fd.c revision 1.141
1 /* $NetBSD: fd.c,v 1.141 2008/06/11 21:25:31 drochner Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Don Ahn. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)fd.c 7.4 (Berkeley) 5/25/91 64 */ 65 66 /*- 67 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 68 * 69 * This code is derived from software contributed to Berkeley by 70 * Don Ahn. 71 * 72 * Redistribution and use in source and binary forms, with or without 73 * modification, are permitted provided that the following conditions 74 * are met: 75 * 1. Redistributions of source code must retain the above copyright 76 * notice, this list of conditions and the following disclaimer. 77 * 2. Redistributions in binary form must reproduce the above copyright 78 * notice, this list of conditions and the following disclaimer in the 79 * documentation and/or other materials provided with the distribution. 80 * 3. All advertising materials mentioning features or use of this software 81 * must display the following acknowledgement: 82 * This product includes software developed by the University of 83 * California, Berkeley and its contributors. 84 * 4. Neither the name of the University nor the names of its contributors 85 * may be used to endorse or promote products derived from this software 86 * without specific prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 91 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 98 * SUCH DAMAGE. 99 * 100 * @(#)fd.c 7.4 (Berkeley) 5/25/91 101 */ 102 103 #include <sys/cdefs.h> 104 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.141 2008/06/11 21:25:31 drochner Exp $"); 105 106 #include "opt_ddb.h" 107 #include "opt_md.h" 108 109 #include <sys/param.h> 110 #include <sys/systm.h> 111 #include <sys/callout.h> 112 #include <sys/kernel.h> 113 #include <sys/file.h> 114 #include <sys/ioctl.h> 115 #include <sys/device.h> 116 #include <sys/disklabel.h> 117 #include <sys/disk.h> 118 #include <sys/fdio.h> 119 #include <sys/buf.h> 120 #include <sys/bufq.h> 121 #include <sys/malloc.h> 122 #include <sys/proc.h> 123 #include <sys/uio.h> 124 #include <sys/stat.h> 125 #include <sys/syslog.h> 126 #include <sys/queue.h> 127 #include <sys/conf.h> 128 #include <sys/intr.h> 129 130 #include <dev/cons.h> 131 132 #include <uvm/uvm_extern.h> 133 134 #include <machine/autoconf.h> 135 136 #include <sparc/sparc/auxreg.h> 137 #include <sparc/dev/fdreg.h> 138 #include <sparc/dev/fdvar.h> 139 140 #define FDUNIT(dev) (minor(dev) / 8) 141 #define FDTYPE(dev) (minor(dev) % 8) 142 143 /* (mis)use device use flag to identify format operation */ 144 #define B_FORMAT B_DEVPRIVATE 145 146 #define FD_DEBUG 147 #ifdef FD_DEBUG 148 int fdc_debug = 0; 149 #endif 150 151 enum fdc_state { 152 DEVIDLE = 0, 153 MOTORWAIT, /* 1 */ 154 DOSEEK, /* 2 */ 155 SEEKWAIT, /* 3 */ 156 SEEKTIMEDOUT, /* 4 */ 157 SEEKCOMPLETE, /* 5 */ 158 DOIO, /* 6 */ 159 IOCOMPLETE, /* 7 */ 160 IOTIMEDOUT, /* 8 */ 161 IOCLEANUPWAIT, /* 9 */ 162 IOCLEANUPTIMEDOUT,/*10 */ 163 DORESET, /* 11 */ 164 RESETCOMPLETE, /* 12 */ 165 RESETTIMEDOUT, /* 13 */ 166 DORECAL, /* 14 */ 167 RECALWAIT, /* 15 */ 168 RECALTIMEDOUT, /* 16 */ 169 RECALCOMPLETE, /* 17 */ 170 DODSKCHG, /* 18 */ 171 DSKCHGWAIT, /* 19 */ 172 DSKCHGTIMEDOUT, /* 20 */ 173 }; 174 175 /* software state, per controller */ 176 struct fdc_softc { 177 struct device sc_dev; /* boilerplate */ 178 bus_space_tag_t sc_bustag; 179 180 struct callout sc_timo_ch; /* timeout callout */ 181 struct callout sc_intr_ch; /* pseudo-intr callout */ 182 183 struct fd_softc *sc_fd[4]; /* pointers to children */ 184 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 185 enum fdc_state sc_state; 186 int sc_flags; 187 #define FDC_82077 0x01 188 #define FDC_NEEDHEADSETTLE 0x02 189 #define FDC_EIS 0x04 190 #define FDC_NEEDMOTORWAIT 0x08 191 int sc_errors; /* number of retries so far */ 192 int sc_overruns; /* number of DMA overruns */ 193 int sc_cfg; /* current configuration */ 194 struct fdcio sc_io; 195 #define sc_handle sc_io.fdcio_handle 196 #define sc_reg_msr sc_io.fdcio_reg_msr 197 #define sc_reg_fifo sc_io.fdcio_reg_fifo 198 #define sc_reg_dor sc_io.fdcio_reg_dor 199 #define sc_reg_dir sc_io.fdcio_reg_dir 200 #define sc_reg_drs sc_io.fdcio_reg_msr 201 #define sc_itask sc_io.fdcio_itask 202 #define sc_istatus sc_io.fdcio_istatus 203 #define sc_data sc_io.fdcio_data 204 #define sc_tc sc_io.fdcio_tc 205 #define sc_nstat sc_io.fdcio_nstat 206 #define sc_status sc_io.fdcio_status 207 #define sc_intrcnt sc_io.fdcio_intrcnt 208 209 void *sc_sicookie; /* softintr(9) cookie */ 210 }; 211 212 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 213 214 /* controller driver configuration */ 215 int fdcmatch_mainbus(struct device *, struct cfdata *, void *); 216 int fdcmatch_obio(struct device *, struct cfdata *, void *); 217 void fdcattach_mainbus(struct device *, struct device *, void *); 218 void fdcattach_obio(struct device *, struct device *, void *); 219 220 int fdcattach(struct fdc_softc *, int); 221 222 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 223 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 224 225 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 226 fdcmatch_obio, fdcattach_obio, NULL, NULL); 227 228 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 229 230 /* 231 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 232 * we tell them apart. 233 */ 234 struct fd_type { 235 int sectrac; /* sectors per track */ 236 int heads; /* number of heads */ 237 int seccyl; /* sectors per cylinder */ 238 int secsize; /* size code for sectors */ 239 int datalen; /* data len when secsize = 0 */ 240 int steprate; /* step rate and head unload time */ 241 int gap1; /* gap len between sectors */ 242 int gap2; /* formatting gap */ 243 int cylinders; /* total num of cylinders */ 244 int size; /* size of disk in sectors */ 245 int step; /* steps per cylinder */ 246 int rate; /* transfer speed code */ 247 int fillbyte; /* format fill byte */ 248 int interleave; /* interleave factor (formatting) */ 249 const char *name; 250 }; 251 252 /* The order of entries in the following table is important -- BEWARE! */ 253 struct fd_type fd_types[] = { 254 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 255 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 256 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 257 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 258 }; 259 260 /* software state, per disk (with up to 4 disks per ctlr) */ 261 struct fd_softc { 262 struct device sc_dv; /* generic device info */ 263 struct disk sc_dk; /* generic disk info */ 264 265 struct fd_type *sc_deftype; /* default type descriptor */ 266 struct fd_type *sc_type; /* current type descriptor */ 267 268 struct callout sc_motoron_ch; 269 struct callout sc_motoroff_ch; 270 271 daddr_t sc_blkno; /* starting block number */ 272 int sc_bcount; /* byte count left */ 273 int sc_skip; /* bytes already transferred */ 274 int sc_nblks; /* number of blocks currently transferring */ 275 int sc_nbytes; /* number of bytes currently transferring */ 276 277 int sc_drive; /* physical unit number */ 278 int sc_flags; 279 #define FD_OPEN 0x01 /* it's open */ 280 #define FD_MOTOR 0x02 /* motor should be on */ 281 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 282 int sc_cylin; /* where we think the head is */ 283 int sc_opts; /* user-set options */ 284 285 void *sc_sdhook; /* shutdownhook cookie */ 286 287 TAILQ_ENTRY(fd_softc) sc_drivechain; 288 int sc_ops; /* I/O ops since last switch */ 289 struct bufq_state *sc_q;/* pending I/O requests */ 290 int sc_active; /* number of active I/O requests */ 291 }; 292 293 /* floppy driver configuration */ 294 int fdmatch(struct device *, struct cfdata *, void *); 295 void fdattach(struct device *, struct device *, void *); 296 297 CFATTACH_DECL(fd, sizeof(struct