fdc.c revision 1.9
1 /* $NetBSD: fdc.c,v 1.9 2007/03/09 21:02:30 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 1.9 2007/03/09 21:02:30 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 #include <prop/proplib.h> 158 159 #define FDUNIT(dev) (minor(dev) / 8) 160 #define FDTYPE(dev) (minor(dev) % 8) 161 162 #ifdef SUN4U 163 #define FTC_FLIP \ 164 do { \ 165 auxio_fd_control(AUXIO_LED_FTC); \ 166 auxio_fd_control(0); \ 167 } while (0) 168 #else 169 #define FTC_FLIP 170 #endif 171 172 /* (mis)use device use flag to identify format operation */ 173 #define B_FORMAT B_DEVPRIVATE 174 175 #define FD_DEBUG 176 #ifdef FD_DEBUG 177 int fdc_debug = 0; 178 #endif 179 180 enum fdc_state { 181 DEVIDLE = 0, 182 MOTORWAIT, /* 1 */ 183 DOSEEK, /* 2 */ 184 SEEKWAIT, /* 3 */ 185 SEEKTIMEDOUT, /* 4 */ 186 SEEKCOMPLETE, /* 5 */ 187 DOIO, /* 6 */ 188 IOCOMPLETE, /* 7 */ 189 IOTIMEDOUT, /* 8 */ 190 IOCLEANUPWAIT, /* 9 */ 191 IOCLEANUPTIMEDOUT,/*10 */ 192 DORESET, /* 11 */ 193 RESETCOMPLETE, /* 12 */ 194 RESETTIMEDOUT, /* 13 */ 195 DORECAL, /* 14 */ 196 RECALWAIT, /* 15 */ 197 RECALTIMEDOUT, /* 16 */ 198 RECALCOMPLETE, /* 17 */ 199 DODSKCHG, /* 18 */ 200 DSKCHGWAIT, /* 19 */ 201 DSKCHGTIMEDOUT, /* 20 */ 202 }; 203 204 /* software state, per controller */ 205 struct fdc_softc { 206 struct device sc_dev; /* boilerplate */ 207 bus_space_tag_t sc_bustag; 208 209 struct callout sc_timo_ch; /* timeout callout */ 210 struct callout sc_intr_ch; /* pseudo-intr callout */ 211 212 struct fd_softc *sc_fd[4]; /* pointers to children */ 213 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 214 enum fdc_state sc_state; 215 int sc_flags; 216 #define FDC_82077 0x01 217 #define FDC_NEEDHEADSETTLE 0x02 218 #define FDC_EIS 0x04 219 #define FDC_NEEDMOTORWAIT 0x08 220 #define FDC_NOEJECT 0x10 221 #define FDC_EBUS 0x20 222 int sc_errors; /* number of retries so far */ 223 int sc_overruns; /* number of DMA overruns */ 224 int sc_cfg; /* current configuration */ 225 struct fdcio sc_io; 226 #define sc_handle sc_io.fdcio_handle 227 #define sc_reg_msr sc_io.fdcio_reg_msr 228 #define sc_reg_fifo sc_io.fdcio_reg_fifo 229 #define sc_reg_dor sc_io.fdcio_reg_dor 230 #define sc_reg_dir sc_io.fdcio_reg_dir 231 #define sc_reg_drs sc_io.fdcio_reg_msr 232 #define sc_itask sc_io.fdcio_itask 233 #define sc_istatus sc_io.fdcio_istatus 234 #define sc_data sc_io.fdcio_data 235 #define sc_tc sc_io.fdcio_tc 236 #define sc_nstat sc_io.fdcio_nstat 237 #define sc_status sc_io.fdcio_status 238 #define sc_intrcnt sc_io.fdcio_intrcnt 239 240 void *sc_sicookie; /* softintr(9) cookie */ 241 }; 242 243 #ifdef SUN4 244 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 245 #endif 246 247 /* controller driver configuration */ 248 #ifdef SUN4 249 int fdcmatch_mainbus(struct device *, struct cfdata *, void*); 250 int fdcmatch_obio(struct device *, struct cfdata *, void *); 251 void fdcattach_mainbus(struct device *, struct device *, void *); 252 void fdcattach_obio(struct device *, struct device *, void *); 253 #elif SUN4U 254 int fdcmatch_sbus(struct device *, struct cfdata *, void *); 255 int fdcmatch_ebus(struct device *, struct cfdata *, void *); 256 void fdcattach_sbus(struct device *, struct device *, void *); 257 void fdcattach_ebus(struct device *, struct device *, void *); 258 #endif 259 260 int fdcattach(struct fdc_softc *, int); 261 262 #ifdef SUN4 263 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 264 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 265 266 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 267 fdcmatch_obio, fdcattach_obio, NULL, NULL); 268 #elif SUN4U 269 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc), 270 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 271 272 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc), 273 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 274 #endif 275 276 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 277 278 /* 279 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 280 * we tell them apart. 281 */ 282 struct fd_type { 283 int sectrac; /* sectors per track */ 284 int heads; /* number of heads */ 285 int seccyl; /* sectors per cylinder */ 286 int secsize; /* size code for sectors */ 287 int datalen; /* data len when secsize = 0 */ 288 int steprate; /* step rate and head unload time */ 289 int gap1; /* gap len between sectors */ 290 int gap2; /* formatting gap */ 291 int cylinders; /* total num of cylinders */ 292 int size; /* size of disk in sectors */ 293 int step; /* steps per cylinder */ 294 int rate; /* transfer speed code */ 295 int fillbyte; /* format fill byte */ 296 int interleave; /* interleave factor (formatting) */ 297 const char *name; 298 }; 299 300 /* The order of entries in the following table is important -- BEWARE! */ 301 struct fd_type fd_types[] = { 302 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 303 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 304 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 305 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 306 }; 307 308 /* software state, per disk (with up to 4 disks per ctlr) */ 309 struct fd_softc { 310 struct device sc_dv; /* generic device info */ 311 struct disk sc_dk; /* generic disk info */ 312 313 struct fd_type *sc_deftype; /* default type descriptor */ 314 struct fd_type *sc_type; /* current type descriptor */ 315 316 struct callout sc_motoron_ch; 317 struct callout sc_motoroff_ch; 318 319 daddr_t sc_blkno; /* starting block number */ 320 int sc_bcount; /* byte count left */ 321 int sc_skip; /* bytes already transferred */ 322 int sc_nblks; /* number of blocks currently transferring */ 323 int sc_nbytes; /* number of bytes currently transferring */ 324 325 int sc_drive; /* physical unit number */ 326 int sc_flags; 327 #define FD_OPEN 0x01 /* it's open */ 328 #define FD_MOTOR 0x02 /* motor should be on */ 329 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 330 int sc_cylin; /* where we think the head is */ 331 int sc_opts; /* user-set options */ 332 333 void *sc_sdhook; /* shutdownhook cookie */ 334 335 TAILQ_ENTRY(fd_softc) sc_drivechain; 336 int sc_ops; /* I/O ops since last switch */ 337 struct bufq_state *sc_q;/* pending I/O requests */ 338 int sc_active; /* number of active I/O requests */ 339 }; 340 341 /* floppy driver configuration */ 342 int fdmatch(struct device *, struct cfdata *, void *); 343 void fdattach(struct device *, struct device *, void *); 344 345 CFATTACH_DECL(fd, sizeof(struct fd_softc), 346 fdmatch, fdattach, NULL, NULL); 347 348 extern struct cfdriver fd_cd; 349 350 dev_type_open(fdopen); 351 dev_type_close(fdclose); 352 dev_type_read(fdread); 353 dev_type_write(fdwrite); 354 dev_type_ioctl(fdioctl); 355 dev_type_strategy(fdstrategy); 356 357 const struct bdevsw fd_bdevsw = { 358 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 359 }; 360 361 const struct cdevsw fd_cdevsw = { 362 fdopen, fdclose, fdread, fdwrite, fdioctl, 363 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 364 }; 365 366 void fdgetdisklabel(dev_t); 367 int fd_get_parms(struct fd_softc *); 368 void fdstrategy(struct buf *); 369 void fdstart(struct fd_softc *); 370 int fdprint(void *, const char *); 371 372 struct dkdriver fddkdriver = { fdstrategy, NULL }; 373 374 struct fd_type *fd_nvtotype(char *, int, int); 375 void fd_set_motor(struct fdc_softc *); 376 void fd_motor_off(void *); 377 void fd_motor_on(void *); 378 int fdcresult(struct fdc_softc *); 379 int fdc_wrfifo(struct fdc_softc *, uint8_t); 380 void fdcstart(struct fdc_softc *); 381 void fdcstatus(struct fdc_softc *, const char *); 382 void fdc_reset(struct fdc_softc *); 383 int fdc_diskchange(struct fdc_softc *); 384 void fdctimeout(void *); 385 void fdcpseudointr(void *); 386 int fdc_c_hwintr(void *); 387 void fdchwintr(void); 388 void fdcswintr(void *); 389 int fdcstate(struct fdc_softc *); 390 void fdcretry(struct fdc_softc *); 391 void fdfinish(struct fd_softc *, struct buf *); 392 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 393 void fd_do_eject(struct fd_softc *); 394 void fd_mountroot_hook(struct device *); 395 static int fdconf(struct fdc_softc *); 396 static void establish_chip_type( 397 struct fdc_softc *, 398 bus_space_tag_t, 399 bus_addr_t, 400 bus_size_t, 401 bus_space_handle_t); 402 static void fd_set_properties(struct fd_softc *); 403 404 #ifdef MEMORY_DISK_HOOKS 405 int fd_read_md_image(size_t *, void **); 406 #endif 407 408 #ifdef SUN4 409 