Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/arch/sparc64/dev/fd.c
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1 /* $OpenBSD: fd.c,v 1.52 2021/10/24 17:05:03 mpi Exp $ */ 2 /* $NetBSD: fd.c,v 1.112 2003/08/07 16:29:35 agc Exp $ */ 3 4 /*- 5 * Copyright (c) 2000 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /*- 34 * Copyright (c) 1990 The Regents of the University of California. 35 * All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * Don Ahn. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)fd.c 7.4 (Berkeley) 5/25/91 65 */ 66 67 /*- 68 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 69 * Copyright (c) 1995 Paul Kranenburg. 70 * 71 * This code is derived from software contributed to Berkeley by 72 * Don Ahn. 73 * 74 * Redistribution and use in source and binary forms, with or without 75 * modification, are permitted provided that the following conditions 76 * are met: 77 * 1. Redistributions of source code must retain the above copyright 78 * notice, this list of conditions and the following disclaimer. 79 * 2. Redistributions in binary form must reproduce the above copyright 80 * notice, this list of conditions and the following disclaimer in the 81 * documentation and/or other materials provided with the distribution. 82 * 3. All advertising materials mentioning features or use of this software 83 * must display the following acknowledgement: 84 * This product includes software developed by the University of 85 * California, Berkeley and its contributors. 86 * 4. Neither the name of the University nor the names of its contributors 87 * may be used to endorse or promote products derived from this software 88 * without specific prior written permission. 89 * 90 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 91 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 92 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 93 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 94 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 95 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 96 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 97 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 98 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 99 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 100 * SUCH DAMAGE. 101 * 102 * @(#)fd.c 7.4 (Berkeley) 5/25/91 103 */ 104 105 #include <sys/param.h> 106 #include <sys/systm.h> 107 #include <sys/timeout.h> 108 #include <sys/kernel.h> 109 #include <sys/fcntl.h> 110 #include <sys/ioctl.h> 111 #include <sys/conf.h> 112 #include <sys/device.h> 113 #include <sys/disklabel.h> 114 #include <sys/disk.h> 115 #include <sys/buf.h> 116 #include <sys/malloc.h> 117 #include <sys/proc.h> 118 #include <sys/uio.h> 119 #include <sys/mtio.h> 120 #include <sys/stat.h> 121 #include <sys/syslog.h> 122 #include <sys/queue.h> 123 #include <sys/dkio.h> 124 125 #include <dev/cons.h> 126 127 #include <uvm/uvm_extern.h> 128 129 #include <machine/autoconf.h> 130 #include <machine/conf.h> 131 #include <machine/intr.h> 132 #include <machine/ioctl_fd.h> 133 134 #include <sparc64/dev/auxioreg.h> 135 #include <sparc64/dev/auxiovar.h> 136 #include <sparc64/dev/ebusreg.h> 137 #include <sparc64/dev/ebusvar.h> 138 #include <sparc64/dev/fdreg.h> 139 #include <sparc64/dev/fdvar.h> 140 141 #define FDUNIT(dev) ((minor(dev) / MAXPARTITIONS) / 8) 142 #define FDTYPE(dev) ((minor(dev) / MAXPARTITIONS) % 8) 143 144 #define FTC_FLIP \ 145 do { \ 146 auxio_fd_control(AUXIO_LED_FTC); \ 147 auxio_fd_control(0); \ 148 } while (0) 149 150 /* XXX misuse a flag to identify format operation */ 151 #define B_FORMAT B_XXX 152 153 #ifdef FD_DEBUG 154 int fdc_debug = 0; 155 #endif 156 157 enum fdc_state { 158 DEVIDLE = 0, 159 MOTORWAIT, /* 1 */ 160 DOSEEK, /* 2 */ 161 SEEKWAIT, /* 3 */ 162 SEEKTIMEDOUT, /* 4 */ 163 SEEKCOMPLETE, /* 5 */ 164 DOIO, /* 6 */ 165 IOCOMPLETE, /* 7 */ 166 IOTIMEDOUT, /* 8 */ 167 IOCLEANUPWAIT, /* 9 */ 168 IOCLEANUPTIMEDOUT,/*10 */ 169 DORESET, /* 11 */ 170 RESETCOMPLETE, /* 12 */ 171 RESETTIMEDOUT, /* 13 */ 172 DORECAL, /* 14 */ 173 RECALWAIT, /* 15 */ 174 RECALTIMEDOUT, /* 16 */ 175 RECALCOMPLETE, /* 17 */ 176 DODSKCHG, /* 18 */ 177 DSKCHGWAIT, /* 19 */ 178 DSKCHGTIMEDOUT, /* 20 */ 179 }; 180 181 /* software state, per controller */ 182 struct fdc_softc { 183 struct device sc_dev; /* boilerplate */ 184 bus_space_tag_t sc_bustag; 185 186 struct timeout fdctimeout_to; 187 struct timeout fdcpseudointr_to; 188 189 struct fd_softc *sc_fd[4]; /* pointers to children */ 190 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 191 enum fdc_state sc_state; 192 int sc_flags; 193 #define FDC_EBUS 0x01 194 #define FDC_NEEDHEADSETTLE 0x02 195 #define FDC_EIS 0x04 196 #define FDC_NEEDMOTORWAIT 0x08 197 #define FDC_NOEJECT 0x10 198 int sc_errors; /* number of retries so far */ 199 int sc_overruns; /* number of DMA overruns */ 200 int sc_cfg; /* current configuration */ 201 struct fdcio sc_io; 202 #define sc_handle sc_io.fdcio_handle 203 #define sc_itask sc_io.fdcio_itask 204 #define sc_istatus sc_io.fdcio_istatus 205 #define sc_data sc_io.fdcio_data 206 #define sc_tc sc_io.fdcio_tc 207 #define sc_nstat sc_io.fdcio_nstat 208 #define sc_status sc_io.fdcio_status 209 210 void *sc_sicookie; /* softintr(9) cookie */ 211 }; 212 213 /* controller driver configuration */ 214 int fdcmatch_sbus(struct device *, void *, void *); 215 int fdcmatch_ebus(struct device *, void *, void *); 216 void fdcattach_sbus(struct device *, struct device *, void *); 217 void fdcattach_ebus(struct device *, struct device *, void *); 218 219 int fdcattach(struct fdc_softc *, int); 220 221 const struct cfattach fdc_sbus_ca = { 222 sizeof(struct fdc_softc), fdcmatch_sbus, fdcattach_sbus 223 }; 224 225 const struct cfattach fdc_ebus_ca = { 226 sizeof(struct fdc_softc), fdcmatch_ebus, fdcattach_ebus 227 }; 228 229 struct cfdriver fdc_cd = { 230 NULL, "fdc", DV_DULL 231 }; 232 233 __inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 234 235 /* The order of entries in the following table is important -- BEWARE! */ 236 struct fd_type fd_types[] = { 237 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS, "1.44MB" }, /* 1.44MB diskette */ 238 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS, "720KB" }, /* 3.5" 720kB diskette */ 239 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS, "360KB/x" }, /* 360kB in 720kB drive */ 240 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS, "1.2MB/NEC" } /* 1.2 MB japanese format */ 241 }; 242 243 /* software state, per disk (with up to 4 disks per ctlr) */ 244 struct fd_softc { 245 struct device sc_dv; /* generic device info */ 246 struct disk sc_dk; /* generic disk info */ 247 248 struct fd_type *sc_deftype; /* default type descriptor */ 249 struct fd_type *sc_type; /* current type descriptor */ 250 251 struct timeout sc_motoron_to; 252 struct timeout sc_motoroff_to; 253 254 daddr_t sc_blkno; /* starting block number */ 255 int sc_bcount; /* byte count left */ 256 int sc_skip; /* bytes already transferred */ 257 int sc_nblks; /* number of blocks currently transferring */ 258 int sc_nbytes; /* number of bytes currently transferring */ 259 260 int sc_drive; /* physical unit number */ 261 int sc_flags; 262 #define FD_OPEN 0x01 /* it's open */ 263 #define FD_MOTOR 0x02 /* motor should be on */ 264 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 265 int sc_cylin; /* where we think the head is */ 266 int sc_opts; /* user-set options */ 267 268 TAILQ_ENTRY(fd_softc) sc_drivechain; 269 int sc_ops; /* I/O ops since last switch */ 270 struct bufq sc_bufq; /* pending I/O requests */ 271 struct buf *sc_bp; /* current I/O */ 272 }; 273 274 /* floppy driver configuration */ 275 int fdmatch(struct device *, void *, void *); 276 void fdattach(struct device *, struct device *, void *); 277 int fdactivate(struct device *, int); 278 279 const struct cfattach fd_ca = { 280 sizeof(struct fd_softc), fdmatch, fdattach, 281 NULL, fdactivate 282 }; 283 284 struct cfdriver fd_cd = { 285 NULL, "fd", DV_DISK 286 }; 287 288 int fdgetdisklabel(dev_t, struct fd_softc *, struct disklabel *, int); 289 int fd_get_parms(struct fd_softc *); 290 void fdstrategy(struct buf *); 291 void fdstart(struct fd_softc *); 292 int fdprint(void *, const char *); 293 294 struct fd_type *fd_nvtotype(char *, int, int); 295 void fd_set_motor(struct fdc_softc *fdc); 296 void fd_motor_off(void *arg); 297 void fd_motor_on(void *arg); 298 int fdcresult(struct fdc_softc *fdc); 299 int fdc_wrfifo(struct fdc_softc *fdc, u_char x); 300 void fdcstart(struct fdc_softc *fdc); 301 void fdcstatus(struct fdc_softc *fdc, char *s); 302 void fdc_reset(struct fdc_softc *fdc); 303 int fdc_diskchange(struct fdc_softc *fdc); 304 void fdctimeout(void *arg); 305 void fdcpseudointr(void *arg); 306 int fdchwintr(void *); 307 void fdcswintr(void *); 308 int fdcstate(struct fdc_softc *); 309 void fdcretry(struct fdc_softc *fdc); 310 void fdfinish(struct fd_softc *fd, struct buf *bp); 311 int fdformat(dev_t, struct fd_formb *, struct proc *); 312 void fd_do_eject(struct fd_softc *); 313 static int fdconf(struct fdc_softc *); 314 315 int 316 fdcmatch_sbus(struct device *parent, void *match, void *aux) 317 { 318 struct sbus_attach_args *sa = aux; 319 320 return (strcmp("SUNW,fdtwo", sa->sa_name) == 0); 321 } 322 323 void 324 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 325 { 326 struct fdc_softc *fdc = (void *)self; 327 struct sbus_attach_args *sa = aux; 328 329 if (sa->sa_nintr == 0) { 330 printf(": no interrupt line configured\n"); 331 return; 332 } 333 334 if (auxio_fd_control(0) != 0) { 335 printf(": can't attach before auxio\n"); 336 return; 337 } 338 339 fdc->sc_bustag = sa->sa_bustag; 340 341 if (sbus_bus_map(sa->sa_bustag, 342 sa->sa_slot, sa->sa_offset, sa->sa_size, 343 BUS_SPACE_MAP_LINEAR, 0, &fdc->sc_handle) != 0) { 344 printf(": cannot map control registers\n"); 345 return; 346 } 347 348 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 349 printf(": no drives attached\n"); 350 return; 351 } 352 353 if (getproplen(sa->sa_node, "manual") >= 0) 354 fdc->sc_flags |= FDC_NOEJECT; 355 356 if (fdcattach(fdc, sa->sa_pri) != 0) 357 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 358 } 359 360 int 361 fdcmatch_ebus(struct device *parent, void *match, void *aux) 362 { 363 struct ebus_attach_args *ea = aux; 364 365 return (strcmp("fdthree", ea->ea_name) == 0); 366 } 367 368 void 369 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 370 { 371 struct fdc_softc *fdc = (void *)self; 372 struct ebus_attach_args *ea = aux; 373 374 if (ea->ea_nintrs == 0) { 375 printf(": no interrupt line configured\n"); 376 return; 377 } 378 379 if (ea->ea_nregs < 3) { 380 printf(": expected 3 registers, only got %d\n", 381 ea->ea_nregs); 382 return; 383 } 384 385 if (ea->ea_nvaddrs > 0) { 386 if (bus_space_map(ea->ea_memtag, ea->ea_vaddrs[0], 0, 387 BUS_SPACE_MAP_PROMADDRESS, &fdc->sc_handle) != 0) { 388 printf(": can't map control registers\n"); 389 return; 390 } 391 fdc->sc_bustag = ea->ea_memtag; 392 } else if (ebus_bus_map(ea->ea_memtag, 0, 393 EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), 394 ea->ea_regs[0].size, 0, 0, &fdc->sc_handle) == 0) { 395 fdc->sc_bustag = ea->ea_memtag; 396 } else if (ebus_bus_map(ea->ea_iotag, 0, 397 EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), 398 ea->ea_regs[0].size, 0, 0, &fdc->sc_handle) == 0) { 399 fdc->sc_bustag = ea->ea_iotag; 400 } else { 401 printf(": can't map control registers\n"); 402 return; 403 } 404 405 if (strcmp(getpropstring(ea->ea_node, "status"), "disabled") == 0) { 406 printf(": no drives attached\n"); 407 return; 408 } 409 410 fdc->sc_flags |= FDC_EBUS; 411 412 if (getproplen(ea->ea_node, "manual") >= 0) 413 fdc->sc_flags |= FDC_NOEJECT; 414 415 /* XXX unmapping if it fails */ 416 fdcattach(fdc, ea->ea_intrs[0]); 417 } 418 419 /* 420 * Arguments passed between fdcattach and fdprobe. 421 */ 422 struct fdc_attach_args { 423 int fa_drive; 424 struct fd_type *fa_deftype; 425 }; 426 427 /* 428 * Print the location of a disk drive (called just before attaching the 429 * the drive). If `fdc' is not NULL, the drive was found but was not 430 * in the system config file; print the drive name as well. 431 * Return QUIET (config_find ignores this if the device was configured) to 432 * avoid printing `fdN not configured' messages. 433 */ 434 int 435 fdprint(void *aux, const char *fdc) 436 { 437 register struct fdc_attach_args *fa = aux; 438 439 if (!fdc) 440 printf(" drive %d", fa->fa_drive); 441 return (QUIET); 442 } 443 444 /* 445 * Configure several parameters and features on the FDC. 446 * Return 0 on success. 447 */ 448 static int 449 fdconf(struct fdc_softc *fdc) 450 { 451 int vroom; 452 453 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 454 return (-1); 455 456 /* 457 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 458 * the PROM thinks is appropriate. 