1 /* 2 * Copyright (c) 2004-2011 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 "core.h" 18 19 #include <linux/circ_buf.h> 20 #include <linux/fs.h> 21 #include <linux/vmalloc.h> 22 #include <linux/export.h> 23 24 #include "debug.h" 25 #include "target.h" 26 27 struct ath6kl_fwlog_slot { 28 __le32 timestamp; 29 __le32 length; 30 31 /* max ATH6KL_FWLOG_PAYLOAD_SIZE bytes */ 32 u8 payload[0]; 33 }; 34 35 #define ATH6KL_FWLOG_SIZE 32768 36 #define ATH6KL_FWLOG_SLOT_SIZE (sizeof(struct ath6kl_fwlog_slot) + \ 37 ATH6KL_FWLOG_PAYLOAD_SIZE) 38 #define ATH6KL_FWLOG_VALID_MASK 0x1ffff 39 40 int ath6kl_printk(const char *level, const char *fmt, ...) 41 { 42 struct va_format vaf; 43 va_list args; 44 int rtn; 45 46 va_start(args, fmt); 47 48 vaf.fmt = fmt; 49 vaf.va = &args; 50 51 rtn = printk("%sath6kl: %pV", level, &vaf); 52 53 va_end(args); 54 55 return rtn; 56 } 57 58 #ifdef CONFIG_ATH6KL_DEBUG 59 60 #define REG_OUTPUT_LEN_PER_LINE 25 61 #define REGTYPE_STR_LEN 100 62 63 struct ath6kl_diag_reg_info { 64 u32 reg_start; 65 u32 reg_end; 66 const char *reg_info; 67 }; 68 69 static const struct ath6kl_diag_reg_info diag_reg[] = { 70 { 0x20000, 0x200fc, "General DMA and Rx registers" }, 71 { 0x28000, 0x28900, "MAC PCU register & keycache" }, 72 { 0x20800, 0x20a40, "QCU" }, 73 { 0x21000, 0x212f0, "DCU" }, 74 { 0x4000, 0x42e4, "RTC" }, 75 { 0x540000, 0x540000 + (256 * 1024), "RAM" }, 76 { 0x29800, 0x2B210, "Base Band" }, 77 { 0x1C000, 0x1C748, "Analog" }, 78 }; 79 80 void ath6kl_dump_registers(struct ath6kl_device *dev, 81 struct ath6kl_irq_proc_registers *irq_proc_reg, 82 struct ath6kl_irq_enable_reg *irq_enable_reg) 83 { 84 85 ath6kl_dbg(ATH6KL_DBG_ANY, ("<------- Register Table -------->\n")); 86 87 if (irq_proc_reg != NULL) { 88 ath6kl_dbg(ATH6KL_DBG_ANY, 89 "Host Int status: 0x%x\n", 90 irq_proc_reg->host_int_status); 91 ath6kl_dbg(ATH6KL_DBG_ANY, 92 "CPU Int status: 0x%x\n", 93 irq_proc_reg->cpu_int_status); 94 ath6kl_dbg(ATH6KL_DBG_ANY, 95 "Error Int status: 0x%x\n", 96 irq_proc_reg->error_int_status); 97 ath6kl_dbg(ATH6KL_DBG_ANY, 98 "Counter Int status: 0x%x\n", 99 irq_proc_reg->counter_int_status); 100 ath6kl_dbg(ATH6KL_DBG_ANY, 101 "Mbox Frame: 0x%x\n", 102 irq_proc_reg->mbox_frame); 103 ath6kl_dbg(ATH6KL_DBG_ANY, 104 "Rx Lookahead Valid: 0x%x\n", 105 irq_proc_reg->rx_lkahd_valid); 106 ath6kl_dbg(ATH6KL_DBG_ANY, 107 "Rx Lookahead 0: 0x%x\n", 108 irq_proc_reg->rx_lkahd[0]); 109 ath6kl_dbg(ATH6KL_DBG_ANY, 110 "Rx Lookahead 1: 0x%x\n", 111 irq_proc_reg->rx_lkahd[1]); 112 113 if (dev->ar->mbox_info.gmbox_addr != 0) { 114 /* 115 * If the target supports GMBOX hardware, dump some 116 * additional state. 117 */ 118 ath6kl_dbg(ATH6KL_DBG_ANY, 119 "GMBOX Host Int status 2: 0x%x\n", 120 irq_proc_reg->host_int_status2); 121 ath6kl_dbg(ATH6KL_DBG_ANY, 122 "GMBOX RX Avail: 0x%x\n", 123 irq_proc_reg->gmbox_rx_avail); 124 ath6kl_dbg(ATH6KL_DBG_ANY, 125 "GMBOX lookahead alias 0: 0x%x\n", 126 irq_proc_reg->rx_gmbox_lkahd_alias[0]); 127 ath6kl_dbg(ATH6KL_DBG_ANY, 128 "GMBOX lookahead alias 1: 0x%x\n", 129 irq_proc_reg->rx_gmbox_lkahd_alias[1]); 130 } 131 132 } 133 134 if (irq_enable_reg != NULL) { 135 ath6kl_dbg(ATH6KL_DBG_ANY, 136 "Int status Enable: 0x%x\n", 137 irq_enable_reg->int_status_en); 138 ath6kl_dbg(ATH6KL_DBG_ANY, "Counter Int status Enable: 0x%x\n", 139 