1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "iwl-debug.h" 10 #include "iwl-io.h" 11 #include "iwl-prph.h" 12 #include "iwl-csr.h" 13 #include "mvm.h" 14 #include "fw/api/rs.h" 15 #include "fw/img.h" 16 17 /* 18 * Will return 0 even if the cmd failed when RFKILL is asserted unless 19 * CMD_WANT_SKB is set in cmd->flags. 20 */ 21 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 22 { 23 int ret; 24 25 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 26 if (WARN_ON(mvm->d3_test_active)) 27 return -EIO; 28 #endif 29 30 /* 31 * Synchronous commands from this op-mode must hold 32 * the mutex, this ensures we don't try to send two 33 * (or more) synchronous commands at a time. 34 */ 35 if (!(cmd->flags & CMD_ASYNC)) 36 lockdep_assert_held(&mvm->mutex); 37 38 ret = iwl_trans_send_cmd(mvm->trans, cmd); 39 40 /* 41 * If the caller wants the SKB, then don't hide any problems, the 42 * caller might access the response buffer which will be NULL if 43 * the command failed. 44 */ 45 if (cmd->flags & CMD_WANT_SKB) 46 return ret; 47 48 /* 49 * Silently ignore failures if RFKILL is asserted or 50 * we are in suspend\resume process 51 */ 52 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN) 53 return 0; 54 return ret; 55 } 56 57 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 58 u32 flags, u16 len, const void *data) 59 { 60 struct iwl_host_cmd cmd = { 61 .id = id, 62 .len = { len, }, 63 .data = { data, }, 64 .flags = flags, 65 }; 66 67 return iwl_mvm_send_cmd(mvm, &cmd); 68 } 69 70 /* 71 * We assume that the caller set the status to the success value 72 */ 73 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 74 u32 *status) 75 { 76 struct iwl_rx_packet *pkt; 77 struct iwl_cmd_response *resp; 78 int ret, resp_len; 79 80 lockdep_assert_held(&mvm->mutex); 81 82 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 83 if (WARN_ON(mvm->d3_test_active)) 84 return -EIO; 85 #endif 86 87 /* 88 * Only synchronous commands can wait for status, 89 * we use WANT_SKB so the caller can't. 90 */ 91 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 92 "cmd flags %x", cmd->flags)) 93 return -EINVAL; 94 95 cmd->flags |= CMD_WANT_SKB; 96 97 ret = iwl_trans_send_cmd(mvm->trans, cmd); 98 if (ret == -ERFKILL) { 99 /* 100 * The command failed because of RFKILL, don't update 101 * the status, leave it as success and return 0. 102 */ 103 return 0; 104 } else if (ret) { 105 return ret; 106 } 107 108 pkt = cmd->resp_pkt; 109 110 resp_len = iwl_rx_packet_payload_len(pkt); 111 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 112 ret = -EIO; 113 goto out_free_resp; 114 } 115 116 resp = (void *)pkt->data; 117 *status = le32_to_cpu(resp->status); 118 out_free_resp: 119 iwl_free_resp(cmd); 120 return ret; 121 } 122 123 /* 124 * We assume that the caller set the status to the sucess value 125 */ 126 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 127 const void *data, u32 *status) 128 { 129 struct iwl_host_cmd cmd = { 130 .id = id, 131 .len = { len, }, 132 .data = { data, }, 133 }; 134 135 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 136 } 137 138 #define IWL_DECLARE_RATE_INFO(r) \ 139 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP 140 141 /* 142 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP 143 */ 144 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { 145 IWL_DECLARE_RATE_INFO(1), 146 IWL_DECLARE_RATE_INFO(2), 147 IWL_DECLARE_RATE_INFO(5), 148 IWL_DECLARE_RATE_INFO(11), 149 IWL_DECLARE_RATE_INFO(6), 150 IWL_DECLARE_RATE_INFO(9), 151 IWL_DECLARE_RATE_INFO(12), 152 IWL_DECLARE_RATE_INFO(18), 153 IWL_DECLARE_RATE_INFO(24), 154 IWL_DECLARE_RATE_INFO(36), 155 IWL_DECLARE_RATE_INFO(48), 156 IWL_DECLARE_RATE_INFO(54), 157 }; 158 159 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 160 enum nl80211_band band) 161 { 162 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 163 int idx; 164 int band_offset = 0; 165 166 /* Legacy rate format, search for match in table */ 167 if (band != NL80211_BAND_2GHZ) 168 band_offset = IWL_FIRST_OFDM_RATE; 169 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 170 if (fw_rate_idx_to_plcp[idx] == rate) 171 return idx - band_offset; 172 173 return -1; 174 } 175 176 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) 177 { 178 /* Get PLCP rate for tx_cmd->rate_n_flags */ 179 return fw_rate_idx_to_plcp[rate_idx]; 180 } 181 182 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 183 { 184 static const u8 mac80211_ac_to_ucode_ac[] = { 185 AC_VO, 186 AC_VI, 187 AC_BE, 188 AC_BK 189 }; 190 191 return mac80211_ac_to_ucode_ac[ac]; 192 } 193 194 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 195 { 196 struct iwl_rx_packet *pkt = rxb_addr(rxb); 197 struct iwl_error_resp *err_resp = (void *)pkt->data; 198 199 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 200 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 201 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 202 le16_to_cpu(err_resp->bad_cmd_seq_num), 203 le32_to_cpu(err_resp->error_service)); 204 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 205 le64_to_cpu(err_resp->timestamp)); 206 } 207 208 /* 209 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 210 * The parameter should also be a combination of ANT_[ABC]. 