fd.c revision 1.107
1 /* $NetBSD: fd.c,v 1.107 2003/06/18 08:58:41 drochner Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 41 * Copyright (c) 1995 Paul Kranenburg. 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Don Ahn. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)fd.c 7.4 (Berkeley) 5/25/91 77 */ 78 79 #include "opt_ddb.h" 80 #include "opt_md.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/callout.h> 85 #include <sys/kernel.h> 86 #include <sys/file.h> 87 #include <sys/ioctl.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/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 <uvm/uvm_extern.h> 104 105 #include <machine/autoconf.h> 106 #include <machine/intr.h> 107 108 #include <sparc/sparc/auxreg.h> 109 #include <sparc/dev/fdreg.h> 110 #include <sparc/dev/fdvar.h> 111 112 #define FDUNIT(dev) (minor(dev) / 8) 113 #define FDTYPE(dev) (minor(dev) % 8) 114 115 /* XXX misuse a flag to identify format operation */ 116 #define B_FORMAT B_XXX 117 118 #define FD_DEBUG 119 #ifdef FD_DEBUG 120 int fdc_debug = 0; 121 #endif 122 123 enum fdc_state { 124 DEVIDLE = 0, 125 MOTORWAIT, /* 1 */ 126 DOSEEK, /* 2 */ 127 SEEKWAIT, /* 3 */ 128 SEEKTIMEDOUT, /* 4 */ 129 SEEKCOMPLETE, /* 5 */ 130 DOIO, /* 6 */ 131 IOCOMPLETE, /* 7 */ 132 IOTIMEDOUT, /* 8 */ 133 IOCLEANUPWAIT, /* 9 */ 134 IOCLEANUPTIMEDOUT,/*10 */ 135 DORESET, /* 11 */ 136 RESETCOMPLETE, /* 12 */ 137 RESETTIMEDOUT, /* 13 */ 138 DORECAL, /* 14 */ 139 RECALWAIT, /* 15 */ 140 RECALTIMEDOUT, /* 16 */ 141 RECALCOMPLETE, /* 17 */ 142 }; 143 144 /* software state, per controller */ 145 struct fdc_softc { 146 struct device sc_dev; /* boilerplate */ 147 bus_space_tag_t sc_bustag; 148 149 struct callout sc_timo_ch; /* timeout callout */ 150 struct callout sc_intr_ch; /* pseudo-intr callout */ 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 void *sc_sicookie; /* softintr(9) cookie */ 178 }; 179 180 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 181 182 /* controller driver configuration */ 183 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 184 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 185 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 186 void fdcattach_obio __P((struct device *, struct device *, void *)); 187 188 int fdcattach __P((struct fdc_softc *, int)); 189 190 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 191 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 192 193 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 194 fdcmatch_obio, fdcattach_obio, NULL, NULL); 195 196 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 197 198 /* 199 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 200 * we tell them apart. 201 */ 202 struct fd_type { 203 int sectrac; /* sectors per track */ 204 int heads; /* number of heads */ 205 int seccyl; /* sectors per cylinder */ 206 int secsize; /* size code for sectors */ 207 int datalen; /* data len when secsize = 0 */ 208 int steprate; /* step rate and head unload time */ 209 int gap1; /* gap len between sectors */ 210 int gap2; /* formatting gap */ 211 int cylinders; /* total num of cylinders */ 212 int size; /* size of disk in sectors */ 213 int step; /* steps per cylinder */ 214 int rate; /* transfer speed code */ 215 int fillbyte; /* format fill byte */ 216 int interleave; /* interleave factor (formatting) */ 217 char *name; 218 }; 219 220 /* The order of entries in the following table is important -- BEWARE! */ 221 struct fd_type fd_types[] = { 222 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 223 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 224 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 225 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 226 }; 227 228 /* software state, per disk (with up to 4 disks per ctlr) */ 229 struct fd_softc { 230 struct device sc_dv; /* generic device info */ 231 struct disk sc_dk; /* generic disk info */ 232 233 struct fd_type *sc_deftype; /* default type descriptor */ 234 struct fd_type *sc_type; /* current type descriptor */ 235 236 struct callout sc_motoron_ch; 237 struct callout sc_motoroff_ch; 238 239 daddr_t sc_blkno; /* starting block number */ 240 int sc_bcount; /* byte count left */ 241 int sc_skip; /* bytes already transferred */ 242 int sc_nblks; /* number of blocks currently transferring */ 243 int sc_nbytes; /* number of bytes currently transferring */ 244 245 int sc_drive; /* physical unit number */ 246 int sc_flags; 247 #define FD_OPEN 0x01 /* it's open */ 248 #define FD_MOTOR 0x02 /* motor should be on */ 249 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 250 int sc_cylin; /* where we think the head is */ 251 int sc_opts; /* user-set options */ 252 253 void *sc_sdhook; /* shutdownhook cookie */ 254 255 TAILQ_ENTRY(fd_softc) sc_drivechain; 256 int sc_ops; /* I/O ops since last switch */ 257 struct bufq_state sc_q; /* pending I/O requests */ 258 int sc_active; /* number of active I/O requests */ 259 }; 260 261 /* floppy driver configuration */ 262 int fdmatch __P((struct device *, struct cfdata *, void *)); 263 void fdattach __P((struct device *, struct device *, void *)); 264 265 CFATTACH_DECL(fd, sizeof(struct fd_softc), 266 fdmatch, fdattach, NULL, NULL); 267 268 extern struct cfdriver fd_cd; 269 270 dev_type_open(fdopen); 271 dev_type_close(fdclose); 272 dev_type_read(fdread); 273 dev_type_write(fdwrite); 274 dev_type_ioctl(fdioctl); 275 dev_type_strategy(fdstrategy); 276 277 const struct bdevsw fd_bdevsw = { 278 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 279 }; 280 281 const struct cdevsw fd_cdevsw = { 282 fdopen, fdclose, fdread, fdwrite, fdioctl, 283 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 284 }; 285 286 void fdgetdisklabel __P((dev_t)); 287 int fd_get_parms __P((struct fd_softc *)); 288 void fdstart __P((struct fd_softc *)); 289 int fdprint __P((void *, const char *)); 290 291 struct dkdriver fddkdriver = { fdstrategy }; 292 293 struct fd_type *fd_nvtotype __P((char *, int, int)); 294 void fd_set_motor __P((struct fdc_softc *fdc)); 295 void fd_motor_off __P((void *arg)); 296 void fd_motor_on __P((void *arg)); 297 int fdcresult __P((struct fdc_softc *fdc)); 298 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 299 void fdcstart __P((struct fdc_softc *fdc)); 300 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 301 void fdc_reset __P((struct fdc_softc *fdc)); 302 void fdctimeout __P((void *arg)); 303 void fdcpseudointr __P((void *arg)); 304 int fdc_c_hwintr __P((void *)); 305 void fdchwintr __P((void)); 306 void fdcswintr __P((void *)); 307 int fdcstate __P((struct fdc_softc *)); 308 void fdcretry __P((struct fdc_softc *fdc)); 309 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 310 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 311 void fd_do_eject __P((struct fd_softc *)); 312 void fd_mountroot_hook __P((struct device *)); 313 static int fdconf __P((struct fdc_softc *)); 314 static void establish_chip_type __P(( 315 struct fdc_softc *, 316 bus_space_tag_t, 317 bus_addr_t, 318 bus_size_t, 319 bus_space_handle_t)); 320 321 322 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 323 324 int 325 fdcmatch_mainbus(parent, match, aux) 326 struct device *parent; 327 struct cfdata *match; 328 void *aux; 329 { 330 struct mainbus_attach_args *ma = aux; 331 332 /* 333 * Floppy controller is on mainbus on sun4c. 334 */ 335 if (!CPU_ISSUN4C) 336 return (0); 337 338 /* sun4c PROMs call the controller "fd" */ 339 if (strcmp("fd", ma->ma_name) != 