1 /* $NetBSD: fd.c,v 1.149 2010/02/24 22:37:55 dyoung 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 1.149 2010/02/24 22:37:55 dyoung 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, const pmf_qual_t *); 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, 643 #ifdef notyet /* XXX bsd_fdintr.s needs to be fixed for MI softint(9) */ 644 fdchwintr 645 #else 646 NULL 647 #endif 648 ) == NULL) { 649 printf("\n%s: cannot register interrupt handler\n", 650 fdc->sc_dev.dv_xname); 651 return (-1); 652 } 653 654 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 655 if (fdc->sc_sicookie == NULL) { 656 printf("\n%s: cannot register soft interrupt handler\n", 657 fdc->sc_dev.dv_xname); 658 return (-1); 659 } 660 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 661 662 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 663 fdc->sc_dev.dv_xname, "intr"); 664 665 /* physical limit: four drives per controller. */ 666 drive_attached = 0; 667 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 668 fa.fa_deftype = NULL; /* unknown */ 669 fa.fa_deftype = &fd_types[0]; /* XXX */ 670 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 671 drive_attached = 1; 672 } 673 674 if (drive_attached == 0) { 675 /* XXX - dis-establish interrupts here */ 676 /* return (-1); */ 677 } 678 679 return (0); 680 } 681 682 int 683 fdmatch(struct device *parent, struct cfdata *match, void *aux) 684 { 685 struct fdc_softc *fdc = device_private(parent); 686 bus_space_tag_t t = fdc->sc_bustag; 687 bus_space_handle_t h = fdc->sc_handle; 688 struct fdc_attach_args *fa = aux; 689 int drive = fa->fa_drive; 690 int n, ok; 691 692 if (drive > 0) 693 /* XXX - for now, punt on more than one drive */ 694 return (0); 695 696 if ((fdc->sc_flags & FDC_82077) != 0) { 697 /* select drive and turn on motor */ 698 bus_space_write_1(t, h, fdc->sc_reg_dor, 699 drive | FDO_FRST | FDO_MOEN(drive)); 700 /* wait for motor to spin up */ 701 delay(250000); 702 } else { 703 auxregbisc(AUXIO4C_FDS, 0); 704 } 705 fdc->sc_nstat = 0; 706 fdc_wrfifo(fdc, NE7CMD_RECAL); 707 fdc_wrfifo(fdc, drive); 708 709 /* Wait for recalibration to complete */ 710 for (n = 0; n < 10000; n++) { 711 uint8_t v; 712 713 delay(1000); 714 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 715 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 716 /* wait a bit longer till device *really* is ready */ 717 delay(100000); 718 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 719 break; 720 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 721 /* 722 * Got `invalid command'; we interpret it 723 * to mean that the re-calibrate hasn't in 724 * fact finished yet 725 */ 726 continue; 727 break; 728 } 729 } 730 n = fdc->sc_nstat; 731 #ifdef FD_DEBUG 732 if (fdc_debug) { 733 int i; 734 printf("fdprobe: %d stati:", n); 735 for (i = 0; i < n; i++) 736 printf(" 0x%x", fdc->sc_status[i]); 737 printf("\n"); 738 } 739 #endif 740 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 741 742 /* turn off motor */ 743 if ((fdc->sc_flags & FDC_82077) != 0) { 744 /* deselect drive and turn motor off */ 745 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 746 } else { 747 auxregbisc(0, AUXIO4C_FDS); 748 } 749 750 return (ok); 751 } 752 753 /* 754 * Controller is working, and drive responded. Attach it. 755 */ 756 void 757 fdattach(struct device *parent, struct device *self, void *aux) 758 { 759 struct fdc_softc *fdc = device_private(parent); 760 struct fd_softc *fd = device_private(self); 761 struct fdc_attach_args *fa = aux; 762 struct fd_type *type = fa->fa_deftype; 763 int drive = fa->fa_drive; 764 765 callout_init(&fd->sc_motoron_ch, 0); 766 callout_init(&fd->sc_motoroff_ch, 0); 767 768 /* XXX Allow `flags' to override device type? */ 769 770 if (type) 771 printf(": %s %d cyl, %d head, %d sec\n", type->name, 772 type->cylinders, type->heads, type->sectrac); 773 else 774 printf(": density unknown\n"); 775 776 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 777 fd->sc_cylin = -1; 778 fd->sc_drive = drive; 779 fd->sc_deftype = type; 780 fdc->sc_fd[drive] = fd; 781 782 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 783 fdc_wrfifo(fdc, type->steprate); 784 /* XXX head load time == 6ms */ 785 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 786 787 /* 788 * Initialize and attach the disk structure. 789 */ 790 disk_init(&fd->sc_dk, fd->sc_dv.dv_xname, &fddkdriver); 791 disk_attach(&fd->sc_dk); 792 793 /* 794 * Establish a mountroot_hook anyway in case we booted 795 * with RB_ASKNAME and get selected as the boot device. 796 */ 797 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 798 799 /* Make sure the drive motor gets turned off at shutdown time. */ 800 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 801 aprint_error_dev(self, "couldn't establish power handler\n"); 802 } 803 804 bool fdshutdown(device_t self, int how) 805 { 806 struct fd_softc *fd = device_private(self); 807 808 fd_motor_off(fd); 809 return true; 810 } 811 812 bool fdsuspend(device_t self, const pmf_qual_t *qual) 813 { 814 815 return fdshutdown(self, boothowto); 816 } 817 818 819 inline struct fd_type * 820 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 821 { 822 int type = FDTYPE(dev); 823 824 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 825 return (NULL); 826 return (type ? &fd_types[type - 1] : fd->sc_deftype); 827 } 828 829 void 830 fdstrategy(struct buf *bp) 831 { 832 struct fd_softc *fd; 833 int unit = FDUNIT(bp->b_dev); 834 int sz; 835 int s; 836 837 /* Valid unit, controller, and request? */ 838 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 839 bp->b_blkno < 0 || 840 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 841 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 842 (bp->b_flags & B_FORMAT) == 0)) { 843 bp->b_error = EINVAL; 844 goto done; 845 } 846 847 /* If it's a null transfer, return immediately. */ 848 if (bp->b_bcount == 