From eb87a05223293a915dc97e6966cbbb1baa43cd5f Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:05 +0800
Subject: [PATCH 01/22] ACPICA: Parser: Reduce parser/namespace divergences for
 tracer support

This patch reduces divergences in parser/namespace components so that the
follow-up linuxized ACPICA upstream commits can be directly merged.
Including the fix to an indent issue reported and fixed by Zhouyi Zhou.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Zhouyi Zhou <yizhouzhou@ict.ac.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/nsnames.c | 2 +-
 drivers/acpi/acpica/nsparse.c | 6 +++---
 drivers/acpi/acpica/psloop.c  | 8 ++++----
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index d293d97480363..2e37888f6abef 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -108,7 +108,7 @@ acpi_ns_build_external_path(struct acpi_namespace_node *node,
 	if (index != 0) {
 		ACPI_ERROR((AE_INFO,
 			    "Could not construct external pathname; index=%u, size=%u, Path=%s",
-			    (u32) index, (u32) size, &name_buffer[size]));
+			    (u32)index, (u32)size, &name_buffer[size]));
 
 		return (AE_BAD_PARAMETER);
 	}
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c
index 57a4cfe547e49..9926a67ca6d71 100644
--- a/drivers/acpi/acpica/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -70,7 +70,7 @@ acpi_ns_one_complete_parse(u32 pass_number,
 {
 	union acpi_parse_object *parse_root;
 	acpi_status status;
-       u32 aml_length;
+	u32 aml_length;
 	u8 *aml_start;
 	struct acpi_walk_state *walk_state;
 	struct acpi_table_header *table;
@@ -110,11 +110,11 @@ acpi_ns_one_complete_parse(u32 pass_number,
 	if (table->length < sizeof(struct acpi_table_header)) {
 		status = AE_BAD_HEADER;
 	} else {
-		aml_start = (u8 *) table + sizeof(struct acpi_table_header);
+		aml_start = (u8 *)table + sizeof(struct acpi_table_header);
 		aml_length = table->length - sizeof(struct acpi_table_header);
 		status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
 					       aml_start, aml_length, NULL,
-					       (u8) pass_number);
+					       (u8)pass_number);
 	}
 
 	/* Found OSDT table, enable the namespace override feature */
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 90437227d7909..6136458d65d23 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -126,9 +126,9 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
 		while (GET_CURRENT_ARG_TYPE(walk_state->arg_types)
 		       && !walk_state->arg_count) {
 			walk_state->aml_offset =
-			    (u32) ACPI_PTR_DIFF(walk_state->parser_state.aml,
-						walk_state->parser_state.
-						aml_start);
+			    (u32)ACPI_PTR_DIFF(walk_state->parser_state.aml,
+					       walk_state->parser_state.
+					       aml_start);
 
 			status =
 			    acpi_ps_get_next_arg(walk_state,
@@ -499,7 +499,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 			if (walk_state->op_info) {
 				ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 						  "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n",
-						  (u32) op->common.aml_opcode,
+						  (u32)op->common.aml_opcode,
 						  walk_state->op_info->name, op,
 						  parser_state->aml,
 						  op->common.aml_offset));

From 83482f758b0d2d6a20a10be88399da44aa186aed Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:11 +0800
Subject: [PATCH 02/22] ACPICA: Parser: Cleanup aml_offset in struct
 acpi_walk_state

ACPICA commit d254405814495058276c0c2f9d96794d15a6c91c

This patch converts aml_offset in struct acpi_walk_state to AML address.

AML offset is actually only used by the debugger, using AML address is more
direct and efficient during the parsing stage so that we don't need to
calculate it during the parsing stage.

On the other hand, we can see several issues in the current parser logic
around the aml_offset:
1. union acpi_operand_object.Common.aml_offset is redundantly assigned in
   acpi_ps_parse_loop().
2. aml_offset is not an indication of the offset from the table header but
   the offset from the entry of a list of objects. Sometimes, it indicates
   an entry for a Method/Package/Buffer, which makes it difficult to be
   reversely calculated to a table header offset.
3. When being used with method tracers (for example, Linux function trace),
   it's better to have AML address logged instead of the AML offset because
   the address is the only attribute that can uniquely identify the opcode.
This patch is required to solve the above issues. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/d2544058
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acstruct.h |  2 +-
 drivers/acpi/acpica/dsmethod.c |  9 +++++++--
 drivers/acpi/acpica/psloop.c   | 15 +++++++++------
 drivers/acpi/acpica/psobject.c | 15 +++++++++------
 4 files changed, 26 insertions(+), 15 deletions(-)

diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h
index 44997ca02ae26..f9992dced1f98 100644
--- a/drivers/acpi/acpica/acstruct.h
+++ b/drivers/acpi/acpica/acstruct.h
@@ -85,7 +85,7 @@ struct acpi_walk_state {
 	u8 namespace_override;	/* Override existing objects */
 	u8 result_size;		/* Total elements for the result stack */
 	u8 result_count;	/* Current number of occupied elements of result stack */
-	u32 aml_offset;
+	u8 *aml;
 	u32 arg_types;
 	u32 method_breakpoint;	/* For single stepping */
 	u32 user_breakpoint;	/* User AML breakpoint */
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 85bb951430d96..bf8c16e379fbd 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -214,6 +214,8 @@ acpi_ds_detect_named_opcodes(struct acpi_walk_state *walk_state,
 acpi_status
 acpi_ds_method_error(acpi_status status, struct acpi_walk_state * walk_state)
 {
+	u32 aml_offset;
+
 	ACPI_FUNCTION_ENTRY();
 
 	/* Ignore AE_OK and control exception codes */
@@ -234,13 +236,16 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state * walk_state)
 		 * Handler can map the exception code to anything it wants, including
 		 * AE_OK, in which case the executing method will not be aborted.
 		 */
+		aml_offset = (u32)ACPI_PTR_DIFF(walk_state->aml,
+						walk_state->parser_state.
+						aml_start);
+
 		status = acpi_gbl_exception_handler(status,
 						    walk_state->method_node ?
 						    walk_state->method_node->
 						    name.integer : 0,
 						    walk_state->opcode,
-						    walk_state->aml_offset,
-						    NULL);
+						    aml_offset, NULL);
 		acpi_ex_enter_interpreter();
 	}
 
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 6136458d65d23..ce66e73f1f60b 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -125,10 +125,7 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
 		 */
 		while (GET_CURRENT_ARG_TYPE(walk_state->arg_types)
 		       && !walk_state->arg_count) {
-			walk_state->aml_offset =
-			    (u32)ACPI_PTR_DIFF(walk_state->parser_state.aml,
-					       walk_state->parser_state.
-					       aml_start);
+			walk_state->aml = walk_state->parser_state.aml;
 
 			status =
 			    acpi_ps_get_next_arg(walk_state,
@@ -140,7 +137,10 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
 			}
 
 			if (arg) {
-				arg->common.aml_offset = walk_state->aml_offset;
+				arg->common.aml_offset =
+				    (u32)ACPI_PTR_DIFF(walk_state->aml,
+						       walk_state->parser_state.
+						       aml_start);
 				acpi_ps_append_arg(op, arg);
 			}
 
@@ -494,7 +494,10 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 				continue;
 			}
 
-			op->common.aml_offset = walk_state->aml_offset;
+			op->common.aml_offset =
+			    (u32)ACPI_PTR_DIFF(walk_state->aml,
+					       walk_state->parser_state.
+					       aml_start);
 
 			if (walk_state->op_info) {
 				ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c
index 2f5ddd806c58b..6ba3bb7402a95 100644
--- a/drivers/acpi/acpica/psobject.c
+++ b/drivers/acpi/acpica/psobject.c
@@ -66,12 +66,11 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state);
 
 static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
 {
+	u32 aml_offset;
 
 	ACPI_FUNCTION_TRACE_PTR(ps_get_aml_opcode, walk_state);
 
-	walk_state->aml_offset =
-	    (u32)ACPI_PTR_DIFF(walk_state->parser_state.aml,
-			       walk_state->parser_state.aml_start);
+	walk_state->aml = walk_state->parser_state.aml;
 	walk_state->opcode = acpi_ps_peek_opcode(&(walk_state->parser_state));
 
 	/*
@@ -98,10 +97,14 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
 		/* The opcode is unrecognized. Complain and skip unknown opcodes */
 
 		if (walk_state->pass_number == 2) {
+			aml_offset = (u32)ACPI_PTR_DIFF(walk_state->aml,
+							walk_state->
+							parser_state.aml_start);
+
 			ACPI_ERROR((AE_INFO,
 				    "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring",
 				    walk_state->opcode,
-				    (u32)(walk_state->aml_offset +
+				    (u32)(aml_offset +
 					  sizeof(struct acpi_table_header))));
 
 			ACPI_DUMP_BUFFER((walk_state->parser_state.aml - 16),
@@ -115,14 +118,14 @@ static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
 			acpi_os_printf
 			    ("/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n",
 			     walk_state->opcode,
-			     (u32)(walk_state->aml_offset +
+			     (u32)(aml_offset +
 				   sizeof(struct acpi_table_header)));
 
 			/* Dump the context surrounding the invalid opcode */
 
 			acpi_ut_dump_buffer(((u8 *)walk_state->parser_state.
 					     aml - 16), 48, DB_BYTE_DISPLAY,
-					    (walk_state->aml_offset +
+					    (aml_offset +
 					     sizeof(struct acpi_table_header) -
 					     16));
 			acpi_os_printf(" */\n");

From 950a429cd21638b0c076d135ed279518b21f452b Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:18 +0800
Subject: [PATCH 03/22] ACPICA: Parser: Cleanup aml_offset in union
 acpi_operand_object

ACPICA commit 61b360074fde2bb8282722579410f5d1fb12f84d

This patch converts aml_offset in union acpi_operand_object to AML address.

AML offset is actually only used by the debugger, using AML address is more
direct and efficient during the parsing stage so that we don't need to
calculate the offset during the parsing stage and will not have
difficulities in converting it into other offset attributes.

Sometimes, aml_offset is not an indication of the offset from the table
header but the offset from the entry of a list of terms, which requires
additional efforts to convert it into an offset from the table header. By
using AML address directly, there is no such difficulty.
Thus this patch also deletes a logic in disassembler that is trying to
convert the aml_offset from
  "offset from the start address of Method/Package/Buffer"
into the
  "offset from the start address of the ACPI table"
(Sample code deletion can be seen in acpi_dm_deferred_parse(), but the
function is not in the Linux kernel). Lv Zheng.

Link: https://github.com/acpica/acpica/commit/61b36007
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/aclocal.h |  2 +-
 drivers/acpi/acpica/psargs.c  |  7 +++----
 drivers/acpi/acpica/psloop.c  | 15 ++++-----------
 3 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index bc600969c6a15..607e62897aff3 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -726,7 +726,7 @@ union acpi_parse_value {
 	u8                              descriptor_type; /* To differentiate various internal objs */\
 	u8                              flags;          /* Type of Op */\
 	u16                             aml_opcode;     /* AML opcode */\
-	u32                             aml_offset;     /* Offset of declaration in AML */\
+	u8                              *aml;           /* Address of declaration in AML */\
 	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 */\
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index 6d038770577b3..0bee9466d1498 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -484,7 +484,7 @@ acpi_ps_get_next_simple_arg(struct acpi_parse_state *parser_state,
 static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 						       *parser_state)
 {
-	u32 aml_offset;
+	u8 *aml;
 	union acpi_parse_object *field;
 	union acpi_parse_object *arg = NULL;
 	u16 opcode;
@@ -498,8 +498,7 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 
 	ACPI_FUNCTION_TRACE(ps_get_next_field);
 
-	aml_offset =
-	    (u32)ACPI_PTR_DIFF(parser_state->aml, parser_state->aml_start);
+	aml = parser_state->aml;
 
 	/* Determine field type */
 
@@ -541,7 +540,7 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 		return_PTR(NULL);
 	}
 
-	field->common.aml_offset = aml_offset;
+	field->common.aml = aml;
 
 	/* Decode the field type */
 
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index ce66e73f1f60b..d5843830fef80 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -137,10 +137,7 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
 			}
 
 			if (arg) {
-				arg->common.aml_offset =
-				    (u32)ACPI_PTR_DIFF(walk_state->aml,
-						       walk_state->parser_state.
-						       aml_start);
+				arg->common.aml = walk_state->aml;
 				acpi_ps_append_arg(op, arg);
 			}
 
@@ -494,18 +491,14 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 				continue;
 			}
 
-			op->common.aml_offset =
-			    (u32)ACPI_PTR_DIFF(walk_state->aml,
-					       walk_state->parser_state.
-					       aml_start);
+			op->common.aml = walk_state->aml;
 
 			if (walk_state->op_info) {
 				ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
-						  "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n",
+						  "Opcode %4.4X [%s] Op %p Aml %p\n",
 						  (u32)op->common.aml_opcode,
 						  walk_state->op_info->name, op,
-						  parser_state->aml,
-						  op->common.aml_offset));
+						  op->common.aml));
 			}
 		}
 

From 62eb935b77818a5e4ff3c8d9b97036b59944f649 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:24 +0800
Subject: [PATCH 04/22] ACPICA: Dispatcher: Cleanup union acpi_operand_object's
 AML address assignments

ACPICA commit afb52611dbe7403551f93504d3798534f5c343f4

This patch cleans up the code of assigning the AML address to the
union acpi_operand_object.

The idea behind this cleanup is:
The AML address of the union acpi_operand_object should always be determined at
the point where the object is encountered. It should be started from the
first byte of the object. For example, the opcode of the object, the name
string of the user_term object, or the first byte of the packaged object
(where a pkg_length is prefixed). So it's not cleaner to have it assigned
here and there in the entire ACPICA source tree.

There are some special cases for the internal opcodes, before cleaning up
the internal opcodes, we should also determine the rules for the AML
addresses of the internal opcodes:
1. INT_NAMEPATH_OP: the address of the first byte for the name_string.
2. INT_METHODCALL_OP: the address of the first byte for the name_string.
3. INT_BYTELIST_OP: the address of the first byte for the byte_data list.
4. INT_EVAL_SUBTREE_OP: the address of the first byte for the
                        Region/Package/Buffer/bank_field/Field arguments.
5. INT_NAMEDFIELD_OP: the address to the name_seg.
6. INT_RESERVEDFIELD_OP: the address to the 0x00 prefix.
7. INT_ACCESSFIELD_OP: the address to the 0x01 prefix.
8. INT_CONNECTION_OP: the address to the 0x02 prefix.
9: INT_EXTACCESSFIELD_OP: the address to the 0x03 prefix.
10.INT_RETURN_VALUE_OP: the address of the replaced operand.
11.computational_data: the address to the
                      Byte/Word/Dword/Qword/string_prefix.

Before cleaning up the internal root scope of the aml_walk, turning it into
the term_list, we need to remember the aml_start address as the "Aml"
attribute for the union acpi_operand_object created by acpi_ps_create_scope_op().

Finally, we can delete some redundant AML address assignment in psloop.c.

