fd.c revision 1.73
1 /* $NetBSD: fd.c,v 1.73 2000/01/23 22:19:12 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 void 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 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 439 } 440 441 /* 442 * Arguments passed between fdcattach and fdprobe. 443 */ 444 struct fdc_attach_args { 445 int fa_drive; 446 struct fd_type *fa_deftype; 447 }; 448 449 /* 450 * Print the location of a disk drive (called just before attaching the 451 * the drive). If `fdc' is not NULL, the drive was found but was not 452 * in the system config file; print the drive name as well. 453 * Return QUIET (config_find ignores this if the device was configured) to 454 * avoid printing `fdN not configured' messages. 455 */ 456 int 457 fdprint(aux, fdc) 458 void *aux; 459 const char *fdc; 460 { 461 register struct fdc_attach_args *fa = aux; 462 463 if (!fdc) 464 printf(" drive %d", fa->fa_drive); 465 return (QUIET); 466 } 467 468 /* 469 * Configure several parameters and features on the FDC. 470 * Return 0 on success. 471 */ 472 static int 473 fdconf(fdc) 474 struct fdc_softc *fdc; 475 { 476 int vroom; 477 478 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 479 return (-1); 480 481 /* 482 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 483 * the PROM thinks is appropriate. 484 */ 485 if ((vroom = fdc->sc_status[7]) == 0) 486 vroom = 0x64; 487 488 /* Configure controller to use FIFO and Implied Seek */ 489 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 490 return (-1); 491 if (fdc_wrfifo(fdc, vroom) != 0) 492 return (-1); 493 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 494 return (-1); 495 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 496 return (-1); 497 /* No result phase for the NE7CMD_CFG command */ 498 499 if ((fdc->sc_flags & FDC_82077) != 0) { 500 /* Lock configuration across soft resets. */ 501 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 502 fdcresult(fdc) != 1) { 503 #ifdef DEBUG 504 printf("fdconf: CFGLOCK failed"); 505 #endif 506 return (-1); 507 } 508 } 509 510 return (0); 511 #if 0 512 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 513 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 514 if (fdc_debug) 515 printf("[version cmd]"); 516 } 517 #endif 518 } 519 520 void 521 fdcattach_mainbus(parent, self, aux) 522 struct device *parent, *self; 523 void *aux; 524 { 525 struct fdc_softc *fdc = (void *)self; 526 struct mainbus_attach_args *ma = aux; 527 528 fdc->sc_bustag = ma->ma_bustag; 529 530 if (ma->ma_promvaddr != 0) 531 fdc->sc_handle = (bus_space_handle_t)ma->ma_promvaddr; 532 else { 533 if (bus_space_map2( 534 ma->ma_bustag, 535 ma->ma_iospace, 536 ma->ma_paddr, 537 ma->ma_size, 538 BUS_SPACE_MAP_LINEAR, 539 0, 540 &fdc->sc_handle) != 0) { 541 printf("%s: cannot map registers\n", self->dv_xname); 542 return; 543 } 544 } 545 546 establish_chip_type(fdc, 547 ma->ma_bustag, 548 ma->ma_iospace, 549 ma->ma_paddr, 550 ma->ma_size, 551 fdc->sc_handle); 552 553 fdcattach(fdc, ma->ma_pri); 554 } 555 556 void 557 fdcattach_obio(parent, self, aux) 558 struct device *parent, *self; 559 void *aux; 560 { 561 struct fdc_softc *fdc = (void *)self; 562 union obio_attach_args *uoba = aux; 563 struct sbus_attach_args *sa = &uoba->uoba_sbus; 564 565 fdc->sc_bustag = sa->sa_bustag; 566 567 if (sa->sa_npromvaddrs != 0) 568 fdc->sc_handle = (bus_space_handle_t)sa->sa_promvaddrs[0]; 569 else { 570 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 571 sa->sa_offset, 572 sa->sa_size, 573 BUS_SPACE_MAP_LINEAR, 574 0, 575 &fdc->sc_handle) != 0) { 576 printf("%s: cannot map control registers\n", 577 self->dv_xname); 578 return; 579 } 580 } 581 582 establish_chip_type(fdc, 583 sa->sa_bustag, 584 sa->sa_slot, 585 sa->sa_offset, 586 sa->sa_size, 587 fdc->sc_handle); 588 589 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 590 printf(": no drives attached\n"); 591 return; 592 } 593 594 if (sa->sa_nintr != 0) 595 fdcattach(fdc, sa->sa_pri); 596 } 597 598 void 599 fdcattach(fdc, pri) 600 struct fdc_softc *fdc; 601 int pri; 602 { 603 struct fdc_attach_args fa; 604 char code; 605 606 fdc->sc_state = DEVIDLE; 607 fdc->sc_itask = FDC_ITASK_NONE; 608 fdc->sc_istatus = FDC_ISTATUS_NONE; 609 fdc->sc_flags |= FDC_EIS; 610 TAILQ_INIT(&fdc->sc_drives); 611 612 if ((fdc->sc_flags & FDC_82077) != 0) { 613 fdc->sc_reg_msr = FDREG77_MSR; 614 fdc->sc_reg_fifo = FDREG77_FIFO; 615 fdc->sc_reg_dor = FDREG77_DOR; 616 code = '7'; 617 } else { 618 fdc->sc_reg_msr = FDREG72_MSR; 619 fdc->sc_reg_fifo = FDREG72_FIFO; 620 fdc->sc_reg_dor = 0; 621 code = '2'; 622 } 623 624 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 625 626 /* 627 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 628 * Note: CFG_EFIFO is active-low, initial threshold value: 8 629 */ 630 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 631 if (fdconf(fdc) != 0) { 632 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 633 return; 634 } 635 636 #ifdef FDC_C_HANDLER 637 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 638 fdc_c_hwintr, fdc); 639 #else 640 fdciop = &fdc->sc_io; 641 (void)bus_intr_establish(fdc->sc_bustag, pri, 642 BUS_INTR_ESTABLISH_FASTTRAP, 643 (int (*) __P((void *)))fdchwintr, NULL); 644 #endif 645 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 646 BUS_INTR_ESTABLISH_SOFTINTR, 647 fdcswintr, fdc); 648 649 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 650 651 /* physical limit: four drives per controller. */ 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 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 656 } 657 } 658 659 int 660 fdmatch(parent, match, aux) 661 struct device *parent; 662 struct cfdata *match; 663 void *aux; 664 { 665 struct fdc_softc *fdc = (void *)parent; 666 bus_space_tag_t t = fdc->sc_bustag; 667 bus_space_handle_t h = fdc->sc_handle; 668 struct fdc_attach_args *fa = aux; 669 int drive = fa->fa_drive; 670 int n, ok; 671 672 if (drive > 0) 673 /* XXX - for now, punt on more than one drive */ 674 return (0); 675 676 if ((fdc->sc_flags & FDC_82077) != 0) { 677 /* select drive and turn on motor */ 678 bus_space_write_1(t, h, fdc->sc_reg_dor, 679 drive | FDO_FRST | FDO_MOEN(drive)); 