fd.c revision 1.76
1 /* $NetBSD: fd.c,v 1.76 2000/02/07 11:44:15 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/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 #define FDC_NEEDMOTORWAIT 0x08 160 int sc_errors; /* number of retries so far */ 161 int sc_overruns; /* number of DMA overruns */ 162 int sc_cfg; /* current configuration */ 163 struct fdcio sc_io; 164 #define sc_handle sc_io.fdcio_handle 165 #define sc_reg_msr sc_io.fdcio_reg_msr 166 #define sc_reg_fifo sc_io.fdcio_reg_fifo 167 #define sc_reg_dor sc_io.fdcio_reg_dor 168 #define sc_reg_drs sc_io.fdcio_reg_msr 169 #define sc_itask sc_io.fdcio_itask 170 #define sc_istatus sc_io.fdcio_istatus 171 #define sc_data sc_io.fdcio_data 172 #define sc_tc sc_io.fdcio_tc 173 #define sc_nstat sc_io.fdcio_nstat 174 #define sc_status sc_io.fdcio_status 175 #define sc_intrcnt sc_io.fdcio_intrcnt 176 }; 177 178 #undef FDC_C_HANDLER 179 #ifndef FDC_C_HANDLER 180 extern struct fdcio *fdciop; 181 #endif 182 183 /* controller driver configuration */ 184 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 185 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 186 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 187 void fdcattach_obio __P((struct device *, struct device *, void *)); 188 189 int fdcattach __P((struct fdc_softc *, int)); 190 191 struct cfattach fdc_mainbus_ca = { 192 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 193 }; 194 struct cfattach fdc_obio_ca = { 195 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 196 }; 197 198 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 199 200 /* 201 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 202 * we tell them apart. 203 */ 204 struct fd_type { 205 int sectrac; /* sectors per track */ 206 int heads; /* number of heads */ 207 int seccyl; /* sectors per cylinder */ 208 int secsize; /* size code for sectors */ 209 int datalen; /* data len when secsize = 0 */ 210 int steprate; /* step rate and head unload time */ 211 int gap1; /* gap len between sectors */ 212 int gap2; /* formatting gap */ 213 int cylinders; /* total num of cylinders */ 214 int size; /* size of disk in sectors */ 215 int step; /* steps per cylinder */ 216 int rate; /* transfer speed code */ 217 int fillbyte; /* format fill byte */ 218 int interleave; /* interleave factor (formatting) */ 219 char *name; 220 }; 221 222 /* The order of entries in the following table is important -- BEWARE! */ 223 struct fd_type fd_types[] = { 224 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 226 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 227 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 228 }; 229 230 /* software state, per disk (with up to 4 disks per ctlr) */ 231 struct fd_softc { 232 struct device sc_dv; /* generic device info */ 233 struct disk sc_dk; /* generic disk info */ 234 235 struct fd_type *sc_deftype; /* default type descriptor */ 236 struct fd_type *sc_type; /* current type descriptor */ 237 238 daddr_t sc_blkno; /* starting block number */ 239 int sc_bcount; /* byte count left */ 240 int sc_skip; /* bytes already transferred */ 241 int sc_nblks; /* number of blocks currently tranferring */ 242 int sc_nbytes; /* number of bytes currently tranferring */ 243 244 int sc_drive; /* physical unit number */ 245 int sc_flags; 246 #define FD_OPEN 0x01 /* it's open */ 247 #define FD_MOTOR 0x02 /* motor should be on */ 248 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 249 int sc_cylin; /* where we think the head is */ 250 int sc_opts; /* user-set options */ 251 252 void *sc_sdhook; /* shutdownhook cookie */ 253 254 TAILQ_ENTRY(fd_softc) sc_drivechain; 255 int sc_ops; /* I/O ops since last switch */ 256 struct buf_queue sc_q; /* pending I/O requests */ 257 int sc_active; /* number of active I/O requests */ 258 }; 259 260 /* floppy driver configuration */ 261 int fdmatch __P((struct device *, struct cfdata *, void *)); 262 void fdattach __P((struct device *, struct device *, void *)); 263 264 struct cfattach fd_ca = { 265 sizeof(struct fd_softc), fdmatch, fdattach 266 }; 267 268 extern struct cfdriver fd_cd; 269 270 void fdgetdisklabel __P((dev_t)); 271 int fd_get_parms __P((struct fd_softc *)); 272 void fdstrategy __P((struct buf *)); 273 void fdstart __P((struct fd_softc *)); 274 int fdprint __P((void *, const char *)); 275 276 struct dkdriver fddkdriver = { fdstrategy }; 277 278 struct fd_type *fd_nvtotype __P((char *, int, int)); 279 void fd_set_motor __P((struct fdc_softc *fdc)); 280 void fd_motor_off __P((void *arg)); 281 void fd_motor_on __P((void *arg)); 282 int fdcresult __P((struct fdc_softc *fdc)); 283 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 284 void fdcstart __P((struct fdc_softc *fdc)); 285 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 286 void fdc_reset __P((struct fdc_softc *fdc)); 287 void fdctimeout __P((void *arg)); 288 void fdcpseudointr __P((void *arg)); 289 #ifdef FDC_C_HANDLER 290 int fdc_c_hwintr __P((void *)); 291 #else 292 void fdchwintr __P((void)); 293 #endif 294 int fdcswintr __P((void *)); 295 int fdcstate __P((struct fdc_softc *)); 296 void fdcretry __P((struct fdc_softc *fdc)); 297 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 298 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 299 void fd_do_eject __P((struct fd_softc *)); 300 void fd_mountroot_hook __P((struct device *)); 301 static int fdconf __P((struct fdc_softc *)); 302 static void establish_chip_type __P(( 303 struct fdc_softc *, 304 bus_space_tag_t, 305 bus_type_t, 306 bus_addr_t, 307 bus_size_t, 308 bus_space_handle_t)); 309 310 311 #if PIL_FDSOFT == 4 312 #define IE_FDSOFT IE_L4 313 #else 314 #error 4 315 #endif 316 317 #ifdef FDC_C_HANDLER 318 #if defined(SUN4M) 319 #define FD_SET_SWINTR do { \ 320 if (CPU_ISSUN4M) \ 321 raise(0, PIL_FDSOFT); \ 322 else \ 323 ienab_bis(IE_L4); \ 324 } while(0) 325 #else 326 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 327 #endif /* defined(SUN4M) */ 328 #endif /* FDC_C_HANDLER */ 329 330 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 331 332 int 333 fdcmatch_mainbus(parent, match, aux) 334 struct device *parent; 335 struct cfdata *match; 336 void *aux; 337 { 338 struct mainbus_attach_args *ma = aux; 339 340 /* 341 * Floppy controller is on mainbus on sun4c. 342 */ 343 if (!CPU_ISSUN4C) 344 return (0); 345 346 /* sun4c PROMs call the controller "fd" */ 347 if (strcmp("fd", ma->ma_name) != 0) 348 return (0); 349 350 return (bus_space_probe(ma->ma_bustag, 351 ma->ma_iospace, 352 ma->ma_paddr, 353 1, /* probe size */ 354 0, /* offset */ 355 0, /* flags */ 356 NULL, NULL)); 357 } 358 359 int 360 fdcmatch_obio(parent, match, aux) 361 struct device *parent; 362 struct cfdata *match; 363 void *aux; 364 { 365 union obio_attach_args *uoba = aux; 366 struct sbus_attach_args *sa; 367 368 /* 369 * Floppy controller is on obio on sun4m. 370 */ 371 if (uoba->uoba_isobio4 != 0) 372 return (0); 373 374 sa = &uoba->uoba_sbus; 375 376 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 377 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 378 return (0); 379 380 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 381 1, /* probe size */ 382 0, /* offset */ 383 0, /* flags */ 384 NULL, NULL)); 385 } 386 387 static void 388 establish_chip_type(fdc, tag, type, addr, size, handle) 389 struct fdc_softc *fdc; 390 bus_space_tag_t tag; 391 bus_type_t type; 392 bus_addr_t addr; 393 bus_size_t size; 394 bus_space_handle_t handle; 395 { 396 u_int8_t v; 397 398 /* 399 * This hack from Chris Torek: apparently DOR really 400 * addresses MSR/DRS on a 82072. 