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_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 603 int tid, int frame_limit, u16 ssn) 604 { 605 struct iwl_scd_txq_cfg_cmd cmd = { 606 .scd_queue = queue, 607 .action = SCD_CFG_ENABLE_QUEUE, 608 .window = frame_limit, 609 .sta_id = sta_id, 610 .ssn = cpu_to_le16(ssn), 611 .tx_fifo = fifo, 612 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 613 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 614 .tid = tid, 615 }; 616 int ret; 617 618 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 619 return -EINVAL; 620 621 spin_lock_bh(&mvm->queue_info_lock); 622 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 623 "Trying to reconfig unallocated queue %d\n", queue)) { 624 spin_unlock_bh(&mvm->queue_info_lock); 625 return -ENXIO; 626 } 627 spin_unlock_bh(&mvm->queue_info_lock); 628 629 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 630 631 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 632 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 633 queue, fifo, ret); 634 635 return ret; 636 } 637 638 /** 639 * iwl_mvm_send_lq_cmd() - Send link quality command 640 * @sync: This command can be sent synchronously. 641 * 642 * The link quality command is sent as the last step of station creation. 643 * This is the special case in which init is set and we call a callback in 644 * this case to clear the state indicating that station creation is in 645 * progress. 646 */ 647 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync) 648 { 649 struct iwl_host_cmd cmd = { 650 .id = LQ_CMD, 651 .len = { sizeof(struct iwl_lq_cmd), }, 652 .flags = sync ? 0 : CMD_ASYNC, 653 .data = { lq, }, 654 }; 655 656 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 657 iwl_mvm_has_tlc_offload(mvm))) 658 return -EINVAL; 659 660 return iwl_mvm_send_cmd(mvm, &cmd); 661 } 662 663 /** 664 * iwl_mvm_update_smps - Get a request to change the SMPS mode 665 * @req_type: The part of the driver who call for a change. 666 * @smps_requests: The request to change the SMPS mode. 667 * 668 * Get a requst to change the SMPS mode, 669 * and change it according to all other requests in the driver. 670 */ 671 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 672 enum iwl_mvm_smps_type_request req_type, 673 enum ieee80211_smps_mode smps_request) 674 { 675 struct iwl_mvm_vif *mvmvif; 676 enum ieee80211_smps_mode smps_mode; 677 int i; 678 679 lockdep_assert_held(&mvm->mutex); 680 681 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 682 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 683 return; 684 685 if (vif->type == NL80211_IFTYPE_AP) 686 smps_mode = IEEE80211_SMPS_OFF; 687 else 688 smps_mode = IEEE80211_SMPS_AUTOMATIC; 689 690 mvmvif = iwl_mvm_vif_from_mac80211(vif); 691 mvmvif->smps_requests[req_type] = smps_request; 692 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 693 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 694 smps_mode = IEEE80211_SMPS_STATIC; 695 break; 696 } 697 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 698 smps_mode = IEEE80211_SMPS_DYNAMIC; 699 } 700 701 ieee80211_request_smps(vif, smps_mode); 702 } 703 704 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 705 { 706 struct iwl_statistics_cmd scmd = { 707 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 708 }; 709 struct iwl_host_cmd cmd = { 710 .id = STATISTICS_CMD, 711 .len[0] = sizeof(scmd), 712 .data[0] = &scmd, 713 .flags = CMD_WANT_SKB, 714 }; 715 int ret; 716 717 ret = iwl_mvm_send_cmd(mvm, &cmd); 718 if (ret) 719 return ret; 720 721 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 722 iwl_free_resp(&cmd); 723 724 if (clear) 725 iwl_mvm_accu_radio_stats(mvm); 726 727 return 0; 728 } 729 730 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 731 { 732 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 733 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 734 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 735 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 736 } 737 738 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 739 struct ieee80211_vif *vif) 740 { 741 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 742 bool *result = _data; 743 int i; 744 745 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 746 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 747 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 748 *result = false; 749 } 750 } 751 752 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 753 { 754 bool result = true; 755 756 lockdep_assert_held(&mvm->mutex); 757 758 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 759 return false; 760 761 if (mvm->cfg->rx_with_siso_diversity) 762 