hdc9224.c revision 1.54
1 /* $NetBSD: hdc9224.c,v 1.54 2014/07/25 08:10:35 dholland 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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed at Ludd, University of 19 * Lule}, Sweden and its contributors. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * with much help from (in alphabetical order): 37 * Jeremy 38 * Roger Ivie 39 * Rick Macklem 40 * Mike Young 41 * 42 * Rewritten by Ragge 25 Jun 2000. New features: 43 * - Uses interrupts instead of polling to signal ready. 44 * - Can cooperate with the SCSI routines WRT. the DMA area. 45 * 46 * TODO: 47 * - Floppy support missing. 48 * - Bad block forwarding missing. 49 * - Statistics collection. 50 */ 51 #undef RDDEBUG 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: hdc9224.c,v 1.54 2014/07/25 08:10:35 dholland Exp $"); 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/buf.h> 59 #include <sys/bufq.h> 60 #include <sys/cpu.h> 61 #include <sys/conf.h> 62 #include <sys/device.h> 63 #include <sys/disklabel.h> 64 #include <sys/disk.h> 65 #include <sys/file.h> 66 #include <sys/ioctl.h> 67 #include <sys/proc.h> 68 #include <sys/stat.h> 69 #include <sys/syslog.h> 70 71 #include <uvm/uvm_extern.h> 72 73 #include <ufs/ufs/dinode.h> /* For BBSIZE */ 74 #include <ufs/ffs/fs.h> 75 76 #include <machine/sid.h> 77 #include <machine/ka410.h> 78 #include <machine/vsbus.h> 79 #include <machine/rpb.h> 80 #include <machine/scb.h> 81 82 #include <dev/mscp/mscp.h> /* For DEC disk encoding */ 83 84 #include <vax/vsa/hdc9224.h> 85 86 #include "ioconf.h" 87 #include "locators.h" 88 89 90 /* 91 * on-disk geometry block 92 */ 93 #define _aP __attribute__ ((packed)) /* force byte-alignment */ 94 struct rdgeom { 95 char mbz[10]; /* 10 bytes of zero */ 96 long xbn_count _aP; /* number of XBNs */ 97 long dbn_count _aP; /* number of DBNs */ 98 long lbn_count _aP; /* number of LBNs (Logical-Block-Numbers) */ 99 long rbn_count _aP; /* number of RBNs (Replacement-Block-Numbers) */ 100 short nspt; /* number of sectors per track */ 101 short ntracks; /* number of tracks */ 102 short ncylinders; /* number of cylinders */ 103 short precomp; /* first cylinder for write precompensation */ 104 short reduced; /* first cylinder for reduced write current */ 105 short seek_rate; /* seek rate or zero for buffered seeks */ 106 short crc_eec; /* 0 if CRC, 1 if ECC is being used */ 107 short rct; /* "replacement control table" (RCT) */ 108 short rct_ncopies; /* number of copies of the RCT */ 109 long media_id _aP; /* media identifier */ 110 short interleave; /* sector-to-sector interleave */ 111 short headskew; /* head-to-head skew */ 112 short cylskew; /* cylinder-to-cylinder skew */ 113 short gap0_size; /* size of GAP 0 in the MFM format */ 114 short gap1_size; /* size of GAP 1 in the MFM format */ 115 short gap2_size; /* size of GAP 2 in the MFM format */ 116 short gap3_size; /* size of GAP 3 in the MFM format */ 117 short sync_value; /* sync value used when formatting */ 118 char reserved[32]; /* reserved for use by the RQDX formatter */ 119 short serial_number; /* serial number */ 120 #if 0 /* we don't need these 412 useless bytes ... */ 121 char fill[412-2]; /* Filler bytes to the end of the block */ 122 