fdc.c revision 1.40
1 /* $NetBSD: fdc.c,v 1.40 2014/07/25 08:02:18 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 1.40 2014/07/25 08:02:18 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_flag = D_DISK 364 }; 365 366 void fdgetdisklabel(dev_t); 367 int fd_get_parms(struct fd_softc *); 368 void fdstrategy(struct buf *); 369 void fdstart(struct fd_softc *); 370 int fdprint(void *, const char *); 371 372 struct dkdriver fddkdriver = { fdstrategy, NULL }; 373 374 struct fd_type *fd_nvtotype(char *, int, int); 375 void fd_set_motor(struct fdc_softc *); 376 void fd_motor_off(void *); 377 void fd_motor_on(void *); 378 int fdcresult(struct fdc_softc *); 379 int fdc_wrfifo(struct fdc_softc *, uint8_t); 380 void fdcstart(struct fdc_softc *); 381 void fdcstatus(struct fdc_softc *, const char *); 382 void fdc_reset(struct fdc_softc *); 383 int fdc_diskchange(struct fdc_softc *); 384 void fdctimeout(void *); 385 void fdcpseudointr(void *); 386 int fdc_c_hwintr(void *); 387 void fdchwintr(void); 388 void fdcswintr(void *); 389 int fdcstate(struct fdc_softc *); 390 void fdcretry(struct fdc_softc *); 391 void fdfinish(struct fd_softc *, struct buf *); 392 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 393 void fd_do_eject(struct fd_softc *); 394 void fd_mountroot_hook(device_t ); 395 static int fdconf(struct fdc_softc *); 396 static void establish_chip_type( 397 struct fdc_softc *, 398 bus_space_tag_t, 399 bus_addr_t, 400 bus_size_t, 401 bus_space_handle_t); 402 static void fd_set_geometry(struct fd_softc *); 403 404 #ifdef MEMORY_DISK_HOOKS 405 int fd_read_md_image(size_t *, void **); 406 #endif 407 408 #ifdef SUN4 409 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 410 411 int 412 fdcmatch_mainbus(device_t parent, cfdata_t match, void *aux) 413 { 414 struct mainbus_attach_args *ma = aux; 415 416 /* 417 * Floppy controller is on mainbus on sun4c. 418 */ 419 if (!CPU_ISSUN4C) 420 return 0; 421 422 /* sun4c PROMs call the controller "fd" */ 423 if (strcmp("fd", ma->ma_name) != 0) 424 return 0; 425 426 return bus_space_probe(ma->ma_bustag, 427 ma->ma_paddr, 428 1, /* probe size */ 429 0, /* offset */ 430 0, /* flags */ 431 NULL, NULL); 432 } 433 434 int 435 fdcmatch_obio(device_t parent, cfdata_t match, void *aux) 436 { 437 union obio_attach_args *uoba = aux; 438 struct sbus_attach_args *sa; 439 440 /* 441 * Floppy controller is on obio on sun4m. 442 */ 443 if (uoba->uoba_isobio4 != 0) 444 return 0; 445 446 sa = &uoba->uoba_sbus; 447 448 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 449 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 450 return 0; 451 452 return bus_space_probe(sa->sa_bustag, 453 sbus_bus_addr(sa->sa_bustag, 454 sa->sa_slot, sa->sa_offset), 455 1, /* probe size */ 456 0, /* offset */ 457 0, /* flags */ 458 NULL, NULL); 459 } 460 461 #elif SUN4U 462 463 int 464 fdcmatch_sbus(device_t parent, cfdata_t match, void *aux) 465 { 466 struct sbus_attach_args *sa = aux; 467 468 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 469 } 470 471 int 472 fdcmatch_ebus(device_t parent, cfdata_t match, void *aux) 473 { 474 struct ebus_attach_args *ea = aux; 475 476 return strcmp("fdthree", ea->ea_name) == 0; 477 } 478 #endif 479 480 static void 481 establish_chip_type(struct fdc_softc *fdc, 482 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 483 bus_space_handle_t handle) 484 { 485 uint8_t v; 486 487 /* 488 * This hack from Chris Torek: apparently DOR really 489 * addresses MSR/DRS on a 82072. 490 * We used to rely on the VERSION command to tell the 491 * difference (which did not work). 492 */ 493 494 /* First, check the size of the register bank */ 495 if (size < 8) 496 /* It isn't a 82077 */ 497 return; 498 499 #ifdef SUN4 500 /* Then probe the DOR register offset */ 501 if (bus_space_probe(tag, addr, 502 1, /* probe size */ 503 FDREG77_DOR, /* offset */ 504 0, /* flags */ 505 NULL, NULL) == 0) { 506 507 /* It isn't a 82077 */ 508 return; 509 } 510 #endif 511 512 v = bus_space_read_1(tag, handle, FDREG77_DOR); 513 if (v == NE7_RQM) { 514 /* 515 * Value in DOR looks like it's really MSR 516 */ 517 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 518 v = bus_space_read_1(tag, handle, FDREG77_DOR); 519 if (v == NE7_RQM) { 520 /* 521 * The value in the DOR didn't stick; 522 * it isn't a 82077 523 */ 524 return; 525 } 526 } 527 528 fdc->sc_flags |= FDC_82077; 529 } 530 531 /* 532 * Arguments passed between fdcattach and fdprobe. 533 */ 534 struct fdc_attach_args { 535 int fa_drive; 536 struct fd_type *fa_deftype; 537 }; 538 539 /* 540 * Print the location of a disk drive (called just before attaching the 541 * the drive). If `fdc' is not NULL, the drive was found but was not 542 * in the system config file; print the drive name as well. 543 * Return QUIET (config_find ignores this if the device was configured) to 544 * avoid printing `fdN not configured' messages. 545 */ 546 int 547 fdprint(void *aux, const char *fdc) 548 { 549 register struct fdc_attach_args *fa = aux; 550 551 if (!fdc) 552 aprint_normal(" drive %d", fa->fa_drive); 553 return QUIET; 554 } 555 556 /* 557 * Configure several parameters and features on the FDC. 558 * Return 0 on success. 559 */ 560 static int 561 fdconf(struct fdc_softc *fdc) 562 { 563 int vroom; 564 565 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 566 return -1; 567 568 /* 569 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 570 * the PROM thinks is appropriate. 571 */ 572 if ((vroom = fdc->sc_status[7]) == 0) 573 vroom = 0x64; 574 575 /* Configure controller to use FIFO and Implied Seek */ 576 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 577 return -1; 578 if (fdc_wrfifo(fdc, vroom) != 0) 579 return -1; 580 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 581 return -1; 582 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 583 return -1; 584 /* No result phase for the NE7CMD_CFG command */ 585 586 if ((fdc->sc_flags & FDC_82077) != 0) { 587 /* Lock configuration across soft resets. */ 588 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 589 fdcresult(fdc) != 1) { 590 #ifdef DEBUG 591 printf("fdconf: CFGLOCK failed"); 592 #endif 593 return -1; 594 } 595 } 596 597 return 0; 598 #if 0 599 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 600 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 601 if (fdc_debug) 602 printf("[version cmd]"); 603 } 604 #endif 605 } 606 607 #ifdef SUN4 608 void 609 fdcattach_mainbus(device_t parent, device_t self, void *aux) 610 { 611 struct fdc_softc *fdc = device_private(self); 612 struct mainbus_attach_args *ma = aux; 613 614 fdc->sc_dev = self; 615 fdc->sc_bustag = ma->ma_bustag; 616 617 if (bus_space_map( 618 ma->ma_bustag, 619 ma->ma_paddr, 620 ma->ma_size, 621 BUS_SPACE_MAP_LINEAR, 622 &fdc->sc_handle) != 0) { 623 aprint_error_dev(self, "cannot map registers\n"); 624 return; 625 } 626 627 establish_chip_type(fdc, 628 ma->ma_bustag, 629 ma->ma_paddr, 630 ma->ma_size, 631 fdc->sc_handle); 632 633 if (fdcattach(fdc, ma->ma_pri) != 0) 634 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 635 } 636 637 void 638 fdcattach_obio(device_t parent, device_t self, void *aux) 639 { 640 struct fdc_softc *fdc = device_private(self); 641 union obio_attach_args *uoba = aux; 642 struct sbus_attach_args *sa = &uoba->uoba_sbus; 643 644 if (sa->sa_nintr == 0) { 645 printf(": no interrupt line configured\n"); 646 return; 647 } 648 649 fdc->sc_dev = self; 650 fdc->sc_bustag = sa->sa_bustag; 651 652 if (sbus_bus_map(sa->sa_bustag, 653 sa->sa_slot, sa->sa_offset, sa->sa_size, 