fd.c revision 1.117
1 /* $NetBSD: fd.c,v 1.117 2005/06/04 04:34:12 tsutsui 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 1.117 2005/06/04 04:34:12 tsutsui 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/bufq.h> 128 #include <sys/malloc.h> 129 #include <sys/proc.h> 130 #include <sys/uio.h> 131 #include <sys/stat.h> 132 #include <sys/syslog.h> 133 #include <sys/queue.h> 134 #include <sys/conf.h> 135 136 #include <dev/cons.h> 137 138 #include <uvm/uvm_extern.h> 139 140 #include <machine/autoconf.h> 141 #include <machine/intr.h> 142 143 #include <sparc/sparc/auxreg.h> 144 #include <sparc/dev/fdreg.h> 145 #include <sparc/dev/fdvar.h> 146 147 #define FDUNIT(dev) (minor(dev) / 8) 148 #define FDTYPE(dev) (minor(dev) % 8) 149 150 /* XXX misuse a flag to identify format operation */ 151 #define B_FORMAT B_XXX 152 153 #define FD_DEBUG 154 #ifdef FD_DEBUG 155 int fdc_debug = 0; 156 #endif 157 158 enum fdc_state { 159 DEVIDLE = 0, 160 MOTORWAIT, /* 1 */ 161 DOSEEK, /* 2 */ 162 SEEKWAIT, /* 3 */ 163 SEEKTIMEDOUT, /* 4 */ 164 SEEKCOMPLETE, /* 5 */ 165 DOIO, /* 6 */ 166 IOCOMPLETE, /* 7 */ 167 IOTIMEDOUT, /* 8 */ 168 IOCLEANUPWAIT, /* 9 */ 169 IOCLEANUPTIMEDOUT,/*10 */ 170 DORESET, /* 11 */ 171 RESETCOMPLETE, /* 12 */ 172 RESETTIMEDOUT, /* 13 */ 173 DORECAL, /* 14 */ 174 RECALWAIT, /* 15 */ 175 RECALTIMEDOUT, /* 16 */ 176 RECALCOMPLETE, /* 17 */ 177 DODSKCHG, /* 18 */ 178 DSKCHGWAIT, /* 19 */ 179 DSKCHGTIMEDOUT, /* 20 */ 180 }; 181 182 /* software state, per controller */ 183 struct fdc_softc { 184 struct device sc_dev; /* boilerplate */ 185 bus_space_tag_t sc_bustag; 186 187 struct callout sc_timo_ch; /* timeout callout */ 188 struct callout sc_intr_ch; /* pseudo-intr callout */ 189 190 struct fd_softc *sc_fd[4]; /* pointers to children */ 191 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 192 enum fdc_state sc_state; 193 int sc_flags; 194 #define FDC_82077 0x01 195 #define FDC_NEEDHEADSETTLE 0x02 196 #define FDC_EIS 0x04 197 #define FDC_NEEDMOTORWAIT 0x08 198 int sc_errors; /* number of retries so far */ 199 int sc_overruns; /* number of DMA overruns */ 200 int sc_cfg; /* current configuration */ 201 struct fdcio sc_io; 202 #define sc_handle sc_io.fdcio_handle 203 #define sc_reg_msr sc_io.fdcio_reg_msr 204 #define sc_reg_fifo sc_io.fdcio_reg_fifo 205 #define sc_reg_dor sc_io.fdcio_reg_dor 206 #define sc_reg_dir sc_io.fdcio_reg_dir 207 #define sc_reg_drs sc_io.fdcio_reg_msr 208 #define sc_itask sc_io.fdcio_itask 209 #define sc_istatus sc_io.fdcio_istatus 210 #define sc_data sc_io.fdcio_data 211 #define sc_tc sc_io.fdcio_tc 212 #define sc_nstat sc_io.fdcio_nstat 213 #define sc_status sc_io.fdcio_status 214 #define sc_intrcnt sc_io.fdcio_intrcnt 215 216 void *sc_sicookie; /* softintr(9) cookie */ 217 }; 218 219 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 220 221 /* controller driver configuration */ 222 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 223 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 224 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 225 void fdcattach_obio __P((struct device *, struct device *, void *)); 226 227 int fdcattach __P((struct fdc_softc *, int)); 228 229 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 230 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 231 232 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 233 fdcmatch_obio, fdcattach_obio, NULL, NULL); 234 235 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 236 237 /* 238 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 239 * we tell them apart. 240 */ 241 struct fd_type { 242 int sectrac; /* sectors per track */ 243 int heads; /* number of heads */ 244 int seccyl; /* sectors per cylinder */ 245 int secsize; /* size code for sectors */ 246 int datalen; /* data len when secsize = 0 */ 247 int steprate; /* step rate and head unload time */ 248 int gap1; /* gap len between sectors */ 249 int gap2; /* formatting gap */ 250 int cylinders; /* total num of cylinders */ 251 int size; /* size of disk in sectors */ 252 int step; /* steps per cylinder */ 253 int rate; /* transfer speed code */ 254 int fillbyte; /* format fill byte */ 255 int interleave; /* interleave factor (formatting) */ 256 const char *name; 257 }; 258 259 /* The order of entries in the following table is important -- BEWARE! */ 260 struct fd_type fd_types[] = { 261 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 262 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 263 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 264 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 265 }; 266 267 /* software state, per disk (with up to 4 disks per ctlr) */ 268 struct fd_softc { 269 struct device sc_dv; /* generic device info */ 270 struct disk sc_dk; /* generic disk info */ 271 272 struct fd_type *sc_deftype; /* default type descriptor */ 273 struct fd_type *sc_type; /* current type descriptor */ 274 275 struct callout sc_motoron_ch; 276 struct callout sc_motoroff_ch; 277 278 daddr_t sc_blkno; /* starting block number */ 279 int sc_bcount; /* byte count left */ 280 int sc_skip; /* bytes already transferred */ 281 int sc_nblks; /* number of blocks currently transferring */ 282 int sc_nbytes; /* number of bytes currently transferring */ 283 284 int sc_drive; /* physical unit number */ 285 int sc_flags; 286 #define FD_OPEN 0x01 /* it's open */ 287 #define FD_MOTOR 0x02 /* motor should be on */ 288 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 289 int sc_cylin; /* where we think the head is */ 290 int sc_opts; /* user-set options */ 291 292 void *sc_sdhook; /* shutdownhook cookie */ 293 294 TAILQ_ENTRY(fd_softc) sc_drivechain; 295 int sc_ops; /* I/O ops since last switch */ 296 struct bufq_state sc_q; /* pending I/O requests */ 297 int sc_active; /* number of active I/O requests */ 298 }; 299 300 /* floppy driver configuration */ 301 int fdmatch __P((struct device *, struct cfdata *, void *)); 302 void fdattach __P((struct device *, struct device *, void *)); 303 304 CFATTACH_DECL(fd, sizeof(struct fd_softc), 305 fdmatch, fdattach, NULL, NULL); 306 307 extern struct cfdriver fd_cd; 308 309 dev_type_open(fdopen); 310 dev_type_close(fdclose); 311 dev_type_read(fdread); 312 dev_type_write(fdwrite); 313 dev_type_ioctl(fdioctl); 314 dev_type_strategy(fdstrategy); 315 316 const struct bdevsw fd_bdevsw = { 317 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 318 }; 319 320 const struct cdevsw fd_cdevsw = { 321 fdopen, fdclose, fdread, fdwrite, fdioctl, 322 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 323 }; 324 325 void fdgetdisklabel __P((dev_t)); 326 int fd_get_parms __P((struct fd_softc *)); 327 void fdstart __P((struct fd_softc *)); 328 int fdprint __P((void *, const char *)); 329 330 struct dkdriver fddkdriver = { fdstrategy }; 331 332 struct fd_type *fd_nvtotype __P((char *, int, int)); 333 void fd_set_motor __P((struct fdc_softc *)); 334 void fd_motor_off __P((void *)); 335 void fd_motor_on __P((void *)); 336 int fdcresult __P((struct fdc_softc *)); 337 int fdc_wrfifo __P((struct fdc_softc *, u_char)); 338 void fdcstart __P((struct fdc_softc *)); 339 void fdcstatus __P((struct fdc_softc *, const char *)); 340 void fdc_reset __P((struct fdc_softc *)); 341 int fdc_diskchange __P((struct fdc_softc *)); 342 void fdctimeout __P((void *)); 343 void fdcpseudointr __P((void *)); 344 int fdc_c_hwintr __P((void *)); 345 void fdchwintr __P((void)); 346 void fdcswintr __P((void *)); 347 int fdcstate __P((struct fdc_softc *)); 348 void fdcretry __P((struct fdc_softc *)); 349 void fdfinish __P((struct fd_softc *, struct buf *)); 350 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 351 void fd_do_eject __P((struct fd_softc *)); 352 void fd_mountroot_hook __P((struct device *)); 353 static int fdconf __P((struct fdc_softc *)); 354 static void establish_chip_type __P(( 355 struct fdc_softc *, 