short checksum; /* checksum over the XBN */ 123 #endif 124 }; 125 126 /* 127 * Software status 128 */ 129 struct rdsoftc { 130 device_t sc_dev; /* must be here! (pseudo-OOP:) */ 131 struct hdcsoftc *sc_hdc; 132 struct disk sc_disk; /* disklabel etc. */ 133 struct rdgeom sc_xbn; /* on-disk geometry information */ 134 int sc_drive; /* physical unit number */ 135 }; 136 137 struct hdcsoftc { 138 device_t sc_dev; /* must be here (pseudo-OOP:) */ 139 struct evcnt sc_intrcnt; 140 struct vsbus_dma sc_vd; 141 vaddr_t sc_regs; /* register addresses */ 142 struct bufq_state *sc_q; 143 struct buf *sc_active; 144 struct hdc9224_UDCreg sc_creg; /* (command) registers to be written */ 145 struct hdc9224_UDCreg sc_sreg; /* (status) registers being read */ 146 void * sc_dmabase; /* */ 147 int sc_dmasize; 148 void *sc_bufaddr; /* Current in-core address */ 149 int sc_diskblk; /* Current block on disk */ 150 int sc_bytecnt; /* How much left to transfer */ 151 int sc_xfer; /* Current transfer size */ 152 int sc_retries; 153 volatile u_char sc_status; /* last status from interrupt */ 154 char sc_intbit; 155 }; 156 157 struct hdc_attach_args { 158 int ha_drive; 159 }; 160 161 /* 162 * prototypes for (almost) all the internal routines 163 */ 164 static int hdcmatch(device_t, cfdata_t, void *); 165 static void hdcattach(device_t, device_t, void *); 166 static int hdcprint(void *, const char *); 167 static int rdmatch(device_t, cfdata_t, void *); 168 static void rdattach(device_t, device_t, void *); 169 static void hdcintr(void *); 170 static int hdc_command(struct hdcsoftc *, int); 171 static void rd_readgeom(struct hdcsoftc *, struct rdsoftc *); 172 #ifdef RDDEBUG 173 static void hdc_printgeom( struct rdgeom *); 174 #endif 175 static void hdc_writeregs(struct hdcsoftc *); 176 static void hdcstart(struct hdcsoftc *, struct buf *); 177 static int hdc_rdselect(struct hdcsoftc *, int); 178 static void rdmakelabel(struct disklabel *, struct rdgeom *); 179 static void hdc_writeregs(struct hdcsoftc *); 180 static void hdc_readregs(struct hdcsoftc *); 181 static void hdc_qstart(void *); 182 183 CFATTACH_DECL_NEW(hdc, sizeof(struct hdcsoftc), 184 hdcmatch, hdcattach, NULL, NULL); 185 186 CFATTACH_DECL_NEW(rd, sizeof(struct rdsoftc), 187 rdmatch, rdattach, NULL, NULL); 188 189 static dev_type_open(rdopen); 190 static dev_type_close(rdclose); 191 static dev_type_read(rdread); 192 static dev_type_write(rdwrite); 193 static dev_type_ioctl(rdioctl); 194 static dev_type_strategy(rdstrategy); 195 static dev_type_size(rdpsize); 196 197 const struct bdevsw rd_bdevsw = { 198 .d_open = rdopen, 199 .d_close = rdclose, 200 .d_strategy = rdstrategy, 201 .d_ioctl = rdioctl, 202 .d_dump = nulldump, 203 .d_psize = rdpsize, 204 .d_discard = nodiscard, 205 .d_flag = D_DISK 206 }; 207 208 const struct cdevsw rd_cdevsw = { 209 .d_open = rdopen, 210 .d_close = rdclose, 211 .d_read = rdread, 212 .d_write = rdwrite, 213 .d_ioctl = rdioctl, 214 .d_stop = nostop, 215 .d_tty = notty, 216 .d_poll = nopoll, 217 .d_mmap = nommap, 218 .d_kqfilter = nokqfilter, 219 .d_discard = nodiscard, 220 .d_flag = D_DISK 221 }; 222 223 /* At least 0.7 uS between register accesses */ 224 static int rd_dmasize, inq = 0; 225 static volatile int u; 