fdc.c revision 1.12
1 /* $NetBSD: fdc.c,v 1.12 2007/03/27 10:17:48 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 1.12 2007/03/27 10:17:48 jnemeth 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/malloc.h> 130 #include <sys/proc.h> 131 #include <sys/uio.h> 132 #include <sys/stat.h> 133 #include <sys/syslog.h> 134 #include <sys/queue.h> 135 #include <sys/conf.h> 136 137 #include <dev/cons.h> 138 139 #include <uvm/uvm_extern.h> 140 141 #include <machine/autoconf.h> 142 #include <machine/intr.h> 143 144 #ifdef SUN4 145 #include <sparc/sparc/auxreg.h> 146 #include <sparc/dev/fdreg.h> 147 #include <sparc/dev/fdvar.h> 148 #elif SUN4U 149 #include <dev/ebus/ebusreg.h> 150 #include <dev/ebus/ebusvar.h> 151 /* #include <sparc/sparc/auxreg.h> */ 152 #include <sparc64/dev/auxioreg.h> 153 #include <sparc64/dev/auxiovar.h> 154 #include <sparc64/dev/fdcreg.h> 155 #include <sparc64/dev/fdcvar.h> 156 #endif 157 158 #include <prop/proplib.h> 159 160 #define FDUNIT(dev) (minor(dev) / 8) 161 #define FDTYPE(dev) (minor(dev) % 8) 162 163 /* (mis)use device use flag to identify format operation */ 164 #define B_FORMAT B_DEVPRIVATE 165 166 #define FD_DEBUG 167 #ifdef FD_DEBUG 168 int fdc_debug = 0; 169 #endif 170 171 enum fdc_state { 172 DEVIDLE = 0, 173 MOTORWAIT, /* 1 */ 174 DOSEEK, /* 2 */ 175 SEEKWAIT, /* 3 */ 176 SEEKTIMEDOUT, /* 4 */ 177 SEEKCOMPLETE, /* 5 */ 178 DOIO, /* 6 */ 179 IOCOMPLETE, /* 7 */ 180 IOTIMEDOUT, /* 8 */ 181 IOCLEANUPWAIT, /* 9 */ 182 IOCLEANUPTIMEDOUT,/*10 */ 183 DORESET, /* 11 */ 184 RESETCOMPLETE, /* 12 */ 185 RESETTIMEDOUT, /* 13 */ 186 DORECAL, /* 14 */ 187 RECALWAIT, /* 15 */ 188 RECALTIMEDOUT, /* 16 */ 189 RECALCOMPLETE, /* 17 */ 190 DODSKCHG, /* 18 */ 191 DSKCHGWAIT, /* 19 */ 192 DSKCHGTIMEDOUT, /* 20 */ 193 }; 194 195 /* software state, per controller */ 196 struct fdc_softc { 197 struct device sc_dev; /* boilerplate */ 198 bus_space_tag_t sc_bustag; 199 200 struct callout sc_timo_ch; /* timeout callout */ 201 struct callout sc_intr_ch; /* pseudo-intr callout */ 202 203 struct fd_softc *sc_fd[4]; /* pointers to children */ 204 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 205 enum fdc_state sc_state; 206 int sc_flags; 207 #define FDC_82077 0x01 208 #define FDC_NEEDHEADSETTLE 0x02 209 #define FDC_EIS 0x04 210 #define FDC_NEEDMOTORWAIT 0x08 211 #define FDC_NOEJECT 0x10 212 #define FDC_EBUS 0x20 213 int sc_errors; /* number of retries so far */ 214 int sc_overruns; /* number of DMA overruns */ 215 int sc_cfg; /* current configuration */ 216 struct fdcio sc_io; 217 #define sc_handle sc_io.fdcio_handle 218 #define sc_reg_msr sc_io.fdcio_reg_msr 219 #define sc_reg_fifo sc_io.fdcio_reg_fifo 220 #define sc_reg_dor sc_io.fdcio_reg_dor 221 #define sc_reg_dir sc_io.fdcio_reg_dir 222 #define sc_reg_drs sc_io.fdcio_reg_msr 223 #define sc_itask sc_io.fdcio_itask 224 #define sc_istatus sc_io.fdcio_istatus 225 #define sc_data sc_io.fdcio_data 226 #define sc_tc sc_io.fdcio_tc 227 #define sc_nstat sc_io.fdcio_nstat 228 #define sc_status sc_io.fdcio_status 229 #define sc_intrcnt sc_io.fdcio_intrcnt 230 231 void *sc_sicookie; /* softintr(9) cookie */ 232 }; 233 234 #ifdef SUN4 235 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 236 #endif 237 238 /* controller driver configuration */ 239 #ifdef SUN4 240 int fdcmatch_mainbus(struct device *, struct cfdata *, void*); 241 int fdcmatch_obio(struct device *, struct cfdata *, void *); 242 void fdcattach_mainbus(struct device *, struct device *, void *); 243 void fdcattach_obio(struct device *, struct device *, void *); 244 #elif SUN4U 245 int fdcmatch_sbus(struct device *, struct cfdata *, void *); 246 int fdcmatch_ebus(struct device *, struct cfdata *, void *); 247 void fdcattach_sbus(struct device *, struct device *, void *); 248 void fdcattach_ebus(struct device *, struct device *, void *); 249 #endif 250 251 int fdcattach(struct fdc_softc *, int); 252 253 #ifdef SUN4 254 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 255 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 256 257 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 258 fdcmatch_obio, fdcattach_obio, NULL, NULL); 259 #elif SUN4U 260 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc), 261 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 262 263 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc), 264 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 265 #endif 266 267 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 268 269 /* 270 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 271 * we tell them apart. 272 */ 273 struct fd_type { 274 int sectrac; /* sectors per track */ 275 int heads; /* number of heads */ 276 int seccyl; /* sectors per cylinder */ 277 int secsize; /* size code for sectors */ 278 int datalen; /* data len when secsize = 0 */ 279 int steprate; /* step rate and head unload time */ 280 int gap1; /* gap len between sectors */ 281 int gap2; /* formatting gap */ 282 int cylinders; /* total num of cylinders */ 283 int size; /* size of disk in sectors */ 284 int step; /* steps per cylinder */ 285 int rate; /* transfer speed code */ 286 int fillbyte; /* format fill byte */ 287 int interleave; /* interleave factor (formatting) */ 288 const char *name; 289 }; 290 291 /* The order of entries in the following table is important -- BEWARE! */ 292 struct fd_type fd_types[] = { 293 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 294 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 295 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 296 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 297 }; 298 299 /* software state, per disk (with up to 4 disks per ctlr) */ 300 struct fd_softc { 301 struct device sc_dv; /* generic device info */ 302 struct disk sc_dk; /* generic disk info */ 303 304 struct fd_type *sc_deftype; /* default type descriptor */ 305 struct fd_type *sc_type; /* current type descriptor */ 306 307 struct callout sc_motoron_ch; 308 struct callout sc_motoroff_ch; 309 310 daddr_t sc_blkno; /* starting block number */ 311 int sc_bcount; /* byte count left */ 312 int sc_skip; /* bytes already transferred */ 313 int sc_nblks; /* number of blocks currently transferring */ 314 int sc_nbytes; /* number of bytes currently transferring */ 315 316 int sc_drive; /* physical unit number */ 317 int sc_flags; 318 #define FD_OPEN 0x01 /* it's open */ 319 #define FD_MOTOR 0x02 /* motor should be on */ 320 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 321 int sc_cylin; /* where we think the head is */ 322 int sc_opts; /* user-set options */ 323 324 void *sc_sdhook; /* shutdownhook cookie */ 325 326 TAILQ_ENTRY(fd_softc) sc_drivechain; 327 int sc_ops; /* I/O ops since last switch */ 328 struct bufq_state *sc_q;/* pending I/O requests */ 329 int sc_active; /* number of active I/O requests */ 330 }; 331 332 /* floppy driver configuration */ 333 int fdmatch(struct device *, struct cfdata *, void *); 334 void fdattach(struct device *, struct device *, void *); 335 336 CFATTACH_DECL(fd, sizeof(struct fd_softc), 337 fdmatch, fdattach, NULL, NULL); 338 339 extern struct cfdriver fd_cd; 340 341 dev_type_open(fdopen); 342 dev_type_close(fdclose); 343 dev_type_read(fdread); 344 dev_type_write(fdwrite); 345 dev_type_ioctl(fdioctl); 346 dev_type_strategy(fdstrategy); 347 348 const struct bdevsw fd_bdevsw = { 349 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 350 }; 351 352 const struct cdevsw fd_cdevsw = { 353 fdopen, fdclose, fdread, fdwrite, fdioctl, 354 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 355 }; 356 357 void fdgetdisklabel(dev_t); 358 int fd_get_parms(struct fd_softc *); 359 void fdstrategy(struct buf *); 360 void fdstart(struct fd_softc *); 361 int fdprint(void *, const char *); 362 363 struct dkdriver fddkdriver = { fdstrategy, NULL }; 364 365 struct fd_type *fd_nvtotype(char *, int, int); 366 void fd_set_motor(struct fdc_softc *); 367 void fd_motor_off(void *); 368 void fd_motor_on(void *); 369 int fdcresult(struct fdc_softc *); 370 int fdc_wrfifo(struct fdc_softc *, uint8_t); 371 void fdcstart(struct fdc_softc *); 372 void fdcstatus(struct fdc_softc *, const char *); 373 void fdc_reset(struct fdc_softc *); 374 int fdc_diskchange(struct fdc_softc *); 375 void fdctimeout(void *); 376 void fdcpseudointr(void *); 377 int fdc_c_hwintr(void *); 378 void fdchwintr(void); 379 void fdcswintr(void *); 380 int fdcstate(struct fdc_softc *); 381 void fdcretry(struct fdc_softc *); 382 void fdfinish(struct fd_softc *, struct