git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/b43/debugfs.c

   1 /*
   2
   3   Broadcom B43 wireless driver
   4
   5   debugfs driver debugging code
   6
   7   Copyright (c) 2005-2007 Michael Buesch <mb@bu3sch.de>
   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. */
  41 static struct dentry *rootdir;
  42
  43 struct 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         /* Take wl->irq_lock before calling read/write? */
  50         bool take_irqlock;
  51 };
  52
  53 static inline
  54 struct b43_dfs_file * fops_to_dfs_file(struct b43_wldev *dev,
  55                                        const struct b43_debugfs_fops *dfops)
  56 {
  57         void *p;
  58
  59         p = dev->dfsentry;
  60         p += dfops->file_struct_offset;
  61
  62         return p;
  63 }
  64
  65
  66 #define fappend(fmt, x...)      \
  67         do {                                                    \
  68                 if (bufsize - count)                            \
  69                         count += snprintf(buf + count,          \
  70                                           bufsize - count,      \
  71                                           fmt , ##x);           \
  72                 else                                            \
  73                         printk(KERN_ERR "b43: fappend overflow\n"); \
  74         } while (0)
  75
  76
  77 /* The biggest address values for SHM access from the debugfs files. */
  78 #define B43_MAX_SHM_ROUTING     4
  79 #define B43_MAX_SHM_ADDR        0xFFFF
  80
  81 static ssize_t shm16read__read_file(struct b43_wldev *dev,
  82                                     char *buf, size_t bufsize)
  83 {
  84         ssize_t count = 0;
  85         unsigned int routing, addr;
  86         u16 val;
  87
  88         routing = dev->dfsentry->shm16read_routing_next;
  89         addr = dev->dfsentry->shm16read_addr_next;
  90         if ((routing > B43_MAX_SHM_ROUTING) ||
  91             (addr > B43_MAX_SHM_ADDR))
  92                 return -EDESTADDRREQ;
  93
  94         val = b43_shm_read16(dev, routing, addr);
  95         fappend("0x%04X\n", val);
  96
  97         return count;
  98 }
  99
 100 static int shm16read__write_file(struct b43_wldev *dev,
 101                                  const char *buf, size_t count)
 102 {
 103         unsigned int routing, addr;
 104         int res;
 105
 106         res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
 107         if (res != 2)
 108                 return -EINVAL;
 109         if (routing > B43_MAX_SHM_ROUTING)
 110                 return -EADDRNOTAVAIL;
 111         if (addr > B43_MAX_SHM_ADDR)
 112                 return -EADDRNOTAVAIL;
 113         if (routing == B43_SHM_SHARED) {
 114                 if ((addr % 2) != 0)
 115                         return -EADDRNOTAVAIL;
 116         }
 117
 118         dev->dfsentry->shm16read_routing_next = routing;
 119         dev->dfsentry->shm16read_addr_next = addr;
 120
 121         return 0;
 122 }
 123
 124 static int shm16write__write_file(struct b43_wldev *dev,
 125                                   const char *buf, size_t count)
 126 {
 127         unsigned int routing, addr, mask, set;
 128         u16 val;
 129         int res;
 130         unsigned long flags;
 131
 132         res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
 133                      &routing, &addr, &mask, &set);
 134         if (res != 4)
 135                 return -EINVAL;
 136         if (routing > B43_MAX_SHM_ROUTING)
 137                 return -EADDRNOTAVAIL;
 138         if (addr > B43_MAX_SHM_ADDR)
 139                 return -EADDRNOTAVAIL;
 140         if (routing == B43_SHM_SHARED) {
 141                 if ((addr % 2) != 0)
 142                         return -EADDRNOTAVAIL;
 143         }
 144         if ((mask > 0xFFFF) || (set > 0xFFFF))