Link: https://github.com/acpica/acpica/commit/afb52611
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acparser.h |  4 ++--
 drivers/acpi/acpica/dsargs.c   |  4 ++--
 drivers/acpi/acpica/dsmethod.c |  2 +-
 drivers/acpi/acpica/dswload.c  |  2 +-
 drivers/acpi/acpica/dswload2.c |  2 +-
 drivers/acpi/acpica/nsparse.c  | 40 ++++++++++++++++------------------
 drivers/acpi/acpica/psargs.c   | 21 ++++++++++--------
 drivers/acpi/acpica/psloop.c   |  3 ---
 drivers/acpi/acpica/psobject.c |  2 +-
 drivers/acpi/acpica/psparse.c  | 12 ++++++----
 drivers/acpi/acpica/psutils.c  |  8 ++++---
 drivers/acpi/acpica/psxface.c  |  2 +-
 12 files changed, 53 insertions(+), 49 deletions(-)

diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h
index 0cdd2fce493a9..6021ccfb0b1c8 100644
--- a/drivers/acpi/acpica/acparser.h
+++ b/drivers/acpi/acpica/acparser.h
@@ -225,11 +225,11 @@ void acpi_ps_delete_parse_tree(union acpi_parse_object *root);
 /*
  * psutils - parser utilities
  */
-union acpi_parse_object *acpi_ps_create_scope_op(void);
+union acpi_parse_object *acpi_ps_create_scope_op(u8 *aml);
 
 void acpi_ps_init_op(union acpi_parse_object *op, u16 opcode);
 
-union acpi_parse_object *acpi_ps_alloc_op(u16 opcode);
+union acpi_parse_object *acpi_ps_alloc_op(u16 opcode, u8 *aml);
 
 void acpi_ps_free_op(union acpi_parse_object *op);
 
diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c
index 3e6989738e85f..e2ab59e391627 100644
--- a/drivers/acpi/acpica/dsargs.c
+++ b/drivers/acpi/acpica/dsargs.c
@@ -86,7 +86,7 @@ acpi_ds_execute_arguments(struct acpi_namespace_node *node,
 
 	/* Allocate a new parser op to be the root of the parsed tree */
 
-	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP);
+	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
 	if (!op) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
@@ -129,7 +129,7 @@ acpi_ds_execute_arguments(struct acpi_namespace_node *node,
 
 	/* Evaluate the deferred arguments */
 
-	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP);
+	op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start);
 	if (!op) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index bf8c16e379fbd..4abc2425de4ba 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -103,7 +103,7 @@ acpi_ds_auto_serialize_method(struct acpi_namespace_node *node,
 
 	/* Create/Init a root op for the method parse tree */
 
-	op = acpi_ps_alloc_op(AML_METHOD_OP);
+	op = acpi_ps_alloc_op(AML_METHOD_OP, obj_desc->method.aml_start);
 	if (!op) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c
index 845ff44919c37..097188a6b1c1b 100644
--- a/drivers/acpi/acpica/dswload.c
+++ b/drivers/acpi/acpica/dswload.c
@@ -388,7 +388,7 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
 
 		/* Create a new op */
 
-		op = acpi_ps_alloc_op(walk_state->opcode);
+		op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
 		if (!op) {
 			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c
index fcaa30c611fb1..e2c08cd79aca7 100644
--- a/drivers/acpi/acpica/dswload2.c
+++ b/drivers/acpi/acpica/dswload2.c
@@ -335,7 +335,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
 
 		/* Create a new op */
 
-		op = acpi_ps_alloc_op(walk_state->opcode);
+		op = acpi_ps_alloc_op(walk_state->opcode, walk_state->aml);
 		if (!op) {
 			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c
index 9926a67ca6d71..3736d43b18b94 100644
--- a/drivers/acpi/acpica/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -78,6 +78,20 @@ acpi_ns_one_complete_parse(u32 pass_number,
 
 	ACPI_FUNCTION_TRACE(ns_one_complete_parse);
 
+	status = acpi_get_table_by_index(table_index, &table);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
+	/* Table must consist of at least a complete header */
+
+	if (table->length < sizeof(struct acpi_table_header)) {
+		return_ACPI_STATUS(AE_BAD_HEADER);
+	}
+
+	aml_start = (u8 *)table + sizeof(struct acpi_table_header);
+	aml_length = table->length - sizeof(struct acpi_table_header);
+
 	status = acpi_tb_get_owner_id(table_index, &owner_id);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
@@ -85,7 +99,7 @@ acpi_ns_one_complete_parse(u32 pass_number,
 
 	/* Create and init a Root Node */
 
-	parse_root = acpi_ps_create_scope_op();
+	parse_root = acpi_ps_create_scope_op(aml_start);
 	if (!parse_root) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
@@ -98,23 +112,12 @@ acpi_ns_one_complete_parse(u32 pass_number,
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
-	status = acpi_get_table_by_index(table_index, &table);
+	status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
+				       aml_start, aml_length, NULL,
+				       (u8)pass_number);
 	if (ACPI_FAILURE(status)) {
 		acpi_ds_delete_walk_state(walk_state);
-		acpi_ps_free_op(parse_root);
-		return_ACPI_STATUS(status);
-	}
-
-	/* Table must consist of at least a complete header */
-
-	if (table->length < sizeof(struct acpi_table_header)) {
-		status = AE_BAD_HEADER;
-	} else {
-		aml_start = (u8 *)table + sizeof(struct acpi_table_header);
-		aml_length = table->length - sizeof(struct acpi_table_header);
-		status = acpi_ds_init_aml_walk(walk_state, parse_root, NULL,
-					       aml_start, aml_length, NULL,
-					       (u8)pass_number);
+		goto cleanup;
 	}
 
 	/* Found OSDT table, enable the namespace override feature */
@@ -124,11 +127,6 @@ acpi_ns_one_complete_parse(u32 pass_number,
 		walk_state->namespace_override = TRUE;
 	}
 
-	if (ACPI_FAILURE(status)) {
-		acpi_ds_delete_walk_state(walk_state);
-		goto cleanup;
-	}
-
 	/* start_node is the default location to load the table */
 
 	if (start_node && start_node != acpi_gbl_root_node) {
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index 0bee9466d1498..29d8b7b01dca7 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -287,7 +287,7 @@ acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
 				  "Control Method - %p Desc %p Path=%p\n", node,
 				  method_desc, path));
 
-		name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
+		name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP, start);
 		if (!name_op) {
 			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
@@ -535,13 +535,11 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 
 	/* Allocate a new field op */
 
-	field = acpi_ps_alloc_op(opcode);
+	field = acpi_ps_alloc_op(opcode, aml);
 	if (!field) {
 		return_PTR(NULL);
 	}
 
-	field->common.aml = aml;
-
 	/* Decode the field type */
 
 	switch (opcode) {
@@ -603,6 +601,7 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 		 * Argument for Connection operator can be either a Buffer
 		 * (resource descriptor), or a name_string.
 		 */
+		aml = parser_state->aml;
 		if (ACPI_GET8(parser_state->aml) == AML_BUFFER_OP) {
 			parser_state->aml++;
 
@@ -615,7 +614,8 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 
 				/* Non-empty list */
 
-				arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP);
+				arg =
+				    acpi_ps_alloc_op(AML_INT_BYTELIST_OP, aml);
 				if (!arg) {
 					acpi_ps_free_op(field);
 					return_PTR(NULL);
@@ -664,7 +664,7 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
 
 			parser_state->aml = pkg_end;
 		} else {
-			arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
+			arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP, aml);
 			if (!arg) {
 				acpi_ps_free_op(field);
 				return_PTR(NULL);
@@ -729,7 +729,7 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
 
 		/* Constants, strings, and namestrings are all the same size */
 
-		arg = acpi_ps_alloc_op(AML_BYTE_OP);
+		arg = acpi_ps_alloc_op(AML_BYTE_OP, parser_state->aml);
 		if (!arg) {
 			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
@@ -776,7 +776,8 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
 
 			/* Non-empty list */
 
-			arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP);
+			arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP,
+					       parser_state->aml);
 			if (!arg) {
 				return_ACPI_STATUS(AE_NO_MEMORY);
 			}
@@ -806,7 +807,9 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
 
 			/* null_name or name_string */
 
-			arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
+			arg =
+			    acpi_ps_alloc_op(AML_INT_NAMEPATH_OP,
+					     parser_state->aml);
 			if (!arg) {
 				return_ACPI_STATUS(AE_NO_MEMORY);
 			}
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index d5843830fef80..49c60c2671ef5 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -137,7 +137,6 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
 			}
 
 			if (arg) {
-				arg->common.aml = walk_state->aml;
 				acpi_ps_append_arg(op, arg);
 			}
 
@@ -491,8 +490,6 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 				continue;
 			}
 
-			op->common.aml = walk_state->aml;
-
 			if (walk_state->op_info) {
 				ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
 						  "Opcode %4.4X [%s] Op %p Aml %p\n",
diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c
index 6ba3bb7402a95..e54bc2aa7a880 100644
--- a/drivers/acpi/acpica/psobject.c
+++ b/drivers/acpi/acpica/psobject.c
@@ -297,7 +297,7 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
 	/* Create Op structure and append to parent's argument list */
 
 	walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
-	op = acpi_ps_alloc_op(walk_state->opcode);
+	op = acpi_ps_alloc_op(walk_state->opcode, aml_op_start);
 	if (!op) {
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c
index a555f7f7b9a21..b857ad58022af 100644
--- a/drivers/acpi/acpica/psparse.c
+++ b/drivers/acpi/acpica/psparse.c
@@ -185,7 +185,8 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
 			 * op must be replaced by a placeholder return op
 			 */
 			replacement_op =
-			    acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
+			    acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP,
+					     op->common.aml);
 			if (!replacement_op) {
 				status = AE_NO_MEMORY;
 			}
@@ -209,7 +210,8 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
 			    || (op->common.parent->common.aml_opcode ==
 				AML_VAR_PACKAGE_OP)) {
 				replacement_op =
-				    acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
+				    acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP,
+						     op->common.aml);
 				if (!replacement_op) {
 					status = AE_NO_MEMORY;
 				}
@@ -224,7 +226,8 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
 					AML_VAR_PACKAGE_OP)) {
 					replacement_op =
 					    acpi_ps_alloc_op(op->common.
-							     aml_opcode);
+							     aml_opcode,
+							     op->common.aml);
 					if (!replacement_op) {
 						status = AE_NO_MEMORY;
 					} else {
@@ -240,7 +243,8 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
 		default:
 
 			replacement_op =
-			    acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
+			    acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP,
+					     op->common.aml);
 			if (!replacement_op) {
 				status = AE_NO_MEMORY;
 			}
diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c
index 32440912023a7..183cc1efbc518 100644
--- a/drivers/acpi/acpica/psutils.c
+++ b/drivers/acpi/acpica/psutils.c
@@ -60,11 +60,11 @@ ACPI_MODULE_NAME("psutils")
  * DESCRIPTION: Create a Scope and associated namepath op with the root name
  *
  ******************************************************************************/
-union acpi_parse_object *acpi_ps_create_scope_op(void)
+union acpi_parse_object *acpi_ps_create_scope_op(u8 *aml)
 {
 	union acpi_parse_object *scope_op;
 
-	scope_op = acpi_ps_alloc_op(AML_SCOPE_OP);
+	scope_op = acpi_ps_alloc_op(AML_SCOPE_OP, aml);
 	if (!scope_op) {
 		return (NULL);
 	}
@@ -103,6 +103,7 @@ void acpi_ps_init_op(union acpi_parse_object *op, u16 opcode)
  * FUNCTION:    acpi_ps_alloc_op
  *
  * PARAMETERS:  opcode          - Opcode that will be stored in the new Op
+ *              aml             - Address of the opcode
  *
  * RETURN:      Pointer to the new Op, null on failure
  *
@@ -112,7 +113,7 @@ void acpi_ps_init_op(union acpi_parse_object *op, u16 opcode)
  *
  ******************************************************************************/
 
-union acpi_parse_object *acpi_ps_alloc_op(u16 opcode)
+union acpi_parse_object *acpi_ps_alloc_op(u16 opcode, u8 *aml)
 {
 	union acpi_parse_object *op;
 	const struct acpi_opcode_info *op_info;
@@ -149,6 +150,7 @@ union acpi_parse_object *acpi_ps_alloc_op(u16 opcode)
 
 	if (op) {
 		acpi_ps_init_op(op, opcode);
+		op->common.aml = aml;
 		op->common.flags = flags;
 	}
 
diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c
index 841a5ea060942..1f3f46d44312e 100644
--- a/drivers/acpi/acpica/psxface.c
+++ b/drivers/acpi/acpica/psxface.c
@@ -256,7 +256,7 @@ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
 
 	/* Create and init a Root Node */
 
-	op = acpi_ps_create_scope_op();
+	op = acpi_ps_create_scope_op(info->obj_desc->method.aml_start);
 	if (!op) {
 		status = AE_NO_MEMORY;
 		goto cleanup;

From 07b9c91225055afeb2d75942fc36dd51c5553d90 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:31 +0800
Subject: [PATCH 05/22] ACPICA: Executer: Add back pointing reference of method
 operand

ACPICA commit 9dcd124e914e87495fbd1786d9484b962e0823e0

This patch adds back pointing reference of the namespace node for a method
operand. The namespace node then can be used in
acpi_ds_terminate_control_method() to obtain method full path to be used by
tracing facilities. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/9dcd124e
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acobject.h | 1 +
 drivers/acpi/acpica/excreate.c | 1 +
 drivers/acpi/acpica/utdelete.c | 3 +++
 3 files changed, 5 insertions(+)

diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index c81d98d09cace..0bd02c4a5f759 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -176,6 +176,7 @@ struct acpi_object_method {
 	u8 param_count;
 	u8 sync_level;
 	union acpi_operand_object *mutex;
+	union acpi_operand_object *node;
 	u8 *aml_start;
 	union {
 		acpi_internal_method implementation;
diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c
index aaeea4840aaa3..ccb7219bdcee2 100644
--- a/drivers/acpi/acpica/excreate.c
+++ b/drivers/acpi/acpica/excreate.c
@@ -486,6 +486,7 @@ acpi_ex_create_method(u8 * aml_start,
 
 	obj_desc->method.aml_start = aml_start;
 	obj_desc->method.aml_length = aml_length;
+	obj_desc->method.node = operand[0];
 
 	/*
 	 * Disassemble the method flags. Split off the arg_count, Serialized
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index 71fce389fd484..1638312e3d8f9 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -209,6 +209,9 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object)
 			acpi_ut_delete_object_desc(object->method.mutex);
 			object->method.mutex = NULL;
 		}
+		if (object->method.node) {
+			object->method.node = NULL;
+		}
 		break;
 
 	case ACPI_TYPE_REGION:

From d1e7ffe50ba588ddf7de520990815c37f31776d8 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:39 +0800
Subject: [PATCH 06/22] ACPICA: Namespace: Add function to directly return
 normalized full path

ACPICA commit 6e0229bb156d71675f2e07dc7960adb7ec0a60ea

This patch adds functions to return normalized full path instead of
"external path". The external path contains trailing "_" for each
name segment while the normalized full path doesn't contain the
trailing "_".

Currently this function is used by the method tracing users to specify a
none trailing "_" attached name path. Lv Zheng.

Note that we need to validate and switch all Linux kernel acpi_get_name()
users to use the new name type before removing the old name type from
ACPICA.

