));
 191
 192        if (irq_proc_reg != NULL) {
 193                ath6kl_dbg(ATH6KL_DBG_IRQ,
 194                           "Host Int status:           0x%x\n",
 195                           irq_proc_reg->host_int_status);
 196                ath6kl_dbg(ATH6KL_DBG_IRQ,
 197                           "CPU Int status:            0x%x\n",
 198                           irq_proc_reg->cpu_int_status);
 199                ath6kl_dbg(ATH6KL_DBG_IRQ,
 200                           "Error Int status:          0x%x\n",
 201                           irq_proc_reg->error_int_status);
 202                ath6kl_dbg(ATH6KL_DBG_IRQ,
 203                           "Counter Int status:        0x%x\n",
 204                           irq_proc_reg->counter_int_status);
 205                ath6kl_dbg(ATH6KL_DBG_IRQ,
 206                           "Mbox Frame:                0x%x\n",
 207                           irq_proc_reg->mbox_frame);
 208                ath6kl_dbg(ATH6KL_DBG_IRQ,
 209                           "Rx Lookahead Valid:        0x%x\n",
 210                           irq_proc_reg->rx_lkahd_valid);
 211                ath6kl_dbg(ATH6KL_DBG_IRQ,
 212                           "Rx Lookahead 0:            0x%x\n",
 213                           irq_proc_reg->rx_lkahd[0]);
 214                ath6kl_dbg(ATH6KL_DBG_IRQ,
 215                           "Rx Lookahead 1:            0x%x\n",
 216                           irq_proc_reg->rx_lkahd[1]);
 217
 218                if (dev->ar->mbox_info.gmbox_addr != 0) {
 219                        /*
 220                         * If the target supports GMBOX hardware, dump some
 221                         * additional state.
 222                         */
 223                        ath6kl_dbg(ATH6KL_DBG_IRQ,
 224                                   "GMBOX Host Int status 2:   0x%x\n",
 225                                   irq_proc_reg->host_int_status2);
 226                        ath6kl_dbg(ATH6KL_DBG_IRQ,
 227                                   "GMBOX RX Avail:            0x%x\n",
 228                                   irq_proc_reg->gmbox_rx_avail);
 229                        ath6kl_dbg(ATH6KL_DBG_IRQ,
 230                                   "GMBOX lookahead alias 0:   0x%x\n",
 231                                   irq_proc_reg->rx_gmbox_lkahd_alias[0]);
 232                        ath6kl_dbg(ATH6KL_DBG_IRQ,
 233                                   "GMBOX lookahead alias 1:   0x%x\n",
 234                                   irq_proc_reg->rx_gmbox_lkahd_alias[1]);
 235                }
 236        }
 237
 238        if (irq_enable_reg != NULL) {
 239                ath6kl_dbg(ATH6KL_DBG_IRQ,
 240                           "Int status Enable:         0x%x\n",
 241                           irq_enable_reg->int_status_en);
 242                ath6kl_dbg(ATH6KL_DBG_IRQ, "Counter Int status Enable: 0x%x\n",
 243                           irq_enable_reg->cntr_int_status_en);
 244        }
 245        ath6kl_dbg(ATH6KL_DBG_IRQ, "<------------------------------->\n");
 246}
 247
 248static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist)
 249{
 250        ath6kl_dbg(ATH6KL_DBG_CREDIT,
 251                   "--- endpoint: %d  svc_id: 0x%X ---\n",
 252                   ep_dist->endpoint, ep_dist->svc_id);
 253        ath6kl_dbg(ATH6KL_DBG_CREDIT, " dist_flags     : 0x%X\n",
 254                   ep_dist->dist_flags);
 255        ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_norm      : %d\n",
 256                   ep_dist->cred_norm);
 257        ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_min       : %d\n",
 258                   ep_dist->cred_min);
 259        ath6kl_dbg(ATH6KL_DBG_CREDIT, " credits        : %d\n",
 260                   ep_dist->credits);
 261        ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_assngd    : %d\n",
 262                   ep_dist->cred_assngd);
 263        ath6kl_dbg(ATH6KL_DBG_CREDIT, " seek_cred      : %d\n",
 264                   ep_dist->seek_cred);
 265        ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_sz        : %d\n",
 266                   ep_dist->cred_sz);
 267        ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_per_msg   : %d\n",
 268                   ep_dist->cred_per_msg);
 269        ath6kl_dbg(ATH6KL_DBG_CREDIT, " cred_to_dist   : %d\n",
 270                   ep_dist->cred_to_dist);
 271        ath6kl_dbg(ATH6KL_DBG_CREDIT, " txq_depth      : %d\n",
 272                   get_queue_depth(&ep_dist->htc_ep->txq));
 273        ath6kl_dbg(ATH6KL_DBG_CREDIT,
 274                   "----------------------------------\n");
 275}
 276
 277/* FIXME: move to htc.c */
 278void dump_cred_dist_stats(struct htc_target *target)
 279{
 280        struct htc_endpoint_credit_dist *ep_list;
 281
 282        list_for_each_entry(ep_list, &target->cred_dist_list, list)
 283                dump_cred_dist(ep_list);
 284
 285        ath6kl_dbg(ATH6KL_DBG_CREDIT,
 286                   "credit distribution total %d free %d\n",
 287                   target->credit_info->total_avail_credits,
 288                   target->credit_info->cur_free_credits);
 289}
 290
 291void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war)
 292{
 293        switch (war) {
 294        case ATH6KL_WAR_INVALID_RATE:
 295                ar->debug.war_stats.invalid_rate++;
 296                break;
 297        }
 298}
 299
 300static ssize_t read_file_war_stats(struct file *file, char __user *user_buf,
 301                                   size_t count, loff_t *ppos)
 302{
 303        struct ath6kl *ar = file->private_data;
 304        char *buf;
 305        unsigned int len = 0, buf_len = 1500;
 306        ssize_t ret_cnt;
 307
 308        buf = kzalloc(buf_len, GFP_KERNEL);
 309        if (!buf)
 310                return -ENOMEM;
 311
 312        len += scnprintf(buf + len, buf_len - len, "\n");
 313        len += scnprintf(buf + len, buf_len - len, "%25s\n",
 314                         "Workaround stats");
 315        len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 316                         "=================");
 317        len += scnprintf(buf + len, buf_len - len, "%20s %10u\n",
 318                         "Invalid rates", ar->debug.war_stats.invalid_rate);
 319
 320        if (WARN_ON(len > buf_len))
 321                len = buf_len;
 322
 323        ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 324
 325        kfree(buf);
 326        return ret_cnt;
 327}
 328
 329static const struct file_operations fops_war_stats = {
 330        .read = read_file_war_stats,
 331        .open = simple_open,
 332        .owner = THIS_MODULE,
 333        .llseek = default_llseek,
 334};
 335
 336void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len)
 337{
 338        struct ath6kl_fwlog_slot *slot;
 339        struct sk_buff *skb;
 340        size_t slot_len;
 341
 342        if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE))
 343                return;
 344
 345        slot_len = sizeof(*slot) + ATH6KL_FWLOG_PAYLOAD_SIZE;
 346
 347        skb = alloc_skb(slot_len, GFP_KERNEL);
 348        if (!skb)
 349                return;
 350
 351        slot = skb_put(skb, slot_len);
 352        slot->timestamp = cpu_to_le32(jiffies);
 353        slot->length = cpu_to_le32(len);
 354        memcpy(slot->payload, buf, len);
 355
 356        /* Need to pad each record to fixed length ATH6KL_FWLOG_PAYLOAD_SIZE */
 357        memset(slot->payload + len, 0, ATH6KL_FWLOG_PAYLOAD_SIZE - len);
 358
 359        spin_lock(&ar->debug.fwlog_queue.lock);
 360
 361        __skb_queue_tail(&ar->debug.fwlog_queue, skb);
 362        complete(&ar->debug.fwlog_completion);
 363
 364        /* drop oldest entries */
 365        while (skb_queue_len(&ar->debug.fwlog_queue) >
