fd.c revision 1.155.2.1
1 /* $NetBSD: fd.c,v 1.155.2.1 2015/04/06 15:18:02 skrll 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 1.155.2.1 2015/04/06 15:18:02 skrll 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 = { fdstrategy }; 341 342 struct fd_type *fd_nvtotype(char *, int, int); 343 void fd_set_motor(struct fdc_softc *); 344 void fd_motor_off(void *); 345 void fd_motor_on(void *); 346 int fdcresult(struct fdc_softc *); 347 int fdc_wrfifo(struct fdc_softc *, uint8_t); 348 void fdcstart(struct fdc_softc *); 349 void fdcstatus(struct fdc_softc *, const char *); 350 void fdc_reset(struct fdc_softc *); 351 int fdc_diskchange(struct fdc_softc *); 352 void fdctimeout(void *); 353 void fdcpseudointr(void *); 354 int fdc_c_hwintr(void *); 355 void fdchwintr(void); 356 void fdcswintr(void *); 357 int fdcstate(struct fdc_softc *); 358 void fdcretry(struct fdc_softc *); 359 void fdfinish(struct fd_softc *, struct buf *); 360 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 361 void fd_do_eject(struct fd_softc *); 362 void fd_mountroot_hook(device_t); 363 static int fdconf(struct fdc_softc *); 364 static void establish_chip_type( 365 struct fdc_softc *, 366 bus_space_tag_t, 367 bus_addr_t, 368 bus_size_t, 369 bus_space_handle_t); 370 371 #ifdef MEMORY_DISK_HOOKS 372 int fd_read_md_image(size_t *, void **); 373 #endif 374 375 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 376 377 int 378 fdcmatch_mainbus(device_t parent, cfdata_t match, void *aux) 379 { 380 struct mainbus_attach_args *ma = aux; 381 382 /* 383 * Floppy controller is on mainbus on sun4c. 384 */ 385 if (!CPU_ISSUN4C) 386 return (0); 387 388 /* sun4c PROMs call the controller "fd" */ 389 if (strcmp("fd", ma->ma_name) != 0) 390 return (0); 391 392 return (bus_space_probe(ma->ma_bustag, 393 ma->ma_paddr, 394 1, /* probe size */ 395 0, /* offset */ 396 0, /* flags */ 397 NULL, NULL)); 398 } 399 400 int 401 fdcmatch_obio(device_t parent, cfdata_t match, void *aux) 402 { 403 union obio_attach_args *uoba = aux; 404 struct sbus_attach_args *sa; 405 406 /* 407 * Floppy controller is on obio on sun4m. 408 */ 409 if (uoba->uoba_isobio4 != 0) 410 return (0); 411 412 sa = &uoba->uoba_sbus; 413 414 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 415 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 416 return (0); 417 418 return (bus_space_probe(sa->sa_bustag, 419 sbus_bus_addr(sa->sa_bustag, 420 sa->sa_slot, sa->sa_offset), 421 1, /* probe size */ 422 0, /* offset */ 423 0, /* flags */ 424 NULL, NULL)); 425 } 426 427 static void 428 establish_chip_type(struct fdc_softc *fdc, 429 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 430 bus_space_handle_t handle) 431 { 432 uint8_t v; 433 434 /* 435 * This hack from Chris Torek: apparently DOR really 436 * addresses MSR/DRS on a 82072. 437 * We used to rely on the VERSION command to tell the 438 * difference (which did not work). 439 */ 440 441 /* First, check the size of the register bank */ 442 if (size < 8) 443 /* It isn't a 82077 */ 444 return; 445 446 /* Then probe the DOR register offset */ 447 if (bus_space_probe(tag, addr, 448 1, /* probe size */ 449 FDREG77_DOR, /* offset */ 450 0, /* flags */ 451 NULL, NULL) == 0) { 452 453 /* It isn't a 82077 */ 454 return; 455 } 456 457 v = bus_space_read_1(tag, handle, FDREG77_DOR); 458 if (v == NE7_RQM) { 459 /* 460 * Value in DOR looks like it's really MSR 461 */ 462 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 463 v = bus_space_read_1(tag, handle, FDREG77_DOR); 464 if (v == NE7_RQM) { 465 /* 466 * The value in the DOR didn't stick; 467 * it isn't a 82077 468 */ 469 return; 470 } 471 } 472 473 fdc->sc_flags |= FDC_82077; 474 } 475 476 /* 477 * Arguments passed between fdcattach and fdprobe. 478 */ 479 struct fdc_attach_args { 480 int fa_drive; 481 struct fd_type *fa_deftype; 482 }; 483 484 /* 485 * Print the location of a disk drive (called just before attaching the 486 * the drive). If `fdc' is not NULL, the drive was found but was not 487 * in the system config file; print the drive name as well. 488 * Return QUIET (config_find ignores this if the device was configured) to 489 * avoid printing `fdN not configured' messages. 490 */ 491 int 492 fdprint(void *aux, const char *fdc) 493 { 494 register struct fdc_attach_args *fa = aux; 495 496 if (!fdc) 497 aprint_normal(" drive %d", fa->fa_drive); 498 return (QUIET); 499 } 500 501 /* 502 * Configure several parameters and features on the FDC. 503 * Return 0 on success. 504 */ 505 static int 506 fdconf(struct fdc_softc *fdc) 507 { 508 int vroom; 509 510 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 511 return (-1); 512 513 /* 514 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 515 * the PROM thinks is appropriate. 516 */ 517 if ((vroom = fdc->sc_status[7]) == 0) 518 vroom = 0x64; 519 520 /* Configure controller to use FIFO and Implied Seek */ 521 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 522 return (-1); 523 if (fdc_wrfifo(fdc, vroom) != 0) 524 return (-1); 525 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 526 return (-1); 527 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 528 return (-1); 529 /* No result phase for the NE7CMD_CFG command */ 530 531 if ((fdc->sc_flags & FDC_82077) != 0) { 532 /* Lock configuration across soft resets. */ 533 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 534 fdcresult(fdc) != 1) { 535 #ifdef DEBUG 536 printf("fdconf: CFGLOCK failed"); 537 #endif 538 return (-1); 539 } 540 } 541 542 return (0); 543 #if 0 544 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 545 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 546 if (fdc_debug) 547 printf("[version cmd]"); 548 } 549 #endif 550 } 551 552 void 553 fdcattach_mainbus(device_t parent, device_t self, void *aux) 554 { 555 struct fdc_softc *fdc = device_private(self); 556 struct mainbus_attach_args *ma = aux; 557 558 fdc->sc_dev = self; 559 fdc->sc_bustag = ma->ma_bustag; 560 561 if (bus_space_map( 562 ma->ma_bustag, 563 ma->ma_paddr, 564 ma->ma_size, 565 BUS_SPACE_MAP_LINEAR, 566 &fdc->sc_handle) != 0) { 567 printf("%s: cannot map registers\n", device_xname(self)); 568 return; 569 } 570 571 establish_chip_type(fdc, 572 ma->ma_bustag, 573 ma->ma_paddr, 574 ma->ma_size, 575 fdc->sc_handle); 576 577 if (fdcattach(fdc, ma->ma_pri) != 0) 578 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 579 } 580 581 void 582 fdcattach_obio(device_t parent, device_t self, void *aux) 583 { 584 struct fdc_softc *fdc = device_private(self); 585 union obio_attach_args *uoba = aux; 586 struct sbus_attach_args *sa = &uoba->uoba_sbus; 587 588 if (sa->sa_nintr == 0) { 589 printf(": no interrupt line configured\n"); 590 return; 591 } 592 593 fdc->sc_dev = self; 594 fdc->sc_bustag = sa->sa_bustag; 595 596 if (sbus_bus_map(sa->sa_bustag, 597 sa->sa_slot, sa->sa_offset, sa->sa_size, 598 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 599 printf("%s: cannot map control registers\n", 600 