kernel/drivers/net/wireless/iwlwifi/mvm/utils.c

   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  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
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  29  *  Intel Linux Wireless <ilw@linux.intel.com>
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  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <net/mac80211.h>
  66
  67 #include "iwl-debug.h"
  68 #include "iwl-io.h"
  69 #include "iwl-prph.h"
  70
  71 #include "mvm.h"
  72 #include "fw-api-rs.h"
  73
  74 /*
  75  * Will return 0 even if the cmd failed when RFKILL is asserted unless
  76  * CMD_WANT_SKB is set in cmd->flags.
  77  */
  78 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
  79 {
  80         int ret;
  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          * Synchronous commands from this op-mode must hold
  89          * the mutex, this ensures we don't try to send two
  90          * (or more) synchronous commands at a time.
  91          */
  92         if (!(cmd->flags & CMD_ASYNC))
  93                 lockdep_assert_held(&mvm->mutex);
  94
  95         ret = iwl_trans_send_cmd(mvm->trans, cmd);
  96
  97         /*
  98          * If the caller wants the SKB, then don't hide any problems, the
  99          * caller might access the response buffer which will be NULL if
 100          * the command failed.
 101          */
 102         if (cmd->flags & CMD_WANT_SKB)
 103                 return ret;
 104
 105         /* Silently ignore failures if RFKILL is asserted */
 106         if (!ret || ret == -ERFKILL)
 107                 return 0;
 108         return ret;
 109 }
 110
 111 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id,
 112                          u32 flags, u16 len, const void *data)
 113 {
 114         struct iwl_host_cmd cmd = {
 115                 .id = id,
 116                 .len = { len, },
 117                 .data = { data, },
 118                 .flags = flags,
 119         };
 120
 121         return iwl_mvm_send_cmd(mvm, &cmd);
 122 }
 123
 124 /*
 125  * We assume that the caller set the status to the success value
 126  */
 127 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
 128                             u32 *status)
 129 {
 130         struct iwl_rx_packet *pkt;
 131         struct iwl_cmd_response *resp;
 132         int ret, resp_len;
 133
 134         lockdep_assert_held(&mvm->mutex);
 135
 136 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
 137         if (WARN_ON(mvm->d3_test_active))
 138                 return -EIO;
 139 #endif
 140
 141         /*
 142          * Only synchronous commands can wait for status,
 143          * we use WANT_SKB so the caller can't.
 144          */
 145         if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
 146                       "cmd flags %x", cmd->flags))
 147                 return -EINVAL;
 148
 149         cmd->flags |= CMD_WANT_SKB;
 150
 151         ret = iwl_trans_send_cmd(mvm->trans, cmd);
 152         if (ret == -ERFKILL) {
 153                 /*
 154                  * The command failed because of RFKILL, don't update
 155                  * the status, leave it as success and return 0.
 156                  */
 157                 return 0;
 158         } else if (ret) {
 159                 return ret;
 160         }
 161
 162         pkt = cmd->resp_pkt;
 163         /* Can happen if RFKILL is asserted */
 164         if (!pkt) {
 165                 ret = 0;
 166                 goto out_free_resp;
 167         }
 168
 169         if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
 170                 ret = -EIO;
 171                 goto out_free_resp;
 172         }
 173
 174         resp_len = iwl_rx_packet_payload_len(pkt);
 175         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
 176                 ret = -EIO;
 177                 goto out_free_resp;
 178         }
 179
 180         resp = (void *)pkt->data;
 181         *status = le32_to_cpu(resp->status);
 182  out_free_resp:
 183         iwl_free_resp(cmd);
 184         return ret;
 185 }
 186
 187 /*
 188  * We assume that the caller set the status to the sucess value
 189  */
 190 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u8 id, u16 len,
 191                                 const void *data, u32 *status)
 192 {
 193         struct iwl_host_cmd cmd = {
 194                 .id = id,
 195                 .len = { len, },
 196                 .data = { data, },
 197         };
 198
 199         return iwl_mvm_send_cmd_status(mvm, &cmd, status);
 200 }
 201
 202 #define IWL_DECLARE_RATE_INFO(r) \
 203         [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
 204
 205 /*
 206  * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
 207  */
 208 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
