mirror of https://gitee.com/openkylin/linux.git
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 - 2015, 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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u64 (__n) = ((u64) n_hi) << 32 | (n_lo); \
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(r32) = do_div ((__n), (d32)); \
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(q32) = (u32) (__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 acpi_os_initialize(void);
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acpi_status acpi_os_terminate(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 *acpi_os_allocate(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 *acpi_os_allocate_zeroed(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 acpi_os_free(void *memory)
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{
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kfree(memory);
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}
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static inline void *acpi_os_acquire_object(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 acpi_os_get_thread_id(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 acpi_os_create_lock(__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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static inline u8 acpi_os_readable(void *pointer, acpi_size length)
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{
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return TRUE;
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}
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static inline acpi_status acpi_os_initialize_command_signals(void)
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{
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return AE_OK;
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}
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static inline void acpi_os_terminate_command_signals(void)
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{
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return;
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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 early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size);
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#endif /* __KERNEL__ */
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#endif /* __ACLINUXEX_H__ */
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