device_xname(self)); 601 return; 602 } 603 604 establish_chip_type(fdc, 605 sa->sa_bustag, 606 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 607 sa->sa_size, 608 fdc->sc_handle); 609 610 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 611 printf(": no drives attached\n"); 612 return; 613 } 614 615 if (fdcattach(fdc, sa->sa_pri) != 0) 616 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 617 } 618 619 int 620 fdcattach(struct fdc_softc *fdc, int pri) 621 { 622 struct fdc_attach_args fa; 623 int drive_attached; 624 char code; 625 626 callout_init(&fdc->sc_timo_ch, 0); 627 callout_init(&fdc->sc_intr_ch, 0); 628 629 fdc->sc_state = DEVIDLE; 630 fdc->sc_itask = FDC_ITASK_NONE; 631 fdc->sc_istatus = FDC_ISTATUS_NONE; 632 fdc->sc_flags |= FDC_EIS; 633 TAILQ_INIT(&fdc->sc_drives); 634 635 if ((fdc->sc_flags & FDC_82077) != 0) { 636 fdc->sc_reg_msr = FDREG77_MSR; 637 fdc->sc_reg_fifo = FDREG77_FIFO; 638 fdc->sc_reg_dor = FDREG77_DOR; 639 fdc->sc_reg_dir = FDREG77_DIR; 640 code = '7'; 641 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 642 } else { 643 fdc->sc_reg_msr = FDREG72_MSR; 644 fdc->sc_reg_fifo = FDREG72_FIFO; 645 fdc->sc_reg_dor = 0; 646 code = '2'; 647 } 648 649 /* 650 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 651 * Note: CFG_EFIFO is active-low, initial threshold value: 8 652 */ 653 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 654 if (fdconf(fdc) != 0) { 655 printf(": no drives attached\n"); 656 return (-1); 657 } 658 659 fdciop = &fdc->sc_io; 660 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 661 fdc_c_hwintr, fdc, 662 #ifdef notyet /* XXX bsd_fdintr.s needs to be fixed for MI softint(9) */ 663 fdchwintr 664 #else 665 NULL 666 #endif 667 ) == NULL) { 668 printf("\n%s: cannot register interrupt handler\n", 669 device_xname(fdc->sc_dev)); 670 return (-1); 671 } 672 673 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 674 if (fdc->sc_sicookie == NULL) { 675 printf("\n%s: cannot register soft interrupt handler\n", 676 device_xname(fdc->sc_dev)); 677 return (-1); 678 } 679 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 680 681 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 682 device_xname(fdc->sc_dev), "intr"); 683 684 /* physical limit: four drives per controller. */ 685 drive_attached = 0; 686 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 687 fa.fa_deftype = NULL; /* unknown */ 688 fa.fa_deftype = &fd_types[0]; /* XXX */ 689 if (config_found(fdc->sc_dev, (void *)&fa, fdprint) != NULL) 690 drive_attached = 1; 691 } 692 693 if (drive_attached == 0) { 694 /* XXX - dis-establish interrupts here */ 695 /* return (-1); */ 696 } 697 698 return (0); 699 } 700 701 int 702 fdmatch(device_t parent, cfdata_t match, void *aux) 703 { 704 struct fdc_softc *fdc = device_private(parent); 705 bus_space_tag_t t = fdc->sc_bustag; 706 bus_space_handle_t h = fdc->sc_handle; 707 struct fdc_attach_args *fa = aux; 708 int drive = fa->fa_drive; 709 int n, ok; 710 711 if (drive > 0) 712 /* XXX - for now, punt on more than one drive */ 713 return (0); 714 715 if ((fdc->sc_flags & FDC_82077) != 0) { 716 /* select drive and turn on motor */ 717 bus_space_write_1(t, h, fdc->sc_reg_dor, 718 drive | FDO_FRST | FDO_MOEN(drive)); 719 /* wait for motor to spin up */ 720 delay(250000); 721 } else { 722 auxregbisc(AUXIO4C_FDS, 0); 723 } 724 fdc->sc_nstat = 0; 725 fdc_wrfifo(fdc, NE7CMD_RECAL); 726 fdc_wrfifo(fdc, drive); 727 728 /* Wait for recalibration to complete */ 729 for (n = 0; n < 10000; n++) { 730 uint8_t v; 731 732 delay(1000); 733 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 734 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 735 /* wait a bit longer till device *really* is ready */ 736 delay(100000); 737 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 738 break; 739 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 740 /* 741 * Got `invalid command'; we interpret it 742 * to mean that the re-calibrate hasn't in 743 * fact finished yet 744 */ 745 continue; 746 break; 747 } 748 } 749 n = fdc->sc_nstat; 750 #ifdef FD_DEBUG 751 if (fdc_debug) { 752 int i; 753 printf("fdprobe: %d stati:", n); 754 for (i = 0; i < n; i++) 755 printf(" 0x%x", fdc->sc_status[i]); 756 printf("\n"); 757 } 758 #endif 759 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 760 761 /* turn off motor */ 762 if ((fdc->sc_flags & FDC_82077) != 0) { 763 /* deselect drive and turn motor off */ 764 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 765 } else { 766 auxregbisc(0, AUXIO4C_FDS); 767 } 768 769 return (ok); 770 } 771 772 /* 773 * Controller is working, and drive responded. Attach it. 774 */ 775 void 776 fdattach(device_t parent, device_t self, void *aux) 777 { 778 struct fdc_softc *fdc = device_private(parent); 779 struct fd_softc *fd = device_private(self); 780 struct fdc_attach_args *fa = aux; 781 struct fd_type *type = fa->fa_deftype; 782 int drive = fa->fa_drive; 783 784 fd->sc_dv = self; 785 786 callout_init(&fd->sc_motoron_ch, 0); 787 callout_init(&fd->sc_motoroff_ch, 0); 788 789 /* XXX Allow `flags' to override device type? */ 790 791 if (type) 792 printf(": %s %d cyl, %d head, %d sec\n", type->name, 793 type->cylinders, type->heads, type->sectrac); 794 else 795 printf(": density unknown\n"); 796 797 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 798 fd->sc_cylin = -1; 799 fd->sc_drive = drive; 800 fd->sc_deftype = type; 801 fdc->sc_fd[drive] = fd; 802 803 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 804 fdc_wrfifo(fdc, type->steprate); 805 /* XXX head load time == 6ms */ 806 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 807 808 /* 809 * Initialize and attach the disk structure. 810 */ 811 disk_init(&fd->sc_dk, device_xname(fd->sc_dv), &fddkdriver); 812 disk_attach(&fd->sc_dk); 813 814 /* 815 * Establish a mountroot_hook anyway in case we booted 816 * with RB_ASKNAME and get selected as the boot device. 817 */ 818 mountroothook_establish(fd_mountroot_hook, fd->sc_dv); 819 820 /* Make sure the drive motor gets turned off at shutdown time. */ 821 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 822 aprint_error_dev(self, "couldn't establish power handler\n"); 823 } 824 825 bool fdshutdown(device_t self, int how) 826 { 827 struct fd_softc *fd = device_private(self); 828 829 fd_motor_off(fd); 830 return true; 831 } 832 833 bool fdsuspend(device_t self, const pmf_qual_t *qual) 834 { 835 836 return fdshutdown(self, boothowto); 837 } 838 839 840 inline struct fd_type * 841 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 842 { 843 int type = FDTYPE(dev); 844 845 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 846 return (NULL); 847 return (type ? &fd_types[type - 1] : fd->sc_deftype); 848 } 849 850 void 851 fdstrategy(struct buf *bp) 852 { 853 struct fd_softc *fd; 854 int unit = FDUNIT(bp->b_dev); 855 int sz; 856 int s; 857 858 /* Valid unit, controller, and request? */ 859 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 860 