Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | Copyright (C) 2004 - 2007 rt2x00 SourceForge Project |
| 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, write to the |
| 17 | Free Software Foundation, Inc., |
| 18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | Module: rt2x00lib |
| 23 | Abstract: rt2x00 debugfs specific routines. |
| 24 | */ |
| 25 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 26 | #include <linux/debugfs.h> |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/module.h> |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 29 | #include <linux/poll.h> |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 30 | #include <linux/uaccess.h> |
| 31 | |
| 32 | #include "rt2x00.h" |
| 33 | #include "rt2x00lib.h" |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 34 | #include "rt2x00dump.h" |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 35 | |
| 36 | #define PRINT_LINE_LEN_MAX 32 |
| 37 | |
| 38 | struct rt2x00debug_intf { |
| 39 | /* |
| 40 | * Pointer to driver structure where |
| 41 | * this debugfs entry belongs to. |
| 42 | */ |
| 43 | struct rt2x00_dev *rt2x00dev; |
| 44 | |
| 45 | /* |
| 46 | * Reference to the rt2x00debug structure |
| 47 | * which can be used to communicate with |
| 48 | * the registers. |
| 49 | */ |
| 50 | const struct rt2x00debug *debug; |
| 51 | |
| 52 | /* |
| 53 | * Debugfs entries for: |
| 54 | * - driver folder |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 55 | * - driver file |
| 56 | * - chipset file |
| 57 | * - device flags file |
| 58 | * - register folder |
| 59 | * - csr offset/value files |
| 60 | * - eeprom offset/value files |
| 61 | * - bbp offset/value files |
| 62 | * - rf offset/value files |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 63 | * - frame dump folder |
| 64 | * - frame dump file |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 65 | */ |
| 66 | struct dentry *driver_folder; |
| 67 | struct dentry *driver_entry; |
| 68 | struct dentry *chipset_entry; |
Ivo van Doorn | 643b252 | 2007-09-25 20:13:51 +0200 | [diff] [blame] | 69 | struct dentry *dev_flags; |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 70 | struct dentry *register_folder; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 71 | struct dentry *csr_off_entry; |
| 72 | struct dentry *csr_val_entry; |
| 73 | struct dentry *eeprom_off_entry; |
| 74 | struct dentry *eeprom_val_entry; |
| 75 | struct dentry *bbp_off_entry; |
| 76 | struct dentry *bbp_val_entry; |
| 77 | struct dentry *rf_off_entry; |
| 78 | struct dentry *rf_val_entry; |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 79 | struct dentry *frame_folder; |
| 80 | struct dentry *frame_dump_entry; |
| 81 | |
| 82 | /* |
| 83 | * The frame dump file only allows a single reader, |
| 84 | * so we need to store the current state here. |
| 85 | */ |
| 86 | unsigned long frame_dump_flags; |
| 87 | #define FRAME_DUMP_FILE_OPEN 1 |
| 88 | |
| 89 | /* |
| 90 | * We queue each frame before dumping it to the user, |
| 91 | * per read command we will pass a single skb structure |
| 92 | * so we should be prepared to queue multiple sk buffers |
| 93 | * before sending it to userspace. |
| 94 | */ |
| 95 | struct sk_buff_head frame_dump_skbqueue; |
| 96 | wait_queue_head_t frame_dump_waitqueue; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 97 | |
| 98 | /* |
| 99 | * Driver and chipset files will use a data buffer |
| 100 | * that has been created in advance. This will simplify |
| 101 | * the code since we can use the debugfs functions. |
| 102 | */ |
