195857638SErik Schmauss // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
295b482a8SLen Brown /******************************************************************************
395b482a8SLen Brown *
49ad19ac4SBob Moore * Module Name: dswload - Dispatcher first pass namespace load callbacks
595b482a8SLen Brown *
6*612c2932SBob Moore * Copyright (C) 2000 - 2023, Intel Corp.
795b482a8SLen Brown *
895857638SErik Schmauss *****************************************************************************/
995b482a8SLen Brown
1095b482a8SLen Brown #include <acpi/acpi.h>
11e2f7a777SLen Brown #include "accommon.h"
12e2f7a777SLen Brown #include "acparser.h"
13e2f7a777SLen Brown #include "amlcode.h"
14e2f7a777SLen Brown #include "acdispat.h"
15e2f7a777SLen Brown #include "acinterp.h"
16e2f7a777SLen Brown #include "acnamesp.h"
1795b482a8SLen Brown #ifdef ACPI_ASL_COMPILER
1856324c10SLv Zheng #include "acdisasm.h"
1995b482a8SLen Brown #endif
2095b482a8SLen Brown
2195b482a8SLen Brown #define _COMPONENT ACPI_DISPATCHER
2295b482a8SLen Brown ACPI_MODULE_NAME("dswload")
2395b482a8SLen Brown
2495b482a8SLen Brown /*******************************************************************************
2595b482a8SLen Brown *
2695b482a8SLen Brown * FUNCTION: acpi_ds_init_callbacks
2795b482a8SLen Brown *
2895b482a8SLen Brown * PARAMETERS: walk_state - Current state of the parse tree walk
2995b482a8SLen Brown * pass_number - 1, 2, or 3
3095b482a8SLen Brown *
3195b482a8SLen Brown * RETURN: Status
3295b482a8SLen Brown *
3395b482a8SLen Brown * DESCRIPTION: Init walk state callbacks
3495b482a8SLen Brown *
3595b482a8SLen Brown ******************************************************************************/
3695b482a8SLen Brown acpi_status
acpi_ds_init_callbacks(struct acpi_walk_state * walk_state,u32 pass_number)3795b482a8SLen Brown acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number)
3895b482a8SLen Brown {
3995b482a8SLen Brown
4095b482a8SLen Brown switch (pass_number) {
4122b5afceSBob Moore case 0:
4222b5afceSBob Moore
4322b5afceSBob Moore /* Parse only - caller will setup callbacks */
4422b5afceSBob Moore
4522b5afceSBob Moore walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
4622b5afceSBob Moore ACPI_PARSE_DELETE_TREE | ACPI_PARSE_DISASSEMBLE;
4722b5afceSBob Moore walk_state->descending_callback = NULL;
4822b5afceSBob Moore walk_state->ascending_callback = NULL;
4922b5afceSBob Moore break;
5022b5afceSBob Moore
5195b482a8SLen Brown case 1:
521d1ea1b7SChao Guan
5322b5afceSBob Moore /* Load pass 1 */
5422b5afceSBob Moore
5595b482a8SLen Brown walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
5695b482a8SLen Brown ACPI_PARSE_DELETE_TREE;
5795b482a8SLen Brown walk_state->descending_callback = acpi_ds_load1_begin_op;
5895b482a8SLen Brown walk_state->ascending_callback = acpi_ds_load1_end_op;
5995b482a8SLen Brown break;
6095b482a8SLen Brown
6195b482a8SLen Brown case 2:
621d1ea1b7SChao Guan
6322b5afceSBob Moore /* Load pass 2 */
6422b5afceSBob Moore
6595b482a8SLen Brown walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
6695b482a8SLen Brown ACPI_PARSE_DELETE_TREE;
6795b482a8SLen Brown walk_state->descending_callback = acpi_ds_load2_begin_op;
6895b482a8SLen Brown walk_state->ascending_callback = acpi_ds_load2_end_op;
6995b482a8SLen Brown break;
7095b482a8SLen Brown
7195b482a8SLen Brown case 3:
721d1ea1b7SChao Guan
7322b5afceSBob Moore /* Execution pass */
7422b5afceSBob Moore
7595b482a8SLen Brown walk_state->parse_flags |= ACPI_PARSE_EXECUTE |
7695b482a8SLen Brown ACPI_PARSE_DELETE_TREE;
7795b482a8SLen Brown walk_state->descending_callback = acpi_ds_exec_begin_op;
7895b482a8SLen Brown walk_state->ascending_callback = acpi_ds_exec_end_op;
7995b482a8SLen Brown break;
8095b482a8SLen Brown
8195b482a8SLen Brown default:
821d1ea1b7SChao Guan
8395b482a8SLen Brown return (AE_BAD_PARAMETER);
8495b482a8SLen Brown }
8595b482a8SLen Brown
8695b482a8SLen Brown return (AE_OK);
8795b482a8SLen Brown }
8895b482a8SLen Brown
8995b482a8SLen Brown /*******************************************************************************
9095b482a8SLen Brown *
9195b482a8SLen Brown * FUNCTION: acpi_ds_load1_begin_op
9295b482a8SLen Brown *
9395b482a8SLen Brown * PARAMETERS: walk_state - Current state of the parse tree walk
9495b482a8SLen Brown * out_op - Where to return op if a new one is created
9595b482a8SLen Brown *
9695b482a8SLen Brown * RETURN: Status
9795b482a8SLen Brown *
9895b482a8SLen Brown * DESCRIPTION: Descending callback used during the loading of ACPI tables.
