fd.c revision 1.98
1 /* $NetBSD: fd.c,v 1.98 2002/12/10 12:11:21 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 41 * Copyright (c) 1995 Paul Kranenburg. 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Don Ahn. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)fd.c 7.4 (Berkeley) 5/25/91 77 */ 78 79 #include "opt_ddb.h" 80 #include "opt_md.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/callout.h> 85 #include <sys/kernel.h> 86 #include <sys/file.h> 87 #include <sys/ioctl.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/dkstat.h> 91 #include <sys/disk.h> 92 #include <sys/fdio.h> 93 #include <sys/buf.h> 94 #include <sys/malloc.h> 95 #include <sys/proc.h> 96 #include <sys/uio.h> 97 #include <sys/stat.h> 98 #include <sys/syslog.h> 99 #include <sys/queue.h> 100 #include <sys/conf.h> 101 102 #include <dev/cons.h> 103 104 #include <uvm/uvm_extern.h> 105 106 #include <machine/autoconf.h> 107 #include <machine/intr.h> 108 109 #include <sparc/sparc/auxreg.h> 110 #include <sparc/dev/fdreg.h> 111 #include <sparc/dev/fdvar.h> 112 113 #define FDUNIT(dev) (minor(dev) / 8) 114 #define FDTYPE(dev) (minor(dev) % 8) 115 116 /* XXX misuse a flag to identify format operation */ 117 #define B_FORMAT B_XXX 118 119 #define FD_DEBUG 120 #ifdef FD_DEBUG 121 int fdc_debug = 0; 122 #endif 123 124 enum fdc_state { 125 DEVIDLE = 0, 126 MOTORWAIT, /* 1 */ 127 DOSEEK, /* 2 */ 128 SEEKWAIT, /* 3 */ 129 SEEKTIMEDOUT, /* 4 */ 130 SEEKCOMPLETE, /* 5 */ 131 DOIO, /* 6 */ 132 IOCOMPLETE, /* 7 */ 133 IOTIMEDOUT, /* 8 */ 134 IOCLEANUPWAIT, /* 9 */ 135 IOCLEANUPTIMEDOUT,/*10 */ 136 DORESET, /* 11 */ 137 RESETCOMPLETE, /* 12 */ 138 RESETTIMEDOUT, /* 13 */ 139 DORECAL, /* 14 */ 140 RECALWAIT, /* 15 */ 141 RECALTIMEDOUT, /* 16 */ 142 RECALCOMPLETE, /* 17 */ 143 }; 144 145 /* software state, per controller */ 146 struct fdc_softc { 147 struct device sc_dev; /* boilerplate */ 148 bus_space_tag_t sc_bustag; 149 150 struct callout sc_timo_ch; /* timeout callout */ 151 struct callout sc_intr_ch; /* pseudo-intr callout */ 152 153 struct fd_softc *sc_fd[4]; /* pointers to children */ 154 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 155 enum fdc_state sc_state; 156 int sc_flags; 157 #define FDC_82077 0x01 158 #define FDC_NEEDHEADSETTLE 0x02 159 #define FDC_EIS 0x04 160 #define FDC_NEEDMOTORWAIT 0x08 161 int sc_errors; /* number of retries so far */ 162 int sc_overruns; /* number of DMA overruns */ 163 int sc_cfg; /* current configuration */ 164 struct fdcio sc_io; 165 #define sc_handle sc_io.fdcio_handle 166 #define sc_reg_msr sc_io.fdcio_reg_msr 167 #define sc_reg_fifo sc_io.fdcio_reg_fifo 168 #define sc_reg_dor sc_io.fdcio_reg_dor 169 #define sc_reg_drs sc_io.fdcio_reg_msr 170 #define sc_itask sc_io.fdcio_itask 171 #define sc_istatus sc_io.fdcio_istatus 172 #define sc_data sc_io.fdcio_data 173 #define sc_tc sc_io.fdcio_tc 174 #define sc_nstat sc_io.fdcio_nstat 175 #define sc_status sc_io.fdcio_status 176 #define sc_intrcnt sc_io.fdcio_intrcnt 177 178 void *sc_sicookie; /* softintr(9) cookie */ 179 }; 180 181 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 182 183 /* controller driver configuration */ 184 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 185 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 186 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 187 void fdcattach_obio __P((struct device *, struct device *, void *)); 188 189 int fdcattach __P((struct fdc_softc *, int)); 190 191 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 192 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 193 194 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 195 fdcmatch_obio, fdcattach_obio, NULL, NULL); 196 197 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 198 199 /* 200 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 201 * we tell them apart. 202 */ 203 struct fd_type { 204 int sectrac; /* sectors per track */ 205 int heads; /* number of heads */ 206 int seccyl; /* sectors per cylinder */ 207 int secsize; /* size code for sectors */ 208 int datalen; /* data len when secsize = 0 */ 209 int steprate; /* step rate and head unload time */ 210 int gap1; /* gap len between sectors */ 211 int gap2; /* formatting gap */ 212 int cylinders; /* total num of cylinders */ 213 int size; /* size of disk in sectors */ 214 int step; /* steps per cylinder */ 215 int rate; /* transfer speed code */ 216 int fillbyte; /* format fill byte */ 217 int interleave; /* interleave factor (formatting) */ 218 char *name; 219 }; 220 221 /* The order of entries in the following table is important -- BEWARE! */ 222 struct fd_type fd_types[] = { 223 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 224 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 226 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 227 }; 228 229 /* software state, per disk (with up to 4 disks per ctlr) */ 230 struct fd_softc { 231 struct device sc_dv; /* generic device info */ 232 struct disk sc_dk; /* generic disk info */ 233 234 struct fd_type *sc_deftype; /* default type descriptor */ 235 struct fd_type *sc_type; /* current type descriptor */ 236 237 struct callout sc_motoron_ch; 238 struct callout sc_motoroff_ch; 239 240 daddr_t sc_blkno; /* starting block number */ 241 int sc_bcount; /* byte count left */ 242 int sc_skip; /* bytes already transferred */ 243 int sc_nblks; /* number of blocks currently transferring */ 244 int sc_nbytes; /* number of bytes currently transferring */ 245 246 int sc_drive; /* physical unit number */ 247 int sc_flags; 248 #define FD_OPEN 0x01 /* it's open */ 249 #define FD_MOTOR 0x02 /* motor should be on */ 250 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 251 int sc_cylin; /* where we think the head is */ 252 int sc_opts; /* user-set options */ 253 254 void *sc_sdhook; /* shutdownhook cookie */ 255 256 TAILQ_ENTRY(fd_softc) sc_drivechain; 257 int sc_ops; /* I/O ops since last switch */ 258 struct bufq_state sc_q; /* pending I/O requests */ 259 int sc_active; /* number of active I/O requests */ 260 }; 261 262 /* floppy driver configuration */ 263 int fdmatch __P((struct device *, struct cfdata *, void *)); 264 void fdattach __P((struct device *, struct device *, void *)); 265 266 CFATTACH_DECL(fd, sizeof(struct fd_softc), 267 fdmatch, fdattach, NULL, NULL); 268 269 extern struct cfdriver fd_cd; 270 271 dev_type_open(fdopen); 272 dev_type_close(fdclose); 273 dev_type_read(fdread); 274 dev_type_write(fdwrite); 275 dev_type_ioctl(fdioctl); 276 dev_type_strategy(fdstrategy); 277 278 const struct bdevsw fd_bdevsw = { 279 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 280 }; 281 282 const struct cdevsw fd_cdevsw = { 283 fdopen, fdclose, fdread, fdwrite, fdioctl, 284 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 285 }; 286 287 void fdgetdisklabel __P((dev_t)); 288 int fd_get_parms __P((struct fd_softc *)); 289 void fdstart __P((struct fd_softc *)); 290 int fdprint __P((void *, const char *)); 291 292 struct dkdriver fddkdriver = { fdstrategy }; 293 294 struct fd_type *fd_nvtotype __P((char *, int, int)); 295 void fd_set_motor __P((struct fdc_softc *fdc)); 296 void fd_motor_off __P((void *arg)); 297 void fd_motor_on __P((void *arg)); 298 int fdcresult __P((struct fdc_softc *fdc)); 299 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 300 void fdcstart __P((struct fdc_softc *fdc)); 301 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 302 void fdc_reset __P((struct fdc_softc *fdc)); 303 void fdctimeout __P((void *arg)); 304 void fdcpseudointr __P((void *arg)); 305 int fdc_c_hwintr __P((void *)); 306 void fdchwintr __P((void)); 307 void fdcswintr __P((void *)); 308 int fdcstate __P((struct fdc_softc *)); 309 void fdcretry __P((struct fdc_softc *fdc)); 310 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 311 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 312 void fd_do_eject __P((struct fd_softc *)); 313 void fd_mountroot_hook __P((struct device *)); 314 static int fdconf __P((struct fdc_softc *)); 315 static void establish_chip_type __P(( 316 struct fdc_softc *, 317 bus_space_tag_t, 318 bus_addr_t, 319 bus_size_t, 320 bus_space_handle_t)); 321 322 323 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 324 325 int 326 fdcmatch_mainbus(parent, match, aux) 327 struct device *parent; 328 struct cfdata *match; 329 void *aux; 330 { 331 struct mainbus_attach_args *ma = aux; 332 333 /* 334 * Floppy controller is on mainbus on sun4c. 335 */ 336 if (!CPU_ISSUN4C) 337 return (0); 338 339 /* sun4c PROMs call the controller "fd" */ 340 if (strcmp("fd", ma->ma_name) != 0) 341 return (0); 342 343 return (bus_space_probe(ma->ma_bustag, 344 ma->ma_paddr, 345 1, /* probe size */ 346 0, /* offset */ 347 0, /* flags */ 348 NULL, NULL)); 349 } 350 351 int 352 fdcmatch_obio(parent, match, aux) 353 struct device *parent; 354 struct cfdata *match; 355 void *aux; 356 { 357 union obio_attach_args *uoba = aux; 358 struct sbus_attach_args *sa; 359 360 /* 361 * Floppy controller is on obio on sun4m. 362 */ 363 if (uoba->uoba_isobio4 != 0) 364 return (0); 365 366 sa = &uoba->uoba_sbus; 367 368 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 369 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 370 return (0); 371 372 return (bus_space_probe(sa->sa_bustag, 373 sbus_bus_addr(sa->sa_bustag, 374 sa->sa_slot, sa->sa_offset), 375 1, /* probe size */ 376 0, /* offset */ 377 0, /* flags */ 378 NULL, NULL)); 379 } 380 381 static void 382 establish_chip_type(fdc, tag, addr, size, handle) 383 struct fdc_softc *fdc; 384 bus_space_tag_t tag; 385 bus_addr_t addr; 386 bus_size_t size; 387 bus_space_handle_t handle; 388 { 389 u_int8_t v; 390 391 /* 392 * This hack from Chris Torek: apparently DOR really 393 * addresses MSR/DRS on a 82072. 394 * We used to rely on the VERSION command to tell the 395 * difference (which did not work). 396 */ 397 398 /* First, check the size of the register bank */ 399 if (size < 8) 400 /* It isn't a 82077 */ 401 return; 402 403 /* Then probe the DOR register offset */ 404 if (bus_space_probe(tag, addr, 405 1, /* probe size */ 406 FDREG77_DOR, /* offset */ 407 0, /* flags */ 408 NULL, NULL) == 0) { 409 410 /* It isn't a 82077 */ 411 return; 412 } 413 414 v = bus_space_read_1(tag, handle, FDREG77_DOR); 415 if (v == NE7_RQM) { 416 /* 417 * Value in DOR looks like it's really MSR 418 */ 419 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 420 v = bus_space_read_1(tag, handle, FDREG77_DOR); 421 if (v == NE7_RQM) { 422 /* 423 * The value in the DOR didn't stick; 424 * it isn't a 82077 425 */ 426 return; 427 } 428 } 429 430 fdc->sc_flags |= FDC_82077; 431 } 432 433 /* 434 * Arguments passed between fdcattach and fdprobe. 435 */ 436 struct fdc_attach_args { 437 int fa_drive; 438 struct fd_type *fa_deftype; 439 }; 440 441 /* 442 * Print the location of a disk drive (called just before attaching the 443 * the drive). If `fdc' is not NULL, the drive was found but was not 444 * in the system config file; print the drive name as well. 445 * Return QUIET (config_find ignores this if the device was configured) to 446 * avoid printing `fdN not configured' messages. 447 */ 448 int 449 fdprint(aux, fdc) 450 void *aux; 451 const char *fdc; 452 { 453 register struct fdc_attach_args *fa = aux; 454 455 if (!fdc) 456 printf(" drive %d", fa->fa_drive); 457 return (QUIET); 458 } 459 460 /* 461 * Configure several parameters and features on the FDC. 462 * Return 0 on success. 463 */ 464 static int 465 fdconf(fdc) 466 struct fdc_softc *fdc; 467 { 468 int vroom; 469 470 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 471 return (-1); 472 473 /* 474 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 475 * the PROM thinks is appropriate. 476 */ 477 if ((vroom = fdc->sc_status[7]) == 0) 478 vroom = 0x64; 479 480 /* Configure controller to use FIFO and Implied Seek */ 481 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 482 return (-1); 483 if (fdc_wrfifo(fdc, vroom) != 0) 484 return (-1); 485 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 486 return (-1); 487 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 488 return (-1); 489 /* No result phase for the NE7CMD_CFG command */ 490 491 if ((fdc->sc_flags & FDC_82077) != 0) { 492 /* Lock configuration across soft resets. */ 493 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 494 fdcresult(fdc) != 1) { 495 #ifdef DEBUG 496 printf("fdconf: CFGLOCK failed"); 497 #endif 498 return (-1); 499 } 500 } 501 502 return (0); 503 #if 0 504 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 505 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 506 if (fdc_debug) 507 printf("[version cmd]"); 508 } 509 #endif 510 } 511 512 void 513 fdcattach_mainbus(parent, self, aux) 514 struct device *parent, *self; 515 void *aux; 516 { 517 struct fdc_softc *fdc = (void *)self; 518 struct mainbus_attach_args *ma = aux; 519 520 fdc->sc_bustag = ma->ma_bustag; 521 522 if (bus_space_map( 523 ma->ma_bustag, 524 ma->ma_paddr, 525 ma->ma_size, 526 BUS_SPACE_MAP_LINEAR, 527 &fdc->sc_handle) != 0) { 528 printf("%s: cannot map registers\n", self->dv_xname); 529 return; 530 } 531 532 establish_chip_type(fdc, 533 ma->ma_bustag, 534 ma->ma_paddr, 535 ma->ma_size, 536 fdc->sc_handle); 537 538 if (fdcattach(fdc, ma->ma_pri) != 0) 539 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 540 } 541 542 void 543 fdcattach_obio(parent, self, aux) 544 struct device *parent, *self; 545 void *aux; 546 { 547 struct fdc_softc *fdc = (void *)self; 548 union obio_attach_args *uoba = aux; 549 struct sbus_attach_args *sa = &uoba->uoba_sbus; 550 551 if (sa->sa_nintr == 0) { 552 printf(": no interrupt line configured\n"); 553 return; 554 } 555 556 fdc->sc_bustag = sa->sa_bustag; 557 558 if (sbus_bus_map(sa->sa_bustag, 559 sa->sa_slot, sa->sa_offset, sa->sa_size, 560 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 561 printf("%s: cannot map control registers\n", 562 self->dv_xname); 563 return; 564 } 565 566 establish_chip_type(fdc, 567 sa->sa_bustag, 568 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 569 sa->sa_size, 570 fdc->sc_handle); 571 572 if (strcmp(PROM_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 573 printf(": no drives attached\n"); 574 return; 575 } 576 577 if (fdcattach(fdc, sa->sa_pri) != 0) 578 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 579 } 580 581 int 582 fdcattach(fdc, pri) 583 struct fdc_softc *fdc; 584 int pri; 585 { 586 struct fdc_attach_args fa; 587 int drive_attached; 588 char code; 589 590 callout_init(&fdc->sc_timo_ch); 591 callout_init(&fdc->sc_intr_ch); 592 593 fdc->sc_state = DEVIDLE; 594 fdc->sc_itask = FDC_ITASK_NONE; 595 fdc->sc_istatus = FDC_ISTATUS_NONE; 596 fdc->sc_flags |= FDC_EIS; 597 TAILQ_INIT(&fdc->sc_drives); 598 599 if ((fdc->sc_flags & FDC_82077) != 0) { 600 fdc->sc_reg_msr = FDREG77_MSR; 601 fdc->sc_reg_fifo = FDREG77_FIFO; 602 fdc->sc_reg_dor = FDREG77_DOR; 603 code = '7'; 604 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 605 } else { 606 fdc->sc_reg_msr = FDREG72_MSR; 607 fdc->sc_reg_fifo = FDREG72_FIFO; 608 fdc->sc_reg_dor = 0; 609 code = '2'; 610 } 611 612 /* 613 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 614 * Note: CFG_EFIFO is active-low, initial threshold value: 8 615 */ 616 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 617 if (fdconf(fdc) != 0) { 618 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 619 return (-1); 620 } 621 622 fdciop = &fdc->sc_io; 