fdc.c revision 1.37
1 /* $NetBSD: fdc.c,v 1.37 2013/05/29 00:47:48 christos 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 1.37 2013/05/29 00:47:48 christos Exp $"); 105 106 #include "opt_ddb.h" 107 #include "opt_md.h" 108 109 #include <sys/param.h> 110 #include <sys/types.h> 111 #include <sys/systm.h> 112 #include <sys/callout.h> 113 #include <sys/kernel.h> 114 #include <sys/file.h> 115 #include <sys/ioctl.h> 116 #include <sys/device.h> 117 #include <sys/disklabel.h> 118 #include <sys/disk.h> 119 #include <sys/fdio.h> 120 #include <sys/buf.h> 121 #include <sys/bufq.h> 122 #include <sys/malloc.h> 123 #include <sys/proc.h> 124 #include <sys/uio.h> 125 #include <sys/stat.h> 126 #include <sys/syslog.h> 127 #include <sys/queue.h> 128 #include <sys/conf.h> 129 #include <sys/intr.h> 130 131 #include <dev/cons.h> 132 133 #include <uvm/uvm_extern.h> 134 135 #include <machine/autoconf.h> 136 137 #ifdef SUN4 138 #include <sparc/sparc/auxreg.h> 139 #include <sparc/dev/fdreg.h> 140 #include <sparc/dev/fdvar.h> 141 #elif SUN4U 142 #include <dev/ebus/ebusreg.h> 143 #include <dev/ebus/ebusvar.h> 144 #include <dev/sbus/sbusvar.h> 145 #include <sparc64/dev/auxioreg.h> 146 #include <sparc64/dev/auxiovar.h> 147 #include <sparc64/dev/fdcreg.h> 148 #include <sparc64/dev/fdcvar.h> 149 #endif 150 151 #include <prop/proplib.h> 152 153 #define FDUNIT(dev) (minor(dev) / 8) 154 #define FDTYPE(dev) (minor(dev) % 8) 155 156 /* (mis)use device use flag to identify format operation */ 157 #define B_FORMAT B_DEVPRIVATE 158 159 #define FD_DEBUG 160 #ifdef FD_DEBUG 161 int fdc_debug = 0; 162 #endif 163 164 enum fdc_state { 165 DEVIDLE = 0, 166 MOTORWAIT, /* 1 */ 167 DOSEEK, /* 2 */ 168 SEEKWAIT, /* 3 */ 169 SEEKTIMEDOUT, /* 4 */ 170 SEEKCOMPLETE, /* 5 */ 171 DOIO, /* 6 */ 172 IOCOMPLETE, /* 7 */ 173 IOTIMEDOUT, /* 8 */ 174 IOCLEANUPWAIT, /* 9 */ 175 IOCLEANUPTIMEDOUT,/*10 */ 176 DORESET, /* 11 */ 177 RESETCOMPLETE, /* 12 */ 178 RESETTIMEDOUT, /* 13 */ 179 DORECAL, /* 14 */ 180 RECALWAIT, /* 15 */ 181 RECALTIMEDOUT, /* 16 */ 182 RECALCOMPLETE, /* 17 */ 183 DODSKCHG, /* 18 */ 184 DSKCHGWAIT, /* 19 */ 185 DSKCHGTIMEDOUT, /* 20 */ 186 }; 187 188 /* software state, per controller */ 189 struct fdc_softc { 190 device_t sc_dev; /* boilerplate */ 191 bus_space_tag_t sc_bustag; 192 193 struct callout sc_timo_ch; /* timeout callout */ 194 struct callout sc_intr_ch; /* pseudo-intr callout */ 195 196 struct fd_softc *sc_fd[4]; /* pointers to children */ 197 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 198 enum fdc_state sc_state; 199 int sc_flags; 200 #define FDC_82077 0x01 201 #define FDC_NEEDHEADSETTLE 0x02 202 #define FDC_EIS 0x04 203 #define FDC_NEEDMOTORWAIT 0x08 204 #define FDC_NOEJECT 0x10 205 #define FDC_EBUS 0x20 206 int sc_errors; /* number of retries so far */ 207 int sc_overruns; /* number of DMA overruns */ 208 int sc_cfg; /* current configuration */ 209 struct fdcio sc_io; 210 #define sc_handle sc_io.fdcio_handle 211 #define sc_reg_msr sc_io.fdcio_reg_msr 212 #define sc_reg_fifo sc_io.fdcio_reg_fifo 213 #define sc_reg_dor sc_io.fdcio_reg_dor 214 #define sc_reg_dir sc_io.fdcio_reg_dir 215 #define sc_reg_drs sc_io.fdcio_reg_msr 216 #define sc_itask sc_io.fdcio_itask 217 #define sc_istatus sc_io.fdcio_istatus 218 #define sc_data sc_io.fdcio_data 219 #define sc_tc sc_io.fdcio_tc 220 #define sc_nstat sc_io.fdcio_nstat 221 #define sc_status sc_io.fdcio_status 222 #define sc_intrcnt sc_io.fdcio_intrcnt 223 224 void *sc_sicookie; /* softint(9) cookie */ 225 }; 226 227 #ifdef SUN4 228 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 229 #endif 230 231 /* controller driver configuration */ 232 #ifdef SUN4 233 int fdcmatch_mainbus(device_t, cfdata_t, void*); 234 int fdcmatch_obio(device_t, cfdata_t, void *); 235 void fdcattach_mainbus(device_t, device_t, void *); 236 void fdcattach_obio(device_t, device_t, void *); 237 #elif SUN4U 238 int fdcmatch_sbus(device_t, cfdata_t, void *); 239 int fdcmatch_ebus(device_t, cfdata_t, void *); 240 void fdcattach_sbus(device_t, device_t, void *); 241 void fdcattach_ebus(device_t, device_t, void *); 242 #endif 243 244 int fdcattach(struct fdc_softc *, int); 245 246 #ifdef SUN4 247 CFATTACH_DECL_NEW(fdc_mainbus, sizeof(struct fdc_softc), 248 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 249 250 CFATTACH_DECL_NEW(fdc_obio, sizeof(struct fdc_softc), 251 fdcmatch_obio, fdcattach_obio, NULL, NULL); 252 #elif SUN4U 253 CFATTACH_DECL_NEW(fdc_sbus, sizeof(struct fdc_softc), 254 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 255 256 CFATTACH_DECL_NEW(fdc_ebus, sizeof(struct fdc_softc), 257 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 258 #endif 259 260 static inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 261 262 /* 263 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 264 * we tell them apart. 265 */ 266 struct fd_type { 267 int sectrac; /* sectors per track */ 268 int heads; /* number of heads */ 269 int seccyl; /* sectors per cylinder */ 270 int secsize; /* size code for sectors */ 271 int datalen; /* data len when secsize = 0 */ 272 int steprate; /* step rate and head unload time */ 273 int gap1; /* gap len between sectors */ 274 int gap2; /* formatting gap */ 275 int cylinders; /* total num of cylinders */ 276 int size; /* size of disk in sectors */ 277 int step; /* steps per cylinder */ 278 int rate; /* transfer speed code */ 279 int fillbyte; /* format fill byte */ 280 int interleave; /* interleave factor (formatting) */ 281 const char *name; 282 }; 283 284 /* The order of entries in the following table is important -- BEWARE! */ 285 struct fd_type fd_types[] = { 286 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 287 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 288 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 289 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 290 }; 291 292 /* software state, per disk (with up to 4 disks per ctlr) */ 293 struct fd_softc { 294 device_t sc_dev; /* generic device info */ 295 struct disk sc_dk; /* generic disk info */ 296 297 struct fd_type *sc_deftype; /* default type descriptor */ 298 struct fd_type *sc_type; /* current type descriptor */ 299 300 struct callout sc_motoron_ch; 301 struct callout sc_motoroff_ch; 302 303 daddr_t sc_blkno; /* starting block number */ 304 int sc_bcount; /* byte count left */ 305 int sc_skip; /* bytes already transferred */ 306 int sc_nblks; /* number of blocks currently transferring */ 307 int sc_nbytes; /* number of bytes currently transferring */ 308 309 int sc_drive; /* physical unit number */ 310 int sc_flags; 311 #define FD_OPEN 0x01 /* it's open */ 312 #define FD_MOTOR 0x02 /* motor should be on */ 313 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 314 int sc_cylin; /* where we think the head is */ 315 int sc_opts; /* user-set options */ 316 317 TAILQ_ENTRY(fd_softc) sc_drivechain; 318 int sc_ops; /* I/O ops since last switch */ 319 struct bufq_state *sc_q;/* pending I/O requests */ 320 int sc_active; /* number of active I/O requests */ 321 }; 322 323 /* floppy driver configuration */ 324 int fdmatch(device_t, cfdata_t, void *); 325 void fdattach(device_t, device_t, void *); 326 bool fdshutdown(device_t, int); 327 bool fdsuspend(device_t, const pmf_qual_t *); 328 329 CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), 330 fdmatch, fdattach, NULL, NULL); 331 332 extern struct cfdriver fd_cd; 333 334 dev_type_open(fdopen); 335 dev_type_close(fdclose); 336 dev_type_read(fdread); 337 dev_type_write(fdwrite); 338 dev_type_ioctl(fdioctl); 339 dev_type_strategy(fdstrategy); 340 341 const struct bdevsw