1047 lines
29 KiB
C
1047 lines
29 KiB
C
/*-
|
|
* Copyright (c) 2009 Michael Gmelin <freebsd@grem.de>
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
/*
|
|
* Driver for acpi-wmi mapping, provides an interface for vendor specific
|
|
* implementations (e.g. HP and Acer laptops).
|
|
* Inspired by the ACPI-WMI mapping driver (c) 2008-2008 Carlos Corbacho which
|
|
* implements this functionality for Linux.
|
|
*
|
|
* WMI and ACPI: http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx
|
|
* acpi-wmi for Linux: http://www.kernel.org
|
|
*/
|
|
|
|
#include "opt_acpi.h"
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/sbuf.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <contrib/dev/acpica/include/acpi.h>
|
|
#include <contrib/dev/acpica/include/accommon.h>
|
|
#include <dev/acpica/acpivar.h>
|
|
#include "acpi_wmi_if.h"
|
|
|
|
static MALLOC_DEFINE(M_ACPIWMI, "acpiwmi", "ACPI-WMI mapping");
|
|
|
|
#define _COMPONENT ACPI_OEM
|
|
ACPI_MODULE_NAME("ACPI_WMI");
|
|
|
|
#define ACPI_WMI_REGFLAG_EXPENSIVE 0x1 /* GUID flag: Expensive operation */
|
|
#define ACPI_WMI_REGFLAG_METHOD 0x2 /* GUID flag: Method call */
|
|
#define ACPI_WMI_REGFLAG_STRING 0x4 /* GUID flag: String */
|
|
#define ACPI_WMI_REGFLAG_EVENT 0x8 /* GUID flag: Event */
|
|
#define ACPI_WMI_BMOF_UUID "05901221-D566-11D1-B2F0-00A0C9062910"
|
|
|
|
/*
|
|
* acpi_wmi driver private structure
|
|
*/
|
|
struct acpi_wmi_softc {
|
|
device_t wmi_dev; /* wmi device id */
|
|
ACPI_HANDLE wmi_handle; /* handle of the PNP0C14 node */
|
|
device_t ec_dev; /* acpi_ec0 */
|
|
struct cdev *wmistat_dev_t; /* wmistat device handle */
|
|
struct sbuf wmistat_sbuf; /* sbuf for /dev/wmistat output */
|
|
pid_t wmistat_open_pid; /* pid operating on /dev/wmistat */
|
|
int wmistat_bufptr; /* /dev/wmistat ptr to buffer position */
|
|
char *mofbuf;
|
|
|
|
TAILQ_HEAD(wmi_info_list_head, wmi_info) wmi_info_list;
|
|
};
|
|
|
|
/*
|
|
* Struct that holds information about
|
|
* about a single GUID entry in _WDG
|
|
*/
|
|
struct guid_info {
|
|
char guid[16]; /* 16 byte non human readable GUID */
|
|
char oid[2]; /* object id or event notify id (first byte) */
|
|
UINT8 max_instance; /* highest instance known for this GUID */
|
|
UINT8 flags; /* ACPI_WMI_REGFLAG_%s */
|
|
};
|
|
|
|
/* WExx event generation state (on/off) */
|
|
enum event_generation_state {
|
|
EVENT_GENERATION_ON = 1,
|
|
EVENT_GENERATION_OFF = 0
|
|
};
|
|
|
|
/*
|
|
* Information about one entry in _WDG.
|
|
* List of those is used to lookup information by GUID.
|
|
*/
|
|
struct wmi_info {
|
|
TAILQ_ENTRY(wmi_info) wmi_list;
|
|
struct guid_info ginfo; /* information on guid */
|
|
ACPI_NOTIFY_HANDLER event_handler;/* client provided event handler */
|
|
void *event_handler_user_data; /* ev handler cookie */
|
|
};
|
|
|
|
ACPI_SERIAL_DECL(acpi_wmi, "ACPI-WMI Mapping");
|
|
|
|
/* public interface - declaration */
|
|
/* standard device interface*/
|
|
static int acpi_wmi_probe(device_t dev);
|
|
static int acpi_wmi_attach(device_t dev);
|
|
static int acpi_wmi_detach(device_t dev);
|
|
/* see acpi_wmi_if.m */
|
|
static int acpi_wmi_provides_guid_string_method(device_t dev,
|
|
const char *guid_string);
|
|
static ACPI_STATUS acpi_wmi_evaluate_call_method(device_t dev,
|
|
const char *guid_string, UINT8 instance,
|
|
UINT32 method_id, const ACPI_BUFFER *in,
|
|
ACPI_BUFFER *out);
|
|
static ACPI_STATUS acpi_wmi_install_event_handler_method(device_t dev,
|
|
const char *guid_string, ACPI_NOTIFY_HANDLER handler,
|
|
void *data);
|
|
static ACPI_STATUS acpi_wmi_remove_event_handler_method(device_t dev,
|
|
const char *guid_string);
|
|
static ACPI_STATUS acpi_wmi_get_event_data_method(device_t dev,
|
|
UINT32 event_id, ACPI_BUFFER *out);
|
|
static ACPI_STATUS acpi_wmi_get_block_method(device_t dev,
|
|
const char *guid_string,
|
|
UINT8 instance, ACPI_BUFFER *out);
|
|
static ACPI_STATUS acpi_wmi_set_block_method(device_t dev,
|
|
const char *guid_string,
|
|
UINT8 instance, const ACPI_BUFFER *in);