623 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 0, 624 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 625 printf("\n%s: cannot register interrupt handler\n", 626 fdc->sc_dev.dv_xname); 627 return (-1); 628 } 629 630 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 631 if (fdc->sc_sicookie == NULL) { 632 printf("\n%s: cannot register soft interrupt handler\n", 633 fdc->sc_dev.dv_xname); 634 return (-1); 635 } 636 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 637 638 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 639 fdc->sc_dev.dv_xname, "intr"); 640 641 /* physical limit: four drives per controller. */ 642 drive_attached = 0; 643 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 644 fa.fa_deftype = NULL; /* unknown */ 645 fa.fa_deftype = &fd_types[0]; /* XXX */ 646 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 647 drive_attached = 1; 648 } 649 650 if (drive_attached == 0) { 651 /* XXX - dis-establish interrupts here */ 652 /* return (-1); */ 653 } 654 655 return (0); 656 } 657 658 int 659 fdmatch(parent, match, aux) 660 struct device *parent; 661 struct cfdata *match; 662 void *aux; 663 { 664 struct fdc_softc *fdc = (void *)parent; 665 bus_space_tag_t t = fdc->sc_bustag; 666 bus_space_handle_t h = fdc->sc_handle; 667 struct fdc_attach_args *fa = aux; 668 int drive = fa->fa_drive; 669 int n, ok; 670 671 if (drive > 0) 672 /* XXX - for now, punt on more than one drive */ 673 return (0); 674 675 if ((fdc->sc_flags & FDC_82077) != 0) { 676 /* select drive and turn on motor */ 677 bus_space_write_1(t, h, fdc->sc_reg_dor, 678 drive | FDO_FRST | FDO_MOEN(drive)); 679 /* wait for motor to spin up */ 680 delay(250000); 681 } else { 682 auxregbisc(AUXIO4C_FDS, 0); 683 } 684 fdc->sc_nstat = 0; 685 fdc_wrfifo(fdc, NE7CMD_RECAL); 686 fdc_wrfifo(fdc, drive); 687 688 /* Wait for recalibration to complete */ 689 for (n = 0; n < 10000; n++) { 690 u_int8_t v; 691 692 delay(1000); 693 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 694 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 695 /* wait a bit longer till device *really* is ready */ 696 delay(100000); 697 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 698 break; 699 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 700 /* 701 * Got `invalid command'; we interpret it 702 * to mean that the re-calibrate hasn't in 703 * fact finished yet 704 */ 705 continue; 706 break; 707 } 708 } 709 n = fdc->sc_nstat; 710 #ifdef FD_DEBUG 711 if (fdc_debug) { 712 int i; 713 printf("fdprobe: %d stati:", n); 714 for (i = 0; i < n; i++) 715 printf(" 0x%x", fdc->sc_status[i]); 716 printf("\n"); 717 } 718 #endif 719 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 720 721 /* turn off motor */ 722 if ((fdc->sc_flags & FDC_82077) != 0) { 723 /* deselect drive and turn motor off */ 724 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 725 } else { 726 auxregbisc(0, AUXIO4C_FDS); 727 } 728 729 return (ok); 730 } 731 732 /* 733 * Controller is working, and drive responded. Attach it. 734 */ 735 void 736 fdattach(parent, self, aux) 737 struct device *parent, *self; 738 void *aux; 739 { 740 struct fdc_softc *fdc = (void *)parent; 741 struct fd_softc *fd = (void *)self; 742 struct fdc_attach_args *fa = aux; 743 struct fd_type *type = fa->fa_deftype; 744 int drive = fa->fa_drive; 745 746 callout_init(&fd->sc_motoron_ch); 747 callout_init(&fd->sc_motoroff_ch); 748 749 /* XXX Allow `flags' to override device type? */ 750 751 if (type) 752 printf(": %s %d cyl, %d head, %d sec\n", type->name, 753 type->cylinders, type->heads, type->sectrac); 754 else 755 printf(": density unknown\n"); 756 757 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 758 fd->sc_cylin = -1; 759 fd->sc_drive = drive; 760 fd->sc_deftype = type; 761 fdc->sc_fd[drive] = fd; 762 763 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 764 fdc_wrfifo(fdc, type->steprate); 765 /* XXX head load time == 6ms */ 766 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 767 768 /* 769 * Initialize and attach the disk structure. 770 */ 771 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 772 fd->sc_dk.dk_driver = &fddkdriver; 773 disk_attach(&fd->sc_dk); 774 775 /* 776 * Establish a mountroot_hook anyway in case we booted 777 * with RB_ASKNAME and get selected as the boot device. 778 */ 779 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 780 781 /* Make sure the drive motor gets turned off at shutdown time. */ 782 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 783 } 784 785 __inline struct fd_type * 786 fd_dev_to_type(fd, dev) 787 struct fd_softc *fd; 788 dev_t dev; 789 { 790 int type = FDTYPE(dev); 791 792 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 793 return (NULL); 794 return (type ? &fd_types[type - 1] : fd->sc_deftype); 795 } 796 797 void 798 fdstrategy(bp) 799 register struct buf *bp; /* IO operation to perform */ 800 { 801 struct fd_softc *fd; 802 int unit = FDUNIT(bp->b_dev); 803 int sz; 804 int s; 805 806 /* Valid unit, controller, and request? */ 807 if (unit >= fd_cd.cd_ndevs || 808 (fd = fd_cd.cd_devs[unit]) == 0 || 809 bp->b_blkno < 0 || 810 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 811 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 812 (bp->b_flags & B_FORMAT) == 0)) { 813 bp->b_error = EINVAL; 814 goto bad; 815 } 816 817 /* If it's a null transfer, return immediately. */ 818 if (bp->b_bcount == 0) 819 goto done; 820 821 sz = howmany(bp->b_bcount, DEV_BSIZE); 822 823 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 824 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 825 - bp->b_blkno; 826 if (sz == 0) { 827 /* If exactly at end of disk, return EOF. */ 828 bp->b_resid = bp->b_bcount; 829 goto done; 830 } 831 if (sz < 0) { 832 /* If past end of disk, return EINVAL. */ 833 bp->b_error = EINVAL; 834 goto bad; 835 } 836 /* Otherwise, truncate request. */ 837 bp->b_bcount = sz << DEV_BSHIFT; 838 } 839 840 bp->b_rawblkno = bp->b_blkno; 841 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 842 (FD_BSIZE(fd) * fd->sc_type->seccyl); 843 844 #ifdef FD_DEBUG 845 if (fdc_debug > 1) 846 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 847 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 848 #endif 849 850 /* Queue transfer on drive, activate drive and controller if idle. */ 851 s = splbio(); 852 BUFQ_PUT(&fd->sc_q, bp); 853 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 854 if (fd->sc_active == 0) 855 fdstart(fd); 856 #ifdef DIAGNOSTIC 857 else { 858 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 859 if (fdc->sc_state == DEVIDLE) { 860 printf("fdstrategy: controller inactive\n"); 861 fdcstart(fdc); 862 } 863 } 864 #endif 865 splx(s); 866 return; 867 868 bad: 869 bp->b_flags |= B_ERROR; 870 done: 871 /* Toss transfer; we're done early. */ 872 biodone(bp); 873 } 874 875 void 876 fdstart(fd) 877 struct fd_softc *fd; 878 { 879 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 880 int active = fdc->sc_drives.tqh_first != 0; 881 882 /* Link into controller queue. */ 883 fd->sc_active = 1; 884 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 885 886 /* If controller not already active, start it. */ 887 if (!active) 888 fdcstart(fdc); 889 } 890 891 void 892 fdfinish(fd, bp) 893 struct fd_softc *fd; 894 struct buf *bp; 895 { 896 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 897 898 /* 899 * Move this drive to the end of the queue to give others a `fair' 900 * chance. We only force a switch if N operations are completed while 901 * another drive is waiting to be serviced, since there is a long motor 902 * startup delay whenever we switch. 