fd.c revision 1.87.4.2
1 /* $NetBSD: fd.c,v 1.87.4.2 2001/10/10 11:56:32 fvdl Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 41 * Copyright (c) 1995 Paul Kranenburg. 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Don Ahn. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)fd.c 7.4 (Berkeley) 5/25/91 77 */ 78 79 #include "opt_ddb.h" 80 #include "opt_md.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/callout.h> 85 #include <sys/kernel.h> 86 #include <sys/file.h> 87 #include <sys/ioctl.h> 88 #include <sys/device.h> 89 #include <sys/disklabel.h> 90 #include <sys/dkstat.h> 91 #include <sys/disk.h> 92 #include <sys/fdio.h> 93 #include <sys/buf.h> 94 #include <sys/malloc.h> 95 #include <sys/proc.h> 96 #include <sys/uio.h> 97 #include <sys/stat.h> 98 #include <sys/syslog.h> 99 #include <sys/queue.h> 100 #include <sys/conf.h> 101 #include <sys/vnode.h> 102 103 #include <dev/cons.h> 104 105 #include <uvm/uvm_extern.h> 106 107 #include <machine/autoconf.h> 108 #include <machine/intr.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 callout sc_timo_ch; /* timeout callout */ 153 struct callout sc_intr_ch; /* pseudo-intr callout */ 154 155 struct fd_softc *sc_fd[4]; /* pointers to children */ 156 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 157 enum fdc_state sc_state; 158 int sc_flags; 159 #define FDC_82077 0x01 160 #define FDC_NEEDHEADSETTLE 0x02 161 #define FDC_EIS 0x04 162 #define FDC_NEEDMOTORWAIT 0x08 163 int sc_errors; /* number of retries so far */ 164 int sc_overruns; /* number of DMA overruns */ 165 int sc_cfg; /* current configuration */ 166 struct fdcio sc_io; 167 #define sc_handle sc_io.fdcio_handle 168 #define sc_reg_msr sc_io.fdcio_reg_msr 169 #define sc_reg_fifo sc_io.fdcio_reg_fifo 170 #define sc_reg_dor sc_io.fdcio_reg_dor 171 #define sc_reg_drs sc_io.fdcio_reg_msr 172 #define sc_itask sc_io.fdcio_itask 173 #define sc_istatus sc_io.fdcio_istatus 174 #define sc_data sc_io.fdcio_data 175 #define sc_tc sc_io.fdcio_tc 176 #define sc_nstat sc_io.fdcio_nstat 177 #define sc_status sc_io.fdcio_status 178 #define sc_intrcnt sc_io.fdcio_intrcnt 179 }; 180 181 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 182 183 /* controller driver configuration */ 184 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 185 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 186 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 187 void fdcattach_obio __P((struct device *, struct device *, void *)); 188 189 int fdcattach __P((struct fdc_softc *, int)); 190 191 struct cfattach fdc_mainbus_ca = { 192 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 193 }; 194 struct cfattach fdc_obio_ca = { 195 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 196 }; 197 198 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 199 200 /* 201 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 202 * we tell them apart. 203 */ 204 struct fd_type { 205 int sectrac; /* sectors per track */ 206 int heads; /* number of heads */ 207 int seccyl; /* sectors per cylinder */ 208 int secsize; /* size code for sectors */ 209 int datalen; /* data len when secsize = 0 */ 210 int steprate; /* step rate and head unload time */ 211 int gap1; /* gap len between sectors */ 212 int gap2; /* formatting gap */ 213 int cylinders; /* total num of cylinders */ 214 int size; /* size of disk in sectors */ 215 int step; /* steps per cylinder */ 216 int rate; /* transfer speed code */ 217 int fillbyte; /* format fill byte */ 218 int interleave; /* interleave factor (formatting) */ 219 char *name; 220 }; 221 222 /* The order of entries in the following table is important -- BEWARE! */ 223 struct fd_type fd_types[] = { 224 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 226 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 227 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 228 }; 229 230 /* software state, per disk (with up to 4 disks per ctlr) */ 231 struct fd_softc { 232 struct device sc_dv; /* generic device info */ 233 struct disk sc_dk; /* generic disk info */ 234 235 struct fd_type *sc_deftype; /* default type descriptor */ 236 struct fd_type *sc_type; /* current type descriptor */ 237 238 struct callout sc_motoron_ch; 239 struct callout sc_motoroff_ch; 240 241 daddr_t sc_blkno; /* starting block number */ 242 int sc_bcount; /* byte count left */ 243 int sc_skip; /* bytes already transferred */ 244 int sc_nblks; /* number of blocks currently transferring */ 245 int sc_nbytes; /* number of bytes currently transferring */ 246 247 int sc_drive; /* physical unit number */ 248 int sc_flags; 249 #define FD_OPEN 0x01 /* it's open */ 250 #define FD_MOTOR 0x02 /* motor should be on */ 251 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 252 int sc_cylin; /* where we think the head is */ 253 int sc_opts; /* user-set options */ 254 255 void *sc_sdhook; /* shutdownhook cookie */ 256 257 TAILQ_ENTRY(fd_softc) sc_drivechain; 258 int sc_ops; /* I/O ops since last switch */ 259 struct buf_queue sc_q; /* pending I/O requests */ 260 int sc_active; /* number of active I/O requests */ 261 }; 262 263 /* floppy driver configuration */ 264 int fdmatch __P((struct device *, struct cfdata *, void *)); 265 void fdattach __P((struct device *, struct device *, void *)); 266 267 struct cfattach fd_ca = { 268 sizeof(struct fd_softc), fdmatch, fdattach 269 }; 270 271 extern struct cfdriver fd_cd; 272 273 void fdgetdisklabel __P((struct vnode *)); 274 int fd_get_parms __P((struct fd_softc *)); 275 void fdstrategy __P((struct buf *)); 276 void fdstart __P((struct fd_softc *)); 277 int fdprint __P((void *, const char *)); 278 279 struct dkdriver fddkdriver = { fdstrategy }; 280 281 struct fd_type *fd_nvtotype __P((char *, int, int)); 282 void fd_set_motor __P((struct fdc_softc *fdc)); 283 void fd_motor_off __P((void *arg)); 284 void fd_motor_on __P((void *arg)); 285 int fdcresult __P((struct fdc_softc *fdc)); 286 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 287 void fdcstart __P((struct fdc_softc *fdc)); 288 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 289 void fdc_reset __P((struct fdc_softc *fdc)); 290 void fdctimeout __P((void *arg)); 291 void fdcpseudointr __P((void *arg)); 292 int fdc_c_hwintr __P((void *)); 293 void fdchwintr __P((void)); 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((struct vnode *, 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 #if defined(SUN4M) 318 #define FD_SET_SWINTR do { \ 319 if (CPU_ISSUN4M) \ 320 raise(0, PIL_FDSOFT); \ 321 else \ 322 ienab_bis(IE_L4); \ 323 } while(0) 324 #else 325 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 326 #endif /* defined(SUN4M) */ 327 328 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 329 330 int 331 fdcmatch_mainbus(parent, match, aux) 332 struct device *parent; 333 struct cfdata *match; 334 void *aux; 335 { 336 struct mainbus_attach_args *ma = aux; 337 338 /* 339 * Floppy controller is on mainbus on sun4c. 340 */ 341 if (!CPU_ISSUN4C) 342 return (0); 343 344 /* sun4c PROMs call the controller "fd" */ 345 if (strcmp("fd", ma->ma_name) != 0) 346 return (0); 347 348 return (bus_space_probe(ma->ma_bustag, 349 ma->ma_iospace, 350 ma->ma_paddr, 351 1, /* probe size */ 352 0, /* offset */ 353 0, /* flags */ 354 NULL, NULL)); 355 } 356 357 int 358 fdcmatch_obio(parent, match, aux) 359 struct device *parent; 360 struct cfdata *match; 361 void *aux; 362 { 363 union obio_attach_args *uoba = aux; 364 struct sbus_attach_args *sa; 365 366 /* 367 * Floppy controller is on obio on sun4m. 368 */ 369 if (uoba->uoba_isobio4 != 0) 370 return (0); 371 372 sa = &uoba->uoba_sbus; 373 374 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 375 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 376 return (0); 377 378 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 379 1, /* probe size */ 380 0, /* offset */ 381 0, /* flags */ 382 NULL, NULL)); 383 } 384 385 static void 386 establish_chip_type(fdc, tag, type, addr, size, handle) 387 struct fdc_softc *fdc; 388 bus_space_tag_t tag; 389 bus_type_t type; 390 bus_addr_t addr; 391 bus_size_t size; 392 bus_space_handle_t handle; 393 { 394 u_int8_t v; 395 396 /* 397 * This hack from Chris Torek: apparently DOR really 398 * addresses MSR/DRS on a 82072. 