1 /* $NetBSD: fd.c,v 1.138 2007/11/27 21:56:06 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /*- 74 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 75 * 76 * This code is derived from software contributed to Berkeley by 77 * Don Ahn. 78 * 79 * Redistribution and use in source and binary forms, with or without 80 * modification, are permitted provided that the following conditions 81 * are met: 82 * 1. Redistributions of source code must retain the above copyright 83 * notice, this list of conditions and the following disclaimer. 84 * 2. Redistributions in binary form must reproduce the above copyright 85 * notice, this list of conditions and the following disclaimer in the 86 * documentation and/or other materials provided with the distribution. 87 * 3. All advertising materials mentioning features or use of this software 88 * must display the following acknowledgement: 89 * This product includes software developed by the University of 90 * California, Berkeley and its contributors. 91 * 4. Neither the name of the University nor the names of its contributors 92 * may be used to endorse or promote products derived from this software 93 * without specific prior written permission. 94 * 95 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 96 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 97 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 98 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 99 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 100 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 101 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 103 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 104 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 105 * SUCH DAMAGE. 106 * 107 * @(#)fd.c 7.4 (Berkeley) 5/25/91 108 */ 109 110 #include <sys/cdefs.h> 111 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.138 2007/11/27 21:56:06 ad Exp $"); 112 113 #include "opt_ddb.h" 114 #include "opt_md.h" 115 116 #include <sys/param.h> 117 #include <sys/systm.h> 118 #include <sys/callout.h> 119 #include <sys/kernel.h> 120 #include <sys/file.h> 121 #include <sys/ioctl.h> 122 #include <sys/device.h> 123 #include <sys/disklabel.h> 124 #include <sys/disk.h> 125 #include <sys/fdio.h> 126 #include <sys/buf.h> 127 #include <sys/bufq.h> 128 #include <sys/malloc.h> 129 #include <sys/proc.h> 130 #include <sys/uio.h> 131 #include <sys/stat.h> 132 #include <sys/syslog.h> 133 #include <sys/queue.h> 134 #include <sys/conf.h> 135 #include <sys/intr.h> 136 137 #include <dev/cons.h> 138 139 #include <uvm/uvm_extern.h> 140 141 #include <machine/autoconf.h> 142 143 #include <sparc/sparc/auxreg.h> 144 #include <sparc/dev/fdreg.h> 145 #include <sparc/dev/fdvar.h> 146 147 #define FDUNIT(dev) (minor(dev) / 8) 148 #define FDTYPE(dev) (minor(dev) % 8) 149 150 /* (mis)use device use flag to identify format operation */ 151 #define B_FORMAT B_DEVPRIVATE 152 153 #define FD_DEBUG 154 #ifdef FD_DEBUG 155 int fdc_debug = 0; 156 #endif 157 158 enum fdc_state { 159 DEVIDLE = 0, 160 MOTORWAIT, /* 1 */ 161 DOSEEK, /* 2 */ 162 SEEKWAIT, /* 3 */ 163 SEEKTIMEDOUT, /* 4 */ 164 SEEKCOMPLETE, /* 5 */ 165 DOIO, /* 6 */ 166 IOCOMPLETE, /* 7 */ 167 IOTIMEDOUT, /* 8 */ 168 IOCLEANUPWAIT, /* 9 */ 169 IOCLEANUPTIMEDOUT,/*10 */ 170 DORESET, /* 11 */ 171 RESETCOMPLETE, /* 12 */ 172 RESETTIMEDOUT, /* 13 */ 173 DORECAL, /* 14 */ 174 RECALWAIT, /* 15 */ 175 RECALTIMEDOUT, /* 16 */ 176 RECALCOMPLETE, /* 17 */ 177 DODSKCHG, /* 18 */ 178 DSKCHGWAIT, /* 19 */ 179 DSKCHGTIMEDOUT, /* 20 */ 180 }; 181 182 /* software state, per controller */ 183 struct fdc_softc { 184 struct device sc_dev; /* boilerplate */ 185 bus_space_tag_t sc_bustag; 186 187 struct callout sc_timo_ch; /* timeout callout */ 188 struct callout sc_intr_ch; /* pseudo-intr callout */ 189 190 struct fd_softc *sc_fd[4]; /* pointers to children */ 191 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 192 enum fdc_state sc_state; 193 int sc_flags; 194 #define FDC_82077 0x01 195 #define FDC_NEEDHEADSETTLE 0x02 196 #define FDC_EIS 0x04 197 #define FDC_NEEDMOTORWAIT 0x08 198 int sc_errors; /* number of retries so far */ 199 int sc_overruns; /* number of DMA overruns */ 200 int sc_cfg; /* current configuration */ 201 struct fdcio sc_io; 202 #define sc_handle sc_io.fdcio_handle 203 #define sc_reg_msr sc_io.fdcio_reg_msr 204 #define sc_reg_fifo sc_io.fdcio_reg_fifo 205 #define sc_reg_dor sc_io.fdcio_reg_dor 206 #define sc_reg_dir sc_io.fdcio_reg_dir 207 #define sc_reg_drs sc_io.fdcio_reg_msr 208 #define sc_itask sc_io.fdcio_itask 209 #define sc_istatus sc_io.fdcio_istatus 210 #define sc_data sc_io.fdcio_data 211 #define sc_tc sc_io.fdcio_tc 212 #define sc_nstat sc_io.fdcio_nstat 213 #define sc_status sc_io.fdcio_status 214 #define sc_intrcnt sc_io.fdcio_intrcnt 215 216 void *sc_sicookie; /* softintr(9) cookie */ 217 }; 218 219 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 220 221 /* controller driver configuration */ 222 int fdcmatch_mainbus(struct device *, struct cfdata *, void *); 223 int fdcmatch_obio(struct device *, struct cfdata *, void *); 224 void fdcattach_mainbus(struct device *, struct device *, void *); 225 void fdcattach_obio(struct device *, struct device *, void *); 226 227 int fdcattach(struct fdc_softc *, int); 228 229 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 230 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 231 232 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 233 fdcmatch_obio, fdcattach_obio, NULL, NULL); 234 235 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 236 237 /* 238 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 239 * we tell them apart. 240 */ 241 struct fd_type { 242 int sectrac; /* sectors per track */ 243 int heads; /* number of heads */ 244 int seccyl; /* sectors per cylinder */ 245 int secsize; /* size code for sectors */ 246 int datalen; /* data len when secsize = 0 */ 247 int steprate; /* step rate and head unload time */ 248 int gap1; /* gap len between sectors */ 249 int gap2; /* formatting gap */ 250 int cylinders; /* total num of cylinders */ 251 int size; /* size of disk in sectors */ 252 int step; /* steps per cylinder */ 253 int rate; /* transfer speed code */ 254 int fillbyte; /* format fill byte */ 255 int interleave; /* interleave factor (formatting) */ 256 const char *name; 257 }; 258 259 /* The order of entries in the following table is important -- BEWARE! */ 260 struct fd_type fd_types[] = { 261 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 262 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 263 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 264 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 265 }; 266 267 /* software state, per disk (with up to 4 disks per ctlr) */ 268 struct fd_softc { 269 struct device sc_dv; /* generic device info */ 270 struct disk sc_dk; /* generic disk info */ 271 272 struct fd_type *sc_deftype; /* default type descriptor */ 273 struct fd_type *sc_type; /* current type descriptor */ 274 275 struct callout sc_motoron_ch; 276 struct callout sc_motoroff_ch; 277 278 daddr_t sc_blkno; /* starting block number */ 279 int sc_bcount; /* byte count left */ 280 int sc_skip; /* bytes already transferred */ 281 int sc_nblks; /* number of blocks currently transferring */ 282 int sc_nbytes; /* number of bytes currently transferring */ 283 284 int sc_drive; /* physical unit number */ 285 int sc_flags; 286 #define FD_OPEN 0x01 /* it's open */ 287 #define FD_MOTOR 0x02 /* motor should be on */ 288 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 289 int sc_cylin; /* where we think the head is */ 290 int sc_opts; /* user-set options */ 291 292 void *sc_sdhook; /* shutdownhook cookie */ 293 294 TAILQ_ENTRY(fd_softc) sc_drivechain; 295 int sc_ops; /* I/O ops since last switch */ 296 struct bufq_state *sc_q;/* pending I/O requests */ 297 int sc_active; /* number of active I/O requests */ 298 }; 299 300 /* floppy