459 */ 460 if ((vroom = fdc->sc_status[7]) == 0) 461 vroom = 0x64; 462 463 /* Configure controller to use FIFO and Implied Seek */ 464 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 465 return (-1); 466 if (fdc_wrfifo(fdc, vroom) != 0) 467 return (-1); 468 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 469 return (-1); 470 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 471 return (-1); 472 /* No result phase for the NE7CMD_CFG command */ 473 474 /* Lock configuration across soft resets. */ 475 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 476 fdcresult(fdc) != 1) { 477 #ifdef FD_DEBUG 478 printf("fdconf: CFGLOCK failed"); 479 #endif 480 return (-1); 481 } 482 483 return (0); 484 #if 0 485 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 486 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 487 if (fdc_debug) 488 printf("[version cmd]"); 489 } 490 #endif 491 } 492 493 int 494 fdcattach(struct fdc_softc *fdc, int pri) 495 { 496 struct fdc_attach_args fa; 497 int drive_attached; 498 499 timeout_set(&fdc->fdctimeout_to, fdctimeout, fdc); 500 timeout_set(&fdc->fdcpseudointr_to, fdcpseudointr, fdc); 501 502 fdc->sc_state = DEVIDLE; 503 fdc->sc_itask = FDC_ITASK_NONE; 504 fdc->sc_istatus = FDC_ISTATUS_NONE; 505 fdc->sc_flags |= FDC_EIS | FDC_NEEDMOTORWAIT; 506 TAILQ_INIT(&fdc->sc_drives); 507 508 /* 509 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 510 * Note: CFG_EFIFO is active-low, initial threshold value: 8 511 */ 512 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 513 if (fdconf(fdc) != 0) { 514 printf("\n%s: no drives attached\n", fdc->sc_dev.dv_xname); 515 return (-1); 516 } 517 518 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 519 0, fdchwintr, fdc, fdc->sc_dev.dv_xname) == NULL) { 520 printf("\n%s: cannot register interrupt handler\n", 521 fdc->sc_dev.dv_xname); 522 return (-1); 523 } 524 525 fdc->sc_sicookie = softintr_establish(IPL_BIO, fdcswintr, fdc); 526 if (fdc->sc_sicookie == NULL) { 527 printf("\n%s: cannot register soft interrupt handler\n", 528 fdc->sc_dev.dv_xname); 529 return (-1); 530 } 531 532 if (fdc->sc_flags & FDC_NOEJECT) 533 printf(": manual eject"); 534 printf("\n"); 535 536 /* physical limit: four drives per controller. */ 537 drive_attached = 0; 538 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 539 fa.fa_deftype = NULL; /* unknown */ 540 fa.fa_deftype = &fd_types[0]; /* XXX */ 541 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL) 542 drive_attached = 1; 543 } 544 545 if (drive_attached == 0) { 546 /* XXX - dis-establish interrupts here */ 547 /* return (-1); */ 548 } 549 550 return (0); 551 } 552 553 int 554 fdmatch(struct device *parent, void *match, void *aux) 555 { 556 struct fdc_softc *fdc = (void *)parent; 557 bus_space_tag_t t = fdc->sc_bustag; 558 bus_space_handle_t h = fdc->sc_handle; 559 struct fdc_attach_args *fa = aux; 560 int drive = fa->fa_drive; 561 int n, ok; 562 563 if (drive > 0) 564 /* XXX - for now, punt on more than one drive */ 565 return (0); 566 567 /* select drive and turn on motor */ 568 bus_space_write_1(t, h, FDREG77_DOR, 569 drive | FDO_FRST | FDO_MOEN(drive)); 570 /* wait for motor to spin up */ 571 delay(250000); 572 573 fdc->sc_nstat = 0; 574 fdc_wrfifo(fdc, NE7CMD_RECAL); 575 fdc_wrfifo(fdc, drive); 576 577 /* Wait for recalibration to complete */ 578 for (n = 0; n < 10000; n++) { 579 u_int8_t v; 580 581 delay(1000); 582 v = bus_space_read_1(t, h, FDREG77_MSR); 583 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 584 /* wait a bit longer till device *really* is ready */ 585 delay(100000); 586 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 587 break; 588 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 589 /* 590 * Got `invalid command'; we interpret it 591 * to mean that the re-calibrate hasn't in 592 * fact finished yet 593 */ 594 continue; 595 break; 596 } 597 } 598 n = fdc->sc_nstat; 599 #ifdef FD_DEBUG 600 if (fdc_debug) { 601 int i; 602 printf("fdprobe: %d stati:", n); 603 for (i = 0; i < n; i++) 604 printf(" 0x%x", fdc->sc_status[i]); 605 printf("\n"); 606 } 607 #endif 608 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 609 610 /* deselect drive and turn motor off */ 611 bus_space_write_1(t, h, FDREG77_DOR, FDO_FRST | FDO_DS); 612 613 return (ok); 614 } 615 616 /* 617 * Controller is working, and drive responded. Attach it. 618 */ 619 void 620 fdattach(struct device *parent, struct device *self, void *aux) 621 { 622 struct fdc_softc *fdc = (void *)parent; 623 struct fd_softc *fd = (void *)self; 624 struct fdc_attach_args *fa = aux; 625 struct fd_type *type = fa->fa_deftype; 626 int drive = fa->fa_drive; 627 628 timeout_set(&fd->sc_motoron_to, fd_motor_on, fd); 629 timeout_set(&fd->sc_motoroff_to, fd_motor_off, fd); 630 631 /* XXX Allow `flags' to override device type? */ 632 633 if (type) 634 printf(": %s %d cyl, %d head, %d sec\n", type->name, 635 type->tracks, type->heads, type->sectrac); 636 else 637 printf(": density unknown\n"); 638 639 fd->sc_cylin = -1; 640 fd->sc_drive = drive; 641 fd->sc_deftype = type; 642 fdc->sc_fd[drive] = fd; 643 644 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 645 fdc_wrfifo(fdc, type->steprate); 646 /* XXX head load time == 6ms */ 647 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 648 649 /* 650 * Initialize and attach the disk structure. 651 */ 652 fd->sc_dk.dk_flags = DKF_NOLABELREAD; 653 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 654 bufq_init(&fd->sc_bufq, BUFQ_DEFAULT); 655 disk_attach(&fd->sc_dv, &fd->sc_dk); 656 } 657 658 int 659 fdactivate(struct device *self, int act) 660 { 661 int ret = 0; 662 663 switch (act) { 664 case DVACT_POWERDOWN: 665 /* Make sure the drive motor gets turned off at shutdown time. */ 666 fd_motor_off(self); 667 break; 668 } 669 670 return (ret); 671 } 672 673 __inline struct fd_type * 674 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 675 { 676 int type = FDTYPE(dev); 677 678 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 679 return (NULL); 680 return (type ? &fd_types[type - 1] : fd->sc_deftype); 681 } 682 683 void 684 fdstrategy(struct buf *bp) 685 { 686 struct fd_softc *fd; 687 int unit = FDUNIT(bp->b_dev); 688 int sz; 689 int s; 690 691 /* Valid unit, controller, and request? */ 692 if (unit >= fd_cd.cd_ndevs || 693 (fd = fd_cd.cd_devs[unit]) == 0 || 694 bp->b_blkno < 0 || 695 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 696 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 697 (bp->b_flags & B_FORMAT) == 0)) { 698 bp->b_error = EINVAL; 699 goto bad; 700 } 701 702 /* If it's a null transfer, return immediately. */ 703 if (bp->b_bcount == 0) 704 goto done; 705 706 bp->b_resid = bp->b_bcount; 707 sz = howmany(bp->b_bcount, DEV_BSIZE); 708 709 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 710 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 711 - bp->b_blkno; 712 if (sz == 0) { 713 /* If exactly at end of disk, return EOF. */ 714 goto done; 715 } 716 if (sz < 0) { 717 /* If past end of disk, return EINVAL. */ 718 bp->b_error = EINVAL; 719 goto bad; 720 } 721 /* Otherwise, truncate request. */ 722 bp->b_bcount = sz << DEV_BSHIFT; 723 } 724 725 #ifdef FD_DEBUG 726 if (fdc_debug > 1) 727 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld\n", 