root/sys/arch/acorn32/podulebus/icsidereg.h
/*      $NetBSD: icsidereg.h,v 1.3 2002/09/15 11:00:11 bjh21 Exp $      */

/*
 * Copyright (c) 1997 Mark Brinicombe
 * Copyright (c) 1997 Causality Limited
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Mark Brinicombe
 *      for the NetBSD Project.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * 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.
 */

/*
 * Registers and address offsets for the ICS IDE card.
 */

/* ID register, read 4 consecutive words and extract ID from bit 0 */
#define ID_REGISTER_OFFSET              0x2280  /* byte offset from fast base */

#define REGISTER_SPACING_SHIFT          6
#define IDE_REGISTER_SPACE              0x200
#define AUX_REGISTER_SPACE              4
#define IRQ_REGISTER_SPACE              4
#define ID_REGISTER_SPACE               4
#define IRQ_STATUS_REGISTER_MASK        0x01

/* IDE drive registers */

#define ICSIDE_MAX_CHANNELS     2

/* ARCIN V5 registers */
#define V5_IDE_BASE                     0x2800  /* byte offset from base */
#define V5_AUX_BASE                     0x2a80  /* byte offset from base */
#define V5_IRQ_BASE                     0x0004  /* byte offset from base */
#define V5_IRQSTAT_BASE                 0x0000  /* byte offset from base */

/* ARCIN V6 registers */
#define V6_ADDRLATCH                    0x0000
#define V6_ADDRLATCH_DMACHAN            0x01 /* XXX doc is unclear, poss 0x02*/
#define V6_ADDRLATCH_EASI               0x20 /* EASI space enable */

#define V6_P_IDE_BASE                   0x2000  /* byte offset from base */
#define V6_P_AUX_BASE                   0x2380  /* byte offset from base */
#define V6_P_IRQ_BASE                   0x2200  /* byte offset from base */
#define V6_P_IRQSTAT_BASE               0x2290  /* byte offset from base */

#define V6_S_IDE_BASE                   0x3000  /* byte offset from base */
#define V6_S_AUX_BASE                   0x3380  /* byte offset from base */
#define V6_S_IRQ_BASE                   0x3200  /* byte offset from base */
#define V6_S_IRQSTAT_BASE               0x3290  /* byte offset from base */