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+/******************************************************************************
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+ *
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+ * Module Name: utpredef - support functions for predefined names
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+ *
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+ *****************************************************************************/
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+
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+/*
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+ * Copyright (C) 2000 - 2013, Intel Corp.
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+ * All rights reserved.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions
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+ * are met:
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+ * 1. Redistributions of source code must retain the above copyright
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+ * notice, this list of conditions, and the following disclaimer,
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+ * without modification.
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+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
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+ * substantially similar to the "NO WARRANTY" disclaimer below
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+ * ("Disclaimer") and any redistribution must be conditioned upon
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+ * including a substantially similar Disclaimer requirement for further
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+ * binary redistribution.
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+ * 3. Neither the names of the above-listed copyright holders nor the names
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+ * of any contributors may be used to endorse or promote products derived
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+ * from this software without specific prior written permission.
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+ *
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+ * Alternatively, this software may be distributed under the terms of the
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+ * GNU General Public License ("GPL") version 2 as published by the Free
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+ * Software Foundation.
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+ *
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+ * NO WARRANTY
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+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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+ * POSSIBILITY OF SUCH DAMAGES.
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+ */
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+
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+#include <acpi/acpi.h>
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+#include "accommon.h"
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+#include "acpredef.h"
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+
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+#define _COMPONENT ACPI_UTILITIES
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+ACPI_MODULE_NAME("utpredef")
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+
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+/*
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+ * Names for the types that can be returned by the predefined objects.
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+ * Used for warning messages. Must be in the same order as the ACPI_RTYPEs
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+ */
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+static const char *ut_rtype_names[] = {
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+ "/Integer",
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+ "/String",
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+ "/Buffer",
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+ "/Package",
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+ "/Reference",
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+};
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+
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+/*******************************************************************************
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+ *
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+ * FUNCTION: acpi_ut_get_next_predefined_method
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+ *
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+ * PARAMETERS: this_name - Entry in the predefined method/name table
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+ *
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+ * RETURN: Pointer to next entry in predefined table.
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+ *
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+ * DESCRIPTION: Get the next entry in the predefine method table. Handles the
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+ * cases where a package info entry follows a method name that
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+ * returns a package.
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+ *
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+ ******************************************************************************/
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+
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+const union acpi_predefined_info *acpi_ut_get_next_predefined_method(const union
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+ acpi_predefined_info
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+ *this_name)
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+{
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+
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+ /*
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+ * Skip next entry in the table if this name returns a Package
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+ * (next entry contains the package info)
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+ */
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+ if ((this_name->info.expected_btypes & ACPI_RTYPE_PACKAGE) &&
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+ (this_name->info.expected_btypes != ACPI_RTYPE_ALL)) {
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+ this_name++;
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+ }
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+
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+ this_name++;
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+ return (this_name);
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+}
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+
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+/*******************************************************************************
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+ *
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+ * FUNCTION: acpi_ut_match_predefined_method
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+ *
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+ * PARAMETERS: name - Name to find
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+ *
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+ * RETURN: Pointer to entry in predefined table. NULL indicates not found.
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+ *
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+ * DESCRIPTION: Check an object name against the predefined object list.
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+ *
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+ ******************************************************************************/
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+
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+const union acpi_predefined_info *acpi_ut_match_predefined_method(char *name)
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+{
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+ const union acpi_predefined_info *this_name;
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+
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+ /* Quick check for a predefined name, first character must be underscore */
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+
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+ if (name[0] != '_') {
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+ return (NULL);
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+ }
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+
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+ /* Search info table for a predefined method/object name */
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+
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+ this_name = acpi_gbl_predefined_methods;
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+ while (this_name->info.name[0]) {
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+ if (ACPI_COMPARE_NAME(name, this_name->info.name)) {
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+ return (this_name);
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+ }
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+
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+ this_name = acpi_ut_get_next_predefined_method(this_name);
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+ }
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+
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+ return (NULL); /* Not found */
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+}
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+
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+/*******************************************************************************
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+ *
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+ * FUNCTION: acpi_ut_get_expected_return_types
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+ *
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+ * PARAMETERS: buffer - Where the formatted string is returned
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+ * expected_Btypes - Bitfield of expected data types
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+ *
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+ * RETURN: Formatted string in Buffer.
