linux/drivers/net/wireless/b43/debugfs.c
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   1/*
   2
   3  Broadcom B43 wireless driver
   4
   5  debugfs driver debugging code
   6
   7  Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
   8
   9  This program is free software; you can redistribute it and/or modify
  10  it under the terms of the GNU General Public License as published by
  11  the Free Software Foundation; either version 2 of the License, or
  12  (at your option) any later version.
  13
  14  This program is distributed in the hope that it will be useful,
  15  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  GNU General Public License for more details.
  18
  19  You should have received a copy of the GNU General Public License
  20  along with this program; see the file COPYING.  If not, write to
  21  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  22  Boston, MA 02110-1301, USA.
  23
  24*/
  25
  26#include <linux/fs.h>
  27#include <linux/debugfs.h>
  28#include <linux/slab.h>
  29#include <linux/netdevice.h>
  30#include <linux/pci.h>
  31#include <linux/mutex.h>
  32
  33#include "b43.h"
  34#include "main.h"
  35#include "debugfs.h"
  36#include "dma.h"
  37#include "xmit.h"
  38
  39
  40/* The root directory. */
  41static struct dentry *rootdir;
  42
  43struct b43_debugfs_fops {
  44        ssize_t (*read)(struct b43_wldev *dev, char *buf, size_t bufsize);
  45        int (*write)(struct b43_wldev *dev, const char *buf, size_t count);
  46        struct file_operations fops;
  47        /* Offset of struct b43_dfs_file in struct b43_dfsentry */
  48        size_t file_struct_offset;
  49};
  50
  51static inline
  52struct b43_dfs_file *fops_to_dfs_file(struct b43_wldev *dev,
  53                                      const struct b43_debugfs_fops *dfops)
  54{
  55        void *p;
  56
  57        p = dev->dfsentry;
  58        p += dfops->file_struct_offset;
  59
  60        return p;
  61}
  62
  63
  64#define fappend(fmt, x...)      \
  65        do {                                                    \
  66                if (bufsize - count)                            \
  67                        count += snprintf(buf + count,          \
  68                                          bufsize - count,      \
  69                                          fmt , ##x);           \
  70                else                                            \
  71                        printk(KERN_ERR "b43: fappend overflow\n"); \
  72        } while (0)
  73
  74
  75/* The biggest address values for SHM access from the debugfs files. */
  76#define B43_MAX_SHM_ROUTING     4
  77#define B43_MAX_SHM_ADDR        0xFFFF
  78
  79static ssize_t shm16read__read_file(struct b43_wldev *dev,
  80                                    char *buf, size_t bufsize)
  81{
  82        ssize_t count = 0;
  83        unsigned int routing, addr;
  84        u16 val;
  85
  86        routing = dev->dfsentry->shm16read_routing_next;
  87        addr = dev->dfsentry->shm16read_addr_next;
  88        if ((routing > B43_MAX_SHM_ROUTING) ||
  89            (addr > B43_MAX_SHM_ADDR))
  90                return -EDESTADDRREQ;
  91
  92        val = b43_shm_read16(dev, routing, addr);
  93        fappend("0x%04X\n", val);
  94
  95        return count;
  96}
  97
  98static int shm16read__write_file(struct b43_wldev *dev,
  99                                 const char *buf, size_t count)
 100{
 101        unsigned int routing, addr;
 102        int res;
 103
 104        res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
 105        if (res != 2)
 106                return -EINVAL;
 107        if (routing > B43_MAX_SHM_ROUTING)
 108                return -EADDRNOTAVAIL;
 109        if (addr > B43_MAX_SHM_ADDR)
 110                return -EADDRNOTAVAIL;
 111        if (routing == B43_SHM_SHARED) {
 112                if ((addr % 2) != 0)
 113                        return -EADDRNOTAVAIL;
 114        }
 115
 116        dev->dfsentry->shm16read_routing_next = routing;
 117        dev->dfsentry->shm16read_addr_next = addr;
 118
 119        return 0;
 120}
 121
 122static int shm16write__write_file(struct b43_wldev *dev,
