fdc.c revision 1.18
1 /* $NetBSD: fdc.c,v 1.18 2007/11/28 18:03:56 ad 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 1.18 2007/11/28 18:03:56 ad Exp $"); 112 113 #include "opt_ddb.h" 114 #include "opt_md.h" 115 116 #include <sys/param.h> 117 #include <sys/types.h> 118 #include <sys/systm.h> 119 #include <sys/callout.h> 120 #include <sys/kernel.h> 121 #include <sys/file.h> 122 #include <sys/ioctl.h> 123 #include <sys/device.h> 124 #include <sys/disklabel.h> 125 #include <sys/disk.h> 126 #include <sys/fdio.h> 127 #include <sys/buf.h> 128 #include <sys/bufq.h> 129 #include <sys/intr.h> 130 #include <sys/malloc.h> 131 #include <sys/proc.h> 132 #include <sys/uio.h> 133 #include <sys/stat.h> 134 #include <sys/syslog.h> 135 #include <sys/queue.h> 136 #include <sys/conf.h> 137 #include <sys/intr.h> 138 139 #include <dev/cons.h> 140 141 #include <uvm/uvm_extern.h> 142 143 #include <machine/autoconf.h> 144 145 #ifdef SUN4 146 #include <sparc/sparc/auxreg.h> 147 #include <sparc/dev/fdreg.h> 148 #include <sparc/dev/fdvar.h> 149 #elif SUN4U 150 #include <dev/ebus/ebusreg.h> 151 #include <dev/ebus/ebusvar.h> 152 /* #include <sparc/sparc/auxreg.h> */ 153 #include <sparc64/dev/auxioreg.h> 154 #include <sparc64/dev/auxiovar.h> 155 #include <sparc64/dev/fdcreg.h> 156 #include <sparc64/dev/fdcvar.h> 157 #endif 158 159 #include <prop/proplib.h> 160 161 #define FDUNIT(dev) (minor(dev) / 8) 162 #define FDTYPE(dev) (minor(dev) % 8) 163 164 /* (mis)use device use flag to identify format operation */ 165 #define B_FORMAT B_DEVPRIVATE 166 167 #define FD_DEBUG 168 #ifdef FD_DEBUG 169 int fdc_debug = 0; 170 #endif 171 172 enum fdc_state { 173 DEVIDLE = 0, 174 MOTORWAIT, /* 1 */ 175 DOSEEK, /* 2 */ 176 SEEKWAIT, /* 3 */ 177 SEEKTIMEDOUT, /* 4 */ 178 SEEKCOMPLETE, /* 5 */ 179 DOIO, /* 6 */ 180 IOCOMPLETE, /* 7 */ 181 IOTIMEDOUT, /* 8 */ 182 IOCLEANUPWAIT, /* 9 */ 183 IOCLEANUPTIMEDOUT,/*10 */ 184 DORESET, /* 11 */ 185 RESETCOMPLETE, /* 12 */ 186 RESETTIMEDOUT, /* 13 */ 187 DORECAL, /* 14 */ 188 RECALWAIT, /* 15 */ 189 RECALTIMEDOUT, /* 16 */ 190 RECALCOMPLETE, /* 17 */ 191 DODSKCHG, /* 18 */ 192 DSKCHGWAIT, /* 19 */ 193 DSKCHGTIMEDOUT, /* 20 */ 194 }; 195 196 /* software state, per controller */ 197 struct fdc_softc { 198 struct device sc_dev; /* boilerplate */ 199 bus_space_tag_t sc_bustag; 200 201 struct callout sc_timo_ch; /* timeout callout */ 202 struct callout sc_intr_ch; /* pseudo-intr callout */ 203 204 struct fd_softc *sc_fd[4]; /* pointers to children */ 205 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 206 enum fdc_state sc_state; 207 int sc_flags; 208 #define FDC_82077 0x01 209 #define FDC_NEEDHEADSETTLE 0x02 210 #define FDC_EIS 0x04 211 #define FDC_NEEDMOTORWAIT 0x08 212 #define FDC_NOEJECT 0x10 213 #define FDC_EBUS 0x20 214 int sc_errors; /* number of retries so far */ 215 int sc_overruns; /* number of DMA overruns */ 216 int sc_cfg; /* current configuration */ 217 struct fdcio sc_io; 218 #define sc_handle sc_io.fdcio_handle 219 #define sc_reg_msr sc_io.fdcio_reg_msr 220 #define sc_reg_fifo sc_io.fdcio_reg_fifo 221 #define sc_reg_dor sc_io.fdcio_reg_dor 222 #define sc_reg_dir sc_io.fdcio_reg_dir 223 #define sc_reg_drs sc_io.fdcio_reg_msr 224 #define sc_itask sc_io.fdcio_itask 225 #define sc_istatus sc_io.fdcio_istatus 226 #define sc_data sc_io.fdcio_data 227 #define sc_tc sc_io.fdcio_tc 228 #define sc_nstat sc_io.fdcio_nstat 229 #define sc_status sc_io.fdcio_status 230 #define sc_intrcnt sc_io.fdcio_intrcnt 231 232 void *sc_sicookie; /* softint(9) cookie */ 233 }; 234 235 #ifdef SUN4 236 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 237 #endif 238 239 /* controller driver configuration */ 240 #ifdef SUN4 241 int fdcmatch_mainbus(struct device *, struct cfdata *, void*); 242 int fdcmatch_obio(struct device *, struct cfdata *, void *); 243 void fdcattach_mainbus(struct device *, struct device *, void *); 244 void fdcattach_obio(struct device *, struct device *, void *); 245 #elif SUN4U 246 int fdcmatch_sbus(struct device *, struct cfdata *, void *); 247 int fdcmatch_ebus(struct device *, struct cfdata *, void *); 248 void fdcattach_sbus(struct device *, struct device *, void *); 249 void fdcattach_ebus(struct device *, struct device *, void *); 250 #endif 251 252 int fdcattach(struct fdc_softc *, int); 253 254 #ifdef SUN4 255 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 256 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 257 258 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 259 fdcmatch_obio, fdcattach_obio, NULL, NULL); 260 #elif SUN4U 261 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc), 262 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 263 264 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc), 265 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 266 #endif 267 268 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 269 270 /* 271 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 272 * we tell them apart. 273 */ 274 struct fd_type { 275 int sectrac; /* sectors per track */ 276 int heads; /* number of heads */ 277 int seccyl; /* sectors per cylinder */ 278 int secsize; /* size code for sectors */ 279 int datalen; /* data len when secsize = 0 */ 280 int steprate; /* step rate and head unload time */ 281 int gap1; /* gap len between sectors */ 282 int gap2; /* formatting gap */ 283 int cylinders; /* total num of cylinders */ 284 int size; /* size of disk in sectors */ 285 int step; /* steps per cylinder */ 286 int rate; /* transfer speed code */ 287 int fillbyte; /* format fill byte */ 288 int interleave; /* interleave factor (formatting) */ 289 const char *name; 290 }; 291 292 /* The order of entries in the following table is important -- BEWARE! */ 293 struct fd_type fd_types[] = { 294 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 295 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 296 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 297 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 298 }; 299 300 /* software state, per disk (with up to 4 disks per ctlr) */ 301 struct fd_softc { 302 struct device sc_dv; /* generic device info */ 303 struct disk sc_dk; /* generic disk info */ 304 305 struct fd_type *sc_deftype; /* default type descriptor */ 306 struct fd_type *sc_type; /* current type descriptor */ 307 308 struct callout sc_motoron_ch; 309 struct callout sc_motoroff_ch; 310 311 daddr_t sc_blkno; /* starting block number */ 312 int sc_bcount; /* byte count left */ 313 int sc_skip; /* bytes already transferred */ 314 int sc_nblks; /* number of blocks currently transferring */ 315 int sc_nbytes; /* number of bytes currently transferring */ 316 317 int sc_drive; /* physical unit number */ 318 int sc_flags; 319 #define FD_OPEN 0x01 /* it's open */ 320 #define FD_MOTOR 0x02 /* motor should be on */ 321 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 322 int sc_cylin; /* where we think the head is */ 323 int sc_opts; /* user-set options */ 324 325 void *sc_sdhook; /* shutdownhook cookie */ 326 327 TAILQ_ENTRY(fd_softc) sc_drivechain; 328 int sc_ops; /* I/O ops since last switch */ 329 struct bufq_state *sc_q;/* pending I/O requests */ 330 int sc_active; /* number of active I/O requests */ 331 }; 332 333 /* floppy driver configuration */ 334 int fdmatch(struct device *, struct cfdata *, void *); 335 void fdattach(struct device *, struct device *, void *); 336 337 CFATTACH_DECL(fd, sizeof(struct fd_softc), 338 fdmatch, fdattach, NULL, NULL); 339 340 extern struct cfdriver fd_cd; 341 342 dev_type_open(fdopen); 343 dev_type_close(fdclose); 344 dev_type_read(fdread); 345 dev_type_write(fdwrite); 346 dev_type_ioctl(fdioctl); 347 dev_type_strategy(fdstrategy); 348 349 const struct bdevsw fd_bdevsw = { 350 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 351 }; 352 353 const struct cdevsw fd_cdevsw = { 354 fdopen, fdclose, fdread, fdwrite, fdioctl, 355 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 356 }; 357 358 void fdgetdisklabel(dev_t); 359 int fd_get_parms(struct fd_softc *); 360 void fdstrategy(struct buf *); 361 void fdstart(struct fd_softc *); 362 int fdprint(void *, const char *); 363 364 struct dkdriver fddkdriver = { fdstrategy, NULL }; 365 366 struct fd_type *fd_nvtotype(char *, int, int); 367 void fd_set_motor(struct fdc_softc *); 368 void fd_motor_off(void *); 369 void fd_motor_on(void *); 370 int fdcresult(struct fdc_softc *); 371 int fdc_wrfifo(struct fdc_softc *, uint8_t); 372 void fdcstart(struct fdc_softc *); 373 void fdcstatus(struct fdc_softc *, const char *); 374 void fdc_reset(struct fdc_softc *); 375 int fdc_diskchange(struct fdc_softc *); 376 void fdctimeout(void *); 377 void fdcpseudointr(void *); 378 int fdc_c_hwintr(void *); 379 void fdchwintr(void); 380 void fdcswintr(void *); 381 int fdcstate(struct fdc_softc *); 382 void fdcretry(struct fdc_softc *); 383 void fdfinish(struct fd_softc *, struct buf *); 384 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 385 void fd_do_eject(struct fd_softc *); 386 void fd_mountroot_hook(struct device *); 387 static int fdconf(struct fdc_softc *); 388 static void establish_chip_type( 389 struct fdc_softc *, 390 bus_space_tag_t, 391 bus_addr_t, 392 bus_size_t, 393 bus_space_handle_t); 394 static void fd_set_properties(struct fd_softc *); 395 396 #ifdef MEMORY_DISK_HOOKS 397 int fd_read_md_image(size_t *, void **); 398 #endif 399 400 #ifdef SUN4 401 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 402 403 int 404 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 405 { 406 struct mainbus_attach_args *ma = aux; 407 408 /* 409 * Floppy controller is on mainbus on sun4c. 410 */ 411 if (!CPU_ISSUN4C) 412 return 0; 413 414 /* sun4c PROMs call the controller "fd" */ 415 if (strcmp("fd", ma->ma_name) != 0) 416 return 0; 417 418 return bus_space_probe(ma->ma_bustag, 419 ma->ma_paddr, 420 1, /* probe size */ 421 0, /* offset */ 422 0, /* flags */ 423 NULL, NULL); 424 } 425 426 int 427 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 428 { 429 union obio_attach_args *uoba = aux; 430 struct sbus_attach_args *sa; 431 432 /* 433 * Floppy controller is on obio on sun4m. 434 */ 435 if (uoba->uoba_isobio4 != 0) 436 return 0; 437 438 sa = &uoba->uoba_sbus; 439 440 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 441 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 442 return 0; 443 444 return bus_space_probe(sa->sa_bustag, 445 sbus_bus_addr(sa->sa_bustag, 446 sa->sa_slot, sa->sa_offset), 447 1, /* probe size */ 448 0, /* offset */ 449 0, /* flags */ 450 NULL, NULL); 451 } 452 453 #elif SUN4U 454 455 int 456 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux) 457 { 458 struct sbus_attach_args *sa = aux; 459 460 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 461 } 462 463 int 464 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux) 465 { 466 struct ebus_attach_args *ea = aux; 467 468 return strcmp("fdthree", ea->ea_name) == 0; 469 } 470 #endif 471 472 static void 473 establish_chip_type(struct fdc_softc *fdc, 474 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 475 bus_space_handle_t handle) 476 { 477 uint8_t v; 478 479 /* 480 * This hack from Chris Torek: apparently DOR really 481 * addresses MSR/DRS on a 82072. 482 * We used to rely on the VERSION command to tell the 483 * difference (which did not work). 484 */ 485 486 /* First, check the size of the register bank */ 487 if (size < 8) 488 /* It isn't a 82077 */ 489 return; 490 491 #ifdef SUN4 492 /* Then probe the DOR register offset */ 493 if (bus_space_probe(tag, addr, 494 1, /* probe size */ 495 FDREG77_DOR, /* offset */ 496 0, /* flags */ 497 NULL, NULL) == 0) { 498 499 /* It isn't a 82077 */ 500 return; 501 } 502 #endif 503 504 v = bus_space_read_1(tag, handle, FDREG77_DOR); 505 if (v == NE7_RQM) { 506 /* 507 * Value in DOR looks like it's really MSR 508 */ 509 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 510 v = bus_space_read_1(tag, handle, FDREG77_DOR); 511 if (v == NE7_RQM) { 512 /* 513 * The value in the DOR didn't stick; 514 * it isn't a 82077 515 */ 516 return; 517 } 518 } 519 520 fdc->sc_flags |= FDC_82077; 521 } 522 523 /* 524 * Arguments passed between fdcattach and fdprobe. 525 */ 526 struct fdc_attach_args { 527 int fa_drive; 528 struct fd_type *fa_deftype; 529 }; 530 531 /* 532 * Print the location of a disk drive (called just before attaching the 533 * the drive). If `fdc' is not NULL, the drive was found but was not 534 * in the system config file; print the drive name as well. 535 * Return QUIET (config_find ignores this if the device was configured) to 536 * avoid printing `fdN not configured' messages. 537 */ 538 int 539 fdprint(void *aux, const char *fdc) 540 { 541 register struct fdc_attach_args *fa = aux; 542 543 if (!fdc) 544 aprint_normal(" drive %d", fa->fa_drive); 545 return QUIET; 546 } 547 548 /* 549 * Configure several parameters and features on the FDC. 550 * Return 0 on success. 551 */ 552 static int 553 fdconf(struct fdc_softc *fdc) 554 { 555 int vroom; 556 557 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 558 return -1; 559 560 /* 561 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 562 * the PROM thinks is appropriate. 563 */ 564 if ((vroom = fdc->sc_status[7]) == 0) 565 vroom = 0x64; 566 567 /* Configure controller to use FIFO and Implied Seek */ 568 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 569 return -1; 570 if (fdc_wrfifo(fdc, vroom) != 0) 571 return -1; 572 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 573 return -1; 574 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 575 return -1; 576 /* No result phase for the NE7CMD_CFG command */ 577 578 if ((fdc->sc_flags & FDC_82077) != 0) { 579 /* Lock configuration across soft resets. */ 580 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 581 fdcresult(fdc) != 1) { 582 #ifdef DEBUG 583 printf("fdconf: CFGLOCK failed"); 584 #endif 585 return -1; 586 } 587 } 588 589 return 0; 590 #if 0 591 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 592 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 593 if (fdc_debug) 594 printf("[version cmd]"); 595 } 596 #endif 597 } 598 599 #ifdef SUN4 600 void 601 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 602 { 603 struct fdc_softc *fdc = (void *)self; 604 struct mainbus_attach_args *ma = aux; 605 606 fdc->sc_bustag = ma->ma_bustag; 607 608 if (bus_space_map( 609 ma->ma_bustag, 610 ma->ma_paddr, 611 ma->ma_size, 612 BUS_SPACE_MAP_LINEAR, 613 &fdc->sc_handle) != 0) { 614 printf("%s: cannot map registers\n", self->dv_xname); 615 return; 616 } 617 618 establish_chip_type(fdc, 619 ma->ma_bustag, 620 ma->ma_paddr, 621 ma->ma_size, 622 fdc->sc_handle); 623 624 if (fdcattach(fdc, ma->ma_pri) != 0) 625 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 626 } 627 628 void 629 fdcattach_obio(struct device *parent, struct device *self, void *aux) 630 { 631 struct fdc_softc *fdc = (void *)self; 632 union obio_attach_args *uoba = aux; 633 struct sbus_attach_args *sa = &uoba->uoba_sbus; 634 635 if (sa->sa_nintr == 0) { 636 printf(": no interrupt line configured\n"); 637 return; 638 } 639 640 fdc->sc_bustag = sa->sa_bustag; 641 642 if (sbus_bus_map(sa->sa_bustag, 643 sa->sa_slot, sa->sa_offset, sa->sa_size, 644 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 645 printf("%s: cannot map control registers\n", 646 self->dv_xname); 647 return; 648 } 649 650 establish_chip_type(fdc, 651 sa->sa_bustag, 652 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 653 sa->sa_size, 654 fdc->sc_handle); 655 656 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 657 printf(": no drives attached\n"); 658 return; 659 } 660 661 if (fdcattach(fdc, sa->sa_pri) != 0) 662 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 663 } 664 665 #elif SUN4U 666 667 void 668 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 669 { 670 struct fdc_softc *fdc = (void *)self; 671 struct sbus_attach_args *sa = aux; 672 673 if (sa->sa_nintr == 0) { 674 printf(": no interrupt line configured\n"); 675 return; 676 } 677 678 if (auxio_fd_control(0) != 0) { 679 printf(": can't attach before auxio\n"); 680 return; 681 } 682 683 fdc->sc_bustag = sa->sa_bustag; 684 685 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 686 sa->sa_size, 0, &fdc->sc_handle) != 0) { 687 printf(": cannot map control registers\n"); 688 return; 689 } 690 691 establish_chip_type(fdc, 692 sa->sa_bustag, 693 BUS_ADDR(sa->sa_slot, sa->sa_offset), 694 sa->sa_size, 695 fdc->sc_handle); 696 697 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 698 printf(": no drives attached\n"); 699 return; 700 } 701 702 if (prom_getproplen(sa->sa_node, "manual") >= 0) 703 fdc->sc_flags |= FDC_NOEJECT; 704 705 706 if (fdcattach(fdc, sa->sa_pri) != 0) 707 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 708 } 709 710 void 711 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 712 { 713 struct fdc_softc *fdc = (void *)self; 714 struct ebus_attach_args *ea = aux; 715 int map_vaddr; 716 717 if (ea->ea_nintr == 0) { 718 printf(": no interrupt line configured\n"); 