680 /* wait for motor to spin up */ 681 delay(250000); 682 } else { 683 auxregbisc(AUXIO4C_FDS, 0); 684 } 685 fdc->sc_nstat = 0; 686 fdc_wrfifo(fdc, NE7CMD_RECAL); 687 fdc_wrfifo(fdc, drive); 688 689 /* Wait for recalibration to complete */ 690 for (n = 0; n < 10000; n++) { 691 u_int8_t v; 692 693 delay(1000); 694 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 695 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 696 /* wait a bit longer till device *really* is ready */ 697 delay(100000); 698 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 699 break; 700 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 701 /* 702 * Got `invalid command'; we interpret it 703 * to mean that the re-calibrate hasn't in 704 * fact finished yet 705 */ 706 continue; 707 break; 708 } 709 } 710 n = fdc->sc_nstat; 711 #ifdef FD_DEBUG 712 if (fdc_debug) { 713 int i; 714 printf("fdprobe: %d stati:", n); 715 for (i = 0; i < n; i++) 716 printf(" 0x%x", fdc->sc_status[i]); 717 printf("\n"); 718 } 719 #endif 720 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 721 722 /* turn off motor */ 723 if ((fdc->sc_flags & FDC_82077) != 0) { 724 /* deselect drive and turn motor off */ 725 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 726 } else { 727 auxregbisc(0, AUXIO4C_FDS); 728 } 729 730 return (ok); 731 } 732 733 /* 734 * Controller is working, and drive responded. Attach it. 735 */ 736 void 737 fdattach(parent, self, aux) 738 struct device *parent, *self; 739 void *aux; 740 { 741 struct fdc_softc *fdc = (void *)parent; 742 struct fd_softc *fd = (void *)self; 743 struct fdc_attach_args *fa = aux; 744 struct fd_type *type = fa->fa_deftype; 745 int drive = fa->fa_drive; 746 747 /* XXX Allow `flags' to override device type? */ 748 749 if (type) 750 printf(": %s %d cyl, %d head, %d sec\n", type->name, 751 type->cylinders, type->heads, type->sectrac); 752 else 753 printf(": density unknown\n"); 754 755 BUFQ_INIT(&fd->sc_q); 756 fd->sc_cylin = -1; 757 fd->sc_drive = drive; 758 fd->sc_deftype = type; 759 fdc->sc_fd[drive] = fd; 760 761 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 762 fdc_wrfifo(fdc, type->steprate); 763 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 764 765 /* 766 * Initialize and attach the disk structure. 767 */ 768 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 769 fd->sc_dk.dk_driver = &fddkdriver; 770 disk_attach(&fd->sc_dk); 771 772 /* 773 * Establish a mountroot_hook anyway in case we booted 774 * with RB_ASKNAME and get selected as the boot device. 775 */ 776 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 777 778 /* Make sure the drive motor gets turned off at shutdown time. */ 779 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 780 781 /* XXX Need to do some more fiddling with sc_dk. */ 782 dk_establish(&fd->sc_dk, &fd->sc_dv); 783 } 784 785 __inline struct fd_type * 786 fd_dev_to_type(fd, dev) 787 struct fd_softc *fd; 788 dev_t dev; 789 { 790 int type = FDTYPE(dev); 791 792 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 793 return (NULL); 794 return (type ? &fd_types[type - 1] : fd->sc_deftype); 795 } 796 797 void 798 fdstrategy(bp) 799 register struct buf *bp; /* IO operation to perform */ 800 { 801 struct fd_softc *fd; 802 int unit = FDUNIT(bp->b_dev); 803 int sz; 804 int s; 805 806 /* Valid unit, controller, and request? */ 807 if (unit >= fd_cd.cd_ndevs || 808 (fd = fd_cd.cd_devs[unit]) == 0 || 809 bp->b_blkno < 0 || 810 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 811 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 812 (bp->b_flags & B_FORMAT) == 0)) { 813 bp->b_error = EINVAL; 814 goto bad; 815 } 816 817 /* If it's a null transfer, return immediately. */ 818 if (bp->b_bcount == 0) 819 goto done; 820 821 sz = howmany(bp->b_bcount, DEV_BSIZE); 822 823 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 824 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 825 - bp->b_blkno; 826 if (sz == 0) { 827 /* If exactly at end of disk, return EOF. */ 828 bp->b_resid = bp->b_bcount; 829 goto done; 830 } 831 if (sz < 0) { 832 /* If past end of disk, return EINVAL. */ 833 bp->b_error = EINVAL; 834 goto bad; 835 } 836 /* Otherwise, truncate request. */ 837 bp->b_bcount = sz << DEV_BSHIFT; 838 } 839 840 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 841 (FD_BSIZE(fd) * fd->sc_type->seccyl); 842 843 #ifdef FD_DEBUG 844 if (fdc_debug > 1) 845 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 846 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 847 #endif 848 849 /* Queue transfer on drive, activate drive and controller if idle. */ 850 s = splbio(); 851 disksort_cylinder(&fd->sc_q, bp); 852 untimeout(fd_motor_off, fd); /* a good idea */ 853 if (fd->sc_active == 0) 854 fdstart(fd); 855 #ifdef DIAGNOSTIC 856 else { 857 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 858 if (fdc->sc_state == DEVIDLE) { 859 printf("fdstrategy: controller inactive\n"); 860 fdcstart(fdc); 861 } 862 } 863 #endif 864 splx(s); 865 return; 866 867 bad: 868 bp->b_flags |= B_ERROR; 869 done: 870 /* Toss transfer; we're done early. */ 871 biodone(bp); 872 } 873 874 void 875 fdstart(fd) 876 struct fd_softc *fd; 877 { 878 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 879 int active = fdc->sc_drives.tqh_first != 0; 880 881 /* Link into controller queue. */ 882 fd->sc_active = 1; 883 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 884 885 /* If controller not already active, start it. */ 886 if (!active) 887 fdcstart(fdc); 888 } 889 890 void 891 fdfinish(fd, bp) 892 struct fd_softc *fd; 893 struct buf *bp; 894 { 895 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 896 897 /* 898 * Move this drive to the end of the queue to give others a `fair' 899 * chance. We only force a switch if N operations are completed while 900 * another drive is waiting to be serviced, since there is a long motor 901 * startup delay whenever we switch. 