 366               ATH6KL_FWLOG_MAX_ENTRIES) {
 367                skb = __skb_dequeue(&ar->debug.fwlog_queue);
 368                kfree_skb(skb);
 369        }
 370
 371        spin_unlock(&ar->debug.fwlog_queue.lock);
 372
 373        return;
 374}
 375
 376static int ath6kl_fwlog_open(struct inode *inode, struct file *file)
 377{
 378        struct ath6kl *ar = inode->i_private;
 379
 380        if (ar->debug.fwlog_open)
 381                return -EBUSY;
 382
 383        ar->debug.fwlog_open = true;
 384
 385        file->private_data = inode->i_private;
 386        return 0;
 387}
 388
 389static int ath6kl_fwlog_release(struct inode *inode, struct file *file)
 390{
 391        struct ath6kl *ar = inode->i_private;
 392
 393        ar->debug.fwlog_open = false;
 394
 395        return 0;
 396}
 397
 398static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf,
 399                                 size_t count, loff_t *ppos)
 400{
 401        struct ath6kl *ar = file->private_data;
 402        struct sk_buff *skb;
 403        ssize_t ret_cnt;
 404        size_t len = 0;
 405        char *buf;
 406
 407        buf = vmalloc(count);
 408        if (!buf)
 409                return -ENOMEM;
 410
 411        /* read undelivered logs from firmware */
 412        ath6kl_read_fwlogs(ar);
 413
 414        spin_lock(&ar->debug.fwlog_queue.lock);
 415
 416        while ((skb = __skb_dequeue(&ar->debug.fwlog_queue))) {
 417                if (skb->len > count - len) {
 418                        /* not enough space, put skb back and leave */
 419                        __skb_queue_head(&ar->debug.fwlog_queue, skb);
 420                        break;
 421                }
 422
 423
 424                memcpy(buf + len, skb->data, skb->len);
 425                len += skb->len;
 426
 427                kfree_skb(skb);
 428        }
 429
 430        spin_unlock(&ar->debug.fwlog_queue.lock);
 431
 432        /* FIXME: what to do if len == 0? */
 433
 434        ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 435
 436        vfree(buf);
 437
 438        return ret_cnt;
 439}
 440
 441static const struct file_operations fops_fwlog = {
 442        .open = ath6kl_fwlog_open,
 443        .release = ath6kl_fwlog_release,
 444        .read = ath6kl_fwlog_read,
 445        .owner = THIS_MODULE,
 446        .llseek = default_llseek,
 447};
 448
 449static ssize_t ath6kl_fwlog_block_read(struct file *file,
 450                                       char __user *user_buf,
 451                                       size_t count,
 452                                       loff_t *ppos)
 453{
 454        struct ath6kl *ar = file->private_data;
 455        struct sk_buff *skb;
 456        ssize_t ret_cnt;
 457        size_t len = 0, not_copied;
 458        char *buf;
 459        int ret;
 460
 461        buf = vmalloc(count);
 462        if (!buf)
 463                return -ENOMEM;
 464
 465        spin_lock(&ar->debug.fwlog_queue.lock);
 466
 467        if (skb_queue_len(&ar->debug.fwlog_queue) == 0) {
 468                /* we must init under queue lock */
 469                init_completion(&ar->debug.fwlog_completion);
 470
 471                spin_unlock(&ar->debug.fwlog_queue.lock);
 472
 473                ret = wait_for_completion_interruptible(
 474                        &ar->debug.fwlog_completion);
 475                if (ret == -ERESTARTSYS) {
 476                        vfree(buf);
 477                        return ret;
 478                }
 479
 480                spin_lock(&ar->debug.fwlog_queue.lock);
 481        }
 482
 483        while ((skb = __skb_dequeue(&ar->debug.fwlog_queue))) {
 484                if (skb->len > count - len) {
 485                        /* not enough space, put skb back and leave */
 486                        __skb_queue_head(&ar->debug.fwlog_queue, skb);
 487                        break;
 488                }
 489
 490
 491                memcpy(buf + len, skb->data, skb->len);
 492                len += skb->len;
 493
 494                kfree_skb(skb);
 495        }
 496
 497        spin_unlock(&ar->debug.fwlog_queue.lock);
 498
 499        /* FIXME: what to do if len == 0? */
 500
 501        not_copied = copy_to_user(user_buf, buf, len);
 502        if (not_copied != 0) {
 503                ret_cnt = -EFAULT;
 504                goto out;
 505        }
 506
 507        *ppos = *ppos + len;
 508
 509        ret_cnt = len;
 510
 511out:
 512        vfree(buf);
 513
 514        return ret_cnt;
 515}
 516
 517static const struct file_operations fops_fwlog_block = {
 518        .open = ath6kl_fwlog_open,
 519        .release = ath6kl_fwlog_release,
 520        .read = ath6kl_fwlog_block_read,
 521        .owner = THIS_MODULE,
 522        .llseek = default_llseek,
 523};
 524
 525static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf,
 526                                      size_t count, loff_t *ppos)
 527{
 528        struct ath6kl *ar = file->private_data;
 529        char buf[16];
 530        int len;
 531
 532        len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask);
 533
 534        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 535}
 536
 537static ssize_t ath6kl_fwlog_mask_write(struct file *file,
 538                                       const char __user *user_buf,
 539                                       size_t count, loff_t *ppos)
 540{
 541        struct ath6kl *ar = file->private_data;
 542        int ret;
 543
 544        ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask);
 545        if (ret)
 546                return ret;
 547
 548        ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi,
 549                                                 ATH6KL_FWLOG_VALID_MASK,
 550                                                 ar->debug.fwlog_mask);
 551        if (ret)
 552                return ret;
 553
 554        return count;
 555}
 556
 557static const struct file_operations fops_fwlog_mask = {
 558        .open = simple_open,
 559        .read = ath6kl_fwlog_mask_read,
 560        .write = ath6kl_fwlog_mask_write,
 561        .owner = THIS_MODULE,
 562        .llseek = default_llseek,
 563};
 564
 565static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
 566                                   size_t count, loff_t *ppos)
 567{
 568        struct ath6kl *ar = file->private_data;
 569        struct ath6kl_vif *vif;
 570        struct target_stats *tgt_stats;
 571        char *buf;
 572        unsigned int len = 0, buf_len = 1500;
 573        int i;
 574        ssize_t ret_cnt;
 575        int rv;
 576
 577        vif = ath6kl_vif_first(ar);
 578        if (!vif)
 579                return -EIO;
 580
 581        buf = kzalloc(buf_len, GFP_KERNEL);
 582        if (!buf)
 583                return -ENOMEM;
 584
 585        rv = ath6kl_read_tgt_stats(ar, vif);
 586        if (rv < 0) {
 587                kfree(buf);
 588                return rv;
 589        }
 590
 591        tgt_stats = &vif->target_stats;
 592
 593        len += scnprintf(buf + len, buf_len - len, "\n");
 594        len += scnprintf(buf + len, buf_len - len, "%25s\n",
 595                         "Target Tx stats");
 596        len += scnprintf(buf + len, buf_len - len, "%25s\n\n",
 597                         "=================");
 598        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 599                         "Ucast packets", tgt_stats->tx_ucast_pkt);
 600        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 601                         "Bcast packets", tgt_stats->tx_bcast_pkt);
 602        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 603                         "Ucast byte", tgt_stats->tx_ucast_byte);
