hdc9224.c revision 1.39.14.1
1 /* $NetBSD: hdc9224.c,v 1.39.14.1 2007/08/15 13:47:55 skrll 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 1.39.14.1 2007/08/15 13:47:55 skrll Exp $"); 55 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/conf.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/proc.h> 66 #include <sys/user.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/syslog.h> 71 #include <sys/reboot.h> 72 73 #include <uvm/uvm_extern.h> 74 75 #include <ufs/ufs/dinode.h> /* For BBSIZE */ 76 #include <ufs/ffs/fs.h> 77 78 #include <machine/pte.h> 79 #include <machine/sid.h> 80 #include <machine/cpu.h> 81 #include <machine/uvax.h> 82 #include <machine/ka410.h> 83 #include <machine/vsbus.h> 84 #include <machine/rpb.h> 85 #include <machine/scb.h> 86 87 #include <dev/mscp/mscp.h> /* For DEC disk encoding */ 88 89 #include <vax/vsa/hdc9224.h> 90 91 #include "ioconf.h" 92 #include "locators.h" 93 94 95 /* 96 * on-disk geometry block 97 */ 98 #define _aP __attribute__ ((packed)) /* force byte-alignment */ 99 struct rdgeom { 100 char mbz[10]; /* 10 bytes of zero */ 101 long xbn_count _aP; /* number of XBNs */ 102 long dbn_count _aP; /* number of DBNs */ 103 long lbn_count _aP; /* number of LBNs (Logical-Block-Numbers) */ 104 long rbn_count _aP; /* number of RBNs (Replacement-Block-Numbers) */ 105 short nspt; /* number of sectors per track */ 106 short ntracks; /* number of tracks */ 107 short ncylinders; /* number of cylinders */ 108 short precomp; /* first cylinder for write precompensation */ 109 short reduced; /* first cylinder for reduced write current */ 110 short seek_rate; /* seek rate or zero for buffered seeks */ 111 short crc_eec; /* 0 if CRC, 1 if ECC is being used */ 112 short rct; /* "replacement control table" (RCT) */ 113 short rct_ncopies; /* number of copies of the RCT */ 114 long media_id _aP; /* media identifier */ 115 short interleave; /* sector-to-sector interleave */ 116 short headskew; /* head-to-head skew */ 117 short cylskew; /* cylinder-to-cylinder skew */ 118 short gap0_size; /* size of GAP 0 in the MFM format */ 119 short gap1_size; /* size of GAP 1 in the MFM format */ 120 short gap2_size; /* size of GAP 2 in the MFM format */ 121 short gap3_size; /* size of GAP 3 in the MFM format */ 122 short sync_value; /* sync value used when formatting */ 123 char reserved[32]; /* reserved for use by the RQDX formatter */ 124 short serial_number; /* serial number */ 125 #if 0 /* we don't need these 412 useless bytes ... */ 126 char fill[412-2]; /* Filler bytes to the end of the block */ 127 short checksum; /* checksum over the XBN */ 128 #endif 129 }; 130 131 /* 132 * Software status 133 */ 134 struct rdsoftc { 135 struct device sc_dev; /* must be here! (pseudo-OOP:) */ 136 struct disk sc_disk; /* disklabel etc. */ 137 struct rdgeom sc_xbn; /* on-disk geometry information */ 138 int sc_drive; /* physical unit number */ 139 }; 140 141 struct hdcsoftc { 142 struct device sc_dev; /* must be here (pseudo-OOP:) */ 143 struct evcnt sc_intrcnt; 144 struct vsbus_dma