Please take a look at the following patch and a commit message that explains it.
I observed the problem on a system with acpi_wmi instances where one instance
overrode GUID list from the other.
commit f1f4109b1588872906ed56086e2680ac1af96268
Author: Andriy Gapon <a...@icyb.net.ua>
Date: Thu Sep 27 13:48:18 2012 +0300
acpi_wmi: move wmi_info_list into sc
different instances of acpi_wmi couldn't properly share it and in fact
there was no reason to do that
diff --git a/sys/dev/acpi_support/acpi_wmi.c b/sys/dev/acpi_support/acpi_wmi.c
index 5a37979..5927ee1 100644
--- a/sys/dev/acpi_support/acpi_wmi.c
+++ b/sys/dev/acpi_support/acpi_wmi.c
@@ -74,6 +74,7 @@ struct acpi_wmi_softc {
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
*/
+ TAILQ_HEAD(wmi_info_list_head, wmi_info) wmi_info_list;
};
/*
@@ -105,8 +106,6 @@ struct wmi_info {
void *event_handler_user_data; /* ev handler cookie
*/
};
-TAILQ_HEAD(wmi_info_list_head, wmi_info)
- wmi_info_list = TAILQ_HEAD_INITIALIZER(wmi_info_list);
ACPI_SERIAL_DECL(acpi_wmi, "ACPI-WMI Mapping");
@@ -146,13 +145,13 @@ static ACPI_STATUS acpi_wmi_ec_handler(UINT32
function,
void *region_context);
#endif
/* helpers */
-static ACPI_STATUS acpi_wmi_read_wdg_blocks(ACPI_HANDLE h);
+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(
+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;
@@ -240,7 +239,7 @@ acpi_wmi_attach(device_t dev)
ACPI_SERIAL_BEGIN(acpi_wmi);
sc->wmi_dev = dev;
sc->wmi_handle = acpi_get_handle(dev);
- TAILQ_INIT(&wmi_info_list);
+ TAILQ_INIT(&sc->wmi_info_list);
#if 0
/* 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))
@@ -263,7 +262,7 @@ acpi_wmi_attach(device_t dev)
acpi_wmi_notify_handler);
}
#endif
- else if (ACPI_FAILURE((status = acpi_wmi_read_wdg_blocks(
+ 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));
@@ -318,11 +317,11 @@ acpi_wmi_detach(device_t dev)
AcpiRemoveAddressSpaceHandler(sc->wmi_handle,
ACPI_ADR_SPACE_EC, acpi_wmi_ec_handler);
#endif
- TAILQ_FOREACH_SAFE(winfo, &wmi_info_list, wmi_list, tmp) {
+ 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(&wmi_info_list, winfo, wmi_list);
+ TAILQ_REMOVE(&sc->wmi_info_list, winfo, wmi_list);
free(winfo, M_ACPIWMI);
}
if (sc->wmistat_bufptr != -1) {
@@ -347,12 +346,14 @@ acpi_wmi_detach(device_t dev)
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(guid_string);
+ 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);
@@ -378,7 +379,7 @@ acpi_wmi_evaluate_call_method(device_t dev, const char
*guid_string,
sc = device_get_softc(dev);
ACPI_SERIAL_BEGIN(acpi_wmi);
- if ((winfo = acpi_wmi_lookup_wmi_info_by_guid_string(guid_string))
+ 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))
@@ -420,6 +421,7 @@ 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;
@@ -429,7 +431,7 @@ acpi_wmi_install_event_handler_method(device_t dev, const
char
*guid_string,
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(guid_string))
+ 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 ||
@@ -451,6 +453,7 @@ acpi_wmi_install_event_handler_method(device_t dev, const
char
*guid_string,
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;
@@ -459,7 +462,7 @@ acpi_wmi_remove_event_handler_method(device_t dev, const
char
*guid_string)
status = AE_OK;
ACPI_SERIAL_BEGIN(acpi_wmi);
if (guid_string &&
- (winfo = acpi_wmi_lookup_wmi_info_by_guid_string(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);
@@ -494,7 +497,7 @@ acpi_wmi_get_event_data_method(device_t dev, UINT32
event_id,
ACPI_BUFFER *out)
params[0].Integer.Value = event_id;
input.Pointer = params;
input.Count = 1;
- TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ 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",
@@ -538,7 +541,7 @@ acpi_wmi_get_block_method(device_t dev, const char
*guid_string, UINT8 instance,
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(guid_string))
+ 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)
@@ -602,7 +605,7 @@ acpi_wmi_set_block_method(device_t dev, const char
*guid_string, UINT8 instance,
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(guid_string))
+ 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)
@@ -636,6 +639,7 @@ acpi_wmi_set_block_method(device_t dev, const char
*guid_string, UINT8 instance,
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;
@@ -645,7 +649,7 @@ acpi_wmi_notify_handler(ACPI_HANDLE h, UINT32 notify, void
*context)
handler = NULL;
handler_data = NULL;
ACPI_SERIAL_BEGIN(acpi_wmi);
- TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ 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) {
@@ -719,7 +723,7 @@ acpi_wmi_ec_handler(UINT32 function, ACPI_PHYSICAL_ADDRESS
address,
* into wmi_info_list.
*/
static ACPI_STATUS
-acpi_wmi_read_wdg_blocks(ACPI_HANDLE h)
+acpi_wmi_read_wdg_blocks(struct acpi_wmi_softc *sc, ACPI_HANDLE h)
{
ACPI_BUFFER out = {ACPI_ALLOCATE_BUFFER, NULL};
struct guid_info *ginfo;
@@ -750,7 +754,7 @@ acpi_wmi_read_wdg_blocks(ACPI_HANDLE h)
return (AE_NO_MEMORY);
}
winfo->ginfo = ginfo[i];
- TAILQ_INSERT_TAIL(&wmi_info_list, winfo, wmi_list);
+ TAILQ_INSERT_TAIL(&sc->wmi_info_list, winfo, wmi_list);
}
AcpiOsFree(out.Pointer);
free(ginfo, M_ACPIWMI);
@@ -860,7 +864,7 @@ acpi_wmi_guid_string_to_guid(const UINT8 *guid_string, UINT8
*guid)
* Return NULL if the GUID is unknown in the _WDG
*/
static struct wmi_info*
-acpi_wmi_lookup_wmi_info_by_guid_string(const char *guid_string)
+acpi_wmi_lookup_wmi_info_by_guid_string(struct acpi_wmi_softc *sc, const char
*guid_string)
{
char guid[16];
struct wmi_info *winfo;
@@ -870,7 +874,7 @@ acpi_wmi_lookup_wmi_info_by_guid_string(const char
*guid_string)
ACPI_SERIAL_ASSERT(acpi_wmi);
if (!acpi_wmi_guid_string_to_guid(guid_string, guid)) {
- TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ TAILQ_FOREACH(winfo, &sc->wmi_info_list, wmi_list) {
if (!memcmp(winfo->ginfo.guid, guid, 16)) {
return (winfo);
}
@@ -969,7 +973,7 @@ acpi_wmi_wmistat_read(struct cdev *dev, struct uio *buf,
int flag)
sbuf_printf(&sc->wmistat_sbuf, "GUID "
" INST EXPE METH STR "
"EVENT OID\n");
- TAILQ_FOREACH(winfo, &wmi_info_list, wmi_list) {
+ 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-"
--
Andriy Gapon
_______________________________________________
freebsd-acpi@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-acpi
To unsubscribe, send any mail to "freebsd-acpi-unsubscr...@freebsd.org"
