fd.c revision 1.72
1 /* $NetBSD: fd.c,v 1.72 2000/01/21 23:29:07 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/kernel.h> 85 #include <sys/file.h> 86 #include <sys/ioctl.h> 87 #include <sys/device.h> 88 #include <sys/disklabel.h> 89 #include <sys/dkstat.h> 90 #include <sys/disk.h> 91 #include <sys/fdio.h> 92 #include <sys/buf.h> 93 #include <sys/malloc.h> 94 #include <sys/proc.h> 95 #include <sys/uio.h> 96 #include <sys/stat.h> 97 #include <sys/syslog.h> 98 #include <sys/queue.h> 99 #include <sys/conf.h> 100 101 #include <dev/cons.h> 102 103 #include <vm/vm.h> 104 105 #include <uvm/uvm_extern.h> 106 107 #include <machine/cpu.h> 108 #include <machine/autoconf.h> 109 #include <machine/conf.h> 110 111 #include <sparc/sparc/auxreg.h> 112 #include <sparc/dev/fdreg.h> 113 #include <sparc/dev/fdvar.h> 114 115 #define FDUNIT(dev) (minor(dev) / 8) 116 #define FDTYPE(dev) (minor(dev) % 8) 117 118 /* XXX misuse a flag to identify format operation */ 119 #define B_FORMAT B_XXX 120 121 #define FD_DEBUG 122 #ifdef FD_DEBUG 123 int fdc_debug = 0; 124 #endif 125 126 enum fdc_state { 127 DEVIDLE = 0, 128 MOTORWAIT, /* 1 */ 129 DOSEEK, /* 2 */ 130 SEEKWAIT, /* 3 */ 131 SEEKTIMEDOUT, /* 4 */ 132 SEEKCOMPLETE, /* 5 */ 133 DOIO, /* 6 */ 134 IOCOMPLETE, /* 7 */ 135 IOTIMEDOUT, /* 8 */ 136 IOCLEANUPWAIT, /* 9 */ 137 IOCLEANUPTIMEDOUT,/*10 */ 138 DORESET, /* 11 */ 139 RESETCOMPLETE, /* 12 */ 140 RESETTIMEDOUT, /* 13 */ 141 DORECAL, /* 14 */ 142 RECALWAIT, /* 15 */ 143 RECALTIMEDOUT, /* 16 */ 144 RECALCOMPLETE, /* 17 */ 145 }; 146 147 /* software state, per controller */ 148 struct fdc_softc { 149 struct device sc_dev; /* boilerplate */ 150 bus_space_tag_t sc_bustag; 151 152 struct fd_softc *sc_fd[4]; /* pointers to children */ 153 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 154 enum fdc_state sc_state; 155 int sc_flags; 156 #define FDC_82077 0x01 157 #define FDC_NEEDHEADSETTLE 0x02 158 #define FDC_EIS 0x04 159 int sc_errors; /* number of retries so far */ 160 int sc_overruns; /* number of DMA overruns */ 161 int sc_cfg; /* current configuration */ 162 struct fdcio sc_io; 163 #define sc_handle sc_io.fdcio_handle 164 #define sc_reg_msr sc_io.fdcio_reg_msr 165 #define sc_reg_fifo sc_io.fdcio_reg_fifo 166 #define sc_reg_dor sc_io.fdcio_reg_dor 167 #define sc_reg_drs sc_io.fdcio_reg_msr 168 #define sc_itask sc_io.fdcio_itask 169 #define sc_istatus sc_io.fdcio_istatus 170 #define sc_data sc_io.fdcio_data 171 #define sc_tc sc_io.fdcio_tc 172 #define sc_nstat sc_io.fdcio_nstat 173 #define sc_status sc_io.fdcio_status 174 #define sc_intrcnt sc_io.fdcio_intrcnt 175 }; 176 177 #undef FDC_C_HANDLER 178 #ifndef FDC_C_HANDLER 179 extern struct fdcio *fdciop; 180 #endif 181 182 /* controller driver configuration */ 183 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 184 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 185 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 186 void fdcattach_obio __P((struct device *, struct device *, void *)); 187 188 void fdcattach __P((struct fdc_softc *, int)); 189 190 struct cfattach fdc_mainbus_ca = { 191 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 192 }; 193 struct cfattach fdc_obio_ca = { 194 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 195 }; 196 197 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 198 199 /* 200 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 201 * we tell them apart. 202 */ 203 struct fd_type { 204 int sectrac; /* sectors per track */ 205 int heads; /* number of heads */ 206 int seccyl; /* sectors per cylinder */ 207 int secsize; /* size code for sectors */ 208 int datalen; /* data len when secsize = 0 */ 209 int steprate; /* step rate and head unload time */ 210 int gap1; /* gap len between sectors */ 211 int gap2; /* formatting gap */ 212 int cylinders; /* total num of cylinders */ 213 int size; /* size of disk in sectors */ 214 int step; /* steps per cylinder */ 215 int rate; /* transfer speed code */ 216 int fillbyte; /* format fill byte */ 217 int interleave; /* interleave factor (formatting) */ 218 char *name; 219 }; 220 221 /* The order of entries in the following table is important -- BEWARE! */ 222 struct fd_type fd_types[] = { 223 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 224 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 226 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 227 }; 228 229 /* software state, per disk (with up to 4 disks per ctlr) */ 230 struct fd_softc { 231 struct device sc_dv; /* generic device info */ 232 struct disk sc_dk; /* generic disk info */ 233 234 struct fd_type *sc_deftype; /* default type descriptor */ 235 struct fd_type *sc_type; /* current type descriptor */ 236 237 daddr_t sc_blkno; /* starting block number */ 238 int sc_bcount; /* byte count left */ 239 int sc_skip; /* bytes already transferred */ 240 int sc_nblks; /* number of blocks currently tranferring */ 241 int sc_nbytes; /* number of bytes currently tranferring */ 242 243 int sc_drive; /* physical unit number */ 244 int sc_flags; 245 #define FD_OPEN 0x01 /* it's open */ 246 #define FD_MOTOR 0x02 /* motor should be on */ 247 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 248 int sc_cylin; /* where we think the head is */ 249 int sc_opts; /* user-set options */ 250 251 void *sc_sdhook; /* shutdownhook cookie */ 252 253 TAILQ_ENTRY(fd_softc) sc_drivechain; 254 int sc_ops; /* I/O ops since last switch */ 255 struct buf_queue sc_q; /* pending I/O requests */ 256 int sc_active; /* number of active I/O requests */ 257 }; 258 259 /* floppy driver configuration */ 260 int fdmatch __P((struct device *, struct cfdata *, void *)); 261 void fdattach __P((struct device *, struct device *, void *)); 262 263 struct cfattach fd_ca = { 264 sizeof(struct fd_softc), fdmatch, fdattach 265 }; 266 267 extern struct cfdriver fd_cd; 268 269 void fdgetdisklabel __P((dev_t)); 270 int fd_get_parms __P((struct fd_softc *)); 271 void fdstrategy __P((struct buf *)); 272 void fdstart __P((struct fd_softc *)); 273 int fdprint __P((void *, const char *)); 274 275 struct dkdriver fddkdriver = { fdstrategy }; 276 277 struct fd_type *fd_nvtotype __P((char *, int, int)); 278 void fd_set_motor __P((struct fdc_softc *fdc)); 279 void fd_motor_off __P((void *arg)); 280 void fd_motor_on __P((void *arg)); 281 int fdcresult __P((struct fdc_softc *fdc)); 282 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 283 void fdcstart __P((struct fdc_softc *fdc)); 284 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 285 void fdc_reset __P((struct fdc_softc *fdc)); 286 void fdctimeout __P((void *arg)); 287 void fdcpseudointr __P((void *arg)); 288 #ifdef FDC_C_HANDLER 289 int fdc_c_hwintr __P((void *)); 290 #else 291 void fdchwintr __P((void)); 292 #endif 293 int fdcswintr __P((void *)); 294 int fdcstate __P((struct fdc_softc *)); 295 void fdcretry __P((struct fdc_softc *fdc)); 296 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 297 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 298 void fd_do_eject __P((struct fd_softc *)); 299 void fd_mountroot_hook __P((struct device *)); 300 static int fdconf __P((struct fdc_softc *)); 301 static void establish_chip_type __P(( 302 struct fdc_softc *, 303 bus_space_tag_t, 304 bus_type_t, 305 bus_addr_t, 306 bus_size_t, 307 bus_space_handle_t)); 308 309 310 #if PIL_FDSOFT == 4 311 #define IE_FDSOFT IE_L4 312 #else 313 #error 4 314 #endif 315 316 #ifdef FDC_C_HANDLER 317 #if defined(SUN4M) 318 #define FD_SET_SWINTR do { \ 319 if (CPU_ISSUN4M) \ 320 