hdc9224.c revision 1.51.18.3
1 /* $NetBSD: hdc9224.c,v 1.51.18.3 2017/12/03 11:36:48 jdolecek Exp $ */ 2 /* 3 * Copyright (c) 1996 Ludd, University of Lule}, Sweden. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Ludd by Bertram Barth. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* 30 * with much help from (in alphabetical order): 31 * Jeremy 32 * Roger Ivie 33 * Rick Macklem 34 * Mike Young 35 * 36 * Rewritten by Ragge 25 Jun 2000. New features: 37 * - Uses interrupts instead of polling to signal ready. 38 * - Can cooperate with the SCSI routines WRT. the DMA area. 39 * 40 * TODO: 41 * - Floppy support missing. 42 * - Bad block forwarding missing. 43 * - Statistics collection. 44 */ 45 #undef RDDEBUG 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: hdc9224.c,v 1.51.18.3 2017/12/03 11:36:48 jdolecek Exp $"); 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/buf.h> 53 #include <sys/bufq.h> 54 #include <sys/cpu.h> 55 #include <sys/conf.h> 56 #include <sys/device.h> 57 #include <sys/disklabel.h> 58 #include <sys/disk.h> 59 #include <sys/file.h> 60 #include <sys/ioctl.h> 61 #include <sys/proc.h> 62 #include <sys/stat.h> 63 #include <sys/syslog.h> 64 65 #include <uvm/uvm_extern.h> 66 67 #include <ufs/ufs/dinode.h> /* For BBSIZE */ 68 #include <ufs/ffs/fs.h> 69 70 #include <machine/sid.h> 71 #include <machine/ka410.h> 72 #include <machine/vsbus.h> 73 #include <machine/rpb.h> 74 #include <machine/scb.h> 75 76 #include <dev/mscp/mscp.h> /* For DEC disk encoding */ 77 78 #include <vax/vsa/hdc9224.h> 79 80 #include "ioconf.h" 81 #include "locators.h" 82 83 84 /* 85 * on-disk geometry block 86 */ 87 #define _aP __attribute__ ((packed)) /* force byte-alignment */ 88 struct rdgeom { 89 char mbz[10]; /* 10 bytes of zero */ 90 long xbn_count _aP; /* number of XBNs */ 91 long dbn_count _aP; /* number of DBNs */ 92 long lbn_count _aP; /* number of LBNs (Logical-Block-Numbers) */ 93 long rbn_count _aP; /* number of RBNs (Replacement-Block-Numbers) */ 94 short nspt; /* number of sectors per track */ 95 short ntracks; /* number of tracks */ 96 short ncylinders; /* number of cylinders */ 97 short precomp; /* first cylinder for write precompensation */ 98 short reduced; /* first cylinder for reduced write current */ 99 short seek_rate; /* seek rate or zero for buffered seeks */ 100 short crc_eec; /* 0 if CRC, 1 if ECC is being used */ 101 short rct; /* "replacement control table" (RCT) */ 102 short rct_ncopies; /* number of copies of the RCT */ 103 long media_id _aP; /* media identifier */ 104 short interleave; /* sector-to-sector interleave */ 105 short headskew; /* head-to-head skew */ 106 short cylskew; /* cylinder-to-cylinder skew */ 107 short gap0_size; /* size of GAP 0 in the MFM format */ 108 short gap1_size; /* size of GAP 1 in the MFM format */ 109 short gap2_size; /* size of GAP 