sc_vd; 145 vaddr_t sc_regs; /* register addresses */ 146 struct bufq_state *sc_q; 147 struct buf *sc_active; 148 struct hdc9224_UDCreg sc_creg; /* (command) registers to be written */ 149 struct hdc9224_UDCreg sc_sreg; /* (status) registers being read */ 150 void * sc_dmabase; /* */ 151 int sc_dmasize; 152 void *sc_bufaddr; /* Current in-core address */ 153 int sc_diskblk; /* Current block on disk */ 154 int sc_bytecnt; /* How much left to transfer */ 155 int sc_xfer; /* Current transfer size */ 156 int sc_retries; 157 volatile u_char sc_status; /* last status from interrupt */ 158 char sc_intbit; 159 }; 160 161 struct hdc_attach_args { 162 int ha_drive; 163 }; 164 165 /* 166 * prototypes for (almost) all the internal routines 167 */ 168 static int hdcmatch(struct device *, struct cfdata *, void *); 169 static void hdcattach(struct device *, struct device *, void *); 170 static int hdcprint(void *, const char *); 171 static int rdmatch(struct device *, struct cfdata *, void *); 172 static void rdattach(struct device *, struct device *, void *); 173 static void hdcintr(void *); 174 static int hdc_command(struct hdcsoftc *, int); 175 static void rd_readgeom(struct hdcsoftc *, struct rdsoftc *); 176 #ifdef RDDEBUG 177 static void hdc_printgeom( struct rdgeom *); 178 #endif 179 static void hdc_writeregs(struct hdcsoftc *); 180 static void hdcstart(struct hdcsoftc *, struct buf *); 181 static int hdc_rdselect(struct hdcsoftc *, int); 182 static void rdmakelabel(struct disklabel *, struct rdgeom *); 183 static void hdc_writeregs(struct hdcsoftc *); 184 static void hdc_readregs(struct hdcsoftc *); 185 static void hdc_qstart(void *); 186 187 CFATTACH_DECL(hdc, sizeof(struct hdcsoftc), 188 hdcmatch, hdcattach, NULL, NULL); 189 190 CFATTACH_DECL(rd, sizeof(struct rdsoftc), 191 rdmatch, rdattach, NULL, NULL); 192 193 dev_type_open(rdopen); 194 dev_type_close(rdclose); 195 dev_type_read(rdread); 196 dev_type_write(rdwrite); 197 dev_type_ioctl(rdioctl); 198 dev_type_strategy(rdstrategy); 199 dev_type_size(rdsize); 200 201 const struct bdevsw rd_bdevsw = { 202 rdopen, rdclose, rdstrategy, rdioctl, nulldump, rdsize, D_DISK 203 }; 204 205 const struct cdevsw rd_cdevsw = { 206 rdopen, rdclose, rdread, rdwrite, rdioctl, 207 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 208 }; 209 210 /* At least 0.7 uS between register accesses */ 211 static int rd_dmasize, inq = 0; 212 static int u; 213 #define WAIT __asm("movl %0,%0;movl %0,%0;movl %0,%0; movl %0,%0" :: "m"(u)) 214 215 #define HDC_WREG(x) *(volatile char *)(sc->sc_regs) = (x) 216 #define HDC_RREG *(volatile char *)(sc->sc_regs) 217 #define HDC_WCMD(x) *(volatile char *)(sc->sc_regs + 4) = (x) 218 #define HDC_RSTAT *(volatile char *)(sc->sc_regs + 4) 219 220 /* 221 * new-config's hdcmatch() is similiar to old-config's hdcprobe(), 222 * thus we probe for the existence of the controller and reset it. 223 * NB: we can't initialize the controller yet, since space for hdcsoftc 224 * is not yet allocated. Thus we do this in hdcattach()... 