1 /* hp.c 4.7 81/02/08 */ 2 3 #include "hp.h" 4 #if NHP > 0 5 /* 6 * RP/RM disk driver 7 */ 8 9 #include "../h/param.h" 10 #include "../h/systm.h" 11 #include "../h/dk.h" 12 #include "../h/buf.h" 13 #include "../h/conf.h" 14 #include "../h/dir.h" 15 #include "../h/user.h" 16 #include "../h/map.h" 17 #include "../h/pte.h" 18 #include "../h/mba.h" 19 #include "../h/mtpr.h" 20 #include "../h/vm.h" 21 #include "../h/cmap.h" 22 23 #include "../h/hpreg.h" 24 25 /* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */ 26 struct size { 27 daddr_t nblocks; 28 int cyloff; 29 } hp_sizes[8] = { 30 15884, 0, /* A=cyl 0 thru 37 */ 31 33440, 38, /* B=cyl 38 thru 117 */ 32 340670, 0, /* C=cyl 0 thru 814 */ 33 0, 0, 34 0, 0, 35 0, 0, 36 291346, 118, /* G=cyl 118 thru 814 */ 37 0, 0, 38 }, rm_sizes[8] = { 39 15884, 0, /* A=cyl 0 thru 99 */ 40 33440, 100, /* B=cyl 100 thru 309 */ 41 131680, 0, /* C=cyl 0 thru 822 */ 42 2720, 291, 43 0, 0, 44 0, 0, 45 82080, 310, /* G=cyl 310 thru 822 */ 46 0, 0, 47 }, rm5_sizes[8] = { 48 15884, 0, /* A=cyl 0 thru 26 */ 49 33440, 27, /* B=cyl 27 thru 81 */ 50 500992, 0, /* C=cyl 0 thru 823 */ 51 15884, 562, /* D=cyl 562 thru 588 */ 52 55936, 589, /* E=cyl 589 thru 680 */ 53 86944, 681, /* F=cyl 681 thru 823 */ 54 159296, 562, /* G=cyl 562 thru 823 */ 55 291346, 82, /* H=cyl 82 thru 561 */ 56 }, rm80_sizes[8] = { 57 15884, 0, /* A=cyl 0 thru 36 */ 58 33440, 37, /* B=cyl 37 thru 114 */ 59 242606, 0, /* C=cyl 0 thru 558 */ 60 0, 0, 61 0, 0, 62 0, 0, 63 82080, 115, /* G=cyl 115 thru 304 */ 64 110236, 305, /* H=cyl 305 thru 558 */ 65 }; 66 /* END OF STUFF WHICH SHOULD BE READ IN PER DISK */ 67 68 #define _hpSDIST 2 69 #define _hpRDIST 3 70 71 int hpSDIST = _hpSDIST; 72 int hpRDIST = _hpRDIST; 73 74 short hptypes[] = 75 { MBDT_RM03, MBDT_RM05, MBDT_RP06, MBDT_RM80, 0 }; 76 struct mba_info *hpinfo[NHP]; 77 int hpdkinit(),hpustart(),hpstart(),hpdtint(); 78 struct mba_driver hpdriver = 79 { hpdkinit, hpustart, hpstart, hpdtint, 0, hptypes, hpinfo }; 80 81 struct hpst { 82 short nsect; 83 short ntrak; 84 short nspc; 85 short ncyl; 86 struct size *sizes; 87 } hpst[] = { 88 32, 5, 32*5, 823, rm_sizes, /* RM03 */ 89 32, 19, 32*19, 823, rm5_sizes, /* RM05 */ 90 22, 19, 22*19, 815, hp_sizes, /* RP06 */ 91 31, 14, 31*14, 559, rm80_sizes /* RM80 */ 92 }; 93 94 int hp_offset[16] = { 95 P400, M400, P400, M400, 96 P800, M800, P800, M800, 97 P1200, M1200, P1200, M1200, 98 0, 0, 0, 0, 99 }; 100 101 struct buf rhpbuf; 102 103 #define b_cylin b_resid 104 105 #ifdef INTRLVE 106 daddr_t dkblock(); 107 #endif 108 109 hpstrategy(bp) 110 register struct buf *bp; 111 { 112 register struct mba_info *mi; 113 register struct hpst *st; 114 register int unit; 115 