fd_softc), 298 fdmatch, fdattach, NULL, NULL); 299 300 extern struct cfdriver fd_cd; 301 302 dev_type_open(fdopen); 303 dev_type_close(fdclose); 304 dev_type_read(fdread); 305 dev_type_write(fdwrite); 306 dev_type_ioctl(fdioctl); 307 dev_type_strategy(fdstrategy); 308 309 const struct bdevsw fd_bdevsw = { 310 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 311 }; 312 313 const struct cdevsw fd_cdevsw = { 314 fdopen, fdclose, fdread, fdwrite, fdioctl, 315 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 316 }; 317 318 void fdgetdisklabel(dev_t); 319 int fd_get_parms(struct fd_softc *); 320 void fdstart(struct fd_softc *); 321 int fdprint(void *, const char *); 322 323 struct dkdriver fddkdriver = { fdstrategy }; 324 325 struct fd_type *fd_nvtotype(char *, int, int); 326 void fd_set_motor(struct fdc_softc *); 327 void fd_motor_off(void *); 328 void fd_motor_on(void *); 329 int fdcresult(struct fdc_softc *); 330 int fdc_wrfifo(struct fdc_softc *, uint8_t); 331 void fdcstart(struct fdc_softc *); 332 void fdcstatus(struct fdc_softc *, const char *); 333 void fdc_reset(struct fdc_softc *); 334 int fdc_diskchange(struct fdc_softc *); 335 void fdctimeout(void *); 336 void fdcpseudointr(void *); 337 int fdc_c_hwintr(void *); 338 void fdchwintr(void); 339 void fdcswintr(void *); 340 int fdcstate(struct fdc_softc *); 341 void fdcretry(struct fdc_softc *); 342 void fdfinish(struct fd_softc *, struct buf *); 343 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 344 void fd_do_eject(struct fd_softc *); 345 void fd_mountroot_hook(struct device *); 346 static int fdconf(struct fdc_softc *); 347 static void establish_chip_type( 348 struct fdc_softc *, 349 bus_space_tag_t, 350 bus_addr_t, 351 bus_size_t, 352 bus_space_handle_t); 353 354 #ifdef MEMORY_DISK_HOOKS 355 int fd_read_md_image(size_t *, void **); 356 #endif 357 358 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 359 360 int 361 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 362 { 363 struct mainbus_attach_args *ma = aux; 364 365 /* 366 * Floppy controller is on mainbus on sun4c. 367 */ 368 if (!CPU_ISSUN4C) 369 return (0); 370 371 /* sun4c PROMs call the controller "fd" */ 372 if (strcmp("fd", ma->ma_name) != 0) 373 return (0); 374 375 return (bus_space_probe(ma->ma_bustag, 376 ma->ma_paddr, 377 1, /* probe size */ 378 0, /* offset */ 379 0, /* flags */ 380 NULL, NULL)); 381 } 382 383 int 384 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 385 { 386 union obio_attach_args *uoba = aux; 387 struct sbus_attach_args *sa; 388 389 /* 390 * Floppy controller is on obio on sun4m. 391 */ 392 if (uoba->uoba_isobio4 != 0) 393 return (0); 394 395 sa = &uoba->uoba_sbus; 396 397 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 398 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 399 return (0); 400 401 return (bus_space_probe(sa->sa_bustag, 402 sbus_bus_addr(sa->sa_bustag, 403 sa->sa_slot, sa->sa_offset), 404 1, /* probe size */ 405 0, /* offset */ 406 0, /* flags */ 407 NULL, NULL)); 408 } 409 410 static void 411 establish_chip_type(struct fdc_softc *fdc, 412 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 413 bus_space_handle_t handle) 414 { 415 uint8_t v; 416 417 /* 418 * This hack from Chris Torek: apparently DOR really 419 * addresses MSR/DRS on a 82072. 420 * We used to rely on the VERSION command to tell the 421 * difference (which did not work). 422 */ 423 424 /* First, check the size of the register bank */ 425 if (size < 8) 426 /* It isn't a 82077 */ 427 return; 428 429 /* Then probe the DOR register offset */ 430 if (bus_space_probe(tag, addr, 431 1, /* probe size */ 432 FDREG77_DOR, /* offset */ 433 0, /* flags */ 434 NULL, NULL) == 0) { 435 436 /* It isn't a 82077 */ 437 return; 438 } 439 440 v = bus_space_read_1(tag, handle, FDREG77_DOR); 441 if (v == NE7_RQM) { 442 /* 443 * Value in DOR looks like it's really MSR 444 */ 445 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 446 v = bus_space_read_1(tag, handle, FDREG77_DOR); 447 if (v == NE7_RQM) { 448 /* 449 * The value in the DOR didn't stick; 450 * it isn't a 82077 451 */ 452 return; 453 } 454 } 455 456 fdc->sc_flags |= FDC_82077; 457 } 458 459 /* 460 * Arguments passed between fdcattach and fdprobe. 461 */ 462 struct fdc_attach_args { 463 int fa_drive; 464 struct fd_type *fa_deftype; 465 }; 466 467 /* 468 * Print the location of a disk drive (called just before attaching the 469 * the drive). If `fdc' is not NULL, the drive was found but was not 470 * in the system config file; print the drive name as well. 471 * Return QUIET (config_find ignores this if the device was configured) to 472 * avoid printing `fdN not configured' messages. 473 */ 474 int 475 fdprint(void *aux, const char *fdc) 476 { 477 register struct fdc_attach_args *fa = aux; 478 479 if (!fdc) 480 aprint_normal(" drive %d", fa->fa_drive); 481 return (QUIET); 482 } 483 484 /* 485 * Configure several parameters and features on the FDC. 486 * Return 0 on success. 487 */ 488 static int 489 fdconf(struct fdc_softc *fdc) 490 { 491 int vroom; 492 493 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 494 return (-1); 495 496 /* 497 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 498 * the PROM thinks is appropriate. 499 */ 500 if ((vroom = fdc->sc_status[7]) == 0) 501 vroom = 0x64; 502 503 /* Configure controller to use FIFO and Implied Seek */ 504 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 505 return (-1); 506 if (fdc_wrfifo(fdc, vroom) != 0) 507 return (-1); 508 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 509 return (-1); 510 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 511 return (-1); 512 /* No result phase for the NE7CMD_CFG command */ 513 514 if ((fdc->sc_flags & FDC_82077) != 0) { 515 /* Lock configuration across soft resets. */ 516 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 517 fdcresult(fdc) != 1) { 518 #ifdef DEBUG 519 printf("fdconf: CFGLOCK failed"); 520 #endif 521 return (-1); 522 } 523 } 524 525 return (0); 526 #if 0 527 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 528 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 529 if (fdc_debug) 530 printf("[version cmd]"); 531 } 532 #endif 533 } 534 535 void 536 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 537 { 538 struct fdc_softc *fdc = device_private(self); 539 struct mainbus_attach_args *ma = aux; 540 541 fdc->sc_bustag = ma->ma_bustag; 542 543 if (bus_space_map( 544 ma->ma_bustag, 545 ma->ma_paddr, 546 ma->ma_size, 547 BUS_SPACE_MAP_LINEAR, 548 &fdc->sc_handle) != 0) { 549 printf("%s: cannot map registers\n", self->dv_xname); 550 return; 551 } 552 553 establish_chip_type(fdc, 554 ma->ma_bustag, 555 ma->ma_paddr, 556 ma->ma_size, 557 fdc->sc_handle); 558 559 if (fdcattach(fdc, ma->ma_pri) != 0) 560 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 561 } 562 563 void 564 fdcattach_obio(struct device *parent, struct device *self, void *aux) 565 { 566 struct fdc_softc *fdc = device_private(self); 567 union obio_attach_args *uoba = aux; 568 struct sbus_attach_args *sa = &uoba->uoba_sbus; 569 570 if (sa->sa_nintr == 0) { 571 printf(": no interrupt line configured\n"); 572 return; 573 } 574 575 fdc->sc_bustag = sa->sa_bustag; 576 577 if (sbus_bus_map(sa->sa_bustag, 578 sa->sa_slot, sa->sa_offset, sa->sa_size, 579 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 580 printf("%s: cannot map control registers\n", 581 self->dv_xname); 582 return; 583 } 584 585 establish_chip_type(fdc, 586 sa->sa_bustag, 587 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 588 sa->sa_size, 589 fdc->sc_handle); 590 591 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 592 printf(": no drives attached\n"); 593 return; 594 } 595 596 if (fdcattach(fdc, sa->sa_pri) != 0) 597 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 598 } 599 600 int 