main.c revision 334234b51453fe5def250bd60ea63b1f04a8e0d2
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#include "hif-ops.h" 19#include "cfg80211.h" 20#include "target.h" 21#include "debug.h" 22 23struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 *node_addr) 24{ 25 /* TODO: Findout vif */ 26 struct ath6kl_vif *vif = ar->vif; 27 struct ath6kl_sta *conn = NULL; 28 u8 i, max_conn; 29 30 max_conn = (vif->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0; 31 32 for (i = 0; i < max_conn; i++) { 33 if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) { 34 conn = &ar->sta_list[i]; 35 break; 36 } 37 } 38 39 return conn; 40} 41 42struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid) 43{ 44 struct ath6kl_sta *conn = NULL; 45 u8 ctr; 46 47 for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) { 48 if (ar->sta_list[ctr].aid == aid) { 49 conn = &ar->sta_list[ctr]; 50 break; 51 } 52 } 53 return conn; 54} 55 56static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie, 57 u8 ielen, u8 keymgmt, u8 ucipher, u8 auth) 58{ 59 struct ath6kl_sta *sta; 60 u8 free_slot; 61 62 free_slot = aid - 1; 63 64 sta = &ar->sta_list[free_slot]; 65 memcpy(sta->mac, mac, ETH_ALEN); 66 if (ielen <= ATH6KL_MAX_IE) 67 memcpy(sta->wpa_ie, wpaie, ielen); 68 sta->aid = aid; 69 sta->keymgmt = keymgmt; 70 sta->ucipher = ucipher; 71 sta->auth = auth; 72 73 ar->sta_list_index = ar->sta_list_index | (1 << free_slot); 74 ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid); 75} 76 77static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i) 78{ 79 struct ath6kl_sta *sta = &ar->sta_list[i]; 80 81 /* empty the queued pkts in the PS queue if any */ 82 spin_lock_bh(&sta->psq_lock); 83 skb_queue_purge(&sta->psq); 84 spin_unlock_bh(&sta->psq_lock); 85 86 memset(&ar->ap_stats.sta[sta->aid - 1], 0, 87 sizeof(struct wmi_per_sta_stat)); 88 memset(sta->mac, 0, ETH_ALEN); 89 memset(sta->wpa_ie, 0, ATH6KL_MAX_IE); 90 sta->aid = 0; 91 sta->sta_flags = 0; 92 93 ar->sta_list_index = ar->sta_list_index & ~(1 << i); 94 95} 96 97static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason) 98{ 99 u8 i, removed = 0; 100 101 if (is_zero_ether_addr(mac)) 102 return removed; 103 104 if (is_broadcast_ether_addr(mac)) { 105 ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n"); 106 107 for (i = 0; i < AP_MAX_NUM_STA; i++) { 108 if (!is_zero_ether_addr(ar->sta_list[i].mac)) { 109 ath6kl_sta_cleanup(ar, i); 110 removed = 1; 111 } 112 } 113 } else { 114 for (i = 0; i < AP_MAX_NUM_STA; i++) { 115 if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) { 116 ath6kl_dbg(ATH6KL_DBG_TRC, 117 "deleting station %pM aid=%d reason=%d\n", 118 mac, ar->sta_list[i].aid, reason); 119 ath6kl_sta_cleanup(ar, i); 120 removed = 1; 121 break; 122 } 123 } 124 } 125 126 return removed; 127} 128 129enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac) 130{ 131 struct ath6kl *ar = devt; 132 return ar->ac2ep_map[ac]; 133} 134 135struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar) 136{ 137 struct ath6kl_cookie *cookie; 138 139 cookie = ar->cookie_list; 140 if (cookie != NULL) { 141 ar->cookie_list = cookie->arc_list_next; 142 ar->cookie_count--; 143 } 144 145 return cookie; 146} 147 148void ath6kl_cookie_init(struct ath6kl *ar) 149{ 150 u32 i; 151 152 ar->cookie_list = NULL; 153 ar->cookie_count = 0; 154 155 memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem)); 156 157 for (i = 0; i < MAX_COOKIE_NUM; i++) 158 ath6kl_free_cookie(ar, &ar->cookie_mem[i]); 159} 160 161void ath6kl_cookie_cleanup(struct ath6kl *ar) 162{ 163 ar->cookie_list = NULL; 164 ar->cookie_count = 0; 165} 166 167void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie) 168{ 169 /* Insert first */ 170 171 if (!ar || !cookie) 172 return; 173 174 cookie->arc_list_next = ar->cookie_list; 175 ar->cookie_list = cookie; 176 ar->cookie_count++; 177} 178 179/* set the window address register (using 4-byte register access ). */ 180static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr) 181{ 182 int status; 183 s32 i; 184 __le32 addr_val; 185 186 /* 187 * Write bytes 1,2,3 of the register to set the upper address bytes, 188 * the LSB is written last to initiate the access cycle 189 */ 190 191 for (i = 1; i <= 3; i++) { 192 /* 193 * Fill the buffer with the address byte value we want to 194 * hit 4 times. No need to worry about endianness as the 195 * same byte is copied to all four bytes of addr_val at 196 * any time. 197 */ 198 memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4); 199 200 /* 201 * Hit each byte of the register address with a 4-byte 202 * write operation to the same address, this is a harmless 203 * operation. 204 */ 205 status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val, 206 4, HIF_WR_SYNC_BYTE_FIX); 207 if (status) 208 break; 209 } 210 211 if (status) { 212 ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n", 213 addr, reg_addr); 214 return status; 215 } 216 217 /* 218 * Write the address register again, this time write the whole 219 * 4-byte value. The effect here is that the LSB write causes the 220 * cycle to start, the extra 3 byte write to bytes 1,2,3 has no 221 * effect since we are writing the same values again 222 */ 223 addr_val = cpu_to_le32(addr); 224 status = hif_read_write_sync(ar, reg_addr, 225 (u8 *)&(addr_val), 226 4, HIF_WR_SYNC_BYTE_INC); 227 228 if (status) { 229 ath6kl_err("failed to write 0x%x to window reg: 0x%X\n", 230 addr, reg_addr); 231 return status; 232 } 233 234 return 0; 235} 236 237/* 238 * Read from the