1 /* $NetBSD: fd.c,v 1.140 2008/04/28 20:23:35 martin 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 1.140 2008/04/28 20:23:35 martin 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 = (void *)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 = (void *)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 = (void *)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 = (void *)parent; 754 struct fd_softc *fd = (void *)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 (unit >= fd_cd.cd_ndevs || 817 (fd = fd_cd.cd_devs[unit]) == 0 || 818 bp->b_blkno < 0 || 819 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 820 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 821 (bp->b_flags & B_FORMAT) == 0)) { 822 bp->b_error = EINVAL; 823 goto done; 824 } 825 826 /* If it's a null transfer, return immediately. */ 827 if (bp->b_bcount == 0) 828 goto done; 829 830 sz = howmany(bp->b_bcount, DEV_BSIZE); 831 832 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 833 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 834 - bp->b_blkno; 835 if (sz == 0) { 836 /* If exactly at end of disk, return EOF. */ 837 bp->b_resid = bp->b_bcount; 838 goto done; 839 } 840 if (sz < 0) { 841 /* If past end of disk, return EINVAL. */ 842 bp->b_error = EINVAL; 843 goto done; 844 } 845 /* Otherwise, truncate request. */ 846 bp->b_bcount = sz << DEV_BSHIFT; 847 } 848 849 bp->b_rawblkno = bp->b_blkno; 850 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 851 (FD_BSIZE(fd) * fd->sc_type->seccyl); 852 853 #ifdef FD_DEBUG 854 if (fdc_debug > 1) 855 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 856 (long long)bp->b_blkno, bp->b_bcount, 857 (long long)fd->sc_blkno, bp->b_cylinder); 858 #endif 859 860 /* Queue transfer on drive, activate drive and controller if idle. */ 861 s = splbio(); 862 BUFQ_PUT(fd->sc_q, bp); 863 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 864 if (fd->sc_active == 0) 865 fdstart(fd); 866 #ifdef DIAGNOSTIC 867 else { 868 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 869 if (fdc->sc_state == DEVIDLE) { 870 printf("fdstrategy: controller inactive\n"); 871 fdcstart(fdc); 872 } 873 } 874 #endif 875 splx(s); 876 return; 877 878 done: 879 /* Toss transfer; we're done early. */ 880 biodone(bp); 881 } 882 883 void 884 fdstart(struct fd_softc *fd) 885 { 886 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 887 int active = fdc->sc_drives.tqh_first != 0; 888 889 /* Link into controller queue. */ 890 fd->sc_active = 1; 891 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 892 893 /* If controller not already active, start it. */ 894 if (!active) 895 fdcstart(fdc); 896 } 897 898 void 899 fdfinish(struct fd_softc *fd, struct buf *bp) 900 { 901 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 902 903 /* 904 * Move this drive to the end of the queue to give others a `fair' 905 * chance. We only force a switch if N operations are completed while 906 * another drive is waiting to be serviced, since there is a long motor 907 * startup delay whenever we switch. 908 */ 909 (void)BUFQ_GET(fd->sc_q); 910 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 911 fd->sc_ops = 0; 912 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 913 if (BUFQ_PEEK(fd->sc_q) != NULL) { 914 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 915 } else 916 fd->sc_active = 0; 917 } 918 bp->b_resid = fd->sc_bcount; 919 fd->sc_skip = 0; 920 921 biodone(bp); 922 /* turn off motor 5s from now */ 923 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 924 fdc->sc_state = DEVIDLE; 925 } 926 927 void 928 fdc_reset(struct fdc_softc *fdc) 929 { 930 bus_space_tag_t t = fdc->sc_bustag; 931 bus_space_handle_t h = fdc->sc_handle; 932 933 if ((fdc->sc_flags & FDC_82077) != 0) { 934 bus_space_write_1(t, h, fdc->sc_reg_dor, 935 FDO_FDMAEN | FDO_MOEN(0)); 936 } 937 938 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 939 delay(10); 940 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 941 942 if ((fdc->sc_flags & FDC_82077) != 0) { 943 bus_space_write_1(t, h, fdc->sc_reg_dor, 944 FDO_FRST | FDO_FDMAEN | FDO_DS); 945 } 946 #ifdef FD_DEBUG 947 if (fdc_debug) 948 printf("fdc reset\n"); 949 #endif 950 } 951 952 void 953 fd_set_motor(struct fdc_softc *fdc) 954 { 955 struct fd_softc *fd; 956 u_char status; 957 int n; 958 959 if ((fdc->sc_flags & FDC_82077) != 0) { 960 status = FDO_FRST | FDO_FDMAEN; 961 if ((fd = fdc->sc_drives.tqh_first) != NULL) 962 status |= fd->sc_drive; 963 964 for (n = 0; n < 4; n++) 965 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 966 status |= FDO_MOEN(n); 967 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 968 fdc->sc_reg_dor, status); 969 } else { 970 971 for (n = 0; n < 4; n++) { 972 if ((fd = fdc->sc_fd[n]) != NULL && 973 (fd->sc_flags & FD_MOTOR) != 0) { 974 auxregbisc(AUXIO4C_FDS, 0); 975 return; 976 } 977 } 978 auxregbisc(0, AUXIO4C_FDS); 979 } 980 } 981 982 void 983 fd_motor_off(void *arg) 984 { 985 struct fd_softc *fd = arg; 986 int s; 987 988 s = splbio(); 989 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 990 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 991 splx(s); 992 } 993 994 void 995 fd_motor_on(void *arg) 996 { 997 struct fd_softc *fd = arg; 998 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 999 int s; 1000 1001 s = splbio(); 1002 fd->sc_flags &= ~FD_MOTOR_WAIT; 1003 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1004 (void) fdcstate(fdc); 1005 splx(s); 1006 } 1007 1008 /* 1009 * Get status bytes off the FDC after a command has finished 1010 * Returns the number of status bytes read; -1 on error. 