225 */ 226 int 227 hdcmatch(struct device *parent, struct cfdata *cf, void *aux) 228 { 229 struct vsbus_attach_args *va = aux; 230 volatile char *hdc_csr = (char *)va->va_addr; 231 int i; 232 233 u = 8; /* !!! - GCC */ 234 235 if (vax_boardtype == VAX_BTYP_49 || vax_boardtype == VAX_BTYP_46 236 || vax_boardtype == VAX_BTYP_48 || vax_boardtype == VAX_BTYP_53) 237 return 0; 238 239 hdc_csr[4] = DKC_CMD_RESET; /* reset chip */ 240 for (i = 0; i < 1000; i++) { 241 DELAY(1000); 242 if (hdc_csr[4] & DKC_ST_DONE) 243 break; 244 } 245 if (i == 100) 246 return 0; /* No response to reset */ 247 248 hdc_csr[4] = DKC_CMD_SETREGPTR|UDC_TERM; 249 WAIT; 250 hdc_csr[0] = UDC_TC_CRCPRE|UDC_TC_INTDONE; 251 WAIT; 252 hdc_csr[4] = DKC_CMD_DRDESELECT; /* Should be harmless */ 253 DELAY(1000); 254 return (1); 255 } 256 257 int 258 hdcprint(void *aux, const char *name) 259 { 260 struct hdc_attach_args *ha = aux; 261 262 if (name) 263 aprint_normal ("RD?? at %s drive %d", name, ha->ha_drive); 264 return UNCONF; 265 } 266 267 /* 268 * hdc_attach() probes for all possible devices 269 */ 270 void 271 hdcattach(struct device *parent, struct device *self, void *aux) 272 { 273 struct vsbus_attach_args *va = aux; 274 struct hdcsoftc *sc = (void *)self; 275 struct hdc_attach_args ha; 276 int status, i; 277 278 printf ("\n"); 279 /* 280 * Get interrupt vector, enable instrumentation. 281 */ 282 scb_vecalloc(va->va_cvec, hdcintr, sc, SCB_ISTACK, &sc->sc_intrcnt); 283 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 284 self->dv_xname, "intr"); 285 286 sc->sc_regs = vax_map_physmem(va->va_paddr, 1); 287 sc->sc_dmabase = (void *)va->va_dmaaddr; 288 sc->sc_dmasize = va->va_dmasize; 289 sc->sc_intbit = va->va_maskno; 290 rd_dmasize = min(MAXPHYS, sc->sc_dmasize); /* Used in rd_minphys */ 291 292 sc->sc_vd.vd_go = hdc_qstart; 293 sc->sc_vd.vd_arg = sc; 294 /* 295 * Reset controller. 296 */ 297 HDC_WCMD(DKC_CMD_RESET); 298 DELAY(1000); 299 status = HDC_RSTAT; 300 if (status != (DKC_ST_DONE|DKC_TC_SUCCESS)) { 301 printf("%s: RESET failed, status 0x%x\n", 302 sc->sc_dev.dv_xname, status); 303 return; 304 } 305 bufq_alloc(&sc->sc_q, "disksort", BUFQ_SORT_CYLINDER); 306 307 /* 308 * now probe for all possible hard drives 309 */ 310 for (i = 0; i < 4; i++) { 311 if (i == 2) /* Floppy, needs special handling */ 312 continue; 313 HDC_WCMD(DKC_CMD_DRSELECT | i); 314 DELAY(1000); 315 status = HDC_RSTAT; 316 ha.ha_drive = i; 317 if ((status & DKC_ST_TERMCOD) == DKC_TC_SUCCESS) 318 config_found(self, (void *)&ha, hdcprint); 319 } 320 } 321 322 /* 323 * rdmatch() probes for the existence of a RD-type disk/floppy 324 */ 325 int 326 rdmatch(parent, cf, aux) 327 struct device *parent; 328 struct cfdata *cf; 329 void *aux; 330 { 331 struct hdc_attach_args *ha = aux; 332 333 if (cf->cf_loc[HDCCF_DRIVE] != HDCCF_DRIVE_DEFAULT && 334 cf->cf_loc[HDCCF_DRIVE] != ha->ha_drive) 335 return 0; 336 337 if (ha->ha_drive == 2) /* Always floppy, not supported */ 338 return 0; 339 340 return 1; 341 } 342 343 void 344 rdattach(struct device *parent, struct device *self, void *aux) 345 { 346 struct hdcsoftc *sc = (void*)parent; 347 struct rdsoftc *rd = (void*)self; 348 struct hdc_attach_args *ha = aux; 349 struct disklabel *dl; 350 const char *msg; 351 352 rd->sc_drive = ha->ha_drive; 353 /* 354 * Initialize and attach the disk structure. 