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linux/drivers/net/wireless/iwlegacy/iwl-4965.h
Johannes Berg 7bb4568372 mac80211: make tx() operation return void 
The return value of the tx operation is commonly
misused by drivers, leading to errors. All drivers
will drop frames if they fail to TX the frame, and
they must also properly manage the queues (if they
didn't, mac80211 would already warn).

Removing the ability for drivers to return a BUSY
value also allows significant cleanups of the TX
TX handling code in mac80211.

Note that this also fixes a bug in ath9k_htc, the
old "return -1" there was wrong.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Sedat Dilek <sedat.dilek@googlemail.com> [ath5k]
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> [rt2x00]
Acked-by: Larry Finger <Larry.Finger@lwfinger.net> [b43, rtl8187, rtlwifi]
Acked-by: Luciano Coelho <coelho@ti.com> [wl12xx]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-25 15:32:34 -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 - 2011 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 - 2011 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_4965_h__
#define __iwl_4965_h__
#include "iwl-dev.h"
/* configuration for the _4965 devices */
extern struct iwl_cfg iwl4965_cfg;
extern struct iwl_mod_params iwl4965_mod_params;
extern struct ieee80211_ops iwl4965_hw_ops;
/* tx queue */
void iwl4965_free_tfds_in_queue(struct iwl_priv *priv,
int sta_id, int tid, int freed);
/* RXON */
void iwl4965_set_rxon_chain(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
/* uCode */
int iwl4965_verify_ucode(struct iwl_priv *priv);
/* lib */
void iwl4965_check_abort_status(struct iwl_priv *priv,
u8 frame_count, u32 status);
void iwl4965_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
int iwl4965_hw_nic_init(struct iwl_priv *priv);
int iwl4965_dump_fh(struct iwl_priv *priv, char **buf, bool display);
/* rx */
void iwl4965_rx_queue_restock(struct iwl_priv *priv);
void iwl4965_rx_replenish(struct iwl_priv *priv);
void iwl4965_rx_replenish_now(struct iwl_priv *priv);
void iwl4965_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
int iwl4965_rxq_stop(struct iwl_priv *priv);
int iwl4965_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band);
void iwl4965_rx_reply_rx(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
void iwl4965_rx_handle(struct iwl_priv *priv);
/* tx */
void iwl4965_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
struct iwl_tx_queue *txq,
dma_addr_t addr, u16 len, u8 reset, u8 pad);
int iwl4965_hw_tx_queue_init(struct iwl_priv *priv,
struct iwl_tx_queue *txq);
void iwl4965_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
struct ieee80211_tx_info *info);
int iwl4965_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
int iwl4965_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid, u16 *ssn);
int iwl4965_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid);
int iwl4965_txq_check_empty(struct iwl_priv *priv,
int sta_id, u8 tid, int txq_id);
void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
void iwl4965_hw_txq_ctx_free(struct iwl_priv *priv);
int iwl4965_txq_ctx_alloc(struct iwl_priv *priv);
void iwl4965_txq_ctx_reset(struct iwl_priv *priv);
void iwl4965_txq_ctx_stop(struct iwl_priv *priv);
void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask);
/*
* Acquire priv->lock before calling this function !
*/
void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index);
/**
* iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue
* @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed
* @scd_retry: (1) Indicates queue will be used in aggregation mode
*
* NOTE: Acquire priv->lock before calling this function !
*/
void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
struct iwl_tx_queue *txq,
int tx_fifo_id, int scd_retry);
static inline u32 iwl4965_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:
return IEEE80211_TX_STAT_TX_FILTERED;
default:
return 0;
}
}
static inline bool iwl4965_is_tx_success(u32 status)
{
status &= TX_STATUS_MSK;
return (status == TX_STATUS_SUCCESS) ||
(status == TX_STATUS_DIRECT_DONE);
}
u8 iwl4965_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx, u8 valid);
/* rx */
void iwl4965_rx_missed_beacon_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
bool iwl4965_good_plcp_health(struct iwl_priv *priv,
struct iwl_rx_packet *pkt);
void iwl4965_rx_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
void iwl4965_reply_statistics(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
/* scan */
int iwl4965_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif);
/* station mgmt */
int iwl4965_manage_ibss_station(struct iwl_priv *priv,
struct ieee80211_vif *vif, bool add);
/* hcmd */
int iwl4965_send_beacon_cmd(struct iwl_priv *priv);
#ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
const char *iwl4965_get_tx_fail_reason(u32 status);
#else
static inline const char *
iwl4965_get_tx_fail_reason(u32 status) { return ""; }
#endif
/* station management */
int iwl4965_alloc_bcast_station(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
int iwl4965_add_bssid_station(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
const u8 *addr, u8 *sta_id_r);
int iwl4965_remove_default_wep_key(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key);
int iwl4965_set_default_wep_key(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key);
int iwl4965_restore_default_wep_keys(struct iwl_priv *priv,
struct iwl_rxon_context *ctx);
int iwl4965_set_dynamic_key(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key, u8 sta_id);
int iwl4965_remove_dynamic_key(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *key, u8 sta_id);
void iwl4965_update_tkip_key(struct iwl_priv *priv,
struct iwl_rxon_context *ctx,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta, u32 iv32, u16 *phase1key);
int iwl4965_sta_tx_modify_enable_tid(struct iwl_priv *priv,
int sta_id, int tid);
int iwl4965_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
int tid, u16 ssn);
int iwl4965_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
int tid);
void iwl4965_sta_modify_sleep_tx_count(struct iwl_priv *priv,
int sta_id, int cnt);
int iwl4965_update_bcast_stations(struct iwl_priv *priv);
/* rate */
static inline u32 iwl4965_ant_idx_to_flags(u8 ant_idx)
{
return BIT(ant_idx) << RATE_MCS_ANT_POS;
}
static inline u8 iwl4965_hw_get_rate(__le32 rate_n_flags)
{
return le32_to_cpu(rate_n_flags) & 0xFF;
}
static inline __le32 iwl4965_hw_set_rate_n_flags(u8 rate, u32 flags)
{
return cpu_to_le32(flags|(u32)rate);
}
/* eeprom */
void iwl4965_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac);
int iwl4965_eeprom_acquire_semaphore(struct iwl_priv *priv);
void iwl4965_eeprom_release_semaphore(struct iwl_priv *priv);
int iwl4965_eeprom_check_version(struct iwl_priv *priv);
/* mac80211 handlers (for 4965) */
void iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
int iwl4965_mac_start(struct ieee80211_hw *hw);
void iwl4965_mac_stop(struct ieee80211_hw *hw);
void iwl4965_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast);
int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key);
void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_key_conf *keyconf,
struct ieee80211_sta *sta,
u32 iv32, u16 *phase1key);
int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 *ssn,
u8 buf_size);
int iwl4965_mac_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
void iwl4965_mac_channel_switch(struct ieee80211_hw *hw,
struct ieee80211_channel_switch *ch_switch);
#endif /* __iwl_4965_h__ */
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