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 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 33 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <net/mac80211.h> 65 66 #include "iwl-debug.h" 67 #include "iwl-io.h" 68 #include "iwl-prph.h" 69 #include "iwl-csr.h" 70 #include "mvm.h" 71 #include "fw/api/rs.h" 72 73 /* 74 * Will return 0 even if the cmd failed when RFKILL is asserted unless 75 * CMD_WANT_SKB is set in cmd->flags. 76 */ 77 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 78 { 79 int ret; 80 81 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 82 if (WARN_ON(mvm->d3_test_active)) 83 return -EIO; 84 #endif 85 86 /* 87 * Synchronous commands from this op-mode must hold 88 * the mutex, this ensures we don't try to send two 89 * (or more) synchronous commands at a time. 90 */ 91 if (!(cmd->flags & CMD_ASYNC)) { 92 lockdep_assert_held(&mvm->mutex); 93 if (!(cmd->flags & CMD_SEND_IN_IDLE)) 94 iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD); 95 } 96 97 ret = iwl_trans_send_cmd(mvm->trans, cmd); 98 99 if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE))) 100 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD); 101 102 /* 103 * If the caller wants the SKB, then don't hide any problems, the 104 * caller might access the response buffer which will be NULL if 105 * the command failed. 106 */ 107 if (cmd->flags & CMD_WANT_SKB) 108 return ret; 109 110 /* Silently ignore failures if RFKILL is asserted */ 111 if (!ret || ret == -ERFKILL) 112 return 0; 113 return ret; 114 } 115 116 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 117 u32 flags, u16 len, const void *data) 118 { 119 struct iwl_host_cmd cmd = { 120 .id = id, 121 .len = { len, }, 122 .data = { data, }, 123 .flags = flags, 124 }; 125 126 return iwl_mvm_send_cmd(mvm, &cmd); 127 } 128 129 /* 130 * We assume that the caller set the status to the success value 131 */ 132 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 133 u32 *status) 134 { 135 struct iwl_rx_packet *pkt; 136 struct iwl_cmd_response *resp; 137 int ret, resp_len; 138 139 lockdep_assert_held(&mvm->mutex); 140 141 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 142 if (WARN_ON(mvm->d3_test_active)) 143 return -EIO; 144 #endif 145 146 /* 147 * Only synchronous commands can wait for status, 148 * we use WANT_SKB so the caller can't. 149 */ 150 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 151 "cmd flags %x", cmd->flags)) 152 return -EINVAL; 153 154 cmd->flags |= CMD_WANT_SKB; 155 156 ret = iwl_trans_send_cmd(mvm->trans, cmd); 157 if (ret == -ERFKILL) { 158 /* 159 * The command failed because of RFKILL, don't update 160 * the status, leave it as success and return 0. 161 */ 162 return 0; 163 } else if (ret) { 164 return ret; 165 } 166 167 pkt = cmd->resp_pkt; 168 169 resp_len = iwl_rx_packet_payload_len(pkt); 170 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 171 ret = -EIO; 172 goto out_free_resp; 173 } 174 175 resp = (void *)pkt->data; 176 *status = le32_to_cpu(resp->status); 177 out_free_resp: 178 iwl_free_resp(cmd); 179 return ret; 180 } 181 182 /* 183 * We assume that the caller set the status to the sucess value 184 */ 185 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 186 const void *data, u32 *status) 187 { 188 struct iwl_host_cmd cmd = { 189 .id = id, 190 .len = { len, }, 191 .data = { data, }, 192 }; 193 194 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 195 } 196 197 #define IWL_DECLARE_RATE_INFO(r) \ 198 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 199 200 /* 201 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 202 */ 203 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 204 IWL_DECLARE_RATE_INFO(1), 205 IWL_DECLARE_RATE_INFO(2), 206 IWL_DECLARE_RATE_INFO(5), 207 IWL_DECLARE_RATE_INFO(11), 208 IWL_DECLARE_RATE_INFO(6), 209 IWL_DECLARE_RATE_INFO(9), 210 IWL_DECLARE_RATE_INFO(12), 211 IWL_DECLARE_RATE_INFO(18), 212 IWL_DECLARE_RATE_INFO(24), 213 IWL_DECLARE_RATE_INFO(36), 214 IWL_DECLARE_RATE_INFO(48), 215 IWL_DECLARE_RATE_INFO(54), 216 }; 217 218 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 219 enum nl80211_band band) 220 { 221 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 222 int idx; 223 int band_offset = 0; 224 225 /* Legacy rate format, search for match in table */ 226 if (band == NL80211_BAND_5GHZ) 227 band_offset = IWL_FIRST_OFDM_RATE; 228 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 229 if (fw_rate_idx_to_plcp[idx] == rate) 230 return idx - band_offset; 231 232 return -1; 233 } 234 235 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 236 { 237 /* Get PLCP rate for tx_cmd->rate_n_flags */ 238 return fw_rate_idx_to_plcp[rate_idx]; 239 } 240 241 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 242 { 243 struct iwl_rx_packet *pkt = rxb_addr(rxb); 244 struct iwl_error_resp *err_resp = (void *)pkt->data; 245 246 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 247 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 248 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 249 le16_to_cpu(err_resp->bad_cmd_seq_num), 250 le32_to_cpu(err_resp->error_service)); 251 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 252 le64_to_cpu(err_resp->timestamp)); 253 } 254 255 /* 256 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 257 * The parameter should also be a combination of ANT_[ABC]. 