fdc.c revision 1.20
1 /* $NetBSD: fdc.c,v 1.20 2008/01/02 11:48:29 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 1.20 2008/01/02 11:48:29 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/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 #include <sys/intr.h> 137 138 #include <dev/cons.h> 139 140 #include <uvm/uvm_extern.h> 141 142 #include <machine/autoconf.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; /* softint(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, 0); 769 callout_init(&fdc->sc_intr_ch, 0); 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 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 802 if (fdc->sc_sicookie == NULL) { 803 printf("\n%s: cannot register soft interrupt handler\n", 804 fdc->sc_dev.dv_xname); 805 callout_stop(&fdc->sc_timo_ch); 806 callout_stop(&fdc->sc_intr_ch); 807 return -1; 808 } 809 #ifdef SUN4 810 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 811 #elif SUN4U 812 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 813 if (fdc->sc_flags & FDC_NOEJECT) 814 printf(": manual eject"); 815 printf("\n"); 816 #endif 817 818 #ifdef SUN4 819 fdciop = &fdc->sc_io; 820 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 821 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 822 #elif SUN4U 823 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 824 fdc_c_hwintr, fdc) == NULL) { 825 #endif 826 printf("\n%s: cannot register interrupt handler\n", 827 fdc->sc_dev.dv_xname); 828 callout_stop(&fdc->sc_timo_ch); 829 callout_stop(&fdc->sc_intr_ch); 830 softint_disestablish(fdc->sc_sicookie); 831 return -1; 832 } 833 834 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 835 fdc->sc_dev.dv_xname, "intr"); 836 837 /* physical limit: four drives per controller. */ 838 drive_attached = 0; 839 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 840 fa.fa_deftype = NULL; /* unknown */ 841 fa.fa_deftype = &fd_types[0]; /* XXX */ 842 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 843 drive_attached = 1; 844 } 845 846 if (drive_attached == 0) { 847 /* XXX - dis-establish interrupts here */ 848 /* return -1; */ 849 } 850 851 return 0; 852 } 853 854 int 855 fdmatch(struct device *parent, struct cfdata *match, void *aux) 856 { 857 struct fdc_softc *fdc = (void *)parent; 858 bus_space_tag_t t = fdc->sc_bustag; 859 bus_space_handle_t h = fdc->sc_handle; 860 struct fdc_attach_args *fa = aux; 861 int drive = fa->fa_drive; 862 int n, ok; 863 864 if (drive > 0) 865 /* XXX - for now, punt on more than one drive */ 866 return 0; 867 868 if ((fdc->sc_flags & FDC_82077) != 0) { 869 /* select drive and turn on motor */ 870 bus_space_write_1(t, h, fdc->sc_reg_dor, 871 drive | FDO_FRST | FDO_MOEN(drive)); 872 /* wait for motor to spin up */ 873 delay(250000); 874 #ifdef SUN4 875 } else { 876 auxregbisc(AUXIO4C_FDS, 0); 877 #endif 878 } 879 fdc->sc_nstat = 0; 880 fdc_wrfifo(fdc, NE7CMD_RECAL); 881 fdc_wrfifo(fdc, drive); 882 883 /* Wait for recalibration to complete */ 884 for (n = 0; n < 10000; n++) { 885 uint8_t v; 886 887 delay(1000); 888 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 889 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 890 /* wait a bit longer till device *really* is ready */ 891 delay(100000); 892 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 893 break; 894 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 895 /* 896 * Got `invalid command'; we interpret it 897 * to mean that the re-calibrate hasn't in 898 * fact finished yet 899 */ 900 continue; 901 break; 902 } 903 } 904 n = fdc->sc_nstat; 905 #ifdef FD_DEBUG 906 if (fdc_debug) { 907 int i; 908 printf("fdprobe: %d stati:", n); 909 for (i = 0; i < n; i++) 910 printf(" 0x%x", fdc->sc_status[i]); 911 printf("\n"); 912 } 913 #endif 914 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 915 916 /* turn off motor */ 917 if ((fdc->sc_flags & FDC_82077) != 0) { 918 /* deselect drive and turn motor off */ 919 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 920 #ifdef SUN4 921 } else { 922 auxregbisc(0, AUXIO4C_FDS); 923 #endif 924 } 925 926 return ok; 927 } 928 929 /* 930 * Controller is working, and drive responded. Attach it. 931 */ 932 void 933 fdattach(struct device *parent, struct device *self, void *aux) 934 { 935 struct fdc_softc *fdc = (void *)parent; 936 struct fd_softc *fd = (void *)self; 937 struct fdc_attach_args *fa = aux; 938 struct fd_type *type = fa->fa_deftype; 939 int drive = fa->fa_drive; 940 941 callout_init(&fd->sc_motoron_ch, 0); 942 callout_init(&fd->sc_motoroff_ch, 0); 943 944 /* XXX Allow `flags' to override device type? */ 945 946 if (type) 947 printf(": %s %d cyl, %d head, %d sec\n", type->name, 948 type->cylinders, type->heads, type->sectrac); 949 else 950 printf(": density unknown\n"); 951 952 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 953 fd->sc_cylin = -1; 954 fd->sc_drive = drive; 955 fd->sc_deftype = type; 956 fdc->sc_fd[drive] = fd; 957 958 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 959 fdc_wrfifo(fdc, type->steprate); 960 /* XXX head load time == 6ms */ 961 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 962 963 /* 964 * Initialize and attach the disk structure. 965 */ 966 disk_init(&fd->sc_dk, fd->sc_dv.dv_xname, &fddkdriver); 967 disk_attach(&fd->sc_dk); 968 969 /* 970 * Establish a mountroot_hook anyway in case we booted 971 * with RB_ASKNAME and get selected as the boot device. 