bp->b_blkno < 0 || 861 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 862 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 863 (bp->b_flags & B_FORMAT) == 0)) { 864 bp->b_error = EINVAL; 865 goto done; 866 } 867 868 /* If it's a null transfer, return immediately. */ 869 if (bp->b_bcount == 0) 870 goto done; 871 872 sz = howmany(bp->b_bcount, DEV_BSIZE); 873 874 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 875 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 876 - bp->b_blkno; 877 if (sz == 0) { 878 /* If exactly at end of disk, return EOF. */ 879 bp->b_resid = bp->b_bcount; 880 goto done; 881 } 882 if (sz < 0) { 883 /* If past end of disk, return EINVAL. */ 884 bp->b_error = EINVAL; 885 goto done; 886 } 887 /* Otherwise, truncate request. */ 888 bp->b_bcount = sz << DEV_BSHIFT; 889 } 890 891 bp->b_rawblkno = bp->b_blkno; 892 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 893 (FD_BSIZE(fd) * fd->sc_type->seccyl); 894 895 #ifdef FD_DEBUG 896 if (fdc_debug > 1) 897 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 898 (long long)bp->b_blkno, bp->b_bcount, 899 (long long)fd->sc_blkno, bp->b_cylinder); 900 #endif 901 902 /* Queue transfer on drive, activate drive and controller if idle. */ 903 s = splbio(); 904 bufq_put(fd->sc_q, bp); 905 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 906 if (fd->sc_active == 0) 907 fdstart(fd); 908 #ifdef DIAGNOSTIC 909 else { 910 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 911 if (fdc->sc_state == DEVIDLE) { 912 printf("fdstrategy: controller inactive\n"); 913 fdcstart(fdc); 914 } 915 } 916 #endif 917 splx(s); 918 return; 919 920 done: 921 /* Toss transfer; we're done early. */ 922 biodone(bp); 923 } 924 925 void 926 fdstart(struct fd_softc *fd) 927 { 928 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 929 int active = fdc->sc_drives.tqh_first != 0; 930 931 /* Link into controller queue. */ 932 fd->sc_active = 1; 933 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 934 935 /* If controller not already active, start it. */ 936 if (!active) 937 fdcstart(fdc); 938 } 939 940 void 941 fdfinish(struct fd_softc *fd, struct buf *bp) 942 { 943 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 944 945 /* 946 * Move this drive to the end of the queue to give others a `fair' 947 * chance. We only force a switch if N operations are completed while 948 * another drive is waiting to be serviced, since there is a long motor 949 * startup delay whenever we switch. 950 */ 951 (void)bufq_get(fd->sc_q); 952 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 953 fd->sc_ops = 0; 954 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 955 if (bufq_peek(fd->sc_q) != NULL) { 956 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 957 } else 958 fd->sc_active = 0; 959 } 960 bp->b_resid = fd->sc_bcount; 961 fd->sc_skip = 0; 962 963 biodone(bp); 964 /* turn off motor 5s from now */ 965 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 966 fdc->sc_state = DEVIDLE; 967 } 968 969 void 970 fdc_reset(struct fdc_softc *fdc) 971 { 972 bus_space_tag_t t = fdc->sc_bustag; 973 bus_space_handle_t h = fdc->sc_handle; 974 975 if ((fdc->sc_flags & FDC_82077) != 0) { 976 bus_space_write_1(t, h, fdc->sc_reg_dor, 977 FDO_FDMAEN | FDO_MOEN(0)); 978 } 979 980 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 981 delay(10); 982 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 983 984 if ((fdc->sc_flags & FDC_82077) != 0) { 985 bus_space_write_1(t, h, fdc->sc_reg_dor, 986 FDO_FRST | FDO_FDMAEN | FDO_DS); 987 } 988 #ifdef FD_DEBUG 989 if (fdc_debug) 990 printf("fdc reset\n"); 991 #endif 992 } 993 994 void 995 fd_set_motor(struct fdc_softc *fdc) 996 { 997 struct fd_softc *fd; 998 u_char status; 999 int n; 1000 1001 if ((fdc->sc_flags & FDC_82077) != 0) { 1002 status = FDO_FRST | FDO_FDMAEN; 1003 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1004 status |= fd->sc_drive; 1005 1006 for (n = 0; n < 4; n++) 1007 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1008 status |= FDO_MOEN(n); 1009 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1010 fdc->sc_reg_dor, status); 1011 } else { 1012 1013 for (n = 0; n < 4; n++) { 1014 if ((fd = fdc->sc_fd[n]) != NULL && 1015 (fd->sc_flags & FD_MOTOR) != 0) { 1016 auxregbisc(AUXIO4C_FDS, 0); 1017 return; 1018 } 1019 } 1020 auxregbisc(0, AUXIO4C_FDS); 1021 } 1022 } 1023 1024 void 1025 fd_motor_off(void *arg) 1026 { 1027 struct fd_softc *fd = arg; 1028 int s; 1029 1030 s = splbio(); 1031 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1032 fd_set_motor(device_private(device_parent(fd->sc_dv))); 1033 splx(s); 1034 } 1035 1036 void 1037 fd_motor_on(void *arg) 1038 { 1039 struct fd_softc *fd = arg; 1040 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 1041 int s; 1042 1043 s = splbio(); 1044 fd->sc_flags &= ~FD_MOTOR_WAIT; 1045 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1046 (void) fdcstate(fdc); 1047 splx(s); 1048 } 1049 1050 /* 1051 * Get status bytes off the FDC after a command has finished 1052 * Returns the number of status bytes read; -1 on error. 1053 * The return value is also stored in `sc_nstat'. 1054 */ 1055 int 1056 fdcresult(struct fdc_softc *fdc) 1057 { 1058 bus_space_tag_t t = fdc->sc_bustag; 1059 bus_space_handle_t h = fdc->sc_handle; 1060 int j, n = 0; 1061 1062 for (j = 10000; j; j--) { 1063 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1064 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1065 if (v == NE7_RQM) 1066 return (fdc->sc_nstat = n); 1067 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1068 if (n >= sizeof(fdc->sc_status)) { 1069 log(LOG_ERR, "fdcresult: overrun\n"); 1070 return (-1); 1071 } 1072 fdc->sc_status[n++] = 1073 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1074 } else 1075 delay(1); 1076 } 1077 1078 log(LOG_ERR, "fdcresult: timeout\n"); 1079 return (fdc->sc_nstat = -1); 1080 } 1081 1082 /* 1083 * Write a command byte to the FDC. 1084 * Returns 0 on success; -1 on failure (i.e. timeout) 1085 */ 1086 int 1087 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1088 { 1089 bus_space_tag_t t = fdc->sc_bustag; 1090 bus_space_handle_t h = fdc->sc_handle; 1091 int i; 1092 1093 for (i = 100000; i-- > 0;) { 1094 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1095 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1096 /* The chip is ready */ 1097 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1098 return (0); 1099 } 1100 delay(1); 1101 } 1102 return (-1); 1103 } 1104 1105 int 1106 fdc_diskchange(struct fdc_softc *fdc) 1107 { 1108 1109 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1110 bus_space_tag_t t = fdc->sc_bustag; 1111 bus_space_handle_t h = fdc->sc_handle; 1112 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1113 return ((v & FDI_DCHG) != 0); 1114 } else if (CPU_ISSUN4C) { 1115 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1116 } 1117 return (0); 1118 } 1119 1120 int 1121 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1122 { 1123 int unit, pmask; 1124 struct fd_softc *fd; 1125 struct fd_type *type; 1126 1127 unit = FDUNIT(dev); 1128 fd = device_lookup_private(&fd_cd, unit); 1129 if (fd == NULL) 1130 return (ENXIO); 1131 type = fd_dev_to_type(fd, dev); 1132 if (type == NULL) 1133 return (ENXIO); 1134 1135 if ((fd->sc_flags & FD_OPEN) != 0 && 1136 fd->sc_type != type) 1137 return (EBUSY); 1138 1139 fd->sc_type = type; 1140 fd->sc_cylin = -1; 1141 fd->sc_flags |= FD_OPEN; 1142 1143 /* 1144 * Only update the disklabel if we're not open anywhere else. 1145 */ 1146 if (fd->sc_dk.dk_openmask == 0) 1147 fdgetdisklabel(dev); 1148 1149 pmask = (1 << DISKPART(dev)); 1150 1151 switch (fmt) { 1152 case S_IFCHR: 1153 fd->sc_dk.dk_copenmask |= pmask; 1154 break; 1155 1156 case S_IFBLK: 1157 fd->sc_dk.dk_bopenmask |= pmask; 1158 break; 1159 } 1160 fd->sc_dk.dk_openmask = 1161 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1162 1163 return (0); 1164 } 1165 1166 int 1167 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1168 { 1169 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1170 int pmask = (1 << DISKPART(dev)); 1171 1172 fd->sc_flags &= ~FD_OPEN; 1173 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1174 1175 switch (fmt) { 1176 case S_IFCHR: 1177 fd->sc_dk.dk_copenmask &= ~pmask; 1178 break; 1179 1180 case S_IFBLK: 1181 fd->sc_dk.dk_bopenmask &= ~pmask; 1182 break; 1183 } 1184 fd->sc_dk.dk_openmask = 1185 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1186 1187 return (0); 1188 } 1189 1190 int 1191 fdread(dev_t dev, struct uio *uio, int flag) 1192 { 1193 1194 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1195 } 1196 1197 int 1198 fdwrite(dev_t dev, struct uio *uio, int flag) 1199 { 1200 1201 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1202 } 1203 1204 void 1205 fdcstart(struct fdc_softc *fdc) 1206 { 1207 1208 #ifdef DIAGNOSTIC 1209 /* only got here if controller's drive queue was inactive; should 1210 be in idle state */ 1211 if (fdc->sc_state != DEVIDLE) { 1212 printf("fdcstart: not idle\n"); 1213 return; 1214 } 1215 #endif 1216 (void) fdcstate(fdc); 1217 } 1218 1219 static void 1220 fdcpstatus(int n, struct fdc_softc *fdc) 1221 { 1222 char bits[64]; 1223 1224 switch (n) { 1225 case 0: 1226 printf("\n"); 1227 break; 1228 case 2: 1229 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1230 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1231 break; 1232 case 7: 1233 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1234 printf(" (st0 %s", bits); 1235 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1236 printf(" st1 %s", bits); 1237 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1238 printf(" st2 %s", bits); 1239 printf(" cyl %d head %d sec %d)\n", 1240 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1241 break; 1242 #ifdef DIAGNOSTIC 1243 default: 1244 printf("\nfdcstatus: weird size"); 1245 break; 1246 #endif 1247 } 1248 } 1249 1250 void 1251 fdcstatus(struct fdc_softc *fdc, const char *s) 1252 { 1253 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1254 int n; 1255 1256 /* Just print last status */ 1257 n = fdc->sc_nstat; 1258 1259 #if 0 1260 /* 1261 * A 82072 seems to return <invalid command> on 1262 * gratuitous Sense Interrupt commands. 1263 */ 1264 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1265 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1266 (void) fdcresult(fdc); 1267 n = 2; 1268 } 1269 #endif 1270 1271 printf("%s: %s: state %d", 1272 fd ? device_xname(fd->sc_dv) : "fdc", s, fdc->sc_state); 1273 1274 fdcpstatus(n, fdc); 1275 } 1276 1277 void 1278 fdctimeout(void *arg) 1279 { 1280 struct fdc_softc *fdc = arg; 1281 struct fd_softc *fd; 1282 int s; 1283 1284 s = splbio(); 1285 fd = fdc->sc_drives.tqh_first; 1286 if (fd == NULL) { 1287 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1288 device_xname(fdc->sc_dev), 1289 fdc->sc_state, fdc->sc_istatus); 1290 fdc->sc_state = DEVIDLE; 1291 goto out; 1292 } 1293 1294 if (bufq_peek(fd->sc_q) != NULL) 1295 fdc->sc_state++; 1296 else 1297 fdc->sc_state = DEVIDLE; 1298 1299 (void) fdcstate(fdc); 1300 out: 1301 splx(s); 1302 1303 } 1304 1305 void 1306 fdcpseudointr(void *arg) 1307 { 1308 struct fdc_softc *fdc = arg; 1309 int s; 1310 1311 /* Just ensure it has the right spl. */ 1312 s = splbio(); 1313 (void) fdcstate(fdc); 1314 splx(s); 1315 } 1316 1317 1318 /* 1319 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1320 * handler is available. Unfortunately, we have no reliable way to 1321 * determine that the interrupt really came from the floppy controller; 1322 * just hope that the other devices that share this interrupt level 1323 * can do better.. 1324 */ 1325 int 1326 fdc_c_hwintr(void *arg) 1327 { 1328 struct fdc_softc *fdc = arg; 1329 bus_space_tag_t t = fdc->sc_bustag; 1330 bus_space_handle_t h = fdc->sc_handle; 1331 1332 switch (fdc->sc_itask) { 1333 case FDC_ITASK_NONE: 1334 return (0); 1335 case FDC_ITASK_SENSEI: 1336 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1337 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1338 else 1339 fdc->sc_istatus = FDC_ISTATUS_DONE; 1340 softint_schedule(fdc->sc_sicookie); 1341 return (1); 1342 case FDC_ITASK_RESULT: 1343 if (fdcresult(fdc) == -1) 1344 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1345 else 1346 fdc->sc_istatus = FDC_ISTATUS_DONE; 1347 softint_schedule(fdc->sc_sicookie); 1348 return (1); 1349 case FDC_ITASK_DMA: 1350 /* Proceed with pseudo-DMA below */ 1351 break; 1352 default: 1353 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1354 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1355 softint_schedule(fdc->sc_sicookie); 1356 return (1); 1357 } 1358 1359 /* 1360 * Pseudo DMA in progress 1361 */ 1362 for (;;) { 1363 uint8_t msr; 1364 1365 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1366 1367 if ((msr & NE7_RQM) == 0) 1368 /* That's all this round */ 1369 break; 1370 1371 if ((msr & NE7_NDM) == 0) { 1372 /* Execution phase finished, get result. */ 1373 fdcresult(fdc); 1374 fdc->sc_istatus = FDC_ISTATUS_DONE; 1375 softint_schedule(fdc->sc_sicookie); 1376 break; 1377 } 1378 1379 if (fdc->sc_tc == 0) 1380 /* For some reason the controller wants to transfer 1381 more data then what we want to transfer. */ 1382 panic("fdc: overrun"); 1383 1384 /* Another byte can be transferred */ 1385 if ((msr & NE7_DIO) != 0) 1386 *fdc->sc_data = 1387 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1388 else 1389 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1390 *fdc->sc_data); 1391 1392 fdc->sc_data++; 1393 if (--fdc->sc_tc == 0) { 1394 FTC_FLIP; 1395 break; 1396 } 1397 } 1398 return (1); 1399 } 1400 1401 void 1402 fdcswintr(void *arg) 1403 { 1404 struct fdc_softc *fdc = arg; 1405 1406 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1407 /* This (software) interrupt is not for us */ 1408 return; 1409 1410 switch (fdc->sc_istatus) { 1411 case FDC_ISTATUS_ERROR: 1412 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1413 