[mirror_ubuntu-bionic-kernel.git] / include / linux / acpi.h

/*
 * acpi.h - ACPI Interface
 *
 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * 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 _LINUX_ACPI_H
#define _LINUX_ACPI_H


#ifdef	CONFIG_ACPI

#ifndef _LINUX
#define _LINUX
#endif

#include <linux/list.h>

#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_numa.h>
#include <asm/acpi.h>


#ifdef CONFIG_ACPI

enum acpi_irq_model_id {
	ACPI_IRQ_MODEL_PIC = 0,
	ACPI_IRQ_MODEL_IOAPIC,
	ACPI_IRQ_MODEL_IOSAPIC,
	ACPI_IRQ_MODEL_PLATFORM,
	ACPI_IRQ_MODEL_COUNT
};

extern enum acpi_irq_model_id	acpi_irq_model;

typedef struct {
	u8			type;
	u8			length;
} __attribute__ ((packed)) acpi_table_entry_header;

enum acpi_interrupt_id {
	ACPI_INTERRUPT_PMI	= 1,
	ACPI_INTERRUPT_INIT,
	ACPI_INTERRUPT_CPEI,
	ACPI_INTERRUPT_COUNT
};

#define	ACPI_SPACE_MEM		0

struct acpi_gen_regaddr {
	u8  space_id;
	u8  bit_width;
	u8  bit_offset;
	u8  resv;
	u32 addrl;
	u32 addrh;
} __attribute__ ((packed));

/*
 * Simple Boot Flags
 * http://www.microsoft.com/whdc/hwdev/resources/specs/simp_bios.mspx
 */
struct acpi_table_sbf
{
	u8 sbf_signature[4];
	u32 sbf_len;
	u8 sbf_revision;
	u8 sbf_csum;
	u8 sbf_oemid[6];
	u8 sbf_oemtable[8];
	u8 sbf_revdata[4];
	u8 sbf_creator[4];
	u8 sbf_crearev[4];
	u8 sbf_cmos;
	u8 sbf_spare[3];
} __attribute__ ((packed));

/*
 * System Resource Affinity Table (SRAT)
 * http://www.microsoft.com/whdc/hwdev/platform/proc/SRAT.mspx
 */

enum acpi_srat_entry_id {
	ACPI_SRAT_PROCESSOR_AFFINITY = 0,
	ACPI_SRAT_MEMORY_AFFINITY,
	ACPI_SRAT_ENTRY_COUNT
};

struct acpi_table_processor_affinity {
	acpi_table_entry_header	header;
	u8			proximity_domain;
	u8			apic_id;
	struct {
		u32			enabled:1;
		u32			reserved:31;
	}			flags;
	u8			lsapic_eid;
	u8			reserved[7];
} __attribute__ ((packed));

struct acpi_table_memory_affinity {
	acpi_table_entry_header	header;
	u8			proximity_domain;
	u8			reserved1[5];
	u32			base_addr_lo;
	u32			base_addr_hi;
	u32			length_lo;
	u32			length_hi;
	u32			memory_type;	/* See acpi_address_range_id */
	struct {
		u32			enabled:1;
		u32			hot_pluggable:1;
		u32			reserved:30;
	}			flags;
	u64			reserved2;
} __attribute__ ((packed));

enum acpi_address_range_id {
	ACPI_ADDRESS_RANGE_MEMORY = 1,
	ACPI_ADDRESS_RANGE_RESERVED = 2,
	ACPI_ADDRESS_RANGE_ACPI = 3,
	ACPI_ADDRESS_RANGE_NVS	= 4,
	ACPI_ADDRESS_RANGE_COUNT
};


/* PCI MMCONFIG */

/* Defined in PCI Firmware Specification 3.0 */
struct acpi_table_mcfg_config {
	u32				base_address;
	u32				base_reserved;
	u16				pci_segment_group_number;
	u8				start_bus_number;
	u8				end_bus_number;
	u8				reserved[4];
} __attribute__ ((packed));

