ACPI data structures. More...

#include <stdint.h>
#include <byteswap.h>
#include <ipxe/refcnt.h>
#include <ipxe/list.h>
#include <ipxe/interface.h>
#include <ipxe/tables.h>
#include <ipxe/api.h>
#include <config/general.h>
#include <ipxe/null_acpi.h>
#include <ipxe/efi/efi_acpi.h>
#include <ipxe/linux/linux_acpi.h>
#include <bits/acpi.h>

Data Structures
struct	acpi_address
	An ACPI generic address structure. More...
struct	acpi_small_resource
	An ACPI small resource descriptor header. More...
struct	acpi_end_resource
	An ACPI end resource descriptor. More...
struct	acpi_large_resource
	An ACPI large resource descriptor header. More...
struct	acpi_qword_address_space_resource
	An ACPI QWORD address space resource descriptor. More...
union	acpi_resource
	An ACPI resource descriptor. More...
struct	acpi_header
	An ACPI description header. More...
struct	acpi_rsdp
	Root System Description Pointer. More...
struct	acpi_rsdt
	ACPI Root System Description Table (RSDT) More...
struct	acpi_fadt
	Fixed ACPI Description Table (FADT) More...
struct	acpi_descriptor
	An ACPI descriptor (used to construct ACPI tables) More...
struct	acpi_model
	An ACPI table model. More...

Macros
#define	ACPI_ADDRESS_TYPE_MEM 0x00
	A memory address space type.
#define	ACPI_ADDRESS_TYPE_IO 0x01
	An I/O address space type.
#define	ACPI_ADDRESS_TYPE_BUS 0x02
	A bus number address space type.
#define	ACPI_SMALL_LEN_MASK 0x03
	ACPI small resource length mask.
#define	ACPI_END_RESOURCE 0x78
	An ACPI end resource descriptor.
#define	ACPI_LARGE 0x80
	ACPI large resource flag.
#define	ACPI_QWORD_ADDRESS_SPACE_RESOURCE 0x8a
	An ACPI QWORD address space resource descriptor.
#define	ACPI_SIGNATURE(a, b, c, d)
	Build ACPI signature.
#define	RSDP_SIGNATURE { 'R', 'S', 'D', ' ', 'P', 'T', 'R', ' ' }
	Root System Description Pointer signature.
#define	RSDT_SIGNATURE ACPI_SIGNATURE ( 'R', 'S', 'D', 'T' )
	Root System Description Table (RSDT) signature.
#define	FADT_SIGNATURE ACPI_SIGNATURE ( 'F', 'A', 'C', 'P' )
	Fixed ACPI Description Table (FADT) signature.
#define	ACPI_PM1_CNT 0
	ACPI PM1 Control Register (within PM1a_CNT_BLK or PM1A_CNT_BLK)
#define	ACPI_PM1_CNT_SLP_TYP(x)
	Sleep type.
#define	ACPI_PM1_CNT_SLP_EN ( 1 << 13 )
	Sleep enable.
#define	ACPI_PM_TMR 0
	ACPI PM Timer Register (within PM_TMR_BLK)
#define	DSDT_SIGNATURE ACPI_SIGNATURE ( 'D', 'S', 'D', 'T' )
	Differentiated System Description Table (DSDT) signature.
#define	SSDT_SIGNATURE ACPI_SIGNATURE ( 'S', 'S', 'D', 'T' )
	Secondary System Description Table (SSDT) signature.
#define	ACPI_MODELS __table ( struct acpi_model, "acpi_models" )
	ACPI models.
#define	__acpi_model __table_entry ( ACPI_MODELS, 01 )
	Declare an ACPI model.
#define	ACPI_INLINE(_subsys, _api_func)
	Calculate static inline ACPI API function name.
#define	PROVIDE_ACPI(_subsys, _api_func, _func)
	Provide an ACPI API implementation.
#define	PROVIDE_ACPI_INLINE(_subsys, _api_func)
	Provide a static inline ACPI API implementation.
#define	acpi_describe_TYPE(object_type)

