mirror of https://gitee.com/openkylin/linux.git
1042 lines
26 KiB
C
1042 lines
26 KiB
C
/*******************************************************************************
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*
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* Module Name: utmisc - common utility procedures
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2010, 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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#include <linux/module.h>
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utmisc")
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_validate_exception
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*
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* PARAMETERS: Status - The acpi_status code to be formatted
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*
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* RETURN: A string containing the exception text. NULL if exception is
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* not valid.
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*
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* DESCRIPTION: This function validates and translates an ACPI exception into
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* an ASCII string.
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*
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******************************************************************************/
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const char *acpi_ut_validate_exception(acpi_status status)
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{
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u32 sub_status;
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const char *exception = NULL;
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ACPI_FUNCTION_ENTRY();
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/*
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* Status is composed of two parts, a "type" and an actual code
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*/
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sub_status = (status & ~AE_CODE_MASK);
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switch (status & AE_CODE_MASK) {
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case AE_CODE_ENVIRONMENTAL:
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if (sub_status <= AE_CODE_ENV_MAX) {
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exception = acpi_gbl_exception_names_env[sub_status];
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}
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break;
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case AE_CODE_PROGRAMMER:
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if (sub_status <= AE_CODE_PGM_MAX) {
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exception = acpi_gbl_exception_names_pgm[sub_status];
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}
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break;
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case AE_CODE_ACPI_TABLES:
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if (sub_status <= AE_CODE_TBL_MAX) {
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exception = acpi_gbl_exception_names_tbl[sub_status];
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}
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break;
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case AE_CODE_AML:
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if (sub_status <= AE_CODE_AML_MAX) {
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exception = acpi_gbl_exception_names_aml[sub_status];
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}
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break;
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case AE_CODE_CONTROL:
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if (sub_status <= AE_CODE_CTRL_MAX) {
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exception = acpi_gbl_exception_names_ctrl[sub_status];
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}
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break;
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default:
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break;
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}
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return (ACPI_CAST_PTR(const char, exception));
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_is_pci_root_bridge
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*
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* PARAMETERS: Id - The HID/CID in string format
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*
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* RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
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*
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* DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
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*
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******************************************************************************/
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u8 acpi_ut_is_pci_root_bridge(char *id)
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{
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/*
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* Check if this is a PCI root bridge.
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* ACPI 3.0+: check for a PCI Express root also.
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*/
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if (!(ACPI_STRCMP(id,
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PCI_ROOT_HID_STRING)) ||
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!(ACPI_STRCMP(id, PCI_EXPRESS_ROOT_HID_STRING))) {
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return (TRUE);
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}
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_is_aml_table
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*
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* PARAMETERS: Table - An ACPI table
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*
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* RETURN: TRUE if table contains executable AML; FALSE otherwise
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*
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* DESCRIPTION: Check ACPI Signature for a table that contains AML code.
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* Currently, these are DSDT,SSDT,PSDT. All other table types are
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* data tables that do not contain AML code.
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*
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******************************************************************************/
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u8 acpi_ut_is_aml_table(struct acpi_table_header *table)
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{
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/* These are the only tables that contain executable AML */
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if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) ||
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ACPI_COMPARE_NAME(table->signature, ACPI_SIG_PSDT) ||
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ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) {
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return (TRUE);
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}
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_allocate_owner_id
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*
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* PARAMETERS: owner_id - Where the new owner ID is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Allocate a table or method owner ID. The owner ID is used to
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* track objects created by the table or method, to be deleted
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* when the method exits or the table is unloaded.
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*
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******************************************************************************/
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acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id)
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{
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u32 i;
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u32 j;
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u32 k;
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acpi_status status;
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ACPI_FUNCTION_TRACE(ut_allocate_owner_id);
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/* Guard against multiple allocations of ID to the same location */
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if (*owner_id) {
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ACPI_ERROR((AE_INFO, "Owner ID [0x%2.2X] already exists",
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*owner_id));
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return_ACPI_STATUS(AE_ALREADY_EXISTS);
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}
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/* Mutex for the global ID mask */
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status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/*
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* Find a free owner ID, cycle through all possible IDs on repeated
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* allocations. (ACPI_NUM_OWNERID_MASKS + 1) because first index may have
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* to be scanned twice.