719 return; 720 } 721 722 if (ea->ea_nreg < 3) { 723 printf(": expected 3 registers, only got %d\n", 724 ea->ea_nreg); 725 return; 726 } 727 728 fdc->sc_bustag = ea->ea_bustag; 729 730 if (ea->ea_nvaddr > 0) { 731 sparc_promaddr_to_handle(ea->ea_bustag, 732 ea->ea_vaddr[0], &fdc->sc_handle); 733 map_vaddr = 1; 734 } else if (bus_space_map(fdc->sc_bustag, 735 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 736 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 737 map_vaddr = 0; 738 } else { 739 printf(": can't map control registers\n"); 740 return; 741 } 742 743 establish_chip_type(fdc, 744 fdc->sc_bustag, 745 map_vaddr ? ea->ea_vaddr[0] : 746 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 747 ea->ea_reg[0].size, 748 fdc->sc_handle); 749 750 fdc->sc_flags |= FDC_EBUS; 751 752 if (prom_getproplen(ea->ea_node, "manual") >= 0) 753 fdc->sc_flags |= FDC_NOEJECT; 754 755 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 756 if (map_vaddr == 0) 757 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 758 ea->ea_reg[0].size); 759 } 760 #endif 761 762 int 763 fdcattach(struct fdc_softc *fdc, int pri) 764 { 765 struct fdc_attach_args fa; 766 int drive_attached; 767 char code; 768 769 callout_init(&fdc->sc_timo_ch, 0); 770 callout_init(&fdc->sc_intr_ch, 0); 771 772 fdc->sc_state = DEVIDLE; 773 fdc->sc_itask = FDC_ITASK_NONE; 774 fdc->sc_istatus = FDC_ISTATUS_NONE; 775 fdc->sc_flags |= FDC_EIS; 776 TAILQ_INIT(&fdc->sc_drives); 777 778 if ((fdc->sc_flags & FDC_82077) != 0) { 779 fdc->sc_reg_msr = FDREG77_MSR; 780 fdc->sc_reg_fifo = FDREG77_FIFO; 781 fdc->sc_reg_dor = FDREG77_DOR; 782 fdc->sc_reg_dir = FDREG77_DIR; 783 code = '7'; 784 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 785 } else { 786 fdc->sc_reg_msr = FDREG72_MSR; 787 fdc->sc_reg_fifo = FDREG72_FIFO; 788 fdc->sc_reg_dor = 0; 789 code = '2'; 790 } 791 792 /* 793 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 794 * Note: CFG_EFIFO is active-low, initial threshold value: 8 795 */ 796 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 797 if (fdconf(fdc) != 0) { 798 printf(": no drives attached\n"); 799 return -1; 800 } 801 802 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 803 if (fdc->sc_sicookie == NULL) { 804 printf("\n%s: cannot register soft interrupt handler\n", 805 fdc->sc_dev.dv_xname); 806 callout_stop(&fdc->sc_timo_ch); 807 callout_stop(&fdc->sc_intr_ch); 808 return -1; 809 } 810 #ifdef SUN4 811 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 812 #elif SUN4U 813 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 814 if (fdc->sc_flags & FDC_NOEJECT) 815 printf(": manual eject"); 816 printf("\n"); 817 #endif 818 819 #ifdef SUN4 820 fdciop = &fdc->sc_io; 821 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 822 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 823 #elif SUN4U 824 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 825 fdc_c_hwintr, fdc) == NULL) { 826 #endif 827 printf("\n%s: cannot register interrupt handler\n", 828 fdc->sc_dev.dv_xname); 829 callout_stop(&fdc->sc_timo_ch); 830 callout_stop(&fdc->sc_intr_ch); 831 softint_disestablish(fdc->sc_sicookie); 832 return -1; 833 } 834 835 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 836 fdc->sc_dev.dv_xname, "intr"); 837 838 /* physical limit: four drives per controller. */ 839 drive_attached = 0; 840 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 841 fa.fa_deftype = NULL; /* unknown */ 842 fa.fa_deftype = &fd_types[0]; /* XXX */ 843 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 844 drive_attached = 1; 845 } 846 847 if (drive_attached == 0) { 848 /* XXX - dis-establish interrupts here */ 849 /* return -1; */ 850 } 851 852 return 0; 853 } 854 855 int 856 fdmatch(struct device *parent, struct cfdata *match, void *aux) 857 { 858 struct fdc_softc *fdc = (void *)parent; 859 bus_space_tag_t t = fdc->sc_bustag; 860 bus_space_handle_t h = fdc->sc_handle; 861 struct fdc_attach_args *fa = aux; 862 int drive = fa->fa_drive; 863 int n, ok; 864 865 if (drive > 0) 866 /* XXX - for now, punt on more than one drive */ 867 return 0; 868 869 if ((fdc->sc_flags & FDC_82077) != 0) { 870 /* select drive and turn on motor */ 871 bus_space_write_1(t, h, fdc->sc_reg_dor, 872 drive | FDO_FRST | FDO_MOEN(drive)); 873 /* wait for motor to spin up */ 874 delay(250000); 875 #ifdef SUN4 876 } else { 877 auxregbisc(AUXIO4C_FDS, 0); 878 #endif 879 } 880 fdc->sc_nstat = 0; 881 fdc_wrfifo(fdc, NE7CMD_RECAL); 882 fdc_wrfifo(fdc, drive); 883 884 /* Wait for recalibration to complete */ 885 for (n = 0; n < 10000; n++) { 886 uint8_t v; 887 888 delay(1000); 889 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 890 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 891 /* wait a bit longer till device *really* is ready */ 892 delay(100000); 893 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 894 break; 895 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 896 /* 897 * Got `invalid command'; we interpret it 898 * to mean that the re-calibrate hasn't in 899 * fact finished yet 900 */ 901 continue; 902 break; 903 } 904 } 905 n = fdc->sc_nstat; 906 #ifdef FD_DEBUG 907 if (fdc_debug) { 908 int i; 909 printf("fdprobe: %d stati:", n); 910 for (i = 0; i < n; i++) 911 printf(" 0x%x", fdc->sc_status[i]); 912 printf("\n"); 913 } 914 #endif 915 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 916 917 /* turn off motor */ 918 if ((fdc->sc_flags & FDC_82077) != 0) { 919 /* deselect drive and turn motor off */ 920 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 921 #ifdef SUN4 922 } else { 923 auxregbisc(0, AUXIO4C_FDS); 924 #endif 925 } 926 927 return ok; 928 } 929 930 /* 931 * Controller is working, and drive responded. Attach it. 932 */ 933 void 934 fdattach(struct device *parent, struct device *self, void *aux) 935 { 936 struct fdc_softc *fdc = (void *)parent; 937 struct fd_softc *fd = (void *)self; 938 struct fdc_attach_args *fa = aux; 939 struct fd_type *type = fa->fa_deftype; 940 int drive = fa->fa_drive; 941 942 callout_init(&fd->sc_motoron_ch, 0); 943 callout_init(&fd->sc_motoroff_ch, 0); 944 945 /* XXX Allow `flags' to override device type? */ 946 947 if (type) 948 printf(": %s %d cyl, %d head, %d sec\n", type->name, 949 type->cylinders, type->heads, type->sectrac); 950 else 951 printf(": density unknown\n"); 952 953 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 954 fd->sc_cylin = -1; 955 fd->sc_drive = drive; 956 fd->sc_deftype = type; 957 fdc->sc_fd[drive] = fd; 958 959 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 960 fdc_wrfifo(fdc, type->steprate); 961 /* XXX head load time == 6ms */ 962 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 963 964 /* 965 * Initialize and attach the disk structure. 966 */ 967 disk_init(&fd->sc_dk, fd->sc_dv.dv_xname, &fddkdriver); 968 disk_attach(&fd->sc_dk); 969 970 /* 971 * Establish a mountroot_hook anyway in case we booted 972 * with RB_ASKNAME and get selected as the boot device. 973 */ 974 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 975 976 fd_set_properties(fd); 977 978 /* Make sure the drive motor gets turned off at shutdown time. */ 979 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 980 } 981 982 inline struct fd_type * 983 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 984 { 985 int type = FDTYPE(dev); 986 987 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 988 return NULL; 989 return type ? &fd_types[type - 1] : fd->sc_deftype; 990 } 991 992 void 993 fdstrategy(struct buf *bp) 994 { 995 struct fd_softc *fd; 996 int unit = FDUNIT(bp->b_dev); 997 int sz; 998 int s; 999 1000 /* Valid unit, controller, and request? */ 1001 if (unit >= fd_cd.cd_ndevs || 1002 (fd = fd_cd.cd_devs[unit]) == 0 || 1003 bp->b_blkno < 0 || 1004 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1005 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1006 (bp->b_flags & B_FORMAT) == 0)) { 1007 bp->b_error = EINVAL; 1008 goto done; 1009 } 1010 1011 /* If it's a null transfer, return immediately. */ 1012 if (bp->b_bcount == 0) 1013 goto done; 1014 1015 sz = howmany(bp->b_bcount, DEV_BSIZE); 1016 1017 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1018 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1019 - bp->b_blkno; 1020 if (sz == 0) { 1021 /* If exactly at end of disk, return EOF. */ 1022 bp->b_resid = bp->b_bcount; 1023 goto done; 1024 } 1025 if (sz < 0) { 1026 /* If past end of disk, return EINVAL. */ 1027 bp->b_error = EINVAL; 1028 goto done; 1029 } 1030 /* Otherwise, truncate request. */ 