654 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 655 aprint_error_dev(self, "cannot map control registers\n"); 656 return; 657 } 658 659 establish_chip_type(fdc, 660 sa->sa_bustag, 661 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 662 sa->sa_size, 663 fdc->sc_handle); 664 665 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 666 printf(": no drives attached\n"); 667 return; 668 } 669 670 if (fdcattach(fdc, sa->sa_pri) != 0) 671 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 672 } 673 674 #elif SUN4U 675 676 void 677 fdcattach_sbus(device_t parent, device_t self, void *aux) 678 { 679 struct fdc_softc *fdc = device_private(self); 680 struct sbus_attach_args *sa = aux; 681 682 if (sa->sa_nintr == 0) { 683 printf(": no interrupt line configured\n"); 684 return; 685 } 686 687 if (auxio_fd_control(0) != 0) { 688 printf(": can't attach before auxio\n"); 689 return; 690 } 691 692 fdc->sc_dev = self; 693 fdc->sc_bustag = sa->sa_bustag; 694 695 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 696 sa->sa_size, 0, &fdc->sc_handle) != 0) { 697 printf(": cannot map control registers\n"); 698 return; 699 } 700 701 establish_chip_type(fdc, 702 sa->sa_bustag, 703 BUS_ADDR(sa->sa_slot, sa->sa_offset), 704 sa->sa_size, 705 fdc->sc_handle); 706 707 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 708 printf(": no drives attached\n"); 709 return; 710 } 711 712 if (prom_getproplen(sa->sa_node, "manual") >= 0) 713 fdc->sc_flags |= FDC_NOEJECT; 714 715 716 if (fdcattach(fdc, sa->sa_pri) != 0) 717 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 718 } 719 720 void 721 fdcattach_ebus(device_t parent, device_t self, void *aux) 722 { 723 struct fdc_softc *fdc = device_private(self); 724 struct ebus_attach_args *ea = aux; 725 int map_vaddr; 726 727 if (ea->ea_nintr == 0) { 728 printf(": no interrupt line configured\n"); 729 return; 730 } 731 732 if (ea->ea_nreg < 3) { 733 printf(": expected 3 registers, only got %d\n", 734 ea->ea_nreg); 735 return; 736 } 737 738 fdc->sc_dev = self; 739 fdc->sc_bustag = ea->ea_bustag; 740 741 if (ea->ea_nvaddr > 0) { 742 sparc_promaddr_to_handle(ea->ea_bustag, 743 ea->ea_vaddr[0], &fdc->sc_handle); 744 map_vaddr = 1; 745 } else if (bus_space_map(fdc->sc_bustag, 746 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 747 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 748 map_vaddr = 0; 749 } else { 750 printf(": can't map control registers\n"); 751 return; 752 } 753 754 establish_chip_type(fdc, 755 fdc->sc_bustag, 756 map_vaddr ? ea->ea_vaddr[0] : 757 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 758 ea->ea_reg[0].size, 759 fdc->sc_handle); 760 761 fdc->sc_flags |= FDC_EBUS; 762 763 if (prom_getproplen(ea->ea_node, "manual") >= 0) 764 fdc->sc_flags |= FDC_NOEJECT; 765 766 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 767 if (map_vaddr == 0) 768 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 769 ea->ea_reg[0].size); 770 } 771 #endif 772 773 int 774 fdcattach(struct fdc_softc *fdc, int pri) 775 { 776 struct fdc_attach_args fa; 777 int drive_attached; 778 char code; 779 780 callout_init(&fdc->sc_timo_ch, 0); 781 callout_init(&fdc->sc_intr_ch, 0); 782 783 fdc->sc_state = DEVIDLE; 784 fdc->sc_itask = FDC_ITASK_NONE; 785 fdc->sc_istatus = FDC_ISTATUS_NONE; 786 fdc->sc_flags |= FDC_EIS; 787 TAILQ_INIT(&fdc->sc_drives); 788 789 if ((fdc->sc_flags & FDC_82077) != 0) { 790 fdc->sc_reg_msr = FDREG77_MSR; 791 fdc->sc_reg_fifo = FDREG77_FIFO; 792 fdc->sc_reg_dor = FDREG77_DOR; 793 fdc->sc_reg_dir = FDREG77_DIR; 794 code = '7'; 795 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 796 } else { 797 fdc->sc_reg_msr = FDREG72_MSR; 798 fdc->sc_reg_fifo = FDREG72_FIFO; 799 fdc->sc_reg_dor = 0; 800 code = '2'; 801 } 802 803 /* 804 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 805 * Note: CFG_EFIFO is active-low, initial threshold value: 8 806 */ 807 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 808 if (fdconf(fdc) != 0) { 809 printf(": no drives attached\n"); 810 return -1; 811 } 812 813 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 814 if (fdc->sc_sicookie == NULL) { 815 aprint_normal("\n"); 816 aprint_error_dev(fdc->sc_dev, 817 "cannot register soft interrupt handler\n"); 818 callout_stop(&fdc->sc_timo_ch); 819 callout_stop(&fdc->sc_intr_ch); 820 return -1; 821 } 822 #ifdef SUN4 823 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 824 #elif SUN4U 825 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 826 if (fdc->sc_flags & FDC_NOEJECT) 827 printf(": manual eject"); 828 printf("\n"); 829 #endif 830 831 #ifdef SUN4 832 fdciop = &fdc->sc_io; 833 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 834 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 835 #elif SUN4U 836 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 837 fdc_c_hwintr, fdc) == NULL) { 838 #endif 839 aprint_normal("\n"); 840 aprint_error_dev(fdc->sc_dev, 841 "cannot register interrupt handler\n"); 842 callout_stop(&fdc->sc_timo_ch); 843 callout_stop(&fdc->sc_intr_ch); 844 softint_disestablish(fdc->sc_sicookie); 845 return -1; 846 } 847 848 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 849 device_xname(fdc->sc_dev), "intr"); 850 851 /* physical limit: four drives per controller. */ 852 drive_attached = 0; 853 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 854 fa.fa_deftype = NULL; /* unknown */ 855 fa.fa_deftype = &fd_types[0]; /* XXX */ 856 if (config_found(fdc->sc_dev, (void *)&fa, fdprint) != NULL) 857 drive_attached = 1; 858 } 859 860 if (drive_attached == 0) { 861 /* XXX - dis-establish interrupts here */ 862 /* return -1; */ 863 } 864 865 return 0; 866 } 867 868 int 869 fdmatch(device_t parent, cfdata_t match, void *aux) 870 { 871 struct fdc_softc *fdc = device_private(parent); 872 bus_space_tag_t t = fdc->sc_bustag; 873 bus_space_handle_t h = fdc->sc_handle; 874 struct fdc_attach_args *fa = aux; 875 int drive = fa->fa_drive; 876 int n, ok; 877 878 if (drive > 0) 879 /* XXX - for now, punt on more than one drive */ 880 return 0; 881 882 if ((fdc->sc_flags & FDC_82077) != 0) { 883 /* select drive and turn on motor */ 884 bus_space_write_1(t, h, fdc->sc_reg_dor, 885 drive | FDO_FRST | FDO_MOEN(drive)); 886 /* wait for motor to spin up */ 887 delay(250000); 888 #ifdef SUN4 889 } else { 890 auxregbisc(AUXIO4C_FDS, 0); 891 #endif 892 } 893 fdc->sc_nstat = 0; 894 fdc_wrfifo(fdc, NE7CMD_RECAL); 895 fdc_wrfifo(fdc, drive); 896 897 /* Wait for recalibration to complete */ 898 for (n = 0; n < 10000; n++) { 899 uint8_t v; 900 901 delay(1000); 902 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 903 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 904 /* wait a bit longer till device *really* is ready */ 905 delay(100000); 906 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 907 break; 908 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 909 /* 910 * Got `invalid command'; we interpret it 911 * to mean that the re-calibrate hasn't in 912 * fact finished yet 913 */ 914 continue; 915 break; 916 } 917 } 918 n = fdc->sc_nstat; 919 #ifdef FD_DEBUG 920 if (fdc_debug) { 921 int i; 922 printf("fdprobe: %d stati:", n); 923 for (i = 0; i < n; i++) 924 printf(" 0x%x", fdc->sc_status[i]); 925 printf("\n"); 926 } 927 #endif 928 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 929 930 /* turn off motor */ 931 if ((fdc->sc_flags & FDC_82077) != 0) { 932 /* deselect drive and turn motor off */ 933 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 934 #ifdef SUN4 935 } else { 936 auxregbisc(0, AUXIO4C_FDS); 937 #endif 938 } 939 940 return ok; 941 } 942 943 /* 944 * Controller is working, and drive responded. Attach it. 945 */ 946 void 947 fdattach(device_t parent, device_t self, void *aux) 948 { 949 struct fdc_softc *fdc = device_private(parent); 950 struct fd_softc *fd = device_private(self); 951 struct fdc_attach_args *fa = aux; 952 struct fd_type *type = fa->fa_deftype; 953 int drive = fa->fa_drive; 954 955 fd->sc_dev = self; 956 callout_init(&fd->sc_motoron_ch, 0); 957 callout_init(&fd->sc_motoroff_ch, 0); 958 959 /* XXX Allow `flags' to override device type? */ 960 961 if (type) 962 printf(": %s %d cyl, %d head, %d sec\n", type->name, 963 type->cylinders, type->heads, type->sectrac); 964 else 965 printf(": density unknown\n"); 966 967 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 968 fd->sc_cylin = -1; 969 fd->sc_drive = drive; 970 fd->sc_deftype = type; 971 fdc->sc_fd[drive] = fd; 972 973 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 974 fdc_wrfifo(fdc, type->steprate); 975 /* XXX head load time == 6ms */ 976 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 977 978 /* 979 * Initialize and attach the disk structure. 980 */ 981 disk_init(&fd->sc_dk, device_xname(fd->sc_dev), &fddkdriver); 982 disk_attach(&fd->sc_dk); 983 984 /* 985 * Establish a mountroot_hook anyway in case we booted 986 * with RB_ASKNAME and get selected as the boot device. 987 */ 988 mountroothook_establish(fd_mountroot_hook, fd->sc_dev); 989 990 fd_set_geometry(fd); 991 992 /* Make sure the drive motor gets turned off at shutdown time. */ 993 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 994 aprint_error_dev(self, "couldn't establish power handler\n"); 995 } 996 997 bool fdshutdown(device_t self, int how) 998 { 999 struct fd_softc *fd = device_private(self); 1000 1001 fd_motor_off(fd); 1002 return true; 1003 } 1004 1005 bool fdsuspend(device_t self, const pmf_qual_t *qual) 1006 { 1007 1008 return fdshutdown(self, boothowto); 1009 } 1010 1011 1012 static inline struct fd_type * 1013 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 1014 { 1015 int type = FDTYPE(dev); 1016 1017 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 1018 return NULL; 1019 return type ? &fd_types[type - 1] : fd->sc_deftype; 1020 } 1021 1022 void 1023 fdstrategy(struct buf *bp) 1024 { 1025 struct fd_softc *fd; 1026 int sz; 1027 int s; 1028 1029 /* Valid unit, controller, and request? */ 1030 fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 1031 if (fd == NULL) { 1032 bp->b_error = EINVAL; 1033 goto done; 1034 } 1035 1036 if (bp->b_blkno < 0 || 1037 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1038 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1039 (bp->b_flags & B_FORMAT) == 0)) { 1040 bp->b_error = EINVAL; 1041 goto done; 1042 } 1043 1044 /* If it's a null transfer, return immediately. */ 1045 if (bp->b_bcount == 0) 1046 goto done; 1047 1048 sz = howmany(bp->b_bcount, DEV_BSIZE); 1049 1050 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1051 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1052 - bp->b_blkno; 1053 if (sz == 0) { 1054 /* If exactly at end of disk, return EOF. */ 1055 bp->b_resid = bp->b_bcount; 1056 goto done; 1057 } 1058 if (sz < 0) { 1059 /* If past end of disk, return EINVAL. */ 1060 bp->b_error = EINVAL; 1061 goto done; 1062 } 1063 /* Otherwise, truncate request. */ 1064 bp->b_bcount = sz << DEV_BSHIFT; 1065 } 1066 1067 bp->b_rawblkno = bp->b_blkno; 1068 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1069 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1070 1071 #ifdef FD_DEBUG 1072 if (fdc_debug > 1) 1073 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1074 (long long)bp->b_blkno, bp->b_bcount, 1075 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1076 #endif 1077 1078 /* Queue transfer on drive, activate drive and controller if idle. */ 1079 s = splbio(); 1080 bufq_put(fd->sc_q, bp); 1081 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1082 if (fd->sc_active == 0) 1083 fdstart(fd); 1084 #ifdef DIAGNOSTIC 1085 else { 1086 struct fdc_softc *fdc = device_private( 1087 device_parent(fd->sc_dev)); 1088 if (fdc->sc_state == DEVIDLE) { 1089 printf("fdstrategy: controller inactive\n"); 1090 fdcstart(fdc); 1091 } 1092 } 1093 #endif 1094 splx(s); 1095 return; 1096 1097 done: 1098 /* Toss transfer; we're done early. */ 1099 biodone(bp); 1100 } 1101 1102 void 1103 fdstart(struct fd_softc *fd) 1104 { 1105 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1106 int active = fdc->sc_drives.tqh_first != 0; 1107 1108 /* Link into controller queue. */ 1109 fd->sc_active = 1; 1110 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1111 1112 /* If controller not already active, start it. */ 1113 if (!active) 1114 fdcstart(fdc); 1115 } 1116 1117 void 1118 fdfinish(struct fd_softc *fd, struct buf *bp) 1119 { 1120 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1121 1122 /* 1123 * Move this drive to the end of the queue to give others a `fair' 1124 * chance. We only force a switch if N operations are completed while 1125 * another drive is waiting to be serviced, since there is a long motor 1126 * startup delay whenever we switch. 1127 */ 1128 (void)bufq_get(fd->sc_q); 1129 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1130 fd->sc_ops = 0; 1131 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1132 if (bufq_peek(fd->sc_q) != NULL) { 1133 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1134 } else 1135 fd->sc_active = 0; 1136 } 1137 bp->b_resid = fd->sc_bcount; 1138 fd->sc_skip = 0; 1139 1140 biodone(bp); 1141 /* turn off motor 5s from now */ 1142 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1143 fdc->sc_state = DEVIDLE; 1144 } 1145 1146 void 1147 fdc_reset(struct fdc_softc *fdc) 1148 { 1149 bus_space_tag_t t = fdc->sc_bustag; 1150 bus_space_handle_t h = fdc->sc_handle; 1151 1152 if ((fdc->sc_flags & FDC_82077) != 0) { 1153 bus_space_write_1(t, h, fdc->sc_reg_dor, 1154 FDO_FDMAEN | FDO_MOEN(0)); 1155 } 1156 1157 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1158 delay(10); 1159 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1160 1161 if ((fdc->sc_flags & FDC_82077) != 0) { 1162 bus_space_write_1(t, h, fdc->sc_reg_dor, 1163 FDO_FRST | FDO_FDMAEN | FDO_DS); 1164 } 1165 #ifdef FD_DEBUG 1166 if (fdc_debug) 1167 printf("fdc reset\n"); 1168 #endif 1169 } 1170 1171 void 1172 fd_set_motor(struct fdc_softc *fdc) 1173 { 1174 struct fd_softc *fd; 1175 u_char status; 1176 int n; 1177 1178 if ((fdc->sc_flags & FDC_82077) != 0) { 1179 status = FDO_FRST | FDO_FDMAEN; 1180 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1181 status |= fd->sc_drive; 1182 1183 for (n = 0; n < 4; n++) 1184 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1185 status |= FDO_MOEN(n); 1186 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1187 fdc->sc_reg_dor, status); 1188 #ifdef SUN4 1189 } else { 1190 1191 for (n = 0; n < 4; n++) { 1192 if ((fd = fdc->sc_fd[n]) != NULL && 1193 (fd->sc_flags & FD_MOTOR) != 0) { 1194 auxregbisc(AUXIO4C_FDS, 0); 1195 return; 1196 } 1197 } 1198 auxregbisc(0, AUXIO4C_FDS); 1199 #endif 1200 } 1201 } 1202 1203 void 1204 fd_motor_off(void *arg) 1205 { 1206 struct fd_softc *fd = arg; 1207 int s; 1208 1209 s = splbio(); 1210 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1211 fd_set_motor(device_private(device_parent(fd->sc_dev))); 1212 splx(s); 1213 } 1214 1215 void 1216 fd_motor_on(void *arg) 1217 { 1218 struct fd_softc *fd = arg; 1219 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1220 int s; 1221 1222 s = splbio(); 1223 fd->sc_flags &= ~FD_MOTOR_WAIT; 1224 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1225 (void)fdcstate(fdc); 1226 splx(s); 1227 } 1228 1229 /* 1230 * Get status bytes off the FDC after a command has finished 1231 * Returns the number of status bytes read; -1 on error. 