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
static unsigned int	acpi_resource_tag (union acpi_resource *res)
	Get ACPI resource tag.
static size_t	acpi_small_len (struct acpi_small_resource *res)
	Get length of ACPI small resource descriptor.
static size_t	acpi_large_len (struct acpi_large_resource *res)
	Get length of ACPI large resource descriptor.
static size_t	acpi_resource_len (union acpi_resource *res)
	Get length of ACPI resource descriptor.
static union acpi_resource *	acpi_resource_next (union acpi_resource *res)
	Get next ACPI resource descriptor.
static const char *	acpi_name (uint32_t signature)
	Transcribe ACPI table signature (for debugging)
static void	acpi_init (struct acpi_descriptor desc, struct acpi_model model, struct refcnt *refcnt)
	Initialise ACPI descriptor.
const struct acpi_header *	acpi_find_via_rsdt (uint32_t signature, unsigned int index)
	Locate ACPI table via RSDT.
const struct acpi_rsdt *	acpi_find_rsdt (void)
	Locate ACPI root system description table.
const struct acpi_header *	acpi_find (uint32_t signature, unsigned int index)
	Locate ACPI table.
struct acpi_descriptor *	acpi_describe (struct interface *interface)
	Get object's ACPI descriptor.
void	acpi_fix_checksum (struct acpi_header *acpi)
	Fix up ACPI table checksum.
const struct acpi_header *	acpi_table (uint32_t signature, unsigned int index)
	Locate ACPI table.
int	acpi_extract (uint32_t signature, void data, int(extract)(const struct acpi_header zsdt, size_t len, size_t offset, void data))
	Extract value from DSDT/SSDT.
void *	acpi_ioremap (struct acpi_address *address, size_t len)
	Map an ACPI generic address.
void	acpi_add (struct acpi_descriptor *desc)
	Add ACPI descriptor.
void	acpi_del (struct acpi_descriptor *desc)
	Remove ACPI descriptor.
int	acpi_install (int(install)(struct acpi_header acpi))
	Install ACPI tables.

Variables
const struct acpi_header (	acpi_finder )(uint32_t signature, unsigned int index)

Detailed Description

ACPI data structures.

Definition in file acpi.h.

Macro Definition Documentation

◆ ACPI_ADDRESS_TYPE_MEM

#define ACPI_ADDRESS_TYPE_MEM 0x00

A memory address space type.

Definition at line 37 of file acpi.h.

Referenced by acpi_ioremap(), and efipci_ioremap().

◆ ACPI_ADDRESS_TYPE_IO

#define ACPI_ADDRESS_TYPE_IO 0x01

An I/O address space type.

Definition at line 40 of file acpi.h.

Referenced by acpi_ioremap().

◆ ACPI_ADDRESS_TYPE_BUS

#define ACPI_ADDRESS_TYPE_BUS 0x02

A bus number address space type.

Definition at line 43 of file acpi.h.

Referenced by efipci_discover_one().

◆ ACPI_SMALL_LEN_MASK

#define ACPI_SMALL_LEN_MASK 0x03

ACPI small resource length mask.

Definition at line 52 of file acpi.h.

Referenced by acpi_resource_tag(), and acpi_small_len().

◆ ACPI_END_RESOURCE

#define ACPI_END_RESOURCE 0x78

An ACPI end resource descriptor.

Definition at line 55 of file acpi.h.

Referenced by efipci_discover_one(), and efipci_ioremap().

◆ ACPI_LARGE

#define ACPI_LARGE 0x80

ACPI large resource flag.

Definition at line 74 of file acpi.h.

Referenced by acpi_resource_len(), and acpi_resource_tag().

◆ ACPI_QWORD_ADDRESS_SPACE_RESOURCE

#define ACPI_QWORD_ADDRESS_SPACE_RESOURCE 0x8a

An ACPI QWORD address space resource descriptor.

Definition at line 77 of file acpi.h.

Referenced by efipci_discover_one(), and efipci_ioremap().

◆ ACPI_SIGNATURE

#define ACPI_SIGNATURE	(	a,
		b,
		c,
		d )

Value:

( ( (a) << 0 ) | ( (b) << 8 ) | ( (c) << 16 ) | ( (d) << 24 ) )

Build ACPI signature.

Parameters

a	First character of ACPI signature
b	Second character of ACPI signature
c	Third character of ACPI signature
d	Fourth character of ACPI signature

Return values

signature ACPI signature

Definition at line 226 of file acpi.h.

226#define ACPI_SIGNATURE( a, b, c, d ) \

227 ( ( (a) << 0 ) | ( (b) << 8 ) | ( (c) << 16 ) | ( (d) << 24 ) )

◆ RSDP_SIGNATURE

#define RSDP_SIGNATURE { 'R', 'S', 'D', ' ', 'P', 'T', 'R', ' ' }

Root System Description Pointer signature.

