hdc9224.c revision 1.18
1 /* $NetBSD: hdc9224.c,v 1.18 2002/07/22 21:48:38 hannken 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/param.h> 54 #include <sys/systm.h> 55 #include <sys/kernel.h> 56 #include <sys/conf.h> 57 #include <sys/file.h> 58 #include <sys/stat.h> 59 #include <sys/ioctl.h> 60 #include <sys/buf.h> 61 #include <sys/proc.h> 62 #include <sys/user.h> 63 #include <sys/map.h> 64 #include <sys/device.h> 65 #include <sys/dkstat.h> 66 #include <sys/disklabel.h> 67 #include <sys/disk.h> 68 #include <sys/syslog.h> 69 #include <sys/reboot.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/pte.h> 77 #include <machine/sid.h> 78 #include <machine/cpu.h> 79 #include <machine/uvax.h> 80 #include <machine/ka410.h> 81 #include <machine/vsbus.h> 82 #include <machine/rpb.h> 83 #include <machine/scb.h> 84 85 #include <dev/mscp/mscp.h> /* For DEC disk encoding */ 86 87 #include <vax/vsa/hdc9224.h> 88 89 #include "ioconf.h" 90 #include "locators.h" 91 92 93 /* 94 * on-disk geometry block 95 */ 96 #define _aP __attribute__ ((packed)) /* force byte-alignment */ 97 struct rdgeom { 98 char mbz[10]; /* 10 bytes of zero */ 99 long xbn_count _aP; /* number of XBNs */ 100 long dbn_count _aP; /* number of DBNs */ 101 long lbn_count _aP; /* number of LBNs (Logical-Block-Numbers) */ 102 long rbn_count _aP; /* number of RBNs (Replacement-Block-Numbers) */ 103 short nspt; /* number of sectors per track */ 104 short ntracks; /* number of tracks */ 105 short ncylinders; /* number of cylinders */ 106 short precomp; /* first cylinder for write precompensation */ 107 short reduced; /* first cylinder for reduced write current */ 108 short seek_rate; /* seek rate or zero for buffered seeks */ 109 short crc_eec; /* 0 if CRC, 1 if ECC is being used */ 110 short rct; /* "replacement control table" (RCT) */ 111 short rct_ncopies; /* number of copies of the RCT */ 112 long media_id _aP; /* media identifier */ 113 short interleave; /* sector-to-sector interleave */ 114 short headskew; /* head-to-head skew */ 115 short cylskew; /* cylinder-to-cylinder skew */ 116 short gap0_size; /* size of GAP 0 in the MFM format */ 117 short gap1_size; /* size of GAP 1 in the MFM format */ 118 short gap2_size; /* size of GAP 2 in the MFM format */ 119 short gap3_size; /* size of GAP 3 in the MFM format */ 120 short sync_value; /* sync value used when formatting */ 121 char reserved[32]; /* reserved for use by the RQDX formatter */ 122 short serial_number; /* serial number */ 123 #if 0 /* we don't need these 412 useless bytes ... */ 124 char fill[412-2]; /* Filler bytes to the end of the block */ 125 short checksum; /* checksum over the XBN */ 126 #endif 127 }; 128 129 /* 130 * Software status 131 */ 132 struct rdsoftc { 133 struct device sc_dev; /* must be here! (pseudo-OOP:) */ 134 struct disk sc_disk; /* disklabel etc. */ 135 struct rdgeom sc_xbn; /* on-disk geometry information */ 136 int sc_drive; /* physical unit number */ 137 }; 138 139 struct hdcsoftc { 140 struct device sc_dev; /* must be here (pseudo-OOP:) */ 141 struct evcnt sc_intrcnt; 