fd.c revision 1.84
1 /* $NetBSD: fd.c,v 1.84 2000/07/09 20:57:46 pk 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 <uvm/uvm_extern.h> 105 106 #include <machine/autoconf.h> 107 #include <machine/intr.h> 108 #include <machine/conf.h> 109 110 #include <sparc/sparc/auxreg.h> 111 #include <sparc/dev/fdreg.h> 112 #include <sparc/dev/fdvar.h> 113 114 #define FDUNIT(dev) (minor(dev) / 8) 115 #define FDTYPE(dev) (minor(dev) % 8) 116 117 /* XXX misuse a flag to identify format operation */ 118 #define B_FORMAT B_XXX 119 120 #define FD_DEBUG 121 #ifdef FD_DEBUG 122 int fdc_debug = 0; 123 #endif 124 125 enum fdc_state { 126 DEVIDLE = 0, 127 MOTORWAIT, /* 1 */ 128 DOSEEK, /* 2 */ 129 SEEKWAIT, /* 3 */ 130 SEEKTIMEDOUT, /* 4 */ 131 SEEKCOMPLETE, /* 5 */ 132 DOIO, /* 6 */ 133 IOCOMPLETE, /* 7 */ 134 IOTIMEDOUT, /* 8 */ 135 IOCLEANUPWAIT, /* 9 */ 136 IOCLEANUPTIMEDOUT,/*10 */ 137 DORESET, /* 11 */ 138 RESETCOMPLETE, /* 12 */ 139 RESETTIMEDOUT, /* 13 */ 140 DORECAL, /* 14 */ 141 RECALWAIT, /* 15 */ 142 RECALTIMEDOUT, /* 16 */ 143 RECALCOMPLETE, /* 17 */ 144 }; 145 146 /* software state, per controller */ 147 struct fdc_softc { 148 struct device sc_dev; /* boilerplate */ 149 bus_space_tag_t sc_bustag; 150 151 struct callout sc_timo_ch; /* timeout callout */ 152 struct callout sc_intr_ch; /* pseudo-intr callout */ 153 154 struct fd_softc *sc_fd[4]; /* pointers to children */ 155 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 156 enum fdc_state sc_state; 157 int sc_flags; 158 #define FDC_82077 0x01 159 #define FDC_NEEDHEADSETTLE 0x02 160 #define FDC_EIS 0x04 161 #define FDC_NEEDMOTORWAIT 0x08 162 int sc_errors; /* number of retries so far */ 163 int sc_overruns; /* number of DMA overruns */ 164 int sc_cfg; /* current configuration */ 165 struct fdcio sc_io; 166 #define sc_handle sc_io.fdcio_handle 167 #define sc_reg_msr sc_io.fdcio_reg_msr 168 #define sc_reg_fifo sc_io.fdcio_reg_fifo 169 #define sc_reg_dor sc_io.fdcio_reg_dor 170 #define sc_reg_drs sc_io.fdcio_reg_msr 171 #define sc_itask sc_io.fdcio_itask 172 #define sc_istatus sc_io.fdcio_istatus 173 #define sc_data sc_io.fdcio_data 174 #define sc_tc sc_io.fdcio_tc 175 #define sc_nstat sc_io.fdcio_nstat 176 #define sc_status sc_io.fdcio_status 177 #define sc_intrcnt sc_io.fdcio_intrcnt 178 }; 179 180 #undef FDC_C_HANDLER 181 #ifndef FDC_C_HANDLER 182 extern struct fdcio *fdciop; 183 #endif 184 185 /* controller driver configuration */ 186 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 187 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 188 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 189 void fdcattach_obio __P((struct device *, struct device *, void *)); 190 191 int fdcattach __P((struct fdc_softc *, int)); 192 193 struct cfattach fdc_mainbus_ca = { 194 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 195 }; 196 struct cfattach fdc_obio_ca = { 197 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 198 }; 199 200 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 201 202 /* 203 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 204 * we tell them apart. 205 */ 206 struct fd_type { 207 int sectrac; /* sectors per track */ 208 int heads; /* number of heads */ 209 int seccyl; /* sectors per cylinder */ 210 int secsize; /* size code for sectors */ 211 int datalen; /* data len when secsize = 0 */ 212 int steprate; /* step rate and head unload time */ 213 int gap1; /* gap len between sectors */ 214 int gap2; /* formatting gap */ 215 int cylinders; /* total num of cylinders */ 216 int size; /* size of disk in sectors */ 217 int step; /* steps per cylinder */ 218 int rate; /* transfer speed code */ 219 int fillbyte; /* format fill byte */ 220 int interleave; /* interleave factor (formatting) */ 221 char *name; 222 }; 223 224 /* The order of entries in the following table is important -- BEWARE! */ 225 struct fd_type fd_types[] = { 226 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 227 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 228 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 229 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 230 }; 231 232 /* software state, per disk (with up to 4 disks per ctlr) */ 233 struct fd_softc { 234 struct device sc_dv; /* generic device info */ 235 struct disk sc_dk; /* generic disk info */ 236 237 struct fd_type *sc_deftype; /* default type descriptor */ 238 struct fd_type *sc_type; /* current type descriptor */ 239 240 struct callout sc_motoron_ch; 241 struct callout sc_motoroff_ch; 242 243 daddr_t sc_blkno; /* starting block number */ 244 int sc_bcount; /* byte count left */ 245 int sc_skip; /* bytes already transferred */ 246 int sc_nblks; /* number of blocks currently tranferring */ 247 int sc_nbytes; /* number of bytes currently tranferring */ 248 249 int sc_drive; /* physical unit number */ 250 int sc_flags; 251 #define FD_OPEN 0x01 /* it's open */ 252 #define FD_MOTOR 0x02 /* motor should be on */ 253 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 254 int sc_cylin; /* where we think the head is */ 255 int sc_opts; /* user-set options */ 256 257 void *sc_sdhook; /* shutdownhook cookie */ 258 259 TAILQ_ENTRY(fd_softc) sc_drivechain; 260 int sc_ops; /* I/O ops since last switch */ 261 struct buf_queue sc_q; /* pending I/O requests */ 262 int sc_active; /* number of active I/O requests */ 263 }; 264 265 /* floppy driver configuration */ 266 int fdmatch __P((struct device *, struct cfdata *, void *)); 267 void fdattach __P((struct device *, struct device *, void *)); 268 269 struct cfattach fd_ca = { 270 sizeof(struct fd_softc), fdmatch, fdattach 271 }; 272 273 extern struct cfdriver fd_cd; 274 275 void fdgetdisklabel __P((dev_t)); 276 int fd_get_parms __P((struct fd_softc *)); 277 void fdstrategy __P((struct buf *)); 278 void fdstart __P((struct fd_softc *)); 279 int fdprint __P((void *, const char *)); 280 281 struct dkdriver fddkdriver = { fdstrategy }; 282 283 struct fd_type *fd_nvtotype __P((char *, int, int)); 284 void fd_set_motor __P((struct fdc_softc *fdc)); 285 void fd_motor_off __P((void *arg)); 286 void fd_motor_on __P((void *arg)); 287 int fdcresult __P((struct fdc_softc *fdc)); 288 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 289 void fdcstart __P((struct fdc_softc *fdc)); 290 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 291 void fdc_reset __P((struct fdc_softc *fdc)); 292 void fdctimeout __P((void *arg)); 293 void fdcpseudointr __P((void *arg)); 294 #ifdef FDC_C_HANDLER 295 int fdc_c_hwintr __P((void *)); 296 #else 297 void fdchwintr __P((void)); 298 #endif 299 int fdcswintr __P((void *)); 300 int fdcstate __P((struct fdc_softc *)); 301 void fdcretry __P((struct fdc_softc *fdc)); 302 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 303 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 304 void fd_do_eject __P((struct fd_softc *)); 305 void fd_mountroot_hook __P((struct device *)); 306 static int fdconf __P((struct fdc_softc *)); 307 static void establish_chip_type __P(( 308 struct fdc_softc *, 309 bus_space_tag_t, 310 bus_type_t, 311 bus_addr_t, 312 bus_size_t, 313 bus_space_handle_t)); 314 315 316 #if PIL_FDSOFT == 4 317 #define IE_FDSOFT IE_L4 318 #else 319 #error 4 320 #endif 321 322 #ifdef FDC_C_HANDLER 323 #if defined(SUN4M) 324 #define FD_SET_SWINTR do { \ 325 if (CPU_ISSUN4M) \ 326 raise(0, PIL_FDSOFT); \ 327 else \ 328 ienab_bis(IE_L4); \ 329 } while(0) 330 #else 331 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 332 #endif /* defined(SUN4M) */ 333 #endif /* FDC_C_HANDLER */ 334 335 