Definition at line 230 of file acpi.h.

Referenced by rsdp_find_rsdt_range().

◆ RSDT_SIGNATURE

#define RSDT_SIGNATURE ACPI_SIGNATURE ( 'R', 'S', 'D', 'T' )

Root System Description Table (RSDT) signature.

Definition at line 247 of file acpi.h.

Referenced by acpi_find_via_rsdt().

◆ FADT_SIGNATURE

#define FADT_SIGNATURE ACPI_SIGNATURE ( 'F', 'A', 'C', 'P' )

Fixed ACPI Description Table (FADT) signature.

Definition at line 258 of file acpi.h.

Referenced by acpi_extract(), acpi_poweroff(), and acpi_timer_probe().

◆ ACPI_PM1_CNT

#define ACPI_PM1_CNT 0

ACPI PM1 Control Register (within PM1a_CNT_BLK or PM1A_CNT_BLK)

Definition at line 281 of file acpi.h.

Referenced by acpi_poweroff().

◆ ACPI_PM1_CNT_SLP_TYP

#define ACPI_PM1_CNT_SLP_TYP ( x )

Value:

( (x) << 10 )

x

static unsigned int x

Definition pixbuf.h:63

Sleep type.

Definition at line 282 of file acpi.h.

Referenced by acpi_poweroff().

◆ ACPI_PM1_CNT_SLP_EN

#define ACPI_PM1_CNT_SLP_EN ( 1 << 13 )

Sleep enable.

Definition at line 283 of file acpi.h.

Referenced by acpi_poweroff().

◆ ACPI_PM_TMR

#define ACPI_PM_TMR 0

ACPI PM Timer Register (within PM_TMR_BLK)

Definition at line 286 of file acpi.h.

Referenced by acpi_timer_probe().

◆ DSDT_SIGNATURE

#define DSDT_SIGNATURE ACPI_SIGNATURE ( 'D', 'S', 'D', 'T' )

Differentiated System Description Table (DSDT) signature.

Definition at line 289 of file acpi.h.

◆ SSDT_SIGNATURE

#define SSDT_SIGNATURE ACPI_SIGNATURE ( 'S', 'S', 'D', 'T' )

Secondary System Description Table (SSDT) signature.

Definition at line 292 of file acpi.h.

Referenced by acpi_extract().

◆ ACPI_MODELS

#define ACPI_MODELS __table ( struct acpi_model, "acpi_models" )

ACPI models.

Definition at line 341 of file acpi.h.

Referenced by acpi_install().

◆ __acpi_model

struct acpi_model ib_sbft_model __acpi_model __table_entry ( ACPI_MODELS, 01 )

Declare an ACPI model.

IB sBFT model.

aBFT model

Definition at line 344 of file acpi.h.

◆ ACPI_INLINE

#define ACPI_INLINE	(		_subsys,
			_api_func )

Value:

SINGLE_API_INLINE ( ACPI_PREFIX_ ## _subsys, _api_func )

SINGLE_API_INLINE

#define SINGLE_API_INLINE(_prefix, _api_func)

Calculate static inline function name.

Definition api.h:45

Calculate static inline ACPI API function name.

Parameters

_prefix	Subsystem prefix
_api_func	API function

Return values

_subsys_func Subsystem API function

Definition at line 353 of file acpi.h.

353#define ACPI_INLINE( _subsys, _api_func ) \

354 SINGLE_API_INLINE ( ACPI_PREFIX_ ## _subsys, _api_func )

◆ PROVIDE_ACPI

#define PROVIDE_ACPI	(	_subsys,
		_api_func,
		_func )

Value:

PROVIDE_SINGLE_API ( ACPI_PREFIX_ ## _subsys, _api_func, _func )

PROVIDE_SINGLE_API

#define PROVIDE_SINGLE_API(_prefix, _api_func, _func)

Provide an API implementation.

Definition api.h:55

Provide an ACPI API implementation.

Parameters

_prefix	Subsystem prefix
_api_func	API function
_func	Implementing function

Definition at line 363 of file acpi.h.

363#define PROVIDE_ACPI( _subsys, _api_func, _func ) \

364 PROVIDE_SINGLE_API ( ACPI_PREFIX_ ## _subsys, _api_func, _func )

◆ PROVIDE_ACPI_INLINE

#define PROVIDE_ACPI_INLINE	(		_subsys,
			_api_func )

Value:

PROVIDE_SINGLE_API_INLINE ( ACPI_PREFIX_ ## _subsys, _api_func )

PROVIDE_SINGLE_API_INLINE

#define PROVIDE_SINGLE_API_INLINE(_prefix, _api_func)

Provide a static inline API implementation.