long sz, bn; 116 int xunit = minor(bp->b_dev) & 07; 117 118 sz = bp->b_bcount; 119 sz = (sz+511) >> 9; 120 unit = dkunit(bp); 121 if (unit >= NHP) 122 goto bad; 123 mi = hpinfo[unit]; 124 if (mi->mi_alive == 0) 125 goto bad; 126 st = &hpst[mi->mi_type]; 127 if (bp->b_blkno < 0 || 128 (bn = dkblock(bp))+sz > st->sizes[xunit].nblocks) 129 goto bad; 130 bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff; 131 (void) spl5(); 132 disksort(&mi->mi_tab, bp); 133 if (mi->mi_tab.b_active == 0) 134 mbustart(mi); 135 (void) spl0(); 136 return; 137 138 bad: 139 bp->b_flags |= B_ERROR; 140 iodone(bp); 141 return; 142 } 143 144 hpustart(mi) 145 register struct mba_info *mi; 146 { 147 register struct device *hpaddr = (struct device *)mi->mi_drv; 148 register struct buf *bp = mi->mi_tab.b_actf; 149 register struct hpst *st; 150 daddr_t bn; 151 int sn, dist, flags; 152 153 if ((hpaddr->hpcs1&DVA) == 0) 154 return (MBU_BUSY); 155 if ((hpaddr->hpds & VV) == 0) { 156 hpaddr->hpcs1 = DCLR|GO; 157 hpaddr->hpcs1 = PRESET|GO; 158 hpaddr->hpof = FMT22; 159 } 160 if (mi->mi_tab.b_active) 161 return (MBU_DODATA); 162 if ((hpaddr->hpds & (DPR|MOL)) != (DPR|MOL)) 163 return (MBU_DODATA); 164 hpaddr->hpdc = bp->b_cylin; 165 flags = mi->mi_hd->mh_flags; 166 if (flags&MH_NOSEEK) 167 return (MBU_DODATA); 168 if (bp->b_cylin == (hpaddr->hpdc & 0xffff)) { 169 if (flags&MH_NOSEARCH) 170 return (MBU_DODATA); 171 bn = dkblock(bp); 172 st = &hpst[mi->mi_type]; 173 sn = bn%st->nspc; 174 sn = (sn+st->nsect-hpSDIST)%st->nsect; 175 dist = ((hpaddr->hpla & 0xffff)>>6) - st->nsect + 1; 176 if (dist < 0) 177 dist += st->nsect; 178 if (dist > st->nsect - hpRDIST) 179 return (MBU_DODATA); 180 } 181 if (flags&MH_NOSEARCH) 182 hpaddr->hpcs1 = SEEK|GO; 183 else { 184 hpaddr->hpda = sn; 185 hpaddr->hpcs1 = SEARCH|GO; 186 } 187 return (MBU_STARTED); 188 } 189 190 hpstart(mi) 191 register struct mba_info *mi; 192 { 193 register struct device *hpaddr = (struct device *)mi->mi_drv; 194 register struct buf *bp = mi->mi_tab.b_actf; 195 register struct hpst *st = &hpst[mi->mi_type]; 196 daddr_t bn; 197 int sn, tn; 198 199 bn = dkblock(bp); 200 sn = bn%st->nspc; 201 tn = sn/st->nsect; 202 sn = sn%st->nsect; 203 if (mi->mi_tab.b_errcnt >= 16 && (bp->b_flags&B_READ) != 0) { 204 hpaddr->hpof = hp_offset[mi->mi_tab.b_errcnt & 017] | FMT22; 205 hpaddr->hpcs1 = OFFSET|GO; 206 while (hpaddr->hpds & PIP) 207 ; 208 mbclrattn(mi); 209 } 210 hpaddr->hpdc = bp->b_cylin; 211 hpaddr->hpda = (tn << 8) + sn; 212 } 213 214 hpdtint(mi, mbastat) 215 register struct mba_info *mi; 216 int mbastat; 217 { 218 register struct device *hpaddr = (struct device *)mi->mi_drv; 219 register struct buf *bp = mi->mi_tab.b_actf; 220 