fd.c revision 1.81
1 /* $NetBSD: fd.c,v 1.81 2000/05/16 05:45:49 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 } 803 804 __inline struct fd_type * 805 fd_dev_to_type(fd, dev) 806 struct fd_softc *fd; 807 dev_t dev; 808 { 809 int type = FDTYPE(dev); 810 811 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 812 return (NULL); 813 return (type ? &fd_types[type - 1] : fd->sc_deftype); 814 } 815 816 void 817 fdstrategy(bp) 818 register struct buf *bp; /* IO operation to perform */ 819 { 820 struct fd_softc *fd; 821 int unit = FDUNIT(bp->b_dev); 822 int sz; 823 int s; 824 825 /* Valid unit, controller, and request? */ 826 if (unit >= fd_cd.cd_ndevs || 827 (fd = fd_cd.cd_devs[unit]) == 0 || 828 bp->b_blkno < 0 || 829 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 830 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 831 (bp->b_flags & B_FORMAT) == 0)) { 832 bp->b_error = EINVAL; 833 goto bad; 834 } 835 836 /* If it's a null transfer, return immediately. */ 837 if (bp->b_bcount == 0) 838 goto done; 839 840 sz = howmany(bp->b_bcount, DEV_BSIZE); 841 842 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 843 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 844 - bp->b_blkno; 845 if (sz == 0) { 846 /* If exactly at end of disk, return EOF. */ 847 bp->b_resid = bp->b_bcount; 848 goto done; 849 } 850 if (sz < 0) { 851 /* If past end of disk, return EINVAL. */ 852 bp->b_error = EINVAL; 853 goto bad; 854 } 855 /* Otherwise, truncate request. */ 856 bp->b_bcount = sz << DEV_BSHIFT; 857 } 858 859 bp->b_rawblkno = bp->b_blkno; 860 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 861 (FD_BSIZE(fd) * fd->sc_type->seccyl); 862 863 #ifdef FD_DEBUG 864 if (fdc_debug > 1) 865 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 866 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 867 #endif 868 869 /* Queue transfer on drive, activate drive and controller if idle. */ 870 s = splbio(); 871 disksort_cylinder(&fd->sc_q, bp); 872 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 873 if (fd->sc_active == 0) 874 fdstart(fd); 875 #ifdef DIAGNOSTIC 876 else { 877 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 878 if (fdc->sc_state == DEVIDLE) { 879 printf("fdstrategy: controller inactive\n"); 880 fdcstart(fdc); 881 } 882 } 883 #endif 884 splx(s); 885 return; 886 887 bad: 888 bp->b_flags |= B_ERROR; 889 done: 890 /* Toss transfer; we're done early. */ 891 biodone(bp); 892 } 893 894 void 895 fdstart(fd) 896 struct fd_softc *fd; 897 { 898 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 899 int active = fdc->sc_drives.tqh_first != 0; 900 901 /* Link into controller queue. */ 902 fd->sc_active = 1; 903 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 904 905 /* If controller not already active, start it. */ 906 if (!active) 907 fdcstart(fdc); 908 } 909 910 void 911 fdfinish(fd, bp) 912 struct fd_softc *fd; 913 struct buf *bp; 914 { 915 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 916 917 /* 918 * Move this drive to the end of the queue to give others a `fair' 919 * chance. We only force a switch if N operations are completed while 920 * another drive is waiting to be serviced, since there is a long motor 921 * startup delay whenever we switch. 922 */ 923 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 924 fd->sc_ops = 0; 925 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 926 if (BUFQ_NEXT(bp) != NULL) { 927 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 928 } else 929 fd->sc_active = 0; 930 } 931 bp->b_resid = fd->sc_bcount; 932 fd->sc_skip = 0; 933 BUFQ_REMOVE(&fd->sc_q, bp); 934 935 biodone(bp); 936 /* turn off motor 5s from now */ 937 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 938 fdc->sc_state = DEVIDLE; 939 } 940 941 void 942 fdc_reset(fdc) 943 struct fdc_softc *fdc; 944 { 945 bus_space_tag_t t = fdc->sc_bustag; 946 bus_space_handle_t h = fdc->sc_handle; 947 948 if ((fdc->sc_flags & FDC_82077) != 0) { 949 bus_space_write_1(t, h, fdc->sc_reg_dor, 950 FDO_FDMAEN | FDO_MOEN(0)); 951 } 952 953 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 954 delay(10); 955 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 956 957 if ((fdc->sc_flags & FDC_82077) != 0) { 958 bus_space_write_1(t, h, fdc->sc_reg_dor, 959 FDO_FRST | FDO_FDMAEN | FDO_DS); 960 } 961 #ifdef FD_DEBUG 962 if (fdc_debug) 963 printf("fdc reset\n"); 964 #endif 965 } 966 967 void 968 fd_set_motor(fdc) 969 struct fdc_softc *fdc; 970 { 971 struct fd_softc *fd; 972 u_char status; 973 int n; 974 975 if ((fdc->sc_flags & FDC_82077) != 0) { 976 status = FDO_FRST | FDO_FDMAEN; 977 if ((fd = fdc->sc_drives.tqh_first) != NULL) 978 status |= fd->sc_drive; 979 980 for (n = 0; n < 4; n++) 981 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 982 status |= FDO_MOEN(n); 983 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 984 fdc->sc_reg_dor, status); 985 } else { 986 987 for (n = 0; n < 4; n++) { 988 if ((fd = fdc->sc_fd[n]) != NULL && 989 (fd->sc_flags & FD_MOTOR) != 0) { 990 auxregbisc(AUXIO4C_FDS, 0); 991 return; 992 } 993 } 994 auxregbisc(0, AUXIO4C_FDS); 995 } 996 } 997 998 void 999 fd_motor_off(arg) 1000 void *arg; 1001 { 1002 struct fd_softc *fd = arg; 1003 int s; 1004 1005 s = splbio(); 1006 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1007 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 1008 splx(s); 1009 } 1010 1011 void 1012 fd_motor_on(arg) 1013 void *arg; 1014 { 1015 struct fd_softc *fd = arg; 1016 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1017 int s; 1018 1019 s = splbio(); 1020 fd->sc_flags &= ~FD_MOTOR_WAIT; 1021 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1022 (void) fdcstate(fdc); 1023 splx(s); 1024 } 1025 1026 /* 1027 * Get status bytes off the FDC after a command has finished 1028 * Returns the number of status bytes read; -1 on error. 