[linux-2.6-block.git] / include / asm-x86_64 / acpi.h

/*
 *  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*/

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*/
Commit	Line	Data
1da177e4 LT	1	/*
	2	* asm-x86_64/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	#define COMPILER_DEPENDENT_INT64 long long
	34	#define COMPILER_DEPENDENT_UINT64 unsigned long long
	35
	36	/*
	37	* Calling conventions:
	38	*
	39	* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
	40	* ACPI_EXTERNAL_XFACE - External ACPI interfaces
	41	* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
	42	* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
	43	*/
	44	#define ACPI_SYSTEM_XFACE
	45	#define ACPI_EXTERNAL_XFACE
	46	#define ACPI_INTERNAL_XFACE
	47	#define ACPI_INTERNAL_VAR_XFACE
	48
	49	/* Asm macros */
	50
	51	#define ACPI_ASM_MACROS
	52	#define BREAKPOINT3
	53	#define ACPI_DISABLE_IRQS() local_irq_disable()
	54	#define ACPI_ENABLE_IRQS() local_irq_enable()
	55	#define ACPI_FLUSH_CPU_CACHE() wbinvd()
	56
	57
	58	static inline int
	59	__acpi_acquire_global_lock (unsigned int *lock)
	60	{
	61	unsigned int old, new, val;
	62	do {
	63	old = *lock;
	64	new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
	65	val = cmpxchg(lock, old, new);
	66	} while (unlikely (val != old));
	67	return (new < 3) ? -1 : 0;
	68	}
	69
	70	static inline int
	71	__acpi_release_global_lock (unsigned int *lock)
	72	{
	73	unsigned int old, new, val;
	74	do {
	75	old = *lock;
	76	new = old & ~0x3;
	77	val = cmpxchg(lock, old, new);
	78	} while (unlikely (val != old));
	79	return old & 0x1;
	80	}
	81
	82	#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
	83	((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
	84
	85	#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
	86	((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
	87
	88	/*
	89	* Math helper asm macros
	90	*/
	91	#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
	92	asm("divl %2;" \
	93	:"=a"(q32), "=d"(r32) \
	94	:"r"(d32), \
	95	"0"(n_lo), "1"(n_hi))
	96
97
98	#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
99	asm("shrl $1,%2;" \
100	"rcrl $1,%3;" \
101	:"=r"(n_hi), "=r"(n_lo) \
102	:"0"(n_hi), "1"(n_lo))
103
888ba6c6	104	#ifdef CONFIG_ACPI
1da177e4 LT	105	extern int acpi_lapic;
	106	extern int acpi_ioapic;
	107	extern int acpi_noirq;
	108	extern int acpi_strict;
	109	extern int acpi_disabled;
	110	extern int acpi_pci_disabled;
	111	extern int acpi_ht;
	112	static inline void disable_acpi(void)
	113	{
	114	acpi_disabled = 1;
	115	acpi_ht = 0;
	116	acpi_pci_disabled = 1;
	117	acpi_noirq = 1;
	118	}
	119
	120	/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
	121	#define FIX_ACPI_PAGES 4
	122
	123	extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
1da177e4 LT	124	static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
	125	static inline void acpi_disable_pci(void)
	126	{
	127	acpi_pci_disabled = 1;
	128	acpi_noirq_set();
	129	}
	130	extern int acpi_irq_balance_set(char *str);
6153df7b LB	131
	132	#else /* !CONFIG_ACPI */
	133
	134	#define acpi_lapic 0
	135	#define acpi_ioapic 0
1da177e4 LT	136	static inline void acpi_noirq_set(void) { }
1da177e4 LT	137	static inline void acpi_disable_pci(void) { }
6153df7b LB	138
	139	#endif /* !CONFIG_ACPI */
	140
	141	extern int acpi_numa;
	142	extern int acpi_scan_nodes(unsigned long start, unsigned long end);
	143	#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
1da177e4 LT	144
	145	#ifdef CONFIG_ACPI_SLEEP
	146
	147	/* routines for saving/restoring kernel state */
	148	extern int acpi_save_state_mem(void);
	149	extern void acpi_restore_state_mem(void);
	150
	151	extern unsigned long acpi_wakeup_address;
	152
	153	/* early initialization routine */
	154	extern void acpi_reserve_bootmem(void);
	155
	156	#endif /CONFIG_ACPI_SLEEP/
	157
1da177e4 LT	158	extern int acpi_disabled;
	159	extern int acpi_pci_disabled;
	160
	161	extern u8 x86_acpiid_to_apicid[];
	162
ffd642e7 DSL	163	#define ARCH_HAS_POWER_INIT 1
ffd642e7 DSL	164
1da177e4 LT	165	extern int acpi_skip_timer_override;
	166
	167	#endif /__KERNEL__/
	168
	169	#endif /_ASM_ACPI_H/