2 in the MFM format */ 110 short gap3_size; /* size of GAP 3 in the MFM format */ 111 short sync_value; /* sync value used when formatting */ 112 char reserved[32]; /* reserved for use by the RQDX formatter */ 113 short serial_number; /* serial number */ 114 #if 0 /* we don't need these 412 useless bytes ... */ 115 char fill[412-2]; /* Filler bytes to the end of the block */ 116 short checksum; /* checksum over the XBN */ 117 #endif 118 }; 119 120 /* 121 * Software status 122 */ 123 struct rdsoftc { 124 device_t sc_dev; /* must be here! (pseudo-OOP:) */ 125 struct hdcsoftc *sc_hdc; 126 struct disk sc_disk; /* disklabel etc. */ 127 struct rdgeom sc_xbn; /* on-disk geometry information */ 128 int sc_drive; /* physical unit number */ 129 }; 130 131 struct hdcsoftc { 132 device_t sc_dev; /* must be here (pseudo-OOP:) */ 133 struct evcnt sc_intrcnt; 134 struct vsbus_dma sc_vd; 135 vaddr_t sc_regs; /* register addresses */ 136 struct bufq_state *sc_q; 137 struct buf *sc_active; 138 struct hdc9224_UDCreg sc_creg; /* (command) registers to be written */ 139 struct hdc9224_UDCreg sc_sreg; /* (status) registers being read */ 140 void * sc_dmabase; /* */ 141 int sc_dmasize; 142 void *sc_bufaddr; /* Current in-core address */ 143 int sc_diskblk; /* Current block on disk */ 144 int sc_bytecnt; /* How much left to transfer */ 145 int sc_xfer; /* Current transfer size */ 146 int sc_retries; 147 volatile u_char sc_status; /* last status from interrupt */ 148 char sc_intbit; 149 }; 150 151 struct hdc_attach_args { 152 int ha_drive; 153 }; 154 155 /* 156 * prototypes for (almost) all the internal routines 157 */ 158 static int hdcmatch(device_t, cfdata_t, void *); 159 static void hdcattach(device_t, device_t, void *); 160 static int hdcprint(void *, const char *); 161 static int rdmatch(device_t, cfdata_t, void *); 162 static void rdattach(device_t, device_t, void *); 163 static void hdcintr(void *); 164 static int hdc_command(struct hdcsoftc *, int); 165 static void rd_readgeom(struct hdcsoftc *, struct rdsoftc *); 166 #ifdef RDDEBUG 167 static void hdc_printgeom( struct rdgeom *); 168 #endif 169 static void hdc_writeregs(struct hdcsoftc *); 170 static void hdcstart(struct hdcsoftc *, struct buf *); 171 static int hdc_rdselect(struct hdcsoftc *, int); 172 static void rdmakelabel(struct disklabel *, struct rdgeom *); 173 static void hdc_writeregs(struct hdcsoftc *); 174 static void hdc_readregs(struct hdcsoftc *); 175 static void hdc_qstart(void *); 176 177 CFATTACH_DECL_NEW(hdc, sizeof(struct hdcsoftc), 178 hdcmatch, hdcattach, NULL, NULL); 179 180 CFATTACH_DECL_NEW(rd, sizeof(struct rdsoftc), 181 rdmatch, rdattach, NULL, NULL); 182 183 static dev_type_open(rdopen); 184 static dev_type_close(rdclose); 185 static dev_type_read(rdread); 186 static dev_type_write(rdwrite); 187 static dev_type_ioctl(rdioctl); 