 604        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 605                         "Bcast byte", tgt_stats->tx_bcast_byte);
 606        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 607                         "Rts success cnt", tgt_stats->tx_rts_success_cnt);
 608        for (i = 0; i < 4; i++)
 609                len += scnprintf(buf + len, buf_len - len,
 610                                 "%18s %d %10llu\n", "PER on ac",
 611                                 i, tgt_stats->tx_pkt_per_ac[i]);
 612        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 613                         "Error", tgt_stats->tx_err);
 614        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 615                         "Fail count", tgt_stats->tx_fail_cnt);
 616        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 617                         "Retry count", tgt_stats->tx_retry_cnt);
 618        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 619                         "Multi retry cnt", tgt_stats->tx_mult_retry_cnt);
 620        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 621                         "Rts fail cnt", tgt_stats->tx_rts_fail_cnt);
 622        len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n",
 623                         "TKIP counter measure used",
 624                         tgt_stats->tkip_cnter_measures_invoked);
 625
 626        len += scnprintf(buf + len, buf_len - len, "%25s\n",
 627                         "Target Rx stats");
 628        len += scnprintf(buf + len, buf_len - len, "%25s\n",
 629                         "=================");
 630
 631        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 632                         "Ucast packets", tgt_stats->rx_ucast_pkt);
 633        len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 634                         "Ucast Rate", tgt_stats->rx_ucast_rate);
 635        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 636                         "Bcast packets", tgt_stats->rx_bcast_pkt);
 637        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 638                         "Ucast byte", tgt_stats->rx_ucast_byte);
 639        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 640                         "Bcast byte", tgt_stats->rx_bcast_byte);
 641        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 642                         "Fragmented pkt", tgt_stats->rx_frgment_pkt);
 643        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 644                         "Error", tgt_stats->rx_err);
 645        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 646                         "CRC Err", tgt_stats->rx_crc_err);
 647        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 648                         "Key chache miss", tgt_stats->rx_key_cache_miss);
 649        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 650                         "Decrypt Err", tgt_stats->rx_decrypt_err);
 651        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 652                         "Duplicate frame", tgt_stats->rx_dupl_frame);
 653        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 654                         "Tkip Mic failure", tgt_stats->tkip_local_mic_fail);
 655        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 656                         "TKIP format err", tgt_stats->tkip_fmt_err);
 657        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 658                         "CCMP format Err", tgt_stats->ccmp_fmt_err);
 659        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n",
 660                         "CCMP Replay Err", tgt_stats->ccmp_replays);
 661
 662        len += scnprintf(buf + len, buf_len - len, "%25s\n",
 663                         "Misc Target stats");
 664        len += scnprintf(buf + len, buf_len - len, "%25s\n",
 665                         "=================");
 666        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 667                         "Beacon Miss count", tgt_stats->cs_bmiss_cnt);
 668        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 669                         "Num Connects", tgt_stats->cs_connect_cnt);
 670        len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n",
 671                         "Num disconnects", tgt_stats->cs_discon_cnt);
 672        len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 673                         "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi);
 674        len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 675                         "ARP pkt received", tgt_stats->arp_received);
 676        len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 677                         "ARP pkt matched", tgt_stats->arp_matched);
 678        len += scnprintf(buf + len, buf_len - len, "%20s %10d\n",
 679                         "ARP pkt replied", tgt_stats->arp_replied);
 680
 681        if (len > buf_len)
 682                len = buf_len;
 683
 684        ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 685
 686        kfree(buf);
 687        return ret_cnt;
 688}
 689
 690static const struct file_operations fops_tgt_stats = {
 691        .read = read_file_tgt_stats,
 692        .open = simple_open,
 693        .owner = THIS_MODULE,
 694        .llseek = default_llseek,
 695};
 696
 697#define print_credit_info(fmt_str, ep_list_field)               \
 698        (len += scnprintf(buf + len, buf_len - len, fmt_str,    \
 699                         ep_list->ep_list_field))
 700#define CREDIT_INFO_DISPLAY_STRING_LEN  200
 701#define CREDIT_INFO_LEN 128
 702
 703static ssize_t read_file_credit_dist_stats(struct file *file,
 704                                           char __user *user_buf,
 705                                           size_t count, loff_t *ppos)
 706{
 707        struct ath6kl *ar = file->private_data;
 708        struct htc_target *target = ar->htc_target;
 709        struct htc_endpoint_credit_dist *ep_list;
 710        char *buf;
 711        unsigned int buf_len, len = 0;
 712        ssize_t ret_cnt;
 713
 714        buf_len = CREDIT_INFO_DISPLAY_STRING_LEN +
 715                  get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN;
 716        buf = kzalloc(buf_len, GFP_KERNEL);
 717        if (!buf)
 718                return -ENOMEM;
 719
 720        len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 721                         "Total Avail Credits: ",
 722                         target->credit_info->total_avail_credits);
 723        len += scnprintf(buf + len, buf_len - len, "%25s%5d\n",
 724                         "Free credits :",
 725                         target->credit_info->cur_free_credits);
 726
 727        len += scnprintf(buf + len, buf_len - len,
 728                         " Epid  Flags    Cred_norm  Cred_min  Credits  Cred_assngd"
 729                         "  Seek_cred  Cred_sz  Cred_per_msg  Cred_to_dist"
 730                         "  qdepth\n");
 731
 732        list_for_each_entry(ep_list, &target->cred_dist_list, list) {
 733                print_credit_info("  %2d", endpoint);
 734                print_credit_info("%10x", dist_flags);
 735                print_credit_info("%8d", cred_norm);
 736                print_credit_info("%9d", cred_min);
 737                print_credit_info("%9d", credits);
 738                print_credit_info("%10d", cred_assngd);
 739                print_credit_info("%13d", seek_cred);
 740                print_credit_info("%12d", cred_sz);
 741                print_credit_info("%9d", cred_per_msg);
 742                print_credit_info("%14d", cred_to_dist);
 743                len += scnprintf(buf + len, buf_len - len, "%12d\n",
 744                                 get_queue_depth(&ep_list->htc_ep->txq));
 745        }
 746
