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/*
* include/asm-mips/dec/kn05.h
*
* DECstation/DECsystem 5000/260 (4max+ or KN05), 5000/150 (4min
* or KN04-BA), Personal DECstation/DECsystem 5000/50 (4maxine or
* KN04-CA) and DECsystem 5900/260 (KN05) R4k CPU card MB ASIC
* definitions.
*
* Copyright (C) 2002, 2003, 2005 Maciej W. Rozycki
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* WARNING! All this information is pure guesswork based on the
* ROM. It is provided here in hope it will give someone some
* food for thought. No documentation for the KN05 nor the KN04
* module has been located so far.
*/
#ifndef __ASM_MIPS_DEC_KN05_H
#define __ASM_MIPS_DEC_KN05_H
#include <asm/addrspace.h>
#include <asm/dec/ioasic_addrs.h>
/*
* The oncard MB (Memory Buffer) ASIC provides an additional address
* decoder. Certain address ranges within the "high" 16 slots are
* passed to the I/O ASIC's decoder like with the KN03 or KN02-BA/CA.
* Others are handled locally. "Low" slots are always passed.
*/
#define KN4K_SLOT_BASE KSEG1ADDR(0x1fc00000)
#define KN4K_MB_ROM (0*IOASIC_SLOT_SIZE) /* KN05/KN04 card ROM */
#define KN4K_IOCTL (1*IOASIC_SLOT_SIZE) /* I/O ASIC */
#define KN4K_ESAR (2*IOASIC_SLOT_SIZE) /* LANCE MAC address chip */
#define KN4K_LANCE (3*IOASIC_SLOT_SIZE) /* LANCE Ethernet */
#define KN4K_MB_INT (4*IOASIC_SLOT_SIZE) /* MB interrupt register */
#define KN4K_MB_EA (5*IOASIC_SLOT_SIZE) /* MB error address? */
#define KN4K_MB_EC (6*IOASIC_SLOT_SIZE) /* MB error ??? */
#define KN4K_MB_CSR (7*IOASIC_SLOT_SIZE) /* MB control & status */
#define KN4K_RES_08 (8*IOASIC_SLOT_SIZE) /* unused? */
#define KN4K_RES_09 (9*IOASIC_SLOT_SIZE) /* unused? */
#define KN4K_RES_10 (10*IOASIC_SLOT_SIZE) /* unused? */
#define KN4K_RES_11 (11*IOASIC_SLOT_SIZE) /* unused? */
#define KN4K_SCSI (12*IOASIC_SLOT_SIZE) /* ASC SCSI */
#define KN4K_RES_13 (13*IOASIC_SLOT_SIZE) /* unused? */
#define KN4K_RES_14 (14*IOASIC_SLOT_SIZE) /* unused? */
#define KN4K_RES_15 (15*IOASIC_SLOT_SIZE) /* unused? */
/*
* Bits for the MB interrupt register.
* The register appears read-only.
*/
#define KN4K_MB_INT_TC (1<<0) /* TURBOchannel? */
#define KN4K_MB_INT_RTC (1<<1) /* RTC? */
#define KN4K_MB_INT_MT (1<<3) /* ??? */
/*
* Bits for the MB control & status register.
* Set to 0x00bf8001 on my system by the ROM.
*/
#define KN4K_MB_CSR_PF (1<<0) /* PreFetching enable? */
#define KN4K_MB_CSR_F (1<<1) /* ??? */
#define KN4K_MB_CSR_ECC (0xff<<2) /* ??? */
#define KN4K_MB_CSR_OD (1<<10) /* ??? */
#define KN4K_MB_CSR_CP (1<<11) /* ??? */
#define KN4K_MB_CSR_UNC (1<<12) /* ??? */
#define KN4K_MB_CSR_IM (1<<13) /* ??? */
#define KN4K_MB_CSR_NC (1<<14) /* ??? */
#define KN4K_MB_CSR_EE (1<<15) /* (bus) Exception Enable? */
#define KN4K_MB_CSR_MSK (0x1f<<16) /* ??? */
#define KN4K_MB_CSR_FW (1<<21) /* ??? */
#endif /* __ASM_MIPS_DEC_KN05_H */
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