driver configuration */ 301 int fdmatch(struct device *, struct cfdata *, void *); 302 void fdattach(struct device *, struct device *, void *); 303 304 CFATTACH_DECL(fd, sizeof(struct fd_softc), 305 fdmatch, fdattach, NULL, NULL); 306 307 extern struct cfdriver fd_cd; 308 309 dev_type_open(fdopen); 310 dev_type_close(fdclose); 311 dev_type_read(fdread); 312 dev_type_write(fdwrite); 313 dev_type_ioctl(fdioctl); 314 dev_type_strategy(fdstrategy); 315 316 const struct bdevsw fd_bdevsw = { 317 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 318 }; 319 320 const struct cdevsw fd_cdevsw = { 321 fdopen, fdclose, fdread, fdwrite, fdioctl, 322 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 323 }; 324 325 void fdgetdisklabel(dev_t); 326 int fd_get_parms(struct fd_softc *); 327 void fdstart(struct fd_softc *); 328 int fdprint(void *, const char *); 329 330 struct dkdriver fddkdriver = { fdstrategy }; 331 332 struct fd_type *fd_nvtotype(char *, int, int); 333 void fd_set_motor(struct fdc_softc *); 334 void fd_motor_off(void *); 335 void fd_motor_on(void *); 336 int fdcresult(struct fdc_softc *); 337 int fdc_wrfifo(struct fdc_softc *, uint8_t); 338 void fdcstart(struct fdc_softc *); 339 void fdcstatus(struct fdc_softc *, const char *); 340 void fdc_reset(struct fdc_softc *); 341 int fdc_diskchange(struct fdc_softc *); 342 void fdctimeout(void *); 343 void fdcpseudointr(void *); 344 int fdc_c_hwintr(void *); 345 void fdchwintr(void); 346 void fdcswintr(void *); 347 int fdcstate(struct fdc_softc *); 348 void fdcretry(struct fdc_softc *); 349 void fdfinish(struct fd_softc *, struct buf *); 350 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 351 void fd_do_eject(struct fd_softc *); 352 void fd_mountroot_hook(struct device *); 353 static int fdconf(struct fdc_softc *); 354 static void establish_chip_type( 355 struct fdc_softc *, 356 bus_space_tag_t, 357 bus_addr_t, 358 bus_size_t, 359 bus_space_handle_t); 360 361 #ifdef MEMORY_DISK_HOOKS 362 int fd_read_md_image(size_t *, void **); 363 #endif 364 365 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 366 367 int 368 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 369 { 370 struct mainbus_attach_args *ma = aux; 371 372 /* 373 * Floppy controller is on mainbus on sun4c. 374 */ 375 if (!CPU_ISSUN4C) 376 return (0); 377 378 /* sun4c PROMs call the controller "fd" */ 379 if (strcmp("fd", ma->ma_name) != 0) 380 return (0); 381 382 return (bus_space_probe(ma->ma_bustag, 383 ma->ma_paddr, 384 1, /* probe size */ 385 0, /* offset */ 386 0, /* flags */ 387 NULL, NULL)); 388 } 389 390 int 391 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 392 { 393 union obio_attach_args *uoba = aux; 394 struct sbus_attach_args *sa; 395 396 /* 397 * Floppy controller is on obio on sun4m. 398 */ 399 if (uoba->uoba_isobio4 != 0) 400 return (0); 401 402 sa = &uoba->uoba_sbus; 403 404 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 405 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 406 return (0); 407 408 return (bus_space_probe(sa->sa_bustag, 409 sbus_bus_addr(sa->sa_bustag, 410 sa->sa_slot, sa->sa_offset), 411 1, /* probe size */ 412 0, /* offset */ 413 0, /* flags */ 414 NULL, NULL)); 415 } 416 417 static void 418 establish_chip_type(struct fdc_softc *fdc, 419 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 420 bus_space_handle_t handle) 421 { 422 uint8_t v; 423 424 /* 425 * This hack from Chris Torek: apparently DOR really 426 * addresses MSR/DRS on a 82072. 427 * We used to rely on the VERSION command to tell the 428 * difference (which did not work). 429 */ 430 431 /* First, check the size of the register bank */ 432 if (size < 8) 433 /* It isn't a 82077 */ 434 return; 435 436 /* Then probe the DOR register offset */ 437 if (bus_space_probe(tag, addr, 438 1, /* probe size */ 439 FDREG77_DOR, /* offset */ 440 0, /* flags */ 441 NULL, NULL) == 0) { 442 443 /* It isn't a 82077 */ 444 return; 445 } 446 447 v = bus_space_read_1(tag, handle, FDREG77_DOR); 448 if (v == NE7_RQM) { 449 /* 450 * Value in DOR looks like it's really MSR 451 */ 452 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 453 v = bus_space_read_1(tag, handle, FDREG77_DOR); 454 if (v == NE7_RQM) { 455 /* 456 * The value in the DOR didn't stick; 457 * it isn't a 82077 458 */ 459 return; 460 } 461 } 462 463 fdc->sc_flags |= FDC_82077; 464 } 465 466 /* 467 * Arguments passed between fdcattach and fdprobe. 468 */ 469 struct fdc_attach_args { 470 int fa_drive; 471 struct fd_type *fa_deftype; 472 }; 473 474 /* 475 * Print the location of a disk drive (called just before attaching the 476 * the drive). If `fdc' is not NULL, the drive was found but was not 477 * in the system config file; print the drive name as well. 478 * Return QUIET (config_find ignores this if the device was configured) to 479 * avoid printing `fdN not configured' messages. 480 */ 481 int 482 fdprint(void *aux, const char *fdc) 483 { 484 register struct fdc_attach_args *fa = aux; 485 486 if (!fdc) 487 aprint_normal(" drive %d", fa->fa_drive); 488 return (QUIET); 489 } 490 491 /* 492 * Configure several parameters and features on the FDC. 493 * Return 0 on success. 494 */ 495 static int 496 fdconf(struct fdc_softc *fdc) 497 { 498 int vroom; 499 500 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 501 return (-1); 502 503 /* 504 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 505 * the PROM thinks is appropriate. 506 */ 507 if ((vroom = fdc->sc_status[7]) == 0) 508 vroom = 0x64; 509 510 /* Configure controller to use FIFO and Implied Seek */ 511 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 512 return (-1); 513 if (fdc_wrfifo(fdc, vroom) != 0) 514 return (-1); 515 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 516 return (-1); 517 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 518 return (-1); 519 /* No result phase for the NE7CMD_CFG command */ 520 521 if ((fdc->sc_flags & FDC_82077) != 0) { 522 /* Lock configuration across soft resets. */ 523 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 524 fdcresult(fdc) != 1) { 525 #ifdef DEBUG 526 printf("fdconf: CFGLOCK failed"); 527 #endif 528 return (-1); 529 } 530 } 531 532 return (0); 533 #if 0 534 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 535 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 536 if (fdc_debug) 537 printf("[version cmd]"); 538 } 539 #endif 540 } 541 542 void 543 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 544 { 545 struct fdc_softc *fdc = (void *)self; 546 struct mainbus_attach_args *ma = aux; 547 548 fdc->sc_bustag = ma->ma_bustag; 549 550 if (bus_space_map( 551 ma->ma_bustag, 552 ma->ma_paddr, 553 ma->ma_size, 554 BUS_SPACE_MAP_LINEAR, 555 &fdc->sc_handle) != 0) { 556 printf("%s: cannot map registers\n", self->dv_xname); 557 return; 558 } 559 560 establish_chip_type(fdc, 561 ma->ma_bustag, 562 ma->ma_paddr, 563 ma->ma_size, 564 fdc->sc_handle); 565 566 if (fdcattach(fdc, ma->ma_pri) != 0) 567 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 568 } 569 570 void 571 fdcattach_obio(struct device *parent, struct device *self, void *aux) 572 { 573 struct fdc_softc *fdc = (void *)self; 574 union obio_attach_args *uoba = aux; 575 struct sbus_attach_args *sa = &uoba->uoba_sbus; 576 577 if (sa->sa_nintr == 0) { 578 printf(": no interrupt line configured\n"); 579 return; 580 } 581 582 fdc->sc_bustag = sa->sa_bustag; 583 584 if (sbus_bus_map(sa->sa_bustag, 585 sa->sa_slot, sa->sa_offset, sa->sa_size, 586 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 587 printf("%s: cannot map control registers\n", 588 self->dv_xname); 589 return; 590 } 591 592 establish_chip_type(fdc, 593 sa->sa_bustag, 594 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 595 sa->sa_size, 596 fdc->sc_handle); 597 598 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 599 printf(": no drives attached\n"); 600 return; 601 } 602 603 if (fdcattach(fdc, sa->sa_pri) != 0) 604 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 