1011 * The return value is also stored in `sc_nstat'. 1012 */ 1013 int 1014 fdcresult(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 uint8_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(struct fdc_softc *fdc, uint8_t x) 1046 { 1047 bus_space_tag_t t = fdc->sc_bustag; 1048 bus_space_handle_t h = fdc->sc_handle; 1049 int i; 1050 1051 for (i = 100000; i-- > 0;) { 1052 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1053 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1054 /* The chip is ready */ 1055 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1056 return (0); 1057 } 1058 delay(1); 1059 } 1060 return (-1); 1061 } 1062 1063 int 1064 fdc_diskchange(struct fdc_softc *fdc) 1065 { 1066 1067 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1068 bus_space_tag_t t = fdc->sc_bustag; 1069 bus_space_handle_t h = fdc->sc_handle; 1070 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1071 return ((v & FDI_DCHG) != 0); 1072 } else if (CPU_ISSUN4C) { 1073 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1074 } 1075 return (0); 1076 } 1077 1078 int 1079 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1080 { 1081 int unit, pmask; 1082 struct fd_softc *fd; 1083 struct fd_type *type; 1084 1085 unit = FDUNIT(dev); 1086 if (unit >= fd_cd.cd_ndevs) 1087 return (ENXIO); 1088 fd = fd_cd.cd_devs[unit]; 1089 if (fd == NULL) 1090 return (ENXIO); 1091 type = fd_dev_to_type(fd, dev); 1092 if (type == NULL) 1093 return (ENXIO); 1094 1095 if ((fd->sc_flags & FD_OPEN) != 0 && 1096 fd->sc_type != type) 1097 return (EBUSY); 1098 1099 fd->sc_type = type; 1100 fd->sc_cylin = -1; 1101 fd->sc_flags |= FD_OPEN; 1102 1103 /* 1104 * Only update the disklabel if we're not open anywhere else. 1105 */ 1106 if (fd->sc_dk.dk_openmask == 0) 1107 fdgetdisklabel(dev); 1108 1109 pmask = (1 << DISKPART(dev)); 1110 1111 switch (fmt) { 1112 case S_IFCHR: 1113 fd->sc_dk.dk_copenmask |= pmask; 1114 break; 1115 1116 case S_IFBLK: 1117 fd->sc_dk.dk_bopenmask |= pmask; 1118 break; 1119 } 1120 fd->sc_dk.dk_openmask = 1121 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1122 1123 return (0); 1124 } 1125 1126 int 1127 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1128 { 1129 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1130 int pmask = (1 << DISKPART(dev)); 1131 1132 fd->sc_flags &= ~FD_OPEN; 1133 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1134 1135 switch (fmt) { 1136 case S_IFCHR: 1137 fd->sc_dk.dk_copenmask &= ~pmask; 1138 break; 1139 1140 case S_IFBLK: 1141 fd->sc_dk.dk_bopenmask &= ~pmask; 1142 break; 1143 } 1144 fd->sc_dk.dk_openmask = 1145 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1146 1147 return (0); 1148 } 1149 1150 int 1151 fdread(dev_t dev, struct uio *uio, int flag) 1152 { 1153 1154 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1155 } 1156 1157 int 1158 fdwrite(dev_t dev, struct uio *uio, int flag) 1159 { 1160 1161 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1162 } 1163 1164 void 1165 fdcstart(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(struct fdc_softc *fdc, const char *s) 1181 { 1182 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1183 int n; 1184 char bits[64]; 1185 1186 /* Just print last status */ 1187 n = fdc->sc_nstat; 1188 1189 #if 0 1190 /* 1191 * A 82072 seems to return <invalid command> on 1192 * gratuitous Sense Interrupt commands. 1193 */ 1194 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1195 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1196 (void) fdcresult(fdc); 1197 n = 2; 1198 } 1199 #endif 1200 1201 printf("%s: %s: state %d", 1202 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1203 1204 switch (n) { 1205 case 0: 1206 printf("\n"); 1207 break; 1208 case 2: 1209 printf(" (st0 %s cyl %d)\n", 1210 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1211 bits, sizeof(bits)), fdc->sc_status[1]); 1212 break; 1213 case 7: 1214 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1215 NE7_ST0BITS, bits, sizeof(bits))); 1216 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1217 NE7_ST1BITS, bits, sizeof(bits))); 1218 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1219 NE7_ST2BITS, bits, sizeof(bits))); 1220 printf(" cyl %d head %d sec %d)\n", 1221 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1222 break; 1223 #ifdef DIAGNOSTIC 1224 default: 1225 printf(" fdcstatus: weird size: %d\n", n); 1226 break; 1227 #endif 1228 } 1229 } 1230 1231 void 1232 fdctimeout(void *arg) 1233 { 1234 struct fdc_softc *fdc = arg; 1235 struct fd_softc *fd; 1236 int s; 1237 1238 s = splbio(); 1239 fd = fdc->sc_drives.tqh_first; 1240 if (fd == NULL) { 1241 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1242 