1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * The full GNU General Public License is included in this distribution 22 * in the file called COPYING. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <linuxwifi@intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 * BSD LICENSE 29 * 30 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation. All rights reserved. 31 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 32 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 39 * * Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * * Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in 43 * the documentation and/or other materials provided with the 44 * distribution. 45 * * Neither the name Intel Corporation nor the names of its 46 * contributors may be used to endorse or promote products derived 47 * from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 * 61 *****************************************************************************/ 62 #include <net/mac80211.h> 63 64 #include "iwl-debug.h" 65 #include "iwl-io.h" 66 #include "iwl-prph.h" 67 #include "iwl-csr.h" 68 #include "mvm.h" 69 #include "fw/api/rs.h" 70 #include "fw/img.h" 71 72 /* 73 * Will return 0 even if the cmd failed when RFKILL is asserted unless 74 * CMD_WANT_SKB is set in cmd->flags. 75 */ 76 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 77 { 78 int ret; 79 80 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 81 if (WARN_ON(mvm->d3_test_active)) 82 return -EIO; 83 #endif 84 85 /* 86 * Synchronous commands from this op-mode must hold 87 * the mutex, this ensures we don't try to send two 88 * (or more) synchronous commands at a time. 89 */ 90 if (!(cmd->flags & CMD_ASYNC)) 91 lockdep_assert_held(&mvm->mutex); 92 93 ret = iwl_trans_send_cmd(mvm->trans, cmd); 94 95 /* 96 * If the caller wants the SKB, then don't hide any problems, the 97 * caller might access the response buffer which will be NULL if 98 * the command failed. 99 */ 100 if (cmd->flags & CMD_WANT_SKB) 101 return ret; 102 103 /* Silently ignore failures if RFKILL is asserted */ 104 if (!ret || ret == -ERFKILL) 105 return 0; 106 return ret; 107 } 108 109 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 110 u32 flags, u16 len, const void *data) 111 { 112 struct iwl_host_cmd cmd = { 113 .id = id, 114 .len = { len, }, 115 .data = { data, }, 116 .flags = flags, 117 }; 118 119 return iwl_mvm_send_cmd(mvm, &cmd); 120 } 121 122 /* 123 * We assume that the caller set the status to the success value 124 */ 125 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 126 u32 *status) 127 { 128 struct iwl_rx_packet *pkt; 129 struct iwl_cmd_response *resp; 130 int ret, resp_len; 131 132 lockdep_assert_held(&mvm->mutex); 133 134 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 135 if (WARN_ON(mvm->d3_test_active)) 136 return -EIO; 137 #endif 138 139 /* 140 * Only synchronous commands can wait for status, 141 * we use WANT_SKB so the caller can't. 142 */ 143 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 144 "cmd flags %x", cmd->flags)) 145 return -EINVAL; 146 147 cmd->flags |= CMD_WANT_SKB; 148 149 ret = iwl_trans_send_cmd(mvm->trans, cmd); 150 if (ret == -ERFKILL) { 151 /* 152 * The command failed because of RFKILL, don't update 153 * the status, leave it as success and return 0. 154 */ 155 return 0; 156 } else if (ret) { 157 return ret; 158 } 159 160 pkt = cmd->resp_pkt; 161 162 resp_len = iwl_rx_packet_payload_len(pkt); 163 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 164 ret = -EIO; 165 goto out_free_resp; 166 } 167 168 resp = (void *)pkt->data; 169 *status = le32_to_cpu(resp->status); 170 out_free_resp: 171 iwl_free_resp(cmd); 172 return ret; 173 } 174 175 /* 176 * We assume that the caller set the status to the sucess value 177 */ 178 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 179 const void *data, u32 *status) 180 { 181 struct iwl_host_cmd cmd = { 182 .id = id, 183 .len = { len, }, 184 .data = { data, }, 185 }; 186 187 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 188 } 189 190 #define IWL_DECLARE_RATE_INFO(r) \ 191 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 192 193 /* 194 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 195 */ 196 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 197 IWL_DECLARE_RATE_INFO(1), 198 IWL_DECLARE_RATE_INFO(2), 199 IWL_DECLARE_RATE_INFO(5), 200 IWL_DECLARE_RATE_INFO(11), 201 IWL_DECLARE_RATE_INFO(6), 202 IWL_DECLARE_RATE_INFO(9), 203 IWL_DECLARE_RATE_INFO(12), 204 IWL_DECLARE_RATE_INFO(18), 205 IWL_DECLARE_RATE_INFO(24), 206 IWL_DECLARE_RATE_INFO(36), 207 IWL_DECLARE_RATE_INFO(48), 208 IWL_DECLARE_RATE_INFO(54), 209 }; 210 211 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 212 enum nl80211_band band) 213 { 214 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 215 int idx; 216 int band_offset = 0; 217 218 /* Legacy rate format, search for match in table */ 219 if (band != NL80211_BAND_2GHZ) 220 band_offset = IWL_FIRST_OFDM_RATE; 221 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 222 if (fw_rate_idx_to_plcp[idx] == rate) 223 return idx - band_offset; 224 225 return -1; 226 } 227 228 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 229 { 230 /* Get PLCP rate for tx_cmd->rate_n_flags */ 231 return fw_rate_idx_to_plcp[rate_idx]; 232 } 233 234 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 235 { 