605 } 606 607 int 608 fdcattach(struct fdc_softc *fdc, int pri) 609 { 610 struct fdc_attach_args fa; 611 int drive_attached; 612 char code; 613 614 callout_init(&fdc->sc_timo_ch, 0); 615 callout_init(&fdc->sc_intr_ch, 0); 616 617 fdc->sc_state = DEVIDLE; 618 fdc->sc_itask = FDC_ITASK_NONE; 619 fdc->sc_istatus = FDC_ISTATUS_NONE; 620 fdc->sc_flags |= FDC_EIS; 621 TAILQ_INIT(&fdc->sc_drives); 622 623 if ((fdc->sc_flags & FDC_82077) != 0) { 624 fdc->sc_reg_msr = FDREG77_MSR; 625 fdc->sc_reg_fifo = FDREG77_FIFO; 626 fdc->sc_reg_dor = FDREG77_DOR; 627 fdc->sc_reg_dir = FDREG77_DIR; 628 code = '7'; 629 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 630 } else { 631 fdc->sc_reg_msr = FDREG72_MSR; 632 fdc->sc_reg_fifo = FDREG72_FIFO; 633 fdc->sc_reg_dor = 0; 634 code = '2'; 635 } 636 637 /* 638 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 639 * Note: CFG_EFIFO is active-low, initial threshold value: 8 640 */ 641 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 642 if (fdconf(fdc) != 0) { 643 printf(": no drives attached\n"); 644 return (-1); 645 } 646 647 fdciop = &fdc->sc_io; 648 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 649 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 650 printf("\n%s: cannot register interrupt handler\n", 651 fdc->sc_dev.dv_xname); 652 return (-1); 653 } 654 655 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 656 if (fdc->sc_sicookie == NULL) { 657 printf("\n%s: cannot register soft interrupt handler\n", 658 fdc->sc_dev.dv_xname); 659 return (-1); 660 } 661 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 662 663 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 664 fdc->sc_dev.dv_xname, "intr"); 665 666 /* physical limit: four drives per controller. */ 667 drive_attached = 0; 668 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 669 fa.fa_deftype = NULL; /* unknown */ 670 fa.fa_deftype = &fd_types[0]; /* XXX */ 671 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 672 drive_attached = 1; 673 } 674 675 if (drive_attached == 0) { 676 /* XXX - dis-establish interrupts here */ 677 /* return (-1); */ 678 } 679 680 return (0); 681 } 682 683 int 684 fdmatch(struct device *parent, struct cfdata *match, void *aux) 685 { 686 struct fdc_softc *fdc = (void *)parent; 687 bus_space_tag_t t = fdc->sc_bustag; 688 bus_space_handle_t h = fdc->sc_handle; 689 struct fdc_attach_args *fa = aux; 690 int drive = fa->fa_drive; 691 int n, ok; 692 693 if (drive > 0) 694 /* XXX - for now, punt on more than one drive */ 695 return (0); 696 697 if ((fdc->sc_flags & FDC_82077) != 0) { 698 /* select drive and turn on motor */ 699 bus_space_write_1(t, h, fdc->sc_reg_dor, 700 drive | FDO_FRST | FDO_MOEN(drive)); 701 /* wait for motor to spin up */ 702 delay(250000); 703 } else { 704 auxregbisc(AUXIO4C_FDS, 0); 705 } 706 fdc->sc_nstat = 0; 707 fdc_wrfifo(fdc, NE7CMD_RECAL); 708 fdc_wrfifo(fdc, drive); 709 710 /* Wait for recalibration to complete */ 711 for (n = 0; n < 10000; n++) { 712 uint8_t v; 713 714 delay(1000); 715 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 716 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 717 /* wait a bit longer till device *really* is ready */ 718 delay(100000); 719 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 720 break; 721 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 722 /* 723 * Got `invalid command'; we interpret it 724 * to mean that the re-calibrate hasn't in 725 * fact finished yet 726 */ 727 continue; 728 break; 729 } 730 } 731 n = fdc->sc_nstat; 732 #ifdef FD_DEBUG 733 if (fdc_debug) { 734 int i; 735 printf("fdprobe: %d stati:", n); 736 for (i = 0; i < n; i++) 737 printf(" 0x%x", fdc->sc_status[i]); 738 printf("\n"); 739 } 740 #endif 741 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 742 743 /* turn off motor */ 744 if ((fdc->sc_flags & FDC_82077) != 0) { 745 /* deselect drive and turn motor off */ 746 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 747 } else { 748 auxregbisc(0, AUXIO4C_FDS); 749 } 750 751 return (ok); 752 } 753 754 /* 755 * Controller is working, and drive responded. Attach it. 756 */ 757 void 758 fdattach(struct device *parent, struct device *self, void *aux) 759 { 760 struct fdc_softc *fdc = (void *)parent; 761 struct fd_softc *fd = (void *)self; 762 struct fdc_attach_args *fa = aux; 763 struct fd_type *type = fa->fa_deftype; 764 int drive = fa->fa_drive; 765 766 callout_init(&fd->sc_motoron_ch, 0); 767 callout_init(&fd->sc_motoroff_ch, 0); 768 769 /* XXX Allow `flags' to override device type? */ 770 771 if (type) 772 printf(": %s %d cyl, %d head, %d sec\n", type->name, 773 type->cylinders, type->heads, type->sectrac); 774 else 775 printf(": density unknown\n"); 776 777 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 778 fd->sc_cylin = -1; 779 fd->sc_drive = drive; 780 fd->sc_deftype = type; 781 fdc->sc_fd[drive] = fd; 782 783 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 784 fdc_wrfifo(fdc, type->steprate); 785 /* XXX head load time == 6ms */ 786 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 787 788 /* 789 * Initialize and attach the disk structure. 790 */ 791 disk_init(&fd->sc_dk, fd->sc_dv.dv_xname, &fddkdriver); 792 disk_attach(&fd->sc_dk); 793 794 /* 795 * Establish a mountroot_hook anyway in case we booted 796 * with RB_ASKNAME and get selected as the boot device. 797 */ 798 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 799 800 /* Make sure the drive motor gets turned off at shutdown time. */ 801 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 802 } 803 804 inline struct fd_type * 805 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 806 { 807 int type = FDTYPE(dev); 808 809 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 810 return (NULL); 811 return (type ? &fd_types[type - 1] : fd->sc_deftype); 812 } 813 814 void 815 fdstrategy(struct buf *bp) 816 { 817 struct fd_softc *fd; 818 int unit = FDUNIT(bp->b_dev); 819 int sz; 820 int s; 821 822 /* Valid unit, controller, and request? */ 823 if (unit >= fd_cd.cd_ndevs || 824 (fd = fd_cd.cd_devs[unit]) == 0 || 825 bp->b_blkno < 0 || 826 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 827 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 828 (bp->b_flags & B_FORMAT) == 0)) { 829 bp->b_error = EINVAL; 830 goto done; 831 } 832 833 /* If it's a null transfer, return immediately. */ 834 if (bp->b_bcount == 0) 835 goto done; 836 837 sz = howmany(bp->b_bcount, DEV_BSIZE); 838 839 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 840 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 841 - bp->b_blkno; 842 if (sz == 0) { 843 /* If exactly at end of disk, return EOF. */ 844 bp->b_resid = bp->b_bcount; 845 goto done; 846 } 847 if (sz < 0) { 848 /* If past end of disk, return EINVAL. */ 849 bp->b_error = EINVAL; 850 goto done; 851 } 852 /* Otherwise, truncate request. */ 853 bp->b_bcount = sz << DEV_BSHIFT; 854 } 855 856 bp->b_rawblkno = bp->b_blkno; 857 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 858 (FD_BSIZE(fd) * fd->sc_type->seccyl); 859 860 #ifdef FD_DEBUG 861 if (fdc_debug > 1) 862 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 863 (long long)bp->b_blkno, bp->b_bcount, 864 (long long)fd->sc_blkno, bp->b_cylinder); 865 #endif 866 867 /* Queue transfer on drive, activate drive and controller if idle. */ 868 s = splbio(); 869 BUFQ_PUT(fd->sc_q, bp); 870 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 871 if (fd->sc_active == 0) 872 fdstart(fd); 873 #ifdef DIAGNOSTIC 874 else { 875 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 876 if (fdc->sc_state == DEVIDLE) { 877 printf("fdstrategy: controller inactive\n"); 878 fdcstart(fdc); 879 } 880 } 881 #endif 882 splx(s); 883 return; 884 885 done: 886 /* Toss transfer; we're done early. */ 887 biodone(bp); 888 } 889 890 void 891 fdstart(struct fd_softc *fd) 892 { 893 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 894 int active = fdc->sc_drives.tqh_first != 0; 895 896 /* Link into controller queue. */ 897 fd->sc_active = 1; 898 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 899 900 /* If controller not already active, start it. */ 901 if (!active) 902 fdcstart(fdc); 903 } 904 905 void 906 fdfinish(struct fd_softc *fd, struct buf *bp) 907 { 908 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 909 910 /* 911 * Move this drive to the end of the queue to give others a `fair' 912 * chance. We only force a switch if N operations are completed while 913 * another drive is waiting to be serviced, since there is a long motor 914 * startup delay whenever we switch. 