1029 * The return value is also stored in `sc_nstat'. 1030 */ 1031 int 1032 fdcresult(fdc) 1033 struct fdc_softc *fdc; 1034 { 1035 bus_space_tag_t t = fdc->sc_bustag; 1036 bus_space_handle_t h = fdc->sc_handle; 1037 int j, n = 0; 1038 1039 for (j = 10000; j; j--) { 1040 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1041 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1042 if (v == NE7_RQM) 1043 return (fdc->sc_nstat = n); 1044 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1045 if (n >= sizeof(fdc->sc_status)) { 1046 log(LOG_ERR, "fdcresult: overrun\n"); 1047 return (-1); 1048 } 1049 fdc->sc_status[n++] = 1050 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1051 } else 1052 delay(1); 1053 } 1054 1055 log(LOG_ERR, "fdcresult: timeout\n"); 1056 return (fdc->sc_nstat = -1); 1057 } 1058 1059 /* 1060 * Write a command byte to the FDC. 1061 * Returns 0 on success; -1 on failure (i.e. timeout) 1062 */ 1063 int 1064 fdc_wrfifo(fdc, x) 1065 struct fdc_softc *fdc; 1066 u_int8_t x; 1067 { 1068 bus_space_tag_t t = fdc->sc_bustag; 1069 bus_space_handle_t h = fdc->sc_handle; 1070 int i; 1071 1072 for (i = 100000; i-- > 0;) { 1073 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1074 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1075 /* The chip is ready */ 1076 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1077 return (0); 1078 } 1079 delay(1); 1080 } 1081 return (-1); 1082 } 1083 1084 int 1085 fdopen(dev, flags, fmt, p) 1086 dev_t dev; 1087 int flags, fmt; 1088 struct proc *p; 1089 { 1090 int unit, pmask; 1091 struct fd_softc *fd; 1092 struct fd_type *type; 1093 1094 unit = FDUNIT(dev); 1095 if (unit >= fd_cd.cd_ndevs) 1096 return (ENXIO); 1097 fd = fd_cd.cd_devs[unit]; 1098 if (fd == NULL) 1099 return (ENXIO); 1100 type = fd_dev_to_type(fd, dev); 1101 if (type == NULL) 1102 return (ENXIO); 1103 1104 if ((fd->sc_flags & FD_OPEN) != 0 && 1105 fd->sc_type != type) 1106 return (EBUSY); 1107 1108 fd->sc_type = type; 1109 fd->sc_cylin = -1; 1110 fd->sc_flags |= FD_OPEN; 1111 1112 /* 1113 * Only update the disklabel if we're not open anywhere else. 1114 */ 1115 if (fd->sc_dk.dk_openmask == 0) 1116 fdgetdisklabel(dev); 1117 1118 pmask = (1 << DISKPART(dev)); 1119 1120 switch (fmt) { 1121 case S_IFCHR: 1122 fd->sc_dk.dk_copenmask |= pmask; 1123 break; 1124 1125 case S_IFBLK: 1126 fd->sc_dk.dk_bopenmask |= pmask; 1127 break; 1128 } 1129 fd->sc_dk.dk_openmask = 1130 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1131 1132 return (0); 1133 } 1134 1135 int 1136 fdclose(dev, flags, fmt, p) 1137 dev_t dev; 1138 int flags, fmt; 1139 struct proc *p; 1140 { 1141 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1142 int pmask = (1 << DISKPART(dev)); 1143 1144 fd->sc_flags &= ~FD_OPEN; 1145 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1146 1147 switch (fmt) { 1148 case S_IFCHR: 1149 fd->sc_dk.dk_copenmask &= ~pmask; 1150 break; 1151 1152 case S_IFBLK: 1153 fd->sc_dk.dk_bopenmask &= ~pmask; 1154 break; 1155 } 1156 fd->sc_dk.dk_openmask = 1157 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1158 1159 return (0); 1160 } 1161 1162 int 1163 fdread(dev, uio, flag) 1164 dev_t dev; 1165 struct uio *uio; 1166 int flag; 1167 { 1168 1169 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1170 } 1171 1172 int 1173 fdwrite(dev, uio, flag) 1174 dev_t dev; 1175 struct uio *uio; 1176 int flag; 1177 { 1178 1179 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1180 } 1181 1182 void 1183 fdcstart(fdc) 1184 struct fdc_softc *fdc; 1185 { 1186 1187 #ifdef DIAGNOSTIC 1188 /* only got here if controller's drive queue was inactive; should 1189 be in idle state */ 1190 if (fdc->sc_state != DEVIDLE) { 1191 printf("fdcstart: not idle\n"); 1192 return; 1193 } 1194 #endif 1195 (void) fdcstate(fdc); 1196 } 1197 1198 void 1199 fdcstatus(fdc, s) 1200 struct fdc_softc *fdc; 1201 char *s; 1202 { 1203 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1204 int n; 1205 char bits[64]; 1206 1207 /* Just print last status */ 1208 n = fdc->sc_nstat; 1209 1210 #if 0 1211 /* 1212 * A 82072 seems to return <invalid command> on 1213 * gratuitous Sense Interrupt commands. 