401 * We used to rely on the VERSION command to tell the 402 * difference (which did not work). 403 */ 404 405 /* First, check the size of the register bank */ 406 if (size < 8) 407 /* It isn't a 82077 */ 408 return; 409 410 /* Then probe the DOR register offset */ 411 if (bus_space_probe(tag, type, addr, 412 1, /* probe size */ 413 FDREG77_DOR, /* offset */ 414 0, /* flags */ 415 NULL, NULL) == 0) { 416 417 /* It isn't a 82077 */ 418 return; 419 } 420 421 v = bus_space_read_1(tag, handle, FDREG77_DOR); 422 if (v == NE7_RQM) { 423 /* 424 * Value in DOR looks like it's really MSR 425 */ 426 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 427 v = bus_space_read_1(tag, handle, FDREG77_DOR); 428 if (v == NE7_RQM) { 429 /* 430 * The value in the DOR didn't stick; 431 * it isn't a 82077 432 */ 433 return; 434 } 435 } 436 437 fdc->sc_flags |= FDC_82077; 438 } 439 440 /* 441 * Arguments passed between fdcattach and fdprobe. 442 */ 443 struct fdc_attach_args { 444 int fa_drive; 445 struct fd_type *fa_deftype; 446 }; 447 448 /* 449 * Print the location of a disk drive (called just before attaching the 450 * the drive). If `fdc' is not NULL, the drive was found but was not 451 * in the system config file; print the drive name as well. 452 * Return QUIET (config_find ignores this if the device was configured) to 453 * avoid printing `fdN not configured' messages. 454 */ 455 int 456 fdprint(aux, fdc) 457 void *aux; 458 const char *fdc; 459 { 460 register struct fdc_attach_args *fa = aux; 461 462 if (!fdc) 463 printf(" drive %d", fa->fa_drive); 464 return (QUIET); 465 } 466 467 /* 468 * Configure several parameters and features on the FDC. 469 * Return 0 on success. 470 */ 471 static int 472 fdconf(fdc) 473 struct fdc_softc *fdc; 474 { 475 int vroom; 476 477 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 478 return (-1); 479 480 /* 481 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 482 * the PROM thinks is appropriate. 483 */ 484 if ((vroom = fdc->sc_status[7]) == 0) 485 vroom = 0x64; 486 487 /* Configure controller to use FIFO and Implied Seek */ 488 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 489 return (-1); 490 if (fdc_wrfifo(fdc, vroom) != 0) 491 return (-1); 492 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 493 return (-1); 494 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 495 return (-1); 496 /* No result phase for the NE7CMD_CFG command */ 497 498 if ((fdc->sc_flags & FDC_82077) != 0) { 499 /* Lock configuration across soft resets. */ 500 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 501 fdcresult(fdc) != 1) { 502 #ifdef DEBUG 503 printf("fdconf: CFGLOCK failed"); 504 #endif 505 return (-1); 506 } 507 } 508 509 return (0); 510 #if 0 511 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 512 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 513 if (fdc_debug) 514 printf("[version cmd]"); 515 } 516 #endif 517 } 518 519 void 520 fdcattach_mainbus(parent, self, aux) 521 struct device *parent, *self; 522 void *aux; 523 { 524 struct fdc_softc *fdc = (void *)self; 525 struct mainbus_attach_args *ma = aux; 526 527 fdc->sc_bustag = ma->ma_bustag; 528 529 if (bus_space_map2( 530 ma->ma_bustag, 531 ma->ma_iospace, 532 ma->ma_paddr, 533 ma->ma_size, 534 BUS_SPACE_MAP_LINEAR, 535 0, 536 &fdc->sc_handle) != 0) { 537 printf("%s: cannot map registers\n", self->dv_xname); 538 return; 539 } 540 541 establish_chip_type(fdc, 542 ma->ma_bustag, 543 ma->ma_iospace, 544 ma->ma_paddr, 545 ma->ma_size, 546 fdc->sc_handle); 547 548 if (fdcattach(fdc, ma->ma_pri) != 0) 549 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 550 } 551 552 void 553 fdcattach_obio(parent, self, aux) 554 struct device *parent, *self; 555 void *aux; 556 { 557 struct fdc_softc *fdc = (void *)self; 558 union obio_attach_args *uoba = aux; 559 struct sbus_attach_args *sa = &uoba->uoba_sbus; 560 561 if (sa->sa_nintr == 0) { 562 printf(": no interrupt line configured\n"); 563 return; 564 } 565 566 fdc->sc_bustag = sa->sa_bustag; 567 568 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 establish_chip_type(fdc, 580 sa->sa_bustag, 581 sa->sa_slot, 582 sa->sa_offset, 583 sa->sa_size, 584 fdc->sc_handle); 585 586 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 587 printf(": no drives attached\n"); 588 return; 589 } 590 591 if (fdcattach(fdc, sa->sa_pri) != 0) 592 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 593 } 594 595 int 596 fdcattach(fdc, pri) 597 struct fdc_softc *fdc; 598 int pri; 599 { 600 struct fdc_attach_args fa; 601 int drive_attached; 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 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 616 } else { 617 fdc->sc_reg_msr = FDREG72_MSR; 618 fdc->sc_reg_fifo = FDREG72_FIFO; 619 fdc->sc_reg_dor = 0; 620 code = '2'; 621 } 622 623 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 624 625 /* 626 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 627 * Note: CFG_EFIFO is active-low, initial threshold value: 8 628 */ 629 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 630 if (fdconf(fdc) != 0) { 631 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 632 return (-1); 633 } 634 635 #ifdef FDC_C_HANDLER 636 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 637 fdc_c_hwintr, fdc); 638 #else 639 fdciop = &fdc->sc_io; 640 (void)bus_intr_establish(fdc->sc_bustag, pri, 641 BUS_INTR_ESTABLISH_FASTTRAP, 642 (int (*) __P((void *)))fdchwintr, NULL); 643 #endif 644 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 645 BUS_INTR_ESTABLISH_SOFTINTR, 646 fdcswintr, fdc); 647 648 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 649 650 /* physical limit: four drives per controller. */ 651 drive_attached = 0; 652 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 653 fa.fa_deftype = NULL; /* unknown */ 654 fa.fa_deftype = &fd_types[0]; /* XXX */ 655 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 656 drive_attached = 1; 657 } 658 659 if (drive_attached == 0) { 660 /* XXX - dis-establish interrupts here */ 661 /* return (-1); */ 662 } 663 664 return (0); 665 } 666 667 int 668 fdmatch(parent, match, aux) 669 struct device *parent; 670 struct cfdata *match; 671 void *aux; 672 { 673 struct fdc_softc *fdc = (void *)parent; 674 bus_space_tag_t t = fdc->sc_bustag; 675 bus_space_handle_t h = fdc->sc_handle; 676 struct fdc_attach_args *fa = aux; 677 int drive = fa->fa_drive; 678 int n, ok; 679 680 if (drive > 0) 681 /* XXX - for now, punt on more than one drive */ 682 return (0); 683 684 if ((fdc->sc_flags & FDC_82077) != 0) { 685 /* select drive and turn on motor */ 686 bus_space_write_1(t, h, fdc->sc_reg_dor, 687 drive | FDO_FRST | FDO_MOEN(drive)); 688 /* wait for motor to spin up */ 689 delay(250000); 690 } else { 691 auxregbisc(AUXIO4C_FDS, 0); 692 } 693 fdc->sc_nstat = 0; 694 fdc_wrfifo(fdc, NE7CMD_RECAL); 695 fdc_wrfifo(fdc, drive); 696 697 /* Wait for recalibration to complete */ 