226 #define WAIT __asm("movl %0,%0;movl %0,%0;movl %0,%0; movl %0,%0" :: "m"(u)) 227 228 #define HDC_WREG(x) *(volatile char *)(sc->sc_regs) = (x) 229 #define HDC_RREG *(volatile char *)(sc->sc_regs) 230 #define HDC_WCMD(x) *(volatile char *)(sc->sc_regs + 4) = (x) 231 #define HDC_RSTAT *(volatile char *)(sc->sc_regs + 4) 232 233 /* 234 * new-config's hdcmatch() is similiar to old-config's hdcprobe(), 235 * thus we probe for the existence of the controller and reset it. 236 * NB: we can't initialize the controller yet, since space for hdcsoftc 237 * is not yet allocated. Thus we do this in hdcattach()... 238 */ 239 int 240 hdcmatch(device_t parent, cfdata_t cf, void *aux) 241 { 242 struct vsbus_attach_args * const va = aux; 243 volatile char * const hdc_csr = (volatile char *)va->va_addr; 244 int i; 245 246 u = 8; /* !!! - GCC */ 247 248 if (vax_boardtype == VAX_BTYP_49 || vax_boardtype == VAX_BTYP_46 249 || vax_boardtype == VAX_BTYP_48 || vax_boardtype == VAX_BTYP_53) 250 return 0; 251 252 hdc_csr[4] = DKC_CMD_RESET; /* reset chip */ 253 for (i = 0; i < 1000; i++) { 254 DELAY(1000); 255 if (hdc_csr[4] & DKC_ST_DONE) 256 break; 257 } 258 if (i == 100) 259 return 0; /* No response to reset */ 260 261 hdc_csr[4] = DKC_CMD_SETREGPTR|UDC_TERM; 262 WAIT; 263 hdc_csr[0] = UDC_TC_CRCPRE|UDC_TC_INTDONE; 264 WAIT; 265 hdc_csr[4] = DKC_CMD_DRDESELECT; /* Should be harmless */ 266 DELAY(1000); 267 return (1); 268 } 269 270 int 271 hdcprint(void *aux, const char *name) 272 { 273 struct hdc_attach_args * const ha = aux; 274 275 if (name) 276 aprint_normal ("RD?? at %s drive %d", name, ha->ha_drive); 277 return UNCONF; 278 } 279 280 /* 281 * hdc_attach() probes for all possible devices 282 */ 283 void 284 hdcattach(device_t parent, device_t self, void *aux) 285 { 286 struct vsbus_attach_args * const va = aux; 287 struct hdcsoftc * const sc = device_private(self); 288 struct hdc_attach_args ha; 289 int status, i; 290 291 aprint_normal("\n"); 292 293 sc->sc_dev = self; 294 295 /* 296 * Get interrupt vector, enable instrumentation. 297 */ 298 scb_vecalloc(va->va_cvec, hdcintr, sc, SCB_ISTACK, &sc->sc_intrcnt); 299 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 300 device_xname(self), "intr"); 301 302 sc->sc_regs = vax_map_physmem(va->va_paddr, 1); 303 sc->sc_dmabase = (void *)va->va_dmaaddr; 304 sc->sc_dmasize = va->va_dmasize; 305 sc->sc_intbit = va->va_maskno; 306 rd_dmasize = min(MAXPHYS, sc->sc_dmasize); /* Used in rd_minphys */ 307 308 sc->sc_vd.vd_go = hdc_qstart; 309 sc->sc_vd.vd_arg = sc; 310 /* 311 * Reset controller. 312 */ 313 HDC_WCMD(DKC_CMD_RESET); 314 DELAY(1000); 315 status = HDC_RSTAT; 316 if (status != (DKC_ST_DONE|DKC_TC_SUCCESS)) { 317 aprint_error_dev(self, "RESET failed, status 0x%x\n", status); 318 return; 319 } 320 bufq_alloc(&sc->sc_q, "disksort", BUFQ_SORT_CYLINDER); 321 322 /* 323 * now probe for all possible hard drives 324 */ 325 for (i = 0; i < 4; i++) { 326 if (i == 2) /* Floppy, needs special handling */ 327 continue; 328 HDC_WCMD(DKC_CMD_DRSELECT | i); 329 DELAY(1000); 330 status = HDC_RSTAT; 331 ha.ha_drive = i; 332 if ((status & DKC_ST_TERMCOD) == DKC_TC_SUCCESS) 333 config_found(self, (void *)&ha, hdcprint); 334 } 335 } 336 337 /* 338 * rdmatch() probes