******************************************************************************/
/*
- * Copyright (C) 2000 - 2005, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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_native_uint j;
+ acpi_native_uint k;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE("ut_allocate_owner_id");
+
+ /* Guard against multiple allocations of ID to the same location */
+
+ if (*owner_id) {
+ ACPI_ERROR((AE_INFO, "Owner ID [%2.2X] already exists",
+ *owner_id));
+ return_ACPI_STATUS(AE_ALREADY_EXISTS);
+ }
+
+ /* Mutex for the global ID mask */
+
+ status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /*
+ * Find a free owner ID, cycle through all possible IDs on repeated
+ * allocations. (ACPI_NUM_OWNERID_MASKS + 1) because first index may have
+ * to be scanned twice.
+ */
+ for (i = 0, j = acpi_gbl_last_owner_id_index;
+ i < (ACPI_NUM_OWNERID_MASKS + 1); i++, j++) {
+ if (j >= ACPI_NUM_OWNERID_MASKS) {
+ j = 0; /* Wraparound to start of mask array */
+ }
+
+ for (k = acpi_gbl_next_owner_id_offset; k < 32; k++) {
+ if (acpi_gbl_owner_id_mask[j] == ACPI_UINT32_MAX) {
+ /* There are no free IDs in this mask */
+
+ break;
+ }
+
+ if (!(acpi_gbl_owner_id_mask[j] & (1 << k))) {
+ /*
+ * Found a free ID. The actual ID is the bit index plus one,
+ * making zero an invalid Owner ID. Save this as the last ID
+ * allocated and update the global ID mask.
+ */
+ acpi_gbl_owner_id_mask[j] |= (1 << k);
+
+ acpi_gbl_last_owner_id_index = (u8) j;
+ acpi_gbl_next_owner_id_offset = (u8) (k + 1);
+
+ /*
+ * Construct encoded ID from the index and bit position
+ *
+ * Note: Last [j].k (bit 255) is never used and is marked
+ * permanently allocated (prevents +1 overflow)
+ */
+ *owner_id =
+ (acpi_owner_id) ((k + 1) + ACPI_MUL_32(j));
+
+ ACPI_DEBUG_PRINT((ACPI_DB_VALUES,
+ "Allocated owner_id: %2.2X\n",
+ (unsigned int)*owner_id));
+ goto exit;
+ }
+ }
+
+ acpi_gbl_next_owner_id_offset = 0;
+ }
+
+ /*
+ * All owner_ids have been allocated. This typically 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.
+ *
+ * If this error happens, there may be very deep nesting of invoked control
+ * methods, or there may be a bug where the IDs are not released.
+ */
+ status = AE_OWNER_ID_LIMIT;
+ ACPI_ERROR((AE_INFO,
+ "Could not allocate new owner_id (255 max), AE_OWNER_ID_LIMIT"));
+
+ 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 - 255
+ *
+ ******************************************************************************/
+
+void acpi_ut_release_owner_id(acpi_owner_id * owner_id_ptr)
+{
+ acpi_owner_id owner_id = *owner_id_ptr;
+ acpi_status status;
+ acpi_native_uint index;
+ u32 bit;
+
+ ACPI_FUNCTION_TRACE_U32("ut_release_owner_id", 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) {
+ ACPI_ERROR((AE_INFO, "Invalid owner_id: %2.2X", owner_id));
+ return_VOID;
+ }
+
+ /* Mutex for the global ID mask */
+
+ status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
+ if (ACPI_FAILURE(status)) {
+ return_VOID;
+ }
+ /* Normalize the ID to zero */
+
+ owner_id--;
+
+ /* Decode ID to index/offset pair */
+
+ index = ACPI_DIV_32(owner_id);
+ bit = 1 << ACPI_MOD_32(owner_id);
+
+ /* Free the owner ID only if it is valid */
+
+ if (acpi_gbl_owner_id_mask[index] & bit) {
+ acpi_gbl_owner_id_mask[index] ^= bit;
+ } else {
+ ACPI_ERROR((AE_INFO,
+ "Release of non-allocated owner_id: %2.2X",
+ owner_id + 1));
+ }
+
+ (void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
+ return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_strupr (strupr)
+ *
+ * PARAMETERS: src_string - The source string to convert
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Convert string to uppercase
+ *
+ * NOTE: This is not a POSIX function, so it appears here, not in utclib.c
+ *
+ ******************************************************************************/
+
+void acpi_ut_strupr(char *src_string)
+{
+ char *string;
+
+ ACPI_FUNCTION_ENTRY();
+
+ if (!src_string) {
+ return;
+ }
+
+ /* Walk entire string, uppercasing the letters */
+
+ for (string = src_string; *string; string++) {
+ *string = (char)ACPI_TOUPPER(*string);
+ }
+
+ return;
+}
/*******************************************************************************
*
* FUNCTION: acpi_ut_print_string
*
* PARAMETERS: String - Null terminated ASCII string
+ * max_length - Maximum output length
*
* RETURN: None
*
*
******************************************************************************/
-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
*
* PARAMETERS: Value - Value to be converted
*
+ * RETURN: u32 integer with bytes swapped
+ *
* DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
*
******************************************************************************/
-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;
return (out.value);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ut_set_integer_width
*
******************************************************************************/
-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
/*******************************************************************************
*
* FUNCTION: acpi_ut_display_init_pathname
*
- * PARAMETERS: obj_handle - Handle whose pathname will be displayed
+ * PARAMETERS: Type - Object type of the node
+ * obj_handle - Handle whose pathname will be displayed
* Path - Additional path string to be appended.
