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/executer/exconvrt.c b/drivers/acpi/executer/exconvrt.c
new file mode 100644
index 0000000..df7ba12
--- /dev/null
+++ b/drivers/acpi/executer/exconvrt.c
@@ -0,0 +1,708 @@
+/******************************************************************************
+ *
+ * Module Name: exconvrt - Object conversion routines
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acinterp.h>
+#include <acpi/amlcode.h>
+
+
+#define _COMPONENT ACPI_EXECUTER
+ ACPI_MODULE_NAME ("exconvrt")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_convert_to_integer
+ *
+ * PARAMETERS: obj_desc - Object to be converted. Must be an
+ * Integer, Buffer, or String
+ * result_desc - Where the new Integer object is returned
+ * Flags - Used for string conversion
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert an ACPI Object to an integer.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_convert_to_integer (
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object **result_desc,
+ u32 flags)
+{
+ union acpi_operand_object *return_desc;
+ u8 *pointer;
+ acpi_integer result;
+ u32 i;
+ u32 count;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_integer", obj_desc);
+
+
+ switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+ case ACPI_TYPE_INTEGER:
+
+ /* No conversion necessary */
+
+ *result_desc = obj_desc;
+ return_ACPI_STATUS (AE_OK);
+
+ case ACPI_TYPE_BUFFER:
+ case ACPI_TYPE_STRING:
+
+ /* Note: Takes advantage of common buffer/string fields */
+
+ pointer = obj_desc->buffer.pointer;
+ count = obj_desc->buffer.length;
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_TYPE);
+ }
+
+ /*
+ * Convert the buffer/string to an integer. Note that both buffers and
+ * strings are treated as raw data - we don't convert ascii to hex for
+ * strings.
+ *
+ * There are two terminating conditions for the loop:
+ * 1) The size of an integer has been reached, or
+ * 2) The end of the buffer or string has been reached
+ */
+ result = 0;
+
+ /*
+ * String conversion is different than Buffer conversion
+ */
+ switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+ case ACPI_TYPE_STRING:
+
+ /*
+ * Convert string to an integer - for most cases, the string must be
+ * hexadecimal as per the ACPI specification. The only exception (as
+ * of ACPI 3.0) is that the to_integer() operator allows both decimal
+ * and hexadecimal strings (hex prefixed with "0x").
+ */
+ status = acpi_ut_strtoul64 ((char *) pointer, flags, &result);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ break;
+
+
+ case ACPI_TYPE_BUFFER:
+
+ /* Check for zero-length buffer */
+
+ if (!count) {
+ return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
+ }
+
+ /* Transfer no more than an integer's worth of data */
+
+ if (count > acpi_gbl_integer_byte_width) {
+ count = acpi_gbl_integer_byte_width;
+ }
+
+ /*
+ * Convert buffer to an integer - we simply grab enough raw data
+ * from the buffer to fill an integer
+ */
+ for (i = 0; i < count; i++) {
+ /*
+ * Get next byte and shift it into the Result.
+ * Little endian is used, meaning that the first byte of the buffer
+ * is the LSB of the integer
+ */
+ result |= (((acpi_integer) pointer[i]) << (i * 8));
+ }
+ break;
+
+
+ default:
+ /* No other types can get here */
+ break;
+ }
+
+ /*
+ * Create a new integer
+ */
+ return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+ if (!return_desc) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Save the Result */
+
+ return_desc->integer.value = result;
+ acpi_ex_truncate_for32bit_table (return_desc);
+ *result_desc = return_desc;
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_convert_to_buffer
+ *
+ * PARAMETERS: obj_desc - Object to be converted. Must be an
+ * Integer, Buffer, or String
+ * result_desc - Where the new buffer object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert an ACPI Object to a Buffer
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_convert_to_buffer (
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object **result_desc)
+{
+ union acpi_operand_object *return_desc;
+ u8 *new_buf;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_buffer", obj_desc);
+
+
+ switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+ case ACPI_TYPE_BUFFER:
+
+ /* No conversion necessary */
+
+ *result_desc = obj_desc;
+ return_ACPI_STATUS (AE_OK);
+
+
+ case ACPI_TYPE_INTEGER:
+
+ /*
+ * Create a new Buffer object.
