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%16llX\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 static const struct { 289 const char *name; 290 u8 num; 291 } advanced_lookup[] = { 292 { "NMI_INTERRUPT_WDG", 0x34 }, 293 { "SYSASSERT", 0x35 }, 294 { "UCODE_VERSION_MISMATCH", 0x37 }, 295 { "BAD_COMMAND", 0x38 }, 296 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, 297 { "FATAL_ERROR", 0x3D }, 298 { "NMI_TRM_HW_ERR", 0x46 }, 299 { "NMI_INTERRUPT_TRM", 0x4C }, 300 { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, 301 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, 302 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, 303 { "NMI_INTERRUPT_HOST", 0x66 }, 304 { "NMI_INTERRUPT_ACTION_PT", 0x7C }, 305 { "NMI_INTERRUPT_UNKNOWN", 0x84 }, 306 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, 307 { "ADVANCED_SYSASSERT", 0 }, 308 }; 309 310 static const char *desc_lookup(u32 num) 311 { 312 int i; 313 314 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) 315 if (advanced_lookup[i].num == num) 316 return advanced_lookup[i].name; 317 318 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ 319 return advanced_lookup[i].name; 320 } 321 322 /* 323 * Note: This structure is read from the device with IO accesses, 324 * and the reading already does the endian conversion. As it is 325 * read with u32-sized accesses, any members with a different size 326 * need to be ordered correctly though! 327 */ 328 struct iwl_error_event_table_v1 { 329 u32 valid; /* (nonzero) valid, (0) log is empty */ 330 u32 error_id; /* type of error */ 331 u32 pc; /* program counter */ 332 u32 blink1; /* branch link */ 333 u32 blink2; /* branch link */ 334 u32 ilink1; /* interrupt link */ 335 u32 ilink2; /* interrupt link */ 336 u32 data1; /* error-specific data */ 337 u32 data2; /* error-specific data */ 338 u32 data3; /* error-specific data */ 339 u32 bcon_time; /* beacon timer */ 340 u32 tsf_low; /* network timestamp function timer */ 341 u32 tsf_hi; /* network timestamp function timer */ 342 u32 gp1; /* GP1 timer register */ 343 u32 gp2; /* GP2 timer register */ 344 u32 gp3; /* GP3 timer register */ 345 u32 ucode_ver; /* uCode version */ 346 u32 hw_ver; /* HW Silicon version */ 347 u32 brd_ver; /* HW board version */ 348 u32 log_pc; /* log program counter */ 349 u32 frame_ptr; /* frame pointer */ 350 u32 stack_ptr; /* stack pointer */ 351 u32 hcmd; /* last host command header */ 352 u32 isr0; /* isr status register LMPM_NIC_ISR0: 353 * rxtx_flag */ 354 u32 isr1; /* isr status register LMPM_NIC_ISR1: 355 * host_flag */ 356 u32 isr2; /* isr status register LMPM_NIC_ISR2: 357 * enc_flag */ 358 u32 isr3; /* isr status register LMPM_NIC_ISR3: 359 * time_flag */ 360 u32 isr4; /* isr status register LMPM_NIC_ISR4: 361 * wico interrupt */ 362 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 363 u32 wait_event; /* wait event() caller address */ 364 u32 l2p_control; /* L2pControlField */ 365 u32 l2p_duration; /* L2pDurationField */ 366 u32 l2p_mhvalid; /* L2pMhValidBits */ 367 u32 l2p_addr_match; /* L2pAddrMatchStat */ 368 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 369 * (LMPM_PMG_SEL) */ 370 u32 u_timestamp; /* indicate when the date and time of the 371 * compilation */ 372 u32 flow_handler; /* FH read/write pointers, RX credit */ 373 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 374 375 struct iwl_error_event_table { 376 u32 valid; /* (nonzero) valid, (0) log is empty */ 377 u32 error_id; /* type of error */ 378 u32 trm_hw_status0; /* TRM HW status */ 379 u32 trm_hw_status1; /* TRM HW status */ 380 u32 blink2; /* branch link */ 381 u32 ilink1; /* interrupt link */ 382 u32 ilink2; /* interrupt link */ 383 u32 data1; /* error-specific data */ 384 u32 data2; /* error-specific data */ 385 u32 data3; /* error-specific data */ 386 u32 bcon_time; /* beacon timer */ 387 u32 tsf_low; /* network timestamp function timer */ 388 u32 tsf_hi; /* network timestamp function timer */ 389 u32 gp1; /* GP1 timer register */ 390 u32 gp2; /* GP2 timer register */ 391 u32 fw_rev_type; /* firmware revision type */ 392 u32 major; /* uCode version major */ 393 u32 minor; /* uCode version minor */ 394 u32 hw_ver; /* HW Silicon version */ 395 u32 brd_ver; /* HW board version */ 396 u32 log_pc; /* log program counter */ 397 u32 frame_ptr; /* frame pointer */ 398 u32 stack_ptr; /* stack pointer */ 399 u32 hcmd; /* last host command header */ 400 u32 isr0; /* isr status register LMPM_NIC_ISR0: 401 * rxtx_flag */ 402 u32 isr1; /* isr status register LMPM_NIC_ISR1: 403 * host_flag */ 404 u32 isr2; /* isr status register LMPM_NIC_ISR2: 405 * enc_flag */ 406 u32 isr3; /* isr status register LMPM_NIC_ISR3: 407 * time_flag */ 408 u32 isr4; /* isr status register LMPM_NIC_ISR4: 409 * wico interrupt */ 410 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 411 u32 wait_event; /* wait event() caller address */ 412 u32 l2p_control; /* L2pControlField */ 413 u32 l2p_duration; /* L2pDurationField */ 414 u32 l2p_mhvalid; /* L2pMhValidBits */ 415 u32 l2p_addr_match; /* L2pAddrMatchStat */ 416 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 417 * (LMPM_PMG_SEL) */ 418 u32 u_timestamp; /* indicate when the date and time of the 419 * compilation */ 420 u32 flow_handler; /* FH read/write pointers, RX credit */ 421 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 422 423 /* 424 * UMAC error struct - relevant starting from family 8000 chip. 425 * Note: This structure is read from the device with IO accesses, 426 * and the reading already does the endian conversion. As it is 427 * read with u32-sized accesses, any members with a different size 428 * need to be ordered correctly though! 