150 lines
4.4 KiB
C
150 lines
4.4 KiB
C
/******************************************************************************
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*
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* Name: aclinuxex.h - Extra OS specific defines, etc. for Linux
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2014, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#ifndef __ACLINUXEX_H__
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#define __ACLINUXEX_H__
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#ifdef __KERNEL__
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#ifndef ACPI_USE_NATIVE_DIVIDE
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#ifndef ACPI_DIV_64_BY_32
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#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
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do { \
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UINT64 (__n) = ((UINT64) n_hi) << 32 | (n_lo); \
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(r32) = do_div ((__n), (d32)); \
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(q32) = (UINT32) (__n); \
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} while (0)
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#endif
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#ifndef ACPI_SHIFT_RIGHT_64
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#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
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do { \
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(n_lo) >>= 1; \
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(n_lo) |= (((n_hi) & 1) << 31); \
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(n_hi) >>= 1; \
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} while (0)
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#endif
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#endif
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/*
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* Overrides for in-kernel ACPICA
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*/
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ACPI_STATUS __init AcpiOsInitialize (
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void);
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ACPI_STATUS AcpiOsTerminate (
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void);
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/*
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* The irqs_disabled() check is for resume from RAM.
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* Interrupts are off during resume, just like they are for boot.
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* However, boot has (system_state != SYSTEM_RUNNING)
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* to quiet __might_sleep() in kmalloc() and resume does not.
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*/
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static inline void *
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AcpiOsAllocate (
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ACPI_SIZE Size)
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{
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return kmalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
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}
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static inline void *
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AcpiOsAllocateZeroed (
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ACPI_SIZE Size)
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{
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return kzalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
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}
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static inline void
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AcpiOsFree (
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void *Memory)
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{
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kfree (Memory);
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}
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static inline void *
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AcpiOsAcquireObject (
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ACPI_CACHE_T *Cache)
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{
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return kmem_cache_zalloc (Cache,
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irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
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}
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static inline ACPI_THREAD_ID
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AcpiOsGetThreadId (
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void)
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{
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return (ACPI_THREAD_ID) (unsigned long) current;
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}
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/*
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* When lockdep is enabled, the spin_lock_init() macro stringifies it's
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* argument and uses that as a name for the lock in debugging.
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* By executing spin_lock_init() in a macro the key changes from "lock" for
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* all locks to the name of the argument of acpi_os_create_lock(), which
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* prevents lockdep from reporting false positives for ACPICA locks.
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*/
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#define AcpiOsCreateLock(__Handle) \
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({ \
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spinlock_t *Lock = ACPI_ALLOCATE(sizeof(*Lock)); \
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if (Lock) { \
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*(__Handle) = Lock; \
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spin_lock_init(*(__Handle)); \
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} \
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Lock ? AE_OK : AE_NO_MEMORY; \
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})
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/*
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* OSL interfaces added by Linux
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*/
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void
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EarlyAcpiOsUnmapMemory (
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void __iomem *Virt,
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ACPI_SIZE Size);
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#endif /* __KERNEL__ */
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#endif /* __ACLINUXEX_H__ */
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