1 /* hp.c 4.11 83/02/16 */ 2 3 /* 4 * RP??/RM?? disk driver 5 * with ECC handling and bad block forwarding. 6 * Also supports header io operations and 7 * commands to write check header and data. 8 */ 9 10 #include "../h/param.h" 11 #include "../h/inode.h" 12 #include "../h/fs.h" 13 #include "../h/dkbad.h" 14 15 #include "../vax/pte.h" 16 #include "../vaxmba/hpreg.h" 17 #include "../vaxmba/mbareg.h" 18 19 #include "saio.h" 20 #include "savax.h" 21 22 #define MASKREG(reg) ((reg)&0xffff) 23 24 #define MAXBADDESC 126 25 #define SECTSIZ 512 /* sector size in bytes */ 26 #define HDRSIZ 4 /* number of bytes in sector header */ 27 #define MAXECC 5 /* the maximum number of bad bits accepted in 28 * an ecc error when F_ECCLM is set */ 29 30 char hp_type[MAXNMBA*8] = { 0 }; 31 32 /* THIS SHOULD BE READ IN OFF THE PACK, PER DRIVE */ 33 short hp6_off[8] = { 0, 38, 0, -1, -1, -1, 118, -1 }; 34 short rm3_off[8] = { 0, 100, 0, -1, -1, -1, 310, -1 }; 35 short rm5_off[8] = { 0, 27, 0, 562, 589, 681, 562, 82 }; 36 short rm80_off[8] = { 0, 37, 0, -1, -1, -1, 115, 305 }; 37 short hp7_off[8] = { 0, 10, 0, 330, 340, 500, 330, 50 }; 38 short ml_off[8] = { 0, -1, -1, -1, -1, -1, -1, -1 }; 39 short si9775_off[8] = { 0, 13, 0, -1, -1, -1, 40, 441 }; 40 short si9730_off[8] = { 0, 50, 0, -1, -1, -1, -1, 155 }; 41 short hpam_off[8] = { 0, 32, 0, 668, 723, 778, 668, 98 }; 42 short hpfj_off[8] = { 0, 19, 0, -1, -1, -1, 398, 59 }; 43 /* END SHOULD BE READ IN */ 44 45 short hptypes[] = 46 { MBDT_RM03, MBDT_RM05, MBDT_RP06, MBDT_RM80, MBDT_RP05, MBDT_RP07, 47 MBDT_ML11A, MBDT_ML11B, -1/*9755*/, -1/*9730*/, -1/*Capr*/, 48 -1/* eagle */, -1/* 48 sect eagle */, MBDT_RM02, 0}; 49 50 #define RP06 (hptypes[hp_type[unit]] <= MBDT_RP06) 51 #define ML11 (hptypes[hp_type[unit]] == MBDT_ML11A) 52 #define RM80 (hptypes[hp_type[unit]] == MBDT_RM80) 53 54 u_char hp_offset[16] = { 55 HPOF_P400, HPOF_M400, HPOF_P400, HPOF_M400, 56 HPOF_P800, HPOF_M800, HPOF_P800, HPOF_M800, 57 HPOF_P1200, HPOF_M1200, HPOF_P1200, HPOF_M1200, 58 0, 0, 0, 0, 59 }; 60 61 struct st hpst[] = { 62 32, 5, 32*5, 823, rm3_off, /* RM03 */ 63 32, 19, 32*19, 823, rm5_off, /* RM05 */ 64 22, 19, 22*19, 815, hp6_off, /* RP06 */ 65 31, 14, 31*14, 559, rm80_off, /* RM80 */ 66 22, 19, 22*19, 411, hp6_off, /* RP06 */ 67 50, 32, 50*32, 630, hp7_off, /* RP07 */ 68 1, 1, 1, 1, ml_off, /* ML11A */ 69 1, 1, 1, 1, ml_off, /* ML11B */ 70 32, 40, 32*40, 843, si9775_off, /* 9775 */ 71 32, 10, 32*10, 823, si9730_off, /* 9730 */ 72 32, 16, 32*16, 1024, hpam_off, /* capricorn */ 73 43, 20, 43*20, 842, hpfj_off, /* Eagle */ 74 48, 20, 48*20, 842, hpfj_off, /* modif. eagle */ 75 1, 1, 1, 1, 0, /* rm02 - not used */ 76 }; 77 78 struct dkbad hpbad[MAXNMBA*8]; 79 int sectsiz; 80 81 /* 82 * When awaiting command completion, don't 83 * hang on to the status register since 84 * this ties up the controller. 