fdc.c revision 1.28
1 /* $NetBSD: fdc.c,v 1.28 2008/12/17 20:51:32 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 * 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 1.28 2008/12/17 20:51:32 cegger 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 <sparc/sparc/auxreg.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 struct device 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(struct device *, struct cfdata *, void*); 234 int fdcmatch_obio(struct device *, struct cfdata *, void *); 235 void fdcattach_mainbus(struct device *, struct device *, void *); 236 void fdcattach_obio(struct device *, struct device *, void *); 237 #elif SUN4U 238 int fdcmatch_sbus(struct device *, struct cfdata *, void *); 239 int fdcmatch_ebus(struct device *, struct cfdata *, void *); 240 void fdcattach_sbus(struct device *, struct device *, void *); 241 void fdcattach_ebus(struct device *, struct device *, void *); 242 #endif 243 244 int fdcattach(struct fdc_softc *, int); 245 246 #ifdef SUN4 247 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 248 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 249 250 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 251 fdcmatch_obio, fdcattach_obio, NULL, NULL); 252 #elif SUN4U 253 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc), 254 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 255 256 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc), 257 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 258 #endif 259 260 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 struct device sc_dv; /* 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 void *sc_sdhook; /* shutdownhook cookie */ 318 319 TAILQ_ENTRY(fd_softc) sc_drivechain; 320 int sc_ops; /* I/O ops since last switch */ 321 struct bufq_state *sc_q;/* pending I/O requests */ 322 int sc_active; /* number of active I/O requests */ 323 }; 324 325 /* floppy driver configuration */ 326 int fdmatch(struct device *, struct cfdata *, void *); 327 void fdattach(struct device *, struct device *, void *); 328 329 CFATTACH_DECL(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 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 343 }; 344 345 const struct cdevsw fd_cdevsw = { 346 fdopen, fdclose, fdread, fdwrite, fdioctl, 347 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 348 }; 349 350 void fdgetdisklabel(dev_t); 351 int fd_get_parms(struct fd_softc *); 352 void fdstrategy(struct buf *); 353 void fdstart(struct fd_softc *); 354 int fdprint(void *, const char *); 355 356 struct dkdriver fddkdriver = { fdstrategy, NULL }; 357 358 struct fd_type *fd_nvtotype(char *, int, int); 359 void fd_set_motor(struct fdc_softc *); 360 void fd_motor_off(void *); 361 void fd_motor_on(void *); 362 int fdcresult(struct fdc_softc *); 363 int fdc_wrfifo(struct fdc_softc *, uint8_t); 364 void fdcstart(struct fdc_softc *); 365 void fdcstatus(struct fdc_softc *, const char *); 366 void fdc_reset(struct fdc_softc *); 367 int fdc_diskchange(struct fdc_softc *); 368 void fdctimeout(void *); 369 void fdcpseudointr(void *); 370 int fdc_c_hwintr(void *); 371 void fdchwintr(void); 372 void fdcswintr(void *); 373 int fdcstate(struct fdc_softc *); 374 void fdcretry(struct fdc_softc *); 375 void fdfinish(struct fd_softc *, struct buf *); 376 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 377 void fd_do_eject(struct fd_softc *); 378 void fd_mountroot_hook(struct device *); 379 static int fdconf(struct fdc_softc *); 380 static void establish_chip_type( 381 struct fdc_softc *, 382 bus_space_tag_t, 383 bus_addr_t, 384 bus_size_t, 385 bus_space_handle_t); 386 static void fd_set_properties(struct fd_softc *); 387 388 #ifdef MEMORY_DISK_HOOKS 389 int fd_read_md_image(size_t *, void **); 390 #endif 391 392 #ifdef SUN4 393 