100 lines
3.7 KiB
C
100 lines
3.7 KiB
C
/* $NetBSD: eisareg.h,v 1.6 2005/05/17 04:14:57 christos Exp $ */
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/*
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* Copyright (c) 1995, 1996 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __DEV_EISA_EISAREG_H__
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#define __DEV_EISA_EISAREG_H__
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/*
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* Register (etc.) descriptions for the EISA bus.
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*
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* Mostly culled from EISA chipset descriptions in:
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* Intel Peripheral Components Databook (1992)
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*/
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/*
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* Slot I/O space size, and I/O address of a given slot.
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*/
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#define EISA_SLOT_SIZE 0x1000
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#define EISA_SLOT_ADDR(s) ((s) * EISA_SLOT_SIZE)
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/*
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* Slot offsets for important/standard registers.
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*/
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#define EISA_SLOTOFF_VID 0xc80 /* offset of vendor id regs */
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#define EISA_NVIDREGS 2
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#define EISA_SLOTOFF_PID 0xc82 /* offset of product id regs */
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#define EISA_NPIDREGS 2
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/*
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* EISA ID functions, used to manipulate and decode EISA ID registers.
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* ``Somebody was let out without adult supervision.''
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*/
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#define EISA_IDSTRINGLEN 8 /* length of ID string, incl. NUL */
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/*
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* Vendor ID: three characters, encoded in 16 bits.
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*
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* EISA_VENDID_NODEV returns true if there's no device in the slot.
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* EISA_VENDID_IDDELAY returns true if there's a device in the slot,
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* but that device hasn't been configured by system firmware.
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* EISA_VENDID_n returns the "n"th character of the vendor ID.
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*/
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#define EISA_VENDID_NODEV(vid) \
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(((vid)[0] & 0x80) != 0)
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#define EISA_VENDID_IDDELAY(vid) \
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(((vid)[0] & 0xf0) == 0x70)
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#define EISA_VENDID_0(vid) \
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((((vid)[0] & 0x7c) >> 2) + '@')
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#define EISA_VENDID_1(vid) \
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(((((vid)[0] & 0x03) << 3) | (((vid)[1] & 0xe0) >> 5)) + '@')
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#define EISA_VENDID_2(vid) \
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(((vid)[1] & 0x1f) + '@')
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/*
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* Product ID: four hex digits, encoded in 16 bits (normal, sort of).
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*
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* EISA_PRIDID_n returns the "n"th hex digit of the product ID.
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*/
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#define EISA_PRODID_0(pid) \
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(HEXDIGITS[(((pid)[0] >> 4) & 0xf)])
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#define EISA_PRODID_1(pid) \
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(HEXDIGITS[(((pid)[0] >> 0) & 0xf)])
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#define EISA_PRODID_2(pid) \
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(HEXDIGITS[(((pid)[1] >> 4) & 0xf)])
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#define EISA_PRODID_3(pid) \
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(HEXDIGITS[(((pid)[1] >> 0) & 0xf)])
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#endif /* !__DEV_EISA_EISAREG_H__ */
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