9995b482a8SLen Brown *
10095b482a8SLen Brown ******************************************************************************/
10195b482a8SLen Brown
10295b482a8SLen Brown acpi_status
acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,union acpi_parse_object ** out_op)10395b482a8SLen Brown acpi_ds_load1_begin_op(struct acpi_walk_state *walk_state,
10495b482a8SLen Brown union acpi_parse_object **out_op)
10595b482a8SLen Brown {
10695b482a8SLen Brown union acpi_parse_object *op;
10795b482a8SLen Brown struct acpi_namespace_node *node;
10895b482a8SLen Brown acpi_status status;
10995b482a8SLen Brown acpi_object_type object_type;
11095b482a8SLen Brown char *path;
11195b482a8SLen Brown u32 flags;
11295b482a8SLen Brown
1131ef63231SBob Moore ACPI_FUNCTION_TRACE_PTR(ds_load1_begin_op, walk_state->op);
11495b482a8SLen Brown
11595b482a8SLen Brown op = walk_state->op;
11695b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
11795b482a8SLen Brown walk_state));
11895b482a8SLen Brown
11995b482a8SLen Brown /* We are only interested in opcodes that have an associated name */
12095b482a8SLen Brown
12195b482a8SLen Brown if (op) {
12295b482a8SLen Brown if (!(walk_state->op_info->flags & AML_NAMED)) {
12395b482a8SLen Brown *out_op = op;
12495b482a8SLen Brown return_ACPI_STATUS(AE_OK);
12595b482a8SLen Brown }
12695b482a8SLen Brown
12795b482a8SLen Brown /* Check if this object has already been installed in the namespace */
12895b482a8SLen Brown
12995b482a8SLen Brown if (op->common.node) {
13095b482a8SLen Brown *out_op = op;
13195b482a8SLen Brown return_ACPI_STATUS(AE_OK);
13295b482a8SLen Brown }
13395b482a8SLen Brown }
13495b482a8SLen Brown
13595b482a8SLen Brown path = acpi_ps_get_next_namestring(&walk_state->parser_state);
13695b482a8SLen Brown
13795b482a8SLen Brown /* Map the raw opcode into an internal object type */
13895b482a8SLen Brown
13995b482a8SLen Brown object_type = walk_state->op_info->object_type;
14095b482a8SLen Brown
14195b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
14295b482a8SLen Brown "State=%p Op=%p [%s]\n", walk_state, op,
14395b482a8SLen Brown acpi_ut_get_type_name(object_type)));
14495b482a8SLen Brown
14595b482a8SLen Brown switch (walk_state->opcode) {
14695b482a8SLen Brown case AML_SCOPE_OP:
14795b482a8SLen Brown /*
14895b482a8SLen Brown * The target name of the Scope() operator must exist at this point so
14995b482a8SLen Brown * that we can actually open the scope to enter new names underneath it.
15095b482a8SLen Brown * Allow search-to-root for single namesegs.