break; 1414 case FDC_ISTATUS_SPURIOUS: 1415 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1416 break; 1417 } 1418 1419 fdcstate(fdc); 1420 return; 1421 } 1422 1423 int 1424 fdcstate(struct fdc_softc *fdc) 1425 { 1426 1427 #define st0 fdc->sc_status[0] 1428 #define st1 fdc->sc_status[1] 1429 #define cyl fdc->sc_status[1] 1430 #define FDC_WRFIFO(fdc, c) do { \ 1431 if (fdc_wrfifo(fdc, (c))) { \ 1432 goto xxx; \ 1433 } \ 1434 } while(0) 1435 1436 struct fd_softc *fd; 1437 struct buf *bp; 1438 int read, head, sec, nblks; 1439 struct fd_type *type; 1440 struct ne7_fd_formb *finfo = NULL; 1441 1442 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1443 /* Prevent loop if the reset sequence produces errors */ 1444 if (fdc->sc_state != RESETCOMPLETE && 1445 fdc->sc_state != RECALWAIT && 1446 fdc->sc_state != RECALCOMPLETE) 1447 fdc->sc_state = DORESET; 1448 } 1449 1450 /* Clear I task/status field */ 1451 fdc->sc_istatus = FDC_ISTATUS_NONE; 1452 fdc->sc_itask = FDC_ITASK_NONE; 1453 1454 loop: 1455 /* Is there a drive for the controller to do a transfer with? */ 1456 fd = fdc->sc_drives.tqh_first; 1457 if (fd == NULL) { 1458 fdc->sc_state = DEVIDLE; 1459 return (0); 1460 } 1461 1462 /* Is there a transfer to this drive? If not, deactivate drive. */ 1463 bp = bufq_peek(fd->sc_q); 1464 if (bp == NULL) { 1465 fd->sc_ops = 0; 1466 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1467 fd->sc_active = 0; 1468 goto loop; 1469 } 1470 1471 if (bp->b_flags & B_FORMAT) 1472 finfo = (struct ne7_fd_formb *)bp->b_data; 1473 1474 switch (fdc->sc_state) { 1475 case DEVIDLE: 1476 fdc->sc_errors = 0; 1477 fd->sc_skip = 0; 1478 fd->sc_bcount = bp->b_bcount; 1479 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1480 callout_stop(&fd->sc_motoroff_ch); 1481 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1482 fdc->sc_state = MOTORWAIT; 1483 return (1); 1484 } 1485 if ((fd->sc_flags & FD_MOTOR) == 0) { 1486 /* Turn on the motor, being careful about pairing. */ 1487 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1488 if (ofd && ofd->sc_flags & FD_MOTOR) { 1489 callout_stop(&ofd->sc_motoroff_ch); 1490 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1491 } 1492 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1493 fd_set_motor(fdc); 1494 fdc->sc_state = MOTORWAIT; 1495 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1496 /* Allow .25s for motor to stabilize. */ 1497 callout_reset(&fd->sc_motoron_ch, hz / 4, 1498 fd_motor_on, fd); 1499 } else { 1500 fd->sc_flags &= ~FD_MOTOR_WAIT; 1501 goto loop; 1502 } 1503 return (1); 1504 } 1505 /* Make sure the right drive is selected. */ 1506 fd_set_motor(fdc); 1507 1508 if (fdc_diskchange(fdc)) 1509 goto dodskchg; 1510 1511 /*FALLTHROUGH*/ 1512 case DOSEEK: 1513 doseek: 1514 if ((fdc->sc_flags & FDC_EIS) && 1515 (bp->b_flags & B_FORMAT) == 0) { 1516 fd->sc_cylin = bp->b_cylinder; 1517 /* We use implied seek */ 1518 goto doio; 1519 } 1520 1521 if (fd->sc_cylin == bp->b_cylinder) 1522 goto doio; 1523 1524 fd->sc_cylin = -1; 1525 fdc->sc_state = SEEKWAIT; 1526 fdc->sc_nstat = 0; 1527 1528 iostat_seek(fd->sc_dk.dk_stats); 1529 1530 disk_busy(&fd->sc_dk); 1531 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1532 1533 /* specify command */ 1534 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1535 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1536 /* XXX head load time == 6ms */ 1537 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1538 1539 fdc->sc_itask = FDC_ITASK_SENSEI; 1540 /* seek function */ 1541 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1542 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1543 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1544 return (1); 1545 1546 case DODSKCHG: 1547 dodskchg: 1548 /* 1549 * Disk change: force a seek operation by going to cyl 1 1550 * followed by a recalibrate. 1551 */ 1552 disk_busy(&fd->sc_dk); 1553 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1554 fd->sc_cylin = -1; 1555 fdc->sc_nstat = 0; 1556 fdc->sc_state = DSKCHGWAIT; 1557 1558 fdc->sc_itask = FDC_ITASK_SENSEI; 1559 /* seek function */ 1560 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1561 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1562 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1563 return (1); 1564 1565 case DSKCHGWAIT: 1566 callout_stop(&fdc->sc_timo_ch); 1567 disk_unbusy(&fd->sc_dk, 0, 0); 1568 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1569 cyl != 1 * fd->sc_type->step) { 1570 fdcstatus(fdc, "dskchg seek failed"); 1571 fdc->sc_state = DORESET; 1572 } else 1573 fdc->sc_state = DORECAL; 1574 1575 if (fdc_diskchange(fdc)) { 1576 printf("%s: cannot clear disk change status\n", 1577 device_xname(fdc->sc_dev)); 1578 fdc->sc_state = DORESET; 1579 } 1580 goto loop; 1581 1582 case DOIO: 1583 doio: 1584 if (finfo != NULL) 1585 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1586 (char *)finfo; 1587 type = fd->sc_type; 1588 sec = fd->sc_blkno % type->seccyl; 1589 nblks = type->seccyl - sec; 1590 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1591 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1592 fd->sc_nblks = nblks; 1593 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1594 head = sec / type->sectrac; 1595 sec -= head * type->sectrac; 1596 #ifdef DIAGNOSTIC 1597 {int block; 1598 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1599 if (block != fd->sc_blkno) { 1600 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1601 #ifdef DDB 1602 Debugger(); 1603 #endif 1604 }} 1605 #endif 1606 read = bp->b_flags & B_READ; 1607 1608 /* Setup for pseudo DMA */ 1609 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1610 fdc->sc_tc = fd->sc_nbytes; 1611 1612 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1613 fdc->sc_reg_drs, type->rate); 1614 #ifdef FD_DEBUG 1615 if (fdc_debug > 1) 1616 printf("fdcstate: doio: %s drive %d " 1617 "track %d head %d sec %d nblks %d\n", 1618 finfo ? "format" : 1619 (read ? "read" : "write"), 1620 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1621 #endif 1622 fdc->sc_state = IOCOMPLETE; 1623 fdc->sc_itask = FDC_ITASK_DMA; 1624 fdc->sc_nstat = 0; 1625 1626 disk_busy(&fd->sc_dk); 1627 1628 /* allow 3 seconds for operation */ 1629 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1630 1631 if (finfo != NULL) { 1632 /* formatting */ 1633 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1634 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1635 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1636 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1637 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1638 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1639 } else { 1640 if (read) 1641 FDC_WRFIFO(fdc, NE7CMD_READ); 1642 else 1643 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1644 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1645 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1646 