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 394 395 int 396 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 397 { 398 struct mainbus_attach_args *ma = aux; 399 400 /* 401 * Floppy controller is on mainbus on sun4c. 402 */ 403 if (!CPU_ISSUN4C) 404 return 0; 405 406 /* sun4c PROMs call the controller "fd" */ 407 if (strcmp("fd", ma->ma_name) != 0) 408 return 0; 409 410 return bus_space_probe(ma->ma_bustag, 411 ma->ma_paddr, 412 1, /* probe size */ 413 0, /* offset */ 414 0, /* flags */ 415 NULL, NULL); 416 } 417 418 int 419 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 420 { 421 union obio_attach_args *uoba = aux; 422 struct sbus_attach_args *sa; 423 424 /* 425 * Floppy controller is on obio on sun4m. 426 */ 427 if (uoba->uoba_isobio4 != 0) 428 return 0; 429 430 sa = &uoba->uoba_sbus; 431 432 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 433 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 434 return 0; 435 436 return bus_space_probe(sa->sa_bustag, 437 sbus_bus_addr(sa->sa_bustag, 438 sa->sa_slot, sa->sa_offset), 439 1, /* probe size */ 440 0, /* offset */ 441 0, /* flags */ 442 NULL, NULL); 443 } 444 445 #elif SUN4U 446 447 int 448 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux) 449 { 450 struct sbus_attach_args *sa = aux; 451 452 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 453 } 454 455 int 456 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux) 457 { 458 struct ebus_attach_args *ea = aux; 459 460 return strcmp("fdthree", ea->ea_name) == 0; 461 } 462 #endif 463 464 static void 465 establish_chip_type(struct fdc_softc *fdc, 466 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 467 bus_space_handle_t handle) 468 { 469 uint8_t v; 470 471 /* 472 * This hack from Chris Torek: apparently DOR really 473 * addresses MSR/DRS on a 82072. 474 * We used to rely on the VERSION command to tell the 475 * difference (which did not work). 476 */ 477 478 /* First, check the size of the register bank */ 479 if (size < 8) 480 /* It isn't a 82077 */ 481 return; 482 483 #ifdef SUN4 484 /* Then probe the DOR register offset */ 485 if (bus_space_probe(tag, addr, 486 1, /* probe size */ 487 FDREG77_DOR, /* offset */ 488 0, /* flags */ 489 NULL, NULL) == 0) { 490 491 /* It isn't a 82077 */ 492 return; 493 } 494 #endif 495 496 v = bus_space_read_1(tag, handle, FDREG77_DOR); 497 if (v == NE7_RQM) { 498 /* 499 * Value in DOR looks like it's really MSR 500 */ 501 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 502 v = bus_space_read_1(tag, handle, FDREG77_DOR); 503 if (v == NE7_RQM) { 504 /* 505 * The value in the DOR didn't stick; 506 * it isn't a 82077 507 */ 508 return; 509 } 510 } 511 512 fdc->sc_flags |= FDC_82077; 513 } 514 515 /* 516 * Arguments passed between fdcattach and fdprobe. 517 */ 518 struct fdc_attach_args { 519 int fa_drive; 520 struct fd_type *fa_deftype; 521 }; 522 523 /* 524 * Print the location of a disk drive (called just before attaching the 525 * the drive). If `fdc' is not NULL, the drive was found but was not 526 * in the system config file; print the drive name as well. 527 * Return QUIET (config_find ignores this if the device was configured) to 528 * avoid printing `fdN not configured' messages. 529 */ 530 int 531 fdprint(void *aux, const char *fdc) 532 { 533 register struct fdc_attach_args *fa = aux; 534 535 if (!fdc) 536 aprint_normal(" drive %d", fa->fa_drive); 537 return QUIET; 538 } 539 540 /* 541 * Configure several parameters and features on the FDC. 542 * Return 0 on success. 543 */ 544 static int 545 fdconf(struct fdc_softc *fdc) 546 { 547 int vroom; 548 549 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 550 return -1; 551 552 /* 553 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 554 * the PROM thinks is appropriate. 