+ * Need enough space for one integer
+ */
+ return_desc = acpi_ut_create_buffer_object (acpi_gbl_integer_byte_width);
+ if (!return_desc) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Copy the integer to the buffer, LSB first */
+
+ new_buf = return_desc->buffer.pointer;
+ ACPI_MEMCPY (new_buf,
+ &obj_desc->integer.value,
+ acpi_gbl_integer_byte_width);
+ break;
+
+
+ case ACPI_TYPE_STRING:
+
+ /*
+ * Create a new Buffer object
+ * Size will be the string length
+ *
+ * NOTE: Add one to the string length to include the null terminator.
+ * The ACPI spec is unclear on this subject, but there is existing
+ * ASL/AML code that depends on the null being transferred to the new
+ * buffer.
+ */
+ return_desc = acpi_ut_create_buffer_object ((acpi_size) obj_desc->string.length + 1);
+ if (!return_desc) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Copy the string to the buffer */
+
+ new_buf = return_desc->buffer.pointer;
+ ACPI_STRNCPY ((char *) new_buf, (char *) obj_desc->string.pointer,
+ obj_desc->string.length);
+ break;
+
+
+ default:
+ return_ACPI_STATUS (AE_TYPE);
+ }
+
+ /* Mark buffer initialized */
+
+ return_desc->common.flags |= AOPOBJ_DATA_VALID;
+ *result_desc = return_desc;
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_convert_to_ascii
+ *
+ * PARAMETERS: Integer - Value to be converted
+ * Base - ACPI_STRING_DECIMAL or ACPI_STRING_HEX
+ * String - Where the string is returned
+ * data_width - Size of data item to be converted, in bytes
+ *
+ * RETURN: Actual string length
+ *
+ * DESCRIPTION: Convert an ACPI Integer to a hex or decimal string
+ *
+ ******************************************************************************/
+
+u32
+acpi_ex_convert_to_ascii (
+ acpi_integer integer,
+ u16 base,
+ u8 *string,
+ u8 data_width)
+{
+ acpi_integer digit;
+ acpi_native_uint i;
+ acpi_native_uint j;
+ acpi_native_uint k = 0;
+ acpi_native_uint hex_length;
+ acpi_native_uint decimal_length;
+ u32 remainder;
+ u8 supress_zeros;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ switch (base) {
+ case 10:
+
+ /* Setup max length for the decimal number */
+
+ switch (data_width) {
+ case 1:
+ decimal_length = ACPI_MAX8_DECIMAL_DIGITS;
+ break;
+
+ case 4:
+ decimal_length = ACPI_MAX32_DECIMAL_DIGITS;
+ break;
+
+ case 8:
+ default:
+ decimal_length = ACPI_MAX64_DECIMAL_DIGITS;
+ break;
+ }
+
+ supress_zeros = TRUE; /* No leading zeros */
+ remainder = 0;
+
+ for (i = decimal_length; i > 0; i--) {
+ /* Divide by nth factor of 10 */
+
+ digit = integer;
+ for (j = 0; j < i; j++) {
+ (void) acpi_ut_short_divide (digit, 10, &digit, &remainder);
+ }
+
+ /* Handle leading zeros */
+
+ if (remainder != 0) {
+ supress_zeros = FALSE;
+ }
+
+ if (!supress_zeros) {
+ string[k] = (u8) (ACPI_ASCII_ZERO + remainder);
+ k++;
+ }
+ }
+ break;
+
+ case 16:
+
+ hex_length = ACPI_MUL_2 (data_width); /* 2 ascii hex chars per data byte */
+
+ for (i = 0, j = (hex_length-1); i < hex_length; i++, j--) {
+ /* Get one hex digit, most significant digits first */
+
+ string[k] = (u8) acpi_ut_hex_to_ascii_char (integer, ACPI_MUL_4 (j));
+ k++;
+ }
+ break;
+
+ default:
+ return (0);
+ }
+
+ /*
+ * Since leading zeros are supressed, we must check for the case where
+ * the integer equals 0
+ *
+ * Finally, null terminate the string and return the length
