******************************************************************************/
/*
- * 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 <linux/module.h>
+
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utmisc")
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_is_aml_table
+ *
+ * PARAMETERS: Table - An ACPI table
+ *
+ * RETURN: TRUE if table contains executable AML; FALSE otherwise
+ *
+ * DESCRIPTION: Check ACPI Signature for a table that contains AML code.
+ * Currently, these are DSDT,SSDT,PSDT. All other table types are
+ * data tables that do not contain AML code.
+ *
+ ******************************************************************************/
+u8 acpi_ut_is_aml_table(struct acpi_table_header *table)
+{
+
+ /* Ignore tables that contain AML */
+
+ if (ACPI_COMPARE_NAME(table->signature, DSDT_SIG) ||
+ ACPI_COMPARE_NAME(table->signature, PSDT_SIG) ||
+ ACPI_COMPARE_NAME(table->signature, SSDT_SIG)) {
+ return (TRUE);
+ }
+
+ return (FALSE);
+}
+
/*******************************************************************************
*
* FUNCTION: acpi_ut_allocate_owner_id
* 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");
+ ACPI_FUNCTION_TRACE(ut_allocate_owner_id);
/* Guard against multiple allocations of ID to the same location */
if (*owner_id) {
- ACPI_REPORT_ERROR(("Owner ID [%2.2X] already exists\n",
- *owner_id));
+ ACPI_ERROR((AE_INFO, "Owner ID [%2.2X] already exists",
+ *owner_id));
return_ACPI_STATUS(AE_ALREADY_EXISTS);
}
return_ACPI_STATUS(status);
}
- /* Find a free owner ID */
+ /*
+ * 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 */
- for (i = 0; i < 64; i++) {
- if (!(acpi_gbl_owner_id_mask & (1ULL << i))) {
- ACPI_DEBUG_PRINT((ACPI_DB_VALUES,
- "Current owner_id mask: %16.16LX New ID: %2.2X\n",
- acpi_gbl_owner_id_mask,
- (unsigned int)(i + 1)));
+ break;
+ }
- acpi_gbl_owner_id_mask |= (1ULL << i);
- *owner_id = (acpi_owner_id) (i + 1);
- goto exit;
+ 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 OwnerId: %2.2X\n",
+ (unsigned int)*owner_id));
+ goto exit;
+ }
}
+
+ acpi_gbl_next_owner_id_offset = 0;
}
/*
- * If we are here, all owner_ids have been allocated. This probably should
+ * 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.
*/
- *owner_id = 0;
status = AE_OWNER_ID_LIMIT;
- ACPI_REPORT_ERROR(("Could not allocate new owner_id (64 max), AE_OWNER_ID_LIMIT\n"));
+ ACPI_ERROR((AE_INFO,
+ "Could not allocate new OwnerId (255 max), AE_OWNER_ID_LIMIT"));
exit:
(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
* 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 - 64
+ * DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 - 255
*
******************************************************************************/
{
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);
+ ACPI_FUNCTION_TRACE_U32(ut_release_owner_id, owner_id);
/* Always clear the input owner_id (zero is an invalid ID) */
/* Zero is not a valid owner_iD */
- if ((owner_id == 0) || (owner_id > 64)) {
- ACPI_REPORT_ERROR(("Invalid owner_id: %2.2X\n", owner_id));
+ if (owner_id == 0) {
+ ACPI_ERROR((AE_INFO, "Invalid OwnerId: %2.2X", owner_id));
return_VOID;
}
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 & (1ULL << owner_id)) {
- acpi_gbl_owner_id_mask ^= (1ULL << owner_id);
+ if (acpi_gbl_owner_id_mask[index] & bit) {
+ acpi_gbl_owner_id_mask[index] ^= bit;
+ } else {
+ ACPI_ERROR((AE_INFO,
+ "Release of non-allocated OwnerId: %2.2X",
+ owner_id + 1));
}
(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
acpi_os_printf("\"");
for (i = 0; string[i] && (i < max_length); i++) {
+
/* Escape sequences */
switch (string[i]) {
}
acpi_os_printf("\n");
- ACPI_MEM_FREE(buffer.pointer);
+ ACPI_FREE(buffer.pointer);
}
#endif
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_valid_acpi_char
+ *
+ * PARAMETERS: Char - The character to be examined
+ *
+ * RETURN: TRUE if the character is valid, FALSE otherwise
+ *
+ * DESCRIPTION: Check for a valid ACPI character. Must be one of:
+ * 1) Upper case alpha
+ * 2) numeric
+ * 3) underscore
+ *
+ * We allow a '!' as the last character because of the ASF! table
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_valid_acpi_char(char character, acpi_native_uint position)
+{
+
+ if (!((character >= 'A' && character <= 'Z') ||
+ (character >= '0' && character <= '9') || (character == '_'))) {
+
+ /* Allow a '!' in the last position */
+
+ if (character == '!' && position == 3) {
+ return (TRUE);
+ }
+
+ return (FALSE);
+ }
+
+ return (TRUE);
+}
+
/*******************************************************************************
*
* FUNCTION: acpi_ut_valid_acpi_name
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'))) {
+ if (!acpi_ut_valid_acpi_char
+ ((ACPI_CAST_PTR(char, &name))[i], i)) {
return (FALSE);
}
}
/*******************************************************************************
*
- * FUNCTION: acpi_ut_valid_acpi_character
+ * FUNCTION: acpi_ut_repair_name
*
- * PARAMETERS: Character - The character to be examined
+ * PARAMETERS: Name - The ACPI name to be repaired
*
- * RETURN: 1 if Character may appear in a name, else 0
+ * RETURN: Repaired version of the name
*
- * DESCRIPTION: Check for a printable character
+ * DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
+ * return the new name.
