fdc.c revision 1.21
1 /* $NetBSD: fdc.c,v 1.21 2008/04/05 13:40:05 cegger Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /*- 74 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 75 * 76 * This code is derived from software contributed to Berkeley by 77 * Don Ahn. 78 * 79 * Redistribution and use in source and binary forms, with or without 80 * modification, are permitted provided that the following conditions 81 * are met: 82 * 1. Redistributions of source code must retain the above copyright 83 * notice, this list of conditions and the following disclaimer. 84 * 2. Redistributions in binary form must reproduce the above copyright 85 * notice, this list of conditions and the following disclaimer in the 86 * documentation and/or other materials provided with the distribution. 87 * 3. All advertising materials mentioning features or use of this software 88 * must display the following acknowledgement: 89 * This product includes software developed by the University of 90 * California, Berkeley and its contributors. 91 * 4. Neither the name of the University nor the names of its contributors 92 * may be used to endorse or promote products derived from this software 93 * without specific prior written permission. 94 * 95 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 96 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 97 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 98 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 99 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 100 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 101 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 103 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 104 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 105 * SUCH DAMAGE. 106 * 107 * @(#)fd.c 7.4 (Berkeley) 5/25/91 108 */ 109 110 #include <sys/cdefs.h> 111 __KERNEL_RCSID(0, "$NetBSD: fdc.c,v 1.21 2008/04/05 13:40:05 cegger Exp $"); 112 113 #include "opt_ddb.h" 114 #include "opt_md.h" 115 116 #include <sys/param.h> 117 #include <sys/types.h> 118 #include <sys/systm.h> 119 #include <sys/callout.h> 120 #include <sys/kernel.h> 121 #include <sys/file.h> 122 #include <sys/ioctl.h> 123 #include <sys/device.h> 124 #include <sys/disklabel.h> 125 #include <sys/disk.h> 126 #include <sys/fdio.h> 127 #include <sys/buf.h> 128 #include <sys/bufq.h> 129 #include <sys/malloc.h> 130 #include <sys/proc.h> 131 #include <sys/uio.h> 132 #include <sys/stat.h> 133 #include <sys/syslog.h> 134 #include <sys/queue.h> 135 #include <sys/conf.h> 136 #include <sys/intr.h> 137 138 #include <dev/cons.h> 139 140 #include <uvm/uvm_extern.h> 141 142 #include <machine/autoconf.h> 143 144 #ifdef SUN4 145 #include <sparc/sparc/auxreg.h> 146 #include <sparc/dev/fdreg.h> 147 #include <sparc/dev/fdvar.h> 148 #elif SUN4U 149 #include <dev/ebus/ebusreg.h> 150 #include <dev/ebus/ebusvar.h> 151 /* #include <sparc/sparc/auxreg.h> */ 152 #include <sparc64/dev/auxioreg.h> 153 #include <sparc64/dev/auxiovar.h> 154 #include <sparc64/dev/fdcreg.h> 155 #include <sparc64/dev/fdcvar.h> 156 #endif 157 158 #include <prop/proplib.h> 159 160 #define FDUNIT(dev) (minor(dev) / 8) 161 #define FDTYPE(dev) (minor(dev) % 8) 162 163 /* (mis)use device use flag to identify format operation */ 164 #define B_FORMAT B_DEVPRIVATE 165 166 #define FD_DEBUG 167 #ifdef FD_DEBUG 168 int fdc_debug = 0; 169 #endif 170 171 enum fdc_state { 172 DEVIDLE = 0, 173 MOTORWAIT, /* 1 */ 174 DOSEEK, /* 2 */ 175 SEEKWAIT, /* 3 */ 176 SEEKTIMEDOUT, /* 4 */ 177 SEEKCOMPLETE, /* 5 */ 178 DOIO, /* 6 */ 179 IOCOMPLETE, /* 7 */ 180 IOTIMEDOUT, /* 8 */ 181 IOCLEANUPWAIT, /* 9 */ 182 IOCLEANUPTIMEDOUT,/*10 */ 183 DORESET, /* 11 */ 184 RESETCOMPLETE, /* 12 */ 185 RESETTIMEDOUT, /* 13 */ 186 DORECAL, /* 14 */ 187 RECALWAIT, /* 15 */ 188 RECALTIMEDOUT, /* 16 */ 189 RECALCOMPLETE, /* 17 */ 190 DODSKCHG, /* 18 */ 191 DSKCHGWAIT, /* 19 */ 192 DSKCHGTIMEDOUT, /* 20 */ 193 }; 194 195 /* software state, per controller */ 196 struct fdc_softc { 197 struct device sc_dev; /* boilerplate */ 198 bus_space_tag_t sc_bustag; 199 200 struct callout sc_timo_ch; /* timeout callout */ 201 struct callout sc_intr_ch; /* pseudo-intr callout */ 202 203 struct fd_softc *sc_fd[4]; /* pointers to children */ 204 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 205 enum fdc_state sc_state; 206 int sc_flags; 207 #define FDC_82077 0x01 208 #define FDC_NEEDHEADSETTLE 0x02 209 #define FDC_EIS 0x04 210 #define FDC_NEEDMOTORWAIT 0x08 211 #define FDC_NOEJECT 0x10 212 #define FDC_EBUS 0x20 213 int sc_errors; /* number of retries so far */ 214 int sc_overruns; /* number of DMA overruns */ 215 int sc_cfg; /* current configuration */ 216 struct fdcio sc_io; 217 #define sc_handle sc_io.fdcio_handle 218 #define sc_reg_msr sc_io.fdcio_reg_msr 219 #define sc_reg_fifo sc_io.fdcio_reg_fifo 220 #define sc_reg_dor sc_io.fdcio_reg_dor 221 #define sc_reg_dir sc_io.fdcio_reg_dir 222 #define sc_reg_drs sc_io.fdcio_reg_msr 223 #define sc_itask sc_io.fdcio_itask 224 #define sc_istatus sc_io.fdcio_istatus 225 #define sc_data sc_io.fdcio_data 226 #define sc_tc sc_io.fdcio_tc 227 #define sc_nstat sc_io.fdcio_nstat 228 #define sc_status sc_io.fdcio_status 229 #define sc_intrcnt sc_io.fdcio_intrcnt 230 231 void *sc_sicookie; /* softint(9) cookie */ 232 }; 233 234 #ifdef SUN4 235 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 236 #endif 237 238 /* controller driver configuration */ 239 #ifdef SUN4 240 int fdcmatch_mainbus(struct device *, struct cfdata *, void*); 241 int fdcmatch_obio(struct device *, struct cfdata *, void *); 242 void fdcattach_mainbus(struct device *, struct device *, void *); 243 void fdcattach_obio(struct device *, struct device *, void *); 244 #elif SUN4U 245 int fdcmatch_sbus(struct device *, struct cfdata *, void *); 246 int fdcmatch_ebus(struct device *, struct cfdata *, void *); 247 void fdcattach_sbus(struct device *, struct device *, void *); 248 void fdcattach_ebus(struct device *, struct device *, void *); 249 #endif 250 251 int fdcattach(struct fdc_softc *, int); 252 253 #ifdef SUN4 254 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 255 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 256 257 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 258 fdcmatch_obio, fdcattach_obio, NULL, NULL); 259 #elif SUN4U 260 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc), 261 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 262 263 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc), 264 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 265 #endif 266 267 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 268 269 /* 270 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 271 * we tell them apart. 272 */ 273 struct fd_type { 274 int sectrac; /* sectors per track */ 275 int heads; /* number of heads */ 276 int seccyl; /* sectors per cylinder */ 277 int secsize; /* size code for sectors */ 278 int datalen; /* data len when secsize = 0 */ 279 int steprate; /* step rate and head unload time */ 280 int gap1; /* gap len between sectors */ 281 int gap2; /* formatting gap */ 282 int cylinders; /* total num of cylinders */ 283 int size; /* size of disk in sectors */ 284 int step; /* steps per cylinder */ 285 int rate; /* transfer speed code */ 286 int fillbyte; /* format fill byte */ 287 int interleave; /* interleave factor (formatting) */ 288 const char *name; 289 }; 290 291 /* The order of entries in the following table is important -- BEWARE! */ 292 struct fd_type fd_types[] = { 293 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 294 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 295 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 296 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 297 }; 298 299 /* software state, per disk (with up to 4 disks per ctlr) */ 300 struct fd_softc { 301 struct device sc_dv; /* generic device info */ 302 struct disk sc_dk; /* generic disk info */ 303 304 struct fd_type *sc_deftype; /* default type descriptor */ 305 struct fd_type *sc_type; /* current type descriptor */ 306 307 struct callout sc_motoron_ch; 308 struct callout sc_motoroff_ch; 309 310 daddr_t sc_blkno; /* starting block number */ 311 int sc_bcount; /* byte count left */ 312 int sc_skip; /* bytes already transferred */ 313 int sc_nblks; /* number of blocks currently transferring */ 314 int sc_nbytes; /* number of bytes currently transferring */ 315 316 int sc_drive; /* physical unit number */ 317 int sc_flags; 318 #define FD_OPEN 0x01 /* it's open */ 319 #define FD_MOTOR 0x02 /* motor should be on */ 320 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 321 int sc_cylin; /* where we think the head is */ 322 int sc_opts; /* user-set options */ 323 324 void *sc_sdhook; /* shutdownhook cookie */ 325 326 TAILQ_ENTRY(fd_softc) sc_drivechain; 327 int sc_ops; /* I/O ops since last switch */ 328 struct bufq_state *sc_q;/* pending I/O requests */ 329 int sc_active; /* number of active I/O requests */ 330 }; 331 332 /* floppy driver configuration */ 333 int fdmatch(struct device *, struct cfdata *, void *); 334 void fdattach(struct device *, struct device *, void *); 335 336 CFATTACH_DECL(fd, sizeof(struct fd_softc), 337 fdmatch, fdattach, NULL, NULL); 338 339 extern struct cfdriver fd_cd; 340 341 dev_type_open(fdopen); 342 dev_type_close(fdclose); 343 dev_type_read(fdread); 344 dev_type_write(fdwrite); 345 dev_type_ioctl(fdioctl); 346 dev_type_strategy(fdstrategy); 347 348 const struct bdevsw fd_bdevsw = { 349 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 350 }; 351 352 const struct cdevsw fd_cdevsw = { 353 fdopen, fdclose, fdread, fdwrite, fdioctl, 354 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 355 }; 356 357 void fdgetdisklabel(dev_t); 358 int fd_get_parms(struct fd_softc *); 359 void fdstrategy(struct buf *); 360 void fdstart(struct fd_softc *); 361 int fdprint(void *, const char *); 362 363 struct dkdriver fddkdriver = { fdstrategy, NULL }; 364 365 struct fd_type *fd_nvtotype(char *, int, int); 366 void fd_set_motor(struct fdc_softc *); 367 void fd_motor_off(void *); 368 void fd_motor_on(void *); 369 int fdcresult(struct fdc_softc *); 370 int fdc_wrfifo(struct fdc_softc *, uint8_t); 371 void fdcstart(struct fdc_softc *); 372 void fdcstatus(struct fdc_softc *, const char *); 373 void fdc_reset(struct fdc_softc *); 374 int fdc_diskchange(struct fdc_softc *); 375 void fdctimeout(void *); 376 void fdcpseudointr(void *); 377 int fdc_c_hwintr(void *); 378 void fdchwintr(void); 379 void fdcswintr(void *); 380 int fdcstate(struct fdc_softc *); 381 void fdcretry(struct fdc_softc *); 382 void fdfinish(struct fd_softc *, struct buf *); 383 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 384 void fd_do_eject(struct fd_softc *); 385 void fd_mountroot_hook(struct device *); 386 static int fdconf(struct fdc_softc *); 387 static void establish_chip_type( 388 struct fdc_softc *, 389 bus_space_tag_t, 390 bus_addr_t, 391 bus_size_t, 392 bus_space_handle_t); 393 static void fd_set_properties(struct fd_softc *); 394 395 #ifdef MEMORY_DISK_HOOKS 396 int fd_read_md_image(size_t *, void **); 397 #endif 398 399 #ifdef SUN4 400 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 401 402 int 403 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 404 { 405 struct mainbus_attach_args *ma = aux; 406 407 /* 408 * Floppy controller is on mainbus on sun4c. 409 */ 410 if (!CPU_ISSUN4C) 411 return 0; 412 413 /* sun4c PROMs call the controller "fd" */ 414 if (strcmp("fd", ma->ma_name) != 0) 415 return 0; 416 417 return bus_space_probe(ma->ma_bustag, 418 ma->ma_paddr, 419 1, /* probe size */ 420 0, /* offset */ 421 0, /* flags */ 422 NULL, NULL); 423 } 424 425 int 426 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 427 { 428 union obio_attach_args *uoba = aux; 429 struct sbus_attach_args *sa; 430 431 /* 432 * Floppy controller is on obio on sun4m. 433 */ 434 if (uoba->uoba_isobio4 != 0) 435 return 0; 436 437 sa = &uoba->uoba_sbus; 438 439 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 440 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 441 return 0; 442 443 return bus_space_probe(sa->sa_bustag, 444 sbus_bus_addr(sa->sa_bustag, 445 sa->sa_slot, sa->sa_offset), 446 1, /* probe size */ 447 0, /* offset */ 448 0, /* flags */ 449 NULL, NULL); 450 } 451 452 #elif SUN4U 453 454 int 455 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux) 456 { 457 struct sbus_attach_args *sa = aux; 458 459 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 460 } 461 462 int 463 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux) 464 { 465 struct ebus_attach_args *ea = aux; 466 467 return strcmp("fdthree", ea->ea_name) == 0; 468 } 469 #endif 470 471 static void 472 establish_chip_type(struct fdc_softc *fdc, 473 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 474 bus_space_handle_t handle) 475 { 476 uint8_t v; 477 478 /* 479 * This hack from Chris Torek: apparently DOR really 480 * addresses MSR/DRS on a 82072. 481 * We used to rely on the VERSION command to tell the 482 * difference (which did not work). 483 */ 484 485 /* First, check the size of the register bank */ 486 if (size < 8) 487 /* It isn't a 82077 */ 488 return; 489 490 #ifdef SUN4 491 /* Then probe the DOR register offset */ 492 if (bus_space_probe(tag, addr, 493 1, /* probe size */ 494 FDREG77_DOR, /* offset */ 495 0, /* flags */ 496 NULL, NULL) == 0) { 497 498 /* It isn't a 82077 */ 499 return; 500 } 501 #endif 502 503 v = bus_space_read_1(tag, handle, FDREG77_DOR); 504 if (v == NE7_RQM) { 505 /* 506 * Value in DOR looks like it's really MSR 507 */ 508 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 509 v = bus_space_read_1(tag, handle, FDREG77_DOR); 510 if (v == NE7_RQM) { 511 /* 512 * The value in the DOR didn't stick; 513 * it isn't a 82077 514 */ 515 return; 516 } 517 } 518 519 fdc->sc_flags |= FDC_82077; 520 } 521 522 /* 523 * Arguments passed between fdcattach and fdprobe. 524 */ 525 struct fdc_attach_args { 526 int fa_drive; 527 struct fd_type *fa_deftype; 528 }; 529 530 /* 531 * Print the location of a disk drive (called just before attaching the 532 * the drive). If `fdc' is not NULL, the drive was found but was not 533 * in the system config file; print the drive name as well. 534 * Return QUIET (config_find ignores this if the device was configured) to 535 * avoid printing `fdN not configured' messages. 536 */ 537 int 538 fdprint(void *aux, const char *fdc) 539 { 540 register struct fdc_attach_args *fa = aux; 541 542 if (!fdc) 543 aprint_normal(" drive %d", fa->fa_drive); 544 return QUIET; 545 } 546 547 /* 548 * Configure several parameters and features on the FDC. 549 * Return 0 on success. 550 */ 551 static int 552 fdconf(struct fdc_softc *fdc) 553 { 554 int vroom; 555 556 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 557 return -1; 558 559 /* 560 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 561 * the PROM thinks is appropriate. 562 */ 563 if ((vroom = fdc->sc_status[7]) == 0) 564 vroom = 0x64; 565 566 /* Configure controller to use FIFO and Implied Seek */ 567 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 568 return -1; 569 if (fdc_wrfifo(fdc, vroom) != 0) 570 return -1; 571 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 572 return -1; 573 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 574 return -1; 575 /* No result phase for the NE7CMD_CFG command */ 576 577 if ((fdc->sc_flags & FDC_82077) != 0) { 578 /* Lock configuration across soft resets. */ 579 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 580 fdcresult(fdc) != 1) { 581 #ifdef DEBUG 582 printf("fdconf: CFGLOCK failed"); 583 #endif 584 return -1; 585 } 586 } 587 588 return 0; 589 #if 0 590 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 591 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 592 if (fdc_debug) 593 printf("[version cmd]"); 594 } 595 #endif 596 } 597 598 #ifdef SUN4 599 void 600 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 601 { 602 struct fdc_softc *fdc = (void *)self; 603 struct mainbus_attach_args *ma = aux; 604 605 fdc->sc_bustag = ma->ma_bustag; 606 607 if (bus_space_map( 608 ma->ma_bustag, 609 ma->ma_paddr, 610 ma->ma_size, 611 BUS_SPACE_MAP_LINEAR, 612 &fdc->sc_handle) != 0) { 613 aprint_error_dev(self, "cannot map registers\n"); 614 return; 615 } 616 617 establish_chip_type(fdc, 618 ma->ma_bustag, 619 ma->ma_paddr, 620 ma->ma_size, 621 fdc->sc_handle); 622 623 if (fdcattach(fdc, ma->ma_pri) != 0) 624 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 625 } 626 627 void 628 fdcattach_obio(struct device *parent, struct device *self, void *aux) 629 { 630 struct fdc_softc *fdc = (void *)self; 631 union obio_attach_args *uoba = aux; 632 struct sbus_attach_args *sa = &uoba->uoba_sbus; 633 634 if (sa->sa_nintr == 0) { 635 printf(": no interrupt line configured\n"); 636 return; 637 } 638 639 fdc->sc_bustag = sa->sa_bustag; 640 641 if (sbus_bus_map(sa->sa_bustag, 642 sa->sa_slot, sa->sa_offset, sa->sa_size, 643 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 644 aprint_error_dev(self, "cannot map control registers\n"); 645 return; 646 } 647 648 establish_chip_type(fdc, 649 sa->sa_bustag, 650 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 651 sa->sa_size, 652 fdc->sc_handle); 653 654 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 655 printf(": no drives attached\n"); 656 return; 657 } 658 659 if (fdcattach(fdc, sa->sa_pri) != 0) 660 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 