429 */ 430 struct iwl_umac_error_event_table { 431 u32 valid; /* (nonzero) valid, (0) log is empty */ 432 u32 error_id; /* type of error */ 433 u32 blink1; /* branch link */ 434 u32 blink2; /* branch link */ 435 u32 ilink1; /* interrupt link */ 436 u32 ilink2; /* interrupt link */ 437 u32 data1; /* error-specific data */ 438 u32 data2; /* error-specific data */ 439 u32 data3; /* error-specific data */ 440 u32 umac_major; 441 u32 umac_minor; 442 u32 frame_pointer; /* core register 27*/ 443 u32 stack_pointer; /* core register 28 */ 444 u32 cmd_header; /* latest host cmd sent to UMAC */ 445 u32 nic_isr_pref; /* ISR status register */ 446 } __packed; 447 448 #define ERROR_START_OFFSET (1 * sizeof(u32)) 449 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 450 451 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 452 { 453 struct iwl_trans *trans = mvm->trans; 454 struct iwl_umac_error_event_table table; 455 456 if (!mvm->support_umac_log) 457 return; 458 459 iwl_trans_read_mem_bytes(trans, mvm->umac_error_event_table, &table, 460 sizeof(table)); 461 462 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 463 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 464 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 465 mvm->status, table.valid); 466 } 467 468 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 469 desc_lookup(table.error_id)); 470 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 471 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 472 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 473 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 474 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 475 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 476 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 477 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 478 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 479 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 480 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 481 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 482 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 483 } 484 485 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base) 486 { 487 struct iwl_trans *trans = mvm->trans; 488 struct iwl_error_event_table table; 489 u32 val; 490 491 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 492 if (!base) 493 base = mvm->fw->init_errlog_ptr; 494 } else { 495 if (!base) 496 base = mvm->fw->inst_errlog_ptr; 497 } 498 499 if (base < 0x400000) { 500 IWL_ERR(mvm, 501 "Not valid error log pointer 0x%08X for %s uCode\n", 502 base, 503 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 504 ? "Init" : "RT"); 505 return; 506 } 507 508 /* check if there is a HW error */ 509 val = iwl_trans_read_mem32(trans, base); 510 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 511 int err; 512 513 IWL_ERR(trans, "HW error, resetting before reading\n"); 514 515 /* reset the device */ 516 iwl_trans_sw_reset(trans); 517 518 /* set INIT_DONE flag */ 519 iwl_set_bit(trans, CSR_GP_CNTRL, 520 BIT(trans->cfg->csr->flag_init_done)); 521 522 /* and wait for clock stabilization */ 523 if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) 524 udelay(2); 525 526 err = iwl_poll_bit(trans, CSR_GP_CNTRL, 527 BIT(trans->cfg->csr->flag_mac_clock_ready), 528 BIT(trans->cfg->csr->flag_mac_clock_ready), 529 25000); 530 if (err < 0) { 531 IWL_DEBUG_INFO(trans, 532 "Failed to reset the card for the dump\n"); 533 return; 534 } 535 } 536 537 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 538 539 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 540 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 541 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 542 mvm->status, table.valid); 543 } 544 545 /* Do not change this output - scripts rely on it */ 546 547 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 548 549 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 550 desc_lookup(table.error_id)); 551 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 552 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 553 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 554 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 555 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 556 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 557 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 558 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 559 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 560 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 561 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 562 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 563 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 564 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 565 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 566 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 567 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 568 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 569 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 570 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 571 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 572 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 573 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 574 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 575 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 576 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 577 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 578 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 579 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 580 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 581 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 582 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 583 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 584 } 585 586 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 587 { 588 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 589 IWL_ERR(mvm, 590 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 591 return; 592 } 593 594 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]); 595 596 if (mvm->error_event_table[1]) 597 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]); 598 599 iwl_mvm_dump_umac_error_log(mvm); 600 } 601 602 int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq) 603 { 604 int i; 605 606 lockdep_assert_held(&mvm->queue_info_lock); 607 608 /* This should not be hit with new TX path */ 609 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 610 return -ENOSPC; 611 612 /* Start by