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*/
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for (i = 0, j = acpi_gbl_last_owner_id_index;
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i < (ACPI_NUM_OWNERID_MASKS + 1); i++, j++) {
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if (j >= ACPI_NUM_OWNERID_MASKS) {
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j = 0; /* Wraparound to start of mask array */
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}
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for (k = acpi_gbl_next_owner_id_offset; k < 32; k++) {
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if (acpi_gbl_owner_id_mask[j] == ACPI_UINT32_MAX) {
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/* There are no free IDs in this mask */
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break;
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}
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if (!(acpi_gbl_owner_id_mask[j] & (1 << k))) {
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/*
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* Found a free ID. The actual ID is the bit index plus one,
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* making zero an invalid Owner ID. Save this as the last ID
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* allocated and update the global ID mask.
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*/
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acpi_gbl_owner_id_mask[j] |= (1 << k);
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acpi_gbl_last_owner_id_index = (u8) j;
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acpi_gbl_next_owner_id_offset = (u8) (k + 1);
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/*
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* Construct encoded ID from the index and bit position
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*
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* Note: Last [j].k (bit 255) is never used and is marked
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* permanently allocated (prevents +1 overflow)
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*/
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*owner_id =
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(acpi_owner_id) ((k + 1) + ACPI_MUL_32(j));
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ACPI_DEBUG_PRINT((ACPI_DB_VALUES,
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"Allocated OwnerId: %2.2X\n",
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(unsigned int)*owner_id));
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goto exit;
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}
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}
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acpi_gbl_next_owner_id_offset = 0;
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}
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/*
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* All owner_ids have been allocated. This typically should
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* not happen since the IDs are reused after deallocation. The IDs are
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* allocated upon table load (one per table) and method execution, and
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* they are released when a table is unloaded or a method completes
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* execution.
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*
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* If this error happens, there may be very deep nesting of invoked control
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* methods, or there may be a bug where the IDs are not released.
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*/
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status = AE_OWNER_ID_LIMIT;
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ACPI_ERROR((AE_INFO,
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"Could not allocate new OwnerId (255 max), AE_OWNER_ID_LIMIT"));
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exit:
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(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_release_owner_id
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*
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* PARAMETERS: owner_id_ptr - Pointer to a previously allocated owner_iD
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*
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* RETURN: None. No error is returned because we are either exiting a
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* control method or unloading a table. Either way, we would
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* ignore any error anyway.
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*
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* DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 - 255
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*
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******************************************************************************/
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void acpi_ut_release_owner_id(acpi_owner_id * owner_id_ptr)
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{
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acpi_owner_id owner_id = *owner_id_ptr;
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acpi_status status;
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u32 index;
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u32 bit;
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ACPI_FUNCTION_TRACE_U32(ut_release_owner_id, owner_id);
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/* Always clear the input owner_id (zero is an invalid ID) */
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*owner_id_ptr = 0;
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/* Zero is not a valid owner_iD */
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if (owner_id == 0) {
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ACPI_ERROR((AE_INFO, "Invalid OwnerId: 0x%2.2X", owner_id));
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return_VOID;
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}
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/* Mutex for the global ID mask */
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status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
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if (ACPI_FAILURE(status)) {
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return_VOID;
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}
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/* Normalize the ID to zero */
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owner_id--;
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/* Decode ID to index/offset pair */
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index = ACPI_DIV_32(owner_id);
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bit = 1 << ACPI_MOD_32(owner_id);
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/* Free the owner ID only if it is valid */
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if (acpi_gbl_owner_id_mask[index] & bit) {
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acpi_gbl_owner_id_mask[index] ^= bit;
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} else {
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ACPI_ERROR((AE_INFO,
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"Release of non-allocated OwnerId: 0x%2.2X",
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owner_id + 1));
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}
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(void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_strupr (strupr)
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*
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* PARAMETERS: src_string - The source string to convert
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert string to uppercase
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*
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* NOTE: This is not a POSIX function, so it appears here, not in utclib.c
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*
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******************************************************************************/
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void acpi_ut_strupr(char *src_string)
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{
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char *string;
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ACPI_FUNCTION_ENTRY();
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if (!src_string) {
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return;
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}
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/* Walk entire string, uppercasing the letters */
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for (string = src_string; *string; string++) {
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*string = (char)ACPI_TOUPPER(*string);
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}
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return;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_print_string
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*
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* PARAMETERS: String - Null terminated ASCII string
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* max_length - Maximum output length
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*
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* RETURN: None
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*
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* DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
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* sequences.