|
|
/* private interface - declaration */
|
|
/* callbacks */
|
|
static void acpi_wmi_notify_handler(ACPI_HANDLE h, UINT32 notify,
|
|
void *context);
|
|
static ACPI_STATUS acpi_wmi_ec_handler(UINT32 function,
|
|
ACPI_PHYSICAL_ADDRESS address, UINT32 width,
|
|
UINT64 *value, void *context,
|
|
void *region_context);
|
|
/* helpers */
|
|
static ACPI_STATUS acpi_wmi_read_wdg_blocks(struct acpi_wmi_softc *sc, ACPI_HANDLE h);
|
|
static ACPI_STATUS acpi_wmi_toggle_we_event_generation(device_t dev,
|
|
struct wmi_info *winfo,
|
|
enum event_generation_state state);
|
|
static int acpi_wmi_guid_string_to_guid(const UINT8 *guid_string,
|
|
UINT8 *guid);
|
|
static struct wmi_info* acpi_wmi_lookup_wmi_info_by_guid_string(struct acpi_wmi_softc *sc,
|
|
const char *guid_string);
|
|
|
|
static d_open_t acpi_wmi_wmistat_open;
|
|
static d_close_t acpi_wmi_wmistat_close;
|
|
static d_read_t acpi_wmi_wmistat_read;
|
|
|
|
/* handler /dev/wmistat device */
|
|
static struct cdevsw wmistat_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_open = acpi_wmi_wmistat_open,
|
|
.d_close = acpi_wmi_wmistat_close,
|
|
.d_read = acpi_wmi_wmistat_read,
|
|
.d_name = "wmistat",
|
|
};
|
|
|
|
static device_method_t acpi_wmi_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, acpi_wmi_probe),
|
|
DEVMETHOD(device_attach, acpi_wmi_attach),
|
|
DEVMETHOD(device_detach, acpi_wmi_detach),
|
|
|
|
/* bus interface */
|
|
DEVMETHOD(bus_add_child, bus_generic_add_child),
|
|
|
|
/* acpi_wmi interface */
|
|
DEVMETHOD(acpi_wmi_provides_guid_string,
|
|
acpi_wmi_provides_guid_string_method),
|
|
DEVMETHOD(acpi_wmi_evaluate_call, acpi_wmi_evaluate_call_method),
|
|
DEVMETHOD(acpi_wmi_install_event_handler,
|
|
acpi_wmi_install_event_handler_method),
|
|
DEVMETHOD(acpi_wmi_remove_event_handler,
|
|
acpi_wmi_remove_event_handler_method),
|
|
DEVMETHOD(acpi_wmi_get_event_data, acpi_wmi_get_event_data_method),
|
|
DEVMETHOD(acpi_wmi_get_block, acpi_wmi_get_block_method),
|
|
DEVMETHOD(acpi_wmi_set_block, acpi_wmi_set_block_method),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static driver_t acpi_wmi_driver = {
|
|
"acpi_wmi",
|
|
acpi_wmi_methods,
|
|
sizeof(struct acpi_wmi_softc),
|
|
};
|
|
|
|
DRIVER_MODULE(acpi_wmi, acpi, acpi_wmi_driver, 0, 0);
|
|
MODULE_VERSION(acpi_wmi, 1);
|
|
MODULE_DEPEND(acpi_wmi, acpi, 1, 1, 1);
|
|
static char *wmi_ids[] = {"PNP0C14", NULL};
|
|
ACPI_PNP_INFO(wmi_ids);
|
|
|
|
/*
|
|
* Probe for the PNP0C14 ACPI node
|
|
*/
|
|
static int
|
|
acpi_wmi_probe(device_t dev)
|
|
{
|
|
int rv;
|
|
|
|
if (acpi_disabled("wmi"))
|
|
return (ENXIO);
|
|
rv = ACPI_ID_PROBE(device_get_parent(dev), dev, wmi_ids, NULL);
|
|
if (rv <= 0)
|
|
device_set_desc(dev, "ACPI-WMI mapping");
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Attach the device by:
|
|
* - Looking for the first ACPI EC device
|
|
* - Install the notify handler
|
|
* - Install the EC address space handler
|
|
* - Look for the _WDG node and read GUID information blocks
|
|
*/
|
|
static int
|
|
acpi_wmi_attach(device_t dev)
|
|
{
|
|
struct acpi_wmi_softc *sc;
|
|
int ret;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
sc = device_get_softc(dev);
|
|
ret = ENXIO;
|
|
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
sc->wmi_dev = dev;
|
|
sc->wmi_handle = acpi_get_handle(dev);
|
|
TAILQ_INIT(&sc->wmi_info_list);
|
|
/* XXX Only works with one EC, but nearly all systems only have one. */
|
|
if ((sc->ec_dev = devclass_get_device(devclass_find("acpi_ec"), 0))
|
|
== NULL)
|
|
device_printf(dev, "cannot find EC device\n");
|
|
if (ACPI_FAILURE((status = AcpiInstallNotifyHandler(sc->wmi_handle,
|
|
ACPI_DEVICE_NOTIFY, acpi_wmi_notify_handler, sc))))
|
|
device_printf(sc->wmi_dev, "couldn't install notify handler - %s\n",
|
|
AcpiFormatException(status));
|
|
else if (ACPI_FAILURE((status = AcpiInstallAddressSpaceHandler(
|
|
sc->wmi_handle, ACPI_ADR_SPACE_EC, acpi_wmi_ec_handler,
|
|
NULL, sc)))) {
|
|
device_printf(sc->wmi_dev, "couldn't install EC handler - %s\n",