555 */ 556 if ((vroom = fdc->sc_status[7]) == 0) 557 vroom = 0x64; 558 559 /* Configure controller to use FIFO and Implied Seek */ 560 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 561 return -1; 562 if (fdc_wrfifo(fdc, vroom) != 0) 563 return -1; 564 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 565 return -1; 566 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 567 return -1; 568 /* No result phase for the NE7CMD_CFG command */ 569 570 if ((fdc->sc_flags & FDC_82077) != 0) { 571 /* Lock configuration across soft resets. */ 572 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 573 fdcresult(fdc) != 1) { 574 #ifdef DEBUG 575 printf("fdconf: CFGLOCK failed"); 576 #endif 577 return -1; 578 } 579 } 580 581 return 0; 582 #if 0 583 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 584 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 585 if (fdc_debug) 586 printf("[version cmd]"); 587 } 588 #endif 589 } 590 591 #ifdef SUN4 592 void 593 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 594 { 595 struct fdc_softc *fdc = (void *)self; 596 struct mainbus_attach_args *ma = aux; 597 598 fdc->sc_bustag = ma->ma_bustag; 599 600 if (bus_space_map( 601 ma->ma_bustag, 602 ma->ma_paddr, 603 ma->ma_size, 604 BUS_SPACE_MAP_LINEAR, 605 &fdc->sc_handle) != 0) { 606 aprint_error_dev(self, "cannot map registers\n"); 607 return; 608 } 609 610 establish_chip_type(fdc, 611 ma->ma_bustag, 612 ma->ma_paddr, 613 ma->ma_size, 614 fdc->sc_handle); 615 616 if (fdcattach(fdc, ma->ma_pri) != 0) 617 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 618 } 619 620 void 621 fdcattach_obio(struct device *parent, struct device *self, void *aux) 622 { 623 struct fdc_softc *fdc = (void *)self; 624 union obio_attach_args *uoba = aux; 625 struct sbus_attach_args *sa = &uoba->uoba_sbus; 626 627 if (sa->sa_nintr == 0) { 628 printf(": no interrupt line configured\n"); 629 return; 630 } 631 632 fdc->sc_bustag = sa->sa_bustag; 633 634 if (sbus_bus_map(sa->sa_bustag, 635 sa->sa_slot, sa->sa_offset, sa->sa_size, 636 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 637 aprint_error_dev(self, "cannot map control registers\n"); 638 return; 639 } 640 641 establish_chip_type(fdc, 642 sa->sa_bustag, 643 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 644 sa->sa_size, 645 fdc->sc_handle); 646 647 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 648 printf(": no drives attached\n"); 649 return; 650 } 651 652 if (fdcattach(fdc, sa->sa_pri) != 0) 653 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 654 } 655 656 #elif SUN4U 657 658 void 659 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 660 { 661 struct fdc_softc *fdc = (void *)self; 662 struct sbus_attach_args *sa = aux; 663 664 if (sa->sa_nintr == 0) { 665 printf(": no interrupt line configured\n"); 666 return; 667 } 668 669 if (auxio_fd_control(0) != 0) { 670 printf(": can't attach before auxio\n"); 671 return; 672 } 673 674 fdc->sc_bustag = sa->sa_bustag; 675 676 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 677 sa->sa_size, 0, &fdc->sc_handle) != 0) { 678 printf(": cannot map control registers\n"); 679 return; 680 } 681 682 establish_chip_type(fdc, 683 sa->sa_bustag, 684 BUS_ADDR(sa->sa_slot, sa->sa_offset), 685 sa->sa_size, 686 fdc->sc_handle); 687 688 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 689 printf(": no drives attached\n"); 690 return; 691 } 692 693 if (prom_getproplen(sa->sa_node, "manual") >= 0) 694 fdc->sc_flags |= FDC_NOEJECT; 695 696 697 if (fdcattach(fdc, sa->sa_pri) != 0) 698 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 699 } 700 701 void 702 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 703 { 704 struct fdc_softc *fdc = (void *)self; 705 struct ebus_attach_args *ea = aux; 706 int map_vaddr; 707 708 if (ea->ea_nintr == 0) { 709 printf(": no