258 */ 259 u8 first_antenna(u8 mask) 260 { 261 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 262 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 263 return BIT(0); 264 return BIT(ffs(mask) - 1); 265 } 266 267 /* 268 * Toggles between TX antennas to send the probe request on. 269 * Receives the bitmask of valid TX antennas and the *index* used 270 * for the last TX, and returns the next valid *index* to use. 271 * In order to set it in the tx_cmd, must do BIT(idx). 272 */ 273 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 274 { 275 u8 ind = last_idx; 276 int i; 277 278 for (i = 0; i < MAX_ANT_NUM; i++) { 279 ind = (ind + 1) % MAX_ANT_NUM; 280 if (valid & BIT(ind)) 281 return ind; 282 } 283 284 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 285 return last_idx; 286 } 287 288 #define FW_SYSASSERT_CPU_MASK 0xf0000000 289 static const struct { 290 const char *name; 291 u8 num; 292 } advanced_lookup[] = { 293 { "NMI_INTERRUPT_WDG", 0x34 }, 294 { "SYSASSERT", 0x35 }, 295 { "UCODE_VERSION_MISMATCH", 0x37 }, 296 { "BAD_COMMAND", 0x38 }, 297 { "BAD_COMMAND", 0x39 }, 298 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 299 { "FATAL_ERROR", 0x3D }, 300 { "NMI_TRM_HW_ERR", 0x46 }, 301 { "NMI_INTERRUPT_TRM", 0x4C }, 302 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 303 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 304 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 305 { "NMI_INTERRUPT_HOST", 0x66 }, 306 { "NMI_INTERRUPT_LMAC_FATAL", 0x70 }, 307 { "NMI_INTERRUPT_UMAC_FATAL", 0x71 }, 308 { "NMI_INTERRUPT_OTHER_LMAC_FATAL", 0x73 }, 309 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 310 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 311 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 312 { "ADVANCED_SYSASSERT", 0 }, 313 }; 314 315 static const char *desc_lookup(u32 num) 316 { 317 int i; 318 319 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) 320 if (advanced_lookup[i].num == (num & ~FW_SYSASSERT_CPU_MASK)) 321 return advanced_lookup[i].name; 322 323 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ 324 return advanced_lookup[i].name; 325 } 326 327 /* 328 * Note: This structure is read from the device with IO accesses, 329 * and the reading already does the endian conversion. As it is 330 * read with u32-sized accesses, any members with a different size 331 * need to be ordered correctly though! 332 */ 333 struct iwl_error_event_table_v1 { 334 u32 valid; /* (nonzero) valid, (0) log is empty */ 335 u32 error_id; /* type of error */ 336 u32 pc; /* program counter */ 337 u32 blink1; /* branch link */ 338 u32 blink2; /* branch link */ 339 u32 ilink1; /* interrupt link */ 340 u32 ilink2; /* interrupt link */ 341 u32 data1; /* error-specific data */ 342 u32 data2; /* error-specific data */ 343 u32 data3; /* error-specific data */ 344 u32 bcon_time; /* beacon timer */ 345 u32 tsf_low; /* network timestamp function timer */ 346 u32 tsf_hi; /* network timestamp function timer */ 347 u32 gp1; /* GP1 timer register */ 348 u32 gp2; /* GP2 timer register */ 349 u32 gp3; /* GP3 timer register */ 350 u32 ucode_ver; /* uCode version */ 351 u32 hw_ver; /* HW Silicon version */ 352 u32 brd_ver; /* HW board version */ 353 u32 log_pc; /* log program counter */ 354 u32 frame_ptr; /* frame pointer */ 355 u32 stack_ptr; /* stack pointer */ 356 u32 hcmd; /* last host command header */ 357 u32 isr0; /* isr status register LMPM_NIC_ISR0: 358 * rxtx_flag */ 359 u32 isr1; /* isr status register LMPM_NIC_ISR1: 360 * host_flag */ 361 u32 isr2; /* isr status register LMPM_NIC_ISR2: 362 * enc_flag */ 363 u32 isr3; /* isr status register LMPM_NIC_ISR3: 364 * time_flag */ 365 u32 isr4; /* isr status register LMPM_NIC_ISR4: 366 * wico interrupt */ 367 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 368 u32 wait_event; /* wait event() caller address */ 369 u32 l2p_control; /* L2pControlField */ 370 u32 l2p_duration; /* L2pDurationField */ 371 u32 l2p_mhvalid; /* L2pMhValidBits */ 372 u32 l2p_addr_match; /* L2pAddrMatchStat */ 373 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 374 * (LMPM_PMG_SEL) */ 375 u32 u_timestamp; /* indicate when the date and time of the 376 * compilation */ 377 u32 flow_handler; /* FH read/write pointers, RX credit */ 378 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 379 380 struct iwl_error_event_table { 381 u32 valid; /* (nonzero) valid, (0) log is empty */ 382 u32 error_id; /* type of error */ 383 u32 trm_hw_status0; /* TRM HW status */ 384 u32 trm_hw_status1; /* TRM HW status */ 385 u32 blink2; /* branch link */ 386 u32 ilink1; /* interrupt link */ 387 u32 ilink2; /* interrupt link */ 388 u32 data1; /* error-specific data */ 389 u32 data2; /* error-specific data */ 390 u32 data3; /* error-specific data */ 391 u32 bcon_time; /* beacon timer */ 392 u32 tsf_low; /* network timestamp function timer */ 393 u32 tsf_hi; /* network timestamp function timer */ 394 u32 gp1; /* GP1 timer register */ 395 u32 gp2; /* GP2 timer register */ 396 u32 fw_rev_type; /* firmware revision type */ 397 u32 major; /* uCode version major */ 398 u32 minor; /* uCode version minor */ 399 u32 hw_ver; /* HW Silicon version */ 400 u32 brd_ver; /* HW board version */ 401 u32 log_pc; /* log program counter */ 402 u32 frame_ptr; /* frame pointer */ 403 u32 stack_ptr; /* stack