fd.c revision 1.150.12.3
1 /* $NetBSD: fd.c,v 1.150.12.3 2017/12/03 11:36:43 jdolecek 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 1.150.12.3 2017/12/03 11:36:43 jdolecek 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 device_t sc_dev; 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(device_t, cfdata_t, void *); 216 int fdcmatch_obio(device_t, cfdata_t, void *); 217 void fdcattach_mainbus(device_t, device_t, void *); 218 void fdcattach_obio(device_t, device_t, void *); 219 220 int fdcattach(struct fdc_softc *, int); 221 222 CFATTACH_DECL_NEW(fdc_mainbus, sizeof(struct fdc_softc), 223 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL); 224 225 CFATTACH_DECL_NEW(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 device_t 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(device_t, cfdata_t, void *); 293 void fdattach(device_t, device_t, void *); 294 bool fdshutdown(device_t, int); 295 bool fdsuspend(device_t, const pmf_qual_t *); 296 297 CFATTACH_DECL_NEW(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 .d_open = fdopen, 311 .d_close = fdclose, 312 .d_strategy = fdstrategy, 313 .d_ioctl = fdioctl, 314 .d_dump = nodump, 315 .d_psize = nosize, 316 .d_discard = nodiscard, 317 .d_flag = D_DISK 318 }; 319 320 const struct cdevsw fd_cdevsw = { 321 .d_open = fdopen, 322 .d_close = fdclose, 323 .d_read = fdread, 324 .d_write = fdwrite, 325 .d_ioctl = fdioctl, 326 .d_stop = nostop, 327 .d_tty = notty, 328 .d_poll = nopoll, 329 .d_mmap = nommap, 330 .d_kqfilter = nokqfilter, 331 .d_discard = nodiscard, 332 .d_flag = D_DISK 333 }; 334 335 void fdgetdisklabel(dev_t); 336 int fd_get_parms(struct fd_softc *); 337 void fdstart(struct fd_softc *); 338 int fdprint(void *, const char *); 339 340 struct dkdriver fddkdriver = { 341 .d_strategy = fdstrategy 342 }; 343 344 struct fd_type *fd_nvtotype(char *, int, int); 345 void fd_set_motor(struct fdc_softc *); 346 void fd_motor_off(void *); 347 void fd_motor_on(void *); 348 int fdcresult(struct fdc_softc *); 349 int fdc_wrfifo(struct fdc_softc *, uint8_t); 350 void fdcstart(struct fdc_softc *); 351 void fdcstatus(struct fdc_softc *, const char *); 352 void fdc_reset(struct fdc_softc *); 353 int fdc_diskchange(struct fdc_softc *); 354 void fdctimeout(void *); 355 void fdcpseudointr(void *); 356 int fdc_c_hwintr(void *); 357 void fdchwintr(void); 358 void fdcswintr(void *); 359 int fdcstate(struct fdc_softc *); 360 void fdcretry(struct fdc_softc *); 361 void fdfinish(struct fd_softc *, struct buf *); 362 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 363 void fd_do_eject(struct fd_softc *); 364 void fd_mountroot_hook(device_t); 365 static int fdconf(struct fdc_softc *); 366 static void establish_chip_type( 367 struct fdc_softc *, 368 bus_space_tag_t, 369 bus_addr_t, 370 bus_size_t, 371 bus_space_handle_t); 372 373 #ifdef MEMORY_DISK_HOOKS 374 int fd_read_md_image(size_t *, void **); 375 #endif 376 377 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 378 379 int 380 fdcmatch_mainbus(device_t parent, cfdata_t match, void *aux) 381 { 382 struct mainbus_attach_args *ma = aux; 383 384 /* 385 * Floppy controller is on mainbus on sun4c. 386 */ 387 if (!CPU_ISSUN4C) 388 return (0); 389 390 /* sun4c PROMs call the controller "fd" */ 391 if (strcmp("fd", ma->ma_name) != 0) 392 return (0); 393 394 return (bus_space_probe(ma->ma_bustag, 395 ma->ma_paddr, 396 1, /* probe size */ 397 0, /* offset */ 398 0, /* flags */ 399 NULL, NULL)); 400 } 401 402 int 403 fdcmatch_obio(device_t parent, cfdata_t match, void *aux) 404 { 405 union obio_attach_args *uoba = aux; 406 struct sbus_attach_args *sa; 407 408 /* 409 * Floppy controller is on obio on sun4m. 410 */ 411 if (uoba->uoba_isobio4 != 0) 412 return (0); 413 414 sa = &uoba->uoba_sbus; 415 416 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 417 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 418 return (0); 419 420 return (bus_space_probe(sa->sa_bustag, 421 sbus_bus_addr(sa->sa_bustag, 422 sa->sa_slot, sa->sa_offset), 423 1, /* probe size */ 424 0, /* offset */ 425 0, /* flags */ 426 NULL, NULL)); 427 } 428 429 static void 430 establish_chip_type(struct fdc_softc *fdc, 431 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 432 bus_space_handle_t handle) 433 { 434 uint8_t v; 435 436 /* 437 * This hack from Chris Torek: apparently DOR really 438 * addresses MSR/DRS on a 82072. 439 * We used to rely on the VERSION command to tell the 440 * difference (which did not work). 441 */ 442 443 /* First, check the size of the register bank */ 444 if (size < 8) 445 /* It isn't a 82077 */ 446 return; 447 448 /* Then probe the DOR register offset */ 449 if (bus_space_probe(tag, addr, 450 1, /* probe size */ 451 FDREG77_DOR, /* offset */ 452 0, /* flags */ 453 NULL, NULL) == 0) { 454 455 /* It isn't a 82077 */ 456 return; 457 } 458 459 v = bus_space_read_1(tag, handle, FDREG77_DOR); 460 if (v == NE7_RQM) { 461 /* 462 * Value in DOR looks like it's really MSR 463 */ 464 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 465 v = bus_space_read_1(tag, handle, FDREG77_DOR); 466 if (v == NE7_RQM) { 467 /* 468 * The value in the DOR didn't stick; 469 * it isn't a 82077 470 */ 471 return; 472 } 473 } 474 475 fdc->sc_flags |= FDC_82077; 476 } 477 478 /* 479 * Arguments passed between fdcattach and fdprobe. 480 */ 481 struct fdc_attach_args { 482 int fa_drive; 483 struct fd_type *fa_deftype; 484 }; 485 486 /* 487 * Print the location of a disk drive (called just before attaching the 488 * the drive). If `fdc' is not NULL, the drive was found but was not 489 * in the system config file; print the drive name as well. 490 * Return QUIET (config_find ignores this if the device was configured) to 491 * avoid printing `fdN not configured' messages. 492 */ 493 int 494 fdprint(void *aux, const char *fdc) 495 { 496 register struct fdc_attach_args *fa = aux; 497 498 if (!fdc) 499 aprint_normal(" drive %d", fa->fa_drive); 500 return (QUIET); 501 } 502 503 /* 504 * Configure several parameters and features on the FDC. 505 * Return 0 on success. 506 */ 507 static int 508 fdconf(struct fdc_softc *fdc) 509 { 510 int vroom; 511 512 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 513 return (-1); 514 515 /* 516 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 517 * the PROM thinks is appropriate. 