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 336 337 int 338 fdcmatch_mainbus(parent, match, aux) 339 struct device *parent; 340 struct cfdata *match; 341 void *aux; 342 { 343 struct mainbus_attach_args *ma = aux; 344 345 /* 346 * Floppy controller is on mainbus on sun4c. 347 */ 348 if (!CPU_ISSUN4C) 349 return (0); 350 351 /* sun4c PROMs call the controller "fd" */ 352 if (strcmp("fd", ma->ma_name) != 0) 353 return (0); 354 355 return (bus_space_probe(ma->ma_bustag, 356 ma->ma_iospace, 357 ma->ma_paddr, 358 1, /* probe size */ 359 0, /* offset */ 360 0, /* flags */ 361 NULL, NULL)); 362 } 363 364 int 365 fdcmatch_obio(parent, match, aux) 366 struct device *parent; 367 struct cfdata *match; 368 void *aux; 369 { 370 union obio_attach_args *uoba = aux; 371 struct sbus_attach_args *sa; 372 373 /* 374 * Floppy controller is on obio on sun4m. 375 */ 376 if (uoba->uoba_isobio4 != 0) 377 return (0); 378 379 sa = &uoba->uoba_sbus; 380 381 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 382 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 383 return (0); 384 385 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 386 1, /* probe size */ 387 0, /* offset */ 388 0, /* flags */ 389 NULL, NULL)); 390 } 391 392 static void 393 establish_chip_type(fdc, tag, type, addr, size, handle) 394 struct fdc_softc *fdc; 395 bus_space_tag_t tag; 396 bus_type_t type; 397 bus_addr_t addr; 398 bus_size_t size; 399 bus_space_handle_t handle; 400 { 401 u_int8_t v; 402 403 /* 404 * This hack from Chris Torek: apparently DOR really 405 * addresses MSR/DRS on a 82072. 406 * We used to rely on the VERSION command to tell the 407 * difference (which did not work). 408 */ 409 410 /* First, check the size of the register bank */ 411 if (size < 8) 412 /* It isn't a 82077 */ 413 return; 414 415 /* Then probe the DOR register offset */ 416 if (bus_space_probe(tag, type, addr, 417 1, /* probe size */ 418 FDREG77_DOR, /* offset */ 419 0, /* flags */ 420 NULL, NULL) == 0) { 421 422 /* It isn't a 82077 */ 423 return; 424 } 425 426 v = bus_space_read_1(tag, handle, FDREG77_DOR); 427 if (v == NE7_RQM) { 428 /* 429 * Value in DOR looks like it's really MSR 430 */ 431 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 432 v = bus_space_read_1(tag, handle, FDREG77_DOR); 433 if (v == NE7_RQM) { 434 /* 435 * The value in the DOR didn't stick; 436 * it isn't a 82077 437 */ 438 return; 439 } 440 } 441 442 fdc->sc_flags |= FDC_82077; 443 } 444 445 /* 446 * Arguments passed between fdcattach and fdprobe. 447 */ 448 struct fdc_attach_args { 449 int fa_drive; 450 struct fd_type *fa_deftype; 451 }; 452 453 /* 454 * Print the location of a disk drive (called just before attaching the 455 * the drive). If `fdc' is not NULL, the drive was found but was not 456 * in the system config file; print the drive name as well. 457 * Return QUIET (config_find ignores this if the device was configured) to 458 * avoid printing `fdN not configured' messages. 459 */ 460 int 461 fdprint(aux, fdc) 462 void *aux; 463 const char *fdc; 464 { 465 register struct fdc_attach_args *fa = aux; 466 467 if (!fdc) 468 printf(" drive %d", fa->fa_drive); 469 return (QUIET); 470 } 471 472 /* 473 * Configure several parameters and features on the FDC. 474 * Return 0 on success. 475 */ 476 static int 477 fdconf(fdc) 478 struct fdc_softc *fdc; 479 { 480 int vroom; 481 482 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 483 return (-1); 484 485 /* 486 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 487 * the PROM thinks is appropriate. 488 */ 489 if ((vroom = fdc->sc_status[7]) == 0) 490 vroom = 0x64; 491 492 /* Configure controller to use FIFO and Implied Seek */ 493 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 494 return (-1); 495 if (fdc_wrfifo(fdc, vroom) != 0) 496 return (-1); 497 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 498 return (-1); 499 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 500 return (-1); 501 /* No result phase for the NE7CMD_CFG command */ 502 503 if ((fdc->sc_flags & FDC_82077) != 0) { 504 /* Lock configuration across soft resets. */ 505 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 506 fdcresult(fdc) != 1) { 507 #ifdef DEBUG 508 printf("fdconf: CFGLOCK failed"); 509 #endif 510 return (-1); 511 } 512 } 513 514 return (0); 515 #if 0 516 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 517 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 518 if (fdc_debug) 519 printf("[version cmd]"); 520 } 521 #endif 522 } 523 524 void 525 fdcattach_mainbus(parent, self, aux) 526 struct device *parent, *self; 527 void *aux; 528 { 529 struct fdc_softc *fdc = (void *)self; 530 struct mainbus_attach_args *ma = aux; 531 532 fdc->sc_bustag = ma->ma_bustag; 533 534 if (bus_space_map2( 535 ma->ma_bustag, 536 ma->ma_iospace, 537 ma->ma_paddr, 538 ma->ma_size, 539 BUS_SPACE_MAP_LINEAR, 540 0, 541 &fdc->sc_handle) != 0) { 542 printf("%s: cannot map registers\n", self->dv_xname); 543 return; 544 } 545 546 establish_chip_type(fdc, 547 ma->ma_bustag, 548 ma->ma_iospace, 549 ma->ma_paddr, 550 ma->ma_size, 551 fdc->sc_handle); 552 553 if (fdcattach(fdc, ma->ma_pri) != 0) 554 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 555 } 556 557 void 558 fdcattach_obio(parent, self, aux) 559 struct device *parent, *self; 560 void *aux; 561 { 562 struct fdc_softc *fdc = (void *)self; 563 union obio_attach_args *uoba = aux; 564 struct sbus_attach_args *sa = &uoba->uoba_sbus; 565 566 if (sa->sa_nintr == 0) { 567 printf(": no interrupt line configured\n"); 568 return; 569 } 570 571 fdc->sc_bustag = sa->sa_bustag; 572 573 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 574 sa->sa_offset, 575 sa->sa_size, 576 BUS_SPACE_MAP_LINEAR, 577 0, 578 &fdc->sc_handle) != 0) { 579 printf("%s: cannot map control registers\n", 580 self->dv_xname); 581 return; 582 } 583 584 establish_chip_type(fdc, 585 sa->sa_bustag, 586 sa->sa_slot, 587 sa->sa_offset, 588 sa->sa_size, 589 fdc->sc_handle); 590 591 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 592 printf(": no drives attached\n"); 593 return; 594 } 595 596 if (fdcattach(fdc, sa->sa_pri) != 0) 597 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 598 } 599 600 int 601 fdcattach(fdc, pri) 602 struct fdc_softc *fdc; 603 int pri; 604 { 605 struct fdc_attach_args fa; 606 int drive_attached; 607 char code; 608 609 callout_init(&fdc->sc_timo_ch); 610 callout_init(&fdc->sc_intr_ch); 611 612 fdc->sc_state = DEVIDLE; 613 fdc->sc_itask = FDC_ITASK_NONE; 614 fdc->sc_istatus = FDC_ISTATUS_NONE; 615 fdc->sc_flags |= FDC_EIS; 616 TAILQ_INIT(&fdc->sc_drives); 617 618 if ((fdc->sc_flags & FDC_82077) != 0) { 619 fdc->sc_reg_msr = FDREG77_MSR; 620 fdc->sc_reg_fifo = FDREG77_FIFO; 621 fdc->sc_reg_dor = FDREG77_DOR; 622 code = '7'; 623 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 624 } else { 625 fdc->sc_reg_msr = FDREG72_MSR; 626 fdc->sc_reg_fifo = FDREG72_FIFO; 627 fdc->sc_reg_dor = 0; 628 code = '2'; 629 } 630 631 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 632 633 /* 634 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 635 * Note: CFG_EFIFO is active-low, initial threshold value: 8 636 */ 637 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 638 if (fdconf(fdc) != 0) { 639 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 640 return (-1); 641 } 642 643 #ifdef FDC_C_HANDLER 644 (void)bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 0, 645 fdc_c_hwintr, fdc); 646 #else 647 fdciop = &fdc->sc_io; 648 (void)bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 649 BUS_INTR_ESTABLISH_FASTTRAP, 