fd.c revision 1.80
1 /* $NetBSD: fd.c,v 1.80 2000/04/07 16:58:55 thorpej 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) 1993, 1994, 1995 Charles M. Hannum. 41 * Copyright (c) 1995 Paul Kranenburg. 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Don Ahn. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)fd.c 7.4 (Berkeley) 5/25/91 77 */ 78 79 #include "opt_ddb.h" 80 #include "opt_md.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/callout.h> 85 #include <sys/kernel.h> 86 #include <sys/file.h> 87 #include <sys/ioctl.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/dkstat.h> 91 #include <sys/disk.h> 92 #include <sys/fdio.h> 93 #include <sys/buf.h> 94 #include <sys/malloc.h> 95 #include <sys/proc.h> 96 #include <sys/uio.h> 97 #include <sys/stat.h> 98 #include <sys/syslog.h> 99 #include <sys/queue.h> 100 #include <sys/conf.h> 101 102 #include <dev/cons.h> 103 104 #include <vm/vm.h> 105 106 #include <uvm/uvm_extern.h> 107 108 #include <machine/cpu.h> 109 #include <machine/autoconf.h> 110 #include <machine/conf.h> 111 112 #include <sparc/sparc/auxreg.h> 113 #include <sparc/dev/fdreg.h> 114 #include <sparc/dev/fdvar.h> 115 116 #define FDUNIT(dev) (minor(dev) / 8) 117 #define FDTYPE(dev) (minor(dev) % 8) 118 119 /* XXX misuse a flag to identify format operation */ 120 #define B_FORMAT B_XXX 121 122 #define FD_DEBUG 123 #ifdef FD_DEBUG 124 int fdc_debug = 0; 125 #endif 126 127 enum fdc_state { 128 DEVIDLE = 0, 129 MOTORWAIT, /* 1 */ 130 DOSEEK, /* 2 */ 131 SEEKWAIT, /* 3 */ 132 SEEKTIMEDOUT, /* 4 */ 133 SEEKCOMPLETE, /* 5 */ 134 DOIO, /* 6 */ 135 IOCOMPLETE, /* 7 */ 136 IOTIMEDOUT, /* 8 */ 137 IOCLEANUPWAIT, /* 9 */ 138 IOCLEANUPTIMEDOUT,/*10 */ 139 DORESET, /* 11 */ 140 RESETCOMPLETE, /* 12 */ 141 RESETTIMEDOUT, /* 13 */ 142 DORECAL, /* 14 */ 143 RECALWAIT, /* 15 */ 144 RECALTIMEDOUT, /* 16 */ 145 RECALCOMPLETE, /* 17 */ 146 }; 147 148 /* software state, per controller */ 149 struct fdc_softc { 150 struct device sc_dev; /* boilerplate */ 151 bus_space_tag_t sc_bustag; 152 153 struct callout sc_timo_ch; /* timeout callout */ 154 struct callout sc_intr_ch; /* pseudo-intr callout */ 155 156 struct fd_softc *sc_fd[4]; /* pointers to children */ 157 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 158 enum fdc_state sc_state; 159 int sc_flags; 160 #define FDC_82077 0x01 161 #define FDC_NEEDHEADSETTLE 0x02 162 #define FDC_EIS 0x04 163 #define FDC_NEEDMOTORWAIT 0x08 164 int sc_errors; /* number of retries so far */ 165 int sc_overruns; /* number of DMA overruns */ 166 int sc_cfg; /* current configuration */ 167 struct fdcio sc_io; 168 #define sc_handle sc_io.fdcio_handle 169 #define sc_reg_msr sc_io.fdcio_reg_msr 170 #define sc_reg_fifo sc_io.fdcio_reg_fifo 171 #define sc_reg_dor sc_io.fdcio_reg_dor 172 #define sc_reg_drs sc_io.fdcio_reg_msr 173 #define sc_itask sc_io.fdcio_itask 174 #define sc_istatus sc_io.fdcio_istatus 175 #define sc_data sc_io.fdcio_data 176 #define sc_tc sc_io.fdcio_tc 177 #define sc_nstat sc_io.fdcio_nstat 178 #define sc_status sc_io.fdcio_status 179 #define sc_intrcnt sc_io.fdcio_intrcnt 180 }; 181 182 #undef FDC_C_HANDLER 183 #ifndef FDC_C_HANDLER 184 extern struct fdcio *fdciop; 185 #endif 186 187 /* controller driver configuration */ 188 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 189 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 190 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 191 void fdcattach_obio __P((struct device *, struct device *, void *)); 192 193 int fdcattach __P((struct fdc_softc *, int)); 194 195 struct cfattach fdc_mainbus_ca = { 196 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 197 }; 198 struct cfattach fdc_obio_ca = { 199 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 200 }; 201 202 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 203 204 /* 205 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 206 * we tell them apart. 207 */ 208 struct fd_type { 209 int sectrac; /* sectors per track */ 210 int heads; /* number of heads */ 211 int seccyl; /* sectors per cylinder */ 212 int secsize; /* size code for sectors */ 213 int datalen; /* data len when secsize = 0 */ 214 int steprate; /* step rate and head unload time */ 215 int gap1; /* gap len between sectors */ 216 int gap2; /* formatting gap */ 217 int cylinders; /* total num of cylinders */ 218 int size; /* size of disk in sectors */ 219 int step; /* steps per cylinder */ 220 int rate; /* transfer speed code */ 221 int fillbyte; /* format fill byte */ 222 int interleave; /* interleave factor (formatting) */ 223 char *name; 224 }; 225 226 /* The order of entries in the following table is important -- BEWARE! */ 227 struct fd_type fd_types[] = { 228 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 229 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 230 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 231 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 232 }; 233 234 /* software state, per disk (with up to 4 disks per ctlr) */ 235 struct fd_softc { 236 struct device sc_dv; /* generic device info */ 237 struct disk sc_dk; /* generic disk info */ 238 239 struct fd_type *sc_deftype; /* default type descriptor */ 240 struct fd_type *sc_type; /* current type descriptor */ 241 242 struct callout sc_motoron_ch; 243 struct callout sc_motoroff_ch; 244 245 daddr_t sc_blkno; /* starting block number */ 246 int sc_bcount; /* byte count left */ 247 int sc_skip; /* bytes already transferred */ 248 int sc_nblks; /* number of blocks currently tranferring */ 249 int sc_nbytes; /* number of bytes currently tranferring */ 250 251 int sc_drive; /* physical unit number */ 252 int sc_flags; 253 #define FD_OPEN 0x01 /* it's open */ 254 #define FD_MOTOR 0x02 /* motor should be on */ 255 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 256 int sc_cylin; /* where we think the head is */ 257 int sc_opts; /* user-set options */ 258 259 void *sc_sdhook; /* shutdownhook cookie */ 260 261 TAILQ_ENTRY(fd_softc) sc_drivechain; 262 int sc_ops; /* I/O ops since last switch */ 263 struct buf_queue sc_q; /* pending I/O requests */ 264 int sc_active; /* number of active I/O requests */ 265 }; 266 267 /* floppy driver configuration */ 268 int fdmatch __P((struct device *, struct cfdata *, void *)); 269 void fdattach __P((struct device *, struct device *, void *)); 270 271 struct cfattach fd_ca = { 272 sizeof(struct fd_softc), fdmatch, fdattach 273 }; 274 275 extern struct cfdriver fd_cd; 276 277 void fdgetdisklabel __P((dev_t)); 278 int fd_get_parms __P((struct fd_softc *)); 279 void fdstrategy __P((struct buf *)); 280 void fdstart __P((struct fd_softc *)); 281 int fdprint __P((void *, const char *)); 282 283 struct dkdriver fddkdriver = { fdstrategy }; 284 285 struct fd_type *fd_nvtotype __P((char *, int, int)); 286 void fd_set_motor __P((struct fdc_softc *fdc)); 287 void fd_motor_off __P((void *arg)); 288 void fd_motor_on __P((void *arg)); 289 int fdcresult __P((struct fdc_softc *fdc)); 290 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 291 void fdcstart __P((struct fdc_softc *fdc)); 292 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 293 void fdc_reset __P((struct fdc_softc *fdc)); 294 void fdctimeout __P((void *arg)); 295 void fdcpseudointr __P((void *arg)); 296 #ifdef FDC_C_HANDLER 297 int fdc_c_hwintr __P((void *)); 298 #else 299 void fdchwintr __P((void)); 300 #endif 301 int fdcswintr __P((void *)); 302 int fdcstate __P((struct fdc_softc *)); 303 void fdcretry __P((struct fdc_softc *fdc)); 304 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 305 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 306 void fd_do_eject __P((struct fd_softc *)); 307 void fd_mountroot_hook __P((struct device *)); 308 static int fdconf __P((struct fdc_softc *)); 309 static void establish_chip_type __P(( 310 struct fdc_softc *, 311 bus_space_tag_t, 312 bus_type_t, 313 bus_addr_t, 314 bus_size_t, 315 bus_space_handle_t)); 316 317 318 #if PIL_FDSOFT == 4 319 #define IE_FDSOFT IE_L4 320 #else 321 #error 4 322 #endif 323 324 #ifdef FDC_C_HANDLER 325 #if defined(SUN4M) 326 #define FD_SET_SWINTR do { \ 327 if (CPU_ISSUN4M) \ 328 raise(0, PIL_FDSOFT); \ 329 else \ 330 ienab_bis(IE_L4); \ 331 } while(0) 332 #else 333 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 334 #endif /* defined(SUN4M) */ 335 #endif /* FDC_C_HANDLER */ 336 337 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 338 339 int 340 fdcmatch_mainbus(parent, match, aux) 341 struct device *parent; 342 struct cfdata *match; 343 void *aux; 344 { 345 struct mainbus_attach_args *ma = aux; 346 347 /* 348 * Floppy controller is on mainbus on sun4c. 349 */ 350 if (!CPU_ISSUN4C) 351 return (0); 352 353 /* sun4c PROMs call the controller "fd" */ 354 if (strcmp("fd", ma->ma_name) != 0) 355 return (0); 356 357 return (bus_space_probe(ma->ma_bustag, 358 ma->ma_iospace, 359 ma->ma_paddr, 360 1, /* probe size */ 361 0, /* offset */ 362 0, /* flags */ 363 NULL, NULL)); 364 } 365 366 int 367 fdcmatch_obio(parent, match, aux) 368 struct device *parent; 369 struct cfdata *match; 370 void *aux; 371 { 372 union obio_attach_args *uoba = aux; 373 struct sbus_attach_args *sa; 374 375 /* 376 * Floppy controller is on obio on sun4m. 377 */ 378 if (uoba->uoba_isobio4 != 0) 379 return (0); 380 381 sa = &uoba->uoba_sbus; 382 383 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 384 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 385 return (0); 386 387 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 388 1, /* probe size */ 389 0, /* offset */ 390 0, /* flags */ 391 NULL, NULL)); 392 } 393 394 static void 395 establish_chip_type(fdc, tag, type, addr, size, handle) 396 struct fdc_softc *fdc; 397 bus_space_tag_t tag; 398 bus_type_t type; 399 bus_addr_t addr; 400 bus_size_t size; 401 bus_space_handle_t handle; 402 { 403 u_int8_t v; 404 405 /* 406 * This hack from Chris Torek: apparently DOR really 407 * addresses MSR/DRS on a 82072. 408 * We used to rely on the VERSION command to tell the 409 * difference (which did not work). 410 */ 411 412 /* First, check the size of the register bank */ 413 if (size < 8) 414 /* It isn't a 82077 */ 415 return; 416 417 /* Then probe the DOR register offset */ 418 if (bus_space_probe(tag, type, addr, 419 1, /* probe size */ 420 FDREG77_DOR, /* offset */ 421 0, /* flags */ 422 NULL, NULL) == 0) { 423 424 /* It isn't a 82077 */ 425 return; 426 } 427 428 v = bus_space_read_1(tag, handle, FDREG77_DOR); 429 if (v == NE7_RQM) { 430 /* 431 * Value in DOR looks like it's really MSR 432 */ 433 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 434 v = bus_space_read_1(tag, handle, FDREG77_DOR); 435 if (v == NE7_RQM) { 436 /* 437 * The value in the DOR didn't stick; 438 * it isn't a 82077 439 */ 440 return; 441 } 442 } 443 444 fdc->sc_flags |= FDC_82077; 445 } 446 447 /* 448 * Arguments passed between fdcattach and fdprobe. 449 */ 450 struct fdc_attach_args { 451 int fa_drive; 452 struct fd_type *fa_deftype; 453 }; 454 455 /* 456 * Print the location of a disk drive (called just before attaching the 457 * the drive). If `fdc' is not NULL, the drive was found but was not 458 * in the system config file; print the drive name as well. 459 * Return QUIET (config_find ignores this if the device was configured) to 460 * avoid printing `fdN not configured' messages. 461 */ 462 int 463 fdprint(aux, fdc) 464 void *aux; 465 const char *fdc; 466 { 467 register struct fdc_attach_args *fa = aux; 468 469 if (!fdc) 470 printf(" drive %d", fa->fa_drive); 471 return (QUIET); 472 } 473 474 /* 475 * Configure several parameters and features on the FDC. 476 * Return 0 on success. 477 */ 478 static int 479 fdconf(fdc) 480 struct fdc_softc *fdc; 481 { 482 int vroom; 483 484 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 485 return (-1); 486 487 /* 488 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 489 * the PROM thinks is appropriate. 490 */ 491 if ((vroom = fdc->sc_status[7]) == 0) 492 vroom = 0x64; 493 494 /* Configure controller to use FIFO and Implied Seek */ 495 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 496 return (-1); 497 if (fdc_wrfifo(fdc, vroom) != 0) 498 return (-1); 499 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 500 return (-1); 501 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 502 return (-1); 503 /* No result phase for the NE7CMD_CFG command */ 504 505 if ((fdc->sc_flags & FDC_82077) != 0) { 506 /* Lock configuration across soft resets. */ 507 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 508 fdcresult(fdc) != 1) { 509 #ifdef DEBUG 510 printf("fdconf: CFGLOCK failed"); 511 #endif 512 return (-1); 513 } 514 } 515 516 return (0); 517 #if 0 518 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 519 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 520 if (fdc_debug) 521 printf("[version cmd]"); 522 } 523 #endif 524 } 525 526 void 527 fdcattach_mainbus(parent, self, aux) 528 struct device *parent, *self; 529 void *aux; 530 { 531 struct fdc_softc *fdc = (void *)self; 532 struct mainbus_attach_args *ma = aux; 533 534 fdc->sc_bustag = ma->ma_bustag; 535 536 if (bus_space_map2( 537 ma->ma_bustag, 538 ma->ma_iospace, 539 ma->ma_paddr, 540 ma->ma_size, 541 BUS_SPACE_MAP_LINEAR, 542 0, 543 &fdc->sc_handle) != 0) { 544 printf("%s: cannot map registers\n", self->dv_xname); 545 return; 546 } 547 548 establish_chip_type(fdc, 549 ma->ma_bustag, 550 ma->ma_iospace, 551 ma->ma_paddr, 552 ma->ma_size, 553 fdc->sc_handle); 554 555 if (fdcattach(fdc, ma->ma_pri) != 0) 556 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 557 } 558 559 void 560 fdcattach_obio(parent, self, aux) 561 struct device *parent, *self; 562 void *aux; 563 { 564 struct fdc_softc *fdc = (void *)self; 565 union obio_attach_args *uoba = aux; 566 struct sbus_attach_args *sa = &uoba->uoba_sbus; 567 568 if (sa->sa_nintr == 0) { 569 printf(": no interrupt line configured\n"); 570 return; 571 } 572 573 fdc->sc_bustag = sa->sa_bustag; 574 575 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 576 sa->sa_offset, 577 sa->sa_size, 578 BUS_SPACE_MAP_LINEAR, 579 0, 580 &fdc->sc_handle) != 0) { 581 printf("%s: cannot map control registers\n", 582 self->dv_xname); 583 return; 584 } 585 586 establish_chip_type(fdc, 587 sa->sa_bustag, 588 sa->sa_slot, 589 sa->sa_offset, 590 sa->sa_size, 591 fdc->sc_handle); 592 593 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 594 printf(": no drives attached\n"); 595 return; 596 } 597 598 if (fdcattach(fdc, sa->sa_pri) != 0) 599 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 600 } 601 602 int 603 fdcattach(fdc, pri) 604 struct fdc_softc *fdc; 605 int pri; 606 { 607 struct fdc_attach_args fa; 608 int drive_attached; 609 char code; 610 611 callout_init(&fdc->sc_timo_ch); 612 callout_init(&fdc->sc_intr_ch); 613 614 fdc->sc_state = DEVIDLE; 615 fdc->sc_itask = FDC_ITASK_NONE; 616 fdc->sc_istatus = FDC_ISTATUS_NONE; 617 fdc->sc_flags |= FDC_EIS; 618 TAILQ_INIT(&fdc->sc_drives); 619 620 if ((fdc->sc_flags & FDC_82077) != 0) { 621 fdc->sc_reg_msr = FDREG77_MSR; 622 fdc->sc_reg_fifo = FDREG77_FIFO; 623 fdc->sc_reg_dor = FDREG77_DOR; 624 code = '7'; 625 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 626 } else { 627 fdc->sc_reg_msr = FDREG72_MSR; 628 fdc->sc_reg_fifo = FDREG72_FIFO; 629 fdc->sc_reg_dor = 0; 630 code = '2'; 631 } 632 633 