972 */ 973 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 974 975 fd_set_properties(fd); 976 977 /* Make sure the drive motor gets turned off at shutdown time. */ 978 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 979 } 980 981 inline struct fd_type * 982 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 983 { 984 int type = FDTYPE(dev); 985 986 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 987 return NULL; 988 return type ? &fd_types[type - 1] : fd->sc_deftype; 989 } 990 991 void 992 fdstrategy(struct buf *bp) 993 { 994 struct fd_softc *fd; 995 int unit = FDUNIT(bp->b_dev); 996 int sz; 997 int s; 998 999 /* Valid unit, controller, and request? */ 1000 if (unit >= fd_cd.cd_ndevs || 1001 (fd = fd_cd.cd_devs[unit]) == 0 || 1002 bp->b_blkno < 0 || 1003 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1004 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1005 (bp->b_flags & B_FORMAT) == 0)) { 1006 bp->b_error = EINVAL; 1007 goto done; 1008 } 1009 1010 /* If it's a null transfer, return immediately. */ 1011 if (bp->b_bcount == 0) 1012 goto done; 1013 1014 sz = howmany(bp->b_bcount, DEV_BSIZE); 1015 1016 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1017 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1018 - bp->b_blkno; 1019 if (sz == 0) { 1020 /* If exactly at end of disk, return EOF. */ 1021 bp->b_resid = bp->b_bcount; 1022 goto done; 1023 } 1024 if (sz < 0) { 1025 /* If past end of disk, return EINVAL. */ 1026 bp->b_error = EINVAL; 1027 goto done; 1028 } 1029 /* Otherwise, truncate request. */ 1030 bp->b_bcount = sz << DEV_BSHIFT; 1031 } 1032 1033 bp->b_rawblkno = bp->b_blkno; 1034 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1035 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1036 1037 #ifdef FD_DEBUG 1038 if (fdc_debug > 1) 1039 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1040 (long long)bp->b_blkno, bp->b_bcount, 1041 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1042 #endif 1043 1044 /* Queue transfer on drive, activate drive and controller if idle. */ 1045 s = splbio(); 1046 BUFQ_PUT(fd->sc_q, bp); 1047 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1048 if (fd->sc_active == 0) 1049 fdstart(fd); 1050 #ifdef DIAGNOSTIC 1051 else { 1052 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1053 if (fdc->sc_state == DEVIDLE) { 1054 printf("fdstrategy: controller inactive\n"); 1055 fdcstart(fdc); 1056 } 1057 } 1058 #endif 1059 splx(s); 1060 return; 1061 1062 done: 1063 /* Toss transfer; we're done early. */ 1064 biodone(bp); 1065 } 1066 1067 void 1068 fdstart(struct fd_softc *fd) 1069 { 1070 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1071 int active = fdc->sc_drives.tqh_first != 0; 1072 1073 /* Link into controller queue. */ 1074 fd->sc_active = 1; 1075 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1076 1077 /* If controller not already active, start it. */ 1078 if (!active) 1079 fdcstart(fdc); 1080 } 1081 1082 void 1083 fdfinish(struct fd_softc *fd, struct buf *bp) 1084 { 1085 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1086 1087 /* 1088 * Move this drive to the end of the queue to give others a `fair' 1089 * chance. We only force a switch if N operations are completed while 1090 * another drive is waiting to be serviced, since there is a long motor 1091 * startup delay whenever we switch. 1092 */ 1093 (void)BUFQ_GET(fd->sc_q); 1094 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1095 fd->sc_ops = 0; 1096 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1097 if (BUFQ_PEEK(fd->sc_q) != NULL) { 1098 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1099 } else 1100 fd->sc_active = 0; 1101 } 1102 bp->b_resid = fd->sc_bcount; 1103 fd->sc_skip = 0; 1104 1105 biodone(bp); 1106 /* turn off motor 5s from now */ 1107 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1108 fdc->sc_state = DEVIDLE; 1109 } 1110 1111 void 1112 fdc_reset(struct fdc_softc *fdc) 1113 { 1114 bus_space_tag_t t = fdc->sc_bustag; 1115 bus_space_handle_t h = fdc->sc_handle; 1116 1117 if ((fdc->sc_flags & FDC_82077) != 0) { 1118 bus_space_write_1(t, h, fdc->sc_reg_dor, 1119 FDO_FDMAEN | FDO_MOEN(0)); 1120 } 1121 1122 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1123 delay(10); 1124 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1125 1126 if ((fdc->sc_flags & FDC_82077) != 0) { 1127 bus_space_write_1(t, h, fdc->sc_reg_dor, 1128 FDO_FRST | FDO_FDMAEN | FDO_DS); 1129 } 1130 #ifdef FD_DEBUG 1131 if (fdc_debug) 1132 printf("fdc reset\n"); 1133 #endif 1134 } 1135 1136 void 1137 fd_set_motor(struct fdc_softc *fdc) 1138 { 1139 struct fd_softc *fd; 1140 u_char status; 1141 int n; 1142 1143 if ((fdc->sc_flags & FDC_82077) != 0) { 1144 status = FDO_FRST | FDO_FDMAEN; 1145 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1146 status |= fd->sc_drive; 1147 1148 for (n = 0; n < 4; n++) 1149 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1150 status |= FDO_MOEN(n); 1151 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1152 fdc->sc_reg_dor, status); 1153 #ifdef SUN4 1154 } else { 1155 1156 for (n = 0; n < 4; n++) { 1157 if ((fd = fdc->sc_fd[n]) != NULL && 1158 (fd->sc_flags & FD_MOTOR) != 0) { 1159 auxregbisc(AUXIO4C_FDS, 0); 1160 return; 1161 } 1162 } 1163 auxregbisc(0, AUXIO4C_FDS); 1164 #endif 1165 } 1166 } 1167 1168 void 1169 fd_motor_off(void *arg) 1170 { 1171 struct fd_softc *fd = arg; 1172 int s; 1173 1174 s = splbio(); 1175 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1176 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1177 splx(s); 1178 } 1179 1180 void 1181 fd_motor_on(void *arg) 1182 { 1183 struct fd_softc *fd = arg; 1184 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1185 int s; 1186 1187 s = splbio(); 1188 fd->sc_flags &= ~FD_MOTOR_WAIT; 1189 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1190 (void)fdcstate(fdc); 1191 splx(s); 1192 } 1193 1194 /* 1195 * Get status bytes off the FDC after a command has finished 1196 * Returns the number of status bytes read; -1 on error. 