fdc->sc_dev.dv_xname, 1243 fdc->sc_state, fdc->sc_istatus); 1244 fdc->sc_state = DEVIDLE; 1245 goto out; 1246 } 1247 1248 if (BUFQ_PEEK(fd->sc_q) != NULL) 1249 fdc->sc_state++; 1250 else 1251 fdc->sc_state = DEVIDLE; 1252 1253 (void) fdcstate(fdc); 1254 out: 1255 splx(s); 1256 1257 } 1258 1259 void 1260 fdcpseudointr(void *arg) 1261 { 1262 struct fdc_softc *fdc = arg; 1263 int s; 1264 1265 /* Just ensure it has the right spl. */ 1266 s = splbio(); 1267 (void) fdcstate(fdc); 1268 splx(s); 1269 } 1270 1271 1272 /* 1273 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1274 * handler is available. Unfortunately, we have no reliable way to 1275 * determine that the interrupt really came from the floppy controller; 1276 * just hope that the other devices that share this interrupt level 1277 * can do better.. 1278 */ 1279 int 1280 fdc_c_hwintr(void *arg) 1281 { 1282 struct fdc_softc *fdc = arg; 1283 bus_space_tag_t t = fdc->sc_bustag; 1284 bus_space_handle_t h = fdc->sc_handle; 1285 1286 switch (fdc->sc_itask) { 1287 case FDC_ITASK_NONE: 1288 return (0); 1289 case FDC_ITASK_SENSEI: 1290 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1291 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1292 else 1293 fdc->sc_istatus = FDC_ISTATUS_DONE; 1294 softint_schedule(fdc->sc_sicookie); 1295 return (1); 1296 case FDC_ITASK_RESULT: 1297 if (fdcresult(fdc) == -1) 1298 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1299 else 1300 fdc->sc_istatus = FDC_ISTATUS_DONE; 1301 softint_schedule(fdc->sc_sicookie); 1302 return (1); 1303 case FDC_ITASK_DMA: 1304 /* Proceed with pseudo-DMA below */ 1305 break; 1306 default: 1307 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1308 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1309 softint_schedule(fdc->sc_sicookie); 1310 return (1); 1311 } 1312 1313 /* 1314 * Pseudo DMA in progress 1315 */ 1316 for (;;) { 1317 uint8_t msr; 1318 1319 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1320 1321 if ((msr & NE7_RQM) == 0) 1322 /* That's all this round */ 1323 break; 1324 1325 if ((msr & NE7_NDM) == 0) { 1326 /* Execution phase finished, get result. */ 1327 fdcresult(fdc); 1328 fdc->sc_istatus = FDC_ISTATUS_DONE; 1329 softint_schedule(fdc->sc_sicookie); 1330 break; 1331 } 1332 1333 if (fdc->sc_tc == 0) 1334 /* For some reason the controller wants to transfer 1335 more data then what we want to transfer. */ 1336 panic("fdc: overrun"); 1337 1338 /* Another byte can be transferred */ 1339 if ((msr & NE7_DIO) != 0) 1340 *fdc->sc_data = 1341 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1342 else 1343 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1344 *fdc->sc_data); 1345 1346 fdc->sc_data++; 1347 if (--fdc->sc_tc == 0) { 1348 FTC_FLIP; 1349 break; 1350 } 1351 } 1352 return (1); 1353 } 1354 1355 void 1356 fdcswintr(void *arg) 1357 { 1358 struct fdc_softc *fdc = arg; 1359 1360 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1361 /* This (software) interrupt is not for us */ 1362 return; 1363 1364 switch (fdc->sc_istatus) { 1365 case FDC_ISTATUS_ERROR: 1366 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1367 break; 1368 case FDC_ISTATUS_SPURIOUS: 1369 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1370 break; 1371 } 1372 1373 fdcstate(fdc); 1374 return; 1375 } 1376 1377 int 1378 fdcstate(struct fdc_softc *fdc) 1379 { 1380 1381 #define st0 fdc->sc_status[0] 1382 #define st1 fdc->sc_status[1] 1383 #define cyl fdc->sc_status[1] 1384 #define FDC_WRFIFO(fdc, c) do { \ 1385 if (fdc_wrfifo(fdc, (c))) { \ 1386 goto xxx; \ 1387 } \ 1388 } while(0) 1389 1390 struct fd_softc *fd; 1391 struct buf *bp; 1392 int read, head, sec, nblks; 1393 struct fd_type *type; 1394 struct ne7_fd_formb *finfo = NULL; 1395 1396 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1397 /* Prevent loop if the reset sequence produces errors */ 1398 if (fdc->sc_state != RESETCOMPLETE && 1399 fdc->sc_state != RECALWAIT && 1400 fdc->sc_state != RECALCOMPLETE) 1401 fdc->sc_state = DORESET; 1402 } 1403 1404 /* Clear I task/status field */ 1405 fdc->sc_istatus = FDC_ISTATUS_NONE; 1406 fdc->sc_itask = FDC_ITASK_NONE; 1407 1408 loop: 1409 /* Is there a drive for the controller to do a transfer with? */ 1410 fd = fdc->sc_drives.tqh_first; 1411 if (fd == NULL) { 1412 fdc->sc_state = DEVIDLE; 1413 return (0); 1414 } 1415 1416 /* Is there a transfer to this drive? If not, deactivate drive. */ 1417 bp = BUFQ_PEEK(fd->sc_q); 1418 if (bp == NULL) { 1419 fd->sc_ops = 0; 1420 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1421 fd->sc_active = 0; 1422 goto loop; 1423 } 1424 1425 if (bp->b_flags & B_FORMAT) 1426 finfo = (struct ne7_fd_formb *)bp->b_data; 1427 1428 switch (fdc->sc_state) { 1429 case DEVIDLE: 1430 fdc->sc_errors = 0; 1431 fd->sc_skip = 0; 1432 fd->sc_bcount = bp->b_bcount; 1433 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1434 callout_stop(&fd->sc_motoroff_ch); 1435 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1436 fdc->sc_state = MOTORWAIT; 1437 return (1); 1438 } 1439 if ((fd->sc_flags & FD_MOTOR) == 0) { 1440 /* Turn on the motor, being careful about pairing. */ 1441 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1442 