 123                                  const char *buf, size_t count)
 124{
 125        unsigned int routing, addr, mask, set;
 126        u16 val;
 127        int res;
 128
 129        res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
 130                     &routing, &addr, &mask, &set);
 131        if (res != 4)
 132                return -EINVAL;
 133        if (routing > B43_MAX_SHM_ROUTING)
 134                return -EADDRNOTAVAIL;
 135        if (addr > B43_MAX_SHM_ADDR)
 136                return -EADDRNOTAVAIL;
 137        if (routing == B43_SHM_SHARED) {
 138                if ((addr % 2) != 0)
 139                        return -EADDRNOTAVAIL;
 140        }
 141        if ((mask > 0xFFFF) || (set > 0xFFFF))
 142                return -E2BIG;
 143
 144        if (mask == 0)
 145                val = 0;
 146        else
 147                val = b43_shm_read16(dev, routing, addr);
 148        val &= mask;
 149        val |= set;
 150        b43_shm_write16(dev, routing, addr, val);
 151
 152        return 0;
 153}
 154
 155static ssize_t shm32read__read_file(struct b43_wldev *dev,
 156                                    char *buf, size_t bufsize)
 157{
 158        ssize_t count = 0;
 159        unsigned int routing, addr;
 160        u32 val;
 161
 162        routing = dev->dfsentry->shm32read_routing_next;
 163        addr = dev->dfsentry->shm32read_addr_next;
 164        if ((routing > B43_MAX_SHM_ROUTING) ||
 165            (addr > B43_MAX_SHM_ADDR))
 166                return -EDESTADDRREQ;
 167
 168        val = b43_shm_read32(dev, routing, addr);
 169        fappend("0x%08X\n", val);
 170
 171        return count;
 172}
 173
 174static int shm32read__write_file(struct b43_wldev *dev,
 175                                 const char *buf, size_t count)
 176{
 177        unsigned int routing, addr;
 178        int res;
 179
 180        res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
 181        if (res != 2)
 182                return -EINVAL;
 183        if (routing > B43_MAX_SHM_ROUTING)
 184                return -EADDRNOTAVAIL;
 185        if (addr > B43_MAX_SHM_ADDR)
 186                return -EADDRNOTAVAIL;
 187        if (routing == B43_SHM_SHARED) {
 188                if ((addr % 2) != 0)
 189                        return -EADDRNOTAVAIL;
 190        }
 191
 192        dev->dfsentry->shm32read_routing_next = routing;
 193        dev->dfsentry->shm32read_addr_next = addr;
 194
 195        return 0;
 196}
 197
 198static int shm32write__write_file(struct b43_wldev *dev,
 199                                  const char *buf, size_t count)
 200{
 201        unsigned int routing, addr, mask, set;
 202        u32 val;
 203        int res;
 204
 205        res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
 206                     &routing, &addr, &mask, &set);
 207        if (res != 4)
 208                return -EINVAL;
 209        if (routing > B43_MAX_SHM_ROUTING)
 210                return -EADDRNOTAVAIL;
 211        if (addr > B43_MAX_SHM_ADDR)
 212                return -EADDRNOTAVAIL;
 213        if (routing == B43_SHM_SHARED) {
 214                if ((addr % 2) != 0)
 215                        return -EADDRNOTAVAIL;
 216        }
 217        if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
 218                return -E2BIG;
 219
 220        if (mask == 0)
 221                val = 0;
 222        else
 223                val = b43_shm_read32(dev, routing, addr);
 224        val &= mask;
 225        val |= set;
 226        b43_shm_write32(dev, routing, addr, val);
 227
 228        return 0;
 229}
 230
 231/* The biggest MMIO address that we allow access to from the debugfs files. */
 232#define B43_MAX_MMIO_ACCESS     (0xF00 - 1)
 233
 234static ssize_t mmio16read__read_file(struct b43_wldev *dev,
 235                                     char *buf, size_t bufsize)
 236{
 237        ssize_t count = 0;
 238        unsigned int addr;
 239        u16 val;
 240
 241        addr = dev->dfsentry->mmio16read_next;
 242        if (addr > B43_MAX_MMIO_ACCESS)
 243                return -EDESTADDRREQ;
 244
 245        val = b43_read16(dev, addr);
 246        fappend("0x%04X\n", val);
 247
 248        return count;
 249}
 250
