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Annotation of Net2/arch/tahoe/vba/cyreg.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Computer Consoles Inc.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. All advertising materials mentioning features or use of this software
        !            17:  *    must display the following acknowledgement:
        !            18:  *     This product includes software developed by the University of
        !            19:  *     California, Berkeley and its contributors.
        !            20:  * 4. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)cyreg.h     7.8 (Berkeley) 6/28/90
        !            37:  */
        !            38: 
        !            39: /*
        !            40:  * Tapemaster controller definitions.
        !            41:  */
        !            42: 
        !            43: /*
        !            44:  * With 20-bit addressing, the intermediate buffer
        !            45:  * must be allocated early in startup().
        !            46:  */
        !            47: #define        CYMAXIO (64*1024)               /* max i/o size + 1 */
        !            48: char   *cybuf;
        !            49: 
        !            50: /* for byte swapping Multibus values */
        !            51: #define        htoms(x) (u_short)((((x)>>8)&0xff) | (((x)<<8)&0xff00))
        !            52: 
        !            53: #define        b_repcnt  b_bcount
        !            54: #define        b_command b_resid
        !            55: 
        !            56: /*
        !            57:  * System configuration pointer.
        !            58:  * Memory address is jumpered on controller.
        !            59:  */
        !            60: struct cyscp {
        !            61:        char    csp_buswidth;   /* system bus width */
        !            62: #define        CSP_16BITS      1       /* 16-bit system bus */
        !            63: #define        CSP_8BITS       0       /* 8-bit system bus */
        !            64:        char    csp_unused;
        !            65:        u_char  csp_scb[4];     /* point to system config block */
        !            66: };
        !            67: 
        !            68: /*
        !            69:  * System configuration block
        !            70:  */
        !            71: struct cyscb {
        !            72:        char    csb_fixed;      /* fixed value code (must be 3) */
        !            73:        char    csb_unused;     /* unused */
        !            74:        u_char  csb_ccb[4];     /* pointer to channel control block */
        !            75: };
        !            76: 
        !            77: #define        CSB_FIXED       0x3
        !            78: 
        !            79: /*
        !            80:  * Channel control block definitions
        !            81:  */
        !            82: struct cyccb {
        !            83:        char    cbcw;           /* channel control word */
        !            84:        char    cbgate;         /* tpb access gate */
        !            85:        u_char  cbtpb[4];       /* first tape parameter block */
        !            86: };
        !            87: 
        !            88: #define        GATE_OPEN       (char)(0x00)
        !            89: #define        GATE_CLOSED     (char)(0xff)
        !            90: 
        !            91: #define        CY_GO(addr)     movob((addr), 0xff)     /* channel attention */
        !            92: #define        CY_RESET(addr)  movob((addr)+1, 0xff)   /* software controller reset */
        !            93: 
        !            94: #define        CBCW_IE         0x11            /* interrupt on cmd completion */
        !            95: #define        CBCW_CLRINT     0x09            /* clear active interrupt */
        !            96: 
        !            97: /*
        !            98:  * Tape parameter block definitions
        !            99:  */
        !           100: struct cytpb {
        !           101:        u_long  tpcmd;          /* command, see below */
        !           102:        u_short tpcontrol;      /* control word */
        !           103:        u_short tpcount;        /* return count */
        !           104:        u_short tpsize;         /* buffer size */
        !           105:        u_short tprec;          /* records/overrun */
        !           106:        u_char  tpdata[4];      /* pointer to source/dest */
        !           107:        u_short tpstatus;       /* status */
        !           108:        u_char  tplink[4];      /* pointer to next parameter block */