356 bus_space_tag_t, 357 bus_addr_t, 358 bus_size_t, 359 bus_space_handle_t)); 360 361 362 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 363 364 int 365 fdcmatch_mainbus(parent, match, aux) 366 struct device *parent; 367 struct cfdata *match; 368 void *aux; 369 { 370 struct mainbus_attach_args *ma = aux; 371 372 /* 373 * Floppy controller is on mainbus on sun4c. 374 */ 375 if (!CPU_ISSUN4C) 376 return (0); 377 378 /* sun4c PROMs call the controller "fd" */ 379 if (strcmp("fd", ma->ma_name) != 0) 380 return (0); 381 382 return (bus_space_probe(ma->ma_bustag, 383 ma->ma_paddr, 384 1, /* probe size */ 385 0, /* offset */ 386 0, /* flags */ 387 NULL, NULL)); 388 } 389 390 int 391 fdcmatch_obio(parent, match, aux) 392 struct device *parent; 393 struct cfdata *match; 394 void *aux; 395 { 396 union obio_attach_args *uoba = aux; 397 struct sbus_attach_args *sa; 398 399 /* 400 * Floppy controller is on obio on sun4m. 401 */ 402 if (uoba->uoba_isobio4 != 0) 403 return (0); 404 405 sa = &uoba->uoba_sbus; 406 407 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 408 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 409 return (0); 410 411 return (bus_space_probe(sa->sa_bustag, 412 sbus_bus_addr(sa->sa_bustag, 413 sa->sa_slot, sa->sa_offset), 414 1, /* probe size */ 415 0, /* offset */ 416 0, /* flags */ 417 NULL, NULL)); 418 } 419 420 static void 421 establish_chip_type(fdc, tag, addr, size, handle) 422 struct fdc_softc *fdc; 423 bus_space_tag_t tag; 424 bus_addr_t addr; 425 bus_size_t size; 426 bus_space_handle_t handle; 427 { 428 u_int8_t v; 429 430 /* 431 * This hack from Chris Torek: apparently DOR really 432 * addresses MSR/DRS on a 82072. 433 * We used to rely on the VERSION command to tell the 434 * difference (which did not work). 435 */ 436 437 /* First, check the size of the register bank */ 438 if (size < 8) 439 /* It isn't a 82077 */ 440 return; 441 442 /* Then probe the DOR register offset */ 443 if (bus_space_probe(tag, addr, 444 1, /* probe size */ 445 FDREG77_DOR, /* offset */ 446 0, /* flags */ 447 NULL, NULL) == 0) { 448 449 /* It isn't a 82077 */ 450 return; 451 } 452 453 v = bus_space_read_1(tag, handle, FDREG77_DOR); 454 if (v == NE7_RQM) { 455 /* 456 * Value in DOR looks like it's really MSR 457 */ 458 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 459 v = bus_space_read_1(tag, handle, FDREG77_DOR); 460 if (v == NE7_RQM) { 461 /* 462 * The value in the DOR didn't stick; 463 * it isn't a 82077 464 */ 465 return; 466 } 467 } 468 469 fdc->sc_flags |= FDC_82077; 470 } 471 472 /* 473 * Arguments passed between fdcattach and fdprobe. 474 */ 475 struct fdc_attach_args { 476 int fa_drive; 477 struct fd_type *fa_deftype; 478 }; 479 480 /* 481 * Print the location of a disk drive (called just before attaching the 482 * the drive). If `fdc' is not NULL, the drive was found but was not 483 * in the system config file; print the drive name as well. 484 * Return QUIET (config_find ignores this if the device was configured) to 485 * avoid printing `fdN not configured' messages. 486 */ 487 int 488 fdprint(aux, fdc) 489 void *aux; 490 const char *fdc; 491 { 492 register struct fdc_attach_args *fa = aux; 493 494 if (!fdc) 495 aprint_normal(" drive %d", fa->fa_drive); 496 return (QUIET); 497 } 498 499 /* 500 * Configure several parameters and features on the FDC. 501 * Return 0 on success. 502 */ 503 static int 504 fdconf(fdc) 505 struct fdc_softc *fdc; 506 { 507 int vroom; 508 509 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 510 return (-1); 511 512 /* 513 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 514 * the PROM thinks is appropriate. 515 */ 516 if ((vroom = fdc->sc_status[7]) == 0) 517 vroom = 0x64; 518 519 /* Configure controller to use FIFO and Implied Seek */ 520 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 521 return (-1); 522 if (fdc_wrfifo(fdc, vroom) != 0) 523 return (-1); 524 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 525 return (-1); 526 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 527 return (-1); 528 /* No result phase for the NE7CMD_CFG command */ 529 530 if ((fdc->sc_flags & FDC_82077) != 0) { 531 /* Lock configuration across soft resets. */ 532 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 533 fdcresult(fdc) != 1) { 534 #ifdef DEBUG 535 printf("fdconf: CFGLOCK failed"); 536 #endif 537 return (-1); 538 } 539 } 540 541 return (0); 542 #if 0 543 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 544 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 545 if (fdc_debug) 546 printf("[version cmd]"); 547 } 548 #endif 549 } 550 551 void 552 fdcattach_mainbus(parent, self, aux) 553 struct device *parent, *self; 554 void *aux; 555 { 556 struct fdc_softc *fdc = (void *)self; 557 struct mainbus_attach_args *ma = aux; 558 559 fdc->sc_bustag = ma->ma_bustag; 560 561 if (bus_space_map( 562 ma->ma_bustag, 563 ma->ma_paddr, 564 ma->ma_size, 565 BUS_SPACE_MAP_LINEAR, 566 &fdc->sc_handle) != 0) { 567 printf("%s: cannot map registers\n", self->dv_xname); 568 return; 569 } 570 571 establish_chip_type(fdc, 572 ma->ma_bustag, 573 ma->ma_paddr, 574 ma->ma_size, 575 fdc->sc_handle); 576 577 if (fdcattach(fdc, ma->ma_pri) != 0) 578 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 579 } 580 581 void 582 fdcattach_obio(parent, self, aux) 583 struct device *parent, *self; 584 void *aux; 585 { 586 struct fdc_softc *fdc = (void *)self; 587 union obio_attach_args *uoba = aux; 588 struct sbus_attach_args *sa = &uoba->uoba_sbus; 589 590 if (sa->sa_nintr == 0) { 591 printf(": no interrupt line configured\n"); 592 return; 593 } 594 595 fdc->sc_bustag = sa->sa_bustag; 596 597 if (sbus_bus_map(sa->sa_bustag, 598 sa->sa_slot, sa->sa_offset, sa->sa_size, 599 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 600 printf("%s: cannot map control registers\n", 601 self->dv_xname); 602 return; 603 } 604 605 establish_chip_type(fdc, 606 sa->sa_bustag, 607 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 608 sa->sa_size, 609 fdc->sc_handle); 610 611 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 612 printf(": no drives attached\n"); 613 return; 614 } 615 616 if (fdcattach(fdc, sa->sa_pri) != 0) 617 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 618 } 619 620 int 621 fdcattach(fdc, pri) 622 struct fdc_softc *fdc; 623 int pri; 624 { 625 struct fdc_attach_args fa; 626 int drive_attached; 627 char code; 628 629 callout_init(&fdc->sc_timo_ch); 630 callout_init(&fdc->sc_intr_ch); 631 632 fdc->sc_state = DEVIDLE; 633 fdc->sc_itask = FDC_ITASK_NONE; 634 fdc->sc_istatus = FDC_ISTATUS_NONE; 635 fdc->sc_flags |= FDC_EIS; 636 TAILQ_INIT(&fdc->sc_drives); 637 638 if ((fdc->sc_flags & FDC_82077) != 0) { 639 fdc->sc_reg_msr = FDREG77_MSR; 640 fdc->sc_reg_fifo = FDREG77_FIFO; 641 fdc->sc_reg_dor = FDREG77_DOR; 642 fdc->sc_reg_dir = FDREG77_DIR; 643 code = '7'; 644 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 645 } else { 646 fdc->sc_reg_msr = FDREG72_MSR; 647 fdc->sc_reg_fifo = FDREG72_FIFO; 648 fdc->sc_reg_dor = 0; 649 code = '2'; 650 } 651 652 /* 653 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 654 * Note: CFG_EFIFO is active-low, initial threshold value: 8 655 */ 656 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 657 if (fdconf(fdc) != 0) { 658 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 659 return (-1); 660 } 661 662 fdciop = &fdc->sc_io; 663 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 664 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 665 printf("\n%s: cannot register interrupt handler\n", 666 fdc->sc_dev.dv_xname); 667 return (-1); 668 } 669 670 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 671 if (fdc->sc_sicookie == NULL) { 672 printf("\n%s: cannot register soft interrupt handler\n", 673 fdc->sc_dev.dv_xname); 674 return (-1); 675 } 676 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 