fd.c revision 1.143
1 /* $NetBSD: fd.c,v 1.143 2008/12/17 20:51:32 cegger 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 1.143 2008/12/17 20:51:32 cegger Exp $"); 105 106 #include "opt_ddb.h" 107 #include "opt_md.h" 108 109 #include <sys/param.h> 110 #include <sys/systm.h> 111 #include <sys/callout.h> 112 #include <sys/kernel.h> 113 #include <sys/file.h> 114 #include <sys/ioctl.h> 115 #include <sys/device.h> 116 #include <sys/disklabel.h> 117 #include <sys/disk.h> 118 #include <sys/fdio.h> 119 #include <sys/buf.h> 120 #include <sys/bufq.h> 121 #include <sys/malloc.h> 122 #include <sys/proc.h> 123 #include <sys/uio.h> 124 #include <sys/stat.h> 125 #include <sys/syslog.h> 126 #include <sys/queue.h> 127 #include <sys/conf.h> 128 #include <sys/intr.h> 129 130 #include <dev/cons.h> 131 132 #include <uvm/uvm_extern.h> 133 134 #include <machine/autoconf.h> 135 136 #include <sparc/sparc/auxreg.h> 137 #include <sparc/dev/fdreg.h> 138 #include <sparc/dev/fdvar.h> 139 140 #define FDUNIT(dev) (minor(dev) / 8) 141 #define FDTYPE(dev) (minor(dev) % 8) 142 143 /* (mis)use device use flag to identify format operation */ 144 #define B_FORMAT B_DEVPRIVATE 145 146 #define FD_DEBUG 147 #ifdef FD_DEBUG 148 int fdc_debug = 0; 149 #endif 150 151 enum fdc_state { 152 DEVIDLE = 0, 153 MOTORWAIT, /* 1 */ 154 DOSEEK, /* 2 */ 155 SEEKWAIT, /* 3 */ 156 SEEKTIMEDOUT, /* 4 */ 157 SEEKCOMPLETE, /* 5 */ 158 DOIO, /* 6 */ 159 IOCOMPLETE, /* 7 */ 160 IOTIMEDOUT, /* 8 */ 161 IOCLEANUPWAIT, /* 9 */ 162 IOCLEANUPTIMEDOUT,/*10 */ 163 DORESET, /* 11 */ 164 RESETCOMPLETE, /* 12 */ 165 RESETTIMEDOUT, /* 13 */ 166 DORECAL, /* 14 */ 167 RECALWAIT, /* 15 */ 168 RECALTIMEDOUT, /* 16 */ 169 RECALCOMPLETE, /* 17 */ 170 DODSKCHG, /* 18 */ 171 DSKCHGWAIT, /* 19 */ 172 DSKCHGTIMEDOUT, /* 20 */ 173 }; 174 175 /* software state, per controller */ 176 struct fdc_softc { 177 struct device sc_dev; /* boilerplate */ 178 bus_space_tag_t sc_bustag; 179 180 struct callout sc_timo_ch; /* timeout callout */ 181 struct callout sc_intr_ch; /* pseudo-intr callout */ 182 183 struct fd_softc *sc_fd[4]; /* pointers to children */ 184 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 185 enum fdc_state sc_state; 186 int sc_flags; 187 #define FDC_82077 0x01 188 #define FDC_NEEDHEADSETTLE 0x02 189 #define FDC_EIS 0x04 190 #define FDC_NEEDMOTORWAIT 0x08 191 int sc_errors; /* number of retries so far */ 192 int sc_overruns; /* number of DMA overruns */ 193 int sc_cfg; /* current configuration */ 194 struct fdcio sc_io; 195 #define sc_handle sc_io.fdcio_handle 196 #define sc_reg_msr sc_io.fdcio_reg_msr 197 #define sc_reg_fifo sc_io.fdcio_reg_fifo 198 #define sc_reg_dor sc_io.fdcio_reg_dor 199 #define sc_reg_dir sc_io.fdcio_reg_dir 200 #define sc_reg_drs sc_io.fdcio_reg_msr 201 #define sc_itask sc_io.fdcio_itask 202 #define sc_istatus sc_io.fdcio_istatus 203 #define sc_data sc_io.fdcio_data 204 #define sc_tc sc_io.fdcio_tc 205 #define sc_nstat sc_io.fdcio_nstat 206 #define sc_status sc_io.fdcio_status 207 #define sc_intrcnt sc_io.fdcio_intrcnt 208 209 void *sc_sicookie; /* softintr(9) cookie */ 210 }; 211 212 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 213 214 /* controller driver configuration */ 215 int fdcmatch_mainbus(struct device *, struct cfdata *, void *); 216 int fdcmatch_obio(struct device *, struct cfdata *, void *); 217 void fdcattach_mainbus(struct device *, struct device *, void *); 218 void fdcattach_obio(struct device *, struct device *, void *); 219 220 int fdcattach(struct fdc_softc *, int); 221 222 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc), 223 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 224 225 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc), 226 fdcmatch_obio, fdcattach_obio, NULL, NULL); 227 228 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 229 230 /* 231 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 232 * we tell them apart. 233 */ 234 struct fd_type { 235 int sectrac; /* sectors per track */ 236 int heads; /* number of heads */ 237 int seccyl; /* sectors per cylinder */ 238 int secsize; /* size code for sectors */ 239 int datalen; /* data len when secsize = 0 */ 240 int steprate; /* step rate and head unload time */ 241 int gap1; /* gap len between sectors */ 242 int gap2; /* formatting gap */ 243 int cylinders; /* total num of cylinders */ 244 int size; /* size of disk in sectors */ 245 int step; /* steps per cylinder */ 246 int rate; /* transfer speed code */ 247 int fillbyte; /* format fill byte */ 248 int interleave; /* interleave factor (formatting) */ 249 const char *name; 250 }; 251 252 /* The order of entries in the following table is important -- BEWARE! */ 253 struct fd_type fd_types[] = { 254 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 255 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 256 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 257 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 258 }; 259 260 /* software state, per disk (with up to 4 disks per ctlr) */ 261 struct fd_softc { 262 struct device sc_dv; /* generic device info */ 263 struct disk sc_dk; /* generic disk info */ 264 265 struct fd_type *sc_deftype; /* default type descriptor */ 266 struct fd_type *sc_type; /* current type descriptor */ 267 268 struct callout sc_motoron_ch; 269 struct callout sc_motoroff_ch; 270 271 daddr_t sc_blkno; /* starting block number */ 272 int sc_bcount; /* byte count left */ 273 int sc_skip; /* bytes already transferred */ 274 int sc_nblks; /* number of blocks currently transferring */ 275 int sc_nbytes; /* number of bytes currently transferring */ 276 277 int sc_drive; /* physical unit number */ 278 int sc_flags; 279 #define FD_OPEN 0x01 /* it's open */ 280 #define FD_MOTOR 0x02 /* motor should be on */ 281 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 282 int sc_cylin; /* where we think the head is */ 283 int sc_opts; /* user-set options */ 284 285 void *sc_sdhook; /* shutdownhook cookie */ 286 287 TAILQ_ENTRY(fd_softc) sc_drivechain; 288 int sc_ops; /* I/O ops since last switch */ 289 struct bufq_state *sc_q;/* pending I/O requests */ 290 int sc_active; /* number of active I/O requests */ 291 }; 292 293 /* floppy driver configuration */ 294 int fdmatch(struct device *, struct cfdata *, void *); 295 void fdattach(struct device *, struct device *, void *); 296 297 CFATTACH_DECL(fd, sizeof(struct fd_softc), 298 fdmatch, fdattach, NULL, NULL); 299 300 extern struct cfdriver fd_cd; 301 302 dev_type_open(fdopen); 303 dev_type_close(fdclose); 304 dev_type_read(fdread); 305 dev_type_write(fdwrite); 306 dev_type_ioctl(fdioctl); 307 dev_type_strategy(fdstrategy); 308 309 const struct bdevsw fd_bdevsw = { 310 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 311 }; 312 313 const struct cdevsw fd_cdevsw = { 314 fdopen, fdclose, fdread, fdwrite, fdioctl, 315 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 316 }; 317 318 void fdgetdisklabel(dev_t); 319 int fd_get_parms(struct fd_softc *); 320 void fdstart(struct fd_softc *); 321 int fdprint(void *, const char *); 322 323 struct dkdriver fddkdriver = { fdstrategy }; 324 325 struct fd_type *fd_nvtotype(char *, int, int); 326 void fd_set_motor(struct fdc_softc *); 327 void fd_motor_off(void *); 328 void fd_motor_on(void *); 329 int fdcresult(struct fdc_softc *); 330 int fdc_wrfifo(struct fdc_softc *, uint8_t); 331 void fdcstart(struct fdc_softc *); 332 void fdcstatus(struct fdc_softc *, const char *); 333 void fdc_reset(struct fdc_softc *); 334 int fdc_diskchange(struct fdc_softc *); 335 void fdctimeout(void *); 336 void fdcpseudointr(void *); 337 int fdc_c_hwintr(void *); 338 void fdchwintr(void); 339 void fdcswintr(void *); 340 int fdcstate(struct fdc_softc *); 341 void fdcretry(struct