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+ *
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+ * DESCRIPTION: Format the expected object types into a printable string.
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+ *
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+ ******************************************************************************/
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+
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+void acpi_ut_get_expected_return_types(char *buffer, u32 expected_btypes)
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+{
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+ u32 this_rtype;
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+ u32 i;
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+ u32 j;
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+
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+ j = 1;
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+ buffer[0] = 0;
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+ this_rtype = ACPI_RTYPE_INTEGER;
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+
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+ for (i = 0; i < ACPI_NUM_RTYPES; i++) {
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+
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+ /* If one of the expected types, concatenate the name of this type */
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+
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+ if (expected_btypes & this_rtype) {
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+ ACPI_STRCAT(buffer, &ut_rtype_names[i][j]);
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+ j = 0; /* Use name separator from now on */
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+ }
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+
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+ this_rtype <<= 1; /* Next Rtype */
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+ }
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+}
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+
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+/*******************************************************************************
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+ *
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+ * The remaining functions are used by iASL and acpi_help only
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+ *
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+ ******************************************************************************/
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+
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+#if (defined ACPI_ASL_COMPILER || defined ACPI_HELP_APP)
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+#include <stdio.h>
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+#include <string.h>
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+
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+/* Local prototypes */
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+
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+static u32 acpi_ut_get_argument_types(char *buffer, u16 argument_types);
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+
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+/* Types that can be returned externally by a predefined name */
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+
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+static const char *ut_external_type_names[] = /* Indexed by ACPI_TYPE_* */
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+{
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+ ", UNSUPPORTED-TYPE",
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+ ", Integer",
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+ ", String",
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+ ", Buffer",
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+ ", Package"
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+};
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+
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+/* Bit widths for resource descriptor predefined names */
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+
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+static const char *ut_resource_type_names[] = {
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+ "/1",
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+ "/2",
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+ "/3",
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+ "/8",
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+ "/16",
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+ "/32",
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+ "/64",
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+ "/variable",
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+};
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+
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+/*******************************************************************************
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+ *
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+ * FUNCTION: acpi_ut_match_resource_name
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+ *
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+ * PARAMETERS: name - Name to find
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+ *
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+ * RETURN: Pointer to entry in the resource table. NULL indicates not
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+ * found.
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+ *
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+ * DESCRIPTION: Check an object name against the predefined resource
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+ * descriptor object list.
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+ *
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+ ******************************************************************************/
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+
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+const union acpi_predefined_info *acpi_ut_match_resource_name(char *name)
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+{
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+ const union acpi_predefined_info *this_name;
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+
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+ /* Quick check for a predefined name, first character must be underscore */
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+
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+ if (name[0] != '_') {
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+ return (NULL);
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+ }
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+
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+ /* Search info table for a predefined method/object name */
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+
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+ this_name = acpi_gbl_resource_names;
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+ while (this_name->info.name[0]) {
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+ if (ACPI_COMPARE_NAME(name, this_name->info.name)) {
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+ return (this_name);
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+ }
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+
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+ this_name++;
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+ }
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+
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+ return (NULL); /* Not found */
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+}
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+
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+/*******************************************************************************
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+ *
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+ * FUNCTION: acpi_ut_display_predefined_method
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+ *
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+ * PARAMETERS: buffer - Scratch buffer for this function
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+ * this_name - Entry in the predefined method/name table
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+ * multi_line - TRUE if output should be on >1 line
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+ *
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+ * RETURN: None
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+ *
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+ * DESCRIPTION: Display information about a predefined method. Number and
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+ * type of the input arguments, and expected type(s) for the
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+ * return value, if any.
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+ *
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+ ******************************************************************************/
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+
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+void
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+acpi_ut_display_predefined_method(char *buffer,
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+ const union acpi_predefined_info *this_name,
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+ u8 multi_line)
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+{
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+ u32 arg_count;
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+
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+ /*
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+ * Get the argument count and the string buffer
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+ * containing all argument types
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+ */
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+ arg_count = acpi_ut_get_argument_types(buffer,
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+ this_name->info.argument_list);
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+
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+ if (multi_line) {
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+ printf(" ");
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+ }
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+
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+ printf("%4.4s Requires %s%u argument%s",
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+ this_name->info.name,
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+ (this_name->info.argument_list & ARG_COUNT_IS_MINIMUM) ?