211 */ 212 u8 first_antenna(u8 mask) 213 { 214 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 215 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 216 return BIT(0); 217 return BIT(ffs(mask) - 1); 218 } 219 220 /* 221 * Toggles between TX antennas to send the probe request on. 222 * Receives the bitmask of valid TX antennas and the *index* used 223 * for the last TX, and returns the next valid *index* to use. 224 * In order to set it in the tx_cmd, must do BIT(idx). 225 */ 226 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 227 { 228 u8 ind = last_idx; 229 int i; 230 231 for (i = 0; i < MAX_ANT_NUM; i++) { 232 ind = (ind + 1) % MAX_ANT_NUM; 233 if (valid & BIT(ind)) 234 return ind; 235 } 236 237 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 238 return last_idx; 239 } 240 241 /* 242 * Note: This structure is read from the device with IO accesses, 243 * and the reading already does the endian conversion. As it is 244 * read with u32-sized accesses, any members with a different size 245 * need to be ordered correctly though! 246 */ 247 struct iwl_error_event_table_v1 { 248 u32 valid; /* (nonzero) valid, (0) log is empty */ 249 u32 error_id; /* type of error */ 250 u32 pc; /* program counter */ 251 u32 blink1; /* branch link */ 252 u32 blink2; /* branch link */ 253 u32 ilink1; /* interrupt link */ 254 u32 ilink2; /* interrupt link */ 255 u32 data1; /* error-specific data */ 256 u32 data2; /* error-specific data */ 257 u32 data3; /* error-specific data */ 258 u32 bcon_time; /* beacon timer */ 259 u32 tsf_low; /* network timestamp function timer */ 260 u32 tsf_hi; /* network timestamp function timer */ 261 u32 gp1; /* GP1 timer register */ 262 u32 gp2; /* GP2 timer register */ 263 u32 gp3; /* GP3 timer register */ 264 u32 ucode_ver; /* uCode version */ 265 u32 hw_ver; /* HW Silicon version */ 266 u32 brd_ver; /* HW board version */ 267 u32 log_pc; /* log program counter */ 268 u32 frame_ptr; /* frame pointer */ 269 u32 stack_ptr; /* stack pointer */ 270 u32 hcmd; /* last host command header */ 271 u32 isr0; /* isr status register LMPM_NIC_ISR0: 272 * rxtx_flag */ 273 u32 isr1; /* isr status register LMPM_NIC_ISR1: 274 * host_flag */ 275 u32 isr2; /* isr status register LMPM_NIC_ISR2: 276 * enc_flag */ 277 u32 isr3; /* isr status register LMPM_NIC_ISR3: 278 * time_flag */ 279 u32 isr4; /* isr status register LMPM_NIC_ISR4: 280 * wico interrupt */ 281 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ 282 u32 wait_event; /* wait event() caller address */ 283 u32 l2p_control; /* L2pControlField */ 284 u32 l2p_duration; /* L2pDurationField */ 285 u32 l2p_mhvalid; /* L2pMhValidBits */ 286 u32 l2p_addr_match; /* L2pAddrMatchStat */ 287 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 288 * (LMPM_PMG_SEL) */ 289 u32 u_timestamp; /* indicate when the date and time of the 290 * compilation */ 291 u32 flow_handler; /* FH read/write pointers, RX credit */ 292 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; 293 294 struct iwl_error_event_table { 295 u32 valid; /* (nonzero) valid, (0) log is empty */ 296 u32 error_id; /* type of error */ 297 u32 trm_hw_status0; /* TRM HW status */ 298 u32 trm_hw_status1; /* TRM HW status */ 299 u32 blink2; /* branch link */ 300 u32 ilink1; /* interrupt link */ 301 u32 ilink2; /* interrupt link */ 302 u32 data1; /* error-specific data */ 303 u32 data2; /* error-specific data */ 304 u32 data3; /* error-specific data */ 305 u32 bcon_time; /* beacon timer */ 306 u32 tsf_low; /* network timestamp function timer */ 307 u32 tsf_hi; /* network timestamp function timer */ 308 u32 gp1; /* GP1 timer register */ 309 u32 gp2; /* GP2 timer register */ 310 u32 fw_rev_type; /* firmware revision type */ 311 u32 major; /* uCode version major */ 312 u32 minor; /* uCode version minor */ 313 u32 hw_ver; /* HW Silicon version */ 314 u32 brd_ver; /* HW board version */ 315 u32 log_pc; /* log program counter */ 316 u32 frame_ptr; /* frame pointer */ 317 u32 stack_ptr; /* stack pointer */ 318 u32 hcmd; /* last host command header */ 319 u32 isr0; /* isr status register LMPM_NIC_ISR0: 320 * rxtx_flag */ 321 u32 isr1; /* isr status register LMPM_NIC_ISR1: 322 * host_flag */ 323 u32 isr2; /* isr status register LMPM_NIC_ISR2: 324 * enc_flag */ 325 u32 isr3; /* isr status register LMPM_NIC_ISR3: 326 * time_flag */ 327 u32 isr4; /* isr status register LMPM_NIC_ISR4: 328 * wico interrupt */ 329 u32 last_cmd_id; /* last HCMD id handled by the firmware */ 330 u32 wait_event; /* wait event() caller address */ 331 u32 l2p_control; /* L2pControlField */ 332 u32 l2p_duration; /* L2pDurationField */ 333 u32 l2p_mhvalid; /* L2pMhValidBits */ 334 u32 l2p_addr_match; /* L2pAddrMatchStat */ 335 u32 lmpm_pmg_sel; /* indicate which clocks are turned on 336 * (LMPM_PMG_SEL) */ 337 u32 u_timestamp; /* indicate when the date and time of the 338 * compilation */ 339 u32 flow_handler; /* FH read/write pointers, RX credit */ 340 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; 341 342 /* 343 * UMAC error struct - relevant starting from family 8000 chip. 344 * Note: This structure is read from the device with IO accesses, 345 * and the reading already does the endian conversion. As it is 346 * read with u32-sized accesses, any members with a different size 347 * need to be ordered correctly though! 