|
|
AcpiFormatException(status));
|
|
AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
|
|
acpi_wmi_notify_handler);
|
|
} else if (ACPI_FAILURE((status = acpi_wmi_read_wdg_blocks(sc,
|
|
sc->wmi_handle)))) {
|
|
device_printf(sc->wmi_dev, "couldn't parse _WDG - %s\n",
|
|
AcpiFormatException(status));
|
|
AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
|
|
acpi_wmi_notify_handler);
|
|
AcpiRemoveAddressSpaceHandler(sc->wmi_handle, ACPI_ADR_SPACE_EC,
|
|
acpi_wmi_ec_handler);
|
|
} else {
|
|
sc->wmistat_dev_t = make_dev(&wmistat_cdevsw, 0, UID_ROOT,
|
|
GID_WHEEL, 0644, "wmistat%d", device_get_unit(dev));
|
|
sc->wmistat_dev_t->si_drv1 = sc;
|
|
sc->wmistat_open_pid = 0;
|
|
sc->wmistat_bufptr = -1;
|
|
ret = 0;
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
if (acpi_wmi_provides_guid_string_method(dev, ACPI_WMI_BMOF_UUID)) {
|
|
ACPI_BUFFER out = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
ACPI_OBJECT *obj;
|
|
|
|
device_printf(dev, "Embedded MOF found\n");
|
|
status = acpi_wmi_get_block_method(dev, ACPI_WMI_BMOF_UUID,
|
|
0, &out);
|
|
if (ACPI_SUCCESS(status)) {
|
|
obj = out.Pointer;
|
|
if (obj && obj->Type == ACPI_TYPE_BUFFER) {
|
|
SYSCTL_ADD_OPAQUE(device_get_sysctl_ctx(dev),
|
|
SYSCTL_CHILDREN(
|
|
device_get_sysctl_tree(dev)),
|
|
OID_AUTO, "bmof",
|
|
CTLFLAG_RD | CTLFLAG_MPSAFE,
|
|
obj->Buffer.Pointer,
|
|
obj->Buffer.Length,
|
|
"A", "MOF Blob");
|
|
}
|
|
}
|
|
sc->mofbuf = out.Pointer;
|
|
}
|
|
|
|
if (ret == 0) {
|
|
bus_generic_probe(dev);
|
|
ret = bus_generic_attach(dev);
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Detach the driver by:
|
|
* - Removing notification handler
|
|
* - Removing address space handler
|
|
* - Turning off event generation for all WExx event activated by
|
|
* child drivers
|
|
*/
|
|
static int
|
|
acpi_wmi_detach(device_t dev)
|
|
{
|
|
struct wmi_info *winfo, *tmp;
|
|
struct acpi_wmi_softc *sc;
|
|
int ret;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
sc = device_get_softc(dev);
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
|
|
if (sc->wmistat_open_pid != 0) {
|
|
ret = EBUSY;
|
|
} else {
|
|
AcpiRemoveNotifyHandler(sc->wmi_handle, ACPI_DEVICE_NOTIFY,
|
|
acpi_wmi_notify_handler);
|
|
AcpiRemoveAddressSpaceHandler(sc->wmi_handle,
|
|
ACPI_ADR_SPACE_EC, acpi_wmi_ec_handler);
|
|
TAILQ_FOREACH_SAFE(winfo, &sc->wmi_info_list, wmi_list, tmp) {
|
|
if (winfo->event_handler)
|
|
acpi_wmi_toggle_we_event_generation(dev,
|
|
winfo, EVENT_GENERATION_OFF);
|
|
TAILQ_REMOVE(&sc->wmi_info_list, winfo, wmi_list);
|
|
free(winfo, M_ACPIWMI);
|
|
}
|
|
if (sc->wmistat_bufptr != -1) {
|
|
sbuf_delete(&sc->wmistat_sbuf);
|
|
sc->wmistat_bufptr = -1;
|
|
}
|
|
sc->wmistat_open_pid = 0;
|
|
destroy_dev(sc->wmistat_dev_t);
|
|
ret = 0;
|
|
AcpiOsFree(sc->mofbuf);
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Check if the given GUID string (human readable format
|
|
* AABBCCDD-EEFF-GGHH-IIJJ-KKLLMMNNOOPP)
|
|
* exists within _WDG
|
|
*/
|
|
static int
|
|
acpi_wmi_provides_guid_string_method(device_t dev, const char *guid_string)
|
|
{
|
|
struct acpi_wmi_softc *sc;
|
|
struct wmi_info *winfo;
|
|
int ret;
|
|
|
|
sc = device_get_softc(dev);
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
winfo = acpi_wmi_lookup_wmi_info_by_guid_string(sc, guid_string);
|
|
ret = (winfo == NULL)?0:winfo->ginfo.max_instance+1;
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Call a method "method_id" on the given GUID block
|
|
* write result into user provided output buffer
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_evaluate_call_method(device_t dev, const char *guid_string,
|
|
UINT8 instance, UINT32 method_id, const ACPI_BUFFER *in, ACPI_BUFFER *out)
|
|
{
|
|
ACPI_OBJECT params[3];
|
|
ACPI_OBJECT_LIST input;
|
|
char method[5] = "WMxx";
|
|
struct wmi_info *winfo;
|
|
struct acpi_wmi_softc *sc;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
sc = device_get_softc(dev);