1031 bp->b_bcount = sz << DEV_BSHIFT; 1032 } 1033 1034 bp->b_rawblkno = bp->b_blkno; 1035 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1036 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1037 1038 #ifdef FD_DEBUG 1039 if (fdc_debug > 1) 1040 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1041 (long long)bp->b_blkno, bp->b_bcount, 1042 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1043 #endif 1044 1045 /* Queue transfer on drive, activate drive and controller if idle. */ 1046 s = splbio(); 1047 BUFQ_PUT(fd->sc_q, bp); 1048 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1049 if (fd->sc_active == 0) 1050 fdstart(fd); 1051 #ifdef DIAGNOSTIC 1052 else { 1053 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1054 if (fdc->sc_state == DEVIDLE) { 1055 printf("fdstrategy: controller inactive\n"); 1056 fdcstart(fdc); 1057 } 1058 } 1059 #endif 1060 splx(s); 1061 return; 1062 1063 done: 1064 /* Toss transfer; we're done early. */ 1065 biodone(bp); 1066 } 1067 1068 void 1069 fdstart(struct fd_softc *fd) 1070 { 1071 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1072 int active = fdc->sc_drives.tqh_first != 0; 1073 1074 /* Link into controller queue. */ 1075 fd->sc_active = 1; 1076 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1077 1078 /* If controller not already active, start it. */ 1079 if (!active) 1080 fdcstart(fdc); 1081 } 1082 1083 void 1084 fdfinish(struct fd_softc *fd, struct buf *bp) 1085 { 1086 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1087 1088 /* 1089 * Move this drive to the end of the queue to give others a `fair' 1090 * chance. We only force a switch if N operations are completed while 1091 * another drive is waiting to be serviced, since there is a long motor 1092 * startup delay whenever we switch. 1093 */ 1094 (void)BUFQ_GET(fd->sc_q); 1095 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1096 fd->sc_ops = 0; 1097 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1098 if (BUFQ_PEEK(fd->sc_q) != NULL) { 1099 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1100 } else 1101 fd->sc_active = 0; 1102 } 1103 bp->b_resid = fd->sc_bcount; 1104 fd->sc_skip = 0; 1105 1106 biodone(bp); 1107 /* turn off motor 5s from now */ 1108 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1109 fdc->sc_state = DEVIDLE; 1110 } 1111 1112 void 1113 fdc_reset(struct fdc_softc *fdc) 1114 { 1115 bus_space_tag_t t = fdc->sc_bustag; 1116 bus_space_handle_t h = fdc->sc_handle; 1117 1118 if ((fdc->sc_flags & FDC_82077) != 0) { 1119 bus_space_write_1(t, h, fdc->sc_reg_dor, 1120 FDO_FDMAEN | FDO_MOEN(0)); 1121 } 1122 1123 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1124 delay(10); 1125 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1126 1127 if ((fdc->sc_flags & FDC_82077) != 0) { 1128 bus_space_write_1(t, h, fdc->sc_reg_dor, 1129 FDO_FRST | FDO_FDMAEN | FDO_DS); 1130 } 1131 #ifdef FD_DEBUG 1132 if (fdc_debug) 1133 printf("fdc reset\n"); 1134 #endif 1135 } 1136 1137 void 1138 fd_set_motor(struct fdc_softc *fdc) 1139 { 1140 struct fd_softc *fd; 1141 u_char status; 1142 int n; 1143 1144 if ((fdc->sc_flags & FDC_82077) != 0) { 1145 status = FDO_FRST | FDO_FDMAEN; 1146 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1147 status |= fd->sc_drive; 1148 1149 for (n = 0; n < 4; n++) 1150 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1151 status |= FDO_MOEN(n); 1152 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1153 fdc->sc_reg_dor, status); 1154 #ifdef SUN4 1155 } else { 1156 1157 for (n = 0; n < 4; n++) { 1158 if ((fd = fdc->sc_fd[n]) != NULL && 1159 (fd->sc_flags & FD_MOTOR) != 0) { 1160 auxregbisc(AUXIO4C_FDS, 0); 1161 return; 1162 } 1163 } 1164 auxregbisc(0, AUXIO4C_FDS); 1165 #endif 1166 } 1167 } 1168 1169 void 1170 fd_motor_off(void *arg) 1171 { 1172 struct fd_softc *fd = arg; 1173 int s; 1174 1175 s = splbio(); 1176 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1177 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1178 splx(s); 1179 } 1180 1181 void 1182 fd_motor_on(void *arg) 1183 { 1184 struct fd_softc *fd = arg; 1185 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1186 int s; 1187 1188 s = splbio(); 1189 fd->sc_flags &= ~FD_MOTOR_WAIT; 1190 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1191 (void)fdcstate(fdc); 1192 splx(s); 1193 } 1194 1195 /* 1196 * Get status bytes off the FDC after a command has finished 1197 * Returns the number of status bytes read; -1 on error. 1198 * The return value is also stored in `sc_nstat'. 1199 */ 1200 int 1201 fdcresult(struct fdc_softc *fdc) 1202 { 1203 bus_space_tag_t t = fdc->sc_bustag; 1204 bus_space_handle_t h = fdc->sc_handle; 1205 int j, n = 0; 1206 1207 for (j = 10000; j; j--) { 1208 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1209 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1210 if (v == NE7_RQM) 1211 return fdc->sc_nstat = n; 1212 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1213 if (n >= sizeof(fdc->sc_status)) { 1214 log(LOG_ERR, "fdcresult: overrun\n"); 1215 return -1; 1216 } 1217 fdc->sc_status[n++] = 1218 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1219 } else 1220 delay(1); 1221 } 1222 1223 log(LOG_ERR, "fdcresult: timeout\n"); 1224 return fdc->sc_nstat = -1; 1225 } 1226 1227 /* 1228 * Write a command byte to the FDC. 1229 * Returns 0 on success; -1 on failure (i.e. timeout) 1230 */ 1231 int 1232 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1233 { 1234 bus_space_tag_t t = fdc->sc_bustag; 1235 bus_space_handle_t h = fdc->sc_handle; 1236 int i; 1237 1238 for (i = 100000; i-- > 0;) { 1239 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1240 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1241 /* The chip is ready */ 1242 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1243 return 0; 1244 } 1245 delay(1); 1246 } 1247 return -1; 1248 } 1249 1250 int 1251 fdc_diskchange(struct fdc_softc *fdc) 1252 { 1253 1254 #ifdef SUN4 1255 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1256 #endif 1257 bus_space_tag_t t = fdc->sc_bustag; 1258 bus_space_handle_t h = fdc->sc_handle; 1259 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1260 return (v & FDI_DCHG) != 0; 1261 #ifdef SUN4 1262 } else if (CPU_ISSUN4C) { 1263 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1264 } 1265 return 0; 1266 #endif 1267 } 1268 1269 int 1270 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1271 { 1272 int unit, pmask; 1273 struct fd_softc *fd; 1274 struct fd_type *type; 1275 1276 unit = FDUNIT(dev); 1277 if (unit >= fd_cd.cd_ndevs) 1278 return ENXIO; 1279 fd = fd_cd.cd_devs[unit]; 1280 if (fd == NULL) 1281 return ENXIO; 1282 type = fd_dev_to_type(fd, dev); 1283 if (type == NULL) 1284 return ENXIO; 1285 1286 if ((fd->sc_flags & FD_OPEN) != 0 && 1287 fd->sc_type != type) 1288 return EBUSY; 1289 1290 fd->sc_type = type; 1291 fd->sc_cylin = -1; 1292 fd->sc_flags |= FD_OPEN; 1293 1294 /* 1295 * Only update the disklabel if we're not open anywhere else. 1296 */ 1297 if (fd->sc_dk.dk_openmask == 0) 1298 fdgetdisklabel(dev); 1299 1300 pmask = (1 << DISKPART(dev)); 1301 1302 switch (fmt) { 1303 case S_IFCHR: 1304 fd->sc_dk.dk_copenmask |= pmask; 1305 break; 1306 1307 case S_IFBLK: 1308 fd->sc_dk.dk_bopenmask |= pmask; 1309 break; 1310 } 1311 fd->sc_dk.dk_openmask = 1312 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1313 1314 return 0; 1315 } 1316 1317 int 1318 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1319 { 1320 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1321 int pmask = (1 << DISKPART(dev)); 1322 1323 fd->sc_flags &= ~FD_OPEN; 1324 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1325 1326 switch (fmt) { 1327 case S_IFCHR: 1328 fd->sc_dk.dk_copenmask &= ~pmask; 1329 break; 1330 1331 case S_IFBLK: 1332 fd->sc_dk.dk_bopenmask &= ~pmask; 1333 break; 1334 } 1335 fd->sc_dk.dk_openmask = 1336 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1337 1338 return 0; 1339 } 1340 1341 int 1342 fdread(dev_t dev, struct uio *uio, int flag) 1343 { 1344 1345 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1346 } 1347 1348 int 1349 fdwrite(dev_t dev, struct uio *uio, int flag) 1350 { 1351 1352 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1353 } 1354 1355 void 1356 fdcstart(struct fdc_softc *fdc) 1357 { 1358 1359 #ifdef DIAGNOSTIC 1360 /* only got here if controller's drive queue was inactive; should 1361 be in idle state */ 1362 if (fdc->sc_state != DEVIDLE) { 1363 printf("fdcstart: not idle\n"); 1364 return; 1365 } 1366 #endif 1367 (void)fdcstate(fdc); 1368 } 1369 1370 void 1371 fdcstatus(struct fdc_softc *fdc, const char *s) 1372 { 1373 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1374 int n; 1375 char bits[64]; 1376 1377 /* Just print last status */ 1378 n = fdc->sc_nstat; 1379 1380 #if 0 1381 /* 1382 * A 82072 seems to return <invalid command> on 1383 * gratuitous Sense Interrupt commands. 