1 /* 2 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> 3 <http://rt2x00.serialmonkey.com> 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 /* 20 Module: rt2x00lib 21 Abstract: rt2x00 debugfs specific routines. 22 */ 23 24 #include <linux/debugfs.h> 25 #include <linux/kernel.h> 26 #include <linux/module.h> 27 #include <linux/poll.h> 28 #include <linux/sched.h> 29 #include <linux/slab.h> 30 #include <linux/uaccess.h> 31 32 #include "rt2x00.h" 33 #include "rt2x00lib.h" 34 #include "rt2x00dump.h" 35 36 #define MAX_LINE_LENGTH 64 37 38 struct rt2x00debug_crypto { 39 unsigned long success; 40 unsigned long icv_error; 41 unsigned long mic_error; 42 unsigned long key_error; 43 }; 44 45 struct rt2x00debug_intf { 46 /* 47 * Pointer to driver structure where 48 * this debugfs entry belongs to. 49 */ 50 struct rt2x00_dev *rt2x00dev; 51 52 /* 53 * Reference to the rt2x00debug structure 54 * which can be used to communicate with 55 * the registers. 56 */ 57 const struct rt2x00debug *debug; 58 59 /* 60 * Debugfs entries for: 61 * - driver folder 62 * - driver file 63 * - chipset file 64 * - device state flags file 65 * - device capability flags file 66 * - register folder 67 * - csr offset/value files 68 * - eeprom offset/value files 69 * - bbp offset/value files 70 * - rf offset/value files 71 * - rfcsr offset/value files 72 * - queue folder 73 * - frame dump file 74 * - queue stats file 75 * - crypto stats file 76 */ 77 struct dentry *driver_folder; 78 struct dentry *driver_entry; 79 struct dentry *chipset_entry; 80 struct dentry *dev_flags; 81 struct dentry *cap_flags; 82 struct dentry *register_folder; 83 struct dentry *csr_off_entry; 84 struct dentry *csr_val_entry; 85 struct dentry *eeprom_off_entry; 86 struct dentry *eeprom_val_entry; 87 struct dentry *bbp_off_entry; 88 struct dentry *bbp_val_entry; 89 struct dentry *rf_off_entry; 90 struct dentry *rf_val_entry; 91 struct dentry *rfcsr_off_entry; 92 struct dentry *rfcsr_val_entry; 93 struct dentry *queue_folder; 94 struct dentry *queue_frame_dump_entry; 95 struct dentry *queue_stats_entry; 96 struct dentry *crypto_stats_entry; 97 98 /* 99 * The frame dump file only allows a single reader, 100 * so we need to store the current state here. 101 */ 102 unsigned long frame_dump_flags; 103 #define FRAME_DUMP_FILE_OPEN 1 104 105 /* 106 * We queue each frame before dumping it to the user, 107 * per read command we will pass a single skb structure 108 * so we should be prepared to queue multiple sk buffers 109 * before sending it to userspace. 110 */ 111 struct sk_buff_head frame_dump_skbqueue; 112 wait_queue_head_t frame_dump_waitqueue; 113 114 /* 115 * HW crypto statistics. 116 * All statistics are stored separately per cipher type. 117 */ 118 struct rt2x00debug_crypto crypto_stats[CIPHER_MAX]; 119 120 /* 121 * Driver and chipset files will use a data buffer 122 * that has been created in advance. This will simplify 123 * the code since we can use the debugfs functions. 