0) 849 goto done; 850 851 sz = howmany(bp->b_bcount, DEV_BSIZE); 852 853 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 854 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 855 - bp->b_blkno; 856 if (sz == 0) { 857 /* If exactly at end of disk, return EOF. */ 858 bp->b_resid = bp->b_bcount; 859 goto done; 860 } 861 if (sz < 0) { 862 /* If past end of disk, return EINVAL. */ 863 bp->b_error = EINVAL; 864 goto done; 865 } 866 /* Otherwise, truncate request. */ 867 bp->b_bcount = sz << DEV_BSHIFT; 868 } 869 870 bp->b_rawblkno = bp->b_blkno; 871 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 872 (FD_BSIZE(fd) * fd->sc_type->seccyl); 873 874 #ifdef FD_DEBUG 875 if (fdc_debug > 1) 876 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 877 (long long)bp->b_blkno, bp->b_bcount, 878 (long long)fd->sc_blkno, bp->b_cylinder); 879 #endif 880 881 /* Queue transfer on drive, activate drive and controller if idle. */ 882 s = splbio(); 883 bufq_put(fd->sc_q, bp); 884 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 885 if (fd->sc_active == 0) 886 fdstart(fd); 887 #ifdef DIAGNOSTIC 888 else { 889 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 890 if (fdc->sc_state == DEVIDLE) { 891 printf("fdstrategy: controller inactive\n"); 892 fdcstart(fdc); 893 } 894 } 895 #endif 896 splx(s); 897 return; 898 899 done: 900 /* Toss transfer; we're done early. */ 901 biodone(bp); 902 } 903 904 void 905 fdstart(struct fd_softc *fd) 906 { 907 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 908 int active = fdc->sc_drives.tqh_first != 0; 909 910 /* Link into controller queue. */ 911 fd->sc_active = 1; 912 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 913 914 /* If controller not already active, start it. */ 915 if (!active) 916 fdcstart(fdc); 917 } 918 919 void 920 fdfinish(struct fd_softc *fd, struct buf *bp) 921 { 922 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 923 924 /* 925 * Move this drive to the end of the queue to give others a `fair' 926 * chance. We only force a switch if N operations are completed while 927 * another drive is waiting to be serviced, since there is a long motor 928 * startup delay whenever we switch. 929 */ 930 (void)bufq_get(fd->sc_q); 931 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 932 fd->sc_ops = 0; 933 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 934 if (bufq_peek(fd->sc_q) != NULL) { 935 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 936 } else 937 fd->sc_active = 0; 938 } 939 bp->b_resid = fd->sc_bcount; 940 fd->sc_skip = 0; 941 942 biodone(bp); 943 /* turn off motor 5s from now */ 944 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 945 fdc->sc_state = DEVIDLE; 946 } 947 948 void 949 fdc_reset(struct fdc_softc *fdc) 950 { 951 bus_space_tag_t t = fdc->sc_bustag; 952 bus_space_handle_t h = fdc->sc_handle; 953 954 if ((fdc->sc_flags & FDC_82077) != 0) { 955 bus_space_write_1(t, h, fdc->sc_reg_dor, 956 FDO_FDMAEN | FDO_MOEN(0)); 957 } 958 959 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 960 delay(10); 961 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 962 963 if ((fdc->sc_flags & FDC_82077) != 0) { 964 bus_space_write_1(t, h, fdc->sc_reg_dor, 965 FDO_FRST | FDO_FDMAEN | FDO_DS); 966 } 967 #ifdef FD_DEBUG 968 if (fdc_debug) 969 printf("fdc reset\n"); 970 #endif 971 } 972 973 void 974 fd_set_motor(struct fdc_softc *fdc) 975 { 976 struct fd_softc *fd; 977 u_char status; 978 int n; 979 980 if ((fdc->sc_flags & FDC_82077) != 0) { 981 status = FDO_FRST | FDO_FDMAEN; 982 if ((fd = fdc->sc_drives.tqh_first) != NULL) 983 status |= fd->sc_drive; 984 985 for (n = 0; n < 4; n++) 986 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 987 status |= FDO_MOEN(n); 988 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 989 fdc->sc_reg_dor, status); 990 } else { 991 992 for (n = 0; n < 4; n++) { 993 if ((fd = fdc->sc_fd[n]) != NULL && 994 (fd->sc_flags & FD_MOTOR) != 0) { 995 auxregbisc(AUXIO4C_FDS, 0); 996 return; 997 } 998 } 999 auxregbisc(0, AUXIO4C_FDS); 1000 } 1001 } 1002 1003 void 1004 fd_motor_off(void *arg) 1005 { 1006 struct fd_softc *fd = arg; 1007 int s; 1008 1009 s = splbio(); 1010 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1011 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1012 splx(s); 1013 } 1014 1015 void 1016 fd_motor_on(void *arg) 1017 { 1018 struct fd_softc *fd = arg; 1019 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 1020 int s; 1021 1022 s = splbio(); 1023 fd->sc_flags &= ~FD_MOTOR_WAIT; 1024 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1025 (void) fdcstate(fdc); 1026 splx(s); 1027 } 1028 1029 /* 1030 * Get status bytes off the FDC after a command has finished 1031 * Returns the number of status bytes read; -1 on error. 1032 * The return value is also stored in `sc_nstat'. 1033 */ 1034 int 1035 fdcresult(struct fdc_softc *fdc) 1036 { 1037 bus_space_tag_t t = fdc->sc_bustag; 1038 bus_space_handle_t h = fdc->sc_handle; 1039 int j, n = 0; 1040 1041 for (j = 10000; j; j--) { 1042 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1043 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1044 if (v == NE7_RQM) 1045 return (fdc->sc_nstat = n); 1046 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1047 if (n >= sizeof(fdc->sc_status)) { 1048 log(LOG_ERR, "fdcresult: overrun\n"); 1049 return (-1); 1050 } 1051 fdc->sc_status[n++] = 1052 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1053 } else 1054 delay(1); 1055 } 1056 1057 log(LOG_ERR, "fdcresult: timeout\n"); 1058 return (fdc->sc_nstat = -1); 1059 } 1060 1061 /* 1062 * Write a command byte to the FDC. 1063 * Returns 0 on success; -1 on failure (i.e. timeout) 1064 */ 1065 int 1066 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1067 { 1068 bus_space_tag_t t = fdc->sc_bustag; 1069 bus_space_handle_t h = fdc->sc_handle; 1070 int i; 1071 1072 for (i = 100000; i-- > 0;) { 1073 