677 678 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 679 fdc->sc_dev.dv_xname, "intr"); 680 681 /* physical limit: four drives per controller. */ 682 drive_attached = 0; 683 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 684 fa.fa_deftype = NULL; /* unknown */ 685 fa.fa_deftype = &fd_types[0]; /* XXX */ 686 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 687 drive_attached = 1; 688 } 689 690 if (drive_attached == 0) { 691 /* XXX - dis-establish interrupts here */ 692 /* return (-1); */ 693 } 694 695 return (0); 696 } 697 698 int 699 fdmatch(parent, match, aux) 700 struct device *parent; 701 struct cfdata *match; 702 void *aux; 703 { 704 struct fdc_softc *fdc = (void *)parent; 705 bus_space_tag_t t = fdc->sc_bustag; 706 bus_space_handle_t h = fdc->sc_handle; 707 struct fdc_attach_args *fa = aux; 708 int drive = fa->fa_drive; 709 int n, ok; 710 711 if (drive > 0) 712 /* XXX - for now, punt on more than one drive */ 713 return (0); 714 715 if ((fdc->sc_flags & FDC_82077) != 0) { 716 /* select drive and turn on motor */ 717 bus_space_write_1(t, h, fdc->sc_reg_dor, 718 drive | FDO_FRST | FDO_MOEN(drive)); 719 /* wait for motor to spin up */ 720 delay(250000); 721 } else { 722 auxregbisc(AUXIO4C_FDS, 0); 723 } 724 fdc->sc_nstat = 0; 725 fdc_wrfifo(fdc, NE7CMD_RECAL); 726 fdc_wrfifo(fdc, drive); 727 728 /* Wait for recalibration to complete */ 729 for (n = 0; n < 10000; n++) { 730 u_int8_t v; 731 732 delay(1000); 733 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 734 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 735 /* wait a bit longer till device *really* is ready */ 736 delay(100000); 737 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 738 break; 739 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 740 /* 741 * Got `invalid command'; we interpret it 742 * to mean that the re-calibrate hasn't in 743 * fact finished yet 744 */ 745 continue; 746 break; 747 } 748 } 749 n = fdc->sc_nstat; 750 #ifdef FD_DEBUG 751 if (fdc_debug) { 752 int i; 753 printf("fdprobe: %d stati:", n); 754 for (i = 0; i < n; i++) 755 printf(" 0x%x", fdc->sc_status[i]); 756 printf("\n"); 757 } 758 #endif 759 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 760 761 /* turn off motor */ 762 if ((fdc->sc_flags & FDC_82077) != 0) { 763 /* deselect drive and turn motor off */ 764 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 765 } else { 766 auxregbisc(0, AUXIO4C_FDS); 767 } 768 769 return (ok); 770 } 771 772 /* 773 * Controller is working, and drive responded. Attach it. 774 */ 775 void 776 fdattach(parent, self, aux) 777 struct device *parent, *self; 778 void *aux; 779 { 780 struct fdc_softc *fdc = (void *)parent; 781 struct fd_softc *fd = (void *)self; 782 struct fdc_attach_args *fa = aux; 783 struct fd_type *type = fa->fa_deftype; 784 int drive = fa->fa_drive; 785 786 callout_init(&fd->sc_motoron_ch); 787 callout_init(&fd->sc_motoroff_ch); 788 789 /* XXX Allow `flags' to override device type? */ 790 791 if (type) 792 printf(": %s %d cyl, %d head, %d sec\n", type->name, 793 type->cylinders, type->heads, type->sectrac); 794 else 795 printf(": density unknown\n"); 796 797 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 798 fd->sc_cylin = -1; 799 fd->sc_drive = drive; 800 fd->sc_deftype = type; 801 fdc->sc_fd[drive] = fd; 802 803 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 804 fdc_wrfifo(fdc, type->steprate); 805 /* XXX head load time == 6ms */ 806 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 807 808 /* 809 * Initialize and attach the disk structure. 810 */ 811 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 812 fd->sc_dk.dk_driver = &fddkdriver; 813 disk_attach(&fd->sc_dk); 814 815 /* 816 * Establish a mountroot_hook anyway in case we booted 817 * with RB_ASKNAME and get selected as the boot device. 818 */ 819 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 820 821 /* Make sure the drive motor gets turned off at shutdown time. */ 822 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 823 } 824 825 __inline struct fd_type * 826 fd_dev_to_type(fd, dev) 827 struct fd_softc *fd; 828 dev_t dev; 829 { 830 int type = FDTYPE(dev); 831 832 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 833 return (NULL); 834 return (type ? &fd_types[type - 1] : fd->sc_deftype); 835 } 836 837 void 838 fdstrategy(bp) 839 register struct buf *bp; /* IO operation to perform */ 840 { 841 struct fd_softc *fd; 842 int unit = FDUNIT(bp->b_dev); 843 int sz; 844 int s; 845 846 /* Valid unit, controller, and request? */ 847 if (unit >= fd_cd.cd_ndevs || 848 (fd = fd_cd.cd_devs[unit]) == 0 || 849 bp->b_blkno < 0 || 850 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 851 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 852 (bp->b_flags & B_FORMAT) == 0)) { 853 bp->b_error = EINVAL; 854 goto bad; 855 } 856 857 /* If it's a null transfer, return immediately. */ 858 if (bp->b_bcount == 0) 859 goto done; 860 861 sz = howmany(bp->b_bcount, DEV_BSIZE); 862 863 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 864 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 865 - bp->b_blkno; 866 if (sz == 0) { 867 /* If exactly at end of disk, return EOF. */ 868 bp->b_resid = bp->b_bcount; 869 goto done; 870 } 871 if (sz < 0) { 872 /* If past end of disk, return EINVAL. */ 873 bp->b_error = EINVAL; 874 goto bad; 875 } 876 /* Otherwise, truncate request. */ 877 bp->b_bcount = sz << DEV_BSHIFT; 878 } 879 880 bp->b_rawblkno = bp->b_blkno; 881 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 882 (FD_BSIZE(fd) * fd->sc_type->seccyl); 883 884 #ifdef FD_DEBUG 885 if (fdc_debug > 1) 886 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 887 (long long)bp->b_blkno, bp->b_bcount, 888 (long long)fd->sc_blkno, bp->b_cylinder); 889 #endif 890 891 /* Queue transfer on drive, activate drive and controller if idle. */ 892 s = splbio(); 893 BUFQ_PUT(&fd->sc_q, bp); 894 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 895 if (fd->sc_active == 0) 896 fdstart(fd); 897 #ifdef DIAGNOSTIC 898 else { 899 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 900 if (fdc->sc_state == DEVIDLE) { 901 printf("fdstrategy: controller inactive\n"); 902 fdcstart(fdc); 903 } 904 } 905 #endif 906 splx(s); 907 return; 908 909 bad: 910 bp->b_flags |= B_ERROR; 911 done: 912 /* Toss transfer; we're done early. */ 913 biodone(bp); 914 } 915 916 void 917 fdstart(fd) 918 struct fd_softc *fd; 919 { 920 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 921 int active = fdc->sc_drives.tqh_first != 0; 922 923 /* Link into controller queue. */ 924 fd->sc_active = 1; 925 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 926 927 /* If controller not already active, start it. */ 928 if (!active) 929 fdcstart(fdc); 930 } 931 932 void 933 fdfinish(fd, bp) 934 struct fd_softc *fd; 935 struct buf *bp; 936 { 937 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 938 939 /* 940 * Move this drive to the end of the queue to give others a `fair' 941 * chance. We only force a switch if N operations are completed while 942 * another drive is waiting to be serviced, since there is a long motor 943 * startup delay whenever we switch. 