188 static dev_type_strategy(rdstrategy); 189 static dev_type_size(rdpsize); 190 191 const struct bdevsw rd_bdevsw = { 192 .d_open = rdopen, 193 .d_close = rdclose, 194 .d_strategy = rdstrategy, 195 .d_ioctl = rdioctl, 196 .d_dump = nulldump, 197 .d_psize = rdpsize, 198 .d_discard = nodiscard, 199 .d_flag = D_DISK 200 }; 201 202 const struct cdevsw rd_cdevsw = { 203 .d_open = rdopen, 204 .d_close = rdclose, 205 .d_read = rdread, 206 .d_write = rdwrite, 207 .d_ioctl = rdioctl, 208 .d_stop = nostop, 209 .d_tty = notty, 210 .d_poll = nopoll, 211 .d_mmap = nommap, 212 .d_kqfilter = nokqfilter, 213 .d_discard = nodiscard, 214 .d_flag = D_DISK 215 }; 216 217 /* At least 0.7 uS between register accesses */ 218 static int rd_dmasize, inq = 0; 219 static volatile int u; 220 #define WAIT __asm("movl %0,%0;movl %0,%0;movl %0,%0; movl %0,%0" :: "m"(u)) 221 222 #define HDC_WREG(x) *(volatile char *)(sc->sc_regs) = (x) 223 #define HDC_RREG *(volatile char *)(sc->sc_regs) 224 #define HDC_WCMD(x) *(volatile char *)(sc->sc_regs + 4) = (x) 225 #define HDC_RSTAT *(volatile char *)(sc->sc_regs + 4) 226 227 static void 228 rdminphys(struct buf *bp) 229 { 230 if (bp->b_bcount > rd_dmasize) 231 bp->b_bcount = rd_dmasize; 232 } 233 234 const struct dkdriver rd_dkdriver = { rdstrategy, rdminphys }; 235 /* 236 * new-config's hdcmatch() is similiar to old-config's hdcprobe(), 237 * thus we probe for the existence of the controller and reset it. 238 * NB: we can't initialize the controller yet, since space for hdcsoftc 239 * is not yet allocated. Thus we do this in hdcattach()... 240 */ 241 int 242 hdcmatch(device_t parent, cfdata_t cf, void *aux) 243 { 244 struct vsbus_attach_args * const va = aux; 245 volatile char * const hdc_csr = (volatile char *)va->va_addr; 246 int i; 247 248 u = 8; /* !!! - GCC */ 249 250 if (vax_boardtype == VAX_BTYP_49 || vax_boardtype == VAX_BTYP_46 251 || vax_boardtype == VAX_BTYP_48 || vax_boardtype == VAX_BTYP_53) 252 return 0; 253 254 hdc_csr[4] = DKC_CMD_RESET; /* reset chip */ 255 for (i = 0; i < 1000; i++) { 256 DELAY(1000); 257 if (hdc_csr[4] & DKC_ST_DONE) 258 break; 259 } 260 if (i == 100) 261 return 0; /* No response to reset */ 262 263 hdc_csr[4] = DKC_CMD_SETREGPTR|UDC_TERM; 264 WAIT; 265 hdc_csr[0] = UDC_TC_CRCPRE|UDC_TC_INTDONE; 266 WAIT; 267 hdc_csr[4] = DKC_CMD_DRDESELECT; /* Should be harmless */ 268 DELAY(1000); 269 return (1); 270 } 271 272 int 273 hdcprint(void *aux, const char *name) 274 { 275 struct hdc_attach_args * const ha = aux; 276 277 if (name) 278 aprint_normal ("RD?? at %s drive %d", name, ha->ha_drive); 279 return UNCONF; 280 } 281 282 /* 283 * hdc_attach() probes for all possible devices 284 */ 285 void 286 hdcattach(device_t parent, device_t self, void *aux) 287 { 288 struct vsbus_attach_args * const va = aux; 289 struct hdcsoftc * const sc = device_private(self); 290 struct hdc_attach_args ha; 291 int status, i; 292 293 aprint_normal("\n"); 294 295 sc->sc_dev = self; 296 297 /* 298 * Get interrupt vector, enable instrumentation. 