15195b482a8SLen Brown */
15295b482a8SLen Brown status =
15395b482a8SLen Brown acpi_ns_lookup(walk_state->scope_info, path, object_type,
15495b482a8SLen Brown ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
15595b482a8SLen Brown walk_state, &(node));
15695b482a8SLen Brown #ifdef ACPI_ASL_COMPILER
15795b482a8SLen Brown if (status == AE_NOT_FOUND) {
15895b482a8SLen Brown /*
15995b482a8SLen Brown * Table disassembly:
16095b482a8SLen Brown * Target of Scope() not found. Generate an External for it, and
16195b482a8SLen Brown * insert the name into the namespace.
16295b482a8SLen Brown */
1635af2b635SBob Moore acpi_dm_add_op_to_external_list(op, path,
1645af2b635SBob Moore ACPI_TYPE_DEVICE, 0, 0);
16595b482a8SLen Brown status =
16695b482a8SLen Brown acpi_ns_lookup(walk_state->scope_info, path,
16795b482a8SLen Brown object_type, ACPI_IMODE_LOAD_PASS1,
16895b482a8SLen Brown ACPI_NS_SEARCH_PARENT, walk_state,
16995b482a8SLen Brown &node);
17095b482a8SLen Brown }
17195b482a8SLen Brown #endif
17295b482a8SLen Brown if (ACPI_FAILURE(status)) {
17316ccf829SBob Moore ACPI_ERROR_NAMESPACE(walk_state->scope_info, path,
17416ccf829SBob Moore status);
17595b482a8SLen Brown return_ACPI_STATUS(status);
17695b482a8SLen Brown }
17795b482a8SLen Brown
17895b482a8SLen Brown /*
17995b482a8SLen Brown * Check to make sure that the target is
18095b482a8SLen Brown * one of the opcodes that actually opens a scope
18195b482a8SLen Brown */
18295b482a8SLen Brown switch (node->type) {
18395b482a8SLen Brown case ACPI_TYPE_ANY:
18495b482a8SLen Brown case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
18595b482a8SLen Brown case ACPI_TYPE_DEVICE:
18695b482a8SLen Brown case ACPI_TYPE_POWER:
18795b482a8SLen Brown case ACPI_TYPE_PROCESSOR:
18895b482a8SLen Brown case ACPI_TYPE_THERMAL:
18995b482a8SLen Brown
19095b482a8SLen Brown /* These are acceptable types */
19195b482a8SLen Brown break;
19295b482a8SLen Brown
19395b482a8SLen Brown case ACPI_TYPE_INTEGER:
19495b482a8SLen Brown case ACPI_TYPE_STRING:
19595b482a8SLen Brown case ACPI_TYPE_BUFFER:
19695b482a8SLen Brown /*
197f2cb1251SBob Moore * These types we will allow, but we will change the type.
198f2cb1251SBob Moore * This enables some existing code of the form:
19995b482a8SLen Brown *
20095b482a8SLen Brown * Name (DEB, 0)
20195b482a8SLen Brown * Scope (DEB) { ... }
20295b482a8SLen Brown *
203f2cb1251SBob Moore * Note: silently change the type here. On the second pass,
204f2cb1251SBob Moore * we will report a warning
20595b482a8SLen Brown */
20695b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_INFO,
207f2cb1251SBob Moore "Type override - [%4.4s] had invalid type (%s) "
208f2cb1251SBob Moore "for Scope operator, changed to type ANY\n",
209f2cb1251SBob Moore acpi_ut_get_node_name(node),
21095b482a8SLen Brown acpi_ut_get_type_name(node->type)));
21195b482a8SLen Brown
21295b482a8SLen Brown node->type = ACPI_TYPE_ANY;
21395b482a8SLen Brown walk_state->scope_info->common.value = ACPI_TYPE_ANY;
21495b482a8SLen Brown break;
21595b482a8SLen Brown
21628f538b5SBob Moore case ACPI_TYPE_METHOD:
21728f538b5SBob Moore /*
21828f538b5SBob Moore * Allow scope change to root during execution of module-level
21928f538b5SBob Moore * code. Root is typed METHOD during this time.