85 */ 86 #define HPWAIT(addr) while ((((addr)->hpds)&HPDS_DRY)==0) DELAY(500); 87 88 hpopen(io) 89 register struct iob *io; 90 { 91 register unit = io->i_unit; 92 struct hpdevice *hpaddr = (struct hpdevice *)mbadrv(unit); 93 register struct st *st; 94 95 mbainit(UNITTOMBA(unit)); 96 if (hp_type[unit] == 0) { 97 register type = hpaddr->hpdt & MBDT_TYPE; 98 register int i; 99 struct iob tio; 100 101 for (i = 0; hptypes[i]; i++) 102 if (hptypes[i] == type) 103 goto found; 104 _stop("unknown drive type"); 105 found: 106 hp_type[unit] = hpmaptype(hpaddr, i, unit); 107 hpaddr->hpcs1 = HP_DCLR|HP_GO; /* init drive */ 108 hpaddr->hpcs1 = HP_PRESET|HP_GO; 109 if (!ML11) 110 hpaddr->hpof = HPOF_FMT22; 111 /* 112 * Read in the bad sector table: 113 * copy the contents of the io structure 114 * to tio for use during the bb pointer 115 * read operation. 116 */ 117 st = &hpst[i]; 118 tio = *io; 119 tio.i_bn = st->nspc * st->ncyl - st->nsect; 120 tio.i_ma = (char *)&hpbad[unit]; 121 tio.i_cc = sizeof (struct dkbad); 122 tio.i_flgs |= F_RDDATA; 123 for (i = 0; i < 5; i++) { 124 if (hpstrategy(&tio, READ) == sizeof (struct dkbad)) 125 break; 126 tio.i_bn += 2; 127 } 128 if (i == 5) { 129 printf("Unable to read bad sector table\n"); 130 for (i = 0; i < MAXBADDESC; i++) { 131 hpbad[unit].bt_bad[i].bt_cyl = -1; 132 hpbad[unit].bt_bad[i].bt_trksec = -1; 133 } 134 } 135 } 136 if (io->i_boff < 0 || io->i_boff > 7 || 137 st->off[io->i_boff]== -1) 138 _stop("hp bad minor"); 139 io->i_boff = st->off[io->i_boff] * st->nspc; 140 } 141 142 hpmaptype(hpaddr, type, unit) 143 register struct hpdevice *hpaddr; 144 unsigned type; 145 int unit; 146 { 147 int ntracks, hpsn; 148 149 /* 150 * Handle SI model byte stuff when 151 * we think it's an RM03 or RM05. 152 */ 153 if (type == 0 || type == 1) { 154 hpsn = hpaddr->hpsn; 155 if ((hpsn & SIMB_LU) != unit) 156 return (type); 157 switch ((hpsn & SIMB_MB) &~ (SIMB_S6|SIRM03|SIRM05)) { 158 case SI9775D: 159 return (8); 160 case SI9730D: 161 return (9); 162 case SI9766: 163 hpaddr->hpcs1 = HP_RECAL|HP_GO; 164 DELAY(100000); 165 return (1); 166 167 case SI9762: 168 return (0); 169 } 170 return (type); 171 } 172 /* 173 * RM03: EMULEX controller. Map to correct 174 * drive type by checking the holding 175 * register for the disk geometry. 176 */ 177 if (type == 13) { 178 hpaddr->hpcs1 = HP_NOP; 179 hpaddr->hphr = HPHR_MAXTRAK; 180 ntracks = MASKREG(hpaddr->hphr) + 1; 181 if (ntracks == 16) 182 return (10); /* AMPEX capricorn */ 183 hpaddr->hphr = HPHR_MAXSECT; 184 if (ntracks == 48) 185 return (12); /* 48 sector Eagle */ 186 if (ntracks == 43) 187 return (11); /* 43 sector Eagle */ 188 printf("RM02 with %d tracks?