irq_enable_reg->cntr_int_status_en); 140 } 141 ath6kl_dbg(ATH6KL_DBG_ANY, "<------------------------------->\n"); 142 } 143 144 static void dump_cred_dist(struct htc_endpoint_credit_dist *ep_dist) 145 { 146 ath6kl_dbg(ATH6KL_DBG_ANY, 147 "--- endpoint: %d svc_id: 0x%X ---\n", 148 ep_dist->endpoint, ep_dist->svc_id); 149 ath6kl_dbg(ATH6KL_DBG_ANY, " dist_flags : 0x%X\n", 150 ep_dist->dist_flags); 151 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_norm : %d\n", 152 ep_dist->cred_norm); 153 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_min : %d\n", 154 ep_dist->cred_min); 155 ath6kl_dbg(ATH6KL_DBG_ANY, " credits : %d\n", 156 ep_dist->credits); 157 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_assngd : %d\n", 158 ep_dist->cred_assngd); 159 ath6kl_dbg(ATH6KL_DBG_ANY, " seek_cred : %d\n", 160 ep_dist->seek_cred); 161 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_sz : %d\n", 162 ep_dist->cred_sz); 163 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_per_msg : %d\n", 164 ep_dist->cred_per_msg); 165 ath6kl_dbg(ATH6KL_DBG_ANY, " cred_to_dist : %d\n", 166 ep_dist->cred_to_dist); 167 ath6kl_dbg(ATH6KL_DBG_ANY, " txq_depth : %d\n", 168 get_queue_depth(&((struct htc_endpoint *) 169 ep_dist->htc_rsvd)->txq)); 170 ath6kl_dbg(ATH6KL_DBG_ANY, 171 "----------------------------------\n"); 172 } 173 174 void dump_cred_dist_stats(struct htc_target *target) 175 { 176 struct htc_endpoint_credit_dist *ep_list; 177 178 if (!AR_DBG_LVL_CHECK(ATH6KL_DBG_TRC)) 179 return; 180 181 list_for_each_entry(ep_list, &target->cred_dist_list, list) 182 dump_cred_dist(ep_list); 183 184 ath6kl_dbg(ATH6KL_DBG_HTC_SEND, "ctxt:%p dist:%p\n", 185 target->cred_dist_cntxt, NULL); 186 ath6kl_dbg(ATH6KL_DBG_TRC, "credit distribution, total : %d, free : %d\n", 187 target->cred_dist_cntxt->total_avail_credits, 188 target->cred_dist_cntxt->cur_free_credits); 189 } 190 191 static int ath6kl_debugfs_open(struct inode *inode, struct file *file) 192 { 193 file->private_data = inode->i_private; 194 return 0; 195 } 196 197 void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war) 198 { 199 switch (war) { 200 case ATH6KL_WAR_INVALID_RATE: 201 ar->debug.war_stats.invalid_rate++; 202 break; 203 } 204 } 205 206 static ssize_t read_file_war_stats(struct file *file, char __user *user_buf, 207 size_t count, loff_t *ppos) 208 { 209 struct ath6kl *ar = file->private_data; 210 char *buf; 211 unsigned int len = 0, buf_len = 1500; 212 ssize_t ret_cnt; 213 214 buf = kzalloc(buf_len, GFP_KERNEL); 215 if (!buf) 216 return -ENOMEM; 217 218 len += scnprintf(buf + len, buf_len - len, "\n"); 219 len += scnprintf(buf + len, buf_len - len, "%25s\n", 220 "Workaround stats"); 221 len += scnprintf(buf + len, buf_len - len, "%25s\n\n", 222 "================="); 223 len += scnprintf(buf + len, buf_len - len, "%20s %10u\n", 224 "Invalid rates", ar->debug.war_stats.invalid_rate); 225 226 if (WARN_ON(len > buf_len)) 227 len = buf_len; 228 229 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 230 231 kfree(buf); 232 return ret_cnt; 233 } 234 235 static const struct file_operations fops_war_stats = { 236 .read = read_file_war_stats, 237 .open = ath6kl_debugfs_open, 238 .owner = THIS_MODULE, 239 .llseek = default_llseek, 240 }; 241 242 static void ath6kl_debug_fwlog_add(struct ath6kl *ar, const void *buf, 243 size_t