1197 * The return value is also stored in `sc_nstat'. 1198 */ 1199 int 1200 fdcresult(struct fdc_softc *fdc) 1201 { 1202 bus_space_tag_t t = fdc->sc_bustag; 1203 bus_space_handle_t h = fdc->sc_handle; 1204 int j, n = 0; 1205 1206 for (j = 10000; j; j--) { 1207 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1208 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1209 if (v == NE7_RQM) 1210 return fdc->sc_nstat = n; 1211 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1212 if (n >= sizeof(fdc->sc_status)) { 1213 log(LOG_ERR, "fdcresult: overrun\n"); 1214 return -1; 1215 } 1216 fdc->sc_status[n++] = 1217 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1218 } else 1219 delay(1); 1220 } 1221 1222 log(LOG_ERR, "fdcresult: timeout\n"); 1223 return fdc->sc_nstat = -1; 1224 } 1225 1226 /* 1227 * Write a command byte to the FDC. 1228 * Returns 0 on success; -1 on failure (i.e. timeout) 1229 */ 1230 int 1231 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1232 { 1233 bus_space_tag_t t = fdc->sc_bustag; 1234 bus_space_handle_t h = fdc->sc_handle; 1235 int i; 1236 1237 for (i = 100000; i-- > 0;) { 1238 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1239 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1240 /* The chip is ready */ 1241 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1242 return 0; 1243 } 1244 delay(1); 1245 } 1246 return -1; 1247 } 1248 1249 int 1250 fdc_diskchange(struct fdc_softc *fdc) 1251 { 1252 1253 #ifdef SUN4 1254 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1255 #endif 1256 bus_space_tag_t t = fdc->sc_bustag; 1257 bus_space_handle_t h = fdc->sc_handle; 1258 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1259 return (v & FDI_DCHG) != 0; 1260 #ifdef SUN4 1261 } else if (CPU_ISSUN4C) { 1262 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1263 } 1264 return 0; 1265 #endif 1266 } 1267 1268 int 1269 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1270 { 1271 int unit, pmask; 1272 struct fd_softc *fd; 1273 struct fd_type *type; 1274 1275 unit = FDUNIT(dev); 1276 if (unit >= fd_cd.cd_ndevs) 1277 return ENXIO; 1278 fd = fd_cd.cd_devs[unit]; 1279 if (fd == NULL) 1280 return ENXIO; 1281 type = fd_dev_to_type(fd, dev); 1282 if (type == NULL) 1283 return ENXIO; 1284 1285 if ((fd->sc_flags & FD_OPEN) != 0 && 1286 fd->sc_type != type) 1287 return EBUSY; 1288 1289 fd->sc_type = type; 1290 fd->sc_cylin = -1; 1291 fd->sc_flags |= FD_OPEN; 1292 1293 /* 1294 * Only update the disklabel if we're not open anywhere else. 1295 */ 1296 if (fd->sc_dk.dk_openmask == 0) 1297 fdgetdisklabel(dev); 1298 1299 pmask = (1 << DISKPART(dev)); 1300 1301 switch (fmt) { 1302 case S_IFCHR: 1303 fd->sc_dk.dk_copenmask |= pmask; 1304 break; 1305 1306 case S_IFBLK: 1307 fd->sc_dk.dk_bopenmask |= pmask; 1308 break; 1309 } 1310 fd->sc_dk.dk_openmask = 1311 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1312 1313 return 0; 1314 } 1315 1316 int 1317 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1318 { 1319 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1320 int pmask = (1 << DISKPART(dev)); 1321 1322 fd->sc_flags &= ~FD_OPEN; 1323 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1324 1325 switch (fmt) { 1326 case S_IFCHR: 1327 fd->sc_dk.dk_copenmask &= ~pmask; 1328 break; 1329 1330 case S_IFBLK: 1331 fd->sc_dk.dk_bopenmask &= ~pmask; 1332 break; 1333 } 1334 fd->sc_dk.dk_openmask = 1335 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1336 1337 return 0; 1338 } 1339 1340 int 1341 fdread(dev_t dev, struct uio *uio, int flag) 1342 { 1343 1344 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1345 } 1346 1347 int 1348 fdwrite(dev_t dev, struct uio *uio, int flag) 1349 { 1350 1351 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1352 } 1353 1354 void 1355 fdcstart(struct fdc_softc *fdc) 1356 { 1357 1358 #ifdef DIAGNOSTIC 1359 /* only got here if controller's drive queue was inactive; should 1360 be in idle state */ 1361 if (fdc->sc_state != DEVIDLE) { 1362 printf("fdcstart: not idle\n"); 1363 return; 1364 } 1365 #endif 1366 (void)fdcstate(fdc); 1367 } 1368 1369 void 1370 fdcstatus(struct fdc_softc *fdc, const char *s) 1371 { 1372 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1373 int n; 1374 char bits[64]; 1375 1376 /* Just print last status */ 1377 n = fdc->sc_nstat; 1378 1379 #if 0 1380 /* 1381 * A 82072 seems to return <invalid command> on 1382 * gratuitous Sense Interrupt commands. 