944 */ 945 (void)BUFQ_GET(&fd->sc_q); 946 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 947 fd->sc_ops = 0; 948 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 949 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 950 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 951 } else 952 fd->sc_active = 0; 953 } 954 bp->b_resid = fd->sc_bcount; 955 fd->sc_skip = 0; 956 957 biodone(bp); 958 /* turn off motor 5s from now */ 959 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 960 fdc->sc_state = DEVIDLE; 961 } 962 963 void 964 fdc_reset(fdc) 965 struct fdc_softc *fdc; 966 { 967 bus_space_tag_t t = fdc->sc_bustag; 968 bus_space_handle_t h = fdc->sc_handle; 969 970 if ((fdc->sc_flags & FDC_82077) != 0) { 971 bus_space_write_1(t, h, fdc->sc_reg_dor, 972 FDO_FDMAEN | FDO_MOEN(0)); 973 } 974 975 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 976 delay(10); 977 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 978 979 if ((fdc->sc_flags & FDC_82077) != 0) { 980 bus_space_write_1(t, h, fdc->sc_reg_dor, 981 FDO_FRST | FDO_FDMAEN | FDO_DS); 982 } 983 #ifdef FD_DEBUG 984 if (fdc_debug) 985 printf("fdc reset\n"); 986 #endif 987 } 988 989 void 990 fd_set_motor(fdc) 991 struct fdc_softc *fdc; 992 { 993 struct fd_softc *fd; 994 u_char status; 995 int n; 996 997 if ((fdc->sc_flags & FDC_82077) != 0) { 998 status = FDO_FRST | FDO_FDMAEN; 999 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1000 status |= fd->sc_drive; 1001 1002 for (n = 0; n < 4; n++) 1003 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1004 status |= FDO_MOEN(n); 1005 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1006 fdc->sc_reg_dor, status); 1007 } else { 1008 1009 for (n = 0; n < 4; n++) { 1010 if ((fd = fdc->sc_fd[n]) != NULL && 1011 (fd->sc_flags & FD_MOTOR) != 0) { 1012 auxregbisc(AUXIO4C_FDS, 0); 1013 return; 1014 } 1015 } 1016 auxregbisc(0, AUXIO4C_FDS); 1017 } 1018 } 1019 1020 void 1021 fd_motor_off(arg) 1022 void *arg; 1023 { 1024 struct fd_softc *fd = arg; 1025 int s; 1026 1027 s = splbio(); 1028 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1029 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 1030 splx(s); 1031 } 1032 1033 void 1034 fd_motor_on(arg) 1035 void *arg; 1036 { 1037 struct fd_softc *fd = arg; 1038 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1039 int s; 1040 1041 s = splbio(); 1042 fd->sc_flags &= ~FD_MOTOR_WAIT; 1043 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1044 (void) fdcstate(fdc); 1045 splx(s); 1046 } 1047 1048 /* 1049 * Get status bytes off the FDC after a command has finished 1050 * Returns the number of status bytes read; -1 on error. 1051 * The return value is also stored in `sc_nstat'. 1052 */ 1053 int 1054 fdcresult(fdc) 1055 struct fdc_softc *fdc; 1056 { 1057 bus_space_tag_t t = fdc->sc_bustag; 1058 bus_space_handle_t h = fdc->sc_handle; 1059 int j, n = 0; 1060 1061 for (j = 10000; j; j--) { 1062 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1063 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1064 if (v == NE7_RQM) 1065 return (fdc->sc_nstat = n); 1066 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1067 if (n >= sizeof(fdc->sc_status)) { 1068 log(LOG_ERR, "fdcresult: overrun\n"); 1069 return (-1); 1070 } 1071 fdc->sc_status[n++] = 1072 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1073 } else 1074 delay(1); 1075 } 1076 1077 log(LOG_ERR, "fdcresult: timeout\n"); 1078 return (fdc->sc_nstat = -1); 1079 } 1080 1081 /* 1082 * Write a command byte to the FDC. 1083 * Returns 0 on success; -1 on failure (i.e. timeout) 1084 */ 1085 int 1086 fdc_wrfifo(fdc, x) 1087 struct fdc_softc *fdc; 1088 u_int8_t x; 1089 { 1090 bus_space_tag_t t = fdc->sc_bustag; 1091 bus_space_handle_t h = fdc->sc_handle; 1092 int i; 1093 1094 for (i = 100000; i-- > 0;) { 1095 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1096 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1097 /* The chip is ready */ 1098 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1099 return (0); 1100 } 1101 delay(1); 1102 } 1103 return (-1); 1104 } 1105 1106 int 1107 fdc_diskchange(fdc) 1108 struct fdc_softc *fdc; 1109 { 1110 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1111 bus_space_tag_t t = fdc->sc_bustag; 1112 bus_space_handle_t h = fdc->sc_handle; 1113 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1114 return ((v & FDI_DCHG) != 0); 1115 } else if (CPU_ISSUN4C) { 1116 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1117 } 1118 return (0); 1119 } 1120 1121 int 1122 fdopen(dev, flags, fmt, p) 1123 dev_t dev; 1124 int flags, fmt; 1125 struct proc *p; 1126 { 1127 int unit, pmask; 1128 struct fd_softc *fd; 1129 struct fd_type *type; 1130 1131 unit = FDUNIT(dev); 1132 if (unit >= fd_cd.cd_ndevs) 1133 return (ENXIO); 1134 fd = fd_cd.cd_devs[unit]; 1135 if (fd == NULL) 1136 return (ENXIO); 1137 type = fd_dev_to_type(fd, dev); 1138 if (type == NULL) 1139 return (ENXIO); 1140 1141 if ((fd->sc_flags & FD_OPEN) != 0 && 1142 fd->sc_type != type) 1143 return (EBUSY); 1144 1145 fd->sc_type = type; 1146 fd->sc_cylin = -1; 1147 fd->sc_flags |= FD_OPEN; 1148 1149 /* 1150 * Only update the disklabel if we're not open anywhere else. 1151 */ 1152 if (fd->sc_dk.dk_openmask == 0) 1153 fdgetdisklabel(dev); 1154 1155 pmask = (1 << DISKPART(dev)); 1156 1157 switch (fmt) { 1158 case S_IFCHR: 1159 fd->sc_dk.dk_copenmask |= pmask; 1160 break; 1161 1162 case S_IFBLK: 1163 fd->sc_dk.dk_bopenmask |= pmask; 1164 break; 1165 } 1166 fd->sc_dk.dk_openmask = 1167 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1168 1169 return (0); 1170 } 1171 1172 int 1173 fdclose(dev, flags, fmt, p) 1174 dev_t dev; 1175 int flags, fmt; 1176 struct proc *p; 1177 { 1178 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1179 int pmask = (1 << DISKPART(dev)); 1180 1181 fd->sc_flags &= ~FD_OPEN; 1182 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1183 1184 switch (fmt) { 1185 case S_IFCHR: 1186 fd->sc_dk.dk_copenmask &= ~pmask; 1187 break; 1188 1189 case S_IFBLK: 1190 fd->sc_dk.dk_bopenmask &= ~pmask; 1191 break; 1192 } 1193 fd->sc_dk.dk_openmask = 1194 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1195 1196 return (0); 1197 } 1198 1199 int 1200 fdread(dev, uio, flag) 1201 dev_t dev; 1202 struct uio *uio; 1203 int flag; 1204 { 1205 1206 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1207 } 1208 1209 int 1210 fdwrite(dev, uio, flag) 1211 dev_t dev; 1212 struct uio *uio; 1213 int flag; 1214 { 1215 1216 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1217 } 1218 1219 void 1220 fdcstart(fdc) 1221 struct fdc_softc *fdc; 1222 { 1223 1224 #ifdef DIAGNOSTIC 1225 /* only got here if controller's drive queue was inactive; should 1226 be in idle state */ 1227 if (fdc->sc_state != DEVIDLE) { 1228 printf("fdcstart: not idle\n"); 1229 return; 1230 } 1231 #endif 1232 (void) fdcstate(fdc); 1233 } 1234 1235 void 1236 fdcstatus(fdc, s) 1237 struct fdc_softc *fdc; 1238 const char *s; 1239 { 1240 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1241 int n; 1242 char bits[64]; 1243 1244 /* Just print last status */ 1245 n = fdc->sc_nstat; 1246 1247 #if 0 1248 /* 1249 * A 82072 seems to return <invalid command> on 1250 * gratuitous Sense Interrupt commands. 1251 */ 1252 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1253 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1254 (void) fdcresult(fdc); 1255 n = 2; 1256 } 1257 #endif 1258 1259 printf("%s: %s: state %d", 1260 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1261 1262 switch (n) { 1263 case 0: 1264 printf("\n"); 1265 break; 1266 case 2: 1267 printf(" (st0 %s cyl %d)\n", 1268 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1269 bits, sizeof(bits)), fdc->sc_status[1]); 1270 break; 1271 case 7: 1272 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1273 NE7_ST0BITS, bits, sizeof(bits))); 1274 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1275 NE7_ST1BITS, bits, sizeof(bits))); 1276 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1277 NE7_ST2BITS, bits, sizeof(bits))); 1278 printf(" cyl %d head %d sec %d)\n", 1279 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1280 break; 1281 #ifdef DIAGNOSTIC 1282 default: 1283 printf(" fdcstatus: weird size: %d\n", n); 1284 break; 1285 #endif 1286 } 1287 } 1288 1289 void 1290 fdctimeout(arg) 1291 void *arg; 1292 { 1293 struct fdc_softc *fdc = arg; 1294 struct fd_softc *fd; 1295 int s; 1296 1297 s = splbio(); 1298 fd = fdc->sc_drives.tqh_first; 1299 if (fd == NULL) { 1300 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1301 fdc->sc_dev.dv_xname, 1302 fdc->sc_state, fdc->sc_istatus); 1303 fdc->sc_state = DEVIDLE; 1304 goto out; 1305 } 1306 1307 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1308 fdc->sc_state++; 1309 else 1310 fdc->sc_state = DEVIDLE; 1311 1312 (void) fdcstate(fdc); 1313 out: 1314 splx(s); 1315 1316 } 1317 1318 void 1319 fdcpseudointr(arg) 1320 void *arg; 1321 { 1322 struct fdc_softc *fdc = arg; 1323 int s; 1324 1325 /* Just ensure it has the right spl. */ 1326 s = splbio(); 1327 (void) fdcstate(fdc); 1328 splx(s); 1329 } 1330 1331 1332 /* 1333 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1334 * handler is available. Unfortunately, we have no reliable way to 1335 * determine that the interrupt really came from the floppy controller; 1336 * just hope that the other devices that share this interrupt level 1337 * can do better.. 