diff options
Diffstat (limited to 'drivers/acpi/utilities/utmisc.c')
| -rw-r--r-- | drivers/acpi/utilities/utmisc.c | 1160 |
1 files changed, 256 insertions, 904 deletions
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c index f6de4ed3d52..474fe7cb6c0 100644 --- a/drivers/acpi/utilities/utmisc.c +++ b/drivers/acpi/utilities/utmisc.c @@ -41,24 +41,115 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acnamesp.h> - #define _COMPONENT ACPI_UTILITIES - ACPI_MODULE_NAME ("utmisc") +ACPI_MODULE_NAME("utmisc") + +/******************************************************************************* + * + * FUNCTION: acpi_ut_allocate_owner_id + * + * PARAMETERS: owner_id - Where the new owner ID is returned + * + * RETURN: Status + * + * DESCRIPTION: Allocate a table or method owner ID. The owner ID is used to + * track objects created by the table or method, to be deleted + * when the method exits or the table is unloaded. + * + ******************************************************************************/ +acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id) +{ + acpi_native_uint i; + acpi_status status; + + ACPI_FUNCTION_TRACE("ut_allocate_owner_id"); + + /* Mutex for the global ID mask */ + + status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } -/* Local prototypes */ + /* Find a free owner ID */ -static acpi_status -acpi_ut_create_mutex ( - acpi_mutex_handle mutex_id); + for (i = 0; i < 32; i++) { + if (!(acpi_gbl_owner_id_mask & (1 << i))) { + acpi_gbl_owner_id_mask |= (1 << i); + *owner_id = (acpi_owner_id) (i + 1); + goto exit; + } + } -static acpi_status -acpi_ut_delete_mutex ( - acpi_mutex_handle mutex_id); + /* + * If we are here, all owner_ids have been allocated. This probably should + * not happen since the IDs are reused after deallocation. The IDs are + * allocated upon table load (one per table) and method execution, and + * they are released when a table is unloaded or a method completes + * execution. + */ + *owner_id = 0; + status = AE_OWNER_ID_LIMIT; + ACPI_REPORT_ERROR(("Could not allocate new owner_id (32 max), AE_OWNER_ID_LIMIT\n")); + exit: + (void)acpi_ut_release_mutex(ACPI_MTX_CACHES); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ut_release_owner_id + * + * PARAMETERS: owner_id_ptr - Pointer to a previously allocated owner_iD + * + * RETURN: None. No error is returned because we are either exiting a + * control method or unloading a table. Either way, we would + * ignore any error anyway. + * + * DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 - 32 + * + ******************************************************************************/ + +void acpi_ut_release_owner_id(acpi_owner_id * owner_id_ptr) +{ + acpi_owner_id owner_id = *owner_id_ptr; + acpi_status status; + + ACPI_FUNCTION_TRACE("ut_release_owner_id"); + + /* Always clear the input owner_id (zero is an invalid ID) */ + + *owner_id_ptr = 0; + + /* Zero is not a valid owner_iD */ + + if ((owner_id == 0) || (owner_id > 32)) { + ACPI_REPORT_ERROR(("Invalid owner_id: %2.2X\n", owner_id)); + return_VOID; + } + + /* Mutex for the global ID mask */ + + status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES); + if (ACPI_FAILURE(status)) { + return_VOID; + } + + owner_id--; /* Normalize to zero */ + + /* Free the owner ID only if it is valid */ + + if (acpi_gbl_owner_id_mask & (1 << owner_id)) { + acpi_gbl_owner_id_mask ^= (1 << owner_id); + } + + (void)acpi_ut_release_mutex(ACPI_MTX_CACHES); + return_VOID; +} /******************************************************************************* * @@ -66,7 +157,7 @@ acpi_ut_delete_mutex ( * * PARAMETERS: src_string - The source string to convert * - * RETURN: Converted src_string (same as input pointer) + * RETURN: None * * DESCRIPTION: Convert string to uppercase * @@ -74,26 +165,25 @@ acpi_ut_delete_mutex ( * ******************************************************************************/ -char * -acpi_ut_strupr ( - char *src_string) +void acpi_ut_strupr(char *src_string) { - char *string; - + char *string; - ACPI_FUNCTION_ENTRY (); + ACPI_FUNCTION_ENTRY(); + if (!src_string) { + return; + } /* Walk entire string, uppercasing the letters */ for (string = src_string; *string; string++) { - *string = (char) ACPI_TOUPPER (*string); + *string = (char)ACPI_TOUPPER(*string); } - return (src_string); + return; } - /******************************************************************************* * * FUNCTION: acpi_ut_print_string @@ -108,85 +198,77 @@ acpi_ut_strupr ( * ******************************************************************************/ -void -acpi_ut_print_string ( - char *string, - u8 max_length) +void acpi_ut_print_string(char *string, u8 max_length) { - u32 i; - + u32 i; if (!string) { - acpi_os_printf ("<\"NULL