/* Table Handlers */

enum acpi_table_id {
	ACPI_TABLE_UNKNOWN = 0,
	ACPI_APIC,
	ACPI_BOOT,
	ACPI_DBGP,
	ACPI_DSDT,
	ACPI_ECDT,
	ACPI_ETDT,
	ACPI_FADT,
	ACPI_FACS,
	ACPI_OEMX,
	ACPI_PSDT,
	ACPI_SBST,
	ACPI_SLIT,
	ACPI_SPCR,
	ACPI_SRAT,
	ACPI_SSDT,
	ACPI_SPMI,
	ACPI_HPET,
	ACPI_MCFG,
	ACPI_TABLE_COUNT
};

typedef int (*acpi_table_handler) (struct acpi_table_header *header);

extern acpi_table_handler acpi_table_ops[ACPI_TABLE_COUNT];

typedef int (*acpi_madt_entry_handler) (struct acpi_subtable_header *header, const unsigned long end);

char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
unsigned long acpi_find_rsdp (void);
int acpi_boot_init (void);
int acpi_boot_table_init (void);
int acpi_numa_init (void);

int acpi_table_init (void);
int acpi_table_parse (char *id, acpi_table_handler handler);
int acpi_table_parse_madt (enum acpi_madt_type id, acpi_madt_entry_handler handler, unsigned int max_entries);
int acpi_table_parse_srat (enum acpi_srat_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
int acpi_parse_mcfg (struct acpi_table_header *header);
void acpi_table_print (struct acpi_table_header *header, unsigned long phys_addr);
void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
void acpi_table_print_srat_entry (acpi_table_entry_header *srat);

/* the following four functions are architecture-dependent */
#ifdef CONFIG_HAVE_ARCH_PARSE_SRAT
#define NR_NODE_MEMBLKS MAX_NUMNODES
#define acpi_numa_slit_init(slit) do {} while (0)
#define acpi_numa_processor_affinity_init(pa) do {} while (0)
#define acpi_numa_memory_affinity_init(ma) do {} while (0)
#define acpi_numa_arch_fixup() do {} while (0)
#else
void acpi_numa_slit_init (struct acpi_table_slit *slit);
void acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa);
void acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma);
void acpi_numa_arch_fixup(void);
#endif

#ifdef CONFIG_ACPI_HOTPLUG_CPU
/* Arch dependent functions for cpu hotplug support */
int acpi_map_lsapic(acpi_handle handle, int *pcpu);
int acpi_unmap_lsapic(int cpu);
#endif /* CONFIG_ACPI_HOTPLUG_CPU */

int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);

extern int acpi_mp_config;

extern struct acpi_table_mcfg_config *pci_mmcfg_config;
extern int pci_mmcfg_config_num;

extern int sbf_port;
extern unsigned long acpi_video_flags;

#else	/* !CONFIG_ACPI */

#define acpi_mp_config	0

#endif 	/* !CONFIG_ACPI */

int acpi_register_gsi (u32 gsi, int triggering, int polarity);
int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);

/*
 * This function undoes the effect of one call to acpi_register_gsi().
 * If this matches the last registration, any IRQ resources for gsi
 * are freed.
 */
void acpi_unregister_gsi (u32 gsi);

#ifdef CONFIG_ACPI

struct acpi_prt_entry {
	struct list_head	node;
	struct acpi_pci_id	id;
	u8			pin;
	struct {
		acpi_handle		handle;
		u32			index;
	}			link;
	u32			irq;
};

struct acpi_prt_list {
	int			count;
	struct list_head	entries;
};

struct pci_dev;

int acpi_pci_irq_enable (struct pci_dev *dev);
void acpi_penalize_isa_irq(int irq, int active);

void acpi_pci_irq_disable (struct pci_dev *dev);

struct acpi_pci_driver {
	struct acpi_pci_driver *next;
	int (*add)(acpi_handle handle);
	void (*remove)(acpi_handle handle);
};

int acpi_pci_register_driver(struct acpi_pci_driver *driver);
void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);