902 */ 903 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 904 fd->sc_ops = 0; 905 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 906 if (BUFQ_NEXT(bp) != NULL) { 907 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 908 } else 909 fd->sc_active = 0; 910 } 911 bp->b_resid = fd->sc_bcount; 912 fd->sc_skip = 0; 913 BUFQ_REMOVE(&fd->sc_q, bp); 914 915 biodone(bp); 916 /* turn off motor 5s from now */ 917 timeout(fd_motor_off, fd, 5 * hz); 918 fdc->sc_state = DEVIDLE; 919 } 920 921 void 922 fdc_reset(fdc) 923 struct fdc_softc *fdc; 924 { 925 bus_space_tag_t t = fdc->sc_bustag; 926 bus_space_handle_t h = fdc->sc_handle; 927 928 if ((fdc->sc_flags & FDC_82077) != 0) { 929 bus_space_write_1(t, h, fdc->sc_reg_dor, 930 FDO_FDMAEN | FDO_MOEN(0)); 931 } 932 933 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 934 delay(10); 935 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 936 937 if ((fdc->sc_flags & FDC_82077) != 0) { 938 bus_space_write_1(t, h, fdc->sc_reg_dor, 939 FDO_FRST | FDO_FDMAEN | FDO_DS); 940 } 941 #ifdef FD_DEBUG 942 if (fdc_debug) 943 printf("fdc reset\n"); 944 #endif 945 } 946 947 void 948 fd_set_motor(fdc) 949 struct fdc_softc *fdc; 950 { 951 struct fd_softc *fd; 952 u_char status; 953 int n; 954 955 if ((fdc->sc_flags & FDC_82077) != 0) { 956 status = FDO_FRST | FDO_FDMAEN; 957 if ((fd = fdc->sc_drives.tqh_first) != NULL) 958 status |= fd->sc_drive; 959 960 for (n = 0; n < 4; n++) 961 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 962 status |= FDO_MOEN(n); 963 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 964 fdc->sc_reg_dor, status); 965 } else { 966 967 for (n = 0; n < 4; n++) { 968 if ((fd = fdc->sc_fd[n]) != NULL && 969 (fd->sc_flags & FD_MOTOR) != 0) { 970 auxregbisc(AUXIO4C_FDS, 0); 971 return; 972 } 973 } 974 auxregbisc(0, AUXIO4C_FDS); 975 } 976 } 977 978 void 979 fd_motor_off(arg) 980 void *arg; 981 { 982 struct fd_softc *fd = arg; 983 int s; 984 985 s = splbio(); 986 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 987 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 988 splx(s); 989 } 990 991 void 992 fd_motor_on(arg) 993 void *arg; 994 { 995 struct fd_softc *fd = arg; 996 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 997 int s; 998 999 s = splbio(); 1000 fd->sc_flags &= ~FD_MOTOR_WAIT; 1001 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1002 (void) fdcstate(fdc); 1003 splx(s); 1004 } 1005 1006 /* 1007 * Get status bytes off the FDC after a command has finished 1008 * Returns the number of status bytes read; -1 on error. 1009 * The return value is also stored in `sc_nstat'. 1010 */ 1011 int 1012 fdcresult(fdc) 1013 struct fdc_softc *fdc; 1014 { 1015 bus_space_tag_t t = fdc->sc_bustag; 1016 bus_space_handle_t h = fdc->sc_handle; 1017 int j, n = 0; 1018 1019 for (j = 10000; j; j--) { 1020 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1021 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1022 if (v == NE7_RQM) 1023 return (fdc->sc_nstat = n); 1024 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1025 if (n >= sizeof(fdc->sc_status)) { 1026 log(LOG_ERR, "fdcresult: overrun\n"); 1027 return (-1); 1028 } 1029 fdc->sc_status[n++] = 1030 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1031 } else 1032 delay(1); 1033 } 1034 1035 log(LOG_ERR, "fdcresult: timeout\n"); 1036 return (fdc->sc_nstat = -1); 1037 } 1038 1039 /* 1040 * Write a command byte to the FDC. 1041 * Returns 0 on success; -1 on failure (i.e. timeout) 1042 */ 1043 int 1044 fdc_wrfifo(fdc, x) 1045 struct fdc_softc *fdc; 1046 u_int8_t x; 1047 { 1048 bus_space_tag_t t = fdc->sc_bustag; 1049 bus_space_handle_t h = fdc->sc_handle; 1050 int i; 1051 1052 for (i = 100000; i-- > 0;) { 1053 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1054 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1055 /* The chip is ready */ 1056 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1057 return (0); 1058 } 1059 delay(1); 1060 } 1061 return (-1); 1062 } 1063 1064 int 1065 fdopen(dev, flags, fmt, p) 1066 dev_t dev; 1067 int flags, fmt; 1068 struct proc *p; 1069 { 1070 int unit, pmask; 1071 struct fd_softc *fd; 1072 struct fd_type *type; 1073 1074 unit = FDUNIT(dev); 1075 if (unit >= fd_cd.cd_ndevs) 1076 return (ENXIO); 1077 fd = fd_cd.cd_devs[unit]; 1078 if (fd == NULL) 1079 return (ENXIO); 1080 type = fd_dev_to_type(fd, dev); 1081 if (type == NULL) 1082 return (ENXIO); 1083 1084 if ((fd->sc_flags & FD_OPEN) != 0 && 1085 fd->sc_type != type) 1086 return (EBUSY); 1087 1088 fd->sc_type = type; 1089 fd->sc_cylin = -1; 1090 fd->sc_flags |= FD_OPEN; 1091 1092 /* 1093 * Only update the disklabel if we're not open anywhere else. 1094 */ 1095 if (fd->sc_dk.dk_openmask == 0) 1096 fdgetdisklabel(dev); 1097 1098 pmask = (1 << DISKPART(dev)); 1099 1100 switch (fmt) { 1101 case S_IFCHR: 1102 fd->sc_dk.dk_copenmask |= pmask; 1103 break; 1104 1105 case S_IFBLK: 1106 fd->sc_dk.dk_bopenmask |= pmask; 1107 break; 1108 } 1109 fd->sc_dk.dk_openmask = 1110 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1111 1112 return (0); 1113 } 1114 1115 int 1116 fdclose(dev, flags, fmt, p) 1117 dev_t dev; 1118 int flags, fmt; 1119 struct proc *p; 1120 { 1121 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1122 int pmask = (1 << DISKPART(dev)); 1123 1124 fd->sc_flags &= ~FD_OPEN; 1125 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1126 1127 switch (fmt) { 1128 case S_IFCHR: 1129 fd->sc_dk.dk_copenmask &= ~pmask; 1130 break; 1131 1132 case S_IFBLK: 1133 fd->sc_dk.dk_bopenmask &= ~pmask; 1134 break; 1135 } 1136 fd->sc_dk.dk_openmask = 1137 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1138 1139 return (0); 1140 } 1141 1142 int 1143 fdread(dev, uio, flag) 1144 dev_t dev; 1145 struct uio *uio; 1146 int flag; 1147 { 1148 1149 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1150 } 1151 1152 int 1153 fdwrite(dev, uio, flag) 1154 dev_t dev; 1155 struct uio *uio; 1156 int flag; 1157 { 1158 1159 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1160 } 1161 1162 void 1163 fdcstart(fdc) 1164 struct fdc_softc *fdc; 1165 { 1166 1167 #ifdef DIAGNOSTIC 1168 /* only got here if controller's drive queue was inactive; should 1169 be in idle state */ 1170 if (fdc->sc_state != DEVIDLE) { 1171 printf("fdcstart: not idle\n"); 1172 return; 1173 } 1174 #endif 1175 (void) fdcstate(fdc); 1176 } 1177 1178 void 1179 fdcstatus(fdc, s) 1180 struct fdc_softc *fdc; 1181 char *s; 1182 { 1183 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1184 int n; 1185 char bits[64]; 1186 1187 /* Just print last status */ 1188 n = fdc->sc_nstat; 1189 1190 #if 0 1191 /* 1192 * A 82072 seems to return <invalid command> on 1193 * gratuitous Sense Interrupt commands. 