518 */ 519 if ((vroom = fdc->sc_status[7]) == 0) 520 vroom = 0x64; 521 522 /* Configure controller to use FIFO and Implied Seek */ 523 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 524 return (-1); 525 if (fdc_wrfifo(fdc, vroom) != 0) 526 return (-1); 527 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 528 return (-1); 529 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 530 return (-1); 531 /* No result phase for the NE7CMD_CFG command */ 532 533 if ((fdc->sc_flags & FDC_82077) != 0) { 534 /* Lock configuration across soft resets. */ 535 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 536 fdcresult(fdc) != 1) { 537 #ifdef DEBUG 538 printf("fdconf: CFGLOCK failed"); 539 #endif 540 return (-1); 541 } 542 } 543 544 return (0); 545 #if 0 546 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 547 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 548 if (fdc_debug) 549 printf("[version cmd]"); 550 } 551 #endif 552 } 553 554 void 555 fdcattach_mainbus(device_t parent, device_t self, void *aux) 556 { 557 struct fdc_softc *fdc = device_private(self); 558 struct mainbus_attach_args *ma = aux; 559 560 fdc->sc_dev = self; 561 fdc->sc_bustag = ma->ma_bustag; 562 563 if (bus_space_map( 564 ma->ma_bustag, 565 ma->ma_paddr, 566 ma->ma_size, 567 BUS_SPACE_MAP_LINEAR, 568 &fdc->sc_handle) != 0) { 569 printf("%s: cannot map registers\n", device_xname(self)); 570 return; 571 } 572 573 establish_chip_type(fdc, 574 ma->ma_bustag, 575 ma->ma_paddr, 576 ma->ma_size, 577 fdc->sc_handle); 578 579 if (fdcattach(fdc, ma->ma_pri) != 0) 580 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 581 } 582 583 void 584 fdcattach_obio(device_t parent, device_t self, void *aux) 585 { 586 struct fdc_softc *fdc = device_private(self); 587 union obio_attach_args *uoba = aux; 588 struct sbus_attach_args *sa = &uoba->uoba_sbus; 589 590 if (sa->sa_nintr == 0) { 591 printf(": no interrupt line configured\n"); 592 return; 593 } 594 595 fdc->sc_dev = self; 596 fdc->sc_bustag = sa->sa_bustag; 597 598 if (sbus_bus_map(sa->sa_bustag, 599 sa->sa_slot, sa->sa_offset, sa->sa_size, 600 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 601 printf("%s: cannot map control registers\n", 602 device_xname(self)); 603 return; 604 } 605 606 establish_chip_type(fdc, 607 sa->sa_bustag, 608 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 609 sa->sa_size, 610 fdc->sc_handle); 611 612 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 613 printf(": no drives attached\n"); 614 return; 615 } 616 617 if (fdcattach(fdc, sa->sa_pri) != 0) 618 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 619 } 620 621 int 622 fdcattach(struct fdc_softc *fdc, int pri) 623 { 624 struct fdc_attach_args fa; 625 int drive_attached; 626 char code; 627 628 callout_init(&fdc->sc_timo_ch, 0); 629 callout_init(&fdc->sc_intr_ch, 0); 630 631 fdc->sc_state = DEVIDLE; 632 fdc->sc_itask = FDC_ITASK_NONE; 633 fdc->sc_istatus = FDC_ISTATUS_NONE; 634 fdc->sc_flags |= FDC_EIS; 635 TAILQ_INIT(&fdc->sc_drives); 636 637 if ((fdc->sc_flags & FDC_82077) != 0) { 638 fdc->sc_reg_msr = FDREG77_MSR; 639 fdc->sc_reg_fifo = FDREG77_FIFO; 640 fdc->sc_reg_dor = FDREG77_DOR; 641 fdc->sc_reg_dir = FDREG77_DIR; 642 code = '7'; 643 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 644 } else { 645 fdc->sc_reg_msr = FDREG72_MSR; 646 fdc->sc_reg_fifo = FDREG72_FIFO; 647 fdc->sc_reg_dor = 0; 648 code = '2'; 649 } 650 651 /* 652 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 653 * Note: CFG_EFIFO is active-low, initial threshold value: 8 654 */ 655 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 656 if (fdconf(fdc) != 0) { 657 printf(": no drives attached\n"); 658 return (-1); 659 } 660 661 fdciop = &fdc->sc_io; 662 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 663 fdc_c_hwintr, fdc, 664 #ifdef notyet /* XXX bsd_fdintr.s needs to be fixed for MI softint(9) */ 665 fdchwintr 666 #else 667 NULL 668 #endif 669 ) == NULL) { 670 printf("\n%s: cannot register interrupt handler\n", 671 device_xname(fdc->sc_dev)); 672 return (-1); 673 } 674 675 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 676 if (fdc->sc_sicookie == NULL) { 677 printf("\n%s: cannot register soft interrupt handler\n", 678 device_xname(fdc->sc_dev)); 679 return (-1); 680 } 681 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 682 683 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 684 device_xname(fdc->sc_dev), "intr"); 685 686 /* physical limit: four drives per controller. */ 687 drive_attached = 0; 688 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 689 fa.fa_deftype = NULL; /* unknown */ 690 fa.fa_deftype = &fd_types[0]; /* XXX */ 691 if (config_found(fdc->sc_dev, (void *)&fa, fdprint) != NULL) 692 drive_attached = 1; 693 } 694 695 if (drive_attached == 0) { 696 /* XXX - dis-establish interrupts here */ 697 /* return (-1); */ 698 } 699 700 return (0); 701 } 702 703 int 704 fdmatch(device_t parent, cfdata_t match, void *aux) 705 { 706 struct fdc_softc *fdc = device_private(parent); 707 bus_space_tag_t t = fdc->sc_bustag; 708 bus_space_handle_t h = fdc->sc_handle; 709 struct fdc_attach_args *fa = aux; 710 int drive = fa->fa_drive; 711 int n, ok; 712 713 if (drive > 0) 714 /* XXX - for now, punt on more than one drive */ 715 return (0); 716 717 if ((fdc->sc_flags & FDC_82077) != 0) { 718 /* select drive and turn on motor */ 719 bus_space_write_1(t, h, fdc->sc_reg_dor, 720 drive | FDO_FRST | FDO_MOEN(drive)); 721 /* wait for motor to spin up */ 722 delay(250000); 723 } else { 724 auxregbisc(AUXIO4C_FDS, 0); 725 } 726 fdc->sc_nstat = 0; 727 fdc_wrfifo(fdc, NE7CMD_RECAL); 728 fdc_wrfifo(fdc, drive); 729 730 /* Wait for recalibration to complete */ 731 for (n = 0; n < 10000; n++) { 732 uint8_t v; 733 734 delay(1000); 735 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 736 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 737 /* wait a bit longer till device *really* is ready */ 738 delay(100000); 739 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 740 break; 741 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 742 /* 743 * Got `invalid command'; we interpret it 744 * to mean that the re-calibrate hasn't in 745 * fact finished yet 746 */ 747 continue; 748 break; 749 } 750 } 751 n = fdc->sc_nstat; 752 #ifdef FD_DEBUG 753 if (fdc_debug) { 754 int i; 755 printf("fdprobe: %d stati:", n); 756 for (i = 0; i < n; i++) 757 printf(" 0x%x", fdc->sc_status[i]); 758 printf("\n"); 759 } 760 #endif 761 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 762 763 /* turn off motor */ 764 if ((fdc->sc_flags & FDC_82077) != 0) { 765 /* deselect drive and turn motor off */ 766 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 767 } else { 768 auxregbisc(0, AUXIO4C_FDS); 769 } 770 771 return (ok); 772 } 773 774 /* 775 * Controller is working, and drive responded. Attach it. 776 */ 777 void 778 fdattach(device_t parent, device_t self, void *aux) 779 { 780 struct fdc_softc *fdc = device_private(parent); 781 struct fd_softc *fd = device_private(self); 782 struct fdc_attach_args *fa = aux; 783 struct fd_type *type = fa->fa_deftype; 784 int drive = fa->fa_drive; 785 786 fd->sc_dv = self; 787 788 callout_init(&fd->sc_motoron_ch, 0); 789 callout_init(&fd->sc_motoroff_ch, 0); 790 791 /* XXX Allow `flags' to override device type? */ 792 793 if (type) 794 printf(": %s %d cyl, %d head, %d sec\n", type->name, 795 type->cylinders, type->heads, type->sectrac); 796 else 797 printf(": density unknown\n"); 798 799 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 800 fd->sc_cylin = -1; 801 fd->sc_drive = drive; 802 fd->sc_deftype = type; 803 fdc->sc_fd[drive] = fd; 804 805 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 806 fdc_wrfifo(fdc, type->steprate); 807 /* XXX head load time == 6ms */ 808 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 809 810 /* 811 * Initialize and attach the disk structure. 812 */ 813 disk_init(&fd->sc_dk, device_xname(fd->sc_dv), &fddkdriver); 814 disk_attach(&fd->sc_dk); 815 816 /* 817 * Establish a mountroot_hook anyway in case we booted 818 * with RB_ASKNAME and get selected as the boot device. 