 251static int mmio16read__write_file(struct b43_wldev *dev,
 252                                  const char *buf, size_t count)
 253{
 254        unsigned int addr;
 255        int res;
 256
 257        res = sscanf(buf, "0x%X", &addr);
 258        if (res != 1)
 259                return -EINVAL;
 260        if (addr > B43_MAX_MMIO_ACCESS)
 261                return -EADDRNOTAVAIL;
 262        if ((addr % 2) != 0)
 263                return -EINVAL;
 264
 265        dev->dfsentry->mmio16read_next = addr;
 266
 267        return 0;
 268}
 269
 270static int mmio16write__write_file(struct b43_wldev *dev,
 271                                   const char *buf, size_t count)
 272{
 273        unsigned int addr, mask, set;
 274        int res;
 275        u16 val;
 276
 277        res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
 278        if (res != 3)
 279                return -EINVAL;
 280        if (addr > B43_MAX_MMIO_ACCESS)
 281                return -EADDRNOTAVAIL;
 282        if ((mask > 0xFFFF) || (set > 0xFFFF))
 283                return -E2BIG;
 284        if ((addr % 2) != 0)
 285                return -EINVAL;
 286
 287        if (mask == 0)
 288                val = 0;
 289        else
 290                val = b43_read16(dev, addr);
 291        val &= mask;
 292        val |= set;
 293        b43_write16(dev, addr, val);
 294
 295        return 0;
 296}
 297
 298static ssize_t mmio32read__read_file(struct b43_wldev *dev,
 299                                     char *buf, size_t bufsize)
 300{
 301        ssize_t count = 0;
 302        unsigned int addr;
 303        u32 val;
 304
 305        addr = dev->dfsentry->mmio32read_next;
 306        if (addr > B43_MAX_MMIO_ACCESS)
 307                return -EDESTADDRREQ;
 308
 309        val = b43_read32(dev, addr);
 310        fappend("0x%08X\n", val);
 311
 312        return count;
 313}
 314
 315static int mmio32read__write_file(struct b43_wldev *dev,
 316                                  const char *buf, size_t count)
 317{
 318        unsigned int addr;
 319        int res;
 320
 321        res = sscanf(buf, "0x%X", &addr);
 322        if (res != 1)
 323                return -EINVAL;
 324        if (addr > B43_MAX_MMIO_ACCESS)
 325                return -EADDRNOTAVAIL;
 326        if ((addr % 4) != 0)
 327                return -EINVAL;
 328
 329        dev->dfsentry->mmio32read_next = addr;
 330
 331        return 0;
 332}
 333
 334static int mmio32write__write_file(struct b43_wldev *dev,
 335                                   const char *buf, size_t count)
 336{
 337        unsigned int addr, mask, set;
 338        int res;
 339        u32 val;
 340
 341        res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
 342        if (res != 3)
 343                return -EINVAL;
 344        if (addr > B43_MAX_MMIO_ACCESS)
 345                return -EADDRNOTAVAIL;
 346        if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
 347                return -E2BIG;
 348        if ((addr % 4) != 0)
 349                return -EINVAL;
 350
 351        if (mask == 0)
 352                val = 0;
 353        else
 354                val = b43_read32(dev, addr);
 355        val &= mask;
 356        val |= set;
 357        b43_write32(dev, addr, val);
 358
 359        return 0;
 360}
 361
 362static ssize_t txstat_read_file(struct b43_wldev *dev,
 363                                char *buf, size_t bufsize)
 364{
 365        struct b43_txstatus_log *log = &dev->dfsentry->txstatlog;
 366        ssize_t count = 0;
 367        int i, idx;
 368        struct b43_txstatus *stat;
 369
 370        if (log->end < 0) {
 371                fappend("Nothing transmitted, yet\n");
 372                goto out;
 373        }
 374        fappend("b43 TX status reports:\n\n"
 375                "index | cookie | seq | phy_stat | frame_count | "
 376                "rts_count | supp_reason | pm_indicated | "
 377                "intermediate | for_ampdu | acked\n" "---\n");
 378        i = log->end + 1;
 379        idx = 0;
 380        while (1) {
 381                if (i == B43_NR_LOGGED_TXSTATUS)
 382                        i = 0;
 383                stat = &(log->log[i]);
 384                if (stat->cookie) {