22028f538b5SBob Moore */
22128f538b5SBob Moore if ((node == acpi_gbl_root_node) &&
22228f538b5SBob Moore (walk_state->
22328f538b5SBob Moore parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
22428f538b5SBob Moore break;
22528f538b5SBob Moore }
22628f538b5SBob Moore
227c1a7c2ceSNick Desaulniers ACPI_FALLTHROUGH;
22828f538b5SBob Moore
22995b482a8SLen Brown default:
23095b482a8SLen Brown
23195b482a8SLen Brown /* All other types are an error */
23295b482a8SLen Brown
23395b482a8SLen Brown ACPI_ERROR((AE_INFO,
234f2cb1251SBob Moore "Invalid type (%s) for target of "
235f2cb1251SBob Moore "Scope operator [%4.4s] (Cannot override)",
236f2cb1251SBob Moore acpi_ut_get_type_name(node->type),
237f2cb1251SBob Moore acpi_ut_get_node_name(node)));
23895b482a8SLen Brown
23995b482a8SLen Brown return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
24095b482a8SLen Brown }
24195b482a8SLen Brown break;
24295b482a8SLen Brown
24395b482a8SLen Brown default:
24495b482a8SLen Brown /*
24595b482a8SLen Brown * For all other named opcodes, we will enter the name into
24695b482a8SLen Brown * the namespace.
24795b482a8SLen Brown *
24895b482a8SLen Brown * Setup the search flags.
24995b482a8SLen Brown * Since we are entering a name into the namespace, we do not want to
25095b482a8SLen Brown * enable the search-to-root upsearch.
25195b482a8SLen Brown *
25295b482a8SLen Brown * There are only two conditions where it is acceptable that the name
25395b482a8SLen Brown * already exists:
25495b482a8SLen Brown * 1) the Scope() operator can reopen a scoping object that was
25595b482a8SLen Brown * previously defined (Scope, Method, Device, etc.)
25695b482a8SLen Brown * 2) Whenever we are parsing a deferred opcode (op_region, Buffer,
25795b482a8SLen Brown * buffer_field, or Package), the name of the object is already
25895b482a8SLen Brown * in the namespace.
25995b482a8SLen Brown */
26095b482a8SLen Brown if (walk_state->deferred_node) {
26195b482a8SLen Brown
26295b482a8SLen Brown /* This name is already in the namespace, get the node */
26395b482a8SLen Brown
26495b482a8SLen Brown node = walk_state->deferred_node;
26595b482a8SLen Brown status = AE_OK;
26695b482a8SLen Brown break;
26795b482a8SLen Brown }
26895b482a8SLen Brown
26995b482a8SLen Brown /*
27095b482a8SLen Brown * If we are executing a method, do not create any namespace objects
27195b482a8SLen Brown * during the load phase, only during execution.
27295b482a8SLen Brown */
27395b482a8SLen Brown if (walk_state->method_node) {
27495b482a8SLen Brown node = NULL;
27595b482a8SLen Brown status = AE_OK;
27695b482a8SLen Brown break;
27795b482a8SLen Brown }
27895b482a8SLen Brown
27995b482a8SLen Brown flags = ACPI_NS_NO_UPSEARCH;
28095b482a8SLen Brown if ((walk_state->opcode != AML_SCOPE_OP) &&
28195b482a8SLen Brown (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) {
2828f6f0361SLv Zheng if (walk_state->namespace_override) {
2838f6f0361SLv Zheng flags |= ACPI_NS_OVERRIDE_IF_FOUND;
2848f6f0361SLv Zheng ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
2858f6f0361SLv Zheng "[%s] Override allowed\n",
2868f6f0361SLv Zheng acpi_ut_get_type_name
2878f6f0361SLv Zheng (object_type)));
2888f6f0361SLv Zheng } else {
28995b482a8SLen Brown flags |= ACPI_NS_ERROR_IF_FOUND;
29095b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
29195b482a8SLen Brown "[%s] Cannot already exist\n",
2928f6f0361SLv Zheng acpi_ut_get_type_name
2938f6f0361SLv Zheng (object_type)));
2948f6f0361SLv Zheng }
29595b482a8SLen Brown } else {
29695b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
29795b482a8SLen Brown "[%s] Both Find or Create allowed\n",
29895b482a8SLen Brown acpi_ut_get_type_name(object_type)));
29995b482a8SLen Brown }
30095b482a8SLen Brown
30195b482a8SLen Brown /*
30295b482a8SLen Brown * Enter the named type into the internal namespace. We enter the name
30395b482a8SLen Brown * as we go downward in the parse tree. Any necessary subobjects that
30495b482a8SLen Brown * involve arguments to the opcode must be created as we go back up the
30595b482a8SLen Brown * parse tree later.