hardware through its diagnostic window. No cooperation 239 * from the firmware is required for this. 240 */ 241int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value) 242{ 243 int ret; 244 245 /* set window register to start read cycle */ 246 ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address); 247 if (ret) 248 return ret; 249 250 /* read the data */ 251 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value, 252 sizeof(*value), HIF_RD_SYNC_BYTE_INC); 253 if (ret) { 254 ath6kl_warn("failed to read32 through diagnose window: %d\n", 255 ret); 256 return ret; 257 } 258 259 return 0; 260} 261 262/* 263 * Write to the ATH6KL through its diagnostic window. No cooperation from 264 * the Target is required for this. 265 */ 266int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value) 267{ 268 int ret; 269 270 /* set write data */ 271 ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value, 272 sizeof(value), HIF_WR_SYNC_BYTE_INC); 273 if (ret) { 274 ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n", 275 address, value); 276 return ret; 277 } 278 279 /* set window register, which starts the write cycle */ 280 return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS, 281 address); 282} 283 284int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length) 285{ 286 u32 count, *buf = data; 287 int ret; 288 289 if (WARN_ON(length % 4)) 290 return -EINVAL; 291 292 for (count = 0; count < length / 4; count++, address += 4) { 293 ret = ath6kl_diag_read32(ar, address, &buf[count]); 294 if (ret) 295 return ret; 296 } 297 298 return 0; 299} 300 301int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length) 302{ 303 u32 count; 304 __le32 *buf = data; 305 int ret; 306 307 if (WARN_ON(length % 4)) 308 return -EINVAL; 309 310 for (count = 0; count < length / 4; count++, address += 4) { 311 ret = ath6kl_diag_write32(ar, address, buf[count]); 312 if (ret) 313 return ret; 314 } 315 316 return 0; 317} 318 319int ath6kl_read_fwlogs(struct ath6kl *ar) 320{ 321 struct ath6kl_dbglog_hdr debug_hdr; 322 struct ath6kl_dbglog_buf debug_buf; 323 u32 address, length, dropped, firstbuf, debug_hdr_addr; 324 int ret = 0, loop; 325 u8 *buf; 326 327 buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL); 328 if (!buf) 329 return -ENOMEM; 330 331 address = TARG_VTOP(ar->target_type, 332 ath6kl_get_hi_item_addr(ar, 333 HI_ITEM(hi_dbglog_hdr))); 334 335 ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr); 336 if (ret) 337 goto out; 338 339 /* Get the contents of the ring buffer */ 340 if (debug_hdr_addr == 0) { 341 ath6kl_warn("Invalid address for debug_hdr_addr\n"); 342 ret = -EINVAL; 343 goto out; 344 } 345 346 address = TARG_VTOP(ar->target_type, debug_hdr_addr); 347 ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr)); 348 349 address = TARG_VTOP(ar->target_type, 350 le32_to_cpu(debug_hdr.dbuf_addr)); 351 firstbuf = address; 352 dropped = le32_to_cpu(debug_hdr.dropped); 353 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 354 355 loop = 100; 356 357 do { 358 address = TARG_VTOP(ar->target_type, 359 le32_to_cpu(debug_buf.buffer_addr)); 360 length = le32_to_cpu(debug_buf.length); 361 362 if (length != 0 && (le32_to_cpu(debug_buf.length) <= 363 le32_to_cpu(debug_buf.bufsize))) { 364 length = ALIGN(length, 4); 365 366 ret = ath6kl_diag_read(ar, address, 367 buf, length); 368 if (ret) 369 goto out; 370 371 ath6kl_debug_fwlog_event(ar, buf, length); 372 } 373 374 address = TARG_VTOP(ar->target_type, 375 le32_to_cpu(debug_buf.next)); 376 ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf)); 377 if (ret) 378 goto out; 379 380 loop--; 381 382 if (WARN_ON(loop == 0)) { 383 ret = -ETIMEDOUT; 384 goto out; 385 } 386 } while (address != firstbuf); 387 388out: 389 kfree(buf); 390 391 return ret; 392} 393 394/* FIXME: move to a better place, target.h? */ 395#define AR6003_RESET_CONTROL_ADDRESS 0x00004000 396#define AR6004_RESET_CONTROL_ADDRESS 0x00004000 397 398static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type, 399 bool wait_fot_compltn, bool cold_reset) 400{ 401 int status = 0; 402 u32 address; 403 __le32 data; 404 405 if (target_type != TARGET_TYPE_AR6003 && 406 target_type != TARGET_TYPE_AR6004) 407 return; 408 409 data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) : 410 cpu_to_le32(RESET_CONTROL_MBOX_RST); 411 412 switch (target_type) { 413 case TARGET_TYPE_AR6003: 414 address = AR6003_RESET_CONTROL_ADDRESS; 415 break; 416 case TARGET_TYPE_AR6004: 417 address = AR6004_RESET_CONTROL_ADDRESS; 418 break; 419 default: 420 address = AR6003_RESET_CONTROL_ADDRESS; 421 break; 422 } 423 424 status = ath6kl_diag_write32(ar, address, data); 425 426 if (status) 427 ath6kl_err("failed to reset target\n"); 428} 429 430void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile, 431 bool get_dbglogs) 432{ 433 struct ath6kl *ar = ath6kl_priv(dev); 434 struct ath6kl_vif *vif = netdev_priv(dev); 435 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; 436 bool discon_issued; 437 438 netif_stop_queue(dev); 439 440 /* disable the target and the interrupts associated with it */ 441 if (test_bit(WMI_READY, &ar->flag)) { 442 discon_issued = (test_bit(CONNECTED, &vif->flags) || 443 test_bit(CONNECT_PEND, &vif->flags)); 444 ath6kl_disconnect(ar, vif->fw_vif_idx); 445 if (!keep_profile) 446 ath6kl_init_profile_info(ar); 447 448 del_timer(&vif->disconnect_timer); 449 450 clear_bit(WMI_READY, &ar->flag); 451 ath6kl_wmi_shutdown(ar->wmi); 452 clear_bit(WMI_ENABLED, &ar->flag); 453 ar->wmi = NULL; 454 455 /* 456 * After wmi_shudown all WMI events will be dropped. We 457 * need to cleanup the buffers allocated in AP mode and 458 * give disconnect notification to stack, which usually 459 * happens in the disconnect_event. Simulate the disconnect 460 * event by calling the function directly. Sometimes 461 * disconnect_event will be received when the debug logs 462 * are collected. 