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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  21  * along with this program; if not, write to the Free Software
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  28  * Contact Information:
  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  39  * modification, are permitted provided that the following conditions
  40  * are met:
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  43  *    notice, this list of conditions and the following disclaimer.
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  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
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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,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  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, u32 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         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 ieee80211_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 == IEEE80211_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 < RATE_MCS_ANT_NUM; i++) {
 279                 ind = (ind + 1) % RATE_MCS_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 pc;                 /* program counter */
 379         u32 blink1;             /* branch link */
 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 gp3;                /* GP3 timer register */
 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 isr_pref;           /* isr status register LMPM_NIC_PREF_STAT */
 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_2 */;
 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         u32 base;
 456
 457         base = mvm->umac_error_event_table;
 458
 459         if (base < 0x800000) {
 460                 IWL_ERR(mvm,
 461                         "Not valid error log pointer 0x%08X for %s uCode\n",
 462                         base,
 463                         (mvm->cur_ucode == IWL_UCODE_INIT)
 464                                         ? "Init" : "RT");
 465                 return;
 466         }
 467
 468         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 469
 470         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 471                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 472                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 473                         mvm->status, table.valid);
 474         }
 475
 476         IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
 477                 desc_lookup(table.error_id));
 478         IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
 479         IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
 480         IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
 481         IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
 482         IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
 483         IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
 484         IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
 485         IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
 486         IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
 487         IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
 488         IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
 489         IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
 490         IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
 491 }
 492
 493 static void iwl_mvm_dump_nic_error_log_old(struct iwl_mvm *mvm)
 494 {
 495         struct iwl_trans *trans = mvm->trans;
 496         struct iwl_error_event_table_v1 table;
 497         u32 base;
 498
 499         base = mvm->error_event_table;
 500         if (mvm->cur_ucode == IWL_UCODE_INIT) {
 501                 if (!base)
 502                         base = mvm->fw->init_errlog_ptr;
 503         } else {
 504                 if (!base)
 505                         base = mvm->fw->inst_errlog_ptr;
 506         }
 507
 508         if (base < 0x800000) {
 509                 IWL_ERR(mvm,
 510                         "Not valid error log pointer 0x%08X for %s uCode\n",
 511                         base,
 512                         (mvm->cur_ucode == IWL_UCODE_INIT)
 513                                         ? "Init" : "RT");
 514                 return;
 515         }
 516
 517         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 518
 519         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 520                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 521                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 522                         mvm->status, table.valid);
 523         }
 524
 525         /* Do not change this output - scripts rely on it */
 526
 527         IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 528
 529         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
 530                                       table.data1, table.data2, table.data3,
 531                                       table.blink1, table.blink2, table.ilink1,
 532                                       table.ilink2, table.bcon_time, table.gp1,
 533                                       table.gp2, table.gp3, table.ucode_ver, 0,
 534                                       table.hw_ver, table.brd_ver);
 535         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 536                 desc_lookup(table.error_id));
 537         IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
 538         IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
 539         IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
 540         IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
 541         IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
 542         IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
 543         IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
 544         IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
 545         IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
 546         IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
 547         IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
 548         IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
 549         IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
 550         IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
 551         IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver);
 552         IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
 553         IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
 554         IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
 555         IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
 556         IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
 557         IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
 558         IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
 559         IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
 560         IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
 561         IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
 562         IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
 563         IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
 564         IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
 565         IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
 566         IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
 567         IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
 568         IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
 569
 570         if (mvm->support_umac_log)
 571                 iwl_mvm_dump_umac_error_log(mvm);
 572 }
 573
 574 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
 575 {
 576         struct iwl_trans *trans = mvm->trans;
 577         struct iwl_error_event_table table;
 578         u32 base;
 579
 580         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_NEW_VERSION)) {
