X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fexecuter%2Fexsystem.c;h=28aef3e69ecceeff2a2855854d3f59167ea905c5;hb=refs%2Fheads%2Fvserver;hp=42a1332b53d45c3ea4974df89d19dbd152e9bbae;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/drivers/acpi/executer/exsystem.c b/drivers/acpi/executer/exsystem.c index 42a1332b5..28aef3e69 100644 --- a/drivers/acpi/executer/exsystem.c +++ b/drivers/acpi/executer/exsystem.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2004, R. Byron Moore + * Copyright (C) 2000 - 2006, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -42,77 +42,124 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include #include #include #define _COMPONENT ACPI_EXECUTER - ACPI_MODULE_NAME ("exsystem") - +ACPI_MODULE_NAME("exsystem") /******************************************************************************* * * FUNCTION: acpi_ex_system_wait_semaphore * - * PARAMETERS: Semaphore - OSD semaphore to wait on - * Timeout - Max time to wait + * PARAMETERS: Semaphore - Semaphore to wait on + * Timeout - Max time to wait * * RETURN: Status * * DESCRIPTION: Implements a semaphore wait with a check to see if the * semaphore is available immediately. If it is not, the - * interpreter is released. + * interpreter is released before waiting. * ******************************************************************************/ - -acpi_status -acpi_ex_system_wait_semaphore ( - acpi_handle semaphore, - u16 timeout) +acpi_status acpi_ex_system_wait_semaphore(acpi_semaphore semaphore, u16 timeout) { - acpi_status status; - acpi_status status2; + acpi_status status; + acpi_status status2; + + ACPI_FUNCTION_TRACE(ex_system_wait_semaphore); + + status = acpi_os_wait_semaphore(semaphore, 1, ACPI_DO_NOT_WAIT); + if (ACPI_SUCCESS(status)) { + return_ACPI_STATUS(status); + } + + if (status == AE_TIME) { + /* We must wait, so unlock the interpreter */ + + acpi_ex_exit_interpreter(); + + status = acpi_os_wait_semaphore(semaphore, 1, timeout); - ACPI_FUNCTION_TRACE ("ex_system_wait_semaphore"); + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "*** Thread awake after blocking, %s\n", + acpi_format_exception(status))); + + /* Reacquire the interpreter */ + status2 = acpi_ex_enter_interpreter(); + if (ACPI_FAILURE(status2)) { - status = acpi_os_wait_semaphore (semaphore, 1, 0); - if (ACPI_SUCCESS (status)) { - return_ACPI_STATUS (status); + /* Report fatal error, could not acquire interpreter */ + + return_ACPI_STATUS(status2); + } + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ex_system_wait_mutex + * + * PARAMETERS: Mutex - Mutex to wait on + * Timeout - Max time to wait + * + * RETURN: Status + * + * DESCRIPTION: Implements a mutex wait with a check to see if the + * mutex is available immediately. If it is not, the + * interpreter is released before waiting. + * + ******************************************************************************/ + +acpi_status acpi_ex_system_wait_mutex(acpi_mutex mutex, u16 timeout) +{ + acpi_status status; + acpi_status status2; + + ACPI_FUNCTION_TRACE(ex_system_wait_mutex); + + status = acpi_os_acquire_mutex(mutex, ACPI_DO_NOT_WAIT); + if (ACPI_SUCCESS(status)) { + return_ACPI_STATUS(status); } if (status == AE_TIME) { + /* We must wait, so unlock the interpreter */ - acpi_ex_exit_interpreter (); + acpi_ex_exit_interpreter(); - status = acpi_os_wait_semaphore (semaphore, 1, timeout); + status = acpi_os_acquire_mutex(mutex, timeout); - ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "*** Thread awake after blocking, %s\n", - acpi_format_exception (status))); + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "*** Thread awake after blocking, %s\n", + acpi_format_exception(status))); /* Reacquire the interpreter */ - status2 = acpi_ex_enter_interpreter (); - if (ACPI_FAILURE (status2)) { + status2 = acpi_ex_enter_interpreter(); + if (ACPI_FAILURE(status2)) { + /* Report fatal error, could not acquire interpreter */ - return_ACPI_STATUS (status2); + return_ACPI_STATUS(status2); } } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_system_do_stall * - * PARAMETERS: how_long - The amount of time to stall, - * in