int ui_switch_init( Console* cons )
{
int status = 0;
/* Initialize switchio body */
/* Notice an Iobuf is only needed to point to the console. No
io should be done in this frame */
switchFrameio = &switchFrameiobody;
status = iobuf_init( switchFrameio, cons );
ASSERT( status == ERR_NONE );
switchFrame = &switchFramebody;
buffers[ 0 ] = buffersbody;
buffers[ 1 ] = buffersbody + UI_SWITCH_WIDTH;
status = region_setup( switchFrame, 0,
UI_SWITCH_COLUMN, UI_SWITCH_ROW,
UI_SWITCH_WIDTH, UI_SWITCH_HEIGHT,
UI_SWITCH_HORIZONTAL_MARGIN, UI_SWITCH_VERTICAL_MARGIN,
UI_SWITCH_BOUNDRY, switchFrameio, buffers );
ASSERT( status == ERR_NONE );
status = region_init( switchFrame );
ASSERT( status == ERR_NONE );
status = region_write( switchFrame, UI_SWITCH_TITLE );
ASSERT( status == ERR_NONE );
while( ! region_flushed( switchFrame ) ){
status = region_flush( switchFrame );
ASSERT( status == ERR_NONE );
}
/* Print switch names */
status = ui_switch_names( cons );
ASSERT( status == ERR_NONE );
/* Init switch individual states */
status = ui_switch_state_init( cons );
ASSERT( status == ERR_NONE );
return ERR_NONE;
}
int ui_timer_init( Console* outputCons )
{
int status = 0;
iobuf = &iobody;
status = iobuf_init( iobuf, outputCons );
ASSERT( status == ERR_NONE );
buffers[ 0 ] = buffersbody;
buffers[ 1 ] = buffersbody + UI_TIME_WIDTH;
cons = &consbody;
status = region_setup( cons, 0, UI_TIME_COLUMN, UI_TIME_ROW, UI_TIME_WIDTH, UI_TIME_HEIGHT, UI_TIME_HORIZONTAL_MARGIN, UI_TIME_VERTICAL_MARGIN, UI_TIME_BOUNDRY, iobuf, buffers );
ASSERT( status == ERR_NONE );
status = region_init( cons );
ASSERT( status == ERR_NONE );
DEBUG_PRINT( DBG_TIMER, "%s: Done\n", __func__ );
return ERR_NONE;
}
static inline int ui_switch_state_init( Console* cons )
{
uint i = 0;
int status = 0;
uchar* buffers[ 2 ] = { 0 };
for( i = 0; i < SWITCHES_COUNT; i += 1 ){
status = iobuf_init( switchesIoBuf + i, cons );
ASSERT( status == ERR_NONE );
buffers[ 0 ] = switchesOutBuf + i * 2;
buffers[ 1 ] = switchesOutBuf + i * 2 + 1;
region_setup( switches + i, switchFrame,
( i % UI_SWITCH_NAME_PER_LINE ) * UI_SWITCH_NAME_SIZE + UI_SWITCH_STATE_OFFSET,
( i / UI_SWITCH_NAME_PER_LINE ) + 2,
1, 1, 0, 0, 0, switchesIoBuf + i, buffers );
region_init( switches + i );
}
return ERR_NONE;
}
void
acpi_ev_detach_region(union acpi_operand_object *region_obj,
u8 acpi_ns_is_locked)
{
union acpi_operand_object *handler_obj;
union acpi_operand_object *obj_desc;
union acpi_operand_object *start_desc;
union acpi_operand_object **last_obj_ptr;
acpi_adr_space_setup region_setup;
void **region_context;
union acpi_operand_object *region_obj2;
acpi_status status;
ACPI_FUNCTION_TRACE(ev_detach_region);
region_obj2 = acpi_ns_get_secondary_object(region_obj);
if (!region_obj2) {
return_VOID;
}
region_context = ®ion_obj2->extra.region_context;
/* Get the address handler from the region object */
handler_obj = region_obj->region.handler;
if (!handler_obj) {
/* This region has no handler, all done */
return_VOID;
}
/* Find this region in the handler's list */
obj_desc = handler_obj->address_space.region_list;
start_desc = obj_desc;
last_obj_ptr = &handler_obj->address_space.region_list;
while (obj_desc) {
/* Is this the correct Region? */
if (obj_desc == region_obj) {
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Removing Region %p from address handler %p\n",
region_obj, handler_obj));
/* This is it, remove it from the handler's list */
*last_obj_ptr = obj_desc->region.next;
obj_desc->region.next = NULL; /* Must clear field */
if (acpi_ns_is_locked) {
status =
acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_VOID;
}
}
/* Now stop region accesses by executing the _REG method */
