fdc.c revision 1.3
1 /* $NetBSD: fdc.c,v 1.3 2007/03/02 07:17:19 jnemeth 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) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /*- 74 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 75 * 76 * This code is derived from software contributed to Berkeley by 77 * Don Ahn. 78 * 79 * Redistribution and use in source and binary forms, with or without 80 * modification, are permitted provided that the following conditions 81 * are met: 82 * 1. Redistributions of source code must retain the above copyright 83 * notice, this list of conditions and the following disclaimer. 84 * 2. Redistributions in binary form must reproduce the above copyright 85 * notice, this list of conditions and the following disclaimer in the 86 * documentation and/or other materials provided with the distribution. 87 * 3. All advertising materials mentioning features or use of this software 88 * must display the following acknowledgement: 89 * This product includes software developed by the University of 90 * California, Berkeley and its contributors. 91 * 4. Neither the name of the University nor the names of its contributors 92 * may be used to endorse or promote products derived from this software 93 * without specific prior written permission. 94 * 95 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 96 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 97 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 98 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 99 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 100 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 101 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 103 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 104 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 105 * SUCH DAMAGE. 106 * 107 * @(#)fd.c 7.4 (Berkeley) 5/25/91 108 */ 109 110 #include <sys/cdefs.h> 111 __KERNEL_RCSID(0, "$NetBSD: fdc.c,v 1.3 2007/03/02 07:17:19 jnemeth Exp $"); 112 113 #include "opt_ddb.h" 114 #include "opt_md.h" 115 116 #include <sys/param.h> 117 #include <sys/systm.h> 118 #include <sys/callout.h> 119 #include <sys/kernel.h> 120 #include <sys/file.h> 121 #include <sys/ioctl.h> 122 #include <sys/device.h> 123 #include <sys/disklabel.h> 124 #include <sys/disk.h> 125 #include <sys/fdio.h> 126 #include <sys/buf.h> 127 #include <sys/bufq.h> 128 #include <sys/malloc.h> 129 #include <sys/proc.h> 130 #include <sys/uio.h> 131 #include <sys/stat.h> 132 #include <sys/syslog.h> 133 #include <sys/queue.h> 134 #include <sys/conf.h> 135 136 #include <dev/cons.h> 137 138 #include <uvm/uvm_extern.h> 139 140 #include <machine/autoconf.h> 141 #include <machine/intr.h> 142 143 #ifdef SUN4 144 #include <sparc/sparc/auxreg.h> 145 #include <sparc/dev/fdreg.h> 146 #include <sparc/dev/fdvar.h> 147 #elif SUN4U 148 #include <dev/ebus/ebusreg.h> 149 #include <dev/ebus/ebusvar.h> 150 /* #include <sparc/sparc/auxreg.h> */ 151 #include <sparc64/dev/auxioreg.h> 152 #include <sparc64/dev/auxiovar.h> 153 #include <sparc64/dev/fdcreg.h> 154 #include <sparc64/dev/fdcvar.h> 155 #endif 156 157 #define FDUNIT(dev) (minor(dev) / 8) 158 #define FDTYPE(dev) (minor(dev) % 8) 159 160 #ifdef SUN4U 161 #define FTC_FLIP \ 162 do { \ 163 auxio_fd_control(AUXIO_LED_FTC); \ 164 auxio_fd_control(0); \ 165 } while (0) 166 #else 167 #define FTC_FLIP 168 #endif 169 170 /* (mis)use device use flag to identify format operation */ 171 #define B_FORMAT B_DEVPRIVATE 172 173 #define FD_DEBUG 174 #ifdef FD_DEBUG 175 int fdc_debug = 0; 176 #endif 177 178 enum fdc_state { 179 DEVIDLE = 0, 180 MOTORWAIT, /* 1 */ 181 DOSEEK, /* 2 */ 182 SEEKWAIT, /* 3 */ 183 SEEKTIMEDOUT, /* 4 */ 184 SEEKCOMPLETE, /* 5 */ 185 DOIO, /* 6 */ 186 IOCOMPLETE, /* 7 */ 187 IOTIMEDOUT, /* 8 */ 188 IOCLEANUPWAIT, /* 9 */ 189 IOCLEANUPTIMEDOUT,/*10 */ 190 DORESET, /* 11 */ 191 RESETCOMPLETE, /* 12 */ 192 RESETTIMEDOUT, /* 13 */ 193 DORECAL, /* 14 */ 194 RECALWAIT, /* 15 */ 195 RECALTIMEDOUT, /* 16 */ 196 RECALCOMPLETE, /* 17 */ 197 DODSKCHG, /* 18 */ 198 DSKCHGWAIT, /* 19 */ 199 DSKCHGTIMEDOUT, /* 20 */ 200 }; 201 202 /* software state, per controller */ 203 struct fdc_softc { 204 struct device sc_dev; /* boilerplate */ 205 bus_space_tag_t sc_bustag; 206 207 struct callout sc_timo_ch; /* timeout callout */ 208 struct callout sc_intr_ch; /* pseudo-intr callout */ 209 210 struct fd_softc *sc_fd[4]; /* pointers to children */ 211 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 212 enum fdc_state sc_state; 213 int sc_flags; 214 #define FDC_82077 0x01 215 #define FDC_NEEDHEADSETTLE 0x02 216 #define FDC_EIS 0x04 217 #define FDC_NEEDMOTORWAIT 0x08 218 #define FDC_NOEJECT 0x10 219 #define FDC_EBUS 0x20 220 int sc_errors; /* number of retries so far */ 221 int sc_overruns; /* number of DMA overruns */ 222 int sc_cfg; /* current configuration */ 223 struct fdcio sc_io; 224 #define sc_handle sc_io.fdcio_handle 225 #define sc_reg_msr sc_io.fdcio_reg_msr 226 #define sc_reg_fifo sc_io.fdcio_reg_fifo 227 #define sc_reg_dor sc_io.fdcio_reg_dor 228 #define sc_reg_dir sc_io.fdcio_reg_dir 229 #define sc_reg_drs sc_io.fdcio_reg_msr 230 #define sc_itask sc_io.fdcio_itask 231 #define sc_istatus sc_io.fdcio_istatus 232 #define sc_data sc_io.fdcio_data 233 #define sc_tc sc_io.fdcio_tc 234 #define sc_nstat sc_io.fdcio_nstat 235 #define sc_status sc_io.fdcio_status 236 #define sc_intrcnt sc_io.fdcio_intrcnt 237 238 void *sc_sicookie; /* softintr(9) cookie */ 239 }; 240 241 #ifdef SUN4 242 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 243 #endif 244 245 /* controller driver configuration */ 246 #ifdef SUN4 247 int fdcmatch_mainbus(struct device *, struct cfdata *, void*); 248 int fdcmatch_obio(struct device *, struct cfdata *, void *); 249 void fdcattach_mainbus(struct device *, struct device *, void *); 250 void fdcattach_obio(struct device *, struct device *, void *); 251 #elif SUN4U 252 int fdcmatch_sbus(struct device *, struct cfdata *, void *); 253 int fdcmatch_ebus(struct device *, struct cfdata *, void *); 254 void fdcattach_sbus(struct device *, struct device *, void *); 255 void fdcattach_ebus(struct device *, struct device *, void *); 256 #endif 257 258 int fdcattach(struct fdc_softc *, int); 259 260 #ifdef SUN4 261 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 262 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 263 264 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 265 fdcmatch_obio, fdcattach_obio, NULL, NULL); 266 #elif SUN4U 267 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc), 268 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 269 270 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc), 271 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 272 #endif 273 274 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 275 276 /* 277 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 278 * we tell them apart. 279 */ 280 struct fd_type { 281 int sectrac; /* sectors per track */ 282 int heads; /* number of heads */ 283 int seccyl; /* sectors per cylinder */ 284 int secsize; /* size code for sectors */ 285 int datalen; /* data len when secsize = 0 */ 286 int steprate; /* step rate and head unload time */ 287 int gap1; /* gap len between sectors */ 288 int gap2; /* formatting gap */ 289 int cylinders; /* total num of cylinders */ 290 int size; /* size of disk in sectors */ 291 int step; /* steps per cylinder */ 292 int rate; /* transfer speed code */ 293 int fillbyte; /* format fill byte */ 294 int interleave; /* interleave factor (formatting) */ 295 const char *name; 296 }; 297 298 /* The order of entries in the following table is important -- BEWARE! */ 299 struct fd_type fd_types[] = { 300 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 301 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 302 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 303 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 304 }; 305 306 /* software state, per disk (with up to 4 disks per ctlr) */ 307 struct fd_softc { 308 struct device sc_dv; /* generic device info */ 309 struct disk sc_dk; /* generic disk info */ 310 311 struct fd_type *sc_deftype; /* default type descriptor */ 312 struct fd_type *sc_type; /* current type descriptor */ 313 314 struct callout sc_motoron_ch; 315 struct callout sc_motoroff_ch; 316 317 daddr_t sc_blkno; /* starting block number */ 318 int sc_bcount; /* byte count left */ 319 int sc_skip; /* bytes already transferred */ 320 int sc_nblks; /* number of blocks currently transferring */ 321 int sc_nbytes; /* number of bytes currently transferring */ 322 