661 } 662 663 #elif SUN4U 664 665 void 666 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 667 { 668 struct fdc_softc *fdc = (void *)self; 669 struct sbus_attach_args *sa = aux; 670 671 if (sa->sa_nintr == 0) { 672 printf(": no interrupt line configured\n"); 673 return; 674 } 675 676 if (auxio_fd_control(0) != 0) { 677 printf(": can't attach before auxio\n"); 678 return; 679 } 680 681 fdc->sc_bustag = sa->sa_bustag; 682 683 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 684 sa->sa_size, 0, &fdc->sc_handle) != 0) { 685 printf(": cannot map control registers\n"); 686 return; 687 } 688 689 establish_chip_type(fdc, 690 sa->sa_bustag, 691 BUS_ADDR(sa->sa_slot, sa->sa_offset), 692 sa->sa_size, 693 fdc->sc_handle); 694 695 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 696 printf(": no drives attached\n"); 697 return; 698 } 699 700 if (prom_getproplen(sa->sa_node, "manual") >= 0) 701 fdc->sc_flags |= FDC_NOEJECT; 702 703 704 if (fdcattach(fdc, sa->sa_pri) != 0) 705 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 706 } 707 708 void 709 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 710 { 711 struct fdc_softc *fdc = (void *)self; 712 struct ebus_attach_args *ea = aux; 713 int map_vaddr; 714 715 if (ea->ea_nintr == 0) { 716 printf(": no interrupt line configured\n"); 717 return; 718 } 719 720 if (ea->ea_nreg < 3) { 721 printf(": expected 3 registers, only got %d\n", 722 ea->ea_nreg); 723 return; 724 } 725 726 fdc->sc_bustag = ea->ea_bustag; 727 728 if (ea->ea_nvaddr > 0) { 729 sparc_promaddr_to_handle(ea->ea_bustag, 730 ea->ea_vaddr[0], &fdc->sc_handle); 731 map_vaddr = 1; 732 } else if (bus_space_map(fdc->sc_bustag, 733 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 734 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 735 map_vaddr = 0; 736 } else { 737 printf(": can't map control registers\n"); 738 return; 739 } 740 741 establish_chip_type(fdc, 742 fdc->sc_bustag, 743 map_vaddr ? ea->ea_vaddr[0] : 744 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 745 ea->ea_reg[0].size, 746 fdc->sc_handle); 747 748 fdc->sc_flags |= FDC_EBUS; 749 750 if (prom_getproplen(ea->ea_node, "manual") >= 0) 751 fdc->sc_flags |= FDC_NOEJECT; 752 753 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 754 if (map_vaddr == 0) 755 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 756 ea->ea_reg[0].size); 757 } 758 #endif 759 760 int 761 fdcattach(struct fdc_softc *fdc, int pri) 762 { 763 struct fdc_attach_args fa; 764 int drive_attached; 765 char code; 766 767 callout_init(&fdc->sc_timo_ch, 0); 768 callout_init(&fdc->sc_intr_ch, 0); 769 770 fdc->sc_state = DEVIDLE; 771 fdc->sc_itask = FDC_ITASK_NONE; 772 fdc->sc_istatus = FDC_ISTATUS_NONE; 773 fdc->sc_flags |= FDC_EIS; 774 TAILQ_INIT(&fdc->sc_drives); 775 776 if ((fdc->sc_flags & FDC_82077) != 0) { 777 fdc->sc_reg_msr = FDREG77_MSR; 778 fdc->sc_reg_fifo = FDREG77_FIFO; 779 fdc->sc_reg_dor = FDREG77_DOR; 780 fdc->sc_reg_dir = FDREG77_DIR; 781 code = '7'; 782 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 783 } else { 784 fdc->sc_reg_msr = FDREG72_MSR; 785 fdc->sc_reg_fifo = FDREG72_FIFO; 786 fdc->sc_reg_dor = 0; 787 code = '2'; 788 } 789 790 /* 791 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 792 * Note: CFG_EFIFO is active-low, initial threshold value: 8 793 */ 794 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 795 if (fdconf(fdc) != 0) { 796 printf(": no drives attached\n"); 797 return -1; 798 } 799 800 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 801 if (fdc->sc_sicookie == NULL) { 802 aprint_normal("\n"); 803 aprint_error_dev(&fdc->sc_dev, "cannot register soft interrupt handler\n"); 804 callout_stop(&fdc->sc_timo_ch); 805 callout_stop(&fdc->sc_intr_ch); 806 return -1; 807 } 808 #ifdef SUN4 809 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 810 #elif SUN4U 811 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 812 if (fdc->sc_flags & FDC_NOEJECT) 813 printf(": manual eject"); 814 printf("\n"); 815 #endif 816 817 #ifdef SUN4 818 fdciop = &fdc->sc_io; 819 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 820 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 821 #elif SUN4U 822 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 823 fdc_c_hwintr, fdc) == NULL) { 824 #endif 825 aprint_normal("\n"); 826 aprint_error_dev(&fdc->sc_dev, "cannot register interrupt handler\n"); 827 callout_stop(&fdc->sc_timo_ch); 828 callout_stop(&fdc->sc_intr_ch); 829 softint_disestablish(fdc->sc_sicookie); 830 return -1; 831 } 832 833 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 834 device_xname(&fdc->sc_dev), "intr"); 835 836 /* physical limit: four drives per controller. */ 837 drive_attached = 0; 838 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 839 fa.fa_deftype = NULL; /* unknown */ 840 fa.fa_deftype = &fd_types[0]; /* XXX */ 841 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 842 drive_attached = 1; 843 } 844 845 if (drive_attached == 0) { 846 /* XXX - dis-establish interrupts here */ 847 /* return -1; */ 848 } 849 850 return 0; 851 } 852 853 int 854 fdmatch(struct device *parent, struct cfdata *match, void *aux) 855 { 856 struct fdc_softc *fdc = (void *)parent; 857 bus_space_tag_t t = fdc->sc_bustag; 858 bus_space_handle_t h = fdc->sc_handle; 859 struct fdc_attach_args *fa = aux; 860 int drive = fa->fa_drive; 861 int n, ok; 862 863 if (drive > 0) 864 /* XXX - for now, punt on more than one drive */ 865 return 0; 866 867 if ((fdc->sc_flags & FDC_82077) != 0) { 868 /* select drive and turn on motor */ 869 bus_space_write_1(t, h, fdc->sc_reg_dor, 870 drive | FDO_FRST | FDO_MOEN(drive)); 871 /* wait for motor to spin up */ 872 delay(250000); 873 #ifdef SUN4 874 } else { 875 auxregbisc(AUXIO4C_FDS, 0); 876 #endif 877 } 878 fdc->sc_nstat = 0; 879 fdc_wrfifo(fdc, NE7CMD_RECAL); 880 fdc_wrfifo(fdc, drive); 881 882 /* Wait for recalibration to complete */ 883 for (n = 0; n < 10000; n++) { 884 uint8_t v; 885 886 delay(1000); 887 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 888 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 889 /* wait a bit longer till device *really* is ready */ 890 delay(100000); 891 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 892 break; 893 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 894 /* 895 * Got `invalid command'; we interpret it 896 * to mean that the re-calibrate hasn't in 897 * fact finished yet 898 */ 899 continue; 900 break; 901 } 902 } 903 n = fdc->sc_nstat; 904 #ifdef FD_DEBUG 905 if (fdc_debug) { 906 int i; 907 printf("fdprobe: %d stati:", n); 908 for (i = 0; i < n; i++) 909 printf(" 0x%x", fdc->sc_status[i]); 910 printf("\n"); 911 } 912 #endif 913 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 914 915 /* turn off motor */ 916 if ((fdc->sc_flags & FDC_82077) != 0) { 917 /* deselect drive and turn motor off */ 918 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 919 #ifdef SUN4 920 } else { 921 auxregbisc(0, AUXIO4C_FDS); 922 #endif 923 } 924 925 return ok; 926 } 927 928 /* 929 * Controller is working, and drive responded. Attach it. 930 */ 931 void 932 fdattach(struct device *parent, struct device *self, void *aux) 933 { 934 struct fdc_softc *fdc = (void *)parent; 935 struct fd_softc *fd = (void *)self; 936 struct fdc_attach_args *fa = aux; 937 struct fd_type *type = fa->fa_deftype; 938 int drive = fa->fa_drive; 939 940 callout_init(&fd->sc_motoron_ch, 0); 941 callout_init(&fd->sc_motoroff_ch, 0); 942 943 /* XXX Allow `flags' to override device type? */ 944 945 if (type) 946 printf(": %s %d cyl, %d head, %d sec\n", type->name, 947 type->cylinders, type->heads, type->sectrac); 948 else 949 printf(": density unknown\n"); 950 951 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 952 fd->sc_cylin = -1; 953 fd->sc_drive = drive; 954 fd->sc_deftype = type; 955 fdc->sc_fd[drive] = fd; 956 957 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 958 fdc_wrfifo(fdc, type->steprate); 959 /* XXX head load time == 6ms */ 960 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 961 962 /* 963 * Initialize and attach the disk structure. 964 */ 965 disk_init(&fd->sc_dk, device_xname(&fd->sc_dv), &fddkdriver); 966 disk_attach(&fd->sc_dk); 967 968 /* 969 * Establish a mountroot_hook anyway in case we booted 970 * with RB_ASKNAME and get selected as the boot device. 