236 static const u8 mac80211_ac_to_ucode_ac[] = { 237 AC_VO, 238 AC_VI, 239 AC_BE, 240 AC_BK 241 }; 242 243 return mac80211_ac_to_ucode_ac[ac]; 244 } 245 246 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 247 { 248 struct iwl_rx_packet *pkt = rxb_addr(rxb); 249 struct iwl_error_resp *err_resp = (void *)pkt->data; 250 251 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 252 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 253 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 254 le16_to_cpu(err_resp->bad_cmd_seq_num), 255 le32_to_cpu(err_resp->error_service)); 256 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 257 le64_to_cpu(err_resp->timestamp)); 258 } 259 260 /* 261 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 262 * The parameter should also be a combination of ANT_[ABC]. 263 */ 264 u8 first_antenna(u8 mask) 265 { 266 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 267 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 268 return BIT(0); 269 return BIT(ffs(mask) - 1); 270 } 271 272 /* 273 * Toggles between TX antennas to send the probe request on. 274 * Receives the bitmask of valid TX antennas and the *index* used 275 * for the last TX, and returns the next valid *index* to use. 276 * In order to set it in the tx_cmd, must do BIT(idx). 277 */ 278 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 279 { 280 u8 ind = last_idx; 281 int i; 282 283 for (i = 0; i < MAX_ANT_NUM; i++) { 284 ind = (ind + 1) % MAX_ANT_NUM; 285 if (valid & BIT(ind)) 286 return ind; 287 } 288 289 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 290 return last_idx; 291 } 292 293 /* 294 * Note: This structure is read from the device with IO accesses, 295 * and the reading already does the endian conversion. As it is 296 * read with u32-sized accesses, any members with a different size 297 * need to be ordered correctly though! 298 */ 299 struct iwl_error_event_table_v1 { 300 u32 valid; /* (nonzero) valid, (0) log is empty */ 301 u32 error_id; /* type of error */ 302 u32 pc; /* program counter */ 303 u32 blink1; /* branch link */ 304 u32 blink2; /* branch link */ 305 u32 ilink1; /* interrupt link */ 306 u32 ilink2; /* interrupt link */ 307 u32 data1; /* error-specific data */ 308 u32 data2; /* error-specific data */ 309 u32 data3; /* error-specific data */ 310 u32 bcon_time; /* beacon timer */ 311 u32 tsf_low; /* network timestamp function timer */ 312 u32 tsf_hi; /* network timestamp function timer */ 313 u32 gp1; /* GP1 timer register */ 314 u32 gp2; /* GP2 timer register */ 315 u32 gp3; /* GP3 timer register */ 316 u32 ucode_ver; /* uCode version */ 317 u32 hw_ver; /* HW Silicon version */ 318 u32 brd_ver; /* HW board version */ 319 u32 log_pc; /* log program counter */ 320 u32 frame_ptr; /* frame pointer */ 321 u32 stack_ptr; /* stack pointer */ 322 u32 hcmd; /* last host command header */ 323 u32 isr0; /* isr status register LMPM_NIC_ISR0: 324 * rxtx_flag */ 325 u32 isr1; /* isr status register LMPM_NIC_ISR1: 326 * host_flag */ 327 u32 isr2; /* isr status register LMPM_NIC_ISR2: 328 * enc_flag */ 329 u32 isr3; /* isr status register LMPM_NIC_ISR3: 330 * time_flag */ 331 u32 isr4; /* isr status register LMPM_NIC_ISR4: 332 * wico interrupt */ 333 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 334 u32 wait_event; /* wait event() caller address */ 335 u32 l2p_control; /* L2pControlField */ 336 u32 l2p_duration; /* L2pDurationField */ 337 u32 l2p_mhvalid; /* L2pMhValidBits */ 338 u32 l2p_addr_match; /* L2pAddrMatchStat */ 339 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 340 * (LMPM_PMG_SEL) */ 341 u32 u_timestamp; /* indicate when the date and time of the 342 * compilation */ 343 u32 flow_handler; /* FH read/write pointers, RX credit */ 344 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 345 346 struct iwl_error_event_table { 347 u32 valid; /* (nonzero) valid, (0) log is empty */ 348 u32 error_id; /* type of error */ 349 u32 trm_hw_status0; /* TRM HW status */ 350 u32 trm_hw_status1; /* TRM HW status */ 351 u32 blink2; /* branch link */ 352 u32 ilink1; /* interrupt link */ 353 u32 ilink2; /* interrupt link */ 354 u32 data1; /* error-specific data */ 355 u32 data2; /* error-specific data */ 356 u32 data3; /* error-specific data */ 357 u32 bcon_time; /* beacon timer */ 358 u32 tsf_low; /* network timestamp function timer */ 359 u32 tsf_hi; /* network timestamp function timer */ 360 u32 gp1; /* GP1 timer register */ 361 u32 gp2; /* GP2 timer register */ 362 u32 fw_rev_type; /* firmware revision type */ 363 u32 major; /* uCode version major */ 364 u32 minor; /* uCode version minor */ 365 u32 hw_ver; /* HW Silicon version */ 366 u32 brd_ver; /* HW board version */ 367 u32 log_pc; /* log program counter */ 368 u32 frame_ptr; /* frame pointer */ 369 u32 stack_ptr; /* stack pointer */ 370 u32 hcmd; /* last host command header */ 371 u32 isr0; /* isr status register LMPM_NIC_ISR0: 372 * rxtx_flag */ 373 u32 isr1; /* isr status register LMPM_NIC_ISR1: 374 * host_flag */ 375 u32 isr2; /* isr status register LMPM_NIC_ISR2: 376 * enc_flag */ 377 u32 isr3; /* isr status register LMPM_NIC_ISR3: 378 * time_flag */ 379 u32 isr4; /* isr status register LMPM_NIC_ISR4: 380 * wico interrupt */ 381 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 382 u32 wait_event; /* wait event() caller address */ 383 u32 l2p_control; /* L2pControlField */ 384 u32 l2p_duration; /* L2pDurationField */ 385 u32 l2p_mhvalid; /* L2pMhValidBits */ 386 u32 l2p_addr_match; /* L2pAddrMatchStat */ 387 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 388 * (LMPM_PMG_SEL) */ 389 u32 u_timestamp; /* indicate when the date and time of the 390 * compilation */ 391 u32 flow_handler; /* FH read/write pointers, RX credit */ 392 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 393 394 /* 395 * UMAC error struct - relevant starting from family 8000 chip. 396 * Note: This structure is read from the device with IO accesses, 397 * and the reading already does the endian conversion. As it is 398 * read with u32-sized accesses, any members with a different size 399 * need to be ordered correctly though! 