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 410 411 int 412 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 413 { 414 struct mainbus_attach_args *ma = aux; 415 416 /* 417 * Floppy controller is on mainbus on sun4c. 418 */ 419 if (!CPU_ISSUN4C) 420 return 0; 421 422 /* sun4c PROMs call the controller "fd" */ 423 if (strcmp("fd", ma->ma_name) != 0) 424 return 0; 425 426 return bus_space_probe(ma->ma_bustag, 427 ma->ma_paddr, 428 1, /* probe size */ 429 0, /* offset */ 430 0, /* flags */ 431 NULL, NULL); 432 } 433 434 int 435 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 436 { 437 union obio_attach_args *uoba = aux; 438 struct sbus_attach_args *sa; 439 440 /* 441 * Floppy controller is on obio on sun4m. 442 */ 443 if (uoba->uoba_isobio4 != 0) 444 return 0; 445 446 sa = &uoba->uoba_sbus; 447 448 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 449 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 450 return 0; 451 452 return bus_space_probe(sa->sa_bustag, 453 sbus_bus_addr(sa->sa_bustag, 454 sa->sa_slot, sa->sa_offset), 455 1, /* probe size */ 456 0, /* offset */ 457 0, /* flags */ 458 NULL, NULL); 459 } 460 461 #elif SUN4U 462 463 int 464 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux) 465 { 466 struct sbus_attach_args *sa = aux; 467 468 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 469 } 470 471 int 472 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux) 473 { 474 struct ebus_attach_args *ea = aux; 475 476 return strcmp("fdthree", ea->ea_name) == 0; 477 } 478 #endif 479 480 static void 481 establish_chip_type(struct fdc_softc *fdc, 482 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 483 bus_space_handle_t handle) 484 { 485 uint8_t v; 486 487 /* 488 * This hack from Chris Torek: apparently DOR really 489 * addresses MSR/DRS on a 82072. 490 * We used to rely on the VERSION command to tell the 491 * difference (which did not work). 492 */ 493 494 /* First, check the size of the register bank */ 495 if (size < 8) 496 /* It isn't a 82077 */ 497 return; 498 499 #ifdef SUN4 500 /* Then probe the DOR register offset */ 501 if (bus_space_probe(tag, addr, 502 1, /* probe size */ 503 FDREG77_DOR, /* offset */ 504 0, /* flags */ 505 NULL, NULL) == 0) { 506 507 /* It isn't a 82077 */ 508 return; 509 } 510 #endif 511 512 v = bus_space_read_1(tag, handle, FDREG77_DOR); 513 if (v == NE7_RQM) { 514 /* 515 * Value in DOR looks like it's really MSR 516 */ 517 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 518 v = bus_space_read_1(tag, handle, FDREG77_DOR); 519 if (v == NE7_RQM) { 520 /* 521 * The value in the DOR didn't stick; 522 * it isn't a 82077 523 */ 524 return; 525 } 526 } 527 528 fdc->sc_flags |= FDC_82077; 529 } 530 531 /* 532 * Arguments passed between fdcattach and fdprobe. 533 */ 534 struct fdc_attach_args { 535 int fa_drive; 536 struct fd_type *fa_deftype; 537 }; 538 539 /* 540 * Print the location of a disk drive (called just before attaching the 541 * the drive). If `fdc' is not NULL, the drive was found but was not 542 * in the system config file; print the drive name as well. 543 * Return QUIET (config_find ignores this if the device was configured) to 544 * avoid printing `fdN not configured' messages. 545 */ 546 int 547 fdprint(void *aux, const char *fdc) 548 { 549 register struct fdc_attach_args *fa = aux; 550 551 if (!fdc) 552 aprint_normal(" drive %d", fa->fa_drive); 553 return QUIET; 554 } 555 556 /* 557 * Configure several parameters and features on the FDC. 558 * Return 0 on success. 559 */ 560 static int 561 fdconf(struct fdc_softc *fdc) 562 { 563 int vroom; 564 565 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 566 return -1; 567 568 /* 569 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 570 * the PROM thinks is appropriate. 571 */ 572 if ((vroom = fdc->sc_status[7]) == 0) 573 vroom = 0x64; 574 575 /* Configure controller to use FIFO and Implied Seek */ 576 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 577 return -1; 578 if (fdc_wrfifo(fdc, vroom) != 0) 579 return -1; 580 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 581 return -1; 582 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 583 return -1; 584 /* No result phase for the NE7CMD_CFG command */ 585 586 if ((fdc->sc_flags & FDC_82077) != 0) { 587 /* Lock configuration across soft resets. */ 588 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 589 fdcresult(fdc) != 1) { 590 #ifdef DEBUG 591 printf("fdconf: CFGLOCK failed"); 592 #endif 593 return -1; 594 } 595 } 596 597 return 0; 598 #if 0 599 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 600 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 601 if (fdc_debug) 602 printf("[version cmd]"); 603 } 604 #endif 605 } 606 607 #ifdef SUN4 608 void 609 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 610 { 611 struct fdc_softc *fdc = (void *)self; 612 struct mainbus_attach_args *ma = aux; 613 614 fdc->sc_bustag = ma->ma_bustag; 615 616 if (bus_space_map( 617 ma->ma_bustag, 618 ma->ma_paddr, 619 ma->ma_size, 620 BUS_SPACE_MAP_LINEAR, 621 &fdc->sc_handle) != 0) { 622 printf("%s: cannot map registers\n", self->dv_xname); 623 return; 624 } 625 626 establish_chip_type(fdc, 627 ma->ma_bustag, 628 ma->ma_paddr, 629 ma->ma_size, 630 fdc->sc_handle); 631 632 if (fdcattach(fdc, ma->ma_pri) != 0) 633 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 634 } 635 636 void 637 fdcattach_obio(struct device *parent, struct device *self, void *aux) 638 { 639 struct fdc_softc *fdc = (void *)self; 640 union obio_attach_args *uoba = aux; 641 struct sbus_attach_args *sa = &uoba->uoba_sbus; 642 643 if (sa->sa_nintr == 0) { 644 printf(": no interrupt line configured\n"); 645 return; 646 } 647 648 fdc->sc_bustag = sa->sa_bustag; 649 650 if (sbus_bus_map(sa->sa_bustag, 651 sa->sa_slot, sa->sa_offset, sa->sa_size, 652 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 653 printf("%s: cannot map control registers\n", 654 self->dv_xname); 655 return; 656 } 657 658 establish_chip_type(fdc, 659 sa->sa_bustag, 660 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 661 sa->sa_size, 662 fdc->sc_handle); 663 664 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 665 print(": no drives attached\n"); 666 return; 667 } 668 669 if (fdcattach(fdc, sa->sa_pri) != 0) 670 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 671 } 672 673 #elif SUN4U 674 675 void 676 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 677 { 678 struct fdc_softc *fdc = (void *)self; 679 struct sbus_attach_args *sa = aux; 680 681 if (sa->sa_nintr == 0) { 682 printf(": no interrupt line configured\n"); 683 return; 684 } 685 686 if (auxio_fd_control(0) != 0) { 687 printf(": can't attach before auxio\n"); 688 return; 689 } 690 691 fdc->sc_bustag = sa->sa_bustag; 692 693 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 694 sa->sa_size, 0, &fdc->sc_handle) != 0) { 695 printf(": cannot map control registers\n"); 696 return; 697 } 698 699 establish_chip_type(fdc, 700 sa->sa_bustag, 701 BUS_ADDR(sa->sa_slot, sa->sa_offset), 702 sa->sa_size, 703 fdc->sc_handle); 704 705 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 706 printf(": no drives attached\n"); 707 return; 708 } 709 710 if (prom_getproplen(sa->sa_node, "manual") >= 0) 711 fdc->sc_flags |= FDC_NOEJECT; 712 713 714 if (fdcattach(fdc, sa->sa_pri) != 0) 715 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 716 } 717 718 void 719 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 720 { 721 struct fdc_softc *fdc = (void *)self; 722 struct ebus_attach_args *ea = aux; 723 int map_vaddr; 724 725 if (ea->ea_nintr == 0) { 726 printf(": no interrupt line configured\n"); 727 return; 728 } 729 730 if (ea->ea_nreg < 3) { 731 printf(": expected 3 registers, only got %d\n", 732 ea->ea_nreg); 733 return; 734 } 735 736 fdc->sc_bustag = ea->ea_bustag; 737 738 if (ea->ea_nvaddr > 0) { 739 sparc_promaddr_to_handle(ea->ea_bustag, 740 ea->ea_vaddr[0], &fdc->sc_handle); 741 map_vaddr = 1; 742 } else if (bus_space_map(fdc->sc_bustag, 743 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 744 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 745 map_vaddr = 0; 746 } else { 747 printf(": can't map control registers\n"); 748 return; 749 } 750 751 establish_chip_type(fdc, 752 fdc->sc_bustag, 753 map_vaddr ? ea->ea_vaddr[0] : 754 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 755 ea->ea_reg[0].size, 756 fdc->sc_handle); 757 758 fdc->sc_flags |= FDC_EBUS; 759 