399 * We used to rely on the VERSION command to tell the 400 * difference (which did not work). 401 */ 402 403 /* First, check the size of the register bank */ 404 if (size < 8) 405 /* It isn't a 82077 */ 406 return; 407 408 /* Then probe the DOR register offset */ 409 if (bus_space_probe(tag, type, addr, 410 1, /* probe size */ 411 FDREG77_DOR, /* offset */ 412 0, /* flags */ 413 NULL, NULL) == 0) { 414 415 /* It isn't a 82077 */ 416 return; 417 } 418 419 v = bus_space_read_1(tag, handle, FDREG77_DOR); 420 if (v == NE7_RQM) { 421 /* 422 * Value in DOR looks like it's really MSR 423 */ 424 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 425 v = bus_space_read_1(tag, handle, FDREG77_DOR); 426 if (v == NE7_RQM) { 427 /* 428 * The value in the DOR didn't stick; 429 * it isn't a 82077 430 */ 431 return; 432 } 433 } 434 435 fdc->sc_flags |= FDC_82077; 436 } 437 438 /* 439 * Arguments passed between fdcattach and fdprobe. 440 */ 441 struct fdc_attach_args { 442 int fa_drive; 443 struct fd_type *fa_deftype; 444 }; 445 446 /* 447 * Print the location of a disk drive (called just before attaching the 448 * the drive). If `fdc' is not NULL, the drive was found but was not 449 * in the system config file; print the drive name as well. 450 * Return QUIET (config_find ignores this if the device was configured) to 451 * avoid printing `fdN not configured' messages. 452 */ 453 int 454 fdprint(aux, fdc) 455 void *aux; 456 const char *fdc; 457 { 458 register struct fdc_attach_args *fa = aux; 459 460 if (!fdc) 461 printf(" drive %d", fa->fa_drive); 462 return (QUIET); 463 } 464 465 /* 466 * Configure several parameters and features on the FDC. 467 * Return 0 on success. 468 */ 469 static int 470 fdconf(fdc) 471 struct fdc_softc *fdc; 472 { 473 int vroom; 474 475 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 476 return (-1); 477 478 /* 479 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 480 * the PROM thinks is appropriate. 481 */ 482 if ((vroom = fdc->sc_status[7]) == 0) 483 vroom = 0x64; 484 485 /* Configure controller to use FIFO and Implied Seek */ 486 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 487 return (-1); 488 if (fdc_wrfifo(fdc, vroom) != 0) 489 return (-1); 490 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 491 return (-1); 492 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 493 return (-1); 494 /* No result phase for the NE7CMD_CFG command */ 495 496 if ((fdc->sc_flags & FDC_82077) != 0) { 497 /* Lock configuration across soft resets. */ 498 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 499 fdcresult(fdc) != 1) { 500 #ifdef DEBUG 501 printf("fdconf: CFGLOCK failed"); 502 #endif 503 return (-1); 504 } 505 } 506 507 return (0); 508 #if 0 509 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 510 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 511 if (fdc_debug) 512 printf("[version cmd]"); 513 } 514 #endif 515 } 516 517 void 518 fdcattach_mainbus(parent, self, aux) 519 struct device *parent, *self; 520 void *aux; 521 { 522 struct fdc_softc *fdc = (void *)self; 523 struct mainbus_attach_args *ma = aux; 524 525 fdc->sc_bustag = ma->ma_bustag; 526 527 if (bus_space_map2( 528 ma->ma_bustag, 529 ma->ma_iospace, 530 ma->ma_paddr, 531 ma->ma_size, 532 BUS_SPACE_MAP_LINEAR, 533 0, 534 &fdc->sc_handle) != 0) { 535 printf("%s: cannot map registers\n", self->dv_xname); 536 return; 537 } 538 539 establish_chip_type(fdc, 540 ma->ma_bustag, 541 ma->ma_iospace, 542 ma->ma_paddr, 543 ma->ma_size, 544 fdc->sc_handle); 545 546 if (fdcattach(fdc, ma->ma_pri) != 0) 547 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 548 } 549 550 void 551 fdcattach_obio(parent, self, aux) 552 struct device *parent, *self; 553 void *aux; 554 { 555 struct fdc_softc *fdc = (void *)self; 556 union obio_attach_args *uoba = aux; 557 struct sbus_attach_args *sa = &uoba->uoba_sbus; 558 559 if (sa->sa_nintr == 0) { 560 printf(": no interrupt line configured\n"); 561 return; 562 } 563 564 fdc->sc_bustag = sa->sa_bustag; 565 566 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 567 sa->sa_offset, 568 sa->sa_size, 569 BUS_SPACE_MAP_LINEAR, 570 0, 571 &fdc->sc_handle) != 0) { 572 printf("%s: cannot map control registers\n", 573 self->dv_xname); 574 return; 575 } 576 577 establish_chip_type(fdc, 578 sa->sa_bustag, 579 sa->sa_slot, 580 sa->sa_offset, 581 sa->sa_size, 582 fdc->sc_handle); 583 584 if (strcmp(PROM_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 585 printf(": no drives attached\n"); 586 return; 587 } 588 589 if (fdcattach(fdc, sa->sa_pri) != 0) 590 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 591 } 592 593 int 594 fdcattach(fdc, pri) 595 struct fdc_softc *fdc; 596 int pri; 597 { 598 struct fdc_attach_args fa; 599 int drive_attached; 600 char code; 601 602 callout_init(&fdc->sc_timo_ch); 603 callout_init(&fdc->sc_intr_ch); 604 605 fdc->sc_state = DEVIDLE; 606 fdc->sc_itask = FDC_ITASK_NONE; 607 fdc->sc_istatus = FDC_ISTATUS_NONE; 608 fdc->sc_flags |= FDC_EIS; 609 TAILQ_INIT(&fdc->sc_drives); 610 611 if ((fdc->sc_flags & FDC_82077) != 0) { 612 fdc->sc_reg_msr = FDREG77_MSR; 613 fdc->sc_reg_fifo = FDREG77_FIFO; 614 fdc->sc_reg_dor = FDREG77_DOR; 615 code = '7'; 616 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 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 (-1); 634 } 635 636 fdciop = &fdc->sc_io; 637 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 638 BUS_INTR_ESTABLISH_FASTTRAP, 639 (int (*) __P((void *)))fdchwintr, NULL) == NULL) { 640 641 printf("%s: notice: no fast trap handler slot available\n", 642 fdc->sc_dev.dv_xname); 643 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 0, 644 fdc_c_hwintr, fdc) == NULL) { 645 printf("%s: cannot register interrupt handler\n", 646 fdc->sc_dev.dv_xname); 647 return (-1); 648 } 649 } 650 651 if (bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, IPL_BIO, 652 BUS_INTR_ESTABLISH_SOFTINTR, 653 fdcswintr, fdc) == NULL) { 654 printf("%s: cannot register interrupt handler\n", 655 fdc->sc_dev.dv_xname); 656 return (-1); 657 } 658 659 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 660 fdc->sc_dev.dv_xname, "intr"); 661 662 /* physical limit: four drives per controller. */ 663 drive_attached = 0; 664 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 665 fa.fa_deftype = NULL; /* unknown */ 666 fa.fa_deftype = &fd_types[0]; /* XXX */ 667 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 668 drive_attached = 1; 669 } 670 671 if (drive_attached == 0) { 672 /* XXX - dis-establish interrupts here */ 673 /* return (-1); */ 674 } 675 676 return (0); 677 } 678 679 int 680 fdmatch(parent, match, aux) 681 struct device *parent; 682 struct cfdata *match; 683 void *aux; 684 { 685 