for the existence of a RD-type disk/floppy 339 */ 340 int 341 rdmatch(device_t parent, cfdata_t cf, void *aux) 342 { 343 struct hdc_attach_args * const ha = aux; 344 345 if (cf->cf_loc[HDCCF_DRIVE] != HDCCF_DRIVE_DEFAULT && 346 cf->cf_loc[HDCCF_DRIVE] != ha->ha_drive) 347 return 0; 348 349 if (ha->ha_drive == 2) /* Always floppy, not supported */ 350 return 0; 351 352 return 1; 353 } 354 355 void 356 rdattach(device_t parent, device_t self, void *aux) 357 { 358 struct hdcsoftc * const sc = device_private(parent); 359 struct rdsoftc * const rd = device_private(self); 360 struct hdc_attach_args * const ha = aux; 361 struct disklabel *dl; 362 const char *msg; 363 364 rd->sc_dev = self; 365 rd->sc_drive = ha->ha_drive; 366 rd->sc_hdc = sc; 367 /* 368 * Initialize and attach the disk structure. 369 */ 370 disk_init(&rd->sc_disk, device_xname(rd->sc_dev), NULL); 371 disk_attach(&rd->sc_disk); 372 373 /* 374 * if it's not a floppy then evaluate the on-disk geometry. 375 * if necessary correct the label... 376 */ 377 rd_readgeom(sc, rd); 378 disk_printtype(rd->sc_drive, rd->sc_xbn.media_id); 379 dl = rd->sc_disk.dk_label; 380 rdmakelabel(dl, &rd->sc_xbn); 381 msg = readdisklabel(MAKEDISKDEV(cdevsw_lookup_major(&rd_cdevsw), 382 device_unit(rd->sc_dev), RAW_PART), 383 rdstrategy, dl, NULL); 384 if (msg) 385 aprint_normal_dev(self, "%s: size %u sectors", 386 msg, dl->d_secperunit); 387 else 388 aprint_normal_dev(self, "size %u sectors\n", dl->d_secperunit); 389 #ifdef RDDEBUG 390 hdc_printgeom(&rd->sc_xbn); 391 #endif 392 } 393 394 void 395 hdcintr(void *arg) 396 { 397 struct hdcsoftc * const sc = arg; 398 struct buf *bp; 399 400 sc->sc_status = HDC_RSTAT; 401 if (sc->sc_active == 0) 402 return; /* Complain? */ 403 404 if ((sc->sc_status & (DKC_ST_INTPEND|DKC_ST_DONE)) != 405 (DKC_ST_INTPEND|DKC_ST_DONE)) 406 return; /* Why spurious ints sometimes??? */ 407 408 bp = sc->sc_active; 409 sc->sc_active = 0; 410 if ((sc->sc_status & DKC_ST_TERMCOD) != DKC_TC_SUCCESS) { 411 int i; 412 u_char *g = (u_char *)&sc->sc_sreg; 413 414 if (sc->sc_retries++ < 3) { /* Allow 3 retries */ 415 hdcstart(sc, bp); 416 return; 417 } 418 aprint_error_dev(sc->sc_dev, "failed, status 0x%x\n", 419 sc->sc_status); 420 hdc_readregs(sc); 421 for (i = 0; i < 10; i++) 422 aprint_error("%i: %x\n", i, g[i]); 423 bp->b_error = ENXIO; 424 bp->b_resid = bp->b_bcount; 425 biodone(bp); 426 vsbus_dma_intr(); 427 return; 428 } 429 430 if (bp->b_flags & B_READ) { 431 vsbus_copytoproc(bp->b_proc, sc->sc_dmabase, sc->sc_bufaddr, 432 sc->sc_xfer); 433 } 434 sc->sc_diskblk += (sc->sc_xfer/DEV_BSIZE); 435 sc->sc_bytecnt -= sc->sc_xfer; 436 sc->sc_bufaddr = (char *)sc->sc_bufaddr + sc->sc_xfer; 437 438 if (sc->sc_bytecnt == 0) { /* Finished transfer */ 439 biodone(bp); 440 vsbus_dma_intr(); 441 } else 442 hdcstart(sc, bp); 443 } 444 445 /* 446 * 447 */ 448 void 449 rdstrategy(struct buf *bp) 450 { 451 struct rdsoftc *rd; 452 struct hdcsoftc *sc; 453 struct disklabel *lp; 454 int s; 455 456 if ((rd = device_lookup_private(&rd_cd, DISKUNIT(bp->b_dev))) == NULL) { 457 bp->b_error = ENXIO; 458 goto done; 459 } 460 sc = rd->sc_hdc; 461 462 lp = rd->sc_disk.dk_label; 463 if ((bounds_check_with_label(&rd->sc_disk, bp, 1)) <= 0) 464 goto