 747        if (len > buf_len)
 748                len = buf_len;
 749
 750        ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 751        kfree(buf);
 752        return ret_cnt;
 753}
 754
 755static const struct file_operations fops_credit_dist_stats = {
 756        .read = read_file_credit_dist_stats,
 757        .open = simple_open,
 758        .owner = THIS_MODULE,
 759        .llseek = default_llseek,
 760};
 761
 762static unsigned int print_endpoint_stat(struct htc_target *target, char *buf,
 763                                        unsigned int buf_len, unsigned int len,
 764                                        int offset, const char *name)
 765{
 766        int i;
 767        struct htc_endpoint_stats *ep_st;
 768        u32 *counter;
 769
 770        len += scnprintf(buf + len, buf_len - len, "%s:", name);
 771        for (i = 0; i < ENDPOINT_MAX; i++) {
 772                ep_st = &target->endpoint[i].ep_st;
 773                counter = ((u32 *) ep_st) + (offset / 4);
 774                len += scnprintf(buf + len, buf_len - len, " %u", *counter);
 775        }
 776        len += scnprintf(buf + len, buf_len - len, "\n");
 777
 778        return len;
 779}
 780
 781static ssize_t ath6kl_endpoint_stats_read(struct file *file,
 782                                          char __user *user_buf,
 783                                          size_t count, loff_t *ppos)
 784{
 785        struct ath6kl *ar = file->private_data;
 786        struct htc_target *target = ar->htc_target;
 787        char *buf;
 788        unsigned int buf_len, len = 0;
 789        ssize_t ret_cnt;
 790
 791        buf_len = sizeof(struct htc_endpoint_stats) / sizeof(u32) *
 792                (25 + ENDPOINT_MAX * 11);
 793        buf = kmalloc(buf_len, GFP_KERNEL);
 794        if (!buf)
 795                return -ENOMEM;
 796
 797#define EPSTAT(name)                                                    \
 798        do {                                                            \
 799                len = print_endpoint_stat(target, buf, buf_len, len,    \
 800                                          offsetof(struct htc_endpoint_stats, \
 801                                                   name),               \
 802                                          #name);                       \
 803        } while (0)
 804
 805        EPSTAT(cred_low_indicate);
 806        EPSTAT(tx_issued);
 807        EPSTAT(tx_pkt_bundled);
 808        EPSTAT(tx_bundles);
 809        EPSTAT(tx_dropped);
 810        EPSTAT(tx_cred_rpt);
 811        EPSTAT(cred_rpt_from_rx);
 812        EPSTAT(cred_rpt_from_other);
 813        EPSTAT(cred_rpt_ep0);
 814        EPSTAT(cred_from_rx);
 815        EPSTAT(cred_from_other);
 816        EPSTAT(cred_from_ep0);
 817        EPSTAT(cred_cosumd);
 818        EPSTAT(cred_retnd);
 819        EPSTAT(rx_pkts);
 820        EPSTAT(rx_lkahds);
 821        EPSTAT(rx_bundl);
 822        EPSTAT(rx_bundle_lkahd);
 823        EPSTAT(rx_bundle_from_hdr);
 824        EPSTAT(rx_alloc_thresh_hit);
 825        EPSTAT(rxalloc_thresh_byte);
 826#undef EPSTAT
 827
 828        if (len > buf_len)
 829                len = buf_len;
 830
 831        ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 832        kfree(buf);
 833        return ret_cnt;
 834}
 835
 836static ssize_t ath6kl_endpoint_stats_write(struct file *file,
 837                                           const char __user *user_buf,
 838                                           size_t count, loff_t *ppos)
 839{
 840        struct ath6kl *ar = file->private_data;
 841        struct htc_target *target = ar->htc_target;
 842        int ret, i;
 843        u32 val;
 844        struct htc_endpoint_stats *ep_st;
 845
 846        ret = kstrtou32_from_user(user_buf, count, 0, &val);
 847        if (ret)
 848                return ret;
 849        if (val == 0) {
 850                for (i = 0; i < ENDPOINT_MAX; i++) {
 851                        ep_st = &target->endpoint[i].ep_st;
 852                        memset(ep_st, 0, sizeof(*ep_st));
 853                }
 854        }
 855
 856        return count;
 857}
 858
 859static const struct file_operations fops_endpoint_stats = {
 860        .open = simple_open,
 861        .read = ath6kl_endpoint_stats_read,
 862        .write = ath6kl_endpoint_stats_write,
 863        .owner = THIS_MODULE,
 864        .llseek = default_llseek,
 865};
 866
 867static unsigned long ath6kl_get_num_reg(void)
 868{
 869        int i;
 870        unsigned long n_reg = 0;
 871
 872        for (i = 0; i < ARRAY_SIZE(diag_reg); i++)
 873                n_reg = n_reg +
 874                     (diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1;
 875
 876        return n_reg;
 877}
 878
 879static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr)
 880{
 881        int i;
 882
 883        for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 884                if (reg_addr >= diag_reg[i].reg_start &&
 885                    reg_addr <= diag_reg[i].reg_end)
 886                        return true;
 887        }
 888
 889        return false;
 890}
 891
 892static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf,
 893                                    size_t count, loff_t *ppos)
 894{
 895        struct ath6kl *ar = file->private_data;
 896        u8 buf[50];
 897        unsigned int len = 0;
 898
 899        if (ar->debug.dbgfs_diag_reg)
 900                len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n",
 901                                ar->debug.dbgfs_diag_reg);
 902        else
 903                len += scnprintf(buf + len, sizeof(buf) - len,
 904                                 "All diag registers\n");
 905
 906        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
 907}
 908
 909static ssize_t ath6kl_regread_write(struct file *file,
 910                                    const char __user *user_buf,
 911                                    size_t count, loff_t *ppos)
 912{
 913        struct ath6kl *ar = file->private_data;
 914        unsigned long reg_addr;
 915
 916        if (kstrtoul_from_user(user_buf, count, 0, &reg_addr))
 917                return -EINVAL;
 918
 919        if ((reg_addr % 4) != 0)
 920                return -EINVAL;
 921
 922        if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr))
 923                return -EINVAL;
 924
 925        ar->debug.dbgfs_diag_reg = reg_addr;
 926
 927        return count;
 928}
 929
 930static const struct file_operations fops_diag_reg_read = {
 931        .read = ath6kl_regread_read,
 932        .write = ath6kl_regread_write,
 933        .open = simple_open,
 934        .owner = THIS_MODULE,
 935        .llseek = default_llseek,
 936};
 937
 938static int ath6kl_regdump_open(struct inode *inode, struct file *file)
 939{
 940        struct ath6kl *ar = inode->i_private;
 941        u8 *buf;
 942        unsigned long int reg_len;
 943        unsigned int len = 0, n_reg;
 944        u32 addr;
 945        __le32 reg_val;
 946        int i, status;
 947
 948        /* Dump all the registers if no register is specified */
 949        if (!ar->debug.dbgfs_diag_reg)
 950                n_reg = ath6kl_get_num_reg();
 951        else
 952                n_reg = 1;
 953
 954        reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE;
 955        if (n_reg > 1)
 956                reg_len += REGTYPE_STR_LEN;
 957
 958        buf = vmalloc(reg_len);
 959        if (!buf)
 960                return -ENOMEM;
 961
 962        if (n_reg == 1) {
 963                addr = ar->debug.dbgfs_diag_reg;
 964
 965                status = ath6kl_diag_read32(ar,
 966                                TARG_VTOP(ar->target_type, addr),
 967                                (u32 *)&reg_val);