if (ofd && ofd->sc_flags & FD_MOTOR) { 1443 callout_stop(&ofd->sc_motoroff_ch); 1444 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1445 } 1446 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1447 fd_set_motor(fdc); 1448 fdc->sc_state = MOTORWAIT; 1449 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1450 /* Allow .25s for motor to stabilize. */ 1451 callout_reset(&fd->sc_motoron_ch, hz / 4, 1452 fd_motor_on, fd); 1453 } else { 1454 fd->sc_flags &= ~FD_MOTOR_WAIT; 1455 goto loop; 1456 } 1457 return (1); 1458 } 1459 /* Make sure the right drive is selected. */ 1460 fd_set_motor(fdc); 1461 1462 if (fdc_diskchange(fdc)) 1463 goto dodskchg; 1464 1465 /*FALLTHROUGH*/ 1466 case DOSEEK: 1467 doseek: 1468 if ((fdc->sc_flags & FDC_EIS) && 1469 (bp->b_flags & B_FORMAT) == 0) { 1470 fd->sc_cylin = bp->b_cylinder; 1471 /* We use implied seek */ 1472 goto doio; 1473 } 1474 1475 if (fd->sc_cylin == bp->b_cylinder) 1476 goto doio; 1477 1478 fd->sc_cylin = -1; 1479 fdc->sc_state = SEEKWAIT; 1480 fdc->sc_nstat = 0; 1481 1482 iostat_seek(fd->sc_dk.dk_stats); 1483 1484 disk_busy(&fd->sc_dk); 1485 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1486 1487 /* specify command */ 1488 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1489 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1490 /* XXX head load time == 6ms */ 1491 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1492 1493 fdc->sc_itask = FDC_ITASK_SENSEI; 1494 /* seek function */ 1495 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1496 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1497 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1498 return (1); 1499 1500 case DODSKCHG: 1501 dodskchg: 1502 /* 1503 * Disk change: force a seek operation by going to cyl 1 1504 * followed by a recalibrate. 1505 */ 1506 disk_busy(&fd->sc_dk); 1507 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1508 fd->sc_cylin = -1; 1509 fdc->sc_nstat = 0; 1510 fdc->sc_state = DSKCHGWAIT; 1511 1512 fdc->sc_itask = FDC_ITASK_SENSEI; 1513 /* seek function */ 1514 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1515 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1516 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1517 return (1); 1518 1519 case DSKCHGWAIT: 1520 callout_stop(&fdc->sc_timo_ch); 1521 disk_unbusy(&fd->sc_dk, 0, 0); 1522 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1523 cyl != 1 * fd->sc_type->step) { 1524 fdcstatus(fdc, "dskchg seek failed"); 1525 fdc->sc_state = DORESET; 1526 } else 1527 fdc->sc_state = DORECAL; 1528 1529 if (fdc_diskchange(fdc)) { 1530 printf("%s: cannot clear disk change status\n", 1531 fdc->sc_dev.dv_xname); 1532 fdc->sc_state = DORESET; 1533 } 1534 goto loop; 1535 1536 case DOIO: 1537 doio: 1538 if (finfo != NULL) 1539 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1540 (char *)finfo; 1541 type = fd->sc_type; 1542 sec = fd->sc_blkno % type->seccyl; 1543 nblks = type->seccyl - sec; 1544 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1545 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1546 fd->sc_nblks = nblks; 1547 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1548 head = sec / type->sectrac; 1549 sec -= head * type->sectrac; 1550 #ifdef DIAGNOSTIC 1551 {int block; 1552 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1553 if (block != fd->sc_blkno) { 1554 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1555 #ifdef DDB 1556 Debugger(); 1557 #endif 1558 }} 1559 #endif 1560 read = bp->b_flags & B_READ; 1561 1562 /* Setup for pseudo DMA */ 1563 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1564 fdc->sc_tc = fd->sc_nbytes; 1565 1566 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1567 fdc->sc_reg_drs, type->rate); 1568 #ifdef FD_DEBUG 1569 if (fdc_debug > 1) 1570 printf("fdcstate: doio: %s drive %d " 1571 "track %d head %d sec %d nblks %d\n", 1572 finfo ? "format" : 1573 (read ? "read" : "write"), 1574 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1575 #endif 1576 fdc->sc_state = IOCOMPLETE; 1577 fdc->sc_itask = FDC_ITASK_DMA; 1578 fdc->sc_nstat = 0; 1579 1580 disk_busy(&fd->sc_dk); 1581 1582 /* allow 3 seconds for operation */ 1583 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1584 1585 if (finfo != NULL) { 1586 /* formatting */ 1587 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1588 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1589 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1590 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1591 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1592 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1593 } else { 1594 if (read) 1595 FDC_WRFIFO(fdc, NE7CMD_READ); 1596 else 1597 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1598 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1599 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1600 FDC_WRFIFO(fdc, head); 1601 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1602 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1603 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1604 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1605 