323 int sc_drive; /* physical unit number */ 324 int sc_flags; 325 #define FD_OPEN 0x01 /* it's open */ 326 #define FD_MOTOR 0x02 /* motor should be on */ 327 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 328 int sc_cylin; /* where we think the head is */ 329 int sc_opts; /* user-set options */ 330 331 void *sc_sdhook; /* shutdownhook cookie */ 332 333 TAILQ_ENTRY(fd_softc) sc_drivechain; 334 int sc_ops; /* I/O ops since last switch */ 335 struct bufq_state *sc_q;/* pending I/O requests */ 336 int sc_active; /* number of active I/O requests */ 337 }; 338 339 /* floppy driver configuration */ 340 int fdmatch(struct device *, struct cfdata *, void *); 341 void fdattach(struct device *, struct device *, void *); 342 343 CFATTACH_DECL(fd, sizeof(struct fd_softc), 344 fdmatch, fdattach, NULL, NULL); 345 346 extern struct cfdriver fd_cd; 347 348 dev_type_open(fdopen); 349 dev_type_close(fdclose); 350 dev_type_read(fdread); 351 dev_type_write(fdwrite); 352 dev_type_ioctl(fdioctl); 353 dev_type_strategy(fdstrategy); 354 355 const struct bdevsw fd_bdevsw = { 356 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 357 }; 358 359 const struct cdevsw fd_cdevsw = { 360 fdopen, fdclose, fdread, fdwrite, fdioctl, 361 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 362 }; 363 364 void fdgetdisklabel(dev_t); 365 int fd_get_parms(struct fd_softc *); 366 void fdstrategy(struct buf *); 367 void fdstart(struct fd_softc *); 368 int fdprint(void *, const char *); 369 370 struct dkdriver fddkdriver = { fdstrategy, NULL }; 371 372 struct fd_type *fd_nvtotype(char *, int, int); 373 void fd_set_motor(struct fdc_softc *); 374 void fd_motor_off(void *); 375 void fd_motor_on(void *); 376 int fdcresult(struct fdc_softc *); 377 int fdc_wrfifo(struct fdc_softc *, uint8_t); 378 void fdcstart(struct fdc_softc *); 379 void fdcstatus(struct fdc_softc *, const char *); 380 void fdc_reset(struct fdc_softc *); 381 int fdc_diskchange(struct fdc_softc *); 382 void fdctimeout(void *); 383 void fdcpseudointr(void *); 384 int fdc_c_hwintr(void *); 385 void fdchwintr(void); 386 void fdcswintr(void *); 387 int fdcstate(struct fdc_softc *); 388 void fdcretry(struct fdc_softc *); 389 void fdfinish(struct fd_softc *, struct buf *); 390 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 391 void fd_do_eject(struct fd_softc *); 392 void fd_mountroot_hook(struct device *); 393 static int fdconf(struct fdc_softc *); 394 static void establish_chip_type( 395 struct fdc_softc *, 396 bus_space_tag_t, 397 bus_addr_t, 398 bus_size_t, 399 bus_space_handle_t); 400 401 #ifdef MEMORY_DISK_HOOKS 402 int fd_read_md_image(size_t *, caddr_t *); 403 #endif 404 405 #ifdef SUN4 406 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 407 408 int 409 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 410 { 411 struct mainbus_attach_args *ma = aux; 412 413 /* 414 * Floppy controller is on mainbus on sun4c. 415 */ 416 if (!CPU_ISSUN4C) 417 return 0; 418 419 /* sun4c PROMs call the controller "fd" */ 420 if (strcmp("fd", ma->ma_name) != 0) 421 return 0; 422 423 return bus_space_probe(ma->ma_bustag, 424 ma->ma_paddr, 425 1, /* probe size */ 426 0, /* offset */ 427 0, /* flags */ 428 NULL, NULL); 429 } 430 431 int 432 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 433 { 434 union obio_attach_args *uoba = aux; 435 struct sbus_attach_args *sa; 436 437 /* 438 * Floppy controller is on obio on sun4m. 439 */ 440 if (uoba->uoba_isobio4 != 0) 441 return 0; 442 443 sa = &uoba->uoba_sbus; 444 445 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 446 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 447 return 0; 448 449 return bus_space_probe(sa->sa_bustag, 450 sbus_bus_addr(sa->sa_bustag, 451 sa->sa_slot, sa->sa_offset), 452 1, /* probe size */ 453 0, /* offset */ 454 0, /* flags */ 455 NULL, NULL); 456 } 457 458 #elif SUN4U 459 460 int 461 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux) 462 { 463 struct sbus_attach_args *sa = aux; 464 465 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 466 } 467 468 int 469 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux) 470 { 471 struct ebus_attach_args *ea = aux; 472 473 return strcmp("fdthree", ea->ea_name) == 0; 474 } 475 #endif 476 477 static void 478 establish_chip_type(struct fdc_softc *fdc, 479 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 480 bus_space_handle_t handle) 481 { 482 uint8_t v; 483 484 /* 485 * This hack from Chris Torek: apparently DOR really 486 * addresses MSR/DRS on a 82072. 487 * We used to rely on the VERSION command to tell the 488 * difference (which did not work). 489 */ 490 491 /* First, check the size of the register bank */ 492 if (size < 8) 493 /* It isn't a 82077 */ 494 return; 495 496 #ifdef SUN4 497 /* Then probe the DOR register offset */ 498 if (bus_space_probe(tag, addr, 499 1, /* probe size */ 500 FDREG77_DOR, /* offset */ 501 0, /* flags */ 502 NULL, NULL) == 0) { 503 504 /* It isn't a 82077 */ 505 return; 506 } 507 #endif 508 509 v = bus_space_read_1(tag, handle, FDREG77_DOR); 510 if (v == NE7_RQM) { 511 /* 512 * Value in DOR looks like it's really MSR 513 */ 514 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 515 v = bus_space_read_1(tag, handle, FDREG77_DOR); 516 if (v == NE7_RQM) { 517 /* 518 * The value in the DOR didn't stick; 519 * it isn't a 82077 520 */ 521 return; 522 } 523 } 524 525 fdc->sc_flags |= FDC_82077; 526 } 527 528 /* 529 * Arguments passed between fdcattach and fdprobe. 530 */ 531 struct fdc_attach_args { 532 int fa_drive; 533 struct fd_type *fa_deftype; 534 }; 535 536 /* 537 * Print the location of a disk drive (called just before attaching the 538 * the drive). If `fdc' is not NULL, the drive was found but was not 539 * in the system config file; print the drive name as well. 540 * Return QUIET (config_find ignores this if the device was configured) to 541 * avoid printing `fdN not configured' messages. 542 */ 543 int 544 fdprint(void *aux, const char *fdc) 545 { 546 register struct fdc_attach_args *fa = aux; 547 548 if (!fdc) 549 aprint_normal(" drive %d", fa->fa_drive); 550 return QUIET; 551 } 552 553 /* 554 * Configure several parameters and features on the FDC. 555 * Return 0 on success. 556 */ 557 static int 558 fdconf(struct fdc_softc *fdc) 559 { 560 int vroom; 561 562 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 563 return -1; 564 565 /* 566 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 567 * the PROM thinks is appropriate. 568 */ 569 if ((vroom = fdc->sc_status[7]) == 0) 570 vroom = 0x64; 571 572 /* Configure controller to use FIFO and Implied Seek */ 573 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 574 return -1; 575 if (fdc_wrfifo(fdc, vroom) != 0) 576 return -1; 577 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 578 return -1; 579 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 580 return -1; 581 /* No result phase for the NE7CMD_CFG command */ 582 583 if ((fdc->sc_flags & FDC_82077) != 0) { 584 /* Lock configuration across soft resets. */ 585 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 586 fdcresult(fdc) != 1) { 587 #ifdef DEBUG 588 printf("fdconf: CFGLOCK failed"); 589 #endif 590 return -1; 591 } 592 } 593 594 return 0; 595 #if 0 596 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 597 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 598 if (fdc_debug) 599 printf("[version cmd]"); 600 } 601 #endif 602 } 603 604 #ifdef SUN4 605 void 606 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 607 { 608 struct fdc_softc *fdc = (void *)self; 609 struct mainbus_attach_args *ma = aux; 610 611 fdc->sc_bustag = ma->ma_bustag; 612 613 if (bus_space_map( 614 ma->ma_bustag, 615 ma->ma_paddr, 616 ma->ma_size, 617 BUS_SPACE_MAP_LINEAR, 618 &fdc->sc_handle) != 0) { 619 printf("%s: cannot map registers\n", self->dv_xname); 620 return; 621 } 622 623 establish_chip_type(fdc, 624 ma->ma_bustag, 625 ma->ma_paddr, 626 ma->ma_size, 627 fdc->sc_handle); 628 629 if (fdcattach(fdc, ma->ma_pri) != 0) 630 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 631 } 632 633 void 634 fdcattach_obio(struct device *parent, struct device *self, void *aux) 635 { 636 struct fdc_softc *fdc = (void *)self; 637 union obio_attach_args *uoba = aux; 638 struct sbus_attach_args *sa = &uoba->uoba_sbus; 639 640 if (sa->sa_nintr == 0) { 641 printf(": no interrupt line configured\n"); 642 return; 643 } 644 645 fdc->sc_bustag = sa->sa_bustag; 646 647 if (sbus_bus_map(sa->sa_bustag, 648 sa->sa_slot, sa->sa_offset, sa->sa_size, 649 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 650 printf("%s: cannot