971 */ 972 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 973 974 fd_set_properties(fd); 975 976 /* Make sure the drive motor gets turned off at shutdown time. */ 977 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 978 } 979 980 inline struct fd_type * 981 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 982 { 983 int type = FDTYPE(dev); 984 985 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 986 return NULL; 987 return type ? &fd_types[type - 1] : fd->sc_deftype; 988 } 989 990 void 991 fdstrategy(struct buf *bp) 992 { 993 struct fd_softc *fd; 994 int unit = FDUNIT(bp->b_dev); 995 int sz; 996 int s; 997 998 /* Valid unit, controller, and request? */ 999 if (unit >= fd_cd.cd_ndevs || 1000 (fd = fd_cd.cd_devs[unit]) == 0 || 1001 bp->b_blkno < 0 || 1002 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1003 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1004 (bp->b_flags & B_FORMAT) == 0)) { 1005 bp->b_error = EINVAL; 1006 goto done; 1007 } 1008 1009 /* If it's a null transfer, return immediately. */ 1010 if (bp->b_bcount == 0) 1011 goto done; 1012 1013 sz = howmany(bp->b_bcount, DEV_BSIZE); 1014 1015 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1016 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1017 - bp->b_blkno; 1018 if (sz == 0) { 1019 /* If exactly at end of disk, return EOF. */ 1020 bp->b_resid = bp->b_bcount; 1021 goto done; 1022 } 1023 if (sz < 0) { 1024 /* If past end of disk, return EINVAL. */ 1025 bp->b_error = EINVAL; 1026 goto done; 1027 } 1028 /* Otherwise, truncate request. */ 1029 bp->b_bcount = sz << DEV_BSHIFT; 1030 } 1031 1032 bp->b_rawblkno = bp->b_blkno; 1033 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1034 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1035 1036 #ifdef FD_DEBUG 1037 if (fdc_debug > 1) 1038 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1039 (long long)bp->b_blkno, bp->b_bcount, 1040 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1041 #endif 1042 1043 /* Queue transfer on drive, activate drive and controller if idle. */ 1044 s = splbio(); 1045 BUFQ_PUT(fd->sc_q, bp); 1046 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1047 if (fd->sc_active == 0) 1048 fdstart(fd); 1049 #ifdef DIAGNOSTIC 1050 else { 1051 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1052 if (fdc->sc_state == DEVIDLE) { 1053 printf("fdstrategy: controller inactive\n"); 1054 fdcstart(fdc); 1055 } 1056 } 1057 #endif 1058 splx(s); 1059 return; 1060 1061 done: 1062 /* Toss transfer; we're done early. */ 1063 biodone(bp); 1064 } 1065 1066 void 1067 fdstart(struct fd_softc *fd) 1068 { 1069 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1070 int active = fdc->sc_drives.tqh_first != 0; 1071 1072 /* Link into controller queue. */ 1073 fd->sc_active = 1; 1074 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1075 1076 /* If controller not already active, start it. */ 1077 if (!active) 1078 fdcstart(fdc); 1079 } 1080 1081 void 1082 fdfinish(struct fd_softc *fd, struct buf *bp) 1083 { 1084 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1085 1086 /* 1087 * Move this drive to the end of the queue to give others a `fair' 1088 * chance. We only force a switch if N operations are completed while 1089 * another drive is waiting to be serviced, since there is a long motor 1090 * startup delay whenever we switch. 1091 */ 1092 (void)BUFQ_GET(fd->sc_q); 1093 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1094 fd->sc_ops = 0; 1095 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1096 if (BUFQ_PEEK(fd->sc_q) != NULL) { 1097 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1098 } else 1099 fd->sc_active = 0; 1100 } 1101 bp->b_resid = fd->sc_bcount; 1102 fd->sc_skip = 0; 1103 1104 biodone(bp); 1105 /* turn off motor 5s from now */ 1106 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1107 fdc->sc_state = DEVIDLE; 1108 } 1109 1110 void 1111 fdc_reset(struct fdc_softc *fdc) 1112 { 1113 bus_space_tag_t t = fdc->sc_bustag; 1114 bus_space_handle_t h = fdc->sc_handle; 1115 1116 if ((fdc->sc_flags & FDC_82077) != 0) { 1117 bus_space_write_1(t, h, fdc->sc_reg_dor, 1118 FDO_FDMAEN | FDO_MOEN(0)); 1119 } 1120 1121 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1122 delay(10); 1123 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1124 1125 if ((fdc->sc_flags & FDC_82077) != 0) { 1126 bus_space_write_1(t, h, fdc->sc_reg_dor, 1127 FDO_FRST | FDO_FDMAEN | FDO_DS); 1128 } 1129 #ifdef FD_DEBUG 1130 if (fdc_debug) 1131 printf("fdc reset\n"); 1132 #endif 1133 } 1134 1135 void 1136 fd_set_motor(struct fdc_softc *fdc) 1137 { 1138 struct fd_softc *fd; 1139 u_char status; 1140 int n; 1141 1142 if ((fdc->sc_flags & FDC_82077) != 0) { 1143 status = FDO_FRST | FDO_FDMAEN; 1144 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1145 status |= fd->sc_drive; 1146 1147 for (n = 0; n < 4; n++) 1148 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1149 status |= FDO_MOEN(n); 1150 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1151 fdc->sc_reg_dor, status); 1152 #ifdef SUN4 1153 } else { 1154 1155 for (n = 0; n < 4; n++) { 1156 if ((fd = fdc->sc_fd[n]) != NULL && 1157 (fd->sc_flags & FD_MOTOR) != 0) { 1158 auxregbisc(AUXIO4C_FDS, 0); 1159 return; 1160 } 1161 } 1162 auxregbisc(0, AUXIO4C_FDS); 1163 #endif 1164 } 1165 } 1166 1167 void 1168 fd_motor_off(void *arg) 1169 { 1170 struct fd_softc *fd = arg; 1171 int s; 1172 1173 s = splbio(); 1174 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1175 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1176 splx(s); 1177 } 1178 1179 void 1180 fd_motor_on(void *arg) 1181 { 1182 struct fd_softc *fd = arg; 1183 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1184 int s; 1185 1186 s = splbio(); 1187 fd->sc_flags &= ~FD_MOTOR_WAIT; 1188 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1189 (void)fdcstate(fdc); 1190 splx(s); 1191 } 1192 1193 /* 1194 * Get status bytes off the FDC after a command has finished 1195 * Returns the number of status bytes read; -1 on error. 1196 * The return value is also stored in `sc_nstat'. 1197 */ 1198 int 1199 fdcresult(struct fdc_softc *fdc) 1200 { 1201 bus_space_tag_t t = fdc->sc_bustag; 1202 bus_space_handle_t h = fdc->sc_handle; 1203 int j, n = 0; 1204 1205 for (j = 10000; j; j--) { 1206 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1207 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1208 if (v == NE7_RQM) 1209 return fdc->sc_nstat = n; 1210 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1211 if (n >= sizeof(fdc->sc_status)) { 1212 log(LOG_ERR, "fdcresult: overrun\n"); 1213 return -1; 1214 } 1215 fdc->sc_status[n++] = 1216 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1217 } else 1218 delay(1); 1219 } 1220 1221 log(LOG_ERR, "fdcresult: timeout\n"); 1222 return fdc->sc_nstat = -1; 1223 } 1224 1225 /* 1226 * Write a command byte to the FDC. 1227 * Returns 0 on success; -1 on failure (i.e. timeout) 1228 */ 1229 int 1230 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1231 { 1232 bus_space_tag_t t = fdc->sc_bustag; 1233 bus_space_handle_t h = fdc->sc_handle; 1234 int i; 1235 1236 for (i = 100000; i-- > 0;) { 1237 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1238 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1239 /* The chip is ready */ 1240 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1241 return 0; 1242 } 1243 delay(1); 1244 } 1245 return -1; 1246 } 1247 1248 int 1249 fdc_diskchange(struct fdc_softc *fdc) 1250 { 1251 1252 #ifdef SUN4 1253 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1254 #endif 1255 bus_space_tag_t t = fdc->sc_bustag; 1256 bus_space_handle_t h = fdc->sc_handle; 1257 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1258 return (v & FDI_DCHG) != 0; 1259 #ifdef SUN4 1260 } else if (CPU_ISSUN4C) { 1261 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1262 } 1263 return 0; 1264 #endif 1265 } 1266 1267 int 1268 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1269 { 1270 int unit, pmask; 1271 struct fd_softc *fd; 1272 struct fd_type *type; 1273 1274 unit = FDUNIT(dev); 1275 if (unit >= fd_cd.cd_ndevs) 1276 return ENXIO; 1277 fd = fd_cd.cd_devs[unit]; 1278 if (fd == NULL) 1279 return ENXIO; 1280 type = fd_dev_to_type(fd, dev); 1281 if (type == NULL) 1282 return ENXIO; 1283 1284 if ((fd->sc_flags & FD_OPEN) != 0 && 1285 fd->sc_type != type) 1286 return EBUSY; 1287 1288 fd->sc_type = type; 1289 fd->sc_cylin = -1; 1290 fd->sc_flags |= FD_OPEN; 1291 1292 /* 1293 * Only update the disklabel if we're not open anywhere else. 1294 */ 1295 if (fd->sc_dk.dk_openmask == 0) 1296 fdgetdisklabel(dev); 1297 1298 pmask = (1 << DISKPART(dev)); 1299 1300 switch (fmt) { 1301 case S_IFCHR: 1302 fd->sc_dk.dk_copenmask |= pmask; 1303 break; 1304 1305 case S_IFBLK: 1306 fd->sc_dk.dk_bopenmask |= pmask; 1307 break; 1308 } 1309 fd->sc_dk.dk_openmask = 1310 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1311 1312 return 0; 1313 } 1314 1315 int 1316 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1317 { 1318 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1319 int pmask = (1 << DISKPART(dev)); 1320 1321 fd->sc_flags &= ~FD_OPEN; 1322 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1323 1324 switch (fmt) { 1325 case S_IFCHR: 1326 fd->sc_dk.dk_copenmask &= ~pmask; 1327 break; 1328 1329 case S_IFBLK: 1330 fd->sc_dk.dk_bopenmask &= ~pmask; 1331 break; 1332 } 1333 fd->sc_dk.dk_openmask = 1334 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1335 1336 return 0; 1337 } 1338 1339 int 1340 fdread(dev_t dev, struct uio *uio, int flag) 1341 { 1342 1343 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1344 } 1345 1346 int 1347 fdwrite(dev_t dev, struct uio *uio, int flag) 1348 { 1349 1350 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1351 } 1352 1353 void 1354 fdcstart(struct fdc_softc *fdc) 1355 { 1356 1357 #ifdef DIAGNOSTIC 1358 /* only got here if controller's drive queue was inactive; should 1359 be in idle state */ 1360 if (fdc->sc_state != DEVIDLE) { 1361 printf("fdcstart: not idle\n"); 1362 return; 1363 } 1364 #endif 1365 (void)fdcstate(fdc); 1366 } 1367 1368 void 1369 fdcstatus(struct fdc_softc *fdc, const char *s) 1370 { 1371 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1372 int n; 1373 char bits[64]; 1374 1375 /* Just print last status */ 1376 n = fdc->sc_nstat; 1377 1378 #if 0 1379 /* 1380 * A 82072 seems to return <invalid command> on 1381 * gratuitous Sense Interrupt commands. 