done; 465 466 if (bp->b_bcount == 0) 467 goto done; 468 469 bp->b_rawblkno = 470 bp->b_blkno + lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 471 bp->b_cylinder = bp->b_rawblkno / lp->d_secpercyl; 472 473 s = splbio(); 474 bufq_put(sc->sc_q, bp); 475 if (inq == 0) { 476 inq = 1; 477 vsbus_dma_start(&sc->sc_vd); 478 } 479 splx(s); 480 return; 481 482 done: biodone(bp); 483 } 484 485 void 486 hdc_qstart(void *arg) 487 { 488 struct hdcsoftc * const sc = arg; 489 490 inq = 0; 491 492 hdcstart(sc, 0); 493 if (bufq_peek(sc->sc_q)) { 494 vsbus_dma_start(&sc->sc_vd); /* More to go */ 495 inq = 1; 496 } 497 } 498 499 void 500 hdcstart(struct hdcsoftc *sc, struct buf *ob) 501 { 502 struct hdc9224_UDCreg * const p = &sc->sc_creg; 503 struct disklabel *lp; 504 struct rdsoftc *rd; 505 struct buf *bp; 506 int cn, sn, tn, bn, blks; 507 508 if (sc->sc_active) 509 return; /* Already doing something */ 510 511 if (ob == 0) { 512 bp = bufq_get(sc->sc_q); 513 if (bp == NULL) 514 return; /* Nothing to do */ 515 sc->sc_bufaddr = bp->b_data; 516 sc->sc_diskblk = bp->b_rawblkno; 517 sc->sc_bytecnt = bp->b_bcount; 518 sc->sc_retries = 0; 519 bp->b_resid = 0; 520 } else 521 bp = ob; 522 523 rd = device_lookup_private(&rd_cd, DISKUNIT(bp->b_dev)); 524 hdc_rdselect(sc, rd->sc_drive); 525 sc->sc_active = bp; 526 527 bn = sc->sc_diskblk; 528 lp = rd->sc_disk.dk_label; 529 if (bn) { 530 cn = bn / lp->d_secpercyl; 531 sn = bn % lp->d_secpercyl; 532 tn = sn / lp->d_nsectors; 533 sn = sn % lp->d_nsectors; 534 } else 535 cn = sn = tn = 0; 536 537 cn++; /* first cylinder is reserved */ 538 539 memset(p, 0, sizeof(struct hdc9224_UDCreg)); 540 541 /* 542 * Tricky thing: the controller do itself only increase the sector 543 * number, not the track or cylinder number. Therefore the driver 544 * is not allowed to have transfers that crosses track boundaries. 545 */ 546 blks = sc->sc_bytecnt/DEV_BSIZE; 547 if ((sn + blks) > lp->d_nsectors) 548 blks = lp->d_nsectors - sn; 549 550 p->udc_dsect = sn; 551 p->udc_dcyl = cn & 0xff; 552 p->udc_dhead = ((cn >> 4) & 0x70) | tn; 553 p->udc_scnt = blks; 554 555 p->udc_rtcnt = UDC_RC_RTRYCNT; 556 p->udc_mode = UDC_MD_HDD; 557 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWRFLT; 558 hdc_writeregs(sc); 559 560 /* Count up vars */ 561 sc->sc_xfer = blks * DEV_BSIZE; 562 563 (void)HDC_RSTAT; /* Avoid pending interrupts */ 564 WAIT; 565 vsbus_clrintr(sc->sc_intbit); /* Clear pending int's */ 566 567 if (bp->b_flags & B_READ) { 568 HDC_WCMD(DKC_CMD_READ_HDD); 569 } else { 570 vsbus_copyfromproc(bp->b_proc, sc->sc_bufaddr, sc->sc_dmabase, 571 sc->sc_xfer); 572 HDC_WCMD(DKC_CMD_WRITE_HDD); 573 } 574 } 575 576 void 577 rd_readgeom(struct hdcsoftc *sc, struct rdsoftc *rd) 578 { 579 struct hdc9224_UDCreg * const p = &sc->sc_creg; 580 581 hdc_rdselect(sc, rd->sc_drive); /* select drive right now */ 582 583 memset(p, 0, sizeof(*p)); 584 585 p->udc_scnt = 1; 586 p->udc_rtcnt = UDC_RC_RTRYCNT; 587 p->udc_mode = UDC_MD_HDD; 588 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWPROT; 589 hdc_writeregs(sc); 590 sc->sc_status = 0; 591 HDC_WCMD(DKC_CMD_READ_HDD|2); 592 while ((sc->sc_status & DKC_ST_INTPEND) == 0) 593 ; 594 memcpy(&rd->sc_xbn, sc->sc_dmabase, sizeof(struct