728 (long long)bp->b_blkno, bp->b_bcount, 729 (long long)fd->sc_blkno); 730 #endif 731 732 /* Queue transfer */ 733 bufq_queue(&fd->sc_bufq, bp); 734 735 /* Queue transfer on drive, activate drive and controller if idle. */ 736 s = splbio(); 737 timeout_del(&fd->sc_motoroff_to); /* a good idea */ 738 if (fd->sc_bp == NULL) 739 fdstart(fd); 740 #ifdef DIAGNOSTIC 741 else { 742 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 743 if (fdc->sc_state == DEVIDLE) { 744 printf("fdstrategy: controller inactive\n"); 745 fdcstart(fdc); 746 } 747 } 748 #endif 749 splx(s); 750 return; 751 752 bad: 753 bp->b_flags |= B_ERROR; 754 done: 755 /* Toss transfer; we're done early. */ 756 s = splbio(); 757 biodone(bp); 758 splx(s); 759 } 760 761 void 762 fdstart(struct fd_softc *fd) 763 { 764 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 765 int active = !TAILQ_EMPTY(&fdc->sc_drives); 766 767 /* Link into controller queue. */ 768 fd->sc_bp = bufq_dequeue(&fd->sc_bufq); 769 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 770 771 /* If controller not already active, start it. */ 772 if (!active) 773 fdcstart(fdc); 774 } 775 776 void 777 fdfinish(struct fd_softc *fd, struct buf *bp) 778 { 779 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 780 781 fd->sc_skip = 0; 782 fd->sc_bp = bufq_dequeue(&fd->sc_bufq); 783 784 /* 785 * Move this drive to the end of the queue to give others a `fair' 786 * chance. We only force a switch if N operations are completed while 787 * another drive is waiting to be serviced, since there is a long motor 788 * startup delay whenever we switch. 789 */ 790 if (TAILQ_NEXT(fd, sc_drivechain) != NULL && ++fd->sc_ops >= 8) { 791 fd->sc_ops = 0; 792 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 793 if (fd->sc_bp != NULL) 794 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 795 } 796 797 biodone(bp); 798 /* turn off motor 5s from now */ 799 timeout_add_sec(&fd->sc_motoroff_to, 5); 800 fdc->sc_state = DEVIDLE; 801 } 802 803 void 804 fdc_reset(struct fdc_softc *fdc) 805 { 806 bus_space_tag_t t = fdc->sc_bustag; 807 bus_space_handle_t h = fdc->sc_handle; 808 809 bus_space_write_1(t, h, FDREG77_DOR, FDO_FDMAEN | FDO_MOEN(0)); 810 811 bus_space_write_1(t, h, FDREG77_DRS, DRS_RESET); 812 delay(10); 813 bus_space_write_1(t, h, FDREG77_DRS, 0); 814 815 bus_space_write_1(t, h, FDREG77_DOR, 816 FDO_FRST | FDO_FDMAEN | FDO_DS); 817 #ifdef FD_DEBUG 818 if (fdc_debug) 819 printf("fdc reset\n"); 820 #endif 821 } 822 823 void 824 fd_set_motor(struct fdc_softc *fdc) 825 { 826 struct fd_softc *fd; 827 u_char status; 828 int n; 829 830 status = FDO_FRST | FDO_FDMAEN; 831 if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != NULL) 832 status |= fd->sc_drive; 833 834 for (n = 0; n < 4; n++) 835 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 836 status |= FDO_MOEN(n); 837 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 838 FDREG77_DOR, status); 839 } 840 841 void 842 fd_motor_off(void *arg) 843 { 844 struct fd_softc *fd = arg; 845 int s; 846 847 s = splbio(); 848 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 849 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 850 splx(s); 851 } 852 853 void 854 fd_motor_on(void *arg) 855 { 856 struct fd_softc *fd = arg; 857 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 858 int s; 859 860 s = splbio(); 861 fd->sc_flags &= ~FD_MOTOR_WAIT; 862 if (fd == TAILQ_FIRST(&fdc->sc_drives) && fdc->sc_state == MOTORWAIT) 863 (void) fdcstate(fdc); 864 splx(s); 865 } 866 867 /* 868 * Get status bytes off the FDC after a command has finished 869 * Returns the number of status bytes read; -1 on error. 870 * The return value is also stored in `sc_nstat'. 871 */ 872 int 873 fdcresult(struct fdc_softc *fdc) 874 { 875 bus_space_tag_t t = fdc->sc_bustag; 876 bus_space_handle_t h = fdc->sc_handle; 877 int j, n = 0; 878 879 for (j = 100000; j; j--) { 880 u_int8_t v = bus_space_read_1(t, h, FDREG77_MSR); 881 v &= (NE7_DIO | NE7_RQM | NE7_CB); 882 if (v == NE7_RQM) 883 return (fdc->sc_nstat = n); 884 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 885 if (n >= sizeof(fdc->sc_status)) { 886 log(LOG_ERR, "fdcresult: overrun\n"); 887 return (-1); 888 } 889 fdc->sc_status[n++] = 890 bus_space_read_1(t, h, FDREG77_FIFO); 891 } else 892 delay(1); 893 } 894 895 log(LOG_ERR, "fdcresult: timeout\n"); 896 return (fdc->sc_nstat = -1); 897 } 898 899 /* 900 * Write a command byte to the FDC. 901 * Returns 0 on success; -1 on failure (i.e. timeout) 902 */ 903 int 904 fdc_wrfifo(struct fdc_softc *fdc, u_int8_t x) 905 { 906 bus_space_tag_t t = fdc->sc_bustag; 907 bus_space_handle_t h = fdc->sc_handle; 908 int i; 909 910 for (i = 100000; i-- != 0;) { 911 u_int8_t v = bus_space_read_1(t, h, FDREG77_MSR); 912 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 913 /* The chip is ready */ 914 bus_space_write_1(t, h, FDREG77_FIFO, x); 915 return (0); 916 } 917 delay(1); 918 } 919 return (-1); 920 } 921 922 int 923 fdc_diskchange(struct fdc_softc *fdc) 924 { 925 bus_space_tag_t t = fdc->sc_bustag; 926 bus_space_handle_t h = fdc->sc_handle; 927 928 u_int8_t v = bus_space_read_1(t, h, FDREG77_DIR); 929 return ((v & FDI_DCHG) != 0); 930 } 931 932 int 933 fdopen(dev_t dev, int flags, int fmt, struct proc *p) 934 { 935 int unit, pmask; 936 struct fd_softc *fd; 937 struct fd_type *type; 938 939 unit = FDUNIT(dev); 940 if (unit >= fd_cd.cd_ndevs) 941 return (ENXIO); 942 fd = fd_cd.cd_devs[unit]; 943 if (fd == NULL) 944 return (ENXIO); 945 type = fd_dev_to_type(fd, dev); 946 if (type == NULL) 947 return (ENXIO); 948 949 if ((fd->sc_flags & FD_OPEN) != 0 && 950 fd->sc_type != type) 951 return (EBUSY); 952 953 fd->sc_type = type; 954 fd->sc_cylin = -1; 955 fd->sc_flags |= FD_OPEN; 956 957 /* 958 * Only update the disklabel if we're not open anywhere else. 959 */ 960 if (fd->sc_dk.dk_openmask == 0) 961 fdgetdisklabel(dev, fd, fd->sc_dk.dk_label, 0); 962 963 pmask = (1 << DISKPART(dev)); 964 965 switch (fmt) { 966 case S_IFCHR: 967 fd->sc_dk.dk_copenmask |= pmask; 968 break; 969 970 case S_IFBLK: 971 fd->sc_dk.dk_bopenmask |= pmask; 972 break; 973 } 974 fd->sc_dk.dk_openmask = 975 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 976 977 return (0); 978 } 979 980 int 981 fdclose(dev_t dev, int flags, int fmt, struct proc *p) 982 { 983 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 984 int pmask = (1 << DISKPART(dev)); 985 986 fd->sc_flags &= ~FD_OPEN; 987 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 988 989 switch (fmt) { 990 case S_IFCHR: 991 fd->sc_dk.dk_copenmask &= ~pmask; 992 break; 993 994 case S_IFBLK: 995 fd->sc_dk.dk_bopenmask &= ~pmask; 996 break; 997 } 998 fd->sc_dk.dk_openmask = 999 