1214 */ 1215 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1216 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1217 (void) fdcresult(fdc); 1218 n = 2; 1219 } 1220 #endif 1221 1222 printf("%s: %s: state %d", 1223 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1224 1225 switch (n) { 1226 case 0: 1227 printf("\n"); 1228 break; 1229 case 2: 1230 printf(" (st0 %s cyl %d)\n", 1231 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1232 bits, sizeof(bits)), fdc->sc_status[1]); 1233 break; 1234 case 7: 1235 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1236 NE7_ST0BITS, bits, sizeof(bits))); 1237 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1238 NE7_ST1BITS, bits, sizeof(bits))); 1239 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1240 NE7_ST2BITS, bits, sizeof(bits))); 1241 printf(" cyl %d head %d sec %d)\n", 1242 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1243 break; 1244 #ifdef DIAGNOSTIC 1245 default: 1246 printf(" fdcstatus: weird size: %d\n", n); 1247 break; 1248 #endif 1249 } 1250 } 1251 1252 void 1253 fdctimeout(arg) 1254 void *arg; 1255 { 1256 struct fdc_softc *fdc = arg; 1257 struct fd_softc *fd; 1258 int s; 1259 1260 s = splbio(); 1261 fd = fdc->sc_drives.tqh_first; 1262 if (fd == NULL) { 1263 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1264 fdc->sc_dev.dv_xname, 1265 fdc->sc_state, fdc->sc_istatus); 1266 fdc->sc_state = DEVIDLE; 1267 goto out; 1268 } 1269 1270 if (BUFQ_FIRST(&fd->sc_q) != NULL) 1271 fdc->sc_state++; 1272 else 1273 fdc->sc_state = DEVIDLE; 1274 1275 (void) fdcstate(fdc); 1276 out: 1277 splx(s); 1278 1279 } 1280 1281 void 1282 fdcpseudointr(arg) 1283 void *arg; 1284 { 1285 struct fdc_softc *fdc = arg; 1286 int s; 1287 1288 /* Just ensure it has the right spl. */ 1289 s = splbio(); 1290 (void) fdcstate(fdc); 1291 splx(s); 1292 } 1293 1294 1295 #ifdef FDC_C_HANDLER 1296 /* 1297 * hardware interrupt entry point: must be converted to `fast' 1298 * (in-window) handler. 1299 */ 1300 int 1301 fdc_c_hwintr(arg) 1302 void *arg; 1303 { 1304 struct fdc_softc *fdc = arg; 1305 bus_space_tag_t t = fdc->sc_bustag; 1306 bus_space_handle_t h = fdc->sc_handle; 1307 1308 switch (fdc->sc_itask) { 1309 case FDC_ITASK_NONE: 1310 return (0); 1311 case FDC_ITASK_SENSI: 1312 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1313 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1314 else 1315 fdc->sc_istatus = FDC_ISTATUS_DONE; 1316 FD_SET_SWINTR; 1317 return (1); 1318 case FDC_ITASK_DMA: 1319 /* Proceed with pseudo-dma below */ 1320 break; 1321 default: 1322 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1323 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1324 FD_SET_SWINTR; 1325 return (1); 1326 } 1327 1328 /* 1329 * Pseudo DMA in progress 1330 */ 1331 for (;;) { 1332 u_int8_t msr; 1333 1334 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1335 1336 if ((msr & NE7_RQM) == 0) 1337 /* That's all this round */ 1338 break; 1339 1340 if ((msr & NE7_NDM) == 0) { 1341 fdcresult(fdc); 1342 fdc->sc_istatus = FDC_ISTATUS_DONE; 1343 FD_SET_SWINTR; 1344 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1345 break; 1346 } 1347 1348 /* Another byte can be transferred */ 1349 if ((msr & NE7_DIO) != 0) 1350 *fdc->sc_data = 1351 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1352 else 1353 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1354 *fdc->sc_data); 1355 1356 fdc->sc_data++; 1357 if (--fdc->sc_tc == 0) { 1358 fdc->sc_istatus = FDC_ISTATUS_DONE; 1359 FTC_FLIP; 1360 fdcresult(fdc); 1361 FD_SET_SWINTR; 1362 break; 1363 } 1364 } 1365 return (1); 1366 } 1367 #endif 1368 1369 int 1370 fdcswintr(arg) 1371 void *arg; 1372 { 1373 struct fdc_softc *fdc = arg; 1374 int s; 1375 1376 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1377 /* This (software) interrupt is not for us */ 1378 return (0); 1379 1380 switch (fdc->sc_istatus) { 1381 case FDC_ISTATUS_ERROR: 1382 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1383 break; 1384 case FDC_ISTATUS_SPURIOUS: 1385 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1386 break; 1387 } 1388 1389 s = splbio(); 1390 fdcstate(fdc); 1391 splx(s); 1392 return (1); 1393 } 1394 1395 int 1396 fdcstate(fdc) 1397 struct fdc_softc *fdc; 1398 { 1399 #define st0 fdc->sc_status[0] 1400 #define st1 fdc->sc_status[1] 1401 #define cyl fdc->sc_status[1] 1402 #define FDC_WRFIFO(fdc, c) do { \ 1403 if (fdc_wrfifo(fdc, (c))) { \ 1404 goto xxx; \ 1405 } \ 1406 } while(0) 1407 1408 struct fd_softc *fd; 1409 struct buf *bp; 1410 int read, head, sec, nblks; 1411 struct fd_type *type; 1412 struct ne7_fd_formb *finfo = NULL; 1413 1414 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1415 fdc->sc_state = DORESET; 1416 1417 /* Clear I task/status field */ 1418 fdc->sc_istatus = FDC_ISTATUS_NONE; 1419 fdc->sc_itask = FDC_ITASK_NONE; 1420 1421 loop: 1422 /* Is there a drive for the controller to do a transfer with? */ 1423 fd = fdc->sc_drives.tqh_first; 1424 if (fd == NULL) { 1425 fdc->sc_state = DEVIDLE; 1426 return (0); 1427 } 1428 1429 /* Is there a transfer to this drive? If not, deactivate drive. */ 1430 bp = BUFQ_FIRST(&fd->sc_q); 1431 if (bp == NULL) { 1432 fd->sc_ops = 0; 1433 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1434 fd->sc_active = 0; 1435 goto loop; 1436 } 1437 1438 if (bp->b_flags & B_FORMAT) 1439 finfo = (struct ne7_fd_formb *)bp->b_data; 1440 1441 switch (fdc->sc_state) { 1442 case DEVIDLE: 1443 fdc->sc_errors = 0; 1444 fd->sc_skip = 0; 1445 