1 /* hp.c 4.23 81/03/06 */ 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 */ 15 16 #include "../h/param.h" 17 #include "../h/systm.h" 18 #include "../h/dk.h" 19 #include "../h/buf.h" 20 #include "../h/conf.h" 21 #include "../h/dir.h" 22 #include "../h/user.h" 23 #include "../h/map.h" 24 #include "../h/pte.h" 25 #include "../h/mba.h" 26 #include "../h/mtpr.h" 27 #include "../h/vm.h" 28 #include "../h/cmap.h" 29 30 #include "../h/hpreg.h" 31 32 /* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */ 33 struct size { 34 daddr_t nblocks; 35 int cyloff; 36 } hp_sizes[8] = { 37 15884, 0, /* A=cyl 0 thru 37 */ 38 33440, 38, /* B=cyl 38 thru 117 */ 39 340670, 0, /* C=cyl 0 thru 814 */ 40 0, 0, 41 0, 0, 42 0, 0, 43 291346, 118, /* G=cyl 118 thru 814 */ 44 0, 0, 45 }, rm_sizes[8] = { 46 15884, 0, /* A=cyl 0 thru 99 */ 47 33440, 100, /* B=cyl 100 thru 309 */ 48 131680, 0, /* C=cyl 0 thru 822 */ 49 2720, 291, 50 0, 0, 51 0, 0, 52 82080, 310, /* G=cyl 310 thru 822 */ 53 0, 0, 54 }, rm5_sizes[8] = { 55 15884, 0, /* A=cyl 0 thru 26 */ 56 33440, 27, /* B=cyl 27 thru 81 */ 57 500992, 0, /* C=cyl 0 thru 823 */ 58 15884, 562, /* D=cyl 562 thru 588 */ 59 55936, 589, /* E=cyl 589 thru 680 */ 60 86944, 681, /* F=cyl 681 thru 823 */ 61 159296, 562, /* G=cyl 562 thru 823 */ 62 291346, 82, /* H=cyl 82 thru 561 */ 63 }, rm80_sizes[8] = { 64 15884, 0, /* A=cyl 0 thru 36 */ 65 33440, 37, /* B=cyl 37 thru 114 */ 66 242606, 0, /* C=cyl 0 thru 558 */ 67 0, 0, 68 0, 0, 69 0, 0, 70 82080, 115, /* G=cyl 115 thru 304 */ 71 110236, 305, /* H=cyl 305 thru 558 */ 72 }; 73 /* END OF STUFF WHICH SHOULD BE READ IN PER DISK */ 74 75 #define _hpSDIST 2 76 #define _hpRDIST 3 77 78 int hpSDIST = _hpSDIST; 79 int hpRDIST = _hpRDIST; 80 81 short hptypes[] = 82 { MBDT_RM03, MBDT_RM05, MBDT_RP06, MBDT_RM80, 0 }; 83 struct mba_info *hpinfo[NHP]; 84 int hpdkinit(),hpustart(),hpstart(),hpdtint(); 85 struct mba_driver hpdriver = 86 { hpdkinit, hpustart, hpstart, hpdtint, 0, hptypes, hpinfo }; 87 88 struct hpst { 89 short nsect; 90 short ntrak; 91 short nspc; 92 short ncyl; 93 struct size *sizes; 94 } hpst[] = { 95 32, 5, 32*5, 823, rm_sizes, /* RM03 */ 96 32, 19, 32*19, 823, rm5_sizes, /* RM05 */ 97 22, 19, 22*19, 815, hp_sizes, /* RP06 */ 98 31, 14, 31*14, 559, rm80_sizes /* RM80 */ 99 }; 100 101 u_char hp_offset[16] = { 102 HP_P400, HP_M400, HP_P400, HP_M400, HP_P800, HP_M800, HP_P800, HP_M800, 103 HP_P1200, HP_M1200, HP_P1200, HP_M1200, 0, 0, 0, 0, 104 }; 105 106 struct buf rhpbuf[NHP]; 107 char hprecal[NHP]; 108 109 #define b_cylin b_resid 110 