698 for (n = 0; n < 10000; n++) { 699 u_int8_t v; 700 701 delay(1000); 702 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 703 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 704 /* wait a bit longer till device *really* is ready */ 705 delay(100000); 706 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 707 break; 708 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 709 /* 710 * Got `invalid command'; we interpret it 711 * to mean that the re-calibrate hasn't in 712 * fact finished yet 713 */ 714 continue; 715 break; 716 } 717 } 718 n = fdc->sc_nstat; 719 #ifdef FD_DEBUG 720 if (fdc_debug) { 721 int i; 722 printf("fdprobe: %d stati:", n); 723 for (i = 0; i < n; i++) 724 printf(" 0x%x", fdc->sc_status[i]); 725 printf("\n"); 726 } 727 #endif 728 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 729 730 /* turn off motor */ 731 if ((fdc->sc_flags & FDC_82077) != 0) { 732 /* deselect drive and turn motor off */ 733 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 734 } else { 735 auxregbisc(0, AUXIO4C_FDS); 736 } 737 738 return (ok); 739 } 740 741 /* 742 * Controller is working, and drive responded. Attach it. 743 */ 744 void 745 fdattach(parent, self, aux) 746 struct device *parent, *self; 747 void *aux; 748 { 749 struct fdc_softc *fdc = (void *)parent; 750 struct fd_softc *fd = (void *)self; 751 struct fdc_attach_args *fa = aux; 752 struct fd_type *type = fa->fa_deftype; 753 int drive = fa->fa_drive; 754 755 /* XXX Allow `flags' to override device type? */ 756 757 if (type) 758 printf(": %s %d cyl, %d head, %d sec\n", type->name, 759 type->cylinders, type->heads, type->sectrac); 760 else 761 printf(": density unknown\n"); 762 763 BUFQ_INIT(&fd->sc_q); 764 fd->sc_cylin = -1; 765 fd->sc_drive = drive; 766 fd->sc_deftype = type; 767 fdc->sc_fd[drive] = fd; 768 769 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 770 fdc_wrfifo(fdc, type->steprate); 771 /* XXX head load time == 6ms */ 772 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 773 774 /* 775 * Initialize and attach the disk structure. 776 */ 777 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 778 fd->sc_dk.dk_driver = &fddkdriver; 779 disk_attach(&fd->sc_dk); 780 781 /* 782 * Establish a mountroot_hook anyway in case we booted 783 * with RB_ASKNAME and get selected as the boot device. 784 */ 785 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 786 787 /* Make sure the drive motor gets turned off at shutdown time. */ 788 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 789 790 /* XXX Need to do some more fiddling with sc_dk. */ 791 dk_establish(&fd->sc_dk, &fd->sc_dv); 792 } 793 794 __inline struct fd_type * 795 fd_dev_to_type(fd, dev) 796 struct fd_softc *fd; 797 dev_t dev; 798 { 799 int type = FDTYPE(dev); 800 801 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 802 return (NULL); 803 return (type ? &fd_types[type - 1] : fd->sc_deftype); 804 } 805 806 void 807 fdstrategy(bp) 808 register struct buf *bp; /* IO operation to perform */ 809 { 810 struct fd_softc *fd; 811 int unit = FDUNIT(bp->b_dev); 812 int sz; 813 int s; 814 815 /* Valid unit, controller, and request? */ 816 if (unit >= fd_cd.cd_ndevs || 817 (fd = fd_cd.cd_devs[unit]) == 0 || 818 bp->b_blkno < 0 || 819 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 820 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 821 (bp->b_flags & B_FORMAT) == 0)) { 822 bp->b_error = EINVAL; 823 goto bad; 824 } 825 826 /* If it's a null transfer, return immediately. */ 827 if (bp->b_bcount == 0) 828 goto done; 829 830 sz = howmany(bp->b_bcount, DEV_BSIZE); 831 832 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 833 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 834 - bp->b_blkno; 835 if (sz == 0) { 836 /* If exactly at end of disk, return EOF. */ 837 bp->b_resid = bp->b_bcount; 838 goto done; 839 } 840 if (sz < 0) { 841 /* If past end of disk, return EINVAL. */ 842 bp->b_error = EINVAL; 843 goto bad; 844 } 845 /* Otherwise, truncate request. */ 846 bp->b_bcount = sz << DEV_BSHIFT; 847 } 848 849 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 850 (FD_BSIZE(fd) * fd->sc_type->seccyl); 851 852 #ifdef FD_DEBUG 853 if (fdc_debug > 1) 854 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 855 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 856 #endif 857 858 /* Queue transfer on drive, activate drive and controller if idle. */ 859 s = splbio(); 860 disksort_cylinder(&fd->sc_q, bp); 861 untimeout(fd_motor_off, fd); /* a good idea */ 862 if (fd->sc_active == 0) 863 fdstart(fd); 864 #ifdef DIAGNOSTIC 865 else { 866 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 867 if (fdc->sc_state == DEVIDLE) { 868 printf("fdstrategy: controller inactive\n"); 869 fdcstart(fdc); 870 } 871 } 872 #endif 873 splx(s); 874 return; 875 876 bad: 877 bp->b_flags |= B_ERROR; 878 done: 879 /* Toss transfer; we're done early. */ 880 biodone(bp); 881 } 882 883 void 884 fdstart(fd) 885 struct fd_softc *fd; 886 { 887 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 888 int active = fdc->sc_drives.tqh_first != 0; 889 890 /* Link into controller queue. */ 891 fd->sc_active = 1; 892 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 893 894 /* If controller not already active, start it. */ 895 if (!active) 896 fdcstart(fdc); 897 } 898 899 void 900 fdfinish(fd, bp) 901 struct fd_softc *fd; 902 struct buf *bp; 903 { 904 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 905 906 /* 907 * Move this drive to the end of the queue to give others a `fair' 908 * chance. We only force a switch if N operations are completed while 909 * another drive is waiting to be serviced, since there is a long motor 910 * startup delay whenever we switch. 911 */ 912 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 913 fd->sc_ops = 0; 914 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 915 if (BUFQ_NEXT(bp) != NULL) { 916 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 917 } else 918 fd->sc_active = 0; 919 } 920 bp->b_resid = fd->sc_bcount; 921 fd->sc_skip = 0; 922 BUFQ_REMOVE(&fd->sc_q, bp); 923 924 biodone(bp); 925 /* turn off motor 5s from now */ 926 timeout(fd_motor_off, fd, 5 * hz); 927 fdc->sc_state = DEVIDLE; 928 } 929 930 void 931 fdc_reset(fdc) 932 struct fdc_softc *fdc; 933 { 934 bus_space_tag_t t = fdc->sc_bustag; 935 bus_space_handle_t h = fdc->sc_handle; 936 937 if ((fdc->sc_flags & FDC_82077) != 0) { 938 bus_space_write_1(t, h, fdc->sc_reg_dor, 939 FDO_FDMAEN | FDO_MOEN(0)); 940 } 941 942 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 943 delay(10); 944 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 945 946 if ((fdc->sc_flags & FDC_82077) != 0) { 947 bus_space_write_1(t, h, fdc->sc_reg_dor, 948 FDO_FRST | FDO_FDMAEN | FDO_DS); 949 } 950 #ifdef FD_DEBUG 951 if (fdc_debug) 952 printf("fdc reset\n"); 953 #endif 954 } 955 956 void 957 fd_set_motor(fdc) 958 struct fdc_softc *fdc; 959 { 960 struct fd_softc *fd; 961 u_char status; 962 int n; 963 964 if ((fdc->sc_flags & FDC_82077) != 0) { 965 status = FDO_FRST | FDO_FDMAEN; 966 if ((fd = fdc->sc_drives.tqh_first) != NULL) 967 status |= fd->sc_drive; 968 969 for (n = 0; n < 4; n++) 970 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 971 status |= FDO_MOEN(n); 972 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 973 fdc->sc_reg_dor, status); 974 } else { 975 976 for (n = 0; n < 4; n++) { 977 if ((fd = fdc->sc_fd[n]) != NULL && 978 (fd->sc_flags & FD_MOTOR) != 0) { 979 auxregbisc(AUXIO4C_FDS, 0); 980 return; 981 } 982 } 983 auxregbisc(0, AUXIO4C_FDS); 984 } 985 } 986 987 void 988 fd_motor_off(arg) 989 void *arg; 990 { 991 struct fd_softc *fd = arg; 992 int s; 993 994 s = splbio(); 995 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 996 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 997 splx(s); 998 } 999 1000 void 1001 fd_motor_on(arg) 1002 void *arg; 1003 { 1004 struct fd_softc *fd = arg; 1005 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1006 int s; 1007 1008 s = splbio(); 1009 fd->sc_flags &= ~FD_MOTOR_WAIT; 1010 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1011 (void) fdcstate(fdc); 1012 splx(s); 1013 } 1014 1015 /* 1016 * Get status bytes off the FDC after a command has finished 1017 * Returns the number of status bytes read; -1 on error. 