fd.c revision 1.153
1 /* $NetBSD: fd.c,v 1.153 2014/07/25 08:02:18 dholland 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 1.153 2014/07/25 08:02:18 dholland 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_flag = D_DISK 332 }; 333 334 void fdgetdisklabel(dev_t); 335 int fd_get_parms(struct fd_softc *); 336 void fdstart(struct fd_softc *); 337 int fdprint(void *, const char *); 338 339 struct dkdriver fddkdriver = { fdstrategy }; 340 341 struct fd_type *fd_nvtotype(char *, int, int); 342 void fd_set_motor(struct fdc_softc *); 343 void fd_motor_off(void *); 344 void fd_motor_on(void *); 345 int fdcresult(struct fdc_softc *); 346 int fdc_wrfifo(struct fdc_softc *, uint8_t); 347 void fdcstart(struct fdc_softc *); 348 void fdcstatus(struct fdc_softc *, const char *); 349 void fdc_reset(struct fdc_softc *); 350 int fdc_diskchange(struct fdc_softc *); 351 void fdctimeout(void *); 352 void fdcpseudointr(void *); 353 int fdc_c_hwintr(void *); 354 void fdchwintr(void); 355 void fdcswintr(void *); 356 int fdcstate(struct fdc_softc *); 357 void fdcretry(struct fdc_softc *); 358 void fdfinish(struct fd_softc *, struct buf *); 359 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 360 void fd_do_eject(struct fd_softc *); 361 void fd_mountroot_hook(device_t); 362 static int fdconf(struct fdc_softc *); 363 static void establish_chip_type( 364 struct fdc_softc *, 365 bus_space_tag_t, 366 bus_addr_t, 367 bus_size_t, 368 bus_space_handle_t); 369 370 #ifdef MEMORY_DISK_HOOKS 371 int fd_read_md_image(size_t *, void **); 372 #endif 373 374 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 375 376 int 377 fdcmatch_mainbus(device_t parent, cfdata_t match, void *aux) 378 { 379 struct mainbus_attach_args *ma = aux; 380 381 /* 382 * Floppy controller is on mainbus on sun4c. 383 */ 384 if (!CPU_ISSUN4C) 385 return (0); 386 387 /* sun4c PROMs call the controller "fd" */ 388 if (strcmp("fd", ma->ma_name) != 0) 389 return (0); 390 391 return (bus_space_probe(ma->ma_bustag, 392 ma->ma_paddr, 393 1, /* probe size */ 394 0, /* offset */ 395 0, /* flags */ 396 NULL, NULL)); 397 } 398 399 int 400 fdcmatch_obio(device_t parent, cfdata_t match, void *aux) 401 { 402 union obio_attach_args *uoba = aux; 403 struct sbus_attach_args *sa; 404 405 /* 406 * Floppy controller is on obio on sun4m. 407 */ 408 if (uoba->uoba_isobio4 != 0) 409 return (0); 410 411 sa = &uoba->uoba_sbus; 412 413 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 414 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 415 return (0); 416 417 return (bus_space_probe(sa->sa_bustag, 418 sbus_bus_addr(sa->sa_bustag, 419 sa->sa_slot, sa->sa_offset), 420 1, /* probe size */ 421 0, /* offset */ 422 0, /* flags */ 423 NULL, NULL)); 424 } 425 426 static void 427 establish_chip_type(struct fdc_softc *fdc, 428 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 429 bus_space_handle_t handle) 430 { 431 uint8_t v; 432 433 /* 434 * This hack from Chris Torek: apparently DOR really 435 * addresses MSR/DRS on a 82072. 436 * We used to rely on the VERSION command to tell the 437 * difference (which did not work). 438 */ 439 440 /* First, check the size of the register bank */ 441 if (size < 8) 442 /* It isn't a 82077 */ 443 return; 444 445 /* Then probe the DOR register offset */ 446 if (bus_space_probe(tag, addr, 447 1, /* probe size */ 448 FDREG77_DOR, /* offset */ 449 0, /* flags */ 450 NULL, NULL) == 0) { 451 452 /* It isn't a 82077 */ 453 return; 454 } 455 456 v = bus_space_read_1(tag, handle, FDREG77_DOR); 457 if (v == NE7_RQM) { 458 /* 459 * Value in DOR looks like it's really MSR 460 */ 461 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 462 v = bus_space_read_1(tag, handle, FDREG77_DOR); 463 if (v == NE7_RQM) { 464 /* 465 * The value in the DOR didn't stick; 466 * it isn't a 82077 467 */ 468 return; 469 } 470 } 471 472 fdc->sc_flags |= FDC_82077; 473 } 474 475 /* 476 * Arguments passed between fdcattach and fdprobe. 477 */ 478 struct fdc_attach_args { 479 int fa_drive; 480 struct fd_type *fa_deftype; 481 }; 482 483 /* 484 * Print the location of a disk drive (called just before attaching the 485 * the drive). If `fdc' is not NULL, the drive was found but was not 486 * in the system config file; print the drive name as well. 487 * Return QUIET (config_find ignores this if the device was configured) to 488 * avoid printing `fdN not configured' messages. 489 */ 490 int 491 fdprint(void *aux, const char *fdc) 492 { 493 register struct fdc_attach_args *fa = aux; 494 495 if (!fdc) 496 aprint_normal(" drive %d", fa->fa_drive); 497 return (QUIET); 498 } 499 500 /* 501 * Configure several parameters and features on the FDC. 502 * Return 0 on success. 503 */ 504 static int 505 fdconf(struct fdc_softc *fdc) 506 { 507 int vroom; 508 509 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 510 return (-1); 511 512 /* 513 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 514 * the PROM thinks is appropriate. 