fdc.c revision 1.44
1 /* $NetBSD: fdc.c,v 1.44 2015/04/26 15:15:19 mlelstv 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 1.44 2015/04/26 15:15:19 mlelstv 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/malloc.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 inline 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) != NULL) 860 drive_attached = 1; 861 } 862 863 if (drive_attached == 0) { 864 /* XXX - dis-establish interrupts here */ 865 /* return -1; */ 866 } 867 868 return 0; 869 } 870 871 int 872 fdmatch(device_t parent, cfdata_t match, void *aux) 873 { 874 struct fdc_softc *fdc = device_private(parent); 875 bus_space_tag_t t = fdc->sc_bustag; 876 bus_space_handle_t h = fdc->sc_handle; 877 struct fdc_attach_args *fa = aux; 878 int drive = fa->fa_drive; 879 int n, ok; 880 881 if (drive > 0) 882 /* XXX - for now, punt on more than one drive */ 883 return 0; 884 885 if ((fdc->sc_flags & FDC_82077) != 0) { 886 /* select drive and turn on motor */ 887 bus_space_write_1(t, h, fdc->sc_reg_dor, 888 drive | FDO_FRST | FDO_MOEN(drive)); 889 /* wait for motor to spin up */ 890 delay(250000); 891 #ifdef SUN4 892 } else { 893 auxregbisc(AUXIO4C_FDS, 0); 894 #endif 895 } 896 fdc->sc_nstat = 0; 897 fdc_wrfifo(fdc, NE7CMD_RECAL); 898 fdc_wrfifo(fdc, drive); 899 900 /* Wait for recalibration to complete */ 901 for (n = 0; n < 10000; n++) { 902 uint8_t v; 903 904 delay(1000); 905 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 906 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 907 /* wait a bit longer till device *really* is ready */ 908 delay(100000); 909 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 910 break; 911 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 912 /* 913 * Got `invalid command'; we interpret it 914 * to mean that the re-calibrate hasn't in 915 * fact finished yet 916 */ 917 continue; 918 break; 919 } 920 } 921 n = fdc->sc_nstat; 922 #ifdef FD_DEBUG 923 if (fdc_debug) { 924 int i; 925 printf("fdprobe: %d stati:", n); 926 for (i = 0; i < n; i++) 927 printf(" 0x%x", fdc->sc_status[i]); 928 printf("\n"); 929 } 930 #endif 931 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 932 933 /* turn off motor */ 934 if ((fdc->sc_flags & FDC_82077) != 0) { 935 /* deselect drive and turn motor off */ 936 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 937 #ifdef SUN4 938 } else { 939 auxregbisc(0, AUXIO4C_FDS); 940 #endif 941 } 942 943 return ok; 944 } 945 946 /* 947 * Controller is working, and drive responded. Attach it. 948 */ 949 void 950 fdattach(device_t parent, device_t self, void *aux) 951 { 952 struct fdc_softc *fdc = device_private(parent); 953 struct fd_softc *fd = device_private(self); 954 struct fdc_attach_args *fa = aux; 955 struct fd_type *type = fa->fa_deftype; 956 int drive = fa->fa_drive; 957 958 fd->sc_dev = self; 959 callout_init(&fd->sc_motoron_ch, 0); 960 callout_init(&fd->sc_motoroff_ch, 0); 961 962 /* XXX Allow `flags' to override device type? */ 963 964 if (type) 965 printf(": %s %d cyl, %d head, %d sec\n", type->name, 966 type->cylinders, type->heads, type->sectrac); 967 else 968 printf(": density unknown\n"); 969 970 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 971 fd->sc_cylin = -1; 972 fd->sc_drive = drive; 973 fd->sc_deftype = type; 974 fdc->sc_fd[drive] = fd; 975 976 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 977 fdc_wrfifo(fdc, type->steprate); 978 /* XXX head load time == 6ms */ 979 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 980 981 /* 982 * Initialize and attach the disk structure. 983 */ 984 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 985 disk_attach(&fd->sc_dk); 986 987 /* 988 * Establish a mountroot_hook anyway in case we booted 989 * with RB_ASKNAME and get selected as the boot device. 990 */ 991 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 992 993 fd_set_geometry(fd); 994 995 /* Make sure the drive motor gets turned off at shutdown time. */ 996 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 997 aprint_error_dev(self, "couldn't establish power handler\n"); 998 } 999 1000 bool fdshutdown(device_t self, int how) 1001 { 1002 struct fd_softc *fd = device_private(self); 1003 1004 fd_motor_off(fd); 1005 return true; 1006 } 1007 1008 bool fdsuspend(device_t self, const pmf_qual_t *qual) 1009 { 1010 1011 return fdshutdown(self, boothowto); 1012 } 1013 1014 1015 static inline struct fd_type * 1016 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 1017 { 1018 int type = FDTYPE(dev); 1019 1020 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 1021 return NULL; 1022 return type ? &fd_types[type - 1] : fd->sc_deftype; 1023 } 1024 1025 void 1026 fdstrategy(struct buf *bp) 1027 { 1028 struct fd_softc *fd; 1029 int sz; 1030 int s; 1031 1032 /* Valid unit, controller, and request? */ 1033 fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 1034 if (fd == NULL) { 1035 bp->b_error = EINVAL; 1036 goto done; 1037 } 1038 1039 if (bp->b_blkno < 0 || 1040 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1041 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1042 (bp->b_flags & B_FORMAT) == 0)) { 1043 bp->b_error = EINVAL; 1044 goto done; 1045 } 1046 1047 /* If it's a null transfer, return immediately. */ 1048 if (bp->b_bcount == 0) 1049 goto done; 1050 1051 sz = howmany(bp->b_bcount, DEV_BSIZE); 1052 1053 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1054 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1055 - bp->b_blkno; 1056 if (sz == 0) { 1057 /* If exactly at end of disk, return EOF. */ 1058 bp->b_resid = bp->b_bcount; 1059 goto done; 1060 } 1061 if (sz < 0) { 1062 /* If past end of disk, return EINVAL. */ 1063 bp->b_error = EINVAL; 1064 goto done; 1065 } 1066 /* Otherwise, truncate request. */ 1067 bp->b_bcount = sz << DEV_BSHIFT; 1068 } 1069 1070 bp->b_rawblkno = bp->b_blkno; 1071 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1072 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1073 