fd.c revision 1.115
1 /* $NetBSD: fd.c,v 1.115 2004/09/19 19:09:24 he Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /*- 74 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 75 * 76 * This code is derived from software contributed to Berkeley by 77 * Don Ahn. 78 * 79 * Redistribution and use in source and binary forms, with or without 80 * modification, are permitted provided that the following conditions 81 * are met: 82 * 1. Redistributions of source code must retain the above copyright 83 * notice, this list of conditions and the following disclaimer. 84 * 2. Redistributions in binary form must reproduce the above copyright 85 * notice, this list of conditions and the following disclaimer in the 86 * documentation and/or other materials provided with the distribution. 87 * 3. All advertising materials mentioning features or use of this software 88 * must display the following acknowledgement: 89 * This product includes software developed by the University of 90 * California, Berkeley and its contributors. 91 * 4. Neither the name of the University nor the names of its contributors 92 * may be used to endorse or promote products derived from this software 93 * without specific prior written permission. 94 * 95 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 96 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 97 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 98 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 99 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 100 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 101 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 103 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 104 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 105 * SUCH DAMAGE. 106 * 107 * @(#)fd.c 7.4 (Berkeley) 5/25/91 108 */ 109 110 #include <sys/cdefs.h> 111 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.115 2004/09/19 19:09:24 he Exp $"); 112 113 #include "opt_ddb.h" 114 #include "opt_md.h" 115 116 #include <sys/param.h> 117 #include <sys/systm.h> 118 #include <sys/callout.h> 119 #include <sys/kernel.h> 120 #include <sys/file.h> 121 #include <sys/ioctl.h> 122 #include <sys/device.h> 123 #include <sys/disklabel.h> 124 #include <sys/disk.h> 125 #include <sys/fdio.h> 126 #include <sys/buf.h> 127 #include <sys/malloc.h> 128 #include <sys/proc.h> 129 #include <sys/uio.h> 130 #include <sys/stat.h> 131 #include <sys/syslog.h> 132 #include <sys/queue.h> 133 #include <sys/conf.h> 134 135 #include <dev/cons.h> 136 137 #include <uvm/uvm_extern.h> 138 139 #include <machine/autoconf.h> 140 #include <machine/intr.h> 141 142 #include <sparc/sparc/auxreg.h> 143 #include <sparc/dev/fdreg.h> 144 #include <sparc/dev/fdvar.h> 145 146 #define FDUNIT(dev) (minor(dev) / 8) 147 #define FDTYPE(dev) (minor(dev) % 8) 148 149 /* XXX misuse a flag to identify format operation */ 150 #define B_FORMAT B_XXX 151 152 #define FD_DEBUG 153 #ifdef FD_DEBUG 154 int fdc_debug = 0; 155 #endif 156 157 enum fdc_state { 158 DEVIDLE = 0, 159 MOTORWAIT, /* 1 */ 160 DOSEEK, /* 2 */ 161 SEEKWAIT, /* 3 */ 162 SEEKTIMEDOUT, /* 4 */ 163 SEEKCOMPLETE, /* 5 */ 164 DOIO, /* 6 */ 165 IOCOMPLETE, /* 7 */ 166 IOTIMEDOUT, /* 8 */ 167 IOCLEANUPWAIT, /* 9 */ 168 IOCLEANUPTIMEDOUT,/*10 */ 169 DORESET, /* 11 */ 170 RESETCOMPLETE, /* 12 */ 171 RESETTIMEDOUT, /* 13 */ 172 DORECAL, /* 14 */ 173 RECALWAIT, /* 15 */ 174 RECALTIMEDOUT, /* 16 */ 175 RECALCOMPLETE, /* 17 */ 176 DODSKCHG, /* 18 */ 177 DSKCHGWAIT, /* 19 */ 178 DSKCHGTIMEDOUT, /* 20 */ 179 }; 180 181 /* software state, per controller */ 182 struct fdc_softc { 183 struct device sc_dev; /* boilerplate */ 184 bus_space_tag_t sc_bustag; 185 186 struct callout sc_timo_ch; /* timeout callout */ 187 struct callout sc_intr_ch; /* pseudo-intr callout */ 188 189 struct fd_softc *sc_fd[4]; /* pointers to children */ 190 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 191 enum fdc_state sc_state; 192 int sc_flags; 193 #define FDC_82077 0x01 194 #define FDC_NEEDHEADSETTLE 0x02 195 #define FDC_EIS 0x04 196 #define FDC_NEEDMOTORWAIT 0x08 197 int sc_errors; /* number of retries so far */ 198 int sc_overruns; /* number of DMA overruns */ 199 int sc_cfg; /* current configuration */ 200 struct fdcio sc_io; 201 #define sc_handle sc_io.fdcio_handle 202 #define sc_reg_msr sc_io.fdcio_reg_msr 203 #define sc_reg_fifo sc_io.fdcio_reg_fifo 204 #define sc_reg_dor sc_io.fdcio_reg_dor 205 #define sc_reg_dir sc_io.fdcio_reg_dir 206 #define sc_reg_drs sc_io.fdcio_reg_msr 207 #define sc_itask sc_io.fdcio_itask 208 #define sc_istatus sc_io.fdcio_istatus 209 #define sc_data sc_io.fdcio_data 210 #define sc_tc sc_io.fdcio_tc 211 #define sc_nstat sc_io.fdcio_nstat 212 #define sc_status sc_io.fdcio_status 213 #define sc_intrcnt sc_io.fdcio_intrcnt 214 215 void *sc_sicookie; /* softintr(9) cookie */ 216 }; 217 218 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 219 220 /* controller driver configuration */ 221 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 222 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 223 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 224 void fdcattach_obio __P((struct device *, struct device *, void *)); 225 226 int fdcattach __P((struct fdc_softc *, int)); 227 228 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 229 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 230 231 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 232 fdcmatch_obio, fdcattach_obio, NULL, NULL); 233 234 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 235 236 /* 237 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 238 * we tell them apart. 239 */ 240 struct fd_type { 241 int sectrac; /* sectors per track */ 242 int heads; /* number of heads */ 243 int seccyl; /* sectors per cylinder */ 244 int secsize; /* size code for sectors */ 245 int datalen; /* data len when secsize = 0 */ 246 int steprate; /* step rate and head unload time */ 247 int gap1; /* gap len between sectors */ 248 int gap2; /* formatting gap */ 249 int cylinders; /* total num of cylinders */ 250 int size; /* size of disk in sectors */ 251 int step; /* steps per cylinder */ 252 int rate; /* transfer speed code */ 253 int fillbyte; /* format fill byte */ 254 int interleave; /* interleave factor (formatting) */ 255 char *name; 256 }; 257 258 /* The order of entries in the following table is important -- BEWARE! */ 259 struct fd_type fd_types[] = { 260 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 261 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 262 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 263 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 264 }; 265 266 /* software state, per disk (with up to 4 disks per ctlr) */ 267 struct fd_softc { 268 struct device sc_dv; /* generic device info */ 269 struct disk sc_dk; /* generic disk info */ 270 271 struct fd_type *sc_deftype; /* default type descriptor */ 272 struct fd_type *sc_type; /* current type descriptor */ 273 274 struct callout sc_motoron_ch; 275 struct callout sc_motoroff_ch; 276 277 daddr_t sc_blkno; /* starting block number */ 278 int sc_bcount; /* byte count left */ 279 int sc_skip; /* bytes already transferred */ 280 int sc_nblks; /* number of blocks currently transferring */ 281 int sc_nbytes; /* number of bytes currently transferring */ 282 283 int sc_drive; /* physical unit number */ 284 int sc_flags; 285 #define FD_OPEN 0x01 /* it's open */ 286 #define FD_MOTOR 0x02 /* motor should be on */ 287 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 288 int sc_cylin; /* where we think the head is */ 289 int sc_opts; /* user-set options */ 290 291 void *sc_sdhook; /* shutdownhook cookie */ 292 293 TAILQ_ENTRY(fd_softc) sc_drivechain; 294 int sc_ops; /* I/O ops since last switch */ 295 struct bufq_state sc_q; /* pending I/O requests */ 296 int sc_active; /* number of active I/O requests */ 297 }; 298 299 /* floppy driver configuration */ 300 int fdmatch __P((struct device *, struct cfdata *, void *)); 301 void fdattach __P((struct device *, struct device *, void *)); 302 303 CFATTACH_DECL(fd, sizeof(struct fd_softc), 304 