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(sc, guid_string))
|
|
== NULL)
|
|
status = AE_NOT_FOUND;
|
|
else if (!(winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
|
|
status = AE_BAD_DATA;
|
|
else if (instance > winfo->ginfo.max_instance)
|
|
status = AE_BAD_PARAMETER;
|
|
else {
|
|
params[0].Type = ACPI_TYPE_INTEGER;
|
|
params[0].Integer.Value = instance;
|
|
params[1].Type = ACPI_TYPE_INTEGER;
|
|
params[1].Integer.Value = method_id;
|
|
input.Pointer = params;
|
|
input.Count = 2;
|
|
if (in) {
|
|
params[2].Type =
|
|
(winfo->ginfo.flags & ACPI_WMI_REGFLAG_STRING)
|
|
?ACPI_TYPE_STRING:ACPI_TYPE_BUFFER;
|
|
params[2].Buffer.Length = in->Length;
|
|
params[2].Buffer.Pointer = in->Pointer;
|
|
input.Count = 3;
|
|
}
|
|
method[2] = winfo->ginfo.oid[0];
|
|
method[3] = winfo->ginfo.oid[1];
|
|
status = AcpiEvaluateObject(sc->wmi_handle, method,
|
|
&input, out);
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Install a user provided event_handler on the given GUID
|
|
* provided *data will be passed on callback
|
|
* If there is already an existing event handler registered it will be silently
|
|
* discarded
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_install_event_handler_method(device_t dev, const char *guid_string,
|
|
ACPI_NOTIFY_HANDLER event_handler, void *data)
|
|
{
|
|
struct acpi_wmi_softc *sc = device_get_softc(dev);
|
|
struct wmi_info *winfo;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
status = AE_OK;
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if (guid_string == NULL || event_handler == NULL)
|
|
status = AE_BAD_PARAMETER;
|
|
else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(sc, guid_string))
|
|
== NULL)
|
|
status = AE_NOT_EXIST;
|
|
else if (winfo->event_handler != NULL ||
|
|
(status = acpi_wmi_toggle_we_event_generation(dev, winfo,
|
|
EVENT_GENERATION_ON)) == AE_OK) {
|
|
winfo->event_handler = event_handler;
|
|
winfo->event_handler_user_data = data;
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Remove a previously installed event handler from the given GUID
|
|
* If there was none installed, this call is silently discarded and
|
|
* reported as AE_OK
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_remove_event_handler_method(device_t dev, const char *guid_string)
|
|
{
|
|
struct acpi_wmi_softc *sc = device_get_softc(dev);
|
|
struct wmi_info *winfo;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
status = AE_OK;
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if (guid_string &&
|
|
(winfo = acpi_wmi_lookup_wmi_info_by_guid_string(sc, guid_string))
|
|
!= NULL && winfo->event_handler) {
|
|
status = acpi_wmi_toggle_we_event_generation(dev, winfo,
|
|
EVENT_GENERATION_OFF);
|
|
winfo->event_handler = NULL;
|
|
winfo->event_handler_user_data = NULL;
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Get details on an event received through a callback registered
|
|
* through ACPI_WMI_REMOVE_EVENT_HANDLER into a user provided output buffer.
|
|
* (event_id equals "notify" passed in the callback)
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_get_event_data_method(device_t dev, UINT32 event_id, ACPI_BUFFER *out)
|
|
{
|
|
ACPI_OBJECT_LIST input;
|
|
ACPI_OBJECT params[1];
|
|
struct acpi_wmi_softc *sc;
|
|
struct wmi_info *winfo;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
sc = device_get_softc(dev);
|
|
status = AE_NOT_FOUND;
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
params[0].Type = ACPI_TYPE_INTEGER;
|
|
params[0].Integer.Value = event_id;
|
|
input.Pointer = params;
|
|
input.Count = 1;
|
|
TAILQ_FOREACH(winfo, &sc->wmi_info_list, wmi_list) {
|
|
if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) &&
|
|
((UINT8) winfo->ginfo.oid[0] == event_id)) {
|
|
status = AcpiEvaluateObject(sc->wmi_handle, "_WED",
|
|
&input, out);
|
|
break;
|
|
}
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Read a block of data from the given GUID (using WQxx (query))
|
|
* Will be returned in a user provided buffer (out).
