Add ECDT (ACPI 2.0) support. This allows the EC to be enabled before the

namespace has been evaluated.  Machines with ACPI 2.0 expect this behavior
and have AML which calls EC functions early in the boot process.  If the
ECDT is not available, fall back to original probe behavior.

Other minor changes:
* Add GPE bit and GLK usage to the device announcement
* Always use the global lock in the ECDT case, but potentially downgrade to
  not using it if _GLK is 0 once the namespace is available.  This is
  announced with "Changing GLK from 1 to 0"
* Remove the acpi_object_list definitions which were earlier deprecated

Ideas from:	takawata

1 files changed, 5 insertions, 31 deletions

diff --git a/sys/dev/acpica/acpivar.h b/sys/dev/acpica/acpivar.h
index e2e5911..42ab459 100644
--- a/sys/dev/acpica/acpivar.h
+++ b/sys/dev/acpica/acpivar.h
@@ -133,37 +133,6 @@ struct acpi_device {
 #define	ACPI_INTR_APIC		1
 #define	ACPI_INTR_SAPIC		2
 
-/* XXX this is no longer referenced anywhere, remove? */
-#if 0
-/*
- * This is a cheap and nasty way to get around the horrid counted list
- * argument format that AcpiEvalateObject uses.
- */
-#define ACPI_OBJECTLIST_MAX	16
-struct acpi_object_list {
-    UINT32	count;
-    ACPI_OBJECT	*pointer[ACPI_OBJECTLIST_MAX];
-    ACPI_OBJECT	object[ACPI_OBJECTLIST_MAX];
-};
-
-static __inline struct acpi_object_list *
-acpi_AllocObjectList(int nobj)
-{
-    struct acpi_object_list	*l;
-    int				i;
-
-    if (nobj > ACPI_OBJECTLIST_MAX)
-	return(NULL);
-    if ((l = AcpiOsAllocate(sizeof(*l))) == NULL)
-	return(NULL);
-    bzero(l, sizeof(*l));
-    for (i = 0; i < ACPI_OBJECTLIST_MAX; i++)
-	l->pointer[i] = &l->object[i];
-    l->count = nobj;
-    return(l);
-}
-#endif /* unused */
-
 /*
  * Note that the low ivar values are reserved to provide
  * interface compatibility with ISA drivers which can also
@@ -376,6 +345,11 @@ extern int	acpi_battery_get_battdesc(int, struct acpi_battdesc *);
 extern int	acpi_cmbat_get_battinfo(int, struct acpi_battinfo *);
 
 /*
+ * Embedded controller.
+ */
+extern void	acpi_ec_ecdt_probe(device_t);
+
+/*
  * AC adapter interface.
  */