#endif /* CONFIG_ACPI */

#ifdef CONFIG_ACPI_EC

extern int ec_read(u8 addr, u8 *val);
extern int ec_write(u8 addr, u8 val);
extern int ec_transaction(u8 command,
                          const u8 *wdata, unsigned wdata_len,
                          u8 *rdata, unsigned rdata_len);

#endif /*CONFIG_ACPI_EC*/

extern int acpi_blacklisted(void);
extern void acpi_bios_year(char *s);

#define	ACPI_CSTATE_LIMIT_DEFINED	/* for driver builds */
#ifdef	CONFIG_ACPI

/*
 * Set highest legal C-state
 * 0: C0 okay, but not C1
 * 1: C1 okay, but not C2
 * 2: C2 okay, but not C3 etc.
 */

extern unsigned int max_cstate;

static inline unsigned int acpi_get_cstate_limit(void)
{
	return max_cstate;
}
static inline void acpi_set_cstate_limit(unsigned int new_limit)
{
	max_cstate = new_limit;
	return;
}
#else
static inline unsigned int acpi_get_cstate_limit(void) { return 0; }
static inline void acpi_set_cstate_limit(unsigned int new_limit) { return; }
#endif

#ifdef CONFIG_ACPI_NUMA
int acpi_get_pxm(acpi_handle handle);
int acpi_get_node(acpi_handle *handle);
#else
static inline int acpi_get_pxm(acpi_handle handle)
{
	return 0;
}
static inline int acpi_get_node(acpi_handle *handle)
{
	return 0;
}
#endif
extern int acpi_paddr_to_node(u64 start_addr, u64 size);

extern int pnpacpi_disabled;