\n", ntracks); 189 return (type); 190 } 191 /* 192 * ML11's all map to the same type. 193 */ 194 if (type == 6 || type == 7) 195 return (6); 196 return (type); 197 } 198 199 int ssect; /* set to 1 if we are on a track with skip sectors */ 200 201 hpstrategy(io, func) 202 register struct iob *io; 203 { 204 register unit = io->i_unit; 205 struct mba_regs *mba = mbamba(unit); 206 daddr_t bn; 207 struct hpdevice *hpaddr = (struct hpdevice *)mbadrv(unit); 208 struct st *st = &hpst[hp_type[unit]]; 209 int cn, tn, sn, bytecnt, bytesleft; 210 daddr_t startblock; 211 char *membase; 212 int er1, er2, hprecal; 213 214 sectsiz = SECTSIZ; 215 if ((io->i_flgs & (F_HDR|F_HCHECK)) != 0) 216 sectsiz += HDRSIZ; 217 if ((hpaddr->hpds & HPDS_VV) == 0) { 218 hpaddr->hpcs1 = HP_DCLR|HP_GO; 219 hpaddr->hpcs1 = HP_PRESET|HP_GO; 220 if (!ML11) 221 hpaddr->hpof = HPOF_FMT22; 222 } 223 io->i_errcnt = 0; 224 ssect = 0; 225 bytecnt = io->i_cc; 226 membase = io->i_ma; 227 startblock = io->i_bn; 228 hprecal = 0; 229 restart: 230 bn = io->i_bn; 231 cn = bn/st->nspc; 232 sn = bn%st->nspc; 233 tn = sn/st->nsect; 234 sn = sn%st->nsect + ssect; 235 236 HPWAIT(hpaddr); 237 mba->mba_sr = -1; 238 if (ML11) 239 hpaddr->hpda = bn; 240 else { 241 hpaddr->hpdc = cn; 242 hpaddr->hpda = (tn << 8) + sn; 243 } 244 if (mbastart(io, func) != 0) /* start transfer */ 245 return (-1); 246 HPWAIT(hpaddr); 247 if ((hpaddr->hpds&HPDS_ERR) == 0 && (mba->mba_sr&MBSR_EBITS) == 0) 248 return (bytecnt); 249 250 /* ------- error handling ------- */ 251 252 if (bytesleft = MASKREG(mba->mba_bcr>>16)) 253 bytesleft |= 0xffff0000; /* sign ext */ 254 bn = io->i_bn + (io->i_cc + bytesleft)/sectsiz; 255 cn = bn/st->nspc; 256 sn = bn%st->nspc; 257 tn = sn/st->nsect; 258 sn = sn%st->nsect; 259 er1 = MASKREG(hpaddr->hper1); 260 er2 = MASKREG(hpaddr->hper2); 261 #ifdef HPDEBUG 262 printf("hp error: (cyl,trk,sec)=(%d,%d,%d) ds=%b \n", 263 cn, tn, sn, MASKREG(hpaddr->hpds), HPDS_BITS); 264 printf("er1=%b er2=%b", er1, HPER1_BITS, er2, HPER2_BITS); 265 printf("\nbytes left: %d, of 0x%x, da 0x%x",-bytesleft, 266 hpaddr->hpof, hpaddr->hpda); 267 printf("\n"); 268 #endif 269 if (er1 & HPER1_HCRC) { 270 er1 &= ~(HPER1_HCE|HPER1_FER); 271 er2 &= ~HPER2_BSE; 272 } 273 if (er1&HPER1_WLE) { 274 printf("hp%d: write locked\n", unit); 275 return (-1); 276 } 277 if (MASKREG(er1) == HPER1_FER && RP06) 278 goto badsect; 279 if (++io->i_errcnt > 27 || (er1 & HPER1_HARD) || 280 (!ML11 && (er2 & HPER2_HARD))) { 281 hard0: 282 io->i_error = EHER; 283 if (mba->mba_sr & (MBSR_WCKUP|MBSR_WCKLWR)) 284 io->i_error = EWCK; 285 hard: 286 io->i_errblk = bn + ssect; 287 printf("hp error: (cyl,trk,sec)=(%d,%d,%d) ds=%b \n", 288 cn, tn, sn, MASKREG(hpaddr->hpds), HPDS_BITS); 289 printf("er1=%b er2=%b", er1, HPER1_BITS, er2, HPER2_BITS); 290 if (hpaddr->hpmr) 291 printf(" mr1=%o", MASKREG(hpaddr->hpmr)); 