355 */ 356 rd->sc_disk.dk_name = rd->sc_dev.dv_xname; 357 disk_attach(&rd->sc_disk); 358 359 /* 360 * if it's not a floppy then evaluate the on-disk geometry. 361 * if necessary correct the label... 362 */ 363 rd_readgeom(sc, rd); 364 disk_printtype(rd->sc_drive, rd->sc_xbn.media_id); 365 dl = rd->sc_disk.dk_label; 366 rdmakelabel(dl, &rd->sc_xbn); 367 printf("%s", rd->sc_dev.dv_xname); 368 msg = readdisklabel(MAKEDISKDEV(cdevsw_lookup_major(&rd_cdevsw), 369 device_unit(&rd->sc_dev), RAW_PART), 370 rdstrategy, dl, NULL); 371 if (msg) 372 printf(": %s", msg); 373 printf(": size %d sectors\n", dl->d_secperunit); 374 #ifdef RDDEBUG 375 hdc_printgeom(&rd->sc_xbn); 376 #endif 377 } 378 379 void 380 hdcintr(void *arg) 381 { 382 struct hdcsoftc *sc = arg; 383 struct buf *bp; 384 385 sc->sc_status = HDC_RSTAT; 386 if (sc->sc_active == 0) 387 return; /* Complain? */ 388 389 if ((sc->sc_status & (DKC_ST_INTPEND|DKC_ST_DONE)) != 390 (DKC_ST_INTPEND|DKC_ST_DONE)) 391 return; /* Why spurious ints sometimes??? */ 392 393 bp = sc->sc_active; 394 sc->sc_active = 0; 395 if ((sc->sc_status & DKC_ST_TERMCOD) != DKC_TC_SUCCESS) { 396 int i; 397 u_char *g = (u_char *)&sc->sc_sreg; 398 399 if (sc->sc_retries++ < 3) { /* Allow 3 retries */ 400 hdcstart(sc, bp); 401 return; 402 } 403 printf("%s: failed, status 0x%x\n", 404 sc->sc_dev.dv_xname, sc->sc_status); 405 hdc_readregs(sc); 406 for (i = 0; i < 10; i++) 407 printf("%i: %x\n", i, g[i]); 408 bp->b_error = ENXIO; 409 bp->b_resid = bp->b_bcount; 410 biodone(bp); 411 vsbus_dma_intr(); 412 return; 413 } 414 415 if (bp->b_flags & B_READ) { 416 vsbus_copytoproc(bp->b_proc, sc->sc_dmabase, sc->sc_bufaddr, 417 sc->sc_xfer); 418 } 419 sc->sc_diskblk += (sc->sc_xfer/DEV_BSIZE); 420 sc->sc_bytecnt -= sc->sc_xfer; 421 sc->sc_bufaddr = (char *)sc->sc_bufaddr + sc->sc_xfer; 422 423 if (sc->sc_bytecnt == 0) { /* Finished transfer */ 424 biodone(bp); 425 vsbus_dma_intr(); 426 } else 427 hdcstart(sc, bp); 428 } 429 430 /* 431 * 432 */ 433 void 434 rdstrategy(struct buf *bp) 435 { 436 struct rdsoftc *rd; 437 struct hdcsoftc *sc; 438 struct disklabel *lp; 439 int unit, s; 440 441 unit = DISKUNIT(bp->b_dev); 442 if (unit > rd_cd.cd_ndevs || (rd = rd_cd.cd_devs[unit]) == NULL) { 443 bp->b_error = ENXIO; 444 goto done; 445 } 446 sc = (void *)device_parent(&rd->sc_dev); 447 448 lp = rd->sc_disk.dk_label; 449 if ((bounds_check_with_label(&rd->sc_disk, bp, 1)) <= 0) 450 goto done; 451 452 if (bp->b_bcount == 0) 453 goto done; 454 455 bp->b_rawblkno = 456 bp->b_blkno + lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 457 bp->b_cylinder = bp->b_rawblkno / lp->d_secpercyl; 458 459 s = splbio(); 460 BUFQ_PUT(sc->sc_q, bp); 461 if (inq == 0) { 462 inq = 1; 463 vsbus_dma_start(&sc->sc_vd); 