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 634 635 /* 636 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 637 * Note: CFG_EFIFO is active-low, initial threshold value: 8 638 */ 639 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 640 if (fdconf(fdc) != 0) { 641 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 642 return (-1); 643 } 644 645 #ifdef FDC_C_HANDLER 646 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 647 fdc_c_hwintr, fdc); 648 #else 649 fdciop = &fdc->sc_io; 650 (void)bus_intr_establish(fdc->sc_bustag, pri, 651 BUS_INTR_ESTABLISH_FASTTRAP, 652 (int (*) __P((void *)))fdchwintr, NULL); 653 #endif 654 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 655 BUS_INTR_ESTABLISH_SOFTINTR, 656 fdcswintr, fdc); 657 658 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 659 660 /* physical limit: four drives per controller. */ 661 drive_attached = 0; 662 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 663 fa.fa_deftype = NULL; /* unknown */ 664 fa.fa_deftype = &fd_types[0]; /* XXX */ 665 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 666 drive_attached = 1; 667 } 668 669 if (drive_attached == 0) { 670 /* XXX - dis-establish interrupts here */ 671 /* return (-1); */ 672 } 673 674 return (0); 675 } 676 677 int 678 fdmatch(parent, match, aux) 679 struct device *parent; 680 struct cfdata *match; 681 void *aux; 682 { 683 struct fdc_softc *fdc = (void *)parent; 684 bus_space_tag_t t = fdc->sc_bustag; 685 bus_space_handle_t h = fdc->sc_handle; 686 struct fdc_attach_args *fa = aux; 687 int drive = fa->fa_drive; 688 int n, ok; 689 690 if (drive > 0) 691 /* XXX - for now, punt on more than one drive */ 692 return (0); 693 694 if ((fdc->sc_flags & FDC_82077) != 0) { 695 /* select drive and turn on motor */ 696 bus_space_write_1(t, h, fdc->sc_reg_dor, 697 drive | FDO_FRST | FDO_MOEN(drive)); 698 /* wait for motor to spin up */ 699 delay(250000); 700 } else { 701 auxregbisc(AUXIO4C_FDS, 0); 702 } 703 fdc->sc_nstat = 0; 704 fdc_wrfifo(fdc, NE7CMD_RECAL); 705 fdc_wrfifo(fdc, drive); 706 707 /* Wait for recalibration to complete */ 708 for (n = 0; n < 10000; n++) { 709 u_int8_t v; 710 711 delay(1000); 712 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 713 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 714 /* wait a bit longer till device *really* is ready */ 715 delay(100000); 716 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 717 break; 718 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 719 /* 720 * Got `invalid command'; we interpret it 721 * to mean that the re-calibrate hasn't in 722 * fact finished yet 723 */ 724 continue; 725 break; 726 } 727 } 728 n = fdc->sc_nstat; 729 #ifdef FD_DEBUG 730 if (fdc_debug) { 731 int i; 732 printf("fdprobe: %d stati:", n); 733 for (i = 0; i < n; i++) 734 printf(" 0x%x", fdc->sc_status[i]); 735 printf("\n"); 736 } 737 #endif 738 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 739 740 /* turn off motor */ 741 if ((fdc->sc_flags & FDC_82077) != 0) { 742 /* deselect drive and turn motor off */ 743 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 744 } else { 745 auxregbisc(0, AUXIO4C_FDS); 746 } 747 748 return (ok); 749 } 750 751 /* 752 * Controller is working, and drive responded. Attach it. 753 */ 754 void 755 fdattach(parent, self, aux) 756 struct device *parent, *self; 757 void *aux; 758 { 759 struct fdc_softc *fdc = (void *)parent; 760 struct fd_softc *fd = (void *)self; 761 struct fdc_attach_args *fa = aux; 762 struct fd_type *type = fa->fa_deftype; 763 int drive = fa->fa_drive; 764 765 callout_init(&fd->sc_motoron_ch); 766 callout_init(&fd->sc_motoroff_ch); 767 768 /* XXX Allow `flags' to override device type? */ 769 770 if (type) 771 printf(": %s %d cyl, %d head, %d sec\n", type->name, 772 type->cylinders, type->heads, type->sectrac); 773 else 774 printf(": density unknown\n"); 775 776 BUFQ_INIT(&fd->sc_q); 777 fd->sc_cylin = -1; 778 fd->sc_drive = drive; 779 fd->sc_deftype = type; 780 fdc->sc_fd[drive] = fd; 781 782 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 783 fdc_wrfifo(fdc, type->steprate); 784 /* XXX head load time == 6ms */ 785 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 786 787 /* 788 * Initialize and attach the disk structure. 789 */ 790 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 791 fd->sc_dk.dk_driver = &fddkdriver; 792 disk_attach(&fd->sc_dk); 793 794 /* 795 * Establish a mountroot_hook anyway in case we booted 796 * with RB_ASKNAME and get selected as the boot device. 797 */ 798 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 799 800 /* Make sure the drive motor gets turned off at shutdown time. */ 801 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 802 803 /* XXX Need to do some more fiddling with sc_dk. */ 804 dk_establish(&fd->sc_dk, &fd->sc_dv); 805 } 806 807 __inline struct fd_type * 808 fd_dev_to_type(fd, dev) 809 struct fd_softc *fd; 810 dev_t dev; 811 { 812 int type = FDTYPE(dev); 813 814 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 815 return (NULL); 816 return (type ? &fd_types[type - 1] : fd->sc_deftype); 817 } 818 819 void 820 fdstrategy(bp) 821 register struct buf *bp; /* IO operation to perform */ 822 { 823 struct fd_softc *fd; 824 int unit = FDUNIT(bp->b_dev); 825 int sz; 826 int s; 827 828 /* Valid unit, controller, and request? */ 829 if (unit >= fd_cd.cd_ndevs || 830 (fd = fd_cd.cd_devs[unit]) == 0 || 831 bp->b_blkno < 0 || 832 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 833 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 834 (bp->b_flags & B_FORMAT) == 0)) { 835 bp->b_error = EINVAL; 836 goto bad; 837 } 838 839 /* If it's a null transfer, return immediately. */ 840 if (bp->b_bcount == 0) 841 goto done; 842 843 sz = howmany(bp->b_bcount, DEV_BSIZE); 844 845 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 846 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 847 - bp->b_blkno; 848 if (sz == 0) { 849 /* If exactly at end of disk, return EOF. */ 850 bp->b_resid = bp->b_bcount; 851 goto done; 852 } 853 if (sz < 0) { 854 /* If past end of disk, return EINVAL. */ 855 bp->b_error = EINVAL; 856 goto bad; 857 } 858 /* Otherwise, truncate request. */ 859 bp->b_bcount = sz << DEV_BSHIFT; 860 } 861 862 bp->b_rawblkno = bp->b_blkno; 863 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 864 (FD_BSIZE(fd) * fd->sc_type->seccyl); 865 866 #ifdef FD_DEBUG 867 if (fdc_debug > 1) 868 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 869 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 870 #endif 871 872 /* Queue transfer on drive, activate drive and controller if idle. */ 873 s = splbio(); 874 disksort_cylinder(&fd->sc_q, bp); 875 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 876 if (fd->sc_active == 0) 877 fdstart(fd); 878 #ifdef DIAGNOSTIC 879 else { 880 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 881 if (fdc->sc_state == DEVIDLE) { 882 printf("fdstrategy: controller inactive\n"); 883 fdcstart(fdc); 884 } 885 } 886 #endif 887 splx(s); 888 return; 889 890 bad: 891 bp->b_flags |= B_ERROR; 892 done: 893 /* Toss transfer; we're done early. */ 894 biodone(bp); 895 } 896 897 void 898 fdstart(fd) 899 struct fd_softc *fd; 900 { 901 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 902 int active = fdc->sc_drives.tqh_first != 0; 903 904 /* Link into controller queue. */ 905 fd->sc_active = 1; 906 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 907 908 /* If controller not already active, start it. */ 909 if (!active) 910 fdcstart(fdc); 911 } 912 913 void 914 fdfinish(fd, bp) 915 struct fd_softc *fd; 916 struct buf *bp; 917 { 918 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 919 920 /* 921 * Move this drive to the end of the queue to give others a `fair' 922 * chance. We only force a switch if N operations are completed while 923 * another drive is waiting to be serviced, since there is a long motor 924 * startup delay whenever we switch. 