fd.c revision 1.74
1 /* $NetBSD: fd.c,v 1.74 2000/01/24 16:52:02 pk Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 41 * Copyright (c) 1995 Paul Kranenburg. 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Don Ahn. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)fd.c 7.4 (Berkeley) 5/25/91 77 */ 78 79 #include "opt_ddb.h" 80 #include "opt_md.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/kernel.h> 85 #include <sys/file.h> 86 #include <sys/ioctl.h> 87 #include <sys/device.h> 88 #include <sys/disklabel.h> 89 #include <sys/dkstat.h> 90 #include <sys/disk.h> 91 #include <sys/fdio.h> 92 #include <sys/buf.h> 93 #include <sys/malloc.h> 94 #include <sys/proc.h> 95 #include <sys/uio.h> 96 #include <sys/stat.h> 97 #include <sys/syslog.h> 98 #include <sys/queue.h> 99 #include <sys/conf.h> 100 101 #include <dev/cons.h> 102 103 #include <vm/vm.h> 104 105 #include <uvm/uvm_extern.h> 106 107 #include <machine/cpu.h> 108 #include <machine/autoconf.h> 109 #include <machine/conf.h> 110 111 #include <sparc/sparc/auxreg.h> 112 #include <sparc/dev/fdreg.h> 113 #include <sparc/dev/fdvar.h> 114 115 #define FDUNIT(dev) (minor(dev) / 8) 116 #define FDTYPE(dev) (minor(dev) % 8) 117 118 /* XXX misuse a flag to identify format operation */ 119 #define B_FORMAT B_XXX 120 121 #define FD_DEBUG 122 #ifdef FD_DEBUG 123 int fdc_debug = 0; 124 #endif 125 126 enum fdc_state { 127 DEVIDLE = 0, 128 MOTORWAIT, /* 1 */ 129 DOSEEK, /* 2 */ 130 SEEKWAIT, /* 3 */ 131 SEEKTIMEDOUT, /* 4 */ 132 SEEKCOMPLETE, /* 5 */ 133 DOIO, /* 6 */ 134 IOCOMPLETE, /* 7 */ 135 IOTIMEDOUT, /* 8 */ 136 IOCLEANUPWAIT, /* 9 */ 137 IOCLEANUPTIMEDOUT,/*10 */ 138 DORESET, /* 11 */ 139 RESETCOMPLETE, /* 12 */ 140 RESETTIMEDOUT, /* 13 */ 141 DORECAL, /* 14 */ 142 RECALWAIT, /* 15 */ 143 RECALTIMEDOUT, /* 16 */ 144 RECALCOMPLETE, /* 17 */ 145 }; 146 147 /* software state, per controller */ 148 struct fdc_softc { 149 struct device sc_dev; /* boilerplate */ 150 bus_space_tag_t sc_bustag; 151 152 struct fd_softc *sc_fd[4]; /* pointers to children */ 153 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 154 enum fdc_state sc_state; 155 int sc_flags; 156 #define FDC_82077 0x01 157 #define FDC_NEEDHEADSETTLE 0x02 158 #define FDC_EIS 0x04 159 #define FDC_NEEDMOTORWAIT 0x08 160 int sc_errors; /* number of retries so far */ 161 int sc_overruns; /* number of DMA overruns */ 162 int sc_cfg; /* current configuration */ 163 struct fdcio sc_io; 164 #define sc_handle sc_io.fdcio_handle 165 #define sc_reg_msr sc_io.fdcio_reg_msr 166 #define sc_reg_fifo sc_io.fdcio_reg_fifo 167 #define sc_reg_dor sc_io.fdcio_reg_dor 168 #define sc_reg_drs sc_io.fdcio_reg_msr 169 #define sc_itask sc_io.fdcio_itask 170 #define sc_istatus sc_io.fdcio_istatus 171 #define sc_data sc_io.fdcio_data 172 #define sc_tc sc_io.fdcio_tc 173 #define sc_nstat sc_io.fdcio_nstat 174 #define sc_status sc_io.fdcio_status 175 #define sc_intrcnt sc_io.fdcio_intrcnt 176 }; 177 178 #undef FDC_C_HANDLER 179 #ifndef FDC_C_HANDLER 180 extern struct fdcio *fdciop; 181 #endif 182 183 /* controller driver configuration */ 184 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 185 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 186 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 187 void fdcattach_obio __P((struct device *, struct device *, void *)); 188 189 void fdcattach __P((struct fdc_softc *, int)); 190 191 struct cfattach fdc_mainbus_ca = { 192 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 193 }; 194 struct cfattach fdc_obio_ca = { 195 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 196 }; 197 198 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 199 200 /* 201 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 202 * we tell them apart. 203 */ 204 struct fd_type { 205 int sectrac; /* sectors per track */ 206 int heads; /* number of heads */ 207 int seccyl; /* sectors per cylinder */ 208 int secsize; /* size code for sectors */ 209 int datalen; /* data len when secsize = 0 */ 210 int steprate; /* step rate and head unload time */ 211 int gap1; /* gap len between sectors */ 212 int gap2; /* formatting gap */ 213 int cylinders; /* total num of cylinders */ 214 int size; /* size of disk in sectors */ 215 int step; /* steps per cylinder */ 216 int rate; /* transfer speed code */ 217 int fillbyte; /* format fill byte */ 218 int interleave; /* interleave factor (formatting) */ 219 char *name; 220 }; 221 222 /* The order of entries in the following table is important -- BEWARE! */ 223 struct fd_type fd_types[] = { 224 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 226 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 227 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 228 }; 229 230 /* software state, per disk (with up to 4 disks per ctlr) */ 231 struct fd_softc { 232 struct device sc_dv; /* generic device info */ 233 struct disk sc_dk; /* generic disk info */ 234 235 struct fd_type *sc_deftype; /* default type descriptor */ 236 struct fd_type *sc_type; /* current type descriptor */ 237 238 daddr_t sc_blkno; /* starting block number */ 239 int sc_bcount; /* byte count left */ 240 int sc_skip; /* bytes already transferred */ 241 int sc_nblks; /* number of blocks currently tranferring */ 242 int sc_nbytes; /* number of bytes currently tranferring */ 243 244 int sc_drive; /* physical unit number */ 245 int sc_flags; 246 #define FD_OPEN 0x01 /* it's open */ 247 #define FD_MOTOR 0x02 /* motor should be on */ 248 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 249 int sc_cylin; /* where we think the head is */ 250 int sc_opts; /* user-set options */ 251 252 void *sc_sdhook; /* shutdownhook cookie */ 253 254 TAILQ_ENTRY(fd_softc) sc_drivechain; 255 int sc_ops; /* I/O ops since last switch */ 256 struct buf_queue sc_q; /* pending I/O requests */ 257 int sc_active; /* number of active I/O requests */ 258 }; 259 260 /* floppy driver configuration */ 261 int fdmatch __P((struct device *, struct cfdata *, void *)); 262 void fdattach __P((struct device *, struct device *, void *)); 263 264 struct cfattach fd_ca = { 265 sizeof(struct fd_softc), fdmatch, fdattach 266 }; 267 268 extern struct cfdriver fd_cd; 269 270 void fdgetdisklabel __P((dev_t)); 271 int fd_get_parms __P((struct fd_softc *)); 272 void fdstrategy __P((struct