1383 */ 1384 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1385 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1386 (void)fdcresult(fdc); 1387 n = 2; 1388 } 1389 #endif 1390 1391 printf("%s: %s: state %d", 1392 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1393 1394 switch (n) { 1395 case 0: 1396 printf("\n"); 1397 break; 1398 case 2: 1399 printf(" (st0 %s cyl %d)\n", 1400 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1401 bits, sizeof(bits)), fdc->sc_status[1]); 1402 break; 1403 case 7: 1404 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1405 NE7_ST0BITS, bits, sizeof(bits))); 1406 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1407 NE7_ST1BITS, bits, sizeof(bits))); 1408 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1409 NE7_ST2BITS, bits, sizeof(bits))); 1410 printf(" cyl %d head %d sec %d)\n", 1411 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1412 break; 1413 #ifdef DIAGNOSTIC 1414 default: 1415 printf(" fdcstatus: weird size: %d\n", n); 1416 break; 1417 #endif 1418 } 1419 } 1420 1421 void 1422 fdctimeout(void *arg) 1423 { 1424 struct fdc_softc *fdc = arg; 1425 struct fd_softc *fd; 1426 int s; 1427 1428 s = splbio(); 1429 fd = fdc->sc_drives.tqh_first; 1430 if (fd == NULL) { 1431 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1432 fdc->sc_dev.dv_xname, 1433 fdc->sc_state, fdc->sc_istatus); 1434 fdc->sc_state = DEVIDLE; 1435 goto out; 1436 } 1437 1438 if (BUFQ_PEEK(fd->sc_q) != NULL) 1439 fdc->sc_state++; 1440 else 1441 fdc->sc_state = DEVIDLE; 1442 1443 (void)fdcstate(fdc); 1444 out: 1445 splx(s); 1446 1447 } 1448 1449 void 1450 fdcpseudointr(void *arg) 1451 { 1452 struct fdc_softc *fdc = arg; 1453 int s; 1454 1455 /* Just ensure it has the right spl. */ 1456 s = splbio(); 1457 (void)fdcstate(fdc); 1458 splx(s); 1459 } 1460 1461 1462 /* 1463 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1464 * handler is available. Unfortunately, we have no reliable way to 1465 * determine that the interrupt really came from the floppy controller; 1466 * just hope that the other devices that share this interrupt level 1467 * can do better.. 1468 */ 1469 int 1470 fdc_c_hwintr(void *arg) 1471 { 1472 struct fdc_softc *fdc = arg; 1473 bus_space_tag_t t = fdc->sc_bustag; 1474 bus_space_handle_t h = fdc->sc_handle; 1475 1476 switch (fdc->sc_itask) { 1477 case FDC_ITASK_NONE: 1478 return 0; 1479 case FDC_ITASK_SENSEI: 1480 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1481 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1482 else 1483 fdc->sc_istatus = FDC_ISTATUS_DONE; 1484 softint_schedule(fdc->sc_sicookie); 1485 return 1; 1486 case FDC_ITASK_RESULT: 1487 if (fdcresult(fdc) == -1) 1488 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1489 else 1490 fdc->sc_istatus = FDC_ISTATUS_DONE; 1491 softint_schedule(fdc->sc_sicookie); 1492 return 1; 1493 case FDC_ITASK_DMA: 1494 /* Proceed with pseudo-DMA below */ 1495 break; 1496 default: 1497 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1498 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1499 softint_schedule(fdc->sc_sicookie); 1500 return 1; 1501 } 1502 1503 /* 1504 * Pseudo DMA in progress 1505 */ 1506 for (;;) { 1507 uint8_t msr; 1508 1509 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1510 1511 if ((msr & NE7_RQM) == 0) 1512 /* That's all this round. */ 1513 break; 1514 1515 if ((msr & NE7_NDM) == 0) { 1516 /* Execution phase finished, get result. */ 1517 fdcresult(fdc); 1518 fdc->sc_istatus = FDC_ISTATUS_DONE; 1519 softint_schedule(fdc->sc_sicookie); 1520 break; 1521 } 1522 1523 if (fdc->sc_tc == 0) 1524 /* For some reason the controller wants to transfer 1525 more data then what we want to transfer. */ 1526 panic("fdc: overrun"); 1527 1528 /* Another byte can be transferred */ 1529 if ((msr & NE7_DIO) != 0) 1530 *fdc->sc_data = 1531 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1532 else 1533 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1534 *fdc->sc_data); 1535 1536 fdc->sc_data++; 1537 if (--fdc->sc_tc == 0) { 1538 FTC_FLIP; 1539 break; 1540 } 1541 } 1542 return 1; 1543 } 1544 1545 void 1546 fdcswintr(void *arg) 1547 { 1548 struct fdc_softc *fdc = arg; 1549 1550 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1551 /* This (software) interrupt is not for us */ 1552 return; 1553 1554 switch (fdc->sc_istatus) { 1555 case FDC_ISTATUS_ERROR: 1556 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1557 break; 1558 case FDC_ISTATUS_SPURIOUS: 1559 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1560 break; 1561 } 1562 1563 fdcstate(fdc); 1564 return; 1565 } 1566 1567 int 1568 fdcstate(struct fdc_softc *fdc) 1569 { 1570 1571 #define st0 fdc->sc_status[0] 1572 #define st1 fdc->sc_status[1] 1573 #define cyl fdc->sc_status[1] 1574 #define FDC_WRFIFO(fdc, c) do { \ 1575 if (fdc_wrfifo(fdc, (c))) { \ 1576 goto xxx; \ 1577 } \ 1578 } while(0) 1579 1580 struct fd_softc *fd; 1581 struct buf *bp; 1582 int read, head, sec, nblks; 1583 struct fd_type *type; 1584 struct ne7_fd_formb *finfo = NULL; 1585 1586 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1587 /* Prevent loop if the reset sequence produces errors */ 1588 if (fdc->sc_state != RESETCOMPLETE && 1589 fdc->sc_state != RECALWAIT && 1590 fdc->sc_state != RECALCOMPLETE) 1591 fdc->sc_state = DORESET; 1592 } 1593 1594 /* Clear I task/status field */ 1595 fdc->sc_istatus = FDC_ISTATUS_NONE; 1596 fdc->sc_itask = FDC_ITASK_NONE; 1597 1598 loop: 1599 /* Is there a drive for the controller to do a transfer with? */ 1600 fd = fdc->sc_drives.tqh_first; 1601 if (fd == NULL) { 1602 fdc->sc_state = DEVIDLE; 1603 return 0; 1604 } 1605 1606 /* Is there a transfer to this drive? If not, deactivate drive. */ 1607 bp = BUFQ_PEEK(fd->sc_q); 1608 if (bp == NULL) { 1609 fd->sc_ops = 0; 1610 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1611 fd->sc_active = 0; 1612 goto loop; 1613 } 1614 1615 if (bp->b_flags & B_FORMAT) 1616 finfo = (struct ne7_fd_formb *)bp->b_data; 1617 1618 switch (fdc->sc_state) { 1619 case DEVIDLE: 1620 fdc->sc_errors = 0; 1621 fd->sc_skip = 0; 1622 fd->sc_bcount = bp->b_bcount; 1623 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1624 callout_stop(&fd->sc_motoroff_ch); 1625 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1626 fdc->sc_state = MOTORWAIT; 1627 return 1; 1628 } 1629 if ((fd->sc_flags & FD_MOTOR) == 0) { 1630 /* Turn on