fdmatch, fdattach, NULL, NULL); 305 306 extern struct cfdriver fd_cd; 307 308 dev_type_open(fdopen); 309 dev_type_close(fdclose); 310 dev_type_read(fdread); 311 dev_type_write(fdwrite); 312 dev_type_ioctl(fdioctl); 313 dev_type_strategy(fdstrategy); 314 315 const struct bdevsw fd_bdevsw = { 316 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 317 }; 318 319 const struct cdevsw fd_cdevsw = { 320 fdopen, fdclose, fdread, fdwrite, fdioctl, 321 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 322 }; 323 324 void fdgetdisklabel __P((dev_t)); 325 int fd_get_parms __P((struct fd_softc *)); 326 void fdstart __P((struct fd_softc *)); 327 int fdprint __P((void *, const char *)); 328 329 struct dkdriver fddkdriver = { fdstrategy }; 330 331 struct fd_type *fd_nvtotype __P((char *, int, int)); 332 void fd_set_motor __P((struct fdc_softc *fdc)); 333 void fd_motor_off __P((void *arg)); 334 void fd_motor_on __P((void *arg)); 335 int fdcresult __P((struct fdc_softc *fdc)); 336 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 337 void fdcstart __P((struct fdc_softc *fdc)); 338 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 339 void fdc_reset __P((struct fdc_softc *fdc)); 340 int fdc_diskchange __P((struct fdc_softc *fdc)); 341 void fdctimeout __P((void *arg)); 342 void fdcpseudointr __P((void *arg)); 343 int fdc_c_hwintr __P((void *)); 344 void fdchwintr __P((void)); 345 void fdcswintr __P((void *)); 346 int fdcstate __P((struct fdc_softc *)); 347 void fdcretry __P((struct fdc_softc *fdc)); 348 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 349 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 350 void fd_do_eject __P((struct fd_softc *)); 351 void fd_mountroot_hook __P((struct device *)); 352 static int fdconf __P((struct fdc_softc *)); 353 static void establish_chip_type __P(( 354 struct fdc_softc *, 355 bus_space_tag_t, 356 bus_addr_t, 357 bus_size_t, 358 bus_space_handle_t)); 359 360 361 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 362 363 int 364 fdcmatch_mainbus(parent, match, aux) 365 struct device *parent; 366 struct cfdata *match; 367 void *aux; 368 { 369 struct mainbus_attach_args *ma = aux; 370 371 /* 372 * Floppy controller is on mainbus on sun4c. 373 */ 374 if (!CPU_ISSUN4C) 375 return (0); 376 377 /* sun4c PROMs call the controller "fd" */ 378 if (strcmp("fd", ma->ma_name) != 0) 379 return (0); 380 381 return (bus_space_probe(ma->ma_bustag, 382 ma->ma_paddr, 383 1, /* probe size */ 384 0, /* offset */ 385 0, /* flags */ 386 NULL, NULL)); 387 } 388 389 int 390 fdcmatch_obio(parent, match, aux) 391 struct device *parent; 392 struct cfdata *match; 393 void *aux; 394 { 395 union obio_attach_args *uoba = aux; 396 struct sbus_attach_args *sa; 397 398 /* 399 * Floppy controller is on obio on sun4m. 400 */ 401 if (uoba->uoba_isobio4 != 0) 402 return (0); 403 404 sa = &uoba->uoba_sbus; 405 406 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 407 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 408 return (0); 409 410 return (bus_space_probe(sa->sa_bustag, 411 sbus_bus_addr(sa->sa_bustag, 412 sa->sa_slot, sa->sa_offset), 413 1, /* probe size */ 414 0, /* offset */ 415 0, /* flags */ 416 NULL, NULL)); 417 } 418 419 static void 420 establish_chip_type(fdc, tag, addr, size, handle) 421 struct fdc_softc *fdc; 422 bus_space_tag_t tag; 423 bus_addr_t addr; 424 bus_size_t size; 425 bus_space_handle_t handle; 426 { 427 u_int8_t v; 428 429 /* 430 * This hack from Chris Torek: apparently DOR really 431 * addresses MSR/DRS on a 82072. 432 * We used to rely on the VERSION command to tell the 433 * difference (which did not work). 434 */ 435 436 /* First, check the size of the register bank */ 437 if (size < 8) 438 /* It isn't a 82077 */ 439 return; 440 441 /* Then probe the DOR register offset */ 442 if (bus_space_probe(tag, addr, 443 1, /* probe size */ 444 FDREG77_DOR, /* offset */ 445 0, /* flags */ 446 NULL, NULL) == 0) { 447 448 /* It isn't a 82077 */ 449 return; 450 } 451 452 v = bus_space_read_1(tag, handle, FDREG77_DOR); 453 if (v == NE7_RQM) { 454 /* 455 * Value in DOR looks like it's really MSR 456 */ 457 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 458 v = bus_space_read_1(tag, handle, FDREG77_DOR); 459 if (v == NE7_RQM) { 460 /* 461 * The value in the DOR didn't stick; 462 * it isn't a 82077 463 */ 464 return; 465 } 466 } 467 468 fdc->sc_flags |= FDC_82077; 469 } 470 471 /* 472 * Arguments passed between fdcattach and fdprobe. 473 */ 474 struct fdc_attach_args { 475 int fa_drive; 476 struct fd_type *fa_deftype; 477 }; 478 479 /* 480 * Print the location of a disk drive (called just before attaching the 481 * the drive). If `fdc' is not NULL, the drive was found but was not 482 * in the system config file; print the drive name as well. 483 * Return QUIET (config_find ignores this if the device was configured) to 484 * avoid printing `fdN not configured' messages. 485 */ 486 int 487 fdprint(aux, fdc) 488 void *aux; 489 const char *fdc; 490 { 491 register struct fdc_attach_args *fa = aux; 492 493 if (!fdc) 494 aprint_normal(" drive %d", fa->fa_drive); 495 return (QUIET); 496 } 497 498 /* 499 * Configure several parameters and features on the FDC. 500 * Return 0 on success. 501 */ 502 static int 503 fdconf(fdc) 504 struct fdc_softc *fdc; 505 { 506 int vroom; 507 508 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 509 return (-1); 510 511 /* 512 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 513 * the PROM thinks is appropriate. 514 */ 515 if ((vroom = fdc->sc_status[7]) == 0) 516 vroom = 0x64; 517 518 /* Configure controller to use FIFO and Implied Seek */ 519 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 520 return (-1); 521 if (fdc_wrfifo(fdc, vroom) != 0) 522 return (-1); 523 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 524 return (-1); 525 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 526 return (-1); 527 /* No result phase for the NE7CMD_CFG command */ 528 529 if ((fdc->sc_flags & FDC_82077) != 0) { 530 /* Lock configuration across soft resets. */ 531 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 532 fdcresult(fdc) != 1) { 533 #ifdef DEBUG 534 printf("fdconf: CFGLOCK failed"); 535 #endif 536 return (-1); 537 } 538 } 539 540 return (0); 541 #if 0 542 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 543 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 544 if (fdc_debug) 545 printf("[version cmd]"); 546 } 547 #endif 548 } 549 550 void 551 fdcattach_mainbus(parent, self, aux) 552 struct device *parent, *self; 553 void *aux; 554 { 555 struct fdc_softc *fdc = (void *)self; 556 struct mainbus_attach_args *ma = aux; 557 558 fdc->sc_bustag = ma->ma_bustag; 559 560 if (bus_space_map( 561 ma->ma_bustag, 562 ma->ma_paddr, 563 ma->ma_size, 564 BUS_SPACE_MAP_LINEAR, 565 &fdc->sc_handle) != 0) { 566 printf("%s: cannot map registers\n", self->dv_xname); 567 return; 568 } 569 570 establish_chip_type(fdc, 571 ma->ma_bustag, 572 ma->ma_paddr, 573 ma->ma_size, 574 fdc->sc_handle); 575 576 if (fdcattach(fdc, ma->ma_pri) != 0) 577 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 578 } 579 580 void 581 fdcattach_obio(parent, self, aux) 582 struct device *parent, *self; 583 void *aux; 584 { 585 struct fdc_softc *fdc = (void *)self; 586 union obio_attach_args *uoba = aux; 587 struct sbus_attach_args *sa = &uoba->uoba_sbus; 588 589 if (sa->sa_nintr == 0) { 590 printf(": no interrupt line configured\n"); 591 return; 592 } 593 594 fdc->sc_bustag = sa->sa_bustag; 595 596 if (sbus_bus_map(sa->sa_bustag, 597 sa->sa_slot, sa->sa_offset, sa->sa_size, 598 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 599 printf("%s: cannot map control registers\n", 600 self->dv_xname); 601 return; 602 } 603 604 establish_chip_type(fdc, 605 sa->sa_bustag, 606 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 607 sa->sa_size, 608 fdc->sc_handle); 609 610 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 611 printf(": no drives attached\n"); 612 return; 613 } 614 615 if (fdcattach(fdc, sa->sa_pri) != 0) 616 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 617 } 618 619 int 620 fdcattach(fdc, pri) 