142 struct vsbus_dma sc_vd; 143 vaddr_t sc_regs; /* register addresses */ 144 struct bufq_state sc_q; 145 struct buf *sc_active; 146 struct hdc9224_UDCreg sc_creg; /* (command) registers to be written */ 147 struct hdc9224_UDCreg sc_sreg; /* (status) registers being read */ 148 caddr_t sc_dmabase; /* */ 149 int sc_dmasize; 150 caddr_t sc_bufaddr; /* Current in-core address */ 151 int sc_diskblk; /* Current block on disk */ 152 int sc_bytecnt; /* How much left to transfer */ 153 int sc_xfer; /* Current transfer size */ 154 int sc_retries; 155 volatile u_char sc_status; /* last status from interrupt */ 156 char sc_intbit; 157 }; 158 159 struct hdc_attach_args { 160 int ha_drive; 161 }; 162 163 /* 164 * prototypes for (almost) all the internal routines 165 */ 166 static int hdcmatch(struct device *, struct cfdata *, void *); 167 static void hdcattach(struct device *, struct device *, void *); 168 static int hdcprint(void *, const char *); 169 static int rdmatch(struct device *, struct cfdata *, void *); 170 static void rdattach(struct device *, struct device *, void *); 171 static void hdcintr(void *); 172 static int hdc_command(struct hdcsoftc *, int); 173 static void rd_readgeom(struct hdcsoftc *, struct rdsoftc *); 174 #ifdef RDDEBUG 175 static void hdc_printgeom( struct rdgeom *); 176 #endif 177 static void hdc_writeregs(struct hdcsoftc *); 178 static void hdcstart(struct hdcsoftc *, struct buf *); 179 static int hdc_rdselect(struct hdcsoftc *, int); 180 static void rdmakelabel(struct disklabel *, struct rdgeom *); 181 static void hdc_writeregs(struct hdcsoftc *); 182 static void hdc_readregs(struct hdcsoftc *); 183 static void hdc_qstart(void *); 184 185 bdev_decl(rd); 186 cdev_decl(rd); 187 188 struct cfattach hdc_ca = { 189 sizeof(struct hdcsoftc), hdcmatch, hdcattach 190 }; 191 192 struct cfattach rd_ca = { 193 sizeof(struct rdsoftc), rdmatch, rdattach 194 }; 195 196 197 /* At least 0.7 uS between register accesses */ 198 static int rd_dmasize, inq = 0; 199 static int u; 200 #define WAIT asm("movl %0,%0;movl %0,%0;movl %0,%0; movl %0,%0" :: "m"(u)) 201 202 #define HDC_WREG(x) *(volatile char *)(sc->sc_regs) = (x) 203 #define HDC_RREG *(volatile char *)(sc->sc_regs) 204 #define HDC_WCMD(x) *(volatile char *)(sc->sc_regs + 4) = (x) 205 #define HDC_RSTAT *(volatile char *)(sc->sc_regs + 4) 206 207 /* 208 * new-config's hdcmatch() is similiar to old-config's hdcprobe(), 209 * thus we probe for the existence of the controller and reset it. 210 * NB: we can't initialize the controller yet, since space for hdcsoftc 211 * is not yet allocated. Thus we do this in hdcattach()... 