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1606 } 1607 1608 return (1); /* will return later */ 1609 1610 case SEEKWAIT: 1611 callout_stop(&fdc->sc_timo_ch); 1612 fdc->sc_state = SEEKCOMPLETE; 1613 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1614 /* allow 1/50 second for heads to settle */ 1615 callout_reset(&fdc->sc_intr_ch, hz / 50, 1616 fdcpseudointr, fdc); 1617 return (1); /* will return later */ 1618 } 1619 /*FALLTHROUGH*/ 1620 case SEEKCOMPLETE: 1621 /* no data on seek */ 1622 disk_unbusy(&fd->sc_dk, 0, 0); 1623 1624 /* Make sure seek really happened. */ 1625 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1626 cyl != bp->b_cylinder * fd->sc_type->step) { 1627 #ifdef FD_DEBUG 1628 if (fdc_debug) 1629 fdcstatus(fdc, "seek failed"); 1630 #endif 1631 fdcretry(fdc); 1632 goto loop; 1633 } 1634 fd->sc_cylin = bp->b_cylinder; 1635 goto doio; 1636 1637 case IOTIMEDOUT: 1638 /* 1639 * Try to abort the I/O operation without resetting 1640 * the chip first. Poke TC and arrange to pick up 1641 * the timed out I/O command's status. 1642 */ 1643 fdc->sc_itask = FDC_ITASK_RESULT; 1644 fdc->sc_state = IOCLEANUPWAIT; 1645 fdc->sc_nstat = 0; 1646 /* 1/10 second should be enough */ 1647 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1648 FTC_FLIP; 1649 return (1); 1650 1651 case IOCLEANUPTIMEDOUT: 1652 case SEEKTIMEDOUT: 1653 case RECALTIMEDOUT: 1654 case RESETTIMEDOUT: 1655 case DSKCHGTIMEDOUT: 1656 fdcstatus(fdc, "timeout"); 1657 1658 /* All other timeouts always roll through to a chip reset */ 1659 fdcretry(fdc); 1660 1661 /* Force reset, no matter what fdcretry() says */ 1662 fdc->sc_state = DORESET; 1663 goto loop; 1664 1665 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1666 callout_stop(&fdc->sc_timo_ch); 1667 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1668 (bp->b_flags & B_READ)); 1669 fdcretry(fdc); 1670 goto loop; 1671 1672 case IOCOMPLETE: /* IO DONE, post-analyze */ 1673 callout_stop(&fdc->sc_timo_ch); 1674 1675 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1676 (bp->b_flags & B_READ)); 1677 1678 if (fdc->sc_nstat != 7 || st1 != 0 || 1679 ((st0 & 0xf8) != 0 && 1680 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1681 #ifdef FD_DEBUG 1682 if (fdc_debug) { 1683 fdcstatus(fdc, 1684 bp->b_flags & B_READ 1685 ? "read failed" : "write failed"); 1686 printf("blkno %lld nblks %d nstat %d tc %d\n", 1687 (long long)fd->sc_blkno, fd->sc_nblks, 1688 fdc->sc_nstat, fdc->sc_tc); 1689 } 1690 #endif 1691 if (fdc->sc_nstat == 7 && 1692 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1693 1694 /* 1695 * Silently retry overruns if no other 1696 * error bit is set. Adjust threshold. 1697 */ 1698 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1699 if (thr < 15) { 1700 thr++; 1701 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1702 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1703 #ifdef FD_DEBUG 1704 if (fdc_debug) 1705 printf("fdc: %d -> threshold\n", thr); 1706 #endif 1707 fdconf(fdc); 1708 fdc->sc_overruns = 0; 1709 } 1710 if (++fdc->sc_overruns < 3) { 1711 fdc->sc_state = DOIO; 1712 goto loop; 1713 } 1714 } 1715 fdcretry(fdc); 1716 goto loop; 1717 } 1718 if (fdc->sc_errors) { 1719 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1720 fd->sc_skip / FD_BSIZE(fd), 1721 (struct disklabel *)NULL); 1722 printf("\n"); 1723 fdc->sc_errors = 0; 1724 } else { 1725 if (--fdc->sc_overruns < -20) { 1726 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1727 if (thr > 0) { 1728 thr--; 1729 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1730 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1731 #ifdef FD_DEBUG 1732 if (fdc_debug) 1733 printf("fdc: %d -> threshold\n", thr); 1734 #endif 1735 fdconf(fdc); 1736 } 1737 fdc->sc_overruns = 0; 1738 } 1739 } 1740 fd->sc_blkno += fd->sc_nblks; 1741 fd->sc_skip += fd->sc_nbytes; 1742 fd->sc_bcount -= fd->sc_nbytes; 1743 if (finfo == NULL && fd->sc_bcount > 0) { 1744 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1745 goto doseek; 1746 } 1747 fdfinish(fd, bp); 1748 goto loop; 1749 1750 case DORESET: 1751 /* try a reset, keep motor on */ 1752 fd_set_motor(fdc); 1753 delay(100); 1754 fdc->sc_nstat = 0; 1755 fdc->sc_itask = FDC_ITASK_SENSEI; 1756 fdc->sc_state = RESETCOMPLETE; 1757 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1758 fdc_reset(fdc); 1759 return (1); /* will return later */ 1760 1761 case RESETCOMPLETE: 1762 callout_stop(&fdc->sc_timo_ch); 1763 fdconf(fdc); 1764 1765 /* FALLTHROUGH */ 1766 case DORECAL: 1767 fdc->sc_state = RECALWAIT; 1768 fdc->sc_itask = FDC_ITASK_SENSEI; 1769 fdc->sc_nstat = 0; 1770 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1771 /* recalibrate function */ 1772 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1773 FDC_WRFIFO(fdc, fd->sc_drive); 1774 return (1); /* will return later */ 1775 1776 case RECALWAIT: 1777 callout_stop(&fdc->sc_timo_ch); 1778 fdc->sc_state = RECALCOMPLETE; 1779 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1780 /* allow 1/30 second for heads to settle */ 1781 callout_reset(&fdc->sc_intr_ch, hz / 30, 1782 fdcpseudointr, fdc); 1783 return (1); /* will