400 */ 401 struct iwl_umac_error_event_table { 402 u32 valid; /* (nonzero) valid, (0) log is empty */ 403 u32 error_id; /* type of error */ 404 u32 blink1; /* branch link */ 405 u32 blink2; /* branch link */ 406 u32 ilink1; /* interrupt link */ 407 u32 ilink2; /* interrupt link */ 408 u32 data1; /* error-specific data */ 409 u32 data2; /* error-specific data */ 410 u32 data3; /* error-specific data */ 411 u32 umac_major; 412 u32 umac_minor; 413 u32 frame_pointer; /* core register 27*/ 414 u32 stack_pointer; /* core register 28 */ 415 u32 cmd_header; /* latest host cmd sent to UMAC */ 416 u32 nic_isr_pref; /* ISR status register */ 417 } __packed; 418 419 #define ERROR_START_OFFSET (1 * sizeof(u32)) 420 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 421 422 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 423 { 424 struct iwl_trans *trans = mvm->trans; 425 struct iwl_umac_error_event_table table; 426 u32 base = mvm->trans->dbg.umac_error_event_table; 427 428 if (!base && 429 !(mvm->trans->dbg.error_event_table_tlv_status & 430 IWL_ERROR_EVENT_TABLE_UMAC)) 431 return; 432 433 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 434 435 if (table.valid) 436 mvm->fwrt.dump.umac_err_id = table.error_id; 437 438 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 439 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 440 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 441 mvm->status, table.valid); 442 } 443 444 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 445 iwl_fw_lookup_assert_desc(table.error_id)); 446 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 447 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 448 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 449 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 450 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 451 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 452 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 453 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 454 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 455 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 456 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 457 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 458 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 459 } 460 461 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num) 462 { 463 struct iwl_trans *trans = mvm->trans; 464 struct iwl_error_event_table table; 465 u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num]; 466 467 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 468 if (!base) 469 base = mvm->fw->init_errlog_ptr; 470 } else { 471 if (!base) 472 base = mvm->fw->inst_errlog_ptr; 473 } 474 475 if (base < 0x400000) { 476 IWL_ERR(mvm, 477 "Not valid error log pointer 0x%08X for %s uCode\n", 478 base, 479 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 480 ? "Init" : "RT"); 481 return; 482 } 483 484 /* check if there is a HW error */ 485 val = iwl_trans_read_mem32(trans, base); 486 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 487 int err; 488 489 IWL_ERR(trans, "HW error, resetting before reading\n"); 490 491 /* reset the device */ 492 iwl_trans_sw_reset(trans); 493 494 err = iwl_finish_nic_init(trans, trans->trans_cfg); 495 if (err) 496 return; 497 } 498 499 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 500 501 if (table.valid) 502 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id; 503 504 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 505 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 506 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 507 mvm->status, table.valid); 508 } 509 510 /* Do not change this output - scripts rely on it */ 511 512 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 513 514 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 515 iwl_fw_lookup_assert_desc(table.error_id)); 516 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 517 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 518 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 519 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 520 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 521 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 522 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 523 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 524 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 525 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 526 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 527 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 528 