arch/mips/include/asm/sgi/gio.h

   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 */