903 */ 904 (void)BUFQ_GET(&fd->sc_q); 905 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 906 fd->sc_ops = 0; 907 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 908 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 909 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 910 } else 911 fd->sc_active = 0; 912 } 913 bp->b_resid = fd->sc_bcount; 914 fd->sc_skip = 0; 915 916 biodone(bp); 917 /* turn off motor 5s from now */ 918 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 919 fdc->sc_state = DEVIDLE; 920 } 921 922 void 923 fdc_reset(fdc) 924 struct fdc_softc *fdc; 925 { 926 bus_space_tag_t t = fdc->sc_bustag; 927 bus_space_handle_t h = fdc->sc_handle; 928 929 if ((fdc->sc_flags & FDC_82077) != 0) { 930 bus_space_write_1(t, h, fdc->sc_reg_dor, 931 FDO_FDMAEN | FDO_MOEN(0)); 932 } 933 934 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 935 delay(10); 936 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 937 938 if ((fdc->sc_flags & FDC_82077) != 0) { 939 bus_space_write_1(t, h, fdc->sc_reg_dor, 940 FDO_FRST | FDO_FDMAEN | FDO_DS); 941 } 942 #ifdef FD_DEBUG 943 if (fdc_debug) 944 printf("fdc reset\n"); 945 #endif 946 } 947 948 void 949 fd_set_motor(fdc) 950 struct fdc_softc *fdc; 951 { 952 struct fd_softc *fd; 953 u_char status; 954 int n; 955 956 if ((fdc->sc_flags & FDC_82077) != 0) { 957 status = FDO_FRST | FDO_FDMAEN; 958 if ((fd = fdc->sc_drives.tqh_first) != NULL) 959 status |= fd->sc_drive; 960 961 for (n = 0; n < 4; n++) 962 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 963 status |= FDO_MOEN(n); 964 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 965 fdc->sc_reg_dor, status); 966 } else { 967 968 for (n = 0; n < 4; n++) { 969 if ((fd = fdc->sc_fd[n]) != NULL && 970 (fd->sc_flags & FD_MOTOR) != 0) { 971 auxregbisc(AUXIO4C_FDS, 0); 972 return; 973 } 974 } 975 auxregbisc(0, AUXIO4C_FDS); 976 } 977 } 978 979 void 980 fd_motor_off(arg) 981 void *arg; 982 { 983 struct fd_softc *fd = arg; 984 int s; 985 986 s = splbio(); 987 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 988 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 989 splx(s); 990 } 991 992 void 993 fd_motor_on(arg) 994 void *arg; 995 { 996 struct fd_softc *fd = arg; 997 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 998 int s; 999 1000 s = splbio(); 1001 fd->sc_flags &= ~FD_MOTOR_WAIT; 1002 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1003 (void) fdcstate(fdc); 1004 splx(s); 1005 } 1006 1007 /* 1008 * Get status bytes off the FDC after a command has finished 1009 * Returns the number of status bytes read; -1 on error. 1010 * The return value is also stored in `sc_nstat'. 1011 */ 1012 int 1013 fdcresult(fdc) 1014 struct fdc_softc *fdc; 1015 { 1016 bus_space_tag_t t = fdc->sc_bustag; 1017 bus_space_handle_t h = fdc->sc_handle; 1018 int j, n = 0; 1019 1020 for (j = 10000; j; j--) { 1021 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1022 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1023 if (v == NE7_RQM) 1024 return (fdc->sc_nstat = n); 1025 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1026 if (n >= sizeof(fdc->sc_status)) { 1027 log(LOG_ERR, "fdcresult: overrun\n"); 1028 return (-1); 1029 } 1030 fdc->sc_status[n++] = 1031 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1032 } else 1033 delay(1); 1034 } 1035 1036 log(LOG_ERR, "fdcresult: timeout\n"); 1037 return (fdc->sc_nstat = -1); 1038 } 1039 1040 /* 1041 * Write a command byte to the FDC. 1042 * Returns 0 on success; -1 on failure (i.e. timeout) 1043 */ 1044 int 1045 fdc_wrfifo(fdc, x) 1046 struct fdc_softc *fdc; 1047 u_int8_t x; 1048 { 1049 bus_space_tag_t t = fdc->sc_bustag; 1050 bus_space_handle_t h = fdc->sc_handle; 1051 int i; 1052 1053 for (i = 100000; i-- > 0;) { 1054 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1055 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1056 /* The chip is ready */ 1057 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1058 return (0); 1059 } 1060 delay(1); 1061 } 1062 return (-1); 1063 } 1064 1065 int 1066 fdopen(dev, flags, fmt, p) 1067 dev_t dev; 1068 int flags, fmt; 1069 struct proc *p; 1070 { 1071 int unit, pmask; 1072 struct fd_softc *fd; 1073 struct fd_type *type; 1074 1075 unit = FDUNIT(dev); 1076 if (unit >= fd_cd.cd_ndevs) 1077 return (ENXIO); 1078 fd = fd_cd.cd_devs[unit]; 1079 if (fd == NULL) 1080 return (ENXIO); 1081 type = fd_dev_to_type(fd, dev); 1082 if (type == NULL) 1083 return (ENXIO); 1084 1085 if ((fd->sc_flags & FD_OPEN) != 0 && 1086 fd->sc_type != type) 1087 return (EBUSY); 1088 1089 fd->sc_type = type; 1090 fd->sc_cylin = -1; 1091 fd->sc_flags |= FD_OPEN; 1092 1093 /* 1094 * Only update the disklabel if we're not open anywhere else. 1095 */ 1096 if (fd->sc_dk.dk_openmask == 0) 1097 fdgetdisklabel(dev); 1098 1099 pmask = (1 << DISKPART(dev)); 1100 1101 switch (fmt) { 1102 case S_IFCHR: 1103 fd->sc_dk.dk_copenmask |= pmask; 1104 break; 1105 1106 case S_IFBLK: 1107 fd->sc_dk.dk_bopenmask |= pmask; 1108 break; 1109 } 1110 fd->sc_dk.dk_openmask = 1111 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1112 1113 return (0); 1114 } 1115 1116 int 1117 fdclose(dev, flags, fmt, p) 1118 dev_t dev; 1119 int flags, fmt; 1120 struct proc *p; 1121 { 1122 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1123 int pmask = (1 << DISKPART(dev)); 1124 1125 fd->sc_flags &= ~FD_OPEN; 1126 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1127 1128 switch (fmt) { 1129 case S_IFCHR: 1130 fd->sc_dk.dk_copenmask &= ~pmask; 1131 break; 1132 1133 case S_IFBLK: 1134 fd->sc_dk.dk_bopenmask &= ~pmask; 1135 break; 1136 } 1137 fd->sc_dk.dk_openmask = 1138 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1139 1140 return (0); 1141 } 1142 1143 int 1144 fdread(dev, uio, flag) 1145 dev_t dev; 1146 struct uio *uio; 1147 int flag; 1148 { 1149 1150 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1151 } 1152 1153 int 1154 fdwrite(dev, uio, flag) 1155 dev_t dev; 1156 struct uio *uio; 1157 int flag; 1158 { 1159 1160 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1161 } 1162 1163 void 1164 fdcstart(fdc) 1165 struct fdc_softc *fdc; 1166 { 1167 1168 #ifdef DIAGNOSTIC 1169 /* only got here if controller's drive queue was inactive; should 1170 be in idle state */ 1171 if (fdc->sc_state != DEVIDLE) { 1172 printf("fdcstart: not idle\n"); 1173 return; 1174 } 1175 #endif 1176 (void) fdcstate(fdc); 1177 } 1178 1179 void 1180 fdcstatus(fdc, s) 1181 struct fdc_softc *fdc; 1182 char *s; 1183 { 1184 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1185 int n; 1186 char bits[64]; 1187 1188 /* Just print last status */ 1189 n = fdc->sc_nstat; 1190 1191 #if 0 1192 /* 1193 * A 82072 seems to return <invalid command> on 1194 * gratuitous Sense Interrupt commands. 