*
******************************************************************************/
-u8 acpi_ut_valid_acpi_character(char character)
+acpi_name acpi_ut_repair_name(acpi_name name)
{
+ char *name_ptr = ACPI_CAST_PTR(char, &name);
+ char new_name[ACPI_NAME_SIZE];
+ acpi_native_uint i;
- ACPI_FUNCTION_ENTRY();
+ for (i = 0; i < ACPI_NAME_SIZE; i++) {
+ new_name[i] = name_ptr[i];
- return ((u8) ((character == '_') ||
- (character >= 'A' && character <= 'Z') ||
- (character >= '0' && character <= '9')));
+ /*
+ * Replace a bad character with something printable, yet technically
+ * still invalid. This prevents any collisions with existing "good"
+ * names in the namespace.
+ */
+ if (!acpi_ut_valid_acpi_char(name_ptr[i], i)) {
+ new_name[i] = '*';
+ }
+ }
+
+ return (*ACPI_CAST_PTR(u32, new_name));
}
/*******************************************************************************
* FUNCTION: acpi_ut_strtoul64
*
* PARAMETERS: String - Null terminated string
- * Base - Radix of the string: 10, 16, or ACPI_ANY_BASE
+ * Base - Radix of the string: 16 or ACPI_ANY_BASE;
+ * ACPI_ANY_BASE means 'in behalf of to_integer'
* ret_integer - Where the converted integer is returned
*
* RETURN: Status and Converted value
u32 this_digit = 0;
acpi_integer return_value = 0;
acpi_integer quotient;
+ acpi_integer dividend;
+ u32 to_integer_op = (base == ACPI_ANY_BASE);
+ u32 mode32 = (acpi_gbl_integer_byte_width == 4);
+ u8 valid_digits = 0;
+ u8 sign_of0x = 0;
+ u8 term = 0;
- ACPI_FUNCTION_TRACE("ut_stroul64");
-
- if ((!string) || !(*string)) {
- goto error_exit;
- }
+ ACPI_FUNCTION_TRACE(ut_stroul64);
switch (base) {
case ACPI_ANY_BASE:
- case 10:
case 16:
break;
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
+ if (!string) {
+ goto error_exit;
+ }
+
/* Skip over any white space in the buffer */
- while (ACPI_IS_SPACE(*string) || *string == '\t') {
+ while ((*string) && (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 (to_integer_op) {
+ /*
+ * Base equal to ACPI_ANY_BASE means 'to_integer operation case'.
+ * We need to determine if it is decimal or hexadecimal.
+ */
if ((*string == '0') && (ACPI_TOLOWER(*(string + 1)) == 'x')) {
+ sign_of0x = 1;
base = 16;
+
+ /* Skip over the leading '0x' */
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? Check that '0x' is not followed by white space. */
+
+ if (!(*string) || ACPI_IS_SPACE(*string) || *string == '\t') {
+ if (to_integer_op) {
+ goto error_exit;
+ } else {
+ goto all_done;
+ }
}
- /* Any string left? */
+ dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
- if (!(*string)) {
- goto error_exit;
- }
+ /* At least one character in the string here */
/* 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 */
+ } else if (base == 10) {
- goto error_exit;
- }
+ /* Digit is out of range; possible in to_integer case only */
+ term = 1;
+ } else {
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.