348 */ 349 struct iwl_umac_error_event_table { 350 u32 valid; /* (nonzero) valid, (0) log is empty */ 351 u32 error_id; /* type of error */ 352 u32 blink1; /* branch link */ 353 u32 blink2; /* branch link */ 354 u32 ilink1; /* interrupt link */ 355 u32 ilink2; /* interrupt link */ 356 u32 data1; /* error-specific data */ 357 u32 data2; /* error-specific data */ 358 u32 data3; /* error-specific data */ 359 u32 umac_major; 360 u32 umac_minor; 361 u32 frame_pointer; /* core register 27*/ 362 u32 stack_pointer; /* core register 28 */ 363 u32 cmd_header; /* latest host cmd sent to UMAC */ 364 u32 nic_isr_pref; /* ISR status register */ 365 } __packed; 366 367 #define ERROR_START_OFFSET (1 * sizeof(u32)) 368 #define ERROR_ELEM_SIZE (7 * sizeof(u32)) 369 370 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) 371 { 372 struct iwl_trans *trans = mvm->trans; 373 struct iwl_umac_error_event_table table = {}; 374 u32 base = mvm->trans->dbg.umac_error_event_table; 375 376 if (!base && 377 !(mvm->trans->dbg.error_event_table_tlv_status & 378 IWL_ERROR_EVENT_TABLE_UMAC)) 379 return; 380 381 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 382 383 if (table.valid) 384 mvm->fwrt.dump.umac_err_id = table.error_id; 385 386 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 387 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 388 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 389 mvm->status, table.valid); 390 } 391 392 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, 393 iwl_fw_lookup_assert_desc(table.error_id)); 394 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); 395 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); 396 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); 397 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); 398 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); 399 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); 400 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); 401 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); 402 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); 403 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); 404 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); 405 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); 406 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); 407 } 408 409 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num) 410 { 411 struct iwl_trans *trans = mvm->trans; 412 struct iwl_error_event_table table = {}; 413 u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num]; 414 415 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { 416 if (!base) 417 base = mvm->fw->init_errlog_ptr; 418 } else { 419 if (!base) 420 base = mvm->fw->inst_errlog_ptr; 421 } 422 423 if (base < 0x400000) { 424 IWL_ERR(mvm, 425 "Not valid error log pointer 0x%08X for %s uCode\n", 426 base, 427 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) 428 ? "Init" : "RT"); 429 return; 430 } 431 432 /* check if there is a HW error */ 433 val = iwl_trans_read_mem32(trans, base); 434 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { 435 int err; 436 437 IWL_ERR(trans, "HW error, resetting before reading\n"); 438 439 /* reset the device */ 440 iwl_trans_sw_reset(trans); 441 442 err = iwl_finish_nic_init(trans, trans->trans_cfg); 443 if (err) 444 return; 445 } 446 447 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); 448 449 if (table.valid) 450 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id; 451 452 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { 453 IWL_ERR(trans, "Start IWL Error Log Dump:\n"); 454 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", 455 mvm->status, table.valid); 456 } 457 458 /* Do not change this output - scripts rely on it */ 459 460 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); 461 462 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, 463 iwl_fw_lookup_assert_desc(table.error_id)); 464 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); 465 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); 466 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); 467 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); 468 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); 469 IWL_ERR(mvm, "0x%08X | data1\n", table.data1); 470 IWL_ERR(mvm, "0x%08X | data2\n", table.data2); 471 IWL_ERR(mvm, "0x%08X | data3\n", table.data3); 472 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); 473 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); 474 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); 475 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); 476 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); 477 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type); 478 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major); 479 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor); 480 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); 481 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); 482 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); 483 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); 484 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); 485 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 486 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3); 487 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4); 488 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id); 489 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event); 490 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control); 491 