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*
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******************************************************************************/
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void acpi_ut_print_string(char *string, u8 max_length)
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{
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u32 i;
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if (!string) {
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acpi_os_printf("<\"NULL STRING PTR\">");
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return;
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}
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acpi_os_printf("\"");
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for (i = 0; string[i] && (i < max_length); i++) {
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/* Escape sequences */
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switch (string[i]) {
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case 0x07:
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acpi_os_printf("\\a"); /* BELL */
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break;
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case 0x08:
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acpi_os_printf("\\b"); /* BACKSPACE */
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break;
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case 0x0C:
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acpi_os_printf("\\f"); /* FORMFEED */
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break;
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case 0x0A:
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acpi_os_printf("\\n"); /* LINEFEED */
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break;
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case 0x0D:
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acpi_os_printf("\\r"); /* CARRIAGE RETURN */
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break;
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case 0x09:
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acpi_os_printf("\\t"); /* HORIZONTAL TAB */
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break;
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case 0x0B:
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acpi_os_printf("\\v"); /* VERTICAL TAB */
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break;
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case '\'': /* Single Quote */
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case '\"': /* Double Quote */
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case '\\': /* Backslash */
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acpi_os_printf("\\%c", (int)string[i]);
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break;
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default:
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/* Check for printable character or hex escape */
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if (ACPI_IS_PRINT(string[i])) {
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/* This is a normal character */
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acpi_os_printf("%c", (int)string[i]);
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} else {
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/* All others will be Hex escapes */
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acpi_os_printf("\\x%2.2X", (s32) string[i]);
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}
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break;
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}
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}
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acpi_os_printf("\"");
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if (i == max_length && string[i]) {
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acpi_os_printf("...");
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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_dword_byte_swap
|
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*
|
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* PARAMETERS: Value - Value to be converted
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*
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* RETURN: u32 integer with bytes swapped
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*
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* DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
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*
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******************************************************************************/
|
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u32 acpi_ut_dword_byte_swap(u32 value)
|
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{
|
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union {
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u32 value;
|
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u8 bytes[4];
|
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} out;
|
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union {
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u32 value;
|
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u8 bytes[4];
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} in;
|
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|
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ACPI_FUNCTION_ENTRY();
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|
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in.value = value;
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out.bytes[0] = in.bytes[3];
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out.bytes[1] = in.bytes[2];
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out.bytes[2] = in.bytes[1];
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out.bytes[3] = in.bytes[0];
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|
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return (out.value);
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}
|
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|
|
/*******************************************************************************
|
|
*
|
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* FUNCTION: acpi_ut_set_integer_width
|
|
*
|
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* PARAMETERS: Revision From DSDT header
|
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*
|
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* 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.
|
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* For Revision 2 and above, Integers are 64 bits. Yes, this
|
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* makes a difference.
|
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*
|
|
******************************************************************************/
|
|
|
|
void acpi_ut_set_integer_width(u8 revision)
|
|
{
|
|
|
|
if (revision < 2) {
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|
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/* 32-bit case */
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acpi_gbl_integer_bit_width = 32;
|
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acpi_gbl_integer_nybble_width = 8;
|
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acpi_gbl_integer_byte_width = 4;
|
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} else {
|
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/* 64-bit case (ACPI 2.0+) */
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|
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acpi_gbl_integer_bit_width = 64;
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acpi_gbl_integer_nybble_width = 16;
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acpi_gbl_integer_byte_width = 8;
|
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}
|
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}
|
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|
|
#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, u64 * ret_integer)
|
|
{
|
|
u32 this_digit = 0;
|
|
u64 return_value = 0;
|
|
u64 quotient;
|
|
u64 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 - (u64) this_digit),
|
|
base, "ient, 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)
|
|
|| (this_source_obj->common.type != 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);
|
|
}
|