LXR linux/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) 2013 - 2015 Intel Mobile Communications GmbH
   9 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  10 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation
  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) 2013 - 2015 Intel Mobile Communications GmbH
  31 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  32 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation
  33 * All rights reserved.
  34 *
  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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  39 *  * Redistributions of source code must retain the above copyright
  40 *    notice, this list of conditions and the following disclaimer.
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  42 *    notice, this list of conditions and the following disclaimer in
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  44 *    distribution.
  45 *  * Neither the name Intel Corporation nor the names of its
  46 *    contributors may be used to endorse or promote products derived
  47 *    from this software without specific prior written permission.
  48 *
  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
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  59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  60 *
  61 *****************************************************************************/
  62#include "iwl-drv.h"
  63#include "runtime.h"
  64#include "fw/api/commands.h"
  65
  66static 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        u8 api_ver = iwl_fw_lookup_notif_ver(fwrt->fw, SYSTEM_GROUP,
  73                                             SHARED_MEM_CFG_CMD, 0);
  74
  75        if (WARN_ON(lmac_num > ARRAY_SIZE(mem_cfg->lmac_smem)))
  76                return;
  77
  78        fwrt->smem_cfg.num_lmacs = lmac_num;
  79        fwrt->smem_cfg.num_txfifo_entries =
  80                ARRAY_SIZE(mem_cfg->lmac_smem[0].txfifo_size);
  81        fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo2_size);
  82
  83        if (api_ver >= 4 &&
  84            !WARN_ON_ONCE(iwl_rx_packet_payload_len(pkt) < sizeof(*mem_cfg))) {
  85                fwrt->smem_cfg.rxfifo2_control_size =
  86                        le32_to_cpu(mem_cfg->rxfifo2_control_size);
  87        }
  88
  89        for (lmac = 0; lmac < lmac_num; lmac++) {
  90                struct iwl_shared_mem_lmac_cfg *lmac_cfg =
  91                        &mem_cfg->lmac_smem[lmac];
  92
  93                for (i = 0; i < ARRAY_SIZE(lmac_cfg->txfifo_size); i++)
  94                        fwrt->smem_cfg.lmac[lmac].txfifo_size[i] =
  95                                le32_to_cpu(lmac_cfg->txfifo_size[i]);
  96                fwrt->smem_cfg.lmac[lmac].rxfifo1_size =
  97                        le32_to_cpu(lmac_cfg->rxfifo1_size);
  98        }
  99}
 100
 101static void iwl_parse_shared_mem(struct iwl_fw_runtime *fwrt,
 102                                 struct iwl_rx_packet *pkt)
 103{
 104        struct iwl_shared_mem_cfg_v2 *mem_cfg = (void *)pkt->data;
 105        int i;
 106
 107        fwrt->smem_cfg.num_lmacs = 1;
 108
 109        fwrt->smem_cfg.num_txfifo_entries = ARRAY_SIZE(mem_cfg->txfifo_size);
 110        for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++)
 111                fwrt->smem_cfg.lmac[0].txfifo_size[i] =
 112                        le32_to_cpu(mem_cfg->txfifo_size[i]);
 113
 114        fwrt->smem_cfg.lmac[0].rxfifo1_size =
 115                le32_to_cpu(mem_cfg->rxfifo_size[0]);
 116        fwrt->smem_cfg.rxfifo2_size = le32_to_cpu(mem_cfg->rxfifo_size[1]);
 117
 118        /* new API has more data, from rxfifo_addr field and on */
 119        if (fw_has_capa(&fwrt->fw->ucode_capa,
 120                        IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG)) {
 121                BUILD_BUG_ON(sizeof(fwrt->smem_cfg.internal_txfifo_size) !=
 122                             sizeof(mem_cfg->internal_txfifo_size));
 123
 124                fwrt->smem_cfg.internal_txfifo_addr =
 125                        le32_to_cpu(mem_cfg->internal_txfifo_addr);
 126
 127                for (i = 0;
 128                     i < ARRAY_SIZE(fwrt->smem_cfg.internal_txfifo_size);
 129                     i++)
 130                        fwrt->smem_cfg.internal_txfifo_size[i] =
 131                                le32_to_cpu(mem_cfg->internal_txfifo_size[i]);
 132        }
 133}
 134
 135void iwl_get_shared_mem_conf(struct iwl_fw_runtime *fwrt)
 136{
 137        struct iwl_host_cmd cmd = {
 138                .flags = CMD_WANT_SKB,
 139                .data = { NULL, },
 140                .len = { 0, },
 141        };
 142        struct iwl_rx_packet *pkt;
 143        int ret;
 144
 145        if (fw_has_capa(&fwrt->fw->ucode_capa,
 146                        IWL_UCODE_TLV_CAPA_EXTEND_SHARED_MEM_CFG))
 147                cmd.id = iwl_cmd_id(SHARED_MEM_CFG_CMD, SYSTEM_GROUP, 0);
 148        else
 149                cmd.id = SHARED_MEM_CFG;
 150
 151        ret = iwl_trans_send_cmd(fwrt->trans, &cmd);
 152
 153        if (ret) {
 154                WARN(ret != -ERFKILL,
 155                     "Could not send the SMEM command: %d\n", ret);
 156                return;
 157        }
 158
 159        pkt = cmd.resp_pkt;
 160        if (fwrt->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000)
 161                iwl_parse_shared_mem_22000(fwrt, pkt);
 162        else
 163                iwl_parse_shared_mem(fwrt, pkt);
 164
 165        IWL_DEBUG_INFO(fwrt, "SHARED MEM CFG: got memory offsets/sizes\n");
 166
 167        iwl_free_resp(&cmd);
 168}
 169IWL_EXPORT_SYMBOL(iwl_get_shared_mem_conf);
 170