515 */ 516 if ((vroom = fdc->sc_status[7]) == 0) 517 vroom = 0x64; 518 519 /* Configure controller to use FIFO and Implied Seek */ 520 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 521 return (-1); 522 if (fdc_wrfifo(fdc, vroom) != 0) 523 return (-1); 524 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 525 return (-1); 526 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 527 return (-1); 528 /* No result phase for the NE7CMD_CFG command */ 529 530 if ((fdc->sc_flags & FDC_82077) != 0) { 531 /* Lock configuration across soft resets. */ 532 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 533 fdcresult(fdc) != 1) { 534 #ifdef DEBUG 535 printf("fdconf: CFGLOCK failed"); 536 #endif 537 return (-1); 538 } 539 } 540 541 return (0); 542 #if 0 543 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 544 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 545 if (fdc_debug) 546 printf("[version cmd]"); 547 } 548 #endif 549 } 550 551 void 552 fdcattach_mainbus(device_t parent, device_t self, void *aux) 553 { 554 struct fdc_softc *fdc = device_private(self); 555 struct mainbus_attach_args *ma = aux; 556 557 fdc->sc_dev = self; 558 fdc->sc_bustag = ma->ma_bustag; 559 560 if (bus_space_map( 561 ma->ma_bustag, 562 ma->ma_paddr, 563 ma->ma_size, 564 BUS_SPACE_MAP_LINEAR, 565 &fdc->sc_handle) != 0) { 566 printf("%s: cannot map registers\n", device_xname(self)); 567 return; 568 } 569 570 establish_chip_type(fdc, 571 ma->ma_bustag, 572 ma->ma_paddr, 573 ma->ma_size, 574 fdc->sc_handle); 575 576 if (fdcattach(fdc, ma->ma_pri) != 0) 577 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 578 } 579 580 void 581 fdcattach_obio(device_t parent, device_t self, void *aux) 582 { 583 struct fdc_softc *fdc = device_private(self); 584 union obio_attach_args *uoba = aux; 585 struct sbus_attach_args *sa = &uoba->uoba_sbus; 586 587 if (sa->sa_nintr == 0) { 588 printf(": no interrupt line configured\n"); 589 return; 590 } 591 592 fdc->sc_dev = self; 593 fdc->sc_bustag = sa->sa_bustag; 594 595 if (sbus_bus_map(sa->sa_bustag, 596 sa->sa_slot, sa->sa_offset, sa->sa_size, 597 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 598 printf("%s: cannot map control registers\n", 599 device_xname(self)); 600 return; 601 } 602 603 establish_chip_type(fdc, 604 sa->sa_bustag, 605 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 606 sa->sa_size, 607 fdc->sc_handle); 608 609 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 610 printf(": no drives attached\n"); 611 return; 612 } 613 614 if (fdcattach(fdc, sa->sa_pri) != 0) 615 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 616 } 617 618 int 619 fdcattach(struct fdc_softc *fdc, int pri) 620 { 621 struct fdc_attach_args fa; 622 int drive_attached; 623 char code; 624 625 callout_init(&fdc->sc_timo_ch, 0); 626 callout_init(&fdc->sc_intr_ch, 0); 627 628 fdc->sc_state = DEVIDLE; 629 fdc->sc_itask = FDC_ITASK_NONE; 630 fdc->sc_istatus = FDC_ISTATUS_NONE; 631 fdc->sc_flags |= FDC_EIS; 632 TAILQ_INIT(&fdc->sc_drives); 633 634 if ((fdc->sc_flags & FDC_82077) != 0) { 635 fdc->sc_reg_msr = FDREG77_MSR; 636 fdc->sc_reg_fifo = FDREG77_FIFO; 637 fdc->sc_reg_dor = FDREG77_DOR; 638 fdc->sc_reg_dir = FDREG77_DIR; 639 code = '7'; 640 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 641 } else { 642 fdc->sc_reg_msr = FDREG72_MSR; 643 fdc->sc_reg_fifo = FDREG72_FIFO; 644 fdc->sc_reg_dor = 0; 645 code = '2'; 646 } 647 648 /* 649 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 650 * Note: CFG_EFIFO is active-low, initial threshold value: 8 651 */ 652 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 653 if (fdconf(fdc) != 0) { 654 printf(": no drives attached\n"); 655 return (-1); 656 } 657 658 fdciop = &fdc->sc_io; 659 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 660 fdc_c_hwintr, fdc, 661 #ifdef notyet /* XXX bsd_fdintr.s needs to be fixed for MI softint(9) */ 662 fdchwintr 663 #else 664 NULL 665 #endif 666 ) == NULL) { 667 printf("\n%s: cannot register interrupt handler\n", 668 device_xname(fdc->sc_dev)); 669 return (-1); 670 } 671 672 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 673 if (fdc->sc_sicookie == NULL) { 674 printf("\n%s: cannot register soft interrupt handler\n", 675 device_xname(fdc->sc_dev)); 676 return (-1); 677 } 678 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 679 680 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 681 device_xname(fdc->sc_dev), "intr"); 682 683 /* physical limit: four drives per controller. */ 684 drive_attached = 0; 685 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 686 fa.fa_deftype = NULL; /* unknown */ 687 fa.fa_deftype = &fd_types[0]; /* XXX */ 688 if (config_found(fdc->sc_dev, (void *)&fa, fdprint) != NULL) 689 drive_attached = 1; 690 } 691 692 if (drive_attached == 0) { 693 /* XXX - dis-establish interrupts here */ 694 /* return (-1); */ 695 } 696 697 return (0); 698 } 699 700 int 701 fdmatch(device_t parent, cfdata_t match, void *aux) 702 { 703 struct fdc_softc *fdc = device_private(parent); 704 bus_space_tag_t t = fdc->sc_bustag; 705 bus_space_handle_t h = fdc->sc_handle; 706 struct fdc_attach_args *fa = aux; 707 int drive = fa->fa_drive; 708 int n, ok; 709 710 if (drive > 0) 711 /* XXX - for now, punt on more than one drive */ 712 return (0); 713 714 if ((fdc->sc_flags & FDC_82077) != 0) { 715 /* select drive and turn on motor */ 716 bus_space_write_1(t, h, fdc->sc_reg_dor, 717 drive | FDO_FRST | FDO_MOEN(drive)); 718 /* wait for motor to spin up */ 719 delay(250000); 720 } else { 721 auxregbisc(AUXIO4C_FDS, 0); 722 } 723 fdc->sc_nstat = 0; 724 fdc_wrfifo(fdc, NE7CMD_RECAL); 725 fdc_wrfifo(fdc, drive); 726 727 /* Wait for recalibration to complete */ 728 for (n = 0; n < 10000; n++) { 729 uint8_t v; 730 731 delay(1000); 732 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 733 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 734 /* wait a bit longer till device *really* is ready */ 735 delay(100000); 736 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 737 break; 738 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 739 /* 740 * Got `invalid command'; we interpret it 741 * to mean that the re-calibrate hasn't in 742 * fact finished yet 743 */ 744 continue; 745 break; 746 } 747 } 748 n = fdc->sc_nstat; 749 #ifdef FD_DEBUG 750 if (fdc_debug) { 751 int i; 752 printf("fdprobe: %d stati:", n); 753 for (i = 0; i < n; i++) 754 printf(" 0x%x", fdc->sc_status[i]); 755 printf("\n"); 756 } 757 #endif 758 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 759 760 /* turn off motor */ 761 if ((fdc->sc_flags & FDC_82077) != 0) { 