fd_bdevsw = { 342 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(device_t ); 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_geometry(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(device_t parent, cfdata_t 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(device_t parent, cfdata_t 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(device_t parent, cfdata_t 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(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux) 594 { 595 struct fdc_softc *fdc = device_private(self); 596 struct mainbus_attach_args *ma = aux; 597 598 fdc->sc_dev = self; 599 fdc->sc_bustag = ma->ma_bustag; 600 601 if (bus_space_map( 602 ma->ma_bustag, 603 ma->ma_paddr, 604 ma->ma_size, 605 BUS_SPACE_MAP_LINEAR, 606 &fdc->sc_handle) != 0) { 607 aprint_error_dev(self, "cannot map registers\n"); 608 return; 609 } 610 611 establish_chip_type(fdc, 612 ma->ma_bustag, 613 ma->ma_paddr, 614 ma->ma_size, 615 fdc->sc_handle); 616 617 if (fdcattach(fdc, ma->ma_pri) != 0) 618 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 619 } 620 621 void 622 fdcattach_obio(device_t parent, device_t self, void *aux) 623 { 624 struct fdc_softc *fdc = device_private(self); 625 union obio_attach_args *uoba = aux; 626 struct sbus_attach_args *sa = &uoba->uoba_sbus; 627 628 if (sa->sa_nintr == 0) { 629 printf(": no interrupt line configured\n"); 630 return; 631 } 632 633 fdc->sc_dev = self; 634 fdc->sc_bustag = sa->sa_bustag; 635 636 if (sbus_bus_map(sa->sa_bustag, 637 sa->sa_slot, sa->sa_offset, sa->sa_size, 638 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 639 aprint_error_dev(self, "cannot map control registers\n"); 640 return; 641 } 642 643 establish_chip_type(fdc, 644 sa->sa_bustag, 645 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 646 sa->sa_size, 647 fdc->sc_handle); 648 649 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 650 printf(": no drives attached\n"); 651 return; 652 } 653 654 if (fdcattach(fdc, sa->sa_pri) != 0) 655 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 656 } 657 658 #elif SUN4U 659 660 void 661 fdcattach_sbus(device_t parent, device_t self, void *aux) 662 { 663 struct fdc_softc *fdc = device_private(self); 664 struct sbus_attach_args *sa = aux; 665 666 if (sa->sa_nintr == 0) { 667 printf(": no interrupt line configured\n"); 668 return; 669 } 670 671 if (auxio_fd_control(0) != 0) { 672 printf(": can't attach before auxio\n"); 673 return; 674 } 675 676 fdc->sc_dev = self; 677 fdc->sc_bustag = sa->sa_bustag; 678 679 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 680 sa->sa_size, 0, &fdc->sc_handle) != 0) { 681 printf(": cannot map control registers\n"); 682 return; 683 } 684 685 establish_chip_type(fdc, 686 sa->sa_bustag, 687 BUS_ADDR(sa->sa_slot, sa->sa_offset), 688 sa->sa_size, 689 fdc->sc_handle); 690 691 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 692 printf(": no drives attached\n"); 693 return; 694 } 695 696 if (prom_getproplen(sa->sa_node, "manual") >= 0) 697 fdc->sc_flags |= FDC_NOEJECT; 698 699 700 if (fdcattach(fdc, sa->sa_pri) != 0) 701 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 702 } 703 704 void 705 fdcattach_ebus(device_t parent, device_t self, void *aux) 706 { 707 struct fdc_softc *fdc = device_private(self); 708 struct ebus_attach_args *ea = aux; 709 int map_vaddr; 710 711 if (ea->ea_nintr == 0) { 712 printf(": no interrupt line configured\n"); 713 return; 714 } 715 716 if (ea->ea_nreg < 3) { 717 printf(": expected 3 registers, only got %d\n", 718 ea->ea_nreg); 719 return; 720 } 721 722 fdc->sc_dev = self; 723 fdc->sc_bustag = ea->ea_bustag; 724 725 if (ea->ea_nvaddr > 0) { 726 sparc_promaddr_to_handle(ea->ea_bustag, 727 ea->ea_vaddr[0], &fdc->sc_handle); 728 map_vaddr = 1; 729 } else if (bus_space_map(fdc->sc_bustag, 730 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 731 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 732 map_vaddr = 0; 733 } else { 734 printf(": can't map control registers\n"); 735 return; 736 } 737 738 establish_chip_type(fdc, 739 fdc->sc_bustag, 740 map_vaddr ? ea->ea_vaddr[0] : 741 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 742 ea->ea_reg[0].size, 743 fdc->sc_handle); 744 745 fdc->sc_flags |= FDC_EBUS; 746 747 if (prom_getproplen(ea->ea_node, "manual") >= 0) 748 fdc->sc_flags |= FDC_NOEJECT; 749 750 if (fdcattach(fdc, ea->ea_intr[0]) != 0) 751 if (map_vaddr == 0) 752 bus_space_unmap(ea->ea_bustag, fdc->sc_handle, 753 ea->ea_reg[0].size); 754 } 755 #endif 756 757 int 758 fdcattach(struct fdc_softc *fdc, int pri) 759 { 760 struct fdc_attach_args fa; 761 int drive_attached; 762 char code; 763 764 callout_init(&fdc->sc_timo_ch, 0); 765 callout_init(&fdc->sc_intr_ch, 0); 766 767 fdc->sc_state = DEVIDLE; 768 fdc->sc_itask = FDC_ITASK_NONE; 769 fdc->sc_istatus = FDC_ISTATUS_NONE; 770 fdc->sc_flags |= FDC_EIS; 771 TAILQ_INIT(&fdc->sc_drives); 772 773 if ((fdc->sc_flags & FDC_82077) != 0) { 774 fdc->sc_reg_msr = FDREG77_MSR; 775 fdc->sc_reg_fifo = FDREG77_FIFO; 776 fdc->sc_reg_dor = FDREG77_DOR; 777 fdc->sc_reg_dir = FDREG77_DIR; 778 code = '7'; 779 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 780 } else { 781 fdc->sc_reg_msr = FDREG72_MSR; 782 fdc->sc_reg_fifo = FDREG72_FIFO; 783 fdc->sc_reg_dor = 0; 784 code = '2'; 785 } 786 787 /* 788 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 789 * Note: CFG_EFIFO is active-low, initial threshold value: 8 790 */ 791 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 792 if (fdconf(fdc) != 0) { 793 printf(": no drives attached\n"); 794 return -1; 795 } 796 797 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 798 if (fdc->sc_sicookie == NULL) { 799 aprint_normal("\n"); 800 aprint_error_dev(fdc->sc_dev, 801 "cannot register soft interrupt handler\n"); 802 callout_stop(&fdc->sc_timo_ch); 803 callout_stop(&fdc->sc_intr_ch); 804 return -1; 805 } 806 #ifdef SUN4 807 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 808 #elif SUN4U 809 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 810 if (fdc->sc_flags & FDC_NOEJECT) 811 printf(": manual eject"); 812 printf("\n"); 813 #endif 814 815 #ifdef SUN4 816 fdciop = &fdc->sc_io; 817 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 818 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 819 #elif SUN4U 820 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 821 fdc_c_hwintr, fdc) == NULL) { 822 #endif 823 aprint_normal("\n"); 824 aprint_error_dev(fdc->sc_dev, 825 "cannot register interrupt handler\n"); 826 callout_stop(&fdc->sc_timo_ch); 827 callout_stop(&fdc->sc_intr_ch); 828 softint_disestablish(fdc->sc_sicookie); 829 return -1; 830 } 831 832 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 833 device_xname(fdc->sc_dev), "intr"); 834 835 /* physical limit: four drives per controller. */ 836 drive_attached = 0; 837 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 838 fa.fa_deftype = NULL; /* unknown */ 839 fa.fa_deftype = &fd_types[0]; /* XXX */ 840 if (config_found(fdc->sc_dev, (void *)&fa, fdprint) != NULL) 841 drive_attached = 1; 842 } 843 844 if (drive_attached == 0) { 845 /* XXX - dis-establish interrupts here */ 846 /* return -1; */ 847 } 848 849 return 0; 850 } 851 852 int 853 fdmatch(device_t parent, cfdata_t match, void *aux) 854 { 855 struct fdc_softc *fdc = device_private(parent); 856 bus_space_tag_t t = fdc->sc_bustag; 857 bus_space_handle_t h = fdc->sc_handle; 858 struct fdc_attach_args *fa = aux; 859 int drive = fa->fa_drive; 860 int n, ok; 861 862 if (drive > 0) 863 /* XXX - for now, punt on more than one drive */ 864 return 0; 865 866 if ((fdc->sc_flags & FDC_82077) != 0) { 867 /* select drive and turn on motor */ 868 bus_space_write_1(t, h, fdc->sc_reg_dor, 869 drive | FDO_FRST | FDO_MOEN(drive)); 870 /* wait for motor to spin up */ 871 delay(250000); 872 #ifdef SUN4 873 } else { 874 auxregbisc(AUXIO4C_FDS, 0); 875 #endif 876 } 877 fdc->sc_nstat = 0; 878 fdc_wrfifo(fdc, NE7CMD_RECAL); 879 fdc_wrfifo(fdc, drive); 880 881 /* Wait for recalibration to complete */ 882 for (n = 0; n < 10000; n++) { 883 uint8_t v; 884 885 delay(1000); 886 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 887 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 888 /* wait a bit longer till device *really* is ready */ 889 delay(100000); 890 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 891 break; 892 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 893 /* 894 * Got `invalid command'; we interpret it 895 * to mean that the re-calibrate hasn't in 896 * fact finished yet 897 */ 898 continue; 899 break; 900 } 901 } 902 n = fdc->sc_nstat; 903 #ifdef FD_DEBUG 904 if (fdc_debug) { 905 int i; 906 printf("fdprobe: %d stati:", n); 907 for (i = 0; i < n; i++) 908 printf(" 0x%x", fdc->sc_status[i]); 909 printf("\n"); 910 } 911 #endif 912 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 913 914 /* turn off motor */ 915 if ((fdc->sc_flags & FDC_82077) != 0) { 916 /* deselect drive and turn motor off */ 917 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 918 #ifdef SUN4 919 } else { 920 auxregbisc(0, AUXIO4C_FDS); 921 #endif 922 } 923 924 return ok; 925 } 926 927 /* 928 * Controller is working, and drive responded. Attach it. 929 */ 930 void 931 fdattach(device_t parent, device_t self, void *aux) 932 { 933 struct fdc_softc *fdc = device_private(parent); 934 struct fd_softc *fd = device_private(self); 935 struct fdc_attach_args *fa = aux; 936 struct fd_type *type = fa->fa_deftype; 937 int drive = fa->fa_drive; 938 939 fd->sc_dev = self; 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_dev), &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_dev); 973 974 fd_set_geometry(fd); 975 976 /* Make sure the drive motor gets turned off at shutdown time. */ 977 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 978 aprint_error_dev(self, "couldn't establish power handler\n"); 979 } 980 981 bool fdshutdown(device_t self, int how) 982 { 983 struct fd_softc *fd = device_private(self); 984 985 fd_motor_off(fd); 986 return true; 987 } 988 989 bool fdsuspend(device_t self, const pmf_qual_t *qual) 990 { 991 992 return fdshutdown(self, boothowto); 993 } 994 995 996 static inline struct fd_type * 997 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 998 { 999 int type = FDTYPE(dev); 1000 1001 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 1002 return NULL; 1003 return type ? &fd_types[type - 1] : fd->sc_deftype; 1004 } 1005 1006 void 1007 fdstrategy(struct buf *bp) 1008 { 1009 struct fd_softc *fd; 1010 int sz; 1011 int s; 1012 1013 /* Valid unit, controller, and request? */ 1014 fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); 1015 if (fd == NULL) { 1016 bp->b_error = EINVAL; 1017 goto done; 1018 } 1019 1020 if (bp->b_blkno < 0 || 1021 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 1022 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 1023 (bp->b_flags & B_FORMAT) == 0)) { 1024 bp->b_error = EINVAL; 1025 goto done; 1026 } 1027 1028 /* If it's a null transfer, return immediately. */ 1029 if (bp->b_bcount == 0) 1030 goto done; 1031 1032 sz = howmany(bp->b_bcount, DEV_BSIZE); 1033 1034 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 1035 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 1036 - bp->b_blkno; 1037 if (sz == 0) { 1038 /* If exactly at end of disk, return EOF. */ 1039 bp->b_resid = bp->b_bcount; 1040 goto done; 1041 } 1042 if (sz < 0) { 1043 /* If past end of disk, return EINVAL. */ 1044 bp->b_error = EINVAL; 1045 goto done; 1046 } 1047 /* Otherwise, truncate request. */ 1048 bp->b_bcount = sz << DEV_BSHIFT; 1049 } 1050 1051 bp->b_rawblkno = bp->b_blkno; 1052 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 1053 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1054 1055 #ifdef FD_DEBUG 1056 if (fdc_debug > 1) 1057 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n", 1058 (long long)bp->b_blkno, bp->b_bcount, 1059 (long long)fd->sc_blkno, bp->b_cylinder, sz); 1060 #endif 1061 1062 /* Queue transfer on drive, activate drive and controller if idle. */ 1063 s = splbio(); 1064 bufq_put(fd->sc_q, bp); 1065 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 1066 if (fd->sc_active == 0) 1067 fdstart(fd); 1068 #ifdef DIAGNOSTIC 1069 else { 1070 struct fdc_softc *fdc = device_private( 1071 device_parent(fd->sc_dev)); 1072 if (fdc->sc_state == DEVIDLE) { 1073 printf("fdstrategy: controller inactive\n"); 1074 fdcstart(fdc); 1075 } 1076 } 1077 #endif 1078 splx(s); 1079 return; 1080 1081 done: 1082 /* Toss transfer; we're done early. */ 1083 biodone(bp); 1084 } 1085 1086 void 1087 fdstart(struct fd_softc *fd) 1088 { 1089 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1090 int active = fdc->sc_drives.tqh_first != 0; 1091 1092 /* Link into controller queue. */ 1093 fd->sc_active = 1; 1094 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1095 1096 /* If controller not already active, start it. */ 1097 if (!active) 1098 fdcstart(fdc); 1099 } 1100 1101 void 1102 fdfinish(struct fd_softc *fd, struct buf *bp) 1103 { 1104 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1105 1106 /* 1107 * Move this drive to the end of the queue to give others a `fair' 1108 * chance. We only force a switch if N operations are completed while 1109 * another drive is waiting to be serviced, since there is a long motor 1110 * startup delay whenever we switch. 1111 */ 1112 (void)bufq_get(fd->sc_q); 1113 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 1114 fd->sc_ops = 0; 1115 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1116 if (bufq_peek(fd->sc_q) != NULL) { 1117 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 1118 } else 1119 fd->sc_active = 0; 1120 } 1121 bp->b_resid = fd->sc_bcount; 1122 fd->sc_skip = 0; 1123 1124 biodone(bp); 1125 /* turn off motor 5s from now */ 1126 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 1127 fdc->sc_state = DEVIDLE; 1128 } 1129 1130 void 1131 fdc_reset(struct fdc_softc *fdc) 1132 { 1133 bus_space_tag_t t = fdc->sc_bustag; 1134 bus_space_handle_t h = fdc->sc_handle; 1135 1136 if ((fdc->sc_flags & FDC_82077) != 0) { 1137 bus_space_write_1(t, h, fdc->sc_reg_dor, 1138 FDO_FDMAEN | FDO_MOEN(0)); 1139 } 1140 1141 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 1142 delay(10); 1143 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 1144 1145 if ((fdc->sc_flags & FDC_82077) != 0) { 1146 bus_space_write_1(t, h, fdc->sc_reg_dor, 1147 FDO_FRST | FDO_FDMAEN | FDO_DS); 1148 } 1149 #ifdef FD_DEBUG 1150 if (fdc_debug) 1151 printf("fdc reset\n"); 1152 #endif 1153 } 1154 1155 void 1156 fd_set_motor(struct fdc_softc *fdc) 1157 { 1158 struct fd_softc *fd; 1159 u_char status; 1160 int n; 1161 1162 if ((fdc->sc_flags & FDC_82077) != 0) { 1163 status = FDO_FRST | FDO_FDMAEN; 1164 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1165 status |= fd->sc_drive; 1166 1167 for (n = 0; n < 4; n++) 1168 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1169 status |= FDO_MOEN(n); 1170 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1171 fdc->sc_reg_dor, status); 1172 #ifdef SUN4 1173 } else { 1174 1175 for (n = 0; n < 4; n++) { 1176 if ((fd = fdc->sc_fd[n]) != NULL && 1177 (fd->sc_flags & FD_MOTOR) != 0) { 1178 auxregbisc(AUXIO4C_FDS, 0); 1179 return; 1180 } 1181 } 1182 auxregbisc(0, AUXIO4C_FDS); 1183 #endif 1184 } 1185 } 1186 1187 void 1188 fd_motor_off(void *arg) 1189 { 1190 struct fd_softc *fd = arg; 1191 int s; 1192 1193 s = splbio(); 1194 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1195 fd_set_motor(device_private(device_parent(fd->sc_dev))); 1196 splx(s); 1197 } 1198 1199 void 1200 fd_motor_on(void *arg) 1201 { 1202 struct fd_softc *fd = arg; 1203 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 1204 int s; 1205 1206 s = splbio(); 1207 fd->sc_flags &= ~FD_MOTOR_WAIT; 1208 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1209 (void)fdcstate(fdc); 1210 splx(s); 1211 } 1212 1213 /* 1214 * Get status bytes off the FDC after a command has finished 1215 * Returns the number of status bytes read; -1 on error. 