1 /* 2 * Copyright (c) 2008-2009 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/slab.h> 18 #include <asm/unaligned.h> 19 20 #include "ath9k.h" 21 22 #define REG_WRITE_D(_ah, _reg, _val) \ 23 ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg)) 24 #define REG_READ_D(_ah, _reg) \ 25 ath9k_hw_common(_ah)->ops->read((_ah), (_reg)) 26 27 static int ath9k_debugfs_open(struct inode *inode, struct file *file) 28 { 29 file->private_data = inode->i_private; 30 return 0; 31 } 32 33 #ifdef CONFIG_ATH_DEBUG 34 35 static ssize_t read_file_debug(struct file *file, char __user *user_buf, 36 size_t count, loff_t *ppos) 37 { 38 struct ath_softc *sc = file->private_data; 39 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 40 char buf[32]; 41 unsigned int len; 42 43 len = sprintf(buf, "0x%08x\n", common->debug_mask); 44 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 45 } 46 47 static ssize_t write_file_debug(struct file *file, const char __user *user_buf, 48 size_t count, loff_t *ppos) 49 { 50 struct ath_softc *sc = file->private_data; 51 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 52 unsigned long mask; 53 char buf[32]; 54 ssize_t len; 55 56 len = min(count, sizeof(buf) - 1); 57 if (copy_from_user(buf, user_buf, len)) 58 return -EFAULT; 59 60 buf[len] = '\0'; 61 if (strict_strtoul(buf, 0, &mask)) 62 return -EINVAL; 63 64 common->debug_mask = mask; 65 return count; 66 } 67 68 static const struct file_operations fops_debug = { 69 .read = read_file_debug, 70 .write = write_file_debug, 71 .open = ath9k_debugfs_open, 72 .owner = THIS_MODULE, 73 .llseek = default_llseek, 74 }; 75 76 #endif 77 78 #define DMA_BUF_LEN 1024 79 80 static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf, 81 size_t count, loff_t *ppos) 82 { 83 struct ath_softc *sc = file->private_data; 84 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 85 char buf[32]; 86 unsigned int len; 87 88 len = sprintf(buf, "0x%08x\n", common->tx_chainmask); 89 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 90 } 91 92 static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf, 93 size_t count, loff_t *ppos) 94 { 95 struct ath_softc *sc = file->private_data; 96 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 97 unsigned long mask; 98 char buf[32]; 99 ssize_t len; 100 101 len = min(count, sizeof(buf) - 1); 102 if (copy_from_user(buf, user_buf, len)) 103 return -EFAULT; 104 105 buf[len] = '\0'; 106 if (strict_strtoul(buf, 0, &mask)) 107 return -EINVAL; 108 109 common->tx_chainmask = mask; 110 sc->sc_ah->caps.tx_chainmask = mask; 111 return count; 112 } 113 114 static const struct file_operations fops_tx_chainmask = { 115 .read = read_file_tx_chainmask, 116 .write = write_file_tx_chainmask, 117 .open = ath9k_debugfs_open, 118 .owner = THIS_MODULE, 119 .llseek = default_llseek, 120 }; 121 122 123 static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf, 124 size_t count, loff_t *ppos) 125 { 126 struct ath_softc *sc = file->private_data; 127 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 128 char buf[32]; 129 unsigned int len; 130 131 len = sprintf(buf, "0x%08x\n", common->rx_chainmask); 132 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 133 } 134 135 static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf, 136 size_t count, loff_t *ppos) 137 { 138 struct ath_softc *sc = file->private_data; 139 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 140 unsigned long mask; 141 char buf[32]; 142 ssize_t len; 143 144 len = min(count, sizeof(buf) - 1); 145 if (copy_from_user(buf, user_buf, len)) 146 return -EFAULT; 147 148 buf[len] = '\0'; 149 if (strict_strtoul(buf, 0, &mask)) 150 return -EINVAL; 151 152 