 145                 return -E2BIG;
 146
 147         spin_lock_irqsave(&dev->wl->shm_lock, flags);
 148         if (mask == 0)
 149                 val = 0;
 150         else
 151                 val = __b43_shm_read16(dev, routing, addr);
 152         val &= mask;
 153         val |= set;
 154         __b43_shm_write16(dev, routing, addr, val);
 155         spin_unlock_irqrestore(&dev->wl->shm_lock, flags);
 156
 157         return 0;
 158 }
 159
 160 static ssize_t shm32read__read_file(struct b43_wldev *dev,
 161                                     char *buf, size_t bufsize)
 162 {
 163         ssize_t count = 0;
 164         unsigned int routing, addr;
 165         u32 val;
 166
 167         routing = dev->dfsentry->shm32read_routing_next;
 168         addr = dev->dfsentry->shm32read_addr_next;
 169         if ((routing > B43_MAX_SHM_ROUTING) ||
 170             (addr > B43_MAX_SHM_ADDR))
 171                 return -EDESTADDRREQ;
 172
 173         val = b43_shm_read32(dev, routing, addr);
 174         fappend("0x%08X\n", val);
 175
 176         return count;
 177 }
 178
 179 static int shm32read__write_file(struct b43_wldev *dev,
 180                                  const char *buf, size_t count)
 181 {
 182         unsigned int routing, addr;
 183         int res;
 184
 185         res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
 186         if (res != 2)
 187                 return -EINVAL;
 188         if (routing > B43_MAX_SHM_ROUTING)
 189                 return -EADDRNOTAVAIL;
 190         if (addr > B43_MAX_SHM_ADDR)
 191                 return -EADDRNOTAVAIL;
 192         if (routing == B43_SHM_SHARED) {
 193                 if ((addr % 2) != 0)
 194                         return -EADDRNOTAVAIL;
 195         }
 196
 197         dev->dfsentry->shm32read_routing_next = routing;
 198         dev->dfsentry->shm32read_addr_next = addr;
 199
 200         return 0;
 201 }
 202
 203 static int shm32write__write_file(struct b43_wldev *dev,
 204                                   const char *buf, size_t count)
 205 {
 206         unsigned int routing, addr, mask, set;
 207         u32 val;
 208         int res;
 209         unsigned long flags;
 210
 211         res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
 212                      &routing, &addr, &mask, &set);
 213         if (res != 4)
 214                 return -EINVAL;
 215         if (routing > B43_MAX_SHM_ROUTING)
 216                 return -EADDRNOTAVAIL;
 217         if (addr > B43_MAX_SHM_ADDR)
 218                 return -EADDRNOTAVAIL;
 219         if (routing == B43_SHM_SHARED) {
 220                 if ((addr % 2) != 0)
 221                         return -EADDRNOTAVAIL;
 222         }
 223         if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
 224                 return -E2BIG;
 225
 226         spin_lock_irqsave(&dev->wl->shm_lock, flags);
 227         if (mask == 0)
 228                 val = 0;
 229         else
 230                 val = __b43_shm_read32(dev, routing, addr);
 231         val &= mask;
 232         val |= set;
 233         __b43_shm_write32(dev, routing, addr, val);
 234         spin_unlock_irqrestore(&dev->wl->shm_lock, flags);
 235
 236         return 0;
 237 }
 238
 239 /* The biggest MMIO address that we allow access to from the debugfs files. */
 240 #define B43_MAX_MMIO_ACCESS     (0xF00 - 1)
 241
 242 static ssize_t mmio16read__read_file(struct b43_wldev *dev,
 243                                      char *buf, size_t bufsize)
 244 {
 245         ssize_t count = 0;
 246         unsigned int addr;
 247         u16 val;
 248
 249         addr = dev->dfsentry->mmio16read_next;
 250         if (addr > B43_MAX_MMIO_ACCESS)
 251                 return -EDESTADDRREQ;
 252
 253         val = b43_read16(dev, addr);
 254         fappend("0x%04X\n", val);
 255
 256         return count;
 257 }
 258