621 struct fdc_softc *fdc; 622 int pri; 623 { 624 struct fdc_attach_args fa; 625 int drive_attached; 626 char code; 627 628 callout_init(&fdc->sc_timo_ch); 629 callout_init(&fdc->sc_intr_ch); 630 631 fdc->sc_state = DEVIDLE; 632 fdc->sc_itask = FDC_ITASK_NONE; 633 fdc->sc_istatus = FDC_ISTATUS_NONE; 634 fdc->sc_flags |= FDC_EIS; 635 TAILQ_INIT(&fdc->sc_drives); 636 637 if ((fdc->sc_flags & FDC_82077) != 0) { 638 fdc->sc_reg_msr = FDREG77_MSR; 639 fdc->sc_reg_fifo = FDREG77_FIFO; 640 fdc->sc_reg_dor = FDREG77_DOR; 641 fdc->sc_reg_dir = FDREG77_DIR; 642 code = '7'; 643 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 644 } else { 645 fdc->sc_reg_msr = FDREG72_MSR; 646 fdc->sc_reg_fifo = FDREG72_FIFO; 647 fdc->sc_reg_dor = 0; 648 code = '2'; 649 } 650 651 /* 652 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 653 * Note: CFG_EFIFO is active-low, initial threshold value: 8 654 */ 655 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 656 if (fdconf(fdc) != 0) { 657 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 658 return (-1); 659 } 660 661 fdciop = &fdc->sc_io; 662 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 663 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 664 printf("\n%s: cannot register interrupt handler\n", 665 fdc->sc_dev.dv_xname); 666 return (-1); 667 } 668 669 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 670 if (fdc->sc_sicookie == NULL) { 671 printf("\n%s: cannot register soft interrupt handler\n", 672 fdc->sc_dev.dv_xname); 673 return (-1); 674 } 675 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 676 677 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 678 fdc->sc_dev.dv_xname, "intr"); 679 680 /* physical limit: four drives per controller. */ 681 drive_attached = 0; 682 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 683 fa.fa_deftype = NULL; /* unknown */ 684 fa.fa_deftype = &fd_types[0]; /* XXX */ 685 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 686 drive_attached = 1; 687 } 688 689 if (drive_attached == 0) { 690 /* XXX - dis-establish interrupts here */ 691 /* return (-1); */ 692 } 693 694 return (0); 695 } 696 697 int 698 fdmatch(parent, match, aux) 699 struct device *parent; 700 struct cfdata *match; 701 void *aux; 702 { 703 struct fdc_softc *fdc = (void *)parent; 704 bus_space_tag_t t = fdc->sc_bustag; 705 bus_space_handle_t h = fdc->sc_handle; 706 struct fdc_attach_args *fa = aux; 707 int drive = fa->fa_drive; 708 int n, ok; 709 710 if (drive > 0) 711 /* XXX - for now, punt on more than one drive */ 712 return (0); 713 714 if ((fdc->sc_flags & FDC_82077) != 0) { 715 /* select drive and turn on motor */ 716 bus_space_write_1(t, h, fdc->sc_reg_dor, 717 drive | FDO_FRST | FDO_MOEN(drive)); 718 /* wait for motor to spin up */ 719 delay(250000); 720 } else { 721 auxregbisc(AUXIO4C_FDS, 0); 722 } 723 fdc->sc_nstat = 0; 724 fdc_wrfifo(fdc, NE7CMD_RECAL); 725 fdc_wrfifo(fdc, drive); 726 727 /* Wait for recalibration to complete */ 728 for (n = 0; n < 10000; n++) { 729 u_int8_t v; 730 731 delay(1000); 732 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 733 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 734 /* wait a bit longer till device *really* is ready */ 735 delay(100000); 736 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 737 break; 738 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 739 /* 740 * Got `invalid command'; we interpret it 741 * to mean that the re-calibrate hasn't in 742 * fact finished yet 743 */ 744 continue; 745 break; 746 } 747 } 748 n = fdc->sc_nstat; 749 #ifdef FD_DEBUG 750 if (fdc_debug) { 751 int i; 752 printf("fdprobe: %d stati:", n); 753 for (i = 0; i < n; i++) 754 printf(" 0x%x", fdc->sc_status[i]); 755 printf("\n"); 756 } 757 #endif 758 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 759 760 /* turn off motor */ 761 if ((fdc->sc_flags & FDC_82077) != 0) { 762 /* deselect drive and turn motor off */ 763 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 764 } else { 765 auxregbisc(0, AUXIO4C_FDS); 766 } 767 768 return (ok); 769 } 770 771 /* 772 * Controller is working, and drive responded. Attach it. 773 */ 774 void 775 fdattach(parent, self, aux) 776 struct device *parent, *self; 777 void *aux; 778 { 779 struct fdc_softc *fdc = (void *)parent; 780 struct fd_softc *fd = (void *)self; 781 struct fdc_attach_args *fa = aux; 782 struct fd_type *type = fa->fa_deftype; 783 int drive = fa->fa_drive; 784 785 callout_init(&fd->sc_motoron_ch); 786 callout_init(&fd->sc_motoroff_ch); 787 788 /* XXX Allow `flags' to override device type? */ 789 790 if (type) 791 printf(": %s %d cyl, %d head, %d sec\n", type->name, 792 type->cylinders, type->heads, type->sectrac); 793 else 794 printf(": density unknown\n"); 795 796 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 797 fd->sc_cylin = -1; 798 fd->sc_drive = drive; 799 fd->sc_deftype = type; 800 fdc->sc_fd[drive] = fd; 801 802 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 803 fdc_wrfifo(fdc, type->steprate); 804 /* XXX head load time == 6ms */ 805 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 806 807 /* 808 * Initialize and attach the disk structure. 809 */ 810 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 811 fd->sc_dk.dk_driver = &fddkdriver; 812 disk_attach(&fd->sc_dk); 813 814 /* 815 * Establish a mountroot_hook anyway in case we booted 816 * with RB_ASKNAME and get selected as the boot device. 817 */ 818 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 819 820 /* Make sure the drive motor gets turned off at shutdown time. */ 821 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 822 } 823 824 __inline struct fd_type * 825 fd_dev_to_type(fd, dev) 826 struct fd_softc *fd; 827 dev_t dev; 828 { 829 int type = FDTYPE(dev); 830 831 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 832 return (NULL); 833 return (type ? &fd_types[type - 1] : fd->sc_deftype); 834 } 835 836 void 837 fdstrategy(bp) 838 register struct buf *bp; /* IO operation to perform */ 839 { 840 struct fd_softc *fd; 841 int unit = FDUNIT(bp->b_dev); 842 int sz; 843 int s; 844 845 /* Valid unit, controller, and request? */ 846 if (unit >= fd_cd.cd_ndevs || 847 (fd = fd_cd.cd_devs[unit]) == 0 || 848 bp->b_blkno < 0 || 849 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 850 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 851 (bp->b_flags & B_FORMAT) == 0)) { 852 bp->b_error = EINVAL; 853 goto bad; 854 } 855 856 /* If it's a null transfer, return immediately. */ 857 if (bp->b_bcount == 0) 858 goto done; 859 860 sz = howmany(bp->b_bcount, DEV_BSIZE); 861 862 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 863 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 864 - bp->b_blkno; 865 if (sz == 0) { 866 /* If exactly at end of disk, return EOF. */ 867 bp->b_resid = bp->b_bcount; 868 goto done; 869 } 870 if (sz < 0) { 871 /* If past end of disk, return EINVAL. */ 872 bp->b_error = EINVAL; 873 goto bad; 874 } 875 /* Otherwise, truncate request. */ 876 bp->b_bcount = sz << DEV_BSHIFT; 877 } 878 879 bp->b_rawblkno = bp->b_blkno; 880 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 881 (FD_BSIZE(fd) * fd->sc_type->seccyl); 882 883 #ifdef FD_DEBUG 884 if (fdc_debug > 1) 885 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 886 (long long)bp->b_blkno, bp->b_bcount, 887 (long long)fd->sc_blkno, bp->b_cylinder); 888 #endif 889 890 /* Queue transfer on drive, activate drive and controller if idle. */ 891 s = splbio(); 892 BUFQ_PUT(&fd->sc_q, bp); 893 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 894 if (fd->sc_active == 0) 895 fdstart(fd); 896 #ifdef DIAGNOSTIC 897 else { 898 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 899 if (fdc->sc_state == DEVIDLE) { 900 printf("fdstrategy: controller inactive\n"); 901 fdcstart(fdc); 902 } 903 } 904 #endif 905 splx(s); 906 return; 907 908 bad: 909 bp->b_flags |= B_ERROR; 910 done: 911 /* Toss transfer; we're done early. */ 912 biodone(bp); 913 } 914 915 void 916 fdstart(fd) 917 struct fd_softc *fd; 918 { 919 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 920 int active = fdc->sc_drives.tqh_first != 0; 921 922 /* Link into controller queue. */ 923 fd->sc_active = 1; 924 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 925 926 /* If controller not already active, start it. */ 927 if (!active) 928 fdcstart(fdc); 929 } 930 931 void 932 fdfinish(fd, bp) 933 struct fd_softc *fd; 934 struct buf *bp; 935 { 936 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 937 938 /* 939 * Move this drive to the end of the queue to give others a `fair' 940 * chance. We only force a switch if N operations are completed while 941 * another drive is waiting to be serviced, since there is a long motor 942 * startup delay whenever we switch. 