pointer */ 404 u32 hcmd; /* last host command header */ 405 u32 isr0; /* isr status register LMPM_NIC_ISR0: 406 * rxtx_flag */ 407 u32 isr1; /* isr status register LMPM_NIC_ISR1: 408 * host_flag */ 409 u32 isr2; /* isr status register LMPM_NIC_ISR2: 410 * enc_flag */ 411 u32 isr3; /* isr status register LMPM_NIC_ISR3: 412 * time_flag */ 413 u32 isr4; /* isr status register LMPM_NIC_ISR4: 414 * wico interrupt */ 415 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 416 u32 wait_event; /* wait event() caller address */ 417 u32 l2p_control; /* L2pControlField */ 418 u32 l2p_duration; /* L2pDurationField */ 419 u32 l2p_mhvalid; /* L2pMhValidBits */ 420 u32 l2p_addr_match; /* L2pAddrMatchStat */ 421 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 422 * (LMPM_PMG_SEL) */ 423 u32 u_timestamp; /* indicate when the date and time of the 424 * compilation */ 425 u32 flow_handler; /* FH read/write pointers, RX credit */ 426 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 427 428 /* 429 * UMAC error struct - relevant starting from family 8000 chip. 430 * Note: This structure is read from the device with IO accesses, 431 * and the reading already does the endian conversion. As it is 432 * read with u32-sized accesses, any members with a different size 433 * need to be ordered correctly though! 434 */ 435 struct iwl_umac_error_event_table { 436 u32 valid; /* (nonzero) valid, (0) log is empty */ 437 u32 error_id; /* type of error */ 438 u32 blink1; /* branch link */ 439 u32 blink2; /* branch link */ 440 u32 ilink1; /* interrupt link */ 441 u32 ilink2; /* interrupt link */ 442 u32 data1; /* error-specific data */ 443 u32 data2; /* error-specific data */ 444 u32 data3; /* error-specific data */ 445 u32 umac_major; 446 u32 umac_minor; 447 u32 frame_pointer; /* core register 27*/ 448 u32 stack_pointer; /* core register 28 */ 449 u32 cmd_header; /* latest host cmd sent to UMAC */ 450 u32 nic_isr_pref; /* ISR status register */ 451 } __packed; 452 453 #define ERROR_START_OFFSET (1 * sizeof(u32)) 454 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 455 456 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 457 { 458 struct iwl_trans *trans = mvm->trans; 459 struct iwl_umac_error_event_table table; 460 u32 base = mvm->trans->umac_error_event_table; 461 462 if (!mvm->support_umac_log && 463 !(mvm->trans->error_event_table_tlv_status & 464 IWL_ERROR_EVENT_TABLE_UMAC)) 465 return; 466 467 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 468 469 if (table.valid) 470 mvm->fwrt.dump.umac_err_id = table.error_id; 471 472 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 473 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 474 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 475 mvm->status, table.valid); 476 } 477 478 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 479 desc_lookup(table.error_id)); 480 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 481 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 482 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 483 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 484 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 485 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 486 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 487 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 488 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 489 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 490 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 491 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 492 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 493 } 494 495 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num) 496 { 497 struct iwl_trans *trans = mvm->trans; 498 struct iwl_error_event_table table; 499 u32 val, base = mvm->trans->lmac_error_event_table[lmac_num]; 500 501 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 502 if (!base) 503 base = mvm->fw->init_errlog_ptr; 504 } else { 505 if (!base) 506 base = mvm->fw->inst_errlog_ptr; 507 } 508 509 if (base < 0x400000) { 510 IWL_ERR(mvm, 511 "Not valid error log pointer 0x%08X for %s uCode\n", 512 base, 513 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 514 ? "Init" : "RT"); 515 return; 516 } 517 518 /* check if there is a HW error */ 519 val = iwl_trans_read_mem32(trans, base); 520 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 521 int err; 522 523 IWL_ERR(trans, "HW error, resetting before reading\n"); 524 525 /* reset the device */ 526 iwl_trans_sw_reset(trans); 527 528 err = iwl_finish_nic_init(trans); 529 if (err) 530 return; 531 } 532 533 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 534 535 if (table.valid) 536 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id; 537 538 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 539 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 540 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 541 mvm->status, table.valid); 542 } 543 544 /* Do not change this output - scripts rely on it */ 545 546 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 547 548 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 549 desc_lookup(table.error_id)); 550 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 551 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 552 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 