aboutsummaryrefslogtreecommitdiff
path: root/drivers/acpi/parser/psargs.c
diff options
context:
space:
mode:
authorLen Brown <len.brown@intel.com>2009-01-09 00:13:17 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:30:47 -0500
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/parser/psargs.c
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/parser/psargs.c')
-rw-r--r--drivers/acpi/parser/psargs.c752
1 files changed, 0 insertions, 752 deletions
diff --git a/drivers/acpi/parser/psargs.c b/drivers/acpi/parser/psargs.c
deleted file mode 100644
index 852f3a83b2e..00000000000
--- a/drivers/acpi/parser/psargs.c
+++ /dev/null
@@ -1,752 +0,0 @@
-/******************************************************************************
- *
- * Module Name: psargs - Parse AML opcode arguments
- *
- *****************************************************************************/
-
-/*
- * 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 <acpi/acpi.h>
-#include <acpi/accommon.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdispat.h>
-
-#define _COMPONENT ACPI_PARSER
-ACPI_MODULE_NAME("psargs")
-
-/* Local prototypes */
-static u32
-acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state);
-
-static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
- *parser_state);
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_next_package_length
- *
- * PARAMETERS: parser_state - Current parser state object
- *
- * RETURN: Decoded package length. On completion, the AML pointer points
- * past the length byte or bytes.
- *
- * DESCRIPTION: Decode and return a package length field.
- * Note: Largest package length is 28 bits, from ACPI specification
- *
- ******************************************************************************/
-
-static u32
-acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state)
-{
- u8 *aml = parser_state->aml;
- u32 package_length = 0;
- u32 byte_count;
- u8 byte_zero_mask = 0x3F; /* Default [0:5] */
-
- ACPI_FUNCTION_TRACE(ps_get_next_package_length);
-
- /*
- * Byte 0 bits [6:7] contain the number of additional bytes
- * used to encode the package length, either 0,1,2, or 3
- */
- byte_count = (aml[0] >> 6);
- parser_state->aml += ((acpi_size) byte_count + 1);
-
- /* Get bytes 3, 2, 1 as needed */
-
- while (byte_count) {
- /*
- * Final bit positions for the package length bytes:
- * Byte3->[20:27]
- * Byte2->[12:19]
- * Byte1->[04:11]
- * Byte0->[00:03]
- */
- package_length |= (aml[byte_count] << ((byte_count << 3) - 4));
-
- byte_zero_mask = 0x0F; /* Use bits [0:3] of byte 0 */
- byte_count--;
- }
-
- /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */
-
- package_length |= (aml[0] & byte_zero_mask);
- return_UINT32(package_length);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_next_package_end
- *
- * PARAMETERS: parser_state - Current parser state object
- *
- * RETURN: Pointer to end-of-package +1
- *
- * DESCRIPTION: Get next package length and return a pointer past the end of
- * the package. Consumes the package length field
- *
- ******************************************************************************/
-
-u8 *acpi_ps_get_next_package_end(struct acpi_parse_state *parser_state)
-{
- u8 *start = parser_state->aml;
- u32 package_length;
-
- ACPI_FUNCTION_TRACE(ps_get_next_package_end);
-
- /* Function below updates parser_state->Aml */
-
- package_length = acpi_ps_get_next_package_length(parser_state);
-
- return_PTR(start + package_length); /* end of package */
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_next_namestring
- *
- * PARAMETERS: parser_state - Current parser state object
- *
- * RETURN: Pointer to the start of the name string (pointer points into
- * the AML.
- *
- * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name
- * prefix characters. Set parser state to point past the string.
- * (Name is consumed from the AML.)
- *
- ******************************************************************************/
-
-char *acpi_ps_get_next_namestring(struct acpi_parse_state *parser_state)
-{
- u8 *start = parser_state->aml;
- u8 *end = parser_state->aml;
-
- ACPI_FUNCTION_TRACE(ps_get_next_namestring);
-
- /* Point past any namestring prefix characters (backslash or carat) */
-
- while (acpi_ps_is_prefix_char(*end)) {
- end++;
- }
-
- /* Decode the path prefix character */
-
- switch (*end) {
- case 0:
-
- /* null_name */
-
- if (end == start) {
- start = NULL;
- }
- end++;
- break;
-
- case AML_DUAL_NAME_PREFIX:
-
- /* Two name segments */
-
- end += 1 + (2 * ACPI_NAME_SIZE);
- break;
-
- case AML_MULTI_NAME_PREFIX_OP:
-
- /* Multiple name segments, 4 chars each, count in next byte */
-
- end += 2 + (*(end + 1) * ACPI_NAME_SIZE);
- break;
-
- default:
-
- /* Single name segment */
-
- end += ACPI_NAME_SIZE;
- break;
- }
-
- parser_state->aml = end;
- return_PTR((char *)start);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_next_namepath
- *
- * PARAMETERS: parser_state - Current parser state object
- * Arg - Where the namepath will be stored
- * arg_count - If the namepath points to a control method
- * the method's argument is returned here.
