fdc.c revision 1.41
1 /* $NetBSD: fdc.c,v 1.41 2014/07/25 08:10:35 dholland 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 1.41 2014/07/25 08:10:35 dholland 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 = { fdstrategy, NULL }; 374 375 struct fd_type *fd_nvtotype(char *, int, int); 376 void fd_set_motor(struct fdc_softc *); 377 void fd_motor_off(void *); 378 void fd_motor_on(void *); 379 int fdcresult(struct fdc_softc *); 380 int fdc_wrfifo(struct fdc_softc *, uint8_t); 381 void fdcstart(struct fdc_softc *); 382 void fdcstatus(struct fdc_softc *, const char *); 383 void fdc_reset(struct fdc_softc *); 384 int fdc_diskchange(struct fdc_softc *); 385 void fdctimeout(void *); 386 void fdcpseudointr(void *); 387 int fdc_c_hwintr(void *); 388 void fdchwintr(void); 389 void fdcswintr(void *); 390 int fdcstate(struct fdc_softc *); 391 void fdcretry(struct fdc_softc *); 392 void fdfinish(struct fd_softc *, struct buf *); 393 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 394 void fd_do_eject(struct fd_softc *); 395 void fd_mountroot_hook(device_t ); 396 static int fdconf(struct fdc_softc *); 397 static void establish_chip_type( 398 struct fdc_softc *, 399 bus_space_tag_t, 400 bus_addr_t, 401 bus_size_t, 402 bus_space_handle_t); 403 static void fd_set_geometry(struct fd_softc *); 404 405 #ifdef MEMORY_DISK_HOOKS 406 int fd_read_md_image(size_t *, void **); 407 #endif 408 409 #ifdef SUN4 410 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 411 412 int 413 fdcmatch_mainbus(device_t parent, cfdata_t match, void *aux) 414 { 415 struct mainbus_attach_args *ma = aux; 416 417 /* 418 * Floppy controller is on mainbus on sun4c. 419 */ 420 if (!CPU_ISSUN4C) 421 return 0; 422 423 /* sun4c PROMs call the controller "fd" */ 424 if (strcmp("fd", ma->ma_name) != 0) 425 return 0; 426 427 return bus_space_probe(ma->ma_bustag, 428 ma->ma_paddr, 429 1, /* probe size */ 430 0, /* offset */ 431 0, /* flags */ 432 NULL, NULL); 433 } 434 435 int 436 fdcmatch_obio(device_t parent, cfdata_t match, void *aux) 437 { 438 union obio_attach_args *uoba = aux; 439 struct sbus_attach_args *sa; 440 441 /* 442 * Floppy controller is on obio on sun4m. 443 */ 444 if (uoba->uoba_isobio4 != 0) 445 return 0; 446 447 sa = &uoba->uoba_sbus; 448 449 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 450 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 451 return 0; 452 453 return bus_space_probe(sa->sa_bustag, 454 sbus_bus_addr(sa->sa_bustag, 455 sa->sa_slot, sa->sa_offset), 456 1, /* probe size */ 457 0, /* offset */ 458 0, /* flags */ 459 NULL, NULL); 460 } 461 462 #elif SUN4U 463 464 int 465 fdcmatch_sbus(device_t parent, cfdata_t match, void *aux) 466 { 467 struct sbus_attach_args *sa = aux; 468 469 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 470 } 471 472 int 473 fdcmatch_ebus(device_t parent, cfdata_t match, void *aux) 474 { 475 struct ebus_attach_args *ea = aux; 476 477 return strcmp("fdthree", ea->ea_name) == 0; 478 } 479 #endif 480 481 static void 482 establish_chip_type(struct fdc_softc *fdc, 483 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 484 bus_space_handle_t handle) 485 { 486 uint8_t v; 487 488 /* 489 * This hack from Chris Torek: apparently DOR really 490 * addresses MSR/DRS on a 82072. 491 * We used to rely on the VERSION command to tell the 492 * difference (which did not work). 493 */ 494 495 /* First, check the size of the register bank */ 496 if (size < 8) 497 /* It isn't a 82077 */ 498 return; 499 500 #ifdef SUN4 501 /* Then probe the DOR register offset */ 502 if (bus_space_probe(tag, addr, 503 1, /* probe size */ 504 FDREG77_DOR, /* offset */ 505 0, /* flags */ 506 NULL, NULL) == 0) { 507 508 /* It isn't a 82077 */ 509 return; 510 } 511 #endif 512 513 v = bus_space_read_1(tag, handle, FDREG77_DOR); 514 if (v == NE7_RQM) { 515 /* 516 * Value in DOR looks like it's really MSR 517 */ 518 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 519 v = bus_space_read_1(tag, handle, FDREG77_DOR); 520 if (v == NE7_RQM) { 521 /* 522 * The value in the DOR didn't stick; 523 * it isn't a 82077 524 */ 525 return; 526 } 527 } 528 529 fdc->sc_flags |= FDC_82077; 530 } 531 532 /* 533 * Arguments passed between fdcattach and fdprobe. 534 */ 535 struct fdc_attach_args { 536 int fa_drive; 537 struct fd_type *fa_deftype; 538 }; 539 540 /* 541 * Print the location of a disk drive (called just before attaching the 542 * the drive). If `fdc' is not NULL, the drive was found but was not 543 * in the system config file; print the drive name as well. 544 * Return QUIET (config_find ignores this if the device was configured) to 545 * avoid printing `fdN not configured' messages. 546 */ 547 int 548 fdprint(void *aux, const char *fdc) 549 { 550 register struct fdc_attach_args *fa = aux; 551 552 if (!fdc) 553 aprint_normal(" drive %d", fa->fa_drive); 554 return QUIET; 555 } 556 557 /* 558 * Configure several parameters and features on the FDC. 559 * Return 0 on success. 560 */ 561 static int 562 fdconf(struct fdc_softc *fdc) 563 { 564 int vroom; 565 566 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 567 return -1; 568 569 /* 570 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 571 * the PROM thinks is appropriate. 572 */ 573 if ((vroom = fdc->sc_status[7]) == 0) 574 vroom = 0x64; 575 576 /* Configure controller to use FIFO and Implied Seek */ 577 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 578 return -1; 579 if (fdc_wrfifo(fdc, vroom) != 0) 580 return -1; 581 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 582 return -1; 583 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 584 return -1; 585 /* No result phase for the NE7CMD_CFG command */ 586 587 if ((fdc->sc_flags & FDC_82077) != 0) { 588 /* Lock configuration across soft resets. */ 589 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 590 fdcresult(fdc) != 1) { 591 #ifdef DEBUG 592 printf("fdconf: CFGLOCK failed"); 593 #endif 594 return -1; 595 } 596 } 597 598 return 0; 599 #if 0 600 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 601 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 602 if (fdc_debug) 603 printf("[version cmd]"); 604 } 605 #endif 606 } 607 608 #ifdef SUN4 609 void 610 fdcattach_mainbus(device_t parent, device_t self, void *aux) 611 { 612 struct fdc_softc *fdc = device_private(self); 613 struct mainbus_attach_args *ma = aux; 614 615 fdc->sc_dev = self; 616 fdc->sc_bustag = ma->ma_bustag; 617 618 if (bus_space_map( 