the motor, being careful about pairing. */ 1631 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1632 if (ofd && ofd->sc_flags & FD_MOTOR) { 1633 callout_stop(&ofd->sc_motoroff_ch); 1634 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1635 } 1636 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1637 fd_set_motor(fdc); 1638 fdc->sc_state = MOTORWAIT; 1639 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1640 /* Allow .25s for motor to stabilize. */ 1641 callout_reset(&fd->sc_motoron_ch, hz / 4, 1642 fd_motor_on, fd); 1643 } else { 1644 fd->sc_flags &= ~FD_MOTOR_WAIT; 1645 goto loop; 1646 } 1647 return 1; 1648 } 1649 /* Make sure the right drive is selected. */ 1650 fd_set_motor(fdc); 1651 1652 if (fdc_diskchange(fdc)) 1653 goto dodskchg; 1654 1655 /*FALLTHROUGH*/ 1656 case DOSEEK: 1657 doseek: 1658 if ((fdc->sc_flags & FDC_EIS) && 1659 (bp->b_flags & B_FORMAT) == 0) { 1660 fd->sc_cylin = bp->b_cylinder; 1661 /* We use implied seek */ 1662 goto doio; 1663 } 1664 1665 if (fd->sc_cylin == bp->b_cylinder) 1666 goto doio; 1667 1668 fd->sc_cylin = -1; 1669 fdc->sc_state = SEEKWAIT; 1670 fdc->sc_nstat = 0; 1671 1672 iostat_seek(fd->sc_dk.dk_stats); 1673 1674 disk_busy(&fd->sc_dk); 1675 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1676 1677 /* specify command */ 1678 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1679 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1680 /* XXX head load time == 6ms */ 1681 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1682 1683 fdc->sc_itask = FDC_ITASK_SENSEI; 1684 /* seek function */ 1685 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1686 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1687 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1688 return 1; 1689 1690 case DODSKCHG: 1691 dodskchg: 1692 /* 1693 * Disk change: force a seek operation by going to cyl 1 1694 * followed by a recalibrate. 1695 */ 1696 disk_busy(&fd->sc_dk); 1697 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1698 fd->sc_cylin = -1; 1699 fdc->sc_nstat = 0; 1700 fdc->sc_state = DSKCHGWAIT; 1701 1702 fdc->sc_itask = FDC_ITASK_SENSEI; 1703 /* seek function */ 1704 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1705 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1706 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1707 return 1; 1708 1709 case DSKCHGWAIT: 1710 callout_stop(&fdc->sc_timo_ch); 1711 disk_unbusy(&fd->sc_dk, 0, 0); 1712 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1713 cyl != 1 * fd->sc_type->step) { 1714 fdcstatus(fdc, "dskchg seek failed"); 1715 fdc->sc_state = DORESET; 1716 } else 1717 fdc->sc_state = DORECAL; 1718 1719 if (fdc_diskchange(fdc)) { 1720 printf("%s: cannot clear disk change status\n", 1721 fdc->sc_dev.dv_xname); 1722 fdc->sc_state = DORESET; 1723 } 1724 goto loop; 1725 1726 case DOIO: 1727 doio: 1728 if (finfo != NULL) 1729 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1730 (char *)finfo; 1731 type = fd->sc_type; 1732 sec = fd->sc_blkno % type->seccyl; 1733 nblks = type->seccyl - sec; 1734 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1735 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1736 fd->sc_nblks = nblks; 1737 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1738 head = sec / type->sectrac; 1739 sec -= head * type->sectrac; 1740 #ifdef DIAGNOSTIC 1741 {int block; 1742 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1743 sec; 1744 if (block != fd->sc_blkno) { 1745 printf("fdcintr: block %d != blkno %d\n", block, 1746 (int)fd->sc_blkno); 1747 #ifdef DDB 1748 Debugger(); 1749 #endif 1750 }} 1751 #endif 1752 read = bp->b_flags & B_READ; 1753 1754 /* Setup for pseudo DMA */ 1755 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1756 fdc->sc_tc = fd->sc_nbytes; 1757 1758 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1759 fdc->sc_reg_drs, type->rate); 1760 #ifdef FD_DEBUG 1761 if (fdc_debug > 1) 1762 printf("fdcstate: doio: %s drive %d " 1763 "track %d head %d sec %d nblks %d\n", 1764 finfo ? "format" : 1765 (read ? "read" : "write"), 1766 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1767 #endif 1768 fdc->sc_state = IOCOMPLETE; 1769 fdc->sc_itask = FDC_ITASK_DMA; 1770 fdc->sc_nstat = 0; 1771 1772 disk_busy(&fd->sc_dk); 1773 1774 /* allow 3 seconds for operation */ 1775 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1776 1777 if (finfo != NULL) { 1778 /* formatting */ 1779 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1780 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1781 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1782 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1783 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1784 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1785 } else { 1786 if (read) 1787 FDC_WRFIFO(fdc, NE7CMD_READ); 1788 else 1789 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1790 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1791 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1792 FDC_WRFIFO(fdc, head); 1793 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1794 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1795 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1796 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1797 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1798 } 1799 1800 return 1; /* will return later */ 1801 1802 case SEEKWAIT: 1803 callout_stop(&fdc->sc_timo_ch); 1804 fdc->sc_state = SEEKCOMPLETE; 1805 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1806 /* allow 1/50 second for heads to settle */ 1807 callout_reset(&fdc->sc_intr_ch, hz / 50, 1808 fdcpseudointr, fdc); 1809 return 1; /* will return later */ 1810 } 1811 /*FALLTHROUGH*/ 1812 case SEEKCOMPLETE: 1813 /* no data on seek */ 1814 disk_unbusy(&fd->sc_dk, 0, 0); 1815 1816 /* Make sure seek really happened. */ 1817 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1818 cyl != bp->b_cylinder * fd->sc_type->step) { 1819 #ifdef FD_DEBUG 1820 if (fdc_debug) 1821 fdcstatus(fdc, "seek failed"); 1822 #endif 1823 fdcretry(fdc); 1824 goto loop; 1825 } 1826 fd->sc_cylin = bp->b_cylinder; 1827 goto doio; 1828 1829 case IOTIMEDOUT: 1830 /* 1831 * Try to abort the I/O operation without resetting 1832 * the chip first. Poke TC and arrange to pick up 1833 * the timed out I/O command's status. 