943 */ 944 (void)BUFQ_GET(&fd->sc_q); 945 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 946 fd->sc_ops = 0; 947 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 948 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 949 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 950 } else 951 fd->sc_active = 0; 952 } 953 bp->b_resid = fd->sc_bcount; 954 fd->sc_skip = 0; 955 956 biodone(bp); 957 /* turn off motor 5s from now */ 958 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 959 fdc->sc_state = DEVIDLE; 960 } 961 962 void 963 fdc_reset(fdc) 964 struct fdc_softc *fdc; 965 { 966 bus_space_tag_t t = fdc->sc_bustag; 967 bus_space_handle_t h = fdc->sc_handle; 968 969 if ((fdc->sc_flags & FDC_82077) != 0) { 970 bus_space_write_1(t, h, fdc->sc_reg_dor, 971 FDO_FDMAEN | FDO_MOEN(0)); 972 } 973 974 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 975 delay(10); 976 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 977 978 if ((fdc->sc_flags & FDC_82077) != 0) { 979 bus_space_write_1(t, h, fdc->sc_reg_dor, 980 FDO_FRST | FDO_FDMAEN | FDO_DS); 981 } 982 #ifdef FD_DEBUG 983 if (fdc_debug) 984 printf("fdc reset\n"); 985 #endif 986 } 987 988 void 989 fd_set_motor(fdc) 990 struct fdc_softc *fdc; 991 { 992 struct fd_softc *fd; 993 u_char status; 994 int n; 995 996 if ((fdc->sc_flags & FDC_82077) != 0) { 997 status = FDO_FRST | FDO_FDMAEN; 998 if ((fd = fdc->sc_drives.tqh_first) != NULL) 999 status |= fd->sc_drive; 1000 1001 for (n = 0; n < 4; n++) 1002 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1003 status |= FDO_MOEN(n); 1004 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1005 fdc->sc_reg_dor, status); 1006 } else { 1007 1008 for (n = 0; n < 4; n++) { 1009 if ((fd = fdc->sc_fd[n]) != NULL && 1010 (fd->sc_flags & FD_MOTOR) != 0) { 1011 auxregbisc(AUXIO4C_FDS, 0); 1012 return; 1013 } 1014 } 1015 auxregbisc(0, AUXIO4C_FDS); 1016 } 1017 } 1018 1019 void 1020 fd_motor_off(arg) 1021 void *arg; 1022 { 1023 struct fd_softc *fd = arg; 1024 int s; 1025 1026 s = splbio(); 1027 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1028 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 1029 splx(s); 1030 } 1031 1032 void 1033 fd_motor_on(arg) 1034 void *arg; 1035 { 1036 struct fd_softc *fd = arg; 1037 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1038 int s; 1039 1040 s = splbio(); 1041 fd->sc_flags &= ~FD_MOTOR_WAIT; 1042 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1043 (void) fdcstate(fdc); 1044 splx(s); 1045 } 1046 1047 /* 1048 * Get status bytes off the FDC after a command has finished 1049 * Returns the number of status bytes read; -1 on error. 1050 * The return value is also stored in `sc_nstat'. 1051 */ 1052 int 1053 fdcresult(fdc) 1054 struct fdc_softc *fdc; 1055 { 1056 bus_space_tag_t t = fdc->sc_bustag; 1057 bus_space_handle_t h = fdc->sc_handle; 1058 int j, n = 0; 1059 1060 for (j = 10000; j; j--) { 1061 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1062 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1063 if (v == NE7_RQM) 1064 return (fdc->sc_nstat = n); 1065 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1066 if (n >= sizeof(fdc->sc_status)) { 1067 log(LOG_ERR, "fdcresult: overrun\n"); 1068 return (-1); 1069 } 1070 fdc->sc_status[n++] = 1071 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1072 } else 1073 delay(1); 1074 } 1075 1076 log(LOG_ERR, "fdcresult: timeout\n"); 1077 return (fdc->sc_nstat = -1); 1078 } 1079 1080 /* 1081 * Write a command byte to the FDC. 1082 * Returns 0 on success; -1 on failure (i.e. timeout) 1083 */ 1084 int 1085 fdc_wrfifo(fdc, x) 1086 struct fdc_softc *fdc; 1087 u_int8_t x; 1088 { 1089 bus_space_tag_t t = fdc->sc_bustag; 1090 bus_space_handle_t h = fdc->sc_handle; 1091 int i; 1092 1093 for (i = 100000; i-- > 0;) { 1094 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1095 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1096 /* The chip is ready */ 1097 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1098 return (0); 1099 } 1100 delay(1); 1101 } 1102 return (-1); 1103 } 1104 1105 int 1106 fdc_diskchange(fdc) 1107 struct fdc_softc *fdc; 1108 { 1109 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1110 bus_space_tag_t t = fdc->sc_bustag; 1111 bus_space_handle_t h = fdc->sc_handle; 1112 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1113 return ((v & FDI_DCHG) != 0); 1114 } else if (CPU_ISSUN4C) { 1115 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1116 } 1117 return (0); 1118 } 1119 1120 int 1121 fdopen(dev, flags, fmt, p) 1122 dev_t dev; 1123 int flags, fmt; 1124 struct proc *p; 1125 { 1126 int unit, pmask; 1127 struct fd_softc *fd; 1128 struct fd_type *type; 1129 1130 unit = FDUNIT(dev); 1131 if (unit >= fd_cd.cd_ndevs) 1132 return (ENXIO); 1133 fd = fd_cd.cd_devs[unit]; 1134 if (fd == NULL) 1135 return (ENXIO); 1136 type = fd_dev_to_type(fd, dev); 1137 if (type == NULL) 1138 return (ENXIO); 1139 1140 if ((fd->sc_flags & FD_OPEN) != 0 && 1141 fd->sc_type != type) 1142 return (EBUSY); 1143 1144 fd->sc_type = type; 1145 fd->sc_cylin = -1; 1146 fd->sc_flags |= FD_OPEN; 1147 1148 /* 1149 * Only update the disklabel if we're not open anywhere else. 1150 */ 1151 if (fd->sc_dk.dk_openmask == 0) 1152 fdgetdisklabel(dev); 1153 1154 pmask = (1 << DISKPART(dev)); 1155 1156 switch (fmt) { 1157 case S_IFCHR: 1158 fd->sc_dk.dk_copenmask |= pmask; 1159 break; 1160 1161 case S_IFBLK: 1162 fd->sc_dk.dk_bopenmask |= pmask; 1163 break; 1164 } 1165 fd->sc_dk.dk_openmask = 1166 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1167 1168 return (0); 1169 } 1170 1171 int 1172 fdclose(dev, flags, fmt, p) 1173 dev_t dev; 1174 int flags, fmt; 1175 struct proc *p; 1176 { 1177 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1178 int pmask = (1 << DISKPART(dev)); 1179 1180 fd->sc_flags &= ~FD_OPEN; 1181 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1182 1183 switch (fmt) { 1184 case S_IFCHR: 1185 fd->sc_dk.dk_copenmask &= ~pmask; 1186 break; 1187 1188 case S_IFBLK: 1189 fd->sc_dk.dk_bopenmask &= ~pmask; 1190 break; 1191 } 1192 fd->sc_dk.dk_openmask = 1193 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1194 1195 return (0); 1196 } 1197 1198 int 1199 fdread(dev, uio, flag) 1200 dev_t dev; 1201 struct uio *uio; 1202 int flag; 1203 { 1204 1205 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1206 } 1207 1208 int 1209 fdwrite(dev, uio, flag) 1210 dev_t dev; 1211 struct uio *uio; 1212 int flag; 1213 { 1214 1215 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1216 } 1217 1218 void 1219 fdcstart(fdc) 1220 struct fdc_softc *fdc; 1221 { 1222 1223 #ifdef DIAGNOSTIC 1224 /* only got here if controller's drive queue was inactive; should 1225 be in idle state */ 1226 if (fdc->sc_state != DEVIDLE) { 1227 printf("fdcstart: not idle\n"); 1228 return; 1229 } 1230 #endif 1231 (void) fdcstate(fdc); 1232 } 1233 1234 void 1235 fdcstatus(fdc, s) 1236 struct fdc_softc *fdc; 1237 char *s; 1238 { 1239 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1240 int n; 1241 char bits[64]; 1242 1243 /* Just print last status */ 1244 n = fdc->sc_nstat; 1245 1246 #if 0 1247 /* 1248 * A 82072 seems to return <invalid command> on 1249 * gratuitous Sense Interrupt commands. 