760 if (prom_getproplen(ea->ea_node, "manual") >= 0) 761 fdc->sc_flags |= FDC_NOEJECT; 762 763 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 764 if (map_vaddr == 0) 765 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 766 ea->ea_reg[0].size); 767 } 768 #endif 769 770 int 771 fdcattach(struct fdc_softc *fdc, int pri) 772 { 773 struct fdc_attach_args fa; 774 int drive_attached; 775 char code; 776 777 callout_init(&fdc->sc_timo_ch); 778 callout_init(&fdc->sc_intr_ch); 779 780 fdc->sc_state = DEVIDLE; 781 fdc->sc_itask = FDC_ITASK_NONE; 782 fdc->sc_istatus = FDC_ISTATUS_NONE; 783 fdc->sc_flags |= FDC_EIS; 784 TAILQ_INIT(&fdc->sc_drives); 785 786 if ((fdc->sc_flags & FDC_82077) != 0) { 787 fdc->sc_reg_msr = FDREG77_MSR; 788 fdc->sc_reg_fifo = FDREG77_FIFO; 789 fdc->sc_reg_dor = FDREG77_DOR; 790 fdc->sc_reg_dir = FDREG77_DIR; 791 code = '7'; 792 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 793 } else { 794 fdc->sc_reg_msr = FDREG72_MSR; 795 fdc->sc_reg_fifo = FDREG72_FIFO; 796 fdc->sc_reg_dor = 0; 797 code = '2'; 798 } 799 800 /* 801 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 802 * Note: CFG_EFIFO is active-low, initial threshold value: 8 803 */ 804 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 805 if (fdconf(fdc) != 0) { 806 printf(": no drives attached\n"); 807 return -1; 808 } 809 810 #ifdef SUN4 811 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 812 #elif SUN4U 813 fdc->sc_sicookie = softintr_establish(IPL_FDSOFT, fdcswintr, fdc); 814 #endif 815 if (fdc->sc_sicookie == NULL) { 816 printf("\n%s: cannot register soft interrupt handler\n", 817 fdc->sc_dev.dv_xname); 818 callout_stop(&fdc->sc_timo_ch); 819 callout_stop(&fdc->sc_intr_ch); 820 return -1; 821 } 822 #ifdef SUN4 823 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 824 #elif SUN4U 825 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 826 if (fdc->sc_flags & FDC_NOEJECT) 827 printf(": manual eject"); 828 printf("\n"); 829 #endif 830 831 #ifdef SUN4 832 fdciop = &fdc->sc_io; 833 if (bus_intr_establish2(fdc->sc_bustag, pri, 0 834 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 835 #elif SUN4U 836 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 837 fdc_c_hwintr, fdc) == NULL) { 838 #endif 839 printf("\n%s: cannot register interrupt handler\n", 840 fdc->sc_dev.dv_xname); 841 callout_stop(&fdc->sc_timo_ch); 842 callout_stop(&fdc->sc_intr_ch); 843 softintr_disestablish(fdc->sc_sicookie); 844 return -1; 845 } 846 847 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 848 fdc->sc_dev.dv_xname, "intr"); 849 850 /* physical limit: four drives per controller. */ 851 drive_attached = 0; 852 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 853 fa.fa_deftype = NULL; /* unknown */ 854 fa.fa_deftype = &fd_types[0]; /* XXX */ 855 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 856 drive_attached = 1; 857 } 858 859 if (drive_attached == 0) { 860 /* XXX - dis-establish interrupts here */ 861 /* return -1; */ 862 } 863 864 return 0; 865 } 866 867 int 868 fdmatch(struct device *parent, struct cfdata *match, void *aux) 869 { 870 struct fdc_softc *fdc = (void *)parent; 871 bus_space_tag_t t = fdc->sc_bustag; 872 bus_space_handle_t h = fdc->sc_handle; 873 struct fdc_attach_args *fa = aux; 874 int drive = fa->fa_drive; 875 int n, ok; 876 877 if (drive > 0) 878 /* XXX - for now, punt on more than one drive */ 879 return 0; 880 881 if ((fdc->sc_flags & FDC_82077) != 0) { 882 /* select drive and turn on motor */ 883 bus_space_write_1(t, h, fdc->sc_reg_dor, 884 drive | FDO_FRST | FDO_MOEN(drive)); 885 /* wait for motor to spin up */ 886 delay(250000); 887 #ifdef SUN4 888 } else { 889 auxregbisc(AUXIO4C_FDS, 0); 890 #endif 891 } 892 fdc->sc_nstat = 0; 893 fdc_wrfifo(fdc, NE7CMD_RECAL); 894 fdc_wrfifo(fdc, drive); 895 896 /* Wait for recalibration to complete */ 897 for (n = 0; n < 10000; n++) { 898 uint8_t v; 899 900 delay(1000); 901 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 902 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 903 /* wait a bit longer till device *really* is ready */ 904 delay(100000); 905 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 906 break; 907 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 908 /* 909 * Got `invalid command'; we interpret it 910 * to mean that the re-calibrate hasn't in 911 * fact finished yet 912 */ 913 continue; 914 break; 915 } 916 } 917 n = fdc->sc_nstat; 918 #ifdef FD_DEBUG 919 if (fdc_debug) { 920 int i; 921 printf("fdprobe: %d stati:", n); 922 for (i = 0; i < n; i++) 923 printf(" 0x%x", fdc->sc_status[i]); 924 printf("\n"); 925 } 926 #endif 927 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 928 929 /* turn off motor */ 930 if ((fdc->sc_flags & FDC_82077) != 0) { 931 /* deselect drive and turn motor off */ 932 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 933 #ifdef SUN4 934 } else { 935 auxregbisc(0, AUXIO4C_FDS); 936 #endif 937 } 938 939 return ok; 940 } 941 942 /* 943 * Controller is working, and drive responded. Attach it. 944 */ 945 void 946 fdattach(struct device *parent, struct device *self, void *aux) 947 { 948 struct fdc_softc *fdc = (void *)parent; 949 struct fd_softc *fd = (void *)self; 950 struct fdc_attach_args *fa = aux; 951 struct fd_type *type = fa->fa_deftype; 952 int drive = fa->fa_drive; 953 954 callout_init(&fd->sc_motoron_ch); 955 callout_init(&fd->sc_motoroff_ch); 956 957 /* XXX Allow `flags' to override device type? */ 958 959 if (type) 960 printf(": %s %d cyl, %d head, %d sec\n", type->name, 961 type->cylinders, type->heads, type->sectrac); 962 else 963 printf(": density unknown\n"); 964 965 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 966 fd->sc_cylin = -1; 967 fd->sc_drive = drive; 968 fd->sc_deftype = type; 969 fdc->sc_fd[drive] = fd; 970 971 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 972 fdc_wrfifo(fdc, type->steprate); 973 /* XXX head load time == 6ms */ 974 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 975 976 /* 977 * Initialize and attach the disk structure. 978 */ 979 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 980 fd->sc_dk.dk_driver = &fddkdriver; 981 disk_attach(&fd->sc_dk); 982 983 /* 984 * Establish a mountroot_hook anyway in case we booted 985 * with RB_ASKNAME and get selected as the boot device. 986 */ 987 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 988 989 fd_set_properties(fd); 990 991 /* Make sure the drive motor gets turned off at shutdown time. */ 992 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 993 } 994 995 inline struct fd_type * 996 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 997 { 998 int type = FDTYPE(dev); 999 1000 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 1001 return NULL; 1002 return type ? &fd_types[type - 1] : fd->sc_deftype; 1003 } 1004 1005 void 1006 fdstrategy(struct buf *bp) 1007 { 1008 struct fd_softc *fd; 1009 int unit = FDUNIT(bp->b_dev); 1010 int sz; 1011 int s; 1012 1013 /* Valid unit, controller, and request? */ 1014 if (unit >= fd_cd.cd_ndevs || 1015 (fd = fd_cd.cd_devs[unit]) == 0 || 1016 bp->b_blkno < 0 || 1017 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1018 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1019 (bp->b_flags & B_FORMAT) == 0)) { 1020 bp->b_error = EINVAL; 1021 goto bad; 1022 } 1023 1024 /* If it's a null transfer, return immediately. */ 1025 if (bp->b_bcount == 0) 1026 goto done; 1027 1028 sz = howmany(bp->b_bcount, DEV_BSIZE); 1029 1030 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1031 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1032 - bp->b_blkno; 1033 if (sz == 0) { 1034 /* If exactly at end of disk, return EOF. */ 1035 bp->b_resid = bp->b_bcount; 1036 goto done; 1037 } 1038 if (sz < 0) { 1039 /* If past end of disk, return EINVAL. */ 1040 bp->b_error = EINVAL; 1041 goto bad; 1042 } 1043 /* Otherwise, truncate request. */ 1044 bp->b_bcount = sz << DEV_BSHIFT; 1045 } 1046 1047 bp->b_rawblkno = bp->b_blkno; 1048 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1049 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1050 1051 #ifdef FD_DEBUG 1052 if (fdc_debug > 1) 1053 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1054 (long long)bp->b_blkno, bp->b_bcount, 1055 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1056 #endif 1057 1058 /* Queue transfer on drive, activate drive and controller if idle. */ 1059 s = splbio(); 1060 BUFQ_PUT(fd->sc_q, bp); 1061 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1062 if (fd->sc_active == 0) 1063 fdstart(fd); 1064 #ifdef DIAGNOSTIC 1065 else { 1066 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1067 if (fdc->sc_state == DEVIDLE) { 1068 printf("fdstrategy: controller inactive\n"); 1069 fdcstart(fdc); 1070 } 1071 } 1072 #endif 1073 splx(s); 1074 return; 1075 1076 bad: 1077 bp->b_flags |= B_ERROR; 1078 done: 1079 /* Toss transfer; we're done early. */ 1080 biodone(bp); 1081 } 1082 1083 void 1084 fdstart(struct fd_softc *fd) 1085 { 1086 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1087 int active = fdc->sc_drives.tqh_first != 0; 1088 1089 /* Link into controller queue. */ 1090 fd->sc_active = 1; 1091 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1092 1093 /* If controller not already active, start it. */ 1094 if (!active) 1095 fdcstart(fdc); 1096 } 1097 1098 void 1099 fdfinish(struct fd_softc *fd, struct buf *bp) 1100 { 1101 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1102 1103 /* 1104 * Move this drive to the end of the queue to give others a `fair' 1105 * chance. We only force a switch if N operations are completed while 1106 * another drive is waiting to be serviced, since there is a long motor 1107 * startup delay whenever we switch. 