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1074 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1075 /* The chip is ready */ 1076 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1077 return (0); 1078 } 1079 delay(1); 1080 } 1081 return (-1); 1082 } 1083 1084 int 1085 fdc_diskchange(struct fdc_softc *fdc) 1086 { 1087 1088 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1089 bus_space_tag_t t = fdc->sc_bustag; 1090 bus_space_handle_t h = fdc->sc_handle; 1091 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1092 return ((v & FDI_DCHG) != 0); 1093 } else if (CPU_ISSUN4C) { 1094 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1095 } 1096 return (0); 1097 } 1098 1099 int 1100 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1101 { 1102 int unit, pmask; 1103 struct fd_softc *fd; 1104 struct fd_type *type; 1105 1106 unit = FDUNIT(dev); 1107 fd = device_lookup_private(&fd_cd, unit); 1108 if (fd == NULL) 1109 return (ENXIO); 1110 type = fd_dev_to_type(fd, dev); 1111 if (type == NULL) 1112 return (ENXIO); 1113 1114 if ((fd->sc_flags & FD_OPEN) != 0 && 1115 fd->sc_type != type) 1116 return (EBUSY); 1117 1118 fd->sc_type = type; 1119 fd->sc_cylin = -1; 1120 fd->sc_flags |= FD_OPEN; 1121 1122 /* 1123 * Only update the disklabel if we're not open anywhere else. 1124 */ 1125 if (fd->sc_dk.dk_openmask == 0) 1126 fdgetdisklabel(dev); 1127 1128 pmask = (1 << DISKPART(dev)); 1129 1130 switch (fmt) { 1131 case S_IFCHR: 1132 fd->sc_dk.dk_copenmask |= pmask; 1133 break; 1134 1135 case S_IFBLK: 1136 fd->sc_dk.dk_bopenmask |= pmask; 1137 break; 1138 } 1139 fd->sc_dk.dk_openmask = 1140 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1141 1142 return (0); 1143 } 1144 1145 int 1146 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1147 { 1148 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1149 int pmask = (1 << DISKPART(dev)); 1150 1151 fd->sc_flags &= ~FD_OPEN; 1152 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1153 1154 switch (fmt) { 1155 case S_IFCHR: 1156 fd->sc_dk.dk_copenmask &= ~pmask; 1157 break; 1158 1159 case S_IFBLK: 1160 fd->sc_dk.dk_bopenmask &= ~pmask; 1161 break; 1162 } 1163 fd->sc_dk.dk_openmask = 1164 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1165 1166 return (0); 1167 } 1168 1169 int 1170 fdread(dev_t dev, struct uio *uio, int flag) 1171 { 1172 1173 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1174 } 1175 1176 int 1177 fdwrite(dev_t dev, struct uio *uio, int flag) 1178 { 1179 1180 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1181 } 1182 1183 void 1184 fdcstart(struct fdc_softc *fdc) 1185 { 1186 1187 #ifdef DIAGNOSTIC 1188 /* only got here if controller's drive queue was inactive; should 1189 be in idle state */ 1190 if (fdc->sc_state != DEVIDLE) { 1191 printf("fdcstart: not idle\n"); 1192 return; 1193 } 1194 #endif 1195 (void) fdcstate(fdc); 1196 } 1197 1198 static void 1199 fdcpstatus(int n, struct fdc_softc *fdc) 1200 { 1201 char bits[64]; 1202 1203 switch (n) { 1204 case 0: 1205 printf("\n"); 1206 break; 1207 case 2: 1208 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1209 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1210 break; 1211 case 7: 1212 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1213 printf(" (st0 %s", bits); 1214 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1215 printf(" st1 %s", bits); 1216 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1217 printf(" st2 %s", bits); 1218 printf(" cyl %d head %d sec %d)\n", 1219 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1220 break; 1221 #ifdef DIAGNOSTIC 1222 default: 1223 printf("\nfdcstatus: weird size"); 1224 break; 1225 #endif 1226 } 1227 } 1228 1229 void 1230 fdcstatus(struct fdc_softc *fdc, const char *s) 1231 { 1232 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1233 int n; 1234 1235 /* Just print last status */ 1236 n = fdc->sc_nstat; 1237 1238 #if 0 1239 /* 1240 * A 82072 seems to return <invalid command> on 1241 * gratuitous Sense Interrupt commands. 1242 */ 1243 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1244 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1245 (void) fdcresult(fdc); 1246 n = 2; 1247 } 1248 #endif 1249 1250 printf("%s: %s: state %d", 1251 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1252 1253 fdcpstatus(n, fdc); 1254 } 1255 1256 void 1257 fdctimeout(void *arg) 1258 { 1259 struct fdc_softc *fdc = arg; 1260 struct fd_softc *fd; 1261 int s; 1262 1263 s = splbio(); 1264 fd = fdc->sc_drives.tqh_first; 1265 if (fd == NULL) { 1266 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1267 fdc->sc_dev.dv_xname, 1268 fdc->sc_state, fdc->sc_istatus); 1269 fdc->sc_state = DEVIDLE; 1270 goto out; 1271 } 1272 1273 if (bufq_peek(fd->sc_q) != NULL) 1274 fdc->sc_state++; 1275 else 1276 fdc->sc_state = DEVIDLE; 1277 1278 (void) fdcstate(fdc); 1279 out: 1280 splx(s); 1281 1282 } 1283 1284 void 1285 fdcpseudointr(void *arg) 1286 { 1287 struct fdc_softc *fdc = arg; 1288 int s; 1289 1290 /* Just ensure it has the right spl. */ 1291 s = splbio(); 1292 (void) fdcstate(fdc); 1293 splx(s); 1294 } 1295 1296 1297 /* 1298 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1299 * handler is available. Unfortunately, we have no reliable way to 1300 * determine that the interrupt really came from the floppy controller; 1301 * just hope that the other devices that share this interrupt level 1302 * can do better.. 