| 103 | struct debugfs_blob_wrapper driver_blob; |
| 104 | struct debugfs_blob_wrapper chipset_blob; |
| 105 | |
| 106 | /* |
| 107 | * Requested offset for each register type. |
| 108 | */ |
| 109 | unsigned int offset_csr; |
| 110 | unsigned int offset_eeprom; |
| 111 | unsigned int offset_bbp; |
| 112 | unsigned int offset_rf; |
| 113 | }; |
| 114 | |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 115 | void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev, |
| 116 | struct sk_buff *skb) |
| 117 | { |
| 118 | struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf; |
| 119 | struct skb_desc *desc = get_skb_desc(skb); |
| 120 | struct sk_buff *skbcopy; |
| 121 | struct rt2x00dump_hdr *dump_hdr; |
| 122 | struct timeval timestamp; |
| 123 | unsigned int ring_index; |
| 124 | unsigned int entry_index; |
| 125 | |
| 126 | do_gettimeofday(×tamp); |
| 127 | ring_index = ARRAY_INDEX(desc->ring, rt2x00dev->rx); |
| 128 | entry_index = ARRAY_INDEX(desc->entry, desc->ring->entry); |
| 129 | |
| 130 | if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) |
| 131 | return; |
| 132 | |
| 133 | if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) { |
| 134 | DEBUG(rt2x00dev, "txrx dump queue length exceeded.\n"); |
| 135 | return; |
| 136 | } |
| 137 | |
| 138 | skbcopy = alloc_skb(sizeof(*dump_hdr) + desc->desc_len + desc->data_len, |
| 139 | GFP_ATOMIC); |
| 140 | if (!skbcopy) { |
| 141 | DEBUG(rt2x00dev, "Failed to copy skb for dump.\n"); |
| 142 | return; |
| 143 | } |
| 144 | |
| 145 | dump_hdr = (struct rt2x00dump_hdr *)skb_put(skbcopy, sizeof(*dump_hdr)); |
| 146 | dump_hdr->version = cpu_to_le32(DUMP_HEADER_VERSION); |
| 147 | dump_hdr->header_length = cpu_to_le32(sizeof(*dump_hdr)); |
| 148 | dump_hdr->desc_length = cpu_to_le32(desc->desc_len); |
| 149 | dump_hdr->data_length = cpu_to_le32(desc->data_len); |
| 150 | dump_hdr->chip_rt = cpu_to_le16(rt2x00dev->chip.rt); |
| 151 | dump_hdr->chip_rf = cpu_to_le16(rt2x00dev->chip.rf); |
| 152 | dump_hdr->chip_rev = cpu_to_le32(rt2x00dev->chip.rev); |
| 153 | dump_hdr->type = cpu_to_le16(desc->frame_type); |
| 154 | dump_hdr->ring_index = ring_index; |
| 155 | dump_hdr->entry_index = entry_index; |
| 156 | dump_hdr->timestamp_sec = cpu_to_le32(timestamp.tv_sec); |
| 157 | dump_hdr->timestamp_usec = cpu_to_le32(timestamp.tv_usec); |
| 158 | |
| 159 | memcpy(skb_put(skbcopy, desc->desc_len), desc->desc, desc->desc_len); |
| 160 | memcpy(skb_put(skbcopy, desc->data_len), desc->data, desc->data_len); |
| 161 | |
| 162 | skb_queue_tail(&intf->frame_dump_skbqueue, skbcopy); |
| 163 | wake_up_interruptible(&intf->frame_dump_waitqueue); |
| 164 | |
| 165 | /* |
| 166 | * Verify that the file has not been closed while we were working. |
| 167 | */ |
| 168 | if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) |
| 169 | skb_queue_purge(&intf->frame_dump_skbqueue); |
| 170 | } |
| 171 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 172 | static int rt2x00debug_file_open(struct inode *inode, struct file *file) |
| 173 | { |
| 174 | struct rt2x00debug_intf *intf = inode->i_private; |
| 175 | |
| 176 | file->private_data = inode->i_private; |
| 177 | |
| 178 | if (!try_module_get(intf->debug->owner)) |
| 179 | return -EBUSY; |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | static int rt2x00debug_file_release(struct inode *inode, struct file *file) |
| 185 | { |
| 186 | struct rt2x00debug_intf *intf = file->private_data; |
| 187 | |
| 188 | module_put(intf->debug->owner); |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 193 | static int rt2x00debug_open_ring_dump(struct inode *inode, struct file *file) |