1232 * The return value is also stored in `sc_nstat'. 1233 */ 1234 int 1235 fdcresult(struct fdc_softc *fdc) 1236 { 1237 bus_space_tag_t t = fdc->sc_bustag; 1238 bus_space_handle_t h = fdc->sc_handle; 1239 int j, n = 0; 1240 1241 for (j = 10000; j; j--) { 1242 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1243 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1244 if (v == NE7_RQM) 1245 return fdc->sc_nstat = n; 1246 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1247 if (n >= sizeof(fdc->sc_status)) { 1248 log(LOG_ERR, "fdcresult: overrun\n"); 1249 return -1; 1250 } 1251 fdc->sc_status[n++] = 1252 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1253 } else 1254 delay(1); 1255 } 1256 1257 log(LOG_ERR, "fdcresult: timeout\n"); 1258 return fdc->sc_nstat = -1; 1259 } 1260 1261 /* 1262 * Write a command byte to the FDC. 1263 * Returns 0 on success; -1 on failure (i.e. timeout) 1264 */ 1265 int 1266 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1267 { 1268 bus_space_tag_t t = fdc->sc_bustag; 1269 bus_space_handle_t h = fdc->sc_handle; 1270 int i; 1271 1272 for (i = 100000; i-- > 0;) { 1273 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1274 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1275 /* The chip is ready */ 1276 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1277 return 0; 1278 } 1279 delay(1); 1280 } 1281 return -1; 1282 } 1283 1284 int 1285 fdc_diskchange(struct fdc_softc *fdc) 1286 { 1287 1288 #ifdef SUN4 1289 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1290 #endif 1291 bus_space_tag_t t = fdc->sc_bustag; 1292 bus_space_handle_t h = fdc->sc_handle; 1293 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1294 return (v & FDI_DCHG) != 0; 1295 #ifdef SUN4 1296 } else if (CPU_ISSUN4C) { 1297 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1298 } 1299 return 0; 1300 #endif 1301 } 1302 1303 int 1304 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1305 { 1306 int pmask; 1307 struct fd_softc *fd; 1308 struct fd_type *type; 1309 1310 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1311 if (fd == NULL) 1312 return ENXIO; 1313 type = fd_dev_to_type(fd, dev); 1314 if (type == NULL) 1315 return ENXIO; 1316 1317 if ((fd->sc_flags & FD_OPEN) != 0 && 1318 fd->sc_type != type) 1319 return EBUSY; 1320 1321 fd->sc_type = type; 1322 fd->sc_cylin = -1; 1323 fd->sc_flags |= FD_OPEN; 1324 1325 /* 1326 * Only update the disklabel if we're not open anywhere else. 1327 */ 1328 if (fd->sc_dk.dk_openmask == 0) 1329 fdgetdisklabel(dev); 1330 1331 pmask = (1 << DISKPART(dev)); 1332 1333 switch (fmt) { 1334 case S_IFCHR: 1335 fd->sc_dk.dk_copenmask |= pmask; 1336 break; 1337 1338 case S_IFBLK: 1339 fd->sc_dk.dk_bopenmask |= pmask; 1340 break; 1341 } 1342 fd->sc_dk.dk_openmask = 1343 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1344 1345 return 0; 1346 } 1347 1348 int 1349 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1350 { 1351 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1352 int pmask = (1 << DISKPART(dev)); 1353 1354 fd->sc_flags &= ~FD_OPEN; 1355 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1356 1357 switch (fmt) { 1358 case S_IFCHR: 1359 fd->sc_dk.dk_copenmask &= ~pmask; 1360 break; 1361 1362 case S_IFBLK: 1363 fd->sc_dk.dk_bopenmask &= ~pmask; 1364 break; 1365 } 1366 fd->sc_dk.dk_openmask = 1367 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1368 1369 return 0; 1370 } 1371 1372 int 1373 fdread(dev_t dev, struct uio *uio, int flag) 1374 { 1375 1376 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1377 } 1378 1379 int 1380 fdwrite(dev_t dev, struct uio *uio, int flag) 1381 { 1382 1383 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1384 } 1385 1386 void 1387 fdcstart(struct fdc_softc *fdc) 1388 { 1389 1390 #ifdef DIAGNOSTIC 1391 /* only got here if controller's drive queue was inactive; should 1392 be in idle state */ 1393 if (fdc->sc_state != DEVIDLE) { 1394 printf("fdcstart: not idle\n"); 1395 return; 1396 } 1397 #endif 1398 (void)fdcstate(fdc); 1399 } 1400 1401 static void 1402 fdcpstatus(struct fdc_softc *fdc) 1403 { 1404 char bits[64]; 1405 1406 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1407 printf(" (st0 %s", bits); 1408 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1409 printf(" st1 %s", bits); 1410 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1411 printf(" st2 %s", bits); 1412 printf(" cyl %d head %d sec %d)\n", 1413 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1414 } 1415 1416 void 1417 fdcstatus(struct fdc_softc *fdc, const char *s) 1418 { 1419 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1420 int n; 1421 char bits[64]; 1422 1423 /* Just print last status */ 1424 n = fdc->sc_nstat; 1425 1426 #if 0 1427 /* 1428 * A 82072 seems to return <invalid command> on 1429 * gratuitous Sense Interrupt commands. 1430 */ 1431 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1432 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1433 (void)fdcresult(fdc); 1434 n = 2; 1435 } 1436 #endif 1437 1438 printf("%s: %s: state %d", 1439 fd ? device_xname(fd->sc_dev) : "fdc", s, fdc->sc_state); 1440 1441 switch (n) { 1442 case 0: 1443 printf("\n"); 1444 break; 1445 case 2: 1446 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1447 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1448 break; 1449 case 7: 1450 fdcpstatus(fdc); 1451 break; 1452 #ifdef DIAGNOSTIC 1453 default: 1454 printf(" fdcstatus: weird size: %d\n", n); 1455 break; 1456 #endif 1457 } 1458 } 1459 1460 void 1461 fdctimeout(void *arg) 1462 { 1463 struct fdc_softc *fdc = arg; 1464 struct fd_softc *fd; 1465 int s; 1466 1467 s = splbio(); 1468 fd = fdc->sc_drives.tqh_first; 1469 if (fd == NULL) { 1470 aprint_error_dev(fdc->sc_dev, "timeout but no I/O pending: state %d, istatus=%d\n", 1471 fdc->sc_state, fdc->sc_istatus); 1472 fdc->sc_state = DEVIDLE; 1473 goto out; 1474 } 1475 1476 if (bufq_peek(fd->sc_q) != NULL) 1477 fdc->sc_state++; 1478 else 1479 fdc->sc_state = DEVIDLE; 1480 1481 (void)fdcstate(fdc); 1482 out: 1483 splx(s); 1484 1485 } 1486 1487 void 1488 fdcpseudointr(void *arg) 1489 { 1490 struct fdc_softc *fdc = arg; 1491 int s; 1492 1493 /* Just ensure it has the right spl. */ 1494 s = splbio(); 1495 (void)fdcstate(fdc); 1496 splx(s); 1497 } 1498 1499 1500 /* 1501 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1502 * handler is available. Unfortunately, we have no reliable way to 1503 * determine that the interrupt really came from the floppy controller; 1504 * just hope that the other devices that share this interrupt level 1505 * can do better.. 