 209         IWL_DECLARE_RATE_INFO(1),
 210         IWL_DECLARE_RATE_INFO(2),
 211         IWL_DECLARE_RATE_INFO(5),
 212         IWL_DECLARE_RATE_INFO(11),
 213         IWL_DECLARE_RATE_INFO(6),
 214         IWL_DECLARE_RATE_INFO(9),
 215         IWL_DECLARE_RATE_INFO(12),
 216         IWL_DECLARE_RATE_INFO(18),
 217         IWL_DECLARE_RATE_INFO(24),
 218         IWL_DECLARE_RATE_INFO(36),
 219         IWL_DECLARE_RATE_INFO(48),
 220         IWL_DECLARE_RATE_INFO(54),
 221 };
 222
 223 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
 224                                         enum ieee80211_band band)
 225 {
 226         int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
 227         int idx;
 228         int band_offset = 0;
 229
 230         /* Legacy rate format, search for match in table */
 231         if (band == IEEE80211_BAND_5GHZ)
 232                 band_offset = IWL_FIRST_OFDM_RATE;
 233         for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
 234                 if (fw_rate_idx_to_plcp[idx] == rate)
 235                         return idx - band_offset;
 236
 237         return -1;
 238 }
 239
 240 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
 241 {
 242         /* Get PLCP rate for tx_cmd->rate_n_flags */
 243         return fw_rate_idx_to_plcp[rate_idx];
 244 }
 245
 246 int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 247                           struct iwl_device_cmd *cmd)
 248 {
 249         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 250         struct iwl_error_resp *err_resp = (void *)pkt->data;
 251
 252         IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
 253                 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
 254         IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
 255                 le16_to_cpu(err_resp->bad_cmd_seq_num),
 256                 le32_to_cpu(err_resp->error_service));
 257         IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
 258                 le64_to_cpu(err_resp->timestamp));
 259         return 0;
 260 }
 261
 262 /*
 263  * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
 264  * The parameter should also be a combination of ANT_[ABC].
 265  */
 266 u8 first_antenna(u8 mask)
 267 {
 268         BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
 269         if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
 270                 return BIT(0);
 271         return BIT(ffs(mask) - 1);
 272 }
 273
 274 /*
 275  * Toggles between TX antennas to send the probe request on.
 276  * Receives the bitmask of valid TX antennas and the *index* used
 277  * for the last TX, and returns the next valid *index* to use.
 278  * In order to set it in the tx_cmd, must do BIT(idx).
 279  */
 280 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
 281 {
 282         u8 ind = last_idx;
 283         int i;
 284
 285         for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
 286                 ind = (ind + 1) % RATE_MCS_ANT_NUM;
 287                 if (valid & BIT(ind))
 288                         return ind;
 289         }
 290
 291         WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
 292         return last_idx;
 293 }
 294
 295 static const struct {
 296         const char *name;
 297         u8 num;
 298 } advanced_lookup[] = {
 299         { "NMI_INTERRUPT_WDG", 0x34 },
 300         { "SYSASSERT", 0x35 },
 301         { "UCODE_VERSION_MISMATCH", 0x37 },
 302         { "BAD_COMMAND", 0x38 },
 303         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
 304         { "FATAL_ERROR", 0x3D },
 305         { "NMI_TRM_HW_ERR", 0x46 },
 306         { "NMI_INTERRUPT_TRM", 0x4C },
 307         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
 308         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
 309         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
 310         { "NMI_INTERRUPT_HOST", 0x66 },
 311         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
 312         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
 313         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
 314         { "ADVANCED_SYSASSERT", 0 },
 315 };
 316
 317 static const char *desc_lookup(u32 num)
 318 {
 319         int i;
 320
 321         for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
 322                 if (advanced_lookup[i].num == num)
 323                         return advanced_lookup[i].name;
 324
 325         /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
 326         return advanced_lookup[i].name;
 327 }
 328
 329 /*
 330  * Note: This structure is read from the device with IO accesses,
 331  * and the reading already does the endian conversion. As it is
 332  * read with u32-sized accesses, any members with a different size
 333  * need to be ordered correctly though!