looking for a free queue */ 613 for (i = minq; i <= maxq; i++) 614 if (mvm->queue_info[i].hw_queue_refcount == 0 && 615 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 616 return i; 617 618 /* 619 * If no free queue found - settle for an inactive one to reconfigure 620 * Make sure that the inactive queue either already belongs to this STA, 621 * or that if it belongs to another one - it isn't the reserved queue 622 */ 623 for (i = minq; i <= maxq; i++) 624 if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE && 625 (sta_id == mvm->queue_info[i].ra_sta_id || 626 !mvm->queue_info[i].reserved)) 627 return i; 628 629 return -ENOSPC; 630 } 631 632 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 633 int tid, int frame_limit, u16 ssn) 634 { 635 struct iwl_scd_txq_cfg_cmd cmd = { 636 .scd_queue = queue, 637 .action = SCD_CFG_ENABLE_QUEUE, 638 .window = frame_limit, 639 .sta_id = sta_id, 640 .ssn = cpu_to_le16(ssn), 641 .tx_fifo = fifo, 642 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 643 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 644 .tid = tid, 645 }; 646 int ret; 647 648 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 649 return -EINVAL; 650 651 spin_lock_bh(&mvm->queue_info_lock); 652 if (WARN(mvm->queue_info[queue].hw_queue_refcount == 0, 653 "Trying to reconfig unallocated queue %d\n", queue)) { 654 spin_unlock_bh(&mvm->queue_info_lock); 655 return -ENXIO; 656 } 657 spin_unlock_bh(&mvm->queue_info_lock); 658 659 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 660 661 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 662 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 663 queue, fifo, ret); 664 665 return ret; 666 } 667 668 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue, 669 int mac80211_queue, u8 sta_id, u8 tid) 670 { 671 bool enable_queue = true; 672 673 spin_lock_bh(&mvm->queue_info_lock); 674 675 /* Make sure this TID isn't already enabled */ 676 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 677 spin_unlock_bh(&mvm->queue_info_lock); 678 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 679 queue, tid); 680 return false; 681 } 682 683 /* Update mappings and refcounts */ 684 if (mvm->queue_info[queue].hw_queue_refcount > 0) 685 enable_queue = false; 686 687 if (mac80211_queue != IEEE80211_INVAL_HW_QUEUE) { 688 WARN(mac80211_queue >= 689 BITS_PER_BYTE * sizeof(mvm->hw_queue_to_mac80211[0]), 690 "cannot track mac80211 queue %d (queue %d, sta %d, tid %d)\n", 691 mac80211_queue, queue, sta_id, tid); 692 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); 693 } 694 695 mvm->queue_info[queue].hw_queue_refcount++; 696 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 697 mvm->queue_info[queue].ra_sta_id = sta_id; 698 699 if (enable_queue) { 700 if (tid != IWL_MAX_TID_COUNT) 701 mvm->queue_info[queue].mac80211_ac = 702 tid_to_mac80211_ac[tid]; 703 else 704 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 705 706 mvm->queue_info[queue].txq_tid = tid; 707 } 708 709 IWL_DEBUG_TX_QUEUES(mvm, 710 "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n", 711 queue, mvm->queue_info[queue].hw_queue_refcount, 712 mvm->hw_queue_to_mac80211[queue]); 713 714 spin_unlock_bh(&mvm->queue_info_lock); 715 716 return enable_queue; 717 } 718 719 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue, 720 u8 sta_id, u8 tid, unsigned int timeout) 721 { 722 int queue, size = IWL_DEFAULT_QUEUE_SIZE; 723 724 if (tid == IWL_MAX_TID_COUNT) { 725 tid = IWL_MGMT_TID; 726 size = IWL_MGMT_QUEUE_SIZE; 727 } 728 queue = iwl_trans_txq_alloc(mvm->trans, 729 cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE), 730 sta_id, tid, SCD_QUEUE_CFG, size, timeout); 731 732 if (queue < 0) { 733 IWL_DEBUG_TX_QUEUES(mvm, 734 "Failed allocating TXQ for sta %d tid %d, ret: %d\n", 735 sta_id, tid, queue); 736 return queue; 737 } 738 739 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 740 queue, sta_id, tid); 741 742 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); 743 IWL_DEBUG_TX_QUEUES(mvm, 744 "Enabling TXQ #%d (mac80211 map:0x%x)\n", 745 queue, mvm->hw_queue_to_mac80211[queue]); 746 747 return queue; 748 } 749 750 bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, 751 u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg, 752 unsigned int wdg_timeout) 753 { 754 struct iwl_scd_txq_cfg_cmd cmd = { 755 .scd_queue = queue, 756 .action = SCD_CFG_ENABLE_QUEUE, 757 .window = cfg->frame_limit, 758 .sta_id = cfg->sta_id, 759 .ssn = cpu_to_le16(ssn), 760 .tx_fifo = cfg->fifo, 761 .aggregate = cfg->aggregate, 762 .tid = cfg->tid, 763 }; 764 bool inc_ssn; 765 766 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 767 return false; 768 769 /* Send the enabling command if we need to */ 770 if (!iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue, 771 cfg->sta_id, cfg->tid)) 772 return false; 773 774 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 775 NULL, wdg_timeout); 776 if (inc_ssn) 777 le16_add_cpu(&cmd.ssn, 1); 778 779 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 780 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 781 782 return inc_ssn; 783 } 784 785 int iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue, 786 u8 tid, u8 flags) 787 { 788 struct iwl_scd_txq_cfg_cmd cmd = { 789 .scd_queue = queue, 790 .action = SCD_CFG_DISABLE_QUEUE, 791 }; 792 bool remove_mac_queue = mac80211_queue != IEEE80211_INVAL_HW_QUEUE; 793 int ret; 794 795 if (WARN_ON(remove_mac_queue && mac80211_queue >= IEEE80211_MAX_QUEUES)) 796 return -EINVAL; 797 798 if (iwl_mvm_has_new_tx_api(mvm)) { 799 spin_lock_bh(&mvm->queue_info_lock); 800 801 if (remove_mac_queue) 802 mvm->hw_queue_to_mac80211[queue] &= 803 ~BIT(mac80211_queue); 804 805 spin_unlock_bh(&mvm->queue_info_lock); 806 807 iwl_trans_txq_free(mvm->trans, queue); 808 809 return 0; 810 } 811 812 spin_lock_bh(&mvm->queue_info_lock); 813 814 if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) { 815 spin_unlock_bh(&mvm->queue_info_lock); 816 return 0; 817 } 818 819 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 820 821 /* 822 * If there is another TID with the same AC - don't remove the MAC queue 823 * from the mapping 824 */ 825 if (tid < IWL_MAX_TID_COUNT) { 826 unsigned long tid_bitmap = 827 mvm->queue_info[queue].tid_bitmap; 828 int ac = tid_to_mac80211_ac[tid]; 829 int i; 830 831 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) { 832 if (tid_to_mac80211_ac[i] == ac) 833 remove_mac_queue = false; 834 } 835 } 836 837 if (remove_mac_queue) 838 mvm->hw_queue_to_mac80211[queue] &= 839 ~BIT(mac80211_queue); 840 mvm->queue_info[queue].hw_queue_refcount--; 841 842 cmd.action = mvm->queue_info[queue].hw_queue_refcount ? 