1194 */ 1195 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1196 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1197 (void) fdcresult(fdc); 1198 n = 2; 1199 } 1200 #endif 1201 1202 printf("%s: %s: state %d", 1203 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1204 1205 switch (n) { 1206 case 0: 1207 printf("\n"); 1208 break; 1209 case 2: 1210 printf(" (st0 %s cyl %d)\n", 1211 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1212 bits, sizeof(bits)), fdc->sc_status[1]); 1213 break; 1214 case 7: 1215 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1216 NE7_ST0BITS, bits, sizeof(bits))); 1217 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1218 NE7_ST1BITS, bits, sizeof(bits))); 1219 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1220 NE7_ST2BITS, bits, sizeof(bits))); 1221 printf(" cyl %d head %d sec %d)\n", 1222 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1223 break; 1224 #ifdef DIAGNOSTIC 1225 default: 1226 printf(" fdcstatus: weird size: %d\n", n); 1227 break; 1228 #endif 1229 } 1230 } 1231 1232 void 1233 fdctimeout(arg) 1234 void *arg; 1235 { 1236 struct fdc_softc *fdc = arg; 1237 struct fd_softc *fd; 1238 int s; 1239 1240 s = splbio(); 1241 fd = fdc->sc_drives.tqh_first; 1242 if (fd == NULL) { 1243 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1244 fdc->sc_dev.dv_xname, 1245 fdc->sc_state, fdc->sc_istatus); 1246 fdc->sc_state = DEVIDLE; 1247 goto out; 1248 } 1249 1250 if (BUFQ_FIRST(&fd->sc_q) != NULL) 1251 fdc->sc_state++; 1252 else 1253 fdc->sc_state = DEVIDLE; 1254 1255 (void) fdcstate(fdc); 1256 out: 1257 splx(s); 1258 1259 } 1260 1261 void 1262 fdcpseudointr(arg) 1263 void *arg; 1264 { 1265 struct fdc_softc *fdc = arg; 1266 int s; 1267 1268 /* Just ensure it has the right spl. */ 1269 s = splbio(); 1270 (void) fdcstate(fdc); 1271 splx(s); 1272 } 1273 1274 1275 #ifdef FDC_C_HANDLER 1276 /* 1277 * hardware interrupt entry point: must be converted to `fast' 1278 * (in-window) handler. 1279 */ 1280 int 1281 fdc_c_hwintr(arg) 1282 void *arg; 1283 { 1284 struct fdc_softc *fdc = arg; 1285 bus_space_tag_t t = fdc->sc_bustag; 1286 bus_space_handle_t h = fdc->sc_handle; 1287 1288 switch (fdc->sc_itask) { 1289 case FDC_ITASK_NONE: 1290 return (0); 1291 case FDC_ITASK_SENSI: 1292 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1293 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1294 else 1295 fdc->sc_istatus = FDC_ISTATUS_DONE; 1296 FD_SET_SWINTR; 1297 return (1); 1298 case FDC_ITASK_DMA: 1299 /* Proceed with pseudo-dma below */ 1300 break; 1301 default: 1302 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1303 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1304 FD_SET_SWINTR; 1305 return (1); 1306 } 1307 1308 /* 1309 * Pseudo DMA in progress 1310 */ 1311 for (;;) { 1312 u_int8_t msr; 1313 1314 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1315 1316 if ((msr & NE7_RQM) == 0) 1317 /* That's all this round */ 1318 break; 1319 1320 if ((msr & NE7_NDM) == 0) { 1321 fdcresult(fdc); 1322 fdc->sc_istatus = FDC_ISTATUS_DONE; 1323 FD_SET_SWINTR; 1324 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1325 break; 1326 } 1327 1328 /* Another byte can be transferred */ 1329 if ((msr & NE7_DIO) != 0) 1330 *fdc->sc_data = 1331 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1332 else 1333 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1334 *fdc->sc_data); 1335 1336 fdc->sc_data++; 1337 if (--fdc->sc_tc == 0) { 1338 fdc->sc_istatus = FDC_ISTATUS_DONE; 1339 FTC_FLIP; 1340 fdcresult(fdc); 1341 FD_SET_SWINTR; 1342 break; 1343 } 1344 } 1345 return (1); 1346 } 1347 #endif 1348 1349 int 1350 fdcswintr(arg) 1351 void *arg; 1352 { 1353 struct fdc_softc *fdc = arg; 1354 int s; 1355 1356 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1357 /* This (software) interrupt is not for us */ 1358 return (0); 1359 1360 switch (fdc->sc_istatus) { 1361 case FDC_ISTATUS_ERROR: 1362 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1363 break; 1364 case FDC_ISTATUS_SPURIOUS: 1365 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1366 break; 1367 } 1368 1369 s = splbio(); 1370 fdcstate(fdc); 1371 splx(s); 1372 return (1); 1373 } 1374 1375 int 1376 fdcstate(fdc) 1377 struct fdc_softc *fdc; 1378 { 1379 #define st0 fdc->sc_status[0] 1380 #define st1 fdc->sc_status[1] 1381 #define cyl fdc->sc_status[1] 1382 #define FDC_WRFIFO(fdc, c) do { \ 1383 if (fdc_wrfifo(fdc, (c))) { \ 1384 goto xxx; \ 1385 } \ 1386 } while(0) 1387 1388 struct fd_softc *fd; 1389 struct buf *bp; 1390 int read, head, sec, nblks; 1391 struct fd_type *type; 1392 struct ne7_fd_formb *finfo = NULL; 1393 1394 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1395 fdc->sc_state = DORESET; 1396 1397 /* Clear I task/status field */ 1398 fdc->sc_istatus = FDC_ISTATUS_NONE; 1399 fdc->sc_itask = FDC_ITASK_NONE; 1400 1401 loop: 1402 /* Is there a drive for the controller to do a transfer with? */ 1403 fd = fdc->sc_drives.tqh_first; 1404 if (fd == NULL) { 1405 fdc->sc_state = DEVIDLE; 1406 return (0); 1407 } 1408 1409 /* Is there a transfer to this drive? If not, deactivate drive. */ 1410 bp = BUFQ_FIRST(&fd->sc_q); 1411 if (bp == NULL) { 1412 fd->sc_ops = 0; 1413 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1414 fd->sc_active = 0; 1415 goto loop; 1416 } 1417 1418 if (bp->b_flags & B_FORMAT) 1419 finfo = (struct ne7_fd_formb *)bp->b_data; 1420 1421 switch (fdc->sc_state) { 1422 case DEVIDLE: 1423 fdc->sc_errors = 0; 1424 fd->sc_skip = 0; 1425 fd->sc_bcount = bp->b_bcount; 1426 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1427 untimeout(fd_motor_off, fd); 1428 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1429 fdc->sc_state = MOTORWAIT; 1430 return (1); 1431 } 1432 if ((fd->sc_flags & FD_MOTOR) == 0) { 1433 /* Turn on the motor, being careful about pairing. */ 1434 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1435 if (ofd && ofd->sc_flags & FD_MOTOR) { 1436 untimeout(fd_motor_off, ofd); 1437 