common->rx_chainmask = mask; 153 sc->sc_ah->caps.rx_chainmask = mask; 154 return count; 155 } 156 157 static const struct file_operations fops_rx_chainmask = { 158 .read = read_file_rx_chainmask, 159 .write = write_file_rx_chainmask, 160 .open = ath9k_debugfs_open, 161 .owner = THIS_MODULE, 162 .llseek = default_llseek, 163 }; 164 165 166 static ssize_t read_file_dma(struct file *file, char __user *user_buf, 167 size_t count, loff_t *ppos) 168 { 169 struct ath_softc *sc = file->private_data; 170 struct ath_hw *ah = sc->sc_ah; 171 char *buf; 172 int retval; 173 unsigned int len = 0; 174 u32 val[ATH9K_NUM_DMA_DEBUG_REGS]; 175 int i, qcuOffset = 0, dcuOffset = 0; 176 u32 *qcuBase = &val[0], *dcuBase = &val[4]; 177 178 buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL); 179 if (!buf) 180 return -ENOMEM; 181 182 ath9k_ps_wakeup(sc); 183 184 REG_WRITE_D(ah, AR_MACMISC, 185 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) | 186 (AR_MACMISC_MISC_OBS_BUS_1 << 187 AR_MACMISC_MISC_OBS_BUS_MSB_S))); 188 189 len += snprintf(buf + len, DMA_BUF_LEN - len, 190 "Raw DMA Debug values:\n"); 191 192 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) { 193 if (i % 4 == 0) 194 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 195 196 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32))); 197 len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ", 198 i, val[i]); 199 } 200 201 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n"); 202 len += snprintf(buf + len, DMA_BUF_LEN - len, 203 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n"); 204 205 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) { 206 if (i == 8) { 207 qcuOffset = 0; 208 qcuBase++; 209 } 210 211 if (i == 6) { 212 dcuOffset = 0; 213 dcuBase++; 214 } 215 216 len += snprintf(buf + len, DMA_BUF_LEN - len, 217 "%2d %2x %1x %2x %2x\n", 218 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset, 219 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3), 220 val[2] & (0x7 << (i * 3)) >> (i * 3), 221 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset); 222 } 223 224 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 225 226 len += snprintf(buf + len, DMA_BUF_LEN - len, 227 "qcu_stitch state: %2x qcu_fetch state: %2x\n", 228 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22); 229 len += snprintf(buf + len, DMA_BUF_LEN - len, 230 "qcu_complete state: %2x dcu_complete state: %2x\n", 231 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3)); 232 len += snprintf(buf + len, DMA_BUF_LEN - len, 233 "dcu_arb state: %2x dcu_fp state: %2x\n", 234 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27); 235 len += snprintf(buf + len, DMA_BUF_LEN - len, 236 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n", 237 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10); 238 len += snprintf(buf + len, DMA_BUF_LEN - len, 239 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n", 240 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12); 241 len += snprintf(buf + len, DMA_BUF_LEN - len, 242 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n", 243 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17); 244 245 len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n", 246 REG_READ_D(ah, AR_OBS_BUS_1)); 247 len += snprintf(buf + len, DMA_BUF_LEN - len, 248 "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR)); 249 250 ath9k_ps_restore(sc); 251 252 if (len > DMA_BUF_LEN) 253 len = DMA_BUF_LEN; 254 255 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 256 kfree(buf); 257 return retval; 258 } 259 260 static const struct file_operations fops_dma = { 261 .read = read_file_dma, 262 .open = ath9k_debugfs_open, 263 .owner = THIS_MODULE, 264 .llseek = default_llseek, 265 }; 266 267 268 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status) 269 { 270 if (status) 271 sc->debug.stats.istats.total++; 272 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 273 if (status & ATH9K_INT_RXLP) 274 sc->debug.stats.istats.rxlp++; 275 if (status & ATH9K_INT_RXHP) 276 sc->debug.stats.istats.rxhp++; 277 if (status & ATH9K_INT_BB_WATCHDOG) 278 sc->debug.stats.istats.bb_watchdog++; 279 } else { 280 if (status & ATH9K_INT_RX) 281 sc->debug.stats.istats.rxok++; 282 } 283 if (status & ATH9K_INT_RXEOL) 284 sc->debug.stats.istats.rxeol++; 285 if (status & ATH9K_INT_RXORN) 286 sc->debug.stats.istats.rxorn++; 287 if (status & ATH9K_INT_TX) 288 sc->debug.stats.istats.txok++; 289 if (status & ATH9K_INT_TXURN) 290 sc->debug.stats.istats.txurn++; 291 if (status & ATH9K_INT_MIB) 292 sc->debug.stats.istats.mib++; 293 if (status & ATH9K_INT_RXPHY) 294 sc->debug.stats.istats.rxphyerr++; 295 if (status & ATH9K_INT_RXKCM) 296 sc->debug.stats.istats.rx_keycache_miss++; 297 if (status & ATH9K_INT_SWBA) 298 sc->debug.stats.istats.swba++; 299 if (status & ATH9K_INT_BMISS) 300 sc->debug.stats.istats.bmiss++; 301 if (status & ATH9K_INT_BNR) 302 sc->debug.stats.istats.bnr++; 303 if (status & ATH9K_INT_CST) 304 sc->debug.stats.istats.cst++; 305 if (status & ATH9K_INT_GTT) 306 sc->debug.stats.istats.gtt++; 307 if (status & ATH9K_INT_TIM) 308 sc->debug.stats.istats.tim++; 309 if (status & ATH9K_INT_CABEND) 310 sc->debug.stats.istats.cabend++; 311 if (status & ATH9K_INT_DTIMSYNC) 312 sc->debug.stats.istats.dtimsync++; 313 if (status & ATH9K_INT_DTIM) 314 sc->debug.stats.istats.dtim++; 315 } 316 317 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf, 318 size_t count, loff_t *ppos) 319 { 320 struct ath_softc *sc = file->private_data; 321 char buf[512]; 322 unsigned int len = 0; 323 324 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 325 len += snprintf(buf + len, sizeof(buf) - len, 326 "%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp); 327 len += snprintf(buf + len, sizeof(buf) - len, 328 "%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp); 329 len += snprintf(buf + len, sizeof(buf) - len, 330 "%8s: %10u\n", "WATCHDOG", 331 sc->debug.stats.istats.bb_watchdog); 332 } else { 333 len += snprintf(buf + len, sizeof(buf) - len, 334 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok); 335 } 336 len += snprintf(buf + len, sizeof(buf) - len, 337 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol); 338 len += snprintf(buf + len, sizeof(buf) - len, 339 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn); 340 len += snprintf(buf + len, sizeof(buf) - len, 341 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok); 342 len += snprintf(buf + len, sizeof(buf) - len, 343 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn); 344 len += snprintf(buf + len, sizeof(buf) - len, 345 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib); 346 len += snprintf(buf + len, sizeof(buf) - len, 347 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr); 348 len += snprintf(buf + len, sizeof(buf) - len, 349 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss); 350 len += snprintf(buf + len, sizeof(buf) - len, 351 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba); 352 len += snprintf(buf + len, sizeof(buf) - len, 353 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss); 354 len += snprintf(buf + len, sizeof(buf) - len, 355 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr); 356 len += snprintf(buf + len, sizeof(buf) - len, 357 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst); 358 len += snprintf(buf + len, sizeof(buf) - len, 359 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt); 360 len += snprintf(buf + len, sizeof(buf) - len, 361 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim); 362 len += snprintf(buf + len, sizeof(buf) - len, 363 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend); 364 len += snprintf(buf + len, sizeof(buf) - len, 365 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync); 366 len += snprintf(buf + len, sizeof(buf) - len, 367 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim); 368 len += snprintf(buf + len, sizeof(buf) - len, 369 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total); 370 371 if (len > sizeof(buf)) 372 len = sizeof(buf); 373 374 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 375 } 376 377 static const struct file_operations fops_interrupt = { 378 .read = read_file_interrupt, 379 .open = ath9k_debugfs_open, 380 .owner = THIS_MODULE, 381 .llseek = default_llseek, 382 }; 383 384 static const char * ath_wiphy_state_str(enum ath_wiphy_state state) 385 { 386 switch (state) { 387 case ATH_WIPHY_INACTIVE: 388 return "INACTIVE"; 389 case ATH_WIPHY_ACTIVE: 390 return "ACTIVE"; 391 case ATH_WIPHY_PAUSING: 392 return "PAUSING"; 393 case ATH_WIPHY_PAUSED: 394 return "PAUSED"; 395 case ATH_WIPHY_SCAN: 396 return "SCAN"; 397 } 398 return "?"; 399 } 400 401 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, 402 size_t count, loff_t *ppos) 403 { 404 struct ath_softc *sc = file->private_data; 405 struct ath_wiphy *aphy = sc->pri_wiphy; 406 struct ieee80211_channel *chan = aphy->hw->conf.channel; 407 char buf[512]; 408 unsigned int len = 0; 409 int i; 410 u8 addr[ETH_ALEN]; 411 u32 tmp; 412 413 len += snprintf(buf + len, sizeof(buf) - len, 414 "primary: %s (%s chan=%d ht=%d)\n", 415 wiphy_name(sc->pri_wiphy->hw->wiphy), 416 ath_wiphy_state_str(sc->pri_wiphy->state), 417 ieee80211_frequency_to_channel(chan->center_freq), 418 aphy->chan_is_ht); 419 420 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); 421 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); 422 len += snprintf(buf + len, sizeof(buf) - len, 423 "addr: %pM\n", addr); 424 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr); 425 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); 426 len += snprintf(buf + len, sizeof(buf) - len, 427 "addrmask: %pM\n", addr); 428 tmp = ath9k_hw_getrxfilter(sc->sc_ah); 429 len += snprintf(buf + len, sizeof(buf) - len, 430 "rfilt: 0x%x", tmp); 431 if (tmp & ATH9K_RX_FILTER_UCAST) 432 len += snprintf(buf + len, sizeof(buf) - len, " UCAST"); 433 if (tmp & ATH9K_RX_FILTER_MCAST) 434 len += snprintf(buf + len, sizeof(buf) - len, " MCAST"); 435 if (tmp & ATH9K_RX_FILTER_BCAST) 436 len += snprintf(buf + len, sizeof(buf) - len, " BCAST"); 437 if (tmp & ATH9K_RX_FILTER_CONTROL) 438 len += snprintf(buf + len, sizeof(buf) - len, " CONTROL"); 439 if (tmp & ATH9K_RX_FILTER_BEACON) 440 len += snprintf(buf + len, sizeof(buf) - len, " BEACON"); 441 if (tmp & ATH9K_RX_FILTER_PROM) 442 len += snprintf(buf + len, sizeof(buf) - len, " PROM"); 443 if (tmp & ATH9K_RX_FILTER_PROBEREQ) 444 len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ"); 445 if (tmp & ATH9K_RX_FILTER_PHYERR) 446 len += snprintf(buf + len, sizeof(buf) - len, " PHYERR"); 447 if (tmp & ATH9K_RX_FILTER_MYBEACON) 448 len += snprintf(buf + len, sizeof(buf) - len, " MYBEACON"); 449 if (tmp & ATH9K_RX_FILTER_COMP_BAR) 450 len += snprintf(buf + len, sizeof(buf) - len, " COMP_BAR"); 451 if (tmp & ATH9K_RX_FILTER_PSPOLL) 452 len += snprintf(buf + len, sizeof(buf) - len, " PSPOLL"); 453 if (tmp & ATH9K_RX_FILTER_PHYRADAR) 454 len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR"); 455 