221 while ((hpaddr->hpds & DRY) == 0) /* shouldn't happen */ 222 printf("hp dry not set\n"); 223 if (hpaddr->hpds & ERR || mbastat & MBAEBITS) 224 if (++mi->mi_tab.b_errcnt < 28 && (hpaddr->hper1&WLE) == 0) { 225 if ((hpaddr->hper1&0xffff) != DCK) { 226 hpaddr->hpcs1 = DCLR|GO; 227 if ((mi->mi_tab.b_errcnt&07) == 4) { 228 hpaddr->hpcs1 = RECAL|GO; 229 while (hpaddr->hpds & PIP) 230 ; 231 mbclrattn(mi); 232 } 233 return (MBD_RETRY); 234 } else if (hpecc(mi)) 235 return (MBD_RESTARTED); 236 } else { 237 deverror(bp, mbastat, hpaddr->hper1); 238 bp->b_flags |= B_ERROR; 239 } 240 bp->b_resid = -(mi->mi_mba->mba_bcr) & 0xffff; 241 if (mi->mi_tab.b_errcnt) { 242 hpaddr->hpcs1 = RTC|GO; 243 while (hpaddr->hpds & PIP) 244 ; 245 mbclrattn(mi); 246 } 247 hpaddr->hpcs1 = RELEASE|GO; 248 return (MBD_DONE); 249 } 250 251 hpread(dev) 252 { 253 254 physio(hpstrategy, &rhpbuf, dev, B_READ, minphys); 255 } 256 257 hpwrite(dev) 258 { 259 260 physio(hpstrategy, &rhpbuf, dev, B_WRITE, minphys); 261 } 262 263 hpecc(mi) 264 register struct mba_info *mi; 265 { 266 register struct mba_regs *mbp = mi->mi_mba; 267 register struct device *rp = (struct device *)mi->mi_drv; 268 register struct buf *bp = mi->mi_tab.b_actf; 269 register struct hpst *st; 270 register int i; 271 caddr_t addr; 272 int reg, bit, byte, npf, mask, o; 273 int bn, cn, tn, sn; 274 struct pte mpte; 275 int bcr; 276 277 /* 278 * Npf is the number of sectors transferred before the sector 279 * containing the ECC error, and reg is the MBA register 280 * mapping (the first part of)the transfer. 281 * O is offset within a memory page of the first byte transferred. 282 */ 283 bcr = mbp->mba_bcr & 0xffff; 284 if (bcr) 285 bcr |= 0xffff0000; /* sxt */ 286 npf = btop(bcr + bp->b_bcount) - 1; 287 reg = npf; 288 o = (int)bp->b_un.b_addr & PGOFSET; 289 printf("%D ", bp->b_blkno + npf); 290 prdev("ECC", bp->b_dev); 291 mask = rp->hpec2&0xffff; 292 if (mask == 0) { 293 rp->hpof = FMT22; 294 return (0); 295 } 296 297 /* 298 * Compute the byte and bit position of the error. 299 * The variable i is the byte offset in the transfer, 300 * the variable byte is the offset from a page boundary 301 * in main memory. 302 */ 303 i = (rp->hpec1&0xffff) - 1; /* -1 makes 0 origin */ 304 bit = i&07; 305 i = (i&~07)>>3; 306 byte = i + o; 307 /* 308 * Correct while possible bits remain of mask. Since mask 309 * contains 11 bits, we continue while the bit offset is > -11. 310 * Also watch out for end of this block and the end of the whole 311 * transfer. 