1303 */ 1304 int 1305 fdc_c_hwintr(void *arg) 1306 { 1307 struct fdc_softc *fdc = arg; 1308 bus_space_tag_t t = fdc->sc_bustag; 1309 bus_space_handle_t h = fdc->sc_handle; 1310 1311 switch (fdc->sc_itask) { 1312 case FDC_ITASK_NONE: 1313 return (0); 1314 case FDC_ITASK_SENSEI: 1315 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1316 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1317 else 1318 fdc->sc_istatus = FDC_ISTATUS_DONE; 1319 softint_schedule(fdc->sc_sicookie); 1320 return (1); 1321 case FDC_ITASK_RESULT: 1322 if (fdcresult(fdc) == -1) 1323 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1324 else 1325 fdc->sc_istatus = FDC_ISTATUS_DONE; 1326 softint_schedule(fdc->sc_sicookie); 1327 return (1); 1328 case FDC_ITASK_DMA: 1329 /* Proceed with pseudo-DMA below */ 1330 break; 1331 default: 1332 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1333 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1334 softint_schedule(fdc->sc_sicookie); 1335 return (1); 1336 } 1337 1338 /* 1339 * Pseudo DMA in progress 1340 */ 1341 for (;;) { 1342 uint8_t msr; 1343 1344 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1345 1346 if ((msr & NE7_RQM) == 0) 1347 /* That's all this round */ 1348 break; 1349 1350 if ((msr & NE7_NDM) == 0) { 1351 /* Execution phase finished, get result. */ 1352 fdcresult(fdc); 1353 fdc->sc_istatus = FDC_ISTATUS_DONE; 1354 softint_schedule(fdc->sc_sicookie); 1355 break; 1356 } 1357 1358 if (fdc->sc_tc == 0) 1359 /* For some reason the controller wants to transfer 1360 more data then what we want to transfer. */ 1361 panic("fdc: overrun"); 1362 1363 /* Another byte can be transferred */ 1364 if ((msr & NE7_DIO) != 0) 1365 *fdc->sc_data = 1366 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1367 else 1368 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1369 *fdc->sc_data); 1370 1371 fdc->sc_data++; 1372 if (--fdc->sc_tc == 0) { 1373 FTC_FLIP; 1374 break; 1375 } 1376 } 1377 return (1); 1378 } 1379 1380 void 1381 fdcswintr(void *arg) 1382 { 1383 struct fdc_softc *fdc = arg; 1384 1385 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1386 /* This (software) interrupt is not for us */ 1387 return; 1388 1389 switch (fdc->sc_istatus) { 1390 case FDC_ISTATUS_ERROR: 1391 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1392 break; 1393 case FDC_ISTATUS_SPURIOUS: 1394 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1395 break; 1396 } 1397 1398 fdcstate(fdc); 1399 return; 1400 } 1401 1402 int 1403 fdcstate(struct fdc_softc *fdc) 1404 { 1405 1406 #define st0 fdc->sc_status[0] 1407 #define st1 fdc->sc_status[1] 1408 #define cyl fdc->sc_status[1] 1409 #define FDC_WRFIFO(fdc, c) do { \ 1410 if (fdc_wrfifo(fdc, (c))) { \ 1411 goto xxx; \ 1412 } \ 1413 } while(0) 1414 1415 struct fd_softc *fd; 1416 struct buf *bp; 1417 int read, head, sec, nblks; 1418 struct fd_type *type; 1419 struct ne7_fd_formb *finfo = NULL; 1420 1421 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1422 /* Prevent loop if the reset sequence produces errors */ 1423 if (fdc->sc_state != RESETCOMPLETE && 1424 fdc->sc_state != RECALWAIT && 1425 fdc->sc_state != RECALCOMPLETE) 1426 fdc->sc_state = DORESET; 1427 } 1428 1429 /* Clear I task/status field */ 1430 fdc->sc_istatus = FDC_ISTATUS_NONE; 1431 fdc->sc_itask = FDC_ITASK_NONE; 1432 1433 loop: 1434 /* Is there a drive for the controller to do a transfer with? */ 1435 fd = fdc->sc_drives.tqh_first; 1436 if (fd == NULL) { 1437 fdc->sc_state = DEVIDLE; 1438 return (0); 1439 } 1440 1441 /* Is there a transfer to this drive? If not, deactivate drive. */ 1442 bp = bufq_peek(fd->sc_q); 1443 if (bp == NULL) { 1444 fd->sc_ops = 0; 1445 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1446 fd->sc_active = 0; 1447 goto loop; 1448 } 1449 1450 if (bp->b_flags & B_FORMAT) 1451 finfo = (struct ne7_fd_formb *)bp->b_data; 1452 1453 switch (fdc->sc_state) { 1454 case DEVIDLE: 1455 fdc->sc_errors = 0; 1456 fd->sc_skip = 0; 1457 fd->sc_bcount = bp->b_bcount; 1458 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1459 callout_stop(&fd->sc_motoroff_ch); 1460 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1461 fdc->sc_state = MOTORWAIT; 1462 return (1); 1463 } 1464 if ((fd->sc_flags & FD_MOTOR) == 0) { 1465 /* Turn on the motor, being careful about pairing. */ 1466 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1467 if (ofd && ofd->sc_flags & FD_MOTOR) { 1468 callout_stop(&ofd->sc_motoroff_ch); 1469 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1470 } 1471 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1472 fd_set_motor(fdc); 1473 fdc->sc_state = MOTORWAIT; 1474 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1475 /* Allow .25s for motor to stabilize. */ 1476 callout_reset(&fd->sc_motoron_ch, hz / 4, 1477 fd_motor_on, fd); 1478 } else { 1479 fd->sc_flags &= ~FD_MOTOR_WAIT; 1480 goto loop; 1481 } 1482 return (1); 1483 } 1484 /* Make sure the right drive is selected. */ 1485 fd_set_motor(fdc); 1486 1487 if (fdc_diskchange(fdc)) 1488 goto dodskchg; 1489 1490 /*FALLTHROUGH*/ 1491 case DOSEEK: 1492 doseek: 1493 if ((fdc->sc_flags & FDC_EIS) && 1494 (bp->b_flags & B_FORMAT) == 0) { 1495 fd->sc_cylin = bp->b_cylinder; 1496 /* We use implied seek */ 1497 goto doio; 1498 } 1499 1500 if (fd->sc_cylin == bp->b_cylinder) 1501 goto doio; 1502 1503 fd->sc_cylin = -1; 1504 fdc->sc_state = SEEKWAIT; 1505 fdc->sc_nstat = 0; 1506 1507 iostat_seek(fd->sc_dk.dk_stats); 1508 1509 disk_busy(&fd->sc_dk); 1510 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1511 1512 /* specify command */ 1513 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1514 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1515 /* XXX head load time == 6ms */ 1516 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1517 1518 fdc->sc_itask = FDC_ITASK_SENSEI; 1519 /* seek function */ 1520 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1521 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1522 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1523 return (1); 1524 1525 case DODSKCHG: 1526 dodskchg: 1527 /* 1528 * Disk change: force a seek operation by going to cyl 1 1529 * followed by a recalibrate. 