Link: https://github.com/acpica/acpica/commit/6e0229bb
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Ruiyi Zhang <ruiyi_zhang@hotmail.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acnamesp.h |  13 +-
 drivers/acpi/acpica/exdump.c   |   5 +-
 drivers/acpi/acpica/nsnames.c  | 275 +++++++++++++++++++--------------
 drivers/acpi/acpica/nsutils.c  |   2 +-
 drivers/acpi/acpica/nsxfname.c |   8 +-
 drivers/acpi/acpica/rscreate.c |   3 +-
 drivers/acpi/acpica/utmisc.c   |   2 +-
 include/acpi/actypes.h         |   3 +-
 8 files changed, 178 insertions(+), 133 deletions(-)

diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index 0dd088290d805..ea0d9076d4087 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -272,17 +272,20 @@ acpi_ns_check_package(struct acpi_evaluate_info *info,
  */
 u32 acpi_ns_opens_scope(acpi_object_type type);
 
-acpi_status
-acpi_ns_build_external_path(struct acpi_namespace_node *node,
-			    acpi_size size, char *name_buffer);
-
 char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node);
 
+u32
+acpi_ns_build_normalized_path(struct acpi_namespace_node *node,
+			      char *full_path, u32 path_size, u8 no_trailing);
+
+char *acpi_ns_get_normalized_pathname(struct acpi_namespace_node *node,
+				      u8 no_trailing);
+
 char *acpi_ns_name_of_current_scope(struct acpi_walk_state *walk_state);
 
 acpi_status
 acpi_ns_handle_to_pathname(acpi_handle target_handle,
-			   struct acpi_buffer *buffer);
+			   struct acpi_buffer *buffer, u8 no_trailing);
 
 u8
 acpi_ns_pattern_match(struct acpi_namespace_node *obj_node, char *search_for);
diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index 401e7edcd4193..b6495fb552f0b 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -995,9 +995,8 @@ static void acpi_ex_dump_reference_obj(union acpi_operand_object *obj_desc)
 	if (obj_desc->reference.class == ACPI_REFCLASS_NAME) {
 		acpi_os_printf(" %p ", obj_desc->reference.node);
 
-		status =
-		    acpi_ns_handle_to_pathname(obj_desc->reference.node,
-					       &ret_buf);
+		status = acpi_ns_handle_to_pathname(obj_desc->reference.node,
+						    &ret_buf, FALSE);
 		if (ACPI_FAILURE(status)) {
 			acpi_os_printf(" Could not convert name to pathname\n");
 		} else {
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index 2e37888f6abef..8934b4eddb731 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -49,73 +49,6 @@
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsnames")
 
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_build_external_path
- *
- * PARAMETERS:  node            - NS node whose pathname is needed
- *              size            - Size of the pathname
- *              *name_buffer    - Where to return the pathname
- *
- * RETURN:      Status
- *              Places the pathname into the name_buffer, in external format
- *              (name segments separated by path separators)
- *
- * DESCRIPTION: Generate a full pathaname
- *
- ******************************************************************************/
-acpi_status
-acpi_ns_build_external_path(struct acpi_namespace_node *node,
-			    acpi_size size, char *name_buffer)
-{
-	acpi_size index;
-	struct acpi_namespace_node *parent_node;
-
-	ACPI_FUNCTION_ENTRY();
-
-	/* Special case for root */
-
-	index = size - 1;
-	if (index < ACPI_NAME_SIZE) {
-		name_buffer[0] = AML_ROOT_PREFIX;
-		name_buffer[1] = 0;
-		return (AE_OK);
-	}
-
-	/* Store terminator byte, then build name backwards */
-
-	parent_node = node;
-	name_buffer[index] = 0;
-
-	while ((index > ACPI_NAME_SIZE) && (parent_node != acpi_gbl_root_node)) {
-		index -= ACPI_NAME_SIZE;
-
-		/* Put the name into the buffer */
-
-		ACPI_MOVE_32_TO_32((name_buffer + index), &parent_node->name);
-		parent_node = parent_node->parent;
-
-		/* Prefix name with the path separator */
-
-		index--;
-		name_buffer[index] = ACPI_PATH_SEPARATOR;
-	}
-
-	/* Overwrite final separator with the root prefix character */
-
-	name_buffer[index] = AML_ROOT_PREFIX;
-
-	if (index != 0) {
-		ACPI_ERROR((AE_INFO,
-			    "Could not construct external pathname; index=%u, size=%u, Path=%s",
-			    (u32)index, (u32)size, &name_buffer[size]));
-
-		return (AE_BAD_PARAMETER);
-	}
-
-	return (AE_OK);
-}
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_get_external_pathname
@@ -130,37 +63,13 @@ acpi_ns_build_external_path(struct acpi_namespace_node *node,
  *              for error and debug statements.
  *
  ******************************************************************************/
-
 char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
 {
-	acpi_status status;
 	char *name_buffer;
-	acpi_size size;
 
 	ACPI_FUNCTION_TRACE_PTR(ns_get_external_pathname, node);
 
-	/* Calculate required buffer size based on depth below root */
-
-	size = acpi_ns_get_pathname_length(node);
-	if (!size) {
-		return_PTR(NULL);
-	}
-
-	/* Allocate a buffer to be returned to caller */
-
-	name_buffer = ACPI_ALLOCATE_ZEROED(size);
-	if (!name_buffer) {
-		ACPI_ERROR((AE_INFO, "Could not allocate %u bytes", (u32)size));
-		return_PTR(NULL);
-	}
-
-	/* Build the path in the allocated buffer */
-
-	status = acpi_ns_build_external_path(node, size, name_buffer);
-	if (ACPI_FAILURE(status)) {
-		ACPI_FREE(name_buffer);
-		return_PTR(NULL);
-	}
+	name_buffer = acpi_ns_get_normalized_pathname(node, FALSE);
 
 	return_PTR(name_buffer);
 }
@@ -180,33 +89,12 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
 acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node)
 {
 	acpi_size size;
-	struct acpi_namespace_node *next_node;
 
 	ACPI_FUNCTION_ENTRY();
 
-	/*
-	 * Compute length of pathname as 5 * number of name segments.
-	 * Go back up the parent tree to the root
-	 */
-	size = 0;
-	next_node = node;
+	size = acpi_ns_build_normalized_path(node, NULL, 0, FALSE);
 
-	while (next_node && (next_node != acpi_gbl_root_node)) {
-		if (ACPI_GET_DESCRIPTOR_TYPE(next_node) != ACPI_DESC_TYPE_NAMED) {
-			ACPI_ERROR((AE_INFO,
-				    "Invalid Namespace Node (%p) while traversing namespace",
-				    next_node));
-			return (0);
-		}
-		size += ACPI_PATH_SEGMENT_LENGTH;
-		next_node = next_node->parent;
-	}
-
-	if (!size) {
-		size = 1;	/* Root node case */
-	}
-
-	return (size + 1);	/* +1 for null string terminator */
+	return (size);
 }
 
 /*******************************************************************************
@@ -216,6 +104,8 @@ acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node)
  * PARAMETERS:  target_handle           - Handle of named object whose name is
  *                                        to be found
  *              buffer                  - Where the pathname is returned
+ *              no_trailing             - Remove trailing '_' for each name
+ *                                        segment
  *
  * RETURN:      Status, Buffer is filled with pathname if status is AE_OK
  *
@@ -225,7 +115,7 @@ acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node)
 
 acpi_status
 acpi_ns_handle_to_pathname(acpi_handle target_handle,
-			   struct acpi_buffer * buffer)
+			   struct acpi_buffer * buffer, u8 no_trailing)
 {
 	acpi_status status;
 	struct acpi_namespace_node *node;
@@ -240,7 +130,8 @@ acpi_ns_handle_to_pathname(acpi_handle target_handle,
 
 	/* Determine size required for the caller buffer */
 
-	required_size = acpi_ns_get_pathname_length(node);
+	required_size =
+	    acpi_ns_build_normalized_path(node, NULL, 0, no_trailing);
 	if (!required_size) {
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
@@ -254,8 +145,8 @@ acpi_ns_handle_to_pathname(acpi_handle target_handle,
 
 	/* Build the path in the caller buffer */
 
-	status =
-	    acpi_ns_build_external_path(node, required_size, buffer->pointer);
+	(void)acpi_ns_build_normalized_path(node, buffer->pointer,
+					    required_size, no_trailing);
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
@@ -264,3 +155,149 @@ acpi_ns_handle_to_pathname(acpi_handle target_handle,
 			  (char *)buffer->pointer, (u32) required_size));
 	return_ACPI_STATUS(AE_OK);
 }
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_build_normalized_path
+ *
+ * PARAMETERS:  node        - Namespace node
+ *              full_path   - Where the path name is returned
+ *              path_size   - Size of returned path name buffer
+ *              no_trailing - Remove trailing '_' from each name segment
+ *
+ * RETURN:      Return 1 if the AML path is empty, otherwise returning (length
+ *              of pathname + 1) which means the 'FullPath' contains a trailing
+ *              null.
+ *
+ * DESCRIPTION: Build and return a full namespace pathname.
+ *              Note that if the size of 'FullPath' isn't large enough to
+ *              contain the namespace node's path name, the actual required
+ *              buffer length is returned, and it should be greater than
+ *              'PathSize'. So callers are able to check the returning value
+ *              to determine the buffer size of 'FullPath'.
+ *
+ ******************************************************************************/
+
+u32
+acpi_ns_build_normalized_path(struct acpi_namespace_node *node,
+			      char *full_path, u32 path_size, u8 no_trailing)
+{
+	u32 length = 0, i;
+	char name[ACPI_NAME_SIZE];
+	u8 do_no_trailing;
+	char c, *left, *right;
+	struct acpi_namespace_node *next_node;
+
+	ACPI_FUNCTION_TRACE_PTR(ns_build_normalized_path, node);
+
+#define ACPI_PATH_PUT8(path, size, byte, length)    \
+	do {                                            \
+		if ((length) < (size))                      \
+		{                                           \
+			(path)[(length)] = (byte);              \
+		}                                           \
+		(length)++;                                 \
+	} while (0)
+
+	/*
+	 * Make sure the path_size is correct, so that we don't need to
+	 * validate both full_path and path_size.
+	 */
+	if (!full_path) {
+		path_size = 0;
+	}
+
+	if (!node) {
+		goto build_trailing_null;
+	}
+
+	next_node = node;
+	while (next_node && next_node != acpi_gbl_root_node) {
+		if (next_node != node) {
+			ACPI_PATH_PUT8(full_path, path_size,
+				       AML_DUAL_NAME_PREFIX, length);
+		}
+		ACPI_MOVE_32_TO_32(name, &next_node->name);
+		do_no_trailing = no_trailing;
+		for (i = 0; i < 4; i++) {
+			c = name[4 - i - 1];
+			if (do_no_trailing && c != '_') {
+				do_no_trailing = FALSE;
+			}
+			if (!do_no_trailing) {
+				ACPI_PATH_PUT8(full_path, path_size, c, length);
+			}
+		}
+		next_node = next_node->parent;
+	}
+	ACPI_PATH_PUT8(full_path, path_size, AML_ROOT_PREFIX, length);
+
+	/* Reverse the path string */
+
+	if (length <= path_size) {
+		left = full_path;
+		right = full_path + length - 1;
+		while (left < right) {
+			c = *left;
+			*left++ = *right;
+			*right-- = c;
+		}
+	}
+
+	/* Append the trailing null */
+
+build_trailing_null:
+	ACPI_PATH_PUT8(full_path, path_size, '\0', length);
+
+#undef ACPI_PATH_PUT8
+
+	return_UINT32(length);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_get_normalized_pathname
+ *
+ * PARAMETERS:  node            - Namespace node whose pathname is needed
+ *              no_trailing     - Remove trailing '_' from each name segment
+ *
+ * RETURN:      Pointer to storage containing the fully qualified name of
+ *              the node, In external format (name segments separated by path
+ *              separators.)
+ *
+ * DESCRIPTION: Used to obtain the full pathname to a namespace node, usually
+ *              for error and debug statements. All trailing '_' will be
+ *              removed from the full pathname if 'NoTrailing' is specified..
+ *
+ ******************************************************************************/
+
+char *acpi_ns_get_normalized_pathname(struct acpi_namespace_node *node,
+				      u8 no_trailing)
+{
+	char *name_buffer;
+	acpi_size size;
+
+	ACPI_FUNCTION_TRACE_PTR(ns_get_normalized_pathname, node);
+
+	/* Calculate required buffer size based on depth below root */
+
+	size = acpi_ns_build_normalized_path(node, NULL, 0, no_trailing);
+	if (!size) {
+		return_PTR(NULL);
+	}
+
+	/* Allocate a buffer to be returned to caller */
+
+	name_buffer = ACPI_ALLOCATE_ZEROED(size);
+	if (!name_buffer) {
+		ACPI_ERROR((AE_INFO, "Could not allocate %u bytes", (u32)size));
+		return_PTR(NULL);
+	}
+
+	/* Build the path in the allocated buffer */
+
+	(void)acpi_ns_build_normalized_path(node, name_buffer, size,
+					    no_trailing);
+
+	return_PTR(name_buffer);
+}
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index 8d8104b8bd28a..9a34c5f040759 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -83,7 +83,7 @@ acpi_ns_print_node_pathname(struct acpi_namespace_node *node,
 
 	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
 
-	status = acpi_ns_handle_to_pathname(node, &buffer);
+	status = acpi_ns_handle_to_pathname(node, &buffer, FALSE);
 	if (ACPI_SUCCESS(status)) {
 		if (message) {
 			acpi_os_printf("%s ", message);
diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c
index 9ff643b9553fe..4b4d2f43d406f 100644
--- a/drivers/acpi/acpica/nsxfname.c
+++ b/drivers/acpi/acpica/nsxfname.c
@@ -172,11 +172,15 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer)
 		return (status);
 	}
 
-	if (name_type == ACPI_FULL_PATHNAME) {
+	if (name_type == ACPI_FULL_PATHNAME ||
+	    name_type == ACPI_FULL_PATHNAME_NO_TRAILING) {
 
 		/* Get the full pathname (From the namespace root) */
 
-		status = acpi_ns_handle_to_pathname(handle, buffer);
+		status = acpi_ns_handle_to_pathname(handle, buffer,
+						    name_type ==
+						    ACPI_FULL_PATHNAME ? FALSE :
+						    TRUE);
 		return (status);
 	}
 
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 3fa829e96c2a0..a5344428f3ae7 100644
--- a/drivers/acpi/acpica/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -348,7 +348,8 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
 				status =
 				    acpi_ns_handle_to_pathname((acpi_handle)
 							       node,
-							       &path_buffer);
+							       &path_buffer,
+							       FALSE);
 
 				/* +1 to include null terminator */
 
diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
index 71b66537f8260..98087ea1cdb3e 100644
--- a/drivers/acpi/acpica/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -376,7 +376,7 @@ acpi_ut_display_init_pathname(u8 type,
 	/* Get the full pathname to the node */
 
 	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
-	status = acpi_ns_handle_to_pathname(obj_handle, &buffer);
+	status = acpi_ns_handle_to_pathname(obj_handle, &buffer, FALSE);
 	if (ACPI_FAILURE(status)) {
 		return;
 	}
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index c2a41d223162a..0f3913f9a377a 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -985,7 +985,8 @@ struct acpi_buffer {
  */
 #define ACPI_FULL_PATHNAME              0
 #define ACPI_SINGLE_NAME                1
-#define ACPI_NAME_TYPE_MAX              1
+#define ACPI_FULL_PATHNAME_NO_TRAILING  2
+#define ACPI_NAME_TYPE_MAX              2
 
 /*
  * Predefined Namespace items

From 0bac4295526c67e87ec24b29762140c38de7c86a Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:46 +0800
Subject: [PATCH 07/22] ACPICA: Dispatcher: Move stack traversal code to
 dispatcher

ACPICA commit c8275e243b58fd4adfc0362bd704af41ed14bc75

This patch moves parts of acpi_dm_dump_method_info() to the dispatcher
component.