- * possible_method_call - Whether the namepath can possibly be the
- * start of a method call
- *
- * RETURN: Status
- *
- * DESCRIPTION: Get next name (if method call, return # of required args).
- * Names are looked up in the internal namespace to determine
- * if the name represents a control method. If a method
- * is found, the number of arguments to the method is returned.
- * This information is critical for parsing to continue correctly.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
- struct acpi_parse_state *parser_state,
- union acpi_parse_object *arg, u8 possible_method_call)
-{
- acpi_status status;
- char *path;
- union acpi_parse_object *name_op;
- union acpi_operand_object *method_desc;
- struct acpi_namespace_node *node;
- u8 *start = parser_state->aml;
-
- ACPI_FUNCTION_TRACE(ps_get_next_namepath);
-
- path = acpi_ps_get_next_namestring(parser_state);
- acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP);
-
- /* Null path case is allowed, just exit */
-
- if (!path) {
- arg->common.value.name = path;
- return_ACPI_STATUS(AE_OK);
- }
-
- /*
- * Lookup the name in the internal namespace, starting with the current
- * scope. We don't want to add anything new to the namespace here,
- * however, so we use MODE_EXECUTE.
- * Allow searching of the parent tree, but don't open a new scope -
- * we just want to lookup the object (must be mode EXECUTE to perform
- * the upsearch)
- */
- status = acpi_ns_lookup(walk_state->scope_info, path,
- ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
- ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
- NULL, &node);
-
- /*
- * If this name is a control method invocation, we must
- * setup the method call
- */
- if (ACPI_SUCCESS(status) &&
- possible_method_call && (node->type == ACPI_TYPE_METHOD)) {
- if (walk_state->opcode == AML_UNLOAD_OP) {
- /*
- * acpi_ps_get_next_namestring has increased the AML pointer,
- * so we need to restore the saved AML pointer for method call.
- */
- walk_state->parser_state.aml = start;
- walk_state->arg_count = 1;
- acpi_ps_init_op(arg, AML_INT_METHODCALL_OP);
- return_ACPI_STATUS(AE_OK);
- }
-
- /* This name is actually a control method invocation */
-
- method_desc = acpi_ns_get_attached_object(node);
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
- "Control Method - %p Desc %p Path=%p\n", node,
- method_desc, path));
-
- name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
- if (!name_op) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- /* Change Arg into a METHOD CALL and attach name to it */
-
- acpi_ps_init_op(arg, AML_INT_METHODCALL_OP);
- name_op->common.value.name = path;
-
- /* Point METHODCALL/NAME to the METHOD Node */
-
- name_op->common.node = node;
- acpi_ps_append_arg(arg, name_op);
-
- if (!method_desc) {
- ACPI_ERROR((AE_INFO,
- "Control Method %p has no attached object",
- node));
- return_ACPI_STATUS(AE_AML_INTERNAL);
- }
-
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
- "Control Method - %p Args %X\n",
- node, method_desc->method.param_count));
-
- /* Get the number of arguments to expect */
-
- walk_state->arg_count = method_desc->method.param_count;
- return_ACPI_STATUS(AE_OK);
- }
-
- /*
- * Special handling if the name was not found during the lookup -
- * some not_found cases are allowed
- */
- if (status == AE_NOT_FOUND) {
-
- /* 1) not_found is ok during load pass 1/2 (allow forward references) */
-
- if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) !=
- ACPI_PARSE_EXECUTE) {
- status = AE_OK;
- }
-
- /* 2) not_found during a cond_ref_of(x) is ok by definition */
-
- else if (walk_state->op->common.aml_opcode ==
- AML_COND_REF_OF_OP) {
- status = AE_OK;
- }
-
- /*
- * 3) not_found while building a Package is ok at this point, we
- * may flag as an error later if slack mode is not enabled.
