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Subject[PATCH 12/50] ACPI 5.0: Implement Connection() and AccessAs() changes
Date
From: Bob Moore <robert.moore@intel.com>

Support within the interpreter and operation region dispatch.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
drivers/acpi/acpica/acevents.h | 1 +
drivers/acpi/acpica/aclocal.h | 6 ++-
drivers/acpi/acpica/acobject.h | 5 +-
drivers/acpi/acpica/acopcode.h | 4 +
drivers/acpi/acpica/amlcode.h | 10 +++
drivers/acpi/acpica/dsfield.c | 81 +++++++++++++++++++----
drivers/acpi/acpica/evregion.c | 29 +++++++-
drivers/acpi/acpica/exconfig.c | 6 +-
drivers/acpi/acpica/exdump.c | 7 ++-
drivers/acpi/acpica/exfldio.c | 11 ++--
drivers/acpi/acpica/exprep.c | 25 +++++++
drivers/acpi/acpica/psargs.c | 141 ++++++++++++++++++++++++++++++++++++----
drivers/acpi/acpica/psopcode.c | 13 +++-
drivers/acpi/acpica/pstree.c | 6 ++
include/acpi/actypes.h | 8 ++
15 files changed, 308 insertions(+), 45 deletions(-)
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index bea3b48..f763b88 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -162,6 +162,7 @@ acpi_status acpi_ev_initialize_op_regions(void);

acpi_status
acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
+ union acpi_operand_object *field_obj,
u32 function,
u32 region_offset, u32 bit_width, u64 *value);

diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 5552125..52c4ebd 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -53,7 +53,7 @@ typedef u32 acpi_mutex_handle;

/* Total number of aml opcodes defined */

-#define AML_NUM_OPCODES 0x7F
+#define AML_NUM_OPCODES 0x81

/* Forward declarations */

@@ -249,12 +249,16 @@ struct acpi_create_field_info {
struct acpi_namespace_node *field_node;
struct acpi_namespace_node *register_node;
struct acpi_namespace_node *data_register_node;
+ struct acpi_namespace_node *connection_node;
+ u8 *resource_buffer;
u32 bank_value;
u32 field_bit_position;
u32 field_bit_length;
+ u16 resource_length;
u8 field_flags;
u8 attribute;
u8 field_type;
+ u8 access_length;
};

typedef
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index 6d276c2..435dd2f 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -254,6 +254,7 @@ ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_NOTIFY_INFO};
u32 base_byte_offset; /* Byte offset within containing object */\
u32 value; /* Value to store into the Bank or Index register */\
u8 start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
+ u8 access_length; /* For serial regions/fields */


struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and INDEX fields) */
@@ -261,7 +262,9 @@ struct acpi_object_field_common { /* COMMON FIELD (for BUFFER, REGION, BANK, and
};

struct acpi_object_region_field {
- ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *region_obj; /* Containing op_region object */
+ ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO u16 resource_length;
+ union acpi_operand_object *region_obj; /* Containing op_region object */
+ u8 *resource_buffer; /* resource_template for serial regions/fields */
};

