1 /* $NetBSD: fd.c,v 1.146 2009/05/25 19:22:53 jnemeth 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 1.146 2009/05/25 19:22:53 jnemeth 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 TAILQ_ENTRY(fd_softc) sc_drivechain; 286 int sc_ops; /* I/O ops since last switch */ 287 struct bufq_state *sc_q;/* pending I/O requests */ 288 int sc_active; /* number of active I/O requests */ 289 }; 290 291 /* floppy driver configuration */ 292 int fdmatch(struct device *, struct cfdata *, void *); 293 void fdattach(struct device *, struct device *, void *); 294 bool fdshutdown(device_t, int); 295 bool fdsuspend(device_t PMF_FN_PROTO); 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 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 795 aprint_error_dev(self, "couldn't establish power handler\n"); 796 } 797 798 bool fdshutdown(device_t self, int how) 799 { 800 struct fd_softc *fd = device_private(self); 801 802 fd_motor_off(fd); 803 return true; 804 } 805 806 bool fdsuspend(device_t self PMF_FN_ARGS) 807 { 808 809 return fdshutdown(self, boothowto); 810 } 811 812 813 inline struct fd_type * 814 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 815 { 816 int type = FDTYPE(dev); 817 818 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 819 return (NULL); 820 return (type ? &fd_types[type - 1] : fd->sc_deftype); 821 } 822 823 void 824 fdstrategy(struct buf *bp) 825 { 826 struct fd_softc *fd; 827 int unit = FDUNIT(bp->b_dev); 828 int sz; 829 int s; 830 831 /* Valid unit, controller, and request? */ 832 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 833 bp->b_blkno < 0 || 834 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 835 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 836 (bp->b_flags & B_FORMAT) == 0)) { 837 bp->b_error = EINVAL; 838 goto done; 839 } 840 841 /* If it's a null transfer, return immediately. */ 842 if (bp->b_bcount == 0) 843 goto done; 844 845 sz = howmany(bp->b_bcount, DEV_BSIZE); 846 847 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 848 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 849 - bp->b_blkno; 850 if (sz == 0) { 851 /* If exactly at end of disk, return EOF. */ 852 bp->b_resid = bp->b_bcount; 853 goto done; 854 } 855 if (sz < 0) { 856 /* If past end of disk, return EINVAL. */ 857 bp->b_error = EINVAL; 858 goto done; 859 } 860 /* Otherwise, truncate request. */ 861 bp->b_bcount = sz << DEV_BSHIFT; 862 } 863 864 bp->b_rawblkno = bp->b_blkno; 865 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 866 (FD_BSIZE(fd) * fd->sc_type->seccyl); 867 868 #ifdef FD_DEBUG 869 if (fdc_debug > 1) 870 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 871 (long long)bp->b_blkno, bp->b_bcount, 872 (long long)fd->sc_blkno, bp->b_cylinder); 873 #endif 874 875 /* Queue transfer on drive, activate drive and controller if idle. */ 876 s = splbio(); 877 bufq_put(fd->sc_q, bp); 878 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 879 if (fd->sc_active == 0) 880 fdstart(fd); 881 #ifdef DIAGNOSTIC 882 else { 883 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 884 if (fdc->sc_state == DEVIDLE) { 885 printf("fdstrategy: controller inactive\n"); 886 fdcstart(fdc); 887 } 888 } 889 #endif 890 splx(s); 891 return; 892 893 done: 894 /* Toss transfer; we're done early. */ 895 biodone(bp); 896 } 897 898 void 899 fdstart(struct fd_softc *fd) 900 { 901 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 902 int active = fdc->sc_drives.tqh_first != 0; 903 904 /* Link into controller queue. */ 905 fd->sc_active = 1; 906 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 907 908 /* If controller not already active, start it. */ 909 if (!active) 910 fdcstart(fdc); 911 } 912 913 void 914 fdfinish(struct fd_softc *fd, struct buf *bp) 915 { 916 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 917 918 /* 919 * Move this drive to the end of the queue to give others a `fair' 920 * chance. We only force a switch if N operations are completed while 921 * another drive is waiting to be serviced, since there is a long motor 922 * startup delay whenever we switch. 923 */ 924 (void)bufq_get(fd->sc_q); 925 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 926 fd->sc_ops = 0; 927 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 928 if (bufq_peek(fd->sc_q) != NULL) { 929 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 930 } else 931 fd->sc_active = 0; 932 } 933 bp->b_resid = fd->sc_bcount; 934 fd->sc_skip = 0; 935 936 biodone(bp); 937 /* turn off motor 5s from now */ 938 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 939 fdc->sc_state = DEVIDLE; 940 } 941 942 void 943 fdc_reset(struct fdc_softc *fdc) 944 { 945 bus_space_tag_t t = fdc->sc_bustag; 946 bus_space_handle_t h = fdc->sc_handle; 947 948 if ((fdc->sc_flags & FDC_82077) != 0) { 949 bus_space_write_1(t, h, fdc->sc_reg_dor, 950 FDO_FDMAEN | FDO_MOEN(0)); 951 } 952 953 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 954 delay(10); 955 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 956 957 if ((fdc->sc_flags & FDC_82077) != 0) { 958 bus_space_write_1(t, h, fdc->sc_reg_dor, 959 FDO_FRST | FDO_FDMAEN | FDO_DS); 960 } 961 #ifdef FD_DEBUG 962 if (fdc_debug) 963 printf("fdc reset\n"); 964 #endif 965 } 966 967 void 968 fd_set_motor(struct fdc_softc *fdc) 969 { 970 struct fd_softc *fd; 971 u_char status; 972 int n; 973 974 if ((fdc->sc_flags & FDC_82077) != 0) { 975 status = FDO_FRST | FDO_FDMAEN; 976 if ((fd = fdc->sc_drives.tqh_first) != NULL) 977 status |= fd->sc_drive; 978 979 for (n = 0; n < 4; n++) 980 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 981 status |= FDO_MOEN(n); 982 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 983 fdc->sc_reg_dor, status); 984 } else { 985 986 for (n = 0; n < 4; n++) { 987 if ((fd = fdc->sc_fd[n]) != NULL && 988 (fd->sc_flags & FD_MOTOR) != 0) { 989 auxregbisc(AUXIO4C_FDS, 0); 990 return; 991 } 992 } 993 auxregbisc(0, AUXIO4C_FDS); 994 } 995 } 996 997 void 998 fd_motor_off(void *arg) 999 { 1000 struct fd_softc *fd = arg; 1001 int s; 1002 1003 s = splbio(); 1004 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1005 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1006 splx(s); 1007 } 1008 1009 void 1010 fd_motor_on(void *arg) 1011 { 1012 struct fd_softc *fd = arg; 1013 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 1014 int s; 1015 1016 s = splbio(); 1017 fd->sc_flags &= ~FD_MOTOR_WAIT; 1018 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1019 (void) fdcstate(fdc); 1020 splx(s); 1021 } 1022 1023 /* 1024 * Get status bytes off the FDC after a command has finished 1025 * Returns the number of status bytes read; -1 on error. 1026 * The return value is also stored in `sc_nstat'. 1027 */ 1028 int 1029 fdcresult(struct fdc_softc *fdc) 1030 { 1031 bus_space_tag_t t = fdc->sc_bustag; 1032 bus_space_handle_t h = fdc->sc_handle; 1033 int j, n = 0; 1034 1035 for (j = 10000; j; j--) { 1036 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1037 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1038 if (v == NE7_RQM) 1039 return (fdc->sc_nstat = n); 1040 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1041 if (n >= sizeof(fdc->sc_status)) { 1042 log(LOG_ERR, "fdcresult: overrun\n"); 1043 return (-1); 1044 } 1045 fdc->sc_status[n++] = 1046 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1047 } else 1048 delay(1); 1049 } 1050 1051 log(LOG_ERR, "fdcresult: timeout\n"); 1052 return (fdc->sc_nstat = -1); 1053 } 1054 1055 /* 1056 * Write a command byte to the FDC. 1057 * Returns 0 on success; -1 on failure (i.e. timeout) 1058 */ 1059 int 1060 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1061 { 1062 bus_space_tag_t t = fdc->sc_bustag; 1063 bus_space_handle_t h = fdc->sc_handle; 1064 int i; 1065 1066 for (i = 100000; i-- > 0;) { 1067 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1068 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1069 /* The chip is ready */ 1070 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1071 return (0); 1072 } 1073 delay(1); 1074 } 1075 return (-1); 1076 } 1077 1078 int 1079 fdc_diskchange(struct fdc_softc *fdc) 1080 { 1081 1082 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1083 bus_space_tag_t t = fdc->sc_bustag; 1084 bus_space_handle_t h = fdc->sc_handle; 1085 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1086 return ((v & FDI_DCHG) != 0); 1087 } else if (CPU_ISSUN4C) { 1088 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1089 } 1090 return (0); 1091 } 1092 1093 int 1094 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1095 { 1096 int unit, pmask; 1097 struct fd_softc *fd; 1098 struct fd_type *type; 1099 1100 unit = FDUNIT(dev); 1101 fd = device_lookup_private(&fd_cd, unit); 1102 if (fd == NULL) 1103 return (ENXIO); 1104 type = fd_dev_to_type(fd, dev); 1105 if (type == NULL) 1106 return (ENXIO); 1107 1108 if ((fd->sc_flags & FD_OPEN) != 0 && 1109 fd->sc_type != type) 1110 return (EBUSY); 1111 1112 fd->sc_type = type; 1113 fd->sc_cylin = -1; 1114 fd->sc_flags |= FD_OPEN; 1115 1116 /* 1117 * Only update the disklabel if we're not open anywhere else. 1118 */ 1119 if (fd->sc_dk.dk_openmask == 0) 1120 fdgetdisklabel(dev); 1121 1122 pmask = (1 << DISKPART(dev)); 1123 1124 switch (fmt) { 1125 case S_IFCHR: 1126 fd->sc_dk.dk_copenmask |= pmask; 1127 break; 1128 1129 case S_IFBLK: 1130 fd->sc_dk.dk_bopenmask |= pmask; 1131 break; 1132 } 1133 fd->sc_dk.dk_openmask = 1134 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1135 1136 return (0); 1137 } 1138 1139 int 1140 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1141 { 1142 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1143 int pmask = (1 << DISKPART(dev)); 1144 1145 fd->sc_flags &= ~FD_OPEN; 1146 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1147 1148 switch (fmt) { 1149 case S_IFCHR: 1150 fd->sc_dk.dk_copenmask &= ~pmask; 1151 break; 1152 1153 case S_IFBLK: 1154 fd->sc_dk.dk_bopenmask &= ~pmask; 1155 break; 1156 } 1157 fd->sc_dk.dk_openmask = 1158 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1159 1160 return (0); 1161 } 1162 1163 int 1164 fdread(dev_t dev, struct uio *uio, int flag) 1165 { 1166 1167 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1168 } 1169 1170 int 1171 fdwrite(dev_t dev, struct uio *uio, int flag) 1172 { 1173 1174 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1175 } 1176 1177 void 1178 fdcstart(struct fdc_softc *fdc) 1179 { 1180 1181 #ifdef DIAGNOSTIC 1182 /* only got here if controller's drive queue was inactive; should 1183 be in idle state */ 1184 if (fdc->sc_state != DEVIDLE) { 1185 printf("fdcstart: not idle\n"); 1186 return; 1187 } 1188 #endif 1189 (void) fdcstate(fdc); 1190 } 1191 1192 static void 1193 fdcpstatus(int n, struct fdc_softc *fdc) 1194 { 1195 char bits[64]; 1196 1197 switch (n) { 1198 case 0: 1199 printf("\n"); 1200 break; 