FreeBSD/Linux Kernel Cross Reference
sys/dev/eisa/eisareg.h
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__ */
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