819 */ 820 mountroothook_establish(fd_mountroot_hook, fd->sc_dv); 821 822 /* Make sure the drive motor gets turned off at shutdown time. */ 823 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 824 aprint_error_dev(self, "couldn't establish power handler\n"); 825 } 826 827 bool fdshutdown(device_t self, int how) 828 { 829 struct fd_softc *fd = device_private(self); 830 831 fd_motor_off(fd); 832 return true; 833 } 834 835 bool fdsuspend(device_t self, const pmf_qual_t *qual) 836 { 837 838 return fdshutdown(self, boothowto); 839 } 840 841 842 inline struct fd_type * 843 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 844 { 845 int type = FDTYPE(dev); 846 847 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 848 return (NULL); 849 return (type ? &fd_types[type - 1] : fd->sc_deftype); 850 } 851 852 void 853 fdstrategy(struct buf *bp) 854 { 855 struct fd_softc *fd; 856 int unit = FDUNIT(bp->b_dev); 857 int sz; 858 int s; 859 860 /* Valid unit, controller, and request? */ 861 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 862 bp->b_blkno < 0 || 863 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 864 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 865 (bp->b_flags & B_FORMAT) == 0)) { 866 bp->b_error = EINVAL; 867 goto done; 868 } 869 870 /* If it's a null transfer, return immediately. */ 871 if (bp->b_bcount == 0) 872 goto done; 873 874 sz = howmany(bp->b_bcount, DEV_BSIZE); 875 876 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 877 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 878 - bp->b_blkno; 879 if (sz == 0) { 880 /* If exactly at end of disk, return EOF. */ 881 bp->b_resid = bp->b_bcount; 882 goto done; 883 } 884 if (sz < 0) { 885 /* If past end of disk, return EINVAL. */ 886 bp->b_error = EINVAL; 887 goto done; 888 } 889 /* Otherwise, truncate request. */ 890 bp->b_bcount = sz << DEV_BSHIFT; 891 } 892 893 bp->b_rawblkno = bp->b_blkno; 894 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 895 (FD_BSIZE(fd) * fd->sc_type->seccyl); 896 897 #ifdef FD_DEBUG 898 if (fdc_debug > 1) 899 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 900 (long long)bp->b_blkno, bp->b_bcount, 901 (long long)fd->sc_blkno, bp->b_cylinder); 902 #endif 903 904 /* Queue transfer on drive, activate drive and controller if idle. */ 905 s = splbio(); 906 bufq_put(fd->sc_q, bp); 907 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 908 if (fd->sc_active == 0) 909 fdstart(fd); 910 #ifdef DIAGNOSTIC 911 else { 912 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 913 if (fdc->sc_state == DEVIDLE) { 914 printf("fdstrategy: controller inactive\n"); 915 fdcstart(fdc); 916 } 917 } 918 #endif 919 splx(s); 920 return; 921 922 done: 923 /* Toss transfer; we're done early. */ 924 biodone(bp); 925 } 926 927 void 928 fdstart(struct fd_softc *fd) 929 { 930 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 931 int active = fdc->sc_drives.tqh_first != 0; 932 933 /* Link into controller queue. */ 934 fd->sc_active = 1; 935 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 936 937 /* If controller not already active, start it. */ 938 if (!active) 939 fdcstart(fdc); 940 } 941 942 void 943 fdfinish(struct fd_softc *fd, struct buf *bp) 944 { 945 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 946 947 /* 948 * Move this drive to the end of the queue to give others a `fair' 949 * chance. We only force a switch if N operations are completed while 950 * another drive is waiting to be serviced, since there is a long motor 951 * startup delay whenever we switch. 952 */ 953 (void)bufq_get(fd->sc_q); 954 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 955 fd->sc_ops = 0; 956 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 957 if (bufq_peek(fd->sc_q) != NULL) { 958 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 959 } else 960 fd->sc_active = 0; 961 } 962 bp->b_resid = fd->sc_bcount; 963 fd->sc_skip = 0; 964 965 biodone(bp); 966 /* turn off motor 5s from now */ 967 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 968 fdc->sc_state = DEVIDLE; 969 } 970 971 void 972 fdc_reset(struct fdc_softc *fdc) 973 { 974 bus_space_tag_t t = fdc->sc_bustag; 975 bus_space_handle_t h = fdc->sc_handle; 976 977 if ((fdc->sc_flags & FDC_82077) != 0) { 978 bus_space_write_1(t, h, fdc->sc_reg_dor, 979 FDO_FDMAEN | FDO_MOEN(0)); 980 } 981 982 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 983 delay(10); 984 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 985 986 if ((fdc->sc_flags & FDC_82077) != 0) { 987 bus_space_write_1(t, h, fdc->sc_reg_dor, 988 FDO_FRST | FDO_FDMAEN | FDO_DS); 989 } 990 #ifdef FD_DEBUG 991 if (fdc_debug) 992 printf("fdc reset\n"); 993 #endif 994 } 995 996 void 997 fd_set_motor(struct fdc_softc *fdc) 998 { 999 struct fd_softc *fd; 1000 u_char status; 1001 int n; 1002 1003 if ((fdc->sc_flags & FDC_82077) != 0) { 1004 status = FDO_FRST | FDO_FDMAEN; 1005 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1006 status |= fd->sc_drive; 1007 1008 for (n = 0; n < 4; n++) 1009 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1010 status |= FDO_MOEN(n); 1011 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1012 fdc->sc_reg_dor, status); 1013 } else { 1014 1015 for (n = 0; n < 4; n++) { 1016 if ((fd = fdc->sc_fd[n]) != NULL && 1017 (fd->sc_flags & FD_MOTOR) != 0) { 1018 auxregbisc(AUXIO4C_FDS, 0); 1019 return; 1020 } 1021 } 1022 auxregbisc(0, AUXIO4C_FDS); 1023 } 1024 } 1025 1026 void 1027 fd_motor_off(void *arg) 1028 { 1029 struct fd_softc *fd = arg; 1030 int s; 1031 1032 s = splbio(); 1033 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1034 fd_set_motor(device_private(device_parent(fd->sc_dv))); 1035 splx(s); 1036 } 1037 1038 void 1039 fd_motor_on(void *arg) 1040 { 1041 struct fd_softc *fd = arg; 1042 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 1043 int s; 1044 1045 s = splbio(); 1046 fd->sc_flags &= ~FD_MOTOR_WAIT; 1047 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1048 (void) fdcstate(fdc); 1049 splx(s); 1050 } 1051 1052 /* 1053 * Get status bytes off the FDC after a command has finished 1054 * Returns the number of status bytes read; -1 on error. 1055 * The return value is also stored in `sc_nstat'. 