915 */ 916 (void)BUFQ_GET(fd->sc_q); 917 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 918 fd->sc_ops = 0; 919 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 920 if (BUFQ_PEEK(fd->sc_q) != NULL) { 921 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 922 } else 923 fd->sc_active = 0; 924 } 925 bp->b_resid = fd->sc_bcount; 926 fd->sc_skip = 0; 927 928 biodone(bp); 929 /* turn off motor 5s from now */ 930 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 931 fdc->sc_state = DEVIDLE; 932 } 933 934 void 935 fdc_reset(struct fdc_softc *fdc) 936 { 937 bus_space_tag_t t = fdc->sc_bustag; 938 bus_space_handle_t h = fdc->sc_handle; 939 940 if ((fdc->sc_flags & FDC_82077) != 0) { 941 bus_space_write_1(t, h, fdc->sc_reg_dor, 942 FDO_FDMAEN | FDO_MOEN(0)); 943 } 944 945 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 946 delay(10); 947 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 948 949 if ((fdc->sc_flags & FDC_82077) != 0) { 950 bus_space_write_1(t, h, fdc->sc_reg_dor, 951 FDO_FRST | FDO_FDMAEN | FDO_DS); 952 } 953 #ifdef FD_DEBUG 954 if (fdc_debug) 955 printf("fdc reset\n"); 956 #endif 957 } 958 959 void 960 fd_set_motor(struct fdc_softc *fdc) 961 { 962 struct fd_softc *fd; 963 u_char status; 964 int n; 965 966 if ((fdc->sc_flags & FDC_82077) != 0) { 967 status = FDO_FRST | FDO_FDMAEN; 968 if ((fd = fdc->sc_drives.tqh_first) != NULL) 969 status |= fd->sc_drive; 970 971 for (n = 0; n < 4; n++) 972 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 973 status |= FDO_MOEN(n); 974 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 975 fdc->sc_reg_dor, status); 976 } else { 977 978 for (n = 0; n < 4; n++) { 979 if ((fd = fdc->sc_fd[n]) != NULL && 980 (fd->sc_flags & FD_MOTOR) != 0) { 981 auxregbisc(AUXIO4C_FDS, 0); 982 return; 983 } 984 } 985 auxregbisc(0, AUXIO4C_FDS); 986 } 987 } 988 989 void 990 fd_motor_off(void *arg) 991 { 992 struct fd_softc *fd = arg; 993 int s; 994 995 s = splbio(); 996 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 997 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 998 splx(s); 999 } 1000 1001 void 1002 fd_motor_on(void *arg) 1003 { 1004 struct fd_softc *fd = arg; 1005 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1006 int s; 1007 1008 s = splbio(); 1009 fd->sc_flags &= ~FD_MOTOR_WAIT; 1010 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1011 (void) fdcstate(fdc); 1012 splx(s); 1013 } 1014 1015 /* 1016 * Get status bytes off the FDC after a command has finished 1017 * Returns the number of status bytes read; -1 on error. 1018 * The return value is also stored in `sc_nstat'. 1019 */ 1020 int 1021 fdcresult(struct fdc_softc *fdc) 1022 { 1023 bus_space_tag_t t = fdc->sc_bustag; 1024 bus_space_handle_t h = fdc->sc_handle; 1025 int j, n = 0; 1026 1027 for (j = 10000; j; j--) { 1028 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1029 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1030 if (v == NE7_RQM) 1031 return (fdc->sc_nstat = n); 1032 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1033 if (n >= sizeof(fdc->sc_status)) { 1034 log(LOG_ERR, "fdcresult: overrun\n"); 1035 return (-1); 1036 } 1037 fdc->sc_status[n++] = 1038 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1039 } else 1040 delay(1); 1041 } 1042 1043 log(LOG_ERR, "fdcresult: timeout\n"); 1044 return (fdc->sc_nstat = -1); 1045 } 1046 1047 /* 1048 * Write a command byte to the FDC. 1049 * Returns 0 on success; -1 on failure (i.e. timeout) 1050 */ 1051 int 1052 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1053 { 1054 bus_space_tag_t t = fdc->sc_bustag; 1055 bus_space_handle_t h = fdc->sc_handle; 1056 int i; 1057 1058 for (i = 100000; i-- > 0;) { 1059 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1060 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1061 /* The chip is ready */ 1062 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1063 return (0); 1064 } 1065 delay(1); 1066 } 1067 return (-1); 1068 } 1069 1070 int 1071 fdc_diskchange(struct fdc_softc *fdc) 1072 { 1073 1074 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1075 bus_space_tag_t t = fdc->sc_bustag; 1076 bus_space_handle_t h = fdc->sc_handle; 1077 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1078 return ((v & FDI_DCHG) != 0); 1079 } else if (CPU_ISSUN4C) { 1080 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1081 } 1082 return (0); 1083 } 1084 1085 int 1086 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1087 { 1088 int unit, pmask; 1089 struct fd_softc *fd; 1090 struct fd_type *type; 1091 1092 unit = FDUNIT(dev); 1093 if (unit >= fd_cd.cd_ndevs) 1094 return (ENXIO); 1095 fd = fd_cd.cd_devs[unit]; 1096 if (fd == NULL) 1097 return (ENXIO); 1098 type = fd_dev_to_type(fd, dev); 1099 if (type == NULL) 1100 return (ENXIO); 1101 1102 if ((fd->sc_flags & FD_OPEN) != 0 && 1103 fd->sc_type != type) 1104 return (EBUSY); 1105 1106 fd->sc_type = type; 1107 fd->sc_cylin = -1; 1108 fd->sc_flags |= FD_OPEN; 1109 1110 /* 1111 * Only update the disklabel if we're not open anywhere else. 1112 */ 1113 if (fd->sc_dk.dk_openmask == 0) 1114 fdgetdisklabel(dev); 1115 1116 pmask = (1 << DISKPART(dev)); 1117 1118 switch (fmt) { 1119 case S_IFCHR: 1120 fd->sc_dk.dk_copenmask |= pmask; 1121 break; 1122 1123 case S_IFBLK: 1124 fd->sc_dk.dk_bopenmask |= pmask; 1125 break; 1126 } 1127 fd->sc_dk.dk_openmask = 1128 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1129 1130 return (0); 1131 } 1132 1133 int 1134 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1135 { 1136 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1137 int pmask = (1 << DISKPART(dev)); 1138 1139 fd->sc_flags &= ~FD_OPEN; 1140 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1141 1142 switch (fmt) { 1143 case S_IFCHR: 1144 fd->sc_dk.dk_copenmask &= ~pmask; 1145 break; 1146 1147 case S_IFBLK: 1148 fd->sc_dk.dk_bopenmask &= ~pmask; 1149 break; 1150 } 1151 fd->sc_dk.dk_openmask = 1152 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1153 1154 return (0); 1155 } 1156 1157 int 1158 fdread(dev_t dev, struct uio *uio, int flag) 1159 { 1160 1161 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1162 } 1163 1164 int 1165 fdwrite(dev_t dev, struct uio *uio, int flag) 1166 { 1167 1168 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1169 } 1170 1171 void 1172 fdcstart(struct fdc_softc *fdc) 1173 { 1174 1175 #ifdef DIAGNOSTIC 1176 /* only got here if controller's drive queue was inactive; should 1177 be in idle state */ 1178 if (fdc->sc_state != DEVIDLE) { 1179 printf("fdcstart: not idle\n"); 1180 return; 1181 } 1182 #endif 1183 (void) fdcstate(fdc); 1184 } 1185 1186 void 1187 fdcstatus(struct fdc_softc *fdc, const char *s) 1188 { 1189 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1190 int n; 1191 char bits[64]; 1192 1193 /* Just print last status */ 1194 n = fdc->sc_nstat; 1195 1196 #if 0 1197 /* 1198 * A 82072 seems to return <invalid command> on 1199 * gratuitous Sense Interrupt commands. 