553 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 554 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 555 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 556 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 557 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 558 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 559 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 560 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 561 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 562 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 563 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 564 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 565 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 566 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 567 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 568 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 569 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 570 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 571 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 572 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 573 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 574 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 575 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 576 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 577 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 578 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 579 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 580 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 581 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 582 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 583 } 584 585 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 586 { 587 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 588 IWL_ERR(mvm, 589 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 590 return; 591 } 592 593 iwl_mvm_dump_lmac_error_log(mvm, 0); 594 595 if (mvm->trans->lmac_error_event_table[1]) 596 iwl_mvm_dump_lmac_error_log(mvm, 1); 597 598 iwl_mvm_dump_umac_error_log(mvm); 599 } 600 601 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 602 int tid, int frame_limit, u16 ssn) 603 { 604 struct iwl_scd_txq_cfg_cmd cmd = { 605 .scd_queue = queue, 606 .action = SCD_CFG_ENABLE_QUEUE, 607 .window = frame_limit, 608 .sta_id = sta_id, 609 .ssn = cpu_to_le16(ssn), 610 .tx_fifo = fifo, 611 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 612 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 613 .tid = tid, 614 }; 615 int ret; 616 617 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 618 return -EINVAL; 619 620 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 621 "Trying to reconfig unallocated queue %d\n", queue)) 622 return -ENXIO; 623 624 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 625 626 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 627 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 628 queue, fifo, ret); 629 630 return ret; 631 } 632 633 /** 634 * iwl_mvm_send_lq_cmd() - Send link quality command 635 * @sync: This command can be sent synchronously. 636 * 637 * The link quality command is sent as the last step of station creation. 638 * This is the special case in which init is set and we call a callback in 639 * this case to clear the state indicating that station creation is in 640 * progress. 641 */ 642 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync) 643 { 644 struct iwl_host_cmd cmd = { 645 .id = LQ_CMD, 646 .len = { sizeof(struct iwl_lq_cmd), }, 647 .flags = sync ? 0 : CMD_ASYNC, 648 .data = { lq, }, 649 }; 650 651 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 652 iwl_mvm_has_tlc_offload(mvm))) 653 return -EINVAL; 654 655 return iwl_mvm_send_cmd(mvm, &cmd); 656 } 657 658 /** 659 * iwl_mvm_update_smps - Get a request to change the SMPS mode 660 * @req_type: The part of the driver who call for a change. 661 * @smps_requests: The request to change the SMPS mode. 662 * 663 * Get a requst to change the SMPS mode, 664 * and change it according to all other requests in the driver. 665 */ 666 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 667 enum iwl_mvm_smps_type_request req_type, 668 enum ieee80211_smps_mode smps_request) 669 { 670 struct iwl_mvm_vif *mvmvif; 671 enum ieee80211_smps_mode smps_mode; 672 int i; 673 674 lockdep_assert_held(&mvm->mutex); 675 676 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 677 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 678 return; 679 680 if (vif->type == NL80211_IFTYPE_AP) 681 smps_mode = IEEE80211_SMPS_OFF; 682 else 683 smps_mode = IEEE80211_SMPS_AUTOMATIC; 684 685 mvmvif = iwl_mvm_vif_from_mac80211(vif); 686 mvmvif->smps_requests[req_type] = smps_request; 687 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 688 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 689 smps_mode = IEEE80211_SMPS_STATIC; 690 break; 691 } 692 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 693 smps_mode = IEEE80211_SMPS_DYNAMIC; 694 } 695 696 ieee80211_request_smps(vif, smps_mode); 697 } 698 699 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 700 { 701 struct iwl_statistics_cmd scmd = { 702 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 703 }; 704 struct iwl_host_cmd