464 } 465 splx(s); 466 return; 467 468 done: biodone(bp); 469 } 470 471 void 472 hdc_qstart(void *arg) 473 { 474 struct hdcsoftc *sc = arg; 475 476 inq = 0; 477 478 hdcstart(sc, 0); 479 if (BUFQ_PEEK(sc->sc_q)) { 480 vsbus_dma_start(&sc->sc_vd); /* More to go */ 481 inq = 1; 482 } 483 } 484 485 void 486 hdcstart(struct hdcsoftc *sc, struct buf *ob) 487 { 488 struct hdc9224_UDCreg *p = &sc->sc_creg; 489 struct disklabel *lp; 490 struct rdsoftc *rd; 491 struct buf *bp; 492 int cn, sn, tn, bn, blks; 493 volatile char ch; 494 495 if (sc->sc_active) 496 return; /* Already doing something */ 497 498 499 if (ob == 0) { 500 bp = BUFQ_GET(sc->sc_q); 501 if (bp == NULL) 502 return; /* Nothing to do */ 503 sc->sc_bufaddr = bp->b_data; 504 sc->sc_diskblk = bp->b_rawblkno; 505 sc->sc_bytecnt = bp->b_bcount; 506 sc->sc_retries = 0; 507 bp->b_resid = 0; 508 } else 509 bp = ob; 510 511 rd = rd_cd.cd_devs[DISKUNIT(bp->b_dev)]; 512 hdc_rdselect(sc, rd->sc_drive); 513 sc->sc_active = bp; 514 515 bn = sc->sc_diskblk; 516 lp = rd->sc_disk.dk_label; 517 if (bn) { 518 cn = bn / lp->d_secpercyl; 519 sn = bn % lp->d_secpercyl; 520 tn = sn / lp->d_nsectors; 521 sn = sn % lp->d_nsectors; 522 } else 523 cn = sn = tn = 0; 524 525 cn++; /* first cylinder is reserved */ 526 527 bzero(p, sizeof(struct hdc9224_UDCreg)); 528 529 /* 530 * Tricky thing: the controller do itself only increase the sector 531 * number, not the track or cylinder number. Therefore the driver 532 * is not allowed to have transfers that crosses track boundaries. 533 */ 534 blks = sc->sc_bytecnt/DEV_BSIZE; 535 if ((sn + blks) > lp->d_nsectors) 536 blks = lp->d_nsectors - sn; 537 538 p->udc_dsect = sn; 539 p->udc_dcyl = cn & 0xff; 540 p->udc_dhead = ((cn >> 4) & 0x70) | tn; 541 p->udc_scnt = blks; 542 543 p->udc_rtcnt = UDC_RC_RTRYCNT; 544 p->udc_mode = UDC_MD_HDD; 545 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWRFLT; 546 hdc_writeregs(sc); 547 548 /* Count up vars */ 549 sc->sc_xfer = blks * DEV_BSIZE; 550 551 ch = HDC_RSTAT; /* Avoid pending interrupts */ 552 WAIT; 553 vsbus_clrintr(sc->sc_intbit); /* Clear pending int's */ 554 555 if (bp->b_flags & B_READ) { 556 HDC_WCMD(DKC_CMD_READ_HDD); 557 } else { 558 vsbus_copyfromproc(bp->b_proc, sc->sc_bufaddr, sc->sc_dmabase, 559 sc->sc_xfer); 560 HDC_WCMD(DKC_CMD_WRITE_HDD); 561 } 562 } 563 564 void 565 rd_readgeom(struct hdcsoftc *sc, struct rdsoftc *rd) 566 { 567 struct hdc9224_UDCreg *p = &sc->sc_creg; 568 569 hdc_rdselect(sc, rd->sc_drive); /* select drive right now */ 570 571 bzero(p, sizeof(struct hdc9224_UDCreg)); 572 573 p->udc_scnt = 1; 574 p->udc_rtcnt = UDC_RC_RTRYCNT; 575 p->udc_mode = UDC_MD_HDD; 576 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWPROT; 577 hdc_writeregs(sc); 578 sc->sc_status = 0; 579 HDC_WCMD(DKC_CMD_READ_HDD|2); 580 while ((sc->sc_status & DKC_ST_INTPEND) == 0) 581 ; 582 bcopy(sc->sc_dmabase, &rd->sc_xbn, sizeof(struct rdgeom)); 583 } 584 585 #ifdef RDDEBUG 586 /* 587 * display the contents of the on-disk geometry structure 588 */ 589 void 590 