microseconds + * PARAMETERS: how_long - The amount of time to stall, + * in microseconds * * RETURN: Status * @@ -124,40 +171,35 @@ acpi_ex_system_wait_semaphore ( * ******************************************************************************/ -acpi_status -acpi_ex_system_do_stall ( - u32 how_long) +acpi_status acpi_ex_system_do_stall(u32 how_long) { - acpi_status status = AE_OK; - + acpi_status status = AE_OK; - ACPI_FUNCTION_ENTRY (); + ACPI_FUNCTION_ENTRY(); - - if (how_long > 255) /* 255 microseconds */ { + if (how_long > 255) { /* 255 microseconds */ /* * Longer than 255 usec, this is an error * * (ACPI specifies 100 usec as max, but this gives some slack in * order to support existing BIOSs) */ - ACPI_REPORT_ERROR (("Stall: Time parameter is too large (%d)\n", how_long)); + ACPI_ERROR((AE_INFO, "Time parameter is too large (%d)", + how_long)); status = AE_AML_OPERAND_VALUE; - } - else { - acpi_os_stall (how_long); + } else { + acpi_os_stall(how_long); } return (status); } - /******************************************************************************* * * FUNCTION: acpi_ex_system_do_suspend * - * PARAMETERS: how_long - The amount of time to suspend, - * in milliseconds + * PARAMETERS: how_long - The amount of time to suspend, + * in milliseconds * * RETURN: None * @@ -165,36 +207,30 @@ acpi_ex_system_do_stall ( * ******************************************************************************/ -acpi_status -acpi_ex_system_do_suspend ( - u32 how_long) +acpi_status acpi_ex_system_do_suspend(acpi_integer how_long) { - acpi_status status; - - - ACPI_FUNCTION_ENTRY (); + acpi_status status; + ACPI_FUNCTION_ENTRY(); /* Since this thread will sleep, we must release the interpreter */ - acpi_ex_exit_interpreter (); + acpi_ex_exit_interpreter(); - acpi_os_sleep ((u16) (how_long / (u32) 1000), - (u16) (how_long % (u32) 1000)); + acpi_os_sleep(how_long); /* And now we must get the interpreter again */ - status = acpi_ex_enter_interpreter (); + status = acpi_ex_enter_interpreter(); return (status); } - /******************************************************************************* * * FUNCTION: acpi_ex_system_acquire_mutex * - * PARAMETERS: *time_desc - The 'time to delay' object descriptor - * *obj_desc - The object descriptor for this op + * PARAMETERS: time_desc - Maximum time to wait for the mutex + * obj_desc - The object descriptor for this op * * RETURN: Status * @@ -205,39 +241,35 @@ acpi_ex_system_do_suspend ( ******************************************************************************/ acpi_status -acpi_ex_system_acquire_mutex ( - union acpi_operand_object *time_desc, - union acpi_operand_object *obj_desc) +acpi_ex_system_acquire_mutex(union acpi_operand_object * time_desc, + union acpi_operand_object * obj_desc) { - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE_PTR ("ex_system_acquire_mutex", obj_desc); + acpi_status status = AE_OK; + ACPI_FUNCTION_TRACE_PTR(ex_system_acquire_mutex, obj_desc); if (!obj_desc) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - /* - * Support for the _GL_ Mutex object -- go get the global lock - */ - if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) { - status = acpi_ev_acquire_global_lock ((u16) time_desc->integer.value); - return_ACPI_STATUS (status); + /* Support for the _GL_ Mutex object -- go get the global lock */ + + if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) { + status = + acpi_ev_acquire_global_lock((u16) time_desc->integer.value); + return_ACPI_STATUS(status); } - status = acpi_ex_system_wait_semaphore (obj_desc->mutex.semaphore, - (u16) time_desc->integer.value); - return_ACPI_STATUS (status); + status = acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex, + (u16) time_desc->integer.value); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_system_release_mutex * - * PARAMETERS: *obj_desc - The object descriptor for this op + * PARAMETERS: obj_desc - The object descriptor for this op * * RETURN: Status * @@ -248,70 +280,60 @@ acpi_ex_system_acquire_mutex ( * ******************************************************************************/ -acpi_status -acpi_ex_system_release_mutex ( - union acpi_operand_object *obj_desc) +acpi_status acpi_ex_system_release_mutex(union acpi_operand_object *obj_desc) { - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE ("ex_system_release_mutex"); + acpi_status status = AE_OK; + ACPI_FUNCTION_TRACE(ex_system_release_mutex); if (!obj_desc) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - /* - * Support for the _GL_ Mutex object -- release the global lock - */ - if (obj_desc->mutex.semaphore == acpi_gbl_global_lock_semaphore) { - status = acpi_ev_release_global_lock (); - return_ACPI_STATUS (status); + /* Support for the _GL_ Mutex object -- release the global lock */ + + if (obj_desc->mutex.os_mutex == ACPI_GLOBAL_LOCK) { + status = acpi_ev_release_global_lock(); + return_ACPI_STATUS(status); } - status = acpi_os_signal_semaphore (obj_desc->mutex.semaphore, 1); - return_ACPI_STATUS (status); + acpi_os_release_mutex(obj_desc->mutex.os_mutex); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_ex_system_signal_event * - * PARAMETERS: *obj_desc - The object descriptor for this op + * PARAMETERS: obj_desc - The object descriptor for this op * - * RETURN: AE_OK + * RETURN: Status * * DESCRIPTION: Provides an access point to perform synchronization operations * within the AML. * ******************************************************************************/ -acpi_status -acpi_ex_system_signal_event ( - union acpi_operand_object *obj_desc) +acpi_status acpi_ex_system_signal_event(union acpi_operand_object *obj_desc) { - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE ("ex_system_signal_event"); + acpi_status status = AE_OK; + ACPI_FUNCTION_TRACE(ex_system_signal_event); if (obj_desc) { - status = acpi_os_signal_semaphore (obj_desc->event.semaphore, 1); + status = + acpi_os_signal_semaphore(obj_desc->event.os_semaphore, 1); } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_system_wait_event * - * PARAMETERS: *time_desc - The 'time to delay' object descriptor - * *obj_desc - The object descriptor for this op + * PARAMETERS: time_desc - The 'time to delay' object descriptor + * obj_desc - The object descriptor for this op * * RETURN: Status * @@ -322,30 +344,28 @@ acpi_ex_system_signal_event ( ******************************************************************************/ acpi_status -acpi_ex_system_wait_event ( - union acpi_operand_object *time_desc, - union acpi_operand_object *obj_desc) +acpi_ex_system_wait_event(union acpi_operand_object *time_desc, + union acpi_operand_object *obj_desc) { - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE ("ex_system_wait_event"); + acpi_status status = AE_OK; + ACPI_FUNCTION_TRACE(ex_system_wait_event); if (obj_desc) { - status = acpi_ex_system_wait_semaphore (obj_desc->event.semaphore, - (u16) time_desc->integer.value); + status = + acpi_ex_system_wait_semaphore(obj_desc->event.os_semaphore, + (u16) time_desc->integer. + value); } - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ex_system_reset_event * - * PARAMETERS: *obj_desc - The object descriptor for this op + * PARAMETERS: obj_desc - The object descriptor for this op * * RETURN: Status * @@ -353,27 +373,23 @@ acpi_ex_system_wait_event ( * ******************************************************************************/ -acpi_status -acpi_ex_system_reset_event ( - union acpi_operand_object *obj_desc) +acpi_status acpi_ex_system_reset_event(union acpi_operand_object *obj_desc) { - acpi_status status = AE_OK; - void *temp_semaphore; - - - ACPI_FUNCTION_ENTRY (); + acpi_status status = AE_OK; + acpi_semaphore temp_semaphore; + ACPI_FUNCTION_ENTRY(); /* * We are going to simply delete the existing semaphore and * create a new one! */ - status = acpi_os_create_semaphore (ACPI_NO_UNIT_LIMIT, 0, &temp_semaphore); - if (ACPI_SUCCESS (status)) { - (void) acpi_os_delete_semaphore (obj_desc->event.semaphore); - obj_desc->event.semaphore = temp_semaphore; + status = + acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, &temp_semaphore); + if (ACPI_SUCCESS(status)) { + (void)acpi_os_delete_semaphore(obj_desc->event.os_semaphore); + obj_desc->event.os_semaphore = temp_semaphore; } return (status); } -