1530 */ 1531 disk_busy(&fd->sc_dk); 1532 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1533 fd->sc_cylin = -1; 1534 fdc->sc_nstat = 0; 1535 fdc->sc_state = DSKCHGWAIT; 1536 1537 fdc->sc_itask = FDC_ITASK_SENSEI; 1538 /* seek function */ 1539 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1540 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1541 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1542 return (1); 1543 1544 case DSKCHGWAIT: 1545 callout_stop(&fdc->sc_timo_ch); 1546 disk_unbusy(&fd->sc_dk, 0, 0); 1547 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1548 cyl != 1 * fd->sc_type->step) { 1549 fdcstatus(fdc, "dskchg seek failed"); 1550 fdc->sc_state = DORESET; 1551 } else 1552 fdc->sc_state = DORECAL; 1553 1554 if (fdc_diskchange(fdc)) { 1555 printf("%s: cannot clear disk change status\n", 1556 fdc->sc_dev.dv_xname); 1557 fdc->sc_state = DORESET; 1558 } 1559 goto loop; 1560 1561 case DOIO: 1562 doio: 1563 if (finfo != NULL) 1564 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1565 (char *)finfo; 1566 type = fd->sc_type; 1567 sec = fd->sc_blkno % type->seccyl; 1568 nblks = type->seccyl - sec; 1569 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1570 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1571 fd->sc_nblks = nblks; 1572 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1573 head = sec / type->sectrac; 1574 sec -= head * type->sectrac; 1575 #ifdef DIAGNOSTIC 1576 {int block; 1577 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1578 if (block != fd->sc_blkno) { 1579 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1580 #ifdef DDB 1581 Debugger(); 1582 #endif 1583 }} 1584 #endif 1585 read = bp->b_flags & B_READ; 1586 1587 /* Setup for pseudo DMA */ 1588 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1589 fdc->sc_tc = fd->sc_nbytes; 1590 1591 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1592 fdc->sc_reg_drs, type->rate); 1593 #ifdef FD_DEBUG 1594 if (fdc_debug > 1) 1595 printf("fdcstate: doio: %s drive %d " 1596 "track %d head %d sec %d nblks %d\n", 1597 finfo ? "format" : 1598 (read ? "read" : "write"), 1599 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1600 #endif 1601 fdc->sc_state = IOCOMPLETE; 1602 fdc->sc_itask = FDC_ITASK_DMA; 1603 fdc->sc_nstat = 0; 1604 1605 disk_busy(&fd->sc_dk); 1606 1607 /* allow 3 seconds for operation */ 1608 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1609 1610 if (finfo != NULL) { 1611 /* formatting */ 1612 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1613 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1614 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1615 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1616 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1617 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1618 } else { 1619 if (read) 1620 FDC_WRFIFO(fdc, NE7CMD_READ); 1621 else 1622 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1623 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1624 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1625 FDC_WRFIFO(fdc, head); 1626 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1627 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1628 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1629 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1630 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1631 } 1632 1633 return (1); /* will return later */ 1634 1635 case SEEKWAIT: 1636 callout_stop(&fdc->sc_timo_ch); 1637 fdc->sc_state = SEEKCOMPLETE; 1638 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1639 /* allow 1/50 second for heads to settle */ 1640 callout_reset(&fdc->sc_intr_ch, hz / 50, 1641 fdcpseudointr, fdc); 1642 return (1); /* will return later */ 1643 } 1644 /*FALLTHROUGH*/ 1645 case SEEKCOMPLETE: 1646 /* no data on seek */ 1647 disk_unbusy(&fd->sc_dk, 0, 0); 1648 1649 /* Make sure seek really happened. */ 1650 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1651 cyl != bp->b_cylinder * fd->sc_type->step) { 1652 #ifdef FD_DEBUG 1653 if (fdc_debug) 1654 fdcstatus(fdc, "seek failed"); 1655 #endif 1656 fdcretry(fdc); 1657 goto loop; 1658 } 1659 fd->sc_cylin = bp->b_cylinder; 1660 goto doio; 1661 1662 case IOTIMEDOUT: 1663 /* 1664 * Try to abort the I/O operation without resetting 1665 * the chip first. Poke TC and arrange to pick up 1666 * the timed out I/O command's status. 1667 */ 1668 fdc->sc_itask = FDC_ITASK_RESULT; 1669 fdc->sc_state = IOCLEANUPWAIT; 1670 fdc->sc_nstat = 0; 1671 /* 1/10 second should be enough */ 1672 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1673 FTC_FLIP; 1674 return (1); 1675 1676 case IOCLEANUPTIMEDOUT: 1677 case SEEKTIMEDOUT: 1678 case RECALTIMEDOUT: 1679 case RESETTIMEDOUT: 1680 case DSKCHGTIMEDOUT: 1681 fdcstatus(fdc, "timeout"); 1682 1683 /* All other timeouts always roll through to a chip reset */ 1684 fdcretry(fdc); 1685 1686 /* Force reset, no matter what fdcretry() says */ 1687 fdc->sc_state = DORESET; 1688 goto loop; 1689 1690 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1691 callout_stop(&fdc->sc_timo_ch); 1692 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1693 (bp->b_flags & B_READ)); 1694 fdcretry(fdc); 1695 goto loop; 1696 1697 case IOCOMPLETE: /* IO DONE, post-analyze */ 1698 callout_stop(&fdc->sc_timo_ch); 1699 1700 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1701 (bp->b_flags & B_READ)); 1702 1703 if (fdc->sc_nstat != 7 || st1 != 0 || 1704 ((st0 & 0xf8) != 0 && 1705 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1706 #ifdef FD_DEBUG 1707 if (fdc_debug) { 1708 fdcstatus(fdc, 1709 bp->b_flags & B_READ 1710 ? "read failed" : "write failed"); 1711 printf("blkno %lld nblks %d nstat %d tc %d\n", 1712 (long long)fd->sc_blkno, fd->sc_nblks, 1713 fdc->sc_nstat, fdc->sc_tc); 1714 } 1715 #endif 1716 if (fdc->sc_nstat == 7 && 1717 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1718 1719 /* 1720 * Silently retry overruns if no other 1721 * error bit is set. Adjust threshold. 