| 194 | { |
| 195 | struct rt2x00debug_intf *intf = inode->i_private; |
| 196 | int retval; |
| 197 | |
| 198 | retval = rt2x00debug_file_open(inode, file); |
| 199 | if (retval) |
| 200 | return retval; |
| 201 | |
| 202 | if (test_and_set_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)) { |
| 203 | rt2x00debug_file_release(inode, file); |
| 204 | return -EBUSY; |
| 205 | } |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static int rt2x00debug_release_ring_dump(struct inode *inode, struct file *file) |
| 211 | { |
| 212 | struct rt2x00debug_intf *intf = inode->i_private; |
| 213 | |
| 214 | skb_queue_purge(&intf->frame_dump_skbqueue); |
| 215 | |
| 216 | clear_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags); |
| 217 | |
| 218 | return rt2x00debug_file_release(inode, file); |
| 219 | } |
| 220 | |
| 221 | static ssize_t rt2x00debug_read_ring_dump(struct file *file, |
| 222 | char __user *buf, |
| 223 | size_t length, |
| 224 | loff_t *offset) |
| 225 | { |
| 226 | struct rt2x00debug_intf *intf = file->private_data; |
| 227 | struct sk_buff *skb; |
| 228 | size_t status; |
| 229 | int retval; |
| 230 | |
| 231 | if (file->f_flags & O_NONBLOCK) |
| 232 | return -EAGAIN; |
| 233 | |
| 234 | retval = |
| 235 | wait_event_interruptible(intf->frame_dump_waitqueue, |
| 236 | (skb = |
| 237 | skb_dequeue(&intf->frame_dump_skbqueue))); |
| 238 | if (retval) |
| 239 | return retval; |
| 240 | |
| 241 | status = min((size_t)skb->len, length); |
| 242 | if (copy_to_user(buf, skb->data, status)) { |
| 243 | status = -EFAULT; |
| 244 | goto exit; |
| 245 | } |
| 246 | |
| 247 | *offset += status; |
| 248 | |
| 249 | exit: |
| 250 | kfree_skb(skb); |
| 251 | |
| 252 | return status; |
| 253 | } |
| 254 | |
| 255 | static unsigned int rt2x00debug_poll_ring_dump(struct file *file, |
| 256 | poll_table *wait) |
| 257 | { |
| 258 | struct rt2x00debug_intf *intf = file->private_data; |
| 259 | |
| 260 | poll_wait(file, &intf->frame_dump_waitqueue, wait); |
| 261 | |
| 262 | if (!skb_queue_empty(&intf->frame_dump_skbqueue)) |
| 263 | return POLLOUT | POLLWRNORM; |
| 264 | |
| 265 | return 0; |
| 266 | } |
| 267 | |
| 268 | static const struct file_operations rt2x00debug_fop_ring_dump = { |
| 269 | .owner = THIS_MODULE, |
| 270 | .read = rt2x00debug_read_ring_dump, |
| 271 | .poll = rt2x00debug_poll_ring_dump, |
| 272 | .open = rt2x00debug_open_ring_dump, |
| 273 | .release = rt2x00debug_release_ring_dump, |
| 274 | }; |
| 275 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 276 | #define RT2X00DEBUGFS_OPS_READ(__name, __format, __type) \ |
| 277 | static ssize_t rt2x00debug_read_##__name(struct file *file, \ |
| 278 | char __user *buf, \ |
| 279 | size_t length, \ |
| 280 | loff_t *offset) \ |
| 281 | { \ |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 282 | struct rt2x00debug_intf *intf = file->private_data; \ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 283 | const struct rt2x00debug *debug = intf->debug; \ |
| 284 | char line[16]; \ |
| 285 | size_t size; \ |
| 286 | __type value; \ |
| 287 | \ |
| 288 | if (*offset) \ |
| 289 | return 0; \ |
| 290 | \ |
| 291 | if (intf->offset_##__name >= debug->__name.word_count) \ |
| 292 | return -EINVAL; \ |
| 293 | \ |
| 294 | debug->__name.read(intf->rt2x00dev, \ |
| 295 | intf->offset_##__name, &value); \ |
| 296 | \ |
| 297 | size = sprintf(line, __format, value); \ |
| 298 | \ |
| 299 | if (copy_to_user(buf, line, size)) \ |
| 300 | return -EFAULT; \ |
| 301 | \ |
| 302 | *offset += size; \ |