601 fdcattach(struct fdc_softc *fdc, int pri) 602 { 603 struct fdc_attach_args fa; 604 int drive_attached; 605 char code; 606 607 callout_init(&fdc->sc_timo_ch, 0); 608 callout_init(&fdc->sc_intr_ch, 0); 609 610 fdc->sc_state = DEVIDLE; 611 fdc->sc_itask = FDC_ITASK_NONE; 612 fdc->sc_istatus = FDC_ISTATUS_NONE; 613 fdc->sc_flags |= FDC_EIS; 614 TAILQ_INIT(&fdc->sc_drives); 615 616 if ((fdc->sc_flags & FDC_82077) != 0) { 617 fdc->sc_reg_msr = FDREG77_MSR; 618 fdc->sc_reg_fifo = FDREG77_FIFO; 619 fdc->sc_reg_dor = FDREG77_DOR; 620 fdc->sc_reg_dir = FDREG77_DIR; 621 code = '7'; 622 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 623 } else { 624 fdc->sc_reg_msr = FDREG72_MSR; 625 fdc->sc_reg_fifo = FDREG72_FIFO; 626 fdc->sc_reg_dor = 0; 627 code = '2'; 628 } 629 630 /* 631 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 632 * Note: CFG_EFIFO is active-low, initial threshold value: 8 633 */ 634 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 635 if (fdconf(fdc) != 0) { 636 printf(": no drives attached\n"); 637 return (-1); 638 } 639 640 fdciop = &fdc->sc_io; 641 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 642 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 643 printf("\n%s: cannot register interrupt handler\n", 644 fdc->sc_dev.dv_xname); 645 return (-1); 646 } 647 648 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 649 if (fdc->sc_sicookie == NULL) { 650 printf("\n%s: cannot register soft interrupt handler\n", 651 fdc->sc_dev.dv_xname); 652 return (-1); 653 } 654 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 655 656 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 657 fdc->sc_dev.dv_xname, "intr"); 658 659 /* physical limit: four drives per controller. */ 660 drive_attached = 0; 661 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 662 fa.fa_deftype = NULL; /* unknown */ 663 fa.fa_deftype = &fd_types[0]; /* XXX */ 664 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 665 drive_attached = 1; 666 } 667 668 if (drive_attached == 0) { 669 /* XXX - dis-establish interrupts here */ 670 /* return (-1); */ 671 } 672 673 return (0); 674 } 675 676 int 677 fdmatch(struct device *parent, struct cfdata *match, void *aux) 678 { 679 struct fdc_softc *fdc = device_private(parent); 680 bus_space_tag_t t = fdc->sc_bustag; 681 bus_space_handle_t h = fdc->sc_handle; 682 struct fdc_attach_args *fa = aux; 683 int drive = fa->fa_drive; 684 int n, ok; 685 686 if (drive > 0) 687 /* XXX - for now, punt on more than one drive */ 688 return (0); 689 690 if ((fdc->sc_flags & FDC_82077) != 0) { 691 /* select drive and turn on motor */ 692 bus_space_write_1(t, h, fdc->sc_reg_dor, 693 drive | FDO_FRST | FDO_MOEN(drive)); 694 /* wait for motor to spin up */ 695 delay(250000); 696 } else { 697 auxregbisc(AUXIO4C_FDS, 0); 698 } 699 fdc->sc_nstat = 0; 700 fdc_wrfifo(fdc, NE7CMD_RECAL); 701 fdc_wrfifo(fdc, drive); 702 703 /* Wait for recalibration to complete */ 704 for (n = 0; n < 10000; n++) { 705 uint8_t v; 706 707 delay(1000); 708 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 709 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 710 /* wait a bit longer till device *really* is ready */ 711 delay(100000); 712 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 713 break; 714 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 715 /* 716 * Got `invalid command'; we interpret it 717 * to mean that the re-calibrate hasn't in 718 * fact finished yet 719 */ 720 continue; 721 break; 722 } 723 } 724 n = fdc->sc_nstat; 725 #ifdef FD_DEBUG 726 if (fdc_debug) { 727 int i; 728 printf("fdprobe: %d stati:", n); 729 for (i = 0; i < n; i++) 730 printf(" 0x%x", fdc->sc_status[i]); 731 printf("\n"); 732 } 733 #endif 734 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 735 736 /* turn off motor */ 737 if ((fdc->sc_flags & FDC_82077) != 0) { 738 /* deselect drive and turn motor off */ 739 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 740 } else { 741 auxregbisc(0, AUXIO4C_FDS); 742 } 743 744 return (ok); 745 } 746 747 /* 748 * Controller is working, and drive responded. Attach it. 749 */ 750 void 751 fdattach(struct device *parent, struct device *self, void *aux) 752 { 753 struct fdc_softc *fdc = device_private(parent); 754 struct fd_softc *fd = device_private(self); 755 struct fdc_attach_args *fa = aux; 756 struct fd_type *type = fa->fa_deftype; 757 int drive = fa->fa_drive; 758 759 callout_init(&fd->sc_motoron_ch, 0); 760 callout_init(&fd->sc_motoroff_ch, 0); 761 762 /* XXX Allow `flags' to override device type? */ 763 764 if (type) 765 printf(": %s %d cyl, %d head, %d sec\n", type->name, 766 type->cylinders, type->heads, type->sectrac); 767 else 768 printf(": density unknown\n"); 769 770 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 771 fd->sc_cylin = -1; 772 fd->sc_drive = drive; 773 fd->sc_deftype = type; 774 fdc->sc_fd[drive] = fd; 775 776 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 777 fdc_wrfifo(fdc, type->steprate); 778 /* XXX head load time == 6ms */ 779 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 780 781 /* 782 * Initialize and attach the disk structure. 783 */ 784 disk_init(&fd->sc_dk, fd->sc_dv.dv_xname, &fddkdriver); 785 disk_attach(&fd->sc_dk); 786 787 /* 788 * Establish a mountroot_hook anyway in case we booted 789 * with RB_ASKNAME and get selected as the boot device. 790 */ 791 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 792 793 /* Make sure the drive motor gets turned off at shutdown time. */ 794 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 795 } 796 797 inline struct fd_type * 798 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 799 { 800 int type = FDTYPE(dev); 801 802 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 803 return (NULL); 804 return (type ? &fd_types[type - 1] : fd->sc_deftype); 805 } 806 807 void 808 fdstrategy(struct buf *bp) 809 { 810 struct fd_softc *fd; 811 int unit = FDUNIT(bp->b_dev); 812 int sz; 813 int s; 814 815 /* Valid unit, controller, and request? */ 816 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 817 bp->b_blkno < 0 || 818 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 819 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 820 (bp->b_flags & B_FORMAT) == 0)) { 821 bp->b_error = EINVAL; 822 goto done; 823 } 824 825 /* If it's a null transfer, return immediately. */ 826 if (bp->b_bcount == 0) 827 goto done; 828 829 sz = howmany(bp->b_bcount, DEV_BSIZE); 830 831 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 832 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 833 - bp->b_blkno; 834 if (sz == 0) { 835 /* If exactly at end of disk, return EOF. */ 836 bp->b_resid = bp->b_bcount; 837 goto done; 838 } 839 if (sz < 0) { 840 /* If past end of disk, return EINVAL. */ 841 bp->b_error = EINVAL; 842 goto done; 843 } 844 /* Otherwise, truncate request. */ 845 bp->b_bcount = sz << DEV_BSHIFT; 846 } 847 848 bp->b_rawblkno = bp->b_blkno; 849 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 850 (FD_BSIZE(fd) * fd->sc_type->seccyl); 851 852 #ifdef FD_DEBUG 853 if (fdc_debug > 1) 854 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 855 (long long)bp->b_blkno, bp->b_bcount, 856 (long long)fd->sc_blkno, bp->b_cylinder); 857 #endif 858 859 /* Queue transfer on drive, activate drive and controller if idle. */ 860 s = splbio(); 861 BUFQ_PUT(fd->sc_q, bp); 862 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 863 if (fd->sc_active == 0) 864 fdstart(fd); 865 #ifdef DIAGNOSTIC 866 else { 867 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 868 if (fdc->sc_state == DEVIDLE) { 869 printf("fdstrategy: controller inactive\n"); 870 fdcstart(fdc); 871 } 872 } 873 #endif 874 splx(s); 875 return; 876 877 done: 878 /* Toss transfer; we're done early. */ 879 biodone(bp); 880 } 881 882 void 883 fdstart(struct fd_softc *fd) 884 { 885 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 886 int active = fdc->sc_drives.tqh_first != 0; 887 888 /* Link into controller queue. */ 889 fd->sc_active = 1; 890 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 891 892 /* If controller not already active, start it. */ 893 if (!active) 894 fdcstart(fdc); 895 } 896 897 void 898 fdfinish(struct fd_softc *fd, struct buf *bp) 899 { 900 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 901 902 /* 903 * Move this drive to the end of the queue to give others a `fair' 904 * chance. We only force a switch if N operations are completed while 905 * another drive is waiting to be serviced, since there is a long motor 906 * startup delay whenever we switch. 