925 */ 926 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 927 fd->sc_ops = 0; 928 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 929 if (BUFQ_NEXT(bp) != NULL) { 930 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 931 } else 932 fd->sc_active = 0; 933 } 934 bp->b_resid = fd->sc_bcount; 935 fd->sc_skip = 0; 936 BUFQ_REMOVE(&fd->sc_q, bp); 937 938 biodone(bp); 939 /* turn off motor 5s from now */ 940 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 941 fdc->sc_state = DEVIDLE; 942 } 943 944 void 945 fdc_reset(fdc) 946 struct fdc_softc *fdc; 947 { 948 bus_space_tag_t t = fdc->sc_bustag; 949 bus_space_handle_t h = fdc->sc_handle; 950 951 if ((fdc->sc_flags & FDC_82077) != 0) { 952 bus_space_write_1(t, h, fdc->sc_reg_dor, 953 FDO_FDMAEN | FDO_MOEN(0)); 954 } 955 956 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 957 delay(10); 958 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 959 960 if ((fdc->sc_flags & FDC_82077) != 0) { 961 bus_space_write_1(t, h, fdc->sc_reg_dor, 962 FDO_FRST | FDO_FDMAEN | FDO_DS); 963 } 964 #ifdef FD_DEBUG 965 if (fdc_debug) 966 printf("fdc reset\n"); 967 #endif 968 } 969 970 void 971 fd_set_motor(fdc) 972 struct fdc_softc *fdc; 973 { 974 struct fd_softc *fd; 975 u_char status; 976 int n; 977 978 if ((fdc->sc_flags & FDC_82077) != 0) { 979 status = FDO_FRST | FDO_FDMAEN; 980 if ((fd = fdc->sc_drives.tqh_first) != NULL) 981 status |= fd->sc_drive; 982 983 for (n = 0; n < 4; n++) 984 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 985 status |= FDO_MOEN(n); 986 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 987 fdc->sc_reg_dor, status); 988 } else { 989 990 for (n = 0; n < 4; n++) { 991 if ((fd = fdc->sc_fd[n]) != NULL && 992 (fd->sc_flags & FD_MOTOR) != 0) { 993 auxregbisc(AUXIO4C_FDS, 0); 994 return; 995 } 996 } 997 auxregbisc(0, AUXIO4C_FDS); 998 } 999 } 1000 1001 void 1002 fd_motor_off(arg) 1003 void *arg; 1004 { 1005 struct fd_softc *fd = arg; 1006 int s; 1007 1008 s = splbio(); 1009 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1010 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 1011 splx(s); 1012 } 1013 1014 void 1015 fd_motor_on(arg) 1016 void *arg; 1017 { 1018 struct fd_softc *fd = arg; 1019 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1020 int s; 1021 1022 s = splbio(); 1023 fd->sc_flags &= ~FD_MOTOR_WAIT; 1024 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1025 (void) fdcstate(fdc); 1026 splx(s); 1027 } 1028 1029 /* 1030 * Get status bytes off the FDC after a command has finished 1031 * Returns the number of status bytes read; -1 on error. 1032 * The return value is also stored in `sc_nstat'. 1033 */ 1034 int 1035 fdcresult(fdc) 1036 struct fdc_softc *fdc; 1037 { 1038 bus_space_tag_t t = fdc->sc_bustag; 1039 bus_space_handle_t h = fdc->sc_handle; 1040 int j, n = 0; 1041 1042 for (j = 10000; j; j--) { 1043 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1044 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1045 if (v == NE7_RQM) 1046 return (fdc->sc_nstat = n); 1047 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1048 if (n >= sizeof(fdc->sc_status)) { 1049 log(LOG_ERR, "fdcresult: overrun\n"); 1050 return (-1); 1051 } 1052 fdc->sc_status[n++] = 1053 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1054 } else 1055 delay(1); 1056 } 1057 1058 log(LOG_ERR, "fdcresult: timeout\n"); 1059 return (fdc->sc_nstat = -1); 1060 } 1061 1062 /* 1063 * Write a command byte to the FDC. 1064 * Returns 0 on success; -1 on failure (i.e. timeout) 1065 */ 1066 int 1067 fdc_wrfifo(fdc, x) 1068 struct fdc_softc *fdc; 1069 u_int8_t x; 1070 { 1071 bus_space_tag_t t = fdc->sc_bustag; 1072 bus_space_handle_t h = fdc->sc_handle; 1073 int i; 1074 1075 for (i = 100000; i-- > 0;) { 1076 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1077 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1078 /* The chip is ready */ 1079 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1080 return (0); 1081 } 1082 delay(1); 1083 } 1084 return (-1); 1085 } 1086 1087 int 1088 fdopen(dev, flags, fmt, p) 1089 dev_t dev; 1090 int flags, fmt; 1091 struct proc *p; 1092 { 1093 int unit, pmask; 1094 struct fd_softc *fd; 1095 struct fd_type *type; 1096 1097 unit = FDUNIT(dev); 1098 if (unit >= fd_cd.cd_ndevs) 1099 return (ENXIO); 1100 fd = fd_cd.cd_devs[unit]; 1101 if (fd == NULL) 1102 return (ENXIO); 1103 type = fd_dev_to_type(fd, dev); 1104 if (type == NULL) 1105 return (ENXIO); 1106 1107 if ((fd->sc_flags & FD_OPEN) != 0 && 1108 fd->sc_type != type) 1109 return (EBUSY); 1110 1111 fd->sc_type = type; 1112 fd->sc_cylin = -1; 1113 fd->sc_flags |= FD_OPEN; 1114 1115 /* 1116 * Only update the disklabel if we're not open anywhere else. 1117 */ 1118 if (fd->sc_dk.dk_openmask == 0) 1119 fdgetdisklabel(dev); 1120 1121 pmask = (1 << DISKPART(dev)); 1122 1123 switch (fmt) { 1124 case S_IFCHR: 1125 fd->sc_dk.dk_copenmask |= pmask; 1126 break; 1127 1128 case S_IFBLK: 1129 fd->sc_dk.dk_bopenmask |= pmask; 1130 break; 1131 } 1132 fd->sc_dk.dk_openmask = 1133 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1134 1135 return (0); 1136 } 1137 1138 int 1139 fdclose(dev, flags, fmt, p) 1140 dev_t dev; 1141 int flags, fmt; 1142 struct proc *p; 1143 { 1144 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1145 int pmask = (1 << DISKPART(dev)); 1146 1147 fd->sc_flags &= ~FD_OPEN; 1148 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1149 1150 switch (fmt) { 1151 case S_IFCHR: 1152 fd->sc_dk.dk_copenmask &= ~pmask; 1153 break; 1154 1155 case S_IFBLK: 1156 fd->sc_dk.dk_bopenmask &= ~pmask; 1157 break; 1158 } 1159 fd->sc_dk.dk_openmask = 1160 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1161 1162 return (0); 1163 } 1164 1165 int 1166 fdread(dev, uio, flag) 1167 dev_t dev; 1168 struct uio *uio; 1169 int flag; 1170 { 1171 1172 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1173 } 1174 1175 int 1176 fdwrite(dev, uio, flag) 1177 dev_t dev; 1178 struct uio *uio; 1179 int flag; 1180 { 1181 1182 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1183 } 1184 1185 void 1186 fdcstart(fdc) 1187 struct fdc_softc *fdc; 1188 { 1189 1190 #ifdef DIAGNOSTIC 1191 /* only got here if controller's drive queue was inactive; should 1192 be in idle state */ 1193 if (fdc->sc_state != DEVIDLE) { 1194 printf("fdcstart: not idle\n"); 1195 return; 1196 } 1197 #endif 1198 (void) fdcstate(fdc); 1199 } 1200 1201 void 1202 fdcstatus(fdc, s) 1203 struct fdc_softc *fdc; 1204 char *s; 1205 { 1206 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1207 int n; 1208 char bits[64]; 1209 1210 /* Just print last status */ 1211 n = fdc->sc_nstat; 1212 1213 #if 0 1214 /* 1215 * A 82072 seems to return <invalid command> on 1216 * gratuitous Sense Interrupt commands. 