 334  */
 335 struct iwl_error_event_table_v1 {
 336         u32 valid;              /* (nonzero) valid, (0) log is empty */
 337         u32 error_id;           /* type of error */
 338         u32 pc;                 /* program counter */
 339         u32 blink1;             /* branch link */
 340         u32 blink2;             /* branch link */
 341         u32 ilink1;             /* interrupt link */
 342         u32 ilink2;             /* interrupt link */
 343         u32 data1;              /* error-specific data */
 344         u32 data2;              /* error-specific data */
 345         u32 data3;              /* error-specific data */
 346         u32 bcon_time;          /* beacon timer */
 347         u32 tsf_low;            /* network timestamp function timer */
 348         u32 tsf_hi;             /* network timestamp function timer */
 349         u32 gp1;                /* GP1 timer register */
 350         u32 gp2;                /* GP2 timer register */
 351         u32 gp3;                /* GP3 timer register */
 352         u32 ucode_ver;          /* uCode version */
 353         u32 hw_ver;             /* HW Silicon version */
 354         u32 brd_ver;            /* HW board version */
 355         u32 log_pc;             /* log program counter */
 356         u32 frame_ptr;          /* frame pointer */
 357         u32 stack_ptr;          /* stack pointer */
 358         u32 hcmd;               /* last host command header */
 359         u32 isr0;               /* isr status register LMPM_NIC_ISR0:
 360                                  * rxtx_flag */
 361         u32 isr1;               /* isr status register LMPM_NIC_ISR1:
 362                                  * host_flag */
 363         u32 isr2;               /* isr status register LMPM_NIC_ISR2:
 364                                  * enc_flag */
 365         u32 isr3;               /* isr status register LMPM_NIC_ISR3:
 366                                  * time_flag */
 367         u32 isr4;               /* isr status register LMPM_NIC_ISR4:
 368                                  * wico interrupt */
 369         u32 isr_pref;           /* isr status register LMPM_NIC_PREF_STAT */
 370         u32 wait_event;         /* wait event() caller address */
 371         u32 l2p_control;        /* L2pControlField */
 372         u32 l2p_duration;       /* L2pDurationField */
 373         u32 l2p_mhvalid;        /* L2pMhValidBits */
 374         u32 l2p_addr_match;     /* L2pAddrMatchStat */
 375         u32 lmpm_pmg_sel;       /* indicate which clocks are turned on
 376                                  * (LMPM_PMG_SEL) */
 377         u32 u_timestamp;        /* indicate when the date and time of the
 378                                  * compilation */
 379         u32 flow_handler;       /* FH read/write pointers, RX credit */
 380 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
 381
 382 struct iwl_error_event_table {
 383         u32 valid;              /* (nonzero) valid, (0) log is empty */
 384         u32 error_id;           /* type of error */
 385         u32 pc;                 /* program counter */
 386         u32 blink1;             /* branch link */
 387         u32 blink2;             /* branch link */
 388         u32 ilink1;             /* interrupt link */
 389         u32 ilink2;             /* interrupt link */
 390         u32 data1;              /* error-specific data */
 391         u32 data2;              /* error-specific data */
 392         u32 data3;              /* error-specific data */
 393         u32 bcon_time;          /* beacon timer */
 394         u32 tsf_low;            /* network timestamp function timer */
 395         u32 tsf_hi;             /* network timestamp function timer */
 396         u32 gp1;                /* GP1 timer register */
 397         u32 gp2;                /* GP2 timer register */
 398         u32 gp3;                /* GP3 timer register */
 399         u32 major;              /* uCode version major */
 400         u32 minor;              /* uCode version minor */
 401         u32 hw_ver;             /* HW Silicon version */
 402         u32 brd_ver;            /* HW board version */
 403         u32 log_pc;             /* log program counter */
 404         u32 frame_ptr;          /* frame pointer */
 405         u32 stack_ptr;          /* stack pointer */
 406         u32 hcmd;               /* last host command header */
 407         u32 isr0;               /* isr status register LMPM_NIC_ISR0:
 408                                  * rxtx_flag */
 409         u32 isr1;               /* isr status register LMPM_NIC_ISR1:
 410                                  * host_flag */
 411         u32 isr2;               /* isr status register LMPM_NIC_ISR2:
 412                                  * enc_flag */
 413         u32 isr3;               /* isr status register LMPM_NIC_ISR3:
 414                                  * time_flag */
 415         u32 isr4;               /* isr status register LMPM_NIC_ISR4:
 416                                  * wico interrupt */
 417         u32 isr_pref;           /* isr status register LMPM_NIC_PREF_STAT */
 418         u32 wait_event;         /* wait event() caller address */
 419         u32 l2p_control;        /* L2pControlField */
 420         u32 l2p_duration;       /* L2pDurationField */
 421         u32 l2p_mhvalid;        /* L2pMhValidBits */
 422         u32 l2p_addr_match;     /* L2pAddrMatchStat */
 423         u32 lmpm_pmg_sel;       /* indicate which clocks are turned on
 424                                  * (LMPM_PMG_SEL) */
 425         u32 u_timestamp;        /* indicate when the date and time of the
 426                                  * compilation */
 427         u32 flow_handler;       /* FH read/write pointers, RX credit */
 428 } __packed /* LOG_ERROR_TABLE_API_S_VER_2 */;
 429
 430 /*
 431  * UMAC error struct - relevant starting from family 8000 chip.