650 (int (*) __P((void *)))fdchwintr, NULL); 651 #endif 652 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, IPL_BIO, 653 BUS_INTR_ESTABLISH_SOFTINTR, 654 fdcswintr, fdc); 655 656 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 657 fdc->sc_dev.dv_xname, "intr"); 658 659 /* physical limit: four drives per controller. */ 660 drive_attached = 0; 661 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 662 fa.fa_deftype = NULL; /* unknown */ 663 fa.fa_deftype = &fd_types[0]; /* XXX */ 664 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 665 drive_attached = 1; 666 } 667 668 if (drive_attached == 0) { 669 /* XXX - dis-establish interrupts here */ 670 /* return (-1); */ 671 } 672 673 return (0); 674 } 675 676 int 677 fdmatch(parent, match, aux) 678 struct device *parent; 679 struct cfdata *match; 680 void *aux; 681 { 682 struct fdc_softc *fdc = (void *)parent; 683 bus_space_tag_t t = fdc->sc_bustag; 684 bus_space_handle_t h = fdc->sc_handle; 685 struct fdc_attach_args *fa = aux; 686 int drive = fa->fa_drive; 687 int n, ok; 688 689 if (drive > 0) 690 /* XXX - for now, punt on more than one drive */ 691 return (0); 692 693 if ((fdc->sc_flags & FDC_82077) != 0) { 694 /* select drive and turn on motor */ 695 bus_space_write_1(t, h, fdc->sc_reg_dor, 696 drive | FDO_FRST | FDO_MOEN(drive)); 697 /* wait for motor to spin up */ 698 delay(250000); 699 } else { 700 auxregbisc(AUXIO4C_FDS, 0); 701 } 702 fdc->sc_nstat = 0; 703 fdc_wrfifo(fdc, NE7CMD_RECAL); 704 fdc_wrfifo(fdc, drive); 705 706 /* Wait for recalibration to complete */ 707 for (n = 0; n < 10000; n++) { 708 u_int8_t v; 709 710 delay(1000); 711 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 712 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 713 /* wait a bit longer till device *really* is ready */ 714 delay(100000); 715 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 716 break; 717 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 718 /* 719 * Got `invalid command'; we interpret it 720 * to mean that the re-calibrate hasn't in 721 * fact finished yet 722 */ 723 continue; 724 break; 725 } 726 } 727 n = fdc->sc_nstat; 728 #ifdef FD_DEBUG 729 if (fdc_debug) { 730 int i; 731 printf("fdprobe: %d stati:", n); 732 for (i = 0; i < n; i++) 733 printf(" 0x%x", fdc->sc_status[i]); 734 printf("\n"); 735 } 736 #endif 737 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 738 739 /* turn off motor */ 740 if ((fdc->sc_flags & FDC_82077) != 0) { 741 /* deselect drive and turn motor off */ 742 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 743 } else { 744 auxregbisc(0, AUXIO4C_FDS); 745 } 746 747 return (ok); 748 } 749 750 /* 751 * Controller is working, and drive responded. Attach it. 752 */ 753 void 754 fdattach(parent, self, aux) 755 struct device *parent, *self; 756 void *aux; 757 { 758 struct fdc_softc *fdc = (void *)parent; 759 struct fd_softc *fd = (void *)self; 760 struct fdc_attach_args *fa = aux; 761 struct fd_type *type = fa->fa_deftype; 762 int drive = fa->fa_drive; 763 764 callout_init(&fd->sc_motoron_ch); 765 callout_init(&fd->sc_motoroff_ch); 766 767 /* XXX Allow `flags' to override device type? */ 768 769 if (type) 770 printf(": %s %d cyl, %d head, %d sec\n", type->name, 771 type->cylinders, type->heads, type->sectrac); 772 else 773 printf(": density unknown\n"); 774 775 BUFQ_INIT(&fd->sc_q); 776 fd->sc_cylin = -1; 777 fd->sc_drive = drive; 778 fd->sc_deftype = type; 779 fdc->sc_fd[drive] = fd; 780 781 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 782 fdc_wrfifo(fdc, type->steprate); 783 /* XXX head load time == 6ms */ 784 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 785 786 /* 787 * Initialize and attach the disk structure. 788 */ 789 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 790 fd->sc_dk.dk_driver = &fddkdriver; 791 disk_attach(&fd->sc_dk); 792 793 /* 794 * Establish a mountroot_hook anyway in case we booted 795 * with RB_ASKNAME and get selected as the boot device. 796 */ 797 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 798 799 /* Make sure the drive motor gets turned off at shutdown time. */ 800 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 801 } 802 803 __inline struct fd_type * 804 fd_dev_to_type(fd, dev) 805 struct fd_softc *fd; 806 dev_t dev; 807 { 808 int type = FDTYPE(dev); 809 810 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 811 return (NULL); 812 return (type ? &fd_types[type - 1] : fd->sc_deftype); 813 } 814 815 void 816 fdstrategy(bp) 817 register struct buf *bp; /* IO operation to perform */ 818 { 819 struct fd_softc *fd; 820 int unit = FDUNIT(bp->b_dev); 821 int sz; 822 int s; 823 824 /* Valid unit, controller, and request? */ 825 if (unit >= fd_cd.cd_ndevs || 826 (fd = fd_cd.cd_devs[unit]) == 0 || 827 bp->b_blkno < 0 || 828 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 829 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 830 (bp->b_flags & B_FORMAT) == 0)) { 831 bp->b_error = EINVAL; 832 goto bad; 833 } 834 835 /* If it's a null transfer, return immediately. */ 836 if (bp->b_bcount == 0) 837 goto done; 838 839 sz = howmany(bp->b_bcount, DEV_BSIZE); 840 841 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 842 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 843 - bp->b_blkno; 844 if (sz == 0) { 845 /* If exactly at end of disk, return EOF. */ 846 bp->b_resid = bp->b_bcount; 847 goto done; 848 } 849 if (sz < 0) { 850 /* If past end of disk, return EINVAL. */ 851 bp->b_error = EINVAL; 852 goto bad; 853 } 854 /* Otherwise, truncate request. */ 855 bp->b_bcount = sz << DEV_BSHIFT; 856 } 857 858 bp->b_rawblkno = bp->b_blkno; 859 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 860 (FD_BSIZE(fd) * fd->sc_type->seccyl); 861 862 #ifdef FD_DEBUG 863 if (fdc_debug > 1) 864 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 865 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 866 #endif 867 868 /* Queue transfer on drive, activate drive and controller if idle. */ 869 s = splbio(); 870 disksort_cylinder(&fd->sc_q, bp); 871 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 872 if (fd->sc_active == 0) 873 fdstart(fd); 874 #ifdef DIAGNOSTIC 875 else { 876 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 877 if (fdc->sc_state == DEVIDLE) { 878 printf("fdstrategy: controller inactive\n"); 879 fdcstart(fdc); 880 } 881 } 882 #endif 883 splx(s); 884 return; 885 886 bad: 887 bp->b_flags |= B_ERROR; 888 done: 889 /* Toss transfer; we're done early. */ 890 biodone(bp); 891 } 892 893 void 894 fdstart(fd) 895 struct fd_softc *fd; 896 { 897 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 898 int active = fdc->sc_drives.tqh_first != 0; 899 900 /* Link into controller queue. */ 901 fd->sc_active = 1; 902 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 903 904 /* If controller not already active, start it. */ 905 if (!active) 906 fdcstart(fdc); 907 } 908 909 void 910 fdfinish(fd, bp) 911 struct fd_softc *fd; 912 struct buf *bp; 913 { 914 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 915 916 /* 917 * Move this drive to the end of the queue to give others a `fair' 918 * chance. We only force a switch if N operations are completed while 919 * another drive is waiting to be serviced, since there is a long motor 920 * startup delay whenever we switch. 