1 /* $NetBSD: fdc.c,v 1.50 2021/04/24 23:36:49 thorpej 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Don Ahn. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)fd.c 7.4 (Berkeley) 5/25/91 64 */ 65 66 /*- 67 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 68 * 69 * This code is derived from software contributed to Berkeley by 70 * Don Ahn. 71 * 72 * Redistribution and use in source and binary forms, with or without 73 * modification, are permitted provided that the following conditions 74 * are met: 75 * 1. Redistributions of source code must retain the above copyright 76 * notice, this list of conditions and the following disclaimer. 77 * 2. Redistributions in binary form must reproduce the above copyright 78 * notice, this list of conditions and the following disclaimer in the 79 * documentation and/or other materials provided with the distribution. 80 * 3. All advertising materials mentioning features or use of this software 81 * must display the following acknowledgement: 82 * This product includes software developed by the University of 83 * California, Berkeley and its contributors. 84 * 4. Neither the name of the University nor the names of its contributors 85 * may be used to endorse or promote products derived from this software 86 * without specific prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 91 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 98 * SUCH DAMAGE. 99 * 100 * @(#)fd.c 7.4 (Berkeley) 5/25/91 101 */ 102 103 #include <sys/cdefs.h> 104 __KERNEL_RCSID(0, "$NetBSD: fdc.c,v 1.50 2021/04/24 23:36:49 thorpej Exp $"); 105 106 #include "opt_ddb.h" 107 #include "opt_md.h" 108 109 #include <sys/param.h> 110 #include <sys/types.h> 111 #include <sys/systm.h> 112 #include <sys/callout.h> 113 #include <sys/kernel.h> 114 #include <sys/file.h> 115 #include <sys/ioctl.h> 116 #include <sys/device.h> 117 #include <sys/disklabel.h> 118 #include <sys/disk.h> 119 #include <sys/fdio.h> 120 #include <sys/buf.h> 121 #include <sys/bufq.h> 122 #include <sys/kmem.h> 123 #include <sys/proc.h> 124 #include <sys/uio.h> 125 #include <sys/stat.h> 126 #include <sys/syslog.h> 127 #include <sys/queue.h> 128 #include <sys/conf.h> 129 #include <sys/intr.h> 130 131 #include <dev/cons.h> 132 133 #include <uvm/uvm_extern.h> 134 135 #include <machine/autoconf.h> 136 137 #ifdef SUN4 138 #include <sparc/sparc/auxreg.h> 139 #include <sparc/dev/fdreg.h> 140 #include <sparc/dev/fdvar.h> 141 #elif SUN4U 142 #include <dev/ebus/ebusreg.h> 143 #include <dev/ebus/ebusvar.h> 144 #include <dev/sbus/sbusvar.h> 145 #include <sparc64/dev/auxioreg.h> 146 #include <sparc64/dev/auxiovar.h> 147 #include <sparc64/dev/fdcreg.h> 148 #include <sparc64/dev/fdcvar.h> 149 #endif 150 151 #include <prop/proplib.h> 152 153 #define FDUNIT(dev) (minor(dev) / 8) 154 #define FDTYPE(dev) (minor(dev) % 8) 155 156 /* (mis)use device use flag to identify format operation */ 157 #define B_FORMAT B_DEVPRIVATE 158 159 #define FD_DEBUG 160 #ifdef FD_DEBUG 161 int fdc_debug = 0; 162 #endif 163 164 enum fdc_state { 165 DEVIDLE = 0, 166 MOTORWAIT, /* 1 */ 167 DOSEEK, /* 2 */ 168 SEEKWAIT, /* 3 */ 169 SEEKTIMEDOUT, /* 4 */ 170 SEEKCOMPLETE, /* 5 */ 171 DOIO, /* 6 */ 172 IOCOMPLETE, /* 7 */ 173 IOTIMEDOUT, /* 8 */ 174 IOCLEANUPWAIT, /* 9 */ 175 IOCLEANUPTIMEDOUT,/*10 */ 176 DORESET, /* 11 */ 177 RESETCOMPLETE, /* 12 */ 178 RESETTIMEDOUT, /* 13 */ 179 DORECAL, /* 14 */ 180 RECALWAIT, /* 15 */ 181 RECALTIMEDOUT, /* 16 */ 182 RECALCOMPLETE, /* 17 */ 183 DODSKCHG, /* 18 */ 184 DSKCHGWAIT, /* 19 */ 185 DSKCHGTIMEDOUT, /* 20 */ 186 }; 187 188 /* software state, per controller */ 189 struct fdc_softc { 190 device_t sc_dev; /* boilerplate */ 191 bus_space_tag_t sc_bustag; 192 193 struct callout sc_timo_ch; /* timeout callout */ 194 struct callout sc_intr_ch; /* pseudo-intr callout */ 195 196 struct fd_softc *sc_fd[4]; /* pointers to children */ 197 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 198 enum fdc_state sc_state; 199 int sc_flags; 200 #define FDC_82077 0x01 201 #define FDC_NEEDHEADSETTLE 0x02 202 #define FDC_EIS 0x04 203 #define FDC_NEEDMOTORWAIT 0x08 204 #define FDC_NOEJECT 0x10 205 #define FDC_EBUS 0x20 206 int sc_errors; /* number of retries so far */ 207 int sc_overruns; /* number of DMA overruns */ 208 int sc_cfg; /* current configuration */ 209 struct fdcio sc_io; 210 #define sc_handle sc_io.fdcio_handle 211 #define sc_reg_msr sc_io.fdcio_reg_msr 212 #define sc_reg_fifo sc_io.fdcio_reg_fifo 213 #define sc_reg_dor sc_io.fdcio_reg_dor 214 #define sc_reg_dir sc_io.fdcio_reg_dir 215 #define sc_reg_drs sc_io.fdcio_reg_msr 216 #define sc_itask sc_io.fdcio_itask 217 #define sc_istatus sc_io.fdcio_istatus 218 #define sc_data sc_io.fdcio_data 219 #define sc_tc sc_io.fdcio_tc 220 #define sc_nstat sc_io.fdcio_nstat 221 #define sc_status sc_io.fdcio_status 222 #define sc_intrcnt sc_io.fdcio_intrcnt 223 224 void *sc_sicookie; /* softint(9) cookie */ 225 }; 226 227 #ifdef SUN4 228 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 229 #endif 230 231 /* controller driver configuration */ 232 #ifdef SUN4 233 int fdcmatch_mainbus(device_t, cfdata_t, void*); 234 int fdcmatch_obio(device_t, cfdata_t, void *); 235 void fdcattach_mainbus(device_t, device_t, void *); 236 void fdcattach_obio(device_t, device_t, void *); 237 #elif SUN4U 238 int fdcmatch_sbus(device_t, cfdata_t, void *); 239 int fdcmatch_ebus(device_t, cfdata_t, void *); 240 void fdcattach_sbus(device_t, device_t, void *); 241 void fdcattach_ebus(device_t, device_t, void *); 242 #endif 243 244 int fdcattach(struct fdc_softc *, int); 245 246 #ifdef SUN4 247 CFATTACH_DECL_NEW(fdc_mainbus, sizeof(struct fdc_softc), 248 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 249 250 CFATTACH_DECL_NEW(fdc_obio, sizeof(struct fdc_softc), 251 fdcmatch_obio, fdcattach_obio, NULL, NULL); 252 #elif SUN4U 253 CFATTACH_DECL_NEW(fdc_sbus, sizeof(struct fdc_softc), 254 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 255 256 CFATTACH_DECL_NEW(fdc_ebus, sizeof(struct fdc_softc), 257 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 258 #endif 259 260 static struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 261 262 /* 263 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 264 * we tell them apart. 265 */ 266 struct fd_type { 267 int sectrac; /* sectors per track */ 268 int heads; /* number of heads */ 269 int seccyl; /* sectors per cylinder */ 270 int secsize; /* size code for sectors */ 271 int datalen; /* data len when secsize = 0 */ 272 int steprate; /* step rate and head unload time */ 273 int gap1; /* gap len between sectors */ 274 int gap2; /* formatting gap */ 275 int cylinders; /* total num of cylinders */ 276 int size; /* size of disk in sectors */ 277 int step; /* steps per cylinder */ 278 int rate; /* transfer speed code */ 279 int fillbyte; /* format fill byte */ 280 int interleave; /* interleave factor (formatting) */ 281 const char *name; 282 }; 283 284 /* The order of entries in the following table is important -- BEWARE! */ 285 struct fd_type fd_types[] = { 286 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 287 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 288 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 289 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 290 }; 291 292 /* software state, per disk (with up to 4 disks per ctlr) */ 293 struct fd_softc { 294 device_t sc_dev; /* generic device info */ 295 struct disk sc_dk; /* generic disk info */ 296 297 struct fd_type *sc_deftype; /* default type descriptor */ 298 struct fd_type *sc_type; /* current type descriptor */ 299 300 struct callout sc_motoron_ch; 301 struct callout sc_motoroff_ch; 302 303 daddr_t sc_blkno; /* starting block number */ 304 int sc_bcount; /* byte count left */ 305 int sc_skip; /* bytes already transferred */ 306 int sc_nblks; /* number of blocks currently transferring */ 307 int sc_nbytes; /* number of bytes currently transferring */ 308 309 int sc_drive; /* physical unit number */ 310 int sc_flags; 311 #define FD_OPEN 0x01 /* it's open */ 312 #define FD_MOTOR 0x02 /* motor should be on */ 313 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 314 int sc_cylin; /* where we think the head is */ 315 int sc_opts; /* user-set options */ 316 317 TAILQ_ENTRY(fd_softc) sc_drivechain; 318 int sc_ops; /* I/O ops since last switch */ 319 struct bufq_state *sc_q;/* pending I/O requests */ 320 int sc_active; /* number of active I/O requests */ 321 }; 322 323 /* floppy driver configuration */ 324 int fdmatch(device_t, cfdata_t, void *); 325 void fdattach(device_t, device_t, void *); 326 bool fdshutdown(device_t, int); 327 bool fdsuspend(device_t, const pmf_qual_t *); 328 329 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 