/******************************************************************************
 *
 * Name: aclinux.h - OS specific defines, etc. for Linux
 *
 *****************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2014, Intel Corp.
 * All rights reserved.
 *
 * 2. License
 *
 * 2.1. This is your license from Intel Corp. under its intellectual property
 * rights. You may have additional license terms from the party that provided
 * you this software, covering your right to use that party's intellectual
 * property rights.
 *
 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
 * copy of the source code appearing in this file ("Covered Code") an
 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
 * base code distributed originally by Intel ("Original Intel Code") to copy,
 * make derivatives, distribute, use and display any portion of the Covered
 * Code in any form, with the right to sublicense such rights; and
 *
 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
 * license (with the right to sublicense), under only those claims of Intel
 * patents that are infringed by the Original Intel Code, to make, use, sell,
 * offer to sell, and import the Covered Code and derivative works thereof
 * solely to the minimum extent necessary to exercise the above copyright
 * license, and in no event shall the patent license extend to any additions
 * to or modifications of the Original Intel Code. No other license or right
 * is granted directly or by implication, estoppel or otherwise;
 *
 * The above copyright and patent license is granted only if the following
 * conditions are met:
 *
 * 3. Conditions
 *
 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification with rights to further distribute source must include
 * the above Copyright Notice, the above License, this list of Conditions,
 * and the following Disclaimer and Export Compliance provision. In addition,
 * Licensee must cause all Covered Code to which Licensee contributes to
 * contain a file documenting the changes Licensee made to create that Covered
 * Code and the date of any change. Licensee must include in that file the
 * documentation of any changes made by any predecessor Licensee. Licensee
 * must include a prominent statement that the modification is derived,
 * directly or indirectly, from Original Intel Code.
 *
 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification without rights to further distribute source must
 * include the following Disclaimer and Export Compliance provision in the
 * documentation and/or other materials provided with distribution. In
 * addition, Licensee may not authorize further sublicense of source of any
 * portion of the Covered Code, and must include terms to the effect that the
 * license from Licensee to its licensee is limited to the intellectual
 * property embodied in the software Licensee provides to its licensee, and
 * not to intellectual property embodied in modifications its licensee may
 * make.
 *
 * 3.3. Redistribution of Executable. Redistribution in executable form of any
 * substantial portion of the Covered Code or modification must reproduce the
 * above Copyright Notice, and the following Disclaimer and Export Compliance
 * provision in the documentation and/or other materials provided with the
 * distribution.
 *
 * 3.4. Intel retains all right, title, and interest in and to the Original
 * Intel Code.
 *
 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
 * Intel shall be used in advertising or otherwise to promote the sale, use or
 * other dealings in products derived from or relating to the Covered Code
 * without prior written authorization from Intel.
 *
 * 4. Disclaimer and Export Compliance
 *
 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
 * PARTICULAR PURPOSE.
 *
 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
 * LIMITED REMEDY.
 *
 * 4.3. Licensee shall not export, either directly or indirectly, any of this
 * software or system incorporating such software without first obtaining any
 * required license or other approval from the U. S. Department of Commerce or
 * any other agency or department of the United States Government. In the
 * event Licensee exports any such software from the United States or
 * re-exports any such software from a foreign destination, Licensee shall
 * ensure that the distribution and export/re-export of the software is in
 * compliance with all laws, regulations, orders, or other restrictions of the
 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 * any of its subsidiaries will export/re-export any technical data, process,
 * software, or service, directly or indirectly, to any country for which the
 * United States government or any agency thereof requires an export license,
 * other governmental approval, or letter of assurance, without first obtaining
 * such license, approval or letter.
 *
 *****************************************************************************/

#ifndef __ACLINUX_H__
#define __ACLINUX_H__

/* Common (in-kernel/user-space) ACPICA configuration */

#define ACPI_USE_SYSTEM_CLIBRARY
#define ACPI_USE_DO_WHILE_0
#define ACPI_MUTEX_TYPE             ACPI_BINARY_SEMAPHORE


#ifdef __KERNEL__

#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/sched.h>
#include <linux/atomic.h>
#include <linux/math64.h>
#include <linux/slab.h>
#include <linux/spinlock_types.h>
#ifdef EXPORT_ACPI_INTERFACES
#include <linux/export.h>
#endif
#include <asm/acpi.h>

/* Host-dependent types and defines for in-kernel ACPICA */

#define ACPI_MACHINE_WIDTH          BITS_PER_LONG
#define ACPI_EXPORT_SYMBOL(symbol)  EXPORT_SYMBOL(symbol);
#define strtoul                     simple_strtoul

#define ACPI_CACHE_T                struct kmem_cache
#define ACPI_SPINLOCK               spinlock_t *
#define ACPI_CPU_FLAGS              unsigned long