843 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 844 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 845 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 846 847 IWL_DEBUG_TX_QUEUES(mvm, 848 "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n", 849 queue, 850 mvm->queue_info[queue].hw_queue_refcount, 851 mvm->hw_queue_to_mac80211[queue]); 852 853 /* If the queue is still enabled - nothing left to do in this func */ 854 if (cmd.action == SCD_CFG_ENABLE_QUEUE) { 855 spin_unlock_bh(&mvm->queue_info_lock); 856 return 0; 857 } 858 859 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 860 cmd.tid = mvm->queue_info[queue].txq_tid; 861 862 /* Make sure queue info is correct even though we overwrite it */ 863 WARN(mvm->queue_info[queue].hw_queue_refcount || 864 mvm->queue_info[queue].tid_bitmap || 865 mvm->hw_queue_to_mac80211[queue], 866 "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n", 867 queue, mvm->queue_info[queue].hw_queue_refcount, 868 mvm->hw_queue_to_mac80211[queue], 869 mvm->queue_info[queue].tid_bitmap); 870 871 /* If we are here - the queue is freed and we can zero out these vals */ 872 mvm->queue_info[queue].hw_queue_refcount = 0; 873 mvm->queue_info[queue].tid_bitmap = 0; 874 mvm->hw_queue_to_mac80211[queue] = 0; 875 876 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 877 mvm->queue_info[queue].reserved = false; 878 879 spin_unlock_bh(&mvm->queue_info_lock); 880 881 iwl_trans_txq_disable(mvm->trans, queue, false); 882 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 883 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 884 885 if (ret) 886 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 887 queue, ret); 888 return ret; 889 } 890 891 /** 892 * iwl_mvm_send_lq_cmd() - Send link quality command 893 * @sync: This command can be sent synchronously. 894 * 895 * The link quality command is sent as the last step of station creation. 896 * This is the special case in which init is set and we call a callback in 897 * this case to clear the state indicating that station creation is in 898 * progress. 899 */ 900 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync) 901 { 902 struct iwl_host_cmd cmd = { 903 .id = LQ_CMD, 904 .len = { sizeof(struct iwl_lq_cmd), }, 905 .flags = sync ? 0 : CMD_ASYNC, 906 .data = { lq, }, 907 }; 908 909 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 910 iwl_mvm_has_tlc_offload(mvm))) 911 return -EINVAL; 912 913 return iwl_mvm_send_cmd(mvm, &cmd); 914 } 915 916 /** 917 * iwl_mvm_update_smps - Get a request to change the SMPS mode 918 * @req_type: The part of the driver who call for a change. 919 * @smps_requests: The request to change the SMPS mode. 920 * 921 * Get a requst to change the SMPS mode, 922 * and change it according to all other requests in the driver. 923 */ 924 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 925 enum iwl_mvm_smps_type_request req_type, 926 enum ieee80211_smps_mode smps_request) 927 { 928 struct iwl_mvm_vif *mvmvif; 929 enum ieee80211_smps_mode smps_mode; 930 int i; 931 932 lockdep_assert_held(&mvm->mutex); 933 934 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 935 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 936 return; 937 938 if (vif->type == NL80211_IFTYPE_AP) 939 smps_mode = IEEE80211_SMPS_OFF; 940 else 941 smps_mode = IEEE80211_SMPS_AUTOMATIC; 942 943 mvmvif = iwl_mvm_vif_from_mac80211(vif); 944 mvmvif->smps_requests[req_type] = smps_request; 945 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 946 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 947 smps_mode = IEEE80211_SMPS_STATIC; 948 break; 949 } 950 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 951 smps_mode = IEEE80211_SMPS_DYNAMIC; 952 } 953 954 ieee80211_request_smps(vif, smps_mode); 955 } 956 957 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 958 { 959 struct iwl_statistics_cmd scmd = { 960 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 961 }; 962 struct iwl_host_cmd cmd = { 963 .id = STATISTICS_CMD, 964 .len[0] = sizeof(scmd), 965 .data[0] = &scmd, 966 .flags = CMD_WANT_SKB, 967 }; 968 int ret; 969 970 ret = iwl_mvm_send_cmd(mvm, &cmd); 971 if (ret) 972 return ret; 973 974 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 975 iwl_free_resp(&cmd); 976 977 if (clear) 978 iwl_mvm_accu_radio_stats(mvm); 979 980 return 0; 981 } 982 983 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 984 { 985 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 986 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 987 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 988 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 989 } 990 991 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 992 struct ieee80211_vif *vif) 993 { 994 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 995 bool *result = _data; 996 int i; 997 998 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 999 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 1000 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 1001 *result = false; 1002 } 1003 } 1004 1005 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 1006 { 1007 bool result = true; 1008 1009 lockdep_assert_held(&mvm->mutex); 1010 1011 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 1012 return false; 1013 1014 if (mvm->cfg->rx_with_siso_diversity) 1015 return false; 1016 1017 ieee80211_iterate_active_interfaces_atomic( 1018 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1019 iwl_mvm_diversity_iter, &result); 1020 1021 return result; 1022 } 1023 1024 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1025 bool low_latency, 1026 enum iwl_mvm_low_latency_cause