Definition api.h:74

Provide a static inline ACPI API implementation.

Parameters

_prefix	Subsystem prefix
_api_func	API function

Definition at line 372 of file acpi.h.

372#define PROVIDE_ACPI_INLINE( _subsys, _api_func ) \

373 PROVIDE_SINGLE_API_INLINE ( ACPI_PREFIX_ ## _subsys, _api_func )

◆ acpi_describe_TYPE

#define acpi_describe_TYPE ( object_type )

Value:

typeof ( struct acpi_descriptor * ( object_type ) )

typeof

typeof(acpi_finder=acpi_find)

ACPI table finder.

Definition acpi.c:48

acpi_descriptor

An ACPI descriptor (used to construct ACPI tables)

Definition acpi.h:295

Definition at line 405 of file acpi.h.

405#define acpi_describe_TYPE( object_type ) \

406 typeof ( struct acpi_descriptor * ( object_type ) )

Referenced by acpi_describe().

Function Documentation

◆ FILE_LICENCE()

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )

◆ FILE_SECBOOT()

FILE_SECBOOT ( PERMITTED )

◆ acpi_resource_tag()

unsigned int acpi_resource_tag ( union acpi_resource * res )

inlinestatic

Get ACPI resource tag.

Parameters

res	ACPI resource descriptor

Return values

tag	Resource tag

Definition at line 121 of file acpi.h.

                                                                          {
 
        return ( ( res->tag & ACPI_LARGE ) ?
                 res->tag : ( res->tag & ~ACPI_SMALL_LEN_MASK ) );
}

References ACPI_LARGE, ACPI_SMALL_LEN_MASK, and acpi_resource::tag.

Referenced by efipci_discover_one(), and efipci_ioremap().

◆ acpi_small_len()

size_t acpi_small_len ( struct acpi_small_resource * res )

inlinestatic

Get length of ACPI small resource descriptor.

Parameters

res	Small resource descriptor

Return values

len	Length of descriptor

Definition at line 133 of file acpi.h.

                                                                        {
 
        return ( sizeof ( *res ) + ( res->tag & ACPI_SMALL_LEN_MASK ) );
}

References ACPI_SMALL_LEN_MASK, and acpi_small_resource::tag.

Referenced by acpi_resource_len().

◆ acpi_large_len()

size_t acpi_large_len ( struct acpi_large_resource * res )

inlinestatic

Get length of ACPI large resource descriptor.

Parameters

res	Large resource descriptor

Return values

len	Length of descriptor

Definition at line 144 of file acpi.h.

                                                                        {
 
        return ( sizeof ( *res ) + le16_to_cpu ( res->len ) );
}

References le16_to_cpu, and acpi_large_resource::len.

Referenced by acpi_resource_len().

◆ acpi_resource_len()

size_t acpi_resource_len ( union acpi_resource * res )

inlinestatic

Get length of ACPI resource descriptor.

Parameters

res	ACPI resource descriptor

Return values

len	Length of descriptor

Definition at line 155 of file acpi.h.

                                                                    {
 
        return ( ( res->tag & ACPI_LARGE ) ?
                 acpi_large_len ( &res->large ) :
                 acpi_small_len ( &res->small ) );
}

References ACPI_LARGE, acpi_large_len(), acpi_small_len(), acpi_resource::large, acpi_resource::small, and acpi_resource::tag.

Referenced by acpi_resource_next().

◆ acpi_resource_next()

union acpi_resource * acpi_resource_next ( union acpi_resource * res )

static

Get next ACPI resource descriptor.

Parameters

res	ACPI resource descriptor

Return values

next	Next ACPI resource descriptor

Definition at line 169 of file acpi.h.

                                                {
 
        return ( ( ( void * ) res ) + acpi_resource_len ( res ) );
}

References acpi_resource_len().

Referenced by efipci_discover_one(), and efipci_ioremap().

◆ acpi_name()

const char * acpi_name ( uint32_t signature )

inlinestatic

Transcribe ACPI table signature (for debugging)

Parameters

signature ACPI table signature

Return values

name	ACPI table signature name

Definition at line 207 of file acpi.h.