921 */ 922 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 923 fd->sc_ops = 0; 924 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 925 if (BUFQ_NEXT(bp) != NULL) { 926 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 927 } else 928 fd->sc_active = 0; 929 } 930 bp->b_resid = fd->sc_bcount; 931 fd->sc_skip = 0; 932 BUFQ_REMOVE(&fd->sc_q, bp); 933 934 biodone(bp); 935 /* turn off motor 5s from now */ 936 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 937 fdc->sc_state = DEVIDLE; 938 } 939 940 void 941 fdc_reset(fdc) 942 struct fdc_softc *fdc; 943 { 944 bus_space_tag_t t = fdc->sc_bustag; 945 bus_space_handle_t h = fdc->sc_handle; 946 947 if ((fdc->sc_flags & FDC_82077) != 0) { 948 bus_space_write_1(t, h, fdc->sc_reg_dor, 949 FDO_FDMAEN | FDO_MOEN(0)); 950 } 951 952 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 953 delay(10); 954 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 955 956 if ((fdc->sc_flags & FDC_82077) != 0) { 957 bus_space_write_1(t, h, fdc->sc_reg_dor, 958 FDO_FRST | FDO_FDMAEN | FDO_DS); 959 } 960 #ifdef FD_DEBUG 961 if (fdc_debug) 962 printf("fdc reset\n"); 963 #endif 964 } 965 966 void 967 fd_set_motor(fdc) 968 struct fdc_softc *fdc; 969 { 970 struct fd_softc *fd; 971 u_char status; 972 int n; 973 974 if ((fdc->sc_flags & FDC_82077) != 0) { 975 status = FDO_FRST | FDO_FDMAEN; 976 if ((fd = fdc->sc_drives.tqh_first) != NULL) 977 status |= fd->sc_drive; 978 979 for (n = 0; n < 4; n++) 980 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 981 status |= FDO_MOEN(n); 982 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 983 fdc->sc_reg_dor, status); 984 } else { 985 986 for (n = 0; n < 4; n++) { 987 if ((fd = fdc->sc_fd[n]) != NULL && 988 (fd->sc_flags & FD_MOTOR) != 0) { 989 auxregbisc(AUXIO4C_FDS, 0); 990 return; 991 } 992 } 993 auxregbisc(0, AUXIO4C_FDS); 994 } 995 } 996 997 void 998 fd_motor_off(arg) 999 void *arg; 1000 { 1001 struct fd_softc *fd = arg; 1002 int s; 1003 1004 s = splbio(); 1005 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1006 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 1007 splx(s); 1008 } 1009 1010 void 1011 fd_motor_on(arg) 1012 void *arg; 1013 { 1014 struct fd_softc *fd = arg; 1015 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1016 int s; 1017 1018 s = splbio(); 1019 fd->sc_flags &= ~FD_MOTOR_WAIT; 1020 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1021 (void) fdcstate(fdc); 1022 splx(s); 1023 } 1024 1025 /* 1026 * Get status bytes off the FDC after a command has finished 1027 * Returns the number of status bytes read; -1 on error. 1028 * The return value is also stored in `sc_nstat'. 1029 */ 1030 int 1031 fdcresult(fdc) 1032 struct fdc_softc *fdc; 1033 { 1034 bus_space_tag_t t = fdc->sc_bustag; 1035 bus_space_handle_t h = fdc->sc_handle; 1036 int j, n = 0; 1037 1038 for (j = 10000; j; j--) { 1039 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1040 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1041 if (v == NE7_RQM) 1042 return (fdc->sc_nstat = n); 1043 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1044 if (n >= sizeof(fdc->sc_status)) { 1045 log(LOG_ERR, "fdcresult: overrun\n"); 1046 return (-1); 1047 } 1048 fdc->sc_status[n++] = 1049 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1050 } else 1051 delay(1); 1052 } 1053 1054 log(LOG_ERR, "fdcresult: timeout\n"); 1055 return (fdc->sc_nstat = -1); 1056 } 1057 1058 /* 1059 * Write a command byte to the FDC. 1060 * Returns 0 on success; -1 on failure (i.e. timeout) 1061 */ 1062 int 1063 fdc_wrfifo(fdc, x) 1064 struct fdc_softc *fdc; 1065 u_int8_t x; 1066 { 1067 bus_space_tag_t t = fdc->sc_bustag; 1068 bus_space_handle_t h = fdc->sc_handle; 1069 int i; 1070 1071 for (i = 100000; i-- > 0;) { 1072 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1073 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1074 /* The chip is ready */ 1075 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1076 return (0); 1077 } 1078 delay(1); 1079 } 1080 return (-1); 1081 } 1082 1083 int 1084 fdopen(dev, flags, fmt, p) 1085 dev_t dev; 1086 int flags, fmt; 1087 struct proc *p; 1088 { 1089 int unit, pmask; 1090 struct fd_softc *fd; 1091 struct fd_type *type; 1092 1093 unit = FDUNIT(dev); 1094 if (unit >= fd_cd.cd_ndevs) 1095 return (ENXIO); 1096 fd = fd_cd.cd_devs[unit]; 1097 if (fd == NULL) 1098 return (ENXIO); 1099 type = fd_dev_to_type(fd, dev); 1100 if (type == NULL) 1101 return (ENXIO); 1102 1103 if ((fd->sc_flags & FD_OPEN) != 0 && 1104 fd->sc_type != type) 1105 return (EBUSY); 1106 1107 fd->sc_type = type; 1108 fd->sc_cylin = -1; 1109 fd->sc_flags |= FD_OPEN; 1110 1111 /* 1112 * Only update the disklabel if we're not open anywhere else. 1113 */ 1114 if (fd->sc_dk.dk_openmask == 0) 1115 fdgetdisklabel(dev); 1116 1117 pmask = (1 << DISKPART(dev)); 1118 1119 switch (fmt) { 1120 case S_IFCHR: 1121 fd->sc_dk.dk_copenmask |= pmask; 1122 break; 1123 1124 case S_IFBLK: 1125 fd->sc_dk.dk_bopenmask |= pmask; 1126 break; 1127 } 1128 fd->sc_dk.dk_openmask = 1129 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1130 1131 return (0); 1132 } 1133 1134 int 1135 fdclose(dev, flags, fmt, p) 1136 dev_t dev; 1137 int flags, fmt; 1138 struct proc *p; 1139 { 1140 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1141 int pmask = (1 << DISKPART(dev)); 1142 1143 fd->sc_flags &= ~FD_OPEN; 1144 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1145 1146 switch (fmt) { 1147 case S_IFCHR: 1148 fd->sc_dk.dk_copenmask &= ~pmask; 1149 break; 1150 1151 case S_IFBLK: 1152 fd->sc_dk.dk_bopenmask &= ~pmask; 1153 break; 1154 } 1155 fd->sc_dk.dk_openmask = 1156 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1157 1158 return (0); 1159 } 1160 1161 int 1162 fdread(dev, uio, flag) 1163 dev_t dev; 1164 struct uio *uio; 1165 int flag; 1166 { 1167 1168 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1169 } 1170 1171 int 1172 fdwrite(dev, uio, flag) 1173 dev_t dev; 1174 struct uio *uio; 1175 int flag; 1176 { 1177 1178 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1179 } 1180 1181 void 1182 fdcstart(fdc) 1183 struct fdc_softc *fdc; 1184 { 1185 1186 #ifdef DIAGNOSTIC 1187 /* only got here if controller's drive queue was inactive; should 1188 be in idle state */ 1189 if (fdc->sc_state != DEVIDLE) { 1190 printf("fdcstart: not idle\n"); 1191 return; 1192 } 1193 #endif 1194 (void) fdcstate(fdc); 1195 } 1196 1197 void 1198 fdcstatus(fdc, s) 1199 struct fdc_softc *fdc; 1200 char *s; 1201 { 1202 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1203 int n; 1204 char bits[64]; 1205 1206 /* Just print last status */ 1207 n = fdc->sc_nstat; 1208 1209 #if 0 1210 /* 1211 * A 82072 seems to return <invalid command> on 1212 * gratuitous Sense Interrupt commands. 1213 */ 1214 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1215 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1216 (void) fdcresult(fdc); 1217 n = 2; 1218 } 1219 #endif 1220 1221 printf("%s: %s: state %d", 1222 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1223 1224 switch (n) { 1225 case 0: 1226 printf("\n"); 1227 break; 1228 case 2: 1229 printf(" (st0 %s cyl %d)\n", 1230 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1231 bits, sizeof(bits)), fdc->sc_status[1]); 1232 break; 1233 case 7: 1234 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1235 NE7_ST0BITS, bits, sizeof(bits))); 1236 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1237 NE7_ST1BITS, bits, sizeof(bits))); 1238 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1239 NE7_ST2BITS, bits, sizeof(bits))); 1240 printf(" cyl %d head %d sec %d)\n", 1241 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1242 break; 1243 #ifdef DIAGNOSTIC 1244 default: 1245 printf(" fdcstatus: weird size: %d\n", n); 1246 break; 1247 #endif 1248 } 1249 } 1250 1251 void 1252 fdctimeout(arg) 1253 void *arg; 1254 { 1255 struct fdc_softc *fdc = arg; 1256 struct fd_softc *fd; 1257 int s; 1258 1259 s = splbio(); 1260 fd = fdc->sc_drives.tqh_first; 1261 if (fd == NULL) { 1262 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1263 fdc->sc_dev.dv_xname, 1264 fdc->sc_state, fdc->sc_istatus); 1265 fdc->sc_state = DEVIDLE; 1266 goto out; 1267 } 1268 1269 if (BUFQ_FIRST(&fd->sc_q) != NULL) 1270 fdc->sc_state++; 1271 else 1272 fdc->sc_state = DEVIDLE; 1273 1274 (void) fdcstate(fdc); 1275 out: 1276 splx(s); 1277 1278 } 1279 1280 void 1281 fdcpseudointr(arg) 1282 void *arg; 1283 { 1284 struct fdc_softc *fdc = arg; 1285 int s; 1286 1287 /* Just ensure it has the right spl. */ 1288 s = splbio(); 1289 (void) fdcstate(fdc); 1290 splx(s); 1291 } 1292 1293 1294 #ifdef FDC_C_HANDLER 1295 /* 1296 * hardware interrupt entry point: must be converted to `fast' 1297 * (in-window) handler. 