buf *)); 273 void fdstart __P((struct fd_softc *)); 274 int fdprint __P((void *, const char *)); 275 276 struct dkdriver fddkdriver = { fdstrategy }; 277 278 struct fd_type *fd_nvtotype __P((char *, int, int)); 279 void fd_set_motor __P((struct fdc_softc *fdc)); 280 void fd_motor_off __P((void *arg)); 281 void fd_motor_on __P((void *arg)); 282 int fdcresult __P((struct fdc_softc *fdc)); 283 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 284 void fdcstart __P((struct fdc_softc *fdc)); 285 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 286 void fdc_reset __P((struct fdc_softc *fdc)); 287 void fdctimeout __P((void *arg)); 288 void fdcpseudointr __P((void *arg)); 289 #ifdef FDC_C_HANDLER 290 int fdc_c_hwintr __P((void *)); 291 #else 292 void fdchwintr __P((void)); 293 #endif 294 int fdcswintr __P((void *)); 295 int fdcstate __P((struct fdc_softc *)); 296 void fdcretry __P((struct fdc_softc *fdc)); 297 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 298 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 299 void fd_do_eject __P((struct fd_softc *)); 300 void fd_mountroot_hook __P((struct device *)); 301 static int fdconf __P((struct fdc_softc *)); 302 static void establish_chip_type __P(( 303 struct fdc_softc *, 304 bus_space_tag_t, 305 bus_type_t, 306 bus_addr_t, 307 bus_size_t, 308 bus_space_handle_t)); 309 310 311 #if PIL_FDSOFT == 4 312 #define IE_FDSOFT IE_L4 313 #else 314 #error 4 315 #endif 316 317 #ifdef FDC_C_HANDLER 318 #if defined(SUN4M) 319 #define FD_SET_SWINTR do { \ 320 if (CPU_ISSUN4M) \ 321 raise(0, PIL_FDSOFT); \ 322 else \ 323 ienab_bis(IE_L4); \ 324 } while(0) 325 #else 326 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 327 #endif /* defined(SUN4M) */ 328 #endif /* FDC_C_HANDLER */ 329 330 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 331 332 int 333 fdcmatch_mainbus(parent, match, aux) 334 struct device *parent; 335 struct cfdata *match; 336 void *aux; 337 { 338 struct mainbus_attach_args *ma = aux; 339 340 /* 341 * Floppy controller is on mainbus on sun4c. 342 */ 343 if (!CPU_ISSUN4C) 344 return (0); 345 346 /* sun4c PROMs call the controller "fd" */ 347 if (strcmp("fd", ma->ma_name) != 0) 348 return (0); 349 350 return (bus_space_probe(ma->ma_bustag, 351 ma->ma_iospace, 352 ma->ma_paddr, 353 1, /* probe size */ 354 0, /* offset */ 355 0, /* flags */ 356 NULL, NULL)); 357 } 358 359 int 360 fdcmatch_obio(parent, match, aux) 361 struct device *parent; 362 struct cfdata *match; 363 void *aux; 364 { 365 union obio_attach_args *uoba = aux; 366 struct sbus_attach_args *sa; 367 368 /* 369 * Floppy controller is on obio on sun4m. 370 */ 371 if (uoba->uoba_isobio4 != 0) 372 return (0); 373 374 sa = &uoba->uoba_sbus; 375 376 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 377 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 378 return (0); 379 380 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 381 1, /* probe size */ 382 0, /* offset */ 383 0, /* flags */ 384 NULL, NULL)); 385 } 386 387 static void 388 establish_chip_type(fdc, tag, type, addr, size, handle) 389 struct fdc_softc *fdc; 390 bus_space_tag_t tag; 391 bus_type_t type; 392 bus_addr_t addr; 393 bus_size_t size; 394 bus_space_handle_t handle; 395 { 396 u_int8_t v; 397 398 /* 399 * This hack from Chris Torek: apparently DOR really 400 * addresses MSR/DRS on a 82072. 401 * We used to rely on the VERSION command to tell the 402 * difference (which did not work). 403 */ 404 405 /* First, check the size of the register bank */ 406 if (size < 8) 407 /* It isn't a 82077 */ 408 return; 409 410 /* Then probe the DOR register offset */ 411 if (bus_space_probe(tag, type, addr, 412 1, /* probe size */ 413 FDREG77_DOR, /* offset */ 414 0, /* flags */ 415 NULL, NULL) == 0) { 416 417 /* It isn't a 82077 */ 418 return; 419 } 420 421 v = bus_space_read_1(tag, handle, FDREG77_DOR); 422 if (v == NE7_RQM) { 423 /* 424 * Value in DOR looks like it's really MSR 425 */ 426 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 427 v = bus_space_read_1(tag, handle, FDREG77_DOR); 428 if (v == NE7_RQM) { 429 /* 430 * The value in the DOR didn't stick; 431 * it isn't a 82077 432 */ 433 return; 434 } 435 } 436 437 fdc->sc_flags |= FDC_82077; 438 } 439 440 /* 441 * Arguments passed between fdcattach and fdprobe. 442 */ 443 struct fdc_attach_args { 444 int fa_drive; 445 struct fd_type *fa_deftype; 446 }; 447 448 /* 449 * Print the location of a disk drive (called just before attaching the 450 * the drive). If `fdc' is not NULL, the drive was found but was not 451 * in the system config file; print the drive name as well. 452 * Return QUIET (config_find ignores this if the device was configured) to 453 * avoid printing `fdN not configured' messages. 454 */ 455 int 456 fdprint(aux, fdc) 457 void *aux; 458 const char *fdc; 459 { 460 register struct fdc_attach_args *fa = aux; 461 462 if (!fdc) 463 printf(" drive %d", fa->fa_drive); 464 return (QUIET); 465 } 466 467 /* 468 * Configure several parameters and features on the FDC. 469 * Return 0 on success. 470 */ 471 static int 472 fdconf(fdc) 473 struct fdc_softc *fdc; 474 { 475 int vroom; 476 477 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 478 return (-1); 479 480 /* 481 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 482 * the PROM thinks is appropriate. 483 */ 484 if ((vroom = fdc->sc_status[7]) == 0) 485 vroom = 0x64; 486 487 /* Configure controller to use FIFO and Implied Seek */ 488 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 489 return (-1); 490 if (fdc_wrfifo(fdc, vroom) != 0) 491 return (-1); 492 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 493 return (-1); 494 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 495 return (-1); 496 /* No result phase for the NE7CMD_CFG command */ 497 498 if ((fdc->sc_flags & FDC_82077) != 0) { 499 /* Lock configuration across soft resets. */ 500 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 501 fdcresult(fdc) != 1) { 502 #ifdef DEBUG 503 printf("fdconf: CFGLOCK failed"); 504 #endif 505 return (-1); 506 } 507 } 508 509 return (0); 510 #if 0 511 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 512 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 513 if (fdc_debug) 514 printf("[version cmd]"); 515 } 516 #endif 517 } 518 519 void 520 