 385                        fappend("%03d | "
 386                                "0x%04X | 0x%04X | 0x%02X | "
 387                                "0x%X | 0x%X | "
 388                                "%u | %u | "
 389                                "%u | %u | %u\n",
 390                                idx,
 391                                stat->cookie, stat->seq, stat->phy_stat,
 392                                stat->frame_count, stat->rts_count,
 393                                stat->supp_reason, stat->pm_indicated,
 394                                stat->intermediate, stat->for_ampdu,
 395                                stat->acked);
 396                        idx++;
 397                }
 398                if (i == log->end)
 399                        break;
 400                i++;
 401        }
 402out:
 403
 404        return count;
 405}
 406
 407static int restart_write_file(struct b43_wldev *dev,
 408                              const char *buf, size_t count)
 409{
 410        int err = 0;
 411
 412        if (count > 0 && buf[0] == '1') {
 413                b43_controller_restart(dev, "manually restarted");
 414        } else
 415                err = -EINVAL;
 416
 417        return err;
 418}
 419
 420static unsigned long calc_expire_secs(unsigned long now,
 421                                      unsigned long time,
 422                                      unsigned long expire)
 423{
 424        expire = time + expire;
 425
 426        if (time_after(now, expire))
 427                return 0; /* expired */
 428        if (expire < now) {
 429                /* jiffies wrapped */
 430                expire -= MAX_JIFFY_OFFSET;
 431                now -= MAX_JIFFY_OFFSET;
 432        }
 433        B43_WARN_ON(expire < now);
 434
 435        return (expire - now) / HZ;
 436}
 437
 438static ssize_t loctls_read_file(struct b43_wldev *dev,
 439                                char *buf, size_t bufsize)
 440{
 441        ssize_t count = 0;
 442        struct b43_txpower_lo_control *lo;
 443        int i, err = 0;
 444        struct b43_lo_calib *cal;
 445        unsigned long now = jiffies;
 446        struct b43_phy *phy = &dev->phy;
 447
 448        if (phy->type != B43_PHYTYPE_G) {
 449                fappend("Device is not a G-PHY\n");
 450                err = -ENODEV;
 451                goto out;
 452        }
 453        lo = phy->g->lo_control;
 454        fappend("-- Local Oscillator calibration data --\n\n");
 455        fappend("HW-power-control enabled: %d\n",
 456                dev->phy.hardware_power_control);
 457        fappend("TX Bias: 0x%02X,  TX Magn: 0x%02X  (expire in %lu sec)\n",
 458                lo->tx_bias, lo->tx_magn,
 459                calc_expire_secs(now, lo->txctl_measured_time,
 460                                 B43_LO_TXCTL_EXPIRE));
 461        fappend("Power Vector: 0x%08X%08X  (expires in %lu sec)\n",
 462                (unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32),
 463                (unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL),
 464                calc_expire_secs(now, lo->pwr_vec_read_time,
 465                                 B43_LO_PWRVEC_EXPIRE));
 466
 467        fappend("\nCalibrated settings:\n");
 468        list_for_each_entry(cal, &lo->calib_list, list) {
 469                bool active;
 470
 471                active = (b43_compare_bbatt(&cal->bbatt, &phy->g->bbatt) &&
 472                          b43_compare_rfatt(&cal->rfatt, &phy->g->rfatt));
 473                fappend("BB(%d), RF(%d,%d)  ->  I=%d, Q=%d  "
 474                        "(expires in %lu sec)%s\n",
 475                        cal->bbatt.att,
 476                        cal->rfatt.att, cal->rfatt.with_padmix,
 477                        cal->ctl.i, cal->ctl.q,
 478                        calc_expire_secs(now, cal->calib_time,
 479                                         B43_LO_CALIB_EXPIRE),
 480                        active ? "  ACTIVE" : "");
 481        }
 482
 483        fappend("\nUsed RF attenuation values:  Value(WithPadmix flag)\n");
 484        for (i = 0; i < lo->rfatt_list.len; i++) {
 485                fappend("%u(%d), ",
 486                        lo->rfatt_list.list[i].att,