        !           109: };
        !           110: 
        !           111: /* control field bit definitions */
        !           112: #define        CYCW_UNIT       (0x000c<<8)     /* unit select mask, 2 bit field */
        !           113: #define        CYCW_IE         (0x0020<<8)     /* interrupt enable */
        !           114: #define        CYCW_LOCK       (0x0080<<8)     /* bus lock flag */
        !           115: #define        CYCW_REV        (0x0400>>8)     /* reverse flag */
        !           116: #define        CYCW_SPEED      (0x0800>>8)     /* speed/density */
        !           117: #define            CYCW_25IPS  0
        !           118: #define            CYCW_100IPS (0x0800>>8)
        !           119: #define        CYCW_WIDTH      (0x8000>>8)     /* width */
        !           120: #define            CYCW_8BITS  0
        !           121: #define            CYCW_16BITS (0x8000>>8)
        !           122: 
        !           123: #define        CYCW_BITS       "\20\3REV\005100IPS\00716BITS\16IE\20LOCK"
        !           124: 
        !           125: /*
        !           126:  * Controller commands
        !           127:  */
        !           128: 
        !           129: /* control status/commands */
        !           130: #define        CY_CONFIG       (0x00<<24)      /* configure */
        !           131: #define        CY_NOP          (0x20<<24)      /* no operation */
        !           132: #define        CY_SETPAGE      (0x08<<24)      /* set page (addr bits 20-23) */
        !           133: #define        CY_SENSE        (0x28<<24)      /* drive status */
        !           134: #define        CY_CLRINT       (0x9c<<24)      /* clear Multibus interrupt */
        !           135: 
        !           136: /* tape position commands */
        !           137: #define        CY_REW          (0x34<<24)      /* rewind tape */
        !           138: #define        CY_OFFL         (0x38<<24)      /* off_line and unload */
        !           139: #define        CY_WEOF         (0x40<<24)      /* write end-of-file mark */
        !           140: #define        CY_SFORW        (0x70<<24)      /* space record forward */
        !           141: #define        CY_SREV         (CY_SFORW|CYCW_REV) /* space record backwards */
        !           142: #define        CY_FSF          (0x44<<24)      /* space file forward */
        !           143: #define        CY_BSF          (CY_FSF|CYCW_REV) /* space file backwards */
        !           144: #define        CY_ERASE        (0x4c<<24)      /* erase record */
        !           145: 
        !           146: /* data transfer commands */
        !           147: #define        CY_BRCOM        (0x10<<24)      /* read buffered */
        !           148: #define        CY_BWCOM        (0x14<<24)      /* write buffered */
        !           149: #define        CY_RCOM         (0x2c<<24)      /* read tape unbuffered */
        !           150: #define        CY_WCOM         (0x30<<24)      /* write tape unbuffered */
        !           151: 
        !           152: /* status field bit definitions */
        !           153: #define        CYS_WP          (0x0002<<8)     /* write protected, no write ring */
        !           154: #define        CYS_BSY         (0x0004<<8)     /* formatter busy */
        !           155: #define        CYS_RDY         (0x0008<<8)     /* drive ready */
        !           156: #define        CYS_EOT         (0x0010<<8)     /* end of tape detected */
        !           157: #define        CYS_BOT         (0x0020<<8)     /* tape is at load point */
        !           158: #define        CYS_OL          (0x0040<<8)     /* drive on_line */
        !           159: #define        CYS_FM          (0x0080<<8)     /* filemark detected */
        !           160: #define        CYS_ERR         (0x1f00>>8)     /* error value mask */
        !           161: #define        CYS_CR          (0x2000>>8)     /* controller executed retries */
        !           162: #define        CYS_CC          (0x4000>>8)     /* command completed successfully */
        !           163: #define        CYS_CE          (0x8000>>8)     /* command execution has begun */
        !           164: 
        !           165: #define        CYS_BITS "\20\6CR\7CC\10CE\12WP\13BSY\14RDY\15EOT/BOT\16BOT\17OL\20FM"
        !           166: 
        !           167: /* error codes for CYS_ERR */
        !           168: #define        CYER_TIMOUT     0x01    /* timed out data busy false */
        !           169: #define        CYER_TIMOUT1    0x02    /* data busy false,formatter,ready */