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1438 } 1439 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1440 fd_set_motor(fdc); 1441 fdc->sc_state = MOTORWAIT; 1442 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1443 /* Allow .25s for motor to stabilize. */ 1444 timeout(fd_motor_on, fd, hz / 4); 1445 } else { 1446 fd->sc_flags &= ~FD_MOTOR_WAIT; 1447 goto loop; 1448 } 1449 return (1); 1450 } 1451 /* Make sure the right drive is selected. */ 1452 fd_set_motor(fdc); 1453 1454 /*FALLTHROUGH*/ 1455 case DOSEEK: 1456 doseek: 1457 if ((fdc->sc_flags & FDC_EIS) && 1458 (bp->b_flags & B_FORMAT) == 0) { 1459 fd->sc_cylin = bp->b_cylinder; 1460 /* We use implied seek */ 1461 goto doio; 1462 } 1463 1464 if (fd->sc_cylin == bp->b_cylinder) 1465 goto doio; 1466 1467 fd->sc_cylin = -1; 1468 fdc->sc_state = SEEKWAIT; 1469 fdc->sc_nstat = 0; 1470 1471 fd->sc_dk.dk_seek++; 1472 1473 disk_busy(&fd->sc_dk); 1474 timeout(fdctimeout, fdc, 4 * hz); 1475 1476 /* specify command */ 1477 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1478 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1479 /* XXX head load time == 6ms */ 1480 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1481 1482 fdc->sc_itask = FDC_ITASK_SENSEI; 1483 /* seek function */ 1484 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1485 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1486 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1487 return (1); 1488 1489 case DOIO: 1490 doio: 1491 if (finfo != NULL) 1492 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1493 (char *)finfo; 1494 type = fd->sc_type; 1495 sec = fd->sc_blkno % type->seccyl; 1496 nblks = type->seccyl - sec; 1497 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1498 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1499 fd->sc_nblks = nblks; 1500 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1501 head = sec / type->sectrac; 1502 sec -= head * type->sectrac; 1503 #ifdef DIAGNOSTIC 1504 {int block; 1505 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1506 if (block != fd->sc_blkno) { 1507 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1508 #ifdef DDB 1509 Debugger(); 1510 #endif 1511 }} 1512 #endif 1513 read = bp->b_flags & B_READ; 1514 1515 /* Setup for pseudo DMA */ 1516 fdc->sc_data = bp->b_data + fd->sc_skip; 1517 fdc->sc_tc = fd->sc_nbytes; 1518 1519 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1520 fdc->sc_reg_drs, type->rate); 1521 #ifdef FD_DEBUG 1522 if (fdc_debug > 1) 1523 printf("fdcintr: %s drive %d " 1524 "track %d head %d sec %d nblks %d\n", 1525 finfo ? "format" : 1526 (read ? "read" : "write"), 1527 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1528 #endif 1529 fdc->sc_state = IOCOMPLETE; 1530 fdc->sc_itask = FDC_ITASK_DMA; 1531 fdc->sc_nstat = 0; 1532 1533 disk_busy(&fd->sc_dk); 1534 1535 /* allow 3 seconds for operation */ 1536 timeout(fdctimeout, fdc, 3 * hz); 1537 1538 if (finfo != NULL) { 1539 /* formatting */ 1540 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1541 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1542 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1543 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1544 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1545 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1546 } else { 1547 if (read) 1548 FDC_WRFIFO(fdc, NE7CMD_READ); 1549 else 1550 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1551 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1552 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1553 FDC_WRFIFO(fdc, head); 1554 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1555 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1556 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1557 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1558 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1559 } 1560 1561 return (1); /* will return later */ 1562 1563 case SEEKWAIT: 1564 untimeout(fdctimeout, fdc); 1565 fdc->sc_state = SEEKCOMPLETE; 1566 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1567 /* allow 1/50 second for heads to settle */ 1568 timeout(fdcpseudointr, fdc, hz / 50); 1569 return (1); /* will return later */ 1570 } 1571 /*FALLTHROUGH*/ 1572 case SEEKCOMPLETE: 1573 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1574 1575 /* Make sure seek really happened. */ 1576 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1577 cyl != bp->b_cylinder * fd->sc_type->step) { 1578 #ifdef FD_DEBUG 1579 if (fdc_debug) 1580 fdcstatus(fdc, "seek failed"); 1581 #endif 1582 fdcretry(fdc); 1583 goto loop; 1584 } 1585 fd->sc_cylin = bp->b_cylinder; 1586 goto doio; 1587 1588 case IOTIMEDOUT: 1589 /* 1590 * Try to abort the I/O operation without resetting 1591 * the chip first. Poke TC and arrange to pick up 1592 * the timed out I/O command's status. 1593 */ 1594 fdc->sc_itask = FDC_ITASK_RESULT; 1595 fdc->sc_state = IOCLEANUPWAIT; 1596 fdc->sc_nstat = 0; 1597 /* 1/10 second should be enough */ 1598 timeout(fdctimeout, fdc, hz/10); 1599 FTC_FLIP; 1600 return (1); 1601 1602 case IOCLEANUPTIMEDOUT: 1603 case SEEKTIMEDOUT: 1604 case RECALTIMEDOUT: 1605 case RESETTIMEDOUT: 1606 fdcstatus(fdc, "timeout"); 1607 1608 /* All other timeouts always roll through to a chip reset */ 1609 fdcretry(fdc); 1610 1611 /* Force reset, no matter what fdcretry() says */ 1612 fdc->sc_state = DORESET; 1613 goto loop; 1614 1615 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1616 untimeout(fdctimeout, fdc); 1617 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1618 fdcretry(fdc); 1619 goto loop; 1620 1621 case IOCOMPLETE: /* IO DONE, post-analyze */ 1622 untimeout(fdctimeout, fdc); 1623 1624 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1625 1626 if (fdc->sc_nstat != 7 || st1 != 0 || 1627 ((st0 & 0xf8) != 0 && 1628 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1629 #ifdef FD_DEBUG 1630 if (fdc_debug) { 1631 fdcstatus(fdc, 1632 bp->b_flags & B_READ 1633 ? "read failed" : "write failed"); 1634 printf("blkno %d nblks %d nstat %d tc %d\n", 1635 fd->sc_blkno, fd->sc_nblks, 1636 fdc->sc_nstat, fdc->sc_tc); 1637 } 1638 #endif 1639 if (fdc->sc_nstat == 7 && 1640 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1641 1642 /* 1643 * Silently retry overruns if no other 1644 * error bit is set. Adjust threshold. 