1722 */ 1723 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1724 if (thr < 15) { 1725 thr++; 1726 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1727 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1728 #ifdef FD_DEBUG 1729 if (fdc_debug) 1730 printf("fdc: %d -> threshold\n", thr); 1731 #endif 1732 fdconf(fdc); 1733 fdc->sc_overruns = 0; 1734 } 1735 if (++fdc->sc_overruns < 3) { 1736 fdc->sc_state = DOIO; 1737 goto loop; 1738 } 1739 } 1740 fdcretry(fdc); 1741 goto loop; 1742 } 1743 if (fdc->sc_errors) { 1744 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1745 fd->sc_skip / FD_BSIZE(fd), 1746 (struct disklabel *)NULL); 1747 printf("\n"); 1748 fdc->sc_errors = 0; 1749 } else { 1750 if (--fdc->sc_overruns < -20) { 1751 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1752 if (thr > 0) { 1753 thr--; 1754 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1755 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1756 #ifdef FD_DEBUG 1757 if (fdc_debug) 1758 printf("fdc: %d -> threshold\n", thr); 1759 #endif 1760 fdconf(fdc); 1761 } 1762 fdc->sc_overruns = 0; 1763 } 1764 } 1765 fd->sc_blkno += fd->sc_nblks; 1766 fd->sc_skip += fd->sc_nbytes; 1767 fd->sc_bcount -= fd->sc_nbytes; 1768 if (finfo == NULL && fd->sc_bcount > 0) { 1769 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1770 goto doseek; 1771 } 1772 fdfinish(fd, bp); 1773 goto loop; 1774 1775 case DORESET: 1776 /* try a reset, keep motor on */ 1777 fd_set_motor(fdc); 1778 delay(100); 1779 fdc->sc_nstat = 0; 1780 fdc->sc_itask = FDC_ITASK_SENSEI; 1781 fdc->sc_state = RESETCOMPLETE; 1782 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1783 fdc_reset(fdc); 1784 return (1); /* will return later */ 1785 1786 case RESETCOMPLETE: 1787 callout_stop(&fdc->sc_timo_ch); 1788 fdconf(fdc); 1789 1790 /* FALLTHROUGH */ 1791 case DORECAL: 1792 fdc->sc_state = RECALWAIT; 1793 fdc->sc_itask = FDC_ITASK_SENSEI; 1794 fdc->sc_nstat = 0; 1795 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1796 /* recalibrate function */ 1797 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1798 FDC_WRFIFO(fdc, fd->sc_drive); 1799 return (1); /* will return later */ 1800 1801 case RECALWAIT: 1802 callout_stop(&fdc->sc_timo_ch); 1803 fdc->sc_state = RECALCOMPLETE; 1804 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1805 /* allow 1/30 second for heads to settle */ 1806 callout_reset(&fdc->sc_intr_ch, hz / 30, 1807 fdcpseudointr, fdc); 1808 return (1); /* will return later */ 1809 } 1810 1811 case RECALCOMPLETE: 1812 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1813 #ifdef FD_DEBUG 1814 if (fdc_debug) 1815 fdcstatus(fdc, "recalibrate failed"); 1816 #endif 1817 fdcretry(fdc); 1818 goto loop; 1819 } 1820 fd->sc_cylin = 0; 1821 goto doseek; 1822 1823 case MOTORWAIT: 1824 if (fd->sc_flags & FD_MOTOR_WAIT) 1825 return (1); /* time's not up yet */ 1826 goto doseek; 1827 1828 default: 1829 fdcstatus(fdc, "stray interrupt"); 1830 return (1); 1831 } 1832 #ifdef DIAGNOSTIC 1833 panic("fdcintr: impossible"); 1834 #endif 1835 1836 xxx: 1837 /* 1838 * We get here if the chip locks up in FDC_WRFIFO() 1839 * Cancel any operation and schedule a reset 1840 */ 1841 callout_stop(&fdc->sc_timo_ch); 1842 fdcretry(fdc); 1843 (fdc)->sc_state = DORESET; 1844 goto loop; 1845 1846 #undef st0 1847 #undef st1 1848 #undef cyl 1849 } 1850 1851 void 1852 fdcretry(struct fdc_softc *fdc) 1853 { 1854 struct fd_softc *fd; 1855 struct buf *bp; 1856 int error = EIO; 1857 1858 fd = fdc->sc_drives.tqh_first; 1859 bp = bufq_peek(fd->sc_q); 1860 1861 fdc->sc_overruns = 0; 1862 if (fd->sc_opts & FDOPT_NORETRY) 1863 goto fail; 1864 1865 switch (fdc->sc_errors) { 1866 case 0: 1867 if (fdc->sc_nstat == 7 && 1868 (fdc->sc_status[0] & 0xd8) == 0x40 && 1869 (fdc->sc_status[1] & 0x2) == 0x2) { 1870 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1871 error = EROFS; 1872 goto failsilent; 1873 } 1874 /* try again */ 1875 fdc->sc_state = 1876 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1877 break; 1878 1879 case 1: case 2: case 3: 1880 /* didn't work; try recalibrating */ 1881 fdc->sc_state = DORECAL; 1882 break; 1883 1884 case 4: 1885 if (fdc->sc_nstat == 7 && 1886 fdc->sc_status[0] == 0 && 1887 fdc->sc_status[1] == 0 && 1888 fdc->sc_status[2] == 0) { 1889 /* 1890 * We've retried a few times and we've got 1891 * valid status and all three status bytes 1892 * are zero. Assume this condition is the 1893 * result of no disk loaded into the drive. 1894 */ 1895 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1896 error = ENODEV; 1897 goto failsilent; 1898 } 1899 1900 /* still no go; reset the bastard */ 1901 fdc->sc_state = DORESET; 1902 break; 1903 1904 default: 1905 fail: 1906 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1907 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1908 fd->sc_skip / FD_BSIZE(fd), 1909 (struct disklabel *)NULL); 1910 printf("\n"); 1911 fdcstatus(fdc, "controller status"); 1912 } 1913 1914 failsilent: 1915 bp->b_error = error; 1916 fdfinish(fd, bp); 1917 } 1918 fdc->sc_errors++; 1919 } 1920 1921 int 1922 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1923 { 1924 struct fd_softc *fd; 1925 struct fdc_softc *fdc; 1926 struct fdformat_parms *form_parms; 1927 struct fdformat_cmd *form_cmd; 1928 struct ne7_fd_formb *fd_formb; 1929 int il[FD_MAX_NSEC + 1]; 1930 int unit; 1931 int i, j; 1932 int error; 1933 1934 unit = FDUNIT(dev); 1935 if (unit >= fd_cd.cd_ndevs) 1936 return (ENXIO); 1937 1938 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1939 fdc = device_private(device_parent(&fd->sc_dv)); 1940 1941 switch (cmd) { 1942 case DIOCGDINFO: 1943 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1944 return 0; 1945 1946 case DIOCWLABEL: 1947 if ((flag & FWRITE) == 0) 1948 return EBADF; 1949 /* XXX do something */ 1950 return (0); 1951 1952 case DIOCWDINFO: 1953 if ((flag & FWRITE) == 0) 1954 return (EBADF); 1955 1956 error = setdisklabel(fd->sc_dk.dk_label, 1957 (struct disklabel *)addr, 0, 1958 fd->sc_dk.dk_cpulabel); 1959 if (error) 1960 return (error); 1961 1962 error = writedisklabel(dev, fdstrategy, 1963 fd->sc_dk.dk_label, 1964 fd->sc_dk.dk_cpulabel); 1965 return (error); 1966 1967 case DIOCLOCK: 1968 /* 1969 * Nothing to do here, really. 