299 */ 300 scb_vecalloc(va->va_cvec, hdcintr, sc, SCB_ISTACK, &sc->sc_intrcnt); 301 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 302 device_xname(self), "intr"); 303 304 sc->sc_regs = vax_map_physmem(va->va_paddr, 1); 305 sc->sc_dmabase = (void *)va->va_dmaaddr; 306 sc->sc_dmasize = va->va_dmasize; 307 sc->sc_intbit = va->va_maskno; 308 rd_dmasize = min(MAXPHYS, sc->sc_dmasize); /* Used in rdminphys */ 309 310 sc->sc_vd.vd_go = hdc_qstart; 311 sc->sc_vd.vd_arg = sc; 312 /* 313 * Reset controller. 314 */ 315 HDC_WCMD(DKC_CMD_RESET); 316 DELAY(1000); 317 status = HDC_RSTAT; 318 if (status != (DKC_ST_DONE|DKC_TC_SUCCESS)) { 319 aprint_error_dev(self, "RESET failed, status 0x%x\n", status); 320 return; 321 } 322 bufq_alloc(&sc->sc_q, "disksort", BUFQ_SORT_CYLINDER); 323 324 /* 325 * now probe for all possible hard drives 326 */ 327 for (i = 0; i < 4; i++) { 328 if (i == 2) /* Floppy, needs special handling */ 329 continue; 330 HDC_WCMD(DKC_CMD_DRSELECT | i); 331 DELAY(1000); 332 status = HDC_RSTAT; 333 ha.ha_drive = i; 334 if ((status & DKC_ST_TERMCOD) == DKC_TC_SUCCESS) 335 config_found(self, (void *)&ha, hdcprint); 336 } 337 } 338 339 /* 340 * rdmatch() probes for the existence of a RD-type disk/floppy 341 */ 342 int 343 rdmatch(device_t parent, cfdata_t cf, void *aux) 344 { 345 struct hdc_attach_args * const ha = aux; 346 347 if (cf->cf_loc[HDCCF_DRIVE] != HDCCF_DRIVE_DEFAULT && 348 cf->cf_loc[HDCCF_DRIVE] != ha->ha_drive) 349 return 0; 350 351 if (ha->ha_drive == 2) /* Always floppy, not supported */ 352 return 0; 353 354 return 1; 355 } 356 357 void 358 rdattach(device_t parent, device_t self, void *aux) 359 { 360 struct hdcsoftc * const sc = device_private(parent); 361 struct rdsoftc * const rd = device_private(self); 362 struct hdc_attach_args * const ha = aux; 363 struct disklabel *dl; 364 const char *msg; 365 366 rd->sc_dev = self; 367 rd->sc_drive = ha->ha_drive; 368 rd->sc_hdc = sc; 369 /* 370 * Initialize and attach the disk structure. 371 */ 372 disk_init(&rd->sc_disk, device_xname(rd->sc_dev), &rd_dkdriver); 373 disk_attach(&rd->sc_disk); 374 375 /* 376 * if it's not a floppy then evaluate the on-disk geometry. 377 * if necessary correct the label... 378 */ 379 rd_readgeom(sc, rd); 380 disk_printtype(rd->sc_drive, rd->sc_xbn.media_id); 381 dl = rd->sc_disk.dk_label; 382 rdmakelabel(dl, &rd->sc_xbn); 383 msg = readdisklabel(MAKEDISKDEV(cdevsw_lookup_major(&rd_cdevsw), 384 device_unit(rd->sc_dev), RAW_PART), 385 rdstrategy, dl, NULL); 386 if (msg) 387 aprint_normal_dev(self, "%s: size %u sectors", 388 msg, dl->d_secperunit); 389 else 390 aprint_normal_dev(self, "size %u sectors\n", dl->d_secperunit); 