 259 static int mmio16read__write_file(struct b43_wldev *dev,
 260                                   const char *buf, size_t count)
 261 {
 262         unsigned int addr;
 263         int res;
 264
 265         res = sscanf(buf, "0x%X", &addr);
 266         if (res != 1)
 267                 return -EINVAL;
 268         if (addr > B43_MAX_MMIO_ACCESS)
 269                 return -EADDRNOTAVAIL;
 270         if ((addr % 2) != 0)
 271                 return -EINVAL;
 272
 273         dev->dfsentry->mmio16read_next = addr;
 274
 275         return 0;
 276 }
 277
 278 static int mmio16write__write_file(struct b43_wldev *dev,
 279                                    const char *buf, size_t count)
 280 {
 281         unsigned int addr, mask, set;
 282         int res;
 283         u16 val;
 284
 285         res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
 286         if (res != 3)
 287                 return -EINVAL;
 288         if (addr > B43_MAX_MMIO_ACCESS)
 289                 return -EADDRNOTAVAIL;
 290         if ((mask > 0xFFFF) || (set > 0xFFFF))
 291                 return -E2BIG;
 292         if ((addr % 2) != 0)
 293                 return -EINVAL;
 294
 295         if (mask == 0)
 296                 val = 0;
 297         else
 298                 val = b43_read16(dev, addr);
 299         val &= mask;
 300         val |= set;
 301         b43_write16(dev, addr, val);
 302
 303         return 0;
 304 }
 305
 306 static ssize_t mmio32read__read_file(struct b43_wldev *dev,
 307                                      char *buf, size_t bufsize)
 308 {
 309         ssize_t count = 0;
 310         unsigned int addr;
 311         u32 val;
 312
 313         addr = dev->dfsentry->mmio32read_next;
 314         if (addr > B43_MAX_MMIO_ACCESS)
 315                 return -EDESTADDRREQ;
 316
 317         val = b43_read32(dev, addr);
 318         fappend("0x%08X\n", val);
 319
 320         return count;
 321 }
 322
 323 static int mmio32read__write_file(struct b43_wldev *dev,
 324                                   const char *buf, size_t count)
 325 {
 326         unsigned int addr;
 327         int res;
 328
 329         res = sscanf(buf, "0x%X", &addr);
 330         if (res != 1)
 331                 return -EINVAL;
 332         if (addr > B43_MAX_MMIO_ACCESS)
 333                 return -EADDRNOTAVAIL;
 334         if ((addr % 4) != 0)
 335                 return -EINVAL;
 336
 337         dev->dfsentry->mmio32read_next = addr;
 338
 339         return 0;
 340 }
 341
 342 static int mmio32write__write_file(struct b43_wldev *dev,
 343                                    const char *buf, size_t count)
 344 {
 345         unsigned int addr, mask, set;
 346         int res;
 347         u32 val;
 348
 349         res = sscanf(buf, "0x%X 0x%X 0x%X", &addr, &mask, &set);
 350         if (res != 3)
 351                 return -EINVAL;
 352         if (addr > B43_MAX_MMIO_ACCESS)
 353                 return -EADDRNOTAVAIL;
 354         if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
 355                 return -E2BIG;
 356         if ((addr % 4) != 0)
 357                 return -EINVAL;
 358
 359         if (mask == 0)
 360                 val = 0;
 361         else
 362                 val = b43_read32(dev, addr);
 363         val &= mask;
 364         val |= set;
 365         b43_write32(dev, addr, val);
 366
 367         return 0;
 368 }
 369
 370 /* wl->irq_lock is locked */
 371 static ssize_t tsf_read_file(struct b43_wldev *dev,
 372                              char *buf, size_t bufsize)
 373 {
 374         ssize_t count = 0;
 375         u64 tsf;
 376
 377         b43_tsf_read(dev, &tsf);
 378         fappend("0x%08x%08x\n",
 379                 (unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
 380                 (unsigned int)(tsf & 0xFFFFFFFFULL));
 381
 382         return count;
 383 }
 384
 385 /* wl->irq_lock is locked */
