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e13c0c59e0
This mapping is transport related. This allows us to remove the notion of tx queue from the tx path in the upper layer. iwl_wake_any_queue moved to transport layer since it needs to access these mappings. The TX API is nicer now: int (*tx)(struct iwl_trans *trans, struct sk_buff *skb, struct iwl_device_cmd *dev_cmd, u8 ctx, u8 sta_id); Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
157 lines
4.3 KiB
C
157 lines
4.3 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#ifndef __iwl_helpers_h__
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#define __iwl_helpers_h__
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#include <linux/ctype.h>
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#include <net/mac80211.h>
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#include "iwl-io.h"
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#define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
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static inline struct ieee80211_conf *ieee80211_get_hw_conf(
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struct ieee80211_hw *hw)
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{
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return &hw->conf;
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}
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/**
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* iwl_queue_inc_wrap - increment queue index, wrap back to beginning
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* @index -- current index
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* @n_bd -- total number of entries in queue (must be power of 2)
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*/
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static inline int iwl_queue_inc_wrap(int index, int n_bd)
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{
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return ++index & (n_bd - 1);
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}
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/**
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* iwl_queue_dec_wrap - decrement queue index, wrap back to end
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* @index -- current index
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* @n_bd -- total number of entries in queue (must be power of 2)
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*/
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static inline int iwl_queue_dec_wrap(int index, int n_bd)
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{
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return --index & (n_bd - 1);
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}
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/*
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* we have 8 bits used like this:
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*
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* 7 6 5 4 3 2 1 0
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* | | | | | | | |
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* | | | | | | +-+-------- AC queue (0-3)
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* | | | | | |
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* | +-+-+-+-+------------ HW queue ID
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* |
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* +---------------------- unused
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*/
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static inline void iwl_set_swq_id(struct iwl_tx_queue *txq, u8 ac, u8 hwq)
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{
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BUG_ON(ac > 3); /* only have 2 bits */
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BUG_ON(hwq > 31); /* only use 5 bits */
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txq->swq_id = (hwq << 2) | ac;
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}
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static inline void iwl_wake_queue(struct iwl_priv *priv,
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struct iwl_tx_queue *txq)
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{
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u8 queue = txq->swq_id;
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u8 ac = queue & 3;
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u8 hwq = (queue >> 2) & 0x1f;
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if (unlikely(!priv->mac80211_registered))
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return;
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if (test_and_clear_bit(hwq, priv->queue_stopped))
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if (atomic_dec_return(&priv->queue_stop_count[ac]) <= 0)
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ieee80211_wake_queue(priv->hw, ac);
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}
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static inline void iwl_stop_queue(struct iwl_priv *priv,
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struct iwl_tx_queue *txq)
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{
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u8 queue = txq->swq_id;
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u8 ac = queue & 3;
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u8 hwq = (queue >> 2) & 0x1f;
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if (unlikely(!priv->mac80211_registered))
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return;
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if (!test_and_set_bit(hwq, priv->queue_stopped))
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if (atomic_inc_return(&priv->queue_stop_count[ac]) > 0)
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ieee80211_stop_queue(priv->hw, ac);
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}
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#ifdef ieee80211_stop_queue
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#undef ieee80211_stop_queue
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#endif
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#define ieee80211_stop_queue DO_NOT_USE_ieee80211_stop_queue
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#ifdef ieee80211_wake_queue
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#undef ieee80211_wake_queue
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#endif
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#define ieee80211_wake_queue DO_NOT_USE_ieee80211_wake_queue
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static inline void iwl_enable_rfkill_int(struct iwl_priv *priv)
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{
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IWL_DEBUG_ISR(priv, "Enabling rfkill interrupt\n");
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iwl_write32(bus(priv), CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
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}
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/**
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* iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time
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* @priv -- pointer to iwl_priv data structure
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* @tsf_bits -- number of bits need to shift for masking)
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*/
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static inline u32 iwl_beacon_time_mask_low(struct iwl_priv *priv,
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u16 tsf_bits)
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{
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return (1 << tsf_bits) - 1;
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}
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/**
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* iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time
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* @priv -- pointer to iwl_priv data structure
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* @tsf_bits -- number of bits need to shift for masking)
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*/
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static inline u32 iwl_beacon_time_mask_high(struct iwl_priv *priv,
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u16 tsf_bits)
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{
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return ((1 << (32 - tsf_bits)) - 1) << tsf_bits;
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}
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#endif /* __iwl_helpers_h__ */
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