 581                 iwl_mvm_dump_nic_error_log_old(mvm);
 582                 return;
 583         }
 584
 585         base = mvm->error_event_table;
 586         if (mvm->cur_ucode == IWL_UCODE_INIT) {
 587                 if (!base)
 588                         base = mvm->fw->init_errlog_ptr;
 589         } else {
 590                 if (!base)
 591                         base = mvm->fw->inst_errlog_ptr;
 592         }
 593
 594         if (base < 0x800000) {
 595                 IWL_ERR(mvm,
 596                         "Not valid error log pointer 0x%08X for %s uCode\n",
 597                         base,
 598                         (mvm->cur_ucode == IWL_UCODE_INIT)
 599                                         ? "Init" : "RT");
 600                 return;
 601         }
 602
 603         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
 604
 605         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
 606                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
 607                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
 608                         mvm->status, table.valid);
 609         }
 610
 611         /* Do not change this output - scripts rely on it */
 612
 613         IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
 614
 615         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
 616                                       table.data1, table.data2, table.data3,
 617                                       table.blink1, table.blink2, table.ilink1,
 618                                       table.ilink2, table.bcon_time, table.gp1,
 619                                       table.gp2, table.gp3, table.major,
 620                                       table.minor, table.hw_ver, table.brd_ver);
 621         IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
 622                 desc_lookup(table.error_id));
 623         IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
 624         IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
 625         IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
 626         IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
 627         IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
 628         IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
 629         IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
 630         IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
 631         IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
 632         IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
 633         IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
 634         IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
 635         IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
 636         IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
 637         IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
 638         IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
 639         IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
 640         IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
 641         IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
 642         IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
 643         IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
 644         IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
 645         IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
 646         IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
 647         IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
 648         IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
 649         IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
 650         IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
 651         IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
 652         IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
 653         IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
 654         IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
 655         IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
 656
 657         if (mvm->support_umac_log)
 658                 iwl_mvm_dump_umac_error_log(mvm);
 659 }
 660 void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, u16 ssn,
 661                         const struct iwl_trans_txq_scd_cfg *cfg,
 662                         unsigned int wdg_timeout)
 663 {
 664         struct iwl_scd_txq_cfg_cmd cmd = {
 665                 .scd_queue = queue,
 666                 .enable = 1,
 667                 .window = cfg->frame_limit,
 668                 .sta_id = cfg->sta_id,
 669                 .ssn = cpu_to_le16(ssn),
 670                 .tx_fifo = cfg->fifo,
 671                 .aggregate = cfg->aggregate,
 672                 .tid = cfg->tid,
 673         };
 674
 675         if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
 676                 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, cfg,
 677                                          wdg_timeout);
 678                 return;
 679         }
 680
 681         iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
 682         WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
 683              "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
 684 }
 685
 686 void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, u8 flags)
 687 {
 688         struct iwl_scd_txq_cfg_cmd cmd = {
 689                 .scd_queue = queue,
 690                 .enable = 0,
 691         };
 692         int ret;
 693
 694         if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
 695                 iwl_trans_txq_disable(mvm->trans, queue, true);
 696                 return;
 697         }
 698
 699         iwl_trans_txq_disable(mvm->trans, queue, false);
 700         ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
 701                                    sizeof(cmd), &cmd);
 702         if (ret)
 703                 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
 704                         queue, ret);
 705 }
 706
 707 /**
 708  * iwl_mvm_send_lq_cmd() - Send link quality command
 709  * @init: This command is sent as part of station initialization right
 710  *        after station has been added.
 711  *
 712  * The link quality command is sent as the last step of station creation.
 713  * This is the special case in which init is set and we call a callback in
 714  * this case to clear the state indicating that station creation is in
 715  * progress.
 716  */
 717 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
 718 {
 719         struct iwl_host_cmd cmd = {
 720                 .id = LQ_CMD,
 721                 .len = { sizeof(struct iwl_lq_cmd), },
 722                 .flags = init ? 0 : CMD_ASYNC,
 723                 .data = { lq, },
 724         };
 725
 726         if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
 727                 return -EINVAL;
 728
 729         return iwl_mvm_send_cmd(mvm, &cmd);
 730 }
 731
 732 /**
 733  * iwl_mvm_update_smps - Get a request to change the SMPS mode
 734  * @req_type: The part of the driver who call for a change.
 735  * @smps_requests: The request to change the SMPS mode.
 736  *
 737  * Get a requst to change the SMPS mode,
 738  * and change it according to all other requests in the driver.
 739  */
 740 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 741                          enum iwl_mvm_smps_type_request req_type,
 742                          enum ieee80211_smps_mode smps_request)
 743 {
 744         struct iwl_mvm_vif *mvmvif;
 745         enum ieee80211_smps_mode smps_mode;
 746         int i;
 747
 748         lockdep_assert_held(&mvm->mutex);
 749
 750         /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
 751         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
 752                 return;
 753
 754         if (vif->type == NL80211_IFTYPE_AP)