1217 */ 1218 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1219 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1220 (void) fdcresult(fdc); 1221 n = 2; 1222 } 1223 #endif 1224 1225 printf("%s: %s: state %d", 1226 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1227 1228 switch (n) { 1229 case 0: 1230 printf("\n"); 1231 break; 1232 case 2: 1233 printf(" (st0 %s cyl %d)\n", 1234 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1235 bits, sizeof(bits)), fdc->sc_status[1]); 1236 break; 1237 case 7: 1238 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1239 NE7_ST0BITS, bits, sizeof(bits))); 1240 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1241 NE7_ST1BITS, bits, sizeof(bits))); 1242 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1243 NE7_ST2BITS, bits, sizeof(bits))); 1244 printf(" cyl %d head %d sec %d)\n", 1245 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1246 break; 1247 #ifdef DIAGNOSTIC 1248 default: 1249 printf(" fdcstatus: weird size: %d\n", n); 1250 break; 1251 #endif 1252 } 1253 } 1254 1255 void 1256 fdctimeout(arg) 1257 void *arg; 1258 { 1259 struct fdc_softc *fdc = arg; 1260 struct fd_softc *fd; 1261 int s; 1262 1263 s = splbio(); 1264 fd = fdc->sc_drives.tqh_first; 1265 if (fd == NULL) { 1266 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1267 fdc->sc_dev.dv_xname, 1268 fdc->sc_state, fdc->sc_istatus); 1269 fdc->sc_state = DEVIDLE; 1270 goto out; 1271 } 1272 1273 if (BUFQ_FIRST(&fd->sc_q) != NULL) 1274 fdc->sc_state++; 1275 else 1276 fdc->sc_state = DEVIDLE; 1277 1278 (void) fdcstate(fdc); 1279 out: 1280 splx(s); 1281 1282 } 1283 1284 void 1285 fdcpseudointr(arg) 1286 void *arg; 1287 { 1288 struct fdc_softc *fdc = arg; 1289 int s; 1290 1291 /* Just ensure it has the right spl. */ 1292 s = splbio(); 1293 (void) fdcstate(fdc); 1294 splx(s); 1295 } 1296 1297 1298 #ifdef FDC_C_HANDLER 1299 /* 1300 * hardware interrupt entry point: must be converted to `fast' 1301 * (in-window) handler. 1302 */ 1303 int 1304 fdc_c_hwintr(arg) 1305 void *arg; 1306 { 1307 struct fdc_softc *fdc = arg; 1308 bus_space_tag_t t = fdc->sc_bustag; 1309 bus_space_handle_t h = fdc->sc_handle; 1310 1311 switch (fdc->sc_itask) { 1312 case FDC_ITASK_NONE: 1313 return (0); 1314 case FDC_ITASK_SENSI: 1315 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1316 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1317 else 1318 fdc->sc_istatus = FDC_ISTATUS_DONE; 1319 FD_SET_SWINTR; 1320 return (1); 1321 case FDC_ITASK_DMA: 1322 /* Proceed with pseudo-dma below */ 1323 break; 1324 default: 1325 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1326 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1327 FD_SET_SWINTR; 1328 return (1); 1329 } 1330 1331 /* 1332 * Pseudo DMA in progress 1333 */ 1334 for (;;) { 1335 u_int8_t msr; 1336 1337 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1338 1339 if ((msr & NE7_RQM) == 0) 1340 /* That's all this round */ 1341 break; 1342 1343 if ((msr & NE7_NDM) == 0) { 1344 fdcresult(fdc); 1345 fdc->sc_istatus = FDC_ISTATUS_DONE; 1346 FD_SET_SWINTR; 1347 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1348 break; 1349 } 1350 1351 /* Another byte can be transferred */ 1352 if ((msr & NE7_DIO) != 0) 1353 *fdc->sc_data = 1354 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1355 else 1356 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1357 *fdc->sc_data); 1358 1359 fdc->sc_data++; 1360 if (--fdc->sc_tc == 0) { 1361 fdc->sc_istatus = FDC_ISTATUS_DONE; 1362 FTC_FLIP; 1363 fdcresult(fdc); 1364 FD_SET_SWINTR; 1365 break; 1366 } 1367 } 1368 return (1); 1369 } 1370 #endif 1371 1372 int 1373 fdcswintr(arg) 1374 void *arg; 1375 { 1376 struct fdc_softc *fdc = arg; 1377 int s; 1378 1379 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1380 /* This (software) interrupt is not for us */ 1381 return (0); 1382 1383 switch (fdc->sc_istatus) { 1384 case FDC_ISTATUS_ERROR: 1385 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1386 break; 1387 case FDC_ISTATUS_SPURIOUS: 1388 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1389 break; 1390 } 1391 1392 s = splbio(); 1393 fdcstate(fdc); 1394 splx(s); 1395 return (1); 1396 } 1397 1398 int 1399 fdcstate(fdc) 1400 struct fdc_softc *fdc; 1401 { 1402 #define st0 fdc->sc_status[0] 1403 #define st1 fdc->sc_status[1] 1404 #define cyl fdc->sc_status[1] 1405 #define FDC_WRFIFO(fdc, c) do { \ 1406 if (fdc_wrfifo(fdc, (c))) { \ 1407 goto xxx; \ 1408 } \ 1409 } while(0) 1410 1411 struct fd_softc *fd; 1412 struct buf *bp; 1413 int read, head, sec, nblks; 1414 struct fd_type *type; 1415 struct ne7_fd_formb *finfo = NULL; 1416 1417 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1418 fdc->sc_state = DORESET; 1419 1420 /* Clear I task/status field */ 1421 fdc->sc_istatus = FDC_ISTATUS_NONE; 1422 fdc->sc_itask = FDC_ITASK_NONE; 1423 1424 loop: 1425 /* Is there a drive for the controller to do a transfer with? */ 1426 fd = fdc->sc_drives.tqh_first; 1427 if (fd == NULL) { 1428 fdc->sc_state = DEVIDLE; 1429 return (0); 1430 } 1431 1432 /* Is there a transfer to this drive? If not, deactivate drive. */ 1433 bp = BUFQ_FIRST(&fd->sc_q); 1434 if (bp == NULL) { 1435 fd->sc_ops = 0; 1436 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1437 fd->sc_active = 0; 1438 goto loop; 1439 } 1440 1441 if (bp->b_flags & B_FORMAT) 1442 finfo = (struct ne7_fd_formb *)bp->b_data; 1443 1444 switch (fdc->sc_state) { 1445 case DEVIDLE: 1446 fdc->sc_errors = 0; 1447 fd->sc_skip = 0; 1448 fd->sc_bcount = bp->b_bcount; 1449 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1450 callout_stop(&fd->sc_motoroff_ch); 1451 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1452 fdc->sc_state = MOTORWAIT; 1453 return (1); 1454 } 1455 if ((fd->sc_flags & FD_MOTOR) == 0) { 1456 /* Turn on the motor, being careful about pairing. */ 1457 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1458 if (ofd && ofd->sc_flags & FD_MOTOR) { 1459 callout_stop(&ofd->sc_motoroff_ch); 1460 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1461 } 1462 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1463 fd_set_motor(fdc); 1464 fdc->sc_state = MOTORWAIT; 1465 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1466 /* Allow .25s for motor to stabilize. */ 1467 callout_reset(&fd->sc_motoron_ch, hz / 4, 1468 fd_motor_on, fd); 1469 } else { 1470 fd->sc_flags &= ~FD_MOTOR_WAIT; 1471 goto loop; 1472 } 1473 return (1); 1474 } 1475 /* Make sure the right drive is selected. */ 1476 fd_set_motor(fdc); 1477 1478 /*FALLTHROUGH*/ 1479 case DOSEEK: 1480 doseek: 1481 if ((fdc->sc_flags & FDC_EIS) && 1482 (bp->b_flags & B_FORMAT) == 0) { 1483 fd->sc_cylin = bp->b_cylinder; 1484 /* We use implied seek */ 1485 goto doio; 1486 } 1487 1488 if (fd->sc_cylin == bp->b_cylinder) 1489 goto doio; 1490 1491 fd->sc_cylin = -1; 1492 fdc->sc_state = SEEKWAIT; 1493 fdc->sc_nstat = 0; 1494 1495 fd->sc_dk.dk_seek++; 1496 1497 disk_busy(&fd->sc_dk); 1498 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1499 1500 /* specify command */ 1501 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1502 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1503 /* XXX head load time == 6ms */ 1504 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1505 1506 fdc->sc_itask = FDC_ITASK_SENSEI; 1507 /* seek function */ 1508 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1509 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1510 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1511 return (1); 1512 1513 case DOIO: 1514 doio: 1515 if (finfo != NULL) 1516 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1517 (char *)finfo; 1518 type = fd->sc_type; 1519 sec = fd->sc_blkno % type->seccyl; 1520 nblks = type->seccyl - sec; 1521 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1522 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1523 fd->sc_nblks = nblks; 1524 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1525 head = sec / type->sectrac; 1526 sec -= head * type->sectrac; 1527 #ifdef DIAGNOSTIC 1528 {int block; 1529 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1530 if (block != fd->sc_blkno) { 1531 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1532 #ifdef DDB 1533 Debugger(); 1534 #endif 1535 }} 1536 #endif 1537 read = bp->b_flags & B_READ; 1538 1539 /* Setup for pseudo DMA */ 1540 fdc->sc_data = bp->b_data + fd->sc_skip; 1541 fdc->sc_tc = fd->sc_nbytes; 1542 1543 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1544 fdc->sc_reg_drs, type->rate); 1545 #ifdef FD_DEBUG 1546 if (fdc_debug > 1) 1547 printf("fdcstate: doio: %s drive %d " 1548 "track %d head %d sec %d nblks %d\n", 1549 finfo ? "format" : 1550 (read ? "read" : "write"), 1551 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1552 #endif 1553 fdc->sc_state = IOCOMPLETE; 1554 fdc->sc_itask = FDC_ITASK_DMA; 1555 fdc->sc_nstat = 0; 1556 1557 disk_busy(&fd->sc_dk); 1558 1559 /* allow 3 seconds for operation */ 1560 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1561 1562 if (finfo != NULL) { 1563 /* formatting */ 1564 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1565 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1566 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1567 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1568 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1569 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1570 } else { 1571 if (read) 1572 FDC_WRFIFO(fdc, NE7CMD_READ); 1573 else 1574 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1575 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1576 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1577 FDC_WRFIFO(fdc, head); 1578 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1579 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1580 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1581 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1582 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1583 } 1584 1585 return (1); /* will return later */ 1586 1587 case SEEKWAIT: 1588 callout_stop(&fdc->sc_timo_ch); 1589 fdc->sc_state = SEEKCOMPLETE; 1590 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1591 /* allow 1/50 second for heads to settle */ 1592 callout_reset(&fdc->sc_intr_ch, hz / 50, 1593 fdcpseudointr, fdc); 1594 return (1); /* will return later */ 1595 } 1596 /*FALLTHROUGH*/ 1597 case SEEKCOMPLETE: 1598 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1599 1600 /* Make sure seek really happened. */ 1601 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1602 cyl != bp->b_cylinder * fd->sc_type->step) { 1603 #ifdef FD_DEBUG 1604 if (fdc_debug) 1605 fdcstatus(fdc, "seek failed"); 1606 #endif 1607 fdcretry(fdc); 1608 goto loop; 1609 } 1610 fd->sc_cylin = bp->b_cylinder; 1611 goto doio; 1612 1613 case IOTIMEDOUT: 1614 /* 1615 * Try to abort the I/O operation without resetting 1616 * the chip first. Poke TC and arrange to pick up 1617 * the timed out I/O command's status. 1618 */ 1619 fdc->sc_itask = FDC_ITASK_RESULT; 1620 fdc->sc_state = IOCLEANUPWAIT; 1621 fdc->sc_nstat = 0; 1622 /* 1/10 second should be enough */ 1623 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1624 FTC_FLIP; 1625 return (1); 1626 1627 case IOCLEANUPTIMEDOUT: 1628 case SEEKTIMEDOUT: 1629 case RECALTIMEDOUT: 1630 case RESETTIMEDOUT: 1631 fdcstatus(fdc, "timeout"); 1632 1633 /* All other timeouts always roll through to a chip reset */ 1634 fdcretry(fdc); 1635 1636 /* Force reset, no matter what fdcretry() says */ 1637 fdc->sc_state = DORESET; 1638 goto loop; 1639 1640 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1641 callout_stop(&fdc->sc_timo_ch); 1642 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1643 fdcretry(fdc); 1644 goto loop; 1645 1646 case IOCOMPLETE: /* IO DONE, post-analyze */ 1647 callout_stop(&fdc->sc_timo_ch); 1648 1649 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1650 1651 if (fdc->sc_nstat != 7 || st1 != 0 || 1652 ((st0 & 0xf8) != 0 && 1653 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1654 #ifdef FD_DEBUG 1655 if (fdc_debug) { 1656 fdcstatus(fdc, 1657 bp->b_flags & B_READ 1658 ? "read failed" : "write failed"); 1659 printf("blkno %d nblks %d nstat %d tc %d\n", 1660 fd->sc_blkno, fd->sc_nblks, 1661 fdc->sc_nstat, fdc->sc_tc); 1662 } 1663 #endif 1664 if (fdc->sc_nstat == 7 && 1665 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1666 1667 /* 1668 * Silently retry overruns if no other 1669 * error bit is set. Adjust threshold. 1670 */ 1671 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1672 if (thr < 15) { 1673 thr++; 1674 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1675 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1676 #ifdef FD_DEBUG 1677 if (fdc_debug) 1678 printf("fdc: %d -> threshold\n", thr); 1679 #endif 1680 fdconf(fdc); 1681 fdc->sc_overruns = 0; 1682 } 1683 if (++fdc->sc_overruns < 3) { 1684 fdc->sc_state = DOIO; 1685 goto loop; 1686 } 1687 } 1688 fdcretry(fdc); 1689 goto loop; 1690 } 1691 if (fdc->sc_errors) { 1692 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1693 fd->sc_skip / FD_BSIZE(fd), 1694 (struct disklabel *)NULL); 1695 printf("\n"); 1696 fdc->sc_errors = 0; 1697 } else { 1698 if (--fdc->sc_overruns < -20) { 1699 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1700 if (thr > 0) { 1701 thr--; 1702 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1703 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1704 #ifdef FD_DEBUG 1705 if (fdc_debug) 1706 printf("fdc: %d -> threshold\n", thr); 1707 #endif 1708 fdconf(fdc); 1709 } 1710 fdc->sc_overruns = 0; 1711 } 1712 } 1713 fd->sc_blkno += fd->sc_nblks; 1714 fd->sc_skip += fd->sc_nbytes; 1715 fd->sc_bcount -= fd->sc_nbytes; 1716 if (finfo == NULL && fd->sc_bcount > 0) { 1717 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1718 goto doseek; 1719 } 1720 fdfinish(fd, bp); 1721 goto loop; 1722 1723 case DORESET: 1724 /* try a reset, keep motor on */ 1725 fd_set_motor(fdc); 1726 delay(100); 1727 fdc->sc_nstat = 0; 1728 fdc->sc_itask = FDC_ITASK_SENSEI; 1729 fdc->sc_state = RESETCOMPLETE; 1730 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1731 fdc_reset(fdc); 1732 return (1); /* will return later */ 1733 1734 case RESETCOMPLETE: 1735 callout_stop(&fdc->sc_timo_ch); 1736 fdconf(fdc); 1737 1738 /* FALLTHROUGH */ 1739 case DORECAL: 1740 fdc->sc_state = RECALWAIT; 1741 fdc->sc_itask = FDC_ITASK_SENSEI; 1742 fdc->sc_nstat = 0; 1743 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1744 /* recalibrate function */ 1745 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1746 FDC_WRFIFO(fdc, fd->sc_drive); 1747 return (1); /* will return later */ 1748 1749 case RECALWAIT: 1750 callout_stop(&fdc->sc_timo_ch); 1751 fdc->sc_state = RECALCOMPLETE; 1752 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1753 /* allow 1/30 second for heads to settle */ 1754 callout_reset(&fdc->sc_intr_ch, hz / 30, 1755 fdcpseudointr, fdc); 1756 return (1); /* will return later */ 1757 } 1758 1759 case RECALCOMPLETE: 1760 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1761 #ifdef FD_DEBUG 1762 if (fdc_debug) 1763 fdcstatus(fdc, "recalibrate failed"); 1764 #endif 1765 fdcretry(fdc); 1766 goto loop; 1767 } 1768 fd->sc_cylin = 0; 1769 goto doseek; 1770 1771 case MOTORWAIT: 1772 if (fd->sc_flags & FD_MOTOR_WAIT) 1773 return (1); /* time's not up yet */ 1774 goto doseek; 1775 1776 default: 1777 fdcstatus(fdc, "stray interrupt"); 1778 return (1); 1779 } 1780 #ifdef DIAGNOSTIC 1781 panic("fdcintr: impossible"); 1782 #endif 1783 1784 xxx: 1785 /* 1786 * We get here if the chip locks up in FDC_WRFIFO() 1787 * Cancel any operation and schedule a reset 1788 */ 1789 callout_stop(&fdc->sc_timo_ch); 1790 fdcretry(fdc); 1791 (fdc)->sc_state = DORESET; 1792 goto loop; 1793 1794 #undef st0 1795 #undef st1 1796 #undef cyl 1797 } 1798 1799 void 1800 fdcretry(fdc) 1801 struct fdc_softc *fdc; 1802 { 1803 struct fd_softc *fd; 1804 struct buf *bp; 1805 int error = EIO; 1806 1807 fd = fdc->sc_drives.tqh_first; 1808 bp = BUFQ_FIRST(&fd->sc_q); 1809 1810 fdc->sc_overruns = 0; 1811 if (fd->sc_opts & FDOPT_NORETRY) 1812 goto fail; 1813 1814 switch (fdc->sc_errors) { 1815 case 0: 1816 if (fdc->sc_nstat == 7 && 1817 (fdc->sc_status[0] & 0xd8) == 0x40 && 1818 (fdc->sc_status[1] & 0x2) == 0x2) { 1819 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1820 error = EROFS; 1821 goto failsilent; 1822 } 1823 /* try again */ 1824 fdc->sc_state = 1825 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1826 break; 1827 1828 case 1: case 2: case 3: 1829 /* didn't work; try recalibrating */ 1830 fdc->sc_state = DORECAL; 1831 break; 1832 1833 case 4: 1834 if (fdc->sc_nstat == 7 && 1835 fdc->sc_status[0] == 0 && 1836 fdc->sc_status[1] == 0 && 1837 fdc->sc_status[2] == 0) { 1838 /* 1839 * We've retried a few times and we've got 1840 * valid status and all three status bytes 1841 * are zero. Assume this condition is the 1842 * result of no disk loaded into the drive. 