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

   1 /******************************************************************************
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   6  * GPL LICENSE SUMMARY
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   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
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  13  * it under the terms of version 2 of the GNU General Public License as
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  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
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  50  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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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_a000(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_A000)
 147                 iwl_parse_shared_mem_a000(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);