void
do_poweroff(int n, char *va)
{
acpi_enable();
acpi_poweroff();
return;
}
static void acpi_hibernation_leave(void)
{
/*
* If ACPI is not enabled by the BIOS and the boot kernel, we need to
* enable it here.
*/
acpi_enable();
/* Reprogram control registers and execute _BFS */
acpi_leave_sleep_state_prep(ACPI_STATE_S4);
}
int main()
{
//Start video driver (must always be before loading message)
mm_init();
pg_init();
real_init();
video_init();
video_setdriver(video_vgatext_getdriver(),0);
//Put loading message
cli_puts("ArcaneOS Loading...\n");
//Setup kernel
gdt_init();
idt_init();
isr_init();
irq_init();
timer_init();
kb_init();
ui_init();
cpuid_init();
cmos_init();
rtc_init();
acpi_init();
power_init();
mt_init();
syscall_init();
floppy_init();
__asm__ __volatile__ ("sti");
//Enable ACPI
acpi_enable();
//Create thread for ui
mt_create_thread(mt_kernel_process,test,2);
//Endless loop to prevent bugs when all threads are sleeping
for(;;)
__asm__ __volatile__ ("hlt");
}
/*******************************************************************************
*
* FUNCTION: acpi_enable_subsystem
*
* PARAMETERS: Flags - Init/enable Options
*
* RETURN: Status
*
* DESCRIPTION: Completes the subsystem initialization including hardware.
* Puts system into ACPI mode if it isn't already.
*
******************************************************************************/
acpi_status acpi_enable_subsystem(u32 flags)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
/* Enable ACPI mode */
if (!(flags & ACPI_NO_ACPI_ENABLE)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Going into ACPI mode\n"));
acpi_gbl_original_mode = acpi_hw_get_mode();
status = acpi_enable();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
return_ACPI_STATUS(status);
}
}
/*
* Obtain a permanent mapping for the FACS. This is required for the
* Global Lock and the Firmware Waking Vector
*/
status = acpi_tb_initialize_facs();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
return_ACPI_STATUS(status);
}
/*
* Install the default op_region handlers. These are installed unless
* other handlers have already been installed via the
* install_address_space_handler interface.
*/
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Installing default address space handlers\n"));
status = acpi_ev_install_region_handlers();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*
* Note1: We must have the hardware and events initialized before we can
* execute any control methods safely. Any control method can require
* ACPI hardware support, so the hardware must be fully initialized before
* any method execution!
*
* Note2: Fixed events are initialized and enabled here. GPEs are
* initialized, but cannot be enabled until after the hardware is
* completely initialized (SCI and global_lock activated)
*/
if (!(flags & ACPI_NO_EVENT_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Initializing ACPI events\n"));
status = acpi_ev_initialize_events();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Install the SCI handler and Global Lock handler. This completes the
* hardware initialization.
*/
if (!(flags & ACPI_NO_HANDLER_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Installing SCI/GL handlers\n"));
status = acpi_ev_install_xrupt_handlers();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
return_ACPI_STATUS(status);
}
acpi_status acpi_enable_subsystem(u32 flags)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_enable_subsystem");
/*
* We must initialize the hardware before we can enable ACPI.
* The values from the FADT are validated here.
*/
if (!(flags & ACPI_NO_HARDWARE_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Initializing ACPI hardware\n"));
status = acpi_hw_initialize();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* Enable ACPI mode */
if (!(flags & ACPI_NO_ACPI_ENABLE)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Going into ACPI mode\n"));
acpi_gbl_original_mode = acpi_hw_get_mode();
status = acpi_enable();
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_WARN,
"acpi_enable failed.\n"));
return_ACPI_STATUS(status);
}
}
/*
* Install the default op_region handlers. These are installed unless
* other handlers have already been installed via the
* install_address_space_handler interface.
*/
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Installing default address space handlers\n"));
status = acpi_ev_install_region_handlers();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*
* NOTE: We must have the hardware AND events initialized before we can
* execute ANY control methods SAFELY. Any control method can require
* ACPI hardware support, so the hardware MUST be initialized before
* execution!