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration); 492 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); 493 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); 494 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); 495 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp); 496 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler); 497 } 498 499 static void iwl_mvm_dump_iml_error_log(struct iwl_mvm *mvm) 500 { 501 struct iwl_trans *trans = mvm->trans; 502 u32 error, data1; 503 504 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { 505 error = UMAG_SB_CPU_2_STATUS; 506 data1 = UMAG_SB_CPU_1_STATUS; 507 } else if (mvm->trans->trans_cfg->device_family >= 508 IWL_DEVICE_FAMILY_8000) { 509 error = SB_CPU_2_STATUS; 510 data1 = SB_CPU_1_STATUS; 511 } else { 512 return; 513 } 514 515 error = iwl_read_umac_prph(trans, UMAG_SB_CPU_2_STATUS); 516 517 IWL_ERR(trans, "IML/ROM dump:\n"); 518 519 if (error & 0xFFFF0000) 520 IWL_ERR(trans, "0x%04X | IML/ROM SYSASSERT\n", error >> 16); 521 522 IWL_ERR(mvm, "0x%08X | IML/ROM error/state\n", error); 523 IWL_ERR(mvm, "0x%08X | IML/ROM data1\n", 524 iwl_read_umac_prph(trans, data1)); 525 526 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) 527 IWL_ERR(mvm, "0x%08X | IML/ROM WFPM_AUTH_KEY_0\n", 528 iwl_read_umac_prph(trans, SB_MODIFY_CFG_FLAG)); 529 } 530 531 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) 532 { 533 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 534 IWL_ERR(mvm, 535 "DEVICE_ENABLED bit is not set. Aborting dump.\n"); 536 return; 537 } 538 539 iwl_mvm_dump_lmac_error_log(mvm, 0); 540 541 if (mvm->trans->dbg.lmac_error_event_table[1]) 542 iwl_mvm_dump_lmac_error_log(mvm, 1); 543 544 iwl_mvm_dump_umac_error_log(mvm); 545 546 iwl_mvm_dump_iml_error_log(mvm); 547 548 iwl_fw_error_print_fseq_regs(&mvm->fwrt); 549 } 550 551 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id, 552 int tid, int frame_limit, u16 ssn) 553 { 554 struct iwl_scd_txq_cfg_cmd cmd = { 555 .scd_queue = queue, 556 .action = SCD_CFG_ENABLE_QUEUE, 557 .window = frame_limit, 558 .sta_id = sta_id, 559 .ssn = cpu_to_le16(ssn), 560 .tx_fifo = fifo, 561 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 562 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 563 .tid = tid, 564 }; 565 int ret; 566 567 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 568 return -EINVAL; 569 570 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 571 "Trying to reconfig unallocated queue %d\n", queue)) 572 return -ENXIO; 573 574 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 575 576 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 577 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 578 queue, fifo, ret); 579 580 return ret; 581 } 582 583 /** 584 * iwl_mvm_send_lq_cmd() - Send link quality command 585 * @mvm: Driver data. 586 * @lq: Link quality command to send. 587 * 588 * The link quality command is sent as the last step of station creation. 589 * This is the special case in which init is set and we call a callback in 590 * this case to clear the state indicating that station creation is in 591 * progress. 592 */ 593 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 594 { 595 struct iwl_host_cmd cmd = { 596 .id = LQ_CMD, 597 .len = { sizeof(struct iwl_lq_cmd), }, 598 .flags = CMD_ASYNC, 599 .data = { lq, }, 600 }; 601 602 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 603 iwl_mvm_has_tlc_offload(mvm))) 604 return -EINVAL; 605 606 return iwl_mvm_send_cmd(mvm, &cmd); 607 } 608 609 /** 610 * iwl_mvm_update_smps - Get a request to change the SMPS mode 611 * @mvm: Driver data. 612 * @vif: Pointer to the ieee80211_vif structure 613 * @req_type: The part of the driver who call for a change. 614 * @smps_request: The request to change the SMPS mode. 615 * 616 * Get a requst to change the SMPS mode, 617 * and change it according to all other requests in the driver. 618 */ 619 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 620 enum iwl_mvm_smps_type_request req_type, 621 enum ieee80211_smps_mode smps_request) 622 { 623 struct iwl_mvm_vif *mvmvif; 624 enum ieee80211_smps_mode smps_mode; 625 int i; 626 627 lockdep_assert_held(&mvm->mutex); 628 629 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 630 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 631 return; 632 633 if (vif->type == NL80211_IFTYPE_AP) 634 smps_mode = IEEE80211_SMPS_OFF; 635 else 636 smps_mode = IEEE80211_SMPS_AUTOMATIC; 637 638 mvmvif = iwl_mvm_vif_from_mac80211(vif); 639 mvmvif->smps_requests[req_type] = smps_request; 640 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 641 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) { 642 smps_mode = IEEE80211_SMPS_STATIC; 643 break; 644 } 645 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 646 smps_mode = IEEE80211_SMPS_DYNAMIC; 647 } 648 649 ieee80211_request_smps(vif, smps_mode); 650 } 651 652 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 653 { 654 struct iwl_statistics_cmd scmd = { 655 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 656 }; 657 struct iwl_host_cmd cmd = { 658 .id = STATISTICS_CMD, 659 .len[0] = sizeof(scmd), 660 .data[0] = &scmd, 661 .flags = CMD_WANT_SKB, 662 }; 663 int ret; 664 665 ret = iwl_mvm_send_cmd(mvm, &cmd); 666 if (ret) 667 return ret; 668 669 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 670 iwl_free_resp(&cmd); 