1200 */ 1201 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1202 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1203 (void) fdcresult(fdc); 1204 n = 2; 1205 } 1206 #endif 1207 1208 printf("%s: %s: state %d", 1209 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1210 1211 switch (n) { 1212 case 0: 1213 printf("\n"); 1214 break; 1215 case 2: 1216 printf(" (st0 %s cyl %d)\n", 1217 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1218 bits, sizeof(bits)), fdc->sc_status[1]); 1219 break; 1220 case 7: 1221 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1222 NE7_ST0BITS, bits, sizeof(bits))); 1223 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1224 NE7_ST1BITS, bits, sizeof(bits))); 1225 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1226 NE7_ST2BITS, bits, sizeof(bits))); 1227 printf(" cyl %d head %d sec %d)\n", 1228 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1229 break; 1230 #ifdef DIAGNOSTIC 1231 default: 1232 printf(" fdcstatus: weird size: %d\n", n); 1233 break; 1234 #endif 1235 } 1236 } 1237 1238 void 1239 fdctimeout(void *arg) 1240 { 1241 struct fdc_softc *fdc = arg; 1242 struct fd_softc *fd; 1243 int s; 1244 1245 s = splbio(); 1246 fd = fdc->sc_drives.tqh_first; 1247 if (fd == NULL) { 1248 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1249 fdc->sc_dev.dv_xname, 1250 fdc->sc_state, fdc->sc_istatus); 1251 fdc->sc_state = DEVIDLE; 1252 goto out; 1253 } 1254 1255 if (BUFQ_PEEK(fd->sc_q) != NULL) 1256 fdc->sc_state++; 1257 else 1258 fdc->sc_state = DEVIDLE; 1259 1260 (void) fdcstate(fdc); 1261 out: 1262 splx(s); 1263 1264 } 1265 1266 void 1267 fdcpseudointr(void *arg) 1268 { 1269 struct fdc_softc *fdc = arg; 1270 int s; 1271 1272 /* Just ensure it has the right spl. */ 1273 s = splbio(); 1274 (void) fdcstate(fdc); 1275 splx(s); 1276 } 1277 1278 1279 /* 1280 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1281 * handler is available. Unfortunately, we have no reliable way to 1282 * determine that the interrupt really came from the floppy controller; 1283 * just hope that the other devices that share this interrupt level 1284 * can do better.. 1285 */ 1286 int 1287 fdc_c_hwintr(void *arg) 1288 { 1289 struct fdc_softc *fdc = arg; 1290 bus_space_tag_t t = fdc->sc_bustag; 1291 bus_space_handle_t h = fdc->sc_handle; 1292 1293 switch (fdc->sc_itask) { 1294 case FDC_ITASK_NONE: 1295 return (0); 1296 case FDC_ITASK_SENSEI: 1297 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || 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_RESULT: 1304 if (fdcresult(fdc) == -1) 1305 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1306 else 1307 fdc->sc_istatus = FDC_ISTATUS_DONE; 1308 softint_schedule(fdc->sc_sicookie); 1309 return (1); 1310 case FDC_ITASK_DMA: 1311 /* Proceed with pseudo-DMA below */ 1312 break; 1313 default: 1314 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1315 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1316 softint_schedule(fdc->sc_sicookie); 1317 return (1); 1318 } 1319 1320 /* 1321 * Pseudo DMA in progress 1322 */ 1323 for (;;) { 1324 uint8_t msr; 1325 1326 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1327 1328 if ((msr & NE7_RQM) == 0) 1329 /* That's all this round */ 1330 break; 1331 1332 if ((msr & NE7_NDM) == 0) { 1333 /* Execution phase finished, get result. */ 1334 fdcresult(fdc); 1335 fdc->sc_istatus = FDC_ISTATUS_DONE; 1336 softint_schedule(fdc->sc_sicookie); 1337 break; 1338 } 1339 1340 if (fdc->sc_tc == 0) 1341 /* For some reason the controller wants to transfer 1342 more data then what we want to transfer. */ 1343 panic("fdc: overrun"); 1344 1345 /* Another byte can be transferred */ 1346 if ((msr & NE7_DIO) != 0) 1347 *fdc->sc_data = 1348 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1349 else 1350 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1351 *fdc->sc_data); 1352 1353 fdc->sc_data++; 1354 if (--fdc->sc_tc == 0) { 1355 FTC_FLIP; 1356 break; 1357 } 1358 } 1359 return (1); 1360 } 1361 1362 void 1363 fdcswintr(void *arg) 1364 { 1365 struct fdc_softc *fdc = arg; 1366 1367 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1368 /* This (software) interrupt is not for us */ 1369 return; 1370 1371 switch (fdc->sc_istatus) { 1372 case FDC_ISTATUS_ERROR: 1373 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1374 break; 1375 case FDC_ISTATUS_SPURIOUS: 1376 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1377 break; 1378 } 1379 1380 fdcstate(fdc); 1381 return; 1382 } 1383 1384 int 1385 fdcstate(struct fdc_softc *fdc) 1386 { 1387 1388 #define st0 fdc->sc_status[0] 1389 #define st1 fdc->sc_status[1] 1390 #define cyl fdc->sc_status[1] 1391 #define FDC_WRFIFO(fdc, c) do { \ 1392 if (fdc_wrfifo(fdc, (c))) { \ 1393 goto xxx; \ 1394 } \ 1395 } while(0) 1396 1397 struct fd_softc *fd; 1398 struct buf *bp; 1399 int read, head, sec, nblks; 1400 struct fd_type *type; 1401 struct ne7_fd_formb *finfo = NULL; 1402 1403 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1404 /* Prevent loop if the reset sequence produces errors */ 1405 if (fdc->sc_state != RESETCOMPLETE && 1406 fdc->sc_state != RECALWAIT && 1407 fdc->sc_state != RECALCOMPLETE) 1408 fdc->sc_state = DORESET; 1409 } 1410 1411 /* Clear I task/status field */ 1412 fdc->sc_istatus = FDC_ISTATUS_NONE; 1413 fdc->sc_itask = FDC_ITASK_NONE; 1414 1415 loop: 1416 /* Is there a drive for the controller to do a transfer with? */ 1417 fd = fdc->sc_drives.tqh_first; 1418 if (fd == NULL) { 1419 fdc->sc_state = DEVIDLE; 1420 return (0); 1421 } 1422 1423 /* Is there a transfer to this drive? If not, deactivate drive. */ 1424 bp = BUFQ_PEEK(fd->sc_q); 1425 if (bp == NULL) { 1426 fd->sc_ops = 0; 1427 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1428 fd->sc_active = 0; 1429 goto loop; 1430 } 1431 1432 if (bp->b_flags & B_FORMAT) 1433 finfo = (struct ne7_fd_formb *)bp->b_data; 1434 1435 switch (fdc->sc_state) { 1436 case DEVIDLE: 1437 fdc->sc_errors = 0; 1438 fd->sc_skip = 0; 1439 fd->sc_bcount = bp->b_bcount; 1440 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1441 callout_stop(&fd->sc_motoroff_ch); 1442 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1443 fdc->sc_state = MOTORWAIT; 1444 return (1); 1445 } 1446 if ((fd->sc_flags & FD_MOTOR) == 0) { 1447 /* Turn on the motor, being careful about pairing. */ 1448 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1449 if (ofd && ofd->sc_flags & FD_MOTOR) { 1450 callout_stop(&ofd->sc_motoroff_ch); 1451 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1452 } 1453 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1454 fd_set_motor(fdc); 1455 fdc->sc_state = MOTORWAIT; 1456 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1457 /* Allow .25s for motor to stabilize. */ 1458 callout_reset(&fd->sc_motoron_ch, hz / 4, 1459 fd_motor_on, fd); 1460 } else { 1461 fd->sc_flags &= ~FD_MOTOR_WAIT; 1462 goto loop; 1463 } 1464 return (1); 1465 } 1466 /* Make sure the right drive is selected. */ 1467 fd_set_motor(fdc); 1468 1469 if (fdc_diskchange(fdc)) 1470 goto dodskchg; 1471 1472 /*FALLTHROUGH*/ 1473 case DOSEEK: 1474 doseek: 1475 if ((fdc->sc_flags & FDC_EIS) && 1476 (bp->b_flags & B_FORMAT) == 0) { 1477 fd->sc_cylin = bp->b_cylinder; 1478 /* We use implied seek */ 1479 goto doio; 1480 } 1481 1482 if (fd->sc_cylin == bp->b_cylinder) 1483 goto doio; 1484 1485 fd->sc_cylin = -1; 1486 fdc->sc_state = SEEKWAIT; 1487 fdc->sc_nstat = 0; 1488 1489 iostat_seek(fd->sc_dk.dk_stats); 1490 1491 disk_busy(&fd->sc_dk); 1492 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1493 1494 /* specify command */ 1495 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1496 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1497 /* XXX head load time == 6ms */ 1498 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1499 1500 fdc->sc_itask = FDC_ITASK_SENSEI; 1501 /* seek function */ 1502 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1503 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1504 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1505 return (1); 1506 1507 case DODSKCHG: 1508 dodskchg: 1509 /* 1510 * Disk change: force a seek operation by going to cyl 1 1511 * followed by a recalibrate. 