                                                            {
        static union {
                uint32_t signature;
                char name[5];
        } u;
 
        u.signature = cpu_to_le32 ( signature );
        return u.name;
}

References cpu_to_le32, name, signature, and u.

Referenced by acpi_extract(), acpi_find_via_rsdt(), acpi_settings_fetch(), acpi_zsdt(), dummy_install(), efi_block_install(), and int13_install().

◆ acpi_init()

void acpi_init	(	struct acpi_descriptor *	desc,
		struct acpi_model *	model,
		struct refcnt *	refcnt )

inlinestatic

Initialise ACPI descriptor.

Parameters

desc	ACPI descriptor
model	Table model
refcnt	Reference count

Definition at line 312 of file acpi.h.

                                    {
 
        desc->refcnt = refcnt;
        desc->model = model;
        INIT_LIST_HEAD ( &desc->list );
}

References desc, and INIT_LIST_HEAD.

Referenced by aoedev_open(), ib_srp_open(), and iscsi_open().

◆ acpi_find_via_rsdt()

const struct acpi_header * acpi_find_via_rsdt	(	uint32_t	signature,
		unsigned int	index )

extern

Locate ACPI table via RSDT.

Parameters

signature	Requested table signature
index	Requested index of table with this signature

Return values

table Table, or NULL if not found

Definition at line 106 of file acpi.c.

                                                                     {
        const struct acpi_rsdt *rsdt;
        const struct acpi_header *table;
        size_t len;
        unsigned int count;
        unsigned int i;
 
        /* Locate RSDT */
        rsdt = acpi_find_rsdt();
        if ( ! rsdt ) {
                DBG ( "RSDT not found\n" );
                return NULL;
        }
 
        /* Read RSDT header */
        if ( rsdt->acpi.signature != cpu_to_le32 ( RSDT_SIGNATURE ) ) {
                DBGC ( colour, "RSDT %#08lx has invalid signature:\n",
                       virt_to_phys ( rsdt ) );
                DBGC_HDA ( colour, virt_to_phys ( rsdt ), &rsdt->acpi,
                           sizeof ( rsdt->acpi ) );
                return NULL;
        }
        len = le32_to_cpu ( rsdt->acpi.length );
        if ( len < sizeof ( rsdt->acpi ) ) {
                DBGC ( colour, "RSDT %#08lx has invalid length:\n",
                       virt_to_phys ( rsdt ) );
                DBGC_HDA ( colour, virt_to_phys ( rsdt ), &rsdt->acpi,
                           sizeof ( rsdt->acpi ) );
                return NULL;
        }
 
        /* Calculate number of entries */
        count = ( ( len - sizeof ( rsdt->acpi ) ) /
                  sizeof ( rsdt->entry[0] ) );
 
        /* Search through entries */
        for ( i = 0 ; i < count ; i++ ) {
 
                /* Read table header */
                table = phys_to_virt ( rsdt->entry[i] );
 
                /* Check table signature */
                if ( table->signature != cpu_to_le32 ( signature ) )
                        continue;
 
                /* Check index */
                if ( index-- )
                        continue;
 
                /* Check table integrity */
                if ( acpi_checksum ( table ) != 0 ) {
                        DBGC ( colour, "RSDT %#08lx found %s with bad "
                               "checksum at %#08lx\n", virt_to_phys ( rsdt ),
                               acpi_name ( signature ),
                               virt_to_phys ( table ) );
                        break;
                }
 
                DBGC ( colour, "RSDT %#08lx found %s at %#08lx\n",
                       virt_to_phys ( rsdt ), acpi_name ( signature ),
                       virt_to_phys ( table ) );
                return table;
        }
 
        DBGC ( colour, "RSDT %#08lx could not find %s\n",
               virt_to_phys ( rsdt ), acpi_name ( signature ) );
        return NULL;
}

References acpi_rsdt::acpi, acpi_find_rsdt(), acpi_name(), colour, count, cpu_to_le32, DBG, DBGC, DBGC_HDA, acpi_rsdt::entry, index, le32_to_cpu, len, acpi_header::length, NULL, RSDT_SIGNATURE, acpi_header::signature, and signature.

Referenced by acpi_find().

◆ acpi_find_rsdt()

const struct acpi_rsdt * acpi_find_rsdt ( void )

Locate ACPI root system description table.

Return values

rsdt	ACPI root system description table, or NULL

References index, and signature.

