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diff --git a/usr/src/uts/sun4v/sys/cnex.h b/usr/src/uts/sun4v/sys/cnex.h
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+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _CNEX_H
+#define _CNEX_H
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Channel nexus "reg" spec
+ */
+typedef struct cnex_regspec {
+ uint64_t physaddr;
+ uint64_t size;
+} cnex_regspec_t;
+
+/*
+ * Channel nexus interrupt map
+ */
+struct cnex_pil_map {
+ ldc_dev_t devclass; /* LDC device class */
+ uint32_t pil; /* PIL for device class */
+};
+
+/*
+ * Channel interrupt information
+ */
+typedef struct cnex_intr {
+ uint64_t ino; /* dev intr number */
+ uint64_t icookie; /* dev intr cookie */
+ uint_t (*hdlr)(); /* intr handler */
+ caddr_t arg1; /* intr argument 1 */
+ caddr_t arg2; /* intr argument 2 */
+ void *ssp; /* back ptr to soft state */
+} cnex_intr_t;
+
+/* cnex interrupt types */
+typedef enum {
+ CNEX_TX_INTR = 1, /* transmit interrupt */
+ CNEX_RX_INTR /* receive interrupt */
+} cnex_intrtype_t;
+
+/*
+ * Channel information
+ */
+typedef struct cnex_ldc {
+ kmutex_t lock; /* Channel lock */
+ struct cnex_ldc *next;
+
+ uint64_t id;
+ ldc_dev_t devclass; /* Device class channel belongs to */
+
+ cnex_intr_t tx; /* Transmit interrupt */
+ cnex_intr_t rx; /* Receive interrupt */
+} cnex_ldc_t;
+
+/*
+ * Channel nexus soft state pointer
+ */
+typedef struct cnex_soft_state {
+ dev_info_t *devi;
+ uint64_t cfghdl; /* cnex config handle */
+ kmutex_t clist_lock; /* lock to protect channel list */
+ cnex_ldc_t *clist; /* list of registered channels */
+} cnex_soft_state_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _CNEX_H */