1250 */ 1251 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1252 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1253 (void) fdcresult(fdc); 1254 n = 2; 1255 } 1256 #endif 1257 1258 printf("%s: %s: state %d", 1259 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1260 1261 switch (n) { 1262 case 0: 1263 printf("\n"); 1264 break; 1265 case 2: 1266 printf(" (st0 %s cyl %d)\n", 1267 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1268 bits, sizeof(bits)), fdc->sc_status[1]); 1269 break; 1270 case 7: 1271 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1272 NE7_ST0BITS, bits, sizeof(bits))); 1273 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1274 NE7_ST1BITS, bits, sizeof(bits))); 1275 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1276 NE7_ST2BITS, bits, sizeof(bits))); 1277 printf(" cyl %d head %d sec %d)\n", 1278 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1279 break; 1280 #ifdef DIAGNOSTIC 1281 default: 1282 printf(" fdcstatus: weird size: %d\n", n); 1283 break; 1284 #endif 1285 } 1286 } 1287 1288 void 1289 fdctimeout(arg) 1290 void *arg; 1291 { 1292 struct fdc_softc *fdc = arg; 1293 struct fd_softc *fd; 1294 int s; 1295 1296 s = splbio(); 1297 fd = fdc->sc_drives.tqh_first; 1298 if (fd == NULL) { 1299 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1300 fdc->sc_dev.dv_xname, 1301 fdc->sc_state, fdc->sc_istatus); 1302 fdc->sc_state = DEVIDLE; 1303 goto out; 1304 } 1305 1306 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1307 fdc->sc_state++; 1308 else 1309 fdc->sc_state = DEVIDLE; 1310 1311 (void) fdcstate(fdc); 1312 out: 1313 splx(s); 1314 1315 } 1316 1317 void 1318 fdcpseudointr(arg) 1319 void *arg; 1320 { 1321 struct fdc_softc *fdc = arg; 1322 int s; 1323 1324 /* Just ensure it has the right spl. */ 1325 s = splbio(); 1326 (void) fdcstate(fdc); 1327 splx(s); 1328 } 1329 1330 1331 /* 1332 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1333 * handler is available. Unfortunately, we have no reliable way to 1334 * determine that the interrupt really came from the floppy controller; 1335 * just hope that the other devices that share this interrupt level 1336 * can do better.. 1337 */ 1338 int 1339 fdc_c_hwintr(arg) 1340 void *arg; 1341 { 1342 struct fdc_softc *fdc = arg; 1343 bus_space_tag_t t = fdc->sc_bustag; 1344 bus_space_handle_t h = fdc->sc_handle; 1345 1346 switch (fdc->sc_itask) { 1347 case FDC_ITASK_NONE: 1348 return (0); 1349 case FDC_ITASK_SENSEI: 1350 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1351 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1352 else 1353 fdc->sc_istatus = FDC_ISTATUS_DONE; 1354 softintr_schedule(fdc->sc_sicookie); 1355 return (1); 1356 case FDC_ITASK_RESULT: 1357 if (fdcresult(fdc) == -1) 1358 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1359 else 1360 fdc->sc_istatus = FDC_ISTATUS_DONE; 1361 softintr_schedule(fdc->sc_sicookie); 1362 return (1); 1363 case FDC_ITASK_DMA: 1364 /* Proceed with pseudo-DMA below */ 1365 break; 1366 default: 1367 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1368 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1369 softintr_schedule(fdc->sc_sicookie); 1370 return (1); 1371 } 1372 1373 /* 1374 * Pseudo DMA in progress 1375 */ 1376 for (;;) { 1377 u_int8_t msr; 1378 1379 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1380 1381 if ((msr & NE7_RQM) == 0) 1382 /* That's all this round */ 1383 break; 1384 1385 if ((msr & NE7_NDM) == 0) { 1386 fdcresult(fdc); 1387 fdc->sc_istatus = FDC_ISTATUS_DONE; 1388 softintr_schedule(fdc->sc_sicookie); 1389 #ifdef FD_DEBUG 1390 if (fdc_debug > 1) 1391 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1392 #endif 1393 break; 1394 } 1395 1396 /* Another byte can be transferred */ 1397 if ((msr & NE7_DIO) != 0) 1398 *fdc->sc_data = 1399 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1400 else 1401 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1402 *fdc->sc_data); 1403 1404 fdc->sc_data++; 1405 if (--fdc->sc_tc == 0) { 1406 fdc->sc_istatus = FDC_ISTATUS_DONE; 1407 FTC_FLIP; 1408 fdcresult(fdc); 1409 softintr_schedule(fdc->sc_sicookie); 1410 break; 1411 } 1412 } 1413 return (1); 1414 } 1415 1416 void 1417 fdcswintr(arg) 1418 void *arg; 1419 { 1420 struct fdc_softc *fdc = arg; 1421 1422 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1423 /* This (software) interrupt is not for us */ 1424 return; 1425 1426 switch (fdc->sc_istatus) { 1427 case FDC_ISTATUS_ERROR: 1428 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1429 break; 1430 case FDC_ISTATUS_SPURIOUS: 1431 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1432 break; 1433 } 1434 1435 fdcstate(fdc); 1436 return; 1437 } 1438 1439 int 1440 fdcstate(fdc) 1441 struct fdc_softc *fdc; 1442 { 1443 #define st0 fdc->sc_status[0] 1444 #define st1 fdc->sc_status[1] 1445 #define cyl fdc->sc_status[1] 1446 #define FDC_WRFIFO(fdc, c) do { \ 1447 if (fdc_wrfifo(fdc, (c))) { \ 1448 goto xxx; \ 1449 } \ 1450 } while(0) 1451 1452 struct fd_softc *fd; 1453 struct buf *bp; 1454 int read, head, sec, nblks; 1455 struct fd_type *type; 1456 struct ne7_fd_formb *finfo = NULL; 1457 1458 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1459 /* Prevent loop if the reset sequence produces errors */ 1460 if (fdc->sc_state != RESETCOMPLETE && 1461 fdc->sc_state != RECALWAIT && 1462 fdc->sc_state != RECALCOMPLETE) 1463 fdc->sc_state = DORESET; 1464 } 1465 1466 /* Clear I task/status field */ 1467 fdc->sc_istatus = FDC_ISTATUS_NONE; 1468 fdc->sc_itask = FDC_ITASK_NONE; 1469 1470 loop: 1471 /* Is there a drive for the controller to do a transfer with? */ 1472 fd = fdc->sc_drives.tqh_first; 1473 if (fd == NULL) { 1474 fdc->sc_state = DEVIDLE; 1475 return (0); 1476 } 1477 1478 /* Is there a transfer to this drive? If not, deactivate drive. */ 1479 bp = BUFQ_PEEK(&fd->sc_q); 1480 if (bp == NULL) { 1481 fd->sc_ops = 0; 1482 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1483 fd->sc_active = 0; 1484 goto loop; 1485 } 1486 1487 if (bp->b_flags & B_FORMAT) 1488 finfo = (struct ne7_fd_formb *)bp->b_data; 1489 1490 switch (fdc->sc_state) { 1491 case DEVIDLE: 1492 fdc->sc_errors = 0; 1493 fd->sc_skip = 0; 1494 fd->sc_bcount = bp->b_bcount; 1495 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1496 callout_stop(&fd->sc_motoroff_ch); 1497 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1498 fdc->sc_state = MOTORWAIT; 1499 return (1); 1500 } 1501 if ((fd->sc_flags & FD_MOTOR) == 0) { 1502 /* Turn on the motor, being careful about pairing. */ 1503 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1504 if (ofd && ofd->sc_flags & FD_MOTOR) { 1505 callout_stop(&ofd->sc_motoroff_ch); 1506 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1507 } 1508 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1509 fd_set_motor(fdc); 1510 fdc->sc_state = MOTORWAIT; 1511 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1512 /* Allow .25s for motor to stabilize. */ 1513 callout_reset(&fd->sc_motoron_ch, hz / 4, 1514 fd_motor_on, fd); 1515 } else { 1516 fd->sc_flags &= ~FD_MOTOR_WAIT; 1517 goto loop; 1518 } 1519 return (1); 1520 } 1521 /* Make sure the right drive is selected. */ 1522 fd_set_motor(fdc); 1523 1524 if (fdc_diskchange(fdc)) 1525 goto dodskchg; 1526 1527 /*FALLTHROUGH*/ 1528 case DOSEEK: 1529 doseek: 1530 if ((fdc->sc_flags & FDC_EIS) && 1531 (bp->b_flags & B_FORMAT) == 0) { 1532 fd->sc_cylin = bp->b_cylinder; 1533 /* We use implied seek */ 1534 goto doio; 1535 } 1536 1537 if (fd->sc_cylin == bp->b_cylinder) 1538 goto doio; 1539 1540 fd->sc_cylin = -1; 1541 fdc->sc_state = SEEKWAIT; 1542 fdc->sc_nstat = 0; 1543 1544 fd->sc_dk.dk_seek++; 1545 1546 disk_busy(&fd->sc_dk); 1547 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1548 1549 /* specify command */ 1550 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1551 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1552 /* XXX head load time == 6ms */ 1553 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1554 1555 fdc->sc_itask = FDC_ITASK_SENSEI; 1556 /* seek function */ 1557 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1558 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1559 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1560 return (1); 1561 1562 case DODSKCHG: 1563 dodskchg: 1564 /* 1565 * Disk change: force a seek operation by going to cyl 1 1566 * followed by a recalibrate. 