cmd = { 705 .id = STATISTICS_CMD, 706 .len[0] = sizeof(scmd), 707 .data[0] = &scmd, 708 .flags = CMD_WANT_SKB, 709 }; 710 int ret; 711 712 ret = iwl_mvm_send_cmd(mvm, &cmd); 713 if (ret) 714 return ret; 715 716 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 717 iwl_free_resp(&cmd); 718 719 if (clear) 720 iwl_mvm_accu_radio_stats(mvm); 721 722 return 0; 723 } 724 725 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 726 { 727 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 728 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 729 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 730 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 731 } 732 733 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 734 struct ieee80211_vif *vif) 735 { 736 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 737 bool *result = _data; 738 int i; 739 740 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 741 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 742 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 743 *result = false; 744 } 745 } 746 747 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 748 { 749 bool result = true; 750 751 lockdep_assert_held(&mvm->mutex); 752 753 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 754 return false; 755 756 if (mvm->cfg->rx_with_siso_diversity) 757 return false; 758 759 ieee80211_iterate_active_interfaces_atomic( 760 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 761 iwl_mvm_diversity_iter, &result); 762 763 return result; 764 } 765 766 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 767 bool low_latency, u16 mac_id) 768 { 769 struct iwl_mac_low_latency_cmd cmd = { 770 .mac_id = cpu_to_le32(mac_id) 771 }; 772 773 if (!fw_has_capa(&mvm->fw->ucode_capa, 774 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 775 return; 776 777 if (low_latency) { 778 /* currently we don't care about the direction */ 779 cmd.low_latency_rx = 1; 780 cmd.low_latency_tx = 1; 781 } 782 783 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD, 784 MAC_CONF_GROUP, 0), 785 0, sizeof(cmd), &cmd)) 786 IWL_ERR(mvm, "Failed to send low latency command\n"); 787 } 788 789 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 790 bool low_latency, 791 enum iwl_mvm_low_latency_cause cause) 792 { 793 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 794 int res; 795 bool prev; 796 797 lockdep_assert_held(&mvm->mutex); 798 799 prev = iwl_mvm_vif_low_latency(mvmvif); 800 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 801 802 low_latency = iwl_mvm_vif_low_latency(mvmvif); 803 804 if (low_latency == prev) 805 return 0; 806 807 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 808 809 res = iwl_mvm_update_quotas(mvm, false, NULL); 810 if (res) 811 return res; 812 813 iwl_mvm_bt_coex_vif_change(mvm); 814 815 return iwl_mvm_power_update_mac(mvm); 816 } 817 818 struct iwl_mvm_low_latency_iter { 819 bool result; 820 bool result_per_band[NUM_NL80211_BANDS]; 821 }; 822 823 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 824 { 825 struct iwl_mvm_low_latency_iter *result = _data; 826 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 827 enum nl80211_band band; 828 829 if (iwl_mvm_vif_low_latency(mvmvif)) { 830 result->result = true; 831 832 if (!mvmvif->phy_ctxt) 833 return; 834 835 band = mvmvif->phy_ctxt->channel->band; 836 result->result_per_band[band] = true; 837 } 838 } 839 840 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 841 { 842 struct iwl_mvm_low_latency_iter data = {}; 843 844 ieee80211_iterate_active_interfaces_atomic( 845 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 846 iwl_mvm_ll_iter, &data); 847 848 return data.result; 849 } 850 851 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 852 { 853 struct iwl_mvm_low_latency_iter data = {}; 854 855 ieee80211_iterate_active_interfaces_atomic( 856 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 857 iwl_mvm_ll_iter, &data); 858 859 return data.result_per_band[band]; 860 } 861 862 struct iwl_bss_iter_data { 863 struct ieee80211_vif *vif; 864 bool error; 865 }; 866 867 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 868 struct ieee80211_vif *vif) 869 { 870 struct iwl_bss_iter_data *data = _data; 871 872 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 873 return; 874 875 if (data->vif) { 876 data->error = true; 877 return; 878 } 879 880 data->vif = vif; 881 } 882 883 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 884 { 885 struct iwl_bss_iter_data bss_iter_data = {}; 886 887 ieee80211_iterate_active_interfaces_atomic( 888 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 889 iwl_mvm_bss_iface_iterator, &bss_iter_data); 890 891 if (bss_iter_data.error) { 892 IWL_ERR(mvm, "More than one managed interface active!