0) 340 return (0); 341 342 return (bus_space_probe(ma->ma_bustag, 343 ma->ma_paddr, 344 1, /* probe size */ 345 0, /* offset */ 346 0, /* flags */ 347 NULL, NULL)); 348 } 349 350 int 351 fdcmatch_obio(parent, match, aux) 352 struct device *parent; 353 struct cfdata *match; 354 void *aux; 355 { 356 union obio_attach_args *uoba = aux; 357 struct sbus_attach_args *sa; 358 359 /* 360 * Floppy controller is on obio on sun4m. 361 */ 362 if (uoba->uoba_isobio4 != 0) 363 return (0); 364 365 sa = &uoba->uoba_sbus; 366 367 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 368 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 369 return (0); 370 371 return (bus_space_probe(sa->sa_bustag, 372 sbus_bus_addr(sa->sa_bustag, 373 sa->sa_slot, sa->sa_offset), 374 1, /* probe size */ 375 0, /* offset */ 376 0, /* flags */ 377 NULL, NULL)); 378 } 379 380 static void 381 establish_chip_type(fdc, tag, addr, size, handle) 382 struct fdc_softc *fdc; 383 bus_space_tag_t tag; 384 bus_addr_t addr; 385 bus_size_t size; 386 bus_space_handle_t handle; 387 { 388 u_int8_t v; 389 390 /* 391 * This hack from Chris Torek: apparently DOR really 392 * addresses MSR/DRS on a 82072. 393 * We used to rely on the VERSION command to tell the 394 * difference (which did not work). 395 */ 396 397 /* First, check the size of the register bank */ 398 if (size < 8) 399 /* It isn't a 82077 */ 400 return; 401 402 /* Then probe the DOR register offset */ 403 if (bus_space_probe(tag, addr, 404 1, /* probe size */ 405 FDREG77_DOR, /* offset */ 406 0, /* flags */ 407 NULL, NULL) == 0) { 408 409 /* It isn't a 82077 */ 410 return; 411 } 412 413 v = bus_space_read_1(tag, handle, FDREG77_DOR); 414 if (v == NE7_RQM) { 415 /* 416 * Value in DOR looks like it's really MSR 417 */ 418 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 419 v = bus_space_read_1(tag, handle, FDREG77_DOR); 420 if (v == NE7_RQM) { 421 /* 422 * The value in the DOR didn't stick; 423 * it isn't a 82077 424 */ 425 return; 426 } 427 } 428 429 fdc->sc_flags |= FDC_82077; 430 } 431 432 /* 433 * Arguments passed between fdcattach and fdprobe. 434 */ 435 struct fdc_attach_args { 436 int fa_drive; 437 struct fd_type *fa_deftype; 438 }; 439 440 /* 441 * Print the location of a disk drive (called just before attaching the 442 * the drive). If `fdc' is not NULL, the drive was found but was not 443 * in the system config file; print the drive name as well. 444 * Return QUIET (config_find ignores this if the device was configured) to 445 * avoid printing `fdN not configured' messages. 446 */ 447 int 448 fdprint(aux, fdc) 449 void *aux; 450 const char *fdc; 451 { 452 register struct fdc_attach_args *fa = aux; 453 454 if (!fdc) 455 aprint_normal(" drive %d", fa->fa_drive); 456 return (QUIET); 457 } 458 459 /* 460 * Configure several parameters and features on the FDC. 461 * Return 0 on success. 462 */ 463 static int 464 fdconf(fdc) 465 struct fdc_softc *fdc; 466 { 467 int vroom; 468 469 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 470 return (-1); 471 472 /* 473 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 474 * the PROM thinks is appropriate. 475 */ 476 if ((vroom = fdc->sc_status[7]) == 0) 477 vroom = 0x64; 478 479 /* Configure controller to use FIFO and Implied Seek */ 480 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 481 return (-1); 482 if (fdc_wrfifo(fdc, vroom) != 0) 483 return (-1); 484 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 485 return (-1); 486 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 487 return (-1); 488 /* No result phase for the NE7CMD_CFG command */ 489 490 if ((fdc->sc_flags & FDC_82077) != 0) { 491 /* Lock configuration across soft resets. */ 492 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 493 fdcresult(fdc) != 1) { 494 #ifdef DEBUG 495 printf("fdconf: CFGLOCK failed"); 496 #endif 497 return (-1); 498 } 499 } 500 501 return (0); 502 #if 0 503 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 504 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 505 if (fdc_debug) 506 printf("[version cmd]"); 507 } 508 #endif 509 } 510 511 void 512 fdcattach_mainbus(parent, self, aux) 513 struct device *parent, *self; 514 void *aux; 515 { 516 struct fdc_softc *fdc = (void *)self; 517 struct mainbus_attach_args *ma = aux; 518 519 fdc->sc_bustag = ma->ma_bustag; 520 521 if (bus_space_map( 522 ma->ma_bustag, 523 ma->ma_paddr, 524 ma->ma_size, 525 BUS_SPACE_MAP_LINEAR, 526 &fdc->sc_handle) != 0) { 527 printf("%s: cannot map registers\n", self->dv_xname); 528 return; 529 } 530 531 establish_chip_type(fdc, 532 ma->ma_bustag, 533 ma->ma_paddr, 534 ma->ma_size, 535 fdc->sc_handle); 536 537 if (fdcattach(fdc, ma->ma_pri) != 0) 538 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 539 } 540 541 void 542 fdcattach_obio(parent, self, aux) 543 struct device *parent, *self; 544 void *aux; 545 { 546 struct fdc_softc *fdc = (void *)self; 547 union obio_attach_args *uoba = aux; 548 struct sbus_attach_args *sa = &uoba->uoba_sbus; 549 550 if (sa->sa_nintr == 0) { 551 printf(": no interrupt line configured\n"); 552 return; 553 } 554 555 fdc->sc_bustag = sa->sa_bustag; 556 557 if (sbus_bus_map(sa->sa_bustag, 558 sa->sa_slot, sa->sa_offset, sa->sa_size, 559 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 560 printf("%s: cannot map control registers\n", 561 self->dv_xname); 562 return; 563 } 564 565 establish_chip_type(fdc, 566 sa->sa_bustag, 567 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 568 sa->sa_size, 569 fdc->sc_handle); 570 571 if (strcmp(PROM_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 572 printf(": no drives attached\n"); 573 return; 574 } 575 576 if (fdcattach(fdc, sa->sa_pri) != 0) 577 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 578 } 579 580 int 581 fdcattach(fdc, pri) 582 struct fdc_softc *fdc; 583 int pri; 584 { 585 struct fdc_attach_args fa; 586 int drive_attached; 587 char code; 588 589 callout_init(&fdc->sc_timo_ch); 590 callout_init(&fdc->sc_intr_ch); 591 592 fdc->sc_state = DEVIDLE; 593 fdc->sc_itask = FDC_ITASK_NONE; 594 fdc->sc_istatus = FDC_ISTATUS_NONE; 595 fdc->sc_flags |= FDC_EIS; 596 TAILQ_INIT(&fdc->sc_drives); 597 598 if ((fdc->sc_flags & FDC_82077) != 0) { 599 fdc->sc_reg_msr = FDREG77_MSR; 600 fdc->sc_reg_fifo = FDREG77_FIFO; 601 fdc->sc_reg_dor = FDREG77_DOR; 602 code = '7'; 603 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 604 } else { 605 fdc->sc_reg_msr = FDREG72_MSR; 606 fdc->sc_reg_fifo = FDREG72_FIFO; 607 fdc->sc_reg_dor = 0; 608 code = '2'; 609 } 610 611 /* 612 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 613 * Note: CFG_EFIFO is active-low, initial threshold value: 8 614 */ 615 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 616 if (fdconf(fdc) != 0) { 617 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 618 return (-1); 619 } 620 621 fdciop = &fdc->sc_io; 622 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 623 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 624 printf("\n%s: cannot register interrupt handler\n", 625 fdc->sc_dev.dv_xname); 626 return (-1); 627 } 628 629 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 630 if (fdc->sc_sicookie == NULL) { 631 printf("\n%s: cannot register soft interrupt handler\n", 632 fdc->sc_dev.dv_xname); 633 return (-1); 634 } 635 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 636 637 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 638 fdc->sc_dev.dv_xname, "intr"); 639 640 /* physical limit: four