1506 */ 1507 int 1508 fdc_c_hwintr(void *arg) 1509 { 1510 struct fdc_softc *fdc = arg; 1511 bus_space_tag_t t = fdc->sc_bustag; 1512 bus_space_handle_t h = fdc->sc_handle; 1513 1514 switch (fdc->sc_itask) { 1515 case FDC_ITASK_NONE: 1516 return 0; 1517 case FDC_ITASK_SENSEI: 1518 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1519 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1520 else 1521 fdc->sc_istatus = FDC_ISTATUS_DONE; 1522 softint_schedule(fdc->sc_sicookie); 1523 return 1; 1524 case FDC_ITASK_RESULT: 1525 if (fdcresult(fdc) == -1) 1526 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1527 else 1528 fdc->sc_istatus = FDC_ISTATUS_DONE; 1529 softint_schedule(fdc->sc_sicookie); 1530 return 1; 1531 case FDC_ITASK_DMA: 1532 /* Proceed with pseudo-DMA below */ 1533 break; 1534 default: 1535 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1536 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1537 softint_schedule(fdc->sc_sicookie); 1538 return 1; 1539 } 1540 1541 /* 1542 * Pseudo DMA in progress 1543 */ 1544 for (;;) { 1545 uint8_t msr; 1546 1547 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1548 1549 if ((msr & NE7_RQM) == 0) 1550 /* That's all this round. */ 1551 break; 1552 1553 if ((msr & NE7_NDM) == 0) { 1554 /* Execution phase finished, get result. */ 1555 fdcresult(fdc); 1556 fdc->sc_istatus = FDC_ISTATUS_DONE; 1557 softint_schedule(fdc->sc_sicookie); 1558 break; 1559 } 1560 1561 if (fdc->sc_tc == 0) 1562 /* For some reason the controller wants to transfer 1563 more data then what we want to transfer. */ 1564 panic("fdc: overrun"); 1565 1566 /* Another byte can be transferred */ 1567 if ((msr & NE7_DIO) != 0) 1568 *fdc->sc_data = 1569 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1570 else 1571 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1572 *fdc->sc_data); 1573 1574 fdc->sc_data++; 1575 if (--fdc->sc_tc == 0) { 1576 FTC_FLIP; 1577 break; 1578 } 1579 } 1580 return 1; 1581 } 1582 1583 void 1584 fdcswintr(void *arg) 1585 { 1586 struct fdc_softc *fdc = arg; 1587 1588 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1589 /* This (software) interrupt is not for us */ 1590 return; 1591 1592 switch (fdc->sc_istatus) { 1593 case FDC_ISTATUS_ERROR: 1594 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1595 break; 1596 case FDC_ISTATUS_SPURIOUS: 1597 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1598 break; 1599 } 1600 1601 fdcstate(fdc); 1602 return; 1603 } 1604 1605 int 1606 fdcstate(struct fdc_softc *fdc) 1607 { 1608 1609 #define st0 fdc->sc_status[0] 1610 #define st1 fdc->sc_status[1] 1611 #define cyl fdc->sc_status[1] 1612 #define FDC_WRFIFO(fdc, c) do { \ 1613 if (fdc_wrfifo(fdc, (c))) { \ 1614 goto xxx; \ 1615 } \ 1616 } while(0) 1617 1618 struct fd_softc *fd; 1619 struct buf *bp; 1620 int read, head, sec, nblks; 1621 struct fd_type *type; 1622 struct ne7_fd_formb *finfo = NULL; 1623 1624 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1625 /* Prevent loop if the reset sequence produces errors */ 1626 if (fdc->sc_state != RESETCOMPLETE && 1627 fdc->sc_state != RECALWAIT && 1628 fdc->sc_state != RECALCOMPLETE) 1629 fdc->sc_state = DORESET; 1630 } 1631 1632 /* Clear I task/status field */ 1633 fdc->sc_istatus = FDC_ISTATUS_NONE; 1634 fdc->sc_itask = FDC_ITASK_NONE; 1635 1636 loop: 1637 /* Is there a drive for the controller to do a transfer with? */ 1638 fd = fdc->sc_drives.tqh_first; 1639 if (fd == NULL) { 1640 fdc->sc_state = DEVIDLE; 1641 return 0; 1642 } 1643 1644 /* Is there a transfer to this drive? If not, deactivate drive. */ 1645 bp = bufq_peek(fd->sc_q); 1646 if (bp == NULL) { 1647 fd->sc_ops = 0; 1648 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1649 fd->sc_active = 0; 1650 goto loop; 1651 } 1652 1653 if (bp->b_flags & B_FORMAT) 1654 finfo = (struct ne7_fd_formb *)bp->b_data; 1655 1656 switch (fdc->sc_state) { 1657 case DEVIDLE: 1658 fdc->sc_errors = 0; 1659 fd->sc_skip = 0; 1660 fd->sc_bcount = bp->b_bcount; 1661 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1662 callout_stop(&fd->sc_motoroff_ch); 1663 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1664 fdc->sc_state = MOTORWAIT; 1665 return 1; 1666 } 1667 if ((fd->sc_flags & FD_MOTOR) == 0) { 1668 /* Turn on the motor, being careful about pairing. */ 1669 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1670 if (ofd && ofd->sc_flags & FD_MOTOR) { 1671 callout_stop(&ofd->sc_motoroff_ch); 1672 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1673 } 1674 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1675 fd_set_motor(fdc); 1676 fdc->sc_state = MOTORWAIT; 1677 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1678 /* Allow .25s for motor to stabilize. */ 1679 callout_reset(&fd->sc_motoron_ch, hz / 4, 1680 fd_motor_on, fd); 1681 } else { 1682 fd->sc_flags &= ~FD_MOTOR_WAIT; 1683 goto loop; 1684 } 1685 return 1; 1686 } 1687 /* Make sure the right drive is selected. */ 1688 fd_set_motor(fdc); 1689 1690 if (fdc_diskchange(fdc)) 1691 goto dodskchg; 1692 1693 /*FALLTHROUGH*/ 1694 case DOSEEK: 1695 doseek: 1696 if ((fdc->sc_flags & FDC_EIS) && 1697 (bp->b_flags & B_FORMAT) == 0) { 1698 fd->sc_cylin = bp->b_cylinder; 1699 /* We use implied seek */ 1700 goto doio; 1701 } 1702 1703 if (fd->sc_cylin == bp->b_cylinder) 1704 goto doio; 1705 1706 fd->sc_cylin = -1; 1707 fdc->sc_state = SEEKWAIT; 1708 fdc->sc_nstat = 0; 1709 1710 iostat_seek(fd->sc_dk.dk_stats); 1711 1712 disk_busy(&fd->sc_dk); 1713 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1714 1715 /* specify command */ 1716 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1717 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1718 /* XXX head load time == 6ms */ 1719 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1720 1721 fdc->sc_itask = FDC_ITASK_SENSEI; 1722 /* seek function */ 1723 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1724 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1725 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1726 return 1; 1727 1728 case DODSKCHG: 1729 dodskchg: 1730 /* 1731 * Disk change: force a seek operation by going to cyl 1 1732 * followed by a recalibrate. 1733 */ 1734 disk_busy(&fd->sc_dk); 1735 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1736 fd->sc_cylin = -1; 1737 fdc->sc_nstat = 0; 1738 fdc->sc_state = DSKCHGWAIT; 1739 1740 fdc->sc_itask = FDC_ITASK_SENSEI; 1741 /* seek function */ 1742 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1743 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1744 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1745 return 1; 1746 1747 case DSKCHGWAIT: 1748 callout_stop(&fdc->sc_timo_ch); 1749 disk_unbusy(&fd->sc_dk, 0, 0); 1750 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1751 cyl != 1 * fd->sc_type->step) { 1752 fdcstatus(fdc, "dskchg seek failed"); 1753 fdc->sc_state = DORESET; 1754 } else 1755 fdc->sc_state = DORECAL; 1756 1757 if (fdc_diskchange(fdc)) { 1758 aprint_error_dev(fdc->sc_dev, 1759 "cannot clear disk change status\n"); 1760 fdc->sc_state = DORESET; 1761 } 1762 goto loop; 1763 1764 case DOIO: 1765 doio: 1766 if (finfo != NULL) 1767 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1768 (char *)finfo; 1769 type = fd->sc_type; 1770 sec = fd->sc_blkno % type->seccyl; 1771 nblks = type->seccyl - sec; 1772 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1773 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1774 fd->sc_nblks = nblks; 1775 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1776 head = sec / type->sectrac; 1777 sec -= head * type->sectrac; 1778 #ifdef DIAGNOSTIC 1779 {int block; 1780 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1781 sec; 1782 if (block != fd->sc_blkno) { 1783 printf("fdcintr: block %d != blkno %d\n", block, 1784 (int)fd->sc_blkno); 1785 #ifdef DDB 1786 Debugger(); 1787 #endif 1788 }} 1789 #endif 1790 read = bp->b_flags & B_READ; 1791 1792 /* Setup for pseudo DMA */ 1793 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1794 fdc->sc_tc = fd->sc_nbytes; 1795 1796 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1797 fdc->sc_reg_drs, type->rate); 1798 #ifdef FD_DEBUG 1799 if (fdc_debug > 1) 1800 printf("fdcstate: doio: %s drive %d " 1801 "track %d head %d sec %d nblks %d\n", 1802 finfo ? "format" : 1803 (read ? "read" : "write"), 1804 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1805 #endif 1806 fdc->sc_state = IOCOMPLETE; 1807 fdc->sc_itask = FDC_ITASK_DMA; 1808 fdc->sc_nstat = 0; 1809 1810 disk_busy(&fd->sc_dk); 1811 1812 /* allow 3 seconds for operation */ 1813 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1814 1815 if (finfo != NULL) { 1816 /* formatting */ 1817 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1818 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1819 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1820 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1821 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1822 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1823 } else { 1824 if (read) 1825 FDC_WRFIFO(fdc, NE7CMD_READ); 1826 else 1827 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1828 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1829 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1830 FDC_WRFIFO(fdc, head); 1831 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1832 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1833 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1834 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1835 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1836 } 1837 1838 return 1; /* will return later */ 1839 1840 case SEEKWAIT: 1841 callout_stop(&fdc->sc_timo_ch); 1842 fdc->sc_state = SEEKCOMPLETE; 1843 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1844 /* allow 1/50 second for heads to settle */ 1845 callout_reset(&fdc->sc_intr_ch, hz / 50, 1846 fdcpseudointr, fdc); 1847 return 1; /* will return later */ 1848 } 1849 /*FALLTHROUGH*/ 1850 case SEEKCOMPLETE: 1851 /* no data on seek */ 1852 disk_unbusy(&fd->sc_dk, 0, 0); 1853 1854 /* Make sure seek really happened. */ 1855 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1856 cyl != bp->b_cylinder * fd->sc_type->step) { 1857 #ifdef FD_DEBUG 1858 if (fdc_debug) 1859 fdcstatus(fdc, "seek failed"); 1860 #endif 1861 fdcretry(fdc); 1862 goto loop; 1863 } 1864 fd->sc_cylin = bp->b_cylinder; 1865 goto doio; 1866 1867 case IOTIMEDOUT: 1868 /* 1869 * Try to abort the I/O operation without resetting 1870 * the chip first. Poke TC and arrange to pick up 1871 * the timed out I/O command's status. 1872 */ 1873 fdc->sc_itask = FDC_ITASK_RESULT; 1874 fdc->sc_state = IOCLEANUPWAIT; 1875 fdc->sc_nstat = 0; 1876 /* 1/10 second should be enough */ 1877 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1878 FTC_FLIP; 1879 return 1; 1880 1881 case IOCLEANUPTIMEDOUT: 1882 case SEEKTIMEDOUT: 1883 case RECALTIMEDOUT: 1884 case RESETTIMEDOUT: 1885 case DSKCHGTIMEDOUT: 1886 fdcstatus(fdc, "timeout"); 1887 1888 /* All other timeouts always roll through to a chip reset */ 1889 fdcretry(fdc); 1890 1891 /* Force reset, no matter what fdcretry() says */ 1892 fdc->sc_state = DORESET; 1893 goto loop; 1894 1895 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1896 callout_stop(&fdc->sc_timo_ch); 1897 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1898 (bp->b_flags & B_READ)); 1899 fdcretry(fdc); 1900 goto loop; 1901 1902 case IOCOMPLETE: /* IO DONE, post-analyze */ 1903 callout_stop(&fdc->sc_timo_ch); 1904 1905 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1906 (bp->b_flags & B_READ)); 1907 1908 if (fdc->sc_nstat != 7 || st1 != 0 || 1909 ((st0 & 0xf8) != 0 && 1910 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1911 #ifdef FD_DEBUG 1912 if (fdc_debug) { 1913 fdcstatus(fdc, bp->b_flags & B_READ ? 1914 "read failed" : "write failed"); 1915 printf("blkno %lld nblks %d nstat %d tc %d\n", 1916 (long long)fd->sc_blkno, fd->sc_nblks, 1917 fdc->sc_nstat, fdc->sc_tc); 1918 } 1919 #endif 1920 if (fdc->sc_nstat == 7 && 1921 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1922 1923 /* 1924 * Silently retry overruns if no other 1925 * error bit is set. Adjust threshold. 1926 */ 1927 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1928 if (thr < 15) { 1929 thr++; 1930 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1931 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1932 #ifdef FD_DEBUG 1933 if (fdc_debug) 1934 printf("fdc: %d -> threshold\n", 1935 thr); 1936 #endif 1937 fdconf(fdc); 1938 fdc->sc_overruns = 0; 1939 } 1940 if (++fdc->sc_overruns < 3) { 1941 fdc->sc_state = DOIO; 1942 goto loop; 1943 } 1944 } 1945 fdcretry(fdc); 1946 goto loop; 1947 } 1948 if (fdc->sc_errors) { 1949 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1950 fd->sc_skip / FD_BSIZE(fd), 1951 (struct disklabel *)NULL); 1952 printf("\n"); 1953 fdc->sc_errors = 0; 1954 } else { 1955 if (--fdc->sc_overruns < -20) { 1956 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1957 if (thr > 0) { 1958 thr--; 1959 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1960 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1961 #ifdef FD_DEBUG 1962 if (fdc_debug) 1963 printf("fdc: %d -> threshold\n", 1964 thr); 1965 #endif 1966 fdconf(fdc); 1967 } 1968 fdc->sc_overruns = 0; 1969 } 1970 } 1971 fd->sc_blkno += fd->sc_nblks; 1972 fd->sc_skip += fd->sc_nbytes; 1973 fd->sc_bcount -= fd->sc_nbytes; 1974 if (finfo == NULL && fd->sc_bcount > 0) { 1975 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1976 goto doseek; 1977 } 1978 fdfinish(fd, bp); 1979 goto loop; 1980 1981 case DORESET: 1982 /* try a reset, keep motor on */ 1983 fd_set_motor(fdc); 1984 delay(100); 1985 fdc->sc_nstat = 0; 1986 fdc->sc_itask = FDC_ITASK_SENSEI; 1987 fdc->sc_state = RESETCOMPLETE; 1988 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1989 fdc_reset(fdc); 1990 return 1; /* will return later */ 1991 1992 case RESETCOMPLETE: 1993 callout_stop(&fdc->sc_timo_ch); 1994 fdconf(fdc); 1995 1996 /* FALLTHROUGH */ 1997 case DORECAL: 1998 fdc->sc_state = RECALWAIT; 1999 fdc->sc_itask = FDC_ITASK_SENSEI; 2000 fdc->sc_nstat = 0; 2001 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 2002 /* recalibrate function */ 2003 FDC_WRFIFO(fdc, NE7CMD_RECAL); 2004 FDC_WRFIFO(fdc, fd->sc_drive); 2005 return 1; /* will return later */ 2006 2007 case RECALWAIT: 2008 callout_stop(&fdc->sc_timo_ch); 2009 fdc->sc_state = RECALCOMPLETE; 2010 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 2011 /* allow 1/30 second for heads to settle */ 2012 callout_reset(&fdc->sc_intr_ch, hz / 30, 2013 fdcpseudointr, fdc); 2014 return 1; /* will return later */ 2015 } 2016 2017 case RECALCOMPLETE: 2018 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 2019 #ifdef FD_DEBUG 2020 if (fdc_debug) 2021 fdcstatus(fdc, "recalibrate failed"); 2022 #endif 2023 fdcretry(fdc); 2024 goto loop; 2025 } 2026 fd->sc_cylin = 0; 2027 goto doseek; 2028 2029 case MOTORWAIT: 2030 if (fd->sc_flags & FD_MOTOR_WAIT) 2031 return 1; /* time's not up yet */ 2032 goto doseek; 2033 2034 default: 2035 fdcstatus(fdc, "stray interrupt"); 2036 return 1; 2037 } 2038 #ifdef DIAGNOSTIC 2039 panic("fdcintr: impossible"); 2040 #endif 2041 2042 xxx: 2043 /* 2044 * We get here if the chip locks up in FDC_WRFIFO() 2045 * Cancel any operation and schedule a reset 2046 */ 2047 callout_stop(&fdc->sc_timo_ch); 2048 fdcretry(fdc); 2049 fdc->sc_state = DORESET; 2050 goto loop; 2051 2052 #undef st0 2053 #undef st1 2054 #undef cyl 2055 } 2056 2057 void 2058 fdcretry(struct fdc_softc *fdc) 2059 { 2060 struct fd_softc *fd; 2061 struct buf *bp; 2062 int error = EIO; 2063 2064 fd = fdc->sc_drives.tqh_first; 2065 bp = bufq_peek(fd->sc_q); 2066 2067 fdc->sc_overruns = 0; 2068 if (fd->sc_opts & FDOPT_NORETRY) 2069 goto fail; 2070 2071 switch (fdc->sc_errors) { 2072 case 0: 2073 if (fdc->sc_nstat == 7 && 2074 (fdc->sc_status[0] & 0xd8) == 0x40 && 2075 (fdc->sc_status[1] & 0x2) == 0x2) { 2076 aprint_error_dev(fdc->sc_dev, "read-only medium\n"); 2077 error = EROFS; 2078 goto failsilent; 2079 } 2080 /* try again */ 2081 fdc->sc_state = 2082 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2083 break; 2084 2085 case 1: case 2: case 3: 2086 /* didn't work; try recalibrating */ 2087 fdc->sc_state = DORECAL; 2088 break; 2089 2090 case 4: 2091 if (fdc->sc_nstat == 7 && 2092 fdc->sc_status[0] == 0 && 2093 fdc->sc_status[1] == 0 && 2094 fdc->sc_status[2] == 0) { 2095 /* 2096 * We've retried a few times and we've got 2097 * valid status and all three status bytes 2098 * are zero. Assume this condition is the 2099 * result of no disk loaded into the drive. 