status =
acpi_ev_execute_reg_method(region_obj,
ACPI_REG_DISCONNECT);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"from region _REG, [%s]",
acpi_ut_get_region_name
(region_obj->region.space_id)));
}
if (acpi_ns_is_locked) {
status =
acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_VOID;
}
}
/*
* If the region has been activated, call the setup handler with
* the deactivate notification
*/
if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
region_setup = handler_obj->address_space.setup;
status =
region_setup(region_obj,
ACPI_REGION_DEACTIVATE,
handler_obj->address_space.
context, region_context);
/*
* region_context should have been released by the deactivate
* operation. We don't need access to it anymore here.
*/
if (region_context) {
*region_context = NULL;
}
/* Init routine may fail, Just ignore errors */
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"from region handler - deactivate, [%s]",
acpi_ut_get_region_name
(region_obj->region.
space_id)));
}
region_obj->region.flags &=
~(AOPOBJ_SETUP_COMPLETE);
}
/*
* Remove handler reference in the region
*
* NOTE: this doesn't mean that the region goes away, the region
* is just inaccessible as indicated to the _REG method
*
* If the region is on the handler's list, this must be the
* region's handler
*/
region_obj->region.handler = NULL;
acpi_ut_remove_reference(handler_obj);
return_VOID;
}
/* Walk the linked list of handlers */
last_obj_ptr = &obj_desc->region.next;
obj_desc = obj_desc->region.next;
/* Prevent infinite loop if list is corrupted */
if (obj_desc == start_desc) {
ACPI_ERROR((AE_INFO,
"Circular handler list in region object %p",
region_obj));
return_VOID;
}
}
/* If we get here, the region was not in the handler's region list */
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Cannot remove region %p from address handler %p\n",
region_obj, handler_obj));
return_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)
{
acpi_status status;
acpi_adr_space_handler handler;
acpi_adr_space_setup region_setup;
union acpi_operand_object *handler_desc;
union acpi_operand_object *region_obj2;
void *region_context = NULL;
struct acpi_connection_info *context;
acpi_physical_address address;
ACPI_FUNCTION_TRACE(ev_address_space_dispatch);
region_obj2 = acpi_ns_get_secondary_object(region_obj);
if (!region_obj2) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Ensure that there is a handler associated with this region */
handler_desc = region_obj->region.handler;
if (!handler_desc) {
ACPI_ERROR((AE_INFO,
"No handler for Region [%4.4s] (%p) [%s]",
acpi_ut_get_node_name(region_obj->region.node),
region_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));
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
*/
if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
/* This region has not been initialized yet, do it */
region_setup = handler_desc->address_space.setup;
if (!region_setup) {
/* No initialization routine, exit with error */
ACPI_ERROR((AE_INFO,
"No init routine for region(%p) [%s]",
region_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));
return_ACPI_STATUS(AE_NOT_EXIST);
}
/*
* We must exit the interpreter because the region setup will
* potentially execute control methods (for example, the _REG method
* for this region)
*/
acpi_ex_exit_interpreter();
status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
context, ®ion_context);
/* Re-enter the interpreter */
acpi_ex_enter_interpreter();
/* Check for failure of the Region Setup */
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"During region initialization: [%s]",
acpi_ut_get_region_name(region_obj->
region.