1018 * The return value is also stored in `sc_nstat'. 1019 */ 1020 int 1021 fdcresult(fdc) 1022 struct fdc_softc *fdc; 1023 { 1024 bus_space_tag_t t = fdc->sc_bustag; 1025 bus_space_handle_t h = fdc->sc_handle; 1026 int j, n = 0; 1027 1028 for (j = 10000; j; j--) { 1029 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1030 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1031 if (v == NE7_RQM) 1032 return (fdc->sc_nstat = n); 1033 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1034 if (n >= sizeof(fdc->sc_status)) { 1035 log(LOG_ERR, "fdcresult: overrun\n"); 1036 return (-1); 1037 } 1038 fdc->sc_status[n++] = 1039 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1040 } else 1041 delay(1); 1042 } 1043 1044 log(LOG_ERR, "fdcresult: timeout\n"); 1045 return (fdc->sc_nstat = -1); 1046 } 1047 1048 /* 1049 * Write a command byte to the FDC. 1050 * Returns 0 on success; -1 on failure (i.e. timeout) 1051 */ 1052 int 1053 fdc_wrfifo(fdc, x) 1054 struct fdc_softc *fdc; 1055 u_int8_t x; 1056 { 1057 bus_space_tag_t t = fdc->sc_bustag; 1058 bus_space_handle_t h = fdc->sc_handle; 1059 int i; 1060 1061 for (i = 100000; i-- > 0;) { 1062 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1063 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1064 /* The chip is ready */ 1065 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1066 return (0); 1067 } 1068 delay(1); 1069 } 1070 return (-1); 1071 } 1072 1073 int 1074 fdopen(dev, flags, fmt, p) 1075 dev_t dev; 1076 int flags, fmt; 1077 struct proc *p; 1078 { 1079 int unit, pmask; 1080 struct fd_softc *fd; 1081 struct fd_type *type; 1082 1083 unit = FDUNIT(dev); 1084 if (unit >= fd_cd.cd_ndevs) 1085 return (ENXIO); 1086 fd = fd_cd.cd_devs[unit]; 1087 if (fd == NULL) 1088 return (ENXIO); 1089 type = fd_dev_to_type(fd, dev); 1090 if (type == NULL) 1091 return (ENXIO); 1092 1093 if ((fd->sc_flags & FD_OPEN) != 0 && 1094 fd->sc_type != type) 1095 return (EBUSY); 1096 1097 fd->sc_type = type; 1098 fd->sc_cylin = -1; 1099 fd->sc_flags |= FD_OPEN; 1100 1101 /* 1102 * Only update the disklabel if we're not open anywhere else. 1103 */ 1104 if (fd->sc_dk.dk_openmask == 0) 1105 fdgetdisklabel(dev); 1106 1107 pmask = (1 << DISKPART(dev)); 1108 1109 switch (fmt) { 1110 case S_IFCHR: 1111 fd->sc_dk.dk_copenmask |= pmask; 1112 break; 1113 1114 case S_IFBLK: 1115 fd->sc_dk.dk_bopenmask |= pmask; 1116 break; 1117 } 1118 fd->sc_dk.dk_openmask = 1119 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1120 1121 return (0); 1122 } 1123 1124 int 1125 fdclose(dev, flags, fmt, p) 1126 dev_t dev; 1127 int flags, fmt; 1128 struct proc *p; 1129 { 1130 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1131 int pmask = (1 << DISKPART(dev)); 1132 1133 fd->sc_flags &= ~FD_OPEN; 1134 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1135 1136 switch (fmt) { 1137 case S_IFCHR: 1138 fd->sc_dk.dk_copenmask &= ~pmask; 1139 break; 1140 1141 case S_IFBLK: 1142 fd->sc_dk.dk_bopenmask &= ~pmask; 1143 break; 1144 } 1145 fd->sc_dk.dk_openmask = 1146 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1147 1148 return (0); 1149 } 1150 1151 int 1152 fdread(dev, uio, flag) 1153 dev_t dev; 1154 struct uio *uio; 1155 int flag; 1156 { 1157 1158 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1159 } 1160 1161 int 1162 fdwrite(dev, uio, flag) 1163 dev_t dev; 1164 struct uio *uio; 1165 int flag; 1166 { 1167 1168 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1169 } 1170 1171 void 1172 fdcstart(fdc) 1173 struct fdc_softc *fdc; 1174 { 1175 1176 #ifdef DIAGNOSTIC 1177 /* only got here if controller's drive queue was inactive; should 1178 be in idle state */ 1179 if (fdc->sc_state != DEVIDLE) { 1180 printf("fdcstart: not idle\n"); 1181 return; 1182 } 1183 #endif 1184 (void) fdcstate(fdc); 1185 } 1186 1187 void 1188 fdcstatus(fdc, s) 1189 struct fdc_softc *fdc; 1190 char *s; 1191 { 1192 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1193 int n; 1194 char bits[64]; 1195 1196 /* Just print last status */ 1197 n = fdc->sc_nstat; 1198 1199 #if 0 1200 /* 1201 * A 82072 seems to return <invalid command> on 1202 * gratuitous Sense Interrupt commands. 1203 */ 1204 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1205 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1206 (void) fdcresult(fdc); 1207 n = 2; 1208 } 1209 #endif 1210 1211 printf("%s: %s: state %d", 1212 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1213 1214 switch (n) { 1215 case 0: 1216 printf("\n"); 1217 break; 1218 case 2: 1219 printf(" (st0 %s cyl %d)\n", 1220 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1221 bits, sizeof(bits)), fdc->sc_status[1]); 1222 break; 1223 case 7: 1224 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1225 NE7_ST0BITS, bits, sizeof(bits))); 1226 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1227 NE7_ST1BITS, bits, sizeof(bits))); 1228 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1229 NE7_ST2BITS, bits, sizeof(bits))); 1230 printf(" cyl %d head %d sec %d)\n", 1231 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1232 break; 1233 #ifdef DIAGNOSTIC 1234 default: 1235 printf(" fdcstatus: weird size: %d\n", n); 1236 break; 1237 #endif 1238 } 1239 } 1240 1241 void 1242 fdctimeout(arg) 1243 void *arg; 1244 { 1245 struct fdc_softc *fdc = arg; 1246 struct fd_softc *fd; 1247 int s; 1248 1249 s = splbio(); 1250 fd = fdc->sc_drives.tqh_first; 1251 if (fd == NULL) { 1252 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1253 fdc->sc_dev.dv_xname, 1254 fdc->sc_state, fdc->sc_istatus); 1255 fdc->sc_state = DEVIDLE; 1256 goto out; 1257 } 1258 1259 if (BUFQ_FIRST(&fd->sc_q) != NULL) 1260 fdc->sc_state++; 1261 else 1262 fdc->sc_state = DEVIDLE; 1263 1264 (void) fdcstate(fdc); 1265 out: 1266 splx(s); 1267 1268 } 1269 1270 void 1271 fdcpseudointr(arg) 1272 void *arg; 1273 { 1274 struct fdc_softc *fdc = arg; 1275 int s; 1276 1277 /* Just ensure it has the right spl. */ 1278 s = splbio(); 1279 (void) fdcstate(fdc); 1280 splx(s); 1281 } 1282 1283 1284 #ifdef FDC_C_HANDLER 1285 /* 1286 * hardware interrupt entry point: must be converted to `fast' 1287 * (in-window) handler. 