Referenced by acpi_find_via_rsdt(), PROVIDE_ACPI(), and PROVIDE_ACPI().

◆ acpi_find()

const struct acpi_header * acpi_find	(	uint32_t	signature,
		unsigned int	index )

Locate ACPI table.

Parameters

signature	Requested table signature
index	Requested index of table with this signature

Return values

table Table, or NULL if not found

Definition at line 27 of file rsdp.h.

                                                                           {
 
        return acpi_find_via_rsdt ( signature, index );
}

References acpi_find(), acpi_find_via_rsdt(), index, rsdp, and signature.

Referenced by acpi_find(), acpi_find(), PROVIDE_ACPI_INLINE(), PROVIDE_ACPI_INLINE(), PROVIDE_ACPI_INLINE(), typeof(), and typeof().

◆ acpi_describe()

struct acpi_descriptor * acpi_describe ( struct interface * intf )

extern

Get object's ACPI descriptor.

Parameters

intf Interface

Return values

desc	ACPI descriptor, or NULL

Definition at line 321 of file acpi.c.

                                                                  {
        struct interface *dest;
        acpi_describe_TYPE ( void * ) *op =
                intf_get_dest_op ( intf, acpi_describe, &dest );
        void *object = intf_object ( dest );
        struct acpi_descriptor *desc;
 
        if ( op ) {
                desc = op ( object );
        } else {
                desc = NULL;
        }
 
        intf_put ( dest );
        return desc;
}

References acpi_describe(), acpi_describe_TYPE, desc, dest, interface::intf, intf_get_dest_op, intf_object(), intf_put(), NULL, and op.

Referenced by acpi_describe(), and sanpath_open().

◆ acpi_fix_checksum()

void acpi_fix_checksum ( struct acpi_header * acpi )

extern

Fix up ACPI table checksum.

Parameters

acpi	ACPI table header

Definition at line 80 of file acpi.c.

                                                    {
 
        /* Update checksum */
        acpi->checksum -= acpi_checksum ( acpi );
}

References acpi.

Referenced by efi_block_install(), and int13_install().

◆ acpi_table()

const struct acpi_header * acpi_table	(	uint32_t	signature,
		unsigned int	index )

extern

Locate ACPI table.

Parameters

signature	Requested table signature
index	Requested index of table with this signature

Return values

table Table, or NULL if not found

Definition at line 93 of file acpi.c.

                                                             {
 
        return ( *acpi_finder ) ( signature, index );
}

References acpi_finder, index, and signature.

Referenced by acpi_extract(), acpi_poweroff(), acpi_settings_fetch(), acpi_timer_probe(), ecam_find(), and spcr_console().

◆ acpi_extract()

int acpi_extract	(	uint32_t	signature,
		void *	data,
		int(*	extract )(const struct acpi_header zsdt, size_t len, size_t offset, void data) )

extern

Extract value from DSDT/SSDT.

Parameters

signature	Signature (e.g. "_S5_")
data	Data buffer
extract	Extraction method

Return values

rc	Return status code

Definition at line 228 of file acpi.c.

                                                      {
        const struct acpi_fadt *fadt;
        const struct acpi_header *dsdt;
        const struct acpi_header *ssdt;
        unsigned int i;
        int rc;
 
        /* Try DSDT first */
        fadt = container_of ( acpi_table ( FADT_SIGNATURE, 0 ),
                              struct acpi_fadt, acpi );
        if ( fadt ) {
                dsdt = phys_to_virt ( fadt->dsdt );
                if ( ( rc = acpi_zsdt ( dsdt, signature, data,
                                        extract ) ) == 0 )
                        return 0;
        }
 
        /* Try all SSDTs */
        for ( i = 0 ; ; i++ ) {
                ssdt = acpi_table ( SSDT_SIGNATURE, i );
                if ( ! ssdt )
                        break;
                if ( ( rc = acpi_zsdt ( ssdt, signature, data,
                                        extract ) ) == 0 )
                        return 0;
        }
 
        DBGC ( colour, "ACPI could not find \"%s\"\n",
               acpi_name ( signature ) );
        return -ENOENT;
}

References acpi, acpi_name(), acpi_table(), acpi_zsdt(), colour, container_of, data, DBGC, acpi_fadt::dsdt, ENOENT, FADT_SIGNATURE, len, offset, rc, signature, and SSDT_SIGNATURE.

Referenced by acpi_mac(), and acpi_poweroff().

