[mirror_ubuntu-artful-kernel.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__

#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))

/*
 * Refer Intel ACPI _PDC support document for bit definitions
 */
#define ACPI_PDC_EST_CAPABILITY_SMP 	0xa
#define ACPI_PDC_EST_CAPABILITY_MSR	0x1

#ifdef CONFIG_ACPI_BOOT
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);

#else	/* !CONFIG_ACPI_BOOT */
#define acpi_lapic 0
#define acpi_ioapic 0
#endif /* !CONFIG_ACPI_BOOT */

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_PCI
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
static inline void acpi_noirq_set(void) { }
static inline void acpi_disable_pci(void) { }
static inline int acpi_irq_balance_set(char *str) { return 0; }
#endif

#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[];

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
	31	#define COMPILER_DEPENDENT_INT64 long long
	32	#define COMPILER_DEPENDENT_UINT64 unsigned long long
	33
	34	/*
	35	* Calling conventions:
	36	*
	37	* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
	38	* ACPI_EXTERNAL_XFACE - External ACPI interfaces
	39	* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
	40	* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
	41	*/
	42	#define ACPI_SYSTEM_XFACE
	43	#define ACPI_EXTERNAL_XFACE
	44	#define ACPI_INTERNAL_XFACE
	45	#define ACPI_INTERNAL_VAR_XFACE
	46
	47	/* Asm macros */
	48
	49	#define ACPI_ASM_MACROS
	50	#define BREAKPOINT3
	51	#define ACPI_DISABLE_IRQS() local_irq_disable()
	52	#define ACPI_ENABLE_IRQS() local_irq_enable()
	53	#define ACPI_FLUSH_CPU_CACHE() wbinvd()
	54
	55
	56	static inline int
	57	__acpi_acquire_global_lock (unsigned int *lock)
	58	{
	59	unsigned int old, new, val;
	60	do {
	61	old = *lock;
	62	new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
	63	val = cmpxchg(lock, old, new);
	64	} while (unlikely (val != old));
65	return (new < 3) ? -1 : 0;
66	}
67
68	static inline int
69	__acpi_release_global_lock (unsigned int *lock)
70	{
71	unsigned int old, new, val;
72	do {
73	old = *lock;
74	new = old & ~0x3;
75	val = cmpxchg(lock, old, new);
76	} while (unlikely (val != old));
77	return old & 0x1;
78	}
79
80	#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
81	((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
82
83	#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
84	((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
85
86	/*
87	* Math helper asm macros
88	*/
89	#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
90	asm("divl %2;" \
91	:"=a"(q32), "=d"(r32) \
92	:"r"(d32), \
93	"0"(n_lo), "1"(n_hi))
94
95
96	#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
97	asm("shrl $1,%2;" \
98	"rcrl $1,%3;" \
99	:"=r"(n_hi), "=r"(n_lo) \
100	:"0"(n_hi), "1"(n_lo))
101
102	/*
103	* Refer Intel ACPI _PDC support document for bit definitions
104	*/
105	#define ACPI_PDC_EST_CAPABILITY_SMP 0xa
106	#define ACPI_PDC_EST_CAPABILITY_MSR 0x1
107
108	#ifdef CONFIG_ACPI_BOOT
109	extern int acpi_lapic;
110	extern int acpi_ioapic;
111	extern int acpi_noirq;
112	extern int acpi_strict;
113	extern int acpi_disabled;
114	extern int acpi_pci_disabled;
115	extern int acpi_ht;
116	static inline void disable_acpi(void)
117	{
118	acpi_disabled = 1;
119	acpi_ht = 0;
120	acpi_pci_disabled = 1;
121	acpi_noirq = 1;
122	}
123
124	/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
125	#define FIX_ACPI_PAGES 4
126
127	extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
128
129	#else /* !CONFIG_ACPI_BOOT */
130	#define acpi_lapic 0
131	#define acpi_ioapic 0
132	#endif /* !CONFIG_ACPI_BOOT */
133
134	extern int acpi_numa;
135	extern int acpi_scan_nodes(unsigned long start, unsigned long end);
136	#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
137
138	#ifdef CONFIG_ACPI_PCI
139	static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
140	static inline void acpi_disable_pci(void)
141	{
142	acpi_pci_disabled = 1;
143	acpi_noirq_set();
144	}
145	extern int acpi_irq_balance_set(char *str);
146	#else
147	static inline void acpi_noirq_set(void) { }
148	static inline void acpi_disable_pci(void) { }
149	static inline int acpi_irq_balance_set(char *str) { return 0; }
150	#endif
151
152	#ifdef CONFIG_ACPI_SLEEP
153
154	/* routines for saving/restoring kernel state */
155	extern int acpi_save_state_mem(void);
156	extern void acpi_restore_state_mem(void);
157
158	extern unsigned long acpi_wakeup_address;
159
160	/* early initialization routine */
161	extern void acpi_reserve_bootmem(void);
162
163	#endif /CONFIG_ACPI_SLEEP/
164
165	#define boot_cpu_physical_apicid boot_cpu_id
166
167	extern int acpi_disabled;
168	extern int acpi_pci_disabled;
169
170	extern u8 x86_acpiid_to_apicid[];
171
172	extern int acpi_skip_timer_override;
173
174	#endif /__KERNEL__/
175
176	#endif /_ASM_ACPI_H/