2100 */ 2101 aprint_error_dev(fdc->sc_dev, "no medium?\n"); 2102 error = ENODEV; 2103 goto failsilent; 2104 } 2105 2106 /* still no go; reset the bastard */ 2107 fdc->sc_state = DORESET; 2108 break; 2109 2110 default: 2111 fail: 2112 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2113 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2114 fd->sc_skip / FD_BSIZE(fd), 2115 (struct disklabel *)NULL); 2116 printf("\n"); 2117 fdcstatus(fdc, "controller status"); 2118 } 2119 2120 failsilent: 2121 bp->b_error = error; 2122 fdfinish(fd, bp); 2123 } 2124 fdc->sc_errors++; 2125 } 2126 2127 int 2128 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2129 { 2130 struct fd_softc *fd; 2131 struct fdc_softc *fdc; 2132 struct fdformat_parms *form_parms; 2133 struct fdformat_cmd *form_cmd; 2134 struct ne7_fd_formb *fd_formb; 2135 int il[FD_MAX_NSEC + 1]; 2136 int unit; 2137 int i, j; 2138 int error; 2139 2140 unit = FDUNIT(dev); 2141 if (unit >= fd_cd.cd_ndevs) 2142 return ENXIO; 2143 2144 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2145 fdc = device_private(device_parent(fd->sc_dev)); 2146 2147 switch (cmd) { 2148 case DIOCGDINFO: 2149 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2150 return 0; 2151 2152 case DIOCWLABEL: 2153 if ((flag & FWRITE) == 0) 2154 return EBADF; 2155 /* XXX do something */ 2156 return 0; 2157 2158 case DIOCWDINFO: 2159 if ((flag & FWRITE) == 0) 2160 return EBADF; 2161 2162 error = setdisklabel(fd->sc_dk.dk_label, 2163 (struct disklabel *)addr, 0, 2164 fd->sc_dk.dk_cpulabel); 2165 if (error) 2166 return error; 2167 2168 error = writedisklabel(dev, fdstrategy, 2169 fd->sc_dk.dk_label, 2170 fd->sc_dk.dk_cpulabel); 2171 return error; 2172 2173 case DIOCLOCK: 2174 /* 2175 * Nothing to do here, really. 2176 */ 2177 return 0; 2178 2179 case DIOCEJECT: 2180 if (*(int *)addr == 0) { 2181 int part = DISKPART(dev); 2182 /* 2183 * Don't force eject: check that we are the only 2184 * partition open. If so, unlock it. 2185 */ 2186 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2187 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2188 fd->sc_dk.dk_openmask) { 2189 return EBUSY; 2190 } 2191 } 2192 /* FALLTHROUGH */ 2193 case ODIOCEJECT: 2194 if (fdc->sc_flags & FDC_NOEJECT) 2195 return EINVAL; 2196 fd_do_eject(fd); 2197 return 0; 2198 2199 case FDIOCGETFORMAT: 2200 form_parms = (struct fdformat_parms *)addr; 2201 form_parms->fdformat_version = FDFORMAT_VERSION; 2202 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2203 form_parms->ncyl = fd->sc_type->cylinders; 2204 form_parms->nspt = fd->sc_type->sectrac; 2205 form_parms->ntrk = fd->sc_type->heads; 2206 form_parms->stepspercyl = fd->sc_type->step; 2207 form_parms->gaplen = fd->sc_type->gap2; 2208 form_parms->fillbyte = fd->sc_type->fillbyte; 2209 form_parms->interleave = fd->sc_type->interleave; 2210 switch (fd->sc_type->rate) { 2211 case FDC_500KBPS: 2212 form_parms->xfer_rate = 500 * 1024; 2213 break; 2214 case FDC_300KBPS: 2215 form_parms->xfer_rate = 300 * 1024; 2216 break; 2217 case FDC_250KBPS: 2218 form_parms->xfer_rate = 250 * 1024; 2219 break; 2220 default: 2221 return EINVAL; 2222 } 2223 return 0; 2224 2225 case FDIOCSETFORMAT: 2226 if ((flag & FWRITE) == 0) 2227 return EBADF; /* must be opened for writing */ 2228 2229 form_parms = (struct fdformat_parms *)addr; 2230 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2231 return EINVAL;/* wrong version of formatting prog */ 2232 2233 i = form_parms->nbps >> 7; 2234 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2235 i & ~(1 << (ffs(i)-1))) 2236 /* not a power-of-two multiple of 128 */ 2237 return EINVAL; 2238 2239 switch (form_parms->xfer_rate) { 2240 case 500 * 1024: 2241 fd->sc_type->rate = FDC_500KBPS; 2242 break; 2243 case 300 * 1024: 2244 fd->sc_type->rate = FDC_300KBPS; 2245 break; 2246 case 250 * 1024: 2247 fd->sc_type->rate = FDC_250KBPS; 2248 break; 2249 default: 2250 return EINVAL; 2251 } 2252 2253 if (form_parms->nspt > FD_MAX_NSEC || 2254 form_parms->fillbyte > 0xff || 2255 form_parms->interleave > 0xff) 2256 return EINVAL; 2257 fd->sc_type->sectrac = form_parms->nspt; 2258 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2259 return EINVAL; 2260 fd->sc_type->heads = form_parms->ntrk; 2261 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2262 fd->sc_type->secsize = ffs(i)-1; 2263 fd->sc_type->gap2 = form_parms->gaplen; 2264 fd->sc_type->cylinders = form_parms->ncyl; 2265 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2266 form_parms->nbps / DEV_BSIZE; 2267 fd->sc_type->step = form_parms->stepspercyl; 2268 fd->sc_type->fillbyte = form_parms->fillbyte; 2269 fd->sc_type->interleave = form_parms->interleave; 2270 return 0; 2271 2272 case FDIOCFORMAT_TRACK: 2273 if((flag & FWRITE) == 0) 2274 /* must be opened for writing */ 2275 return EBADF; 2276 form_cmd = (struct fdformat_cmd *)addr; 2277 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2278 /* wrong version of formatting prog */ 2279 return EINVAL; 2280 2281 if (form_cmd->head >= fd->sc_type->heads || 2282 form_cmd->cylinder >= fd->sc_type->cylinders) { 2283 return EINVAL; 2284 } 2285 2286 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2287 M_TEMP, M_NOWAIT); 2288 if (fd_formb == 0) 2289 return ENOMEM; 2290 2291 fd_formb->head = form_cmd->head; 2292 fd_formb->cyl = form_cmd->cylinder; 2293 fd_formb->transfer_rate = fd->sc_type->rate; 2294 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2295 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2296 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2297 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2298 2299 memset(il, 0, sizeof il); 2300 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2301 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2302 j++; 2303 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2304 j += fd->sc_type->interleave; 2305 } 2306 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2307 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2308 fd_formb->fd_formb_headno(i) = form_cmd->head; 2309 fd_formb->fd_formb_secno(i) = il[i + 1]; 2310 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2311 } 2312 2313 error = fdformat(dev, fd_formb, l->l_proc); 2314 free(fd_formb, M_TEMP); 2315 return error; 2316 2317 case FDIOCGETOPTS: /* get drive options */ 2318 *(int *)addr = fd->sc_opts; 2319 return 0; 2320 2321 case FDIOCSETOPTS: /* set drive options */ 2322 fd->sc_opts = *(int *)addr; 2323 return 0; 2324 2325 #ifdef FD_DEBUG 2326 case _IO('f', 100): 2327 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2328 fdcresult(fdc); 2329 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2330 for (i = 0; i < fdc->sc_nstat; i++) 2331 