fd->sc_bcount = bp->b_bcount; 1446 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1447 callout_stop(&fd->sc_motoroff_ch); 1448 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1449 fdc->sc_state = MOTORWAIT; 1450 return (1); 1451 } 1452 if ((fd->sc_flags & FD_MOTOR) == 0) { 1453 /* Turn on the motor, being careful about pairing. */ 1454 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1455 if (ofd && ofd->sc_flags & FD_MOTOR) { 1456 callout_stop(&ofd->sc_motoroff_ch); 1457 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1458 } 1459 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1460 fd_set_motor(fdc); 1461 fdc->sc_state = MOTORWAIT; 1462 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1463 /* Allow .25s for motor to stabilize. */ 1464 callout_reset(&fd->sc_motoron_ch, hz / 4, 1465 fd_motor_on, fd); 1466 } else { 1467 fd->sc_flags &= ~FD_MOTOR_WAIT; 1468 goto loop; 1469 } 1470 return (1); 1471 } 1472 /* Make sure the right drive is selected. */ 1473 fd_set_motor(fdc); 1474 1475 /*FALLTHROUGH*/ 1476 case DOSEEK: 1477 doseek: 1478 if ((fdc->sc_flags & FDC_EIS) && 1479 (bp->b_flags & B_FORMAT) == 0) { 1480 fd->sc_cylin = bp->b_cylinder; 1481 /* We use implied seek */ 1482 goto doio; 1483 } 1484 1485 if (fd->sc_cylin == bp->b_cylinder) 1486 goto doio; 1487 1488 fd->sc_cylin = -1; 1489 fdc->sc_state = SEEKWAIT; 1490 fdc->sc_nstat = 0; 1491 1492 fd->sc_dk.dk_seek++; 1493 1494 disk_busy(&fd->sc_dk); 1495 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1496 1497 /* specify command */ 1498 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1499 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1500 /* XXX head load time == 6ms */ 1501 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1502 1503 fdc->sc_itask = FDC_ITASK_SENSEI; 1504 /* seek function */ 1505 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1506 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1507 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1508 return (1); 1509 1510 case DOIO: 1511 doio: 1512 if (finfo != NULL) 1513 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1514 (char *)finfo; 1515 type = fd->sc_type; 1516 sec = fd->sc_blkno % type->seccyl; 1517 nblks = type->seccyl - sec; 1518 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1519 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1520 fd->sc_nblks = nblks; 1521 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1522 head = sec / type->sectrac; 1523 sec -= head * type->sectrac; 1524 #ifdef DIAGNOSTIC 1525 {int block; 1526 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1527 if (block != fd->sc_blkno) { 1528 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1529 #ifdef DDB 1530 Debugger(); 1531 #endif 1532 }} 1533 #endif 1534 read = bp->b_flags & B_READ; 1535 1536 /* Setup for pseudo DMA */ 1537 fdc->sc_data = bp->b_data + fd->sc_skip; 1538 fdc->sc_tc = fd->sc_nbytes; 1539 1540 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1541 fdc->sc_reg_drs, type->rate); 1542 #ifdef FD_DEBUG 1543 if (fdc_debug > 1) 1544 printf("fdcstate: doio: %s drive %d " 1545 "track %d head %d sec %d nblks %d\n", 1546 finfo ? "format" : 1547 (read ? "read" : "write"), 1548 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1549 #endif 1550 fdc->sc_state = IOCOMPLETE; 1551 fdc->sc_itask = FDC_ITASK_DMA; 1552 fdc->sc_nstat = 0; 1553 1554 disk_busy(&fd->sc_dk); 1555 1556 /* allow 3 seconds for operation */ 1557 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1558 1559 if (finfo != NULL) { 1560 /* formatting */ 1561 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1562 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1563 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1564 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1565 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1566 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1567 } else { 1568 if (read) 1569 FDC_WRFIFO(fdc, NE7CMD_READ); 1570 else 1571 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1572 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1573 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1574 FDC_WRFIFO(fdc, head); 1575 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1576 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1577 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1578 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1579 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1580 } 1581 1582 return (1); /* will return later */ 1583 1584 case SEEKWAIT: 1585 callout_stop(&fdc->sc_timo_ch); 1586 fdc->sc_state = SEEKCOMPLETE; 1587 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1588 /* allow 1/50 second for heads to settle */ 1589 callout_reset(&fdc->sc_intr_ch, hz / 50, 1590 fdcpseudointr, fdc); 1591 return (1); /* will return later */ 1592 } 1593 /*FALLTHROUGH*/ 1594 case SEEKCOMPLETE: 1595 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1596 1597 /* Make sure seek really happened. */ 1598 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1599 cyl != bp->b_cylinder * fd->sc_type->step) { 1600 #ifdef FD_DEBUG 1601 if (fdc_debug) 1602 fdcstatus(fdc, "seek failed"); 1603 #endif 1604 fdcretry(fdc); 1605 goto loop; 1606 } 1607 fd->sc_cylin = bp->b_cylinder; 1608 goto doio; 1609 1610 case IOTIMEDOUT: 1611 /* 1612 * Try to abort the I/O operation without resetting 1613 * the chip first. Poke TC and arrange to pick up 1614 * the timed out I/O command's status. 