cause) 1027 { 1028 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1029 int res; 1030 bool prev; 1031 1032 lockdep_assert_held(&mvm->mutex); 1033 1034 prev = iwl_mvm_vif_low_latency(mvmvif); 1035 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 1036 1037 low_latency = iwl_mvm_vif_low_latency(mvmvif); 1038 1039 if (low_latency == prev) 1040 return 0; 1041 1042 if (fw_has_capa(&mvm->fw->ucode_capa, 1043 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) { 1044 struct iwl_mac_low_latency_cmd cmd = { 1045 .mac_id = cpu_to_le32(mvmvif->id) 1046 }; 1047 1048 if (low_latency) { 1049 /* currently we don't care about the direction */ 1050 cmd.low_latency_rx = 1; 1051 cmd.low_latency_tx = 1; 1052 } 1053 res = iwl_mvm_send_cmd_pdu(mvm, 1054 iwl_cmd_id(LOW_LATENCY_CMD, 1055 MAC_CONF_GROUP, 0), 1056 0, sizeof(cmd), &cmd); 1057 if (res) 1058 IWL_ERR(mvm, "Failed to send low latency command\n"); 1059 } 1060 1061 res = iwl_mvm_update_quotas(mvm, false, NULL); 1062 if (res) 1063 return res; 1064 1065 iwl_mvm_bt_coex_vif_change(mvm); 1066 1067 return iwl_mvm_power_update_mac(mvm); 1068 } 1069 1070 struct iwl_mvm_low_latency_iter { 1071 bool result; 1072 bool result_per_band[NUM_NL80211_BANDS]; 1073 }; 1074 1075 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1076 { 1077 struct iwl_mvm_low_latency_iter *result = _data; 1078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1079 enum nl80211_band band; 1080 1081 if (iwl_mvm_vif_low_latency(mvmvif)) { 1082 result->result = true; 1083 1084 if (!mvmvif->phy_ctxt) 1085 return; 1086 1087 band = mvmvif->phy_ctxt->channel->band; 1088 result->result_per_band[band] = true; 1089 } 1090 } 1091 1092 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 1093 { 1094 struct iwl_mvm_low_latency_iter data = {}; 1095 1096 ieee80211_iterate_active_interfaces_atomic( 1097 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1098 iwl_mvm_ll_iter, &data); 1099 1100 return data.result; 1101 } 1102 1103 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 1104 { 1105 struct iwl_mvm_low_latency_iter data = {}; 1106 1107 ieee80211_iterate_active_interfaces_atomic( 1108 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1109 iwl_mvm_ll_iter, &data); 1110 1111 return data.result_per_band[band]; 1112 } 1113 1114 struct iwl_bss_iter_data { 1115 struct ieee80211_vif *vif; 1116 bool error; 1117 }; 1118 1119 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 1120 struct ieee80211_vif *vif) 1121 { 1122 struct iwl_bss_iter_data *data = _data; 1123 1124 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 1125 return; 1126 1127 if (data->vif) { 1128 data->error = true; 1129 return; 1130 } 1131 1132 data->vif = vif; 1133 } 1134 1135 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 1136 { 1137 struct iwl_bss_iter_data bss_iter_data = {}; 1138 1139 ieee80211_iterate_active_interfaces_atomic( 1140 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1141 iwl_mvm_bss_iface_iterator, &bss_iter_data); 1142 1143 if (bss_iter_data.error) { 1144 IWL_ERR(mvm, "More than one managed interface active!\n"); 1145 return ERR_PTR(-EINVAL); 1146 } 1147 1148 return bss_iter_data.vif; 1149 } 1150 1151 struct iwl_sta_iter_data { 1152 bool assoc; 1153 }; 1154 1155 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 1156 struct ieee80211_vif *vif) 1157 { 1158 struct iwl_sta_iter_data *data = _data; 1159 1160 if (vif->type != NL80211_IFTYPE_STATION) 1161 return; 1162 1163 if (vif->bss_conf.assoc) 1164 data->assoc = true; 1165 } 1166 1167 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 1168 { 1169 struct iwl_sta_iter_data data = { 1170 .assoc = false, 1171 }; 1172 1173 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1174 IEEE80211_IFACE_ITER_NORMAL, 1175 iwl_mvm_sta_iface_iterator, 1176 &data); 1177 return data.assoc; 1178 } 1179 1180 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 1181 struct ieee80211_vif *vif, 1182 bool tdls, bool cmd_q) 1183 { 1184 struct iwl_fw_dbg_trigger_tlv *trigger; 1185 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 1186 unsigned int default_timeout = 1187 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout; 1188 1189 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 1190 /* 1191 * We can't know when the station is asleep or awake, so we 1192 * must disable the queue hang detection. 1193 */ 1194 if (fw_has_capa(&mvm->fw->ucode_capa, 1195 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 1196 vif && vif->type == NL80211_IFTYPE_AP) 1197 return IWL_WATCHDOG_DISABLED; 1198 return iwlmvm_mod_params.tfd_q_hang_detect ? 1199 default_timeout : IWL_WATCHDOG_DISABLED; 1200 } 1201 1202 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 1203 txq_timer = (void *)trigger->data; 1204 1205 if (tdls) 1206 return le32_to_cpu(txq_timer->tdls); 1207 1208 if (cmd_q) 1209 return le32_to_cpu(txq_timer->command_queue); 1210 1211 if (WARN_ON(!vif)) 1212 return default_timeout; 1213 1214 switch (ieee80211_vif_type_p2p(vif)) { 1215 case NL80211_IFTYPE_ADHOC: 1216 return le32_to_cpu(txq_timer->ibss); 1217 case NL80211_IFTYPE_STATION: 1218 return le32_to_cpu(txq_timer->bss); 1219 case NL80211_IFTYPE_AP: 1220 return le32_to_cpu(txq_timer->softap); 1221 case NL80211_IFTYPE_P2P_CLIENT: 1222 return le32_to_cpu(txq_timer->p2p_client); 1223 case NL80211_IFTYPE_P2P_GO: 1224 return le32_to_cpu(txq_timer->p2p_go); 1225 case NL80211_IFTYPE_P2P_DEVICE: 1226 return le32_to_cpu(txq_timer->p2p_device); 1227 case NL80211_IFTYPE_MONITOR: 1228 return default_timeout; 1229 default: 1230 WARN_ON(1); 1231 return mvm->cfg->base_params->wd_timeout; 1232 } 1233 } 1234 1235 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1236 const char *errmsg) 1237 { 1238 struct iwl_fw_dbg_trigger_tlv *trig; 1239 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 1240 1241 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1242 FW_DBG_TRIGGER_MLME); 1243 if (!trig) 1244 goto out; 1245 1246 trig_mlme = (void *)trig->data; 1247 1248 if (trig_mlme->stop_connection_loss && 1249 --trig_mlme->stop_connection_loss) 1250 goto out; 1251 1252 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1253 1254 out: 1255 ieee80211_connection_loss(vif); 1256 } 1257 1258 /* 1259 * Remove inactive TIDs of a given queue. 