fdc_softc *); 342 void fdfinish(struct fd_softc *, struct buf *); 343 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 344 void fd_do_eject(struct fd_softc *); 345 void fd_mountroot_hook(struct device *); 346 static int fdconf(struct fdc_softc *); 347 static void establish_chip_type( 348 struct fdc_softc *, 349 bus_space_tag_t, 350 bus_addr_t, 351 bus_size_t, 352 bus_space_handle_t); 353 354 #ifdef MEMORY_DISK_HOOKS 355 int fd_read_md_image(size_t *, void **); 356 #endif 357 358 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 359 360 int 361 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux) 362 { 363 struct mainbus_attach_args *ma = aux; 364 365 /* 366 * Floppy controller is on mainbus on sun4c. 367 */ 368 if (!CPU_ISSUN4C) 369 return (0); 370 371 /* sun4c PROMs call the controller "fd" */ 372 if (strcmp("fd", ma->ma_name) != 0) 373 return (0); 374 375 return (bus_space_probe(ma->ma_bustag, 376 ma->ma_paddr, 377 1, /* probe size */ 378 0, /* offset */ 379 0, /* flags */ 380 NULL, NULL)); 381 } 382 383 int 384 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux) 385 { 386 union obio_attach_args *uoba = aux; 387 struct sbus_attach_args *sa; 388 389 /* 390 * Floppy controller is on obio on sun4m. 391 */ 392 if (uoba->uoba_isobio4 != 0) 393 return (0); 394 395 sa = &uoba->uoba_sbus; 396 397 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 398 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 399 return (0); 400 401 return (bus_space_probe(sa->sa_bustag, 402 sbus_bus_addr(sa->sa_bustag, 403 sa->sa_slot, sa->sa_offset), 404 1, /* probe size */ 405 0, /* offset */ 406 0, /* flags */ 407 NULL, NULL)); 408 } 409 410 static void 411 establish_chip_type(struct fdc_softc *fdc, 412 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 413 bus_space_handle_t handle) 414 { 415 uint8_t v; 416 417 /* 418 * This hack from Chris Torek: apparently DOR really 419 * addresses MSR/DRS on a 82072. 420 * We used to rely on the VERSION command to tell the 421 * difference (which did not work). 422 */ 423 424 /* First, check the size of the register bank */ 425 if (size < 8) 426 /* It isn't a 82077 */ 427 return; 428 429 /* Then probe the DOR register offset */ 430 if (bus_space_probe(tag, addr, 431 1, /* probe size */ 432 FDREG77_DOR, /* offset */ 433 0, /* flags */ 434 NULL, NULL) == 0) { 435 436 /* It isn't a 82077 */ 437 return; 438 } 439 440 v = bus_space_read_1(tag, handle, FDREG77_DOR); 441 if (v == NE7_RQM) { 442 /* 443 * Value in DOR looks like it's really MSR 444 */ 445 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 446 v = bus_space_read_1(tag, handle, FDREG77_DOR); 447 if (v == NE7_RQM) { 448 /* 449 * The value in the DOR didn't stick; 450 * it isn't a 82077 451 */ 452 return; 453 } 454 } 455 456 fdc->sc_flags |= FDC_82077; 457 } 458 459 /* 460 * Arguments passed between fdcattach and fdprobe. 461 */ 462 struct fdc_attach_args { 463 int fa_drive; 464 struct fd_type *fa_deftype; 465 }; 466 467 /* 468 * Print the location of a disk drive (called just before attaching the 469 * the drive). If `fdc' is not NULL, the drive was found but was not 470 * in the system config file; print the drive name as well. 471 * Return QUIET (config_find ignores this if the device was configured) to 472 * avoid printing `fdN not configured' messages. 473 */ 474 int 475 fdprint(void *aux, const char *fdc) 476 { 477 register struct fdc_attach_args *fa = aux; 478 479 if (!fdc) 480 aprint_normal(" drive %d", fa->fa_drive); 481 return (QUIET); 482 } 483 484 /* 485 * Configure several parameters and features on the FDC. 486 * Return 0 on success. 487 */ 488 static int 489 fdconf(struct fdc_softc *fdc) 490 { 491 int vroom; 492 493 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 494 return (-1); 495 496 /* 497 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 498 * the PROM thinks is appropriate. 499 */ 500 if ((vroom = fdc->sc_status[7]) == 0) 501 vroom = 0x64; 502 503 /* Configure controller to use FIFO and Implied Seek */ 504 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 505 return (-1); 506 if (fdc_wrfifo(fdc, vroom) != 0) 507 return (-1); 508 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 509 return (-1); 510 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 511 return (-1); 512 /* No result phase for the NE7CMD_CFG command */ 513 514 if ((fdc->sc_flags & FDC_82077) != 0) { 515 /* Lock configuration across soft resets. */ 516 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 517 fdcresult(fdc) != 1) { 518 #ifdef DEBUG 519 printf("fdconf: CFGLOCK failed"); 520 #endif 521 return (-1); 522 } 523 } 524 525 return (0); 526 #if 0 527 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 528 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 529 if (fdc_debug) 530 printf("[version cmd]"); 531 } 532 #endif 533 } 534 535 void 536 fdcattach_mainbus(struct device *parent, struct device *self, void *aux) 537 { 538 struct fdc_softc *fdc = device_private(self); 539 struct mainbus_attach_args *ma = aux; 540 541 fdc->sc_bustag = ma->ma_bustag; 542 543 if (bus_space_map( 544 ma->ma_bustag, 545 ma->ma_paddr, 546 ma->ma_size, 547 BUS_SPACE_MAP_LINEAR, 548 &fdc->sc_handle) != 0) { 549 printf("%s: cannot map registers\n", self->dv_xname); 550 return; 551 } 552 553 establish_chip_type(fdc, 554 ma->ma_bustag, 555 ma->ma_paddr, 556 ma->ma_size, 557 fdc->sc_handle); 558 559 if (fdcattach(fdc, ma->ma_pri) != 0) 560 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 561 } 562 563 void 564 fdcattach_obio(struct device *parent, struct device *self, void *aux) 565 { 566 struct fdc_softc *fdc = device_private(self); 567 union obio_attach_args *uoba = aux; 568 struct sbus_attach_args *sa = &uoba->uoba_sbus; 569 570 if (sa->sa_nintr == 0) { 571 printf(": no interrupt line configured\n"); 572 return; 573 } 574 575 fdc->sc_bustag = sa->sa_bustag; 576 577 if (sbus_bus_map(sa->sa_bustag, 578 sa->sa_slot, sa->sa_offset, sa->sa_size, 579 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 580 printf("%s: cannot map control registers\n", 581 self->dv_xname); 582 return; 583 } 584 585 establish_chip_type(fdc, 586 sa->sa_bustag, 587 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 588 sa->sa_size, 589 fdc->sc_handle); 590 591 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 592 printf(": no drives attached\n"); 593 return; 594 } 595 596 if (fdcattach(fdc, sa->sa_pri) != 0) 597 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 598 } 599 600 int 601 fdcattach(struct fdc_softc *fdc, int pri) 602 { 603 struct fdc_attach_args fa; 604 int drive_attached; 605 char code; 606 607 callout_init(&fdc->sc_timo_ch, 0); 608 callout_init(&fdc->sc_intr_ch, 0); 609 610 fdc->sc_state = DEVIDLE; 611 fdc->sc_itask = FDC_ITASK_NONE; 612 fdc->sc_istatus = FDC_ISTATUS_NONE; 613 fdc->sc_flags |= FDC_EIS; 614 TAILQ_INIT(&fdc->sc_drives); 615 616 if ((fdc->sc_flags & FDC_82077) != 0) { 617 fdc->sc_reg_msr = FDREG77_MSR; 618 fdc->sc_reg_fifo = FDREG77_FIFO; 619 fdc->sc_reg_dor = FDREG77_DOR; 620 fdc->sc_reg_dir = FDREG77_DIR; 621 code = '7'; 622 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 623 } else { 624 fdc->sc_reg_msr = FDREG72_MSR; 625 fdc->sc_reg_fifo = FDREG72_FIFO; 626 fdc->sc_reg_dor = 0; 627 code = '2'; 628 } 629 630 /* 631 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 632 * Note: CFG_EFIFO is active-low, initial threshold value: 8 633 */ 634 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 635 if (fdconf(fdc) != 0) { 636 printf(": no drives attached\n"); 637 return (-1); 638 } 639 640 fdciop = &fdc->sc_io; 641 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 642 fdc_c_hwintr, fdc, fdchwintr) == NULL) { 643 printf("\n%s: cannot register interrupt handler\n", 644 fdc->sc_dev.dv_xname); 