struct acpi_object_bank_field {
diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h
index bb2ccfa..9896c77 100644
--- a/drivers/acpi/acpica/acopcode.h
+++ b/drivers/acpi/acpica/acopcode.h
@@ -93,6 +93,7 @@
#define ARGP_CONCAT_OP ARGP_LIST3 (ARGP_TERMARG, ARGP_TERMARG, ARGP_TARGET)
#define ARGP_CONCAT_RES_OP ARGP_LIST3 (ARGP_TERMARG, ARGP_TERMARG, ARGP_TARGET)
#define ARGP_COND_REF_OF_OP ARGP_LIST2 (ARGP_SUPERNAME, ARGP_SUPERNAME)
+#define ARGP_CONNECTFIELD_OP ARGP_LIST1 (ARGP_NAMESTRING)
#define ARGP_CONTINUE_OP ARG_NONE
#define ARGP_COPY_OP ARGP_LIST2 (ARGP_TERMARG, ARGP_SIMPLENAME)
#define ARGP_CREATE_BIT_FIELD_OP ARGP_LIST3 (ARGP_TERMARG, ARGP_TERMARG, ARGP_NAME)
@@ -164,6 +165,7 @@
#define ARGP_RETURN_OP ARGP_LIST1 (ARGP_TERMARG)
#define ARGP_REVISION_OP ARG_NONE
#define ARGP_SCOPE_OP ARGP_LIST3 (ARGP_PKGLENGTH, ARGP_NAME, ARGP_TERMLIST)
+#define ARGP_SERIALFIELD_OP ARGP_LIST1 (ARGP_NAMESTRING)
#define ARGP_SHIFT_LEFT_OP ARGP_LIST3 (ARGP_TERMARG, ARGP_TERMARG, ARGP_TARGET)
#define ARGP_SHIFT_RIGHT_OP ARGP_LIST3 (ARGP_TERMARG, ARGP_TERMARG, ARGP_TARGET)
#define ARGP_SIGNAL_OP ARGP_LIST1 (ARGP_SUPERNAME)
@@ -223,6 +225,7 @@
#define ARGI_CONCAT_OP ARGI_LIST3 (ARGI_COMPUTEDATA,ARGI_COMPUTEDATA, ARGI_TARGETREF)
#define ARGI_CONCAT_RES_OP ARGI_LIST3 (ARGI_BUFFER, ARGI_BUFFER, ARGI_TARGETREF)
#define ARGI_COND_REF_OF_OP ARGI_LIST2 (ARGI_OBJECT_REF, ARGI_TARGETREF)
+#define ARGI_CONNECTFIELD_OP ARGI_INVALID_OPCODE
#define ARGI_CONTINUE_OP ARGI_INVALID_OPCODE
#define ARGI_COPY_OP ARGI_LIST2 (ARGI_ANYTYPE, ARGI_SIMPLE_TARGET)
#define ARGI_CREATE_BIT_FIELD_OP ARGI_LIST3 (ARGI_BUFFER, ARGI_INTEGER, ARGI_REFERENCE)
@@ -294,6 +297,7 @@
#define ARGI_RETURN_OP ARGI_INVALID_OPCODE
#define ARGI_REVISION_OP ARG_NONE
#define ARGI_SCOPE_OP ARGI_INVALID_OPCODE
+#define ARGI_SERIALFIELD_OP ARGI_INVALID_OPCODE
#define ARGI_SHIFT_LEFT_OP ARGI_LIST3 (ARGI_INTEGER, ARGI_INTEGER, ARGI_TARGETREF)
#define ARGI_SHIFT_RIGHT_OP ARGI_LIST3 (ARGI_INTEGER, ARGI_INTEGER, ARGI_TARGETREF)
#define ARGI_SIGNAL_OP ARGI_LIST1 (ARGI_EVENT)
diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h
index 1077f17..adf7a71 100644
--- a/drivers/acpi/acpica/amlcode.h
+++ b/drivers/acpi/acpica/amlcode.h
@@ -189,6 +189,14 @@
#define AML_LNOTEQUAL_OP (u16) 0x9293

/*
+ * Opcodes for "Field" operators
+ */
+#define AML_FIELD_OFFSET_OP (u8) 0x00
+#define AML_FIELD_ACCESS_OP (u8) 0x01
+#define AML_FIELD_CONNECTION_OP (u8) 0x02 /* ACPI 5.0 */
+#define AML_FIELD_EXT_ACCESS_OP (u8) 0x03 /* ACPI 5.0 */
+
+/*
* Internal opcodes
* Use only "Unknown" AML opcodes, don't attempt to use
* any valid ACPI ASCII values (A-Z, 0-9, '-')
@@ -202,6 +210,8 @@
#define AML_INT_METHODCALL_OP (u16) 0x0035
#define AML_INT_RETURN_VALUE_OP (u16) 0x0036
#define AML_INT_EVAL_SUBTREE_OP (u16) 0x0037
+#define AML_INT_CONNECTION_OP (u16) 0x0038
+#define AML_INT_EXTACCESSFIELD_OP (u16) 0x0039

#define ARG_NONE 0x0

diff --git a/drivers/acpi/acpica/dsfield.c b/drivers/acpi/acpica/dsfield.c
index 34be60c..aa880d9 100644
--- a/drivers/acpi/acpica/dsfield.c
+++ b/drivers/acpi/acpica/dsfield.c
@@ -221,6 +221,7 @@ acpi_ds_get_field_names(struct acpi_create_field_info *info,
{
acpi_status status;
u64 position;
+ union acpi_parse_object *child;

ACPI_FUNCTION_TRACE_PTR(ds_get_field_names, info);