1056 */ 1057 int 1058 fdcresult(struct fdc_softc *fdc) 1059 { 1060 bus_space_tag_t t = fdc->sc_bustag; 1061 bus_space_handle_t h = fdc->sc_handle; 1062 int j, n = 0; 1063 1064 for (j = 10000; j; j--) { 1065 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1066 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1067 if (v == NE7_RQM) 1068 return (fdc->sc_nstat = n); 1069 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1070 if (n >= sizeof(fdc->sc_status)) { 1071 log(LOG_ERR, "fdcresult: overrun\n"); 1072 return (-1); 1073 } 1074 fdc->sc_status[n++] = 1075 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1076 } else 1077 delay(1); 1078 } 1079 1080 log(LOG_ERR, "fdcresult: timeout\n"); 1081 return (fdc->sc_nstat = -1); 1082 } 1083 1084 /* 1085 * Write a command byte to the FDC. 1086 * Returns 0 on success; -1 on failure (i.e. timeout) 1087 */ 1088 int 1089 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1090 { 1091 bus_space_tag_t t = fdc->sc_bustag; 1092 bus_space_handle_t h = fdc->sc_handle; 1093 int i; 1094 1095 for (i = 100000; i-- > 0;) { 1096 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1097 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1098 /* The chip is ready */ 1099 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1100 return (0); 1101 } 1102 delay(1); 1103 } 1104 return (-1); 1105 } 1106 1107 int 1108 fdc_diskchange(struct fdc_softc *fdc) 1109 { 1110 1111 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1112 bus_space_tag_t t = fdc->sc_bustag; 1113 bus_space_handle_t h = fdc->sc_handle; 1114 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1115 return ((v & FDI_DCHG) != 0); 1116 } else if (CPU_ISSUN4C) { 1117 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1118 } 1119 return (0); 1120 } 1121 1122 int 1123 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1124 { 1125 int unit, pmask; 1126 struct fd_softc *fd; 1127 struct fd_type *type; 1128 1129 unit = FDUNIT(dev); 1130 fd = device_lookup_private(&fd_cd, unit); 1131 if (fd == NULL) 1132 return (ENXIO); 1133 type = fd_dev_to_type(fd, dev); 1134 if (type == NULL) 1135 return (ENXIO); 1136 1137 if ((fd->sc_flags & FD_OPEN) != 0 && 1138 fd->sc_type != type) 1139 return (EBUSY); 1140 1141 fd->sc_type = type; 1142 fd->sc_cylin = -1; 1143 fd->sc_flags |= FD_OPEN; 1144 1145 /* 1146 * Only update the disklabel if we're not open anywhere else. 1147 */ 1148 if (fd->sc_dk.dk_openmask == 0) 1149 fdgetdisklabel(dev); 1150 1151 pmask = (1 << DISKPART(dev)); 1152 1153 switch (fmt) { 1154 case S_IFCHR: 1155 fd->sc_dk.dk_copenmask |= pmask; 1156 break; 1157 1158 case S_IFBLK: 1159 fd->sc_dk.dk_bopenmask |= pmask; 1160 break; 1161 } 1162 fd->sc_dk.dk_openmask = 1163 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1164 1165 return (0); 1166 } 1167 1168 int 1169 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1170 { 1171 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1172 int pmask = (1 << DISKPART(dev)); 1173 1174 fd->sc_flags &= ~FD_OPEN; 1175 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1176 1177 switch (fmt) { 1178 case S_IFCHR: 1179 fd->sc_dk.dk_copenmask &= ~pmask; 1180 break; 1181 1182 case S_IFBLK: 1183 fd->sc_dk.dk_bopenmask &= ~pmask; 1184 break; 1185 } 1186 fd->sc_dk.dk_openmask = 1187 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1188 1189 return (0); 1190 } 1191 1192 int 1193 fdread(dev_t dev, struct uio *uio, int flag) 1194 { 1195 1196 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1197 } 1198 1199 int 1200 fdwrite(dev_t dev, struct uio *uio, int flag) 1201 { 1202 1203 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1204 } 1205 1206 void 1207 fdcstart(struct fdc_softc *fdc) 1208 { 1209 1210 #ifdef DIAGNOSTIC 1211 /* only got here if controller's drive queue was inactive; should 1212 be in idle state */ 1213 if (fdc->sc_state != DEVIDLE) { 1214 printf("fdcstart: not idle\n"); 1215 return; 1216 } 1217 #endif 1218 (void) fdcstate(fdc); 1219 } 1220 1221 static void 1222 fdcpstatus(int n, struct fdc_softc *fdc) 1223 { 1224 char bits[64]; 1225 1226 switch (n) { 1227 case 0: 1228 printf("\n"); 1229 break; 1230 case 2: 1231 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1232 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1233 break; 1234 case 7: 1235 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1236 printf(" (st0 %s", bits); 1237 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1238 printf(" st1 %s", bits); 1239 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1240 printf(" st2 %s", bits); 1241 printf(" cyl %d head %d sec %d)\n", 1242 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1243 break; 1244 #ifdef DIAGNOSTIC 1245 default: 1246 printf("\nfdcstatus: weird size"); 1247 break; 1248 #endif 1249 } 1250 } 1251 1252 void 1253 fdcstatus(struct fdc_softc *fdc, const char *s) 1254 { 1255 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1256 int n; 1257 1258 /* Just print last status */ 1259 n = fdc->sc_nstat; 1260 1261 #if 0 1262 /* 1263 * A 82072 seems to return <invalid command> on 1264 * gratuitous Sense Interrupt commands. 1265 */ 1266 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1267 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1268 (void) fdcresult(fdc); 1269 n = 2; 1270 } 1271 #endif 1272 1273 printf("%s: %s: state %d", 1274 fd ? device_xname(fd->sc_dv) : "fdc", s, fdc->sc_state); 1275 1276 fdcpstatus(n, fdc); 1277 } 1278 1279 void 1280 fdctimeout(void *arg) 1281 { 1282 struct fdc_softc *fdc = arg; 1283 struct fd_softc *fd; 1284 int s; 1285 1286 s = splbio(); 1287 fd = fdc->sc_drives.tqh_first; 1288 if (fd == NULL) { 1289 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1290 device_xname(fdc->sc_dev), 1291 fdc->sc_state, fdc->sc_istatus); 1292 fdc->sc_state = DEVIDLE; 1293 goto out; 1294 } 1295 1296 if (bufq_peek(fd->sc_q) != NULL) 1297 fdc->sc_state++; 1298 else 1299 fdc->sc_state = DEVIDLE; 1300 1301 (void) fdcstate(fdc); 1302 out: 1303 splx(s); 1304 1305 } 1306 1307 void 1308 fdcpseudointr(void *arg) 1309 { 1310 struct fdc_softc *fdc = arg; 1311 int s; 1312 1313 /* Just ensure it has the right spl. */ 1314 s = splbio(); 1315 (void) fdcstate(fdc); 1316 splx(s); 1317 } 1318 1319 1320 /* 1321 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1322 * handler is available. Unfortunately, we have no reliable way to 1323 * determine that the interrupt really came from the floppy controller; 1324 * just hope that the other devices that share this interrupt level 1325 * can do better.. 1326 */ 1327 int 1328 fdc_c_hwintr(void *arg) 1329 { 1330 struct fdc_softc *fdc = arg; 1331 bus_space_tag_t t = fdc->sc_bustag; 1332 bus_space_handle_t h = fdc->sc_handle; 1333 1334 switch (fdc->sc_itask) { 1335 case FDC_ITASK_NONE: 1336 return (0); 1337 case FDC_ITASK_SENSEI: 1338 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1339 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1340 else 1341 fdc->sc_istatus = FDC_ISTATUS_DONE; 1342 softint_schedule(fdc->sc_sicookie); 1343 return (1); 1344 case FDC_ITASK_RESULT: 1345 if (fdcresult(fdc) == -1) 1346 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1347 else 1348 fdc->sc_istatus = FDC_ISTATUS_DONE; 1349 softint_schedule(fdc->sc_sicookie); 1350 return (1); 1351 case FDC_ITASK_DMA: 1352 /* Proceed with pseudo-DMA below */ 1353 break; 1354 default: 1355 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1356 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1357 softint_schedule(fdc->sc_sicookie); 1358 return (1); 1359 } 1360 1361 /* 1362 * Pseudo DMA in progress 1363 */ 1364 for (;;) { 1365 uint8_t msr; 1366 1367 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1368 1369 if ((msr & NE7_RQM) == 0) 1370 /* That's all this round */ 1371 break; 1372 1373 if ((msr & NE7_NDM) == 0) { 1374 /* Execution phase finished, get result. */ 1375 fdcresult(fdc); 1376 fdc->sc_istatus = FDC_ISTATUS_DONE; 1377 softint_schedule(fdc->sc_sicookie); 1378 break; 1379 } 1380 1381 if (fdc->sc_tc == 0) 1382 /* For some reason the