raise(0, PIL_FDSOFT); \ 321 else \ 322 ienab_bis(IE_L4); \ 323 } while(0) 324 #else 325 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 326 #endif /* defined(SUN4M) */ 327 #endif /* FDC_C_HANDLER */ 328 329 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 330 331 int 332 fdcmatch_mainbus(parent, match, aux) 333 struct device *parent; 334 struct cfdata *match; 335 void *aux; 336 { 337 struct mainbus_attach_args *ma = aux; 338 339 /* 340 * Floppy controller is on mainbus on sun4c. 341 */ 342 if (!CPU_ISSUN4C) 343 return (0); 344 345 /* sun4c PROMs call the controller "fd" */ 346 if (strcmp("fd", ma->ma_name) != 0) 347 return (0); 348 349 return (bus_space_probe(ma->ma_bustag, 350 ma->ma_iospace, 351 ma->ma_paddr, 352 1, /* probe size */ 353 0, /* offset */ 354 0, /* flags */ 355 NULL, NULL)); 356 } 357 358 int 359 fdcmatch_obio(parent, match, aux) 360 struct device *parent; 361 struct cfdata *match; 362 void *aux; 363 { 364 union obio_attach_args *uoba = aux; 365 struct sbus_attach_args *sa; 366 367 /* 368 * Floppy controller is on obio on sun4m. 369 */ 370 if (uoba->uoba_isobio4 != 0) 371 return (0); 372 373 sa = &uoba->uoba_sbus; 374 375 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 376 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 377 return (0); 378 379 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 380 1, /* probe size */ 381 0, /* offset */ 382 0, /* flags */ 383 NULL, NULL)); 384 } 385 386 static void 387 establish_chip_type(fdc, tag, type, addr, size, handle) 388 struct fdc_softc *fdc; 389 bus_space_tag_t tag; 390 bus_type_t type; 391 bus_addr_t addr; 392 bus_size_t size; 393 bus_space_handle_t handle; 394 { 395 u_int8_t v; 396 397 /* 398 * This hack from Chris Torek: apparently DOR really 399 * addresses MSR/DRS on a 82072. 400 * We used to rely on the VERSION command to tell the 401 * difference (which did not work). 402 */ 403 404 /* First, check the size of the register bank */ 405 if (size < 8) 406 /* It isn't a 82077 */ 407 return; 408 409 /* Then probe the DOR register offset */ 410 if (bus_space_probe(tag, type, addr, 411 1, /* probe size */ 412 FDREG77_DOR, /* offset */ 413 0, /* flags */ 414 NULL, NULL) == 0) { 415 416 /* It isn't a 82077 */ 417 return; 418 } 419 420 v = bus_space_read_1(tag, handle, FDREG77_DOR); 421 if (v == NE7_RQM) { 422 /* 423 * Value in DOR looks like it's really MSR 424 */ 425 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 426 v = bus_space_read_1(tag, handle, FDREG77_DOR); 427 if (v == NE7_RQM) { 428 /* 429 * The value in the DOR didn't stick; 430 * it isn't a 82077 431 */ 432 return; 433 } 434 } 435 436 fdc->sc_flags |= FDC_82077; 437 } 438 439 /* 440 * Arguments passed between fdcattach and fdprobe. 441 */ 442 struct fdc_attach_args { 443 int fa_drive; 444 struct fd_type *fa_deftype; 445 }; 446 447 /* 448 * Print the location of a disk drive (called just before attaching the 449 * the drive). If `fdc' is not NULL, the drive was found but was not 450 * in the system config file; print the drive name as well. 451 * Return QUIET (config_find ignores this if the device was configured) to 452 * avoid printing `fdN not configured' messages. 453 */ 454 int 455 fdprint(aux, fdc) 456 void *aux; 457 const char *fdc; 458 { 459 register struct fdc_attach_args *fa = aux; 460 461 if (!fdc) 462 printf(" drive %d", fa->fa_drive); 463 return (QUIET); 464 } 465 466 /* 467 * Configure several parameters and features on the FDC. 468 * Return 0 on success. 469 */ 470 static int 471 fdconf(fdc) 472 struct fdc_softc *fdc; 473 { 474 int vroom; 475 476 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 477 return (-1); 478 479 /* 480 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 481 * the PROM thinks is appropriate. 482 */ 483 if ((vroom = fdc->sc_status[7]) == 0) 484 vroom = 0x64; 485 486 /* Configure controller to use FIFO and Implied Seek */ 487 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 488 return (-1); 489 if (fdc_wrfifo(fdc, vroom) != 0) 490 return (-1); 491 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 492 return (-1); 493 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 494 return (-1); 495 /* No result phase for the NE7CMD_CFG command */ 496 497 if ((fdc->sc_flags & FDC_82077) != 0) { 498 /* Lock configuration across soft resets. */ 499 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 500 fdcresult(fdc) != 1) { 501 #ifdef DEBUG 502 printf("fdconf: CFGLOCK failed"); 503 #endif 504 return (-1); 505 } 506 } 507 508 return (0); 509 #if 0 510 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 511 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 512 if (fdc_debug) 513 printf("[version cmd]"); 514 } 515 #endif 516 } 517 518 void 519 fdcattach_mainbus(parent, self, aux) 520 struct device *parent, *self; 521 void *aux; 522 { 523 struct fdc_softc *fdc = (void *)self; 524 struct mainbus_attach_args *ma = aux; 525 526 fdc->sc_bustag = ma->ma_bustag; 527 528 if (ma->ma_promvaddr != 0) 529 fdc->sc_handle = (bus_space_handle_t)ma->ma_promvaddr; 530 else { 531 if (bus_space_map2( 532 ma->ma_bustag, 533 ma->ma_iospace, 534 ma->ma_paddr, 535 ma->ma_size, 536 BUS_SPACE_MAP_LINEAR, 537 0, 538 &fdc->sc_handle) != 0) { 539 printf("%s: cannot map registers\n", self->dv_xname); 540 return; 541 } 542 } 543 544 establish_chip_type(fdc, 545 ma->ma_bustag, 546 ma->ma_iospace, 547 ma->ma_paddr, 548 ma->ma_size, 549 fdc->sc_handle); 550 551 fdcattach(fdc, ma->ma_pri); 552 } 553 554 void 555 fdcattach_obio(parent, self, aux) 556 struct device *parent, *self; 557 void *aux; 558 { 559 struct fdc_softc *fdc = (void *)self; 560 union obio_attach_args *uoba = aux; 561 struct sbus_attach_args *sa = &uoba->uoba_sbus; 562 563 fdc->sc_bustag = sa->sa_bustag; 564 565 if (sa->sa_npromvaddrs != 0) 566 fdc->sc_handle = (bus_space_handle_t)sa->sa_promvaddrs[0]; 567 else { 568 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 569 sa->sa_offset, 570 sa->sa_size, 571 BUS_SPACE_MAP_LINEAR, 572 0, 573 &fdc->sc_handle) != 0) { 574 printf("%s: cannot map control registers\n", 575 self->dv_xname); 576 return; 577 } 578 } 579 580 establish_chip_type(fdc, 581 sa->sa_bustag, 582 sa->sa_slot, 583 sa->sa_offset, 584 sa->sa_size, 585 fdc->sc_handle); 586 587 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 588 printf(": no drives attached\n"); 589 return; 590 } 591 592 if (sa->sa_nintr != 0) 593 fdcattach(fdc, sa->sa_pri); 594 } 595 596 void 597 fdcattach(fdc, pri) 598 struct fdc_softc *fdc; 599 int pri; 600 { 601 struct fdc_attach_args fa; 602 char code; 603 604 fdc->sc_state = DEVIDLE; 605 fdc->sc_itask = FDC_ITASK_NONE; 606 fdc->sc_istatus = FDC_ISTATUS_NONE; 607 fdc->sc_flags |= FDC_EIS; 608 TAILQ_INIT(&fdc->sc_drives); 609 610 if ((fdc->sc_flags & FDC_82077) != 0) { 611 fdc->sc_reg_msr = FDREG77_MSR; 612 fdc->sc_reg_fifo = FDREG77_FIFO; 613 fdc->sc_reg_dor = FDREG77_DOR; 614 code = '7'; 615 } else { 616 fdc->sc_reg_msr = FDREG72_MSR; 617 fdc->sc_reg_fifo = FDREG72_FIFO; 618 fdc->sc_reg_dor = 0; 619 code = '2'; 620 } 621 622 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 623 624 /* 625 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 626 * Note: CFG_EFIFO is active-low, initial threshold value: 8 627 */ 628 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 629 if (fdconf(fdc) != 0) { 630 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 631 return; 632 } 633 634 #ifdef FDC_C_HANDLER 635 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 636 fdc_c_hwintr, fdc); 637 #else 638 