STRING PTR\">"); + acpi_os_printf("<\"NULL STRING PTR\">"); return; } - acpi_os_printf ("\""); + acpi_os_printf("\""); for (i = 0; string[i] && (i < max_length); i++) { /* Escape sequences */ switch (string[i]) { case 0x07: - acpi_os_printf ("\\a"); /* BELL */ + acpi_os_printf("\\a"); /* BELL */ break; case 0x08: - acpi_os_printf ("\\b"); /* BACKSPACE */ + acpi_os_printf("\\b"); /* BACKSPACE */ break; case 0x0C: - acpi_os_printf ("\\f"); /* FORMFEED */ + acpi_os_printf("\\f"); /* FORMFEED */ break; case 0x0A: - acpi_os_printf ("\\n"); /* LINEFEED */ + acpi_os_printf("\\n"); /* LINEFEED */ break; case 0x0D: - acpi_os_printf ("\\r"); /* CARRIAGE RETURN*/ + acpi_os_printf("\\r"); /* CARRIAGE RETURN */ break; case 0x09: - acpi_os_printf ("\\t"); /* HORIZONTAL TAB */ + acpi_os_printf("\\t"); /* HORIZONTAL TAB */ break; case 0x0B: - acpi_os_printf ("\\v"); /* VERTICAL TAB */ + acpi_os_printf("\\v"); /* VERTICAL TAB */ break; - case '\'': /* Single Quote */ - case '\"': /* Double Quote */ - case '\\': /* Backslash */ - acpi_os_printf ("\\%c", (int) string[i]); + case '\'': /* Single Quote */ + case '\"': /* Double Quote */ + case '\\': /* Backslash */ + acpi_os_printf("\\%c", (int)string[i]); break; default: /* Check for printable character or hex escape */ - if (ACPI_IS_PRINT (string[i])) - { + if (ACPI_IS_PRINT(string[i])) { /* This is a normal character */ - acpi_os_printf ("%c", (int) string[i]); - } - else - { + acpi_os_printf("%c", (int)string[i]); + } else { /* All others will be Hex escapes */ - acpi_os_printf ("\\x%2.2X", (s32) string[i]); + acpi_os_printf("\\x%2.2X", (s32) string[i]); } break; } } - acpi_os_printf ("\""); + acpi_os_printf("\""); if (i == max_length && string[i]) { - acpi_os_printf ("..."); + acpi_os_printf("..."); } } - /******************************************************************************* * * FUNCTION: acpi_ut_dword_byte_swap @@ -199,22 +281,18 @@ acpi_ut_print_string ( * ******************************************************************************/ -u32 -acpi_ut_dword_byte_swap ( - u32 value) +u32 acpi_ut_dword_byte_swap(u32 value) { union { - u32 value; - u8 bytes[4]; + u32 value; + u8 bytes[4]; } out; union { - u32 value; - u8 bytes[4]; + u32 value; + u8 bytes[4]; } in; - - ACPI_FUNCTION_ENTRY (); - + ACPI_FUNCTION_ENTRY(); in.value = value; @@ -226,7 +304,6 @@ acpi_ut_dword_byte_swap ( return (out.value); } - /******************************************************************************* * * FUNCTION: acpi_ut_set_integer_width @@ -242,24 +319,20 @@ acpi_ut_dword_byte_swap ( * ******************************************************************************/ -void -acpi_ut_set_integer_width ( - u8 revision) +void acpi_ut_set_integer_width(u8 revision) { if (revision <= 1) { acpi_gbl_integer_bit_width = 32; acpi_gbl_integer_nybble_width = 8; acpi_gbl_integer_byte_width = 4; - } - else { + } else { acpi_gbl_integer_bit_width = 64; acpi_gbl_integer_nybble_width = 16; acpi_gbl_integer_byte_width = 8; } } - #ifdef ACPI_DEBUG_OUTPUT /******************************************************************************* * @@ -277,17 +350,14 @@ acpi_ut_set_integer_width ( ******************************************************************************/ void -acpi_ut_display_init_pathname ( - u8 type, - struct acpi_namespace_node *obj_handle, - char *path) +acpi_ut_display_init_pathname(u8 type, + struct acpi_namespace_node *obj_handle, + char *path) { - acpi_status status; - struct acpi_buffer buffer; - - - ACPI_FUNCTION_ENTRY (); + acpi_status status; + struct acpi_buffer buffer; + ACPI_FUNCTION_ENTRY(); /* Only print the path if the appropriate debug level is enabled */ @@ -298,8 +368,8 @@ acpi_ut_display_init_pathname ( /* Get the full pathname to the node */ buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; - status = acpi_ns_handle_to_pathname (obj_handle, &buffer); - if (ACPI_FAILURE (status)) { + status = acpi_ns_handle_to_pathname(obj_handle, &buffer); + if (ACPI_FAILURE(status)) { return; } @@ -307,31 +377,30 @@ acpi_ut_display_init_pathname ( switch (type) { case ACPI_TYPE_METHOD: - acpi_os_printf ("Executing "); + acpi_os_printf("Executing "); break; default: - acpi_os_printf ("Initializing "); + acpi_os_printf("Initializing "); break; } /* Print the object type and pathname */ - acpi_os_printf ("%-12s %s", - acpi_ut_get_type_name (type), (char *) buffer.pointer); + acpi_os_printf("%-12s %s", + acpi_ut_get_type_name(type), (char *)buffer.pointer); /* Extra path is used to append names like _STA, _INI, etc. */ if (path) { - acpi_os_printf (".%s", path); + acpi_os_printf(".