1382 */ 1383 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1384 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1385 (void)fdcresult(fdc); 1386 n = 2; 1387 } 1388 #endif 1389 1390 printf("%s: %s: state %d", 1391 fd ? device_xname(&fd->sc_dv) : "fdc", s, fdc->sc_state); 1392 1393 switch (n) { 1394 case 0: 1395 printf("\n"); 1396 break; 1397 case 2: 1398 printf(" (st0 %s cyl %d)\n", 1399 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1400 bits, sizeof(bits)), fdc->sc_status[1]); 1401 break; 1402 case 7: 1403 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1404 NE7_ST0BITS, bits, sizeof(bits))); 1405 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1406 NE7_ST1BITS, bits, sizeof(bits))); 1407 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1408 NE7_ST2BITS, bits, sizeof(bits))); 1409 printf(" cyl %d head %d sec %d)\n", 1410 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1411 break; 1412 #ifdef DIAGNOSTIC 1413 default: 1414 printf(" fdcstatus: weird size: %d\n", n); 1415 break; 1416 #endif 1417 } 1418 } 1419 1420 void 1421 fdctimeout(void *arg) 1422 { 1423 struct fdc_softc *fdc = arg; 1424 struct fd_softc *fd; 1425 int s; 1426 1427 s = splbio(); 1428 fd = fdc->sc_drives.tqh_first; 1429 if (fd == NULL) { 1430 aprint_error_dev(&fdc->sc_dev, "timeout but no I/O pending: state %d, istatus=%d\n", 1431 fdc->sc_state, fdc->sc_istatus); 1432 fdc->sc_state = DEVIDLE; 1433 goto out; 1434 } 1435 1436 if (BUFQ_PEEK(fd->sc_q) != NULL) 1437 fdc->sc_state++; 1438 else 1439 fdc->sc_state = DEVIDLE; 1440 1441 (void)fdcstate(fdc); 1442 out: 1443 splx(s); 1444 1445 } 1446 1447 void 1448 fdcpseudointr(void *arg) 1449 { 1450 struct fdc_softc *fdc = arg; 1451 int s; 1452 1453 /* Just ensure it has the right spl. */ 1454 s = splbio(); 1455 (void)fdcstate(fdc); 1456 splx(s); 1457 } 1458 1459 1460 /* 1461 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1462 * handler is available. Unfortunately, we have no reliable way to 1463 * determine that the interrupt really came from the floppy controller; 1464 * just hope that the other devices that share this interrupt level 1465 * can do better.. 1466 */ 1467 int 1468 fdc_c_hwintr(void *arg) 1469 { 1470 struct fdc_softc *fdc = arg; 1471 bus_space_tag_t t = fdc->sc_bustag; 1472 bus_space_handle_t h = fdc->sc_handle; 1473 1474 switch (fdc->sc_itask) { 1475 case FDC_ITASK_NONE: 1476 return 0; 1477 case FDC_ITASK_SENSEI: 1478 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1479 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1480 else 1481 fdc->sc_istatus = FDC_ISTATUS_DONE; 1482 softint_schedule(fdc->sc_sicookie); 1483 return 1; 1484 case FDC_ITASK_RESULT: 1485 if (fdcresult(fdc) == -1) 1486 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1487 else 1488 fdc->sc_istatus = FDC_ISTATUS_DONE; 1489 softint_schedule(fdc->sc_sicookie); 1490 return 1; 1491 case FDC_ITASK_DMA: 1492 /* Proceed with pseudo-DMA below */ 1493 break; 1494 default: 1495 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1496 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1497 softint_schedule(fdc->sc_sicookie); 1498 return 1; 1499 } 1500 1501 /* 1502 * Pseudo DMA in progress 1503 */ 1504 for (;;) { 1505 uint8_t msr; 1506 1507 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1508 1509 if ((msr & NE7_RQM) == 0) 1510 /* That's all this round. */ 1511 break; 1512 1513 if ((msr & NE7_NDM) == 0) { 1514 /* Execution phase finished, get result. */ 1515 fdcresult(fdc); 1516 fdc->sc_istatus = FDC_ISTATUS_DONE; 1517 softint_schedule(fdc->sc_sicookie); 1518 break; 1519 } 1520 1521 if (fdc->sc_tc == 0) 1522 /* For some reason the controller wants to transfer 1523 more data then what we want to transfer. */ 1524 panic("fdc: overrun"); 1525 1526 /* Another byte can be transferred */ 1527 if ((msr & NE7_DIO) != 0) 1528 *fdc->sc_data = 1529 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1530 else 1531 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1532 *fdc->sc_data); 1533 1534 fdc->sc_data++; 1535 if (--fdc->sc_tc == 0) { 1536 FTC_FLIP; 1537 break; 1538 } 1539 } 1540 return 1; 1541 } 1542 1543 void 1544 fdcswintr(void *arg) 1545 { 1546 struct fdc_softc *fdc = arg; 1547 1548 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1549 /* This (software) interrupt is not for us */ 1550 return; 1551 1552 switch (fdc->sc_istatus) { 1553 case FDC_ISTATUS_ERROR: 1554 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1555 break; 1556 case FDC_ISTATUS_SPURIOUS: 1557 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1558 break; 1559 } 1560 1561 fdcstate(fdc); 1562 return; 1563 } 1564 1565 int 1566 fdcstate(struct fdc_softc *fdc) 1567 { 1568 1569 #define st0 fdc->sc_status[0] 1570 #define st1 fdc->sc_status[1] 1571 #define cyl fdc->sc_status[1] 1572 #define FDC_WRFIFO(fdc, c) do { \ 1573 if (fdc_wrfifo(fdc, (c))) { \ 1574 goto xxx; \ 1575 } \ 1576 } while(0) 1577 1578 struct fd_softc *fd; 1579 struct buf *bp; 1580 int read, head, sec, nblks; 1581 struct fd_type *type; 1582 struct ne7_fd_formb *finfo = NULL; 1583 1584 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1585 /* Prevent loop if the reset sequence produces errors */ 1586 if (fdc->sc_state != RESETCOMPLETE && 1587 fdc->sc_state != RECALWAIT && 1588 fdc->sc_state != RECALCOMPLETE) 1589 fdc->sc_state = DORESET; 1590 } 1591 1592 /* Clear I task/status field */ 1593 fdc->sc_istatus = FDC_ISTATUS_NONE; 1594 fdc->sc_itask = FDC_ITASK_NONE; 1595 1596 loop: 1597 /* Is there a drive for the controller to do a transfer with? */ 1598 fd = fdc->sc_drives.tqh_first; 1599 if (fd == NULL) { 1600 fdc->sc_state = DEVIDLE; 1601 return 0; 1602 } 1603 1604 /* Is there a transfer to this drive? If not, deactivate drive. */ 1605 bp = BUFQ_PEEK(fd->sc_q); 1606 if (bp == NULL) { 1607 fd->sc_ops = 0; 1608 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1609 fd->sc_active = 0; 1610 goto loop; 1611 } 1612 1613 if (bp->b_flags & B_FORMAT) 1614 finfo = (struct ne7_fd_formb *)bp->b_data; 1615 1616 switch (fdc->sc_state) { 1617 case DEVIDLE: 1618 fdc->sc_errors = 0; 1619 fd->sc_skip = 0; 1620 fd->sc_bcount = bp->b_bcount; 1621 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1622 callout_stop(&fd->sc_motoroff_ch); 1623 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1624 fdc->sc_state = MOTORWAIT; 1625 return 1; 1626 } 1627 if ((fd->sc_flags & FD_MOTOR) == 0) { 1628 /* Turn on the motor, being careful about pairing. */ 1629 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1630 if (ofd && ofd->sc_flags & FD_MOTOR) { 1631 callout_stop(&ofd->sc_motoroff_ch); 1632 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1633 } 1634 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1635 fd_set_motor(fdc); 1636 fdc->sc_state = MOTORWAIT; 1637 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1638 /* Allow .25s for motor to stabilize. */ 1639 callout_reset(&fd->sc_motoron_ch, hz / 4, 1640 fd_motor_on, fd); 1641 } else { 1642 fd->sc_flags &= ~FD_MOTOR_WAIT; 1643 goto loop; 1644 } 1645 return 1; 1646 } 1647 /* Make sure the right drive is selected. */ 1648 fd_set_motor(fdc); 1649 1650 if (fdc_diskchange(fdc)) 1651 goto dodskchg; 1652 1653 /*FALLTHROUGH*/ 1654 case DOSEEK: 1655 doseek: 1656 if ((fdc->sc_flags & FDC_EIS) && 1657 (bp->b_flags & B_FORMAT) == 0) { 1658 fd->sc_cylin = bp->b_cylinder; 1659 /* We use implied seek */ 1660 goto doio; 1661 } 1662 1663 if (fd->sc_cylin == bp->b_cylinder) 1664 goto doio; 1665 1666 fd->sc_cylin = -1; 1667 fdc->sc_state = SEEKWAIT; 1668 fdc->sc_nstat = 0; 1669 1670 iostat_seek(fd->sc_dk.dk_stats); 1671 1672 disk_busy(&fd->sc_dk); 1673 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1674 1675 /* specify command */ 1676 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1677 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1678 /* XXX head load time == 6ms */ 1679 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1680 1681 fdc->sc_itask = FDC_ITASK_SENSEI; 1682 /* seek function */ 1683 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1684 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1685 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1686 return 1; 1687 1688 case DODSKCHG: 1689 dodskchg: 1690 /* 1691 * Disk change: force a seek operation by going to cyl 1 1692 * followed by a recalibrate. 