1645 */ 1646 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1647 if (thr < 15) { 1648 thr++; 1649 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1650 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1651 #ifdef FD_DEBUG 1652 if (fdc_debug) 1653 printf("fdc: %d -> threshold\n", thr); 1654 #endif 1655 fdconf(fdc); 1656 fdc->sc_overruns = 0; 1657 } 1658 if (++fdc->sc_overruns < 3) { 1659 fdc->sc_state = DOIO; 1660 goto loop; 1661 } 1662 } 1663 fdcretry(fdc); 1664 goto loop; 1665 } 1666 if (fdc->sc_errors) { 1667 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1668 fd->sc_skip / FD_BSIZE(fd), 1669 (struct disklabel *)NULL); 1670 printf("\n"); 1671 fdc->sc_errors = 0; 1672 } else { 1673 if (--fdc->sc_overruns < -20) { 1674 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1675 if (thr > 0) { 1676 thr--; 1677 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1678 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1679 #ifdef FD_DEBUG 1680 if (fdc_debug) 1681 printf("fdc: %d -> threshold\n", thr); 1682 #endif 1683 fdconf(fdc); 1684 } 1685 fdc->sc_overruns = 0; 1686 } 1687 } 1688 fd->sc_blkno += fd->sc_nblks; 1689 fd->sc_skip += fd->sc_nbytes; 1690 fd->sc_bcount -= fd->sc_nbytes; 1691 if (finfo == NULL && fd->sc_bcount > 0) { 1692 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1693 goto doseek; 1694 } 1695 fdfinish(fd, bp); 1696 goto loop; 1697 1698 case DORESET: 1699 /* try a reset, keep motor on */ 1700 fd_set_motor(fdc); 1701 delay(100); 1702 fdc->sc_nstat = 0; 1703 fdc->sc_itask = FDC_ITASK_SENSEI; 1704 fdc->sc_state = RESETCOMPLETE; 1705 timeout(fdctimeout, fdc, hz / 2); 1706 fdc_reset(fdc); 1707 return (1); /* will return later */ 1708 1709 case RESETCOMPLETE: 1710 untimeout(fdctimeout, fdc); 1711 fdconf(fdc); 1712 1713 /* FALLTHROUGH */ 1714 case DORECAL: 1715 fdc->sc_state = RECALWAIT; 1716 fdc->sc_itask = FDC_ITASK_SENSEI; 1717 fdc->sc_nstat = 0; 1718 timeout(fdctimeout, fdc, 5 * hz); 1719 /* recalibrate function */ 1720 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1721 FDC_WRFIFO(fdc, fd->sc_drive); 1722 return (1); /* will return later */ 1723 1724 case RECALWAIT: 1725 untimeout(fdctimeout, fdc); 1726 fdc->sc_state = RECALCOMPLETE; 1727 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1728 /* allow 1/30 second for heads to settle */ 1729 timeout(fdcpseudointr, fdc, hz / 30); 1730 return (1); /* will return later */ 1731 } 1732 1733 case RECALCOMPLETE: 1734 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1735 #ifdef FD_DEBUG 1736 if (fdc_debug) 1737 fdcstatus(fdc, "recalibrate failed"); 1738 #endif 1739 fdcretry(fdc); 1740 goto loop; 1741 } 1742 fd->sc_cylin = 0; 1743 goto doseek; 1744 1745 case MOTORWAIT: 1746 if (fd->sc_flags & FD_MOTOR_WAIT) 1747 return (1); /* time's not up yet */ 1748 goto doseek; 1749 1750 default: 1751 fdcstatus(fdc, "stray interrupt"); 1752 return (1); 1753 } 1754 #ifdef DIAGNOSTIC 1755 panic("fdcintr: impossible"); 1756 #endif 1757 1758 xxx: 1759 /* 1760 * We get here if the chip locks up in FDC_WRFIFO() 1761 * Cancel any operation and schedule a reset 1762 */ 1763 untimeout(fdctimeout, fdc); 1764 fdcretry(fdc); 1765 (fdc)->sc_state = DORESET; 1766 goto loop; 1767 1768 #undef st0 1769 #undef st1 1770 #undef cyl 1771 } 1772 1773 void 1774 fdcretry(fdc) 1775 struct fdc_softc *fdc; 1776 { 1777 struct fd_softc *fd; 1778 struct buf *bp; 1779 1780 fd = fdc->sc_drives.tqh_first; 1781 bp = BUFQ_FIRST(&fd->sc_q); 1782 1783 fdc->sc_overruns = 0; 1784 if (fd->sc_opts & FDOPT_NORETRY) 1785 goto fail; 1786 1787 switch (fdc->sc_errors) { 1788 case 0: 1789 /* try again */ 1790 fdc->sc_state = 1791 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1792 break; 1793 1794 case 1: case 2: case 3: 1795 /* didn't work; try recalibrating */ 1796 fdc->sc_state = DORECAL; 1797 break; 1798 1799 case 4: 1800 if (fdc->sc_nstat == 7 && 1801 fdc->sc_status[0] == 0 && 1802 fdc->sc_status[1] == 0 && 1803 fdc->sc_status[2] == 0) { 1804 /* 1805 * We've retried a few times and we've got 1806 * valid status and all three status bytes 1807 * are zero. Assume this condition is the 1808 * result of no disk loaded into the drive. 1809 */ 1810 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1811 goto failsilent; 1812 } 1813 1814 /* still no go; reset the bastard */ 1815 fdc->sc_state = DORESET; 1816 break; 1817 1818 default: 1819 fail: 1820 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1821 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1822 fd->sc_skip / FD_BSIZE(fd), 1823 (struct disklabel *)NULL); 1824 fdcstatus(fdc, " controller status"); 1825 } 1826 1827 failsilent: 1828 bp->b_flags |= B_ERROR; 1829 bp->b_error = EIO; 1830 fdfinish(fd, bp); 1831 } 1832 fdc->sc_errors++; 1833 } 1834 1835 int 1836 fdsize(dev) 1837 dev_t dev; 1838 { 1839 1840 /* Swapping to floppies would not make sense. */ 1841 return (-1); 1842 } 1843 1844 int 1845 fddump(dev, blkno, va, size) 1846 dev_t dev; 1847 daddr_t blkno; 1848 caddr_t va; 1849 size_t size; 1850 { 1851 1852 /* Not implemented. */ 1853 return (EINVAL); 1854 } 1855 1856 int 1857 fdioctl(dev, cmd, addr, flag, p) 1858 dev_t dev; 1859 u_long cmd; 1860 caddr_t addr; 1861 int flag; 1862 struct proc *p; 1863 { 1864 struct fd_softc *fd; 1865 struct fdc_softc *fdc; 1866 struct fdformat_parms *form_parms; 1867 struct fdformat_cmd *form_cmd; 1868 struct ne7_fd_formb fd_formb; 1869 int il[FD_MAX_NSEC + 1]; 1870 int unit; 1871 int i, j; 1872 int error; 1873 1874 unit = FDUNIT(dev); 1875 if (unit >= fd_cd.cd_ndevs) 1876 return (ENXIO); 1877 1878 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1879 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1880 1881 switch (cmd) { 1882 case DIOCGDINFO: 1883 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1884 return 0; 1885 1886 case DIOCWLABEL: 1887 if ((flag & FWRITE) == 0) 1888 return EBADF; 1889 /* XXX do something */ 1890 return (0); 1891 1892 case DIOCWDINFO: 1893 if ((flag & FWRITE) == 0) 1894 return (EBADF); 1895 1896 error = setdisklabel(fd->sc_dk.dk_label, 1897 (struct disklabel *)addr, 0, 1898 fd->sc_dk.dk_cpulabel); 1899 if (error) 1900 return (error); 1901 1902 error = writedisklabel(dev, fdstrategy, 1903 fd->sc_dk.dk_label, 1904 fd->sc_dk.dk_cpulabel); 1905 return (error); 1906 1907 case DIOCLOCK: 1908 /* 1909 * Nothing to do here, really. 