1201 case 2: 1202 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1203 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1204 break; 1205 case 7: 1206 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1207 printf(" (st0 %s", bits); 1208 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1209 printf(" st1 %s", bits); 1210 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1211 printf(" st2 %s", bits); 1212 printf(" cyl %d head %d sec %d)\n", 1213 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1214 break; 1215 #ifdef DIAGNOSTIC 1216 default: 1217 printf("\nfdcstatus: weird size"); 1218 break; 1219 #endif 1220 } 1221 } 1222 1223 void 1224 fdcstatus(struct fdc_softc *fdc, const char *s) 1225 { 1226 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1227 int n; 1228 1229 /* Just print last status */ 1230 n = fdc->sc_nstat; 1231 1232 #if 0 1233 /* 1234 * A 82072 seems to return <invalid command> on 1235 * gratuitous Sense Interrupt commands. 1236 */ 1237 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1238 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1239 (void) fdcresult(fdc); 1240 n = 2; 1241 } 1242 #endif 1243 1244 printf("%s: %s: state %d", 1245 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1246 1247 fdcpstatus(n, fdc); 1248 } 1249 1250 void 1251 fdctimeout(void *arg) 1252 { 1253 struct fdc_softc *fdc = arg; 1254 struct fd_softc *fd; 1255 int s; 1256 1257 s = splbio(); 1258 fd = fdc->sc_drives.tqh_first; 1259 if (fd == NULL) { 1260 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1261 fdc->sc_dev.dv_xname, 1262 fdc->sc_state, fdc->sc_istatus); 1263 fdc->sc_state = DEVIDLE; 1264 goto out; 1265 } 1266 1267 if (bufq_peek(fd->sc_q) != NULL) 1268 fdc->sc_state++; 1269 else 1270 fdc->sc_state = DEVIDLE; 1271 1272 (void) fdcstate(fdc); 1273 out: 1274 splx(s); 1275 1276 } 1277 1278 void 1279 fdcpseudointr(void *arg) 1280 { 1281 struct fdc_softc *fdc = arg; 1282 int s; 1283 1284 /* Just ensure it has the right spl. */ 1285 s = splbio(); 1286 (void) fdcstate(fdc); 1287 splx(s); 1288 } 1289 1290 1291 /* 1292 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1293 * handler is available. Unfortunately, we have no reliable way to 1294 * determine that the interrupt really came from the floppy controller; 1295 * just hope that the other devices that share this interrupt level 1296 * can do better.. 1297 */ 1298 int 1299 fdc_c_hwintr(void *arg) 1300 { 1301 struct fdc_softc *fdc = arg; 1302 bus_space_tag_t t = fdc->sc_bustag; 1303 bus_space_handle_t h = fdc->sc_handle; 1304 1305 switch (fdc->sc_itask) { 1306 case FDC_ITASK_NONE: 1307 return (0); 1308 case FDC_ITASK_SENSEI: 1309 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1310 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1311 else 1312 fdc->sc_istatus = FDC_ISTATUS_DONE; 1313 softint_schedule(fdc->sc_sicookie); 1314 return (1); 1315 case FDC_ITASK_RESULT: 1316 if (fdcresult(fdc) == -1) 1317 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1318 else 1319 fdc->sc_istatus = FDC_ISTATUS_DONE; 1320 softint_schedule(fdc->sc_sicookie); 1321 return (1); 1322 case FDC_ITASK_DMA: 1323 /* Proceed with pseudo-DMA below */ 1324 break; 1325 default: 1326 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1327 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1328 softint_schedule(fdc->sc_sicookie); 1329 return (1); 1330 } 1331 1332 /* 1333 * Pseudo DMA in progress 1334 */ 1335 for (;;) { 1336 uint8_t msr; 1337 1338 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1339 1340 if ((msr & NE7_RQM) == 0) 1341 /* That's all this round */ 1342 break; 1343 1344 if ((msr & NE7_NDM) == 0) { 1345 /* Execution phase finished, get result. */ 1346 fdcresult(fdc); 1347 fdc->sc_istatus = FDC_ISTATUS_DONE; 1348 softint_schedule(fdc->sc_sicookie); 1349 break; 1350 } 1351 1352 if (fdc->sc_tc == 0) 1353 /* For some reason the controller wants to transfer 1354 more data then what we want to transfer. */ 1355 panic("fdc: overrun"); 1356 1357 /* Another byte can be transferred */ 1358 if ((msr & NE7_DIO) != 0) 1359 *fdc->sc_data = 1360 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1361 else 1362 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1363 *fdc->sc_data); 1364 1365 fdc->sc_data++; 1366 if (--fdc->sc_tc == 0) { 1367 FTC_FLIP; 1368 break; 1369 } 1370 } 1371 return (1); 1372 } 1373 1374 void 1375 fdcswintr(void *arg) 1376 { 1377 struct fdc_softc *fdc = arg; 1378 1379 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1380 /* This (software) interrupt is not for us */ 1381 return; 1382 1383 switch (fdc->sc_istatus) { 1384 case FDC_ISTATUS_ERROR: 1385 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1386 break; 1387 case FDC_ISTATUS_SPURIOUS: 1388 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1389 break; 1390 } 1391 1392 fdcstate(fdc); 1393 return; 1394 } 1395 1396 int 1397 fdcstate(struct fdc_softc *fdc) 1398 { 1399 1400 #define st0 fdc->sc_status[0] 1401 #define st1 fdc->sc_status[1] 1402 #define cyl fdc->sc_status[1] 1403 #define FDC_WRFIFO(fdc, c) do { \ 1404 if (fdc_wrfifo(fdc, (c))) { \ 1405 goto xxx; \ 1406 } \ 1407 } while(0) 1408 1409 struct fd_softc *fd; 1410 struct buf *bp; 1411 int read, head, sec, nblks; 1412 struct fd_type *type; 1413 struct ne7_fd_formb *finfo = NULL; 1414 1415 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1416 /* Prevent loop if the reset sequence produces errors */ 