619 ma->ma_bustag, 620 ma->ma_paddr, 621 ma->ma_size, 622 BUS_SPACE_MAP_LINEAR, 623 &fdc->sc_handle) != 0) { 624 aprint_error_dev(self, "cannot map registers\n"); 625 return; 626 } 627 628 establish_chip_type(fdc, 629 ma->ma_bustag, 630 ma->ma_paddr, 631 ma->ma_size, 632 fdc->sc_handle); 633 634 if (fdcattach(fdc, ma->ma_pri) != 0) 635 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 636 } 637 638 void 639 fdcattach_obio(device_t parent, device_t self, void *aux) 640 { 641 struct fdc_softc *fdc = device_private(self); 642 union obio_attach_args *uoba = aux; 643 struct sbus_attach_args *sa = &uoba->uoba_sbus; 644 645 if (sa->sa_nintr == 0) { 646 printf(": no interrupt line configured\n"); 647 return; 648 } 649 650 fdc->sc_dev = self; 651 fdc->sc_bustag = sa->sa_bustag; 652 653 if (sbus_bus_map(sa->sa_bustag, 654 sa->sa_slot, sa->sa_offset, sa->sa_size, 655 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 656 aprint_error_dev(self, "cannot map control registers\n"); 657 return; 658 } 659 660 establish_chip_type(fdc, 661 sa->sa_bustag, 662 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 663 sa->sa_size, 664 fdc->sc_handle); 665 666 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 667 printf(": no drives attached\n"); 668 return; 669 } 670 671 if (fdcattach(fdc, sa->sa_pri) != 0) 672 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 673 } 674 675 #elif SUN4U 676 677 void 678 fdcattach_sbus(device_t parent, device_t self, void *aux) 679 { 680 struct fdc_softc *fdc = device_private(self); 681 struct sbus_attach_args *sa = aux; 682 683 if (sa->sa_nintr == 0) { 684 printf(": no interrupt line configured\n"); 685 return; 686 } 687 688 if (auxio_fd_control(0) != 0) { 689 printf(": can't attach before auxio\n"); 690 return; 691 } 692 693 fdc->sc_dev = self; 694 fdc->sc_bustag = sa->sa_bustag; 695 696 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 697 sa->sa_size, 0, &fdc->sc_handle) != 0) { 698 printf(": cannot map control registers\n"); 699 return; 700 } 701 702 establish_chip_type(fdc, 703 sa->sa_bustag, 704 BUS_ADDR(sa->sa_slot, sa->sa_offset), 705 sa->sa_size, 706 fdc->sc_handle); 707 708 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 709 printf(": no drives attached\n"); 710 return; 711 } 712 713 if (prom_getproplen(sa->sa_node, "manual") >= 0) 714 fdc->sc_flags |= FDC_NOEJECT; 715 716 717 if (fdcattach(fdc, sa->sa_pri) != 0) 718 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 719 } 720 721 void 722 fdcattach_ebus(device_t parent, device_t self, void *aux) 723 { 724 struct fdc_softc *fdc = device_private(self); 725 struct ebus_attach_args *ea = aux; 726 int map_vaddr; 727 728 if (ea->ea_nintr == 0) { 729 printf(": no interrupt line configured\n"); 730 return; 731 } 732 733 if (ea->ea_nreg < 3) { 734 printf(": expected 3 registers, only got %d\n", 735 ea->ea_nreg); 736 return; 737 } 738 739 fdc->sc_dev = self; 740 fdc->sc_bustag = ea->ea_bustag; 741 742 if (ea->ea_nvaddr > 0) { 743 sparc_promaddr_to_handle(ea->ea_bustag, 744 ea->ea_vaddr[0], &fdc->sc_handle); 745 map_vaddr = 1; 746 } else if (bus_space_map(fdc->sc_bustag, 747 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 748 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 749 map_vaddr = 0; 750 } else { 751 printf(": can't map control registers\n"); 752 return; 753 } 754 755 establish_chip_type(fdc, 756 fdc->sc_bustag, 757 map_vaddr ? ea->ea_vaddr[0] : 758 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 759 ea->ea_reg[0].size, 760 fdc->sc_handle); 761 762 fdc->sc_flags |= FDC_EBUS; 763 764 if (prom_getproplen(ea->ea_node, "manual") >= 0) 765 fdc->sc_flags |= FDC_NOEJECT; 766 767 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 768 if (map_vaddr == 0) 769 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 770 ea->ea_reg[0].size); 771 } 772 #endif 773 774 int 775 fdcattach(struct fdc_softc *fdc, int pri) 776 { 777 struct fdc_attach_args fa; 778 int drive_attached; 779 char code; 780 781 callout_init(&fdc->sc_timo_ch, 0); 782 callout_init(&fdc->sc_intr_ch, 0); 783 784 fdc->sc_state = DEVIDLE; 785 fdc->sc_itask = FDC_ITASK_NONE; 786 fdc->sc_istatus = FDC_ISTATUS_NONE; 787 fdc->sc_flags |= FDC_EIS; 788 TAILQ_INIT(&fdc->sc_drives); 789 790 if ((fdc->sc_flags & FDC_82077) != 0) { 791 fdc->sc_reg_msr = FDREG77_MSR; 792 fdc->sc_reg_fifo = FDREG77_FIFO; 793 fdc->sc_reg_dor = FDREG77_DOR; 794 fdc->sc_reg_dir = FDREG77_DIR; 795 code = '7'; 796 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 797 } else { 798 fdc->sc_reg_msr = FDREG72_MSR; 799 fdc->sc_reg_fifo = FDREG72_FIFO; 800 fdc->sc_reg_dor = 0; 801 code = '2'; 802 } 803 804 /* 805 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 806 * Note: CFG_EFIFO is active-low, initial threshold value: 8 807 */ 808 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 809 if (fdconf(fdc) != 0) { 810 printf(": no drives attached\n"); 811 return -1; 812 } 813 814 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 815 if (fdc->sc_sicookie == NULL) { 816 aprint_normal("\n"); 817 aprint_error_dev(fdc->sc_dev, 818 "cannot register soft interrupt handler\n"); 819 callout_stop(&fdc->sc_timo_ch); 820 callout_stop(&fdc->sc_intr_ch); 821 return -1; 822 } 823 #ifdef SUN4 824 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 825 #elif SUN4U 826 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 827 if (fdc->sc_flags & FDC_NOEJECT) 828 printf(": manual eject"); 829 printf("\n"); 830 #endif 831 832 #ifdef SUN4 833 fdciop = &fdc->sc_io; 834 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 835 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 836 #elif SUN4U 837 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 838 fdc_c_hwintr, fdc) == NULL) { 839 #endif 840 aprint_normal("\n"); 841 aprint_error_dev(fdc->sc_dev, 842 "cannot register interrupt handler\n"); 843 callout_stop(&fdc->sc_timo_ch); 844 callout_stop(&fdc->sc_intr_ch); 845 softint_disestablish(fdc->sc_sicookie); 846 return -1; 847 } 848 849 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 850 device_xname(fdc->sc_dev), "intr"); 851 852 /* physical limit: four drives per controller. */ 853 drive_attached = 0; 854 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 855 fa.fa_deftype = NULL; /* unknown */ 856 fa.fa_deftype = &fd_types[0]; /* XXX */ 857 if (config_found(fdc->sc_dev, (void *)&fa, fdprint) != NULL) 858 drive_attached = 1; 859 } 860 861 if (drive_attached == 0) { 862 /* XXX - dis-establish interrupts here */ 863 /* return -1; */ 864 } 865 866 return 0; 867 } 868 869 int 870 fdmatch(device_t parent, cfdata_t match, void *aux) 871 { 872 struct fdc_softc *fdc = device_private(parent); 873 bus_space_tag_t t = fdc->sc_bustag; 874 bus_space_handle_t h = fdc->sc_handle; 875 struct fdc_attach_args *fa = aux; 876 int drive = fa->fa_drive; 877 int n, ok; 878 879 if (drive > 0) 880 /* XXX - for now, punt on more than one drive */ 881 return 0; 882 883 if ((fdc->sc_flags & FDC_82077) != 0) { 884 /* select drive and turn on motor */ 885 bus_space_write_1(t, h, fdc->sc_reg_dor, 886 drive | FDO_FRST | FDO_MOEN(drive)); 887 /* wait for motor to spin up */ 888 delay(250000); 889 #ifdef SUN4 890 } else { 891 auxregbisc(AUXIO4C_FDS, 0); 892 #endif 893 } 894 fdc->sc_nstat = 0; 895 fdc_wrfifo(fdc, NE7CMD_RECAL); 896 fdc_wrfifo(fdc, drive); 897 898 /* Wait for recalibration to complete */ 899 for (n = 0; n < 10000; n++) { 900 uint8_t v; 901 902 delay(1000); 903 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 904 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 905 /* wait a bit longer till device *really* is ready */ 906 delay(100000); 907 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 908 break; 909 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 910 /* 911 * Got `invalid command'; we interpret it 912 * to mean that the re-calibrate hasn't in 913 * fact finished yet 914 */ 915 continue; 916 break; 917 } 918 } 919 n = fdc->sc_nstat; 920 #ifdef FD_DEBUG 921 if (fdc_debug) { 922 int i; 923 printf("fdprobe: %d stati:", n); 924 for (i = 0; i < n; i++) 925 printf(" 0x%x", fdc->sc_status[i]); 926 printf("\n"); 927 } 928 #endif 929 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 930 931 /* turn off motor */ 932 if ((fdc->sc_flags & FDC_82077) != 0) { 933 /* deselect drive and turn motor off */ 934 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 935 #ifdef SUN4 936 } else { 937 auxregbisc(0, AUXIO4C_FDS); 938 #endif 939 } 940 941 return ok; 942 } 943 944 /* 945 * Controller is working, and drive responded. Attach it. 946 */ 947 void 948 fdattach(device_t parent, device_t self, void *aux) 949 { 950 struct fdc_softc *fdc = device_private(parent); 951 struct fd_softc *fd = device_private(self); 952 struct fdc_attach_args *fa = aux; 953 struct fd_type *type = fa->fa_deftype; 954 int drive = fa->fa_drive; 955 956 fd->sc_dev = self; 957 callout_init(&fd->sc_motoron_ch, 0); 958 callout_init(&fd->sc_motoroff_ch, 0); 959 960 /* XXX Allow `flags' to override device type? */ 961 962 if (type) 963 printf(": %s %d cyl, %d head, %d sec\n", type->name, 964 type->cylinders, type->heads, type->sectrac); 965 else 966 printf(": density unknown\n"); 967 968 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 969 fd->sc_cylin = -1; 970 fd->sc_drive = drive; 971 fd->sc_deftype = type; 972 fdc->sc_fd[drive] = fd; 973 974 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 975 fdc_wrfifo(fdc, type->steprate); 976 /* XXX head load time == 6ms */ 977 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 978 979 /* 980 * Initialize and attach the disk structure. 981 */ 982 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 983 disk_attach(&fd->sc_dk); 984 985 /* 986 * Establish a mountroot_hook anyway in case we booted 987 * with RB_ASKNAME and get selected as the boot device. 988 */ 989 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 990 991 fd_set_geometry(fd); 992 993 /* Make sure the drive motor gets turned off at shutdown time. */ 994 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 995 aprint_error_dev(self, "couldn't establish power handler\n"); 996 } 997 998 bool fdshutdown(device_t self, int how) 999 { 1000 struct fd_softc *fd = device_private(self); 1001 1002 fd_motor_off(fd); 1003 return true; 1004 } 1005 1006 bool fdsuspend(device_t self, const pmf_qual_t *qual) 1007 { 1008 1009 return fdshutdown(self, boothowto); 1010 } 1011 1012 1013 static inline struct fd_type * 1014 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 1015 { 1016 int type = FDTYPE(dev); 1017 1018 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 1019 return NULL; 1020 return type ? &fd_types[type - 1] : fd->sc_deftype; 1021 } 1022 1023 void 1024 fdstrategy(struct buf *bp) 1025 { 1026 struct fd_softc *fd; 1027 int sz; 1028 int s; 1029 1030 /* Valid unit, controller, and request? */ 1031 fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 1032 if (fd == NULL) { 1033 bp->b_error = EINVAL; 1034 goto done; 1035 } 1036 1037 if (bp->b_blkno < 0 || 1038 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1039 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1040 (bp->b_flags & B_FORMAT) == 0)) { 1041 bp->b_error = EINVAL; 1042 goto done; 1043 } 1044 1045 /* If it's a null transfer, return immediately. */ 1046 if (bp->b_bcount == 0) 1047 goto done; 1048 1049 sz = howmany(bp->b_bcount, DEV_BSIZE); 1050 1051 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1052 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1053 - bp->b_blkno; 1054 if (sz == 0) { 1055 /* If exactly at end of disk, return EOF. */ 1056 bp->b_resid = bp->b_bcount; 1057 goto done; 1058 } 1059 if (sz < 0) { 1060 /* If past end of disk, return EINVAL. */ 1061 bp->b_error = EINVAL; 1062 goto done; 1063 } 1064 /* Otherwise, truncate request. */ 1065 bp->b_bcount = sz << DEV_BSHIFT; 1066 } 1067 1068 bp->b_rawblkno = bp->b_blkno; 1069 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1070 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1071 1072 #ifdef FD_DEBUG 1073 if (fdc_debug > 1) 1074 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1075 (long long)bp->b_blkno, bp->b_bcount, 1076 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1077 #endif 1078 1079 /* Queue transfer on drive, activate drive and controller if idle. */ 1080 s = splbio(); 1081 bufq_put(fd->sc_q, bp); 1082 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1083 if (fd->sc_active == 0) 1084 fdstart(fd); 1085 #ifdef DIAGNOSTIC 1086 else { 1087 struct fdc_softc *fdc = device_private( 1088 device_parent(fd->sc_dev)); 1089 if (fdc->sc_state == DEVIDLE) { 1090 printf("fdstrategy: controller inactive\n"); 1091 fdcstart(fdc); 1092 } 1093 } 1094 #endif 1095 splx(s); 1096 return; 1097 1098 done: 1099 /* Toss transfer; we're done early. */ 1100 biodone(bp); 1101 } 1102 1103 void 1104 fdstart(struct fd_softc *fd) 1105 { 1106 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1107 int active = fdc->sc_drives.tqh_first != 0; 1108 1109 /* Link into controller queue. */ 1110 fd->sc_active = 1; 1111 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1112 1113 /* If controller not already active, start it. */ 1114 if (!active) 1115 fdcstart(fdc); 1116 } 1117 1118 void 1119 fdfinish(struct fd_softc *fd, struct buf *bp) 1120 { 1121 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1122 1123 /* 1124 * Move this drive to the end of the queue to give others a `fair' 1125 * chance. We only force a switch if N operations are completed while 1126 * another drive is waiting to be serviced, since there is a long motor 1127 * startup delay whenever we switch. 