#else	/* CONFIG_ACPI */

static inline int acpi_boot_init(void)
{
	return 0;
}

static inline int acpi_boot_table_init(void)
{
	return 0;
}

#endif	/* CONFIG_ACPI */
#endif	/*_LINUX_ACPI_H*/
Commit	Line	Data
1da177e4 LT	1	/*
	2	* acpi.h - ACPI Interface
	3	*
	4	* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
	5	*
	6	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	23	*/
	24
	25	#ifndef _LINUX_ACPI_H
	26	#define _LINUX_ACPI_H
	27
3f5948fa	28
25be5e6c LB	29	#ifdef CONFIG_ACPI
25be5e6c LB	30
1da177e4 LT	31	#ifndef _LINUX
	32	#define _LINUX
	33	#endif
	34
	35	#include <linux/list.h>
	36
	37	#include <acpi/acpi.h>
	38	#include <acpi/acpi_bus.h>
	39	#include <acpi/acpi_drivers.h>
762834e8	40	#include <acpi/acpi_numa.h>
1da177e4 LT	41	#include <asm/acpi.h>
	42
	43
888ba6c6	44	#ifdef CONFIG_ACPI
1da177e4 LT	45
	46	enum acpi_irq_model_id {
	47	ACPI_IRQ_MODEL_PIC = 0,
	48	ACPI_IRQ_MODEL_IOAPIC,
	49	ACPI_IRQ_MODEL_IOSAPIC,
3948ec94	50	ACPI_IRQ_MODEL_PLATFORM,
1da177e4 LT	51	ACPI_IRQ_MODEL_COUNT
	52	};
	53
	54	extern enum acpi_irq_model_id acpi_irq_model;
	55
1da177e4 LT	56	typedef struct {
	57	u8 type;
	58	u8 length;
	59	} __attribute__ ((packed)) acpi_table_entry_header;
	60
1da177e4 LT	61	enum acpi_interrupt_id {
	62	ACPI_INTERRUPT_PMI = 1,
	63	ACPI_INTERRUPT_INIT,
	64	ACPI_INTERRUPT_CPEI,
	65	ACPI_INTERRUPT_COUNT
	66	};
	67
	68	#define ACPI_SPACE_MEM 0
	69
	70	struct acpi_gen_regaddr {
	71	u8 space_id;
	72	u8 bit_width;
	73	u8 bit_offset;
	74	u8 resv;
	75	u32 addrl;
	76	u32 addrh;
	77	} __attribute__ ((packed));
	78
1da177e4 LT	79	/*
	80	* Simple Boot Flags
	81	* http://www.microsoft.com/whdc/hwdev/resources/specs/simp_bios.mspx
	82	*/
	83	struct acpi_table_sbf
	84	{
	85	u8 sbf_signature[4];
	86	u32 sbf_len;
	87	u8 sbf_revision;
	88	u8 sbf_csum;
	89	u8 sbf_oemid[6];
	90	u8 sbf_oemtable[8];
	91	u8 sbf_revdata[4];
	92	u8 sbf_creator[4];
	93	u8 sbf_crearev[4];
	94	u8 sbf_cmos;
	95	u8 sbf_spare[3];
	96	} __attribute__ ((packed));
	97
	98	/*
	99	* System Resource Affinity Table (SRAT)
	100	* http://www.microsoft.com/whdc/hwdev/platform/proc/SRAT.mspx
	101	*/
	102
1da177e4 LT	103	enum acpi_srat_entry_id {
	104	ACPI_SRAT_PROCESSOR_AFFINITY = 0,
	105	ACPI_SRAT_MEMORY_AFFINITY,
	106	ACPI_SRAT_ENTRY_COUNT
	107	};
	108
	109	struct acpi_table_processor_affinity {
	110	acpi_table_entry_header header;
	111	u8 proximity_domain;
	112	u8 apic_id;
	113	struct {
	114	u32 enabled:1;
	115	u32 reserved:31;
	116	} flags;
	117	u8 lsapic_eid;
	118	u8 reserved[7];
	119	} __attribute__ ((packed));
	120
	121	struct acpi_table_memory_affinity {
	122	acpi_table_entry_header header;
	123	u8 proximity_domain;
	124	u8 reserved1[5];
	125	u32 base_addr_lo;
	126	u32 base_addr_hi;
	127	u32 length_lo;
	128	u32 length_hi;
	129	u32 memory_type; /* See acpi_address_range_id */
	130	struct {
	131	u32 enabled:1;
	132	u32 hot_pluggable:1;
	133	u32 reserved:30;
	134	} flags;
	135	u64 reserved2;
	136	} __attribute__ ((packed));
	137
	138	enum acpi_address_range_id {
	139	ACPI_ADDRESS_RANGE_MEMORY = 1,
	140	ACPI_ADDRESS_RANGE_RESERVED = 2,
	141	ACPI_ADDRESS_RANGE_ACPI = 3,
	142	ACPI_ADDRESS_RANGE_NVS = 4,
	143	ACPI_ADDRESS_RANGE_COUNT
	144	};
	145
1da177e4 LT	146
	147	/* PCI MMCONFIG */
	148
54549391 GKH	149	/* Defined in PCI Firmware Specification 3.0 */