124 */ 125 struct debugfs_blob_wrapper driver_blob; 126 struct debugfs_blob_wrapper chipset_blob; 127 128 /* 129 * Requested offset for each register type. 130 */ 131 unsigned int offset_csr; 132 unsigned int offset_eeprom; 133 unsigned int offset_bbp; 134 unsigned int offset_rf; 135 unsigned int offset_rfcsr; 136 }; 137 138 void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev, 139 struct rxdone_entry_desc *rxdesc) 140 { 141 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf; 142 enum cipher cipher = rxdesc->cipher; 143 enum rx_crypto status = rxdesc->cipher_status; 144 145 if (cipher == CIPHER_TKIP_NO_MIC) 146 cipher = CIPHER_TKIP; 147 if (cipher == CIPHER_NONE || cipher >= CIPHER_MAX) 148 return; 149 150 /* Remove CIPHER_NONE index */ 151 cipher--; 152 153 intf->crypto_stats[cipher].success += (status == RX_CRYPTO_SUCCESS); 154 intf->crypto_stats[cipher].icv_error += (status == RX_CRYPTO_FAIL_ICV); 155 intf->crypto_stats[cipher].mic_error += (status == RX_CRYPTO_FAIL_MIC); 156 intf->crypto_stats[cipher].key_error += (status == RX_CRYPTO_FAIL_KEY); 157 } 158 159 void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev, 160 enum rt2x00_dump_type type, struct queue_entry *entry) 161 { 162 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf; 163 struct sk_buff *skb = entry->skb; 164 struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb); 165 struct sk_buff *skbcopy; 166 struct rt2x00dump_hdr *dump_hdr; 167 struct timespec64 timestamp; 168 u32 data_len; 169 170 if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))) 171 return; 172 173 ktime_get_ts64(×tamp); 174 175 if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) { 176 rt2x00_dbg(rt2x00dev, "txrx dump queue length exceeded\n"); 177 return; 178 } 179 180 data_len = skb->len; 181 if (skbdesc->flags & SKBDESC_DESC_IN_SKB) 182 data_len -= skbdesc->desc_len; 183 184 skbcopy = alloc_skb(sizeof(*dump_hdr) + skbdesc->desc_len + data_len, 185 GFP_ATOMIC); 186 if (!skbcopy) { 187 rt2x00_dbg(rt2x00dev, "Failed to copy skb for dump\n"); 188 return; 189 } 190 191 dump_hdr = skb_put(skbcopy, sizeof(*dump_hdr)); 192 dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION); 193 dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr)); 194 dump_hdr->desc_length = cpu_to_le32(skbdesc->desc_len); 195 dump_hdr->data_length = cpu_to_le32(data_len); 196 dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt); 197 dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf); 198 dump_hdr->chip_rev = cpu_to_le16(rt2x00dev->chip.rev); 199 dump_hdr->type = cpu_to_le16(type); 200 dump_hdr->queue_index = entry->queue->qid; 201 dump_hdr->entry_index = entry->entry_idx; 202 dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec); 203 dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_nsec / 204 NSEC_PER_USEC); 205 206 if (!(skbdesc->flags & SKBDESC_DESC_IN_SKB)) 207 skb_put_data(skbcopy, skbdesc->desc, skbdesc->desc_len); 208 skb_put_data(skbcopy, skb->data, skb->len); 209 210 skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy); 211 wake_up_interruptible(&intf->frame_dump_waitqueue); 212 213 /* 214 * Verify that the file has not been closed while we were working. 