* (NULL if no extra path)
*
******************************************************************************/
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 */
/* 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;
}
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
*
- * PARAMETERS: Character - The character to be examined
+ * PARAMETERS: Name - The name to be examined
*
- * RETURN: 1 if Character may appear in a name, else 0
+ * RETURN: TRUE if the name is valid, FALSE otherwise
*
* DESCRIPTION: Check for a valid ACPI name. Each character must be one of:
* 1) Upper case alpha
*
******************************************************************************/
-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);
}
}
return (TRUE);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_ut_valid_acpi_character
*
******************************************************************************/
-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
******************************************************************************/
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;
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++;
}
* 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;
}
}
* 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;
}
/* 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.
/* 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;
}
/* 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);
+ return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT);
+ } else {
+ return_ACPI_STATUS(AE_BAD_HEX_CONSTANT);
}
}
-
/*******************************************************************************
*
- * FUNCTION: acpi_ut_strupr
+ * FUNCTION: acpi_ut_create_update_state_and_push
*
- * PARAMETERS: src_string - The source string to convert to
+ * PARAMETERS: Object - Object to be added to the new state
+ * Action - Increment/Decrement
+ * state_list - List the state will be added to
*
- * RETURN: src_string
+ * RETURN: Status
*
- * DESCRIPTION: Convert string to uppercase
+ * DESCRIPTION: Create a new state and push it
*
******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
-char *
-acpi_ut_strupr (
- char *src_string)
-{
- char *string;
+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 ();
+ ACPI_FUNCTION_ENTRY();
+ /* Ignore null objects; these are expected */
- /* Walk entire string, uppercasing the letters */
+ if (!object) {
+ return (AE_OK);
+ }
- for (string = src_string; *string; ) {
- *string = (char) ACPI_TOUPPER (*string);
- string++;
+ state = acpi_ut_create_update_state(object, action);
+ if (!state) {
+ return (AE_NO_MEMORY);
}
- return (src_string);
+ acpi_ut_push_generic_state(state_list, state);
+ return (AE_OK);
}
-#endif /* ACPI_FUTURE_USAGE */
-
/*******************************************************************************
*
- * FUNCTION: acpi_ut_mutex_initialize
+ * FUNCTION: acpi_ut_walk_package_tree
*
- * PARAMETERS: None.
+ * PARAMETERS: source_object - The package to walk
+ * target_object - Target object (if package is being copied)
+ * walk_callback - Called once for each package element
+ * Context - Passed to the callback function
*
* RETURN: Status
*
- * DESCRIPTION: Create the system mutex objects.
+ * DESCRIPTION: Walk through a package
*
******************************************************************************/
acpi_status
-acpi_ut_mutex_initialize (
- void)
+acpi_ut_walk_package_tree(union acpi_operand_object * source_object,
+ void *target_object,
+ acpi_pkg_callback walk_callback, void *context)
{
- u32 i;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("ut_mutex_initialize");
+ 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");
- /*
- * 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);
- }
+ state = acpi_ut_create_pkg_state(source_object, target_object, 0);
+ if (!state) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
- status = acpi_os_create_lock (&acpi_gbl_gpe_lock);
- return_ACPI_STATUS (status);
-}
+ 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];
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_mutex_terminate
- *
- * PARAMETERS: None.
- *
- * RETURN: None.
- *
- * DESCRIPTION: Delete all of the system mutex objects.