463 */ 464 if (discon_issued) 465 ath6kl_disconnect_event(ar, DISCONNECT_CMD, 466 (vif->nw_type & AP_NETWORK) ? 467 bcast_mac : vif->bssid, 468 0, NULL, 0); 469 470 ar->user_key_ctrl = 0; 471 472 } else { 473 ath6kl_dbg(ATH6KL_DBG_TRC, 474 "%s: wmi is not ready 0x%p 0x%p\n", 475 __func__, ar, ar->wmi); 476 477 /* Shut down WMI if we have started it */ 478 if (test_bit(WMI_ENABLED, &ar->flag)) { 479 ath6kl_dbg(ATH6KL_DBG_TRC, 480 "%s: shut down wmi\n", __func__); 481 ath6kl_wmi_shutdown(ar->wmi); 482 clear_bit(WMI_ENABLED, &ar->flag); 483 ar->wmi = NULL; 484 } 485 } 486 487 if (ar->htc_target) { 488 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__); 489 ath6kl_htc_stop(ar->htc_target); 490 } 491 492 /* 493 * Try to reset the device if we can. The driver may have been 494 * configure NOT to reset the target during a debug session. 495 */ 496 ath6kl_dbg(ATH6KL_DBG_TRC, 497 "attempting to reset target on instance destroy\n"); 498 ath6kl_reset_device(ar, ar->target_type, true, true); 499} 500 501static void ath6kl_install_static_wep_keys(struct ath6kl *ar) 502{ 503 /* TODO: Findout vif */ 504 struct ath6kl_vif *vif = ar->vif; 505 u8 index; 506 u8 keyusage; 507 508 for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) { 509 if (vif->wep_key_list[index].key_len) { 510 keyusage = GROUP_USAGE; 511 if (index == vif->def_txkey_index) 512 keyusage |= TX_USAGE; 513 514 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, 515 index, 516 WEP_CRYPT, 517 keyusage, 518 vif->wep_key_list[index].key_len, 519 NULL, 520 vif->wep_key_list[index].key, 521 KEY_OP_INIT_VAL, NULL, 522 NO_SYNC_WMIFLAG); 523 } 524 } 525} 526 527void ath6kl_connect_ap_mode_bss(struct ath6kl *ar, u16 channel) 528{ 529 struct ath6kl_req_key *ik; 530 int res; 531 u8 key_rsc[ATH6KL_KEY_SEQ_LEN]; 532 /* TODO: Pass vif instead of taking it from ar */ 533 struct ath6kl_vif *vif = ar->vif; 534 535 ik = &ar->ap_mode_bkey; 536 537 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel); 538 539 switch (vif->auth_mode) { 540 case NONE_AUTH: 541 if (vif->prwise_crypto == WEP_CRYPT) 542 ath6kl_install_static_wep_keys(ar); 543 break; 544 case WPA_PSK_AUTH: 545 case WPA2_PSK_AUTH: 546 case (WPA_PSK_AUTH | WPA2_PSK_AUTH): 547 if (!ik->valid) 548 break; 549 550 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for " 551 "the initial group key for AP mode\n"); 552 memset(key_rsc, 0, sizeof(key_rsc)); 553 res = ath6kl_wmi_addkey_cmd( 554 ar->wmi, vif->fw_vif_idx, ik->key_index, ik->key_type, 555 GROUP_USAGE, ik->key_len, key_rsc, ik->key, 556 KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG); 557 if (res) { 558 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed " 559 "addkey failed: %d\n", res); 560 } 561 break; 562 } 563 564 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 565 set_bit(CONNECTED, &vif->flags); 566 netif_carrier_on(ar->net_dev); 567} 568 569void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr, 570 u8 keymgmt, u8 ucipher, u8 auth, 571 u8 assoc_req_len, u8 *assoc_info) 572{ 573 u8 *ies = NULL, *wpa_ie = NULL, *pos; 574 size_t ies_len = 0; 575 struct station_info sinfo; 576 577 ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid); 578 579 if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) { 580 struct ieee80211_mgmt *mgmt = 581 (struct ieee80211_mgmt *) assoc_info; 582 if (ieee80211_is_assoc_req(mgmt->frame_control) && 583 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) + 584 sizeof(mgmt->u.assoc_req)) { 585 ies = mgmt->u.assoc_req.variable; 586 ies_len = assoc_info + assoc_req_len - ies; 587 } else if (ieee80211_is_reassoc_req(mgmt->frame_control) && 588 assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) 589 + sizeof(mgmt->u.reassoc_req)) { 590 ies = mgmt->u.reassoc_req.variable; 591 ies_len = assoc_info + assoc_req_len - ies; 592 } 593 } 594 595 pos = ies; 596 while (pos && pos + 1 < ies + ies_len) { 597 if (pos + 2 + pos[1] > ies + ies_len) 598 break; 599 if (pos[0] == WLAN_EID_RSN) 600 wpa_ie = pos; /* RSN IE */ 601 else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && 602 pos[1] >= 4 && 603 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) { 604 if (pos[5] == 0x01) 605 wpa_ie = pos; /* WPA IE */ 606 else if (pos[5] == 0x04) { 607 wpa_ie = pos; /* WPS IE */ 608 break; /* overrides WPA/RSN IE */ 609 } 610 } 611 pos += 2 + pos[1]; 612 } 613 614 ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie, 615 wpa_ie ? 