controller wants to transfer 1383 more data then what we want to transfer. */ 1384 panic("fdc: overrun"); 1385 1386 /* Another byte can be transferred */ 1387 if ((msr & NE7_DIO) != 0) 1388 *fdc->sc_data = 1389 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1390 else 1391 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1392 *fdc->sc_data); 1393 1394 fdc->sc_data++; 1395 if (--fdc->sc_tc == 0) { 1396 FTC_FLIP; 1397 break; 1398 } 1399 } 1400 return (1); 1401 } 1402 1403 void 1404 fdcswintr(void *arg) 1405 { 1406 struct fdc_softc *fdc = arg; 1407 1408 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1409 /* This (software) interrupt is not for us */ 1410 return; 1411 1412 switch (fdc->sc_istatus) { 1413 case FDC_ISTATUS_ERROR: 1414 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1415 break; 1416 case FDC_ISTATUS_SPURIOUS: 1417 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1418 break; 1419 } 1420 1421 fdcstate(fdc); 1422 return; 1423 } 1424 1425 int 1426 fdcstate(struct fdc_softc *fdc) 1427 { 1428 1429 #define st0 fdc->sc_status[0] 1430 #define st1 fdc->sc_status[1] 1431 #define cyl fdc->sc_status[1] 1432 #define FDC_WRFIFO(fdc, c) do { \ 1433 if (fdc_wrfifo(fdc, (c))) { \ 1434 goto xxx; \ 1435 } \ 1436 } while(0) 1437 1438 struct fd_softc *fd; 1439 struct buf *bp; 1440 int read, head, sec, nblks; 1441 struct fd_type *type; 1442 struct ne7_fd_formb *finfo = NULL; 1443 1444 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1445 /* Prevent loop if the reset sequence produces errors */ 1446 if (fdc->sc_state != RESETCOMPLETE && 1447 fdc->sc_state != RECALWAIT && 1448 fdc->sc_state != RECALCOMPLETE) 1449 fdc->sc_state = DORESET; 1450 } 1451 1452 /* Clear I task/status field */ 1453 fdc->sc_istatus = FDC_ISTATUS_NONE; 1454 fdc->sc_itask = FDC_ITASK_NONE; 1455 1456 loop: 1457 /* Is there a drive for the controller to do a transfer with? */ 1458 fd = fdc->sc_drives.tqh_first; 1459 if (fd == NULL) { 1460 fdc->sc_state = DEVIDLE; 1461 return (0); 1462 } 1463 1464 /* Is there a transfer to this drive? If not, deactivate drive. */ 1465 bp = bufq_peek(fd->sc_q); 1466 if (bp == NULL) { 1467 fd->sc_ops = 0; 1468 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1469 fd->sc_active = 0; 1470 goto loop; 1471 } 1472 1473 if (bp->b_flags & B_FORMAT) 1474 finfo = (struct ne7_fd_formb *)bp->b_data; 1475 1476 switch (fdc->sc_state) { 1477 case DEVIDLE: 1478 fdc->sc_errors = 0; 1479 fd->sc_skip = 0; 1480 fd->sc_bcount = bp->b_bcount; 1481 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1482 callout_stop(&fd->sc_motoroff_ch); 1483 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1484 fdc->sc_state = MOTORWAIT; 1485 return (1); 1486 } 1487 if ((fd->sc_flags & FD_MOTOR) == 0) { 1488 /* Turn on the motor, being careful about pairing. */ 1489 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1490 if (ofd && ofd->sc_flags & FD_MOTOR) { 1491 callout_stop(&ofd->sc_motoroff_ch); 1492 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1493 } 1494 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1495 fd_set_motor(fdc); 1496 fdc->sc_state = MOTORWAIT; 1497 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1498 /* Allow .25s for motor to stabilize. */ 1499 callout_reset(&fd->sc_motoron_ch, hz / 4, 1500 fd_motor_on, fd); 1501 } else { 1502 fd->sc_flags &= ~FD_MOTOR_WAIT; 1503 goto loop; 1504 } 1505 return (1); 1506 } 1507 /* Make sure the right drive is selected. */ 1508 fd_set_motor(fdc); 1509 1510 if (fdc_diskchange(fdc)) 1511 goto dodskchg; 1512 1513 /*FALLTHROUGH*/ 1514 case DOSEEK: 1515 doseek: 1516 if ((fdc->sc_flags & FDC_EIS) && 1517 (bp->b_flags & B_FORMAT) == 0) { 1518 fd->sc_cylin = bp->b_cylinder; 1519 /* We use implied seek */ 1520 goto doio; 1521 } 1522 1523 if (fd->sc_cylin == bp->b_cylinder) 1524 goto doio; 1525 1526 fd->sc_cylin = -1; 1527 fdc->sc_state = SEEKWAIT; 1528 fdc->sc_nstat = 0; 1529 1530 iostat_seek(fd->sc_dk.dk_stats); 1531 1532 disk_busy(&fd->sc_dk); 1533 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1534 1535 /* specify command */ 1536 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1537 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1538 /* XXX head load time == 6ms */ 1539 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1540 1541 fdc->sc_itask = FDC_ITASK_SENSEI; 1542 /* seek function */ 1543 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1544 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1545 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1546 return (1); 1547 1548 case DODSKCHG: 1549 dodskchg: 1550 /* 1551 * Disk change: force a seek operation by going to cyl 1 1552 * followed by a recalibrate. 1553 */ 1554 disk_busy(&fd->sc_dk); 1555 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1556 fd->sc_cylin = -1; 1557 fdc->sc_nstat = 0; 1558 fdc->sc_state = DSKCHGWAIT; 1559 1560 fdc->sc_itask = FDC_ITASK_SENSEI; 1561 /* seek function */ 1562 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1563 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1564 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1565 return (1); 1566 1567 case DSKCHGWAIT: 1568 callout_stop(&fdc->sc_timo_ch); 1569 disk_unbusy(&fd->sc_dk, 0, 0); 1570 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1571 cyl != 1 * fd->sc_type->step) { 1572 fdcstatus(fdc, "dskchg seek failed"); 1573 fdc->sc_state = DORESET; 1574 } else 1575 fdc->sc_state = DORECAL; 1576 1577 if (fdc_diskchange(fdc)) { 1578 printf("%s: cannot clear disk change status\n", 1579 device_xname(fdc->sc_dev)); 1580 fdc->sc_state = DORESET; 1581 } 1582 goto loop; 1583 1584 case DOIO: 1585 doio: 1586 if (finfo != NULL) 1587 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1588 (char *)finfo; 1589 type = fd->sc_type; 1590 sec = fd->sc_blkno % type->seccyl; 1591 nblks = type->seccyl - sec; 1592 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1593 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1594 fd->sc_nblks = nblks; 1595 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1596 head = sec / type->sectrac; 1597 sec -= head * type->sectrac; 1598 #ifdef DIAGNOSTIC 1599 {int block; 1600 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1601 if (block != fd->sc_blkno) { 1602 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1603 #ifdef DDB 1604 Debugger(); 1605 #endif 1606 }} 1607 #endif 1608 read = bp->b_flags & B_READ; 1609 1610 /* Setup for pseudo DMA */ 1611 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1612 fdc->sc_tc = fd->sc_nbytes; 1613 1614 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1615 fdc->sc_reg_drs, type->rate); 1616 #ifdef FD_DEBUG 1617 if (fdc_debug > 1) 1618 printf("fdcstate: doio: %s drive %d " 1619 "track %d head %d sec %d nblks %d\n", 1620 finfo ? "format" : 1621 (read ? "read" : "write"), 1622 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1623 #endif 1624 fdc->sc_state = IOCOMPLETE; 1625 fdc->sc_itask = FDC_ITASK_DMA; 1626 fdc->sc_nstat = 0; 1627 1628 disk_busy(&fd->sc_dk); 1629 1630 /* allow 3 seconds for operation */ 1631 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1632 1633 if (finfo != NULL) { 1634 /* formatting */ 1635 