drivers/net/wireless/intel/iwlwifi/fw/init.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2017 Intel Deutschland GmbH
   4  * Copyright (C) 2019-2020 Intel Corporation
   5  */
   6 #include "iwl-drv.h"
   7 #include "runtime.h"
   8 #include "dbg.h"
   9 #include "debugfs.h"
  10
  11 #include "fw/api/soc.h"
  12 #include "fw/api/commands.h"
  13
  14 void iwl_fw_runtime_init(struct iwl_fw_runtime *fwrt, struct iwl_trans *trans,
  15                         const struct iwl_fw *fw,
  16                         const struct iwl_fw_runtime_ops *ops, void *ops_ctx,
  17                         struct dentry *dbgfs_dir)
  18 {
  19         int i;
  20
  21         memset(fwrt, 0, sizeof(*fwrt));
  22         fwrt->trans = trans;
  23         fwrt->fw = fw;
  24         fwrt->dev = trans->dev;
  25         fwrt->dump.conf = FW_DBG_INVALID;
  26         fwrt->ops = ops;
  27         fwrt->ops_ctx = ops_ctx;
  28         for (i = 0; i < IWL_FW_RUNTIME_DUMP_WK_NUM; i++) {
  29                 fwrt->dump.wks[i].idx = i;
  30                 INIT_DELAYED_WORK(&fwrt->dump.wks[i].wk, iwl_fw_error_dump_wk);
  31         }
  32         iwl_fwrt_dbgfs_register(fwrt, dbgfs_dir);
  33 }
  34 IWL_EXPORT_SYMBOL(iwl_fw_runtime_init);
  35
  36 void iwl_fw_runtime_suspend(struct iwl_fw_runtime *fwrt)
  37 {
  38         iwl_fw_suspend_timestamp(fwrt);
  39 }
  40 IWL_EXPORT_SYMBOL(iwl_fw_runtime_suspend);
  41
  42 void iwl_fw_runtime_resume(struct iwl_fw_runtime *fwrt)
  43 {
  44         iwl_fw_resume_timestamp(fwrt);
  45 }
  46 IWL_EXPORT_SYMBOL(iwl_fw_runtime_resume);
  47
  48 /* set device type and latency */
  49 int iwl_set_soc_latency(struct iwl_fw_runtime *fwrt)
  50 {
  51         struct iwl_soc_configuration_cmd cmd = {};
  52         struct iwl_host_cmd hcmd = {
  53                 .id = iwl_cmd_id(SOC_CONFIGURATION_CMD, SYSTEM_GROUP, 0),
  54                 .data[0] = &cmd,
  55                 .len[0] = sizeof(cmd),
  56         };
  57         int ret;
  58
  59         /*
  60          * In VER_1 of this command, the discrete value is considered
  61          * an integer; In VER_2, it's a bitmask.  Since we have only 2
  62          * values in VER_1, this is backwards-compatible with VER_2,
  63          * as long as we don't set any other bits.
  64          */
  65         if (!fwrt->trans->trans_cfg->integrated)
  66                 cmd.flags = cpu_to_le32(SOC_CONFIG_CMD_FLAGS_DISCRETE);
  67
  68         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_NONE !=
  69                      SOC_FLAGS_LTR_APPLY_DELAY_NONE);
  70         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_200US !=
  71                      SOC_FLAGS_LTR_APPLY_DELAY_200);
  72         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_2500US !=
  73                      SOC_FLAGS_LTR_APPLY_DELAY_2500);
  74         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_1820US !=
  75                      SOC_FLAGS_LTR_APPLY_DELAY_1820);
  76
  77         if (fwrt->trans->trans_cfg->ltr_delay != IWL_CFG_TRANS_LTR_DELAY_NONE &&
  78             !WARN_ON(!fwrt->trans->trans_cfg->integrated))
  79                 cmd.flags |= le32_encode_bits(fwrt->trans->trans_cfg->ltr_delay,
  80                                               SOC_FLAGS_LTR_APPLY_DELAY_MASK);
  81
  82         if (iwl_fw_lookup_cmd_ver(fwrt->fw, IWL_ALWAYS_LONG_GROUP,
  83                                   SCAN_REQ_UMAC,
  84                                   IWL_FW_CMD_VER_UNKNOWN) >= 2 &&
  85             fwrt->trans->trans_cfg->low_latency_xtal)
  86                 cmd.flags |= cpu_to_le32(SOC_CONFIG_CMD_FLAGS_LOW_LATENCY);
  87
  88         cmd.latency = cpu_to_le32(fwrt->trans->trans_cfg->xtal_latency);
  89
  90         ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
  91         if (ret)
  92                 IWL_ERR(fwrt, "Failed to set soc latency: %d\n", ret);
  93         return ret;
  94 }
  95 IWL_EXPORT_SYMBOL(iwl_set_soc_latency);