\n"); 893 return ERR_PTR(-EINVAL); 894 } 895 896 return bss_iter_data.vif; 897 } 898 899 struct iwl_sta_iter_data { 900 bool assoc; 901 }; 902 903 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 904 struct ieee80211_vif *vif) 905 { 906 struct iwl_sta_iter_data *data = _data; 907 908 if (vif->type != NL80211_IFTYPE_STATION) 909 return; 910 911 if (vif->bss_conf.assoc) 912 data->assoc = true; 913 } 914 915 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 916 { 917 struct iwl_sta_iter_data data = { 918 .assoc = false, 919 }; 920 921 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 922 IEEE80211_IFACE_ITER_NORMAL, 923 iwl_mvm_sta_iface_iterator, 924 &data); 925 return data.assoc; 926 } 927 928 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 929 struct ieee80211_vif *vif, 930 bool tdls, bool cmd_q) 931 { 932 struct iwl_fw_dbg_trigger_tlv *trigger; 933 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 934 unsigned int default_timeout = 935 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout; 936 937 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 938 /* 939 * We can't know when the station is asleep or awake, so we 940 * must disable the queue hang detection. 941 */ 942 if (fw_has_capa(&mvm->fw->ucode_capa, 943 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 944 vif && vif->type == NL80211_IFTYPE_AP) 945 return IWL_WATCHDOG_DISABLED; 946 return iwlmvm_mod_params.tfd_q_hang_detect ? 947 default_timeout : IWL_WATCHDOG_DISABLED; 948 } 949 950 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 951 txq_timer = (void *)trigger->data; 952 953 if (tdls) 954 return le32_to_cpu(txq_timer->tdls); 955 956 if (cmd_q) 957 return le32_to_cpu(txq_timer->command_queue); 958 959 if (WARN_ON(!vif)) 960 return default_timeout; 961 962 switch (ieee80211_vif_type_p2p(vif)) { 963 case NL80211_IFTYPE_ADHOC: 964 return le32_to_cpu(txq_timer->ibss); 965 case NL80211_IFTYPE_STATION: 966 return le32_to_cpu(txq_timer->bss); 967 case NL80211_IFTYPE_AP: 968 return le32_to_cpu(txq_timer->softap); 969 case NL80211_IFTYPE_P2P_CLIENT: 970 return le32_to_cpu(txq_timer->p2p_client); 971 case NL80211_IFTYPE_P2P_GO: 972 return le32_to_cpu(txq_timer->p2p_go); 973 case NL80211_IFTYPE_P2P_DEVICE: 974 return le32_to_cpu(txq_timer->p2p_device); 975 case NL80211_IFTYPE_MONITOR: 976 return default_timeout; 977 default: 978 WARN_ON(1); 979 return mvm->cfg->base_params->wd_timeout; 980 } 981 } 982 983 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 984 const char *errmsg) 985 { 986 struct iwl_fw_dbg_trigger_tlv *trig; 987 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 988 989 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 990 FW_DBG_TRIGGER_MLME); 991 if (!trig) 992 goto out; 993 994 trig_mlme = (void *)trig->data; 995 996 if (trig_mlme->stop_connection_loss && 997 --trig_mlme->stop_connection_loss) 998 goto out; 999 1000 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1001 1002 out: 1003 ieee80211_connection_loss(vif); 1004 } 1005 1006 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1007 struct ieee80211_vif *vif, 1008 const struct ieee80211_sta *sta, 1009 u16 tid) 1010 { 1011 struct iwl_fw_dbg_trigger_tlv *trig; 1012 struct iwl_fw_dbg_trigger_ba *ba_trig; 1013 1014 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1015 FW_DBG_TRIGGER_BA); 1016 if (!trig) 1017 return; 1018 1019 ba_trig = (void *)trig->data; 1020 1021 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1022 return; 1023 1024 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1025 "Frame from %pM timed out, tid %d", 1026 sta->addr, tid); 1027 } 1028 1029 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1030 { 1031 if (!elapsed) 1032 return 0; 1033 1034 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1035 } 1036 1037 static enum iwl_mvm_traffic_load 1038 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1039 { 1040 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1041 1042 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1043 return IWL_MVM_TRAFFIC_HIGH; 1044 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1045 return IWL_MVM_TRAFFIC_MEDIUM; 1046 1047 return IWL_MVM_TRAFFIC_LOW; 1048 } 1049 1050 struct iwl_mvm_tcm_iter_data { 1051 struct iwl_mvm *mvm; 1052 bool any_sent; 1053 }; 1054 1055 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1056 { 1057 struct iwl_mvm_tcm_iter_data *data = _data; 1058 struct iwl_mvm *mvm = data->mvm; 1059 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1060 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1061 1062 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1063 return; 1064 1065 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1066 1067 if (!mvm->tcm.result.change[mvmvif->id] && 1068 prev == low_latency) { 1069 iwl_mvm_update_quotas(mvm, false, NULL); 1070 return; 1071 } 1072 1073 if (prev != low_latency) { 1074 /* this sends traffic load and updates quota as well */ 1075 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1076 LOW_LATENCY_TRAFFIC); 1077 } else { 1078 iwl_mvm_update_quotas(mvm, false, NULL); 1079 } 1080 1081 data->any_sent = true; 1082 } 1083 1084 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1085 { 1086 struct iwl_mvm_tcm_iter_data data = { 1087 .mvm = mvm, 1088 .any_sent = false, 1089 }; 1090 1091 mutex_lock(&mvm->mutex); 1092 1093 ieee80211_iterate_active_interfaces( 1094 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1095 iwl_mvm_tcm_iter, &data); 1096 1097 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1098 iwl_mvm_config_scan(mvm); 1099 1100 mutex_unlock(&mvm->mutex); 1101 } 1102 1103 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1104 { 1105 struct iwl_mvm *mvm; 1106 struct iwl_mvm_vif *mvmvif; 1107 struct ieee80211_vif *vif; 1108 1109 mvmvif = container_of(wk, struct iwl_mvm_vif, 1110 uapsd_nonagg_detected_wk.work); 1111 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1112 mvm = mvmvif->mvm; 1113 1114 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1115 return; 1116 1117 /* remember that this AP is broken */ 1118 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1119 vif->bss_conf.bssid, ETH_ALEN); 1120 mvm->uapsd_noagg_bssid_write_idx++; 1121 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1122 mvm->uapsd_noagg_bssid_write_idx = 0; 1123 1124 iwl_mvm_connection_loss(mvm, vif, 1125 "AP isn't using AMPDU with uAPSD enabled"); 1126 } 1127 1128 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 1129 struct ieee80211_vif *vif) 1130 { 1131 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1132 1133 if (vif->type != NL80211_IFTYPE_STATION) 1134 return; 1135 1136 if (!vif->bss_conf.assoc) 1137 return; 1138 1139 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1140 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1141 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1142 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1143 return; 1144 1145 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 1146 return; 1147 1148 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 1149 IWL_INFO(mvm, 1150 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1151 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1152 } 1153 1154 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1155 unsigned int elapsed, 1156 int mac) 1157 { 1158 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1159 u64 tpt; 1160 unsigned long rate; 1161 struct ieee80211_vif *vif; 1162 1163 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1164 1165 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1166 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1167 return; 1168 1169 if (iwl_mvm_has_new_rx_api(mvm)) { 1170 tpt = 8 * bytes; /* kbps */ 1171 do_div(tpt, elapsed); 1172 rate *= 1000; /* kbps */ 1173 if (tpt < 22 * rate / 100) 1174 return; 1175 } else { 1176 /* 1177 * the rate here is actually the threshold, in 100Kbps units, 1178 * so do the needed conversion from bytes to 100Kbps: 1179 * 100kb = bits / (100 * 1000), 1180 * 100kbps = 100kb / (msecs / 1000) == 1181 * (bits / (100 * 1000)) / (msecs / 1000) == 1182 * bits / (100 * msecs) 1183 */ 1184 tpt = (8 * bytes); 1185 do_div(tpt, elapsed * 100); 1186 if (tpt < rate) 1187 return; 1188 } 1189 1190 rcu_read_lock(); 1191 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 1192 if (vif) 1193 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 1194 rcu_read_unlock(); 1195 } 1196 1197 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1198 struct ieee80211_vif *vif) 1199 { 1200 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1201 u32 *band = _data; 1202 1203 if (!mvmvif->phy_ctxt) 1204 return; 1205 1206 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1207 } 1208 1209 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1210 unsigned long ts, 1211 bool handle_uapsd) 1212 { 1213 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1214 unsigned int uapsd_elapsed = 1215 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1216 u32 total_airtime = 0; 1217 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1218 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1219 int ac, mac, i; 1220 bool low_latency = false; 1221 enum iwl_mvm_traffic_load load, band_load; 1222 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1223 1224 if (handle_ll) 1225 mvm->tcm.ll_ts = ts; 1226 if (handle_uapsd) 1227 mvm->tcm.uapsd_nonagg_ts = ts; 1228 1229 mvm->tcm.result.elapsed = elapsed; 1230 1231 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1232 IEEE80211_IFACE_ITER_NORMAL, 1233 iwl_mvm_tcm_iterator, 1234 &band); 1235 1236 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1237 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1238 u32 vo_vi_pkts = 0; 1239 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1240 1241 total_airtime += airtime; 1242 band_airtime[band[mac]] += airtime; 1243 1244 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1245 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1246 mvm->tcm.result.load[mac] = load; 1247 mvm->tcm.result.airtime[mac] = airtime; 1248 1249 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1250 vo_vi_pkts += mdata->rx.pkts[ac] + 1251 mdata->tx.pkts[ac]; 1252 1253 /* enable immediately with enough packets but defer disabling */ 1254 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1255 mvm->tcm.result.low_latency[mac] = true; 1256 else if (handle_ll) 1257 mvm->tcm.result.low_latency[mac] = false; 1258 1259 if (handle_ll) { 1260 /* clear old data */ 1261 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1262 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1263 } 1264 low_latency |= mvm->tcm.result.low_latency[mac]; 1265 1266 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1267 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1268 mac); 1269 /* clear old data */ 1270 if (handle_uapsd) 1271 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1272 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1273 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1274 } 1275 1276 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1277 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1278 mvm->tcm.result.global_load = load; 1279 1280 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1281 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1282 mvm->tcm.result.band_load[i] = band_load; 1283 } 1284 1285 /* 1286 * If the current load isn't low we need to force re-evaluation 1287 * in the TCM period, so that we can return to low load if there 1288 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1289 * triggered by traffic). 