1216 * The return value is also stored in `sc_nstat'. 1217 */ 1218 int 1219 fdcresult(struct fdc_softc *fdc) 1220 { 1221 bus_space_tag_t t = fdc->sc_bustag; 1222 bus_space_handle_t h = fdc->sc_handle; 1223 int j, n = 0; 1224 1225 for (j = 10000; j; j--) { 1226 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1227 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1228 if (v == NE7_RQM) 1229 return fdc->sc_nstat = n; 1230 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1231 if (n >= sizeof(fdc->sc_status)) { 1232 log(LOG_ERR, "fdcresult: overrun\n"); 1233 return -1; 1234 } 1235 fdc->sc_status[n++] = 1236 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1237 } else 1238 delay(1); 1239 } 1240 1241 log(LOG_ERR, "fdcresult: timeout\n"); 1242 return fdc->sc_nstat = -1; 1243 } 1244 1245 /* 1246 * Write a command byte to the FDC. 1247 * Returns 0 on success; -1 on failure (i.e. timeout) 1248 */ 1249 int 1250 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1251 { 1252 bus_space_tag_t t = fdc->sc_bustag; 1253 bus_space_handle_t h = fdc->sc_handle; 1254 int i; 1255 1256 for (i = 100000; i-- > 0;) { 1257 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1258 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1259 /* The chip is ready */ 1260 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1261 return 0; 1262 } 1263 delay(1); 1264 } 1265 return -1; 1266 } 1267 1268 int 1269 fdc_diskchange(struct fdc_softc *fdc) 1270 { 1271 1272 #ifdef SUN4 1273 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1274 #endif 1275 bus_space_tag_t t = fdc->sc_bustag; 1276 bus_space_handle_t h = fdc->sc_handle; 1277 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1278 return (v & FDI_DCHG) != 0; 1279 #ifdef SUN4 1280 } else if (CPU_ISSUN4C) { 1281 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1282 } 1283 return 0; 1284 #endif 1285 } 1286 1287 int 1288 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1289 { 1290 int pmask; 1291 struct fd_softc *fd; 1292 struct fd_type *type; 1293 1294 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1295 if (fd == NULL) 1296 return ENXIO; 1297 type = fd_dev_to_type(fd, dev); 1298 if (type == NULL) 1299 return ENXIO; 1300 1301 if ((fd->sc_flags & FD_OPEN) != 0 && 1302 fd->sc_type != type) 1303 return EBUSY; 1304 1305 fd->sc_type = type; 1306 fd->sc_cylin = -1; 1307 fd->sc_flags |= FD_OPEN; 1308 1309 /* 1310 * Only update the disklabel if we're not open anywhere else. 1311 */ 1312 if (fd->sc_dk.dk_openmask == 0) 1313 fdgetdisklabel(dev); 1314 1315 pmask = (1 << DISKPART(dev)); 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 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1334 { 1335 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1336 int pmask = (1 << DISKPART(dev)); 1337 1338 fd->sc_flags &= ~FD_OPEN; 1339 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1340 1341 switch (fmt) { 1342 case S_IFCHR: 1343 fd->sc_dk.dk_copenmask &= ~pmask; 1344 break; 1345 1346 case S_IFBLK: 1347 fd->sc_dk.dk_bopenmask &= ~pmask; 1348 break; 1349 } 1350 fd->sc_dk.dk_openmask = 1351 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1352 1353 return 0; 1354 } 1355 1356 int 1357 fdread(dev_t dev, struct uio *uio, int flag) 1358 { 1359 1360 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1361 } 1362 1363 int 1364 fdwrite(dev_t dev, struct uio *uio, int flag) 1365 { 1366 1367 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1368 } 1369 1370 void 1371 fdcstart(struct fdc_softc *fdc) 1372 { 1373 1374 #ifdef DIAGNOSTIC 1375 /* only got here if controller's drive queue was inactive; should 1376 be in idle state */ 1377 if (fdc->sc_state != DEVIDLE) { 1378 printf("fdcstart: not idle\n"); 1379 return; 1380 } 1381 #endif 1382 (void)fdcstate(fdc); 1383 } 1384 1385 static void 1386 fdcpstatus(struct fdc_softc *fdc) 1387 { 1388 char bits[64]; 1389 1390 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1391 printf(" (st0 %s", bits); 1392 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1393 printf(" st1 %s", bits); 1394 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1395 printf(" st2 %s", bits); 1396 printf(" cyl %d head %d sec %d)\n", 1397 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1398 } 1399 1400 void 1401 fdcstatus(struct fdc_softc *fdc, const char *s) 1402 { 1403 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1404 int n; 1405 char bits[64]; 1406 1407 /* Just print last status */ 1408 n = fdc->sc_nstat; 1409 1410 #if 0 1411 /* 1412 * A 82072 seems to return <invalid command> on 1413 * gratuitous Sense Interrupt commands. 1414 */ 1415 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1416 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1417 (void)fdcresult(fdc); 1418 n = 2; 1419 } 1420 #endif 1421 1422 printf("%s: %s: state %d", 1423 fd ? device_xname(fd->sc_dev) : "fdc", s, fdc->sc_state); 1424 1425 switch (n) { 1426 case 0: 1427 printf("\n"); 1428 break; 1429 case 2: 1430 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1431 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1432 break; 1433 case 7: 1434 fdcpstatus(fdc); 1435 break; 1436 #ifdef DIAGNOSTIC 1437 default: 1438 printf(" fdcstatus: weird size: %d\n", n); 1439 break; 1440 #endif 1441 } 1442 } 1443 1444 void 1445 fdctimeout(void *arg) 1446 { 1447 struct fdc_softc *fdc = arg; 1448 struct fd_softc *fd; 1449 int s; 1450 1451 s = splbio(); 1452 fd = fdc->sc_drives.tqh_first; 1453 if (fd == NULL) { 1454 aprint_error_dev(fdc->sc_dev, "timeout but no I/O pending: state %d, istatus=%d\n", 1455 fdc->sc_state, fdc->sc_istatus); 1456 fdc->sc_state = DEVIDLE; 1457 goto out; 1458 } 1459 1460 if (bufq_peek(fd->sc_q) != NULL) 1461 fdc->sc_state++; 1462 else 1463 fdc->sc_state = DEVIDLE; 1464 1465 (void)fdcstate(fdc); 1466 out: 1467 splx(s); 1468 1469 } 1470 1471 void 1472 fdcpseudointr(void *arg) 1473 { 1474 struct fdc_softc *fdc = arg; 1475 int s; 1476 1477 /* Just ensure it has the right spl. */ 1478 s = splbio(); 1479 (void)fdcstate(fdc); 1480 splx(s); 1481 } 1482 1483 1484 /* 1485 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1486 * handler is available. Unfortunately, we have no reliable way to 1487 * determine that the interrupt really came from the floppy controller; 1488 * just hope that the other devices that share this interrupt level 1489 * can do better.. 