fdciop = &fdc->sc_io; 639 (void)bus_intr_establish(fdc->sc_bustag, pri, 640 BUS_INTR_ESTABLISH_FASTTRAP, 641 (int (*) __P((void *)))fdchwintr, NULL); 642 #endif 643 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 644 BUS_INTR_ESTABLISH_SOFTINTR, 645 fdcswintr, fdc); 646 647 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 648 649 /* physical limit: four drives per controller. */ 650 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 651 fa.fa_deftype = NULL; /* unknown */ 652 fa.fa_deftype = &fd_types[0]; /* XXX */ 653 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 654 } 655 } 656 657 int 658 fdmatch(parent, match, aux) 659 struct device *parent; 660 struct cfdata *match; 661 void *aux; 662 { 663 struct fdc_softc *fdc = (void *)parent; 664 bus_space_tag_t t = fdc->sc_bustag; 665 bus_space_handle_t h = fdc->sc_handle; 666 struct fdc_attach_args *fa = aux; 667 int drive = fa->fa_drive; 668 int n, ok; 669 670 if (drive > 0) 671 /* XXX - for now, punt on more than one drive */ 672 return (0); 673 674 if (fdc->sc_flags & FDC_82077) { 675 /* select drive and turn on motor */ 676 bus_space_write_1(t, h, fdc->sc_reg_dor, 677 drive | FDO_FRST | FDO_MOEN(drive)); 678 /* wait for motor to spin up */ 679 delay(250000); 680 } else { 681 auxregbisc(AUXIO4C_FDS, 0); 682 } 683 fdc->sc_nstat = 0; 684 fdc_wrfifo(fdc, NE7CMD_RECAL); 685 fdc_wrfifo(fdc, drive); 686 687 /* Wait for recalibration to complete */ 688 for (n = 0; n < 10000; n++) { 689 u_int8_t v; 690 691 delay(1000); 692 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 693 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 694 /* wait a bit longer till device *really* is ready */ 695 delay(100000); 696 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 697 break; 698 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 699 /* 700 * Got `invalid command'; we interpret it 701 * to mean that the re-calibrate hasn't in 702 * fact finished yet 703 */ 704 continue; 705 break; 706 } 707 } 708 n = fdc->sc_nstat; 709 #ifdef FD_DEBUG 710 if (fdc_debug) { 711 int i; 712 printf("fdprobe: %d stati:", n); 713 for (i = 0; i < n; i++) 714 printf(" 0x%x", fdc->sc_status[i]); 715 printf("\n"); 716 } 717 #endif 718 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 719 720 /* turn off motor */ 721 if (fdc->sc_flags & FDC_82077) { 722 /* deselect drive and turn motor off */ 723 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 724 } else { 725 auxregbisc(0, AUXIO4C_FDS); 726 } 727 728 return (ok); 729 } 730 731 /* 732 * Controller is working, and drive responded. Attach it. 733 */ 734 void 735 fdattach(parent, self, aux) 736 struct device *parent, *self; 737 void *aux; 738 { 739 struct fdc_softc *fdc = (void *)parent; 740 struct fd_softc *fd = (void *)self; 741 struct fdc_attach_args *fa = aux; 742 struct fd_type *type = fa->fa_deftype; 743 int drive = fa->fa_drive; 744 745 /* XXX Allow `flags' to override device type? */ 746 747 if (type) 748 printf(": %s %d cyl, %d head, %d sec\n", type->name, 749 type->cylinders, type->heads, type->sectrac); 750 else 751 printf(": density unknown\n"); 752 753 BUFQ_INIT(&fd->sc_q); 754 fd->sc_cylin = -1; 755 fd->sc_drive = drive; 756 fd->sc_deftype = type; 757 fdc->sc_fd[drive] = fd; 758 759 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 760 fdc_wrfifo(fdc, type->steprate); 761 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 762 763 /* 764 * Initialize and attach the disk structure. 765 */ 766 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 767 fd->sc_dk.dk_driver = &fddkdriver; 768 disk_attach(&fd->sc_dk); 769 770 /* 771 * Establish a mountroot_hook anyway in case we booted 772 * with RB_ASKNAME and get selected as the boot device. 773 */ 774 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 775 776 /* Make sure the drive motor gets turned off at shutdown time. */ 777 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 778 779 /* XXX Need to do some more fiddling with sc_dk. */ 780 dk_establish(&fd->sc_dk, &fd->sc_dv); 781 } 782 783 __inline struct fd_type * 784 fd_dev_to_type(fd, dev) 785 struct fd_softc *fd; 786 dev_t dev; 787 { 788 int type = FDTYPE(dev); 789 790 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 791 return (NULL); 792 return (type ? &fd_types[type - 1] : fd->sc_deftype); 793 } 794 795 void 796 fdstrategy(bp) 797 register struct buf *bp; /* IO operation to perform */ 798 { 799 struct fd_softc *fd; 800 int unit = FDUNIT(bp->b_dev); 801 int sz; 802 int s; 803 804 /* Valid unit, controller, and request? */ 805 if (unit >= fd_cd.cd_ndevs || 806 (fd = fd_cd.cd_devs[unit]) == 0 || 807 bp->b_blkno < 0 || 808 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 809 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 810 (bp->b_flags & B_FORMAT) == 0)) { 811 bp->b_error = EINVAL; 812 goto bad; 813 } 814 815 /* If it's a null transfer, return immediately. */ 816 if (bp->b_bcount == 0) 817 goto done; 818 819 sz = howmany(bp->b_bcount, DEV_BSIZE); 820 821 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 822 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 823 - bp->b_blkno; 824 if (sz == 0) { 825 /* If exactly at end of disk, return EOF. */ 826 bp->b_resid = bp->b_bcount; 827 goto done; 828 } 829 if (sz < 0) { 830 /* If past end of disk, return EINVAL. */ 831 bp->b_error = EINVAL; 832 goto bad; 833 } 834 /* Otherwise, truncate request. */ 835 bp->b_bcount = sz << DEV_BSHIFT; 836 } 837 838 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 839 (FD_BSIZE(fd) * fd->sc_type->seccyl); 840 841 #ifdef FD_DEBUG 842 if (fdc_debug > 1) 843 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 844 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 845 #endif 846 847 /* Queue transfer on drive, activate drive and controller if idle. */ 848 s = splbio(); 849 disksort_cylinder(&fd->sc_q, bp); 850 untimeout(fd_motor_off, fd); /* a good idea */ 851 if (fd->sc_active == 0) 852 fdstart(fd); 853 #ifdef DIAGNOSTIC 854 else { 855 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 856 if (fdc->sc_state == DEVIDLE) { 857 printf("fdstrategy: controller inactive\n"); 858 fdcstart(fdc); 859 } 860 } 861 #endif 862 splx(s); 863 return; 864 865 bad: 866 bp->b_flags |= B_ERROR; 867 done: 868 /* Toss transfer; we're done early. */ 869 biodone(bp); 870 } 871 872 void 873 fdstart(fd) 874 struct fd_softc *fd; 875 { 876 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 877 int active = fdc->sc_drives.tqh_first != 0; 878 879 /* Link into controller queue. */ 880 fd->sc_active = 1; 881 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 882 883 /* If controller not already active, start it. */ 884 if (!active) 885 fdcstart(fdc); 886 } 887 888 void 889 fdfinish(fd, bp) 890 struct fd_softc *fd; 891 struct buf *bp; 892 { 893 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 894 895 /* 896 * Move this drive to the end of the queue to give others a `fair' 897 * chance. We only force a switch if N operations are completed while 898 * another drive is waiting to be serviced, since there is a long motor 899 * startup delay whenever we switch. 