 968                if (status)
 969                        goto fail_reg_read;
 970
 971                len += scnprintf(buf + len, reg_len - len,
 972                                 "0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val));
 973                goto done;
 974        }
 975
 976        for (i = 0; i < ARRAY_SIZE(diag_reg); i++) {
 977                len += scnprintf(buf + len, reg_len - len,
 978                                "%s\n", diag_reg[i].reg_info);
 979                for (addr = diag_reg[i].reg_start;
 980                     addr <= diag_reg[i].reg_end; addr += 4) {
 981                        status = ath6kl_diag_read32(ar,
 982                                        TARG_VTOP(ar->target_type, addr),
 983                                        (u32 *)&reg_val);
 984                        if (status)
 985                                goto fail_reg_read;
 986
 987                        len += scnprintf(buf + len, reg_len - len,
 988                                        "0x%06x 0x%08x\n",
 989                                        addr, le32_to_cpu(reg_val));
 990                }
 991        }
 992
 993done:
 994        file->private_data = buf;
 995        return 0;
 996
 997fail_reg_read:
 998        ath6kl_warn("Unable to read memory:%u\n", addr);
 999        vfree(buf);
1000        return -EIO;
1001}
1002
1003static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf,
1004                                  size_t count, loff_t *ppos)
1005{
1006        u8 *buf = file->private_data;
1007        return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
1008}
1009
1010static int ath6kl_regdump_release(struct inode *inode, struct file *file)
1011{
1012        vfree(file->private_data);
1013        return 0;
1014}
1015
1016static const struct file_operations fops_reg_dump = {
1017        .open = ath6kl_regdump_open,
1018        .read = ath6kl_regdump_read,
1019        .release = ath6kl_regdump_release,
1020        .owner = THIS_MODULE,
1021        .llseek = default_llseek,
1022};
1023
1024static ssize_t ath6kl_lrssi_roam_write(struct file *file,
1025                                       const char __user *user_buf,
1026                                       size_t count, loff_t *ppos)
1027{
1028        struct ath6kl *ar = file->private_data;
1029        unsigned long lrssi_roam_threshold;
1030
1031        if (kstrtoul_from_user(user_buf, count, 0, &lrssi_roam_threshold))
1032                return -EINVAL;
1033
1034        ar->lrssi_roam_threshold = lrssi_roam_threshold;
1035
1036        ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold);
1037
1038        return count;
1039}
1040
1041static ssize_t ath6kl_lrssi_roam_read(struct file *file,
1042                                      char __user *user_buf,
1043                                      size_t count, loff_t *ppos)
1044{
1045        struct ath6kl *ar = file->private_data;
1046        char buf[32];
1047        unsigned int len;
1048
1049        len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold);
1050
1051        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1052}
1053
1054static const struct file_operations fops_lrssi_roam_threshold = {
1055        .read = ath6kl_lrssi_roam_read,
1056        .write = ath6kl_lrssi_roam_write,
1057        .open = simple_open,
1058        .owner = THIS_MODULE,
1059        .llseek = default_llseek,
1060};
1061
1062static ssize_t ath6kl_regwrite_read(struct file *file,
1063                                    char __user *user_buf,
1064                                    size_t count, loff_t *ppos)
1065{
1066        struct ath6kl *ar = file->private_data;
1067        u8 buf[32];
1068        unsigned int len = 0;
1069
1070        len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n",
1071                        ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr);
1072
1073        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1074}
1075
1076static ssize_t ath6kl_regwrite_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        char buf[32];
1082        char *sptr, *token;
1083        unsigned int len = 0;
1084        u32 reg_addr, reg_val;
1085
1086        len = min(count, sizeof(buf) - 1);
1087        if (copy_from_user(buf, user_buf, len))
1088                return -EFAULT;
1089
1090        buf[len] = '\0';
1091        sptr = buf;
1092
1093        token = strsep(&sptr, "=");
1094        if (!token)
1095                return -EINVAL;
1096
1097        if (kstrtou32(token, 0, &reg_addr))
1098                return -EINVAL;
1099
1100        if (!ath6kl_dbg_is_diag_reg_valid(reg_addr))
1101                return -EINVAL;
1102
1103        if (kstrtou32(sptr, 0, &reg_val))
1104                return -EINVAL;
1105
1106        ar->debug.diag_reg_addr_wr = reg_addr;
1107        ar->debug.diag_reg_val_wr = reg_val;
1108
1109        if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr,
1110                                cpu_to_le32(ar->debug.diag_reg_val_wr)))
1111                return -EIO;
1112
1113        return count;
1114}
1115
1116static const struct file_operations fops_diag_reg_write = {
1117        .read = ath6kl_regwrite_read,
1118        .write = ath6kl_regwrite_write,
1119        .open = simple_open,
1120        .owner = THIS_MODULE,
1121        .llseek = default_llseek,
1122};
1123
1124int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,
1125                                size_t len)
1126{
1127        const struct wmi_target_roam_tbl *tbl;
1128        u16 num_entries;
1129
1130        if (len < sizeof(*tbl))
1131                return -EINVAL;
1132
1133        tbl = (const struct wmi_target_roam_tbl *) buf;
1134        num_entries = le16_to_cpu(tbl->num_entries);
1135        if (sizeof(*tbl) + num_entries * sizeof(struct wmi_bss_roam_info) >
1136            len)
1137                return -EINVAL;
1138
1139        if (ar->debug.roam_tbl == NULL ||
1140            ar->debug.roam_tbl_len < (unsigned int) len) {
1141                kfree(ar->debug.roam_tbl);
1142                ar->debug.roam_tbl = kmalloc(len, GFP_ATOMIC);
1143                if (ar->debug.roam_tbl == NULL)
1144                        return -ENOMEM;
1145        }
1146
1147        memcpy(ar->debug.roam_tbl, buf, len);
1148        ar->debug.roam_tbl_len = len;
1149
1150        if (test_bit(ROAM_TBL_PEND, &ar->flag)) {
1151                clear_bit(ROAM_TBL_PEND, &ar->flag);
1152                wake_up(&ar->event_wq);
1153        }
1154
1155        return 0;
1156}
1157
1158static ssize_t ath6kl_roam_table_read(struct file *file, char __user *user_buf,
1159                                      size_t count, loff_t *ppos)
1160{
1161        struct ath6kl *ar = file->private_data;
1162        int ret;
1163        long left;
1164        struct wmi_target_roam_tbl *tbl;
1165        u16 num_entries, i;
1166        char *buf;
1167        unsigned int len, buf_len;
1168        ssize_t ret_cnt;
1169
1170        if (down_interruptible(&ar->sem))
1171                return -EBUSY;
1172
1173        set_bit(ROAM_TBL_PEND, &ar->flag);
1174
1175        ret = ath6kl_wmi_get_roam_tbl_cmd(ar->wmi);
1176        if (ret) {
1177                up(&ar->sem);
1178                return ret;
1179        }
1180
1181        left = wait_event_interruptible_timeout(
1182                ar->event_wq, !test_bit(ROAM_TBL_PEND, &ar->flag), WMI_TIMEOUT);
1183        up(&ar->sem);
1184
1185        if (left <= 0)
1186                return -ETIMEDOUT;
1187
1188        if (ar->debug.roam_tbl == NULL)
1189                return -ENOMEM;
1190
1191        tbl = (struct wmi_target_roam_tbl *) ar->debug.roam_tbl;
1192        num_entries = le16_to_cpu(tbl->num_entries);
1193
1194        buf_len = 100 + num_entries * 100;
1195        buf = kzalloc(buf_len, GFP_KERNEL);
