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

   1 /******************************************************************************
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   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
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  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
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  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
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  41  * modification, are permitted provided that the following conditions
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  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include "iwl-drv.h"
  68 #include "runtime.h"
  69 #include "fw/api/nvm-reg.h"
  70 #include "fw/api/commands.h"
  71 #include "iwl-nvm-parse.h"
  72
  73 struct iwl_nvm_data *iwl_fw_get_nvm(struct iwl_fw_runtime *fwrt)
  74 {
  75         struct iwl_nvm_get_info cmd = {};
  76         struct iwl_nvm_get_info_rsp *rsp;
  77         struct iwl_trans *trans = fwrt->trans;
  78         struct iwl_nvm_data *nvm;
  79         struct iwl_host_cmd hcmd = {
  80                 .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL,
  81                 .data = { &cmd, },
  82                 .len = { sizeof(cmd) },
  83                 .id = WIDE_ID(REGULATORY_AND_NVM_GROUP, NVM_GET_INFO)
  84         };
  85         int  ret;
  86         bool lar_fw_supported = !iwlwifi_mod_params.lar_disable &&
  87                                 fw_has_capa(&fwrt->fw->ucode_capa,
  88                                             IWL_UCODE_TLV_CAPA_LAR_SUPPORT);
  89
  90         ret = iwl_trans_send_cmd(trans, &hcmd);
  91         if (ret)
  92                 return ERR_PTR(ret);
  93
  94         if (WARN(iwl_rx_packet_payload_len(hcmd.resp_pkt) != sizeof(*rsp),
  95                  "Invalid payload len in NVM response from FW %d",
  96                  iwl_rx_packet_payload_len(hcmd.resp_pkt))) {
  97                 ret = -EINVAL;
  98                 goto out;
  99         }
 100
 101         rsp = (void *)hcmd.resp_pkt->data;
 102         if (le32_to_cpu(rsp->general.flags) & NVM_GENERAL_FLAGS_EMPTY_OTP)
 103                 IWL_INFO(fwrt, "OTP is empty\n");
 104
 105         nvm = kzalloc(sizeof(*nvm) +
 106                       sizeof(struct ieee80211_channel) * IWL_NUM_CHANNELS,
 107                       GFP_KERNEL);
 108         if (!nvm) {
 109                 ret = -ENOMEM;
 110                 goto out;
 111         }
 112
 113         iwl_set_hw_address_from_csr(trans, nvm);
 114         /* TODO: if platform NVM has MAC address - override it here */
 115
 116         if (!is_valid_ether_addr(nvm->hw_addr)) {
 117                 IWL_ERR(fwrt, "no valid mac address was found\n");
 118                 ret = -EINVAL;
 119                 goto err_free;
 120         }
 121
 122         IWL_INFO(trans, "base HW address: %pM\n", nvm->hw_addr);
 123
 124         /* Initialize general data */
 125         nvm->nvm_version = le16_to_cpu(rsp->general.nvm_version);
 126
 127         /* Initialize MAC sku data */
 128         nvm->sku_cap_11ac_enable =
 129                 le32_to_cpu(rsp->mac_sku.enable_11ac);
 130         nvm->sku_cap_11n_enable =
 131                 le32_to_cpu(rsp->mac_sku.enable_11n);
 132         nvm->sku_cap_band_24GHz_enable =
 133                 le32_to_cpu(rsp->mac_sku.enable_24g);
 134         nvm->sku_cap_band_52GHz_enable =
 135                 le32_to_cpu(rsp->mac_sku.enable_5g);
 136         nvm->sku_cap_mimo_disabled =
 137                 le32_to_cpu(rsp->mac_sku.mimo_disable);
 138
 139         /* Initialize PHY sku data */
 140         nvm->valid_tx_ant = (u8)le32_to_cpu(rsp->phy_sku.tx_chains);
 141         nvm->valid_rx_ant = (u8)le32_to_cpu(rsp->phy_sku.rx_chains);
 142
 143         /* Initialize regulatory data */
 144         nvm->lar_enabled =
 145                 le32_to_cpu(rsp->regulatory.lar_enabled) && lar_fw_supported;
 146
 147         iwl_init_sbands(trans->dev, trans->cfg, nvm,
 148                         rsp->regulatory.channel_profile,
 149                         nvm->valid_tx_ant & fwrt->fw->valid_tx_ant,
 150                         nvm->valid_rx_ant & fwrt->fw->valid_rx_ant,
 151                         nvm->lar_enabled, false);
 152
 153         iwl_free_resp(&hcmd);
 154         return nvm;
 155
 156 err_free:
 157         kfree(nvm);
 158 out:
 159         iwl_free_resp(&hcmd);
 160         return ERR_PTR(ret);
 161 }
 162 IWL_EXPORT_SYMBOL(iwl_fw_get_nvm);