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path: root/drivers/acpi/acpica/exoparg1.c
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Diffstat (limited to 'drivers/acpi/acpica/exoparg1.c')
-rw-r--r--drivers/acpi/acpica/exoparg1.c93
1 files changed, 61 insertions, 32 deletions
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index 236ead14b7f..1b8e9410440 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -1,4 +1,3 @@
-
/******************************************************************************
*
* Module Name: exoparg1 - AML execution - opcodes with 1 argument
@@ -6,7 +5,7 @@
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2014, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -116,7 +115,7 @@ acpi_status acpi_ex_opcode_0A_0T_1R(struct acpi_walk_state *walk_state)
break;
}
- cleanup:
+cleanup:
/* Delete return object on error */
@@ -235,7 +234,7 @@ acpi_status acpi_ex_opcode_1A_1T_0R(struct acpi_walk_state *walk_state)
goto cleanup;
}
- cleanup:
+cleanup:
return_ACPI_STATUS(status);
}
@@ -328,7 +327,6 @@ acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
break;
case AML_FROM_BCD_OP: /* from_bcd (BCDValue, Result) */
-
/*
* The 64-bit ACPI integer can hold 16 4-bit BCD characters
* (if table is 32-bit, integer can hold 8 BCD characters)
@@ -408,7 +406,6 @@ acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
break;
case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */
-
/*
* This op is a little strange because the internal return value is
* different than the return value stored in the result descriptor
@@ -443,13 +440,14 @@ acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
goto cleanup;
default:
+
/* No other opcodes get here */
+
break;
}
break;
case AML_STORE_OP: /* Store (Source, Target) */
-
/*
* A store operand is typically a number, string, buffer or lvalue
* Be careful about deleting the source object,
@@ -553,7 +551,7 @@ acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
status = acpi_ex_store(return_desc, operand[1], walk_state);
}
- cleanup:
+cleanup:
/* Delete return object on error */
@@ -606,7 +604,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
}
/*
- * Set result to ONES (TRUE) if Value == 0. Note:
+ * Set result to ONES (TRUE) if Value == 0. Note:
* return_desc->Integer.Value is initially == 0 (FALSE) from above.
*/
if (!operand[0]->integer.value) {
@@ -616,9 +614,8 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
case AML_DECREMENT_OP: /* Decrement (Operand) */
case AML_INCREMENT_OP: /* Increment (Operand) */
-
/*
- * Create a new integer. Can't just get the base integer and
+ * Create a new integer. Can't just get the base integer and
* increment it because it may be an Arg or Field.
*/
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
@@ -683,10 +680,9 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
break;
case AML_TYPE_OP: /* object_type (source_object) */
-
/*
* Note: The operand is not resolved at this point because we want to
- * get the associated object, not its value. For example, we don't
+ * get the associated object, not its value. For example, we don't
* want to resolve a field_unit to its value, we want the actual
* field_unit object.
*/
@@ -710,7 +706,6 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
break;
case AML_SIZE_OF_OP: /* size_of (source_object) */
-
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value.
@@ -727,7 +722,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
/*
* The type of the base object must be integer, buffer, string, or
- * package. All others are not supported.
+ * package. All others are not supported.
*
* NOTE: Integer is not specifically supported by the ACPI spec,
* but is supported implicitly via implicit operand conversion.
@@ -736,10 +731,12 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
*/
switch (type) {
case ACPI_TYPE_INTEGER:
+
value = acpi_gbl_integer_byte_width;
break;
case ACPI_TYPE_STRING:
+
value = temp_desc->string.length;
break;
@@ -760,6 +757,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
break;
default:
+
ACPI_ERROR((AE_INFO,
"Operand must be Buffer/Integer/String/Package - found type %s",
acpi_ut_get_type_name(type)));
@@ -861,9 +859,11 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
break;
case ACPI_TYPE_STRING:
+
break;
default:
+
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
@@ -924,7 +924,6 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
*/
switch (operand[0]->reference.class) {
case ACPI_REFCLASS_INDEX:
-
/*
* The target type for the Index operator must be
* either a Buffer or a Package
@@ -949,13 +948,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
*/
return_desc =
acpi_ut_create_integer_object((u64)
- temp_desc->
- buffer.
- pointer
- [operand
- [0]->
- reference.
- value]);
+ temp_desc->buffer.pointer[operand[0]->reference.value]);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
@@ -963,17 +956,23 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
break;
case ACPI_TYPE_PACKAGE:
-
/*
- * Return the referenced element of the package. We must
+ * Return the referenced element of the package. We must
* add another reference to the referenced object, however.
*/
return_desc =
*(operand[0]->reference.where);
- if (return_desc) {
- acpi_ut_add_reference
- (return_desc);
+ if (!return_desc) {
+ /*
+ * Element is NULL, do not allow the dereference.
+ * This provides compatibility with other ACPI
+ * implementations.
+ */
+ return_ACPI_STATUS
+ (AE_AML_UNINITIALIZED_ELEMENT);
}
+
+ acpi_ut_add_reference(return_desc);
break;
default:
@@ -998,14 +997,44 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
acpi_namespace_node
*)
return_desc);
- }
+ if (!return_desc) {
+ break;
+ }
+
+ /*
+ * June 2013:
+ * buffer_fields/field_units require additional resolution
+ */
+ switch (return_desc->common.type) {
+ case ACPI_TYPE_BUFFER_FIELD:
+ case ACPI_TYPE_LOCAL_REGION_FIELD:
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+ case ACPI_TYPE_LOCAL_INDEX_FIELD:
- /* Add another reference to the object! */
+ status =
+ acpi_ex_read_data_from_field
+ (walk_state, return_desc,
+ &temp_desc);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
- acpi_ut_add_reference(return_desc);
+ return_desc = temp_desc;
+ break;
+
+ default:
+
+ /* Add another reference to the object */
+
+ acpi_ut_add_reference
+ (return_desc);
+ break;
+ }
+ }
break;
default:
+
ACPI_ERROR((AE_INFO,
"Unknown class in reference(%p) - 0x%2.2X",
operand[0],
@@ -1025,7 +1054,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
goto cleanup;
}
- cleanup:
+cleanup:
/* Delete return object on error */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 20:10:39 +0000