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linux/drivers/net/wireless/iwlwifi/iwl-agn.h
Johannes Berg 48a2d66f58 iwlwifi: don't pass iwl_rx_mem_buffer to upper layers 
struct iwl_rx_mem_buffer implementation details
(DMA address, list pointers) that the upper
layers don't need. Introduce iwl_rx_cmd_buffer
that is passed upstream and only contains the
needed data (the page). Additionally, access
this data only via accessor functions, allowing
us to change the implementation in the future.
These accessors are rxb_addr() (as before) and
rxb_steal_page() to take ownership of the data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-06 15:16:12 -05:00

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/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
*
* 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
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#ifndef __iwl_agn_h__
#define __iwl_agn_h__
#include "iwl-dev.h"
struct iwl_ucode_capabilities;
extern struct ieee80211_ops iwlagn_hw_ops;
static inline void iwl_set_calib_hdr(struct iwl_calib_hdr *hdr, u8 cmd)
{
hdr->op_code = cmd;
hdr->first_group = 0;
hdr->groups_num = 1;
hdr->data_valid = 1;
}
void iwl_down(struct iwl_priv *priv);
void iwl_cancel_deferred_work(struct iwl_priv *priv);
void iwlagn_prepare_restart(struct iwl_priv *priv);
void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb);
int __must_check iwl_rx_dispatch(struct iwl_op_mode *op_mode,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, u8 ac);
void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, u8 ac);
void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state);
void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, u8 ac);
void iwl_nic_error(struct iwl_op_mode *op_mode);
/* MAC80211 */
struct ieee80211_hw *iwl_alloc_all(void);
int iwlagn_mac_setup_register(struct iwl_priv *priv,
struct iwl_ucode_capabilities *capa);
void iwlagn_mac_unregister(struct iwl_priv *priv);
/* RXON */
int iwlagn_set_pan_params(struct iwl_priv *priv);
int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed);
void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u32 changes);
void iwlagn_config_ht40(struct ieee80211_conf *conf,
struct iwl_rxon_context *ctx);
/* uCode */
int iwlagn_rx_calib_result(struct iwl_priv *priv,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags);
/* lib */
int iwlagn_send_tx_power(struct iwl_priv *priv);
void iwlagn_temperature(struct iwl_priv *priv);
u16 iwl_eeprom_calib_version(struct iwl_shared *shrd);
int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control);
void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control);
int iwlagn_send_beacon_cmd(struct iwl_priv *priv);
#ifdef CONFIG_PM_SLEEP
int iwlagn_send_patterns(struct iwl_priv *priv,
struct cfg80211_wowlan *wowlan);
int iwlagn_suspend(struct iwl_priv *priv,
struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan);
#endif
/* rx */
int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band);
void iwl_setup_rx_handlers(struct iwl_priv *priv);
/* tx */
int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid, u16 *ssn);
int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid, u8 buf_size);
int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid);
int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
static inline u32 iwl_tx_status_to_mac80211(u32 status)
{
status &= TX_STATUS_MSK;
switch (status) {
case TX_STATUS_SUCCESS:
case TX_STATUS_DIRECT_DONE:
return IEEE80211_TX_STAT_ACK;
case TX_STATUS_FAIL_DEST_PS:
case TX_STATUS_FAIL_PASSIVE_NO_RX:
return IEEE80211_TX_STAT_TX_FILTERED;
default:
return 0;
}
}
static inline bool iwl_is_tx_success(u32 status)
{
status &= TX_STATUS_MSK;
return (status == TX_STATUS_SUCCESS) ||
(status == TX_STATUS_DIRECT_DONE);
}
u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx, u8 valid);
/* scan */
void iwlagn_post_scan(struct iwl_priv *priv);
void iwlagn_disable_roc(struct iwl_priv *priv);
/* bt coex */
void iwlagn_send_advance_bt_config(struct iwl_priv *priv);
int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv);
void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv);
void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv);
void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv);
void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena);
#ifdef CONFIG_IWLWIFI_DEBUG
const char *iwl_get_tx_fail_reason(u32 status);
const char *iwl_get_agg_tx_fail_reason(u16 status);
#else
static inline const char *iwl_get_tx_fail_reason(u32 status) { return ""; }
static inline const char *iwl_get_agg_tx_fail_reason(u16 status) { return ""; }
#endif
/* station management */
int iwlagn_manage_ibss_station(struct iwl_priv *priv,
struct ieee80211_vif *vif, bool add);
#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