1288 */ 1289 int 1290 fdc_c_hwintr(arg) 1291 void *arg; 1292 { 1293 struct fdc_softc *fdc = arg; 1294 bus_space_tag_t t = fdc->sc_bustag; 1295 bus_space_handle_t h = fdc->sc_handle; 1296 1297 switch (fdc->sc_itask) { 1298 case FDC_ITASK_NONE: 1299 return (0); 1300 case FDC_ITASK_SENSI: 1301 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1302 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1303 else 1304 fdc->sc_istatus = FDC_ISTATUS_DONE; 1305 FD_SET_SWINTR; 1306 return (1); 1307 case FDC_ITASK_DMA: 1308 /* Proceed with pseudo-dma below */ 1309 break; 1310 default: 1311 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1312 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1313 FD_SET_SWINTR; 1314 return (1); 1315 } 1316 1317 /* 1318 * Pseudo DMA in progress 1319 */ 1320 for (;;) { 1321 u_int8_t msr; 1322 1323 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1324 1325 if ((msr & NE7_RQM) == 0) 1326 /* That's all this round */ 1327 break; 1328 1329 if ((msr & NE7_NDM) == 0) { 1330 fdcresult(fdc); 1331 fdc->sc_istatus = FDC_ISTATUS_DONE; 1332 FD_SET_SWINTR; 1333 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1334 break; 1335 } 1336 1337 /* Another byte can be transferred */ 1338 if ((msr & NE7_DIO) != 0) 1339 *fdc->sc_data = 1340 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1341 else 1342 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1343 *fdc->sc_data); 1344 1345 fdc->sc_data++; 1346 if (--fdc->sc_tc == 0) { 1347 fdc->sc_istatus = FDC_ISTATUS_DONE; 1348 FTC_FLIP; 1349 fdcresult(fdc); 1350 FD_SET_SWINTR; 1351 break; 1352 } 1353 } 1354 return (1); 1355 } 1356 #endif 1357 1358 int 1359 fdcswintr(arg) 1360 void *arg; 1361 { 1362 struct fdc_softc *fdc = arg; 1363 int s; 1364 1365 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1366 /* This (software) interrupt is not for us */ 1367 return (0); 1368 1369 switch (fdc->sc_istatus) { 1370 case FDC_ISTATUS_ERROR: 1371 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1372 break; 1373 case FDC_ISTATUS_SPURIOUS: 1374 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1375 break; 1376 } 1377 1378 s = splbio(); 1379 fdcstate(fdc); 1380 splx(s); 1381 return (1); 1382 } 1383 1384 int 1385 fdcstate(fdc) 1386 struct fdc_softc *fdc; 1387 { 1388 #define st0 fdc->sc_status[0] 1389 #define st1 fdc->sc_status[1] 1390 #define cyl fdc->sc_status[1] 1391 #define FDC_WRFIFO(fdc, c) do { \ 1392 if (fdc_wrfifo(fdc, (c))) { \ 1393 goto xxx; \ 1394 } \ 1395 } while(0) 1396 1397 struct fd_softc *fd; 1398 struct buf *bp; 1399 int read, head, sec, nblks; 1400 struct fd_type *type; 1401 struct ne7_fd_formb *finfo = NULL; 1402 1403 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1404 fdc->sc_state = DORESET; 1405 1406 /* Clear I task/status field */ 1407 fdc->sc_istatus = FDC_ISTATUS_NONE; 1408 fdc->sc_itask = FDC_ITASK_NONE; 1409 1410 loop: 1411 /* Is there a drive for the controller to do a transfer with? */ 1412 fd = fdc->sc_drives.tqh_first; 1413 if (fd == NULL) { 1414 fdc->sc_state = DEVIDLE; 1415 return (0); 1416 } 1417 1418 /* Is there a transfer to this drive? If not, deactivate drive. */ 1419 bp = BUFQ_FIRST(&fd->sc_q); 1420 if (bp == NULL) { 1421 fd->sc_ops = 0; 1422 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1423 fd->sc_active = 0; 1424 goto loop; 1425 } 1426 1427 if (bp->b_flags & B_FORMAT) 1428 finfo = (struct ne7_fd_formb *)bp->b_data; 1429 1430 switch (fdc->sc_state) { 1431 case DEVIDLE: 1432 fdc->sc_errors = 0; 1433 fd->sc_skip = 0; 1434 fd->sc_bcount = bp->b_bcount; 1435 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1436 untimeout(fd_motor_off, fd); 1437 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1438 fdc->sc_state = MOTORWAIT; 1439 return (1); 1440 } 1441 if ((fd->sc_flags & FD_MOTOR) == 0) { 1442 /* Turn on the motor, being careful about pairing. */ 1443 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1444 if (ofd && ofd->sc_flags & FD_MOTOR) { 1445 untimeout(fd_motor_off, ofd); 1446 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1447 } 1448 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1449 fd_set_motor(fdc); 1450 fdc->sc_state = MOTORWAIT; 1451 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1452 /* Allow .25s for motor to stabilize. */ 1453 timeout(fd_motor_on, fd, hz / 4); 1454 } else { 1455 fd->sc_flags &= ~FD_MOTOR_WAIT; 1456 goto loop; 1457 } 1458 return (1); 1459 } 1460 /* Make sure the right drive is selected. */ 1461 fd_set_motor(fdc); 1462 1463 /*FALLTHROUGH*/ 1464 case DOSEEK: 1465 doseek: 1466 if ((fdc->sc_flags & FDC_EIS) && 1467 (bp->b_flags & B_FORMAT) == 0) { 1468 fd->sc_cylin = bp->b_cylinder; 1469 /* We use implied seek */ 1470 goto doio; 1471 } 1472 1473 if (fd->sc_cylin == bp->b_cylinder) 1474 goto doio; 1475 1476 fd->sc_cylin = -1; 1477 fdc->sc_state = SEEKWAIT; 1478 fdc->sc_nstat = 0; 1479 1480 fd->sc_dk.dk_seek++; 1481 1482 disk_busy(&fd->sc_dk); 1483 timeout(fdctimeout, fdc, 4 * hz); 1484 1485 /* specify command */ 1486 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1487 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1488 /* XXX head load time == 6ms */ 1489 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1490 1491 fdc->sc_itask = FDC_ITASK_SENSEI; 1492 /* seek function */ 1493 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1494 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1495 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1496 return (1); 1497 1498 case DOIO: 1499 doio: 1500 if (finfo != NULL) 1501 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1502 (char *)finfo; 1503 type = fd->sc_type; 1504 sec = fd->sc_blkno % type->seccyl; 1505 nblks = type->seccyl - sec; 1506 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1507 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1508 fd->sc_nblks = nblks; 1509 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1510 head = sec / type->sectrac; 1511 sec -= head * type->sectrac; 1512 #ifdef DIAGNOSTIC 1513 {int block; 1514 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1515 if (block != fd->sc_blkno) { 1516 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1517 #ifdef DDB 1518 Debugger(); 1519 #endif 1520 }} 1521 #endif 1522 read = bp->b_flags & B_READ; 1523 1524 /* Setup for pseudo DMA */ 1525 fdc->sc_data = bp->b_data + fd->sc_skip; 1526 fdc->sc_tc = fd->sc_nbytes; 1527 1528 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1529 fdc->sc_reg_drs, type->rate); 1530 #ifdef FD_DEBUG 1531 if (fdc_debug > 1) 1532 printf("fdcstate: doio: %s drive %d " 1533 "track %d head %d sec %d nblks %d\n", 1534 finfo ? "format" : 1535 (read ? "read" : "write"), 1536 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1537 #endif 1538 fdc->sc_state = IOCOMPLETE; 1539 fdc->sc_itask = FDC_ITASK_DMA; 1540 fdc->sc_nstat = 0; 1541 1542 disk_busy(&fd->sc_dk); 1543 1544 /* allow 3 seconds for operation */ 1545 timeout(fdctimeout, fdc, 3 * hz); 1546 1547 if (finfo != NULL) { 1548 /* formatting */ 1549 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1550 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1551 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1552 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1553 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1554 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1555 } else { 1556 if (read) 1557 FDC_WRFIFO(fdc, NE7CMD_READ); 1558 else 1559 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1560 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1561 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1562 FDC_WRFIFO(fdc, head); 1563 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1564 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1565 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1566 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1567 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1568 } 1569 1570 return (1); /* will return later */ 1571 1572 case SEEKWAIT: 1573 untimeout(fdctimeout, fdc); 1574 fdc->sc_state = SEEKCOMPLETE; 1575 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1576 /* allow 1/50 second for heads to settle */ 1577 timeout(fdcpseudointr, fdc, hz / 50); 1578 return (1); /* will return later */ 1579 } 1580 /*FALLTHROUGH*/ 1581 case SEEKCOMPLETE: 1582 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1583 1584 /* Make sure seek really happened. */ 1585 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1586 cyl != bp->b_cylinder * fd->sc_type->step) { 1587 #ifdef FD_DEBUG 1588 if (fdc_debug) 1589 fdcstatus(fdc, "seek failed"); 1590 #endif 1591 fdcretry(fdc); 1592 goto loop; 1593 } 1594 fd->sc_cylin = bp->b_cylinder; 1595 goto doio; 1596 1597 case IOTIMEDOUT: 1598 /* 1599 * Try to abort the I/O operation without resetting 1600 * the chip first. Poke TC and arrange to pick up 1601 * the timed out I/O command's status. 1602 */ 1603 fdc->sc_itask = FDC_ITASK_RESULT; 1604 fdc->sc_state = IOCLEANUPWAIT; 1605 fdc->sc_nstat = 0; 1606 /* 1/10 second should be enough */ 1607 timeout(fdctimeout, fdc, hz/10); 1608 FTC_FLIP; 1609 return (1); 1610 1611 case IOCLEANUPTIMEDOUT: 1612 case SEEKTIMEDOUT: 1613 case RECALTIMEDOUT: 1614 case RESETTIMEDOUT: 1615 fdcstatus(fdc, "timeout"); 1616 1617 /* All other timeouts always roll through to a chip reset */ 1618 fdcretry(fdc); 1619 1620 /* Force reset, no matter what fdcretry() says */ 1621 fdc->sc_state = DORESET; 1622 goto loop; 1623 1624 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1625 untimeout(fdctimeout, fdc); 1626 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1627 fdcretry(fdc); 1628 goto loop; 1629 1630 case IOCOMPLETE: /* IO DONE, post-analyze */ 1631 untimeout(fdctimeout, fdc); 1632 1633 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1634 1635 if (fdc->sc_nstat != 7 || st1 != 0 || 1636 ((st0 & 0xf8) != 0 && 1637 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1638 #ifdef FD_DEBUG 1639 if (fdc_debug) { 1640 fdcstatus(fdc, 1641 bp->b_flags & B_READ 1642 ? "read failed" : "write failed"); 1643 printf("blkno %d nblks %d nstat %d tc %d\n", 1644 fd->sc_blkno, fd->sc_nblks, 1645 fdc->sc_nstat, fdc->sc_tc); 1646 } 1647 #endif 1648 if (fdc->sc_nstat == 7 && 1649 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1650 1651 /* 1652 * Silently retry overruns if no other 1653 * error bit is set. Adjust threshold. 1654 */ 1655 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1656 if (thr < 15) { 1657 thr++; 1658 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1659 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1660 #ifdef FD_DEBUG 1661 if (fdc_debug) 1662 printf("fdc: %d -> threshold\n", thr); 1663 #endif 1664 fdconf(fdc); 1665 fdc->sc_overruns = 0; 1666 } 1667 if (++fdc->sc_overruns < 3) { 1668 fdc->sc_state = DOIO; 1669 goto loop; 1670 } 1671 } 1672 fdcretry(fdc); 1673 goto loop; 1674 } 1675 if (fdc->sc_errors) { 1676 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1677 fd->sc_skip / FD_BSIZE(fd), 1678 (struct disklabel *)NULL); 1679 printf("\n"); 1680 fdc->sc_errors = 0; 1681 } else { 1682 if (--fdc->sc_overruns < -20) { 1683 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1684 if (thr > 0) { 1685 thr--; 1686 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1687 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1688 #ifdef FD_DEBUG 1689 if (fdc_debug) 1690 printf("fdc: %d -> threshold\n", thr); 1691 #endif 1692 fdconf(fdc); 1693 } 1694 fdc->sc_overruns = 0; 1695 } 1696 } 1697 fd->sc_blkno += fd->sc_nblks; 1698 fd->sc_skip += fd->sc_nbytes; 1699 fd->sc_bcount -= fd->sc_nbytes; 1700 if (finfo == NULL && fd->sc_bcount > 0) { 1701 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1702 goto doseek; 1703 } 1704 fdfinish(fd, bp); 1705 goto loop; 1706 1707 case DORESET: 1708 /* try a reset, keep motor on */ 1709 fd_set_motor(fdc); 1710 delay(100); 1711 fdc->sc_nstat = 0; 1712 fdc->sc_itask = FDC_ITASK_SENSEI; 1713 fdc->sc_state = RESETCOMPLETE; 1714 timeout(fdctimeout, fdc, hz / 2); 1715 fdc_reset(fdc); 1716 return (1); /* will return later */ 1717 1718 case RESETCOMPLETE: 1719 untimeout(fdctimeout, fdc); 1720 fdconf(fdc); 1721 1722 /* FALLTHROUGH */ 1723 case DORECAL: 1724 fdc->sc_state = RECALWAIT; 1725 fdc->sc_itask = FDC_ITASK_SENSEI; 1726 fdc->sc_nstat = 0; 1727 timeout(fdctimeout, fdc, 5 * hz); 1728 /* recalibrate function */ 1729 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1730 FDC_WRFIFO(fdc, fd->sc_drive); 1731 return (1); /* will return later */ 1732 1733 case RECALWAIT: 1734 untimeout(fdctimeout, fdc); 1735 fdc->sc_state = RECALCOMPLETE; 1736 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1737 /* allow 1/30 second for heads to settle */ 1738 timeout(fdcpseudointr, fdc, hz / 30); 1739 return (1); /* will return later */ 1740 } 1741 1742 case RECALCOMPLETE: 1743 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1744 #ifdef FD_DEBUG 1745 if (fdc_debug) 1746 fdcstatus(fdc, "recalibrate failed"); 1747 #endif 1748 fdcretry(fdc); 1749 goto loop; 1750 } 1751 fd->sc_cylin = 0; 1752 goto doseek; 1753 1754 case MOTORWAIT: 1755 if (fd->sc_flags & FD_MOTOR_WAIT) 1756 return (1); /* time's not up yet */ 1757 goto doseek; 1758 1759 default: 1760 fdcstatus(fdc, "stray interrupt"); 1761 return (1); 1762 } 1763 #ifdef DIAGNOSTIC 1764 panic("fdcintr: impossible"); 1765 #endif 1766 1767 xxx: 1768 /* 1769 * We get here if the chip locks up in FDC_WRFIFO() 1770 * Cancel any operation and schedule a reset 1771 */ 1772 untimeout(fdctimeout, fdc); 1773 fdcretry(fdc); 1774 (fdc)->sc_state = DORESET; 1775 goto loop; 1776 1777 #undef st0 1778 #undef st1 1779 #undef cyl 1780 } 1781 1782 void 1783 fdcretry(fdc) 1784 struct fdc_softc *fdc; 1785 { 1786 struct fd_softc *fd; 1787 struct buf *bp; 1788 int error = EIO; 1789 1790 fd = fdc->sc_drives.tqh_first; 1791 bp = BUFQ_FIRST(&fd->sc_q); 1792 1793 fdc->sc_overruns = 0; 1794 if (fd->sc_opts & FDOPT_NORETRY) 1795 goto fail; 1796 1797 switch (fdc->sc_errors) { 1798 case 0: 1799 if (fdc->sc_nstat == 7 && 1800 (fdc->sc_status[0] & 0xd8) == 0x40 && 1801 (fdc->sc_status[1] & 0x2) == 0x2) { 1802 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1803 error = EROFS; 1804 goto failsilent; 1805 } 1806 /* try again */ 1807 fdc->sc_state = 1808 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1809 break; 1810 1811 case 1: case 2: case 3: 1812 /* didn't work; try recalibrating */ 1813 fdc->sc_state = DORECAL; 1814 break; 1815 1816 case 4: 1817 if (fdc->sc_nstat == 7 && 1818 fdc->sc_status[0] == 0 && 1819 fdc->sc_status[1] == 0 && 1820 fdc->sc_status[2] == 0) { 1821 /* 1822 * We've retried a few times and we've got 1823 * valid status and all three status bytes 1824 * are zero. Assume this condition is the 1825 * result of no disk loaded into the drive. 