1 /* hp.c 4.25 81/03/08 */ 2 3 #include "hp.h" 4 #if NHP > 0 5 /* 6 * HP disk driver for RP0x+RM0x 7 * 8 * TODO: 9 * check RM80 skip sector handling, esp when ECC's occur later 10 * add reading of bad sector information and disk layout from sector 1 11 * add bad sector forwarding code 12 * check interaction with tape driver on same mba 13 * check multiple drive handling 14 * check offset recovery handling 15 * see if DCLR and/or RELEASE set attention status 16 */ 17 18 #include "../h/param.h" 19 #include "../h/systm.h" 20 #include "../h/dk.h" 21 #include "../h/buf.h" 22 #include "../h/conf.h" 23 #include "../h/dir.h" 24 #include "../h/user.h" 25 #include "../h/map.h" 26 #include "../h/pte.h" 27 #include "../h/mbareg.h" 28 #include "../h/mbavar.h" 29 #include "../h/mtpr.h" 30 #include "../h/vm.h" 31 #include "../h/cmap.h" 32 33 #include "../h/hpreg.h" 34 35 /* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */ 36 struct size { 37 daddr_t nblocks; 38 int cyloff; 39 } hp_sizes[8] = { 40 15884, 0, /* A=cyl 0 thru 37 */ 41 33440, 38, /* B=cyl 38 thru 117 */ 42 340670, 0, /* C=cyl 0 thru 814 */ 43 0, 0, 44 0, 0, 45 0, 0, 46 291346, 118, /* G=cyl 118 thru 814 */ 47 0, 0, 48 }, rm_sizes[8] = { 49 15884, 0, /* A=cyl 0 thru 99 */ 50 33440, 100, /* B=cyl 100 thru 309 */ 51 131680, 0, /* C=cyl 0 thru 822 */ 52 2720, 291, 53 0, 0, 54 0, 0, 55 82080, 310, /* G=cyl 310 thru 822 */ 56 0, 0, 57 }, rm5_sizes[8] = { 58 15884, 0, /* A=cyl 0 thru 26 */ 59 33440, 27, /* B=cyl 27 thru 81 */ 60 500992, 0, /* C=cyl 0 thru 823 */ 61 15884, 562, /* D=cyl 562 thru 588 */ 62 55936, 589, /* E=cyl 589 thru 680 */ 63 86944, 681, /* F=cyl 681 thru 823 */ 64 159296, 562, /* G=cyl 562 thru 823 */ 65 291346, 82, /* H=cyl 82 thru 561 */ 66 }, rm80_sizes[8] = { 67 15884, 0, /* A=cyl 0 thru 36 */ 68 33440, 37, /* B=cyl 37 thru 114 */ 69 242606, 0, /* C=cyl 0 thru 558 */ 70 0, 0, 71 0, 0, 72 0, 0, 73 82080, 115, /* G=cyl 115 thru 304 */ 74 110236, 305, /* H=cyl 305 thru 558 */ 75 }; 76 /* END OF STUFF WHICH SHOULD BE READ IN PER DISK */ 77 78 #define _hpSDIST 2 79 #define _hpRDIST 3 80 81 int hpSDIST = _hpSDIST; 82 int hpRDIST = _hpRDIST; 83 84 short hptypes[] = 85 { MBDT_RM03, MBDT_RM05, MBDT_RP06, MBDT_RM80, 0 }; 86 struct mba_device *hpinfo[NHP]; 87 int hpattach(),hpustart(),hpstart(),hpdtint(); 88 struct mba_driver hpdriver = 89 { hpattach, 0, hpustart, hpstart, hpdtint, 0, 90 hptypes, "hp", 0, hpinfo }; 91 92 struct hpst { 93 short nsect; 94 short ntrak; 95 short nspc; 96 short ncyl; 97 struct size *sizes; 98 } hpst[] = { 99 32, 5, 32*5, 823, rm_sizes, /* RM03 */ 100 32, 19, 32*19, 823, rm5_sizes, /* RM05 */ 101 22, 19, 22*19, 815, hp_sizes, /* RP06 */ 102 31, 14, 31*14, 559, rm80_sizes /* RM80 */ 103 }; 104 105 u_char hp_offset[16] = { 106 HPOF_P400, HPOF_M400, HPOF_P400, HPOF_M400, 107 HPOF_P800, HPOF_M800, HPOF_P800, HPOF_M800, 108 HPOF_P1200, HPOF_M1200, HPOF_P1200, HPOF_M1200, 109 0, 0, 0, 0, 110 }; 