return false; 763 764 ieee80211_iterate_active_interfaces_atomic( 765 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 766 iwl_mvm_diversity_iter, &result); 767 768 return result; 769 } 770 771 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 772 bool low_latency, 773 enum iwl_mvm_low_latency_cause cause) 774 { 775 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 776 int res; 777 bool prev; 778 779 lockdep_assert_held(&mvm->mutex); 780 781 prev = iwl_mvm_vif_low_latency(mvmvif); 782 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 783 784 low_latency = iwl_mvm_vif_low_latency(mvmvif); 785 786 if (low_latency == prev) 787 return 0; 788 789 if (fw_has_capa(&mvm->fw->ucode_capa, 790 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) { 791 struct iwl_mac_low_latency_cmd cmd = { 792 .mac_id = cpu_to_le32(mvmvif->id) 793 }; 794 795 if (low_latency) { 796 /* currently we don't care about the direction */ 797 cmd.low_latency_rx = 1; 798 cmd.low_latency_tx = 1; 799 } 800 res = iwl_mvm_send_cmd_pdu(mvm, 801 iwl_cmd_id(LOW_LATENCY_CMD, 802 MAC_CONF_GROUP, 0), 803 0, sizeof(cmd), &cmd); 804 if (res) 805 IWL_ERR(mvm, "Failed to send low latency command\n"); 806 } 807 808 res = iwl_mvm_update_quotas(mvm, false, NULL); 809 if (res) 810 return res; 811 812 iwl_mvm_bt_coex_vif_change(mvm); 813 814 return iwl_mvm_power_update_mac(mvm); 815 } 816 817 struct iwl_mvm_low_latency_iter { 818 bool result; 819 bool result_per_band[NUM_NL80211_BANDS]; 820 }; 821 822 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 823 { 824 struct iwl_mvm_low_latency_iter *result = _data; 825 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 826 enum nl80211_band band; 827 828 if (iwl_mvm_vif_low_latency(mvmvif)) { 829 result->result = true; 830 831 if (!mvmvif->phy_ctxt) 832 return; 833 834 band = mvmvif->phy_ctxt->channel->band; 835 result->result_per_band[band] = true; 836 } 837 } 838 839 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 840 { 841 struct iwl_mvm_low_latency_iter data = {}; 842 843 ieee80211_iterate_active_interfaces_atomic( 844 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 845 iwl_mvm_ll_iter, &data); 846 847 return data.result; 848 } 849 850 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 851 { 852 struct iwl_mvm_low_latency_iter data = {}; 853 854 ieee80211_iterate_active_interfaces_atomic( 855 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 856 iwl_mvm_ll_iter, &data); 857 858 return data.result_per_band[band]; 859 } 860 861 struct iwl_bss_iter_data { 862 struct ieee80211_vif *vif; 863 bool error; 864 }; 865 866 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 867 struct ieee80211_vif *vif) 868 { 869 struct iwl_bss_iter_data *data = _data; 870 871 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 872 return; 873 874 if (data->vif) { 875 data->error = true; 876 return; 877 } 878 879 data->vif = vif; 880 } 881 882 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 883 { 884 struct iwl_bss_iter_data bss_iter_data = {}; 885 886 ieee80211_iterate_active_interfaces_atomic( 887 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 888 iwl_mvm_bss_iface_iterator, &bss_iter_data); 889 890 if (bss_iter_data.error) { 891 IWL_ERR(mvm, "More than one managed interface active!\n"); 892 return ERR_PTR(-EINVAL); 893 } 894 895 return bss_iter_data.vif; 896 } 897 898 struct iwl_sta_iter_data { 899 bool assoc; 900 }; 901 902 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 903 struct ieee80211_vif *vif) 904 { 905 struct iwl_sta_iter_data *data = _data; 906 907 if (vif->type != NL80211_IFTYPE_STATION) 908 return; 909 910 if (vif->bss_conf.assoc) 911 data->assoc = true; 912 } 913 914 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 915 { 916 struct iwl_sta_iter_data data = { 917 .assoc = false, 918 }; 919 920 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 921 IEEE80211_IFACE_ITER_NORMAL, 922 iwl_mvm_sta_iface_iterator, 923 &data); 924 return data.assoc; 925 } 926 927 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 928 struct ieee80211_vif *vif, 929 bool tdls, bool cmd_q) 930 { 931 struct iwl_fw_dbg_trigger_tlv *trigger; 932 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 933 unsigned int default_timeout = 934 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout; 935 936 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 937 /* 938 * We can't know when the station is asleep or awake, so we 939 * must disable the queue hang detection. 940 */ 941 if (fw_has_capa(&mvm->fw->ucode_capa, 942 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 943 vif && vif->type == NL80211_IFTYPE_AP) 944 return IWL_WATCHDOG_DISABLED; 945 return iwlmvm_mod_params.tfd_q_hang_detect ? 