 487                        lo->rfatt_list.list[i].with_padmix);
 488        }
 489        fappend("\n");
 490        fappend("\nUsed Baseband attenuation values:\n");
 491        for (i = 0; i < lo->bbatt_list.len; i++) {
 492                fappend("%u, ",
 493                        lo->bbatt_list.list[i].att);
 494        }
 495        fappend("\n");
 496
 497out:
 498        return err ? err : count;
 499}
 500
 501#undef fappend
 502
 503static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf,
 504                                size_t count, loff_t *ppos)
 505{
 506        struct b43_wldev *dev;
 507        struct b43_debugfs_fops *dfops;
 508        struct b43_dfs_file *dfile;
 509        ssize_t uninitialized_var(ret);
 510        char *buf;
 511        const size_t bufsize = 1024 * 16; /* 16 kiB buffer */
 512        const size_t buforder = get_order(bufsize);
 513        int err = 0;
 514
 515        if (!count)
 516                return 0;
 517        dev = file->private_data;
 518        if (!dev)
 519                return -ENODEV;
 520
 521        mutex_lock(&dev->wl->mutex);
 522        if (b43_status(dev) < B43_STAT_INITIALIZED) {
 523                err = -ENODEV;
 524                goto out_unlock;
 525        }
 526
 527        dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
 528        if (!dfops->read) {
 529                err = -ENOSYS;
 530                goto out_unlock;
 531        }
 532        dfile = fops_to_dfs_file(dev, dfops);
 533
 534        if (!dfile->buffer) {
 535                buf = (char *)__get_free_pages(GFP_KERNEL, buforder);
 536                if (!buf) {
 537                        err = -ENOMEM;
 538                        goto out_unlock;
 539                }
 540                memset(buf, 0, bufsize);
 541                ret = dfops->read(dev, buf, bufsize);
 542                if (ret <= 0) {
 543                        free_pages((unsigned long)buf, buforder);
 544                        err = ret;
 545                        goto out_unlock;
 546                }
 547                dfile->data_len = ret;
 548                dfile->buffer = buf;
 549        }
 550
 551        ret = simple_read_from_buffer(userbuf, count, ppos,
 552                                      dfile->buffer,
 553                                      dfile->data_len);
 554        if (*ppos >= dfile->data_len) {
 555                free_pages((unsigned long)dfile->buffer, buforder);
 556                dfile->buffer = NULL;
 557                dfile->data_len = 0;
 558        }
 559out_unlock:
 560        mutex_unlock(&dev->wl->mutex);
 561
 562        return err ? err : ret;
 563}
 564
 565static ssize_t b43_debugfs_write(struct file *file,
 566                                 const char __user *userbuf,
 567                                 size_t count, loff_t *ppos)
 568{
 569        struct b43_wldev *dev;
 570        struct b43_debugfs_fops *dfops;
 571        char *buf;
 572        int err = 0;
 573
 574        if (!count)
 575                return 0;
 576        if (count > PAGE_SIZE)
 577                return -E2BIG;
 578        dev = file->private_data;
 579        if (!dev)
 580                return -ENODEV;
 581
 582        mutex_lock(&dev->wl->mutex);
 583        if (b43_status(dev) < B43_STAT_INITIALIZED) {
 584                err = -ENODEV;
 585                goto out_unlock;
 586        }
 587
 588        dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
 589        if (!dfops->write) {
 590                err = -ENOSYS;
 591                goto out_unlock;
 592        }
 593
 594        buf = (char *)get_zeroed_page(GFP_KERNEL);
 595        if (!buf) {
 596                err = -ENOMEM;
 597                goto out_unlock;
 598        }
 599        if (copy_from_user(buf, userbuf, count)) {
 600                err = -EFAULT;
 601                goto out_freepage;
 602        }
 603        err = dfops->write(dev, buf, count);
 604        if (err)
 605                goto out_freepage;
 606
 607out_freepage:
 608        free_page((unsigned long)buf);
 609out_unlock:
 610        mutex_unlock(&dev->wl->mutex);
 611
 612        return err ? err : count;
 613}
 614
 615
 616#define B43_DEBUGFS_FOPS(name, _read, _write)                   \