212 */ 213 int 214 hdcmatch(struct device *parent, struct cfdata *cf, void *aux) 215 { 216 struct vsbus_attach_args *va = aux; 217 volatile char *hdc_csr = (char *)va->va_addr; 218 int i; 219 220 u = 8; /* !!! - GCC */ 221 222 if (vax_boardtype == VAX_BTYP_49 || vax_boardtype == VAX_BTYP_46 223 || vax_boardtype == VAX_BTYP_48 || vax_boardtype == VAX_BTYP_53) 224 return 0; 225 226 hdc_csr[4] = DKC_CMD_RESET; /* reset chip */ 227 for (i = 0; i < 1000; i++) { 228 DELAY(1000); 229 if (hdc_csr[4] & DKC_ST_DONE) 230 break; 231 } 232 if (i == 100) 233 return 0; /* No response to reset */ 234 235 hdc_csr[4] = DKC_CMD_SETREGPTR|UDC_TERM; 236 WAIT; 237 hdc_csr[0] = UDC_TC_CRCPRE|UDC_TC_INTDONE; 238 WAIT; 239 hdc_csr[4] = DKC_CMD_DRDESELECT; /* Should be harmless */ 240 DELAY(1000); 241 return (1); 242 } 243 244 int 245 hdcprint(void *aux, const char *name) 246 { 247 struct hdc_attach_args *ha = aux; 248 249 if (name) 250 printf ("RD?? at %s drive %d", name, ha->ha_drive); 251 return UNCONF; 252 } 253 254 /* 255 * hdc_attach() probes for all possible devices 256 */ 257 void 258 hdcattach(struct device *parent, struct device *self, void *aux) 259 { 260 struct vsbus_attach_args *va = aux; 261 struct hdcsoftc *sc = (void *)self; 262 struct hdc_attach_args ha; 263 int status, i; 264 265 printf ("\n"); 266 /* 267 * Get interrupt vector, enable instrumentation. 268 */ 269 scb_vecalloc(va->va_cvec, hdcintr, sc, SCB_ISTACK, &sc->sc_intrcnt); 270 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 271 self->dv_xname, "intr"); 272 273 sc->sc_regs = vax_map_physmem(va->va_paddr, 1); 274 sc->sc_dmabase = (caddr_t)va->va_dmaaddr; 275 sc->sc_dmasize = va->va_dmasize; 276 sc->sc_intbit = va->va_maskno; 277 rd_dmasize = min(MAXPHYS, sc->sc_dmasize); /* Used in rd_minphys */ 278 279 sc->sc_vd.vd_go = hdc_qstart; 280 sc->sc_vd.vd_arg = sc; 281 /* 282 * Reset controller. 283 */ 284 HDC_WCMD(DKC_CMD_RESET); 285 DELAY(1000); 286 status = HDC_RSTAT; 287 if (status != (DKC_ST_DONE|DKC_TC_SUCCESS)) { 288 printf("%s: RESET failed, status 0x%x\n", 289 sc->sc_dev.dv_xname, status); 290 return; 291 } 292 bufq_alloc(&sc->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 293 294 /* 295 * now probe for all possible hard drives 296 */ 297 for (i = 0; i < 4; i++) { 298 if (i == 2) /* Floppy, needs special handling */ 299 continue; 300 HDC_WCMD(DKC_CMD_DRSELECT | i); 301 DELAY(1000); 302 status = HDC_RSTAT; 303 ha.ha_drive = i; 304 if ((status & DKC_ST_TERMCOD) == DKC_TC_SUCCESS) 305 config_found(self, (void *)&ha, hdcprint); 306 } 307 } 308 309 /* 310 * rdmatch() probes for the existence of a RD-type disk/floppy 311 */ 312 int 313 rdmatch(parent, cf, aux) 314 struct device *parent; 315 struct cfdata *cf; 316 void *aux; 317 { 318 struct hdc_attach_args *ha = aux; 319 320 if (cf->cf_loc[HDCCF_DRIVE] != HDCCF_DRIVE_DEFAULT && 321 cf->cf_loc[HDCCF_DRIVE] != ha->ha_drive) 322 return 0; 323 324 if (ha->ha_drive == 2) /* Always floppy, not supported */ 325 return 0; 326 327 return 1; 328 } 329 330 #define RDMAJOR 19 331 332 void 333 rdattach(struct device *parent, struct device *self, void *aux) 334 { 335 struct hdcsoftc *sc = (void*)parent; 336 struct rdsoftc *rd = (void*)self; 337 struct hdc_attach_args *ha = aux; 338 struct disklabel *dl; 339 char *msg; 340 341 rd->sc_drive = ha->ha_drive; 342 /* 343 * Initialize and attach the disk structure. 344 */ 345 rd->sc_disk.dk_name = rd->sc_dev.dv_xname; 346 disk_attach(&rd->sc_disk); 347 348 /* 349 * if it's not a floppy then evaluate the on-disk geometry. 