215 */ 216 if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) 217 skb_queue_purge(&intf->frame_dump_skbqueue); 218 } 219 EXPORT_SYMBOL_GPL(rt2x00debug_dump_frame); 220 221 static int rt2x00debug_file_open(struct inode *inode, struct file *file) 222 { 223 struct rt2x00debug_intf *intf = inode->i_private; 224 225 file->private_data = inode->i_private; 226 227 if (!try_module_get(intf->debug->owner)) 228 return -EBUSY; 229 230 return 0; 231 } 232 233 static int rt2x00debug_file_release(struct inode *inode, struct file *file) 234 { 235 struct rt2x00debug_intf *intf = file->private_data; 236 237 module_put(intf->debug->owner); 238 239 return 0; 240 } 241 242 static int rt2x00debug_open_queue_dump(struct inode *inode, struct file *file) 243 { 244 struct rt2x00debug_intf *intf = inode->i_private; 245 int retval; 246 247 retval = rt2x00debug_file_open(inode, file); 248 if (retval) 249 return retval; 250 251 if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) { 252 rt2x00debug_file_release(inode, file); 253 return -EBUSY; 254 } 255 256 return 0; 257 } 258 259 static int rt2x00debug_release_queue_dump(struct inode *inode, struct file *file) 260 { 261 struct rt2x00debug_intf *intf = inode->i_private; 262 263 skb_queue_purge(&intf->frame_dump_skbqueue); 264 265 clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags); 266 267 return rt2x00debug_file_release(inode, file); 268 } 269 270 static ssize_t rt2x00debug_read_queue_dump(struct file *file, 271 char __user *buf, 272 size_t length, 273 loff_t *offset) 274 { 275 struct rt2x00debug_intf *intf = file->private_data; 276 struct sk_buff *skb; 277 size_t status; 278 int retval; 279 280 if (file->f_flags & O_NONBLOCK) 281 return -EAGAIN; 282 283 retval = 284 wait_event_interruptible(intf->frame_dump_waitqueue, 285 (skb = 286 skb_dequeue(&intf->frame_dump_skbqueue))); 287 if (retval) 288 return retval; 289 290 status = min_t(size_t, skb->len, length); 291 if (copy_to_user(buf, skb->data, status)) { 292 status = -EFAULT; 293 goto exit; 294 } 295 296 *offset += status; 297 298 exit: 299 kfree_skb(skb); 300 301 return status; 302 } 303 304 static unsigned int rt2x00debug_poll_queue_dump(struct file *file, 305 poll_table *wait) 306 { 307 struct rt2x00debug_intf *intf = file->private_data; 308 309 poll_wait(file, &intf->frame_dump_waitqueue, wait); 310 311 if (!skb_queue_empty(&intf->frame_dump_skbqueue)) 312 return POLLOUT | POLLWRNORM; 313 314 return 0; 315 } 316 317 static const struct file_operations rt2x00debug_fop_queue_dump = { 318 .owner = THIS_MODULE, 319 .read = rt2x00debug_read_queue_dump, 320 .poll = rt2x00debug_poll_queue_dump, 321 .open = rt2x00debug_open_queue_dump, 322 .release = rt2x00debug_release_queue_dump, 323 .llseek = default_llseek, 324 }; 325 326 static ssize_t rt2x00debug_read_queue_stats(struct file *file, 327 char __user *buf, 328 size_t length, 329 loff_t *offset) 330 { 331 struct rt2x00debug_intf *intf = file->private_data; 332 struct data_queue *queue; 333 unsigned long irqflags; 334 unsigned int lines = 1 + intf->rt2x00dev->data_queues; 335 size_t size; 336 char *data; 337 char *temp; 338 339 if (*offset) 340 return 0; 341 342 data = kcalloc(lines, MAX_LINE_LENGTH, GFP_KERNEL); 343 if (!data) 344 return -ENOMEM; 345 346 temp = data + 347 sprintf(data, "qid\tflags\t\tcount\tlimit\tlength\tindex\tdma done\tdone\n"); 348 349 queue_for_each(intf->rt2x00dev, queue) { 350 spin_lock_irqsave(&queue->index_lock, irqflags); 351 352 temp += sprintf(temp, "%d\t0x%.8x\t%d\t%d\t%d\t%d\t%d\t\t%d\n", 353 queue->qid, (unsigned int)queue->flags, 354 queue->count, queue->limit, queue->length, 