1196        if (buf == NULL)
1197                return -ENOMEM;
1198        len = 0;
1199        len += scnprintf(buf + len, buf_len - len,
1200                         "roam_mode=%u\n\n"
1201                         "# roam_util bssid rssi rssidt last_rssi util bias\n",
1202                         le16_to_cpu(tbl->roam_mode));
1203
1204        for (i = 0; i < num_entries; i++) {
1205                struct wmi_bss_roam_info *info = &tbl->info[i];
1206                len += scnprintf(buf + len, buf_len - len,
1207                                 "%d %pM %d %d %d %d %d\n",
1208                                 a_sle32_to_cpu(info->roam_util), info->bssid,
1209                                 info->rssi, info->rssidt, info->last_rssi,
1210                                 info->util, info->bias);
1211        }
1212
1213        if (len > buf_len)
1214                len = buf_len;
1215
1216        ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
1217
1218        kfree(buf);
1219        return ret_cnt;
1220}
1221
1222static const struct file_operations fops_roam_table = {
1223        .read = ath6kl_roam_table_read,
1224        .open = simple_open,
1225        .owner = THIS_MODULE,
1226        .llseek = default_llseek,
1227};
1228
1229static ssize_t ath6kl_force_roam_write(struct file *file,
1230                                       const char __user *user_buf,
1231                                       size_t count, loff_t *ppos)
1232{
1233        struct ath6kl *ar = file->private_data;
1234        int ret;
1235        char buf[20];
1236        size_t len;
1237        u8 bssid[ETH_ALEN];
1238
1239        len = min(count, sizeof(buf) - 1);
1240        if (copy_from_user(buf, user_buf, len))
1241                return -EFAULT;
1242        buf[len] = '\0';
1243
1244        if (!mac_pton(buf, bssid))
1245                return -EINVAL;
1246
1247        ret = ath6kl_wmi_force_roam_cmd(ar->wmi, bssid);
1248        if (ret)
1249                return ret;
1250
1251        return count;
1252}
1253
1254static const struct file_operations fops_force_roam = {
1255        .write = ath6kl_force_roam_write,
1256        .open = simple_open,
1257        .owner = THIS_MODULE,
1258        .llseek = default_llseek,
1259};
1260
1261static ssize_t ath6kl_roam_mode_write(struct file *file,
1262                                      const char __user *user_buf,
1263                                      size_t count, loff_t *ppos)
1264{
1265        struct ath6kl *ar = file->private_data;
1266        int ret;
1267        char buf[20];
1268        size_t len;
1269        enum wmi_roam_mode mode;
1270
1271        len = min(count, sizeof(buf) - 1);
1272        if (copy_from_user(buf, user_buf, len))
1273                return -EFAULT;
1274        buf[len] = '\0';
1275        if (len > 0 && buf[len - 1] == '\n')
1276                buf[len - 1] = '\0';
1277
1278        if (strcasecmp(buf, "default") == 0)
1279                mode = WMI_DEFAULT_ROAM_MODE;
1280        else if (strcasecmp(buf, "bssbias") == 0)
1281                mode = WMI_HOST_BIAS_ROAM_MODE;
1282        else if (strcasecmp(buf, "lock") == 0)
1283                mode = WMI_LOCK_BSS_MODE;
1284        else
1285                return -EINVAL;
1286
1287        ret = ath6kl_wmi_set_roam_mode_cmd(ar->wmi, mode);
1288        if (ret)
1289                return ret;
1290
1291        return count;
1292}
1293
1294static const struct file_operations fops_roam_mode = {
1295        .write = ath6kl_roam_mode_write,
1296        .open = simple_open,
1297        .owner = THIS_MODULE,
1298        .llseek = default_llseek,
1299};
1300
1301void ath6kl_debug_set_keepalive(struct ath6kl *ar, u8 keepalive)
1302{
1303        ar->debug.keepalive = keepalive;
1304}
1305
1306static ssize_t ath6kl_keepalive_read(struct file *file, char __user *user_buf,
1307                                     size_t count, loff_t *ppos)
1308{
1309        struct ath6kl *ar = file->private_data;
1310        char buf[16];
1311        int len;
1312
1313        len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.keepalive);
1314
1315        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1316}
1317
1318static ssize_t ath6kl_keepalive_write(struct file *file,
1319                                      const char __user *user_buf,
1320                                      size_t count, loff_t *ppos)
1321{
1322        struct ath6kl *ar = file->private_data;
1323        int ret;
1324        u8 val;
1325
1326        ret = kstrtou8_from_user(user_buf, count, 0, &val);
1327        if (ret)
1328                return ret;
1329
1330        ret = ath6kl_wmi_set_keepalive_cmd(ar->wmi, 0, val);
1331        if (ret)
1332                return ret;
1333
1334        return count;
1335}
1336
1337static const struct file_operations fops_keepalive = {
1338        .open = simple_open,
1339        .read = ath6kl_keepalive_read,
1340        .write = ath6kl_keepalive_write,
1341        .owner = THIS_MODULE,
1342        .llseek = default_llseek,
1343};
1344
1345void ath6kl_debug_set_disconnect_timeout(struct ath6kl *ar, u8 timeout)
1346{
1347        ar->debug.disc_timeout = timeout;
1348}
1349
1350static ssize_t ath6kl_disconnect_timeout_read(struct file *file,
1351                                              char __user *user_buf,
1352                                              size_t count, loff_t *ppos)
1353{
1354        struct ath6kl *ar = file->private_data;
1355        char buf[16];
1356        int len;
1357
1358        len = snprintf(buf, sizeof(buf), "%u\n", ar->debug.disc_timeout);
1359
1360        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1361}
1362
1363static ssize_t ath6kl_disconnect_timeout_write(struct file *file,
1364                                               const char __user *user_buf,
1365                                               size_t count, loff_t *ppos)
1366{
1367        struct ath6kl *ar = file->private_data;
1368        int ret;
1369        u8 val;
1370
1371        ret = kstrtou8_from_user(user_buf, count, 0, &val);
1372        if (ret)
1373                return ret;
1374
1375        ret = ath6kl_wmi_disctimeout_cmd(ar->wmi, 0, val);
1376        if (ret)
1377                return ret;
1378
1379        return count;
1380}
1381
1382static const struct file_operations fops_disconnect_timeout = {
1383        .open = simple_open,
1384        .read = ath6kl_disconnect_timeout_read,
1385        .write = ath6kl_disconnect_timeout_write,
1386        .owner = THIS_MODULE,
1387        .llseek = default_llseek,
1388};
1389
1390static ssize_t ath6kl_create_qos_write(struct file *file,
1391                                                const char __user *user_buf,
1392                                                size_t count, loff_t *ppos)
1393{
1394        struct ath6kl *ar = file->private_data;
1395        struct ath6kl_vif *vif;
1396        char buf[200];
1397        ssize_t len;
1398        char *sptr, *token;
1399        struct wmi_create_pstream_cmd pstream;
1400        u32 val32;
1401        u16 val16;
1402
1403        vif = ath6kl_vif_first(ar);
1404        if (!vif)
1405                return -EIO;
1406
1407        len = min(count, sizeof(buf) - 1);
1408        if (copy_from_user(buf, user_buf, len))
1409                return -EFAULT;
1410        buf[len] = '\0';
1411        sptr = buf;
1412
1413        token = strsep(&sptr, " ");
1414        if (!token)
1415                return -EINVAL;
1416        if (kstrtou8(token, 0, &pstream.user_pri))
1417                return -EINVAL;
1418
1419        token = strsep(&sptr, " ");
1420        if (!token)
1421                return -EINVAL;
1422        if (kstrtou8(token, 0, &pstream.traffic_direc))
1423                return -EINVAL;
1424
1425        token = strsep(&sptr, " ");