391 #ifdef RDDEBUG 392 hdc_printgeom(&rd->sc_xbn); 393 #endif 394 } 395 396 void 397 hdcintr(void *arg) 398 { 399 struct hdcsoftc * const sc = arg; 400 struct buf *bp; 401 402 sc->sc_status = HDC_RSTAT; 403 if (sc->sc_active == 0) 404 return; /* Complain? */ 405 406 if ((sc->sc_status & (DKC_ST_INTPEND|DKC_ST_DONE)) != 407 (DKC_ST_INTPEND|DKC_ST_DONE)) 408 return; /* Why spurious ints sometimes??? */ 409 410 bp = sc->sc_active; 411 sc->sc_active = 0; 412 if ((sc->sc_status & DKC_ST_TERMCOD) != DKC_TC_SUCCESS) { 413 int i; 414 u_char *g = (u_char *)&sc->sc_sreg; 415 416 if (sc->sc_retries++ < 3) { /* Allow 3 retries */ 417 hdcstart(sc, bp); 418 return; 419 } 420 aprint_error_dev(sc->sc_dev, "failed, status 0x%x\n", 421 sc->sc_status); 422 hdc_readregs(sc); 423 for (i = 0; i < 10; i++) 424 aprint_error("%i: %x\n", i, g[i]); 425 bp->b_error = ENXIO; 426 bp->b_resid = bp->b_bcount; 427 biodone(bp); 428 vsbus_dma_intr(); 429 return; 430 } 431 432 if (bp->b_flags & B_READ) { 433 vsbus_copytoproc(bp->b_proc, sc->sc_dmabase, sc->sc_bufaddr, 434 sc->sc_xfer); 435 } 436 sc->sc_diskblk += (sc->sc_xfer/DEV_BSIZE); 437 sc->sc_bytecnt -= sc->sc_xfer; 438 sc->sc_bufaddr = (char *)sc->sc_bufaddr + sc->sc_xfer; 439 440 if (sc->sc_bytecnt == 0) { /* Finished transfer */ 441 biodone(bp); 442 vsbus_dma_intr(); 443 } else 444 hdcstart(sc, bp); 445 } 446 447 /* 448 * 449 */ 450 void 451 rdstrategy(struct buf *bp) 452 { 453 struct rdsoftc *rd; 454 struct hdcsoftc *sc; 455 struct disklabel *lp; 456 int s; 457 458 if ((rd = device_lookup_private(&rd_cd, DISKUNIT(bp->b_dev))) == NULL) { 459 bp->b_error = ENXIO; 460 goto done; 461 } 462 sc = rd->sc_hdc; 463 464 lp = rd->sc_disk.dk_label; 465 if ((bounds_check_with_label(&rd->sc_disk, bp, 1)) <= 0) 466 goto done; 467 468 if (bp->b_bcount == 0) 469 goto done; 470 471 bp->b_rawblkno = 472 bp->b_blkno + lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 473 bp->b_cylinder = bp->b_rawblkno / lp->d_secpercyl; 474 475 s = splbio(); 476 bufq_put(sc->sc_q, bp); 477 if (inq == 0) { 478 inq = 1; 479 vsbus_dma_start(&sc->sc_vd); 480 } 481 splx(s); 482 return; 483 484 done: biodone(bp); 485 } 486 487 void 488 hdc_qstart(void *arg) 489 { 490 struct hdcsoftc * const sc = arg; 491 492 inq = 0; 493 494 hdcstart(sc, 0); 495 if (bufq_peek(sc->sc_q)) { 496 vsbus_dma_start(&sc->sc_vd); /* More to go */ 497 inq = 1; 498 } 499 } 500 501 void 502 hdcstart(struct hdcsoftc *sc, struct buf *ob) 503 { 504 struct hdc9224_UDCreg * const p = &sc->sc_creg; 505 struct disklabel *lp; 506 struct rdsoftc *rd; 507 struct buf *bp; 508 int cn, sn, tn, bn, blks; 509 510 if (sc->sc_active) 511 return; /* Already doing something */ 512 513 if (ob == 0) { 514 bp = bufq_get(sc->sc_q); 515 if (bp == NULL) 516 return; /* Nothing to do */ 517 sc->sc_bufaddr = bp->b_data; 518 sc->sc_diskblk = bp->b_rawblkno; 519 sc->sc_bytecnt = bp->b_bcount; 520 sc->sc_retries = 0; 521 bp->b_resid = 0; 522 } else 523 bp = ob; 524 525 rd = device_lookup_private(&rd_cd, DISKUNIT(bp->b_dev)); 526 hdc_rdselect(sc, rd->sc_drive); 527 sc->sc_active = bp; 528 529 bn = sc->sc_diskblk; 530 lp = rd->sc_disk.dk_label; 531 if (bn) { 532 cn = bn / lp->d_secpercyl; 533 sn = bn % lp->d_secpercyl; 534 tn = sn / lp->d_nsectors; 535 sn = sn % lp->d_nsectors; 536 } else 537 cn = sn = tn = 0; 538 539 cn++; /* first cylinder is reserved */ 540 541 memset(p, 0, sizeof(struct hdc9224_UDCreg)); 542 543 /* 544 * Tricky thing: the controller do itself only increase the sector 545 * number, not the track or cylinder number. Therefore the driver 546 * is not allowed to have transfers that crosses track boundaries. 547 */ 548 blks = sc->sc_bytecnt/DEV_BSIZE; 549 if ((sn + blks) > lp->d_nsectors) 550 blks = lp->d_nsectors - sn; 551 552 p->udc_dsect = sn; 553 p->udc_dcyl = cn & 0xff; 554 p->udc_dhead = ((cn >> 4) & 0x70) | tn; 555 p->udc_scnt = blks; 556 557 p->udc_rtcnt = UDC_RC_RTRYCNT; 558 p->udc_mode = UDC_MD_HDD; 559 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWRFLT; 560 hdc_writeregs(sc); 561 562 /* Count up vars */ 563 sc->sc_xfer = blks * DEV_BSIZE; 564 565 (void)HDC_RSTAT; /* Avoid pending interrupts */ 566 WAIT; 567 vsbus_clrintr(sc->sc_intbit); /* Clear pending int's */ 568 569 if (bp->b_flags & B_READ) { 570 HDC_WCMD(DKC_CMD_READ_HDD); 571 } else { 572 vsbus_copyfromproc(bp->b_proc, sc->sc_bufaddr, sc->sc_dmabase, 573 sc->sc_xfer); 574 HDC_WCMD(DKC_CMD_WRITE_HDD); 575 } 576 } 577 578 void 579 rd_readgeom(struct hdcsoftc *sc, struct rdsoftc *rd) 580 { 581 struct hdc9224_UDCreg * const p = &sc->sc_creg; 582 583 hdc_rdselect(sc, rd->sc_drive); /* select drive right now */ 584 585 memset(p, 0, sizeof(*p)); 586 587 p->udc_scnt = 1; 588 p->udc_rtcnt = UDC_RC_RTRYCNT; 589 p->udc_mode = UDC_MD_HDD; 590 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWPROT; 591 hdc_writeregs(sc); 592 sc->sc_status = 0; 593 HDC_WCMD(DKC_CMD_READ_HDD|2); 594 while ((sc->sc_status & DKC_ST_INTPEND) == 0) 595 ; 596 memcpy(&rd->sc_xbn, sc->sc_dmabase, sizeof(struct rdgeom)); 597 } 598 599 #ifdef RDDEBUG 600 /* 601 * display the contents of the on-disk geometry structure 602 */ 603 void 604 hdc_printgeom(struct rdgeom *p) 605 { 606 printf ("**DiskData** XBNs: %ld, DBNs: %ld, LBNs: %ld, RBNs: %ld\n", 607 p->xbn_count, p->dbn_count, p->lbn_count, p->rbn_count); 608 printf ("sec/track: %d, tracks: %d, cyl: %d, precomp/reduced: %d/%d\n", 609 p->nspt, p->ntracks, p->ncylinders, p->precomp, p->reduced); 610 printf ("seek-rate: %d, crc/eec: %s, RCT: %d, RCT-copies: %d\n", 611 p->seek_rate, p->crc_eec?"EEC":"CRC", p->rct, p->rct_ncopies); 612 printf ("media-ID: %lx, interleave: %d, headskew: %d, cylskew: %d\n", 613 