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iwlwifi: parse command version TLV

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In newer firmware images there's a command version TLV that
states, for each listed command or notification, which version
of the command and/or notification structure is used. Read and
keep this data to be able to use it in the future.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2019-04-01 10:57:32 +02:00 committed by Luca Coelho
parent 1da3823d11
commit b081e23c45
3 changed files with 40 additions and 2 deletions
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17
drivers/net/wireless/intel/iwlwifi/fw/file.h
View File

@ -142,6 +142,7 @@ enum iwl_ucode_tlv_type {
IWL_UCODE_TLV_FW_DBG_DEST = 38,
IWL_UCODE_TLV_FW_DBG_CONF = 39,
IWL_UCODE_TLV_FW_DBG_TRIGGER = 40,
IWL_UCODE_TLV_CMD_VERSIONS = 48,
IWL_UCODE_TLV_FW_GSCAN_CAPA = 50,
IWL_UCODE_TLV_FW_MEM_SEG = 51,
IWL_UCODE_TLV_IML = 52,
@ -943,4 +944,20 @@ struct iwl_fw_dbg_conf_tlv {
struct iwl_fw_dbg_conf_hcmd hcmd;
} __packed;
#define IWL_FW_CMD_VER_UNKNOWN 99
/**
* struct iwl_fw_cmd_version - firmware command version entry
* @cmd: command ID
* @group: group ID
* @cmd_ver: command version
* @notif_ver: notification version
*/
struct iwl_fw_cmd_version {
u8 cmd;
u8 group;
u8 cmd_ver;
u8 notif_ver;
} __packed;
#endif /* __iwl_fw_file_h__ */

7
drivers/net/wireless/intel/iwlwifi/fw/img.h
View File

@ -8,7 +8,7 @@
* Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
* Copyright(c) 2016 Intel Deutschland GmbH
* Copyright(c) 2018 Intel Corporation
* Copyright(c) 2018 - 2019 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
@ -31,7 +31,7 @@
* Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
* Copyright(c) 2016 Intel Deutschland GmbH
* Copyright(c) 2018 Intel Corporation
* Copyright(c) 2018 - 2019 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -109,6 +109,9 @@ struct iwl_ucode_capabilities {
u32 error_log_size;
unsigned long _api[BITS_TO_LONGS(NUM_IWL_UCODE_TLV_API)];
unsigned long _capa[BITS_TO_LONGS(NUM_IWL_UCODE_TLV_CAPA)];
const struct iwl_fw_cmd_version *cmd_versions;
u32 n_cmd_versions;
};
static inline bool

18
drivers/net/wireless/intel/iwlwifi/iwl-drv.c
View File

@ -179,6 +179,7 @@ static void iwl_dealloc_ucode(struct iwl_drv *drv)
kfree(drv->fw.dbg.trigger_tlv[i]);
kfree(drv->fw.dbg.mem_tlv);
kfree(drv->fw.iml);
kfree(drv->fw.ucode_capa.cmd_versions);
for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
iwl_free_fw_img(drv, drv->fw.img + i);
@ -1144,6 +1145,23 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
if (iwlwifi_mod_params.enable_ini)
iwl_fw_dbg_copy_tlv(drv->trans, tlv, false);
break;
case IWL_UCODE_TLV_CMD_VERSIONS:
if (tlv_len % sizeof(struct iwl_fw_cmd_version)) {
IWL_ERR(drv,
"Invalid length for command versions: %u\n",
tlv_len);
tlv_len /= sizeof(struct iwl_fw_cmd_version);
tlv_len *= sizeof(struct iwl_fw_cmd_version);
}
if (WARN_ON(capa->cmd_versions))
return -EINVAL;
capa->cmd_versions = kmemdup(tlv_data, tlv_len,
GFP_KERNEL);
if (!capa->cmd_versions)
return -ENOMEM;
capa->n_cmd_versions =
tlv_len / sizeof(struct iwl_fw_cmd_version);
break;
default:
IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
break;