1195 */ 1196 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1197 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1198 (void) fdcresult(fdc); 1199 n = 2; 1200 } 1201 #endif 1202 1203 printf("%s: %s: state %d", 1204 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1205 1206 switch (n) { 1207 case 0: 1208 printf("\n"); 1209 break; 1210 case 2: 1211 printf(" (st0 %s cyl %d)\n", 1212 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1213 bits, sizeof(bits)), fdc->sc_status[1]); 1214 break; 1215 case 7: 1216 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1217 NE7_ST0BITS, bits, sizeof(bits))); 1218 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1219 NE7_ST1BITS, bits, sizeof(bits))); 1220 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1221 NE7_ST2BITS, bits, sizeof(bits))); 1222 printf(" cyl %d head %d sec %d)\n", 1223 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1224 break; 1225 #ifdef DIAGNOSTIC 1226 default: 1227 printf(" fdcstatus: weird size: %d\n", n); 1228 break; 1229 #endif 1230 } 1231 } 1232 1233 void 1234 fdctimeout(arg) 1235 void *arg; 1236 { 1237 struct fdc_softc *fdc = arg; 1238 struct fd_softc *fd; 1239 int s; 1240 1241 s = splbio(); 1242 fd = fdc->sc_drives.tqh_first; 1243 if (fd == NULL) { 1244 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1245 fdc->sc_dev.dv_xname, 1246 fdc->sc_state, fdc->sc_istatus); 1247 fdc->sc_state = DEVIDLE; 1248 goto out; 1249 } 1250 1251 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1252 fdc->sc_state++; 1253 else 1254 fdc->sc_state = DEVIDLE; 1255 1256 (void) fdcstate(fdc); 1257 out: 1258 splx(s); 1259 1260 } 1261 1262 void 1263 fdcpseudointr(arg) 1264 void *arg; 1265 { 1266 struct fdc_softc *fdc = arg; 1267 int s; 1268 1269 /* Just ensure it has the right spl. */ 1270 s = splbio(); 1271 (void) fdcstate(fdc); 1272 splx(s); 1273 } 1274 1275 1276 /* 1277 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1278 * handler is available. Unfortunately, we have no reliable way to 1279 * determine that the interrupt really came from the floppy controller; 1280 * just hope that the other devices that share this interrupt level 1281 * can do better.. 1282 */ 1283 int 1284 fdc_c_hwintr(arg) 1285 void *arg; 1286 { 1287 struct fdc_softc *fdc = arg; 1288 bus_space_tag_t t = fdc->sc_bustag; 1289 bus_space_handle_t h = fdc->sc_handle; 1290 1291 switch (fdc->sc_itask) { 1292 case FDC_ITASK_NONE: 1293 return (0); 1294 case FDC_ITASK_SENSEI: 1295 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1296 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1297 else 1298 fdc->sc_istatus = FDC_ISTATUS_DONE; 1299 softintr_schedule(fdc->sc_sicookie); 1300 return (1); 1301 case FDC_ITASK_RESULT: 1302 if (fdcresult(fdc) == -1) 1303 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1304 else 1305 fdc->sc_istatus = FDC_ISTATUS_DONE; 1306 softintr_schedule(fdc->sc_sicookie); 1307 return (1); 1308 case FDC_ITASK_DMA: 1309 /* Proceed with pseudo-dma below */ 1310 break; 1311 default: 1312 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1313 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1314 softintr_schedule(fdc->sc_sicookie); 1315 return (1); 1316 } 1317 1318 /* 1319 * Pseudo DMA in progress 1320 */ 1321 for (;;) { 1322 u_int8_t msr; 1323 1324 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1325 1326 if ((msr & NE7_RQM) == 0) 1327 /* That's all this round */ 1328 break; 1329 1330 if ((msr & NE7_NDM) == 0) { 1331 fdcresult(fdc); 1332 fdc->sc_istatus = FDC_ISTATUS_DONE; 1333 softintr_schedule(fdc->sc_sicookie); 1334 #ifdef FD_DEBUG 1335 if (fdc_debug > 1) 1336 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1337 #endif 1338 break; 1339 } 1340 1341 /* Another byte can be transferred */ 1342 if ((msr & NE7_DIO) != 0) 1343 *fdc->sc_data = 1344 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1345 else 1346 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1347 *fdc->sc_data); 1348 1349 fdc->sc_data++; 1350 if (--fdc->sc_tc == 0) { 1351 fdc->sc_istatus = FDC_ISTATUS_DONE; 1352 FTC_FLIP; 1353 fdcresult(fdc); 1354 softintr_schedule(fdc->sc_sicookie); 1355 break; 1356 } 1357 } 1358 return (1); 1359 } 1360 1361 void 1362 fdcswintr(arg) 1363 void *arg; 1364 { 1365 struct fdc_softc *fdc = arg; 1366 int s; 1367 1368 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1369 /* This (software) interrupt is not for us */ 1370 return; 1371 1372 switch (fdc->sc_istatus) { 1373 case FDC_ISTATUS_ERROR: 1374 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1375 break; 1376 case FDC_ISTATUS_SPURIOUS: 1377 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1378 break; 1379 } 1380 1381 fdcstate(fdc); 1382 return; 1383 } 1384 1385 int 1386 fdcstate(fdc) 1387 struct fdc_softc *fdc; 1388 { 1389 #define st0 fdc->sc_status[0] 1390 #define st1 fdc->sc_status[1] 1391 #define cyl fdc->sc_status[1] 1392 #define FDC_WRFIFO(fdc, c) do { \ 1393 if (fdc_wrfifo(fdc, (c))) { \ 1394 goto xxx; \ 1395 } \ 1396 } while(0) 1397 1398 struct fd_softc *fd; 1399 struct buf *bp; 1400 int read, head, sec, nblks; 1401 struct fd_type *type; 1402 struct ne7_fd_formb *finfo = NULL; 1403 1404 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1405 /* Prevent loop if the reset sequence produces errors */ 1406 if (fdc->sc_state != RESETCOMPLETE && 1407 fdc->sc_state != RECALWAIT && 1408 fdc->sc_state != RECALCOMPLETE) 1409 fdc->sc_state = DORESET; 1410 } 1411 1412 /* Clear I task/status field */ 1413 fdc->sc_istatus = FDC_ISTATUS_NONE; 1414 fdc->sc_itask = FDC_ITASK_NONE; 1415 1416 loop: 1417 /* Is there a drive for the controller to do a transfer with? */ 1418 fd = fdc->sc_drives.tqh_first; 1419 if (fd == NULL) { 1420 fdc->sc_state = DEVIDLE; 1421 return (0); 1422 } 1423 1424 /* Is there a transfer to this drive? If not, deactivate drive. */ 1425 bp = BUFQ_PEEK(&fd->sc_q); 1426 if (bp == NULL) { 1427 fd->sc_ops = 0; 1428 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1429 fd->sc_active = 0; 1430 goto loop; 1431 } 1432 1433 if (bp->b_flags & B_FORMAT) 1434 finfo = (struct ne7_fd_formb *)bp->b_data; 1435 1436 switch (fdc->sc_state) { 1437 case DEVIDLE: 1438 fdc->sc_errors = 0; 1439 fd->sc_skip = 0; 1440 fd->sc_bcount = bp->b_bcount; 1441 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1442 callout_stop(&fd->sc_motoroff_ch); 1443 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1444 fdc->sc_state = MOTORWAIT; 1445 return (1); 1446 } 1447 if ((fd->sc_flags & FD_MOTOR) == 0) { 1448 /* Turn on the motor, being careful about pairing. */ 1449 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1450 if (ofd && ofd->sc_flags & FD_MOTOR) { 1451 callout_stop(&ofd->sc_motoroff_ch); 1452 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1453 } 1454 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1455 fd_set_motor(fdc); 1456 fdc->sc_state = MOTORWAIT; 1457 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1458 /* Allow .25s for motor to stabilize. */ 1459 callout_reset(&fd->sc_motoron_ch, hz / 4, 1460 fd_motor_on, fd); 1461 } else { 1462 fd->sc_flags &= ~FD_MOTOR_WAIT; 1463 goto loop; 1464 } 1465 return (1); 1466 } 1467 /* Make sure the right drive is selected. */ 1468 fd_set_motor(fdc); 1469 1470 /*FALLTHROUGH*/ 1471 case DOSEEK: 1472 doseek: 1473 if ((fdc->sc_flags & FDC_EIS) && 1474 (bp->b_flags & B_FORMAT) == 0) { 1475 fd->sc_cylin = bp->b_cylinder; 1476 /* We use implied seek */ 1477 goto doio; 1478 } 1479 1480 if (fd->sc_cylin == bp->b_cylinder) 1481 goto doio; 1482 1483 fd->sc_cylin = -1; 1484 fdc->sc_state = SEEKWAIT; 1485 fdc->sc_nstat = 0; 1486 1487 fd->sc_dk.dk_seek++; 1488 1489 disk_busy(&fd->sc_dk); 1490 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1491 1492 /* specify command */ 1493 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1494 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1495 /* XXX head load time == 6ms */ 1496 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1497 1498 fdc->sc_itask = FDC_ITASK_SENSEI; 1499 /* seek function */ 1500 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1501 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1502 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1503 return (1); 1504 1505 case DOIO: 1506 doio: 1507 if (finfo != NULL) 1508 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1509 (char *)finfo; 1510 type = fd->sc_type; 1511 sec = fd->sc_blkno % type->seccyl; 1512 nblks = type->seccyl - sec; 1513 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1514 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1515 fd->sc_nblks = nblks; 1516 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1517 head = sec / type->sectrac; 1518 sec -= head * type->sectrac; 1519 #ifdef DIAGNOSTIC 1520 {int block; 1521 