1108 */ 1109 (void)BUFQ_GET(fd->sc_q); 1110 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1111 fd->sc_ops = 0; 1112 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1113 if (BUFQ_PEEK(fd->sc_q) != NULL) { 1114 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1115 } else 1116 fd->sc_active = 0; 1117 } 1118 bp->b_resid = fd->sc_bcount; 1119 fd->sc_skip = 0; 1120 1121 biodone(bp); 1122 /* turn off motor 5s from now */ 1123 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1124 fdc->sc_state = DEVIDLE; 1125 } 1126 1127 void 1128 fdc_reset(struct fdc_softc *fdc) 1129 { 1130 bus_space_tag_t t = fdc->sc_bustag; 1131 bus_space_handle_t h = fdc->sc_handle; 1132 1133 if ((fdc->sc_flags & FDC_82077) != 0) { 1134 bus_space_write_1(t, h, fdc->sc_reg_dor, 1135 FDO_FDMAEN | FDO_MOEN(0)); 1136 } 1137 1138 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1139 delay(10); 1140 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1141 1142 if ((fdc->sc_flags & FDC_82077) != 0) { 1143 bus_space_write_1(t, h, fdc->sc_reg_dor, 1144 FDO_FRST | FDO_FDMAEN | FDO_DS); 1145 } 1146 #ifdef FD_DEBUG 1147 if (fdc_debug) 1148 printf("fdc reset\n"); 1149 #endif 1150 } 1151 1152 void 1153 fd_set_motor(struct fdc_softc *fdc) 1154 { 1155 struct fd_softc *fd; 1156 u_char status; 1157 int n; 1158 1159 if ((fdc->sc_flags & FDC_82077) != 0) { 1160 status = FDO_FRST | FDO_FDMAEN; 1161 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1162 status |= fd->sc_drive; 1163 1164 for (n = 0; n < 4; n++) 1165 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1166 status |= FDO_MOEN(n); 1167 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1168 fdc->sc_reg_dor, status); 1169 #ifdef SUN4 1170 } else { 1171 1172 for (n = 0; n < 4; n++) { 1173 if ((fd = fdc->sc_fd[n]) != NULL && 1174 (fd->sc_flags & FD_MOTOR) != 0) { 1175 auxregbisc(AUXIO4C_FDS, 0); 1176 return; 1177 } 1178 } 1179 auxregbisc(0, AUXIO4C_FDS); 1180 #endif 1181 } 1182 } 1183 1184 void 1185 fd_motor_off(void *arg) 1186 { 1187 struct fd_softc *fd = arg; 1188 int s; 1189 1190 s = splbio(); 1191 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1192 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1193 splx(s); 1194 } 1195 1196 void 1197 fd_motor_on(void *arg) 1198 { 1199 struct fd_softc *fd = arg; 1200 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1201 int s; 1202 1203 s = splbio(); 1204 fd->sc_flags &= ~FD_MOTOR_WAIT; 1205 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1206 (void)fdcstate(fdc); 1207 splx(s); 1208 } 1209 1210 /* 1211 * Get status bytes off the FDC after a command has finished 1212 * Returns the number of status bytes read; -1 on error. 1213 * The return value is also stored in `sc_nstat'. 1214 */ 1215 int 1216 fdcresult(struct fdc_softc *fdc) 1217 { 1218 bus_space_tag_t t = fdc->sc_bustag; 1219 bus_space_handle_t h = fdc->sc_handle; 1220 int j, n = 0; 1221 1222 for (j = 10000; j; j--) { 1223 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1224 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1225 if (v == NE7_RQM) 1226 return fdc->sc_nstat = n; 1227 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1228 if (n >= sizeof(fdc->sc_status)) { 1229 log(LOG_ERR, "fdcresult: overrun\n"); 1230 return -1; 1231 } 1232 fdc->sc_status[n++] = 1233 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1234 } else 1235 delay(1); 1236 } 1237 1238 log(LOG_ERR, "fdcresult: timeout\n"); 1239 return fdc->sc_nstat = -1; 1240 } 1241 1242 /* 1243 * Write a command byte to the FDC. 1244 * Returns 0 on success; -1 on failure (i.e. timeout) 1245 */ 1246 int 1247 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1248 { 1249 bus_space_tag_t t = fdc->sc_bustag; 1250 bus_space_handle_t h = fdc->sc_handle; 1251 int i; 1252 1253 for (i = 100000; i-- > 0;) { 1254 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1255 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1256 /* The chip is ready */ 1257 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1258 return 0; 1259 } 1260 delay(1); 1261 } 1262 return -1; 1263 } 1264 1265 int 1266 fdc_diskchange(struct fdc_softc *fdc) 1267 { 1268 1269 #ifdef SUN4 1270 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1271 #endif 1272 bus_space_tag_t t = fdc->sc_bustag; 1273 bus_space_handle_t h = fdc->sc_handle; 1274 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1275 return (v & FDI_DCHG) != 0; 1276 #ifdef SUN4 1277 } else if (CPU_ISSUN4C) { 1278 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1279 } 1280 return 0; 1281 #endif 1282 } 1283 1284 int 1285 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1286 { 1287 int unit, pmask; 1288 struct fd_softc *fd; 1289 struct fd_type *type; 1290 1291 unit = FDUNIT(dev); 1292 if (unit >= fd_cd.cd_ndevs) 1293 return ENXIO; 1294 fd = fd_cd.cd_devs[unit]; 1295 if (fd == NULL) 1296 return ENXIO; 1297 type = fd_dev_to_type(fd, dev); 1298 if (type == NULL) 1299 return ENXIO; 1300 1301 if ((fd->sc_flags & FD_OPEN) != 0 && 1302 fd->sc_type != type) 1303 return EBUSY; 1304 1305 fd->sc_type = type; 1306 fd->sc_cylin = -1; 1307 fd->sc_flags |= FD_OPEN; 1308 1309 /* 1310 * Only update the disklabel if we're not open anywhere else. 1311 */ 1312 if (fd->sc_dk.dk_openmask == 0) 1313 fdgetdisklabel(dev); 1314 1315 pmask = (1 << DISKPART(dev)); 1316 1317 switch (fmt) { 1318 case S_IFCHR: 1319 fd->sc_dk.dk_copenmask |= pmask; 1320 break; 1321 1322 case S_IFBLK: 1323 fd->sc_dk.dk_bopenmask |= pmask; 1324 break; 1325 } 1326 fd->sc_dk.dk_openmask = 1327 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1328 1329 return 0; 1330 } 1331 1332 int 1333 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1334 { 1335 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1336 int pmask = (1 << DISKPART(dev)); 1337 1338 fd->sc_flags &= ~FD_OPEN; 1339 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1340 1341 switch (fmt) { 1342 case S_IFCHR: 1343 fd->sc_dk.dk_copenmask &= ~pmask; 1344 break; 1345 1346 case S_IFBLK: 1347 fd->sc_dk.dk_bopenmask &= ~pmask; 1348 break; 1349 } 1350 fd->sc_dk.dk_openmask = 1351 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1352 1353 return 0; 1354 } 1355 1356 int 1357 fdread(dev_t dev, struct uio *uio, int flag) 1358 { 1359 1360 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1361 } 1362 1363 int 1364 fdwrite(dev_t dev, struct uio *uio, int flag) 1365 { 1366 1367 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1368 } 1369 1370 void 1371 fdcstart(struct fdc_softc *fdc) 1372 { 1373 1374 #ifdef DIAGNOSTIC 1375 /* only got here if controller's drive queue was inactive; should 1376 be in idle state */ 1377 if (fdc->sc_state != DEVIDLE) { 1378 printf("fdcstart: not idle\n"); 1379 return; 1380 } 1381 #endif 1382 (void)fdcstate(fdc); 1383 } 1384 1385 void 1386 fdcstatus(struct fdc_softc *fdc, const char *s) 1387 { 1388 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1389 int n; 1390 char bits[64]; 1391 1392 /* Just print last status */ 1393 n = fdc->sc_nstat; 1394 1395 #if 0 1396 /* 1397 * A 82072 seems to return <invalid command> on 1398 * gratuitous Sense Interrupt commands. 