p->media_id, p->interleave, p->headskew, p->cylskew); 614 printf ("gap0: %d, gap1: %d, gap2: %d, gap3: %d, sync-value: %d\n", 615 p->gap0_size, p->gap1_size, p->gap2_size, p->gap3_size, 616 p->sync_value); 617 } 618 #endif 619 620 /* 621 * Return the size of a partition, if known, or -1 if not. 622 */ 623 int 624 rdpsize(dev_t dev) 625 { 626 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 627 const int part = DISKPART(dev); 628 629 if (rd == NULL || part >= rd->sc_disk.dk_label->d_npartitions) 630 return -1; 631 632 return rd->sc_disk.dk_label->d_partitions[part].p_size * 633 (rd->sc_disk.dk_label->d_secsize / DEV_BSIZE); 634 } 635 636 /* 637 * 638 */ 639 int 640 rdopen(dev_t dev, int flag, int fmt, struct lwp *l) 641 { 642 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 643 const int part = DISKPART(dev); 644 645 if (rd == NULL || part >= rd->sc_disk.dk_label->d_npartitions) 646 return ENXIO; 647 648 switch (fmt) { 649 case S_IFCHR: 650 rd->sc_disk.dk_copenmask |= (1 << part); 651 break; 652 case S_IFBLK: 653 rd->sc_disk.dk_bopenmask |= (1 << part); 654 break; 655 } 656 rd->sc_disk.dk_openmask = 657 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 658 659 return 0; 660 } 661 662 /* 663 * 664 */ 665 int 666 rdclose(dev_t dev, int flag, int fmt, struct lwp *l) 667 { 668 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 669 const int part = DISKPART(dev); 670 671 switch (fmt) { 672 case S_IFCHR: 673 rd->sc_disk.dk_copenmask &= ~(1 << part); 674 break; 675 case S_IFBLK: 676 rd->sc_disk.dk_bopenmask &= ~(1 << part); 677 break; 678 } 679 rd->sc_disk.dk_openmask = 680 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 681 682 return (0); 683 } 684 685 /* 686 * 687 */ 688 int 689 rdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 690 { 691 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 692 struct disklabel * const lp = rd->sc_disk.dk_label; 693 int error; 694 695 error = disk_ioctl(&rd->sc_disk, dev, cmd, addr, flag, l); 696 if (error != EPASSTHROUGH) 697 return error; 698 else 699 error = 0; 700 701 switch (cmd) { 702 case DIOCWDINFO: 703 case DIOCSDINFO: 704 if ((flag & FWRITE) == 0) 705 return EBADF; 706 error = (cmd == DIOCSDINFO ? 707 setdisklabel(lp, (struct disklabel *)addr, 0, 0) : 708 writedisklabel(dev, rdstrategy, lp, 0)); 709 break; 710 711 case DIOCGDEFLABEL: 712 memset(lp, 0, sizeof(*lp)); 713 rdmakelabel(lp, &rd->sc_xbn); 714 break; 715 716 case DIOCWLABEL: 717 if ((flag & FWRITE) == 0) 718 error = EBADF; 719 break; 720 721 default: 722 error = ENOTTY; 723 } 724 return error; 725 } 726 727 /* 728 * 729 */ 730 int 731 rdread(dev_t dev, struct uio *uio, int flag) 732 { 733 return (physio (rdstrategy, NULL, dev, B_READ, minphys, uio)); 734 } 735 736 /* 737 * 738 */ 739 int 740 rdwrite(dev_t dev, struct uio *uio, int flag) 741 { 742 return (physio (rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 743 } 744 745 /* 746 * we have to wait 0.7 usec between two accesses to any of the 747 * dkc-registers, on a VS2000 with 1 MIPS, this is roughly one 748 * instruction. Thus the loop-overhead will be enough... 