1490 */ 1491 int 1492 fdc_c_hwintr(void *arg) 1493 { 1494 struct fdc_softc *fdc = arg; 1495 bus_space_tag_t t = fdc->sc_bustag; 1496 bus_space_handle_t h = fdc->sc_handle; 1497 1498 switch (fdc->sc_itask) { 1499 case FDC_ITASK_NONE: 1500 return 0; 1501 case FDC_ITASK_SENSEI: 1502 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1503 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1504 else 1505 fdc->sc_istatus = FDC_ISTATUS_DONE; 1506 softint_schedule(fdc->sc_sicookie); 1507 return 1; 1508 case FDC_ITASK_RESULT: 1509 if (fdcresult(fdc) == -1) 1510 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1511 else 1512 fdc->sc_istatus = FDC_ISTATUS_DONE; 1513 softint_schedule(fdc->sc_sicookie); 1514 return 1; 1515 case FDC_ITASK_DMA: 1516 /* Proceed with pseudo-DMA below */ 1517 break; 1518 default: 1519 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1520 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1521 softint_schedule(fdc->sc_sicookie); 1522 return 1; 1523 } 1524 1525 /* 1526 * Pseudo DMA in progress 1527 */ 1528 for (;;) { 1529 uint8_t msr; 1530 1531 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1532 1533 if ((msr & NE7_RQM) == 0) 1534 /* That's all this round. */ 1535 break; 1536 1537 if ((msr & NE7_NDM) == 0) { 1538 /* Execution phase finished, get result. */ 1539 fdcresult(fdc); 1540 fdc->sc_istatus = FDC_ISTATUS_DONE; 1541 softint_schedule(fdc->sc_sicookie); 1542 break; 1543 } 1544 1545 if (fdc->sc_tc == 0) 1546 /* For some reason the controller wants to transfer 1547 more data then what we want to transfer. */ 1548 panic("fdc: overrun"); 1549 1550 /* Another byte can be transferred */ 1551 if ((msr & NE7_DIO) != 0) 1552 *fdc->sc_data = 1553 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1554 else 1555 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1556 *fdc->sc_data); 1557 1558 fdc->sc_data++; 1559 if (--fdc->sc_tc == 0) { 1560 FTC_FLIP; 1561 break; 1562 } 1563 } 1564 return 1; 1565 } 1566 1567 void 1568 fdcswintr(void *arg) 1569 { 1570 struct fdc_softc *fdc = arg; 1571 1572 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1573 /* This (software) interrupt is not for us */ 1574 return; 1575 1576 switch (fdc->sc_istatus) { 1577 case FDC_ISTATUS_ERROR: 1578 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1579 break; 1580 case FDC_ISTATUS_SPURIOUS: 1581 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1582 break; 1583 } 1584 1585 fdcstate(fdc); 1586 return; 1587 } 1588 1589 int 1590 fdcstate(struct fdc_softc *fdc) 1591 { 1592 1593 #define st0 fdc->sc_status[0] 1594 #define st1 fdc->sc_status[1] 1595 #define cyl fdc->sc_status[1] 1596 #define FDC_WRFIFO(fdc, c) do { \ 1597 if (fdc_wrfifo(fdc, (c))) { \ 1598 goto xxx; \ 1599 } \ 1600 } while(0) 1601 1602 struct fd_softc *fd; 1603 struct buf *bp; 1604 int read, head, sec, nblks; 1605 struct fd_type *type; 1606 struct ne7_fd_formb *finfo = NULL; 1607 1608 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1609 /* Prevent loop if the reset sequence produces errors */ 1610 if (fdc->sc_state != RESETCOMPLETE && 1611 fdc->sc_state != RECALWAIT && 1612 fdc->sc_state != RECALCOMPLETE) 1613 fdc->sc_state = DORESET; 1614 } 1615 1616 /* Clear I task/status field */ 1617 fdc->sc_istatus = FDC_ISTATUS_NONE; 1618 fdc->sc_itask = FDC_ITASK_NONE; 1619 1620 loop: 1621 /* Is there a drive for the controller to do a transfer with? */ 1622 fd = fdc->sc_drives.tqh_first; 1623 if (fd == NULL) { 1624 fdc->sc_state = DEVIDLE; 1625 return 0; 1626 } 1627 1628 /* Is there a transfer to this drive? If not, deactivate drive. */ 1629 bp = bufq_peek(fd->sc_q); 1630 if (bp == NULL) { 1631 fd->sc_ops = 0; 1632 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1633 fd->sc_active = 0; 1634 goto loop; 1635 } 1636 1637 if (bp->b_flags & B_FORMAT) 1638 finfo = (struct ne7_fd_formb *)bp->b_data; 1639 1640 switch (fdc->sc_state) { 1641 case DEVIDLE: 1642 fdc->sc_errors = 0; 1643 fd->sc_skip = 0; 1644 fd->sc_bcount = bp->b_bcount; 1645 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1646 callout_stop(&fd->sc_motoroff_ch); 1647 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1648 fdc->sc_state = MOTORWAIT; 1649 return 1; 1650 } 1651 if ((fd->sc_flags & FD_MOTOR) == 0) { 1652 /* Turn on the motor, being careful about pairing. */ 1653 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1654 if (ofd && ofd->sc_flags & FD_MOTOR) { 1655 callout_stop(&ofd->sc_motoroff_ch); 1656 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1657 } 1658 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1659 fd_set_motor(fdc); 1660 fdc->sc_state = MOTORWAIT; 1661 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1662 /* Allow .25s for motor to stabilize. */ 1663 callout_reset(&fd->sc_motoron_ch, hz / 4, 1664 fd_motor_on, fd); 1665 } else { 1666 fd->sc_flags &= ~FD_MOTOR_WAIT; 1667 goto loop; 1668 } 1669 return 1; 1670 } 1671 /* Make sure the right drive is selected. */ 1672 fd_set_motor(fdc); 1673 1674 if (fdc_diskchange(fdc)) 1675 goto dodskchg; 1676 1677 /*FALLTHROUGH*/ 1678 case DOSEEK: 1679 doseek: 1680 if ((fdc->sc_flags & FDC_EIS) && 1681 (bp->b_flags & B_FORMAT) == 0) { 1682 fd->sc_cylin = bp->b_cylinder; 1683 /* We use implied seek */ 1684 goto doio; 1685 } 1686 1687 if (fd->sc_cylin == bp->b_cylinder) 1688 goto doio; 1689 1690 fd->sc_cylin = -1; 1691 fdc->sc_state = SEEKWAIT; 1692 fdc->sc_nstat = 0; 1693 1694 iostat_seek(fd->sc_dk.dk_stats); 1695 1696 disk_busy(&fd->sc_dk); 1697 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1698 1699 /* specify command */ 1700 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1701 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1702 /* XXX head load time == 6ms */ 1703 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1704 1705 fdc->sc_itask = FDC_ITASK_SENSEI; 1706 /* seek function */ 1707 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1708 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1709 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1710 return 1; 1711 1712 case DODSKCHG: 1713 dodskchg: 1714 /* 1715 * Disk change: force a seek operation by going to cyl 1 1716 * followed by a recalibrate. 1717 */ 1718 disk_busy(&fd->sc_dk); 1719 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1720 fd->sc_cylin = -1; 1721 fdc->sc_nstat = 0; 1722 fdc->sc_state = DSKCHGWAIT; 1723 1724 fdc->sc_itask = FDC_ITASK_SENSEI; 1725 /* seek function */ 1726 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1727 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1728 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1729 return 1; 1730 1731 case DSKCHGWAIT: 1732 callout_stop(&fdc->sc_timo_ch); 1733 disk_unbusy(&fd->sc_dk, 0, 0); 1734 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1735 cyl != 1 * fd->sc_type->step) { 1736 fdcstatus(fdc, "dskchg seek failed"); 1737 fdc->sc_state = DORESET; 1738 } else 1739 fdc->sc_state = DORECAL; 1740 1741 if (fdc_diskchange(fdc)) { 1742 aprint_error_dev(fdc->sc_dev, 1743 "cannot clear disk change status\n"); 1744 fdc->sc_state = DORESET; 1745 } 1746 goto loop; 1747 1748 case DOIO: 1749 doio: 1750 if (finfo != NULL) 1751 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1752 (char *)finfo; 1753 type = fd->sc_type; 1754 sec = fd->sc_blkno % type->seccyl; 1755 nblks = type->seccyl - sec; 1756 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1757 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1758 fd->sc_nblks = nblks; 1759 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1760 head = sec / type->sectrac; 1761 sec -= head * type->sectrac; 1762 #ifdef DIAGNOSTIC 1763 {int block; 1764 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1765 sec; 1766 if (block != fd->sc_blkno) { 1767 printf("fdcintr: block %d != blkno %d\n", block, 1768 (int)fd->sc_blkno); 1769 #ifdef DDB 1770 Debugger(); 1771 #endif 1772 }} 1773 #endif 1774 read = bp->b_flags & B_READ; 1775 1776 /* Setup for pseudo DMA */ 1777 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1778 fdc->sc_tc = fd->sc_nbytes; 1779 1780 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1781 