This patch also makes the new function dependent on ACPI_DEBUG_OUTPUT
compile-stage definition so that it can be used by the trace facility.

acpi_dm_dump_method_info() traverses method stack when an exception is
encountered. Such traversal is needed to support method tracing for the
exceptions. When an exception is encountered, the end indications of the
aborted methods should be logged in order not to break the user space
analysis tool. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/c8275e24
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/Makefile   |   1 +
 drivers/acpi/acpica/acdispat.h |   8 ++
 drivers/acpi/acpica/dsdebug.c  | 222 +++++++++++++++++++++++++++++++++
 drivers/acpi/acpica/dsmethod.c |   7 +-
 4 files changed, 235 insertions(+), 3 deletions(-)
 create mode 100644 drivers/acpi/acpica/dsdebug.c

diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index c1a963581dc0f..9f30ed7b1a07c 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -11,6 +11,7 @@ obj-y	+= acpi.o
 acpi-y :=		\
 	dsargs.o	\
 	dscontrol.o	\
+	dsdebug.o	\
 	dsfield.o	\
 	dsinit.o	\
 	dsmethod.o	\
diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h
index 408f04bcaab44..7094dc89eb816 100644
--- a/drivers/acpi/acpica/acdispat.h
+++ b/drivers/acpi/acpica/acdispat.h
@@ -354,4 +354,12 @@ acpi_status
 acpi_ds_result_push(union acpi_operand_object *object,
 		    struct acpi_walk_state *walk_state);
 
+/*
+ * dsdebug - parser debugging routines
+ */
+void
+acpi_ds_dump_method_stack(acpi_status status,
+			  struct acpi_walk_state *walk_state,
+			  union acpi_parse_object *op);
+
 #endif				/* _ACDISPAT_H_ */
diff --git a/drivers/acpi/acpica/dsdebug.c b/drivers/acpi/acpica/dsdebug.c
new file mode 100644
index 0000000000000..21c6cefd267e7
--- /dev/null
+++ b/drivers/acpi/acpica/dsdebug.c
@@ -0,0 +1,222 @@
+/******************************************************************************
+ *
+ * Module Name: dsdebug - Parser/Interpreter interface - debugging
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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 "accommon.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#ifdef ACPI_DISASSEMBLER
+#include "acdisasm.h"
+#endif
+
+#define _COMPONENT          ACPI_DISPATCHER
+ACPI_MODULE_NAME("dsdebug")
+
+#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
+/* Local prototypes */
+static void
+acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
+			    const char *message);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_print_node_pathname
+ *
+ * PARAMETERS:  node            - Object
+ *              message         - Prefix message
+ *
+ * DESCRIPTION: Print an object's full namespace pathname
+ *              Manages allocation/freeing of a pathname buffer
+ *
+ ******************************************************************************/
+
+static void
+acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
+			    const char *message)
+{
+	struct acpi_buffer buffer;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(ds_print_node_pathname);
+
+	if (!node) {
+		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[NULL NAME]"));
+		return_VOID;
+	}
+
+	/* Convert handle to full pathname and print it (with supplied message) */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+
+	status = acpi_ns_handle_to_pathname(node, &buffer, FALSE);
+	if (ACPI_SUCCESS(status)) {
+		if (message) {
+			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "%s ",
+					      message));
+		}
+
+		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[%s] (Node %p)",
+				      (char *)buffer.pointer, node));
+		ACPI_FREE(buffer.pointer);
+	}
+
+	return_VOID;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_dump_method_stack
+ *
+ * PARAMETERS:  status          - Method execution status
+ *              walk_state      - Current state of the parse tree walk
+ *              op              - Executing parse op
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Called when a method has been aborted because of an error.
+ *              Dumps the method execution stack.
+ *
+ ******************************************************************************/
+
+void
+acpi_ds_dump_method_stack(acpi_status status,
+			  struct acpi_walk_state *walk_state,
+			  union acpi_parse_object *op)
+{
+	union acpi_parse_object *next;
+	struct acpi_thread_state *thread;
+	struct acpi_walk_state *next_walk_state;
+	struct acpi_namespace_node *previous_method = NULL;
+
+	ACPI_FUNCTION_TRACE(ds_dump_method_stack);
+
+	/* Ignore control codes, they are not errors */
+
+	if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
+		return_VOID;
+	}
+
+	/* We may be executing a deferred opcode */
+
+	if (walk_state->deferred_node) {
+		ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+				  "Executing subtree for Buffer/Package/Region\n"));
+		return_VOID;
+	}
+
+	/*
+	 * If there is no Thread, we are not actually executing a method.
+	 * This can happen when the iASL compiler calls the interpreter
+	 * to perform constant folding.
+	 */
+	thread = walk_state->thread;
+	if (!thread) {
+		return_VOID;
+	}
+
+	/* Display exception and method name */
+
+	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+			  "\n**** Exception %s during execution of method ",
+			  acpi_format_exception(status)));
+	acpi_ds_print_node_pathname(walk_state->method_node, NULL);
+
+	/* Display stack of executing methods */
+
+	ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
+			      "\n\nMethod Execution Stack:\n"));
+	next_walk_state = thread->walk_state_list;
+
+	/* Walk list of linked walk states */
+
+	while (next_walk_state) {
+		ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+				  "    Method [%4.4s] executing: ",
+				  acpi_ut_get_node_name(next_walk_state->
+							method_node)));
+
+		/* First method is the currently executing method */
+
+		if (next_walk_state == walk_state) {
+			if (op) {
+
+				/* Display currently executing ASL statement */
+
+				next = op->common.next;
+				op->common.next = NULL;
+
+#ifdef ACPI_DISASSEMBLER
+				acpi_dm_disassemble(next_walk_state, op,
+						    ACPI_UINT32_MAX);
+#endif
+				op->common.next = next;
+			}
+		} else {
+			/*
+			 * This method has called another method
+			 * NOTE: the method call parse subtree is already deleted at this
+			 * point, so we cannot disassemble the method invocation.
+			 */
+			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
+					      "Call to method "));
+			acpi_ds_print_node_pathname(previous_method, NULL);
+		}
+
+		previous_method = next_walk_state->method_node;
+		next_walk_state = next_walk_state->next;
+		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "\n"));
+	}
+
+	return_VOID;
+}
+
+#else
+void
+acpi_ds_dump_method_stack(acpi_status status,
+			  struct acpi_walk_state *walk_state,
+			  union acpi_parse_object *op)
+{
+	return;
+}
+
+#endif
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 4abc2425de4ba..e0ae8f4e9b35c 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -251,14 +251,15 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state * walk_state)
 
 	acpi_ds_clear_implicit_return(walk_state);
 
-#ifdef ACPI_DISASSEMBLER
 	if (ACPI_FAILURE(status)) {
+		acpi_ds_dump_method_stack(status, walk_state, walk_state->op);
 
 		/* Display method locals/args if disassembler is present */
 
-		acpi_dm_dump_method_info(status, walk_state, walk_state->op);
-	}
+#ifdef ACPI_DISASSEMBLER
+		acpi_dm_dump_method_info(status, walk_state);
 #endif
+	}
 
 	return (status);
 }

From a616dc2fe50270f1fa5050fb9cd88a08531a3f25 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:53 +0800
Subject: [PATCH 08/22] ACPICA: Dispatcher: Add trace support for interpreter

ACPICA commit 71299ec8b49054daace0df50268e8e055654ca37

This patch adds trace point at the following point:
 1. Begin/end of a control method execution;
 2. Begin/end of an opcode execution.

The trace point feature can be enabled by defining ACPI_DEBUG_OUTPUT
and specifying a debug level that includes ACPI_LV_TRACDE_POINT and the
debug layers that include ACPI_PARSER and ACPI_DISPACTCHER.

In order to make aml_op_name of union acpi_parse_object usable for tracer, it is
enabled for ACPI_DEBUG_OUTPUT in this patch. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/71299ec8
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/aclocal.h  |  2 +-
 drivers/acpi/acpica/dsdebug.c  | 24 ++++++++++++++++++++++++
 drivers/acpi/acpica/dsmethod.c | 31 +++++++++++++++++++++++++++++++
 drivers/acpi/acpica/psloop.c   | 15 +++++++++++++++
 drivers/acpi/acpica/psparse.c  |  4 ++++
 include/acpi/acoutput.h        |  4 +++-
 6 files changed, 78 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 607e62897aff3..610d001fbb31d 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -715,7 +715,7 @@ union acpi_parse_value {
 	union acpi_parse_object *arg;	/* arguments and contained ops */
 };
 
-#ifdef ACPI_DISASSEMBLER
+#if defined(ACPI_DISASSEMBLER) || defined(ACPI_DEBUG_OUTPUT)
 #define ACPI_DISASM_ONLY_MEMBERS(a)     a;
 #else
 #define ACPI_DISASM_ONLY_MEMBERS(a)
diff --git a/drivers/acpi/acpica/dsdebug.c b/drivers/acpi/acpica/dsdebug.c
index 21c6cefd267e7..7df9b50e17a7d 100644
--- a/drivers/acpi/acpica/dsdebug.c
+++ b/drivers/acpi/acpica/dsdebug.c
@@ -127,6 +127,8 @@ acpi_ds_dump_method_stack(acpi_status status,
 	struct acpi_thread_state *thread;
 	struct acpi_walk_state *next_walk_state;
 	struct acpi_namespace_node *previous_method = NULL;
+	union acpi_operand_object *method_desc;
+	char *pathname = NULL;
 
 	ACPI_FUNCTION_TRACE(ds_dump_method_stack);
 
@@ -170,6 +172,28 @@ acpi_ds_dump_method_stack(acpi_status status,
 	/* Walk list of linked walk states */
 
 	while (next_walk_state) {
+		method_desc = next_walk_state->method_desc;
+		if (method_desc && method_desc->method.node) {
+			pathname = acpi_ns_get_normalized_pathname((struct
+								    acpi_namespace_node
+								    *)
+								   method_desc->
+								   method.node,
+								   TRUE);
+		}
+		if (pathname) {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "End method [0x%p:%s] execution.\n",
+					  method_desc->method.aml_start,
+					  pathname));
+			ACPI_FREE(pathname);
+			pathname = NULL;
+		} else {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "End method [0x%p] execution.\n",
+					  method_desc->method.aml_start));
+		}
+
 		ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 				  "    Method [%4.4s] executing: ",
 				  acpi_ut_get_node_name(next_walk_state->
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index e0ae8f4e9b35c..0fa6f19aab3a8 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -327,6 +327,7 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
 			       struct acpi_walk_state *walk_state)
 {
 	acpi_status status = AE_OK;
+	char *pathname = NULL;
 
 	ACPI_FUNCTION_TRACE_PTR(ds_begin_method_execution, method_node);
 
@@ -334,6 +335,18 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
 		return_ACPI_STATUS(AE_NULL_ENTRY);
 	}
 
+	pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
+	if (pathname) {
+		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+				  "Begin method [0x%p:%s] execution.\n",
+				  obj_desc->method.aml_start, pathname));
+		ACPI_FREE(pathname);
+	} else {
+		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+				  "Begin method [0x%p] execution.\n",
+				  obj_desc->method.aml_start));
+	}
+
 	/* Prevent wraparound of thread count */
 
 	if (obj_desc->method.thread_count == ACPI_UINT8_MAX) {
@@ -695,6 +708,7 @@ void
 acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
 				 struct acpi_walk_state *walk_state)
 {
+	char *pathname = NULL;
 
 	ACPI_FUNCTION_TRACE_PTR(ds_terminate_control_method, walk_state);
 
@@ -832,5 +846,22 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
 		}
 	}
 
+	if (method_desc->method.node) {
+		pathname = acpi_ns_get_normalized_pathname((struct
+							    acpi_namespace_node
+							    *)method_desc->
+							   method.node, TRUE);
+	}
+	if (pathname) {
+		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+				  "End method [0x%p:%s] execution.\n",
+				  method_desc->method.aml_start, pathname));
+		ACPI_FREE(pathname);
+	} else {
+		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+				  "End method [0x%p] execution.\n",
+				  method_desc->method.aml_start));
+	}
+
 	return_VOID;
 }
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 49c60c2671ef5..80339ba56cad0 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -497,6 +497,21 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 						  walk_state->op_info->name, op,
 						  op->common.aml));
 			}
+
+			if (walk_state->op_info) {
+				ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+						  "Begin opcode: %s[0x%p] Class=0x%02x, Type=0x%02x, Flags=0x%04x.\n",
+						  op->common.aml_op_name,
+						  op->common.aml,
+						  walk_state->op_info->class,
+						  walk_state->op_info->type,
+						  walk_state->op_info->flags));
+			} else {
+				ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+						  "Begin opcode: %s[0x%p].\n",
+						  op->common.aml_op_name,
+						  op->common.aml));
+			}
 		}
 
 		/*
diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c
index b857ad58022af..97ea0e5360f16 100644
--- a/drivers/acpi/acpica/psparse.c
+++ b/drivers/acpi/acpica/psparse.c
@@ -147,6 +147,10 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
 		return_ACPI_STATUS(AE_OK);	/* OK for now */
 	}
 
+	ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+			  "End opcode: %s[0x%p].\n",
+			  op->common.aml_op_name, op->common.aml));
+
 	/* Delete this op and the subtree below it if asked to */
 
 	if (((walk_state->parse_flags & ACPI_PARSE_TREE_MASK) !=
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index f56de8c5d844d..8f89df9c7295b 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -88,7 +88,8 @@
 #define ACPI_LV_DEBUG_OBJECT        0x00000002
 #define ACPI_LV_INFO                0x00000004
 #define ACPI_LV_REPAIR              0x00000008
-#define ACPI_LV_ALL_EXCEPTIONS      0x0000000F
+#define ACPI_LV_TRACE_POINT         0x00000010
+#define ACPI_LV_ALL_EXCEPTIONS      0x0000001F
 
 /* Trace verbosity level 1 [Standard Trace Level] */
 
@@ -147,6 +148,7 @@
 #define ACPI_DB_DEBUG_OBJECT        ACPI_DEBUG_LEVEL (ACPI_LV_DEBUG_OBJECT)
 #define ACPI_DB_INFO                ACPI_DEBUG_LEVEL (ACPI_LV_INFO)
 #define ACPI_DB_REPAIR              ACPI_DEBUG_LEVEL (ACPI_LV_REPAIR)
+#define ACPI_DB_TRACE_POINT         ACPI_DEBUG_LEVEL (ACPI_LV_TRACE_POINT)
 #define ACPI_DB_ALL_EXCEPTIONS      ACPI_DEBUG_LEVEL (ACPI_LV_ALL_EXCEPTIONS)
 
 /* Trace level -- also used in the global "DebugLevel" */

From ab6c573320768c36ac629be3db79ad62445aae64 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:52:59 +0800
Subject: [PATCH 09/22] ACPICA: Executer: Add interpreter tracing mode for
 method tracing facility

ACPICA commit 07fffd02607685b655ed92ee15c160e6a810b60b

The acpi_debug_trace() is the mechanism known as ACPI method tracing that is
used by Linux as ACPICA debugging message reducer. This facility can be
controlled through Linux ACPI subsystem - /sys/module/acpi/parameters.
This facility requires CONFIG_ACPI_DEBUG to be enabled to see ACPICA trace
logs in the kernel dmesg output.

This patch enhances acpi_debug_trace() to make it not only a message reducer,
but a real tracer to trace AML interpreter execution. Note that in addition
to the AML tracer enabling, this patch also updates the facility with the
following enhancements:
1. Allow a full path to be specified by the acpi_debug_trace() API.
2. Allow any method rather than just the entrance of acpi_evaluate_object()
   to be traced.
3. All interpreter ACPI_LV_TRACE_POINT messages are collected for
   ACPI_EXECUTER layer.

The Makefile of drivers/acpi/acpica is also updated to include exdebug.o
and the duplicated stubs are removed after that.