- */
+ term = 1;
+ }
+ }
+
+ if (term) {
+ if (to_integer_op) {
+ goto error_exit;
+ } else {
break;
}
+ } else if ((valid_digits == 0) && (this_digit == 0)
+ && !sign_of0x) {
+
+ /* Skip zeros */
+ string++;
+ continue;
+ }
+
+ valid_digits++;
+
+ if (sign_of0x
+ && ((valid_digits > 16)
+ || ((valid_digits > 8) && mode32))) {
+ /*
+ * This is to_integer operation case.
+ * No any restrictions for string-to-integer conversion,
+ * see ACPI spec.
+ */
+ goto error_exit;
}
/* Divide the digit into the correct position */
(void)
- acpi_ut_short_divide((ACPI_INTEGER_MAX -
- (acpi_integer) this_digit), base,
- "ient, NULL);
+ acpi_ut_short_divide((dividend - (acpi_integer) this_digit),
+ base, "ient, NULL);
+
if (return_value > quotient) {
- goto error_exit;
+ if (to_integer_op) {
+ goto error_exit;
+ } else {
+ break;
+ }
}
return_value *= base;
/* All done, normal exit */
+ all_done:
+
*ret_integer = return_value;
return_ACPI_STATUS(AE_OK);
u32 this_index;
union acpi_operand_object *this_source_obj;
- ACPI_FUNCTION_TRACE("ut_walk_package_tree");
+ ACPI_FUNCTION_TRACE(ut_walk_package_tree);
state = acpi_ut_create_pkg_state(source_object, target_object, 0);
if (!state) {
}
while (state) {
+
/* Get one element of the package */
this_index = state->pkg.index;
/*******************************************************************************
*
- * FUNCTION: acpi_ut_generate_checksum
+ * FUNCTION: acpi_ut_error, acpi_ut_warning, acpi_ut_info
*
- * PARAMETERS: Buffer - Buffer to be scanned
- * Length - number of bytes to examine
+ * 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: The generated checksum
+ * RETURN: None
*
- * DESCRIPTION: Generate a checksum on a raw buffer
+ * DESCRIPTION: Print message with module/line/version info
*
******************************************************************************/
-u8 acpi_ut_generate_checksum(u8 * buffer, u32 length)
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_error(char *module_name, u32 line_number, char *format, ...)
{
- u32 i;
- signed char sum = 0;
+ va_list args;
- for (i = 0; i < length; i++) {
- sum = (signed char)(sum + buffer[i]);
- }
+ acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
- return ((u8) (0 - sum));
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
}
-/*******************************************************************************
- *
- * 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)
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_exception(char *module_name,
+ u32 line_number, acpi_status status, char *format, ...)
{
- u8 buffer_byte;
- u8 *buffer;
- u8 *end_buffer;
+ va_list args;
- buffer = obj_desc->buffer.pointer;
- end_buffer = buffer + obj_desc->buffer.length;
+ acpi_os_printf("ACPI Exception (%s-%04d): %s, ", module_name,
+ line_number, acpi_format_exception(status));
- 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);
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
}
+EXPORT_SYMBOL(acpi_ut_exception);
-/*******************************************************************************
- *
- * 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)
- *
- * RETURN: None
- *
- * DESCRIPTION: Print error message
- *
- ******************************************************************************/
-
-void acpi_ut_report_error(char *module_name, u32 line_number, u32 component_id)
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_warning(char *module_name, u32 line_number, char *format, ...)
{
+ va_list args;
- 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)
- *
- * RETURN: None
- *
- * DESCRIPTION: Print warning message
- *
- ******************************************************************************/
-
-void
-acpi_ut_report_warning(char *module_name, u32 line_number, u32 component_id)
-{
+ acpi_os_printf("ACPI Warning (%s-%04d): ", module_name, line_number);
- acpi_os_printf("%8s-%04d: *** Warning: ", module_name, line_number);
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
}
-/*******************************************************************************
- *
- * 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)
- *
- * RETURN: None
- *
- * DESCRIPTION: Print information message
- *
- ******************************************************************************/
-
-void acpi_ut_report_info(char *module_name, u32 line_number, u32 component_id)
+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);
- acpi_os_printf("%8s-%04d: *** Info: ", module_name, line_number);
+ va_start(args, format);
+ acpi_os_vprintf(format, args);
+ acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
}
git.openpandora.org / pandora-kernel.git / blobdiff