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gio.h
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1 /*
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.
19  *
20  * 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 */