buf *); 383 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 384 void fd_do_eject(struct fd_softc *); 385 void fd_mountroot_hook(struct device *); 386 static int fdconf(struct fdc_softc *); 387 static void establish_chip_type( 388 struct fdc_softc *, 389 bus_space_tag_t, 390 bus_addr_t, 391 bus_size_t, 392 bus_space_handle_t); 393 static void fd_set_properties(struct fd_softc *); 394 395 #ifdef MEMORY_DISK_HOOKS 396 int fd_read_md_image(size_t *, void **); 397 #endif 398 399 #ifdef SUN4 400 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 401 402 int 403 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 404 { 405 struct mainbus_attach_args *ma = aux; 406 407 /* 408 * Floppy controller is on mainbus on sun4c. 409 */ 410 if (!CPU_ISSUN4C) 411 return 0; 412 413 /* sun4c PROMs call the controller "fd" */ 414 if (strcmp("fd", ma->ma_name) != 0) 415 return 0; 416 417 return bus_space_probe(ma->ma_bustag, 418 ma->ma_paddr, 419 1, /* probe size */ 420 0, /* offset */ 421 0, /* flags */ 422 NULL, NULL); 423 } 424 425 int 426 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 427 { 428 union obio_attach_args *uoba = aux; 429 struct sbus_attach_args *sa; 430 431 /* 432 * Floppy controller is on obio on sun4m. 433 */ 434 if (uoba->uoba_isobio4 != 0) 435 return 0; 436 437 sa = &uoba->uoba_sbus; 438 439 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 440 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 441 return 0; 442 443 return bus_space_probe(sa->sa_bustag, 444 sbus_bus_addr(sa->sa_bustag, 445 sa->sa_slot, sa->sa_offset), 446 1, /* probe size */ 447 0, /* offset */ 448 0, /* flags */ 449 NULL, NULL); 450 } 451 452 #elif SUN4U 453 454 int 455 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux) 456 { 457 struct sbus_attach_args *sa = aux; 458 459 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 460 } 461 462 int 463 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux) 464 { 465 struct ebus_attach_args *ea = aux; 466 467 return strcmp("fdthree", ea->ea_name) == 0; 468 } 469 #endif 470 471 static void 472 establish_chip_type(struct fdc_softc *fdc, 473 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 474 bus_space_handle_t handle) 475 { 476 uint8_t v; 477 478 /* 479 * This hack from Chris Torek: apparently DOR really 480 * addresses MSR/DRS on a 82072. 481 * We used to rely on the VERSION command to tell the 482 * difference (which did not work). 483 */ 484 485 /* First, check the size of the register bank */ 486 if (size < 8) 487 /* It isn't a 82077 */ 488 return; 489 490 #ifdef SUN4 491 /* Then probe the DOR register offset */ 492 if (bus_space_probe(tag, addr, 493 1, /* probe size */ 494 FDREG77_DOR, /* offset */ 495 0, /* flags */ 496 NULL, NULL) == 0) { 497 498 /* It isn't a 82077 */ 499 return; 500 } 501 #endif 502 503 v = bus_space_read_1(tag, handle, FDREG77_DOR); 504 if (v == NE7_RQM) { 505 /* 506 * Value in DOR looks like it's really MSR 507 */ 508 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 509 v = bus_space_read_1(tag, handle, FDREG77_DOR); 510 if (v == NE7_RQM) { 511 /* 512 * The value in the DOR didn't stick; 513 * it isn't a 82077 514 */ 515 return; 516 } 517 } 518 519 fdc->sc_flags |= FDC_82077; 520 } 521 522 /* 523 * Arguments passed between fdcattach and fdprobe. 524 */ 525 struct fdc_attach_args { 526 int fa_drive; 527 struct fd_type *fa_deftype; 528 }; 529 530 /* 531 * Print the location of a disk drive (called just before attaching the 532 * the drive). If `fdc' is not NULL, the drive was found but was not 533 * in the system config file; print the drive name as well. 534 * Return QUIET (config_find ignores this if the device was configured) to 535 * avoid printing `fdN not configured' messages. 536 */ 537 int 538 fdprint(void *aux, const char *fdc) 539 { 540 register struct fdc_attach_args *fa = aux; 541 542 if (!fdc) 543 aprint_normal(" drive %d", fa->fa_drive); 544 return QUIET; 545 } 546 547 /* 548 * Configure several parameters and features on the FDC. 549 * Return 0 on success. 550 */ 551 static int 552 fdconf(struct fdc_softc *fdc) 553 { 554 int vroom; 555 556 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 557 return -1; 558 559 /* 560 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 561 * the PROM thinks is appropriate. 562 */ 563 if ((vroom = fdc->sc_status[7]) == 0) 564 vroom = 0x64; 565 566 /* Configure controller to use FIFO and Implied Seek */ 567 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 568 return -1; 569 if (fdc_wrfifo(fdc, vroom) != 0) 570 return -1; 571 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 572 return -1; 573 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 574 return -1; 575 /* No result phase for the NE7CMD_CFG command */ 576 577 if ((fdc->sc_flags & FDC_82077) != 0) { 578 /* Lock configuration across soft resets. */ 579 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 580 fdcresult(fdc) != 1) { 581 #ifdef DEBUG 582 printf("fdconf: CFGLOCK failed"); 583 #endif 584 return -1; 585 } 586 } 587 588 return 0; 589 #if 0 590 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 591 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 592 if (fdc_debug) 593 printf("[version cmd]"); 594 } 595 #endif 596 } 597 598 #ifdef SUN4 599 void 600 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 601 { 602 struct fdc_softc *fdc = (void *)self; 603 struct mainbus_attach_args *ma = aux; 604 605 fdc->sc_bustag = ma->ma_bustag; 606 607 if (bus_space_map( 608 ma->ma_bustag, 609 ma->ma_paddr, 610 ma->ma_size, 611 BUS_SPACE_MAP_LINEAR, 612 &fdc->sc_handle) != 0) { 613 printf("%s: cannot map registers\n", self->dv_xname); 614 return; 615 } 616 617 establish_chip_type(fdc, 618 ma->ma_bustag, 619 ma->ma_paddr, 620 ma->ma_size, 621 fdc->sc_handle); 622 623 if (fdcattach(fdc, ma->ma_pri) != 0) 624 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 625 } 626 627 void 628 fdcattach_obio(struct device *parent, struct device *self, void *aux) 629 { 630 struct fdc_softc *fdc = (void *)self; 631 union obio_attach_args *uoba = aux; 632 struct sbus_attach_args *sa = &uoba->uoba_sbus; 633 634 if (sa->sa_nintr == 0) { 635 printf(": no interrupt line configured\n"); 636 return; 637 } 638 639 fdc->sc_bustag = sa->sa_bustag; 640 641 if (sbus_bus_map(sa->sa_bustag, 642 sa->sa_slot, sa->sa_offset, sa->sa_size, 643 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 644 printf("%s: cannot map control registers\n", 645 self->dv_xname); 646 return; 647 } 648 649 establish_chip_type(fdc, 650 sa->sa_bustag, 651 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 652 sa->sa_size, 653 fdc->sc_handle); 654 655 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 656 printf(": no drives attached\n"); 657 return; 658 } 659 660 if (fdcattach(fdc, sa->sa_pri) != 0) 661 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 662 } 663 664 #elif SUN4U 665 666 void 667 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 668 { 669 struct fdc_softc *fdc = (void *)self; 670 struct sbus_attach_args *sa = aux; 671 672 if (sa->sa_nintr == 0) { 673 printf(": no interrupt line configured\n"); 674 return; 675 } 676 677 if (auxio_fd_control(0) != 0) { 678 printf(": can't attach before auxio\n"); 679 return; 680 } 681 682 fdc->sc_bustag = sa->sa_bustag; 683 684 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 685 sa->sa_size, 0, &fdc->sc_handle) != 0) { 686 printf(": cannot map control registers\n"); 687 return; 688 } 689 690 establish_chip_type(fdc, 691 sa->sa_bustag, 692 BUS_ADDR(sa->sa_slot, sa->sa_offset), 693 sa->sa_size, 694 fdc->sc_handle); 695 696 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 697 printf(": no drives attached\n"); 698 return; 699 } 700 701 if (prom_getproplen(sa->sa_node, "manual") >= 0) 702 fdc->sc_flags |= FDC_NOEJECT; 703 704 705 if (fdcattach(fdc, sa->sa_pri) != 0) 706 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 707 } 708 709 void 710 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 711 { 712 struct fdc_softc *fdc = (void *)self; 713 struct ebus_attach_args *ea = aux; 714 int map_vaddr; 715 716 if (ea->ea_nintr == 0) { 717 printf(": no interrupt line configured\n"); 718 return; 719 } 720 721 if (ea->ea_nreg < 3) { 722 printf(": expected 3 registers, only got %d\n", 723 ea->ea_nreg); 724 return; 725 } 726 727 fdc->sc_bustag = ea->ea_bustag; 728 729 if (ea->ea_nvaddr > 0) { 730 sparc_promaddr_to_handle(ea->ea_bustag, 731 ea->ea_vaddr[0], &fdc->sc_handle); 732 map_vaddr = 1; 733 } else if (bus_space_map(fdc->sc_bustag, 734 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 735 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 736 map_vaddr = 0; 737 } else { 738 printf(": can't map control registers\n"); 739 return; 740 } 741 742 establish_chip_type(fdc, 743 fdc->sc_bustag, 744 map_vaddr ? ea->ea_vaddr[0] : 745 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 746 ea->ea_reg[0].size, 747 fdc->sc_handle); 748 749 fdc->sc_flags |= FDC_EBUS; 750 751 if (prom_getproplen(ea->ea_node, "manual") >= 0) 752 fdc->sc_flags |= FDC_NOEJECT; 753 754 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 755 if (map_vaddr == 0) 756 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 757 ea->ea_reg[0].size); 758 } 759 #endif 760 761 int 762 fdcattach(struct fdc_softc *fdc, int pri) 763 { 764 struct fdc_attach_args fa; 765 int drive_attached; 766 char code; 767 768 callout_init(&fdc->sc_timo_ch); 769 callout_init(&fdc->sc_intr_ch); 770 771 fdc->sc_state = DEVIDLE; 772 fdc->sc_itask = FDC_ITASK_NONE; 773 fdc->sc_istatus = FDC_ISTATUS_NONE; 774 fdc->sc_flags |= FDC_EIS; 775 TAILQ_INIT(&fdc->sc_drives); 776 777 if ((fdc->sc_flags & FDC_82077) != 0) { 778 fdc->sc_reg_msr = FDREG77_MSR; 779 fdc->sc_reg_fifo = FDREG77_FIFO; 780 fdc->sc_reg_dor = FDREG77_DOR; 781 fdc->sc_reg_dir = FDREG77_DIR; 782 code = '7'; 783 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 784 } else { 785 fdc->sc_reg_msr = FDREG72_MSR; 786 fdc->sc_reg_fifo = FDREG72_FIFO; 787 fdc->sc_reg_dor = 0; 788 code = '2'; 789 } 790 791 /* 792 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 793 * Note: CFG_EFIFO is active-low, initial threshold value: 8 794 */ 795 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 796 if (fdconf(fdc) != 0) { 797 printf(": no drives attached\n"); 798 return -1; 799 } 800 801 #ifdef SUN4 802 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 803 #elif SUN4U 804 fdc->sc_sicookie = softintr_establish(IPL_FDSOFT, fdcswintr, fdc); 805 #endif 806 if (fdc->sc_sicookie == NULL) { 807 printf("\n%s: cannot register soft interrupt handler\n", 808 fdc->sc_dev.dv_xname); 809 callout_stop(&fdc->sc_timo_ch); 810 callout_stop(&fdc->sc_intr_ch); 811 return -1; 812 } 813 #ifdef SUN4 814 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 815 #elif SUN4U 816 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 817 if (fdc->sc_flags & FDC_NOEJECT) 818 printf(": manual eject"); 819 printf("\n"); 820 #endif 821 822 #ifdef SUN4 823 fdciop = &fdc->sc_io; 824 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 825 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 826 #elif SUN4U 827 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 828 fdc_c_hwintr, fdc) == NULL) { 829 #endif 830 printf("\n%s: cannot register interrupt handler\n", 831 fdc->sc_dev.dv_xname); 832 callout_stop(&fdc->sc_timo_ch); 833 callout_stop(&fdc->sc_intr_ch); 834 softintr_disestablish(fdc->sc_sicookie); 835 return -1; 836 } 837 838 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 839 fdc->sc_dev.dv_xname, "intr"); 840 841 /* physical limit: four drives per controller. */ 842 drive_attached = 0; 843 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 844 fa.fa_deftype = NULL; /* unknown */ 845 fa.fa_deftype = &fd_types[0]; /* XXX */ 846 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 847 drive_attached = 1; 848 } 849 850 if (drive_attached == 0) { 851 /* XXX - dis-establish interrupts here */ 852 /* return -1; */ 853 } 854 855 return 0; 856 } 857 858 int 859 fdmatch(struct device *parent, struct cfdata *match, void *aux) 860 { 861 struct fdc_softc *fdc = (void *)parent; 862 bus_space_tag_t t = fdc->sc_bustag; 863 bus_space_handle_t h = fdc->sc_handle; 864 struct fdc_attach_args *fa = aux; 865 int drive = fa->fa_drive; 866 int n, ok; 867 868 if (drive > 0) 869 /* XXX - for now, punt on more than one drive */ 870 return 0; 871 872 if ((fdc->sc_flags & FDC_82077) != 0) { 873 /* select drive and turn on motor */ 874 bus_space_write_1(t, h, fdc->sc_reg_dor, 875 drive | FDO_FRST | FDO_MOEN(drive)); 876 /* wait for motor to spin up */ 877 delay(250000); 878 #ifdef SUN4 879 } else { 880 auxregbisc(AUXIO4C_FDS, 0); 881 #endif 882 } 883 fdc->sc_nstat = 0; 884 fdc_wrfifo(fdc, NE7CMD_RECAL); 885 fdc_wrfifo(fdc, drive); 886 887 /* Wait for recalibration to complete */ 888 for (n = 0; n < 10000; n++) { 889 uint8_t v; 890 891 delay(1000); 892 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 893 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 894 /* wait a bit longer till device *really* is ready */ 895 delay(100000); 896 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 897 break; 898 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 899 /* 900 * Got `invalid command'; we interpret it 901 * to mean that the re-calibrate hasn't in 902 * fact finished yet 903 */ 904 continue; 905 break; 906 } 907 } 908 n = fdc->sc_nstat; 909 #ifdef FD_DEBUG 910 if (fdc_debug) { 911 int i; 912 printf("fdprobe: %d stati:", n); 913 for (i = 0; i < n; i++) 914 printf(" 0x%x", fdc->sc_status[i]); 915 printf("\n"); 916 } 917 #endif 918 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 919 920 /* turn off motor */ 921 if ((fdc->sc_flags & FDC_82077) != 0) { 922 /* deselect drive and turn motor off */ 923 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 924 #ifdef SUN4 925 } else { 926 auxregbisc(0, AUXIO4C_FDS); 927 #endif 928 } 929 930 return ok; 931 } 932 933 /* 934 * Controller is working, and drive responded. Attach it. 935 */ 936 void 937 fdattach(struct device *parent, struct device *self, void *aux) 938 { 939 struct fdc_softc *fdc = (void *)parent; 940 struct fd_softc *fd = (void *)self; 941 struct fdc_attach_args *fa = aux; 942 struct fd_type *type = fa->fa_deftype; 943 int drive = fa->fa_drive; 944 945 callout_init(&fd->sc_motoron_ch); 946 callout_init(&fd->sc_motoroff_ch); 947 948 /* XXX Allow `flags' to override device type? */ 949 950 if (type) 951 printf(": %s %d cyl, %d head, %d sec\n", type->name, 952 type->cylinders, type->heads, type->sectrac); 953 else 954 printf(": density unknown\n"); 955 956 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 957 fd->sc_cylin = -1; 958 fd->sc_drive = drive; 959 fd->sc_deftype = type; 960 fdc->sc_fd[drive] = fd; 961 962 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 963 fdc_wrfifo(fdc, type->steprate); 964 /* XXX head load time == 6ms */ 965 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 966 967 /* 968 * Initialize and attach the disk structure. 969 */ 970 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 971 fd->sc_dk.dk_driver = &fddkdriver; 972 disk_attach(&fd->sc_dk); 973 974 /* 975 * Establish a mountroot_hook anyway in case we booted 976 * with RB_ASKNAME and get selected as the boot device. 977 */ 978 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 979 980 fd_set_properties(fd); 981 982 /* Make sure the drive motor gets turned off at shutdown time. */ 983 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 984 } 985 986 inline struct fd_type * 987 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 988 { 989 int type = FDTYPE(dev); 990 991 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 992 return NULL; 993 return type ? &fd_types[type - 1] : fd->sc_deftype; 994 } 995 996 void 997 fdstrategy(struct buf *bp) 998 { 999 struct fd_softc *fd; 1000 int unit = FDUNIT(bp->b_dev); 1001 int sz; 1002 int s; 1003 1004 /* Valid unit, controller, and request? */ 1005 if (unit >= fd_cd.cd_ndevs || 1006 (fd = fd_cd.cd_devs[unit]) == 0 || 1007 bp->b_blkno < 0 || 1008 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1009 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1010 (bp->b_flags & B_FORMAT) == 0)) { 1011 bp->b_error = EINVAL; 1012 goto bad; 1013 } 1014 1015 /* If it's a null transfer, return immediately. */ 1016 if (bp->b_bcount == 0) 1017 goto done; 1018 1019 sz = howmany(bp->b_bcount, DEV_BSIZE); 1020 1021 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1022 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1023 - bp->b_blkno; 1024 if (sz == 0) { 1025 /* If exactly at end of disk, return EOF. */ 1026 bp->b_resid = bp->b_bcount; 1027 goto done; 1028 } 1029 if (sz < 0) { 1030 /* If past end of disk, return EINVAL. */ 1031 bp->b_error = EINVAL; 1032 goto bad; 1033 } 1034 /* Otherwise, truncate request. */ 1035 bp->b_bcount = sz << DEV_BSHIFT; 1036 } 1037 1038 bp->b_rawblkno = bp->b_blkno; 1039 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1040 