1615 */ 1616 fdc->sc_itask = FDC_ITASK_RESULT; 1617 fdc->sc_state = IOCLEANUPWAIT; 1618 fdc->sc_nstat = 0; 1619 /* 1/10 second should be enough */ 1620 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1621 FTC_FLIP; 1622 return (1); 1623 1624 case IOCLEANUPTIMEDOUT: 1625 case SEEKTIMEDOUT: 1626 case RECALTIMEDOUT: 1627 case RESETTIMEDOUT: 1628 fdcstatus(fdc, "timeout"); 1629 1630 /* All other timeouts always roll through to a chip reset */ 1631 fdcretry(fdc); 1632 1633 /* Force reset, no matter what fdcretry() says */ 1634 fdc->sc_state = DORESET; 1635 goto loop; 1636 1637 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1638 callout_stop(&fdc->sc_timo_ch); 1639 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1640 fdcretry(fdc); 1641 goto loop; 1642 1643 case IOCOMPLETE: /* IO DONE, post-analyze */ 1644 callout_stop(&fdc->sc_timo_ch); 1645 1646 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1647 1648 if (fdc->sc_nstat != 7 || st1 != 0 || 1649 ((st0 & 0xf8) != 0 && 1650 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1651 #ifdef FD_DEBUG 1652 if (fdc_debug) { 1653 fdcstatus(fdc, 1654 bp->b_flags & B_READ 1655 ? "read failed" : "write failed"); 1656 printf("blkno %d nblks %d nstat %d tc %d\n", 1657 fd->sc_blkno, fd->sc_nblks, 1658 fdc->sc_nstat, fdc->sc_tc); 1659 } 1660 #endif 1661 if (fdc->sc_nstat == 7 && 1662 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1663 1664 /* 1665 * Silently retry overruns if no other 1666 * error bit is set. Adjust threshold. 1667 */ 1668 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1669 if (thr < 15) { 1670 thr++; 1671 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1672 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1673 #ifdef FD_DEBUG 1674 if (fdc_debug) 1675 printf("fdc: %d -> threshold\n", thr); 1676 #endif 1677 fdconf(fdc); 1678 fdc->sc_overruns = 0; 1679 } 1680 if (++fdc->sc_overruns < 3) { 1681 fdc->sc_state = DOIO; 1682 goto loop; 1683 } 1684 } 1685 fdcretry(fdc); 1686 goto loop; 1687 } 1688 if (fdc->sc_errors) { 1689 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1690 fd->sc_skip / FD_BSIZE(fd), 1691 (struct disklabel *)NULL); 1692 printf("\n"); 1693 fdc->sc_errors = 0; 1694 } else { 1695 if (--fdc->sc_overruns < -20) { 1696 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1697 if (thr > 0) { 1698 thr--; 1699 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1700 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1701 #ifdef FD_DEBUG 1702 if (fdc_debug) 1703 printf("fdc: %d -> threshold\n", thr); 1704 #endif 1705 fdconf(fdc); 1706 } 1707 fdc->sc_overruns = 0; 1708 } 1709 } 1710 fd->sc_blkno += fd->sc_nblks; 1711 fd->sc_skip += fd->sc_nbytes; 1712 fd->sc_bcount -= fd->sc_nbytes; 1713 if (finfo == NULL && fd->sc_bcount > 0) { 1714 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1715 goto doseek; 1716 } 1717 fdfinish(fd, bp); 1718 goto loop; 1719 1720 case DORESET: 1721 /* try a reset, keep motor on */ 1722 fd_set_motor(fdc); 1723 delay(100); 1724 fdc->sc_nstat = 0; 1725 fdc->sc_itask = FDC_ITASK_SENSEI; 1726 fdc->sc_state = RESETCOMPLETE; 1727 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1728 fdc_reset(fdc); 1729 return (1); /* will return later */ 1730 1731 case RESETCOMPLETE: 1732 callout_stop(&fdc->sc_timo_ch); 1733 fdconf(fdc); 1734 1735 /* FALLTHROUGH */ 1736 case DORECAL: 1737 fdc->sc_state = RECALWAIT; 1738 fdc->sc_itask = FDC_ITASK_SENSEI; 1739 fdc->sc_nstat = 0; 1740 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1741 /* recalibrate function */ 1742 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1743 FDC_WRFIFO(fdc, fd->sc_drive); 1744 return (1); /* will return later */ 1745 1746 case RECALWAIT: 1747 callout_stop(&fdc->sc_timo_ch); 1748 fdc->sc_state = RECALCOMPLETE; 1749 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1750 /* allow 1/30 second for heads to settle */ 1751 callout_reset(&fdc->sc_intr_ch, hz / 30, 1752 fdcpseudointr, fdc); 1753 return (1); /* will return later */ 1754 } 1755 1756 case RECALCOMPLETE: 1757 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1758 #ifdef FD_DEBUG 1759 if (fdc_debug) 1760 fdcstatus(fdc, "recalibrate failed"); 1761 #endif 1762 fdcretry(fdc); 1763 goto loop; 1764 } 1765 fd->sc_cylin = 0; 1766 goto doseek; 1767 1768 case MOTORWAIT: 1769 if (fd->sc_flags & FD_MOTOR_WAIT) 1770 return (1); /* time's not up yet */ 1771 goto doseek; 1772 1773 default: 1774 fdcstatus(fdc, "stray interrupt"); 1775 return (1); 1776 } 1777 #ifdef DIAGNOSTIC 1778 panic("fdcintr: impossible"); 1779 #endif 1780 1781 xxx: 1782 /* 1783 * We get here if the chip locks up in FDC_WRFIFO() 1784 * Cancel any operation and schedule a reset 1785 */ 1786 callout_stop(&fdc->sc_timo_ch); 1787 fdcretry(fdc); 1788 (fdc)->sc_state = DORESET; 1789 goto loop; 1790 1791 #undef st0 1792 #undef st1 1793 #undef