/*

 *  asm-x86_64/acpi.h

 *

 *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>

 *  Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>

  *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 */

#ifndef _ASM_ACPI_H

#define _ASM_ACPI_H

#ifdef __KERNEL__

#include <acpi/pdc_intel.h>

#define COMPILER_DEPENDENT_INT64   long long

#define COMPILER_DEPENDENT_UINT64  unsigned long long

/*

 * Calling conventions:

 *

 * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)

 * ACPI_EXTERNAL_XFACE      - External ACPI interfaces 

 * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces

 * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces

 */

#define ACPI_SYSTEM_XFACE

#define ACPI_EXTERNAL_XFACE

#define ACPI_INTERNAL_XFACE

#define ACPI_INTERNAL_VAR_XFACE

/* Asm macros */

#define ACPI_ASM_MACROS

#define BREAKPOINT3

#define ACPI_DISABLE_IRQS() local_irq_disable()

#define ACPI_ENABLE_IRQS()  local_irq_enable()

#define ACPI_FLUSH_CPU_CACHE()	wbinvd()

static inline int

__acpi_acquire_global_lock (unsigned int *lock)

{

	unsigned int old, new, val;

	do {

		old = *lock;

		new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));

		val = cmpxchg(lock, old, new);

	} while (unlikely (val != old));

	return (new < 3) ? -1 : 0;

}

static inline int

__acpi_release_global_lock (unsigned int *lock)

{

	unsigned int old, new, val;

	do {

		old = *lock;

		new = old & ~0x3;

		val = cmpxchg(lock, old, new);

	} while (unlikely (val != old));

	return old & 0x1;

}

#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \

	((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))

#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \

	((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))

/*

 * Math helper asm macros

 */

#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \

        asm("divl %2;"        \

        :"=a"(q32), "=d"(r32) \

        :"r"(d32),            \

        "0"(n_lo), "1"(n_hi))

#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \

    asm("shrl   $1,%2;"             \

        "rcrl   $1,%3;"             \

        :"=r"(n_hi), "=r"(n_lo)     \

        :"0"(n_hi), "1"(n_lo))

#ifdef CONFIG_ACPI

extern int acpi_lapic;

extern int acpi_ioapic;

extern int acpi_noirq;

extern int acpi_strict;

extern int acpi_disabled;

extern int acpi_pci_disabled;

extern int acpi_ht;

static inline void disable_acpi(void) 

{ 

	acpi_disabled = 1; 

	acpi_ht = 0; 

	acpi_pci_disabled = 1;

	acpi_noirq = 1;

}

/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */

#define FIX_ACPI_PAGES 4

extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);

static inline void acpi_noirq_set(void) { acpi_noirq = 1; }

static inline void acpi_disable_pci(void) 

{

	acpi_pci_disabled = 1; 

	acpi_noirq_set();

}

extern int acpi_irq_balance_set(char *str);

#else	/* !CONFIG_ACPI */

#define acpi_lapic 0

#define acpi_ioapic 0

static inline void acpi_noirq_set(void) { }

static inline void acpi_disable_pci(void) { }

#endif /* !CONFIG_ACPI */

extern int acpi_numa;

extern int acpi_scan_nodes(unsigned long start, unsigned long end);

#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)

#ifdef CONFIG_ACPI_SLEEP

/* routines for saving/restoring kernel state */

extern int acpi_save_state_mem(void);

extern void acpi_restore_state_mem(void);

extern unsigned long acpi_wakeup_address;

/* early initialization routine */

extern void acpi_reserve_bootmem(void);

#endif /*CONFIG_ACPI_SLEEP*/

#define boot_cpu_physical_apicid boot_cpu_id

extern int acpi_disabled;

extern int acpi_pci_disabled;

extern u8 x86_acpiid_to_apicid[];

#define ARCH_HAS_POWER_INIT 1

extern int acpi_skip_timer_override;

#endif /*__KERNEL__*/

#endif /*_ASM_ACPI_H*/