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 529 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 530 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 531 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 532 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 533 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 534 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 535 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 536 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 537 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 538 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 539 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 540 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 541 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 542 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 543 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 544 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 545 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 546 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 547 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 548 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 549 } 550 551 static void iwl_mvm_dump_iml_error_log(struct iwl_mvm *mvm) 552 { 553 struct iwl_trans *trans = mvm->trans; 554 u32 error; 555 556 error = iwl_read_umac_prph(trans, UMAG_SB_CPU_2_STATUS); 557 558 IWL_ERR(trans, "IML/ROM dump:\n"); 559 560 if (error & 0xFFFF0000) 561 IWL_ERR(trans, "IML/ROM SYSASSERT:\n"); 562 563 IWL_ERR(mvm, "0x%08X | IML/ROM error/state\n", error); 564 IWL_ERR(mvm, "0x%08X | IML/ROM data1\n", 565 iwl_read_umac_prph(trans, UMAG_SB_CPU_1_STATUS)); 566 } 567 568 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 569 { 570 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 571 IWL_ERR(mvm, 572 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 573 return; 574 } 575 576 iwl_mvm_dump_lmac_error_log(mvm, 0); 577 578 if (mvm->trans->dbg.lmac_error_event_table[1]) 579 iwl_mvm_dump_lmac_error_log(mvm, 1); 580 581 iwl_mvm_dump_umac_error_log(mvm); 582 583 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) 584 iwl_mvm_dump_iml_error_log(mvm); 585 586 iwl_fw_error_print_fseq_regs(&mvm->fwrt); 587 } 588 589 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 590 int tid, int frame_limit, u16 ssn) 591 { 592 struct iwl_scd_txq_cfg_cmd cmd = { 593 .scd_queue = queue, 594 .action = SCD_CFG_ENABLE_QUEUE, 595 .window = frame_limit, 596 .sta_id = sta_id, 597 .ssn = cpu_to_le16(ssn), 598 .tx_fifo = fifo, 599 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 600 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 601 .tid = tid, 602 }; 603 int ret; 604 605 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 606 return -EINVAL; 607 608 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 609 "Trying to reconfig unallocated queue %d\n", queue)) 610 return -ENXIO; 611 612 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 613 614 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 615 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 616 queue, fifo, ret); 617 618 return ret; 619 } 620 621 /** 622 * iwl_mvm_send_lq_cmd() - Send link quality command 623 * @mvm: Driver data. 624 * @lq: Link quality command to send. 625 * 626 * The link quality command is sent as the last step of station creation. 627 * This is the special case in which init is set and we call a callback in 628 * this case to clear the state indicating that station creation is in 629 * progress. 630 */ 631 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 632 { 633 struct iwl_host_cmd cmd = { 634 .id = LQ_CMD, 635 .len = { sizeof(struct iwl_lq_cmd), }, 636 .flags = CMD_ASYNC, 637 .data = { lq, }, 638 }; 639 640 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 641 iwl_mvm_has_tlc_offload(mvm))) 642 return -EINVAL; 643 644 return iwl_mvm_send_cmd(mvm, &cmd); 645 } 646 647 /** 648 * iwl_mvm_update_smps - Get a request to change the SMPS mode 649 * @mvm: Driver data. 650 * @vif: Pointer to the ieee80211_vif structure 651 * @req_type: The part of the driver who call for a change. 652 * @smps_request: The request to change the SMPS mode. 653 * 654 * Get a requst to change the SMPS mode, 655 * and change it according to all other requests in the driver. 656 */ 657 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 658 enum iwl_mvm_smps_type_request req_type, 659 enum ieee80211_smps_mode smps_request) 660 { 661 struct iwl_mvm_vif *mvmvif; 662 enum ieee80211_smps_mode smps_mode; 663 int i; 664 665 lockdep_assert_held(&mvm->mutex); 666 667 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 668 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 669 return; 670 671 if (vif->type == NL80211_IFTYPE_AP) 672 smps_mode = IEEE80211_SMPS_OFF; 673 else 674 smps_mode = IEEE80211_SMPS_AUTOMATIC; 675 676 mvmvif = iwl_mvm_vif_from_mac80211(vif); 677 mvmvif->smps_requests[req_type] = smps_request; 678 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 679 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 680 smps_mode = IEEE80211_SMPS_STATIC; 681 break; 682 } 683 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 684 smps_mode = IEEE80211_SMPS_DYNAMIC; 685 } 686 687 ieee80211_request_smps(vif, smps_mode); 688 } 689 690 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 691 { 