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1522 if (block != fd->sc_blkno) { 1523 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1524 #ifdef DDB 1525 Debugger(); 1526 #endif 1527 }} 1528 #endif 1529 read = bp->b_flags & B_READ; 1530 1531 /* Setup for pseudo DMA */ 1532 fdc->sc_data = bp->b_data + fd->sc_skip; 1533 fdc->sc_tc = fd->sc_nbytes; 1534 1535 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1536 fdc->sc_reg_drs, type->rate); 1537 #ifdef FD_DEBUG 1538 if (fdc_debug > 1) 1539 printf("fdcstate: doio: %s drive %d " 1540 "track %d head %d sec %d nblks %d\n", 1541 finfo ? "format" : 1542 (read ? "read" : "write"), 1543 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1544 #endif 1545 fdc->sc_state = IOCOMPLETE; 1546 fdc->sc_itask = FDC_ITASK_DMA; 1547 fdc->sc_nstat = 0; 1548 1549 disk_busy(&fd->sc_dk); 1550 1551 /* allow 3 seconds for operation */ 1552 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1553 1554 if (finfo != NULL) { 1555 /* formatting */ 1556 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1557 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1558 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1559 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1560 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1561 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1562 } else { 1563 if (read) 1564 FDC_WRFIFO(fdc, NE7CMD_READ); 1565 else 1566 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1567 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1568 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1569 FDC_WRFIFO(fdc, head); 1570 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1571 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1572 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1573 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1574 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1575 } 1576 1577 return (1); /* will return later */ 1578 1579 case SEEKWAIT: 1580 callout_stop(&fdc->sc_timo_ch); 1581 fdc->sc_state = SEEKCOMPLETE; 1582 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1583 /* allow 1/50 second for heads to settle */ 1584 callout_reset(&fdc->sc_intr_ch, hz / 50, 1585 fdcpseudointr, fdc); 1586 return (1); /* will return later */ 1587 } 1588 /*FALLTHROUGH*/ 1589 case SEEKCOMPLETE: 1590 /* no data on seek */ 1591 disk_unbusy(&fd->sc_dk, 0, 0); 1592 1593 /* Make sure seek really happened. */ 1594 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1595 cyl != bp->b_cylinder * fd->sc_type->step) { 1596 #ifdef FD_DEBUG 1597 if (fdc_debug) 1598 fdcstatus(fdc, "seek failed"); 1599 #endif 1600 fdcretry(fdc); 1601 goto loop; 1602 } 1603 fd->sc_cylin = bp->b_cylinder; 1604 goto doio; 1605 1606 case IOTIMEDOUT: 1607 /* 1608 * Try to abort the I/O operation without resetting 1609 * the chip first. Poke TC and arrange to pick up 1610 * the timed out I/O command's status. 1611 */ 1612 fdc->sc_itask = FDC_ITASK_RESULT; 1613 fdc->sc_state = IOCLEANUPWAIT; 1614 fdc->sc_nstat = 0; 1615 /* 1/10 second should be enough */ 1616 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1617 FTC_FLIP; 1618 return (1); 1619 1620 case IOCLEANUPTIMEDOUT: 1621 case SEEKTIMEDOUT: 1622 case RECALTIMEDOUT: 1623 case RESETTIMEDOUT: 1624 fdcstatus(fdc, "timeout"); 1625 1626 /* All other timeouts always roll through to a chip reset */ 1627 fdcretry(fdc); 1628 1629 /* Force reset, no matter what fdcretry() says */ 1630 fdc->sc_state = DORESET; 1631 goto loop; 1632 1633 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1634 callout_stop(&fdc->sc_timo_ch); 1635 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1636 (bp->b_flags & B_READ)); 1637 fdcretry(fdc); 1638 goto loop; 1639 1640 case IOCOMPLETE: /* IO DONE, post-analyze */ 1641 callout_stop(&fdc->sc_timo_ch); 1642 1643 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1644 (bp->b_flags & B_READ)); 1645 1646 if (fdc->sc_nstat != 7 || st1 != 0 || 1647 ((st0 & 0xf8) != 0 && 1648 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1649 #ifdef FD_DEBUG 1650 if (fdc_debug) { 1651 fdcstatus(fdc, 1652 bp->b_flags & B_READ 1653 ? "read failed" : "write failed"); 1654 printf("blkno %d nblks %d nstat %d tc %d\n", 1655 fd->sc_blkno, fd->sc_nblks, 1656 fdc->sc_nstat, fdc->sc_tc); 1657 } 1658 #endif 1659 if (fdc->sc_nstat == 7 && 1660 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1661 1662 /* 1663 * Silently retry overruns if no other 1664 * error bit is set. Adjust threshold. 1665 */ 1666 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1667 if (thr < 15) { 1668 thr++; 1669 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1670 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1671 #ifdef FD_DEBUG 1672 if (fdc_debug) 1673 printf("fdc: %d -> threshold\n", thr); 1674 #endif 1675 fdconf(fdc); 1676 fdc->sc_overruns = 0; 1677 } 1678 if (++fdc->sc_overruns < 3) { 1679 fdc->sc_state = DOIO; 1680 goto loop; 1681 } 1682 } 1683 fdcretry(fdc); 1684 goto loop; 1685 } 1686 if (fdc->sc_errors) { 1687 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1688 fd->sc_skip / FD_BSIZE(fd), 1689 (struct disklabel *)NULL); 1690 printf("\n"); 1691 fdc->sc_errors = 0; 1692 } else { 1693 if (--fdc->sc_overruns < -20) { 1694 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1695 if (thr > 0) { 1696 thr--; 1697 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1698 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1699 #ifdef FD_DEBUG 1700 if (fdc_debug) 1701 printf("fdc: %d -> threshold\n", thr); 1702 #endif 1703 fdconf(fdc); 1704 } 1705 fdc->sc_overruns = 0; 1706 } 1707 } 1708 fd->sc_blkno += fd->sc_nblks; 1709 fd->sc_skip += fd->sc_nbytes; 1710 fd->sc_bcount -= fd->sc_nbytes; 1711 if (finfo == NULL && fd->sc_bcount > 0) { 1712 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1713 goto doseek; 1714 } 1715 fdfinish(fd, bp); 1716 goto loop; 1717 1718 case DORESET: 1719 /* try a reset, keep motor on */ 1720 fd_set_motor(fdc); 1721 delay(100); 1722 fdc->sc_nstat = 0; 1723 fdc->sc_itask = FDC_ITASK_SENSEI; 1724 fdc->sc_state = RESETCOMPLETE; 1725 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1726 fdc_reset(fdc); 1727 return (1); /* will return later */ 1728 1729 case RESETCOMPLETE: 1730 callout_stop(&fdc->sc_timo_ch); 1731 fdconf(fdc); 1732 1733 /* FALLTHROUGH */ 1734 case DORECAL: 1735 fdc->sc_state = RECALWAIT; 1736 fdc->sc_itask = FDC_ITASK_SENSEI; 1737 fdc->sc_nstat = 0; 1738 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1739 /* recalibrate function */ 1740 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1741 FDC_WRFIFO(fdc, fd->sc_drive); 1742 return (1); /* will return later */ 1743 1744 case RECALWAIT: 1745 callout_stop(&fdc->sc_timo_ch); 1746 fdc->sc_state = RECALCOMPLETE; 1747 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1748 /* allow 1/30 second for heads to settle */ 1749 callout_reset(&fdc->sc_intr_ch, hz / 30, 1750 fdcpseudointr, fdc); 1751 return (1); /* will return later */ 1752 } 1753 1754 case RECALCOMPLETE: 1755 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1756 #ifdef FD_DEBUG 1757 if (fdc_debug) 1758 fdcstatus(fdc, "recalibrate failed"); 1759 #endif 1760 fdcretry(fdc); 1761 goto loop; 1762 } 1763 fd->sc_cylin = 0; 1764 goto doseek; 1765 1766 case MOTORWAIT: 1767 if (fd->sc_flags & FD_MOTOR_WAIT) 1768 return (1); /* time's not up yet */ 1769 goto doseek; 1770 1771 default: 1772 fdcstatus(fdc, "stray interrupt"); 1773 return (1); 1774 } 1775 #ifdef DIAGNOSTIC 1776 panic("fdcintr: impossible"); 1777 #endif 1778 1779 xxx: 1780 /* 1781 * We get here if the chip locks up in FDC_WRFIFO() 1782 * Cancel any operation and schedule a reset 1783 */ 1784 callout_stop(&fdc->sc_timo_ch); 