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-rw-r--r--drivers/acpi/dispatcher/dsutils.c113
-rw-r--r--drivers/acpi/dispatcher/dswexec.c11
-rw-r--r--drivers/acpi/executer/exutils.c3
-rw-r--r--drivers/acpi/parser/psloop.c23
-rw-r--r--drivers/acpi/parser/psopcode.c26
-rw-r--r--drivers/acpi/parser/pstree.c2
-rw-r--r--include/acpi/acdispat.h2
-rw-r--r--include/acpi/aclocal.h3
-rw-r--r--include/acpi/acparser.h2
9 files changed, 177 insertions, 8 deletions
diff --git a/drivers/acpi/dispatcher/dsutils.c b/drivers/acpi/dispatcher/dsutils.c
index d2a8cfdaec22..36518b4a79c2 100644
--- a/drivers/acpi/dispatcher/dsutils.c
+++ b/drivers/acpi/dispatcher/dsutils.c
@@ -472,7 +472,8 @@ acpi_ds_create_operand(struct acpi_walk_state *walk_state,
/* A valid name must be looked up in the namespace */
if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) &&
- (arg->common.value.string)) {
+ (arg->common.value.string) &&
+ !(arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Getting a name: Arg=%p\n",
arg));
@@ -595,7 +596,8 @@ acpi_ds_create_operand(struct acpi_walk_state *walk_state,
} else {
/* Check for null name case */
- if (arg->common.aml_opcode == AML_INT_NAMEPATH_OP) {
+ if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) &&
+ !(arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
/*
* If the name is null, this means that this is an
* optional result parameter that was not specified
@@ -617,7 +619,8 @@ acpi_ds_create_operand(struct acpi_walk_state *walk_state,
return_ACPI_STATUS(AE_NOT_IMPLEMENTED);
}
- if (op_info->flags & AML_HAS_RETVAL) {
+ if ((op_info->flags & AML_HAS_RETVAL)
+ || (arg->common.flags & ACPI_PARSEOP_IN_STACK)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Argument previously created, already stacked\n"));
@@ -759,3 +762,107 @@ acpi_ds_create_operands(struct acpi_walk_state *walk_state,
ACPI_EXCEPTION((AE_INFO, status, "While creating Arg %d", index));
return_ACPI_STATUS(status);
}
+
+/*****************************************************************************
+ *
+ * FUNCTION: acpi_ds_evaluate_name_path
+ *
+ * PARAMETERS: walk_state - Current state of the parse tree walk,
+ * the opcode of current operation should be
+ * AML_INT_NAMEPATH_OP
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Translate the -name_path- parse tree object to the equivalent
+ * interpreter object, convert it to value, if needed, duplicate
+ * it, if needed, and push it onto the current result stack.
+ *
+ ****************************************************************************/
+
+acpi_status acpi_ds_evaluate_name_path(struct acpi_walk_state *walk_state)
+{
+ acpi_status status = AE_OK;
+ union acpi_parse_object *op = walk_state->op;
+ union acpi_operand_object **operand = &walk_state->operands[0];
+ union acpi_operand_object *new_obj_desc;
+ u8 type;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_evaluate_name_path, walk_state);
+
+ if (!op->common.parent) {
+
+ /* This happens after certain exception processing */
+
+ goto exit;
+ }
+
+ if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) ||
+ (op->common.parent->common.aml_opcode == AML_VAR_PACKAGE_OP) ||
+ (op->common.parent->common.aml_opcode == AML_REF_OF_OP)) {
+
+ /* TBD: Should we specify this feature as a bit of op_info->Flags of these opcodes? */
+
+ goto exit;
+ }
+
+ status = acpi_ds_create_operand(walk_state, op, 0);
+ if (ACPI_FAILURE(status)) {
+ goto exit;
+ }
+
+ if (op->common.flags & ACPI_PARSEOP_TARGET) {
+ new_obj_desc = *operand;
+ goto push_result;
+ }
+
+ type = ACPI_GET_OBJECT_TYPE(*operand);
+
+ status = acpi_ex_resolve_to_value(operand, walk_state);
+ if (ACPI_FAILURE(status)) {
+ goto exit;
+ }
+
+ if (type == ACPI_TYPE_INTEGER) {
+
+ /* It was incremented by acpi_ex_resolve_to_value */
+
+ acpi_ut_remove_reference(*operand);
+
+ status =
+ acpi_ut_copy_iobject_to_iobject(*operand, &new_obj_desc,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ goto exit;
+ }
+ } else {
+ /*
+ * The object either was anew created or is
+ * a Namespace node - don't decrement it.