355 queue->index[Q_INDEX], 356 queue->index[Q_INDEX_DMA_DONE], 357 queue->index[Q_INDEX_DONE]); 358 359 spin_unlock_irqrestore(&queue->index_lock, irqflags); 360 } 361 362 size = strlen(data); 363 size = min(size, length); 364 365 if (copy_to_user(buf, data, size)) { 366 kfree(data); 367 return -EFAULT; 368 } 369 370 kfree(data); 371 372 *offset += size; 373 return size; 374 } 375 376 static const struct file_operations rt2x00debug_fop_queue_stats = { 377 .owner = THIS_MODULE, 378 .read = rt2x00debug_read_queue_stats, 379 .open = rt2x00debug_file_open, 380 .release = rt2x00debug_file_release, 381 .llseek = default_llseek, 382 }; 383 384 #ifdef CONFIG_RT2X00_LIB_CRYPTO 385 static ssize_t rt2x00debug_read_crypto_stats(struct file *file, 386 char __user *buf, 387 size_t length, 388 loff_t *offset) 389 { 390 struct rt2x00debug_intf *intf = file->private_data; 391 static const char * const name[] = { "WEP64", "WEP128", "TKIP", "AES" }; 392 char *data; 393 char *temp; 394 size_t size; 395 unsigned int i; 396 397 if (*offset) 398 return 0; 399 400 data = kzalloc((1 + CIPHER_MAX) * MAX_LINE_LENGTH, GFP_KERNEL); 401 if (!data) 402 return -ENOMEM; 403 404 temp = data; 405 temp += sprintf(data, "cipher\tsuccess\ticv err\tmic err\tkey err\n"); 406 407 for (i = 0; i < CIPHER_MAX; i++) { 408 temp += sprintf(temp, "%s\t%lu\t%lu\t%lu\t%lu\n", name[i], 409 intf->crypto_stats[i].success, 410 intf->crypto_stats[i].icv_error, 411 intf->crypto_stats[i].mic_error, 412 intf->crypto_stats[i].key_error); 413 } 414 415 size = strlen(data); 416 size = min(size, length); 417 418 if (copy_to_user(buf, data, size)) { 419 kfree(data); 420 return -EFAULT; 421 } 422 423 kfree(data); 424 425 *offset += size; 426 return size; 427 } 428 429 static const struct file_operations rt2x00debug_fop_crypto_stats = { 430 .owner = THIS_MODULE, 431 .read = rt2x00debug_read_crypto_stats, 432 .open = rt2x00debug_file_open, 433 .release = rt2x00debug_file_release, 434 .llseek = default_llseek, 435 }; 436 #endif 437 438 #define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \ 439 static ssize_t rt2x00debug_read_##__name(struct file *file, \ 440 char __user *buf, \ 441 size_t length, \ 442 loff_t *offset) \ 443 { \ 444 struct rt2x00debug_intf *intf = file->private_data; \ 445 const struct rt2x00debug *debug = intf->debug; \ 446 char line[16]; \ 447 size_t size; \ 448 unsigned int index = intf->offset_##__name; \ 449 __type value; \ 450 \ 451 if (*offset) \ 452 return 0; \ 453 \ 454 if (index >= debug->__name.word_count) \ 455 return -EINVAL; \ 456 \ 457 index += (debug->__name.word_base / \ 458 debug->__name.word_size); \ 459 \ 460 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \ 461 index *= debug->__name.word_size; \ 462 \ 463 value = debug->__name.read(intf->rt2x00dev, index); \ 464 \ 465 size = sprintf(line, __format, value); \ 466 \ 467 if (copy_to_user(buf, line, size)) \ 468 return -EFAULT; \ 469 \ 470 *offset += size; \ 471 return size; \ 472 } 473 474 #define RT2X00DEBUGFS_OPS_WRITE(__name, __type) \ 475 static ssize_t rt2x00debug_write_##__name(struct file *file, \ 476 const char __user *buf,\ 477 size_t length, \ 478 loff_t *offset) \ 479 { \ 480 struct rt2x00debug_intf *intf = file->private_data; \ 481 const