hdc_printgeom(p) 591 struct rdgeom *p; 592 { 593 printf ("**DiskData** XBNs: %ld, DBNs: %ld, LBNs: %ld, RBNs: %ld\n", 594 p->xbn_count, p->dbn_count, p->lbn_count, p->rbn_count); 595 printf ("sec/track: %d, tracks: %d, cyl: %d, precomp/reduced: %d/%d\n", 596 p->nspt, p->ntracks, p->ncylinders, p->precomp, p->reduced); 597 printf ("seek-rate: %d, crc/eec: %s, RCT: %d, RCT-copies: %d\n", 598 p->seek_rate, p->crc_eec?"EEC":"CRC", p->rct, p->rct_ncopies); 599 printf ("media-ID: %lx, interleave: %d, headskew: %d, cylskew: %d\n", 600 p->media_id, p->interleave, p->headskew, p->cylskew); 601 printf ("gap0: %d, gap1: %d, gap2: %d, gap3: %d, sync-value: %d\n", 602 p->gap0_size, p->gap1_size, p->gap2_size, p->gap3_size, 603 p->sync_value); 604 } 605 #endif 606 607 /* 608 * Return the size of a partition, if known, or -1 if not. 609 */ 610 int 611 rdsize(dev_t dev) 612 { 613 struct rdsoftc *rd; 614 int unit = DISKUNIT(dev); 615 int size; 616 617 if (unit >= rd_cd.cd_ndevs || rd_cd.cd_devs[unit] == 0) 618 return -1; 619 rd = rd_cd.cd_devs[unit]; 620 size = rd->sc_disk.dk_label->d_partitions[DISKPART(dev)].p_size * 621 (rd->sc_disk.dk_label->d_secsize / DEV_BSIZE); 622 623 return (size); 624 } 625 626 /* 627 * 628 */ 629 int 630 rdopen(dev_t dev, int flag, int fmt, struct lwp *l) 631 { 632 struct rdsoftc *rd; 633 int unit, part; 634 635 unit = DISKUNIT(dev); 636 if (unit >= rd_cd.cd_ndevs) 637 return ENXIO; 638 rd = rd_cd.cd_devs[unit]; 639 if (rd == 0) 640 return ENXIO; 641 642 part = DISKPART(dev); 643 if (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 *rd; 667 int part; 668 669 rd = rd_cd.cd_devs[DISKUNIT(dev)]; 670 part = DISKPART(dev); 671 672 switch (fmt) { 673 case S_IFCHR: 674 rd->sc_disk.dk_copenmask &= ~(1 << part); 675 break; 676 case S_IFBLK: 677 rd->sc_disk.dk_bopenmask &= ~(1 << part); 678 break; 679 } 680 rd->sc_disk.dk_openmask = 681 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 682 683 return (0); 684 } 685 686 /* 687 * 688 */ 689 int 690 rdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 691 { 692 struct rdsoftc *rd = rd_cd.cd_devs[DISKUNIT(dev)]; 693 struct disklabel *lp = rd->sc_disk.dk_label; 694 int err = 0; 695 696 switch (cmd) { 697 case DIOCGDINFO: 698 bcopy(lp, addr, sizeof (struct disklabel)); 699 break; 700 701 case DIOCGPART: 702 ((struct partinfo *)addr)->disklab = lp; 703 ((struct partinfo *)addr)->part = 704 &lp->d_partitions[DISKPART(dev)]; 705 break; 706 707 case DIOCWDINFO: 708 case DIOCSDINFO: 709 if ((flag & FWRITE) == 0) 710 return EBADF; 711 else 712 err = (cmd == DIOCSDINFO ? 713 setdisklabel(lp, (struct disklabel *)addr, 0, 0) : 714 writedisklabel(dev, rdstrategy, lp, 0)); 715 break; 716 717 case DIOCGDEFLABEL: 718 bzero(lp, sizeof(struct disklabel)); 719 rdmakelabel(lp, &rd->sc_xbn); 720 break; 721 722 case DIOCWLABEL: 723 if ((flag & FWRITE) == 0) 724 err = EBADF; 725 break; 726 727 default: 728 err = ENOTTY; 729 } 730 return err; 731 } 732 733 /* 734 * 735 */ 736 int 737 rdread(dev_t dev, struct uio *uio, int flag) 738 { 739 return (physio (rdstrategy, NULL, dev, B_READ, minphys, uio)); 740 } 741 742 /* 743 * 744 */ 745 int 746 rdwrite(dev_t dev, struct uio *uio, int flag) 747 { 748 return (physio (rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 749 } 750 751 /* 752 * we have to wait 0.7 usec between two accesses to any of the 753 * dkc-registers, on a VS2000 with 1 MIPS, this is roughly one 754 * instruction. Thus the loop-overhead will be enough... 