1693 */ 1694 disk_busy(&fd->sc_dk); 1695 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1696 fd->sc_cylin = -1; 1697 fdc->sc_nstat = 0; 1698 fdc->sc_state = DSKCHGWAIT; 1699 1700 fdc->sc_itask = FDC_ITASK_SENSEI; 1701 /* seek function */ 1702 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1703 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1704 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1705 return 1; 1706 1707 case DSKCHGWAIT: 1708 callout_stop(&fdc->sc_timo_ch); 1709 disk_unbusy(&fd->sc_dk, 0, 0); 1710 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1711 cyl != 1 * fd->sc_type->step) { 1712 fdcstatus(fdc, "dskchg seek failed"); 1713 fdc->sc_state = DORESET; 1714 } else 1715 fdc->sc_state = DORECAL; 1716 1717 if (fdc_diskchange(fdc)) { 1718 aprint_error_dev(&fdc->sc_dev, "cannot clear disk change status\n"); 1719 fdc->sc_state = DORESET; 1720 } 1721 goto loop; 1722 1723 case DOIO: 1724 doio: 1725 if (finfo != NULL) 1726 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1727 (char *)finfo; 1728 type = fd->sc_type; 1729 sec = fd->sc_blkno % type->seccyl; 1730 nblks = type->seccyl - sec; 1731 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1732 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1733 fd->sc_nblks = nblks; 1734 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1735 head = sec / type->sectrac; 1736 sec -= head * type->sectrac; 1737 #ifdef DIAGNOSTIC 1738 {int block; 1739 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1740 sec; 1741 if (block != fd->sc_blkno) { 1742 printf("fdcintr: block %d != blkno %d\n", block, 1743 (int)fd->sc_blkno); 1744 #ifdef DDB 1745 Debugger(); 1746 #endif 1747 }} 1748 #endif 1749 read = bp->b_flags & B_READ; 1750 1751 /* Setup for pseudo DMA */ 1752 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1753 fdc->sc_tc = fd->sc_nbytes; 1754 1755 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1756 fdc->sc_reg_drs, type->rate); 1757 #ifdef FD_DEBUG 1758 if (fdc_debug > 1) 1759 printf("fdcstate: doio: %s drive %d " 1760 "track %d head %d sec %d nblks %d\n", 1761 finfo ? "format" : 1762 (read ? "read" : "write"), 1763 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1764 #endif 1765 fdc->sc_state = IOCOMPLETE; 1766 fdc->sc_itask = FDC_ITASK_DMA; 1767 fdc->sc_nstat = 0; 1768 1769 disk_busy(&fd->sc_dk); 1770 1771 /* allow 3 seconds for operation */ 1772 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1773 1774 if (finfo != NULL) { 1775 /* formatting */ 1776 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1777 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1778 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1779 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1780 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1781 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1782 } else { 1783 if (read) 1784 FDC_WRFIFO(fdc, NE7CMD_READ); 1785 else 1786 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1787 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1788 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1789 FDC_WRFIFO(fdc, head); 1790 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1791 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1792 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1793 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1794 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1795 } 1796 1797 return 1; /* will return later */ 1798 1799 case SEEKWAIT: 1800 callout_stop(&fdc->sc_timo_ch); 1801 fdc->sc_state = SEEKCOMPLETE; 1802 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1803 /* allow 1/50 second for heads to settle */ 1804 callout_reset(&fdc->sc_intr_ch, hz / 50, 1805 fdcpseudointr, fdc); 1806 return 1; /* will return later */ 1807 } 1808 /*FALLTHROUGH*/ 1809 case SEEKCOMPLETE: 1810 /* no data on seek */ 1811 disk_unbusy(&fd->sc_dk, 0, 0); 1812 1813 /* Make sure seek really happened. */ 1814 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1815 cyl != bp->b_cylinder * fd->sc_type->step) { 1816 #ifdef FD_DEBUG 1817 if (fdc_debug) 1818 fdcstatus(fdc, "seek failed"); 1819 #endif 1820 fdcretry(fdc); 1821 goto loop; 1822 } 1823 fd->sc_cylin = bp->b_cylinder; 1824 goto doio; 1825 1826 case IOTIMEDOUT: 1827 /* 1828 * Try to abort the I/O operation without resetting 1829 * the chip first. Poke TC and arrange to pick up 1830 * the timed out I/O command's status. 1831 */ 1832 fdc->sc_itask = FDC_ITASK_RESULT; 1833 fdc->sc_state = IOCLEANUPWAIT; 1834 fdc->sc_nstat = 0; 1835 /* 1/10 second should be enough */ 1836 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1837 FTC_FLIP; 1838 return 1; 1839 1840 case IOCLEANUPTIMEDOUT: 1841 case SEEKTIMEDOUT: 1842 case RECALTIMEDOUT: 1843 case RESETTIMEDOUT: 1844 case DSKCHGTIMEDOUT: 1845 fdcstatus(fdc, "timeout"); 1846 1847 /* All other timeouts always roll through to a chip reset */ 1848 fdcretry(fdc); 1849 1850 /* Force reset, no matter what fdcretry() says */ 1851 fdc->sc_state = DORESET; 1852 goto loop; 1853 1854 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1855 callout_stop(&fdc->sc_timo_ch); 1856 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1857 (bp->b_flags & B_READ)); 1858 fdcretry(fdc); 1859 goto loop; 1860 1861 case IOCOMPLETE: /* IO DONE, post-analyze */ 1862 callout_stop(&fdc->sc_timo_ch); 1863 1864 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1865 (bp->b_flags & B_READ)); 1866 1867 if (fdc->sc_nstat != 7 || st1 != 0 || 1868 ((st0 & 0xf8) != 0 && 1869 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1870 #ifdef FD_DEBUG 1871 if (fdc_debug) { 1872 fdcstatus(fdc, bp->b_flags & B_READ ? 1873 "read failed" : "write failed"); 1874 printf("blkno %lld nblks %d nstat %d tc %d\n", 1875 (long long)fd->sc_blkno, fd->sc_nblks, 1876 fdc->sc_nstat, fdc->sc_tc); 1877 } 1878 #endif 1879 if (fdc->sc_nstat == 7 && 1880 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1881 1882 /* 1883 * Silently retry overruns if no other 1884 * error bit is set. Adjust threshold. 1885 */ 1886 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1887 if (thr < 15) { 1888 thr++; 1889 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1890 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1891 #ifdef FD_DEBUG 1892 if (fdc_debug) 1893 printf("fdc: %d -> threshold\n", 1894 thr); 1895 #endif 1896 fdconf(fdc); 1897 fdc->sc_overruns = 0; 1898 } 1899 if (++fdc->sc_overruns < 3) { 1900 fdc->sc_state = DOIO; 1901 goto loop; 1902 } 1903 } 1904 fdcretry(fdc); 1905 goto loop; 1906 } 1907 if (fdc->sc_errors) { 1908 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1909 fd->sc_skip / FD_BSIZE(fd), 1910 (struct disklabel *)NULL); 1911 printf("\n"); 1912 fdc->sc_errors = 0; 1913 } else { 1914 if (--fdc->sc_overruns < -20) { 1915 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1916 if (thr > 0) { 1917 thr--; 1918 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1919 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1920 #ifdef FD_DEBUG 1921 if (fdc_debug) 1922 printf("fdc: %d -> threshold\n", 1923 thr); 1924 #endif 1925 fdconf(fdc); 1926 } 1927 fdc->sc_overruns = 0; 1928 } 1929 } 1930 fd->sc_blkno += fd->sc_nblks; 1931 fd->sc_skip += fd->sc_nbytes; 1932 fd->sc_bcount -= fd->sc_nbytes; 1933 if (finfo == NULL && fd->sc_bcount > 0) { 1934 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1935 goto doseek; 1936 } 1937 fdfinish(fd, bp); 1938 goto loop; 1939 1940 case DORESET: 1941 /* try a reset, keep motor on */ 1942 fd_set_motor(fdc); 1943 delay(100); 1944 fdc->sc_nstat = 0; 1945 fdc->sc_itask = FDC_ITASK_SENSEI; 1946 fdc->sc_state = RESETCOMPLETE; 1947 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1948 fdc_reset(fdc); 1949 return 1; /* will return later */ 1950 1951 case RESETCOMPLETE: 1952 callout_stop(&fdc->sc_timo_ch); 1953 fdconf(fdc); 1954 1955 /* FALLTHROUGH */ 1956 case DORECAL: 1957 fdc->sc_state = RECALWAIT; 1958 fdc->sc_itask = FDC_ITASK_SENSEI; 1959 fdc->sc_nstat = 0; 1960 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1961 /* recalibrate function */ 1962 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1963 FDC_WRFIFO(fdc, fd->sc_drive); 1964 return 1; /* will return later */ 1965 1966 case RECALWAIT: 1967 callout_stop(&fdc->sc_timo_ch); 1968 fdc->sc_state = RECALCOMPLETE; 1969 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1970 /* allow 1/30 second for heads to settle */ 1971 callout_reset(&fdc->sc_intr_ch, hz / 30, 1972 fdcpseudointr, fdc); 1973 return 1; /* will return later */ 1974 } 1975 1976 case RECALCOMPLETE: 1977 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1978 #ifdef FD_DEBUG 1979 if (fdc_debug) 1980 fdcstatus(fdc, "recalibrate failed"); 1981 #endif 1982 fdcretry(fdc); 1983 goto loop; 1984 } 1985 fd->sc_cylin = 0; 1986 goto doseek; 1987 1988 case MOTORWAIT: 1989 if (fd->sc_flags & FD_MOTOR_WAIT) 1990 return 1; /* time's not up yet */ 1991 goto doseek; 1992 1993 default: 1994 fdcstatus(fdc, "stray interrupt"); 1995 return 1; 1996 } 1997 #ifdef DIAGNOSTIC 1998 panic("fdcintr: impossible"); 1999 #endif 2000 2001 xxx: 2002 /* 2003 * We get here if the chip locks up in FDC_WRFIFO() 2004 * Cancel any operation and schedule a reset 2005 */ 2006 callout_stop(&fdc->sc_timo_ch); 2007 fdcretry(fdc); 2008 fdc->sc_state = DORESET; 2009 goto loop; 2010 2011 #undef st0 2012 #undef st1 2013 #undef cyl 2014 } 2015 2016 void 2017 fdcretry(struct fdc_softc *fdc) 2018 { 2019 struct fd_softc *fd; 2020 struct buf *bp; 2021 int error = EIO; 2022 2023 fd = fdc->sc_drives.tqh_first; 2024 bp = BUFQ_PEEK(fd->sc_q); 2025 2026 fdc->sc_overruns = 0; 2027 if (fd->sc_opts & FDOPT_NORETRY) 2028 goto fail; 2029 2030 switch (fdc->sc_errors) { 2031 case 0: 2032 if (fdc->sc_nstat == 7 && 2033 (fdc->sc_status[0] & 0xd8) == 0x40 && 2034 (fdc->sc_status[1] & 0x2) == 0x2) { 2035 aprint_error_dev(&fdc->sc_dev, "read-only medium\n"); 2036 error = EROFS; 2037 goto failsilent; 2038 } 2039 /* try again */ 2040 fdc->sc_state = 2041 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2042 break; 2043 2044 case 1: case 2: case 3: 2045 /* didn't work; try recalibrating */ 2046 fdc->sc_state = DORECAL; 2047 break; 2048 2049 case 4: 2050 if (fdc->sc_nstat == 7 && 2051 fdc->sc_status[0] == 0 && 2052 fdc->sc_status[1] == 0 && 2053 fdc->sc_status[2] == 0) { 2054 /* 2055 * We've retried a few times and we've got 2056 * valid status and all three status bytes 2057 * are zero. Assume this condition is the 2058 * result of no disk loaded into the drive. 2059 */ 2060 aprint_error_dev(&fdc->sc_dev, "no medium?\n"); 2061 error = ENODEV; 2062 goto failsilent; 2063 } 2064 2065 /* still no go; reset the bastard */ 2066 fdc->sc_state = DORESET; 2067 break; 2068 2069 default: 2070 fail: 2071 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2072 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2073 fd->sc_skip / FD_BSIZE(fd), 2074 (struct disklabel *)NULL); 2075 printf("\n"); 2076 fdcstatus(fdc, "controller status"); 2077 } 2078 2079 failsilent: 2080 bp->b_error = error; 2081 fdfinish(fd, bp); 2082 } 2083 fdc->sc_errors++; 2084 } 2085 2086 int 2087 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2088 { 2089 struct fd_softc *fd; 2090 struct fdc_softc *fdc; 2091 struct fdformat_parms *form_parms; 2092 struct fdformat_cmd *form_cmd; 2093 struct ne7_fd_formb *fd_formb; 2094 int il[FD_MAX_NSEC + 1]; 2095 int unit; 2096 int i, j; 2097 int error; 2098 2099 unit = FDUNIT(dev); 2100 if (unit >= fd_cd.cd_ndevs) 2101 return ENXIO; 2102 2103 fd = fd_cd.cd_devs[FDUNIT(dev)]; 2104 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 2105 2106 switch (cmd) { 2107 case DIOCGDINFO: 2108 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2109 return 0; 2110 2111 case DIOCWLABEL: 2112 if ((flag & FWRITE) == 0) 2113 return EBADF; 2114 /* XXX do something */ 2115 return 0; 2116 2117 case DIOCWDINFO: 2118 if ((flag & FWRITE) == 0) 2119 return EBADF; 2120 2121 error = setdisklabel(fd->sc_dk.dk_label, 2122 (struct disklabel *)addr, 0, 2123 fd->sc_dk.dk_cpulabel); 2124 if (error) 2125 return error; 2126 2127 error = writedisklabel(dev, fdstrategy, 2128 fd->sc_dk.dk_label, 2129 fd->sc_dk.dk_cpulabel); 2130 return error; 2131 2132 case DIOCLOCK: 2133 /* 2134 * Nothing to do here, really. 2135 */ 2136 return 0; 2137 2138 case DIOCEJECT: 2139 if (*(int *)addr == 0) { 2140 int part = DISKPART(dev); 2141 /* 2142 * Don't force eject: check that we are the only 2143 * partition open. If so, unlock it. 2144 */ 2145 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2146 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2147 fd->sc_dk.dk_openmask) { 2148 return EBUSY; 2149 } 2150 } 2151 /* FALLTHROUGH */ 2152 case ODIOCEJECT: 2153 if (fdc->sc_flags & FDC_NOEJECT) 2154 return EINVAL; 2155 fd_do_eject(fd); 2156 return 0; 2157 2158 case FDIOCGETFORMAT: 2159 form_parms = (struct fdformat_parms *)addr; 2160 form_parms->fdformat_version = FDFORMAT_VERSION; 2161 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2162 form_parms->ncyl = fd->sc_type->cylinders; 2163 form_parms->nspt = fd->sc_type->sectrac; 2164 form_parms->ntrk = fd->sc_type->heads; 2165 form_parms->stepspercyl = fd->sc_type->step; 2166 form_parms->gaplen = fd->sc_type->gap2; 2167 form_parms->fillbyte = fd->sc_type->fillbyte; 2168 form_parms->interleave = fd->sc_type->interleave; 2169 switch (fd->sc_type->rate) { 2170 case FDC_500KBPS: 2171 form_parms->xfer_rate = 500 * 1024; 2172 break; 2173 case FDC_300KBPS: 2174 form_parms->xfer_rate = 300 * 1024; 2175 break; 2176 case FDC_250KBPS: 2177 form_parms->xfer_rate = 250 * 1024; 2178 break; 2179 default: 2180 return EINVAL; 2181 } 2182 return 0; 2183 2184 case FDIOCSETFORMAT: 2185 if ((flag & FWRITE) == 0) 2186 return EBADF; /* must be opened for writing */ 2187 2188 form_parms = (struct fdformat_parms *)addr; 2189 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2190 return EINVAL;/* wrong version of formatting prog */ 2191 2192 i = form_parms->nbps >> 7; 2193 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2194 i & ~(1 << (ffs(i)-1))) 2195 /* not a power-of-two multiple of 128 */ 2196 return EINVAL; 2197 2198 switch (form_parms->xfer_rate) { 2199 case 500 * 1024: 2200 fd->sc_type->rate = FDC_500KBPS; 2201 break; 2202 case 300 * 1024: 2203 fd->sc_type->rate = FDC_300KBPS; 2204 break; 2205 case 250 * 1024: 2206 fd->sc_type->rate = FDC_250KBPS; 2207 break; 2208 default: 2209 return EINVAL; 2210 } 2211 2212 if (form_parms->nspt > FD_MAX_NSEC || 2213 form_parms->fillbyte > 0xff || 2214 form_parms->interleave > 0xff) 2215 return EINVAL; 2216 fd->sc_type->sectrac = form_parms->nspt; 2217 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2218 return EINVAL; 2219 fd->sc_type->heads = form_parms->ntrk; 2220 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2221 fd->sc_type->secsize = ffs(i)-1; 2222 fd->sc_type->gap2 = form_parms->gaplen; 2223 fd->sc_type->cylinders = form_parms->ncyl; 2224 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2225 form_parms->nbps / DEV_BSIZE; 2226 fd->sc_type->step = form_parms->stepspercyl; 2227 fd->sc_type->fillbyte = form_parms->fillbyte; 2228 fd->sc_type->interleave = form_parms->interleave; 2229 return 0; 2230 2231 case FDIOCFORMAT_TRACK: 2232 if((flag & FWRITE) == 0) 2233 /* must be opened for writing */ 2234 return EBADF; 2235 form_cmd = (struct fdformat_cmd *)addr; 2236 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2237 /* wrong version of formatting prog */ 2238 return EINVAL; 2239 2240 if (form_cmd->head >= fd->sc_type->heads || 2241 form_cmd->cylinder >= fd->sc_type->cylinders) { 2242 return EINVAL; 2243 } 2244 2245 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2246 M_TEMP, M_NOWAIT); 2247 if (fd_formb == 0) 2248 return ENOMEM; 2249 2250 fd_formb->head = form_cmd->head; 2251 fd_formb->cyl = form_cmd->cylinder; 2252 fd_formb->transfer_rate = fd->sc_type->rate; 2253 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2254 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2255 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2256 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2257 2258 bzero(il, sizeof il); 2259 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2260 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2261 j++; 2262 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2263 j += fd->sc_type->interleave; 2264 } 2265 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2266 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2267 fd_formb->fd_formb_headno(i) = form_cmd->head; 2268 fd_formb->fd_formb_secno(i) = il[i + 1]; 2269 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2270 } 2271 2272 