*/
if (!(flags & ACPI_NO_EVENT_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Initializing ACPI events\n"));
status = acpi_ev_initialize_events();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* Install the SCI handler and Global Lock handler */
if (!(flags & ACPI_NO_HANDLER_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Installing SCI/GL handlers\n"));
status = acpi_ev_install_xrupt_handlers();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_enable_subsystem
*
* PARAMETERS: flags - Init/enable Options
*
* RETURN: Status
*
* DESCRIPTION: Completes the subsystem initialization including hardware.
* Puts system into ACPI mode if it isn't already.
*
******************************************************************************/
acpi_status ACPI_INIT_FUNCTION acpi_enable_subsystem(u32 flags)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
/*
* The early initialization phase is complete. The namespace is loaded,
* and we can now support address spaces other than Memory, I/O, and
* PCI_Config.
*/
acpi_gbl_early_initialization = FALSE;
#if (!ACPI_REDUCED_HARDWARE)
/* Enable ACPI mode */
if (!(flags & ACPI_NO_ACPI_ENABLE)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Going into ACPI mode\n"));
acpi_gbl_original_mode = acpi_hw_get_mode();
status = acpi_enable();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
return_ACPI_STATUS(status);
}
}
/*
* Obtain a permanent mapping for the FACS. This is required for the
* Global Lock and the Firmware Waking Vector
*/
if (!(flags & ACPI_NO_FACS_INIT)) {
status = acpi_tb_initialize_facs();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
return_ACPI_STATUS(status);
}
}
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*
* Note1: We must have the hardware and events initialized before we can
* execute any control methods safely. Any control method can require
* ACPI hardware support, so the hardware must be fully initialized before
* any method execution!
*
* Note2: Fixed events are initialized and enabled here. GPEs are
* initialized, but cannot be enabled until after the hardware is
* completely initialized (SCI and global_lock activated) and the various
* initialization control methods are run (_REG, _STA, _INI) on the
* entire namespace.
*/
if (!(flags & ACPI_NO_EVENT_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Initializing ACPI events\n"));
status = acpi_ev_initialize_events();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Install the SCI handler and Global Lock handler. This completes the
* hardware initialization.
*/
if (!(flags & ACPI_NO_HANDLER_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Installing SCI/GL handlers\n"));
status = acpi_ev_install_xrupt_handlers();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
#endif /* !ACPI_REDUCED_HARDWARE */
return_ACPI_STATUS(status);
}
acpi_status
acpi_enable_subsystem (
u32 flags)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE ("acpi_enable_subsystem");
/*
* We must initialize the hardware before we can enable ACPI.
* The values from the FADT are validated here.
*/
if (!(flags & ACPI_NO_HARDWARE_INIT)) {
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI hardware\n"));
status = acpi_hw_initialize ();
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
}
/*
* Enable ACPI mode
*/
if (!(flags & ACPI_NO_ACPI_ENABLE)) {
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
acpi_gbl_original_mode = acpi_hw_get_mode();
status = acpi_enable ();
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "acpi_enable failed.\n"));
return_ACPI_STATUS (status);
}
}
/*
* Initialize ACPI Event handling
*
* NOTE: We must have the hardware AND events initialized before we can execute
* ANY control methods SAFELY. Any control method can require ACPI hardware
* support, so the hardware MUST be initialized before execution!
*/
if (!(flags & ACPI_NO_EVENT_INIT)) {
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Initializing ACPI events\n"));
status = acpi_ev_initialize ();
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
}
/* Install the SCI handler, Global Lock handler, and GPE handlers */
if (!(flags & ACPI_NO_HANDLER_INIT)) {
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Installing SCI/GL/GPE handlers\n"));
status = acpi_ev_handler_initialize ();
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
}
return_ACPI_STATUS (status);
}
acpi_status
acpi_db_command_dispatch(char *input_buffer,
struct acpi_walk_state * walk_state,
union acpi_parse_object * op)
{
u32 temp;
u32 command_index;
u32 param_count;
char *command_line;
acpi_status status = AE_CTRL_TRUE;
/* If acpi_terminate has been called, terminate this thread */
if (acpi_gbl_db_terminate_loop) {
return (AE_CTRL_TERMINATE);
}
/* Find command and add to the history buffer */
param_count = acpi_db_get_line(input_buffer);
command_index = acpi_db_match_command(acpi_gbl_db_args[0]);
temp = 0;
/*
* We don't want to add the !! command to the history buffer. It
* would cause an infinite loop because it would always be the
* previous command.