%s", path); } - acpi_os_printf ("\n"); + acpi_os_printf("\n"); - ACPI_MEM_FREE (buffer.pointer); + ACPI_MEM_FREE(buffer.pointer); } #endif - /******************************************************************************* * * FUNCTION: acpi_ut_valid_acpi_name @@ -347,25 +416,21 @@ acpi_ut_display_init_pathname ( * ******************************************************************************/ -u8 -acpi_ut_valid_acpi_name ( - u32 name) +u8 acpi_ut_valid_acpi_name(u32 name) { - char *name_ptr = (char *) &name; - char character; - acpi_native_uint i; - - - ACPI_FUNCTION_ENTRY (); + char *name_ptr = (char *)&name; + char character; + acpi_native_uint i; + ACPI_FUNCTION_ENTRY(); for (i = 0; i < ACPI_NAME_SIZE; i++) { character = *name_ptr; name_ptr++; if (!((character == '_') || - (character >= 'A' && character <= 'Z') || - (character >= '0' && character <= '9'))) { + (character >= 'A' && character <= 'Z') || + (character >= '0' && character <= '9'))) { return (FALSE); } } @@ -373,7 +438,6 @@ acpi_ut_valid_acpi_name ( return (TRUE); } - /******************************************************************************* * * FUNCTION: acpi_ut_valid_acpi_character @@ -386,19 +450,16 @@ acpi_ut_valid_acpi_name ( * ******************************************************************************/ -u8 -acpi_ut_valid_acpi_character ( - char character) +u8 acpi_ut_valid_acpi_character(char character) { - ACPI_FUNCTION_ENTRY (); + ACPI_FUNCTION_ENTRY(); - return ((u8) ((character == '_') || - (character >= 'A' && character <= 'Z') || - (character >= '0' && character <= '9'))); + return ((u8) ((character == '_') || + (character >= 'A' && character <= 'Z') || + (character >= '0' && character <= '9'))); } - /******************************************************************************* * * FUNCTION: acpi_ut_strtoul64 @@ -415,18 +476,13 @@ acpi_ut_valid_acpi_character ( ******************************************************************************/ acpi_status -acpi_ut_strtoul64 ( - char *string, - u32 base, - acpi_integer *ret_integer) +acpi_ut_strtoul64(char *string, u32 base, acpi_integer * ret_integer) { - u32 this_digit = 0; - acpi_integer return_value = 0; - acpi_integer quotient; - - - ACPI_FUNCTION_TRACE ("ut_stroul64"); + u32 this_digit = 0; + acpi_integer return_value = 0; + acpi_integer quotient; + ACPI_FUNCTION_TRACE("ut_stroul64"); if ((!string) || !(*string)) { goto error_exit; @@ -440,12 +496,12 @@ acpi_ut_strtoul64 ( default: /* Invalid Base */ - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Skip over any white space in the buffer */ - while (ACPI_IS_SPACE (*string) || *string == '\t') { + while (ACPI_IS_SPACE(*string) || *string == '\t') { string++; } @@ -454,12 +510,10 @@ acpi_ut_strtoul64 ( * determine if it is decimal or hexadecimal: */ if (base == 0) { - if ((*string == '0') && - (ACPI_TOLOWER (*(string + 1)) == 'x')) { + if ((*string == '0') && (ACPI_TOLOWER(*(string + 1)) == 'x')) { base = 16; string += 2; - } - else { + } else { base = 10; } } @@ -469,8 +523,7 @@ acpi_ut_strtoul64 ( * 0 or 0x, if they are present. */ if ((base == 16) && - (*string == '0') && - (ACPI_TOLOWER (*(string + 1)) == 'x')) { + (*string == '0') && (ACPI_TOLOWER(*(string + 1)) == 'x')) { string += 2; } @@ -483,25 +536,23 @@ acpi_ut_strtoul64 ( /* Main loop: convert the string to a 64-bit integer */ while (*string) { - if (ACPI_IS_DIGIT (*string)) { + if (ACPI_IS_DIGIT(*string)) { /* Convert ASCII 0-9 to Decimal value */ - this_digit = ((u8) *string) - '0'; - } - else { + this_digit = ((u8) * string) - '0'; + } else { if (base == 10) { /* Digit is out of range */ goto error_exit; } - this_digit = (u8) ACPI_TOUPPER (*string); - if (ACPI_IS_XDIGIT ((char) this_digit)) { + this_digit = (u8) ACPI_TOUPPER(*string); + if (ACPI_IS_XDIGIT((char)this_digit)) { /* Convert ASCII Hex char to value */ this_digit = this_digit - 'A' + 10; - } - else { + } else { /* * We allow non-hex chars, just stop now, same as end-of-string. * See ACPI spec, string-to-integer conversion. @@ -512,8 +563,10 @@ acpi_ut_strtoul64 ( /* Divide the digit into the correct position */ - (void) acpi_ut_short_divide ((ACPI_INTEGER_MAX - (acpi_integer) this_digit), - base, "ient, NULL); + (void) + acpi_ut_short_divide((ACPI_INTEGER_MAX - + (acpi_integer) this_digit), base, + "ient, NULL); if (return_value > quotient) { goto error_exit; } @@ -526,335 +579,18 @@ acpi_ut_strtoul64 ( /* All done, normal exit */ *ret_integer = return_value; - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); - -error_exit: + error_exit: /* Base was set/validated above */ if (base == 10) { - return_ACPI_STATUS (AE_BAD_DECIMAL_CONSTANT); - } - else { - return_ACPI_STATUS (AE_BAD_HEX_CONSTANT); - } -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_mutex_initialize - * - * PARAMETERS: None. - * - * RETURN: Status - * - * DESCRIPTION: Create the system mutex