907 */ 908 (void)BUFQ_GET(fd->sc_q); 909 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 910 fd->sc_ops = 0; 911 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 912 if (BUFQ_PEEK(fd->sc_q) != NULL) { 913 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 914 } else 915 fd->sc_active = 0; 916 } 917 bp->b_resid = fd->sc_bcount; 918 fd->sc_skip = 0; 919 920 biodone(bp); 921 /* turn off motor 5s from now */ 922 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 923 fdc->sc_state = DEVIDLE; 924 } 925 926 void 927 fdc_reset(struct fdc_softc *fdc) 928 { 929 bus_space_tag_t t = fdc->sc_bustag; 930 bus_space_handle_t h = fdc->sc_handle; 931 932 if ((fdc->sc_flags & FDC_82077) != 0) { 933 bus_space_write_1(t, h, fdc->sc_reg_dor, 934 FDO_FDMAEN | FDO_MOEN(0)); 935 } 936 937 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 938 delay(10); 939 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 940 941 if ((fdc->sc_flags & FDC_82077) != 0) { 942 bus_space_write_1(t, h, fdc->sc_reg_dor, 943 FDO_FRST | FDO_FDMAEN | FDO_DS); 944 } 945 #ifdef FD_DEBUG 946 if (fdc_debug) 947 printf("fdc reset\n"); 948 #endif 949 } 950 951 void 952 fd_set_motor(struct fdc_softc *fdc) 953 { 954 struct fd_softc *fd; 955 u_char status; 956 int n; 957 958 if ((fdc->sc_flags & FDC_82077) != 0) { 959 status = FDO_FRST | FDO_FDMAEN; 960 if ((fd = fdc->sc_drives.tqh_first) != NULL) 961 status |= fd->sc_drive; 962 963 for (n = 0; n < 4; n++) 964 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 965 status |= FDO_MOEN(n); 966 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 967 fdc->sc_reg_dor, status); 968 } else { 969 970 for (n = 0; n < 4; n++) { 971 if ((fd = fdc->sc_fd[n]) != NULL && 972 (fd->sc_flags & FD_MOTOR) != 0) { 973 auxregbisc(AUXIO4C_FDS, 0); 974 return; 975 } 976 } 977 auxregbisc(0, AUXIO4C_FDS); 978 } 979 } 980 981 void 982 fd_motor_off(void *arg) 983 { 984 struct fd_softc *fd = arg; 985 int s; 986 987 s = splbio(); 988 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 989 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 990 splx(s); 991 } 992 993 void 994 fd_motor_on(void *arg) 995 { 996 struct fd_softc *fd = arg; 997 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 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(struct fdc_softc *fdc) 1014 { 1015 bus_space_tag_t t = fdc->sc_bustag; 1016 bus_space_handle_t h = fdc->sc_handle; 1017 int j, n = 0; 1018 1019 for (j = 10000; j; j--) { 1020 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1021 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1022 if (v == NE7_RQM) 1023 return (fdc->sc_nstat = n); 1024 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1025 if (n >= sizeof(fdc->sc_status)) { 1026 log(LOG_ERR, "fdcresult: overrun\n"); 1027 return (-1); 1028 } 1029 fdc->sc_status[n++] = 1030 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1031 } else 1032 delay(1); 1033 } 1034 1035 log(LOG_ERR, "fdcresult: timeout\n"); 1036 return (fdc->sc_nstat = -1); 1037 } 1038 1039 /* 1040 * Write a command byte to the FDC. 1041 * Returns 0 on success; -1 on failure (i.e. timeout) 1042 */ 1043 int 1044 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1045 { 1046 bus_space_tag_t t = fdc->sc_bustag; 1047 bus_space_handle_t h = fdc->sc_handle; 1048 int i; 1049 1050 for (i = 100000; i-- > 0;) { 1051 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1052 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1053 /* The chip is ready */ 1054 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1055 return (0); 1056 } 1057 delay(1); 1058 } 1059 return (-1); 1060 } 1061 1062 int 1063 fdc_diskchange(struct fdc_softc *fdc) 1064 { 1065 1066 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1067 bus_space_tag_t t = fdc->sc_bustag; 1068 bus_space_handle_t h = fdc->sc_handle; 1069 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1070 return ((v & FDI_DCHG) != 0); 1071 } else if (CPU_ISSUN4C) { 1072 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1073 } 1074 return (0); 1075 } 1076 1077 int 1078 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1079 { 1080 int unit, pmask; 1081 struct fd_softc *fd; 1082 struct fd_type *type; 1083 1084 unit = FDUNIT(dev); 1085 fd = device_lookup_private(&fd_cd, unit); 1086 if (fd == NULL) 1087 return (ENXIO); 1088 type = fd_dev_to_type(fd, dev); 1089 if (type == NULL) 1090 return (ENXIO); 1091 1092 if ((fd->sc_flags & FD_OPEN) != 0 && 1093 fd->sc_type != type) 1094 return (EBUSY); 1095 1096 fd->sc_type = type; 1097 fd->sc_cylin = -1; 1098 fd->sc_flags |= FD_OPEN; 1099 1100 /* 1101 * Only update the disklabel if we're not open anywhere else. 1102 */ 1103 if (fd->sc_dk.dk_openmask == 0) 1104 fdgetdisklabel(dev); 1105 1106 pmask = (1 << DISKPART(dev)); 1107 1108 switch (fmt) { 1109 case S_IFCHR: 1110 fd->sc_dk.dk_copenmask |= pmask; 1111 break; 1112 1113 case S_IFBLK: 1114 fd->sc_dk.dk_bopenmask |= pmask; 1115 break; 1116 } 1117 fd->sc_dk.dk_openmask = 1118 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1119 1120 return (0); 1121 } 1122 1123 int 1124 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1125 { 1126 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1127 int pmask = (1 << DISKPART(dev)); 1128 1129 fd->sc_flags &= ~FD_OPEN; 1130 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1131 1132 switch (fmt) { 1133 case S_IFCHR: 1134 fd->sc_dk.dk_copenmask &= ~pmask; 1135 break; 1136 1137 case S_IFBLK: 1138 fd->sc_dk.dk_bopenmask &= ~pmask; 1139 break; 1140 } 1141 fd->sc_dk.dk_openmask = 1142 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1143 1144 return (0); 1145 } 1146 1147 int 1148 fdread(dev_t dev, struct uio *uio, int flag) 1149 { 1150 1151 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1152 } 1153 1154 int 1155 fdwrite(dev_t dev, struct uio *uio, int flag) 1156 { 1157 1158 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1159 } 1160 1161 void 1162 fdcstart(struct fdc_softc *fdc) 1163 { 1164 1165 #ifdef DIAGNOSTIC 1166 /* only got here if controller's drive queue was inactive; should 1167 be in idle state */ 1168 if (fdc->sc_state != DEVIDLE) { 1169 printf("fdcstart: not idle\n"); 1170 return; 1171 } 1172 #endif 1173 (void) fdcstate(fdc); 1174 } 1175 1176 void 1177 fdcstatus(struct fdc_softc *fdc, const char *s) 1178 { 1179 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1180 int n; 1181 char bits[64]; 1182 1183 /* Just print last status */ 1184 n = fdc->sc_nstat; 1185 1186 #if 0 1187 /* 1188 * A 82072 seems to return <invalid command> on 1189 * gratuitous Sense Interrupt commands. 