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 #include "fw/api/rx.h"
  14 #include "fw/api/datapath.h"
  15
  16 void iwl_fw_runtime_init(struct iwl_fw_runtime *fwrt, struct iwl_trans *trans,
  17                         const struct iwl_fw *fw,
  18                         const struct iwl_fw_runtime_ops *ops, void *ops_ctx,
  19                         struct dentry *dbgfs_dir)
  20 {
  21         int i;
  22
  23         memset(fwrt, 0, sizeof(*fwrt));
  24         fwrt->trans = trans;
  25         fwrt->fw = fw;
  26         fwrt->dev = trans->dev;
  27         fwrt->dump.conf = FW_DBG_INVALID;
  28         fwrt->ops = ops;
  29         fwrt->ops_ctx = ops_ctx;
  30         for (i = 0; i < IWL_FW_RUNTIME_DUMP_WK_NUM; i++) {
  31                 fwrt->dump.wks[i].idx = i;
  32                 INIT_DELAYED_WORK(&fwrt->dump.wks[i].wk, iwl_fw_error_dump_wk);
  33         }
  34         iwl_fwrt_dbgfs_register(fwrt, dbgfs_dir);
  35 }
  36 IWL_EXPORT_SYMBOL(iwl_fw_runtime_init);
  37
  38 void iwl_fw_runtime_suspend(struct iwl_fw_runtime *fwrt)
  39 {
  40         iwl_fw_suspend_timestamp(fwrt);
  41         iwl_dbg_tlv_time_point(fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_START, NULL);
  42 }
  43 IWL_EXPORT_SYMBOL(iwl_fw_runtime_suspend);
  44
  45 void iwl_fw_runtime_resume(struct iwl_fw_runtime *fwrt)
  46 {
  47         iwl_dbg_tlv_time_point(fwrt, IWL_FW_INI_TIME_POINT_HOST_D3_END, NULL);
  48         iwl_fw_resume_timestamp(fwrt);
  49 }
  50 IWL_EXPORT_SYMBOL(iwl_fw_runtime_resume);
  51
  52 /* set device type and latency */
  53 int iwl_set_soc_latency(struct iwl_fw_runtime *fwrt)
  54 {
  55         struct iwl_soc_configuration_cmd cmd = {};
  56         struct iwl_host_cmd hcmd = {
  57                 .id = iwl_cmd_id(SOC_CONFIGURATION_CMD, SYSTEM_GROUP, 0),
  58                 .data[0] = &cmd,
  59                 .len[0] = sizeof(cmd),
  60         };
  61         int ret;
  62
  63         /*
  64          * In VER_1 of this command, the discrete value is considered
  65          * an integer; In VER_2, it's a bitmask.  Since we have only 2
  66          * values in VER_1, this is backwards-compatible with VER_2,
  67          * as long as we don't set any other bits.
  68          */
  69         if (!fwrt->trans->trans_cfg->integrated)
  70                 cmd.flags = cpu_to_le32(SOC_CONFIG_CMD_FLAGS_DISCRETE);
  71
  72         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_NONE !=
  73                      SOC_FLAGS_LTR_APPLY_DELAY_NONE);
  74         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_200US !=
  75                      SOC_FLAGS_LTR_APPLY_DELAY_200);
  76         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_2500US !=
  77                      SOC_FLAGS_LTR_APPLY_DELAY_2500);
  78         BUILD_BUG_ON(IWL_CFG_TRANS_LTR_DELAY_1820US !=
  79                      SOC_FLAGS_LTR_APPLY_DELAY_1820);
  80
  81         if (fwrt->trans->trans_cfg->ltr_delay != IWL_CFG_TRANS_LTR_DELAY_NONE &&
  82             !WARN_ON(!fwrt->trans->trans_cfg->integrated))
  83                 cmd.flags |= le32_encode_bits(fwrt->trans->trans_cfg->ltr_delay,
  84                                               SOC_FLAGS_LTR_APPLY_DELAY_MASK);
  85
  86         if (iwl_fw_lookup_cmd_ver(fwrt->fw, IWL_ALWAYS_LONG_GROUP,
  87                                   SCAN_REQ_UMAC,
  88                                   IWL_FW_CMD_VER_UNKNOWN) >= 2 &&
  89             fwrt->trans->trans_cfg->low_latency_xtal)
  90                 cmd.flags |= cpu_to_le32(SOC_CONFIG_CMD_FLAGS_LOW_LATENCY);
  91
  92         cmd.latency = cpu_to_le32(fwrt->trans->trans_cfg->xtal_latency);
  93
  94         ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
  95         if (ret)
  96                 IWL_ERR(fwrt, "Failed to set soc latency: %d\n", ret);
  97         return ret;
  98 }
  99 IWL_EXPORT_SYMBOL(iwl_set_soc_latency);
 100
 101 int iwl_configure_rxq(struct iwl_fw_runtime *fwrt)
 102 {
 103         int i, num_queues, size, ret;
 104         struct iwl_rfh_queue_config *cmd;
 105         struct iwl_host_cmd hcmd = {
 106                 .id = WIDE_ID(DATA_PATH_GROUP, RFH_QUEUE_CONFIG_CMD),
 107                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 108         };
 109
 110         /*
 111          * The default queue is configured via context info, so if we
 112          * have a single queue, there's nothing to do here.
 113          */
 114         if (fwrt->trans->num_rx_queues == 1)
 115                 return 0;
 116
 117         if (fwrt->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_22000)
 118                 return 0;
 119
 120         /* skip the default queue */
 121         num_queues = fwrt->trans->num_rx_queues - 1;
 122
 123         size = struct_size(cmd, data, num_queues);
 124
 125         cmd = kzalloc(size, GFP_KERNEL);
 126         if (!cmd)
 127                 return -ENOMEM;
 128
 129         cmd->num_queues = num_queues;
 130
 131         for (i = 0; i < num_queues; i++) {
 132                 struct iwl_trans_rxq_dma_data data;
 133
 134                 cmd->data[i].q_num = i + 1;
 135                 iwl_trans_get_rxq_dma_data(fwrt->trans, i + 1, &data);
 136
 137                 cmd->data[i].fr_bd_cb = cpu_to_le64(data.fr_bd_cb);
 138                 cmd->data[i].urbd_stts_wrptr =
 139                         cpu_to_le64(data.urbd_stts_wrptr);
 140                 cmd->data[i].ur_bd_cb = cpu_to_le64(data.ur_bd_cb);
 141                 cmd->data[i].fr_bd_wid = cpu_to_le32(data.fr_bd_wid);
 142         }
 143
 144         hcmd.data[0] = cmd;
 145         hcmd.len[0] = size;
 146
 147         ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
 148
 149         kfree(cmd);
 150
 151         if (ret)
 152                 IWL_ERR(fwrt, "Failed to configure RX queues: %d\n", ret);
 153
 154         return ret;
 155 }
 156 IWL_EXPORT_SYMBOL(iwl_configure_rxq);