| 303 | return size; \ |
| 304 | } |
| 305 | |
| 306 | #define RT2X00DEBUGFS_OPS_WRITE(__name, __type) \ |
| 307 | static ssize_t rt2x00debug_write_##__name(struct file *file, \ |
| 308 | const char __user *buf,\ |
| 309 | size_t length, \ |
| 310 | loff_t *offset) \ |
| 311 | { \ |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 312 | struct rt2x00debug_intf *intf = file->private_data; \ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 313 | const struct rt2x00debug *debug = intf->debug; \ |
| 314 | char line[16]; \ |
| 315 | size_t size; \ |
| 316 | __type value; \ |
| 317 | \ |
| 318 | if (*offset) \ |
| 319 | return 0; \ |
| 320 | \ |
| 321 | if (!capable(CAP_NET_ADMIN)) \ |
| 322 | return -EPERM; \ |
| 323 | \ |
| 324 | if (intf->offset_##__name >= debug->__name.word_count) \ |
| 325 | return -EINVAL; \ |
| 326 | \ |
| 327 | if (copy_from_user(line, buf, length)) \ |
| 328 | return -EFAULT; \ |
| 329 | \ |
| 330 | size = strlen(line); \ |
| 331 | value = simple_strtoul(line, NULL, 0); \ |
| 332 | \ |
| 333 | debug->__name.write(intf->rt2x00dev, \ |
| 334 | intf->offset_##__name, value); \ |
| 335 | \ |
| 336 | *offset += size; \ |
| 337 | return size; \ |
| 338 | } |
| 339 | |
| 340 | #define RT2X00DEBUGFS_OPS(__name, __format, __type) \ |
| 341 | RT2X00DEBUGFS_OPS_READ(__name, __format, __type); \ |
| 342 | RT2X00DEBUGFS_OPS_WRITE(__name, __type); \ |
| 343 | \ |
| 344 | static const struct file_operations rt2x00debug_fop_##__name = {\ |
| 345 | .owner = THIS_MODULE, \ |
| 346 | .read = rt2x00debug_read_##__name, \ |
| 347 | .write = rt2x00debug_write_##__name, \ |
| 348 | .open = rt2x00debug_file_open, \ |
| 349 | .release = rt2x00debug_file_release, \ |
| 350 | }; |
| 351 | |
| 352 | RT2X00DEBUGFS_OPS(csr, "0x%.8x\n", u32); |
| 353 | RT2X00DEBUGFS_OPS(eeprom, "0x%.4x\n", u16); |
| 354 | RT2X00DEBUGFS_OPS(bbp, "0x%.2x\n", u8); |
| 355 | RT2X00DEBUGFS_OPS(rf, "0x%.8x\n", u32); |
| 356 | |
Ivo van Doorn | 643b252 | 2007-09-25 20:13:51 +0200 | [diff] [blame] | 357 | static ssize_t rt2x00debug_read_dev_flags(struct file *file, |
| 358 | char __user *buf, |
| 359 | size_t length, |
| 360 | loff_t *offset) |
| 361 | { |
| 362 | struct rt2x00debug_intf *intf = file->private_data; |
| 363 | char line[16]; |
| 364 | size_t size; |
| 365 | |
| 366 | if (*offset) |
| 367 | return 0; |
| 368 | |
| 369 | size = sprintf(line, "0x%.8x\n", (unsigned int)intf->rt2x00dev->flags); |
| 370 | |
| 371 | if (copy_to_user(buf, line, size)) |
| 372 | return -EFAULT; |
| 373 | |
| 374 | *offset += size; |
| 375 | return size; |
| 376 | } |
| 377 | |
| 378 | static const struct file_operations rt2x00debug_fop_dev_flags = { |
| 379 | .owner = THIS_MODULE, |
| 380 | .read = rt2x00debug_read_dev_flags, |
| 381 | .open = rt2x00debug_file_open, |
| 382 | .release = rt2x00debug_file_release, |
| 383 | }; |
| 384 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 385 | static struct dentry *rt2x00debug_create_file_driver(const char *name, |
| 386 | struct rt2x00debug_intf |
| 387 | *intf, |
| 388 | struct debugfs_blob_wrapper |
| 389 | *blob) |
| 390 | { |
| 391 | char *data; |
| 392 | |
| 393 | data = kzalloc(3 * PRINT_LINE_LEN_MAX, GFP_KERNEL); |
| 394 | if (!data) |
| 395 | return NULL; |
| 396 | |
| 397 | blob->data = data; |
| 398 | data += sprintf(data, "driver: %s\n", intf->rt2x00dev->ops->name); |
| 399 | data += sprintf(data, "version: %s\n", DRV_VERSION); |
| 400 | data += sprintf(data, "compiled: %s %s\n", __DATE__, __TIME__); |
| 401 | blob->size = strlen(blob->data); |
| 402 | |
| 403 | return debugfs_create_blob(name, S_IRUGO, intf->driver_folder, blob); |