1260 * If all queue TIDs are inactive - mark the queue as inactive 1261 * If only some the queue TIDs are inactive - unmap them from the queue 1262 */ 1263 static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1264 struct iwl_mvm_sta *mvmsta, int queue, 1265 unsigned long tid_bitmap) 1266 { 1267 int tid; 1268 1269 lockdep_assert_held(&mvmsta->lock); 1270 lockdep_assert_held(&mvm->queue_info_lock); 1271 1272 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1273 return; 1274 1275 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1276 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1277 /* If some TFDs are still queued - don't mark TID as inactive */ 1278 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1279 tid_bitmap &= ~BIT(tid); 1280 1281 /* Don't mark as inactive any TID that has an active BA */ 1282 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1283 tid_bitmap &= ~BIT(tid); 1284 } 1285 1286 /* If all TIDs in the queue are inactive - mark queue as inactive. */ 1287 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1288 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE; 1289 1290 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) 1291 mvmsta->tid_data[tid].is_tid_active = false; 1292 1293 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n", 1294 queue); 1295 return; 1296 } 1297 1298 /* 1299 * If we are here, this is a shared queue and not all TIDs timed-out. 1300 * Remove the ones that did. 1301 */ 1302 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1303 int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]; 1304 1305 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1306 mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac_queue); 1307 mvm->queue_info[queue].hw_queue_refcount--; 1308 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1309 mvmsta->tid_data[tid].is_tid_active = false; 1310 1311 IWL_DEBUG_TX_QUEUES(mvm, 1312 "Removing inactive TID %d from shared Q:%d\n", 1313 tid, queue); 1314 } 1315 1316 IWL_DEBUG_TX_QUEUES(mvm, 1317 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1318 mvm->queue_info[queue].tid_bitmap); 1319 1320 /* 1321 * There may be different TIDs with the same mac queues, so make 1322 * sure all TIDs have existing corresponding mac queues enabled 1323 */ 1324 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1325 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1326 mvm->hw_queue_to_mac80211[queue] |= 1327 BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]); 1328 } 1329 1330 /* If the queue is marked as shared - "unshare" it */ 1331 if (mvm->queue_info[queue].hw_queue_refcount == 1 && 1332 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1333 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING; 1334 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1335 queue); 1336 } 1337 } 1338 1339 void iwl_mvm_inactivity_check(struct iwl_mvm *mvm) 1340 { 1341 unsigned long timeout_queues_map = 0; 1342 unsigned long now = jiffies; 1343 int i; 1344 1345 if (iwl_mvm_has_new_tx_api(mvm)) 1346 return; 1347 1348 spin_lock_bh(&mvm->queue_info_lock); 1349 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) 1350 if (mvm->queue_info[i].hw_queue_refcount > 0) 1351 timeout_queues_map |= BIT(i); 1352 spin_unlock_bh(&mvm->queue_info_lock); 1353 1354 rcu_read_lock(); 1355 1356 /* 1357 * If a queue time outs - mark it as INACTIVE (don't remove right away 1358 * if we don't have to.) This is an optimization in case traffic comes 1359 * later, and we don't HAVE to use a currently-inactive queue 1360 */ 1361 for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) { 1362 struct ieee80211_sta *sta; 1363 struct iwl_mvm_sta *mvmsta; 1364 u8 sta_id; 1365 int tid; 1366 unsigned long inactive_tid_bitmap = 0; 1367 unsigned long queue_tid_bitmap; 1368 1369 spin_lock_bh(&mvm->queue_info_lock); 1370 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1371 1372 /* If TXQ isn't in active use anyway - nothing to do here... */ 1373 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1374 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) { 1375 spin_unlock_bh(&mvm->queue_info_lock); 1376 continue; 1377 } 1378 1379 /* Check to see if there are inactive TIDs on this queue */ 1380 for_each_set_bit(tid, &queue_tid_bitmap, 1381 IWL_MAX_TID_COUNT + 1) { 1382 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1383 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1384 continue; 1385 1386 inactive_tid_bitmap |= BIT(tid); 1387 } 1388 spin_unlock_bh(&mvm->queue_info_lock); 1389 1390 /* If all TIDs are active - finish check on this queue */ 1391 if (!inactive_tid_bitmap) 1392 continue; 1393 1394 /* 1395 * If we are here - the queue hadn't been served recently and is 1396 * in use 1397 */ 1398 1399 sta_id = mvm->queue_info[i].ra_sta_id; 1400 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1401 1402 /* 1403 * If the STA doesn't exist anymore, it isn't an error. It could 1404 * be that it was removed since getting the queues, and in this 1405 * case it should've inactivated its queues anyway. 1406 */ 1407 if (IS_ERR_OR_NULL(sta)) 1408 continue; 1409 1410 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1411 1412 spin_lock_bh(&mvmsta->lock); 1413 spin_lock(&mvm->queue_info_lock); 1414 iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1415 inactive_tid_bitmap); 1416 spin_unlock(&mvm->queue_info_lock); 1417 spin_unlock_bh(&mvmsta->lock); 1418 } 1419 1420 rcu_read_unlock(); 1421 } 1422 1423 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1424 struct ieee80211_vif *vif, 1425 const struct ieee80211_sta *sta, 1426 u16 tid) 1427 { 1428 struct iwl_fw_dbg_trigger_tlv *trig; 1429 struct iwl_fw_dbg_trigger_ba *ba_trig; 1430 1431 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1432 FW_DBG_TRIGGER_BA); 1433 if (!trig) 1434 return; 1435 1436 ba_trig = (void *)trig->data; 1437 1438 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1439 return; 1440 1441 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1442 "Frame from %pM timed out, tid %d", 1443 sta->addr, tid); 1444 } 1445 1446 