1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * include/asm-mips/dec/kn05.h 4 * 5 * DECstation/DECsystem 5000/260 (4max+ or KN05), 5000/150 (4min 6 * or KN04-BA), Personal DECstation/DECsystem 5000/50 (4maxine or 7 * KN04-CA) and DECsystem 5900/260 (KN05) R4k CPU card MB ASIC 8 * definitions. 9 * 10 * Copyright (C) 2002, 2003, 2005, 2008 Maciej W. Rozycki 11 * 12 * WARNING! All this information is pure guesswork based on the 13 * ROM. It is provided here in hope it will give someone some 14 * food for thought. No documentation for the KN05 nor the KN04 15 * module has been located so far. 16 */ 17 #ifndef __ASM_MIPS_DEC_KN05_H 18 #define __ASM_MIPS_DEC_KN05_H 19 20 #include <asm/dec/ioasic_addrs.h> 21 22 /* 23 * The oncard MB (Memory Buffer) ASIC provides an additional address 24 * decoder. Certain address ranges within the "high" 16 slots are 25 * passed to the I/O ASIC's decoder like with the KN03 or KN02-BA/CA. 26 * Others are handled locally. "Low" slots are always passed. 27 */ 28 #define KN4K_SLOT_BASE 0x1fc00000 29 30 #define KN4K_MB_ROM (0*IOASIC_SLOT_SIZE) /* KN05/KN04 card ROM */ 31 #define KN4K_IOCTL (1*IOASIC_SLOT_SIZE) /* I/O ASIC */ 32 #define KN4K_ESAR (2*IOASIC_SLOT_SIZE) /* LANCE MAC address chip */ 33 #define KN4K_LANCE (3*IOASIC_SLOT_SIZE) /* LANCE Ethernet */ 34 #define KN4K_MB_INT (4*IOASIC_SLOT_SIZE) /* MB interrupt register */ 35 #define KN4K_MB_EA (5*IOASIC_SLOT_SIZE) /* MB error address? */ 36 #define KN4K_MB_EC (6*IOASIC_SLOT_SIZE) /* MB error ??? */ 37 #define KN4K_MB_CSR (7*IOASIC_SLOT_SIZE) /* MB control & status */ 38 #define KN4K_RES_08 (8*IOASIC_SLOT_SIZE) /* unused? */ 39 #define KN4K_RES_09 (9*IOASIC_SLOT_SIZE) /* unused? */ 40 #define KN4K_RES_10 (10*IOASIC_SLOT_SIZE) /* unused? */ 41 #define KN4K_RES_11 (11*IOASIC_SLOT_SIZE) /* unused? */ 42 #define KN4K_SCSI (12*IOASIC_SLOT_SIZE) /* ASC SCSI */ 43 #define KN4K_RES_13 (13*IOASIC_SLOT_SIZE) /* unused? */ 44 #define KN4K_RES_14 (14*IOASIC_SLOT_SIZE) /* unused? */ 45 #define KN4K_RES_15 (15*IOASIC_SLOT_SIZE) /* unused? */ 46 47 /* 48 * MB ASIC interrupt bits. 49 */ 50 #define KN4K_MB_INR_MB 4 /* ??? */ 51 #define KN4K_MB_INR_MT 3 /* memory, I/O bus read/write errors */ 52 #define KN4K_MB_INR_RES_2 2 /* unused */ 53 #define KN4K_MB_INR_RTC 1 /* RTC */ 54 #define KN4K_MB_INR_TC 0 /* I/O ASIC cascade */ 55 56 /* 57 * Bits for the MB interrupt register. 58 * The register appears read-only. 59 */ 60 #define KN4K_MB_INT_IRQ (0x1f<<0) /* CPU Int[4:0] status. */ 61 #define KN4K_MB_INT_IRQ_N(n) (1<<(n)) /* Individual status bits. */ 62 63 /* 64 * Bits for the MB control & status register. 65 * Set to 0x00bf8001 for KN05 and to 0x003f8000 for KN04 by the firmware. 66 */ 67 #define KN4K_MB_CSR_PF (1<<0) /* PreFetching enable? */ 68 #define KN4K_MB_CSR_F (1<<1) /* ??? */ 69 #define KN4K_MB_CSR_ECC (0xff<<2) /* ??? */ 70 #define KN4K_MB_CSR_OD (1<<10) /* ??? */ 71 #define KN4K_MB_CSR_CP (1<<11) /* ??? */ 72 #define KN4K_MB_CSR_UNC (1<<12) /* ??? */ 73 #define KN4K_MB_CSR_IM (1<<13) /* ??? */ 74 #define KN4K_MB_CSR_NC (1<<14) /* ??? */ 75 #define KN4K_MB_CSR_EE (1<<15) /* (bus) Exception Enable? */ 76 #define KN4K_MB_CSR_MSK (0x1f<<16) /* CPU Int[4:0] mask */ 77 #define KN4K_MB_CSR_MSK_N(n) (1<<((n)+16)) /* Individual mask bits. */ 78 #define KN4K_MB_CSR_FW (1<<21) /* ??? */ 79 #define KN4K_MB_CSR_W (1<<31) /* ??? */ 80 81 #endif /* __ASM_MIPS_DEC_KN05_H */