1399 */ 1400 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1401 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1402 (void)fdcresult(fdc); 1403 n = 2; 1404 } 1405 #endif 1406 1407 printf("%s: %s: state %d", 1408 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1409 1410 switch (n) { 1411 case 0: 1412 printf("\n"); 1413 break; 1414 case 2: 1415 printf(" (st0 %s cyl %d)\n", 1416 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1417 bits, sizeof(bits)), fdc->sc_status[1]); 1418 break; 1419 case 7: 1420 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1421 NE7_ST0BITS, bits, sizeof(bits))); 1422 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1423 NE7_ST1BITS, bits, sizeof(bits))); 1424 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1425 NE7_ST2BITS, bits, sizeof(bits))); 1426 printf(" cyl %d head %d sec %d)\n", 1427 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1428 break; 1429 #ifdef DIAGNOSTIC 1430 default: 1431 printf(" fdcstatus: weird size: %d\n", n); 1432 break; 1433 #endif 1434 } 1435 } 1436 1437 void 1438 fdctimeout(void *arg) 1439 { 1440 struct fdc_softc *fdc = arg; 1441 struct fd_softc *fd; 1442 int s; 1443 1444 s = splbio(); 1445 fd = fdc->sc_drives.tqh_first; 1446 if (fd == NULL) { 1447 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1448 fdc->sc_dev.dv_xname, 1449 fdc->sc_state, fdc->sc_istatus); 1450 fdc->sc_state = DEVIDLE; 1451 goto out; 1452 } 1453 1454 if (BUFQ_PEEK(fd->sc_q) != NULL) 1455 fdc->sc_state++; 1456 else 1457 fdc->sc_state = DEVIDLE; 1458 1459 (void)fdcstate(fdc); 1460 out: 1461 splx(s); 1462 1463 } 1464 1465 void 1466 fdcpseudointr(void *arg) 1467 { 1468 struct fdc_softc *fdc = arg; 1469 int s; 1470 1471 /* Just ensure it has the right spl. */ 1472 s = splbio(); 1473 (void)fdcstate(fdc); 1474 splx(s); 1475 } 1476 1477 1478 /* 1479 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1480 * handler is available. Unfortunately, we have no reliable way to 1481 * determine that the interrupt really came from the floppy controller; 1482 * just hope that the other devices that share this interrupt level 1483 * can do better.. 1484 */ 1485 int 1486 fdc_c_hwintr(void *arg) 1487 { 1488 struct fdc_softc *fdc = arg; 1489 bus_space_tag_t t = fdc->sc_bustag; 1490 bus_space_handle_t h = fdc->sc_handle; 1491 1492 switch (fdc->sc_itask) { 1493 case FDC_ITASK_NONE: 1494 return 0; 1495 case FDC_ITASK_SENSEI: 1496 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1497 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1498 else 1499 fdc->sc_istatus = FDC_ISTATUS_DONE; 1500 softintr_schedule(fdc->sc_sicookie); 1501 return 1; 1502 case FDC_ITASK_RESULT: 1503 if (fdcresult(fdc) == -1) 1504 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1505 else 1506 fdc->sc_istatus = FDC_ISTATUS_DONE; 1507 softintr_schedule(fdc->sc_sicookie); 1508 return 1; 1509 case FDC_ITASK_DMA: 1510 /* Proceed with pseudo-DMA below */ 1511 break; 1512 default: 1513 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1514 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1515 softintr_schedule(fdc->sc_sicookie); 1516 return 1; 1517 } 1518 1519 /* 1520 * Pseudo DMA in progress 1521 */ 1522 for (;;) { 1523 uint8_t msr; 1524 1525 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1526 1527 if ((msr & NE7_RQM) == 0) 1528 /* That's all this round */ 1529 break; 1530 1531 if ((msr & NE7_NDM) == 0) { 1532 fdcresult(fdc); 1533 fdc->sc_istatus = FDC_ISTATUS_DONE; 1534 softintr_schedule(fdc->sc_sicookie); 1535 #ifdef FD_DEBUG 1536 if (fdc_debug > 1) 1537 #ifdef SUN4 1538 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1539 #elif SUN4U 1540 printf("fdc: overrun: msr = %x, tc = %d\n", 1541 msr, fdc->sc_tc); 1542 #endif 1543 #endif 1544 break; 1545 } 1546 1547 /* Another byte can be transferred */ 1548 if ((msr & NE7_DIO) != 0) 1549 *fdc->sc_data = 1550 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1551 else 1552 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1553 *fdc->sc_data); 1554 1555 fdc->sc_data++; 1556 if (--fdc->sc_tc == 0) { 1557 fdc->sc_istatus = FDC_ISTATUS_DONE; 1558 FTC_FLIP; 1559 fdcresult(fdc); 1560 softintr_schedule(fdc->sc_sicookie); 1561 break; 1562 } 1563 } 1564 return 1; 1565 } 1566 1567 void 1568 fdcswintr(void *arg) 1569 { 1570 struct fdc_softc *fdc = arg; 1571 1572 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1573 /* This (software) interrupt is not for us */ 1574 return; 1575 1576 switch (fdc->sc_istatus) { 1577 case FDC_ISTATUS_ERROR: 1578 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1579 break; 1580 case FDC_ISTATUS_SPURIOUS: 1581 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1582 break; 1583 } 1584 1585 fdcstate(fdc); 1586 return; 1587 } 1588 1589 int 1590 fdcstate(struct fdc_softc *fdc) 1591 { 1592 1593 #define st0 fdc->sc_status[0] 1594 #define st1 fdc->sc_status[1] 1595 #define cyl fdc->sc_status[1] 1596 #define FDC_WRFIFO(fdc, c) do { \ 1597 if (fdc_wrfifo(fdc, (c))) { \ 1598 goto xxx; \ 1599 } \ 1600 } while(0) 1601 1602 struct fd_softc *fd; 1603 struct buf *bp; 1604 int read, head, sec, nblks; 1605 struct fd_type *type; 1606 struct ne7_fd_formb *finfo = NULL; 1607 1608 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1609 /* Prevent loop if the reset sequence produces errors */ 1610 if (fdc->sc_state != RESETCOMPLETE && 1611 fdc->sc_state != RECALWAIT && 1612 fdc->sc_state != RECALCOMPLETE) 1613 fdc->sc_state = DORESET; 1614 } 1615 1616 /* Clear I task/status field */ 1617 fdc->sc_istatus = FDC_ISTATUS_NONE; 1618 fdc->sc_itask = FDC_ITASK_NONE; 1619 1620 loop: 1621 /* Is there a drive for the controller to do a transfer with? */ 1622 fd = fdc->sc_drives.tqh_first; 1623 if (fd == NULL) { 1624 fdc->sc_state = DEVIDLE; 1625 return 0; 1626 } 1627 1628 /* Is there a transfer to this drive? If not, deactivate drive. */ 1629 bp = BUFQ_PEEK(fd->sc_q); 1630 if (bp == NULL) { 1631 fd->sc_ops = 0; 1632 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1633 fd->sc_active = 0; 1634 goto loop; 1635 } 1636 1637 if (bp->b_flags & B_FORMAT) 1638 finfo = (struct ne7_fd_formb *)bp->b_data; 1639 1640 switch (fdc->sc_state) { 1641 case DEVIDLE: 1642 fdc->sc_errors = 0; 1643 fd->sc_skip = 0; 1644 fd->sc_bcount = bp->b_bcount; 1645 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1646 callout_stop(&fd->sc_motoroff_ch); 1647 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1648 fdc->sc_state = MOTORWAIT; 1649 return 1; 1650 } 1651 if ((fd->sc_flags & FD_MOTOR) == 0) { 1652 /* Turn on the motor, being careful about pairing. */ 1653 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1654 if (ofd && ofd->sc_flags & FD_MOTOR) { 1655 callout_stop(&ofd->sc_motoroff_ch); 1656 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1657 } 1658 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1659 fd_set_motor(fdc); 1660 fdc->sc_state = MOTORWAIT; 1661 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1662 /* Allow .25s for motor to stabilize. */ 1663 callout_reset(&fd->sc_motoron_ch, hz / 4, 1664 fd_motor_on, fd); 1665 } else { 1666 fd->sc_flags &= ~FD_MOTOR_WAIT; 1667 goto loop; 1668 } 1669 return 1; 1670 } 1671 /* Make sure the right drive is selected. */ 1672 fd_set_motor(fdc); 1673 1674 if (fdc_diskchange(fdc)) 1675 goto dodskchg; 1676 1677 /*FALLTHROUGH*/ 1678 case DOSEEK: 1679 doseek: 1680 if ((fdc->sc_flags & FDC_EIS) && 1681 (bp->b_flags & B_FORMAT) == 0) { 1682 fd->sc_cylin = bp->b_cylinder; 1683 /* We use implied seek */ 1684 goto doio; 1685 } 1686 1687 if (fd->sc_cylin == bp->b_cylinder) 1688 goto doio; 1689 1690 fd->sc_cylin = -1; 1691 fdc->sc_state = SEEKWAIT; 1692 fdc->sc_nstat = 0; 1693 1694 iostat_seek(fd->sc_dk.dk_stats); 1695 1696 disk_busy(&fd->sc_dk); 1697 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1698 1699 /* specify command */ 1700 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1701 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1702 /* XXX head load time == 6ms */ 1703 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1704 1705 fdc->sc_itask = FDC_ITASK_SENSEI; 1706 /* seek function */ 1707 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1708 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1709 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1710 return 1; 1711 1712 case DODSKCHG: 1713 dodskchg: 1714 /* 1715 * Disk change: force a seek operation by going to cyl 1 1716 * followed by a recalibrate. 