drives per controller. */ 641 drive_attached = 0; 642 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 643 fa.fa_deftype = NULL; /* unknown */ 644 fa.fa_deftype = &fd_types[0]; /* XXX */ 645 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 646 drive_attached = 1; 647 } 648 649 if (drive_attached == 0) { 650 /* XXX - dis-establish interrupts here */ 651 /* return (-1); */ 652 } 653 654 return (0); 655 } 656 657 int 658 fdmatch(parent, match, aux) 659 struct device *parent; 660 struct cfdata *match; 661 void *aux; 662 { 663 struct fdc_softc *fdc = (void *)parent; 664 bus_space_tag_t t = fdc->sc_bustag; 665 bus_space_handle_t h = fdc->sc_handle; 666 struct fdc_attach_args *fa = aux; 667 int drive = fa->fa_drive; 668 int n, ok; 669 670 if (drive > 0) 671 /* XXX - for now, punt on more than one drive */ 672 return (0); 673 674 if ((fdc->sc_flags & FDC_82077) != 0) { 675 /* select drive and turn on motor */ 676 bus_space_write_1(t, h, fdc->sc_reg_dor, 677 drive | FDO_FRST | FDO_MOEN(drive)); 678 /* wait for motor to spin up */ 679 delay(250000); 680 } else { 681 auxregbisc(AUXIO4C_FDS, 0); 682 } 683 fdc->sc_nstat = 0; 684 fdc_wrfifo(fdc, NE7CMD_RECAL); 685 fdc_wrfifo(fdc, drive); 686 687 /* Wait for recalibration to complete */ 688 for (n = 0; n < 10000; n++) { 689 u_int8_t v; 690 691 delay(1000); 692 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 693 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 694 /* wait a bit longer till device *really* is ready */ 695 delay(100000); 696 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 697 break; 698 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 699 /* 700 * Got `invalid command'; we interpret it 701 * to mean that the re-calibrate hasn't in 702 * fact finished yet 703 */ 704 continue; 705 break; 706 } 707 } 708 n = fdc->sc_nstat; 709 #ifdef FD_DEBUG 710 if (fdc_debug) { 711 int i; 712 printf("fdprobe: %d stati:", n); 713 for (i = 0; i < n; i++) 714 printf(" 0x%x", fdc->sc_status[i]); 715 printf("\n"); 716 } 717 #endif 718 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 719 720 /* turn off motor */ 721 if ((fdc->sc_flags & FDC_82077) != 0) { 722 /* deselect drive and turn motor off */ 723 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 724 } else { 725 auxregbisc(0, AUXIO4C_FDS); 726 } 727 728 return (ok); 729 } 730 731 /* 732 * Controller is working, and drive responded. Attach it. 733 */ 734 void 735 fdattach(parent, self, aux) 736 struct device *parent, *self; 737 void *aux; 738 { 739 struct fdc_softc *fdc = (void *)parent; 740 struct fd_softc *fd = (void *)self; 741 struct fdc_attach_args *fa = aux; 742 struct fd_type *type = fa->fa_deftype; 743 int drive = fa->fa_drive; 744 745 callout_init(&fd->sc_motoron_ch); 746 callout_init(&fd->sc_motoroff_ch); 747 748 /* XXX Allow `flags' to override device type? */ 749 750 if (type) 751 printf(": %s %d cyl, %d head, %d sec\n", type->name, 752 type->cylinders, type->heads, type->sectrac); 753 else 754 printf(": density unknown\n"); 755 756 bufq_alloc(&fd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_CYLINDER); 757 fd->sc_cylin = -1; 758 fd->sc_drive = drive; 759 fd->sc_deftype = type; 760 fdc->sc_fd[drive] = fd; 761 762 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 763 fdc_wrfifo(fdc, type->steprate); 764 /* XXX head load time == 6ms */ 765 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 766 767 /* 768 * Initialize and attach the disk structure. 769 */ 770 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 771 fd->sc_dk.dk_driver = &fddkdriver; 772 disk_attach(&fd->sc_dk); 773 774 /* 775 * Establish a mountroot_hook anyway in case we booted 776 * with RB_ASKNAME and get selected as the boot device. 777 */ 778 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 779 780 /* Make sure the drive motor gets turned off at shutdown time. */ 781 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 782 } 783 784 __inline struct fd_type * 785 fd_dev_to_type(fd, dev) 786 struct fd_softc *fd; 787 dev_t dev; 788 { 789 int type = FDTYPE(dev); 790 791 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 792 return (NULL); 793 return (type ? &fd_types[type - 1] : fd->sc_deftype); 794 } 795 796 void 797 fdstrategy(bp) 798 register struct buf *bp; /* IO operation to perform */ 799 { 800 struct fd_softc *fd; 801 int unit = FDUNIT(bp->b_dev); 802 int sz; 803 int s; 804 805 /* Valid unit, controller, and request? */ 806 if (unit >= fd_cd.cd_ndevs || 807 (fd = fd_cd.cd_devs[unit]) == 0 || 808 bp->b_blkno < 0 || 809 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 810 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 811 (bp->b_flags & B_FORMAT) == 0)) { 812 bp->b_error = EINVAL; 813 goto bad; 814 } 815 816 /* If it's a null transfer, return immediately. */ 817 if (bp->b_bcount == 0) 818 goto done; 819 820 sz = howmany(bp->b_bcount, DEV_BSIZE); 821 822 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 823 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 824 - bp->b_blkno; 825 if (sz == 0) { 826 /* If exactly at end of disk, return EOF. */ 827 bp->b_resid = bp->b_bcount; 828 goto done; 829 } 830 if (sz < 0) { 831 /* If past end of disk, return EINVAL. */ 832 bp->b_error = EINVAL; 833 goto bad; 834 } 835 /* Otherwise, truncate request. */ 836 bp->b_bcount = sz << DEV_BSHIFT; 837 } 838 839 bp->b_rawblkno = bp->b_blkno; 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 %lld b_bcount %ld blkno %lld cylin %ld\n", 846 (long long)bp->b_blkno, bp->b_bcount, 847 (long long)fd->sc_blkno, bp->b_cylinder); 848 #endif 849 850 /* Queue transfer on drive, activate drive and controller if idle. */ 851 s = splbio(); 852 BUFQ_PUT(&fd->sc_q, bp); 853 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 854 if (fd->sc_active == 0) 855 fdstart(fd); 856 #ifdef DIAGNOSTIC 857 else { 858 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 859 if (fdc->sc_state == DEVIDLE) { 860 printf("fdstrategy: controller inactive\n"); 861 fdcstart(fdc); 862 } 863 } 864 #endif 865 splx(s); 866 return; 867 868 bad: 869 bp->b_flags |= B_ERROR; 870 done: 871 /* Toss transfer; we're done early. */ 872 biodone(bp); 873 } 874 875 void 876 fdstart(fd) 877 struct fd_softc *fd; 878 { 879 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 880 int active = fdc->sc_drives.tqh_first != 0; 881 882 /* Link into controller queue. */ 883 fd->sc_active = 1; 884 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 885 886 /* If controller not already active, start it. */ 887 if (!active) 888 fdcstart(fdc); 889 } 890 891 void 892 fdfinish(fd, bp) 893 struct fd_softc *fd; 894 struct buf *bp; 895 { 896 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 897 898 /* 899 * Move this drive to the end of the queue to give others a `fair' 900 * chance. We only force a switch if N operations are completed while 901 * another drive is waiting to be serviced, since there is a long motor 902 * startup delay whenever we switch. 