30695b482a8SLen Brown */
30795b482a8SLen Brown status =
30895b482a8SLen Brown acpi_ns_lookup(walk_state->scope_info, path, object_type,
30995b482a8SLen Brown ACPI_IMODE_LOAD_PASS1, flags, walk_state,
31095b482a8SLen Brown &node);
31195b482a8SLen Brown if (ACPI_FAILURE(status)) {
31295b482a8SLen Brown if (status == AE_ALREADY_EXISTS) {
31395b482a8SLen Brown
31495b482a8SLen Brown /* The name already exists in this scope */
31595b482a8SLen Brown
31695b482a8SLen Brown if (node->flags & ANOBJ_IS_EXTERNAL) {
31795b482a8SLen Brown /*
31895b482a8SLen Brown * Allow one create on an object or segment that was
31995b482a8SLen Brown * previously declared External
32095b482a8SLen Brown */
32195b482a8SLen Brown node->flags &= ~ANOBJ_IS_EXTERNAL;
32295b482a8SLen Brown node->type = (u8) object_type;
32395b482a8SLen Brown
32495b482a8SLen Brown /* Just retyped a node, probably will need to open a scope */
32595b482a8SLen Brown
32695b482a8SLen Brown if (acpi_ns_opens_scope(object_type)) {
32795b482a8SLen Brown status =
32895b482a8SLen Brown acpi_ds_scope_stack_push
32995b482a8SLen Brown (node, object_type,
33095b482a8SLen Brown walk_state);
33195b482a8SLen Brown if (ACPI_FAILURE(status)) {
33295b482a8SLen Brown return_ACPI_STATUS
33395b482a8SLen Brown (status);
33495b482a8SLen Brown }
33595b482a8SLen Brown }
33695b482a8SLen Brown
33795b482a8SLen Brown status = AE_OK;
33895b482a8SLen Brown }
33995b482a8SLen Brown }
34095b482a8SLen Brown
34195b482a8SLen Brown if (ACPI_FAILURE(status)) {
34216ccf829SBob Moore ACPI_ERROR_NAMESPACE(walk_state->scope_info,
34316ccf829SBob Moore path, status);
34495b482a8SLen Brown return_ACPI_STATUS(status);
34595b482a8SLen Brown }
34695b482a8SLen Brown }
34795b482a8SLen Brown break;
34895b482a8SLen Brown }
34995b482a8SLen Brown
35095b482a8SLen Brown /* Common exit */
35195b482a8SLen Brown
35295b482a8SLen Brown if (!op) {
35395b482a8SLen Brown
35495b482a8SLen Brown /* Create a new op */
35595b482a8SLen Brown
35662eb935bSLv Zheng op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
35795b482a8SLen Brown if (!op) {
35895b482a8SLen Brown return_ACPI_STATUS(AE_NO_MEMORY);
35995b482a8SLen Brown }
36095b482a8SLen Brown }
36195b482a8SLen Brown
36295b482a8SLen Brown /* Initialize the op */
36395b482a8SLen Brown
364178a0f63SErik Schmauss #ifdef ACPI_CONSTANT_EVAL_ONLY
36505c3507cSErik Schmauss op->named.path = path;
36695b482a8SLen Brown #endif
36795b482a8SLen Brown
36895b482a8SLen Brown if (node) {
36995b482a8SLen Brown /*
37095b482a8SLen Brown * Put the Node in the "op" object that the parser uses, so we
37195b482a8SLen Brown * can get it again quickly when this scope is closed
37295b482a8SLen Brown */
37395b482a8SLen Brown op->common.node = node;
37495b482a8SLen Brown op->named.name = node->name.integer;
37595b482a8SLen Brown }
37695b482a8SLen Brown
37795b482a8SLen Brown acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state),
37895b482a8SLen Brown op);
37995b482a8SLen Brown *out_op = op;
38095b482a8SLen Brown return_ACPI_STATUS(status);
38195b482a8SLen Brown }
38295b482a8SLen Brown
38395b482a8SLen Brown /*******************************************************************************
38495b482a8SLen Brown *
38595b482a8SLen Brown * FUNCTION: acpi_ds_load1_end_op
38695b482a8SLen Brown *
38795b482a8SLen Brown * PARAMETERS: walk_state - Current state of the parse tree walk
38895b482a8SLen Brown *
38995b482a8SLen Brown * RETURN: Status
39095b482a8SLen Brown *
39195b482a8SLen Brown * DESCRIPTION: Ascending callback used during the loading of the namespace,
39295b482a8SLen Brown * both control methods and everything else.