1074 #ifdef FD_DEBUG 1075 if (fdc_debug > 1) 1076 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1077 (long long)bp->b_blkno, bp->b_bcount, 1078 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1079 #endif 1080 1081 /* Queue transfer on drive, activate drive and controller if idle. */ 1082 s = splbio(); 1083 bufq_put(fd->sc_q, bp); 1084 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1085 if (fd->sc_active == 0) 1086 fdstart(fd); 1087 #ifdef DIAGNOSTIC 1088 else { 1089 struct fdc_softc *fdc = device_private( 1090 device_parent(fd->sc_dev)); 1091 if (fdc->sc_state == DEVIDLE) { 1092 printf("fdstrategy: controller inactive\n"); 1093 fdcstart(fdc); 1094 } 1095 } 1096 #endif 1097 splx(s); 1098 return; 1099 1100 done: 1101 /* Toss transfer; we're done early. */ 1102 biodone(bp); 1103 } 1104 1105 void 1106 fdstart(struct fd_softc *fd) 1107 { 1108 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1109 int active = fdc->sc_drives.tqh_first != 0; 1110 1111 /* Link into controller queue. */ 1112 fd->sc_active = 1; 1113 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1114 1115 /* If controller not already active, start it. */ 1116 if (!active) 1117 fdcstart(fdc); 1118 } 1119 1120 void 1121 fdfinish(struct fd_softc *fd, struct buf *bp) 1122 { 1123 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1124 1125 /* 1126 * Move this drive to the end of the queue to give others a `fair' 1127 * chance. We only force a switch if N operations are completed while 1128 * another drive is waiting to be serviced, since there is a long motor 1129 * startup delay whenever we switch. 1130 */ 1131 (void)bufq_get(fd->sc_q); 1132 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1133 fd->sc_ops = 0; 1134 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1135 if (bufq_peek(fd->sc_q) != NULL) { 1136 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1137 } else 1138 fd->sc_active = 0; 1139 } 1140 bp->b_resid = fd->sc_bcount; 1141 fd->sc_skip = 0; 1142 1143 biodone(bp); 1144 /* turn off motor 5s from now */ 1145 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1146 fdc->sc_state = DEVIDLE; 1147 } 1148 1149 void 1150 fdc_reset(struct fdc_softc *fdc) 1151 { 1152 bus_space_tag_t t = fdc->sc_bustag; 1153 bus_space_handle_t h = fdc->sc_handle; 1154 1155 if ((fdc->sc_flags & FDC_82077) != 0) { 1156 bus_space_write_1(t, h, fdc->sc_reg_dor, 1157 FDO_FDMAEN | FDO_MOEN(0)); 1158 } 1159 1160 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1161 delay(10); 1162 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1163 1164 if ((fdc->sc_flags & FDC_82077) != 0) { 1165 bus_space_write_1(t, h, fdc->sc_reg_dor, 1166 FDO_FRST | FDO_FDMAEN | FDO_DS); 1167 } 1168 #ifdef FD_DEBUG 1169 if (fdc_debug) 1170 printf("fdc reset\n"); 1171 #endif 1172 } 1173 1174 void 1175 fd_set_motor(struct fdc_softc *fdc) 1176 { 1177 struct fd_softc *fd; 1178 u_char status; 1179 int n; 1180 1181 if ((fdc->sc_flags & FDC_82077) != 0) { 1182 status = FDO_FRST | FDO_FDMAEN; 1183 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1184 status |= fd->sc_drive; 1185 1186 for (n = 0; n < 4; n++) 1187 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1188 status |= FDO_MOEN(n); 1189 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1190 fdc->sc_reg_dor, status); 1191 #ifdef SUN4 1192 } else { 1193 1194 for (n = 0; n < 4; n++) { 1195 if ((fd = fdc->sc_fd[n]) != NULL && 1196 (fd->sc_flags & FD_MOTOR) != 0) { 1197 auxregbisc(AUXIO4C_FDS, 0); 1198 return; 1199 } 1200 } 1201 auxregbisc(0, AUXIO4C_FDS); 1202 #endif 1203 } 1204 } 1205 1206 void 1207 fd_motor_off(void *arg) 1208 { 1209 struct fd_softc *fd = arg; 1210 int s; 1211 1212 s = splbio(); 1213 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1214 fd_set_motor(device_private(device_parent(fd->sc_dev))); 1215 splx(s); 1216 } 1217 1218 void 1219 fd_motor_on(void *arg) 1220 { 1221 struct fd_softc *fd = arg; 1222 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1223 int s; 1224 1225 s = splbio(); 1226 fd->sc_flags &= ~FD_MOTOR_WAIT; 1227 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1228 (void)fdcstate(fdc); 1229 splx(s); 1230 } 1231 1232 /* 1233 * Get status bytes off the FDC after a command has finished 1234 * Returns the number of status bytes read; -1 on error. 1235 * The return value is also stored in `sc_nstat'. 1236 */ 1237 int 1238 fdcresult(struct fdc_softc *fdc) 1239 { 1240 bus_space_tag_t t = fdc->sc_bustag; 1241 bus_space_handle_t h = fdc->sc_handle; 1242 int j, n = 0; 1243 1244 for (j = 10000; j; j--) { 1245 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1246 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1247 if (v == NE7_RQM) 1248 return fdc->sc_nstat = n; 1249 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1250 if (n >= sizeof(fdc->sc_status)) { 1251 log(LOG_ERR, "fdcresult: overrun\n"); 1252 return -1; 1253 } 1254 fdc->sc_status[n++] = 1255 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1256 } else 1257 delay(1); 1258 } 1259 1260 log(LOG_ERR, "fdcresult: timeout\n"); 1261 return fdc->sc_nstat = -1; 1262 } 1263 1264 /* 1265 * Write a command byte to the FDC. 1266 * Returns 0 on success; -1 on failure (i.e. timeout) 1267 */ 1268 int 1269 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1270 { 1271 bus_space_tag_t t = fdc->sc_bustag; 1272 bus_space_handle_t h = fdc->sc_handle; 1273 int i; 1274 1275 for (i = 100000; i-- > 0;) { 1276 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1277 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1278 /* The chip is ready */ 1279 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1280 return 0; 1281 } 1282 delay(1); 1283 } 1284 return -1; 1285 } 1286 1287 int 1288 fdc_diskchange(struct fdc_softc *fdc) 1289 { 1290 1291 #ifdef SUN4 1292 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1293 #endif 1294 bus_space_tag_t t = fdc->sc_bustag; 1295 bus_space_handle_t h = fdc->sc_handle; 1296 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1297 