946 default_timeout : IWL_WATCHDOG_DISABLED; 947 } 948 949 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 950 txq_timer = (void *)trigger->data; 951 952 if (tdls) 953 return le32_to_cpu(txq_timer->tdls); 954 955 if (cmd_q) 956 return le32_to_cpu(txq_timer->command_queue); 957 958 if (WARN_ON(!vif)) 959 return default_timeout; 960 961 switch (ieee80211_vif_type_p2p(vif)) { 962 case NL80211_IFTYPE_ADHOC: 963 return le32_to_cpu(txq_timer->ibss); 964 case NL80211_IFTYPE_STATION: 965 return le32_to_cpu(txq_timer->bss); 966 case NL80211_IFTYPE_AP: 967 return le32_to_cpu(txq_timer->softap); 968 case NL80211_IFTYPE_P2P_CLIENT: 969 return le32_to_cpu(txq_timer->p2p_client); 970 case NL80211_IFTYPE_P2P_GO: 971 return le32_to_cpu(txq_timer->p2p_go); 972 case NL80211_IFTYPE_P2P_DEVICE: 973 return le32_to_cpu(txq_timer->p2p_device); 974 case NL80211_IFTYPE_MONITOR: 975 return default_timeout; 976 default: 977 WARN_ON(1); 978 return mvm->cfg->base_params->wd_timeout; 979 } 980 } 981 982 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 983 const char *errmsg) 984 { 985 struct iwl_fw_dbg_trigger_tlv *trig; 986 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 987 988 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 989 FW_DBG_TRIGGER_MLME); 990 if (!trig) 991 goto out; 992 993 trig_mlme = (void *)trig->data; 994 995 if (trig_mlme->stop_connection_loss && 996 --trig_mlme->stop_connection_loss) 997 goto out; 998 999 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 1000 1001 out: 1002 ieee80211_connection_loss(vif); 1003 } 1004 1005 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 1006 struct ieee80211_vif *vif, 1007 const struct ieee80211_sta *sta, 1008 u16 tid) 1009 { 1010 struct iwl_fw_dbg_trigger_tlv *trig; 1011 struct iwl_fw_dbg_trigger_ba *ba_trig; 1012 1013 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1014 FW_DBG_TRIGGER_BA); 1015 if (!trig) 1016 return; 1017 1018 ba_trig = (void *)trig->data; 1019 1020 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1021 return; 1022 1023 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1024 "Frame from %pM timed out, tid %d", 1025 sta->addr, tid); 1026 } 1027 1028 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1029 { 1030 if (!elapsed) 1031 return 0; 1032 1033 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1034 } 1035 1036 static enum iwl_mvm_traffic_load 1037 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1038 { 1039 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1040 1041 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1042 return IWL_MVM_TRAFFIC_HIGH; 1043 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1044 return IWL_MVM_TRAFFIC_MEDIUM; 1045 1046 return IWL_MVM_TRAFFIC_LOW; 1047 } 1048 1049 struct iwl_mvm_tcm_iter_data { 1050 struct iwl_mvm *mvm; 1051 bool any_sent; 1052 }; 1053 1054 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1055 { 1056 struct iwl_mvm_tcm_iter_data *data = _data; 1057 struct iwl_mvm *mvm = data->mvm; 1058 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1059 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1060 1061 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1062 return; 1063 1064 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1065 1066 if (!mvm->tcm.result.change[mvmvif->id] && 1067 prev == low_latency) { 1068 iwl_mvm_update_quotas(mvm, false, NULL); 1069 return; 1070 } 1071 1072 if (prev != low_latency) { 1073 /* this sends traffic load and updates quota as well */ 1074 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1075 LOW_LATENCY_TRAFFIC); 1076 } else { 1077 iwl_mvm_update_quotas(mvm, false, NULL); 1078 } 1079 1080 data->any_sent = true; 1081 } 1082 1083 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1084 { 1085 struct iwl_mvm_tcm_iter_data data = { 1086 .mvm = mvm, 1087 .any_sent = false, 1088 }; 1089 1090 mutex_lock(&mvm->mutex); 1091 1092 ieee80211_iterate_active_interfaces( 1093 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1094 iwl_mvm_tcm_iter, &data); 1095 1096 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1097 iwl_mvm_config_scan(mvm); 1098 1099 mutex_unlock(&mvm->mutex); 1100 } 1101 1102 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1103 { 1104 struct iwl_mvm *mvm; 1105 struct iwl_mvm_vif *mvmvif; 1106 struct ieee80211_vif *vif; 1107 1108 mvmvif = container_of(wk, struct iwl_mvm_vif, 1109 uapsd_nonagg_detected_wk.work); 1110 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1111 mvm = mvmvif->mvm; 1112 1113 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1114 return; 1115 1116 /* remember that this AP is broken */ 1117 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1118 