Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
new file mode 100644
index 0000000..f659854
--- /dev/null
+++ b/drivers/acpi/utilities/utmisc.c
@@ -0,0 +1,1516 @@
+/*******************************************************************************
+ *
+ * Module Name: utmisc - common utility procedures
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acnamesp.h>
+
+
+#define _COMPONENT ACPI_UTILITIES
+ ACPI_MODULE_NAME ("utmisc")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_print_string
+ *
+ * PARAMETERS: String - Null terminated ASCII string
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
+ * sequences.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_print_string (
+ char *string,
+ u8 max_length)
+{
+ u32 i;
+
+
+ if (!string) {
+ acpi_os_printf ("<\"NULL STRING PTR\">");
+ return;
+ }
+
+ acpi_os_printf ("\"");
+ for (i = 0; string[i] && (i < max_length); i++) {
+ /* Escape sequences */
+
+ switch (string[i]) {
+ case 0x07:
+ acpi_os_printf ("\\a"); /* BELL */
+ break;
+
+ case 0x08:
+ acpi_os_printf ("\\b"); /* BACKSPACE */
+ break;
+
+ case 0x0C:
+ acpi_os_printf ("\\f"); /* FORMFEED */
+ break;
+
+ case 0x0A:
+ acpi_os_printf ("\\n"); /* LINEFEED */
+ break;
+
+ case 0x0D:
+ acpi_os_printf ("\\r"); /* CARRIAGE RETURN*/
+ break;
+
+ case 0x09:
+ acpi_os_printf ("\\t"); /* HORIZONTAL TAB */
+ break;
+
+ case 0x0B:
+ acpi_os_printf ("\\v"); /* VERTICAL TAB */
+ break;
+
+ 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]))
+ {
+ /* This is a normal character */
+
+ acpi_os_printf ("%c", (int) string[i]);
+ }
+ else
+ {
+ /* All others will be Hex escapes */
+
+ acpi_os_printf ("\\x%2.2X", (s32) string[i]);
+ }
+ break;
+ }
+ }
+ acpi_os_printf ("\"");
+
+ if (i == max_length && string[i]) {
+ acpi_os_printf ("...");
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_dword_byte_swap
+ *
+ * PARAMETERS: Value - Value to be converted
+ *
+ * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
+ *
+ ******************************************************************************/
+
+u32
+acpi_ut_dword_byte_swap (
+ u32 value)
+{
+ union {
+ u32 value;
+ u8 bytes[4];
+ } out;
+
+ union {
+ u32 value;
+ u8 bytes[4];
+ } in;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ in.value = value;
+
+ out.bytes[0] = in.bytes[3];
+ out.bytes[1] = in.bytes[2];
+ out.bytes[2] = in.bytes[1];
+ out.bytes[3] = in.bytes[0];
+
+ return (out.value);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_set_integer_width
+ *
+ * PARAMETERS: Revision From DSDT header
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Set the global integer bit width based upon the revision
+ * of the DSDT. For Revision 1 and 0, Integers are 32 bits.
+ * For Revision 2 and above, Integers are 64 bits. Yes, this
+ * makes a difference.
+ *
+ ******************************************************************************/
+
+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 {
+ acpi_gbl_integer_bit_width = 64;
+ acpi_gbl_integer_nybble_width = 16;
+ acpi_gbl_integer_byte_width = 8;
+ }
+}
+
+
+#ifdef ACPI_DEBUG_OUTPUT
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_display_init_pathname
+ *
+ * PARAMETERS: obj_handle - Handle whose pathname will be displayed
+ * Path - Additional path string to be appended.