692 struct iwl_statistics_cmd scmd = { 693 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 694 }; 695 struct iwl_host_cmd cmd = { 696 .id = STATISTICS_CMD, 697 .len[0] = sizeof(scmd), 698 .data[0] = &scmd, 699 .flags = CMD_WANT_SKB, 700 }; 701 int ret; 702 703 ret = iwl_mvm_send_cmd(mvm, &cmd); 704 if (ret) 705 return ret; 706 707 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 708 iwl_free_resp(&cmd); 709 710 if (clear) 711 iwl_mvm_accu_radio_stats(mvm); 712 713 return 0; 714 } 715 716 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 717 { 718 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 719 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 720 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 721 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 722 } 723 724 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 725 struct ieee80211_vif *vif) 726 { 727 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 728 bool *result = _data; 729 int i; 730 731 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 732 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 733 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 734 *result = false; 735 } 736 } 737 738 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 739 { 740 bool result = true; 741 742 lockdep_assert_held(&mvm->mutex); 743 744 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 745 return false; 746 747 if (mvm->cfg->rx_with_siso_diversity) 748 return false; 749 750 ieee80211_iterate_active_interfaces_atomic( 751 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 752 iwl_mvm_diversity_iter, &result); 753 754 return result; 755 } 756 757 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 758 bool low_latency, u16 mac_id) 759 { 760 struct iwl_mac_low_latency_cmd cmd = { 761 .mac_id = cpu_to_le32(mac_id) 762 }; 763 764 if (!fw_has_capa(&mvm->fw->ucode_capa, 765 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 766 return; 767 768 if (low_latency) { 769 /* currently we don't care about the direction */ 770 cmd.low_latency_rx = 1; 771 cmd.low_latency_tx = 1; 772 } 773 774 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD, 775 MAC_CONF_GROUP, 0), 776 0, sizeof(cmd), &cmd)) 777 IWL_ERR(mvm, "Failed to send low latency command\n"); 778 } 779 780 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 781 bool low_latency, 782 enum iwl_mvm_low_latency_cause cause) 783 { 784 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 785 int res; 786 bool prev; 787 788 lockdep_assert_held(&mvm->mutex); 789 790 prev = iwl_mvm_vif_low_latency(mvmvif); 791 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 792 793 low_latency = iwl_mvm_vif_low_latency(mvmvif); 794 795 if (low_latency == prev) 796 return 0; 797 798 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 799 800 res = iwl_mvm_update_quotas(mvm, false, NULL); 801 if (res) 802 return res; 803 804 iwl_mvm_bt_coex_vif_change(mvm); 805 806 return iwl_mvm_power_update_mac(mvm); 807 } 808 809 struct iwl_mvm_low_latency_iter { 810 bool result; 811 bool result_per_band[NUM_NL80211_BANDS]; 812 }; 813 814 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 815 { 816 struct iwl_mvm_low_latency_iter *result = _data; 817 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 818 enum nl80211_band band; 819 820 if (iwl_mvm_vif_low_latency(mvmvif)) { 821 result->result = true; 822 823 if (!mvmvif->phy_ctxt) 824 return; 825 826 band = mvmvif->phy_ctxt->channel->band; 827 result->result_per_band[band] = true; 828 } 829 } 830 831 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 832 { 833 struct iwl_mvm_low_latency_iter data = {}; 834 835 ieee80211_iterate_active_interfaces_atomic( 836 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 837 iwl_mvm_ll_iter, &data); 838 839 return data.result; 840 } 841 842 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 843 { 844 struct iwl_mvm_low_latency_iter data = {}; 845 846 ieee80211_iterate_active_interfaces_atomic( 847 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 848 iwl_mvm_ll_iter, &data); 849 850 return data.result_per_band[band]; 851 } 852 853 struct iwl_bss_iter_data { 854 struct ieee80211_vif *vif; 855 bool error; 856 }; 857 858 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 859 struct ieee80211_vif *vif) 860 { 861 struct iwl_bss_iter_data *data = _data; 862 863 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 864 return; 865 866 if (data->vif) { 867 data->error = true; 868 return; 869 } 870 871 data->vif = vif; 872 } 873 874 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 875 { 876 struct iwl_bss_iter_data bss_iter_data = {}; 877 878 ieee80211_iterate_active_interfaces_atomic( 879 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 880 iwl_mvm_bss_iface_iterator, &bss_iter_data); 881 882 if (bss_iter_data.error) { 883 IWL_ERR(mvm, "More than one managed interface active!