map control registers\n", 651 self->dv_xname); 652 return; 653 } 654 655 establish_chip_type(fdc, 656 sa->sa_bustag, 657 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 658 sa->sa_size, 659 fdc->sc_handle); 660 661 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 662 print(": no drives attached\n"); 663 return; 664 } 665 666 if (fdcattach(fdc, sa->sa_pri) != 0) 667 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 668 } 669 670 #elif SUN4U 671 672 void 673 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 674 { 675 struct fdc_softc *fdc = (void *)self; 676 struct sbus_attach_args *sa = aux; 677 678 if (sa->sa_nintr == 0) { 679 printf(": no interrupt line configured\n"); 680 return; 681 } 682 683 if (auxio_fd_control(0) != 0) { 684 printf(": can't attach before auxio\n"); 685 return; 686 } 687 688 fdc->sc_bustag = sa->sa_bustag; 689 690 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 691 sa->sa_size, 0, &fdc->sc_handle) != 0) { 692 printf(": cannot map control registers\n"); 693 return; 694 } 695 696 establish_chip_type(fdc, 697 sa->sa_bustag, 698 BUS_ADDR(sa->sa_slot, sa->sa_offset), 699 sa->sa_size, 700 fdc->sc_handle); 701 702 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 703 printf(": no drives attached\n"); 704 return; 705 } 706 707 if (prom_getproplen(sa->sa_node, "manual") >= 0) 708 fdc->sc_flags |= FDC_NOEJECT; 709 710 711 if (fdcattach(fdc, sa->sa_pri) != 0) 712 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 713 } 714 715 void 716 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 717 { 718 struct fdc_softc *fdc = (void *)self; 719 struct ebus_attach_args *ea = aux; 720 int map_vaddr; 721 722 if (ea->ea_nintr == 0) { 723 printf(": no interrupt line configured\n"); 724 return; 725 } 726 727 if (ea->ea_nreg < 3) { 728 printf(": expected 3 registers, only got %d\n", 729 ea->ea_nreg); 730 return; 731 } 732 733 fdc->sc_bustag = ea->ea_bustag; 734 735 if (ea->ea_nvaddr > 0) { 736 sparc_promaddr_to_handle(ea->ea_bustag, 737 ea->ea_vaddr[0], &fdc->sc_handle); 738 map_vaddr = 1; 739 } else if (bus_space_map(fdc->sc_bustag, 740 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 741 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 742 map_vaddr = 0; 743 } else { 744 printf(": can't map control registers\n"); 745 return; 746 } 747 748 establish_chip_type(fdc, 749 fdc->sc_bustag, 750 map_vaddr ? ea->ea_vaddr[0] : 751 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 752 ea->ea_reg[0].size, 753 fdc->sc_handle); 754 755 fdc->sc_flags |= FDC_EBUS; 756 757 if (prom_getproplen(ea->ea_node, "manual") >= 0) 758 fdc->sc_flags |= FDC_NOEJECT; 759 760 /* XXX unmapping if it fails */ 761 fdcattach(fdc, ea->ea_intr[0]); 762 } 763 #endif 764 765 int 766 fdcattach(struct fdc_softc *fdc, int pri) 767 { 768 struct fdc_attach_args fa; 769 int drive_attached; 770 char code; 771 772 callout_init(&fdc->sc_timo_ch); 773 callout_init(&fdc->sc_intr_ch); 774 775 fdc->sc_state = DEVIDLE; 776 fdc->sc_itask = FDC_ITASK_NONE; 777 fdc->sc_istatus = FDC_ISTATUS_NONE; 778 fdc->sc_flags |= FDC_EIS; 779 TAILQ_INIT(&fdc->sc_drives); 780 781 if ((fdc->sc_flags & FDC_82077) != 0) { 782 fdc->sc_reg_msr = FDREG77_MSR; 783 fdc->sc_reg_fifo = FDREG77_FIFO; 784 fdc->sc_reg_dor = FDREG77_DOR; 785 fdc->sc_reg_dir = FDREG77_DIR; 786 code = '7'; 787 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 788 } else { 789 fdc->sc_reg_msr = FDREG72_MSR; 790 fdc->sc_reg_fifo = FDREG72_FIFO; 791 fdc->sc_reg_dor = 0; 792 code = '2'; 793 } 794 795 /* 796 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 797 * Note: CFG_EFIFO is active-low, initial threshold value: 8 798 */ 799 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 800 if (fdconf(fdc) != 0) { 801 printf(": no drives attached\n"); 802 return -1; 803 } 804 805 #ifdef SUN4 806 fdciop = &fdc->sc_io; 807 if (bus_intr_establish2(fdc->sc_bustag, pri, 0 808 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 809 #elif SUN4U 810 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 811 fdc_c_hwintr, fdc) == NULL) { 812 #endif 813 printf("\n%s: cannot register interrupt handler\n", 814 fdc->sc_dev.dv_xname); 815 return -1; 816 } 817 818 #ifdef SUN4 819 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 820 #elif SUN4U 821 fdc->sc_sicookie = softintr_establish(IPL_FDSOFT, fdcswintr, fdc); 822 #endif 823 if (fdc->sc_sicookie == NULL) { 824 printf("\n%s: cannot register soft interrupt handler\n", 825 fdc->sc_dev.dv_xname); 826 return -1; 827 } 828 #ifdef SUN4 829 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 830 #elif SUN4U 831 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 832 if (fdc->sc_flags & FDC_NOEJECT) 833 printf(": manual eject"); 834 printf("\n"); 835 #endif 836 837 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 838 fdc->sc_dev.dv_xname, "intr"); 839 840 /* physical limit: four drives per controller. */ 841 drive_attached = 0; 842 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 843 fa.fa_deftype = NULL; /* unknown */ 844 fa.fa_deftype = &fd_types[0]; /* XXX */ 845 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 846 drive_attached = 1; 847 } 848 849 if (drive_attached == 0) { 850 /* XXX - dis-establish interrupts here */ 851 /* return -1; */ 852 } 853 854 return 0; 855 } 856 857 int 858 fdmatch(struct device *parent, struct cfdata *match, void *aux) 859 { 860 struct fdc_softc *fdc = (void *)parent; 861 bus_space_tag_t t = fdc->sc_bustag; 862 bus_space_handle_t h = fdc->sc_handle; 863 struct fdc_attach_args *fa = aux; 864 int drive = fa->fa_drive; 865 int n, ok; 866 867 if (drive > 0) 868 /* XXX - for now, punt on more than one drive */ 869 return 0; 870 871 if ((fdc->sc_flags & FDC_82077) != 0) { 872 /* select drive and turn on motor */ 873 bus_space_write_1(t, h, fdc->sc_reg_dor, 874 drive | FDO_FRST | FDO_MOEN(drive)); 875 /* wait for motor to spin up */ 876 delay(250000); 877 #ifdef SUN4 878 } else { 879 auxregbisc(AUXIO4C_FDS, 0); 880 #endif 881 } 882 fdc->sc_nstat = 0; 883 fdc_wrfifo(fdc, NE7CMD_RECAL); 884 fdc_wrfifo(fdc, drive); 885 886 /* Wait for recalibration to complete */ 887 for (n = 0; n < 10000; n++) { 888 uint8_t v; 889 890 delay(1000); 891 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 892 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 893 /* wait a bit longer till device *really* is ready */ 894 delay(100000); 895 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 896 break; 897 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 898 /* 899 * Got `invalid command'; we interpret it 900 * to mean that the re-calibrate hasn't in 901 * fact finished yet 902 */ 903 continue; 904 break; 905 } 906 } 907 n = fdc->sc_nstat; 908 #ifdef FD_DEBUG 909 if (fdc_debug) { 910 int i; 911 printf("fdprobe: %d stati:", n); 912 for (i = 0; i < n; i++) 913 printf(" 0x%x", fdc->sc_status[i]); 914 printf("\n"); 915 } 916 #endif 917 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 918 919 /* turn off motor */ 920 if ((fdc->sc_flags & FDC_82077) != 0) { 921 /* deselect drive and turn motor off */ 922 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 923 #ifdef SUN4 924 } else { 925 auxregbisc(0, AUXIO4C_FDS); 926 #endif 927 } 928 929 return ok; 930 } 931 932 /* 933 * Controller is working, and drive responded. Attach it. 934 */ 935 void 936 fdattach(struct device *parent, struct device *self, void *aux) 937 { 938 struct fdc_softc *fdc = (void *)parent; 939 struct fd_softc *fd = (void *)self; 940 struct fdc_attach_args *fa = aux; 941 struct fd_type *type = fa->fa_deftype; 942 int drive = fa->fa_drive; 943 944 callout_init(&fd->sc_motoron_ch); 945 callout_init(&fd->sc_motoroff_ch); 946 947 /* XXX Allow `flags' to override device type? */ 948 949 if (type) 950 printf(": %s %d cyl, %d head, %d sec\n", type->name, 951 type->cylinders, type->heads, type->sectrac); 952 else 953 printf(": density unknown\n"); 954 955 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 956 fd->sc_cylin = -1; 957 fd->sc_drive = drive; 958 fd->sc_deftype = type; 959 fdc->sc_fd[drive] = fd; 960 961 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 962 fdc_wrfifo(fdc, type->steprate); 963 /* XXX head load time == 6ms */ 964 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 965 966 /* 967 * Initialize and attach the disk structure. 968 */ 969 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 970 fd->sc_dk.dk_driver = &fddkdriver; 971 disk_attach(&fd->sc_dk); 972 973 /* 974 * Establish a mountroot_hook anyway in case we booted 975 * with RB_ASKNAME and get selected as the boot device. 