755 */ 756 static void 757 hdc_readregs(struct hdcsoftc *sc) 758 { 759 int i; 760 char *p; 761 762 HDC_WCMD(DKC_CMD_SETREGPTR); 763 WAIT; 764 p = (void*)&sc->sc_sreg; 765 for (i=0; i<10; i++) { 766 *p++ = HDC_RREG; /* dkc_reg auto-increments */ 767 WAIT; 768 } 769 } 770 771 static void 772 hdc_writeregs(struct hdcsoftc *sc) 773 { 774 int i; 775 char *p; 776 777 HDC_WCMD(DKC_CMD_SETREGPTR); 778 p = (void*)&sc->sc_creg; 779 for (i=0; i<10; i++) { 780 HDC_WREG(*p++); /* dkc_reg auto-increments */ 781 WAIT; 782 } 783 } 784 785 /* 786 * hdc_command() issues a command and polls the intreq-register 787 * to find when command has completed 788 */ 789 int 790 hdc_command(struct hdcsoftc *sc, int cmd) 791 { 792 hdc_writeregs(sc); /* write the prepared registers */ 793 HDC_WCMD(cmd); 794 WAIT; 795 return (0); 796 } 797 798 int 799 hdc_rdselect(struct hdcsoftc *sc, int unit) 800 { 801 struct hdc9224_UDCreg *p = &sc->sc_creg; 802 int error; 803 804 /* 805 * bring "creg" in some known-to-work state and 806 * select the drive with the DRIVE SELECT command. 807 */ 808 bzero(p, sizeof(struct hdc9224_UDCreg)); 809 810 p->udc_rtcnt = UDC_RC_HDD_READ; 811 p->udc_mode = UDC_MD_HDD; 812 p->udc_term = UDC_TC_HDD; 813 814 error = hdc_command(sc, DKC_CMD_DRSEL_HDD | unit); 815 816 return (error); 817 } 818 819 void 820 rdmakelabel(struct disklabel *dl, struct rdgeom *g) 821 { 822 int n, p = 0; 823 824 dl->d_bbsize = BBSIZE; 825 dl->d_sbsize = SBLOCKSIZE; 826 dl->d_typename[p++] = MSCP_MID_CHAR(2, g->media_id); 827 dl->d_typename[p++] = MSCP_MID_CHAR(1, g->media_id); 828 if (MSCP_MID_ECH(0, g->media_id)) 829 dl->d_typename[p++] = MSCP_MID_CHAR(0, g->media_id); 830 n = MSCP_MID_NUM(g->media_id); 831 if (n > 99) { 832 dl->d_typename[p++] = '1'; 833 n -= 100; 834 } 835 if (n > 9) { 836 dl->d_typename[p++] = (n / 10) + '0'; 837 n %= 10; 838 } 839 dl->d_typename[p++] = n + '0'; 840 dl->d_typename[p] = 0; 841 dl->d_type = DTYPE_MSCP; /* XXX - what to use here??? */ 842 dl->d_rpm = 3600; 843 dl->d_secsize = DEV_BSIZE; 844 845 dl->d_secperunit = g->lbn_count; 846 dl->d_nsectors = g->nspt; 847 dl->d_ntracks = g->ntracks; 848 dl->d_secpercyl = dl->d_nsectors * dl->d_ntracks; 849 dl->d_ncylinders = dl->d_secperunit / dl->d_secpercyl; 850 851 dl->d_npartitions = MAXPARTITIONS; 852 dl->d_partitions[0].p_size = dl->d_partitions[2].p_size = 853 dl->d_secperunit; 854 dl->d_partitions[0].p_offset = dl->d_partitions[2].p_offset = 0; 855 dl->d_interleave = dl->d_headswitch = 1; 856 dl->d_magic = dl->d_magic2 = DISKMAGIC; 857 dl->d_checksum = dkcksum(dl); 858 } 859
Indexes created Sun Oct 19 02:09:48 GMT 2025