 617        static struct b43_debugfs_fops fops_##name = {          \
 618                .read   = _read,                                \
 619                .write  = _write,                               \
 620                .fops   = {                                     \
 621                        .open   = simple_open,                  \
 622                        .read   = b43_debugfs_read,             \
 623                        .write  = b43_debugfs_write,            \
 624                        .llseek = generic_file_llseek,          \
 625                },                                              \
 626                .file_struct_offset = offsetof(struct b43_dfsentry, \
 627                                               file_##name),    \
 628        }
 629
 630B43_DEBUGFS_FOPS(shm16read, shm16read__read_file, shm16read__write_file);
 631B43_DEBUGFS_FOPS(shm16write, NULL, shm16write__write_file);
 632B43_DEBUGFS_FOPS(shm32read, shm32read__read_file, shm32read__write_file);
 633B43_DEBUGFS_FOPS(shm32write, NULL, shm32write__write_file);
 634B43_DEBUGFS_FOPS(mmio16read, mmio16read__read_file, mmio16read__write_file);
 635B43_DEBUGFS_FOPS(mmio16write, NULL, mmio16write__write_file);
 636B43_DEBUGFS_FOPS(mmio32read, mmio32read__read_file, mmio32read__write_file);
 637B43_DEBUGFS_FOPS(mmio32write, NULL, mmio32write__write_file);
 638B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL);
 639B43_DEBUGFS_FOPS(restart, NULL, restart_write_file);
 640B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL);
 641
 642
 643bool b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
 644{
 645        bool enabled;
 646
 647        enabled = (dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
 648        if (unlikely(enabled)) {
 649                /* Force full debugging messages, if the user enabled
 650                 * some dynamic debugging feature. */
 651                b43_modparam_verbose = B43_VERBOSITY_MAX;
 652        }
 653
 654        return enabled;
 655}
 656
 657static void b43_remove_dynamic_debug(struct b43_wldev *dev)
 658{
 659        struct b43_dfsentry *e = dev->dfsentry;
 660        int i;
 661
 662        for (i = 0; i < __B43_NR_DYNDBG; i++)
 663                debugfs_remove(e->dyn_debug_dentries[i]);
 664}
 665
 666static void b43_add_dynamic_debug(struct b43_wldev *dev)
 667{
 668        struct b43_dfsentry *e = dev->dfsentry;
 669        struct dentry *d;
 670
 671#define add_dyn_dbg(name, id, initstate) do {           \
 672        e->dyn_debug[id] = (initstate);                 \
 673        d = debugfs_create_bool(name, 0600, e->subdir,  \
 674                                &(e->dyn_debug[id]));   \
 675        if (!IS_ERR(d))                                 \
 676                e->dyn_debug_dentries[id] = d;          \
 677                                } while (0)
 678
 679        add_dyn_dbg("debug_xmitpower", B43_DBG_XMITPOWER, 0);
 680        add_dyn_dbg("debug_dmaoverflow", B43_DBG_DMAOVERFLOW, 0);
 681        add_dyn_dbg("debug_dmaverbose", B43_DBG_DMAVERBOSE, 0);
 682        add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0);
 683        add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0);
 684        add_dyn_dbg("debug_lo", B43_DBG_LO, 0);
 685        add_dyn_dbg("debug_firmware", B43_DBG_FIRMWARE, 0);
 686        add_dyn_dbg("debug_keys", B43_DBG_KEYS, 0);
 687        add_dyn_dbg("debug_verbose_stats", B43_DBG_VERBOSESTATS, 0);
 688
 689#undef add_dyn_dbg
 690}
 691
 692void b43_debugfs_add_device(struct b43_wldev *dev)
 693{
 694        struct b43_dfsentry *e;
 695        struct b43_txstatus_log *log;
 696        char devdir[16];
 697
 698        B43_WARN_ON(!dev);
 699        e = kzalloc(sizeof(*e), GFP_KERNEL);
 700        if (!e) {
 701                b43err(dev->wl, "debugfs: add device OOM\n");
 702                return;
 703        }
 704        e->dev = dev;
 705        log = &e->txstatlog;
 706        log->log = kcalloc(B43_NR_LOGGED_TXSTATUS,
 707                           sizeof(struct b43_txstatus), GFP_KERNEL);
 708        if (!log->log) {
 709                b43err(dev->wl, "debugfs: add device txstatus OOM\n");
 710                kfree(e);
