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/* $OpenBSD: eisareg.h,v 1.4 1996/05/05 12:42:24 deraadt Exp $ */
/* $NetBSD: eisareg.h,v 1.3 1996/04/09 22:46:13 cgd Exp $ */
/*
* Copyright (c) 1995, 1996 Christopher G. Demetriou
* All rights reserved.
*
* 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 Christopher G. Demetriou
* 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.
*/
#ifndef __DEV_EISA_EISAREG_H__
#define __DEV_EISA_EISAREG_H__
/*
* Register (etc.) descriptions for the EISA bus.
* Mostly culled from EISA chipset descriptions in:
* Intel Peripheral Components Databook (1992)
*/
/*
* Slot I/O space size, and I/O address of a given slot.
*/
#define EISA_SLOT_SIZE 0x1000
#define EISA_SLOT_ADDR(s) ((s) * EISA_SLOT_SIZE)
/*
* Slot offsets for important/standard registers.
*/
#define EISA_SLOTOFF_VID 0xc80 /* offset of vendor id regs */
#define EISA_NVIDREGS 2
#define EISA_SLOTOFF_PID 0xc82 /* offset of product id regs */
#define EISA_NPIDREGS 2
#ifdef AHA284X_HACK
/*
* AHA-284x (VL bus) requires priming a register with the following values.
*/
#define EISA_SLOTOFF_PRIMING EISA_SLOTOFF_VID /* offset */
#define EISA_PRIMING_VID(index) (0x80 + (index)) /* value for vendor */
#define EISA_PRIMING_PID(index) (0x82 + (index)) /* value for product */
#endif
/*
* EISA ID functions, used to manipulate and decode EISA ID registers.
* ``Somebody was let out without adult supervision.''
*/
#define EISA_IDSTRINGLEN 8 /* length of ID string, incl. NUL */
/*
* Vendor ID: three characters, encoded in 16 bits.
*
* EISA_VENDID_NODEV returns true if there's no device in the slot.
* EISA_VENDID_IDDELAY returns true if there's a device in the slot,
* but that device hasn't been configured by system firmware.
* EISA_VENDID_n returns the "n"th character of the vendor ID.
*/
#define EISA_VENDID_NODEV(vid) \
(((vid)[0] & 0x80) != 0)
#define EISA_VENDID_IDDELAY(vid) \
(((vid)[0] & 0xf0) == 0x70)
#define EISA_VENDID_0(vid) \
((((vid)[0] & 0x7c) >> 2) + '@')
#define EISA_VENDID_1(vid) \
(((((vid)[0] & 0x03) << 3) | (((vid)[1] & 0xe0) >> 5)) + '@')
#define EISA_VENDID_2(vid) \
(((vid)[1] & 0x1f) + '@')
/*
* Product ID: four hex digits, encoded in 16 bits (normal, sort of).
*
* EISA_PRIDID_n returns the "n"th hex digit of the product ID.
*/
#define __EISA_HEX_MAP "0123456789ABCDEF"
#define EISA_PRODID_0(pid) \
(__EISA_HEX_MAP[(((pid)[0] >> 4) & 0xf)])
#define EISA_PRODID_1(pid) \
(__EISA_HEX_MAP[(((pid)[0] >> 0) & 0xf)])
#define EISA_PRODID_2(pid) \
(__EISA_HEX_MAP[(((pid)[1] >> 4) & 0xf)])
#define EISA_PRODID_3(pid) \
(__EISA_HEX_MAP[(((pid)[1] >> 0) & 0xf)])
#endif /* !__DEV_EISA_EISAREG_H__ */
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