1785 fdcretry(fdc); 1786 (fdc)->sc_state = DORESET; 1787 goto loop; 1788 1789 #undef st0 1790 #undef st1 1791 #undef cyl 1792 } 1793 1794 void 1795 fdcretry(fdc) 1796 struct fdc_softc *fdc; 1797 { 1798 struct fd_softc *fd; 1799 struct buf *bp; 1800 int error = EIO; 1801 1802 fd = fdc->sc_drives.tqh_first; 1803 bp = BUFQ_PEEK(&fd->sc_q); 1804 1805 fdc->sc_overruns = 0; 1806 if (fd->sc_opts & FDOPT_NORETRY) 1807 goto fail; 1808 1809 switch (fdc->sc_errors) { 1810 case 0: 1811 if (fdc->sc_nstat == 7 && 1812 (fdc->sc_status[0] & 0xd8) == 0x40 && 1813 (fdc->sc_status[1] & 0x2) == 0x2) { 1814 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1815 error = EROFS; 1816 goto failsilent; 1817 } 1818 /* try again */ 1819 fdc->sc_state = 1820 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1821 break; 1822 1823 case 1: case 2: case 3: 1824 /* didn't work; try recalibrating */ 1825 fdc->sc_state = DORECAL; 1826 break; 1827 1828 case 4: 1829 if (fdc->sc_nstat == 7 && 1830 fdc->sc_status[0] == 0 && 1831 fdc->sc_status[1] == 0 && 1832 fdc->sc_status[2] == 0) { 1833 /* 1834 * We've retried a few times and we've got 1835 * valid status and all three status bytes 1836 * are zero. Assume this condition is the 1837 * result of no disk loaded into the drive. 1838 */ 1839 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1840 error = ENODEV; 1841 goto failsilent; 1842 } 1843 1844 /* still no go; reset the bastard */ 1845 fdc->sc_state = DORESET; 1846 break; 1847 1848 default: 1849 fail: 1850 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1851 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1852 fd->sc_skip / FD_BSIZE(fd), 1853 (struct disklabel *)NULL); 1854 printf("\n"); 1855 fdcstatus(fdc, "controller status"); 1856 } 1857 1858 failsilent: 1859 bp->b_flags |= B_ERROR; 1860 bp->b_error = error; 1861 fdfinish(fd, bp); 1862 } 1863 fdc->sc_errors++; 1864 } 1865 1866 int 1867 fdioctl(dev, cmd, addr, flag, p) 1868 dev_t dev; 1869 u_long cmd; 1870 caddr_t addr; 1871 int flag; 1872 struct proc *p; 1873 { 1874 struct fd_softc *fd; 1875 struct fdc_softc *fdc; 1876 struct fdformat_parms *form_parms; 1877 struct fdformat_cmd *form_cmd; 1878 struct ne7_fd_formb *fd_formb; 1879 int il[FD_MAX_NSEC + 1]; 1880 int unit; 1881 int i, j; 1882 int error; 1883 1884 unit = FDUNIT(dev); 1885 if (unit >= fd_cd.cd_ndevs) 1886 return (ENXIO); 1887 1888 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1889 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1890 1891 switch (cmd) { 1892 case DIOCGDINFO: 1893 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1894 return 0; 1895 1896 case DIOCWLABEL: 1897 if ((flag & FWRITE) == 0) 1898 return EBADF; 1899 /* XXX do something */ 1900 return (0); 1901 1902 case DIOCWDINFO: 1903 if ((flag & FWRITE) == 0) 1904 return (EBADF); 1905 1906 error = setdisklabel(fd->sc_dk.dk_label, 1907 (struct disklabel *)addr, 0, 1908 fd->sc_dk.dk_cpulabel); 1909 if (error) 1910 return (error); 1911 1912 error = writedisklabel(dev, fdstrategy, 1913 fd->sc_dk.dk_label, 1914 fd->sc_dk.dk_cpulabel); 1915 return (error); 1916 1917 case DIOCLOCK: 1918 /* 1919 * Nothing to do here, really. 1920 */ 1921 return (0); 1922 1923 case DIOCEJECT: 1924 if (*(int *)addr == 0) { 1925 int part = DISKPART(dev); 1926 /* 1927 * Don't force eject: check that we are the only 1928 * partition open. If so, unlock it. 1929 */ 1930 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1931 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1932 fd->sc_dk.dk_openmask) { 1933 return (EBUSY); 1934 } 1935 } 1936 /* FALLTHROUGH */ 1937 case ODIOCEJECT: 1938 fd_do_eject(fd); 1939 return (0); 1940 1941 case FDIOCGETFORMAT: 1942 form_parms = (struct fdformat_parms *)addr; 1943 form_parms->fdformat_version = FDFORMAT_VERSION; 1944 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1945 form_parms->ncyl = fd->sc_type->cylinders; 1946 form_parms->nspt = fd->sc_type->sectrac; 1947 form_parms->ntrk = fd->sc_type->heads; 1948 form_parms->stepspercyl = fd->sc_type->step; 1949 form_parms->gaplen = fd->sc_type->gap2; 1950 form_parms->fillbyte = fd->sc_type->fillbyte; 1951 form_parms->interleave = fd->sc_type->interleave; 1952 switch (fd->sc_type->rate) { 1953 case FDC_500KBPS: 1954 form_parms->xfer_rate = 500 * 1024; 1955 break; 1956 case FDC_300KBPS: 1957 form_parms->xfer_rate = 300 * 1024; 1958 break; 1959 case FDC_250KBPS: 1960 form_parms->xfer_rate = 250 * 1024; 1961 break; 1962 default: 1963 return (EINVAL); 1964 } 1965 return (0); 1966 1967 case FDIOCSETFORMAT: 1968 if ((flag & FWRITE) == 0) 1969 return (EBADF); /* must be opened for writing */ 1970 1971 form_parms = (struct fdformat_parms *)addr; 1972 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1973 return (EINVAL);/* wrong version of formatting prog */ 1974 1975 i = form_parms->nbps >> 7; 1976 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1977 i & ~(1 << (ffs(i)-1))) 1978 /* not a power-of-two multiple of 128 */ 1979 return (EINVAL); 1980 1981 switch (form_parms->xfer_rate) { 1982 case 500 * 1024: 1983 fd->sc_type->rate = FDC_500KBPS; 1984 break; 1985 case 300 * 1024: 1986 fd->sc_type->rate = FDC_300KBPS; 1987 break; 1988 case 250 * 1024: 1989 fd->sc_type->rate = FDC_250KBPS; 1990 break; 1991 default: 1992 return (EINVAL); 1993 } 1994 1995 if (form_parms->nspt > FD_MAX_NSEC || 1996 form_parms->fillbyte > 0xff || 1997 form_parms->interleave > 0xff) 1998 return EINVAL; 1999 fd->sc_type->sectrac = form_parms->nspt; 2000 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2001 return EINVAL; 2002 fd->sc_type->heads = form_parms->ntrk; 2003 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2004 fd->sc_type->secsize = ffs(i)-1; 2005 fd->sc_type->gap2 = form_parms->gaplen; 2006 fd->sc_type->cylinders = form_parms->ncyl; 2007 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2008 form_parms->nbps / DEV_BSIZE; 2009 fd->sc_type->step = form_parms->stepspercyl; 2010 fd->sc_type->fillbyte = form_parms->fillbyte; 2011 fd->sc_type->interleave = form_parms->interleave; 2012 return (0); 2013 2014 case FDIOCFORMAT_TRACK: 2015 if((flag & FWRITE) == 0) 2016 /* must be opened for writing */ 2017 return (EBADF); 2018 form_cmd = (struct fdformat_cmd *)addr; 2019 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2020 /* wrong version of formatting prog */ 2021 return (EINVAL); 2022 2023 if (form_cmd->head >= fd->sc_type->heads || 2024 form_cmd->cylinder >= fd->sc_type->cylinders) { 2025 return (EINVAL); 2026 } 2027 2028 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2029 M_TEMP, M_NOWAIT); 2030 if (fd_formb == 0) 2031 return (ENOMEM); 2032 2033 fd_formb->head = form_cmd->head; 2034 fd_formb->cyl = form_cmd->cylinder; 2035 fd_formb->transfer_rate = fd->sc_type->rate; 2036 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2037 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2038 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2039 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2040 2041 bzero(il, sizeof il); 2042 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2043 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2044 j++; 2045 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2046 j += fd->sc_type->interleave; 2047 } 2048 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2049 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2050 fd_formb->fd_formb_headno(i) = form_cmd->head; 2051 fd_formb->fd_formb_secno(i) = il[i+1]; 2052 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2053 } 2054 2055 error = fdformat(dev, fd_formb, p); 2056 free(fd_formb, M_TEMP); 2057 return error; 2058 2059 case FDIOCGETOPTS: /* get drive options */ 2060 *(int *)addr = fd->sc_opts; 2061 return (0); 2062 2063 