objects. - * - ******************************************************************************/ - -acpi_status -acpi_ut_mutex_initialize ( - void) -{ - u32 i; - acpi_status status; - - - ACPI_FUNCTION_TRACE ("ut_mutex_initialize"); - - - /* - * Create each of the predefined mutex objects - */ - for (i = 0; i < NUM_MUTEX; i++) { - status = acpi_ut_create_mutex (i); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); - } - } - - status = acpi_os_create_lock (&acpi_gbl_gpe_lock); - return_ACPI_STATUS (status); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_mutex_terminate - * - * PARAMETERS: None. - * - * RETURN: None. - * - * DESCRIPTION: Delete all of the system mutex objects. - * - ******************************************************************************/ - -void -acpi_ut_mutex_terminate ( - void) -{ - u32 i; - - - ACPI_FUNCTION_TRACE ("ut_mutex_terminate"); - - - /* - * Delete each predefined mutex object - */ - for (i = 0; i < NUM_MUTEX; i++) { - (void) acpi_ut_delete_mutex (i); - } - - acpi_os_delete_lock (acpi_gbl_gpe_lock); - return_VOID; -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_create_mutex - * - * PARAMETERS: mutex_iD - ID of the mutex to be created - * - * RETURN: Status - * - * DESCRIPTION: Create a mutex object. - * - ******************************************************************************/ - -static acpi_status -acpi_ut_create_mutex ( - acpi_mutex_handle mutex_id) -{ - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE_U32 ("ut_create_mutex", mutex_id); - - - if (mutex_id > MAX_MUTEX) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT); + } else { + return_ACPI_STATUS(AE_BAD_HEX_CONSTANT); } - - if (!acpi_gbl_mutex_info[mutex_id].mutex) { - status = acpi_os_create_semaphore (1, 1, - &acpi_gbl_mutex_info[mutex_id].mutex); - acpi_gbl_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED; - acpi_gbl_mutex_info[mutex_id].use_count = 0; - } - - return_ACPI_STATUS (status); } - -/******************************************************************************* - * - * FUNCTION: acpi_ut_delete_mutex - * - * PARAMETERS: mutex_iD - ID of the mutex to be deleted - * - * RETURN: Status - * - * DESCRIPTION: Delete a mutex object. - * - ******************************************************************************/ - -static acpi_status -acpi_ut_delete_mutex ( - acpi_mutex_handle mutex_id) -{ - acpi_status status; - - - ACPI_FUNCTION_TRACE_U32 ("ut_delete_mutex", mutex_id); - - - if (mutex_id > MAX_MUTEX) { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - status = acpi_os_delete_semaphore (acpi_gbl_mutex_info[mutex_id].mutex); - - acpi_gbl_mutex_info[mutex_id].mutex = NULL; - acpi_gbl_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED; - - return_ACPI_STATUS (status); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_acquire_mutex - * - * PARAMETERS: mutex_iD - ID of the mutex to be acquired - * - * RETURN: Status - * - * DESCRIPTION: Acquire a mutex object. - * - ******************************************************************************/ - -acpi_status -acpi_ut_acquire_mutex ( - acpi_mutex_handle mutex_id) -{ - acpi_status status; - u32 this_thread_id; - - - ACPI_FUNCTION_NAME ("ut_acquire_mutex"); - - - if (mutex_id > MAX_MUTEX) { - return (AE_BAD_PARAMETER); - } - - this_thread_id = acpi_os_get_thread_id (); - -#ifdef ACPI_MUTEX_DEBUG - { - u32 i; - /* - * Mutex debug code, for internal debugging only. - * - * Deadlock prevention. Check if this thread owns any mutexes of value - * greater than or equal to this one. If so, the thread has violated - * the mutex ordering rule. This indicates a coding error somewhere in - * the ACPI subsystem code. - */ - for (i = mutex_id; i < MAX_MUTEX; i++) { - if (acpi_gbl_mutex_info[i].owner_id == this_thread_id) { - if (i == mutex_id) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Mutex [%s] already acquired by this thread [%X]\n", - acpi_ut_get_mutex_name (mutex_id), this_thread_id)); - - return (AE_ALREADY_ACQUIRED); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Invalid acquire order: Thread %X owns [%s], wants [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (i), - acpi_ut_get_mutex_name (mutex_id))); - - return (AE_ACQUIRE_DEADLOCK); - } - } - } -#endif - - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, - "Thread %X attempting to acquire Mutex [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id))); - - status = acpi_os_wait_semaphore (acpi_gbl_mutex_info[mutex_id].mutex, - 1, ACPI_WAIT_FOREVER); - if (ACPI_SUCCESS (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X acquired Mutex [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id))); - - acpi_gbl_mutex_info[mutex_id].use_count++; - acpi_gbl_mutex_info[mutex_id].owner_id = this_thread_id; - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Thread %X could not acquire Mutex [%s] %s\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id), - acpi_format_exception (status))); - } - - return (status); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_release_mutex - * - * PARAMETERS: mutex_iD - ID of the mutex to be released - * - * RETURN: Status - * - * DESCRIPTION: Release a mutex object. - * - ******************************************************************************/ - -acpi_status -acpi_ut_release_mutex ( - acpi_mutex_handle mutex_id) -{ - acpi_status status; - u32 i; - u32 this_thread_id; - - - ACPI_FUNCTION_NAME ("ut_release_mutex"); - - - this_thread_id = acpi_os_get_thread_id (); - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, - "Thread %X releasing Mutex [%s]\n", this_thread_id, - acpi_ut_get_mutex_name (mutex_id))); - - if (mutex_id > MAX_MUTEX) { - return (AE_BAD_PARAMETER); - } - - /* - * Mutex must be acquired in order to release it! - */ - if (acpi_gbl_mutex_info[mutex_id].owner_id == ACPI_MUTEX_NOT_ACQUIRED) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Mutex [%s] is not acquired, cannot release\n", - acpi_ut_get_mutex_name (mutex_id))); - - return (AE_NOT_ACQUIRED); - } - - /* - * Deadlock prevention. Check if this thread owns any mutexes of value - * greater than this one. If so, the thread has violated the mutex - * ordering rule. This indicates a coding error somewhere in - * the ACPI subsystem code. - */ - for (i = mutex_id; i < MAX_MUTEX; i++) { - if (acpi_gbl_mutex_info[i].owner_id == this_thread_id) { - if (i == mutex_id) { - continue; - } - - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Invalid release order: owns [%s], releasing [%s]\n", - acpi_ut_get_mutex_name (i), acpi_ut_get_mutex_name (mutex_id))); - - return (AE_RELEASE_DEADLOCK); - } - } - - /* Mark unlocked FIRST */ - - acpi_gbl_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED; - - status = acpi_os_signal_semaphore (acpi_gbl_mutex_info[mutex_id].mutex, 1); - - if (ACPI_FAILURE (status)) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Thread %X could not release Mutex [%s] %s\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id), - acpi_format_exception (status))); - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %X released Mutex [%s]\n", - this_thread_id, acpi_ut_get_mutex_name (mutex_id))); - } - - return (status); -} - - /******************************************************************************* * * FUNCTION: acpi_ut_create_update_state_and_push @@ -870,16 +606,13 @@ acpi_ut_release_mutex ( ******************************************************************************/ acpi_status -acpi_ut_create_update_state_and_push ( - union acpi_operand_object *object, - u16 action, - union acpi_generic_state **state_list) +acpi_ut_create_update_state_and_push(union acpi_operand_object *object, + u16 action, + union acpi_generic_state **state_list) { - union acpi_generic_state *state; - - - ACPI_FUNCTION_ENTRY (); + union acpi_generic_state *state; + ACPI_FUNCTION_ENTRY(); /* Ignore null objects; these are expected */ @@ -887,371 +620,15 @@ acpi_ut_create_update_state_and_push ( return (AE_OK); } - state = acpi_ut_create_update_state (object, action); + state = acpi_ut_create_update_state(object, action); if (!state) { return (AE_NO_MEMORY); } - acpi_ut_push_generic_state (state_list, state); + acpi_ut_push_generic_state(state_list, state); return (AE_OK); } - -/******************************************************************************* - * - * FUNCTION: acpi_ut_create_pkg_state_and_push - * - * PARAMETERS: Object - Object to be added to the new state - * Action - Increment/Decrement - * state_list - List the state will be added to - * - * RETURN: Status - * - * DESCRIPTION: Create a new state and push it - * - ******************************************************************************/ - -#ifdef ACPI_FUTURE_USAGE -acpi_status -acpi_ut_create_pkg_state_and_push ( - void *internal_object, - void *external_object, - u16 index, - union acpi_generic_state **state_list) -{ - union acpi_generic_state *state; - - - ACPI_FUNCTION_ENTRY (); - - - state = acpi_ut_create_pkg_state (internal_object, external_object, index); - if (!state) { - return (AE_NO_MEMORY); - } - - acpi_ut_push_generic_state (state_list, state); - return (AE_OK); -} -#endif /* ACPI_FUTURE_USAGE */ - -/******************************************************************************* - * - * FUNCTION: acpi_ut_push_generic_state - * - * PARAMETERS: list_head - Head of the state stack - * State - State object to push - * - * RETURN: None - * - * DESCRIPTION: Push a state object onto a state stack - * - ******************************************************************************/ - -void -acpi_ut_push_generic_state ( - union acpi_generic_state **list_head, - union acpi_generic_state *state) -{ - ACPI_FUNCTION_TRACE ("ut_push_generic_state"); - - - /* Push the state object onto the front of the list (stack) */ - - state->common.next = *list_head; - *list_head = state; - - return_VOID; -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_pop_generic_state - * - * PARAMETERS: list_head - Head of the state stack - * - * RETURN: The popped state object - * - * DESCRIPTION: Pop a state object from a state stack - * - ******************************************************************************/ - -union acpi_generic_state * -acpi_ut_pop_generic_state ( - union acpi_generic_state **list_head) -{ - union acpi_generic_state *state; - - - ACPI_FUNCTION_TRACE ("ut_pop_generic_state"); - - - /* Remove the state object at the head of the list (stack) */ - - state = *list_head; - if (state) { - /* Update the list head */ - - *list_head = state->common.next; - } - - return_PTR (state); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_create_generic_state - * - * PARAMETERS: None - * - * RETURN: The new state object. NULL on failure. - * - * DESCRIPTION: Create a generic state object. Attempt to obtain one from - * the global state cache; If none available, create a new one. - * - ******************************************************************************/ - -union acpi_generic_state * -acpi_ut_create_generic_state ( - void) -{ - union acpi_generic_state *state; - - - ACPI_FUNCTION_ENTRY (); - - - state = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_STATE); - - /* Initialize */ - - if (state) { - state->common.data_type = ACPI_DESC_TYPE_STATE; - } - - return (state); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_create_thread_state - * - * PARAMETERS: None - * - * RETURN: New Thread State. NULL on failure - * - * DESCRIPTION: Create a "Thread State" - a flavor of the generic state used - * to track per-thread info during method execution - * - ******************************************************************************/ - -struct acpi_thread_state * -acpi_ut_create_thread_state ( - void) -{ - union acpi_generic_state *state; - - - ACPI_FUNCTION_TRACE ("ut_create_thread_state"); - - - /* Create the generic state object */ - - state = acpi_ut_create_generic_state (); - if (!state) { - return_PTR (NULL); - } - - /* Init fields specific to the update struct */ - - state->common.data_type = ACPI_DESC_TYPE_STATE_THREAD; - state->thread.thread_id = acpi_os_get_thread_id (); - - return_PTR ((struct acpi_thread_state *) state); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_create_update_state - * - * PARAMETERS: Object - Initial Object to be installed in the state - * Action - Update action to be performed - * - * RETURN: New state object, null on failure - * - * DESCRIPTION: Create an "Update State" - a flavor of the generic state used - * to update reference counts and delete complex objects such - * as packages. - * - ******************************************************************************/ - -union acpi_generic_state * -acpi_ut_create_update_state ( - union acpi_operand_object *object, - u16 action) -{ - union acpi_generic_state *state; - - - ACPI_FUNCTION_TRACE_PTR ("ut_create_update_state", object); - - - /* Create the generic state object */ - - state = acpi_ut_create_generic_state (); - if (!state) { - return_PTR (NULL); - } - - /* Init fields specific to the update struct */ - - state->common.data_type = ACPI_DESC_TYPE_STATE_UPDATE; - state->update.object = object; - state->update.value = action; - - return_PTR (state); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_create_pkg_state - * - * PARAMETERS: Object - Initial Object to be installed in the state - * Action - Update action to be performed - * - * RETURN: New state object, null on failure - * - * DESCRIPTION: Create a "Package State" - * - ******************************************************************************/ - -union acpi_generic_state * -acpi_ut_create_pkg_state ( - void *internal_object, - void *external_object, - u16 index) -{ - union acpi_generic_state *state; - - - ACPI_FUNCTION_TRACE_PTR ("ut_create_pkg_state", internal_object); - - - /* Create the generic state object */ - - state = acpi_ut_create_generic_state (); - if (!state) { - return_PTR (NULL); - } - - /* Init fields specific to the update struct */ - - state->common.data_type = ACPI_DESC_TYPE_STATE_PACKAGE; - state->pkg.source_object = (union acpi_operand_object *) internal_object; - state->pkg.dest_object = external_object; - state->pkg.index = index; - state->pkg.num_packages = 1; - - return_PTR (state); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_create_control_state - * - * PARAMETERS: None - * - * RETURN: New state object, null on failure - * - * DESCRIPTION: Create a "Control State" - a flavor of the generic state used - * to support nested IF/WHILE constructs in the AML. - * - ******************************************************************************/ - -union acpi_generic_state * -acpi_ut_create_control_state ( - void) -{ - union acpi_generic_state *state; - - - ACPI_FUNCTION_TRACE ("ut_create_control_state"); - - - /* Create the generic state object */ - - state = acpi_ut_create_generic_state (); - if (!state) { - return_PTR (NULL); - } - - /* Init fields specific to the control struct */ - - state->common.data_type = ACPI_DESC_TYPE_STATE_CONTROL; - state->common.state = ACPI_CONTROL_CONDITIONAL_EXECUTING; - - return_PTR (state); -} - - -/******************************************************************************* - * - * FUNCTION: acpi_ut_delete_generic_state - * - * PARAMETERS: State - The state object to be deleted - * - * RETURN: None - * - * DESCRIPTION: Put a state object back into the global state cache. The object - * is not actually freed at this time. - * - ******************************************************************************/ - -void -acpi_ut_delete_generic_state ( - union acpi_generic_state *state) -{ - ACPI_FUNCTION_TRACE ("ut_delete_generic_state"); - - - acpi_ut_release_to_cache (ACPI_MEM_LIST_STATE, state); - return_VOID; -} - - -#ifdef ACPI_ENABLE_OBJECT_CACHE -/******************************************************************************* - * - * FUNCTION: acpi_ut_delete_generic_state_cache - * - * PARAMETERS: None - * - * RETURN: None - * - * DESCRIPTION: Purge the global state object cache. Used during subsystem - * termination. - * - ******************************************************************************/ - -void -acpi_ut_delete_generic_state_cache ( - void) -{ - ACPI_FUNCTION_TRACE ("ut_delete_generic_state_cache"); - - - acpi_ut_delete_generic_cache (ACPI_MEM_LIST_STATE); - return_VOID; -} -#endif - - /******************************************************************************* * * FUNCTION: acpi_ut_walk_package_tree @@ -1268,33 +645,29 @@ acpi_ut_delete_generic_state_cache ( ******************************************************************************/ acpi_status -acpi_ut_walk_package_tree ( - union acpi_operand_object *source_object, - void *target_object, - acpi_pkg_callback walk_callback, - void *context) +acpi_ut_walk_package_tree(union acpi_operand_object * source_object, + void *target_object, + acpi_pkg_callback walk_callback, void *context) { - acpi_status status = AE_OK; - union acpi_generic_state *state_list = NULL; - union acpi_generic_state *state; - u32 this_index; - union acpi_operand_object *this_source_obj; - - - ACPI_FUNCTION_TRACE ("ut_walk_package_tree"); + acpi_status status = AE_OK; + union acpi_generic_state *state_list = NULL; + union acpi_generic_state *state; + u32 this_index; + union acpi_operand_object *this_source_obj; + ACPI_FUNCTION_TRACE("ut_walk_package_tree"); - state = acpi_ut_create_pkg_state (source_object, target_object, 0); + state = acpi_ut_create_pkg_state(source_object, target_object, 0); if (!state) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } while (state) { /* Get one element of the package */ - this_index = state->pkg.index; + this_index = state->pkg.index; this_source_obj = (union acpi_operand_object *) - state->pkg.source_object->package.elements[this_index]; + state->pkg.source_object->package.elements[this_index]; /* * Check for: @@ -1305,16 +678,20 @@ acpi_ut_walk_package_tree ( * case below. */ if ((!this_source_obj) || - (ACPI_GET_DESCRIPTOR_TYPE (this_source_obj) != ACPI_DESC_TYPE_OPERAND) || - (ACPI_GET_OBJECT_TYPE (this_source_obj) != ACPI_TYPE_PACKAGE)) { - status = walk_callback (ACPI_COPY_TYPE_SIMPLE, this_source_obj, - state, context); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + (ACPI_GET_DESCRIPTOR_TYPE(this_source_obj) != + ACPI_DESC_TYPE_OPERAND) + || (ACPI_GET_OBJECT_TYPE(this_source_obj) != + ACPI_TYPE_PACKAGE)) { + status = + walk_callback(ACPI_COPY_TYPE_SIMPLE, + this_source_obj, state, context); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } state->pkg.index++; - while (state->pkg.index >= state->pkg.source_object->package.count) { + while (state->pkg.index >= + state->pkg.source_object->package.count) { /* * We've handled all of the objects at this level, This means * that we have just completed a package. That package may @@ -1322,8 +699,8 @@ acpi_ut_walk_package_tree ( * * Delete this state and pop the previous state (package). */ - acpi_ut_delete_generic_state (state); - state = acpi_ut_pop_generic_state (&state_list); + acpi_ut_delete_generic_state(state); + state = acpi_ut_pop_generic_state(&state_list); /* Finished