671 672 if (clear) 673 iwl_mvm_accu_radio_stats(mvm); 674 675 return 0; 676 } 677 678 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 679 { 680 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 681 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 682 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 683 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 684 } 685 686 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 687 struct ieee80211_vif *vif) 688 { 689 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 690 bool *result = _data; 691 int i; 692 693 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 694 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC || 695 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) 696 *result = false; 697 } 698 } 699 700 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm) 701 { 702 bool result = true; 703 704 lockdep_assert_held(&mvm->mutex); 705 706 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 707 return false; 708 709 if (mvm->cfg->rx_with_siso_diversity) 710 return false; 711 712 ieee80211_iterate_active_interfaces_atomic( 713 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 714 iwl_mvm_diversity_iter, &result); 715 716 return result; 717 } 718 719 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 720 bool low_latency, u16 mac_id) 721 { 722 struct iwl_mac_low_latency_cmd cmd = { 723 .mac_id = cpu_to_le32(mac_id) 724 }; 725 726 if (!fw_has_capa(&mvm->fw->ucode_capa, 727 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 728 return; 729 730 if (low_latency) { 731 /* currently we don't care about the direction */ 732 cmd.low_latency_rx = 1; 733 cmd.low_latency_tx = 1; 734 } 735 736 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD, 737 MAC_CONF_GROUP, 0), 738 0, sizeof(cmd), &cmd)) 739 IWL_ERR(mvm, "Failed to send low latency command\n"); 740 } 741 742 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 743 bool low_latency, 744 enum iwl_mvm_low_latency_cause cause) 745 { 746 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 747 int res; 748 bool prev; 749 750 lockdep_assert_held(&mvm->mutex); 751 752 prev = iwl_mvm_vif_low_latency(mvmvif); 753 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 754 755 low_latency = iwl_mvm_vif_low_latency(mvmvif); 756 757 if (low_latency == prev) 758 return 0; 759 760 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 761 762 res = iwl_mvm_update_quotas(mvm, false, NULL); 763 if (res) 764 return res; 765 766 iwl_mvm_bt_coex_vif_change(mvm); 767 768 return iwl_mvm_power_update_mac(mvm); 769 } 770 771 struct iwl_mvm_low_latency_iter { 772 bool result; 773 bool result_per_band[NUM_NL80211_BANDS]; 774 }; 775 776 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 777 { 778 struct iwl_mvm_low_latency_iter *result = _data; 779 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 780 enum nl80211_band band; 781 782 if (iwl_mvm_vif_low_latency(mvmvif)) { 783 result->result = true; 784 785 if (!mvmvif->phy_ctxt) 786 return; 787 788 band = mvmvif->phy_ctxt->channel->band; 789 result->result_per_band[band] = true; 790 } 791 } 792 793 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 794 { 795 struct iwl_mvm_low_latency_iter data = {}; 796 797 ieee80211_iterate_active_interfaces_atomic( 798 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 799 iwl_mvm_ll_iter, &data); 800 801 return data.result; 802 } 803 804 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 805 { 806 struct iwl_mvm_low_latency_iter data = {}; 807 808 ieee80211_iterate_active_interfaces_atomic( 809 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 810 iwl_mvm_ll_iter, &data); 811 812 return data.result_per_band[band]; 813 } 814 815 struct iwl_bss_iter_data { 816 struct ieee80211_vif *vif; 817 bool error; 818 }; 819 820 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 821 struct ieee80211_vif *vif) 822 { 823 struct iwl_bss_iter_data *data = _data; 824 825 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 826 return; 827 828 if (data->vif) { 829 data->error = true; 830 return; 831 } 832 833 data->vif = vif; 834 } 835 836 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 837 { 838 struct iwl_bss_iter_data bss_iter_data = {}; 839 840 ieee80211_iterate_active_interfaces_atomic( 841 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 842 iwl_mvm_bss_iface_iterator, &bss_iter_data); 843 844 if (bss_iter_data.error) { 845 IWL_ERR(mvm, "More than one managed interface active!\n"); 846 return ERR_PTR(-EINVAL); 847 } 848 849 return bss_iter_data.vif; 850 } 851 852 struct iwl_bss_find_iter_data { 853 struct ieee80211_vif *vif; 854 u32 macid; 855 }; 856 857 static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac, 858 struct ieee80211_vif *vif) 859 { 860 struct iwl_bss_find_iter_data *data = _data; 861 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 862 863 if (mvmvif->id == data->macid) 864 data->vif = vif; 865 } 866 867 struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid) 868 { 869 struct iwl_bss_find_iter_data data = { 870 .macid = macid, 871 }; 872 873 lockdep_assert_held(&mvm->mutex); 874 875 ieee80211_iterate_active_interfaces_atomic( 876 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 877 iwl_mvm_bss_find_iface_iterator, &data); 878 879 return data.vif; 880 } 881 882 struct iwl_sta_iter_data { 883 bool assoc; 884 }; 885 886 