1843 */ 1844 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1845 error = ENODEV; 1846 goto failsilent; 1847 } 1848 1849 /* still no go; reset the bastard */ 1850 fdc->sc_state = DORESET; 1851 break; 1852 1853 default: 1854 fail: 1855 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1856 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1857 fd->sc_skip / FD_BSIZE(fd), 1858 (struct disklabel *)NULL); 1859 printf("\n"); 1860 fdcstatus(fdc, "controller status"); 1861 } 1862 1863 failsilent: 1864 bp->b_flags |= B_ERROR; 1865 bp->b_error = error; 1866 fdfinish(fd, bp); 1867 } 1868 fdc->sc_errors++; 1869 } 1870 1871 int 1872 fdsize(dev) 1873 dev_t dev; 1874 { 1875 1876 /* Swapping to floppies would not make sense. */ 1877 return (-1); 1878 } 1879 1880 int 1881 fddump(dev, blkno, va, size) 1882 dev_t dev; 1883 daddr_t blkno; 1884 caddr_t va; 1885 size_t size; 1886 { 1887 1888 /* Not implemented. */ 1889 return (EINVAL); 1890 } 1891 1892 int 1893 fdioctl(dev, cmd, addr, flag, p) 1894 dev_t dev; 1895 u_long cmd; 1896 caddr_t addr; 1897 int flag; 1898 struct proc *p; 1899 { 1900 struct fd_softc *fd; 1901 struct fdc_softc *fdc; 1902 struct fdformat_parms *form_parms; 1903 struct fdformat_cmd *form_cmd; 1904 struct ne7_fd_formb fd_formb; 1905 int il[FD_MAX_NSEC + 1]; 1906 int unit; 1907 int i, j; 1908 int error; 1909 1910 unit = FDUNIT(dev); 1911 if (unit >= fd_cd.cd_ndevs) 1912 return (ENXIO); 1913 1914 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1915 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1916 1917 switch (cmd) { 1918 case DIOCGDINFO: 1919 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1920 return 0; 1921 1922 case DIOCWLABEL: 1923 if ((flag & FWRITE) == 0) 1924 return EBADF; 1925 /* XXX do something */ 1926 return (0); 1927 1928 case DIOCWDINFO: 1929 if ((flag & FWRITE) == 0) 1930 return (EBADF); 1931 1932 error = setdisklabel(fd->sc_dk.dk_label, 1933 (struct disklabel *)addr, 0, 1934 fd->sc_dk.dk_cpulabel); 1935 if (error) 1936 return (error); 1937 1938 error = writedisklabel(dev, fdstrategy, 1939 fd->sc_dk.dk_label, 1940 fd->sc_dk.dk_cpulabel); 1941 return (error); 1942 1943 case DIOCLOCK: 1944 /* 1945 * Nothing to do here, really. 1946 */ 1947 return (0); 1948 1949 case DIOCEJECT: 1950 if (*(int *)addr == 0) { 1951 int part = DISKPART(dev); 1952 /* 1953 * Don't force eject: check that we are the only 1954 * partition open. If so, unlock it. 1955 */ 1956 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1957 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1958 fd->sc_dk.dk_openmask) { 1959 return (EBUSY); 1960 } 1961 } 1962 /* FALLTHROUGH */ 1963 case ODIOCEJECT: 1964 fd_do_eject(fd); 1965 return (0); 1966 1967 case FDIOCGETFORMAT: 1968 form_parms = (struct fdformat_parms *)addr; 1969 form_parms->fdformat_version = FDFORMAT_VERSION; 1970 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1971 form_parms->ncyl = fd->sc_type->cylinders; 1972 form_parms->nspt = fd->sc_type->sectrac; 1973 form_parms->ntrk = fd->sc_type->heads; 1974 form_parms->stepspercyl = fd->sc_type->step; 1975 form_parms->gaplen = fd->sc_type->gap2; 1976 form_parms->fillbyte = fd->sc_type->fillbyte; 1977 form_parms->interleave = fd->sc_type->interleave; 1978 switch (fd->sc_type->rate) { 1979 case FDC_500KBPS: 1980 form_parms->xfer_rate = 500 * 1024; 1981 break; 1982 case FDC_300KBPS: 1983 form_parms->xfer_rate = 300 * 1024; 1984 break; 1985 case FDC_250KBPS: 1986 form_parms->xfer_rate = 250 * 1024; 1987 break; 1988 default: 1989 return (EINVAL); 1990 } 1991 return (0); 1992 1993 case FDIOCSETFORMAT: 1994 if ((flag & FWRITE) == 0) 1995 return (EBADF); /* must be opened for writing */ 1996 1997 form_parms = (struct fdformat_parms *)addr; 1998 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1999 return (EINVAL);/* wrong version of formatting prog */ 2000 2001 i = form_parms->nbps >> 7; 2002 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2003 i & ~(1 << (ffs(i)-1))) 2004 /* not a power-of-two multiple of 128 */ 2005 return (EINVAL); 2006 2007 switch (form_parms->xfer_rate) { 2008 case 500 * 1024: 2009 fd->sc_type->rate = FDC_500KBPS; 2010 break; 2011 case 300 * 1024: 2012 fd->sc_type->rate = FDC_300KBPS; 2013 break; 2014 case 250 * 1024: 2015 fd->sc_type->rate = FDC_250KBPS; 2016 break; 2017 default: 2018 return (EINVAL); 2019 } 2020 2021 if (form_parms->nspt > FD_MAX_NSEC || 2022 form_parms->fillbyte > 0xff || 2023 form_parms->interleave > 0xff) 2024 return EINVAL; 2025 fd->sc_type->sectrac = form_parms->nspt; 2026 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2027 return EINVAL; 2028 fd->sc_type->heads = form_parms->ntrk; 2029 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2030 fd->sc_type->secsize = ffs(i)-1; 2031 fd->sc_type->gap2 = form_parms->gaplen; 2032 fd->sc_type->cylinders = form_parms->ncyl; 2033 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2034 form_parms->nbps / DEV_BSIZE; 2035 fd->sc_type->step = form_parms->stepspercyl; 2036 fd->sc_type->fillbyte = form_parms->fillbyte; 2037 fd->sc_type->interleave = form_parms->interleave; 2038 return (0); 2039 2040 case FDIOCFORMAT_TRACK: 2041 if((flag & FWRITE) == 0) 2042 /* must be opened for writing */ 2043 return (EBADF); 2044 form_cmd = (struct fdformat_cmd *)addr; 2045 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2046 /* wrong version of formatting prog */ 2047 return (EINVAL); 2048 2049 if (form_cmd->head >= fd->sc_type->heads || 2050 form_cmd->cylinder >= fd->sc_type->cylinders) { 2051 return (EINVAL); 2052 } 2053 2054 fd_formb.head = form_cmd->head; 2055 fd_formb.cyl = form_cmd->cylinder; 2056 fd_formb.transfer_rate = fd->sc_type->rate; 2057 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2058 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2059 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2060 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2061 2062 bzero(il, sizeof il); 2063 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2064 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2065 j++; 2066 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2067 j += fd->sc_type->interleave; 2068 } 2069 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2070 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2071 fd_formb.fd_formb_headno(i) = form_cmd->head; 2072 fd_formb.fd_formb_secno(i) = il[i+1]; 2073 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2074 } 2075 2076 return fdformat(dev, &fd_formb, p); 2077 2078 case FDIOCGETOPTS: /* get drive options */ 2079 *(int *)addr = fd->sc_opts; 2080 return (0); 2081 2082 case FDIOCSETOPTS: /* set drive options */ 2083 fd->sc_opts = *(int *)addr; 