interrupt line configured\n"); 710 return; 711 } 712 713 if (ea->ea_nreg < 3) { 714 printf(": expected 3 registers, only got %d\n", 715 ea->ea_nreg); 716 return; 717 } 718 719 fdc->sc_bustag = ea->ea_bustag; 720 721 if (ea->ea_nvaddr > 0) { 722 sparc_promaddr_to_handle(ea->ea_bustag, 723 ea->ea_vaddr[0], &fdc->sc_handle); 724 map_vaddr = 1; 725 } else if (bus_space_map(fdc->sc_bustag, 726 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 727 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 728 map_vaddr = 0; 729 } else { 730 printf(": can't map control registers\n"); 731 return; 732 } 733 734 establish_chip_type(fdc, 735 fdc->sc_bustag, 736 map_vaddr ? ea->ea_vaddr[0] : 737 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 738 ea->ea_reg[0].size, 739 fdc->sc_handle); 740 741 fdc->sc_flags |= FDC_EBUS; 742 743 if (prom_getproplen(ea->ea_node, "manual") >= 0) 744 fdc->sc_flags |= FDC_NOEJECT; 745 746 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 747 if (map_vaddr == 0) 748 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 749 ea->ea_reg[0].size); 750 } 751 #endif 752 753 int 754 fdcattach(struct fdc_softc *fdc, int pri) 755 { 756 struct fdc_attach_args fa; 757 int drive_attached; 758 char code; 759 760 callout_init(&fdc->sc_timo_ch, 0); 761 callout_init(&fdc->sc_intr_ch, 0); 762 763 fdc->sc_state = DEVIDLE; 764 fdc->sc_itask = FDC_ITASK_NONE; 765 fdc->sc_istatus = FDC_ISTATUS_NONE; 766 fdc->sc_flags |= FDC_EIS; 767 TAILQ_INIT(&fdc->sc_drives); 768 769 if ((fdc->sc_flags & FDC_82077) != 0) { 770 fdc->sc_reg_msr = FDREG77_MSR; 771 fdc->sc_reg_fifo = FDREG77_FIFO; 772 fdc->sc_reg_dor = FDREG77_DOR; 773 fdc->sc_reg_dir = FDREG77_DIR; 774 code = '7'; 775 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 776 } else { 777 fdc->sc_reg_msr = FDREG72_MSR; 778 fdc->sc_reg_fifo = FDREG72_FIFO; 779 fdc->sc_reg_dor = 0; 780 code = '2'; 781 } 782 783 /* 784 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 785 * Note: CFG_EFIFO is active-low, initial threshold value: 8 786 */ 787 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 788 if (fdconf(fdc) != 0) { 789 printf(": no drives attached\n"); 790 return -1; 791 } 792 793 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 794 if (fdc->sc_sicookie == NULL) { 795 aprint_normal("\n"); 796 aprint_error_dev(&fdc->sc_dev, "cannot register soft interrupt handler\n"); 797 callout_stop(&fdc->sc_timo_ch); 798 callout_stop(&fdc->sc_intr_ch); 799 return -1; 800 } 801 #ifdef SUN4 802 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 803 #elif SUN4U 804 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 805 if (fdc->sc_flags & FDC_NOEJECT) 806 printf(": manual eject"); 807 printf("\n"); 808 #endif 809 810 #ifdef SUN4 811 fdciop = &fdc->sc_io; 812 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 813 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 814 #elif SUN4U 815 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 816 fdc_c_hwintr, fdc) == NULL) { 817 #endif 818 aprint_normal("\n"); 819 aprint_error_dev(&fdc->sc_dev, "cannot register interrupt handler\n"); 820 callout_stop(&fdc->sc_timo_ch); 821 callout_stop(&fdc->sc_intr_ch); 822 softint_disestablish(fdc->sc_sicookie); 823 return -1; 824 } 825 826 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 827 device_xname(&fdc->sc_dev), "intr"); 828 829 /* physical limit: four drives per controller. */ 830 drive_attached = 0; 831 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 832 fa.fa_deftype = NULL; /* unknown */ 833 fa.fa_deftype = &fd_types[0]; /* XXX */ 834 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 835 drive_attached = 1; 836 } 837 838 if (drive_attached == 0) { 839 /* XXX - dis-establish interrupts here */ 840 /* return -1; */ 841 } 842 843 return 0; 844 } 845 846 int 847 fdmatch(struct