- *
- ******************************************************************************/
+ /*
+ * 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);
+ }
-void
-acpi_ut_mutex_terminate (
- void)
-{
- u32 i;
+ 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);
+ }
- ACPI_FUNCTION_TRACE ("ut_mutex_terminate");
+ /*
+ * 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);
+ }
- /*
- * Delete each predefined mutex object
- */
- for (i = 0; i < NUM_MUTEX; i++) {
- (void) acpi_ut_delete_mutex (i);
+ /*
+ * 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);
+ }
+ }
}
- acpi_os_delete_lock (acpi_gbl_gpe_lock);
- return_VOID;
-}
+ /* We should never get here */
+ return_ACPI_STATUS(AE_AML_INTERNAL);
+}
/*******************************************************************************
*
- * FUNCTION: acpi_ut_create_mutex
+ * FUNCTION: acpi_ut_generate_checksum
*
- * PARAMETERS: mutex_iD - ID of the mutex to be created
+ * PARAMETERS: Buffer - Buffer to be scanned
+ * Length - number of bytes to examine
*
- * RETURN: Status
+ * RETURN: The generated checksum
*
- * DESCRIPTION: Create a mutex object.
+ * DESCRIPTION: Generate a checksum on a raw buffer
*
******************************************************************************/
-acpi_status
-acpi_ut_create_mutex (
- acpi_mutex_handle mutex_id)
+u8 acpi_ut_generate_checksum(u8 * buffer, u32 length)
{
- 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);
- }
+ u32 i;
+ signed char sum = 0;
- 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;
+ for (i = 0; i < length; i++) {
+ sum = (signed char)(sum + buffer[i]);
}
- return_ACPI_STATUS (status);
+ return ((u8) (0 - sum));
}
-
/*******************************************************************************
*
- * FUNCTION: acpi_ut_delete_mutex
+ * FUNCTION: acpi_ut_error, acpi_ut_warning, acpi_ut_info
*
- * PARAMETERS: mutex_iD - ID of the mutex to be deleted
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * Format - Printf format string + additional args
*
- * RETURN: Status
+ * RETURN: None
*
- * DESCRIPTION: Delete a mutex object.
+ * DESCRIPTION: Print message with module/line/version info
*
******************************************************************************/
-acpi_status
-acpi_ut_delete_mutex (
- acpi_mutex_handle mutex_id)
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_error(char *module_name, u32 line_number, char *format, ...)
{
- acpi_status status;
+ va_list args;
+ acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
- ACPI_FUNCTION_TRACE_U32 ("ut_delete_mutex", mutex_id);
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
+}
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_exception(char *module_name,
+ u32 line_number, acpi_status status, char *format, ...)
+{
+ va_list args;
+ acpi_os_printf("ACPI Exception (%s-%04d): %s, ", module_name,
+ line_number, acpi_format_exception(status));
- if (mutex_id > MAX_MUTEX) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
- }
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
+}
- status = acpi_os_delete_semaphore (acpi_gbl_mutex_info[mutex_id].mutex);
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_warning(char *module_name, u32 line_number, char *format, ...)
+{
+ va_list args;
- acpi_gbl_mutex_info[mutex_id].mutex = NULL;
- acpi_gbl_mutex_info[mutex_id].owner_id = ACPI_MUTEX_NOT_ACQUIRED;
+ acpi_os_printf("ACPI Warning (%s-%04d): ", module_name, line_number);
- return_ACPI_STATUS (status);
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
}
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_info(char *module_name, u32 line_number, char *format, ...)
+{
+ va_list args;
+
+ acpi_os_printf("ACPI (%s-%04d): ", module_name, line_number);
+
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
+}
/*******************************************************************************
*
- * FUNCTION: acpi_ut_acquire_mutex
+ * FUNCTION: acpi_ut_report_error, Warning, Info
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
*
- * PARAMETERS: mutex_iD - ID of the mutex to be acquired
+ * RETURN: None
*
- * RETURN: Status
+ * DESCRIPTION: Print error message
*
- * DESCRIPTION: Acquire a mutex object.
+ * Note: Legacy only, should be removed when no longer used by drivers.
*
******************************************************************************/
-acpi_status
-acpi_ut_acquire_mutex (
- acpi_mutex_handle mutex_id)
+void acpi_ut_report_error(char *module_name, u32 line_number)
{
- acpi_status status;
- u32 this_thread_id;
-
- ACPI_FUNCTION_NAME ("ut_acquire_mutex");
+ acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
+}
+void acpi_ut_report_warning(char *module_name, u32 line_number)
+{
- if (mutex_id > MAX_MUTEX) {
- return (AE_BAD_PARAMETER);
- }
+ acpi_os_printf("ACPI Warning (%s-%04d): ", module_name, line_number);
+}
- this_thread_id = acpi_os_get_thread_id ();
+void acpi_ut_report_info(char *module_name, u32 line_number)
+{
-#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);
+ acpi_os_printf("ACPI (%s-%04d): ", module_name, line_number);
}
-
-
-/*******************************************************************************
- *
- * 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);
-}
-
-
git://git.onelab.eu / linux-2.6.git / blobdiff