--- /dev/null	Fri Jun 26 08:09:33 2009
+++ new/usr/src/uts/i86pc/io/acpi/acpidev/acpidev_scope.c	Fri Jun 26 08:09:32 2009
@@ -0,0 +1,169 @@
+/*
+ * Copyright (c) 2009, Intel Corporation.
+ * All rights reserved.
+ */
+
+#include <sys/types.h>
+#include <sys/atomic.h>
+#include <sys/sunddi.h>
+#include <sys/sunndi.h>
+#include <sys/acpi/acpi.h>
+#include <sys/acpica.h>
+#include <sys/acpidev.h>
+#include <sys/acpidev_impl.h>
+
+static ACPI_STATUS acpidev_scope_probe(acpidev_walk_info_t *infop);
+static acpidev_filter_result_t acpidev_scope_filter(acpidev_walk_info_t *infop,
+    char *devname, int maxlen);
+static ACPI_STATUS acpidev_scope_init(acpidev_walk_info_t *infop);
+
+/*
+ * Default class driver for ACPI scope object.
+ * This class dirver is used to handle predefined ACPI SCOPE object
+ * under ACPI root object, such as _PR_, _SB_ and _TZ_ etc.
+ * Default policy for ACPI SCOPE object is SKIP.
+ */
+acpidev_class_t acpidev_class_scope = {
+	0,				/* adc_refcnt */
+	ACPIDEV_CLASS_REV1,		/* adc_version */
+	ACPIDEV_CLASS_ID_SCOPE,		/* adc_class_id */
+	"ACPI Scope",			/* adc_class_name */
+	ACPIDEV_TYPE_SCOPE,		/* adc_dev_type */
+	NULL,				/* adc_private */
+	NULL,				/* adc_pre_probe */
+	NULL,				/* adc_post_probe */
+	acpidev_scope_probe,		/* adc_probe */
+	acpidev_scope_filter,		/* adc_filter */
+	acpidev_scope_init,		/* adc_init */
+	NULL,				/* adc_fini */
+};
+
+acpidev_class_list_t *acpidev_class_list_scope = NULL;
+
+/*
+ * All SCOPE objects share a global pseudo unit address space across system.
+ */
+static uint32_t acpidev_scope_unitaddr = 0;
+
+/* Filter rule table for ACPI SCOPE object. */
+static acpidev_filter_rule_t acpidev_scope_filters[] = {
+	{	/* For safety, though _SB_ is hardcoded as DEVICE by acpica */
+		NULL,
+		0,
+		ACPIDEV_FILTER_SCAN,
+		&acpidev_class_list_device,
+		1,
+		1,
+		ACPIDEV_OBJECT_NAME_SB,
+		"",
+	},
+	{	/* Handle _PR_ object. */
+		NULL,
+		0,
+		ACPIDEV_FILTER_SCAN,
+		&acpidev_class_list_scope,
+		1,
+		1,
+		ACPIDEV_OBJECT_NAME_PR,
+		ACPIDEV_NODE_NAME_PROCESSOR,
+	},
+	{	/* Ignore all other scope objects. */
+		NULL,
+		0,
+		ACPIDEV_FILTER_SKIP,
+		NULL,
+		1,
+		INT_MAX,
+		NULL,
+		NULL,
+	}
+};
+
+static ACPI_STATUS
+acpidev_scope_probe(acpidev_walk_info_t *infop)
+{
+	ACPI_STATUS rc;
+	int flags;
+
+	ASSERT(infop != NULL);
+	ASSERT(infop->awi_hdl != NULL);
+	ASSERT(infop->awi_info != NULL);
+	if (infop->awi_info->Type != ACPI_TYPE_LOCAL_SCOPE) {
+		return (AE_OK);
+	}
+
+	if (infop->awi_op_type == ACPIDEV_OP_BOOT_PROBE) {
+		flags = ACPIDEV_PROCESS_FLAG_SCAN | ACPIDEV_PROCESS_FLAG_CREATE;
+		rc = acpidev_process_object(infop, flags);
+	} else if (infop->awi_op_type == ACPIDEV_OP_BOOT_REPROBE) {
+		flags = ACPIDEV_PROCESS_FLAG_SCAN;
+		rc = acpidev_process_object(infop, flags);
+	} else if (infop->awi_op_type == ACPIDEV_OP_HOTPLUG_PROBE) {
+		flags = ACPIDEV_PROCESS_FLAG_SCAN;
+		rc = acpidev_process_object(infop, flags);
+	} else {
+		ACPIDEV_DEBUG(CE_WARN,
+		    "acpidev: unknown operation type %u in scope_probe().",
+		    infop->awi_op_type);
+		rc = AE_BAD_PARAMETER;
+	}
+	if (ACPI_FAILURE(rc) && rc != AE_NOT_EXIST && rc != AE_ALREADY_EXISTS) {
+		cmn_err(CE_CONT,
+		    "?acpidev: failed to process scope object %s.\n",
+		    infop->awi_name);
+	} else {
+		rc = AE_OK;
+	}
+
+	return (rc);
+}
+
+static acpidev_filter_result_t
+acpidev_scope_filter(acpidev_walk_info_t *infop, char *devname, int maxlen)
+{
+	acpidev_filter_result_t res;
+
+	ASSERT(infop != NULL);
+	if (infop->awi_op_type == ACPIDEV_OP_BOOT_PROBE ||
+	    infop->awi_op_type == ACPIDEV_OP_BOOT_REPROBE ||
+	    infop->awi_op_type == ACPIDEV_OP_HOTPLUG_PROBE) {
+		res = acpidev_filter_device(infop, infop->awi_hdl,
+		    ACPIDEV_ARRAY_PARAM(acpidev_scope_filters),
+		    devname, maxlen);
+	} else {
+		ACPIDEV_DEBUG(CE_WARN,
+		    "acpidev: unknown operation type %u in scope_filter().",
+		    infop->awi_op_type);
+		res = ACPIDEV_FILTER_FAILED;
+	}
+
+	return (res);
+}
+
+/*ARGSUSED*/
+static ACPI_STATUS
+acpidev_scope_init(acpidev_walk_info_t *infop)
+{
+	char unitaddr[32];
+	char *compatibles[] = {
+		ACPIDEV_HID_SCOPE,
+		ACPIDEV_TYPE_SCOPE,
+		ACPIDEV_HID_VIRTNEX,
+		ACPIDEV_TYPE_VIRTNEX,
+	};
+
+	ASSERT(infop != NULL);
+	ASSERT(infop->awi_hdl != NULL);
+	ASSERT(infop->awi_dip != NULL);
+	if (ACPI_FAILURE(acpidev_set_compatibles(infop,
+	    ACPIDEV_ARRAY_PARAM(compatibles)))) {
+		return (AE_ERROR);
+	}
+	(void) snprintf(unitaddr, sizeof (unitaddr), "%u",
+	    atomic_inc_32_nv(&acpidev_scope_unitaddr) - 1);
+	if (ACPI_FAILURE(acpidev_set_unitaddr(infop, NULL, 0, unitaddr))) {
+		return (AE_ERROR);
+	}
+
+	return (AE_OK);
+}