2 * Copyright (c) 2007 Michael Taylor
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer,
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12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 * redistribution must be conditioned upon including a substantially
14 * similar Disclaimer requirement for further binary redistribution.
15 * 3. Neither the names of the above-listed copyright holders nor the names
16 * of any contributors may be used to endorse or promote products derived
17 * from this software without specific prior written permission.
19 * Alternatively, this software may be distributed under the terms of the
20 * GNU General Public License ("GPL") version 2 as published by the Free
21 * Software Foundation.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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32 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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39 * This file provides some macros that are used by if_ath_hal.h,
40 * if_ath_hal_wrappers.h, and if_ath_hal_wrappers.c.
42 * The macros are provided for the HAL lock and for dynamically deciding whether
43 * to define the HAL wrapper functions as inline or in the implementation file
44 * at build time. i.e. inline for speed, or non-inline for debugging visibility
45 * into the HAL methods being called (despite obfuscation).
47 * The if_ath_hal.h file is generated from ath_hal/ah.h at build time by the
50 #ifndef _IF_ATH_HAL_MACROS_H_
51 #define _IF_ATH_HAL_MACROS_H_
53 #define ATH_HAL_LOCK_INIT(_sc) spin_lock_init(&(_sc)->sc_hal_lock)
54 #define ATH_HAL_LOCK_DESTROY(_sc)
55 #define ATH_HAL_LOCK_IRQ(_sc) do { \
56 unsigned long __sc_halLockflags; \
57 ATH_HAL_LOCK_CHECK(_sc); \
58 spin_lock_irqsave(&(_sc)->sc_hal_lock, __sc_halLockflags);
59 #define ATH_HAL_UNLOCK_IRQ(_sc) \
60 ATH_HAL_LOCK_ASSERT(_sc); \
61 spin_unlock_irqrestore(&(_sc)->sc_hal_lock, __sc_halLockflags); \
63 #define ATH_HAL_UNLOCK_IRQ_EARLY(_sc) \
64 ATH_HAL_LOCK_ASSERT(_sc); \
65 spin_unlock_irqrestore(&(_sc)->sc_hal_lock, __sc_halLockflags);
67 #if (defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)) && defined(spin_is_locked)
68 #define ATH_HAL_LOCK_ASSERT(_sc) \
69 KASSERT(spin_is_locked(&(_sc)->sc_hal_lock), ("HAL not locked!"))
70 #if (defined(ATH_DEBUG_SPINLOCKS))
71 #define ATH_HAL_LOCK_CHECK(_sc) do { \
72 if (spin_is_locked(&(_sc)->sc_hal_lock)) \
73 IPRINTF(_sc, "About to block on HAL lock! [%s:%d]\n", __func__, __LINE__); \
75 #else /* #if (defined(ATH_DEBUG_SPINLOCKS)) */
76 #define ATH_HAL_LOCK_CHECK(_sc)
77 #endif /* #if (defined(ATH_DEBUG_SPINLOCKS)) */
80 #define ATH_HAL_LOCK_ASSERT(_sc)
81 #define ATH_HAL_LOCK_CHECK(_sc)
84 #endif /* #ifndef _IF_ATH_HAL_MACROS_H_ */