return later */ 1784 } 1785 1786 case RECALCOMPLETE: 1787 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1788 #ifdef FD_DEBUG 1789 if (fdc_debug) 1790 fdcstatus(fdc, "recalibrate failed"); 1791 #endif 1792 fdcretry(fdc); 1793 goto loop; 1794 } 1795 fd->sc_cylin = 0; 1796 goto doseek; 1797 1798 case MOTORWAIT: 1799 if (fd->sc_flags & FD_MOTOR_WAIT) 1800 return (1); /* time's not up yet */ 1801 goto doseek; 1802 1803 default: 1804 fdcstatus(fdc, "stray interrupt"); 1805 return (1); 1806 } 1807 #ifdef DIAGNOSTIC 1808 panic("fdcintr: impossible"); 1809 #endif 1810 1811 xxx: 1812 /* 1813 * We get here if the chip locks up in FDC_WRFIFO() 1814 * Cancel any operation and schedule a reset 1815 */ 1816 callout_stop(&fdc->sc_timo_ch); 1817 fdcretry(fdc); 1818 (fdc)->sc_state = DORESET; 1819 goto loop; 1820 1821 #undef st0 1822 #undef st1 1823 #undef cyl 1824 } 1825 1826 void 1827 fdcretry(struct fdc_softc *fdc) 1828 { 1829 struct fd_softc *fd; 1830 struct buf *bp; 1831 int error = EIO; 1832 1833 fd = fdc->sc_drives.tqh_first; 1834 bp = BUFQ_PEEK(fd->sc_q); 1835 1836 fdc->sc_overruns = 0; 1837 if (fd->sc_opts & FDOPT_NORETRY) 1838 goto fail; 1839 1840 switch (fdc->sc_errors) { 1841 case 0: 1842 if (fdc->sc_nstat == 7 && 1843 (fdc->sc_status[0] & 0xd8) == 0x40 && 1844 (fdc->sc_status[1] & 0x2) == 0x2) { 1845 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1846 error = EROFS; 1847 goto failsilent; 1848 } 1849 /* try again */ 1850 fdc->sc_state = 1851 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1852 break; 1853 1854 case 1: case 2: case 3: 1855 /* didn't work; try recalibrating */ 1856 fdc->sc_state = DORECAL; 1857 break; 1858 1859 case 4: 1860 if (fdc->sc_nstat == 7 && 1861 fdc->sc_status[0] == 0 && 1862 fdc->sc_status[1] == 0 && 1863 fdc->sc_status[2] == 0) { 1864 /* 1865 * We've retried a few times and we've got 1866 * valid status and all three status bytes 1867 * are zero. Assume this condition is the 1868 * result of no disk loaded into the drive. 1869 */ 1870 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1871 error = ENODEV; 1872 goto failsilent; 1873 } 1874 1875 /* still no go; reset the bastard */ 1876 fdc->sc_state = DORESET; 1877 break; 1878 1879 default: 1880 fail: 1881 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1882 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1883 fd->sc_skip / FD_BSIZE(fd), 1884 (struct disklabel *)NULL); 1885 printf("\n"); 1886 fdcstatus(fdc, "controller status"); 1887 } 1888 1889 failsilent: 1890 bp->b_error = error; 1891 fdfinish(fd, bp); 1892 } 1893 fdc->sc_errors++; 1894 } 1895 1896 int 1897 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1898 { 1899 struct fd_softc *fd; 1900 struct fdc_softc *fdc; 1901 struct fdformat_parms *form_parms; 1902 struct fdformat_cmd *form_cmd; 1903 struct ne7_fd_formb *fd_formb; 1904 int il[FD_MAX_NSEC + 1]; 1905 int unit; 1906 int i, j; 1907 int error; 1908 1909 unit = FDUNIT(dev); 1910 if (unit >= fd_cd.cd_ndevs) 1911 return (ENXIO); 1912 1913 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1914 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 1915 1916 switch (cmd) { 1917 case DIOCGDINFO: 1918 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1919 return 0; 1920 1921 case DIOCWLABEL: 1922 if ((flag & FWRITE) == 0) 1923 return EBADF; 1924 /* XXX do something */ 1925 return (0); 1926 1927 case DIOCWDINFO: 1928 if ((flag & FWRITE) == 0) 1929 return (EBADF); 1930 1931 error = setdisklabel(fd->sc_dk.dk_label, 1932 (struct disklabel *)addr, 0, 1933 fd->sc_dk.dk_cpulabel); 1934 if (error) 1935 return (error); 1936 1937 error = writedisklabel(dev, fdstrategy, 1938 fd->sc_dk.dk_label, 1939 fd->sc_dk.dk_cpulabel); 1940 return (error); 1941 1942 case DIOCLOCK: 1943 /* 1944 * Nothing to do here, really. 1945 */ 1946 return (0); 1947 1948 case DIOCEJECT: 1949 if (*(int *)addr == 0) { 1950 int part = DISKPART(dev); 1951 /* 1952 * Don't force eject: check that we are the only 1953 * partition open. If so, unlock it. 1954 */ 1955 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1956 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1957 fd->sc_dk.dk_openmask) { 1958 return (EBUSY); 1959 } 1960 } 1961 /* FALLTHROUGH */ 1962 case ODIOCEJECT: 1963 fd_do_eject(fd); 1964 return (0); 1965 1966 case FDIOCGETFORMAT: 1967 form_parms = (struct fdformat_parms *)addr; 1968 form_parms->fdformat_version = FDFORMAT_VERSION; 1969 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1970 form_parms->ncyl = fd->sc_type->cylinders; 1971 form_parms->nspt = fd->sc_type->sectrac; 1972 form_parms->ntrk = fd->sc_type->heads; 1973 form_parms->stepspercyl = fd->sc_type->step; 1974 form_parms->gaplen = fd->sc_type->gap2; 1975 form_parms->fillbyte = fd->sc_type->fillbyte; 1976 form_parms->interleave = fd->sc_type->interleave; 1977 switch (fd->sc_type->rate) { 1978 case FDC_500KBPS: 1979 form_parms->xfer_rate = 500 * 1024; 1980 break; 1981 case FDC_300KBPS: 1982 form_parms->xfer_rate = 300 * 1024; 1983 break; 1984 case FDC_250KBPS: 1985 form_parms->xfer_rate = 250 * 1024; 1986 break; 1987 default: 1988 return (EINVAL); 1989 } 1990 return (0); 1991 1992 case FDIOCSETFORMAT: 