645 return (-1); 646 } 647 648 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 649 if (fdc->sc_sicookie == NULL) { 650 printf("\n%s: cannot register soft interrupt handler\n", 651 fdc->sc_dev.dv_xname); 652 return (-1); 653 } 654 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 655 656 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 657 fdc->sc_dev.dv_xname, "intr"); 658 659 /* physical limit: four drives per controller. */ 660 drive_attached = 0; 661 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 662 fa.fa_deftype = NULL; /* unknown */ 663 fa.fa_deftype = &fd_types[0]; /* XXX */ 664 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 665 drive_attached = 1; 666 } 667 668 if (drive_attached == 0) { 669 /* XXX - dis-establish interrupts here */ 670 /* return (-1); */ 671 } 672 673 return (0); 674 } 675 676 int 677 fdmatch(struct device *parent, struct cfdata *match, void *aux) 678 { 679 struct fdc_softc *fdc = device_private(parent); 680 bus_space_tag_t t = fdc->sc_bustag; 681 bus_space_handle_t h = fdc->sc_handle; 682 struct fdc_attach_args *fa = aux; 683 int drive = fa->fa_drive; 684 int n, ok; 685 686 if (drive > 0) 687 /* XXX - for now, punt on more than one drive */ 688 return (0); 689 690 if ((fdc->sc_flags & FDC_82077) != 0) { 691 /* select drive and turn on motor */ 692 bus_space_write_1(t, h, fdc->sc_reg_dor, 693 drive | FDO_FRST | FDO_MOEN(drive)); 694 /* wait for motor to spin up */ 695 delay(250000); 696 } else { 697 auxregbisc(AUXIO4C_FDS, 0); 698 } 699 fdc->sc_nstat = 0; 700 fdc_wrfifo(fdc, NE7CMD_RECAL); 701 fdc_wrfifo(fdc, drive); 702 703 /* Wait for recalibration to complete */ 704 for (n = 0; n < 10000; n++) { 705 uint8_t v; 706 707 delay(1000); 708 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 709 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 710 /* wait a bit longer till device *really* is ready */ 711 delay(100000); 712 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 713 break; 714 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 715 /* 716 * Got `invalid command'; we interpret it 717 * to mean that the re-calibrate hasn't in 718 * fact finished yet 719 */ 720 continue; 721 break; 722 } 723 } 724 n = fdc->sc_nstat; 725 #ifdef FD_DEBUG 726 if (fdc_debug) { 727 int i; 728 printf("fdprobe: %d stati:", n); 729 for (i = 0; i < n; i++) 730 printf(" 0x%x", fdc->sc_status[i]); 731 printf("\n"); 732 } 733 #endif 734 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 735 736 /* turn off motor */ 737 if ((fdc->sc_flags & FDC_82077) != 0) { 738 /* deselect drive and turn motor off */ 739 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 740 } else { 741 auxregbisc(0, AUXIO4C_FDS); 742 } 743 744 return (ok); 745 } 746 747 /* 748 * Controller is working, and drive responded. Attach it. 749 */ 750 void 751 fdattach(struct device *parent, struct device *self, void *aux) 752 { 753 struct fdc_softc *fdc = device_private(parent); 754 struct fd_softc *fd = device_private(self); 755 struct fdc_attach_args *fa = aux; 756 struct fd_type *type = fa->fa_deftype; 757 int drive = fa->fa_drive; 758 759 callout_init(&fd->sc_motoron_ch, 0); 760 callout_init(&fd->sc_motoroff_ch, 0); 761 762 /* XXX Allow `flags' to override device type? */ 763 764 if (type) 765 printf(": %s %d cyl, %d head, %d sec\n", type->name, 766 type->cylinders, type->heads, type->sectrac); 767 else 768 printf(": density unknown\n"); 769 770 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 771 fd->sc_cylin = -1; 772 fd->sc_drive = drive; 773 fd->sc_deftype = type; 774 fdc->sc_fd[drive] = fd; 775 776 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 777 fdc_wrfifo(fdc, type->steprate); 778 /* XXX head load time == 6ms */ 779 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 780 781 /* 782 * Initialize and attach the disk structure. 783 */ 784 disk_init(&fd->sc_dk, fd->sc_dv.dv_xname, &fddkdriver); 785 disk_attach(&fd->sc_dk); 786 787 /* 788 * Establish a mountroot_hook anyway in case we booted 789 * with RB_ASKNAME and get selected as the boot device. 790 */ 791 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 792 793 /* Make sure the drive motor gets turned off at shutdown time. */ 794 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 795 } 796 797 inline struct fd_type * 798 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 799 { 800 int type = FDTYPE(dev); 801 802 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 803 return (NULL); 804 return (type ? &fd_types[type - 1] : fd->sc_deftype); 805 } 806 807 void 808 fdstrategy(struct buf *bp) 809 { 810 struct fd_softc *fd; 811 int unit = FDUNIT(bp->b_dev); 812 int sz; 813 int s; 814 815 /* Valid unit, controller, and request? */ 816 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 817 bp->b_blkno < 0 || 818 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 819 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 820 (bp->b_flags & B_FORMAT) == 0)) { 821 bp->b_error = EINVAL; 822 goto done; 823 } 824 825 /* If it's a null transfer, return immediately. */ 826 if (bp->b_bcount == 0) 827 goto done; 828 829 sz = howmany(bp->b_bcount, DEV_BSIZE); 830 831 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 832 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 833 - bp->b_blkno; 834 if (sz == 0) { 835 /* If exactly at end of disk, return EOF. */ 836 bp->b_resid = bp->b_bcount; 837 goto done; 838 } 839 if (sz < 0) { 840 /* If past end of disk, return EINVAL. */ 841 bp->b_error = EINVAL; 842 goto done; 843 } 844 /* Otherwise, truncate request. */ 845 bp->b_bcount = sz << DEV_BSHIFT; 846 } 847 848 bp->b_rawblkno = bp->b_blkno; 849 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 850 (FD_BSIZE(fd) * fd->sc_type->seccyl); 851 852 #ifdef FD_DEBUG 853 if (fdc_debug > 1) 854 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 855 (long long)bp->b_blkno, bp->b_bcount, 856 (long long)fd->sc_blkno, bp->b_cylinder); 857 #endif 858 859 /* Queue transfer on drive, activate drive and controller if idle. */ 860 s = splbio(); 861 BUFQ_PUT(fd->sc_q, bp); 862 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 863 if (fd->sc_active == 0) 864 fdstart(fd); 865 #ifdef DIAGNOSTIC 866 else { 867 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 868 if (fdc->sc_state == DEVIDLE) { 869 printf("fdstrategy: controller inactive\n"); 870 fdcstart(fdc); 871 } 872 } 873 #endif 874 splx(s); 875 return; 876 877 done: 878 /* Toss transfer; we're done early. */ 879 biodone(bp); 880 } 881 882 void 883 fdstart(struct fd_softc *fd) 884 { 885 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 886 int active = fdc->sc_drives.tqh_first != 0; 887 888 /* Link into controller queue. */ 889 fd->sc_active = 1; 890 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 891 892 /* If controller not already active, start it. */ 893 if (!active) 894 fdcstart(fdc); 895 } 896 897 void 898 fdfinish(struct fd_softc *fd, struct buf *bp) 899 { 900 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 901 902 /* 903 * Move this drive to the end of the queue to give others a `fair' 904 * chance. We only force a switch if N operations are completed while 905 * another drive is waiting to be serviced, since there is a long motor 906 * startup delay whenever we switch. 