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 887 struct ieee80211_vif *vif) 888 { 889 struct iwl_sta_iter_data *data = _data; 890 891 if (vif->type != NL80211_IFTYPE_STATION) 892 return; 893 894 if (vif->bss_conf.assoc) 895 data->assoc = true; 896 } 897 898 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 899 { 900 struct iwl_sta_iter_data data = { 901 .assoc = false, 902 }; 903 904 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 905 IEEE80211_IFACE_ITER_NORMAL, 906 iwl_mvm_sta_iface_iterator, 907 &data); 908 return data.assoc; 909 } 910 911 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 912 struct ieee80211_vif *vif, 913 bool tdls, bool cmd_q) 914 { 915 struct iwl_fw_dbg_trigger_tlv *trigger; 916 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 917 unsigned int default_timeout = cmd_q ? 918 IWL_DEF_WD_TIMEOUT : 919 mvm->trans->trans_cfg->base_params->wd_timeout; 920 921 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 922 /* 923 * We can't know when the station is asleep or awake, so we 924 * must disable the queue hang detection. 925 */ 926 if (fw_has_capa(&mvm->fw->ucode_capa, 927 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 928 vif && vif->type == NL80211_IFTYPE_AP) 929 return IWL_WATCHDOG_DISABLED; 930 return default_timeout; 931 } 932 933 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 934 txq_timer = (void *)trigger->data; 935 936 if (tdls) 937 return le32_to_cpu(txq_timer->tdls); 938 939 if (cmd_q) 940 return le32_to_cpu(txq_timer->command_queue); 941 942 if (WARN_ON(!vif)) 943 return default_timeout; 944 945 switch (ieee80211_vif_type_p2p(vif)) { 946 case NL80211_IFTYPE_ADHOC: 947 return le32_to_cpu(txq_timer->ibss); 948 case NL80211_IFTYPE_STATION: 949 return le32_to_cpu(txq_timer->bss); 950 case NL80211_IFTYPE_AP: 951 return le32_to_cpu(txq_timer->softap); 952 case NL80211_IFTYPE_P2P_CLIENT: 953 return le32_to_cpu(txq_timer->p2p_client); 954 case NL80211_IFTYPE_P2P_GO: 955 return le32_to_cpu(txq_timer->p2p_go); 956 case NL80211_IFTYPE_P2P_DEVICE: 957 return le32_to_cpu(txq_timer->p2p_device); 958 case NL80211_IFTYPE_MONITOR: 959 return default_timeout; 960 default: 961 WARN_ON(1); 962 return mvm->trans->trans_cfg->base_params->wd_timeout; 963 } 964 } 965 966 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 967 const char *errmsg) 968 { 969 struct iwl_fw_dbg_trigger_tlv *trig; 970 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 971 972 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 973 FW_DBG_TRIGGER_MLME); 974 if (!trig) 975 goto out; 976 977 trig_mlme = (void *)trig->data; 978 979 if (trig_mlme->stop_connection_loss && 980 --trig_mlme->stop_connection_loss) 981 goto out; 982 983 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 984 985 out: 986 ieee80211_connection_loss(vif); 987 } 988 989 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 990 struct ieee80211_vif *vif, 991 const struct ieee80211_sta *sta, 992 u16 tid) 993 { 994 struct iwl_fw_dbg_trigger_tlv *trig; 995 struct iwl_fw_dbg_trigger_ba *ba_trig; 996 997 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 998 FW_DBG_TRIGGER_BA); 999 if (!trig) 1000 return; 1001 1002 ba_trig = (void *)trig->data; 1003 1004 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 1005 return; 1006 1007 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 1008 "Frame from %pM timed out, tid %d", 1009 sta->addr, tid); 1010 } 1011 1012 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 1013 { 1014 if (!elapsed) 1015 return 0; 1016 1017 return (100 * airtime / elapsed) / USEC_PER_MSEC; 1018 } 1019 1020 static enum iwl_mvm_traffic_load 1021 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 1022 { 1023 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 1024 1025 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 1026 return IWL_MVM_TRAFFIC_HIGH; 1027 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 1028 return IWL_MVM_TRAFFIC_MEDIUM; 1029 1030 return IWL_MVM_TRAFFIC_LOW; 1031 } 1032 1033 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 1034 { 1035 struct iwl_mvm *mvm = _data; 1036 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1037 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 1038 1039 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 1040 return; 1041 1042 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 1043 1044 if (!mvm->tcm.result.change[mvmvif->id] && 1045 prev == low_latency) { 1046 iwl_mvm_update_quotas(mvm, false, NULL); 1047 return; 1048 } 1049 1050 if (prev != low_latency) { 1051 /* this sends traffic load and updates quota as well */ 1052 iwl_mvm_update_low_latency(mvm, vif, low_latency, 1053 LOW_LATENCY_TRAFFIC); 1054 } else { 1055 iwl_mvm_update_quotas(mvm, false, NULL); 1056 } 1057 } 1058 1059 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 1060 { 1061 mutex_lock(&mvm->mutex); 1062 1063 ieee80211_iterate_active_interfaces( 1064 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1065 iwl_mvm_tcm_iter, mvm); 1066 1067 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1068 iwl_mvm_config_scan(mvm); 1069 1070 mutex_unlock(&mvm->mutex); 1071 } 1072 1073 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 1074 { 1075 struct iwl_mvm *mvm; 1076 struct iwl_mvm_vif *mvmvif; 1077 struct ieee80211_vif *vif; 1078 1079 mvmvif = container_of(wk, struct iwl_mvm_vif, 1080 uapsd_nonagg_detected_wk.work); 