111 #ifdef INTRLVE 112 daddr_t dkblock(); 113 #endif 114 115 int hpseek; 116 117 hpdkinit(mi) 118 struct mba_info *mi; 119 { 120 register struct hpst *st = &hpst[mi->mi_type]; 121 122 if (mi->mi_dk >= 0) 123 dk_mspw[mi->mi_dk] = 1.0 / 60 / (st->nsect * 256); 124 } 125 126 hpstrategy(bp) 127 register struct buf *bp; 128 { 129 register struct mba_info *mi; 130 register struct hpst *st; 131 register int unit; 132 long sz, bn; 133 int xunit = minor(bp->b_dev) & 07; 134 135 sz = bp->b_bcount; 136 sz = (sz+511) >> 9; 137 unit = dkunit(bp); 138 if (unit >= NHP) 139 goto bad; 140 mi = hpinfo[unit]; 141 if (mi == 0 || mi->mi_alive == 0) 142 goto bad; 143 st = &hpst[mi->mi_type]; 144 if (bp->b_blkno < 0 || 145 (bn = dkblock(bp))+sz > st->sizes[xunit].nblocks) 146 goto bad; 147 bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff; 148 (void) spl5(); 149 disksort(&mi->mi_tab, bp); 150 if (mi->mi_tab.b_active == 0) 151 mbustart(mi); 152 (void) spl0(); 153 return; 154 155 bad: 156 bp->b_flags |= B_ERROR; 157 iodone(bp); 158 return; 159 } 160 161 hpustart(mi) 162 register struct mba_info *mi; 163 { 164 register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv; 165 register struct buf *bp = mi->mi_tab.b_actf; 166 register struct hpst *st; 167 daddr_t bn; 168 int sn, dist, flags; 169 170 if ((hpaddr->hpcs1&HP_DVA) == 0) 171 return (MBU_BUSY); 172 if ((hpaddr->hpds & HP_VV) == 0) { 173 hpaddr->hpcs1 = HP_DCLR|HP_GO; 174 hpaddr->hpcs1 = HP_PRESET|HP_GO; 175 hpaddr->hpof = HP_FMT22; 176 } 177 if (mi->mi_tab.b_active || mi->mi_hd->mh_ndrive == 1) 178 return (MBU_DODATA); 179 if ((hpaddr->hpds & (HP_DPR|HP_MOL)) != (HP_DPR|HP_MOL)) 180 return (MBU_DODATA); 181 st = &hpst[mi->mi_type]; 182 bn = dkblock(bp); 183 sn = bn%st->nspc; 184 sn = (sn+st->nsect-hpSDIST)%st->nsect; 185 if (bp->b_cylin == (hpaddr->hpdc & 0xffff)) { 186 if (hpseek) 187 return (MBU_DODATA); 188 dist = ((hpaddr->hpla & 0xffff)>>6) - st->nsect + 1; 189 if (dist < 0) 190 dist += st->nsect; 191 if (dist > st->nsect - hpRDIST) 192 return (MBU_DODATA); 193 } else 194 hpaddr->hpdc = bp->b_cylin; 195 if (hpseek) 196 hpaddr->hpcs1 = HP_SEEK|HP_GO; 197 else { 198 hpaddr->hpda = sn; 199 hpaddr->hpcs1 = HP_SEARCH|HP_GO; 200 } 201 return (MBU_STARTED); 202 } 203 204 hpstart(mi) 205 register struct mba_info *mi; 206 { 207 register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv; 208 register struct buf *bp = mi->mi_tab.b_actf; 209 register struct hpst *st = &hpst[mi->mi_type]; 210 daddr_t bn; 211 int sn, tn; 212 213 bn = dkblock(bp); 214 sn = bn%st->nspc; 215 