buf_len) 244 { 245 struct circ_buf *fwlog = &ar->debug.fwlog_buf; 246 size_t space; 247 int i; 248 249 /* entries must all be equal size */ 250 if (WARN_ON(buf_len != ATH6KL_FWLOG_SLOT_SIZE)) 251 return; 252 253 space = CIRC_SPACE(fwlog->head, fwlog->tail, ATH6KL_FWLOG_SIZE); 254 if (space < buf_len) 255 /* discard oldest slot */ 256 fwlog->tail = (fwlog->tail + ATH6KL_FWLOG_SLOT_SIZE) & 257 (ATH6KL_FWLOG_SIZE - 1); 258 259 for (i = 0; i < buf_len; i += space) { 260 space = CIRC_SPACE_TO_END(fwlog->head, fwlog->tail, 261 ATH6KL_FWLOG_SIZE); 262 263 if ((size_t) space > buf_len - i) 264 space = buf_len - i; 265 266 memcpy(&fwlog->buf[fwlog->head], buf, space); 267 fwlog->head = (fwlog->head + space) & (ATH6KL_FWLOG_SIZE - 1); 268 } 269 270 } 271 272 void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len) 273 { 274 struct ath6kl_fwlog_slot *slot = ar->debug.fwlog_tmp; 275 size_t slot_len; 276 277 if (WARN_ON(len > ATH6KL_FWLOG_PAYLOAD_SIZE)) 278 return; 279 280 spin_lock_bh(&ar->debug.fwlog_lock); 281 282 slot->timestamp = cpu_to_le32(jiffies); 283 slot->length = cpu_to_le32(len); 284 memcpy(slot->payload, buf, len); 285 286 slot_len = sizeof(*slot) + len; 287 288 if (slot_len < ATH6KL_FWLOG_SLOT_SIZE) 289 memset(slot->payload + len, 0, 290 ATH6KL_FWLOG_SLOT_SIZE - slot_len); 291 292 ath6kl_debug_fwlog_add(ar, slot, ATH6KL_FWLOG_SLOT_SIZE); 293 294 spin_unlock_bh(&ar->debug.fwlog_lock); 295 } 296 297 static bool ath6kl_debug_fwlog_empty(struct ath6kl *ar) 298 { 299 return CIRC_CNT(ar->debug.fwlog_buf.head, 300 ar->debug.fwlog_buf.tail, 301 ATH6KL_FWLOG_SLOT_SIZE) == 0; 302 } 303 304 static ssize_t ath6kl_fwlog_read(struct file *file, char __user *user_buf, 305 size_t count, loff_t *ppos) 306 { 307 struct ath6kl *ar = file->private_data; 308 struct circ_buf *fwlog = &ar->debug.fwlog_buf; 309 size_t len = 0, buf_len = count; 310 ssize_t ret_cnt; 311 char *buf; 312 int ccnt; 313 314 buf = vmalloc(buf_len); 315 if (!buf) 316 return -ENOMEM; 317 318 /* read undelivered logs from firmware */ 319 ath6kl_read_fwlogs(ar); 320 321 spin_lock_bh(&ar->debug.fwlog_lock); 322 323 while (len < buf_len && !ath6kl_debug_fwlog_empty(ar)) { 324 ccnt = CIRC_CNT_TO_END(fwlog->head, fwlog->tail, 325 ATH6KL_FWLOG_SIZE); 326 327 if ((size_t) ccnt > buf_len - len) 328 ccnt = buf_len - len; 329 330 memcpy(buf + len, &fwlog->buf[fwlog->tail], ccnt); 331 len += ccnt; 332 333 fwlog->tail = (fwlog->tail + ccnt) & 334 (ATH6KL_FWLOG_SIZE - 1); 335 } 336 337 spin_unlock_bh(&ar->debug.fwlog_lock); 338 339 if (WARN_ON(len > buf_len)) 340 len = buf_len; 341 342 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 343 344 vfree(buf); 345 346 return ret_cnt; 347 } 348 349 static const struct file_operations fops_fwlog = { 350 .open = ath6kl_debugfs_open, 351 .read = ath6kl_fwlog_read, 352 .owner = THIS_MODULE, 353 .llseek = default_llseek, 354 }; 355 356 static ssize_t ath6kl_fwlog_mask_read(struct file *file, char __user *user_buf, 357 size_t count, loff_t *ppos) 358 { 359 struct ath6kl *ar = file->private_data; 360 char buf[16]; 361 int len; 362 363 len = snprintf(buf, sizeof(buf), "0x%x\n", ar->debug.fwlog_mask); 364 365 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 366 } 367 368 static ssize_t ath6kl_fwlog_mask_write(struct file *file, 369 const char __user *user_buf, 370 size_t