space_id)));
return_ACPI_STATUS(status);
}
/* Region initialization may have been completed by region_setup */
if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;
/*
* Save the returned context for use in all accesses to
* the handler for this particular region
*/
if (!(region_obj2->extra.region_context)) {
region_obj2->extra.region_context =
region_context;
}
}
}
/* We have everything we need, we can invoke the address space handler */
handler = handler_desc->address_space.handler;
address = (region_obj->region.address + region_offset);
/*
* 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
*
* In addition, for general_purpose_io, the Address and bit_width fields
* are defined as follows:
* 1) Address is the pin number index of the field (bit offset from
* the previous Connection)
* 2) bit_width is the actual bit length of the field (number of pins)
*/
if ((region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS) &&
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 ((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;
address = field_obj->field.pin_number_index;
bit_width = field_obj->field.bit_length;
}
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
®ion_obj->region.handler->address_space, handler,
ACPI_FORMAT_NATIVE_UINT(address),
acpi_ut_get_region_name(region_obj->region.
space_id)));
if (!(handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* For handlers other than the default (supplied) handlers, we must
* exit the interpreter because the handler *might* block -- we don't
* know what it will do, so we can't hold the lock on the intepreter.
*/
acpi_ex_exit_interpreter();
}
/* Call the handler */
status = handler(function, address, bit_width, value, context,
region_obj2->extra.region_context);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]",
acpi_ut_get_region_name(region_obj->region.
space_id)));
}
if (!(handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* We just returned from a non-default handler, we must re-enter the
* interpreter
*/
acpi_ex_enter_interpreter();
}
return_ACPI_STATUS(status);
}
acpi_status
acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
u32 function,
acpi_physical_address address,
u32 bit_width, acpi_integer * value)
{
acpi_status status;
acpi_status status2;
acpi_adr_space_handler handler;
acpi_adr_space_setup region_setup;
union acpi_operand_object *handler_desc;
union acpi_operand_object *region_obj2;
void *region_context = NULL;
ACPI_FUNCTION_TRACE(ev_address_space_dispatch);
region_obj2 = acpi_ns_get_secondary_object(region_obj);
if (!region_obj2) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
/* Ensure that there is a handler associated with this region */
handler_desc = region_obj->region.handler;
if (!handler_desc) {
ACPI_ERROR((AE_INFO,
"No handler for Region [%4.4s] (%p) [%s]",
acpi_ut_get_node_name(region_obj->region.node),
region_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));
return_ACPI_STATUS(AE_NOT_EXIST);
}
/*
* It may be the case that the region has never been initialized
* Some types of regions require special init code
*/
if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
/*
* This region has not been initialized yet, do it
*/
region_setup = handler_desc->address_space.setup;
if (!region_setup) {
/* No initialization routine, exit with error */
ACPI_ERROR((AE_INFO,
"No init routine for region(%p) [%s]",
region_obj,
acpi_ut_get_region_name(region_obj->region.
space_id)));
return_ACPI_STATUS(AE_NOT_EXIST);
}
/*
* We must exit the interpreter because the region
* setup will potentially execute control methods
* (e.g., _REG method for this region)
*/
acpi_ex_exit_interpreter();
status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
handler_desc->address_space.context,
®ion_context);
/* Re-enter the interpreter */
status2 = acpi_ex_enter_interpreter();
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
/* Check for failure of the Region Setup */
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"During region initialization: [%s]",
acpi_ut_get_region_name(region_obj->
region.
space_id)));
return_ACPI_STATUS(status);
}
/*
* Region initialization may have been completed by region_setup
*/
if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;
if (region_obj2->extra.region_context) {
/* The handler for this region was already installed */
ACPI_FREE(region_context);
} else {
/*
* Save the returned context for use in all accesses to
* this particular region
*/
region_obj2->extra.region_context =
region_context;
}
}
}
/* We have everything we need, we can invoke the address space handler */
handler = handler_desc->address_space.handler;
ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
"Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
®ion_obj->region.handler->address_space, handler,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(region_obj->region.
space_id)));
if (!(handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* For handlers other than the default (supplied) handlers, we must
* exit the interpreter because the handler *might* block -- we don't
* know what it will do, so we can't hold the lock on the intepreter.