1190 */ 1191 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1192 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1193 (void) fdcresult(fdc); 1194 n = 2; 1195 } 1196 #endif 1197 1198 printf("%s: %s: state %d", 1199 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1200 1201 switch (n) { 1202 case 0: 1203 printf("\n"); 1204 break; 1205 case 2: 1206 printf(" (st0 %s cyl %d)\n", 1207 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1208 bits, sizeof(bits)), fdc->sc_status[1]); 1209 break; 1210 case 7: 1211 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1212 NE7_ST0BITS, bits, sizeof(bits))); 1213 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1214 NE7_ST1BITS, bits, sizeof(bits))); 1215 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1216 NE7_ST2BITS, bits, sizeof(bits))); 1217 printf(" cyl %d head %d sec %d)\n", 1218 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1219 break; 1220 #ifdef DIAGNOSTIC 1221 default: 1222 printf(" fdcstatus: weird size: %d\n", n); 1223 break; 1224 #endif 1225 } 1226 } 1227 1228 void 1229 fdctimeout(void *arg) 1230 { 1231 struct fdc_softc *fdc = arg; 1232 struct fd_softc *fd; 1233 int s; 1234 1235 s = splbio(); 1236 fd = fdc->sc_drives.tqh_first; 1237 if (fd == NULL) { 1238 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1239 fdc->sc_dev.dv_xname, 1240 fdc->sc_state, fdc->sc_istatus); 1241 fdc->sc_state = DEVIDLE; 1242 goto out; 1243 } 1244 1245 if (BUFQ_PEEK(fd->sc_q) != NULL) 1246 fdc->sc_state++; 1247 else 1248 fdc->sc_state = DEVIDLE; 1249 1250 (void) fdcstate(fdc); 1251 out: 1252 splx(s); 1253 1254 } 1255 1256 void 1257 fdcpseudointr(void *arg) 1258 { 1259 struct fdc_softc *fdc = arg; 1260 int s; 1261 1262 /* Just ensure it has the right spl. */ 1263 s = splbio(); 1264 (void) fdcstate(fdc); 1265 splx(s); 1266 } 1267 1268 1269 /* 1270 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1271 * handler is available. Unfortunately, we have no reliable way to 1272 * determine that the interrupt really came from the floppy controller; 1273 * just hope that the other devices that share this interrupt level 1274 * can do better.. 1275 */ 1276 int 1277 fdc_c_hwintr(void *arg) 1278 { 1279 struct fdc_softc *fdc = arg; 1280 bus_space_tag_t t = fdc->sc_bustag; 1281 bus_space_handle_t h = fdc->sc_handle; 1282 1283 switch (fdc->sc_itask) { 1284 case FDC_ITASK_NONE: 1285 return (0); 1286 case FDC_ITASK_SENSEI: 1287 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1288 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1289 else 1290 fdc->sc_istatus = FDC_ISTATUS_DONE; 1291 softint_schedule(fdc->sc_sicookie); 1292 return (1); 1293 case FDC_ITASK_RESULT: 1294 if (fdcresult(fdc) == -1) 1295 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1296 else 1297 fdc->sc_istatus = FDC_ISTATUS_DONE; 1298 softint_schedule(fdc->sc_sicookie); 1299 return (1); 1300 case FDC_ITASK_DMA: 1301 /* Proceed with pseudo-DMA below */ 1302 break; 1303 default: 1304 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1305 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1306 softint_schedule(fdc->sc_sicookie); 1307 return (1); 1308 } 1309 1310 /* 1311 * Pseudo DMA in progress 1312 */ 1313 for (;;) { 1314 uint8_t msr; 1315 1316 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1317 1318 if ((msr & NE7_RQM) == 0) 1319 /* That's all this round */ 1320 break; 1321 1322 if ((msr & NE7_NDM) == 0) { 1323 /* Execution phase finished, get result. */ 1324 fdcresult(fdc); 1325 fdc->sc_istatus = FDC_ISTATUS_DONE; 1326 softint_schedule(fdc->sc_sicookie); 1327 break; 1328 } 1329 1330 if (fdc->sc_tc == 0) 1331 /* For some reason the controller wants to transfer 1332 more data then what we want to transfer. */ 1333 panic("fdc: overrun"); 1334 1335 /* Another byte can be transferred */ 1336 if ((msr & NE7_DIO) != 0) 1337 *fdc->sc_data = 1338 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1339 else 1340 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1341 *fdc->sc_data); 1342 1343 fdc->sc_data++; 1344 if (--fdc->sc_tc == 0) { 1345 FTC_FLIP; 1346 break; 1347 } 1348 } 1349 return (1); 1350 } 1351 1352 void 1353 fdcswintr(void *arg) 1354 { 1355 struct fdc_softc *fdc = arg; 1356 1357 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1358 /* This (software) interrupt is not for us */ 1359 return; 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 fdcstate(fdc); 1371 return; 1372 } 1373 1374 int 1375 fdcstate(struct fdc_softc *fdc) 1376 { 1377 1378 #define st0 fdc->sc_status[0] 1379 #define st1 fdc->sc_status[1] 1380 #define cyl fdc->sc_status[1] 1381 #define FDC_WRFIFO(fdc, c) do { \ 1382 if (fdc_wrfifo(fdc, (c))) { \ 1383 goto xxx; \ 1384 } \ 1385 } while(0) 1386 1387 struct fd_softc *fd; 1388 struct buf *bp; 1389 int read, head, sec, nblks; 1390 struct fd_type *type; 1391 struct ne7_fd_formb *finfo = NULL; 1392 1393 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1394 /* Prevent loop if the reset sequence produces errors */ 1395 if (fdc->sc_state != RESETCOMPLETE && 1396 fdc->sc_state != RECALWAIT && 1397 fdc->sc_state != RECALCOMPLETE) 1398 fdc->sc_state = DORESET; 1399 } 1400 1401 /* Clear I task/status field */ 1402 fdc->sc_istatus = FDC_ISTATUS_NONE; 1403 fdc->sc_itask = FDC_ITASK_NONE; 1404 1405 loop: 1406 /* Is there a drive for the controller to do a transfer with? */ 1407 fd = fdc->sc_drives.tqh_first; 1408 if (fd == NULL) { 1409 fdc->sc_state = DEVIDLE; 1410 return (0); 1411 } 1412 1413 /* Is there a transfer to this drive? If not, deactivate drive. */ 1414 bp = BUFQ_PEEK(fd->sc_q); 1415 if (bp == NULL) { 1416 fd->sc_ops = 0; 1417 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1418 fd->sc_active = 0; 1419 goto loop; 1420 } 1421 1422 if (bp->b_flags & B_FORMAT) 1423 finfo = (struct ne7_fd_formb *)bp->b_data; 1424 1425 switch (fdc->sc_state) { 1426 case DEVIDLE: 1427 fdc->sc_errors = 0; 1428 fd->sc_skip = 0; 1429 fd->sc_bcount = bp->b_bcount; 1430 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1431 callout_stop(&fd->sc_motoroff_ch); 1432 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1433 fdc->sc_state = MOTORWAIT; 1434 return (1); 1435 } 1436 if ((fd->sc_flags & FD_MOTOR) == 0) { 1437 /* Turn on the motor, being careful about pairing. */ 1438 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1439 if (ofd && ofd->sc_flags & FD_MOTOR) { 1440 callout_stop(&ofd->sc_motoroff_ch); 1441 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1442 } 1443 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1444 fd_set_motor(fdc); 1445 fdc->sc_state = MOTORWAIT; 1446 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1447 /* Allow .25s for motor to stabilize. */ 1448 callout_reset(&fd->sc_motoron_ch, hz / 4, 1449 fd_motor_on, fd); 1450 } else { 1451 fd->sc_flags &= ~FD_MOTOR_WAIT; 1452 goto loop; 1453 } 1454 return (1); 1455 } 1456 /* Make sure the right drive is selected. */ 1457 fd_set_motor(fdc); 1458 1459 if (fdc_diskchange(fdc)) 1460 goto dodskchg; 1461 1462 /*FALLTHROUGH*/ 1463 case DOSEEK: 1464 doseek: 1465 if ((fdc->sc_flags & FDC_EIS) && 1466 (bp->b_flags & B_FORMAT) == 0) { 1467 fd->sc_cylin = bp->b_cylinder; 1468 /* We use implied seek */ 1469 goto doio; 1470 } 1471 1472 if (fd->sc_cylin == bp->b_cylinder) 1473 goto doio; 1474 1475 fd->sc_cylin = -1; 1476 fdc->sc_state = SEEKWAIT; 1477 fdc->sc_nstat = 0; 1478 1479 iostat_seek(fd->sc_dk.dk_stats); 1480 1481 disk_busy(&fd->sc_dk); 1482 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1483 1484 /* specify command */ 1485 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1486 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1487 /* XXX head load time == 6ms */ 1488 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1489 1490 fdc->sc_itask = FDC_ITASK_SENSEI; 1491 /* seek function */ 1492 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1493 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1494 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1495 return (1); 1496 1497 case DODSKCHG: 1498 dodskchg: 1499 /* 1500 * Disk change: force a seek operation by going to cyl 1 1501 * followed by a recalibrate. 