 755                 smps_mode = IEEE80211_SMPS_OFF;
 756         else
 757                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 758
 759         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 760         mvmvif->smps_requests[req_type] = smps_request;
 761         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 762                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
 763                         smps_mode = IEEE80211_SMPS_STATIC;
 764                         break;
 765                 }
 766                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 767                         smps_mode = IEEE80211_SMPS_DYNAMIC;
 768         }
 769
 770         ieee80211_request_smps(vif, smps_mode);
 771 }
 772
 773 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
 774 {
 775         struct iwl_statistics_cmd scmd = {
 776                 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
 777         };
 778         struct iwl_host_cmd cmd = {
 779                 .id = STATISTICS_CMD,
 780                 .len[0] = sizeof(scmd),
 781                 .data[0] = &scmd,
 782                 .flags = CMD_WANT_SKB,
 783         };
 784         int ret;
 785
 786         ret = iwl_mvm_send_cmd(mvm, &cmd);
 787         if (ret)
 788                 return ret;
 789
 790         iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
 791         iwl_free_resp(&cmd);
 792
 793         if (clear)
 794                 iwl_mvm_accu_radio_stats(mvm);
 795
 796         return 0;
 797 }
 798
 799 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
 800 {
 801         mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
 802         mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
 803         mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
 804         mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
 805 }
 806
 807 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
 808                                    struct ieee80211_vif *vif)
 809 {
 810         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 811         bool *result = _data;
 812         int i;
 813
 814         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
 815                 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
 816                     mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
 817                         *result = false;
 818         }
 819 }
 820
 821 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
 822 {
 823         bool result = true;
 824
 825         lockdep_assert_held(&mvm->mutex);
 826
 827         if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
 828                 return false;
 829
 830         if (mvm->cfg->rx_with_siso_diversity)
 831                 return false;
 832
 833         ieee80211_iterate_active_interfaces_atomic(
 834                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 835                         iwl_mvm_diversity_iter, &result);
 836
 837         return result;
 838 }
 839
 840 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 841                                bool value)
 842 {
 843         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 844         int res;
 845
 846         lockdep_assert_held(&mvm->mutex);
 847
 848         if (mvmvif->low_latency == value)
 849                 return 0;
 850
 851         mvmvif->low_latency = value;
 852
 853         res = iwl_mvm_update_quotas(mvm, false, NULL);
 854         if (res)
 855                 return res;
 856
 857         iwl_mvm_bt_coex_vif_change(mvm);
 858
 859         return iwl_mvm_power_update_mac(mvm);
 860 }
 861
 862 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
 863 {
 864         bool *result = _data;
 865
 866         if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
 867                 *result = true;
 868 }
 869
 870 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
 871 {
 872         bool result = false;
 873
 874         ieee80211_iterate_active_interfaces_atomic(
 875                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 876                         iwl_mvm_ll_iter, &result);
 877
 878         return result;
 879 }
 880
 881 struct iwl_bss_iter_data {
 882         struct ieee80211_vif *vif;
 883         bool error;
 884 };
 885
 886 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
 887                                        struct ieee80211_vif *vif)
 888 {
 889         struct iwl_bss_iter_data *data = _data;
 890
 891         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
 892                 return;
 893
 894         if (data->vif) {
 895                 data->error = true;
 896                 return;
 897         }
 898
 899         data->vif = vif;
 900 }
 901
 902 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
 903 {
 904         struct iwl_bss_iter_data bss_iter_data = {};
 905
 906         ieee80211_iterate_active_interfaces_atomic(
 907                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 908                 iwl_mvm_bss_iface_iterator, &bss_iter_data);
 909
 910         if (bss_iter_data.error) {
 911                 IWL_ERR(mvm, "More than one managed interface active!\n");
 912                 return ERR_PTR(-EINVAL);
 913         }
 914
 915         return bss_iter_data.vif;
 916 }
 917
 918 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
 919                                     struct ieee80211_vif *vif,
 920                                     bool tdls, bool cmd_q)
 921 {
 922         struct iwl_fw_dbg_trigger_tlv *trigger;
 923         struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
 924         unsigned int default_timeout =
 925                 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
 926
 927         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS))
 928                 return iwlmvm_mod_params.tfd_q_hang_detect ?
 929                         default_timeout : IWL_WATCHDOG_DISABLED;
 930
 931         trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
 932         txq_timer = (void *)trigger->data;
 933
 934         if (tdls)
 935                 return le32_to_cpu(txq_timer->tdls);
 936
 937         if (cmd_q)
 938                 return le32_to_cpu(txq_timer->command_queue);
 939
 940         if (WARN_ON(!vif))
 941                 return default_timeout;
 942
 943         switch (ieee80211_vif_type_p2p(vif)) {
 944         case NL80211_IFTYPE_ADHOC:
 945                 return le32_to_cpu(txq_timer->ibss);
 946         case NL80211_IFTYPE_STATION:
 947                 return le32_to_cpu(txq_timer->bss);
 948         case NL80211_IFTYPE_AP:
 949                 return le32_to_cpu(txq_timer->softap);
 950         case NL80211_IFTYPE_P2P_CLIENT:
 951                 return le32_to_cpu(txq_timer->p2p_client);
 952         case NL80211_IFTYPE_P2P_GO:
 953                 return le32_to_cpu(txq_timer->p2p_go);
 954         case NL80211_IFTYPE_P2P_DEVICE:
 955                 return le32_to_cpu(txq_timer->p2p_device);
 956         default:
 957                 WARN_ON(1);
 958                 return mvm->cfg->base_params->wd_timeout;
 959         }
 960 }
 961
 962 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 963                              const char *errmsg)
 964 {
 965         struct iwl_fw_dbg_trigger_tlv *trig;
 966         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
 967
 968         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
 969                 goto out;
 970
 971         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
 972         trig_mlme = (void *)trig->data;
 973         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 974                 goto out;
 975
 976         if (trig_mlme->stop_connection_loss &&
 977             --trig_mlme->stop_connection_loss)
 978                 goto out;
 979
 980         iwl_mvm_fw_dbg_collect_trig(mvm, trig, "%s", errmsg);
 981
 982 out:
 983         ieee80211_connection_loss(vif);
 984 }