Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 708 insertions, 0 deletions

diff --git a/drivers/acpi/executer/exconvrt.c b/drivers/acpi/executer/exconvrt.c
new file mode 100644
index 000000000000..df7ba1219bf6
--- /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);
+}
+
+