|
|
* If the method is marked as expensive (ACPI_WMI_REGFLAG_EXPENSIVE)
|
|
* we will first call the WCxx control method to lock the node to
|
|
* lock the node for data collection and release it afterwards.
|
|
* (Failed WCxx calls are ignored to "support" broken implementations)
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_get_block_method(device_t dev, const char *guid_string, UINT8 instance,
|
|
ACPI_BUFFER *out)
|
|
{
|
|
char wc_method[5] = "WCxx";
|
|
char wq_method[5] = "WQxx";
|
|
ACPI_OBJECT_LIST wc_input;
|
|
ACPI_OBJECT_LIST wq_input;
|
|
ACPI_OBJECT wc_params[1];
|
|
ACPI_OBJECT wq_params[1];
|
|
ACPI_HANDLE wc_handle;
|
|
struct acpi_wmi_softc *sc;
|
|
struct wmi_info *winfo;
|
|
ACPI_STATUS status;
|
|
ACPI_STATUS wc_status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
sc = device_get_softc(dev);
|
|
wc_status = AE_ERROR;
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if (guid_string == NULL || out == NULL)
|
|
status = AE_BAD_PARAMETER;
|
|
else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(sc, guid_string))
|
|
== NULL)
|
|
status = AE_ERROR;
|
|
else if (instance > winfo->ginfo.max_instance)
|
|
status = AE_BAD_PARAMETER;
|
|
else if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) ||
|
|
(winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
|
|
status = AE_ERROR;
|
|
else {
|
|
wq_params[0].Type = ACPI_TYPE_INTEGER;
|
|
wq_params[0].Integer.Value = instance;
|
|
wq_input.Pointer = wq_params;
|
|
wq_input.Count = 1;
|
|
if (winfo->ginfo.flags & ACPI_WMI_REGFLAG_EXPENSIVE) {
|
|
wc_params[0].Type = ACPI_TYPE_INTEGER;
|
|
wc_params[0].Integer.Value = 1;
|
|
wc_input.Pointer = wc_params;
|
|
wc_input.Count = 1;
|
|
wc_method[2] = winfo->ginfo.oid[0];
|
|
wc_method[3] = winfo->ginfo.oid[1];
|
|
wc_status = AcpiGetHandle(sc->wmi_handle, wc_method,
|
|
&wc_handle);
|
|
if (ACPI_SUCCESS(wc_status))
|
|
wc_status = AcpiEvaluateObject(wc_handle,
|
|
wc_method, &wc_input, NULL);
|
|
}
|
|
wq_method[2] = winfo->ginfo.oid[0];
|
|
wq_method[3] = winfo->ginfo.oid[1];
|
|
status = AcpiEvaluateObject(sc->wmi_handle, wq_method,
|
|
&wq_input, out);
|
|
if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EXPENSIVE)
|
|
&& ACPI_SUCCESS(wc_status)) {
|
|
wc_params[0].Integer.Value = 0;
|
|
status = AcpiEvaluateObject(wc_handle, wc_method,
|
|
&wc_input, NULL); /* XXX this might be
|
|
the wrong status to
|
|
return? */
|
|
}
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Write a block of data to the given GUID (using WSxx)
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_set_block_method(device_t dev, const char *guid_string, UINT8 instance,
|
|
const ACPI_BUFFER *in)
|
|
{
|
|
char method[5] = "WSxx";
|
|
ACPI_OBJECT_LIST input;
|
|
ACPI_OBJECT params[2];
|
|
struct wmi_info *winfo;
|
|
struct acpi_wmi_softc *sc;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
sc = device_get_softc(dev);
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if (guid_string == NULL || in == NULL)
|
|
status = AE_BAD_DATA;
|
|
else if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(sc, guid_string))
|
|
== NULL)
|
|
status = AE_ERROR;
|
|
else if (instance > winfo->ginfo.max_instance)
|
|
status = AE_BAD_PARAMETER;
|
|
else if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) ||
|
|
(winfo->ginfo.flags & ACPI_WMI_REGFLAG_METHOD))
|
|
status = AE_ERROR;
|
|
else {
|
|
params[0].Type = ACPI_TYPE_INTEGER;
|
|
params[0].Integer.Value = instance;
|
|
input.Pointer = params;
|
|
input.Count = 2;
|
|
params[1].Type = (winfo->ginfo.flags & ACPI_WMI_REGFLAG_STRING)
|
|
?ACPI_TYPE_STRING:ACPI_TYPE_BUFFER;
|
|
params[1].Buffer.Length = in->Length;
|
|
params[1].Buffer.Pointer = in->Pointer;
|
|
method[2] = winfo->ginfo.oid[0];
|
|
method[3] = winfo->ginfo.oid[1];
|
|
status = AcpiEvaluateObject(sc->wmi_handle, method,
|
|
&input, NULL);