330 fdmatch, fdattach, NULL, NULL); 331 332 extern struct cfdriver fd_cd; 333 334 dev_type_open(fdopen); 335 dev_type_close(fdclose); 336 dev_type_read(fdread); 337 dev_type_write(fdwrite); 338 dev_type_ioctl(fdioctl); 339 dev_type_strategy(fdstrategy); 340 341 const struct bdevsw fd_bdevsw = { 342 .d_open = fdopen, 343 .d_close = fdclose, 344 .d_strategy = fdstrategy, 345 .d_ioctl = fdioctl, 346 .d_dump = nodump, 347 .d_psize = nosize, 348 .d_discard = nodiscard, 349 .d_flag = D_DISK 350 }; 351 352 const struct cdevsw fd_cdevsw = { 353 .d_open = fdopen, 354 .d_close = fdclose, 355 .d_read = fdread, 356 .d_write = fdwrite, 357 .d_ioctl = fdioctl, 358 .d_stop = nostop, 359 .d_tty = notty, 360 .d_poll = nopoll, 361 .d_mmap = nommap, 362 .d_kqfilter = nokqfilter, 363 .d_discard = nodiscard, 364 .d_flag = D_DISK 365 }; 366 367 void fdgetdisklabel(dev_t); 368 int fd_get_parms(struct fd_softc *); 369 void fdstrategy(struct buf *); 370 void fdstart(struct fd_softc *); 371 int fdprint(void *, const char *); 372 373 struct dkdriver fddkdriver = { 374 .d_strategy = fdstrategy 375 }; 376 377 struct fd_type *fd_nvtotype(char *, int, int); 378 void fd_set_motor(struct fdc_softc *); 379 void fd_motor_off(void *); 380 void fd_motor_on(void *); 381 int fdcresult(struct fdc_softc *); 382 int fdc_wrfifo(struct fdc_softc *, uint8_t); 383 void fdcstart(struct fdc_softc *); 384 void fdcstatus(struct fdc_softc *, const char *); 385 void fdc_reset(struct fdc_softc *); 386 int fdc_diskchange(struct fdc_softc *); 387 void fdctimeout(void *); 388 void fdcpseudointr(void *); 389 int fdc_c_hwintr(void *); 390 void fdchwintr(void); 391 void fdcswintr(void *); 392 int fdcstate(struct fdc_softc *); 393 void fdcretry(struct fdc_softc *); 394 void fdfinish(struct fd_softc *, struct buf *); 395 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 396 void fd_do_eject(struct fd_softc *); 397 void fd_mountroot_hook(device_t ); 398 static int fdconf(struct fdc_softc *); 399 static void establish_chip_type( 400 struct fdc_softc *, 401 bus_space_tag_t, 402 bus_addr_t, 403 bus_size_t, 404 bus_space_handle_t); 405 static void fd_set_geometry(struct fd_softc *); 406 407 #ifdef MEMORY_DISK_HOOKS 408 int fd_read_md_image(size_t *, void **); 409 #endif 410 411 #ifdef SUN4 412 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 413 414 int 415 fdcmatch_mainbus(device_t parent, cfdata_t match, void *aux) 416 { 417 struct mainbus_attach_args *ma = aux; 418 419 /* 420 * Floppy controller is on mainbus on sun4c. 421 */ 422 if (!CPU_ISSUN4C) 423 return 0; 424 425 /* sun4c PROMs call the controller "fd" */ 426 if (strcmp("fd", ma->ma_name) != 0) 427 return 0; 428 429 return bus_space_probe(ma->ma_bustag, 430 ma->ma_paddr, 431 1, /* probe size */ 432 0, /* offset */ 433 0, /* flags */ 434 NULL, NULL); 435 } 436 437 int 438 fdcmatch_obio(device_t parent, cfdata_t match, void *aux) 439 { 440 union obio_attach_args *uoba = aux; 441 struct sbus_attach_args *sa; 442 443 /* 444 * Floppy controller is on obio on sun4m. 445 */ 446 if (uoba->uoba_isobio4 != 0) 447 return 0; 448 449 sa = &uoba->uoba_sbus; 450 451 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 452 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 453 return 0; 454 455 return bus_space_probe(sa->sa_bustag, 456 sbus_bus_addr(sa->sa_bustag, 457 sa->sa_slot, sa->sa_offset), 458 1, /* probe size */ 459 0, /* offset */ 460 0, /* flags */ 461 NULL, NULL); 462 } 463 464 #elif SUN4U 465 466 int 467 fdcmatch_sbus(device_t parent, cfdata_t match, void *aux) 468 { 469 struct sbus_attach_args *sa = aux; 470 471 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 472 } 473 474 int 475 fdcmatch_ebus(device_t parent, cfdata_t match, void *aux) 476 { 477 struct ebus_attach_args *ea = aux; 478 479 return strcmp("fdthree", ea->ea_name) == 0; 480 } 481 #endif 482 483 static void 484 establish_chip_type(struct fdc_softc *fdc, 485 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 486 bus_space_handle_t handle) 487 { 488 uint8_t v; 489 490 /* 491 * This hack from Chris Torek: apparently DOR really 492 * addresses MSR/DRS on a 82072. 493 * We used to rely on the VERSION command to tell the 494 * difference (which did not work). 495 */ 496 497 /* First, check the size of the register bank */ 498 if (size < 8) 499 /* It isn't a 82077 */ 500 return; 501 502 #ifdef SUN4 503 /* Then probe the DOR register offset */ 504 if (bus_space_probe(tag, addr, 505 1, /* probe size */ 506 FDREG77_DOR, /* offset */ 507 0, /* flags */ 508 NULL, NULL) == 0) { 509 510 /* It isn't a 82077 */ 511 return; 512 } 513 #endif 514 515 v = bus_space_read_1(tag, handle, FDREG77_DOR); 516 if (v == NE7_RQM) { 517 /* 518 * Value in DOR looks like it's really MSR 519 */ 520 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 521 v = bus_space_read_1(tag, handle, FDREG77_DOR); 522 if (v == NE7_RQM) { 523 /* 524 * The value in the DOR didn't stick; 525 * it isn't a 82077 526 */ 527 return; 528 } 529 } 530 531 fdc->sc_flags |= FDC_82077; 532 } 533 534 /* 535 * Arguments passed between fdcattach and fdprobe. 536 */ 537 struct fdc_attach_args { 538 int fa_drive; 539 struct fd_type *fa_deftype; 540 }; 541 542 /* 543 * Print the location of a disk drive (called just before attaching the 544 * the drive). If `fdc' is not NULL, the drive was found but was not 545 * in the system config file; print the drive name as well. 546 * Return QUIET (config_find ignores this if the device was configured) to 547 * avoid printing `fdN not configured' messages. 548 */ 549 int 550 fdprint(void *aux, const char *fdc) 551 { 552 register struct fdc_attach_args *fa = aux; 553 554 if (!fdc) 555 aprint_normal(" drive %d", fa->fa_drive); 556 return QUIET; 557 } 558 559 /* 560 * Configure several parameters and features on the FDC. 561 * Return 0 on success. 562 */ 563 static int 564 fdconf(struct fdc_softc *fdc) 565 { 566 int vroom; 567 568 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 569 return -1; 570 571 /* 572 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 573 * the PROM thinks is appropriate. 574 */ 575 if ((vroom = fdc->sc_status[7]) == 0) 576 vroom = 0x64; 577 578 /* Configure controller to use FIFO and Implied Seek */ 579 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 580 return -1; 581 if (fdc_wrfifo(fdc, vroom) != 0) 582 return -1; 583 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 584 return -1; 585 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 586 return -1; 587 /* No result phase for the NE7CMD_CFG command */ 588 589 if ((fdc->sc_flags & FDC_82077) != 0) { 590 /* Lock configuration across soft resets. */ 591 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 592 fdcresult(fdc) != 1) { 593 #ifdef DEBUG 594 printf("fdconf: CFGLOCK failed"); 595 #endif 596 return -1; 597 } 598 } 599 600 return 0; 601 #if 0 602 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 603 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 604 if (fdc_debug) 605 printf("[version cmd]"); 606 } 607 #endif 608 } 609 610 #ifdef SUN4 611 void 612 fdcattach_mainbus(device_t parent, device_t self, void *aux) 613 { 614 struct fdc_softc *fdc = device_private(self); 615 struct mainbus_attach_args *ma = aux; 616 617 fdc->sc_dev = self; 618 fdc->sc_bustag = ma->ma_bustag; 619 620 if (bus_space_map( 621 ma->ma_bustag, 622 ma->ma_paddr, 623 ma->ma_size, 624 BUS_SPACE_MAP_LINEAR, 625 &fdc->sc_handle) != 0) { 626 aprint_error_dev(self, "cannot map registers\n"); 627 return; 628 } 629 630 establish_chip_type(fdc, 631 ma->ma_bustag, 632 ma->ma_paddr, 633 ma->ma_size, 634 fdc->sc_handle); 635 636 if (fdcattach(fdc, ma->ma_pri) != 0) 637 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 638 } 639 640 void 641 fdcattach_obio(device_t parent, device_t self, void *aux) 642 { 643 struct fdc_softc *fdc = device_private(self); 644 union obio_attach_args *uoba = aux; 645 struct sbus_attach_args *sa = &uoba->uoba_sbus; 646 647 if (sa->sa_nintr == 0) { 648 printf(": no interrupt line configured\n"); 649 return; 650 } 651 652 fdc->sc_dev = self; 653 fdc->sc_bustag = sa->sa_bustag; 654 655 if (sbus_bus_map(sa->sa_bustag, 656 sa->sa_slot, sa->sa_offset, sa->sa_size, 657 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 658 aprint_error_dev(self, "cannot map control registers\n"); 659 return; 660 } 661 662 establish_chip_type(fdc, 663 sa->sa_bustag, 664 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 665 sa->sa_size, 666 fdc->sc_handle); 667 668 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 669 printf(": no drives attached\n"); 670 return; 671 } 672 673 if (fdcattach(fdc, sa->sa_pri) != 0) 674 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 675 } 