*/
if (command_index != CMD_HISTORY_LAST) {
acpi_db_add_to_history(input_buffer);
}
/* Verify that we have the minimum number of params */
if (param_count < acpi_gbl_db_commands[command_index].min_args) {
acpi_os_printf
("%u parameters entered, [%s] requires %u parameters\n",
param_count, acpi_gbl_db_commands[command_index].name,
acpi_gbl_db_commands[command_index].min_args);
acpi_db_display_command_info(acpi_gbl_db_commands
[command_index].name, FALSE);
return (AE_CTRL_TRUE);
}
/* Decode and dispatch the command */
switch (command_index) {
case CMD_NULL:
if (op) {
return (AE_OK);
}
break;
case CMD_ALLOCATIONS:
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
acpi_ut_dump_allocations((u32)-1, NULL);
#endif
break;
case CMD_ARGS:
case CMD_ARGUMENTS:
acpi_db_display_arguments();
break;
case CMD_BREAKPOINT:
acpi_db_set_method_breakpoint(acpi_gbl_db_args[1], walk_state,
op);
break;
case CMD_BUSINFO:
acpi_db_get_bus_info();
break;
case CMD_CALL:
acpi_db_set_method_call_breakpoint(op);
status = AE_OK;
break;
case CMD_DEBUG:
acpi_db_execute(acpi_gbl_db_args[1],
&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
EX_SINGLE_STEP);
break;
case CMD_DISASSEMBLE:
case CMD_DISASM:
(void)acpi_db_disassemble_method(acpi_gbl_db_args[1]);
break;
case CMD_DUMP:
acpi_db_decode_and_display_object(acpi_gbl_db_args[1],
acpi_gbl_db_args[2]);
break;
case CMD_EVALUATE:
case CMD_EXECUTE:
acpi_db_execute(acpi_gbl_db_args[1],
&acpi_gbl_db_args[2], &acpi_gbl_db_arg_types[2],
EX_NO_SINGLE_STEP);
break;
case CMD_FIND:
status = acpi_db_find_name_in_namespace(acpi_gbl_db_args[1]);
break;
case CMD_GO:
acpi_gbl_cm_single_step = FALSE;
return (AE_OK);
case CMD_HANDLERS:
acpi_db_display_handlers();
break;
case CMD_HELP:
case CMD_HELP2:
acpi_db_display_help(acpi_gbl_db_args[1]);
break;
case CMD_HISTORY:
acpi_db_display_history();
break;
case CMD_HISTORY_EXE: /* ! command */
command_line = acpi_db_get_from_history(acpi_gbl_db_args[1]);
if (!command_line) {
return (AE_CTRL_TRUE);
}
status = acpi_db_command_dispatch(command_line, walk_state, op);
return (status);
case CMD_HISTORY_LAST: /* !! command */
command_line = acpi_db_get_from_history(NULL);
if (!command_line) {
return (AE_CTRL_TRUE);
}
status = acpi_db_command_dispatch(command_line, walk_state, op);
return (status);
case CMD_INFORMATION:
acpi_db_display_method_info(op);
break;
case CMD_INTEGRITY:
acpi_db_check_integrity();
break;
case CMD_INTO:
if (op) {
acpi_gbl_cm_single_step = TRUE;
return (AE_OK);
}
break;
case CMD_LEVEL:
if (param_count == 0) {
acpi_os_printf
("Current debug level for file output is: %8.8lX\n",
acpi_gbl_db_debug_level);
acpi_os_printf
("Current debug level for console output is: %8.8lX\n",
acpi_gbl_db_console_debug_level);
} else if (param_count == 2) {
temp = acpi_gbl_db_console_debug_level;
acpi_gbl_db_console_debug_level =
strtoul(acpi_gbl_db_args[1], NULL, 16);
acpi_os_printf
("Debug Level for console output was %8.8lX, now %8.8lX\n",
temp, acpi_gbl_db_console_debug_level);
} else {
temp = acpi_gbl_db_debug_level;
acpi_gbl_db_debug_level =