1384 */ 1385 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1386 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1387 (void)fdcresult(fdc); 1388 n = 2; 1389 } 1390 #endif 1391 1392 printf("%s: %s: state %d", 1393 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1394 1395 switch (n) { 1396 case 0: 1397 printf("\n"); 1398 break; 1399 case 2: 1400 printf(" (st0 %s cyl %d)\n", 1401 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1402 bits, sizeof(bits)), fdc->sc_status[1]); 1403 break; 1404 case 7: 1405 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1406 NE7_ST0BITS, bits, sizeof(bits))); 1407 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1408 NE7_ST1BITS, bits, sizeof(bits))); 1409 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1410 NE7_ST2BITS, bits, sizeof(bits))); 1411 printf(" cyl %d head %d sec %d)\n", 1412 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1413 break; 1414 #ifdef DIAGNOSTIC 1415 default: 1416 printf(" fdcstatus: weird size: %d\n", n); 1417 break; 1418 #endif 1419 } 1420 } 1421 1422 void 1423 fdctimeout(void *arg) 1424 { 1425 struct fdc_softc *fdc = arg; 1426 struct fd_softc *fd; 1427 int s; 1428 1429 s = splbio(); 1430 fd = fdc->sc_drives.tqh_first; 1431 if (fd == NULL) { 1432 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1433 fdc->sc_dev.dv_xname, 1434 fdc->sc_state, fdc->sc_istatus); 1435 fdc->sc_state = DEVIDLE; 1436 goto out; 1437 } 1438 1439 if (BUFQ_PEEK(fd->sc_q) != NULL) 1440 fdc->sc_state++; 1441 else 1442 fdc->sc_state = DEVIDLE; 1443 1444 (void)fdcstate(fdc); 1445 out: 1446 splx(s); 1447 1448 } 1449 1450 void 1451 fdcpseudointr(void *arg) 1452 { 1453 struct fdc_softc *fdc = arg; 1454 int s; 1455 1456 /* Just ensure it has the right spl. */ 1457 s = splbio(); 1458 (void)fdcstate(fdc); 1459 splx(s); 1460 } 1461 1462 1463 /* 1464 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1465 * handler is available. Unfortunately, we have no reliable way to 1466 * determine that the interrupt really came from the floppy controller; 1467 * just hope that the other devices that share this interrupt level 1468 * can do better.. 1469 */ 1470 int 1471 fdc_c_hwintr(void *arg) 1472 { 1473 struct fdc_softc *fdc = arg; 1474 bus_space_tag_t t = fdc->sc_bustag; 1475 bus_space_handle_t h = fdc->sc_handle; 1476 1477 switch (fdc->sc_itask) { 1478 case FDC_ITASK_NONE: 1479 return 0; 1480 case FDC_ITASK_SENSEI: 1481 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1482 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1483 else 1484 fdc->sc_istatus = FDC_ISTATUS_DONE; 1485 softint_schedule(fdc->sc_sicookie); 1486 return 1; 1487 case FDC_ITASK_RESULT: 1488 if (fdcresult(fdc) == -1) 1489 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1490 else 1491 fdc->sc_istatus = FDC_ISTATUS_DONE; 1492 softint_schedule(fdc->sc_sicookie); 1493 return 1; 1494 case FDC_ITASK_DMA: 1495 /* Proceed with pseudo-DMA below */ 1496 break; 1497 default: 1498 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1499 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1500 softint_schedule(fdc->sc_sicookie); 1501 return 1; 1502 } 1503 1504 /* 1505 * Pseudo DMA in progress 1506 */ 1507 for (;;) { 1508 uint8_t msr; 1509 1510 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1511 1512 if ((msr & NE7_RQM) == 0) 1513 /* That's all this round. */ 1514 break; 1515 1516 if ((msr & NE7_NDM) == 0) { 1517 /* Execution phase finished, get result. */ 1518 fdcresult(fdc); 1519 fdc->sc_istatus = FDC_ISTATUS_DONE; 1520 softint_schedule(fdc->sc_sicookie); 1521 break; 1522 } 1523 1524 if (fdc->sc_tc == 0) 1525 /* For some reason the controller wants to transfer 1526 more data then what we want to transfer. */ 1527 panic("fdc: overrun"); 1528 1529 /* Another byte can be transferred */ 1530 if ((msr & NE7_DIO) != 0) 1531 *fdc->sc_data = 1532 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1533 else 1534 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1535 *fdc->sc_data); 1536 1537 fdc->sc_data++; 1538 if (--fdc->sc_tc == 0) { 1539 FTC_FLIP; 1540 break; 1541 } 1542 } 1543 return 1; 1544 } 1545 1546 void 1547 fdcswintr(void *arg) 1548 { 1549 struct fdc_softc *fdc = arg; 1550 1551 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1552 /* This (software) interrupt is not for us */ 1553 return; 1554 1555 switch (fdc->sc_istatus) { 1556 case FDC_ISTATUS_ERROR: 1557 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1558 break; 1559 case FDC_ISTATUS_SPURIOUS: 1560 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1561 break; 1562 } 1563 1564 fdcstate(fdc); 1565 return; 1566 } 1567 1568 int 1569 fdcstate(struct fdc_softc *fdc) 1570 { 1571 1572 #define st0 fdc->sc_status[0] 1573 #define st1 fdc->sc_status[1] 1574 #define cyl fdc->sc_status[1] 1575 #define FDC_WRFIFO(fdc, c) do { \ 1576 if (fdc_wrfifo(fdc, (c))) { \ 1577 goto xxx; \ 1578 } \ 1579 } while(0) 1580 1581 struct fd_softc *fd; 1582 struct buf *bp; 1583 int read, head, sec, nblks; 1584 struct fd_type *type; 1585 struct ne7_fd_formb *finfo = NULL; 1586 1587 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1588 /* Prevent loop if the reset sequence produces errors */ 1589 if (fdc->sc_state != RESETCOMPLETE && 1590 fdc->sc_state != RECALWAIT && 1591 fdc->sc_state != RECALCOMPLETE) 1592 fdc->sc_state = DORESET; 1593 } 1594 1595 /* Clear I task/status field */ 1596 fdc->sc_istatus = FDC_ISTATUS_NONE; 1597 fdc->sc_itask = FDC_ITASK_NONE; 1598 1599 loop: 1600 /* Is there a drive for the controller to do a transfer with? */ 1601 fd = fdc->sc_drives.tqh_first; 1602 if (fd == NULL) { 1603 fdc->sc_state = DEVIDLE; 1604 return 0; 1605 } 1606 1607 /* Is there a transfer to this drive? If not, deactivate drive. */ 1608 bp = BUFQ_PEEK(fd->sc_q); 1609 if (bp == NULL) { 1610 fd->sc_ops = 0; 1611 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1612 fd->sc_active = 0; 1613 goto loop; 1614 } 1615 1616 if (bp->b_flags & B_FORMAT) 1617 finfo = (struct ne7_fd_formb *)bp->b_data; 1618 1619 switch (fdc->sc_state) { 1620 case DEVIDLE: 1621 fdc->sc_errors = 0; 1622 fd->sc_skip = 0; 1623 fd->sc_bcount = bp->b_bcount; 1624 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1625 callout_stop(&fd->sc_motoroff_ch); 1626 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1627 fdc->sc_state = MOTORWAIT; 1628 return 1; 1629 } 1630 if ((fd->sc_flags & FD_MOTOR) == 0) { 1631 /* Turn on the motor, being careful about pairing. */ 1632 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1633 if (ofd && ofd->sc_flags & FD_MOTOR) { 1634 callout_stop(&ofd->sc_motoroff_ch); 1635 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1636 } 1637 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1638 fd_set_motor(fdc); 1639 fdc->sc_state = MOTORWAIT; 1640 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1641 /* Allow .25s for motor to stabilize. */ 1642 callout_reset(&fd->sc_motoron_ch, hz / 4, 1643 fd_motor_on, fd); 1644 } else { 1645 fd->sc_flags &= ~FD_MOTOR_WAIT; 1646 goto loop; 1647 } 1648 return 1; 1649 } 1650 /* Make sure the right drive is selected. */ 1651 fd_set_motor(fdc); 1652 1653 if (fdc_diskchange(fdc)) 1654 goto dodskchg; 1655 1656 /*FALLTHROUGH*/ 1657 case DOSEEK: 1658 doseek: 1659 if ((fdc->sc_flags & FDC_EIS) && 1660 (bp->b_flags & B_FORMAT) == 0) { 1661 fd->sc_cylin = bp->b_cylinder; 1662 /* We use implied seek */ 1663 goto doio; 1664 } 1665 1666 if (fd->sc_cylin == bp->b_cylinder) 1667 goto doio; 1668 1669 fd->sc_cylin = -1; 1670 fdc->sc_state = SEEKWAIT; 1671 fdc->sc_nstat = 0; 1672 1673 iostat_seek(fd->sc_dk.dk_stats); 1674 1675 disk_busy(&fd->sc_dk); 1676 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1677 1678 /* specify command */ 1679 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1680 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1681 /* XXX head load time == 6ms */ 1682 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1683 1684 fdc->sc_itask = FDC_ITASK_SENSEI; 1685 /* seek function */ 1686 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1687 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1688 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1689 return 1; 1690 1691 case DODSKCHG: 1692 dodskchg: 1693 /* 1694 * Disk change: force a seek operation by going to cyl 1 1695 * followed by a recalibrate. 