1 files changed, 1093 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
new file mode 100644
index 000000000000..c1f7f4e1a72d
--- /dev/null
+++ b/drivers/acpi/acpica/utmisc.c
@@ -0,0 +1,1093 @@
+/*******************************************************************************
+ *
+ * Module Name: utmisc - common utility procedures
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * 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 <linux/module.h>
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utmisc")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_validate_exception
+ *
+ * PARAMETERS:  Status       - The acpi_status code to be formatted
+ *
+ * RETURN:      A string containing the exception text. NULL if exception is
+ *              not valid.
+ *
+ * DESCRIPTION: This function validates and translates an ACPI exception into
+ *              an ASCII string.
+ *
+ ******************************************************************************/
+const char *acpi_ut_validate_exception(acpi_status status)
+{
+        u32 sub_status;
+        const char *exception = NULL;
+
+        ACPI_FUNCTION_ENTRY();
+
+        /*
+         * Status is composed of two parts, a "type" and an actual code
+         */
+        sub_status = (status & ~AE_CODE_MASK);
+
+        switch (status & AE_CODE_MASK) {
+        case AE_CODE_ENVIRONMENTAL:
+
+                if (sub_status <= AE_CODE_ENV_MAX) {
+                        exception = acpi_gbl_exception_names_env[sub_status];
+                }
+                break;
+
+        case AE_CODE_PROGRAMMER:
+
+                if (sub_status <= AE_CODE_PGM_MAX) {
+                        exception = acpi_gbl_exception_names_pgm[sub_status];
+                }
+                break;
+
+        case AE_CODE_ACPI_TABLES:
+
+                if (sub_status <= AE_CODE_TBL_MAX) {
+                        exception = acpi_gbl_exception_names_tbl[sub_status];
+                }
+                break;
+
+        case AE_CODE_AML:
+
+                if (sub_status <= AE_CODE_AML_MAX) {
+                        exception = acpi_gbl_exception_names_aml[sub_status];
+                }
+                break;
+
+        case AE_CODE_CONTROL:
+
+                if (sub_status <= AE_CODE_CTRL_MAX) {
+                        exception = acpi_gbl_exception_names_ctrl[sub_status];
+                }
+                break;
+
+        default:
+                break;
+        }
+
+        return (ACPI_CAST_PTR(const char, exception));
+}
+
+/*******************************************************************************
+ *
+ * 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)
+{
+
+        /* These are the only tables that contain executable AML */
+
+        if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) ||
+            ACPI_COMPARE_NAME(table->signature, ACPI_SIG_PSDT) ||
+            ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) {
+                return (TRUE);
+        }
+
+        return (FALSE);
+}
+
+/*******************************************************************************
+ *
+ * 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)
+{
+        u32 i;
+        u32 j;
+        u32 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 OwnerId: %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 OwnerId (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;
+        u32 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 OwnerId: %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 OwnerId: %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
+ *
+ * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
+ *              sequences.
+ *
+ ******************************************************************************/
+
+void acpi_ut_print_string(char *string, u8 max_length)
+{
+        u32 i;
+
+        if (!string) {
+                acpi_os_printf("<\"NULL STRING PTR\">");
+                return;
+        }
+
+        acpi_os_printf("\"");
+        for (i = 0; string[i] && (i < max_length); i++) {
+
+                /* Escape sequences */
+
+                switch (string[i]) {
+                case 0x07:
+                        acpi_os_printf("\\a");  /* BELL */
+                        break;
+
+                case 0x08:
+                        acpi_os_printf("\\b");  /* BACKSPACE */
+                        break;
+
+                case 0x0C:
+                        acpi_os_printf("\\f");  /* FORMFEED */
+                        break;
+
+                case 0x0A:
+                        acpi_os_printf("\\n");  /* LINEFEED */
+                        break;
+
+                case 0x0D:
+                        acpi_os_printf("\\r");  /* CARRIAGE RETURN */
+                        break;
+
+                case 0x09:
+                        acpi_os_printf("\\t");  /* HORIZONTAL TAB */
+                        break;
+
+                case 0x0B:
+                        acpi_os_printf("\\v");  /* VERTICAL TAB */
+                        break;
+
+                case '\'':      /* Single Quote */
+                case '\"':      /* Double Quote */
+                case '\\':      /* Backslash */
+                        acpi_os_printf("\\%c", (int)string[i]);
+                        break;
+
+                default:
+
+                        /* Check for printable character or hex escape */
+
+                        if (ACPI_IS_PRINT(string[i])) {
+                                /* This is a normal character */
+
+                                acpi_os_printf("%c", (int)string[i]);
+                        } else {
+                                /* All others will be Hex escapes */
+
+                                acpi_os_printf("\\x%2.2X", (s32) string[i]);
+                        }
+                        break;
+                }
+        }
+        acpi_os_printf("\"");
+
+        if (i == max_length && string[i]) {
+                acpi_os_printf("...");
+        }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_dword_byte_swap
+ *
+ * PARAMETERS:  Value           - Value to be converted
+ *
+ * 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)
+{
+        union {
+                u32 value;
+                u8 bytes[4];
+        } out;
+        union {
+                u32 value;
+                u8 bytes[4];
+        } in;
+
+        ACPI_FUNCTION_ENTRY();
+
+        in.value = value;
+
+        out.bytes[0] = in.bytes[3];
+        out.bytes[1] = in.bytes[2];
+        out.bytes[2] = in.bytes[1];
+        out.bytes[3] = in.bytes[0];
+
+        return (out.value);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_set_integer_width
+ *
+ * PARAMETERS:  Revision            From DSDT header
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Set the global integer bit width based upon the revision
+ *              of the DSDT.  For Revision 1 and 0, Integers are 32 bits.