	150	struct acpi_table_mcfg_config {
	151	u32 base_address;
	152	u32 base_reserved;
	153	u16 pci_segment_group_number;
	154	u8 start_bus_number;
	155	u8 end_bus_number;
	156	u8 reserved[4];
	157	} __attribute__ ((packed));
1da177e4 LT	158
	159	/* Table Handlers */
	160
	161	enum acpi_table_id {
	162	ACPI_TABLE_UNKNOWN = 0,
	163	ACPI_APIC,
	164	ACPI_BOOT,
	165	ACPI_DBGP,
	166	ACPI_DSDT,
	167	ACPI_ECDT,
	168	ACPI_ETDT,
	169	ACPI_FADT,
	170	ACPI_FACS,
	171	ACPI_OEMX,
	172	ACPI_PSDT,
	173	ACPI_SBST,
	174	ACPI_SLIT,
	175	ACPI_SPCR,
	176	ACPI_SRAT,
	177	ACPI_SSDT,
	178	ACPI_SPMI,
	179	ACPI_HPET,
	180	ACPI_MCFG,
	181	ACPI_TABLE_COUNT
	182	};
	183
ceb6c468	184	typedef int (acpi_table_handler) (struct acpi_table_header header);
1da177e4 LT	185
	186	extern acpi_table_handler acpi_table_ops[ACPI_TABLE_COUNT];
	187
5f3b1a8b	188	typedef int (acpi_madt_entry_handler) (struct acpi_subtable_header header, const unsigned long end);
1da177e4 LT	189
	190	char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
	191	unsigned long acpi_find_rsdp (void);
	192	int acpi_boot_init (void);
	193	int acpi_boot_table_init (void);
	194	int acpi_numa_init (void);
	195
	196	int acpi_table_init (void);
ceb6c468	197	int acpi_table_parse (char *id, acpi_table_handler handler);
5f3b1a8b	198	int acpi_table_parse_madt (enum acpi_madt_type id, acpi_madt_entry_handler handler, unsigned int max_entries);
1da177e4	199	int acpi_table_parse_srat (enum acpi_srat_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
ceb6c468	200	int acpi_parse_mcfg (struct acpi_table_header *header);
1da177e4	201	void acpi_table_print (struct acpi_table_header *header, unsigned long phys_addr);
5f3b1a8b	202	void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
1da177e4 LT	203	void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
	204
	205	/* the following four functions are architecture-dependent */
762834e8 YG	206	#ifdef CONFIG_HAVE_ARCH_PARSE_SRAT
	207	#define NR_NODE_MEMBLKS MAX_NUMNODES
	208	#define acpi_numa_slit_init(slit) do {} while (0)
	209	#define acpi_numa_processor_affinity_init(pa) do {} while (0)
	210	#define acpi_numa_memory_affinity_init(ma) do {} while (0)
	211	#define acpi_numa_arch_fixup() do {} while (0)
	212	#else
1da177e4 LT	213	void acpi_numa_slit_init (struct acpi_table_slit *slit);
	214	void acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa);
	215	void acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma);
	216	void acpi_numa_arch_fixup(void);
762834e8	217	#endif
1da177e4 LT	218
	219	#ifdef CONFIG_ACPI_HOTPLUG_CPU
	220	/* Arch dependent functions for cpu hotplug support */
	221	int acpi_map_lsapic(acpi_handle handle, int *pcpu);
	222	int acpi_unmap_lsapic(int cpu);
	223	#endif /* CONFIG_ACPI_HOTPLUG_CPU */
	224
b1bb248a KK	225	int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
	226	int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
	227
1da177e4 LT	228	extern int acpi_mp_config;
1da177e4 LT	229
54549391 GKH	230	extern struct acpi_table_mcfg_config *pci_mmcfg_config;
54549391 GKH	231	extern int pci_mmcfg_config_num;
1da177e4	232
c255d844 PM	233	extern int sbf_port;
c255d844 PM	234	extern unsigned long acpi_video_flags;
1da177e4	235
888ba6c6	236	#else /* !CONFIG_ACPI */
1da177e4 LT	237