1696 */ 1697 disk_busy(&fd->sc_dk); 1698 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1699 fd->sc_cylin = -1; 1700 fdc->sc_nstat = 0; 1701 fdc->sc_state = DSKCHGWAIT; 1702 1703 fdc->sc_itask = FDC_ITASK_SENSEI; 1704 /* seek function */ 1705 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1706 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1707 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1708 return 1; 1709 1710 case DSKCHGWAIT: 1711 callout_stop(&fdc->sc_timo_ch); 1712 disk_unbusy(&fd->sc_dk, 0, 0); 1713 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1714 cyl != 1 * fd->sc_type->step) { 1715 fdcstatus(fdc, "dskchg seek failed"); 1716 fdc->sc_state = DORESET; 1717 } else 1718 fdc->sc_state = DORECAL; 1719 1720 if (fdc_diskchange(fdc)) { 1721 printf("%s: cannot clear disk change status\n", 1722 fdc->sc_dev.dv_xname); 1723 fdc->sc_state = DORESET; 1724 } 1725 goto loop; 1726 1727 case DOIO: 1728 doio: 1729 if (finfo != NULL) 1730 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1731 (char *)finfo; 1732 type = fd->sc_type; 1733 sec = fd->sc_blkno % type->seccyl; 1734 nblks = type->seccyl - sec; 1735 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1736 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1737 fd->sc_nblks = nblks; 1738 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1739 head = sec / type->sectrac; 1740 sec -= head * type->sectrac; 1741 #ifdef DIAGNOSTIC 1742 {int block; 1743 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1744 sec; 1745 if (block != fd->sc_blkno) { 1746 printf("fdcintr: block %d != blkno %d\n", block, 1747 (int)fd->sc_blkno); 1748 #ifdef DDB 1749 Debugger(); 1750 #endif 1751 }} 1752 #endif 1753 read = bp->b_flags & B_READ; 1754 1755 /* Setup for pseudo DMA */ 1756 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1757 fdc->sc_tc = fd->sc_nbytes; 1758 1759 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1760 fdc->sc_reg_drs, type->rate); 1761 #ifdef FD_DEBUG 1762 if (fdc_debug > 1) 1763 printf("fdcstate: doio: %s drive %d " 1764 "track %d head %d sec %d nblks %d\n", 1765 finfo ? "format" : 1766 (read ? "read" : "write"), 1767 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1768 #endif 1769 fdc->sc_state = IOCOMPLETE; 1770 fdc->sc_itask = FDC_ITASK_DMA; 1771 fdc->sc_nstat = 0; 1772 1773 disk_busy(&fd->sc_dk); 1774 1775 /* allow 3 seconds for operation */ 1776 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1777 1778 if (finfo != NULL) { 1779 /* formatting */ 1780 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1781 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1782 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1783 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1784 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1785 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1786 } else { 1787 if (read) 1788 FDC_WRFIFO(fdc, NE7CMD_READ); 1789 else 1790 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1791 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1792 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1793 FDC_WRFIFO(fdc, head); 1794 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1795 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1796 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1797 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1798 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1799 } 1800 1801 return 1; /* will return later */ 1802 1803 case SEEKWAIT: 1804 callout_stop(&fdc->sc_timo_ch); 1805 fdc->sc_state = SEEKCOMPLETE; 1806 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1807 /* allow 1/50 second for heads to settle */ 1808 callout_reset(&fdc->sc_intr_ch, hz / 50, 1809 fdcpseudointr, fdc); 1810 return 1; /* will return later */ 1811 } 1812 /*FALLTHROUGH*/ 1813 case SEEKCOMPLETE: 1814 /* no data on seek */ 1815 disk_unbusy(&fd->sc_dk, 0, 0); 1816 1817 /* Make sure seek really happened. */ 1818 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1819 cyl != bp->b_cylinder * fd->sc_type->step) { 1820 #ifdef FD_DEBUG 1821 if (fdc_debug) 1822 fdcstatus(fdc, "seek failed"); 1823 #endif 1824 fdcretry(fdc); 1825 goto loop; 1826 } 1827 fd->sc_cylin = bp->b_cylinder; 1828 goto doio; 1829 1830 case IOTIMEDOUT: 1831 /* 1832 * Try to abort the I/O operation without resetting 1833 * the chip first. Poke TC and arrange to pick up 1834 * the timed out I/O command's status. 1835 */ 1836 fdc->sc_itask = FDC_ITASK_RESULT; 1837 fdc->sc_state = IOCLEANUPWAIT; 1838 fdc->sc_nstat = 0; 1839 /* 1/10 second should be enough */ 1840 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1841 FTC_FLIP; 1842 return 1; 1843 1844 case IOCLEANUPTIMEDOUT: 1845 case SEEKTIMEDOUT: 1846 case RECALTIMEDOUT: 1847 case RESETTIMEDOUT: 1848 case DSKCHGTIMEDOUT: 1849 fdcstatus(fdc, "timeout"); 1850 1851 /* All other timeouts always roll through to a chip reset */ 1852 fdcretry(fdc); 1853 1854 /* Force reset, no matter what fdcretry() says */ 1855 fdc->sc_state = DORESET; 1856 goto loop; 1857 1858 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1859 callout_stop(&fdc->sc_timo_ch); 1860 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1861 (bp->b_flags & B_READ)); 1862 fdcretry(fdc); 1863 goto loop; 1864 1865 case IOCOMPLETE: /* IO DONE, post-analyze */ 1866 callout_stop(&fdc->sc_timo_ch); 1867 1868 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1869 (bp->b_flags & B_READ)); 1870 1871 if (fdc->sc_nstat != 7 || st1 != 0 || 1872 ((st0 & 0xf8) != 0 && 1873 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1874 #ifdef FD_DEBUG 1875 if (fdc_debug) { 1876 fdcstatus(fdc, bp->b_flags & B_READ ? 1877 "read failed" : "write failed"); 1878 printf("blkno %lld nblks %d nstat %d tc %d\n", 1879 (long long)fd->sc_blkno, fd->sc_nblks, 1880 fdc->sc_nstat, fdc->sc_tc); 1881 } 1882 #endif 1883 if (fdc->sc_nstat == 7 && 1884 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1885 1886 /* 1887 * Silently retry overruns if no other 1888 * error bit is set. Adjust threshold. 1889 */ 1890 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1891 if (thr < 15) { 1892 thr++; 1893 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1894 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1895 #ifdef FD_DEBUG 1896 if (fdc_debug) 1897 printf("fdc: %d -> threshold\n", 1898 thr); 1899 #endif 1900 fdconf(fdc); 1901 fdc->sc_overruns = 0; 1902 } 1903 if (++fdc->sc_overruns < 3) { 1904 fdc->sc_state = DOIO; 1905 goto loop; 1906 } 1907 } 1908 fdcretry(fdc); 1909 goto loop; 1910 } 1911 if (fdc->sc_errors) { 1912 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1913 fd->sc_skip / FD_BSIZE(fd), 1914 (struct disklabel *)NULL); 1915 printf("\n"); 1916 fdc->sc_errors = 0; 1917 } else { 1918 if (--fdc->sc_overruns < -20) { 1919 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1920 if (thr > 0) { 1921 thr--; 1922 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1923 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1924 #ifdef FD_DEBUG 1925 if (fdc_debug) 1926 printf("fdc: %d -> threshold\n", 1927 thr); 1928 #endif 1929 fdconf(fdc); 1930 } 1931 fdc->sc_overruns = 0; 1932 } 1933 } 1934 fd->sc_blkno += fd->sc_nblks; 1935 fd->sc_skip += fd->sc_nbytes; 1936 fd->sc_bcount -= fd->sc_nbytes; 1937 if (finfo == NULL && fd->sc_bcount > 0) { 1938 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1939 goto doseek; 1940 } 1941 fdfinish(fd, bp); 1942 goto loop; 1943 1944 case DORESET: 1945 /* try a reset, keep motor on */ 1946 fd_set_motor(fdc); 1947 delay(100); 1948 fdc->sc_nstat = 0; 1949 fdc->sc_itask = FDC_ITASK_SENSEI; 1950 fdc->sc_state = RESETCOMPLETE; 1951 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1952 fdc_reset(fdc); 1953 return 1; /* will return later */ 1954 1955 case RESETCOMPLETE: 1956 callout_stop(&fdc->sc_timo_ch); 1957 fdconf(fdc); 1958 1959 /* FALLTHROUGH */ 1960 case DORECAL: 1961 fdc->sc_state = RECALWAIT; 1962 fdc->sc_itask = FDC_ITASK_SENSEI; 1963 fdc->sc_nstat = 0; 1964 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1965 /* recalibrate function */ 1966 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1967 FDC_WRFIFO(fdc, fd->sc_drive); 1968 return 1; /* will return later */ 1969 1970 case RECALWAIT: 1971 callout_stop(&fdc->sc_timo_ch); 1972 fdc->sc_state = RECALCOMPLETE; 1973 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1974 /* allow 1/30 second for