 386 static int tsf_write_file(struct b43_wldev *dev,
 387                           const char *buf, size_t count)
 388 {
 389         u64 tsf;
 390
 391         if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1)
 392                 return -EINVAL;
 393         b43_tsf_write(dev, tsf);
 394
 395         return 0;
 396 }
 397
 398 static ssize_t txstat_read_file(struct b43_wldev *dev,
 399                                 char *buf, size_t bufsize)
 400 {
 401         struct b43_txstatus_log *log = &dev->dfsentry->txstatlog;
 402         ssize_t count = 0;
 403         unsigned long flags;
 404         int i, idx;
 405         struct b43_txstatus *stat;
 406
 407         spin_lock_irqsave(&log->lock, flags);
 408         if (log->end < 0) {
 409                 fappend("Nothing transmitted, yet\n");
 410                 goto out_unlock;
 411         }
 412         fappend("b43 TX status reports:\n\n"
 413                 "index | cookie | seq | phy_stat | frame_count | "
 414                 "rts_count | supp_reason | pm_indicated | "
 415                 "intermediate | for_ampdu | acked\n" "---\n");
 416         i = log->end + 1;
 417         idx = 0;
 418         while (1) {
 419                 if (i == B43_NR_LOGGED_TXSTATUS)
 420                         i = 0;
 421                 stat = &(log->log[i]);
 422                 if (stat->cookie) {
 423                         fappend("%03d | "
 424                                 "0x%04X | 0x%04X | 0x%02X | "
 425                                 "0x%X | 0x%X | "
 426                                 "%u | %u | "
 427                                 "%u | %u | %u\n",
 428                                 idx,
 429                                 stat->cookie, stat->seq, stat->phy_stat,
 430                                 stat->frame_count, stat->rts_count,
 431                                 stat->supp_reason, stat->pm_indicated,
 432                                 stat->intermediate, stat->for_ampdu,
 433                                 stat->acked);
 434                         idx++;
 435                 }
 436                 if (i == log->end)
 437                         break;
 438                 i++;
 439         }
 440 out_unlock:
 441         spin_unlock_irqrestore(&log->lock, flags);
 442
 443         return count;
 444 }
 445
 446 /* wl->irq_lock is locked */
 447 static int restart_write_file(struct b43_wldev *dev,
 448                               const char *buf, size_t count)
 449 {
 450         int err = 0;
 451
 452         if (count > 0 && buf[0] == '1') {
 453                 b43_controller_restart(dev, "manually restarted");
 454         } else
 455                 err = -EINVAL;
 456
 457         return err;
 458 }
 459
 460 static unsigned long calc_expire_secs(unsigned long now,
 461                                       unsigned long time,
 462                                       unsigned long expire)
 463 {
 464         expire = time + expire;
 465
 466         if (time_after(now, expire))
 467                 return 0; /* expired */
 468         if (expire < now) {
 469                 /* jiffies wrapped */
 470                 expire -= MAX_JIFFY_OFFSET;
 471                 now -= MAX_JIFFY_OFFSET;
 472         }
 473         B43_WARN_ON(expire < now);
 474
 475         return (expire - now) / HZ;
 476 }
 477
 478 static ssize_t loctls_read_file(struct b43_wldev *dev,
 479                                 char *buf, size_t bufsize)
 480 {
 481         ssize_t count = 0;
 482         struct b43_txpower_lo_control *lo;
 483         int i, err = 0;
 484         struct b43_lo_calib *cal;
 485         unsigned long now = jiffies;
 486         struct b43_phy *phy = &dev->phy;
 487
 488         if (phy->type != B43_PHYTYPE_G) {
 489                 fappend("Device is not a G-PHY\n");
 490                 err = -ENODEV;