return (v & FDI_DCHG) != 0; 1298 #ifdef SUN4 1299 } else if (CPU_ISSUN4C) { 1300 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1301 } 1302 return 0; 1303 #endif 1304 } 1305 1306 int 1307 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1308 { 1309 int pmask; 1310 struct fd_softc *fd; 1311 struct fd_type *type; 1312 1313 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1314 if (fd == NULL) 1315 return ENXIO; 1316 type = fd_dev_to_type(fd, dev); 1317 if (type == NULL) 1318 return ENXIO; 1319 1320 if ((fd->sc_flags & FD_OPEN) != 0 && 1321 fd->sc_type != type) 1322 return EBUSY; 1323 1324 fd->sc_type = type; 1325 fd->sc_cylin = -1; 1326 fd->sc_flags |= FD_OPEN; 1327 1328 /* 1329 * Only update the disklabel if we're not open anywhere else. 1330 */ 1331 if (fd->sc_dk.dk_openmask == 0) 1332 fdgetdisklabel(dev); 1333 1334 pmask = (1 << DISKPART(dev)); 1335 1336 switch (fmt) { 1337 case S_IFCHR: 1338 fd->sc_dk.dk_copenmask |= pmask; 1339 break; 1340 1341 case S_IFBLK: 1342 fd->sc_dk.dk_bopenmask |= pmask; 1343 break; 1344 } 1345 fd->sc_dk.dk_openmask = 1346 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1347 1348 return 0; 1349 } 1350 1351 int 1352 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1353 { 1354 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1355 int pmask = (1 << DISKPART(dev)); 1356 1357 fd->sc_flags &= ~FD_OPEN; 1358 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1359 1360 switch (fmt) { 1361 case S_IFCHR: 1362 fd->sc_dk.dk_copenmask &= ~pmask; 1363 break; 1364 1365 case S_IFBLK: 1366 fd->sc_dk.dk_bopenmask &= ~pmask; 1367 break; 1368 } 1369 fd->sc_dk.dk_openmask = 1370 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1371 1372 return 0; 1373 } 1374 1375 int 1376 fdread(dev_t dev, struct uio *uio, int flag) 1377 { 1378 1379 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1380 } 1381 1382 int 1383 fdwrite(dev_t dev, struct uio *uio, int flag) 1384 { 1385 1386 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1387 } 1388 1389 void 1390 fdcstart(struct fdc_softc *fdc) 1391 { 1392 1393 #ifdef DIAGNOSTIC 1394 /* only got here if controller's drive queue was inactive; should 1395 be in idle state */ 1396 if (fdc->sc_state != DEVIDLE) { 1397 printf("fdcstart: not idle\n"); 1398 return; 1399 } 1400 #endif 1401 (void)fdcstate(fdc); 1402 } 1403 1404 static void 1405 fdcpstatus(struct fdc_softc *fdc) 1406 { 1407 char bits[64]; 1408 1409 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1410 printf(" (st0 %s", bits); 1411 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1412 printf(" st1 %s", bits); 1413 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1414 printf(" st2 %s", bits); 1415 printf(" cyl %d head %d sec %d)\n", 1416 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1417 } 1418 1419 void 1420 fdcstatus(struct fdc_softc *fdc, const char *s) 1421 { 1422 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1423 int n; 1424 char bits[64]; 1425 1426 /* Just print last status */ 1427 n = fdc->sc_nstat; 1428 1429 #if 0 1430 /* 1431 * A 82072 seems to return <invalid command> on 1432 * gratuitous Sense Interrupt commands. 1433 */ 1434 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1435 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1436 (void)fdcresult(fdc); 1437 n = 2; 1438 } 1439 #endif 1440 1441 printf("%s: %s: state %d", 1442 fd ? device_xname(fd->sc_dev) : "fdc", s, fdc->sc_state); 1443 1444 switch (n) { 1445 case 0: 1446 printf("\n"); 1447 break; 1448 case 2: 1449 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1450 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1451 break; 1452 case 7: 1453 fdcpstatus(fdc); 1454 break; 1455 #ifdef DIAGNOSTIC 1456 default: 1457 printf(" fdcstatus: weird size: %d\n", n); 1458 break; 1459 #endif 1460 } 1461 } 1462 1463 void 1464 fdctimeout(void *arg) 1465 { 1466 struct fdc_softc *fdc = arg; 1467 struct fd_softc *fd; 1468 int s; 1469 1470 s = splbio(); 1471 fd = fdc->sc_drives.tqh_first; 1472 if (fd == NULL) { 1473 aprint_error_dev(fdc->sc_dev, "timeout but no I/O pending: state %d, istatus=%d\n", 1474 fdc->sc_state, fdc->sc_istatus); 1475 fdc->sc_state = DEVIDLE; 1476 goto out; 1477 } 1478 1479 if (bufq_peek(fd->sc_q) != NULL) 1480 fdc->sc_state++; 1481 else 1482 fdc->sc_state = DEVIDLE; 1483 1484 (void)fdcstate(fdc); 1485 out: 1486 splx(s); 1487 1488 } 1489 1490 void 1491 fdcpseudointr(void *arg) 1492 { 1493 struct fdc_softc *fdc = arg; 1494 int s; 1495 1496 /* Just ensure it has the right spl. */ 1497 s = splbio(); 1498 (void)fdcstate(fdc); 1499 splx(s); 1500 } 1501 1502 1503 /* 1504 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1505 * handler is available. Unfortunately, we have no reliable way to 1506 * determine that the interrupt really came from the floppy controller; 1507 * just hope that the other devices that share this interrupt level 1508 * can do better.. 1509 */ 1510 int 1511 fdc_c_hwintr(void *arg) 1512 { 1513 struct fdc_softc *fdc = arg; 1514 bus_space_tag_t t = fdc->sc_bustag; 1515 bus_space_handle_t h = fdc->sc_handle; 1516 1517 switch (fdc->sc_itask) { 1518 case FDC_ITASK_NONE: 1519 return 0; 1520 case FDC_ITASK_SENSEI: 1521 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1522 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1523 else 1524 fdc->sc_istatus = FDC_ISTATUS_DONE; 1525 softint_schedule(fdc->sc_sicookie); 1526 return 1; 1527 case FDC_ITASK_RESULT: 1528 if (fdcresult(fdc) == -1) 1529 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1530 else 1531 fdc->sc_istatus = FDC_ISTATUS_DONE; 1532 softint_schedule(fdc->sc_sicookie); 1533 return 1; 1534 case FDC_ITASK_DMA: 1535 /* Proceed with pseudo-DMA below */ 1536 break; 1537 default: 1538 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1539 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1540 softint_schedule(fdc->sc_sicookie); 1541 return 1; 1542 } 1543 1544 /* 1545 * Pseudo DMA in progress 1546 */ 1547 for (;;) { 1548 uint8_t msr; 1549 1550 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1551 1552 if ((msr & NE7_RQM) == 0) 1553 /* That's all this round. */ 1554 break; 1555 1556 if ((msr & NE7_NDM) == 0) { 1557 /* Execution phase finished, get result. */ 1558 fdcresult(fdc); 1559 fdc->sc_istatus = FDC_ISTATUS_DONE; 1560 softint_schedule(fdc->sc_sicookie); 1561 break; 1562 } 1563 1564 if (fdc->sc_tc == 0) 1565 /* For some reason the controller wants to transfer 1566 more data then what we want to transfer. */ 1567 panic("fdc: overrun"); 1568 1569 /* Another byte can be transferred */ 1570 if ((msr & NE7_DIO) != 0) 1571 *fdc->sc_data = 1572 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1573 else 1574 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1575 *fdc->sc_data); 1576 1577 fdc->sc_data++; 1578 if (--fdc->sc_tc == 0) { 1579 FTC_FLIP; 1580 break; 1581 } 1582 } 1583 return 1; 1584 } 1585 1586 void 1587 fdcswintr(void *arg) 1588 { 1589 struct fdc_softc *fdc = arg; 1590 1591 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1592 /* This (software) interrupt is not for us */ 1593 return; 1594 1595 switch (fdc->sc_istatus) { 1596 case FDC_ISTATUS_ERROR: 1597 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1598 break; 1599 case FDC_ISTATUS_SPURIOUS: 1600 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1601 break; 1602 } 1603 1604 fdcstate(fdc); 1605 return; 1606 } 1607 1608 int 1609 fdcstate(struct fdc_softc *fdc) 1610 { 1611 1612 #define st0 fdc->sc_status[0] 1613 #define st1 fdc->sc_status[1] 1614 #define cyl fdc->sc_status[1] 1615 #define FDC_WRFIFO(fdc, c) do { \ 1616 if (fdc_wrfifo(fdc, (c))) { \ 1617 goto xxx; \ 1618 } \ 1619 } while(0) 1620 1621 struct fd_softc *fd; 1622 struct buf *bp; 1623 int read, head, sec, nblks; 1624 struct fd_type *type; 1625 struct ne7_fd_formb *finfo = NULL; 1626 1627 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1628 /* Prevent loop if the reset sequence produces errors */ 1629 if (fdc->sc_state != RESETCOMPLETE && 1630 fdc->sc_state != RECALWAIT && 1631 fdc->sc_state != RECALCOMPLETE) 1632 fdc->sc_state = DORESET; 1633 } 1634 1635 /* Clear I task/status field */ 1636 fdc->sc_istatus = FDC_ISTATUS_NONE; 1637 fdc->sc_itask = FDC_ITASK_NONE; 1638 1639 loop: 1640 /* Is there a drive for the controller to do a transfer with? */ 1641 fd = fdc->sc_drives.tqh_first; 1642 if (fd == NULL) { 1643 fdc->sc_state = DEVIDLE; 1644 return 0; 1645 } 1646 1647 /* Is there a transfer to this drive? If not, deactivate drive. */ 1648 bp = bufq_peek(fd->sc_q); 1649 if (bp == NULL) { 1650 fd->sc_ops = 0; 1651 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1652 fd->sc_active = 0; 1653 goto loop; 1654 } 1655 1656 if (bp->b_flags & B_FORMAT) 1657 finfo = (struct ne7_fd_formb *)bp->b_data; 1658 1659 switch (fdc->sc_state) { 1660 case DEVIDLE: 1661 fdc->sc_errors = 0; 1662 fd->sc_skip = 0; 1663 fd->sc_bcount = bp->b_bcount; 1664 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1665 callout_stop(&fd->sc_motoroff_ch); 1666 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1667 fdc->sc_state = MOTORWAIT; 1668 return 1; 1669 } 1670 if ((fd->sc_flags & FD_MOTOR) == 0) { 1671 /* Turn on the motor, being careful about pairing. */ 1672 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1673 if (ofd && ofd->sc_flags & FD_MOTOR) { 1674 callout_stop(&ofd->sc_motoroff_ch); 1675 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1676 } 1677 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1678 fd_set_motor(fdc); 1679 fdc->sc_state = MOTORWAIT; 1680 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1681 /* Allow .25s for motor to stabilize. */ 1682 callout_reset(&fd->sc_motoron_ch, hz / 4, 1683 fd_motor_on, fd); 1684 } else { 1685 fd->sc_flags &= ~FD_MOTOR_WAIT; 1686 goto loop; 1687 } 1688 return 1; 1689 } 1690 /* Make sure the right drive is selected. */ 1691 fd_set_motor(fdc); 1692 1693 if (fdc_diskchange(fdc)) 1694 goto dodskchg; 1695 1696 /*FALLTHROUGH*/ 1697 case DOSEEK: 1698 doseek: 1699 if ((fdc->sc_flags & FDC_EIS) && 1700 (bp->b_flags & B_FORMAT) == 0) { 1701 fd->sc_cylin = bp->b_cylinder; 1702 /* We use implied seek */ 1703 goto doio; 1704 } 1705 1706 if (fd->sc_cylin == bp->b_cylinder) 1707 goto doio; 1708 1709 fd->sc_cylin = -1; 1710 fdc->sc_state = SEEKWAIT; 1711 fdc->sc_nstat = 0; 1712 1713 iostat_seek(fd->sc_dk.dk_stats); 1714 1715 disk_busy(&fd->sc_dk); 1716 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1717 1718 /* specify command */ 1719 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1720 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1721 /* XXX head load time == 6ms */ 1722 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1723 1724 fdc->sc_itask = FDC_ITASK_SENSEI; 1725 /* seek function */ 1726 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1727 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1728 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1729 return 1; 1730 1731 case DODSKCHG: 1732 dodskchg: 1733 /* 1734 * Disk change: force a seek operation by going to cyl 1 1735 * followed by a recalibrate. 