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1041 1042 #ifdef FD_DEBUG 1043 if (fdc_debug > 1) 1044 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1045 (long long)bp->b_blkno, bp->b_bcount, 1046 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1047 #endif 1048 1049 /* Queue transfer on drive, activate drive and controller if idle. */ 1050 s = splbio(); 1051 BUFQ_PUT(fd->sc_q, bp); 1052 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1053 if (fd->sc_active == 0) 1054 fdstart(fd); 1055 #ifdef DIAGNOSTIC 1056 else { 1057 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1058 if (fdc->sc_state == DEVIDLE) { 1059 printf("fdstrategy: controller inactive\n"); 1060 fdcstart(fdc); 1061 } 1062 } 1063 #endif 1064 splx(s); 1065 return; 1066 1067 bad: 1068 bp->b_flags |= B_ERROR; 1069 done: 1070 /* Toss transfer; we're done early. */ 1071 biodone(bp); 1072 } 1073 1074 void 1075 fdstart(struct fd_softc *fd) 1076 { 1077 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1078 int active = fdc->sc_drives.tqh_first != 0; 1079 1080 /* Link into controller queue. */ 1081 fd->sc_active = 1; 1082 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1083 1084 /* If controller not already active, start it. */ 1085 if (!active) 1086 fdcstart(fdc); 1087 } 1088 1089 void 1090 fdfinish(struct fd_softc *fd, struct buf *bp) 1091 { 1092 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1093 1094 /* 1095 * Move this drive to the end of the queue to give others a `fair' 1096 * chance. We only force a switch if N operations are completed while 1097 * another drive is waiting to be serviced, since there is a long motor 1098 * startup delay whenever we switch. 1099 */ 1100 (void)BUFQ_GET(fd->sc_q); 1101 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1102 fd->sc_ops = 0; 1103 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1104 if (BUFQ_PEEK(fd->sc_q) != NULL) { 1105 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1106 } else 1107 fd->sc_active = 0; 1108 } 1109 bp->b_resid = fd->sc_bcount; 1110 fd->sc_skip = 0; 1111 1112 biodone(bp); 1113 /* turn off motor 5s from now */ 1114 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1115 fdc->sc_state = DEVIDLE; 1116 } 1117 1118 void 1119 fdc_reset(struct fdc_softc *fdc) 1120 { 1121 bus_space_tag_t t = fdc->sc_bustag; 1122 bus_space_handle_t h = fdc->sc_handle; 1123 1124 if ((fdc->sc_flags & FDC_82077) != 0) { 1125 bus_space_write_1(t, h, fdc->sc_reg_dor, 1126 FDO_FDMAEN | FDO_MOEN(0)); 1127 } 1128 1129 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1130 delay(10); 1131 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1132 1133 if ((fdc->sc_flags & FDC_82077) != 0) { 1134 bus_space_write_1(t, h, fdc->sc_reg_dor, 1135 FDO_FRST | FDO_FDMAEN | FDO_DS); 1136 } 1137 #ifdef FD_DEBUG 1138 if (fdc_debug) 1139 printf("fdc reset\n"); 1140 #endif 1141 } 1142 1143 void 1144 fd_set_motor(struct fdc_softc *fdc) 1145 { 1146 struct fd_softc *fd; 1147 u_char status; 1148 int n; 1149 1150 if ((fdc->sc_flags & FDC_82077) != 0) { 1151 status = FDO_FRST | FDO_FDMAEN; 1152 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1153 status |= fd->sc_drive; 1154 1155 for (n = 0; n < 4; n++) 1156 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1157 status |= FDO_MOEN(n); 1158 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1159 fdc->sc_reg_dor, status); 1160 #ifdef SUN4 1161 } else { 1162 1163 for (n = 0; n < 4; n++) { 1164 if ((fd = fdc->sc_fd[n]) != NULL && 1165 (fd->sc_flags & FD_MOTOR) != 0) { 1166 auxregbisc(AUXIO4C_FDS, 0); 1167 return; 1168 } 1169 } 1170 auxregbisc(0, AUXIO4C_FDS); 1171 #endif 1172 } 1173 } 1174 1175 void 1176 fd_motor_off(void *arg) 1177 { 1178 struct fd_softc *fd = arg; 1179 int s; 1180 1181 s = splbio(); 1182 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1183 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1184 splx(s); 1185 } 1186 1187 void 1188 fd_motor_on(void *arg) 1189 { 1190 struct fd_softc *fd = arg; 1191 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1192 int s; 1193 1194 s = splbio(); 1195 fd->sc_flags &= ~FD_MOTOR_WAIT; 1196 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1197 (void)fdcstate(fdc); 1198 splx(s); 1199 } 1200 1201 /* 1202 * Get status bytes off the FDC after a command has finished 1203 * Returns the number of status bytes read; -1 on error. 1204 * The return value is also stored in `sc_nstat'. 1205 */ 1206 int 1207 fdcresult(struct fdc_softc *fdc) 1208 { 1209 bus_space_tag_t t = fdc->sc_bustag; 1210 bus_space_handle_t h = fdc->sc_handle; 1211 int j, n = 0; 1212 1213 for (j = 10000; j; j--) { 1214 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1215 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1216 if (v == NE7_RQM) 1217 return fdc->sc_nstat = n; 1218 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1219 if (n >= sizeof(fdc->sc_status)) { 1220 log(LOG_ERR, "fdcresult: overrun\n"); 1221 return -1; 1222 } 1223 fdc->sc_status[n++] = 1224 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1225 } else 1226 delay(1); 1227 } 1228 1229 log(LOG_ERR, "fdcresult: timeout\n"); 1230 return fdc->sc_nstat = -1; 1231 } 1232 1233 /* 1234 * Write a command byte to the FDC. 1235 * Returns 0 on success; -1 on failure (i.e. timeout) 1236 */ 1237 int 1238 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1239 { 1240 bus_space_tag_t t = fdc->sc_bustag; 1241 bus_space_handle_t h = fdc->sc_handle; 1242 int i; 1243 1244 for (i = 100000; i-- > 0;) { 1245 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1246 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1247 /* The chip is ready */ 1248 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1249 return 0; 1250 } 1251 delay(1); 1252 } 1253 return -1; 1254 } 1255 1256 int 1257 fdc_diskchange(struct fdc_softc *fdc) 1258 { 1259 1260 #ifdef SUN4 1261 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1262 #endif 1263 bus_space_tag_t t = fdc->sc_bustag; 1264 bus_space_handle_t h = fdc->sc_handle; 1265 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1266 return (v & FDI_DCHG) != 0; 1267 #ifdef SUN4 1268 } else if (CPU_ISSUN4C) { 1269 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1270 } 1271 return 0; 1272 #endif 1273 } 1274 1275 int 1276 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1277 { 1278 int unit, pmask; 1279 struct fd_softc *fd; 1280 struct fd_type *type; 1281 1282 unit = FDUNIT(dev); 1283 if (unit >= fd_cd.cd_ndevs) 1284 return ENXIO; 1285 fd = fd_cd.cd_devs[unit]; 1286 if (fd == NULL) 1287 return ENXIO; 1288 type = fd_dev_to_type(fd, dev); 1289 if (type == NULL) 1290 return ENXIO; 1291 1292 if ((fd->sc_flags & FD_OPEN) != 0 && 1293 fd->sc_type != type) 1294 return EBUSY; 1295 1296 fd->sc_type = type; 1297 fd->sc_cylin = -1; 1298 fd->sc_flags |= FD_OPEN; 1299 1300 /* 1301 * Only update the disklabel if we're not open anywhere else. 1302 */ 1303 if (fd->sc_dk.dk_openmask == 0) 1304 fdgetdisklabel(dev); 1305 1306 pmask = (1 << DISKPART(dev)); 1307 1308 switch (fmt) { 1309 case S_IFCHR: 1310 fd->sc_dk.dk_copenmask |= pmask; 1311 break; 1312 1313 case S_IFBLK: 1314 fd->sc_dk.dk_bopenmask |= pmask; 1315 break; 1316 } 1317 fd->sc_dk.dk_openmask = 1318 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1319 1320 return 0; 1321 } 1322 1323 int 1324 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1325 { 1326 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1327 int pmask = (1 << DISKPART(dev)); 1328 1329 fd->sc_flags &= ~FD_OPEN; 1330 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1331 1332 switch (fmt) { 1333 case S_IFCHR: 1334 fd->sc_dk.dk_copenmask &= ~pmask; 1335 break; 1336 1337 case S_IFBLK: 1338 fd->sc_dk.dk_bopenmask &= ~pmask; 1339 break; 1340 } 1341 fd->sc_dk.dk_openmask = 1342 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1343 1344 return 0; 1345 } 1346 1347 int 1348 fdread(dev_t dev, struct uio *uio, int flag) 1349 { 1350 1351 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1352 } 1353 1354 int 1355 fdwrite(dev_t dev, struct uio *uio, int flag) 1356 { 1357 1358 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1359 } 1360 1361 void 1362 fdcstart(struct fdc_softc *fdc) 1363 { 1364 1365 #ifdef DIAGNOSTIC 1366 /* only got here if controller's drive queue was inactive; should 1367 be in idle state */ 1368 if (fdc->sc_state != DEVIDLE) { 1369 printf("fdcstart: not idle\n"); 1370 return; 1371 } 1372 #endif 1373 (void)fdcstate(fdc); 1374 } 1375 1376 void 1377 fdcstatus(struct fdc_softc *fdc, const char *s) 1378 { 1379 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1380 int n; 1381 char bits[64]; 1382 1383 /* Just print last status */ 1384 n = fdc->sc_nstat; 1385 1386 #if 0 1387 /* 1388 * A 82072 seems to return <invalid command> on 1389 * gratuitous Sense Interrupt commands. 