2 + wpa_ie[1] : 0, 616 keymgmt, ucipher, auth); 617 618 /* send event to application */ 619 memset(&sinfo, 0, sizeof(sinfo)); 620 621 /* TODO: sinfo.generation */ 622 623 sinfo.assoc_req_ies = ies; 624 sinfo.assoc_req_ies_len = ies_len; 625 sinfo.filled |= STATION_INFO_ASSOC_REQ_IES; 626 627 cfg80211_new_sta(ar->net_dev, mac_addr, &sinfo, GFP_KERNEL); 628 629 netif_wake_queue(ar->net_dev); 630} 631 632/* Functions for Tx credit handling */ 633void ath6k_credit_init(struct htc_credit_state_info *cred_info, 634 struct list_head *ep_list, 635 int tot_credits) 636{ 637 struct htc_endpoint_credit_dist *cur_ep_dist; 638 int count; 639 640 cred_info->cur_free_credits = tot_credits; 641 cred_info->total_avail_credits = tot_credits; 642 643 list_for_each_entry(cur_ep_dist, ep_list, list) { 644 if (cur_ep_dist->endpoint == ENDPOINT_0) 645 continue; 646 647 cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg; 648 649 if (tot_credits > 4) 650 if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) || 651 (cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) { 652 ath6kl_deposit_credit_to_ep(cred_info, 653 cur_ep_dist, 654 cur_ep_dist->cred_min); 655 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 656 } 657 658 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) { 659 ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist, 660 cur_ep_dist->cred_min); 661 /* 662 * Control service is always marked active, it 663 * never goes inactive EVER. 664 */ 665 cur_ep_dist->dist_flags |= HTC_EP_ACTIVE; 666 } else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC) 667 /* this is the lowest priority data endpoint */ 668 cred_info->lowestpri_ep_dist = cur_ep_dist->list; 669 670 /* 671 * Streams have to be created (explicit | implicit) for all 672 * kinds of traffic. BE endpoints are also inactive in the 673 * beginning. When BE traffic starts it creates implicit 674 * streams that redistributes credits. 675 * 676 * Note: all other endpoints have minimums set but are 677 * initially given NO credits. credits will be distributed 678 * as traffic activity demands 679 */ 680 } 681 682 WARN_ON(cred_info->cur_free_credits <= 0); 683 684 list_for_each_entry(cur_ep_dist, ep_list, list) { 685 if (cur_ep_dist->endpoint == ENDPOINT_0) 686 continue; 687 688 if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) 689 cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg; 690 else { 691 /* 692 * For the remaining data endpoints, we assume that 693 * each cred_per_msg are the same. We use a simple 694 * calculation here, we take the remaining credits 695 * and determine how many max messages this can 696 * cover and then set each endpoint's normal value 697 * equal to 3/4 this amount. 698 */ 699 count = (cred_info->cur_free_credits / 700 cur_ep_dist->cred_per_msg) 701 * cur_ep_dist->cred_per_msg; 702 count = (count * 3) >> 2; 703 count = max(count, cur_ep_dist->cred_per_msg); 704 cur_ep_dist->cred_norm = count; 705 706 } 707 } 708} 709 710/* initialize and setup credit distribution */ 711int ath6k_setup_credit_dist(void *htc_handle, 712 struct htc_credit_state_info *cred_info) 713{ 714 u16 servicepriority[5]; 715 716 memset(cred_info, 0, sizeof(struct htc_credit_state_info)); 717 718 servicepriority[0] = WMI_CONTROL_SVC; /* highest */ 719 servicepriority[1] = WMI_DATA_VO_SVC; 720 servicepriority[2] = WMI_DATA_VI_SVC; 721 servicepriority[3] = WMI_DATA_BE_SVC; 722 servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */ 723 724 /* set priority list */ 725 ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5); 726 727 return 0; 728} 729 730/* reduce an ep's credits back to a set limit */ 731static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info, 732 struct htc_endpoint_credit_dist *ep_dist, 733 int limit) 734{ 735 int credits; 736 737 ep_dist->cred_assngd = limit; 738 739 if (ep_dist->credits <= limit) 740 return; 741 742 credits = ep_dist->credits - limit; 743 ep_dist->credits -= credits; 744 cred_info->cur_free_credits += credits; 745} 746 747static void ath6k_credit_update(struct htc_credit_state_info *cred_info, 748 struct list_head *epdist_list) 749{ 750 struct htc_endpoint_credit_dist *cur_dist_list; 751 752 list_for_each_entry(cur_dist_list, epdist_list, list) { 753 if (cur_dist_list->endpoint == ENDPOINT_0) 754 continue; 755 756 if (cur_dist_list->cred_to_dist > 0) { 757 cur_dist_list->credits += 758 cur_dist_list->cred_to_dist; 759 cur_dist_list->cred_to_dist = 0; 760 if (cur_dist_list->credits > 761 cur_dist_list->cred_assngd) 762 ath6k_reduce_credits(cred_info, 763 cur_dist_list, 764 cur_dist_list->cred_assngd); 765 766 if (cur_dist_list->credits > 767 cur_dist_list->cred_norm) 768 ath6k_reduce_credits(cred_info, cur_dist_list, 769 cur_dist_list->cred_norm); 770 771 if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) { 772 if (cur_dist_list->txq_depth == 0) 773 ath6k_reduce_credits(cred_info, 774 cur_dist_list, 0); 775 } 776 } 777 } 778} 779 780/* 781 * HTC has an endpoint that needs credits, ep_dist is the endpoint in 782 * question. 783 */ 784void ath6k_seek_credits(struct htc_credit_state_info *cred_info, 785 struct htc_endpoint_credit_dist *ep_dist) 786{ 787 struct htc_endpoint_credit_dist *curdist_list; 788 int credits = 0; 789 int need; 790 791 if (ep_dist->svc_id == WMI_CONTROL_SVC) 792 goto out; 793 794 if ((ep_dist->svc_id == WMI_DATA_VI_SVC) || 795 (ep_dist->svc_id == WMI_DATA_VO_SVC)) 796 if ((ep_dist->cred_assngd >= ep_dist->cred_norm)) 797 goto out; 798 799 /* 800 * For all other services, we follow a simple algorithm of: 801 * 802 * 1. checking the free pool for credits 803 * 2. checking lower priority endpoints for credits to take 804 */ 805 806 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 807 808 if (credits >= ep_dist->seek_cred) 809 goto out; 810 811 /* 812 * We don't have enough in the free pool, try taking away from 813 * lower priority services The rule for taking away credits: 814 * 815 * 1. Only take from lower priority endpoints 816 * 2. Only take what is allocated above the minimum (never 817 * starve an endpoint completely) 818 * 3. Only take what you need. 819 */ 820 821 list_for_each_entry_reverse(curdist_list, 822 &cred_info->lowestpri_ep_dist, 823 list) { 824 if (curdist_list == ep_dist) 825 break; 826 827 need = ep_dist->seek_cred - cred_info->cur_free_credits; 828 829 if ((curdist_list->cred_assngd - need) >= 830 curdist_list->cred_min) { 831 /* 832 * The current one has been allocated more than 833 * it's minimum and it has enough credits assigned 834 * above it's minimum to fulfill our need try to 835 * take away just enough to fulfill our need. 836 */ 837 ath6k_reduce_credits(cred_info, curdist_list, 838 curdist_list->cred_assngd - need); 839 840 if (cred_info->cur_free_credits >= 841 ep_dist->seek_cred) 842 break; 843 } 844 845 if (curdist_list->endpoint == ENDPOINT_0) 846 break; 847 } 848 849 credits = min(cred_info->cur_free_credits, ep_dist->seek_cred); 850 851out: 852 /* did we find some credits? */ 853 if (credits) 854 ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits); 855 856 ep_dist->seek_cred = 0; 857} 858 859/* redistribute credits based on activity change */ 860static void ath6k_redistribute_credits(struct htc_credit_state_info *info, 861 struct list_head *ep_dist_list) 862{ 863 struct htc_endpoint_credit_dist *curdist_list; 864 865 list_for_each_entry(curdist_list, ep_dist_list, list) { 866 if (curdist_list->endpoint == ENDPOINT_0) 867 continue; 868 869 if ((curdist_list->svc_id == WMI_DATA_BK_SVC) || 870 (curdist_list->svc_id == WMI_DATA_BE_SVC)) 871 curdist_list->dist_flags |= HTC_EP_ACTIVE; 872 873 if ((curdist_list->svc_id != WMI_CONTROL_SVC) && 874 !(curdist_list->dist_flags & HTC_EP_ACTIVE)) { 875 if (curdist_list->txq_depth == 0) 876 ath6k_reduce_credits(info, 877 curdist_list, 0); 878 else 879 ath6k_reduce_credits(info, 880 curdist_list, 881 curdist_list->cred_min); 882 } 883 } 884} 885 886/* 887 * 888 * This function is invoked whenever endpoints require credit 889 * distributions. A lock is held while this function is invoked, this 890 * function shall NOT block. The ep_dist_list is a list of distribution 891 * structures in prioritized order as defined by the call to the 892 * htc_set_credit_dist() api. 893 */ 894void ath6k_credit_distribute(struct htc_credit_state_info *cred_info, 895 struct list_head *ep_dist_list, 896 enum htc_credit_dist_reason reason) 897{ 898 switch (reason) { 899 case HTC_CREDIT_DIST_SEND_COMPLETE: 900 ath6k_credit_update(cred_info, ep_dist_list); 901 break; 902 case HTC_CREDIT_DIST_ACTIVITY_CHANGE: 903 ath6k_redistribute_credits(cred_info, ep_dist_list); 904 break; 905 default: 906 break; 907 } 908 909 WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits); 910 WARN_ON(cred_info->cur_free_credits < 0); 911} 912 913void disconnect_timer_handler(unsigned long ptr) 914{ 915 struct net_device *dev = (struct net_device *)ptr; 916 struct ath6kl_vif *vif = netdev_priv(dev); 917 918 ath6kl_init_profile_info(vif->ar); 919 ath6kl_disconnect(vif->ar, vif->fw_vif_idx); 920} 921 922void ath6kl_disconnect(struct ath6kl *ar, u8 if_idx) 923{ 924 /* TODO: Pass vif instead of taking it from ar */ 925 struct ath6kl_vif *vif = ar->vif; 926 927 if (test_bit(CONNECTED, &vif->flags) || 928 test_bit(CONNECT_PEND, &vif->flags)) { 929 ath6kl_wmi_disconnect_cmd(ar->wmi, if_idx); 930 /* 931 * Disconnect command is issued, clear the connect pending 932 * flag. The connected flag will be cleared in 933 * disconnect event notification. 934 */ 935 clear_bit(CONNECT_PEND, &vif->flags); 936 } 937} 938 939void ath6kl_deep_sleep_enable(struct ath6kl *ar) 940{ 941 /* TODO: Pass vif instead of taking it from ar */ 942 struct ath6kl_vif *vif = ar->vif; 943 944 switch (vif->sme_state) { 945 case SME_CONNECTING: 946 cfg80211_connect_result(ar->net_dev, vif->bssid, NULL, 0, 947 NULL, 0, 948 WLAN_STATUS_UNSPECIFIED_FAILURE, 949 GFP_KERNEL); 950 break; 951 case SME_CONNECTED: 952 default: 953 /* 954 * FIXME: oddly enough smeState is in DISCONNECTED during 955 * suspend, why? Need to send disconnected event in that 956 * state. 957 */ 958 cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL); 959 break; 960 } 961 962 if (test_bit(CONNECTED, &vif->flags) || 963 test_bit(CONNECT_PEND, &vif->flags)) 964 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx); 965 966 vif->sme_state = SME_DISCONNECTED; 967 968 /* disable scanning */ 969 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF, 0, 0, 970 0, 0, 0, 0, 0, 0, 0) != 0) 971 printk(KERN_WARNING "ath6kl: failed to disable scan " 972 "during suspend\n"); 973 974 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 975 976 /* save the current power mode before enabling power save */ 977 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode; 978 979 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0) 980 ath6kl_warn("ath6kl_deep_sleep_enable: " 981 "wmi_powermode_cmd failed\n"); 982} 983 984/* WMI Event handlers */ 985 986static const char *get_hw_id_string(u32 id) 987{ 988 switch (id) { 989 case AR6003_REV1_VERSION: 990 return "1.0"; 991 case AR6003_REV2_VERSION: 992 return "2.0"; 993 case AR6003_REV3_VERSION: 994 return "2.1.1"; 995 default: 996 return "unknown"; 997 } 998} 999 1000void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver) 1001{ 1002 struct ath6kl *ar = devt; 1003 struct net_device *dev = ar->net_dev; 1004 1005 memcpy(dev->dev_addr, datap, ETH_ALEN); 1006 ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n", 1007 __func__, dev->dev_addr); 1008 1009 ar->version.wlan_ver = sw_ver; 1010 ar->version.abi_ver = abi_ver; 1011 1012 snprintf(ar->wiphy->fw_version, 1013 sizeof(ar->wiphy->fw_version), 1014 "%u.%u.%u.