1834 */ 1835 fdc->sc_itask = FDC_ITASK_RESULT; 1836 fdc->sc_state = IOCLEANUPWAIT; 1837 fdc->sc_nstat = 0; 1838 /* 1/10 second should be enough */ 1839 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1840 FTC_FLIP; 1841 return 1; 1842 1843 case IOCLEANUPTIMEDOUT: 1844 case SEEKTIMEDOUT: 1845 case RECALTIMEDOUT: 1846 case RESETTIMEDOUT: 1847 case DSKCHGTIMEDOUT: 1848 fdcstatus(fdc, "timeout"); 1849 1850 /* All other timeouts always roll through to a chip reset */ 1851 fdcretry(fdc); 1852 1853 /* Force reset, no matter what fdcretry() says */ 1854 fdc->sc_state = DORESET; 1855 goto loop; 1856 1857 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1858 callout_stop(&fdc->sc_timo_ch); 1859 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1860 (bp->b_flags & B_READ)); 1861 fdcretry(fdc); 1862 goto loop; 1863 1864 case IOCOMPLETE: /* IO DONE, post-analyze */ 1865 callout_stop(&fdc->sc_timo_ch); 1866 1867 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1868 (bp->b_flags & B_READ)); 1869 1870 if (fdc->sc_nstat != 7 || st1 != 0 || 1871 ((st0 & 0xf8) != 0 && 1872 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1873 #ifdef FD_DEBUG 1874 if (fdc_debug) { 1875 fdcstatus(fdc, bp->b_flags & B_READ ? 1876 "read failed" : "write failed"); 1877 printf("blkno %lld nblks %d nstat %d tc %d\n", 1878 (long long)fd->sc_blkno, fd->sc_nblks, 1879 fdc->sc_nstat, fdc->sc_tc); 1880 } 1881 #endif 1882 if (fdc->sc_nstat == 7 && 1883 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1884 1885 /* 1886 * Silently retry overruns if no other 1887 * error bit is set. Adjust threshold. 1888 */ 1889 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1890 if (thr < 15) { 1891 thr++; 1892 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1893 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1894 #ifdef FD_DEBUG 1895 if (fdc_debug) 1896 printf("fdc: %d -> threshold\n", 1897 thr); 1898 #endif 1899 fdconf(fdc); 1900 fdc->sc_overruns = 0; 1901 } 1902 if (++fdc->sc_overruns < 3) { 1903 fdc->sc_state = DOIO; 1904 goto loop; 1905 } 1906 } 1907 fdcretry(fdc); 1908 goto loop; 1909 } 1910 if (fdc->sc_errors) { 1911 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1912 fd->sc_skip / FD_BSIZE(fd), 1913 (struct disklabel *)NULL); 1914 printf("\n"); 1915 fdc->sc_errors = 0; 1916 } else { 1917 if (--fdc->sc_overruns < -20) { 1918 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1919 if (thr > 0) { 1920 thr--; 1921 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1922 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1923 #ifdef FD_DEBUG 1924 if (fdc_debug) 1925 printf("fdc: %d -> threshold\n", 1926 thr); 1927 #endif 1928 fdconf(fdc); 1929 } 1930 fdc->sc_overruns = 0; 1931 } 1932 } 1933 fd->sc_blkno += fd->sc_nblks; 1934 fd->sc_skip += fd->sc_nbytes; 1935 fd->sc_bcount -= fd->sc_nbytes; 1936 if (finfo == NULL && fd->sc_bcount > 0) { 1937 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1938 goto doseek; 1939 } 1940 fdfinish(fd, bp); 1941 goto loop; 1942 1943 case DORESET: 1944 /* try a reset, keep motor on */ 1945 fd_set_motor(fdc); 1946 delay(100); 1947 fdc->sc_nstat = 0; 1948 fdc->sc_itask = FDC_ITASK_SENSEI; 1949 fdc->sc_state = RESETCOMPLETE; 1950 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1951 fdc_reset(fdc); 1952 return 1; /* will return later */ 1953 1954 case RESETCOMPLETE: 1955 callout_stop(&fdc->sc_timo_ch); 1956 fdconf(fdc); 1957 1958 /* FALLTHROUGH */ 1959 case DORECAL: 1960 fdc->sc_state = RECALWAIT; 1961 fdc->sc_itask = FDC_ITASK_SENSEI; 1962 fdc->sc_nstat = 0; 1963 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1964 /* recalibrate function */ 1965 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1966 FDC_WRFIFO(fdc, fd->sc_drive); 1967 return 1; /* will return later */ 1968 1969 case RECALWAIT: 1970 callout_stop(&fdc->sc_timo_ch); 1971 fdc->sc_state = RECALCOMPLETE; 1972 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1973 /* allow 1/30 second for heads to settle */ 1974 callout_reset(&fdc->sc_intr_ch, hz / 30, 1975 fdcpseudointr, fdc); 1976 return 1; /* will return later */ 1977 } 1978 1979 case RECALCOMPLETE: 1980 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1981 #ifdef FD_DEBUG 1982 if (fdc_debug) 1983 fdcstatus(fdc, "recalibrate failed"); 1984 #endif 1985 fdcretry(fdc); 1986 goto loop; 1987 } 1988 fd->sc_cylin = 0; 1989 goto doseek; 1990 1991 case MOTORWAIT: 1992 if (fd->sc_flags & FD_MOTOR_WAIT) 1993 return 1; /* time's not up yet */ 1994 goto doseek; 1995 1996 default: 1997 fdcstatus(fdc, "stray interrupt"); 1998 return 1; 1999 } 2000 #ifdef DIAGNOSTIC 2001 panic("fdcintr: impossible"); 2002 #endif 2003 2004 xxx: 2005 /* 2006 * We get here if the chip locks up in FDC_WRFIFO() 2007 * Cancel any operation and schedule a reset 2008 */ 2009 