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1447 { 1448 if (!elapsed) 1449 return 0; 1450 1451 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1452 } 1453 1454 static enum iwl_mvm_traffic_load 1455 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1456 { 1457 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1458 1459 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1460 return IWL_MVM_TRAFFIC_HIGH; 1461 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1462 return IWL_MVM_TRAFFIC_MEDIUM; 1463 1464 return IWL_MVM_TRAFFIC_LOW; 1465 } 1466 1467 struct iwl_mvm_tcm_iter_data { 1468 struct iwl_mvm *mvm; 1469 bool any_sent; 1470 }; 1471 1472 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1473 { 1474 struct iwl_mvm_tcm_iter_data *data = _data; 1475 struct iwl_mvm *mvm = data->mvm; 1476 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1477 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1478 1479 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1480 return; 1481 1482 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1483 1484 if (!mvm->tcm.result.change[mvmvif->id] && 1485 prev == low_latency) { 1486 iwl_mvm_update_quotas(mvm, false, NULL); 1487 return; 1488 } 1489 1490 if (prev != low_latency) { 1491 /* this sends traffic load and updates quota as well */ 1492 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1493 LOW_LATENCY_TRAFFIC); 1494 } else { 1495 iwl_mvm_update_quotas(mvm, false, NULL); 1496 } 1497 1498 data->any_sent = true; 1499 } 1500 1501 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1502 { 1503 struct iwl_mvm_tcm_iter_data data = { 1504 .mvm = mvm, 1505 .any_sent = false, 1506 }; 1507 1508 mutex_lock(&mvm->mutex); 1509 1510 ieee80211_iterate_active_interfaces( 1511 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1512 iwl_mvm_tcm_iter, &data); 1513 1514 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1515 iwl_mvm_config_scan(mvm); 1516 1517 mutex_unlock(&mvm->mutex); 1518 } 1519 1520 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1521 { 1522 struct iwl_mvm *mvm; 1523 struct iwl_mvm_vif *mvmvif; 1524 struct ieee80211_vif *vif; 1525 1526 mvmvif = container_of(wk, struct iwl_mvm_vif, 1527 uapsd_nonagg_detected_wk.work); 1528 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1529 mvm = mvmvif->mvm; 1530 1531 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1532 return; 1533 1534 /* remember that this AP is broken */ 1535 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1536 vif->bss_conf.bssid, ETH_ALEN); 1537 mvm->uapsd_noagg_bssid_write_idx++; 1538 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1539 mvm->uapsd_noagg_bssid_write_idx = 0; 1540 1541 iwl_mvm_connection_loss(mvm, vif, 1542 "AP isn't using AMPDU with uAPSD enabled"); 1543 } 1544 1545 static void iwl_mvm_uapsd_agg_disconnect_iter(void *data, u8 *mac, 1546 struct ieee80211_vif *vif) 1547 { 1548 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1549 struct iwl_mvm *mvm = mvmvif->mvm; 1550 int *mac_id = data; 1551 1552 if (vif->type != NL80211_IFTYPE_STATION) 1553 return; 1554 1555 if (mvmvif->id != *mac_id) 1556 return; 1557 1558 if (!vif->bss_conf.assoc) 1559 return; 1560 1561 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1562 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1563 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1564 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1565 return; 1566 1567 if (mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected) 1568 return; 1569 1570 mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected = true; 1571 IWL_INFO(mvm, 1572 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1573 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1574 } 1575 1576 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1577 unsigned int elapsed, 1578 int mac) 1579 { 1580 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1581 u64 tpt; 1582 unsigned long rate; 1583 1584 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1585 1586 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1587 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1588 return; 1589 1590 if (iwl_mvm_has_new_rx_api(mvm)) { 1591 tpt = 8 * bytes; /* kbps */ 1592 do_div(tpt, elapsed); 1593 rate *= 1000; /* kbps */ 1594 if (tpt < 22 * rate / 100) 1595 return; 1596 } else { 1597 /* 1598 * the rate here is actually the threshold, in 100Kbps units, 1599 * so do the needed conversion from bytes to 100Kbps: 1600 * 100kb = bits / (100 * 1000), 1601 * 100kbps = 100kb / (msecs / 1000) == 1602 * (bits / (100 * 1000)) / (msecs / 1000) == 1603 * bits / (100 * msecs) 1604 */ 1605 tpt = (8 * bytes); 1606 do_div(tpt, elapsed * 100); 1607 if (tpt < rate) 1608 return; 1609 } 1610 1611 ieee80211_iterate_active_interfaces_atomic( 1612 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1613 iwl_mvm_uapsd_agg_disconnect_iter, &mac); 1614 } 1615 1616 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1617 struct ieee80211_vif *vif) 1618 { 1619 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1620 u32 *band = _data; 1621 1622 if (!mvmvif->phy_ctxt) 1623 return; 1624 1625 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1626 } 1627 1628 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1629 unsigned long ts, 1630 bool handle_uapsd) 1631 { 1632 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1633 unsigned int uapsd_elapsed = 1634 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1635 u32 total_airtime = 0; 1636 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1637 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1638 int ac, mac, i; 1639 bool low_latency = false; 1640 enum iwl_mvm_traffic_load load, band_load; 1641 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1642 1643 if (handle_ll) 1644 mvm->tcm.ll_ts = ts; 1645 if (handle_uapsd) 1646 mvm->tcm.uapsd_nonagg_ts = ts; 1647 1648 mvm->tcm.result.elapsed = elapsed; 1649 1650 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1651 IEEE80211_IFACE_ITER_NORMAL, 1652 iwl_mvm_tcm_iterator, 1653 &band); 1654 1655 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1656 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1657 