cyl 1794 } 1795 1796 void 1797 fdcretry(fdc) 1798 struct fdc_softc *fdc; 1799 { 1800 struct fd_softc *fd; 1801 struct buf *bp; 1802 int error = EIO; 1803 1804 fd = fdc->sc_drives.tqh_first; 1805 bp = BUFQ_FIRST(&fd->sc_q); 1806 1807 fdc->sc_overruns = 0; 1808 if (fd->sc_opts & FDOPT_NORETRY) 1809 goto fail; 1810 1811 switch (fdc->sc_errors) { 1812 case 0: 1813 if (fdc->sc_nstat == 7 && 1814 (fdc->sc_status[0] & 0xd8) == 0x40 && 1815 (fdc->sc_status[1] & 0x2) == 0x2) { 1816 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1817 error = EROFS; 1818 goto failsilent; 1819 } 1820 /* try again */ 1821 fdc->sc_state = 1822 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1823 break; 1824 1825 case 1: case 2: case 3: 1826 /* didn't work; try recalibrating */ 1827 fdc->sc_state = DORECAL; 1828 break; 1829 1830 case 4: 1831 if (fdc->sc_nstat == 7 && 1832 fdc->sc_status[0] == 0 && 1833 fdc->sc_status[1] == 0 && 1834 fdc->sc_status[2] == 0) { 1835 /* 1836 * We've retried a few times and we've got 1837 * valid status and all three status bytes 1838 * are zero. Assume this condition is the 1839 * result of no disk loaded into the drive. 1840 */ 1841 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1842 error = ENODEV; 1843 goto failsilent; 1844 } 1845 1846 /* still no go; reset the bastard */ 1847 fdc->sc_state = DORESET; 1848 break; 1849 1850 default: 1851 fail: 1852 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1853 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1854 fd->sc_skip / FD_BSIZE(fd), 1855 (struct disklabel *)NULL); 1856 printf("\n"); 1857 fdcstatus(fdc, "controller status"); 1858 } 1859 1860 failsilent: 1861 bp->b_flags |= B_ERROR; 1862 bp->b_error = error; 1863 fdfinish(fd, bp); 1864 } 1865 fdc->sc_errors++; 1866 } 1867 1868 int 1869 fdsize(dev) 1870 dev_t dev; 1871 { 1872 1873 /* Swapping to floppies would not make sense. */ 1874 return (-1); 1875 } 1876 1877 int 1878 fddump(dev, blkno, va, size) 1879 dev_t dev; 1880 daddr_t blkno; 1881 caddr_t va; 1882 size_t size; 1883 { 1884 1885 /* Not implemented. */ 1886 return (EINVAL); 1887 } 1888 1889 int 1890 fdioctl(dev, cmd, addr, flag, p) 1891 dev_t dev; 1892 u_long cmd; 1893 caddr_t addr; 1894 int flag; 1895 struct proc *p; 1896 { 1897 struct fd_softc *fd; 1898 struct fdc_softc *fdc; 1899 struct fdformat_parms *form_parms; 1900 struct fdformat_cmd *form_cmd; 1901 struct ne7_fd_formb fd_formb; 1902 int il[FD_MAX_NSEC + 1]; 1903 int unit; 1904 int i, j; 1905 int error; 1906 1907 unit = FDUNIT(dev); 1908 if (unit >= fd_cd.cd_ndevs) 1909 return (ENXIO); 1910 1911 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1912 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1913 1914 switch (cmd) { 1915 case DIOCGDINFO: 1916 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1917 return 0; 1918 1919 case DIOCWLABEL: 1920 if ((flag & FWRITE) == 0) 1921 return EBADF; 1922 /* XXX do something */ 1923 return (0); 1924 1925 case DIOCWDINFO: 1926 if ((flag & FWRITE) == 0) 1927 return (EBADF); 1928 1929 error = setdisklabel(fd->sc_dk.dk_label, 1930 (struct disklabel *)addr, 0, 1931 fd->sc_dk.dk_cpulabel); 1932 if (error) 1933 return (error); 1934 1935 error = writedisklabel(dev, fdstrategy, 1936 fd->sc_dk.dk_label, 1937 fd->sc_dk.dk_cpulabel); 1938 return (error); 1939 1940 case DIOCLOCK: 1941 /* 1942 * Nothing to do here, really. 1943 */ 1944 return (0); 1945 1946 case DIOCEJECT: 1947 if (*(int *)addr == 0) { 1948 int part = DISKPART(dev); 1949 /* 1950 * Don't force eject: check that we are the only 1951 * partition open. If so, unlock it. 1952 */ 1953 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1954 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1955 fd->sc_dk.dk_openmask) { 1956 return (EBUSY); 1957 } 1958 } 1959 /* FALLTHROUGH */ 1960 case ODIOCEJECT: 1961 fd_do_eject(fd); 1962 return (0); 1963 1964 case FDIOCGETFORMAT: 1965 form_parms = (struct fdformat_parms *)addr; 1966 form_parms->fdformat_version = FDFORMAT_VERSION; 1967 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1968 form_parms->ncyl = fd->sc_type->cylinders; 1969 form_parms->nspt = fd->sc_type->sectrac; 1970 form_parms->ntrk = fd->sc_type->heads; 1971 form_parms->stepspercyl = fd->sc_type->step; 1972 form_parms->gaplen = fd->sc_type->gap2; 1973 form_parms->fillbyte = fd->sc_type->fillbyte; 1974 form_parms->interleave = fd->sc_type->interleave; 1975 switch (fd->sc_type->rate) { 1976 case FDC_500KBPS: 1977 form_parms->xfer_rate = 500 * 1024; 1978 break; 1979 case FDC_300KBPS: 1980 form_parms->xfer_rate = 300 * 1024; 1981 break; 1982 case FDC_250KBPS: 1983 form_parms->xfer_rate = 250 * 1024; 1984 break; 1985 default: 1986 return (EINVAL); 1987 } 1988 return (0); 1989 1990 case FDIOCSETFORMAT: 1991 if ((flag & FWRITE) == 0) 1992 return (EBADF); /* must be opened for writing */ 1993 1994 form_parms = (struct fdformat_parms *)addr; 1995 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1996 return (EINVAL);/* wrong version of formatting prog */ 1997 1998 i = form_parms->nbps >> 7; 1999 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2000 i & ~(1 << (ffs(i)-1))) 2001 /* not a power-of-two multiple of 128 */ 2002 return (EINVAL); 2003 2004 switch (form_parms->xfer_rate) { 2005 case 500 * 1024: 2006 fd->sc_type->rate = FDC_500KBPS; 2007 break; 2008 case 300 * 1024: 2009 fd->sc_type->rate = FDC_300KBPS; 2010 break; 2011 case 250 * 1024: 2012 fd->sc_type->rate = FDC_250KBPS; 2013 break; 2014 default: 2015 return (EINVAL); 2016 } 2017 2018 if (form_parms->nspt > FD_MAX_NSEC || 2019 form_parms->fillbyte > 0xff || 2020 form_parms->interleave > 0xff) 2021 return EINVAL; 2022 fd->sc_type->sectrac = form_parms->nspt; 2023 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2024 return EINVAL; 2025 fd->sc_type->heads = form_parms->ntrk; 2026 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2027 fd->sc_type->secsize = ffs(i)-1; 2028 fd->sc_type->gap2 = form_parms->gaplen; 2029 fd->sc_type->cylinders = form_parms->ncyl; 2030 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2031 form_parms->nbps / DEV_BSIZE; 2032 fd->sc_type->step = form_parms->stepspercyl; 2033 fd->sc_type->fillbyte = form_parms->fillbyte; 2034 fd->sc_type->interleave = form_parms->interleave; 2035 return (0); 2036 2037 case FDIOCFORMAT_TRACK: 2038 if((flag & FWRITE) == 0) 2039 /* must be opened for writing */ 2040 return (EBADF); 2041 form_cmd = (struct fdformat_cmd *)addr; 2042 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2043 /* wrong version of formatting prog */ 2044 return (EINVAL); 2045 2046 if (form_cmd->head >= fd->sc_type->heads || 2047 form_cmd->cylinder >= fd->sc_type->cylinders) { 2048 return (EINVAL); 2049 } 2050 2051 fd_formb.head = form_cmd->head; 2052 fd_formb.cyl = form_cmd->cylinder; 2053 fd_formb.transfer_rate = fd->sc_type->rate; 2054 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2055 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2056 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2057 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2058 2059 bzero(il, sizeof il); 2060 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2061 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2062 j++; 2063 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2064 j += fd->sc_type->interleave; 2065 } 2066 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2067 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2068 fd_formb.fd_formb_headno(i) = form_cmd->head; 2069 fd_formb.fd_formb_secno(i) = il[i+1]; 2070 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2071 } 2072 2073 return fdformat(dev, &fd_formb, p); 2074 2075 case FDIOCGETOPTS: /* get drive options */ 2076 *(int *)addr = fd->sc_opts; 2077 return (0); 2078 2079 case FDIOCSETOPTS: /* set drive options */ 2080 fd->sc_opts = *(int *)addr; 2081 return (0); 2082 2083 #ifdef FD_DEBUG 2084 case _IO('f', 100): 2085 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2086 fdcresult(fdc); 2087 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2088 for (i = 0; i < fdc->sc_nstat; i++) 2089 printf(" 0x%x", fdc->sc_status[i]); 2090 printf(">\n"); 2091 return (0); 2092 2093 case _IOW('f', 101, int): 2094 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2095 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2096 fdconf(fdc); 2097 return (0); 2098 2099 case _IO('f', 102): 2100 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2101 fdcresult(fdc); 2102 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2103 for (i=0; i< fdc->sc_nstat; i++) 2104 printf(" 0x%x", fdc->sc_status[i]); 2105 printf(">\n"); 2106 return (0); 2107 #endif 2108 default: 2109 return (ENOTTY); 2110 } 2111 2112 #ifdef DIAGNOSTIC 2113 panic("fdioctl: impossible"); 2114 #endif 2115 } 2116 2117 int 2118 fdformat(dev, finfo, p) 2119 dev_t dev; 2120 struct ne7_fd_formb *finfo; 2121 struct proc *p; 2122 { 2123 int rv = 0, s; 2124 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2125 struct fd_type *type = fd->sc_type; 2126 struct buf *bp; 2127 2128 /* set up a buffer header for fdstrategy() */ 2129 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2130 if (bp == 0) 2131 return (ENOBUFS); 2132 2133 PHOLD(p); 2134 bzero((void *)bp, sizeof(struct buf)); 2135 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2136 bp->b_proc = p; 2137 bp->b_dev = dev; 2138 2139 /* 2140 * Calculate a fake blkno, so fdstrategy() would initiate a 2141 * seek to the requested cylinder. 2142 */ 2143 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2144 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2145 / DEV_BSIZE; 2146 2147 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2148 bp->b_data = (caddr_t)finfo; 2149 2150 #ifdef FD_DEBUG 2151 if (fdc_debug) { 2152 int i; 2153 2154 printf("fdformat: blkno 0x%x count %ld\n", 2155 bp->b_blkno, bp->b_bcount); 2156 2157 printf("\tcyl:\t%d\n", finfo->cyl); 2158 printf("\thead:\t%d\n", finfo->head); 2159 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2160 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2161 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2162 printf("\ttrack data:"); 2163 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2164 printf(" [c%d h%d s%d]", 2165 finfo->fd_formb_cylno(i), 2166 finfo->fd_formb_headno(i), 2167 finfo->fd_formb_secno(i) ); 2168 if (finfo->fd_formb_secsize(i) != 2) 2169 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2170 } 2171 printf("\n"); 2172 } 2173 #endif 2174 2175 /* now do the format */ 2176 fdstrategy(bp); 2177 2178 /* ...and wait for it to complete */ 2179 s = splbio(); 2180 while (!