count, loff_t *ppos) 371 { 372 struct ath6kl *ar = file->private_data; 373 int ret; 374 375 ret = kstrtou32_from_user(user_buf, count, 0, &ar->debug.fwlog_mask); 376 if (ret) 377 return ret; 378 379 ret = ath6kl_wmi_config_debug_module_cmd(ar->wmi, 380 ATH6KL_FWLOG_VALID_MASK, 381 ar->debug.fwlog_mask); 382 if (ret) 383 return ret; 384 385 return count; 386 } 387 388 static const struct file_operations fops_fwlog_mask = { 389 .open = ath6kl_debugfs_open, 390 .read = ath6kl_fwlog_mask_read, 391 .write = ath6kl_fwlog_mask_write, 392 .owner = THIS_MODULE, 393 .llseek = default_llseek, 394 }; 395 396 static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf, 397 size_t count, loff_t *ppos) 398 { 399 struct ath6kl *ar = file->private_data; 400 struct target_stats *tgt_stats = &ar->target_stats; 401 char *buf; 402 unsigned int len = 0, buf_len = 1500; 403 int i; 404 long left; 405 ssize_t ret_cnt; 406 407 buf = kzalloc(buf_len, GFP_KERNEL); 408 if (!buf) 409 return -ENOMEM; 410 411 if (down_interruptible(&ar->sem)) { 412 kfree(buf); 413 return -EBUSY; 414 } 415 416 set_bit(STATS_UPDATE_PEND, &ar->flag); 417 418 if (ath6kl_wmi_get_stats_cmd(ar->wmi)) { 419 up(&ar->sem); 420 kfree(buf); 421 return -EIO; 422 } 423 424 left = wait_event_interruptible_timeout(ar->event_wq, 425 !test_bit(STATS_UPDATE_PEND, 426 &ar->flag), WMI_TIMEOUT); 427 428 up(&ar->sem); 429 430 if (left <= 0) { 431 kfree(buf); 432 return -ETIMEDOUT; 433 } 434 435 len += scnprintf(buf + len, buf_len - len, "\n"); 436 len += scnprintf(buf + len, buf_len - len, "%25s\n", 437 "Target Tx stats"); 438 len += scnprintf(buf + len, buf_len - len, "%25s\n\n", 439 "================="); 440 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 441 "Ucast packets", tgt_stats->tx_ucast_pkt); 442 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 443 "Bcast packets", tgt_stats->tx_bcast_pkt); 444 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 445 "Ucast byte", tgt_stats->tx_ucast_byte); 446 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 447 "Bcast byte", tgt_stats->tx_bcast_byte); 448 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 449 "Rts success cnt", tgt_stats->tx_rts_success_cnt); 450 for (i = 0; i < 4; i++) 451 len += scnprintf(buf + len, buf_len - len, 452 "%18s %d %10llu\n", "PER on ac", 453 i, tgt_stats->tx_pkt_per_ac[i]); 454 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 455 "Error", tgt_stats->tx_err); 456 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 457 "Fail count", tgt_stats->tx_fail_cnt); 458 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 459 "Retry count", tgt_stats->tx_retry_cnt); 460 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 461 "Multi retry cnt", tgt_stats->tx_mult_retry_cnt); 462 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 463 "Rts fail cnt", tgt_stats->tx_rts_fail_cnt); 464 len += scnprintf(buf + len, buf_len - len, "%25s %10llu\n\n", 465 "TKIP counter measure used", 466 tgt_stats->tkip_cnter_measures_invoked); 467 468 len += scnprintf(buf + len, buf_len - len, "%25s\n", 469 "Target Rx stats"); 470 len += scnprintf(buf + len, buf_len - len, "%25s\n", 471 "================="); 472 473 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 474 "Ucast packets", tgt_stats->rx_ucast_pkt); 475 len += scnprintf(buf + len, buf_len - len, "%20s %10d\n", 476 "Ucast Rate", tgt_stats->rx_ucast_rate); 477 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 478 "Bcast packets", tgt_stats->rx_bcast_pkt); 479 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 480 "Ucast byte", tgt_stats->rx_ucast_byte); 481 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 482 "Bcast byte", tgt_stats->rx_bcast_byte); 483 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 484 "Fragmented pkt", tgt_stats->rx_frgment_pkt); 485 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 486 "Error", tgt_stats->rx_err); 487 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 488 "CRC Err", tgt_stats->rx_crc_err); 489 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 490 "Key chache miss", tgt_stats->rx_key_cache_miss); 491 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 492 "Decrypt Err", tgt_stats->rx_decrypt_err); 493 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 494 "Duplicate frame", tgt_stats->rx_dupl_frame); 495 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 496 "Tkip Mic failure", tgt_stats->tkip_local_mic_fail); 497 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 498 "TKIP format err", tgt_stats->tkip_fmt_err); 499 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 500 "CCMP format Err", tgt_stats->ccmp_fmt_err); 501 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n\n", 502 "CCMP Replay Err", tgt_stats->ccmp_replays); 503 504 len += scnprintf(buf + len, buf_len - len, "%25s\n", 505 "Misc Target stats"); 506 len += scnprintf(buf + len, buf_len - len, "%25s\n", 507 "================="); 508 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 509 "Beacon Miss count", tgt_stats->cs_bmiss_cnt); 510 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 511 "Num Connects", tgt_stats->cs_connect_cnt); 512 len += scnprintf(buf + len, buf_len - len, "%20s %10llu\n", 513 "Num disconnects", tgt_stats->cs_discon_cnt); 514 len += scnprintf(buf + len, buf_len - len, "%20s %10d\n", 515 "Beacon avg rssi", tgt_stats->cs_ave_beacon_rssi); 516 517 if (len > buf_len) 518 len = buf_len; 519 520 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 521 522 kfree(buf); 523 return ret_cnt; 524 } 525 526 static const struct file_operations fops_tgt_stats = { 527 .read = read_file_tgt_stats, 528 .open = ath6kl_debugfs_open, 529 .owner = THIS_MODULE, 530 .llseek = default_llseek, 531 }; 532 533 #define print_credit_info(fmt_str, ep_list_field) \ 534 (len += scnprintf(buf + len, buf_len - len, fmt_str, \ 535 ep_list->ep_list_field)) 536 #define CREDIT_INFO_DISPLAY_STRING_LEN 200 537 #define CREDIT_INFO_LEN 128 538 539 static ssize_t read_file_credit_dist_stats(struct file *file, 540 char __user *user_buf, 541 size_t count, loff_t *ppos) 542 { 543 struct ath6kl *ar = file->private_data; 544 struct htc_target *target = ar->htc_target; 545 struct htc_endpoint_credit_dist *ep_list; 546 char *buf; 547 unsigned int buf_len, len = 0; 548 ssize_t ret_cnt; 549 550 buf_len = CREDIT_INFO_DISPLAY_STRING_LEN + 551 get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN; 552 buf = kzalloc(buf_len, GFP_KERNEL); 553 if (!buf) 554 return -ENOMEM; 555 556 len += scnprintf(buf + len, buf_len - len, "%25s%5d\n", 557 "Total Avail Credits: ", 558 target->cred_dist_cntxt->total_avail_credits); 559 len += scnprintf(buf + len, buf_len - len, "%25s%5d\n", 560 "Free credits :", 561 target->cred_dist_cntxt->cur_free_credits); 562 563 len += scnprintf(buf + len, buf_len - len, 564 " Epid Flags Cred_norm Cred_min Credits Cred_assngd" 565 " Seek_cred Cred_sz Cred_per_msg Cred_to_dist" 566 " qdepth\n"); 567 568 list_for_each_entry(ep_list, &target->cred_dist_list, list) { 569 print_credit_info(" %2d", endpoint); 570 print_credit_info("%10x", dist_flags); 571 print_credit_info("%8d", cred_norm); 572 print_credit_info("%9d", cred_min); 573 print_credit_info("%9d", credits); 574 print_credit_info("%10d", cred_assngd); 575 print_credit_info("%13d", seek_cred); 576 print_credit_info("%12d", cred_sz); 577 print_credit_info("%9d", cred_per_msg); 578 print_credit_info("%14d", cred_to_dist); 579 len += scnprintf(buf + len, buf_len - len, "%12d\n", 580 get_queue_depth(&((struct htc_endpoint *) 581 ep_list->htc_rsvd)->txq)); 582 } 583 584 if (len > buf_len) 585 len = buf_len; 586 587 ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); 588 kfree(buf); 589 return ret_cnt; 590 } 591 592 static const struct file_operations fops_credit_dist_stats = { 593 .read = read_file_credit_dist_stats, 594 .open = ath6kl_debugfs_open, 595 .owner = THIS_MODULE, 596 .llseek = default_llseek, 597 }; 598 599 static unsigned long ath6kl_get_num_reg(void) 600 { 601 int i; 602 unsigned long n_reg = 0; 603 604 for (i = 0; i < ARRAY_SIZE(diag_reg); i++) 605 n_reg = n_reg + 606 (diag_reg[i].reg_end - diag_reg[i].reg_start) / 4 + 1; 607 608 return n_reg; 609 } 610 611 static bool ath6kl_dbg_is_diag_reg_valid(u32 reg_addr) 612 { 613 int i; 614 615 for (i = 0; i < ARRAY_SIZE(diag_reg); i++) { 616 if (reg_addr >= diag_reg[i].reg_start && 617 reg_addr <= diag_reg[i].reg_end) 618 return true; 619 } 620 621 return false; 622 } 623 624 static ssize_t ath6kl_regread_read(struct file *file, char __user *user_buf, 625 size_t count, loff_t *ppos) 626 { 627 struct ath6kl *ar = file->private_data; 628 u8 buf[50]; 629 unsigned int len = 0; 630 631 if (ar->debug.dbgfs_diag_reg) 632 len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n", 633 ar->debug.dbgfs_diag_reg); 634 else 635 len += scnprintf(buf + len, sizeof(buf) - len, 636 "All diag registers\n"); 637 638 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 639 } 640 641 static ssize_t ath6kl_regread_write(struct file *file, 642 const char __user *user_buf, 643 size_t count, loff_t *ppos) 644 { 645 struct ath6kl *ar = file->private_data; 646 u8 buf[50]; 647 unsigned int len; 648 unsigned long reg_addr; 649 650 len = min(count, sizeof(buf) - 1); 651 if (copy_from_user(buf, user_buf, len)) 652 return -EFAULT; 653 654 buf[len] = '\0'; 655 656 if (strict_strtoul(buf, 0, ®_addr)) 657 return -EINVAL; 658 659 if ((reg_addr % 4) != 0) 660 return -EINVAL; 661 662 if (reg_addr && !ath6kl_dbg_is_diag_reg_valid(reg_addr)) 663 return -EINVAL; 664 665 ar->debug.dbgfs_diag_reg = reg_addr; 666 667 return count; 668 } 669 670 static const struct file_operations fops_diag_reg_read = { 671 .read = ath6kl_regread_read, 672 .write = ath6kl_regread_write, 673 .open = ath6kl_debugfs_open, 674 .owner = THIS_MODULE, 675 .llseek = default_llseek, 676 }; 677 678 static int ath6kl_regdump_open(struct inode *inode, struct file *file) 679 { 680 struct ath6kl *ar = inode->i_private; 681 u8 *buf; 682 