FDC_WRFIFO(fdc, head); 1647 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1648 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1649 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1650 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1651 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1652 } 1653 1654 return (1); /* will return later */ 1655 1656 case SEEKWAIT: 1657 callout_stop(&fdc->sc_timo_ch); 1658 fdc->sc_state = SEEKCOMPLETE; 1659 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1660 /* allow 1/50 second for heads to settle */ 1661 callout_reset(&fdc->sc_intr_ch, hz / 50, 1662 fdcpseudointr, fdc); 1663 return (1); /* will return later */ 1664 } 1665 /*FALLTHROUGH*/ 1666 case SEEKCOMPLETE: 1667 /* no data on seek */ 1668 disk_unbusy(&fd->sc_dk, 0, 0); 1669 1670 /* Make sure seek really happened. */ 1671 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1672 cyl != bp->b_cylinder * fd->sc_type->step) { 1673 #ifdef FD_DEBUG 1674 if (fdc_debug) 1675 fdcstatus(fdc, "seek failed"); 1676 #endif 1677 fdcretry(fdc); 1678 goto loop; 1679 } 1680 fd->sc_cylin = bp->b_cylinder; 1681 goto doio; 1682 1683 case IOTIMEDOUT: 1684 /* 1685 * Try to abort the I/O operation without resetting 1686 * the chip first. Poke TC and arrange to pick up 1687 * the timed out I/O command's status. 1688 */ 1689 fdc->sc_itask = FDC_ITASK_RESULT; 1690 fdc->sc_state = IOCLEANUPWAIT; 1691 fdc->sc_nstat = 0; 1692 /* 1/10 second should be enough */ 1693 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1694 FTC_FLIP; 1695 return (1); 1696 1697 case IOCLEANUPTIMEDOUT: 1698 case SEEKTIMEDOUT: 1699 case RECALTIMEDOUT: 1700 case RESETTIMEDOUT: 1701 case DSKCHGTIMEDOUT: 1702 fdcstatus(fdc, "timeout"); 1703 1704 /* All other timeouts always roll through to a chip reset */ 1705 fdcretry(fdc); 1706 1707 /* Force reset, no matter what fdcretry() says */ 1708 fdc->sc_state = DORESET; 1709 goto loop; 1710 1711 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1712 callout_stop(&fdc->sc_timo_ch); 1713 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1714 (bp->b_flags & B_READ)); 1715 fdcretry(fdc); 1716 goto loop; 1717 1718 case IOCOMPLETE: /* IO DONE, post-analyze */ 1719 callout_stop(&fdc->sc_timo_ch); 1720 1721 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1722 (bp->b_flags & B_READ)); 1723 1724 if (fdc->sc_nstat != 7 || st1 != 0 || 1725 ((st0 & 0xf8) != 0 && 1726 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1727 #ifdef FD_DEBUG 1728 if (fdc_debug) { 1729 fdcstatus(fdc, 1730 bp->b_flags & B_READ 1731 ? "read failed" : "write failed"); 1732 printf("blkno %lld nblks %d nstat %d tc %d\n", 1733 (long long)fd->sc_blkno, fd->sc_nblks, 1734 fdc->sc_nstat, fdc->sc_tc); 1735 } 1736 #endif 1737 if (fdc->sc_nstat == 7 && 1738 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1739 1740 /* 1741 * Silently retry overruns if no other 1742 * error bit is set. Adjust threshold. 1743 */ 1744 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1745 if (thr < 15) { 1746 thr++; 1747 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1748 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1749 #ifdef FD_DEBUG 1750 if (fdc_debug) 1751 printf("fdc: %d -> threshold\n", thr); 1752 #endif 1753 fdconf(fdc); 1754 fdc->sc_overruns = 0; 1755 } 1756 if (++fdc->sc_overruns < 3) { 1757 fdc->sc_state = DOIO; 1758 goto loop; 1759 } 1760 } 1761 fdcretry(fdc); 1762 goto loop; 1763 } 1764 if (fdc->sc_errors) { 1765 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1766 fd->sc_skip / FD_BSIZE(fd), 1767 (struct disklabel *)NULL); 1768 printf("\n"); 1769 fdc->sc_errors = 0; 1770 } else { 1771 if (--fdc->sc_overruns < -20) { 1772 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1773 if (thr > 0) { 1774 thr--; 1775 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1776 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1777 #ifdef FD_DEBUG 1778 if (fdc_debug) 1779 printf("fdc: %d -> threshold\n", thr); 1780 #endif 1781 fdconf(fdc); 1782 } 1783 fdc->sc_overruns = 0; 1784 } 1785 } 1786 fd->sc_blkno += fd->sc_nblks; 1787 fd->sc_skip += fd->sc_nbytes; 1788 fd->sc_bcount -= fd->sc_nbytes; 1789 if (finfo == NULL && fd->sc_bcount > 0) { 1790 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1791 goto doseek; 1792 } 1793 fdfinish(fd, bp); 1794 goto loop; 1795 1796 case DORESET: 1797 /* try a reset, keep motor on */ 1798 fd_set_motor(fdc); 1799 delay(100); 1800 fdc->sc_nstat = 0; 1801 fdc->sc_itask = FDC_ITASK_SENSEI; 1802 fdc->sc_state = RESETCOMPLETE; 1803 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1804 fdc_reset(fdc); 1805 return (1); /* will return later */ 1806 1807 case RESETCOMPLETE: 1808 callout_stop(&fdc->sc_timo_ch); 1809 fdconf(fdc); 1810 1811 /* FALLTHROUGH */ 1812 case DORECAL: 1813 fdc->sc_state = RECALWAIT; 1814 fdc->sc_itask = FDC_ITASK_SENSEI; 1815 fdc->sc_nstat = 0; 1816 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1817 /* recalibrate function */ 1818 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1819 FDC_WRFIFO(fdc, fd->sc_drive); 1820 return (1); /* will return later */ 1821 1822 case RECALWAIT: 1823 callout_stop(&fdc->sc_timo_ch); 1824 fdc->sc_state = RECALCOMPLETE; 1825 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1826 /* allow 1/30 second for heads to settle */ 1827 callout_reset(&fdc->sc_intr_ch, hz / 30, 1828 fdcpseudointr, fdc); 1829 return (1); /* will return later */ 1830 } 1831 1832 case RECALCOMPLETE: 1833 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1834 #ifdef FD_DEBUG 1835 if (fdc_debug) 1836 fdcstatus(fdc, "recalibrate failed"); 1837 #endif 1838 fdcretry(fdc); 1839 goto loop; 1840 } 1841 fd->sc_cylin = 0; 1842 goto doseek; 1843 1844 case MOTORWAIT: 1845 if (fd->sc_flags & FD_MOTOR_WAIT) 1846 return (1); /* time's not up yet */ 1847 goto doseek; 1848 1849 default: 1850 fdcstatus(fdc, "stray interrupt"); 1851 return (1); 1852 } 1853 #ifdef DIAGNOSTIC 1854 panic("fdcintr: impossible"); 1855 #endif 1856 1857 xxx: 1858 /* 1859 * We get here if the chip locks up in FDC_WRFIFO() 1860 * Cancel any operation and schedule a reset 1861 */ 1862 callout_stop(&fdc->sc_timo_ch); 1863 fdcretry(fdc); 1864 (fdc)->sc_state = DORESET; 1865 goto loop; 1866 1867 #undef st0 1868 #undef st1 1869 #undef cyl 1870 } 1871 1872 void 1873 fdcretry(struct fdc_softc *fdc) 1874 { 1875 struct fd_softc *fd; 1876 struct buf *bp; 1877 int error = EIO; 1878 1879 fd = fdc->sc_drives.tqh_first; 1880 bp = bufq_peek(fd->sc_q); 1881 1882 fdc->sc_overruns = 0; 1883 if (fd->sc_opts & FDOPT_NORETRY) 1884 goto fail; 1885 1886 switch (fdc->sc_errors) { 1887 case 0: 1888 if (fdc->sc_nstat == 7 && 1889 (fdc->sc_status[0] & 0xd8) == 0x40 && 1890 (fdc->sc_status[1] & 0x2) == 0x2) { 1891 printf("%s: read-only medium\n", 1892 device_xname(fd->sc_dv)); 1893 error = EROFS; 1894 goto failsilent; 1895 } 1896 /* try again */ 1897 fdc->sc_state = 1898 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1899 break; 1900 1901 case 1: case 2: case 3: 1902 /* didn't work; try recalibrating */ 1903 fdc->sc_state = DORECAL; 1904 break; 1905 1906 case 4: 1907 if (fdc->sc_nstat == 7 && 1908 fdc->sc_status[0] == 0 && 1909 fdc->sc_status[1] == 0 && 1910 fdc->sc_status[2] == 0) { 1911 /* 1912 * We've retried a few times and we've got 1913 * valid status and all three status bytes 1914 * are zero. Assume this condition is the 1915 * result of no disk loaded into the drive. 