1717 */ 1718 disk_busy(&fd->sc_dk); 1719 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1720 fd->sc_cylin = -1; 1721 fdc->sc_nstat = 0; 1722 fdc->sc_state = DSKCHGWAIT; 1723 1724 fdc->sc_itask = FDC_ITASK_SENSEI; 1725 /* seek function */ 1726 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1727 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1728 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1729 return 1; 1730 1731 case DSKCHGWAIT: 1732 callout_stop(&fdc->sc_timo_ch); 1733 disk_unbusy(&fd->sc_dk, 0, 0); 1734 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1735 cyl != 1 * fd->sc_type->step) { 1736 fdcstatus(fdc, "dskchg seek failed"); 1737 fdc->sc_state = DORESET; 1738 } else 1739 fdc->sc_state = DORECAL; 1740 1741 if (fdc_diskchange(fdc)) { 1742 printf("%s: cannot clear disk change status\n", 1743 fdc->sc_dev.dv_xname); 1744 fdc->sc_state = DORESET; 1745 } 1746 goto loop; 1747 1748 case DOIO: 1749 doio: 1750 if (finfo != NULL) 1751 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1752 (char *)finfo; 1753 type = fd->sc_type; 1754 sec = fd->sc_blkno % type->seccyl; 1755 nblks = type->seccyl - sec; 1756 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1757 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1758 fd->sc_nblks = nblks; 1759 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1760 head = sec / type->sectrac; 1761 sec -= head * type->sectrac; 1762 #ifdef DIAGNOSTIC 1763 {int block; 1764 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1765 sec; 1766 if (block != fd->sc_blkno) { 1767 printf("fdcintr: block %d != blkno %d\n", block, 1768 (int)fd->sc_blkno); 1769 #ifdef DDB 1770 Debugger(); 1771 #endif 1772 }} 1773 #endif 1774 read = bp->b_flags & B_READ; 1775 1776 /* Setup for pseudo DMA */ 1777 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1778 fdc->sc_tc = fd->sc_nbytes; 1779 1780 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1781 fdc->sc_reg_drs, type->rate); 1782 #ifdef FD_DEBUG 1783 if (fdc_debug > 1) 1784 printf("fdcstate: doio: %s drive %d " 1785 "track %d head %d sec %d nblks %d\n", 1786 finfo ? "format" : 1787 (read ? "read" : "write"), 1788 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1789 #endif 1790 fdc->sc_state = IOCOMPLETE; 1791 fdc->sc_itask = FDC_ITASK_DMA; 1792 fdc->sc_nstat = 0; 1793 1794 disk_busy(&fd->sc_dk); 1795 1796 /* allow 3 seconds for operation */ 1797 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1798 1799 if (finfo != NULL) { 1800 /* formatting */ 1801 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1802 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1803 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1804 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1805 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1806 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1807 } else { 1808 if (read) 1809 FDC_WRFIFO(fdc, NE7CMD_READ); 1810 else 1811 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1812 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1813 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1814 FDC_WRFIFO(fdc, head); 1815 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1816 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1817 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1818 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1819 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1820 } 1821 1822 return 1; /* will return later */ 1823 1824 case SEEKWAIT: 1825 callout_stop(&fdc->sc_timo_ch); 1826 fdc->sc_state = SEEKCOMPLETE; 1827 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1828 /* allow 1/50 second for heads to settle */ 1829 callout_reset(&fdc->sc_intr_ch, hz / 50, 1830 fdcpseudointr, fdc); 1831 return 1; /* will return later */ 1832 } 1833 /*FALLTHROUGH*/ 1834 case SEEKCOMPLETE: 1835 /* no data on seek */ 1836 disk_unbusy(&fd->sc_dk, 0, 0); 1837 1838 /* Make sure seek really happened. */ 1839 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1840 cyl != bp->b_cylinder * fd->sc_type->step) { 1841 #ifdef FD_DEBUG 1842 if (fdc_debug) 1843 fdcstatus(fdc, "seek failed"); 1844 #endif 1845 fdcretry(fdc); 1846 goto loop; 1847 } 1848 fd->sc_cylin = bp->b_cylinder; 1849 goto doio; 1850 1851 case IOTIMEDOUT: 1852 /* 1853 * Try to abort the I/O operation without resetting 1854 * the chip first. Poke TC and arrange to pick up 1855 * the timed out I/O command's status. 1856 */ 1857 fdc->sc_itask = FDC_ITASK_RESULT; 1858 fdc->sc_state = IOCLEANUPWAIT; 1859 fdc->sc_nstat = 0; 1860 /* 1/10 second should be enough */ 1861 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1862 FTC_FLIP; 1863 return 1; 1864 1865 case IOCLEANUPTIMEDOUT: 1866 case SEEKTIMEDOUT: 1867 case RECALTIMEDOUT: 1868 case RESETTIMEDOUT: 1869 case DSKCHGTIMEDOUT: 1870 fdcstatus(fdc, "timeout"); 1871 1872 /* All other timeouts always roll through to a chip reset */ 1873 fdcretry(fdc); 1874 1875 /* Force reset, no matter what fdcretry() says */ 1876 fdc->sc_state = DORESET; 1877 goto loop; 1878 1879 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1880 callout_stop(&fdc->sc_timo_ch); 1881 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1882 (bp->b_flags & B_READ)); 1883 fdcretry(fdc); 1884 goto loop; 1885 1886 case IOCOMPLETE: /* IO DONE, post-analyze */ 1887 callout_stop(&fdc->sc_timo_ch); 1888 1889 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1890 (bp->b_flags & B_READ)); 1891 1892 if (fdc->sc_nstat != 7 || st1 != 0 || 1893 ((st0 & 0xf8) != 0 && 1894 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1895 #ifdef FD_DEBUG 1896 if (fdc_debug) { 1897 fdcstatus(fdc, bp->b_flags & B_READ ? 1898 "read failed" : "write failed"); 1899 printf("blkno %lld nblks %d nstat %d tc %d\n", 1900 (long long)fd->sc_blkno, fd->sc_nblks, 1901 fdc->sc_nstat, fdc->sc_tc); 1902 } 1903 #endif 1904 if (fdc->sc_nstat == 7 && 1905 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1906 1907 /* 1908 * Silently retry overruns if no other 1909 * error bit is set. Adjust threshold. 1910 */ 1911 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1912 if (thr < 15) { 1913 thr++; 1914 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1915 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1916 #ifdef FD_DEBUG 1917 if (fdc_debug) 1918 printf("fdc: %d -> threshold\n", 1919 thr); 1920 #endif 1921 fdconf(fdc); 1922 fdc->sc_overruns = 0; 1923 } 1924 if (++fdc->sc_overruns < 3) { 1925 fdc->sc_state = DOIO; 1926 goto loop; 1927 } 1928 } 1929 fdcretry(fdc); 1930 goto loop; 1931 } 1932 if (fdc->sc_errors) { 1933 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1934 fd->sc_skip / FD_BSIZE(fd), 1935 (struct disklabel *)NULL); 1936 printf("\n"); 1937 fdc->sc_errors = 0; 1938 } else { 1939 if (--fdc->sc_overruns < -20) { 1940 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1941 if (thr > 0) { 1942 thr--; 1943 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1944 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1945 #ifdef FD_DEBUG 1946 if (fdc_debug) 1947 printf("fdc: %d -> threshold\n", 1948 thr); 1949 #endif 1950 fdconf(fdc); 1951 } 1952 fdc->sc_overruns = 0; 1953 } 1954 } 1955 fd->sc_blkno += fd->sc_nblks; 1956 fd->sc_skip += fd->sc_nbytes; 1957 fd->sc_bcount -= fd->sc_nbytes; 1958 if (finfo == NULL && fd->sc_bcount > 0) { 1959 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1960 goto doseek; 1961 } 1962 fdfinish(fd, bp); 1963 goto loop; 1964 1965 case DORESET: 1966 /* try a reset, keep motor on */ 1967 fd_set_motor(fdc); 1968 delay(100); 1969 fdc->sc_nstat = 0; 1970 fdc->sc_itask = FDC_ITASK_SENSEI; 1971 fdc->sc_state = RESETCOMPLETE; 1972 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1973 fdc_reset(fdc); 1974 return 1; /* will return later */ 1975 1976 case RESETCOMPLETE: 1977 callout_stop(&fdc->sc_timo_ch); 1978 fdconf(fdc); 1979 1980 /* FALLTHROUGH */ 1981 case DORECAL: 1982 fdc->sc_state = RECALWAIT; 1983 fdc->sc_itask = FDC_ITASK_SENSEI; 1984 fdc->sc_nstat = 0; 1985 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1986 /* recalibrate function */ 1987 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1988 FDC_WRFIFO(fdc, fd->sc_drive); 1989 return 1; /* will return later */ 1990 1991 case RECALWAIT: 1992 callout_stop(&fdc->sc_timo_ch); 1993 fdc->sc_state = RECALCOMPLETE; 1994 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1995 /* allow 1/30 second for heads to settle */ 1996 callout_reset(&fdc->sc_intr_ch, hz / 30, 1997 fdcpseudointr, fdc); 1998 return 1; /* will return later */ 1999 } 2000 2001 case RECALCOMPLETE: 2002 