Note that since this patch has enhanced the method tracing facility, Linux
need also be updated after applying this patch. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/07fffd02
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acdebug.h  |   2 +
 drivers/acpi/acpica/acglobal.h |   2 -
 drivers/acpi/acpica/acinterp.h |  18 +++
 drivers/acpi/acpica/dsdebug.c  |  25 +--
 drivers/acpi/acpica/dsmethod.c |  32 +---
 drivers/acpi/acpica/exdebug.c  | 271 +++++++++++++++++++++++++++++++++
 drivers/acpi/acpica/psloop.c   |  16 +-
 drivers/acpi/acpica/psparse.c  |   4 +-
 drivers/acpi/acpica/psxface.c  | 121 +--------------
 drivers/acpi/acpica/utinit.c   |   2 -
 include/acpi/acoutput.h        |  13 ++
 include/acpi/acpixf.h          |   6 +-
 12 files changed, 327 insertions(+), 185 deletions(-)

diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h
index 43685dd36c77c..88482f75e9415 100644
--- a/drivers/acpi/acpica/acdebug.h
+++ b/drivers/acpi/acpica/acdebug.h
@@ -102,6 +102,8 @@ void acpi_db_display_interfaces(char *action_arg, char *interface_name_arg);
 
 acpi_status acpi_db_sleep(char *object_arg);
 
+void acpi_db_trace(char *enable_arg, char *method_arg, char *once_arg);
+
 void acpi_db_display_locks(void);
 
 void acpi_db_display_resources(char *object_arg);
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 53f96a3707624..5342300719ee7 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -290,8 +290,6 @@ ACPI_GLOBAL(u32, acpi_fixed_event_count[ACPI_NUM_FIXED_EVENTS]);
 
 ACPI_GLOBAL(u32, acpi_gbl_original_dbg_level);
 ACPI_GLOBAL(u32, acpi_gbl_original_dbg_layer);
-ACPI_GLOBAL(u32, acpi_gbl_trace_dbg_level);
-ACPI_GLOBAL(u32, acpi_gbl_trace_dbg_layer);
 
 /*****************************************************************************
  *
diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h
index 7ac98000b46b6..a3c6e2ab93bb4 100644
--- a/drivers/acpi/acpica/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
@@ -131,6 +131,24 @@ void
 acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
 			u32 level, u32 index);
 
+void
+acpi_ex_start_trace_method(struct acpi_namespace_node *method_node,
+			   union acpi_operand_object *obj_desc,
+			   struct acpi_walk_state *walk_state);
+
+void
+acpi_ex_stop_trace_method(struct acpi_namespace_node *method_node,
+			  union acpi_operand_object *obj_desc,
+			  struct acpi_walk_state *walk_state);
+
+void
+acpi_ex_start_trace_opcode(union acpi_parse_object *op,
+			   struct acpi_walk_state *walk_state);
+
+void
+acpi_ex_stop_trace_opcode(union acpi_parse_object *op,
+			  struct acpi_walk_state *walk_state);
+
 /*
  * exfield - ACPI AML (p-code) execution - field manipulation
  */
diff --git a/drivers/acpi/acpica/dsdebug.c b/drivers/acpi/acpica/dsdebug.c
index 7df9b50e17a7d..a651d30133d03 100644
--- a/drivers/acpi/acpica/dsdebug.c
+++ b/drivers/acpi/acpica/dsdebug.c
@@ -48,6 +48,7 @@
 #ifdef ACPI_DISASSEMBLER
 #include "acdisasm.h"
 #endif
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsdebug")
@@ -128,7 +129,6 @@ acpi_ds_dump_method_stack(acpi_status status,
 	struct acpi_walk_state *next_walk_state;
 	struct acpi_namespace_node *previous_method = NULL;
 	union acpi_operand_object *method_desc;
-	char *pathname = NULL;
 
 	ACPI_FUNCTION_TRACE(ds_dump_method_stack);
 
@@ -173,25 +173,10 @@ acpi_ds_dump_method_stack(acpi_status status,
 
 	while (next_walk_state) {
 		method_desc = next_walk_state->method_desc;
-		if (method_desc && method_desc->method.node) {
-			pathname = acpi_ns_get_normalized_pathname((struct
-								    acpi_namespace_node
-								    *)
-								   method_desc->
-								   method.node,
-								   TRUE);
-		}
-		if (pathname) {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "End method [0x%p:%s] execution.\n",
-					  method_desc->method.aml_start,
-					  pathname));
-			ACPI_FREE(pathname);
-			pathname = NULL;
-		} else {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "End method [0x%p] execution.\n",
-					  method_desc->method.aml_start));
+		if (method_desc) {
+			acpi_ex_stop_trace_method((struct acpi_namespace_node *)
+						  method_desc->method.node,
+						  method_desc, walk_state);
 		}
 
 		ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 0fa6f19aab3a8..ea2bdde1227ef 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -327,7 +327,6 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
 			       struct acpi_walk_state *walk_state)
 {
 	acpi_status status = AE_OK;
-	char *pathname = NULL;
 
 	ACPI_FUNCTION_TRACE_PTR(ds_begin_method_execution, method_node);
 
@@ -335,17 +334,7 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
 		return_ACPI_STATUS(AE_NULL_ENTRY);
 	}
 
-	pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
-	if (pathname) {
-		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-				  "Begin method [0x%p:%s] execution.\n",
-				  obj_desc->method.aml_start, pathname));
-		ACPI_FREE(pathname);
-	} else {
-		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-				  "Begin method [0x%p] execution.\n",
-				  obj_desc->method.aml_start));
-	}
+	acpi_ex_start_trace_method(method_node, obj_desc, walk_state);
 
 	/* Prevent wraparound of thread count */
 
@@ -708,7 +697,6 @@ void
 acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
 				 struct acpi_walk_state *walk_state)
 {
-	char *pathname = NULL;
 
 	ACPI_FUNCTION_TRACE_PTR(ds_terminate_control_method, walk_state);
 
@@ -846,22 +834,8 @@ acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
 		}
 	}
 
-	if (method_desc->method.node) {
-		pathname = acpi_ns_get_normalized_pathname((struct
-							    acpi_namespace_node
-							    *)method_desc->
-							   method.node, TRUE);
-	}
-	if (pathname) {
-		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-				  "End method [0x%p:%s] execution.\n",
-				  method_desc->method.aml_start, pathname));
-		ACPI_FREE(pathname);
-	} else {
-		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-				  "End method [0x%p] execution.\n",
-				  method_desc->method.aml_start));
-	}
+	acpi_ex_stop_trace_method((struct acpi_namespace_node *)method_desc->
+				  method.node, method_desc, walk_state);
 
 	return_VOID;
 }
diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c
index 815442bbd0518..00ba9fc85f473 100644
--- a/drivers/acpi/acpica/exdebug.c
+++ b/drivers/acpi/acpica/exdebug.c
@@ -43,11 +43,15 @@
 
 #include <acpi/acpi.h>
 #include "accommon.h"
+#include "acnamesp.h"
 #include "acinterp.h"
+#include "acparser.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exdebug")
 
+static union acpi_operand_object *acpi_gbl_trace_method_object = NULL;
+
 #ifndef ACPI_NO_ERROR_MESSAGES
 /*******************************************************************************
  *
@@ -70,6 +74,7 @@ ACPI_MODULE_NAME("exdebug")
  * enabled if necessary.
  *
  ******************************************************************************/
+
 void
 acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
 			u32 level, u32 index)
@@ -308,3 +313,269 @@ acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
 	return_VOID;
 }
 #endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_interpreter_trace_enabled
+ *
+ * PARAMETERS:  name                - Whether method name should be matched,
+ *                                    this should be checked before starting
+ *                                    the tracer
+ *
+ * RETURN:      TRUE if interpreter trace is enabled.
+ *
+ * DESCRIPTION: Check whether interpreter trace is enabled
+ *
+ ******************************************************************************/
+
+static u8 acpi_ex_interpreter_trace_enabled(char *name)
+{
+
+	/* Check if tracing is enabled */
+
+	if (!(acpi_gbl_trace_flags & ACPI_TRACE_ENABLED)) {
+		return (FALSE);
+	}
+
+	/*
+	 * Check if tracing is filtered:
+	 *
+	 * 1. If the tracer is started, acpi_gbl_trace_method_object should have
+	 *    been filled by the trace starter
+	 * 2. If the tracer is not started, acpi_gbl_trace_method_name should be
+	 *    matched if it is specified
+	 * 3. If the tracer is oneshot style, acpi_gbl_trace_method_name should
+	 *    not be cleared by the trace stopper during the first match
+	 */
+	if (acpi_gbl_trace_method_object) {
+		return (TRUE);
+	}
+	if (name &&
+	    (acpi_gbl_trace_method_name &&
+	     strcmp(acpi_gbl_trace_method_name, name))) {
+		return (FALSE);
+	}
+	if ((acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT) &&
+	    !acpi_gbl_trace_method_name) {
+		return (FALSE);
+	}
+
+	return (TRUE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_start_trace_method
+ *
+ * PARAMETERS:  method_node         - Node of the method
+ *              obj_desc            - The method object
+ *              walk_state          - current state, NULL if not yet executing
+ *                                    a method.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Start control method execution trace
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_start_trace_method(struct acpi_namespace_node *method_node,
+			   union acpi_operand_object *obj_desc,
+			   struct acpi_walk_state *walk_state)
+{
+	acpi_status status;
+	char *pathname = NULL;
+	u8 enabled = FALSE;
+
+	ACPI_FUNCTION_NAME(ex_start_trace_method);
+
+	if (method_node) {
+		pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
+	}
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE(status)) {
+		goto exit;
+	}
+
+	enabled = acpi_ex_interpreter_trace_enabled(pathname);
+	if (enabled && !acpi_gbl_trace_method_object) {
+		acpi_gbl_trace_method_object = obj_desc;
+		acpi_gbl_original_dbg_level = acpi_dbg_level;
+		acpi_gbl_original_dbg_layer = acpi_dbg_layer;
+		acpi_dbg_level = ACPI_TRACE_LEVEL_ALL;
+		acpi_dbg_layer = ACPI_TRACE_LAYER_ALL;
+
+		if (acpi_gbl_trace_dbg_level) {
+			acpi_dbg_level = acpi_gbl_trace_dbg_level;
+		}
+		if (acpi_gbl_trace_dbg_layer) {
+			acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
+		}
+	}
+	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+
+exit:
+	if (enabled) {
+		if (pathname) {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "Begin method [0x%p:%s] execution.\n",
+					  obj_desc->method.aml_start,
+					  pathname));
+		} else {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "Begin method [0x%p] execution.\n",
+					  obj_desc->method.aml_start));
+		}
+	}
+	if (pathname) {
+		ACPI_FREE(pathname);
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_stop_trace_method
+ *
+ * PARAMETERS:  method_node         - Node of the method
+ *              obj_desc            - The method object
+ *              walk_state          - current state, NULL if not yet executing
+ *                                    a method.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Stop control method execution trace
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_stop_trace_method(struct acpi_namespace_node *method_node,
+			  union acpi_operand_object *obj_desc,
+			  struct acpi_walk_state *walk_state)
+{
+	acpi_status status;
+	char *pathname = NULL;
+	u8 enabled;
+
+	ACPI_FUNCTION_NAME(ex_stop_trace_method);
+
+	if (method_node) {
+		pathname = acpi_ns_get_normalized_pathname(method_node, TRUE);
+	}
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE(status)) {
+		goto exit_path;
+	}
+
+	enabled = acpi_ex_interpreter_trace_enabled(NULL);
+
+	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+
+	if (enabled) {
+		if (pathname) {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "End method [0x%p:%s] execution.\n",
+					  obj_desc->method.aml_start,
+					  pathname));
+		} else {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "End method [0x%p] execution.\n",
+					  obj_desc->method.aml_start));
+		}
+	}
+
+	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	if (ACPI_FAILURE(status)) {
+		goto exit_path;
+	}
+
+	/* Check whether the tracer should be stopped */
+
+	if (acpi_gbl_trace_method_object == obj_desc) {
+
+		/* Disable further tracing if type is one-shot */
+
+		if (acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT) {
+			acpi_gbl_trace_method_name = NULL;
+		}
+
+		acpi_dbg_level = acpi_gbl_original_dbg_level;
+		acpi_dbg_layer = acpi_gbl_original_dbg_layer;
+		acpi_gbl_trace_method_object = NULL;
+	}
+
+	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+
+exit_path:
+	if (pathname) {
+		ACPI_FREE(pathname);
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_start_trace_opcode
+ *
+ * PARAMETERS:  op                  - The parser opcode object
+ *              walk_state          - current state, NULL if not yet executing
+ *                                    a method.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Start opcode execution trace
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_start_trace_opcode(union acpi_parse_object *op,
+			   struct acpi_walk_state *walk_state)
+{
+
+	ACPI_FUNCTION_NAME(ex_start_trace_opcode);
+
+	if (acpi_ex_interpreter_trace_enabled(NULL)) {
+		if (walk_state->op_info) {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "Begin opcode: %s[0x%p] Class=0x%02x, Type=0x%02x, Flags=0x%04x.\n",
+					  op->common.aml_op_name,
+					  op->common.aml,
+					  walk_state->op_info->class,
+					  walk_state->op_info->type,
+					  walk_state->op_info->flags));
+		} else {
+			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+					  "Begin opcode: %s[0x%p].\n",
+					  op->common.aml_op_name,
+					  op->common.aml));
+		}
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_stop_trace_opcode
+ *
+ * PARAMETERS:  op                  - The parser opcode object
+ *              walk_state          - current state, NULL if not yet executing
+ *                                    a method.
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Stop opcode execution trace
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_stop_trace_opcode(union acpi_parse_object *op,
+			  struct acpi_walk_state *walk_state)
+{
+
+	ACPI_FUNCTION_NAME(ex_stop_trace_opcode);
+
+	if (acpi_ex_interpreter_trace_enabled(NULL)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+				  "End opcode: %s[0x%p].\n",
+				  op->common.aml_op_name, op->common.aml));
+	}
+}
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 80339ba56cad0..a7de52ee15383 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -51,6 +51,7 @@
 
 #include <acpi/acpi.h>
 #include "accommon.h"
+#include "acinterp.h"
 #include "acparser.h"
 #include "acdispat.h"
 #include "amlcode.h"
@@ -498,20 +499,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 						  op->common.aml));
 			}
 
-			if (walk_state->op_info) {
-				ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-						  "Begin opcode: %s[0x%p] Class=0x%02x, Type=0x%02x, Flags=0x%04x.\n",
-						  op->common.aml_op_name,
-						  op->common.aml,
-						  walk_state->op_info->class,
-						  walk_state->op_info->type,
-						  walk_state->op_info->flags));
-			} else {
-				ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-						  "Begin opcode: %s[0x%p].\n",
-						  op->common.aml_op_name,
-						  op->common.aml));
-			}
+			acpi_ex_start_trace_opcode(op, walk_state);
 		}
 
 		/*
diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c
index 97ea0e5360f16..98001d7f6f803 100644
--- a/drivers/acpi/acpica/psparse.c
+++ b/drivers/acpi/acpica/psparse.c
@@ -147,9 +147,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
 		return_ACPI_STATUS(AE_OK);	/* OK for now */
 	}
 
-	ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-			  "End opcode: %s[0x%p].\n",
-			  op->common.aml_op_name, op->common.aml));
+	acpi_ex_stop_trace_opcode(op, walk_state);
 
 	/* Delete this op and the subtree below it if asked to */
 
diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c
index 1f3f46d44312e..4254805dd319a 100644
--- a/drivers/acpi/acpica/psxface.c
+++ b/drivers/acpi/acpica/psxface.c
@@ -47,15 +47,12 @@
 #include "acdispat.h"
 #include "acinterp.h"
 #include "actables.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psxface")
 
 /* Local Prototypes */
-static void acpi_ps_start_trace(struct acpi_evaluate_info *info);
-
-static void acpi_ps_stop_trace(struct acpi_evaluate_info *info);
-
 static void
 acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);
 
@@ -76,7 +73,7 @@ acpi_ps_update_parameter_list(struct acpi_evaluate_info *info, u16 action);
  ******************************************************************************/
 
 acpi_status
-acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags)
+acpi_debug_trace(const char *name, u32 debug_level, u32 debug_layer, u32 flags)
 {
 	acpi_status status;
 
@@ -85,108 +82,14 @@ acpi_debug_trace(char *name, u32 debug_level, u32 debug_layer, u32 flags)
 		return (status);
 	}
 
-	/* TBDs: Validate name, allow full path or just nameseg */
-
-	acpi_gbl_trace_method_name = *ACPI_CAST_PTR(u32, name);
+	acpi_gbl_trace_method_name = name;
 	acpi_gbl_trace_flags = flags;
-
-	if (debug_level) {
-		acpi_gbl_trace_dbg_level = debug_level;
-	}
-	if (debug_layer) {
-		acpi_gbl_trace_dbg_layer = debug_layer;
-	}
+	acpi_gbl_trace_dbg_level = debug_level;
+	acpi_gbl_trace_dbg_layer = debug_layer;
+	status = AE_OK;
 