+ */
+ new_obj_desc = *operand;
+ }
+
+ /* Cleanup for name-path operand */
+
+ status = acpi_ds_obj_stack_pop(1, walk_state);
+ if (ACPI_FAILURE(status)) {
+ walk_state->result_obj = new_obj_desc;
+ goto exit;
+ }
+
+ push_result:
+
+ walk_state->result_obj = new_obj_desc;
+
+ status = acpi_ds_result_push(walk_state->result_obj, walk_state);
+ if (ACPI_SUCCESS(status)) {
+
+ /* Force to take it from stack */
+
+ op->common.flags |= ACPI_PARSEOP_IN_STACK;
+ }
+
+ exit:
+
+ return_ACPI_STATUS(status);
+}
diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
index 12b148587e3d..514b9d2eb3a7 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -375,10 +375,17 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
/* Decode the Opcode Class */
switch (op_class) {
- case AML_CLASS_ARGUMENT: /* constants, literals, etc. - do nothing */
+ case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */
+
+ if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
+ status = acpi_ds_evaluate_name_path(walk_state);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+ }
break;
- case AML_CLASS_EXECUTE: /* most operators with arguments */
+ case AML_CLASS_EXECUTE: /* Most operators with arguments */
/* Build resolved operand stack */
diff --git a/drivers/acpi/executer/exutils.c b/drivers/acpi/executer/exutils.c
index c0837af0acb1..c40b191f70b5 100644
--- a/drivers/acpi/executer/exutils.c
+++ b/drivers/acpi/executer/exutils.c
@@ -217,9 +217,10 @@ void acpi_ex_truncate_for32bit_table(union acpi_operand_object *obj_desc)
/*
* Object must be a valid number and we must be executing
- * a control method
+ * a control method. NS node could be there for AML_INT_NAMEPATH_OP.
*/
if ((!obj_desc) ||
+ (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) ||
(ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_INTEGER)) {
return;
}
diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c
index 266dd0c10218..4348b0530398 100644
--- a/drivers/acpi/parser/psloop.c
+++ b/drivers/acpi/parser/psloop.c
@@ -182,6 +182,7 @@ acpi_ps_build_named_op(struct acpi_walk_state *walk_state,
ACPI_FUNCTION_TRACE_PTR(ps_build_named_op, walk_state);
unnamed_op->common.value.arg = NULL;
+ unnamed_op->common.arg_list_length = 0;
unnamed_op->common.aml_opcode = walk_state->opcode;
/*
@@ -280,6 +281,9 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
acpi_status status = AE_OK;
union acpi_parse_object *op;
union acpi_parse_object *named_op = NULL;
+ union acpi_parse_object *parent_scope;
+ u8 argument_count;
+ const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state);
@@ -320,8 +324,23 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
op->named.length = 0;
}
- acpi_ps_append_arg(acpi_ps_get_parent_scope
- (&(walk_state->parser_state)), op);
+ parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
+ acpi_ps_append_arg(parent_scope, op);
+
+ if (parent_scope) {
+ op_info =
+ acpi_ps_get_opcode_info(parent_scope->common.aml_opcode);
+ if (op_info->flags & AML_HAS_TARGET) {
+ argument_count =
+ acpi_ps_get_argument_count(op_info->type);
+ if (parent_scope->common.arg_list_length >
+ argument_count) {
+ op->common.flags |= ACPI_PARSEOP_TARGET;
+ }
+ } else if (parent_scope->common.aml_opcode == AML_INCREMENT_OP) {
+ op->common.flags |= ACPI_PARSEOP_TARGET;
+ }
+ }
if (walk_state->descending_callback != NULL) {
/*
diff --git a/drivers/acpi/parser/psopcode.c b/drivers/acpi/parser/psopcode.c
index 9296e86761d7..3bf8105d6348 100644
--- a/drivers/acpi/parser/psopcode.c
+++ b/drivers/acpi/parser/psopcode.c
@@ -49,6 +49,8 @@
#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psopcode")
+const u8 acpi_gbl_argument_count[] = { 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 6 };
+
/*******************************************************************************
*
* NAME: acpi_gbl_aml_op_info
@@ -59,6 +61,7 @@ ACPI_MODULE_NAME("psopcode")
* the operand type.