@@ -232,10 +233,11 @@ acpi_ds_get_field_names(struct acpi_create_field_info *info,

while (arg) {
/*
- * Three types of field elements are handled:
- * 1) Offset - specifies a bit offset
- * 2) access_as - changes the access mode
- * 3) Name - Enters a new named field into the namespace
+ * Four types of field elements are handled:
+ * 1) Name - Enters a new named field into the namespace
+ * 2) Offset - specifies a bit offset
+ * 3) access_as - changes the access mode/attributes
+ * 4) Connection - Associate a resource template with the field
*/
switch (arg->common.aml_opcode) {
case AML_INT_RESERVEDFIELD_OP:
@@ -253,21 +255,70 @@ acpi_ds_get_field_names(struct acpi_create_field_info *info,
break;

case AML_INT_ACCESSFIELD_OP:
-
+ case AML_INT_EXTACCESSFIELD_OP:
/*
- * Get a new access_type and access_attribute -- to be used for all
- * field units that follow, until field end or another access_as
- * keyword.
+ * Get new access_type, access_attribute, and access_length fields
+ * -- to be used for all field units that follow, until the
+ * end-of-field or another access_as keyword is encountered.
+ * NOTE. These three bytes are encoded in the integer value
+ * of the parseop for convenience.
*
* In field_flags, preserve the flag bits other than the
- * ACCESS_TYPE bits
+ * ACCESS_TYPE bits.
*/
+
+ /* access_type (byte_acc, word_acc, etc.) */
+
info->field_flags = (u8)
((info->
field_flags & ~(AML_FIELD_ACCESS_TYPE_MASK)) |
- ((u8) ((u32) arg->common.value.integer >> 8)));
+ ((u8)((u32)(arg->common.value.integer & 0x07))));
+
+ /* access_attribute (attrib_quick, attrib_byte, etc.) */
+
+ info->attribute =
+ (u8)((arg->common.value.integer >> 8) & 0xFF);
+
+ /* access_length (for serial/buffer protocols) */
+
+ info->access_length =
+ (u8)((arg->common.value.integer >> 16) & 0xFF);
+ break;
+
+ case AML_INT_CONNECTION_OP:
+ /*
+ * Clear any previous connection. New connection is used for all
+ * fields that follow, similar to access_as
+ */
+ info->resource_buffer = NULL;
+ info->connection_node = NULL;

- info->attribute = (u8) (arg->common.value.integer);
+ /*
+ * A Connection() is either an actual resource descriptor (buffer)
+ * or a named reference to a resource template
+ */
+ child = arg->common.value.arg;
+ if (child->common.aml_opcode == AML_INT_BYTELIST_OP) {
+ info->resource_buffer = child->named.data;
+ info->resource_length =
+ (u16)child->named.value.integer;
+ } else {
+ /* Lookup the Connection() namepath, it should already exist */
+
+ status = acpi_ns_lookup(walk_state->scope_info,
+ child->common.value.
+ name, ACPI_TYPE_ANY,
+ ACPI_IMODE_EXECUTE,
+ ACPI_NS_DONT_OPEN_SCOPE,
+ walk_state,
+ &info->connection_node);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR_NAMESPACE(child->common.
+ value.name,
+ status);
+ return_ACPI_STATUS(status);
+ }
+ }
break;

case AML_INT_NAMEDFIELD_OP:
@@ -374,6 +425,8 @@ acpi_ds_create_field(union acpi_parse_object *op,
}
}

+ ACPI_MEMSET(&info, 0, sizeof(struct acpi_create_field_info));
+
/* Second arg is the field flags */

arg = arg->common.next;
@@ -386,7 +439,6 @@ acpi_ds_create_field(union acpi_parse_object *op,
info.region_node = region_node;

status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
-
return_ACPI_STATUS(status);
}

@@ -474,8 +526,8 @@ acpi_ds_init_field_objects(union acpi_parse_object *op,
*/
while (arg) {
/*
- * Ignore OFFSET and ACCESSAS terms here; we are only interested in the
- * field names in order to enter them into the namespace.
+ * Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested
+ * in the field names in order to enter them into the namespace.
*/
if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
status = acpi_ns_lookup(walk_state->scope_info,
@@ -651,6 +703,5 @@ acpi_ds_create_index_field(union acpi_parse_object *op,
info.region_node = region_node;

status = acpi_ds_get_field_names(&info, walk_state, arg->common.next);
-
return_ACPI_STATUS(status);
}
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index f0edf5c..dcdc7e4 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -329,6 +329,7 @@ acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)
* FUNCTION: acpi_ev_address_space_dispatch
*
* PARAMETERS: region_obj - Internal region object
+ * field_obj - Corresponding field. Can be NULL.
* Function - Read or Write operation
* region_offset - Where in the region to read or write
* bit_width - Field width in bits (8, 16, 32, or 64)
@@ -344,6 +345,7 @@ acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function)

acpi_status
acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
+ union acpi_operand_object *field_obj,
u32 function,
u32 region_offset, u32 bit_width, u64 *value)
{
@@ -353,6 +355,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
union acpi_operand_object *handler_desc;
union acpi_operand_object *region_obj2;
void *region_context = NULL;
+ struct acpi_connection_info *context;