312 */ 313 while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) { 314 mpte = mbp->mba_map[reg+btop(byte)]; 315 addr = ptob(mpte.pg_pfnum) + (byte & PGOFSET); 316 putmemc(addr, getmemc(addr)^(mask<<bit)); 317 byte++; 318 i++; 319 bit -= 8; 320 } 321 mi->mi_hd->mh_active++; /* Either complete or continuing */ 322 if (bcr == 0) 323 return (0); 324 /* 325 * Have to continue the transfer... clear the drive, 326 * and compute the position where the transfer is to continue. 327 * We have completed npf+1 sectores of the transfer already; 328 * restart at offset o of next sector (i.e. in MBA register reg+1). 329 */ 330 rp->hpcs1 = DCLR|GO; 331 bn = dkblock(bp); 332 st = &hpst[mi->mi_type]; 333 cn = bp->b_cylin; 334 sn = bn%(st->nspc) + npf + 1; 335 tn = sn/st->nsect; 336 sn %= st->nsect; 337 cn += tn/st->ntrak; 338 tn %= st->ntrak; 339 rp->hpdc = cn; 340 rp->hpda = (tn<<8) + sn; 341 mbp->mba_sr = -1; 342 mbp->mba_var = (int)ptob(reg+1) + o; 343 rp->hpcs1 = RCOM|GO; 344 return (1); 345 } 346 347 #define DBSIZE 20 348 349 hpdump(dev) 350 dev_t dev; 351 { 352 register struct mba_info *mi; 353 register struct mba_regs *mba; 354 struct device *hpaddr; 355 char *start; 356 int num, unit; 357 register struct hpst *st; 358 359 num = maxfree; 360 start = 0; 361 unit = minor(dev) >> 3; 362 if (unit >= NHP) { 363 printf("bad unit\n"); 364 return (-1); 365 } 366 #define phys(a,b) ((b)((int)(a)&0x7fffffff)) 367 mi = phys(hpinfo[unit],struct mba_info *); 368 if (mi->mi_alive == 0) { 369 printf("dna\n"); 370 return (-1); 371 } 372 mba = phys(mi->mi_hd, struct mba_hd *)->mh_physmba; 373 mba->mba_cr = MBAINIT; 374 hpaddr = (struct device *)&mba->mba_drv[mi->mi_drive]; 375 if ((hpaddr->hpds & VV) == 0) { 376 hpaddr->hpcs1 = DCLR|GO; 377 hpaddr->hpcs1 = PRESET|GO; 378 hpaddr->hpof = FMT22; 379 } 380 st = &hpst[mi->mi_type]; 381 if (dumplo < 0 || dumplo + num >= st->sizes[minor(dev)&07].nblocks) { 382 printf("oor\n"); 383 return (-1); 384 } 385 while (num > 0) { 386 register struct pte *hpte = mba->mba_map; 387 register int i; 388 int blk, cn, sn, tn; 389 daddr_t bn; 390 391 blk = num > DBSIZE ? DBSIZE : num; 392 bn = dumplo + btop(start); 393 cn = bn/st->nspc + st->sizes[minor(dev)&07].cyloff; 394 sn = bn%st->nspc; 395 tn = sn/st->nsect; 396 sn = sn%st->nsect; 397 hpaddr->hpdc = cn; 398 hpaddr->hpda = (tn << 8) + sn; 399 for (i = 0; i < blk; i++) 400 *(int *)hpte++ = (btop(start)+i) | PG_V; 401 mba->mba_sr = -1; 402 mba->mba_bcr = -(blk*NBPG); 403 mba->mba_var = 0; 404 hpaddr->hpcs1 = WCOM | GO; 405 while ((hpaddr->hpds & DRY) == 0) 406 ; 407 if (hpaddr->hpds&ERR) { 408 printf("dskerr: (%d,%d,%d) ds=%x er=%x\n", 409 cn, tn, sn, hpaddr->hpds, hpaddr->hper1); 410 return (-1); 411 } 412 start += blk*NBPG; 413 num -= blk; 414 } 415 return (0); 416 } 417 418 hpdkinit() 419 { 420 /* I don't really care what this does .. kre */ 421 } 422 #endif 423