1736 */ 1737 disk_busy(&fd->sc_dk); 1738 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1739 fd->sc_cylin = -1; 1740 fdc->sc_nstat = 0; 1741 fdc->sc_state = DSKCHGWAIT; 1742 1743 fdc->sc_itask = FDC_ITASK_SENSEI; 1744 /* seek function */ 1745 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1746 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1747 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1748 return 1; 1749 1750 case DSKCHGWAIT: 1751 callout_stop(&fdc->sc_timo_ch); 1752 disk_unbusy(&fd->sc_dk, 0, 0); 1753 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1754 cyl != 1 * fd->sc_type->step) { 1755 fdcstatus(fdc, "dskchg seek failed"); 1756 fdc->sc_state = DORESET; 1757 } else 1758 fdc->sc_state = DORECAL; 1759 1760 if (fdc_diskchange(fdc)) { 1761 aprint_error_dev(fdc->sc_dev, 1762 "cannot clear disk change status\n"); 1763 fdc->sc_state = DORESET; 1764 } 1765 goto loop; 1766 1767 case DOIO: 1768 doio: 1769 if (finfo != NULL) 1770 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1771 (char *)finfo; 1772 type = fd->sc_type; 1773 sec = fd->sc_blkno % type->seccyl; 1774 nblks = type->seccyl - sec; 1775 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1776 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1777 fd->sc_nblks = nblks; 1778 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1779 head = sec / type->sectrac; 1780 sec -= head * type->sectrac; 1781 #ifdef DIAGNOSTIC 1782 {int block; 1783 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1784 sec; 1785 if (block != fd->sc_blkno) { 1786 printf("fdcintr: block %d != blkno %d\n", block, 1787 (int)fd->sc_blkno); 1788 #ifdef DDB 1789 Debugger(); 1790 #endif 1791 }} 1792 #endif 1793 read = bp->b_flags & B_READ; 1794 1795 /* Setup for pseudo DMA */ 1796 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1797 fdc->sc_tc = fd->sc_nbytes; 1798 1799 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1800 fdc->sc_reg_drs, type->rate); 1801 #ifdef FD_DEBUG 1802 if (fdc_debug > 1) 1803 printf("fdcstate: doio: %s drive %d " 1804 "track %d head %d sec %d nblks %d\n", 1805 finfo ? "format" : 1806 (read ? "read" : "write"), 1807 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1808 #endif 1809 fdc->sc_state = IOCOMPLETE; 1810 fdc->sc_itask = FDC_ITASK_DMA; 1811 fdc->sc_nstat = 0; 1812 1813 disk_busy(&fd->sc_dk); 1814 1815 /* allow 3 seconds for operation */ 1816 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1817 1818 if (finfo != NULL) { 1819 /* formatting */ 1820 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1821 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1822 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1823 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1824 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1825 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1826 } else { 1827 if (read) 1828 FDC_WRFIFO(fdc, NE7CMD_READ); 1829 else 1830 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1831 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1832 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1833 FDC_WRFIFO(fdc, head); 1834 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1835 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1836 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1837 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1838 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1839 } 1840 1841 return 1; /* will return later */ 1842 1843 case SEEKWAIT: 1844 callout_stop(&fdc->sc_timo_ch); 1845 fdc->sc_state = SEEKCOMPLETE; 1846 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1847 /* allow 1/50 second for heads to settle */ 1848 callout_reset(&fdc->sc_intr_ch, hz / 50, 1849 fdcpseudointr, fdc); 1850 return 1; /* will return later */ 1851 } 1852 /*FALLTHROUGH*/ 1853 case SEEKCOMPLETE: 1854 /* no data on seek */ 1855 disk_unbusy(&fd->sc_dk, 0, 0); 1856 1857 /* Make sure seek really happened. */ 1858 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1859 cyl != bp->b_cylinder * fd->sc_type->step) { 1860 #ifdef FD_DEBUG 1861 if (fdc_debug) 1862 fdcstatus(fdc, "seek failed"); 1863 #endif 1864 fdcretry(fdc); 1865 goto loop; 1866 } 1867 fd->sc_cylin = bp->b_cylinder; 1868 goto doio; 1869 1870 case IOTIMEDOUT: 1871 /* 1872 * Try to abort the I/O operation without resetting 1873 * the chip first. Poke TC and arrange to pick up 1874 * the timed out I/O command's status. 1875 */ 1876 fdc->sc_itask = FDC_ITASK_RESULT; 1877 fdc->sc_state = IOCLEANUPWAIT; 1878 fdc->sc_nstat = 0; 1879 /* 1/10 second should be enough */ 1880 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1881 FTC_FLIP; 1882 return 1; 1883 1884 case IOCLEANUPTIMEDOUT: 1885 case SEEKTIMEDOUT: 1886 case RECALTIMEDOUT: 1887 case RESETTIMEDOUT: 1888 case DSKCHGTIMEDOUT: 1889 fdcstatus(fdc, "timeout"); 1890 1891 /* All other timeouts always roll through to a chip reset */ 1892 fdcretry(fdc); 1893 1894 /* Force reset, no matter what fdcretry() says */ 1895 fdc->sc_state = DORESET; 1896 goto loop; 1897 1898 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1899 callout_stop(&fdc->sc_timo_ch); 1900 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1901 (bp->b_flags & B_READ)); 1902 fdcretry(fdc); 1903 goto loop; 1904 1905 case IOCOMPLETE: /* IO DONE, post-analyze */ 1906 callout_stop(&fdc->sc_timo_ch); 1907 1908 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1909 (bp->b_flags & B_READ)); 1910 1911 if (fdc->sc_nstat != 7 || st1 != 0 || 1912 ((st0 & 0xf8) != 0 && 1913 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1914 #ifdef FD_DEBUG 1915 if (fdc_debug) { 1916 fdcstatus(fdc, bp->b_flags & B_READ ? 1917 "read failed" : "write failed"); 1918 printf("blkno %lld nblks %d nstat %d tc %d\n", 1919 (long long)fd->sc_blkno, fd->sc_nblks, 1920 fdc->sc_nstat, fdc->sc_tc); 1921 } 1922 #endif 1923 if (fdc->sc_nstat == 7 && 1924 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1925 1926 /* 1927 * Silently retry overruns if no other 1928 * error bit is set. Adjust threshold. 