1512 */ 1513 disk_busy(&fd->sc_dk); 1514 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1515 fd->sc_cylin = -1; 1516 fdc->sc_nstat = 0; 1517 fdc->sc_state = DSKCHGWAIT; 1518 1519 fdc->sc_itask = FDC_ITASK_SENSEI; 1520 /* seek function */ 1521 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1522 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1523 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1524 return (1); 1525 1526 case DSKCHGWAIT: 1527 callout_stop(&fdc->sc_timo_ch); 1528 disk_unbusy(&fd->sc_dk, 0, 0); 1529 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1530 cyl != 1 * fd->sc_type->step) { 1531 fdcstatus(fdc, "dskchg seek failed"); 1532 fdc->sc_state = DORESET; 1533 } else 1534 fdc->sc_state = DORECAL; 1535 1536 if (fdc_diskchange(fdc)) { 1537 printf("%s: cannot clear disk change status\n", 1538 fdc->sc_dev.dv_xname); 1539 fdc->sc_state = DORESET; 1540 } 1541 goto loop; 1542 1543 case DOIO: 1544 doio: 1545 if (finfo != NULL) 1546 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1547 (char *)finfo; 1548 type = fd->sc_type; 1549 sec = fd->sc_blkno % type->seccyl; 1550 nblks = type->seccyl - sec; 1551 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1552 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1553 fd->sc_nblks = nblks; 1554 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1555 head = sec / type->sectrac; 1556 sec -= head * type->sectrac; 1557 #ifdef DIAGNOSTIC 1558 {int block; 1559 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1560 if (block != fd->sc_blkno) { 1561 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1562 #ifdef DDB 1563 Debugger(); 1564 #endif 1565 }} 1566 #endif 1567 read = bp->b_flags & B_READ; 1568 1569 /* Setup for pseudo DMA */ 1570 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1571 fdc->sc_tc = fd->sc_nbytes; 1572 1573 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1574 fdc->sc_reg_drs, type->rate); 1575 #ifdef FD_DEBUG 1576 if (fdc_debug > 1) 1577 printf("fdcstate: doio: %s drive %d " 1578 "track %d head %d sec %d nblks %d\n", 1579 finfo ? "format" : 1580 (read ? "read" : "write"), 1581 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1582 #endif 1583 fdc->sc_state = IOCOMPLETE; 1584 fdc->sc_itask = FDC_ITASK_DMA; 1585 fdc->sc_nstat = 0; 1586 1587 disk_busy(&fd->sc_dk); 1588 1589 /* allow 3 seconds for operation */ 1590 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1591 1592 if (finfo != NULL) { 1593 /* formatting */ 1594 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1595 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1596 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1597 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1598 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1599 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1600 } else { 1601 if (read) 1602 FDC_WRFIFO(fdc, NE7CMD_READ); 1603 else 1604 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1605 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1606 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1607 FDC_WRFIFO(fdc, head); 1608 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1609 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1610 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1611 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1612 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1613 } 1614 1615 return (1); /* will return later */ 1616 1617 case SEEKWAIT: 1618 callout_stop(&fdc->sc_timo_ch); 1619 fdc->sc_state = SEEKCOMPLETE; 1620 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1621 /* allow 1/50 second for heads to settle */ 1622 callout_reset(&fdc->sc_intr_ch, hz / 50, 1623 fdcpseudointr, fdc); 1624 return (1); /* will return later */ 1625 } 1626 /*FALLTHROUGH*/ 1627 case SEEKCOMPLETE: 1628 /* no data on seek */ 1629 disk_unbusy(&fd->sc_dk, 0, 0); 1630 1631 /* Make sure seek really happened. */ 1632 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1633 cyl != bp->b_cylinder * fd->sc_type->step) { 1634 #ifdef FD_DEBUG 1635 if (fdc_debug) 1636 fdcstatus(fdc, "seek failed"); 1637 #endif 1638 fdcretry(fdc); 1639 goto loop; 1640 } 1641 fd->sc_cylin = bp->b_cylinder; 1642 goto doio; 1643 1644 case IOTIMEDOUT: 1645 /* 1646 * Try to abort the I/O operation without resetting 1647 * the chip first. Poke TC and arrange to pick up 1648 * the timed out I/O command's status. 1649 */ 1650 fdc->sc_itask = FDC_ITASK_RESULT; 1651 fdc->sc_state = IOCLEANUPWAIT; 1652 fdc->sc_nstat = 0; 1653 /* 1/10 second should be enough */ 1654 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1655 FTC_FLIP; 1656 return (1); 1657 1658 case IOCLEANUPTIMEDOUT: 1659 case SEEKTIMEDOUT: 1660 case RECALTIMEDOUT: 1661 case RESETTIMEDOUT: 1662 case DSKCHGTIMEDOUT: 1663 fdcstatus(fdc, "timeout"); 1664 1665 /* All other timeouts always roll through to a chip reset */ 1666 fdcretry(fdc); 1667 1668 /* Force reset, no matter what fdcretry() says */ 1669 fdc->sc_state = DORESET; 1670 goto loop; 1671 1672 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1673 callout_stop(&fdc->sc_timo_ch); 1674 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1675 (bp->b_flags & B_READ)); 1676 fdcretry(fdc); 1677 goto loop; 1678 1679 case IOCOMPLETE: /* IO DONE, post-analyze */ 1680 callout_stop(&fdc->sc_timo_ch); 1681 1682 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1683 (bp->b_flags & B_READ)); 1684 1685 if (fdc->sc_nstat != 7 || st1 != 0 || 1686 ((st0 & 0xf8) != 0 && 1687 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1688 #ifdef FD_DEBUG 1689 if (fdc_debug) { 1690 fdcstatus(fdc, 1691 bp->b_flags & B_READ 1692 ? "read failed" : "write failed"); 1693 printf("blkno %lld nblks %d nstat %d tc %d\n", 1694 (long long)fd->sc_blkno, fd->sc_nblks, 1695 fdc->sc_nstat, fdc->sc_tc); 1696 } 1697 #endif 1698 if (fdc->sc_nstat == 7 && 1699 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1700 1701 /* 1702 * Silently retry overruns if no other 1703 * error bit is set. Adjust threshold. 1704 */ 1705 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1706 if (thr < 15) { 1707 thr++; 1708 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1709 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1710 #ifdef FD_DEBUG 1711 if (fdc_debug) 1712 printf("fdc: %d -> threshold\n", thr); 1713 #endif 1714 fdconf(fdc); 1715 fdc->sc_overruns = 0; 1716 } 1717 if (++fdc->sc_overruns < 3) { 1718 fdc->sc_state = DOIO; 1719 goto loop; 1720 } 1721 } 1722 fdcretry(fdc); 1723 goto loop; 1724 } 1725 if (fdc->sc_errors) { 1726 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1727 fd->sc_skip / FD_BSIZE(fd), 1728 (struct disklabel *)NULL); 1729 printf("\n"); 1730 fdc->sc_errors = 0; 1731 } else { 1732 if (--fdc->sc_overruns < -20) { 1733 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1734 if (thr > 0) { 1735 thr--; 1736 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1737 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1738 #ifdef FD_DEBUG 1739 if (fdc_debug) 1740 printf("fdc: %d -> threshold\n", thr); 1741 #endif 1742 fdconf(fdc); 1743 } 1744 fdc->sc_overruns = 0; 1745 } 1746 } 1747 fd->sc_blkno += fd->sc_nblks; 1748 fd->sc_skip += fd->sc_nbytes; 1749 fd->sc_bcount -= fd->sc_nbytes; 1750 if (finfo == NULL && fd->sc_bcount > 0) { 1751 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1752 goto doseek; 1753 } 1754 fdfinish(fd, bp); 1755 goto loop; 1756 1757 case DORESET: 1758 /* try a reset, keep motor on */ 1759 fd_set_motor(fdc); 1760 delay(100); 1761 fdc->sc_nstat = 0; 1762 fdc->sc_itask = FDC_ITASK_SENSEI; 1763 fdc->sc_state = RESETCOMPLETE; 1764 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1765 fdc_reset(fdc); 1766 return (1); /* will return later */ 1767 1768 case RESETCOMPLETE: 1769 callout_stop(&fdc->sc_timo_ch); 1770 fdconf(fdc); 1771 1772 /* FALLTHROUGH */ 1773 case DORECAL: 1774 fdc->sc_state = RECALWAIT; 1775 fdc->sc_itask = FDC_ITASK_SENSEI; 1776 fdc->sc_nstat = 0; 1777 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1778 /* recalibrate function */ 1779 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1780 