 432  * Note: This structure is read from the device with IO accesses,
 433  * and the reading already does the endian conversion. As it is
 434  * read with u32-sized accesses, any members with a different size
 435  * need to be ordered correctly though!
 436  */
 437 struct iwl_umac_error_event_table {
 438         u32 valid;              /* (nonzero) valid, (0) log is empty */
 439         u32 error_id;           /* type of error */
 440         u32 blink1;             /* branch link */
 441         u32 blink2;             /* branch link */
 442         u32 ilink1;             /* interrupt link */
 443         u32 ilink2;             /* interrupt link */
 444         u32 data1;              /* error-specific data */
 445         u32 data2;              /* error-specific data */
 446         u32 data3;              /* error-specific data */
 447         u32 umac_major;
 448         u32 umac_minor;
 449         u32 frame_pointer;      /* core register 27*/
 450         u32 stack_pointer;      /* core register 28 */
 451         u32 cmd_header;         /* latest host cmd sent to UMAC */
 452         u32 nic_isr_pref;       /* ISR status register */
 453 } __packed;
 454
 455 #define ERROR_START_OFFSET  (1 * sizeof(u32))
 456 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
 457
 458 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
 459 {
 460         struct iwl_trans *trans = mvm->trans;
 461         struct iwl_umac_error_event_table table;
 462         u32 base;
 463
 464         base = mvm->umac_error_event_table;
 465
 466         if (base < 0x800000) {
 467                 IWL_ERR(mvm,
 468                         "Not valid error log pointer 0x%08X for %s uCode\n",
 469                         base,
 470                         (mvm->cur_ucode == IWL_UCODE_INIT)
 471                                         ? "Init" : "RT");
 472                 return;
 473         }
 474
 475         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 476
 477         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 478                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 479                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 480                         mvm->status, table.valid);
 481         }
 482
 483         IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
 484                 desc_lookup(table.error_id));
 485         IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
 486         IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
 487         IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
 488         IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
 489         IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
 490         IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
 491         IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
 492         IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
 493         IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
 494         IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
 495         IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
 496         IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
 497         IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
 498 }
 499
 500 static void iwl_mvm_dump_nic_error_log_old(struct iwl_mvm *mvm)
 501 {
 502         struct iwl_trans *trans = mvm->trans;
 503         struct iwl_error_event_table_v1 table;
 504         u32 base;
 505
 506         base = mvm->error_event_table;
 507         if (mvm->cur_ucode == IWL_UCODE_INIT) {
 508                 if (!base)
 509                         base = mvm->fw->init_errlog_ptr;
 510         } else {
 511                 if (!base)
 512                         base = mvm->fw->inst_errlog_ptr;
 513         }
 514
 515         if (base < 0x800000) {
 516                 IWL_ERR(mvm,
 517                         "Not valid error log pointer 0x%08X for %s uCode\n",
 518                         base,
 519                         (mvm->cur_ucode == IWL_UCODE_INIT)
 520                                         ? "Init" : "RT");
 521                 return;
 522         }
 523
 524         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 525
 526         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 527                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 528                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 529                         mvm->status, table.valid);
 530         }
 531
 532         /* Do not change this output - scripts rely on it */
 533
 534         IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 535
 536         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
 537                                       table.data1, table.data2, table.data3,
 538                                       table.blink1, table.blink2, table.ilink1,
 539                                       table.ilink2, table.bcon_time, table.gp1,
 540                                       table.gp2, table.gp3, table.ucode_ver, 0,
 541                                       table.hw_ver, table.brd_ver);
 542         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 543                 desc_lookup(table.error_id));
 544         IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
 545         IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
 546         IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
 547         IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
 548         IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
 549         IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
 550         IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
 551         IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
 552         IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
 553         IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
 554         IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
 555         IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
 556         IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
 557         IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
 558         IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver);
 559         IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
 560         IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
 561         IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
 562         IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
 563         IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
 564         IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
 565         IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
 566         IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
 567         IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
 568         IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
 569         IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