976 */ 977 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 978 979 /* Make sure the drive motor gets turned off at shutdown time. */ 980 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 981 } 982 983 inline struct fd_type * 984 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 985 { 986 int type = FDTYPE(dev); 987 988 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 989 return NULL; 990 return type ? &fd_types[type - 1] : fd->sc_deftype; 991 } 992 993 void 994 fdstrategy(struct buf *bp) 995 { 996 struct fd_softc *fd; 997 int unit = FDUNIT(bp->b_dev); 998 int sz; 999 int s; 1000 1001 /* Valid unit, controller, and request? */ 1002 if (unit >= fd_cd.cd_ndevs || 1003 (fd = fd_cd.cd_devs[unit]) == 0 || 1004 bp->b_blkno < 0 || 1005 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1006 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1007 (bp->b_flags & B_FORMAT) == 0)) { 1008 bp->b_error = EINVAL; 1009 goto bad; 1010 } 1011 1012 /* If it's a null transfer, return immediately. */ 1013 if (bp->b_bcount == 0) 1014 goto done; 1015 1016 sz = howmany(bp->b_bcount, DEV_BSIZE); 1017 1018 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1019 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1020 - bp->b_blkno; 1021 if (sz == 0) { 1022 /* If exactly at end of disk, return EOF. */ 1023 bp->b_resid = bp->b_bcount; 1024 goto done; 1025 } 1026 if (sz < 0) { 1027 /* If past end of disk, return EINVAL. */ 1028 bp->b_error = EINVAL; 1029 goto bad; 1030 } 1031 /* Otherwise, truncate request. */ 1032 bp->b_bcount = sz << DEV_BSHIFT; 1033 } 1034 1035 bp->b_rawblkno = bp->b_blkno; 1036 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1037 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1038 1039 #ifdef FD_DEBUG 1040 if (fdc_debug > 1) 1041 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 1042 (long long)bp->b_blkno, bp->b_bcount, 1043 (long long)fd->sc_blkno, bp->b_cylinder); 1044 #endif 1045 1046 /* Queue transfer on drive, activate drive and controller if idle. */ 1047 s = splbio(); 1048 BUFQ_PUT(fd->sc_q, bp); 1049 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1050 if (fd->sc_active == 0) 1051 fdstart(fd); 1052 #ifdef DIAGNOSTIC 1053 else { 1054 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1055 if (fdc->sc_state == DEVIDLE) { 1056 printf("fdstrategy: controller inactive\n"); 1057 fdcstart(fdc); 1058 } 1059 } 1060 #endif 1061 splx(s); 1062 return; 1063 1064 bad: 1065 bp->b_flags |= B_ERROR; 1066 done: 1067 /* Toss transfer; we're done early. */ 1068 biodone(bp); 1069 } 1070 1071 void 1072 fdstart(struct fd_softc *fd) 1073 { 1074 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1075 int active = fdc->sc_drives.tqh_first != 0; 1076 1077 /* Link into controller queue. */ 1078 fd->sc_active = 1; 1079 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1080 1081 /* If controller not already active, start it. */ 1082 if (!active) 1083 fdcstart(fdc); 1084 } 1085 1086 void 1087 fdfinish(struct fd_softc *fd, struct buf *bp) 1088 { 1089 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1090 1091 /* 1092 * Move this drive to the end of the queue to give others a `fair' 1093 * chance. We only force a switch if N operations are completed while 1094 * another drive is waiting to be serviced, since there is a long motor 1095 * startup delay whenever we switch. 1096 */ 1097 (void)BUFQ_GET(fd->sc_q); 1098 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1099 fd->sc_ops = 0; 1100 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1101 if (BUFQ_PEEK(fd->sc_q) != NULL) { 1102 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1103 } else 1104 fd->sc_active = 0; 1105 } 1106 bp->b_resid = fd->sc_bcount; 1107 fd->sc_skip = 0; 1108 1109 biodone(bp); 1110 /* turn off motor 5s from now */ 1111 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1112 fdc->sc_state = DEVIDLE; 1113 } 1114 1115 void 1116 fdc_reset(struct fdc_softc *fdc) 1117 { 1118 bus_space_tag_t t = fdc->sc_bustag; 1119 bus_space_handle_t h = fdc->sc_handle; 1120 1121 if ((fdc->sc_flags & FDC_82077) != 0) { 1122 bus_space_write_1(t, h, fdc->sc_reg_dor, 1123 FDO_FDMAEN | FDO_MOEN(0)); 1124 } 1125 1126 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1127 delay(10); 1128 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1129 1130 if ((fdc->sc_flags & FDC_82077) != 0) { 1131 bus_space_write_1(t, h, fdc->sc_reg_dor, 1132 FDO_FRST | FDO_FDMAEN | FDO_DS); 1133 } 1134 #ifdef FD_DEBUG 1135 if (fdc_debug) 1136 printf("fdc reset\n"); 1137 #endif 1138 } 1139 1140 void 1141 fd_set_motor(struct fdc_softc *fdc) 1142 { 1143 struct fd_softc *fd; 1144 u_char status; 1145 int n; 1146 1147 if ((fdc->sc_flags & FDC_82077) != 0) { 1148 status = FDO_FRST | FDO_FDMAEN; 1149 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1150 status |= fd->sc_drive; 1151 1152 for (n = 0; n < 4; n++) 1153 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1154 status |= FDO_MOEN(n); 1155 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1156 fdc->sc_reg_dor, status); 1157 #ifdef SUN4 1158 } else { 1159 1160 for (n = 0; n < 4; n++) { 1161 if ((fd = fdc->sc_fd[n]) != NULL && 1162 (fd->sc_flags & FD_MOTOR) != 0) { 1163 auxregbisc(AUXIO4C_FDS, 0); 1164 return; 1165 } 1166 } 1167 auxregbisc(0, AUXIO4C_FDS); 1168 #endif 1169 } 1170 } 1171 1172 void 1173 fd_motor_off(void *arg) 1174 { 1175 struct fd_softc *fd = arg; 1176 int s; 1177 1178 s = splbio(); 1179 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1180 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1181 splx(s); 1182 } 1183 1184 void 1185 fd_motor_on(void *arg) 1186 { 1187 struct fd_softc *fd = arg; 1188 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1189 int s; 1190 1191 s = splbio(); 1192 fd->sc_flags &= ~FD_MOTOR_WAIT; 1193 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1194 (void) fdcstate(fdc); 1195 splx(s); 1196 } 1197 1198 /* 1199 * Get status bytes off the FDC after a command has finished 1200 * Returns the number of status bytes read; -1 on error. 1201 * The return value is also stored in `sc_nstat'. 1202 */ 1203 int 1204 fdcresult(struct fdc_softc *fdc) 1205 { 1206 bus_space_tag_t t = fdc->sc_bustag; 1207 bus_space_handle_t h = fdc->sc_handle; 1208 int j, n = 0; 1209 1210 for (j = 10000; j; j--) { 1211 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1212 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1213 if (v == NE7_RQM) 1214 return fdc->sc_nstat = n; 1215 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1216 if (n >= sizeof(fdc->sc_status)) { 1217 log(LOG_ERR, "fdcresult: overrun\n"); 1218 return -1; 1219 } 1220 fdc->sc_status[n++] = 1221 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1222 } else 1223 delay(1); 1224 } 1225 1226 log(LOG_ERR, "fdcresult: timeout\n"); 1227 return fdc->sc_nstat = -1; 1228 } 1229 1230 /* 1231 * Write a command byte to the FDC. 1232 * Returns 0 on success; -1 on failure (i.e. timeout) 1233 */ 1234 int 1235 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1236 { 1237 bus_space_tag_t t = fdc->sc_bustag; 1238 bus_space_handle_t h = fdc->sc_handle; 1239 int i; 1240 1241 for (i = 100000; i-- > 0;) { 1242 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1243 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1244 /* The chip is ready */ 1245 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1246 return 0; 1247 } 1248 delay(1); 1249 } 1250 return -1; 1251 } 1252 1253 int 1254 fdc_diskchange(struct fdc_softc *fdc) 1255 { 1256 1257 #ifdef SUN4 1258 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1259 #endif 1260 bus_space_tag_t t = fdc->sc_bustag; 1261 bus_space_handle_t h = fdc->sc_handle; 1262 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1263 return (v & FDI_DCHG) != 0; 1264 #ifdef SUN4 1265 } else if (CPU_ISSUN4C) { 1266 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1267 } 1268 return 0; 1269 #endif 1270 } 1271 1272 int 1273 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1274 { 1275 int unit, pmask; 1276 struct fd_softc *fd; 1277 struct fd_type *type; 1278 1279 unit = FDUNIT(dev); 1280 if (unit >= fd_cd.cd_ndevs) 1281 return ENXIO; 1282 fd = fd_cd.cd_devs[unit]; 1283 if (fd == NULL) 1284 return ENXIO; 1285 type = fd_dev_to_type(fd, dev); 1286 if (type == NULL) 1287 return ENXIO; 1288 1289 if ((fd->sc_flags & FD_OPEN) != 0 && 1290 fd->sc_type != type) 1291 return EBUSY; 1292 1293 fd->sc_type = type; 1294 fd->sc_cylin = -1; 1295 fd->sc_flags |= FD_OPEN; 1296 1297 /* 1298 * Only update the disklabel if we're not open anywhere else. 1299 */ 1300 if (fd->sc_dk.dk_openmask == 0) 1301 fdgetdisklabel(dev); 1302 1303 pmask = (1 << DISKPART(dev)); 1304 1305 switch (fmt) { 1306 case S_IFCHR: 1307 fd->sc_dk.dk_copenmask |= pmask; 1308 break; 1309 1310 case S_IFBLK: 1311 fd->sc_dk.dk_bopenmask |= pmask; 1312 break; 1313 } 1314 fd->sc_dk.dk_openmask = 1315 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1316 1317 return 0; 1318 } 1319 1320 int 1321 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1322 { 1323 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1324 int pmask = (1 << DISKPART(dev)); 1325 1326 fd->sc_flags &= ~FD_OPEN; 1327 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1328 1329 switch (fmt) { 1330 case S_IFCHR: 1331 fd->sc_dk.dk_copenmask &= ~pmask; 1332 break; 1333 1334 case S_IFBLK: 1335 fd->sc_dk.dk_bopenmask &= ~pmask; 1336 break; 1337 } 1338 fd->sc_dk.dk_openmask = 1339 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1340 1341 return 0; 1342 } 1343 1344 int 1345 fdread(dev_t dev, struct uio *uio, int flag) 1346 { 1347 1348 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1349 } 1350 1351 int 1352 fdwrite(dev_t dev, struct uio *uio, int flag) 1353 { 1354 1355 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1356 } 1357 1358 void 1359 fdcstart(struct fdc_softc *fdc) 1360 { 1361 1362 #ifdef DIAGNOSTIC 1363 /* only got here if controller's drive queue was inactive; should 1364 be in idle state */ 1365 if (fdc->sc_state != DEVIDLE) { 1366 printf("fdcstart: not idle\n"); 1367 return; 1368 } 1369 #endif 1370 (void)fdcstate(fdc); 1371 } 1372 1373 void 1374 fdcstatus(struct fdc_softc *fdc, const char *s) 1375 { 1376 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1377 int n; 1378 char bits[64]; 1379 1380 /* Just print last status */ 1381 n = fdc->sc_nstat; 1382 1383 #if 0 1384 /* 1385 * A 82072 seems to return <invalid command> on 1386 * gratuitous Sense Interrupt commands. 1387 */ 1388 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1389 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1390 (void)fdcresult(fdc); 1391 n = 2; 1392 } 1393 #endif 1394 1395 printf("%s: %s: state %d", 1396 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1397 1398 switch (n) { 1399 case 0: 1400 printf("\n"); 1401 break; 1402 case 2: 1403 printf(" (st0 %s cyl %d)\n", 1404 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1405 bits, sizeof(bits)), fdc->sc_status[1]); 1406 break; 1407 case 7: 1408 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1409 NE7_ST0BITS, bits, sizeof(bits))); 1410 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1411 NE7_ST1BITS, bits, sizeof(bits))); 1412 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1413 NE7_ST2BITS, bits, sizeof(bits))); 1414 printf(" cyl %d head %d sec %d)\n", 1415 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1416 break; 1417 #ifdef DIAGNOSTIC 1418 default: 1419 printf(" fdcstatus: weird size: %d\n", n); 1420 break; 1421 #endif 1422 } 1423 } 1424 1425 void 1426 fdctimeout(void *arg) 1427 { 1428 struct fdc_softc *fdc = arg; 1429 struct fd_softc *fd; 1430 int s; 1431 1432 s = splbio(); 1433 fd = fdc->sc_drives.tqh_first; 1434 if (fd == NULL) { 1435 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1436 fdc->sc_dev.dv_xname, 1437 fdc->sc_state, fdc->sc_istatus); 1438 fdc->sc_state = DEVIDLE; 1439 goto out; 1440 } 1441 1442 if (BUFQ_PEEK(fd->sc_q) != NULL) 1443 fdc->sc_state++; 1444 else 1445 fdc->sc_state = DEVIDLE; 1446 1447 (void)fdcstate(fdc); 1448 out: 1449 splx(s); 1450 1451 } 1452 1453 void 1454 fdcpseudointr(void *arg) 1455 { 1456 struct fdc_softc *fdc = arg; 1457 int s; 1458 1459 /* Just ensure it has the right spl. */ 1460 s = splbio(); 1461 (void)fdcstate(fdc); 1462 splx(s); 1463 } 1464 1465 1466 /* 1467 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1468 * handler is available. Unfortunately, we have no reliable way to 1469 * determine that the interrupt really came from the floppy controller; 1470 * just hope that the other devices that share this interrupt level 1471 * can do better.. 1472 */ 1473 int 1474 fdc_c_hwintr(void *arg) 1475 { 1476 struct fdc_softc *fdc = arg; 1477 bus_space_tag_t t = fdc->sc_bustag; 1478 bus_space_handle_t h = fdc->sc_handle; 1479 1480 switch (fdc->sc_itask) { 1481 case FDC_ITASK_NONE: 1482 return 0; 1483 case FDC_ITASK_SENSEI: 1484 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1485 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1486 else 1487 fdc->sc_istatus = FDC_ISTATUS_DONE; 1488 softintr_schedule(fdc->sc_sicookie); 1489 return 1; 1490 case FDC_ITASK_RESULT: 1491 if (fdcresult(fdc) == -1) 1492 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1493 else 1494 fdc->sc_istatus = FDC_ISTATUS_DONE; 1495 softintr_schedule(fdc->sc_sicookie); 1496 return 1; 1497 case FDC_ITASK_DMA: 1498 /* Proceed with pseudo-DMA below */ 1499 break; 1500 default: 1501 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1502 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1503 softintr_schedule(fdc->sc_sicookie); 1504 return 1; 1505 } 1506 1507 /* 1508 * Pseudo DMA in progress 1509 */ 1510 for (;;) { 1511 uint8_t msr; 1512 1513 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1514 1515 if ((msr & NE7_RQM) == 0) 1516 /* That's all this round */ 1517 break; 1518 1519 if ((msr & NE7_NDM) == 0) { 1520 fdcresult(fdc); 1521 fdc->sc_istatus = FDC_ISTATUS_DONE; 1522 softintr_schedule(fdc->sc_sicookie); 1523 #ifdef FD_DEBUG 1524 if (fdc_debug > 1) 1525 #ifdef SUN4 1526 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1527 #elif SUN4U 1528 printf("fdc: overrun: msr = %x, tc = %d\n", 1529 msr, fdc->sc_tc); 1530 #endif 1531 #endif 1532 break; 1533 } 1534 1535 /* Another byte can be transferred */ 1536 if ((msr & NE7_DIO) != 0) 1537 *fdc->sc_data = 1538 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1539 else 1540 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1541 *fdc->sc_data); 1542 1543 fdc->sc_data++; 1544 if (--fdc->sc_tc == 0) { 1545 fdc->sc_istatus = FDC_ISTATUS_DONE; 1546 FTC_FLIP; 1547 fdcresult(fdc); 1548 softintr_schedule(fdc->sc_sicookie); 1549 break; 1550 } 1551 } 1552 return 1; 1553 } 1554 1555 void 1556 fdcswintr(void *arg) 1557 { 1558 struct fdc_softc *fdc = arg; 1559 1560 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1561 /* This (software) interrupt is not for us */ 1562 return; 1563 1564 switch (fdc->sc_istatus) { 1565 case FDC_ISTATUS_ERROR: 1566 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1567 break; 1568 case FDC_ISTATUS_SPURIOUS: 1569 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1570 break; 1571 } 1572 1573 fdcstate(fdc); 1574 return; 1575 } 1576 1577 int 1578 fdcstate(struct fdc_softc *fdc) 1579 { 1580 1581 #define st0 fdc->sc_status[0] 1582 #define st1 fdc->sc_status[1] 1583 #define cyl fdc->sc_status[1] 1584 #define FDC_WRFIFO(fdc, c) do { \ 1585 if (fdc_wrfifo(fdc, (c))) { \ 1586 goto xxx; \ 1587 } \ 1588 } while(0) 1589 1590 struct fd_softc *fd; 1591 struct buf *bp; 1592 int read, head, sec, nblks; 1593 struct fd_type *type; 1594 struct ne7_fd_formb *finfo = NULL; 1595 1596 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1597 /* Prevent loop if the reset sequence produces errors */ 1598 if (fdc->sc_state != RESETCOMPLETE && 1599 fdc->sc_state != RECALWAIT && 1600 fdc->sc_state != RECALCOMPLETE) 1601 fdc->sc_state = DORESET; 1602 } 1603 1604 /* Clear I task/status field */ 1605 fdc->sc_istatus = FDC_ISTATUS_NONE; 1606 fdc->sc_itask = FDC_ITASK_NONE; 1607 1608 loop: 1609 /* Is there a drive for the controller to do a transfer with? */ 1610 fd = fdc->sc_drives.tqh_first; 1611 if (fd == NULL) { 1612 fdc->sc_state = DEVIDLE; 1613 return 0; 1614 } 1615 1616 /* Is there a transfer to this drive? If not, deactivate drive. */ 1617 bp = BUFQ_PEEK(fd->sc_q); 1618 if (bp == NULL) { 1619 fd->sc_ops = 0; 1620 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1621 fd->sc_active = 0; 1622 goto loop; 1623 } 1624 1625 if (bp->b_flags & B_FORMAT) 1626 finfo = (struct ne7_fd_formb *)bp->b_data; 1627 1628 switch (fdc->sc_state) { 1629 case DEVIDLE: 1630 fdc->sc_errors = 0; 1631 fd->sc_skip = 0; 1632 fd->sc_bcount = bp->b_bcount; 1633 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1634 callout_stop(&fd->sc_motoroff_ch); 1635 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1636 fdc->sc_state = MOTORWAIT; 1637 return 1; 1638 } 1639 if ((fd->sc_flags & FD_MOTOR) == 0) { 1640 /* Turn on the motor, being careful about pairing. */ 1641 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1642 if (ofd && ofd->sc_flags & FD_MOTOR) { 1643 callout_stop(&ofd->sc_motoroff_ch); 1644 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1645 } 1646 