- * (Some ASL code depends on allowing this behavior)
- */
- else if ((arg->common.parent) &&
- ((arg->common.parent->common.aml_opcode ==
- AML_PACKAGE_OP)
- || (arg->common.parent->common.aml_opcode ==
- AML_VAR_PACKAGE_OP))) {
- status = AE_OK;
- }
- }
-
- /* Final exception check (may have been changed from code above) */
-
- if (ACPI_FAILURE(status)) {
- ACPI_ERROR_NAMESPACE(path, status);
-
- if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) ==
- ACPI_PARSE_EXECUTE) {
-
- /* Report a control method execution error */
-
- status = acpi_ds_method_error(status, walk_state);
- }
- }
-
- /* Save the namepath */
-
- arg->common.value.name = path;
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_next_simple_arg
- *
- * PARAMETERS: parser_state - Current parser state object
- * arg_type - The argument type (AML_*_ARG)
- * Arg - Where the argument is returned
- *
- * RETURN: None
- *
- * DESCRIPTION: Get the next simple argument (constant, string, or namestring)
- *
- ******************************************************************************/
-
-void
-acpi_ps_get_next_simple_arg(struct acpi_parse_state *parser_state,
- u32 arg_type, union acpi_parse_object *arg)
-{
- u32 length;
- u16 opcode;
- u8 *aml = parser_state->aml;
-
- ACPI_FUNCTION_TRACE_U32(ps_get_next_simple_arg, arg_type);
-
- switch (arg_type) {
- case ARGP_BYTEDATA:
-
- /* Get 1 byte from the AML stream */
-
- opcode = AML_BYTE_OP;
- arg->common.value.integer = (acpi_integer) * aml;
- length = 1;
- break;
-
- case ARGP_WORDDATA:
-
- /* Get 2 bytes from the AML stream */
-
- opcode = AML_WORD_OP;
- ACPI_MOVE_16_TO_64(&arg->common.value.integer, aml);
- length = 2;
- break;
-
- case ARGP_DWORDDATA:
-
- /* Get 4 bytes from the AML stream */
-
- opcode = AML_DWORD_OP;
- ACPI_MOVE_32_TO_64(&arg->common.value.integer, aml);
- length = 4;
- break;
-
- case ARGP_QWORDDATA:
-
- /* Get 8 bytes from the AML stream */
-
- opcode = AML_QWORD_OP;
- ACPI_MOVE_64_TO_64(&arg->common.value.integer, aml);
- length = 8;
- break;
-
- case ARGP_CHARLIST:
-
- /* Get a pointer to the string, point past the string */
-
- opcode = AML_STRING_OP;
- arg->common.value.string = ACPI_CAST_PTR(char, aml);
-
- /* Find the null terminator */
-
- length = 0;
- while (aml[length]) {
- length++;
- }
- length++;
- break;
-
- case ARGP_NAME:
- case ARGP_NAMESTRING:
-
- acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP);
- arg->common.value.name =
- acpi_ps_get_next_namestring(parser_state);
- return_VOID;
-
- default:
-
- ACPI_ERROR((AE_INFO, "Invalid ArgType %X", arg_type));
- return_VOID;
- }
-
- acpi_ps_init_op(arg, opcode);
- parser_state->aml += length;
- return_VOID;
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_next_field
- *
- * PARAMETERS: parser_state - Current parser state object
- *
- * RETURN: A newly allocated FIELD op
- *
- * DESCRIPTION: Get next field (named_field, reserved_field, or access_field)
- *
- ******************************************************************************/
-
-static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
- *parser_state)
-{
- u32 aml_offset = (u32)
- ACPI_PTR_DIFF(parser_state->aml,
- parser_state->aml_start);
- union acpi_parse_object *field;
- u16 opcode;
- u32 name;
-
- ACPI_FUNCTION_TRACE(ps_get_next_field);
-
- /* Determine field type */
-
- switch (ACPI_GET8(parser_state->aml)) {
- default:
-
- opcode = AML_INT_NAMEDFIELD_OP;
- break;
-
- case 0x00:
-
- opcode = AML_INT_RESERVEDFIELD_OP;
- parser_state->aml++;
- break;
-
- case 0x01:
-
- opcode = AML_INT_ACCESSFIELD_OP;
- parser_state->aml++;
- break;
- }
-
- /* Allocate a new field op */
-
- field = acpi_ps_alloc_op(opcode);
- if (!field) {
- return_PTR(NULL);
- }
-
- field->common.aml_offset = aml_offset;
-
- /* Decode the field type */
-
- switch (opcode) {
- case AML_INT_NAMEDFIELD_OP:
-
- /* Get the 4-character name */
-
- ACPI_MOVE_32_TO_32(&name, parser_state->aml);
- acpi_ps_set_name(field, name);
- parser_state->aml += ACPI_NAME_SIZE;
-
- /* Get the length which is encoded as a package length */
-
- field->common.value.size =
- acpi_ps_get_next_package_length(parser_state);
- break;
-
- case AML_INT_RESERVEDFIELD_OP:
-
- /* Get the length which is encoded as a package length */
-
- field->common.value.size =
- acpi_ps_get_next_package_length(parser_state);
- break;
-
- case AML_INT_ACCESSFIELD_OP:
-
- /*
- * Get access_type and access_attrib and merge into the field Op
- * access_type is first operand, access_attribute is second
- */
- field->common.value.integer =
- (((u32) ACPI_GET8(parser_state->aml) << 8));
- parser_state->aml++;
- field->common.value.integer |= ACPI_GET8(parser_state->aml);
- parser_state->aml++;
- break;
-
- default:
-
- /* Opcode was set in previous switch */
- break;
- }
-
- return_PTR(field);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_next_arg
- *
- * PARAMETERS: walk_state - Current state
- * parser_state - Current parser state object
- * arg_type - The argument type (AML_*_ARG)
- * return_arg - Where the next arg is returned
- *
- * RETURN: Status, and an op object containing the next argument.
