1 /*- 2 * Copyright (c) 1982, 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)nexus.h 7.3 (Berkeley) 05/09/91 8 */ 9 10 /* 11 * Information about nexus's. 12 * 13 * Each machine has an address of backplane slots (nexi). 14 * Each nexus is some type of adapter, whose code is the low 15 * byte of the first word of the adapter address space. 16 * At boot time the system looks through the array of available 17 * slots and finds the interconnects for the machine. 18 */ 19 #define NNEXSBI 16 20 #if VAX8600 21 #define NNEX8600 NNEXSBI 22 #define NEXA8600 ((struct nexus *)(0x20000000)) 23 #define NEXB8600 ((struct nexus *)(0x22000000)) 24 #endif 25 #if VAX780 26 #define NNEX780 NNEXSBI 27 #define NEX780 ((struct nexus *)0x20000000) 28 #endif 29 #if VAX750 30 #define NNEX750 NNEXSBI 31 #define NEX750 ((struct nexus *)0xf20000) 32 #endif 33 #if VAX730 34 #define NNEX730 NNEXSBI 35 #define NEX730 ((struct nexus *)0xf20000) 36 #endif 37 #define NEXSIZE 0x2000 38 39 #if VAX8600 40 #define MAXNNEXUS (2 * NNEXSBI) 41 #else 42 #define MAXNNEXUS NNEXSBI 43 #endif 44 45 #ifndef LOCORE 46 struct nexus { 47 union nexcsr { 48 long nex_csr; 49 u_char nex_type; 50 } nexcsr; 51 long nex_pad[NEXSIZE / sizeof (long) - 1]; 52 }; 53 #ifdef KERNEL 54 struct nexus nexus[MAXNNEXUS]; 55 #endif 56 #endif 57 58 /* 59 * Bits in high word of nexus's. 60 */ 61 #define SBI_PARFLT (1<<31) /* sbi parity fault */ 62 #define SBI_WSQFLT (1<<30) /* write sequence fault */ 63 #define SBI_URDFLT (1<<29) /* unexpected read data fault */ 64 #define SBI_ISQFLT (1<<28) /* interlock sequence fault */ 65 #define SBI_MXTFLT (1<<27) /* multiple transmitter fault */ 66 #define SBI_XMTFLT (1<<26) /* transmit fault */ 67 68 #define NEX_CFGFLT (0xfc000000) 69 70 #ifndef LOCORE 71 #if defined(VAX780) || defined(VAX8600) 72 #define NEXFLT_BITS \ 73 "\20\40PARFLT\37WSQFLT\36URDFLT\35ISQFLT\34MXTFLT\33XMTFLT" 74 #endif 75 #endif 76 77 #define NEX_APD (1<<23) /* adaptor power down */ 78 #define NEX_APU (1<<22) /* adaptor power up */ 79 80 #define MBA_OT (1<<21) /* overtemperature */ 81 82 #define UBA_UBINIT (1<<18) /* unibus init */ 83 #define UBA_UBPDN (1<<17) /* unibus power down */ 84 #define UBA_UBIC (1<<16) /* unibus initialization complete */ 85 86 /* 87 * Types for nex_type. 88 */ 89 #define NEX_ANY 0 /* pseudo for handling 11/750 */ 90 #define NEX_MEM4 0x08 /* 4K chips, non-interleaved mem */ 91 #define NEX_MEM4I 0x09 /* 4K chips, interleaved mem */ 92 #define NEX_MEM16 0x10 /* 16K chips, non-interleaved mem */ 93 #define NEX_MEM16I 0x11 /* 16K chips, interleaved mem */ 94 #define NEX_MBA 0x20 /* Massbus adaptor */ 95 #define NEX_UBA0 0x28 /* Unibus adaptor */ 96 #define NEX_UBA1 0x29 /* 4 flavours for 4 addr spaces */ 97 #define NEX_UBA2 0x2a 98 #define NEX_UBA3 0x2b 99 #define NEX_DR32 0x30 /* DR32 user i'face to SBI */ 100 #define NEX_CI 0x38 /* CI adaptor */ 101 #define NEX_MPM0 0x40 /* Multi-port mem */ 102 #define NEX_MPM1 0x41 /* Who knows why 4 different ones ? */ 103 #define NEX_MPM2 0x42 104 #define NEX_MPM3 0x43 105 #define NEX_MEM64L 0x68 /* 64K chips, non-interleaved, lower */ 106 #define NEX_MEM64LI 0x69 /* 64K chips, ext-interleaved, lower */ 107 #define NEX_MEM64U 0x6a /* 64K chips, non-interleaved, upper */ 108 #define NEX_MEM64UI 0x6b /* 64K chips, ext-interleaved, upper */ 109 #define NEX_MEM64I 0x6c /* 64K chips, interleaved */ 110 #define NEX_MEM256L 0x70 /* 256K chips, non-interleaved, lower */ 111 #define NEX_MEM256LI 0x71 /* 256K chips, ext-interleaved, lower */ 112 #define NEX_MEM256U 0x72 /* 256K chips, non-interleaved, upper */ 113 #define NEX_MEM256UI 0x73 /* 256K chips, ext-interleaved, upper */ 114 #define NEX_MEM256I 0x74 /* 256K chips, interleaved */ 115