676 677 #elif SUN4U 678 679 void 680 fdcattach_sbus(device_t parent, device_t self, void *aux) 681 { 682 struct fdc_softc *fdc = device_private(self); 683 struct sbus_attach_args *sa = aux; 684 685 if (sa->sa_nintr == 0) { 686 printf(": no interrupt line configured\n"); 687 return; 688 } 689 690 if (auxio_fd_control(0) != 0) { 691 printf(": can't attach before auxio\n"); 692 return; 693 } 694 695 fdc->sc_dev = self; 696 fdc->sc_bustag = sa->sa_bustag; 697 698 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 699 sa->sa_size, 0, &fdc->sc_handle) != 0) { 700 printf(": cannot map control registers\n"); 701 return; 702 } 703 704 establish_chip_type(fdc, 705 sa->sa_bustag, 706 BUS_ADDR(sa->sa_slot, sa->sa_offset), 707 sa->sa_size, 708 fdc->sc_handle); 709 710 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 711 printf(": no drives attached\n"); 712 return; 713 } 714 715 if (prom_getproplen(sa->sa_node, "manual") >= 0) 716 fdc->sc_flags |= FDC_NOEJECT; 717 718 719 if (fdcattach(fdc, sa->sa_pri) != 0) 720 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 721 } 722 723 void 724 fdcattach_ebus(device_t parent, device_t self, void *aux) 725 { 726 struct fdc_softc *fdc = device_private(self); 727 struct ebus_attach_args *ea = aux; 728 int map_vaddr; 729 730 if (ea->ea_nintr == 0) { 731 printf(": no interrupt line configured\n"); 732 return; 733 } 734 735 if (ea->ea_nreg < 3) { 736 printf(": expected 3 registers, only got %d\n", 737 ea->ea_nreg); 738 return; 739 } 740 741 fdc->sc_dev = self; 742 fdc->sc_bustag = ea->ea_bustag; 743 744 if (ea->ea_nvaddr > 0) { 745 sparc_promaddr_to_handle(ea->ea_bustag, 746 ea->ea_vaddr[0], &fdc->sc_handle); 747 map_vaddr = 1; 748 } else if (bus_space_map(fdc->sc_bustag, 749 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 750 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 751 map_vaddr = 0; 752 } else { 753 printf(": can't map control registers\n"); 754 return; 755 } 756 757 establish_chip_type(fdc, 758 fdc->sc_bustag, 759 map_vaddr ? ea->ea_vaddr[0] : 760 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 761 ea->ea_reg[0].size, 762 fdc->sc_handle); 763 764 fdc->sc_flags |= FDC_EBUS; 765 766 if (prom_getproplen(ea->ea_node, "manual") >= 0) 767 fdc->sc_flags |= FDC_NOEJECT; 768 769 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 770 if (map_vaddr == 0) 771 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 772 ea->ea_reg[0].size); 773 } 774 #endif 775 776 int 777 fdcattach(struct fdc_softc *fdc, int pri) 778 { 779 struct fdc_attach_args fa; 780 int drive_attached; 781 char code; 782 783 callout_init(&fdc->sc_timo_ch, 0); 784 callout_init(&fdc->sc_intr_ch, 0); 785 786 fdc->sc_state = DEVIDLE; 787 fdc->sc_itask = FDC_ITASK_NONE; 788 fdc->sc_istatus = FDC_ISTATUS_NONE; 789 fdc->sc_flags |= FDC_EIS; 790 TAILQ_INIT(&fdc->sc_drives); 791 792 if ((fdc->sc_flags & FDC_82077) != 0) { 793 fdc->sc_reg_msr = FDREG77_MSR; 794 fdc->sc_reg_fifo = FDREG77_FIFO; 795 fdc->sc_reg_dor = FDREG77_DOR; 796 fdc->sc_reg_dir = FDREG77_DIR; 797 code = '7'; 798 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 799 } else { 800 fdc->sc_reg_msr = FDREG72_MSR; 801 fdc->sc_reg_fifo = FDREG72_FIFO; 802 fdc->sc_reg_dor = 0; 803 code = '2'; 804 } 805 806 /* 807 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 808 * Note: CFG_EFIFO is active-low, initial threshold value: 8 809 */ 810 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 811 if (fdconf(fdc) != 0) { 812 printf(": no drives attached\n"); 813 return -1; 814 } 815 816 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 817 if (fdc->sc_sicookie == NULL) { 818 aprint_normal("\n"); 819 aprint_error_dev(fdc->sc_dev, 820 "cannot register soft interrupt handler\n"); 821 callout_stop(&fdc->sc_timo_ch); 822 callout_stop(&fdc->sc_intr_ch); 823 return -1; 824 } 825 #ifdef SUN4 826 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 827 #elif SUN4U 828 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 829 if (fdc->sc_flags & FDC_NOEJECT) 830 printf(": manual eject"); 831 printf("\n"); 832 #endif 833 834 #ifdef SUN4 835 fdciop = &fdc->sc_io; 836 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 837 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 838 #elif SUN4U 839 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 840 fdc_c_hwintr, fdc) == NULL) { 841 #endif 842 aprint_normal("\n"); 843 aprint_error_dev(fdc->sc_dev, 844 "cannot register interrupt handler\n"); 845 callout_stop(&fdc->sc_timo_ch); 846 callout_stop(&fdc->sc_intr_ch); 847 softint_disestablish(fdc->sc_sicookie); 848 return -1; 849 } 850 851 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 852 device_xname(fdc->sc_dev), "intr"); 853 854 /* physical limit: four drives per controller. */ 855 drive_attached = 0; 856 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 857 fa.fa_deftype = NULL; /* unknown */ 858 fa.fa_deftype = &fd_types[0]; /* XXX */ 859 if (config_found(fdc->sc_dev, (void *)&fa, fdprint, 860 CFARG_EOL) != NULL) 861 drive_attached = 1; 862 } 863 864 if (drive_attached == 0) { 865 /* XXX - dis-establish interrupts here */ 866 /* return -1; */ 867 } 868 869 return 0; 870 } 871 872 int 873 fdmatch(device_t parent, cfdata_t match, void *aux) 874 { 875 struct fdc_softc *fdc = device_private(parent); 876 bus_space_tag_t t = fdc->sc_bustag; 877 bus_space_handle_t h = fdc->sc_handle; 878 struct fdc_attach_args *fa = aux; 879 int drive = fa->fa_drive; 880 int n, ok; 881 882 if (drive > 0) 883 /* XXX - for now, punt on more than one drive */ 884 return 0; 885 886 if ((fdc->sc_flags & FDC_82077) != 0) { 887 /* select drive and turn on motor */ 888 bus_space_write_1(t, h, fdc->sc_reg_dor, 889 drive | FDO_FRST | FDO_MOEN(drive)); 890 /* wait for motor to spin up */ 891 delay(250000); 892 #ifdef SUN4 893 } else { 894 auxregbisc(AUXIO4C_FDS, 0); 895 #endif 896 } 897 fdc->sc_nstat = 0; 898 fdc_wrfifo(fdc, NE7CMD_RECAL); 899 fdc_wrfifo(fdc, drive); 900 901 /* Wait for recalibration to complete */ 902 for (n = 0; n < 10000; n++) { 903 uint8_t v; 904 905 delay(1000); 906 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 907 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 908 /* wait a bit longer till device *really* is ready */ 909 delay(100000); 910 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 911 break; 912 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 913 /* 914 * Got `invalid command'; we interpret it 915 * to mean that the re-calibrate hasn't in 916 * fact finished yet 917 */ 918 continue; 919 break; 920 } 921 } 922 n = fdc->sc_nstat; 923 #ifdef FD_DEBUG 924 if (fdc_debug) { 925 int i; 926 printf("fdprobe: %d stati:", n); 927 for (i = 0; i < n; i++) 928 printf(" 0x%x", fdc->sc_status[i]); 929 printf("\n"); 930 } 931 #endif 932 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 933 934 /* turn off motor */ 935 if ((fdc->sc_flags & FDC_82077) != 0) { 936 /* deselect drive and turn motor off */ 937 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 938 #ifdef SUN4 939 } else { 940 auxregbisc(0, AUXIO4C_FDS); 941 #endif 942 } 943 944 return ok; 945 } 946 947 /* 948 * Controller is working, and drive responded. Attach it. 949 */ 950 void 951 fdattach(device_t parent, device_t self, void *aux) 952 { 953 struct fdc_softc *fdc = device_private(parent); 954 struct fd_softc *fd = device_private(self); 955 struct fdc_attach_args *fa = aux; 956 struct fd_type *type = fa->fa_deftype; 957 int drive = fa->fa_drive; 958 959 fd->sc_dev = self; 960 callout_init(&fd->sc_motoron_ch, 0); 961 callout_init(&fd->sc_motoroff_ch, 0); 962 963 /* XXX Allow `flags' to override device type? */ 964 965 if (type) 966 printf(": %s %d cyl, %d head, %d sec\n", type->name, 967 type->cylinders, type->heads, type->sectrac); 968 else 969 printf(": density unknown\n"); 970 971 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 972 fd->sc_cylin = -1; 973 fd->sc_drive = drive; 974 fd->sc_deftype = type; 975 fdc->sc_fd[drive] = fd; 976 977 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 978 fdc_wrfifo(fdc, type->steprate); 979 /* XXX head load time == 6ms */ 980 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 981 982 /* 983 * Initialize and attach the disk structure. 984 */ 985 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 986 disk_attach(&fd->sc_dk); 987 988 /* 989 * Establish a mountroot_hook anyway in case we booted 990 * with RB_ASKNAME and get selected as the boot device. 