1910 */ 1911 return (0); 1912 1913 case DIOCEJECT: 1914 if (*(int *)addr == 0) { 1915 int part = DISKPART(dev); 1916 /* 1917 * Don't force eject: check that we are the only 1918 * partition open. If so, unlock it. 1919 */ 1920 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1921 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1922 fd->sc_dk.dk_openmask) { 1923 return (EBUSY); 1924 } 1925 } 1926 /* FALLTHROUGH */ 1927 case ODIOCEJECT: 1928 fd_do_eject(fd); 1929 return (0); 1930 1931 case FDIOCGETFORMAT: 1932 form_parms = (struct fdformat_parms *)addr; 1933 form_parms->fdformat_version = FDFORMAT_VERSION; 1934 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1935 form_parms->ncyl = fd->sc_type->cylinders; 1936 form_parms->nspt = fd->sc_type->sectrac; 1937 form_parms->ntrk = fd->sc_type->heads; 1938 form_parms->stepspercyl = fd->sc_type->step; 1939 form_parms->gaplen = fd->sc_type->gap2; 1940 form_parms->fillbyte = fd->sc_type->fillbyte; 1941 form_parms->interleave = fd->sc_type->interleave; 1942 switch (fd->sc_type->rate) { 1943 case FDC_500KBPS: 1944 form_parms->xfer_rate = 500 * 1024; 1945 break; 1946 case FDC_300KBPS: 1947 form_parms->xfer_rate = 300 * 1024; 1948 break; 1949 case FDC_250KBPS: 1950 form_parms->xfer_rate = 250 * 1024; 1951 break; 1952 default: 1953 return (EINVAL); 1954 } 1955 return (0); 1956 1957 case FDIOCSETFORMAT: 1958 if ((flag & FWRITE) == 0) 1959 return (EBADF); /* must be opened for writing */ 1960 1961 form_parms = (struct fdformat_parms *)addr; 1962 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1963 return (EINVAL);/* wrong version of formatting prog */ 1964 1965 i = form_parms->nbps >> 7; 1966 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1967 i & ~(1 << (ffs(i)-1))) 1968 /* not a power-of-two multiple of 128 */ 1969 return (EINVAL); 1970 1971 switch (form_parms->xfer_rate) { 1972 case 500 * 1024: 1973 fd->sc_type->rate = FDC_500KBPS; 1974 break; 1975 case 300 * 1024: 1976 fd->sc_type->rate = FDC_300KBPS; 1977 break; 1978 case 250 * 1024: 1979 fd->sc_type->rate = FDC_250KBPS; 1980 break; 1981 default: 1982 return (EINVAL); 1983 } 1984 1985 if (form_parms->nspt > FD_MAX_NSEC || 1986 form_parms->fillbyte > 0xff || 1987 form_parms->interleave > 0xff) 1988 return EINVAL; 1989 fd->sc_type->sectrac = form_parms->nspt; 1990 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1991 return EINVAL; 1992 fd->sc_type->heads = form_parms->ntrk; 1993 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1994 fd->sc_type->secsize = ffs(i)-1; 1995 fd->sc_type->gap2 = form_parms->gaplen; 1996 fd->sc_type->cylinders = form_parms->ncyl; 1997 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1998 form_parms->nbps / DEV_BSIZE; 1999 fd->sc_type->step = form_parms->stepspercyl; 2000 fd->sc_type->fillbyte = form_parms->fillbyte; 2001 fd->sc_type->interleave = form_parms->interleave; 2002 return (0); 2003 2004 case FDIOCFORMAT_TRACK: 2005 if((flag & FWRITE) == 0) 2006 /* must be opened for writing */ 2007 return (EBADF); 2008 form_cmd = (struct fdformat_cmd *)addr; 2009 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2010 /* wrong version of formatting prog */ 2011 return (EINVAL); 2012 2013 if (form_cmd->head >= fd->sc_type->heads || 2014 form_cmd->cylinder >= fd->sc_type->cylinders) { 2015 return (EINVAL); 2016 } 2017 2018 fd_formb.head = form_cmd->head; 2019 fd_formb.cyl = form_cmd->cylinder; 2020 fd_formb.transfer_rate = fd->sc_type->rate; 2021 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2022 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2023 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2024 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2025 2026 bzero(il, sizeof il); 2027 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2028 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2029 j++; 2030 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2031 j += fd->sc_type->interleave; 2032 } 2033 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2034 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2035 fd_formb.fd_formb_headno(i) = form_cmd->head; 2036 fd_formb.fd_formb_secno(i) = il[i+1]; 2037 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2038 } 2039 2040 return fdformat(dev, &fd_formb, p); 2041 2042 case FDIOCGETOPTS: /* get drive options */ 2043 *(int *)addr = fd->sc_opts; 2044 return (0); 2045 2046 case FDIOCSETOPTS: /* set drive options */ 2047 fd->sc_opts = *(int *)addr; 2048 return (0); 2049 2050 #ifdef DEBUG 2051 case _IO('f', 100): 2052 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2053 fdcresult(fdc); 2054 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2055 for (i = 0; i < fdc->sc_nstat; i++) 2056 printf(" 0x%x", fdc->sc_status[i]); 2057 printf(">\n"); 2058 return (0); 2059 2060 case _IOW('f', 101, int): 2061 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2062 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2063 fdconf(fdc); 2064 return (0); 2065 2066 case _IO('f', 102): 2067 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2068 fdcresult(fdc); 2069 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2070 for (i=0; i< fdc->sc_nstat; i++) 2071 printf(" 0x%x", fdc->sc_status[i]); 2072 printf(">\n"); 2073 return (0); 2074 #endif 2075 default: 2076 return (ENOTTY); 2077 } 2078 2079 #ifdef DIAGNOSTIC 2080 panic("fdioctl: impossible"); 2081 #endif 2082 } 2083 2084 int 2085 fdformat(dev, finfo, p) 2086 dev_t dev; 2087 struct ne7_fd_formb *finfo; 2088 struct proc *p; 2089 { 2090 int rv = 0, s; 2091 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2092 struct fd_type *type = fd->sc_type; 2093 struct buf *bp; 2094 2095 /* set up a buffer header for fdstrategy() */ 2096 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2097 if (bp == 0) 2098 return (ENOBUFS); 2099 2100 PHOLD(p); 2101 bzero((void *)bp, sizeof(struct buf)); 2102 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2103 bp->b_proc = p; 2104 bp->b_dev = dev; 2105 2106 /* 2107 * Calculate a fake blkno, so fdstrategy() would initiate a 2108 * seek to the requested cylinder. 