2084 return (0); 2085 2086 #ifdef FD_DEBUG 2087 case _IO('f', 100): 2088 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2089 fdcresult(fdc); 2090 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2091 for (i = 0; i < fdc->sc_nstat; i++) 2092 printf(" 0x%x", fdc->sc_status[i]); 2093 printf(">\n"); 2094 return (0); 2095 2096 case _IOW('f', 101, int): 2097 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2098 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2099 fdconf(fdc); 2100 return (0); 2101 2102 case _IO('f', 102): 2103 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2104 fdcresult(fdc); 2105 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2106 for (i=0; i< fdc->sc_nstat; i++) 2107 printf(" 0x%x", fdc->sc_status[i]); 2108 printf(">\n"); 2109 return (0); 2110 #endif 2111 default: 2112 return (ENOTTY); 2113 } 2114 2115 #ifdef DIAGNOSTIC 2116 panic("fdioctl: impossible"); 2117 #endif 2118 } 2119 2120 int 2121 fdformat(dev, finfo, p) 2122 dev_t dev; 2123 struct ne7_fd_formb *finfo; 2124 struct proc *p; 2125 { 2126 int rv = 0, s; 2127 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2128 struct fd_type *type = fd->sc_type; 2129 struct buf *bp; 2130 2131 /* set up a buffer header for fdstrategy() */ 2132 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2133 if (bp == 0) 2134 return (ENOBUFS); 2135 2136 PHOLD(p); 2137 bzero((void *)bp, sizeof(struct buf)); 2138 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2139 bp->b_proc = p; 2140 bp->b_dev = dev; 2141 2142 /* 2143 * Calculate a fake blkno, so fdstrategy() would initiate a 2144 * seek to the requested cylinder. 2145 */ 2146 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2147 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2148 / DEV_BSIZE; 2149 2150 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2151 bp->b_data = (caddr_t)finfo; 2152 2153 #ifdef FD_DEBUG 2154 if (fdc_debug) { 2155 int i; 2156 2157 printf("fdformat: blkno 0x%x count %ld\n", 2158 bp->b_blkno, bp->b_bcount); 2159 2160 printf("\tcyl:\t%d\n", finfo->cyl); 2161 printf("\thead:\t%d\n", finfo->head); 2162 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2163 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2164 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2165 printf("\ttrack data:"); 2166 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2167 printf(" [c%d h%d s%d]", 2168 finfo->fd_formb_cylno(i), 2169 finfo->fd_formb_headno(i), 2170 finfo->fd_formb_secno(i) ); 2171 if (finfo->fd_formb_secsize(i) != 2) 2172 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2173 } 2174 printf("\n"); 2175 } 2176 #endif 2177 2178 /* now do the format */ 2179 fdstrategy(bp); 2180 2181 /* ...and wait for it to complete */ 2182 s = splbio(); 2183 while (!(bp->b_flags & B_DONE)) { 2184 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2185 if (rv == EWOULDBLOCK) 2186 break; 2187 } 2188 splx(s); 2189 2190 if (rv == EWOULDBLOCK) { 2191 /* timed out */ 2192 rv = EIO; 2193 biodone(bp); 2194 } 2195 if (bp->b_flags & B_ERROR) { 2196 rv = bp->b_error; 2197 } 2198 PRELE(p); 2199 free(bp, M_TEMP); 2200 return (rv); 2201 } 2202 2203 void 2204 fdgetdisklabel(dev) 2205 dev_t dev; 2206 { 2207 int unit = FDUNIT(dev), i; 2208 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2209 struct disklabel *lp = fd->sc_dk.dk_label; 2210 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2211 2212 bzero(lp, sizeof(struct disklabel)); 2213 bzero(lp, sizeof(struct cpu_disklabel)); 2214 2215 lp->d_type = DTYPE_FLOPPY; 2216 lp->d_secsize = FD_BSIZE(fd); 2217 lp->d_secpercyl = fd->sc_type->seccyl; 2218 lp->d_nsectors = fd->sc_type->sectrac; 2219 lp->d_ncylinders = fd->sc_type->cylinders; 2220 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2221 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2222 lp->d_rpm = 3600; /* XXX like it matters... */ 2223 2224 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2225 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2226 lp->d_interleave = 1; 2227 2228 lp->d_partitions[RAW_PART].p_offset = 0; 2229 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2230 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2231 lp->d_npartitions = RAW_PART + 1; 2232 2233 lp->d_magic = DISKMAGIC; 2234 lp->d_magic2 = DISKMAGIC; 2235 lp->d_checksum = dkcksum(lp); 2236 2237 /* 2238 * Call the generic disklabel extraction routine. If there's 2239 * not a label there, fake it. 2240 */ 2241 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2242 strncpy(lp->d_packname, "default label", 2243 sizeof(lp->d_packname)); 2244 /* 2245 * Reset the partition info; it might have gotten 2246 * trashed in readdisklabel(). 2247 * 2248 * XXX Why do we have to do this? readdisklabel() 2249 * should be safe... 2250 */ 2251 for (i = 0; i < MAXPARTITIONS; ++i) { 2252 lp->d_partitions[i].p_offset = 0; 2253 if (i == RAW_PART) { 2254 lp->d_partitions[i].p_size = 2255 lp->d_secpercyl * lp->d_ncylinders; 2256 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2257 } else { 2258 lp->d_partitions[i].p_size = 0; 2259 lp->d_partitions[i].p_fstype = FS_UNUSED; 2260 } 2261 } 2262 lp->d_npartitions = RAW_PART + 1; 2263 } 2264 } 2265 2266 void 2267 fd_do_eject(fd) 2268 struct fd_softc *fd; 2269 { 2270 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2271 2272 if (CPU_ISSUN4C) { 2273 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2274 delay(10); 2275 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2276 return; 2277 } 2278 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2279 bus_space_tag_t t = fdc->sc_bustag; 2280 bus_space_handle_t h = fdc->sc_handle; 2281 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2282 2283 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2284 delay(10); 2285 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2286 return; 2287 } 2288 } 2289 2290 #ifdef MEMORY_DISK_HOOKS 2291 int fd_read_md_image __P((size_t *, caddr_t *)); 2292 #endif 2293 2294 /* ARGSUSED */ 2295 void 2296 fd_mountroot_hook(dev) 2297 struct device *dev; 2298 { 2299 int c; 2300 2301 fd_do_eject((struct fd_softc *)dev); 2302 printf("Insert filesystem floppy and press return."); 2303 for (;;) { 2304 c = cngetc(); 2305 if ((c == '\r') || (c == '\n')) { 2306 printf("\n"); 2307 break; 2308 } 2309 } 2310 } 2311 2312 #ifdef MEMORY_DISK_HOOKS 2313 2314 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2315 2316 int 2317 fd_read_md_image(sizep, addrp) 2318 size_t *sizep; 2319 caddr_t *addrp; 2320 { 2321 struct buf buf, *bp = &buf; 2322 dev_t dev; 2323 off_t offset; 2324 caddr_t addr; 2325 2326 dev = makedev(54,0); /* XXX */ 2327 2328 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2329 *addrp = addr; 2330 2331 if (fdopen(dev, 0, S_IFCHR, NULL)) 2332 panic("fd: mountroot: fdopen"); 2333 2334 offset = 0; 2335 2336 for (;;) { 2337 bp->b_dev = dev; 2338 bp->b_error = 0; 2339 bp->b_resid = 0; 2340 bp->b_proc = NULL; 2341 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2342 bp->b_blkno = btodb(offset); 2343 bp->b_bcount = DEV_BSIZE; 2344 bp->b_data = addr; 2345 fdstrategy(bp); 2346 while ((bp->b_flags & B_DONE) == 0) { 2347 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2348 } 2349 if (bp->b_error) 2350 panic("fd: mountroot: fdread error %d", bp->b_error); 2351 2352 if (bp->b_resid != 0) 2353 break; 2354 2355 addr += DEV_BSIZE; 2356 offset += DEV_BSIZE; 2357 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2358 break; 2359 } 2360 (void)fdclose(dev, 0, S_IFCHR, NULL); 2361 *sizep = offset; 2362 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2363 return (0); 2364 } 2365 #endif 2366
Indexes created Fri Oct 03 02:09:57 GMT 2025