- *
- * DESCRIPTION: Get next argument (including complex list arguments that require
- * pushing the parser stack)
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
- struct acpi_parse_state *parser_state,
- u32 arg_type, union acpi_parse_object **return_arg)
-{
- union acpi_parse_object *arg = NULL;
- union acpi_parse_object *prev = NULL;
- union acpi_parse_object *field;
- u32 subop;
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE_PTR(ps_get_next_arg, parser_state);
-
- switch (arg_type) {
- case ARGP_BYTEDATA:
- case ARGP_WORDDATA:
- case ARGP_DWORDDATA:
- case ARGP_CHARLIST:
- case ARGP_NAME:
- case ARGP_NAMESTRING:
-
- /* Constants, strings, and namestrings are all the same size */
-
- arg = acpi_ps_alloc_op(AML_BYTE_OP);
- if (!arg) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
- acpi_ps_get_next_simple_arg(parser_state, arg_type, arg);
- break;
-
- case ARGP_PKGLENGTH:
-
- /* Package length, nothing returned */
-
- parser_state->pkg_end =
- acpi_ps_get_next_package_end(parser_state);
- break;
-
- case ARGP_FIELDLIST:
-
- if (parser_state->aml < parser_state->pkg_end) {
-
- /* Non-empty list */
-
- while (parser_state->aml < parser_state->pkg_end) {
- field = acpi_ps_get_next_field(parser_state);
- if (!field) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- if (prev) {
- prev->common.next = field;
- } else {
- arg = field;
- }
- prev = field;
- }
-
- /* Skip to End of byte data */
-
- parser_state->aml = parser_state->pkg_end;
- }
- break;
-
- case ARGP_BYTELIST:
-
- if (parser_state->aml < parser_state->pkg_end) {
-
- /* Non-empty list */
-
- arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP);
- if (!arg) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- /* Fill in bytelist data */
-
- arg->common.value.size = (u32)
- ACPI_PTR_DIFF(parser_state->pkg_end,
- parser_state->aml);
- arg->named.data = parser_state->aml;
-
- /* Skip to End of byte data */
-
- parser_state->aml = parser_state->pkg_end;
- }
- break;
-
- case ARGP_TARGET:
- case ARGP_SUPERNAME:
- case ARGP_SIMPLENAME:
-
- subop = acpi_ps_peek_opcode(parser_state);
- if (subop == 0 ||
- acpi_ps_is_leading_char(subop) ||
- acpi_ps_is_prefix_char(subop)) {
-
- /* null_name or name_string */
-
- arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
- if (!arg) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- /* To support super_name arg of Unload */
-
- if (walk_state->opcode == AML_UNLOAD_OP) {
- status =
- acpi_ps_get_next_namepath(walk_state,
- parser_state, arg,
- 1);
-
- /*
- * If the super_name arg of Unload is a method call,
- * we have restored the AML pointer, just free this Arg
- */
- if (arg->common.aml_opcode ==
- AML_INT_METHODCALL_OP) {
- acpi_ps_free_op(arg);
- arg = NULL;
- }
- } else {
- status =
- acpi_ps_get_next_namepath(walk_state,
- parser_state, arg,
- 0);
- }
- } else {
- /* Single complex argument, nothing returned */
-
- walk_state->arg_count = 1;
- }
- break;
-
- case ARGP_DATAOBJ:
- case ARGP_TERMARG:
-
- /* Single complex argument, nothing returned */
-
- walk_state->arg_count = 1;
- break;
-
- case ARGP_DATAOBJLIST:
- case ARGP_TERMLIST:
- case ARGP_OBJLIST:
-
- if (parser_state->aml < parser_state->pkg_end) {
-
- /* Non-empty list of variable arguments, nothing returned */
-
- walk_state->arg_count = ACPI_VAR_ARGS;
- }
- break;
-
- default:
-
- ACPI_ERROR((AE_INFO, "Invalid ArgType: %X", arg_type));
- status = AE_AML_OPERAND_TYPE;
- break;
- }
-
- *return_arg = arg;
- return_ACPI_STATUS(status);
-}