1390 */ 1391 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1392 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1393 (void)fdcresult(fdc); 1394 n = 2; 1395 } 1396 #endif 1397 1398 printf("%s: %s: state %d", 1399 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1400 1401 switch (n) { 1402 case 0: 1403 printf("\n"); 1404 break; 1405 case 2: 1406 printf(" (st0 %s cyl %d)\n", 1407 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1408 bits, sizeof(bits)), fdc->sc_status[1]); 1409 break; 1410 case 7: 1411 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1412 NE7_ST0BITS, bits, sizeof(bits))); 1413 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1414 NE7_ST1BITS, bits, sizeof(bits))); 1415 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1416 NE7_ST2BITS, bits, sizeof(bits))); 1417 printf(" cyl %d head %d sec %d)\n", 1418 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1419 break; 1420 #ifdef DIAGNOSTIC 1421 default: 1422 printf(" fdcstatus: weird size: %d\n", n); 1423 break; 1424 #endif 1425 } 1426 } 1427 1428 void 1429 fdctimeout(void *arg) 1430 { 1431 struct fdc_softc *fdc = arg; 1432 struct fd_softc *fd; 1433 int s; 1434 1435 s = splbio(); 1436 fd = fdc->sc_drives.tqh_first; 1437 if (fd == NULL) { 1438 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1439 fdc->sc_dev.dv_xname, 1440 fdc->sc_state, fdc->sc_istatus); 1441 fdc->sc_state = DEVIDLE; 1442 goto out; 1443 } 1444 1445 if (BUFQ_PEEK(fd->sc_q) != NULL) 1446 fdc->sc_state++; 1447 else 1448 fdc->sc_state = DEVIDLE; 1449 1450 (void)fdcstate(fdc); 1451 out: 1452 splx(s); 1453 1454 } 1455 1456 void 1457 fdcpseudointr(void *arg) 1458 { 1459 struct fdc_softc *fdc = arg; 1460 int s; 1461 1462 /* Just ensure it has the right spl. */ 1463 s = splbio(); 1464 (void)fdcstate(fdc); 1465 splx(s); 1466 } 1467 1468 1469 /* 1470 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1471 * handler is available. Unfortunately, we have no reliable way to 1472 * determine that the interrupt really came from the floppy controller; 1473 * just hope that the other devices that share this interrupt level 1474 * can do better.. 1475 */ 1476 int 1477 fdc_c_hwintr(void *arg) 1478 { 1479 struct fdc_softc *fdc = arg; 1480 bus_space_tag_t t = fdc->sc_bustag; 1481 bus_space_handle_t h = fdc->sc_handle; 1482 1483 switch (fdc->sc_itask) { 1484 case FDC_ITASK_NONE: 1485 return 0; 1486 case FDC_ITASK_SENSEI: 1487 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1488 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1489 else 1490 fdc->sc_istatus = FDC_ISTATUS_DONE; 1491 softintr_schedule(fdc->sc_sicookie); 1492 return 1; 1493 case FDC_ITASK_RESULT: 1494 if (fdcresult(fdc) == -1) 1495 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1496 else 1497 fdc->sc_istatus = FDC_ISTATUS_DONE; 1498 softintr_schedule(fdc->sc_sicookie); 1499 return 1; 1500 case FDC_ITASK_DMA: 1501 /* Proceed with pseudo-DMA below */ 1502 break; 1503 default: 1504 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1505 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1506 softintr_schedule(fdc->sc_sicookie); 1507 return 1; 1508 } 1509 1510 /* 1511 * Pseudo DMA in progress 1512 */ 1513 for (;;) { 1514 uint8_t msr; 1515 1516 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1517 1518 if ((msr & NE7_RQM) == 0) 1519 /* That's all this round. */ 1520 break; 1521 1522 if ((msr & NE7_NDM) == 0) { 1523 /* Execution phase finished, get result. */ 1524 fdcresult(fdc); 1525 fdc->sc_istatus = FDC_ISTATUS_DONE; 1526 softintr_schedule(fdc->sc_sicookie); 1527 break; 1528 } 1529 1530 if (fdc->sc_tc == 0) 1531 /* For some reason the controller wants to transfer 1532 more data then what we want to transfer. */ 1533 panic("fdc: overrun"); 1534 1535 /* Another byte can be transferred */ 1536 if ((msr & NE7_DIO) != 0) 1537 *fdc->sc_data = 1538 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1539 else 1540 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1541 *fdc->sc_data); 1542 1543 fdc->sc_data++; 1544 if (--fdc->sc_tc == 0) { 1545 FTC_FLIP; 1546 break; 1547 } 1548 } 1549 return 1; 1550 } 1551 1552 void 1553 fdcswintr(void *arg) 1554 { 1555 struct fdc_softc *fdc = arg; 1556 1557 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1558 /* This (software) interrupt is not for us */ 1559 return; 1560 1561 switch (fdc->sc_istatus) { 1562 case FDC_ISTATUS_ERROR: 1563 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1564 break; 1565 case FDC_ISTATUS_SPURIOUS: 1566 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1567 break; 1568 } 1569 1570 fdcstate(fdc); 1571 return; 1572 } 1573 1574 int 1575 fdcstate(struct fdc_softc *fdc) 1576 { 1577 1578 #define st0 fdc->sc_status[0] 1579 #define st1 fdc->sc_status[1] 1580 #define cyl fdc->sc_status[1] 1581 #define FDC_WRFIFO(fdc, c) do { \ 1582 if (fdc_wrfifo(fdc, (c))) { \ 1583 goto xxx; \ 1584 } \ 1585 } while(0) 1586 1587 struct fd_softc *fd; 1588 struct buf *bp; 1589 int read, head, sec, nblks; 1590 struct fd_type *type; 1591 struct ne7_fd_formb *finfo = NULL; 1592 1593 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1594 /* Prevent loop if the reset sequence produces errors */ 1595 if (fdc->sc_state != RESETCOMPLETE && 1596 fdc->sc_state != RECALWAIT && 1597 fdc->sc_state != RECALCOMPLETE) 1598 fdc->sc_state = DORESET; 1599 } 1600 1601 /* Clear I task/status field */ 1602 fdc->sc_istatus = FDC_ISTATUS_NONE; 1603 fdc->sc_itask = FDC_ITASK_NONE; 1604 1605 loop: 1606 /* Is there a drive for the controller to do a transfer with? */ 1607 fd = fdc->sc_drives.tqh_first; 1608 if (fd == NULL) { 1609 fdc->sc_state = DEVIDLE; 1610 return 0; 1611 } 1612 1613 /* Is there a transfer to this drive? If not, deactivate drive. */ 1614 bp = BUFQ_PEEK(fd->sc_q); 1615 if (bp == NULL) { 1616 fd->sc_ops = 0; 1617 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1618 fd->sc_active = 0; 1619 goto loop; 1620 } 1621 1622 if (bp->b_flags & B_FORMAT) 1623 finfo = (struct ne7_fd_formb *)bp->b_data; 1624 1625 switch (fdc->sc_state) { 1626 case DEVIDLE: 1627 fdc->sc_errors = 0; 1628 fd->sc_skip = 0; 1629 fd->sc_bcount = bp->b_bcount; 1630 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1631 callout_stop(&fd->sc_motoroff_ch); 1632 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1633 fdc->sc_state = MOTORWAIT; 1634 return 1; 1635 } 1636 if ((fd->sc_flags & FD_MOTOR) == 0) { 1637 /* Turn on the motor, being careful about pairing. */ 1638 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1639 if (ofd && ofd->sc_flags & FD_MOTOR) { 1640 callout_stop(&ofd->sc_motoroff_ch); 1641 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1642 } 1643 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1644 fd_set_motor(fdc); 1645 fdc->sc_state = MOTORWAIT; 1646 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1647 /* Allow .25s for motor to stabilize. */ 1648 callout_reset(&fd->sc_motoron_ch, hz / 4, 1649 fd_motor_on, fd); 1650 } else { 1651 fd->sc_flags &= ~FD_MOTOR_WAIT; 1652 goto loop; 1653 } 1654 return 1; 1655 } 1656 /* Make sure the right drive is selected. */ 1657 fd_set_motor(fdc); 1658 1659 if (fdc_diskchange(fdc)) 1660 goto dodskchg; 1661 1662 /*FALLTHROUGH*/ 1663 case DOSEEK: 1664 doseek: 1665 if ((fdc->sc_flags & FDC_EIS) && 1666 (bp->b_flags & B_FORMAT) == 0) { 1667 fd->sc_cylin = bp->b_cylinder; 1668 /* We use implied seek */ 1669 goto doio; 1670 } 1671 1672 if (fd->sc_cylin == bp->b_cylinder) 1673 goto doio; 1674 1675 fd->sc_cylin = -1; 1676 fdc->sc_state = SEEKWAIT; 1677 fdc->sc_nstat = 0; 1678 1679 iostat_seek(fd->sc_dk.dk_stats); 1680 1681 disk_busy(&fd->sc_dk); 1682 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1683 1684 /* specify command */ 1685 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1686 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1687 /* XXX head load time == 6ms */ 1688 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1689 1690 fdc->sc_itask = FDC_ITASK_SENSEI; 1691 /* seek function */ 1692 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1693 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1694 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1695 return 1; 1696 1697 case DODSKCHG: 1698 dodskchg: 1699 /* 1700 * Disk change: force a seek operation by going to cyl 1 1701 * followed by a recalibrate. 