1128 */ 1129 (void)bufq_get(fd->sc_q); 1130 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1131 fd->sc_ops = 0; 1132 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1133 if (bufq_peek(fd->sc_q) != NULL) { 1134 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1135 } else 1136 fd->sc_active = 0; 1137 } 1138 bp->b_resid = fd->sc_bcount; 1139 fd->sc_skip = 0; 1140 1141 biodone(bp); 1142 /* turn off motor 5s from now */ 1143 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1144 fdc->sc_state = DEVIDLE; 1145 } 1146 1147 void 1148 fdc_reset(struct fdc_softc *fdc) 1149 { 1150 bus_space_tag_t t = fdc->sc_bustag; 1151 bus_space_handle_t h = fdc->sc_handle; 1152 1153 if ((fdc->sc_flags & FDC_82077) != 0) { 1154 bus_space_write_1(t, h, fdc->sc_reg_dor, 1155 FDO_FDMAEN | FDO_MOEN(0)); 1156 } 1157 1158 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1159 delay(10); 1160 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1161 1162 if ((fdc->sc_flags & FDC_82077) != 0) { 1163 bus_space_write_1(t, h, fdc->sc_reg_dor, 1164 FDO_FRST | FDO_FDMAEN | FDO_DS); 1165 } 1166 #ifdef FD_DEBUG 1167 if (fdc_debug) 1168 printf("fdc reset\n"); 1169 #endif 1170 } 1171 1172 void 1173 fd_set_motor(struct fdc_softc *fdc) 1174 { 1175 struct fd_softc *fd; 1176 u_char status; 1177 int n; 1178 1179 if ((fdc->sc_flags & FDC_82077) != 0) { 1180 status = FDO_FRST | FDO_FDMAEN; 1181 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1182 status |= fd->sc_drive; 1183 1184 for (n = 0; n < 4; n++) 1185 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1186 status |= FDO_MOEN(n); 1187 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1188 fdc->sc_reg_dor, status); 1189 #ifdef SUN4 1190 } else { 1191 1192 for (n = 0; n < 4; n++) { 1193 if ((fd = fdc->sc_fd[n]) != NULL && 1194 (fd->sc_flags & FD_MOTOR) != 0) { 1195 auxregbisc(AUXIO4C_FDS, 0); 1196 return; 1197 } 1198 } 1199 auxregbisc(0, AUXIO4C_FDS); 1200 #endif 1201 } 1202 } 1203 1204 void 1205 fd_motor_off(void *arg) 1206 { 1207 struct fd_softc *fd = arg; 1208 int s; 1209 1210 s = splbio(); 1211 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1212 fd_set_motor(device_private(device_parent(fd->sc_dev))); 1213 splx(s); 1214 } 1215 1216 void 1217 fd_motor_on(void *arg) 1218 { 1219 struct fd_softc *fd = arg; 1220 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1221 int s; 1222 1223 s = splbio(); 1224 fd->sc_flags &= ~FD_MOTOR_WAIT; 1225 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1226 (void)fdcstate(fdc); 1227 splx(s); 1228 } 1229 1230 /* 1231 * Get status bytes off the FDC after a command has finished 1232 * Returns the number of status bytes read; -1 on error. 1233 * The return value is also stored in `sc_nstat'. 1234 */ 1235 int 1236 fdcresult(struct fdc_softc *fdc) 1237 { 1238 bus_space_tag_t t = fdc->sc_bustag; 1239 bus_space_handle_t h = fdc->sc_handle; 1240 int j, n = 0; 1241 1242 for (j = 10000; j; j--) { 1243 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1244 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1245 if (v == NE7_RQM) 1246 return fdc->sc_nstat = n; 1247 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1248 if (n >= sizeof(fdc->sc_status)) { 1249 log(LOG_ERR, "fdcresult: overrun\n"); 1250 return -1; 1251 } 1252 fdc->sc_status[n++] = 1253 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1254 } else 1255 delay(1); 1256 } 1257 1258 log(LOG_ERR, "fdcresult: timeout\n"); 1259 return fdc->sc_nstat = -1; 1260 } 1261 1262 /* 1263 * Write a command byte to the FDC. 1264 * Returns 0 on success; -1 on failure (i.e. timeout) 1265 */ 1266 int 1267 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1268 { 1269 bus_space_tag_t t = fdc->sc_bustag; 1270 bus_space_handle_t h = fdc->sc_handle; 1271 int i; 1272 1273 for (i = 100000; i-- > 0;) { 1274 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1275 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1276 /* The chip is ready */ 1277 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1278 return 0; 1279 } 1280 delay(1); 1281 } 1282 return -1; 1283 } 1284 1285 int 1286 fdc_diskchange(struct fdc_softc *fdc) 1287 { 1288 1289 #ifdef SUN4 1290 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1291 #endif 1292 bus_space_tag_t t = fdc->sc_bustag; 1293 bus_space_handle_t h = fdc->sc_handle; 1294 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1295 return (v & FDI_DCHG) != 0; 1296 #ifdef SUN4 1297 } else if (CPU_ISSUN4C) { 1298 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1299 } 1300 return 0; 1301 #endif 1302 } 1303 1304 int 1305 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1306 { 1307 int pmask; 1308 struct fd_softc *fd; 1309 struct fd_type *type; 1310 1311 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1312 if (fd == NULL) 1313 return ENXIO; 1314 type = fd_dev_to_type(fd, dev); 1315 if (type == NULL) 1316 return ENXIO; 1317 1318 if ((fd->sc_flags & FD_OPEN) != 0 && 1319 fd->sc_type != type) 1320 return EBUSY; 1321 1322 fd->sc_type = type; 1323 fd->sc_cylin = -1; 1324 fd->sc_flags |= FD_OPEN; 1325 1326 /* 1327 * Only update the disklabel if we're not open anywhere else. 1328 */ 1329 if (fd->sc_dk.dk_openmask == 0) 1330 fdgetdisklabel(dev); 1331 1332 pmask = (1 << DISKPART(dev)); 1333 1334 switch (fmt) { 1335 case S_IFCHR: 1336 fd->sc_dk.dk_copenmask |= pmask; 1337 break; 1338 1339 case S_IFBLK: 1340 fd->sc_dk.dk_bopenmask |= pmask; 1341 break; 1342 } 1343 fd->sc_dk.dk_openmask = 1344 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1345 1346 return 0; 1347 } 1348 1349 int 1350 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1351 { 1352 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1353 int pmask = (1 << DISKPART(dev)); 1354 1355 fd->sc_flags &= ~FD_OPEN; 1356 