device *parent, struct cfdata *match, void *aux) 848 { 849 struct fdc_softc *fdc = (void *)parent; 850 bus_space_tag_t t = fdc->sc_bustag; 851 bus_space_handle_t h = fdc->sc_handle; 852 struct fdc_attach_args *fa = aux; 853 int drive = fa->fa_drive; 854 int n, ok; 855 856 if (drive > 0) 857 /* XXX - for now, punt on more than one drive */ 858 return 0; 859 860 if ((fdc->sc_flags & FDC_82077) != 0) { 861 /* select drive and turn on motor */ 862 bus_space_write_1(t, h, fdc->sc_reg_dor, 863 drive | FDO_FRST | FDO_MOEN(drive)); 864 /* wait for motor to spin up */ 865 delay(250000); 866 #ifdef SUN4 867 } else { 868 auxregbisc(AUXIO4C_FDS, 0); 869 #endif 870 } 871 fdc->sc_nstat = 0; 872 fdc_wrfifo(fdc, NE7CMD_RECAL); 873 fdc_wrfifo(fdc, drive); 874 875 /* Wait for recalibration to complete */ 876 for (n = 0; n < 10000; n++) { 877 uint8_t v; 878 879 delay(1000); 880 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 881 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 882 /* wait a bit longer till device *really* is ready */ 883 delay(100000); 884 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 885 break; 886 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 887 /* 888 * Got `invalid command'; we interpret it 889 * to mean that the re-calibrate hasn't in 890 * fact finished yet 891 */ 892 continue; 893 break; 894 } 895 } 896 n = fdc->sc_nstat; 897 #ifdef FD_DEBUG 898 if (fdc_debug) { 899 int i; 900 printf("fdprobe: %d stati:", n); 901 for (i = 0; i < n; i++) 902 printf(" 0x%x", fdc->sc_status[i]); 903 printf("\n"); 904 } 905 #endif 906 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 907 908 /* turn off motor */ 909 if ((fdc->sc_flags & FDC_82077) != 0) { 910 /* deselect drive and turn motor off */ 911 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 912 #ifdef SUN4 913 } else { 914 auxregbisc(0, AUXIO4C_FDS); 915 #endif 916 } 917 918 return ok; 919 } 920 921 /* 922 * Controller is working, and drive responded. Attach it. 923 */ 924 void 925 fdattach(struct device *parent, struct device *self, void *aux) 926 { 927 struct fdc_softc *fdc = (void *)parent; 928 struct fd_softc *fd = (void *)self; 929 struct fdc_attach_args *fa = aux; 930 struct fd_type *type = fa->fa_deftype; 931 int drive = fa->fa_drive; 932 933 callout_init(&fd->sc_motoron_ch, 0); 934 callout_init(&fd->sc_motoroff_ch, 0); 935 936 /* XXX Allow `flags' to override device type? */ 937 938 if (type) 939 printf(": %s %d cyl, %d head, %d sec\n", type->name, 940 type->cylinders, type->heads, type->sectrac); 941 else 942 printf(": density unknown\n"); 943 944 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 945 fd->sc_cylin = -1; 946 fd->sc_drive = drive; 947 fd->sc_deftype = type; 948 fdc->sc_fd[drive] = fd; 949 950 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 951 fdc_wrfifo(fdc, type->steprate); 952 /* XXX head load time == 6ms */ 953 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 954 955 /* 956 * Initialize and attach the disk structure. 957 */ 958 disk_init(&fd->sc_dk, device_xname(&fd->sc_dv), &fddkdriver); 959 disk_attach(&fd->sc_dk); 960 961 /* 962 * Establish a mountroot_hook anyway in case we booted 963 * with RB_ASKNAME and get selected as the boot device. 