fdc->sc_reg_drs, type->rate); 1782 #ifdef FD_DEBUG 1783 if (fdc_debug > 1) 1784 printf("fdcstate: doio: %s drive %d " 1785 "track %d head %d sec %d nblks %d\n", 1786 finfo ? "format" : 1787 (read ? "read" : "write"), 1788 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1789 #endif 1790 fdc->sc_state = IOCOMPLETE; 1791 fdc->sc_itask = FDC_ITASK_DMA; 1792 fdc->sc_nstat = 0; 1793 1794 disk_busy(&fd->sc_dk); 1795 1796 /* allow 3 seconds for operation */ 1797 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1798 1799 if (finfo != NULL) { 1800 /* formatting */ 1801 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1802 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1803 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1804 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1805 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1806 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1807 } else { 1808 if (read) 1809 FDC_WRFIFO(fdc, NE7CMD_READ); 1810 else 1811 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1812 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1813 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1814 FDC_WRFIFO(fdc, head); 1815 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1816 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1817 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1818 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1819 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1820 } 1821 1822 return 1; /* will return later */ 1823 1824 case SEEKWAIT: 1825 callout_stop(&fdc->sc_timo_ch); 1826 fdc->sc_state = SEEKCOMPLETE; 1827 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1828 /* allow 1/50 second for heads to settle */ 1829 callout_reset(&fdc->sc_intr_ch, hz / 50, 1830 fdcpseudointr, fdc); 1831 return 1; /* will return later */ 1832 } 1833 /*FALLTHROUGH*/ 1834 case SEEKCOMPLETE: 1835 /* no data on seek */ 1836 disk_unbusy(&fd->sc_dk, 0, 0); 1837 1838 /* Make sure seek really happened. */ 1839 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1840 cyl != bp->b_cylinder * fd->sc_type->step) { 1841 #ifdef FD_DEBUG 1842 if (fdc_debug) 1843 fdcstatus(fdc, "seek failed"); 1844 #endif 1845 fdcretry(fdc); 1846 goto loop; 1847 } 1848 fd->sc_cylin = bp->b_cylinder; 1849 goto doio; 1850 1851 case IOTIMEDOUT: 1852 /* 1853 * Try to abort the I/O operation without resetting 1854 * the chip first. Poke TC and arrange to pick up 1855 * the timed out I/O command's status. 1856 */ 1857 fdc->sc_itask = FDC_ITASK_RESULT; 1858 fdc->sc_state = IOCLEANUPWAIT; 1859 fdc->sc_nstat = 0; 1860 /* 1/10 second should be enough */ 1861 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1862 FTC_FLIP; 1863 return 1; 1864 1865 case IOCLEANUPTIMEDOUT: 1866 case SEEKTIMEDOUT: 1867 case RECALTIMEDOUT: 1868 case RESETTIMEDOUT: 1869 case DSKCHGTIMEDOUT: 1870 fdcstatus(fdc, "timeout"); 1871 1872 /* All other timeouts always roll through to a chip reset */ 1873 fdcretry(fdc); 1874 1875 /* Force reset, no matter what fdcretry() says */ 1876 fdc->sc_state = DORESET; 1877 goto loop; 1878 1879 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1880 callout_stop(&fdc->sc_timo_ch); 1881 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1882 (bp->b_flags & B_READ)); 1883 fdcretry(fdc); 1884 goto loop; 1885 1886 case IOCOMPLETE: /* IO DONE, post-analyze */ 1887 callout_stop(&fdc->sc_timo_ch); 1888 1889 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1890 (bp->b_flags & B_READ)); 1891 1892 if (fdc->sc_nstat != 7 || st1 != 0 || 1893 ((st0 & 0xf8) != 0 && 1894 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1895 #ifdef FD_DEBUG 1896 if (fdc_debug) { 1897 fdcstatus(fdc, bp->b_flags & B_READ ? 1898 "read failed" : "write failed"); 1899 printf("blkno %lld nblks %d nstat %d tc %d\n", 1900 (long long)fd->sc_blkno, fd->sc_nblks, 1901 fdc->sc_nstat, fdc->sc_tc); 1902 } 1903 #endif 1904 if (fdc->sc_nstat == 7 && 1905 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1906 1907 /* 1908 * Silently retry overruns if no other 1909 * error bit is set. Adjust threshold. 1910 */ 1911 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1912 if (thr < 15) { 1913 thr++; 1914 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1915 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1916 #ifdef FD_DEBUG 1917 if (fdc_debug) 1918 printf("fdc: %d -> threshold\n", 1919 thr); 1920 #endif 1921 fdconf(fdc); 1922 fdc->sc_overruns = 0; 1923 } 1924 if (++fdc->sc_overruns < 3) { 1925 fdc->sc_state = DOIO; 1926 goto loop; 1927 } 1928 } 1929 fdcretry(fdc); 1930 goto loop; 1931 } 1932 if (fdc->sc_errors) { 1933 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1934 fd->sc_skip / FD_BSIZE(fd), 1935 (struct disklabel *)NULL); 1936 printf("\n"); 1937 fdc->sc_errors = 0; 1938 } else { 1939 if (--fdc->sc_overruns < -20) { 1940 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1941 if (thr > 0) { 1942 thr--; 1943 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1944 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1945 #ifdef FD_DEBUG 1946 if (fdc_debug) 1947 printf("fdc: %d -> threshold\n", 1948 thr); 1949 #endif 1950 fdconf(fdc); 1951 } 1952 fdc->sc_overruns = 0; 1953 } 1954 } 1955 fd->sc_blkno += fd->sc_nblks; 1956 fd->sc_skip += fd->sc_nbytes; 1957 fd->sc_bcount -= fd->sc_nbytes; 1958 if (finfo == NULL && fd->sc_bcount > 0) { 1959 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1960 goto doseek; 1961 } 1962 fdfinish(fd, bp); 1963 goto loop; 1964 1965 case DORESET: 1966 /* try a reset, keep motor on */ 1967 fd_set_motor(fdc); 1968 delay(100); 1969 fdc->sc_nstat = 0; 1970 fdc->sc_itask = FDC_ITASK_SENSEI; 1971 fdc->sc_state = RESETCOMPLETE; 1972 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1973 fdc_reset(fdc); 1974 return 1; /* will return later */ 1975 1976 case RESETCOMPLETE: 1977 callout_stop(&fdc->sc_timo_ch); 1978 fdconf(fdc); 1979 1980 /* FALLTHROUGH */ 1981 case DORECAL: 1982 fdc->sc_state = RECALWAIT; 1983 fdc->sc_itask = FDC_ITASK_SENSEI; 1984 fdc->sc_nstat = 0; 1985 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1986 /* recalibrate function */ 1987 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1988 FDC_WRFIFO(fdc, fd->sc_drive); 1989 return 1; /* will return later */ 1990 1991 case RECALWAIT: 1992 callout_stop(&fdc->sc_timo_ch); 1993 fdc->sc_state = RECALCOMPLETE; 1994 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1995 /* allow 1/30 second for heads to settle */ 1996 callout_reset(&fdc->sc_intr_ch, hz / 30, 1997 fdcpseudointr, fdc); 1998 return 1; /* will return later */ 1999 } 2000 2001 case RECALCOMPLETE: 2002 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 2003 #ifdef FD_DEBUG 2004 if (fdc_debug) 2005 fdcstatus(fdc, "recalibrate failed"); 2006 #endif 2007 fdcretry(fdc); 2008 goto loop; 2009 } 2010 fd->sc_cylin = 0; 2011 goto doseek; 2012 2013 case MOTORWAIT: 2014 if (fd->sc_flags & FD_MOTOR_WAIT) 2015 return 1; /* time's not up yet */ 2016 goto doseek; 2017 2018 default: 2019 fdcstatus(fdc, "stray interrupt"); 2020 return 1; 2021 } 2022 #ifdef DIAGNOSTIC 2023 panic("fdcintr: impossible"); 2024 #endif 2025 2026 xxx: 2027 /* 2028 * We get here if the chip locks up in FDC_WRFIFO() 2029 * Cancel any operation and schedule a reset 2030 */ 2031 callout_stop(&fdc->sc_timo_ch); 2032 fdcretry(fdc); 2033 fdc->sc_state = DORESET; 2034 goto loop; 2035 2036 #undef st0 2037 #undef st1 2038 #undef cyl 2039 } 2040 2041 void 2042 fdcretry(struct fdc_softc *fdc) 2043 { 2044 struct fd_softc *fd; 2045 struct buf *bp; 2046 int error = EIO; 2047 2048 fd = fdc->sc_drives.tqh_first; 2049 bp = bufq_peek(fd->sc_q); 2050 2051 fdc->sc_overruns = 0; 2052 if (fd->sc_opts & FDOPT_NORETRY) 2053 goto fail; 2054 2055 switch (fdc->sc_errors) { 2056 case 0: 2057 if (fdc->sc_nstat == 7 && 2058 (fdc->sc_status[0] & 0xd8) == 0x40 && 2059 (fdc->sc_status[1] & 0x2) == 0x2) { 2060 aprint_error_dev(fdc->sc_dev, "read-only medium\n"); 2061 error = EROFS; 2062 goto failsilent; 2063 } 2064 /* try again */ 2065 fdc->sc_state = 2066 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 2067 break; 2068 2069 case 1: case 2: case 3: 2070 /* didn't work; try recalibrating */ 2071 fdc->sc_state = DORECAL; 2072 break; 2073 2074 case 4: 2075 if (fdc->sc_nstat == 7 && 2076 fdc->sc_status[0] == 0 && 2077 fdc->sc_status[1] == 0 && 2078 fdc->sc_status[2] == 0) { 2079 /* 2080 * We've retried a few times and we've got 2081 * valid status and all three status bytes 2082 * are zero. Assume this condition is the 2083 * result of no disk loaded into the drive. 