1426        if (!token)
1427                return -EINVAL;
1428        if (kstrtou8(token, 0, &pstream.traffic_class))
1429                return -EINVAL;
1430
1431        token = strsep(&sptr, " ");
1432        if (!token)
1433                return -EINVAL;
1434        if (kstrtou8(token, 0, &pstream.traffic_type))
1435                return -EINVAL;
1436
1437        token = strsep(&sptr, " ");
1438        if (!token)
1439                return -EINVAL;
1440        if (kstrtou8(token, 0, &pstream.voice_psc_cap))
1441                return -EINVAL;
1442
1443        token = strsep(&sptr, " ");
1444        if (!token)
1445                return -EINVAL;
1446        if (kstrtou32(token, 0, &val32))
1447                return -EINVAL;
1448        pstream.min_service_int = cpu_to_le32(val32);
1449
1450        token = strsep(&sptr, " ");
1451        if (!token)
1452                return -EINVAL;
1453        if (kstrtou32(token, 0, &val32))
1454                return -EINVAL;
1455        pstream.max_service_int = cpu_to_le32(val32);
1456
1457        token = strsep(&sptr, " ");
1458        if (!token)
1459                return -EINVAL;
1460        if (kstrtou32(token, 0, &val32))
1461                return -EINVAL;
1462        pstream.inactivity_int = cpu_to_le32(val32);
1463
1464        token = strsep(&sptr, " ");
1465        if (!token)
1466                return -EINVAL;
1467        if (kstrtou32(token, 0, &val32))
1468                return -EINVAL;
1469        pstream.suspension_int = cpu_to_le32(val32);
1470
1471        token = strsep(&sptr, " ");
1472        if (!token)
1473                return -EINVAL;
1474        if (kstrtou32(token, 0, &val32))
1475                return -EINVAL;
1476        pstream.service_start_time = cpu_to_le32(val32);
1477
1478        token = strsep(&sptr, " ");
1479        if (!token)
1480                return -EINVAL;
1481        if (kstrtou8(token, 0, &pstream.tsid))
1482                return -EINVAL;
1483
1484        token = strsep(&sptr, " ");
1485        if (!token)
1486                return -EINVAL;
1487        if (kstrtou16(token, 0, &val16))
1488                return -EINVAL;
1489        pstream.nominal_msdu = cpu_to_le16(val16);
1490
1491        token = strsep(&sptr, " ");
1492        if (!token)
1493                return -EINVAL;
1494        if (kstrtou16(token, 0, &val16))
1495                return -EINVAL;
1496        pstream.max_msdu = cpu_to_le16(val16);
1497
1498        token = strsep(&sptr, " ");
1499        if (!token)
1500                return -EINVAL;
1501        if (kstrtou32(token, 0, &val32))
1502                return -EINVAL;
1503        pstream.min_data_rate = cpu_to_le32(val32);
1504
1505        token = strsep(&sptr, " ");
1506        if (!token)
1507                return -EINVAL;
1508        if (kstrtou32(token, 0, &val32))
1509                return -EINVAL;
1510        pstream.mean_data_rate = cpu_to_le32(val32);
1511
1512        token = strsep(&sptr, " ");
1513        if (!token)
1514                return -EINVAL;
1515        if (kstrtou32(token, 0, &val32))
1516                return -EINVAL;
1517        pstream.peak_data_rate = cpu_to_le32(val32);
1518
1519        token = strsep(&sptr, " ");
1520        if (!token)
1521                return -EINVAL;
1522        if (kstrtou32(token, 0, &val32))
1523                return -EINVAL;
1524        pstream.max_burst_size = cpu_to_le32(val32);
1525
1526        token = strsep(&sptr, " ");
1527        if (!token)
1528                return -EINVAL;
1529        if (kstrtou32(token, 0, &val32))
1530                return -EINVAL;
1531        pstream.delay_bound = cpu_to_le32(val32);
1532
1533        token = strsep(&sptr, " ");
1534        if (!token)
1535                return -EINVAL;
1536        if (kstrtou32(token, 0, &val32))
1537                return -EINVAL;
1538        pstream.min_phy_rate = cpu_to_le32(val32);
1539
1540        token = strsep(&sptr, " ");
1541        if (!token)
1542                return -EINVAL;
1543        if (kstrtou32(token, 0, &val32))
1544                return -EINVAL;
1545        pstream.sba = cpu_to_le32(val32);
1546
1547        token = strsep(&sptr, " ");
1548        if (!token)
1549                return -EINVAL;
1550        if (kstrtou32(token, 0, &val32))
1551                return -EINVAL;
1552        pstream.medium_time = cpu_to_le32(val32);
1553
1554        pstream.nominal_phy = le32_to_cpu(pstream.min_phy_rate) / 1000000;
1555
1556        ath6kl_wmi_create_pstream_cmd(ar->wmi, vif->fw_vif_idx, &pstream);
1557
1558        return count;
1559}
1560
1561static const struct file_operations fops_create_qos = {
1562        .write = ath6kl_create_qos_write,
1563        .open = simple_open,
1564        .owner = THIS_MODULE,
1565        .llseek = default_llseek,
1566};
1567
1568static ssize_t ath6kl_delete_qos_write(struct file *file,
1569                                const char __user *user_buf,
1570                                size_t count, loff_t *ppos)
1571{
1572        struct ath6kl *ar = file->private_data;
1573        struct ath6kl_vif *vif;
1574        char buf[100];
1575        ssize_t len;
1576        char *sptr, *token;
1577        u8 traffic_class;
1578        u8 tsid;
1579
1580        vif = ath6kl_vif_first(ar);
1581        if (!vif)
1582                return -EIO;
1583
1584        len = min(count, sizeof(buf) - 1);
1585        if (copy_from_user(buf, user_buf, len))
1586                return -EFAULT;
1587        buf[len] = '\0';
1588        sptr = buf;
1589
1590        token = strsep(&sptr, " ");
1591        if (!token)
1592                return -EINVAL;
1593        if (kstrtou8(token, 0, &traffic_class))
1594                return -EINVAL;
1595
1596        token = strsep(&sptr, " ");
1597        if (!token)
1598                return -EINVAL;
1599        if (kstrtou8(token, 0, &tsid))
1600                return -EINVAL;
1601
1602        ath6kl_wmi_delete_pstream_cmd(ar->wmi, vif->fw_vif_idx,
1603                                      traffic_class, tsid);
1604
1605        return count;
1606}
1607
1608static const struct file_operations fops_delete_qos = {
1609        .write = ath6kl_delete_qos_write,
1610        .open = simple_open,
1611        .owner = THIS_MODULE,
1612        .llseek = default_llseek,
1613};
1614
1615static ssize_t ath6kl_bgscan_int_write(struct file *file,
1616                                const char __user *user_buf,
1617                                size_t count, loff_t *ppos)
1618{
1619        struct ath6kl *ar = file->private_data;
1620        struct ath6kl_vif *vif;
1621        u16 bgscan_int;
1622        char buf[32];
1623        ssize_t len;
1624
1625        vif = ath6kl_vif_first(ar);
1626        if (!vif)
1627                return -EIO;
1628
1629        len = min(count, sizeof(buf) - 1);
1630        if (copy_from_user(buf, user_buf, len))
1631                return -EFAULT;
1632
1633        buf[len] = '\0';
1634        if (kstrtou16(buf, 0, &bgscan_int))
1635                return -EINVAL;
1636
1637        if (bgscan_int == 0)
1638                bgscan_int = 0xffff;
1639
1640        vif->bg_scan_period = bgscan_int;
1641
1642        ath6kl_wmi_scanparams_cmd(ar->wmi, 0, 0, 0, bgscan_int, 0, 0, 0, 3,
1643                                  0, 0, 0);
1644
1645        return count;
1646}
1647
1648static const struct file_operations fops_bgscan_int = {
1649        .write = ath6kl_bgscan_int_write,
1650        .open = simple_open,
1651        .owner = THIS_MODULE,
1652        .llseek = default_llseek,
1653};
1654
1655static ssize_t ath6kl_listen_int_write(struct file *file,
1656                                       const char __user *user_buf,
1657                                       size_t count, loff_t *ppos)
1658{
1659        struct ath6kl *ar = file->private_data;