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1357 1358 switch (fmt) { 1359 case S_IFCHR: 1360 fd->sc_dk.dk_copenmask &= ~pmask; 1361 break; 1362 1363 case S_IFBLK: 1364 fd->sc_dk.dk_bopenmask &= ~pmask; 1365 break; 1366 } 1367 fd->sc_dk.dk_openmask = 1368 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1369 1370 return 0; 1371 } 1372 1373 int 1374 fdread(dev_t dev, struct uio *uio, int flag) 1375 { 1376 1377 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1378 } 1379 1380 int 1381 fdwrite(dev_t dev, struct uio *uio, int flag) 1382 { 1383 1384 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1385 } 1386 1387 void 1388 fdcstart(struct fdc_softc *fdc) 1389 { 1390 1391 #ifdef DIAGNOSTIC 1392 /* only got here if controller's drive queue was inactive; should 1393 be in idle state */ 1394 if (fdc->sc_state != DEVIDLE) { 1395 printf("fdcstart: not idle\n"); 1396 return; 1397 } 1398 #endif 1399 (void)fdcstate(fdc); 1400 } 1401 1402 static void 1403 fdcpstatus(struct fdc_softc *fdc) 1404 { 1405 char bits[64]; 1406 1407 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1408 printf(" (st0 %s", bits); 1409 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1410 printf(" st1 %s", bits); 1411 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1412 printf(" st2 %s", bits); 1413 printf(" cyl %d head %d sec %d)\n", 1414 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1415 } 1416 1417 void 1418 fdcstatus(struct fdc_softc *fdc, const char *s) 1419 { 1420 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1421 int n; 1422 char bits[64]; 1423 1424 /* Just print last status */ 1425 n = fdc->sc_nstat; 1426 1427 #if 0 1428 /* 1429 * A 82072 seems to return <invalid command> on 1430 * gratuitous Sense Interrupt commands. 1431 */ 1432 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1433 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1434 (void)fdcresult(fdc); 1435 n = 2; 1436 } 1437 #endif 1438 1439 printf("%s: %s: state %d", 1440 fd ? device_xname(fd->sc_dev) : "fdc", s, fdc->sc_state); 1441 1442 switch (n) { 1443 case 0: 1444 printf("\n"); 1445 break; 1446 case 2: 1447 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1448 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1449 break; 1450 case 7: 1451 fdcpstatus(fdc); 1452 break; 1453 #ifdef DIAGNOSTIC 1454 default: 1455 printf(" fdcstatus: weird size: %d\n", n); 1456 break; 1457 #endif 1458 } 1459 } 1460 1461 void 1462 fdctimeout(void *arg) 1463 { 1464 struct fdc_softc *fdc = arg; 1465 struct fd_softc *fd; 1466 int s; 1467 1468 s = splbio(); 1469 fd = fdc->sc_drives.tqh_first; 1470 if (fd == NULL) { 1471 aprint_error_dev(fdc->sc_dev, "timeout but no I/O pending: state %d, istatus=%d\n", 1472 fdc->sc_state, fdc->sc_istatus); 1473 fdc->sc_state = DEVIDLE; 1474 goto out; 1475 } 1476 1477 if (bufq_peek(fd->sc_q) != NULL) 1478 fdc->sc_state++; 1479 else 1480 fdc->sc_state = DEVIDLE; 1481 1482 (void)fdcstate(fdc); 1483 out: 1484 splx(s); 1485 1486 } 1487 1488 void 1489 fdcpseudointr(void *arg) 1490 { 1491 struct fdc_softc *fdc = arg; 1492 int s; 1493 1494 /* Just ensure it has the right spl. */ 1495 s = splbio(); 1496 (void)fdcstate(fdc); 1497 splx(s); 1498 } 1499 1500 1501 /* 1502 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1503 * handler is available. Unfortunately, we have no reliable way to 1504 * determine that the interrupt really came from the floppy controller; 1505 * just hope that the other devices that share this interrupt level 1506 * can do better.. 1507 */ 1508 int 1509 fdc_c_hwintr(void *arg) 1510 { 1511 struct fdc_softc *fdc = arg; 1512 bus_space_tag_t t = fdc->sc_bustag; 1513 bus_space_handle_t h = fdc->sc_handle; 1514 1515 switch (fdc->sc_itask) { 1516 case FDC_ITASK_NONE: 1517 return 0; 1518 case FDC_ITASK_SENSEI: 1519 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1520 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1521 else 1522 fdc->sc_istatus = FDC_ISTATUS_DONE; 1523 softint_schedule(fdc->sc_sicookie); 1524 return 1; 1525 case FDC_ITASK_RESULT: 1526 if (fdcresult(fdc) == -1) 1527 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1528 else 1529 fdc->sc_istatus = FDC_ISTATUS_DONE; 1530 softint_schedule(fdc->sc_sicookie); 1531 return 1; 1532 case FDC_ITASK_DMA: 1533 /* Proceed with pseudo-DMA below */ 1534 break; 1535 default: 1536 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1537 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1538 softint_schedule(fdc->sc_sicookie); 1539 return 1; 1540 } 1541 1542 /* 1543 * Pseudo DMA in progress 1544 */ 1545 for (;;) { 1546 uint8_t msr; 1547 1548 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1549 1550 if ((msr & NE7_RQM) == 0) 1551 /* That's all this round. */ 1552 break; 1553 1554 if ((msr & NE7_NDM) == 0) { 1555 /* Execution phase finished, get result. */ 1556 fdcresult(fdc); 1557 fdc->sc_istatus = FDC_ISTATUS_DONE; 1558 softint_schedule(fdc->sc_sicookie); 1559 break; 1560 } 1561 1562 if (fdc->sc_tc == 0) 1563 /* For some reason the controller wants to transfer 1564 more data then what we want to transfer. */ 1565 panic("fdc: overrun"); 1566 1567 /* Another byte can be transferred */ 1568 if ((msr & NE7_DIO) != 0) 1569 *fdc->sc_data = 1570 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1571 else 1572 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1573 *fdc->sc_data); 1574 1575 fdc->sc_data++; 1576 if (--fdc->sc_tc == 0) { 1577 FTC_FLIP; 1578 break; 1579 } 1580 } 1581 return 1; 1582 } 1583 1584 void 1585 fdcswintr(void *arg) 1586 { 1587 struct fdc_softc *fdc = arg; 1588 1589 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1590 /* This (software) interrupt is not for us */ 1591 return; 1592 1593 switch (fdc->sc_istatus) { 1594 case FDC_ISTATUS_ERROR: 1595 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1596 break; 1597 case FDC_ISTATUS_SPURIOUS: 1598 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1599 break; 1600 } 1601 1602 fdcstate(fdc); 1603 return; 1604 } 1605 1606 int 1607 fdcstate(struct fdc_softc *fdc) 1608 { 1609 1610 #define st0 fdc->sc_status[0] 1611 #define st1 fdc->sc_status[1] 1612 #define cyl fdc->sc_status[1] 1613 #define FDC_WRFIFO(fdc, c) do { \ 1614 if (fdc_wrfifo(fdc, (c))) { \ 1615 goto xxx; \ 1616 } \ 1617 } while(0) 1618 1619 struct fd_softc *fd; 1620 struct buf *bp; 1621 int read, head, sec, nblks; 1622 struct fd_type *type; 1623 struct ne7_fd_formb *finfo = NULL; 1624 1625 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1626 /* Prevent loop if the reset sequence produces errors */ 1627 if (fdc->sc_state != RESETCOMPLETE && 1628 fdc->sc_state != RECALWAIT && 1629 fdc->sc_state != RECALCOMPLETE) 1630 fdc->sc_state = DORESET; 1631 } 1632 1633 /* Clear I task/status field */ 1634 fdc->sc_istatus = FDC_ISTATUS_NONE; 1635 fdc->sc_itask = FDC_ITASK_NONE; 1636 1637 loop: 1638 /* Is there a drive for the controller to do a transfer with? */ 1639 fd = fdc->sc_drives.tqh_first; 1640 if (fd == NULL) { 1641 fdc->sc_state = DEVIDLE; 1642 return 0; 1643 } 1644 1645 /* Is there a transfer to this drive? If not, deactivate drive. */ 1646 bp = bufq_peek(fd->sc_q); 1647 if (bp == NULL) { 1648 fd->sc_ops = 0; 1649 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1650 fd->sc_active = 0; 1651 goto loop; 1652 } 1653 1654 if (bp->b_flags & B_FORMAT) 1655 finfo = (struct ne7_fd_formb *)bp->b_data; 1656 1657 switch (fdc->sc_state) { 1658 case DEVIDLE: 1659 fdc->sc_errors = 0; 1660 fd->sc_skip = 0; 1661 fd->sc_bcount = bp->b_bcount; 1662 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1663 callout_stop(&fd->sc_motoroff_ch); 1664 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1665 fdc->sc_state = MOTORWAIT; 1666 return 1; 1667 } 1668 if ((fd->sc_flags & FD_MOTOR) == 0) { 1669 /* Turn on the motor, being careful about pairing. */ 1670 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1671 if (ofd && ofd->sc_flags & FD_MOTOR) { 1672 callout_stop(&ofd->sc_motoroff_ch); 1673 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1674 } 1675 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1676 fd_set_motor(fdc); 1677 fdc->sc_state = MOTORWAIT; 1678 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1679 /* Allow .25s for motor to stabilize. */ 1680 callout_reset(&fd->sc_motoron_ch, hz / 4, 1681 fd_motor_on, fd); 1682 } else { 1683 fd->sc_flags &= ~FD_MOTOR_WAIT; 1684 goto loop; 1685 } 1686 return 1; 1687 } 1688 /* Make sure the right drive is selected. */ 1689 fd_set_motor(fdc); 1690 1691 if (fdc_diskchange(fdc)) 1692 goto dodskchg; 1693 1694 /*FALLTHROUGH*/ 1695 case DOSEEK: 1696 doseek: 1697 if ((fdc->sc_flags & FDC_EIS) && 1698 (bp->b_flags & B_FORMAT) == 0) { 1699 fd->sc_cylin = bp->b_cylinder; 1700 /* We use implied seek */ 1701 goto doio; 1702 } 1703 1704 if (fd->sc_cylin == bp->b_cylinder) 1705 goto doio; 1706 1707 fd->sc_cylin = -1; 1708 fdc->sc_state = SEEKWAIT; 1709 fdc->sc_nstat = 0; 1710 1711 iostat_seek(fd->sc_dk.dk_stats); 1712 1713 disk_busy(&fd->sc_dk); 1714 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1715 1716 /* specify command */ 1717 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1718 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1719 /* XXX head load time == 6ms */ 1720 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1721 1722 fdc->sc_itask = FDC_ITASK_SENSEI; 1723 /* seek function */ 1724 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1725 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1726 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1727 return 1; 1728 1729 case DODSKCHG: 1730 dodskchg: 1731 /* 1732 * Disk change: force a seek operation by going to cyl 1 1733 * followed by a recalibrate. 1734 */ 1735 disk_busy(&fd->sc_dk); 1736 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1737 fd->sc_cylin = -1; 1738 fdc->sc_nstat = 0; 1739 fdc->sc_state = DSKCHGWAIT; 1740 1741 fdc->sc_itask = FDC_ITASK_SENSEI; 1742 /* seek function */ 1743 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1744 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1745 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1746 return 1; 1747 1748 case DSKCHGWAIT: 1749 callout_stop(&fdc->sc_timo_ch); 1750 disk_unbusy(&fd->sc_dk, 0, 0); 1751 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1752 cyl != 1 * fd->sc_type->step) { 1753 fdcstatus(fdc, "dskchg seek failed"); 1754 fdc->sc_state = DORESET; 1755 } else 1756 fdc->sc_state = DORECAL; 1757 1758 if (fdc_diskchange(fdc)) { 1759 aprint_error_dev(fdc->sc_dev, 1760 "cannot clear disk change status\n"); 1761 fdc->sc_state = DORESET; 1762 } 1763 goto loop; 1764 1765 case DOIO: 1766 doio: 1767 if (finfo != NULL) 1768 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1769 (char *)finfo; 1770 type = fd->sc_type; 1771 sec = fd->sc_blkno % type->seccyl; 1772 nblks = type->seccyl - sec; 1773 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1774 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1775 fd->sc_nblks = nblks; 1776 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1777 head = sec / type->sectrac; 1778 sec -= head * type->sectrac; 1779 #ifdef DIAGNOSTIC 1780 {int block; 1781 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1782 sec; 1783 if (block != fd->sc_blkno) { 1784 printf("fdcintr: block %d != blkno %d\n", block, 1785 (int)fd->sc_blkno); 1786 #ifdef DDB 1787 Debugger(); 1788 #endif 1789 }} 1790 #endif 1791 read = bp->b_flags & B_READ; 1792 1793 /* Setup for pseudo DMA */ 1794 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1795 fdc->sc_tc = fd->sc_nbytes; 1796 1797 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1798 fdc->sc_reg_drs, type->rate); 1799 #ifdef FD_DEBUG 1800 if (fdc_debug > 1) 1801 printf("fdcstate: doio: %s drive %d " 1802 "track %d head %d sec %d nblks %d\n", 1803 finfo ? "format" : 1804 (read ? "read" : "write"), 1805 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1806 #endif 1807 fdc->sc_state = IOCOMPLETE; 1808 fdc->sc_itask = FDC_ITASK_DMA; 1809 fdc->sc_nstat = 0; 1810 1811 disk_busy(&fd->sc_dk); 1812 1813 /* allow 3 seconds for operation */ 1814 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1815 1816 if (finfo != NULL) { 1817 /* formatting */ 1818 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1819 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1820 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1821 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1822 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1823 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1824 } else { 1825 if (read) 1826 FDC_WRFIFO(fdc, NE7CMD_READ); 1827 else 1828 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1829 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1830 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1831 FDC_WRFIFO(fdc, head); 1832 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1833 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1834 