#else /* !__KERNEL__ */

#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h>

/* Define/disable kernel-specific declarators */

#ifndef __init
#define __init
#endif

#ifndef __iomem
#define __iomem
#endif

/* Host-dependent types and defines for user-space ACPICA */

#define ACPI_FLUSH_CPU_CACHE()
#define ACPI_CAST_PTHREAD_T(Pthread) ((ACPI_THREAD_ID) (Pthread))

#if defined(__ia64__)    || defined(__x86_64__) ||\
    defined(__aarch64__) || defined(__PPC64__)
#define ACPI_MACHINE_WIDTH          64
#define COMPILER_DEPENDENT_INT64    long
#define COMPILER_DEPENDENT_UINT64   unsigned long
#else
#define ACPI_MACHINE_WIDTH          32
#define COMPILER_DEPENDENT_INT64    long long
#define COMPILER_DEPENDENT_UINT64   unsigned long long
#define ACPI_USE_NATIVE_DIVIDE
#endif

#ifndef __cdecl
#define __cdecl
#endif

#endif /* __KERNEL__ */

/* Linux uses GCC */

#include "acgcc.h"


#ifdef __KERNEL__

/*
 * FIXME: Inclusion of actypes.h
 * Linux kernel need this before defining inline OSL interfaces as
 * actypes.h need to be included to find ACPICA type definitions.
 * Since from ACPICA's perspective, the actypes.h should be included after
 * acenv.h (aclinux.h), this leads to a inclusion mis-ordering issue.
 */
#include <acpi/actypes.h>

/*
 * Overrides for in-kernel ACPICA
 */
ACPI_STATUS __init AcpiOsInitialize (
    void);
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsInitialize

ACPI_STATUS AcpiOsTerminate (
    void);
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsTerminate

/*
 * Memory allocation/deallocation
 */

/*
 * The irqs_disabled() check is for resume from RAM.
 * Interrupts are off during resume, just like they are for boot.
 * However, boot has  (system_state != SYSTEM_RUNNING)
 * to quiet __might_sleep() in kmalloc() and resume does not.
 */
static inline void *
AcpiOsAllocate (
    ACPI_SIZE               Size)
{
    return kmalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
}
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsAllocate

/* Use native linux version of AcpiOsAllocateZeroed */

static inline void *
AcpiOsAllocateZeroed (
    ACPI_SIZE               Size)
{
    return kzalloc (Size, irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
}
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsAllocateZeroed
#define USE_NATIVE_ALLOCATE_ZEROED

static inline void
AcpiOsFree (
    void                   *Memory)
{
    kfree (Memory);
}
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsFree

static inline void *
AcpiOsAcquireObject (
    ACPI_CACHE_T           *Cache)
{
    return kmem_cache_zalloc (Cache,
        irqs_disabled () ? GFP_ATOMIC : GFP_KERNEL);
}
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsAcquireObject

static inline ACPI_THREAD_ID
AcpiOsGetThreadId (
    void)
{
    return (ACPI_THREAD_ID) (unsigned long) current;
}
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetThreadId

#ifndef CONFIG_PREEMPT

/*
 * Used within ACPICA to show where it is safe to preempt execution
 * when CONFIG_PREEMPT=n
 */
#define ACPI_PREEMPTION_POINT() \
    do { \
        if (!irqs_disabled()) \
            cond_resched(); \
    } while (0)

#endif

/*
 * When lockdep is enabled, the spin_lock_init() macro stringifies it's
 * argument and uses that as a name for the lock in debugging.
 * By executing spin_lock_init() in a macro the key changes from "lock" for
 * all locks to the name of the argument of acpi_os_create_lock(), which
 * prevents lockdep from reporting false positives for ACPICA locks.
 */
#define AcpiOsCreateLock(__Handle) \
    ({ \
        spinlock_t *Lock = ACPI_ALLOCATE(sizeof(*Lock)); \
        if (Lock) { \
            *(__Handle) = Lock; \
            spin_lock_init(*(__Handle)); \
        } \
        Lock ? AE_OK : AE_NO_MEMORY; \
    })
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsCreateLock

void __iomem *
AcpiOsMapMemory (
    ACPI_PHYSICAL_ADDRESS   Where,
    ACPI_SIZE               Length);
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsMapMemory

void
AcpiOsUnmapMemory (
    void __iomem            *LogicalAddress,
    ACPI_SIZE               Size);
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsUnmapMemory

/*
 * OSL interfaces used by debugger/disassembler
 */
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsReadable
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsWritable

/*
 * OSL interfaces used by utilities
 */
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsRedirectOutput
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetLine
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetTableByName
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetTableByIndex
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetTableByAddress
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsOpenDirectory
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsGetNextFilename
#define ACPI_USE_ALTERNATE_PROTOTYPE_AcpiOsCloseDirectory

/*
 * OSL interfaces added by Linux
 */
void
EarlyAcpiOsUnmapMemory (
    void __iomem            *Virt,
    ACPI_SIZE               Size);

#endif /* __KERNEL__ */

#endif /* __ACLINUX_H__ */