#define IWL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of
being activated */
#define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211;
(this is for the IBSS BSSID stations) */
#define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */
void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
void iwl_clear_ucode_stations(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
void iwl_dealloc_bcast_stations(struct iwl_priv *priv);
int iwl_get_free_ucode_key_offset(struct iwl_priv *priv);
int iwl_send_add_sta(struct iwl_priv *priv,
struct iwl_addsta_cmd *sta, u8 flags);
int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
const u8 *addr, bool is_ap,
struct ieee80211_sta *sta, u8 *sta_id_r);
int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
const u8 *addr);
u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
const u8 *addr, bool is_ap, struct ieee80211_sta *sta);
void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
u8 sta_id, struct iwl_link_quality_cmd *link_cmd);
int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
struct iwl_link_quality_cmd *lq, u8 flags, bool init);
int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd);
static inline int iwl_sta_id(struct ieee80211_sta *sta)
{
if (WARN_ON(!sta))
return IWL_INVALID_STATION;
return ((struct iwl_station_priv *)sta->drv_priv)->sta_id;
}
/**
* iwl_sta_id_or_broadcast - return sta_id or broadcast sta
* @priv: iwl priv
* @context: the current context
* @sta: mac80211 station
*
* In certain circumstances mac80211 passes a station pointer
* that may be %NULL, for example during TX or key setup. In
* that case, we need to use the broadcast station, so this
* inline wraps that pattern.
*/
static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv,
struct iwl_rxon_context *context,
struct ieee80211_sta *sta)
{
int sta_id;
if (!sta)
return context->bcast_sta_id;
sta_id = iwl_sta_id(sta);
/*
* mac80211 should not be passing a partially
* initialised station!
*/
WARN_ON(sta_id == IWL_INVALID_STATION);
return sta_id;
}
int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
int iwlagn_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
const u8 *addr, u8 *sta_id_r);
int iwl_remove_default_wep_key(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key);
int iwl_set_default_wep_key(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key);
int iwl_restore_default_wep_keys(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
int iwl_set_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key,
struct ieee80211_sta *sta);
int iwl_remove_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key,
struct ieee80211_sta *sta);
void iwl_update_tkip_key(struct iwl_priv *priv,
struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta, u32 iv32, u16 *phase1key);
int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid);
int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
int tid, u16 ssn);
int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
int tid);
void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt);
int iwl_update_bcast_station(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
int iwl_update_bcast_stations(struct iwl_priv *priv);
/* rate */
static inline u32 iwl_ant_idx_to_flags(u8 ant_idx)
{
return BIT(ant_idx) << RATE_MCS_ANT_POS;
}
static inline u8 iwl_hw_get_rate(__le32 rate_n_flags)
{
return le32_to_cpu(rate_n_flags) & RATE_MCS_RATE_MSK;
}
static inline __le32 iwl_hw_set_rate_n_flags(u8 rate, u32 flags)
{
return cpu_to_le32(flags|(u32)rate);
}
/* eeprom */
void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv);
void iwl_eeprom_get_mac(const struct iwl_shared *shrd, u8 *mac);
extern int iwl_alive_start(struct iwl_priv *priv);
/* svtool */
#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
extern int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data,
int len);
extern int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct netlink_callback *cb,
void *data, int len);
extern void iwl_testmode_init(struct iwl_priv *priv);
extern void iwl_testmode_cleanup(struct iwl_priv *priv);
#else
static inline
int iwlagn_mac_testmode_cmd(struct ieee80211_hw *hw, void *data, int len)
{
return -ENOSYS;
}
static inline
int iwlagn_mac_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *skb,
struct netlink_callback *cb,
void *data, int len)
{
return -ENOSYS;
}
static inline
void iwl_testmode_init(struct iwl_priv *priv)
{
}
static inline
void iwl_testmode_cleanup(struct iwl_priv *priv)
{
}
#endif
#ifdef CONFIG_IWLWIFI_DEBUG
void iwl_print_rx_config_cmd(struct iwl_priv *priv,
enum iwl_rxon_context_id ctxid);
#else
static inline void iwl_print_rx_config_cmd(struct iwl_priv *priv,
enum iwl_rxon_context_id ctxid)
{
}
#endif
#endif /* __iwl_agn_h__ */
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