39395b482a8SLen Brown *
39495b482a8SLen Brown ******************************************************************************/
39595b482a8SLen Brown
acpi_ds_load1_end_op(struct acpi_walk_state * walk_state)39695b482a8SLen Brown acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state)
39795b482a8SLen Brown {
39895b482a8SLen Brown union acpi_parse_object *op;
39995b482a8SLen Brown acpi_object_type object_type;
40095b482a8SLen Brown acpi_status status = AE_OK;
401bdcf4cdbSErik Schmauss #ifdef ACPI_ASL_COMPILER
402bdcf4cdbSErik Schmauss u8 param_count;
403bdcf4cdbSErik Schmauss #endif
404bdcf4cdbSErik Schmauss
40595b482a8SLen Brown ACPI_FUNCTION_TRACE(ds_load1_end_op);
40695b482a8SLen Brown
40795b482a8SLen Brown op = walk_state->op;
40895b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
40995b482a8SLen Brown walk_state));
41095b482a8SLen Brown
4115ddbd771SErik Kaneda /*
4125ddbd771SErik Kaneda * Disassembler: handle create field operators here.
4135ddbd771SErik Kaneda *
4145ddbd771SErik Kaneda * create_buffer_field is a deferred op that is typically processed in load
4155ddbd771SErik Kaneda * pass 2. However, disassembly of control method contents walk the parse
4165ddbd771SErik Kaneda * tree with ACPI_PARSE_LOAD_PASS1 and AML_CREATE operators are processed
4175ddbd771SErik Kaneda * in a later walk. This is a problem when there is a control method that
4185ddbd771SErik Kaneda * has the same name as the AML_CREATE object. In this case, any use of the
4195ddbd771SErik Kaneda * name segment will be detected as a method call rather than a reference
4205ddbd771SErik Kaneda * to a buffer field.
4215ddbd771SErik Kaneda *
4225ddbd771SErik Kaneda * This earlier creation during disassembly solves this issue by inserting
4235ddbd771SErik Kaneda * the named object in the ACPI namespace so that references to this name
4245ddbd771SErik Kaneda * would be a name string rather than a method call.
4255ddbd771SErik Kaneda */
4265ddbd771SErik Kaneda if ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) &&
4275ddbd771SErik Kaneda (walk_state->op_info->flags & AML_CREATE)) {
4285ddbd771SErik Kaneda status = acpi_ds_create_buffer_field(op, walk_state);
4295ddbd771SErik Kaneda return_ACPI_STATUS(status);
4305ddbd771SErik Kaneda }
4315ddbd771SErik Kaneda
43295b482a8SLen Brown /* We are only interested in opcodes that have an associated name */
43395b482a8SLen Brown
43495b482a8SLen Brown if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) {
43595b482a8SLen Brown return_ACPI_STATUS(AE_OK);
43695b482a8SLen Brown }
43795b482a8SLen Brown
43895b482a8SLen Brown /* Get the object type to determine if we should pop the scope */
43995b482a8SLen Brown
44095b482a8SLen Brown object_type = walk_state->op_info->object_type;
44195b482a8SLen Brown
44295b482a8SLen Brown if (walk_state->op_info->flags & AML_FIELD) {
44395b482a8SLen Brown /*
44495b482a8SLen Brown * If we are executing a method, do not create any namespace objects
44595b482a8SLen Brown * during the load phase, only during execution.
44695b482a8SLen Brown */
44795b482a8SLen Brown if (!walk_state->method_node) {
44895b482a8SLen Brown if (walk_state->opcode == AML_FIELD_OP ||
44995b482a8SLen Brown walk_state->opcode == AML_BANK_FIELD_OP ||
45095b482a8SLen Brown walk_state->opcode == AML_INDEX_FIELD_OP) {
45195b482a8SLen Brown status =
45295b482a8SLen Brown acpi_ds_init_field_objects(op, walk_state);
45395b482a8SLen Brown }
45495b482a8SLen Brown }
45595b482a8SLen Brown return_ACPI_STATUS(status);
45695b482a8SLen Brown }
45795b482a8SLen Brown
45895b482a8SLen Brown /*
45995b482a8SLen Brown * If we are executing a method, do not create any namespace objects
46095b482a8SLen Brown * during the load phase, only during execution.