1993 if ((flag & FWRITE) == 0) 1994 return (EBADF); /* must be opened for writing */ 1995 1996 form_parms = (struct fdformat_parms *)addr; 1997 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1998 return (EINVAL);/* wrong version of formatting prog */ 1999 2000 i = form_parms->nbps >> 7; 2001 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2002 i & ~(1 << (ffs(i)-1))) 2003 /* not a power-of-two multiple of 128 */ 2004 return (EINVAL); 2005 2006 switch (form_parms->xfer_rate) { 2007 case 500 * 1024: 2008 fd->sc_type->rate = FDC_500KBPS; 2009 break; 2010 case 300 * 1024: 2011 fd->sc_type->rate = FDC_300KBPS; 2012 break; 2013 case 250 * 1024: 2014 fd->sc_type->rate = FDC_250KBPS; 2015 break; 2016 default: 2017 return (EINVAL); 2018 } 2019 2020 if (form_parms->nspt > FD_MAX_NSEC || 2021 form_parms->fillbyte > 0xff || 2022 form_parms->interleave > 0xff) 2023 return EINVAL; 2024 fd->sc_type->sectrac = form_parms->nspt; 2025 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2026 return EINVAL; 2027 fd->sc_type->heads = form_parms->ntrk; 2028 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2029 fd->sc_type->secsize = ffs(i)-1; 2030 fd->sc_type->gap2 = form_parms->gaplen; 2031 fd->sc_type->cylinders = form_parms->ncyl; 2032 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2033 form_parms->nbps / DEV_BSIZE; 2034 fd->sc_type->step = form_parms->stepspercyl; 2035 fd->sc_type->fillbyte = form_parms->fillbyte; 2036 fd->sc_type->interleave = form_parms->interleave; 2037 return (0); 2038 2039 case FDIOCFORMAT_TRACK: 2040 if((flag & FWRITE) == 0) 2041 /* must be opened for writing */ 2042 return (EBADF); 2043 form_cmd = (struct fdformat_cmd *)addr; 2044 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2045 /* wrong version of formatting prog */ 2046 return (EINVAL); 2047 2048 if (form_cmd->head >= fd->sc_type->heads || 2049 form_cmd->cylinder >= fd->sc_type->cylinders) { 2050 return (EINVAL); 2051 } 2052 2053 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2054 M_TEMP, M_NOWAIT); 2055 if (fd_formb == 0) 2056 return (ENOMEM); 2057 2058 fd_formb->head = form_cmd->head; 2059 fd_formb->cyl = form_cmd->cylinder; 2060 fd_formb->transfer_rate = fd->sc_type->rate; 2061 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2062 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2063 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2064 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2065 2066 bzero(il, sizeof il); 2067 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2068 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2069 j++; 2070 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2071 j += fd->sc_type->interleave; 2072 } 2073 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2074 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2075 fd_formb->fd_formb_headno(i) = form_cmd->head; 2076 fd_formb->fd_formb_secno(i) = il[i+1]; 2077 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2078 } 2079 2080 error = fdformat(dev, fd_formb, l->l_proc); 2081 free(fd_formb, M_TEMP); 2082 return error; 2083 2084 case FDIOCGETOPTS: /* get drive options */ 2085 *(int *)addr = fd->sc_opts; 2086 return (0); 2087 2088 case FDIOCSETOPTS: /* set drive options */ 2089 fd->sc_opts = *(int *)addr; 2090 return (0); 2091 2092 #ifdef FD_DEBUG 2093 case _IO('f', 100): 2094 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2095 fdcresult(fdc); 2096 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2097 for (i = 0; i < fdc->sc_nstat; i++) 2098 printf(" 0x%x", fdc->sc_status[i]); 2099 printf(">\n"); 2100 return (0); 2101 2102 case _IOW('f', 101, int): 2103 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2104 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2105 fdconf(fdc); 2106 return (0); 2107 2108 case _IO('f', 102): 2109 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2110 fdcresult(fdc); 2111 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2112 for (i=0; i< fdc->sc_nstat; i++) 2113 printf(" 0x%x", fdc->sc_status[i]); 2114 printf(">\n"); 2115 return (0); 2116 #endif 2117 default: 2118 return (ENOTTY); 2119 } 2120 2121 #ifdef DIAGNOSTIC 2122 panic("fdioctl: impossible"); 2123 #endif 2124 } 2125 2126 int 2127 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2128 { 2129 int rv = 0; 2130 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2131 struct fd_type *type = fd->sc_type; 2132 struct buf *bp; 2133 2134 /* set up a buffer header for fdstrategy() */ 2135 bp = getiobuf(NULL, false); 2136 if (bp == NULL) 2137 return (ENOBUFS); 2138 2139 bp->b_vp = NULL; 2140 bp->b_cflags = BC_BUSY; 2141 bp->b_flags = B_PHYS | B_FORMAT; 2142 bp->b_proc = p; 2143 bp->b_dev = dev; 2144 2145 /* 2146 * Calculate a fake blkno, so fdstrategy() would initiate a 2147 * seek to the requested cylinder. 