964 */ 965 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 966 967 fd_set_properties(fd); 968 969 /* Make sure the drive motor gets turned off at shutdown time. */ 970 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 971 } 972 973 inline struct fd_type * 974 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 975 { 976 int type = FDTYPE(dev); 977 978 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 979 return NULL; 980 return type ? &fd_types[type - 1] : fd->sc_deftype; 981 } 982 983 void 984 fdstrategy(struct buf *bp) 985 { 986 struct fd_softc *fd; 987 int sz; 988 int s; 989 990 /* Valid unit, controller, and request? */ 991 fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 992 if (fd == NULL) { 993 bp->b_error = EINVAL; 994 goto done; 995 } 996 997 if (bp->b_blkno < 0 || 998 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 999 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1000 (bp->b_flags & B_FORMAT) == 0)) { 1001 bp->b_error = EINVAL; 1002 goto done; 1003 } 1004 1005 /* If it's a null transfer, return immediately. */ 1006 if (bp->b_bcount == 0) 1007 goto done; 1008 1009 sz = howmany(bp->b_bcount, DEV_BSIZE); 1010 1011 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1012 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1013 - bp->b_blkno; 1014 if (sz == 0) { 1015 /* If exactly at end of disk, return EOF. */ 1016 bp->b_resid = bp->b_bcount; 1017 goto done; 1018 } 1019 if (sz < 0) { 1020 /* If past end of disk, return EINVAL. */ 1021 bp->b_error = EINVAL; 1022 goto done; 1023 } 1024 /* Otherwise, truncate request. */ 1025 bp->b_bcount = sz << DEV_BSHIFT; 1026 } 1027 1028 bp->b_rawblkno = bp->b_blkno; 1029 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1030 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1031 1032 #ifdef FD_DEBUG 1033 if (fdc_debug > 1) 1034 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1035 (long long)bp->b_blkno, bp->b_bcount, 1036 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1037 #endif 1038 1039 /* Queue transfer on drive, activate drive and controller if idle. */ 1040 s = splbio(); 1041 BUFQ_PUT(fd->sc_q, bp); 1042 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1043 if (fd->sc_active == 0) 1044 fdstart(fd); 1045 #ifdef DIAGNOSTIC 1046 else { 1047 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1048 if (fdc->sc_state == DEVIDLE) { 1049 printf("fdstrategy: controller inactive\n"); 1050 fdcstart(fdc); 1051 } 1052 } 1053 #endif 1054 splx(s); 1055 return; 1056 1057 done: 1058 /* Toss transfer; we're done early. */ 1059 biodone(bp); 1060 } 1061 1062 void 1063 fdstart(struct fd_softc *fd) 1064 { 1065 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1066 int active = fdc->sc_drives.tqh_first != 0; 1067 1068 /* Link into controller queue. */ 1069 fd->sc_active = 1; 1070 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1071 1072 /* If controller not already active, start it. */ 1073 if (!active) 1074 fdcstart(fdc); 1075 } 1076 1077 void 1078 fdfinish(struct fd_softc *fd, struct buf *bp) 1079 { 1080 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1081 1082 /* 1083 * Move this drive to the end of the queue to give others a `fair' 1084 * chance. We only force a switch if N operations are completed while 1085 * another drive is waiting to be serviced, since there is a long motor 1086 * startup delay whenever we switch. 1087 */ 1088 (void)BUFQ_GET(fd->sc_q); 1089 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1090 fd->sc_ops = 0; 1091 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1092 if (BUFQ_PEEK(fd->sc_q) != NULL) { 1093 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1094 } else 1095 fd->sc_active = 0; 1096 } 1097 bp->b_resid = fd->sc_bcount; 1098 fd->sc_skip = 0; 1099 1100 biodone(bp); 1101 /* turn off motor 5s from now */ 1102 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1103 fdc->sc_state = DEVIDLE; 1104 } 1105 1106 void 1107 fdc_reset(struct fdc_softc *fdc) 1108 { 1109 bus_space_tag_t t = fdc->sc_bustag; 1110 bus_space_handle_t h = fdc->sc_handle; 1111 1112 if ((fdc->sc_flags & FDC_82077) != 0) { 1113 bus_space_write_1(t, h, fdc->sc_reg_dor, 1114 FDO_FDMAEN | FDO_MOEN(0)); 1115 } 1116 1117 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1118 delay(10); 1119 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1120 1121 if ((fdc->sc_flags & FDC_82077) != 