1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #ifndef __iwl_helpers_h__
31 #define __iwl_helpers_h__
33 #include <linux/ctype.h>
34 #include <net/mac80211.h>
38 #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
41 static inline struct ieee80211_conf *ieee80211_get_hw_conf(
42 struct ieee80211_hw *hw)
48 * iwl_queue_inc_wrap - increment queue index, wrap back to beginning
49 * @index -- current index
50 * @n_bd -- total number of entries in queue (must be power of 2)
52 static inline int iwl_queue_inc_wrap(int index, int n_bd)
54 return ++index & (n_bd - 1);
58 * iwl_queue_dec_wrap - decrement queue index, wrap back to end
59 * @index -- current index
60 * @n_bd -- total number of entries in queue (must be power of 2)
62 static inline int iwl_queue_dec_wrap(int index, int n_bd)
64 return --index & (n_bd - 1);
67 static inline void iwl_enable_rfkill_int(struct iwl_priv *priv)
69 IWL_DEBUG_ISR(priv, "Enabling rfkill interrupt\n");
70 iwl_write32(bus(priv), CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
74 * iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time
75 * @priv -- pointer to iwl_priv data structure
76 * @tsf_bits -- number of bits need to shift for masking)
78 static inline u32 iwl_beacon_time_mask_low(struct iwl_priv *priv,
81 return (1 << tsf_bits) - 1;
85 * iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time
86 * @priv -- pointer to iwl_priv data structure
87 * @tsf_bits -- number of bits need to shift for masking)
89 static inline u32 iwl_beacon_time_mask_high(struct iwl_priv *priv,
92 return ((1 << (32 - tsf_bits)) - 1) << tsf_bits;
95 #endif /* __iwl_helpers_h__ */