1970 */ 1971 return (0); 1972 1973 case DIOCEJECT: 1974 if (*(int *)addr == 0) { 1975 int part = DISKPART(dev); 1976 /* 1977 * Don't force eject: check that we are the only 1978 * partition open. If so, unlock it. 1979 */ 1980 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1981 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1982 fd->sc_dk.dk_openmask) { 1983 return (EBUSY); 1984 } 1985 } 1986 /* FALLTHROUGH */ 1987 case ODIOCEJECT: 1988 fd_do_eject(fd); 1989 return (0); 1990 1991 case FDIOCGETFORMAT: 1992 form_parms = (struct fdformat_parms *)addr; 1993 form_parms->fdformat_version = FDFORMAT_VERSION; 1994 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1995 form_parms->ncyl = fd->sc_type->cylinders; 1996 form_parms->nspt = fd->sc_type->sectrac; 1997 form_parms->ntrk = fd->sc_type->heads; 1998 form_parms->stepspercyl = fd->sc_type->step; 1999 form_parms->gaplen = fd->sc_type->gap2; 2000 form_parms->fillbyte = fd->sc_type->fillbyte; 2001 form_parms->interleave = fd->sc_type->interleave; 2002 switch (fd->sc_type->rate) { 2003 case FDC_500KBPS: 2004 form_parms->xfer_rate = 500 * 1024; 2005 break; 2006 case FDC_300KBPS: 2007 form_parms->xfer_rate = 300 * 1024; 2008 break; 2009 case FDC_250KBPS: 2010 form_parms->xfer_rate = 250 * 1024; 2011 break; 2012 default: 2013 return (EINVAL); 2014 } 2015 return (0); 2016 2017 case FDIOCSETFORMAT: 2018 if ((flag & FWRITE) == 0) 2019 return (EBADF); /* must be opened for writing */ 2020 2021 form_parms = (struct fdformat_parms *)addr; 2022 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2023 return (EINVAL);/* wrong version of formatting prog */ 2024 2025 i = form_parms->nbps >> 7; 2026 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2027 i & ~(1 << (ffs(i)-1))) 2028 /* not a power-of-two multiple of 128 */ 2029 return (EINVAL); 2030 2031 switch (form_parms->xfer_rate) { 2032 case 500 * 1024: 2033 fd->sc_type->rate = FDC_500KBPS; 2034 break; 2035 case 300 * 1024: 2036 fd->sc_type->rate = FDC_300KBPS; 2037 break; 2038 case 250 * 1024: 2039 fd->sc_type->rate = FDC_250KBPS; 2040 break; 2041 default: 2042 return (EINVAL); 2043 } 2044 2045 if (form_parms->nspt > FD_MAX_NSEC || 2046 form_parms->fillbyte > 0xff || 2047 form_parms->interleave > 0xff) 2048 return EINVAL; 2049 fd->sc_type->sectrac = form_parms->nspt; 2050 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2051 return EINVAL; 2052 fd->sc_type->heads = form_parms->ntrk; 2053 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2054 fd->sc_type->secsize = ffs(i)-1; 2055 fd->sc_type->gap2 = form_parms->gaplen; 2056 fd->sc_type->cylinders = form_parms->ncyl; 2057 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2058 form_parms->nbps / DEV_BSIZE; 2059 fd->sc_type->step = form_parms->stepspercyl; 2060 fd->sc_type->fillbyte = form_parms->fillbyte; 2061 fd->sc_type->interleave = form_parms->interleave; 2062 return (0); 2063 2064 case FDIOCFORMAT_TRACK: 2065 if((flag & FWRITE) == 0) 2066 /* must be opened for writing */ 2067 return (EBADF); 2068 form_cmd = (struct fdformat_cmd *)addr; 2069 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2070 /* wrong version of formatting prog */ 2071 return (EINVAL); 2072 2073 if (form_cmd->head >= fd->sc_type->heads || 2074 form_cmd->cylinder >= fd->sc_type->cylinders) { 2075 return (EINVAL); 2076 } 2077 2078 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2079 M_TEMP, M_NOWAIT); 2080 if (fd_formb == 0) 2081 return (ENOMEM); 2082 2083 fd_formb->head = form_cmd->head; 2084 fd_formb->cyl = form_cmd->cylinder; 2085 fd_formb->transfer_rate = fd->sc_type->rate; 2086 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2087 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2088 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2089 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2090 2091 memset(il, 0, sizeof il); 2092 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2093 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2094 j++; 2095 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2096 j += fd->sc_type->interleave; 2097 } 2098 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2099 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2100 fd_formb->fd_formb_headno(i) = form_cmd->head; 2101 fd_formb->fd_formb_secno(i) = il[i+1]; 2102 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2103 } 2104 2105 error = fdformat(dev, fd_formb, l->l_proc); 2106 free(fd_formb, M_TEMP); 2107 return error; 2108 2109 case FDIOCGETOPTS: /* get drive options */ 2110 *(int *)addr = fd->sc_opts; 2111 return (0); 2112 2113 case FDIOCSETOPTS: /* set drive options */ 2114 fd->sc_opts = *(int *)addr; 2115 return (0); 2116 2117 #ifdef FD_DEBUG 2118 case _IO('f', 100): 2119 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2120 fdcresult(fdc); 2121 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2122 for (i = 0; i < fdc->sc_nstat; i++) 2123 printf(" 0x%x", fdc->sc_status[i]); 2124 printf(">\n"); 2125 return (0); 2126 2127 case _IOW('f', 101, int): 2128 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2129 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2130 fdconf(fdc); 2131 return (0); 2132 2133 case _IO('f', 102): 2134 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2135 fdcresult(fdc); 2136 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2137 for (i=0; i< fdc->sc_nstat; i++) 2138 printf(" 0x%x", fdc->sc_status[i]); 2139 printf(">\n"); 2140 return (0); 2141 #endif 2142 default: 2143 return (ENOTTY); 2144 } 2145 2146 #ifdef DIAGNOSTIC 2147 panic("fdioctl: impossible"); 2148 #endif 2149 } 2150 2151 int 2152 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2153 { 2154 int rv = 0; 2155 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2156 struct fd_type *type = fd->sc_type; 2157 struct buf *bp; 2158 2159 /* set up a buffer header for fdstrategy() */ 2160 bp = getiobuf(NULL, false); 2161 if (bp == NULL) 2162 return (ENOBUFS); 2163 2164 bp->b_vp = NULL; 2165 bp->b_cflags = BC_BUSY; 2166 bp->b_flags = B_PHYS | B_FORMAT; 2167 bp->b_proc = p; 2168 bp->b_dev = dev; 2169 2170 /* 2171 * Calculate a fake blkno, so fdstrategy() would initiate a 2172 * seek to the requested cylinder. 