\n"); 884 return ERR_PTR(-EINVAL); 885 } 886 887 return bss_iter_data.vif; 888 } 889 890 struct iwl_sta_iter_data { 891 bool assoc; 892 }; 893 894 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 895 struct ieee80211_vif *vif) 896 { 897 struct iwl_sta_iter_data *data = _data; 898 899 if (vif->type != NL80211_IFTYPE_STATION) 900 return; 901 902 if (vif->bss_conf.assoc) 903 data->assoc = true; 904 } 905 906 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 907 { 908 struct iwl_sta_iter_data data = { 909 .assoc = false, 910 }; 911 912 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 913 IEEE80211_IFACE_ITER_NORMAL, 914 iwl_mvm_sta_iface_iterator, 915 &data); 916 return data.assoc; 917 } 918 919 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 920 struct ieee80211_vif *vif, 921 bool tdls, bool cmd_q) 922 { 923 struct iwl_fw_dbg_trigger_tlv *trigger; 924 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 925 unsigned int default_timeout = cmd_q ? 926 IWL_DEF_WD_TIMEOUT : 927 mvm->trans->trans_cfg->base_params->wd_timeout; 928 929 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 930 /* 931 * We can't know when the station is asleep or awake, so we 932 * must disable the queue hang detection. 933 */ 934 if (fw_has_capa(&mvm->fw->ucode_capa, 935 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 936 vif && vif->type == NL80211_IFTYPE_AP) 937 return IWL_WATCHDOG_DISABLED; 938 return default_timeout; 939 } 940 941 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 942 txq_timer = (void *)trigger->data; 943 944 if (tdls) 945 return le32_to_cpu(txq_timer->tdls); 946 947 if (cmd_q) 948 return le32_to_cpu(txq_timer->command_queue); 949 950 if (WARN_ON(!vif)) 951 return default_timeout; 952 953 switch (ieee80211_vif_type_p2p(vif)) { 954 case NL80211_IFTYPE_ADHOC: 955 return le32_to_cpu(txq_timer->ibss); 956 case NL80211_IFTYPE_STATION: 957 return le32_to_cpu(txq_timer->bss); 958 case NL80211_IFTYPE_AP: 959 return le32_to_cpu(txq_timer->softap); 960 case NL80211_IFTYPE_P2P_CLIENT: 961 return le32_to_cpu(txq_timer->p2p_client); 962 case NL80211_IFTYPE_P2P_GO: 963 return le32_to_cpu(txq_timer->p2p_go); 964 case NL80211_IFTYPE_P2P_DEVICE: 965 return le32_to_cpu(txq_timer->p2p_device); 966 case NL80211_IFTYPE_MONITOR: 967 return default_timeout; 968 default: 969 WARN_ON(1); 970 return mvm->trans->trans_cfg->base_params->wd_timeout; 971 } 972 } 973 974 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 975 const char *errmsg) 976 { 977 struct iwl_fw_dbg_trigger_tlv *trig; 978 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 979 980 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 981 FW_DBG_TRIGGER_MLME); 982 if (!trig) 983 goto out; 984 985 trig_mlme = (void *)trig->data; 986 987 if (trig_mlme->stop_connection_loss && 988 --trig_mlme->stop_connection_loss) 989 goto out; 990 991 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 992 993 out: 994 ieee80211_connection_loss(vif); 995 } 996 997 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 998 struct ieee80211_vif *vif, 999 const struct ieee80211_sta *sta, 1000 u16 tid) 1001 { 1002 struct iwl_fw_dbg_trigger_tlv *trig; 1003 struct iwl_fw_dbg_trigger_ba *ba_trig; 1004 1005 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1006 FW_DBG_TRIGGER_BA); 1007 if (!trig) 1008 return; 1009 1010 ba_trig = (void *)trig->data; 1011 1012 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1013 return; 1014 1015 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1016 "Frame from %pM timed out, tid %d", 1017 sta->addr, tid); 1018 } 1019 1020 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1021 { 1022 if (!elapsed) 1023 return 0; 1024 1025 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1026 } 1027 1028 static enum iwl_mvm_traffic_load 1029 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1030 { 1031 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1032 1033 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1034 return IWL_MVM_TRAFFIC_HIGH; 1035 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1036 return IWL_MVM_TRAFFIC_MEDIUM; 1037 1038 return IWL_MVM_TRAFFIC_LOW; 1039 } 1040 1041 struct iwl_mvm_tcm_iter_data { 1042 struct iwl_mvm *mvm; 1043 bool any_sent; 1044 }; 1045 1046 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1047 { 1048 struct iwl_mvm_tcm_iter_data *data = _data; 1049 struct iwl_mvm *mvm = data->mvm; 1050 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1051 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1052 1053 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1054 return; 1055 1056 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1057 1058 if (!mvm->tcm.result.change[mvmvif->id] && 1059 prev == low_latency) { 1060 iwl_mvm_update_quotas(mvm, false, NULL); 1061 return; 1062 } 1063 1064 if (prev != low_latency) { 1065 /* this sends traffic load and updates quota as well */ 1066 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1067 LOW_LATENCY_TRAFFIC); 1068 } else { 1069 iwl_mvm_update_quotas(mvm, false, NULL); 1070 } 1071 1072 data->any_sent = true; 1073 } 1074 1075 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1076 { 1077 struct iwl_mvm_tcm_iter_data data = { 1078 .mvm = mvm, 1079 .any_sent = false, 1080 }; 1081 1082 mutex_lock(&mvm->mutex); 1083 1084 ieee80211_iterate_active_interfaces( 1085 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1086 iwl_mvm_tcm_iter, &data); 1087 1088 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1089 iwl_mvm_config_scan(mvm); 1090 1091 mutex_unlock(&mvm->mutex); 1092 } 1093 1094 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1095 { 1096 struct iwl_mvm *mvm; 1097 struct iwl_mvm_vif *mvmvif; 1098 struct ieee80211_vif *vif; 1099 1100 mvmvif = container_of(wk, struct iwl_mvm_vif, 1101 uapsd_nonagg_detected_wk.work); 1102 