fdcattach_mainbus(parent, self, aux) 521 struct device *parent, *self; 522 void *aux; 523 { 524 struct fdc_softc *fdc = (void *)self; 525 struct mainbus_attach_args *ma = aux; 526 527 fdc->sc_bustag = ma->ma_bustag; 528 529 if (ma->ma_promvaddr != 0) 530 fdc->sc_handle = (bus_space_handle_t)ma->ma_promvaddr; 531 else { 532 if (bus_space_map2( 533 ma->ma_bustag, 534 ma->ma_iospace, 535 ma->ma_paddr, 536 ma->ma_size, 537 BUS_SPACE_MAP_LINEAR, 538 0, 539 &fdc->sc_handle) != 0) { 540 printf("%s: cannot map registers\n", self->dv_xname); 541 return; 542 } 543 } 544 545 establish_chip_type(fdc, 546 ma->ma_bustag, 547 ma->ma_iospace, 548 ma->ma_paddr, 549 ma->ma_size, 550 fdc->sc_handle); 551 552 fdcattach(fdc, ma->ma_pri); 553 } 554 555 void 556 fdcattach_obio(parent, self, aux) 557 struct device *parent, *self; 558 void *aux; 559 { 560 struct fdc_softc *fdc = (void *)self; 561 union obio_attach_args *uoba = aux; 562 struct sbus_attach_args *sa = &uoba->uoba_sbus; 563 564 fdc->sc_bustag = sa->sa_bustag; 565 566 if (sa->sa_npromvaddrs != 0) 567 fdc->sc_handle = (bus_space_handle_t)sa->sa_promvaddrs[0]; 568 else { 569 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 570 sa->sa_offset, 571 sa->sa_size, 572 BUS_SPACE_MAP_LINEAR, 573 0, 574 &fdc->sc_handle) != 0) { 575 printf("%s: cannot map control registers\n", 576 self->dv_xname); 577 return; 578 } 579 } 580 581 establish_chip_type(fdc, 582 sa->sa_bustag, 583 sa->sa_slot, 584 sa->sa_offset, 585 sa->sa_size, 586 fdc->sc_handle); 587 588 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 589 printf(": no drives attached\n"); 590 return; 591 } 592 593 if (sa->sa_nintr != 0) 594 fdcattach(fdc, sa->sa_pri); 595 } 596 597 void 598 fdcattach(fdc, pri) 599 struct fdc_softc *fdc; 600 int pri; 601 { 602 struct fdc_attach_args fa; 603 char code; 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; 634 } 635 636 #ifdef FDC_C_HANDLER 637 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 638 fdc_c_hwintr, fdc); 639 #else 640 fdciop = &fdc->sc_io; 641 (void)bus_intr_establish(fdc->sc_bustag, pri, 642 BUS_INTR_ESTABLISH_FASTTRAP, 643 (int (*) __P((void *)))fdchwintr, NULL); 644 #endif 645 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 646 BUS_INTR_ESTABLISH_SOFTINTR, 647 fdcswintr, fdc); 648 649 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 650 651 /* physical limit: four drives per controller. */ 652 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 653 fa.fa_deftype = NULL; /* unknown */ 654 fa.fa_deftype = &fd_types[0]; /* XXX */ 655 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 656 } 657 } 658 659 int 660 fdmatch(parent, match, aux) 661 struct device *parent; 662 struct cfdata *match; 663 void *aux; 664 { 665 struct fdc_softc *fdc = (void *)parent; 666 bus_space_tag_t t = fdc->sc_bustag; 667 bus_space_handle_t h = fdc->sc_handle; 668 struct fdc_attach_args *fa = aux; 669 int drive = fa->fa_drive; 670 int n, ok; 671 672 if (drive > 0) 673 /* XXX - for now, punt on more than one drive */ 674 return (0); 675 676 if ((fdc->sc_flags & FDC_82077) != 0) { 677 /* select drive and turn on motor */ 678 bus_space_write_1(t, h, fdc->sc_reg_dor, 679 drive | FDO_FRST | FDO_MOEN(drive)); 680 /* wait for motor to spin up */ 681 delay(250000); 682 } else { 683 auxregbisc(AUXIO4C_FDS, 0); 684 } 685 fdc->sc_nstat = 0; 686 fdc_wrfifo(fdc, NE7CMD_RECAL); 687 fdc_wrfifo(fdc, drive); 688 689 /* Wait for recalibration to complete */ 690 for (n = 0; n < 10000; n++) { 691 u_int8_t v; 692 693 delay(1000); 694 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 695 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 696 /* wait a bit longer till device *really* is ready */ 697 delay(100000); 698 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 699 break; 700 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 701 /* 702 * Got `invalid command'; we interpret it 703 * to mean that the re-calibrate hasn't in 704 * fact finished yet 705 */ 706 continue; 707 break; 708 } 709 } 710 n = fdc->sc_nstat; 711 #ifdef FD_DEBUG 712 if (fdc_debug) { 713 int i; 714 printf("fdprobe: %d stati:", n); 715 for (i = 0; i < n; i++) 716 printf(" 0x%x", fdc->sc_status[i]); 717 printf("\n"); 718 } 719 #endif 720 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 721 722 /* turn off motor */ 723 if ((fdc->sc_flags & FDC_82077) != 0) { 724 /* deselect drive and turn motor off */ 725 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 726 } else { 727 auxregbisc(0, AUXIO4C_FDS); 728 } 729 730 return (ok); 731 } 732 733 /* 734 * Controller is working, and drive responded. Attach it. 735 */ 736 void 737 fdattach(parent, self, aux) 738 struct device *parent, *self; 739 void *aux; 740 { 741 struct fdc_softc *fdc = (void *)parent; 742 struct fd_softc *fd = (void *)self; 743 struct fdc_attach_args *fa = aux; 744 struct fd_type *type = fa->fa_deftype; 745 int drive = fa->fa_drive; 746 747 /* XXX Allow `flags' to override device type? */ 748 749 if (type) 750 printf(": %s %d cyl, %d head, %d sec\n", type->name, 751 type->cylinders, type->heads, type->sectrac); 752 else 753 printf(": density unknown\n"); 754 755 BUFQ_INIT(&fd->sc_q); 756 fd->sc_cylin = -1; 757 fd->sc_drive = drive; 758 fd->sc_deftype = type; 759 fdc->sc_fd[drive] = fd; 760 761 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 762 fdc_wrfifo(fdc, type->steprate); 763 /* XXX head load time == 6ms */ 764 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 765 766 /* 767 * Initialize and attach the disk structure. 768 */ 769 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 770 fd->sc_dk.dk_driver = &fddkdriver; 771 disk_attach(&fd->sc_dk); 772 773 /* 774 * Establish a mountroot_hook anyway in case we booted 775 * with RB_ASKNAME and get selected as the boot device. 