1417 if (fdc->sc_state != RESETCOMPLETE && 1418 fdc->sc_state != RECALWAIT && 1419 fdc->sc_state != RECALCOMPLETE) 1420 fdc->sc_state = DORESET; 1421 } 1422 1423 /* Clear I task/status field */ 1424 fdc->sc_istatus = FDC_ISTATUS_NONE; 1425 fdc->sc_itask = FDC_ITASK_NONE; 1426 1427 loop: 1428 /* Is there a drive for the controller to do a transfer with? */ 1429 fd = fdc->sc_drives.tqh_first; 1430 if (fd == NULL) { 1431 fdc->sc_state = DEVIDLE; 1432 return (0); 1433 } 1434 1435 /* Is there a transfer to this drive? If not, deactivate drive. */ 1436 bp = bufq_peek(fd->sc_q); 1437 if (bp == NULL) { 1438 fd->sc_ops = 0; 1439 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1440 fd->sc_active = 0; 1441 goto loop; 1442 } 1443 1444 if (bp->b_flags & B_FORMAT) 1445 finfo = (struct ne7_fd_formb *)bp->b_data; 1446 1447 switch (fdc->sc_state) { 1448 case DEVIDLE: 1449 fdc->sc_errors = 0; 1450 fd->sc_skip = 0; 1451 fd->sc_bcount = bp->b_bcount; 1452 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1453 callout_stop(&fd->sc_motoroff_ch); 1454 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1455 fdc->sc_state = MOTORWAIT; 1456 return (1); 1457 } 1458 if ((fd->sc_flags & FD_MOTOR) == 0) { 1459 /* Turn on the motor, being careful about pairing. */ 1460 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1461 if (ofd && ofd->sc_flags & FD_MOTOR) { 1462 callout_stop(&ofd->sc_motoroff_ch); 1463 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1464 } 1465 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1466 fd_set_motor(fdc); 1467 fdc->sc_state = MOTORWAIT; 1468 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1469 /* Allow .25s for motor to stabilize. */ 1470 callout_reset(&fd->sc_motoron_ch, hz / 4, 1471 fd_motor_on, fd); 1472 } else { 1473 fd->sc_flags &= ~FD_MOTOR_WAIT; 1474 goto loop; 1475 } 1476 return (1); 1477 } 1478 /* Make sure the right drive is selected. */ 1479 fd_set_motor(fdc); 1480 1481 if (fdc_diskchange(fdc)) 1482 goto dodskchg; 1483 1484 /*FALLTHROUGH*/ 1485 case DOSEEK: 1486 doseek: 1487 if ((fdc->sc_flags & FDC_EIS) && 1488 (bp->b_flags & B_FORMAT) == 0) { 1489 fd->sc_cylin = bp->b_cylinder; 1490 /* We use implied seek */ 1491 goto doio; 1492 } 1493 1494 if (fd->sc_cylin == bp->b_cylinder) 1495 goto doio; 1496 1497 fd->sc_cylin = -1; 1498 fdc->sc_state = SEEKWAIT; 1499 fdc->sc_nstat = 0; 1500 1501 iostat_seek(fd->sc_dk.dk_stats); 1502 1503 disk_busy(&fd->sc_dk); 1504 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1505 1506 /* specify command */ 1507 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1508 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1509 /* XXX head load time == 6ms */ 1510 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1511 1512 fdc->sc_itask = FDC_ITASK_SENSEI; 1513 /* seek function */ 1514 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1515 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1516 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1517 return (1); 1518 1519 case DODSKCHG: 1520 dodskchg: 1521 /* 1522 * Disk change: force a seek operation by going to cyl 1 1523 * followed by a recalibrate. 1524 */ 1525 disk_busy(&fd->sc_dk); 1526 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1527 fd->sc_cylin = -1; 1528 fdc->sc_nstat = 0; 1529 fdc->sc_state = DSKCHGWAIT; 1530 1531 fdc->sc_itask = FDC_ITASK_SENSEI; 1532 /* seek function */ 1533 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1534 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1535 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1536 return (1); 1537 1538 case DSKCHGWAIT: 1539 callout_stop(&fdc->sc_timo_ch); 1540 disk_unbusy(&fd->sc_dk, 0, 0); 1541 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1542 cyl != 1 * fd->sc_type->step) { 1543 fdcstatus(fdc, "dskchg seek failed"); 1544 fdc->sc_state = DORESET; 1545 } else 1546 fdc->sc_state = DORECAL; 1547 1548 if (fdc_diskchange(fdc)) { 1549 printf("%s: cannot clear disk change status\n", 1550 fdc->sc_dev.dv_xname); 1551 fdc->sc_state = DORESET; 1552 } 1553 goto loop; 1554 1555 case DOIO: 1556 doio: 1557 if (finfo != NULL) 1558 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1559 (char *)finfo; 1560 type = fd->sc_type; 1561 sec = fd->sc_blkno % type->seccyl; 1562 nblks = type->seccyl - sec; 1563 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1564 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1565 fd->sc_nblks = nblks; 1566 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1567 head = sec / type->sectrac; 1568 sec -= head * type->sectrac; 1569 #ifdef DIAGNOSTIC 1570 {int block; 1571 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1572 if (block != fd->sc_blkno) { 1573 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1574 #ifdef DDB 1575 Debugger(); 1576 #endif 1577 }} 1578 #endif 1579 read = bp->b_flags & B_READ; 1580 1581 /* Setup for pseudo DMA */ 1582 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1583 fdc->sc_tc = fd->sc_nbytes; 1584 1585 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1586 fdc->sc_reg_drs, type->rate); 1587 #ifdef FD_DEBUG 1588 if (fdc_debug > 1) 1589 printf("fdcstate: doio: %s drive %d " 1590 "track %d head %d sec %d nblks %d\n", 1591 finfo ? "format" : 1592 (read ? "read" : "write"), 1593 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1594 #endif 1595 fdc->sc_state = IOCOMPLETE; 1596 fdc->sc_itask = FDC_ITASK_DMA; 1597 fdc->sc_nstat = 0; 1598 1599 disk_busy(&fd->sc_dk); 1600 1601 /* allow 3 seconds for operation */ 1602 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1603 1604 if (finfo != NULL) { 1605 /* formatting */ 1606 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1607 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1608 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1609 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1610 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1611 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1612 } else { 1613 if (read) 1614 FDC_WRFIFO(fdc, NE7CMD_READ); 1615 else 1616 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1617 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1618 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1619 FDC_WRFIFO(fdc, head); 1620 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1621 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1622 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1623 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1624 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1625 } 1626 1627 return (1); /* will return later */ 1628 1629 case SEEKWAIT: 1630 callout_stop(&fdc->sc_timo_ch); 1631 fdc->sc_state = SEEKCOMPLETE; 1632 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1633 /* allow 1/50 second for heads to settle */ 1634 callout_reset(&fdc->sc_intr_ch, hz / 50, 1635 fdcpseudointr, fdc); 1636 return (1); /* will return later */ 1637 } 1638 /*FALLTHROUGH*/ 1639 case SEEKCOMPLETE: 1640 /* no data on seek */ 1641 disk_unbusy(&fd->sc_dk, 0, 0); 1642 1643 /* Make sure seek really happened. */ 1644 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1645 cyl != bp->b_cylinder * fd->sc_type->step) { 1646 #ifdef FD_DEBUG 1647 if (fdc_debug) 1648 fdcstatus(fdc, "seek failed"); 1649 #endif 1650 fdcretry(fdc); 1651 goto loop; 1652 } 1653 fd->sc_cylin = bp->b_cylinder; 1654 goto doio; 1655 1656 case IOTIMEDOUT: 1657 /* 1658 * Try to abort the I/O operation without resetting 1659 * the chip first. Poke TC and arrange to pick up 1660 * the timed out I/O command's status. 1661 */ 1662 fdc->sc_itask = FDC_ITASK_RESULT; 1663 fdc->sc_state = IOCLEANUPWAIT; 1664 fdc->sc_nstat = 0; 1665 /* 1/10 second should be enough */ 1666 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1667 FTC_FLIP; 1668 return (1); 1669 1670 case IOCLEANUPTIMEDOUT: 1671 case SEEKTIMEDOUT: 1672 case RECALTIMEDOUT: 1673 case RESETTIMEDOUT: 1674 case DSKCHGTIMEDOUT: 1675 fdcstatus(fdc, "timeout"); 1676 1677 /* All other timeouts always roll through to a chip reset */ 1678 fdcretry(fdc); 1679 1680 /* Force reset, no matter what fdcretry() says */ 1681 fdc->sc_state = DORESET; 1682 goto loop; 1683 1684 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1685 callout_stop(&fdc->sc_timo_ch); 1686 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1687 (bp->b_flags & B_READ)); 1688 fdcretry(fdc); 1689 goto loop; 1690 1691 case IOCOMPLETE: /* IO DONE, post-analyze */ 1692 callout_stop(&fdc->sc_timo_ch); 1693 1694 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1695 (bp->b_flags & B_READ)); 1696 1697 if (fdc->sc_nstat != 7 || st1 != 0 || 1698 ((st0 & 0xf8) != 0 && 1699 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1700 #ifdef FD_DEBUG 1701 if (fdc_debug) { 1702 fdcstatus(fdc, 1703 bp->b_flags & B_READ 1704 ? "read failed" : "write failed"); 1705 printf("blkno %lld nblks %d nstat %d tc %d\n", 1706 (long long)fd->sc_blkno, fd->sc_nblks, 1707 fdc->sc_nstat, fdc->sc_tc); 1708 } 1709 #endif 1710 if (fdc->sc_nstat == 7 && 1711 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1712 1713 /* 1714 * Silently retry overruns if no other 1715 * error bit is set. Adjust threshold. 1716 */ 1717 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1718 if (thr < 15) { 1719 thr++; 1720 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1721 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1722 #ifdef FD_DEBUG 1723 if (fdc_debug) 1724 printf("fdc: %d -> threshold\n", thr); 1725 #endif 1726 fdconf(fdc); 1727 fdc->sc_overruns = 0; 1728 } 1729 if (++fdc->sc_overruns < 3) { 1730 fdc->sc_state = DOIO; 1731 goto loop; 1732 } 1733 } 1734 fdcretry(fdc); 1735 goto loop; 1736 } 1737 if (fdc->sc_errors) { 1738 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1739 fd->sc_skip / FD_BSIZE(fd), 1740 (struct disklabel *)NULL); 1741 printf("\n"); 1742 fdc->sc_errors = 0; 1743 } else { 1744 if (--fdc->sc_overruns < -20) { 1745 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1746 if (thr > 0) { 1747 thr--; 1748 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1749 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1750 #ifdef FD_DEBUG 1751 if (fdc_debug) 1752 printf("fdc: %d -> threshold\n", thr); 1753 #endif 1754 fdconf(fdc); 1755 } 1756 fdc->sc_overruns = 0; 1757 } 1758 } 1759 fd->sc_blkno += fd->sc_nblks; 1760 fd->sc_skip += fd->sc_nbytes; 1761 fd->sc_bcount -= fd->sc_nbytes; 1762 if (finfo == NULL && fd->sc_bcount > 0) { 1763 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1764 goto doseek; 1765 } 1766 fdfinish(fd, bp); 1767 goto loop; 1768 1769 case DORESET: 1770 /* try a reset, keep motor on */ 1771 fd_set_motor(fdc); 1772 delay(100); 1773 fdc->sc_nstat = 0; 1774 fdc->sc_itask = FDC_ITASK_SENSEI; 1775 fdc->sc_state = RESETCOMPLETE; 1776 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1777 fdc_reset(fdc); 