FDC_WRFIFO(fdc, fd->sc_drive); 1781 return (1); /* will return later */ 1782 1783 case RECALWAIT: 1784 callout_stop(&fdc->sc_timo_ch); 1785 fdc->sc_state = RECALCOMPLETE; 1786 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1787 /* allow 1/30 second for heads to settle */ 1788 callout_reset(&fdc->sc_intr_ch, hz / 30, 1789 fdcpseudointr, fdc); 1790 return (1); /* will return later */ 1791 } 1792 1793 case RECALCOMPLETE: 1794 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1795 #ifdef FD_DEBUG 1796 if (fdc_debug) 1797 fdcstatus(fdc, "recalibrate failed"); 1798 #endif 1799 fdcretry(fdc); 1800 goto loop; 1801 } 1802 fd->sc_cylin = 0; 1803 goto doseek; 1804 1805 case MOTORWAIT: 1806 if (fd->sc_flags & FD_MOTOR_WAIT) 1807 return (1); /* time's not up yet */ 1808 goto doseek; 1809 1810 default: 1811 fdcstatus(fdc, "stray interrupt"); 1812 return (1); 1813 } 1814 #ifdef DIAGNOSTIC 1815 panic("fdcintr: impossible"); 1816 #endif 1817 1818 xxx: 1819 /* 1820 * We get here if the chip locks up in FDC_WRFIFO() 1821 * Cancel any operation and schedule a reset 1822 */ 1823 callout_stop(&fdc->sc_timo_ch); 1824 fdcretry(fdc); 1825 (fdc)->sc_state = DORESET; 1826 goto loop; 1827 1828 #undef st0 1829 #undef st1 1830 #undef cyl 1831 } 1832 1833 void 1834 fdcretry(struct fdc_softc *fdc) 1835 { 1836 struct fd_softc *fd; 1837 struct buf *bp; 1838 int error = EIO; 1839 1840 fd = fdc->sc_drives.tqh_first; 1841 bp = BUFQ_PEEK(fd->sc_q); 1842 1843 fdc->sc_overruns = 0; 1844 if (fd->sc_opts & FDOPT_NORETRY) 1845 goto fail; 1846 1847 switch (fdc->sc_errors) { 1848 case 0: 1849 if (fdc->sc_nstat == 7 && 1850 (fdc->sc_status[0] & 0xd8) == 0x40 && 1851 (fdc->sc_status[1] & 0x2) == 0x2) { 1852 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1853 error = EROFS; 1854 goto failsilent; 1855 } 1856 /* try again */ 1857 fdc->sc_state = 1858 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1859 break; 1860 1861 case 1: case 2: case 3: 1862 /* didn't work; try recalibrating */ 1863 fdc->sc_state = DORECAL; 1864 break; 1865 1866 case 4: 1867 if (fdc->sc_nstat == 7 && 1868 fdc->sc_status[0] == 0 && 1869 fdc->sc_status[1] == 0 && 1870 fdc->sc_status[2] == 0) { 1871 /* 1872 * We've retried a few times and we've got 1873 * valid status and all three status bytes 1874 * are zero. Assume this condition is the 1875 * result of no disk loaded into the drive. 1876 */ 1877 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1878 error = ENODEV; 1879 goto failsilent; 1880 } 1881 1882 /* still no go; reset the bastard */ 1883 fdc->sc_state = DORESET; 1884 break; 1885 1886 default: 1887 fail: 1888 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1889 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1890 fd->sc_skip / FD_BSIZE(fd), 1891 (struct disklabel *)NULL); 1892 printf("\n"); 1893 fdcstatus(fdc, "controller status"); 1894 } 1895 1896 failsilent: 1897 bp->b_error = error; 1898 fdfinish(fd, bp); 1899 } 1900 fdc->sc_errors++; 1901 } 1902 1903 int 1904 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1905 { 1906 struct fd_softc *fd; 1907 struct fdc_softc *fdc; 1908 struct fdformat_parms *form_parms; 1909 struct fdformat_cmd *form_cmd; 1910 struct ne7_fd_formb *fd_formb; 1911 int il[FD_MAX_NSEC + 1]; 1912 int unit; 1913 int i, j; 1914 int error; 1915 1916 unit = FDUNIT(dev); 1917 if (unit >= fd_cd.cd_ndevs) 1918 return (ENXIO); 1919 1920 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1921 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 1922 1923 switch (cmd) { 1924 case DIOCGDINFO: 1925 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1926 return 0; 1927 1928 case DIOCWLABEL: 1929 if ((flag & FWRITE) == 0) 1930 return EBADF; 1931 /* XXX do something */ 1932 return (0); 1933 1934 case DIOCWDINFO: 1935 if ((flag & FWRITE) == 0) 1936 return (EBADF); 1937 1938 error = setdisklabel(fd->sc_dk.dk_label, 1939 (struct disklabel *)addr, 0, 1940 fd->sc_dk.dk_cpulabel); 1941 if (error) 1942 return (error); 1943 1944 error = writedisklabel(dev, fdstrategy, 1945 fd->sc_dk.dk_label, 1946 fd->sc_dk.dk_cpulabel); 1947 return (error); 1948 1949 case DIOCLOCK: 1950 /* 1951 * Nothing to do here, really. 1952 */ 1953 return (0); 1954 1955 case DIOCEJECT: 1956 if (*(int *)addr == 0) { 1957 int part = DISKPART(dev); 1958 /* 1959 * Don't force eject: check that we are the only 1960 * partition open. If so, unlock it. 1961 */ 1962 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1963 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1964 fd->sc_dk.dk_openmask) { 1965 return (EBUSY); 1966 } 1967 } 1968 /* FALLTHROUGH */ 1969 case ODIOCEJECT: 1970 fd_do_eject(fd); 1971 return (0); 1972 1973 case FDIOCGETFORMAT: 1974 form_parms = (struct fdformat_parms *)addr; 1975 form_parms->fdformat_version = FDFORMAT_VERSION; 1976 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1977 form_parms->ncyl = fd->sc_type->cylinders; 1978 form_parms->nspt = fd->sc_type->sectrac; 1979 form_parms->ntrk = fd->sc_type->heads; 1980 form_parms->stepspercyl = fd->sc_type->step; 1981 form_parms->gaplen = fd->sc_type->gap2; 1982 form_parms->fillbyte = fd->sc_type->fillbyte; 1983 form_parms->interleave = fd->sc_type->interleave; 1984 switch (fd->sc_type->rate) { 1985 case FDC_500KBPS: 1986 form_parms->xfer_rate = 500 * 1024; 1987 break; 1988 case FDC_300KBPS: 1989 form_parms->xfer_rate = 300 * 1024; 1990 break; 1991 case FDC_250KBPS: 1992 form_parms->xfer_rate = 250 * 1024; 1993 break; 1994 default: 1995 return (EINVAL); 1996 } 1997 return (0); 1998 1999 case FDIOCSETFORMAT: 2000 if ((flag & FWRITE) == 0) 2001 return (EBADF); /* must be opened for writing */ 2002 2003 form_parms = (struct fdformat_parms *)addr; 2004 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2005 return (EINVAL);/* wrong version of formatting prog */ 2006 2007 i = form_parms->nbps >> 7; 2008 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2009 i & ~(1 << (ffs(i)-1))) 2010 /* not a power-of-two multiple of 128 */ 2011 return (EINVAL); 2012 2013 switch (form_parms->xfer_rate) { 2014 case 500 * 1024: 2015 fd->sc_type->rate = FDC_500KBPS; 2016 break; 2017 case 300 * 1024: 2018 fd->sc_type->rate = FDC_300KBPS; 2019 break; 2020 case 250 * 1024: 2021 fd->sc_type->rate = FDC_250KBPS; 2022 break; 2023 default: 2024 return (EINVAL); 2025 } 2026 2027 if (form_parms->nspt > FD_MAX_NSEC || 2028 form_parms->fillbyte > 0xff || 2029 form_parms->interleave > 0xff) 2030 return EINVAL; 2031 fd->sc_type->sectrac = form_parms->nspt; 2032 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2033 return EINVAL; 2034 fd->sc_type->heads = form_parms->ntrk; 2035 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2036 fd->sc_type->secsize = ffs(i)-1; 2037 fd->sc_type->gap2 = form_parms->gaplen; 2038 fd->sc_type->cylinders = form_parms->ncyl; 2039 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2040 form_parms->nbps / DEV_BSIZE; 2041 fd->sc_type->step = form_parms->stepspercyl; 2042 fd->sc_type->fillbyte = form_parms->fillbyte; 2043 fd->sc_type->interleave = form_parms->interleave; 2044 return (0); 2045 2046 case FDIOCFORMAT_TRACK: 2047 if((flag & FWRITE) == 0) 2048 /* must be opened for writing */ 2049 return (EBADF); 2050 form_cmd = (struct fdformat_cmd *)addr; 2051 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2052 /* wrong version of formatting prog */ 2053 return (EINVAL); 2054 2055 if (form_cmd->head >= fd->sc_type->heads || 2056 form_cmd->cylinder >= fd->sc_type->cylinders) { 2057 return (EINVAL); 2058 } 2059 2060 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2061 M_TEMP, M_NOWAIT); 2062 if (fd_formb == 0) 2063 return (ENOMEM); 2064 2065 fd_formb->head = form_cmd->head; 2066 fd_formb->cyl = form_cmd->cylinder; 2067 fd_formb->transfer_rate = fd->sc_type->rate; 2068 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2069 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2070 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2071 