 	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-	return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ps_start_trace
- *
- * PARAMETERS:  info        - Method info struct
- *
- * RETURN:      None
- *
- * DESCRIPTION: Start control method execution trace
- *
- ******************************************************************************/
-
-static void acpi_ps_start_trace(struct acpi_evaluate_info *info)
-{
-	acpi_status status;
-
-	ACPI_FUNCTION_ENTRY();
-
-	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
-	if (ACPI_FAILURE(status)) {
-		return;
-	}
-
-	if ((!acpi_gbl_trace_method_name) ||
-	    (acpi_gbl_trace_method_name != info->node->name.integer)) {
-		goto exit;
-	}
-
-	acpi_gbl_original_dbg_level = acpi_dbg_level;
-	acpi_gbl_original_dbg_layer = acpi_dbg_layer;
-
-	acpi_dbg_level = 0x00FFFFFF;
-	acpi_dbg_layer = ACPI_UINT32_MAX;
-
-	if (acpi_gbl_trace_dbg_level) {
-		acpi_dbg_level = acpi_gbl_trace_dbg_level;
-	}
-	if (acpi_gbl_trace_dbg_layer) {
-		acpi_dbg_layer = acpi_gbl_trace_dbg_layer;
-	}
-
-exit:
-	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ps_stop_trace
- *
- * PARAMETERS:  info        - Method info struct
- *
- * RETURN:      None
- *
- * DESCRIPTION: Stop control method execution trace
- *
- ******************************************************************************/
-
-static void acpi_ps_stop_trace(struct acpi_evaluate_info *info)
-{
-	acpi_status status;
-
-	ACPI_FUNCTION_ENTRY();
-
-	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
-	if (ACPI_FAILURE(status)) {
-		return;
-	}
-
-	if ((!acpi_gbl_trace_method_name) ||
-	    (acpi_gbl_trace_method_name != info->node->name.integer)) {
-		goto exit;
-	}
-
-	/* Disable further tracing if type is one-shot */
-
-	if (acpi_gbl_trace_flags & 1) {
-		acpi_gbl_trace_method_name = 0;
-		acpi_gbl_trace_dbg_level = 0;
-		acpi_gbl_trace_dbg_layer = 0;
-	}
-
-	acpi_dbg_level = acpi_gbl_original_dbg_level;
-	acpi_dbg_layer = acpi_gbl_original_dbg_layer;
-
-exit:
-	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+	return (status);
 }
 
 /*******************************************************************************
@@ -212,7 +115,7 @@ static void acpi_ps_stop_trace(struct acpi_evaluate_info *info)
  *
  ******************************************************************************/
 
-acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
+acpi_status acpi_ps_execute_method(struct acpi_evaluate_info * info)
 {
 	acpi_status status;
 	union acpi_parse_object *op;
@@ -243,10 +146,6 @@ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
 	 */
 	acpi_ps_update_parameter_list(info, REF_INCREMENT);
 
-	/* Begin tracing if requested */
-
-	acpi_ps_start_trace(info);
-
 	/*
 	 * Execute the method. Performs parse simultaneously
 	 */
@@ -326,10 +225,6 @@ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
 cleanup:
 	acpi_ps_delete_parse_tree(op);
 
-	/* End optional tracing */
-
-	acpi_ps_stop_trace(info);
-
 	/* Take away the extra reference that we gave the parameters above */
 
 	acpi_ps_update_parameter_list(info, REF_DECREMENT);
diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c
index e402e07b48466..7f897c63aa5be 100644
--- a/drivers/acpi/acpica/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -204,8 +204,6 @@ acpi_status acpi_ut_init_globals(void)
 	acpi_gbl_acpi_hardware_present = TRUE;
 	acpi_gbl_last_owner_id_index = 0;
 	acpi_gbl_next_owner_id_offset = 0;
-	acpi_gbl_trace_dbg_level = 0;
-	acpi_gbl_trace_dbg_layer = 0;
 	acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
 	acpi_gbl_osi_mutex = NULL;
 	acpi_gbl_reg_methods_executed = FALSE;
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index 8f89df9c7295b..37f46d49a74a6 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -184,6 +184,19 @@
 #define ACPI_NORMAL_DEFAULT         (ACPI_LV_INIT | ACPI_LV_DEBUG_OBJECT | ACPI_LV_REPAIR)
 #define ACPI_DEBUG_ALL              (ACPI_LV_AML_DISASSEMBLE | ACPI_LV_ALL_EXCEPTIONS | ACPI_LV_ALL)
 
+/*
+ * Global trace flags
+ */
+#define ACPI_TRACE_ENABLED          ((u32) 2)
+#define ACPI_TRACE_ONESHOT          ((u32) 1)
+
+/* Defaults for trace debugging level/layer */
+
+#define ACPI_TRACE_LEVEL_ALL        ACPI_LV_ALL
+#define ACPI_TRACE_LAYER_ALL        0x000001FF
+#define ACPI_TRACE_LEVEL_DEFAULT    ACPI_LV_TRACE_POINT
+#define ACPI_TRACE_LAYER_DEFAULT    ACPI_EXECUTER
+
 #if defined (ACPI_DEBUG_OUTPUT) || !defined (ACPI_NO_ERROR_MESSAGES)
 /*
  * The module name is used primarily for error and debug messages.
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index e8ec18a4a634d..9c362cf142641 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -251,7 +251,9 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_reduced_hardware, FALSE);
  * traced each time it is executed.
  */
 ACPI_INIT_GLOBAL(u32, acpi_gbl_trace_flags, 0);
-ACPI_INIT_GLOBAL(acpi_name, acpi_gbl_trace_method_name, 0);
+ACPI_INIT_GLOBAL(const char *, acpi_gbl_trace_method_name, NULL);
+ACPI_INIT_GLOBAL(u32, acpi_gbl_trace_dbg_level, ACPI_TRACE_LEVEL_DEFAULT);
+ACPI_INIT_GLOBAL(u32, acpi_gbl_trace_dbg_layer, ACPI_TRACE_LAYER_DEFAULT);
 
 /*
  * Runtime configuration of debug output control masks. We want the debug
@@ -504,7 +506,7 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status
 					   acpi_object_handler handler,
 					   void **data))
 ACPI_EXTERNAL_RETURN_STATUS(acpi_status
-			     acpi_debug_trace(char *name, u32 debug_level,
+			     acpi_debug_trace(const char *name, u32 debug_level,
 					      u32 debug_layer, u32 flags))
 
 /*

From bab0482418885627babfd1a6ca4e57a809712474 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:53:07 +0800
Subject: [PATCH 10/22] ACPICA: Executer: Add OSL trace hook support

ACPICA commit e8e4a9b19d0b72a7b165398bdc961fc2f6f502ec

This patch adds OSL trace hook support.

OSPMs are encouraged to use acpi_os_trace_point() with
ACPI_USE_SYSTEM_TRACER defined to implement platform specific trace
facility. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/e8e4a9b1
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acinterp.h |   4 ++
 drivers/acpi/acpica/exdebug.c  | 125 +++++++++++++++++++++++----------
 drivers/acpi/acpica/utdebug.c  |  31 +++++++-
 include/acpi/acoutput.h        |   3 +
 include/acpi/acpiosxf.h        |   6 ++
 include/acpi/acpixf.h          |   5 ++
 include/acpi/actypes.h         |   8 +++
 7 files changed, 144 insertions(+), 38 deletions(-)

diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h
index a3c6e2ab93bb4..e820ed8f173f0 100644
--- a/drivers/acpi/acpica/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
@@ -149,6 +149,10 @@ void
 acpi_ex_stop_trace_opcode(union acpi_parse_object *op,
 			  struct acpi_walk_state *walk_state);
 
+void
+acpi_ex_trace_point(acpi_trace_event_type type,
+		    u8 begin, u8 *aml, char *pathname);
+
 /*
  * exfield - ACPI AML (p-code) execution - field manipulation
  */
diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c
index 00ba9fc85f473..708b2aed0145a 100644
--- a/drivers/acpi/acpica/exdebug.c
+++ b/drivers/acpi/acpica/exdebug.c
@@ -52,6 +52,12 @@ ACPI_MODULE_NAME("exdebug")
 
 static union acpi_operand_object *acpi_gbl_trace_method_object = NULL;
 
+/* Local prototypes */
+
+#ifdef ACPI_DEBUG_OUTPUT
+static const char *acpi_ex_get_trace_event_name(acpi_trace_event_type type);
+#endif
+
 #ifndef ACPI_NO_ERROR_MESSAGES
 /*******************************************************************************
  *
@@ -363,6 +369,78 @@ static u8 acpi_ex_interpreter_trace_enabled(char *name)
 	return (TRUE);
 }
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_get_trace_event_name
+ *
+ * PARAMETERS:  type            - Trace event type
+ *
+ * RETURN:      Trace event name.
+ *
+ * DESCRIPTION: Used to obtain the full trace event name.
+ *
+ ******************************************************************************/
+
+#ifdef ACPI_DEBUG_OUTPUT
+
+static const char *acpi_ex_get_trace_event_name(acpi_trace_event_type type)
+{
+	switch (type) {
+	case ACPI_TRACE_AML_METHOD:
+
+		return "Method";
+
+	case ACPI_TRACE_AML_OPCODE:
+
+		return "Opcode";
+
+	case ACPI_TRACE_AML_REGION:
+
+		return "Region";
+
+	default:
+
+		return "";
+	}
+}
+
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_trace_point
+ *
+ * PARAMETERS:  type                - Trace event type
+ *              begin               - TRUE if before execution
+ *              aml                 - Executed AML address
+ *              pathname            - Object path
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Internal interpreter execution trace.
+ *
+ ******************************************************************************/
+
+void
+acpi_ex_trace_point(acpi_trace_event_type type,
+		    u8 begin, u8 *aml, char *pathname)
+{
+
+	ACPI_FUNCTION_NAME(ex_trace_point);
+
+	if (pathname) {
+		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+				  "%s %s [0x%p:%s] execution.\n",
+				  acpi_ex_get_trace_event_name(type),
+				  begin ? "Begin" : "End", aml, pathname));
+	} else {
+		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
+				  "%s %s [0x%p] execution.\n",
+				  acpi_ex_get_trace_event_name(type),
+				  begin ? "Begin" : "End", aml));
+	}
+}
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ex_start_trace_method
@@ -417,16 +495,9 @@ acpi_ex_start_trace_method(struct acpi_namespace_node *method_node,
 
 exit:
 	if (enabled) {
-		if (pathname) {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "Begin method [0x%p:%s] execution.\n",
-					  obj_desc->method.aml_start,
-					  pathname));
-		} else {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "Begin method [0x%p] execution.\n",
-					  obj_desc->method.aml_start));
-		}
+		ACPI_TRACE_POINT(ACPI_TRACE_AML_METHOD, TRUE,
+				 obj_desc ? obj_desc->method.aml_start : NULL,
+				 pathname);
 	}
 	if (pathname) {
 		ACPI_FREE(pathname);
@@ -473,16 +544,9 @@ acpi_ex_stop_trace_method(struct acpi_namespace_node *method_node,
 	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 
 	if (enabled) {
-		if (pathname) {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "End method [0x%p:%s] execution.\n",
-					  obj_desc->method.aml_start,
-					  pathname));
-		} else {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "End method [0x%p] execution.\n",
-					  obj_desc->method.aml_start));
-		}
+		ACPI_TRACE_POINT(ACPI_TRACE_AML_METHOD, FALSE,
+				 obj_desc ? obj_desc->method.aml_start : NULL,
+				 pathname);
 	}
 
 	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
@@ -535,20 +599,8 @@ acpi_ex_start_trace_opcode(union acpi_parse_object *op,
 	ACPI_FUNCTION_NAME(ex_start_trace_opcode);
 
 	if (acpi_ex_interpreter_trace_enabled(NULL)) {
-		if (walk_state->op_info) {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "Begin opcode: %s[0x%p] Class=0x%02x, Type=0x%02x, Flags=0x%04x.\n",
-					  op->common.aml_op_name,
-					  op->common.aml,
-					  walk_state->op_info->class,
-					  walk_state->op_info->type,
-					  walk_state->op_info->flags));
-		} else {
-			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-					  "Begin opcode: %s[0x%p].\n",
-					  op->common.aml_op_name,
-					  op->common.aml));
-		}
+		ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, TRUE,
+				 op->common.aml, op->common.aml_op_name);
 	}
 }
 
@@ -574,8 +626,7 @@ acpi_ex_stop_trace_opcode(union acpi_parse_object *op,
 	ACPI_FUNCTION_NAME(ex_stop_trace_opcode);
 
 	if (acpi_ex_interpreter_trace_enabled(NULL)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
-				  "End opcode: %s[0x%p].\n",
-				  op->common.aml_op_name, op->common.aml));
+		ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, FALSE,
+				 op->common.aml, op->common.aml_op_name);
 	}
 }
diff --git a/drivers/acpi/acpica/utdebug.c b/drivers/acpi/acpica/utdebug.c
index cd02693841db0..4146229103c82 100644
--- a/drivers/acpi/acpica/utdebug.c
+++ b/drivers/acpi/acpica/utdebug.c
@@ -45,6 +45,7 @@
 
 #include <acpi/acpi.h>
 #include "accommon.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utdebug")
@@ -560,8 +561,37 @@ acpi_ut_ptr_exit(u32 line_number,
 	}
 }
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_trace_point
+ *
+ * PARAMETERS:  type                - Trace event type
+ *              begin               - TRUE if before execution
+ *              aml                 - Executed AML address
+ *              pathname            - Object path
+ *              pointer             - Pointer to the related object
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Interpreter execution trace.
+ *
+ ******************************************************************************/
+
+void
+acpi_trace_point(acpi_trace_event_type type, u8 begin, u8 *aml, char *pathname)
+{
+
+	ACPI_FUNCTION_ENTRY();
+
+	acpi_ex_trace_point(type, begin, aml, pathname);
+
+#ifdef ACPI_USE_SYSTEM_TRACER
+	acpi_os_trace_point(type, begin, aml, pathname);
 #endif
+}
 
+ACPI_EXPORT_SYMBOL(acpi_trace_point)
+#endif
 #ifdef ACPI_APPLICATION
 /*******************************************************************************
  *
@@ -575,7 +605,6 @@ acpi_ut_ptr_exit(u32 line_number,
  * DESCRIPTION: Print error message to the console, used by applications.
  *
  ******************************************************************************/
-
 void ACPI_INTERNAL_VAR_XFACE acpi_log_error(const char *format, ...)
 {
 	va_list args;
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index 37f46d49a74a6..c3f0ac135f682 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -447,6 +447,8 @@
 #define ACPI_DUMP_PATHNAME(a, b, c, d)  acpi_ns_dump_pathname(a, b, c, d)
 #define ACPI_DUMP_BUFFER(a, b)          acpi_ut_debug_dump_buffer((u8 *) a, b, DB_BYTE_DISPLAY, _COMPONENT)
 
+#define ACPI_TRACE_POINT(a, b, c, d)    acpi_trace_point (a, b, c, d)
+
 #else				/* ACPI_DEBUG_OUTPUT */
 /*
  * This is the non-debug case -- make everything go away,
@@ -468,6 +470,7 @@
 #define ACPI_DUMP_PATHNAME(a, b, c, d)
 #define ACPI_DUMP_BUFFER(a, b)
 #define ACPI_IS_DEBUG_ENABLED(level, component) 0
+#define ACPI_TRACE_POINT(a, b, c, d)
 
 /* Return macros must have a return statement at the minimum */
 
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index d02df0a49d980..a54ad1cc990c6 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -430,4 +430,10 @@ long acpi_os_get_file_offset(ACPI_FILE file);
 acpi_status acpi_os_set_file_offset(ACPI_FILE file, long offset, u8 from);
 #endif
 
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_trace_point
+void
+acpi_os_trace_point(acpi_trace_event_type type,
+		    u8 begin, u8 *aml, char *pathname);
+#endif
+
 #endif				/* __ACPIOSXF_H__ */
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 9c362cf142641..9aa27a3e3716d 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -909,6 +909,11 @@ ACPI_DBG_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(6)
 						     const char *module_name,
 						     u32 component_id,
 						     const char *format, ...))
+
+ACPI_DBG_DEPENDENT_RETURN_VOID(void
+			       acpi_trace_point(acpi_trace_event_type type,
+						u8 begin,
+						u8 *aml, char *pathname))
 ACPI_APP_DEPENDENT_RETURN_VOID(ACPI_PRINTF_LIKE(1)
 				void ACPI_INTERNAL_VAR_XFACE
 				acpi_log_error(const char *format, ...))
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 0f3913f9a377a..531eca49edd43 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -1247,6 +1247,14 @@ struct acpi_memory_list {
 #endif
 };
 