+ *              For Revision 2 and above, Integers are 64 bits.  Yes, this
+ *              makes a difference.
+ *
+ ******************************************************************************/
+
+void acpi_ut_set_integer_width(u8 revision)
+{
+
+        if (revision < 2) {
+
+                /* 32-bit case */
+
+                acpi_gbl_integer_bit_width = 32;
+                acpi_gbl_integer_nybble_width = 8;
+                acpi_gbl_integer_byte_width = 4;
+        } else {
+                /* 64-bit case (ACPI 2.0+) */
+
+                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:  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)
+ *
+ * RETURN:      acpi_status
+ *
+ * DESCRIPTION: Display full pathname of an object, DEBUG ONLY
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_display_init_pathname(u8 type,
+                              struct acpi_namespace_node *obj_handle,
+                              char *path)
+{
+        acpi_status status;
+        struct acpi_buffer buffer;
+
+        ACPI_FUNCTION_ENTRY();
+
+        /* Only print the path if the appropriate debug level is enabled */
+
+        if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
+                return;
+        }
+
+        /* Get the full pathname to the node */
+
+        buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+        status = acpi_ns_handle_to_pathname(obj_handle, &buffer);
+        if (ACPI_FAILURE(status)) {
+                return;
+        }
+
+        /* Print what we're doing */
+
+        switch (type) {
+        case ACPI_TYPE_METHOD:
+                acpi_os_printf("Executing  ");
+                break;
+
+        default:
+                acpi_os_printf("Initializing ");
+                break;
+        }
+
+        /* Print the object type and pathname */
+
+        acpi_os_printf("%-12s %s",
+                       acpi_ut_get_type_name(type), (char *)buffer.pointer);
+
+        /* Extra path is used to append names like _STA, _INI, etc. */
+
+        if (path) {
+                acpi_os_printf(".%s", path);
+        }
+        acpi_os_printf("\n");
+
+        ACPI_FREE(buffer.pointer);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_valid_acpi_char
+ *
+ * PARAMETERS:  Char            - The character to be examined
+ *              Position        - Byte position (0-3)
+ *
+ * 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, u32 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
+ *
+ * PARAMETERS:  Name            - The name to be examined
+ *
+ * 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
+ *              2) numeric
+ *              3) underscore
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_valid_acpi_name(u32 name)
+{
+        u32 i;
+
+        ACPI_FUNCTION_ENTRY();
+
+        for (i = 0; i < ACPI_NAME_SIZE; i++) {
+                if (!acpi_ut_valid_acpi_char
+                    ((ACPI_CAST_PTR(char, &name))[i], i)) {
+                        return (FALSE);
+                }
+        }
+
+        return (TRUE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_repair_name
+ *
+ * PARAMETERS:  Name            - The ACPI name to be repaired
+ *
+ * RETURN:      Repaired version of the name
+ *
+ * DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
+ *              return the new name.
+ *
+ ******************************************************************************/
+
+acpi_name acpi_ut_repair_name(char *name)
+{
+       u32 i;
+        char new_name[ACPI_NAME_SIZE];
+
+        for (i = 0; i < ACPI_NAME_SIZE; i++) {
+                new_name[i] = name[i];
+
+                /*
+                 * 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[i], i)) {
+                        new_name[i] = '*';
+                }
+        }
+
+        return (*(u32 *) new_name);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_strtoul64
+ *
+ * PARAMETERS:  String          - Null terminated string
+ *              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
+ *
+ * DESCRIPTION: Convert a string into an unsigned value. Performs either a
+ *              32-bit or 64-bit conversion, depending on the current mode
+ *              of the interpreter.
