drivers/net/wireless/intel/iwlwifi/fw/smem.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 - 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
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called COPYING.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <linuxwifi@intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  * BSD LICENSE
  29  *
  30  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  31  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  32  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  33  * All rights reserved.
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  35  * Redistribution and use in source and binary forms, with or without
  36  * modification, are permitted provided that the following conditions
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  47  *    from this software without specific prior written permission.
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  49  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  50  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  51  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  52  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  53  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  54  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  55  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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  59  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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  61  *****************************************************************************/
  62 #include "iwl-drv.h"
  63 #include "runtime.h"
  64 #include "fw/api/commands.h"
  65
  66 static void iwl_parse_shared_mem_22000(struct iwl_fw_runtime *fwrt,
  67                                        struct iwl_rx_packet *pkt)
  68 {
  69         struct iwl_shared_mem_cfg *mem_cfg = (void *)pkt->data;
  70         int i, lmac;
  71         int lmac_num = le32_to_cpu(mem_cfg->lmac_num);
  72
  73         if (WARN_ON(lmac_num > ARRAY_SIZE(mem_cfg->lmac_smem)))
  74                 return;
  75
  76         fwrt->smem_cfg.num_lmacs = lmac_num;
  77         fwrt->smem_cfg.num_txfifo_entries =
  78                 ARRAY_SIZE(mem_cfg->lmac_smem[0].txfifo_size);
  79         fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo2_size);
  80
  81         for (lmac = 0; lmac < lmac_num; lmac++) {
  82                 struct iwl_shared_mem_lmac_cfg *lmac_cfg =
  83                         &mem_cfg->lmac_smem[lmac];
  84
  85                 for (i = 0; i < ARRAY_SIZE(lmac_cfg->txfifo_size); i++)
  86                         fwrt->smem_cfg.lmac[lmac].txfifo_size[i] =
  87                                 le32_to_cpu(lmac_cfg->txfifo_size[i]);
  88                 fwrt->smem_cfg.lmac[lmac].rxfifo1_size =
  89                         le32_to_cpu(lmac_cfg->rxfifo1_size);
  90         }
  91 }
  92
  93 static void iwl_parse_shared_mem(struct iwl_fw_runtime *fwrt,
  94                                  struct iwl_rx_packet *pkt)
  95 {
  96         struct iwl_shared_mem_cfg_v2 *mem_cfg = (void *)pkt->data;
  97         int i;
  98
  99         fwrt->smem_cfg.num_lmacs = 1;
 100
 101         fwrt->smem_cfg.num_txfifo_entries = ARRAY_SIZE(mem_cfg->txfifo_size);
 102         for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++)
 103                 fwrt->smem_cfg.lmac[0].txfifo_size[i] =
 104                         le32_to_cpu(mem_cfg->txfifo_size[i]);
 105
 106         fwrt->smem_cfg.lmac[0].rxfifo1_size =
 107                 le32_to_cpu(mem_cfg->rxfifo_size[0]);
 108         fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo_size[1]);
 109
 110         /* new API has more data, from rxfifo_addr field and on */
 111         if (fw_has_capa(&fwrt->fw->ucode_capa,
 112                         IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG)) {
 113                 BUILD_BUG_ON(sizeof(fwrt->smem_cfg.internal_txfifo_size) !=
 114                              sizeof(mem_cfg->internal_txfifo_size));
 115
 116                 fwrt->smem_cfg.internal_txfifo_addr =
 117                         le32_to_cpu(mem_cfg->internal_txfifo_addr);
 118
 119                 for (i = 0;
 120                      i < ARRAY_SIZE(fwrt->smem_cfg.internal_txfifo_size);
 121                      i++)
 122                         fwrt->smem_cfg.internal_txfifo_size[i] =
 123                                 le32_to_cpu(mem_cfg->internal_txfifo_size[i]);
 124         }
 125 }
 126
 127 void iwl_get_shared_mem_conf(struct iwl_fw_runtime *fwrt)
 128 {
 129         struct iwl_host_cmd cmd = {
 130                 .flags = CMD_WANT_SKB,
 131                 .data = { NULL, },
 132                 .len = { 0, },
 133         };
 134         struct iwl_rx_packet *pkt;
 135
 136         if (fw_has_capa(&fwrt->fw->ucode_capa,
 137                         IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG))
 138                 cmd.id = iwl_cmd_id(SHARED_MEM_CFG_CMD, SYSTEM_GROUP, 0);
 139         else
 140                 cmd.id = SHARED_MEM_CFG;
 141
 142         if (WARN_ON(iwl_trans_send_cmd(fwrt->trans, &cmd)))
 143                 return;
 144
 145         pkt = cmd.resp_pkt;
 146         if (fwrt->trans->cfg->device_family == IWL_DEVICE_FAMILY_22000)
 147                 iwl_parse_shared_mem_22000(fwrt, pkt);
 148         else
 149                 iwl_parse_shared_mem(fwrt, pkt);
 150
 151         IWL_DEBUG_INFO(fwrt, "SHARED MEM CFG: got memory offsets/sizes\n");
 152
 153         iwl_free_resp(&cmd);
 154 }
 155 IWL_EXPORT_SYMBOL(iwl_get_shared_mem_conf);