776 */ 777 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 778 779 /* Make sure the drive motor gets turned off at shutdown time. */ 780 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 781 782 /* XXX Need to do some more fiddling with sc_dk. */ 783 dk_establish(&fd->sc_dk, &fd->sc_dv); 784 } 785 786 __inline struct fd_type * 787 fd_dev_to_type(fd, dev) 788 struct fd_softc *fd; 789 dev_t dev; 790 { 791 int type = FDTYPE(dev); 792 793 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 794 return (NULL); 795 return (type ? &fd_types[type - 1] : fd->sc_deftype); 796 } 797 798 void 799 fdstrategy(bp) 800 register struct buf *bp; /* IO operation to perform */ 801 { 802 struct fd_softc *fd; 803 int unit = FDUNIT(bp->b_dev); 804 int sz; 805 int s; 806 807 /* Valid unit, controller, and request? */ 808 if (unit >= fd_cd.cd_ndevs || 809 (fd = fd_cd.cd_devs[unit]) == 0 || 810 bp->b_blkno < 0 || 811 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 812 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 813 (bp->b_flags & B_FORMAT) == 0)) { 814 bp->b_error = EINVAL; 815 goto bad; 816 } 817 818 /* If it's a null transfer, return immediately. */ 819 if (bp->b_bcount == 0) 820 goto done; 821 822 sz = howmany(bp->b_bcount, DEV_BSIZE); 823 824 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 825 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 826 - bp->b_blkno; 827 if (sz == 0) { 828 /* If exactly at end of disk, return EOF. */ 829 bp->b_resid = bp->b_bcount; 830 goto done; 831 } 832 if (sz < 0) { 833 /* If past end of disk, return EINVAL. */ 834 bp->b_error = EINVAL; 835 goto bad; 836 } 837 /* Otherwise, truncate request. */ 838 bp->b_bcount = sz << DEV_BSHIFT; 839 } 840 841 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 842 (FD_BSIZE(fd) * fd->sc_type->seccyl); 843 844 #ifdef FD_DEBUG 845 if (fdc_debug > 1) 846 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 847 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 848 #endif 849 850 /* Queue transfer on drive, activate drive and controller if idle. */ 851 s = splbio(); 852 disksort_cylinder(&fd->sc_q, bp); 853 untimeout(fd_motor_off, fd); /* 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 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 905 fd->sc_ops = 0; 906 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 907 if (BUFQ_NEXT(bp) != NULL) { 908 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 909 } else 910 fd->sc_active = 0; 911 } 912 bp->b_resid = fd->sc_bcount; 913 fd->sc_skip = 0; 914 BUFQ_REMOVE(&fd->sc_q, bp); 915 916 biodone(bp); 917 /* turn off motor 5s from now */ 918 timeout(fd_motor_off, fd, 5 * hz); 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_FIRST(&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 #ifdef FDC_C_HANDLER 1277 /* 1278 * hardware interrupt entry point: must be converted to `fast' 1279 * (in-window) handler. 1280 */ 1281 int 1282 fdc_c_hwintr(arg) 1283 void *arg; 1284 { 1285 struct fdc_softc *fdc = arg; 1286 bus_space_tag_t t = fdc->sc_bustag; 1287 bus_space_handle_t h = fdc->sc_handle; 1288 1289 switch (fdc->sc_itask) { 1290 case FDC_ITASK_NONE: 1291 return (0); 1292 case FDC_ITASK_SENSI: 1293 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1294 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1295 else 1296 fdc->sc_istatus = FDC_ISTATUS_DONE; 1297 FD_SET_SWINTR; 1298 return (1); 1299 case FDC_ITASK_DMA: 1300 /* Proceed with pseudo-dma below */ 1301 break; 1302 default: 1303 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1304 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1305 FD_SET_SWINTR; 1306 return (1); 1307 } 1308 1309 /* 1310 * Pseudo DMA in progress 1311 */ 1312 for (;;) { 1313 u_int8_t msr; 1314 1315 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1316 1317 if ((msr & NE7_RQM) == 0) 1318 /* That's all this round */ 1319 break; 1320 1321 if ((msr & NE7_NDM) == 0) { 1322 fdcresult(fdc); 1323 fdc->sc_istatus = FDC_ISTATUS_DONE; 1324 FD_SET_SWINTR; 1325 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1326 break; 1327 } 1328 1329 /* Another byte can be transferred */ 1330 if ((msr & NE7_DIO) != 0) 1331 *fdc->sc_data = 1332 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1333 else 1334 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1335 *fdc->sc_data); 1336 1337 fdc->sc_data++; 1338 if (--fdc->sc_tc == 0) { 1339 fdc->sc_istatus = FDC_ISTATUS_DONE; 1340 FTC_FLIP; 1341 fdcresult(fdc); 1342 FD_SET_SWINTR; 1343 break; 1344 } 1345 } 1346 return (1); 1347 } 1348 #endif 1349 1350 int 1351 fdcswintr(arg) 1352 void *arg; 1353 { 1354 struct fdc_softc *fdc = arg; 1355 int s; 1356 1357 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1358 /* This (software) interrupt is not for us */ 1359 return (0); 1360 1361 switch (fdc->sc_istatus) { 1362 case FDC_ISTATUS_ERROR: 1363 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1364 break; 1365 case FDC_ISTATUS_SPURIOUS: 1366 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1367 break; 1368 } 1369 1370 s = splbio(); 1371 fdcstate(fdc); 1372 splx(s); 1373 return (1); 1374 } 1375 1376 int 1377 fdcstate(fdc) 1378 struct fdc_softc *fdc; 1379 { 1380 #define st0 fdc->sc_status[0] 1381 #define st1 fdc->sc_status[1] 1382 #define cyl fdc->sc_status[1] 1383 #define FDC_WRFIFO(fdc, c) do { \ 1384 if (fdc_wrfifo(fdc, (c))) { \ 1385 goto xxx; \ 1386 } \ 1387 } while(0) 1388 1389 struct fd_softc *fd; 1390 struct buf *bp; 1391 int read, head, sec, nblks; 1392 struct fd_type *type; 1393 struct ne7_fd_formb *finfo = NULL; 1394 1395 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1396 fdc->sc_state = DORESET; 1397 1398 /* Clear I task/status field */ 1399 fdc->sc_istatus = FDC_ISTATUS_NONE; 1400 fdc->sc_itask = FDC_ITASK_NONE; 1401 1402 loop: 1403 /* Is there a drive for the controller to do a transfer with? */ 1404 fd = fdc->sc_drives.tqh_first; 1405 if (fd == NULL) { 1406 fdc->sc_state = DEVIDLE; 1407 return (0); 1408 } 1409 1410 /* Is there a transfer to this drive? If not, deactivate drive. */ 1411 bp = BUFQ_FIRST(&fd->sc_q); 1412 if (bp == NULL) { 1413 fd->sc_ops = 0; 1414 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1415 fd->sc_active = 0; 1416 goto loop; 1417 } 1418 1419 if (bp->b_flags & B_FORMAT) 1420 finfo = (struct ne7_fd_formb *)bp->b_data; 1421 1422 switch (fdc->sc_state) { 1423 case DEVIDLE: 1424 fdc->sc_errors = 0; 1425 fd->sc_skip = 0; 1426 fd->sc_bcount = bp->b_bcount; 1427 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1428 untimeout(fd_motor_off, fd); 1429 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1430 fdc->sc_state = MOTORWAIT; 1431 return (1); 1432 } 1433 if ((fd->sc_flags & FD_MOTOR) == 0) { 1434 /* Turn on the motor, being careful about pairing. */ 1435 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1436 