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1000 1001 return (0); 1002 } 1003 1004 int 1005 fdread(dev_t dev, struct uio *uio, int flag) 1006 { 1007 1008 return (physio(fdstrategy, dev, B_READ, minphys, uio)); 1009 } 1010 1011 int 1012 fdwrite(dev_t dev, struct uio *uio, int flag) 1013 { 1014 1015 return (physio(fdstrategy, dev, B_WRITE, minphys, uio)); 1016 } 1017 1018 void 1019 fdcstart(struct fdc_softc *fdc) 1020 { 1021 1022 #ifdef DIAGNOSTIC 1023 /* only got here if controller's drive queue was inactive; should 1024 be in idle state */ 1025 if (fdc->sc_state != DEVIDLE) { 1026 printf("fdcstart: not idle\n"); 1027 return; 1028 } 1029 #endif 1030 (void) fdcstate(fdc); 1031 } 1032 1033 void 1034 fdcstatus(struct fdc_softc *fdc, char *s) 1035 { 1036 struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); 1037 int n; 1038 1039 /* Just print last status */ 1040 n = fdc->sc_nstat; 1041 1042 #if 0 1043 if (n == 0) { 1044 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1045 (void) fdcresult(fdc); 1046 n = 2; 1047 } 1048 #endif 1049 1050 printf("%s: %s: state %d", 1051 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1052 1053 switch (n) { 1054 case 0: 1055 printf("\n"); 1056 break; 1057 case 2: 1058 printf(" (st0 %b cyl %d)\n", 1059 fdc->sc_status[0], NE7_ST0BITS, 1060 fdc->sc_status[1]); 1061 break; 1062 case 7: 1063 printf(" (st0 %b st1 %b st2 %b cyl %d head %d sec %d)\n", 1064 fdc->sc_status[0], NE7_ST0BITS, 1065 fdc->sc_status[1], NE7_ST1BITS, 1066 fdc->sc_status[2], NE7_ST2BITS, 1067 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1068 break; 1069 #ifdef DIAGNOSTIC 1070 default: 1071 printf(" fdcstatus: weird size: %d\n", n); 1072 break; 1073 #endif 1074 } 1075 } 1076 1077 void 1078 fdctimeout(void *arg) 1079 { 1080 struct fdc_softc *fdc = arg; 1081 struct fd_softc *fd; 1082 int s; 1083 1084 s = splbio(); 1085 fd = TAILQ_FIRST(&fdc->sc_drives); 1086 if (fd == NULL) { 1087 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1088 fdc->sc_dev.dv_xname, fdc->sc_state, fdc->sc_istatus); 1089 fdc->sc_state = DEVIDLE; 1090 goto out; 1091 } 1092 1093 if (fd->sc_bp != NULL) 1094 fdc->sc_state++; 1095 else 1096 fdc->sc_state = DEVIDLE; 1097 1098 (void) fdcstate(fdc); 1099 out: 1100 splx(s); 1101 1102 } 1103 1104 void 1105 fdcpseudointr(void *arg) 1106 { 1107 struct fdc_softc *fdc = arg; 1108 int s; 1109 1110 /* Just ensure it has the right spl. */ 1111 s = splbio(); 1112 (void) fdcstate(fdc); 1113 splx(s); 1114 } 1115 1116 1117 /* 1118 * Hardware interrupt entry point. 1119 * Unfortunately, we have no reliable way to determine that the 1120 * interrupt really came from the floppy controller; just hope 1121 * that the other devices that share this interrupt can do better.. 1122 */ 1123 int 1124 fdchwintr(void *arg) 1125 { 1126 struct fdc_softc *fdc = arg; 1127 bus_space_tag_t t = fdc->sc_bustag; 1128 bus_space_handle_t h = fdc->sc_handle; 1129 1130 switch (fdc->sc_itask) { 1131 case FDC_ITASK_NONE: 1132 return (0); 1133 case FDC_ITASK_SENSEI: 1134 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1135 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1136 else 1137 fdc->sc_istatus = FDC_ISTATUS_DONE; 1138 softintr_schedule(fdc->sc_sicookie); 1139 return (1); 1140 case FDC_ITASK_RESULT: 1141 if (fdcresult(fdc) == -1) 1142 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1143 else 1144 fdc->sc_istatus = FDC_ISTATUS_DONE; 1145 softintr_schedule(fdc->sc_sicookie); 1146 return (1); 1147 case FDC_ITASK_DMA: 1148 /* Proceed with pseudo-DMA below */ 1149 break; 1150 default: 1151 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1152 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1153 softintr_schedule(fdc->sc_sicookie); 1154 return (1); 1155 } 1156 1157 /* 1158 * Pseudo DMA in progress 1159 */ 1160 for (;;) { 1161 u_int8_t msr; 1162 1163 msr = bus_space_read_1(t, h, FDREG77_MSR); 1164 1165 if ((msr & NE7_RQM) == 0) 1166 /* That's all this round */ 1167 break; 1168 1169 if ((msr & NE7_NDM) == 0) { 1170 fdcresult(fdc); 1171 fdc->sc_istatus = FDC_ISTATUS_DONE; 1172 softintr_schedule(fdc->sc_sicookie); 1173 #ifdef FD_DEBUG 1174 if (fdc_debug > 1) 1175 printf("fdc: overrun: msr = %x, tc = %d\n", 1176 msr, fdc->sc_tc); 1177 #endif 1178 break; 1179 } 1180 1181 /* Another byte can be transferred */ 1182 if ((msr & NE7_DIO) != 0) 1183 *fdc->sc_data = 1184 bus_space_read_1(t, h, FDREG77_FIFO); 1185 else 1186 bus_space_write_1(t, h, FDREG77_FIFO, 1187 *fdc->sc_data); 1188 1189 fdc->sc_data++; 1190 if (--fdc->sc_tc == 0) { 1191 fdc->sc_istatus = FDC_ISTATUS_DONE; 1192 FTC_FLIP; 1193 fdcresult(fdc); 1194 softintr_schedule(fdc->sc_sicookie); 1195 break; 1196 } 1197 } 1198 return (1); 1199 } 1200 1201 void 1202 fdcswintr(void *arg) 1203 { 1204 struct fdc_softc *fdc = arg; 1205 int s; 1206 1207 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1208 /* This (software) interrupt is not for us */ 1209 return; 1210 1211 switch (fdc->sc_istatus) { 1212 case FDC_ISTATUS_ERROR: 1213 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1214 break; 1215 case FDC_ISTATUS_SPURIOUS: 1216 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1217 break; 1218 } 1219 1220 s = splbio(); 1221 fdcstate(fdc); 1222 splx(s); 1223 return; 1224 } 1225 1226 int 1227 fdcstate(struct fdc_softc *fdc) 1228 { 1229 #define st0 fdc->sc_status[0] 1230 #define st1 fdc->sc_status[1] 1231 #define cyl fdc->sc_status[1] 1232 #define FDC_WRFIFO(fdc, c) \ 1233 do { \ 1234 if (fdc_wrfifo(fdc, (c))) { \ 1235 goto xxx; \ 1236 } \ 1237 } while(0) 1238 1239 struct fd_softc *fd; 1240 struct buf *bp; 1241 int read, head, sec, nblks, cylin; 1242 struct fd_type *type; 1243 struct fd_formb *finfo = NULL; 1244 1245 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1246 /* Prevent loop if the reset sequence produces errors */ 1247 if (fdc->sc_state != RESETCOMPLETE && 1248 fdc->sc_state != RECALWAIT && 1249 fdc->sc_state != RECALCOMPLETE) 1250 fdc->sc_state = DORESET; 1251 } 1252 1253 /* Clear I task/status field */ 1254 fdc->sc_istatus = FDC_ISTATUS_NONE; 1255 fdc->sc_itask = FDC_ITASK_NONE; 1256 1257 loop: 1258 /* Is there a drive for the controller to do a transfer with? */ 1259 fd = TAILQ_FIRST(&fdc->sc_drives); 1260 if (fd == NULL) { 1261 fdc->sc_state = DEVIDLE; 1262 return (0); 1263 } 1264 1265 /* Is there a transfer to this drive? If not, deactivate drive. */ 1266 bp = fd->sc_bp; 1267 if (bp == NULL) { 1268 fd->sc_ops = 0; 1269 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1270 goto loop; 1271 } 1272 1273 if (bp->b_flags & B_FORMAT) 1274 finfo = (struct fd_formb *)bp->b_data; 1275 1276 cylin = ((bp->b_blkno * DEV_BSIZE) - (bp->b_bcount - bp->b_resid)) / 1277 (FD_BSIZE(fd) * fd->sc_type->seccyl); 1278 1279 switch (fdc->sc_state) { 1280 