*/
acpi_ex_exit_interpreter();
}
/* Call the handler */
status = handler(function, address, bit_width, value,
handler_desc->address_space.context,
region_obj2->extra.region_context);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]",
acpi_ut_get_region_name(region_obj->region.
space_id)));
}
if (!(handler_desc->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* We just returned from a non-default handler, we must re-enter the
* interpreter
*/
status2 = acpi_ex_enter_interpreter();
if (ACPI_FAILURE(status2)) {
return_ACPI_STATUS(status2);
}
}
return_ACPI_STATUS(status);
}
void
acpi_ev_detach_region(
union acpi_operand_object *region_obj,
u8 acpi_ns_is_locked)
{
union acpi_operand_object *handler_obj;
union acpi_operand_object *obj_desc;
union acpi_operand_object **last_obj_ptr;
acpi_adr_space_setup region_setup;
void **region_context;
union acpi_operand_object *region_obj2;
acpi_status status;
ACPI_FUNCTION_TRACE ("ev_detach_region");
region_obj2 = acpi_ns_get_secondary_object (region_obj);
if (!region_obj2) {
return_VOID;
}
region_context = ®ion_obj2->extra.region_context;
/* Get the address handler from the region object */
handler_obj = region_obj->region.address_space;
if (!handler_obj) {
/* This region has no handler, all done */
return_VOID;
}
/* Find this region in the handler's list */
obj_desc = handler_obj->address_space.region_list;
last_obj_ptr = &handler_obj->address_space.region_list;
while (obj_desc) {
/* Is this the correct Region? */
if (obj_desc == region_obj) {
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
"Removing Region %p from address handler %p\n",
region_obj, handler_obj));
/* This is it, remove it from the handler's list */
*last_obj_ptr = obj_desc->region.next;
obj_desc->region.next = NULL; /* Must clear field */
if (acpi_ns_is_locked) {
status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (status)) {
return_VOID;
}
}
/* Now stop region accesses by executing the _REG method */
status = acpi_ev_execute_reg_method (region_obj, 0);
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s from region _REG, [%s]\n",
acpi_format_exception (status),
acpi_ut_get_region_name (region_obj->region.space_id)));
}
if (acpi_ns_is_locked) {
status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE (status)) {
return_VOID;
}
}
/* Call the setup handler with the deactivate notification */
region_setup = handler_obj->address_space.setup;
status = region_setup (region_obj, ACPI_REGION_DEACTIVATE,
handler_obj->address_space.context, region_context);
/* Init routine may fail, Just ignore errors */
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s from region init, [%s]\n",
acpi_format_exception (status),
acpi_ut_get_region_name (region_obj->region.space_id)));
}
region_obj->region.flags &= ~(AOPOBJ_SETUP_COMPLETE);
/*
* Remove handler reference in the region
*
* NOTE: this doesn't mean that the region goes away
* The region is just inaccessible as indicated to
* the _REG method
*
* If the region is on the handler's list
* this better be the region's handler
*/
region_obj->region.address_space = NULL;
acpi_ut_remove_reference (handler_obj);
return_VOID;
}
/* Walk the linked list of handlers */
last_obj_ptr = &obj_desc->region.next;