unsigned long int reg_len; 683 unsigned int len = 0, n_reg; 684 u32 addr; 685 __le32 reg_val; 686 int i, status; 687 688 /* Dump all the registers if no register is specified */ 689 if (!ar->debug.dbgfs_diag_reg) 690 n_reg = ath6kl_get_num_reg(); 691 else 692 n_reg = 1; 693 694 reg_len = n_reg * REG_OUTPUT_LEN_PER_LINE; 695 if (n_reg > 1) 696 reg_len += REGTYPE_STR_LEN; 697 698 buf = vmalloc(reg_len); 699 if (!buf) 700 return -ENOMEM; 701 702 if (n_reg == 1) { 703 addr = ar->debug.dbgfs_diag_reg; 704 705 status = ath6kl_diag_read32(ar, 706 TARG_VTOP(ar->target_type, addr), 707 (u32 *)®_val); 708 if (status) 709 goto fail_reg_read; 710 711 len += scnprintf(buf + len, reg_len - len, 712 "0x%06x 0x%08x\n", addr, le32_to_cpu(reg_val)); 713 goto done; 714 } 715 716 for (i = 0; i < ARRAY_SIZE(diag_reg); i++) { 717 len += scnprintf(buf + len, reg_len - len, 718 "%s\n", diag_reg[i].reg_info); 719 for (addr = diag_reg[i].reg_start; 720 addr <= diag_reg[i].reg_end; addr += 4) { 721 status = ath6kl_diag_read32(ar, 722 TARG_VTOP(ar->target_type, addr), 723 (u32 *)®_val); 724 if (status) 725 goto fail_reg_read; 726 727 len += scnprintf(buf + len, reg_len - len, 728 "0x%06x 0x%08x\n", 729 addr, le32_to_cpu(reg_val)); 730 } 731 } 732 733 done: 734 file->private_data = buf; 735 return 0; 736 737 fail_reg_read: 738 ath6kl_warn("Unable to read memory:%u\n", addr); 739 vfree(buf); 740 return -EIO; 741 } 742 743 static ssize_t ath6kl_regdump_read(struct file *file, char __user *user_buf, 744 size_t count, loff_t *ppos) 745 { 746 u8 *buf = file->private_data; 747 return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); 748 } 749 750 static int ath6kl_regdump_release(struct inode *inode, struct file *file) 751 { 752 vfree(file->private_data); 753 return 0; 754 } 755 756 static const struct file_operations fops_reg_dump = { 757 .open = ath6kl_regdump_open, 758 .read = ath6kl_regdump_read, 759 .release = ath6kl_regdump_release, 760 .owner = THIS_MODULE, 761 .llseek = default_llseek, 762 }; 763 764 static ssize_t ath6kl_lrssi_roam_write(struct file *file, 765 const char __user *user_buf, 766 size_t count, loff_t *ppos) 767 { 768 struct ath6kl *ar = file->private_data; 769 unsigned long lrssi_roam_threshold; 770 char buf[32]; 771 ssize_t len; 772 773 len = min(count, sizeof(buf) - 1); 774 if (copy_from_user(buf, user_buf, len)) 775 return -EFAULT; 776 777 buf[len] = '\0'; 778 if (strict_strtoul(buf, 0, &lrssi_roam_threshold)) 779 return -EINVAL; 780 781 ar->lrssi_roam_threshold = lrssi_roam_threshold; 782 783 ath6kl_wmi_set_roam_lrssi_cmd(ar->wmi, ar->lrssi_roam_threshold); 784 785 return count; 786 } 787 788 static ssize_t ath6kl_lrssi_roam_read(struct file *file, 789 char __user *user_buf, 790 size_t count, loff_t *ppos) 791 { 792 struct ath6kl *ar = file->private_data; 793 char buf[32]; 794 unsigned int len; 795 796 len = snprintf(buf, sizeof(buf), "%u\n", ar->lrssi_roam_threshold); 797 798 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 799 } 800 801 static const struct file_operations fops_lrssi_roam_threshold = { 802 .read = ath6kl_lrssi_roam_read, 803 .write = ath6kl_lrssi_roam_write, 804 .open = ath6kl_debugfs_open, 805 .owner = THIS_MODULE, 806 .llseek = default_llseek, 807 }; 808 809 static ssize_t ath6kl_regwrite_read(struct file *file, 810 char __user *user_buf, 811 