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Diffstat (limited to 'arch/mips/include/asm/sgi/gio.h')
| -rw-r--r-- | arch/mips/include/asm/sgi/gio.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/mips/include/asm/sgi/gio.h b/arch/mips/include/asm/sgi/gio.h new file mode 100644 index 00000000..889cf028 --- /dev/null +++ b/arch/mips/include/asm/sgi/gio.h @@ -0,0 +1,86 @@ +/* + * 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 */ |