907 */ 908 (void)BUFQ_GET(fd->sc_q); 909 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 910 fd->sc_ops = 0; 911 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 912 if (BUFQ_PEEK(fd->sc_q) != NULL) { 913 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 914 } else 915 fd->sc_active = 0; 916 } 917 bp->b_resid = fd->sc_bcount; 918 fd->sc_skip = 0; 919 920 biodone(bp); 921 /* turn off motor 5s from now */ 922 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 923 fdc->sc_state = DEVIDLE; 924 } 925 926 void 927 fdc_reset(struct fdc_softc *fdc) 928 { 929 bus_space_tag_t t = fdc->sc_bustag; 930 bus_space_handle_t h = fdc->sc_handle; 931 932 if ((fdc->sc_flags & FDC_82077) != 0) { 933 bus_space_write_1(t, h, fdc->sc_reg_dor, 934 FDO_FDMAEN | FDO_MOEN(0)); 935 } 936 937 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 938 delay(10); 939 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 940 941 if ((fdc->sc_flags & FDC_82077) != 0) { 942 bus_space_write_1(t, h, fdc->sc_reg_dor, 943 FDO_FRST | FDO_FDMAEN | FDO_DS); 944 } 945 #ifdef FD_DEBUG 946 if (fdc_debug) 947 printf("fdc reset\n"); 948 #endif 949 } 950 951 void 952 fd_set_motor(struct fdc_softc *fdc) 953 { 954 struct fd_softc *fd; 955 u_char status; 956 int n; 957 958 if ((fdc->sc_flags & FDC_82077) != 0) { 959 status = FDO_FRST | FDO_FDMAEN; 960 if ((fd = fdc->sc_drives.tqh_first) != NULL) 961 status |= fd->sc_drive; 962 963 for (n = 0; n < 4; n++) 964 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 965 status |= FDO_MOEN(n); 966 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 967 fdc->sc_reg_dor, status); 968 } else { 969 970 for (n = 0; n < 4; n++) { 971 if ((fd = fdc->sc_fd[n]) != NULL && 972 (fd->sc_flags & FD_MOTOR) != 0) { 973 auxregbisc(AUXIO4C_FDS, 0); 974 return; 975 } 976 } 977 auxregbisc(0, AUXIO4C_FDS); 978 } 979 } 980 981 void 982 fd_motor_off(void *arg) 983 { 984 struct fd_softc *fd = arg; 985 int s; 986 987 s = splbio(); 988 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 989 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 990 splx(s); 991 } 992 993 void 994 fd_motor_on(void *arg) 995 { 996 struct fd_softc *fd = arg; 997 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 998 int s; 999 1000 s = splbio(); 1001 fd->sc_flags &= ~FD_MOTOR_WAIT; 1002 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1003 (void) fdcstate(fdc); 1004 splx(s); 1005 } 1006 1007 /* 1008 * Get status bytes off the FDC after a command has finished 1009 * Returns the number of status bytes read; -1 on error. 1010 * The return value is also stored in `sc_nstat'. 1011 */ 1012 int 1013 fdcresult(struct fdc_softc *fdc) 1014 { 1015 bus_space_tag_t t = fdc->sc_bustag; 1016 bus_space_handle_t h = fdc->sc_handle; 1017 int j, n = 0; 1018 1019 for (j = 10000; j; j--) { 1020 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1021 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1022 if (v == NE7_RQM) 1023 return (fdc->sc_nstat = n); 1024 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1025 if (n >= sizeof(fdc->sc_status)) { 1026 log(LOG_ERR, "fdcresult: overrun\n"); 1027 return (-1); 1028 } 1029 fdc->sc_status[n++] = 1030 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1031 } else 1032 delay(1); 1033 } 1034 1035 log(LOG_ERR, "fdcresult: timeout\n"); 1036 return (fdc->sc_nstat = -1); 1037 } 1038 1039 /* 1040 * Write a command byte to the FDC. 1041 * Returns 0 on success; -1 on failure (i.e. timeout) 1042 */ 1043 int 1044 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1045 { 1046 bus_space_tag_t t = fdc->sc_bustag; 1047 bus_space_handle_t h = fdc->sc_handle; 1048 int i; 1049 1050 for (i = 100000; i-- > 0;) { 1051 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1052 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1053 /* The chip is ready */ 1054 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1055 return (0); 1056 } 1057 delay(1); 1058 } 1059 return (-1); 1060 } 1061 1062 int 1063 fdc_diskchange(struct fdc_softc *fdc) 1064 { 1065 1066 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1067 bus_space_tag_t t = fdc->sc_bustag; 1068 bus_space_handle_t h = fdc->sc_handle; 1069 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1070 return ((v & FDI_DCHG) != 0); 1071 } else if (CPU_ISSUN4C) { 1072 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1073 } 1074 return (0); 1075 } 1076 1077 int 1078 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1079 { 1080 int unit, pmask; 1081 struct fd_softc *fd; 1082 struct fd_type *type; 1083 1084 unit = FDUNIT(dev); 1085 fd = device_lookup_private(&fd_cd, unit); 1086 if (fd == NULL) 1087 return (ENXIO); 1088 type = fd_dev_to_type(fd, dev); 1089 if (type == NULL) 1090 return (ENXIO); 1091 1092 if ((fd->sc_flags & FD_OPEN) != 0 && 1093 fd->sc_type != type) 1094 return (EBUSY); 1095 1096 fd->sc_type = type; 1097 fd->sc_cylin = -1; 1098 fd->sc_flags |= FD_OPEN; 1099 1100 /* 1101 * Only update the disklabel if we're not open anywhere else. 1102 */ 1103 if (fd->sc_dk.dk_openmask == 0) 1104 fdgetdisklabel(dev); 1105 1106 pmask = (1 << DISKPART(dev)); 1107 1108 switch (fmt) { 1109 case S_IFCHR: 1110 fd->sc_dk.dk_copenmask |= pmask; 1111 break; 1112 1113 case S_IFBLK: 1114 fd->sc_dk.dk_bopenmask |= pmask; 1115 break; 1116 } 1117 fd->sc_dk.dk_openmask = 1118 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1119 1120 return (0); 1121 } 1122 1123 int 1124 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1125 { 1126 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1127 int pmask = (1 << DISKPART(dev)); 1128 1129 fd->sc_flags &= ~FD_OPEN; 1130 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1131 1132 switch (fmt) { 1133 case S_IFCHR: 1134 fd->sc_dk.dk_copenmask &= ~pmask; 1135 break; 1136 1137 case S_IFBLK: 1138 fd->sc_dk.dk_bopenmask &= ~pmask; 1139 break; 1140 } 1141 fd->sc_dk.dk_openmask = 1142 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1143 1144 return (0); 1145 } 1146 1147 int 1148 fdread(dev_t dev, struct uio *uio, int flag) 1149 { 1150 1151 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1152 } 1153 1154 int 1155 fdwrite(dev_t dev, struct uio *uio, int flag) 1156 { 1157 1158 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1159 } 1160 1161 void 1162 fdcstart(struct fdc_softc *fdc) 1163 { 1164 1165 #ifdef DIAGNOSTIC 1166 /* only got here if controller's drive queue was inactive; should 1167 be in idle state */ 1168 if (fdc->sc_state != DEVIDLE) { 1169 printf("fdcstart: not idle\n"); 1170 return; 1171 } 1172 #endif 1173 (void) fdcstate(fdc); 1174 } 1175 1176 static void 1177 fdcpstatus(int n, struct fdc_softc *fdc) 1178 { 1179 char bits[64]; 1180 1181 switch (n) { 1182 case 0: 1183 printf("\n"); 1184 break; 1185 case 2: 1186 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1187 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1188 break; 1189 case 7: 1190 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1191 printf(" (st0 %s", bits); 1192 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1193 printf(" st1 %s", bits); 1194 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1195 printf(" st2 %s", bits); 1196 printf(" cyl %d head %d sec %d)\n", 1197 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1198 break; 1199 #ifdef DIAGNOSTIC 1200 default: 1201 printf("\nfdcstatus: weird size"); 1202 break; 1203 #endif 1204 } 1205 } 1206 1207 void 1208 fdcstatus(struct fdc_softc *fdc, const char *s) 1209 { 1210 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1211 int n; 1212 1213 /* Just print last status */ 1214 n = fdc->sc_nstat; 1215 1216 #if 0 1217 /* 1218 * A 82072 seems to return <invalid command> on 1219 * gratuitous Sense Interrupt commands. 