if (ofd && ofd->sc_flags & FD_MOTOR) { 1437 untimeout(fd_motor_off, ofd); 1438 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1439 } 1440 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1441 fd_set_motor(fdc); 1442 fdc->sc_state = MOTORWAIT; 1443 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1444 /* Allow .25s for motor to stabilize. */ 1445 timeout(fd_motor_on, fd, hz / 4); 1446 } else { 1447 fd->sc_flags &= ~FD_MOTOR_WAIT; 1448 goto loop; 1449 } 1450 return (1); 1451 } 1452 /* Make sure the right drive is selected. */ 1453 fd_set_motor(fdc); 1454 1455 /*FALLTHROUGH*/ 1456 case DOSEEK: 1457 doseek: 1458 if ((fdc->sc_flags & FDC_EIS) && 1459 (bp->b_flags & B_FORMAT) == 0) { 1460 fd->sc_cylin = bp->b_cylinder; 1461 /* We use implied seek */ 1462 goto doio; 1463 } 1464 1465 if (fd->sc_cylin == bp->b_cylinder) 1466 goto doio; 1467 1468 fd->sc_cylin = -1; 1469 fdc->sc_state = SEEKWAIT; 1470 fdc->sc_nstat = 0; 1471 1472 fd->sc_dk.dk_seek++; 1473 1474 disk_busy(&fd->sc_dk); 1475 timeout(fdctimeout, fdc, 4 * hz); 1476 1477 /* specify command */ 1478 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1479 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1480 /* XXX head load time == 6ms */ 1481 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1482 1483 fdc->sc_itask = FDC_ITASK_SENSEI; 1484 /* seek function */ 1485 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1486 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1487 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1488 return (1); 1489 1490 case DOIO: 1491 doio: 1492 if (finfo != NULL) 1493 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1494 (char *)finfo; 1495 type = fd->sc_type; 1496 sec = fd->sc_blkno % type->seccyl; 1497 nblks = type->seccyl - sec; 1498 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1499 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1500 fd->sc_nblks = nblks; 1501 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1502 head = sec / type->sectrac; 1503 sec -= head * type->sectrac; 1504 #ifdef DIAGNOSTIC 1505 {int block; 1506 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1507 if (block != fd->sc_blkno) { 1508 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1509 #ifdef DDB 1510 Debugger(); 1511 #endif 1512 }} 1513 #endif 1514 read = bp->b_flags & B_READ; 1515 1516 /* Setup for pseudo DMA */ 1517 fdc->sc_data = bp->b_data + fd->sc_skip; 1518 fdc->sc_tc = fd->sc_nbytes; 1519 1520 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1521 fdc->sc_reg_drs, type->rate); 1522 #ifdef FD_DEBUG 1523 if (fdc_debug > 1) 1524 printf("fdcstate: doio: %s drive %d " 1525 "track %d head %d sec %d nblks %d\n", 1526 finfo ? "format" : 1527 (read ? "read" : "write"), 1528 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1529 #endif 1530 fdc->sc_state = IOCOMPLETE; 1531 fdc->sc_itask = FDC_ITASK_DMA; 1532 fdc->sc_nstat = 0; 1533 1534 disk_busy(&fd->sc_dk); 1535 1536 /* allow 3 seconds for operation */ 1537 timeout(fdctimeout, fdc, 3 * hz); 1538 1539 if (finfo != NULL) { 1540 /* formatting */ 1541 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1542 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1543 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1544 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1545 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1546 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1547 } else { 1548 if (read) 1549 FDC_WRFIFO(fdc, NE7CMD_READ); 1550 else 1551 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1552 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1553 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1554 FDC_WRFIFO(fdc, head); 1555 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1556 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1557 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1558 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1559 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1560 } 1561 1562 return (1); /* will return later */ 1563 1564 case SEEKWAIT: 1565 untimeout(fdctimeout, fdc); 1566 fdc->sc_state = SEEKCOMPLETE; 1567 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1568 /* allow 1/50 second for heads to settle */ 1569 timeout(fdcpseudointr, fdc, hz / 50); 1570 return (1); /* will return later */ 1571 } 1572 /*FALLTHROUGH*/ 1573 case SEEKCOMPLETE: 1574 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1575 1576 /* Make sure seek really happened. */ 1577 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1578 cyl != bp->b_cylinder * fd->sc_type->step) { 1579 #ifdef FD_DEBUG 1580 if (fdc_debug) 1581 fdcstatus(fdc, "seek failed"); 1582 #endif 1583 fdcretry(fdc); 1584 goto loop; 1585 } 1586 fd->sc_cylin = bp->b_cylinder; 1587 goto doio; 1588 1589 case IOTIMEDOUT: 1590 /* 1591 * Try to abort the I/O operation without resetting 1592 * the chip first. Poke TC and arrange to pick up 1593 * the timed out I/O command's status. 1594 */ 1595 fdc->sc_itask = FDC_ITASK_RESULT; 1596 fdc->sc_state = IOCLEANUPWAIT; 1597 fdc->sc_nstat = 0; 1598 /* 1/10 second should be enough */ 1599 timeout(fdctimeout, fdc, hz/10); 1600 FTC_FLIP; 1601 return (1); 1602 1603 case IOCLEANUPTIMEDOUT: 1604 case SEEKTIMEDOUT: 1605 case RECALTIMEDOUT: 1606 case RESETTIMEDOUT: 1607 fdcstatus(fdc, "timeout"); 1608 1609 /* All other timeouts always roll through to a chip reset */ 1610 fdcretry(fdc); 1611 1612 /* Force reset, no matter what fdcretry() says */ 1613 fdc->sc_state = DORESET; 1614 goto loop; 1615 1616 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1617 untimeout(fdctimeout, fdc); 1618 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1619 fdcretry(fdc); 1620 goto loop; 1621 1622 case IOCOMPLETE: /* IO DONE, post-analyze */ 1623 untimeout(fdctimeout, fdc); 1624 1625 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1626 1627 if (fdc->sc_nstat != 7 || st1 != 0 || 1628 ((st0 & 0xf8) != 0 && 1629 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1630 #ifdef FD_DEBUG 1631 if (fdc_debug) { 1632 fdcstatus(fdc, 1633 bp->b_flags & B_READ 1634 ? "read failed" : "write failed"); 1635 printf("blkno %d nblks %d nstat %d tc %d\n", 1636 fd->sc_blkno, fd->sc_nblks, 1637 fdc->sc_nstat, fdc->sc_tc); 1638 } 1639 #endif 1640 if (fdc->sc_nstat == 7 && 1641 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1642 1643 /* 1644 * Silently retry overruns if no other 1645 * error bit is set. Adjust threshold. 