991 */ 992 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 993 994 fd_set_geometry(fd); 995 996 /* Make sure the drive motor gets turned off at shutdown time. */ 997 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 998 aprint_error_dev(self, "couldn't establish power handler\n"); 999 } 1000 1001 bool fdshutdown(device_t self, int how) 1002 { 1003 struct fd_softc *fd = device_private(self); 1004 1005 fd_motor_off(fd); 1006 return true; 1007 } 1008 1009 bool fdsuspend(device_t self, const pmf_qual_t *qual) 1010 { 1011 1012 return fdshutdown(self, boothowto); 1013 } 1014 1015 1016 static struct fd_type * 1017 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 1018 { 1019 int type = FDTYPE(dev); 1020 1021 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 1022 return NULL; 1023 return type ? &fd_types[type - 1] : fd->sc_deftype; 1024 } 1025 1026 void 1027 fdstrategy(struct buf *bp) 1028 { 1029 struct fd_softc *fd; 1030 int sz; 1031 int s; 1032 1033 /* Valid unit, controller, and request? */ 1034 fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 1035 if (fd == NULL) { 1036 bp->b_error = EINVAL; 1037 goto done; 1038 } 1039 1040 if (bp->b_blkno < 0 || 1041 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1042 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1043 (bp->b_flags & B_FORMAT) == 0)) { 1044 bp->b_error = EINVAL; 1045 goto done; 1046 } 1047 1048 /* If it's a null transfer, return immediately. */ 1049 if (bp->b_bcount == 0) 1050 goto done; 1051 1052 sz = howmany(bp->b_bcount, DEV_BSIZE); 1053 1054 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1055 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1056 - bp->b_blkno; 1057 if (sz == 0) { 1058 /* If exactly at end of disk, return EOF. */ 1059 bp->b_resid = bp->b_bcount; 1060 goto done; 1061 } 1062 if (sz < 0) { 1063 /* If past end of disk, return EINVAL. */ 1064 bp->b_error = EINVAL; 1065 goto done; 1066 } 1067 /* Otherwise, truncate request. */ 1068 bp->b_bcount = sz << DEV_BSHIFT; 1069 } 1070 1071 bp->b_rawblkno = bp->b_blkno; 1072 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1073 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1074 1075 #ifdef FD_DEBUG 1076 if (fdc_debug > 1) 1077 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1078 (long long)bp->b_blkno, bp->b_bcount, 1079 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1080 #endif 1081 1082 /* Queue transfer on drive, activate drive and controller if idle. */ 1083 s = splbio(); 1084 bufq_put(fd->sc_q, bp); 1085 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1086 if (fd->sc_active == 0) 1087 fdstart(fd); 1088 #ifdef DIAGNOSTIC 1089 else { 1090 struct fdc_softc *fdc = device_private( 1091 device_parent(fd->sc_dev)); 1092 if (fdc->sc_state == DEVIDLE) { 1093 printf("fdstrategy: controller inactive\n"); 1094 fdcstart(fdc); 1095 } 1096 } 1097 #endif 1098 splx(s); 1099 return; 1100 1101 done: 1102 /* Toss transfer; we're done early. */ 1103 biodone(bp); 1104 } 1105 1106 void 1107 fdstart(struct fd_softc *fd) 1108 { 1109 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1110 int active = fdc->sc_drives.tqh_first != 0; 1111 1112 /* Link into controller queue. */ 1113 fd->sc_active = 1; 1114 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1115 1116 /* If controller not already active, start it. */ 1117 if (!active) 1118 fdcstart(fdc); 1119 } 1120 1121 void 1122 fdfinish(struct fd_softc *fd, struct buf *bp) 1123 { 1124 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1125 1126 /* 1127 * Move this drive to the end of the queue to give others a `fair' 1128 * chance. We only force a switch if N operations are completed while 1129 * another drive is waiting to be serviced, since there is a long motor 1130 * startup delay whenever we switch. 1131 */ 1132 (void)bufq_get(fd->sc_q); 1133 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1134 fd->sc_ops = 0; 1135 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1136 if (bufq_peek(fd->sc_q) != NULL) { 1137 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1138 } else 1139 fd->sc_active = 0; 1140 } 1141 bp->b_resid = fd->sc_bcount; 1142 fd->sc_skip = 0; 1143 1144 biodone(bp); 1145 /* turn off motor 5s from now */ 1146 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1147 fdc->sc_state = DEVIDLE; 1148 } 1149 1150 void 1151 fdc_reset(struct fdc_softc *fdc) 1152 { 1153 bus_space_tag_t t = fdc->sc_bustag; 1154 bus_space_handle_t h = fdc->sc_handle; 1155 1156 if ((fdc->sc_flags & FDC_82077) != 0) { 1157 bus_space_write_1(t, h, fdc->sc_reg_dor, 1158 FDO_FDMAEN | FDO_MOEN(0)); 1159 } 1160 1161 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1162 delay(10); 1163 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1164 1165 if ((fdc->sc_flags & FDC_82077) != 0) { 1166 bus_space_write_1(t, h, fdc->sc_reg_dor, 1167 FDO_FRST | FDO_FDMAEN | FDO_DS); 1168 } 1169 #ifdef FD_DEBUG 1170 if (fdc_debug) 1171 printf("fdc reset\n"); 1172 #endif 1173 } 1174 1175 void 1176 fd_set_motor(struct fdc_softc *fdc) 1177 { 1178 struct fd_softc *fd; 1179 u_char status; 1180 int n; 1181 1182 if ((fdc->sc_flags & FDC_82077) != 0) { 1183 status = FDO_FRST | FDO_FDMAEN; 1184 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1185 status |= fd->sc_drive; 1186 1187 for (n = 0; n < 4; n++) 1188 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1189 status |= FDO_MOEN(n); 1190 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1191 fdc->sc_reg_dor, status); 1192 #ifdef SUN4 1193 } else { 1194 1195 for (n = 0; n < 4; n++) { 1196 if ((fd = fdc->sc_fd[n]) != NULL && 1197 (fd->sc_flags & FD_MOTOR) != 0) { 1198 auxregbisc(AUXIO4C_FDS, 0); 1199 return; 1200 } 1201 } 1202 auxregbisc(0, AUXIO4C_FDS); 1203 #endif 1204 } 1205 } 1206 1207 void 1208 fd_motor_off(void *arg) 1209 { 1210 struct fd_softc *fd = arg; 1211 int s; 1212 1213 s = splbio(); 1214 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1215 fd_set_motor(device_private(device_parent(fd->sc_dev))); 1216 splx(s); 1217 } 1218 1219 void 1220 fd_motor_on(void *arg) 1221 { 1222 struct fd_softc *fd = arg; 1223 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1224 int s; 1225 1226 s = splbio(); 1227 fd->sc_flags &= ~FD_MOTOR_WAIT; 1228 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1229 (void)fdcstate(fdc); 1230 splx(s); 1231 } 1232 1233 /* 1234 * Get status bytes off the FDC after a command has finished 1235 * Returns the number of status bytes read; -1 on error. 1236 * The return value is also stored in `sc_nstat'. 1237 */ 1238 int 1239 fdcresult(struct fdc_softc *fdc) 1240 { 1241 bus_space_tag_t t = fdc->sc_bustag; 1242 bus_space_handle_t h = fdc->sc_handle; 1243 int j, n = 0; 1244 1245 for (j = 10000; j; j--) { 1246 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1247 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1248 if (v == NE7_RQM) 1249 return fdc->sc_nstat = n; 1250 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1251 if (n >= sizeof(fdc->sc_status)) { 1252 log(LOG_ERR, "fdcresult: overrun\n"); 1253 return -1; 1254 } 1255 fdc->sc_status[n++] = 1256 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1257 } else 1258 delay(1); 1259 } 1260 1261 log(LOG_ERR, "fdcresult: timeout\n"); 1262 return fdc->sc_nstat = -1; 1263 } 1264 1265 /* 1266 * Write a command byte to the FDC. 1267 * Returns 0 on success; -1 on failure (i.e. timeout) 1268 */ 1269 int 1270 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1271 { 1272 bus_space_tag_t t = fdc->sc_bustag; 1273 bus_space_handle_t h = fdc->sc_handle; 1274 int i; 1275 1276 for (i = 100000; i-- > 0;) { 1277 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1278 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1279 /* The chip is ready */ 1280 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1281 return 0; 1282 } 1283 delay(1); 1284 } 1285 return -1; 1286 } 1287 1288 int 1289 fdc_diskchange(struct fdc_softc *fdc) 1290 { 1291 1292 #ifdef SUN4 1293 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1294 #endif 1295 bus_space_tag_t t = fdc->sc_bustag; 1296 bus_space_handle_t h = fdc->sc_handle; 1297 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1298 return (v & FDI_DCHG) != 0; 1299 #ifdef SUN4 1300 } else if (CPU_ISSUN4C) { 1301 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1302 } 1303 return 0; 1304 #endif 1305 } 1306 1307 int 1308 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1309 { 1310 int pmask; 1311 struct fd_softc *fd; 1312 struct fd_type *type; 1313 1314 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1315 if (fd == NULL) 1316 return ENXIO; 1317 type = fd_dev_to_type(fd, dev); 1318 if (type == NULL) 1319 return ENXIO; 1320 1321 if ((fd->sc_flags & FD_OPEN) != 0 && 1322 fd->sc_type != type) 1323 return EBUSY; 1324 1325 fd->sc_type = type; 1326 fd->sc_cylin = -1; 1327 fd->sc_flags |= FD_OPEN; 1328 1329 /* 1330 * Only update the disklabel if we're not open anywhere else. 1331 */ 1332 if (fd->sc_dk.dk_openmask == 0) 1333 fdgetdisklabel(dev); 1334 1335 pmask = (1 << DISKPART(dev)); 1336 1337 switch (fmt) { 1338 case S_IFCHR: 1339 fd->sc_dk.dk_copenmask |= pmask; 1340 break; 1341 1342 case S_IFBLK: 1343 fd->sc_dk.dk_bopenmask |= pmask; 1344 break; 1345 } 1346 fd->sc_dk.dk_openmask = 1347 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1348 1349 return 0; 1350 } 1351 1352 int 1353 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1354 { 1355 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1356 int pmask = (1 << DISKPART(dev)); 1357 1358 fd->sc_flags &= ~FD_OPEN; 1359 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1360 1361 switch (fmt) { 1362 case S_IFCHR: 1363 fd->sc_dk.dk_copenmask &= ~pmask; 1364 break; 1365 1366 case S_IFBLK: 1367 fd->sc_dk.dk_bopenmask &= ~pmask; 1368 break; 1369 } 1370 fd->sc_dk.dk_openmask = 1371 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1372 1373 return 0; 1374 } 1375 1376 int 1377 fdread(dev_t dev, struct uio *uio, int flag) 1378 { 1379 1380 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1381 } 1382 1383 int 1384 fdwrite(dev_t dev, struct uio *uio, int flag) 1385 { 1386 1387 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1388 } 1389 1390 void 1391 fdcstart(struct fdc_softc *fdc) 1392 { 1393 1394 #ifdef DIAGNOSTIC 1395 /* only got here if controller's drive queue was inactive; should 1396 be in idle state */ 1397 if (fdc->sc_state != DEVIDLE) { 1398 printf("fdcstart: not idle\n"); 1399 return; 1400 } 1401 #endif 1402 (void)fdcstate(fdc); 1403 } 1404 1405 static void 1406 fdcpstatus(struct fdc_softc *fdc) 1407 { 1408 char bits[64]; 1409 1410 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1411 printf(" (st0 %s", bits); 1412 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1413 printf(" st1 %s", bits); 1414 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1415 printf(" st2 %s", bits); 1416 printf(" cyl %d head %d sec %d)\n", 1417 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1418 } 1419 1420 void 1421 fdcstatus(struct fdc_softc *fdc, const char *s) 1422 { 1423 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1424 int n; 1425 char bits[64]; 1426 1427 /* Just print last status */ 1428 n = fdc->sc_nstat; 1429 1430 #if 0 1431 /* 1432 * A 82072 seems to return <invalid command> on 1433 * gratuitous Sense Interrupt commands. 1434 */ 1435 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1436 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1437 (void)fdcresult(fdc); 1438 n = 2; 1439 } 1440 #endif 1441 1442 printf("%s: %s: state %d", 1443 fd ? device_xname(fd->sc_dev) : "fdc", s, fdc->sc_state); 1444 1445 switch (n) { 1446 case 0: 1447 printf("\n"); 1448 break; 1449 case 2: 1450 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1451 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1452 break; 1453 case 7: 1454 fdcpstatus(fdc); 1455 break; 1456 #ifdef DIAGNOSTIC 1457 default: 1458 printf(" fdcstatus: weird size: %d\n", n); 1459 break; 1460 #endif 1461 } 1462 } 1463 1464 void 1465 fdctimeout(void *arg) 1466 { 1467 struct fdc_softc *fdc = arg; 1468 struct fd_softc *fd; 1469 int s; 1470 1471 s = splbio(); 1472 fd = fdc->sc_drives.tqh_first; 1473 if (fd == NULL) { 1474 aprint_error_dev(fdc->sc_dev, "timeout but no I/O pending: state %d, istatus=%d\n", 1475 fdc->sc_state, fdc->sc_istatus); 1476 fdc->sc_state = DEVIDLE; 1477 goto out; 1478 } 1479 1480 if (bufq_peek(fd->sc_q) != NULL) 1481 fdc->sc_state++; 1482 else 1483 fdc->sc_state = DEVIDLE; 1484 1485 (void)fdcstate(fdc); 1486 out: 1487 splx(s); 1488 1489 } 1490 1491 void 1492 fdcpseudointr(void *arg) 1493 { 1494 struct fdc_softc *fdc = arg; 1495 int s; 1496 1497 /* Just ensure it has the right spl. */ 1498 s = splbio(); 1499 (void)fdcstate(fdc); 1500 splx(s); 1501 } 1502 1503 1504 /* 1505 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1506 * handler is available. Unfortunately, we have no reliable way to 1507 * determine that the interrupt really came from the floppy controller; 1508 * just hope that the other devices that share this interrupt level 1509 * can do better.. 1510 */ 1511 int 1512 fdc_c_hwintr(void *arg) 1513 { 1514 struct fdc_softc *fdc = arg; 1515 bus_space_tag_t t = fdc->sc_bustag; 1516 bus_space_handle_t h = fdc->sc_handle; 1517 1518 switch (fdc->sc_itask) { 1519 case FDC_ITASK_NONE: 1520 return 0; 1521 case FDC_ITASK_SENSEI: 1522 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1523 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1524 else 1525 fdc->sc_istatus = FDC_ISTATUS_DONE; 1526 softint_schedule(fdc->sc_sicookie); 1527 return 1; 1528 case FDC_ITASK_RESULT: 1529 if (fdcresult(fdc) == -1) 1530 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1531 else 1532 fdc->sc_istatus = FDC_ISTATUS_DONE; 1533 softint_schedule(fdc->sc_sicookie); 1534 return 1; 1535 case FDC_ITASK_DMA: 1536 /* Proceed with pseudo-DMA below */ 1537 break; 1538 default: 1539 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1540 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1541 softint_schedule(fdc->sc_sicookie); 1542 return 1; 1543 } 1544 1545 /* 1546 * Pseudo DMA in progress 1547 */ 1548 for (;;) { 1549 uint8_t msr; 1550 1551 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1552 1553 if ((msr & NE7_RQM) == 0) 1554 /* That's all this round. */ 1555 break; 1556 1557 if ((msr & NE7_NDM) == 0) { 1558 /* Execution phase finished, get result. */ 1559 fdcresult(fdc); 1560 fdc->sc_istatus = FDC_ISTATUS_DONE; 1561 softint_schedule(fdc->sc_sicookie); 1562 break; 1563 } 1564 1565 if (fdc->sc_tc == 0) 1566 /* For some reason the controller wants to transfer 1567 more data then what we want to transfer. */ 1568 panic("fdc: overrun"); 1569 1570 /* Another byte can be transferred */ 1571 if ((msr & NE7_DIO) != 0) 1572 *fdc->sc_data = 1573 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1574 else 1575 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1576 *fdc->sc_data); 1577 1578 fdc->sc_data++; 1579 if (--fdc->sc_tc == 0) { 1580 FTC_FLIP; 1581 break; 1582 } 1583 } 1584 return 1; 1585 } 1586 1587 void 1588 fdcswintr(void *arg) 1589 { 1590 struct fdc_softc *fdc = arg; 1591 1592 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1593 /* This (software) interrupt is not for us */ 1594 return; 1595 1596 switch (fdc->sc_istatus) { 1597 case FDC_ISTATUS_ERROR: 1598 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1599 break; 1600 case FDC_ISTATUS_SPURIOUS: 1601 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1602 break; 1603 } 1604 1605 fdcstate(fdc); 1606 return; 1607 } 1608 1609 int 1610 fdcstate(struct fdc_softc *fdc) 1611 { 1612 1613 #define st0 fdc->sc_status[0] 1614 #define st1 fdc->sc_status[1] 1615 #define cyl fdc->sc_status[1] 1616 #define FDC_WRFIFO(fdc, c) do { \ 1617 if (fdc_wrfifo(fdc, (c))) { \ 1618 goto xxx; \ 1619 } \ 1620 } while(0) 1621 1622 struct fd_softc *fd; 1623 struct buf *bp; 1624 int read, head, sec, nblks; 1625 struct fd_type *type; 1626 struct ne7_fd_formb *finfo = NULL; 1627 1628 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1629 /* Prevent loop if the reset sequence produces errors */ 1630 if (fdc->sc_state != RESETCOMPLETE && 1631 fdc->sc_state != RECALWAIT && 1632 fdc->sc_state != RECALCOMPLETE) 1633 fdc->sc_state = DORESET; 1634 } 1635 1636 /* Clear I task/status field */ 1637 fdc->sc_istatus = FDC_ISTATUS_NONE; 1638 fdc->sc_itask = FDC_ITASK_NONE; 1639 1640 loop: 1641 /* Is there a drive for the controller to do a transfer with? */ 1642 fd = fdc->sc_drives.tqh_first; 1643 if (fd == NULL) { 1644 fdc->sc_state = DEVIDLE; 1645 return 0; 1646 } 1647 1648 /* Is there a transfer to this drive? If not, deactivate drive. */ 1649 bp = bufq_peek(fd->sc_q); 1650 if (bp == NULL) { 1651 fd->sc_ops = 0; 1652 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1653 fd->sc_active = 0; 1654 goto loop; 1655 } 1656 1657 if (bp->b_flags & B_FORMAT) 1658 finfo = (struct ne7_fd_formb *)bp->b_data; 1659 1660 switch (fdc->sc_state) { 1661 case DEVIDLE: 1662 fdc->sc_errors = 0; 1663 fd->sc_skip = 0; 1664 fd->sc_bcount = bp->b_bcount; 1665 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1666 callout_stop(&fd->sc_motoroff_ch); 1667 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1668 fdc->sc_state = MOTORWAIT; 1669 return 1; 1670 } 1671 if ((fd->sc_flags & FD_MOTOR) == 0) { 1672 /* Turn on the motor, being careful about pairing. */ 1673 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1674 if (ofd && ofd->sc_flags & FD_MOTOR) { 1675 callout_stop(&ofd->sc_motoroff_ch); 1676 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1677 } 1678 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1679 fd_set_motor(fdc); 1680 fdc->sc_state = MOTORWAIT; 1681 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1682 /* Allow .25s for motor to stabilize. */ 1683 callout_reset(&fd->sc_motoron_ch, hz / 4, 1684 fd_motor_on, fd); 1685 } else { 1686 fd->sc_flags &= ~FD_MOTOR_WAIT; 1687 goto loop; 1688 } 1689 return 1; 1690 } 1691 /* Make sure the right drive is selected. */ 1692 fd_set_motor(fdc); 1693 1694 if (fdc_diskchange(fdc)) 1695 goto dodskchg; 1696 1697 /*FALLTHROUGH*/ 1698 case DOSEEK: 1699 doseek: 1700 if ((fdc->sc_flags & FDC_EIS) && 1701 (bp->b_flags & B_FORMAT) == 0) { 1702 fd->sc_cylin = bp->b_cylinder; 1703 /* We use implied seek */ 1704 goto doio; 1705 } 1706 1707 if (fd->sc_cylin == bp->b_cylinder) 1708 goto doio; 1709 1710 fd->sc_cylin = -1; 1711 fdc->sc_state = SEEKWAIT; 1712 fdc->sc_nstat = 0; 1713 1714 iostat_seek(fd->sc_dk.dk_stats); 1715 1716 disk_busy(&fd->sc_dk); 1717 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1718 1719 /* specify command */ 1720 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1721 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1722 /* XXX head load time == 6ms */ 1723 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1724 1725 fdc->sc_itask = FDC_ITASK_SENSEI; 1726 /* seek function */ 1727 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1728 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1729 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1730 return 1; 1731 1732 case DODSKCHG: 1733 dodskchg: 1734 /* 1735 * Disk change: force a seek operation by going to cyl 1 1736 * followed by a recalibrate. 1737 */ 1738 disk_busy(&fd->sc_dk); 1739 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1740 fd->sc_cylin = -1; 1741 fdc->sc_nstat = 0; 1742 fdc->sc_state = DSKCHGWAIT; 1743 1744 fdc->sc_itask = FDC_ITASK_SENSEI; 1745 /* seek function */ 1746 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1747 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1748 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1749 return 1; 1750 1751 case DSKCHGWAIT: 1752 callout_stop(&fdc->sc_timo_ch); 1753 disk_unbusy(&fd->sc_dk, 0, 0); 1754 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1755 cyl != 1 * fd->sc_type->step) { 1756 fdcstatus(fdc, "dskchg seek failed"); 1757 fdc->sc_state = DORESET; 1758 } else 1759 fdc->sc_state = DORECAL; 1760 1761 if (fdc_diskchange(fdc)) { 1762 aprint_error_dev(fdc->sc_dev, 1763 "cannot clear disk change status\n"); 1764 fdc->sc_state = DORESET; 1765 } 1766 goto loop; 1767 1768 case DOIO: 1769 doio: 1770 if (finfo != NULL) 1771 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1772 (char *)finfo; 1773 type = fd->sc_type; 1774 sec = fd->sc_blkno % type->seccyl; 1775 nblks = type->seccyl - sec; 1776 nblks = uimin(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1777 nblks = uimin(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1778 fd->sc_nblks = nblks; 1779 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1780 head = sec / type->sectrac; 1781 sec -= head * type->sectrac; 1782 #ifdef DIAGNOSTIC 1783 {int block; 1784 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1785 sec; 1786 if (block != fd->sc_blkno) { 1787 printf("fdcintr: block %d != blkno %d\n", block, 1788 (int)fd->sc_blkno); 1789 #ifdef DDB 1790 Debugger(); 1791 #endif 1792 }} 1793 #endif 1794 read = bp->b_flags & B_READ; 1795 1796 /* Setup for pseudo DMA */ 1797 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1798 fdc->sc_tc = fd->sc_nbytes; 1799 1800 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1801 fdc->sc_reg_drs, type->rate); 1802 #ifdef FD_DEBUG 1803 if (fdc_debug > 1) 1804 printf("fdcstate: doio: %s drive %d " 1805 "track %d head %d sec %d nblks %d\n", 1806 finfo ? "format" : 1807 (read ? "read" : "write"), 1808 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1809 #endif 1810 fdc->sc_state = IOCOMPLETE; 1811 fdc->sc_itask = FDC_ITASK_DMA; 1812 fdc->sc_nstat = 0; 1813 1814 disk_busy(&fd->sc_dk); 1815 1816 /* allow 3 seconds for operation */ 1817 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1818 1819 if (finfo != NULL) { 1820 /* formatting */ 1821 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1822 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1823 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1824 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1825 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1826 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1827 } else { 1828 if (read) 1829 FDC_WRFIFO(fdc, NE7CMD_READ); 1830 else 1831 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1832 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1833 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1834 FDC_WRFIFO(fdc, head); 1835 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1836 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1837 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1838 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1839 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1840 } 1841 1842 return 1; /* will return later */ 1843 1844 case SEEKWAIT: 1845 callout_stop(&fdc->sc_timo_ch); 1846 fdc->sc_state = SEEKCOMPLETE; 1847 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1848 /* allow 1/50 second for heads to settle */ 1849 callout_reset(&fdc->sc_intr_ch, hz / 50, 1850 fdcpseudointr, fdc); 1851 return 1; /* will return later */ 1852 } 1853 /*FALLTHROUGH*/ 1854 case SEEKCOMPLETE: 1855 /* no data on seek */ 1856 disk_unbusy(&fd->sc_dk, 0, 0); 1857 1858 /* Make sure seek really happened. */ 1859 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1860 cyl != bp->b_cylinder * fd->sc_type->step) { 1861 #ifdef FD_DEBUG 1862 if (fdc_debug) 1863 fdcstatus(fdc, "seek failed"); 1864 #endif 1865 fdcretry(fdc); 1866 goto loop; 1867 } 1868 fd->sc_cylin = bp->b_cylinder; 1869 goto doio; 1870 1871 case IOTIMEDOUT: 1872 /* 1873 * Try to abort the I/O operation without resetting 1874 * the chip first. Poke TC and arrange to pick up 1875 * the timed out I/O command's status. 1876 */ 1877 fdc->sc_itask = FDC_ITASK_RESULT; 1878 fdc->sc_state = IOCLEANUPWAIT; 1879 fdc->sc_nstat = 0; 1880 /* 1/10 second should be enough */ 1881 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1882 FTC_FLIP; 1883 return 1; 1884 1885 case IOCLEANUPTIMEDOUT: 1886 case SEEKTIMEDOUT: 1887 case RECALTIMEDOUT: 1888 case RESETTIMEDOUT: 1889 case DSKCHGTIMEDOUT: 1890 fdcstatus(fdc, "timeout"); 1891 1892 /* All other timeouts always roll through to a chip reset */ 1893 fdcretry(fdc); 1894 1895 /* Force reset, no matter what fdcretry() says */ 1896 fdc->sc_state = DORESET; 1897 goto loop; 1898 1899 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1900 callout_stop(&fdc->sc_timo_ch); 1901 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1902 (bp->b_flags & B_READ)); 1903 fdcretry(fdc); 1904 goto loop; 1905 1906 case IOCOMPLETE: /* IO DONE, post-analyze */ 1907 callout_stop(&fdc->sc_timo_ch); 1908 1909 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1910 (bp->b_flags & B_READ)); 1911 1912 if (fdc->sc_nstat != 7 || st1 != 0 || 1913 ((st0 & 0xf8) != 0 && 1914 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1915 #ifdef FD_DEBUG 1916 if (fdc_debug) { 1917 fdcstatus(fdc, bp->b_flags & B_READ ? 1918 "read failed" : "write failed"); 1919 printf("blkno %lld nblks %d nstat %d tc %d\n", 1920 (long long)fd->sc_blkno, fd->sc_nblks, 1921 fdc->sc_nstat, fdc->sc_tc); 1922 } 1923 #endif 1924 if (fdc->sc_nstat == 7 && 1925 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1926 1927 /* 1928 * Silently retry overruns if no other 1929 * error bit is set. Adjust threshold. 