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2072 2073 bzero(il, sizeof il); 2074 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2075 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2076 j++; 2077 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2078 j += fd->sc_type->interleave; 2079 } 2080 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2081 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2082 fd_formb->fd_formb_headno(i) = form_cmd->head; 2083 fd_formb->fd_formb_secno(i) = il[i+1]; 2084 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2085 } 2086 2087 error = fdformat(dev, fd_formb, l->l_proc); 2088 free(fd_formb, M_TEMP); 2089 return error; 2090 2091 case FDIOCGETOPTS: /* get drive options */ 2092 *(int *)addr = fd->sc_opts; 2093 return (0); 2094 2095 case FDIOCSETOPTS: /* set drive options */ 2096 fd->sc_opts = *(int *)addr; 2097 return (0); 2098 2099 #ifdef FD_DEBUG 2100 case _IO('f', 100): 2101 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2102 fdcresult(fdc); 2103 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2104 for (i = 0; i < fdc->sc_nstat; i++) 2105 printf(" 0x%x", fdc->sc_status[i]); 2106 printf(">\n"); 2107 return (0); 2108 2109 case _IOW('f', 101, int): 2110 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2111 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2112 fdconf(fdc); 2113 return (0); 2114 2115 case _IO('f', 102): 2116 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2117 fdcresult(fdc); 2118 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2119 for (i=0; i< fdc->sc_nstat; i++) 2120 printf(" 0x%x", fdc->sc_status[i]); 2121 printf(">\n"); 2122 return (0); 2123 #endif 2124 default: 2125 return (ENOTTY); 2126 } 2127 2128 #ifdef DIAGNOSTIC 2129 panic("fdioctl: impossible"); 2130 #endif 2131 } 2132 2133 int 2134 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2135 { 2136 int rv = 0; 2137 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2138 struct fd_type *type = fd->sc_type; 2139 struct buf *bp; 2140 2141 /* set up a buffer header for fdstrategy() */ 2142 bp = getiobuf_nowait(); 2143 if (bp == NULL) 2144 return (ENOBUFS); 2145 2146 bp->b_vp = NULL; 2147 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2148 bp->b_proc = p; 2149 bp->b_dev = dev; 2150 2151 /* 2152 * Calculate a fake blkno, so fdstrategy() would initiate a 2153 * seek to the requested cylinder. 2154 */ 2155 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2156 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2157 / DEV_BSIZE; 2158 2159 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2160 bp->b_data = (void *)finfo; 2161 2162 #ifdef FD_DEBUG 2163 if (fdc_debug) { 2164 int i; 2165 2166 printf("fdformat: blkno 0x%llx count %d\n", 2167 (unsigned long long)bp->b_blkno, bp->b_bcount); 2168 2169 printf("\tcyl:\t%d\n", finfo->cyl); 2170 printf("\thead:\t%d\n", finfo->head); 2171 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2172 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2173 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2174 printf("\ttrack data:"); 2175 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2176 printf(" [c%d h%d s%d]", 2177 finfo->fd_formb_cylno(i), 2178 finfo->fd_formb_headno(i), 2179 finfo->fd_formb_secno(i) ); 2180 if (finfo->fd_formb_secsize(i) != 2) 2181 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2182 } 2183 printf("\n"); 2184 } 2185 #endif 2186 2187 /* now do the format */ 2188 fdstrategy(bp); 2189 2190 /* ...and wait for it to complete */ 2191 rv = biowait(bp); 2192 putiobuf(bp); 2193 return (rv); 2194 } 2195 2196 void 2197 fdgetdisklabel(dev_t dev) 2198 { 2199 int unit = FDUNIT(dev), i; 2200 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2201 struct disklabel *lp = fd->sc_dk.dk_label; 2202 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2203 2204 bzero(lp, sizeof(struct disklabel)); 2205 bzero(lp, sizeof(struct cpu_disklabel)); 2206 2207 lp->d_type = DTYPE_FLOPPY; 2208 lp->d_secsize = FD_BSIZE(fd); 2209 lp->d_secpercyl = fd->sc_type->seccyl; 2210 lp->d_nsectors = fd->sc_type->sectrac; 2211 lp->d_ncylinders = fd->sc_type->cylinders; 2212 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2213 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2214 lp->d_rpm = 3600; /* XXX like it matters... */ 2215 2216 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2217 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2218 lp->d_interleave = 1; 2219 2220 lp->d_partitions[RAW_PART].p_offset = 0; 2221 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2222 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2223 lp->d_npartitions = RAW_PART + 1; 2224 2225 lp->d_magic = DISKMAGIC; 2226 lp->d_magic2 = DISKMAGIC; 2227 lp->d_checksum = dkcksum(lp); 2228 2229 /* 2230 * Call the generic disklabel extraction routine. If there's 2231 * not a label there, fake it. 2232 */ 2233 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2234 strncpy(lp->d_packname, "default label", 2235 sizeof(lp->d_packname)); 2236 /* 2237 * Reset the partition info; it might have gotten 2238 * trashed in readdisklabel(). 2239 * 2240 * XXX Why do we have to do this? readdisklabel() 2241 * should be safe... 2242 */ 2243 for (i = 0; i < MAXPARTITIONS; ++i) { 2244 lp->d_partitions[i].p_offset = 0; 2245 if (i == RAW_PART) { 2246 lp->d_partitions[i].p_size = 2247 lp->d_secpercyl * lp->d_ncylinders; 2248 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2249 } else { 2250 lp->d_partitions[i].p_size = 0; 2251 lp->d_partitions[i].p_fstype = FS_UNUSED; 2252 } 2253 } 2254 lp->d_npartitions = RAW_PART + 1; 2255 } 2256 } 2257 2258 void 2259 fd_do_eject(struct fd_softc *fd) 2260 { 2261 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2262 2263 if (CPU_ISSUN4C) { 2264 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2265 delay(10); 2266 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2267 return; 2268 } 2269 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2270 bus_space_tag_t t = fdc->sc_bustag; 2271 bus_space_handle_t h = fdc->sc_handle; 2272 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2273 2274 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2275 delay(10); 2276 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2277 return; 2278 } 2279 } 2280 2281 /* ARGSUSED */ 2282 void 2283 fd_mountroot_hook(struct device *dev) 2284 { 2285 int c; 2286 2287 fd_do_eject((struct fd_softc *)dev); 2288 printf("Insert filesystem floppy and press return."); 2289 for (;;) { 2290 c = cngetc(); 2291 if ((c == '\r') || (c == '\n')) { 2292 printf("\n"); 2293 break; 2294 } 2295 } 2296 } 2297 2298 #ifdef MEMORY_DISK_HOOKS 2299 2300 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2301 2302 int 2303 fd_read_md_image(size_t *sizep, void * *addrp) 2304 { 2305 struct buf buf, *bp = &buf; 2306 dev_t dev; 2307 off_t offset; 2308 void *addr; 2309 2310 dev = makedev(54,0); /* XXX */ 2311 2312 MALLOC(addr, void *, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2313 *addrp = addr; 2314 2315 if (fdopen(dev, 0, S_IFCHR, NULL)) 2316 panic("fd: mountroot: fdopen"); 2317 2318 offset = 0; 2319 2320 for (;;) { 2321 bp->b_dev = dev; 2322 bp->b_error = 0; 2323 bp->b_resid = 0; 2324 bp->b_proc = NULL; 2325 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2326 bp->b_blkno = btodb(offset); 2327 bp->b_bcount = DEV_BSIZE; 2328 bp->b_data = addr; 2329 fdstrategy(bp); 2330 while ((bp->b_flags & B_DONE) == 0) { 2331 tsleep((void *)bp, PRIBIO + 1, "physio", 0); 2332 } 2333 if (bp->b_error) 2334 panic("fd: mountroot: fdread error %d", bp->b_error); 2335 2336 if (bp->b_resid != 0) 2337 break; 2338 2339 addr = (char *)addr + DEV_BSIZE; 2340 offset += DEV_BSIZE; 2341 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2342 break; 2343 } 2344 (void)fdclose(dev, 0, S_IFCHR, NULL); 2345 *sizep = offset; 2346 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2347 return (0); 2348 } 2349 #endif /* MEMORY_DISK_HOOKS */ 2350