1646 */ 1647 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1648 if (thr < 15) { 1649 thr++; 1650 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1651 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1652 #ifdef FD_DEBUG 1653 if (fdc_debug) 1654 printf("fdc: %d -> threshold\n", thr); 1655 #endif 1656 fdconf(fdc); 1657 fdc->sc_overruns = 0; 1658 } 1659 if (++fdc->sc_overruns < 3) { 1660 fdc->sc_state = DOIO; 1661 goto loop; 1662 } 1663 } 1664 fdcretry(fdc); 1665 goto loop; 1666 } 1667 if (fdc->sc_errors) { 1668 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1669 fd->sc_skip / FD_BSIZE(fd), 1670 (struct disklabel *)NULL); 1671 printf("\n"); 1672 fdc->sc_errors = 0; 1673 } else { 1674 if (--fdc->sc_overruns < -20) { 1675 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1676 if (thr > 0) { 1677 thr--; 1678 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1679 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1680 #ifdef FD_DEBUG 1681 if (fdc_debug) 1682 printf("fdc: %d -> threshold\n", thr); 1683 #endif 1684 fdconf(fdc); 1685 } 1686 fdc->sc_overruns = 0; 1687 } 1688 } 1689 fd->sc_blkno += fd->sc_nblks; 1690 fd->sc_skip += fd->sc_nbytes; 1691 fd->sc_bcount -= fd->sc_nbytes; 1692 if (finfo == NULL && fd->sc_bcount > 0) { 1693 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1694 goto doseek; 1695 } 1696 fdfinish(fd, bp); 1697 goto loop; 1698 1699 case DORESET: 1700 /* try a reset, keep motor on */ 1701 fd_set_motor(fdc); 1702 delay(100); 1703 fdc->sc_nstat = 0; 1704 fdc->sc_itask = FDC_ITASK_SENSEI; 1705 fdc->sc_state = RESETCOMPLETE; 1706 timeout(fdctimeout, fdc, hz / 2); 1707 fdc_reset(fdc); 1708 return (1); /* will return later */ 1709 1710 case RESETCOMPLETE: 1711 untimeout(fdctimeout, fdc); 1712 fdconf(fdc); 1713 1714 /* FALLTHROUGH */ 1715 case DORECAL: 1716 fdc->sc_state = RECALWAIT; 1717 fdc->sc_itask = FDC_ITASK_SENSEI; 1718 fdc->sc_nstat = 0; 1719 timeout(fdctimeout, fdc, 5 * hz); 1720 /* recalibrate function */ 1721 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1722 FDC_WRFIFO(fdc, fd->sc_drive); 1723 return (1); /* will return later */ 1724 1725 case RECALWAIT: 1726 untimeout(fdctimeout, fdc); 1727 fdc->sc_state = RECALCOMPLETE; 1728 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1729 /* allow 1/30 second for heads to settle */ 1730 timeout(fdcpseudointr, fdc, hz / 30); 1731 return (1); /* will return later */ 1732 } 1733 1734 case RECALCOMPLETE: 1735 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1736 #ifdef FD_DEBUG 1737 if (fdc_debug) 1738 fdcstatus(fdc, "recalibrate failed"); 1739 #endif 1740 fdcretry(fdc); 1741 goto loop; 1742 } 1743 fd->sc_cylin = 0; 1744 goto doseek; 1745 1746 case MOTORWAIT: 1747 if (fd->sc_flags & FD_MOTOR_WAIT) 1748 return (1); /* time's not up yet */ 1749 goto doseek; 1750 1751 default: 1752 fdcstatus(fdc, "stray interrupt"); 1753 return (1); 1754 } 1755 #ifdef DIAGNOSTIC 1756 panic("fdcintr: impossible"); 1757 #endif 1758 1759 xxx: 1760 /* 1761 * We get here if the chip locks up in FDC_WRFIFO() 1762 * Cancel any operation and schedule a reset 1763 */ 1764 untimeout(fdctimeout, fdc); 1765 fdcretry(fdc); 1766 (fdc)->sc_state = DORESET; 1767 goto loop; 1768 1769 #undef st0 1770 #undef st1 1771 #undef cyl 1772 } 1773 1774 void 1775 fdcretry(fdc) 1776 struct fdc_softc *fdc; 1777 { 1778 struct fd_softc *fd; 1779 struct buf *bp; 1780 int error = EIO; 1781 1782 fd = fdc->sc_drives.tqh_first; 1783 bp = BUFQ_FIRST(&fd->sc_q); 1784 1785 fdc->sc_overruns = 0; 1786 if (fd->sc_opts & FDOPT_NORETRY) 1787 goto fail; 1788 1789 switch (fdc->sc_errors) { 1790 case 0: 1791 if (fdc->sc_nstat == 7 && 1792 (fdc->sc_status[0] & 0xd8) == 0x40 && 1793 (fdc->sc_status[1] & 0x2) == 0x2) { 1794 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1795 error = EROFS; 1796 goto failsilent; 1797 } 1798 /* try again */ 1799 fdc->sc_state = 1800 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1801 break; 1802 1803 case 1: case 2: case 3: 1804 /* didn't work; try recalibrating */ 1805 fdc->sc_state = DORECAL; 1806 break; 1807 1808 case 4: 1809 if (fdc->sc_nstat == 7 && 1810 fdc->sc_status[0] == 0 && 1811 fdc->sc_status[1] == 0 && 1812 fdc->sc_status[2] == 0) { 1813 /* 1814 * We've retried a few times and we've got 1815 * valid status and all three status bytes 1816 * are zero. Assume this condition is the 1817 * result of no disk loaded into the drive. 1818 */ 1819 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1820 error = ENODEV; 1821 goto failsilent; 1822 } 1823 1824 /* still no go; reset the bastard */ 1825 fdc->sc_state = DORESET; 1826 break; 1827 1828 default: 1829 fail: 1830 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1831 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1832 fd->sc_skip / FD_BSIZE(fd), 1833 (struct disklabel *)NULL); 1834 fdcstatus(fdc, "\n controller status"); 1835 } 1836 1837 failsilent: 1838 bp->b_flags |= B_ERROR; 1839 bp->b_error = error; 1840 fdfinish(fd, bp); 1841 } 1842 fdc->sc_errors++; 1843 } 1844 1845 int 1846 fdsize(dev) 1847 dev_t dev; 1848 { 1849 1850 /* Swapping to floppies would not make sense. */ 1851 return (-1); 1852 } 1853 1854 int 1855 fddump(dev, blkno, va, size) 1856 dev_t dev; 1857 daddr_t blkno; 1858 caddr_t va; 1859 size_t size; 1860 { 1861 1862 /* Not implemented. */ 1863 return (EINVAL); 1864 } 1865 1866 int 1867 fdioctl(dev, cmd, addr, flag, p) 1868 dev_t dev; 1869 u_long cmd; 1870 caddr_t addr; 1871 int flag; 1872 struct proc *p; 1873 { 1874 struct fd_softc *fd; 1875 struct fdc_softc *fdc; 1876 struct fdformat_parms *form_parms; 1877 struct fdformat_cmd *form_cmd; 1878 struct ne7_fd_formb fd_formb; 1879 int il[FD_MAX_NSEC + 1]; 1880 int unit; 1881 int i, j; 1882 int error; 1883 1884 unit = FDUNIT(dev); 1885 if (unit >= fd_cd.cd_ndevs) 1886 return (ENXIO); 1887 1888 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1889 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1890 1891 switch (cmd) { 1892 case DIOCGDINFO: 1893 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1894 return 0; 1895 1896 case DIOCWLABEL: 1897 if ((flag & FWRITE) == 0) 1898 return EBADF; 1899 /* XXX do something */ 1900 return (0); 1901 1902 case DIOCWDINFO: 1903 if ((flag & FWRITE) == 0) 1904 return (EBADF); 1905 1906 error = setdisklabel(fd->sc_dk.dk_label, 1907 (struct disklabel *)addr, 0, 1908 fd->sc_dk.dk_cpulabel); 1909 if (error) 1910 return (error); 1911 1912 error = writedisklabel(dev, fdstrategy, 1913 fd->sc_dk.dk_label, 1914 fd->sc_dk.dk_cpulabel); 1915 return (error); 1916 1917 case DIOCLOCK: 1918 /* 1919 * Nothing to do here, really. 