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 2003 #ifdef FD_DEBUG 2004 if (fdc_debug) 2005 fdcstatus(fdc, "recalibrate failed"); 2006 #endif 2007 fdcretry(fdc); 2008 goto loop; 2009 } 2010 fd->sc_cylin = 0; 2011 goto doseek; 2012 2013 case MOTORWAIT: 2014 if (fd->sc_flags & FD_MOTOR_WAIT) 2015 return 1; /* time's not up yet */ 2016 goto doseek; 2017 2018 default: 2019 fdcstatus(fdc, "stray interrupt"); 2020 return 1; 2021 } 2022 #ifdef DIAGNOSTIC 2023 panic("fdcintr: impossible"); 2024 #endif 2025 2026 xxx: 2027 /* 2028 * We get here if the chip locks up in FDC_WRFIFO() 2029 * Cancel any operation and schedule a reset 2030 */ 2031 callout_stop(&fdc->sc_timo_ch); 2032 fdcretry(fdc); 2033 fdc->sc_state = DORESET; 2034 goto loop; 2035 2036 #undef st0 2037 #undef st1 2038 #undef cyl 2039 } 2040 2041 void 2042 fdcretry(struct fdc_softc *fdc) 2043 { 2044 struct fd_softc *fd; 2045 struct buf *bp; 2046 int error = EIO; 2047 2048 fd = fdc->sc_drives.tqh_first; 2049 bp = BUFQ_PEEK(fd->sc_q); 2050 2051 fdc->sc_overruns = 0; 2052 if (fd->sc_opts & FDOPT_NORETRY) 2053 goto fail; 2054 2055 switch (fdc->sc_errors) { 2056 case 0: 2057 if (fdc->sc_nstat == 7 && 2058 (fdc->sc_status[0] & 0xd8) == 0x40 && 2059 (fdc->sc_status[1] & 0x2) == 0x2) { 2060 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 2061 error = EROFS; 2062 goto failsilent; 2063 } 2064 /* try again */ 2065 fdc->sc_state = 2066 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2067 break; 2068 2069 case 1: case 2: case 3: 2070 /* didn't work; try recalibrating */ 2071 fdc->sc_state = DORECAL; 2072 break; 2073 2074 case 4: 2075 if (fdc->sc_nstat == 7 && 2076 fdc->sc_status[0] == 0 && 2077 fdc->sc_status[1] == 0 && 2078 fdc->sc_status[2] == 0) { 2079 /* 2080 * We've retried a few times and we've got 2081 * valid status and all three status bytes 2082 * are zero. Assume this condition is the 2083 * result of no disk loaded into the drive. 2084 */ 2085 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 2086 error = ENODEV; 2087 goto failsilent; 2088 } 2089 2090 /* still no go; reset the bastard */ 2091 fdc->sc_state = DORESET; 2092 break; 2093 2094 default: 2095 fail: 2096 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2097 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2098 fd->sc_skip / FD_BSIZE(fd), 2099 (struct disklabel *)NULL); 2100 printf("\n"); 2101 fdcstatus(fdc, "controller status"); 2102 } 2103 2104 failsilent: 2105 bp->b_flags |= B_ERROR; 2106 bp->b_error = error; 2107 fdfinish(fd, bp); 2108 } 2109 fdc->sc_errors++; 2110 } 2111 2112 int 2113 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2114 { 2115 struct fd_softc *fd; 2116 struct fdc_softc *fdc; 2117 struct fdformat_parms *form_parms; 2118 struct fdformat_cmd *form_cmd; 2119 struct ne7_fd_formb *fd_formb; 2120 int il[FD_MAX_NSEC + 1]; 2121 int unit; 2122 int i, j; 2123 int error; 2124 2125 unit = FDUNIT(dev); 2126 if (unit >= fd_cd.cd_ndevs) 2127 return ENXIO; 2128 2129 fd = fd_cd.cd_devs[FDUNIT(dev)]; 2130 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 2131 2132 switch (cmd) { 2133 case DIOCGDINFO: 2134 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2135 return 0; 2136 2137 case DIOCWLABEL: 2138 if ((flag & FWRITE) == 0) 2139 return EBADF; 2140 /* XXX do something */ 2141 return 0; 2142 2143 case DIOCWDINFO: 2144 if ((flag & FWRITE) == 0) 2145 return EBADF; 2146 2147 error = setdisklabel(fd->sc_dk.dk_label, 2148 (struct disklabel *)addr, 0, 2149 fd->sc_dk.dk_cpulabel); 2150 if (error) 2151 return error; 2152 2153 error = writedisklabel(dev, fdstrategy, 2154 fd->sc_dk.dk_label, 2155 fd->sc_dk.dk_cpulabel); 2156 return error; 2157 2158 case DIOCLOCK: 2159 /* 2160 * Nothing to do here, really. 2161 */ 2162 return 0; 2163 2164 case DIOCEJECT: 2165 if (*(int *)addr == 0) { 2166 int part = DISKPART(dev); 2167 /* 2168 * Don't force eject: check that we are the only 2169 * partition open. If so, unlock it. 2170 */ 2171 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2172 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2173 fd->sc_dk.dk_openmask) { 2174 return EBUSY; 2175 } 2176 } 2177 /* FALLTHROUGH */ 2178 case ODIOCEJECT: 2179 if (fdc->sc_flags & FDC_NOEJECT) 2180 return EINVAL; 2181 fd_do_eject(fd); 2182 return 0; 2183 2184 case FDIOCGETFORMAT: 2185 form_parms = (struct fdformat_parms *)addr; 2186 form_parms->fdformat_version = FDFORMAT_VERSION; 2187 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2188 form_parms->ncyl = fd->sc_type->cylinders; 2189 form_parms->nspt = fd->sc_type->sectrac; 2190 form_parms->ntrk = fd->sc_type->heads; 2191 form_parms->stepspercyl = fd->sc_type->step; 2192 form_parms->gaplen = fd->sc_type->gap2; 2193 form_parms->fillbyte = fd->sc_type->fillbyte; 2194 form_parms->interleave = fd->sc_type->interleave; 2195 switch (fd->sc_type->rate) { 2196 case FDC_500KBPS: 2197 form_parms->xfer_rate = 500 * 1024; 2198 break; 2199 case FDC_300KBPS: 2200 form_parms->xfer_rate = 300 * 1024; 2201 break; 2202 case FDC_250KBPS: 2203 form_parms->xfer_rate = 250 * 1024; 2204 break; 2205 default: 2206 return EINVAL; 2207 } 2208 return 0; 2209 2210 case FDIOCSETFORMAT: 2211 if ((flag & FWRITE) == 0) 2212 return EBADF; /* must be opened for writing */ 2213 2214 form_parms = (struct fdformat_parms *)addr; 2215 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2216 return EINVAL;/* wrong version of formatting prog */ 2217 2218 i = form_parms->nbps >> 7; 2219 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2220 i & ~(1 << (ffs(i)-1))) 2221 /* not a power-of-two multiple of 128 */ 2222 return EINVAL; 2223 2224 switch (form_parms->xfer_rate) { 2225 case 500 * 1024: 2226 fd->sc_type->rate = FDC_500KBPS; 2227 break; 2228 case 300 * 1024: 2229 fd->sc_type->rate = FDC_300KBPS; 2230 break; 2231 case 250 * 1024: 2232 fd->sc_type->rate = FDC_250KBPS; 2233 break; 2234 default: 2235 return EINVAL; 2236 } 2237 2238 if (form_parms->nspt > FD_MAX_NSEC || 2239 form_parms->fillbyte > 0xff || 2240 form_parms->interleave > 0xff) 2241 return EINVAL; 2242 fd->sc_type->sectrac = form_parms->nspt; 2243 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2244 return EINVAL; 2245 fd->sc_type->heads = form_parms->ntrk; 2246 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2247 fd->sc_type->secsize = ffs(i)-1; 2248 fd->sc_type->gap2 = form_parms->gaplen; 2249 fd->sc_type->cylinders = form_parms->ncyl; 2250 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2251 form_parms->nbps / DEV_BSIZE; 2252 fd->sc_type->step = form_parms->stepspercyl; 2253 fd->sc_type->fillbyte = form_parms->fillbyte; 2254 fd->sc_type->interleave = form_parms->interleave; 2255 return 0; 2256 2257 case FDIOCFORMAT_TRACK: 2258 if((flag & FWRITE) == 0) 2259 /* must be opened for writing */ 2260 return EBADF; 2261 form_cmd = (struct fdformat_cmd *)addr; 2262 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2263 /* wrong version of formatting prog */ 2264 return EINVAL; 2265 2266 if (form_cmd->head >= fd->sc_type->heads || 2267 form_cmd->cylinder >= fd->sc_type->cylinders) { 2268 return EINVAL; 2269 } 2270 2271 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2272 M_TEMP, M_NOWAIT); 2273 if (fd_formb == 0) 2274 return ENOMEM; 2275 2276 fd_formb->head = form_cmd->head; 2277 fd_formb->cyl = form_cmd->cylinder; 2278 fd_formb->transfer_rate = fd->sc_type->rate; 2279 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2280 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2281 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2282 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2283 2284 bzero(il, sizeof il); 2285 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2286 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2287 j++; 2288 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2289 j += fd->sc_type->interleave; 2290 } 2291 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2292 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2293 fd_formb->fd_formb_headno(i) = form_cmd->head; 2294 fd_formb->fd_formb_secno(i) = il[i + 1]; 2295 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2296 } 2297 2298 error = fdformat(dev, fd_formb, l->l_proc); 2299 free(fd_formb, M_TEMP); 2300 return error; 2301 2302 case FDIOCGETOPTS: /* get drive options */ 2303 *(int *)addr = fd->sc_opts; 2304 return 0; 2305 2306 case FDIOCSETOPTS: /* set drive options */ 2307 fd->sc_opts = *(int *)addr; 2308 return 0; 2309 2310 #ifdef FD_DEBUG 2311 case _IO('f', 100): 