%u", 1015 (ar->version.wlan_ver & 0xf0000000) >> 28, 1016 (ar->version.wlan_ver & 0x0f000000) >> 24, 1017 (ar->version.wlan_ver & 0x00ff0000) >> 16, 1018 (ar->version.wlan_ver & 0x0000ffff)); 1019 1020 /* indicate to the waiting thread that the ready event was received */ 1021 set_bit(WMI_READY, &ar->flag); 1022 wake_up(&ar->event_wq); 1023 1024 ath6kl_info("hw %s fw %s%s\n", 1025 get_hw_id_string(ar->wiphy->hw_version), 1026 ar->wiphy->fw_version, 1027 test_bit(TESTMODE, &ar->flag) ? " testmode" : ""); 1028} 1029 1030void ath6kl_scan_complete_evt(struct ath6kl *ar, int status) 1031{ 1032 /* TODO: Pass vif instead of taking it from ar */ 1033 struct ath6kl_vif *vif = ar->vif; 1034 1035 ath6kl_cfg80211_scan_complete_event(ar, status); 1036 1037 if (!ar->usr_bss_filter) { 1038 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1039 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1040 } 1041 1042 ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status); 1043} 1044 1045void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid, 1046 u16 listen_int, u16 beacon_int, 1047 enum network_type net_type, u8 beacon_ie_len, 1048 u8 assoc_req_len, u8 assoc_resp_len, 1049 u8 *assoc_info) 1050{ 1051 /* TODO: findout vif instead of taking it from ar */ 1052 struct ath6kl_vif *vif = ar->vif; 1053 1054 ath6kl_cfg80211_connect_event(ar, channel, bssid, 1055 listen_int, beacon_int, 1056 net_type, beacon_ie_len, 1057 assoc_req_len, assoc_resp_len, 1058 assoc_info); 1059 1060 memcpy(vif->bssid, bssid, sizeof(vif->bssid)); 1061 vif->bss_ch = channel; 1062 1063 if ((vif->nw_type == INFRA_NETWORK)) 1064 ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 1065 ar->listen_intvl_t, 1066 ar->listen_intvl_b); 1067 1068 netif_wake_queue(ar->net_dev); 1069 1070 /* Update connect & link status atomically */ 1071 spin_lock_bh(&ar->lock); 1072 set_bit(CONNECTED, &vif->flags); 1073 clear_bit(CONNECT_PEND, &vif->flags); 1074 netif_carrier_on(ar->net_dev); 1075 spin_unlock_bh(&ar->lock); 1076 1077 aggr_reset_state(vif->aggr_cntxt); 1078 vif->reconnect_flag = 0; 1079 1080 if ((vif->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) { 1081 memset(ar->node_map, 0, sizeof(ar->node_map)); 1082 ar->node_num = 0; 1083 ar->next_ep_id = ENDPOINT_2; 1084 } 1085 1086 if (!ar->usr_bss_filter) { 1087 set_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags); 1088 ath6kl_wmi_bssfilter_cmd(ar->wmi, CURRENT_BSS_FILTER, 0); 1089 } 1090} 1091 1092void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast) 1093{ 1094 struct ath6kl_sta *sta; 1095 /* TODO: Findout vif */ 1096 struct ath6kl_vif *vif = ar->vif; 1097 u8 tsc[6]; 1098 /* 1099 * For AP case, keyid will have aid of STA which sent pkt with 1100 * MIC error. Use this aid to get MAC & send it to hostapd. 1101 */ 1102 if (vif->nw_type == AP_NETWORK) { 1103 sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2)); 1104 if (!sta) 1105 return; 1106 1107 ath6kl_dbg(ATH6KL_DBG_TRC, 1108 "ap tkip mic error received from aid=%d\n", keyid); 1109 1110 memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */ 1111 cfg80211_michael_mic_failure(ar->net_dev, sta->mac, 1112 NL80211_KEYTYPE_PAIRWISE, keyid, 1113 tsc, GFP_KERNEL); 1114 } else 1115 ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast); 1116 1117} 1118 1119static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len) 1120{ 1121 struct wmi_target_stats *tgt_stats = 1122 (struct wmi_target_stats *) ptr; 1123 /* TODO: Findout vif */ 1124 struct ath6kl_vif *vif = ar->vif; 1125 struct target_stats *stats = &vif->target_stats; 1126 struct tkip_ccmp_stats *ccmp_stats; 1127 u8 ac; 1128 1129 if (len < sizeof(*tgt_stats)) 1130 return; 1131 1132 ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n"); 1133 1134 stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt); 1135 stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte); 1136 stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt); 1137 stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte); 1138 stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt); 1139 stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte); 1140 stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt); 1141 stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte); 1142 stats->tx_rts_success_cnt += 1143 le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt); 1144 1145 for (ac = 0; ac < WMM_NUM_AC; ac++) 1146 stats->tx_pkt_per_ac[ac] += 1147 le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]); 1148 1149 stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err); 1150 stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt); 1151 stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt); 1152 stats->tx_mult_retry_cnt += 1153 le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt); 1154 stats->tx_rts_fail_cnt += 1155 le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt); 1156 stats->tx_ucast_rate = 1157 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate)); 1158 1159 stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt); 1160 stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte); 1161 stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt); 1162 stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte); 1163 stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt); 1164 stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte); 1165 stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt); 1166 stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte); 1167 stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt); 1168 stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err); 1169 stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err); 1170 stats->rx_key_cache_miss += 1171 le32_to_cpu(tgt_stats->stats.rx.key_cache_miss); 1172 stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err); 1173 stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame); 1174 stats->rx_ucast_rate = 1175 ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate)); 1176 1177 ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats; 1178 1179 stats->tkip_local_mic_fail += 1180 le32_to_cpu(ccmp_stats->tkip_local_mic_fail); 1181 stats->tkip_cnter_measures_invoked += 1182 le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked); 1183 stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err); 1184 1185 stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err); 1186 stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays); 1187 1188 stats->pwr_save_fail_cnt += 1189 le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt); 1190 stats->noise_floor_calib = 1191 a_sle32_to_cpu(tgt_stats->noise_floor_calib); 1192 1193 stats->cs_bmiss_cnt += 1194 le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt); 1195 stats->cs_low_rssi_cnt += 1196 le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt); 1197 stats->cs_connect_cnt += 1198 le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt); 1199 stats->cs_discon_cnt += 1200 le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt); 1201 1202 stats->cs_ave_beacon_rssi = 1203 a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi); 1204 1205 stats->cs_last_roam_msec = 1206 tgt_stats->cserv_stats.cs_last_roam_msec; 1207 stats->cs_snr = tgt_stats->cserv_stats.cs_snr; 1208 stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi); 1209 1210 stats->lq_val = le32_to_cpu(tgt_stats->lq_val); 1211 1212 stats->wow_pkt_dropped += 1213 le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped); 1214 stats->wow_host_pkt_wakeups += 1215 tgt_stats->wow_stats.wow_host_pkt_wakeups; 1216 stats->wow_host_evt_wakeups += 1217 tgt_stats->wow_stats.wow_host_evt_wakeups; 1218 stats->wow_evt_discarded += 1219 le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded); 1220 1221 if (test_bit(STATS_UPDATE_PEND, &vif->flags)) { 1222 clear_bit(STATS_UPDATE_PEND, &vif->flags); 1223 wake_up(&ar->event_wq); 1224 } 1225} 1226 1227static void ath6kl_add_le32(__le32 *var, __le32 val) 1228{ 1229 *var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val)); 1230} 1231 1232void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len) 1233{ 1234 struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr; 1235 struct wmi_ap_mode_stat *ap = &ar->ap_stats; 1236 struct wmi_per_sta_stat *st_ap, *st_p; 1237 /* TODO: Findout vif */ 1238 struct ath6kl_vif *vif = ar->vif; 1239 u8 ac; 1240 1241 if (vif->nw_type == AP_NETWORK) { 1242 if (len < sizeof(*p)) 1243 return; 1244 1245 for (ac = 0; ac < AP_MAX_NUM_STA; ac++) { 1246 st_ap = &ap->sta[ac]; 1247 st_p = &p->sta[ac]; 1248 1249 ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes); 1250 ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts); 1251 ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error); 1252 ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard); 1253 ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes); 1254 ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts); 1255 ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error); 1256 ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard); 1257 } 1258 1259 } else { 1260 ath6kl_update_target_stats(ar, ptr, len); 1261 } 1262} 1263 1264void ath6kl_wakeup_event(void *dev) 1265{ 1266 struct ath6kl *ar = (struct ath6kl *) dev; 1267 1268 wake_up(&ar->event_wq); 1269} 1270 1271void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr) 1272{ 1273 struct ath6kl *ar = (struct ath6kl *) devt; 1274 1275 ar->tx_pwr = tx_pwr; 1276 wake_up(&ar->event_wq); 1277} 1278 1279void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid) 1280{ 1281 struct ath6kl_sta *conn; 1282 struct sk_buff *skb; 1283 bool psq_empty = false; 1284 /* TODO: Pass vif instead of taking it from ar */ 1285 struct ath6kl_vif *vif = ar->vif; 1286 1287 conn = ath6kl_find_sta_by_aid(ar, aid); 1288 1289 if (!conn) 1290 return; 1291 /* 1292 * Send out a packet queued on ps queue. When the ps queue 1293 * becomes empty update the PVB for this station. 1294 */ 1295 spin_lock_bh(&conn->psq_lock); 1296 psq_empty = skb_queue_empty(&conn->psq); 1297 spin_unlock_bh(&conn->psq_lock); 1298 1299 if (psq_empty) 1300 /* TODO: Send out a NULL data frame */ 1301 return; 1302 1303 spin_lock_bh(&conn->psq_lock); 1304 skb = skb_dequeue(&conn->psq); 1305 spin_unlock_bh(&conn->psq_lock); 1306 1307 conn->sta_flags |= STA_PS_POLLED; 1308 ath6kl_data_tx(skb, ar->net_dev); 1309 conn->sta_flags &= ~STA_PS_POLLED; 1310 1311 spin_lock_bh(&conn->psq_lock); 1312 psq_empty = skb_queue_empty(&conn->psq); 1313 spin_unlock_bh(&conn->psq_lock); 1314 1315 if (psq_empty) 1316 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, conn->aid, 0); 1317} 1318 1319void ath6kl_dtimexpiry_event(struct ath6kl *ar) 1320{ 1321 bool mcastq_empty = false; 1322 struct sk_buff *skb; 1323 /* TODO: Pass vif instead of taking it from ar */ 1324 struct ath6kl_vif *vif = ar->vif; 1325 1326 /* 1327 * If there are no associated STAs, ignore the DTIM expiry event. 