(bp->b_flags & B_DONE)) { 2181 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2182 if (rv == EWOULDBLOCK) 2183 break; 2184 } 2185 splx(s); 2186 2187 if (rv == EWOULDBLOCK) { 2188 /* timed out */ 2189 rv = EIO; 2190 biodone(bp); 2191 } 2192 if (bp->b_flags & B_ERROR) { 2193 rv = bp->b_error; 2194 } 2195 PRELE(p); 2196 free(bp, M_TEMP); 2197 return (rv); 2198 } 2199 2200 void 2201 fdgetdisklabel(dev) 2202 dev_t dev; 2203 { 2204 int unit = FDUNIT(dev), i; 2205 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2206 struct disklabel *lp = fd->sc_dk.dk_label; 2207 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2208 2209 bzero(lp, sizeof(struct disklabel)); 2210 bzero(lp, sizeof(struct cpu_disklabel)); 2211 2212 lp->d_type = DTYPE_FLOPPY; 2213 lp->d_secsize = FD_BSIZE(fd); 2214 lp->d_secpercyl = fd->sc_type->seccyl; 2215 lp->d_nsectors = fd->sc_type->sectrac; 2216 lp->d_ncylinders = fd->sc_type->cylinders; 2217 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2218 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2219 lp->d_rpm = 3600; /* XXX like it matters... */ 2220 2221 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2222 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2223 lp->d_interleave = 1; 2224 2225 lp->d_partitions[RAW_PART].p_offset = 0; 2226 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2227 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2228 lp->d_npartitions = RAW_PART + 1; 2229 2230 lp->d_magic = DISKMAGIC; 2231 lp->d_magic2 = DISKMAGIC; 2232 lp->d_checksum = dkcksum(lp); 2233 2234 /* 2235 * Call the generic disklabel extraction routine. If there's 2236 * not a label there, fake it. 2237 */ 2238 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2239 strncpy(lp->d_packname, "default label", 2240 sizeof(lp->d_packname)); 2241 /* 2242 * Reset the partition info; it might have gotten 2243 * trashed in readdisklabel(). 2244 * 2245 * XXX Why do we have to do this? readdisklabel() 2246 * should be safe... 2247 */ 2248 for (i = 0; i < MAXPARTITIONS; ++i) { 2249 lp->d_partitions[i].p_offset = 0; 2250 if (i == RAW_PART) { 2251 lp->d_partitions[i].p_size = 2252 lp->d_secpercyl * lp->d_ncylinders; 2253 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2254 } else { 2255 lp->d_partitions[i].p_size = 0; 2256 lp->d_partitions[i].p_fstype = FS_UNUSED; 2257 } 2258 } 2259 lp->d_npartitions = RAW_PART + 1; 2260 } 2261 } 2262 2263 void 2264 fd_do_eject(fd) 2265 struct fd_softc *fd; 2266 { 2267 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2268 2269 if (CPU_ISSUN4C) { 2270 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2271 delay(10); 2272 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2273 return; 2274 } 2275 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2276 bus_space_tag_t t = fdc->sc_bustag; 2277 bus_space_handle_t h = fdc->sc_handle; 2278 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2279 2280 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2281 delay(10); 2282 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2283 return; 2284 } 2285 } 2286 2287 #ifdef MEMORY_DISK_HOOKS 2288 int fd_read_md_image __P((size_t *, caddr_t *)); 2289 #endif 2290 2291 /* ARGSUSED */ 2292 void 2293 fd_mountroot_hook(dev) 2294 struct device *dev; 2295 { 2296 int c; 2297 2298 fd_do_eject((struct fd_softc *)dev); 2299 printf("Insert filesystem floppy and press return."); 2300 for (;;) { 2301 c = cngetc(); 2302 if ((c == '\r') || (c == '\n')) { 2303 printf("\n"); 2304 break; 2305 } 2306 } 2307 } 2308 2309 #ifdef MEMORY_DISK_HOOKS 2310 2311 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2312 2313 int 2314 fd_read_md_image(sizep, addrp) 2315 size_t *sizep; 2316 caddr_t *addrp; 2317 { 2318 struct buf buf, *bp = &buf; 2319 dev_t dev; 2320 off_t offset; 2321 caddr_t addr; 2322 2323 dev = makedev(54,0); /* XXX */ 2324 2325 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2326 *addrp = addr; 2327 2328 if (fdopen(dev, 0, S_IFCHR, NULL)) 2329 panic("fd: mountroot: fdopen"); 2330 2331 offset = 0; 2332 2333 for (;;) { 2334 bp->b_dev = dev; 2335 bp->b_error = 0; 2336 bp->b_resid = 0; 2337 bp->b_proc = NULL; 2338 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2339 bp->b_blkno = btodb(offset); 2340 bp->b_bcount = DEV_BSIZE; 2341 bp->b_data = addr; 2342 fdstrategy(bp); 2343 while ((bp->b_flags & B_DONE) == 0) { 2344 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2345 } 2346 if (bp->b_error) 2347 panic("fd: mountroot: fdread error %d", bp->b_error); 2348 2349 if (bp->b_resid != 0) 2350 break; 2351 2352 addr += DEV_BSIZE; 2353 offset += DEV_BSIZE; 2354 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2355 break; 2356 } 2357 (void)fdclose(dev, 0, S_IFCHR, NULL); 2358 *sizep = offset; 2359 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2360 return (0); 2361 } 2362 #endif 2363
Indexes created Fri Oct 03 02:09:57 GMT 2025