0) { 1122 bus_space_write_1(t, h, fdc->sc_reg_dor, 1123 FDO_FRST | FDO_FDMAEN | FDO_DS); 1124 } 1125 #ifdef FD_DEBUG 1126 if (fdc_debug) 1127 printf("fdc reset\n"); 1128 #endif 1129 } 1130 1131 void 1132 fd_set_motor(struct fdc_softc *fdc) 1133 { 1134 struct fd_softc *fd; 1135 u_char status; 1136 int n; 1137 1138 if ((fdc->sc_flags & FDC_82077) != 0) { 1139 status = FDO_FRST | FDO_FDMAEN; 1140 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1141 status |= fd->sc_drive; 1142 1143 for (n = 0; n < 4; n++) 1144 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1145 status |= FDO_MOEN(n); 1146 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1147 fdc->sc_reg_dor, status); 1148 #ifdef SUN4 1149 } else { 1150 1151 for (n = 0; n < 4; n++) { 1152 if ((fd = fdc->sc_fd[n]) != NULL && 1153 (fd->sc_flags & FD_MOTOR) != 0) { 1154 auxregbisc(AUXIO4C_FDS, 0); 1155 return; 1156 } 1157 } 1158 auxregbisc(0, AUXIO4C_FDS); 1159 #endif 1160 } 1161 } 1162 1163 void 1164 fd_motor_off(void *arg) 1165 { 1166 struct fd_softc *fd = arg; 1167 int s; 1168 1169 s = splbio(); 1170 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1171 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1172 splx(s); 1173 } 1174 1175 void 1176 fd_motor_on(void *arg) 1177 { 1178 struct fd_softc *fd = arg; 1179 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1180 int s; 1181 1182 s = splbio(); 1183 fd->sc_flags &= ~FD_MOTOR_WAIT; 1184 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1185 (void)fdcstate(fdc); 1186 splx(s); 1187 } 1188 1189 /* 1190 * Get status bytes off the FDC after a command has finished 1191 * Returns the number of status bytes read; -1 on error. 1192 * The return value is also stored in `sc_nstat'. 1193 */ 1194 int 1195 fdcresult(struct fdc_softc *fdc) 1196 { 1197 bus_space_tag_t t = fdc->sc_bustag; 1198 bus_space_handle_t h = fdc->sc_handle; 1199 int j, n = 0; 1200 1201 for (j = 10000; j; j--) { 1202 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1203 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1204 if (v == NE7_RQM) 1205 return fdc->sc_nstat = n; 1206 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1207 if (n >= sizeof(fdc->sc_status)) { 1208 log(LOG_ERR, "fdcresult: overrun\n"); 1209 return -1; 1210 } 1211 fdc->sc_status[n++] = 1212 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1213 } else 1214 delay(1); 1215 } 1216 1217 log(LOG_ERR, "fdcresult: timeout\n"); 1218 return fdc->sc_nstat = -1; 1219 } 1220 1221 /* 1222 * Write a command byte to the FDC. 1223 * Returns 0 on success; -1 on failure (i.e. timeout) 1224 */ 1225 int 1226 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1227 { 1228 bus_space_tag_t t = fdc->sc_bustag; 1229 bus_space_handle_t h = fdc->sc_handle; 1230 int i; 1231 1232 for (i = 100000; i-- > 0;) { 1233 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1234 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1235 /* The chip is ready */ 1236 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1237 return 0; 1238 } 1239 delay(1); 1240 } 1241 return -1; 1242 } 1243 1244 int 1245 fdc_diskchange(struct fdc_softc *fdc) 1246 { 1247 1248 #ifdef SUN4 1249 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1250 #endif 1251 bus_space_tag_t t = fdc->sc_bustag; 1252 bus_space_handle_t h = fdc->sc_handle; 1253 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1254 return (v & FDI_DCHG) != 0; 1255 #ifdef SUN4 1256 } else if (CPU_ISSUN4C) { 1257 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1258 } 1259 return 0; 1260 #endif 1261 } 1262 1263 int 1264 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1265 { 1266 int pmask; 1267 struct fd_softc *fd; 1268 struct fd_type *type; 1269 1270 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1271 if (fd == NULL) 1272 return ENXIO; 