if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL) 456 len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n"); 457 else 458 len += snprintf(buf + len, sizeof(buf) - len, "\n"); 459 460 /* Put variable-length stuff down here, and check for overflows. */ 461 for (i = 0; i < sc->num_sec_wiphy; i++) { 462 struct ath_wiphy *aphy_tmp = sc->sec_wiphy[i]; 463 if (aphy_tmp == NULL) 464 continue; 465 chan = aphy_tmp->hw->conf.channel; 466 len += snprintf(buf + len, sizeof(buf) - len, 467 "secondary: %s (%s chan=%d ht=%d)\n", 468 wiphy_name(aphy_tmp->hw->wiphy), 469 ath_wiphy_state_str(aphy_tmp->state), 470 ieee80211_frequency_to_channel(chan->center_freq), 471 aphy_tmp->chan_is_ht); 472 } 473 if (len > sizeof(buf)) 474 len = sizeof(buf); 475 476 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 477 } 478 479 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name) 480 { 481 int i; 482 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0) 483 return sc->pri_wiphy; 484 for (i = 0; i < sc->num_sec_wiphy; i++) { 485 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 486 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0) 487 return aphy; 488 } 489 return NULL; 490 } 491 492 static int del_wiphy(struct ath_softc *sc, const char *name) 493 { 494 struct ath_wiphy *aphy = get_wiphy(sc, name); 495 if (!aphy) 496 return -ENOENT; 497 return ath9k_wiphy_del(aphy); 498 } 499 500 static int pause_wiphy(struct ath_softc *sc, const char *name) 501 { 502 struct ath_wiphy *aphy = get_wiphy(sc, name); 503 if (!aphy) 504 return -ENOENT; 505 return ath9k_wiphy_pause(aphy); 506 } 507 508 static int unpause_wiphy(struct ath_softc *sc, const char *name) 509 { 510 struct ath_wiphy *aphy = get_wiphy(sc, name); 511 if (!aphy) 512 return -ENOENT; 513 return ath9k_wiphy_unpause(aphy); 514 } 515 516 static int select_wiphy(struct ath_softc *sc, const char *name) 517 { 518 struct ath_wiphy *aphy = get_wiphy(sc, name); 519 if (!aphy) 520 return -ENOENT; 521 return ath9k_wiphy_select(aphy); 522 } 523 524 static int schedule_wiphy(struct ath_softc *sc, const char *msec) 525 { 526 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0)); 527 return 0; 528 } 529 530 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf, 531 size_t count, loff_t *ppos) 532 { 533 struct ath_softc *sc = file->private_data; 534 char buf[50]; 535 size_t len; 536 537 len = min(count, sizeof(buf) - 1); 538 if (copy_from_user(buf, user_buf, len)) 539 return -EFAULT; 540 buf[len] = '\0'; 541 if (len > 0 && buf[len - 1] == '\n') 542 buf[len - 1] = '\0'; 543 544 if (strncmp(buf, "add", 3) == 0) { 545 int res = ath9k_wiphy_add(sc); 546 if (res < 0) 547 return res; 548 } else if (strncmp(buf, "del=", 4) == 0) { 549 int res = del_wiphy(sc, buf + 4); 550 if (res < 0) 551 return res; 552 } else if (strncmp(buf, "pause=", 6) == 0) { 553 int res = pause_wiphy(sc, buf + 6); 554 if (res < 0) 555 return res; 556 } else if (strncmp(buf, "unpause=", 8) == 0) { 557 int res = unpause_wiphy(sc, buf + 8); 558 if (res < 0) 559 return res; 560 } else if (strncmp(buf, "select=", 7) == 0) { 561 int res = select_wiphy(sc, buf + 7); 562 if (res < 0) 563 return res; 564 } else if (strncmp(buf, "schedule=", 9) == 0) { 565 int res = schedule_wiphy(sc, buf + 9); 566 if (res < 0) 567 return res; 568 } else 569 return -EOPNOTSUPP; 570 571 return count; 572 } 573 574 static const struct file_operations fops_wiphy = { 575 .read = read_file_wiphy, 576 .write = write_file_wiphy, 577 .open = ath9k_debugfs_open, 578 .owner = THIS_MODULE, 579 .llseek = default_llseek, 580 }; 581 582 #define PR(str, elem) \ 583 do { \ 584 len += snprintf(buf + len, size - len, \ 585 "%s%13u%11u%10u%10u\n", str, \ 