1298 */ 1299 int 1300 fdc_c_hwintr(arg) 1301 void *arg; 1302 { 1303 struct fdc_softc *fdc = arg; 1304 bus_space_tag_t t = fdc->sc_bustag; 1305 bus_space_handle_t h = fdc->sc_handle; 1306 1307 switch (fdc->sc_itask) { 1308 case FDC_ITASK_NONE: 1309 return (0); 1310 case FDC_ITASK_SENSI: 1311 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1312 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1313 else 1314 fdc->sc_istatus = FDC_ISTATUS_DONE; 1315 FD_SET_SWINTR; 1316 return (1); 1317 case FDC_ITASK_DMA: 1318 /* Proceed with pseudo-dma below */ 1319 break; 1320 default: 1321 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1322 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1323 FD_SET_SWINTR; 1324 return (1); 1325 } 1326 1327 /* 1328 * Pseudo DMA in progress 1329 */ 1330 for (;;) { 1331 u_int8_t msr; 1332 1333 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1334 1335 if ((msr & NE7_RQM) == 0) 1336 /* That's all this round */ 1337 break; 1338 1339 if ((msr & NE7_NDM) == 0) { 1340 fdcresult(fdc); 1341 fdc->sc_istatus = FDC_ISTATUS_DONE; 1342 FD_SET_SWINTR; 1343 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1344 break; 1345 } 1346 1347 /* Another byte can be transferred */ 1348 if ((msr & NE7_DIO) != 0) 1349 *fdc->sc_data = 1350 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1351 else 1352 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1353 *fdc->sc_data); 1354 1355 fdc->sc_data++; 1356 if (--fdc->sc_tc == 0) { 1357 fdc->sc_istatus = FDC_ISTATUS_DONE; 1358 FTC_FLIP; 1359 fdcresult(fdc); 1360 FD_SET_SWINTR; 1361 break; 1362 } 1363 } 1364 return (1); 1365 } 1366 #endif 1367 1368 int 1369 fdcswintr(arg) 1370 void *arg; 1371 { 1372 struct fdc_softc *fdc = arg; 1373 int s; 1374 1375 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1376 /* This (software) interrupt is not for us */ 1377 return (0); 1378 1379 switch (fdc->sc_istatus) { 1380 case FDC_ISTATUS_ERROR: 1381 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1382 break; 1383 case FDC_ISTATUS_SPURIOUS: 1384 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1385 break; 1386 } 1387 1388 s = splbio(); 1389 fdcstate(fdc); 1390 splx(s); 1391 return (1); 1392 } 1393 1394 int 1395 fdcstate(fdc) 1396 struct fdc_softc *fdc; 1397 { 1398 #define st0 fdc->sc_status[0] 1399 #define st1 fdc->sc_status[1] 1400 #define cyl fdc->sc_status[1] 1401 #define FDC_WRFIFO(fdc, c) do { \ 1402 if (fdc_wrfifo(fdc, (c))) { \ 1403 goto xxx; \ 1404 } \ 1405 } while(0) 1406 1407 struct fd_softc *fd; 1408 struct buf *bp; 1409 int read, head, sec, nblks; 1410 struct fd_type *type; 1411 struct ne7_fd_formb *finfo = NULL; 1412 1413 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1414 fdc->sc_state = DORESET; 1415 1416 /* Clear I task/status field */ 1417 fdc->sc_istatus = FDC_ISTATUS_NONE; 1418 fdc->sc_itask = FDC_ITASK_NONE; 1419 1420 loop: 1421 /* Is there a drive for the controller to do a transfer with? */ 1422 fd = fdc->sc_drives.tqh_first; 1423 if (fd == NULL) { 1424 fdc->sc_state = DEVIDLE; 1425 return (0); 1426 } 1427 1428 /* Is there a transfer to this drive? If not, deactivate drive. */ 1429 bp = BUFQ_FIRST(&fd->sc_q); 1430 if (bp == NULL) { 1431 fd->sc_ops = 0; 1432 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1433 fd->sc_active = 0; 1434 goto loop; 1435 } 1436 1437 if (bp->b_flags & B_FORMAT) 1438 finfo = (struct ne7_fd_formb *)bp->b_data; 1439 1440 switch (fdc->sc_state) { 1441 case DEVIDLE: 1442 fdc->sc_errors = 0; 1443 fd->sc_skip = 0; 1444 fd->sc_bcount = bp->b_bcount; 1445 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1446 callout_stop(&fd->sc_motoroff_ch); 1447 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1448 fdc->sc_state = MOTORWAIT; 1449 return (1); 1450 } 1451 if ((fd->sc_flags & FD_MOTOR) == 0) { 1452 /* Turn on the motor, being careful about pairing. */ 1453 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1454 if (ofd && ofd->sc_flags & FD_MOTOR) { 1455 callout_stop(&ofd->sc_motoroff_ch); 1456 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1457 } 1458 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1459 fd_set_motor(fdc); 1460 fdc->sc_state = MOTORWAIT; 1461 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1462 /* Allow .25s for motor to stabilize. */ 1463 callout_reset(&fd->sc_motoron_ch, hz / 4, 1464 fd_motor_on, fd); 1465 } else { 1466 fd->sc_flags &= ~FD_MOTOR_WAIT; 1467 goto loop; 1468 } 1469 return (1); 1470 } 1471 /* Make sure the right drive is selected. */ 1472 fd_set_motor(fdc); 1473 1474 /*FALLTHROUGH*/ 1475 case DOSEEK: 1476 doseek: 1477 if ((fdc->sc_flags & FDC_EIS) && 1478 (bp->b_flags & B_FORMAT) == 0) { 1479 fd->sc_cylin = bp->b_cylinder; 1480 /* We use implied seek */ 1481 goto doio; 1482 } 1483 1484 if (fd->sc_cylin == bp->b_cylinder) 1485 goto doio; 1486 1487 fd->sc_cylin = -1; 1488 fdc->sc_state = SEEKWAIT; 1489 fdc->sc_nstat = 0; 1490 1491 fd->sc_dk.dk_seek++; 1492 1493 disk_busy(&fd->sc_dk); 1494 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1495 1496 /* specify command */ 1497 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1498 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1499 /* XXX head load time == 6ms */ 1500 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1501 1502 fdc->sc_itask = FDC_ITASK_SENSEI; 1503 /* seek function */ 1504 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1505 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1506 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1507 return (1); 1508 1509 case DOIO: 1510 doio: 1511 if (finfo != NULL) 1512 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1513 (char *)finfo; 1514 type = fd->sc_type; 1515 sec = fd->sc_blkno % type->seccyl; 1516 nblks = type->seccyl - sec; 1517 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1518 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1519 fd->sc_nblks = nblks; 1520 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1521 head = sec / type->sectrac; 1522 sec -= head * type->sectrac; 1523 #ifdef DIAGNOSTIC 1524 {int block; 1525 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1526 if (block != fd->sc_blkno) { 1527 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1528 #ifdef DDB 1529 Debugger(); 1530 #endif 1531 }} 1532 #endif 1533 read = bp->b_flags & B_READ; 1534 1535 /* Setup for pseudo DMA */ 1536 fdc->sc_data = bp->b_data + fd->sc_skip; 1537 fdc->sc_tc = fd->sc_nbytes; 1538 1539 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1540 fdc->sc_reg_drs, type->rate); 1541 #ifdef FD_DEBUG 1542 if (fdc_debug > 1) 1543 printf("fdcstate: doio: %s drive %d " 1544 "track %d head %d