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1103 mvm = mvmvif->mvm; 1104 1105 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1106 return; 1107 1108 /* remember that this AP is broken */ 1109 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1110 vif->bss_conf.bssid, ETH_ALEN); 1111 mvm->uapsd_noagg_bssid_write_idx++; 1112 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1113 mvm->uapsd_noagg_bssid_write_idx = 0; 1114 1115 iwl_mvm_connection_loss(mvm, vif, 1116 "AP isn't using AMPDU with uAPSD enabled"); 1117 } 1118 1119 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 1120 struct ieee80211_vif *vif) 1121 { 1122 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1123 1124 if (vif->type != NL80211_IFTYPE_STATION) 1125 return; 1126 1127 if (!vif->bss_conf.assoc) 1128 return; 1129 1130 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1131 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1132 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1133 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1134 return; 1135 1136 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 1137 return; 1138 1139 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 1140 IWL_INFO(mvm, 1141 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1142 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1143 } 1144 1145 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1146 unsigned int elapsed, 1147 int mac) 1148 { 1149 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1150 u64 tpt; 1151 unsigned long rate; 1152 struct ieee80211_vif *vif; 1153 1154 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1155 1156 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1157 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1158 return; 1159 1160 if (iwl_mvm_has_new_rx_api(mvm)) { 1161 tpt = 8 * bytes; /* kbps */ 1162 do_div(tpt, elapsed); 1163 rate *= 1000; /* kbps */ 1164 if (tpt < 22 * rate / 100) 1165 return; 1166 } else { 1167 /* 1168 * the rate here is actually the threshold, in 100Kbps units, 1169 * so do the needed conversion from bytes to 100Kbps: 1170 * 100kb = bits / (100 * 1000), 1171 * 100kbps = 100kb / (msecs / 1000) == 1172 * (bits / (100 * 1000)) / (msecs / 1000) == 1173 * bits / (100 * msecs) 1174 */ 1175 tpt = (8 * bytes); 1176 do_div(tpt, elapsed * 100); 1177 if (tpt < rate) 1178 return; 1179 } 1180 1181 rcu_read_lock(); 1182 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 1183 if (vif) 1184 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 1185 rcu_read_unlock(); 1186 } 1187 1188 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1189 struct ieee80211_vif *vif) 1190 { 1191 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1192 u32 *band = _data; 1193 1194 if (!mvmvif->phy_ctxt) 1195 return; 1196 1197 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1198 } 1199 1200 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1201 unsigned long ts, 1202 bool handle_uapsd) 1203 { 1204 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1205 unsigned int uapsd_elapsed = 1206 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1207 u32 total_airtime = 0; 1208 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1209 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1210 int ac, mac, i; 1211 bool low_latency = false; 1212 enum iwl_mvm_traffic_load load, band_load; 1213 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1214 1215 if (handle_ll) 1216 mvm->tcm.ll_ts = ts; 1217 if (handle_uapsd) 1218 mvm->tcm.uapsd_nonagg_ts = ts; 1219 1220 mvm->tcm.result.elapsed = elapsed; 1221 1222 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1223 IEEE80211_IFACE_ITER_NORMAL, 1224 iwl_mvm_tcm_iterator, 1225 &band); 1226 1227 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1228 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1229 u32 vo_vi_pkts = 0; 1230 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1231 1232 total_airtime += airtime; 1233 band_airtime[band[mac]] += airtime; 1234 1235 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1236 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1237 mvm->tcm.result.load[mac] = load; 1238 mvm->tcm.result.airtime[mac] = airtime; 1239 1240 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1241 vo_vi_pkts += mdata->rx.pkts[ac] + 1242 mdata->tx.pkts[ac]; 1243 1244 /* enable immediately with enough packets but defer disabling */ 1245 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1246 mvm->tcm.result.low_latency[mac] = true; 1247 else if (handle_ll) 1248 mvm->tcm.result.low_latency[mac] = false; 1249 1250 if (handle_ll) { 1251 /* clear old data */ 1252 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1253 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1254 } 1255 low_latency |= mvm->tcm.result.low_latency[mac]; 1256 1257 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1258 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1259 mac); 1260 /* clear old data */ 1261 if (handle_uapsd) 1262 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1263 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1264 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1265 } 1266 1267 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1268 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1269 mvm->tcm.result.global_load = load; 1270 1271 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1272 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1273 mvm->tcm.result.band_load[i] = band_load; 1274 } 1275 1276 /* 1277 * If the current load isn't low we need to force re-evaluation 1278 * in the TCM period, so that we can return to low load if there 1279 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1280 * triggered by traffic). 