1920 */ 1921 return (0); 1922 1923 case DIOCEJECT: 1924 if (*(int *)addr == 0) { 1925 int part = DISKPART(dev); 1926 /* 1927 * Don't force eject: check that we are the only 1928 * partition open. If so, unlock it. 1929 */ 1930 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1931 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1932 fd->sc_dk.dk_openmask) { 1933 return (EBUSY); 1934 } 1935 } 1936 /* FALLTHROUGH */ 1937 case ODIOCEJECT: 1938 fd_do_eject(fd); 1939 return (0); 1940 1941 case FDIOCGETFORMAT: 1942 form_parms = (struct fdformat_parms *)addr; 1943 form_parms->fdformat_version = FDFORMAT_VERSION; 1944 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1945 form_parms->ncyl = fd->sc_type->cylinders; 1946 form_parms->nspt = fd->sc_type->sectrac; 1947 form_parms->ntrk = fd->sc_type->heads; 1948 form_parms->stepspercyl = fd->sc_type->step; 1949 form_parms->gaplen = fd->sc_type->gap2; 1950 form_parms->fillbyte = fd->sc_type->fillbyte; 1951 form_parms->interleave = fd->sc_type->interleave; 1952 switch (fd->sc_type->rate) { 1953 case FDC_500KBPS: 1954 form_parms->xfer_rate = 500 * 1024; 1955 break; 1956 case FDC_300KBPS: 1957 form_parms->xfer_rate = 300 * 1024; 1958 break; 1959 case FDC_250KBPS: 1960 form_parms->xfer_rate = 250 * 1024; 1961 break; 1962 default: 1963 return (EINVAL); 1964 } 1965 return (0); 1966 1967 case FDIOCSETFORMAT: 1968 if ((flag & FWRITE) == 0) 1969 return (EBADF); /* must be opened for writing */ 1970 1971 form_parms = (struct fdformat_parms *)addr; 1972 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1973 return (EINVAL);/* wrong version of formatting prog */ 1974 1975 i = form_parms->nbps >> 7; 1976 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1977 i & ~(1 << (ffs(i)-1))) 1978 /* not a power-of-two multiple of 128 */ 1979 return (EINVAL); 1980 1981 switch (form_parms->xfer_rate) { 1982 case 500 * 1024: 1983 fd->sc_type->rate = FDC_500KBPS; 1984 break; 1985 case 300 * 1024: 1986 fd->sc_type->rate = FDC_300KBPS; 1987 break; 1988 case 250 * 1024: 1989 fd->sc_type->rate = FDC_250KBPS; 1990 break; 1991 default: 1992 return (EINVAL); 1993 } 1994 1995 if (form_parms->nspt > FD_MAX_NSEC || 1996 form_parms->fillbyte > 0xff || 1997 form_parms->interleave > 0xff) 1998 return EINVAL; 1999 fd->sc_type->sectrac = form_parms->nspt; 2000 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2001 return EINVAL; 2002 fd->sc_type->heads = form_parms->ntrk; 2003 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2004 fd->sc_type->secsize = ffs(i)-1; 2005 fd->sc_type->gap2 = form_parms->gaplen; 2006 fd->sc_type->cylinders = form_parms->ncyl; 2007 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2008 form_parms->nbps / DEV_BSIZE; 2009 fd->sc_type->step = form_parms->stepspercyl; 2010 fd->sc_type->fillbyte = form_parms->fillbyte; 2011 fd->sc_type->interleave = form_parms->interleave; 2012 return (0); 2013 2014 case FDIOCFORMAT_TRACK: 2015 if((flag & FWRITE) == 0) 2016 /* must be opened for writing */ 2017 return (EBADF); 2018 form_cmd = (struct fdformat_cmd *)addr; 2019 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2020 /* wrong version of formatting prog */ 2021 return (EINVAL); 2022 2023 if (form_cmd->head >= fd->sc_type->heads || 2024 form_cmd->cylinder >= fd->sc_type->cylinders) { 2025 return (EINVAL); 2026 } 2027 2028 fd_formb.head = form_cmd->head; 2029 fd_formb.cyl = form_cmd->cylinder; 2030 fd_formb.transfer_rate = fd->sc_type->rate; 2031 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2032 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2033 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2034 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2035 2036 bzero(il, sizeof il); 2037 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2038 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2039 j++; 2040 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2041 j += fd->sc_type->interleave; 2042 } 2043 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2044 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2045 fd_formb.fd_formb_headno(i) = form_cmd->head; 2046 fd_formb.fd_formb_secno(i) = il[i+1]; 2047 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2048 } 2049 2050 return fdformat(dev, &fd_formb, p); 2051 2052 case FDIOCGETOPTS: /* get drive options */ 2053 *(int *)addr = fd->sc_opts; 2054 return (0); 2055 2056 case FDIOCSETOPTS: /* set drive options */ 2057 fd->sc_opts = *(int *)addr; 2058 return (0); 2059 2060 #ifdef FD_DEBUG 2061 case _IO('f', 100): 2062 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2063 fdcresult(fdc); 2064 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2065 for (i = 0; i < fdc->sc_nstat; i++) 2066 printf(" 0x%x", fdc->sc_status[i]); 2067 printf(">\n"); 2068 return (0); 2069 2070 case _IOW('f', 101, int): 2071 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2072 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2073 fdconf(fdc); 2074 return (0); 2075 2076 case _IO('f', 102): 2077 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2078 fdcresult(fdc); 2079 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2080 for (i=0; i< fdc->sc_nstat; i++) 2081 printf(" 0x%x", fdc->sc_status[i]); 2082 printf(">\n"); 2083 return (0); 2084 #endif 2085 default: 2086 return (ENOTTY); 2087 } 2088 2089 #ifdef DIAGNOSTIC 2090 panic("fdioctl: impossible"); 2091 #endif 2092 } 2093 2094 int 2095 fdformat(dev, finfo, p) 2096 dev_t dev; 2097 struct ne7_fd_formb *finfo; 2098 struct proc *p; 2099 { 2100 int rv = 0, s; 2101 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2102 struct fd_type *type = fd->sc_type; 2103 struct buf *bp; 2104 2105 /* set up a buffer header for fdstrategy() */ 2106 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2107 if (bp == 0) 2108 return (ENOBUFS); 2109 2110 PHOLD(p); 2111 bzero((void *)bp, sizeof(struct buf)); 2112 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2113 bp->b_proc = p; 2114 bp->b_dev = dev; 2115 2116 /* 2117 * Calculate a fake blkno, so fdstrategy() would initiate a 2118 * seek to the requested cylinder. 