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1835 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1836 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1837 } 1838 1839 return 1; /* will return later */ 1840 1841 case SEEKWAIT: 1842 callout_stop(&fdc->sc_timo_ch); 1843 fdc->sc_state = SEEKCOMPLETE; 1844 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1845 /* allow 1/50 second for heads to settle */ 1846 callout_reset(&fdc->sc_intr_ch, hz / 50, 1847 fdcpseudointr, fdc); 1848 return 1; /* will return later */ 1849 } 1850 /*FALLTHROUGH*/ 1851 case SEEKCOMPLETE: 1852 /* no data on seek */ 1853 disk_unbusy(&fd->sc_dk, 0, 0); 1854 1855 /* Make sure seek really happened. */ 1856 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1857 cyl != bp->b_cylinder * fd->sc_type->step) { 1858 #ifdef FD_DEBUG 1859 if (fdc_debug) 1860 fdcstatus(fdc, "seek failed"); 1861 #endif 1862 fdcretry(fdc); 1863 goto loop; 1864 } 1865 fd->sc_cylin = bp->b_cylinder; 1866 goto doio; 1867 1868 case IOTIMEDOUT: 1869 /* 1870 * Try to abort the I/O operation without resetting 1871 * the chip first. Poke TC and arrange to pick up 1872 * the timed out I/O command's status. 1873 */ 1874 fdc->sc_itask = FDC_ITASK_RESULT; 1875 fdc->sc_state = IOCLEANUPWAIT; 1876 fdc->sc_nstat = 0; 1877 /* 1/10 second should be enough */ 1878 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1879 FTC_FLIP; 1880 return 1; 1881 1882 case IOCLEANUPTIMEDOUT: 1883 case SEEKTIMEDOUT: 1884 case RECALTIMEDOUT: 1885 case RESETTIMEDOUT: 1886 case DSKCHGTIMEDOUT: 1887 fdcstatus(fdc, "timeout"); 1888 1889 /* All other timeouts always roll through to a chip reset */ 1890 fdcretry(fdc); 1891 1892 /* Force reset, no matter what fdcretry() says */ 1893 fdc->sc_state = DORESET; 1894 goto loop; 1895 1896 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1897 callout_stop(&fdc->sc_timo_ch); 1898 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1899 (bp->b_flags & B_READ)); 1900 fdcretry(fdc); 1901 goto loop; 1902 1903 case IOCOMPLETE: /* IO DONE, post-analyze */ 1904 callout_stop(&fdc->sc_timo_ch); 1905 1906 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1907 (bp->b_flags & B_READ)); 1908 1909 if (fdc->sc_nstat != 7 || st1 != 0 || 1910 ((st0 & 0xf8) != 0 && 1911 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1912 #ifdef FD_DEBUG 1913 if (fdc_debug) { 1914 fdcstatus(fdc, bp->b_flags & B_READ ? 1915 "read failed" : "write failed"); 1916 printf("blkno %lld nblks %d nstat %d tc %d\n", 1917 (long long)fd->sc_blkno, fd->sc_nblks, 1918 fdc->sc_nstat, fdc->sc_tc); 1919 } 1920 #endif 1921 if (fdc->sc_nstat == 7 && 1922 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1923 1924 /* 1925 * Silently retry overruns if no other 1926 * error bit is set. Adjust threshold. 1927 */ 1928 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1929 if (thr < 15) { 1930 thr++; 1931 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1932 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1933 #ifdef FD_DEBUG 1934 if (fdc_debug) 1935 printf("fdc: %d -> threshold\n", 1936 thr); 1937 #endif 1938 fdconf(fdc); 1939 fdc->sc_overruns = 0; 1940 } 1941 if (++fdc->sc_overruns < 3) { 1942 fdc->sc_state = DOIO; 1943 goto loop; 1944 } 1945 } 1946 fdcretry(fdc); 1947 goto loop; 1948 } 1949 if (fdc->sc_errors) { 1950 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1951 fd->sc_skip / FD_BSIZE(fd), 1952 (struct disklabel *)NULL); 1953 printf("\n"); 1954 fdc->sc_errors = 0; 1955 } else { 1956 if (--fdc->sc_overruns < -20) { 1957 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1958 if (thr > 0) { 1959 thr--; 1960 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1961 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1962 #ifdef FD_DEBUG 1963 if (fdc_debug) 1964 printf("fdc: %d -> threshold\n", 1965 thr); 1966 #endif 1967 fdconf(fdc); 1968 } 1969 fdc->sc_overruns = 0; 1970 } 1971 } 1972 fd->sc_blkno += fd->sc_nblks; 1973 fd->sc_skip += fd->sc_nbytes; 1974 fd->sc_bcount -= fd->sc_nbytes; 1975 if (finfo == NULL && fd->sc_bcount > 0) { 1976 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1977 goto doseek; 1978 } 1979 fdfinish(fd, bp); 1980 goto loop; 1981 1982 case DORESET: 1983 /* try a reset, keep motor on */ 1984 fd_set_motor(fdc); 1985 delay(100); 1986 fdc->sc_nstat = 0; 1987 fdc->sc_itask = FDC_ITASK_SENSEI; 1988 fdc->sc_state = RESETCOMPLETE; 1989 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1990 fdc_reset(fdc); 1991 return 1; /* will return later */ 1992 1993 case RESETCOMPLETE: 1994 callout_stop(&fdc->sc_timo_ch); 1995 fdconf(fdc); 1996 1997 /* FALLTHROUGH */ 1998 case DORECAL: 1999 fdc->sc_state = RECALWAIT; 2000 fdc->sc_itask = FDC_ITASK_SENSEI; 2001 fdc->sc_nstat = 0; 2002 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 2003 /* recalibrate function */ 2004 FDC_WRFIFO(fdc, NE7CMD_RECAL); 2005 FDC_WRFIFO(fdc, fd->sc_drive); 2006 return 1; /* will return later */ 2007 2008 case RECALWAIT: 2009 callout_stop(&fdc->sc_timo_ch); 2010 fdc->sc_state = RECALCOMPLETE; 2011 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 2012 /* allow 1/30 second for heads to settle */ 2013 callout_reset(&fdc->sc_intr_ch, hz / 30, 2014 fdcpseudointr, fdc); 2015 return 1; /* will return later */ 2016 } 2017 2018 case RECALCOMPLETE: 2019 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 2020 #ifdef FD_DEBUG 2021 if (fdc_debug) 2022 fdcstatus(fdc, "recalibrate failed"); 2023 #endif 2024 fdcretry(fdc); 2025 goto loop; 2026 } 2027 fd->sc_cylin = 0; 2028 goto doseek; 2029 2030 case MOTORWAIT: 2031 if (fd->sc_flags & FD_MOTOR_WAIT) 2032 return 1; /* time's not up yet */ 2033 goto doseek; 2034 2035 default: 2036 fdcstatus(fdc, "stray interrupt"); 2037 return 1; 2038 } 2039 #ifdef DIAGNOSTIC 2040 panic("fdcintr: impossible"); 2041 #endif 2042 2043 xxx: 2044 /* 2045 * We get here if the chip locks up in FDC_WRFIFO() 2046 * Cancel any operation and schedule a reset 2047 */ 2048 callout_stop(&fdc->sc_timo_ch); 2049 fdcretry(fdc); 2050 fdc->sc_state = DORESET; 2051 goto loop; 2052 2053 #undef st0 2054 #undef st1 2055 #undef cyl 2056 } 2057 2058 void 2059 fdcretry(struct fdc_softc *fdc) 2060 { 2061 struct fd_softc *fd; 2062 struct buf *bp; 2063 int error = EIO; 2064 2065 fd = fdc->sc_drives.tqh_first; 2066 bp = bufq_peek(fd->sc_q); 2067 2068 fdc->sc_overruns = 0; 2069 if (fd->sc_opts & FDOPT_NORETRY) 2070 goto fail; 2071 2072 switch (fdc->sc_errors) { 2073 case 0: 2074 if (fdc->sc_nstat == 7 && 2075 (fdc->sc_status[0] & 0xd8) == 0x40 && 2076 (fdc->sc_status[1] & 0x2) == 0x2) { 2077 aprint_error_dev(fdc->sc_dev, "read-only medium\n"); 2078 error = EROFS; 2079 goto failsilent; 2080 } 2081 /* try again */ 2082 fdc->sc_state = 2083 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2084 break; 2085 2086 case 1: case 2: case 3: 2087 /* didn't work; try recalibrating */ 2088 fdc->sc_state = DORECAL; 2089 break; 2090 2091 case 4: 2092 if (fdc->sc_nstat == 7 && 2093 fdc->sc_status[0] == 0 && 2094 fdc->sc_status[1] == 0 && 2095 fdc->sc_status[2] == 0) { 2096 /* 2097 * We've retried a few times and we've got 2098 * valid status and all three status bytes 2099 * are zero. Assume this condition is the 2100 * result of no disk loaded into the drive. 