1929 */ 1930 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1931 if (thr < 15) { 1932 thr++; 1933 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1934 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1935 #ifdef FD_DEBUG 1936 if (fdc_debug) 1937 printf("fdc: %d -> threshold\n", 1938 thr); 1939 #endif 1940 fdconf(fdc); 1941 fdc->sc_overruns = 0; 1942 } 1943 if (++fdc->sc_overruns < 3) { 1944 fdc->sc_state = DOIO; 1945 goto loop; 1946 } 1947 } 1948 fdcretry(fdc); 1949 goto loop; 1950 } 1951 if (fdc->sc_errors) { 1952 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1953 fd->sc_skip / FD_BSIZE(fd), 1954 (struct disklabel *)NULL); 1955 printf("\n"); 1956 fdc->sc_errors = 0; 1957 } else { 1958 if (--fdc->sc_overruns < -20) { 1959 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1960 if (thr > 0) { 1961 thr--; 1962 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1963 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1964 #ifdef FD_DEBUG 1965 if (fdc_debug) 1966 printf("fdc: %d -> threshold\n", 1967 thr); 1968 #endif 1969 fdconf(fdc); 1970 } 1971 fdc->sc_overruns = 0; 1972 } 1973 } 1974 fd->sc_blkno += fd->sc_nblks; 1975 fd->sc_skip += fd->sc_nbytes; 1976 fd->sc_bcount -= fd->sc_nbytes; 1977 if (finfo == NULL && fd->sc_bcount > 0) { 1978 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1979 goto doseek; 1980 } 1981 fdfinish(fd, bp); 1982 goto loop; 1983 1984 case DORESET: 1985 /* try a reset, keep motor on */ 1986 fd_set_motor(fdc); 1987 delay(100); 1988 fdc->sc_nstat = 0; 1989 fdc->sc_itask = FDC_ITASK_SENSEI; 1990 fdc->sc_state = RESETCOMPLETE; 1991 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1992 fdc_reset(fdc); 1993 return 1; /* will return later */ 1994 1995 case RESETCOMPLETE: 1996 callout_stop(&fdc->sc_timo_ch); 1997 fdconf(fdc); 1998 1999 /* FALLTHROUGH */ 2000 case DORECAL: 2001 fdc->sc_state = RECALWAIT; 2002 fdc->sc_itask = FDC_ITASK_SENSEI; 2003 fdc->sc_nstat = 0; 2004 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 2005 /* recalibrate function */ 2006 FDC_WRFIFO(fdc, NE7CMD_RECAL); 2007 FDC_WRFIFO(fdc, fd->sc_drive); 2008 return 1; /* will return later */ 2009 2010 case RECALWAIT: 2011 callout_stop(&fdc->sc_timo_ch); 2012 fdc->sc_state = RECALCOMPLETE; 2013 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 2014 /* allow 1/30 second for heads to settle */ 2015 callout_reset(&fdc->sc_intr_ch, hz / 30, 2016 fdcpseudointr, fdc); 2017 return 1; /* will return later */ 2018 } 2019 2020 case RECALCOMPLETE: 2021 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 2022 #ifdef FD_DEBUG 2023 if (fdc_debug) 2024 fdcstatus(fdc, "recalibrate failed"); 2025 #endif 2026 fdcretry(fdc); 2027 goto loop; 2028 } 2029 fd->sc_cylin = 0; 2030 goto doseek; 2031 2032 case MOTORWAIT: 2033 if (fd->sc_flags & FD_MOTOR_WAIT) 2034 return 1; /* time's not up yet */ 2035 goto doseek; 2036 2037 default: 2038 fdcstatus(fdc, "stray interrupt"); 2039 return 1; 2040 } 2041 #ifdef DIAGNOSTIC 2042 panic("fdcintr: impossible"); 2043 #endif 2044 2045 xxx: 2046 /* 2047 * We get here if the chip locks up in FDC_WRFIFO() 2048 * Cancel any operation and schedule a reset 2049 */ 2050 callout_stop(&fdc->sc_timo_ch); 2051 fdcretry(fdc); 2052 fdc->sc_state = DORESET; 2053 goto loop; 2054 2055 #undef st0 2056 #undef st1 2057 #undef cyl 2058 } 2059 2060 void 2061 fdcretry(struct fdc_softc *fdc) 2062 { 2063 struct fd_softc *fd; 2064 struct buf *bp; 2065 int error = EIO; 2066 2067 fd = fdc->sc_drives.tqh_first; 2068 bp = bufq_peek(fd->sc_q); 2069 2070 fdc->sc_overruns = 0; 2071 if (fd->sc_opts & FDOPT_NORETRY) 2072 goto fail; 2073 2074 switch (fdc->sc_errors) { 2075 case 0: 2076 if (fdc->sc_nstat == 7 && 2077 (fdc->sc_status[0] & 0xd8) == 0x40 && 2078 (fdc->sc_status[1] & 0x2) == 0x2) { 2079 aprint_error_dev(fdc->sc_dev, "read-only medium\n"); 2080 error = EROFS; 2081 goto failsilent; 2082 } 2083 /* try again */ 2084 fdc->sc_state = 2085 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2086 break; 2087 2088 case 1: case 2: case 3: 2089 /* didn't work; try recalibrating */ 2090 fdc->sc_state = DORECAL; 2091 break; 2092 2093 case 4: 2094 if (fdc->sc_nstat == 7 && 2095 fdc->sc_status[0] == 0 && 2096 fdc->sc_status[1] == 0 && 2097 fdc->sc_status[2] == 0) { 2098 /* 2099 * We've retried a few times and we've got 2100 * valid status and all three status bytes 2101 * are zero. Assume this condition is the 2102 * result of no disk loaded into the drive. 2103 */ 2104 aprint_error_dev(fdc->sc_dev, "no medium?\n"); 2105 error = ENODEV; 2106 goto failsilent; 2107 } 2108 2109 /* still no go; reset the bastard */ 2110 fdc->sc_state = DORESET; 2111 break; 2112 2113 default: 2114 fail: 2115 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2116 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2117 fd->sc_skip / FD_BSIZE(fd), 2118 (struct disklabel *)NULL); 2119 printf("\n"); 2120 fdcstatus(fdc, "controller status"); 2121 } 2122 2123 failsilent: 2124 bp->b_error = error; 2125 fdfinish(fd, bp); 2126 } 2127 fdc->sc_errors++; 2128 } 2129 2130 int 2131 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2132 { 2133 struct fd_softc *fd; 2134 struct fdc_softc *fdc; 2135 struct fdformat_parms *form_parms; 2136 struct fdformat_cmd *form_cmd; 2137 struct ne7_fd_formb *fd_formb; 2138 int il[FD_MAX_NSEC + 1]; 2139 int unit; 2140 int i, j; 2141 int error; 2142 2143 unit = FDUNIT(dev); 2144 if (unit >= fd_cd.cd_ndevs) 2145 return ENXIO; 2146 2147 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2148 fdc = device_private(device_parent(fd->sc_dev)); 2149 2150 switch (cmd) { 2151 case DIOCGDINFO: 2152 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2153 return 0; 2154 2155 case DIOCWLABEL: 2156 if ((flag & FWRITE) == 0) 2157 return EBADF; 2158 /* XXX do something */ 2159 return 0; 2160 2161 case DIOCWDINFO: 2162 if ((flag & FWRITE) == 0) 2163 return EBADF; 2164 2165 error = setdisklabel(fd->sc_dk.dk_label, 2166 (struct disklabel *)addr, 0, 2167 fd->sc_dk.dk_cpulabel); 2168 if (error) 2169 return error; 2170 2171 error = writedisklabel(dev, fdstrategy, 2172 fd->sc_dk.dk_label, 2173 fd->sc_dk.dk_cpulabel); 2174 return error; 2175 2176 case DIOCLOCK: 2177 /* 2178 * Nothing to do here, really. 