u32 vo_vi_pkts = 0; 1658 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1659 1660 total_airtime += airtime; 1661 band_airtime[band[mac]] += airtime; 1662 1663 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1664 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1665 mvm->tcm.result.load[mac] = load; 1666 mvm->tcm.result.airtime[mac] = airtime; 1667 1668 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1669 vo_vi_pkts += mdata->rx.pkts[ac] + 1670 mdata->tx.pkts[ac]; 1671 1672 /* enable immediately with enough packets but defer disabling */ 1673 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1674 mvm->tcm.result.low_latency[mac] = true; 1675 else if (handle_ll) 1676 mvm->tcm.result.low_latency[mac] = false; 1677 1678 if (handle_ll) { 1679 /* clear old data */ 1680 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1681 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1682 } 1683 low_latency |= mvm->tcm.result.low_latency[mac]; 1684 1685 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1686 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1687 mac); 1688 /* clear old data */ 1689 if (handle_uapsd) 1690 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1691 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1692 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1693 } 1694 1695 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1696 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1697 mvm->tcm.result.global_load = load; 1698 1699 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1700 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1701 mvm->tcm.result.band_load[i] = band_load; 1702 } 1703 1704 /* 1705 * If the current load isn't low we need to force re-evaluation 1706 * in the TCM period, so that we can return to low load if there 1707 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1708 * triggered by traffic). 1709 */ 1710 if (load != IWL_MVM_TRAFFIC_LOW) 1711 return MVM_TCM_PERIOD; 1712 /* 1713 * If low-latency is active we need to force re-evaluation after 1714 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1715 * when there's no traffic at all. 1716 */ 1717 if (low_latency) 1718 return MVM_LL_PERIOD; 1719 /* 1720 * Otherwise, we don't need to run the work struct because we're 1721 * in the default "idle" state - traffic indication is low (which 1722 * also covers the "no traffic" case) and low-latency is disabled 1723 * so there's no state that may need to be disabled when there's 1724 * no traffic at all. 1725 * 1726 * Note that this has no impact on the regular scheduling of the 1727 * updates triggered by traffic - those happen whenever one of the 1728 * two timeouts expire (if there's traffic at all.) 1729 */ 1730 return 0; 1731 } 1732 1733 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1734 { 1735 unsigned long ts = jiffies; 1736 bool handle_uapsd = 1737 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1738 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1739 1740 spin_lock(&mvm->tcm.lock); 1741 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1742 spin_unlock(&mvm->tcm.lock); 1743 return; 1744 } 1745 spin_unlock(&mvm->tcm.lock); 1746 1747 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1748 mutex_lock(&mvm->mutex); 1749 if (iwl_mvm_request_statistics(mvm, true)) 1750 handle_uapsd = false; 1751 mutex_unlock(&mvm->mutex); 1752 } 1753 1754 spin_lock(&mvm->tcm.lock); 1755 /* re-check if somebody else won the recheck race */ 1756 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1757 /* calculate statistics */ 1758 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1759 handle_uapsd); 1760 1761 /* the memset needs to be visible before the timestamp */ 1762 smp_mb(); 1763 mvm->tcm.ts = ts; 1764 if (work_delay) 1765 schedule_delayed_work(&mvm->tcm.work, work_delay); 1766 } 1767 spin_unlock(&mvm->tcm.lock); 1768 1769 iwl_mvm_tcm_results(mvm); 1770 } 1771 1772 void iwl_mvm_tcm_work(struct work_struct *work) 1773 { 1774 struct delayed_work *delayed_work = to_delayed_work(work); 1775 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1776 tcm.work); 1777 1778 iwl_mvm_recalc_tcm(mvm); 1779 } 1780 1781 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1782 { 1783 spin_lock_bh(&mvm->tcm.lock); 1784 mvm->tcm.paused = true; 1785 spin_unlock_bh(&mvm->tcm.lock); 1786 if (with_cancel) 1787 cancel_delayed_work_sync(&mvm->tcm.work); 1788 } 1789 1790 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1791 { 1792 int mac; 1793 1794 spin_lock_bh(&mvm->tcm.lock); 1795 mvm->tcm.ts = jiffies; 1796 mvm->tcm.ll_ts = jiffies; 1797 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1798 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1799 1800 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1801 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1802 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1803 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1804 } 1805 /* The TCM data needs to be reset before "paused" flag changes */ 1806 smp_mb(); 1807 mvm->tcm.paused = false; 1808 spin_unlock_bh(&mvm->tcm.lock); 1809 } 1810 1811 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1812 { 1813 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1814 1815 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1816 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1817 } 1818 1819 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1820 { 1821 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1822 1823 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1824 } 1825 1826 1827 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1828 { 1829 bool ps_disabled; 1830 1831 lockdep_assert_held(&mvm->mutex); 1832 1833 /* Disable power save when reading GP2 */ 1834 ps_disabled = mvm->ps_disabled; 1835 if (!ps_disabled) { 1836 mvm->ps_disabled = true; 1837 iwl_mvm_power_update_device(mvm); 1838 } 1839 1840 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); 1841 *boottime = ktime_get_boot_ns(); 1842 1843 if (!ps_disabled) { 1844 mvm->ps_disabled = ps_disabled; 1845 iwl_mvm_power_update_device(mvm); 1846 } 1847 } 1848