350 * if necessary correct the label... 351 */ 352 rd_readgeom(sc, rd); 353 disk_printtype(rd->sc_drive, rd->sc_xbn.media_id); 354 dl = rd->sc_disk.dk_label; 355 rdmakelabel(dl, &rd->sc_xbn); 356 printf("%s", rd->sc_dev.dv_xname); 357 msg = readdisklabel(MAKEDISKDEV(RDMAJOR, rd->sc_dev.dv_unit, RAW_PART), 358 rdstrategy, dl, NULL); 359 if (msg) 360 printf(": %s", msg); 361 printf(": size %d sectors\n", dl->d_secperunit); 362 #ifdef RDDEBUG 363 hdc_printgeom(&rd->sc_xbn); 364 #endif 365 } 366 367 void 368 hdcintr(void *arg) 369 { 370 struct hdcsoftc *sc = arg; 371 struct buf *bp; 372 373 sc->sc_status = HDC_RSTAT; 374 if (sc->sc_active == 0) 375 return; /* Complain? */ 376 377 if ((sc->sc_status & (DKC_ST_INTPEND|DKC_ST_DONE)) != 378 (DKC_ST_INTPEND|DKC_ST_DONE)) 379 return; /* Why spurious ints sometimes??? */ 380 381 bp = sc->sc_active; 382 sc->sc_active = 0; 383 if ((sc->sc_status & DKC_ST_TERMCOD) != DKC_TC_SUCCESS) { 384 int i; 385 u_char *g = (u_char *)&sc->sc_sreg; 386 387 if (sc->sc_retries++ < 3) { /* Allow 3 retries */ 388 hdcstart(sc, bp); 389 return; 390 } 391 printf("%s: failed, status 0x%x\n", 392 sc->sc_dev.dv_xname, sc->sc_status); 393 hdc_readregs(sc); 394 for (i = 0; i < 10; i++) 395 printf("%i: %x\n", i, g[i]); 396 bp->b_flags |= B_ERROR; 397 bp->b_error = ENXIO; 398 bp->b_resid = bp->b_bcount; 399 biodone(bp); 400 vsbus_dma_intr(); 401 return; 402 } 403 404 if (bp->b_flags & B_READ) { 405 vsbus_copytoproc(bp->b_proc, sc->sc_dmabase, sc->sc_bufaddr, 406 sc->sc_xfer); 407 } 408 sc->sc_diskblk += (sc->sc_xfer/DEV_BSIZE); 409 sc->sc_bytecnt -= sc->sc_xfer; 410 sc->sc_bufaddr += sc->sc_xfer; 411 412 if (sc->sc_bytecnt == 0) { /* Finished transfer */ 413 biodone(bp); 414 vsbus_dma_intr(); 415 } else 416 hdcstart(sc, bp); 417 } 418 419 /* 420 * 421 */ 422 void 423 rdstrategy(struct buf *bp) 424 { 425 struct rdsoftc *rd; 426 struct hdcsoftc *sc; 427 struct disklabel *lp; 428 int unit, s; 429 430 unit = DISKUNIT(bp->b_dev); 431 if (unit > rd_cd.cd_ndevs || (rd = rd_cd.cd_devs[unit]) == NULL) { 432 bp->b_error = ENXIO; 433 bp->b_flags |= B_ERROR; 434 goto done; 435 } 436 sc = (void *)rd->sc_dev.dv_parent; 437 438 lp = rd->sc_disk.dk_label; 439 if ((bounds_check_with_label(bp, lp, 1)) <= 0) 440 goto done; 441 442 if (bp->b_bcount == 0) 443 goto done; 444 445 bp->b_rawblkno = 446 bp->b_blkno + lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 447 bp->b_cylinder = bp->b_rawblkno / lp->d_secpercyl; 448 449 s = splbio(); 450 BUFQ_PUT(&sc->sc_q, bp); 451 if (inq == 0) { 452 inq = 1; 453 vsbus_dma_start(&sc->sc_vd); 454 } 455 splx(s); 456 return; 457 458 done: biodone(bp); 459 } 460 461 void 462 hdc_qstart(void *arg) 463 { 464 struct hdcsoftc *sc = arg; 465 466 inq = 0; 467 468 hdcstart(sc, 0); 469 if (BUFQ_PEEK(&sc->sc_q)) { 470 vsbus_dma_start(&sc->sc_vd); /* More to go */ 471 inq = 1; 472 } 473 } 474 475 void 476 hdcstart(struct hdcsoftc *sc, struct buf *ob) 477 { 478 struct hdc9224_UDCreg *p = &sc->sc_creg; 479 struct disklabel *lp; 480 struct rdsoftc *rd; 481 struct buf *bp; 482 int cn, sn, tn, bn, blks; 483 volatile char ch; 484 485 if (sc->sc_active) 486 return; /* Already doing something */ 487 488 489 if (ob == 0) { 490 bp = BUFQ_GET(&sc->sc_q); 491 if (bp == NULL) 492 return; /* Nothing to do */ 493 sc->sc_bufaddr = bp->b_data; 494 sc->sc_diskblk = bp->b_rawblkno; 495 sc->sc_bytecnt = bp->b_bcount; 496 sc->sc_retries = 0; 497 bp->b_resid = 0; 498 } else 499 bp = ob; 500 501 rd = rd_cd.cd_devs[DISKUNIT(bp->b_dev)]; 502 hdc_rdselect(sc, rd->sc_drive); 503 sc->sc_active = bp; 504 505 bn = sc->sc_diskblk; 506 lp = rd->sc_disk.dk_label; 507 if (bn) { 508 cn = bn / lp->d_secpercyl; 509 sn = bn % lp->d_secpercyl; 510 tn = sn / lp->d_nsectors; 511 sn = sn % lp->d_nsectors; 512 } else 513 cn = sn = tn = 0; 514 515 cn++; /* first cylinder is reserved */ 516 517 bzero(p, sizeof(struct hdc9224_UDCreg)); 518 519 /* 520 * Tricky thing: the controller do itself only increase the sector 521 * number, not the track or cylinder number. Therefore the driver 522 * is not allowed to have transfers that crosses track boundaries. 523 */ 524 blks = sc->sc_bytecnt/DEV_BSIZE; 525 if ((sn + blks) > lp->d_nsectors) 526 blks = lp->d_nsectors - sn; 527 528 p->udc_dsect = sn; 529 p->udc_dcyl = cn & 0xff; 530 p->udc_dhead = ((cn >> 4) & 0x70) | tn; 531 p->udc_scnt = blks; 532 533 p->udc_rtcnt = UDC_RC_RTRYCNT; 534 p->udc_mode = UDC_MD_HDD; 535 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWRFLT; 536 hdc_writeregs(sc); 537 538 /* Count up vars */ 539 sc->sc_xfer = blks * DEV_BSIZE; 540 541 ch = HDC_RSTAT; /* Avoid pending interrupts */ 542 WAIT; 543 vsbus_clrintr(sc->sc_intbit); /* Clear pending int's */ 544 545 if (bp->b_flags & B_READ) { 546 HDC_WCMD(DKC_CMD_READ_HDD); 547 } else { 548 vsbus_copyfromproc(bp->b_proc, sc->sc_bufaddr, sc->sc_dmabase, 549 sc->sc_xfer); 550 HDC_WCMD(DKC_CMD_WRITE_HDD); 551 } 552 } 553 554 void 555 rd_readgeom(struct hdcsoftc *sc, struct rdsoftc *rd) 556 { 557 struct hdc9224_UDCreg *p = &sc->sc_creg; 558 559 hdc_rdselect(sc, rd->sc_drive); /* select drive right now */ 560 561 bzero(p, sizeof(struct hdc9224_UDCreg)); 562 563 p->udc_scnt = 1; 564 p->udc_rtcnt = UDC_RC_RTRYCNT; 565 p->udc_mode = UDC_MD_HDD; 566 p->udc_term = UDC_TC_CRCPRE|UDC_TC_INTDONE|UDC_TC_TDELDAT|UDC_TC_TWPROT; 567 hdc_writeregs(sc); 568 sc->sc_status = 0; 569 HDC_WCMD(DKC_CMD_READ_HDD|2); 570 while ((sc->sc_status & DKC_ST_INTPEND) == 0) 571 ; 572 bcopy(sc->sc_dmabase, &rd->sc_xbn, sizeof(struct rdgeom)); 573 } 574 575 #ifdef RDDEBUG 576 /* 577 * display the contents of the on-disk geometry structure 578 */ 579 void 580 hdc_printgeom(p) 581 struct rdgeom *p; 582 { 583 printf ("**DiskData** XBNs: %ld, DBNs: %ld, LBNs: %ld, RBNs: %ld\n", 584 p->xbn_count, p->dbn_count, p->lbn_count, p->rbn_count); 585 printf ("sec/track: %d, tracks: %d, cyl: %d, precomp/reduced: %d/%d\n", 586 p->nspt, p->ntracks, p->ncylinders, p->precomp, p->reduced); 587 printf ("seek-rate: %d, crc/eec: %s, RCT: %d, RCT-copies: %d\n", 588 p->seek_rate, p->crc_eec?"EEC":"CRC", p->rct, p->rct_ncopies); 589 printf ("media-ID: %lx, interleave: %d, headskew: %d, cylskew: %d\n", 590 p->media_id, p->interleave, p->headskew, p->cylskew); 591 printf ("gap0: %d, gap1: %d, gap2: %d, gap3: %d, sync-value: %d\n", 592 p->gap0_size, p->gap1_size, p->gap2_size, p->gap3_size, 593 p->sync_value); 594 } 595 #endif 596 597 /* 598 * Return the size of a partition, if known, or -1 if not. 599 */ 600 int 601 rdsize(dev_t dev) 602 { 603 struct rdsoftc *rd; 604 int unit = DISKUNIT(dev); 605 int size; 606 607 if (unit >= rd_cd.cd_ndevs || rd_cd.cd_devs[unit] == 0) 608 return -1; 609 rd = rd_cd.cd_devs[unit]; 610 size = rd->sc_disk.dk_label->d_partitions[DISKPART(dev)].p_size * 611 (rd->sc_disk.dk_label->d_secsize / DEV_BSIZE); 612 613 return (size); 614 } 615 616 /* 617 * 618 */ 619 int 620 rdopen(dev_t dev, int flag, int fmt, struct proc *p) 621 { 622 struct rdsoftc *rd; 623 int unit, part; 624 625 unit = DISKUNIT(dev); 626 if (unit >= rd_cd.cd_ndevs) 627 return ENXIO; 628 rd = rd_cd.cd_devs[unit]; 629 if (rd == 0) 630 return ENXIO; 631 632 part = DISKPART(dev); 633 if (part >= rd->sc_disk.dk_label->d_npartitions) 634 return ENXIO; 635 636 switch (fmt) { 637 case S_IFCHR: 638 rd->sc_disk.dk_copenmask |= (1 << part); 639 break; 640 case S_IFBLK: 641 rd->sc_disk.dk_bopenmask |= (1 << part); 642 break; 643 } 644 rd->sc_disk.dk_openmask = 645 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 646 647 return 0; 648 } 649 650 /* 651 * 652 */ 653 int 654 rdclose(dev_t dev, int flag, int fmt, struct proc *p) 655 { 656 struct rdsoftc *rd; 657 int part; 658 659 rd = rd_cd.cd_devs[DISKUNIT(dev)]; 660 part = DISKPART(dev); 661 662 switch (fmt) { 663 case S_IFCHR: 664 rd->sc_disk.dk_copenmask &= ~(1 << part); 665 break; 666 case S_IFBLK: 667 rd->sc_disk.dk_bopenmask &= ~(1 << part); 668 break; 669 } 670 rd->sc_disk.dk_openmask = 671 rd->sc_disk.dk_copenmask | rd->sc_disk.dk_bopenmask; 672 673 return (0); 674 } 675 676 /* 677 * 678 */ 679 int 680 rdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 681 { 682 struct rdsoftc *rd = rd_cd.cd_devs[DISKUNIT(dev)]; 683 struct disklabel *lp = rd->sc_disk.dk_label; 684 int err = 0; 685 686 switch (cmd) { 687 case DIOCGDINFO: 688 bcopy(lp, addr, sizeof (struct disklabel)); 689 break; 690 691 case DIOCGPART: 692 ((struct partinfo *)addr)->disklab = lp; 693 ((struct partinfo *)addr)->part = 694 &lp->d_partitions[DISKPART(dev)]; 695 break; 696 697 case DIOCWDINFO: 698 case DIOCSDINFO: 699 if ((flag & FWRITE) == 0) 700 return EBADF; 701 else 702 err = (cmd == DIOCSDINFO ? 703 setdisklabel(lp, (struct disklabel *)addr, 0, 0) : 704 writedisklabel(dev, rdstrategy, lp, 0)); 705 break; 706 707 case DIOCGDEFLABEL: 708 bzero(lp, sizeof(struct disklabel)); 709 rdmakelabel(lp, &rd->sc_xbn); 710 break; 711 712 case DIOCWLABEL: 713 if ((flag & FWRITE) == 0) 714 err = EBADF; 715 break; 716 717 default: 718 err = ENOTTY; 719 } 720 return err; 721 } 722 723 /* 724 * 725 */ 726 int 727 rdread(dev_t dev, struct uio *uio, int flag) 728 { 729 return (physio (rdstrategy, NULL, dev, B_READ, minphys, uio)); 730 } 731 732 /* 733 * 734 */ 735 int 736 rdwrite(dev_t dev, struct uio *uio, int flag) 737 { 738 return (physio (rdstrategy, NULL, dev, B_WRITE, minphys, uio)); 739 } 740 741 /* 742 * 743 */ 744 int 745 rddump(dev_t dev, daddr_t daddr, caddr_t addr, size_t size) 746 { 747 return 0; 748 } 749 750 /* 751 * we have to wait 0.7 usec between two accesses to any of the 752 * dkc-registers, on a VS2000 with 1 MIPS, this is roughly one 753 * instruction. Thus the loop-overhead will be enough... 