1660        struct ath6kl_vif *vif;
1661        u16 listen_interval;
1662        char buf[32];
1663        ssize_t len;
1664
1665        vif = ath6kl_vif_first(ar);
1666        if (!vif)
1667                return -EIO;
1668
1669        len = min(count, sizeof(buf) - 1);
1670        if (copy_from_user(buf, user_buf, len))
1671                return -EFAULT;
1672
1673        buf[len] = '\0';
1674        if (kstrtou16(buf, 0, &listen_interval))
1675                return -EINVAL;
1676
1677        if ((listen_interval < 15) || (listen_interval > 3000))
1678                return -EINVAL;
1679
1680        vif->listen_intvl_t = listen_interval;
1681        ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
1682                                      vif->listen_intvl_t, 0);
1683
1684        return count;
1685}
1686
1687static ssize_t ath6kl_listen_int_read(struct file *file,
1688                                      char __user *user_buf,
1689                                      size_t count, loff_t *ppos)
1690{
1691        struct ath6kl *ar = file->private_data;
1692        struct ath6kl_vif *vif;
1693        char buf[32];
1694        int len;
1695
1696        vif = ath6kl_vif_first(ar);
1697        if (!vif)
1698                return -EIO;
1699
1700        len = scnprintf(buf, sizeof(buf), "%u\n", vif->listen_intvl_t);
1701
1702        return simple_read_from_buffer(user_buf, count, ppos, buf, len);
1703}
1704
1705static const struct file_operations fops_listen_int = {
1706        .read = ath6kl_listen_int_read,
1707        .write = ath6kl_listen_int_write,
1708        .open = simple_open,
1709        .owner = THIS_MODULE,
1710        .llseek = default_llseek,
1711};
1712
1713static ssize_t ath6kl_power_params_write(struct file *file,
1714                                                const char __user *user_buf,
1715                                                size_t count, loff_t *ppos)
1716{
1717        struct ath6kl *ar = file->private_data;
1718        u8 buf[100];
1719        unsigned int len = 0;
1720        char *sptr, *token;
1721        u16 idle_period, ps_poll_num, dtim,
1722                tx_wakeup, num_tx;
1723
1724        len = min(count, sizeof(buf) - 1);
1725        if (copy_from_user(buf, user_buf, len))
1726                return -EFAULT;
1727        buf[len] = '\0';
1728        sptr = buf;
1729
1730        token = strsep(&sptr, " ");
1731        if (!token)
1732                return -EINVAL;
1733        if (kstrtou16(token, 0, &idle_period))
1734                return -EINVAL;
1735
1736        token = strsep(&sptr, " ");
1737        if (!token)
1738                return -EINVAL;
1739        if (kstrtou16(token, 0, &ps_poll_num))
1740                return -EINVAL;
1741
1742        token = strsep(&sptr, " ");
1743        if (!token)
1744                return -EINVAL;
1745        if (kstrtou16(token, 0, &dtim))
1746                return -EINVAL;
1747
1748        token = strsep(&sptr, " ");
1749        if (!token)
1750                return -EINVAL;
1751        if (kstrtou16(token, 0, &tx_wakeup))
1752                return -EINVAL;
1753
1754        token = strsep(&sptr, " ");
1755        if (!token)
1756                return -EINVAL;
1757        if (kstrtou16(token, 0, &num_tx))
1758                return -EINVAL;
1759
1760        ath6kl_wmi_pmparams_cmd(ar->wmi, 0, idle_period, ps_poll_num,
1761                                dtim, tx_wakeup, num_tx, 0);
1762
1763        return count;
1764}
1765
1766static const struct file_operations fops_power_params = {
1767        .write = ath6kl_power_params_write,
1768        .open = simple_open,
1769        .owner = THIS_MODULE,
1770        .llseek = default_llseek,
1771};
1772
1773void ath6kl_debug_init(struct ath6kl *ar)
1774{
1775        skb_queue_head_init(&ar->debug.fwlog_queue);
1776        init_completion(&ar->debug.fwlog_completion);
1777
1778        /*
1779         * Actually we are lying here but don't know how to read the mask
1780         * value from the firmware.
1781         */
1782        ar->debug.fwlog_mask = 0;
1783}
1784
1785/*
1786 * Initialisation needs to happen in two stages as fwlog events can come
1787 * before cfg80211 is initialised, and debugfs depends on cfg80211
1788 * initialisation.
1789 */
1790int ath6kl_debug_init_fs(struct ath6kl *ar)
1791{
1792        ar->debugfs_phy = debugfs_create_dir("ath6kl",
1793                                             ar->wiphy->debugfsdir);
1794        if (!ar->debugfs_phy)
1795                return -ENOMEM;
1796
1797        debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar,
1798                            &fops_tgt_stats);
1799
1800        if (ar->hif_type == ATH6KL_HIF_TYPE_SDIO)
1801                debugfs_create_file("credit_dist_stats", S_IRUSR,
1802                                    ar->debugfs_phy, ar,
1803                                    &fops_credit_dist_stats);
1804
1805        debugfs_create_file("endpoint_stats", S_IRUSR | S_IWUSR,
1806                            ar->debugfs_phy, ar, &fops_endpoint_stats);
1807
1808        debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar,
1809                            &fops_fwlog);
1810
1811        debugfs_create_file("fwlog_block", S_IRUSR, ar->debugfs_phy, ar,
1812                            &fops_fwlog_block);
1813
1814        debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy,
1815                            ar, &fops_fwlog_mask);
1816
1817        debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1818                            &fops_diag_reg_read);
1819
1820        debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar,
1821                            &fops_reg_dump);
1822
1823        debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR,
1824                            ar->debugfs_phy, ar, &fops_lrssi_roam_threshold);
1825
1826        debugfs_create_file("reg_write", S_IRUSR | S_IWUSR,
1827                            ar->debugfs_phy, ar, &fops_diag_reg_write);
1828
1829        debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar,
1830                            &fops_war_stats);
1831
1832        debugfs_create_file("roam_table", S_IRUSR, ar->debugfs_phy, ar,
1833                            &fops_roam_table);
1834
1835        debugfs_create_file("force_roam", S_IWUSR, ar->debugfs_phy, ar,
1836                            &fops_force_roam);
1837
1838        debugfs_create_file("roam_mode", S_IWUSR, ar->debugfs_phy, ar,
1839                            &fops_roam_mode);
1840
1841        debugfs_create_file("keepalive", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar,
1842                            &fops_keepalive);
1843
1844        debugfs_create_file("disconnect_timeout", S_IRUSR | S_IWUSR,
1845                            ar->debugfs_phy, ar, &fops_disconnect_timeout);
1846
1847        debugfs_create_file("create_qos", S_IWUSR, ar->debugfs_phy, ar,
1848                            &fops_create_qos);
1849
1850        debugfs_create_file("delete_qos", S_IWUSR, ar->debugfs_phy, ar,
1851                            &fops_delete_qos);
1852
1853        debugfs_create_file("bgscan_interval", S_IWUSR,
1854                            ar->debugfs_phy, ar, &fops_bgscan_int);
1855
1856        debugfs_create_file("listen_interval", S_IRUSR | S_IWUSR,
1857                            ar->debugfs_phy, ar, &fops_listen_int);
1858
1859        debugfs_create_file("power_params", S_IWUSR, ar->debugfs_phy, ar,
1860                            &fops_power_params);
1861
1862        return 0;
1863}
1864
1865void ath6kl_debug_cleanup(struct ath6kl *ar)
1866{
1867        skb_queue_purge(&ar->debug.fwlog_queue);
1868        complete(&ar->debug.fwlog_completion);
1869        kfree(ar->debug.roam_tbl);
1870}
1871
1872#endif
1873