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1636 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1637 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1638 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1639 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1640 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1641 } else { 1642 if (read) 1643 FDC_WRFIFO(fdc, NE7CMD_READ); 1644 else 1645 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1646 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1647 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1648 FDC_WRFIFO(fdc, head); 1649 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1650 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1651 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1652 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1653 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1654 } 1655 1656 return (1); /* will return later */ 1657 1658 case SEEKWAIT: 1659 callout_stop(&fdc->sc_timo_ch); 1660 fdc->sc_state = SEEKCOMPLETE; 1661 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1662 /* allow 1/50 second for heads to settle */ 1663 callout_reset(&fdc->sc_intr_ch, hz / 50, 1664 fdcpseudointr, fdc); 1665 return (1); /* will return later */ 1666 } 1667 /*FALLTHROUGH*/ 1668 case SEEKCOMPLETE: 1669 /* no data on seek */ 1670 disk_unbusy(&fd->sc_dk, 0, 0); 1671 1672 /* Make sure seek really happened. */ 1673 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1674 cyl != bp->b_cylinder * fd->sc_type->step) { 1675 #ifdef FD_DEBUG 1676 if (fdc_debug) 1677 fdcstatus(fdc, "seek failed"); 1678 #endif 1679 fdcretry(fdc); 1680 goto loop; 1681 } 1682 fd->sc_cylin = bp->b_cylinder; 1683 goto doio; 1684 1685 case IOTIMEDOUT: 1686 /* 1687 * Try to abort the I/O operation without resetting 1688 * the chip first. Poke TC and arrange to pick up 1689 * the timed out I/O command's status. 1690 */ 1691 fdc->sc_itask = FDC_ITASK_RESULT; 1692 fdc->sc_state = IOCLEANUPWAIT; 1693 fdc->sc_nstat = 0; 1694 /* 1/10 second should be enough */ 1695 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1696 FTC_FLIP; 1697 return (1); 1698 1699 case IOCLEANUPTIMEDOUT: 1700 case SEEKTIMEDOUT: 1701 case RECALTIMEDOUT: 1702 case RESETTIMEDOUT: 1703 case DSKCHGTIMEDOUT: 1704 fdcstatus(fdc, "timeout"); 1705 1706 /* All other timeouts always roll through to a chip reset */ 1707 fdcretry(fdc); 1708 1709 /* Force reset, no matter what fdcretry() says */ 1710 fdc->sc_state = DORESET; 1711 goto loop; 1712 1713 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1714 callout_stop(&fdc->sc_timo_ch); 1715 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1716 (bp->b_flags & B_READ)); 1717 fdcretry(fdc); 1718 goto loop; 1719 1720 case IOCOMPLETE: /* IO DONE, post-analyze */ 1721 callout_stop(&fdc->sc_timo_ch); 1722 1723 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1724 (bp->b_flags & B_READ)); 1725 1726 if (fdc->sc_nstat != 7 || st1 != 0 || 1727 ((st0 & 0xf8) != 0 && 1728 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1729 #ifdef FD_DEBUG 1730 if (fdc_debug) { 1731 fdcstatus(fdc, 1732 bp->b_flags & B_READ 1733 ? "read failed" : "write failed"); 1734 printf("blkno %lld nblks %d nstat %d tc %d\n", 1735 (long long)fd->sc_blkno, fd->sc_nblks, 1736 fdc->sc_nstat, fdc->sc_tc); 1737 } 1738 #endif 1739 if (fdc->sc_nstat == 7 && 1740 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1741 1742 /* 1743 * Silently retry overruns if no other 1744 * error bit is set. Adjust threshold. 1745 */ 1746 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1747 if (thr < 15) { 1748 thr++; 1749 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1750 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1751 #ifdef FD_DEBUG 1752 if (fdc_debug) 1753 printf("fdc: %d -> threshold\n", thr); 1754 #endif 1755 fdconf(fdc); 1756 fdc->sc_overruns = 0; 1757 } 1758 if (++fdc->sc_overruns < 3) { 1759 fdc->sc_state = DOIO; 1760 goto loop; 1761 } 1762 } 1763 fdcretry(fdc); 1764 goto loop; 1765 } 1766 if (fdc->sc_errors) { 1767 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1768 fd->sc_skip / FD_BSIZE(fd), 1769 (struct disklabel *)NULL); 1770 printf("\n"); 1771 fdc->sc_errors = 0; 1772 } else { 1773 if (--fdc->sc_overruns < -20) { 1774 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1775 if (thr > 0) { 1776 thr--; 1777 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1778 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1779 #ifdef FD_DEBUG 1780 if (fdc_debug) 1781 printf("fdc: %d -> threshold\n", thr); 1782 #endif 1783 fdconf(fdc); 1784 } 1785 fdc->sc_overruns = 0; 1786 } 1787 } 1788 fd->sc_blkno += fd->sc_nblks; 1789 fd->sc_skip += fd->sc_nbytes; 1790 fd->sc_bcount -= fd->sc_nbytes; 1791 if (finfo == NULL && fd->sc_bcount > 0) { 1792 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1793 goto doseek; 1794 } 1795 fdfinish(fd, bp); 1796 goto loop; 1797 1798 case DORESET: 1799 /* try a reset, keep motor on */ 1800 fd_set_motor(fdc); 1801 delay(100); 1802 fdc->sc_nstat = 0; 1803 fdc->sc_itask = FDC_ITASK_SENSEI; 1804 fdc->sc_state = RESETCOMPLETE; 1805 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1806 fdc_reset(fdc); 1807 return (1); /* will return later */ 1808 1809 case RESETCOMPLETE: 1810 callout_stop(&fdc->sc_timo_ch); 1811 fdconf(fdc); 1812 1813 /* FALLTHROUGH */ 1814 case DORECAL: 1815 fdc->sc_state = RECALWAIT; 1816 fdc->sc_itask = FDC_ITASK_SENSEI; 1817 fdc->sc_nstat = 0; 1818 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1819 /* recalibrate function */ 1820 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1821 FDC_WRFIFO(fdc, fd->sc_drive); 1822 return (1); /* will return later */ 1823 1824 case RECALWAIT: 1825 callout_stop(&fdc->sc_timo_ch); 1826 fdc->sc_state = RECALCOMPLETE; 1827 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1828 /* allow 1/30 second for heads to settle */ 1829 callout_reset(&fdc->sc_intr_ch, hz / 30, 1830 fdcpseudointr, fdc); 1831 return (1); /* will return later */ 1832 } 1833 1834 case RECALCOMPLETE: 1835 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1836 #ifdef FD_DEBUG 1837 if (fdc_debug) 1838 fdcstatus(fdc, "recalibrate failed"); 1839 #endif 1840 fdcretry(fdc); 1841 goto loop; 1842 } 1843 fd->sc_cylin = 0; 1844 goto doseek; 1845 1846 case MOTORWAIT: 1847 if (fd->sc_flags & FD_MOTOR_WAIT) 1848 return (1); /* time's not up yet */ 1849 goto doseek; 1850 1851 default: 1852 fdcstatus(fdc, "stray interrupt"); 1853 return (1); 1854 } 1855 #ifdef DIAGNOSTIC 1856 panic("fdcintr: impossible"); 1857 #endif 1858 1859 xxx: 1860 /* 1861 * We get here if the chip locks up in FDC_WRFIFO() 1862 * Cancel any operation and schedule a reset 1863 */ 1864 callout_stop(&fdc->sc_timo_ch); 1865 fdcretry(fdc); 1866 (fdc)->sc_state = DORESET; 1867 goto loop; 1868 1869 #undef st0 1870 #undef st1 1871 #undef cyl 1872 } 1873 1874 void 1875 fdcretry(struct fdc_softc *fdc) 1876 { 1877 struct fd_softc *fd; 1878 struct buf *bp; 1879 int error = EIO; 1880 1881 fd = fdc->sc_drives.tqh_first; 1882 bp = bufq_peek(fd->sc_q); 1883 1884 fdc->sc_overruns = 0; 1885 if (fd->sc_opts & FDOPT_NORETRY) 1886 goto fail; 1887 1888 switch (fdc->sc_errors) { 1889 case 0: 1890 if (fdc->sc_nstat == 7 && 1891 (fdc->sc_status[0] & 0xd8) == 0x40 && 1892 (fdc->sc_status[1] & 0x2) == 0x2) { 1893 printf("%s: read-only medium\n", 1894 device_xname(fd->sc_dv)); 1895 error = EROFS; 1896 goto failsilent; 1897 } 1898 /* try again */ 1899 fdc->sc_state = 1900 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1901 break; 1902 1903 case 1: case 2: case 3: 1904 /* didn't work; try recalibrating */ 1905 fdc->sc_state = DORECAL; 1906 break; 1907 1908 case 4: 1909 if (fdc->sc_nstat == 7 && 1910 fdc->sc_status[0] == 0 && 1911 fdc->sc_status[1] == 0 && 1912 fdc->sc_status[2] == 0) { 1913 /* 1914 * We've retried a few times and we've got 1915 * valid status and all three status bytes 1916 * are zero. Assume this condition is the 1917 * result of no disk loaded into the drive. 