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iwlwifi: mvm: support new TX power command

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Add support for the new (bigger) TX power command. This doesn't
actually take advantage of the new capabilities (to set per-chain
TX power limits) but makes the code compatible with newer firmware
images expecting the larger command.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Johannes Berg 2015-08-18 15:15:36 +02:00 committed by Emmanuel Grumbach
parent a7b3bc91c5
commit da03f0296c
3 changed files with 37 additions and 10 deletions
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3
drivers/net/wireless/iwlwifi/iwl-fw-file.h
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@ -259,6 +259,8 @@ typedef unsigned int __bitwise__ iwl_ucode_tlv_api_t;
* @IWL_UCODE_TLV_API_NEW_VERSION: new versioning format
* @IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY: scan APIs use 8-level priority
* instead of 3.
* @IWL_UCODE_TLV_API_TX_POWER_CHAIN: TX power API has larger command size
* (command version 3) that supports per-chain limits
*/
enum iwl_ucode_tlv_api {
IWL_UCODE_TLV_API_BT_COEX_SPLIT = (__force iwl_ucode_tlv_api_t)3,
@ -274,6 +276,7 @@ enum iwl_ucode_tlv_api {
IWL_UCODE_TLV_API_STATS_V10 = (__force iwl_ucode_tlv_api_t)19,
IWL_UCODE_TLV_API_NEW_VERSION = (__force iwl_ucode_tlv_api_t)20,
IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY = (__force iwl_ucode_tlv_api_t)24,
IWL_UCODE_TLV_API_TX_POWER_CHAIN = (__force iwl_ucode_tlv_api_t)27,
};
typedef unsigned int __bitwise__ iwl_ucode_tlv_capa_t;

29
drivers/net/wireless/iwlwifi/mvm/fw-api-power.h
View File

@ -7,6 +7,7 @@
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright(c) 2015 Intel Deutschland GmbH
*
* 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
@ -33,6 +34,7 @@
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright(c) 2015 Intel Deutschland GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -310,17 +312,22 @@ struct iwl_reduce_tx_power_cmd {
__le16 pwr_restriction;
} __packed; /* TX_REDUCED_POWER_API_S_VER_1 */
enum iwl_dev_tx_power_cmd_mode {
IWL_TX_POWER_MODE_SET_MAC = 0,
IWL_TX_POWER_MODE_SET_DEVICE = 1,
IWL_TX_POWER_MODE_SET_CHAINS = 2,
}; /* TX_POWER_REDUCED_FLAGS_TYPE_API_E_VER_2 */;
/**
* struct iwl_dev_tx_power_cmd - TX power reduction command
* REDUCE_TX_POWER_CMD = 0x9f
* @set_mode: 0 - MAC tx power, 1 - device tx power
* struct iwl_dev_tx_power_cmd_v2 - TX power reduction command
* @set_mode: see &enum iwl_dev_tx_power_cmd_mode
* @mac_context_id: id of the mac ctx for which we are reducing TX power.
* @pwr_restriction: TX power restriction in 1/8 dBms.
* @dev_24: device TX power restriction in 1/8 dBms
* @dev_52_low: device TX power restriction upper band - low
* @dev_52_high: device TX power restriction upper band - high
*/
struct iwl_dev_tx_power_cmd {
struct iwl_dev_tx_power_cmd_v2 {
__le32 set_mode;
__le32 mac_context_id;
__le16 pwr_restriction;
@ -329,6 +336,20 @@ struct iwl_dev_tx_power_cmd {
__le16 dev_52_high;
} __packed; /* TX_REDUCED_POWER_API_S_VER_2 */
#define IWL_NUM_CHAIN_LIMITS 2
#define IWL_NUM_SUB_BANDS 5
/**
* struct iwl_dev_tx_power_cmd - TX power reduction command
* @v2: version 2 of the command, embedded here for easier software handling
* @per_chain_restriction: per chain restrictions
*/
struct iwl_dev_tx_power_cmd {
/* v3 is just an extension of v2 - keep this here */
struct iwl_dev_tx_power_cmd_v2 v2;
__le16 per_chain_restriction[IWL_NUM_CHAIN_LIMITS][IWL_NUM_SUB_BANDS];
} __packed; /* TX_REDUCED_POWER_API_S_VER_3 */
#define IWL_DEV_MAX_TX_POWER 0x7FFF
/**

15
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -1595,20 +1595,23 @@ static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
s16 tx_power)
{
struct iwl_dev_tx_power_cmd cmd = {
.set_mode = 0,
.mac_context_id =
.v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
.v2.mac_context_id =
cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
.pwr_restriction = cpu_to_le16(8 * tx_power),
.v2.pwr_restriction = cpu_to_le16(8 * tx_power),
};
int len = sizeof(cmd);
if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_DEV))
return iwl_mvm_set_tx_power_old(mvm, vif, tx_power);
if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
cmd.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
sizeof(cmd), &cmd);
if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
len = sizeof(cmd.v2);
return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
}
static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,