46195b482a8SLen Brown */
46295b482a8SLen Brown if (!walk_state->method_node) {
46395b482a8SLen Brown if (op->common.aml_opcode == AML_REGION_OP) {
46495b482a8SLen Brown status =
46595b482a8SLen Brown acpi_ex_create_region(op->named.data,
46695b482a8SLen Brown op->named.length,
4671fad8738SBob Moore (acpi_adr_space_type)
4681fad8738SBob Moore ((op->common.value.arg)->
4691fad8738SBob Moore common.value.integer),
47095b482a8SLen Brown walk_state);
47195b482a8SLen Brown if (ACPI_FAILURE(status)) {
47295b482a8SLen Brown return_ACPI_STATUS(status);
47395b482a8SLen Brown }
47495b482a8SLen Brown } else if (op->common.aml_opcode == AML_DATA_REGION_OP) {
47595b482a8SLen Brown status =
47695b482a8SLen Brown acpi_ex_create_region(op->named.data,
47795b482a8SLen Brown op->named.length,
47882a1b7cbSBob Moore ACPI_ADR_SPACE_DATA_TABLE,
47995b482a8SLen Brown walk_state);
48095b482a8SLen Brown if (ACPI_FAILURE(status)) {
48195b482a8SLen Brown return_ACPI_STATUS(status);
48295b482a8SLen Brown }
48395b482a8SLen Brown }
48495b482a8SLen Brown }
48595b482a8SLen Brown
48695b482a8SLen Brown if (op->common.aml_opcode == AML_NAME_OP) {
48795b482a8SLen Brown
48895b482a8SLen Brown /* For Name opcode, get the object type from the argument */
48995b482a8SLen Brown
49095b482a8SLen Brown if (op->common.value.arg) {
49195b482a8SLen Brown object_type = (acpi_ps_get_opcode_info((op->common.
49295b482a8SLen Brown value.arg)->
49395b482a8SLen Brown common.
49495b482a8SLen Brown aml_opcode))->
49595b482a8SLen Brown object_type;
49695b482a8SLen Brown
49795b482a8SLen Brown /* Set node type if we have a namespace node */
49895b482a8SLen Brown
49995b482a8SLen Brown if (op->common.node) {
50095b482a8SLen Brown op->common.node->type = (u8) object_type;
50195b482a8SLen Brown }
50295b482a8SLen Brown }
50395b482a8SLen Brown }
504bdcf4cdbSErik Schmauss #ifdef ACPI_ASL_COMPILER
505bdcf4cdbSErik Schmauss /*
506bdcf4cdbSErik Schmauss * For external opcode, get the object type from the argument and
507bdcf4cdbSErik Schmauss * get the parameter count from the argument's next.
508bdcf4cdbSErik Schmauss */
509bdcf4cdbSErik Schmauss if (acpi_gbl_disasm_flag &&
510bdcf4cdbSErik Schmauss op->common.node && op->common.aml_opcode == AML_EXTERNAL_OP) {
511bdcf4cdbSErik Schmauss /*
512bdcf4cdbSErik Schmauss * Note, if this external is not a method
513bdcf4cdbSErik Schmauss * Op->Common.Value.Arg->Common.Next->Common.Value.Integer == 0
514bdcf4cdbSErik Schmauss * Therefore, param_count will be 0.
515bdcf4cdbSErik Schmauss */
516bdcf4cdbSErik Schmauss param_count =
517bdcf4cdbSErik Schmauss (u8)op->common.value.arg->common.next->common.value.integer;
518bdcf4cdbSErik Schmauss object_type = (u8)op->common.value.arg->common.value.integer;
519bdcf4cdbSErik Schmauss op->common.node->flags |= ANOBJ_IS_EXTERNAL;
520bdcf4cdbSErik Schmauss op->common.node->type = (u8)object_type;
521bdcf4cdbSErik Schmauss
522bdcf4cdbSErik Schmauss acpi_dm_create_subobject_for_external((u8)object_type,
523bdcf4cdbSErik Schmauss &op->common.node,
524bdcf4cdbSErik Schmauss param_count);
525bdcf4cdbSErik Schmauss
526bdcf4cdbSErik Schmauss /*
527bdcf4cdbSErik Schmauss * Add the external to the external list because we may be
528bdcf4cdbSErik Schmauss * emitting code based off of the items within the external list.