111 112 struct buf rhpbuf[NHP]; 113 char hprecal[NHP]; 114 115 #define b_cylin b_resid 116 117 #ifdef INTRLVE 118 daddr_t dkblock(); 119 #endif 120 121 int hpseek; 122 123 /*ARGSUSED*/ 124 hpattach(mi, slave) 125 struct mba_device *mi; 126 { 127 register struct hpst *st = &hpst[mi->mi_type]; 128 129 if (mi->mi_dk >= 0) 130 dk_mspw[mi->mi_dk] = 1.0 / 60 / (st->nsect * 256); 131 } 132 133 hpstrategy(bp) 134 register struct buf *bp; 135 { 136 register struct mba_device *mi; 137 register struct hpst *st; 138 register int unit; 139 long sz, bn; 140 int xunit = minor(bp->b_dev) & 07; 141 142 sz = bp->b_bcount; 143 sz = (sz+511) >> 9; 144 unit = dkunit(bp); 145 if (unit >= NHP) 146 goto bad; 147 mi = hpinfo[unit]; 148 if (mi == 0 || mi->mi_alive == 0) 149 goto bad; 150 st = &hpst[mi->mi_type]; 151 if (bp->b_blkno < 0 || 152 (bn = dkblock(bp))+sz > st->sizes[xunit].nblocks) 153 goto bad; 154 bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff; 155 (void) spl5(); 156 disksort(&mi->mi_tab, bp); 157 if (mi->mi_tab.b_active == 0) 158 mbustart(mi); 159 (void) spl0(); 160 return; 161 162 bad: 163 bp->b_flags |= B_ERROR; 164 iodone(bp); 165 return; 166 } 167 168 hpustart(mi) 169 register struct mba_device *mi; 170 { 171 register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv; 172 register struct buf *bp = mi->mi_tab.b_actf; 173 register struct hpst *st; 174 daddr_t bn; 175 int sn, dist, flags; 176 177 if ((hpaddr->hpcs1&HP_DVA) == 0) 178 return (MBU_BUSY); 179 if ((hpaddr->hpds & HPDS_VV) == 0) { 180 hpaddr->hpcs1 = HP_DCLR|HP_GO; 181 hpaddr->hpcs1 = HP_PRESET|HP_GO; 182 hpaddr->hpof = HPOF_FMT22; 183 } 184 if (mi->mi_tab.b_active || mi->mi_hd->mh_ndrive == 1) 185 return (MBU_DODATA); 186 if ((hpaddr->hpds & HPDS_DREADY) != HPDS_DREADY) 187 return (MBU_DODATA); 188 st = &hpst[mi->mi_type]; 189 bn = dkblock(bp); 190 sn = bn%st->nspc; 191 sn = (sn+st->nsect-hpSDIST)%st->nsect; 192 if (bp->b_cylin == (hpaddr->hpdc & 0xffff)) { 193 if (hpseek) 194 return (MBU_DODATA); 195 dist = ((hpaddr->hpla & 0xffff)>>6) - st->nsect + 1; 196 if (dist < 0) 197 dist += st->nsect; 198 if (dist > st->nsect - hpRDIST) 199 return (MBU_DODATA); 200 } else 201 hpaddr->hpdc = bp->b_cylin; 202 if (hpseek) 203 hpaddr->hpcs1 = HP_SEEK|HP_GO; 204 else { 205 hpaddr->hpda = sn; 206 hpaddr->hpcs1 = HP_SEARCH|HP_GO; 207 } 208 return (MBU_STARTED); 209 } 210 211 hpstart(mi) 212 register struct mba_device *mi; 213 { 214 register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv; 215 register struct buf *bp = mi->mi_tab.b_actf; 216 register struct hpst *st = &hpst[mi->mi_type]; 217 daddr_t bn; 218 int sn, tn; 219 220 bn = dkblock(bp); 221 sn = bn%st->nspc; 222 tn = sn/st->nsect; 223 sn %= st->nsect; 224 hpaddr->hpdc = bp->b_cylin; 225 hpaddr->hpda = (tn << 8) + sn; 226 } 227 228 hpdtint(mi, mbasr) 229 register struct mba_device *mi; 230 int mbasr; 231 { 232 register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv; 