2148 */ 2149 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2150 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2151 / DEV_BSIZE; 2152 2153 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2154 bp->b_data = (void *)finfo; 2155 2156 #ifdef FD_DEBUG 2157 if (fdc_debug) { 2158 int i; 2159 2160 printf("fdformat: blkno 0x%llx count %d\n", 2161 (unsigned long long)bp->b_blkno, bp->b_bcount); 2162 2163 printf("\tcyl:\t%d\n", finfo->cyl); 2164 printf("\thead:\t%d\n", finfo->head); 2165 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2166 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2167 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2168 printf("\ttrack data:"); 2169 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2170 printf(" [c%d h%d s%d]", 2171 finfo->fd_formb_cylno(i), 2172 finfo->fd_formb_headno(i), 2173 finfo->fd_formb_secno(i) ); 2174 if (finfo->fd_formb_secsize(i) != 2) 2175 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2176 } 2177 printf("\n"); 2178 } 2179 #endif 2180 2181 /* now do the format */ 2182 fdstrategy(bp); 2183 2184 /* ...and wait for it to complete */ 2185 rv = biowait(bp); 2186 putiobuf(bp); 2187 return (rv); 2188 } 2189 2190 void 2191 fdgetdisklabel(dev_t dev) 2192 { 2193 int unit = FDUNIT(dev), i; 2194 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2195 struct disklabel *lp = fd->sc_dk.dk_label; 2196 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2197 2198 bzero(lp, sizeof(struct disklabel)); 2199 bzero(lp, sizeof(struct cpu_disklabel)); 2200 2201 lp->d_type = DTYPE_FLOPPY; 2202 lp->d_secsize = FD_BSIZE(fd); 2203 lp->d_secpercyl = fd->sc_type->seccyl; 2204 lp->d_nsectors = fd->sc_type->sectrac; 2205 lp->d_ncylinders = fd->sc_type->cylinders; 2206 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2207 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2208 lp->d_rpm = 3600; /* XXX like it matters... */ 2209 2210 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2211 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2212 lp->d_interleave = 1; 2213 2214 lp->d_partitions[RAW_PART].p_offset = 0; 2215 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2216 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2217 lp->d_npartitions = RAW_PART + 1; 2218 2219 lp->d_magic = DISKMAGIC; 2220 lp->d_magic2 = DISKMAGIC; 2221 lp->d_checksum = dkcksum(lp); 2222 2223 /* 2224 * Call the generic disklabel extraction routine. If there's 2225 * not a label there, fake it. 2226 */ 2227 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2228 strncpy(lp->d_packname, "default label", 2229 sizeof(lp->d_packname)); 2230 /* 2231 * Reset the partition info; it might have gotten 2232 * trashed in readdisklabel(). 2233 * 2234 * XXX Why do we have to do this? readdisklabel() 2235 * should be safe... 2236 */ 2237 for (i = 0; i < MAXPARTITIONS; ++i) { 2238 lp->d_partitions[i].p_offset = 0; 2239 if (i == RAW_PART) { 2240 lp->d_partitions[i].p_size = 2241 lp->d_secpercyl * lp->d_ncylinders; 2242 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2243 } else { 2244 lp->d_partitions[i].p_size = 0; 2245 lp->d_partitions[i].p_fstype = FS_UNUSED; 2246 } 2247 } 2248 lp->d_npartitions = RAW_PART + 1; 2249 } 2250 } 2251 2252 void 2253 fd_do_eject(struct fd_softc *fd) 2254 { 2255 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2256 2257 if (CPU_ISSUN4C) { 2258 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2259 delay(10); 2260 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2261 return; 2262 } 2263 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2264 bus_space_tag_t t = fdc->sc_bustag; 2265 bus_space_handle_t h = fdc->sc_handle; 2266 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2267 2268 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2269 delay(10); 2270 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2271 return; 2272 } 2273 } 2274 2275 /* ARGSUSED */ 2276 void 2277 fd_mountroot_hook(struct device *dev) 2278 { 2279 int c; 2280 2281 fd_do_eject((struct fd_softc *)dev); 2282 printf("Insert filesystem floppy and press return."); 2283 for (;;) { 2284 c = cngetc(); 2285 if ((c == '\r') || (c == '\n')) { 2286 printf("\n"); 2287 break; 2288 } 2289 } 2290 } 2291 2292 #ifdef MEMORY_DISK_HOOKS 2293 2294 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2295 2296 int 2297 fd_read_md_image(size_t *sizep, void * *addrp) 2298 { 2299 struct buf buf, *bp = &buf; 2300 dev_t dev; 2301 off_t offset; 2302 void *addr; 2303 2304 dev = makedev(54,0); /* XXX */ 2305 2306 MALLOC(addr, void *, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2307 *addrp = addr; 2308 2309 if (fdopen(dev, 0, S_IFCHR, NULL)) 2310 panic("fd: mountroot: fdopen"); 2311 2312 offset = 0; 2313 2314 for (;;) { 2315 bp->b_dev = dev; 2316 bp->b_error = 0; 2317 bp->b_resid = 0; 2318 bp->b_proc = NULL; 2319 bp->b_cflags |= BC_BUSY; 2320 bp->b_flags = B_PHYS | B_RAW | B_READ; 2321 bp->b_blkno = btodb(offset); 2322 bp->b_bcount = DEV_BSIZE; 2323 bp->b_data = addr; 2324 fdstrategy(bp); 2325 biowait(bp); 2326 if (bp->b_error) 2327 panic("fd: mountroot: fdread error %d", bp->b_error); 2328 2329 if (bp->b_resid != 0) 2330 break; 2331 2332 addr = (char *)addr + DEV_BSIZE; 2333 offset += DEV_BSIZE; 2334 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2335 break; 2336 } 2337 (void)fdclose(dev, 0, S_IFCHR, NULL); 2338 *sizep = offset; 2339 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2340 return (0); 2341 } 2342 #endif /* MEMORY_DISK_HOOKS */ 2343