1916 */ 1917 printf("%s: no medium?\n", 1918 device_xname(fd->sc_dv)); 1919 error = ENODEV; 1920 goto failsilent; 1921 } 1922 1923 /* still no go; reset the bastard */ 1924 fdc->sc_state = DORESET; 1925 break; 1926 1927 default: 1928 fail: 1929 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1930 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1931 fd->sc_skip / FD_BSIZE(fd), 1932 (struct disklabel *)NULL); 1933 printf("\n"); 1934 fdcstatus(fdc, "controller status"); 1935 } 1936 1937 failsilent: 1938 bp->b_error = error; 1939 fdfinish(fd, bp); 1940 } 1941 fdc->sc_errors++; 1942 } 1943 1944 int 1945 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1946 { 1947 struct fd_softc *fd; 1948 struct fdc_softc *fdc; 1949 struct fdformat_parms *form_parms; 1950 struct fdformat_cmd *form_cmd; 1951 struct ne7_fd_formb *fd_formb; 1952 int il[FD_MAX_NSEC + 1]; 1953 int unit; 1954 int i, j; 1955 int error; 1956 1957 unit = FDUNIT(dev); 1958 if (unit >= fd_cd.cd_ndevs) 1959 return (ENXIO); 1960 1961 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1962 fdc = device_private(device_parent(fd->sc_dv)); 1963 1964 switch (cmd) { 1965 case DIOCGDINFO: 1966 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1967 return 0; 1968 1969 case DIOCWLABEL: 1970 if ((flag & FWRITE) == 0) 1971 return EBADF; 1972 /* XXX do something */ 1973 return (0); 1974 1975 case DIOCWDINFO: 1976 if ((flag & FWRITE) == 0) 1977 return (EBADF); 1978 1979 error = setdisklabel(fd->sc_dk.dk_label, 1980 (struct disklabel *)addr, 0, 1981 fd->sc_dk.dk_cpulabel); 1982 if (error) 1983 return (error); 1984 1985 error = writedisklabel(dev, fdstrategy, 1986 fd->sc_dk.dk_label, 1987 fd->sc_dk.dk_cpulabel); 1988 return (error); 1989 1990 case DIOCLOCK: 1991 /* 1992 * Nothing to do here, really. 1993 */ 1994 return (0); 1995 1996 case DIOCEJECT: 1997 if (*(int *)addr == 0) { 1998 int part = DISKPART(dev); 1999 /* 2000 * Don't force eject: check that we are the only 2001 * partition open. If so, unlock it. 2002 */ 2003 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2004 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2005 fd->sc_dk.dk_openmask) { 2006 return (EBUSY); 2007 } 2008 } 2009 /* FALLTHROUGH */ 2010 case ODIOCEJECT: 2011 fd_do_eject(fd); 2012 return (0); 2013 2014 case FDIOCGETFORMAT: 2015 form_parms = (struct fdformat_parms *)addr; 2016 form_parms->fdformat_version = FDFORMAT_VERSION; 2017 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2018 form_parms->ncyl = fd->sc_type->cylinders; 2019 form_parms->nspt = fd->sc_type->sectrac; 2020 form_parms->ntrk = fd->sc_type->heads; 2021 form_parms->stepspercyl = fd->sc_type->step; 2022 form_parms->gaplen = fd->sc_type->gap2; 2023 form_parms->fillbyte = fd->sc_type->fillbyte; 2024 form_parms->interleave = fd->sc_type->interleave; 2025 switch (fd->sc_type->rate) { 2026 case FDC_500KBPS: 2027 form_parms->xfer_rate = 500 * 1024; 2028 break; 2029 case FDC_300KBPS: 2030 form_parms->xfer_rate = 300 * 1024; 2031 break; 2032 case FDC_250KBPS: 2033 form_parms->xfer_rate = 250 * 1024; 2034 break; 2035 default: 2036 return (EINVAL); 2037 } 2038 return (0); 2039 2040 case FDIOCSETFORMAT: 2041 if ((flag & FWRITE) == 0) 2042 return (EBADF); /* must be opened for writing */ 2043 2044 form_parms = (struct fdformat_parms *)addr; 2045 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2046 return (EINVAL);/* wrong version of formatting prog */ 2047 2048 i = form_parms->nbps >> 7; 2049 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2050 i & ~(1 << (ffs(i)-1))) 2051 /* not a power-of-two multiple of 128 */ 2052 return (EINVAL); 2053 2054 switch (form_parms->xfer_rate) { 2055 case 500 * 1024: 2056 fd->sc_type->rate = FDC_500KBPS; 2057 break; 2058 case 300 * 1024: 2059 fd->sc_type->rate = FDC_300KBPS; 2060 break; 2061 case 250 * 1024: 2062 fd->sc_type->rate = FDC_250KBPS; 2063 break; 2064 default: 2065 return (EINVAL); 2066 } 2067 2068 if (form_parms->nspt > FD_MAX_NSEC || 2069 form_parms->fillbyte > 0xff || 2070 form_parms->interleave > 0xff) 2071 return EINVAL; 2072 fd->sc_type->sectrac = form_parms->nspt; 2073 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2074 return EINVAL; 2075 fd->sc_type->heads = form_parms->ntrk; 2076 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2077 fd->sc_type->secsize = ffs(i)-1; 2078 fd->sc_type->gap2 = form_parms->gaplen; 2079 fd->sc_type->cylinders = form_parms->ncyl; 2080 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2081 form_parms->nbps / DEV_BSIZE; 2082 fd->sc_type->step = form_parms->stepspercyl; 2083 fd->sc_type->fillbyte = form_parms->fillbyte; 2084 fd->sc_type->interleave = form_parms->interleave; 2085 return (0); 2086 2087 case FDIOCFORMAT_TRACK: 2088 if((flag & FWRITE) == 0) 2089 /* must be opened for writing */ 2090 return (EBADF); 2091 form_cmd = (struct fdformat_cmd *)addr; 2092 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2093 /* wrong version of formatting prog */ 2094 return (EINVAL); 2095 2096 if (form_cmd->head >= fd->sc_type->heads || 2097 form_cmd->cylinder >= fd->sc_type->cylinders) { 2098 return (EINVAL); 2099 } 2100 2101 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2102 M_TEMP, M_NOWAIT); 2103 if (fd_formb == 0) 2104 return (ENOMEM); 2105 2106 fd_formb->head = form_cmd->head; 2107 fd_formb->cyl = form_cmd->cylinder; 2108 fd_formb->transfer_rate = fd->sc_type->rate; 2109 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2110 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2111 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2112 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2113 2114 memset(il, 0, sizeof il); 2115 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2116 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2117 j++; 2118 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2119 j += fd->sc_type->interleave; 2120 } 2121 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2122 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2123 fd_formb->fd_formb_headno(i) = form_cmd->head; 2124 fd_formb->fd_formb_secno(i) = il[i+1]; 2125 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2126 } 2127 2128 error = fdformat(dev, fd_formb, l->l_proc); 2129 free(fd_formb, M_TEMP); 2130 return error; 2131 2132 case FDIOCGETOPTS: /* get drive options */ 2133 *(int *)addr = fd->sc_opts; 2134 return (0); 2135 2136 case FDIOCSETOPTS: /* set drive options */ 2137 fd->sc_opts = *(int *)addr; 2138 return (0); 2139 2140 #ifdef FD_DEBUG 2141 case _IO('f', 100): 2142 