ACPI_FUNCTION_TRACE(ev_address_space_dispatch);

@@ -375,6 +378,8 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
return_ACPI_STATUS(AE_NOT_EXIST);
}

+ context = handler_desc->address_space.context;
+
/*
* It may be the case that the region has never been initialized.
* Some types of regions require special init code
@@ -404,8 +409,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
acpi_ex_exit_interpreter();

status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
- handler_desc->address_space.context,
- &region_context);
+ context, &region_context);

/* Re-enter the interpreter */

@@ -455,6 +459,25 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));

+ /*
+ * Special handling for generic_serial_bus and general_purpose_io:
+ * There are three extra parameters that must be passed to the
+ * handler via the context:
+ * 1) Connection buffer, a resource template from Connection() op.
+ * 2) Length of the above buffer.
+ * 3) Actual access length from the access_as() op.
+ */
+ if (((region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS) ||
+ (region_obj->region.space_id == ACPI_ADR_SPACE_GPIO)) &&
+ context && field_obj) {
+
+ /* Get the Connection (resource_template) buffer */
+
+ context->connection = field_obj->field.resource_buffer;
+ context->length = field_obj->field.resource_length;
+ context->access_length = field_obj->field.access_length;
+ }
+
if (!(handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
@@ -469,7 +492,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,

status = handler(function,
(region_obj->region.address + region_offset),
- bit_width, value, handler_desc->address_space.context,
+ bit_width, value, context,
region_obj2->extra.region_context);

if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 745a42b..efe41f7 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -297,9 +297,9 @@ acpi_ex_region_read(union acpi_operand_object *obj_desc, u32 length, u8 *buffer)
/* Bytewise reads */

for (i = 0; i < length; i++) {
- status = acpi_ev_address_space_dispatch(obj_desc, ACPI_READ,
- region_offset, 8,
- &value);
+ status =
+ acpi_ev_address_space_dispatch(obj_desc, NULL, ACPI_READ,
+ region_offset, 8, &value);
if (ACPI_FAILURE(status)) {
return status;
}
diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index 61b8c0e..c7064f4 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -192,10 +192,13 @@ static struct acpi_exdump_info acpi_ex_dump_buffer_field[3] = {
"Buffer Object"}
};

-static struct acpi_exdump_info acpi_ex_dump_region_field[3] = {
+static struct acpi_exdump_info acpi_ex_dump_region_field[5] = {
{ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_region_field), NULL},
{ACPI_EXD_FIELD, 0, NULL},
- {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(field.region_obj), "Region Object"}
+ {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(field.access_length), "AccessLength"},
+ {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(field.region_obj), "Region Object"},
+ {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(field.resource_buffer),
+ "ResourceBuffer"}
};

static struct acpi_exdump_info acpi_ex_dump_bank_field[5] = {
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index 2a524fc..cc9c5df 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -283,11 +283,12 @@ acpi_ex_access_region(union acpi_operand_object *obj_desc,

/* Invoke the appropriate address_space/op_region handler */

- status =
- acpi_ev_address_space_dispatch(rgn_desc, function, region_offset,
- ACPI_MUL_8(obj_desc->common_field.
- access_byte_width),
- value);
+ status = acpi_ev_address_space_dispatch(rgn_desc, obj_desc,
+ function, region_offset,
+ ACPI_MUL_8(obj_desc->
+ common_field.
+ access_byte_width),
+ value);

if (ACPI_FAILURE(status)) {
if (status == AE_NOT_IMPLEMENTED) {
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index cc95e20..18b75fe 100644
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -47,6 +47,7 @@
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
+#include "acdispat.h"

#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME("exprep")
@@ -455,6 +456,30 @@ acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info)
obj_desc->field.region_obj =
acpi_ns_get_attached_object(info->region_node);