1220 */ 1221 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1222 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1223 (void) fdcresult(fdc); 1224 n = 2; 1225 } 1226 #endif 1227 1228 printf("%s: %s: state %d", 1229 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1230 1231 fdcpstatus(n, fdc); 1232 } 1233 1234 void 1235 fdctimeout(void *arg) 1236 { 1237 struct fdc_softc *fdc = arg; 1238 struct fd_softc *fd; 1239 int s; 1240 1241 s = splbio(); 1242 fd = fdc->sc_drives.tqh_first; 1243 if (fd == NULL) { 1244 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1245 fdc->sc_dev.dv_xname, 1246 fdc->sc_state, fdc->sc_istatus); 1247 fdc->sc_state = DEVIDLE; 1248 goto out; 1249 } 1250 1251 if (BUFQ_PEEK(fd->sc_q) != NULL) 1252 fdc->sc_state++; 1253 else 1254 fdc->sc_state = DEVIDLE; 1255 1256 (void) fdcstate(fdc); 1257 out: 1258 splx(s); 1259 1260 } 1261 1262 void 1263 fdcpseudointr(void *arg) 1264 { 1265 struct fdc_softc *fdc = arg; 1266 int s; 1267 1268 /* Just ensure it has the right spl. */ 1269 s = splbio(); 1270 (void) fdcstate(fdc); 1271 splx(s); 1272 } 1273 1274 1275 /* 1276 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1277 * handler is available. Unfortunately, we have no reliable way to 1278 * determine that the interrupt really came from the floppy controller; 1279 * just hope that the other devices that share this interrupt level 1280 * can do better.. 1281 */ 1282 int 1283 fdc_c_hwintr(void *arg) 1284 { 1285 struct fdc_softc *fdc = arg; 1286 bus_space_tag_t t = fdc->sc_bustag; 1287 bus_space_handle_t h = fdc->sc_handle; 1288 1289 switch (fdc->sc_itask) { 1290 case FDC_ITASK_NONE: 1291 return (0); 1292 case FDC_ITASK_SENSEI: 1293 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1294 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1295 else 1296 fdc->sc_istatus = FDC_ISTATUS_DONE; 1297 softint_schedule(fdc->sc_sicookie); 1298 return (1); 1299 case FDC_ITASK_RESULT: 1300 if (fdcresult(fdc) == -1) 1301 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1302 else 1303 fdc->sc_istatus = FDC_ISTATUS_DONE; 1304 softint_schedule(fdc->sc_sicookie); 1305 return (1); 1306 case FDC_ITASK_DMA: 1307 /* Proceed with pseudo-DMA below */ 1308 break; 1309 default: 1310 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1311 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1312 softint_schedule(fdc->sc_sicookie); 1313 return (1); 1314 } 1315 1316 /* 1317 * Pseudo DMA in progress 1318 */ 1319 for (;;) { 1320 uint8_t msr; 1321 1322 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1323 1324 if ((msr & NE7_RQM) == 0) 1325 /* That's all this round */ 1326 break; 1327 1328 if ((msr & NE7_NDM) == 0) { 1329 /* Execution phase finished, get result. */ 1330 fdcresult(fdc); 1331 fdc->sc_istatus = FDC_ISTATUS_DONE; 1332 softint_schedule(fdc->sc_sicookie); 1333 break; 1334 } 1335 1336 if (fdc->sc_tc == 0) 1337 /* For some reason the controller wants to transfer 1338 more data then what we want to transfer. */ 1339 panic("fdc: overrun"); 1340 1341 /* Another byte can be transferred */ 1342 if ((msr & NE7_DIO) != 0) 1343 *fdc->sc_data = 1344 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1345 else 1346 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1347 *fdc->sc_data); 1348 1349 fdc->sc_data++; 1350 if (--fdc->sc_tc == 0) { 1351 FTC_FLIP; 1352 break; 1353 } 1354 } 1355 return (1); 1356 } 1357 1358 void 1359 fdcswintr(void *arg) 1360 { 1361 struct fdc_softc *fdc = arg; 1362 1363 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1364 /* This (software) interrupt is not for us */ 1365 return; 1366 1367 switch (fdc->sc_istatus) { 1368 case FDC_ISTATUS_ERROR: 1369 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1370 break; 1371 case FDC_ISTATUS_SPURIOUS: 1372 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1373 break; 1374 } 1375 1376 fdcstate(fdc); 1377 return; 1378 } 1379 1380 int 1381 fdcstate(struct fdc_softc *fdc) 1382 { 1383 1384 #define st0 fdc->sc_status[0] 1385 #define st1 fdc->sc_status[1] 1386 #define cyl fdc->sc_status[1] 1387 #define FDC_WRFIFO(fdc, c) do { \ 1388 if (fdc_wrfifo(fdc, (c))) { \ 1389 goto xxx; \ 1390 } \ 1391 } while(0) 1392 1393 struct fd_softc *fd; 1394 struct buf *bp; 1395 int read, head, sec, nblks; 1396 struct fd_type *type; 1397 struct ne7_fd_formb *finfo = NULL; 1398 1399 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1400 /* Prevent loop if the reset sequence produces errors */ 1401 if (fdc->sc_state != RESETCOMPLETE && 1402 fdc->sc_state != RECALWAIT && 1403 fdc->sc_state != RECALCOMPLETE) 1404 fdc->sc_state = DORESET; 1405 } 1406 1407 /* Clear I task/status field */ 1408 fdc->sc_istatus = FDC_ISTATUS_NONE; 1409 fdc->sc_itask = FDC_ITASK_NONE; 1410 1411 loop: 1412 /* Is there a drive for the controller to do a transfer with? */ 1413 fd = fdc->sc_drives.tqh_first; 1414 if (fd == NULL) { 1415 fdc->sc_state = DEVIDLE; 1416 return (0); 1417 } 1418 1419 /* Is there a transfer to this drive? If not, deactivate drive. */ 1420 bp = BUFQ_PEEK(fd->sc_q); 1421 if (bp == NULL) { 1422 fd->sc_ops = 0; 1423 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1424 fd->sc_active = 0; 1425 goto loop; 1426 } 1427 1428 if (bp->b_flags & B_FORMAT) 1429 finfo = (struct ne7_fd_formb *)bp->b_data; 1430 1431 switch (fdc->sc_state) { 1432 case DEVIDLE: 1433 fdc->sc_errors = 0; 1434 fd->sc_skip = 0; 1435 fd->sc_bcount = bp->b_bcount; 1436 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1437 callout_stop(&fd->sc_motoroff_ch); 1438 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1439 fdc->sc_state = MOTORWAIT; 1440 return (1); 1441 } 1442 if ((fd->sc_flags & FD_MOTOR) == 0) { 1443 /* Turn on the motor, being careful about pairing. */ 1444 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1445 if (ofd && ofd->sc_flags & FD_MOTOR) { 1446 callout_stop(&ofd->sc_motoroff_ch); 1447 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1448 } 1449 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1450 fd_set_motor(fdc); 1451 fdc->sc_state = MOTORWAIT; 1452 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1453 /* Allow .25s for motor to stabilize. */ 1454 callout_reset(&fd->sc_motoron_ch, hz / 4, 1455 fd_motor_on, fd); 1456 } else { 1457 fd->sc_flags &= ~FD_MOTOR_WAIT; 1458 goto loop; 1459 } 1460 return (1); 1461 } 1462 /* Make sure the right drive is selected. */ 1463 fd_set_motor(fdc); 1464 1465 if (fdc_diskchange(fdc)) 1466 goto dodskchg; 1467 1468 /*FALLTHROUGH*/ 1469 case DOSEEK: 1470 doseek: 1471 if ((fdc->sc_flags & FDC_EIS) && 1472 (bp->b_flags & B_FORMAT) == 0) { 1473 fd->sc_cylin = bp->b_cylinder; 1474 /* We use implied seek */ 1475 goto doio; 1476 } 1477 1478 if (fd->sc_cylin == bp->b_cylinder) 1479 goto doio; 1480 1481 fd->sc_cylin = -1; 1482 fdc->sc_state = SEEKWAIT; 1483 fdc->sc_nstat = 0; 1484 1485 iostat_seek(fd->sc_dk.dk_stats); 1486 1487 disk_busy(&fd->sc_dk); 1488 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1489 1490 /* specify command */ 1491 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1492 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1493 /* XXX head load time == 6ms */ 1494 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1495 1496 fdc->sc_itask = FDC_ITASK_SENSEI; 1497 /* seek function */ 1498 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1499 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1500 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1501 return (1); 1502 1503 case DODSKCHG: 1504 dodskchg: 1505 /* 1506 * Disk change: force a seek operation by going to cyl 1 1507 * followed by a recalibrate. 