+/* Definitions of trace event types */
+
+typedef enum {
+	ACPI_TRACE_AML_METHOD,
+	ACPI_TRACE_AML_OPCODE,
+	ACPI_TRACE_AML_REGION
+} acpi_trace_event_type;
+
 /* Definitions of _OSI support */
 
 #define ACPI_VENDOR_STRINGS                 0x01

From fb18e8fd08862f5509f3c79e168b24512c7065aa Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:53:15 +0800
Subject: [PATCH 11/22] ACPICA: Executer: Add option to bypass opcode tracing

ACPICA commit 61e9e20aadfaa03184d0959fbdc1fa5cdfea2551

This patch adds option to bypass opcode tracing. The option can be used to
reduce the trace message output. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/61e9e20a
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/exdebug.c | 6 ++++--
 include/acpi/acoutput.h       | 5 +++--
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c
index 708b2aed0145a..de92458236f56 100644
--- a/drivers/acpi/acpica/exdebug.c
+++ b/drivers/acpi/acpica/exdebug.c
@@ -598,7 +598,8 @@ acpi_ex_start_trace_opcode(union acpi_parse_object *op,
 
 	ACPI_FUNCTION_NAME(ex_start_trace_opcode);
 
-	if (acpi_ex_interpreter_trace_enabled(NULL)) {
+	if (acpi_ex_interpreter_trace_enabled(NULL) &&
+	    (acpi_gbl_trace_flags & ACPI_TRACE_OPCODE)) {
 		ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, TRUE,
 				 op->common.aml, op->common.aml_op_name);
 	}
@@ -625,7 +626,8 @@ acpi_ex_stop_trace_opcode(union acpi_parse_object *op,
 
 	ACPI_FUNCTION_NAME(ex_stop_trace_opcode);
 
-	if (acpi_ex_interpreter_trace_enabled(NULL)) {
+	if (acpi_ex_interpreter_trace_enabled(NULL) &&
+	    (acpi_gbl_trace_flags & ACPI_TRACE_OPCODE)) {
 		ACPI_TRACE_POINT(ACPI_TRACE_AML_OPCODE, FALSE,
 				 op->common.aml, op->common.aml_op_name);
 	}
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index c3f0ac135f682..908d4f9c348cc 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -187,8 +187,9 @@
 /*
  * Global trace flags
  */
-#define ACPI_TRACE_ENABLED          ((u32) 2)
-#define ACPI_TRACE_ONESHOT          ((u32) 1)
+#define ACPI_TRACE_ENABLED          ((u32) 4)
+#define ACPI_TRACE_ONESHOT          ((u32) 2)
+#define ACPI_TRACE_OPCODE           ((u32) 1)
 
 /* Defaults for trace debugging level/layer */
 

From ec4252a66b1a2cd2fc6fbdbf3d3279640500fb75 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:53:22 +0800
Subject: [PATCH 12/22] ACPICA: Parser: Remove redundant opcode execution
 debugging output

ACPICA commit c832b0a9263c560b3ae3ae31d7298ef33988f8d5

This patch removes one redundant debugging output of opcode execution which
has already been covered by acpi_ex_start_trace_opcode(). Lv Zheng.

Link: https://github.com/acpica/acpica/commit/c832b0a9
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/psloop.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index a7de52ee15383..6b11fd7a93dc2 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -491,14 +491,6 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
 				continue;
 			}
 
-			if (walk_state->op_info) {
-				ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
-						  "Opcode %4.4X [%s] Op %p Aml %p\n",
-						  (u32)op->common.aml_opcode,
-						  walk_state->op_info->name, op,
-						  op->common.aml));
-			}
-
 			acpi_ex_start_trace_opcode(op, walk_state);
 		}
 

From dc67d0fa8612ad49a8ec36040c5d22a9091bdbf6 Mon Sep 17 00:00:00 2001
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 23 Jul 2015 12:53:28 +0800
Subject: [PATCH 13/22] ACPICA: Remove extraneous check for null walk_state

ACPICA commit f9fd6e8bad0f16ce2b436c5cda36ced0c2d85302

Reported by Markus Elfring.

Link: https://github.com/acpica/acpica/commit/f9fd6e8b
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/dsmethod.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index ea2bdde1227ef..cb53c44c9644c 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -582,9 +582,7 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
 	/* On error, we must terminate the method properly */
 
 	acpi_ds_terminate_control_method(obj_desc, next_walk_state);
-	if (next_walk_state) {
-		acpi_ds_delete_walk_state(next_walk_state);
-	}
+	acpi_ds_delete_walk_state(next_walk_state);
 
 	return_ACPI_STATUS(status);
 }

From 53d9edce56de3eb495a3eef77e973e3ea014d999 Mon Sep 17 00:00:00 2001
From: Bob Moore <robert.moore@intel.com>
Date: Thu, 23 Jul 2015 12:53:35 +0800
Subject: [PATCH 14/22] ACPICA: iASL: Add new warnings for method local_x and
 arg_x variables

ACPICA commit eb9f8cb9fd65f1149dd335d05944c31cbca41af3

1) Warn if a Local is set but never used
2) Warn if a arg_x is never used (for non-predefined method names)
3) Warn if a arg_x that is used as a local is never used

This patch only affects iASL which is not in the kernel source tree.

Link: https://github.com/acpica/acpica/commit/eb9f8cb9
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/aclocal.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 610d001fbb31d..4758185b2b0ba 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -174,8 +174,12 @@ struct acpi_namespace_node {
 	 */
 #ifdef ACPI_LARGE_NAMESPACE_NODE
 	union acpi_parse_object *op;
+	void *method_locals;
+	void *method_args;
 	u32 value;
 	u32 length;
+	u8 arg_count;
+
 #endif
 };
 

From 5a4f0693a586d73a65ccc7959e81a5618de265fe Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:53:42 +0800
Subject: [PATCH 15/22] ACPICA: MSVC: Fix inclusion order issue of <crtdbg.h>

ACPICA commit 49c6a6517a906900e9baa51ad5859beeb8a3089f

The following error logs can be seen for calloc/free/malloc/realloc that
defined in the stdlib.h:
...\stdlib.h(281) : error C2059: syntax error : ','
...\stdlib.h(281) : error C2143: syntax error : missing ')' before 'constant'
...\stdlib.h(281) : error C2143: syntax error : missing '{' before 'constant'
...\stdlib.h(281) : error C2059: syntax error : '<Unknown>'
...\stdlib.h(281) : error C2059: syntax error : ')'

This is caused by the wrong inclusion order of stdlib.h/crtdbg.h introduced
in acenv.h. This patch fixes this breakage. Lv Zheng.

This patch doesn't affect Linux kernel.

Link: https://github.com/acpica/acpica/commit/49c6a651
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 include/acpi/platform/acenvex.h  |  3 ++
 include/acpi/platform/acmsvcex.h | 54 ++++++++++++++++++++++++++++++++
 include/acpi/platform/acwinex.h  | 49 +++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 include/acpi/platform/acmsvcex.h
 create mode 100644 include/acpi/platform/acwinex.h

diff --git a/include/acpi/platform/acenvex.h b/include/acpi/platform/acenvex.h
index 0a7dc8e583b1c..2f296cb5f7e2e 100644
--- a/include/acpi/platform/acenvex.h
+++ b/include/acpi/platform/acenvex.h
@@ -56,6 +56,9 @@
 #if defined(_LINUX) || defined(__linux__)
 #include <acpi/platform/aclinuxex.h>
 
+#elif defined(WIN32)
+#include "acwinex.h"
+
 #elif defined(_AED_EFI)
 #include "acefiex.h"
 
diff --git a/include/acpi/platform/acmsvcex.h b/include/acpi/platform/acmsvcex.h
new file mode 100644
index 0000000000000..b64797488775b
--- /dev/null
+++ b/include/acpi/platform/acmsvcex.h
@@ -0,0 +1,54 @@
+/******************************************************************************
+ *
+ * Name: acmsvcex.h - Extra VC specific defines, etc.
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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.
+ */
+
+#ifndef __ACMSVCEX_H__
+#define __ACMSVCEX_H__
+
+/* Debug support. */
+
+#ifdef _DEBUG
+#define _CRTDBG_MAP_ALLOC	/* Enables specific file/lineno for leaks */
+#include <crtdbg.h>
+#endif
+
+#endif				/* __ACMSVCEX_H__ */
diff --git a/include/acpi/platform/acwinex.h b/include/acpi/platform/acwinex.h
new file mode 100644
index 0000000000000..6ed1d713509b3
--- /dev/null
+++ b/include/acpi/platform/acwinex.h
@@ -0,0 +1,49 @@
+/******************************************************************************
+ *
+ * Name: acwinex.h - Extra OS specific defines, etc.
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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.
+ */
+
+#ifndef __ACWINEX_H__
+#define __ACWINEX_H__
+
+/* Windows uses VC */
+
+#endif				/* __ACWINEX_H__ */

From 276291962ebf43abebb491ddcd922009de9fde4b Mon Sep 17 00:00:00 2001
From: Bob Moore <robert.moore@intel.com>
Date: Thu, 23 Jul 2015 12:53:49 +0800
Subject: [PATCH 16/22] ACPICA: Cleanup use of all non-ANSI local C library
 functions

ACPICA commit 7c490c28a18b435c543c6b410e7e7c2131fccc78

ACPICA implements all non-ANSI functions locally. However, there
are sometimes two or more versions of the same function throughout
the ACPICA code. This change fixes this.

Adds a new file, utilities/utnonansi.c

Link: https://github.com/acpica/acpica/commit/7c490c28
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/Makefile    |   1 +
 drivers/acpi/acpica/acmacros.h  |   4 +
 drivers/acpi/acpica/acutils.h   |  23 +-
 drivers/acpi/acpica/utnonansi.c | 380 ++++++++++++++++++++++++++++++++
 drivers/acpi/acpica/utstring.c  | 342 ----------------------------
 5 files changed, 396 insertions(+), 354 deletions(-)
 create mode 100644 drivers/acpi/acpica/utnonansi.c

diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index 9f30ed7b1a07c..fedcc16b56cc5 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -165,6 +165,7 @@ acpi-y +=		\
 	utmath.o	\
 	utmisc.o	\
 	utmutex.o	\
+	utnonansi.o	\
 	utobject.o	\
 	utosi.o		\
 	utownerid.o	\
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h
index c240bdf824f26..19d40c6c1f326 100644
--- a/drivers/acpi/acpica/acmacros.h
+++ b/drivers/acpi/acpica/acmacros.h
@@ -220,6 +220,10 @@
 #define ACPI_MUL_32(a)                  _ACPI_MUL(a, 5)
 #define ACPI_MOD_32(a)                  _ACPI_MOD(a, 32)
 
+/* Test for ASCII character */
+
+#define ACPI_IS_ASCII(c)                ((c) < 0x80)
+
 /*
  * Rounding macros (Power of two boundaries only)
  */
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 6de0d3573037a..566ff4df02fd4 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -166,6 +166,17 @@ struct acpi_pkg_info {
 #define DB_DWORD_DISPLAY    4
 #define DB_QWORD_DISPLAY    8
 
+/*
+ * utnonansi - Non-ANSI C library functions
+ */
+void acpi_ut_strupr(char *src_string);
+
+void acpi_ut_strlwr(char *src_string);
+
+int acpi_ut_stricmp(char *string1, char *string2);
+
+acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer);
+
 /*
  * utglobal - Global data structures and procedures
  */
@@ -205,8 +216,6 @@ acpi_status acpi_ut_hardware_initialize(void);
 
 void acpi_ut_subsystem_shutdown(void);
 
-#define ACPI_IS_ASCII(c)  ((c) < 0x80)
-
 /*
  * utcopy - Object construction and conversion interfaces
  */
@@ -567,16 +576,6 @@ acpi_ut_get_resource_end_tag(union acpi_operand_object *obj_desc, u8 **end_tag);
 /*
  * utstring - String and character utilities
  */
-void acpi_ut_strupr(char *src_string);
-
-#ifdef ACPI_ASL_COMPILER
-void acpi_ut_strlwr(char *src_string);
-
-int acpi_ut_stricmp(char *string1, char *string2);
-#endif
-
-acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer);
-
 void acpi_ut_print_string(char *string, u16 max_length);
 
 #if defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP
diff --git a/drivers/acpi/acpica/utnonansi.c b/drivers/acpi/acpica/utnonansi.c
new file mode 100644
index 0000000000000..1d5f6b17b7664
--- /dev/null
+++ b/drivers/acpi/acpica/utnonansi.c
@@ -0,0 +1,380 @@
+/*******************************************************************************
+ *
+ * Module Name: utnonansi - Non-ansi C library functions
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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 "accommon.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utnonansi")
+
+/*
+ * Non-ANSI C library functions - strlwr, strupr, stricmp, and a 64-bit
+ * version of strtoul.
+ */
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_strlwr (strlwr)
+ *
+ * PARAMETERS:  src_string      - The source string to convert
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Convert a string to lowercase
+ *
+ ******************************************************************************/
+void acpi_ut_strlwr(char *src_string)
+{
+	char *string;
+
+	ACPI_FUNCTION_ENTRY();
+
+	if (!src_string) {
+		return;
+	}
+
+	/* Walk entire string, lowercasing the letters */
+
+	for (string = src_string; *string; string++) {
+		*string = (char)tolower((int)*string);
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_strupr (strupr)
+ *
+ * PARAMETERS:  src_string      - The source string to convert
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Convert a string to uppercase
+ *
+ ******************************************************************************/
+
+void acpi_ut_strupr(char *src_string)
+{
+	char *string;
+
+	ACPI_FUNCTION_ENTRY();
+
+	if (!src_string) {
+		return;
+	}
+
+	/* Walk entire string, uppercasing the letters */
+
+	for (string = src_string; *string; string++) {
+		*string = (char)toupper((int)*string);
+	}
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_stricmp (stricmp)
+ *
+ * PARAMETERS:  string1             - first string to compare
+ *              string2             - second string to compare
+ *
+ * RETURN:      int that signifies string relationship. Zero means strings
+ *              are equal.
+ *
+ * DESCRIPTION: Case-insensitive string compare. Implementation of the
+ *              non-ANSI stricmp function.
+ *
+ ******************************************************************************/
+
+int acpi_ut_stricmp(char *string1, char *string2)
+{
+	int c1;
+	int c2;
+
+	do {
+		c1 = tolower((int)*string1);
+		c2 = tolower((int)*string2);
+
+		string1++;
+		string2++;
+	}
+	while ((c1 == c2) && (c1));
+
+	return (c1 - c2);
+}
+
+/*******************************************************************************
+ *
+ * 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) && (isspace((int)*string) || *string == '\t')) {
+		string++;
+	}
+
+	if (to_integer_op) {
+		/*
+		 * Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
+		 * We need to determine if it is decimal or hexadecimal.
+		 */
+		if ((*string == '0') && (tolower((int)*(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) || isspace((int)*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 (isdigit((int)*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)toupper((int)*string);
+			if (isxdigit((int)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, &quotient, 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);
+	}
+}
+
+#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION)
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_safe_strcpy, acpi_ut_safe_strcat, acpi_ut_safe_strncat
+ *
+ * PARAMETERS:  Adds a "DestSize" parameter to each of the standard string
+ *              functions. This is the size of the Destination buffer.
+ *
+ * RETURN:      TRUE if the operation would overflow the destination buffer.
+ *
+ * DESCRIPTION: Safe versions of standard Clib string functions. Ensure that
+ *              the result of the operation will not overflow the output string
+ *              buffer.
+ *
+ * NOTE:        These functions are typically only helpful for processing
+ *              user input and command lines. For most ACPICA code, the
+ *              required buffer length is precisely calculated before buffer
+ *              allocation, so the use of these functions is unnecessary.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_safe_strcpy(char *dest, acpi_size dest_size, char *source)
+{
+
+	if (strlen(source) >= dest_size) {
+		return (TRUE);
+	}
+
+	strcpy(dest, source);
+	return (FALSE);
+}
+
+u8 acpi_ut_safe_strcat(char *dest, acpi_size dest_size, char *source)
+{
+
+	if ((strlen(dest) + strlen(source)) >= dest_size) {
+		return (TRUE);
+	}
+
+	strcat(dest, source);
+	return (FALSE);
+}
+
+u8
+acpi_ut_safe_strncat(char *dest,
+		     acpi_size dest_size,
+		     char *source, acpi_size max_transfer_length)
+{
+	acpi_size actual_transfer_length;
+
+	actual_transfer_length = ACPI_MIN(max_transfer_length, strlen(source));
+
+	if ((strlen(dest) + actual_transfer_length) >= dest_size) {
+		return (TRUE);
+	}
+
+	strncat(dest, source, max_transfer_length);
+	return (FALSE);
+}
+#endif
diff --git a/drivers/acpi/acpica/utstring.c b/drivers/acpi/acpica/utstring.c
index 8f3c883dfe0ec..4ddd105d9741c 100644
--- a/drivers/acpi/acpica/utstring.c
+++ b/drivers/acpi/acpica/utstring.c
@@ -48,286 +48,6 @@
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utstring")
 