1328 * There can be potential race conditions where the last associated 1329 * STA may disconnect & before the host could clear the 'Indicate 1330 * DTIM' request to the firmware, the firmware would have just 1331 * indicated a DTIM expiry event. The race is between 'clear DTIM 1332 * expiry cmd' going from the host to the firmware & the DTIM 1333 * expiry event happening from the firmware to the host. 1334 */ 1335 if (!ar->sta_list_index) 1336 return; 1337 1338 spin_lock_bh(&ar->mcastpsq_lock); 1339 mcastq_empty = skb_queue_empty(&ar->mcastpsq); 1340 spin_unlock_bh(&ar->mcastpsq_lock); 1341 1342 if (mcastq_empty) 1343 return; 1344 1345 /* set the STA flag to dtim_expired for the frame to go out */ 1346 set_bit(DTIM_EXPIRED, &vif->flags); 1347 1348 spin_lock_bh(&ar->mcastpsq_lock); 1349 while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) { 1350 spin_unlock_bh(&ar->mcastpsq_lock); 1351 1352 ath6kl_data_tx(skb, ar->net_dev); 1353 1354 spin_lock_bh(&ar->mcastpsq_lock); 1355 } 1356 spin_unlock_bh(&ar->mcastpsq_lock); 1357 1358 clear_bit(DTIM_EXPIRED, &vif->flags); 1359 1360 /* clear the LSB of the BitMapCtl field of the TIM IE */ 1361 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, MCAST_AID, 0); 1362} 1363 1364void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid, 1365 u8 assoc_resp_len, u8 *assoc_info, 1366 u16 prot_reason_status) 1367{ 1368 /* TODO: Findout vif instead of taking it from ar */ 1369 struct ath6kl_vif *vif = ar->vif; 1370 1371 if (vif->nw_type == AP_NETWORK) { 1372 if (!ath6kl_remove_sta(ar, bssid, prot_reason_status)) 1373 return; 1374 1375 /* if no more associated STAs, empty the mcast PS q */ 1376 if (ar->sta_list_index == 0) { 1377 spin_lock_bh(&ar->mcastpsq_lock); 1378 skb_queue_purge(&ar->mcastpsq); 1379 spin_unlock_bh(&ar->mcastpsq_lock); 1380 1381 /* clear the LSB of the TIM IE's BitMapCtl field */ 1382 if (test_bit(WMI_READY, &ar->flag)) 1383 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx, 1384 MCAST_AID, 0); 1385 } 1386 1387 if (!is_broadcast_ether_addr(bssid)) { 1388 /* send event to application */ 1389 cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL); 1390 } 1391 1392 if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) { 1393 memset(vif->wep_key_list, 0, sizeof(vif->wep_key_list)); 1394 clear_bit(CONNECTED, &vif->flags); 1395 } 1396 return; 1397 } 1398 1399 ath6kl_cfg80211_disconnect_event(ar, reason, bssid, 1400 assoc_resp_len, assoc_info, 1401 prot_reason_status); 1402 1403 aggr_reset_state(vif->aggr_cntxt); 1404 1405 del_timer(&vif->disconnect_timer); 1406 1407 ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT, 1408 "disconnect reason is %d\n", reason); 1409 1410 /* 1411 * If the event is due to disconnect cmd from the host, only they 1412 * the target would stop trying to connect. Under any other 1413 * condition, target would keep trying to connect. 1414 */ 1415 if (reason == DISCONNECT_CMD) { 1416 if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag)) 1417 ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0); 1418 } else { 1419 set_bit(CONNECT_PEND, &vif->flags); 1420 if (((reason == ASSOC_FAILED) && 1421 (prot_reason_status == 0x11)) || 1422 ((reason == ASSOC_FAILED) && (prot_reason_status == 0x0) 1423 && (vif->reconnect_flag == 1))) { 1424 set_bit(CONNECTED, &vif->flags); 1425 return; 1426 } 1427 } 1428 1429 /* update connect & link status atomically */ 1430 spin_lock_bh(&ar->lock); 1431 clear_bit(CONNECTED, &vif->flags); 1432 netif_carrier_off(ar->net_dev); 1433 spin_unlock_bh(&ar->lock); 1434 1435 if ((reason != CSERV_DISCONNECT) || (vif->reconnect_flag != 1)) 1436 vif->reconnect_flag = 0; 1437 1438 if (reason != CSERV_DISCONNECT) 1439 ar->user_key_ctrl = 0; 1440 1441 netif_stop_queue(ar->net_dev); 1442 memset(vif->bssid, 0, sizeof(vif->bssid)); 1443 vif->bss_ch = 0; 1444 1445 ath6kl_tx_data_cleanup(ar); 1446} 1447 1448static int ath6kl_open(struct net_device *dev) 1449{ 1450 struct ath6kl *ar = ath6kl_priv(dev); 1451 struct ath6kl_vif *vif = netdev_priv(dev); 1452 1453 spin_lock_bh(&ar->lock); 1454 1455 set_bit(WLAN_ENABLED, &vif->flags); 1456 1457 if (test_bit(CONNECTED, &vif->flags)) { 1458 netif_carrier_on(dev); 1459 netif_wake_queue(dev); 1460 } else 1461 netif_carrier_off(dev); 1462 1463 spin_unlock_bh(&ar->lock); 1464 1465 return 0; 1466} 1467 1468static int ath6kl_close(struct net_device *dev) 1469{ 1470 struct ath6kl *ar = ath6kl_priv(dev); 1471 struct ath6kl_vif *vif = netdev_priv(dev); 1472 1473 netif_stop_queue(dev); 1474 1475 ath6kl_disconnect(ar, vif->fw_vif_idx); 1476 1477 if (test_bit(WMI_READY, &ar->flag)) { 1478 if (ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0xFFFF, 1479 0, 0, 0, 0, 0, 0, 0, 0, 0)) 1480 return -EIO; 1481 1482 clear_bit(WLAN_ENABLED, &vif->flags); 1483 } 1484 1485 ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED); 1486 1487 return 0; 1488} 1489 1490static struct net_device_stats *ath6kl_get_stats(struct net_device *dev) 1491{ 1492 struct ath6kl_vif *vif = netdev_priv(dev); 1493 1494 return &vif->net_stats; 1495} 1496 1497static struct net_device_ops ath6kl_netdev_ops = { 1498 .ndo_open = ath6kl_open, 1499 .ndo_stop = ath6kl_close, 1500 .ndo_start_xmit = ath6kl_data_tx, 1501 .ndo_get_stats = ath6kl_get_stats, 1502}; 1503 1504void init_netdev(struct net_device *dev) 1505{ 1506 dev->netdev_ops = &ath6kl_netdev_ops; 1507 dev->watchdog_timeo = ATH6KL_TX_TIMEOUT; 1508 1509 dev->needed_headroom = ETH_HLEN; 1510 dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) + 1511 sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH 1512 + WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES; 1513 1514 return; 1515} 1516