2119 */ 2120 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2121 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2122 / DEV_BSIZE; 2123 2124 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2125 bp->b_data = (caddr_t)finfo; 2126 2127 #ifdef FD_DEBUG 2128 if (fdc_debug) { 2129 int i; 2130 2131 printf("fdformat: blkno 0x%x count %ld\n", 2132 bp->b_blkno, bp->b_bcount); 2133 2134 printf("\tcyl:\t%d\n", finfo->cyl); 2135 printf("\thead:\t%d\n", finfo->head); 2136 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2137 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2138 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2139 printf("\ttrack data:"); 2140 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2141 printf(" [c%d h%d s%d]", 2142 finfo->fd_formb_cylno(i), 2143 finfo->fd_formb_headno(i), 2144 finfo->fd_formb_secno(i) ); 2145 if (finfo->fd_formb_secsize(i) != 2) 2146 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2147 } 2148 printf("\n"); 2149 } 2150 #endif 2151 2152 /* now do the format */ 2153 fdstrategy(bp); 2154 2155 /* ...and wait for it to complete */ 2156 s = splbio(); 2157 while (!(bp->b_flags & B_DONE)) { 2158 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2159 if (rv == EWOULDBLOCK) 2160 break; 2161 } 2162 splx(s); 2163 2164 if (rv == EWOULDBLOCK) { 2165 /* timed out */ 2166 rv = EIO; 2167 biodone(bp); 2168 } 2169 if (bp->b_flags & B_ERROR) { 2170 rv = bp->b_error; 2171 } 2172 PRELE(p); 2173 free(bp, M_TEMP); 2174 return (rv); 2175 } 2176 2177 void 2178 fdgetdisklabel(dev) 2179 dev_t dev; 2180 { 2181 int unit = FDUNIT(dev), i; 2182 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2183 struct disklabel *lp = fd->sc_dk.dk_label; 2184 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2185 2186 bzero(lp, sizeof(struct disklabel)); 2187 bzero(lp, sizeof(struct cpu_disklabel)); 2188 2189 lp->d_type = DTYPE_FLOPPY; 2190 lp->d_secsize = FD_BSIZE(fd); 2191 lp->d_secpercyl = fd->sc_type->seccyl; 2192 lp->d_nsectors = fd->sc_type->sectrac; 2193 lp->d_ncylinders = fd->sc_type->cylinders; 2194 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2195 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2196 lp->d_rpm = 3600; /* XXX like it matters... */ 2197 2198 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2199 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2200 lp->d_interleave = 1; 2201 2202 lp->d_partitions[RAW_PART].p_offset = 0; 2203 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2204 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2205 lp->d_npartitions = RAW_PART + 1; 2206 2207 lp->d_magic = DISKMAGIC; 2208 lp->d_magic2 = DISKMAGIC; 2209 lp->d_checksum = dkcksum(lp); 2210 2211 /* 2212 * Call the generic disklabel extraction routine. If there's 2213 * not a label there, fake it. 2214 */ 2215 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2216 strncpy(lp->d_packname, "default label", 2217 sizeof(lp->d_packname)); 2218 /* 2219 * Reset the partition info; it might have gotten 2220 * trashed in readdisklabel(). 2221 * 2222 * XXX Why do we have to do this? readdisklabel() 2223 * should be safe... 2224 */ 2225 for (i = 0; i < MAXPARTITIONS; ++i) { 2226 lp->d_partitions[i].p_offset = 0; 2227 if (i == RAW_PART) { 2228 lp->d_partitions[i].p_size = 2229 lp->d_secpercyl * lp->d_ncylinders; 2230 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2231 } else { 2232 lp->d_partitions[i].p_size = 0; 2233 lp->d_partitions[i].p_fstype = FS_UNUSED; 2234 } 2235 } 2236 lp->d_npartitions = RAW_PART + 1; 2237 } 2238 } 2239 2240 void 2241 fd_do_eject(fd) 2242 struct fd_softc *fd; 2243 { 2244 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2245 2246 if (CPU_ISSUN4C) { 2247 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2248 delay(10); 2249 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2250 return; 2251 } 2252 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2253 bus_space_tag_t t = fdc->sc_bustag; 2254 bus_space_handle_t h = fdc->sc_handle; 2255 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2256 2257 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2258 delay(10); 2259 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2260 return; 2261 } 2262 } 2263 2264 #ifdef MEMORY_DISK_HOOKS 2265 int fd_read_md_image __P((size_t *, caddr_t *)); 2266 #endif 2267 2268 /* ARGSUSED */ 2269 void 2270 fd_mountroot_hook(dev) 2271 struct device *dev; 2272 { 2273 int c; 2274 2275 fd_do_eject((struct fd_softc *)dev); 2276 printf("Insert filesystem floppy and press return."); 2277 for (;;) { 2278 c = cngetc(); 2279 if ((c == '\r') || (c == '\n')) { 2280 printf("\n"); 2281 break; 2282 } 2283 } 2284 } 2285 2286 #ifdef MEMORY_DISK_HOOKS 2287 2288 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2289 2290 int 2291 fd_read_md_image(sizep, addrp) 2292 size_t *sizep; 2293 caddr_t *addrp; 2294 { 2295 struct buf buf, *bp = &buf; 2296 dev_t dev; 2297 off_t offset; 2298 caddr_t addr; 2299 2300 dev = makedev(54,0); /* XXX */ 2301 2302 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2303 *addrp = addr; 2304 2305 if (fdopen(dev, 0, S_IFCHR, NULL)) 2306 panic("fd: mountroot: fdopen"); 2307 2308 offset = 0; 2309 2310 for (;;) { 2311 bp->b_dev = dev; 2312 bp->b_error = 0; 2313 bp->b_resid = 0; 2314 bp->b_proc = NULL; 2315 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2316 bp->b_blkno = btodb(offset); 2317 bp->b_bcount = DEV_BSIZE; 2318 bp->b_data = addr; 2319 fdstrategy(bp); 2320 while ((bp->b_flags & B_DONE) == 0) { 2321 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2322 } 2323 if (bp->b_error) 2324 panic("fd: mountroot: fdread error %d", bp->b_error); 2325 2326 if (bp->b_resid != 0) 2327 break; 2328 2329 addr += DEV_BSIZE; 2330 offset += DEV_BSIZE; 2331 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2332 break; 2333 } 2334 (void)fdclose(dev, 0, S_IFCHR, NULL); 2335 *sizep = offset; 2336 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2337 return (0); 2338 } 2339 #endif 2340
Indexes created Fri Oct 03 02:09:57 GMT 2025