struct rt2x00debug *debug = intf->debug; \ 482 char line[17]; \ 483 size_t size; \ 484 unsigned int index = intf->offset_##__name; \ 485 __type value; \ 486 \ 487 if (*offset) \ 488 return 0; \ 489 \ 490 if (index >= debug->__name.word_count) \ 491 return -EINVAL; \ 492 \ 493 if (length > sizeof(line)) \ 494 return -EINVAL; \ 495 \ 496 if (copy_from_user(line, buf, length)) \ 497 return -EFAULT; \ 498 line[16] = 0; \ 499 \ 500 size = strlen(line); \ 501 value = simple_strtoul(line, NULL, 0); \ 502 \ 503 index += (debug->__name.word_base / \ 504 debug->__name.word_size); \ 505 \ 506 if (debug->__name.flags & RT2X00DEBUGFS_OFFSET) \ 507 index *= debug->__name.word_size; \ 508 \ 509 debug->__name.write(intf->rt2x00dev, index, value); \ 510 \ 511 *offset += size; \ 512 return size; \ 513 } 514 515 #define RT2X00DEBUGFS_OPS(__name, __format, __type) \ 516 RT2X00DEBUGFS_OPS_READ(__name, __format, __type); \ 517 RT2X00DEBUGFS_OPS_WRITE(__name, __type); \ 518 \ 519 static const struct file_operations rt2x00debug_fop_##__name = {\ 520 .owner = THIS_MODULE, \ 521 .read = rt2x00debug_read_##__name, \ 522 .write = rt2x00debug_write_##__name, \ 523 .open = rt2x00debug_file_open, \ 524 .release = rt2x00debug_file_release, \ 525 .llseek = generic_file_llseek, \ 526 }; 527 528 RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32); 529 RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16); 530 RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8); 531 RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32); 532 RT2X00DEBUGFS_OPS(rfcsr, "0x%.2x\n", u8); 533 534 static ssize_t rt2x00debug_read_dev_flags(struct file *file, 535 char __user *buf, 536 size_t length, 537 loff_t *offset) 538 { 539 struct rt2x00debug_intf *intf = file->private_data; 540 char line[16]; 541 size_t size; 542 543 if (*offset) 544 return 0; 545 546 size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags); 547 548 if (copy_to_user(buf, line, size)) 549 return -EFAULT; 550 551 *offset += size; 552 return size; 553 } 554 555 static const struct file_operations rt2x00debug_fop_dev_flags = { 556 .owner = THIS_MODULE, 557 .read = rt2x00debug_read_dev_flags, 558 .open = rt2x00debug_file_open, 559 .release = rt2x00debug_file_release, 560 .llseek = default_llseek, 561 }; 562 563 static ssize_t rt2x00debug_read_cap_flags(struct file *file, 564 char __user *buf, 565 size_t length, 566 loff_t *offset) 567 { 568 struct rt2x00debug_intf *intf = file->private_data; 569 char line[16]; 570 size_t size; 571 572 if (*offset) 573 return 0; 574 575 size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->cap_flags); 576 577 if (copy_to_user(buf, line, size)) 578 return -EFAULT; 579 580 *offset += size; 581 return size; 582 } 583 584 static const struct file_operations rt2x00debug_fop_cap_flags = { 585 .owner = THIS_MODULE, 586 .read = rt2x00debug_read_cap_flags, 587 .open = rt2x00debug_file_open, 588 .release = rt2x00debug_file_release, 589 .llseek = default_llseek, 590 }; 591 592 static struct dentry *rt2x00debug_create_file_driver(const char *name, 593 struct rt2x00debug_intf 594 *intf, 595 struct debugfs_blob_wrapper 596 *blob) 597 { 598 char *data; 599 600 data = kzalloc(3 * MAX_LINE_LENGTH, GFP_KERNEL); 601 if (!data) 602 return NULL; 603 