903 */ 904 (void)BUFQ_GET(&fd->sc_q); 905 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 906 fd->sc_ops = 0; 907 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 908 if (BUFQ_PEEK(&fd->sc_q) != NULL) { 909 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 910 } else 911 fd->sc_active = 0; 912 } 913 bp->b_resid = fd->sc_bcount; 914 fd->sc_skip = 0; 915 916 biodone(bp); 917 /* turn off motor 5s from now */ 918 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 919 fdc->sc_state = DEVIDLE; 920 } 921 922 void 923 fdc_reset(fdc) 924 struct fdc_softc *fdc; 925 { 926 bus_space_tag_t t = fdc->sc_bustag; 927 bus_space_handle_t h = fdc->sc_handle; 928 929 if ((fdc->sc_flags & FDC_82077) != 0) { 930 bus_space_write_1(t, h, fdc->sc_reg_dor, 931 FDO_FDMAEN | FDO_MOEN(0)); 932 } 933 934 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 935 delay(10); 936 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 937 938 if ((fdc->sc_flags & FDC_82077) != 0) { 939 bus_space_write_1(t, h, fdc->sc_reg_dor, 940 FDO_FRST | FDO_FDMAEN | FDO_DS); 941 } 942 #ifdef FD_DEBUG 943 if (fdc_debug) 944 printf("fdc reset\n"); 945 #endif 946 } 947 948 void 949 fd_set_motor(fdc) 950 struct fdc_softc *fdc; 951 { 952 struct fd_softc *fd; 953 u_char status; 954 int n; 955 956 if ((fdc->sc_flags & FDC_82077) != 0) { 957 status = FDO_FRST | FDO_FDMAEN; 958 if ((fd = fdc->sc_drives.tqh_first) != NULL) 959 status |= fd->sc_drive; 960 961 for (n = 0; n < 4; n++) 962 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 963 status |= FDO_MOEN(n); 964 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 965 fdc->sc_reg_dor, status); 966 } else { 967 968 for (n = 0; n < 4; n++) { 969 if ((fd = fdc->sc_fd[n]) != NULL && 970 (fd->sc_flags & FD_MOTOR) != 0) { 971 auxregbisc(AUXIO4C_FDS, 0); 972 return; 973 } 974 } 975 auxregbisc(0, AUXIO4C_FDS); 976 } 977 } 978 979 void 980 fd_motor_off(arg) 981 void *arg; 982 { 983 struct fd_softc *fd = arg; 984 int s; 985 986 s = splbio(); 987 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 988 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 989 splx(s); 990 } 991 992 void 993 fd_motor_on(arg) 994 void *arg; 995 { 996 struct fd_softc *fd = arg; 997 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 998 int s; 999 1000 s = splbio(); 1001 fd->sc_flags &= ~FD_MOTOR_WAIT; 1002 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1003 (void) fdcstate(fdc); 1004 splx(s); 1005 } 1006 1007 /* 1008 * Get status bytes off the FDC after a command has finished 1009 * Returns the number of status bytes read; -1 on error. 1010 * The return value is also stored in `sc_nstat'. 1011 */ 1012 int 1013 fdcresult(fdc) 1014 struct fdc_softc *fdc; 1015 { 1016 bus_space_tag_t t = fdc->sc_bustag; 1017 bus_space_handle_t h = fdc->sc_handle; 1018 int j, n = 0; 1019 1020 for (j = 10000; j; j--) { 1021 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1022 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1023 if (v == NE7_RQM) 1024 return (fdc->sc_nstat = n); 1025 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1026 if (n >= sizeof(fdc->sc_status)) { 1027 log(LOG_ERR, "fdcresult: overrun\n"); 1028 return (-1); 1029 } 1030 fdc->sc_status[n++] = 1031 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1032 } else 1033 delay(1); 1034 } 1035 1036 log(LOG_ERR, "fdcresult: timeout\n"); 1037 return (fdc->sc_nstat = -1); 1038 } 1039 1040 /* 1041 * Write a command byte to the FDC. 1042 * Returns 0 on success; -1 on failure (i.e. timeout) 1043 */ 1044 int 1045 fdc_wrfifo(fdc, x) 1046 struct fdc_softc *fdc; 1047 u_int8_t x; 1048 { 1049 bus_space_tag_t t = fdc->sc_bustag; 1050 bus_space_handle_t h = fdc->sc_handle; 1051 int i; 1052 1053 for (i = 100000; i-- > 0;) { 1054 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1055 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1056 /* The chip is ready */ 1057 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1058 return (0); 1059 } 1060 delay(1); 1061 } 1062 return (-1); 1063 } 1064 1065 int 1066 fdopen(dev, flags, fmt, p) 1067 dev_t dev; 1068 int flags, fmt; 1069 struct proc *p; 1070 { 1071 int unit, pmask; 1072 struct fd_softc *fd; 1073 struct fd_type *type; 1074 1075 unit = FDUNIT(dev); 1076 if (unit >= fd_cd.cd_ndevs) 1077 return (ENXIO); 1078 fd = fd_cd.cd_devs[unit]; 1079 if (fd == NULL) 1080 return (ENXIO); 1081 type = fd_dev_to_type(fd, dev); 1082 if (type == NULL) 1083 return (ENXIO); 1084 1085 if ((fd->sc_flags & FD_OPEN) != 0 && 1086 fd->sc_type != type) 1087 return (EBUSY); 1088 1089 fd->sc_type = type; 1090 fd->sc_cylin = -1; 1091 fd->sc_flags |= FD_OPEN; 1092 1093 /* 1094 * Only update the disklabel if we're not open anywhere else. 1095 */ 1096 if (fd->sc_dk.dk_openmask == 0) 1097 fdgetdisklabel(dev); 1098 1099 pmask = (1 << DISKPART(dev)); 1100 1101 switch (fmt) { 1102 case S_IFCHR: 1103 fd->sc_dk.dk_copenmask |= pmask; 1104 break; 1105 1106 case S_IFBLK: 1107 fd->sc_dk.dk_bopenmask |= pmask; 1108 break; 1109 } 1110 fd->sc_dk.dk_openmask = 1111 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1112 1113 return (0); 1114 } 1115 1116 int 1117 fdclose(dev, flags, fmt, p) 1118 dev_t dev; 1119 int flags, fmt; 1120 struct proc *p; 1121 { 1122 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1123 int pmask = (1 << DISKPART(dev)); 1124 1125 fd->sc_flags &= ~FD_OPEN; 1126 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1127 1128 switch (fmt) { 1129 case S_IFCHR: 1130 fd->sc_dk.dk_copenmask &= ~pmask; 1131 break; 1132 1133 case S_IFBLK: 1134 fd->sc_dk.dk_bopenmask &= ~pmask; 1135 break; 1136 } 1137 fd->sc_dk.dk_openmask = 1138 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1139 1140 return (0); 1141 } 1142 1143 int 1144 fdread(dev, uio, flag) 1145 dev_t dev; 1146 struct uio *uio; 1147 int flag; 1148 { 1149 1150 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1151 } 1152 1153 int 1154 fdwrite(dev, uio, flag) 1155 dev_t dev; 1156 struct uio *uio; 1157 int flag; 1158 { 1159 1160 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1161 } 1162 1163 void 1164 fdcstart(fdc) 1165 struct fdc_softc *fdc; 1166 { 1167 1168 #ifdef DIAGNOSTIC 1169 /* only got here if controller's drive queue was inactive; should 1170 be in idle state */ 1171 if (fdc->sc_state != DEVIDLE) { 1172 printf("fdcstart: not idle\n"); 1173 return; 1174 } 1175 #endif 1176 (void) fdcstate(fdc); 1177 } 1178 1179 void 1180 fdcstatus(fdc, s) 1181 struct fdc_softc *fdc; 1182 char *s; 1183 { 1184 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1185 int n; 1186 char bits[64]; 1187 1188 /* Just print last status */ 1189 n = fdc->sc_nstat; 1190 1191 #if 0 1192 /* 1193 * A 82072 seems to return <invalid command> on 1194 * gratuitous Sense Interrupt commands. 1195 */ 1196 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1197 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1198 (void) fdcresult(fdc); 1199 n = 2; 1200 } 1201 #endif 1202 1203 printf("%s: %s: state %d", 1204 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1205 1206 switch (n) { 1207 case 0: 1208 printf("\n"); 1209 break; 1210 case 2: 1211 printf(" (st0 %s cyl %d)\n", 1212 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1213 bits, sizeof(bits)), fdc->sc_status[1]); 1214 break; 1215 case 7: 1216 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1217 NE7_ST0BITS, bits, sizeof(bits))); 1218 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1219 NE7_ST1BITS, bits, sizeof(bits))); 1220 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1221 NE7_ST2BITS, bits, sizeof(bits))); 1222 printf(" cyl %d head %d sec %d)\n", 1223 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1224 break; 1225 #ifdef DIAGNOSTIC 1226 default: 1227 printf(" fdcstatus: weird size: %d\n", n); 1228 break; 1229 #endif 1230 } 1231 } 1232 1233 void 1234 fdctimeout(arg) 1235 void *arg; 1236 { 1237 struct fdc_softc *fdc = arg; 1238 struct fd_softc *fd; 1239 int s; 1240 1241 s = splbio(); 1242 fd = fdc->sc_drives.tqh_first; 1243 if (fd == NULL) { 1244 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1245 fdc->sc_dev.dv_xname, 1246 fdc->sc_state, fdc->sc_istatus); 1247 fdc->sc_state = DEVIDLE; 1248 goto out; 1249 } 1250 1251 if (BUFQ_PEEK(&fd->sc_q) != NULL) 1252 fdc->sc_state++; 1253 else 1254 fdc->sc_state = DEVIDLE; 1255 1256 (void) fdcstate(fdc); 1257 out: 1258 splx(s); 1259 1260 } 1261 1262 void 1263 fdcpseudointr(arg) 1264 void *arg; 1265 { 1266 struct fdc_softc *fdc = arg; 1267 int s; 1268 1269 /* Just ensure it has the right spl. */ 1270 s = splbio(); 1271 (void) fdcstate(fdc); 1272 splx(s); 1273 } 1274 1275 1276 /* 1277 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1278 * handler is available. Unfortunately, we have no reliable way to 1279 * determine that the interrupt really came from the floppy controller; 1280 * just hope that the other devices that share this interrupt level 1281 * can do better.. 