case DEVIDLE: 1281 fdc->sc_errors = 0; 1282 fd->sc_skip = 0; 1283 fd->sc_bcount = bp->b_bcount; 1284 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1285 timeout_del(&fd->sc_motoroff_to); 1286 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1287 fdc->sc_state = MOTORWAIT; 1288 return (1); 1289 } 1290 if ((fd->sc_flags & FD_MOTOR) == 0) { 1291 /* Turn on the motor, being careful about pairing. */ 1292 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1293 if (ofd && ofd->sc_flags & FD_MOTOR) { 1294 timeout_del(&ofd->sc_motoroff_to); 1295 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1296 } 1297 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1298 fd_set_motor(fdc); 1299 fdc->sc_state = MOTORWAIT; 1300 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1301 /* Allow .25s for motor to stabilize. */ 1302 timeout_add_msec(&fd->sc_motoron_to, 250); 1303 } else { 1304 fd->sc_flags &= ~FD_MOTOR_WAIT; 1305 goto loop; 1306 } 1307 return (1); 1308 } 1309 /* Make sure the right drive is selected. */ 1310 fd_set_motor(fdc); 1311 1312 if (fdc_diskchange(fdc)) 1313 goto dodskchg; 1314 1315 /*FALLTHROUGH*/ 1316 case DOSEEK: 1317 doseek: 1318 if ((fdc->sc_flags & FDC_EIS) && 1319 (bp->b_flags & B_FORMAT) == 0) { 1320 fd->sc_cylin = cylin; 1321 /* We use implied seek */ 1322 goto doio; 1323 } 1324 1325 if (fd->sc_cylin == cylin) 1326 goto doio; 1327 1328 fd->sc_cylin = -1; 1329 fdc->sc_state = SEEKWAIT; 1330 fdc->sc_nstat = 0; 1331 1332 fd->sc_dk.dk_seek++; 1333 1334 disk_busy(&fd->sc_dk); 1335 timeout_add_sec(&fdc->fdctimeout_to, 4); 1336 1337 /* specify command */ 1338 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1339 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1340 /* XXX head load time == 6ms */ 1341 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1342 1343 fdc->sc_itask = FDC_ITASK_SENSEI; 1344 /* seek function */ 1345 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1346 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1347 FDC_WRFIFO(fdc, cylin * fd->sc_type->step); 1348 return (1); 1349 1350 case DODSKCHG: 1351 dodskchg: 1352 /* 1353 * Disk change: force a seek operation by going to cyl 1 1354 * followed by a recalibrate. 1355 */ 1356 disk_busy(&fd->sc_dk); 1357 timeout_add_sec(&fdc->fdctimeout_to, 4); 1358 fd->sc_cylin = -1; 1359 fdc->sc_nstat = 0; 1360 fdc->sc_state = DSKCHGWAIT; 1361 1362 fdc->sc_itask = FDC_ITASK_SENSEI; 1363 /* seek function */ 1364 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1365 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1366 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1367 return (1); 1368 1369 case DSKCHGWAIT: 1370 timeout_del(&fdc->fdctimeout_to); 1371 disk_unbusy(&fd->sc_dk, 0, 0, 0); 1372 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1373 cyl != 1 * fd->sc_type->step) { 1374 fdcstatus(fdc, "dskchg seek failed"); 1375 fdc->sc_state = DORESET; 1376 } else 1377 fdc->sc_state = DORECAL; 1378 1379 if (fdc_diskchange(fdc)) { 1380 printf("%s: cannot clear disk change status\n", 1381 fdc->sc_dev.dv_xname); 1382 fdc->sc_state = DORESET; 1383 } 1384 goto loop; 1385 1386 case DOIO: 1387 doio: 1388 if (finfo != NULL) 1389 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1390 (char *)finfo; 1391 type = fd->sc_type; 1392 sec = fd->sc_blkno % type->seccyl; 1393 nblks = type->seccyl - sec; 1394 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1395 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1396 fd->sc_nblks = nblks; 1397 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1398 head = sec / type->sectrac; 1399 sec -= head * type->sectrac; 1400 #ifdef DIAGNOSTIC 1401 { 1402 daddr_t block; 1403 1404 block = (fd->sc_cylin * type->heads + head) * 1405 type->sectrac + sec; 1406 if (block != fd->sc_blkno) { 1407 printf("fdcintr: block %lld != blkno %lld\n", 1408 (long long)block, (long long)fd->sc_blkno); 1409 #if defined(FD_DEBUG) && defined(DDB) 1410 db_enter(); 1411 #endif 1412 } 1413 } 1414 #endif 1415 read = bp->b_flags & B_READ; 1416 1417 /* Setup for pseudo DMA */ 1418 fdc->sc_data = bp->b_data + fd->sc_skip; 1419 fdc->sc_tc = fd->sc_nbytes; 1420 1421 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1422 FDREG77_DRS, type->rate); 1423 #ifdef FD_DEBUG 1424 if (fdc_debug > 1) 1425 printf("fdcstate: doio: %s drive %d " 1426 "track %d head %d sec %d nblks %d\n", 1427 finfo ? "format" : 1428 (read ? "read" : "write"), 1429 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1430 #endif 1431 fdc->sc_state = IOCOMPLETE; 1432 fdc->sc_itask = FDC_ITASK_DMA; 1433 fdc->sc_nstat = 0; 1434 1435 disk_busy(&fd->sc_dk); 1436 1437 /* allow 3 seconds for operation */ 1438 timeout_add_sec(&fdc->fdctimeout_to, 3); 1439 1440 if (finfo != NULL) { 1441 /* formatting */ 1442 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1443 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1444 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1445 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1446 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1447 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1448 } else { 1449 if (read) 1450 FDC_WRFIFO(fdc, NE7CMD_READ); 1451 else 1452 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1453 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1454 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1455 FDC_WRFIFO(fdc, head); 1456 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1457 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1458 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1459 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1460 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1461 } 1462 1463 return (1); /* will return later */ 1464 1465 case SEEKWAIT: 1466 timeout_del(&fdc->fdctimeout_to); 1467 fdc->sc_state = SEEKCOMPLETE; 1468 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1469 /* allow 1/50 second for heads to settle */ 1470 timeout_add_msec(&fdc->fdcpseudointr_to, 20); 1471 return (1); /* will return later */ 1472 } 1473 /*FALLTHROUGH*/ 1474 case SEEKCOMPLETE: 1475 /* no data on seek */ 1476 disk_unbusy(&fd->sc_dk, 0, 0, 0); 1477 1478 /* Make sure seek really happened. */ 1479 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1480 cyl != cylin * fd->sc_type->step) { 1481 #ifdef FD_DEBUG 1482 if (fdc_debug) 1483 fdcstatus(fdc, "seek failed"); 1484 #endif 1485 fdcretry(fdc); 1486 goto loop; 1487 } 1488 fd->sc_cylin = cylin; 1489 goto doio; 1490 1491 case IOTIMEDOUT: 1492 /* 1493 * Try to abort the I/O operation without resetting 1494 * the chip first. Poke TC and arrange to pick up 1495 * the timed out I/O command's status. 