obj_desc = obj_desc->region.next;
}
/* If we get here, the region was not in the handler's region list */
ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
"Cannot remove region %p from address handler %p\n",
region_obj, handler_obj));
return_VOID;
}
static inline int ui_switch_names( Console* cons )
{
/* Switch name */
Iobuf switchNameIobody;
Iobuf* switchNameIo;
Region switchNamebody;
Region* switchName;
uchar switchNameBuffer[ UI_SWITCH_NAME_SIZE * 2 ];
uchar* switchNamebuffers[ 2 ];
int status = 0;
int i = 1;
int switchId = 1;
uchar curname[ UI_SWITCH_NAME_SIZE ] = UI_SWITCH_NAME;
uint convSize = 0;
switchNameIo = &switchNameIobody;
switchName = &switchNamebody;
switchNamebuffers[ 0 ] = switchNameBuffer;
switchNamebuffers[ 1 ] = switchNameBuffer + UI_SWITCH_NAME_SIZE;
while( 1 ){
status = iobuf_init( switchNameIo, cons );
ASSERT( status == ERR_NONE );
status = region_setup( switchName, switchFrame,
( ( ( i - 1 ) % UI_SWITCH_NAME_PER_LINE ) * UI_SWITCH_NAME_SIZE ),
( i - 1 ) / UI_SWITCH_NAME_PER_LINE + 2,
UI_SWITCH_NAME_SIZE, 1,
0, 0,
0, switchNameIo, switchNamebuffers );
ASSERT( status == ERR_NONE );
status = region_init( switchName );
ASSERT( status == ERR_NONE );
if( i > 18 ){
switchId = 153 + i - 19;
} else {
switchId = i;
}
convSize = utos( switchId, (char*)(curname + UI_SWITCH_NAME_NUMBER_OFFSET) );
switch( convSize ){
case 1:
curname[ UI_SWITCH_NAME_NUMBER_OFFSET + 2 ] = curname[ UI_SWITCH_NAME_NUMBER_OFFSET ];
curname[ UI_SWITCH_NAME_NUMBER_OFFSET ] = ' ';
curname[ UI_SWITCH_NAME_NUMBER_OFFSET + 1 ] = ' ';
break;
case 2:
curname[ UI_SWITCH_NAME_NUMBER_OFFSET + 2 ] = curname[ UI_SWITCH_NAME_NUMBER_OFFSET + 1 ];
curname[ UI_SWITCH_NAME_NUMBER_OFFSET + 1 ] = curname[ UI_SWITCH_NAME_NUMBER_OFFSET ];
curname[ UI_SWITCH_NAME_NUMBER_OFFSET ] = ' ';
}
curname[ UI_SWITCH_NAME_NUMBER_OFFSET + 3 ] = ' ';
curname[ UI_SWITCH_NAME_SIZE - 1 ] = '\0';
status = region_write( switchName, (char*)curname );
ASSERT( status == ERR_NONE );
while( ! region_flushed( switchName ) ){
status = region_flush( switchName );
ASSERT( status == ERR_NONE );
}
i += 1;
if( i > SWITCHES_COUNT ){
break;
}
}
return ERR_NONE;
}
void
acpi_ev_disassociate_region_from_handler(
ACPI_OPERAND_OBJECT *region_obj,
u8 acpi_ns_is_locked)
{
ACPI_OPERAND_OBJECT *handler_obj;
ACPI_OPERAND_OBJECT *obj_desc;
ACPI_OPERAND_OBJECT **last_obj_ptr;
ADDRESS_SPACE_SETUP region_setup;
void *region_context;
ACPI_STATUS status;
region_context = region_obj->region.extra->extra.region_context;
/*
* Get the address handler from the region object
*/
handler_obj = region_obj->region.addr_handler;
if (!handler_obj) {
/*
* This region has no handler, all done
*/
return;
}
/*
* Find this region in the handler's list
*/
obj_desc = handler_obj->addr_handler.region_list;
last_obj_ptr = &handler_obj->addr_handler.region_list;
while (obj_desc) {
/*
* See if this is the one
*/
if (obj_desc == region_obj) {
/*
* This is it, remove it from the handler's list
*/
*last_obj_ptr = obj_desc->region.next;
obj_desc->region.next = NULL; /* Must clear field */
if (acpi_ns_is_locked) {
acpi_cm_release_mutex (ACPI_MTX_NAMESPACE);
}
/*
* Now stop region accesses by executing the _REG method
*/
