/*      $NetBSD: pstworeg.h,v 1.1 2006/12/02 22:18:47 freza Exp $ */

/*
 * Copyright (c) 2006 Jachym Holecek
 * All rights reserved.
 *
 * Written for DFC Design, s.r.o.
 *
 * 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 AUTHOR ``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 AUTHOR 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 _VIRTEX_DEV_PSTWOREG_H_
#define _VIRTEX_DEV_PSTWOREG_H_

/*
 * PeeCee style PS2 serdes core. Doesn't save us much work, really.
 * Each instance handles one PS2 port, the user has to know if it's
 * mouse or keyboard.
 */

#define PSTWO_SIZE              0x1c

/* Deal with inconsistent notation in Xilinx datasheets. Whee. */
#define PSTWO_BIT(n)            (0x80000000U >> (n))

#define PSTWO_CTRL              0x0000          /* wo */
#define CTRL_RESET              PSTWO_BIT(7)    /* Component reset when set */

#define PSTWO_STAT              0x0004          /* ro */
#define STAT_TX_BUSY            PSTWO_BIT(6)    /* Transmitting byte */
#define STAT_RX_DONE            PSTWO_BIT(7)    /* Received a byte */

#define PSTWO_RX_DATA           0x0008          /* ro */
#define PSTWO_TX_DATA           0x000c          /* wo */
#define DATA_RECV(x)            ((x) >> 24)     /* RX */
#define DATA_SEND(x)            ((x) << 24)     /* TX */

#define PSTWO_INTR_STAT         0x0010          /* ro */
#define PSTWO_INTR_ACK          0x0014          /* wo (reads as STAT) */
#define PSTWO_INTR_MSET         0x0018          /* wo (reads as MASK) */
#define PSTWO_INTR_MCLR         0x001c          /* wo (reads as MASK) */
#define PSTWO_INTR_MASK         PSTWO_INTR_MSET

/* PSTWO_INTR_ bits */
#define INTR_RX_FULL            PSTWO_BIT(2)    /* Received byte */
#define INTR_RX_ERR             PSTWO_BIT(3)    /* Received corrupt packet */
#define INTR_RX_OVER            PSTWO_BIT(4)    /* RX overrun */
#define INTR_TX_DONE            PSTWO_BIT(5)    /* TX packet acknowledged */
#define INTR_TX_SENT            PSTWO_BIT(6)    /* TX packet sent */
#define INTR_TX_TIMO            PSTWO_BIT(7)    /* Clock lost while TX */
#define INTR_ANY                (INTR_RX_FULL | INTR_RX_ERR | INTR_RX_OVER | \
                                 INTR_TX_DONE | INTR_TX_SENT | INTR_TX_TIMO)

#endif /*_VIRTEX_DEV_PSTWOREG_H_*/