1282 */ 1283 int 1284 fdc_c_hwintr(arg) 1285 void *arg; 1286 { 1287 struct fdc_softc *fdc = arg; 1288 bus_space_tag_t t = fdc->sc_bustag; 1289 bus_space_handle_t h = fdc->sc_handle; 1290 1291 switch (fdc->sc_itask) { 1292 case FDC_ITASK_NONE: 1293 return (0); 1294 case FDC_ITASK_SENSEI: 1295 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1296 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1297 else 1298 fdc->sc_istatus = FDC_ISTATUS_DONE; 1299 softintr_schedule(fdc->sc_sicookie); 1300 return (1); 1301 case FDC_ITASK_RESULT: 1302 if (fdcresult(fdc) == -1) 1303 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1304 else 1305 fdc->sc_istatus = FDC_ISTATUS_DONE; 1306 softintr_schedule(fdc->sc_sicookie); 1307 return (1); 1308 case FDC_ITASK_DMA: 1309 /* Proceed with pseudo-DMA below */ 1310 break; 1311 default: 1312 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1313 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1314 softintr_schedule(fdc->sc_sicookie); 1315 return (1); 1316 } 1317 1318 /* 1319 * Pseudo DMA in progress 1320 */ 1321 for (;;) { 1322 u_int8_t msr; 1323 1324 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1325 1326 if ((msr & NE7_RQM) == 0) 1327 /* That's all this round */ 1328 break; 1329 1330 if ((msr & NE7_NDM) == 0) { 1331 fdcresult(fdc); 1332 fdc->sc_istatus = FDC_ISTATUS_DONE; 1333 softintr_schedule(fdc->sc_sicookie); 1334 #ifdef FD_DEBUG 1335 if (fdc_debug > 1) 1336 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1337 #endif 1338 break; 1339 } 1340 1341 /* Another byte can be transferred */ 1342 if ((msr & NE7_DIO) != 0) 1343 *fdc->sc_data = 1344 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1345 else 1346 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1347 *fdc->sc_data); 1348 1349 fdc->sc_data++; 1350 if (--fdc->sc_tc == 0) { 1351 fdc->sc_istatus = FDC_ISTATUS_DONE; 1352 FTC_FLIP; 1353 fdcresult(fdc); 1354 softintr_schedule(fdc->sc_sicookie); 1355 break; 1356 } 1357 } 1358 return (1); 1359 } 1360 1361 void 1362 fdcswintr(arg) 1363 void *arg; 1364 { 1365 struct fdc_softc *fdc = arg; 1366 1367 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1368 /* This (software) interrupt is not for us */ 1369 return; 1370 1371 switch (fdc->sc_istatus) { 1372 case FDC_ISTATUS_ERROR: 1373 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1374 break; 1375 case FDC_ISTATUS_SPURIOUS: 1376 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1377 break; 1378 } 1379 1380 fdcstate(fdc); 1381 return; 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 /* Prevent loop if the reset sequence produces errors */ 1405 if (fdc->sc_state != RESETCOMPLETE && 1406 fdc->sc_state != RECALWAIT && 1407 fdc->sc_state != RECALCOMPLETE) 1408 fdc->sc_state = DORESET; 1409 } 1410 1411 /* Clear I task/status field */ 1412 fdc->sc_istatus = FDC_ISTATUS_NONE; 1413 fdc->sc_itask = FDC_ITASK_NONE; 1414 1415 loop: 1416 /* Is there a drive for the controller to do a transfer with? */ 1417 fd = fdc->sc_drives.tqh_first; 1418 if (fd == NULL) { 1419 fdc->sc_state = DEVIDLE; 1420 return (0); 1421 } 1422 1423 /* Is there a transfer to this drive? If not, deactivate drive. */ 1424 bp = BUFQ_PEEK(&fd->sc_q); 1425 if (bp == NULL) { 1426 fd->sc_ops = 0; 1427 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1428 fd->sc_active = 0; 1429 goto loop; 1430 } 1431 1432 if (bp->b_flags & B_FORMAT) 1433 finfo = (struct ne7_fd_formb *)bp->b_data; 1434 1435 switch (fdc->sc_state) { 1436 case DEVIDLE: 1437 fdc->sc_errors = 0; 1438 fd->sc_skip = 0; 1439 fd->sc_bcount = bp->b_bcount; 1440 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1441 callout_stop(&fd->sc_motoroff_ch); 1442 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1443 fdc->sc_state = MOTORWAIT; 1444 return (1); 1445 } 1446 if ((fd->sc_flags & FD_MOTOR) == 0) { 1447 /* Turn on the motor, being careful about pairing. */ 1448 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1449 if (ofd && ofd->sc_flags & FD_MOTOR) { 1450 callout_stop(&ofd->sc_motoroff_ch); 1451 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1452 } 1453 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1454 fd_set_motor(fdc); 1455 fdc->sc_state = MOTORWAIT; 1456 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1457 /* Allow .25s for motor to stabilize. */ 1458 callout_reset(&fd->sc_motoron_ch, hz / 4, 1459 fd_motor_on, fd); 1460 } else { 1461 fd->sc_flags &= ~FD_MOTOR_WAIT; 1462 goto loop; 1463 } 1464 return (1); 1465 } 1466 /* Make sure the right drive is selected. */ 1467 fd_set_motor(fdc); 1468 1469 /*FALLTHROUGH*/ 1470 case DOSEEK: 1471 doseek: 1472 if ((fdc->sc_flags & FDC_EIS) && 1473 (bp->b_flags & B_FORMAT) == 0) { 1474 fd->sc_cylin = bp->b_cylinder; 1475 /* We use implied seek */ 1476 goto doio; 1477 } 1478 1479 if (fd->sc_cylin == bp->b_cylinder) 1480 goto doio; 1481 1482 fd->sc_cylin = -1; 1483 fdc->sc_state = SEEKWAIT; 1484 fdc->sc_nstat = 0; 1485 1486 fd->sc_dk.dk_seek++; 1487 1488 disk_busy(&fd->sc_dk); 1489 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1490 1491 /* specify command */ 1492 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1493 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1494 /* XXX head load time == 6ms */ 1495 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1496 1497 fdc->sc_itask = FDC_ITASK_SENSEI; 1498 /* seek function */ 1499 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1500 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1501 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1502 return (1); 1503 1504 case DOIO: 1505 doio: 1506 if (finfo != NULL) 1507 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1508 (char *)finfo; 1509 type = fd->sc_type; 1510 sec = fd->sc_blkno % type->seccyl; 1511 nblks = type->seccyl - sec; 1512 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1513 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1514 fd->sc_nblks = nblks; 1515 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1516 head = sec / type->sectrac; 1517 sec -= head * type->sectrac; 1518 #ifdef DIAGNOSTIC 1519 {int block; 1520 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1521 if (block != fd->sc_blkno) { 1522 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1523 #ifdef DDB 1524 Debugger(); 1525 #endif 1526 }} 1527 #endif 1528 read = bp->b_flags & B_READ; 1529 1530 /* Setup for pseudo DMA */ 1531 fdc->sc_data = bp->b_data + fd->sc_skip; 1532 fdc->sc_tc = fd->sc_nbytes; 1533 1534 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1535 fdc->sc_reg_drs, type->rate); 1536 #ifdef FD_DEBUG 1537 if (fdc_debug > 1) 