case FDIOCSETOPTS: /* set drive options */ 2064 fd->sc_opts = *(int *)addr; 2065 return (0); 2066 2067 #ifdef FD_DEBUG 2068 case _IO('f', 100): 2069 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2070 fdcresult(fdc); 2071 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2072 for (i = 0; i < fdc->sc_nstat; i++) 2073 printf(" 0x%x", fdc->sc_status[i]); 2074 printf(">\n"); 2075 return (0); 2076 2077 case _IOW('f', 101, int): 2078 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2079 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2080 fdconf(fdc); 2081 return (0); 2082 2083 case _IO('f', 102): 2084 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2085 fdcresult(fdc); 2086 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2087 for (i=0; i< fdc->sc_nstat; i++) 2088 printf(" 0x%x", fdc->sc_status[i]); 2089 printf(">\n"); 2090 return (0); 2091 #endif 2092 default: 2093 return (ENOTTY); 2094 } 2095 2096 #ifdef DIAGNOSTIC 2097 panic("fdioctl: impossible"); 2098 #endif 2099 } 2100 2101 int 2102 fdformat(dev, finfo, p) 2103 dev_t dev; 2104 struct ne7_fd_formb *finfo; 2105 struct proc *p; 2106 { 2107 int rv = 0, s; 2108 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2109 struct fd_type *type = fd->sc_type; 2110 struct buf *bp; 2111 2112 /* set up a buffer header for fdstrategy() */ 2113 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2114 if (bp == 0) 2115 return (ENOBUFS); 2116 2117 memset((void *)bp, 0, sizeof(struct buf)); 2118 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2119 bp->b_proc = p; 2120 bp->b_dev = dev; 2121 2122 /* 2123 * Calculate a fake blkno, so fdstrategy() would initiate a 2124 * seek to the requested cylinder. 2125 */ 2126 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2127 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2128 / DEV_BSIZE; 2129 2130 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2131 bp->b_data = (caddr_t)finfo; 2132 2133 #ifdef FD_DEBUG 2134 if (fdc_debug) { 2135 int i; 2136 2137 printf("fdformat: blkno 0x%x count %ld\n", 2138 bp->b_blkno, bp->b_bcount); 2139 2140 printf("\tcyl:\t%d\n", finfo->cyl); 2141 printf("\thead:\t%d\n", finfo->head); 2142 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2143 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2144 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2145 printf("\ttrack data:"); 2146 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2147 printf(" [c%d h%d s%d]", 2148 finfo->fd_formb_cylno(i), 2149 finfo->fd_formb_headno(i), 2150 finfo->fd_formb_secno(i) ); 2151 if (finfo->fd_formb_secsize(i) != 2) 2152 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2153 } 2154 printf("\n"); 2155 } 2156 #endif 2157 2158 /* now do the format */ 2159 fdstrategy(bp); 2160 2161 /* ...and wait for it to complete */ 2162 s = splbio(); 2163 while (!(bp->b_flags & B_DONE)) { 2164 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2165 if (rv == EWOULDBLOCK) 2166 break; 2167 } 2168 splx(s); 2169 2170 if (rv == EWOULDBLOCK) { 2171 /* timed out */ 2172 rv = EIO; 2173 biodone(bp); 2174 } 2175 if (bp->b_flags & B_ERROR) { 2176 rv = bp->b_error; 2177 } 2178 free(bp, M_TEMP); 2179 return (rv); 2180 } 2181 2182 void 2183 fdgetdisklabel(dev) 2184 dev_t dev; 2185 { 2186 int unit = FDUNIT(dev), i; 2187 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2188 struct disklabel *lp = fd->sc_dk.dk_label; 2189 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2190 2191 bzero(lp, sizeof(struct disklabel)); 2192 bzero(lp, sizeof(struct cpu_disklabel)); 2193 2194 lp->d_type = DTYPE_FLOPPY; 2195 lp->d_secsize = FD_BSIZE(fd); 2196 lp->d_secpercyl = fd->sc_type->seccyl; 2197 lp->d_nsectors = fd->sc_type->sectrac; 2198 lp->d_ncylinders = fd->sc_type->cylinders; 2199 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2200 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2201 lp->d_rpm = 3600; /* XXX like it matters... */ 2202 2203 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2204 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2205 lp->d_interleave = 1; 2206 2207 lp->d_partitions[RAW_PART].p_offset = 0; 2208 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2209 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2210 lp->d_npartitions = RAW_PART + 1; 2211 2212 lp->d_magic = DISKMAGIC; 2213 lp->d_magic2 = DISKMAGIC; 2214 lp->d_checksum = dkcksum(lp); 2215 2216 /* 2217 * Call the generic disklabel extraction routine. If there's 2218 * not a label there, fake it. 2219 */ 2220 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2221 strncpy(lp->d_packname, "default label", 2222 sizeof(lp->d_packname)); 2223 /* 2224 * Reset the partition info; it might have gotten 2225 * trashed in readdisklabel(). 2226 * 2227 * XXX Why do we have to do this? readdisklabel() 2228 * should be safe... 2229 */ 2230 for (i = 0; i < MAXPARTITIONS; ++i) { 2231 lp->d_partitions[i].p_offset = 0; 2232 if (i == RAW_PART) { 2233 lp->d_partitions[i].p_size = 2234 lp->d_secpercyl * lp->d_ncylinders; 2235 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2236 } else { 2237 lp->d_partitions[i].p_size = 0; 2238 lp->d_partitions[i].p_fstype = FS_UNUSED; 2239 } 2240 } 2241 lp->d_npartitions = RAW_PART + 1; 2242 } 2243 } 2244 2245 void 2246 fd_do_eject(fd) 2247 struct fd_softc *fd; 2248 { 2249 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2250 2251 if (CPU_ISSUN4C) { 2252 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2253 delay(10); 2254 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2255 return; 2256 } 2257 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2258 bus_space_tag_t t = fdc->sc_bustag; 2259 bus_space_handle_t h = fdc->sc_handle; 2260 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2261 2262 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2263 delay(10); 2264 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2265 return; 2266 } 2267 } 2268 2269 #ifdef MEMORY_DISK_HOOKS 2270 int fd_read_md_image __P((size_t *, caddr_t *)); 2271 #endif 2272 2273 /* ARGSUSED */ 2274 void 2275 fd_mountroot_hook(dev) 2276 struct device *dev; 2277 { 2278 int c; 2279 2280 fd_do_eject((struct fd_softc *)dev); 2281 printf("Insert filesystem floppy and press return."); 2282 for (;;) { 2283 c = cngetc(); 2284 if ((c == '\r') || (c == '\n')) { 2285 printf("\n"); 2286 break; 2287 } 2288 } 2289 } 2290 2291 #ifdef MEMORY_DISK_HOOKS 2292 2293 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2294 2295 int 2296 fd_read_md_image(sizep, addrp) 2297 size_t *sizep; 2298 caddr_t *addrp; 2299 { 2300 struct buf buf, *bp = &buf; 2301 dev_t dev; 2302 off_t offset; 2303 caddr_t addr; 2304 2305 dev = makedev(54,0); /* XXX */ 2306 2307 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2308 *addrp = addr; 2309 2310 if (fdopen(dev, 0, S_IFCHR, NULL)) 2311 panic("fd: mountroot: fdopen"); 2312 2313 offset = 0; 2314 2315 for (;;) { 2316 bp->b_dev = dev; 2317 bp->b_error = 0; 2318 bp->b_resid = 0; 2319 bp->b_proc = NULL; 2320 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2321 bp->b_blkno = btodb(offset); 2322 bp->b_bcount = DEV_BSIZE; 2323 bp->b_data = addr; 2324 fdstrategy(bp); 2325 while ((bp->b_flags & B_DONE) == 0) { 2326 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2327 } 2328 if (bp->b_error) 2329 panic("fd: mountroot: fdread error %d", bp->b_error); 2330 2331 if (bp->b_resid != 0) 2332 break; 2333 2334 addr += DEV_BSIZE; 2335 offset += DEV_BSIZE; 2336 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2337 break; 2338 } 2339 (void)fdclose(dev, 0, S_IFCHR, NULL); 2340 *sizep = offset; 2341 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2342 return (0); 2343 } 2344 #endif 2345
Indexes created Fri Oct 03 02:09:57 GMT 2025