1702 */ 1703 disk_busy(&fd->sc_dk); 1704 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1705 fd->sc_cylin = -1; 1706 fdc->sc_nstat = 0; 1707 fdc->sc_state = DSKCHGWAIT; 1708 1709 fdc->sc_itask = FDC_ITASK_SENSEI; 1710 /* seek function */ 1711 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1712 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1713 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1714 return 1; 1715 1716 case DSKCHGWAIT: 1717 callout_stop(&fdc->sc_timo_ch); 1718 disk_unbusy(&fd->sc_dk, 0, 0); 1719 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1720 cyl != 1 * fd->sc_type->step) { 1721 fdcstatus(fdc, "dskchg seek failed"); 1722 fdc->sc_state = DORESET; 1723 } else 1724 fdc->sc_state = DORECAL; 1725 1726 if (fdc_diskchange(fdc)) { 1727 printf("%s: cannot clear disk change status\n", 1728 fdc->sc_dev.dv_xname); 1729 fdc->sc_state = DORESET; 1730 } 1731 goto loop; 1732 1733 case DOIO: 1734 doio: 1735 if (finfo != NULL) 1736 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1737 (char *)finfo; 1738 type = fd->sc_type; 1739 sec = fd->sc_blkno % type->seccyl; 1740 nblks = type->seccyl - sec; 1741 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1742 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1743 fd->sc_nblks = nblks; 1744 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1745 head = sec / type->sectrac; 1746 sec -= head * type->sectrac; 1747 #ifdef DIAGNOSTIC 1748 {int block; 1749 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1750 sec; 1751 if (block != fd->sc_blkno) { 1752 printf("fdcintr: block %d != blkno %d\n", block, 1753 (int)fd->sc_blkno); 1754 #ifdef DDB 1755 Debugger(); 1756 #endif 1757 }} 1758 #endif 1759 read = bp->b_flags & B_READ; 1760 1761 /* Setup for pseudo DMA */ 1762 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1763 fdc->sc_tc = fd->sc_nbytes; 1764 1765 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1766 fdc->sc_reg_drs, type->rate); 1767 #ifdef FD_DEBUG 1768 if (fdc_debug > 1) 1769 printf("fdcstate: doio: %s drive %d " 1770 "track %d head %d sec %d nblks %d\n", 1771 finfo ? "format" : 1772 (read ? "read" : "write"), 1773 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1774 #endif 1775 fdc->sc_state = IOCOMPLETE; 1776 fdc->sc_itask = FDC_ITASK_DMA; 1777 fdc->sc_nstat = 0; 1778 1779 disk_busy(&fd->sc_dk); 1780 1781 /* allow 3 seconds for operation */ 1782 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1783 1784 if (finfo != NULL) { 1785 /* formatting */ 1786 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1787 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1788 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1789 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1790 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1791 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1792 } else { 1793 if (read) 1794 FDC_WRFIFO(fdc, NE7CMD_READ); 1795 else 1796 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1797 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1798 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1799 FDC_WRFIFO(fdc, head); 1800 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1801 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1802 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1803 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1804 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1805 } 1806 1807 return 1; /* will return later */ 1808 1809 case SEEKWAIT: 1810 callout_stop(&fdc->sc_timo_ch); 1811 fdc->sc_state = SEEKCOMPLETE; 1812 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1813 /* allow 1/50 second for heads to settle */ 1814 callout_reset(&fdc->sc_intr_ch, hz / 50, 1815 fdcpseudointr, fdc); 1816 return 1; /* will return later */ 1817 } 1818 /*FALLTHROUGH*/ 1819 case SEEKCOMPLETE: 1820 /* no data on seek */ 1821 disk_unbusy(&fd->sc_dk, 0, 0); 1822 1823 /* Make sure seek really happened. */ 1824 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1825 cyl != bp->b_cylinder * fd->sc_type->step) { 1826 #ifdef FD_DEBUG 1827 if (fdc_debug) 1828 fdcstatus(fdc, "seek failed"); 1829 #endif 1830 fdcretry(fdc); 1831 goto loop; 1832 } 1833 fd->sc_cylin = bp->b_cylinder; 1834 goto doio; 1835 1836 case IOTIMEDOUT: 1837 /* 1838 * Try to abort the I/O operation without resetting 1839 * the chip first. Poke TC and arrange to pick up 1840 * the timed out I/O command's status. 1841 */ 1842 fdc->sc_itask = FDC_ITASK_RESULT; 1843 fdc->sc_state = IOCLEANUPWAIT; 1844 fdc->sc_nstat = 0; 1845 /* 1/10 second should be enough */ 1846 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1847 FTC_FLIP; 1848 return 1; 1849 1850 case IOCLEANUPTIMEDOUT: 1851 case SEEKTIMEDOUT: 1852 case RECALTIMEDOUT: 1853 case RESETTIMEDOUT: 1854 case DSKCHGTIMEDOUT: 1855 fdcstatus(fdc, "timeout"); 1856 1857 /* All other timeouts always roll through to a chip reset */ 1858 fdcretry(fdc); 1859 1860 /* Force reset, no matter what fdcretry() says */ 1861 fdc->sc_state = DORESET; 1862 goto loop; 1863 1864 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1865 callout_stop(&fdc->sc_timo_ch); 1866 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1867 (bp->b_flags & B_READ)); 1868 fdcretry(fdc); 1869 goto loop; 1870 1871 case IOCOMPLETE: /* IO DONE, post-analyze */ 1872 callout_stop(&fdc->sc_timo_ch); 1873 1874 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1875 (bp->b_flags & B_READ)); 1876 1877 if (fdc->sc_nstat != 7 || st1 != 0 || 1878 ((st0 & 0xf8) != 0 && 1879 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1880 #ifdef FD_DEBUG 1881 if (fdc_debug) { 1882 fdcstatus(fdc, bp->b_flags & B_READ ? 1883 "read failed" : "write failed"); 1884 printf("blkno %lld nblks %d nstat %d tc %d\n", 1885 (long long)fd->sc_blkno, fd->sc_nblks, 1886 fdc->sc_nstat, fdc->sc_tc); 1887 } 1888 #endif 1889 if (fdc->sc_nstat == 7 && 1890 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1891 1892 /* 1893 * Silently retry overruns if no other 1894 * error bit is set. Adjust threshold. 1895 */ 1896 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1897 if (thr < 15) { 1898 thr++; 1899 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1900 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1901 #ifdef FD_DEBUG 1902 if (fdc_debug) 1903 printf("fdc: %d -> threshold\n", 1904 thr); 1905 #endif 1906 fdconf(fdc); 1907 fdc->sc_overruns = 0; 1908 } 1909 if (++fdc->sc_overruns < 3) { 1910 fdc->sc_state = DOIO; 1911 goto loop; 1912 } 1913 } 1914 fdcretry(fdc); 1915 goto loop; 1916 } 1917 if (fdc->sc_errors) { 1918 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1919 fd->sc_skip / FD_BSIZE(fd), 1920 (struct disklabel *)NULL); 1921 printf("\n"); 1922 fdc->sc_errors = 0; 1923 } else { 1924 if (--fdc->sc_overruns < -20) { 1925 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1926 if (thr > 0) { 1927 thr--; 1928 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1929 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1930 #ifdef FD_DEBUG 1931 if (fdc_debug) 1932 printf("fdc: %d -> threshold\n", 1933 thr); 1934 #endif 1935 fdconf(fdc); 1936 } 1937 fdc->sc_overruns = 0; 1938 } 1939 } 1940 fd->sc_blkno += fd->sc_nblks; 1941 fd->sc_skip += fd->sc_nbytes; 1942 fd->sc_bcount -= fd->sc_nbytes; 1943 if (finfo == NULL && fd->sc_bcount > 0) { 1944 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1945 goto doseek; 1946 } 1947 fdfinish(fd, bp); 1948 goto loop; 1949 1950 case DORESET: 1951 /* try a reset, keep motor on */ 1952 fd_set_motor(fdc); 1953 delay(100); 1954 fdc->sc_nstat = 0; 1955 fdc->sc_itask = FDC_ITASK_SENSEI; 1956 fdc->sc_state = RESETCOMPLETE; 1957 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1958 fdc_reset(fdc); 1959 return 1; /* will return later */ 1960 1961 case RESETCOMPLETE: 1962 callout_stop(&fdc->sc_timo_ch); 1963 fdconf(fdc); 1964 1965 /* FALLTHROUGH */ 1966 case DORECAL: 1967 fdc->sc_state = RECALWAIT; 1968 fdc->sc_itask = FDC_ITASK_SENSEI; 1969 fdc->sc_nstat = 0; 1970 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1971 /* recalibrate function */ 1972 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1973 FDC_WRFIFO(fdc, fd->sc_drive); 1974 return 1; /* will return later */ 1975 1976 case RECALWAIT: 1977 callout_stop(&fdc->sc_timo_ch); 1978 fdc->sc_state = RECALCOMPLETE; 1979 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1980 /* allow 1/30 second for