1338 */ 1339 int 1340 fdc_c_hwintr(arg) 1341 void *arg; 1342 { 1343 struct fdc_softc *fdc = arg; 1344 bus_space_tag_t t = fdc->sc_bustag; 1345 bus_space_handle_t h = fdc->sc_handle; 1346 1347 switch (fdc->sc_itask) { 1348 case FDC_ITASK_NONE: 1349 return (0); 1350 case FDC_ITASK_SENSEI: 1351 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1352 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1353 else 1354 fdc->sc_istatus = FDC_ISTATUS_DONE; 1355 softintr_schedule(fdc->sc_sicookie); 1356 return (1); 1357 case FDC_ITASK_RESULT: 1358 if (fdcresult(fdc) == -1) 1359 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1360 else 1361 fdc->sc_istatus = FDC_ISTATUS_DONE; 1362 softintr_schedule(fdc->sc_sicookie); 1363 return (1); 1364 case FDC_ITASK_DMA: 1365 /* Proceed with pseudo-DMA below */ 1366 break; 1367 default: 1368 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1369 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1370 softintr_schedule(fdc->sc_sicookie); 1371 return (1); 1372 } 1373 1374 /* 1375 * Pseudo DMA in progress 1376 */ 1377 for (;;) { 1378 u_int8_t msr; 1379 1380 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1381 1382 if ((msr & NE7_RQM) == 0) 1383 /* That's all this round */ 1384 break; 1385 1386 if ((msr & NE7_NDM) == 0) { 1387 fdcresult(fdc); 1388 fdc->sc_istatus = FDC_ISTATUS_DONE; 1389 softintr_schedule(fdc->sc_sicookie); 1390 #ifdef FD_DEBUG 1391 if (fdc_debug > 1) 1392 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1393 #endif 1394 break; 1395 } 1396 1397 /* Another byte can be transferred */ 1398 if ((msr & NE7_DIO) != 0) 1399 *fdc->sc_data = 1400 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1401 else 1402 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1403 *fdc->sc_data); 1404 1405 fdc->sc_data++; 1406 if (--fdc->sc_tc == 0) { 1407 fdc->sc_istatus = FDC_ISTATUS_DONE; 1408 FTC_FLIP; 1409 fdcresult(fdc); 1410 softintr_schedule(fdc->sc_sicookie); 1411 break; 1412 } 1413 } 1414 return (1); 1415 } 1416 1417 void 1418 fdcswintr(arg) 1419 void *arg; 1420 { 1421 struct fdc_softc *fdc = arg; 1422 1423 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1424 /* This (software) interrupt is not for us */ 1425 return; 1426 1427 switch (fdc->sc_istatus) { 1428 case FDC_ISTATUS_ERROR: 1429 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1430 break; 1431 case FDC_ISTATUS_SPURIOUS: 1432 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1433 break; 1434 } 1435 1436 fdcstate(fdc); 1437 return; 1438 } 1439 1440 int 1441 fdcstate(fdc) 1442 struct fdc_softc *fdc; 1443 { 1444 #define st0 fdc->sc_status[0] 1445 #define st1 fdc->sc_status[1] 1446 #define cyl fdc->sc_status[1] 1447 #define FDC_WRFIFO(fdc, c) do { \ 1448 if (fdc_wrfifo(fdc, (c))) { \ 1449 goto xxx; \ 1450 } \ 1451 } while(0) 1452 1453 struct fd_softc *fd; 1454 struct buf *bp; 1455 int read, head, sec, nblks; 1456 struct fd_type *type; 1457 struct ne7_fd_formb *finfo = NULL; 1458 1459 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1460 /* Prevent loop if the reset sequence produces errors */ 1461 if (fdc->sc_state != RESETCOMPLETE && 1462 fdc->sc_state != RECALWAIT && 1463 fdc->sc_state != RECALCOMPLETE) 1464 fdc->sc_state = DORESET; 1465 } 1466 1467 /* Clear I task/status field */ 1468 fdc->sc_istatus = FDC_ISTATUS_NONE; 1469 fdc->sc_itask = FDC_ITASK_NONE; 1470 1471 loop: 1472 /* Is there a drive for the controller to do a transfer with? */ 1473 fd = fdc->sc_drives.tqh_first; 1474 if (fd == NULL) { 1475 fdc->sc_state = DEVIDLE; 1476 return (0); 1477 } 1478 1479 /* Is there a transfer to this drive? If not, deactivate drive. */ 1480 bp = BUFQ_PEEK(&fd->sc_q); 1481 if (bp == NULL) { 1482 fd->sc_ops = 0; 1483 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1484 fd->sc_active = 0; 1485 goto loop; 1486 } 1487 1488 if (bp->b_flags & B_FORMAT) 1489 finfo = (struct ne7_fd_formb *)bp->b_data; 1490 1491 switch (fdc->sc_state) { 1492 case DEVIDLE: 1493 fdc->sc_errors = 0; 1494 fd->sc_skip = 0; 1495 fd->sc_bcount = bp->b_bcount; 1496 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1497 callout_stop(&fd->sc_motoroff_ch); 1498 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1499 fdc->sc_state = MOTORWAIT; 1500 return (1); 1501 } 1502 if ((fd->sc_flags & FD_MOTOR) == 0) { 1503 /* Turn on the motor, being careful about pairing. */ 1504 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1505 if (ofd && ofd->sc_flags & FD_MOTOR) { 1506 callout_stop(&ofd->sc_motoroff_ch); 1507 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1508 } 1509 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1510 fd_set_motor(fdc); 1511 fdc->sc_state = MOTORWAIT; 1512 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1513 /* Allow .25s for motor to stabilize. */ 1514 callout_reset(&fd->sc_motoron_ch, hz / 4, 1515 fd_motor_on, fd); 1516 } else { 1517 fd->sc_flags &= ~FD_MOTOR_WAIT; 1518 goto loop; 1519 } 1520 return (1); 1521 } 1522 /* Make sure the right drive is selected. */ 1523 fd_set_motor(fdc); 1524 1525 if (fdc_diskchange(fdc)) 1526 goto dodskchg; 1527 1528 /*FALLTHROUGH*/ 1529 case DOSEEK: 1530 doseek: 1531 if ((fdc->sc_flags & FDC_EIS) && 1532 (bp->b_flags & B_FORMAT) == 0) { 1533 fd->sc_cylin = bp->b_cylinder; 1534 /* We use implied seek */ 1535 goto doio; 1536 } 1537 1538 if (fd->sc_cylin == bp->b_cylinder) 1539 goto doio; 1540 1541 fd->sc_cylin = -1; 1542 fdc->sc_state = SEEKWAIT; 1543 fdc->sc_nstat = 0; 1544 1545 fd->sc_dk.dk_seek++; 1546 1547 disk_busy(&fd->sc_dk); 1548 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1549 1550 /* specify command */ 1551 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1552 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1553 /* XXX head load time == 6ms */ 1554 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1555 1556 fdc->sc_itask = FDC_ITASK_SENSEI; 1557 /* seek function */ 1558 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1559 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1560 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1561 return (1); 1562 1563 case DODSKCHG: 1564 dodskchg: 1565 /* 1566 * Disk change: force a seek operation by going to cyl 1 1567 * followed by a recalibrate. 