◆ acpi_ioremap()

void * acpi_ioremap	(	struct acpi_address *	address,
		size_t	len )

extern

Map an ACPI generic address.

Parameters

address	Generic address
len	Length of region

Return values

io_addr I/O address, or NULL on error

Definition at line 270 of file acpi.c.

                                                                 {
        physaddr_t base = le64_to_cpu ( address->address );
 
        switch ( address->type ) {
        case ACPI_ADDRESS_TYPE_MEM:
                return ioremap ( base, len );
        case ACPI_ADDRESS_TYPE_IO:
                return ( ( void * ) base );
        default:
                return NULL;
        }
}

References ACPI_ADDRESS_TYPE_IO, ACPI_ADDRESS_TYPE_MEM, address, base, ioremap(), le64_to_cpu, len, and NULL.

Referenced by spcr_16550().

◆ acpi_add()

void acpi_add ( struct acpi_descriptor * desc )

extern

Add ACPI descriptor.

Parameters

desc	ACPI descriptor

Definition at line 295 of file acpi.c.

                                               {
 
        /* Add to list of descriptors */
        ref_get ( desc->refcnt );
        list_add_tail ( &desc->list, &desc->model->descs );
}

References desc, list_add_tail, and ref_get.

Referenced by sanpath_open().

◆ acpi_del()

void acpi_del ( struct acpi_descriptor * desc )

extern

Remove ACPI descriptor.

Parameters

desc	ACPI descriptor

Definition at line 307 of file acpi.c.

                                               {
 
        /* Remove from list of descriptors */
        list_check_contains_entry ( desc, &desc->model->descs, list );
        list_del ( &desc->list );
        ref_put ( desc->refcnt );
}

References desc, list_check_contains_entry, list_del, and ref_put.

Referenced by sandev_undescribe(), and sanpath_open().

◆ acpi_install()

int acpi_install ( int(* install )(struct acpi_header *acpi) )

extern

Install ACPI tables.

Parameters

install Table installation method

Return values

rc	Return status code

Definition at line 344 of file acpi.c.

                                                                   {
        struct acpi_model *model;
        int rc;
 
        for_each_table_entry ( model, ACPI_MODELS ) {
                if ( ( rc = model->install ( install ) ) != 0 )
                        return rc;
        }
 
        return 0;
}

References acpi, ACPI_MODELS, for_each_table_entry, acpi_model::install, and rc.

Referenced by dummy_san_describe(), efi_block_describe(), and int13_describe().

Variable Documentation

◆ acpi_finder

const struct acpi_header ( acpi_finder) (uint32_t signature, unsigned int index)	(	uint32_t	signature,
		unsigned int	index )

extern

Referenced by acpi_table(), typeof(), and typeof().

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ ACPI_ADDRESS_TYPE_MEM

◆ ACPI_ADDRESS_TYPE_IO

◆ ACPI_ADDRESS_TYPE_BUS

◆ ACPI_SMALL_LEN_MASK

◆ ACPI_END_RESOURCE

◆ ACPI_LARGE

◆ ACPI_QWORD_ADDRESS_SPACE_RESOURCE

◆ ACPI_SIGNATURE

◆ RSDP_SIGNATURE

◆ RSDT_SIGNATURE

◆ FADT_SIGNATURE

◆ ACPI_PM1_CNT

◆ ACPI_PM1_CNT_SLP_TYP

◆ ACPI_PM1_CNT_SLP_EN

◆ ACPI_PM_TMR

◆ DSDT_SIGNATURE

◆ SSDT_SIGNATURE

◆ ACPI_MODELS

◆ __acpi_model

◆ ACPI_INLINE

◆ PROVIDE_ACPI

◆ PROVIDE_ACPI_INLINE

◆ acpi_describe_TYPE

Function Documentation

◆ FILE_LICENCE()

◆ FILE_SECBOOT()

◆ acpi_resource_tag()

◆ acpi_small_len()

◆ acpi_large_len()

◆ acpi_resource_len()

◆ acpi_resource_next()

◆ acpi_name()

◆ acpi_init()

◆ acpi_find_via_rsdt()

◆ acpi_find_rsdt()

◆ acpi_find()

◆ acpi_describe()

◆ acpi_fix_checksum()

◆ acpi_table()

◆ acpi_extract()

◆ acpi_ioremap()

◆ acpi_add()

◆ acpi_del()

◆ acpi_install()

Variable Documentation

◆ acpi_finder