1538 printf("fdcstate: doio: %s drive %d " 1539 "track %d head %d sec %d nblks %d\n", 1540 finfo ? "format" : 1541 (read ? "read" : "write"), 1542 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1543 #endif 1544 fdc->sc_state = IOCOMPLETE; 1545 fdc->sc_itask = FDC_ITASK_DMA; 1546 fdc->sc_nstat = 0; 1547 1548 disk_busy(&fd->sc_dk); 1549 1550 /* allow 3 seconds for operation */ 1551 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1552 1553 if (finfo != NULL) { 1554 /* formatting */ 1555 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1556 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1557 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1558 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1559 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1560 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1561 } else { 1562 if (read) 1563 FDC_WRFIFO(fdc, NE7CMD_READ); 1564 else 1565 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1566 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1567 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1568 FDC_WRFIFO(fdc, head); 1569 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1570 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1571 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1572 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1573 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1574 } 1575 1576 return (1); /* will return later */ 1577 1578 case SEEKWAIT: 1579 callout_stop(&fdc->sc_timo_ch); 1580 fdc->sc_state = SEEKCOMPLETE; 1581 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1582 /* allow 1/50 second for heads to settle */ 1583 callout_reset(&fdc->sc_intr_ch, hz / 50, 1584 fdcpseudointr, fdc); 1585 return (1); /* will return later */ 1586 } 1587 /*FALLTHROUGH*/ 1588 case SEEKCOMPLETE: 1589 /* no data on seek */ 1590 disk_unbusy(&fd->sc_dk, 0, 0); 1591 1592 /* Make sure seek really happened. */ 1593 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1594 cyl != bp->b_cylinder * fd->sc_type->step) { 1595 #ifdef FD_DEBUG 1596 if (fdc_debug) 1597 fdcstatus(fdc, "seek failed"); 1598 #endif 1599 fdcretry(fdc); 1600 goto loop; 1601 } 1602 fd->sc_cylin = bp->b_cylinder; 1603 goto doio; 1604 1605 case IOTIMEDOUT: 1606 /* 1607 * Try to abort the I/O operation without resetting 1608 * the chip first. Poke TC and arrange to pick up 1609 * the timed out I/O command's status. 1610 */ 1611 fdc->sc_itask = FDC_ITASK_RESULT; 1612 fdc->sc_state = IOCLEANUPWAIT; 1613 fdc->sc_nstat = 0; 1614 /* 1/10 second should be enough */ 1615 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1616 FTC_FLIP; 1617 return (1); 1618 1619 case IOCLEANUPTIMEDOUT: 1620 case SEEKTIMEDOUT: 1621 case RECALTIMEDOUT: 1622 case RESETTIMEDOUT: 1623 fdcstatus(fdc, "timeout"); 1624 1625 /* All other timeouts always roll through to a chip reset */ 1626 fdcretry(fdc); 1627 1628 /* Force reset, no matter what fdcretry() says */ 1629 fdc->sc_state = DORESET; 1630 goto loop; 1631 1632 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1633 callout_stop(&fdc->sc_timo_ch); 1634 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1635 (bp->b_flags & B_READ)); 1636 fdcretry(fdc); 1637 goto loop; 1638 1639 case IOCOMPLETE: /* IO DONE, post-analyze */ 1640 callout_stop(&fdc->sc_timo_ch); 1641 1642 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1643 (bp->b_flags & B_READ)); 1644 1645 if (fdc->sc_nstat != 7 || st1 != 0 || 1646 ((st0 & 0xf8) != 0 && 1647 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1648 #ifdef FD_DEBUG 1649 if (fdc_debug) { 1650 fdcstatus(fdc, 1651 bp->b_flags & B_READ 1652 ? "read failed" : "write failed"); 1653 printf("blkno %lld nblks %d nstat %d tc %d\n", 1654 (long long)fd->sc_blkno, fd->sc_nblks, 1655 fdc->sc_nstat, fdc->sc_tc); 1656 } 1657 #endif 1658 if (fdc->sc_nstat == 7 && 1659 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1660 1661 /* 1662 * Silently retry overruns if no other 1663 * error bit is set. Adjust threshold. 1664 */ 1665 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1666 if (thr < 15) { 1667 thr++; 1668 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1669 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1670 #ifdef FD_DEBUG 1671 if (fdc_debug) 1672 printf("fdc: %d -> threshold\n", thr); 1673 #endif 1674 fdconf(fdc); 1675 fdc->sc_overruns = 0; 1676 } 1677 if (++fdc->sc_overruns < 3) { 1678 fdc->sc_state = DOIO; 1679 goto loop; 1680 } 1681 } 1682 fdcretry(fdc); 1683 goto loop; 1684 } 1685 if (fdc->sc_errors) { 1686 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1687 fd->sc_skip / FD_BSIZE(fd), 1688 (struct disklabel *)NULL); 1689 printf("\n"); 1690 fdc->sc_errors = 0; 1691 } else { 1692 if (--fdc->sc_overruns < -20) { 1693 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1694 if (thr > 0) { 1695 thr--; 1696 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1697 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1698 #ifdef FD_DEBUG 1699 if (fdc_debug) 1700 printf("fdc: %d -> threshold\n", thr); 1701 #endif 1702 fdconf(fdc); 1703 } 1704 fdc->sc_overruns = 0; 1705 } 1706 } 1707 fd->sc_blkno += fd->sc_nblks; 1708 fd->sc_skip += fd->sc_nbytes; 1709 fd->sc_bcount -= fd->sc_nbytes; 1710 if (finfo == NULL && fd->sc_bcount > 0) { 1711 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1712 goto doseek; 1713 } 1714 fdfinish(fd, bp); 1715 goto loop; 1716 1717 case DORESET: 1718 /* try a reset, keep motor on */ 1719 fd_set_motor(fdc); 1720 delay(100); 1721 fdc->sc_nstat = 0; 1722 fdc->sc_itask = FDC_ITASK_SENSEI; 1723 fdc->sc_state = RESETCOMPLETE; 1724 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1725 fdc_reset(fdc); 1726 return (1); /* will return later */ 1727 1728 case RESETCOMPLETE: 1729 callout_stop(&fdc->sc_timo_ch); 1730 fdconf(fdc); 1731 1732 /* FALLTHROUGH */ 1733 case DORECAL: 1734 fdc->sc_state = RECALWAIT; 1735 fdc->sc_itask = FDC_ITASK_SENSEI; 1736 fdc->sc_nstat = 0; 1737 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1738 /* recalibrate function */ 1739 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1740 FDC_WRFIFO(fdc, fd->sc_drive); 1741 return (1); /* will return later */ 1742 1743 case RECALWAIT: 1744 callout_stop(&fdc->sc_timo_ch); 1745 fdc->sc_state = RECALCOMPLETE; 1746 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1747 /* allow 1/30 second for heads to settle */ 1748 callout_reset(&fdc->sc_intr_ch, hz / 30, 1749 fdcpseudointr, fdc); 1750 return (1); /* will return later */ 1751 } 1752 1753 case RECALCOMPLETE: 1754 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1755 #ifdef FD_DEBUG 1756 if (fdc_debug) 1757 fdcstatus(fdc, "recalibrate failed"); 1758 #endif 1759 fdcretry(fdc); 1760 goto loop; 1761 } 1762 fd->sc_cylin = 0; 1763 goto doseek; 1764 1765 case MOTORWAIT: 1766 if (fd->sc_flags & FD_MOTOR_WAIT) 1767 return (1); /* time's not up yet */ 1768 goto doseek; 1769 1770 default: 1771 fdcstatus(fdc, "stray interrupt"); 1772 return (1); 1773 } 1774 #ifdef DIAGNOSTIC 1775 panic("fdcintr: impossible"); 1776 #endif 1777 1778 xxx: 1779 /* 1780 * We get here if the chip locks up in FDC_WRFIFO() 1781 * Cancel any operation and schedule a reset 1782 */ 1783 callout_stop(&fdc->sc_timo_ch); 1784 fdcretry(fdc); 1785 (fdc)->sc_state = DORESET; 1786 goto loop; 1787 1788 #undef st0 1789 #undef st1 1790 #undef cyl 1791 } 1792 1793 void 1794 fdcretry(fdc) 1795 struct fdc_softc *fdc; 1796 { 1797 struct fd_softc *fd; 1798 struct buf *bp; 1799 int error = EIO; 1800 1801 fd = fdc->sc_drives.tqh_first; 1802 bp = BUFQ_PEEK(&fd->sc_q); 1803 1804 fdc->sc_overruns = 0; 1805 if (fd->sc_opts & FDOPT_NORETRY) 1806 goto fail; 1807 1808 switch (fdc->sc_errors) { 1809 case 0: 1810 if (fdc->sc_nstat == 7 && 1811 (fdc->sc_status[0] & 0xd8) == 0x40 && 1812 (fdc->sc_status[1] & 0x2) == 0x2) { 1813 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1814 error = EROFS; 1815 goto failsilent; 1816 } 1817 /* try again */ 1818 fdc->sc_state = 1819 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1820 break; 1821 1822 case 1: case 2: case 3: 1823 /* didn't work; try recalibrating */ 1824 fdc->sc_state = DORECAL; 1825 break; 1826 1827 case 4: 1828 if (fdc->sc_nstat == 7 && 1829 fdc->sc_status[0] == 0 && 1830 fdc->sc_status[1] == 0 && 1831 fdc->sc_status[2] == 0) { 1832 /* 1833 * We've retried a few times and we've got 1834 * valid status and all three status bytes 1835 * are zero. Assume this condition is the 1836 * result of no disk loaded into the drive. 