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93220587f7
The new ACPICA OSL override mechanism is used to solve these issues
for the Linux OSL:
1. Linux can implement OSL using a macro.
2. Linux can implement OSL using an inlined function.
3. Linux can leave OSL not implemented for __KERNEL__ undefined code
fragments.
4. Linux can add sparse declarators (__iomem) to OSL.
5. Linux can add memory tuning declarators (__init/__exit) to OSL.
This patch also moves Linux specific OSL to aclinux.h which has not been
maintained in the ACPICA code base. Lv Zheng.
Known issue:
From ACPICA's perspective, actypes.h should be included after inclusion
of acenv.h. But currently in Linux, aclinux.h included by acenv.h has
included actypes.h to find ACPICA types for inline functions. This is a
known and existing issue and currently there is no real problem caused
by this issue for Linux kernel build. Thus this issue is not covered by
this cleanup commit.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
252 lines
7.7 KiB
C
252 lines
7.7 KiB
C
/******************************************************************************
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*
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* Name: aclinux.h - 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 - 2013, 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 __ACLINUX_H__
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#define __ACLINUX_H__
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/* Common (in-kernel/user-space) ACPICA configuration */
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#define ACPI_USE_SYSTEM_CLIBRARY
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#define ACPI_USE_DO_WHILE_0
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#define ACPI_MUTEX_TYPE ACPI_BINARY_SEMAPHORE
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#ifdef __KERNEL__
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/ctype.h>
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#include <linux/sched.h>
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#include <linux/atomic.h>
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#include <linux/math64.h>
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#include <linux/slab.h>
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#include <linux/spinlock_types.h>
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#ifdef EXPORT_ACPI_INTERFACES
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#include <linux/export.h>
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#endif
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#include <asm/acpi.h>
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/* Host-dependent types and defines for in-kernel ACPICA */
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#define ACPI_MACHINE_WIDTH BITS_PER_LONG
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#define ACPI_EXPORT_SYMBOL(symbol) EXPORT_SYMBOL(symbol);
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#define strtoul simple_strtoul
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#define acpi_cache_t struct kmem_cache
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#define acpi_spinlock spinlock_t *
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#define acpi_cpu_flags unsigned long
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#else /* !__KERNEL__ */
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <unistd.h>
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/* Host-dependent types and defines for user-space ACPICA */
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#define ACPI_FLUSH_CPU_CACHE()
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#define ACPI_CAST_PTHREAD_T(pthread) ((acpi_thread_id) (pthread))
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#if defined(__ia64__) || defined(__x86_64__) || defined(__aarch64__)
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#define ACPI_MACHINE_WIDTH 64
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#define COMPILER_DEPENDENT_INT64 long
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#define COMPILER_DEPENDENT_UINT64 unsigned long
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#else
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#define ACPI_MACHINE_WIDTH 32
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#define COMPILER_DEPENDENT_INT64 long long
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#define COMPILER_DEPENDENT_UINT64 unsigned long long
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#define ACPI_USE_NATIVE_DIVIDE
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#endif
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#ifndef __cdecl
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#define __cdecl
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#endif
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#endif /* __KERNEL__ */
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/* Linux uses GCC */
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#include <acpi/platform/acgcc.h>
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#ifdef __KERNEL__
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/*
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* FIXME: Inclusion of actypes.h
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* Linux kernel need this before defining inline OSL interfaces as
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* actypes.h need to be included to find ACPICA type definitions.
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* Since from ACPICA's perspective, the actypes.h should be included after
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* acenv.h (aclinux.h), this leads to a inclusion mis-ordering issue.
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*/
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#include <acpi/actypes.h>
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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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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_initialize
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acpi_status acpi_os_terminate(void);
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_terminate
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/*
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* Memory allocation/deallocation
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*/
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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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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate
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/* Use native linux version of acpi_os_allocate_zeroed */
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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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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_allocate_zeroed
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#define USE_NATIVE_ALLOCATE_ZEROED
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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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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_free
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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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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
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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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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
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#ifndef CONFIG_PREEMPT
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/*
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* Used within ACPICA to show where it is safe to preempt execution
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* when CONFIG_PREEMPT=n
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*/
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#define ACPI_PREEMPTION_POINT() \
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do { \
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if (!irqs_disabled()) \
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cond_resched(); \
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} while (0)
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#endif
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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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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
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void __iomem *acpi_os_map_memory(acpi_physical_address where, acpi_size length);
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_map_memory
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void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size);
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_unmap_memory
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/*
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* OSL interfaces used by debugger/disassembler
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*/
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_readable
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_writable
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/*
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* OSL interfaces used by utilities
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*/
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_redirect_output
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_line
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_name
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_index
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_table_by_address
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_directory
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_next_filename
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#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_directory
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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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void acpi_os_gpe_count(u32 gpe_number);
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void acpi_os_fixed_event_count(u32 fixed_event_number);
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acpi_status
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acpi_os_hotplug_execute(acpi_osd_exec_callback function, void *context);
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#endif /* __KERNEL__ */
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#endif /* __ACLINUX_H__ */
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