rdgeom)); 595 } 596 597 #ifdef RDDEBUG 598 /* 599 * display the contents of the on-disk geometry structure 600 */ 601 void 602 hdc_printgeom(struct rdgeom *p) 603 { 604 printf ("**DiskData** XBNs: %ld, DBNs: %ld, LBNs: %ld, RBNs: %ld\n", 605 p->xbn_count, p->dbn_count, p->lbn_count, p->rbn_count); 606 printf ("sec/track: %d, tracks: %d, cyl: %d, precomp/reduced: %d/%d\n", 607 p->nspt, p->ntracks, p->ncylinders, p->precomp, p->reduced); 608 printf ("seek-rate: %d, crc/eec: %s, RCT: %d, RCT-copies: %d\n", 609 p->seek_rate, p->crc_eec?"EEC":"CRC", p->rct, p->rct_ncopies); 610 printf ("media-ID: %lx, interleave: %d, headskew: %d, cylskew: %d\n", 611 p->media_id, p->interleave, p->headskew, p->cylskew); 612 printf ("gap0: %d, gap1: %d, gap2: %d, gap3: %d, sync-value: %d\n", 613 p->gap0_size, p->gap1_size, p->gap2_size, p->gap3_size, 614 p->sync_value); 615 } 616 #endif 617 618 /* 619 * Return the size of a partition, if known, or -1 if not. 620 */ 621 int 622 rdpsize(dev_t dev) 623 { 624 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 625 const int part = DISKPART(dev); 626 627 if (rd == NULL || part >= rd->sc_disk.dk_label->d_npartitions) 628 return -1; 629 630 return rd->sc_disk.dk_label->d_partitions[part].p_size * 631 (rd->sc_disk.dk_label->d_secsize / DEV_BSIZE); 632 } 633 634 /* 635 * 636 */ 637 int 638 rdopen(dev_t dev, int flag, int fmt, struct lwp *l) 639 { 640 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 641 const int part = DISKPART(dev); 642 643 if (rd == NULL || part >= rd->sc_disk.dk_label->d_npartitions) 644 return ENXIO; 645 646 switch (fmt) { 647 case S_IFCHR: 648 rd->sc_disk.dk_copenmask |= (1 << part); 649 break; 650 case S_IFBLK: 651 rd->sc_disk.dk_bopenmask |= (1 << part); 652 break; 653 } 654 rd->sc_disk.dk_openmask = 655 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 656 657 return 0; 658 } 659 660 /* 661 * 662 */ 663 int 664 rdclose(dev_t dev, int flag, int fmt, struct lwp *l) 665 { 666 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 667 const int part = DISKPART(dev); 668 669 switch (fmt) { 670 case S_IFCHR: 671 rd->sc_disk.dk_copenmask &= ~(1 << part); 672 break; 673 case S_IFBLK: 674 rd->sc_disk.dk_bopenmask &= ~(1 << part); 675 break; 676 } 677 rd->sc_disk.dk_openmask = 678 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 679 680 return (0); 681 } 682 683 /* 684 * 685 */ 686 int 687 rdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 688 { 689 struct rdsoftc * const rd = device_lookup_private(&rd_cd, DISKUNIT(dev)); 690 struct disklabel * const lp = rd->sc_disk.dk_label; 691 int error = 0; 692 693 switch (cmd) { 694 case DIOCGDINFO: 695 *(struct disklabel *)addr = *lp; 696 break; 697 698 case DIOCGPART: 699 ((struct partinfo *)addr)->disklab = lp; 700 ((struct partinfo *)addr)->part = 701 &lp->d_partitions[DISKPART(dev)]; 702 break; 703 704 case DIOCWDINFO: 705 case DIOCSDINFO: 706 if ((flag & FWRITE) == 0) 707 return EBADF; 708 error = (cmd == DIOCSDINFO ? 