heads to settle */ 1975 callout_reset(&fdc->sc_intr_ch, hz / 30, 1976 fdcpseudointr, fdc); 1977 return 1; /* will return later */ 1978 } 1979 1980 case RECALCOMPLETE: 1981 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1982 #ifdef FD_DEBUG 1983 if (fdc_debug) 1984 fdcstatus(fdc, "recalibrate failed"); 1985 #endif 1986 fdcretry(fdc); 1987 goto loop; 1988 } 1989 fd->sc_cylin = 0; 1990 goto doseek; 1991 1992 case MOTORWAIT: 1993 if (fd->sc_flags & FD_MOTOR_WAIT) 1994 return 1; /* time's not up yet */ 1995 goto doseek; 1996 1997 default: 1998 fdcstatus(fdc, "stray interrupt"); 1999 return 1; 2000 } 2001 #ifdef DIAGNOSTIC 2002 panic("fdcintr: impossible"); 2003 #endif 2004 2005 xxx: 2006 /* 2007 * We get here if the chip locks up in FDC_WRFIFO() 2008 * Cancel any operation and schedule a reset 2009 */ 2010 callout_stop(&fdc->sc_timo_ch); 2011 fdcretry(fdc); 2012 fdc->sc_state = DORESET; 2013 goto loop; 2014 2015 #undef st0 2016 #undef st1 2017 #undef cyl 2018 } 2019 2020 void 2021 fdcretry(struct fdc_softc *fdc) 2022 { 2023 struct fd_softc *fd; 2024 struct buf *bp; 2025 int error = EIO; 2026 2027 fd = fdc->sc_drives.tqh_first; 2028 bp = BUFQ_PEEK(fd->sc_q); 2029 2030 fdc->sc_overruns = 0; 2031 if (fd->sc_opts & FDOPT_NORETRY) 2032 goto fail; 2033 2034 switch (fdc->sc_errors) { 2035 case 0: 2036 if (fdc->sc_nstat == 7 && 2037 (fdc->sc_status[0] & 0xd8) == 0x40 && 2038 (fdc->sc_status[1] & 0x2) == 0x2) { 2039 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 2040 error = EROFS; 2041 goto failsilent; 2042 } 2043 /* try again */ 2044 fdc->sc_state = 2045 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2046 break; 2047 2048 case 1: case 2: case 3: 2049 /* didn't work; try recalibrating */ 2050 fdc->sc_state = DORECAL; 2051 break; 2052 2053 case 4: 2054 if (fdc->sc_nstat == 7 && 2055 fdc->sc_status[0] == 0 && 2056 fdc->sc_status[1] == 0 && 2057 fdc->sc_status[2] == 0) { 2058 /* 2059 * We've retried a few times and we've got 2060 * valid status and all three status bytes 2061 * are zero. Assume this condition is the 2062 * result of no disk loaded into the drive. 2063 */ 2064 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 2065 error = ENODEV; 2066 goto failsilent; 2067 } 2068 2069 /* still no go; reset the bastard */ 2070 fdc->sc_state = DORESET; 2071 break; 2072 2073 default: 2074 fail: 2075 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2076 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2077 fd->sc_skip / FD_BSIZE(fd), 2078 (struct disklabel *)NULL); 2079 printf("\n"); 2080 fdcstatus(fdc, "controller status"); 2081 } 2082 2083 failsilent: 2084 bp->b_error = error; 2085 fdfinish(fd, bp); 2086 } 2087 fdc->sc_errors++; 2088 } 2089 2090 int 2091 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2092 { 2093 struct fd_softc *fd; 2094 struct fdc_softc *fdc; 2095 struct fdformat_parms *form_parms; 2096 struct fdformat_cmd *form_cmd; 2097 struct ne7_fd_formb *fd_formb; 2098 int il[FD_MAX_NSEC + 1]; 2099 int unit; 2100 int i, j; 2101 int error; 2102 2103 unit = FDUNIT(dev); 2104 if (unit >= fd_cd.cd_ndevs) 2105 return ENXIO; 2106 2107 fd = fd_cd.cd_devs[FDUNIT(dev)]; 2108 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 2109 2110 switch (cmd) { 2111 case DIOCGDINFO: 2112 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2113 return 0; 2114 2115 case DIOCWLABEL: 2116 if ((flag & FWRITE) == 0) 2117 return EBADF; 2118 /* XXX do something */ 2119 return 0; 2120 2121 case DIOCWDINFO: 2122 if ((flag & FWRITE) == 0) 2123 return EBADF; 2124 2125 error = setdisklabel(fd->sc_dk.dk_label, 2126 (struct disklabel *)addr, 0, 2127 fd->sc_dk.dk_cpulabel); 2128 if (error) 2129 return error; 2130 2131 error = writedisklabel(dev, fdstrategy, 2132 fd->sc_dk.dk_label, 2133 fd->sc_dk.dk_cpulabel); 2134 return error; 2135 2136 case DIOCLOCK: 2137 /* 2138 * Nothing to do here, really. 2139 */ 2140 return 0; 2141 2142 case DIOCEJECT: 2143 if (*(int *)addr == 0) { 2144 int part = DISKPART(dev); 2145 /* 2146 * Don't force eject: check that we are the only 2147 * partition open. If so, unlock it. 2148 */ 2149 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2150 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2151 fd->sc_dk.dk_openmask) { 2152 return EBUSY; 2153 } 2154 } 2155 /* FALLTHROUGH */ 2156 case ODIOCEJECT: 2157 if (fdc->sc_flags & FDC_NOEJECT) 2158 return EINVAL; 2159 fd_do_eject(fd); 2160 return 0; 2161 2162 case FDIOCGETFORMAT: 2163 form_parms = (struct fdformat_parms *)addr; 2164 form_parms->fdformat_version = FDFORMAT_VERSION; 2165 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2166 form_parms->ncyl = fd->sc_type->cylinders; 2167 form_parms->nspt = fd->sc_type->sectrac; 2168 form_parms->ntrk = fd->sc_type->heads; 2169 form_parms->stepspercyl = fd->sc_type->step; 2170 form_parms->gaplen = fd->sc_type->gap2; 2171 form_parms->fillbyte = fd->sc_type->fillbyte; 2172 form_parms->interleave = fd->sc_type->interleave; 2173 switch (fd->sc_type->rate) { 2174 case FDC_500KBPS: 2175 form_parms->xfer_rate = 500 * 1024; 2176 break; 2177 case FDC_300KBPS: 2178 form_parms->xfer_rate = 300 * 1024; 2179 break; 2180 case FDC_250KBPS: 2181 form_parms->xfer_rate = 250 * 1024; 2182 break; 2183 default: 2184 return EINVAL; 2185 } 2186 return 0; 2187 2188 case FDIOCSETFORMAT: 2189 if ((flag & FWRITE) == 0) 2190 return EBADF; /* must be opened for writing */ 2191 2192 form_parms = (struct fdformat_parms *)addr; 2193 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2194 return EINVAL;/* wrong version of formatting prog */ 2195 2196 i = form_parms->nbps >> 7; 2197 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2198 i & ~(1 << (ffs(i)-1))) 2199 /* not a power-of-two multiple of 128 */ 2200 return EINVAL; 2201 2202 switch (form_parms->xfer_rate) { 2203 case 500 * 1024: 2204 fd->sc_type->rate = FDC_500KBPS; 2205 break; 2206 case 300 * 1024: 2207 fd->sc_type->rate = FDC_300KBPS; 2208 break; 2209 case 250 * 1024: 2210 fd->sc_type->rate = FDC_250KBPS; 2211 break; 2212 default: 2213 return EINVAL; 2214 } 2215 2216 if (form_parms->nspt > FD_MAX_NSEC || 2217 form_parms->fillbyte > 0xff || 2218 form_parms->interleave > 0xff) 2219 return EINVAL; 2220 fd->sc_type->sectrac = form_parms->nspt; 2221 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2222 return EINVAL; 2223 fd->sc_type->heads = form_parms->ntrk; 2224 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2225 fd->sc_type->secsize = ffs(i)-1; 2226 fd->sc_type->gap2 = form_parms->gaplen; 2227 fd->sc_type->cylinders = form_parms->ncyl; 2228 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2229 form_parms->nbps / DEV_BSIZE; 2230 fd->sc_type->step = form_parms->stepspercyl; 2231 fd->sc_type->fillbyte = form_parms->fillbyte; 2232 fd->sc_type->interleave = form_parms->interleave; 2233 return 0; 2234 2235 case FDIOCFORMAT_TRACK: 2236 if((flag & FWRITE) == 0) 2237 /* must be opened for writing */ 2238 return EBADF; 2239 form_cmd = (struct fdformat_cmd *)addr; 2240 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2241 /* wrong version of formatting prog */ 2242 return EINVAL; 2243 2244 if (form_cmd->head >= fd->sc_type->heads || 2245 form_cmd->cylinder >= fd->sc_type->cylinders) { 2246 return EINVAL; 2247 } 2248 2249 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2250 M_TEMP, M_NOWAIT); 2251 if (fd_formb == 0) 2252 return ENOMEM; 2253 2254 fd_formb->head = form_cmd->head; 2255 fd_formb->cyl = form_cmd->cylinder; 2256 fd_formb->transfer_rate = fd->sc_type->rate; 2257 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2258 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2259 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2260 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2261 2262 bzero(il, sizeof il); 2263 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2264 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2265 j++; 2266 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2267 j += fd->sc_type->interleave; 2268 } 2269 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2270 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2271 fd_formb->fd_formb_headno(i) = form_cmd->head; 2272 fd_formb->fd_formb_secno(i) = il[i + 1]; 2273 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2274 } 2275 2276 error = fdformat(dev, fd_formb, l->l_proc); 2277 free(fd_formb, M_TEMP); 2278 return error; 2279 2280 case FDIOCGETOPTS: /* get drive options */ 2281 *(int *)addr = fd->sc_opts; 2282 return 0; 2283 2284 case FDIOCSETOPTS: /* set drive options */ 2285 fd->sc_opts = *(int *)addr; 2286 return 0; 2287 2288 #ifdef FD_DEBUG 2289 case _IO('f', 100): 2290 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2291 fdcresult(fdc); 2292 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2293 for (i = 0; i < fdc->sc_nstat; i++) 2294 printf(" 0x%x", fdc->sc_status[i]); 2295 printf(">\n"); 2296 return 0; 2297 2298 case _IOW('f', 101, int): 2299 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2300 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2301 fdconf(fdc); 2302 return 0; 2303 2304 case _IO('f', 102): 2305 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2306 fdcresult(fdc); 2307 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2308 for (i=0; i< fdc->sc_nstat; i++) 2309 printf(" 0x%x", fdc->sc_status[i]); 2310 printf(">\n"); 2311 return 0; 2312 #endif 2313 default: 2314 return ENOTTY; 2315 } 2316 2317 #ifdef DIAGNOSTIC 2318 panic("fdioctl: impossible"); 2319 #endif 2320 } 2321 2322 int 2323 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2324 { 2325 int rv = 0; 2326 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2327 struct fd_type *type = fd->sc_type; 2328 struct buf *bp; 2329 2330 /* set up a buffer header for fdstrategy() */ 2331 bp = getiobuf_nowait(); 2332 if (bp == NULL) 2333 return ENOBUFS; 2334 2335 bp->b_vp = NULL; 2336 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2337 bp->b_proc = p; 2338 bp->b_dev = dev; 2339 2340 /* 2341 * Calculate a fake blkno, so fdstrategy() would initiate a 2342 * seek to the requested cylinder. 2343 */ 2344 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2345 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2346 / DEV_BSIZE; 2347 2348 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2349 bp->b_data = (void *)finfo; 2350 2351 #ifdef FD_DEBUG 2352 if (fdc_debug) { 2353 int i; 2354 2355 printf("fdformat: blkno 0x%llx count %d\n", 2356 (unsigned long long)bp->b_blkno, bp->b_bcount); 2357 2358 printf("\tcyl:\t%d\n", finfo->cyl); 2359 printf("\thead:\t%d\n", finfo->head); 2360 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2361 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2362 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2363 printf("\ttrack data:"); 2364 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2365 printf(" [c%d h%d s%d]", 2366 finfo->fd_formb_cylno(i), 2367 finfo->fd_formb_headno(i), 2368 finfo->fd_formb_secno(i) ); 2369 if (finfo->fd_formb_secsize(i) != 2) 2370 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2371 } 2372 printf("\n"); 2373 } 2374 #endif 2375 2376 /* now do the format */ 2377 fdstrategy(bp); 2378 2379 /* ...and wait for it to complete */ 2380 rv = biowait(bp); 2381 putiobuf(bp); 2382 return rv; 2383 } 2384 2385 void 2386 fdgetdisklabel(dev_t dev) 2387 { 2388 int unit = FDUNIT(dev), i; 2389 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2390 struct disklabel *lp = fd->sc_dk.dk_label; 2391 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2392 2393 bzero(lp, sizeof(struct disklabel)); 2394 bzero(lp, sizeof(struct cpu_disklabel)); 2395 2396 lp->d_type = DTYPE_FLOPPY; 2397 lp->d_secsize = FD_BSIZE(fd); 2398 lp->d_secpercyl = fd->sc_type->seccyl; 2399 lp->d_nsectors = fd->sc_type->sectrac; 2400 lp->d_ncylinders = fd->sc_type->cylinders; 2401 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2402 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2403 lp->d_rpm = 300; /* XXX like it matters... */ 2404 2405 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2406 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2407 lp->d_interleave = 1; 2408 lp->d_flags = D_REMOVABLE; 2409 2410 lp->d_partitions[RAW_PART].p_offset = 0; 2411 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2412 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2413 lp->d_npartitions = RAW_PART + 1; 2414 2415 lp->d_magic = DISKMAGIC; 2416 lp->d_magic2 = DISKMAGIC; 2417 lp->d_checksum = dkcksum(lp); 2418 2419 /* 2420 * Call the generic disklabel extraction routine. If there's 2421 * not a label there, fake it. 2422 */ 2423 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2424 strncpy(lp->d_packname, "default label", 2425 sizeof(lp->d_packname)); 2426 /* 2427 * Reset the partition info; it might have gotten 2428 * trashed in readdisklabel(). 2429 * 2430 * XXX Why do we have to do this? readdisklabel() 2431 * should be safe... 2432 */ 2433 for (i = 0; i < MAXPARTITIONS; ++i) { 2434 lp->d_partitions[i].p_offset = 0; 2435 if (i == RAW_PART) { 2436 lp->d_partitions[i].p_size = 2437 lp->d_secpercyl * lp->d_ncylinders; 2438 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2439 } else { 2440 lp->d_partitions[i].p_size = 0; 2441 lp->d_partitions[i].p_fstype = FS_UNUSED; 2442 } 2443 } 2444 lp->d_npartitions = RAW_PART + 1; 2445 } 2446 } 2447 2448 void 2449 fd_do_eject(struct fd_softc *fd) 2450 { 2451 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2452 2453 #ifdef SUN4 2454 if (CPU_ISSUN4C) { 2455 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2456 delay(10); 2457 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2458 return; 2459 } 2460 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2461 #endif 2462 bus_space_tag_t t = fdc->sc_bustag; 2463 bus_space_handle_t h = fdc->sc_handle; 2464 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2465 2466 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2467 delay(10); 2468 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2469 return; 2470 #ifdef SUN4 2471 } 2472 #endif 2473 } 2474 2475 /* ARGSUSED */ 2476 void 2477 fd_mountroot_hook(struct device *dev) 2478 { 2479 int c; 2480 2481 fd_do_eject((struct fd_softc *)dev); 2482 printf("Insert filesystem floppy and press return."); 2483 for (;;) { 2484 c = cngetc(); 2485 if ((c == '\r') || (c == '\n')) { 2486 printf("\n"); 2487 break; 2488 } 2489 } 2490 } 2491 2492 #ifdef MEMORY_DISK_HOOKS 2493 2494 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2495 2496 int 2497 fd_read_md_image(size_t *sizep, void **addrp) 2498 { 2499 struct buf buf, *bp = &buf; 2500 dev_t dev; 2501 off_t offset; 2502 char *addr; 2503 2504 dev = makedev(54,0); /* XXX */ 2505 2506 MALLOC(addr, void *, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2507 *addrp = addr; 2508 2509 if (fdopen(dev, 0, S_IFCHR, NULL)) 2510 panic("fd: mountroot: fdopen"); 2511 2512 offset = 0; 2513 2514 for (;;) { 2515 bp->b_dev = dev; 2516 bp->b_error = 0; 2517 bp->b_resid = 0; 2518 bp->b_proc = NULL; 2519 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2520 bp->b_blkno = btodb(offset); 2521 bp->b_bcount = DEV_BSIZE; 2522 bp->b_data = addr; 2523 fdstrategy(bp); 2524 while ((bp->b_flags & B_DONE) == 0) { 2525 tsleep((void *)bp, PRIBIO + 1, "physio", 0); 2526 } 2527 if (bp->b_error) 2528 panic("fd: mountroot: fdread error %d", bp->b_error); 2529 2530 if (bp->b_resid != 0) 2531 break; 2532 2533 addr += DEV_BSIZE; 2534 offset += DEV_BSIZE; 2535 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2536 break; 2537 } 2538 (void)fdclose(dev, 0, S_IFCHR, NULL); 2539 *sizep = offset; 2540 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2541 return 0; 2542 } 2543 #endif /* MEMORY_DISK_HOOKS */ 2544 2545 static void 2546 fd_set_properties(struct fd_softc *fd) 2547 { 2548 prop_dictionary_t disk_info, odisk_info, geom; 2549 struct fd_type *fdt; 2550 int secsize; 2551 2552 fdt = fd->sc_deftype; 2553 2554 disk_info = prop_dictionary_create(); 2555 2556 geom = prop_dictionary_create(); 2557 2558 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2559 fdt->size); 2560 2561 switch (fdt->secsize) { 2562 case 2: 2563 secsize = 512; 2564 break; 2565 case 3: 2566 secsize = 1024; 2567 break; 2568 default: 2569 secsize = 0; 2570 } 2571 2572 prop_dictionary_set_uint32(geom, "sector-size", 2573 secsize); 2574 2575 prop_dictionary_set_uint16(geom, "sectors-per-track", 2576 fdt->sectrac); 2577 2578 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2579 fdt->heads); 2580 2581 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2582 fdt->cylinders); 2583 2584 prop_dictionary_set(disk_info, "geometry", geom); 2585 prop_object_release(geom); 2586 2587 prop_dictionary_set(device_properties(&fd->sc_dv), 2588 "disk-info", disk_info); 2589 2590 /* 2591 * Don't release disk_info here; we keep a reference to it. 2592 * disk_detach() will release it when we go away. 2593 */ 2594 2595 odisk_info = fd->sc_dk.dk_info; 2596 fd->sc_dk.dk_info = disk_info; 2597 if (odisk_info) 2598 prop_object_release(odisk_info); 2599 } 2600
Indexes created Tue Sep 30 07:10:03 GMT 2025