[deliverable/linux.git] / include / asm-i386 / acpi.h

/*
 *  asm-i386/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>

#include <asm/system.h>		/* defines cmpxchg */

#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_ht;
extern int acpi_pci_disabled;
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);

#ifdef CONFIG_X86_IO_APIC
extern int skip_ioapic_setup;
extern int acpi_skip_timer_override;

extern void check_acpi_pci(void);

static inline void disable_ioapic_setup(void)
{
	skip_ioapic_setup = 1;
}

static inline int ioapic_setup_disabled(void)
{
	return skip_ioapic_setup;
}

#else
static inline void disable_ioapic_setup(void) { }
static inline void check_acpi_pci(void) { }

#endif

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 */


#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*/

extern u8 x86_acpiid_to_apicid[];

#define ARCH_HAS_POWER_INIT	1

#endif /*__KERNEL__*/

#endif /*_ASM_ACPI_H*/
Commit	Line	Data
1da177e4 LT	1	/*
	2	* asm-i386/acpi.h
	3	*
	4	* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
	5	* Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
	6	*
	7	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	24	*/
	25
	26	#ifndef _ASM_ACPI_H
	27	#define _ASM_ACPI_H
	28
	29	#ifdef __KERNEL__
	30
02df8b93 VP	31	#include <acpi/pdc_intel.h>
02df8b93 VP	32
1da177e4 LT	33	#include <asm/system.h> /* defines cmpxchg */
	34
	35	#define COMPILER_DEPENDENT_INT64 long long
	36	#define COMPILER_DEPENDENT_UINT64 unsigned long long
	37
	38	/*
	39	* Calling conventions:
	40	*
	41	* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
	42	* ACPI_EXTERNAL_XFACE - External ACPI interfaces
	43	* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
	44	* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
	45	*/
	46	#define ACPI_SYSTEM_XFACE
	47	#define ACPI_EXTERNAL_XFACE
	48	#define ACPI_INTERNAL_XFACE
	49	#define ACPI_INTERNAL_VAR_XFACE
	50
	51	/* Asm macros */
	52
	53	#define ACPI_ASM_MACROS
	54	#define BREAKPOINT3
	55	#define ACPI_DISABLE_IRQS() local_irq_disable()
	56	#define ACPI_ENABLE_IRQS() local_irq_enable()
	57	#define ACPI_FLUSH_CPU_CACHE() wbinvd()
	58
	59
	60	static inline int
	61	__acpi_acquire_global_lock (unsigned int *lock)
	62	{
	63	unsigned int old, new, val;
	64	do {
	65	old = *lock;
	66	new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
	67	val = cmpxchg(lock, old, new);
	68	} while (unlikely (val != old));
	69	return (new < 3) ? -1 : 0;
	70	}
	71
	72	static inline int
	73	__acpi_release_global_lock (unsigned int *lock)
	74	{
	75	unsigned int old, new, val;
	76	do {
	77	old = *lock;
	78	new = old & ~0x3;
	79	val = cmpxchg(lock, old, new);
	80	} while (unlikely (val != old));
	81	return old & 0x1;
	82	}
	83
	84	#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
	85	((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
	86
	87	#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
	88	((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
	89
	90	/*
	91	* Math helper asm macros
	92	*/
	93	#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
	94	asm("divl %2;" \
	95	:"=a"(q32), "=d"(r32) \
	96	:"r"(d32), \
97	"0"(n_lo), "1"(n_hi))
98
99
100	#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
101	asm("shrl $1,%2;" \
102	"rcrl $1,%3;" \
103	:"=r"(n_hi), "=r"(n_lo) \
104	:"0"(n_hi), "1"(n_lo))
105
888ba6c6	106	#ifdef CONFIG_ACPI
1da177e4 LT	107	extern int acpi_lapic;
	108	extern int acpi_ioapic;
	109	extern int acpi_noirq;
	110	extern int acpi_strict;
	111	extern int acpi_disabled;
	112	extern int acpi_ht;
	113	extern int acpi_pci_disabled;
	114	static inline void disable_acpi(void)
	115	{
	116	acpi_disabled = 1;
	117	acpi_ht = 0;
	118	acpi_pci_disabled = 1;
	119	acpi_noirq = 1;
	120	}
	121
	122	/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
	123	#define FIX_ACPI_PAGES 4
	124
	125	extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
	126
	127	#ifdef CONFIG_X86_IO_APIC
	128	extern int skip_ioapic_setup;
	129	extern int acpi_skip_timer_override;
	130
	131	extern void check_acpi_pci(void);
	132
	133	static inline void disable_ioapic_setup(void)
	134	{
	135	skip_ioapic_setup = 1;
	136	}
	137
	138	static inline int ioapic_setup_disabled(void)
	139	{
	140	return skip_ioapic_setup;
	141	}
	142
	143	#else
	144	static inline void disable_ioapic_setup(void) { }
	145	static inline void check_acpi_pci(void) { }
	146
	147	#endif
	148
1da177e4 LT	149	static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
	150	static inline void acpi_disable_pci(void)
	151	{
	152	acpi_pci_disabled = 1;
	153	acpi_noirq_set();
	154	}
	155	extern int acpi_irq_balance_set(char *str);
6153df7b LB	156
	157	#else /* !CONFIG_ACPI */
	158
	159	#define acpi_lapic 0
	160	#define acpi_ioapic 0
1da177e4 LT	161	static inline void acpi_noirq_set(void) { }
1da177e4 LT	162	static inline void acpi_disable_pci(void) { }
6153df7b LB	163
	164	#endif /* !CONFIG_ACPI */
	165
1da177e4 LT	166
	167	#ifdef CONFIG_ACPI_SLEEP
	168
	169	/* routines for saving/restoring kernel state */
	170	extern int acpi_save_state_mem(void);
	171	extern void acpi_restore_state_mem(void);
	172
	173	extern unsigned long acpi_wakeup_address;
	174
	175	/* early initialization routine */
	176	extern void acpi_reserve_bootmem(void);
	177
	178	#endif /CONFIG_ACPI_SLEEP/
	179
	180	extern u8 x86_acpiid_to_apicid[];
	181
05131ecc	182	#define ARCH_HAS_POWER_INIT 1
02df8b93	183
1da177e4 LT	184	#endif /__KERNEL__/
	185
	186	#endif /_ASM_ACPI_H/