900 */ 901 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 902 fd->sc_ops = 0; 903 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 904 if (BUFQ_NEXT(bp) != NULL) { 905 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 906 } else 907 fd->sc_active = 0; 908 } 909 bp->b_resid = fd->sc_bcount; 910 fd->sc_skip = 0; 911 BUFQ_REMOVE(&fd->sc_q, bp); 912 913 biodone(bp); 914 /* turn off motor 5s from now */ 915 timeout(fd_motor_off, fd, 5 * hz); 916 fdc->sc_state = DEVIDLE; 917 } 918 919 void 920 fdc_reset(fdc) 921 struct fdc_softc *fdc; 922 { 923 bus_space_tag_t t = fdc->sc_bustag; 924 bus_space_handle_t h = fdc->sc_handle; 925 926 if (fdc->sc_flags & FDC_82077) { 927 bus_space_write_1(t, h, fdc->sc_reg_dor, 928 FDO_FDMAEN | FDO_MOEN(0)); 929 } 930 931 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 932 delay(10); 933 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 934 935 if (fdc->sc_flags & FDC_82077) { 936 bus_space_write_1(t, h, fdc->sc_reg_dor, 937 FDO_FRST | FDO_FDMAEN | FDO_DS); 938 } 939 #ifdef FD_DEBUG 940 if (fdc_debug) 941 printf("fdc reset\n"); 942 #endif 943 } 944 945 void 946 fd_set_motor(fdc) 947 struct fdc_softc *fdc; 948 { 949 struct fd_softc *fd; 950 u_char status; 951 int n; 952 953 if (fdc->sc_flags & FDC_82077) { 954 status = FDO_FRST | FDO_FDMAEN; 955 if ((fd = fdc->sc_drives.tqh_first) != NULL) 956 status |= fd->sc_drive; 957 958 for (n = 0; n < 4; n++) 959 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 960 status |= FDO_MOEN(n); 961 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 962 fdc->sc_reg_dor, status); 963 } else { 964 int on = 0; 965 966 for (n = 0; n < 4; n++) 967 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 968 on = 1; 969 if (on) { 970 auxregbisc(AUXIO4C_FDS, 0); 971 } else { 972 auxregbisc(0, AUXIO4C_FDS); 973 } 974 } 975 } 976 977 void 978 fd_motor_off(arg) 979 void *arg; 980 { 981 struct fd_softc *fd = arg; 982 int s; 983 984 s = splbio(); 985 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 986 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 987 splx(s); 988 } 989 990 void 991 fd_motor_on(arg) 992 void *arg; 993 { 994 struct fd_softc *fd = arg; 995 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 996 int s; 997 998 s = splbio(); 999 fd->sc_flags &= ~FD_MOTOR_WAIT; 1000 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1001 (void) fdcstate(fdc); 1002 splx(s); 1003 } 1004 1005 /* 1006 * Get status bytes off the FDC after a command has finished 1007 * Returns the number of status bytes read; -1 on error. 1008 * The return value is also stored in `sc_nstat'. 1009 */ 1010 int 1011 fdcresult(fdc) 1012 struct fdc_softc *fdc; 1013 { 1014 bus_space_tag_t t = fdc->sc_bustag; 1015 bus_space_handle_t h = fdc->sc_handle; 1016 int j, n = 0; 1017 1018 for (j = 10000; j; j--) { 1019 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1020 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1021 if (v == NE7_RQM) 1022 return (fdc->sc_nstat = n); 1023 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1024 if (n >= sizeof(fdc->sc_status)) { 1025 log(LOG_ERR, "fdcresult: overrun\n"); 1026 return (-1); 1027 } 1028 fdc->sc_status[n++] = 1029 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1030 } else 1031 delay(1); 1032 } 1033 log(LOG_ERR, "fdcresult: timeout\n"); 1034 return (fdc->sc_nstat = -1); 1035 } 1036 1037 /* 1038 * Write a command byte to the FDC. 1039 * Returns 0 on success; -1 on failure (i.e. timeout) 1040 */ 1041 int 1042 fdc_wrfifo(fdc, x) 1043 struct fdc_softc *fdc; 1044 u_int8_t x; 1045 { 1046 bus_space_tag_t t = fdc->sc_bustag; 1047 bus_space_handle_t h = fdc->sc_handle; 1048 int i; 1049 1050 for (i = 100000; i-- > 0;) { 1051 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1052 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) 1053 break; 1054 delay(1); 1055 } 1056 if (i <= 0) 1057 return (-1); 1058 1059 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1060 return (0); 1061 } 1062 1063 int 1064 fdopen(dev, flags, fmt, p) 1065 dev_t dev; 1066 int flags, fmt; 1067 struct proc *p; 1068 { 1069 int unit, pmask; 1070 struct fd_softc *fd; 1071 struct fd_type *type; 1072 1073 unit = FDUNIT(dev); 1074 if (unit >= fd_cd.cd_ndevs) 1075 return (ENXIO); 1076 fd = fd_cd.cd_devs[unit]; 1077 if (fd == NULL) 1078 return (ENXIO); 1079 type = fd_dev_to_type(fd, dev); 1080 if (type == NULL) 1081 return (ENXIO); 1082 1083 if ((fd->sc_flags & FD_OPEN) != 0 && 1084 fd->sc_type != type) 1085 return (EBUSY); 1086 1087 fd->sc_type = type; 1088 fd->sc_cylin = -1; 1089 fd->sc_flags |= FD_OPEN; 1090 1091 /* 1092 * Only update the disklabel if we're not open anywhere else. 1093 */ 1094 if (fd->sc_dk.dk_openmask == 0) 1095 fdgetdisklabel(dev); 1096 1097 pmask = (1 << DISKPART(dev)); 1098 1099 switch (fmt) { 1100 case S_IFCHR: 1101 fd->sc_dk.dk_copenmask |= pmask; 1102 break; 1103 1104 case S_IFBLK: 1105 fd->sc_dk.dk_bopenmask |= pmask; 1106 break; 1107 } 1108 fd->sc_dk.dk_openmask = 1109 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1110 1111 return (0); 1112 } 1113 1114 int 1115 fdclose(dev, flags, fmt, p) 1116 dev_t dev; 1117 int flags, fmt; 1118 struct proc *p; 1119 { 1120 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1121 int pmask = (1 << DISKPART(dev)); 1122 1123 fd->sc_flags &= ~FD_OPEN; 1124 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1125 1126 switch (fmt) { 1127 case S_IFCHR: 1128 fd->sc_dk.dk_copenmask &= ~pmask; 1129 break; 1130 1131 case S_IFBLK: 1132 fd->sc_dk.dk_bopenmask &= ~pmask; 1133 break; 1134 } 1135 fd->sc_dk.dk_openmask = 1136 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1137 1138 return (0); 1139 } 1140 1141 int 1142 fdread(dev, uio, flag) 1143 dev_t dev; 1144 struct uio *uio; 1145 int flag; 1146 { 1147 1148 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1149 } 1150 1151 int 1152 fdwrite(dev, uio, flag) 1153 dev_t dev; 1154 struct uio *uio; 1155 int flag; 1156 { 1157 1158 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1159 } 1160 1161 void 1162 fdcstart(fdc) 1163 struct fdc_softc *fdc; 1164 { 1165 1166 #ifdef DIAGNOSTIC 1167 /* only got here if controller's drive queue was inactive; should 1168 be in idle state */ 1169 if (fdc->sc_state != DEVIDLE) { 1170 printf("fdcstart: not idle\n"); 1171 return; 1172 } 1173 #endif 1174 (void) fdcstate(fdc); 1175 } 1176 1177 void 1178 fdcstatus(fdc, s) 1179 struct fdc_softc *fdc; 1180 char *s; 1181 { 1182 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1183 int n; 1184 char bits[64]; 1185 1186 /* Just print last status */ 1187 n = fdc->sc_nstat; 1188 1189 #if 0 1190 /* 1191 * A 82072 seems to return <invalid command> on 1192 * gratuitous Sense Interrupt commands. 1193 */ 1194 if (n == 0 && (fdc->sc_flags & FDC_82077)) { 1195 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1196 (void) fdcresult(fdc); 1197 n = 2; 1198 } 1199 #endif 1200 1201 printf("%s: %s: state %d", 1202 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1203 1204 switch (n) { 1205 case 0: 1206 printf("\n"); 1207 break; 1208 case 2: 1209 printf(" (st0 %s cyl %d)\n", 1210 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1211 bits, sizeof(bits)), fdc->sc_status[1]); 1212 break; 1213 case 7: 1214 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1215 NE7_ST0BITS, bits, sizeof(bits))); 1216 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1217 NE7_ST1BITS, bits, sizeof(bits))); 1218 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1219 NE7_ST2BITS, bits, sizeof(bits))); 1220 printf(" cyl %d head %d sec %d)\n", 1221 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1222 break; 1223 #ifdef DIAGNOSTIC 1224 default: 1225 printf(" fdcstatus: weird size: %d\n", n); 1226 break; 1227 #endif 1228 } 1229 } 1230 1231 void 1232 fdctimeout(arg) 1233 void *arg; 1234 { 1235 struct fdc_softc *fdc = arg; 1236 struct fd_softc *fd; 1237 int s; 1238 1239 s = splbio(); 1240 fd = fdc->sc_drives.tqh_first; 1241 if (fd == NULL) { 1242 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1243 fdc->sc_dev.dv_xname, 1244 fdc->sc_state, fdc->sc_istatus); 1245 fdc->sc_state = DEVIDLE; 1246 goto out; 1247 } 1248 1249 /* 1250 * When waiting for I/O don't report the timeout now; there 1251 * might just be no floppy disk in the drive. 