1508 */ 1509 disk_busy(&fd->sc_dk); 1510 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1511 fd->sc_cylin = -1; 1512 fdc->sc_nstat = 0; 1513 fdc->sc_state = DSKCHGWAIT; 1514 1515 fdc->sc_itask = FDC_ITASK_SENSEI; 1516 /* seek function */ 1517 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1518 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1519 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1520 return (1); 1521 1522 case DSKCHGWAIT: 1523 callout_stop(&fdc->sc_timo_ch); 1524 disk_unbusy(&fd->sc_dk, 0, 0); 1525 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1526 cyl != 1 * fd->sc_type->step) { 1527 fdcstatus(fdc, "dskchg seek failed"); 1528 fdc->sc_state = DORESET; 1529 } else 1530 fdc->sc_state = DORECAL; 1531 1532 if (fdc_diskchange(fdc)) { 1533 printf("%s: cannot clear disk change status\n", 1534 fdc->sc_dev.dv_xname); 1535 fdc->sc_state = DORESET; 1536 } 1537 goto loop; 1538 1539 case DOIO: 1540 doio: 1541 if (finfo != NULL) 1542 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1543 (char *)finfo; 1544 type = fd->sc_type; 1545 sec = fd->sc_blkno % type->seccyl; 1546 nblks = type->seccyl - sec; 1547 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1548 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1549 fd->sc_nblks = nblks; 1550 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1551 head = sec / type->sectrac; 1552 sec -= head * type->sectrac; 1553 #ifdef DIAGNOSTIC 1554 {int block; 1555 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1556 if (block != fd->sc_blkno) { 1557 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1558 #ifdef DDB 1559 Debugger(); 1560 #endif 1561 }} 1562 #endif 1563 read = bp->b_flags & B_READ; 1564 1565 /* Setup for pseudo DMA */ 1566 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1567 fdc->sc_tc = fd->sc_nbytes; 1568 1569 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1570 fdc->sc_reg_drs, type->rate); 1571 #ifdef FD_DEBUG 1572 if (fdc_debug > 1) 1573 printf("fdcstate: doio: %s drive %d " 1574 "track %d head %d sec %d nblks %d\n", 1575 finfo ? "format" : 1576 (read ? "read" : "write"), 1577 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1578 #endif 1579 fdc->sc_state = IOCOMPLETE; 1580 fdc->sc_itask = FDC_ITASK_DMA; 1581 fdc->sc_nstat = 0; 1582 1583 disk_busy(&fd->sc_dk); 1584 1585 /* allow 3 seconds for operation */ 1586 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1587 1588 if (finfo != NULL) { 1589 /* formatting */ 1590 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1591 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1592 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1593 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1594 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1595 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1596 } else { 1597 if (read) 1598 FDC_WRFIFO(fdc, NE7CMD_READ); 1599 else 1600 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1601 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1602 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1603 FDC_WRFIFO(fdc, head); 1604 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1605 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1606 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1607 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1608 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1609 } 1610 1611 return (1); /* will return later */ 1612 1613 case SEEKWAIT: 1614 callout_stop(&fdc->sc_timo_ch); 1615 fdc->sc_state = SEEKCOMPLETE; 1616 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1617 /* allow 1/50 second for heads to settle */ 1618 callout_reset(&fdc->sc_intr_ch, hz / 50, 1619 fdcpseudointr, fdc); 1620 return (1); /* will return later */ 1621 } 1622 /*FALLTHROUGH*/ 1623 case SEEKCOMPLETE: 1624 /* no data on seek */ 1625 disk_unbusy(&fd->sc_dk, 0, 0); 1626 1627 /* Make sure seek really happened. */ 1628 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1629 cyl != bp->b_cylinder * fd->sc_type->step) { 1630 #ifdef FD_DEBUG 1631 if (fdc_debug) 1632 fdcstatus(fdc, "seek failed"); 1633 #endif 1634 fdcretry(fdc); 1635 goto loop; 1636 } 1637 fd->sc_cylin = bp->b_cylinder; 1638 goto doio; 1639 1640 case IOTIMEDOUT: 1641 /* 1642 * Try to abort the I/O operation without resetting 1643 * the chip first. Poke TC and arrange to pick up 1644 * the timed out I/O command's status. 1645 */ 1646 fdc->sc_itask = FDC_ITASK_RESULT; 1647 fdc->sc_state = IOCLEANUPWAIT; 1648 fdc->sc_nstat = 0; 1649 /* 1/10 second should be enough */ 1650 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1651 FTC_FLIP; 1652 return (1); 1653 1654 case IOCLEANUPTIMEDOUT: 1655 case SEEKTIMEDOUT: 1656 case RECALTIMEDOUT: 1657 case RESETTIMEDOUT: 1658 case DSKCHGTIMEDOUT: 1659 fdcstatus(fdc, "timeout"); 1660 1661 /* All other timeouts always roll through to a chip reset */ 1662 fdcretry(fdc); 1663 1664 /* Force reset, no matter what fdcretry() says */ 1665 fdc->sc_state = DORESET; 1666 goto loop; 1667 1668 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1669 callout_stop(&fdc->sc_timo_ch); 1670 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1671 (bp->b_flags & B_READ)); 1672 fdcretry(fdc); 1673 goto loop; 1674 1675 case IOCOMPLETE: /* IO DONE, post-analyze */ 1676 callout_stop(&fdc->sc_timo_ch); 1677 1678 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1679 (bp->b_flags & B_READ)); 1680 1681 if (fdc->sc_nstat != 7 || st1 != 0 || 1682 ((st0 & 0xf8) != 0 && 1683 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1684 #ifdef FD_DEBUG 1685 if (fdc_debug) { 1686 fdcstatus(fdc, 1687 bp->b_flags & B_READ 1688 ? "read failed" : "write failed"); 1689 printf("blkno %lld nblks %d nstat %d tc %d\n", 1690 (long long)fd->sc_blkno, fd->sc_nblks, 1691 fdc->sc_nstat, fdc->sc_tc); 1692 } 1693 #endif 1694 if (fdc->sc_nstat == 7 && 1695 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1696 1697 /* 1698 * Silently retry overruns if no other 1699 * error bit is set. Adjust threshold. 1700 */ 1701 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1702 if (thr < 15) { 1703 thr++; 1704 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1705 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1706 #ifdef FD_DEBUG 1707 if (fdc_debug) 1708 printf("fdc: %d -> threshold\n", thr); 1709 #endif 1710 fdconf(fdc); 1711 fdc->sc_overruns = 0; 1712 } 1713 if (++fdc->sc_overruns < 3) { 1714 fdc->sc_state = DOIO; 1715 goto loop; 1716 } 1717 } 1718 fdcretry(fdc); 1719 goto loop; 1720 } 1721 if (fdc->sc_errors) { 1722 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1723 fd->sc_skip / FD_BSIZE(fd), 1724 (struct disklabel *)NULL); 1725 printf("\n"); 1726 fdc->sc_errors = 0; 1727 } else { 1728 if (--fdc->sc_overruns < -20) { 1729 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1730 if (thr > 0) { 1731 thr--; 1732 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1733 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1734 #ifdef FD_DEBUG 1735 if (fdc_debug) 1736 printf("fdc: %d -> threshold\n", thr); 1737 #endif 1738 fdconf(fdc); 1739 } 1740 fdc->sc_overruns = 0; 1741 } 1742 } 1743 fd->sc_blkno += fd->sc_nblks; 1744 fd->sc_skip += fd->sc_nbytes; 1745 fd->sc_bcount -= fd->sc_nbytes; 1746 if (finfo == NULL && fd->sc_bcount > 0) { 1747 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1748 goto doseek; 1749 } 1750 fdfinish(fd, bp); 1751 goto loop; 1752 1753 case DORESET: 1754 /* try a reset, keep motor on */ 1755 fd_set_motor(fdc); 1756 delay(100); 1757 fdc->sc_nstat = 0; 1758 fdc->sc_itask = FDC_ITASK_SENSEI; 1759 fdc->sc_state = RESETCOMPLETE; 1760 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1761 fdc_reset(fdc); 1762 return (1); /* will return later */ 1763 1764 case RESETCOMPLETE: 1765 callout_stop(&fdc->sc_timo_ch); 1766 fdconf(fdc); 1767 1768 /* FALLTHROUGH */ 1769 case DORECAL: 1770 fdc->sc_state = RECALWAIT; 1771 fdc->sc_itask = FDC_ITASK_SENSEI; 1772 fdc->sc_nstat = 0; 1773 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1774 /* recalibrate function */ 1775 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1776 FDC_WRFIFO(fdc, fd->sc_drive); 1777 return (1); /* will return later */ 1778 1779 case RECALWAIT: 1780 callout_stop(&fdc->sc_timo_ch); 1781 fdc->sc_state = RECALCOMPLETE; 1782 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1783 /* allow 1/30 second for heads to settle */ 1784 callout_reset(&fdc->sc_intr_ch, hz / 30, 1785 fdcpseudointr, fdc); 