754 */ 755 static void 756 hdc_readregs(struct hdcsoftc *sc) 757 { 758 int i; 759 char *p; 760 761 HDC_WCMD(DKC_CMD_SETREGPTR); 762 WAIT; 763 p = (void*)&sc->sc_sreg; 764 for (i=0; i<10; i++) { 765 *p++ = HDC_RREG; /* dkc_reg auto-increments */ 766 WAIT; 767 } 768 } 769 770 static void 771 hdc_writeregs(struct hdcsoftc *sc) 772 { 773 int i; 774 char *p; 775 776 HDC_WCMD(DKC_CMD_SETREGPTR); 777 p = (void*)&sc->sc_creg; 778 for (i=0; i<10; i++) { 779 HDC_WREG(*p++); /* dkc_reg auto-increments */ 780 WAIT; 781 } 782 } 783 784 /* 785 * hdc_command() issues a command and polls the intreq-register 786 * to find when command has completed 787 */ 788 int 789 hdc_command(struct hdcsoftc *sc, int cmd) 790 { 791 hdc_writeregs(sc); /* write the prepared registers */ 792 HDC_WCMD(cmd); 793 WAIT; 794 return (0); 795 } 796 797 int 798 hdc_rdselect(struct hdcsoftc *sc, int unit) 799 { 800 struct hdc9224_UDCreg *p = &sc->sc_creg; 801 int error; 802 803 /* 804 * bring "creg" in some known-to-work state and 805 * select the drive with the DRIVE SELECT command. 806 */ 807 bzero(p, sizeof(struct hdc9224_UDCreg)); 808 809 p->udc_rtcnt = UDC_RC_HDD_READ; 810 p->udc_mode = UDC_MD_HDD; 811 p->udc_term = UDC_TC_HDD; 812 813 error = hdc_command(sc, DKC_CMD_DRSEL_HDD | unit); 814 815 return (error); 816 } 817 818 void 819 rdmakelabel(struct disklabel *dl, struct rdgeom *g) 820 { 821 int n, p = 0; 822 823 dl->d_bbsize = BBSIZE; 824 dl->d_sbsize = SBSIZE; 825 dl->d_typename[p++] = MSCP_MID_CHAR(2, g->media_id); 826 dl->d_typename[p++] = MSCP_MID_CHAR(1, g->media_id); 827 if (MSCP_MID_ECH(0, g->media_id)) 828 dl->d_typename[p++] = MSCP_MID_CHAR(0, g->media_id); 829 n = MSCP_MID_NUM(g->media_id); 830 if (n > 99) { 831 dl->d_typename[p++] = '1'; 832 n -= 100; 833 } 834 if (n > 9) { 835 dl->d_typename[p++] = (n / 10) + '0'; 836 n %= 10; 837 } 838 dl->d_typename[p++] = n + '0'; 839 dl->d_typename[p] = 0; 840 dl->d_type = DTYPE_MSCP; /* XXX - what to use here??? */ 841 dl->d_rpm = 3600; 842 dl->d_secsize = DEV_BSIZE; 843 844 dl->d_secperunit = g->lbn_count; 845 dl->d_nsectors = g->nspt; 846 dl->d_ntracks = g->ntracks; 847 dl->d_secpercyl = dl->d_nsectors * dl->d_ntracks; 848 dl->d_ncylinders = dl->d_secperunit / dl->d_secpercyl; 849 850 dl->d_npartitions = MAXPARTITIONS; 851 dl->d_partitions[0].p_size = dl->d_partitions[2].p_size = 852 dl->d_secperunit; 853 dl->d_partitions[0].p_offset = dl->d_partitions[2].p_offset = 0; 854 dl->d_interleave = dl->d_headswitch = 1; 855 dl->d_magic = dl->d_magic2 = DISKMAGIC; 856 dl->d_checksum = dkcksum(dl); 857 } 858
Indexes created Wed Oct 01 07:09:59 GMT 2025