1252 */ 1253 if (fdc->sc_state != IOCOMPLETE) 1254 fdcstatus(fdc, "timeout"); 1255 1256 if (BUFQ_FIRST(&fd->sc_q) != NULL) 1257 fdc->sc_state++; 1258 else 1259 fdc->sc_state = DEVIDLE; 1260 1261 (void) fdcstate(fdc); 1262 out: 1263 splx(s); 1264 1265 } 1266 1267 void 1268 fdcpseudointr(arg) 1269 void *arg; 1270 { 1271 struct fdc_softc *fdc = arg; 1272 int s; 1273 1274 /* Just ensure it has the right spl. */ 1275 s = splbio(); 1276 (void) fdcstate(fdc); 1277 splx(s); 1278 } 1279 1280 1281 #ifdef FDC_C_HANDLER 1282 /* 1283 * hardware interrupt entry point: must be converted to `fast' 1284 * (in-window) handler. 1285 */ 1286 int 1287 fdc_c_hwintr(arg) 1288 void *arg; 1289 { 1290 struct fdc_softc *fdc = arg; 1291 bus_space_tag_t t = fdc->sc_bustag; 1292 bus_space_handle_t h = fdc->sc_handle; 1293 1294 switch (fdc->sc_itask) { 1295 case FDC_ITASK_NONE: 1296 return (0); 1297 case FDC_ITASK_SENSI: 1298 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1299 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1300 else 1301 fdc->sc_istatus = FDC_ISTATUS_DONE; 1302 FD_SET_SWINTR; 1303 return (1); 1304 case FDC_ITASK_DMA: 1305 /* Proceed with pseudo-dma below */ 1306 break; 1307 default: 1308 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1309 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1310 FD_SET_SWINTR; 1311 return (1); 1312 } 1313 1314 /* 1315 * Pseudo DMA in progress 1316 */ 1317 for (;;) { 1318 u_int8_t msr; 1319 1320 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1321 1322 if ((msr & NE7_RQM) == 0) 1323 /* That's all this round */ 1324 break; 1325 1326 if ((msr & NE7_NDM) == 0) { 1327 fdcresult(fdc); 1328 fdc->sc_istatus = FDC_ISTATUS_DONE; 1329 FD_SET_SWINTR; 1330 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1331 break; 1332 } 1333 1334 /* Another byte can be transferred */ 1335 if ((msr & NE7_DIO) != 0) 1336 *fdc->sc_data = 1337 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1338 else 1339 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1340 *fdc->sc_data); 1341 1342 fdc->sc_data++; 1343 if (--fdc->sc_tc == 0) { 1344 fdc->sc_istatus = FDC_ISTATUS_DONE; 1345 FTC_FLIP; 1346 fdcresult(fdc); 1347 FD_SET_SWINTR; 1348 break; 1349 } 1350 } 1351 return (1); 1352 } 1353 #endif 1354 1355 int 1356 fdcswintr(arg) 1357 void *arg; 1358 { 1359 struct fdc_softc *fdc = arg; 1360 int s; 1361 1362 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1363 /* This (software) interrupt is not for us */ 1364 return (0); 1365 1366 switch (fdc->sc_istatus) { 1367 case FDC_ISTATUS_ERROR: 1368 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1369 break; 1370 case FDC_ISTATUS_SPURIOUS: 1371 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1372 break; 1373 } 1374 1375 s = splbio(); 1376 fdcstate(fdc); 1377 splx(s); 1378 return (1); 1379 } 1380 1381 int 1382 fdcstate(fdc) 1383 struct fdc_softc *fdc; 1384 { 1385 #define st0 fdc->sc_status[0] 1386 #define st1 fdc->sc_status[1] 1387 #define cyl fdc->sc_status[1] 1388 #define FDC_WRFIFO(fdc, c) do { \ 1389 if (fdc_wrfifo(fdc, (c))) { \ 1390 goto xxx; \ 1391 } \ 1392 } while(0) 1393 1394 struct fd_softc *fd; 1395 struct buf *bp; 1396 int read, head, sec, nblks; 1397 struct fd_type *type; 1398 struct ne7_fd_formb *finfo = NULL; 1399 1400 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1401 fdc->sc_state = DORESET; 1402 1403 /* Clear I task/status field */ 1404 fdc->sc_istatus = FDC_ISTATUS_NONE; 1405 fdc->sc_itask = FDC_ITASK_NONE; 1406 1407 loop: 1408 /* Is there a drive for the controller to do a transfer with? */ 1409 fd = fdc->sc_drives.tqh_first; 1410 if (fd == NULL) { 1411 fdc->sc_state = DEVIDLE; 1412 return (0); 1413 } 1414 1415 /* Is there a transfer to this drive? If not, deactivate drive. */ 1416 bp = BUFQ_FIRST(&fd->sc_q); 1417 if (bp == NULL) { 1418 fd->sc_ops = 0; 1419 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1420 fd->sc_active = 0; 1421 goto loop; 1422 } 1423 1424 if (bp->b_flags & B_FORMAT) 1425 finfo = (struct ne7_fd_formb *)bp->b_data; 1426 1427 switch (fdc->sc_state) { 1428 case DEVIDLE: 1429 fdc->sc_errors = 0; 1430 fd->sc_skip = 0; 1431 fd->sc_bcount = bp->b_bcount; 1432 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1433 untimeout(fd_motor_off, fd); 1434 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1435 fdc->sc_state = MOTORWAIT; 1436 return (1); 1437 } 1438 if ((fd->sc_flags & FD_MOTOR) == 0) { 1439 /* Turn on the motor, being careful about pairing. */ 1440 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1441 if (ofd && ofd->sc_flags & FD_MOTOR) { 1442 untimeout(fd_motor_off, ofd); 1443 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1444 } 1445 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1446 fd_set_motor(fdc); 1447 fdc->sc_state = MOTORWAIT; 1448 if (fdc->sc_flags & FDC_82077) { /* XXX */ 1449 /* Allow .25s for motor to stabilize. */ 1450 timeout(fd_motor_on, fd, hz / 4); 1451 } else { 1452 fd->sc_flags &= ~FD_MOTOR_WAIT; 1453 goto loop; 1454 } 1455 return (1); 1456 } 1457 /* Make sure the right drive is selected. */ 1458 fd_set_motor(fdc); 1459 1460 /*FALLTHROUGH*/ 1461 case DOSEEK: 1462 doseek: 1463 if ((fdc->sc_flags & FDC_EIS) && 1464 (bp->b_flags & B_FORMAT) == 0) { 1465 fd->sc_cylin = bp->b_cylinder; 1466 /* We use implied seek */ 1467 goto doio; 1468 } 1469 1470 if (fd->sc_cylin == bp->b_cylinder) 1471 goto doio; 1472 1473 fd->sc_cylin = -1; 1474 fdc->sc_state = SEEKWAIT; 1475 fdc->sc_nstat = 0; 1476 1477 fd->sc_dk.dk_seek++; 1478 1479 disk_busy(&fd->sc_dk); 1480 timeout(fdctimeout, fdc, 4 * hz); 1481 1482 /* specify command */ 1483 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1484 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1485 /* XXX head load time == 6ms */ 1486 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1487 1488 fdc->sc_itask = FDC_ITASK_SENSEI; 1489 /* seek function */ 1490 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1491 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1492 FDC_WRFIFO(fdc, bp->b_cylin * fd->sc_type->step); 1493 return (1); 1494 1495 case DOIO: 1496 doio: 1497 if (finfo != NULL) 1498 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1499 (char *)finfo; 1500 type = fd->sc_type; 1501 sec = fd->sc_blkno % type->seccyl; 1502 nblks = type->seccyl - sec; 1503 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1504 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1505 fd->sc_nblks = nblks; 1506 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1507 head = sec / type->sectrac; 1508 sec -= head * type->sectrac; 1509 #ifdef DIAGNOSTIC 1510 {int block; 1511 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1512 if (block != fd->sc_blkno) { 1513 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1514 #ifdef DDB 1515 Debugger(); 1516 #endif 1517 }} 1518 #endif 1519 read = bp->b_flags & B_READ; 1520 1521 /* Setup for pseudo DMA */ 1522 fdc->sc_data = bp->b_data + fd->sc_skip; 1523 fdc->sc_tc = fd->sc_nbytes; 1524 1525 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1526 fdc->sc_reg_drs, type->rate); 1527 #ifdef FD_DEBUG 1528 if (fdc_debug > 1) 1529 printf("fdcintr: %s drive %d " 1530 "track %d head %d sec %d nblks %d\n", 