2101 */ 2102 aprint_error_dev(fdc->sc_dev, "no medium?\n"); 2103 error = ENODEV; 2104 goto failsilent; 2105 } 2106 2107 /* still no go; reset the bastard */ 2108 fdc->sc_state = DORESET; 2109 break; 2110 2111 default: 2112 fail: 2113 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2114 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2115 fd->sc_skip / FD_BSIZE(fd), 2116 (struct disklabel *)NULL); 2117 printf("\n"); 2118 fdcstatus(fdc, "controller status"); 2119 } 2120 2121 failsilent: 2122 bp->b_error = error; 2123 fdfinish(fd, bp); 2124 } 2125 fdc->sc_errors++; 2126 } 2127 2128 int 2129 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2130 { 2131 struct fd_softc *fd; 2132 struct fdc_softc *fdc; 2133 struct fdformat_parms *form_parms; 2134 struct fdformat_cmd *form_cmd; 2135 struct ne7_fd_formb *fd_formb; 2136 int il[FD_MAX_NSEC + 1]; 2137 int unit; 2138 int i, j; 2139 int error; 2140 2141 unit = FDUNIT(dev); 2142 if (unit >= fd_cd.cd_ndevs) 2143 return ENXIO; 2144 2145 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2146 fdc = device_private(device_parent(fd->sc_dev)); 2147 2148 switch (cmd) { 2149 case DIOCGDINFO: 2150 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2151 return 0; 2152 2153 case DIOCWLABEL: 2154 if ((flag & FWRITE) == 0) 2155 return EBADF; 2156 /* XXX do something */ 2157 return 0; 2158 2159 case DIOCWDINFO: 2160 if ((flag & FWRITE) == 0) 2161 return EBADF; 2162 2163 error = setdisklabel(fd->sc_dk.dk_label, 2164 (struct disklabel *)addr, 0, 2165 fd->sc_dk.dk_cpulabel); 2166 if (error) 2167 return error; 2168 2169 error = writedisklabel(dev, fdstrategy, 2170 fd->sc_dk.dk_label, 2171 fd->sc_dk.dk_cpulabel); 2172 return error; 2173 2174 case DIOCLOCK: 2175 /* 2176 * Nothing to do here, really. 2177 */ 2178 return 0; 2179 2180 case DIOCEJECT: 2181 if (*(int *)addr == 0) { 2182 int part = DISKPART(dev); 2183 /* 2184 * Don't force eject: check that we are the only 2185 * partition open. If so, unlock it. 2186 */ 2187 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2188 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2189 fd->sc_dk.dk_openmask) { 2190 return EBUSY; 2191 } 2192 } 2193 /* FALLTHROUGH */ 2194 case ODIOCEJECT: 2195 if (fdc->sc_flags & FDC_NOEJECT) 2196 return EINVAL; 2197 fd_do_eject(fd); 2198 return 0; 2199 2200 case FDIOCGETFORMAT: 2201 form_parms = (struct fdformat_parms *)addr; 2202 form_parms->fdformat_version = FDFORMAT_VERSION; 2203 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2204 form_parms->ncyl = fd->sc_type->cylinders; 2205 form_parms->nspt = fd->sc_type->sectrac; 2206 form_parms->ntrk = fd->sc_type->heads; 2207 form_parms->stepspercyl = fd->sc_type->step; 2208 form_parms->gaplen = fd->sc_type->gap2; 2209 form_parms->fillbyte = fd->sc_type->fillbyte; 2210 form_parms->interleave = fd->sc_type->interleave; 2211 switch (fd->sc_type->rate) { 2212 case FDC_500KBPS: 2213 form_parms->xfer_rate = 500 * 1024; 2214 break; 2215 case FDC_300KBPS: 2216 form_parms->xfer_rate = 300 * 1024; 2217 break; 2218 case FDC_250KBPS: 2219 form_parms->xfer_rate = 250 * 1024; 2220 break; 2221 default: 2222 return EINVAL; 2223 } 2224 return 0; 2225 2226 case FDIOCSETFORMAT: 2227 if ((flag & FWRITE) == 0) 2228 return EBADF; /* must be opened for writing */ 2229 2230 form_parms = (struct fdformat_parms *)addr; 2231 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2232 return EINVAL;/* wrong version of formatting prog */ 2233 2234 i = form_parms->nbps >> 7; 2235 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2236 i & ~(1 << (ffs(i)-1))) 2237 /* not a power-of-two multiple of 128 */ 2238 return EINVAL; 2239 2240 switch (form_parms->xfer_rate) { 2241 case 500 * 1024: 2242 fd->sc_type->rate = FDC_500KBPS; 2243 break; 2244 case 300 * 1024: 2245 fd->sc_type->rate = FDC_300KBPS; 2246 break; 2247 case 250 * 1024: 2248 fd->sc_type->rate = FDC_250KBPS; 2249 break; 2250 default: 2251 return EINVAL; 2252 } 2253 2254 if (form_parms->nspt > FD_MAX_NSEC || 2255 form_parms->fillbyte > 0xff || 2256 form_parms->interleave > 0xff) 2257 return EINVAL; 2258 fd->sc_type->sectrac = form_parms->nspt; 2259 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2260 return EINVAL; 2261 fd->sc_type->heads = form_parms->ntrk; 2262 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2263 fd->sc_type->secsize = ffs(i)-1; 2264 fd->sc_type->gap2 = form_parms->gaplen; 2265 fd->sc_type->cylinders = form_parms->ncyl; 2266 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2267 form_parms->nbps / DEV_BSIZE; 2268 fd->sc_type->step = form_parms->stepspercyl; 2269 fd->sc_type->fillbyte = form_parms->fillbyte; 2270 fd->sc_type->interleave = form_parms->interleave; 2271 return 0; 2272 2273 case FDIOCFORMAT_TRACK: 2274 if((flag & FWRITE) == 0) 2275 /* must be opened for writing */ 2276 return EBADF; 2277 form_cmd = (struct fdformat_cmd *)addr; 2278 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2279 /* wrong version of formatting prog */ 2280 return EINVAL; 2281 2282 if (form_cmd->head >= fd->sc_type->heads || 2283 form_cmd->cylinder >= fd->sc_type->cylinders) { 2284 return EINVAL; 2285 } 2286 2287 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2288 M_TEMP, M_NOWAIT); 2289 if (fd_formb == 0) 2290 return ENOMEM; 2291 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 free(fd_formb, M_TEMP); 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(lp, 0, sizeof(struct cpu_disklabel)); 2434 2435 lp->d_type = DTYPE_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 = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 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
Indexes created Mon Sep 29 21:09:56 GMT 2025