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1647 fd_set_motor(fdc); 1648 fdc->sc_state = MOTORWAIT; 1649 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1650 /* Allow .25s for motor to stabilize. */ 1651 callout_reset(&fd->sc_motoron_ch, hz / 4, 1652 fd_motor_on, fd); 1653 } else { 1654 fd->sc_flags &= ~FD_MOTOR_WAIT; 1655 goto loop; 1656 } 1657 return 1; 1658 } 1659 /* Make sure the right drive is selected. */ 1660 fd_set_motor(fdc); 1661 1662 if (fdc_diskchange(fdc)) 1663 goto dodskchg; 1664 1665 /*FALLTHROUGH*/ 1666 case DOSEEK: 1667 doseek: 1668 if ((fdc->sc_flags & FDC_EIS) && 1669 (bp->b_flags & B_FORMAT) == 0) { 1670 fd->sc_cylin = bp->b_cylinder; 1671 /* We use implied seek */ 1672 goto doio; 1673 } 1674 1675 if (fd->sc_cylin == bp->b_cylinder) 1676 goto doio; 1677 1678 fd->sc_cylin = -1; 1679 fdc->sc_state = SEEKWAIT; 1680 fdc->sc_nstat = 0; 1681 1682 iostat_seek(fd->sc_dk.dk_stats); 1683 1684 disk_busy(&fd->sc_dk); 1685 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1686 1687 /* specify command */ 1688 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1689 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1690 /* XXX head load time == 6ms */ 1691 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1692 1693 fdc->sc_itask = FDC_ITASK_SENSEI; 1694 /* seek function */ 1695 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1696 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1697 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1698 return 1; 1699 1700 case DODSKCHG: 1701 dodskchg: 1702 /* 1703 * Disk change: force a seek operation by going to cyl 1 1704 * followed by a recalibrate. 1705 */ 1706 disk_busy(&fd->sc_dk); 1707 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1708 fd->sc_cylin = -1; 1709 fdc->sc_nstat = 0; 1710 fdc->sc_state = DSKCHGWAIT; 1711 1712 fdc->sc_itask = FDC_ITASK_SENSEI; 1713 /* seek function */ 1714 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1715 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1716 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1717 return 1; 1718 1719 case DSKCHGWAIT: 1720 callout_stop(&fdc->sc_timo_ch); 1721 disk_unbusy(&fd->sc_dk, 0, 0); 1722 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1723 cyl != 1 * fd->sc_type->step) { 1724 fdcstatus(fdc, "dskchg seek failed"); 1725 fdc->sc_state = DORESET; 1726 } else 1727 fdc->sc_state = DORECAL; 1728 1729 if (fdc_diskchange(fdc)) { 1730 printf("%s: cannot clear disk change status\n", 1731 fdc->sc_dev.dv_xname); 1732 fdc->sc_state = DORESET; 1733 } 1734 goto loop; 1735 1736 case DOIO: 1737 doio: 1738 if (finfo != NULL) 1739 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1740 (char *)finfo; 1741 type = fd->sc_type; 1742 sec = fd->sc_blkno % type->seccyl; 1743 nblks = type->seccyl - sec; 1744 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1745 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1746 fd->sc_nblks = nblks; 1747 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1748 head = sec / type->sectrac; 1749 sec -= head * type->sectrac; 1750 #ifdef DIAGNOSTIC 1751 {int block; 1752 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1753 sec; 1754 if (block != fd->sc_blkno) { 1755 printf("fdcintr: block %d != blkno %d\n", block, 1756 (int)fd->sc_blkno); 1757 #ifdef DDB 1758 Debugger(); 1759 #endif 1760 }} 1761 #endif 1762 read = bp->b_flags & B_READ; 1763 1764 /* Setup for pseudo DMA */ 1765 fdc->sc_data = bp->b_data + fd->sc_skip; 1766 fdc->sc_tc = fd->sc_nbytes; 1767 1768 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1769 fdc->sc_reg_drs, type->rate); 1770 #ifdef FD_DEBUG 1771 if (fdc_debug > 1) 1772 printf("fdcstate: doio: %s drive %d " 1773 "track %d head %d sec %d nblks %d\n", 1774 finfo ? "format" : 1775 (read ? "read" : "write"), 1776 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1777 #endif 1778 fdc->sc_state = IOCOMPLETE; 1779 fdc->sc_itask = FDC_ITASK_DMA; 1780 fdc->sc_nstat = 0; 1781 1782 disk_busy(&fd->sc_dk); 1783 1784 /* allow 3 seconds for operation */ 1785 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1786 1787 if (finfo != NULL) { 1788 /* formatting */ 1789 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1790 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1791 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1792 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1793 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1794 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1795 } else { 1796 if (read) 1797 FDC_WRFIFO(fdc, NE7CMD_READ); 1798 else 1799 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1800 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1801 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1802 FDC_WRFIFO(fdc, head); 1803 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1804 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1805 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1806 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1807 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1808 } 1809 1810 return 1; /* will return later */ 1811 1812 case SEEKWAIT: 1813 callout_stop(&fdc->sc_timo_ch); 1814 fdc->sc_state = SEEKCOMPLETE; 1815 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1816 /* allow 1/50 second for heads to settle */ 1817 callout_reset(&fdc->sc_intr_ch, hz / 50, 1818 fdcpseudointr, fdc); 1819 return 1; /* will return later */ 1820 } 1821 /*FALLTHROUGH*/ 1822 case SEEKCOMPLETE: 1823 /* no data on seek */ 1824 disk_unbusy(&fd->sc_dk, 0, 0); 1825 1826 /* Make sure seek really happened. */ 1827 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1828 cyl != bp->b_cylinder * fd->sc_type->step) { 1829 #ifdef FD_DEBUG 1830 if (fdc_debug) 1831 fdcstatus(fdc, "seek failed"); 1832 #endif 1833 fdcretry(fdc); 1834 goto loop; 1835 } 1836 fd->sc_cylin = bp->b_cylinder; 1837 goto doio; 1838 1839 case IOTIMEDOUT: 1840 /* 1841 * Try to abort the I/O operation without resetting 1842 * the chip first. Poke TC and arrange to pick up 1843 * the timed out I/O command's status. 1844 */ 1845 fdc->sc_itask = FDC_ITASK_RESULT; 1846 fdc->sc_state = IOCLEANUPWAIT; 1847 fdc->sc_nstat = 0; 1848 /* 1/10 second should be enough */ 1849 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1850 FTC_FLIP; 1851 return 1; 1852 1853 case IOCLEANUPTIMEDOUT: 1854 case SEEKTIMEDOUT: 1855 case RECALTIMEDOUT: 1856 case RESETTIMEDOUT: 1857 case DSKCHGTIMEDOUT: 1858 fdcstatus(fdc, "timeout"); 1859 1860 /* All other timeouts always roll through to a chip reset */ 1861 fdcretry(fdc); 1862 1863 /* Force reset, no matter what fdcretry() says */ 1864 fdc->sc_state = DORESET; 1865 goto loop; 1866 1867 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1868 callout_stop(&fdc->sc_timo_ch); 1869 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1870 (bp->b_flags & B_READ)); 1871 fdcretry(fdc); 1872 goto loop; 1873 1874 case IOCOMPLETE: /* IO DONE, post-analyze */ 1875 callout_stop(&fdc->sc_timo_ch); 1876 1877 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1878 (bp->b_flags & B_READ)); 1879 1880 if (fdc->sc_nstat != 7 || st1 != 0 || 1881 ((st0 & 0xf8) != 0 && 1882 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1883 #ifdef FD_DEBUG 1884 if (fdc_debug) { 1885 fdcstatus(fdc, bp->b_flags & B_READ ? 1886 "read failed" : "write failed"); 1887 printf("blkno %lld nblks %d nstat %d tc %d\n", 1888 (long long)fd->sc_blkno, fd->sc_nblks, 1889 fdc->sc_nstat, fdc->sc_tc); 1890 } 1891 #endif 1892 if (fdc->sc_nstat == 7 && 1893 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1894 1895 /* 1896 * Silently retry overruns if no other 1897 * error bit is set. Adjust threshold. 