1918 */ 1919 printf("%s: no medium?\n", 1920 device_xname(fd->sc_dv)); 1921 error = ENODEV; 1922 goto failsilent; 1923 } 1924 1925 /* still no go; reset the bastard */ 1926 fdc->sc_state = DORESET; 1927 break; 1928 1929 default: 1930 fail: 1931 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1932 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1933 fd->sc_skip / FD_BSIZE(fd), 1934 (struct disklabel *)NULL); 1935 printf("\n"); 1936 fdcstatus(fdc, "controller status"); 1937 } 1938 1939 failsilent: 1940 bp->b_error = error; 1941 fdfinish(fd, bp); 1942 } 1943 fdc->sc_errors++; 1944 } 1945 1946 int 1947 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1948 { 1949 struct fd_softc *fd; 1950 struct fdc_softc *fdc; 1951 struct fdformat_parms *form_parms; 1952 struct fdformat_cmd *form_cmd; 1953 struct ne7_fd_formb *fd_formb; 1954 int il[FD_MAX_NSEC + 1]; 1955 int unit; 1956 int i, j; 1957 int error; 1958 1959 unit = FDUNIT(dev); 1960 if (unit >= fd_cd.cd_ndevs) 1961 return (ENXIO); 1962 1963 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1964 fdc = device_private(device_parent(fd->sc_dv)); 1965 1966 switch (cmd) { 1967 case DIOCGDINFO: 1968 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1969 return 0; 1970 1971 case DIOCWLABEL: 1972 if ((flag & FWRITE) == 0) 1973 return EBADF; 1974 /* XXX do something */ 1975 return (0); 1976 1977 case DIOCWDINFO: 1978 if ((flag & FWRITE) == 0) 1979 return (EBADF); 1980 1981 error = setdisklabel(fd->sc_dk.dk_label, 1982 (struct disklabel *)addr, 0, 1983 fd->sc_dk.dk_cpulabel); 1984 if (error) 1985 return (error); 1986 1987 error = writedisklabel(dev, fdstrategy, 1988 fd->sc_dk.dk_label, 1989 fd->sc_dk.dk_cpulabel); 1990 return (error); 1991 1992 case DIOCLOCK: 1993 /* 1994 * Nothing to do here, really. 1995 */ 1996 return (0); 1997 1998 case DIOCEJECT: 1999 if (*(int *)addr == 0) { 2000 int part = DISKPART(dev); 2001 /* 2002 * Don't force eject: check that we are the only 2003 * partition open. If so, unlock it. 2004 */ 2005 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2006 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2007 fd->sc_dk.dk_openmask) { 2008 return (EBUSY); 2009 } 2010 } 2011 /* FALLTHROUGH */ 2012 case ODIOCEJECT: 2013 fd_do_eject(fd); 2014 return (0); 2015 2016 case FDIOCGETFORMAT: 2017 form_parms = (struct fdformat_parms *)addr; 2018 form_parms->fdformat_version = FDFORMAT_VERSION; 2019 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2020 form_parms->ncyl = fd->sc_type->cylinders; 2021 form_parms->nspt = fd->sc_type->sectrac; 2022 form_parms->ntrk = fd->sc_type->heads; 2023 form_parms->stepspercyl = fd->sc_type->step; 2024 form_parms->gaplen = fd->sc_type->gap2; 2025 form_parms->fillbyte = fd->sc_type->fillbyte; 2026 form_parms->interleave = fd->sc_type->interleave; 2027 switch (fd->sc_type->rate) { 2028 case FDC_500KBPS: 2029 form_parms->xfer_rate = 500 * 1024; 2030 break; 2031 case FDC_300KBPS: 2032 form_parms->xfer_rate = 300 * 1024; 2033 break; 2034 case FDC_250KBPS: 2035 form_parms->xfer_rate = 250 * 1024; 2036 break; 2037 default: 2038 return (EINVAL); 2039 } 2040 return (0); 2041 2042 case FDIOCSETFORMAT: 2043 if ((flag & FWRITE) == 0) 2044 return (EBADF); /* must be opened for writing */ 2045 2046 form_parms = (struct fdformat_parms *)addr; 2047 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2048 return (EINVAL);/* wrong version of formatting prog */ 2049 2050 i = form_parms->nbps >> 7; 2051 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2052 i & ~(1 << (ffs(i)-1))) 2053 /* not a power-of-two multiple of 128 */ 2054 return (EINVAL); 2055 2056 switch (form_parms->xfer_rate) { 2057 case 500 * 1024: 2058 fd->sc_type->rate = FDC_500KBPS; 2059 break; 2060 case 300 * 1024: 2061 fd->sc_type->rate = FDC_300KBPS; 2062 break; 2063 case 250 * 1024: 2064 fd->sc_type->rate = FDC_250KBPS; 2065 break; 2066 default: 2067 return (EINVAL); 2068 } 2069 2070 if (form_parms->nspt > FD_MAX_NSEC || 2071 form_parms->fillbyte > 0xff || 2072 form_parms->interleave > 0xff) 2073 return EINVAL; 2074 fd->sc_type->sectrac = form_parms->nspt; 2075 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2076 return EINVAL; 2077 fd->sc_type->heads = form_parms->ntrk; 2078 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2079 fd->sc_type->secsize = ffs(i)-1; 2080 fd->sc_type->gap2 = form_parms->gaplen; 2081 fd->sc_type->cylinders = form_parms->ncyl; 2082 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2083 form_parms->nbps / DEV_BSIZE; 2084 fd->sc_type->step = form_parms->stepspercyl; 2085 fd->sc_type->fillbyte = form_parms->fillbyte; 2086 fd->sc_type->interleave = form_parms->interleave; 2087 return (0); 2088 2089 case FDIOCFORMAT_TRACK: 2090 if((flag & FWRITE) == 0) 2091 /* must be opened for writing */ 2092 return (EBADF); 2093 form_cmd = (struct fdformat_cmd *)addr; 2094 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2095 /* wrong version of formatting prog */ 2096 return (EINVAL); 2097 2098 if (form_cmd->head >= fd->sc_type->heads || 2099 form_cmd->cylinder >= fd->sc_type->cylinders) { 2100 return (EINVAL); 2101 } 2102 2103 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2104 M_TEMP, M_NOWAIT); 2105 if (fd_formb == 0) 2106 return (ENOMEM); 2107 2108 fd_formb->head = form_cmd->head; 2109 fd_formb->cyl = form_cmd->cylinder; 2110 fd_formb->transfer_rate = fd->sc_type->rate; 2111 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2112 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2113 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2114 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2115 2116 memset(il, 0, sizeof il); 2117 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2118 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2119 j++; 2120 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2121 j += fd->sc_type->interleave; 2122 } 2123 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2124 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2125 fd_formb->fd_formb_headno(i) = form_cmd->head; 2126 fd_formb->fd_formb_secno(i) = il[i+1]; 2127 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2128 } 2129 2130 error = fdformat(dev, fd_formb, l->l_proc); 2131 free(fd_formb, M_TEMP); 2132 return error; 2133 2134 case FDIOCGETOPTS: /* get drive options */ 2135 *(int *)addr = fd->sc_opts; 