struct fdc_softc *fdc = (void *)parent; 686 bus_space_tag_t t = fdc->sc_bustag; 687 bus_space_handle_t h = fdc->sc_handle; 688 struct fdc_attach_args *fa = aux; 689 int drive = fa->fa_drive; 690 int n, ok; 691 692 if (drive > 0) 693 /* XXX - for now, punt on more than one drive */ 694 return (0); 695 696 if ((fdc->sc_flags & FDC_82077) != 0) { 697 /* select drive and turn on motor */ 698 bus_space_write_1(t, h, fdc->sc_reg_dor, 699 drive | FDO_FRST | FDO_MOEN(drive)); 700 /* wait for motor to spin up */ 701 delay(250000); 702 } else { 703 auxregbisc(AUXIO4C_FDS, 0); 704 } 705 fdc->sc_nstat = 0; 706 fdc_wrfifo(fdc, NE7CMD_RECAL); 707 fdc_wrfifo(fdc, drive); 708 709 /* Wait for recalibration to complete */ 710 for (n = 0; n < 10000; n++) { 711 u_int8_t v; 712 713 delay(1000); 714 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 715 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 716 /* wait a bit longer till device *really* is ready */ 717 delay(100000); 718 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 719 break; 720 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 721 /* 722 * Got `invalid command'; we interpret it 723 * to mean that the re-calibrate hasn't in 724 * fact finished yet 725 */ 726 continue; 727 break; 728 } 729 } 730 n = fdc->sc_nstat; 731 #ifdef FD_DEBUG 732 if (fdc_debug) { 733 int i; 734 printf("fdprobe: %d stati:", n); 735 for (i = 0; i < n; i++) 736 printf(" 0x%x", fdc->sc_status[i]); 737 printf("\n"); 738 } 739 #endif 740 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 741 742 /* turn off motor */ 743 if ((fdc->sc_flags & FDC_82077) != 0) { 744 /* deselect drive and turn motor off */ 745 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 746 } else { 747 auxregbisc(0, AUXIO4C_FDS); 748 } 749 750 return (ok); 751 } 752 753 /* 754 * Controller is working, and drive responded. Attach it. 755 */ 756 void 757 fdattach(parent, self, aux) 758 struct device *parent, *self; 759 void *aux; 760 { 761 struct fdc_softc *fdc = (void *)parent; 762 struct fd_softc *fd = (void *)self; 763 struct fdc_attach_args *fa = aux; 764 struct fd_type *type = fa->fa_deftype; 765 int drive = fa->fa_drive; 766 767 callout_init(&fd->sc_motoron_ch); 768 callout_init(&fd->sc_motoroff_ch); 769 770 /* XXX Allow `flags' to override device type? */ 771 772 if (type) 773 printf(": %s %d cyl, %d head, %d sec\n", type->name, 774 type->cylinders, type->heads, type->sectrac); 775 else 776 printf(": density unknown\n"); 777 778 BUFQ_INIT(&fd->sc_q); 779 fd->sc_cylin = -1; 780 fd->sc_drive = drive; 781 fd->sc_deftype = type; 782 fdc->sc_fd[drive] = fd; 783 784 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 785 fdc_wrfifo(fdc, type->steprate); 786 /* XXX head load time == 6ms */ 787 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 788 789 /* 790 * Initialize and attach the disk structure. 791 */ 792 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 793 fd->sc_dk.dk_driver = &fddkdriver; 794 disk_attach(&fd->sc_dk); 795 796 /* 797 * Establish a mountroot_hook anyway in case we booted 798 * with RB_ASKNAME and get selected as the boot device. 799 */ 800 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 801 802 /* Make sure the drive motor gets turned off at shutdown time. */ 803 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 804 } 805 806 __inline struct fd_type * 807 fd_dev_to_type(fd, dev) 808 struct fd_softc *fd; 809 dev_t dev; 810 { 811 int type = FDTYPE(dev); 812 813 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 814 return (NULL); 815 return (type ? &fd_types[type - 1] : fd->sc_deftype); 816 } 817 818 void 819 fdstrategy(bp) 820 register struct buf *bp; /* IO operation to perform */ 821 { 822 struct fd_softc *fd; 823 int sz; 824 int s; 825 826 fd = vdev_privdata(bp->b_devvp); 827 828 /* Valid unit, controller, and request? */ 829 if (fd == NULL || 830 bp->b_blkno < 0 || 831 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 832 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 833 (bp->b_flags & B_FORMAT) == 0)) { 834 bp->b_error = EINVAL; 835 goto bad; 836 } 837 838 /* If it's a null transfer, return immediately. */ 839 if (bp->b_bcount == 0) 840 goto done; 841 842 sz = howmany(bp->b_bcount, DEV_BSIZE); 843 844 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 845 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 846 - bp->b_blkno; 847 if (sz == 0) { 848 /* If exactly at end of disk, return EOF. */ 849 bp->b_resid = bp->b_bcount; 850 goto done; 851 } 852 if (sz < 0) { 853 /* If past end of disk, return EINVAL. */ 854 bp->b_error = EINVAL; 855 goto bad; 856 } 857 /* Otherwise, truncate request. */ 858 bp->b_bcount = sz << DEV_BSHIFT; 859 } 860 861 bp->b_rawblkno = bp->b_blkno; 862 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 863 (FD_BSIZE(fd) * fd->sc_type->seccyl); 864 865 #ifdef FD_DEBUG 866 if (fdc_debug > 1) 867 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 868 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 869 #endif 870 871 /* Queue transfer on drive, activate drive and controller if idle. */ 872 s = splbio(); 873 disksort_cylinder(&fd->sc_q, bp); 874 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 875 if (fd->sc_active == 0) 876 fdstart(fd); 877 #ifdef DIAGNOSTIC 878 else { 879 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 880 if (fdc->sc_state == DEVIDLE) { 881 printf("fdstrategy: controller inactive\n"); 882 fdcstart(fdc); 883 } 884 } 885 #endif 886 splx(s); 887 return; 888 889 bad: 890 bp->b_flags |= B_ERROR; 891 done: 892 /* Toss transfer; we're done early. */ 893 biodone(bp); 894 } 895 896 void 897 fdstart(fd) 898 struct fd_softc *fd; 899 { 900 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 901 int active = fdc->sc_drives.tqh_first != 0; 902 903 /* Link into controller queue. */ 904 fd->sc_active = 1; 905 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 906 907 /* If controller not already active, start it. */ 908 if (!active) 909 fdcstart(fdc); 910 } 911 912 void 913 fdfinish(fd, bp) 914 struct fd_softc *fd; 915 struct buf *bp; 916 { 917 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 918 919 /* 920 * Move this drive to the end of the queue to give others a `fair' 921 * chance. We only force a switch if N operations are completed while 922 * another drive is waiting to be serviced, since there is a long motor 923 * startup delay whenever we switch. 