2312 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2313 fdcresult(fdc); 2314 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2315 for (i = 0; i < fdc->sc_nstat; i++) 2316 printf(" 0x%x", fdc->sc_status[i]); 2317 printf(">\n"); 2318 return 0; 2319 2320 case _IOW('f', 101, int): 2321 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2322 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2323 fdconf(fdc); 2324 return 0; 2325 2326 case _IO('f', 102): 2327 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2328 fdcresult(fdc); 2329 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2330 for (i=0; i< fdc->sc_nstat; i++) 2331 printf(" 0x%x", fdc->sc_status[i]); 2332 printf(">\n"); 2333 return 0; 2334 #endif 2335 default: 2336 return ENOTTY; 2337 } 2338 2339 #ifdef DIAGNOSTIC 2340 panic("fdioctl: impossible"); 2341 #endif 2342 } 2343 2344 int 2345 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2346 { 2347 int rv = 0; 2348 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2349 struct fd_type *type = fd->sc_type; 2350 struct buf *bp; 2351 2352 /* set up a buffer header for fdstrategy() */ 2353 bp = getiobuf_nowait(); 2354 if (bp == NULL) 2355 return ENOBUFS; 2356 2357 bp->b_vp = NULL; 2358 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2359 bp->b_proc = p; 2360 bp->b_dev = dev; 2361 2362 /* 2363 * Calculate a fake blkno, so fdstrategy() would initiate a 2364 * seek to the requested cylinder. 2365 */ 2366 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2367 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2368 / DEV_BSIZE; 2369 2370 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2371 bp->b_data = (void *)finfo; 2372 2373 #ifdef FD_DEBUG 2374 if (fdc_debug) { 2375 int i; 2376 2377 printf("fdformat: blkno 0x%llx count %d\n", 2378 (unsigned long long)bp->b_blkno, bp->b_bcount); 2379 2380 printf("\tcyl:\t%d\n", finfo->cyl); 2381 printf("\thead:\t%d\n", finfo->head); 2382 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2383 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2384 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2385 printf("\ttrack data:"); 2386 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2387 printf(" [c%d h%d s%d]", 2388 finfo->fd_formb_cylno(i), 2389 finfo->fd_formb_headno(i), 2390 finfo->fd_formb_secno(i) ); 2391 if (finfo->fd_formb_secsize(i) != 2) 2392 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2393 } 2394 printf("\n"); 2395 } 2396 #endif 2397 2398 /* now do the format */ 2399 fdstrategy(bp); 2400 2401 /* ...and wait for it to complete */ 2402 rv = biowait(bp); 2403 putiobuf(bp); 2404 return rv; 2405 } 2406 2407 void 2408 fdgetdisklabel(dev_t dev) 2409 { 2410 int unit = FDUNIT(dev), i; 2411 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2412 struct disklabel *lp = fd->sc_dk.dk_label; 2413 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2414 2415 bzero(lp, sizeof(struct disklabel)); 2416 bzero(lp, sizeof(struct cpu_disklabel)); 2417 2418 lp->d_type = DTYPE_FLOPPY; 2419 lp->d_secsize = FD_BSIZE(fd); 2420 lp->d_secpercyl = fd->sc_type->seccyl; 2421 lp->d_nsectors = fd->sc_type->sectrac; 2422 lp->d_ncylinders = fd->sc_type->cylinders; 2423 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2424 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2425 lp->d_rpm = 300; /* XXX like it matters... */ 2426 2427 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2428 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2429 lp->d_interleave = 1; 2430 lp->d_flags = D_REMOVABLE; 2431 2432 lp->d_partitions[RAW_PART].p_offset = 0; 2433 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2434 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2435 lp->d_npartitions = RAW_PART + 1; 2436 2437 lp->d_magic = DISKMAGIC; 2438 lp->d_magic2 = DISKMAGIC; 2439 lp->d_checksum = dkcksum(lp); 2440 2441 /* 2442 * Call the generic disklabel extraction routine. If there's 2443 * not a label there, fake it. 2444 */ 2445 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2446 strncpy(lp->d_packname, "default label", 2447 sizeof(lp->d_packname)); 2448 /* 2449 * Reset the partition info; it might have gotten 2450 * trashed in readdisklabel(). 2451 * 2452 * XXX Why do we have to do this? readdisklabel() 2453 * should be safe... 2454 */ 2455 for (i = 0; i < MAXPARTITIONS; ++i) { 2456 lp->d_partitions[i].p_offset = 0; 2457 if (i == RAW_PART) { 2458 lp->d_partitions[i].p_size = 2459 lp->d_secpercyl * lp->d_ncylinders; 2460 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2461 } else { 2462 lp->d_partitions[i].p_size = 0; 2463 lp->d_partitions[i].p_fstype = FS_UNUSED; 2464 } 2465 } 2466 lp->d_npartitions = RAW_PART + 1; 2467 } 2468 } 2469 2470 void 2471 fd_do_eject(struct fd_softc *fd) 2472 { 2473 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2474 2475 #ifdef SUN4 2476 if (CPU_ISSUN4C) { 2477 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2478 delay(10); 2479 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2480 return; 2481 } 2482 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2483 #endif 2484 bus_space_tag_t t = fdc->sc_bustag; 2485 bus_space_handle_t h = fdc->sc_handle; 2486 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2487 2488 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2489 delay(10); 2490 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2491 return; 2492 #ifdef SUN4 2493 } 2494 #endif 2495 } 2496 2497 /* ARGSUSED */ 2498 void 2499 fd_mountroot_hook(struct device *dev) 2500 { 2501 int c; 2502 2503 fd_do_eject((struct fd_softc *)dev); 2504 printf("Insert filesystem floppy and press return."); 2505 for (;;) { 2506 c = cngetc(); 2507 if ((c == '\r') || (c == '\n')) { 2508 printf("\n"); 2509 break; 2510 } 2511 } 2512 } 2513 2514 #ifdef MEMORY_DISK_HOOKS 2515 2516 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2517 2518 int 2519 fd_read_md_image(size_t *sizep, void **addrp) 2520 { 2521 struct buf buf, *bp = &buf; 2522 dev_t dev; 2523 off_t offset; 2524 char *addr; 2525 2526 dev = makedev(54,0); /* XXX */ 2527 2528 MALLOC(addr, void *, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2529 *addrp = addr; 2530 2531 if (fdopen(dev, 0, S_IFCHR, NULL)) 2532 panic("fd: mountroot: fdopen"); 2533 2534 offset = 0; 2535 2536 for (;;) { 2537 bp->b_dev = dev; 2538 bp->b_error = 0; 2539 bp->b_resid = 0; 2540 bp->b_proc = NULL; 2541 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2542 bp->b_blkno = btodb(offset); 2543 bp->b_bcount = DEV_BSIZE; 2544 bp->b_data = addr; 2545 fdstrategy(bp); 2546 while ((bp->b_flags & B_DONE) == 0) { 2547 tsleep((void *)bp, PRIBIO + 1, "physio", 0); 2548 } 2549 if (bp->b_error) 2550 panic("fd: mountroot: fdread error %d", bp->b_error); 2551 2552 if (bp->b_resid != 0) 2553 break; 2554 2555 addr += DEV_BSIZE; 2556 offset += DEV_BSIZE; 2557 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2558 break; 2559 } 2560 (void)fdclose(dev, 0, S_IFCHR, NULL); 2561 *sizep = offset; 2562 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2563 return 0; 2564 } 2565 #endif /* MEMORY_DISK_HOOKS */ 2566 2567 static void 2568 fd_set_properties(struct fd_softc *fd) 2569 { 2570 prop_dictionary_t disk_info, odisk_info, geom; 2571 struct fd_type *fdt; 2572 int secsize; 2573 2574 fdt = fd->sc_deftype; 2575 2576 disk_info = prop_dictionary_create(); 2577 2578 geom = prop_dictionary_create(); 2579 2580 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2581 fdt->size); 2582 2583 switch (fdt->secsize) { 2584 case 2: 2585 secsize = 512; 2586 break; 2587 case 3: 2588 secsize = 1024; 2589 break; 2590 default: 2591 secsize = 0; 2592 } 2593 2594 prop_dictionary_set_uint32(geom, "sector-size", 2595 secsize); 2596 2597 prop_dictionary_set_uint16(geom, "sectors-per-track", 2598 fdt->sectrac); 2599 2600 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2601 fdt->heads); 2602 2603 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2604 fdt->cylinders); 2605 2606 prop_dictionary_set(disk_info, "geometry", geom); 2607 prop_object_release(geom); 2608 2609 prop_dictionary_set(device_properties(&fd->sc_dv), 2610 "disk-info", disk_info); 2611 2612 /* 2613 * Don't release disk_info here; we keep a reference to it. 2614 * disk_detach() will release it when we go away. 2615 */ 2616 2617 odisk_info = fd->sc_dk.dk_info; 2618 fd->sc_dk.dk_info = disk_info; 2619 if (odisk_info) 2620 prop_object_release(odisk_info); 2621 } 2622
Indexes created Mon Sep 29 21:09:56 GMT 2025