strtoul(acpi_gbl_db_args[1], NULL, 16);
acpi_os_printf
("Debug Level for file output was %8.8lX, now %8.8lX\n",
temp, acpi_gbl_db_debug_level);
}
break;
case CMD_LIST:
acpi_db_disassemble_aml(acpi_gbl_db_args[1], op);
break;
case CMD_LOCKS:
acpi_db_display_locks();
break;
case CMD_LOCALS:
acpi_db_display_locals();
break;
case CMD_METHODS:
status = acpi_db_display_objects("METHOD", acpi_gbl_db_args[1]);
break;
case CMD_NAMESPACE:
acpi_db_dump_namespace(acpi_gbl_db_args[1],
acpi_gbl_db_args[2]);
break;
case CMD_NOTIFY:
temp = strtoul(acpi_gbl_db_args[2], NULL, 0);
acpi_db_send_notify(acpi_gbl_db_args[1], temp);
break;
case CMD_OBJECTS:
acpi_ut_strupr(acpi_gbl_db_args[1]);
status =
acpi_db_display_objects(acpi_gbl_db_args[1],
acpi_gbl_db_args[2]);
break;
case CMD_OSI:
acpi_db_display_interfaces(acpi_gbl_db_args[1],
acpi_gbl_db_args[2]);
break;
case CMD_OWNER:
acpi_db_dump_namespace_by_owner(acpi_gbl_db_args[1],
acpi_gbl_db_args[2]);
break;
case CMD_PATHS:
acpi_db_dump_namespace_paths();
break;
case CMD_PREFIX:
acpi_db_set_scope(acpi_gbl_db_args[1]);
break;
case CMD_REFERENCES:
acpi_db_find_references(acpi_gbl_db_args[1]);
break;
case CMD_RESOURCES:
acpi_db_display_resources(acpi_gbl_db_args[1]);
break;
case CMD_RESULTS:
acpi_db_display_results();
break;
case CMD_SET:
acpi_db_set_method_data(acpi_gbl_db_args[1],
acpi_gbl_db_args[2],
acpi_gbl_db_args[3]);
break;
case CMD_STATS:
status = acpi_db_display_statistics(acpi_gbl_db_args[1]);
break;
case CMD_STOP:
return (AE_NOT_IMPLEMENTED);
case CMD_TABLES:
acpi_db_display_table_info(acpi_gbl_db_args[1]);
break;
case CMD_TEMPLATE:
acpi_db_display_template(acpi_gbl_db_args[1]);
break;
case CMD_TRACE:
acpi_db_trace(acpi_gbl_db_args[1], acpi_gbl_db_args[2],
acpi_gbl_db_args[3]);
break;
case CMD_TREE:
acpi_db_display_calling_tree();
break;
case CMD_TYPE:
acpi_db_display_object_type(acpi_gbl_db_args[1]);
break;
#ifdef ACPI_APPLICATION
/* Hardware simulation commands. */
case CMD_ENABLEACPI:
#if (!ACPI_REDUCED_HARDWARE)
status = acpi_enable();
if (ACPI_FAILURE(status)) {
acpi_os_printf("AcpiEnable failed (Status=%X)\n",
status);
return (status);
}
#endif /* !ACPI_REDUCED_HARDWARE */
break;
case CMD_EVENT:
acpi_os_printf("Event command not implemented\n");
break;
case CMD_GPE:
acpi_db_generate_gpe(acpi_gbl_db_args[1], acpi_gbl_db_args[2]);
break;
case CMD_GPES:
acpi_db_display_gpes();
break;
case CMD_SCI:
acpi_db_generate_sci();
break;
case CMD_SLEEP:
status = acpi_db_sleep(acpi_gbl_db_args[1]);
break;
/* File I/O commands. */
case CMD_CLOSE:
acpi_db_close_debug_file();
break;
case CMD_LOAD:{
struct acpi_new_table_desc *list_head = NULL;
status =
ac_get_all_tables_from_file(acpi_gbl_db_args[1],
ACPI_GET_ALL_TABLES,
&list_head);
if (ACPI_SUCCESS(status)) {
acpi_db_load_tables(list_head);
}
}
break;
case CMD_OPEN:
acpi_db_open_debug_file(acpi_gbl_db_args[1]);
break;
/* User space commands. */
case CMD_TERMINATE:
acpi_db_set_output_destination(ACPI_DB_REDIRECTABLE_OUTPUT);
acpi_ut_subsystem_shutdown();
/*
* TBD: [Restructure] Need some way to re-initialize without
* re-creating the semaphores!