2179 */ 2180 return 0; 2181 2182 case DIOCEJECT: 2183 if (*(int *)addr == 0) { 2184 int part = DISKPART(dev); 2185 /* 2186 * Don't force eject: check that we are the only 2187 * partition open. If so, unlock it. 2188 */ 2189 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2190 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2191 fd->sc_dk.dk_openmask) { 2192 return EBUSY; 2193 } 2194 } 2195 /* FALLTHROUGH */ 2196 case ODIOCEJECT: 2197 if (fdc->sc_flags & FDC_NOEJECT) 2198 return EINVAL; 2199 fd_do_eject(fd); 2200 return 0; 2201 2202 case FDIOCGETFORMAT: 2203 form_parms = (struct fdformat_parms *)addr; 2204 form_parms->fdformat_version = FDFORMAT_VERSION; 2205 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2206 form_parms->ncyl = fd->sc_type->cylinders; 2207 form_parms->nspt = fd->sc_type->sectrac; 2208 form_parms->ntrk = fd->sc_type->heads; 2209 form_parms->stepspercyl = fd->sc_type->step; 2210 form_parms->gaplen = fd->sc_type->gap2; 2211 form_parms->fillbyte = fd->sc_type->fillbyte; 2212 form_parms->interleave = fd->sc_type->interleave; 2213 switch (fd->sc_type->rate) { 2214 case FDC_500KBPS: 2215 form_parms->xfer_rate = 500 * 1024; 2216 break; 2217 case FDC_300KBPS: 2218 form_parms->xfer_rate = 300 * 1024; 2219 break; 2220 case FDC_250KBPS: 2221 form_parms->xfer_rate = 250 * 1024; 2222 break; 2223 default: 2224 return EINVAL; 2225 } 2226 return 0; 2227 2228 case FDIOCSETFORMAT: 2229 if ((flag & FWRITE) == 0) 2230 return EBADF; /* must be opened for writing */ 2231 2232 form_parms = (struct fdformat_parms *)addr; 2233 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2234 return EINVAL;/* wrong version of formatting prog */ 2235 2236 i = form_parms->nbps >> 7; 2237 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2238 i & ~(1 << (ffs(i)-1))) 2239 /* not a power-of-two multiple of 128 */ 2240 return EINVAL; 2241 2242 switch (form_parms->xfer_rate) { 2243 case 500 * 1024: 2244 fd->sc_type->rate = FDC_500KBPS; 2245 break; 2246 case 300 * 1024: 2247 fd->sc_type->rate = FDC_300KBPS; 2248 break; 2249 case 250 * 1024: 2250 fd->sc_type->rate = FDC_250KBPS; 2251 break; 2252 default: 2253 return EINVAL; 2254 } 2255 2256 if (form_parms->nspt > FD_MAX_NSEC || 2257 form_parms->fillbyte > 0xff || 2258 form_parms->interleave > 0xff) 2259 return EINVAL; 2260 fd->sc_type->sectrac = form_parms->nspt; 2261 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2262 return EINVAL; 2263 fd->sc_type->heads = form_parms->ntrk; 2264 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2265 fd->sc_type->secsize = ffs(i)-1; 2266 fd->sc_type->gap2 = form_parms->gaplen; 2267 fd->sc_type->cylinders = form_parms->ncyl; 2268 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2269 form_parms->nbps / DEV_BSIZE; 2270 fd->sc_type->step = form_parms->stepspercyl; 2271 fd->sc_type->fillbyte = form_parms->fillbyte; 2272 fd->sc_type->interleave = form_parms->interleave; 2273 return 0; 2274 2275 case FDIOCFORMAT_TRACK: 2276 if((flag & FWRITE) == 0) 2277 /* must be opened for writing */ 2278 return EBADF; 2279 form_cmd = (struct fdformat_cmd *)addr; 2280 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2281 /* wrong version of formatting prog */ 2282 return EINVAL; 2283 2284 if (form_cmd->head >= fd->sc_type->heads || 2285 form_cmd->cylinder >= fd->sc_type->cylinders) { 2286 return EINVAL; 2287 } 2288 2289 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2290 M_TEMP, M_NOWAIT); 2291 if (fd_formb == 0) 2292 return ENOMEM; 2293 2294 fd_formb->head = form_cmd->head; 2295 fd_formb->cyl = form_cmd->cylinder; 2296 fd_formb->transfer_rate = fd->sc_type->rate; 2297 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2298 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2299 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2300 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2301 2302 memset(il, 0, sizeof il); 2303 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2304 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2305 j++; 2306 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2307 j += fd->sc_type->interleave; 2308 } 2309 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2310 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2311 fd_formb->fd_formb_headno(i) = form_cmd->head; 2312 fd_formb->fd_formb_secno(i) = il[i + 1]; 2313 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2314 } 2315 2316 error = fdformat(dev, fd_formb, l->l_proc); 2317 free(fd_formb, M_TEMP); 2318 return error; 2319 2320 case FDIOCGETOPTS: /* get drive options */ 2321 *(int *)addr = fd->sc_opts; 2322 return 0; 2323 2324 case FDIOCSETOPTS: /* set drive options */ 2325 fd->sc_opts = *(int *)addr; 2326 return 0; 2327 2328 #ifdef FD_DEBUG 2329 case _IO('f', 100): 2330 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2331 fdcresult(fdc); 2332 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2333 for (i = 0; i < fdc->sc_nstat; i++) 2334 printf(" 0x%x", fdc->sc_status[i]); 2335 printf(">\n"); 2336 return 0; 2337 2338 case _IOW('f', 101, int): 2339 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2340 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2341 fdconf(fdc); 2342 return 0; 2343 2344 case _IO('f', 102): 2345 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2346 fdcresult(fdc); 2347 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2348 for (i=0; i< fdc->sc_nstat; i++) 2349 printf(" 0x%x", fdc->sc_status[i]); 2350 printf(">\n"); 2351 return 0; 2352 #endif 2353 default: 2354 return ENOTTY; 2355 } 2356 2357 #ifdef DIAGNOSTIC 2358 panic("fdioctl: impossible"); 2359 #endif 2360 } 2361 2362 int 2363 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2364 { 2365 int rv = 0; 2366 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2367 struct fd_type *type = fd->sc_type; 2368 struct buf *bp; 2369 2370 /* set up a buffer header for fdstrategy() */ 2371 bp = getiobuf(NULL, false); 2372 if (bp == NULL) 2373 return ENOBUFS; 2374 2375 bp->b_vp = NULL; 2376 bp->b_cflags = BC_BUSY; 2377 bp->b_flags = B_PHYS | B_FORMAT; 2378 bp->b_proc = p; 2379 bp->b_dev = dev; 2380 2381 /* 2382 * Calculate a fake blkno, so fdstrategy() would initiate a 2383 * seek to the requested cylinder. 