| 404 | } |
| 405 | |
| 406 | static struct dentry *rt2x00debug_create_file_chipset(const char *name, |
| 407 | struct rt2x00debug_intf |
| 408 | *intf, |
| 409 | struct |
| 410 | debugfs_blob_wrapper |
| 411 | *blob) |
| 412 | { |
| 413 | const struct rt2x00debug *debug = intf->debug; |
| 414 | char *data; |
| 415 | |
Ivo van Doorn | 22c96c2 | 2007-11-27 21:48:37 +0100 | [diff] [blame] | 416 | data = kzalloc(8 * PRINT_LINE_LEN_MAX, GFP_KERNEL); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 417 | if (!data) |
| 418 | return NULL; |
| 419 | |
Ivo van Doorn | 3e34c6d | 2008-01-06 23:38:10 +0100 | [diff] [blame^] | 420 | blob->data = data; |
Ivo van Doorn | 22c96c2 | 2007-11-27 21:48:37 +0100 | [diff] [blame] | 421 | data += sprintf(data, "rt chip: %04x\n", intf->rt2x00dev->chip.rt); |
| 422 | data += sprintf(data, "rf chip: %04x\n", intf->rt2x00dev->chip.rf); |
| 423 | data += sprintf(data, "revision:%08x\n", intf->rt2x00dev->chip.rev); |
| 424 | data += sprintf(data, "\n"); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 425 | data += sprintf(data, "csr length: %d\n", debug->csr.word_count); |
| 426 | data += sprintf(data, "eeprom length: %d\n", debug->eeprom.word_count); |
| 427 | data += sprintf(data, "bbp length: %d\n", debug->bbp.word_count); |
| 428 | data += sprintf(data, "rf length: %d\n", debug->rf.word_count); |
Ivo van Doorn | 3e34c6d | 2008-01-06 23:38:10 +0100 | [diff] [blame^] | 429 | blob->size = strlen(blob->data); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 430 | |
| 431 | return debugfs_create_blob(name, S_IRUGO, intf->driver_folder, blob); |
| 432 | } |
| 433 | |
| 434 | void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) |
| 435 | { |
| 436 | const struct rt2x00debug *debug = rt2x00dev->ops->debugfs; |
| 437 | struct rt2x00debug_intf *intf; |
| 438 | |
| 439 | intf = kzalloc(sizeof(struct rt2x00debug_intf), GFP_KERNEL); |
| 440 | if (!intf) { |
| 441 | ERROR(rt2x00dev, "Failed to allocate debug handler.\n"); |
| 442 | return; |
| 443 | } |
| 444 | |
| 445 | intf->debug = debug; |
| 446 | intf->rt2x00dev = rt2x00dev; |
| 447 | rt2x00dev->debugfs_intf = intf; |
| 448 | |
| 449 | intf->driver_folder = |
| 450 | debugfs_create_dir(intf->rt2x00dev->ops->name, |
| 451 | rt2x00dev->hw->wiphy->debugfsdir); |
| 452 | if (IS_ERR(intf->driver_folder)) |
| 453 | goto exit; |
| 454 | |
| 455 | intf->driver_entry = |
| 456 | rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob); |
| 457 | if (IS_ERR(intf->driver_entry)) |
| 458 | goto exit; |
| 459 | |
| 460 | intf->chipset_entry = |
| 461 | rt2x00debug_create_file_chipset("chipset", |
| 462 | intf, &intf->chipset_blob); |
| 463 | if (IS_ERR(intf->chipset_entry)) |
| 464 | goto exit; |
| 465 | |
Ivo van Doorn | 643b252 | 2007-09-25 20:13:51 +0200 | [diff] [blame] | 466 | intf->dev_flags = debugfs_create_file("dev_flags", S_IRUGO, |
| 467 | intf->driver_folder, intf, |
| 468 | &rt2x00debug_fop_dev_flags); |
| 469 | if (IS_ERR(intf->dev_flags)) |
| 470 | goto exit; |
| 471 | |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 472 | intf->register_folder = |
| 473 | debugfs_create_dir("register", intf->driver_folder); |
| 474 | if (IS_ERR(intf->register_folder)) |
| 475 | goto exit; |
| 476 | |
| 477 | #define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 478 | ({ \ |
| 479 | (__intf)->__name##_off_entry = \ |
| 480 | debugfs_create_u32(__stringify(__name) "_offset", \ |
| 481 | S_IRUGO | S_IWUSR, \ |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 482 | (__intf)->register_folder, \ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 483 | &(__intf)->offset_##__name); \ |