 570         IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
 571         IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
 572         IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
 573         IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
 574         IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
 575         IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
 576
 577         if (mvm->support_umac_log)
 578                 iwl_mvm_dump_umac_error_log(mvm);
 579 }
 580
 581 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
 582 {
 583         struct iwl_trans *trans = mvm->trans;
 584         struct iwl_error_event_table table;
 585         u32 base;
 586
 587         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_NEW_VERSION)) {
 588                 iwl_mvm_dump_nic_error_log_old(mvm);
 589                 return;
 590         }
 591
 592         base = mvm->error_event_table;
 593         if (mvm->cur_ucode == IWL_UCODE_INIT) {
 594                 if (!base)
 595                         base = mvm->fw->init_errlog_ptr;
 596         } else {
 597                 if (!base)
 598                         base = mvm->fw->inst_errlog_ptr;
 599         }
 600
 601         if (base < 0x800000) {
 602                 IWL_ERR(mvm,
 603                         "Not valid error log pointer 0x%08X for %s uCode\n",
 604                         base,
 605                         (mvm->cur_ucode == IWL_UCODE_INIT)
 606                                         ? "Init" : "RT");
 607                 return;
 608         }
 609
 610         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 611
 612         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 613                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 614                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 615                         mvm->status, table.valid);
 616         }
 617
 618         /* Do not change this output - scripts rely on it */
 619
 620         IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 621
 622         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
 623                                       table.data1, table.data2, table.data3,
 624                                       table.blink1, table.blink2, table.ilink1,
 625                                       table.ilink2, table.bcon_time, table.gp1,
 626                                       table.gp2, table.gp3, table.major,
 627                                       table.minor, table.hw_ver, table.brd_ver);
 628         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 629                 desc_lookup(table.error_id));
 630         IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
 631         IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
 632         IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
 633         IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
 634         IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
 635         IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
 636         IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
 637         IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
 638         IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
 639         IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
 640         IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
 641         IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
 642         IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
 643         IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
 644         IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
 645         IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
 646         IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
 647         IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
 648         IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
 649         IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
 650         IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
 651         IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
 652         IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
 653         IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
 654         IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
 655         IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
 656         IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
 657         IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
 658         IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
 659         IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
 660         IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
 661         IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
 662         IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
 663
 664         if (mvm->support_umac_log)
 665                 iwl_mvm_dump_umac_error_log(mvm);
 666 }
 667 void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, u16 ssn,
 668                         const struct iwl_trans_txq_scd_cfg *cfg,
 669                         unsigned int wdg_timeout)
 670 {
 671         struct iwl_scd_txq_cfg_cmd cmd = {
 672                 .scd_queue = queue,
 673                 .enable = 1,
 674                 .window = cfg->frame_limit,
 675                 .sta_id = cfg->sta_id,
 676                 .ssn = cpu_to_le16(ssn),
 677                 .tx_fifo = cfg->fifo,
 678                 .aggregate = cfg->aggregate,
 679                 .tid = cfg->tid,
 680         };
 681
 682         if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
 683                 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, cfg,
 684                                          wdg_timeout);
 685                 return;
 686         }
 687
 688         iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
 689         WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
 690              "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
 691 }
 692
 693 void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, u8 flags)
 694 {
 695         struct iwl_scd_txq_cfg_cmd cmd = {
 696                 .scd_queue = queue,
 697                 .enable = 0,
 698         };
 699         int ret;
 700
 701         if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
 702                 iwl_trans_txq_disable(mvm->trans, queue, true);
 703                 return;
 704         }
 705
 706         iwl_trans_txq_disable(mvm->trans, queue, false);
 707         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
 708                                    sizeof(cmd), &cmd);
 709         if (ret)
 710                 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
 711                         queue, ret);
 712 }
 713
 714 /**
 715  * iwl_mvm_send_lq_cmd() - Send link quality command
 716  * @init: This command is sent as part of station initialization right
 717  *        after station has been added.