1568 */ 1569 disk_busy(&fd->sc_dk); 1570 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1571 fd->sc_cylin = -1; 1572 fdc->sc_nstat = 0; 1573 fdc->sc_state = DSKCHGWAIT; 1574 1575 fdc->sc_itask = FDC_ITASK_SENSEI; 1576 /* seek function */ 1577 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1578 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1579 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1580 return (1); 1581 1582 case DSKCHGWAIT: 1583 callout_stop(&fdc->sc_timo_ch); 1584 disk_unbusy(&fd->sc_dk, 0, 0); 1585 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1586 cyl != 1 * fd->sc_type->step) { 1587 fdcstatus(fdc, "dskchg seek failed"); 1588 fdc->sc_state = DORESET; 1589 } else 1590 fdc->sc_state = DORECAL; 1591 1592 if (fdc_diskchange(fdc)) { 1593 printf("%s: cannot clear disk change status\n", 1594 fdc->sc_dev.dv_xname); 1595 fdc->sc_state = DORESET; 1596 } 1597 goto loop; 1598 1599 case DOIO: 1600 doio: 1601 if (finfo != NULL) 1602 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1603 (char *)finfo; 1604 type = fd->sc_type; 1605 sec = fd->sc_blkno % type->seccyl; 1606 nblks = type->seccyl - sec; 1607 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1608 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1609 fd->sc_nblks = nblks; 1610 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1611 head = sec / type->sectrac; 1612 sec -= head * type->sectrac; 1613 #ifdef DIAGNOSTIC 1614 {int block; 1615 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1616 if (block != fd->sc_blkno) { 1617 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1618 #ifdef DDB 1619 Debugger(); 1620 #endif 1621 }} 1622 #endif 1623 read = bp->b_flags & B_READ; 1624 1625 /* Setup for pseudo DMA */ 1626 fdc->sc_data = bp->b_data + fd->sc_skip; 1627 fdc->sc_tc = fd->sc_nbytes; 1628 1629 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1630 fdc->sc_reg_drs, type->rate); 1631 #ifdef FD_DEBUG 1632 if (fdc_debug > 1) 1633 printf("fdcstate: doio: %s drive %d " 1634 "track %d head %d sec %d nblks %d\n", 1635 finfo ? "format" : 1636 (read ? "read" : "write"), 1637 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1638 #endif 1639 fdc->sc_state = IOCOMPLETE; 1640 fdc->sc_itask = FDC_ITASK_DMA; 1641 fdc->sc_nstat = 0; 1642 1643 disk_busy(&fd->sc_dk); 1644 1645 /* allow 3 seconds for operation */ 1646 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1647 1648 if (finfo != NULL) { 1649 /* formatting */ 1650 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1651 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1652 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1653 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1654 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1655 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1656 } else { 1657 if (read) 1658 FDC_WRFIFO(fdc, NE7CMD_READ); 1659 else 1660 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1661 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1662 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1663 FDC_WRFIFO(fdc, head); 1664 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1665 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1666 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1667 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1668 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1669 } 1670 1671 return (1); /* will return later */ 1672 1673 case SEEKWAIT: 1674 callout_stop(&fdc->sc_timo_ch); 1675 fdc->sc_state = SEEKCOMPLETE; 1676 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1677 /* allow 1/50 second for heads to settle */ 1678 callout_reset(&fdc->sc_intr_ch, hz / 50, 1679 fdcpseudointr, fdc); 1680 return (1); /* will return later */ 1681 } 1682 /*FALLTHROUGH*/ 1683 case SEEKCOMPLETE: 1684 /* no data on seek */ 1685 disk_unbusy(&fd->sc_dk, 0, 0); 1686 1687 /* Make sure seek really happened. */ 1688 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1689 cyl != bp->b_cylinder * fd->sc_type->step) { 1690 #ifdef FD_DEBUG 1691 if (fdc_debug) 1692 fdcstatus(fdc, "seek failed"); 1693 #endif 1694 fdcretry(fdc); 1695 goto loop; 1696 } 1697 fd->sc_cylin = bp->b_cylinder; 1698 goto doio; 1699 1700 case IOTIMEDOUT: 1701 /* 1702 * Try to abort the I/O operation without resetting 1703 * the chip first. Poke TC and arrange to pick up 1704 * the timed out I/O command's status. 1705 */ 1706 fdc->sc_itask = FDC_ITASK_RESULT; 1707 fdc->sc_state = IOCLEANUPWAIT; 1708 fdc->sc_nstat = 0; 1709 /* 1/10 second should be enough */ 1710 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1711 FTC_FLIP; 1712 return (1); 1713 1714 case IOCLEANUPTIMEDOUT: 1715 case SEEKTIMEDOUT: 1716 case RECALTIMEDOUT: 1717 case RESETTIMEDOUT: 1718 case DSKCHGTIMEDOUT: 1719 fdcstatus(fdc, "timeout"); 1720 1721 /* All other timeouts always roll through to a chip reset */ 1722 fdcretry(fdc); 1723 1724 /* Force reset, no matter what fdcretry() says */ 1725 fdc->sc_state = DORESET; 1726 goto loop; 1727 1728 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1729 callout_stop(&fdc->sc_timo_ch); 1730 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1731 (bp->b_flags & B_READ)); 1732 fdcretry(fdc); 1733 goto loop; 1734 1735 case IOCOMPLETE: /* IO DONE, post-analyze */ 1736 callout_stop(&fdc->sc_timo_ch); 1737 1738 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1739 (bp->b_flags & B_READ)); 1740 1741 if (fdc->sc_nstat != 7 || st1 != 0 || 1742 ((st0 & 0xf8) != 0 && 1743 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1744 #ifdef FD_DEBUG 1745 if (fdc_debug) { 1746 fdcstatus(fdc, 1747 bp->b_flags & B_READ 1748 ? "read failed" : "write failed"); 1749 printf("blkno %lld nblks %d nstat %d tc %d\n", 1750 (long long)fd->sc_blkno, fd->sc_nblks, 1751 fdc->sc_nstat, fdc->sc_tc); 1752 } 1753 #endif 1754 if (fdc->sc_nstat == 7 && 1755 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1756 1757 /* 1758 * Silently retry overruns if no other 1759 * error bit is set. Adjust threshold. 1760 */ 1761 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1762 if (thr < 15) { 1763 thr++; 1764 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1765 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1766 #ifdef FD_DEBUG 1767 if (fdc_debug) 1768 printf("fdc: %d -> threshold\n", thr); 1769 #endif 1770 fdconf(fdc); 1771 fdc->sc_overruns = 0; 1772 } 1773 if (++fdc->sc_overruns < 3) { 1774 fdc->sc_state = DOIO; 1775 goto loop; 1776 } 1777 } 1778 fdcretry(fdc); 1779 goto loop; 1780 } 1781 if (fdc->sc_errors) { 1782 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1783 fd->sc_skip / FD_BSIZE(fd), 1784 (struct disklabel *)NULL); 1785 printf("\n"); 1786 fdc->sc_errors = 0; 1787 } else { 1788 if (--fdc->sc_overruns < -20) { 1789 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1790 if (thr > 0) { 1791 thr--; 1792 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1793 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1794 #ifdef FD_DEBUG 1795 if (fdc_debug) 1796 printf("fdc: %d -> threshold\n", thr); 1797 #endif 1798 fdconf(fdc); 1799 } 1800 fdc->sc_overruns = 0; 1801 } 1802 } 1803 fd->sc_blkno += fd->sc_nblks; 1804 fd->sc_skip += fd->sc_nbytes; 1805 fd->sc_bcount -= fd->sc_nbytes; 1806 if (finfo == NULL && fd->sc_bcount > 0) { 1807 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1808 goto doseek; 1809 } 1810 fdfinish(fd, bp); 1811 goto loop; 1812 1813 case DORESET: 1814 /* try a reset, keep motor on */ 1815 fd_set_motor(fdc); 1816 delay(100); 1817 fdc->sc_nstat = 0; 1818 fdc->sc_itask = FDC_ITASK_SENSEI; 1819 fdc->sc_state = RESETCOMPLETE; 1820 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1821 fdc_reset(fdc); 1822 return (1); /* will return later */ 1823 1824 case RESETCOMPLETE: 1825 callout_stop(&fdc->sc_timo_ch); 1826 fdconf(fdc); 1827 1828 /* FALLTHROUGH */ 1829 case DORECAL: 1830 fdc->sc_state = RECALWAIT; 1831 fdc->sc_itask = FDC_ITASK_SENSEI; 1832 fdc->sc_nstat = 0; 1833 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1834 /* recalibrate function */ 1835 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1836 FDC_WRFIFO(fdc, fd->sc_drive); 1837 return (1); /* will return later */ 1838 1839 case RECALWAIT: 1840 callout_stop(&fdc->sc_timo_ch); 1841 fdc->sc_state = RECALCOMPLETE; 1842 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1843 /* allow 1/30 second for heads to settle */ 1844 callout_reset(&fdc->sc_intr_ch, hz / 30, 1845 fdcpseudointr, fdc); 1846 return (1); /* will return later */ 1847 } 1848 1849 case RECALCOMPLETE: 1850 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1851 #ifdef FD_DEBUG 1852 if (fdc_debug) 1853 fdcstatus(fdc, "recalibrate failed"); 1854 #endif 1855 fdcretry(fdc); 