1567 */ 1568 disk_busy(&fd->sc_dk); 1569 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1570 fd->sc_cylin = -1; 1571 fdc->sc_nstat = 0; 1572 fdc->sc_state = DSKCHGWAIT; 1573 1574 fdc->sc_itask = FDC_ITASK_SENSEI; 1575 /* seek function */ 1576 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1577 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1578 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1579 return (1); 1580 1581 case DSKCHGWAIT: 1582 callout_stop(&fdc->sc_timo_ch); 1583 disk_unbusy(&fd->sc_dk, 0, 0); 1584 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1585 cyl != 1 * fd->sc_type->step) { 1586 fdcstatus(fdc, "dskchg seek failed"); 1587 fdc->sc_state = DORESET; 1588 } else 1589 fdc->sc_state = DORECAL; 1590 1591 if (fdc_diskchange(fdc)) { 1592 printf("%s: cannot clear disk change status\n", 1593 fdc->sc_dev.dv_xname); 1594 fdc->sc_state = DORESET; 1595 } 1596 goto loop; 1597 1598 case DOIO: 1599 doio: 1600 if (finfo != NULL) 1601 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1602 (char *)finfo; 1603 type = fd->sc_type; 1604 sec = fd->sc_blkno % type->seccyl; 1605 nblks = type->seccyl - sec; 1606 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1607 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1608 fd->sc_nblks = nblks; 1609 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1610 head = sec / type->sectrac; 1611 sec -= head * type->sectrac; 1612 #ifdef DIAGNOSTIC 1613 {int block; 1614 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1615 if (block != fd->sc_blkno) { 1616 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1617 #ifdef DDB 1618 Debugger(); 1619 #endif 1620 }} 1621 #endif 1622 read = bp->b_flags & B_READ; 1623 1624 /* Setup for pseudo DMA */ 1625 fdc->sc_data = bp->b_data + fd->sc_skip; 1626 fdc->sc_tc = fd->sc_nbytes; 1627 1628 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1629 fdc->sc_reg_drs, type->rate); 1630 #ifdef FD_DEBUG 1631 if (fdc_debug > 1) 1632 printf("fdcstate: doio: %s drive %d " 1633 "track %d head %d sec %d nblks %d\n", 1634 finfo ? "format" : 1635 (read ? "read" : "write"), 1636 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1637 #endif 1638 fdc->sc_state = IOCOMPLETE; 1639 fdc->sc_itask = FDC_ITASK_DMA; 1640 fdc->sc_nstat = 0; 1641 1642 disk_busy(&fd->sc_dk); 1643 1644 /* allow 3 seconds for operation */ 1645 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1646 1647 if (finfo != NULL) { 1648 /* formatting */ 1649 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1650 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1651 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1652 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1653 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1654 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1655 } else { 1656 if (read) 1657 FDC_WRFIFO(fdc, NE7CMD_READ); 1658 else 1659 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1660 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1661 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1662 FDC_WRFIFO(fdc, head); 1663 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1664 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1665 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1666 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1667 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1668 } 1669 1670 return (1); /* will return later */ 1671 1672 case SEEKWAIT: 1673 callout_stop(&fdc->sc_timo_ch); 1674 fdc->sc_state = SEEKCOMPLETE; 1675 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1676 /* allow 1/50 second for heads to settle */ 1677 callout_reset(&fdc->sc_intr_ch, hz / 50, 1678 fdcpseudointr, fdc); 1679 return (1); /* will return later */ 1680 } 1681 /*FALLTHROUGH*/ 1682 case SEEKCOMPLETE: 1683 /* no data on seek */ 1684 disk_unbusy(&fd->sc_dk, 0, 0); 1685 1686 /* Make sure seek really happened. */ 1687 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1688 cyl != bp->b_cylinder * fd->sc_type->step) { 1689 #ifdef FD_DEBUG 1690 if (fdc_debug) 1691 fdcstatus(fdc, "seek failed"); 1692 #endif 1693 fdcretry(fdc); 1694 goto loop; 1695 } 1696 fd->sc_cylin = bp->b_cylinder; 1697 goto doio; 1698 1699 case IOTIMEDOUT: 1700 /* 1701 * Try to abort the I/O operation without resetting 1702 * the chip first. Poke TC and arrange to pick up 1703 * the timed out I/O command's status. 1704 */ 1705 fdc->sc_itask = FDC_ITASK_RESULT; 1706 fdc->sc_state = IOCLEANUPWAIT; 1707 fdc->sc_nstat = 0; 1708 /* 1/10 second should be enough */ 1709 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1710 FTC_FLIP; 1711 return (1); 1712 1713 case IOCLEANUPTIMEDOUT: 1714 case SEEKTIMEDOUT: 1715 case RECALTIMEDOUT: 1716 case RESETTIMEDOUT: 1717 case DSKCHGTIMEDOUT: 1718 fdcstatus(fdc, "timeout"); 1719 1720 /* All other timeouts always roll through to a chip reset */ 1721 fdcretry(fdc); 1722 1723 /* Force reset, no matter what fdcretry() says */ 1724 fdc->sc_state = DORESET; 1725 goto loop; 1726 1727 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1728 callout_stop(&fdc->sc_timo_ch); 1729 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1730 (bp->b_flags & B_READ)); 1731 fdcretry(fdc); 1732 goto loop; 1733 1734 case IOCOMPLETE: /* IO DONE, post-analyze */ 1735 callout_stop(&fdc->sc_timo_ch); 1736 1737 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1738 (bp->b_flags & B_READ)); 1739 1740 if (fdc->sc_nstat != 7 || st1 != 0 || 1741 ((st0 & 0xf8) != 0 && 1742 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1743 #ifdef FD_DEBUG 1744 if (fdc_debug) { 1745 fdcstatus(fdc, 1746 bp->b_flags & B_READ 1747 ? "read failed" : "write failed"); 1748 printf("blkno %lld nblks %d nstat %d tc %d\n", 1749 (long long)fd->sc_blkno, fd->sc_nblks, 1750 fdc->sc_nstat, fdc->sc_tc); 1751 } 1752 #endif 1753 if (fdc->sc_nstat == 7 && 1754 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1755 1756 /* 1757 * Silently retry overruns if no other 1758 * error bit is set. Adjust threshold. 1759 */ 1760 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1761 if (thr < 15) { 1762 thr++; 1763 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1764 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1765 #ifdef FD_DEBUG 1766 if (fdc_debug) 1767 printf("fdc: %d -> threshold\n", thr); 1768 #endif 1769 fdconf(fdc); 1770 fdc->sc_overruns = 0; 1771 } 1772 if (++fdc->sc_overruns < 3) { 1773 fdc->sc_state = DOIO; 1774 goto loop; 1775 } 1776 } 1777 fdcretry(fdc); 1778 goto loop; 1779 } 1780 if (fdc->sc_errors) { 1781 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1782 fd->sc_skip / FD_BSIZE(fd), 1783 (struct disklabel *)NULL); 1784 printf("\n"); 1785 fdc->sc_errors = 0; 1786 } else { 1787 if (--fdc->sc_overruns < -20) { 1788 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1789 if (thr > 0) { 1790 thr--; 1791 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1792 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1793 #ifdef FD_DEBUG 1794 if (fdc_debug) 1795 printf("fdc: %d -> threshold\n", thr); 1796 #endif 1797 fdconf(fdc); 1798 } 1799 fdc->sc_overruns = 0; 1800 } 1801 } 1802 fd->sc_blkno += fd->sc_nblks; 1803 fd->sc_skip += fd->sc_nbytes; 1804 fd->sc_bcount -= fd->sc_nbytes; 1805 if (finfo == NULL && fd->sc_bcount > 0) { 1806 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1807 goto doseek; 1808 } 1809 fdfinish(fd, bp); 1810 goto loop; 1811 1812 case DORESET: 1813 /* try a reset, keep motor on */ 1814 fd_set_motor(fdc); 1815 delay(100); 1816 fdc->sc_nstat = 0; 1817 fdc->sc_itask = FDC_ITASK_SENSEI; 1818 fdc->sc_state = RESETCOMPLETE; 1819 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1820 fdc_reset(fdc); 1821 return (1); /* will return later */ 1822 1823 case RESETCOMPLETE: 1824 callout_stop(&fdc->sc_timo_ch); 1825 fdconf(fdc); 1826 1827 /* FALLTHROUGH */ 1828 case DORECAL: 1829 fdc->sc_state = RECALWAIT; 1830 fdc->sc_itask = FDC_ITASK_SENSEI; 1831 fdc->sc_nstat = 0; 1832 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1833 /* recalibrate function */ 1834 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1835 FDC_WRFIFO(fdc, fd->sc_drive); 1836 return (1); /* will return later */ 1837 