 718  *
 719  * The link quality command is sent as the last step of station creation.
 720  * This is the special case in which init is set and we call a callback in
 721  * this case to clear the state indicating that station creation is in
 722  * progress.
 723  */
 724 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
 725 {
 726         struct iwl_host_cmd cmd = {
 727                 .id = LQ_CMD,
 728                 .len = { sizeof(struct iwl_lq_cmd), },
 729                 .flags = init ? 0 : CMD_ASYNC,
 730                 .data = { lq, },
 731         };
 732
 733         if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
 734                 return -EINVAL;
 735
 736         return iwl_mvm_send_cmd(mvm, &cmd);
 737 }
 738
 739 /**
 740  * iwl_mvm_update_smps - Get a request to change the SMPS mode
 741  * @req_type: The part of the driver who call for a change.
 742  * @smps_requests: The request to change the SMPS mode.
 743  *
 744  * Get a requst to change the SMPS mode,
 745  * and change it according to all other requests in the driver.
 746  */
 747 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 748                          enum iwl_mvm_smps_type_request req_type,
 749                          enum ieee80211_smps_mode smps_request)
 750 {
 751         struct iwl_mvm_vif *mvmvif;
 752         enum ieee80211_smps_mode smps_mode;
 753         int i;
 754
 755         lockdep_assert_held(&mvm->mutex);
 756
 757         /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
 758         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
 759                 return;
 760
 761         if (vif->type == NL80211_IFTYPE_AP)
 762                 smps_mode = IEEE80211_SMPS_OFF;
 763         else
 764                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 765
 766         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 767         mvmvif->smps_requests[req_type] = smps_request;
 768         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 769                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
 770                         smps_mode = IEEE80211_SMPS_STATIC;
 771                         break;
 772                 }
 773                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 774                         smps_mode = IEEE80211_SMPS_DYNAMIC;
 775         }
 776
 777         ieee80211_request_smps(vif, smps_mode);
 778 }
 779
 780 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
 781 {
 782         struct iwl_statistics_cmd scmd = {
 783                 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
 784         };
 785         struct iwl_host_cmd cmd = {
 786                 .id = STATISTICS_CMD,
 787                 .len[0] = sizeof(scmd),
 788                 .data[0] = &scmd,
 789                 .flags = CMD_WANT_SKB,
 790         };
 791         int ret;
 792
 793         ret = iwl_mvm_send_cmd(mvm, &cmd);
 794         if (ret)
 795                 return ret;
 796
 797         iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
 798         iwl_free_resp(&cmd);
 799
 800         if (clear)
 801                 iwl_mvm_accu_radio_stats(mvm);
 802
 803         return 0;
 804 }
 805
 806 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
 807 {
 808         mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
 809         mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
 810         mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
 811         mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
 812 }
 813
 814 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
 815                                    struct ieee80211_vif *vif)
 816 {
 817         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 818         bool *result = _data;
 819         int i;
 820
 821         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 822                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
 823                     mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 824                         *result = false;
 825         }
 826 }
 827
 828 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
 829 {
 830         bool result = true;
 831
 832         lockdep_assert_held(&mvm->mutex);
 833
 834         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
 835                 return false;
 836
 837         if (mvm->cfg->rx_with_siso_diversity)
 838                 return false;
 839
 840         ieee80211_iterate_active_interfaces_atomic(
 841                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 842                         iwl_mvm_diversity_iter, &result);
 843
 844         return result;
 845 }
 846
 847 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 848                                bool value)
 849 {
