/* $NetBSD: satapmpreg.h,v 1.6 2012/07/31 15:50:34 bouyer Exp $ */

/* $NetBSD: satapmpreg.h,v 1.6 2012/07/31 15:50:34 bouyer Exp $ */

/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden of Wasabi Systems, Inc.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#ifndef _DEV_ATA_SATAPMPREG_H_
#define _DEV_ATA_SATAPMPREG_H_

/*
* Global port multiplier registers, accessed through the control port.
*/

#define PMP_GSCR_ID 0x00 /* product and vendor id */
#define PMP_ID_DEV(x) ((x) >> 16)
#define PMP_ID_VEND(x) ((x) & 0xffff)
#define PMP_GSCR_REV 0x01 /* revision */
#define PMP_REV_SPEC_10 0x02
#define PMP_REV_SPEC_11 0x04
#define PMP_REV_LEVEL(x) (((x) >> 8) & 0xff)
#define PMP_GSCR_INF 0x02 /* info */
#define PMP_INF_NPORTS(x) ((x) & 0xf)
#define PMP_GSCR_ERR 0x20 /* error bit for each port */
#define PMP_ERR(p) ((1) << (p))
#define PMP_GSCR_ERREN 0x21 /* error bit enable for each port */
#define PMP_ERREN(p) ((1) << (p))
#define PMP_GSCR_FEAT 0x40 /* features */
#define PMP_FEAT_BIST 0x01
#define PMP_FEAT_PMREQ 0x01
#define PMP_FEAT_SCC 0x04
#define PMP_FEAT_ASYNC 0x08
#define PMP_GSCR_FEATEN 0x60 /* feature enable, bits as above */

#define PMP_GSCR_VENDSTART 0x80 /* start of vendor unique registers */

#define PMP_GSCR_NREGS 256

/*
* Port status and control registers (per port)
*/
#define PMP_PSCR_SStatus 0x00
#define PMP_PSCR_SError 0x01
#define PMP_PSCR_SControl 0x02
#define PMP_PSCR_SActive 0x03

/*
* Control port as defined in the spec.
*/
#define PMP_PORT_CTL 0x0f

/*
* Device commands for port multipliers
*/
#define PMPC_READ_PORT 0xe4
#define PMPC_WRITE_PORT 0xe8

/* max number of drives (last one being the PM itself */
#define PMP_MAX_DRIVES 16

#endif /* _DEV_ATA_SATAPMPREG_H_ */