586 sc->debug.stats.txstats[WME_AC_BE].elem, \ 587 sc->debug.stats.txstats[WME_AC_BK].elem, \ 588 sc->debug.stats.txstats[WME_AC_VI].elem, \ 589 sc->debug.stats.txstats[WME_AC_VO].elem); \ 590 } while(0) 591 592 static ssize_t read_file_xmit(struct file *file, char __user *user_buf, 593 size_t count, loff_t *ppos) 594 { 595 struct ath_softc *sc = file->private_data; 596 char *buf; 597 unsigned int len = 0, size = 2048; 598 ssize_t retval = 0; 599 600 buf = kzalloc(size, GFP_KERNEL); 601 if (buf == NULL) 602 return -ENOMEM; 603 604 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO"); 605 606 PR("MPDUs Queued: ", queued); 607 PR("MPDUs Completed: ", completed); 608 PR("Aggregates: ", a_aggr); 609 PR("AMPDUs Queued: ", a_queued); 610 PR("AMPDUs Completed:", a_completed); 611 PR("AMPDUs Retried: ", a_retries); 612 PR("AMPDUs XRetried: ", a_xretries); 613 PR("FIFO Underrun: ", fifo_underrun); 614 PR("TXOP Exceeded: ", xtxop); 615 PR("TXTIMER Expiry: ", timer_exp); 616 PR("DESC CFG Error: ", desc_cfg_err); 617 PR("DATA Underrun: ", data_underrun); 618 PR("DELIM Underrun: ", delim_underrun); 619 PR("TX-Pkts-All: ", tx_pkts_all); 620 PR("TX-Bytes-All: ", tx_bytes_all); 621 622 if (len > size) 623 len = size; 624 625 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 626 kfree(buf); 627 628 return retval; 629 } 630 631 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf, 632 struct ath_tx_status *ts) 633 { 634 int qnum = skb_get_queue_mapping(bf->bf_mpdu); 635 636 TX_STAT_INC(qnum, tx_pkts_all); 637 sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len; 638 639 if (bf_isampdu(bf)) { 640 if (bf_isxretried(bf)) 641 TX_STAT_INC(qnum, a_xretries); 642 else 643 TX_STAT_INC(qnum, a_completed); 644 } else { 645 TX_STAT_INC(qnum, completed); 646 } 647 648 if (ts->ts_status & ATH9K_TXERR_FIFO) 649 TX_STAT_INC(qnum, fifo_underrun); 650 if (ts->ts_status & ATH9K_TXERR_XTXOP) 651 TX_STAT_INC(qnum, xtxop); 652 if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED) 653 TX_STAT_INC(qnum, timer_exp); 654 if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR) 655 TX_STAT_INC(qnum, desc_cfg_err); 656 if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN) 657 TX_STAT_INC(qnum, data_underrun); 658 if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN) 659 TX_STAT_INC(qnum, delim_underrun); 660 } 661 662 static const struct file_operations fops_xmit = { 663 .read = read_file_xmit, 664 .open = ath9k_debugfs_open, 665 .owner = THIS_MODULE, 666 .llseek = default_llseek, 667 }; 668 669 static ssize_t read_file_recv(struct file *file, char __user *user_buf, 670 size_t count, loff_t *ppos) 671 { 672 #define PHY_ERR(s, p) \ 673 len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \ 674 sc->debug.stats.rxstats.phy_err_stats[p]); 675 676 struct ath_softc *sc = file->private_data; 677 char *buf; 678 unsigned int len = 0, size = 1152; 679 ssize_t retval = 0; 680 681 buf = kzalloc(size, GFP_KERNEL); 682 if (buf == NULL) 683 return -ENOMEM; 684 685 len += snprintf(buf + len, size - len, 686 "%18s : %10u\n", "CRC ERR", 687 sc->debug.stats.rxstats.crc_err); 688 len += snprintf(buf + len, size - len, 689 "%18s : %10u\n", "DECRYPT CRC ERR", 690 sc->debug.stats.rxstats.decrypt_crc_err); 691 len += snprintf(buf + len, size - len, 692 "%18s : %10u\n", "PHY ERR", 693 sc->debug.stats.rxstats.phy_err); 694 len += snprintf(buf + len, size - len, 695 "%18s : %10u\n", "MIC ERR", 696 sc->debug.stats.rxstats.mic_err); 697 len += snprintf(buf + len, size - len, 698 "%18s : %10u\n", "PRE-DELIM CRC ERR", 699 sc->debug.stats.rxstats.pre_delim_crc_err); 700 len += snprintf(buf + len, size - len, 701 "%18s : %10u\n", "POST-DELIM CRC