vif->bss_conf.bssid, ETH_ALEN); 1119 mvm->uapsd_noagg_bssid_write_idx++; 1120 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1121 mvm->uapsd_noagg_bssid_write_idx = 0; 1122 1123 iwl_mvm_connection_loss(mvm, vif, 1124 "AP isn't using AMPDU with uAPSD enabled"); 1125 } 1126 1127 static void iwl_mvm_uapsd_agg_disconnect_iter(void *data, u8 *mac, 1128 struct ieee80211_vif *vif) 1129 { 1130 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1131 struct iwl_mvm *mvm = mvmvif->mvm; 1132 int *mac_id = data; 1133 1134 if (vif->type != NL80211_IFTYPE_STATION) 1135 return; 1136 1137 if (mvmvif->id != *mac_id) 1138 return; 1139 1140 if (!vif->bss_conf.assoc) 1141 return; 1142 1143 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1144 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1145 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1146 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1147 return; 1148 1149 if (mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected) 1150 return; 1151 1152 mvm->tcm.data[*mac_id].uapsd_nonagg_detect.detected = true; 1153 IWL_INFO(mvm, 1154 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1155 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1156 } 1157 1158 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1159 unsigned int elapsed, 1160 int mac) 1161 { 1162 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1163 u64 tpt; 1164 unsigned long rate; 1165 1166 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1167 1168 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1169 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1170 return; 1171 1172 if (iwl_mvm_has_new_rx_api(mvm)) { 1173 tpt = 8 * bytes; /* kbps */ 1174 do_div(tpt, elapsed); 1175 rate *= 1000; /* kbps */ 1176 if (tpt < 22 * rate / 100) 1177 return; 1178 } else { 1179 /* 1180 * the rate here is actually the threshold, in 100Kbps units, 1181 * so do the needed conversion from bytes to 100Kbps: 1182 * 100kb = bits / (100 * 1000), 1183 * 100kbps = 100kb / (msecs / 1000) == 1184 * (bits / (100 * 1000)) / (msecs / 1000) == 1185 * bits / (100 * msecs) 1186 */ 1187 tpt = (8 * bytes); 1188 do_div(tpt, elapsed * 100); 1189 if (tpt < rate) 1190 return; 1191 } 1192 1193 ieee80211_iterate_active_interfaces_atomic( 1194 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1195 iwl_mvm_uapsd_agg_disconnect_iter, &mac); 1196 } 1197 1198 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1199 struct ieee80211_vif *vif) 1200 { 1201 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1202 u32 *band = _data; 1203 1204 if (!mvmvif->phy_ctxt) 1205 return; 1206 1207 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1208 } 1209 1210 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1211 unsigned long ts, 1212 bool handle_uapsd) 1213 { 1214 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1215 unsigned int uapsd_elapsed = 1216 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1217 u32 total_airtime = 0; 1218 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1219 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1220 int ac, mac, i; 1221 bool low_latency = false; 1222 enum iwl_mvm_traffic_load load, band_load; 1223 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1224 1225 if (handle_ll) 1226 mvm->tcm.ll_ts = ts; 1227 if (handle_uapsd) 1228 mvm->tcm.uapsd_nonagg_ts = ts; 1229 1230 mvm->tcm.result.elapsed = elapsed; 1231 1232 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1233 IEEE80211_IFACE_ITER_NORMAL, 1234 iwl_mvm_tcm_iterator, 1235 &band); 1236 1237 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1238 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1239 u32 vo_vi_pkts = 0; 1240 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1241 1242 total_airtime += airtime; 1243 band_airtime[band[mac]] += airtime; 1244 1245 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1246 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1247 mvm->tcm.result.load[mac] = load; 1248 mvm->tcm.result.airtime[mac] = airtime; 1249 1250 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1251 vo_vi_pkts += mdata->rx.pkts[ac] + 1252 mdata->tx.pkts[ac]; 1253 1254 /* enable immediately with enough packets but defer disabling */ 1255 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1256 mvm->tcm.result.low_latency[mac] = true; 1257 else if (handle_ll) 1258 mvm->tcm.result.low_latency[mac] = false; 1259 1260 if (handle_ll) { 1261 /* clear old data */ 1262 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1263 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1264 } 1265 low_latency |= mvm->tcm.result.low_latency[mac]; 1266 1267 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1268 