762 /* deselect drive and turn motor off */ 763 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 764 } else { 765 auxregbisc(0, AUXIO4C_FDS); 766 } 767 768 return (ok); 769 } 770 771 /* 772 * Controller is working, and drive responded. Attach it. 773 */ 774 void 775 fdattach(device_t parent, device_t self, void *aux) 776 { 777 struct fdc_softc *fdc = device_private(parent); 778 struct fd_softc *fd = device_private(self); 779 struct fdc_attach_args *fa = aux; 780 struct fd_type *type = fa->fa_deftype; 781 int drive = fa->fa_drive; 782 783 fd->sc_dv = self; 784 785 callout_init(&fd->sc_motoron_ch, 0); 786 callout_init(&fd->sc_motoroff_ch, 0); 787 788 /* XXX Allow `flags' to override device type? */ 789 790 if (type) 791 printf(": %s %d cyl, %d head, %d sec\n", type->name, 792 type->cylinders, type->heads, type->sectrac); 793 else 794 printf(": density unknown\n"); 795 796 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 797 fd->sc_cylin = -1; 798 fd->sc_drive = drive; 799 fd->sc_deftype = type; 800 fdc->sc_fd[drive] = fd; 801 802 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 803 fdc_wrfifo(fdc, type->steprate); 804 /* XXX head load time == 6ms */ 805 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 806 807 /* 808 * Initialize and attach the disk structure. 809 */ 810 disk_init(&fd->sc_dk, device_xname(fd->sc_dv), &fddkdriver); 811 disk_attach(&fd->sc_dk); 812 813 /* 814 * Establish a mountroot_hook anyway in case we booted 815 * with RB_ASKNAME and get selected as the boot device. 816 */ 817 mountroothook_establish(fd_mountroot_hook, fd->sc_dv); 818 819 /* Make sure the drive motor gets turned off at shutdown time. */ 820 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 821 aprint_error_dev(self, "couldn't establish power handler\n"); 822 } 823 824 bool fdshutdown(device_t self, int how) 825 { 826 struct fd_softc *fd = device_private(self); 827 828 fd_motor_off(fd); 829 return true; 830 } 831 832 bool fdsuspend(device_t self, const pmf_qual_t *qual) 833 { 834 835 return fdshutdown(self, boothowto); 836 } 837 838 839 inline struct fd_type * 840 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 841 { 842 int type = FDTYPE(dev); 843 844 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 845 return (NULL); 846 return (type ? &fd_types[type - 1] : fd->sc_deftype); 847 } 848 849 void 850 fdstrategy(struct buf *bp) 851 { 852 struct fd_softc *fd; 853 int unit = FDUNIT(bp->b_dev); 854 int sz; 855 int s; 856 857 /* Valid unit, controller, and request? */ 858 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 859 bp->b_blkno < 0 || 860 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 861 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 862 (bp->b_flags & B_FORMAT) == 0)) { 863 bp->b_error = EINVAL; 864 goto done; 865 } 866 867 /* If it's a null transfer, return immediately. */ 868 if (bp->b_bcount == 0) 869 goto done; 870 871 sz = howmany(bp->b_bcount, DEV_BSIZE); 872 873 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 874 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 875 - bp->b_blkno; 876 if (sz == 0) { 877 /* If exactly at end of disk, return EOF. */ 878 bp->b_resid = bp->b_bcount; 879 goto done; 880 } 881 if (sz < 0) { 882 /* If past end of disk, return EINVAL. */ 883 bp->b_error = EINVAL; 884 goto done; 885 } 886 /* Otherwise, truncate request. */ 887 bp->b_bcount = sz << DEV_BSHIFT; 888 } 889 890 bp->b_rawblkno = bp->b_blkno; 891 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 892 (FD_BSIZE(fd) * fd->sc_type->seccyl); 893 894 #ifdef FD_DEBUG 895 if (fdc_debug > 1) 896 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 897 (long long)bp->b_blkno, bp->b_bcount, 898 (long long)fd->sc_blkno, bp->b_cylinder); 899 #endif 900 901 /* Queue transfer on drive, activate drive and controller if idle. */ 902 s = splbio(); 903 bufq_put(fd->sc_q, bp); 904 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 905 if (fd->sc_active == 0) 906 fdstart(fd); 907 #ifdef DIAGNOSTIC 908 else { 909 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 910 if (fdc->sc_state == DEVIDLE) { 911 printf("fdstrategy: controller inactive\n"); 912 fdcstart(fdc); 913 } 914 } 915 #endif 916 splx(s); 917 return; 918 919 done: 920 /* Toss transfer; we're done early. */ 921 biodone(bp); 922 } 923 924 void 925 fdstart(struct fd_softc *fd) 926 { 927 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 928 int active = fdc->sc_drives.tqh_first != 0; 929 930 /* Link into controller queue. */ 931 fd->sc_active = 1; 932 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 933 934 /* If controller not already active, start it. */ 935 if (!active) 936 fdcstart(fdc); 937 } 938 939 void 940 fdfinish(struct fd_softc *fd, struct buf *bp) 941 { 942 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 943 944 /* 945 * Move this drive to the end of the queue to give others a `fair' 946 * chance. We only force a switch if N operations are completed while 947 * another drive is waiting to be serviced, since there is a long motor 948 * startup delay whenever we switch. 