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2143 fdcresult(fdc); 2144 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2145 for (i = 0; i < fdc->sc_nstat; i++) 2146 printf(" 0x%x", fdc->sc_status[i]); 2147 printf(">\n"); 2148 return (0); 2149 2150 case _IOW('f', 101, int): 2151 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2152 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2153 fdconf(fdc); 2154 return (0); 2155 2156 case _IO('f', 102): 2157 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2158 fdcresult(fdc); 2159 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2160 for (i=0; i< fdc->sc_nstat; i++) 2161 printf(" 0x%x", fdc->sc_status[i]); 2162 printf(">\n"); 2163 return (0); 2164 #endif 2165 default: 2166 return (ENOTTY); 2167 } 2168 2169 #ifdef DIAGNOSTIC 2170 panic("fdioctl: impossible"); 2171 #endif 2172 } 2173 2174 int 2175 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2176 { 2177 int rv = 0; 2178 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2179 struct fd_type *type = fd->sc_type; 2180 struct buf *bp; 2181 2182 /* set up a buffer header for fdstrategy() */ 2183 bp = getiobuf(NULL, false); 2184 if (bp == NULL) 2185 return (ENOBUFS); 2186 2187 bp->b_vp = NULL; 2188 bp->b_cflags = BC_BUSY; 2189 bp->b_flags = B_PHYS | B_FORMAT; 2190 bp->b_proc = p; 2191 bp->b_dev = dev; 2192 2193 /* 2194 * Calculate a fake blkno, so fdstrategy() would initiate a 2195 * seek to the requested cylinder. 2196 */ 2197 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2198 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2199 / DEV_BSIZE; 2200 2201 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2202 bp->b_data = (void *)finfo; 2203 2204 #ifdef FD_DEBUG 2205 if (fdc_debug) { 2206 int i; 2207 2208 printf("fdformat: blkno 0x%llx count %d\n", 2209 (unsigned long long)bp->b_blkno, bp->b_bcount); 2210 2211 printf("\tcyl:\t%d\n", finfo->cyl); 2212 printf("\thead:\t%d\n", finfo->head); 2213 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2214 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2215 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2216 printf("\ttrack data:"); 2217 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2218 printf(" [c%d h%d s%d]", 2219 finfo->fd_formb_cylno(i), 2220 finfo->fd_formb_headno(i), 2221 finfo->fd_formb_secno(i) ); 2222 if (finfo->fd_formb_secsize(i) != 2) 2223 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2224 } 2225 printf("\n"); 2226 } 2227 #endif 2228 2229 /* now do the format */ 2230 fdstrategy(bp); 2231 2232 /* ...and wait for it to complete */ 2233 rv = biowait(bp); 2234 putiobuf(bp); 2235 return (rv); 2236 } 2237 2238 void 2239 fdgetdisklabel(dev_t dev) 2240 { 2241 int unit = FDUNIT(dev), i; 2242 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2243 struct disklabel *lp = fd->sc_dk.dk_label; 2244 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2245 2246 memset(lp, 0, sizeof(struct disklabel)); 2247 memset(clp, 0, sizeof(struct cpu_disklabel)); 2248 2249 lp->d_type = DKTYPE_FLOPPY; 2250 lp->d_secsize = FD_BSIZE(fd); 2251 lp->d_secpercyl = fd->sc_type->seccyl; 2252 lp->d_nsectors = fd->sc_type->sectrac; 2253 lp->d_ncylinders = fd->sc_type->cylinders; 2254 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2255 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2256 lp->d_rpm = 3600; /* XXX like it matters... */ 2257 2258 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2259 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2260 lp->d_interleave = 1; 2261 2262 lp->d_partitions[RAW_PART].p_offset = 0; 2263 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2264 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2265 lp->d_npartitions = RAW_PART + 1; 2266 2267 lp->d_magic = DISKMAGIC; 2268 lp->d_magic2 = DISKMAGIC; 2269 lp->d_checksum = dkcksum(lp); 2270 2271 /* 2272 * Call the generic disklabel extraction routine. If there's 2273 * not a label there, fake it. 2274 */ 2275 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2276 strncpy(lp->d_packname, "default label", 2277 sizeof(lp->d_packname)); 2278 /* 2279 * Reset the partition info; it might have gotten 2280 * trashed in readdisklabel(). 2281 * 2282 * XXX Why do we have to do this? readdisklabel() 2283 * should be safe... 2284 */ 2285 for (i = 0; i < MAXPARTITIONS; ++i) { 2286 lp->d_partitions[i].p_offset = 0; 2287 if (i == RAW_PART) { 2288 lp->d_partitions[i].p_size = 2289 lp->d_secpercyl * lp->d_ncylinders; 2290 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2291 } else { 2292 lp->d_partitions[i].p_size = 0; 2293 lp->d_partitions[i].p_fstype = FS_UNUSED; 2294 } 2295 } 2296 lp->d_npartitions = RAW_PART + 1; 2297 } 2298 } 2299 2300 void 2301 fd_do_eject(struct fd_softc *fd) 2302 { 2303 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 2304 2305 if (CPU_ISSUN4C) { 2306 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2307 delay(10); 2308 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2309 return; 2310 } 2311 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2312 bus_space_tag_t t = fdc->sc_bustag; 2313 bus_space_handle_t h = fdc->sc_handle; 2314 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2315 2316 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2317 delay(10); 2318 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2319 return; 2320 } 2321 } 2322 2323 /* ARGSUSED */ 2324 void 2325 fd_mountroot_hook(device_t dev) 2326 { 2327 int c; 2328 2329 fd_do_eject(device_private(dev)); 2330 printf("Insert filesystem floppy and press return."); 2331 for (;;) { 2332 c = cngetc(); 2333 if ((c == '\r') || (c == '\n')) { 2334 printf("\n"); 2335 break; 2336 } 2337 } 2338 } 2339 2340 #ifdef MEMORY_DISK_HOOKS 2341 2342 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2343 2344 int 2345 fd_read_md_image(size_t *sizep, void * *addrp) 2346 { 2347 struct buf buf, *bp = &buf; 2348 dev_t dev; 2349 off_t offset; 2350 void *addr; 2351 2352 dev = makedev(54,0); /* XXX */ 2353 2354 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2355 *addrp = addr; 2356 2357 if (fdopen(dev, 0, S_IFCHR, NULL)) 2358 panic("fd: mountroot: fdopen"); 2359 2360 offset = 0; 2361 2362 for (;;) { 2363 bp->b_dev = dev; 2364 bp->b_error = 0; 2365 bp->b_resid = 0; 2366 bp->b_proc = NULL; 2367 bp->b_cflags |= BC_BUSY; 2368 bp->b_flags = B_PHYS | B_RAW | B_READ; 2369 bp->b_blkno = btodb(offset); 2370 bp->b_bcount = DEV_BSIZE; 2371 bp->b_data = addr; 2372 fdstrategy(bp); 2373 biowait(bp); 2374 if (bp->b_error) 2375 panic("fd: mountroot: fdread error %d", bp->b_error); 2376 2377 if (bp->b_resid != 0) 2378 break; 2379 2380 addr = (char *)addr + DEV_BSIZE; 2381 offset += DEV_BSIZE; 2382 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2383 break; 2384 } 2385 (void)fdclose(dev, 0, S_IFCHR, NULL); 2386 *sizep = offset; 2387 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2388 return (0); 2389 } 2390 #endif /* MEMORY_DISK_HOOKS */ 2391
Indexes created Fri Oct 03 02:09:57 GMT 2025