1898 */ 1899 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1900 if (thr < 15) { 1901 thr++; 1902 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1903 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1904 #ifdef FD_DEBUG 1905 if (fdc_debug) 1906 printf("fdc: %d -> threshold\n", 1907 thr); 1908 #endif 1909 fdconf(fdc); 1910 fdc->sc_overruns = 0; 1911 } 1912 if (++fdc->sc_overruns < 3) { 1913 fdc->sc_state = DOIO; 1914 goto loop; 1915 } 1916 } 1917 fdcretry(fdc); 1918 goto loop; 1919 } 1920 if (fdc->sc_errors) { 1921 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1922 fd->sc_skip / FD_BSIZE(fd), 1923 (struct disklabel *)NULL); 1924 printf("\n"); 1925 fdc->sc_errors = 0; 1926 } else { 1927 if (--fdc->sc_overruns < -20) { 1928 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1929 if (thr > 0) { 1930 thr--; 1931 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1932 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1933 #ifdef FD_DEBUG 1934 if (fdc_debug) 1935 printf("fdc: %d -> threshold\n", 1936 thr); 1937 #endif 1938 fdconf(fdc); 1939 } 1940 fdc->sc_overruns = 0; 1941 } 1942 } 1943 fd->sc_blkno += fd->sc_nblks; 1944 fd->sc_skip += fd->sc_nbytes; 1945 fd->sc_bcount -= fd->sc_nbytes; 1946 if (finfo == NULL && fd->sc_bcount > 0) { 1947 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1948 goto doseek; 1949 } 1950 fdfinish(fd, bp); 1951 goto loop; 1952 1953 case DORESET: 1954 /* try a reset, keep motor on */ 1955 fd_set_motor(fdc); 1956 delay(100); 1957 fdc->sc_nstat = 0; 1958 fdc->sc_itask = FDC_ITASK_SENSEI; 1959 fdc->sc_state = RESETCOMPLETE; 1960 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1961 fdc_reset(fdc); 1962 return 1; /* will return later */ 1963 1964 case RESETCOMPLETE: 1965 callout_stop(&fdc->sc_timo_ch); 1966 fdconf(fdc); 1967 1968 /* FALLTHROUGH */ 1969 case DORECAL: 1970 fdc->sc_state = RECALWAIT; 1971 fdc->sc_itask = FDC_ITASK_SENSEI; 1972 fdc->sc_nstat = 0; 1973 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1974 /* recalibrate function */ 1975 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1976 FDC_WRFIFO(fdc, fd->sc_drive); 1977 return 1; /* will return later */ 1978 1979 case RECALWAIT: 1980 callout_stop(&fdc->sc_timo_ch); 1981 fdc->sc_state = RECALCOMPLETE; 1982 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1983 /* allow 1/30 second for heads to settle */ 1984 callout_reset(&fdc->sc_intr_ch, hz / 30, 1985 fdcpseudointr, fdc); 1986 return 1; /* will return later */ 1987 } 1988 1989 case RECALCOMPLETE: 1990 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1991 #ifdef FD_DEBUG 1992 if (fdc_debug) 1993 fdcstatus(fdc, "recalibrate failed"); 1994 #endif 1995 fdcretry(fdc); 1996 goto loop; 1997 } 1998 fd->sc_cylin = 0; 1999 goto doseek; 2000 2001 case MOTORWAIT: 2002 if (fd->sc_flags & FD_MOTOR_WAIT) 2003 return 1; /* time's not up yet */ 2004 goto doseek; 2005 2006 default: 2007 fdcstatus(fdc, "stray interrupt"); 2008 return 1; 2009 } 2010 #ifdef DIAGNOSTIC 2011 panic("fdcintr: impossible"); 2012 #endif 2013 2014 xxx: 2015 /* 2016 * We get here if the chip locks up in FDC_WRFIFO() 2017 * Cancel any operation and schedule a reset 2018 */ 2019 callout_stop(&fdc->sc_timo_ch); 2020 fdcretry(fdc); 2021 fdc->sc_state = DORESET; 2022 goto loop; 2023 2024 #undef st0 2025 #undef st1 2026 #undef cyl 2027 } 2028 2029 void 2030 fdcretry(struct fdc_softc *fdc) 2031 { 2032 struct fd_softc *fd; 2033 struct buf *bp; 2034 int error = EIO; 2035 2036 fd = fdc->sc_drives.tqh_first; 2037 bp = BUFQ_PEEK(fd->sc_q); 2038 2039 fdc->sc_overruns = 0; 2040 if (fd->sc_opts & FDOPT_NORETRY) 2041 goto fail; 2042 2043 switch (fdc->sc_errors) { 2044 case 0: 2045 if (fdc->sc_nstat == 7 && 2046 (fdc->sc_status[0] & 0xd8) == 0x40 && 2047 (fdc->sc_status[1] & 0x2) == 0x2) { 2048 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 2049 error = EROFS; 2050 goto failsilent; 2051 } 2052 /* try again */ 2053 fdc->sc_state = 2054 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2055 break; 2056 2057 case 1: case 2: case 3: 2058 /* didn't work; try recalibrating */ 2059 fdc->sc_state = DORECAL; 2060 break; 2061 2062 case 4: 2063 if (fdc->sc_nstat == 7 && 2064 fdc->sc_status[0] == 0 && 2065 fdc->sc_status[1] == 0 && 2066 fdc->sc_status[2] == 0) { 2067 /* 2068 * We've retried a few times and we've got 2069 * valid status and all three status bytes 2070 * are zero. Assume this condition is the 2071 * result of no disk loaded into the drive. 2072 */ 2073 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 2074 error = ENODEV; 2075 goto failsilent; 2076 } 2077 2078 /* still no go; reset the bastard */ 2079 fdc->sc_state = DORESET; 2080 break; 2081 2082 default: 2083 fail: 2084 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2085 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2086 fd->sc_skip / FD_BSIZE(fd), 2087 (struct disklabel *)NULL); 2088 printf("\n"); 2089 fdcstatus(fdc, "controller status"); 2090 } 2091 2092 failsilent: 2093 bp->b_flags |= B_ERROR; 2094 bp->b_error = error; 2095 fdfinish(fd, bp); 2096 } 2097 fdc->sc_errors++; 2098 } 2099 2100 int 2101 fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l) 2102 { 2103 struct fd_softc *fd; 2104 struct fdc_softc *fdc; 2105 struct fdformat_parms *form_parms; 2106 struct fdformat_cmd *form_cmd; 2107 struct ne7_fd_formb *fd_formb; 2108 int il[FD_MAX_NSEC + 1]; 2109 int unit; 2110 int i, j; 2111 int error; 2112 2113 unit = FDUNIT(dev); 2114 if (unit >= fd_cd.cd_ndevs) 2115 return ENXIO; 2116 2117 fd = fd_cd.cd_devs[FDUNIT(dev)]; 2118 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 2119 2120 switch (cmd) { 2121 case DIOCGDINFO: 2122 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2123 return 0; 2124 2125 case DIOCWLABEL: 2126 if ((flag & FWRITE) == 0) 2127 return EBADF; 2128 /* XXX do something */ 2129 return 0; 2130 2131 case DIOCWDINFO: 2132 if ((flag & FWRITE) == 0) 2133 return EBADF; 2134 2135 error = setdisklabel(fd->sc_dk.dk_label, 2136 (struct disklabel *)addr, 0, 2137 fd->sc_dk.dk_cpulabel); 2138 if (error) 2139 return error; 2140 2141 error = writedisklabel(dev, fdstrategy, 2142 fd->sc_dk.dk_label, 2143 fd->sc_dk.dk_cpulabel); 2144 return error; 2145 2146 case DIOCLOCK: 2147 /* 2148 * Nothing to do here, really. 2149 */ 2150 return 0; 2151 2152 case DIOCEJECT: 2153 if (*(int *)addr == 0) { 2154 int part = DISKPART(dev); 2155 /* 2156 * Don't force eject: check that we are the only 2157 * partition open. If so, unlock it. 2158 */ 2159 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2160 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2161 fd->sc_dk.dk_openmask) { 2162 return EBUSY; 2163 } 2164 } 2165 /* FALLTHROUGH */ 2166 case ODIOCEJECT: 2167 if (fdc->sc_flags & FDC_NOEJECT) 2168 return EINVAL; 2169 fd_do_eject(fd); 2170 return 0; 2171 2172 case FDIOCGETFORMAT: 2173 form_parms = (struct fdformat_parms *)addr; 2174 form_parms->fdformat_version = FDFORMAT_VERSION; 2175 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2176 form_parms->ncyl = fd->sc_type->cylinders; 2177 form_parms->nspt = fd->sc_type->sectrac; 2178 form_parms->ntrk = fd->sc_type->heads; 2179 form_parms->stepspercyl = fd->sc_type->step; 2180 form_parms->gaplen = fd->sc_type->gap2; 2181 form_parms->fillbyte = fd->sc_type->fillbyte; 2182 form_parms->interleave = fd->sc_type->interleave; 2183 switch (fd->sc_type->rate) { 2184 case FDC_500KBPS: 2185 form_parms->xfer_rate = 500 * 1024; 2186 break; 2187 case FDC_300KBPS: 2188 form_parms->xfer_rate = 300 * 1024; 2189 break; 2190 case FDC_250KBPS: 2191 form_parms->xfer_rate = 250 * 1024; 2192 break; 2193 default: 2194 return EINVAL; 2195 } 2196 return 0; 2197 2198 case FDIOCSETFORMAT: 2199 if ((flag & FWRITE) == 0) 2200 return EBADF; /* must be opened for writing */ 2201 2202 form_parms = (struct fdformat_parms *)addr; 2203 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2204 return EINVAL;/* wrong version of formatting prog */ 2205 2206 i = form_parms->nbps >> 7; 2207 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2208 i & ~(1 << (ffs(i)-1))) 2209 /* not a power-of-two multiple of 128 */ 2210 return EINVAL; 2211 2212 switch (form_parms->xfer_rate) { 2213 case 500 * 1024: 2214 fd->sc_type->rate = FDC_500KBPS; 2215 break; 2216 case 300 * 1024: 2217 fd->sc_type->rate = FDC_300KBPS; 2218 break; 2219 case 250 * 1024: 2220 fd->sc_type->rate = FDC_250KBPS; 2221 break; 2222 default: 2223 return EINVAL; 2224 } 2225 2226 if (form_parms->nspt > FD_MAX_NSEC || 2227 form_parms->fillbyte > 0xff || 2228 form_parms->interleave > 0xff) 2229 return EINVAL; 2230 fd->sc_type->sectrac = form_parms->nspt; 2231 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2232 return EINVAL; 2233 fd->sc_type->heads = form_parms->ntrk; 2234 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2235 fd->sc_type->secsize = ffs(i)-1; 2236 fd->sc_type->gap2 = form_parms->gaplen; 2237 fd->sc_type->cylinders = form_parms->ncyl; 2238 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2239 form_parms->nbps / DEV_BSIZE; 2240 fd->sc_type->step = form_parms->stepspercyl; 2241 fd->sc_type->fillbyte = form_parms->fillbyte; 2242 fd->sc_type->interleave = form_parms->interleave; 2243 return 0; 2244 2245 case FDIOCFORMAT_TRACK: 2246 if((flag & FWRITE) == 0) 2247 /* must be opened for writing */ 2248 return EBADF; 2249 form_cmd = (struct fdformat_cmd *)addr; 2250 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2251 /* wrong version of formatting prog */ 2252 return EINVAL; 2253 2254 if (form_cmd->head >= fd->sc_type->heads || 2255 form_cmd->cylinder >= fd->sc_type->cylinders) { 2256 return EINVAL; 2257 } 2258 2259 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2260 M_TEMP, M_NOWAIT); 2261 if (fd_formb == 0) 2262 return ENOMEM; 2263 2264 fd_formb->head = form_cmd->head; 2265 fd_formb->cyl = form_cmd->cylinder; 2266 fd_formb->transfer_rate = fd->sc_type->rate; 2267 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2268 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2269 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2270 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2271 2272 bzero(il, sizeof il); 2273 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2274 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2275 j++; 2276 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2277 j += fd->sc_type->interleave; 2278 } 2279 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2280 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2281 fd_formb->fd_formb_headno(i) = form_cmd->head; 2282 fd_formb->fd_formb_secno(i) = il[i + 1]; 2283 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2284 } 2285 2286 error = fdformat(dev, fd_formb, l->l_proc); 2287 free(fd_formb, M_TEMP); 2288 return error; 2289 2290 case FDIOCGETOPTS: /* get drive options */ 2291 *(int *)addr = fd->sc_opts; 2292 return 0; 2293 2294 case FDIOCSETOPTS: /* set drive options */ 2295 fd->sc_opts = *(int *)addr; 2296 return 0; 2297 2298 #ifdef FD_DEBUG 2299 case _IO('f', 100): 2300 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2301 fdcresult(fdc); 2302 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2303 for (i = 0; i < fdc->sc_nstat; i++) 2304 printf(" 0x%x", fdc->sc_status[i]); 2305 printf(">\n"); 2306 return 0; 2307 2308 case _IOW('f', 101, int): 2309 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2310 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2311 fdconf(fdc); 2312 return 0; 2313 2314 case _IO('f', 102): 2315 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2316 fdcresult(fdc); 2317 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2318 for (i=0; i< fdc->sc_nstat; i++) 2319 printf(" 0x%x", fdc->sc_status[i]); 2320 printf(">\n"); 2321 return 0; 2322 #endif 2323 default: 2324 return ENOTTY; 2325 } 2326 2327 #ifdef DIAGNOSTIC 2328 panic("fdioctl: impossible"); 2329 #endif 2330 } 2331 2332 int 2333 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2334 { 2335 int rv = 0; 2336 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2337 struct fd_type *type = fd->sc_type; 2338 struct buf *bp; 2339 2340 /* set up a buffer header for fdstrategy() */ 2341 bp = getiobuf_nowait(); 2342 if (bp == NULL) 2343 return ENOBUFS; 2344 2345 bp->b_vp = NULL; 2346 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2347 bp->b_proc = p; 2348 bp->b_dev = dev; 2349 2350 /* 2351 * Calculate a fake blkno, so fdstrategy() would initiate a 2352 * seek to the requested cylinder. 2353 */ 2354 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2355 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2356 / DEV_BSIZE; 2357 2358 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2359 bp->b_data = (caddr_t)finfo; 2360 2361 #ifdef FD_DEBUG 2362 if (fdc_debug) { 2363 int i; 2364 2365 printf("fdformat: blkno 0x%llx count %d\n", 2366 (unsigned long long)bp->b_blkno, bp->b_bcount); 2367 2368 printf("\tcyl:\t%d\n", finfo->cyl); 2369 printf("\thead:\t%d\n", finfo->head); 2370 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2371 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2372 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2373 printf("\ttrack data:"); 2374 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2375 printf(" [c%d h%d s%d]", 2376 finfo->fd_formb_cylno(i), 2377 finfo->fd_formb_headno(i), 2378 finfo->fd_formb_secno(i) ); 2379 if (finfo->fd_formb_secsize(i) != 2) 2380 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2381 } 2382 printf("\n"); 2383 } 2384 #endif 2385 2386 /* now do the format */ 2387 fdstrategy(bp); 2388 2389 /* ...and wait for it to complete */ 2390 rv = biowait(bp); 2391 putiobuf(bp); 2392 return rv; 2393 } 2394 2395 void 2396 fdgetdisklabel(dev_t dev) 2397 { 2398 int unit = FDUNIT(dev), i; 2399 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2400 struct disklabel *lp = fd->sc_dk.dk_label; 2401 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2402 2403 bzero(lp, sizeof(struct disklabel)); 2404 bzero(lp, sizeof(struct cpu_disklabel)); 2405 2406 lp->d_type = DTYPE_FLOPPY; 2407 lp->d_secsize = FD_BSIZE(fd); 2408 lp->d_secpercyl = fd->sc_type->seccyl; 2409 lp->d_nsectors = fd->sc_type->sectrac; 2410 lp->d_ncylinders = fd->sc_type->cylinders; 2411 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2412 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2413 lp->d_rpm = 300; /* XXX like it matters... */ 2414 2415 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2416 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2417 lp->d_interleave = 1; 2418 lp->d_flags = D_REMOVABLE; 2419 2420 lp->d_partitions[RAW_PART].p_offset = 0; 2421 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2422 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2423 lp->d_npartitions = RAW_PART + 1; 2424 2425 lp->d_magic = DISKMAGIC; 2426 lp->d_magic2 = DISKMAGIC; 2427 lp->d_checksum = dkcksum(lp); 2428 2429 /* 2430 * Call the generic disklabel extraction routine. If there's 2431 * not a label there, fake it. 2432 */ 2433 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2434 strncpy(lp->d_packname, "default label", 2435 sizeof(lp->d_packname)); 2436 /* 2437 * Reset the partition info; it might have gotten 2438 * trashed in readdisklabel(). 2439 * 2440 * XXX Why do we have to do this? readdisklabel() 2441 * should be safe... 2442 */ 2443 for (i = 0; i < MAXPARTITIONS; ++i) { 2444 lp->d_partitions[i].p_offset = 0; 2445 if (i == RAW_PART) { 2446 lp->d_partitions[i].p_size = 2447 lp->d_secpercyl * lp->d_ncylinders; 2448 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2449 } else { 2450 lp->d_partitions[i].p_size = 0; 2451 lp->d_partitions[i].p_fstype = FS_UNUSED; 2452 } 2453 } 2454 lp->d_npartitions = RAW_PART + 1; 2455 } 2456 } 2457 2458 void 2459 fd_do_eject(struct fd_softc *fd) 2460 { 2461 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2462 2463 #ifdef SUN4 2464 if (CPU_ISSUN4C) { 2465 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2466 delay(10); 2467 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2468 return; 2469 } 2470 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2471 #endif 2472 bus_space_tag_t t = fdc->sc_bustag; 2473 bus_space_handle_t h = fdc->sc_handle; 2474 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2475 2476 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2477 delay(10); 2478 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2479 return; 2480 #ifdef SUN4 2481 } 2482 #endif 2483 } 2484 2485 /* ARGSUSED */ 2486 void 2487 fd_mountroot_hook(struct device *dev) 2488 { 2489 int c; 2490 2491 fd_do_eject((struct fd_softc *)dev); 2492 printf("Insert filesystem floppy and press return."); 2493 for (;;) { 2494 c = cngetc(); 2495 if ((c == '\r') || (c == '\n')) { 2496 printf("\n"); 2497 break; 2498 } 2499 } 2500 } 2501 2502 #ifdef MEMORY_DISK_HOOKS 2503 2504 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2505 2506 int 2507 fd_read_md_image(size_t *sizep, caddr_t *addrp) 2508 { 2509 struct buf buf, *bp = &buf; 2510 dev_t dev; 2511 off_t offset; 2512 caddr_t addr; 2513 2514 dev = makedev(54,0); /* XXX */ 2515 2516 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2517 *addrp = addr; 2518 2519 if (fdopen(dev, 0, S_IFCHR, NULL)) 2520 panic("fd: mountroot: fdopen"); 2521 2522 offset = 0; 2523 2524 for (;;) { 2525 bp->b_dev = dev; 2526 bp->b_error = 0; 2527 bp->b_resid = 0; 2528 bp->b_proc = NULL; 2529 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2530 bp->b_blkno = btodb(offset); 2531 bp->b_bcount = DEV_BSIZE; 2532 bp->b_data = addr; 2533 fdstrategy(bp); 2534 while ((bp->b_flags & B_DONE) == 0) { 2535 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2536 } 2537 if (bp->b_error) 2538 panic("fd: mountroot: fdread error %d", bp->b_error); 2539 2540 if (bp->b_resid != 0) 2541 break; 2542 2543 addr += DEV_BSIZE; 2544 offset += DEV_BSIZE; 2545 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2546 break; 2547 } 2548 (void)fdclose(dev, 0, S_IFCHR, NULL); 2549 *sizep = offset; 2550 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2551 return 0; 2552 } 2553 #endif /* MEMORY_DISK_HOOKS */ 2554
Indexes created Mon Sep 29 21:09:56 GMT 2025