949 */ 950 (void)bufq_get(fd->sc_q); 951 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 952 fd->sc_ops = 0; 953 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 954 if (bufq_peek(fd->sc_q) != NULL) { 955 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 956 } else 957 fd->sc_active = 0; 958 } 959 bp->b_resid = fd->sc_bcount; 960 fd->sc_skip = 0; 961 962 biodone(bp); 963 /* turn off motor 5s from now */ 964 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 965 fdc->sc_state = DEVIDLE; 966 } 967 968 void 969 fdc_reset(struct fdc_softc *fdc) 970 { 971 bus_space_tag_t t = fdc->sc_bustag; 972 bus_space_handle_t h = fdc->sc_handle; 973 974 if ((fdc->sc_flags & FDC_82077) != 0) { 975 bus_space_write_1(t, h, fdc->sc_reg_dor, 976 FDO_FDMAEN | FDO_MOEN(0)); 977 } 978 979 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 980 delay(10); 981 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 982 983 if ((fdc->sc_flags & FDC_82077) != 0) { 984 bus_space_write_1(t, h, fdc->sc_reg_dor, 985 FDO_FRST | FDO_FDMAEN | FDO_DS); 986 } 987 #ifdef FD_DEBUG 988 if (fdc_debug) 989 printf("fdc reset\n"); 990 #endif 991 } 992 993 void 994 fd_set_motor(struct fdc_softc *fdc) 995 { 996 struct fd_softc *fd; 997 u_char status; 998 int n; 999 1000 if ((fdc->sc_flags & FDC_82077) != 0) { 1001 status = FDO_FRST | FDO_FDMAEN; 1002 if ((fd = fdc->sc_drives.tqh_first) != NULL) 1003 status |= fd->sc_drive; 1004 1005 for (n = 0; n < 4; n++) 1006 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 1007 status |= FDO_MOEN(n); 1008 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1009 fdc->sc_reg_dor, status); 1010 } else { 1011 1012 for (n = 0; n < 4; n++) { 1013 if ((fd = fdc->sc_fd[n]) != NULL && 1014 (fd->sc_flags & FD_MOTOR) != 0) { 1015 auxregbisc(AUXIO4C_FDS, 0); 1016 return; 1017 } 1018 } 1019 auxregbisc(0, AUXIO4C_FDS); 1020 } 1021 } 1022 1023 void 1024 fd_motor_off(void *arg) 1025 { 1026 struct fd_softc *fd = arg; 1027 int s; 1028 1029 s = splbio(); 1030 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1031 fd_set_motor(device_private(device_parent(fd->sc_dv))); 1032 splx(s); 1033 } 1034 1035 void 1036 fd_motor_on(void *arg) 1037 { 1038 struct fd_softc *fd = arg; 1039 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 1040 int s; 1041 1042 s = splbio(); 1043 fd->sc_flags &= ~FD_MOTOR_WAIT; 1044 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1045 (void) fdcstate(fdc); 1046 splx(s); 1047 } 1048 1049 /* 1050 * Get status bytes off the FDC after a command has finished 1051 * Returns the number of status bytes read; -1 on error. 1052 * The return value is also stored in `sc_nstat'. 1053 */ 1054 int 1055 fdcresult(struct fdc_softc *fdc) 1056 { 1057 bus_space_tag_t t = fdc->sc_bustag; 1058 bus_space_handle_t h = fdc->sc_handle; 1059 int j, n = 0; 1060 1061 for (j = 10000; j; j--) { 1062 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1063 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1064 if (v == NE7_RQM) 1065 return (fdc->sc_nstat = n); 1066 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1067 if (n >= sizeof(fdc->sc_status)) { 1068 log(LOG_ERR, "fdcresult: overrun\n"); 1069 return (-1); 1070 } 1071 fdc->sc_status[n++] = 1072 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1073 } else 1074 delay(1); 1075 } 1076 1077 log(LOG_ERR, "fdcresult: timeout\n"); 1078 return (fdc->sc_nstat = -1); 1079 } 1080 1081 /* 1082 * Write a command byte to the FDC. 1083 * Returns 0 on success; -1 on failure (i.e. timeout) 1084 */ 1085 int 1086 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1087 { 1088 bus_space_tag_t t = fdc->sc_bustag; 1089 bus_space_handle_t h = fdc->sc_handle; 1090 int i; 1091 1092 for (i = 100000; i-- > 0;) { 1093 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1094 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1095 /* The chip is ready */ 1096 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1097 return (0); 1098 } 1099 delay(1); 1100 } 1101 return (-1); 1102 } 1103 1104 int 1105 fdc_diskchange(struct fdc_softc *fdc) 1106 { 1107 1108 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1109 bus_space_tag_t t = fdc->sc_bustag; 1110 bus_space_handle_t h = fdc->sc_handle; 1111 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1112 return ((v & FDI_DCHG) != 0); 1113 } else if (CPU_ISSUN4C) { 1114 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1115 } 1116 return (0); 1117 } 1118 1119 int 1120 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1121 { 1122 int unit, pmask; 1123 struct fd_softc *fd; 1124 struct fd_type *type; 1125 1126 unit = FDUNIT(dev); 1127 fd = device_lookup_private(&fd_cd, unit); 1128 if (fd == NULL) 1129 return (ENXIO); 1130 type = fd_dev_to_type(fd, dev); 1131 if (type == NULL) 1132 return (ENXIO); 1133 1134 if ((fd->sc_flags & FD_OPEN) != 0 && 1135 fd->sc_type != type) 1136 return (EBUSY); 1137 1138 fd->sc_type = type; 1139 fd->sc_cylin = -1; 1140 fd->sc_flags |= FD_OPEN; 1141 1142 /* 1143 * Only update the disklabel if we're not open anywhere else. 1144 */ 1145 if (fd->sc_dk.dk_openmask == 0) 1146 fdgetdisklabel(dev); 1147 1148 pmask = (1 << DISKPART(dev)); 1149 1150 switch (fmt) { 1151 case S_IFCHR: 1152 fd->sc_dk.dk_copenmask |= pmask; 1153 break; 1154 1155 case S_IFBLK: 1156 fd->sc_dk.dk_bopenmask |= pmask; 1157 break; 1158 } 1159 fd->sc_dk.dk_openmask = 1160 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1161 1162 return (0); 1163 } 1164 1165 int 1166 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1167 { 1168 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1169 int pmask = (1 << DISKPART(dev)); 1170 1171 fd->sc_flags &= ~FD_OPEN; 1172 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1173 1174 switch (fmt) { 1175 case S_IFCHR: 1176 fd->sc_dk.dk_copenmask &= ~pmask; 1177 break; 1178 1179 case S_IFBLK: 1180 fd->sc_dk.dk_bopenmask &= ~pmask; 1181 break; 1182 } 1183 fd->sc_dk.dk_openmask = 1184 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1185 1186 return (0); 1187 } 1188 1189 int 1190 fdread(dev_t dev, struct uio *uio, int flag) 1191 { 1192 1193 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1194 } 1195 1196 int 1197 fdwrite(dev_t dev, struct uio *uio, int flag) 1198 { 1199 1200 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1201 } 1202 1203 void 1204 fdcstart(struct fdc_softc *fdc) 1205 { 1206 1207 #ifdef DIAGNOSTIC 1208 /* only got here if controller's drive queue was inactive; should 1209 be in idle state */ 1210 