924 */ 925 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 926 fd->sc_ops = 0; 927 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 928 if (BUFQ_NEXT(bp) != NULL) { 929 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 930 } else 931 fd->sc_active = 0; 932 } 933 bp->b_resid = fd->sc_bcount; 934 fd->sc_skip = 0; 935 BUFQ_REMOVE(&fd->sc_q, bp); 936 937 biodone(bp); 938 /* turn off motor 5s from now */ 939 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 940 fdc->sc_state = DEVIDLE; 941 } 942 943 void 944 fdc_reset(fdc) 945 struct fdc_softc *fdc; 946 { 947 bus_space_tag_t t = fdc->sc_bustag; 948 bus_space_handle_t h = fdc->sc_handle; 949 950 if ((fdc->sc_flags & FDC_82077) != 0) { 951 bus_space_write_1(t, h, fdc->sc_reg_dor, 952 FDO_FDMAEN | FDO_MOEN(0)); 953 } 954 955 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 956 delay(10); 957 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 958 959 if ((fdc->sc_flags & FDC_82077) != 0) { 960 bus_space_write_1(t, h, fdc->sc_reg_dor, 961 FDO_FRST | FDO_FDMAEN | FDO_DS); 962 } 963 #ifdef FD_DEBUG 964 if (fdc_debug) 965 printf("fdc reset\n"); 966 #endif 967 } 968 969 void 970 fd_set_motor(fdc) 971 struct fdc_softc *fdc; 972 { 973 struct fd_softc *fd; 974 u_char status; 975 int n; 976 977 if ((fdc->sc_flags & FDC_82077) != 0) { 978 status = FDO_FRST | FDO_FDMAEN; 979 if ((fd = fdc->sc_drives.tqh_first) != NULL) 980 status |= fd->sc_drive; 981 982 for (n = 0; n < 4; n++) 983 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 984 status |= FDO_MOEN(n); 985 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 986 fdc->sc_reg_dor, status); 987 } else { 988 989 for (n = 0; n < 4; n++) { 990 if ((fd = fdc->sc_fd[n]) != NULL && 991 (fd->sc_flags & FD_MOTOR) != 0) { 992 auxregbisc(AUXIO4C_FDS, 0); 993 return; 994 } 995 } 996 auxregbisc(0, AUXIO4C_FDS); 997 } 998 } 999 1000 void 1001 fd_motor_off(arg) 1002 void *arg; 1003 { 1004 struct fd_softc *fd = arg; 1005 int s; 1006 1007 s = splbio(); 1008 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1009 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 1010 splx(s); 1011 } 1012 1013 void 1014 fd_motor_on(arg) 1015 void *arg; 1016 { 1017 struct fd_softc *fd = arg; 1018 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1019 int s; 1020 1021 s = splbio(); 1022 fd->sc_flags &= ~FD_MOTOR_WAIT; 1023 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1024 (void) fdcstate(fdc); 1025 splx(s); 1026 } 1027 1028 /* 1029 * Get status bytes off the FDC after a command has finished 1030 * Returns the number of status bytes read; -1 on error. 1031 * The return value is also stored in `sc_nstat'. 1032 */ 1033 int 1034 fdcresult(fdc) 1035 struct fdc_softc *fdc; 1036 { 1037 bus_space_tag_t t = fdc->sc_bustag; 1038 bus_space_handle_t h = fdc->sc_handle; 1039 int j, n = 0; 1040 1041 for (j = 10000; j; j--) { 1042 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1043 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1044 if (v == NE7_RQM) 1045 return (fdc->sc_nstat = n); 1046 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1047 if (n >= sizeof(fdc->sc_status)) { 1048 log(LOG_ERR, "fdcresult: overrun\n"); 1049 return (-1); 1050 } 1051 fdc->sc_status[n++] = 1052 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1053 } else 1054 delay(1); 1055 } 1056 1057 log(LOG_ERR, "fdcresult: timeout\n"); 1058 return (fdc->sc_nstat = -1); 1059 } 1060 1061 /* 1062 * Write a command byte to the FDC. 1063 * Returns 0 on success; -1 on failure (i.e. timeout) 1064 */ 1065 int 1066 fdc_wrfifo(fdc, x) 1067 struct fdc_softc *fdc; 1068 u_int8_t x; 1069 { 1070 bus_space_tag_t t = fdc->sc_bustag; 1071 bus_space_handle_t h = fdc->sc_handle; 1072 int i; 1073 1074 for (i = 100000; i-- > 0;) { 1075 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1076 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1077 /* The chip is ready */ 1078 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1079 return (0); 1080 } 1081 delay(1); 1082 } 1083 return (-1); 1084 } 1085 1086 int 1087 fdopen(devvp, flags, fmt, p) 1088 struct vnode *devvp; 1089 int flags, fmt; 1090 struct proc *p; 1091 { 1092 dev_t dev; 1093 int unit, pmask; 1094 struct fd_softc *fd; 1095 struct fd_type *type; 1096 1097 dev = vdev_rdev(devvp); 1098 1099 unit = FDUNIT(dev); 1100 if (unit >= fd_cd.cd_ndevs) 1101 return (ENXIO); 1102 fd = fd_cd.cd_devs[unit]; 1103 if (fd == NULL) 1104 return (ENXIO); 1105 type = fd_dev_to_type(fd, dev); 1106 if (type == NULL) 1107 return (ENXIO); 1108 1109 if ((fd->sc_flags & FD_OPEN) != 0 && 1110 fd->sc_type != type) 1111 return (EBUSY); 1112 1113 vdev_setprivdata(devvp, fd); 1114 1115 fd->sc_type = type; 1116 fd->sc_cylin = -1; 1117 fd->sc_flags |= FD_OPEN; 1118 1119 /* 1120 * Only update the disklabel if we're not open anywhere else. 1121 */ 1122 if (fd->sc_dk.dk_openmask == 0) 1123 fdgetdisklabel(devvp); 1124 1125 pmask = (1 << DISKPART(dev)); 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 fdclose(devvp, flags, fmt, p) 1144 struct vnode *devvp; 1145 int flags, fmt; 1146 struct proc *p; 1147 { 1148 struct fd_softc *fd = vdev_privdata(devvp); 1149 int pmask = (1 << DISKPART(vdev_rdev(devvp))); 1150 1151 fd->sc_flags &= ~FD_OPEN; 1152 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1153 1154 switch (fmt) { 1155 case S_IFCHR: 1156 fd->sc_dk.dk_copenmask &= ~pmask; 1157 break; 1158 1159 case S_IFBLK: 1160 fd->sc_dk.dk_bopenmask &= ~pmask; 1161 break; 1162 } 1163 fd->sc_dk.dk_openmask = 1164 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1165 1166 return (0); 1167 } 1168 1169 int 1170 fdread(devvp, uio, flag) 1171 struct vnode *devvp; 1172 struct uio *uio; 1173 int flag; 1174 { 1175 1176 return (physio(fdstrategy, NULL, devvp, B_READ, minphys, uio)); 1177 } 1178 1179 int 1180 fdwrite(devvp, uio, flag) 1181 struct vnode *devvp; 1182 struct uio *uio; 1183 int flag; 1184 { 1185 1186 return (physio(fdstrategy, NULL, devvp, B_WRITE, minphys, uio)); 1187 } 1188 1189 void 1190 fdcstart(fdc) 1191 struct fdc_softc *fdc; 1192 { 1193 1194 #ifdef DIAGNOSTIC 1195 /* only got here if controller's drive queue was inactive; should 1196 be in idle state */ 1197 if (fdc->sc_state != DEVIDLE) { 1198 printf("fdcstart: not idle\n"); 1199 return; 1200 } 1201 #endif 1202 (void) fdcstate(fdc); 1203 } 1204 1205 void 1206 fdcstatus(fdc, s) 1207 struct fdc_softc *fdc; 1208 char *s; 1209 { 1210 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1211 int n; 1212 char bits[64]; 1213 1214 /* Just print last status */ 1215 n = fdc->sc_nstat; 1216 1217 #if 0 1218 /* 1219 * A 82072 seems to return <invalid command> on 1220 * gratuitous Sense Interrupt commands. 1221 */ 1222 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1223 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1224 (void) fdcresult(fdc); 1225 n = 2; 1226 } 1227 #endif 1228 1229 printf("%s: %s: state %d", 1230 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1231 1232 switch (n) { 1233 case 0: 1234 printf("\n"); 1235 break; 1236 case 2: 1237 printf(" (st0 %s cyl %d)\n", 1238 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1239 bits, sizeof(bits)), fdc->sc_status[1]); 1240 break; 1241 case 7: 1242 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1243 NE7_ST0BITS, bits, sizeof(bits))); 1244 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1245 NE7_ST1BITS, bits, sizeof(bits))); 1246 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1247 NE7_ST2BITS, bits, sizeof(bits))); 1248 printf(" cyl %d head %d sec %d)\n", 1249 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1250 break; 1251 #ifdef DIAGNOSTIC 1252 default: 1253 printf(" fdcstatus: weird size: %d\n", n); 1254 break; 1255 #endif 1256 } 1257 } 1258 1259 void 1260 fdctimeout(arg) 1261 void *arg; 1262 { 1263 struct fdc_softc *fdc = arg; 1264 struct fd_softc *fd; 1265 int s; 1266 1267 s = splbio(); 1268 fd = fdc->sc_drives.tqh_first; 1269 if (fd == NULL) { 1270 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1271 fdc->sc_dev.dv_xname, 1272 fdc->sc_state, fdc->sc_istatus); 1273 fdc->sc_state = DEVIDLE; 1274 goto out; 1275 } 1276 1277 if (BUFQ_FIRST(&fd->sc_q) != NULL) 1278 fdc->sc_state++; 1279 else 1280 fdc->sc_state = DEVIDLE; 1281 1282 (void) fdcstate(fdc); 1283 out: 1284 splx(s); 1285 1286 } 1287 1288 void 1289 fdcpseudointr(arg) 1290 void *arg; 1291 { 1292 struct fdc_softc *fdc = arg; 1293 int s; 1294 1295 /* Just ensure it has the right spl. */ 1296 s = splbio(); 1297 (void) fdcstate(fdc); 1298 splx(s); 1299 } 1300 1301 1302 /* 1303 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1304 * handler is available. Unfortunately, we have no reliable way to 1305 * determine that the interrupt really came from the floppy controller; 1306 * just hope that the other devices that share this interrupt level 1307 * can do better.. 