when there are no more states */ @@ -1333,7 +710,7 @@ acpi_ut_walk_package_tree ( * package just add the length of the package objects * and exit */ - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } /* @@ -1342,35 +719,35 @@ acpi_ut_walk_package_tree ( */ state->pkg.index++; } - } - else { + } else { /* This is a subobject of type package */ - status = walk_callback (ACPI_COPY_TYPE_PACKAGE, this_source_obj, - state, context); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = + walk_callback(ACPI_COPY_TYPE_PACKAGE, + this_source_obj, state, context); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* * Push the current state and create a new one * The callback above returned a new target package object. */ - acpi_ut_push_generic_state (&state_list, state); - state = acpi_ut_create_pkg_state (this_source_obj, - state->pkg.this_target_obj, 0); + acpi_ut_push_generic_state(&state_list, state); + state = acpi_ut_create_pkg_state(this_source_obj, + state->pkg. + this_target_obj, 0); if (!state) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } } } /* We should never get here */ - return_ACPI_STATUS (AE_AML_INTERNAL); + return_ACPI_STATUS(AE_AML_INTERNAL); } - /******************************************************************************* * * FUNCTION: acpi_ut_generate_checksum @@ -1384,23 +761,18 @@ acpi_ut_walk_package_tree ( * ******************************************************************************/ -u8 -acpi_ut_generate_checksum ( - u8 *buffer, - u32 length) +u8 acpi_ut_generate_checksum(u8 * buffer, u32 length) { - u32 i; - signed char sum = 0; - + u32 i; + signed char sum = 0; for (i = 0; i < length; i++) { - sum = (signed char) (sum + buffer[i]); + sum = (signed char)(sum + buffer[i]); } return ((u8) (0 - sum)); } - /******************************************************************************* * * FUNCTION: acpi_ut_get_resource_end_tag @@ -1413,17 +785,13 @@ acpi_ut_generate_checksum ( * ******************************************************************************/ - -u8 * -acpi_ut_get_resource_end_tag ( - union acpi_operand_object *obj_desc) +u8 *acpi_ut_get_resource_end_tag(union acpi_operand_object * obj_desc) { - u8 buffer_byte; - u8 *buffer; - u8 *end_buffer; - + u8 buffer_byte; + u8 *buffer; + u8 *end_buffer; - buffer = obj_desc->buffer.pointer; + buffer = obj_desc->buffer.pointer; end_buffer = buffer + obj_desc->buffer.length; while (buffer < end_buffer) { @@ -1431,12 +799,12 @@ acpi_ut_get_resource_end_tag ( if (buffer_byte & ACPI_RDESC_TYPE_MASK) { /* Large Descriptor - Length is next 2 bytes */ - buffer += ((*(buffer+1) | (*(buffer+2) << 8)) + 3); - } - else { + buffer += ((*(buffer + 1) | (*(buffer + 2) << 8)) + 3); + } else { /* Small Descriptor. End Tag will be found here */ - if ((buffer_byte & ACPI_RDESC_SMALL_MASK) == ACPI_RDESC_TYPE_END_TAG) { + if ((buffer_byte & ACPI_RDESC_SMALL_MASK) == + ACPI_RDESC_TYPE_END_TAG) { /* Found the end tag descriptor, all done. */ return (buffer); @@ -1453,7 +821,6 @@ acpi_ut_get_resource_end_tag ( return (NULL); } - /******************************************************************************* * * FUNCTION: acpi_ut_report_error @@ -1468,17 +835,12 @@ acpi_ut_get_resource_end_tag ( * ******************************************************************************/ -void -acpi_ut_report_error ( - char *module_name, - u32 line_number, - u32 component_id) +void acpi_ut_report_error(char *module_name, u32 line_number, u32 component_id) { - acpi_os_printf ("%8s-%04d: *** Error: ", module_name, line_number); + acpi_os_printf("%8s-%04d: *** Error: ", module_name, line_number); } - /******************************************************************************* * * FUNCTION: acpi_ut_report_warning @@ -1494,16 +856,12 @@ acpi_ut_report_error ( ******************************************************************************/ void -acpi_ut_report_warning ( - char *module_name, - u32 line_number, - u32 component_id) +acpi_ut_report_warning(char *module_name, u32 line_number, u32 component_id) { - acpi_os_printf ("%8s-%04d: *** Warning: ", module_name, line_number); + acpi_os_printf("%8s-%04d: *** Warning: ", module_name, line_number); } - /******************************************************************************* * * FUNCTION: acpi_ut_report_info @@ -1518,14 +876,8 @@ acpi_ut_report_warning ( * ******************************************************************************/ -void -acpi_ut_report_info ( - char *module_name, - u32 line_number, - u32 component_id) +void acpi_ut_report_info(char *module_name, u32 line_number, u32 component_id) { - acpi_os_printf ("%8s-%04d: *** Info: ", module_name, line_number); + acpi_os_printf("%8s-%04d: *** Info: ", module_name, line_number); } - - |