1838 case RECALWAIT: 1839 callout_stop(&fdc->sc_timo_ch); 1840 fdc->sc_state = RECALCOMPLETE; 1841 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1842 /* allow 1/30 second for heads to settle */ 1843 callout_reset(&fdc->sc_intr_ch, hz / 30, 1844 fdcpseudointr, fdc); 1845 return (1); /* will return later */ 1846 } 1847 1848 case RECALCOMPLETE: 1849 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1850 #ifdef FD_DEBUG 1851 if (fdc_debug) 1852 fdcstatus(fdc, "recalibrate failed"); 1853 #endif 1854 fdcretry(fdc); 1855 goto loop; 1856 } 1857 fd->sc_cylin = 0; 1858 goto doseek; 1859 1860 case MOTORWAIT: 1861 if (fd->sc_flags & FD_MOTOR_WAIT) 1862 return (1); /* time's not up yet */ 1863 goto doseek; 1864 1865 default: 1866 fdcstatus(fdc, "stray interrupt"); 1867 return (1); 1868 } 1869 #ifdef DIAGNOSTIC 1870 panic("fdcintr: impossible"); 1871 #endif 1872 1873 xxx: 1874 /* 1875 * We get here if the chip locks up in FDC_WRFIFO() 1876 * Cancel any operation and schedule a reset 1877 */ 1878 callout_stop(&fdc->sc_timo_ch); 1879 fdcretry(fdc); 1880 (fdc)->sc_state = DORESET; 1881 goto loop; 1882 1883 #undef st0 1884 #undef st1 1885 #undef cyl 1886 } 1887 1888 void 1889 fdcretry(fdc) 1890 struct fdc_softc *fdc; 1891 { 1892 struct fd_softc *fd; 1893 struct buf *bp; 1894 int error = EIO; 1895 1896 fd = fdc->sc_drives.tqh_first; 1897 bp = BUFQ_PEEK(&fd->sc_q); 1898 1899 fdc->sc_overruns = 0; 1900 if (fd->sc_opts & FDOPT_NORETRY) 1901 goto fail; 1902 1903 switch (fdc->sc_errors) { 1904 case 0: 1905 if (fdc->sc_nstat == 7 && 1906 (fdc->sc_status[0] & 0xd8) == 0x40 && 1907 (fdc->sc_status[1] & 0x2) == 0x2) { 1908 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1909 error = EROFS; 1910 goto failsilent; 1911 } 1912 /* try again */ 1913 fdc->sc_state = 1914 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1915 break; 1916 1917 case 1: case 2: case 3: 1918 /* didn't work; try recalibrating */ 1919 fdc->sc_state = DORECAL; 1920 break; 1921 1922 case 4: 1923 if (fdc->sc_nstat == 7 && 1924 fdc->sc_status[0] == 0 && 1925 fdc->sc_status[1] == 0 && 1926 fdc->sc_status[2] == 0) { 1927 /* 1928 * We've retried a few times and we've got 1929 * valid status and all three status bytes 1930 * are zero. Assume this condition is the 1931 * result of no disk loaded into the drive. 1932 */ 1933 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1934 error = ENODEV; 1935 goto failsilent; 1936 } 1937 1938 /* still no go; reset the bastard */ 1939 fdc->sc_state = DORESET; 1940 break; 1941 1942 default: 1943 fail: 1944 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1945 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1946 fd->sc_skip / FD_BSIZE(fd), 1947 (struct disklabel *)NULL); 1948 printf("\n"); 1949 fdcstatus(fdc, "controller status"); 1950 } 1951 1952 failsilent: 1953 bp->b_flags |= B_ERROR; 1954 bp->b_error = error; 1955 fdfinish(fd, bp); 1956 } 1957 fdc->sc_errors++; 1958 } 1959 1960 int 1961 fdioctl(dev, cmd, addr, flag, p) 1962 dev_t dev; 1963 u_long cmd; 1964 caddr_t addr; 1965 int flag; 1966 struct proc *p; 1967 { 1968 struct fd_softc *fd; 1969 struct fdc_softc *fdc; 1970 struct fdformat_parms *form_parms; 1971 struct fdformat_cmd *form_cmd; 1972 struct ne7_fd_formb *fd_formb; 1973 int il[FD_MAX_NSEC + 1]; 1974 int unit; 1975 int i, j; 1976 int error; 1977 1978 unit = FDUNIT(dev); 1979 if (unit >= fd_cd.cd_ndevs) 1980 return (ENXIO); 1981 1982 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1983 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1984 1985 switch (cmd) { 1986 case DIOCGDINFO: 1987 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1988 return 0; 1989 1990 case DIOCWLABEL: 1991 if ((flag & FWRITE) == 0) 1992 return EBADF; 1993 /* XXX do something */ 1994 return (0); 1995 1996 case DIOCWDINFO: 1997 if ((flag & FWRITE) == 0) 1998 return (EBADF); 1999 2000 error = setdisklabel(fd->sc_dk.dk_label, 2001 (struct disklabel *)addr, 0, 2002 fd->sc_dk.dk_cpulabel); 2003 if (error) 2004 return (error); 2005 2006 error = writedisklabel(dev, fdstrategy, 2007 fd->sc_dk.dk_label, 2008 fd->sc_dk.dk_cpulabel); 2009 return (error); 2010 2011 case DIOCLOCK: 2012 /* 2013 * Nothing to do here, really. 2014 */ 2015 return (0); 2016 2017 case DIOCEJECT: 2018 if (*(int *)addr == 0) { 2019 int part = DISKPART(dev); 2020 /* 2021 * Don't force eject: check that we are the only 2022 * partition open. If so, unlock it. 2023 */ 2024 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2025 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2026 fd->sc_dk.dk_openmask) { 2027 return (EBUSY); 2028 } 2029 } 2030 /* FALLTHROUGH */ 2031 case ODIOCEJECT: 2032 fd_do_eject(fd); 2033 return (0); 2034 2035 case FDIOCGETFORMAT: 2036 form_parms = (struct fdformat_parms *)addr; 2037 form_parms->fdformat_version = FDFORMAT_VERSION; 2038 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2039 form_parms->ncyl = fd->sc_type->cylinders; 2040 form_parms->nspt = fd->sc_type->sectrac; 2041 form_parms->ntrk = fd->sc_type->heads; 2042 form_parms->stepspercyl = fd->sc_type->step; 2043 form_parms->gaplen = fd->sc_type->gap2; 2044 form_parms->fillbyte = fd->sc_type->fillbyte; 2045 form_parms->interleave = fd->sc_type->interleave; 2046 switch (fd->sc_type->rate) { 2047 case FDC_500KBPS: 2048 form_parms->xfer_rate = 500 * 1024; 2049 break; 2050 case FDC_300KBPS: 2051 form_parms->xfer_rate = 300 * 1024; 2052 break; 2053 case FDC_250KBPS: 2054 form_parms->xfer_rate = 250 * 1024; 2055 break; 2056 default: 2057 return (EINVAL); 2058 } 2059 return (0); 2060 2061 case FDIOCSETFORMAT: 2062 if ((flag & FWRITE) == 0) 2063 return (EBADF); /* must be opened for writing */ 2064 2065 form_parms = (struct fdformat_parms *)addr; 2066 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2067 return (EINVAL);/* wrong version of formatting prog */ 2068 2069 i = form_parms->nbps >> 7; 2070 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2071 i & ~(1 << (ffs(i)-1))) 2072 /* not a power-of-two multiple of 128 */ 2073 return (EINVAL); 2074 2075 switch (form_parms->xfer_rate) { 2076 case 500 * 1024: 2077 fd->sc_type->rate = FDC_500KBPS; 2078 break; 2079 case 300 * 1024: 2080 fd->sc_type->rate = FDC_300KBPS; 2081 break; 2082 case 250 * 1024: 2083 fd->sc_type->rate = FDC_250KBPS; 2084 break; 2085 default: 2086 return (EINVAL); 2087 } 2088 2089 if (form_parms->nspt > FD_MAX_NSEC || 2090 form_parms->fillbyte > 0xff || 2091 form_parms->interleave > 0xff) 2092 return EINVAL; 2093 fd->sc_type->sectrac = form_parms->nspt; 2094 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2095 return EINVAL; 2096 fd->sc_type->heads = form_parms->ntrk; 2097 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2098 fd->sc_type->secsize = ffs(i)-1; 2099 fd->sc_type->gap2 = form_parms->gaplen; 2100 fd->sc_type->cylinders = form_parms->ncyl; 2101 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2102 form_parms->nbps / DEV_BSIZE; 2103 fd->sc_type->step = form_parms->stepspercyl; 2104 fd->sc_type->fillbyte = form_parms->fillbyte; 2105 fd->sc_type->interleave = form_parms->interleave; 2106 return (0); 2107 2108 case FDIOCFORMAT_TRACK: 2109 if((flag & FWRITE) == 0) 2110 /* must be opened for writing */ 2111 return (EBADF); 2112 form_cmd = (struct fdformat_cmd *)addr; 2113 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2114 /* wrong version of formatting prog */ 2115 return (EINVAL); 2116 2117 if (form_cmd->head >= fd->sc_type->heads || 2118 form_cmd->cylinder >= fd->sc_type->cylinders) { 2119 return (EINVAL); 2120 } 2121 2122 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2123 M_TEMP, M_NOWAIT); 2124 if (fd_formb == 0) 2125 return (ENOMEM); 2126 2127 fd_formb->head = form_cmd->head; 2128 fd_formb->cyl = form_cmd->cylinder; 2129 fd_formb->transfer_rate = fd->sc_type->rate; 2130 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2131 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2132 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2133 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2134 2135 bzero(il, sizeof il); 2136 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2137 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2138 