if (fdc->sc_state != DEVIDLE) { 1211 printf("fdcstart: not idle\n"); 1212 return; 1213 } 1214 #endif 1215 (void) fdcstate(fdc); 1216 } 1217 1218 static void 1219 fdcpstatus(int n, struct fdc_softc *fdc) 1220 { 1221 char bits[64]; 1222 1223 switch (n) { 1224 case 0: 1225 printf("\n"); 1226 break; 1227 case 2: 1228 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1229 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1230 break; 1231 case 7: 1232 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1233 printf(" (st0 %s", bits); 1234 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1235 printf(" st1 %s", bits); 1236 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1237 printf(" st2 %s", bits); 1238 printf(" cyl %d head %d sec %d)\n", 1239 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1240 break; 1241 #ifdef DIAGNOSTIC 1242 default: 1243 printf("\nfdcstatus: weird size"); 1244 break; 1245 #endif 1246 } 1247 } 1248 1249 void 1250 fdcstatus(struct fdc_softc *fdc, const char *s) 1251 { 1252 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1253 int n; 1254 1255 /* Just print last status */ 1256 n = fdc->sc_nstat; 1257 1258 #if 0 1259 /* 1260 * A 82072 seems to return <invalid command> on 1261 * gratuitous Sense Interrupt commands. 1262 */ 1263 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1264 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1265 (void) fdcresult(fdc); 1266 n = 2; 1267 } 1268 #endif 1269 1270 printf("%s: %s: state %d", 1271 fd ? device_xname(fd->sc_dv) : "fdc", s, fdc->sc_state); 1272 1273 fdcpstatus(n, fdc); 1274 } 1275 1276 void 1277 fdctimeout(void *arg) 1278 { 1279 struct fdc_softc *fdc = arg; 1280 struct fd_softc *fd; 1281 int s; 1282 1283 s = splbio(); 1284 fd = fdc->sc_drives.tqh_first; 1285 if (fd == NULL) { 1286 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1287 device_xname(fdc->sc_dev), 1288 fdc->sc_state, fdc->sc_istatus); 1289 fdc->sc_state = DEVIDLE; 1290 goto out; 1291 } 1292 1293 if (bufq_peek(fd->sc_q) != NULL) 1294 fdc->sc_state++; 1295 else 1296 fdc->sc_state = DEVIDLE; 1297 1298 (void) fdcstate(fdc); 1299 out: 1300 splx(s); 1301 1302 } 1303 1304 void 1305 fdcpseudointr(void *arg) 1306 { 1307 struct fdc_softc *fdc = arg; 1308 int s; 1309 1310 /* Just ensure it has the right spl. */ 1311 s = splbio(); 1312 (void) fdcstate(fdc); 1313 splx(s); 1314 } 1315 1316 1317 /* 1318 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1319 * handler is available. Unfortunately, we have no reliable way to 1320 * determine that the interrupt really came from the floppy controller; 1321 * just hope that the other devices that share this interrupt level 1322 * can do better.. 1323 */ 1324 int 1325 fdc_c_hwintr(void *arg) 1326 { 1327 struct fdc_softc *fdc = arg; 1328 bus_space_tag_t t = fdc->sc_bustag; 1329 bus_space_handle_t h = fdc->sc_handle; 1330 1331 switch (fdc->sc_itask) { 1332 case FDC_ITASK_NONE: 1333 return (0); 1334 case FDC_ITASK_SENSEI: 1335 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1336 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1337 else 1338 fdc->sc_istatus = FDC_ISTATUS_DONE; 1339 softint_schedule(fdc->sc_sicookie); 1340 return (1); 1341 case FDC_ITASK_RESULT: 1342 if (fdcresult(fdc) == -1) 1343 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1344 else 1345 fdc->sc_istatus = FDC_ISTATUS_DONE; 1346 softint_schedule(fdc->sc_sicookie); 1347 return (1); 1348 case FDC_ITASK_DMA: 1349 /* Proceed with pseudo-DMA below */ 1350 break; 1351 default: 1352 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1353 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1354 softint_schedule(fdc->sc_sicookie); 1355 return (1); 1356 } 1357 1358 /* 1359 * Pseudo DMA in progress 1360 */ 1361 for (;;) { 1362 uint8_t msr; 1363 1364 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1365 1366 if ((msr & NE7_RQM) == 0) 1367 /* That's all this round */ 1368 break; 1369 1370 if ((msr & NE7_NDM) == 0) { 1371 /* Execution phase finished, get result. */ 1372 fdcresult(fdc); 1373 fdc->sc_istatus = FDC_ISTATUS_DONE; 1374 softint_schedule(fdc->sc_sicookie); 1375 break; 1376 } 1377 1378 if (fdc->sc_tc == 0) 1379 /* For some reason the controller wants to transfer 1380 more data then what we want to transfer. */ 1381 panic("fdc: overrun"); 1382 1383 /* Another byte can be transferred */ 1384 if ((msr & NE7_DIO) != 0) 1385 *fdc->sc_data = 1386 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1387 else 1388 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1389 *fdc->sc_data); 1390 1391 fdc->sc_data++; 1392 if (--fdc->sc_tc == 0) { 1393 FTC_FLIP; 1394 break; 1395 } 1396 } 1397 return (1); 1398 } 1399 1400 void 1401 fdcswintr(void *arg) 1402 { 1403 struct fdc_softc *fdc = arg; 1404 1405 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1406 /* This (software) interrupt is not for us */ 1407 return; 1408 1409 switch (fdc->sc_istatus) { 1410 case FDC_ISTATUS_ERROR: 1411 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1412 break; 1413 case FDC_ISTATUS_SPURIOUS: 1414 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1415 break; 1416 } 1417 1418 fdcstate(fdc); 1419 return; 1420 } 1421 1422 int 1423 fdcstate(struct fdc_softc *fdc) 1424 { 1425 1426 #define st0 fdc->sc_status[0] 1427 #define st1 fdc->sc_status[1] 1428 #define cyl fdc->sc_status[1] 1429 #define FDC_WRFIFO(fdc, c) do { \ 1430 if (fdc_wrfifo(fdc, (c))) { \ 1431 goto xxx; \ 1432 } \ 1433 } while(0) 1434 1435 struct fd_softc *fd; 1436 struct buf *bp; 1437 int read, head, sec, nblks; 1438 struct fd_type *type; 1439 struct ne7_fd_formb *finfo = NULL; 1440 1441 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1442 /* Prevent loop if the reset sequence produces errors */ 1443 if (fdc->sc_state != RESETCOMPLETE && 1444 fdc->sc_state != RECALWAIT && 1445 fdc->sc_state != RECALCOMPLETE) 1446 fdc->sc_state = DORESET; 1447 } 1448 1449 /* Clear I task/status field */ 1450 fdc->sc_istatus = FDC_ISTATUS_NONE; 1451 fdc->sc_itask = FDC_ITASK_NONE; 1452 1453 loop: 1454 /* Is there a drive for the controller to do a transfer with? */ 1455 fd = fdc->sc_drives.tqh_first; 1456 if (fd == NULL) { 1457 fdc->sc_state = DEVIDLE; 1458 return (0); 1459 } 1460 1461 /* Is there a transfer to this drive? If not, deactivate drive. */ 1462 bp = bufq_peek(fd->sc_q); 1463 if (bp == NULL) { 1464 fd->sc_ops = 0; 1465 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1466 fd->sc_active = 0; 1467 goto loop; 1468 } 1469 1470 if (bp->b_flags & B_FORMAT) 1471 finfo = (struct ne7_fd_formb *)bp->b_data; 1472 1473 switch (fdc->sc_state) { 1474 case DEVIDLE: 1475 fdc->sc_errors = 0; 1476 fd->sc_skip = 0; 1477 fd->sc_bcount = bp->b_bcount; 1478 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1479 callout_stop(&fd->sc_motoroff_ch); 1480 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1481 fdc->sc_state = MOTORWAIT; 1482 return (1); 1483 } 1484 if ((fd->sc_flags & FD_MOTOR) == 0) { 1485 /* Turn on the motor, being careful about pairing. */ 1486 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1487 if (ofd && ofd->sc_flags & FD_MOTOR) { 1488 callout_stop(&ofd->sc_motoroff_ch); 1489 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1490 } 1491 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1492 fd_set_motor(fdc); 1493 fdc->sc_state = MOTORWAIT; 1494 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1495 /* Allow .25s for motor to stabilize. */ 1496 callout_reset(&fd->sc_motoron_ch, hz / 4, 1497 fd_motor_on, fd); 1498 } else { 1499 fd->sc_flags &= ~FD_MOTOR_WAIT; 1500 goto loop; 1501 } 1502 return (1); 1503 } 1504 /* Make sure the right drive is selected. */ 1505 fd_set_motor(fdc); 1506 1507 if (fdc_diskchange(fdc)) 1508 goto dodskchg; 1509 1510 /*FALLTHROUGH*/ 1511 case DOSEEK: 1512 doseek: 1513 if ((fdc->sc_flags & FDC_EIS) && 1514 (bp->b_flags & B_FORMAT) == 0) { 1515 fd->sc_cylin = bp->b_cylinder; 1516 /* We use implied seek */ 1517 goto doio; 1518 } 1519 1520 if (fd->sc_cylin == bp->b_cylinder) 1521 goto doio; 1522 1523 fd->sc_cylin = -1; 1524 fdc->sc_state = SEEKWAIT; 1525 fdc->sc_nstat = 0; 1526 1527 iostat_seek(fd->sc_dk.dk_stats); 1528 1529 disk_busy(&fd->sc_dk); 1530 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1531 1532 /* specify command */ 1533 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1534 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1535 /* XXX head load time == 6ms */ 1536 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1537 1538 fdc->sc_itask = FDC_ITASK_SENSEI; 1539 /* seek function */ 1540 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1541 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1542 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1543 return (1); 1544 1545 case DODSKCHG: 1546 dodskchg: 1547 /* 1548 * Disk change: force a seek operation by going to cyl 1 1549 * followed by a recalibrate. 1550 */ 1551 disk_busy(&fd->sc_dk); 1552 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1553 fd->sc_cylin = -1; 1554 fdc->sc_nstat = 0; 1555 fdc->sc_state = DSKCHGWAIT; 1556 1557 fdc->sc_itask = FDC_ITASK_SENSEI; 1558 /* seek function */ 1559 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1560 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1561 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1562 return (1); 1563 1564 case DSKCHGWAIT: 1565 callout_stop(&fdc->sc_timo_ch); 1566 disk_unbusy(&fd->sc_dk, 0, 0); 1567 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1568 cyl != 1 * fd->sc_type->step) { 1569 fdcstatus(fdc, "dskchg seek failed"); 1570 fdc->sc_state = DORESET; 1571 } else 1572 fdc->sc_state = DORECAL; 1573 1574 if (fdc_diskchange(fdc)) { 1575 printf("%s: cannot clear disk change status\n", 1576 device_xname(fdc->sc_dev)); 1577 fdc->sc_state = DORESET; 1578 } 1579 goto loop; 1580 1581 case DOIO: 1582 doio: 1583 if (finfo != NULL) 1584 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1585 (char *)finfo; 1586 type = fd->sc_type; 1587 sec = fd->sc_blkno % type->seccyl; 1588 nblks = type->seccyl - sec; 1589 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1590 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1591 fd->sc_nblks = nblks; 1592 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1593 head = sec / type->sectrac; 1594 sec -= head * type->sectrac; 1595 #ifdef DIAGNOSTIC 1596 {int block; 1597 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1598 if (block != fd->sc_blkno) { 1599 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1600 #ifdef DDB 1601 Debugger(); 1602 #endif 1603 }} 1604 #endif 1605 read = bp->b_flags & B_READ; 1606 1607 /* Setup for pseudo DMA */ 1608 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1609 fdc->sc_tc = fd->sc_nbytes; 1610 1611 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1612 fdc->sc_reg_drs, type->rate); 1613 #ifdef FD_DEBUG 1614 if (fdc_debug > 1) 1615 printf("fdcstate: doio: %s drive %d " 1616 "track %d head %d sec %d nblks %d\n", 1617 finfo ? "format" : 1618 (read ? "read" : "write"), 1619 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1620 #endif 1621 fdc->sc_state = IOCOMPLETE; 1622 fdc->sc_itask = FDC_ITASK_DMA; 1623 fdc->sc_nstat = 0; 1624 1625 disk_busy(&fd->sc_dk); 1626 1627 /* allow 3 seconds for operation */ 1628 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1629 1630 if (finfo != NULL) { 1631 /* formatting */ 1632 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1633 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1634 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1635 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1636 