ERR", 702 sc->debug.stats.rxstats.post_delim_crc_err); 703 len += snprintf(buf + len, size - len, 704 "%18s : %10u\n", "DECRYPT BUSY ERR", 705 sc->debug.stats.rxstats.decrypt_busy_err); 706 707 PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN); 708 PHY_ERR("TIMING", ATH9K_PHYERR_TIMING); 709 PHY_ERR("PARITY", ATH9K_PHYERR_PARITY); 710 PHY_ERR("RATE", ATH9K_PHYERR_RATE); 711 PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH); 712 PHY_ERR("RADAR", ATH9K_PHYERR_RADAR); 713 PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE); 714 PHY_ERR("TOR", ATH9K_PHYERR_TOR); 715 PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING); 716 PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY); 717 PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL); 718 PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL); 719 PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP); 720 PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE); 721 PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART); 722 PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT); 723 PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING); 724 PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC); 725 PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL); 726 PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE); 727 PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART); 728 PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL); 729 PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP); 730 PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR); 731 PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL); 732 PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL); 733 734 len += snprintf(buf + len, size - len, 735 "%18s : %10u\n", "RX-Pkts-All", 736 sc->debug.stats.rxstats.rx_pkts_all); 737 len += snprintf(buf + len, size - len, 738 "%18s : %10u\n", "RX-Bytes-All", 739 sc->debug.stats.rxstats.rx_bytes_all); 740 741 if (len > size) 742 len = size; 743 744 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 745 kfree(buf); 746 747 return retval; 748 749 #undef PHY_ERR 750 } 751 752 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs) 753 { 754 #define RX_STAT_INC(c) sc->debug.stats.rxstats.c++ 755 #define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++ 756 757 u32 phyerr; 758 759 RX_STAT_INC(rx_pkts_all); 760 sc->debug.stats.rxstats.rx_bytes_all += rs->rs_datalen; 761 762 if (rs->rs_status & ATH9K_RXERR_CRC) 763 RX_STAT_INC(crc_err); 764 if (rs->rs_status & ATH9K_RXERR_DECRYPT) 765 RX_STAT_INC(decrypt_crc_err); 766 if (rs->rs_status & ATH9K_RXERR_MIC) 767 RX_STAT_INC(mic_err); 768 if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE) 769 RX_STAT_INC(pre_delim_crc_err); 770 if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST) 771 RX_STAT_INC(post_delim_crc_err); 772 if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY) 773 RX_STAT_INC(decrypt_busy_err); 774 775 if (rs->rs_status & ATH9K_RXERR_PHY) { 776 RX_STAT_INC(phy_err); 777 phyerr = rs->rs_phyerr & 0x24; 778 RX_PHY_ERR_INC(phyerr); 779 } 780 781 #undef RX_STAT_INC 782 #undef RX_PHY_ERR_INC 783 } 784 785 static const struct file_operations fops_recv = { 786 .read = read_file_recv, 787 .open = ath9k_debugfs_open, 788 .owner = THIS_MODULE, 789 .llseek = default_llseek, 790 }; 791 792 static ssize_t read_file_regidx(struct file *file, char __user *user_buf, 793 size_t count, loff_t *ppos) 794 { 795 struct ath_softc *sc = file->private_data; 796 char buf[32]; 797 unsigned int len; 798 799 len = sprintf(buf, "0x%08x\n", sc->debug.regidx); 800 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 801 } 802 803 