size_t count, loff_t *ppos) 812 { 813 struct ath6kl *ar = file->private_data; 814 u8 buf[32]; 815 unsigned int len = 0; 816 817 len = scnprintf(buf, sizeof(buf), "Addr: 0x%x Val: 0x%x\n", 818 ar->debug.diag_reg_addr_wr, ar->debug.diag_reg_val_wr); 819 820 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 821 } 822 823 static ssize_t ath6kl_regwrite_write(struct file *file, 824 const char __user *user_buf, 825 size_t count, loff_t *ppos) 826 { 827 struct ath6kl *ar = file->private_data; 828 char buf[32]; 829 char *sptr, *token; 830 unsigned int len = 0; 831 u32 reg_addr, reg_val; 832 833 len = min(count, sizeof(buf) - 1); 834 if (copy_from_user(buf, user_buf, len)) 835 return -EFAULT; 836 837 buf[len] = '\0'; 838 sptr = buf; 839 840 token = strsep(&sptr, "="); 841 if (!token) 842 return -EINVAL; 843 844 if (kstrtou32(token, 0, ®_addr)) 845 return -EINVAL; 846 847 if (!ath6kl_dbg_is_diag_reg_valid(reg_addr)) 848 return -EINVAL; 849 850 if (kstrtou32(sptr, 0, ®_val)) 851 return -EINVAL; 852 853 ar->debug.diag_reg_addr_wr = reg_addr; 854 ar->debug.diag_reg_val_wr = reg_val; 855 856 if (ath6kl_diag_write32(ar, ar->debug.diag_reg_addr_wr, 857 cpu_to_le32(ar->debug.diag_reg_val_wr))) 858 return -EIO; 859 860 return count; 861 } 862 863 static const struct file_operations fops_diag_reg_write = { 864 .read = ath6kl_regwrite_read, 865 .write = ath6kl_regwrite_write, 866 .open = ath6kl_debugfs_open, 867 .owner = THIS_MODULE, 868 .llseek = default_llseek, 869 }; 870 871 int ath6kl_debug_init(struct ath6kl *ar) 872 { 873 ar->debug.fwlog_buf.buf = vmalloc(ATH6KL_FWLOG_SIZE); 874 if (ar->debug.fwlog_buf.buf == NULL) 875 return -ENOMEM; 876 877 ar->debug.fwlog_tmp = kmalloc(ATH6KL_FWLOG_SLOT_SIZE, GFP_KERNEL); 878 if (ar->debug.fwlog_tmp == NULL) { 879 vfree(ar->debug.fwlog_buf.buf); 880 return -ENOMEM; 881 } 882 883 spin_lock_init(&ar->debug.fwlog_lock); 884 885 /* 886 * Actually we are lying here but don't know how to read the mask 887 * value from the firmware. 888 */ 889 ar->debug.fwlog_mask = 0; 890 891 ar->debugfs_phy = debugfs_create_dir("ath6kl", 892 ar->wdev->wiphy->debugfsdir); 893 if (!ar->debugfs_phy) { 894 vfree(ar->debug.fwlog_buf.buf); 895 kfree(ar->debug.fwlog_tmp); 896 return -ENOMEM; 897 } 898 899 debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar, 900 &fops_tgt_stats); 901 902 debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar, 903 &fops_credit_dist_stats); 904 905 debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar, 906 &fops_fwlog); 907 908 debugfs_create_file("fwlog_mask", S_IRUSR | S_IWUSR, ar->debugfs_phy, 909 ar, &fops_fwlog_mask); 910 911 debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR, ar->debugfs_phy, ar, 912 &fops_diag_reg_read); 913 914 debugfs_create_file("reg_dump", S_IRUSR, ar->debugfs_phy, ar, 915 &fops_reg_dump); 916 917 debugfs_create_file("lrssi_roam_threshold", S_IRUSR | S_IWUSR, 918 ar->debugfs_phy, ar, &fops_lrssi_roam_threshold); 919 920 debugfs_create_file("reg_write", S_IRUSR | S_IWUSR, 921 ar->debugfs_phy, ar, &fops_diag_reg_write); 922 923 debugfs_create_file("war_stats", S_IRUSR, ar->debugfs_phy, ar, 924 &fops_war_stats); 925 926 return 0; 927 } 928 929 void ath6kl_debug_cleanup(struct ath6kl *ar) 930 { 931 vfree(ar->debug.fwlog_buf.buf); 932 kfree(ar->debug.fwlog_tmp); 933 } 934 935 #endif 936