1786 return (1); /* will return later */ 1787 } 1788 1789 case RECALCOMPLETE: 1790 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1791 #ifdef FD_DEBUG 1792 if (fdc_debug) 1793 fdcstatus(fdc, "recalibrate failed"); 1794 #endif 1795 fdcretry(fdc); 1796 goto loop; 1797 } 1798 fd->sc_cylin = 0; 1799 goto doseek; 1800 1801 case MOTORWAIT: 1802 if (fd->sc_flags & FD_MOTOR_WAIT) 1803 return (1); /* time's not up yet */ 1804 goto doseek; 1805 1806 default: 1807 fdcstatus(fdc, "stray interrupt"); 1808 return (1); 1809 } 1810 #ifdef DIAGNOSTIC 1811 panic("fdcintr: impossible"); 1812 #endif 1813 1814 xxx: 1815 /* 1816 * We get here if the chip locks up in FDC_WRFIFO() 1817 * Cancel any operation and schedule a reset 1818 */ 1819 callout_stop(&fdc->sc_timo_ch); 1820 fdcretry(fdc); 1821 (fdc)->sc_state = DORESET; 1822 goto loop; 1823 1824 #undef st0 1825 #undef st1 1826 #undef cyl 1827 } 1828 1829 void 1830 fdcretry(struct fdc_softc *fdc) 1831 { 1832 struct fd_softc *fd; 1833 struct buf *bp; 1834 int error = EIO; 1835 1836 fd = fdc->sc_drives.tqh_first; 1837 bp = BUFQ_PEEK(fd->sc_q); 1838 1839 fdc->sc_overruns = 0; 1840 if (fd->sc_opts & FDOPT_NORETRY) 1841 goto fail; 1842 1843 switch (fdc->sc_errors) { 1844 case 0: 1845 if (fdc->sc_nstat == 7 && 1846 (fdc->sc_status[0] & 0xd8) == 0x40 && 1847 (fdc->sc_status[1] & 0x2) == 0x2) { 1848 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1849 error = EROFS; 1850 goto failsilent; 1851 } 1852 /* try again */ 1853 fdc->sc_state = 1854 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1855 break; 1856 1857 case 1: case 2: case 3: 1858 /* didn't work; try recalibrating */ 1859 fdc->sc_state = DORECAL; 1860 break; 1861 1862 case 4: 1863 if (fdc->sc_nstat == 7 && 1864 fdc->sc_status[0] == 0 && 1865 fdc->sc_status[1] == 0 && 1866 fdc->sc_status[2] == 0) { 1867 /* 1868 * We've retried a few times and we've got 1869 * valid status and all three status bytes 1870 * are zero. Assume this condition is the 1871 * result of no disk loaded into the drive. 1872 */ 1873 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1874 error = ENODEV; 1875 goto failsilent; 1876 } 1877 1878 /* still no go; reset the bastard */ 1879 fdc->sc_state = DORESET; 1880 break; 1881 1882 default: 1883 fail: 1884 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1885 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1886 fd->sc_skip / FD_BSIZE(fd), 1887 (struct disklabel *)NULL); 1888 printf("\n"); 1889 fdcstatus(fdc, "controller status"); 1890 } 1891 1892 failsilent: 1893 bp->b_error = error; 1894 fdfinish(fd, bp); 1895 } 1896 fdc->sc_errors++; 1897 } 1898 1899 int 1900 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1901 { 1902 struct fd_softc *fd; 1903 struct fdc_softc *fdc; 1904 struct fdformat_parms *form_parms; 1905 struct fdformat_cmd *form_cmd; 1906 struct ne7_fd_formb *fd_formb; 1907 int il[FD_MAX_NSEC + 1]; 1908 int unit; 1909 int i, j; 1910 int error; 1911 1912 unit = FDUNIT(dev); 1913 if (unit >= fd_cd.cd_ndevs) 1914 return (ENXIO); 1915 1916 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1917 fdc = device_private(device_parent(&fd->sc_dv)); 1918 1919 switch (cmd) { 1920 case DIOCGDINFO: 1921 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1922 return 0; 1923 1924 case DIOCWLABEL: 1925 if ((flag & FWRITE) == 0) 1926 return EBADF; 1927 /* XXX do something */ 1928 return (0); 1929 1930 case DIOCWDINFO: 1931 if ((flag & FWRITE) == 0) 1932 return (EBADF); 1933 1934 error = setdisklabel(fd->sc_dk.dk_label, 1935 (struct disklabel *)addr, 0, 1936 fd->sc_dk.dk_cpulabel); 1937 if (error) 1938 return (error); 1939 1940 error = writedisklabel(dev, fdstrategy, 1941 fd->sc_dk.dk_label, 1942 fd->sc_dk.dk_cpulabel); 1943 return (error); 1944 1945 case DIOCLOCK: 1946 /* 1947 * Nothing to do here, really. 1948 */ 1949 return (0); 1950 1951 case DIOCEJECT: 1952 if (*(int *)addr == 0) { 1953 int part = DISKPART(dev); 1954 /* 1955 * Don't force eject: check that we are the only 1956 * partition open. If so, unlock it. 1957 */ 1958 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1959 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1960 fd->sc_dk.dk_openmask) { 1961 return (EBUSY); 1962 } 1963 } 1964 /* FALLTHROUGH */ 1965 case ODIOCEJECT: 1966 fd_do_eject(fd); 1967 return (0); 1968 1969 case FDIOCGETFORMAT: 1970 form_parms = (struct fdformat_parms *)addr; 1971 form_parms->fdformat_version = FDFORMAT_VERSION; 1972 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1973 form_parms->ncyl = fd->sc_type->cylinders; 1974 form_parms->nspt = fd->sc_type->sectrac; 1975 form_parms->ntrk = fd->sc_type->heads; 1976 form_parms->stepspercyl = fd->sc_type->step; 1977 form_parms->gaplen = fd->sc_type->gap2; 1978 form_parms->fillbyte = fd->sc_type->fillbyte; 1979 form_parms->interleave = fd->sc_type->interleave; 1980 switch (fd->sc_type->rate) { 1981 case FDC_500KBPS: 1982 form_parms->xfer_rate = 500 * 1024; 1983 break; 1984 case FDC_300KBPS: 1985 form_parms->xfer_rate = 300 * 1024; 1986 break; 1987 case FDC_250KBPS: 1988 form_parms->xfer_rate = 250 * 1024; 1989 break; 1990 default: 1991 return (EINVAL); 1992 } 1993 return (0); 1994 1995 case FDIOCSETFORMAT: 1996 if ((flag & FWRITE) == 0) 1997 return (EBADF); /* must be opened for writing */ 1998 1999 form_parms = (struct fdformat_parms *)addr; 2000 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2001 return (EINVAL);/* wrong version of formatting prog */ 2002 2003 i = form_parms->nbps >> 7; 2004 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2005 i & ~(1 << (ffs(i)-1))) 2006 /* not a power-of-two multiple of 128 */ 2007 return (EINVAL); 2008 2009 switch (form_parms->xfer_rate) { 2010 case 500 * 1024: 2011 fd->sc_type->rate = FDC_500KBPS; 2012 break; 2013 case 300 * 1024: 2014 fd->sc_type->rate = FDC_300KBPS; 2015 break; 2016 case 250 * 1024: 2017 fd->sc_type->rate = FDC_250KBPS; 2018 break; 2019 default: 2020 return (EINVAL); 2021 } 2022 2023 if (form_parms->nspt > FD_MAX_NSEC || 2024 form_parms->fillbyte > 0xff || 2025 form_parms->interleave > 0xff) 2026 return EINVAL; 2027 fd->sc_type->sectrac = form_parms->nspt; 2028 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2029 return EINVAL; 2030 fd->sc_type->heads = form_parms->ntrk; 2031 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2032 fd->sc_type->secsize = ffs(i)-1; 2033 fd->sc_type->gap2 = form_parms->gaplen; 2034 fd->sc_type->cylinders = form_parms->ncyl; 2035 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2036 form_parms->nbps / DEV_BSIZE; 2037 fd->sc_type->step = form_parms->stepspercyl; 2038 fd->sc_type->fillbyte = form_parms->fillbyte; 2039 fd->sc_type->interleave = form_parms->interleave; 2040 return (0); 2041 2042 case FDIOCFORMAT_TRACK: 2043 if((flag & FWRITE) == 0) 2044 /* must be opened for writing */ 2045 return (EBADF); 2046 form_cmd = (struct fdformat_cmd *)addr; 2047 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2048 /* wrong version of formatting prog */ 2049 return (EINVAL); 2050 2051 if (form_cmd->head >= fd->sc_type->heads || 2052 form_cmd->cylinder >= fd->sc_type->cylinders) { 2053 return (EINVAL); 2054 } 2055 2056 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2057 M_TEMP, M_NOWAIT); 2058 if (fd_formb == 0) 2059 return (ENOMEM); 2060 2061 fd_formb->head = form_cmd->head; 2062 fd_formb->cyl = form_cmd->cylinder; 2063 fd_formb->transfer_rate = fd->sc_type->rate; 2064 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2065 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2066 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2067 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2068 2069 bzero(il, sizeof il); 2070 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2071 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2072 