 850         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 851         int res;
 852
 853         lockdep_assert_held(&mvm->mutex);
 854
 855         if (mvmvif->low_latency == value)
 856                 return 0;
 857
 858         mvmvif->low_latency = value;
 859
 860         res = iwl_mvm_update_quotas(mvm, false, NULL);
 861         if (res)
 862                 return res;
 863
 864         iwl_mvm_bt_coex_vif_change(mvm);
 865
 866         return iwl_mvm_power_update_mac(mvm);
 867 }
 868
 869 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
 870 {
 871         bool *result = _data;
 872
 873         if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
 874                 *result = true;
 875 }
 876
 877 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
 878 {
 879         bool result = false;
 880
 881         ieee80211_iterate_active_interfaces_atomic(
 882                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 883                         iwl_mvm_ll_iter, &result);
 884
 885         return result;
 886 }
 887
 888 struct iwl_bss_iter_data {
 889         struct ieee80211_vif *vif;
 890         bool error;
 891 };
 892
 893 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
 894                                        struct ieee80211_vif *vif)
 895 {
 896         struct iwl_bss_iter_data *data = _data;
 897
 898         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
 899                 return;
 900
 901         if (data->vif) {
 902                 data->error = true;
 903                 return;
 904         }
 905
 906         data->vif = vif;
 907 }
 908
 909 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
 910 {
 911         struct iwl_bss_iter_data bss_iter_data = {};
 912
 913         ieee80211_iterate_active_interfaces_atomic(
 914                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 915                 iwl_mvm_bss_iface_iterator, &bss_iter_data);
 916
 917         if (bss_iter_data.error) {
 918                 IWL_ERR(mvm, "More than one managed interface active!\n");
 919                 return ERR_PTR(-EINVAL);
 920         }
 921
 922         return bss_iter_data.vif;
 923 }
 924
 925 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
 926                                     struct ieee80211_vif *vif,
 927                                     bool tdls, bool cmd_q)
 928 {
 929         struct iwl_fw_dbg_trigger_tlv *trigger;
 930         struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
 931         unsigned int default_timeout =
 932                 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
 933
 934         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS))
 935                 return iwlmvm_mod_params.tfd_q_hang_detect ?
 936                         default_timeout : IWL_WATCHDOG_DISABLED;
 937
 938         trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
 939         txq_timer = (void *)trigger->data;
 940
 941         if (tdls)
 942                 return le32_to_cpu(txq_timer->tdls);
 943
 944         if (cmd_q)
 945                 return le32_to_cpu(txq_timer->command_queue);
 946
 947         if (WARN_ON(!vif))
 948                 return default_timeout;
 949
 950         switch (ieee80211_vif_type_p2p(vif)) {
 951         case NL80211_IFTYPE_ADHOC:
 952                 return le32_to_cpu(txq_timer->ibss);
 953         case NL80211_IFTYPE_STATION:
 954                 return le32_to_cpu(txq_timer->bss);
 955         case NL80211_IFTYPE_AP:
 956                 return le32_to_cpu(txq_timer->softap);
 957         case NL80211_IFTYPE_P2P_CLIENT:
 958                 return le32_to_cpu(txq_timer->p2p_client);
 959         case NL80211_IFTYPE_P2P_GO:
 960                 return le32_to_cpu(txq_timer->p2p_go);
 961         case NL80211_IFTYPE_P2P_DEVICE:
 962                 return le32_to_cpu(txq_timer->p2p_device);
 963         default:
 964                 WARN_ON(1);
 965                 return mvm->cfg->base_params->wd_timeout;
 966         }
 967 }
 968
 969 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 970                              const char *errmsg)
 971 {
 972         struct iwl_fw_dbg_trigger_tlv *trig;
 973         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
 974
 975         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
 976                 goto out;
 977
 978         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
 979         trig_mlme = (void *)trig->data;
 980         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 981                 goto out;
 982
 983         if (trig_mlme->stop_connection_loss &&
 984             --trig_mlme->stop_connection_loss)
 985                 goto out;
 986
 987         iwl_mvm_fw_dbg_collect_trig(mvm, trig, "%s", errmsg);
 988
 989 out:
 990         ieee80211_connection_loss(vif);
 991 }