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Annotation of researchv9/sys.vax/h/nexus.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Information about nexus's.
        !             3:  *
        !             4:  * Each machine has an address of backplane slots (nexi).
        !             5:  * Each nexus is some type of adapter, whose code is the low
        !             6:  * byte of the first word of the adapter address space.
        !             7:  * At boot time the system looks through the array of available
        !             8:  * slots and finds the interconnects for the machine.
        !             9:  *
        !            10:  * We stretch this a little for MicroVAX-II. It has a local register
        !            11:  * space for the toy, q-bus map registers and other goodies. Because
        !            12:  * these things are similar in concept to adapters we use this space 
        !            13:  * to map them in also.
        !            14:  */
        !            15: #if VAX780
        !            16: #define        NNEX780 16
        !            17: #define        NEX780  ((struct nexus *)0x20000000)
        !            18: #endif
        !            19: #if VAX750
        !            20: #define        NNEX750 16
        !            21: #define        NEX750  ((struct nexus *)0xf20000)
        !            22: #endif
        !            23: #if VAX7ZZ
        !            24: #define        NNEX7ZZ 16
        !            25: #define        NEX7ZZ  ((struct nexus *)0xf20000)
        !            26: #endif
        !            27: #ifdef MVAX
        !            28: #define        NNEXMVAX        1
        !            29: #define NEXMVAX                ((struct nexus *)0x20080000)
        !            30: #endif
        !            31: 
        !            32: #define        MAXNNEXUS 16
        !            33: 
        !            34: #if defined(VAX780) || defined(VAX750) || defined(VAX7ZZ)
        !            35: #define        NEXSIZE 0x2000
        !            36: #else
        !            37: #define NEXSIZE        0x40000
        !            38: #endif
        !            39: 
        !            40: #ifndef LOCORE
        !            41: struct nexus {
        !            42:        union nexcsr {
        !            43:                long    nex_csr;
        !            44:                u_char  nex_type;
        !            45:        } nexcsr;
        !            46:        long    nex_pad[NEXSIZE / sizeof (long) - 1];
        !            47: };
        !            48: #ifdef KERNEL
        !            49: struct nexus nexus[MAXNNEXUS];
        !            50: #endif
        !            51: #endif
        !            52: 
        !            53: /*
        !            54:  * Bits in high word of nexus's.
        !            55:  */
        !            56: #define        SBI_PARFLT      (1<<31)         /* sbi parity fault */
        !            57: #define        SBI_WSQFLT      (1<<30)         /* write sequence fault */
        !            58: #define        SBI_URDFLT      (1<<29)         /* unexpected read data fault */
        !            59: #define        SBI_ISQFLT      (1<<28)         /* interlock sequence fault */
        !            60: #define        SBI_MXTFLT      (1<<27)         /* multiple transmitter fault */
        !            61: #define        SBI_XMTFLT      (1<<26)         /* transmit fault */
        !            62: 
        !            63: #define        NEX_CFGFLT      (0xfc000000)
        !            64: 
        !            65: #ifndef LOCORE
        !            66: #if VAX780
        !            67: #define        NEXFLT_BITS \
        !            68: "\20\40PARFLT\37WSQFLT\36URDFLT\35ISQFLT\34MXTFLT\33XMTFLT"
        !            69: #endif
        !            70: #endif
        !            71: 
        !            72: #define        NEX_APD         (1<<23)         /* adaptor power down */
        !            73: #define        NEX_APU         (1<<22)         /* adaptor power up */
        !            74: 
        !            75: #define        MBA_OT          (1<<21)         /* overtemperature */
        !            76: 
        !            77: #define        UBA_UBINIT      (1<<18)         /* unibus init */
        !            78: #define        UBA_UBPDN       (1<<17)         /* unibus power down */
        !            79: #define        UBA_UBIC        (1<<16)         /* unibus initialization complete */
        !            80: 
        !            81: /*
        !            82:  * Types for nex_type.
        !            83:  */
        !            84: #define        NEX_ANY         0               /* pseudo for handling 11/750 */
        !            85: #define        NEX_MEM4        0x08            /* 4K chips, non-interleaved mem */
        !            86: #define        NEX_MEM4I       0x09            /* 4K chips, interleaved mem */
        !            87: #define        NEX_MEM16       0x10            /* 16K chips, non-interleaved mem */
        !            88: #define        NEX_MEM16I      0x11            /* 16K chips, interleaved mem */
        !            89: #define        NEX_MBA         0x20            /* Massbus adaptor */
        !            90: #define        NEX_UBA0        0x28            /* Unibus adaptor */
        !            91: #define        NEX_UBA1        0x29            /* 4 flavours for 4 addr spaces */
        !            92: #define        NEX_UBA2        0x2a
        !            93: #define        NEX_UBA3        0x2b
        !            94: #define        NEX_DR32        0x30            /* DR32 user i'face to SBI */
        !            95: #define        NEX_MPM0        0x40            /* Multi-port mem */
        !            96: #define        NEX_MPM1        0x41            /* Who knows why 4 different ones ? */
        !            97: #define        NEX_MPM2        0x42
        !            98: #define        NEX_MPM3        0x43
        !            99: #define NEX_Q22                0xfd            /* Fudge an adapter type for MicroVAX */

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