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