1856 goto loop; 1857 } 1858 fd->sc_cylin = 0; 1859 goto doseek; 1860 1861 case MOTORWAIT: 1862 if (fd->sc_flags & FD_MOTOR_WAIT) 1863 return (1); /* time's not up yet */ 1864 goto doseek; 1865 1866 default: 1867 fdcstatus(fdc, "stray interrupt"); 1868 return (1); 1869 } 1870 #ifdef DIAGNOSTIC 1871 panic("fdcintr: impossible"); 1872 #endif 1873 1874 xxx: 1875 /* 1876 * We get here if the chip locks up in FDC_WRFIFO() 1877 * Cancel any operation and schedule a reset 1878 */ 1879 callout_stop(&fdc->sc_timo_ch); 1880 fdcretry(fdc); 1881 (fdc)->sc_state = DORESET; 1882 goto loop; 1883 1884 #undef st0 1885 #undef st1 1886 #undef cyl 1887 } 1888 1889 void 1890 fdcretry(fdc) 1891 struct fdc_softc *fdc; 1892 { 1893 struct fd_softc *fd; 1894 struct buf *bp; 1895 int error = EIO; 1896 1897 fd = fdc->sc_drives.tqh_first; 1898 bp = BUFQ_PEEK(&fd->sc_q); 1899 1900 fdc->sc_overruns = 0; 1901 if (fd->sc_opts & FDOPT_NORETRY) 1902 goto fail; 1903 1904 switch (fdc->sc_errors) { 1905 case 0: 1906 if (fdc->sc_nstat == 7 && 1907 (fdc->sc_status[0] & 0xd8) == 0x40 && 1908 (fdc->sc_status[1] & 0x2) == 0x2) { 1909 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1910 error = EROFS; 1911 goto failsilent; 1912 } 1913 /* try again */ 1914 fdc->sc_state = 1915 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1916 break; 1917 1918 case 1: case 2: case 3: 1919 /* didn't work; try recalibrating */ 1920 fdc->sc_state = DORECAL; 1921 break; 1922 1923 case 4: 1924 if (fdc->sc_nstat == 7 && 1925 fdc->sc_status[0] == 0 && 1926 fdc->sc_status[1] == 0 && 1927 fdc->sc_status[2] == 0) { 1928 /* 1929 * We've retried a few times and we've got 1930 * valid status and all three status bytes 1931 * are zero. Assume this condition is the 1932 * result of no disk loaded into the drive. 1933 */ 1934 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1935 error = ENODEV; 1936 goto failsilent; 1937 } 1938 1939 /* still no go; reset the bastard */ 1940 fdc->sc_state = DORESET; 1941 break; 1942 1943 default: 1944 fail: 1945 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1946 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1947 fd->sc_skip / FD_BSIZE(fd), 1948 (struct disklabel *)NULL); 1949 printf("\n"); 1950 fdcstatus(fdc, "controller status"); 1951 } 1952 1953 failsilent: 1954 bp->b_flags |= B_ERROR; 1955 bp->b_error = error; 1956 fdfinish(fd, bp); 1957 } 1958 fdc->sc_errors++; 1959 } 1960 1961 int 1962 fdioctl(dev, cmd, addr, flag, p) 1963 dev_t dev; 1964 u_long cmd; 1965 caddr_t addr; 1966 int flag; 1967 struct proc *p; 1968 { 1969 struct fd_softc *fd; 1970 struct fdc_softc *fdc; 1971 struct fdformat_parms *form_parms; 1972 struct fdformat_cmd *form_cmd; 1973 struct ne7_fd_formb *fd_formb; 1974 int il[FD_MAX_NSEC + 1]; 1975 int unit; 1976 int i, j; 1977 int error; 1978 1979 unit = FDUNIT(dev); 1980 if (unit >= fd_cd.cd_ndevs) 1981 return (ENXIO); 1982 1983 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1984 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1985 1986 switch (cmd) { 1987 case DIOCGDINFO: 1988 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1989 return 0; 1990 1991 case DIOCWLABEL: 1992 if ((flag & FWRITE) == 0) 1993 return EBADF; 1994 /* XXX do something */ 1995 return (0); 1996 1997 case DIOCWDINFO: 1998 if ((flag & FWRITE) == 0) 1999 return (EBADF); 2000 2001 error = setdisklabel(fd->sc_dk.dk_label, 2002 (struct disklabel *)addr, 0, 2003 fd->sc_dk.dk_cpulabel); 2004 if (error) 2005 return (error); 2006 2007 error = writedisklabel(dev, fdstrategy, 2008 fd->sc_dk.dk_label, 2009 fd->sc_dk.dk_cpulabel); 2010 return (error); 2011 2012 case DIOCLOCK: 2013 /* 2014 * Nothing to do here, really. 2015 */ 2016 return (0); 2017 2018 case DIOCEJECT: 2019 if (*(int *)addr == 0) { 2020 int part = DISKPART(dev); 2021 /* 2022 * Don't force eject: check that we are the only 2023 * partition open. If so, unlock it. 2024 */ 2025 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2026 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2027 fd->sc_dk.dk_openmask) { 2028 return (EBUSY); 2029 } 2030 } 2031 /* FALLTHROUGH */ 2032 case ODIOCEJECT: 2033 fd_do_eject(fd); 2034 return (0); 2035 2036 case FDIOCGETFORMAT: 2037 form_parms = (struct fdformat_parms *)addr; 2038 form_parms->fdformat_version = FDFORMAT_VERSION; 2039 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2040 form_parms->ncyl = fd->sc_type->cylinders; 2041 form_parms->nspt = fd->sc_type->sectrac; 2042 form_parms->ntrk = fd->sc_type->heads; 2043 form_parms->stepspercyl = fd->sc_type->step; 2044 form_parms->gaplen = fd->sc_type->gap2; 2045 form_parms->fillbyte = fd->sc_type->fillbyte; 2046 form_parms->interleave = fd->sc_type->interleave; 2047 switch (fd->sc_type->rate) { 2048 case FDC_500KBPS: 2049 form_parms->xfer_rate = 500 * 1024; 2050 break; 2051 case FDC_300KBPS: 2052 form_parms->xfer_rate = 300 * 1024; 2053 break; 2054 case FDC_250KBPS: 2055 form_parms->xfer_rate = 250 * 1024; 2056 break; 2057 default: 2058 return (EINVAL); 2059 } 2060 return (0); 2061 2062 case FDIOCSETFORMAT: 2063 if ((flag & FWRITE) == 0) 2064 return (EBADF); /* must be opened for writing */ 2065 2066 form_parms = (struct fdformat_parms *)addr; 2067 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2068 return (EINVAL);/* wrong version of formatting prog */ 2069 2070 i = form_parms->nbps >> 7; 2071 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2072 i & ~(1 << (ffs(i)-1))) 2073 /* not a power-of-two multiple of 128 */ 2074 return (EINVAL); 2075 2076 switch (form_parms->xfer_rate) { 2077 case 500 * 1024: 2078 fd->sc_type->rate = FDC_500KBPS; 2079 break; 2080 case 300 * 1024: 2081 fd->sc_type->rate = FDC_300KBPS; 2082 break; 2083 case 250 * 1024: 2084 fd->sc_type->rate = FDC_250KBPS; 2085 break; 2086 default: 2087 return (EINVAL); 2088 } 2089 2090 if (form_parms->nspt > FD_MAX_NSEC || 2091 form_parms->fillbyte > 0xff || 2092 form_parms->interleave > 0xff) 2093 return EINVAL; 2094 fd->sc_type->sectrac = form_parms->nspt; 2095 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2096 return EINVAL; 2097 fd->sc_type->heads = form_parms->ntrk; 2098 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2099 fd->sc_type->secsize = ffs(i)-1; 2100 fd->sc_type->gap2 = form_parms->gaplen; 2101 fd->sc_type->cylinders = form_parms->ncyl; 2102 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2103 form_parms->nbps / DEV_BSIZE; 2104 fd->sc_type->step = form_parms->stepspercyl; 2105 fd->sc_type->fillbyte = form_parms->fillbyte; 2106 fd->sc_type->interleave = form_parms->interleave; 2107 return (0); 2108 2109 case FDIOCFORMAT_TRACK: 2110 if((flag & FWRITE) == 0) 2111 /* must be opened for writing */ 2112 return (EBADF); 2113 form_cmd = (struct fdformat_cmd *)addr; 2114 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2115 /* wrong version of formatting prog */ 2116 return (EINVAL); 2117 2118 if (form_cmd->head >= fd->sc_type->heads || 2119 form_cmd->cylinder >= fd->sc_type->cylinders) { 2120 return (EINVAL); 2121 } 2122 2123 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2124 M_TEMP, M_NOWAIT); 2125 if (fd_formb == 0) 2126 return (ENOMEM); 2127 2128 fd_formb->head = form_cmd->head; 2129 fd_formb->cyl = form_cmd->cylinder; 2130 fd_formb->transfer_rate = fd->sc_type->rate; 2131 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2132 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2133 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2134 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2135 2136 bzero(il, sizeof il); 2137 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2138 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2139 j++; 2140 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2141 j += fd->sc_type->interleave; 2142 } 2143 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2144 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2145 