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Diffstat (limited to 'arch/mips/include/asm/dec/kn05.h')
| -rw-r--r-- | arch/mips/include/asm/dec/kn05.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/mips/include/asm/dec/kn05.h b/arch/mips/include/asm/dec/kn05.h new file mode 100644 index 000000000..3b1524e9f --- /dev/null +++ b/arch/mips/include/asm/dec/kn05.h @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * 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, 2008 Maciej W. Rozycki + * + * 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/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 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? */ + +/* + * MB ASIC interrupt bits. + */ +#define KN4K_MB_INR_MB 4 /* ??? */ +#define KN4K_MB_INR_MT 3 /* memory, I/O bus read/write errors */ +#define KN4K_MB_INR_RES_2 2 /* unused */ +#define KN4K_MB_INR_RTC 1 /* RTC */ +#define KN4K_MB_INR_TC 0 /* I/O ASIC cascade */ + +/* + * Bits for the MB interrupt register. + * The register appears read-only. + */ +#define KN4K_MB_INT_IRQ (0x1f<<0) /* CPU Int[4:0] status. */ +#define KN4K_MB_INT_IRQ_N(n) (1<<(n)) /* Individual status bits. */ + +/* + * Bits for the MB control & status register. + * Set to 0x00bf8001 for KN05 and to 0x003f8000 for KN04 by the firmware. + */ +#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) /* CPU Int[4:0] mask */ +#define KN4K_MB_CSR_MSK_N(n) (1<<((n)+16)) /* Individual mask bits. */ +#define KN4K_MB_CSR_FW (1<<21) /* ??? */ +#define KN4K_MB_CSR_W (1<<31) /* ??? */ + +#endif /* __ASM_MIPS_DEC_KN05_H */ |