1502 */ 1503 disk_busy(&fd->sc_dk); 1504 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1505 fd->sc_cylin = -1; 1506 fdc->sc_nstat = 0; 1507 fdc->sc_state = DSKCHGWAIT; 1508 1509 fdc->sc_itask = FDC_ITASK_SENSEI; 1510 /* seek function */ 1511 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1512 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1513 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1514 return (1); 1515 1516 case DSKCHGWAIT: 1517 callout_stop(&fdc->sc_timo_ch); 1518 disk_unbusy(&fd->sc_dk, 0, 0); 1519 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1520 cyl != 1 * fd->sc_type->step) { 1521 fdcstatus(fdc, "dskchg seek failed"); 1522 fdc->sc_state = DORESET; 1523 } else 1524 fdc->sc_state = DORECAL; 1525 1526 if (fdc_diskchange(fdc)) { 1527 printf("%s: cannot clear disk change status\n", 1528 fdc->sc_dev.dv_xname); 1529 fdc->sc_state = DORESET; 1530 } 1531 goto loop; 1532 1533 case DOIO: 1534 doio: 1535 if (finfo != NULL) 1536 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1537 (char *)finfo; 1538 type = fd->sc_type; 1539 sec = fd->sc_blkno % type->seccyl; 1540 nblks = type->seccyl - sec; 1541 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1542 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1543 fd->sc_nblks = nblks; 1544 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1545 head = sec / type->sectrac; 1546 sec -= head * type->sectrac; 1547 #ifdef DIAGNOSTIC 1548 {int block; 1549 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1550 if (block != fd->sc_blkno) { 1551 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1552 #ifdef DDB 1553 Debugger(); 1554 #endif 1555 }} 1556 #endif 1557 read = bp->b_flags & B_READ; 1558 1559 /* Setup for pseudo DMA */ 1560 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1561 fdc->sc_tc = fd->sc_nbytes; 1562 1563 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1564 fdc->sc_reg_drs, type->rate); 1565 #ifdef FD_DEBUG 1566 if (fdc_debug > 1) 1567 printf("fdcstate: doio: %s drive %d " 1568 "track %d head %d sec %d nblks %d\n", 1569 finfo ? "format" : 1570 (read ? "read" : "write"), 1571 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1572 #endif 1573 fdc->sc_state = IOCOMPLETE; 1574 fdc->sc_itask = FDC_ITASK_DMA; 1575 fdc->sc_nstat = 0; 1576 1577 disk_busy(&fd->sc_dk); 1578 1579 /* allow 3 seconds for operation */ 1580 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1581 1582 if (finfo != NULL) { 1583 /* formatting */ 1584 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1585 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1586 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1587 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1588 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1589 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1590 } else { 1591 if (read) 1592 FDC_WRFIFO(fdc, NE7CMD_READ); 1593 else 1594 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1595 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1596 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1597 FDC_WRFIFO(fdc, head); 1598 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1599 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1600 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1601 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1602 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1603 } 1604 1605 return (1); /* will return later */ 1606 1607 case SEEKWAIT: 1608 callout_stop(&fdc->sc_timo_ch); 1609 fdc->sc_state = SEEKCOMPLETE; 1610 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1611 /* allow 1/50 second for heads to settle */ 1612 callout_reset(&fdc->sc_intr_ch, hz / 50, 1613 fdcpseudointr, fdc); 1614 return (1); /* will return later */ 1615 } 1616 /*FALLTHROUGH*/ 1617 case SEEKCOMPLETE: 1618 /* no data on seek */ 1619 disk_unbusy(&fd->sc_dk, 0, 0); 1620 1621 /* Make sure seek really happened. */ 1622 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1623 cyl != bp->b_cylinder * fd->sc_type->step) { 1624 #ifdef FD_DEBUG 1625 if (fdc_debug) 1626 fdcstatus(fdc, "seek failed"); 1627 #endif 1628 fdcretry(fdc); 1629 goto loop; 1630 } 1631 fd->sc_cylin = bp->b_cylinder; 1632 goto doio; 1633 1634 case IOTIMEDOUT: 1635 /* 1636 * Try to abort the I/O operation without resetting 1637 * the chip first. Poke TC and arrange to pick up 1638 * the timed out I/O command's status. 1639 */ 1640 fdc->sc_itask = FDC_ITASK_RESULT; 1641 fdc->sc_state = IOCLEANUPWAIT; 1642 fdc->sc_nstat = 0; 1643 /* 1/10 second should be enough */ 1644 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1645 FTC_FLIP; 1646 return (1); 1647 1648 case IOCLEANUPTIMEDOUT: 1649 case SEEKTIMEDOUT: 1650 case RECALTIMEDOUT: 1651 case RESETTIMEDOUT: 1652 case DSKCHGTIMEDOUT: 1653 fdcstatus(fdc, "timeout"); 1654 1655 /* All other timeouts always roll through to a chip reset */ 1656 fdcretry(fdc); 1657 1658 /* Force reset, no matter what fdcretry() says */ 1659 fdc->sc_state = DORESET; 1660 goto loop; 1661 1662 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1663 callout_stop(&fdc->sc_timo_ch); 1664 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1665 (bp->b_flags & B_READ)); 1666 fdcretry(fdc); 1667 goto loop; 1668 1669 case IOCOMPLETE: /* IO DONE, post-analyze */ 1670 callout_stop(&fdc->sc_timo_ch); 1671 1672 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1673 (bp->b_flags & B_READ)); 1674 1675 if (fdc->sc_nstat != 7 || st1 != 0 || 1676 ((st0 & 0xf8) != 0 && 1677 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1678 #ifdef FD_DEBUG 1679 if (fdc_debug) { 1680 fdcstatus(fdc, 1681 bp->b_flags & B_READ 1682 ? "read failed" : "write failed"); 1683 printf("blkno %lld nblks %d nstat %d tc %d\n", 1684 (long long)fd->sc_blkno, fd->sc_nblks, 1685 fdc->sc_nstat, fdc->sc_tc); 1686 } 1687 #endif 1688 if (fdc->sc_nstat == 7 && 1689 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1690 1691 /* 1692 * Silently retry overruns if no other 1693 * error bit is set. Adjust threshold. 1694 */ 1695 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1696 if (thr < 15) { 1697 thr++; 1698 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1699 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1700 #ifdef FD_DEBUG 1701 if (fdc_debug) 1702 printf("fdc: %d -> threshold\n", thr); 1703 #endif 1704 fdconf(fdc); 1705 fdc->sc_overruns = 0; 1706 } 1707 if (++fdc->sc_overruns < 3) { 1708 fdc->sc_state = DOIO; 1709 goto loop; 1710 } 1711 } 1712 fdcretry(fdc); 1713 goto loop; 1714 } 1715 if (fdc->sc_errors) { 1716 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1717 fd->sc_skip / FD_BSIZE(fd), 1718 (struct disklabel *)NULL); 1719 printf("\n"); 1720 fdc->sc_errors = 0; 1721 } else { 1722 if (--fdc->sc_overruns < -20) { 1723 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1724 if (thr > 0) { 1725 thr--; 1726 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1727 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1728 #ifdef FD_DEBUG 1729 if (fdc_debug) 1730 printf("fdc: %d -> threshold\n", thr); 1731 #endif 1732 fdconf(fdc); 1733 } 1734 fdc->sc_overruns = 0; 1735 } 1736 } 1737 fd->sc_blkno += fd->sc_nblks; 1738 fd->sc_skip += fd->sc_nbytes; 1739 fd->sc_bcount -= fd->sc_nbytes; 1740 if (finfo == NULL && fd->sc_bcount > 0) { 1741 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1742 goto doseek; 1743 } 1744 fdfinish(fd, bp); 1745 goto loop; 1746 1747 case DORESET: 1748 /* try a reset, keep motor on */ 1749 fd_set_motor(fdc); 1750 delay(100); 1751 fdc->sc_nstat = 0; 1752 fdc->sc_itask = FDC_ITASK_SENSEI; 1753 fdc->sc_state = RESETCOMPLETE; 1754 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1755 fdc_reset(fdc); 1756 return (1); /* will return later */ 1757 1758 case RESETCOMPLETE: 1759 callout_stop(&fdc->sc_timo_ch); 1760 fdconf(fdc); 1761 1762 /* FALLTHROUGH */ 1763 case DORECAL: 1764 fdc->sc_state = RECALWAIT; 1765 fdc->sc_itask = FDC_ITASK_SENSEI; 1766 fdc->sc_nstat = 0; 1767 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1768 /* recalibrate function */ 1769 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1770 