292 if (hpaddr->hpmr2) 293 printf(" mr2=%o", MASKREG(hpaddr->hpmr2)); 294 #ifdef HPDEBUG 295 printf("dc: %d, da: 0x%x",MASKREG(hpaddr->hpdc), 296 MASKREG(hpaddr->hpda)); 297 #endif 298 hpaddr->hpcs1 = HP_DCLR|HP_GO; 299 printf("\n"); 300 return (-1); 301 302 } 303 if ((er2 & HPER2_BSE) && !ML11) { 304 badsect: 305 if (!ssect && (er2&HPER2_SSE)) 306 goto skipsect; 307 if (io->i_flgs & F_NBSF) { 308 io->i_error = EBSE; 309 goto hard; 310 } 311 if (hpecc(io, BSE) == 0) 312 goto success; 313 io->i_error = EBSE; 314 goto hard; 315 } 316 if (RM80 && er2&HPER2_SSE) { 317 skipsect: 318 (void) hpecc(io, SSE); 319 ssect = 1; 320 goto success; 321 } 322 if ((er1 & (HPER1_DCK|HPER1_ECH)) == HPER1_DCK) { 323 if (hpecc(io, ECC) == 0) 324 goto success; 325 io->i_error = EECC; 326 return (-1); 327 } 328 if (ML11 && (io->i_errcnt >= 16)) 329 goto hard0; 330 /* fall thru to retry */ 331 hpaddr->hpcs1 = HP_DCLR|HP_GO; 332 HPWAIT(hpaddr); 333 if (((io->i_errcnt&07) == 4) ) { 334 hpaddr->hpcs1 = HP_RECAL|HP_GO; 335 hprecal = 1; 336 goto again; 337 } 338 switch (hprecal) { 339 340 case 1: 341 hpaddr->hpdc = cn; 342 hpaddr->hpcs1 = HP_SEEK|HP_GO; 343 hprecal = 2; 344 goto again; 345 346 case 2: 347 if (io->i_errcnt < 16 || (io->i_flgs & F_READ) == 0) 348 goto donerecal; 349 hpaddr->hpof = hp_offset[io->i_errcnt & 017]|HPOF_FMT22; 350 hpaddr->hpcs1 = HP_OFFSET|HP_GO; 351 hprecal = 3; 352 goto again; 353 354 case 3: 355 donerecal: 356 hprecal = 0; 357 goto again; 358 } 359 if (io->i_errcnt >= 16) { 360 hpaddr->hpcs1 = HP_RTC|HP_GO; 361 while (hpaddr->hpds & HPDS_PIP) 362 ; 363 } 364 goto again; 365 366 success: /* continue with the next block */ 367 bn++; 368 if ((bn-startblock) * sectsiz < bytecnt) { 369 again: /* re-read same block */ 370 io->i_bn = bn; 371 io->i_ma = membase + (io->i_bn - startblock)*sectsiz; 372 io->i_cc = bytecnt - (io->i_bn - startblock)*sectsiz; 373 #ifdef HPDEBUG 374 printf("restart: bl %d, byte %d, mem 0x%x hprecal %d\n", 375 io->i_bn, io->i_cc, io->i_ma, hprecal); 376 #endif 377 goto restart; 378 } 379 return (bytecnt); 380 } 381 382 hpecc(io, flag) 383 register struct iob *io; 384 int flag; 385 { 386 register unit = io->i_unit; 387 register struct mba_regs *mbp = mbamba(unit); 388 register struct hpdevice *rp = (struct hpdevice *)mbadrv(unit); 389 register struct st *st = &hpst[hp_type[unit]]; 390 int npf, bn, cn, tn, sn, bcr; 391 392 if (bcr = MASKREG(mbp->mba_bcr>>16)) 393 bcr |= 0xffff0000; /* sxt */ 394 npf = (bcr + io->i_cc) / sectsiz; /* # sectors read */ 395 bn = io->i_bn + npf + ssect; /* physical block #*/ 396 switch (flag) { 397 398 case ECC: { 399 register int i; 400 caddr_t addr; 401 int bit, byte, mask, ecccnt = 0; 402 403 printf("hp%d: soft ecc sn%d\n", unit, bn); 404 mask = MASKREG(rp->hpec2); 405 i = MASKREG(rp->hpec1) - 