heads to settle */ 1981 callout_reset(&fdc->sc_intr_ch, hz / 30, 1982 fdcpseudointr, fdc); 1983 return 1; /* will return later */ 1984 } 1985 1986 case RECALCOMPLETE: 1987 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1988 #ifdef FD_DEBUG 1989 if (fdc_debug) 1990 fdcstatus(fdc, "recalibrate failed"); 1991 #endif 1992 fdcretry(fdc); 1993 goto loop; 1994 } 1995 fd->sc_cylin = 0; 1996 goto doseek; 1997 1998 case MOTORWAIT: 1999 if (fd->sc_flags & FD_MOTOR_WAIT) 2000 return 1; /* time's not up yet */ 2001 goto doseek; 2002 2003 default: 2004 fdcstatus(fdc, "stray interrupt"); 2005 return 1; 2006 } 2007 #ifdef DIAGNOSTIC 2008 panic("fdcintr: impossible"); 2009 #endif 2010 2011 xxx: 2012 /* 2013 * We get here if the chip locks up in FDC_WRFIFO() 2014 * Cancel any operation and schedule a reset 2015 */ 2016 callout_stop(&fdc->sc_timo_ch); 2017 fdcretry(fdc); 2018 fdc->sc_state = DORESET; 2019 goto loop; 2020 2021 #undef st0 2022 #undef st1 2023 #undef cyl 2024 } 2025 2026 void 2027 fdcretry(struct fdc_softc *fdc) 2028 { 2029 struct fd_softc *fd; 2030 struct buf *bp; 2031 int error = EIO; 2032 2033 fd = fdc->sc_drives.tqh_first; 2034 bp = BUFQ_PEEK(fd->sc_q); 2035 2036 fdc->sc_overruns = 0; 2037 if (fd->sc_opts & FDOPT_NORETRY) 2038 goto fail; 2039 2040 switch (fdc->sc_errors) { 2041 case 0: 2042 if (fdc->sc_nstat == 7 && 2043 (fdc->sc_status[0] & 0xd8) == 0x40 && 2044 (fdc->sc_status[1] & 0x2) == 0x2) { 2045 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 2046 error = EROFS; 2047 goto failsilent; 2048 } 2049 /* try again */ 2050 fdc->sc_state = 2051 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2052 break; 2053 2054 case 1: case 2: case 3: 2055 /* didn't work; try recalibrating */ 2056 fdc->sc_state = DORECAL; 2057 break; 2058 2059 case 4: 2060 if (fdc->sc_nstat == 7 && 2061 fdc->sc_status[0] == 0 && 2062 fdc->sc_status[1] == 0 && 2063 fdc->sc_status[2] == 0) { 2064 /* 2065 * We've retried a few times and we've got 2066 * valid status and all three status bytes 2067 * are zero. Assume this condition is the 2068 * result of no disk loaded into the drive. 2069 */ 2070 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 2071 error = ENODEV; 2072 goto failsilent; 2073 } 2074 2075 /* still no go; reset the bastard */ 2076 fdc->sc_state = DORESET; 2077 break; 2078 2079 default: 2080 fail: 2081 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2082 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2083 fd->sc_skip / FD_BSIZE(fd), 2084 (struct disklabel *)NULL); 2085 printf("\n"); 2086 fdcstatus(fdc, "controller status"); 2087 } 2088 2089 failsilent: 2090 bp->b_flags |= B_ERROR; 2091 bp->b_error = error; 2092 fdfinish(fd, bp); 2093 } 2094 fdc->sc_errors++; 2095 } 2096 2097 int 2098 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2099 { 2100 struct fd_softc *fd; 2101 struct fdc_softc *fdc; 2102 struct fdformat_parms *form_parms; 2103 struct fdformat_cmd *form_cmd; 2104 struct ne7_fd_formb *fd_formb; 2105 int il[FD_MAX_NSEC + 1]; 2106 int unit; 2107 int i, j; 2108 int error; 2109 2110 unit = FDUNIT(dev); 2111 if (unit >= fd_cd.cd_ndevs) 2112 return ENXIO; 2113 2114 fd = fd_cd.cd_devs[FDUNIT(dev)]; 2115 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 2116 2117 switch (cmd) { 2118 case DIOCGDINFO: 2119 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2120 return 0; 2121 2122 case DIOCWLABEL: 2123 if ((flag & FWRITE) == 0) 2124 return EBADF; 2125 /* XXX do something */ 2126 return 0; 2127 2128 case DIOCWDINFO: 2129 if ((flag & FWRITE) == 0) 2130 return EBADF; 2131 2132 error = setdisklabel(fd->sc_dk.dk_label, 2133 (struct disklabel *)addr, 0, 2134 fd->sc_dk.dk_cpulabel); 2135 if (error) 2136 return error; 2137 2138 error = writedisklabel(dev, fdstrategy, 2139 fd->sc_dk.dk_label, 2140 fd->sc_dk.dk_cpulabel); 2141 return error; 2142 2143 case DIOCLOCK: 2144 /* 2145 * Nothing to do here, really. 2146 */ 2147 return 0; 2148 2149 case DIOCEJECT: 2150 if (*(int *)addr == 0) { 2151 int part = DISKPART(dev); 2152 /* 2153 * Don't force eject: check that we are the only 2154 * partition open. If so, unlock it. 2155 */ 2156 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2157 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2158 fd->sc_dk.dk_openmask) { 2159 return EBUSY; 2160 } 2161 } 2162 /* FALLTHROUGH */ 2163 case ODIOCEJECT: 2164 if (fdc->sc_flags & FDC_NOEJECT) 2165 return EINVAL; 2166 fd_do_eject(fd); 2167 return 0; 2168 2169 case FDIOCGETFORMAT: 2170 form_parms = (struct fdformat_parms *)addr; 2171 form_parms->fdformat_version = FDFORMAT_VERSION; 2172 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2173 form_parms->ncyl = fd->sc_type->cylinders; 2174 form_parms->nspt = fd->sc_type->sectrac; 2175 form_parms->ntrk = fd->sc_type->heads; 2176 form_parms->stepspercyl = fd->sc_type->step; 2177 form_parms->gaplen = fd->sc_type->gap2; 2178 form_parms->fillbyte = fd->sc_type->fillbyte; 2179 form_parms->interleave = fd->sc_type->interleave; 2180 switch (fd->sc_type->rate) { 2181 case FDC_500KBPS: 2182 form_parms->xfer_rate = 500 * 1024; 2183 break; 2184 case FDC_300KBPS: 2185 form_parms->xfer_rate = 300 * 1024; 2186 break; 2187 case FDC_250KBPS: 2188 form_parms->xfer_rate = 250 * 1024; 2189 break; 2190 default: 2191 return EINVAL; 2192 } 2193 return 0; 2194 2195 case FDIOCSETFORMAT: 2196 if ((flag & FWRITE) == 0) 2197 return EBADF; /* must be opened for writing */ 2198 2199 form_parms = (struct fdformat_parms *)addr; 2200 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2201 return EINVAL;/* wrong version of formatting prog */ 2202 2203 i = form_parms->nbps >> 7; 2204 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2205 i & ~(1 << (ffs(i)-1))) 2206 /* not a power-of-two multiple of 128 */ 2207 return EINVAL; 2208 2209 switch (form_parms->xfer_rate) { 2210 case 500 * 1024: 2211 fd->sc_type->rate = FDC_500KBPS; 2212 break; 2213 case 300 * 1024: 2214 fd->sc_type->rate = FDC_300KBPS; 2215 break; 2216 case 250 * 1024: 2217 fd->sc_type->rate = FDC_250KBPS; 2218 break; 2219 default: 2220 return EINVAL; 2221 } 2222 2223 if (form_parms->nspt > FD_MAX_NSEC || 2224 form_parms->fillbyte > 0xff || 2225 form_parms->interleave > 0xff) 2226 return EINVAL; 2227 fd->sc_type->sectrac = form_parms->nspt; 2228 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2229 return EINVAL; 2230 fd->sc_type->heads = form_parms->ntrk; 2231 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2232 fd->sc_type->secsize = ffs(i)-1; 2233 fd->sc_type->gap2 = form_parms->gaplen; 2234 fd->sc_type->cylinders = form_parms->ncyl; 2235 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2236 form_parms->nbps / DEV_BSIZE; 2237 fd->sc_type->step = form_parms->stepspercyl; 2238 fd->sc_type->fillbyte = form_parms->fillbyte; 2239 fd->sc_type->interleave = form_parms->interleave; 2240 return 0; 2241 2242 case FDIOCFORMAT_TRACK: 2243 if((flag & FWRITE) == 0) 2244 /* must be opened for writing */ 2245 return EBADF; 2246 form_cmd = (struct fdformat_cmd *)addr; 2247 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2248 /* wrong version of formatting prog */ 2249 return EINVAL; 2250 2251 if (form_cmd->head >= fd->sc_type->heads || 2252 form_cmd->cylinder >= fd->sc_type->cylinders) { 2253 return EINVAL; 2254 } 2255 2256 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2257 M_TEMP, M_NOWAIT); 2258 if (fd_formb == 0) 2259 return ENOMEM; 2260 2261 fd_formb->head = form_cmd->head; 2262 fd_formb->cyl = form_cmd->cylinder; 2263 fd_formb->transfer_rate = fd->sc_type->rate; 2264 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2265 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2266 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2267 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2268 2269 bzero(il, sizeof il); 2270 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2271 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2272 j++; 2273 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2274 j += fd->sc_type->interleave; 2275 } 2276 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2277 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2278 fd_formb->fd_formb_headno(i) = form_cmd->head; 2279 fd_formb->fd_formb_secno(i) = il[i + 1]; 2280 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2281 } 2282 2283 error = fdformat(dev, fd_formb, l->l_proc); 2284 free(fd_formb, M_TEMP); 2285 return error; 2286 2287 case FDIOCGETOPTS: /* get drive options */ 2288 *(int *)addr = fd->sc_opts; 2289 return 0; 2290 2291 case