074a57f560
some machines to enable wake events for more devices although I haven't seen a system yet that uses this form. Also, introduce acpi_GetReference() which retrieves an object reference from various types.
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/*-
|
|
* Copyright (c) 2003 Nate Lawson
|
|
* 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.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/sbuf.h>
|
|
|
|
#include <machine/bus_pio.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include "acpi.h"
|
|
#include <dev/acpica/acpivar.h>
|
|
|
|
/*
|
|
* Package manipulation convenience functions
|
|
*/
|
|
|
|
int
|
|
acpi_PkgInt(ACPI_OBJECT *res, int idx, ACPI_INTEGER *dst)
|
|
{
|
|
ACPI_OBJECT *obj;
|
|
|
|
obj = &res->Package.Elements[idx];
|
|
if (obj == NULL || obj->Type != ACPI_TYPE_INTEGER)
|
|
return (EINVAL);
|
|
*dst = obj->Integer.Value;
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
acpi_PkgInt32(ACPI_OBJECT *res, int idx, uint32_t *dst)
|
|
{
|
|
ACPI_INTEGER tmp;
|
|
int error;
|
|
|
|
error = acpi_PkgInt(res, idx, &tmp);
|
|
if (error == 0)
|
|
*dst = (uint32_t)tmp;
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
acpi_PkgStr(ACPI_OBJECT *res, int idx, void *dst, size_t size)
|
|
{
|
|
ACPI_OBJECT *obj;
|
|
void *ptr;
|
|
size_t length;
|
|
|
|
obj = &res->Package.Elements[idx];
|
|
if (obj == NULL)
|
|
return (EINVAL);
|
|
bzero(dst, sizeof(dst));
|
|
|
|
switch (obj->Type) {
|
|
case ACPI_TYPE_STRING:
|
|
ptr = obj->String.Pointer;
|
|
length = obj->String.Length;
|
|
break;
|
|
case ACPI_TYPE_BUFFER:
|
|
ptr = obj->Buffer.Pointer;
|
|
length = obj->Buffer.Length;
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
|
|
/* Make sure string will fit, including terminating NUL */
|
|
if (++length > size)
|
|
return (E2BIG);
|
|
|
|
strlcpy(dst, ptr, length);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
acpi_PkgGas(device_t dev, ACPI_OBJECT *res, int idx, int *rid,
|
|
struct resource **dst)
|
|
{
|
|
ACPI_GENERIC_ADDRESS gas;
|
|
ACPI_OBJECT *obj;
|
|
|
|
obj = &res->Package.Elements[idx];
|
|
if (obj == NULL || obj->Type != ACPI_TYPE_BUFFER ||
|
|
obj->Buffer.Length < sizeof(ACPI_GENERIC_ADDRESS) + 3) {
|
|
|
|
return (EINVAL);
|
|
}
|
|
|
|
memcpy(&gas, obj->Buffer.Pointer + 3, sizeof(gas));
|
|
*dst = acpi_bus_alloc_gas(dev, rid, &gas);
|
|
if (*dst == NULL)
|
|
return (ENXIO);
|
|
|
|
return (0);
|
|
}
|
|
|
|
ACPI_HANDLE
|
|
acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj)
|
|
{
|
|
ACPI_HANDLE h;
|
|
|
|
if (obj == NULL)
|
|
return (NULL);
|
|
|
|
switch (obj->Type) {
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
case ACPI_TYPE_ANY:
|
|
h = obj->Reference.Handle;
|
|
break;
|
|
case ACPI_TYPE_STRING:
|
|
/*
|
|
* The String object usually contains a fully-qualified path, so
|
|
* scope can be NULL.
|
|
*
|
|
* XXX This may not always be the case.
|
|
*/
|
|
if (ACPI_FAILURE(AcpiGetHandle(scope, obj->String.Pointer, &h)))
|
|
h = NULL;
|
|
break;
|
|
default:
|
|
h = NULL;
|
|
break;
|
|
}
|
|
|
|
return (h);
|
|
}
|