 491                 goto out;
 492         }
 493         lo = phy->g->lo_control;
 494         fappend("-- Local Oscillator calibration data --\n\n");
 495         fappend("HW-power-control enabled: %d\n",
 496                 dev->phy.hardware_power_control);
 497         fappend("TX Bias: 0x%02X,  TX Magn: 0x%02X  (expire in %lu sec)\n",
 498                 lo->tx_bias, lo->tx_magn,
 499                 calc_expire_secs(now, lo->txctl_measured_time,
 500                                  B43_LO_TXCTL_EXPIRE));
 501         fappend("Power Vector: 0x%08X%08X  (expires in %lu sec)\n",
 502                 (unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32),
 503                 (unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL),
 504                 calc_expire_secs(now, lo->pwr_vec_read_time,
 505                                  B43_LO_PWRVEC_EXPIRE));
 506
 507         fappend("\nCalibrated settings:\n");
 508         list_for_each_entry(cal, &lo->calib_list, list) {
 509                 bool active;
 510
 511                 active = (b43_compare_bbatt(&cal->bbatt, &phy->g->bbatt) &&
 512                           b43_compare_rfatt(&cal->rfatt, &phy->g->rfatt));
 513                 fappend("BB(%d), RF(%d,%d)  ->  I=%d, Q=%d  "
 514                         "(expires in %lu sec)%s\n",
 515                         cal->bbatt.att,
 516                         cal->rfatt.att, cal->rfatt.with_padmix,
 517                         cal->ctl.i, cal->ctl.q,
 518                         calc_expire_secs(now, cal->calib_time,
 519                                          B43_LO_CALIB_EXPIRE),
 520                         active ? "  ACTIVE" : "");
 521         }
 522
 523         fappend("\nUsed RF attenuation values:  Value(WithPadmix flag)\n");
 524         for (i = 0; i < lo->rfatt_list.len; i++) {
 525                 fappend("%u(%d), ",
 526                         lo->rfatt_list.list[i].att,
 527                         lo->rfatt_list.list[i].with_padmix);
 528         }
 529         fappend("\n");
 530         fappend("\nUsed Baseband attenuation values:\n");
 531         for (i = 0; i < lo->bbatt_list.len; i++) {
 532                 fappend("%u, ",
 533                         lo->bbatt_list.list[i].att);
 534         }
 535         fappend("\n");
 536
 537 out:
 538         return err ? err : count;
 539 }
 540
 541 #undef fappend
 542
 543 static int b43_debugfs_open(struct inode *inode, struct file *file)
 544 {
 545         file->private_data = inode->i_private;
 546         return 0;
 547 }
 548
 549 static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf,
 550                                 size_t count, loff_t *ppos)
 551 {
 552         struct b43_wldev *dev;
 553         struct b43_debugfs_fops *dfops;
 554         struct b43_dfs_file *dfile;
 555         ssize_t uninitialized_var(ret);
 556         char *buf;
 557         const size_t bufsize = 1024 * 16; /* 16 kiB buffer */
 558         const size_t buforder = get_order(bufsize);
 559         int err = 0;
 560
 561         if (!count)
 562                 return 0;
 563         dev = file->private_data;
 564         if (!dev)
 565                 return -ENODEV;
 566
 567         mutex_lock(&dev->wl->mutex);
 568         if (b43_status(dev) < B43_STAT_INITIALIZED) {
 569                 err = -ENODEV;
 570                 goto out_unlock;
 571         }
 572
 573         dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
 574         if (!dfops->read) {
 575                 err = -ENOSYS;
 576                 goto out_unlock;
 577         }
 578         dfile = fops_to_dfs_file(dev, dfops);
 579
 580         if (!dfile->buffer) {
 581                 buf = (char *)__get_free_pages(GFP_KERNEL, buforder);
 582                 if (!buf) {
 583                         err = -ENOMEM;
 584                         goto out_unlock;
 585                 }