 711                return;
 712        }
 713        log->end = -1;
 714
 715        dev->dfsentry = e;
 716
 717        snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
 718        e->subdir = debugfs_create_dir(devdir, rootdir);
 719        if (!e->subdir || IS_ERR(e->subdir)) {
 720                if (e->subdir == ERR_PTR(-ENODEV)) {
 721                        b43dbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not "
 722                               "enabled in kernel config\n");
 723                } else {
 724                        b43err(dev->wl, "debugfs: cannot create %s directory\n",
 725                               devdir);
 726                }
 727                dev->dfsentry = NULL;
 728                kfree(log->log);
 729                kfree(e);
 730                return;
 731        }
 732
 733        e->mmio16read_next = 0xFFFF; /* invalid address */
 734        e->mmio32read_next = 0xFFFF; /* invalid address */
 735        e->shm16read_routing_next = 0xFFFFFFFF; /* invalid routing */
 736        e->shm16read_addr_next = 0xFFFFFFFF; /* invalid address */
 737        e->shm32read_routing_next = 0xFFFFFFFF; /* invalid routing */
 738        e->shm32read_addr_next = 0xFFFFFFFF; /* invalid address */
 739
 740#define ADD_FILE(name, mode)    \
 741        do {                                                    \
 742                struct dentry *d;                               \
 743                d = debugfs_create_file(__stringify(name),      \
 744                                        mode, e->subdir, dev,   \
 745                                        &fops_##name.fops);     \
 746                e->file_##name.dentry = NULL;                   \
 747                if (!IS_ERR(d))                                 \
 748                        e->file_##name.dentry = d;              \
 749        } while (0)
 750
 751
 752        ADD_FILE(shm16read, 0600);
 753        ADD_FILE(shm16write, 0200);
 754        ADD_FILE(shm32read, 0600);
 755        ADD_FILE(shm32write, 0200);
 756        ADD_FILE(mmio16read, 0600);
 757        ADD_FILE(mmio16write, 0200);
 758        ADD_FILE(mmio32read, 0600);
 759        ADD_FILE(mmio32write, 0200);
 760        ADD_FILE(txstat, 0400);
 761        ADD_FILE(restart, 0200);
 762        ADD_FILE(loctls, 0400);
 763
 764#undef ADD_FILE
 765
 766        b43_add_dynamic_debug(dev);
 767}
 768
 769void b43_debugfs_remove_device(struct b43_wldev *dev)
 770{
 771        struct b43_dfsentry *e;
 772
 773        if (!dev)
 774                return;
 775        e = dev->dfsentry;
 776        if (!e)
 777                return;
 778        b43_remove_dynamic_debug(dev);
 779
 780        debugfs_remove(e->file_shm16read.dentry);
 781        debugfs_remove(e->file_shm16write.dentry);
 782        debugfs_remove(e->file_shm32read.dentry);
 783        debugfs_remove(e->file_shm32write.dentry);
 784        debugfs_remove(e->file_mmio16read.dentry);
 785        debugfs_remove(e->file_mmio16write.dentry);
 786        debugfs_remove(e->file_mmio32read.dentry);
 787        debugfs_remove(e->file_mmio32write.dentry);
 788        debugfs_remove(e->file_txstat.dentry);
 789        debugfs_remove(e->file_restart.dentry);
 790        debugfs_remove(e->file_loctls.dentry);
 791
 792        debugfs_remove(e->subdir);
 793        kfree(e->txstatlog.log);
 794        kfree(e);
 795}
 796
 797void b43_debugfs_log_txstat(struct b43_wldev *dev,
 798                            const struct b43_txstatus *status)
 799{
 800        struct b43_dfsentry *e = dev->dfsentry;
 801        struct b43_txstatus_log *log;
 802        struct b43_txstatus *cur;
 803        int i;
 804
 805        if (!e)
 806                return;
 807        log = &e->txstatlog;
 808        i = log->end + 1;
 809        if (i == B43_NR_LOGGED_TXSTATUS)
 810                i = 0;
 811        log->end = i;
 812        cur = &(log->log[i]);
 813        memcpy(cur, status, sizeof(*cur));
 814}
 815
 816void b43_debugfs_init(void)
 817{
 818        rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
 819        if (IS_ERR(rootdir))
 820                rootdir = NULL;
 821}
 822
 823void b43_debugfs_exit(void)
 824{
 825        debugfs_remove(rootdir);
 826}
 827