projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 5eaa5c61 BJ |
1 | /* |
| 2 | * RK7 disk driver | |
| 3 | */ | |
| 4 | ||
| 5 | #include "../h/param.h" | |
| 6 | #include "../h/systm.h" | |
| 7 | #include "../h/buf.h" | |
| 8 | #include "../h/conf.h" | |
| 9 | #include "../h/dir.h" | |
| 10 | #include "../h/user.h" | |
| 11 | #include "../h/uba.h" | |
| 12 | ||
| 13 | #define RK7ADDR ((struct rk7_regs *)( UBA0_DEV + 0177440)) | |
| 14 | #define ERR_CNT 10 | |
| 15 | #define NRK7 8 | |
| 16 | #define NRK7BLK 53790 | |
| 17 | #define FORMAT_22 0 | |
| 18 | #define RESET 0102000 | |
| 19 | #define WCOM 022 | |
| 20 | #define RCOM 020 | |
| 21 | #define RK07 02000 | |
| 22 | #define GO 01 | |
| 23 | #define RELEASE 010 | |
| 24 | #define IENABLE 0000100 | |
| 25 | #define CTLRDY 0200 | |
| 26 | #define PACKAK 000003 /* Pack Acknowledge */ | |
| 27 | ||
| 28 | ||
| 29 | struct rk7_regs | |
| 30 | { | |
| 31 | short rk7cs1; | |
| 32 | short rk7wc; | |
| 33 | unsigned short rk7ba; | |
| 34 | short rk7da; | |
| 35 | short rk7cs2; | |
| 36 | short rk7ds; | |
| 37 | short rk7er; | |
| 38 | short rk7asof; | |
| 39 | short rk7dc; | |
| 40 | short rk7null; | |
| 41 | short rk7db; | |
| 42 | short rk7mr1; | |
| 43 | short rk7ecps; | |
| 44 | short rk7ecpt; | |
| 45 | short rk7mr2; | |
| 46 | short rk7mr3; | |
| 47 | }; | |
| 48 | ||
| 49 | struct buf rk7tab; | |
| 50 | struct buf rrk7buf; | |
| 51 | ||
| 52 | int rk7_ubinfo; | |
| 53 | ||
| 54 | rk7strategy(bp) | |
| 55 | register struct buf *bp; | |
| 56 | { | |
| 57 | ||
| 58 | if (bp->b_blkno >= NRK7BLK) { | |
| 59 | bp->b_flags |= B_ERROR; | |
| 60 | iodone(bp); | |
| 61 | return; | |
| 62 | } | |
| 63 | bp->av_forw = (struct buf *)NULL; | |
| 64 | spl5(); | |
| 65 | if(rk7tab.b_actf == NULL) | |
| 66 | rk7tab.b_actf = bp; | |
| 67 | else | |
| 68 | rk7tab.b_actl->av_forw = bp; | |
| 69 | rk7tab.b_actl = bp; | |
| 70 | if(rk7tab.b_active == NULL) | |
| 71 | rk7start(); | |
| 72 | spl0(); | |
| 73 | } | |
| 74 | ||
| 75 | rk7start() | |
| 76 | { | |
| 77 | register struct buf *bp; | |
| 78 | register short com; | |
| 79 | daddr_t bn; | |
| 80 | short dn, cn, sn, tn; | |
| 81 | ||
| 82 | if ((bp = rk7tab.b_actf) == NULL) | |
| 83 | return; | |
| 84 | rk7tab.b_active++; | |
| 85 | rk7_ubinfo = ubasetup( bp, 1 ); | |
| 86 | bn = bp->b_blkno; | |
| 87 | dn = minor(bp->b_dev); | |
| 88 | cn = bn/66; | |
| 89 | sn = bn%22; | |
| 90 | tn = (bn / 22) % 3; | |
| 91 | /* | |
| 92 | printf("in start bn = %d dn = %d cn = %d sn = %d tn = %d\n",bn,dn,cn,sn,tn); | |