j++; 2139 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2140 j += fd->sc_type->interleave; 2141 } 2142 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2143 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2144 fd_formb->fd_formb_headno(i) = form_cmd->head; 2145 fd_formb->fd_formb_secno(i) = il[i+1]; 2146 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2147 } 2148 2149 error = fdformat(dev, fd_formb, p); 2150 free(fd_formb, M_TEMP); 2151 return error; 2152 2153 case FDIOCGETOPTS: /* get drive options */ 2154 *(int *)addr = fd->sc_opts; 2155 return (0); 2156 2157 case FDIOCSETOPTS: /* set drive options */ 2158 fd->sc_opts = *(int *)addr; 2159 return (0); 2160 2161 #ifdef FD_DEBUG 2162 case _IO('f', 100): 2163 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2164 fdcresult(fdc); 2165 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2166 for (i = 0; i < fdc->sc_nstat; i++) 2167 printf(" 0x%x", fdc->sc_status[i]); 2168 printf(">\n"); 2169 return (0); 2170 2171 case _IOW('f', 101, int): 2172 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2173 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2174 fdconf(fdc); 2175 return (0); 2176 2177 case _IO('f', 102): 2178 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2179 fdcresult(fdc); 2180 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2181 for (i=0; i< fdc->sc_nstat; i++) 2182 printf(" 0x%x", fdc->sc_status[i]); 2183 printf(">\n"); 2184 return (0); 2185 #endif 2186 default: 2187 return (ENOTTY); 2188 } 2189 2190 #ifdef DIAGNOSTIC 2191 panic("fdioctl: impossible"); 2192 #endif 2193 } 2194 2195 int 2196 fdformat(dev, finfo, p) 2197 dev_t dev; 2198 struct ne7_fd_formb *finfo; 2199 struct proc *p; 2200 { 2201 int rv = 0, s; 2202 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2203 struct fd_type *type = fd->sc_type; 2204 struct buf *bp; 2205 2206 /* set up a buffer header for fdstrategy() */ 2207 s = splbio(); 2208 bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT); 2209 splx(s); 2210 if (bp == NULL) 2211 return (ENOBUFS); 2212 2213 memset((void *)bp, 0, sizeof(struct buf)); 2214 BUF_INIT(bp); 2215 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2216 bp->b_proc = p; 2217 bp->b_dev = dev; 2218 2219 /* 2220 * Calculate a fake blkno, so fdstrategy() would initiate a 2221 * seek to the requested cylinder. 2222 */ 2223 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2224 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2225 / DEV_BSIZE; 2226 2227 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2228 bp->b_data = (caddr_t)finfo; 2229 2230 #ifdef FD_DEBUG 2231 if (fdc_debug) { 2232 int i; 2233 2234 printf("fdformat: blkno 0x%llx count %d\n", 2235 (unsigned long long)bp->b_blkno, bp->b_bcount); 2236 2237 printf("\tcyl:\t%d\n", finfo->cyl); 2238 printf("\thead:\t%d\n", finfo->head); 2239 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2240 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2241 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2242 printf("\ttrack data:"); 2243 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2244 printf(" [c%d h%d s%d]", 2245 finfo->fd_formb_cylno(i), 2246 finfo->fd_formb_headno(i), 2247 finfo->fd_formb_secno(i) ); 2248 if (finfo->fd_formb_secsize(i) != 2) 2249 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2250 } 2251 printf("\n"); 2252 } 2253 #endif 2254 2255 /* now do the format */ 2256 fdstrategy(bp); 2257 2258 /* ...and wait for it to complete */ 2259 rv = biowait(bp); 2260 s = splbio(); 2261 pool_put(&bufpool, bp); 2262 splx(s); 2263 return (rv); 2264 } 2265 2266 void 2267 fdgetdisklabel(dev) 2268 dev_t dev; 2269 { 2270 int unit = FDUNIT(dev), i; 2271 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2272 struct disklabel *lp = fd->sc_dk.dk_label; 2273 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2274 2275 bzero(lp, sizeof(struct disklabel)); 2276 bzero(lp, sizeof(struct cpu_disklabel)); 2277 2278 lp->d_type = DTYPE_FLOPPY; 2279 lp->d_secsize = FD_BSIZE(fd); 2280 lp->d_secpercyl = fd->sc_type->seccyl; 2281 lp->d_nsectors = fd->sc_type->sectrac; 2282 lp->d_ncylinders = fd->sc_type->cylinders; 2283 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2284 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2285 lp->d_rpm = 3600; /* XXX like it matters... */ 2286 2287 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2288 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2289 lp->d_interleave = 1; 2290 2291 lp->d_partitions[RAW_PART].p_offset = 0; 2292 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2293 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2294 lp->d_npartitions = RAW_PART + 1; 2295 2296 lp->d_magic = DISKMAGIC; 2297 lp->d_magic2 = DISKMAGIC; 2298 lp->d_checksum = dkcksum(lp); 2299 2300 /* 2301 * Call the generic disklabel extraction routine. If there's 2302 * not a label there, fake it. 2303 */ 2304 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2305 strncpy(lp->d_packname, "default label", 2306 sizeof(lp->d_packname)); 2307 /* 2308 * Reset the partition info; it might have gotten 2309 * trashed in readdisklabel(). 2310 * 2311 * XXX Why do we have to do this? readdisklabel() 2312 * should be safe... 2313 */ 2314 for (i = 0; i < MAXPARTITIONS; ++i) { 2315 lp->d_partitions[i].p_offset = 0; 2316 if (i == RAW_PART) { 2317 lp->d_partitions[i].p_size = 2318 lp->d_secpercyl * lp->d_ncylinders; 2319 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2320 } else { 2321 lp->d_partitions[i].p_size = 0; 2322 lp->d_partitions[i].p_fstype = FS_UNUSED; 2323 } 2324 } 2325 lp->d_npartitions = RAW_PART + 1; 2326 } 2327 } 2328 2329 void 2330 fd_do_eject(fd) 2331 struct fd_softc *fd; 2332 { 2333 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2334 2335 if (CPU_ISSUN4C) { 2336 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2337 delay(10); 2338 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2339 return; 2340 } 2341 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2342 bus_space_tag_t t = fdc->sc_bustag; 2343 bus_space_handle_t h = fdc->sc_handle; 2344 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2345 2346 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2347 delay(10); 2348 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2349 return; 2350 } 2351 } 2352 2353 #ifdef MEMORY_DISK_HOOKS 2354 int fd_read_md_image __P((size_t *, caddr_t *)); 2355 #endif 2356 2357 /* ARGSUSED */ 2358 void 2359 fd_mountroot_hook(dev) 2360 struct device *dev; 2361 { 2362 int c; 2363 2364 fd_do_eject((struct fd_softc *)dev); 2365 printf("Insert filesystem floppy and press return."); 2366 for (;;) { 2367 c = cngetc(); 2368 if ((c == '\r') || (c == '\n')) { 2369 printf("\n"); 2370 break; 2371 } 2372 } 2373 } 2374 2375 #ifdef MEMORY_DISK_HOOKS 2376 2377 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2378 2379 int 2380 fd_read_md_image(sizep, addrp) 2381 size_t *sizep; 2382 caddr_t *addrp; 2383 { 2384 struct buf buf, *bp = &buf; 2385 dev_t dev; 2386 off_t offset; 2387 caddr_t addr; 2388 2389 dev = makedev(54,0); /* XXX */ 2390 2391 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2392 *addrp = addr; 2393 2394 if (fdopen(dev, 0, S_IFCHR, NULL)) 2395 panic("fd: mountroot: fdopen"); 2396 2397 offset = 0; 2398 2399 for (;;) { 2400 bp->b_dev = dev; 2401 bp->b_error = 0; 2402 bp->b_resid = 0; 2403 bp->b_proc = NULL; 2404 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2405 bp->b_blkno = btodb(offset); 2406 bp->b_bcount = DEV_BSIZE; 2407 bp->b_data = addr; 2408 fdstrategy(bp); 2409 while ((bp->b_flags & B_DONE) == 0) { 2410 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2411 } 2412 if (bp->b_error) 2413 panic("fd: mountroot: fdread error %d", bp->b_error); 2414 2415 if (bp->b_resid != 0) 2416 break; 2417 2418 addr += DEV_BSIZE; 2419 offset += DEV_BSIZE; 2420 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2421 break; 2422 } 2423 (void)fdclose(dev, 0, S_IFCHR, NULL); 2424 *sizep = offset; 2425 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2426 return (0); 2427 } 2428 #endif 2429
Indexes created Fri Oct 03 02:09:57 GMT 2025