1273 type = fd_dev_to_type(fd, dev); 1274 if (type == NULL) 1275 return ENXIO; 1276 1277 if ((fd->sc_flags & FD_OPEN) != 0 && 1278 fd->sc_type != type) 1279 return EBUSY; 1280 1281 fd->sc_type = type; 1282 fd->sc_cylin = -1; 1283 fd->sc_flags |= FD_OPEN; 1284 1285 /* 1286 * Only update the disklabel if we're not open anywhere else. 1287 */ 1288 if (fd->sc_dk.dk_openmask == 0) 1289 fdgetdisklabel(dev); 1290 1291 pmask = (1 << DISKPART(dev)); 1292 1293 switch (fmt) { 1294 case S_IFCHR: 1295 fd->sc_dk.dk_copenmask |= pmask; 1296 break; 1297 1298 case S_IFBLK: 1299 fd->sc_dk.dk_bopenmask |= pmask; 1300 break; 1301 } 1302 fd->sc_dk.dk_openmask = 1303 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1304 1305 return 0; 1306 } 1307 1308 int 1309 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1310 { 1311 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1312 int pmask = (1 << DISKPART(dev)); 1313 1314 fd->sc_flags &= ~FD_OPEN; 1315 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1316 1317 switch (fmt) { 1318 case S_IFCHR: 1319 fd->sc_dk.dk_copenmask &= ~pmask; 1320 break; 1321 1322 case S_IFBLK: 1323 fd->sc_dk.dk_bopenmask &= ~pmask; 1324 break; 1325 } 1326 fd->sc_dk.dk_openmask = 1327 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1328 1329 return 0; 1330 } 1331 1332 int 1333 fdread(dev_t dev, struct uio *uio, int flag) 1334 { 1335 1336 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1337 } 1338 1339 int 1340 fdwrite(dev_t dev, struct uio *uio, int flag) 1341 { 1342 1343 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1344 } 1345 1346 void 1347 fdcstart(struct fdc_softc *fdc) 1348 { 1349 1350 #ifdef DIAGNOSTIC 1351 /* only got here if controller's drive queue was inactive; should 1352 be in idle state */ 1353 if (fdc->sc_state != DEVIDLE) { 1354 printf("fdcstart: not idle\n"); 1355 return; 1356 } 1357 #endif 1358 (void)fdcstate(fdc); 1359 } 1360 1361 static void 1362 fdcpstatus(struct fdc_softc *fdc) 1363 { 1364 char bits[64]; 1365 1366 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1367 printf(" (st0 %s", bits); 1368 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1369 printf(" st1 %s", bits); 1370 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1371 printf(" st2 %s", bits); 1372 printf(" cyl %d head %d sec %d)\n", 1373 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1374 } 1375 1376 void 1377 fdcstatus(struct fdc_softc *fdc, const char *s) 1378 { 1379 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1380 int n; 1381 char bits[64]; 1382 1383 /* Just print last status */ 1384 n = fdc->sc_nstat; 1385 1386 #if 0 1387 /* 1388 * A 82072 seems to return <invalid command> on 1389 * gratuitous Sense Interrupt commands. 1390 */ 1391 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1392 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1393 (void)fdcresult(fdc); 1394 n = 2; 1395 } 1396 #endif 1397 1398 printf("%s: %s: state %d", 1399 fd ? device_xname(&fd->sc_dv) : "fdc", s, fdc->sc_state); 1400 1401 switch (n) { 1402 case 0: 1403 printf("\n"); 1404 break; 1405 case 2: 1406 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1407 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1408 break; 1409 case 7: 1410 fdcpstatus(fdc); 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 = device_lookup_private(&fd_cd, FDUNIT(dev)); 2104 fdc = device_private(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 = device_lookup_private(&fd_cd, 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 i; 2386 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 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 addr = malloc(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(device_lookup_private(&fd_cd, 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 Mon Sep 29 21:09:56 GMT 2025