749 */ 750 static void 751 hdc_readregs(struct hdcsoftc *sc) 752 { 753 int i; 754 char *p; 755 756 HDC_WCMD(DKC_CMD_SETREGPTR); 757 WAIT; 758 p = (void*)&sc->sc_sreg; 759 for (i=0; i<10; i++) { 760 *p++ = HDC_RREG; /* dkc_reg auto-increments */ 761 WAIT; 762 } 763 } 764 765 static void 766 hdc_writeregs(struct hdcsoftc *sc) 767 { 768 int i; 769 char *p; 770 771 HDC_WCMD(DKC_CMD_SETREGPTR); 772 p = (void*)&sc->sc_creg; 773 for (i=0; i<10; i++) { 774 HDC_WREG(*p++); /* dkc_reg auto-increments */ 775 WAIT; 776 } 777 } 778 779 /* 780 * hdc_command() issues a command and polls the intreq-register 781 * to find when command has completed 782 */ 783 int 784 hdc_command(struct hdcsoftc *sc, int cmd) 785 { 786 hdc_writeregs(sc); /* write the prepared registers */ 787 HDC_WCMD(cmd); 788 WAIT; 789 return (0); 790 } 791 792 int 793 hdc_rdselect(struct hdcsoftc *sc, int unit) 794 { 795 struct hdc9224_UDCreg * const p = &sc->sc_creg; 796 int error; 797 798 /* 799 * bring "creg" in some known-to-work state and 800 * select the drive with the DRIVE SELECT command. 801 */ 802 memset(p, 0, sizeof(*p)); 803 804 p->udc_rtcnt = UDC_RC_HDD_READ; 805 p->udc_mode = UDC_MD_HDD; 806 p->udc_term = UDC_TC_HDD; 807 808 error = hdc_command(sc, DKC_CMD_DRSEL_HDD | unit); 809 810 return error; 811 } 812 813 void 814 rdmakelabel(struct disklabel *dl, struct rdgeom *g) 815 { 816 int n, p = 0; 817 818 dl->d_bbsize = BBSIZE; 819 dl->d_sbsize = SBLOCKSIZE; 820 dl->d_typename[p++] = MSCP_MID_CHAR(2, g->media_id); 821 dl->d_typename[p++] = MSCP_MID_CHAR(1, g->media_id); 822 if (MSCP_MID_ECH(0, g->media_id)) 823 dl->d_typename[p++] = MSCP_MID_CHAR(0, g->media_id); 824 n = MSCP_MID_NUM(g->media_id); 825 if (n > 99) { 826 dl->d_typename[p++] = '1'; 827 n -= 100; 828 } 829 if (n > 9) { 830 dl->d_typename[p++] = (n / 10) + '0'; 831 n %= 10; 832 } 833 dl->d_typename[p++] = n + '0'; 834 dl->d_typename[p] = 0; 835 dl->d_type = DKTYPE_MSCP; /* XXX - what to use here??? */ 836 dl->d_rpm = 3600; 837 dl->d_secsize = DEV_BSIZE; 838 839 dl->d_secperunit = g->lbn_count; 840 dl->d_nsectors = g->nspt; 841 dl->d_ntracks = g->ntracks; 842 dl->d_secpercyl = dl->d_nsectors * dl->d_ntracks; 843 dl->d_ncylinders = dl->d_secperunit / dl->d_secpercyl; 844 845 dl->d_npartitions = MAXPARTITIONS; 846 dl->d_partitions[0].p_size = dl->d_partitions[2].p_size = 847 dl->d_secperunit; 848 dl->d_partitions[0].p_offset = dl->d_partitions[2].p_offset = 0; 849 dl->d_interleave = dl->d_headswitch = 1; 850 dl->d_magic = dl->d_magic2 = DISKMAGIC; 851 dl->d_checksum = dkcksum(dl); 852 } 853
Indexes created Mon Oct 20 20:10:13 GMT 2025