tn = sn/st->nsect; 216 sn %= st->nsect; 217 if (mi->mi_tab.b_errcnt >= 16 && (bp->b_flags&B_READ) != 0) { 218 hpaddr->hpof = hp_offset[mi->mi_tab.b_errcnt & 017] | HP_FMT22; 219 hpaddr->hpcs1 = HP_OFFSET|HP_GO; 220 while (hpaddr->hpds & HP_PIP) 221 ; 222 mbclrattn(mi); 223 } 224 hpaddr->hpdc = bp->b_cylin; 225 hpaddr->hpda = (tn << 8) + sn; 226 } 227 228 hpdtint(mi, mbasr) 229 register struct mba_info *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&HP_ERR || mbasr&MBAEBITS) { 237 if (hpaddr->hper1&HP_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&HP_SSE) { 252 hpecc(mi, 1); 253 return (MBD_RESTARTED); 254 #endif 255 } else if ((hpaddr->hper1&(HP_DCK|HP_ECH)) == HP_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] = 1; 265 return (MBD_RESTARTED); 266 } 267 if (retry) 268 return (MBD_RETRY); 269 } 270 if (hprecal[mi->mi_unit]) { 271 hprecal[mi->mi_unit] = 0; 272 return (MBD_RETRY); 273 } 274 bp->b_resid = -(mi->mi_mba->mba_bcr) & 0xffff; 275 if (mi->mi_tab.b_errcnt > 16) { 276 hpaddr->hpcs1 = HP_RTC|HP_GO; 277 while (hpaddr->hpds & HP_PIP) 278 ; 279 mbclrattn(mi); 280 } 281 hpaddr->hpcs1 = HP_RELEASE|HP_GO; 282 return (MBD_DONE); 283 } 284 285 hpread(dev) 286 dev_t dev; 287 { 288 register int unit = minor(dev) >> 3; 289 290 if (unit >= NHP) 291 u.u_error = ENXIO; 292 else 293 physio(hpstrategy, &rhpbuf[unit], dev, B_READ, minphys); 294 } 295 296 hpwrite(dev) 297 dev_t dev; 298 { 299 register int unit = minor(dev) >> 3; 300 301 if (unit >= NHP) 302 u.u_error = ENXIO; 303 else 304 physio(hpstrategy, &rhpbuf[unit], dev, B_WRITE, minphys); 305 } 306 307 hpecc(mi, rm80sse) 308 register struct mba_info *mi; 309 int rm80sse; 310 { 311 register struct mba_regs *mbp = mi->mi_mba; 312 register struct hpdevice *rp = (struct hpdevice *)mi->mi_drv; 313 register struct buf *bp = mi->mi_tab.b_actf; 314 register struct hpst *st; 315 register int i; 316 caddr_t addr; 317 int reg, bit, byte, npf, mask, o; 318 int bn, cn, tn, sn; 319 struct pte mpte; 320 int bcr; 321 322 bcr = mbp->mba_bcr & 0xffff; 323 if (bcr) 324 bcr |= 0xffff0000; /* sxt */ 325 npf = btop(bcr + bp->b_bcount) - 1; 326 reg = npf; 327 #ifdef notdef 328 if (rm80sse) { 329 rp->hpof |= HP_SSEI; 330 reg--; /* compensate in advance for reg-- below */ 331 goto sse; 332 } 333 #endif 334 o = (int)bp->b_un.b_addr & PGOFSET; 335 printf("hp%d%c: soft ecc sn%d\n", dkunit(bp), 336 'a'+(minor(bp->b_dev)&07), bp->b_blkno + npf); 337 mask = rp->hpec2&0xffff; 338 i = (rp->hpec1&0xffff) - 1; /* -1 makes 0 origin */ 339 bit = i&07; 340 i = (i&~07)>>3; 341 byte = i + o; 342 while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) { 343 mpte = mbp->mba_map[reg+btop(byte)]; 344 addr = ptob(mpte.pg_pfnum) + (byte & PGOFSET); 345 putmemc(addr, getmemc(addr)^(mask<<bit)); 346 byte++; 347 i++; 348 bit -= 8; 349 } 350 if (bcr == 0) 351 return (0); 352 #ifdef notdef 353 sse: 354 if (rpof&HP_SSEI) 355 rp->hpda = rp->hpda + 1; 356 rp->hper1 = 0; 357 rp->hpcs1 = HP_RCOM|HP_GO; 358 #else 359 sse: 360 rp->hpcs1 = HP_DCLR|HP_GO; 361 bn = dkblock(bp); 362 st = &hpst[mi->mi_type]; 363 cn = bp->b_cylin; 364 sn = bn%(st->nspc) + npf + 1; 365 tn = sn/st->nsect; 366 sn %= st->nsect; 367 cn += tn/st->ntrak; 368 tn %= st->ntrak; 369 #ifdef notdef 370 if (rp->hpof&SSEI) 371 sn++; 372 #endif 373 rp->hpdc = cn; 374 rp->hpda = (tn<<8) + sn; 375 mbp->mba_sr = -1; 376 mbp->mba_var = (int)ptob(reg+1) + o; 377 rp->hpcs1 = HP_RCOM|HP_GO; 378 #endif 379 return (1); 380 } 381 382 #define DBSIZE 20 383 384 hpdump(dev) 385 dev_t dev; 386 { 387 register struct mba_info *mi; 388 register struct mba_regs *mba; 389 struct hpdevice *hpaddr; 390 char *start; 391 int num, unit; 392 register struct hpst *st; 393 394 num = maxfree; 395 start = 0; 396 unit = minor(dev) >> 3; 397 if (unit >= NHP) 398 return (ENXIO); 399 #define phys(a,b) ((b)((int)(a)&0x7fffffff)) 400 mi = phys(hpinfo[unit],struct mba_info *); 401 if (mi == 0 || mi->mi_alive == 0) 402 return (ENXIO); 403 mba = phys(mi->mi_hd, struct mba_hd *)->mh_physmba; 404 mba->mba_cr = MBAINIT; 405 hpaddr = (struct hpdevice *)&mba->mba_drv[mi->mi_drive]; 406 if ((hpaddr->hpds & HP_VV) == 0) { 407 hpaddr->hpcs1 = HP_DCLR|HP_GO; 408 hpaddr->hpcs1 = HP_PRESET|HP_GO; 409 hpaddr->hpof = HP_FMT22; 410 } 411 st = &hpst[mi->mi_type]; 412 if (dumplo < 0 || dumplo + num >= st->sizes[minor(dev)&07].nblocks) 413 return (EINVAL); 414 while (num > 0) { 415 register struct pte *hpte = mba->mba_map; 416 register int i; 417 int blk, cn, sn, tn; 418 daddr_t bn; 419 420 blk = num > DBSIZE ? DBSIZE : num; 421 bn = dumplo + btop(start); 422 cn = bn/st->nspc + st->sizes[minor(dev)&07].cyloff; 423 sn = bn%st->nspc; 424 tn = sn/st->nsect; 425 sn = sn%st->nsect; 426 hpaddr->hpdc = cn; 427 hpaddr->hpda = (tn << 8) + sn; 428 for (i = 0; i < blk; i++) 429 *(int *)hpte++ = (btop(start)+i) | PG_V; 430 mba->mba_sr = -1; 431 mba->mba_bcr = -(blk*NBPG); 432 mba->mba_var = 0; 433 hpaddr->hpcs1 = HP_WCOM | HP_GO; 434 while ((hpaddr->hpds & HP_DRY) == 0) 435 ; 436 if (hpaddr->hpds&HP_ERR) 437 return (EIO); 438 start += blk*NBPG; 439 num -= blk; 440 } 441 return (0); 442 } 443 #endif 444