FDC_WRFIFO(fdc, fd->sc_drive); 1771 return (1); /* will return later */ 1772 1773 case RECALWAIT: 1774 callout_stop(&fdc->sc_timo_ch); 1775 fdc->sc_state = RECALCOMPLETE; 1776 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1777 /* allow 1/30 second for heads to settle */ 1778 callout_reset(&fdc->sc_intr_ch, hz / 30, 1779 fdcpseudointr, fdc); 1780 return (1); /* will return later */ 1781 } 1782 1783 case RECALCOMPLETE: 1784 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1785 #ifdef FD_DEBUG 1786 if (fdc_debug) 1787 fdcstatus(fdc, "recalibrate failed"); 1788 #endif 1789 fdcretry(fdc); 1790 goto loop; 1791 } 1792 fd->sc_cylin = 0; 1793 goto doseek; 1794 1795 case MOTORWAIT: 1796 if (fd->sc_flags & FD_MOTOR_WAIT) 1797 return (1); /* time's not up yet */ 1798 goto doseek; 1799 1800 default: 1801 fdcstatus(fdc, "stray interrupt"); 1802 return (1); 1803 } 1804 #ifdef DIAGNOSTIC 1805 panic("fdcintr: impossible"); 1806 #endif 1807 1808 xxx: 1809 /* 1810 * We get here if the chip locks up in FDC_WRFIFO() 1811 * Cancel any operation and schedule a reset 1812 */ 1813 callout_stop(&fdc->sc_timo_ch); 1814 fdcretry(fdc); 1815 (fdc)->sc_state = DORESET; 1816 goto loop; 1817 1818 #undef st0 1819 #undef st1 1820 #undef cyl 1821 } 1822 1823 void 1824 fdcretry(struct fdc_softc *fdc) 1825 { 1826 struct fd_softc *fd; 1827 struct buf *bp; 1828 int error = EIO; 1829 1830 fd = fdc->sc_drives.tqh_first; 1831 bp = BUFQ_PEEK(fd->sc_q); 1832 1833 fdc->sc_overruns = 0; 1834 if (fd->sc_opts & FDOPT_NORETRY) 1835 goto fail; 1836 1837 switch (fdc->sc_errors) { 1838 case 0: 1839 if (fdc->sc_nstat == 7 && 1840 (fdc->sc_status[0] & 0xd8) == 0x40 && 1841 (fdc->sc_status[1] & 0x2) == 0x2) { 1842 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1843 error = EROFS; 1844 goto failsilent; 1845 } 1846 /* try again */ 1847 fdc->sc_state = 1848 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1849 break; 1850 1851 case 1: case 2: case 3: 1852 /* didn't work; try recalibrating */ 1853 fdc->sc_state = DORECAL; 1854 break; 1855 1856 case 4: 1857 if (fdc->sc_nstat == 7 && 1858 fdc->sc_status[0] == 0 && 1859 fdc->sc_status[1] == 0 && 1860 fdc->sc_status[2] == 0) { 1861 /* 1862 * We've retried a few times and we've got 1863 * valid status and all three status bytes 1864 * are zero. Assume this condition is the 1865 * result of no disk loaded into the drive. 1866 */ 1867 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1868 error = ENODEV; 1869 goto failsilent; 1870 } 1871 1872 /* still no go; reset the bastard */ 1873 fdc->sc_state = DORESET; 1874 break; 1875 1876 default: 1877 fail: 1878 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1879 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1880 fd->sc_skip / FD_BSIZE(fd), 1881 (struct disklabel *)NULL); 1882 printf("\n"); 1883 fdcstatus(fdc, "controller status"); 1884 } 1885 1886 failsilent: 1887 bp->b_error = error; 1888 fdfinish(fd, bp); 1889 } 1890 fdc->sc_errors++; 1891 } 1892 1893 int 1894 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1895 { 1896 struct fd_softc *fd; 1897 struct fdc_softc *fdc; 1898 struct fdformat_parms *form_parms; 1899 struct fdformat_cmd *form_cmd; 1900 struct ne7_fd_formb *fd_formb; 1901 int il[FD_MAX_NSEC + 1]; 1902 int unit; 1903 int i, j; 1904 int error; 1905 1906 unit = FDUNIT(dev); 1907 if (unit >= fd_cd.cd_ndevs) 1908 return (ENXIO); 1909 1910 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1911 fdc = device_private(device_parent(&fd->sc_dv)); 1912 1913 switch (cmd) { 1914 case DIOCGDINFO: 1915 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1916 return 0; 1917 1918 case DIOCWLABEL: 1919 if ((flag & FWRITE) == 0) 1920 return EBADF; 1921 /* XXX do something */ 1922 return (0); 1923 1924 case DIOCWDINFO: 1925 if ((flag & FWRITE) == 0) 1926 return (EBADF); 1927 1928 error = setdisklabel(fd->sc_dk.dk_label, 1929 (struct disklabel *)addr, 0, 1930 fd->sc_dk.dk_cpulabel); 1931 if (error) 1932 return (error); 1933 1934 error = writedisklabel(dev, fdstrategy, 1935 fd->sc_dk.dk_label, 1936 fd->sc_dk.dk_cpulabel); 1937 return (error); 1938 1939 case DIOCLOCK: 1940 /* 1941 * Nothing to do here, really. 1942 */ 1943 return (0); 1944 1945 case DIOCEJECT: 1946 if (*(int *)addr == 0) { 1947 int part = DISKPART(dev); 1948 /* 1949 * Don't force eject: check that we are the only 1950 * partition open. If so, unlock it. 1951 */ 1952 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1953 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1954 fd->sc_dk.dk_openmask) { 1955 return (EBUSY); 1956 } 1957 } 1958 /* FALLTHROUGH */ 1959 case ODIOCEJECT: 1960 fd_do_eject(fd); 1961 return (0); 1962 1963 case FDIOCGETFORMAT: 1964 form_parms = (struct fdformat_parms *)addr; 1965 form_parms->fdformat_version = FDFORMAT_VERSION; 1966 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1967 form_parms->ncyl = fd->sc_type->cylinders; 1968 form_parms->nspt = fd->sc_type->sectrac; 1969 form_parms->ntrk = fd->sc_type->heads; 1970 form_parms->stepspercyl = fd->sc_type->step; 1971 form_parms->gaplen = fd->sc_type->gap2; 1972 form_parms->fillbyte = fd->sc_type->fillbyte; 1973 form_parms->interleave = fd->sc_type->interleave; 1974 switch (fd->sc_type->rate) { 1975 case FDC_500KBPS: 1976 form_parms->xfer_rate = 500 * 1024; 1977 break; 1978 case FDC_300KBPS: 1979 form_parms->xfer_rate = 300 * 1024; 1980 break; 1981 case FDC_250KBPS: 1982 form_parms->xfer_rate = 250 * 1024; 1983 break; 1984 default: 1985 return (EINVAL); 1986 } 1987 return (0); 1988 1989 case FDIOCSETFORMAT: 1990 if ((flag & FWRITE) == 0) 1991 return (EBADF); /* must be opened for writing */ 1992 1993 form_parms = (struct fdformat_parms *)addr; 1994 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1995 return (EINVAL);/* wrong version of formatting prog */ 1996 1997 i = form_parms->nbps >> 7; 1998 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1999 i & ~(1 << (ffs(i)-1))) 2000 /* not a power-of-two multiple of 128 */ 2001 return (EINVAL); 2002 2003 switch (form_parms->xfer_rate) { 2004 case 500 * 1024: 2005 fd->sc_type->rate = FDC_500KBPS; 2006 break; 2007 case 300 * 1024: 2008 fd->sc_type->rate = FDC_300KBPS; 2009 break; 2010 case 250 * 1024: 2011 fd->sc_type->rate = FDC_250KBPS; 2012 break; 2013 default: 2014 return (EINVAL); 2015 } 2016 2017 if (form_parms->nspt > FD_MAX_NSEC || 2018 form_parms->fillbyte > 0xff || 2019 form_parms->interleave > 0xff) 2020 return EINVAL; 2021 fd->sc_type->sectrac = form_parms->nspt; 2022 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2023 return EINVAL; 2024 fd->sc_type->heads = form_parms->ntrk; 2025 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2026 fd->sc_type->secsize = ffs(i)-1; 2027 fd->sc_type->gap2 = form_parms->gaplen; 2028 fd->sc_type->cylinders = form_parms->ncyl; 2029 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2030 form_parms->nbps / DEV_BSIZE; 2031 fd->sc_type->step = form_parms->stepspercyl; 2032 fd->sc_type->fillbyte = form_parms->fillbyte; 2033 fd->sc_type->interleave = form_parms->interleave; 2034 return (0); 2035 2036 case FDIOCFORMAT_TRACK: 2037 if((flag & FWRITE) == 0) 2038 /* must be opened for writing */ 2039 return (EBADF); 2040 form_cmd = (struct fdformat_cmd *)addr; 2041 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2042 /* wrong version of formatting prog */ 2043 return (EINVAL); 2044 2045 if (form_cmd->head >= fd->sc_type->heads || 2046 form_cmd->cylinder >= fd->sc_type->cylinders) { 2047 return (EINVAL); 2048 } 2049 2050 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2051 M_TEMP, M_NOWAIT); 2052 if (fd_formb == 0) 2053 return (ENOMEM); 2054 2055 fd_formb->head = form_cmd->head; 2056 fd_formb->cyl = form_cmd->cylinder; 2057 fd_formb->transfer_rate = fd->sc_type->rate; 2058 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2059 