1778 return (1); /* will return later */ 1779 1780 case RESETCOMPLETE: 1781 callout_stop(&fdc->sc_timo_ch); 1782 fdconf(fdc); 1783 1784 /* FALLTHROUGH */ 1785 case DORECAL: 1786 fdc->sc_state = RECALWAIT; 1787 fdc->sc_itask = FDC_ITASK_SENSEI; 1788 fdc->sc_nstat = 0; 1789 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1790 /* recalibrate function */ 1791 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1792 FDC_WRFIFO(fdc, fd->sc_drive); 1793 return (1); /* will return later */ 1794 1795 case RECALWAIT: 1796 callout_stop(&fdc->sc_timo_ch); 1797 fdc->sc_state = RECALCOMPLETE; 1798 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1799 /* allow 1/30 second for heads to settle */ 1800 callout_reset(&fdc->sc_intr_ch, hz / 30, 1801 fdcpseudointr, fdc); 1802 return (1); /* will return later */ 1803 } 1804 1805 case RECALCOMPLETE: 1806 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1807 #ifdef FD_DEBUG 1808 if (fdc_debug) 1809 fdcstatus(fdc, "recalibrate failed"); 1810 #endif 1811 fdcretry(fdc); 1812 goto loop; 1813 } 1814 fd->sc_cylin = 0; 1815 goto doseek; 1816 1817 case MOTORWAIT: 1818 if (fd->sc_flags & FD_MOTOR_WAIT) 1819 return (1); /* time's not up yet */ 1820 goto doseek; 1821 1822 default: 1823 fdcstatus(fdc, "stray interrupt"); 1824 return (1); 1825 } 1826 #ifdef DIAGNOSTIC 1827 panic("fdcintr: impossible"); 1828 #endif 1829 1830 xxx: 1831 /* 1832 * We get here if the chip locks up in FDC_WRFIFO() 1833 * Cancel any operation and schedule a reset 1834 */ 1835 callout_stop(&fdc->sc_timo_ch); 1836 fdcretry(fdc); 1837 (fdc)->sc_state = DORESET; 1838 goto loop; 1839 1840 #undef st0 1841 #undef st1 1842 #undef cyl 1843 } 1844 1845 void 1846 fdcretry(struct fdc_softc *fdc) 1847 { 1848 struct fd_softc *fd; 1849 struct buf *bp; 1850 int error = EIO; 1851 1852 fd = fdc->sc_drives.tqh_first; 1853 bp = bufq_peek(fd->sc_q); 1854 1855 fdc->sc_overruns = 0; 1856 if (fd->sc_opts & FDOPT_NORETRY) 1857 goto fail; 1858 1859 switch (fdc->sc_errors) { 1860 case 0: 1861 if (fdc->sc_nstat == 7 && 1862 (fdc->sc_status[0] & 0xd8) == 0x40 && 1863 (fdc->sc_status[1] & 0x2) == 0x2) { 1864 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1865 error = EROFS; 1866 goto failsilent; 1867 } 1868 /* try again */ 1869 fdc->sc_state = 1870 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1871 break; 1872 1873 case 1: case 2: case 3: 1874 /* didn't work; try recalibrating */ 1875 fdc->sc_state = DORECAL; 1876 break; 1877 1878 case 4: 1879 if (fdc->sc_nstat == 7 && 1880 fdc->sc_status[0] == 0 && 1881 fdc->sc_status[1] == 0 && 1882 fdc->sc_status[2] == 0) { 1883 /* 1884 * We've retried a few times and we've got 1885 * valid status and all three status bytes 1886 * are zero. Assume this condition is the 1887 * result of no disk loaded into the drive. 1888 */ 1889 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1890 error = ENODEV; 1891 goto failsilent; 1892 } 1893 1894 /* still no go; reset the bastard */ 1895 fdc->sc_state = DORESET; 1896 break; 1897 1898 default: 1899 fail: 1900 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1901 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1902 fd->sc_skip / FD_BSIZE(fd), 1903 (struct disklabel *)NULL); 1904 printf("\n"); 1905 fdcstatus(fdc, "controller status"); 1906 } 1907 1908 failsilent: 1909 bp->b_error = error; 1910 fdfinish(fd, bp); 1911 } 1912 fdc->sc_errors++; 1913 } 1914 1915 int 1916 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1917 { 1918 struct fd_softc *fd; 1919 struct fdc_softc *fdc; 1920 struct fdformat_parms *form_parms; 1921 struct fdformat_cmd *form_cmd; 1922 struct ne7_fd_formb *fd_formb; 1923 int il[FD_MAX_NSEC + 1]; 1924 int unit; 1925 int i, j; 1926 int error; 1927 1928 unit = FDUNIT(dev); 1929 if (unit >= fd_cd.cd_ndevs) 1930 return (ENXIO); 1931 1932 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1933 fdc = device_private(device_parent(&fd->sc_dv)); 1934 1935 switch (cmd) { 1936 case DIOCGDINFO: 1937 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1938 return 0; 1939 1940 case DIOCWLABEL: 1941 if ((flag & FWRITE) == 0) 1942 return EBADF; 1943 /* XXX do something */ 1944 return (0); 1945 1946 case DIOCWDINFO: 1947 if ((flag & FWRITE) == 0) 1948 return (EBADF); 1949 1950 error = setdisklabel(fd->sc_dk.dk_label, 1951 (struct disklabel *)addr, 0, 1952 fd->sc_dk.dk_cpulabel); 1953 if (error) 1954 return (error); 1955 1956 error = writedisklabel(dev, fdstrategy, 1957 fd->sc_dk.dk_label, 1958 fd->sc_dk.dk_cpulabel); 1959 return (error); 1960 1961 case DIOCLOCK: 1962 /* 1963 * Nothing to do here, really. 1964 */ 1965 return (0); 1966 1967 case DIOCEJECT: 1968 if (*(int *)addr == 0) { 1969 int part = DISKPART(dev); 1970 /* 1971 * Don't force eject: check that we are the only 1972 * partition open. If so, unlock it. 1973 */ 1974 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1975 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1976 fd->sc_dk.dk_openmask) { 1977 return (EBUSY); 1978 } 1979 } 1980 /* FALLTHROUGH */ 1981 case ODIOCEJECT: 1982 fd_do_eject(fd); 1983 return (0); 1984 1985 case FDIOCGETFORMAT: 1986 form_parms = (struct fdformat_parms *)addr; 1987 form_parms->fdformat_version = FDFORMAT_VERSION; 1988 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1989 form_parms->ncyl = fd->sc_type->cylinders; 1990 form_parms->nspt = fd->sc_type->sectrac; 1991 form_parms->ntrk = fd->sc_type->heads; 1992 form_parms->stepspercyl = fd->sc_type->step; 1993 form_parms->gaplen = fd->sc_type->gap2; 1994 form_parms->fillbyte = fd->sc_type->fillbyte; 1995 form_parms->interleave = fd->sc_type->interleave; 1996 switch (fd->sc_type->rate) { 1997 case FDC_500KBPS: 1998 form_parms->xfer_rate = 500 * 1024; 1999 break; 2000 case FDC_300KBPS: 2001 form_parms->xfer_rate = 300 * 1024; 2002 break; 2003 case FDC_250KBPS: 2004 form_parms->xfer_rate = 250 * 1024; 2005 break; 2006 default: 2007 return (EINVAL); 2008 } 2009 return (0); 2010 2011 case FDIOCSETFORMAT: 2012 if ((flag & FWRITE) == 0) 2013 return (EBADF); /* must be opened for writing */ 2014 2015 form_parms = (struct fdformat_parms *)addr; 2016 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2017 return (EINVAL);/* wrong version of formatting prog */ 2018 2019 i = form_parms->nbps >> 7; 2020 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2021 i & ~(1 << (ffs(i)-1))) 2022 /* not a power-of-two multiple of 128 */ 2023 return (EINVAL); 2024 2025 switch (form_parms->xfer_rate) { 2026 case 500 * 1024: 2027 fd->sc_type->rate = FDC_500KBPS; 2028 break; 2029 case 300 * 1024: 2030 fd->sc_type->rate = FDC_300KBPS; 2031 break; 2032 case 250 * 1024: 2033 fd->sc_type->rate = FDC_250KBPS; 2034 break; 2035 default: 2036 return (EINVAL); 2037 } 2038 2039 if (form_parms->nspt > FD_MAX_NSEC || 2040 form_parms->fillbyte > 0xff || 2041 form_parms->interleave > 0xff) 2042 return EINVAL; 2043 fd->sc_type->sectrac = form_parms->nspt; 2044 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2045 return EINVAL; 2046 fd->sc_type->heads = form_parms->ntrk; 2047 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2048 fd->sc_type->secsize = ffs(i)-1; 2049 fd->sc_type->gap2 = form_parms->gaplen; 2050 fd->sc_type->cylinders = form_parms->ncyl; 2051 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2052 form_parms->nbps / DEV_BSIZE; 2053 fd->sc_type->step = form_parms->stepspercyl; 2054 fd->sc_type->fillbyte = form_parms->fillbyte; 2055 fd->sc_type->interleave = form_parms->interleave; 2056 return (0); 2057 2058 case FDIOCFORMAT_TRACK: 2059 if((flag & FWRITE) == 0) 2060 /* must be opened for writing */ 2061 return (EBADF); 2062 form_cmd = (struct fdformat_cmd *)addr; 2063 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2064 /* wrong version of formatting prog */ 2065 return (EINVAL); 2066 2067 if (form_cmd->head >= fd->sc_type->heads || 2068 form_cmd->cylinder >= fd->sc_type->cylinders) { 2069 return (EINVAL); 2070 } 2071 2072 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2073 M_TEMP, M_NOWAIT); 2074 if (fd_formb == 0) 2075 return (ENOMEM); 2076 2077 fd_formb->head = form_cmd->head; 2078 fd_formb->cyl = form_cmd->cylinder; 2079 fd_formb->transfer_rate = fd->sc_type->rate; 2080 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2081 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2082 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2083 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2084 2085 memset(il, 0, sizeof il); 2086 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2087 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2088 j++; 2089 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2090 j += fd->sc_type->interleave; 2091 } 2092 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2093 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2094 fd_formb->fd_formb_headno(i) = form_cmd->head; 2095 fd_formb->fd_formb_secno(i) = il[i+1]; 2096 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2097 } 2098 2099 error = fdformat(dev, fd_formb, l->l_proc); 2100 free(fd_formb, M_TEMP); 2101 return error; 2102 2103 case FDIOCGETOPTS: /* get drive options */ 2104 *(int *)addr = fd->sc_opts; 2105 return (0); 2106 2107 case FDIOCSETOPTS: /* set drive options */ 2108 fd->sc_opts = *(int *)addr; 2109 return (0); 2110 2111 #ifdef FD_DEBUG 2112 case _IO('f', 100): 2113 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2114 fdcresult(fdc); 2115 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2116 for (i = 0; i < fdc->sc_nstat; i++) 2117 printf(" 0x%x", fdc->sc_status[i]); 2118 printf(">\n"); 2119 return (0); 2120 2121 case _IOW('f', 101, int): 2122 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2123 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2124 fdconf(fdc); 2125 return (0); 2126 2127 case _IO('f', 102): 2128 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2129 fdcresult(fdc); 2130 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2131 for (i=0; i< fdc->sc_nstat; i++) 2132 printf(" 0x%x", fdc->sc_status[i]); 2133 printf(">\n"); 2134 return (0); 2135 #endif 2136 default: 2137 return (ENOTTY); 2138 } 2139 2140 #ifdef DIAGNOSTIC 2141 panic("fdioctl: impossible"); 2142 #endif 2143 } 2144 2145 int 2146 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2147 { 2148 int rv = 0; 2149 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2150 struct fd_type *type = fd->sc_type; 2151 struct buf *bp; 2152 2153 /* set up a buffer header for fdstrategy() */ 2154 bp = getiobuf(NULL, false); 2155 if (bp == NULL) 2156 return (ENOBUFS); 2157 2158 bp->b_vp = NULL; 2159 bp->b_cflags = BC_BUSY; 2160 bp->b_flags = B_PHYS | B_FORMAT; 2161 bp->b_proc = p; 2162 bp->b_dev = dev; 2163 2164 /* 2165 * Calculate a fake blkno, so fdstrategy() would initiate a 2166 * seek to the requested cylinder. 