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1269 mac); 1270 /* clear old data */ 1271 if (handle_uapsd) 1272 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1273 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1274 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1275 } 1276 1277 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1278 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load; 1279 mvm->tcm.result.global_load = load; 1280 1281 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1282 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1283 mvm->tcm.result.band_load[i] = band_load; 1284 } 1285 1286 /* 1287 * If the current load isn't low we need to force re-evaluation 1288 * in the TCM period, so that we can return to low load if there 1289 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1290 * triggered by traffic). 1291 */ 1292 if (load != IWL_MVM_TRAFFIC_LOW) 1293 return MVM_TCM_PERIOD; 1294 /* 1295 * If low-latency is active we need to force re-evaluation after 1296 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1297 * when there's no traffic at all. 1298 */ 1299 if (low_latency) 1300 return MVM_LL_PERIOD; 1301 /* 1302 * Otherwise, we don't need to run the work struct because we're 1303 * in the default "idle" state - traffic indication is low (which 1304 * also covers the "no traffic" case) and low-latency is disabled 1305 * so there's no state that may need to be disabled when there's 1306 * no traffic at all. 1307 * 1308 * Note that this has no impact on the regular scheduling of the 1309 * updates triggered by traffic - those happen whenever one of the 1310 * two timeouts expire (if there's traffic at all.) 1311 */ 1312 return 0; 1313 } 1314 1315 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1316 { 1317 unsigned long ts = jiffies; 1318 bool handle_uapsd = 1319 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1320 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1321 1322 spin_lock(&mvm->tcm.lock); 1323 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1324 spin_unlock(&mvm->tcm.lock); 1325 return; 1326 } 1327 spin_unlock(&mvm->tcm.lock); 1328 1329 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1330 mutex_lock(&mvm->mutex); 1331 if (iwl_mvm_request_statistics(mvm, true)) 1332 handle_uapsd = false; 1333 mutex_unlock(&mvm->mutex); 1334 } 1335 1336 spin_lock(&mvm->tcm.lock); 1337 /* re-check if somebody else won the recheck race */ 1338 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1339 /* calculate statistics */ 1340 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1341 handle_uapsd); 1342 1343 /* the memset needs to be visible before the timestamp */ 1344 smp_mb(); 1345 mvm->tcm.ts = ts; 1346 if (work_delay) 1347 schedule_delayed_work(&mvm->tcm.work, work_delay); 1348 } 1349 spin_unlock(&mvm->tcm.lock); 1350 1351 iwl_mvm_tcm_results(mvm); 1352 } 1353 1354 void iwl_mvm_tcm_work(struct work_struct *work) 1355 { 1356 struct delayed_work *delayed_work = to_delayed_work(work); 1357 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1358 tcm.work); 1359 1360 iwl_mvm_recalc_tcm(mvm); 1361 } 1362 1363 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1364 { 1365 spin_lock_bh(&mvm->tcm.lock); 1366 mvm->tcm.paused = true; 1367 spin_unlock_bh(&mvm->tcm.lock); 1368 if (with_cancel) 1369 cancel_delayed_work_sync(&mvm->tcm.work); 1370 } 1371 1372 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1373 { 1374 int mac; 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 /* The TCM data needs to be reset before "paused" flag changes */ 1388 smp_mb(); 1389 mvm->tcm.paused = false; 1390 spin_unlock_bh(&mvm->tcm.lock); 1391 } 1392 1393 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1394 { 1395 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1396 1397 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1398 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1399 } 1400 1401 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1402 { 1403 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1404 1405 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1406 } 1407 1408 1409 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1410 { 1411 bool ps_disabled; 1412 1413 lockdep_assert_held(&mvm->mutex); 1414 1415 /* Disable power save when reading GP2 */ 1416 ps_disabled = mvm->ps_disabled; 1417 if (!ps_disabled) { 1418 mvm->ps_disabled = true; 1419 iwl_mvm_power_update_device(mvm); 1420 } 1421 1422 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); 1423 *boottime = ktime_get_boot_ns(); 1424 1425 if (!ps_disabled) { 1426 mvm->ps_disabled = ps_disabled; 1427 iwl_mvm_power_update_device(mvm); 1428 } 1429 } 1430