2084 */ 2085 aprint_error_dev(fdc->sc_dev, "no medium?\n"); 2086 error = ENODEV; 2087 goto failsilent; 2088 } 2089 2090 /* still no go; reset the bastard */ 2091 fdc->sc_state = DORESET; 2092 break; 2093 2094 default: 2095 fail: 2096 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 2097 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2098 fd->sc_skip / FD_BSIZE(fd), 2099 (struct disklabel *)NULL); 2100 printf("\n"); 2101 fdcstatus(fdc, "controller status"); 2102 } 2103 2104 failsilent: 2105 bp->b_error = error; 2106 fdfinish(fd, bp); 2107 } 2108 fdc->sc_errors++; 2109 } 2110 2111 int 2112 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2113 { 2114 struct fd_softc *fd; 2115 struct fdc_softc *fdc; 2116 struct fdformat_parms *form_parms; 2117 struct fdformat_cmd *form_cmd; 2118 struct ne7_fd_formb *fd_formb; 2119 int il[FD_MAX_NSEC + 1]; 2120 int unit; 2121 int i, j; 2122 int error; 2123 2124 unit = FDUNIT(dev); 2125 if (unit >= fd_cd.cd_ndevs) 2126 return ENXIO; 2127 2128 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2129 fdc = device_private(device_parent(fd->sc_dev)); 2130 2131 switch (cmd) { 2132 case DIOCGDINFO: 2133 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 2134 return 0; 2135 2136 case DIOCWLABEL: 2137 if ((flag & FWRITE) == 0) 2138 return EBADF; 2139 /* XXX do something */ 2140 return 0; 2141 2142 case DIOCWDINFO: 2143 if ((flag & FWRITE) == 0) 2144 return EBADF; 2145 2146 error = setdisklabel(fd->sc_dk.dk_label, 2147 (struct disklabel *)addr, 0, 2148 fd->sc_dk.dk_cpulabel); 2149 if (error) 2150 return error; 2151 2152 error = writedisklabel(dev, fdstrategy, 2153 fd->sc_dk.dk_label, 2154 fd->sc_dk.dk_cpulabel); 2155 return error; 2156 2157 case DIOCLOCK: 2158 /* 2159 * Nothing to do here, really. 2160 */ 2161 return 0; 2162 2163 case DIOCEJECT: 2164 if (*(int *)addr == 0) { 2165 int part = DISKPART(dev); 2166 /* 2167 * Don't force eject: check that we are the only 2168 * partition open. If so, unlock it. 2169 */ 2170 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2171 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2172 fd->sc_dk.dk_openmask) { 2173 return EBUSY; 2174 } 2175 } 2176 /* FALLTHROUGH */ 2177 case ODIOCEJECT: 2178 if (fdc->sc_flags & FDC_NOEJECT) 2179 return EINVAL; 2180 fd_do_eject(fd); 2181 return 0; 2182 2183 case FDIOCGETFORMAT: 2184 form_parms = (struct fdformat_parms *)addr; 2185 form_parms->fdformat_version = FDFORMAT_VERSION; 2186 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2187 form_parms->ncyl = fd->sc_type->cylinders; 2188 form_parms->nspt = fd->sc_type->sectrac; 2189 form_parms->ntrk = fd->sc_type->heads; 2190 form_parms->stepspercyl = fd->sc_type->step; 2191 form_parms->gaplen = fd->sc_type->gap2; 2192 form_parms->fillbyte = fd->sc_type->fillbyte; 2193 form_parms->interleave = fd->sc_type->interleave; 2194 switch (fd->sc_type->rate) { 2195 case FDC_500KBPS: 2196 form_parms->xfer_rate = 500 * 1024; 2197 break; 2198 case FDC_300KBPS: 2199 form_parms->xfer_rate = 300 * 1024; 2200 break; 2201 case FDC_250KBPS: 2202 form_parms->xfer_rate = 250 * 1024; 2203 break; 2204 default: 2205 return EINVAL; 2206 } 2207 return 0; 2208 2209 case FDIOCSETFORMAT: 2210 if ((flag & FWRITE) == 0) 2211 return EBADF; /* must be opened for writing */ 2212 2213 form_parms = (struct fdformat_parms *)addr; 2214 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2215 return EINVAL;/* wrong version of formatting prog */ 2216 2217 i = form_parms->nbps >> 7; 2218 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2219 i & ~(1 << (ffs(i)-1))) 2220 /* not a power-of-two multiple of 128 */ 2221 return EINVAL; 2222 2223 switch (form_parms->xfer_rate) { 2224 case 500 * 1024: 2225 fd->sc_type->rate = FDC_500KBPS; 2226 break; 2227 case 300 * 1024: 2228 fd->sc_type->rate = FDC_300KBPS; 2229 break; 2230 case 250 * 1024: 2231 fd->sc_type->rate = FDC_250KBPS; 2232 break; 2233 default: 2234 return EINVAL; 2235 } 2236 2237 if (form_parms->nspt > FD_MAX_NSEC || 2238 form_parms->fillbyte > 0xff || 2239 form_parms->interleave > 0xff) 2240 return EINVAL; 2241 fd->sc_type->sectrac = form_parms->nspt; 2242 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2243 return EINVAL; 2244 fd->sc_type->heads = form_parms->ntrk; 2245 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2246 fd->sc_type->secsize = ffs(i)-1; 2247 fd->sc_type->gap2 = form_parms->gaplen; 2248 fd->sc_type->cylinders = form_parms->ncyl; 2249 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2250 form_parms->nbps / DEV_BSIZE; 2251 fd->sc_type->step = form_parms->stepspercyl; 2252 fd->sc_type->fillbyte = form_parms->fillbyte; 2253 fd->sc_type->interleave = form_parms->interleave; 2254 return 0; 2255 2256 case FDIOCFORMAT_TRACK: 2257 if((flag & FWRITE) == 0) 2258 /* must be opened for writing */ 2259 return EBADF; 2260 form_cmd = (struct fdformat_cmd *)addr; 2261 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2262 /* wrong version of formatting prog */ 2263 return EINVAL; 2264 2265 if (form_cmd->head >= fd->sc_type->heads || 2266 form_cmd->cylinder >= fd->sc_type->cylinders) { 2267 return EINVAL; 2268 } 2269 2270 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2271 M_TEMP, M_NOWAIT); 2272 if (fd_formb == 0) 2273 return ENOMEM; 2274 2275 fd_formb->head = form_cmd->head; 2276 fd_formb->cyl = form_cmd->cylinder; 2277 fd_formb->transfer_rate = fd->sc_type->rate; 2278 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2279 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2280 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2281 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2282 2283 memset(il, 0, sizeof il); 2284 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2285 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2286 j++; 2287 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2288 j += fd->sc_type->interleave; 2289 } 2290 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2291 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2292 fd_formb->fd_formb_headno(i) = form_cmd->head; 2293 fd_formb->fd_formb_secno(i) = il[i + 1]; 2294 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2295 } 2296 2297 error = fdformat(dev, fd_formb, l->l_proc); 2298 free(fd_formb, M_TEMP); 2299 return error; 2300 2301 case FDIOCGETOPTS: /* get drive options */ 2302 *(int *)addr = fd->sc_opts; 2303 return 0; 2304 2305 case FDIOCSETOPTS: /* set drive options */ 2306 fd->sc_opts = *(int *)addr; 2307 return 0; 2308 2309 #ifdef FD_DEBUG 2310 case _IO('f', 100): 2311 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2312 fdcresult(fdc); 2313 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2314 