printf(" 0x%x", fdc->sc_status[i]); 2332 printf(">\n"); 2333 return 0; 2334 2335 case _IOW('f', 101, int): 2336 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2337 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2338 fdconf(fdc); 2339 return 0; 2340 2341 case _IO('f', 102): 2342 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2343 fdcresult(fdc); 2344 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2345 for (i=0; i< fdc->sc_nstat; i++) 2346 printf(" 0x%x", fdc->sc_status[i]); 2347 printf(">\n"); 2348 return 0; 2349 #endif 2350 default: 2351 return ENOTTY; 2352 } 2353 2354 #ifdef DIAGNOSTIC 2355 panic("fdioctl: impossible"); 2356 #endif 2357 } 2358 2359 int 2360 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2361 { 2362 int rv = 0; 2363 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2364 struct fd_type *type = fd->sc_type; 2365 struct buf *bp; 2366 2367 /* set up a buffer header for fdstrategy() */ 2368 bp = getiobuf(NULL, false); 2369 if (bp == NULL) 2370 return ENOBUFS; 2371 2372 bp->b_vp = NULL; 2373 bp->b_cflags = BC_BUSY; 2374 bp->b_flags = B_PHYS | B_FORMAT; 2375 bp->b_proc = p; 2376 bp->b_dev = dev; 2377 2378 /* 2379 * Calculate a fake blkno, so fdstrategy() would initiate a 2380 * seek to the requested cylinder. 2381 */ 2382 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2383 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2384 / DEV_BSIZE; 2385 2386 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2387 bp->b_data = (void *)finfo; 2388 2389 #ifdef FD_DEBUG 2390 if (fdc_debug) { 2391 int i; 2392 2393 printf("fdformat: blkno 0x%llx count %d\n", 2394 (unsigned long long)bp->b_blkno, bp->b_bcount); 2395 2396 printf("\tcyl:\t%d\n", finfo->cyl); 2397 printf("\thead:\t%d\n", finfo->head); 2398 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2399 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2400 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2401 printf("\ttrack data:"); 2402 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2403 printf(" [c%d h%d s%d]", 2404 finfo->fd_formb_cylno(i), 2405 finfo->fd_formb_headno(i), 2406 finfo->fd_formb_secno(i) ); 2407 if (finfo->fd_formb_secsize(i) != 2) 2408 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2409 } 2410 printf("\n"); 2411 } 2412 #endif 2413 2414 /* now do the format */ 2415 fdstrategy(bp); 2416 2417 /* ...and wait for it to complete */ 2418 rv = biowait(bp); 2419 putiobuf(bp); 2420 return rv; 2421 } 2422 2423 void 2424 fdgetdisklabel(dev_t dev) 2425 { 2426 int i; 2427 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2428 struct disklabel *lp = fd->sc_dk.dk_label; 2429 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2430 2431 memset(lp, 0, sizeof(struct disklabel)); 2432 memset(lp, 0, sizeof(struct cpu_disklabel)); 2433 2434 lp->d_type = DTYPE_FLOPPY; 2435 lp->d_secsize = FD_BSIZE(fd); 2436 lp->d_secpercyl = fd->sc_type->seccyl; 2437 lp->d_nsectors = fd->sc_type->sectrac; 2438 lp->d_ncylinders = fd->sc_type->cylinders; 2439 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2440 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2441 lp->d_rpm = 300; /* XXX like it matters... */ 2442 2443 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2444 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2445 lp->d_interleave = 1; 2446 lp->d_flags = D_REMOVABLE; 2447 2448 lp->d_partitions[RAW_PART].p_offset = 0; 2449 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2450 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2451 lp->d_npartitions = RAW_PART + 1; 2452 2453 lp->d_magic = DISKMAGIC; 2454 lp->d_magic2 = DISKMAGIC; 2455 lp->d_checksum = dkcksum(lp); 2456 2457 /* 2458 * Call the generic disklabel extraction routine. If there's 2459 * not a label there, fake it. 2460 */ 2461 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2462 strncpy(lp->d_packname, "default label", 2463 sizeof(lp->d_packname)); 2464 /* 2465 * Reset the partition info; it might have gotten 2466 * trashed in readdisklabel(). 2467 * 2468 * XXX Why do we have to do this? readdisklabel() 2469 * should be safe... 2470 */ 2471 for (i = 0; i < MAXPARTITIONS; ++i) { 2472 lp->d_partitions[i].p_offset = 0; 2473 if (i == RAW_PART) { 2474 lp->d_partitions[i].p_size = 2475 lp->d_secpercyl * lp->d_ncylinders; 2476 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2477 } else { 2478 lp->d_partitions[i].p_size = 0; 2479 lp->d_partitions[i].p_fstype = FS_UNUSED; 2480 } 2481 } 2482 lp->d_npartitions = RAW_PART + 1; 2483 } 2484 } 2485 2486 void 2487 fd_do_eject(struct fd_softc *fd) 2488 { 2489 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 2490 2491 #ifdef SUN4 2492 if (CPU_ISSUN4C) { 2493 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2494 delay(10); 2495 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2496 return; 2497 } 2498 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2499 #endif 2500 bus_space_tag_t t = fdc->sc_bustag; 2501 bus_space_handle_t h = fdc->sc_handle; 2502 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2503 2504 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2505 delay(10); 2506 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2507 return; 2508 #ifdef SUN4 2509 } 2510 #endif 2511 } 2512 2513 /* ARGSUSED */ 2514 void 2515 fd_mountroot_hook(device_t dev) 2516 { 2517 int c; 2518 2519 fd_do_eject((struct fd_softc *)dev); 2520 printf("Insert filesystem floppy and press return."); 2521 for (;;) { 2522 c = cngetc(); 2523 if ((c == '\r') || (c == '\n')) { 2524 printf("\n"); 2525 break; 2526 } 2527 } 2528 } 2529 2530 #ifdef MEMORY_DISK_HOOKS 2531 2532 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2533 2534 int 2535 fd_read_md_image(size_t *sizep, void **addrp) 2536 { 2537 struct buf buf, *bp = &buf; 2538 dev_t dev; 2539 off_t offset; 2540 char *addr; 2541 2542 dev = makedev(54,0); /* XXX */ 2543 2544 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2545 *addrp = addr; 2546 2547 if (fdopen(dev, 0, S_IFCHR, NULL)) 2548 panic("fd: mountroot: fdopen"); 2549 2550 offset = 0; 2551 2552 for (;;) { 2553 bp->b_dev = dev; 2554 bp->b_error = 0; 2555 bp->b_resid = 0; 2556 bp->b_proc = NULL; 2557 bp->b_cflags = BC_BUSY; 2558 bp->b_flags = B_PHYS | B_RAW | B_READ; 2559 bp->b_blkno = btodb(offset); 2560 bp->b_bcount = DEV_BSIZE; 2561 bp->b_data = addr; 2562 fdstrategy(bp); 2563 biowait(bp); 2564 if (bp->b_error) 2565 panic("fd: mountroot: fdread error %d", bp->b_error); 2566 2567 if (bp->b_resid != 0) 2568 break; 2569 2570 addr += DEV_BSIZE; 2571 offset += DEV_BSIZE; 2572 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2573 break; 2574 } 2575 (void)fdclose(dev, 0, S_IFCHR, NULL); 2576 *sizep = offset; 2577 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2578 return 0; 2579 } 2580 #endif /* MEMORY_DISK_HOOKS */ 2581 2582 static void 2583 fd_set_geometry(struct fd_softc *fd) 2584 { 2585 const struct fd_type *fdt; 2586 2587 fdt = fd->sc_type; 2588 if (fdt == NULL) { 2589 fdt = fd->sc_deftype; 2590 if (fdt == NULL) 2591 return; 2592 } 2593 2594 struct disk_geom *dg = &fd->sc_dk.dk_geom; 2595 2596 memset(dg, 0, sizeof(*dg)); 2597 dg->dg_secperunit = fdt->size; 2598 dg->dg_nsectors = fdt->sectrac; 2599 switch (fdt->secsize) { 2600 case 2: 2601 dg->dg_secsize = 512; 2602 break; 2603 case 3: 2604 dg->dg_secsize = 1024; 2605 break; 2606 default: 2607 break; 2608 } 2609 dg->dg_ntracks = fdt->heads; 2610 dg->dg_ncylinders = fdt->cylinders; 2611 disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); 2612 } 2613
Indexes created Tue Sep 30 11:09:46 GMT 2025