529bdcf4cdbSErik Schmauss */
530bdcf4cdbSErik Schmauss acpi_dm_add_op_to_external_list(op, op->named.path,
531bdcf4cdbSErik Schmauss (u8)object_type, param_count,
532bdcf4cdbSErik Schmauss ACPI_EXT_ORIGIN_FROM_OPCODE |
533bdcf4cdbSErik Schmauss ACPI_EXT_RESOLVED_REFERENCE);
534bdcf4cdbSErik Schmauss }
535bdcf4cdbSErik Schmauss #endif
53695b482a8SLen Brown
53795b482a8SLen Brown /*
53895b482a8SLen Brown * If we are executing a method, do not create any namespace objects
53995b482a8SLen Brown * during the load phase, only during execution.
54095b482a8SLen Brown */
54195b482a8SLen Brown if (!walk_state->method_node) {
54295b482a8SLen Brown if (op->common.aml_opcode == AML_METHOD_OP) {
54395b482a8SLen Brown /*
54495b482a8SLen Brown * method_op pkg_length name_string method_flags term_list
54595b482a8SLen Brown *
54695b482a8SLen Brown * Note: We must create the method node/object pair as soon as we
54795b482a8SLen Brown * see the method declaration. This allows later pass1 parsing
54895b482a8SLen Brown * of invocations of the method (need to know the number of
54995b482a8SLen Brown * arguments.)
55095b482a8SLen Brown */
55195b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
55295b482a8SLen Brown "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
55395b482a8SLen Brown walk_state, op, op->named.node));
55495b482a8SLen Brown
55595b482a8SLen Brown if (!acpi_ns_get_attached_object(op->named.node)) {
55695b482a8SLen Brown walk_state->operands[0] =
55795b482a8SLen Brown ACPI_CAST_PTR(void, op->named.node);
55895b482a8SLen Brown walk_state->num_operands = 1;
55995b482a8SLen Brown
56095b482a8SLen Brown status =
56195b482a8SLen Brown acpi_ds_create_operands(walk_state,
56295b482a8SLen Brown op->common.value.
56395b482a8SLen Brown arg);
56495b482a8SLen Brown if (ACPI_SUCCESS(status)) {
56595b482a8SLen Brown status =
56695b482a8SLen Brown acpi_ex_create_method(op->named.
56795b482a8SLen Brown data,
56895b482a8SLen Brown op->named.
56995b482a8SLen Brown length,
57095b482a8SLen Brown walk_state);
57195b482a8SLen Brown }
57295b482a8SLen Brown
57395b482a8SLen Brown walk_state->operands[0] = NULL;
57495b482a8SLen Brown walk_state->num_operands = 0;
57595b482a8SLen Brown
57695b482a8SLen Brown if (ACPI_FAILURE(status)) {
57795b482a8SLen Brown return_ACPI_STATUS(status);
57895b482a8SLen Brown }
57995b482a8SLen Brown }
58095b482a8SLen Brown }
58195b482a8SLen Brown }
58295b482a8SLen Brown
58395b482a8SLen Brown /* Pop the scope stack (only if loading a table) */
58495b482a8SLen Brown
585bdcf4cdbSErik Schmauss if (!walk_state->method_node &&
586bdcf4cdbSErik Schmauss op->common.aml_opcode != AML_EXTERNAL_OP &&
587bdcf4cdbSErik Schmauss acpi_ns_opens_scope(object_type)) {
58895b482a8SLen Brown ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
58995b482a8SLen Brown "(%s): Popping scope for Op %p\n",
59095b482a8SLen Brown acpi_ut_get_type_name(object_type), op));
59195b482a8SLen Brown
59295b482a8SLen Brown status = acpi_ds_scope_stack_pop(walk_state);
59395b482a8SLen Brown }
59495b482a8SLen Brown
59595b482a8SLen Brown return_ACPI_STATUS(status);
59695b482a8SLen Brown }
597