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+ "(at least) " : "", arg_count, arg_count != 1 ? "s" : "");
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+
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+ /* Display the types for any arguments */
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+
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+ if (arg_count > 0) {
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+ printf(" (%s)", buffer);
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+ }
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+
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+ if (multi_line) {
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+ printf("\n ");
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+ }
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+
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+ /* Get the return value type(s) allowed */
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+
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+ if (this_name->info.expected_btypes) {
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+ acpi_ut_get_expected_return_types(buffer,
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+ this_name->info.
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+ expected_btypes);
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+ printf(" Return value types: %s\n", buffer);
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+ } else {
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+ printf(" No return value\n");
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+ }
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+}
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+
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+/*******************************************************************************
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+ *
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+ * FUNCTION: acpi_ut_get_argument_types
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+ *
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+ * PARAMETERS: buffer - Where to return the formatted types
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+ * argument_types - Types field for this method
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+ *
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+ * RETURN: count - the number of arguments required for this method
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+ *
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+ * DESCRIPTION: Format the required data types for this method (Integer,
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+ * String, Buffer, or Package) and return the required argument
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+ * count.
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+ *
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+ ******************************************************************************/
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+
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+static u32 acpi_ut_get_argument_types(char *buffer, u16 argument_types)
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+{
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+ u16 this_argument_type;
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+ u16 sub_index;
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+ u16 arg_count;
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+ u32 i;
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+
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+ *buffer = 0;
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+ sub_index = 2;
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+
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+ /* First field in the types list is the count of args to follow */
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+
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+ arg_count = (argument_types & METHOD_ARG_MASK);
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+ argument_types >>= METHOD_ARG_BIT_WIDTH;
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+
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+ if (arg_count > METHOD_PREDEF_ARGS_MAX) {
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+ printf("**** Invalid argument count (%u) "
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+ "in predefined info structure\n", arg_count);
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+ return (arg_count);
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+ }
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+
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+ /* Get each argument from the list, convert to ascii, store to buffer */
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+
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+ for (i = 0; i < arg_count; i++) {
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+ this_argument_type = (argument_types & METHOD_ARG_MASK);
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+ if (!this_argument_type
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+ || (this_argument_type > METHOD_MAX_ARG_TYPE)) {
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+ printf("**** Invalid argument type (%u) "
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+ "in predefined info structure\n",
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+ this_argument_type);
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+ return (arg_count);
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+ }
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+
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+ strcat(buffer,
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+ ut_external_type_names[this_argument_type] + sub_index);
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+
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+ /* Shift to next argument type field */
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+
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+ argument_types >>= METHOD_ARG_BIT_WIDTH;
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+ sub_index = 0;
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+ }
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+
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+ return (arg_count);
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+}
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+
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+/*******************************************************************************
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+ *
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+ * FUNCTION: acpi_ut_get_resource_bit_width
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+ *
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+ * PARAMETERS: buffer - Where the formatted string is returned
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+ * types - Bitfield of expected data types
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+ *
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+ * RETURN: Count of return types. Formatted string in Buffer.
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+ *
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+ * DESCRIPTION: Format the resource bit widths into a printable string.
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+ *
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+ ******************************************************************************/
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+
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+u32 acpi_ut_get_resource_bit_width(char *buffer, u16 types)
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+{
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+ u32 i;
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+ u16 sub_index;
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+ u32 found;
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+
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+ *buffer = 0;
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+ sub_index = 1;
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+ found = 0;
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+
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+ for (i = 0; i < NUM_RESOURCE_WIDTHS; i++) {
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+ if (types & 1) {
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+ strcat(buffer, &(ut_resource_type_names[i][sub_index]));
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+ sub_index = 0;
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+ found++;
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+ }
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+
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+ types >>= 1;
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+ }
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+
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+ return (found);
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+}
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+#endif
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Bob Moore