callout_stop(&fdc->sc_timo_ch); 2010 fdcretry(fdc); 2011 fdc->sc_state = DORESET; 2012 goto loop; 2013 2014 #undef st0 2015 #undef st1 2016 #undef cyl 2017 } 2018 2019 void 2020 fdcretry(struct fdc_softc *fdc) 2021 { 2022 struct fd_softc *fd; 2023 struct buf *bp; 2024 int error = EIO; 2025 2026 fd = fdc->sc_drives.tqh_first; 2027 bp = BUFQ_PEEK(fd->sc_q); 2028 2029 fdc->sc_overruns = 0; 2030 if (fd->sc_opts & FDOPT_NORETRY) 2031 goto fail; 2032 2033 switch (fdc->sc_errors) { 2034 case 0: 2035 if (fdc->sc_nstat == 7 && 2036 (fdc->sc_status[0] & 0xd8) == 0x40 && 2037 (fdc->sc_status[1] & 0x2) == 0x2) { 2038 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 2039 error = EROFS; 2040 goto failsilent; 2041 } 2042 /* try again */ 2043 fdc->sc_state = 2044 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2045 break; 2046 2047 case 1: case 2: case 3: 2048 /* didn't work; try recalibrating */ 2049 fdc->sc_state = DORECAL; 2050 break; 2051 2052 case 4: 2053 if (fdc->sc_nstat == 7 && 2054 fdc->sc_status[0] == 0 && 2055 fdc->sc_status[1] == 0 && 2056 fdc->sc_status[2] == 0) { 2057 /* 2058 * We've retried a few times and we've got 2059 * valid status and all three status bytes 2060 * are zero. Assume this condition is the 2061 * result of no disk loaded into the drive. 2062 */ 2063 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 2064 error = ENODEV; 2065 goto failsilent; 2066 } 2067 2068 /* still no go; reset the bastard */ 2069 fdc->sc_state = DORESET; 2070 break; 2071 2072 default: 2073 fail: 2074 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2075 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2076 fd->sc_skip / FD_BSIZE(fd), 2077 (struct disklabel *)NULL); 2078 printf("\n"); 2079 fdcstatus(fdc, "controller status"); 2080 } 2081 2082 failsilent: 2083 bp->b_error = error; 2084 fdfinish(fd, bp); 2085 } 2086 fdc->sc_errors++; 2087 } 2088 2089 int 2090 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2091 { 2092 struct fd_softc *fd; 2093 struct fdc_softc *fdc; 2094 struct fdformat_parms *form_parms; 2095 struct fdformat_cmd *form_cmd; 2096 struct ne7_fd_formb *fd_formb; 2097 int il[FD_MAX_NSEC + 1]; 2098 int unit; 2099 int i, j; 2100 int error; 2101 2102 unit = FDUNIT(dev); 2103 if (unit >= fd_cd.cd_ndevs) 2104 return ENXIO; 2105 2106 fd = fd_cd.cd_devs[FDUNIT(dev)]; 2107 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 2108 2109 switch (cmd) { 2110 case DIOCGDINFO: 2111 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2112 return 0; 2113 2114 case DIOCWLABEL: 2115 if ((flag & FWRITE) == 0) 2116 return EBADF; 2117 /* XXX do something */ 2118 return 0; 2119 2120 case DIOCWDINFO: 2121 if ((flag & FWRITE) == 0) 2122 return EBADF; 2123 2124 error = setdisklabel(fd->sc_dk.dk_label, 2125 (struct disklabel *)addr, 0, 2126 fd->sc_dk.dk_cpulabel); 2127 if (error) 2128 return error; 2129 2130 error = writedisklabel(dev, fdstrategy, 2131 fd->sc_dk.dk_label, 2132 fd->sc_dk.dk_cpulabel); 2133 return error; 2134 2135 case DIOCLOCK: 2136 /* 2137 * Nothing to do here, really. 2138 */ 2139 return 0; 2140 2141 case DIOCEJECT: 2142 if (*(int *)addr == 0) { 2143 int part = DISKPART(dev); 2144 /* 2145 * Don't force eject: check that we are the only 2146 * partition open. If so, unlock it. 2147 */ 2148 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2149 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2150 fd->sc_dk.dk_openmask) { 2151 return EBUSY; 2152 } 2153 } 2154 /* FALLTHROUGH */ 2155 case ODIOCEJECT: 2156 if (fdc->sc_flags & FDC_NOEJECT) 2157 return EINVAL; 2158 fd_do_eject(fd); 2159 return 0; 2160 2161 case FDIOCGETFORMAT: 2162 form_parms = (struct fdformat_parms *)addr; 2163 form_parms->fdformat_version = FDFORMAT_VERSION; 2164 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2165 form_parms->ncyl = fd->sc_type->cylinders; 2166 form_parms->nspt = fd->sc_type->sectrac; 2167 form_parms->ntrk = fd->sc_type->heads; 2168 form_parms->stepspercyl = fd->sc_type->step; 2169 form_parms->gaplen = fd->sc_type->gap2; 2170 form_parms->fillbyte = fd->sc_type->fillbyte; 2171 form_parms->interleave = fd->sc_type->interleave; 2172 switch (fd->sc_type->rate) { 2173 case FDC_500KBPS: 2174 form_parms->xfer_rate = 500 * 1024; 2175 break; 2176 case FDC_300KBPS: 2177 form_parms->xfer_rate = 300 * 1024; 2178 break; 2179 case FDC_250KBPS: 2180 form_parms->xfer_rate = 250 * 1024; 2181 break; 2182 default: 2183 return EINVAL; 2184 } 2185 return 0; 2186 2187 case FDIOCSETFORMAT: 2188 if ((flag & FWRITE) == 0) 2189 return EBADF; /* must be opened for writing */ 2190 2191 form_parms = (struct fdformat_parms *)addr; 2192 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2193 return EINVAL;/* wrong version of formatting prog */ 2194 2195 i = form_parms->nbps >> 7; 2196 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2197 i & ~(1 << (ffs(i)-1))) 2198 /* not a power-of-two multiple of 128 */ 2199 return EINVAL; 2200 2201 switch (form_parms->xfer_rate) { 2202 case 500 * 1024: 2203 fd->sc_type->rate = FDC_500KBPS; 2204 break; 2205 case 300 * 1024: 2206 fd->sc_type->rate = FDC_300KBPS; 2207 break; 2208 case 250 * 1024: 2209 fd->sc_type->rate = FDC_250KBPS; 2210 break; 2211 default: 2212 return EINVAL; 2213 } 2214 2215 if (form_parms->nspt > FD_MAX_NSEC || 2216 form_parms->fillbyte > 0xff || 2217 form_parms->interleave > 0xff) 2218 return EINVAL; 2219 fd->sc_type->sectrac = form_parms->nspt; 2220 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2221 return EINVAL; 2222 fd->sc_type->heads = form_parms->ntrk; 2223 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2224 