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Handle events received and dispatch them to
|
|
* stakeholders that registered through ACPI_WMI_INSTALL_EVENT_HANDLER
|
|
*/
|
|
static void
|
|
acpi_wmi_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
|
|
{
|
|
struct acpi_wmi_softc *sc = context;
|
|
ACPI_NOTIFY_HANDLER handler;
|
|
void *handler_data;
|
|
struct wmi_info *winfo;
|
|
|
|
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
|
|
|
|
handler = NULL;
|
|
handler_data = NULL;
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
TAILQ_FOREACH(winfo, &sc->wmi_info_list, wmi_list) {
|
|
if ((winfo->ginfo.flags & ACPI_WMI_REGFLAG_EVENT) &&
|
|
((UINT8) winfo->ginfo.oid[0] == notify)) {
|
|
if (winfo->event_handler) {
|
|
handler = winfo->event_handler;
|
|
handler_data = winfo->event_handler_user_data;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
if (handler) {
|
|
handler(h, notify, handler_data);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle EC address space notifications reveived on the WDG node
|
|
* (this mimics EcAddressSpaceHandler in acpi_ec.c)
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_ec_handler(UINT32 function, ACPI_PHYSICAL_ADDRESS address,
|
|
UINT32 width, UINT64 *value, void *context,
|
|
void *region_context)
|
|
{
|
|
struct acpi_wmi_softc *sc;
|
|
int i;
|
|
UINT64 ec_data;
|
|
UINT8 ec_addr;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, (UINT32)address);
|
|
|
|
sc = (struct acpi_wmi_softc *)context;
|
|
if (width % 8 != 0 || value == NULL || context == NULL)
|
|
return (AE_BAD_PARAMETER);
|
|
if (address + (width / 8) - 1 > 0xFF)
|
|
return (AE_BAD_ADDRESS);
|
|
if (sc->ec_dev == NULL)
|
|
return (AE_NOT_FOUND);
|
|
if (function == ACPI_READ)
|
|
*value = 0;
|
|
ec_addr = address;
|
|
status = AE_ERROR;
|
|
|
|
for (i = 0; i < width; i += 8, ++ec_addr) {
|
|
switch (function) {
|
|
case ACPI_READ:
|
|
status = ACPI_EC_READ(sc->ec_dev, ec_addr, &ec_data, 1);
|
|
if (ACPI_SUCCESS(status))
|
|
*value |= ((UINT64)ec_data) << i;
|
|
break;
|
|
case ACPI_WRITE:
|
|
ec_data = (UINT8)((*value) >> i);
|
|
status = ACPI_EC_WRITE(sc->ec_dev, ec_addr, ec_data, 1);
|
|
break;
|
|
default:
|
|
device_printf(sc->wmi_dev,
|
|
"invalid acpi_wmi_ec_handler function %d\n",
|
|
function);
|
|
status = AE_BAD_PARAMETER;
|
|
break;
|
|
}
|
|
if (ACPI_FAILURE(status))
|
|
break;
|
|
}
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Read GUID blocks from the _WDG node
|
|
* into wmi_info_list.
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_read_wdg_blocks(struct acpi_wmi_softc *sc, ACPI_HANDLE h)
|
|
{
|
|
ACPI_BUFFER out = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
struct guid_info *ginfo;
|
|
ACPI_OBJECT *obj;
|
|
struct wmi_info *winfo;
|
|
UINT32 i;
|
|
UINT32 wdg_block_count;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
ACPI_SERIAL_ASSERT(acpi_wmi);
|
|
if (ACPI_FAILURE(status = AcpiEvaluateObject(h, "_WDG", NULL, &out)))
|
|
return (status);
|
|
obj = (ACPI_OBJECT*) out.Pointer;
|
|
wdg_block_count = obj->Buffer.Length / sizeof(struct guid_info);
|
|
if ((ginfo = malloc(obj->Buffer.Length, M_ACPIWMI, M_NOWAIT))
|
|
== NULL) {
|
|
AcpiOsFree(out.Pointer);
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
memcpy(ginfo, obj->Buffer.Pointer, obj->Buffer.Length);
|
|
for (i = 0; i < wdg_block_count; ++i) {
|
|
if ((winfo = malloc(sizeof(struct wmi_info), M_ACPIWMI,
|
|
M_NOWAIT | M_ZERO)) == NULL) {
|
|
AcpiOsFree(out.Pointer);
|
|
free(ginfo, M_ACPIWMI);
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
winfo->ginfo = ginfo[i];
|
|
TAILQ_INSERT_TAIL(&sc->wmi_info_list, winfo, wmi_list);
|
|
}
|
|
AcpiOsFree(out.Pointer);
|
|
free(ginfo, M_ACPIWMI);
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Toggle event generation in for the given GUID (passed by winfo)
|
|
* Turn on to get notified (through acpi_wmi_notify_handler) if events happen
|
|
* on the given GUID.