709 setdisklabel(lp, (struct disklabel *)addr, 0, 0) : 710 writedisklabel(dev, rdstrategy, lp, 0)); 711 break; 712 713 case DIOCGDEFLABEL: 714 memset(lp, 0, sizeof(*lp)); 715 rdmakelabel(lp, &rd->sc_xbn); 716 break; 717 718 case DIOCWLABEL: 719 if ((flag & FWRITE) == 0) 720 error = EBADF; 721 break; 722 723 default: 724 error = ENOTTY; 725 } 726 return error; 727 } 728 729 /* 730 * 731 */ 732 int 733 rdread(dev_t dev, struct uio *uio, int flag) 734 { 735 return (physio (rdstrategy, NULL, dev, B_READ, minphys, uio)); 736 } 737 738 /* 739 * 740 */ 741 int 742 rdwrite(dev_t dev, struct uio *uio, int flag) 743 { 744 return (physio (rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 745 } 746 747 /* 748 * we have to wait 0.7 usec between two accesses to any of the 749 * dkc-registers, on a VS2000 with 1 MIPS, this is roughly one 750 * instruction. Thus the loop-overhead will be enough... 751 */ 752 static void 753 hdc_readregs(struct hdcsoftc *sc) 754 { 755 int i; 756 char *p; 757 758 HDC_WCMD(DKC_CMD_SETREGPTR); 759 WAIT; 760 p = (void*)&sc->sc_sreg; 761 for (i=0; i<10; i++) { 762 *p++ = HDC_RREG; /* dkc_reg auto-increments */ 763 WAIT; 764 } 765 } 766 767 static void 768 hdc_writeregs(struct hdcsoftc *sc) 769 { 770 int i; 771 char *p; 772 773 HDC_WCMD(DKC_CMD_SETREGPTR); 774 p = (void*)&sc->sc_creg; 775 for (i=0; i<10; i++) { 776 HDC_WREG(*p++); /* dkc_reg auto-increments */ 777 WAIT; 778 } 779 } 780 781 /* 782 * hdc_command() issues a command and polls the intreq-register 783 * to find when command has completed 784 */ 785 int 786 hdc_command(struct hdcsoftc *sc, int cmd) 787 { 788 hdc_writeregs(sc); /* write the prepared registers */ 789 HDC_WCMD(cmd); 790 WAIT; 791 return (0); 792 } 793 794 int 795 hdc_rdselect(struct hdcsoftc *sc, int unit) 796 { 797 struct hdc9224_UDCreg * const p = &sc->sc_creg; 798 int error; 799 800 /* 801 * bring "creg" in some known-to-work state and 802 * select the drive with the DRIVE SELECT command. 803 */ 804 memset(p, 0, sizeof(*p)); 805 806 p->udc_rtcnt = UDC_RC_HDD_READ; 807 p->udc_mode = UDC_MD_HDD; 808 p->udc_term = UDC_TC_HDD; 809 810 error = hdc_command(sc, DKC_CMD_DRSEL_HDD | unit); 811 812 return error; 813 } 814 815 void 816 rdmakelabel(struct disklabel *dl, struct rdgeom *g) 817 { 818 int n, p = 0; 819 820 dl->d_bbsize = BBSIZE; 821 dl->d_sbsize = SBLOCKSIZE; 822 dl->d_typename[p++] = MSCP_MID_CHAR(2, g->media_id); 823 dl->d_typename[p++] = MSCP_MID_CHAR(1, g->media_id); 824 if (MSCP_MID_ECH(0, g->media_id)) 825 dl->d_typename[p++] = MSCP_MID_CHAR(0, g->media_id); 826 n = MSCP_MID_NUM(g->media_id); 827 if (n > 99) { 828 dl->d_typename[p++] = '1'; 829 n -= 100; 830 } 831 if (n > 9) { 832 dl->d_typename[p++] = (n / 10) + '0'; 833 n %= 10; 834 } 835 dl->d_typename[p++] = n + '0'; 836 dl->d_typename[p] = 0; 837 dl->d_type = DTYPE_MSCP; /* XXX - what to use here??? */ 838 dl->d_rpm = 3600; 839 dl->d_secsize = DEV_BSIZE; 840 841 dl->d_secperunit = g->lbn_count; 842 dl->d_nsectors = g->nspt; 843 dl->d_ntracks = g->ntracks; 844 dl->d_secpercyl = dl->d_nsectors * dl->d_ntracks; 845 dl->d_ncylinders = dl->d_secperunit / dl->d_secpercyl; 846 847 dl->d_npartitions = MAXPARTITIONS; 848 dl->d_partitions[0].p_size = dl->d_partitions[2].p_size = 849 dl->d_secperunit; 850 dl->d_partitions[0].p_offset = dl->d_partitions[2].p_offset = 0; 851 dl->d_interleave = dl->d_headswitch = 1; 852 dl->d_magic = dl->d_magic2 = DISKMAGIC; 853 dl->d_checksum = dkcksum(dl); 854 } 855
Indexes created Wed Oct 01 18:09:54 GMT 2025