2384 */ 2385 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2386 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2387 / DEV_BSIZE; 2388 2389 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2390 bp->b_data = (void *)finfo; 2391 2392 #ifdef FD_DEBUG 2393 if (fdc_debug) { 2394 int i; 2395 2396 printf("fdformat: blkno 0x%llx count %d\n", 2397 (unsigned long long)bp->b_blkno, bp->b_bcount); 2398 2399 printf("\tcyl:\t%d\n", finfo->cyl); 2400 printf("\thead:\t%d\n", finfo->head); 2401 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2402 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2403 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2404 printf("\ttrack data:"); 2405 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2406 printf(" [c%d h%d s%d]", 2407 finfo->fd_formb_cylno(i), 2408 finfo->fd_formb_headno(i), 2409 finfo->fd_formb_secno(i) ); 2410 if (finfo->fd_formb_secsize(i) != 2) 2411 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2412 } 2413 printf("\n"); 2414 } 2415 #endif 2416 2417 /* now do the format */ 2418 fdstrategy(bp); 2419 2420 /* ...and wait for it to complete */ 2421 rv = biowait(bp); 2422 putiobuf(bp); 2423 return rv; 2424 } 2425 2426 void 2427 fdgetdisklabel(dev_t dev) 2428 { 2429 int i; 2430 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2431 struct disklabel *lp = fd->sc_dk.dk_label; 2432 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2433 2434 memset(lp, 0, sizeof(struct disklabel)); 2435 memset(clp, 0, sizeof(struct cpu_disklabel)); 2436 2437 lp->d_type = DKTYPE_FLOPPY; 2438 lp->d_secsize = FD_BSIZE(fd); 2439 lp->d_secpercyl = fd->sc_type->seccyl; 2440 lp->d_nsectors = fd->sc_type->sectrac; 2441 lp->d_ncylinders = fd->sc_type->cylinders; 2442 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2443 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2444 lp->d_rpm = 300; /* XXX like it matters... */ 2445 2446 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2447 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2448 lp->d_interleave = 1; 2449 lp->d_flags = D_REMOVABLE; 2450 2451 lp->d_partitions[RAW_PART].p_offset = 0; 2452 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2453 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2454 lp->d_npartitions = RAW_PART + 1; 2455 2456 lp->d_magic = DISKMAGIC; 2457 lp->d_magic2 = DISKMAGIC; 2458 lp->d_checksum = dkcksum(lp); 2459 2460 /* 2461 * Call the generic disklabel extraction routine. If there's 2462 * not a label there, fake it. 2463 */ 2464 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2465 strncpy(lp->d_packname, "default label", 2466 sizeof(lp->d_packname)); 2467 /* 2468 * Reset the partition info; it might have gotten 2469 * trashed in readdisklabel(). 2470 * 2471 * XXX Why do we have to do this? readdisklabel() 2472 * should be safe... 2473 */ 2474 for (i = 0; i < MAXPARTITIONS; ++i) { 2475 lp->d_partitions[i].p_offset = 0; 2476 if (i == RAW_PART) { 2477 lp->d_partitions[i].p_size = 2478 lp->d_secpercyl * lp->d_ncylinders; 2479 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2480 } else { 2481 lp->d_partitions[i].p_size = 0; 2482 lp->d_partitions[i].p_fstype = FS_UNUSED; 2483 } 2484 } 2485 lp->d_npartitions = RAW_PART + 1; 2486 } 2487 } 2488 2489 void 2490 fd_do_eject(struct fd_softc *fd) 2491 { 2492 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 2493 2494 #ifdef SUN4 2495 if (CPU_ISSUN4C) { 2496 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2497 delay(10); 2498 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2499 return; 2500 } 2501 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2502 #endif 2503 bus_space_tag_t t = fdc->sc_bustag; 2504 bus_space_handle_t h = fdc->sc_handle; 2505 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2506 2507 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2508 delay(10); 2509 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2510 return; 2511 #ifdef SUN4 2512 } 2513 #endif 2514 } 2515 2516 /* ARGSUSED */ 2517 void 2518 fd_mountroot_hook(device_t dev) 2519 { 2520 int c; 2521 2522 fd_do_eject((struct fd_softc *)dev); 2523 printf("Insert filesystem floppy and press return."); 2524 for (;;) { 2525 c = cngetc(); 2526 if ((c == '\r') || (c == '\n')) { 2527 printf("\n"); 2528 break; 2529 } 2530 } 2531 } 2532 2533 #ifdef MEMORY_DISK_HOOKS 2534 2535 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2536 2537 int 2538 fd_read_md_image(size_t *sizep, void **addrp) 2539 { 2540 struct buf buf, *bp = &buf; 2541 dev_t dev; 2542 off_t offset; 2543 char *addr; 2544 2545 dev = makedev(54,0); /* XXX */ 2546 2547 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2548 *addrp = addr; 2549 2550 if (fdopen(dev, 0, S_IFCHR, NULL)) 2551 panic("fd: mountroot: fdopen"); 2552 2553 offset = 0; 2554 2555 for (;;) { 2556 bp->b_dev = dev; 2557 bp->b_error = 0; 2558 bp->b_resid = 0; 2559 bp->b_proc = NULL; 2560 bp->b_cflags = BC_BUSY; 2561 bp->b_flags = B_PHYS | B_RAW | B_READ; 2562 bp->b_blkno = btodb(offset); 2563 bp->b_bcount = DEV_BSIZE; 2564 bp->b_data = addr; 2565 fdstrategy(bp); 2566 biowait(bp); 2567 if (bp->b_error) 2568 panic("fd: mountroot: fdread error %d", bp->b_error); 2569 2570 if (bp->b_resid != 0) 2571 break; 2572 2573 addr += DEV_BSIZE; 2574 offset += DEV_BSIZE; 2575 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2576 break; 2577 } 2578 (void)fdclose(dev, 0, S_IFCHR, NULL); 2579 *sizep = offset; 2580 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2581 return 0; 2582 } 2583 #endif /* MEMORY_DISK_HOOKS */ 2584 2585 static void 2586 fd_set_geometry(struct fd_softc *fd) 2587 { 2588 const struct fd_type *fdt; 2589 2590 fdt = fd->sc_type; 2591 if (fdt == NULL) { 2592 fdt = fd->sc_deftype; 2593 if (fdt == NULL) 2594 return; 2595 } 2596 2597 struct disk_geom *dg = &fd->sc_dk.dk_geom; 2598 2599 memset(dg, 0, sizeof(*dg)); 2600 dg->dg_secperunit = fdt->size; 2601 dg->dg_nsectors = fdt->sectrac; 2602 switch (fdt->secsize) { 2603 case 2: 2604 dg->dg_secsize = 512; 2605 break; 2606 case 3: 2607 dg->dg_secsize = 1024; 2608 break; 2609 default: 2610 break; 2611 } 2612 dg->dg_ntracks = fdt->heads; 2613 dg->dg_ncylinders = fdt->cylinders; 2614 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 2615 } 2616
Indexes created Tue Sep 30 11:09:46 GMT 2025