+ /* Fields specific to generic_serial_bus fields */
+
+ obj_desc->field.access_length = info->access_length;
+
+ if (info->connection_node) {
+ second_desc = info->connection_node->object;
+ if (!(second_desc->common.flags & AOPOBJ_DATA_VALID)) {
+ status =
+ acpi_ds_get_buffer_arguments(second_desc);
+ if (ACPI_FAILURE(status)) {
+ acpi_ut_delete_object_desc(obj_desc);
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ obj_desc->field.resource_buffer =
+ second_desc->buffer.pointer;
+ obj_desc->field.resource_length =
+ (u16)second_desc->buffer.length;
+ } else if (info->resource_buffer) {
+ obj_desc->field.resource_buffer = info->resource_buffer;
+ obj_desc->field.resource_length = info->resource_length;
+ }
+
/* Allow full data read from EC address space */

if ((obj_desc->field.region_obj->region.space_id ==
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index e1fad0e..4037f90 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -484,34 +484,54 @@ 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 = (u32)
- ACPI_PTR_DIFF(parser_state->aml,
- parser_state->aml_start);
+ u32 aml_offset;
union acpi_parse_object *field;
+ union acpi_parse_object *arg = NULL;
u16 opcode;
u32 name;
+ u8 access_type;
+ u8 access_attribute;
+ u8 access_length;
+ u32 pkg_length;
+ u8 *pkg_end;
+ u32 buffer_length;

ACPI_FUNCTION_TRACE(ps_get_next_field);

+ aml_offset =
+ (u32)ACPI_PTR_DIFF(parser_state->aml, parser_state->aml_start);
+
/* Determine field type */

switch (ACPI_GET8(parser_state->aml)) {
- default:
+ case AML_FIELD_OFFSET_OP:

- opcode = AML_INT_NAMEDFIELD_OP;
+ opcode = AML_INT_RESERVEDFIELD_OP;
+ parser_state->aml++;
break;

- case 0x00:
+ case AML_FIELD_ACCESS_OP:

- opcode = AML_INT_RESERVEDFIELD_OP;
+ opcode = AML_INT_ACCESSFIELD_OP;
parser_state->aml++;
break;

- case 0x01:
+ case AML_FIELD_CONNECTION_OP:

- opcode = AML_INT_ACCESSFIELD_OP;
+ opcode = AML_INT_CONNECTION_OP;
+ parser_state->aml++;
+ break;
+
+ case AML_FIELD_EXT_ACCESS_OP:
+
+ opcode = AML_INT_EXTACCESSFIELD_OP;
parser_state->aml++;
break;
+
+ default:
+
+ opcode = AML_INT_NAMEDFIELD_OP;
+ break;
}

/* Allocate a new field op */
@@ -549,16 +569,111 @@ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state
break;

case AML_INT_ACCESSFIELD_OP:
+ case AML_INT_EXTACCESSFIELD_OP:

/*
* Get access_type and access_attrib and merge into the field Op
- * access_type is first operand, access_attribute is second
+ * access_type is first operand, access_attribute is second. stuff
+ * these bytes into the node integer value for convenience.
*/
- field->common.value.integer =
- (((u32) ACPI_GET8(parser_state->aml) << 8));
+
+ /* Get the two bytes (Type/Attribute) */
+
+ access_type = ACPI_GET8(parser_state->aml);
parser_state->aml++;
- field->common.value.integer |= ACPI_GET8(parser_state->aml);
+ access_attribute = ACPI_GET8(parser_state->aml);
parser_state->aml++;
+
+ field->common.value.integer = (u8)access_type;
+ field->common.value.integer |= (u16)(access_attribute << 8);
+
+ /* This opcode has a third byte, access_length */
+
+ if (opcode == AML_INT_EXTACCESSFIELD_OP) {
+ access_length = ACPI_GET8(parser_state->aml);
+ parser_state->aml++;
+
+ field->common.value.integer |=
+ (u32)(access_length << 16);
+ }
+ break;
+
+ case AML_INT_CONNECTION_OP:
+
+ /*
+ * Argument for Connection operator can be either a Buffer
+ * (resource descriptor), or a name_string.
+ */
+ if (ACPI_GET8(parser_state->aml) == AML_BUFFER_OP) {
+ parser_state->aml++;
+
+ pkg_end = parser_state->aml;
+ pkg_length =
+ acpi_ps_get_next_package_length(parser_state);
+ pkg_end += pkg_length;
+
+ if (parser_state->aml < pkg_end) {
+
+ /* Non-empty list */
+
+ arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP);
+ if (!arg) {
+ return_PTR(NULL);
+ }
+
+ /* Get the actual buffer length argument */
+
+ opcode = ACPI_GET8(parser_state->aml);
+ parser_state->aml++;
+
+ switch (opcode) {
+ case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
+ buffer_length =
+ ACPI_GET8(parser_state->aml);
+ parser_state->aml += 1;
+ break;
+
+ case AML_WORD_OP: /* AML_WORDDATA_ARG */
+ buffer_length =
+ ACPI_GET16(parser_state->aml);
+ parser_state->aml += 2;
+ break;
+
+ case AML_DWORD_OP: /* AML_DWORDATA_ARG */
+ buffer_length =
+ ACPI_GET32(parser_state->aml);
+ parser_state->aml += 4;
+ break;
+
+ default:
+ buffer_length = 0;
+ break;
+ }
+
+ /* Fill in bytelist data */
+
+ arg->named.value.size = buffer_length;
+ arg->named.data = parser_state->aml;
+ }
+
+ /* Skip to End of byte data */
+
+ parser_state->aml = pkg_end;
+ } else {
+ arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP);
+ if (!arg) {
+ return_PTR(NULL);
+ }
+
+ /* Get the Namestring argument */
+
+ arg->common.value.name =
+ acpi_ps_get_next_namestring(parser_state);
+ }
+
+ /* Link the buffer/namestring to parent (CONNECTION_OP) */
+
+ acpi_ps_append_arg(field, arg);
break;