acpi_ev_execute_reg_method (region_obj, 0);
if (acpi_ns_is_locked) {
acpi_cm_acquire_mutex (ACPI_MTX_NAMESPACE);
}
/*
* Call the setup handler with the deactivate notification
*/
region_setup = handler_obj->addr_handler.setup;
status = region_setup (region_obj, ACPI_REGION_DEACTIVATE,
handler_obj->addr_handler.context,
®ion_context);
/*
* Init routine may fail, Just ignore errors
*/
region_obj->region.flags &= ~(AOPOBJ_INITIALIZED);
/*
* Remove handler reference in the region
*
* NOTE: this doesn't mean that the region goes away
* The region is just inaccessible as indicated to
* the _REG method
*
* If the region is on the handler's list
* this better be the region's handler
*/
ACPI_ASSERT (region_obj->region.addr_handler == handler_obj);
region_obj->region.addr_handler = NULL;
return;
} /* found the right handler */
/*
* Move through the linked list of handlers
*/
last_obj_ptr = &obj_desc->region.next;
obj_desc = obj_desc->region.next;
}
/*
* If we get here, the region was not in the handler's region list
*/
return;
}
ACPI_STATUS
acpi_ev_address_space_dispatch (
ACPI_OPERAND_OBJECT *region_obj,
u32 function,
ACPI_PHYSICAL_ADDRESS address,
u32 bit_width,
u32 *value)
{
ACPI_STATUS status;
ADDRESS_SPACE_HANDLER handler;
ADDRESS_SPACE_SETUP region_setup;
ACPI_OPERAND_OBJECT *handler_desc;
void *region_context = NULL;
/*
* Check for an installed handler
*/
handler_desc = region_obj->region.addr_handler;
if (!handler_desc) {
return(AE_NOT_EXIST);
}
/*
* It may be the case that the region has never been initialized
* Some types of regions require special init code
*/
if (!(region_obj->region.flags & AOPOBJ_INITIALIZED)) {
/*
* This region has not been initialized yet, do it
*/
region_setup = handler_desc->addr_handler.setup;
if (!region_setup) {
/*
* Bad news, no init routine and not init'd
*/
return (AE_UNKNOWN_STATUS);
}
/*
* We must exit the interpreter because the region setup will potentially
* execute control methods
*/
acpi_aml_exit_interpreter ();
status = region_setup (region_obj, ACPI_REGION_ACTIVATE,
handler_desc->addr_handler.context,
®ion_context);
/* Re-enter the interpreter */
acpi_aml_enter_interpreter ();
/*
* Init routine may fail
*/
if (ACPI_FAILURE (status)) {
return(status);
}
region_obj->region.flags |= AOPOBJ_INITIALIZED;
/*
* Save the returned context for use in all accesses to
* this particular region.
*/
region_obj->region.extra->extra.region_context = region_context;
}
/*
* We have everything we need, begin the process
*/
handler = handler_desc->addr_handler.handler;
if (!(handler_desc->addr_handler.flags & ADDR_HANDLER_DEFAULT_INSTALLED)) {
/*
* For handlers other than the default (supplied) handlers, we must
* exit the interpreter because the handler *might* block -- we don't
* know what it will do, so we can't hold the lock on the intepreter.
*/
acpi_aml_exit_interpreter();
}
/*
* Invoke the handler.
*/
status = handler (function, address, bit_width, value,
handler_desc->addr_handler.context,
region_obj->region.extra->extra.region_context);
if (!(handler_desc->addr_handler.flags & ADDR_HANDLER_DEFAULT_INSTALLED)) {
/* We just returned from a non-default handler, we must re-enter the
interpreter */
acpi_aml_enter_interpreter ();
}
return (status);
}