1; /* -1 makes 0 origin */ 406 bit = i&07; 407 i = (i&~07)>>3; 408 byte = i; 409 rp->hpcs1 = HP_DCLR | HP_GO; 410 while (i <sectsiz && npf*sectsiz + i < io->i_cc && bit > -11) { 411 addr = io->i_ma + (npf*sectsiz) + byte; 412 #ifdef HPECCDEBUG 413 printf("addr %x old:%x ",addr, (*addr&0xff)); 414 #endif 415 if ((io->i_flgs & (F_CHECK|F_HCHECK)) == 0) 416 *addr ^= (mask << bit); /* don't 'correct' mem- 417 * ory during Wcheck */ 418 #ifdef HPECCDEBUG 419 printf("new:%x\n",(*addr&0xff)); 420 #endif 421 byte++; 422 i++; 423 bit -= 8; 424 if ((io->i_flgs & F_ECCLM) && ecccnt++ >= MAXECC) 425 return (1); 426 } 427 return(0); 428 } 429 430 /* 431 * Skip sector error. 432 * Set skip-sector-inhibit and 433 * read next sector 434 */ 435 case SSE: 436 rp->hpcs1 = HP_DCLR | HP_GO; 437 HPWAIT(rp); 438 rp->hpof |= HPOF_SSEI; 439 return (0); 440 441 case BSE: { 442 int bbn; 443 444 rp->hpcs1 = HP_DCLR | HP_GO; 445 #ifdef HPDEBUG 446 printf("hpecc: BSE @ bn %d\n", bn); 447 #endif 448 cn = bn/st->nspc; 449 sn = bn%st->nspc; 450 tn = sn/st->nsect; 451 sn = sn%st->nsect; 452 bcr += sectsiz; 453 if ((bbn = isbad(&hpbad[unit], cn, tn, sn)) < 0) 454 return (1); 455 bbn = st->ncyl*st->nspc - st->nsect - 1 - bbn; 456 cn = bbn/st->nspc; 457 sn = bbn%st->nspc; 458 tn = sn/st->nsect; 459 sn = sn%st->nsect; 460 io->i_cc = sectsiz; 461 io->i_ma += npf*sectsiz; 462 #ifdef HPDEBUG 463 printf("revector to cn %d tn %d sn %d mem: 0x%x\n", 464 cn, tn, sn, io->i_ma); 465 #endif 466 rp->hpof &= ~HPOF_SSEI; /* clear skip sector inhibit if set */ 467 mbp->mba_sr = -1; 468 rp->hpdc = cn; 469 rp->hpda = (tn<<8) + sn; 470 mbastart(io,io->i_flgs); 471 io->i_errcnt = 0; /* error has been corrected */ 472 HPWAIT(rp); 473 return (rp->hpds&HPDS_ERR); 474 } 475 } 476 printf("hpecc: flag=%d\n", flag); 477 return (1); 478 } 479 /*ARGSUSED*/ 480 hpioctl(io, cmd, arg) 481 struct iob *io; 482 int cmd; 483 caddr_t arg; 484 { 485 register unit = io->i_unit; 486 struct st *st = &hpst[hp_type[unit]], *tmp; 487 struct mba_drv *drv = mbadrv(unit); 488 489 switch(cmd) { 490 491 case SAIODEVDATA: 492 if ((drv->mbd_dt&MBDT_TAP) == 0) { 493 tmp = (struct st *)arg; 494 *tmp = *st; 495 return (0); 496 } 497 return (ECMD); 498 499 case SAIOSSI: /* skip-sector-inhibit */ 500 if (drv->mbd_dt&MBDT_TAP) 501 return (ECMD); 502 if ((io->i_flgs&F_SSI) == 0) { 503 /* make sure this is done once only */ 504 io->i_flgs |= F_SSI; 505 st->nsect++; 506 st->nspc += st->ntrak; 507 } 508 return (0); 509 510 case SAIONOSSI: /* remove skip-sector-inhibit */ 511 if (io->i_flgs & F_SSI) { 512 io->i_flgs &= ~F_SSI; 513 drv->mbd_of &= ~HPOF_SSEI; 514 st->nsect--; 515 st->nspc -= st->ntrak; 516 } 517 return(0); 518 519 case SAIOSSDEV: /* drive have skip sector? */ 520 return (RM80 ? 0 : ECMD); 521 } 522 return (ECMD); 523 } 524