default:
diff --git a/drivers/acpi/acpica/psopcode.c b/drivers/acpi/acpica/psopcode.c
index bed08de..9b31910 100644
--- a/drivers/acpi/acpica/psopcode.c
+++ b/drivers/acpi/acpica/psopcode.c
@@ -638,7 +638,16 @@ const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES] = {

/* 7E */ ACPI_OP("Timer", ARGP_TIMER_OP, ARGI_TIMER_OP, ACPI_TYPE_ANY,
AML_CLASS_EXECUTE, AML_TYPE_EXEC_0A_0T_1R,
- AML_FLAGS_EXEC_0A_0T_1R)
+ AML_FLAGS_EXEC_0A_0T_1R),
+
+/* ACPI 5.0 opcodes */
+
+/* 7F */ ACPI_OP("-ConnectField-", ARGP_CONNECTFIELD_OP,
+ ARGI_CONNECTFIELD_OP, ACPI_TYPE_ANY,
+ AML_CLASS_INTERNAL, AML_TYPE_BOGUS, AML_HAS_ARGS),
+/* 80 */ ACPI_OP("-ExtAccessField-", ARGP_CONNECTFIELD_OP,
+ ARGI_CONNECTFIELD_OP, ACPI_TYPE_ANY,
+ AML_CLASS_INTERNAL, AML_TYPE_BOGUS, 0)

/*! [End] no source code translation !*/
};
@@ -657,7 +666,7 @@ static const u8 acpi_gbl_short_op_index[256] = {
/* 0x20 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
/* 0x28 */ _UNK, _UNK, _UNK, _UNK, _UNK, 0x63, _PFX, _PFX,
/* 0x30 */ 0x67, 0x66, 0x68, 0x65, 0x69, 0x64, 0x6A, 0x7D,
-/* 0x38 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
+/* 0x38 */ 0x7F, 0x80, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
/* 0x40 */ _UNK, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
/* 0x48 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
/* 0x50 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c
index f1464c0..04311bb 100644
--- a/drivers/acpi/acpica/pstree.c
+++ b/drivers/acpi/acpica/pstree.c
@@ -74,6 +74,12 @@ union acpi_parse_object *acpi_ps_get_arg(union acpi_parse_object *op, u32 argn)

ACPI_FUNCTION_ENTRY();

+/*
+ if (Op->Common.aml_opcode == AML_INT_CONNECTION_OP)
+ {
+ return (Op->Common.Value.Arg);
+ }
+*/
/* Get the info structure for this opcode */

op_info = acpi_ps_get_opcode_info(op->common.aml_opcode);
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index ed73f67..d088c90 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -957,6 +957,14 @@ acpi_status(*acpi_adr_space_handler) (u32 function,

#define ACPI_DEFAULT_HANDLER NULL

+/* Special Context data for generic_serial_bus/general_purpose_io (ACPI 5.0) */
+
+struct acpi_connection_info {
+ u8 *connection;
+ u16 length;
+ u8 access_length;
+};
+
typedef
acpi_status(*acpi_adr_space_setup) (acpi_handle region_handle,
u32 function,
--
1.7.9.rc1


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