1290 */ 1291 if (load != IWL_MVM_TRAFFIC_LOW) 1292 return MVM_TCM_PERIOD; 1293 /* 1294 * If low-latency is active we need to force re-evaluation after 1295 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1296 * when there's no traffic at all. 1297 */ 1298 if (low_latency) 1299 return MVM_LL_PERIOD; 1300 /* 1301 * Otherwise, we don't need to run the work struct because we're 1302 * in the default "idle" state - traffic indication is low (which 1303 * also covers the "no traffic" case) and low-latency is disabled 1304 * so there's no state that may need to be disabled when there's 1305 * no traffic at all. 1306 * 1307 * Note that this has no impact on the regular scheduling of the 1308 * updates triggered by traffic - those happen whenever one of the 1309 * two timeouts expire (if there's traffic at all.) 1310 */ 1311 return 0; 1312 } 1313 1314 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1315 { 1316 unsigned long ts = jiffies; 1317 bool handle_uapsd = 1318 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1319 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1320 1321 spin_lock(&mvm->tcm.lock); 1322 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1323 spin_unlock(&mvm->tcm.lock); 1324 return; 1325 } 1326 spin_unlock(&mvm->tcm.lock); 1327 1328 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1329 mutex_lock(&mvm->mutex); 1330 if (iwl_mvm_request_statistics(mvm, true)) 1331 handle_uapsd = false; 1332 mutex_unlock(&mvm->mutex); 1333 } 1334 1335 spin_lock(&mvm->tcm.lock); 1336 /* re-check if somebody else won the recheck race */ 1337 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1338 /* calculate statistics */ 1339 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1340 handle_uapsd); 1341 1342 /* the memset needs to be visible before the timestamp */ 1343 smp_mb(); 1344 mvm->tcm.ts = ts; 1345 if (work_delay) 1346 schedule_delayed_work(&mvm->tcm.work, work_delay); 1347 } 1348 spin_unlock(&mvm->tcm.lock); 1349 1350 iwl_mvm_tcm_results(mvm); 1351 } 1352 1353 void iwl_mvm_tcm_work(struct work_struct *work) 1354 { 1355 struct delayed_work *delayed_work = to_delayed_work(work); 1356 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1357 tcm.work); 1358 1359 iwl_mvm_recalc_tcm(mvm); 1360 } 1361 1362 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1363 { 1364 spin_lock_bh(&mvm->tcm.lock); 1365 mvm->tcm.paused = true; 1366 spin_unlock_bh(&mvm->tcm.lock); 1367 if (with_cancel) 1368 cancel_delayed_work_sync(&mvm->tcm.work); 1369 } 1370 1371 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1372 { 1373 int mac; 1374 bool low_latency = false; 1375 1376 spin_lock_bh(&mvm->tcm.lock); 1377 mvm->tcm.ts = jiffies; 1378 mvm->tcm.ll_ts = jiffies; 1379 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1380 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1381 1382 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1383 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1384 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1385 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1386 1387 if (mvm->tcm.result.low_latency[mac]) 1388 low_latency = true; 1389 } 1390 /* The TCM data needs to be reset before "paused" flag changes */ 1391 smp_mb(); 1392 mvm->tcm.paused = false; 1393 1394 /* 1395 * if the current load is not low or low latency is active, force 1396 * re-evaluation to cover the case of no traffic. 1397 */ 1398 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1399 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1400 else if (low_latency) 1401 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1402 1403 spin_unlock_bh(&mvm->tcm.lock); 1404 } 1405 1406 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1407 { 1408 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1409 1410 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1411 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1412 } 1413 1414 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1415 { 1416 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1417 1418 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1419 } 1420 1421 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1422 { 1423 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1424 1425 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1426 mvm->trans->cfg->gp2_reg_addr) 1427 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1428 1429 return iwl_read_prph(mvm->trans, reg_addr); 1430 } 1431 1432 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1433 { 1434 bool ps_disabled; 1435 1436 lockdep_assert_held(&mvm->mutex); 1437 1438 /* Disable power save when reading GP2 */ 1439 ps_disabled = mvm->ps_disabled; 1440 if (!ps_disabled) { 1441 mvm->ps_disabled = true; 1442 iwl_mvm_power_update_device(mvm); 1443 } 1444 1445 *gp2 = iwl_mvm_get_systime(mvm); 1446 *boottime = ktime_get_boot_ns(); 1447 1448 if (!ps_disabled) { 1449 mvm->ps_disabled = ps_disabled; 1450 iwl_mvm_power_update_device(mvm); 1451 } 1452 } 1453