|
|
*/
|
|
static ACPI_STATUS
|
|
acpi_wmi_toggle_we_event_generation(device_t dev, struct wmi_info *winfo,
|
|
enum event_generation_state state)
|
|
{
|
|
char method[5] = "WExx";
|
|
ACPI_OBJECT_LIST input;
|
|
ACPI_OBJECT params[1];
|
|
struct acpi_wmi_softc *sc;
|
|
ACPI_STATUS status;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
sc = device_get_softc(dev);
|
|
ACPI_SERIAL_ASSERT(acpi_wmi);
|
|
params[0].Type = ACPI_TYPE_INTEGER;
|
|
params[0].Integer.Value = state==EVENT_GENERATION_ON?1:0;
|
|
input.Pointer = params;
|
|
input.Count = 1;
|
|
|
|
UINT8 hi = ((UINT8) winfo->ginfo.oid[0]) >> 4;
|
|
UINT8 lo = ((UINT8) winfo->ginfo.oid[0]) & 0xf;
|
|
method[2] = (hi > 9 ? hi + 55: hi + 48);
|
|
method[3] = (lo > 9 ? lo + 55: lo + 48);
|
|
status = AcpiEvaluateObject(sc->wmi_handle, method, &input, NULL);
|
|
if (status == AE_NOT_FOUND) status = AE_OK;
|
|
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Convert given two digit hex string (hexin) to an UINT8 referenced
|
|
* by byteout.
|
|
* Return != 0 if the was a problem (invalid input)
|
|
*/
|
|
static __inline int acpi_wmi_hex_to_int(const UINT8 *hexin, UINT8 *byteout)
|
|
{
|
|
unsigned int hi;
|
|
unsigned int lo;
|
|
|
|
hi = hexin[0];
|
|
lo = hexin[1];
|
|
if ('0' <= hi && hi <= '9')
|
|
hi -= '0';
|
|
else if ('A' <= hi && hi <= 'F')
|
|
hi -= ('A' - 10);
|
|
else if ('a' <= hi && hi <= 'f')
|
|
hi -= ('a' - 10);
|
|
else
|
|
return (1);
|
|
if ('0' <= lo && lo <= '9')
|
|
lo -= '0';
|
|
else if ('A' <= lo && lo <= 'F')
|
|
lo -= ('A' - 10);
|
|
else if ('a' <= lo && lo <= 'f')
|
|
lo -= ('a' - 10);
|
|
else
|
|
return (1);
|
|
*byteout = (hi << 4) + lo;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Convert a human readable 36 character GUID into a 16byte
|
|
* machine readable one.
|
|
* The basic algorithm looks as follows:
|
|
* Input: AABBCCDD-EEFF-GGHH-IIJJ-KKLLMMNNOOPP
|
|
* Output: DCBAFEHGIJKLMNOP
|
|
* (AA BB CC etc. represent two digit hex numbers == bytes)
|
|
* Return != 0 if passed guid string is invalid
|
|
*/
|
|
static int
|
|
acpi_wmi_guid_string_to_guid(const UINT8 *guid_string, UINT8 *guid)
|
|
{
|
|
static const int mapping[20] = {3, 2, 1, 0, -1, 5, 4, -1, 7, 6, -1,
|
|
8, 9, -1, 10, 11, 12, 13, 14, 15};
|
|
int i;
|
|
|
|
for (i = 0; i < 20; ++i, ++guid_string) {
|
|
if (mapping[i] >= 0) {
|
|
if (acpi_wmi_hex_to_int(guid_string,
|
|
&guid[mapping[i]]))
|
|
return (-1);
|
|
++guid_string;
|
|
} else if (*guid_string != '-')
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Lookup a wmi_info structure in wmi_list based on a
|
|
* human readable GUID
|
|
* Return NULL if the GUID is unknown in the _WDG
|
|
*/
|
|
static struct wmi_info*
|
|
acpi_wmi_lookup_wmi_info_by_guid_string(struct acpi_wmi_softc *sc, const char *guid_string)
|
|
{
|
|
char guid[16];
|
|
struct wmi_info *winfo;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
ACPI_SERIAL_ASSERT(acpi_wmi);
|
|
|
|
if (!acpi_wmi_guid_string_to_guid(guid_string, guid)) {
|
|
TAILQ_FOREACH(winfo, &sc->wmi_info_list, wmi_list) {
|
|
if (!memcmp(winfo->ginfo.guid, guid, 16)) {
|
|
return (winfo);
|
|
}
|
|
}
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* open wmistat device
|
|
*/
|
|
static int
|
|
acpi_wmi_wmistat_open(struct cdev* dev, int flags, int mode, struct thread *td)
|
|
{
|
|
struct acpi_wmi_softc *sc;