2167 */ 2168 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2169 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2170 / DEV_BSIZE; 2171 2172 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2173 bp->b_data = (void *)finfo; 2174 2175 #ifdef FD_DEBUG 2176 if (fdc_debug) { 2177 int i; 2178 2179 printf("fdformat: blkno 0x%llx count %d\n", 2180 (unsigned long long)bp->b_blkno, bp->b_bcount); 2181 2182 printf("\tcyl:\t%d\n", finfo->cyl); 2183 printf("\thead:\t%d\n", finfo->head); 2184 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2185 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2186 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2187 printf("\ttrack data:"); 2188 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2189 printf(" [c%d h%d s%d]", 2190 finfo->fd_formb_cylno(i), 2191 finfo->fd_formb_headno(i), 2192 finfo->fd_formb_secno(i) ); 2193 if (finfo->fd_formb_secsize(i) != 2) 2194 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2195 } 2196 printf("\n"); 2197 } 2198 #endif 2199 2200 /* now do the format */ 2201 fdstrategy(bp); 2202 2203 /* ...and wait for it to complete */ 2204 rv = biowait(bp); 2205 putiobuf(bp); 2206 return (rv); 2207 } 2208 2209 void 2210 fdgetdisklabel(dev_t dev) 2211 { 2212 int unit = FDUNIT(dev), i; 2213 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2214 struct disklabel *lp = fd->sc_dk.dk_label; 2215 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2216 2217 memset(lp, 0, sizeof(struct disklabel)); 2218 memset(lp, 0, sizeof(struct cpu_disklabel)); 2219 2220 lp->d_type = DTYPE_FLOPPY; 2221 lp->d_secsize = FD_BSIZE(fd); 2222 lp->d_secpercyl = fd->sc_type->seccyl; 2223 lp->d_nsectors = fd->sc_type->sectrac; 2224 lp->d_ncylinders = fd->sc_type->cylinders; 2225 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2226 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2227 lp->d_rpm = 3600; /* XXX like it matters... */ 2228 2229 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2230 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2231 lp->d_interleave = 1; 2232 2233 lp->d_partitions[RAW_PART].p_offset = 0; 2234 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2235 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2236 lp->d_npartitions = RAW_PART + 1; 2237 2238 lp->d_magic = DISKMAGIC; 2239 lp->d_magic2 = DISKMAGIC; 2240 lp->d_checksum = dkcksum(lp); 2241 2242 /* 2243 * Call the generic disklabel extraction routine. If there's 2244 * not a label there, fake it. 2245 */ 2246 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2247 strncpy(lp->d_packname, "default label", 2248 sizeof(lp->d_packname)); 2249 /* 2250 * Reset the partition info; it might have gotten 2251 * trashed in readdisklabel(). 2252 * 2253 * XXX Why do we have to do this? readdisklabel() 2254 * should be safe... 2255 */ 2256 for (i = 0; i < MAXPARTITIONS; ++i) { 2257 lp->d_partitions[i].p_offset = 0; 2258 if (i == RAW_PART) { 2259 lp->d_partitions[i].p_size = 2260 lp->d_secpercyl * lp->d_ncylinders; 2261 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2262 } else { 2263 lp->d_partitions[i].p_size = 0; 2264 lp->d_partitions[i].p_fstype = FS_UNUSED; 2265 } 2266 } 2267 lp->d_npartitions = RAW_PART + 1; 2268 } 2269 } 2270 2271 void 2272 fd_do_eject(struct fd_softc *fd) 2273 { 2274 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 2275 2276 if (CPU_ISSUN4C) { 2277 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2278 delay(10); 2279 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2280 return; 2281 } 2282 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2283 bus_space_tag_t t = fdc->sc_bustag; 2284 bus_space_handle_t h = fdc->sc_handle; 2285 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2286 2287 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2288 delay(10); 2289 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2290 return; 2291 } 2292 } 2293 2294 /* ARGSUSED */ 2295 void 2296 fd_mountroot_hook(struct device *dev) 2297 { 2298 int c; 2299 2300 fd_do_eject(device_private(dev)); 2301 printf("Insert filesystem floppy and press return."); 2302 for (;;) { 2303 c = cngetc(); 2304 if ((c == '\r') || (c == '\n')) { 2305 printf("\n"); 2306 break; 2307 } 2308 } 2309 } 2310 2311 #ifdef MEMORY_DISK_HOOKS 2312 2313 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2314 2315 int 2316 fd_read_md_image(size_t *sizep, void * *addrp) 2317 { 2318 struct buf buf, *bp = &buf; 2319 dev_t dev; 2320 off_t offset; 2321 void *addr; 2322 2323 dev = makedev(54,0); /* XXX */ 2324 2325 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2326 *addrp = addr; 2327 2328 if (fdopen(dev, 0, S_IFCHR, NULL)) 2329 panic("fd: mountroot: fdopen"); 2330 2331 offset = 0; 2332 2333 for (;;) { 2334 bp->b_dev = dev; 2335 bp->b_error = 0; 2336 bp->b_resid = 0; 2337 bp->b_proc = NULL; 2338 bp->b_cflags |= BC_BUSY; 2339 bp->b_flags = B_PHYS | B_RAW | B_READ; 2340 bp->b_blkno = btodb(offset); 2341 bp->b_bcount = DEV_BSIZE; 2342 bp->b_data = addr; 2343 fdstrategy(bp); 2344 biowait(bp); 2345 if (bp->b_error) 2346 panic("fd: mountroot: fdread error %d", bp->b_error); 2347 2348 if (bp->b_resid != 0) 2349 break; 2350 2351 addr = (char *)addr + DEV_BSIZE; 2352 offset += DEV_BSIZE; 2353 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2354 break; 2355 } 2356 (void)fdclose(dev, 0, S_IFCHR, NULL); 2357 *sizep = offset; 2358 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2359 return (0); 2360 } 2361 #endif /* MEMORY_DISK_HOOKS */ 2362