+ * (NULL if no extra path)
+ *
+ * RETURN: acpi_status
+ *
+ * DESCRIPTION: Display full pathname of an object, DEBUG ONLY
+ *
+ ******************************************************************************/
+
+void
+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 ();
+
+
+ /* Only print the path if the appropriate debug level is enabled */
+
+ if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
+ return;
+ }
+
+ /* 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)) {
+ return;
+ }
+
+ /* Print what we're doing */
+
+ switch (type) {
+ case ACPI_TYPE_METHOD:
+ acpi_os_printf ("Executing ");
+ break;
+
+ default:
+ 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);
+
+ /* Extra path is used to append names like _STA, _INI, etc. */
+
+ if (path) {
+ acpi_os_printf (".%s", path);
+ }
+ acpi_os_printf ("\n");
+
+ ACPI_MEM_FREE (buffer.pointer);
+}
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_valid_acpi_name
+ *
+ * PARAMETERS: Character - The character to be examined
+ *
+ * RETURN: 1 if Character may appear in a name, else 0
+ *
+ * DESCRIPTION: Check for a valid ACPI name. Each character must be one of:
+ * 1) Upper case alpha
+ * 2) numeric
+ * 3) underscore
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_valid_acpi_name (
+ u32 name)
+{
+ 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'))) {
+ return (FALSE);
+ }
+ }
+
+ return (TRUE);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_valid_acpi_character
+ *
+ * PARAMETERS: Character - The character to be examined
+ *
+ * RETURN: 1 if Character may appear in a name, else 0
+ *
+ * DESCRIPTION: Check for a printable character
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_valid_acpi_character (
+ char character)
+{
+
+ ACPI_FUNCTION_ENTRY ();
+
+ return ((u8) ((character == '_') ||
+ (character >= 'A' && character <= 'Z') ||
+ (character >= '0' && character <= '9')));
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_strtoul64
+ *
+ * PARAMETERS: String - Null terminated string
+ * Base - Radix of the string: 10, 16, or ACPI_ANY_BASE
+ * ret_integer - Where the converted integer is returned
+ *
+ * RETURN: Status and Converted value
+ *
+ * DESCRIPTION: Convert a string into an unsigned value.
+ * NOTE: Does not support Octal strings, not needed.
+ *
+ ******************************************************************************/
+
+acpi_status
+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");
+
+
+ if ((!string) || !(*string)) {
+ goto error_exit;
+ }
+
+ switch (base) {
+ case ACPI_ANY_BASE:
+ case 10:
+ case 16:
+ break;
+
+ default:
+ /* Invalid Base */
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /* Skip over any white space in the buffer */
+
+ while (ACPI_IS_SPACE (*string) || *string == '\t') {
+ string++;
+ }
+
+ /*
+ * If the input parameter Base is zero, then we need to
+ * determine if it is decimal or hexadecimal:
+ */
+ if (base == 0) {
+ if ((*string == '0') &&
+ (ACPI_TOLOWER (*(string + 1)) == 'x')) {
+ base = 16;
+ string += 2;
+ }
+ else {
+ base = 10;
+ }
+ }
+
+ /*
+ * For hexadecimal base, skip over the leading
+ * 0 or 0x, if they are present.
+ */
+ if ((base == 16) &&
+ (*string == '0') &&
+ (ACPI_TOLOWER (*(string + 1)) == 'x')) {
+ string += 2;
+ }
+
+ /* Any string left? */
+
+ if (!(*string)) {
+ goto error_exit;
+ }
+
+ /* Main loop: convert the string to a 64-bit integer */
+
+ while (*string) {
+ if (ACPI_IS_DIGIT (*string)) {
+ /* Convert ASCII 0-9 to Decimal value */
+
+ 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)) {
+ /* Convert ASCII Hex char to value */
+
+ this_digit = this_digit - 'A' + 10;
+ }
+ else {
+ /*
+ * We allow non-hex chars, just stop now, same as end-of-string.
+ * See ACPI spec, string-to-integer conversion.
+ */
+ break;
+ }
+ }
+
+ /* Divide the digit into the correct position */
+
+ (void) acpi_ut_short_divide ((ACPI_INTEGER_MAX - (acpi_integer) this_digit),
+ base, "ient, NULL);
+ if (return_value > quotient) {
+ goto error_exit;
+ }
+
+ return_value *= base;
+ return_value += this_digit;
+ string++;
+ }
+
+ /* All done, normal exit */
+
+ *ret_integer = return_value;
+ return_ACPI_STATUS (AE_OK);
+
+
+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_strupr
+ *
+ * PARAMETERS: src_string - The source string to convert to
+ *
+ * RETURN: src_string
+ *
+ * DESCRIPTION: Convert string to uppercase
+ *
+ ******************************************************************************/
+#ifdef ACPI_FUTURE_USAGE
+char *
+acpi_ut_strupr (
+ char *src_string)
+{
+ char *string;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ /* Walk entire string, uppercasing the letters */
+
+ for (string = src_string; *string; ) {
+ *string = (char) ACPI_TOUPPER (*string);
+ string++;
+ }
+
+ return (src_string);
+}
+#endif /* ACPI_FUTURE_USAGE */
+
+
+/*******************************************************************************
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+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);
+ }
+
+ 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.
