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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * gio.h: Definitions for SGI GIO bus
7 *
8 * Copyright (C) 2002 Ladislav Michl
9 */
10
11#ifndef _SGI_GIO_H
12#define _SGI_GIO_H
13
14/*
15 * GIO bus addresses
16 *
17 * The Indigo and Indy have two GIO bus connectors. Indigo2 (all models) have
18 * three physical connectors, but only two slots, GFX and EXP0.
Ralf Baechle42a3b4f2005-09-03 15:56:17 -070019 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 * There is 10MB of GIO address space for GIO64 slot devices
21 * slot# slot type address range size
22 * ----- --------- ----------------------- -----
23 * 0 GFX 0x1f000000 - 0x1f3fffff 4MB
24 * 1 EXP0 0x1f400000 - 0x1f5fffff 2MB
25 * 2 EXP1 0x1f600000 - 0x1f9fffff 4MB
26 *
27 * There are un-slotted devices, HPC, I/O and misc devices, which are grouped
28 * into the HPC address space.
29 * - MISC 0x1fb00000 - 0x1fbfffff 1MB
30 *
31 * Following space is reserved and unused
32 * - RESERVED 0x18000000 - 0x1effffff 112MB
33 *
34 * GIO bus IDs
35 *
36 * Each GIO bus device identifies itself to the system by answering a
37 * read with an "ID" value. IDs are either 8 or 32 bits long. IDs less
38 * than 128 are 8 bits long, with the most significant 24 bits read from
39 * the slot undefined.
40 *
41 * 32-bit IDs are divided into
42 * bits 0:6 the product ID; ranges from 0x00 to 0x7F.
43 * bit 7 0=GIO Product ID is 8 bits wide
44 * 1=GIO Product ID is 32 bits wide.
45 * bits 8:15 manufacturer version for the product.
46 * bit 16 0=GIO32 and GIO32-bis, 1=GIO64.
47 * bit 17 0=no ROM present
48 * 1=ROM present on this board AND next three words
49 * space define the ROM.
50 * bits 18:31 up to manufacturer.
51 *
52 * IDs above 0x50/0xd0 are of 3rd party boards.
53 *
54 * 8-bit IDs
55 * 0x01 XPI low cost FDDI
56 * 0x02 GTR TokenRing
57 * 0x04 Synchronous ISDN
58 * 0x05 ATM board [*]
59 * 0x06 Canon Interface
60 * 0x07 16 bit SCSI Card [*]
61 * 0x08 JPEG (Double Wide)
62 * 0x09 JPEG (Single Wide)
63 * 0x0a XPI mez. FDDI device 0
64 * 0x0b XPI mez. FDDI device 1
65 * 0x0c SMPTE 259M Video [*]
66 * 0x0d Babblefish Compression [*]
67 * 0x0e E-Plex 8-port Ethernet
68 * 0x30 Lyon Lamb IVAS
69 * 0xb8 GIO 100BaseTX Fast Ethernet (gfe)
70 *
71 * [*] Device provide 32-bit ID.
72 *
73 */
74
75#define GIO_ID(x) (x & 0x7f)
76#define GIO_32BIT_ID 0x80
77#define GIO_REV(x) ((x >> 8) & 0xff)
78#define GIO_64BIT_IFACE 0x10000
79#define GIO_ROM_PRESENT 0x20000
80#define GIO_VENDOR_CODE(x) ((x >> 18) & 0x3fff)
81
82#define GIO_SLOT_GFX_BASE 0x1f000000
83#define GIO_SLOT_EXP0_BASE 0x1f400000
84#define GIO_SLOT_EXP1_BASE 0x1f600000
85
86#endif /* _SGI_GIO_H */