sec %d nblks %d\n", 1545 finfo ? "format" : 1546 (read ? "read" : "write"), 1547 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1548 #endif 1549 fdc->sc_state = IOCOMPLETE; 1550 fdc->sc_itask = FDC_ITASK_DMA; 1551 fdc->sc_nstat = 0; 1552 1553 disk_busy(&fd->sc_dk); 1554 1555 /* allow 3 seconds for operation */ 1556 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1557 1558 if (finfo != NULL) { 1559 /* formatting */ 1560 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1561 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1562 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1563 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1564 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1565 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1566 } else { 1567 if (read) 1568 FDC_WRFIFO(fdc, NE7CMD_READ); 1569 else 1570 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1571 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1572 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1573 FDC_WRFIFO(fdc, head); 1574 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1575 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1576 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1577 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1578 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1579 } 1580 1581 return (1); /* will return later */ 1582 1583 case SEEKWAIT: 1584 callout_stop(&fdc->sc_timo_ch); 1585 fdc->sc_state = SEEKCOMPLETE; 1586 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1587 /* allow 1/50 second for heads to settle */ 1588 callout_reset(&fdc->sc_intr_ch, hz / 50, 1589 fdcpseudointr, fdc); 1590 return (1); /* will return later */ 1591 } 1592 /*FALLTHROUGH*/ 1593 case SEEKCOMPLETE: 1594 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1595 1596 /* Make sure seek really happened. */ 1597 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1598 cyl != bp->b_cylinder * fd->sc_type->step) { 1599 #ifdef FD_DEBUG 1600 if (fdc_debug) 1601 fdcstatus(fdc, "seek failed"); 1602 #endif 1603 fdcretry(fdc); 1604 goto loop; 1605 } 1606 fd->sc_cylin = bp->b_cylinder; 1607 goto doio; 1608 1609 case IOTIMEDOUT: 1610 /* 1611 * Try to abort the I/O operation without resetting 1612 * the chip first. Poke TC and arrange to pick up 1613 * the timed out I/O command's status. 1614 */ 1615 fdc->sc_itask = FDC_ITASK_RESULT; 1616 fdc->sc_state = IOCLEANUPWAIT; 1617 fdc->sc_nstat = 0; 1618 /* 1/10 second should be enough */ 1619 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1620 FTC_FLIP; 1621 return (1); 1622 1623 case IOCLEANUPTIMEDOUT: 1624 case SEEKTIMEDOUT: 1625 case RECALTIMEDOUT: 1626 case RESETTIMEDOUT: 1627 fdcstatus(fdc, "timeout"); 1628 1629 /* All other timeouts always roll through to a chip reset */ 1630 fdcretry(fdc); 1631 1632 /* Force reset, no matter what fdcretry() says */ 1633 fdc->sc_state = DORESET; 1634 goto loop; 1635 1636 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1637 callout_stop(&fdc->sc_timo_ch); 1638 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1639 fdcretry(fdc); 1640 goto loop; 1641 1642 case IOCOMPLETE: /* IO DONE, post-analyze */ 1643 callout_stop(&fdc->sc_timo_ch); 1644 1645 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1646 1647 if (fdc->sc_nstat != 7 || st1 != 0 || 1648 ((st0 & 0xf8) != 0 && 1649 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1650 #ifdef FD_DEBUG 1651 if (fdc_debug) { 1652 fdcstatus(fdc, 1653 bp->b_flags & B_READ 1654 ? "read failed" : "write failed"); 1655 printf("blkno %d nblks %d nstat %d tc %d\n", 1656 fd->sc_blkno, fd->sc_nblks, 1657 fdc->sc_nstat, fdc->sc_tc); 1658 } 1659 #endif 1660 if (fdc->sc_nstat == 7 && 1661 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1662 1663 /* 1664 * Silently retry overruns if no other 1665 * error bit is set. Adjust threshold. 1666 */ 1667 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1668 if (thr < 15) { 1669 thr++; 1670 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1671 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1672 #ifdef FD_DEBUG 1673 if (fdc_debug) 1674 printf("fdc: %d -> threshold\n", thr); 1675 #endif 1676 fdconf(fdc); 1677 fdc->sc_overruns = 0; 1678 } 1679 if (++fdc->sc_overruns < 3) { 1680 fdc->sc_state = DOIO; 1681 goto loop; 1682 } 1683 } 1684 fdcretry(fdc); 1685 goto loop; 1686 } 1687 if (fdc->sc_errors) { 1688 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1689 fd->sc_skip / FD_BSIZE(fd), 1690 (struct disklabel *)NULL); 1691 printf("\n"); 1692 fdc->sc_errors = 0; 1693 } else { 1694 if (--fdc->sc_overruns < -20) { 1695 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1696 if (thr > 0) { 1697 thr--; 1698 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1699 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1700 #ifdef FD_DEBUG 1701 if (fdc_debug) 1702 printf("fdc: %d -> threshold\n", thr); 1703 #endif 1704 fdconf(fdc); 1705 } 1706 fdc->sc_overruns = 0; 1707 } 1708 } 1709 fd->sc_blkno += fd->sc_nblks; 1710 fd->sc_skip += fd->sc_nbytes; 1711 fd->sc_bcount -= fd->sc_nbytes; 1712 if (finfo == NULL && fd->sc_bcount > 0) { 1713 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1714 goto doseek; 1715 } 1716 fdfinish(fd, bp); 1717 goto loop; 1718 1719 case DORESET: 1720 /* try a reset, keep motor on */ 1721 fd_set_motor(fdc); 1722 delay(100); 1723 fdc->sc_nstat = 0; 1724 fdc->sc_itask = FDC_ITASK_SENSEI; 1725 fdc->sc_state = RESETCOMPLETE; 1726 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1727 fdc_reset(fdc); 1728 return (1); /* will return later */ 1729 1730 case RESETCOMPLETE: 1731 callout_stop(&fdc->sc_timo_ch); 1732 fdconf(fdc); 1733 1734 /* FALLTHROUGH */ 1735 case DORECAL: 1736 fdc->sc_state = RECALWAIT; 1737 fdc->sc_itask = FDC_ITASK_SENSEI; 1738 fdc->sc_nstat = 0; 1739 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1740 /* recalibrate function */ 1741 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1742 FDC_WRFIFO(fdc, fd->sc_drive); 1743 return (1); /* will return later */ 1744 1745 case RECALWAIT: 1746 callout_stop(&fdc->sc_timo_ch); 1747 fdc->sc_state = RECALCOMPLETE; 1748 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1749 /* allow 1/30 second for heads to settle */ 1750 callout_reset(&fdc->sc_intr_ch, hz / 30, 1751 fdcpseudointr, fdc); 1752 return (1); /* will return later */ 1753 } 1754 1755 case RECALCOMPLETE: 1756 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1757 #ifdef FD_DEBUG 1758 if (fdc_debug) 1759 fdcstatus(fdc, "recalibrate failed"); 1760 #endif 1761 fdcretry(fdc); 1762 goto loop; 1763 } 1764 fd->sc_cylin = 0; 1765 goto doseek; 1766 1767 case MOTORWAIT: 1768 if (fd->sc_flags & FD_MOTOR_WAIT) 1769 return (1); /* time's not up yet */ 1770 goto doseek; 1771 1772 default: 1773 fdcstatus(fdc, "stray interrupt"); 1774 return (1); 1775 } 1776 #ifdef DIAGNOSTIC 1777 panic("fdcintr: impossible"); 1778 #endif 1779 1780 xxx: 1781 /* 1782 * We get here if the chip locks up in FDC_WRFIFO() 1783 * Cancel any operation and schedule a reset 1784 */ 1785 callout_stop(&fdc->sc_timo_ch); 1786 fdcretry(fdc); 1787 (fdc)->sc_state = DORESET; 1788 goto loop; 1789 1790 #undef st0 1791 #undef st1 1792 #undef cyl 1793 } 1794 1795 void 1796 fdcretry(fdc) 1797 struct fdc_softc *fdc; 1798 { 1799 struct fd_softc *fd; 1800 struct buf *bp; 1801 int error = EIO; 1802 1803 fd = fdc->sc_drives.tqh_first; 1804 bp = BUFQ_FIRST(&fd->sc_q); 1805 1806 fdc->sc_overruns = 0; 1807 if (fd->sc_opts & FDOPT_NORETRY) 1808 goto fail; 1809 1810 switch (fdc->sc_errors) { 1811 case 0: 1812 if (fdc->sc_nstat == 7 && 1813 (fdc->sc_status[0] & 0xd8) == 0x40 && 1814 (fdc->sc_status[1] & 0x2) == 0x2) { 1815 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1816 error = EROFS; 1817 goto failsilent; 1818 } 1819 /* try again */ 1820 fdc->sc_state = 1821 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1822 break; 1823 1824 case 1: case 2: case 3: 1825 /* didn't work; try recalibrating */ 1826 fdc->sc_state = DORECAL; 1827 break; 1828 1829 case 4: 1830 if (fdc->sc_nstat == 7 && 1831 fdc->sc_status[0] == 0 && 1832 fdc->sc_status[1] == 0 && 1833 fdc->sc_status[2] == 0) { 1834 /* 1835 * We've retried a few times and we've got 1836 * valid status and all three status bytes 1837 * are zero. Assume this condition is the 1838 * result of no disk loaded into the drive. 