1308 */ 1309 int 1310 fdc_c_hwintr(arg) 1311 void *arg; 1312 { 1313 struct fdc_softc *fdc = arg; 1314 bus_space_tag_t t = fdc->sc_bustag; 1315 bus_space_handle_t h = fdc->sc_handle; 1316 1317 switch (fdc->sc_itask) { 1318 case FDC_ITASK_NONE: 1319 return (0); 1320 case FDC_ITASK_SENSEI: 1321 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1322 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1323 else 1324 fdc->sc_istatus = FDC_ISTATUS_DONE; 1325 FD_SET_SWINTR; 1326 return (1); 1327 case FDC_ITASK_DMA: 1328 /* Proceed with pseudo-dma below */ 1329 break; 1330 default: 1331 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1332 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1333 FD_SET_SWINTR; 1334 return (1); 1335 } 1336 1337 /* 1338 * Pseudo DMA in progress 1339 */ 1340 for (;;) { 1341 u_int8_t msr; 1342 1343 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1344 1345 if ((msr & NE7_RQM) == 0) 1346 /* That's all this round */ 1347 break; 1348 1349 if ((msr & NE7_NDM) == 0) { 1350 fdcresult(fdc); 1351 fdc->sc_istatus = FDC_ISTATUS_DONE; 1352 FD_SET_SWINTR; 1353 #ifdef FD_DEBUG 1354 if (fdc_debug > 1) 1355 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1356 #endif 1357 break; 1358 } 1359 1360 /* Another byte can be transferred */ 1361 if ((msr & NE7_DIO) != 0) 1362 *fdc->sc_data = 1363 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1364 else 1365 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1366 *fdc->sc_data); 1367 1368 fdc->sc_data++; 1369 if (--fdc->sc_tc == 0) { 1370 fdc->sc_istatus = FDC_ISTATUS_DONE; 1371 FTC_FLIP; 1372 fdcresult(fdc); 1373 FD_SET_SWINTR; 1374 break; 1375 } 1376 } 1377 return (1); 1378 } 1379 1380 int 1381 fdcswintr(arg) 1382 void *arg; 1383 { 1384 struct fdc_softc *fdc = arg; 1385 int s; 1386 1387 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1388 /* This (software) interrupt is not for us */ 1389 return (0); 1390 1391 switch (fdc->sc_istatus) { 1392 case FDC_ISTATUS_ERROR: 1393 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1394 break; 1395 case FDC_ISTATUS_SPURIOUS: 1396 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1397 break; 1398 } 1399 1400 s = splbio(); 1401 fdcstate(fdc); 1402 splx(s); 1403 return (1); 1404 } 1405 1406 int 1407 fdcstate(fdc) 1408 struct fdc_softc *fdc; 1409 { 1410 #define st0 fdc->sc_status[0] 1411 #define st1 fdc->sc_status[1] 1412 #define cyl fdc->sc_status[1] 1413 #define FDC_WRFIFO(fdc, c) do { \ 1414 if (fdc_wrfifo(fdc, (c))) { \ 1415 goto xxx; \ 1416 } \ 1417 } while(0) 1418 1419 struct fd_softc *fd; 1420 struct buf *bp; 1421 int read, head, sec, nblks; 1422 struct fd_type *type; 1423 struct ne7_fd_formb *finfo = NULL; 1424 1425 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1426 /* Prevent loop if the reset sequence produces errors */ 1427 if (fdc->sc_state != RESETCOMPLETE && 1428 fdc->sc_state != RECALWAIT && 1429 fdc->sc_state != RECALCOMPLETE) 1430 fdc->sc_state = DORESET; 1431 } 1432 1433 /* Clear I task/status field */ 1434 fdc->sc_istatus = FDC_ISTATUS_NONE; 1435 fdc->sc_itask = FDC_ITASK_NONE; 1436 1437 loop: 1438 /* Is there a drive for the controller to do a transfer with? */ 1439 fd = fdc->sc_drives.tqh_first; 1440 if (fd == NULL) { 1441 fdc->sc_state = DEVIDLE; 1442 return (0); 1443 } 1444 1445 /* Is there a transfer to this drive? If not, deactivate drive. */ 1446 bp = BUFQ_FIRST(&fd->sc_q); 1447 if (bp == NULL) { 1448 fd->sc_ops = 0; 1449 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1450 fd->sc_active = 0; 1451 goto loop; 1452 } 1453 1454 if (bp->b_flags & B_FORMAT) 1455 finfo = (struct ne7_fd_formb *)bp->b_data; 1456 1457 switch (fdc->sc_state) { 1458 case DEVIDLE: 1459 fdc->sc_errors = 0; 1460 fd->sc_skip = 0; 1461 fd->sc_bcount = bp->b_bcount; 1462 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1463 callout_stop(&fd->sc_motoroff_ch); 1464 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1465 fdc->sc_state = MOTORWAIT; 1466 return (1); 1467 } 1468 if ((fd->sc_flags & FD_MOTOR) == 0) { 1469 /* Turn on the motor, being careful about pairing. */ 1470 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1471 if (ofd && ofd->sc_flags & FD_MOTOR) { 1472 callout_stop(&ofd->sc_motoroff_ch); 1473 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1474 } 1475 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1476 fd_set_motor(fdc); 1477 fdc->sc_state = MOTORWAIT; 1478 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1479 /* Allow .25s for motor to stabilize. */ 1480 callout_reset(&fd->sc_motoron_ch, hz / 4, 1481 fd_motor_on, fd); 1482 } else { 1483 fd->sc_flags &= ~FD_MOTOR_WAIT; 1484 goto loop; 1485 } 1486 return (1); 1487 } 1488 /* Make sure the right drive is selected. */ 1489 fd_set_motor(fdc); 1490 1491 /*FALLTHROUGH*/ 1492 case DOSEEK: 1493 doseek: 1494 if ((fdc->sc_flags & FDC_EIS) && 1495 (bp->b_flags & B_FORMAT) == 0) { 1496 fd->sc_cylin = bp->b_cylinder; 1497 /* We use implied seek */ 1498 goto doio; 1499 } 1500 1501 if (fd->sc_cylin == bp->b_cylinder) 1502 goto doio; 1503 1504 fd->sc_cylin = -1; 1505 fdc->sc_state = SEEKWAIT; 1506 fdc->sc_nstat = 0; 1507 1508 fd->sc_dk.dk_seek++; 1509 1510 disk_busy(&fd->sc_dk); 1511 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1512 1513 /* specify command */ 1514 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1515 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1516 /* XXX head load time == 6ms */ 1517 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1518 1519 fdc->sc_itask = FDC_ITASK_SENSEI; 1520 /* seek function */ 1521 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1522 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1523 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1524 return (1); 1525 1526 case DOIO: 1527 doio: 1528 if (finfo != NULL) 1529 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1530 (char *)finfo; 1531 type = fd->sc_type; 1532 sec = fd->sc_blkno % type->seccyl; 1533 nblks = type->seccyl - sec; 1534 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1535 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1536 fd->sc_nblks = nblks; 1537 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1538 head = sec / type->sectrac; 1539 sec -= head * type->sectrac; 1540 #ifdef DIAGNOSTIC 1541 {int block; 1542 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1543 if (block != fd->sc_blkno) { 1544 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1545 #ifdef DDB 1546 Debugger(); 1547 #endif 1548 }} 1549 #endif 1550 read = bp->b_flags & B_READ; 1551 1552 /* Setup for pseudo DMA */ 1553 fdc->sc_data = bp->b_data + fd->sc_skip; 1554 fdc->sc_tc = fd->sc_nbytes; 1555 1556 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1557 fdc->sc_reg_drs, type->rate); 1558 #ifdef FD_DEBUG 1559 if (fdc_debug > 1) 1560 printf("fdcstate: doio: %s drive %d " 1561 "track %d head %d sec %d nblks %d\n", 1562 finfo ? "format" : 1563 (read ? "read" : "write"), 1564 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1565 #endif 1566 fdc->sc_state = IOCOMPLETE; 1567 fdc->sc_itask = FDC_ITASK_DMA; 1568 fdc->sc_nstat = 0; 1569 1570 disk_busy(&fd->sc_dk); 1571 1572 /* allow 3 seconds for operation */ 1573 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1574 