        !           170: #define        CYER_TIMOUT2    0x03    /* time out ready busy false */
        !           171: #define        CYER_TIMOUT3    0x04    /* time out ready busy true */
        !           172: #define        CYER_TIMOUT4    0x05    /* time out data busy true */
        !           173: #define        CYER_NXM        0x06    /* time out memory */
        !           174: #define        CYER_BLANK      0x07    /* blank tape */
        !           175: #define        CYER_DIAG       0x08    /* micro-diagnostic */
        !           176: #define        CYER_EOT        0x09    /* EOT forward, BOT rev. */
        !           177: #define        CYER_BOT        0x09    /* EOT forward, BOT rev. */
        !           178: #define        CYER_HERR       0x0a    /* retry unsuccessful */
        !           179: #define        CYER_FIFO       0x0b    /* FIFO over/under flow */
        !           180: #define        CYER_PARITY     0x0d    /* drive to tapemaster parity error */
        !           181: #define        CYER_CKSUM      0x0e    /* prom checksum */
        !           182: #define        CYER_STROBE     0x0f    /* time out tape strobe */
        !           183: #define        CYER_NOTRDY     0x10    /* tape not ready */
        !           184: #define        CYER_PROT       0x11    /* write, no enable ring */
        !           185: #define        CYER_JUMPER     0x13    /* missing diagnostic jumper */
        !           186: #define        CYER_LINK       0x14    /* bad link, link inappropriate */
        !           187: #define        CYER_FM         0x15    /* unexpected filemark */
        !           188: #define        CYER_PARAM      0x16    /* bad parameter, byte count ? */
        !           189: #define        CYER_HDWERR     0x18    /* unidentified hardware error */
        !           190: #define        CYER_NOSTRM     0x19    /* streaming terminated */
        !           191: 
        !           192: #ifdef CYERROR
        !           193: char   *cyerror[] = {
        !           194:        "no error",
        !           195:        "timeout",
        !           196:        "timeout1",
        !           197:        "timeout2",
        !           198:        "timeout3",
        !           199:        "timeout4", 
        !           200:        "non-existent memory",
        !           201:        "blank tape",
        !           202:        "micro-diagnostic",
        !           203:        "eot/bot detected",
        !           204:        "retry unsuccessful",
        !           205:        "fifo over/under-flow",
        !           206:        "#0xc",
        !           207:        "drive to controller parity error",
        !           208:        "prom checksum",
        !           209:        "time out tape strobe (record length error)",
        !           210:        "tape not ready",
        !           211:        "write protected",
        !           212:        "#0x12",
        !           213:        "missing diagnostic jumper",
        !           214:        "invalid link pointer",
        !           215:        "unexpected file mark",
        !           216:        "invalid byte count/parameter",
        !           217:        "#0x17",
        !           218:        "unidentified hardware error",
        !           219:        "streaming terminated"
        !           220: };
        !           221: #define        NCYERROR        (sizeof (cyerror) / sizeof (cyerror[0]))
        !           222: #endif
        !           223: 
        !           224: /*
        !           225:  * Masks defining hard and soft errors (must check against 1<<CYER_code).
        !           226:  */
        !           227: #define        CYMASK(e)       (1 << (e))
        !           228: #define        CYER_HARD       (CYMASK(CYER_TIMOUT)|CYMASK(CYER_TIMOUT1)|\
        !           229:        CYMASK(CYER_TIMOUT2)|CYMASK(CYER_TIMOUT3)|CYMASK(CYER_TIMOUT4)|\
        !           230:        CYMASK(CYER_NXM)|CYMASK(CYER_DIAG)|CYMASK(CYER_JUMPER)|\
        !           231:        CYMASK(CYER_STROBE)|CYMASK(CYER_PROT)|CYMASK(CYER_CKSUM)|\
        !           232:        CYMASK(CYER_HERR)|CYMASK(CYER_BLANK))
        !           233: #define        CYER_RSOFT      (CYMASK(CYER_FIFO)|CYMASK(CYER_NOTRDY)|\
        !           234:        CYMASK(CYER_PARITY))
        !           235: #define        CYER_WSOFT      (CYMASK(CYER_HERR)|CYMASK(CYER_FIFO)|\
        !           236:        CYMASK(CYER_NOTRDY)|CYMASK(CYER_PARITY))

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