1839 */ 1840 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1841 error = ENODEV; 1842 goto failsilent; 1843 } 1844 1845 /* still no go; reset the bastard */ 1846 fdc->sc_state = DORESET; 1847 break; 1848 1849 default: 1850 fail: 1851 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1852 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1853 fd->sc_skip / FD_BSIZE(fd), 1854 (struct disklabel *)NULL); 1855 printf("\n"); 1856 fdcstatus(fdc, "controller status"); 1857 } 1858 1859 failsilent: 1860 bp->b_flags |= B_ERROR; 1861 bp->b_error = error; 1862 fdfinish(fd, bp); 1863 } 1864 fdc->sc_errors++; 1865 } 1866 1867 int 1868 fdsize(dev) 1869 dev_t dev; 1870 { 1871 1872 /* Swapping to floppies would not make sense. */ 1873 return (-1); 1874 } 1875 1876 int 1877 fddump(dev, blkno, va, size) 1878 dev_t dev; 1879 daddr_t blkno; 1880 caddr_t va; 1881 size_t size; 1882 { 1883 1884 /* Not implemented. */ 1885 return (EINVAL); 1886 } 1887 1888 int 1889 fdioctl(dev, cmd, addr, flag, p) 1890 dev_t dev; 1891 u_long cmd; 1892 caddr_t addr; 1893 int flag; 1894 struct proc *p; 1895 { 1896 struct fd_softc *fd; 1897 struct fdc_softc *fdc; 1898 struct fdformat_parms *form_parms; 1899 struct fdformat_cmd *form_cmd; 1900 struct ne7_fd_formb fd_formb; 1901 int il[FD_MAX_NSEC + 1]; 1902 int unit; 1903 int i, j; 1904 int error; 1905 1906 unit = FDUNIT(dev); 1907 if (unit >= fd_cd.cd_ndevs) 1908 return (ENXIO); 1909 1910 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1911 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1912 1913 switch (cmd) { 1914 case DIOCGDINFO: 1915 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1916 return 0; 1917 1918 case DIOCWLABEL: 1919 if ((flag & FWRITE) == 0) 1920 return EBADF; 1921 /* XXX do something */ 1922 return (0); 1923 1924 case DIOCWDINFO: 1925 if ((flag & FWRITE) == 0) 1926 return (EBADF); 1927 1928 error = setdisklabel(fd->sc_dk.dk_label, 1929 (struct disklabel *)addr, 0, 1930 fd->sc_dk.dk_cpulabel); 1931 if (error) 1932 return (error); 1933 1934 error = writedisklabel(dev, fdstrategy, 1935 fd->sc_dk.dk_label, 1936 fd->sc_dk.dk_cpulabel); 1937 return (error); 1938 1939 case DIOCLOCK: 1940 /* 1941 * Nothing to do here, really. 1942 */ 1943 return (0); 1944 1945 case DIOCEJECT: 1946 if (*(int *)addr == 0) { 1947 int part = DISKPART(dev); 1948 /* 1949 * Don't force eject: check that we are the only 1950 * partition open. If so, unlock it. 1951 */ 1952 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1953 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1954 fd->sc_dk.dk_openmask) { 1955 return (EBUSY); 1956 } 1957 } 1958 /* FALLTHROUGH */ 1959 case ODIOCEJECT: 1960 fd_do_eject(fd); 1961 return (0); 1962 1963 case FDIOCGETFORMAT: 1964 form_parms = (struct fdformat_parms *)addr; 1965 form_parms->fdformat_version = FDFORMAT_VERSION; 1966 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1967 form_parms->ncyl = fd->sc_type->cylinders; 1968 form_parms->nspt = fd->sc_type->sectrac; 1969 form_parms->ntrk = fd->sc_type->heads; 1970 form_parms->stepspercyl = fd->sc_type->step; 1971 form_parms->gaplen = fd->sc_type->gap2; 1972 form_parms->fillbyte = fd->sc_type->fillbyte; 1973 form_parms->interleave = fd->sc_type->interleave; 1974 switch (fd->sc_type->rate) { 1975 case FDC_500KBPS: 1976 form_parms->xfer_rate = 500 * 1024; 1977 break; 1978 case FDC_300KBPS: 1979 form_parms->xfer_rate = 300 * 1024; 1980 break; 1981 case FDC_250KBPS: 1982 form_parms->xfer_rate = 250 * 1024; 1983 break; 1984 default: 1985 return (EINVAL); 1986 } 1987 return (0); 1988 1989 case FDIOCSETFORMAT: 1990 if ((flag & FWRITE) == 0) 1991 return (EBADF); /* must be opened for writing */ 1992 1993 form_parms = (struct fdformat_parms *)addr; 1994 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1995 return (EINVAL);/* wrong version of formatting prog */ 1996 1997 i = form_parms->nbps >> 7; 1998 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1999 i & ~(1 << (ffs(i)-1))) 2000 /* not a power-of-two multiple of 128 */ 2001 return (EINVAL); 2002 2003 switch (form_parms->xfer_rate) { 2004 case 500 * 1024: 2005 fd->sc_type->rate = FDC_500KBPS; 2006 break; 2007 case 300 * 1024: 2008 fd->sc_type->rate = FDC_300KBPS; 2009 break; 2010 case 250 * 1024: 2011 fd->sc_type->rate = FDC_250KBPS; 2012 break; 2013 default: 2014 return (EINVAL); 2015 } 2016 2017 if (form_parms->nspt > FD_MAX_NSEC || 2018 form_parms->fillbyte > 0xff || 2019 form_parms->interleave > 0xff) 2020 return EINVAL; 2021 fd->sc_type->sectrac = form_parms->nspt; 2022 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2023 return EINVAL; 2024 fd->sc_type->heads = form_parms->ntrk; 2025 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2026 fd->sc_type->secsize = ffs(i)-1; 2027 fd->sc_type->gap2 = form_parms->gaplen; 2028 fd->sc_type->cylinders = form_parms->ncyl; 2029 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2030 form_parms->nbps / DEV_BSIZE; 2031 fd->sc_type->step = form_parms->stepspercyl; 2032 fd->sc_type->fillbyte = form_parms->fillbyte; 2033 fd->sc_type->interleave = form_parms->interleave; 2034 return (0); 2035 2036 case FDIOCFORMAT_TRACK: 2037 if((flag & FWRITE) == 0) 2038 /* must be opened for writing */ 2039 return (EBADF); 2040 form_cmd = (struct fdformat_cmd *)addr; 2041 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2042 /* wrong version of formatting prog */ 2043 return (EINVAL); 2044 2045 if (form_cmd->head >= fd->sc_type->heads || 2046 form_cmd->cylinder >= fd->sc_type->cylinders) { 2047 return (EINVAL); 2048 } 2049 2050 fd_formb.head = form_cmd->head; 2051 fd_formb.cyl = form_cmd->cylinder; 2052 fd_formb.transfer_rate = fd->sc_type->rate; 2053 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2054 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2055 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2056 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2057 2058 bzero(il, sizeof il); 2059 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2060 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2061 j++; 2062 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2063 j += fd->sc_type->interleave; 2064 } 2065 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2066 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2067 fd_formb.fd_formb_headno(i) = form_cmd->head; 2068 fd_formb.fd_formb_secno(i) = il[i+1]; 2069 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2070 } 2071 2072 return fdformat(dev, &fd_formb, p); 2073 2074 case FDIOCGETOPTS: /* get drive options */ 2075 *(int *)addr = fd->sc_opts; 2076 return (0); 2077 2078 case FDIOCSETOPTS: /* set drive options */ 2079 fd->sc_opts = *(int *)addr; 2080 return (0); 2081 2082 #ifdef FD_DEBUG 2083 case _IO('f', 100): 2084 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2085 