1575 if (finfo != NULL) { 1576 /* formatting */ 1577 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1578 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1579 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1580 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1581 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1582 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1583 } else { 1584 if (read) 1585 FDC_WRFIFO(fdc, NE7CMD_READ); 1586 else 1587 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1588 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1589 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1590 FDC_WRFIFO(fdc, head); 1591 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1592 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1593 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1594 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1595 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1596 } 1597 1598 return (1); /* will return later */ 1599 1600 case SEEKWAIT: 1601 callout_stop(&fdc->sc_timo_ch); 1602 fdc->sc_state = SEEKCOMPLETE; 1603 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1604 /* allow 1/50 second for heads to settle */ 1605 callout_reset(&fdc->sc_intr_ch, hz / 50, 1606 fdcpseudointr, fdc); 1607 return (1); /* will return later */ 1608 } 1609 /*FALLTHROUGH*/ 1610 case SEEKCOMPLETE: 1611 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1612 1613 /* Make sure seek really happened. */ 1614 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1615 cyl != bp->b_cylinder * fd->sc_type->step) { 1616 #ifdef FD_DEBUG 1617 if (fdc_debug) 1618 fdcstatus(fdc, "seek failed"); 1619 #endif 1620 fdcretry(fdc); 1621 goto loop; 1622 } 1623 fd->sc_cylin = bp->b_cylinder; 1624 goto doio; 1625 1626 case IOTIMEDOUT: 1627 /* 1628 * Try to abort the I/O operation without resetting 1629 * the chip first. Poke TC and arrange to pick up 1630 * the timed out I/O command's status. 1631 */ 1632 fdc->sc_itask = FDC_ITASK_RESULT; 1633 fdc->sc_state = IOCLEANUPWAIT; 1634 fdc->sc_nstat = 0; 1635 /* 1/10 second should be enough */ 1636 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1637 FTC_FLIP; 1638 return (1); 1639 1640 case IOCLEANUPTIMEDOUT: 1641 case SEEKTIMEDOUT: 1642 case RECALTIMEDOUT: 1643 case RESETTIMEDOUT: 1644 fdcstatus(fdc, "timeout"); 1645 1646 /* All other timeouts always roll through to a chip reset */ 1647 fdcretry(fdc); 1648 1649 /* Force reset, no matter what fdcretry() says */ 1650 fdc->sc_state = DORESET; 1651 goto loop; 1652 1653 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1654 callout_stop(&fdc->sc_timo_ch); 1655 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1656 fdcretry(fdc); 1657 goto loop; 1658 1659 case IOCOMPLETE: /* IO DONE, post-analyze */ 1660 callout_stop(&fdc->sc_timo_ch); 1661 1662 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1663 1664 if (fdc->sc_nstat != 7 || st1 != 0 || 1665 ((st0 & 0xf8) != 0 && 1666 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1667 #ifdef FD_DEBUG 1668 if (fdc_debug) { 1669 fdcstatus(fdc, 1670 bp->b_flags & B_READ 1671 ? "read failed" : "write failed"); 1672 printf("blkno %d nblks %d nstat %d tc %d\n", 1673 fd->sc_blkno, fd->sc_nblks, 1674 fdc->sc_nstat, fdc->sc_tc); 1675 } 1676 #endif 1677 if (fdc->sc_nstat == 7 && 1678 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1679 1680 /* 1681 * Silently retry overruns if no other 1682 * error bit is set. Adjust threshold. 1683 */ 1684 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1685 if (thr < 15) { 1686 thr++; 1687 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1688 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1689 #ifdef FD_DEBUG 1690 if (fdc_debug) 1691 printf("fdc: %d -> threshold\n", thr); 1692 #endif 1693 fdconf(fdc); 1694 fdc->sc_overruns = 0; 1695 } 1696 if (++fdc->sc_overruns < 3) { 1697 fdc->sc_state = DOIO; 1698 goto loop; 1699 } 1700 } 1701 fdcretry(fdc); 1702 goto loop; 1703 } 1704 if (fdc->sc_errors) { 1705 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1706 fd->sc_skip / FD_BSIZE(fd), 1707 (struct disklabel *)NULL); 1708 printf("\n"); 1709 fdc->sc_errors = 0; 1710 } else { 1711 if (--fdc->sc_overruns < -20) { 1712 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1713 if (thr > 0) { 1714 thr--; 1715 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1716 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1717 #ifdef FD_DEBUG 1718 if (fdc_debug) 1719 printf("fdc: %d -> threshold\n", thr); 1720 #endif 1721 fdconf(fdc); 1722 } 1723 fdc->sc_overruns = 0; 1724 } 1725 } 1726 fd->sc_blkno += fd->sc_nblks; 1727 fd->sc_skip += fd->sc_nbytes; 1728 fd->sc_bcount -= fd->sc_nbytes; 1729 if (finfo == NULL && fd->sc_bcount > 0) { 1730 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1731 goto doseek; 1732 } 1733 fdfinish(fd, bp); 1734 goto loop; 1735 1736 case DORESET: 1737 /* try a reset, keep motor on */ 1738 fd_set_motor(fdc); 1739 delay(100); 1740 fdc->sc_nstat = 0; 1741 fdc->sc_itask = FDC_ITASK_SENSEI; 1742 fdc->sc_state = RESETCOMPLETE; 1743 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1744 fdc_reset(fdc); 1745 return (1); /* will return later */ 1746 1747 case RESETCOMPLETE: 1748 callout_stop(&fdc->sc_timo_ch); 1749 fdconf(fdc); 1750 1751 /* FALLTHROUGH */ 1752 case DORECAL: 1753 fdc->sc_state = RECALWAIT; 1754 fdc->sc_itask = FDC_ITASK_SENSEI; 1755 fdc->sc_nstat = 0; 1756 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1757 /* recalibrate function */ 1758 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1759 FDC_WRFIFO(fdc, fd->sc_drive); 1760 return (1); /* will return later */ 1761 1762 case RECALWAIT: 1763 callout_stop(&fdc->sc_timo_ch); 1764 fdc->sc_state = RECALCOMPLETE; 1765 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1766 /* allow 1/30 second for heads to settle */ 1767 callout_reset(&fdc->sc_intr_ch, hz / 30, 1768 fdcpseudointr, fdc); 1769 return (1); /* will return later */ 1770 } 1771 1772 case RECALCOMPLETE: 1773 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1774 #ifdef FD_DEBUG 1775 if (fdc_debug) 1776 fdcstatus(fdc, "recalibrate failed"); 1777 #endif 1778 fdcretry(fdc); 1779 goto loop; 1780 } 1781 fd->sc_cylin = 0; 1782 goto doseek; 1783 1784 case MOTORWAIT: 1785 if (fd->sc_flags & FD_MOTOR_WAIT) 1786 return (1); /* time's not up yet */ 1787 goto doseek; 1788 1789 default: 1790 fdcstatus(fdc, "stray interrupt"); 1791 return (1); 1792 } 1793 #ifdef DIAGNOSTIC 1794 panic("fdcintr: impossible"); 1795 #endif 1796 1797 xxx: 1798 /* 1799 * We get here if the chip locks up in FDC_WRFIFO() 1800 * Cancel any operation and schedule a reset 1801 */ 1802 callout_stop(&fdc->sc_timo_ch); 1803 fdcretry(fdc); 1804 (fdc)->sc_state = DORESET; 1805 goto loop; 1806 1807 #undef st0 1808 #undef st1 1809 #undef cyl 1810 } 1811 1812 void 1813 fdcretry(fdc) 1814 struct fdc_softc *fdc; 1815 { 1816 struct fd_softc *fd; 1817 struct buf *bp; 1818 int error = EIO; 1819 1820 fd = fdc->sc_drives.tqh_first; 1821 bp = BUFQ_FIRST(&fd->sc_q); 1822 1823 fdc->sc_overruns = 0; 1824 if (fd->sc_opts & FDOPT_NORETRY) 1825 goto fail; 1826 1827 switch (fdc->sc_errors) { 1828 case 0: 1829 if (fdc->sc_nstat == 7 && 1830 (fdc->sc_status[0] & 0xd8) == 0x40 && 1831 (fdc->sc_status[1] & 0x2) == 0x2) { 1832 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1833 error = EROFS; 1834 goto failsilent; 1835 } 1836 /* try again */ 1837 fdc->sc_state = 1838 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1839 break; 1840 1841 case 1: case 2: case 3: 1842 /* didn't work; try recalibrating */ 1843 fdc->sc_state = DORECAL; 1844 break; 1845 1846 case 4: 1847 if (fdc->sc_nstat == 7 && 1848 fdc->sc_status[0] == 0 && 1849 fdc->sc_status[1] == 0 && 1850 fdc->sc_status[2] == 0) { 1851 /* 1852 * We've retried a few times and we've got 1853 * valid status and all three status bytes 1854 * are zero. Assume this condition is the 1855 * result of no disk loaded into the drive. 