233 register struct buf *bp = mi->mi_tab.b_actf; 234 int retry = 0; 235 236 if (hpaddr->hpds&HPDS_ERR || mbasr&MBAEBITS) { 237 if (hpaddr->hper1&HPER1_WLE) { 238 printf("hp%d: write locked\n", dkunit(bp)); 239 bp->b_flags |= B_ERROR; 240 } else if (++mi->mi_tab.b_errcnt > 27 || 241 mbasr & MBASR_HARD || 242 hpaddr->hper1 & HPER1_HARD || 243 hpaddr->hper2 & HPER2_HARD) { 244 harderr(bp, "hp"); 245 printf("mbasr=%b er1=%b er2=%b\n", 246 mbasr, mbasr_bits, 247 hpaddr->hper1, HPER1_BITS, 248 hpaddr->hper2, HPER2_BITS); 249 bp->b_flags |= B_ERROR; 250 #ifdef notdef 251 } else if (hpaddr->hper2&HPER2_SSE) { 252 hpecc(mi, 1); 253 return (MBD_RESTARTED); 254 #endif 255 } else if ((hpaddr->hper1&(HPER1_DCK|HPER1_ECH))==HPER1_DCK) { 256 if (hpecc(mi, 0)) 257 return (MBD_RESTARTED); 258 /* else done */ 259 } else 260 retry = 1; 261 hpaddr->hpcs1 = HP_DCLR|HP_GO; 262 if ((mi->mi_tab.b_errcnt&07) == 4) { 263 hpaddr->hpcs1 = HP_RECAL|HP_GO; 264 hprecal[mi->mi_unit] = 0; 265 goto nextrecal; 266 } 267 if (retry) 268 return (MBD_RETRY); 269 } 270 switch (hprecal[mi->mi_unit]) { 271 272 case 1: 273 hpaddr->hpdc = bp->b_cylin; 274 hpaddr->hpcs1 = HP_SEEK|HP_GO; 275 goto nextrecal; 276 case 2: 277 if (mi->mi_tab.b_errcnt < 16 || 278 (bp->b_flags & B_READ) != 0) 279 goto donerecal; 280 hpaddr->hpof = hp_offset[mi->mi_tab.b_errcnt & 017]|HPOF_FMT22; 281 hpaddr->hpcs1 = HP_OFFSET|HP_GO; 282 goto nextrecal; 283 nextrecal: 284 hprecal[mi->mi_unit]++; 285 return (MBD_RESTARTED); 286 donerecal: 287 hprecal[mi->mi_unit] = 0; 288 return (MBD_RETRY); 289 } 290 bp->b_resid = -(mi->mi_mba->mba_bcr) & 0xffff; 291 if (mi->mi_tab.b_errcnt > 16) { 292 /* 293 * This is fast and occurs rarely; we don't 294 * bother with interrupts. 295 */ 296 hpaddr->hpcs1 = HP_RTC|HP_GO; 297 while (hpaddr->hpds & HPDS_PIP) 298 ; 299 mbclrattn(mi); 300 } 301 hpaddr->hpcs1 = HP_RELEASE|HP_GO; 302 return (MBD_DONE); 303 } 304 305 hpread(dev) 306 dev_t dev; 307 { 308 register int unit = minor(dev) >> 3; 309 310 if (unit >= NHP) 311 u.u_error = ENXIO; 312 else 313 physio(hpstrategy, &rhpbuf[unit], dev, B_READ, minphys); 314 } 315 316 hpwrite(dev) 317 dev_t dev; 318 { 319 register int unit = minor(dev) >> 3; 320 321 if (unit >= NHP) 322 u.u_error = ENXIO; 323 else 324 physio(hpstrategy, &rhpbuf[unit], dev, B_WRITE, minphys); 325 } 326 327 hpecc(mi, rm80sse) 328 register struct mba_device *mi; 329 int rm80sse; 330 { 331 register struct mba_regs *mbp = mi->mi_mba; 332 register struct hpdevice *rp = (struct hpdevice *)mi->mi_drv; 333 register struct buf *bp = mi->mi_tab.b_actf; 334 register struct hpst *st; 335 register int i; 336 caddr_t addr; 337 int reg, bit, byte, npf, mask, o; 338 int bn, cn, tn, sn; 339 struct pte mpte; 340 int bcr; 341 342 bcr = mbp->mba_bcr & 0xffff; 343 if (bcr) 344 bcr |= 0xffff0000; /* sxt */ 345 npf = btop(bcr + bp->b_bcount) - 1; 346 reg = npf; 347 #ifdef notdef 348 if (rm80sse) { 349 rp->hpof |= HPOF_SSEI; 