|
|
int ret;
|
|
|
|
if (dev == NULL || dev->si_drv1 == NULL)
|
|
return (EBADF);
|
|
sc = dev->si_drv1;
|
|
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if (sc->wmistat_open_pid != 0) {
|
|
ret = EBUSY;
|
|
}
|
|
else {
|
|
if (sbuf_new(&sc->wmistat_sbuf, NULL, 4096, SBUF_AUTOEXTEND)
|
|
== NULL) {
|
|
ret = ENXIO;
|
|
} else {
|
|
sc->wmistat_open_pid = td->td_proc->p_pid;
|
|
sc->wmistat_bufptr = 0;
|
|
ret = 0;
|
|
}
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* close wmistat device
|
|
*/
|
|
static int
|
|
acpi_wmi_wmistat_close(struct cdev* dev, int flags, int mode,
|
|
struct thread *td)
|
|
{
|
|
struct acpi_wmi_softc *sc;
|
|
int ret;
|
|
|
|
if (dev == NULL || dev->si_drv1 == NULL)
|
|
return (EBADF);
|
|
sc = dev->si_drv1;
|
|
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if (sc->wmistat_open_pid == 0) {
|
|
ret = EBADF;
|
|
}
|
|
else {
|
|
if (sc->wmistat_bufptr != -1) {
|
|
sbuf_delete(&sc->wmistat_sbuf);
|
|
sc->wmistat_bufptr = -1;
|
|
}
|
|
sc->wmistat_open_pid = 0;
|
|
ret = 0;
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Read from wmistat guid information
|
|
*/
|
|
static int
|
|
acpi_wmi_wmistat_read(struct cdev *dev, struct uio *buf, int flag)
|
|
{
|
|
struct acpi_wmi_softc *sc;
|
|
struct wmi_info *winfo;
|
|
int l;
|
|
int ret;
|
|
UINT8* guid;
|
|
|
|
if (dev == NULL || dev->si_drv1 == NULL)
|
|
return (EBADF);
|
|
sc = dev->si_drv1;
|
|
|
|
ACPI_SERIAL_BEGIN(acpi_wmi);
|
|
if (sc->wmistat_open_pid != buf->uio_td->td_proc->p_pid ||
|
|
sc->wmistat_bufptr == -1) {
|
|
ret = EBADF;
|
|
}
|
|
else {
|
|
if (!sbuf_done(&sc->wmistat_sbuf)) {
|
|
sbuf_printf(&sc->wmistat_sbuf, "GUID "
|
|
" INST EXPE METH STR "
|
|
"EVENT OID\n");
|
|
TAILQ_FOREACH(winfo, &sc->wmi_info_list, wmi_list) {
|
|
guid = (UINT8*)winfo->ginfo.guid;
|
|
sbuf_printf(&sc->wmistat_sbuf,
|
|
"{%02X%02X%02X%02X-%02X%02X-"
|
|
"%02X%02X-%02X%02X-%02X%02X"
|
|
"%02X%02X%02X%02X} %3d %-5s",
|
|
guid[3], guid[2], guid[1], guid[0],
|
|
guid[5], guid[4],
|
|
guid[7], guid[6],
|
|
guid[8], guid[9],
|
|
guid[10], guid[11], guid[12],
|
|
guid[13], guid[14], guid[15],
|
|
winfo->ginfo.max_instance,
|
|
(winfo->ginfo.flags&
|
|
ACPI_WMI_REGFLAG_EXPENSIVE)?
|
|
"YES":"NO"
|
|
);
|
|
if (winfo->ginfo.flags&ACPI_WMI_REGFLAG_METHOD)
|
|
sbuf_printf(&sc->wmistat_sbuf,
|
|
"WM%c%c ",
|
|
winfo->ginfo.oid[0],
|
|
winfo->ginfo.oid[1]);
|
|
else
|
|
sbuf_printf(&sc->wmistat_sbuf, "NO ");
|
|
sbuf_printf(&sc->wmistat_sbuf, "%-4s",
|
|
(winfo->ginfo.flags&
|
|
ACPI_WMI_REGFLAG_STRING)?"YES":"NO"
|
|
);
|
|
if (winfo->ginfo.flags&ACPI_WMI_REGFLAG_EVENT)
|
|
sbuf_printf(&sc->wmistat_sbuf,
|
|
"0x%02X%s -\n",
|
|
(UINT8)winfo->ginfo.oid[0],
|
|
winfo->event_handler==NULL?
|
|
" ":"+");
|
|
else
|
|
sbuf_printf(&sc->wmistat_sbuf,
|
|
"NO %c%c\n",
|
|
winfo->ginfo.oid[0],
|
|
winfo->ginfo.oid[1]);
|
|
}
|
|
sbuf_finish(&sc->wmistat_sbuf);
|
|
}
|
|
if (sbuf_len(&sc->wmistat_sbuf) <= 0) {
|
|
sbuf_delete(&sc->wmistat_sbuf);
|
|
sc->wmistat_bufptr = -1;
|
|
sc->wmistat_open_pid = 0;
|
|
ret = ENOMEM;
|
|
} else {
|
|
l = min(buf->uio_resid, sbuf_len(&sc->wmistat_sbuf) -
|
|
sc->wmistat_bufptr);
|
|
ret = (l > 0)?uiomove(sbuf_data(&sc->wmistat_sbuf) +
|
|
sc->wmistat_bufptr, l, buf) : 0;
|
|
sc->wmistat_bufptr += l;
|
|
}
|
|
}
|
|
ACPI_SERIAL_END(acpi_wmi);
|
|
|
|
return (ret);
|
|
}
|