1856 */ 1857 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1858 error = ENODEV; 1859 goto failsilent; 1860 } 1861 1862 /* still no go; reset the bastard */ 1863 fdc->sc_state = DORESET; 1864 break; 1865 1866 default: 1867 fail: 1868 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1869 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1870 fd->sc_skip / FD_BSIZE(fd), 1871 (struct disklabel *)NULL); 1872 printf("\n"); 1873 fdcstatus(fdc, "controller status"); 1874 } 1875 1876 failsilent: 1877 bp->b_flags |= B_ERROR; 1878 bp->b_error = error; 1879 fdfinish(fd, bp); 1880 } 1881 fdc->sc_errors++; 1882 } 1883 1884 int 1885 fdsize(dev) 1886 dev_t dev; 1887 { 1888 1889 /* Swapping to floppies would not make sense. */ 1890 return (-1); 1891 } 1892 1893 int 1894 fddump(dev, blkno, va, size) 1895 dev_t dev; 1896 daddr_t blkno; 1897 caddr_t va; 1898 size_t size; 1899 { 1900 1901 /* Not implemented. */ 1902 return (EINVAL); 1903 } 1904 1905 int 1906 fdioctl(devvp, cmd, addr, flag, p) 1907 struct vnode *devvp; 1908 u_long cmd; 1909 caddr_t addr; 1910 int flag; 1911 struct proc *p; 1912 { 1913 struct fd_softc *fd; 1914 struct fdc_softc *fdc; 1915 struct fdformat_parms *form_parms; 1916 struct fdformat_cmd *form_cmd; 1917 struct ne7_fd_formb *fd_formb; 1918 int il[FD_MAX_NSEC + 1]; 1919 int i, j; 1920 int error; 1921 1922 fd = vdev_privdata(devvp); 1923 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1924 1925 switch (cmd) { 1926 case DIOCGDINFO: 1927 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1928 return 0; 1929 1930 case DIOCWLABEL: 1931 if ((flag & FWRITE) == 0) 1932 return EBADF; 1933 /* XXX do something */ 1934 return (0); 1935 1936 case DIOCWDINFO: 1937 if ((flag & FWRITE) == 0) 1938 return (EBADF); 1939 1940 error = setdisklabel(fd->sc_dk.dk_label, 1941 (struct disklabel *)addr, 0, 1942 fd->sc_dk.dk_cpulabel); 1943 if (error) 1944 return (error); 1945 1946 error = writedisklabel(devvp, fdstrategy, 1947 fd->sc_dk.dk_label, 1948 fd->sc_dk.dk_cpulabel); 1949 return (error); 1950 1951 case DIOCLOCK: 1952 /* 1953 * Nothing to do here, really. 1954 */ 1955 return (0); 1956 1957 case DIOCEJECT: 1958 if (*(int *)addr == 0) { 1959 int part = DISKPART(vdev_rdev(devvp)); 1960 /* 1961 * Don't force eject: check that we are the only 1962 * partition open. If so, unlock it. 1963 */ 1964 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1965 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1966 fd->sc_dk.dk_openmask) { 1967 return (EBUSY); 1968 } 1969 } 1970 /* FALLTHROUGH */ 1971 case ODIOCEJECT: 1972 fd_do_eject(fd); 1973 return (0); 1974 1975 case FDIOCGETFORMAT: 1976 form_parms = (struct fdformat_parms *)addr; 1977 form_parms->fdformat_version = FDFORMAT_VERSION; 1978 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1979 form_parms->ncyl = fd->sc_type->cylinders; 1980 form_parms->nspt = fd->sc_type->sectrac; 1981 form_parms->ntrk = fd->sc_type->heads; 1982 form_parms->stepspercyl = fd->sc_type->step; 1983 form_parms->gaplen = fd->sc_type->gap2; 1984 form_parms->fillbyte = fd->sc_type->fillbyte; 1985 form_parms->interleave = fd->sc_type->interleave; 1986 switch (fd->sc_type->rate) { 1987 case FDC_500KBPS: 1988 form_parms->xfer_rate = 500 * 1024; 1989 break; 1990 case FDC_300KBPS: 1991 form_parms->xfer_rate = 300 * 1024; 1992 break; 1993 case FDC_250KBPS: 1994 form_parms->xfer_rate = 250 * 1024; 1995 break; 1996 default: 1997 return (EINVAL); 1998 } 1999 return (0); 2000 2001 case FDIOCSETFORMAT: 2002 if ((flag & FWRITE) == 0) 2003 return (EBADF); /* must be opened for writing */ 2004 2005 form_parms = (struct fdformat_parms *)addr; 2006 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2007 return (EINVAL);/* wrong version of formatting prog */ 2008 2009 i = form_parms->nbps >> 7; 2010 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2011 i & ~(1 << (ffs(i)-1))) 2012 /* not a power-of-two multiple of 128 */ 2013 return (EINVAL); 2014 2015 switch (form_parms->xfer_rate) { 2016 case 500 * 1024: 2017 fd->sc_type->rate = FDC_500KBPS; 2018 break; 2019 case 300 * 1024: 2020 fd->sc_type->rate = FDC_300KBPS; 2021 break; 2022 case 250 * 1024: 2023 fd->sc_type->rate = FDC_250KBPS; 2024 break; 2025 default: 2026 return (EINVAL); 2027 } 2028 2029 if (form_parms->nspt > FD_MAX_NSEC || 2030 form_parms->fillbyte > 0xff || 2031 form_parms->interleave > 0xff) 2032 return EINVAL; 2033 fd->sc_type->sectrac = form_parms->nspt; 2034 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2035 return EINVAL; 2036 fd->sc_type->heads = form_parms->ntrk; 2037 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2038 fd->sc_type->secsize = ffs(i)-1; 2039 fd->sc_type->gap2 = form_parms->gaplen; 2040 fd->sc_type->cylinders = form_parms->ncyl; 2041 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2042 form_parms->nbps / DEV_BSIZE; 2043 fd->sc_type->step = form_parms->stepspercyl; 2044 fd->sc_type->fillbyte = form_parms->fillbyte; 2045 fd->sc_type->interleave = form_parms->interleave; 2046 return (0); 2047 2048 case FDIOCFORMAT_TRACK: 2049 if((flag & FWRITE) == 0) 2050 /* must be opened for writing */ 2051 return (EBADF); 2052 form_cmd = (struct fdformat_cmd *)addr; 2053 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2054 /* wrong version of formatting prog */ 2055 return (EINVAL); 2056 2057 if (form_cmd->head >= fd->sc_type->heads || 2058 form_cmd->cylinder >= fd->sc_type->cylinders) { 2059 return (EINVAL); 2060 } 2061 2062 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2063 M_TEMP, M_NOWAIT); 2064 if (fd_formb == 0) 2065 return (ENOMEM); 2066 2067 fd_formb->head = form_cmd->head; 2068 fd_formb->cyl = form_cmd->cylinder; 2069 fd_formb->transfer_rate = fd->sc_type->rate; 2070 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2071 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2072 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2073 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2074 2075 bzero(il, sizeof il); 2076 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2077 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2078 j++; 2079 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2080 j += fd->sc_type->interleave; 2081 } 2082 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2083 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2084 fd_formb->fd_formb_headno(i) = form_cmd->head; 2085 fd_formb->fd_formb_secno(i) = il[i+1]; 2086 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2087 } 2088 2089 error = fdformat(devvp, fd_formb, p); 2090 free(fd_formb, M_TEMP); 2091 return error; 2092 2093 case FDIOCGETOPTS: /* get drive options */ 2094 *(int *)addr = fd->sc_opts; 2095 return (0); 2096 2097 case FDIOCSETOPTS: /* set drive options */ 2098 fd->sc_opts = *(int *)addr; 2099 return (0); 2100 2101 #ifdef FD_DEBUG 2102 case _IO('f', 100): 2103 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2104 fdcresult(fdc); 2105 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2106 for (i = 