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2060 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2061 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2062 2063 bzero(il, sizeof il); 2064 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2065 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2066 j++; 2067 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2068 j += fd->sc_type->interleave; 2069 } 2070 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2071 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2072 fd_formb->fd_formb_headno(i) = form_cmd->head; 2073 fd_formb->fd_formb_secno(i) = il[i+1]; 2074 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2075 } 2076 2077 error = fdformat(dev, fd_formb, l->l_proc); 2078 free(fd_formb, M_TEMP); 2079 return error; 2080 2081 case FDIOCGETOPTS: /* get drive options */ 2082 *(int *)addr = fd->sc_opts; 2083 return (0); 2084 2085 case FDIOCSETOPTS: /* set drive options */ 2086 fd->sc_opts = *(int *)addr; 2087 return (0); 2088 2089 #ifdef FD_DEBUG 2090 case _IO('f', 100): 2091 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2092 fdcresult(fdc); 2093 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2094 for (i = 0; i < fdc->sc_nstat; i++) 2095 printf(" 0x%x", fdc->sc_status[i]); 2096 printf(">\n"); 2097 return (0); 2098 2099 case _IOW('f', 101, int): 2100 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2101 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2102 fdconf(fdc); 2103 return (0); 2104 2105 case _IO('f', 102): 2106 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2107 fdcresult(fdc); 2108 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2109 for (i=0; i< fdc->sc_nstat; i++) 2110 printf(" 0x%x", fdc->sc_status[i]); 2111 printf(">\n"); 2112 return (0); 2113 #endif 2114 default: 2115 return (ENOTTY); 2116 } 2117 2118 #ifdef DIAGNOSTIC 2119 panic("fdioctl: impossible"); 2120 #endif 2121 } 2122 2123 int 2124 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2125 { 2126 int rv = 0; 2127 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2128 struct fd_type *type = fd->sc_type; 2129 struct buf *bp; 2130 2131 /* set up a buffer header for fdstrategy() */ 2132 bp = getiobuf(NULL, false); 2133 if (bp == NULL) 2134 return (ENOBUFS); 2135 2136 bp->b_vp = NULL; 2137 bp->b_cflags = BC_BUSY; 2138 bp->b_flags = B_PHYS | B_FORMAT; 2139 bp->b_proc = p; 2140 bp->b_dev = dev; 2141 2142 /* 2143 * Calculate a fake blkno, so fdstrategy() would initiate a 2144 * seek to the requested cylinder. 2145 */ 2146 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2147 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2148 / DEV_BSIZE; 2149 2150 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2151 bp->b_data = (void *)finfo; 2152 2153 #ifdef FD_DEBUG 2154 if (fdc_debug) { 2155 int i; 2156 2157 printf("fdformat: blkno 0x%llx count %d\n", 2158 (unsigned long long)bp->b_blkno, bp->b_bcount); 2159 2160 printf("\tcyl:\t%d\n", finfo->cyl); 2161 printf("\thead:\t%d\n", finfo->head); 2162 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2163 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2164 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2165 printf("\ttrack data:"); 2166 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2167 printf(" [c%d h%d s%d]", 2168 finfo->fd_formb_cylno(i), 2169 finfo->fd_formb_headno(i), 2170 finfo->fd_formb_secno(i) ); 2171 if (finfo->fd_formb_secsize(i) != 2) 2172 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2173 } 2174 printf("\n"); 2175 } 2176 #endif 2177 2178 /* now do the format */ 2179 fdstrategy(bp); 2180 2181 /* ...and wait for it to complete */ 2182 rv = biowait(bp); 2183 putiobuf(bp); 2184 return (rv); 2185 } 2186 2187 void 2188 fdgetdisklabel(dev_t dev) 2189 { 2190 int unit = FDUNIT(dev), i; 2191 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2192 struct disklabel *lp = fd->sc_dk.dk_label; 2193 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2194 2195 bzero(lp, sizeof(struct disklabel)); 2196 bzero(lp, sizeof(struct cpu_disklabel)); 2197 2198 lp->d_type = DTYPE_FLOPPY; 2199 lp->d_secsize = FD_BSIZE(fd); 2200 lp->d_secpercyl = fd->sc_type->seccyl; 2201 lp->d_nsectors = fd->sc_type->sectrac; 2202 lp->d_ncylinders = fd->sc_type->cylinders; 2203 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2204 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2205 lp->d_rpm = 3600; /* XXX like it matters... */ 2206 2207 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2208 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2209 lp->d_interleave = 1; 2210 2211 lp->d_partitions[RAW_PART].p_offset = 0; 2212 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2213 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2214 lp->d_npartitions = RAW_PART + 1; 2215 2216 lp->d_magic = DISKMAGIC; 2217 lp->d_magic2 = DISKMAGIC; 2218 lp->d_checksum = dkcksum(lp); 2219 2220 /* 2221 * Call the generic disklabel extraction routine. If there's 2222 * not a label there, fake it. 2223 */ 2224 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2225 strncpy(lp->d_packname, "default label", 2226 sizeof(lp->d_packname)); 2227 /* 2228 * Reset the partition info; it might have gotten 2229 * trashed in readdisklabel(). 2230 * 2231 * XXX Why do we have to do this? readdisklabel() 2232 * should be safe... 2233 */ 2234 for (i = 0; i < MAXPARTITIONS; ++i) { 2235 lp->d_partitions[i].p_offset = 0; 2236 if (i == RAW_PART) { 2237 lp->d_partitions[i].p_size = 2238 lp->d_secpercyl * lp->d_ncylinders; 2239 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2240 } else { 2241 lp->d_partitions[i].p_size = 0; 2242 lp->d_partitions[i].p_fstype = FS_UNUSED; 2243 } 2244 } 2245 lp->d_npartitions = RAW_PART + 1; 2246 } 2247 } 2248 2249 void 2250 fd_do_eject(struct fd_softc *fd) 2251 { 2252 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 2253 2254 if (CPU_ISSUN4C) { 2255 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2256 delay(10); 2257 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2258 return; 2259 } 2260 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2261 bus_space_tag_t t = fdc->sc_bustag; 2262 bus_space_handle_t h = fdc->sc_handle; 2263 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2264 2265 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2266 delay(10); 2267 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2268 return; 2269 } 2270 } 2271 2272 /* ARGSUSED */ 2273 void 2274 fd_mountroot_hook(struct device *dev) 2275 { 2276 int c; 2277 2278 fd_do_eject(device_private(dev)); 2279 printf("Insert filesystem floppy and press return."); 2280 for (;;) { 2281 c = cngetc(); 2282 if ((c == '\r') || (c == '\n')) { 2283 printf("\n"); 2284 break; 2285 } 2286 } 2287 } 2288 2289 #ifdef MEMORY_DISK_HOOKS 2290 2291 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2292 2293 int 2294 fd_read_md_image(size_t *sizep, void * *addrp) 2295 { 2296 struct buf buf, *bp = &buf; 2297 dev_t dev; 2298 off_t offset; 2299 void *addr; 2300 2301 dev = makedev(54,0); /* XXX */ 2302 2303 MALLOC(addr, void *, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2304 *addrp = addr; 2305 2306 if (fdopen(dev, 0, S_IFCHR, NULL)) 2307 panic("fd: mountroot: fdopen"); 2308 2309 offset = 0; 2310 2311 for (;;) { 2312 bp->b_dev = dev; 2313 bp->b_error = 0; 2314 bp->b_resid = 0; 2315 bp->b_proc = NULL; 2316 bp->b_cflags |= BC_BUSY; 2317 bp->b_flags = B_PHYS | B_RAW | B_READ; 2318 bp->b_blkno = btodb(offset); 2319 bp->b_bcount = DEV_BSIZE; 2320 bp->b_data = addr; 2321 fdstrategy(bp); 2322 biowait(bp); 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 = (char *)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(device_lookup_private(&fd_cd, FDUNIT(dev))); 2337 return (0); 2338 } 2339 #endif /* MEMORY_DISK_HOOKS */ 2340
Indexes created Fri Oct 03 02:09:57 GMT 2025