-/*
- * Non-ANSI C library functions - strlwr, strupr, stricmp, and a 64-bit
- * version of strtoul.
- */
-#ifdef ACPI_ASL_COMPILER
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ut_strlwr (strlwr)
- *
- * PARAMETERS:  src_string      - The source string to convert
- *
- * RETURN:      None
- *
- * DESCRIPTION: Convert string to lowercase
- *
- * NOTE: This is not a POSIX function, so it appears here, not in utclib.c
- *
- ******************************************************************************/
-void acpi_ut_strlwr(char *src_string)
-{
-	char *string;
-
-	ACPI_FUNCTION_ENTRY();
-
-	if (!src_string) {
-		return;
-	}
-
-	/* Walk entire string, lowercasing the letters */
-
-	for (string = src_string; *string; string++) {
-		*string = (char)tolower((int)*string);
-	}
-
-	return;
-}
-
-/******************************************************************************
- *
- * FUNCTION:    acpi_ut_stricmp (stricmp)
- *
- * PARAMETERS:  string1             - first string to compare
- *              string2             - second string to compare
- *
- * RETURN:      int that signifies string relationship. Zero means strings
- *              are equal.
- *
- * DESCRIPTION: Implementation of the non-ANSI stricmp function (compare
- *              strings with no case sensitivity)
- *
- ******************************************************************************/
-
-int acpi_ut_stricmp(char *string1, char *string2)
-{
-	int c1;
-	int c2;
-
-	do {
-		c1 = tolower((int)*string1);
-		c2 = tolower((int)*string2);
-
-		string1++;
-		string2++;
-	}
-	while ((c1 == c2) && (c1));
-
-	return (c1 - c2);
-}
-#endif
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ut_strupr (strupr)
- *
- * PARAMETERS:  src_string      - The source string to convert
- *
- * RETURN:      None
- *
- * DESCRIPTION: Convert string to uppercase
- *
- * NOTE: This is not a POSIX function, so it appears here, not in utclib.c
- *
- ******************************************************************************/
-
-void acpi_ut_strupr(char *src_string)
-{
-	char *string;
-
-	ACPI_FUNCTION_ENTRY();
-
-	if (!src_string) {
-		return;
-	}
-
-	/* Walk entire string, uppercasing the letters */
-
-	for (string = src_string; *string; string++) {
-		*string = (char)toupper((int)*string);
-	}
-
-	return;
-}
-
-/*******************************************************************************
- *
- * 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) && (isspace((int)*string) || *string == '\t')) {
-		string++;
-	}
-
-	if (to_integer_op) {
-		/*
-		 * Base equal to ACPI_ANY_BASE means 'ToInteger operation case'.
-		 * We need to determine if it is decimal or hexadecimal.
-		 */
-		if ((*string == '0') && (tolower((int)*(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) || isspace((int)*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 (isdigit((int)*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)toupper((int)*string);
-			if (isxdigit((int)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, &quotient, 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_print_string
@@ -342,7 +62,6 @@ acpi_status acpi_ut_strtoul64(char *string, u32 base, u64 *ret_integer)
  *              sequences.
  *
  ******************************************************************************/
-
 void acpi_ut_print_string(char *string, u16 max_length)
 {
 	u32 i;
@@ -584,64 +303,3 @@ void ut_convert_backslashes(char *pathname)
 	}
 }
 #endif
-
-#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION)
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ut_safe_strcpy, acpi_ut_safe_strcat, acpi_ut_safe_strncat
- *
- * PARAMETERS:  Adds a "DestSize" parameter to each of the standard string
- *              functions. This is the size of the Destination buffer.
- *
- * RETURN:      TRUE if the operation would overflow the destination buffer.
- *
- * DESCRIPTION: Safe versions of standard Clib string functions. Ensure that
- *              the result of the operation will not overflow the output string
- *              buffer.
- *
- * NOTE:        These functions are typically only helpful for processing
- *              user input and command lines. For most ACPICA code, the
- *              required buffer length is precisely calculated before buffer
- *              allocation, so the use of these functions is unnecessary.
- *
- ******************************************************************************/
-
-u8 acpi_ut_safe_strcpy(char *dest, acpi_size dest_size, char *source)
-{
-
-	if (strlen(source) >= dest_size) {
-		return (TRUE);
-	}
-
-	strcpy(dest, source);
-	return (FALSE);
-}
-
-u8 acpi_ut_safe_strcat(char *dest, acpi_size dest_size, char *source)
-{
-
-	if ((strlen(dest) + strlen(source)) >= dest_size) {
-		return (TRUE);
-	}
-
-	strcat(dest, source);
-	return (FALSE);
-}
-
-u8
-acpi_ut_safe_strncat(char *dest,
-		     acpi_size dest_size,
-		     char *source, acpi_size max_transfer_length)
-{
-	acpi_size actual_transfer_length;
-
-	actual_transfer_length = ACPI_MIN(max_transfer_length, strlen(source));
-
-	if ((strlen(dest) + actual_transfer_length) >= dest_size) {
-		return (TRUE);
-	}
-
-	strncat(dest, source, max_transfer_length);
-	return (FALSE);
-}
-#endif

From 88606a2b9020993a776df894941b3b07cc1374fe Mon Sep 17 00:00:00 2001
From: Bob Moore <robert.moore@intel.com>
Date: Thu, 23 Jul 2015 12:53:57 +0800
Subject: [PATCH 17/22] ACPICA: Cleanup use of NEGATIVE and POSITIVE defines

ACPICA commit f88814201e01043a4f8caa69a69b799af11c44a3

These were defined in two places. Changed to ACPI_SIGN* names
and define them once in acmacros.h

This patch doesn't affect Linux kernel.

Link: https://github.com/acpica/acpica/commit/f8881420
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acmacros.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h
index 19d40c6c1f326..e85366ceb15a2 100644
--- a/drivers/acpi/acpica/acmacros.h
+++ b/drivers/acpi/acpica/acmacros.h
@@ -224,6 +224,11 @@
 
 #define ACPI_IS_ASCII(c)                ((c) < 0x80)
 
+/* Signed integers */
+
+#define ACPI_SIGN_POSITIVE              0
+#define ACPI_SIGN_NEGATIVE              1
+
 /*
  * Rounding macros (Power of two boundaries only)
  */

From 15a61aa19dad8dedb137c216c13ba18ad6f59674 Mon Sep 17 00:00:00 2001
From: Bob Moore <robert.moore@intel.com>
Date: Thu, 23 Jul 2015 12:54:04 +0800
Subject: [PATCH 18/22] ACPICA: iASL: Add support for TCPA Server Table

ACPICA commit 55fa9555c71eaa99daebed4cd82cfde3875e8c45

In addition to the existing support for the client table.

Link: https://github.com/acpica/acpica/commit/55fa9555
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 include/acpi/actbl2.h | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index a948fc586b9b8..6e28f544b7b23 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1186,20 +1186,29 @@ enum acpi_spmi_interface_types {
  * December 19, 2014
  *
  * NOTE: There are two versions of the table with the same signature --
- * the client version and the server version.
+ * the client version and the server version. The common platform_class
+ * field is used to differentiate the two types of tables.
  *
  ******************************************************************************/
 
-struct acpi_table_tcpa_client {
+struct acpi_table_tcpa_hdr {
 	struct acpi_table_header header;	/* Common ACPI table header */
 	u16 platform_class;
+};
+
+/*
+ * Values for platform_class above.
+ * This is how the client and server subtables are differentiated
+ */
+#define ACPI_TCPA_CLIENT_TABLE          0
+#define ACPI_TCPA_SERVER_TABLE          1
+
+struct acpi_table_tcpa_client {
 	u32 minimum_log_length;	/* Minimum length for the event log area */
 	u64 log_address;	/* Address of the event log area */
 };
 
 struct acpi_table_tcpa_server {
-	struct acpi_table_header header;	/* Common ACPI table header */
-	u16 platform_class;
 	u16 reserved;
 	u64 minimum_log_length;	/* Minimum length for the event log area */
 	u64 log_address;	/* Address of the event log area */

From 02ca26bef8f49a654026f56bedde2ab25e761380 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:54:11 +0800
Subject: [PATCH 19/22] ACPICA: Debugger: Reduce structure size for debugger

ACPICA commit 310e0ae1c4730f4dadc80125125099ab76851499

arg_types in struct acpi_db_method_info is only referenced by ACPI_DEBUGGER.

This patch only affects ACPICA debugger which is only used by a non-kernel
tool - acpiexec, so Linux kernel is currently not affected by this patch.

Link: https://github.com/acpica/acpica/commit/310e0ae1
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/aclocal.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 4758185b2b0ba..a6b68878cdbe1 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -1107,6 +1107,9 @@ struct acpi_db_method_info {
 	 *   Index of current thread inside all them created.
 	 */
 	char init_args;
+#ifdef ACPI_DEBUGGER
+	acpi_object_type arg_types[4];
+#endif
 	char *arguments[4];
 	char num_threads_str[11];
 	char id_of_thread_str[11];

From fdd8d831cf43761712d28e5d1ad812eab7dc1480 Mon Sep 17 00:00:00 2001
From: Lv Zheng <lv.zheng@intel.com>
Date: Thu, 23 Jul 2015 12:54:17 +0800
Subject: [PATCH 20/22] ACPICA: Debugger: Move debugger specific APIs to
 debugger component

ACPICA commit 2164923d60429eea7cd5a4a8629b607af7325afa

Some disassembler APIs should rather be debugger APIs. This patch moves
them to the debugger folder to be ready for debugger porting.

Since there is no in-kernel ACPICA debugger in the kernel source tree, this
patch doesn't affect the Linux kernel.

Link: https://github.com/acpica/acpica/commit/2164923d
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acdebug.h  | 17 +++++++++++++++++
 drivers/acpi/acpica/dsmethod.c | 12 +++++-------
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h
index 88482f75e9415..b5a9c5126209c 100644
--- a/drivers/acpi/acpica/acdebug.h
+++ b/drivers/acpi/acpica/acdebug.h
@@ -263,6 +263,23 @@ acpi_status acpi_db_user_commands(char prompt, union acpi_parse_object *op);
 char *acpi_db_get_next_token(char *string,
 			     char **next, acpi_object_type * return_type);
 
+/*
+ * dbobject
+ */
+void acpi_db_decode_internal_object(union acpi_operand_object *obj_desc);
+
+void
+acpi_db_display_internal_object(union acpi_operand_object *obj_desc,
+				struct acpi_walk_state *walk_state);
+
+void acpi_db_decode_arguments(struct acpi_walk_state *walk_state);
+
+void acpi_db_decode_locals(struct acpi_walk_state *walk_state);
+
+void
+acpi_db_dump_method_info(acpi_status status,
+			 struct acpi_walk_state *walk_state);
+
 /*
  * dbstats - Generation and display of ACPI table statistics
  */
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index cb53c44c9644c..bc32f3194afe1 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -46,11 +46,9 @@
 #include "acdispat.h"
 #include "acinterp.h"
 #include "acnamesp.h"
-#ifdef	ACPI_DISASSEMBLER
-#include "acdisasm.h"
-#endif
 #include "acparser.h"
 #include "amlcode.h"
+#include "acdebug.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsmethod")
@@ -205,7 +203,7 @@ acpi_ds_detect_named_opcodes(struct acpi_walk_state *walk_state,
  * RETURN:      Status
  *
  * DESCRIPTION: Called on method error. Invoke the global exception handler if
- *              present, dump the method data if the disassembler is configured
+ *              present, dump the method data if the debugger is configured
  *
  *              Note: Allows the exception handler to change the status code
  *
@@ -254,10 +252,10 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state * walk_state)
 	if (ACPI_FAILURE(status)) {
 		acpi_ds_dump_method_stack(status, walk_state, walk_state->op);
 
-		/* Display method locals/args if disassembler is present */
+		/* Display method locals/args if debugger is present */
 
-#ifdef ACPI_DISASSEMBLER
-		acpi_dm_dump_method_info(status, walk_state);
+#ifdef ACPI_DEBUGGER
+		acpi_db_dump_method_info(status, walk_state);
 #endif
 	}
 

From 6d9be0a5c459ac30a5b3e7fbe51c55f65a5f4c7c Mon Sep 17 00:00:00 2001
From: Bob Moore <robert.moore@intel.com>
Date: Thu, 23 Jul 2015 12:54:23 +0800
Subject: [PATCH 21/22] ACPICA: iASL/Disassembler: Add prototype verbose mode

ACPICA commit add72dca18ab5d02f1bf9b08027570e58da520e8

This mode will emit AML byte code after each ASL statement.
This is a prototype only and requires additional development.

This patch only affects ACPICA disassembler which is not in the kernel
source tree.

Link: https://github.com/acpica/acpica/commit/add72dca
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/acpi/acpica/acglobal.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 5342300719ee7..79eb35d080a02 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -307,6 +307,7 @@ ACPI_INIT_GLOBAL(u8, acpi_gbl_no_resource_disassembly, FALSE);
 ACPI_INIT_GLOBAL(u8, acpi_gbl_ignore_noop_operator, FALSE);
 ACPI_INIT_GLOBAL(u8, acpi_gbl_cstyle_disassembly, TRUE);
 ACPI_INIT_GLOBAL(u8, acpi_gbl_force_aml_disassembly, FALSE);
+ACPI_INIT_GLOBAL(union acpi_parse_object *, acpi_gbl_previous_op, NULL);
 
 ACPI_GLOBAL(u8, acpi_gbl_db_opt_disasm);
 ACPI_GLOBAL(u8, acpi_gbl_db_opt_verbose);

From 40913fe6ea3b733564f0b580cf6c51f5d8fa8158 Mon Sep 17 00:00:00 2001
From: Bob Moore <robert.moore@intel.com>
Date: Thu, 23 Jul 2015 12:54:30 +0800
Subject: [PATCH 22/22] ACPICA: Update version to 20150717

ACPICA commit 8580ce04c1b7aa415c364b06e79edb8aca77dded

Version 20150717.

Link: https://github.com/acpica/acpica/commit/8580ce04
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 include/acpi/acpixf.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 9aa27a3e3716d..f2e232717770a 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -46,7 +46,7 @@
 
 /* Current ACPICA subsystem version in YYYYMMDD format */
 
-#define ACPI_CA_VERSION                 0x20150619
+#define ACPI_CA_VERSION                 0x20150717
 
 #include <acpi/acconfig.h>
 #include <acpi/actypes.h>