1 /* $OpenBSD: eisareg.h,v 1.4 1996/05/05 12:42:24 deraadt Exp $ */ 2 /* $NetBSD: eisareg.h,v 1.3 1996/04/09 22:46:13 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1995, 1996 Christopher G. Demetriou 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christopher G. Demetriou 19 * for the NetBSD Project. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef __DEV_EISA_EISAREG_H__ 36 #define __DEV_EISA_EISAREG_H__ 37 38 /* 39 * Register (etc.) descriptions for the EISA bus. 40 41 * Mostly culled from EISA chipset descriptions in: 42 * Intel Peripheral Components Databook (1992) 43 */ 44 45 /* 46 * Slot I/O space size, and I/O address of a given slot. 47 */ 48 #define EISA_SLOT_SIZE 0x1000 49 #define EISA_SLOT_ADDR(s) ((s) * EISA_SLOT_SIZE) 50 51 /* 52 * Slot offsets for important/standard registers. 53 */ 54 #define EISA_SLOTOFF_VID 0xc80 /* offset of vendor id regs */ 55 #define EISA_NVIDREGS 2 56 #define EISA_SLOTOFF_PID 0xc82 /* offset of product id regs */ 57 #define EISA_NPIDREGS 2 58 59 #ifdef AHA284X_HACK 60 /* 61 * AHA-284x (VL bus) requires priming a register with the following values. 62 */ 63 #define EISA_SLOTOFF_PRIMING EISA_SLOTOFF_VID /* offset */ 64 #define EISA_PRIMING_VID(index) (0x80 + (index)) /* value for vendor */ 65 #define EISA_PRIMING_PID(index) (0x82 + (index)) /* value for product */ 66 #endif 67 68 /* 69 * EISA ID functions, used to manipulate and decode EISA ID registers. 70 * ``Somebody was let out without adult supervision.'' 71 */ 72 73 #define EISA_IDSTRINGLEN 8 /* length of ID string, incl. NUL */ 74 75 /* 76 * Vendor ID: three characters, encoded in 16 bits. 77 * 78 * EISA_VENDID_NODEV returns true if there's no device in the slot. 79 * EISA_VENDID_IDDELAY returns true if there's a device in the slot, 80 * but that device hasn't been configured by system firmware. 81 * EISA_VENDID_n returns the "n"th character of the vendor ID. 82 */ 83 #define EISA_VENDID_NODEV(vid) \ 84 (((vid)[0] & 0x80) != 0) 85 #define EISA_VENDID_IDDELAY(vid) \ 86 (((vid)[0] & 0xf0) == 0x70) 87 #define EISA_VENDID_0(vid) \ 88 ((((vid)[0] & 0x7c) >> 2) + '@') 89 #define EISA_VENDID_1(vid) \ 90 (((((vid)[0] & 0x03) << 3) | (((vid)[1] & 0xe0) >> 5)) + '@') 91 #define EISA_VENDID_2(vid) \ 92 (((vid)[1] & 0x1f) + '@') 93 94 /* 95 * Product ID: four hex digits, encoded in 16 bits (normal, sort of). 96 * 97 * EISA_PRIDID_n returns the "n"th hex digit of the product ID. 98 */ 99 #define __EISA_HEX_MAP "0123456789ABCDEF" 100 #define EISA_PRODID_0(pid) \ 101 (__EISA_HEX_MAP[(((pid)[0] >> 4) & 0xf)]) 102 #define EISA_PRODID_1(pid) \ 103 (__EISA_HEX_MAP[(((pid)[0] >> 0) & 0xf)]) 104 #define EISA_PRODID_2(pid) \ 105 (__EISA_HEX_MAP[(((pid)[1] >> 4) & 0xf)]) 106 #define EISA_PRODID_3(pid) \ 107 (__EISA_HEX_MAP[(((pid)[1] >> 0) & 0xf)]) 108 109 #endif /* !__DEV_EISA_EISAREG_H__ */ 110