604 blob->data = data; 605 data += sprintf(data, "driver:\t%s\n", intf->rt2x00dev->ops->name); 606 data += sprintf(data, "version:\t%s\n", DRV_VERSION); 607 blob->size = strlen(blob->data); 608 609 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob); 610 } 611 612 static struct dentry *rt2x00debug_create_file_chipset(const char *name, 613 struct rt2x00debug_intf 614 *intf, 615 struct 616 debugfs_blob_wrapper 617 *blob) 618 { 619 const struct rt2x00debug *debug = intf->debug; 620 char *data; 621 622 data = kzalloc(9 * MAX_LINE_LENGTH, GFP_KERNEL); 623 if (!data) 624 return NULL; 625 626 blob->data = data; 627 data += sprintf(data, "rt chip:\t%04x\n", intf->rt2x00dev->chip.rt); 628 data += sprintf(data, "rf chip:\t%04x\n", intf->rt2x00dev->chip.rf); 629 data += sprintf(data, "revision:\t%04x\n", intf->rt2x00dev->chip.rev); 630 data += sprintf(data, "\n"); 631 data += sprintf(data, "register\tbase\twords\twordsize\n"); 632 #define RT2X00DEBUGFS_SPRINTF_REGISTER(__name) \ 633 { \ 634 if (debug->__name.read) \ 635 data += sprintf(data, __stringify(__name) \ 636 "\t%d\t%d\t%d\n", \ 637 debug->__name.word_base, \ 638 debug->__name.word_count, \ 639 debug->__name.word_size); \ 640 } 641 RT2X00DEBUGFS_SPRINTF_REGISTER(csr); 642 RT2X00DEBUGFS_SPRINTF_REGISTER(eeprom); 643 RT2X00DEBUGFS_SPRINTF_REGISTER(bbp); 644 RT2X00DEBUGFS_SPRINTF_REGISTER(rf); 645 RT2X00DEBUGFS_SPRINTF_REGISTER(rfcsr); 646 #undef RT2X00DEBUGFS_SPRINTF_REGISTER 647 648 blob->size = strlen(blob->data); 649 650 return debugfs_create_blob(name, S_IRUSR, intf->driver_folder, blob); 651 } 652 653 void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) 654 { 655 const struct rt2x00debug *debug = rt2x00dev->ops->debugfs; 656 struct rt2x00debug_intf *intf; 657 658 intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL); 659 if (!intf) { 660 rt2x00_err(rt2x00dev, "Failed to allocate debug handler\n"); 661 return; 662 } 663 664 intf->debug = debug; 665 intf->rt2x00dev = rt2x00dev; 666 rt2x00dev->debugfs_intf = intf; 667 668 intf->driver_folder = 669 debugfs_create_dir(intf->rt2x00dev->ops->name, 670 rt2x00dev->hw->wiphy->debugfsdir); 671 if (IS_ERR(intf->driver_folder) || !intf->driver_folder) 672 goto exit; 673 674 intf->driver_entry = 675 rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob); 676 if (IS_ERR(intf->driver_entry) || !intf->driver_entry) 677 goto exit; 678 679 intf->chipset_entry = 680 rt2x00debug_create_file_chipset("chipset", 681 intf, &intf->chipset_blob); 682 if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry) 683 goto exit; 684 685 intf->dev_flags = debugfs_create_file("dev_flags", S_IRUSR, 686 intf->driver_folder, intf, 687 &rt2x00debug_fop_dev_flags); 688 if (IS_ERR(intf->dev_flags) || !intf->dev_flags) 689 goto exit; 690 691 intf->cap_flags = debugfs_create_file("cap_flags", S_IRUSR, 692 intf->driver_folder, intf, 693 &rt2x00debug_fop_cap_flags); 694 if (IS_ERR(intf->cap_flags) || !intf->cap_flags) 695 goto exit; 696 697 intf->register_folder = 698 debugfs_create_dir("register", intf->driver_folder); 699 if (IS_ERR(intf->register_folder) || !intf->register_folder) 700 goto exit; 701 702 #define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \ 703 ({ \ 704 if (debug->__name.read) { \ 705 (__intf)->__name##_off_entry = \ 706 debugfs_create_u32(__stringify(__name) "_offset", \ 707 S_IRUSR | S_IWUSR, \ 708 (__intf)->register_folder, \ 709 &(__intf)->offset_##__name); \ 710 if (IS_ERR((__intf)->__name##_off_entry) \ 711 || !