1930 */ 1931 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1932 if (thr < 15) { 1933 thr++; 1934 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1935 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1936 #ifdef FD_DEBUG 1937 if (fdc_debug) 1938 printf("fdc: %d -> threshold\n", 1939 thr); 1940 #endif 1941 fdconf(fdc); 1942 fdc->sc_overruns = 0; 1943 } 1944 if (++fdc->sc_overruns < 3) { 1945 fdc->sc_state = DOIO; 1946 goto loop; 1947 } 1948 } 1949 fdcretry(fdc); 1950 goto loop; 1951 } 1952 if (fdc->sc_errors) { 1953 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1954 fd->sc_skip / FD_BSIZE(fd), 1955 (struct disklabel *)NULL); 1956 printf("\n"); 1957 fdc->sc_errors = 0; 1958 } else { 1959 if (--fdc->sc_overruns < -20) { 1960 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1961 if (thr > 0) { 1962 thr--; 1963 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1964 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1965 #ifdef FD_DEBUG 1966 if (fdc_debug) 1967 printf("fdc: %d -> threshold\n", 1968 thr); 1969 #endif 1970 fdconf(fdc); 1971 } 1972 fdc->sc_overruns = 0; 1973 } 1974 } 1975 fd->sc_blkno += fd->sc_nblks; 1976 fd->sc_skip += fd->sc_nbytes; 1977 fd->sc_bcount -= fd->sc_nbytes; 1978 if (finfo == NULL && fd->sc_bcount > 0) { 1979 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1980 goto doseek; 1981 } 1982 fdfinish(fd, bp); 1983 goto loop; 1984 1985 case DORESET: 1986 /* try a reset, keep motor on */ 1987 fd_set_motor(fdc); 1988 delay(100); 1989 fdc->sc_nstat = 0; 1990 fdc->sc_itask = FDC_ITASK_SENSEI; 1991 fdc->sc_state = RESETCOMPLETE; 1992 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1993 fdc_reset(fdc); 1994 return 1; /* will return later */ 1995 1996 case RESETCOMPLETE: 1997 callout_stop(&fdc->sc_timo_ch); 1998 fdconf(fdc); 1999 2000 /* FALLTHROUGH */ 2001 case DORECAL: 2002 fdc->sc_state = RECALWAIT; 2003 fdc->sc_itask = FDC_ITASK_SENSEI; 2004 fdc->sc_nstat = 0; 2005 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 2006 /* recalibrate function */ 2007 FDC_WRFIFO(fdc, NE7CMD_RECAL); 2008 FDC_WRFIFO(fdc, fd->sc_drive); 2009 return 1; /* will return later */ 2010 2011 case RECALWAIT: 2012 callout_stop(&fdc->sc_timo_ch); 2013 fdc->sc_state = RECALCOMPLETE; 2014 if ((fdc->sc_flags & FDC_NEEDHEADSETTLE) != 0) { 2015 /* allow 1/30 second for heads to settle */ 2016 callout_reset(&fdc->sc_intr_ch, hz / 30, 2017 fdcpseudointr, fdc); 2018 return 1; /* will return later */ 2019 } 2020 /* FALLTHROUGH */ 2021 2022 case RECALCOMPLETE: 2023 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 2024 #ifdef FD_DEBUG 2025 if (fdc_debug) 2026 fdcstatus(fdc, "recalibrate failed"); 2027 #endif 2028 fdcretry(fdc); 2029 goto loop; 2030 } 2031 fd->sc_cylin = 0; 2032 goto doseek; 2033 2034 case MOTORWAIT: 2035 if (fd->sc_flags & FD_MOTOR_WAIT) 2036 return 1; /* time's not up yet */ 2037 goto doseek; 2038 2039 default: 2040 fdcstatus(fdc, "stray interrupt"); 2041 return 1; 2042 } 2043 #ifdef DIAGNOSTIC 2044 panic("fdcintr: impossible"); 2045 #endif 2046 2047 xxx: 2048 /* 2049 * We get here if the chip locks up in FDC_WRFIFO() 2050 * Cancel any operation and schedule a reset 2051 */ 2052 callout_stop(&fdc->sc_timo_ch); 2053 fdcretry(fdc); 2054 fdc->sc_state = DORESET; 2055 goto loop; 2056 2057 #undef st0 2058 #undef st1 2059 #undef cyl 2060 } 2061 2062 void 2063 fdcretry(struct fdc_softc *fdc) 2064 { 2065 struct fd_softc *fd; 2066 struct buf *bp; 2067 int error = EIO; 2068 2069 fd = fdc->sc_drives.tqh_first; 2070 bp = bufq_peek(fd->sc_q); 2071 2072 fdc->sc_overruns = 0; 2073 if (fd->sc_opts & FDOPT_NORETRY) 2074 goto fail; 2075 2076 switch (fdc->sc_errors) { 2077 case 0: 2078 if (fdc->sc_nstat == 7 && 2079 (fdc->sc_status[0] & 0xd8) == 0x40 && 2080 (fdc->sc_status[1] & 0x2) == 0x2) { 2081 aprint_error_dev(fdc->sc_dev, "read-only medium\n"); 2082 error = EROFS; 2083 goto failsilent; 2084 } 2085 /* try again */ 2086 fdc->sc_state = 2087 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2088 break; 2089 2090 case 1: case 2: case 3: 2091 /* didn't work; try recalibrating */ 2092 fdc->sc_state = DORECAL; 2093 break; 2094 2095 case 4: 2096 if (fdc->sc_nstat == 7 && 2097 fdc->sc_status[0] == 0 && 2098 fdc->sc_status[1] == 0 && 2099 fdc->sc_status[2] == 0) { 2100 /* 2101 * We've retried a few times and we've got 2102 * valid status and all three status bytes 2103 * are zero. Assume this condition is the 2104 * result of no disk loaded into the drive. 2105 */ 2106 aprint_error_dev(fdc->sc_dev, "no medium?\n"); 2107 error = ENODEV; 2108 goto failsilent; 2109 } 2110 2111 /* still no go; reset the bastard */ 2112 fdc->sc_state = DORESET; 2113 break; 2114 2115 default: 2116 fail: 2117 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2118 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2119 fd->sc_skip / FD_BSIZE(fd), 2120 (struct disklabel *)NULL); 2121 printf("\n"); 2122 fdcstatus(fdc, "controller status"); 2123 } 2124 2125 failsilent: 2126 bp->b_error = error; 2127 fdfinish(fd, bp); 2128 } 2129 fdc->sc_errors++; 2130 } 2131 2132 int 2133 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2134 { 2135 struct fd_softc *fd; 2136 struct fdc_softc *fdc; 2137 struct fdformat_parms *form_parms; 2138 struct fdformat_cmd *form_cmd; 2139 struct ne7_fd_formb *fd_formb; 2140 int il[FD_MAX_NSEC + 1]; 2141 int unit; 2142 int i, j; 2143 int error; 2144 2145 unit = FDUNIT(dev); 2146 if (unit >= fd_cd.cd_ndevs) 2147 return ENXIO; 2148 2149 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2150 fdc = device_private(device_parent(fd->sc_dev)); 2151 2152 switch (cmd) { 2153 case DIOCGDINFO: 2154 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2155 return 0; 2156 2157 case DIOCWLABEL: 2158 if ((flag & FWRITE) == 0) 2159 return EBADF; 2160 /* XXX do something */ 2161 return 0; 2162 2163 case DIOCWDINFO: 2164 if ((flag & FWRITE) == 0) 2165 return EBADF; 2166 2167 error = setdisklabel(fd->sc_dk.dk_label, 2168 (struct disklabel *)addr, 0, 2169 fd->sc_dk.dk_cpulabel); 2170 if (error) 2171 return error; 2172 2173 error = writedisklabel(dev, fdstrategy, 2174 fd->sc_dk.dk_label, 2175 fd->sc_dk.dk_cpulabel); 2176 return error; 2177 2178 case DIOCLOCK: 2179 /* 2180 * Nothing to do here, really. 2181 */ 2182 return 0; 2183 2184 case DIOCEJECT: 2185 if (*(int *)addr == 0) { 2186 int part = DISKPART(dev); 2187 /* 2188 * Don't force eject: check that we are the only 2189 * partition open. If so, unlock it. 2190 */ 2191 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2192 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2193 fd->sc_dk.dk_openmask) { 2194 return EBUSY; 2195 } 2196 } 2197 /* FALLTHROUGH */ 2198 case ODIOCEJECT: 2199 if (fdc->sc_flags & FDC_NOEJECT) 2200 return EINVAL; 2201 fd_do_eject(fd); 2202 return 0; 2203 2204 case FDIOCGETFORMAT: 2205 form_parms = (struct fdformat_parms *)addr; 2206 form_parms->fdformat_version = FDFORMAT_VERSION; 2207 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2208 form_parms->ncyl = fd->sc_type->cylinders; 2209 form_parms->nspt = fd->sc_type->sectrac; 2210 form_parms->ntrk = fd->sc_type->heads; 2211 form_parms->stepspercyl = fd->sc_type->step; 2212 form_parms->gaplen = fd->sc_type->gap2; 2213 form_parms->fillbyte = fd->sc_type->fillbyte; 2214 form_parms->interleave = fd->sc_type->interleave; 2215 switch (fd->sc_type->rate) { 2216 case FDC_500KBPS: 2217 form_parms->xfer_rate = 500 * 1024; 2218 break; 2219 case FDC_300KBPS: 2220 form_parms->xfer_rate = 300 * 1024; 2221 break; 2222 case FDC_250KBPS: 2223 form_parms->xfer_rate = 250 * 1024; 2224 break; 2225 default: 2226 return EINVAL; 2227 } 2228 return 0; 2229 2230 case FDIOCSETFORMAT: 2231 if ((flag & FWRITE) == 0) 2232 return EBADF; /* must be opened for writing */ 2233 2234 form_parms = (struct fdformat_parms *)addr; 2235 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2236 return EINVAL;/* wrong version of formatting prog */ 2237 2238 i = form_parms->nbps >> 7; 2239 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2240 i & ~(1 << (ffs(i)-1))) 2241 /* not a power-of-two multiple of 128 */ 2242 return EINVAL; 2243 2244 switch (form_parms->xfer_rate) { 2245 case 500 * 1024: 2246 fd->sc_type->rate = FDC_500KBPS; 2247 break; 2248 case 300 * 1024: 2249 fd->sc_type->rate = FDC_300KBPS; 2250 break; 2251 case 250 * 1024: 2252 fd->sc_type->rate = FDC_250KBPS; 2253 break; 2254 default: 2255 return EINVAL; 2256 } 2257 2258 if (form_parms->nspt > FD_MAX_NSEC || 2259 form_parms->fillbyte > 0xff || 2260 form_parms->interleave > 0xff) 2261 return EINVAL; 2262 fd->sc_type->sectrac = form_parms->nspt; 2263 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2264 return EINVAL; 2265 fd->sc_type->heads = form_parms->ntrk; 2266 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2267 fd->sc_type->secsize = ffs(i)-1; 2268 fd->sc_type->gap2 = form_parms->gaplen; 2269 fd->sc_type->cylinders = form_parms->ncyl; 2270 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2271 form_parms->nbps / DEV_BSIZE; 2272 fd->sc_type->step = form_parms->stepspercyl; 2273 fd->sc_type->fillbyte = form_parms->fillbyte; 2274 fd->sc_type->interleave = form_parms->interleave; 2275 return 0; 2276 2277 case FDIOCFORMAT_TRACK: 2278 if((flag & FWRITE) == 0) 2279 /* must be opened for writing */ 2280 return EBADF; 2281 form_cmd = (struct fdformat_cmd *)addr; 2282 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2283 /* wrong version of formatting prog */ 2284 return EINVAL; 2285 2286 if (form_cmd->head >= fd->sc_type->heads || 2287 form_cmd->cylinder >= fd->sc_type->cylinders) { 2288 return EINVAL; 2289 } 2290 2291 fd_formb = kmem_alloc(sizeof(*fd_formb), KM_SLEEP); 2292 fd_formb->head = form_cmd->head; 2293 fd_formb->cyl = form_cmd->cylinder; 2294 fd_formb->transfer_rate = fd->sc_type->rate; 2295 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2296 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2297 