projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 2693ab1f C |
1 | /* nexus.h 4.10 81/04/03 */ |
| 2 | ||
| 3 | /* | |
| 4 | * Information about nexus's. | |
| 5 | * | |
| 6 | * Each machine has an address of backplane slots (nexi). | |
| 7 | * Each nexus is some type of adapter, whose code is the low | |
| 8 | * byte of the first word of the adapter address space. | |
| 9 | * At boot time the system looks through the array of available | |
| 10 | * slots and finds the interconnects for the machine. | |
| 11 | */ | |
| 12 | #if VAX780 | |
| 13 | #define NNEX780 16 | |
| 14 | #define NEX780 ((struct nexus *)0x20000000) | |
| 15 | #endif | |
| 16 | #if VAX750 | |
| 17 | #define NNEX750 16 | |
| 18 | #define NEX750 ((struct nexus *)0xf20000) | |
| 19 | #endif | |
| 20 | #if VAX7ZZ | |
| 21 | #define NNEX7ZZ 16 | |
| 22 | #define NEX7ZZ ((struct nexus *)0xf20000) | |
| 23 | #endif | |
| 24 | #define NEXSIZE 0x2000 | |
| 25 | ||
| 26 | #define MAXNNEXUS 16 | |
| 27 | ||
| 28 | #ifndef LOCORE | |
| 29 | struct nexus { | |
| 30 | union nexcsr { | |
| 31 | long nex_csr; | |
| 32 | u_char nex_type; | |
| 33 | } nexcsr; | |
| 34 | long nex_pad[NEXSIZE / sizeof (long) - 1]; | |
| 35 | }; | |
| 36 | #ifdef KERNEL | |
| 37 | struct nexus nexus[MAXNNEXUS]; | |
| 38 | #endif | |
| 39 | #endif | |
| 40 | ||
| 41 | /* | |
| 42 | * Bits in high word of nexus's. | |
| 43 | */ | |
| 44 | #define SBI_PARFLT (1<<31) /* sbi parity fault */ | |
| 45 | #define SBI_WSQFLT (1<<30) /* write sequence fault */ | |
| 46 | #define SBI_URDFLT (1<<29) /* unexpected read data fault */ | |
| 47 | #define SBI_ISQFLT (1<<28) /* interlock sequence fault */ | |
| 48 | #define SBI_MXTFLT (1<<27) /* multiple transmitter fault */ | |
| 49 | #define SBI_XMTFLT (1<<26) /* transmit fault */ | |
| 50 | ||
| 51 | #define NEX_CFGFLT (0xfc000000) | |
| 52 | ||
| 53 | #ifndef LOCORE | |
| 54 | #if VAX780 | |
| 55 | #define NEXFLT_BITS \ | |
| 56 | "\20\40PARFLT\37WSQFLT\36URDFLT\35ISQFLT\34MXTFLT\33XMTFLT" | |
| 57 | #endif | |
| 58 | #endif | |
| 59 | ||
| 60 | #define NEX_APD (1<<23) /* adaptor power down */ | |
| 61 | #define NEX_APU (1<<22) /* adaptor power up */ | |
| 62 | ||
| 63 | #define MBA_OT (1<<21) /* overtemperature */ | |
| 64 | ||
| 65 | #define UBA_UBINIT (1<<18) /* unibus init */ | |
| 66 | #define UBA_UBPDN (1<<17) /* unibus power down */ | |
| 67 | #define UBA_UBIC (1<<16) /* unibus initialization complete */ | |
| 68 | ||
| 69 | /* | |
| 70 | * Types for nex_type. | |
| 71 | */ | |
| 72 | #define NEX_ANY 0 /* pseudo for handling 11/750 */ | |
| 73 | #define NEX_MEM4 0x08 /* 4K chips, non-interleaved mem */ | |
| 74 | #define NEX_MEM4I 0x09 /* 4K chips, interleaved mem */ | |
| 75 | #define NEX_MEM16 0x10 /* 16K chips, non-interleaved mem */ | |
| 76 | #define NEX_MEM16I 0x11 /* 16K chips, interleaved mem */ | |
| 77 | #define NEX_MBA 0x20 /* Massbus adaptor */ | |
| 78 | #define NEX_UBA0 0x28 /* Unibus adaptor */ | |
| 79 | #define NEX_UBA1 0x29 /* 4 flavours for 4 addr spaces */ | |
| 80 | #define NEX_UBA2 0x2a | |
| 81 | #define NEX_UBA3 0x2b | |
| 82 | #define NEX_DR32 0x30 /* DR32 user i'face to SBI */ | |
| 83 | #define NEX_MPM0 0x40 /* Multi-port mem */ | |
| 84 | #define NEX_MPM1 0x41 /* Who knows why 4 different ones ? */ | |
| 85 | #define NEX_MPM2 0x42 | |
| 86 | #define NEX_MPM3 0x43 |