for (i = 0; i < fdc->sc_nstat; i++) 2315 printf(" 0x%x", fdc->sc_status[i]); 2316 printf(">\n"); 2317 return 0; 2318 2319 case _IOW('f', 101, int): 2320 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2321 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2322 fdconf(fdc); 2323 return 0; 2324 2325 case _IO('f', 102): 2326 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2327 fdcresult(fdc); 2328 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2329 for (i=0; i< fdc->sc_nstat; i++) 2330 printf(" 0x%x", fdc->sc_status[i]); 2331 printf(">\n"); 2332 return 0; 2333 #endif 2334 default: 2335 return ENOTTY; 2336 } 2337 2338 #ifdef DIAGNOSTIC 2339 panic("fdioctl: impossible"); 2340 #endif 2341 } 2342 2343 int 2344 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2345 { 2346 int rv = 0; 2347 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2348 struct fd_type *type = fd->sc_type; 2349 struct buf *bp; 2350 2351 /* set up a buffer header for fdstrategy() */ 2352 bp = getiobuf(NULL, false); 2353 if (bp == NULL) 2354 return ENOBUFS; 2355 2356 bp->b_vp = NULL; 2357 bp->b_cflags = BC_BUSY; 2358 bp->b_flags = B_PHYS | B_FORMAT; 2359 bp->b_proc = p; 2360 bp->b_dev = dev; 2361 2362 /* 2363 * Calculate a fake blkno, so fdstrategy() would initiate a 2364 * seek to the requested cylinder. 2365 */ 2366 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2367 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2368 / DEV_BSIZE; 2369 2370 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2371 bp->b_data = (void *)finfo; 2372 2373 #ifdef FD_DEBUG 2374 if (fdc_debug) { 2375 int i; 2376 2377 printf("fdformat: blkno 0x%llx count %d\n", 2378 (unsigned long long)bp->b_blkno, bp->b_bcount); 2379 2380 printf("\tcyl:\t%d\n", finfo->cyl); 2381 printf("\thead:\t%d\n", finfo->head); 2382 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2383 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2384 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2385 printf("\ttrack data:"); 2386 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2387 printf(" [c%d h%d s%d]", 2388 finfo->fd_formb_cylno(i), 2389 finfo->fd_formb_headno(i), 2390 finfo->fd_formb_secno(i) ); 2391 if (finfo->fd_formb_secsize(i) != 2) 2392 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2393 } 2394 printf("\n"); 2395 } 2396 #endif 2397 2398 /* now do the format */ 2399 fdstrategy(bp); 2400 2401 /* ...and wait for it to complete */ 2402 rv = biowait(bp); 2403 putiobuf(bp); 2404 return rv; 2405 } 2406 2407 void 2408 fdgetdisklabel(dev_t dev) 2409 { 2410 int i; 2411 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2412 struct disklabel *lp = fd->sc_dk.dk_label; 2413 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2414 2415 memset(lp, 0, sizeof(struct disklabel)); 2416 memset(lp, 0, sizeof(struct cpu_disklabel)); 2417 2418 lp->d_type = DTYPE_FLOPPY; 2419 lp->d_secsize = FD_BSIZE(fd); 2420 lp->d_secpercyl = fd->sc_type->seccyl; 2421 lp->d_nsectors = fd->sc_type->sectrac; 2422 lp->d_ncylinders = fd->sc_type->cylinders; 2423 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2424 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2425 lp->d_rpm = 300; /* XXX like it matters... */ 2426 2427 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2428 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2429 lp->d_interleave = 1; 2430 lp->d_flags = D_REMOVABLE; 2431 2432 lp->d_partitions[RAW_PART].p_offset = 0; 2433 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2434 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2435 lp->d_npartitions = RAW_PART + 1; 2436 2437 lp->d_magic = DISKMAGIC; 2438 lp->d_magic2 = DISKMAGIC; 2439 lp->d_checksum = dkcksum(lp); 2440 2441 /* 2442 * Call the generic disklabel extraction routine. If there's 2443 * not a label there, fake it. 2444 */ 2445 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2446 strncpy(lp->d_packname, "default label", 2447 sizeof(lp->d_packname)); 2448 /* 2449 * Reset the partition info; it might have gotten 2450 * trashed in readdisklabel(). 2451 * 2452 * XXX Why do we have to do this? readdisklabel() 2453 * should be safe... 2454 */ 2455 for (i = 0; i < MAXPARTITIONS; ++i) { 2456 lp->d_partitions[i].p_offset = 0; 2457 if (i == RAW_PART) { 2458 lp->d_partitions[i].p_size = 2459 lp->d_secpercyl * lp->d_ncylinders; 2460 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2461 } else { 2462 lp->d_partitions[i].p_size = 0; 2463 lp->d_partitions[i].p_fstype = FS_UNUSED; 2464 } 2465 } 2466 lp->d_npartitions = RAW_PART + 1; 2467 } 2468 } 2469 2470 void 2471 fd_do_eject(struct fd_softc *fd) 2472 { 2473 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); 2474 2475 #ifdef SUN4 2476 if (CPU_ISSUN4C) { 2477 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2478 delay(10); 2479 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2480 return; 2481 } 2482 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2483 #endif 2484 bus_space_tag_t t = fdc->sc_bustag; 2485 bus_space_handle_t h = fdc->sc_handle; 2486 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2487 2488 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2489 delay(10); 2490 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2491 return; 2492 #ifdef SUN4 2493 } 2494 #endif 2495 } 2496 2497 /* ARGSUSED */ 2498 void 2499 fd_mountroot_hook(device_t dev) 2500 { 2501 int c; 2502 2503 fd_do_eject((struct fd_softc *)dev); 2504 printf("Insert filesystem floppy and press return."); 2505 for (;;) { 2506 c = cngetc(); 2507 if ((c == '\r') || (c == '\n')) { 2508 printf("\n"); 2509 break; 2510 } 2511 } 2512 } 2513 2514 #ifdef MEMORY_DISK_HOOKS 2515 2516 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2517 2518 int 2519 fd_read_md_image(size_t *sizep, void **addrp) 2520 { 2521 struct buf buf, *bp = &buf; 2522 dev_t dev; 2523 off_t offset; 2524 char *addr; 2525 2526 dev = makedev(54,0); /* XXX */ 2527 2528 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2529 *addrp = addr; 2530 2531 if (fdopen(dev, 0, S_IFCHR, NULL)) 2532 panic("fd: mountroot: fdopen"); 2533 2534 offset = 0; 2535 2536 for (;;) { 2537 bp->b_dev = dev; 2538 bp->b_error = 0; 2539 bp->b_resid = 0; 2540 bp->b_proc = NULL; 2541 bp->b_cflags = BC_BUSY; 2542 bp->b_flags = B_PHYS | B_RAW | B_READ; 2543 bp->b_blkno = btodb(offset); 2544 bp->b_bcount = DEV_BSIZE; 2545 bp->b_data = addr; 2546 fdstrategy(bp); 2547 biowait(bp); 2548 if (bp->b_error) 2549 panic("fd: mountroot: fdread error %d", bp->b_error); 2550 2551 if (bp->b_resid != 0) 2552 break; 2553 2554 addr += DEV_BSIZE; 2555 offset += DEV_BSIZE; 2556 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2557 break; 2558 } 2559 (void)fdclose(dev, 0, S_IFCHR, NULL); 2560 *sizep = offset; 2561 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2562 return 0; 2563 } 2564 #endif /* MEMORY_DISK_HOOKS */ 2565 2566 static void 2567 fd_set_geometry(struct fd_softc *fd) 2568 { 2569 const struct fd_type *fdt; 2570 2571 fdt = fd->sc_type; 2572 if (fdt == NULL) { 2573 fdt = fd->sc_deftype; 2574 if (fdt == NULL) 2575 return; 2576 } 2577 2578 struct disk_geom *dg = &fd->sc_dkdev.dk_geom; 2579 2580 memset(dg, 0, sizeof(*dg)); 2581 dg->dg_secperunit = fdt->size; 2582 dg->dg_nsectors = fdt->sectrac; 2583 switch (fdt->secsize) { 2584 case 2: 2585 dg->dg_secsize = 512; 2586 break; 2587 case 3: 2588 dg->dg_secsize = 1024; 2589 break; 2590 default: 2591 break; 2592 } 2593 dg->dg_ntracks = fdt->heads; 2594 dg->dg_ncylinders = fdt->cyls; 2595 disk_set_info(fd->sc_dev, &fd->sc_dkdev, NULL); 2596 } 2597
Indexes created Tue Sep 30 07:10:03 GMT 2025