1496 */ 1497 fdc->sc_itask = FDC_ITASK_RESULT; 1498 fdc->sc_state = IOCLEANUPWAIT; 1499 fdc->sc_nstat = 0; 1500 /* 1/10 second should be enough */ 1501 timeout_add_msec(&fdc->fdctimeout_to, 100); 1502 return (1); 1503 1504 case IOCLEANUPTIMEDOUT: 1505 case SEEKTIMEDOUT: 1506 case RECALTIMEDOUT: 1507 case RESETTIMEDOUT: 1508 case DSKCHGTIMEDOUT: 1509 fdcstatus(fdc, "timeout"); 1510 1511 /* All other timeouts always roll through to a chip reset */ 1512 fdcretry(fdc); 1513 1514 /* Force reset, no matter what fdcretry() says */ 1515 fdc->sc_state = DORESET; 1516 goto loop; 1517 1518 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1519 timeout_del(&fdc->fdctimeout_to); 1520 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1521 bp->b_blkno, (bp->b_flags & B_READ)); 1522 fdcretry(fdc); 1523 goto loop; 1524 1525 case IOCOMPLETE: /* IO DONE, post-analyze */ 1526 timeout_del(&fdc->fdctimeout_to); 1527 1528 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1529 bp->b_blkno, (bp->b_flags & B_READ)); 1530 1531 if (fdc->sc_nstat != 7 || st1 != 0 || 1532 ((st0 & 0xf8) != 0 && 1533 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1534 #ifdef FD_DEBUG 1535 if (fdc_debug) { 1536 fdcstatus(fdc, 1537 bp->b_flags & B_READ 1538 ? "read failed" : "write failed"); 1539 printf("blkno %lld nblks %d nstat %d tc %d\n", 1540 (long long)fd->sc_blkno, fd->sc_nblks, 1541 fdc->sc_nstat, fdc->sc_tc); 1542 } 1543 #endif 1544 if (fdc->sc_nstat == 7 && 1545 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1546 1547 /* 1548 * Silently retry overruns if no other 1549 * error bit is set. Adjust threshold. 1550 */ 1551 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1552 if (thr < 15) { 1553 thr++; 1554 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1555 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1556 #ifdef FD_DEBUG 1557 if (fdc_debug) 1558 printf("fdc: %d -> threshold\n", thr); 1559 #endif 1560 fdconf(fdc); 1561 fdc->sc_overruns = 0; 1562 } 1563 if (++fdc->sc_overruns < 3) { 1564 fdc->sc_state = DOIO; 1565 goto loop; 1566 } 1567 } 1568 fdcretry(fdc); 1569 goto loop; 1570 } 1571 if (fdc->sc_errors) { 1572 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1573 fd->sc_skip / FD_BSIZE(fd), 1574 (struct disklabel *)NULL); 1575 printf("\n"); 1576 fdc->sc_errors = 0; 1577 } else { 1578 if (--fdc->sc_overruns < -20) { 1579 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1580 if (thr > 0) { 1581 thr--; 1582 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1583 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1584 #ifdef FD_DEBUG 1585 if (fdc_debug) 1586 printf("fdc: %d -> threshold\n", thr); 1587 #endif 1588 fdconf(fdc); 1589 } 1590 fdc->sc_overruns = 0; 1591 } 1592 } 1593 fd->sc_blkno += fd->sc_nblks; 1594 fd->sc_skip += fd->sc_nbytes; 1595 fd->sc_bcount -= fd->sc_nbytes; 1596 bp->b_resid -= fd->sc_nbytes; 1597 if (finfo == NULL && fd->sc_bcount > 0) { 1598 cylin = fd->sc_blkno / fd->sc_type->seccyl; 1599 goto doseek; 1600 } 1601 fdfinish(fd, bp); 1602 goto loop; 1603 1604 case DORESET: 1605 /* try a reset, keep motor on */ 1606 fd_set_motor(fdc); 1607 delay(100); 1608 fdc->sc_nstat = 0; 1609 fdc->sc_itask = FDC_ITASK_SENSEI; 1610 fdc->sc_state = RESETCOMPLETE; 1611 timeout_add_msec(&fdc->fdctimeout_to, 500); 1612 fdc_reset(fdc); 1613 return (1); /* will return later */ 1614 1615 case RESETCOMPLETE: 1616 timeout_del(&fdc->fdctimeout_to); 1617 fdconf(fdc); 1618 1619 /* FALLTHROUGH */ 1620 case DORECAL: 1621 fdc->sc_state = RECALWAIT; 1622 fdc->sc_itask = FDC_ITASK_SENSEI; 1623 fdc->sc_nstat = 0; 1624 timeout_add_sec(&fdc->fdctimeout_to, 5); 1625 /* recalibrate function */ 1626 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1627 FDC_WRFIFO(fdc, fd->sc_drive); 1628 return (1); /* will return later */ 1629 1630 case RECALWAIT: 1631 timeout_del(&fdc->fdctimeout_to); 1632 fdc->sc_state = RECALCOMPLETE; 1633 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1634 /* allow 1/30 second for heads to settle */ 1635 timeout_add_msec(&fdc->fdcpseudointr_to, 1000 / 30); 1636 return (1); /* will return later */ 1637 } 1638 1639 case RECALCOMPLETE: 1640 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1641 #ifdef FD_DEBUG 1642 if (fdc_debug) 1643 fdcstatus(fdc, "recalibrate failed"); 1644 #endif 1645 fdcretry(fdc); 1646 goto loop; 1647 } 1648 fd->sc_cylin = 0; 1649 goto doseek; 1650 1651 case MOTORWAIT: 1652 if (fd->sc_flags & FD_MOTOR_WAIT) 1653 return (1); /* time's not up yet */ 1654 goto doseek; 1655 1656 default: 1657 fdcstatus(fdc, "stray interrupt"); 1658 return (1); 1659 } 1660 #ifdef DIAGNOSTIC 1661 panic("fdcintr: impossible"); 1662 #endif 1663 1664 xxx: 1665 /* 1666 * We get here if the chip locks up in FDC_WRFIFO() 1667 * Cancel any operation and schedule a reset 1668 */ 1669 timeout_del(&fdc->fdctimeout_to); 1670 fdcretry(fdc); 1671 fdc->sc_state = DORESET; 1672 goto loop; 1673 1674 #undef st0 1675 #undef st1 1676 #undef cyl 1677 } 1678 1679 void 1680 fdcretry(struct fdc_softc *fdc) 1681 { 1682 struct fd_softc *fd; 1683 struct buf *bp; 1684 int error = EIO; 1685 1686 fd = TAILQ_FIRST(&fdc->sc_drives); 1687 bp = fd->sc_bp; 1688 1689 fdc->sc_overruns = 0; 1690 if (fd->sc_opts & FDOPT_NORETRY) 1691 goto fail; 1692 1693 switch (fdc->sc_errors) { 1694 case 0: 1695 if (fdc->sc_nstat == 7 && 1696 (fdc->sc_status[0] & 0xd8) == 0x40 && 1697 (fdc->sc_status[1] & 0x2) == 0x2) { 1698 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1699 error = EROFS; 1700 goto failsilent; 1701 } 1702 /* try again */ 1703 fdc->sc_state = 1704 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1705 break; 1706 1707 case 1: case 2: case 3: 1708 /* didn't work; try recalibrating */ 1709 fdc->sc_state = DORECAL; 1710 break; 1711 1712 case 4: 1713 if (fdc->sc_nstat == 7 && 1714 fdc->sc_status[0] == 0 && 1715 fdc->sc_status[1] == 0 && 1716 fdc->sc_status[2] == 0) { 1717 /* 1718 * We've retried a few times and we've got 1719 * valid status and all three status bytes 1720 * are zero. Assume this condition is the 1721 * result of no disk loaded into the drive. 