*
******************************************************************************/
+
/*
* Summary of opcode types/flags
*
@@ -176,6 +179,7 @@ ACPI_MODULE_NAME("psopcode")
AML_CREATE_QWORD_FIELD_OP
******************************************************************************/
+
/*
* Master Opcode information table. A summary of everything we know about each
* opcode, all in one place.
@@ -779,3 +783,25 @@ char *acpi_ps_get_opcode_name(u16 opcode)
#endif
}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_get_argument_count
+ *
+ * PARAMETERS: op_type - Type associated with the AML opcode
+ *
+ * RETURN: Argument count
+ *
+ * DESCRIPTION: Obtain the number of expected arguments for an AML opcode
+ *
+ ******************************************************************************/
+
+u8 acpi_ps_get_argument_count(u32 op_type)
+{
+
+ if (op_type <= AML_TYPE_EXEC_6A_0T_1R) {
+ return (acpi_gbl_argument_count[op_type]);
+ }
+
+ return (0);
+}
diff --git a/drivers/acpi/parser/pstree.c b/drivers/acpi/parser/pstree.c
index 966e7ea2a0c4..0e1a3226665d 100644
--- a/drivers/acpi/parser/pstree.c
+++ b/drivers/acpi/parser/pstree.c
@@ -171,6 +171,8 @@ acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg)
while (arg) {
arg->common.parent = op;
arg = arg->common.next;
+
+ op->common.arg_list_length++;
}
}
diff --git a/include/acpi/acdispat.h b/include/acpi/acdispat.h
index 70d649e92c41..3bffb4db4bce 100644
--- a/include/acpi/acdispat.h
+++ b/include/acpi/acdispat.h
@@ -269,6 +269,8 @@ acpi_status acpi_ds_resolve_operands(struct acpi_walk_state *walk_state);
void acpi_ds_clear_operands(struct acpi_walk_state *walk_state);
+acpi_status acpi_ds_evaluate_name_path(struct acpi_walk_state *walk_state);
+
/*
* dswscope - Scope Stack manipulation
*/
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index 0b7c9a9e3c84..946da60e36e7 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -603,6 +603,7 @@ union acpi_parse_value {
union acpi_parse_object *next; /* Next op */\
struct acpi_namespace_node *node; /* For use by interpreter */\
union acpi_parse_value value; /* Value or args associated with the opcode */\
+ u8 arg_list_length; /* Number of elements in the arg list */\
ACPI_DISASM_ONLY_MEMBERS (\
u8 disasm_flags; /* Used during AML disassembly */\
u8 disasm_opcode; /* Subtype used for disassembly */\
@@ -695,6 +696,8 @@ struct acpi_parse_state {
#define ACPI_PARSEOP_NAMED 0x02
#define ACPI_PARSEOP_DEFERRED 0x04
#define ACPI_PARSEOP_BYTELIST 0x08
+#define ACPI_PARSEOP_IN_STACK 0x10
+#define ACPI_PARSEOP_TARGET 0x20
#define ACPI_PARSEOP_IN_CACHE 0x80
/* Parse object disasm_flags */
diff --git a/include/acpi/acparser.h b/include/acpi/acparser.h
index 85c358e21014..a3ae76b270af 100644
--- a/include/acpi/acparser.h
+++ b/include/acpi/acparser.h
@@ -109,6 +109,8 @@ const struct acpi_opcode_info *acpi_ps_get_opcode_info(u16 opcode);
char *acpi_ps_get_opcode_name(u16 opcode);
+u8 acpi_ps_get_argument_count(u32 op_type);
+
/*
* psparse - top level parsing routines
*/
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