1837 */ 1838 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1839 error = ENODEV; 1840 goto failsilent; 1841 } 1842 1843 /* still no go; reset the bastard */ 1844 fdc->sc_state = DORESET; 1845 break; 1846 1847 default: 1848 fail: 1849 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1850 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1851 fd->sc_skip / FD_BSIZE(fd), 1852 (struct disklabel *)NULL); 1853 printf("\n"); 1854 fdcstatus(fdc, "controller status"); 1855 } 1856 1857 failsilent: 1858 bp->b_flags |= B_ERROR; 1859 bp->b_error = error; 1860 fdfinish(fd, bp); 1861 } 1862 fdc->sc_errors++; 1863 } 1864 1865 int 1866 fdioctl(dev, cmd, addr, flag, p) 1867 dev_t dev; 1868 u_long cmd; 1869 caddr_t addr; 1870 int flag; 1871 struct proc *p; 1872 { 1873 struct fd_softc *fd; 1874 struct fdc_softc *fdc; 1875 struct fdformat_parms *form_parms; 1876 struct fdformat_cmd *form_cmd; 1877 struct ne7_fd_formb *fd_formb; 1878 int il[FD_MAX_NSEC + 1]; 1879 int unit; 1880 int i, j; 1881 int error; 1882 1883 unit = FDUNIT(dev); 1884 if (unit >= fd_cd.cd_ndevs) 1885 return (ENXIO); 1886 1887 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1888 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1889 1890 switch (cmd) { 1891 case DIOCGDINFO: 1892 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1893 return 0; 1894 1895 case DIOCWLABEL: 1896 if ((flag & FWRITE) == 0) 1897 return EBADF; 1898 /* XXX do something */ 1899 return (0); 1900 1901 case DIOCWDINFO: 1902 if ((flag & FWRITE) == 0) 1903 return (EBADF); 1904 1905 error = setdisklabel(fd->sc_dk.dk_label, 1906 (struct disklabel *)addr, 0, 1907 fd->sc_dk.dk_cpulabel); 1908 if (error) 1909 return (error); 1910 1911 error = writedisklabel(dev, fdstrategy, 1912 fd->sc_dk.dk_label, 1913 fd->sc_dk.dk_cpulabel); 1914 return (error); 1915 1916 case DIOCLOCK: 1917 /* 1918 * Nothing to do here, really. 1919 */ 1920 return (0); 1921 1922 case DIOCEJECT: 1923 if (*(int *)addr == 0) { 1924 int part = DISKPART(dev); 1925 /* 1926 * Don't force eject: check that we are the only 1927 * partition open. If so, unlock it. 1928 */ 1929 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1930 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1931 fd->sc_dk.dk_openmask) { 1932 return (EBUSY); 1933 } 1934 } 1935 /* FALLTHROUGH */ 1936 case ODIOCEJECT: 1937 fd_do_eject(fd); 1938 return (0); 1939 1940 case FDIOCGETFORMAT: 1941 form_parms = (struct fdformat_parms *)addr; 1942 form_parms->fdformat_version = FDFORMAT_VERSION; 1943 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1944 form_parms->ncyl = fd->sc_type->cylinders; 1945 form_parms->nspt = fd->sc_type->sectrac; 1946 form_parms->ntrk = fd->sc_type->heads; 1947 form_parms->stepspercyl = fd->sc_type->step; 1948 form_parms->gaplen = fd->sc_type->gap2; 1949 form_parms->fillbyte = fd->sc_type->fillbyte; 1950 form_parms->interleave = fd->sc_type->interleave; 1951 switch (fd->sc_type->rate) { 1952 case FDC_500KBPS: 1953 form_parms->xfer_rate = 500 * 1024; 1954 break; 1955 case FDC_300KBPS: 1956 form_parms->xfer_rate = 300 * 1024; 1957 break; 1958 case FDC_250KBPS: 1959 form_parms->xfer_rate = 250 * 1024; 1960 break; 1961 default: 1962 return (EINVAL); 1963 } 1964 return (0); 1965 1966 case FDIOCSETFORMAT: 1967 if ((flag & FWRITE) == 0) 1968 return (EBADF); /* must be opened for writing */ 1969 1970 form_parms = (struct fdformat_parms *)addr; 1971 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1972 return (EINVAL);/* wrong version of formatting prog */ 1973 1974 i = form_parms->nbps >> 7; 1975 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1976 i & ~(1 << (ffs(i)-1))) 1977 /* not a power-of-two multiple of 128 */ 1978 return (EINVAL); 1979 1980 switch (form_parms->xfer_rate) { 1981 case 500 * 1024: 1982 fd->sc_type->rate = FDC_500KBPS; 1983 break; 1984 case 300 * 1024: 1985 fd->sc_type->rate = FDC_300KBPS; 1986 break; 1987 case 250 * 1024: 1988 fd->sc_type->rate = FDC_250KBPS; 1989 break; 1990 default: 1991 return (EINVAL); 1992 } 1993 1994 if (form_parms->nspt > FD_MAX_NSEC || 1995 form_parms->fillbyte > 0xff || 1996 form_parms->interleave > 0xff) 1997 return EINVAL; 1998 fd->sc_type->sectrac = form_parms->nspt; 1999 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2000 return EINVAL; 2001 fd->sc_type->heads = form_parms->ntrk; 2002 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2003 fd->sc_type->secsize = ffs(i)-1; 2004 fd->sc_type->gap2 = form_parms->gaplen; 2005 fd->sc_type->cylinders = form_parms->ncyl; 2006 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2007 form_parms->nbps / DEV_BSIZE; 2008 fd->sc_type->step = form_parms->stepspercyl; 2009 fd->sc_type->fillbyte = form_parms->fillbyte; 2010 fd->sc_type->interleave = form_parms->interleave; 2011 return (0); 2012 2013 case FDIOCFORMAT_TRACK: 2014 if((flag & FWRITE) == 0) 2015 /* must be opened for writing */ 2016 return (EBADF); 2017 form_cmd = (struct fdformat_cmd *)addr; 2018 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2019 /* wrong version of formatting prog */ 2020 return (EINVAL); 2021 2022 if (form_cmd->head >= fd->sc_type->heads || 2023 form_cmd->cylinder >= fd->sc_type->cylinders) { 2024 return (EINVAL); 2025 } 2026 2027 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2028 M_TEMP, M_NOWAIT); 2029 if (fd_formb == 0) 2030 return (ENOMEM); 2031 2032 fd_formb->head = form_cmd->head; 2033 fd_formb->cyl = form_cmd->cylinder; 2034 fd_formb->transfer_rate = fd->sc_type->rate; 2035 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2036 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2037 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2038 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2039 2040 bzero(il, sizeof il); 2041 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2042 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2043 j++; 2044 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2045 j += fd->sc_type->interleave; 2046 } 2047 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2048 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2049 fd_formb->fd_formb_headno(i) = form_cmd->head; 2050 fd_formb->fd_formb_secno(i) = il[i+1]; 2051 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2052 } 2053 2054 error = fdformat(dev, fd_formb, p); 2055 free(fd_formb, M_TEMP); 2056 return error; 2057 2058 case FDIOCGETOPTS: /* get drive options */ 2059 *(int *)addr = fd->sc_opts; 2060 return (0); 2061 2062 case FDIOCSETOPTS: /* set