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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* gio.h: Definitions for SGI GIO bus
*
* Copyright (C) 2002 Ladislav Michl
*/
#ifndef _SGI_GIO_H
#define _SGI_GIO_H
/*
* GIO bus addresses
*
* The Indigo and Indy have two GIO bus connectors. Indigo2 (all models) have
* three physical connectors, but only two slots, GFX and EXP0.
*
* There is 10MB of GIO address space for GIO64 slot devices
* slot# slot type address range size
* ----- --------- ----------------------- -----
* 0 GFX 0x1f000000 - 0x1f3fffff 4MB
* 1 EXP0 0x1f400000 - 0x1f5fffff 2MB
* 2 EXP1 0x1f600000 - 0x1f9fffff 4MB
*
* There are un-slotted devices, HPC, I/O and misc devices, which are grouped
* into the HPC address space.
* - MISC 0x1fb00000 - 0x1fbfffff 1MB
*
* Following space is reserved and unused
* - RESERVED 0x18000000 - 0x1effffff 112MB
*
* GIO bus IDs
*
* Each GIO bus device identifies itself to the system by answering a
* read with an "ID" value. IDs are either 8 or 32 bits long. IDs less
* than 128 are 8 bits long, with the most significant 24 bits read from
* the slot undefined.
*
* 32-bit IDs are divided into
* bits 0:6 the product ID; ranges from 0x00 to 0x7F.
* bit 7 0=GIO Product ID is 8 bits wide
* 1=GIO Product ID is 32 bits wide.
* bits 8:15 manufacturer version for the product.
* bit 16 0=GIO32 and GIO32-bis, 1=GIO64.
* bit 17 0=no ROM present
* 1=ROM present on this board AND next three words
* space define the ROM.
* bits 18:31 up to manufacturer.
*
* IDs above 0x50/0xd0 are of 3rd party boards.
*
* 8-bit IDs
* 0x01 XPI low cost FDDI
* 0x02 GTR TokenRing
* 0x04 Synchronous ISDN
* 0x05 ATM board [*]
* 0x06 Canon Interface
* 0x07 16 bit SCSI Card [*]
* 0x08 JPEG (Double Wide)
* 0x09 JPEG (Single Wide)
* 0x0a XPI mez. FDDI device 0
* 0x0b XPI mez. FDDI device 1
* 0x0c SMPTE 259M Video [*]
* 0x0d Babblefish Compression [*]
* 0x0e E-Plex 8-port Ethernet
* 0x30 Lyon Lamb IVAS
* 0xb8 GIO 100BaseTX Fast Ethernet (gfe)
*
* [*] Device provide 32-bit ID.
*
*/
#define GIO_ID(x) (x & 0x7f)
#define GIO_32BIT_ID 0x80
#define GIO_REV(x) ((x >> 8) & 0xff)
#define GIO_64BIT_IFACE 0x10000
#define GIO_ROM_PRESENT 0x20000
#define GIO_VENDOR_CODE(x) ((x >> 18) & 0x3fff)
#define GIO_SLOT_GFX_BASE 0x1f000000
#define GIO_SLOT_EXP0_BASE 0x1f400000
#define GIO_SLOT_EXP1_BASE 0x1f600000
#endif /* _SGI_GIO_H */
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