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf, 804 size_t count, loff_t *ppos) 805 { 806 struct ath_softc *sc = file->private_data; 807 unsigned long regidx; 808 char buf[32]; 809 ssize_t len; 810 811 len = min(count, sizeof(buf) - 1); 812 if (copy_from_user(buf, user_buf, len)) 813 return -EFAULT; 814 815 buf[len] = '\0'; 816 if (strict_strtoul(buf, 0, ®idx)) 817 return -EINVAL; 818 819 sc->debug.regidx = regidx; 820 return count; 821 } 822 823 static const struct file_operations fops_regidx = { 824 .read = read_file_regidx, 825 .write = write_file_regidx, 826 .open = ath9k_debugfs_open, 827 .owner = THIS_MODULE, 828 .llseek = default_llseek, 829 }; 830 831 static ssize_t read_file_regval(struct file *file, char __user *user_buf, 832 size_t count, loff_t *ppos) 833 { 834 struct ath_softc *sc = file->private_data; 835 struct ath_hw *ah = sc->sc_ah; 836 char buf[32]; 837 unsigned int len; 838 u32 regval; 839 840 regval = REG_READ_D(ah, sc->debug.regidx); 841 len = sprintf(buf, "0x%08x\n", regval); 842 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 843 } 844 845 static ssize_t write_file_regval(struct file *file, const char __user *user_buf, 846 size_t count, loff_t *ppos) 847 { 848 struct ath_softc *sc = file->private_data; 849 struct ath_hw *ah = sc->sc_ah; 850 unsigned long regval; 851 char buf[32]; 852 ssize_t len; 853 854 len = min(count, sizeof(buf) - 1); 855 if (copy_from_user(buf, user_buf, len)) 856 return -EFAULT; 857 858 buf[len] = '\0'; 859 if (strict_strtoul(buf, 0, ®val)) 860 return -EINVAL; 861 862 REG_WRITE_D(ah, sc->debug.regidx, regval); 863 return count; 864 } 865 866 static const struct file_operations fops_regval = { 867 .read = read_file_regval, 868 .write = write_file_regval, 869 .open = ath9k_debugfs_open, 870 .owner = THIS_MODULE, 871 .llseek = default_llseek, 872 }; 873 874 int ath9k_init_debug(struct ath_hw *ah) 875 { 876 struct ath_common *common = ath9k_hw_common(ah); 877 struct ath_softc *sc = (struct ath_softc *) common->priv; 878 879 sc->debug.debugfs_phy = debugfs_create_dir("ath9k", 880 sc->hw->wiphy->debugfsdir); 881 if (!sc->debug.debugfs_phy) 882 return -ENOMEM; 883 884 #ifdef CONFIG_ATH_DEBUG 885 if (!debugfs_create_file("debug", S_IRUSR | S_IWUSR, 886 sc->debug.debugfs_phy, sc, &fops_debug)) 887 goto err; 888 #endif 889 890 if (!debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, 891 sc, &fops_dma)) 892 goto err; 893 894 if (!debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, 895 sc, &fops_interrupt)) 896 goto err; 897 898 if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR, 899 sc->debug.debugfs_phy, sc, &fops_wiphy)) 900 goto err; 901 902 if (!debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, 903 sc, &fops_xmit)) 904 goto err; 905 906 if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy, 907 sc, &fops_recv)) 908 goto err; 909 910 if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR, 911 sc->debug.debugfs_phy, sc, &fops_rx_chainmask)) 912 goto err; 913 914 if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR, 915 sc->debug.debugfs_phy, sc, &fops_tx_chainmask)) 916 goto err; 917 918 if (!debugfs_create_file("regidx", S_IRUSR | S_IWUSR, 919 sc->debug.debugfs_phy, sc, &fops_regidx)) 920 goto err; 921 922 if (!debugfs_create_file("regval", S_IRUSR | S_IWUSR, 923 sc->debug.debugfs_phy, sc, &fops_regval)) 924 goto err; 925 926 if (!debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR, 927 sc->debug.debugfs_phy, &ah->config.cwm_ignore_extcca)) 928 goto err; 929 930 sc->debug.regidx = 0; 931 return 0; 932 err: 933 debugfs_remove_recursive(sc->debug.debugfs_phy); 934 sc->debug.debugfs_phy = NULL; 935 return -ENOMEM; 936 } 937