tables.c File Reference

#include <kernel/acpi/tables.h>
#include <kernel/acpi/acpi.h>
#include <kernel/fs/file.h>
#include <kernel/fs/vfs.h>
#include <kernel/log/log.h>
#include <kernel/log/panic.h>
#include <boot/boot_info.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Go to the source code of this file.

Functions
static uint64_t	acpi_table_read (file_t *file, void *buffer, uint64_t count, uint64_t *offset)
static bool	acpi_is_table_valid (sdt_header_t *table)
static bool	acpi_is_xsdt_valid (xsdt_t *xsdt)
static bool	acpi_is_rsdp_valid (rsdp_t *rsdp)
static uint64_t	acpi_tables_push (sdt_header_t *table)
static uint64_t	acpi_tables_load_from_xsdt (xsdt_t *xsdt)
static uint64_t	acpi_tables_load_from_fadt (void)
static uint64_t	acpi_tables_init_handlers (sdt_header_t *table)
void	acpi_tables_init (rsdp_t *rsdp)
	Initialize ACPI tables and call their init handlers.
void	acpi_tables_expose (void)
	Expose ACPI tables to sysfs.
sdt_header_t *	acpi_tables_lookup (const char *signature, uint64_t n)
	Lookup the n'th table matching the signature.

Variables
static uint64_t	ssdtAmount = 0
static uint64_t	tableAmount = 0
static acpi_cached_table_t *	cachedTables = NULL
static dentry_t *	tablesDir = NULL
const acpi_sdt_handler_t	_acpiSdtHandlersStart []
const acpi_sdt_handler_t	_acpiSdtHandlersEnd []
static file_ops_t	tableFileOps

Function Documentation

acpi_is_rsdp_valid()

static bool acpi_is_rsdp_valid ( rsdp_t *  rsdp )

static

Definition at line 81 of file tables.c.

References acpi_is_checksum_valid(), rsdp_t::length, LOG_ERR, memcmp(), rsdp_t::revision, RSDP_CURRENT_REVISION, RSDP_SIGNATURE_LENGTH, RSDP_V1_LENGTH, and rsdp_t::signature.

Referenced by acpi_tables_init().

acpi_is_table_valid()

static bool acpi_is_table_valid ( sdt_header_t *  table )

static

Definition at line 48 of file tables.c.

References acpi_is_checksum_valid(), sdt_header_t::length, LOG_ERR, SDT_SIGNATURE_LENGTH, and sdt_header_t::signature.

Referenced by acpi_is_xsdt_valid(), and acpi_tables_push().

acpi_is_xsdt_valid()

static bool acpi_is_xsdt_valid ( xsdt_t *  xsdt )

static

Definition at line 65 of file tables.c.

References acpi_is_table_valid(), xsdt_t::header, LOG_ERR, memcmp(), SDT_SIGNATURE_LENGTH, and sdt_header_t::signature.

Referenced by acpi_tables_load_from_xsdt().

acpi_table_read()

static uint64_t acpi_table_read ( file_t *  file, void *  buffer, uint64_t  count, uint64_t *  offset  )

static

Definition at line 26 of file tables.c.

References buffer, BUFFER_READ, count, EINVAL, ERR, errno, file, dentry_t::inode, sdt_header_t::length, NULL, and inode_t::private.

acpi_tables_init_handlers()

static uint64_t acpi_tables_init_handlers ( sdt_header_t *  table )

static

Definition at line 199 of file tables.c.

References _acpiSdtHandlersEnd, _acpiSdtHandlersStart, ERR, LOG_ERR, memcmp(), SDT_SIGNATURE_LENGTH, and sdt_header_t::signature.

Referenced by acpi_tables_init().

acpi_tables_load_from_fadt()

static uint64_t acpi_tables_load_from_fadt ( void  )

static

Definition at line 166 of file tables.c.

References acpi_tables_lookup(), acpi_tables_push(), fadt_t::dsdt, ERR, FADT_SIGNATURE, LOG_ERR, NULL, and fadt_t::xDsdt.

Referenced by acpi_tables_init().

acpi_tables_load_from_xsdt()

static uint64_t acpi_tables_load_from_xsdt ( xsdt_t *  xsdt )

static

Definition at line 145 of file tables.c.

References acpi_is_xsdt_valid(), acpi_tables_push(), ERR, xsdt_t::header, sdt_header_t::length, LOG_ERR, sdt_header_t::signature, and xsdt_t::tables.

Referenced by acpi_tables_init().

acpi_tables_push()

static uint64_t acpi_tables_push ( sdt_header_t *  table )

static

Definition at line 115 of file tables.c.

References acpi_is_table_valid(), cachedTables, ERR, free(), sdt_header_t::length, LOG_ERR, LOG_INFO, malloc(), memcpy(), NULL, sdt_header_t::oemId, realloc(), sdt_header_t::revision, SDT_OEM_ID_LENGTH, SDT_SIGNATURE_LENGTH, sdt_header_t::signature, acpi_cached_table_t::table, and tableAmount.

Referenced by acpi_tables_load_from_fadt(), and acpi_tables_load_from_xsdt().

Variable Documentation

_acpiSdtHandlersEnd

const acpi_sdt_handler_t _acpiSdtHandlersEnd[]

extern

Referenced by acpi_tables_init_handlers().

_acpiSdtHandlersStart

const acpi_sdt_handler_t _acpiSdtHandlersStart[]

extern

Referenced by acpi_tables_init_handlers().

cachedTables

acpi_cached_table_t* cachedTables = NULL

static

Definition at line 18 of file tables.c.

Referenced by acpi_tables_expose(), acpi_tables_init(), acpi_tables_lookup(), and acpi_tables_push().

ssdtAmount

uint64_t ssdtAmount = 0

static

Definition at line 16 of file tables.c.

Referenced by acpi_tables_expose().

tableAmount

uint64_t tableAmount = 0

static

Definition at line 17 of file tables.c.

Referenced by acpi_tables_expose(), acpi_tables_init(), acpi_tables_lookup(), and acpi_tables_push().

tableFileOps

file_ops_t tableFileOps

static

Initial value:

= {
    .read = acpi_table_read,
}

Definition at line 44 of file tables.c.

Referenced by acpi_tables_expose().

tablesDir

dentry_t* tablesDir = NULL

static

Definition at line 20 of file tables.c.

Referenced by acpi_tables_expose().