 586                 memset(buf, 0, bufsize);
 587                 if (dfops->take_irqlock) {
 588                         spin_lock_irq(&dev->wl->irq_lock);
 589                         ret = dfops->read(dev, buf, bufsize);
 590                         spin_unlock_irq(&dev->wl->irq_lock);
 591                 } else
 592                         ret = dfops->read(dev, buf, bufsize);
 593                 if (ret <= 0) {
 594                         free_pages((unsigned long)buf, buforder);
 595                         err = ret;
 596                         goto out_unlock;
 597                 }
 598                 dfile->data_len = ret;
 599                 dfile->buffer = buf;
 600         }
 601
 602         ret = simple_read_from_buffer(userbuf, count, ppos,
 603                                       dfile->buffer,
 604                                       dfile->data_len);
 605         if (*ppos >= dfile->data_len) {
 606                 free_pages((unsigned long)dfile->buffer, buforder);
 607                 dfile->buffer = NULL;
 608                 dfile->data_len = 0;
 609         }
 610 out_unlock:
 611         mutex_unlock(&dev->wl->mutex);
 612
 613         return err ? err : ret;
 614 }
 615
 616 static ssize_t b43_debugfs_write(struct file *file,
 617                                  const char __user *userbuf,
 618                                  size_t count, loff_t *ppos)
 619 {
 620         struct b43_wldev *dev;
 621         struct b43_debugfs_fops *dfops;
 622         char *buf;
 623         int err = 0;
 624
 625         if (!count)
 626                 return 0;
 627         if (count > PAGE_SIZE)
 628                 return -E2BIG;
 629         dev = file->private_data;
 630         if (!dev)
 631                 return -ENODEV;
 632
 633         mutex_lock(&dev->wl->mutex);
 634         if (b43_status(dev) < B43_STAT_INITIALIZED) {
 635                 err = -ENODEV;
 636                 goto out_unlock;
 637         }
 638
 639         dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
 640         if (!dfops->write) {
 641                 err = -ENOSYS;
 642                 goto out_unlock;
 643         }
 644
 645         buf = (char *)get_zeroed_page(GFP_KERNEL);
 646         if (!buf) {
 647                 err = -ENOMEM;
 648                 goto out_unlock;
 649         }
 650         if (copy_from_user(buf, userbuf, count)) {
 651                 err = -EFAULT;
 652                 goto out_freepage;
 653         }
 654         if (dfops->take_irqlock) {
 655                 spin_lock_irq(&dev->wl->irq_lock);
 656                 err = dfops->write(dev, buf, count);
 657                 spin_unlock_irq(&dev->wl->irq_lock);
 658         } else
 659                 err = dfops->write(dev, buf, count);
 660         if (err)
 661                 goto out_freepage;
 662
 663 out_freepage:
 664         free_page((unsigned long)buf);
 665 out_unlock:
 666         mutex_unlock(&dev->wl->mutex);
 667
 668         return err ? err : count;
 669 }
 670
 671
 672 #define B43_DEBUGFS_FOPS(name, _read, _write, _take_irqlock)    \
 673         static struct b43_debugfs_fops fops_##name = {          \
 674                 .read   = _read,                                \
 675                 .write  = _write,                               \
 676                 .fops   = {                                     \
 677                         .open   = b43_debugfs_open,             \
 678                         .read   = b43_debugfs_read,             \
 679                         .write  = b43_debugfs_write,            \
 680                 },                                              \
 681                 .file_struct_offset = offsetof(struct b43_dfsentry, \
 682                                                file_##name),    \
 683                 .take_irqlock   = _take_irqlock,                \