1281 */ 1282 if (load != IWL_MVM_TRAFFIC_LOW) 1283 return MVM_TCM_PERIOD; 1284 /* 1285 * If low-latency is active we need to force re-evaluation after 1286 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1287 * when there's no traffic at all. 1288 */ 1289 if (low_latency) 1290 return MVM_LL_PERIOD; 1291 /* 1292 * Otherwise, we don't need to run the work struct because we're 1293 * in the default "idle" state - traffic indication is low (which 1294 * also covers the "no traffic" case) and low-latency is disabled 1295 * so there's no state that may need to be disabled when there's 1296 * no traffic at all. 1297 * 1298 * Note that this has no impact on the regular scheduling of the 1299 * updates triggered by traffic - those happen whenever one of the 1300 * two timeouts expire (if there's traffic at all.) 1301 */ 1302 return 0; 1303 } 1304 1305 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1306 { 1307 unsigned long ts = jiffies; 1308 bool handle_uapsd = 1309 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1310 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1311 1312 spin_lock(&mvm->tcm.lock); 1313 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1314 spin_unlock(&mvm->tcm.lock); 1315 return; 1316 } 1317 spin_unlock(&mvm->tcm.lock); 1318 1319 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1320 mutex_lock(&mvm->mutex); 1321 if (iwl_mvm_request_statistics(mvm, true)) 1322 handle_uapsd = false; 1323 mutex_unlock(&mvm->mutex); 1324 } 1325 1326 spin_lock(&mvm->tcm.lock); 1327 /* re-check if somebody else won the recheck race */ 1328 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1329 /* calculate statistics */ 1330 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1331 handle_uapsd); 1332 1333 /* the memset needs to be visible before the timestamp */ 1334 smp_mb(); 1335 mvm->tcm.ts = ts; 1336 if (work_delay) 1337 schedule_delayed_work(&mvm->tcm.work, work_delay); 1338 } 1339 spin_unlock(&mvm->tcm.lock); 1340 1341 iwl_mvm_tcm_results(mvm); 1342 } 1343 1344 void iwl_mvm_tcm_work(struct work_struct *work) 1345 { 1346 struct delayed_work *delayed_work = to_delayed_work(work); 1347 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1348 tcm.work); 1349 1350 iwl_mvm_recalc_tcm(mvm); 1351 } 1352 1353 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1354 { 1355 spin_lock_bh(&mvm->tcm.lock); 1356 mvm->tcm.paused = true; 1357 spin_unlock_bh(&mvm->tcm.lock); 1358 if (with_cancel) 1359 cancel_delayed_work_sync(&mvm->tcm.work); 1360 } 1361 1362 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1363 { 1364 int mac; 1365 bool low_latency = false; 1366 1367 spin_lock_bh(&mvm->tcm.lock); 1368 mvm->tcm.ts = jiffies; 1369 mvm->tcm.ll_ts = jiffies; 1370 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1371 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1372 1373 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1374 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1375 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1376 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1377 1378 if (mvm->tcm.result.low_latency[mac]) 1379 low_latency = true; 1380 } 1381 /* The TCM data needs to be reset before "paused" flag changes */ 1382 smp_mb(); 1383 mvm->tcm.paused = false; 1384 1385 /* 1386 * if the current load is not low or low latency is active, force 1387 * re-evaluation to cover the case of no traffic. 1388 */ 1389 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1390 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1391 else if (low_latency) 1392 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1393 1394 spin_unlock_bh(&mvm->tcm.lock); 1395 } 1396 1397 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1398 { 1399 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1400 1401 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1402 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1403 } 1404 1405 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1406 { 1407 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1408 1409 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1410 } 1411 1412 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1413 { 1414 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1415 1416 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1417 mvm->trans->cfg->gp2_reg_addr) 1418 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1419 1420 return iwl_read_prph(mvm->trans, reg_addr); 1421 } 1422 1423 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1424 { 1425 bool ps_disabled; 1426 1427 lockdep_assert_held(&mvm->mutex); 1428 1429 /* Disable power save when reading GP2 */ 1430 ps_disabled = mvm->ps_disabled; 1431 if (!ps_disabled) { 1432 mvm->ps_disabled = true; 1433 iwl_mvm_power_update_device(mvm); 1434 } 1435 1436 *gp2 = iwl_mvm_get_systime(mvm); 1437 *boottime = ktime_get_boottime_ns(); 1438 1439 if (!ps_disabled) { 1440 mvm->ps_disabled = ps_disabled; 1441 iwl_mvm_power_update_device(mvm); 1442 } 1443 } 1444