1826 */ 1827 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1828 error = ENODEV; 1829 goto failsilent; 1830 } 1831 1832 /* still no go; reset the bastard */ 1833 fdc->sc_state = DORESET; 1834 break; 1835 1836 default: 1837 fail: 1838 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1839 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1840 fd->sc_skip / FD_BSIZE(fd), 1841 (struct disklabel *)NULL); 1842 printf("\n"); 1843 fdcstatus(fdc, "controller status"); 1844 } 1845 1846 failsilent: 1847 bp->b_flags |= B_ERROR; 1848 bp->b_error = error; 1849 fdfinish(fd, bp); 1850 } 1851 fdc->sc_errors++; 1852 } 1853 1854 int 1855 fdsize(dev) 1856 dev_t dev; 1857 { 1858 1859 /* Swapping to floppies would not make sense. */ 1860 return (-1); 1861 } 1862 1863 int 1864 fddump(dev, blkno, va, size) 1865 dev_t dev; 1866 daddr_t blkno; 1867 caddr_t va; 1868 size_t size; 1869 { 1870 1871 /* Not implemented. */ 1872 return (EINVAL); 1873 } 1874 1875 int 1876 fdioctl(dev, cmd, addr, flag, p) 1877 dev_t dev; 1878 u_long cmd; 1879 caddr_t addr; 1880 int flag; 1881 struct proc *p; 1882 { 1883 struct fd_softc *fd; 1884 struct fdc_softc *fdc; 1885 struct fdformat_parms *form_parms; 1886 struct fdformat_cmd *form_cmd; 1887 struct ne7_fd_formb fd_formb; 1888 int il[FD_MAX_NSEC + 1]; 1889 int unit; 1890 int i, j; 1891 int error; 1892 1893 unit = FDUNIT(dev); 1894 if (unit >= fd_cd.cd_ndevs) 1895 return (ENXIO); 1896 1897 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1898 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1899 1900 switch (cmd) { 1901 case DIOCGDINFO: 1902 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1903 return 0; 1904 1905 case DIOCWLABEL: 1906 if ((flag & FWRITE) == 0) 1907 return EBADF; 1908 /* XXX do something */ 1909 return (0); 1910 1911 case DIOCWDINFO: 1912 if ((flag & FWRITE) == 0) 1913 return (EBADF); 1914 1915 error = setdisklabel(fd->sc_dk.dk_label, 1916 (struct disklabel *)addr, 0, 1917 fd->sc_dk.dk_cpulabel); 1918 if (error) 1919 return (error); 1920 1921 error = writedisklabel(dev, fdstrategy, 1922 fd->sc_dk.dk_label, 1923 fd->sc_dk.dk_cpulabel); 1924 return (error); 1925 1926 case DIOCLOCK: 1927 /* 1928 * Nothing to do here, really. 1929 */ 1930 return (0); 1931 1932 case DIOCEJECT: 1933 if (*(int *)addr == 0) { 1934 int part = DISKPART(dev); 1935 /* 1936 * Don't force eject: check that we are the only 1937 * partition open. If so, unlock it. 1938 */ 1939 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1940 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1941 fd->sc_dk.dk_openmask) { 1942 return (EBUSY); 1943 } 1944 } 1945 /* FALLTHROUGH */ 1946 case ODIOCEJECT: 1947 fd_do_eject(fd); 1948 return (0); 1949 1950 case FDIOCGETFORMAT: 1951 form_parms = (struct fdformat_parms *)addr; 1952 form_parms->fdformat_version = FDFORMAT_VERSION; 1953 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1954 form_parms->ncyl = fd->sc_type->cylinders; 1955 form_parms->nspt = fd->sc_type->sectrac; 1956 form_parms->ntrk = fd->sc_type->heads; 1957 form_parms->stepspercyl = fd->sc_type->step; 1958 form_parms->gaplen = fd->sc_type->gap2; 1959 form_parms->fillbyte = fd->sc_type->fillbyte; 1960 form_parms->interleave = fd->sc_type->interleave; 1961 switch (fd->sc_type->rate) { 1962 case FDC_500KBPS: 1963 form_parms->xfer_rate = 500 * 1024; 1964 break; 1965 case FDC_300KBPS: 1966 form_parms->xfer_rate = 300 * 1024; 1967 break; 1968 case FDC_250KBPS: 1969 form_parms->xfer_rate = 250 * 1024; 1970 break; 1971 default: 1972 return (EINVAL); 1973 } 1974 return (0); 1975 1976 case FDIOCSETFORMAT: 1977 if ((flag & FWRITE) == 0) 1978 return (EBADF); /* must be opened for writing */ 1979 1980 form_parms = (struct fdformat_parms *)addr; 1981 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1982 return (EINVAL);/* wrong version of formatting prog */ 1983 1984 i = form_parms->nbps >> 7; 1985 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1986 i & ~(1 << (ffs(i)-1))) 1987 /* not a power-of-two multiple of 128 */ 1988 return (EINVAL); 1989 1990 switch (form_parms->xfer_rate) { 1991 case 500 * 1024: 1992 fd->sc_type->rate = FDC_500KBPS; 1993 break; 1994 case 300 * 1024: 1995 fd->sc_type->rate = FDC_300KBPS; 1996 break; 1997 case 250 * 1024: 1998 fd->sc_type->rate = FDC_250KBPS; 1999 break; 2000 default: 2001 return (EINVAL); 2002 } 2003 2004 if (form_parms->nspt > FD_MAX_NSEC || 2005 form_parms->fillbyte > 0xff || 2006 form_parms->interleave > 0xff) 2007 return EINVAL; 2008 fd->sc_type->sectrac = form_parms->nspt; 2009 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2010 return EINVAL; 2011 fd->sc_type->heads = form_parms->ntrk; 2012 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2013 fd->sc_type->secsize = ffs(i)-1; 2014 fd->sc_type->gap2 = form_parms->gaplen; 2015 fd->sc_type->cylinders = form_parms->ncyl; 2016 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2017 form_parms->nbps / DEV_BSIZE; 2018 fd->sc_type->step = form_parms->stepspercyl; 2019 fd->sc_type->fillbyte = form_parms->fillbyte; 2020 fd->sc_type->interleave = form_parms->interleave; 2021 return (0); 2022 2023 case FDIOCFORMAT_TRACK: 2024 if((flag & FWRITE) == 0) 2025 /* must be opened for writing */ 2026 return (EBADF); 2027 form_cmd = (struct fdformat_cmd *)addr; 2028 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2029 /* wrong version of formatting prog */ 2030 return (EINVAL); 2031 2032 if (form_cmd->head >= fd->sc_type->heads || 2033 form_cmd->cylinder >= fd->sc_type->cylinders) { 2034 return (EINVAL); 2035 } 2036 2037 fd_formb.head = form_cmd->head; 2038 fd_formb.cyl = form_cmd->cylinder; 2039 fd_formb.transfer_rate = fd->sc_type->rate; 2040 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2041 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2042 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2043 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2044 2045 bzero(il, sizeof il); 2046 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2047 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2048 j++; 2049 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2050 j += fd->sc_type->interleave; 2051 } 2052 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2053 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2054 fd_formb.fd_formb_headno(i) = form_cmd->head; 2055 fd_formb.fd_formb_secno(i) = il[i+1]; 2056 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2057 } 2058 2059 return fdformat(dev, &fd_formb, p); 2060 2061 case FDIOCGETOPTS: /* get drive options */ 2062 *(int *)addr = fd->sc_opts; 2063 return (0); 2064 2065 case FDIOCSETOPTS: /* set drive options */ 2066 fd->sc_opts = *(int *)addr; 2067 return (0); 2068 2069 #ifdef FD_DEBUG 2070 case _IO('f', 100): 2071 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2072 fdcresult(fdc); 2073 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2074 for (i = 0; i < fdc->sc_nstat; i++) 2075 printf(" 0x%x", fdc->sc_status[i]); 2076 printf(">\n"); 2077 return (0); 2078 2079 case _IOW('f', 101, int): 2080 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2081 