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Annotation of 42BSD/sys/vax/nexus.h, revision 1.1.1.1

1.1       root        1: /*     nexus.h 6.1     83/08/01        */
                      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 VAX730
                     21: #define        NNEX730 16
                     22: #define        NEX730  ((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_CI          0x38            /* CI adaptor */
                     84: #define        NEX_MPM0        0x40            /* Multi-port mem */
                     85: #define        NEX_MPM1        0x41            /* Who knows why 4 different ones ? */
                     86: #define        NEX_MPM2        0x42
                     87: #define        NEX_MPM3        0x43
                     88: #define        NEX_MEM64L      0x68            /* 64K chips, non-interleaved, lower */
                     89: #define        NEX_MEM64LI     0x69            /* 64K chips, ext-interleaved, lower */
                     90: #define        NEX_MEM64U      0x6a            /* 64K chips, non-interleaved, upper */
                     91: #define        NEX_MEM64UI     0x6b            /* 64K chips, ext-interleaved, upper */
                     92: #define        NEX_MEM64I      0x6c            /* 64K chips, interleaved */

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