+ *
+ ******************************************************************************/
+
+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
+ *
+ * PARAMETERS: *Object - Object to be added to the new state
+ * Action - Increment/Decrement
+ * state_list - List the state will be added to
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Create a new state and push it
+ *
+ ******************************************************************************/
+
+acpi_status
+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 ();
+
+
+ /* Ignore null objects; these are expected */
+
+ if (!object) {
+ return (AE_OK);
+ }
+
+ state = acpi_ut_create_update_state (object, action);
+ if (!state) {
+ return (AE_NO_MEMORY);
+ }
+
+ 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: None
+ *
+ * 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: Status
+ *
+ * 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: Status
+ *
+ * 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: Status
+ *
+ * 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: Thread State
+ *
+ * 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: Status
+ *
+ * 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: Status
+ *
+ * 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: Status
+ *
+ * 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: Status
+ *
+ * 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: Status
+ *
+ * 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
+ *
+ * PARAMETERS: obj_desc - The Package object on which to resolve refs
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Walk through a package
+ *
+ ******************************************************************************/
+
+acpi_status
+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");
+
+
+ state = acpi_ut_create_pkg_state (source_object, target_object, 0);
+ if (!state) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ while (state) {
+ /* Get one element of the package */
+
+ this_index = state->pkg.index;
+ this_source_obj = (union acpi_operand_object *)
+ state->pkg.source_object->package.elements[this_index];
+
+ /*
+ * Check for:
+ * 1) An uninitialized package element. It is completely
+ * legal to declare a package and leave it uninitialized
+ * 2) Not an internal object - can be a namespace node instead
+ * 3) Any type other than a package. Packages are handled in else
+ * 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);
+ }
+
+ state->pkg.index++;
+ 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
+ * have contained one or more packages itself.
+ *
+ * Delete this state and pop the previous state (package).
+ */
+ acpi_ut_delete_generic_state (state);
+ state = acpi_ut_pop_generic_state (&state_list);
+
+ /* Finished when there are no more states */
+
+ if (!state) {
+ /*
+ * We have handled all of the objects in the top level
+ * package just add the length of the package objects
+ * and exit
+ */
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /*
+ * Go back up a level and move the index past the just
+ * completed package object.
+ */
+ state->pkg.index++;
+ }
+ }
+ 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);
+ }
+
+ /*
+ * 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);
+ if (!state) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+ }
+ }
+
+ /* We should never get here */
+
+ return_ACPI_STATUS (AE_AML_INTERNAL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_generate_checksum
+ *
+ * PARAMETERS: Buffer - Buffer to be scanned
+ * Length - number of bytes to examine
+ *
+ * RETURN: checksum
+ *
+ * DESCRIPTION: Generate a checksum on a raw buffer
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_generate_checksum (
+ u8 *buffer,
+ u32 length)
+{
+ u32 i;
+ signed char sum = 0;
+
+
+ for (i = 0; i < length; i++) {
+ sum = (signed char) (sum + buffer[i]);
+ }
+
+ return ((u8) (0 - sum));
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_get_resource_end_tag
+ *
+ * PARAMETERS: obj_desc - The resource template buffer object
+ *
+ * RETURN: Pointer to the end tag
+ *
+ * DESCRIPTION: Find the END_TAG resource descriptor in a resource template
+ *
+ ******************************************************************************/
+
+
+u8 *
+acpi_ut_get_resource_end_tag (
+ union acpi_operand_object *obj_desc)
+{
+ u8 buffer_byte;
+ u8 *buffer;
+ u8 *end_buffer;
+
+
+ buffer = obj_desc->buffer.pointer;
+ end_buffer = buffer + obj_desc->buffer.length;
+
+ while (buffer < end_buffer) {
+ buffer_byte = *buffer;
+ if (buffer_byte & ACPI_RDESC_TYPE_MASK) {
+ /* Large Descriptor - Length is next 2 bytes */
+
+ 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) {
+ /* Found the end tag descriptor, all done. */
+
+ return (buffer);
+ }
+
+ /* Length is in the header */
+
+ buffer += ((buffer_byte & 0x07) + 1);
+ }
+ }
+
+ /* End tag not found */
+
+ return (NULL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_report_error
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * component_id - Caller's component ID (for error output)
+ * Message - Error message to use on failure
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print error message
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_report_error (
+ char *module_name,
+ u32 line_number,
+ u32 component_id)
+{
+
+
+ acpi_os_printf ("%8s-%04d: *** Error: ", module_name, line_number);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_report_warning
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * component_id - Caller's component ID (for error output)
+ * Message - Error message to use on failure
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print warning message
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_report_warning (
+ char *module_name,
+ u32 line_number,
+ u32 component_id)
+{
+
+ acpi_os_printf ("%8s-%04d: *** Warning: ", module_name, line_number);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_report_info
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * component_id - Caller's component ID (for error output)
+ * Message - Error message to use on failure
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print information message
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_report_info (
+ char *module_name,
+ u32 line_number,
+ u32 component_id)
+{
+
+ acpi_os_printf ("%8s-%04d: *** Info: ", module_name, line_number);
+}
+
+