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1637 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1638 } else { 1639 if (read) 1640 FDC_WRFIFO(fdc, NE7CMD_READ); 1641 else 1642 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1643 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1644 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1645 FDC_WRFIFO(fdc, head); 1646 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1647 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1648 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1649 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1650 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1651 } 1652 1653 return (1); /* will return later */ 1654 1655 case SEEKWAIT: 1656 callout_stop(&fdc->sc_timo_ch); 1657 fdc->sc_state = SEEKCOMPLETE; 1658 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1659 /* allow 1/50 second for heads to settle */ 1660 callout_reset(&fdc->sc_intr_ch, hz / 50, 1661 fdcpseudointr, fdc); 1662 return (1); /* will return later */ 1663 } 1664 /*FALLTHROUGH*/ 1665 case SEEKCOMPLETE: 1666 /* no data on seek */ 1667 disk_unbusy(&fd->sc_dk, 0, 0); 1668 1669 /* Make sure seek really happened. */ 1670 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1671 cyl != bp->b_cylinder * fd->sc_type->step) { 1672 #ifdef FD_DEBUG 1673 if (fdc_debug) 1674 fdcstatus(fdc, "seek failed"); 1675 #endif 1676 fdcretry(fdc); 1677 goto loop; 1678 } 1679 fd->sc_cylin = bp->b_cylinder; 1680 goto doio; 1681 1682 case IOTIMEDOUT: 1683 /* 1684 * Try to abort the I/O operation without resetting 1685 * the chip first. Poke TC and arrange to pick up 1686 * the timed out I/O command's status. 1687 */ 1688 fdc->sc_itask = FDC_ITASK_RESULT; 1689 fdc->sc_state = IOCLEANUPWAIT; 1690 fdc->sc_nstat = 0; 1691 /* 1/10 second should be enough */ 1692 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1693 FTC_FLIP; 1694 return (1); 1695 1696 case IOCLEANUPTIMEDOUT: 1697 case SEEKTIMEDOUT: 1698 case RECALTIMEDOUT: 1699 case RESETTIMEDOUT: 1700 case DSKCHGTIMEDOUT: 1701 fdcstatus(fdc, "timeout"); 1702 1703 /* All other timeouts always roll through to a chip reset */ 1704 fdcretry(fdc); 1705 1706 /* Force reset, no matter what fdcretry() says */ 1707 fdc->sc_state = DORESET; 1708 goto loop; 1709 1710 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1711 callout_stop(&fdc->sc_timo_ch); 1712 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1713 (bp->b_flags & B_READ)); 1714 fdcretry(fdc); 1715 goto loop; 1716 1717 case IOCOMPLETE: /* IO DONE, post-analyze */ 1718 callout_stop(&fdc->sc_timo_ch); 1719 1720 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1721 (bp->b_flags & B_READ)); 1722 1723 if (fdc->sc_nstat != 7 || st1 != 0 || 1724 ((st0 & 0xf8) != 0 && 1725 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1726 #ifdef FD_DEBUG 1727 if (fdc_debug) { 1728 fdcstatus(fdc, 1729 bp->b_flags & B_READ 1730 ? "read failed" : "write failed"); 1731 printf("blkno %lld nblks %d nstat %d tc %d\n", 1732 (long long)fd->sc_blkno, fd->sc_nblks, 1733 fdc->sc_nstat, fdc->sc_tc); 1734 } 1735 #endif 1736 if (fdc->sc_nstat == 7 && 1737 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1738 1739 /* 1740 * Silently retry overruns if no other 1741 * error bit is set. Adjust threshold. 1742 */ 1743 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1744 if (thr < 15) { 1745 thr++; 1746 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1747 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1748 #ifdef FD_DEBUG 1749 if (fdc_debug) 1750 printf("fdc: %d -> threshold\n", thr); 1751 #endif 1752 fdconf(fdc); 1753 fdc->sc_overruns = 0; 1754 } 1755 if (++fdc->sc_overruns < 3) { 1756 fdc->sc_state = DOIO; 1757 goto loop; 1758 } 1759 } 1760 fdcretry(fdc); 1761 goto loop; 1762 } 1763 if (fdc->sc_errors) { 1764 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1765 fd->sc_skip / FD_BSIZE(fd), 1766 (struct disklabel *)NULL); 1767 printf("\n"); 1768 fdc->sc_errors = 0; 1769 } else { 1770 if (--fdc->sc_overruns < -20) { 1771 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1772 if (thr > 0) { 1773 thr--; 1774 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1775 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1776 #ifdef FD_DEBUG 1777 if (fdc_debug) 1778 printf("fdc: %d -> threshold\n", thr); 1779 #endif 1780 fdconf(fdc); 1781 } 1782 fdc->sc_overruns = 0; 1783 } 1784 } 1785 fd->sc_blkno += fd->sc_nblks; 1786 fd->sc_skip += fd->sc_nbytes; 1787 fd->sc_bcount -= fd->sc_nbytes; 1788 if (finfo == NULL && fd->sc_bcount > 0) { 1789 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1790 goto doseek; 1791 } 1792 fdfinish(fd, bp); 1793 goto loop; 1794 1795 case DORESET: 1796 /* try a reset, keep motor on */ 1797 fd_set_motor(fdc); 1798 delay(100); 1799 fdc->sc_nstat = 0; 1800 fdc->sc_itask = FDC_ITASK_SENSEI; 1801 fdc->sc_state = RESETCOMPLETE; 1802 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1803 fdc_reset(fdc); 1804 return (1); /* will return later */ 1805 1806 case RESETCOMPLETE: 1807 callout_stop(&fdc->sc_timo_ch); 1808 fdconf(fdc); 1809 1810 /* FALLTHROUGH */ 1811 case DORECAL: 1812 fdc->sc_state = RECALWAIT; 1813 fdc->sc_itask = FDC_ITASK_SENSEI; 1814 fdc->sc_nstat = 0; 1815 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1816 /* recalibrate function */ 1817 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1818 FDC_WRFIFO(fdc, fd->sc_drive); 1819 return (1); /* will return later */ 1820 1821 case RECALWAIT: 1822 callout_stop(&fdc->sc_timo_ch); 1823 fdc->sc_state = RECALCOMPLETE; 1824 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1825 /* allow 1/30 second for heads to settle */ 1826 callout_reset(&fdc->sc_intr_ch, hz / 30, 1827 fdcpseudointr, fdc); 1828 