FDIOCSETOPTS: /* set drive options */ 2292 fd->sc_opts = *(int *)addr; 2293 return 0; 2294 2295 #ifdef FD_DEBUG 2296 case _IO('f', 100): 2297 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2298 fdcresult(fdc); 2299 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2300 for (i = 0; i < fdc->sc_nstat; i++) 2301 printf(" 0x%x", fdc->sc_status[i]); 2302 printf(">\n"); 2303 return 0; 2304 2305 case _IOW('f', 101, int): 2306 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2307 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2308 fdconf(fdc); 2309 return 0; 2310 2311 case _IO('f', 102): 2312 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2313 fdcresult(fdc); 2314 printf("fdc: sensei(%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 #endif 2320 default: 2321 return ENOTTY; 2322 } 2323 2324 #ifdef DIAGNOSTIC 2325 panic("fdioctl: impossible"); 2326 #endif 2327 } 2328 2329 int 2330 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2331 { 2332 int rv = 0; 2333 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2334 struct fd_type *type = fd->sc_type; 2335 struct buf *bp; 2336 2337 /* set up a buffer header for fdstrategy() */ 2338 bp = getiobuf_nowait(); 2339 if (bp == NULL) 2340 return ENOBUFS; 2341 2342 bp->b_vp = NULL; 2343 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2344 bp->b_proc = p; 2345 bp->b_dev = dev; 2346 2347 /* 2348 * Calculate a fake blkno, so fdstrategy() would initiate a 2349 * seek to the requested cylinder. 2350 */ 2351 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2352 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2353 / DEV_BSIZE; 2354 2355 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2356 bp->b_data = (void *)finfo; 2357 2358 #ifdef FD_DEBUG 2359 if (fdc_debug) { 2360 int i; 2361 2362 printf("fdformat: blkno 0x%llx count %d\n", 2363 (unsigned long long)bp->b_blkno, bp->b_bcount); 2364 2365 printf("\tcyl:\t%d\n", finfo->cyl); 2366 printf("\thead:\t%d\n", finfo->head); 2367 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2368 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2369 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2370 printf("\ttrack data:"); 2371 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2372 printf(" [c%d h%d s%d]", 2373 finfo->fd_formb_cylno(i), 2374 finfo->fd_formb_headno(i), 2375 finfo->fd_formb_secno(i) ); 2376 if (finfo->fd_formb_secsize(i) != 2) 2377 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2378 } 2379 printf("\n"); 2380 } 2381 #endif 2382 2383 /* now do the format */ 2384 fdstrategy(bp); 2385 2386 /* ...and wait for it to complete */ 2387 rv = biowait(bp); 2388 putiobuf(bp); 2389 return rv; 2390 } 2391 2392 void 2393 fdgetdisklabel(dev_t dev) 2394 { 2395 int unit = FDUNIT(dev), i; 2396 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2397 struct disklabel *lp = fd->sc_dk.dk_label; 2398 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2399 2400 bzero(lp, sizeof(struct disklabel)); 2401 bzero(lp, sizeof(struct cpu_disklabel)); 2402 2403 lp->d_type = DTYPE_FLOPPY; 2404 lp->d_secsize = FD_BSIZE(fd); 2405 lp->d_secpercyl = fd->sc_type->seccyl; 2406 lp->d_nsectors = fd->sc_type->sectrac; 2407 lp->d_ncylinders = fd->sc_type->cylinders; 2408 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2409 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2410 lp->d_rpm = 300; /* XXX like it matters... */ 2411 2412 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2413 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2414 lp->d_interleave = 1; 2415 lp->d_flags = D_REMOVABLE; 2416 2417 lp->d_partitions[RAW_PART].p_offset = 0; 2418 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2419 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2420 lp->d_npartitions = RAW_PART + 1; 2421 2422 lp->d_magic = DISKMAGIC; 2423 lp->d_magic2 = DISKMAGIC; 2424 lp->d_checksum = dkcksum(lp); 2425 2426 /* 2427 * Call the generic disklabel extraction routine. If there's 2428 * not a label there, fake it. 2429 */ 2430 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2431 strncpy(lp->d_packname, "default label", 2432 sizeof(lp->d_packname)); 2433 /* 2434 * Reset the partition info; it might have gotten 2435 * trashed in readdisklabel(). 2436 * 2437 * XXX Why do we have to do this? readdisklabel() 2438 * should be safe... 2439 */ 2440 for (i = 0; i < MAXPARTITIONS; ++i) { 2441 lp->d_partitions[i].p_offset = 0; 2442 if (i == RAW_PART) { 2443 lp->d_partitions[i].p_size = 2444 lp->d_secpercyl * lp->d_ncylinders; 2445 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2446 } else { 2447 lp->d_partitions[i].p_size = 0; 2448 lp->d_partitions[i].p_fstype = FS_UNUSED; 2449 } 2450 } 2451 lp->d_npartitions = RAW_PART + 1; 2452 } 2453 } 2454 2455 void 2456 fd_do_eject(struct fd_softc *fd) 2457 { 2458 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2459 2460 #ifdef SUN4 2461 if (CPU_ISSUN4C) { 2462 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2463 delay(10); 2464 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2465 return; 2466 } 2467 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2468 #endif 2469 bus_space_tag_t t = fdc->sc_bustag; 2470 bus_space_handle_t h = fdc->sc_handle; 2471 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2472 2473 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2474 delay(10); 2475 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2476 return; 2477 #ifdef SUN4 2478 } 2479 #endif 2480 } 2481 2482 /* ARGSUSED */ 2483 void 2484 fd_mountroot_hook(struct device *dev) 2485 { 2486 int c; 2487 2488 fd_do_eject((struct fd_softc *)dev); 2489 printf("Insert filesystem floppy and press return."); 2490 for (;;) { 2491 c = cngetc(); 2492 if ((c == '\r') || (c == '\n')) { 2493 printf("\n"); 2494 break; 2495 } 2496 } 2497 } 2498 2499 #ifdef MEMORY_DISK_HOOKS 2500 2501 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2502 2503 int 2504 fd_read_md_image(size_t *sizep, void **addrp) 2505 { 2506 struct buf buf, *bp = &buf; 2507 dev_t dev; 2508 off_t offset; 2509 char *addr; 2510 2511 dev = makedev(54,0); /* XXX */ 2512 2513 MALLOC(addr, void *, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2514 *addrp = addr; 2515 2516 if (fdopen(dev, 0, S_IFCHR, NULL)) 2517 panic("fd: mountroot: fdopen"); 2518 2519 offset = 0; 2520 2521 for (;;) { 2522 bp->b_dev = dev; 2523 bp->b_error = 0; 2524 bp->b_resid = 0; 2525 bp->b_proc = NULL; 2526 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2527 bp->b_blkno = btodb(offset); 2528 bp->b_bcount = DEV_BSIZE; 2529 bp->b_data = addr; 2530 fdstrategy(bp); 2531 while ((bp->b_flags & B_DONE) == 0) { 2532 tsleep((void *)bp, PRIBIO + 1, "physio", 0); 2533 } 2534 if (bp->b_error) 2535 panic("fd: mountroot: fdread error %d", bp->b_error); 2536 2537 if (bp->b_resid != 0) 2538 break; 2539 2540 addr += DEV_BSIZE; 2541 offset += DEV_BSIZE; 2542 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2543 break; 2544 } 2545 (void)fdclose(dev, 0, S_IFCHR, NULL); 2546 *sizep = offset; 2547 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2548 return 0; 2549 } 2550 #endif /* MEMORY_DISK_HOOKS */ 2551 2552 static void 2553 fd_set_properties(struct fd_softc *fd) 2554 { 2555 prop_dictionary_t disk_info, odisk_info, geom; 2556 struct fd_type *fdt; 2557 int secsize; 2558 2559 fdt = fd->sc_deftype; 2560 2561 disk_info = prop_dictionary_create(); 2562 2563 geom = prop_dictionary_create(); 2564 2565 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2566 fdt->size); 2567 2568 switch (fdt->secsize) { 2569 case 2: 2570 secsize = 512; 2571 break; 2572 case 3: 2573 secsize = 1024; 2574 break; 2575 default: 2576 secsize = 0; 2577 } 2578 2579 prop_dictionary_set_uint32(geom, "sector-size", 2580 secsize); 2581 2582 prop_dictionary_set_uint16(geom, "sectors-per-track", 2583 fdt->sectrac); 2584 2585 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2586 fdt->heads); 2587 2588 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2589 fdt->cylinders); 2590 2591 prop_dictionary_set(disk_info, "geometry", geom); 2592 prop_object_release(geom); 2593 2594 prop_dictionary_set(device_properties(&fd->sc_dv), 2595 "disk-info", disk_info); 2596 2597 /* 2598 * Don't release disk_info here; we keep a reference to it. 2599 * disk_detach() will release it when we go away. 2600 */ 2601 2602 odisk_info = fd->sc_dk.dk_info; 2603 fd->sc_dk.dk_info = disk_info; 2604 if (odisk_info) 2605 prop_object_release(odisk_info); 2606 } 2607
Indexes created Tue Sep 30 10:09:55 GMT 2025