+ */
+ if (!k) {
+ string [0] = ACPI_ASCII_ZERO;
+ k = 1;
+ }
+
+ string [k] = 0;
+ return ((u32) k);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_convert_to_string
+ *
+ * PARAMETERS: obj_desc - Object to be converted. Must be an
+ * Integer, Buffer, or String
+ * result_desc - Where the string object is returned
+ * Type - String flags (base and conversion type)
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert an ACPI Object to a string
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_convert_to_string (
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object **result_desc,
+ u32 type)
+{
+ union acpi_operand_object *return_desc;
+ u8 *new_buf;
+ u32 i;
+ u32 string_length = 0;
+ u16 base = 16;
+ u8 separator = ',';
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_string", obj_desc);
+
+
+ switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+ case ACPI_TYPE_STRING:
+
+ /* No conversion necessary */
+
+ *result_desc = obj_desc;
+ return_ACPI_STATUS (AE_OK);
+
+
+ case ACPI_TYPE_INTEGER:
+
+ switch (type) {
+ case ACPI_EXPLICIT_CONVERT_DECIMAL:
+
+ /* Make room for maximum decimal number */
+
+ string_length = ACPI_MAX_DECIMAL_DIGITS;
+ base = 10;
+ break;
+
+ default:
+
+ /* Two hex string characters for each integer byte */
+
+ string_length = ACPI_MUL_2 (acpi_gbl_integer_byte_width);
+ break;
+ }
+
+ /*
+ * Create a new String
+ * Need enough space for one ASCII integer (plus null terminator)
+ */
+ return_desc = acpi_ut_create_string_object ((acpi_size) string_length);
+ if (!return_desc) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ new_buf = return_desc->buffer.pointer;
+
+ /* Convert integer to string */
+
+ string_length = acpi_ex_convert_to_ascii (obj_desc->integer.value, base,
+ new_buf, acpi_gbl_integer_byte_width);
+
+ /* Null terminate at the correct place */
+
+ return_desc->string.length = string_length;
+ new_buf [string_length] = 0;
+ break;
+
+
+ case ACPI_TYPE_BUFFER:
+
+ /* Setup string length, base, and separator */
+
+ switch (type) {
+ case ACPI_EXPLICIT_CONVERT_DECIMAL: /* Used by to_decimal_string operator */
+ /*
+ * From ACPI: "If Data is a buffer, it is converted to a string of
+ * decimal values separated by commas."
+ */
+ base = 10;
+
+ /*
+ * Calculate the final string length. Individual string values
+ * are variable length (include separator for each)
+ */
+ for (i = 0; i < obj_desc->buffer.length; i++) {
+ if (obj_desc->buffer.pointer[i] >= 100) {
+ string_length += 4;
+ }
+ else if (obj_desc->buffer.pointer[i] >= 10) {
+ string_length += 3;
+ }
+ else {
+ string_length += 2;
+ }
+ }
+ break;
+
+ case ACPI_IMPLICIT_CONVERT_HEX:
+ /*
+ * From the ACPI spec:
+ *"The entire contents of the buffer are converted to a string of
+ * two-character hexadecimal numbers, each separated by a space."
+ */
+ separator = ' ';
+ string_length = (obj_desc->buffer.length * 3);
+ break;
+
+ case ACPI_EXPLICIT_CONVERT_HEX: /* Used by to_hex_string operator */
+ /*
+ * From ACPI: "If Data is a buffer, it is converted to a string of
+ * hexadecimal values separated by commas."
+ */
+ string_length = (obj_desc->buffer.length * 3);
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_BAD_PARAMETER);
+ }
+
+ /*
+ * Perform the conversion.