1531 finfo ? "format" : 1532 (read ? "read" : "write"), 1533 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1534 #endif 1535 fdc->sc_state = IOCOMPLETE; 1536 fdc->sc_itask = FDC_ITASK_DMA; 1537 fdc->sc_nstat = 0; 1538 1539 disk_busy(&fd->sc_dk); 1540 1541 /* allow 3 seconds for operation */ 1542 timeout(fdctimeout, fdc, 3 * hz); 1543 1544 if (finfo != NULL) { 1545 /* formatting */ 1546 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1547 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1548 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1549 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1550 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1551 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1552 } else { 1553 if (read) 1554 FDC_WRFIFO(fdc, NE7CMD_READ); 1555 else 1556 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1557 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1558 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1559 FDC_WRFIFO(fdc, head); 1560 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1561 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1562 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1563 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1564 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1565 } 1566 1567 return (1); /* will return later */ 1568 1569 case SEEKWAIT: 1570 untimeout(fdctimeout, fdc); 1571 fdc->sc_state = SEEKCOMPLETE; 1572 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1573 /* allow 1/50 second for heads to settle */ 1574 timeout(fdcpseudointr, fdc, hz / 50); 1575 return (1); /* will return later */ 1576 } 1577 /*FALLTHROUGH*/ 1578 case SEEKCOMPLETE: 1579 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1580 1581 /* Make sure seek really happened. */ 1582 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1583 cyl != bp->b_cylinder * fd->sc_type->step) { 1584 #ifdef FD_DEBUG 1585 if (fdc_debug) 1586 fdcstatus(fdc, "seek failed"); 1587 #endif 1588 fdcretry(fdc); 1589 goto loop; 1590 } 1591 fd->sc_cylin = bp->b_cylinder; 1592 goto doio; 1593 1594 case IOTIMEDOUT: 1595 /* 1596 * Try to abort the I/O operation without resetting 1597 * the chip first. Poke TC and arrange to pick up 1598 * the timed out I/O command's status. 1599 */ 1600 fdc->sc_itask = FDC_ITASK_RESULT; 1601 fdc->sc_state = IOCLEANUPWAIT; 1602 fdc->sc_nstat = 0; 1603 /* 1/2 second should be enough */ 1604 timeout(fdctimeout, fdc, hz/10); 1605 FTC_FLIP; 1606 return (1); 1607 1608 case IOCLEANUPTIMEDOUT: 1609 case SEEKTIMEDOUT: 1610 case RECALTIMEDOUT: 1611 case RESETTIMEDOUT: 1612 /* All other timeouts always roll through to a chip reset */ 1613 fdcretry(fdc); 1614 1615 /* Force reset, no matter what fdcretry() says */ 1616 fdc->sc_state = DORESET; 1617 goto loop; 1618 1619 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1620 untimeout(fdctimeout, fdc); 1621 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1622 fdcretry(fdc); 1623 goto loop; 1624 1625 case IOCOMPLETE: /* IO DONE, post-analyze */ 1626 untimeout(fdctimeout, fdc); 1627 1628 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1629 1630 if (fdc->sc_nstat != 7 || st1 != 0 || 1631 ((st0 & 0xf8) != 0 && 1632 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1633 #ifdef FD_DEBUG 1634 if (fdc_debug) { 1635 fdcstatus(fdc, 1636 bp->b_flags & B_READ 1637 ? "read failed" : "write failed"); 1638 printf("blkno %d nblks %d nstat %d tc %d\n", 1639 fd->sc_blkno, fd->sc_nblks, 1640 fdc->sc_nstat, fdc->sc_tc); 1641 } 1642 #endif 1643 if (fdc->sc_nstat == 7 && 1644 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1645 1646 /* 1647 * Silently retry overruns if no other 1648 * error bit is set. Adjust threshold. 1649 */ 1650 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1651 if (thr < 15) { 1652 thr++; 1653 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1654 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1655 #ifdef FD_DEBUG 1656 if (fdc_debug) 1657 printf("fdc: %d -> threshold\n", thr); 1658 #endif 1659 fdconf(fdc); 1660 fdc->sc_overruns = 0; 1661 } 1662 if (++fdc->sc_overruns < 3) { 1663 fdc->sc_state = DOIO; 1664 goto loop; 1665 } 1666 } 1667 fdcretry(fdc); 1668 goto loop; 1669 } 1670 if (fdc->sc_errors) { 1671 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1672 fd->sc_skip / FD_BSIZE(fd), 1673 (struct disklabel *)NULL); 1674 printf("\n"); 1675 fdc->sc_errors = 0; 1676 } else { 1677 if (--fdc->sc_overruns < -20) { 1678 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1679 if (thr > 0) { 1680 thr--; 1681 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1682 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1683 #ifdef FD_DEBUG 1684 if (fdc_debug) 1685 printf("fdc: %d -> threshold\n", thr); 1686 #endif 1687 fdconf(fdc); 1688 } 1689 fdc->sc_overruns = 0; 1690 } 1691 } 1692 fd->sc_blkno += fd->sc_nblks; 1693 fd->sc_skip += fd->sc_nbytes; 1694 fd->sc_bcount -= fd->sc_nbytes; 1695 if (finfo == NULL && fd->sc_bcount > 0) { 1696 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1697 goto doseek; 1698 } 1699 fdfinish(fd, bp); 1700 goto loop; 1701 1702 case DORESET: 1703 /* try a reset, keep motor on */ 1704 fd_set_motor(fdc); 1705 delay(100); 1706 fdc->sc_nstat = 0; 1707 fdc->sc_itask = FDC_ITASK_SENSEI; 1708 fdc->sc_state = RESETCOMPLETE; 1709 timeout(fdctimeout, fdc, hz / 2); 1710 fdc_reset(fdc); 1711 return (1); /* will return later */ 1712 1713 case RESETCOMPLETE: 1714 untimeout(fdctimeout, fdc); 1715 fdconf(fdc); 1716 1717 /* FALLTHROUGH */ 1718 case DORECAL: 1719 fdc->sc_state = RECALWAIT; 1720 fdc->sc_itask = FDC_ITASK_SENSEI; 1721 fdc->sc_nstat = 0; 1722 timeout(fdctimeout, fdc, 5 * hz); 1723 /* recalibrate function */ 1724 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1725 FDC_WRFIFO(fdc, fd->sc_drive); 1726 return (1); /* will return later */ 1727 1728 case RECALWAIT: 1729 untimeout(fdctimeout, fdc); 1730 fdc->sc_state = RECALCOMPLETE; 1731 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1732 /* allow 1/30 second for heads to settle */ 1733 timeout(fdcpseudointr, fdc, hz / 30); 1734 return (1); /* will return later */ 1735 } 1736 1737 case RECALCOMPLETE: 1738 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1739 #ifdef FD_DEBUG 1740 if (fdc_debug) 1741 fdcstatus(fdc, "recalibrate failed"); 1742 #endif 1743 fdcretry(fdc); 1744 goto loop; 1745 } 1746 fd->sc_cylin = 0; 1747 goto doseek; 1748 1749 case MOTORWAIT: 1750 if (fd->sc_flags & FD_MOTOR_WAIT) 1751 return (1); /* time's not up yet */ 1752 goto doseek; 1753 1754 default: 1755 fdcstatus(fdc, "stray interrupt"); 1756 return (1); 1757 } 1758 #ifdef DIAGNOSTIC 1759 panic("fdcintr: impossible"); 1760 #endif 1761 1762 xxx: 1763 /* 1764 * We get here if the chip locks up in FDC_WRFIFO() 1765 * Cancel any operation and schedule a reset 1766 */ 1767 untimeout(fdctimeout, fdc); 1768 fdcretry(fdc); 1769 (fdc)->sc_state = DORESET; 1770 goto loop; 1771 1772 #undef st0 1773 #undef st1 1774 #undef cyl 1775 } 1776 1777 void 1778 fdcretry(fdc) 1779 struct fdc_softc *fdc; 1780 { 1781 char bits[64]; 1782 struct fd_softc *fd; 1783 struct buf *bp; 1784 1785 fd = fdc->sc_drives.tqh_first; 1786 bp = BUFQ_FIRST(&fd->sc_q); 1787 1788 fdc->sc_overruns = 0; 1789 if (fd->sc_opts & FDOPT_NORETRY) 1790 goto fail; 1791 1792 switch (fdc->sc_errors) { 1793 case 0: 1794 /* try again */ 1795 fdc->sc_state = 1796 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1797 break; 1798 1799 case 1: case 2: case 3: 1800 /* didn't work; try recalibrating */ 1801 fdc->sc_state = DORECAL; 1802 break; 1803 1804 case 4: 1805 if (fdc->sc_nstat == 7 && 1806 fdc->sc_status[0] == 0 && 1807 fdc->sc_status[1] == 0 && 1808 fdc->sc_status[2] == 0) { 1809 /* 1810 * We've retried a few times and we've got 1811 * valid status and all three status bytes 1812 * are zero. Assume this condition is the 1813 * result of no disk loaded into the drive. 