(__intf)->__name##_off_entry) \ 712 goto exit; \ 713 \ 714 (__intf)->__name##_val_entry = \ 715 debugfs_create_file(__stringify(__name) "_value", \ 716 S_IRUSR | S_IWUSR, \ 717 (__intf)->register_folder, \ 718 (__intf), &rt2x00debug_fop_##__name); \ 719 if (IS_ERR((__intf)->__name##_val_entry) \ 720 || !(__intf)->__name##_val_entry) \ 721 goto exit; \ 722 } \ 723 }) 724 725 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr); 726 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom); 727 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp); 728 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf); 729 RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rfcsr); 730 731 #undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY 732 733 intf->queue_folder = 734 debugfs_create_dir("queue", intf->driver_folder); 735 if (IS_ERR(intf->queue_folder) || !intf->queue_folder) 736 goto exit; 737 738 intf->queue_frame_dump_entry = 739 debugfs_create_file("dump", S_IRUSR, intf->queue_folder, 740 intf, &rt2x00debug_fop_queue_dump); 741 if (IS_ERR(intf->queue_frame_dump_entry) 742 || !intf->queue_frame_dump_entry) 743 goto exit; 744 745 skb_queue_head_init(&intf->frame_dump_skbqueue); 746 init_waitqueue_head(&intf->frame_dump_waitqueue); 747 748 intf->queue_stats_entry = 749 debugfs_create_file("queue", S_IRUSR, intf->queue_folder, 750 intf, &rt2x00debug_fop_queue_stats); 751 752 #ifdef CONFIG_RT2X00_LIB_CRYPTO 753 if (rt2x00_has_cap_hw_crypto(rt2x00dev)) 754 intf->crypto_stats_entry = 755 debugfs_create_file("crypto", S_IRUGO, intf->queue_folder, 756 intf, &rt2x00debug_fop_crypto_stats); 757 #endif 758 759 return; 760 761 exit: 762 rt2x00debug_deregister(rt2x00dev); 763 rt2x00_err(rt2x00dev, "Failed to register debug handler\n"); 764 } 765 766 void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev) 767 { 768 struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf; 769 770 if (unlikely(!intf)) 771 return; 772 773 skb_queue_purge(&intf->frame_dump_skbqueue); 774 775 #ifdef CONFIG_RT2X00_LIB_CRYPTO 776 debugfs_remove(intf->crypto_stats_entry); 777 #endif 778 debugfs_remove(intf->queue_stats_entry); 779 debugfs_remove(intf->queue_frame_dump_entry); 780 debugfs_remove(intf->queue_folder); 781 debugfs_remove(intf->rfcsr_val_entry); 782 debugfs_remove(intf->rfcsr_off_entry); 783 debugfs_remove(intf->rf_val_entry); 784 debugfs_remove(intf->rf_off_entry); 785 debugfs_remove(intf->bbp_val_entry); 786 debugfs_remove(intf->bbp_off_entry); 787 debugfs_remove(intf->eeprom_val_entry); 788 debugfs_remove(intf->eeprom_off_entry); 789 debugfs_remove(intf->csr_val_entry); 790 debugfs_remove(intf->csr_off_entry); 791 debugfs_remove(intf->register_folder); 792 debugfs_remove(intf->dev_flags); 793 debugfs_remove(intf->cap_flags); 794 debugfs_remove(intf->chipset_entry); 795 debugfs_remove(intf->driver_entry); 796 debugfs_remove(intf->driver_folder); 797 kfree(intf->chipset_blob.data); 798 kfree(intf->driver_blob.data); 799 kfree(intf); 800 801 rt2x00dev->debugfs_intf = NULL; 802 } 803