0; i < fdc->sc_nstat; i++) 2107 printf(" 0x%x", fdc->sc_status[i]); 2108 printf(">\n"); 2109 return (0); 2110 2111 case _IOW('f', 101, int): 2112 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2113 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2114 fdconf(fdc); 2115 return (0); 2116 2117 case _IO('f', 102): 2118 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2119 fdcresult(fdc); 2120 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2121 for (i=0; i< fdc->sc_nstat; i++) 2122 printf(" 0x%x", fdc->sc_status[i]); 2123 printf(">\n"); 2124 return (0); 2125 #endif 2126 default: 2127 return (ENOTTY); 2128 } 2129 2130 #ifdef DIAGNOSTIC 2131 panic("fdioctl: impossible"); 2132 #endif 2133 } 2134 2135 int 2136 fdformat(devvp, finfo, p) 2137 struct vnode *devvp; 2138 struct ne7_fd_formb *finfo; 2139 struct proc *p; 2140 { 2141 int rv = 0, s; 2142 struct fd_softc *fd = vdev_privdata(devvp); 2143 struct fd_type *type = fd->sc_type; 2144 struct buf *bp; 2145 2146 /* set up a buffer header for fdstrategy() */ 2147 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2148 if (bp == 0) 2149 return (ENOBUFS); 2150 2151 memset((void *)bp, 0, sizeof(struct buf)); 2152 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2153 bp->b_proc = p; 2154 bp->b_devvp = devvp; 2155 2156 /* 2157 * Calculate a fake blkno, so fdstrategy() would initiate a 2158 * seek to the requested cylinder. 2159 */ 2160 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2161 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2162 / DEV_BSIZE; 2163 2164 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2165 bp->b_data = (caddr_t)finfo; 2166 2167 #ifdef FD_DEBUG 2168 if (fdc_debug) { 2169 int i; 2170 2171 printf("fdformat: blkno 0x%x count %ld\n", 2172 bp->b_blkno, bp->b_bcount); 2173 2174 printf("\tcyl:\t%d\n", finfo->cyl); 2175 printf("\thead:\t%d\n", finfo->head); 2176 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2177 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2178 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2179 printf("\ttrack data:"); 2180 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2181 printf(" [c%d h%d s%d]", 2182 finfo->fd_formb_cylno(i), 2183 finfo->fd_formb_headno(i), 2184 finfo->fd_formb_secno(i) ); 2185 if (finfo->fd_formb_secsize(i) != 2) 2186 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2187 } 2188 printf("\n"); 2189 } 2190 #endif 2191 2192 /* now do the format */ 2193 fdstrategy(bp); 2194 2195 /* ...and wait for it to complete */ 2196 s = splbio(); 2197 while (!(bp->b_flags & B_DONE)) { 2198 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2199 if (rv == EWOULDBLOCK) 2200 break; 2201 } 2202 splx(s); 2203 2204 if (rv == EWOULDBLOCK) { 2205 /* timed out */ 2206 rv = EIO; 2207 biodone(bp); 2208 } 2209 if (bp->b_flags & B_ERROR) { 2210 rv = bp->b_error; 2211 } 2212 free(bp, M_TEMP); 2213 return (rv); 2214 } 2215 2216 void 2217 fdgetdisklabel(devvp) 2218 struct vnode *devvp; 2219 { 2220 struct fd_softc *fd = vdev_privdata(devvp); 2221 struct disklabel *lp = fd->sc_dk.dk_label; 2222 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2223 int i; 2224 2225 bzero(lp, sizeof(struct disklabel)); 2226 bzero(lp, sizeof(struct cpu_disklabel)); 2227 2228 lp->d_type = DTYPE_FLOPPY; 2229 lp->d_secsize = FD_BSIZE(fd); 2230 lp->d_secpercyl = fd->sc_type->seccyl; 2231 lp->d_nsectors = fd->sc_type->sectrac; 2232 lp->d_ncylinders = fd->sc_type->cylinders; 2233 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2234 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2235 lp->d_rpm = 3600; /* XXX like it matters... */ 2236 2237 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2238 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2239 lp->d_interleave = 1; 2240 2241 lp->d_partitions[RAW_PART].p_offset = 0; 2242 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2243 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2244 lp->d_npartitions = RAW_PART + 1; 2245 2246 lp->d_magic = DISKMAGIC; 2247 lp->d_magic2 = DISKMAGIC; 2248 lp->d_checksum = dkcksum(lp); 2249 2250 /* 2251 * Call the generic disklabel extraction routine. If there's 2252 * not a label there, fake it. 2253 */ 2254 if (readdisklabel(devvp, fdstrategy, lp, clp) != NULL) { 2255 strncpy(lp->d_packname, "default label", 2256 sizeof(lp->d_packname)); 2257 /* 2258 * Reset the partition info; it might have gotten 2259 * trashed in readdisklabel(). 2260 * 2261 * XXX Why do we have to do this? readdisklabel() 2262 * should be safe... 2263 */ 2264 for (i = 0; i < MAXPARTITIONS; ++i) { 2265 lp->d_partitions[i].p_offset = 0; 2266 if (i == RAW_PART) { 2267 lp->d_partitions[i].p_size = 2268 lp->d_secpercyl * lp->d_ncylinders; 2269 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2270 } else { 2271 lp->d_partitions[i].p_size = 0; 2272 lp->d_partitions[i].p_fstype = FS_UNUSED; 2273 } 2274 } 2275 lp->d_npartitions = RAW_PART + 1; 2276 } 2277 } 2278 2279 void 2280 fd_do_eject(fd) 2281 struct fd_softc *fd; 2282 { 2283 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2284 2285 if (CPU_ISSUN4C) { 2286 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2287 delay(10); 2288 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2289 return; 2290 } 2291 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2292 bus_space_tag_t t = fdc->sc_bustag; 2293 bus_space_handle_t h = fdc->sc_handle; 2294 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2295 2296 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2297 delay(10); 2298 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2299 return; 2300 } 2301 } 2302 2303 #ifdef MEMORY_DISK_HOOKS 2304 int fd_read_md_image __P((size_t *, caddr_t *)); 2305 #endif 2306 2307 /* ARGSUSED */ 2308 void 2309 fd_mountroot_hook(dev) 2310 struct device *dev; 2311 { 2312 int c; 2313 2314 fd_do_eject((struct fd_softc *)dev); 2315 printf("Insert filesystem floppy and press return."); 2316 for (;;) { 2317 c = cngetc(); 2318 if ((c == '\r') || (c == '\n')) { 2319 printf("\n"); 2320 break; 2321 } 2322 } 2323 } 2324 2325 #ifdef MEMORY_DISK_HOOKS 2326 2327 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2328 2329 int 2330 fd_read_md_image(sizep, addrp) 2331 size_t *sizep; 2332 caddr_t *addrp; 2333 { 2334 struct buf buf, *bp = &buf; 2335 off_t offset; 2336 caddr_t addr; 2337 struct vnode *devvp; 2338 2339 if (cdevvp(makedev(54,0), &devvp) != 0) /* XXX */ 2340 panic("can't create md vnode"); 2341 2342 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2343 *addrp = addr; 2344 2345 if (fdopen(devvp, 0, S_IFCHR, NULL)) 2346 panic("fd: mountroot: fdopen"); 2347 2348 offset = 0; 2349 2350 for (;;) { 2351 bp->b_devvp = devvp; 2352 bp->b_error = 0; 2353 bp->b_resid = 0; 2354 bp->b_proc = NULL; 2355 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2356 bp->b_blkno = btodb(offset); 2357 bp->b_bcount = DEV_BSIZE; 2358 bp->b_data = addr; 2359 fdstrategy(bp); 2360 while ((bp->b_flags & B_DONE) == 0) { 2361 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2362 } 2363 if (bp->b_error) 2364 panic("fd: mountroot: fdread error %d", bp->b_error); 2365 2366 if (bp->b_resid != 0) 2367 break; 2368 2369 addr += DEV_BSIZE; 2370 offset += DEV_BSIZE; 2371 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2372 break; 2373 } 2374 (void)fdclose(devvp, 0, S_IFCHR, NULL); 2375 vrele(devvp); 2376 *sizep = offset; 2377 fd_do_eject(fd_cd.cd_devs[0]); 2378 return (0); 2379 } 2380 #endif 2381
Indexes created Fri Oct 03 02:09:57 GMT 2025