1814 */ 1815 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1816 goto failsilent; 1817 } 1818 1819 /* still no go; reset the bastard */ 1820 fdc->sc_state = DORESET; 1821 break; 1822 1823 default: 1824 fail: 1825 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1826 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1827 fd->sc_skip / FD_BSIZE(fd), 1828 (struct disklabel *)NULL); 1829 1830 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1831 NE7_ST0BITS, bits, sizeof(bits))); 1832 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1833 NE7_ST1BITS, bits, sizeof(bits))); 1834 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1835 NE7_ST2BITS, bits, sizeof(bits))); 1836 printf(" cyl %d head %d sec %d)\n", 1837 fdc->sc_status[3], fdc->sc_status[4], 1838 fdc->sc_status[5]); 1839 } 1840 1841 failsilent: 1842 bp->b_flags |= B_ERROR; 1843 bp->b_error = EIO; 1844 fdfinish(fd, bp); 1845 } 1846 fdc->sc_errors++; 1847 } 1848 1849 int 1850 fdsize(dev) 1851 dev_t dev; 1852 { 1853 1854 /* Swapping to floppies would not make sense. */ 1855 return (-1); 1856 } 1857 1858 int 1859 fddump(dev, blkno, va, size) 1860 dev_t dev; 1861 daddr_t blkno; 1862 caddr_t va; 1863 size_t size; 1864 { 1865 1866 /* Not implemented. */ 1867 return (EINVAL); 1868 } 1869 1870 int 1871 fdioctl(dev, cmd, addr, flag, p) 1872 dev_t dev; 1873 u_long cmd; 1874 caddr_t addr; 1875 int flag; 1876 struct proc *p; 1877 { 1878 struct fd_softc *fd; 1879 struct fdc_softc *fdc; 1880 struct fdformat_parms *form_parms; 1881 struct fdformat_cmd *form_cmd; 1882 struct ne7_fd_formb fd_formb; 1883 int il[FD_MAX_NSEC + 1]; 1884 int unit; 1885 int i, j; 1886 int error; 1887 1888 unit = FDUNIT(dev); 1889 if (unit >= fd_cd.cd_ndevs) 1890 return (ENXIO); 1891 1892 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1893 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1894 1895 switch (cmd) { 1896 case DIOCGDINFO: 1897 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1898 return 0; 1899 1900 case DIOCWLABEL: 1901 if ((flag & FWRITE) == 0) 1902 return EBADF; 1903 /* XXX do something */ 1904 return (0); 1905 1906 case DIOCWDINFO: 1907 if ((flag & FWRITE) == 0) 1908 return (EBADF); 1909 1910 error = setdisklabel(fd->sc_dk.dk_label, 1911 (struct disklabel *)addr, 0, 1912 fd->sc_dk.dk_cpulabel); 1913 if (error) 1914 return (error); 1915 1916 error = writedisklabel(dev, fdstrategy, 1917 fd->sc_dk.dk_label, 1918 fd->sc_dk.dk_cpulabel); 1919 return (error); 1920 1921 case DIOCLOCK: 1922 /* 1923 * Nothing to do here, really. 1924 */ 1925 return (0); 1926 1927 case DIOCEJECT: 1928 if (*(int *)addr == 0) { 1929 int part = DISKPART(dev); 1930 /* 1931 * Don't force eject: check that we are the only 1932 * partition open. If so, unlock it. 1933 */ 1934 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1935 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1936 fd->sc_dk.dk_openmask) { 1937 return (EBUSY); 1938 } 1939 } 1940 /* FALLTHROUGH */ 1941 case ODIOCEJECT: 1942 fd_do_eject(fd); 1943 return (0); 1944 1945 case FDIOCGETFORMAT: 1946 form_parms = (struct fdformat_parms *)addr; 1947 form_parms->fdformat_version = FDFORMAT_VERSION; 1948 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1949 form_parms->ncyl = fd->sc_type->cylinders; 1950 form_parms->nspt = fd->sc_type->sectrac; 1951 form_parms->ntrk = fd->sc_type->heads; 1952 form_parms->stepspercyl = fd->sc_type->step; 1953 form_parms->gaplen = fd->sc_type->gap2; 1954 form_parms->fillbyte = fd->sc_type->fillbyte; 1955 form_parms->interleave = fd->sc_type->interleave; 1956 switch (fd->sc_type->rate) { 1957 case FDC_500KBPS: 1958 form_parms->xfer_rate = 500 * 1024; 1959 break; 1960 case FDC_300KBPS: 1961 form_parms->xfer_rate = 300 * 1024; 1962 break; 1963 case FDC_250KBPS: 1964 form_parms->xfer_rate = 250 * 1024; 1965 break; 1966 default: 1967 return (EINVAL); 1968 } 1969 return (0); 1970 1971 case FDIOCSETFORMAT: 1972 if ((flag & FWRITE) == 0) 1973 return (EBADF); /* must be opened for writing */ 1974 1975 form_parms = (struct fdformat_parms *)addr; 1976 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1977 return (EINVAL);/* wrong version of formatting prog */ 1978 1979 i = form_parms->nbps >> 7; 1980 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1981 i & ~(1 << (ffs(i)-1))) 1982 /* not a power-of-two multiple of 128 */ 1983 return (EINVAL); 1984 1985 switch (form_parms->xfer_rate) { 1986 case 500 * 1024: 1987 fd->sc_type->rate = FDC_500KBPS; 1988 break; 1989 case 300 * 1024: 1990 fd->sc_type->rate = FDC_300KBPS; 1991 break; 1992 case 250 * 1024: 1993 fd->sc_type->rate = FDC_250KBPS; 1994 break; 1995 default: 1996 return (EINVAL); 1997 } 1998 1999 if (form_parms->nspt > FD_MAX_NSEC || 2000 form_parms->fillbyte > 0xff || 2001 form_parms->interleave > 0xff) 2002 return EINVAL; 2003 fd->sc_type->sectrac = form_parms->nspt; 2004 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2005 return EINVAL; 2006 fd->sc_type->heads = form_parms->ntrk; 2007 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2008 fd->sc_type->secsize = ffs(i)-1; 2009 fd->sc_type->gap2 = form_parms->gaplen; 2010 fd->sc_type->cylinders = form_parms->ncyl; 2011 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2012 form_parms->nbps / DEV_BSIZE; 2013 fd->sc_type->step = form_parms->stepspercyl; 2014 fd->sc_type->fillbyte = form_parms->fillbyte; 2015 fd->sc_type->interleave = form_parms->interleave; 2016 return (0); 2017 2018 case FDIOCFORMAT_TRACK: 2019 if((flag & FWRITE) == 0) 2020 /* must be opened for writing */ 2021 return (EBADF); 2022 form_cmd = (struct fdformat_cmd *)addr; 2023 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2024 /* wrong version of formatting prog */ 2025 return (EINVAL); 2026 2027 if (form_cmd->head >= fd->sc_type->heads || 2028 form_cmd->cylinder >= fd->sc_type->cylinders) { 2029 return (EINVAL); 2030 } 2031 2032 fd_formb.head = form_cmd->head; 2033 fd_formb.cyl = form_cmd->cylinder; 2034 fd_formb.transfer_rate = fd->sc_type->rate; 2035 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2036 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2037 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2038 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2039 2040 bzero(il, sizeof il); 2041 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2042 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2043 j++; 2044 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2045 j += fd->sc_type->interleave; 2046 } 2047 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2048 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2049 fd_formb.fd_formb_headno(i) = form_cmd->head; 2050 fd_formb.fd_formb_secno(i) = il[i+1]; 2051 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2052 } 2053 2054 return fdformat(dev, &fd_formb, p); 2055 2056 case FDIOCGETOPTS: /* get drive options */ 2057 *(int *)addr = fd->sc_opts; 2058 return (0); 2059 2060 case FDIOCSETOPTS: /* set drive options */ 2061 fd->sc_opts = *(int *)addr; 2062 return (0); 2063 2064 #ifdef DEBUG 2065 case _IO('f', 100): 2066 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2067 fdcresult(fdc); 2068 