	238	#define acpi_mp_config 0
	239
888ba6c6	240	#endif /* !CONFIG_ACPI */
1da177e4	241
50eca3eb	242	int acpi_register_gsi (u32 gsi, int triggering, int polarity);
1da177e4 LT	243	int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
	244
	245	/*
	246	* This function undoes the effect of one call to acpi_register_gsi().
	247	* If this matches the last registration, any IRQ resources for gsi
	248	* are freed.
	249	*/
1da177e4	250	void acpi_unregister_gsi (u32 gsi);
1da177e4	251
6153df7b	252	#ifdef CONFIG_ACPI
1da177e4 LT	253
	254	struct acpi_prt_entry {
	255	struct list_head node;
	256	struct acpi_pci_id id;
	257	u8 pin;
	258	struct {
	259	acpi_handle handle;
	260	u32 index;
	261	} link;
	262	u32 irq;
	263	};
	264
	265	struct acpi_prt_list {
	266	int count;
	267	struct list_head entries;
	268	};
	269
	270	struct pci_dev;
	271
	272	int acpi_pci_irq_enable (struct pci_dev *dev);
c9c3e457	273	void acpi_penalize_isa_irq(int irq, int active);
1da177e4	274
1da177e4	275	void acpi_pci_irq_disable (struct pci_dev *dev);
1da177e4 LT	276
	277	struct acpi_pci_driver {
	278	struct acpi_pci_driver *next;
	279	int (*add)(acpi_handle handle);
	280	void (*remove)(acpi_handle handle);
	281	};
	282
	283	int acpi_pci_register_driver(struct acpi_pci_driver *driver);
	284	void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
	285
6153df7b	286	#endif /* CONFIG_ACPI */
1da177e4 LT	287
	288	#ifdef CONFIG_ACPI_EC
	289
	290	extern int ec_read(u8 addr, u8 *val);
	291	extern int ec_write(u8 addr, u8 val);
d7a76e4c LP	292	extern int ec_transaction(u8 command,
	293	const u8 *wdata, unsigned wdata_len,
	294	u8 *rdata, unsigned rdata_len);
1da177e4 LT	295
	296	#endif /CONFIG_ACPI_EC/
	297
1da177e4 LT	298	extern int acpi_blacklisted(void);
	299	extern void acpi_bios_year(char *s);
	300
1da177e4 LT	301	#define ACPI_CSTATE_LIMIT_DEFINED /* for driver builds */
	302	#ifdef CONFIG_ACPI
	303
	304	/*
	305	* Set highest legal C-state
	306	* 0: C0 okay, but not C1
	307	* 1: C1 okay, but not C2
	308	* 2: C2 okay, but not C3 etc.
	309	*/
	310
	311	extern unsigned int max_cstate;
	312
	313	static inline unsigned int acpi_get_cstate_limit(void)
	314	{
	315	return max_cstate;
	316	}
	317	static inline void acpi_set_cstate_limit(unsigned int new_limit)
	318	{
	319	max_cstate = new_limit;
	320	return;
	321	}
	322	#else
	323	static inline unsigned int acpi_get_cstate_limit(void) { return 0; }
	324	static inline void acpi_set_cstate_limit(unsigned int new_limit) { return; }
	325	#endif
	326
	327	#ifdef CONFIG_ACPI_NUMA
	328	int acpi_get_pxm(acpi_handle handle);
1e3590e2	329	int acpi_get_node(acpi_handle *handle);
1da177e4 LT	330	#else
	331	static inline int acpi_get_pxm(acpi_handle handle)
	332	{
	333	return 0;
	334	}
1e3590e2 YG	335	static inline int acpi_get_node(acpi_handle *handle)
	336	{
	337	return 0;
	338	}
1da177e4	339	#endif
1e3590e2	340	extern int acpi_paddr_to_node(u64 start_addr, u64 size);
1da177e4 LT	341
	342	extern int pnpacpi_disabled;
	343
53de49f5 AM	344	#else /* CONFIG_ACPI */
	345
	346	static inline int acpi_boot_init(void)
	347	{
	348	return 0;
	349	}
	350
	351	static inline int acpi_boot_table_init(void)
	352	{
	353	return 0;
	354	}
	355
25be5e6c LB	356	#endif /* CONFIG_ACPI */
25be5e6c LB	357	#endif /_LINUX_ACPI_H/