1081 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1082 mvm = mvmvif->mvm; 1083 1084 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 1085 return; 1086 1087 /* remember that this AP is broken */ 1088 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 1089 vif->bss_conf.bssid, ETH_ALEN); 1090 mvm->uapsd_noagg_bssid_write_idx++; 1091 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 1092 mvm->uapsd_noagg_bssid_write_idx = 0; 1093 1094 iwl_mvm_connection_loss(mvm, vif, 1095 "AP isn't using AMPDU with uAPSD enabled"); 1096 } 1097 1098 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 1099 struct ieee80211_vif *vif) 1100 { 1101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1102 1103 if (vif->type != NL80211_IFTYPE_STATION) 1104 return; 1105 1106 if (!vif->bss_conf.assoc) 1107 return; 1108 1109 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && 1110 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && 1111 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && 1112 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) 1113 return; 1114 1115 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 1116 return; 1117 1118 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 1119 IWL_INFO(mvm, 1120 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 1121 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ); 1122 } 1123 1124 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 1125 unsigned int elapsed, 1126 int mac) 1127 { 1128 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 1129 u64 tpt; 1130 unsigned long rate; 1131 struct ieee80211_vif *vif; 1132 1133 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 1134 1135 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 1136 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 1137 return; 1138 1139 if (iwl_mvm_has_new_rx_api(mvm)) { 1140 tpt = 8 * bytes; /* kbps */ 1141 do_div(tpt, elapsed); 1142 rate *= 1000; /* kbps */ 1143 if (tpt < 22 * rate / 100) 1144 return; 1145 } else { 1146 /* 1147 * the rate here is actually the threshold, in 100Kbps units, 1148 * so do the needed conversion from bytes to 100Kbps: 1149 * 100kb = bits / (100 * 1000), 1150 * 100kbps = 100kb / (msecs / 1000) == 1151 * (bits / (100 * 1000)) / (msecs / 1000) == 1152 * bits / (100 * msecs) 1153 */ 1154 tpt = (8 * bytes); 1155 do_div(tpt, elapsed * 100); 1156 if (tpt < rate) 1157 return; 1158 } 1159 1160 rcu_read_lock(); 1161 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 1162 if (vif) 1163 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 1164 rcu_read_unlock(); 1165 } 1166 1167 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 1168 struct ieee80211_vif *vif) 1169 { 1170 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1171 u32 *band = _data; 1172 1173 if (!mvmvif->phy_ctxt) 1174 return; 1175 1176 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band; 1177 } 1178 1179 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1180 unsigned long ts, 1181 bool handle_uapsd) 1182 { 1183 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1184 unsigned int uapsd_elapsed = 1185 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1186 u32 total_airtime = 0; 1187 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1188 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1189 int ac, mac, i; 1190 bool low_latency = false; 1191 enum iwl_mvm_traffic_load load, band_load; 1192 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1193 1194 if (handle_ll) 1195 mvm->tcm.ll_ts = ts; 1196 if (handle_uapsd) 1197 mvm->tcm.uapsd_nonagg_ts = ts; 1198 1199 mvm->tcm.result.elapsed = elapsed; 1200 1201 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1202 IEEE80211_IFACE_ITER_NORMAL, 1203 iwl_mvm_tcm_iterator, 1204 &band); 1205 1206 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1207 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1208 u32 vo_vi_pkts = 0; 1209 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1210 1211 total_airtime += airtime; 1212 band_airtime[band[mac]] += airtime; 1213 1214 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1215 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1216 mvm->tcm.result.load[mac] = load; 1217 mvm->tcm.result.airtime[mac] = airtime; 1218 1219 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1220 vo_vi_pkts += mdata->rx.pkts[ac] + 1221 mdata->tx.pkts[ac]; 1222 1223 /* enable immediately with enough packets but defer disabling */ 1224 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1225 mvm->tcm.result.low_latency[mac] = true; 1226 else if (handle_ll) 1227 mvm->tcm.result.low_latency[mac] = false; 1228 1229 if (handle_ll) { 1230 /* clear old data */ 1231 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1232 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1233 } 1234 low_latency |= mvm->tcm.result.low_latency[mac]; 1235 1236 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1237 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1238 mac); 1239 /* clear old data */ 1240 if (handle_uapsd) 1241 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1242 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1243 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1244 } 1245 1246 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1247 mvm->tcm.result.global_load = load; 1248 1249 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1250 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1251 mvm->tcm.result.band_load[i] = band_load; 1252 } 1253 1254 /* 1255 * If the current load isn't low we need to force re-evaluation 1256 * in the TCM period, so that we can return to low load if there 1257 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1258 * triggered by traffic). 