 684         }
 685
 686 B43_DEBUGFS_FOPS(shm16read, shm16read__read_file, shm16read__write_file, 1);
 687 B43_DEBUGFS_FOPS(shm16write, NULL, shm16write__write_file, 1);
 688 B43_DEBUGFS_FOPS(shm32read, shm32read__read_file, shm32read__write_file, 1);
 689 B43_DEBUGFS_FOPS(shm32write, NULL, shm32write__write_file, 1);
 690 B43_DEBUGFS_FOPS(mmio16read, mmio16read__read_file, mmio16read__write_file, 1);
 691 B43_DEBUGFS_FOPS(mmio16write, NULL, mmio16write__write_file, 1);
 692 B43_DEBUGFS_FOPS(mmio32read, mmio32read__read_file, mmio32read__write_file, 1);
 693 B43_DEBUGFS_FOPS(mmio32write, NULL, mmio32write__write_file, 1);
 694 B43_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1);
 695 B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0);
 696 B43_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1);
 697 B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL, 0);
 698
 699
 700 int b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
 701 {
 702         return !!(dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
 703 }
 704
 705 static void b43_remove_dynamic_debug(struct b43_wldev *dev)
 706 {
 707         struct b43_dfsentry *e = dev->dfsentry;
 708         int i;
 709
 710         for (i = 0; i < __B43_NR_DYNDBG; i++)
 711                 debugfs_remove(e->dyn_debug_dentries[i]);
 712 }
 713
 714 static void b43_add_dynamic_debug(struct b43_wldev *dev)
 715 {
 716         struct b43_dfsentry *e = dev->dfsentry;
 717         struct dentry *d;
 718
 719 #define add_dyn_dbg(name, id, initstate) do {           \
 720         e->dyn_debug[id] = (initstate);                 \
 721         d = debugfs_create_bool(name, 0600, e->subdir,  \
 722                                 &(e->dyn_debug[id]));   \
 723         if (!IS_ERR(d))                                 \
 724                 e->dyn_debug_dentries[id] = d;          \
 725                                 } while (0)
 726
 727         add_dyn_dbg("debug_xmitpower", B43_DBG_XMITPOWER, 0);
 728         add_dyn_dbg("debug_dmaoverflow", B43_DBG_DMAOVERFLOW, 0);
 729         add_dyn_dbg("debug_dmaverbose", B43_DBG_DMAVERBOSE, 0);
 730         add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0);
 731         add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0);
 732         add_dyn_dbg("debug_lo", B43_DBG_LO, 0);
 733         add_dyn_dbg("debug_firmware", B43_DBG_FIRMWARE, 0);
 734
 735 #undef add_dyn_dbg
 736 }
 737
 738 void b43_debugfs_add_device(struct b43_wldev *dev)
 739 {
 740         struct b43_dfsentry *e;
 741         struct b43_txstatus_log *log;
 742         char devdir[16];
 743
 744         B43_WARN_ON(!dev);
 745         e = kzalloc(sizeof(*e), GFP_KERNEL);
 746         if (!e) {
 747                 b43err(dev->wl, "debugfs: add device OOM\n");
 748                 return;
 749         }
 750         e->dev = dev;
 751         log = &e->txstatlog;
 752         log->log = kcalloc(B43_NR_LOGGED_TXSTATUS,
 753                            sizeof(struct b43_txstatus), GFP_KERNEL);
 754         if (!log->log) {
 755                 b43err(dev->wl, "debugfs: add device txstatus OOM\n");
 756                 kfree(e);
 757                 return;
 758         }
 759         log->end = -1;
 760         spin_lock_init(&log->lock);
 761
 762         dev->dfsentry = e;
 763
 764         snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
 765         e->subdir = debugfs_create_dir(devdir, rootdir);
 766         if (!e->subdir || IS_ERR(e->subdir)) {
 767                 if (e->subdir == ERR_PTR(-ENODEV)) {
 768                         b43dbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not "
 769                                "enabled in kernel config\n");
 770                 } else {
 771                         b43err(dev->wl, "debugfs: cannot create %s directory\n",
 772                                devdir);