error = fdformat(dev, fd_formb, l->l_proc); 2273 free(fd_formb, M_TEMP); 2274 return error; 2275 2276 case FDIOCGETOPTS: /* get drive options */ 2277 *(int *)addr = fd->sc_opts; 2278 return 0; 2279 2280 case FDIOCSETOPTS: /* set drive options */ 2281 fd->sc_opts = *(int *)addr; 2282 return 0; 2283 2284 #ifdef FD_DEBUG 2285 case _IO('f', 100): 2286 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2287 fdcresult(fdc); 2288 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2289 for (i = 0; i < fdc->sc_nstat; i++) 2290 printf(" 0x%x", fdc->sc_status[i]); 2291 printf(">\n"); 2292 return 0; 2293 2294 case _IOW('f', 101, int): 2295 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2296 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2297 fdconf(fdc); 2298 return 0; 2299 2300 case _IO('f', 102): 2301 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2302 fdcresult(fdc); 2303 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2304 for (i=0; i< fdc->sc_nstat; i++) 2305 printf(" 0x%x", fdc->sc_status[i]); 2306 printf(">\n"); 2307 return 0; 2308 #endif 2309 default: 2310 return ENOTTY; 2311 } 2312 2313 #ifdef DIAGNOSTIC 2314 panic("fdioctl: impossible"); 2315 #endif 2316 } 2317 2318 int 2319 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2320 { 2321 int rv = 0; 2322 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2323 struct fd_type *type = fd->sc_type; 2324 struct buf *bp; 2325 2326 /* set up a buffer header for fdstrategy() */ 2327 bp = getiobuf(NULL, false); 2328 if (bp == NULL) 2329 return ENOBUFS; 2330 2331 bp->b_vp = NULL; 2332 bp->b_cflags = BC_BUSY; 2333 bp->b_flags = B_PHYS | B_FORMAT; 2334 bp->b_proc = p; 2335 bp->b_dev = dev; 2336 2337 /* 2338 * Calculate a fake blkno, so fdstrategy() would initiate a 2339 * seek to the requested cylinder. 2340 */ 2341 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2342 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2343 / DEV_BSIZE; 2344 2345 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2346 bp->b_data = (void *)finfo; 2347 2348 #ifdef FD_DEBUG 2349 if (fdc_debug) { 2350 int i; 2351 2352 printf("fdformat: blkno 0x%llx count %d\n", 2353 (unsigned long long)bp->b_blkno, bp->b_bcount); 2354 2355 printf("\tcyl:\t%d\n", finfo->cyl); 2356 printf("\thead:\t%d\n", finfo->head); 2357 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2358 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2359 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2360 printf("\ttrack data:"); 2361 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2362 printf(" [c%d h%d s%d]", 2363 finfo->fd_formb_cylno(i), 2364 finfo->fd_formb_headno(i), 2365 finfo->fd_formb_secno(i) ); 2366 if (finfo->fd_formb_secsize(i) != 2) 2367 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2368 } 2369 printf("\n"); 2370 } 2371 #endif 2372 2373 /* now do the format */ 2374 fdstrategy(bp); 2375 2376 /* ...and wait for it to complete */ 2377 rv = biowait(bp); 2378 putiobuf(bp); 2379 return rv; 2380 } 2381 2382 void 2383 fdgetdisklabel(dev_t dev) 2384 { 2385 int unit = FDUNIT(dev), i; 2386 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2387 struct disklabel *lp = fd->sc_dk.dk_label; 2388 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2389 2390 bzero(lp, sizeof(struct disklabel)); 2391 bzero(lp, sizeof(struct cpu_disklabel)); 2392 2393 lp->d_type = DTYPE_FLOPPY; 2394 lp->d_secsize = FD_BSIZE(fd); 2395 lp->d_secpercyl = fd->sc_type->seccyl; 2396 lp->d_nsectors = fd->sc_type->sectrac; 2397 lp->d_ncylinders = fd->sc_type->cylinders; 2398 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2399 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2400 lp->d_rpm = 300; /* XXX like it matters... */ 2401 2402 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2403 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2404 lp->d_interleave = 1; 2405 lp->d_flags = D_REMOVABLE; 2406 2407 lp->d_partitions[RAW_PART].p_offset = 0; 2408 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2409 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2410 lp->d_npartitions = RAW_PART + 1; 2411 2412 lp->d_magic = DISKMAGIC; 2413 lp->d_magic2 = DISKMAGIC; 2414 lp->d_checksum = dkcksum(lp); 2415 2416 /* 2417 * Call the generic disklabel extraction routine. If there's 2418 * not a label there, fake it. 2419 */ 2420 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2421 strncpy(lp->d_packname, "default label", 2422 sizeof(lp->d_packname)); 2423 /* 2424 * Reset the partition info; it might have gotten 2425 * trashed in readdisklabel(). 2426 * 2427 * XXX Why do we have to do this? readdisklabel() 2428 * should be safe... 2429 */ 2430 for (i = 0; i < MAXPARTITIONS; ++i) { 2431 lp->d_partitions[i].p_offset = 0; 2432 if (i == RAW_PART) { 2433 lp->d_partitions[i].p_size = 2434 lp->d_secpercyl * lp->d_ncylinders; 2435 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2436 } else { 2437 lp->d_partitions[i].p_size = 0; 2438 lp->d_partitions[i].p_fstype = FS_UNUSED; 2439 } 2440 } 2441 lp->d_npartitions = RAW_PART + 1; 2442 } 2443 } 2444 2445 void 2446 fd_do_eject(struct fd_softc *fd) 2447 { 2448 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2449 2450 #ifdef SUN4 2451 if (CPU_ISSUN4C) { 2452 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2453 delay(10); 2454 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2455 return; 2456 } 2457 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2458 #endif 2459 bus_space_tag_t t = fdc->sc_bustag; 2460 bus_space_handle_t h = fdc->sc_handle; 2461 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2462 2463 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2464 delay(10); 2465 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2466 return; 2467 #ifdef SUN4 2468 } 2469 #endif 2470 } 2471 2472 /* ARGSUSED */ 2473 void 2474 fd_mountroot_hook(struct device *dev) 2475 { 2476 int c; 2477 2478 fd_do_eject((struct fd_softc *)dev); 2479 printf("Insert filesystem floppy and press return."); 2480 for (;;) { 2481 c = cngetc(); 2482 if ((c == '\r') || (c == '\n')) { 2483 printf("\n"); 2484 break; 2485 } 2486 } 2487 } 2488 2489 #ifdef MEMORY_DISK_HOOKS 2490 2491 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2492 2493 int 2494 fd_read_md_image(size_t *sizep, void **addrp) 2495 { 2496 struct buf buf, *bp = &buf; 2497 dev_t dev; 2498 off_t offset; 2499 char *addr; 2500 2501 dev = makedev(54,0); /* XXX */ 2502 2503 MALLOC(addr, void *, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2504 *addrp = addr; 2505 2506 if (fdopen(dev, 0, S_IFCHR, NULL)) 2507 panic("fd: mountroot: fdopen"); 2508 2509 offset = 0; 2510 2511 for (;;) { 2512 bp->b_dev = dev; 2513 bp->b_error = 0; 2514 bp->b_resid = 0; 2515 bp->b_proc = NULL; 2516 bp->b_cflags = BC_BUSY; 2517 bp->b_flags = B_PHYS | B_RAW | B_READ; 2518 bp->b_blkno = btodb(offset); 2519 bp->b_bcount = DEV_BSIZE; 2520 bp->b_data = addr; 2521 fdstrategy(bp); 2522 biowait(bp); 2523 if (bp->b_error) 2524 panic("fd: mountroot: fdread error %d", bp->b_error); 2525 2526 if (bp->b_resid != 0) 2527 break; 2528 2529 addr += DEV_BSIZE; 2530 offset += DEV_BSIZE; 2531 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2532 break; 2533 } 2534 (void)fdclose(dev, 0, S_IFCHR, NULL); 2535 *sizep = offset; 2536 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2537 return 0; 2538 } 2539 #endif /* MEMORY_DISK_HOOKS */ 2540 2541 static void 2542 fd_set_properties(struct fd_softc *fd) 2543 { 2544 prop_dictionary_t disk_info, odisk_info, geom; 2545 struct fd_type *fdt; 2546 int secsize; 2547 2548 fdt = fd->sc_deftype; 2549 2550 disk_info = prop_dictionary_create(); 2551 2552 geom = prop_dictionary_create(); 2553 2554 prop_dictionary_set_uint64(geom, "sectors-per-unit", 2555 fdt->size); 2556 2557 switch (fdt->secsize) { 2558 case 2: 2559 secsize = 512; 2560 break; 2561 case 3: 2562 secsize = 1024; 2563 break; 2564 default: 2565 secsize = 0; 2566 } 2567 2568 prop_dictionary_set_uint32(geom, "sector-size", 2569 secsize); 2570 2571 prop_dictionary_set_uint16(geom, "sectors-per-track", 2572 fdt->sectrac); 2573 2574 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 2575 fdt->heads); 2576 2577 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 2578 fdt->cylinders); 2579 2580 prop_dictionary_set(disk_info, "geometry", geom); 2581 prop_object_release(geom); 2582 2583 prop_dictionary_set(device_properties(&fd->sc_dv), 2584 "disk-info", disk_info); 2585 2586 /* 2587 * Don't release disk_info here; we keep a reference to it. 2588 * disk_detach() will release it when we go away. 2589 */ 2590 2591 odisk_info = fd->sc_dk.dk_info; 2592 fd->sc_dk.dk_info = disk_info; 2593 if (odisk_info) 2594 prop_object_release(odisk_info); 2595 } 2596
Indexes created Tue Sep 30 07:10:03 GMT 2025