fd_formb->fd_formb_headno(i) = form_cmd->head; 2146 fd_formb->fd_formb_secno(i) = il[i+1]; 2147 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2148 } 2149 2150 error = fdformat(dev, fd_formb, p); 2151 free(fd_formb, M_TEMP); 2152 return error; 2153 2154 case FDIOCGETOPTS: /* get drive options */ 2155 *(int *)addr = fd->sc_opts; 2156 return (0); 2157 2158 case FDIOCSETOPTS: /* set drive options */ 2159 fd->sc_opts = *(int *)addr; 2160 return (0); 2161 2162 #ifdef FD_DEBUG 2163 case _IO('f', 100): 2164 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2165 fdcresult(fdc); 2166 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2167 for (i = 0; i < fdc->sc_nstat; i++) 2168 printf(" 0x%x", fdc->sc_status[i]); 2169 printf(">\n"); 2170 return (0); 2171 2172 case _IOW('f', 101, int): 2173 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2174 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2175 fdconf(fdc); 2176 return (0); 2177 2178 case _IO('f', 102): 2179 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2180 fdcresult(fdc); 2181 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2182 for (i=0; i< fdc->sc_nstat; i++) 2183 printf(" 0x%x", fdc->sc_status[i]); 2184 printf(">\n"); 2185 return (0); 2186 #endif 2187 default: 2188 return (ENOTTY); 2189 } 2190 2191 #ifdef DIAGNOSTIC 2192 panic("fdioctl: impossible"); 2193 #endif 2194 } 2195 2196 int 2197 fdformat(dev, finfo, p) 2198 dev_t dev; 2199 struct ne7_fd_formb *finfo; 2200 struct proc *p; 2201 { 2202 int rv = 0, s; 2203 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2204 struct fd_type *type = fd->sc_type; 2205 struct buf *bp; 2206 2207 /* set up a buffer header for fdstrategy() */ 2208 s = splbio(); 2209 bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT); 2210 splx(s); 2211 if (bp == NULL) 2212 return (ENOBUFS); 2213 2214 memset((void *)bp, 0, sizeof(struct buf)); 2215 BUF_INIT(bp); 2216 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2217 bp->b_proc = p; 2218 bp->b_dev = dev; 2219 2220 /* 2221 * Calculate a fake blkno, so fdstrategy() would initiate a 2222 * seek to the requested cylinder. 2223 */ 2224 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2225 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2226 / DEV_BSIZE; 2227 2228 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2229 bp->b_data = (caddr_t)finfo; 2230 2231 #ifdef FD_DEBUG 2232 if (fdc_debug) { 2233 int i; 2234 2235 printf("fdformat: blkno 0x%llx count %d\n", 2236 (unsigned long long)bp->b_blkno, bp->b_bcount); 2237 2238 printf("\tcyl:\t%d\n", finfo->cyl); 2239 printf("\thead:\t%d\n", finfo->head); 2240 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2241 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2242 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2243 printf("\ttrack data:"); 2244 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2245 printf(" [c%d h%d s%d]", 2246 finfo->fd_formb_cylno(i), 2247 finfo->fd_formb_headno(i), 2248 finfo->fd_formb_secno(i) ); 2249 if (finfo->fd_formb_secsize(i) != 2) 2250 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2251 } 2252 printf("\n"); 2253 } 2254 #endif 2255 2256 /* now do the format */ 2257 fdstrategy(bp); 2258 2259 /* ...and wait for it to complete */ 2260 rv = biowait(bp); 2261 s = splbio(); 2262 pool_put(&bufpool, bp); 2263 splx(s); 2264 return (rv); 2265 } 2266 2267 void 2268 fdgetdisklabel(dev) 2269 dev_t dev; 2270 { 2271 int unit = FDUNIT(dev), i; 2272 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2273 struct disklabel *lp = fd->sc_dk.dk_label; 2274 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2275 2276 bzero(lp, sizeof(struct disklabel)); 2277 bzero(lp, sizeof(struct cpu_disklabel)); 2278 2279 lp->d_type = DTYPE_FLOPPY; 2280 lp->d_secsize = FD_BSIZE(fd); 2281 lp->d_secpercyl = fd->sc_type->seccyl; 2282 lp->d_nsectors = fd->sc_type->sectrac; 2283 lp->d_ncylinders = fd->sc_type->cylinders; 2284 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2285 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2286 lp->d_rpm = 3600; /* XXX like it matters... */ 2287 2288 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2289 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2290 lp->d_interleave = 1; 2291 2292 lp->d_partitions[RAW_PART].p_offset = 0; 2293 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2294 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2295 lp->d_npartitions = RAW_PART + 1; 2296 2297 lp->d_magic = DISKMAGIC; 2298 lp->d_magic2 = DISKMAGIC; 2299 lp->d_checksum = dkcksum(lp); 2300 2301 /* 2302 * Call the generic disklabel extraction routine. If there's 2303 * not a label there, fake it. 2304 */ 2305 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2306 strncpy(lp->d_packname, "default label", 2307 sizeof(lp->d_packname)); 2308 /* 2309 * Reset the partition info; it might have gotten 2310 * trashed in readdisklabel(). 2311 * 2312 * XXX Why do we have to do this? readdisklabel() 2313 * should be safe... 2314 */ 2315 for (i = 0; i < MAXPARTITIONS; ++i) { 2316 lp->d_partitions[i].p_offset = 0; 2317 if (i == RAW_PART) { 2318 lp->d_partitions[i].p_size = 2319 lp->d_secpercyl * lp->d_ncylinders; 2320 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2321 } else { 2322 lp->d_partitions[i].p_size = 0; 2323 lp->d_partitions[i].p_fstype = FS_UNUSED; 2324 } 2325 } 2326 lp->d_npartitions = RAW_PART + 1; 2327 } 2328 } 2329 2330 void 2331 fd_do_eject(fd) 2332 struct fd_softc *fd; 2333 { 2334 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2335 2336 if (CPU_ISSUN4C) { 2337 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2338 delay(10); 2339 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2340 return; 2341 } 2342 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2343 bus_space_tag_t t = fdc->sc_bustag; 2344 bus_space_handle_t h = fdc->sc_handle; 2345 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2346 2347 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2348 delay(10); 2349 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2350 return; 2351 } 2352 } 2353 2354 #ifdef MEMORY_DISK_HOOKS 2355 int fd_read_md_image __P((size_t *, caddr_t *)); 2356 #endif 2357 2358 /* ARGSUSED */ 2359 void 2360 fd_mountroot_hook(dev) 2361 struct device *dev; 2362 { 2363 int c; 2364 2365 fd_do_eject((struct fd_softc *)dev); 2366 printf("Insert filesystem floppy and press return."); 2367 for (;;) { 2368 c = cngetc(); 2369 if ((c == '\r') || (c == '\n')) { 2370 printf("\n"); 2371 break; 2372 } 2373 } 2374 } 2375 2376 #ifdef MEMORY_DISK_HOOKS 2377 2378 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2379 2380 int 2381 fd_read_md_image(sizep, addrp) 2382 size_t *sizep; 2383 caddr_t *addrp; 2384 { 2385 struct buf buf, *bp = &buf; 2386 dev_t dev; 2387 off_t offset; 2388 caddr_t addr; 2389 2390 dev = makedev(54,0); /* XXX */ 2391 2392 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2393 *addrp = addr; 2394 2395 if (fdopen(dev, 0, S_IFCHR, NULL)) 2396 panic("fd: mountroot: fdopen"); 2397 2398 offset = 0; 2399 2400 for (;;) { 2401 bp->b_dev = dev; 2402 bp->b_error = 0; 2403 bp->b_resid = 0; 2404 bp->b_proc = NULL; 2405 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2406 bp->b_blkno = btodb(offset); 2407 bp->b_bcount = DEV_BSIZE; 2408 bp->b_data = addr; 2409 fdstrategy(bp); 2410 while ((bp->b_flags & B_DONE) == 0) { 2411 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2412 } 2413 if (bp->b_error) 2414 panic("fd: mountroot: fdread error %d", bp->b_error); 2415 2416 if (bp->b_resid != 0) 2417 break; 2418 2419 addr += DEV_BSIZE; 2420 offset += DEV_BSIZE; 2421 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2422 break; 2423 } 2424 (void)fdclose(dev, 0, S_IFCHR, NULL); 2425 *sizep = offset; 2426 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2427 return (0); 2428 } 2429 #endif 2430
Indexes created Fri Oct 03 02:09:57 GMT 2025