2173 */ 2174 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2175 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2176 / DEV_BSIZE; 2177 2178 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2179 bp->b_data = (void *)finfo; 2180 2181 #ifdef FD_DEBUG 2182 if (fdc_debug) { 2183 int i; 2184 2185 printf("fdformat: blkno 0x%llx count %d\n", 2186 (unsigned long long)bp->b_blkno, bp->b_bcount); 2187 2188 printf("\tcyl:\t%d\n", finfo->cyl); 2189 printf("\thead:\t%d\n", finfo->head); 2190 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2191 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2192 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2193 printf("\ttrack data:"); 2194 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2195 printf(" [c%d h%d s%d]", 2196 finfo->fd_formb_cylno(i), 2197 finfo->fd_formb_headno(i), 2198 finfo->fd_formb_secno(i) ); 2199 if (finfo->fd_formb_secsize(i) != 2) 2200 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2201 } 2202 printf("\n"); 2203 } 2204 #endif 2205 2206 /* now do the format */ 2207 fdstrategy(bp); 2208 2209 /* ...and wait for it to complete */ 2210 rv = biowait(bp); 2211 putiobuf(bp); 2212 return (rv); 2213 } 2214 2215 void 2216 fdgetdisklabel(dev_t dev) 2217 { 2218 int unit = FDUNIT(dev), i; 2219 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2220 struct disklabel *lp = fd->sc_dk.dk_label; 2221 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2222 2223 memset(lp, 0, sizeof(struct disklabel)); 2224 memset(lp, 0, sizeof(struct cpu_disklabel)); 2225 2226 lp->d_type = DTYPE_FLOPPY; 2227 lp->d_secsize = FD_BSIZE(fd); 2228 lp->d_secpercyl = fd->sc_type->seccyl; 2229 lp->d_nsectors = fd->sc_type->sectrac; 2230 lp->d_ncylinders = fd->sc_type->cylinders; 2231 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2232 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2233 lp->d_rpm = 3600; /* XXX like it matters... */ 2234 2235 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2236 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2237 lp->d_interleave = 1; 2238 2239 lp->d_partitions[RAW_PART].p_offset = 0; 2240 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2241 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2242 lp->d_npartitions = RAW_PART + 1; 2243 2244 lp->d_magic = DISKMAGIC; 2245 lp->d_magic2 = DISKMAGIC; 2246 lp->d_checksum = dkcksum(lp); 2247 2248 /* 2249 * Call the generic disklabel extraction routine. If there's 2250 * not a label there, fake it. 2251 */ 2252 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2253 strncpy(lp->d_packname, "default label", 2254 sizeof(lp->d_packname)); 2255 /* 2256 * Reset the partition info; it might have gotten 2257 * trashed in readdisklabel(). 2258 * 2259 * XXX Why do we have to do this? readdisklabel() 2260 * should be safe... 2261 */ 2262 for (i = 0; i < MAXPARTITIONS; ++i) { 2263 lp->d_partitions[i].p_offset = 0; 2264 if (i == RAW_PART) { 2265 lp->d_partitions[i].p_size = 2266 lp->d_secpercyl * lp->d_ncylinders; 2267 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2268 } else { 2269 lp->d_partitions[i].p_size = 0; 2270 lp->d_partitions[i].p_fstype = FS_UNUSED; 2271 } 2272 } 2273 lp->d_npartitions = RAW_PART + 1; 2274 } 2275 } 2276 2277 void 2278 fd_do_eject(struct fd_softc *fd) 2279 { 2280 struct fdc_softc *fdc = device_private(device_parent(&fd->sc_dv)); 2281 2282 if (CPU_ISSUN4C) { 2283 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2284 delay(10); 2285 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2286 return; 2287 } 2288 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2289 bus_space_tag_t t = fdc->sc_bustag; 2290 bus_space_handle_t h = fdc->sc_handle; 2291 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2292 2293 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2294 delay(10); 2295 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2296 return; 2297 } 2298 } 2299 2300 /* ARGSUSED */ 2301 void 2302 fd_mountroot_hook(struct device *dev) 2303 { 2304 int c; 2305 2306 fd_do_eject(device_private(dev)); 2307 printf("Insert filesystem floppy and press return."); 2308 for (;;) { 2309 c = cngetc(); 2310 if ((c == '\r') || (c == '\n')) { 2311 printf("\n"); 2312 break; 2313 } 2314 } 2315 } 2316 2317 #ifdef MEMORY_DISK_HOOKS 2318 2319 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2320 2321 int 2322 fd_read_md_image(size_t *sizep, void * *addrp) 2323 { 2324 struct buf buf, *bp = &buf; 2325 dev_t dev; 2326 off_t offset; 2327 void *addr; 2328 2329 dev = makedev(54,0); /* XXX */ 2330 2331 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2332 *addrp = addr; 2333 2334 if (fdopen(dev, 0, S_IFCHR, NULL)) 2335 panic("fd: mountroot: fdopen"); 2336 2337 offset = 0; 2338 2339 for (;;) { 2340 bp->b_dev = dev; 2341 bp->b_error = 0; 2342 bp->b_resid = 0; 2343 bp->b_proc = NULL; 2344 bp->b_cflags |= BC_BUSY; 2345 bp->b_flags = B_PHYS | B_RAW | B_READ; 2346 bp->b_blkno = btodb(offset); 2347 bp->b_bcount = DEV_BSIZE; 2348 bp->b_data = addr; 2349 fdstrategy(bp); 2350 biowait(bp); 2351 if (bp->b_error) 2352 panic("fd: mountroot: fdread error %d", bp->b_error); 2353 2354 if (bp->b_resid != 0) 2355 break; 2356 2357 addr = (char *)addr + DEV_BSIZE; 2358 offset += DEV_BSIZE; 2359 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2360 break; 2361 } 2362 (void)fdclose(dev, 0, S_IFCHR, NULL); 2363 *sizep = offset; 2364 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2365 return (0); 2366 } 2367 #endif /* MEMORY_DISK_HOOKS */ 2368