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2069 for (i = 0; i < fdc->sc_nstat; i++) 2070 printf(" 0x%x", fdc->sc_status[i]); 2071 printf(">\n"); 2072 return (0); 2073 2074 case _IOW('f', 101, int): 2075 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2076 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2077 fdconf(fdc); 2078 return (0); 2079 2080 case _IO('f', 102): 2081 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2082 fdcresult(fdc); 2083 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2084 for (i=0; i< fdc->sc_nstat; i++) 2085 printf(" 0x%x", fdc->sc_status[i]); 2086 printf(">\n"); 2087 return (0); 2088 #endif 2089 default: 2090 return (ENOTTY); 2091 } 2092 2093 #ifdef DIAGNOSTIC 2094 panic("fdioctl: impossible"); 2095 #endif 2096 } 2097 2098 int 2099 fdformat(dev, finfo, p) 2100 dev_t dev; 2101 struct ne7_fd_formb *finfo; 2102 struct proc *p; 2103 { 2104 int rv = 0, s; 2105 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2106 struct fd_type *type = fd->sc_type; 2107 struct buf *bp; 2108 2109 /* set up a buffer header for fdstrategy() */ 2110 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2111 if (bp == 0) 2112 return (ENOBUFS); 2113 2114 PHOLD(p); 2115 bzero((void *)bp, sizeof(struct buf)); 2116 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2117 bp->b_proc = p; 2118 bp->b_dev = dev; 2119 2120 /* 2121 * Calculate a fake blkno, so fdstrategy() would initiate a 2122 * seek to the requested cylinder. 2123 */ 2124 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2125 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2126 / DEV_BSIZE; 2127 2128 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2129 bp->b_data = (caddr_t)finfo; 2130 2131 #ifdef FD_DEBUG 2132 if (fdc_debug) { 2133 int i; 2134 2135 printf("fdformat: blkno 0x%x count %ld\n", 2136 bp->b_blkno, bp->b_bcount); 2137 2138 printf("\tcyl:\t%d\n", finfo->cyl); 2139 printf("\thead:\t%d\n", finfo->head); 2140 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2141 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2142 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2143 printf("\ttrack data:"); 2144 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2145 printf(" [c%d h%d s%d]", 2146 finfo->fd_formb_cylno(i), 2147 finfo->fd_formb_headno(i), 2148 finfo->fd_formb_secno(i) ); 2149 if (finfo->fd_formb_secsize(i) != 2) 2150 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2151 } 2152 printf("\n"); 2153 } 2154 #endif 2155 2156 /* now do the format */ 2157 fdstrategy(bp); 2158 2159 /* ...and wait for it to complete */ 2160 s = splbio(); 2161 while (!(bp->b_flags & B_DONE)) { 2162 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2163 if (rv == EWOULDBLOCK) 2164 break; 2165 } 2166 splx(s); 2167 2168 if (rv == EWOULDBLOCK) { 2169 /* timed out */ 2170 rv = EIO; 2171 biodone(bp); 2172 } 2173 if (bp->b_flags & B_ERROR) { 2174 rv = bp->b_error; 2175 } 2176 PRELE(p); 2177 free(bp, M_TEMP); 2178 return (rv); 2179 } 2180 2181 void 2182 fdgetdisklabel(dev) 2183 dev_t dev; 2184 { 2185 int unit = FDUNIT(dev), i; 2186 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2187 struct disklabel *lp = fd->sc_dk.dk_label; 2188 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2189 2190 bzero(lp, sizeof(struct disklabel)); 2191 bzero(lp, sizeof(struct cpu_disklabel)); 2192 2193 lp->d_type = DTYPE_FLOPPY; 2194 lp->d_secsize = FD_BSIZE(fd); 2195 lp->d_secpercyl = fd->sc_type->seccyl; 2196 lp->d_nsectors = fd->sc_type->sectrac; 2197 lp->d_ncylinders = fd->sc_type->cylinders; 2198 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2199 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2200 lp->d_rpm = 3600; /* XXX like it matters... */ 2201 2202 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2203 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2204 lp->d_interleave = 1; 2205 2206 lp->d_partitions[RAW_PART].p_offset = 0; 2207 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2208 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2209 lp->d_npartitions = RAW_PART + 1; 2210 2211 lp->d_magic = DISKMAGIC; 2212 lp->d_magic2 = DISKMAGIC; 2213 lp->d_checksum = dkcksum(lp); 2214 2215 /* 2216 * Call the generic disklabel extraction routine. If there's 2217 * not a label there, fake it. 2218 */ 2219 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2220 strncpy(lp->d_packname, "default label", 2221 sizeof(lp->d_packname)); 2222 /* 2223 * Reset the partition info; it might have gotten 2224 * trashed in readdisklabel(). 2225 * 2226 * XXX Why do we have to do this? readdisklabel() 2227 * should be safe... 2228 */ 2229 for (i = 0; i < MAXPARTITIONS; ++i) { 2230 lp->d_partitions[i].p_offset = 0; 2231 if (i == RAW_PART) { 2232 lp->d_partitions[i].p_size = 2233 lp->d_secpercyl * lp->d_ncylinders; 2234 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2235 } else { 2236 lp->d_partitions[i].p_size = 0; 2237 lp->d_partitions[i].p_fstype = FS_UNUSED; 2238 } 2239 } 2240 lp->d_npartitions = RAW_PART + 1; 2241 } 2242 } 2243 2244 void 2245 fd_do_eject(fd) 2246 struct fd_softc *fd; 2247 { 2248 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2249 2250 if (CPU_ISSUN4C) { 2251 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2252 delay(10); 2253 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2254 return; 2255 } 2256 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077)) { 2257 bus_space_tag_t t = fdc->sc_bustag; 2258 bus_space_handle_t h = fdc->sc_handle; 2259 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2260 2261 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2262 delay(10); 2263 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2264 return; 2265 } 2266 } 2267 2268 #ifdef MEMORY_DISK_HOOKS 2269 int fd_read_md_image __P((size_t *, caddr_t *)); 2270 #endif 2271 2272 /* ARGSUSED */ 2273 void 2274 fd_mountroot_hook(dev) 2275 struct device *dev; 2276 { 2277 int c; 2278 2279 fd_do_eject((struct fd_softc *)dev); 2280 printf("Insert filesystem floppy and press return."); 2281 for (;;) { 2282 c = cngetc(); 2283 if ((c == '\r') || (c == '\n')) { 2284 printf("\n"); 2285 break; 2286 } 2287 } 2288 } 2289 2290 #ifdef MEMORY_DISK_HOOKS 2291 2292 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2293 2294 int 2295 fd_read_md_image(sizep, addrp) 2296 size_t *sizep; 2297 caddr_t *addrp; 2298 { 2299 struct buf buf, *bp = &buf; 2300 dev_t dev; 2301 off_t offset; 2302 caddr_t addr; 2303 2304 dev = makedev(54,0); /* XXX */ 2305 2306 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2307 *addrp = addr; 2308 2309 if (fdopen(dev, 0, S_IFCHR, NULL)) 2310 panic("fd: mountroot: fdopen"); 2311 2312 offset = 0; 2313 2314 for (;;) { 2315 bp->b_dev = dev; 2316 bp->b_error = 0; 2317 bp->b_resid = 0; 2318 bp->b_proc = NULL; 2319 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2320 bp->b_blkno = btodb(offset); 2321 bp->b_bcount = DEV_BSIZE; 2322 bp->b_data = addr; 2323 fdstrategy(bp); 2324 while ((bp->b_flags & B_DONE) == 0) { 2325 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2326 } 2327 if (bp->b_error) 2328 panic("fd: mountroot: fdread error %d", bp->b_error); 2329 2330 if (bp->b_resid != 0) 2331 break; 2332 2333 addr += DEV_BSIZE; 2334 offset += DEV_BSIZE; 2335 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2336 break; 2337 } 2338 (void)fdclose(dev, 0, S_IFCHR, NULL); 2339 *sizep = offset; 2340 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2341 return (0); 2342 } 2343 #endif 2344
Indexes created Fri Oct 03 02:09:57 GMT 2025