fdcresult(fdc); 2086 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2087 for (i = 0; i < fdc->sc_nstat; i++) 2088 printf(" 0x%x", fdc->sc_status[i]); 2089 printf(">\n"); 2090 return (0); 2091 2092 case _IOW('f', 101, int): 2093 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2094 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2095 fdconf(fdc); 2096 return (0); 2097 2098 case _IO('f', 102): 2099 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2100 fdcresult(fdc); 2101 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2102 for (i=0; i< fdc->sc_nstat; i++) 2103 printf(" 0x%x", fdc->sc_status[i]); 2104 printf(">\n"); 2105 return (0); 2106 #endif 2107 default: 2108 return (ENOTTY); 2109 } 2110 2111 #ifdef DIAGNOSTIC 2112 panic("fdioctl: impossible"); 2113 #endif 2114 } 2115 2116 int 2117 fdformat(dev, finfo, p) 2118 dev_t dev; 2119 struct ne7_fd_formb *finfo; 2120 struct proc *p; 2121 { 2122 int rv = 0, s; 2123 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2124 struct fd_type *type = fd->sc_type; 2125 struct buf *bp; 2126 2127 /* set up a buffer header for fdstrategy() */ 2128 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2129 if (bp == 0) 2130 return (ENOBUFS); 2131 2132 PHOLD(p); 2133 bzero((void *)bp, sizeof(struct buf)); 2134 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2135 bp->b_proc = p; 2136 bp->b_dev = dev; 2137 2138 /* 2139 * Calculate a fake blkno, so fdstrategy() would initiate a 2140 * seek to the requested cylinder. 2141 */ 2142 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2143 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2144 / DEV_BSIZE; 2145 2146 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2147 bp->b_data = (caddr_t)finfo; 2148 2149 #ifdef FD_DEBUG 2150 if (fdc_debug) { 2151 int i; 2152 2153 printf("fdformat: blkno 0x%x count %ld\n", 2154 bp->b_blkno, bp->b_bcount); 2155 2156 printf("\tcyl:\t%d\n", finfo->cyl); 2157 printf("\thead:\t%d\n", finfo->head); 2158 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2159 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2160 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2161 printf("\ttrack data:"); 2162 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2163 printf(" [c%d h%d s%d]", 2164 finfo->fd_formb_cylno(i), 2165 finfo->fd_formb_headno(i), 2166 finfo->fd_formb_secno(i) ); 2167 if (finfo->fd_formb_secsize(i) != 2) 2168 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2169 } 2170 printf("\n"); 2171 } 2172 #endif 2173 2174 /* now do the format */ 2175 fdstrategy(bp); 2176 2177 /* ...and wait for it to complete */ 2178 s = splbio(); 2179 while (!(bp->b_flags & B_DONE)) { 2180 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2181 if (rv == EWOULDBLOCK) 2182 break; 2183 } 2184 splx(s); 2185 2186 if (rv == EWOULDBLOCK) { 2187 /* timed out */ 2188 rv = EIO; 2189 biodone(bp); 2190 } 2191 if (bp->b_flags & B_ERROR) { 2192 rv = bp->b_error; 2193 } 2194 PRELE(p); 2195 free(bp, M_TEMP); 2196 return (rv); 2197 } 2198 2199 void 2200 fdgetdisklabel(dev) 2201 dev_t dev; 2202 { 2203 int unit = FDUNIT(dev), i; 2204 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2205 struct disklabel *lp = fd->sc_dk.dk_label; 2206 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2207 2208 bzero(lp, sizeof(struct disklabel)); 2209 bzero(lp, sizeof(struct cpu_disklabel)); 2210 2211 lp->d_type = DTYPE_FLOPPY; 2212 lp->d_secsize = FD_BSIZE(fd); 2213 lp->d_secpercyl = fd->sc_type->seccyl; 2214 lp->d_nsectors = fd->sc_type->sectrac; 2215 lp->d_ncylinders = fd->sc_type->cylinders; 2216 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2217 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2218 lp->d_rpm = 3600; /* XXX like it matters... */ 2219 2220 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2221 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2222 lp->d_interleave = 1; 2223 2224 lp->d_partitions[RAW_PART].p_offset = 0; 2225 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2226 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2227 lp->d_npartitions = RAW_PART + 1; 2228 2229 lp->d_magic = DISKMAGIC; 2230 lp->d_magic2 = DISKMAGIC; 2231 lp->d_checksum = dkcksum(lp); 2232 2233 /* 2234 * Call the generic disklabel extraction routine. If there's 2235 * not a label there, fake it. 2236 */ 2237 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2238 strncpy(lp->d_packname, "default label", 2239 sizeof(lp->d_packname)); 2240 /* 2241 * Reset the partition info; it might have gotten 2242 * trashed in readdisklabel(). 2243 * 2244 * XXX Why do we have to do this? readdisklabel() 2245 * should be safe... 2246 */ 2247 for (i = 0; i < MAXPARTITIONS; ++i) { 2248 lp->d_partitions[i].p_offset = 0; 2249 if (i == RAW_PART) { 2250 lp->d_partitions[i].p_size = 2251 lp->d_secpercyl * lp->d_ncylinders; 2252 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2253 } else { 2254 lp->d_partitions[i].p_size = 0; 2255 lp->d_partitions[i].p_fstype = FS_UNUSED; 2256 } 2257 } 2258 lp->d_npartitions = RAW_PART + 1; 2259 } 2260 } 2261 2262 void 2263 fd_do_eject(fd) 2264 struct fd_softc *fd; 2265 { 2266 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2267 2268 if (CPU_ISSUN4C) { 2269 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2270 delay(10); 2271 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2272 return; 2273 } 2274 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2275 bus_space_tag_t t = fdc->sc_bustag; 2276 bus_space_handle_t h = fdc->sc_handle; 2277 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2278 2279 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2280 delay(10); 2281 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2282 return; 2283 } 2284 } 2285 2286 #ifdef MEMORY_DISK_HOOKS 2287 int fd_read_md_image __P((size_t *, caddr_t *)); 2288 #endif 2289 2290 /* ARGSUSED */ 2291 void 2292 fd_mountroot_hook(dev) 2293 struct device *dev; 2294 { 2295 int c; 2296 2297 fd_do_eject((struct fd_softc *)dev); 2298 printf("Insert filesystem floppy and press return."); 2299 for (;;) { 2300 c = cngetc(); 2301 if ((c == '\r') || (c == '\n')) { 2302 printf("\n"); 2303 break; 2304 } 2305 } 2306 } 2307 2308 #ifdef MEMORY_DISK_HOOKS 2309 2310 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2311 2312 int 2313 fd_read_md_image(sizep, addrp) 2314 size_t *sizep; 2315 caddr_t *addrp; 2316 { 2317 struct buf buf, *bp = &buf; 2318 dev_t dev; 2319 off_t offset; 2320 caddr_t addr; 2321 2322 dev = makedev(54,0); /* XXX */ 2323 2324 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2325 *addrp = addr; 2326 2327 if (fdopen(dev, 0, S_IFCHR, NULL)) 2328 panic("fd: mountroot: fdopen"); 2329 2330 offset = 0; 2331 2332 for (;;) { 2333 bp->b_dev = dev; 2334 bp->b_error = 0; 2335 bp->b_resid = 0; 2336 bp->b_proc = NULL; 2337 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2338 bp->b_blkno = btodb(offset); 2339 bp->b_bcount = DEV_BSIZE; 2340 bp->b_data = addr; 2341 fdstrategy(bp); 2342 while ((bp->b_flags & B_DONE) == 0) { 2343 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2344 } 2345 if (bp->b_error) 2346 panic("fd: mountroot: fdread error %d", bp->b_error); 2347 2348 if (bp->b_resid != 0) 2349 break; 2350 2351 addr += DEV_BSIZE; 2352 offset += DEV_BSIZE; 2353 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2354 break; 2355 } 2356 (void)fdclose(dev, 0, S_IFCHR, NULL); 2357 *sizep = offset; 2358 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2359 return (0); 2360 } 2361 #endif 2362
Indexes created Fri Oct 03 02:09:57 GMT 2025