fd->sc_type->secsize = ffs(i)-1; 2225 fd->sc_type->gap2 = form_parms->gaplen; 2226 fd->sc_type->cylinders = form_parms->ncyl; 2227 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2228 form_parms->nbps / DEV_BSIZE; 2229 fd->sc_type->step = form_parms->stepspercyl; 2230 fd->sc_type->fillbyte = form_parms->fillbyte; 2231 fd->sc_type->interleave = form_parms->interleave; 2232 return 0; 2233 2234 case FDIOCFORMAT_TRACK: 2235 if((flag & FWRITE) == 0) 2236 /* must be opened for writing */ 2237 return EBADF; 2238 form_cmd = (struct fdformat_cmd *)addr; 2239 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2240 /* wrong version of formatting prog */ 2241 return EINVAL; 2242 2243 if (form_cmd->head >= fd->sc_type->heads || 2244 form_cmd->cylinder >= fd->sc_type->cylinders) { 2245 return EINVAL; 2246 } 2247 2248 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2249 M_TEMP, M_NOWAIT); 2250 if (fd_formb == 0) 2251 return ENOMEM; 2252 2253 fd_formb->head = form_cmd->head; 2254 fd_formb->cyl = form_cmd->cylinder; 2255 fd_formb->transfer_rate = fd->sc_type->rate; 2256 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2257 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2258 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2259 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2260 2261 bzero(il, sizeof il); 2262 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2263 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2264 j++; 2265 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2266 j += fd->sc_type->interleave; 2267 } 2268 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2269 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2270 fd_formb->fd_formb_headno(i) = form_cmd->head; 2271 fd_formb->fd_formb_secno(i) = il[i + 1]; 2272 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2273 } 2274 2275 error = fdformat(dev, fd_formb, l->l_proc); 2276 free(fd_formb, M_TEMP); 2277 return error; 2278 2279 case FDIOCGETOPTS: /* get drive options */ 2280 *(int *)addr = fd->sc_opts; 2281 return 0; 2282 2283 case FDIOCSETOPTS: /* set drive options */ 2284 fd->sc_opts = *(int *)addr; 2285 return 0; 2286 2287 #ifdef FD_DEBUG 2288 case _IO('f', 100): 2289 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2290 fdcresult(fdc); 2291 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2292 for (i = 0; i < fdc->sc_nstat; i++) 2293 printf(" 0x%x", fdc->sc_status[i]); 2294 printf(">\n"); 2295 return 0; 2296 2297 case _IOW('f', 101, int): 2298 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2299 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2300 fdconf(fdc); 2301 return 0; 2302 2303 case _IO('f', 102): 2304 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2305 fdcresult(fdc); 2306 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2307 for (i=0; i< fdc->sc_nstat; i++) 2308 printf(" 0x%x", fdc->sc_status[i]); 2309 printf(">\n"); 2310 return 0; 2311 #endif 2312 default: 2313 return ENOTTY; 2314 } 2315 2316 #ifdef DIAGNOSTIC 2317 panic("fdioctl: impossible"); 2318 #endif 2319 } 2320 2321 int 2322 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2323 { 2324 int rv = 0; 2325 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2326 struct fd_type *type = fd->sc_type; 2327 struct buf *bp; 2328 2329 /* set up a buffer header for fdstrategy() */ 2330 bp = getiobuf(NULL, false); 2331 if (bp == NULL) 2332 return ENOBUFS; 2333 2334 bp->b_vp = NULL; 2335 bp->b_cflags = BC_BUSY; 2336 bp->b_flags = 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_cflags = BC_BUSY; 2520 bp->b_flags = B_PHYS | B_RAW | B_READ; 2521 bp->b_blkno = btodb(offset); 2522 bp->b_bcount = DEV_BSIZE; 2523 bp->b_data = addr; 2524 fdstrategy(bp); 2525 biowait(bp); 2526 if (bp->b_error) 2527 panic("fd: mountroot: fdread error %d", bp->b_error); 2528 2529 if (bp->b_resid != 0) 2530 break; 2531 2532 addr += DEV_BSIZE; 2533 offset += DEV_BSIZE; 2534 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2535 break; 2536 } 2537 (void)fdclose(dev, 0, S_IFCHR, NULL); 2538 *sizep = offset; 2539 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2540 return 0; 2541 } 2542 #endif /* MEMORY_DISK_HOOKS */ 2543 2544 static void 2545 fd_set_properties(struct fd_softc *fd) 2546 { 2547 prop_dictionary_t disk_info, odisk_info, geom; 2548 struct fd_type *fdt; 2549 int secsize; 2550 2551 fdt = fd->sc_deftype; 2552 2553 disk_info = prop_dictionary_create(); 2554 2555 geom = prop_dictionary_create(); 2556 2557 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2558 fdt->size); 2559 2560 switch (fdt->secsize) { 2561 case 2: 2562 secsize = 512; 2563 break; 2564 case 3: 2565 secsize = 1024; 2566 break; 2567 default: 2568 secsize = 0; 2569 } 2570 2571 prop_dictionary_set_uint32(geom, "sector-size", 2572 secsize); 2573 2574 prop_dictionary_set_uint16(geom, "sectors-per-track", 2575 fdt->sectrac); 2576 2577 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2578 fdt->heads); 2579 2580 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2581 fdt->cylinders); 2582 2583 prop_dictionary_set(disk_info, "geometry", geom); 2584 prop_object_release(geom); 2585 2586 prop_dictionary_set(device_properties(&fd->sc_dv), 2587 "disk-info", disk_info); 2588 2589 /* 2590 * Don't release disk_info here; we keep a reference to it. 2591 * disk_detach() will release it when we go away. 2592 */ 2593 2594 odisk_info = fd->sc_dk.dk_info; 2595 fd->sc_dk.dk_info = disk_info; 2596 if (odisk_info) 2597 prop_object_release(odisk_info); 2598 } 2599
Indexes created Tue Sep 30 10:09:55 GMT 2025