+ * (-1 because of extra separator included in string_length from above)
+ */
+ string_length--;
+ if (string_length > ACPI_MAX_STRING_CONVERSION) /* ACPI limit */ {
+ return_ACPI_STATUS (AE_AML_STRING_LIMIT);
+ }
+
+ /*
+ * Create a new string object and string buffer
+ */
+ return_desc = acpi_ut_create_string_object ((acpi_size) string_length);
+ if (!return_desc) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ new_buf = return_desc->buffer.pointer;
+
+ /*
+ * Convert buffer bytes to hex or decimal values
+ * (separated by commas or spaces)
+ */
+ for (i = 0; i < obj_desc->buffer.length; i++) {
+ new_buf += acpi_ex_convert_to_ascii (
+ (acpi_integer) obj_desc->buffer.pointer[i], base,
+ new_buf, 1);
+ *new_buf++ = separator; /* each separated by a comma or space */
+ }
+
+ /* Null terminate the string (overwrites final comma/space from above) */
+
+ new_buf--;
+ *new_buf = 0;
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_TYPE);
+ }
+
+ *result_desc = return_desc;
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_convert_to_target_type
+ *
+ * PARAMETERS: destination_type - Current type of the destination
+ * source_desc - Source object to be converted.
+ * result_desc - Where the converted object is returned
+ * walk_state - Current method state
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Implements "implicit conversion" rules for storing an object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_convert_to_target_type (
+ acpi_object_type destination_type,
+ union acpi_operand_object *source_desc,
+ union acpi_operand_object **result_desc,
+ struct acpi_walk_state *walk_state)
+{
+ acpi_status status = AE_OK;
+
+
+ ACPI_FUNCTION_TRACE ("ex_convert_to_target_type");
+
+
+ /* Default behavior */
+
+ *result_desc = source_desc;
+
+ /*
+ * If required by the target,
+ * perform implicit conversion on the source before we store it.
+ */
+ switch (GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args)) {
+ case ARGI_SIMPLE_TARGET:
+ case ARGI_FIXED_TARGET:
+ case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */
+
+ switch (destination_type) {
+ case ACPI_TYPE_LOCAL_REGION_FIELD:
+ /*
+ * Named field can always handle conversions
+ */
+ break;
+
+ default:
+ /* No conversion allowed for these types */
+
+ if (destination_type != ACPI_GET_OBJECT_TYPE (source_desc)) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "Explicit operator, will store (%s) over existing type (%s)\n",
+ acpi_ut_get_object_type_name (source_desc),
+ acpi_ut_get_type_name (destination_type)));
+ status = AE_TYPE;
+ }
+ }
+ break;
+
+
+ case ARGI_TARGETREF:
+
+ switch (destination_type) {
+ case ACPI_TYPE_INTEGER:
+ case ACPI_TYPE_BUFFER_FIELD:
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+ case ACPI_TYPE_LOCAL_INDEX_FIELD:
+ /*
+ * These types require an Integer operand. We can convert
+ * a Buffer or a String to an Integer if necessary.
+ */
+ status = acpi_ex_convert_to_integer (source_desc, result_desc,
+ 16);
+ break;
+
+
+ case ACPI_TYPE_STRING:
+
+ /*
+ * The operand must be a String. We can convert an
+ * Integer or Buffer if necessary
+ */
+ status = acpi_ex_convert_to_string (source_desc, result_desc,
+ ACPI_IMPLICIT_CONVERT_HEX);
+ break;
+
+
+ case ACPI_TYPE_BUFFER:
+
+ /*
+ * The operand must be a Buffer. We can convert an
+ * Integer or String if necessary
+ */
+ status = acpi_ex_convert_to_buffer (source_desc, result_desc);
+ break;
+
+
+ default:
+ ACPI_REPORT_ERROR (("Bad destination type during conversion: %X\n",
+ destination_type));
+ status = AE_AML_INTERNAL;
+ break;
+ }
+ break;
+
+
+ case ARGI_REFERENCE:
+ /*
+ * create_xxxx_field cases - we are storing the field object into the name
+ */
+ break;
+
+
+ default:
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Unknown Target type ID 0x%X Op %s dest_type %s\n",
+ GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args),
+ walk_state->op_info->name, acpi_ut_get_type_name (destination_type)));
+
+ ACPI_REPORT_ERROR (("Bad Target Type (ARGI): %X\n",
+ GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args)))
+ status = AE_AML_INTERNAL;
+ }
+
+ /*
+ * Source-to-Target conversion semantics:
+ *
+ * If conversion to the target type cannot be performed, then simply
+ * overwrite the target with the new object and type.
+ */
+ if (status == AE_TYPE) {
+ status = AE_OK;
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+