| 484 | if (IS_ERR((__intf)->__name##_off_entry)) \ |
| 485 | goto exit; \ |
| 486 | \ |
| 487 | (__intf)->__name##_val_entry = \ |
| 488 | debugfs_create_file(__stringify(__name) "_value", \ |
| 489 | S_IRUGO | S_IWUSR, \ |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 490 | (__intf)->register_folder, \ |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 491 | (__intf), &rt2x00debug_fop_##__name);\ |
| 492 | if (IS_ERR((__intf)->__name##_val_entry)) \ |
| 493 | goto exit; \ |
| 494 | }) |
| 495 | |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 496 | RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, csr); |
| 497 | RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, eeprom); |
| 498 | RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, bbp); |
| 499 | RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(intf, rf); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 500 | |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 501 | #undef RT2X00DEBUGFS_CREATE_REGISTER_ENTRY |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 502 | |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 503 | intf->frame_folder = |
| 504 | debugfs_create_dir("frame", intf->driver_folder); |
| 505 | if (IS_ERR(intf->frame_folder)) |
| 506 | goto exit; |
| 507 | |
| 508 | intf->frame_dump_entry = |
| 509 | debugfs_create_file("dump", S_IRUGO, intf->frame_folder, |
| 510 | intf, &rt2x00debug_fop_ring_dump); |
| 511 | if (IS_ERR(intf->frame_dump_entry)) |
| 512 | goto exit; |
| 513 | |
| 514 | skb_queue_head_init(&intf->frame_dump_skbqueue); |
| 515 | init_waitqueue_head(&intf->frame_dump_waitqueue); |
| 516 | |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 517 | return; |
| 518 | |
| 519 | exit: |
| 520 | rt2x00debug_deregister(rt2x00dev); |
| 521 | ERROR(rt2x00dev, "Failed to register debug handler.\n"); |
| 522 | |
| 523 | return; |
| 524 | } |
| 525 | |
| 526 | void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev) |
| 527 | { |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 528 | struct rt2x00debug_intf *intf = rt2x00dev->debugfs_intf; |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 529 | |
| 530 | if (unlikely(!intf)) |
| 531 | return; |
| 532 | |
Ivo van Doorn | 4d8dd66 | 2007-11-27 21:49:29 +0100 | [diff] [blame] | 533 | skb_queue_purge(&intf->frame_dump_skbqueue); |
| 534 | |
| 535 | debugfs_remove(intf->frame_dump_entry); |
| 536 | debugfs_remove(intf->frame_folder); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 537 | debugfs_remove(intf->rf_val_entry); |
| 538 | debugfs_remove(intf->rf_off_entry); |
| 539 | debugfs_remove(intf->bbp_val_entry); |
| 540 | debugfs_remove(intf->bbp_off_entry); |
| 541 | debugfs_remove(intf->eeprom_val_entry); |
| 542 | debugfs_remove(intf->eeprom_off_entry); |
| 543 | debugfs_remove(intf->csr_val_entry); |
| 544 | debugfs_remove(intf->csr_off_entry); |
Ivo van Doorn | 91921a4 | 2007-11-27 21:48:16 +0100 | [diff] [blame] | 545 | debugfs_remove(intf->register_folder); |
Ivo van Doorn | 643b252 | 2007-09-25 20:13:51 +0200 | [diff] [blame] | 546 | debugfs_remove(intf->dev_flags); |
Ivo van Doorn | 95ea362 | 2007-09-25 17:57:13 -0700 | [diff] [blame] | 547 | debugfs_remove(intf->chipset_entry); |
| 548 | debugfs_remove(intf->driver_entry); |
| 549 | debugfs_remove(intf->driver_folder); |
| 550 | kfree(intf->chipset_blob.data); |
| 551 | kfree(intf->driver_blob.data); |
| 552 | kfree(intf); |
| 553 | |
| 554 | rt2x00dev->debugfs_intf = NULL; |
| 555 | } |