350 reg--; /* compensate in advance for reg-- below */ 351 goto sse; 352 } 353 #endif 354 o = (int)bp->b_un.b_addr & PGOFSET; 355 printf("hp%d%c: soft ecc sn%d\n", dkunit(bp), 356 'a'+(minor(bp->b_dev)&07), bp->b_blkno + npf); 357 mask = rp->hpec2&0xffff; 358 i = (rp->hpec1&0xffff) - 1; /* -1 makes 0 origin */ 359 bit = i&07; 360 i = (i&~07)>>3; 361 byte = i + o; 362 while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) { 363 mpte = mbp->mba_map[reg+btop(byte)]; 364 addr = ptob(mpte.pg_pfnum) + (byte & PGOFSET); 365 putmemc(addr, getmemc(addr)^(mask<<bit)); 366 byte++; 367 i++; 368 bit -= 8; 369 } 370 if (bcr == 0) 371 return (0); 372 #ifdef notdef 373 sse: 374 if (rpof&HPOF_SSEI) 375 rp->hpda = rp->hpda + 1; 376 rp->hper1 = 0; 377 rp->hpcs1 = HP_RCOM|HP_GO; 378 #else 379 sse: 380 rp->hpcs1 = HP_DCLR|HP_GO; 381 bn = dkblock(bp); 382 st = &hpst[mi->mi_type]; 383 cn = bp->b_cylin; 384 sn = bn%(st->nspc) + npf + 1; 385 tn = sn/st->nsect; 386 sn %= st->nsect; 387 cn += tn/st->ntrak; 388 tn %= st->ntrak; 389 #ifdef notdef 390 if (rp->hpof&SSEI) 391 sn++; 392 #endif 393 rp->hpdc = cn; 394 rp->hpda = (tn<<8) + sn; 395 mbp->mba_sr = -1; 396 mbp->mba_var = (int)ptob(reg+1) + o; 397 rp->hpcs1 = HP_RCOM|HP_GO; 398 #endif 399 return (1); 400 } 401 402 #define DBSIZE 20 403 404 hpdump(dev) 405 dev_t dev; 406 { 407 register struct mba_device *mi; 408 register struct mba_regs *mba; 409 struct hpdevice *hpaddr; 410 char *start; 411 int num, unit; 412 register struct hpst *st; 413 414 num = maxfree; 415 start = 0; 416 unit = minor(dev) >> 3; 417 if (unit >= NHP) 418 return (ENXIO); 419 #define phys(a,b) ((b)((int)(a)&0x7fffffff)) 420 mi = phys(hpinfo[unit],struct mba_device *); 421 if (mi == 0 || mi->mi_alive == 0) 422 return (ENXIO); 423 mba = phys(mi->mi_hd, struct mba_hd *)->mh_physmba; 424 mba->mba_cr = MBAINIT; 425 hpaddr = (struct hpdevice *)&mba->mba_drv[mi->mi_drive]; 426 if ((hpaddr->hpds & HPDS_VV) == 0) { 427 hpaddr->hpcs1 = HP_DCLR|HP_GO; 428 hpaddr->hpcs1 = HP_PRESET|HP_GO; 429 hpaddr->hpof = HPOF_FMT22; 430 } 431 st = &hpst[mi->mi_type]; 432 if (dumplo < 0 || dumplo + num >= st->sizes[minor(dev)&07].nblocks) 433 return (EINVAL); 434 while (num > 0) { 435 register struct pte *hpte = mba->mba_map; 436 register int i; 437 int blk, cn, sn, tn; 438 daddr_t bn; 439 440 blk = num > DBSIZE ? DBSIZE : num; 441 bn = dumplo + btop(start); 442 cn = bn/st->nspc + st->sizes[minor(dev)&07].cyloff; 443 sn = bn%st->nspc; 444 tn = sn/st->nsect; 445 sn = sn%st->nsect; 446 hpaddr->hpdc = cn; 447 hpaddr->hpda = (tn << 8) + sn; 448 for (i = 0; i < blk; i++) 449 *(int *)hpte++ = (btop(start)+i) | PG_V; 450 mba->mba_sr = -1; 451 mba->mba_bcr = -(blk*NBPG); 452 mba->mba_var = 0; 453 hpaddr->hpcs1 = HP_WCOM | HP_GO; 454 while ((hpaddr->hpds & HPDS_DRY) == 0) 455 ; 456 if (hpaddr->hpds&HPDS_ERR) 457 return (EIO); 458 start += blk*NBPG; 459 num -= blk; 460 } 461 return (0); 462 } 463 #endif 464