 773                 }
 774                 dev->dfsentry = NULL;
 775                 kfree(log->log);
 776                 kfree(e);
 777                 return;
 778         }
 779
 780         e->mmio16read_next = 0xFFFF; /* invalid address */
 781         e->mmio32read_next = 0xFFFF; /* invalid address */
 782         e->shm16read_routing_next = 0xFFFFFFFF; /* invalid routing */
 783         e->shm16read_addr_next = 0xFFFFFFFF; /* invalid address */
 784         e->shm32read_routing_next = 0xFFFFFFFF; /* invalid routing */
 785         e->shm32read_addr_next = 0xFFFFFFFF; /* invalid address */
 786
 787 #define ADD_FILE(name, mode)    \
 788         do {                                                    \
 789                 struct dentry *d;                               \
 790                 d = debugfs_create_file(__stringify(name),      \
 791                                         mode, e->subdir, dev,   \
 792                                         &fops_##name.fops);     \
 793                 e->file_##name.dentry = NULL;                   \
 794                 if (!IS_ERR(d))                                 \
 795                         e->file_##name.dentry = d;              \
 796         } while (0)
 797
 798
 799         ADD_FILE(shm16read, 0600);
 800         ADD_FILE(shm16write, 0200);
 801         ADD_FILE(shm32read, 0600);
 802         ADD_FILE(shm32write, 0200);
 803         ADD_FILE(mmio16read, 0600);
 804         ADD_FILE(mmio16write, 0200);
 805         ADD_FILE(mmio32read, 0600);
 806         ADD_FILE(mmio32write, 0200);
 807         ADD_FILE(tsf, 0600);
 808         ADD_FILE(txstat, 0400);
 809         ADD_FILE(restart, 0200);
 810         ADD_FILE(loctls, 0400);
 811
 812 #undef ADD_FILE
 813
 814         b43_add_dynamic_debug(dev);
 815 }
 816
 817 void b43_debugfs_remove_device(struct b43_wldev *dev)
 818 {
 819         struct b43_dfsentry *e;
 820
 821         if (!dev)
 822                 return;
 823         e = dev->dfsentry;
 824         if (!e)
 825                 return;
 826         b43_remove_dynamic_debug(dev);
 827
 828         debugfs_remove(e->file_shm16read.dentry);
 829         debugfs_remove(e->file_shm16write.dentry);
 830         debugfs_remove(e->file_shm32read.dentry);
 831         debugfs_remove(e->file_shm32write.dentry);
 832         debugfs_remove(e->file_mmio16read.dentry);
 833         debugfs_remove(e->file_mmio16write.dentry);
 834         debugfs_remove(e->file_mmio32read.dentry);
 835         debugfs_remove(e->file_mmio32write.dentry);
 836         debugfs_remove(e->file_tsf.dentry);
 837         debugfs_remove(e->file_txstat.dentry);
 838         debugfs_remove(e->file_restart.dentry);
 839         debugfs_remove(e->file_loctls.dentry);
 840
 841         debugfs_remove(e->subdir);
 842         kfree(e->txstatlog.log);
 843         kfree(e);
 844 }
 845
 846 /* Called with IRQs disabled. */
 847 void b43_debugfs_log_txstat(struct b43_wldev *dev,
 848                             const struct b43_txstatus *status)
 849 {
 850         struct b43_dfsentry *e = dev->dfsentry;
 851         struct b43_txstatus_log *log;
 852         struct b43_txstatus *cur;
 853         int i;
 854
 855         if (!e)
 856                 return;
 857         log = &e->txstatlog;
 858         spin_lock(&log->lock); /* IRQs are already disabled. */
 859         i = log->end + 1;
 860         if (i == B43_NR_LOGGED_TXSTATUS)
 861                 i = 0;
 862         log->end = i;
 863         cur = &(log->log[i]);
 864         memcpy(cur, status, sizeof(*cur));
 865         spin_unlock(&log->lock);
 866 }
 867
 868 void b43_debugfs_init(void)
 869 {
 870         rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
 871         if (IS_ERR(rootdir))
 872                 rootdir = NULL;
 873 }
 874
 875 void b43_debugfs_exit(void)
 876 {
 877         debugfs_remove(rootdir);
 878 }