1259 */ 1260 if (load != IWL_MVM_TRAFFIC_LOW) 1261 return MVM_TCM_PERIOD; 1262 /* 1263 * If low-latency is active we need to force re-evaluation after 1264 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1265 * when there's no traffic at all. 1266 */ 1267 if (low_latency) 1268 return MVM_LL_PERIOD; 1269 /* 1270 * Otherwise, we don't need to run the work struct because we're 1271 * in the default "idle" state - traffic indication is low (which 1272 * also covers the "no traffic" case) and low-latency is disabled 1273 * so there's no state that may need to be disabled when there's 1274 * no traffic at all. 1275 * 1276 * Note that this has no impact on the regular scheduling of the 1277 * updates triggered by traffic - those happen whenever one of the 1278 * two timeouts expire (if there's traffic at all.) 1279 */ 1280 return 0; 1281 } 1282 1283 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1284 { 1285 unsigned long ts = jiffies; 1286 bool handle_uapsd = 1287 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1288 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1289 1290 spin_lock(&mvm->tcm.lock); 1291 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1292 spin_unlock(&mvm->tcm.lock); 1293 return; 1294 } 1295 spin_unlock(&mvm->tcm.lock); 1296 1297 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1298 mutex_lock(&mvm->mutex); 1299 if (iwl_mvm_request_statistics(mvm, true)) 1300 handle_uapsd = false; 1301 mutex_unlock(&mvm->mutex); 1302 } 1303 1304 spin_lock(&mvm->tcm.lock); 1305 /* re-check if somebody else won the recheck race */ 1306 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1307 /* calculate statistics */ 1308 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1309 handle_uapsd); 1310 1311 /* the memset needs to be visible before the timestamp */ 1312 smp_mb(); 1313 mvm->tcm.ts = ts; 1314 if (work_delay) 1315 schedule_delayed_work(&mvm->tcm.work, work_delay); 1316 } 1317 spin_unlock(&mvm->tcm.lock); 1318 1319 iwl_mvm_tcm_results(mvm); 1320 } 1321 1322 void iwl_mvm_tcm_work(struct work_struct *work) 1323 { 1324 struct delayed_work *delayed_work = to_delayed_work(work); 1325 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1326 tcm.work); 1327 1328 iwl_mvm_recalc_tcm(mvm); 1329 } 1330 1331 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1332 { 1333 spin_lock_bh(&mvm->tcm.lock); 1334 mvm->tcm.paused = true; 1335 spin_unlock_bh(&mvm->tcm.lock); 1336 if (with_cancel) 1337 cancel_delayed_work_sync(&mvm->tcm.work); 1338 } 1339 1340 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1341 { 1342 int mac; 1343 bool low_latency = false; 1344 1345 spin_lock_bh(&mvm->tcm.lock); 1346 mvm->tcm.ts = jiffies; 1347 mvm->tcm.ll_ts = jiffies; 1348 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1349 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1350 1351 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1352 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1353 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1354 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1355 1356 if (mvm->tcm.result.low_latency[mac]) 1357 low_latency = true; 1358 } 1359 /* The TCM data needs to be reset before "paused" flag changes */ 1360 smp_mb(); 1361 mvm->tcm.paused = false; 1362 1363 /* 1364 * if the current load is not low or low latency is active, force 1365 * re-evaluation to cover the case of no traffic. 1366 */ 1367 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1368 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1369 else if (low_latency) 1370 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1371 1372 spin_unlock_bh(&mvm->tcm.lock); 1373 } 1374 1375 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1376 { 1377 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1378 1379 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1380 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1381 } 1382 1383 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1384 { 1385 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1386 1387 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1388 } 1389 1390 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1391 { 1392 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1393 1394 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1395 mvm->trans->cfg->gp2_reg_addr) 1396 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1397 1398 return iwl_read_prph(mvm->trans, reg_addr); 1399 } 1400 1401 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime) 1402 { 1403 bool ps_disabled; 1404 1405 lockdep_assert_held(&mvm->mutex); 1406 1407 /* Disable power save when reading GP2 */ 1408 ps_disabled = mvm->ps_disabled; 1409 if (!ps_disabled) { 1410 mvm->ps_disabled = true; 1411 iwl_mvm_power_update_device(mvm); 1412 } 1413 1414 *gp2 = iwl_mvm_get_systime(mvm); 1415 *boottime = ktime_get_boottime_ns(); 1416 1417 if (!ps_disabled) { 1418 mvm->ps_disabled = ps_disabled; 1419 iwl_mvm_power_update_device(mvm); 1420 } 1421 } 1422