*/
acpi_gbl_db_terminate_loop = TRUE;
/* acpi_initialize (NULL); */
break;
case CMD_THREADS:
acpi_db_create_execution_threads(acpi_gbl_db_args[1],
acpi_gbl_db_args[2],
acpi_gbl_db_args[3]);
break;
/* Debug test commands. */
case CMD_PREDEFINED:
acpi_db_check_predefined_names();
break;
case CMD_TEST:
acpi_db_execute_test(acpi_gbl_db_args[1]);
break;
case CMD_UNLOAD:
acpi_db_unload_acpi_table(acpi_gbl_db_args[1]);
break;
#endif
case CMD_EXIT:
case CMD_QUIT:
if (op) {
acpi_os_printf("Method execution terminated\n");
return (AE_CTRL_TERMINATE);
}
if (!acpi_gbl_db_output_to_file) {
acpi_dbg_level = ACPI_DEBUG_DEFAULT;
}
#ifdef ACPI_APPLICATION
acpi_db_close_debug_file();
#endif
acpi_gbl_db_terminate_loop = TRUE;
return (AE_CTRL_TERMINATE);
case CMD_NOT_FOUND:
default:
acpi_os_printf("%s: unknown command\n", acpi_gbl_db_args[0]);
return (AE_CTRL_TRUE);
}
if (ACPI_SUCCESS(status)) {
status = AE_CTRL_TRUE;
}
return (status);
}
/**ltl
* 功能:使能ACPI子系统
* 参数:
* 返回值:
* 说明:
*/
acpi_status acpi_enable_subsystem(u32 flags)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
/*
* We must initialize the hardware before we can enable ACPI.
* The values from the FADT are validated here.
*/
if (!(flags & ACPI_NO_HARDWARE_INIT)) { /* 初始化ACPI硬件模块 */
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Initializing ACPI hardware\n"));
status = acpi_hw_initialize();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/* Enable ACPI mode */
if (!(flags & ACPI_NO_ACPI_ENABLE)) { /* 使能ACPI硬件模块 */
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Going into ACPI mode\n"));
/* 返回值模式 */
acpi_gbl_original_mode = acpi_hw_get_mode();
/* 设置ACPI模式 */
status = acpi_enable();
if (ACPI_FAILURE(status)) {
ACPI_WARNING((AE_INFO, "AcpiEnable failed"));
return_ACPI_STATUS(status);
}
}
/*
* Install the default op_region handlers. These are installed unless
* other handlers have already been installed via the
* install_address_space_handler interface.
*/
if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Installing default address space handlers\n"));
/* 为四个地址空间设置默认处理句柄 */
status = acpi_ev_install_region_handlers();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*
* Note1: We must have the hardware and events initialized before we can
* execute any control methods safely. Any control method can require
* ACPI hardware support, so the hardware must be fully initialized before
* any method execution!
*
* Note2: Fixed events are initialized and enabled here. GPEs are
* initialized, but cannot be enabled until after the hardware is
* completely initialized (SCI and global_lock activated)
*/
if (!(flags & ACPI_NO_EVENT_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Initializing ACPI events\n"));
/* 初始化ACPI事件(设置相关寄存器) */
status = acpi_ev_initialize_events();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Install the SCI handler and Global Lock handler. This completes the
* hardware initialization.
*/
if (!(flags & ACPI_NO_HANDLER_INIT)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"[Init] Installing SCI/GL handlers\n"));
/* 为ACPI模块安装中断处理函数 */
status = acpi_ev_install_xrupt_handlers();
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
* Complete the GPE initialization for the GPE blocks defined in the FADT
* (GPE block 0 and 1).
*
* Note1: This is where the _PRW methods are executed for the GPEs. These
* methods can only be executed after the SCI and Global Lock handlers are
* installed and initialized.
*
* Note2: Currently, there seems to be no need to run the _REG methods
* before execution of the _PRW methods and enabling of the GPEs.
*/
if (!(flags & ACPI_NO_EVENT_INIT)) {
status = acpi_ev_install_fadt_gpes(); /* 使能通用寄存器 */
if (ACPI_FAILURE(status)) {
return (status);
}
}
return_ACPI_STATUS(status);
}