2109 */ 2110 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2111 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2112 / DEV_BSIZE; 2113 2114 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2115 bp->b_data = (caddr_t)finfo; 2116 2117 #ifdef FD_DEBUG 2118 if (fdc_debug) { 2119 int i; 2120 2121 printf("fdformat: blkno 0x%x count %ld\n", 2122 bp->b_blkno, bp->b_bcount); 2123 2124 printf("\tcyl:\t%d\n", finfo->cyl); 2125 printf("\thead:\t%d\n", finfo->head); 2126 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2127 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2128 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2129 printf("\ttrack data:"); 2130 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2131 printf(" [c%d h%d s%d]", 2132 finfo->fd_formb_cylno(i), 2133 finfo->fd_formb_headno(i), 2134 finfo->fd_formb_secno(i) ); 2135 if (finfo->fd_formb_secsize(i) != 2) 2136 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2137 } 2138 printf("\n"); 2139 } 2140 #endif 2141 2142 /* now do the format */ 2143 fdstrategy(bp); 2144 2145 /* ...and wait for it to complete */ 2146 s = splbio(); 2147 while (!(bp->b_flags & B_DONE)) { 2148 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2149 if (rv == EWOULDBLOCK) 2150 break; 2151 } 2152 splx(s); 2153 2154 if (rv == EWOULDBLOCK) { 2155 /* timed out */ 2156 rv = EIO; 2157 biodone(bp); 2158 } 2159 if (bp->b_flags & B_ERROR) { 2160 rv = bp->b_error; 2161 } 2162 PRELE(p); 2163 free(bp, M_TEMP); 2164 return (rv); 2165 } 2166 2167 void 2168 fdgetdisklabel(dev) 2169 dev_t dev; 2170 { 2171 int unit = FDUNIT(dev), i; 2172 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2173 struct disklabel *lp = fd->sc_dk.dk_label; 2174 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2175 2176 bzero(lp, sizeof(struct disklabel)); 2177 bzero(lp, sizeof(struct cpu_disklabel)); 2178 2179 lp->d_type = DTYPE_FLOPPY; 2180 lp->d_secsize = FD_BSIZE(fd); 2181 lp->d_secpercyl = fd->sc_type->seccyl; 2182 lp->d_nsectors = fd->sc_type->sectrac; 2183 lp->d_ncylinders = fd->sc_type->cylinders; 2184 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2185 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2186 lp->d_rpm = 3600; /* XXX like it matters... */ 2187 2188 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2189 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2190 lp->d_interleave = 1; 2191 2192 lp->d_partitions[RAW_PART].p_offset = 0; 2193 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2194 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2195 lp->d_npartitions = RAW_PART + 1; 2196 2197 lp->d_magic = DISKMAGIC; 2198 lp->d_magic2 = DISKMAGIC; 2199 lp->d_checksum = dkcksum(lp); 2200 2201 /* 2202 * Call the generic disklabel extraction routine. If there's 2203 * not a label there, fake it. 2204 */ 2205 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2206 strncpy(lp->d_packname, "default label", 2207 sizeof(lp->d_packname)); 2208 /* 2209 * Reset the partition info; it might have gotten 2210 * trashed in readdisklabel(). 2211 * 2212 * XXX Why do we have to do this? readdisklabel() 2213 * should be safe... 2214 */ 2215 for (i = 0; i < MAXPARTITIONS; ++i) { 2216 lp->d_partitions[i].p_offset = 0; 2217 if (i == RAW_PART) { 2218 lp->d_partitions[i].p_size = 2219 lp->d_secpercyl * lp->d_ncylinders; 2220 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2221 } else { 2222 lp->d_partitions[i].p_size = 0; 2223 lp->d_partitions[i].p_fstype = FS_UNUSED; 2224 } 2225 } 2226 lp->d_npartitions = RAW_PART + 1; 2227 } 2228 } 2229 2230 void 2231 fd_do_eject(fd) 2232 struct fd_softc *fd; 2233 { 2234 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2235 2236 if (CPU_ISSUN4C) { 2237 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2238 delay(10); 2239 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2240 return; 2241 } 2242 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2243 bus_space_tag_t t = fdc->sc_bustag; 2244 bus_space_handle_t h = fdc->sc_handle; 2245 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2246 2247 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2248 delay(10); 2249 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2250 return; 2251 } 2252 } 2253 2254 #ifdef MEMORY_DISK_HOOKS 2255 int fd_read_md_image __P((size_t *, caddr_t *)); 2256 #endif 2257 2258 /* ARGSUSED */ 2259 void 2260 fd_mountroot_hook(dev) 2261 struct device *dev; 2262 { 2263 int c; 2264 2265 fd_do_eject((struct fd_softc *)dev); 2266 printf("Insert filesystem floppy and press return."); 2267 for (;;) { 2268 c = cngetc(); 2269 if ((c == '\r') || (c == '\n')) { 2270 printf("\n"); 2271 break; 2272 } 2273 } 2274 } 2275 2276 #ifdef MEMORY_DISK_HOOKS 2277 2278 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2279 2280 int 2281 fd_read_md_image(sizep, addrp) 2282 size_t *sizep; 2283 caddr_t *addrp; 2284 { 2285 struct buf buf, *bp = &buf; 2286 dev_t dev; 2287 off_t offset; 2288 caddr_t addr; 2289 2290 dev = makedev(54,0); /* XXX */ 2291 2292 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2293 *addrp = addr; 2294 2295 if (fdopen(dev, 0, S_IFCHR, NULL)) 2296 panic("fd: mountroot: fdopen"); 2297 2298 offset = 0; 2299 2300 for (;;) { 2301 bp->b_dev = dev; 2302 bp->b_error = 0; 2303 bp->b_resid = 0; 2304 bp->b_proc = NULL; 2305 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2306 bp->b_blkno = btodb(offset); 2307 bp->b_bcount = DEV_BSIZE; 2308 bp->b_data = addr; 2309 fdstrategy(bp); 2310 while ((bp->b_flags & B_DONE) == 0) { 2311 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2312 } 2313 if (bp->b_error) 2314 panic("fd: mountroot: fdread error %d", bp->b_error); 2315 2316 if (bp->b_resid != 0) 2317 break; 2318 2319 addr += DEV_BSIZE; 2320 offset += DEV_BSIZE; 2321 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2322 break; 2323 } 2324 (void)fdclose(dev, 0, S_IFCHR, NULL); 2325 *sizep = offset; 2326 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2327 return (0); 2328 } 2329 #endif 2330
Indexes created Fri Oct 03 02:09:57 GMT 2025