1722 */ 1723 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1724 error = ENODEV; 1725 goto failsilent; 1726 } 1727 1728 /* still no go; reset the bastard */ 1729 fdc->sc_state = DORESET; 1730 break; 1731 1732 default: 1733 fail: 1734 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1735 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1736 fd->sc_skip / FD_BSIZE(fd), 1737 (struct disklabel *)NULL); 1738 printf("\n"); 1739 fdcstatus(fdc, "controller status"); 1740 } 1741 1742 failsilent: 1743 bp->b_flags |= B_ERROR; 1744 bp->b_error = error; 1745 bp->b_resid = bp->b_bcount; 1746 fdfinish(fd, bp); 1747 } 1748 fdc->sc_errors++; 1749 } 1750 1751 daddr_t 1752 fdsize(dev_t dev) 1753 { 1754 1755 /* Swapping to floppies would not make sense. */ 1756 return (-1); 1757 } 1758 1759 int 1760 fddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 1761 { 1762 1763 /* Not implemented. */ 1764 return (EINVAL); 1765 } 1766 1767 int 1768 fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 1769 { 1770 struct fd_softc *fd; 1771 struct fdc_softc *fdc; 1772 struct disklabel *lp; 1773 int unit; 1774 int error; 1775 #ifdef FD_DEBUG 1776 int i; 1777 #endif 1778 1779 unit = FDUNIT(dev); 1780 if (unit >= fd_cd.cd_ndevs) 1781 return (ENXIO); 1782 1783 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1784 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1785 1786 switch (cmd) { 1787 case DIOCRLDINFO: 1788 lp = malloc(sizeof(*lp), M_TEMP, M_WAITOK); 1789 fdgetdisklabel(dev, fd, lp, 0); 1790 bcopy(lp, fd->sc_dk.dk_label, sizeof(*lp)); 1791 free(lp, M_TEMP, 0); 1792 return 0; 1793 1794 case DIOCGPDINFO: 1795 fdgetdisklabel(dev, fd, (struct disklabel *)addr, 1); 1796 return 0; 1797 1798 case DIOCGDINFO: 1799 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1800 return 0; 1801 1802 case DIOCGPART: 1803 ((struct partinfo *)addr)->disklab = fd->sc_dk.dk_label; 1804 ((struct partinfo *)addr)->part = 1805 &fd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1806 return 0; 1807 1808 case DIOCWDINFO: 1809 case DIOCSDINFO: 1810 if ((flag & FWRITE) == 0) 1811 return (EBADF); 1812 1813 error = setdisklabel(fd->sc_dk.dk_label, 1814 (struct disklabel *)addr, 0); 1815 if (error == 0) { 1816 if (cmd == DIOCWDINFO) 1817 error = writedisklabel(DISKLABELDEV(dev), 1818 fdstrategy, fd->sc_dk.dk_label); 1819 } 1820 return (error); 1821 1822 case DIOCLOCK: 1823 /* 1824 * Nothing to do here, really. 1825 */ 1826 return (0); 1827 1828 case MTIOCTOP: 1829 if (((struct mtop *)addr)->mt_op != MTOFFL) 1830 return (EIO); 1831 /* FALLTHROUGH */ 1832 case DIOCEJECT: 1833 if (fdc->sc_flags & FDC_NOEJECT) 1834 return (ENODEV); 1835 fd_do_eject(fd); 1836 return (0); 1837 1838 case FD_FORM: 1839 if ((flag & FWRITE) == 0) 1840 return (EBADF); /* must be opened for writing */ 1841 else if (((struct fd_formb *)addr)->format_version != 1842 FD_FORMAT_VERSION) 1843 return (EINVAL);/* wrong version of formatting prog */ 1844 else 1845 return fdformat(dev, (struct fd_formb *)addr, p); 1846 break; 1847 1848 case FD_GTYPE: /* get drive options */ 1849 *(struct fd_type *)addr = *fd->sc_type; 1850 return (0); 1851 1852 case FD_GOPTS: /* get drive options */ 1853 *(int *)addr = fd->sc_opts; 1854 return (0); 1855 1856 case FD_SOPTS: /* set drive options */ 1857 fd->sc_opts = *(int *)addr; 1858 return (0); 1859 1860 #ifdef FD_DEBUG 1861 case _IO('f', 100): 1862 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 1863 fdcresult(fdc); 1864 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 1865 for (i = 0; i < fdc->sc_nstat; i++) 1866 printf(" 0x%x", fdc->sc_status[i]); 1867 printf(">\n"); 1868 return (0); 1869 1870 case _IOW('f', 101, int): 1871 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1872 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 1873 fdconf(fdc); 1874 return (0); 1875 1876 case _IO('f', 102): 1877 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1878 fdcresult(fdc); 1879 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 1880 for (i=0; i< fdc->sc_nstat; i++) 1881 printf(" 0x%x", fdc->sc_status[i]); 1882 printf(">\n"); 1883 return (0); 1884 #endif 1885 default: 1886 return (ENOTTY); 1887 } 1888 } 1889 1890 int 1891 fdformat(dev_t dev, struct fd_formb *finfo, struct proc *p) 1892 { 1893 int rv = 0; 1894 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1895 struct fd_type *type = fd->sc_type; 1896 struct buf *bp; 1897 1898 /* set up a buffer header for fdstrategy() */ 1899 bp = malloc(sizeof(*bp), M_TEMP, M_NOWAIT | M_ZERO); 1900 if (bp == NULL) 1901 return (ENOBUFS); 1902 1903 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT | B_RAW; 1904 bp->b_proc = p; 1905 bp->b_dev = dev; 1906 1907 /* 1908 * Calculate a fake blkno, so fdstrategy() would initiate a 1909 * seek to the requested cylinder. 1910 */ 1911 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 1912 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 1913 / DEV_BSIZE; 1914 1915 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 1916 bp->b_data = (caddr_t)finfo; 1917 1918 #ifdef FD_DEBUG 1919 if (fdc_debug) { 1920 int i; 1921 1922 printf("fdformat: blkno 0x%llx count %ld\n", 1923 (unsigned long long)bp->b_blkno, bp->b_bcount); 1924 1925 printf("\tcyl:\t%d\n", finfo->cyl); 1926 printf("\thead:\t%d\n", finfo->head); 1927 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 1928 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 1929 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 1930 printf("\ttrack data:"); 1931 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 1932 printf(" [c%d h%d s%d]", 1933 finfo->fd_formb_cylno(i), 1934 finfo->fd_formb_headno(i), 1935 finfo->fd_formb_secno(i) ); 1936 if (finfo->fd_formb_secsize(i) != 2) 1937 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 1938 } 1939 printf("\n"); 1940 } 1941 #endif 1942 1943 /* now do the format */ 1944 fdstrategy(bp); 1945 1946 /* ...and wait for it to complete */ 1947 rv = biowait(bp); 1948 free(bp, M_TEMP, 0); 1949 return (rv); 1950 } 1951 1952 int 1953 fdgetdisklabel(dev_t dev, struct fd_softc *fd, struct disklabel *lp, 1954 int spoofonly) 1955 { 1956 bzero(lp, sizeof(struct disklabel)); 1957 1958 lp->d_type = DTYPE_FLOPPY; 1959 lp->d_secsize = FD_BSIZE(fd); 1960 lp->d_secpercyl = fd->sc_type->seccyl; 1961 lp->d_nsectors = fd->sc_type->sectrac; 1962 lp->d_ncylinders = fd->sc_type->tracks; 1963 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 1964 DL_SETDSIZE(lp, (u_int64_t)lp->d_secpercyl * lp->d_ncylinders); 1965 1966 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 1967 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 1968 lp->d_version = 1; 1969 1970 lp->d_magic = DISKMAGIC; 1971 lp->d_magic2 = DISKMAGIC; 1972 lp->d_checksum = dkcksum(lp); 1973 1974 /* 1975 * Call the generic disklabel extraction routine. If there's 1976 * not a label there, fake it. 1977 */ 1978 return readdisklabel(DISKLABELDEV(dev), fdstrategy, lp, spoofonly); 1979 } 1980 1981 void 1982 fd_do_eject(struct fd_softc *fd) 1983 { 1984 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 1985 bus_space_tag_t t = fdc->sc_bustag; 1986 bus_space_handle_t h = fdc->sc_handle; 1987 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 1988 1989 bus_space_write_1(t, h, FDREG77_DOR, dor | FDO_EJ); 1990 delay(10); 1991 bus_space_write_1(t, h, FDREG77_DOR, FDO_FRST | FDO_DS); 1992 }
Cache object: 15ed94a711f8d0b31312a39f2f353cc9
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