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2082 fdconf(fdc); 2083 return (0); 2084 2085 case _IO('f', 102): 2086 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2087 fdcresult(fdc); 2088 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2089 for (i=0; i< fdc->sc_nstat; i++) 2090 printf(" 0x%x", fdc->sc_status[i]); 2091 printf(">\n"); 2092 return (0); 2093 #endif 2094 default: 2095 return (ENOTTY); 2096 } 2097 2098 #ifdef DIAGNOSTIC 2099 panic("fdioctl: impossible"); 2100 #endif 2101 } 2102 2103 int 2104 fdformat(dev, finfo, p) 2105 dev_t dev; 2106 struct ne7_fd_formb *finfo; 2107 struct proc *p; 2108 { 2109 int rv = 0, s; 2110 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2111 struct fd_type *type = fd->sc_type; 2112 struct buf *bp; 2113 2114 /* set up a buffer header for fdstrategy() */ 2115 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2116 if (bp == 0) 2117 return (ENOBUFS); 2118 2119 PHOLD(p); 2120 bzero((void *)bp, sizeof(struct buf)); 2121 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2122 bp->b_proc = p; 2123 bp->b_dev = dev; 2124 2125 /* 2126 * Calculate a fake blkno, so fdstrategy() would initiate a 2127 * seek to the requested cylinder. 2128 */ 2129 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2130 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2131 / DEV_BSIZE; 2132 2133 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2134 bp->b_data = (caddr_t)finfo; 2135 2136 #ifdef FD_DEBUG 2137 if (fdc_debug) { 2138 int i; 2139 2140 printf("fdformat: blkno 0x%x count %ld\n", 2141 bp->b_blkno, bp->b_bcount); 2142 2143 printf("\tcyl:\t%d\n", finfo->cyl); 2144 printf("\thead:\t%d\n", finfo->head); 2145 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2146 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2147 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2148 printf("\ttrack data:"); 2149 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2150 printf(" [c%d h%d s%d]", 2151 finfo->fd_formb_cylno(i), 2152 finfo->fd_formb_headno(i), 2153 finfo->fd_formb_secno(i) ); 2154 if (finfo->fd_formb_secsize(i) != 2) 2155 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2156 } 2157 printf("\n"); 2158 } 2159 #endif 2160 2161 /* now do the format */ 2162 fdstrategy(bp); 2163 2164 /* ...and wait for it to complete */ 2165 s = splbio(); 2166 while (!(bp->b_flags & B_DONE)) { 2167 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2168 if (rv == EWOULDBLOCK) 2169 break; 2170 } 2171 splx(s); 2172 2173 if (rv == EWOULDBLOCK) { 2174 /* timed out */ 2175 rv = EIO; 2176 biodone(bp); 2177 } 2178 if (bp->b_flags & B_ERROR) { 2179 rv = bp->b_error; 2180 } 2181 PRELE(p); 2182 free(bp, M_TEMP); 2183 return (rv); 2184 } 2185 2186 void 2187 fdgetdisklabel(dev) 2188 dev_t dev; 2189 { 2190 int unit = FDUNIT(dev), i; 2191 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2192 struct disklabel *lp = fd->sc_dk.dk_label; 2193 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2194 2195 bzero(lp, sizeof(struct disklabel)); 2196 bzero(lp, sizeof(struct cpu_disklabel)); 2197 2198 lp->d_type = DTYPE_FLOPPY; 2199 lp->d_secsize = FD_BSIZE(fd); 2200 lp->d_secpercyl = fd->sc_type->seccyl; 2201 lp->d_nsectors = fd->sc_type->sectrac; 2202 lp->d_ncylinders = fd->sc_type->cylinders; 2203 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2204 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2205 lp->d_rpm = 3600; /* XXX like it matters... */ 2206 2207 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2208 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2209 lp->d_interleave = 1; 2210 2211 lp->d_partitions[RAW_PART].p_offset = 0; 2212 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2213 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2214 lp->d_npartitions = RAW_PART + 1; 2215 2216 lp->d_magic = DISKMAGIC; 2217 lp->d_magic2 = DISKMAGIC; 2218 lp->d_checksum = dkcksum(lp); 2219 2220 /* 2221 * Call the generic disklabel extraction routine. If there's 2222 * not a label there, fake it. 2223 */ 2224 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2225 strncpy(lp->d_packname, "default label", 2226 sizeof(lp->d_packname)); 2227 /* 2228 * Reset the partition info; it might have gotten 2229 * trashed in readdisklabel(). 2230 * 2231 * XXX Why do we have to do this? readdisklabel() 2232 * should be safe... 2233 */ 2234 for (i = 0; i < MAXPARTITIONS; ++i) { 2235 lp->d_partitions[i].p_offset = 0; 2236 if (i == RAW_PART) { 2237 lp->d_partitions[i].p_size = 2238 lp->d_secpercyl * lp->d_ncylinders; 2239 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2240 } else { 2241 lp->d_partitions[i].p_size = 0; 2242 lp->d_partitions[i].p_fstype = FS_UNUSED; 2243 } 2244 } 2245 lp->d_npartitions = RAW_PART + 1; 2246 } 2247 } 2248 2249 void 2250 fd_do_eject(fd) 2251 struct fd_softc *fd; 2252 { 2253 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2254 2255 if (CPU_ISSUN4C) { 2256 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2257 delay(10); 2258 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2259 return; 2260 } 2261 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2262 bus_space_tag_t t = fdc->sc_bustag; 2263 bus_space_handle_t h = fdc->sc_handle; 2264 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2265 2266 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2267 delay(10); 2268 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2269 return; 2270 } 2271 } 2272 2273 #ifdef MEMORY_DISK_HOOKS 2274 int fd_read_md_image __P((size_t *, caddr_t *)); 2275 #endif 2276 2277 /* ARGSUSED */ 2278 void 2279 fd_mountroot_hook(dev) 2280 struct device *dev; 2281 { 2282 int c; 2283 2284 fd_do_eject((struct fd_softc *)dev); 2285 printf("Insert filesystem floppy and press return."); 2286 for (;;) { 2287 c = cngetc(); 2288 if ((c == '\r') || (c == '\n')) { 2289 printf("\n"); 2290 break; 2291 } 2292 } 2293 } 2294 2295 #ifdef MEMORY_DISK_HOOKS 2296 2297 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2298 2299 int 2300 fd_read_md_image(sizep, addrp) 2301 size_t *sizep; 2302 caddr_t *addrp; 2303 { 2304 struct buf buf, *bp = &buf; 2305 dev_t dev; 2306 off_t offset; 2307 caddr_t addr; 2308 2309 dev = makedev(54,0); /* XXX */ 2310 2311 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2312 *addrp = addr; 2313 2314 if (fdopen(dev, 0, S_IFCHR, NULL)) 2315 panic("fd: mountroot: fdopen"); 2316 2317 offset = 0; 2318 2319 for (;;) { 2320 bp->b_dev = dev; 2321 bp->b_error = 0; 2322 bp->b_resid = 0; 2323 bp->b_proc = NULL; 2324 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2325 bp->b_blkno = btodb(offset); 2326 bp->b_bcount = DEV_BSIZE; 2327 bp->b_data = addr; 2328 fdstrategy(bp); 2329 while ((bp->b_flags & B_DONE) == 0) { 2330 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2331 } 2332 if (bp->b_error) 2333 panic("fd: mountroot: fdread error %d", bp->b_error); 2334 2335 if (bp->b_resid != 0) 2336 break; 2337 2338 addr += DEV_BSIZE; 2339 offset += DEV_BSIZE; 2340 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2341 break; 2342 } 2343 (void)fdclose(dev, 0, S_IFCHR, NULL); 2344 *sizep = offset; 2345 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2346 return (0); 2347 } 2348 #endif 2349
Indexes created Fri Oct 03 02:09:57 GMT 2025