| 93 | */ | |
| 94 | RK7ADDR -> rk7cs2 = dn; | |
| 95 | RK7ADDR -> rk7cs1 = PACKAK | RK07; | |
| 96 | while(RK7ADDR->rk7cs1 & 01); | |
| 97 | ||
| 98 | RK7ADDR -> rk7da = sn | (tn << 8); | |
| 99 | RK7ADDR -> rk7dc = cn; | |
| 100 | RK7ADDR->rk7ba = rk7_ubinfo; | |
| 101 | RK7ADDR->rk7wc = -(bp->b_bcount>>1); | |
| 102 | ||
| 103 | com = ((rk7_ubinfo & 0x30000) >> 8 ) | IENABLE | RK07 | GO | ( FORMAT_22<< 12); | |
| 104 | if(bp->b_flags & B_READ) | |
| 105 | com |= RCOM; else | |
| 106 | com |= WCOM; | |
| 107 | RK7ADDR->rk7cs1 = com; | |
| 108 | /* | |
| 109 | printf("cs1 in start = %d(bit15) %o(remainder)\n",(RK7ADDR->rk7cs1>>15)&01,RK7ADDR->rk7cs1 & 077777); | |
| 110 | */ | |
| 111 | } | |
| 112 | ||
| 113 | rk7intr() | |
| 114 | { | |
| 115 | register struct buf *bp; | |
| 116 | ||
| 117 | ||
| 118 | /* | |
| 119 | printf("in intr->rk7ds = %d(bit 15) %o(remainder)",(RK7ADDR->rk7ds>>15)&01,RK7ADDR->rk7ds & 077777); | |
| 120 | printf("cs1 = %d(bit 15) %o(remainder)\n",(RK7ADDR->rk7cs1>>15)&01,RK7ADDR->rk7cs1 & 077777); | |
| 121 | */ | |
| 122 | if (rk7tab.b_active == NULL) | |
| 123 | return; | |
| 124 | bp = rk7tab.b_actf; | |
| 125 | rk7tab.b_active = NULL; | |
| 126 | while(RK7ADDR->rk7ds >= 0); | |
| 127 | /* | |
| 128 | printf("rk7ds = %o(bit 15) %o\n",(RK7ADDR -> rk7ds >> 15) & 01,RK7ADDR -> rk7ds & 077777); | |
| 129 | printf("after ready wait, cs1 = %d (bit 15) %o (remainder)\n",(RK7ADDR->rk7cs1>>15)&01,RK7ADDR->rk7cs1&077777); | |
| 130 | */ | |
| 131 | ||
| 132 | if (RK7ADDR->rk7cs1 < 0) { /* error bit */ | |
| 133 | deverror(bp, RK7ADDR->rk7er, RK7ADDR->rk7cs2); | |
| 134 | printf("err reg = %o octal\n",RK7ADDR->rk7er); | |
| 135 | RK7ADDR->rk7cs1 = RESET|GO; | |
| 136 | while((RK7ADDR->rk7cs1&CTLRDY) == 0) | |
| 137 | ; | |
| 138 | if (++rk7tab.b_errcnt <= ERR_CNT) { | |
| 139 | ubafree(rk7_ubinfo); | |
| 140 | rk7start(); | |
| 141 | return; | |
| 142 | } | |
| 143 | bp->b_flags |= B_ERROR; | |
| 144 | } | |
| 145 | rk7tab.b_errcnt = 0; | |
| 146 | rk7tab.b_actf = bp->av_forw; | |
| 147 | bp->b_resid = 0; | |
| 148 | ubafree(rk7_ubinfo); | |
| 149 | iodone(bp); | |
| 150 | RK7ADDR->rk7cs2 |= RELEASE; | |
| 151 | RK7ADDR->rk7cs1 = GO; | |
| 152 | rk7start(); | |
| 153 | } | |
| 154 | ||
| 155 | rk7read(dev) | |
| 156 | dev_t dev; | |
| 157 | { | |
| 158 | ||
| 159 | physio(rk7strategy, &rrk7buf, dev, B_READ, minphys); | |
| 160 | } | |
| 161 | ||
| 162 | rk7write(dev) | |
| 163 | dev_t dev; | |
| 164 | { | |
| 165 | ||
| 166 | physio(rk7strategy, &rrk7buf, dev, B_WRITE, minphys); | |
| 167 | } |