+ *              NOTE: Does not support Octal strings, not needed.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_strtoul64(char *string, u32 base, acpi_integer * ret_integer)
+{
+        u32 this_digit = 0;
+        acpi_integer return_value = 0;
+        acpi_integer quotient;
+        acpi_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_STR(ut_stroul64, string);
+
+        switch (base) {
+        case ACPI_ANY_BASE:
+        case 16:
+                break;
+
+        default:
+                /* Invalid Base */
+                return_ACPI_STATUS(AE_BAD_PARAMETER);
+        }
+
+        if (!string) {
+                goto error_exit;
+        }
+
+        /* Skip over any white space in the buffer */
+
+        while ((*string) && (ACPI_IS_SPACE(*string) || *string == '\t')) {
+                string++;
+        }
+
+        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;
+                }
+        }
+
+        /* 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;
+                }
+        }
+
+        /*
+         * Perform a 32-bit or 64-bit conversion, depending upon the current
+         * execution mode of the interpreter
+         */
+        dividend = (mode32) ? ACPI_UINT32_MAX : ACPI_UINT64_MAX;
+
+        /* Main loop: convert the string to a 32- or 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; 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 {
+                                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((dividend - (acpi_integer) this_digit),
+                                         base, &quotient, NULL);
+
+                if (return_value > quotient) {
+                        if (to_integer_op) {
+                                goto error_exit;
+                        } else {
+                                break;
+                        }
+                }
+
+                return_value *= base;
+                return_value += this_digit;
+                string++;
+        }
+
+        /* All done, normal exit */
+
+      all_done:
+
+        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Converted value: %8.8X%8.8X\n",
+                          ACPI_FORMAT_UINT64(return_value)));
+
+        *ret_integer = return_value;
+        return_ACPI_STATUS(AE_OK);
+
+      error_exit:
+        /* Base was set/validated above */
+
+        if (base == 10) {
+                return_ACPI_STATUS(AE_BAD_DECIMAL_CONSTANT);
+        } else {
+                return_ACPI_STATUS(AE_BAD_HEX_CONSTANT);
+        }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_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:      Status
+ *
+ * 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_walk_package_tree
+ *
+ * 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: 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) {
+
+                                /* Free any stacked Update State objects */
+
+                                while (state_list) {
+                                        state =
+                                            acpi_ut_pop_generic_state
+                                            (&state_list);
+                                        acpi_ut_delete_generic_state(state);
+                                }
+                                return_ACPI_STATUS(AE_NO_MEMORY);
+                        }
+                }
+        }
+
+        /* We should never get here */
+
+        return_ACPI_STATUS(AE_AML_INTERNAL);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_error, acpi_exception, acpi_warning, acpi_info
+ *
+ * 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:      None
+ *
+ * DESCRIPTION: Print message with module/line/version info
+ *
+ ******************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_error(const char *module_name, u32 line_number, const char *format, ...)
+{
+        va_list args;
+
+        acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
+
+        va_start(args, format);
+        acpi_os_vprintf(format, args);
+        acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
+        va_end(args);
+}
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_exception(const char *module_name,
+               u32 line_number, acpi_status status, const char *format, ...)
+{
+        va_list args;
+
+        acpi_os_printf("ACPI Exception (%s-%04d): %s, ", module_name,
+                       line_number, acpi_format_exception(status));
+
+        va_start(args, format);
+        acpi_os_vprintf(format, args);
+        acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
+        va_end(args);
+}
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_warning(const char *module_name, u32 line_number, const char *format, ...)
+{
+        va_list args;
+
+        acpi_os_printf("ACPI Warning (%s-%04d): ", module_name, line_number);
+
+        va_start(args, format);
+        acpi_os_vprintf(format, args);
+        acpi_os_printf(" [%X]\n", ACPI_CA_VERSION);
+        va_end(args);
+}
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_info(const char *module_name, u32 line_number, const char *format, ...)
+{
+        va_list args;
+
+        /*
+         * Removed module_name, line_number, and acpica version, not needed
+         * for info output
+         */
+        acpi_os_printf("ACPI: ");
+
+        va_start(args, format);
+        acpi_os_vprintf(format, args);
+        acpi_os_printf("\n");
+        va_end(args);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_error)
+ACPI_EXPORT_SYMBOL(acpi_exception)
+ACPI_EXPORT_SYMBOL(acpi_warning)
+ACPI_EXPORT_SYMBOL(acpi_info)