j++; 2073 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2074 j += fd->sc_type->interleave; 2075 } 2076 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2077 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2078 fd_formb->fd_formb_headno(i) = form_cmd->head; 2079 fd_formb->fd_formb_secno(i) = il[i+1]; 2080 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2081 } 2082 2083 error = fdformat(dev, fd_formb, l->l_proc); 2084 free(fd_formb, M_TEMP); 2085 return error; 2086 2087 case FDIOCGETOPTS: /* get drive options */ 2088 *(int *)addr = fd->sc_opts; 2089 return (0); 2090 2091 case FDIOCSETOPTS: /* set drive options */ 2092 fd->sc_opts = *(int *)addr; 2093 return (0); 2094 2095 #ifdef FD_DEBUG 2096 case _IO('f', 100): 2097 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2098 fdcresult(fdc); 2099 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2100 for (i = 0; i < fdc->sc_nstat; i++) 2101 printf(" 0x%x", fdc->sc_status[i]); 2102 printf(">\n"); 2103 return (0); 2104 2105 case _IOW('f', 101, int): 2106 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2107 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2108 fdconf(fdc); 2109 return (0); 2110 2111 case _IO('f', 102): 2112 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2113 fdcresult(fdc); 2114 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2115 for (i=0; i< fdc->sc_nstat; i++) 2116 printf(" 0x%x", fdc->sc_status[i]); 2117 printf(">\n"); 2118 return (0); 2119 #endif 2120 default: 2121 return (ENOTTY); 2122 } 2123 2124 #ifdef DIAGNOSTIC 2125 panic("fdioctl: impossible"); 2126 #endif 2127 } 2128 2129 int 2130 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2131 { 2132 int rv = 0; 2133 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2134 struct fd_type *type = fd->sc_type; 2135 struct buf *bp; 2136 2137 /* set up a buffer header for fdstrategy() */ 2138 bp = getiobuf(NULL, false); 2139 if (bp == NULL) 2140 return (ENOBUFS); 2141 2142 bp->b_vp = NULL; 2143 bp->b_cflags = BC_BUSY; 2144 bp->b_flags = B_PHYS | B_FORMAT; 2145 bp->b_proc = p; 2146 bp->b_dev = dev; 2147 2148 /* 2149 * Calculate a fake blkno, so fdstrategy() would initiate a 2150 * seek to the requested cylinder. 2151 */ 2152 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2153 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2154 / DEV_BSIZE; 2155 2156 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2157 bp->b_data = (void *)finfo; 2158 2159 #ifdef FD_DEBUG 2160 if (fdc_debug) { 2161 int i; 2162 2163 printf("fdformat: blkno 0x%llx count %d\n", 2164 (unsigned long long)bp->b_blkno, bp->b_bcount); 2165 2166 printf("\tcyl:\t%d\n", finfo->cyl); 2167 printf("\thead:\t%d\n", finfo->head); 2168 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2169 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2170 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2171 printf("\ttrack data:"); 2172 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2173 printf(" [c%d h%d s%d]", 2174 finfo->fd_formb_cylno(i), 2175 finfo->fd_formb_headno(i), 2176 finfo->fd_formb_secno(i) ); 2177 if (finfo->fd_formb_secsize(i) != 2) 2178 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2179 } 2180 printf("\n"); 2181 } 2182 #endif 2183 2184 /* now do the format */ 2185 fdstrategy(bp); 2186 2187 /* ...and wait for it to complete */ 2188 rv = biowait(bp); 2189 putiobuf(bp); 2190 return (rv); 2191 } 2192 2193 void 2194 fdgetdisklabel(dev_t dev) 2195 { 2196 int unit = FDUNIT(dev), i; 2197 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2198 struct disklabel *lp = fd->sc_dk.dk_label; 2199 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2200 2201 bzero(lp, sizeof(struct disklabel)); 2202 bzero(lp, sizeof(struct cpu_disklabel)); 2203 2204 lp->d_type = DTYPE_FLOPPY; 2205 lp->d_secsize = FD_BSIZE(fd); 2206 lp->d_secpercyl = fd->sc_type->seccyl; 2207 lp->d_nsectors = fd->sc_type->sectrac; 2208 lp->d_ncylinders = fd->sc_type->cylinders; 2209 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2210 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2211 lp->d_rpm = 3600; /* XXX like it matters... */ 2212 2213 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2214 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2215 lp->d_interleave = 1; 2216 2217 lp->d_partitions[RAW_PART].p_offset = 0; 2218 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2219 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2220 lp->d_npartitions = RAW_PART + 1; 2221 2222 lp->d_magic = DISKMAGIC; 2223 lp->d_magic2 = DISKMAGIC; 2224 lp->d_checksum = dkcksum(lp); 2225 2226 /* 2227 * Call the generic disklabel extraction routine. If there's 2228 * not a label there, fake it. 2229 */ 2230 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2231 strncpy(lp->d_packname, "default label", 2232 sizeof(lp->d_packname)); 2233 /* 2234 * Reset the partition info; it might have gotten 2235 * trashed in readdisklabel(). 2236 * 2237 * XXX Why do we have to do this? readdisklabel() 2238 * should be safe... 2239 */ 2240 for (i = 0; i < MAXPARTITIONS; ++i) { 2241 lp->d_partitions[i].p_offset = 0; 2242 if (i == RAW_PART) { 2243 lp->d_partitions[i].p_size = 2244 lp->d_secpercyl * lp->d_ncylinders; 2245 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2246 } else { 2247 lp->d_partitions[i].p_size = 0; 2248 lp->d_partitions[i].p_fstype = FS_UNUSED; 2249 } 2250 } 2251 lp->d_npartitions = RAW_PART + 1; 2252 } 2253 } 2254 2255 void 2256 fd_do_eject(struct fd_softc *fd) 2257 { 2258 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 2259 2260 if (CPU_ISSUN4C) { 2261 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2262 delay(10); 2263 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2264 return; 2265 } 2266 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2267 bus_space_tag_t t = fdc->sc_bustag; 2268 bus_space_handle_t h = fdc->sc_handle; 2269 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2270 2271 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2272 delay(10); 2273 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2274 return; 2275 } 2276 } 2277 2278 /* ARGSUSED */ 2279 void 2280 fd_mountroot_hook(struct device *dev) 2281 { 2282 int c; 2283 2284 fd_do_eject(device_private(dev)); 2285 printf("Insert filesystem floppy and press return."); 2286 for (;;) { 2287 c = cngetc(); 2288 if ((c == '\r') || (c == '\n')) { 2289 printf("\n"); 2290 break; 2291 } 2292 } 2293 } 2294 2295 #ifdef MEMORY_DISK_HOOKS 2296 2297 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2298 2299 int 2300 fd_read_md_image(size_t *sizep, void * *addrp) 2301 { 2302 struct buf buf, *bp = &buf; 2303 dev_t dev; 2304 off_t offset; 2305 void *addr; 2306 2307 dev = makedev(54,0); /* XXX */ 2308 2309 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2310 *addrp = addr; 2311 2312 if (fdopen(dev, 0, S_IFCHR, NULL)) 2313 panic("fd: mountroot: fdopen"); 2314 2315 offset = 0; 2316 2317 for (;;) { 2318 bp->b_dev = dev; 2319 bp->b_error = 0; 2320 bp->b_resid = 0; 2321 bp->b_proc = NULL; 2322 bp->b_cflags |= BC_BUSY; 2323 bp->b_flags = B_PHYS | B_RAW | B_READ; 2324 bp->b_blkno = btodb(offset); 2325 bp->b_bcount = DEV_BSIZE; 2326 bp->b_data = addr; 2327 fdstrategy(bp); 2328 biowait(bp); 2329 if (bp->b_error) 2330 panic("fd: mountroot: fdread error %d", bp->b_error); 2331 2332 if (bp->b_resid != 0) 2333 break; 2334 2335 addr = (char *)addr + DEV_BSIZE; 2336 offset += DEV_BSIZE; 2337 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2338 break; 2339 } 2340 (void)fdclose(dev, 0, S_IFCHR, NULL); 2341 *sizep = offset; 2342 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2343 return (0); 2344 } 2345 #endif /* MEMORY_DISK_HOOKS */ 2346
Indexes created Fri Oct 03 02:09:57 GMT 2025