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2298 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2299 2300 memset(il, 0, sizeof il); 2301 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2302 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2303 j++; 2304 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2305 j += fd->sc_type->interleave; 2306 } 2307 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2308 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2309 fd_formb->fd_formb_headno(i) = form_cmd->head; 2310 fd_formb->fd_formb_secno(i) = il[i + 1]; 2311 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2312 } 2313 2314 error = fdformat(dev, fd_formb, l->l_proc); 2315 kmem_free(fd_formb, sizeof(*fd_formb)); 2316 return error; 2317 2318 case FDIOCGETOPTS: /* get drive options */ 2319 *(int *)addr = fd->sc_opts; 2320 return 0; 2321 2322 case FDIOCSETOPTS: /* set drive options */ 2323 fd->sc_opts = *(int *)addr; 2324 return 0; 2325 2326 #ifdef FD_DEBUG 2327 case _IO('f', 100): 2328 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2329 fdcresult(fdc); 2330 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2331 for (i = 0; i < fdc->sc_nstat; i++) 2332 printf(" 0x%x", fdc->sc_status[i]); 2333 printf(">\n"); 2334 return 0; 2335 2336 case _IOW('f', 101, int): 2337 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2338 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2339 fdconf(fdc); 2340 return 0; 2341 2342 case _IO('f', 102): 2343 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2344 fdcresult(fdc); 2345 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2346 for (i=0; i< fdc->sc_nstat; i++) 2347 printf(" 0x%x", fdc->sc_status[i]); 2348 printf(">\n"); 2349 return 0; 2350 #endif 2351 default: 2352 return ENOTTY; 2353 } 2354 2355 #ifdef DIAGNOSTIC 2356 panic("fdioctl: impossible"); 2357 #endif 2358 } 2359 2360 int 2361 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2362 { 2363 int rv = 0; 2364 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2365 struct fd_type *type = fd->sc_type; 2366 struct buf *bp; 2367 2368 /* set up a buffer header for fdstrategy() */ 2369 bp = getiobuf(NULL, false); 2370 if (bp == NULL) 2371 return ENOBUFS; 2372 2373 bp->b_vp = NULL; 2374 bp->b_cflags = BC_BUSY; 2375 bp->b_flags = B_PHYS | B_FORMAT; 2376 bp->b_proc = p; 2377 bp->b_dev = dev; 2378 2379 /* 2380 * Calculate a fake blkno, so fdstrategy() would initiate a 2381 * seek to the requested cylinder. 2382 */ 2383 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2384 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2385 / DEV_BSIZE; 2386 2387 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2388 bp->b_data = (void *)finfo; 2389 2390 #ifdef FD_DEBUG 2391 if (fdc_debug) { 2392 int i; 2393 2394 printf("fdformat: blkno 0x%llx count %d\n", 2395 (unsigned long long)bp->b_blkno, bp->b_bcount); 2396 2397 printf("\tcyl:\t%d\n", finfo->cyl); 2398 printf("\thead:\t%d\n", finfo->head); 2399 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2400 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2401 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2402 printf("\ttrack data:"); 2403 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2404 printf(" [c%d h%d s%d]", 2405 finfo->fd_formb_cylno(i), 2406 finfo->fd_formb_headno(i), 2407 finfo->fd_formb_secno(i) ); 2408 if (finfo->fd_formb_secsize(i) != 2) 2409 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2410 } 2411 printf("\n"); 2412 } 2413 #endif 2414 2415 /* now do the format */ 2416 fdstrategy(bp); 2417 2418 /* ...and wait for it to complete */ 2419 rv = biowait(bp); 2420 putiobuf(bp); 2421 return rv; 2422 } 2423 2424 void 2425 fdgetdisklabel(dev_t dev) 2426 { 2427 int i; 2428 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2429 struct disklabel *lp = fd->sc_dk.dk_label; 2430 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2431 2432 memset(lp, 0, sizeof(struct disklabel)); 2433 memset(clp, 0, sizeof(struct cpu_disklabel)); 2434 2435 lp->d_type = DKTYPE_FLOPPY; 2436 lp->d_secsize = FD_BSIZE(fd); 2437 lp->d_secpercyl = fd->sc_type->seccyl; 2438 lp->d_nsectors = fd->sc_type->sectrac; 2439 lp->d_ncylinders = fd->sc_type->cylinders; 2440 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2441 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2442 lp->d_rpm = 300; /* XXX like it matters... */ 2443 2444 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2445 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2446 lp->d_interleave = 1; 2447 lp->d_flags = D_REMOVABLE; 2448 2449 lp->d_partitions[RAW_PART].p_offset = 0; 2450 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2451 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2452 lp->d_npartitions = RAW_PART + 1; 2453 2454 lp->d_magic = DISKMAGIC; 2455 lp->d_magic2 = DISKMAGIC; 2456 lp->d_checksum = dkcksum(lp); 2457 2458 /* 2459 * Call the generic disklabel extraction routine. If there's 2460 * not a label there, fake it. 2461 */ 2462 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2463 strncpy(lp->d_packname, "default label", 2464 sizeof(lp->d_packname)); 2465 /* 2466 * Reset the partition info; it might have gotten 2467 * trashed in readdisklabel(). 2468 * 2469 * XXX Why do we have to do this? readdisklabel() 2470 * should be safe... 2471 */ 2472 for (i = 0; i < MAXPARTITIONS; ++i) { 2473 lp->d_partitions[i].p_offset = 0; 2474 if (i == RAW_PART) { 2475 lp->d_partitions[i].p_size = 2476 lp->d_secpercyl * lp->d_ncylinders; 2477 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2478 } else { 2479 lp->d_partitions[i].p_size = 0; 2480 lp->d_partitions[i].p_fstype = FS_UNUSED; 2481 } 2482 } 2483 lp->d_npartitions = RAW_PART + 1; 2484 } 2485 } 2486 2487 void 2488 fd_do_eject(struct fd_softc *fd) 2489 { 2490 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 2491 2492 #ifdef SUN4 2493 if (CPU_ISSUN4C) { 2494 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2495 delay(10); 2496 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2497 return; 2498 } 2499 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2500 #endif 2501 bus_space_tag_t t = fdc->sc_bustag; 2502 bus_space_handle_t h = fdc->sc_handle; 2503 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2504 2505 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2506 delay(10); 2507 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2508 return; 2509 #ifdef SUN4 2510 } 2511 #endif 2512 } 2513 2514 /* ARGSUSED */ 2515 void 2516 fd_mountroot_hook(device_t dev) 2517 { 2518 int c; 2519 2520 fd_do_eject((struct fd_softc *)dev); 2521 printf("Insert filesystem floppy and press return."); 2522 for (;;) { 2523 c = cngetc(); 2524 if ((c == '\r') || (c == '\n')) { 2525 printf("\n"); 2526 break; 2527 } 2528 } 2529 } 2530 2531 #ifdef MEMORY_DISK_HOOKS 2532 2533 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2534 2535 int 2536 fd_read_md_image(size_t *sizep, void **addrp) 2537 { 2538 struct buf buf, *bp = &buf; 2539 dev_t dev; 2540 off_t offset; 2541 char *addr; 2542 2543 dev = makedev(54,0); /* XXX */ 2544 2545 addr = kmem_alloc(FDMICROROOTSIZE, KM_SLEEP); 2546 *addrp = addr; 2547 2548 if (fdopen(dev, 0, S_IFCHR, NULL)) 2549 panic("fd: mountroot: fdopen"); 2550 2551 offset = 0; 2552 2553 for (;;) { 2554 bp->b_dev = dev; 2555 bp->b_error = 0; 2556 bp->b_resid = 0; 2557 bp->b_proc = NULL; 2558 bp->b_cflags = BC_BUSY; 2559 bp->b_flags = B_PHYS | B_RAW | B_READ; 2560 bp->b_blkno = btodb(offset); 2561 bp->b_bcount = DEV_BSIZE; 2562 bp->b_data = addr; 2563 fdstrategy(bp); 2564 biowait(bp); 2565 if (bp->b_error) 2566 panic("fd: mountroot: fdread error %d", bp->b_error); 2567 2568 if (bp->b_resid != 0) 2569 break; 2570 2571 addr += DEV_BSIZE; 2572 offset += DEV_BSIZE; 2573 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2574 break; 2575 } 2576 (void)fdclose(dev, 0, S_IFCHR, NULL); 2577 *sizep = offset; 2578 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2579 return 0; 2580 } 2581 #endif /* MEMORY_DISK_HOOKS */ 2582 2583 static void 2584 fd_set_geometry(struct fd_softc *fd) 2585 { 2586 const struct fd_type *fdt; 2587 2588 fdt = fd->sc_type; 2589 if (fdt == NULL) { 2590 fdt = fd->sc_deftype; 2591 if (fdt == NULL) 2592 return; 2593 } 2594 2595 struct disk_geom *dg = &fd->sc_dk.dk_geom; 2596 2597 memset(dg, 0, sizeof(*dg)); 2598 dg->dg_secperunit = fdt->size; 2599 dg->dg_nsectors = fdt->sectrac; 2600 switch (fdt->secsize) { 2601 case 2: 2602 dg->dg_secsize = 512; 2603 break; 2604 case 3: 2605 dg->dg_secsize = 1024; 2606 break; 2607 default: 2608 break; 2609 } 2610 dg->dg_ntracks = fdt->heads; 2611 dg->dg_ncylinders = fdt->cylinders; 2612 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 2613 } 2614