drive options */ 2063 fd->sc_opts = *(int *)addr; 2064 return (0); 2065 2066 #ifdef FD_DEBUG 2067 case _IO('f', 100): 2068 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2069 fdcresult(fdc); 2070 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2071 for (i = 0; i < fdc->sc_nstat; i++) 2072 printf(" 0x%x", fdc->sc_status[i]); 2073 printf(">\n"); 2074 return (0); 2075 2076 case _IOW('f', 101, int): 2077 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2078 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2079 fdconf(fdc); 2080 return (0); 2081 2082 case _IO('f', 102): 2083 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2084 fdcresult(fdc); 2085 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2086 for (i=0; i< fdc->sc_nstat; i++) 2087 printf(" 0x%x", fdc->sc_status[i]); 2088 printf(">\n"); 2089 return (0); 2090 #endif 2091 default: 2092 return (ENOTTY); 2093 } 2094 2095 #ifdef DIAGNOSTIC 2096 panic("fdioctl: impossible"); 2097 #endif 2098 } 2099 2100 int 2101 fdformat(dev, finfo, p) 2102 dev_t dev; 2103 struct ne7_fd_formb *finfo; 2104 struct proc *p; 2105 { 2106 int rv = 0, s; 2107 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2108 struct fd_type *type = fd->sc_type; 2109 struct buf *bp; 2110 2111 /* set up a buffer header for fdstrategy() */ 2112 s = splbio(); 2113 bp = (struct buf *)pool_get(&bufpool, PR_NOWAIT); 2114 splx(s); 2115 if (bp == NULL) 2116 return (ENOBUFS); 2117 2118 memset((void *)bp, 0, sizeof(struct buf)); 2119 BUF_INIT(bp); 2120 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2121 bp->b_proc = p; 2122 bp->b_dev = dev; 2123 2124 /* 2125 * Calculate a fake blkno, so fdstrategy() would initiate a 2126 * seek to the requested cylinder. 2127 */ 2128 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2129 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2130 / DEV_BSIZE; 2131 2132 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2133 bp->b_data = (caddr_t)finfo; 2134 2135 #ifdef FD_DEBUG 2136 if (fdc_debug) { 2137 int i; 2138 2139 printf("fdformat: blkno 0x%llx count %ld\n", 2140 (unsigned long long)bp->b_blkno, bp->b_bcount); 2141 2142 printf("\tcyl:\t%d\n", finfo->cyl); 2143 printf("\thead:\t%d\n", finfo->head); 2144 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2145 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2146 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2147 printf("\ttrack data:"); 2148 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2149 printf(" [c%d h%d s%d]", 2150 finfo->fd_formb_cylno(i), 2151 finfo->fd_formb_headno(i), 2152 finfo->fd_formb_secno(i) ); 2153 if (finfo->fd_formb_secsize(i) != 2) 2154 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2155 } 2156 printf("\n"); 2157 } 2158 #endif 2159 2160 /* now do the format */ 2161 fdstrategy(bp); 2162 2163 /* ...and wait for it to complete */ 2164 rv = biowait(bp); 2165 s = splbio(); 2166 pool_put(&bufpool, bp); 2167 splx(s); 2168 return (rv); 2169 } 2170 2171 void 2172 fdgetdisklabel(dev) 2173 dev_t dev; 2174 { 2175 int unit = FDUNIT(dev), i; 2176 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2177 struct disklabel *lp = fd->sc_dk.dk_label; 2178 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2179 2180 bzero(lp, sizeof(struct disklabel)); 2181 bzero(lp, sizeof(struct cpu_disklabel)); 2182 2183 lp->d_type = DTYPE_FLOPPY; 2184 lp->d_secsize = FD_BSIZE(fd); 2185 lp->d_secpercyl = fd->sc_type->seccyl; 2186 lp->d_nsectors = fd->sc_type->sectrac; 2187 lp->d_ncylinders = fd->sc_type->cylinders; 2188 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2189 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2190 lp->d_rpm = 3600; /* XXX like it matters... */ 2191 2192 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2193 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2194 lp->d_interleave = 1; 2195 2196 lp->d_partitions[RAW_PART].p_offset = 0; 2197 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2198 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2199 lp->d_npartitions = RAW_PART + 1; 2200 2201 lp->d_magic = DISKMAGIC; 2202 lp->d_magic2 = DISKMAGIC; 2203 lp->d_checksum = dkcksum(lp); 2204 2205 /* 2206 * Call the generic disklabel extraction routine. If there's 2207 * not a label there, fake it. 2208 */ 2209 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2210 strncpy(lp->d_packname, "default label", 2211 sizeof(lp->d_packname)); 2212 /* 2213 * Reset the partition info; it might have gotten 2214 * trashed in readdisklabel(). 2215 * 2216 * XXX Why do we have to do this? readdisklabel() 2217 * should be safe... 2218 */ 2219 for (i = 0; i < MAXPARTITIONS; ++i) { 2220 lp->d_partitions[i].p_offset = 0; 2221 if (i == RAW_PART) { 2222 lp->d_partitions[i].p_size = 2223 lp->d_secpercyl * lp->d_ncylinders; 2224 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2225 } else { 2226 lp->d_partitions[i].p_size = 0; 2227 lp->d_partitions[i].p_fstype = FS_UNUSED; 2228 } 2229 } 2230 lp->d_npartitions = RAW_PART + 1; 2231 } 2232 } 2233 2234 void 2235 fd_do_eject(fd) 2236 struct fd_softc *fd; 2237 { 2238 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2239 2240 if (CPU_ISSUN4C) { 2241 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2242 delay(10); 2243 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2244 return; 2245 } 2246 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2247 bus_space_tag_t t = fdc->sc_bustag; 2248 bus_space_handle_t h = fdc->sc_handle; 2249 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2250 2251 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2252 delay(10); 2253 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2254 return; 2255 } 2256 } 2257 2258 #ifdef MEMORY_DISK_HOOKS 2259 int fd_read_md_image __P((size_t *, caddr_t *)); 2260 #endif 2261 2262 /* ARGSUSED */ 2263 void 2264 fd_mountroot_hook(dev) 2265 struct device *dev; 2266 { 2267 int c; 2268 2269 fd_do_eject((struct fd_softc *)dev); 2270 printf("Insert filesystem floppy and press return."); 2271 for (;;) { 2272 c = cngetc(); 2273 if ((c == '\r') || (c == '\n')) { 2274 printf("\n"); 2275 break; 2276 } 2277 } 2278 } 2279 2280 #ifdef MEMORY_DISK_HOOKS 2281 2282 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2283 2284 int 2285 fd_read_md_image(sizep, addrp) 2286 size_t *sizep; 2287 caddr_t *addrp; 2288 { 2289 struct buf buf, *bp = &buf; 2290 dev_t dev; 2291 off_t offset; 2292 caddr_t addr; 2293 2294 dev = makedev(54,0); /* XXX */ 2295 2296 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2297 *addrp = addr; 2298 2299 if (fdopen(dev, 0, S_IFCHR, NULL)) 2300 panic("fd: mountroot: fdopen"); 2301 2302 offset = 0; 2303 2304 for (;;) { 2305 bp->b_dev = dev; 2306 bp->b_error = 0; 2307 bp->b_resid = 0; 2308 bp->b_proc = NULL; 2309 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2310 bp->b_blkno = btodb(offset); 2311 bp->b_bcount = DEV_BSIZE; 2312 bp->b_data = addr; 2313 fdstrategy(bp); 2314 while ((bp->b_flags & B_DONE) == 0) { 2315 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2316 } 2317 if (bp->b_error) 2318 panic("fd: mountroot: fdread error %d", bp->b_error); 2319 2320 if (bp->b_resid != 0) 2321 break; 2322 2323 addr += DEV_BSIZE; 2324 offset += DEV_BSIZE; 2325 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2326 break; 2327 } 2328 (void)fdclose(dev, 0, S_IFCHR, NULL); 2329 *sizep = offset; 2330 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2331 return (0); 2332 } 2333 #endif 2334
Indexes created Fri Oct 03 02:09:57 GMT 2025