2136 return (0); 2137 2138 case FDIOCSETOPTS: /* set drive options */ 2139 fd->sc_opts = *(int *)addr; 2140 return (0); 2141 2142 #ifdef FD_DEBUG 2143 case _IO('f', 100): 2144 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2145 fdcresult(fdc); 2146 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2147 for (i = 0; i < fdc->sc_nstat; i++) 2148 printf(" 0x%x", fdc->sc_status[i]); 2149 printf(">\n"); 2150 return (0); 2151 2152 case _IOW('f', 101, int): 2153 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2154 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2155 fdconf(fdc); 2156 return (0); 2157 2158 case _IO('f', 102): 2159 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2160 fdcresult(fdc); 2161 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2162 for (i=0; i< fdc->sc_nstat; i++) 2163 printf(" 0x%x", fdc->sc_status[i]); 2164 printf(">\n"); 2165 return (0); 2166 #endif 2167 default: 2168 return (ENOTTY); 2169 } 2170 2171 #ifdef DIAGNOSTIC 2172 panic("fdioctl: impossible"); 2173 #endif 2174 } 2175 2176 int 2177 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2178 { 2179 int rv = 0; 2180 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2181 struct fd_type *type = fd->sc_type; 2182 struct buf *bp; 2183 2184 /* set up a buffer header for fdstrategy() */ 2185 bp = getiobuf(NULL, false); 2186 if (bp == NULL) 2187 return (ENOBUFS); 2188 2189 bp->b_vp = NULL; 2190 bp->b_cflags = BC_BUSY; 2191 bp->b_flags = B_PHYS | B_FORMAT; 2192 bp->b_proc = p; 2193 bp->b_dev = dev; 2194 2195 /* 2196 * Calculate a fake blkno, so fdstrategy() would initiate a 2197 * seek to the requested cylinder. 2198 */ 2199 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2200 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2201 / DEV_BSIZE; 2202 2203 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2204 bp->b_data = (void *)finfo; 2205 2206 #ifdef FD_DEBUG 2207 if (fdc_debug) { 2208 int i; 2209 2210 printf("fdformat: blkno 0x%llx count %d\n", 2211 (unsigned long long)bp->b_blkno, bp->b_bcount); 2212 2213 printf("\tcyl:\t%d\n", finfo->cyl); 2214 printf("\thead:\t%d\n", finfo->head); 2215 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2216 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2217 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2218 printf("\ttrack data:"); 2219 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2220 printf(" [c%d h%d s%d]", 2221 finfo->fd_formb_cylno(i), 2222 finfo->fd_formb_headno(i), 2223 finfo->fd_formb_secno(i) ); 2224 if (finfo->fd_formb_secsize(i) != 2) 2225 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2226 } 2227 printf("\n"); 2228 } 2229 #endif 2230 2231 /* now do the format */ 2232 fdstrategy(bp); 2233 2234 /* ...and wait for it to complete */ 2235 rv = biowait(bp); 2236 putiobuf(bp); 2237 return (rv); 2238 } 2239 2240 void 2241 fdgetdisklabel(dev_t dev) 2242 { 2243 int unit = FDUNIT(dev), i; 2244 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2245 struct disklabel *lp = fd->sc_dk.dk_label; 2246 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2247 2248 memset(lp, 0, sizeof(struct disklabel)); 2249 memset(clp, 0, sizeof(struct cpu_disklabel)); 2250 2251 lp->d_type = DKTYPE_FLOPPY; 2252 lp->d_secsize = FD_BSIZE(fd); 2253 lp->d_secpercyl = fd->sc_type->seccyl; 2254 lp->d_nsectors = fd->sc_type->sectrac; 2255 lp->d_ncylinders = fd->sc_type->cylinders; 2256 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2257 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2258 lp->d_rpm = 3600; /* XXX like it matters... */ 2259 2260 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2261 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2262 lp->d_interleave = 1; 2263 2264 lp->d_partitions[RAW_PART].p_offset = 0; 2265 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2266 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2267 lp->d_npartitions = RAW_PART + 1; 2268 2269 lp->d_magic = DISKMAGIC; 2270 lp->d_magic2 = DISKMAGIC; 2271 lp->d_checksum = dkcksum(lp); 2272 2273 /* 2274 * Call the generic disklabel extraction routine. If there's 2275 * not a label there, fake it. 2276 */ 2277 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2278 strncpy(lp->d_packname, "default label", 2279 sizeof(lp->d_packname)); 2280 /* 2281 * Reset the partition info; it might have gotten 2282 * trashed in readdisklabel(). 2283 * 2284 * XXX Why do we have to do this? readdisklabel() 2285 * should be safe... 2286 */ 2287 for (i = 0; i < MAXPARTITIONS; ++i) { 2288 lp->d_partitions[i].p_offset = 0; 2289 if (i == RAW_PART) { 2290 lp->d_partitions[i].p_size = 2291 lp->d_secpercyl * lp->d_ncylinders; 2292 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2293 } else { 2294 lp->d_partitions[i].p_size = 0; 2295 lp->d_partitions[i].p_fstype = FS_UNUSED; 2296 } 2297 } 2298 lp->d_npartitions = RAW_PART + 1; 2299 } 2300 } 2301 2302 void 2303 fd_do_eject(struct fd_softc *fd) 2304 { 2305 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 2306 2307 if (CPU_ISSUN4C) { 2308 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2309 delay(10); 2310 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2311 return; 2312 } 2313 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2314 bus_space_tag_t t = fdc->sc_bustag; 2315 bus_space_handle_t h = fdc->sc_handle; 2316 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2317 2318 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2319 delay(10); 2320 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2321 return; 2322 } 2323 } 2324 2325 /* ARGSUSED */ 2326 void 2327 fd_mountroot_hook(device_t dev) 2328 { 2329 int c; 2330 2331 fd_do_eject(device_private(dev)); 2332 printf("Insert filesystem floppy and press return."); 2333 for (;;) { 2334 c = cngetc(); 2335 if ((c == '\r') || (c == '\n')) { 2336 printf("\n"); 2337 break; 2338 } 2339 } 2340 } 2341 2342 #ifdef MEMORY_DISK_HOOKS 2343 2344 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2345 2346 int 2347 fd_read_md_image(size_t *sizep, void * *addrp) 2348 { 2349 struct buf buf, *bp = &buf; 2350 dev_t dev; 2351 off_t offset; 2352 void *addr; 2353 2354 dev = makedev(54,0); /* XXX */ 2355 2356 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2357 *addrp = addr; 2358 2359 if (fdopen(dev, 0, S_IFCHR, NULL)) 2360 panic("fd: mountroot: fdopen"); 2361 2362 offset = 0; 2363 2364 for (;;) { 2365 bp->b_dev = dev; 2366 bp->b_error = 0; 2367 bp->b_resid = 0; 2368 bp->b_proc = NULL; 2369 bp->b_cflags |= BC_BUSY; 2370 bp->b_flags = B_PHYS | B_RAW | B_READ; 2371 bp->b_blkno = btodb(offset); 2372 bp->b_bcount = DEV_BSIZE; 2373 bp->b_data = addr; 2374 fdstrategy(bp); 2375 biowait(bp); 2376 if (bp->b_error) 2377 panic("fd: mountroot: fdread error %d", bp->b_error); 2378 2379 if (bp->b_resid != 0) 2380 break; 2381 2382 addr = (char *)addr + DEV_BSIZE; 2383 offset += DEV_BSIZE; 2384 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2385 break; 2386 } 2387 (void)fdclose(dev, 0, S_IFCHR, NULL); 2388 *sizep = offset; 2389 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2390 return (0); 2391 } 2392 #endif /* MEMORY_DISK_HOOKS */ 2393
Indexes created Fri Oct 03 02:09:57 GMT 2025