return (1); /* will return later */ 1829 } 1830 1831 case RECALCOMPLETE: 1832 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1833 #ifdef FD_DEBUG 1834 if (fdc_debug) 1835 fdcstatus(fdc, "recalibrate failed"); 1836 #endif 1837 fdcretry(fdc); 1838 goto loop; 1839 } 1840 fd->sc_cylin = 0; 1841 goto doseek; 1842 1843 case MOTORWAIT: 1844 if (fd->sc_flags & FD_MOTOR_WAIT) 1845 return (1); /* time's not up yet */ 1846 goto doseek; 1847 1848 default: 1849 fdcstatus(fdc, "stray interrupt"); 1850 return (1); 1851 } 1852 #ifdef DIAGNOSTIC 1853 panic("fdcintr: impossible"); 1854 #endif 1855 1856 xxx: 1857 /* 1858 * We get here if the chip locks up in FDC_WRFIFO() 1859 * Cancel any operation and schedule a reset 1860 */ 1861 callout_stop(&fdc->sc_timo_ch); 1862 fdcretry(fdc); 1863 (fdc)->sc_state = DORESET; 1864 goto loop; 1865 1866 #undef st0 1867 #undef st1 1868 #undef cyl 1869 } 1870 1871 void 1872 fdcretry(struct fdc_softc *fdc) 1873 { 1874 struct fd_softc *fd; 1875 struct buf *bp; 1876 int error = EIO; 1877 1878 fd = fdc->sc_drives.tqh_first; 1879 bp = bufq_peek(fd->sc_q); 1880 1881 fdc->sc_overruns = 0; 1882 if (fd->sc_opts & FDOPT_NORETRY) 1883 goto fail; 1884 1885 switch (fdc->sc_errors) { 1886 case 0: 1887 if (fdc->sc_nstat == 7 && 1888 (fdc->sc_status[0] & 0xd8) == 0x40 && 1889 (fdc->sc_status[1] & 0x2) == 0x2) { 1890 printf("%s: read-only medium\n", 1891 device_xname(fd->sc_dv)); 1892 error = EROFS; 1893 goto failsilent; 1894 } 1895 /* try again */ 1896 fdc->sc_state = 1897 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1898 break; 1899 1900 case 1: case 2: case 3: 1901 /* didn't work; try recalibrating */ 1902 fdc->sc_state = DORECAL; 1903 break; 1904 1905 case 4: 1906 if (fdc->sc_nstat == 7 && 1907 fdc->sc_status[0] == 0 && 1908 fdc->sc_status[1] == 0 && 1909 fdc->sc_status[2] == 0) { 1910 /* 1911 * We've retried a few times and we've got 1912 * valid status and all three status bytes 1913 * are zero. Assume this condition is the 1914 * result of no disk loaded into the drive. 1915 */ 1916 printf("%s: no medium?\n", 1917 device_xname(fd->sc_dv)); 1918 error = ENODEV; 1919 goto failsilent; 1920 } 1921 1922 /* still no go; reset the bastard */ 1923 fdc->sc_state = DORESET; 1924 break; 1925 1926 default: 1927 fail: 1928 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1929 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1930 fd->sc_skip / FD_BSIZE(fd), 1931 (struct disklabel *)NULL); 1932 printf("\n"); 1933 fdcstatus(fdc, "controller status"); 1934 } 1935 1936 failsilent: 1937 bp->b_error = error; 1938 fdfinish(fd, bp); 1939 } 1940 fdc->sc_errors++; 1941 } 1942 1943 int 1944 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1945 { 1946 struct fd_softc *fd; 1947 struct fdc_softc *fdc; 1948 struct fdformat_parms *form_parms; 1949 struct fdformat_cmd *form_cmd; 1950 struct ne7_fd_formb *fd_formb; 1951 int il[FD_MAX_NSEC + 1]; 1952 int unit; 1953 int i, j; 1954 int error; 1955 1956 unit = FDUNIT(dev); 1957 if (unit >= fd_cd.cd_ndevs) 1958 return (ENXIO); 1959 1960 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1961 fdc = device_private(device_parent(fd->sc_dv)); 1962 1963 switch (cmd) { 1964 case DIOCGDINFO: 1965 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1966 return 0; 1967 1968 case DIOCWLABEL: 1969 if ((flag & FWRITE) == 0) 1970 return EBADF; 1971 /* XXX do something */ 1972 return (0); 1973 1974 case DIOCWDINFO: 1975 if ((flag & FWRITE) == 0) 1976 return (EBADF); 1977 1978 error = setdisklabel(fd->sc_dk.dk_label, 1979 (struct disklabel *)addr, 0, 1980 fd->sc_dk.dk_cpulabel); 1981 if (error) 1982 return (error); 1983 1984 error = writedisklabel(dev, fdstrategy, 1985 fd->sc_dk.dk_label, 1986 fd->sc_dk.dk_cpulabel); 1987 return (error); 1988 1989 case DIOCLOCK: 1990 /* 1991 * Nothing to do here, really. 1992 */ 1993 return (0); 1994 1995 case DIOCEJECT: 1996 if (*(int *)addr == 0) { 1997 int part = DISKPART(dev); 1998 /* 1999 * Don't force eject: check that we are the only 2000 * partition open. If so, unlock it. 2001 */ 2002 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 2003 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2004 fd->sc_dk.dk_openmask) { 2005 return (EBUSY); 2006 } 2007 } 2008 /* FALLTHROUGH */ 2009 case ODIOCEJECT: 2010 fd_do_eject(fd); 2011 return (0); 2012 2013 case FDIOCGETFORMAT: 2014 form_parms = (struct fdformat_parms *)addr; 2015 form_parms->fdformat_version = FDFORMAT_VERSION; 2016 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2017 form_parms->ncyl = fd->sc_type->cylinders; 2018 form_parms->nspt = fd->sc_type->sectrac; 2019 form_parms->ntrk = fd->sc_type->heads; 2020 form_parms->stepspercyl = fd->sc_type->step; 2021 form_parms->gaplen = fd->sc_type->gap2; 2022 form_parms->fillbyte = fd->sc_type->fillbyte; 2023 form_parms->interleave = fd->sc_type->interleave; 2024 switch (fd->sc_type->rate) { 2025 case FDC_500KBPS: 2026 form_parms->xfer_rate = 500 * 1024; 2027 break; 2028 case FDC_300KBPS: 2029 form_parms->xfer_rate = 300 * 1024; 2030 break; 2031 case FDC_250KBPS: 2032 form_parms->xfer_rate = 250 * 1024; 2033 break; 2034 default: 2035 return (EINVAL); 2036 } 2037 return (0); 2038 2039 case FDIOCSETFORMAT: 2040 if ((flag & FWRITE) == 0) 2041 return (EBADF); /* must be opened for writing */ 2042 2043 form_parms = (struct fdformat_parms *)addr; 2044 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2045 return (EINVAL);/* wrong version of formatting prog */ 2046 2047 i = form_parms->nbps >> 7; 2048 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2049 i & ~(1 << (ffs(i)-1))) 2050 /* not a power-of-two multiple of 128 */ 2051 return (EINVAL); 2052 2053 switch (form_parms->xfer_rate) { 2054 case 500 * 1024: 2055 fd->sc_type->rate = FDC_500KBPS; 2056 break; 2057 case 300 * 1024: 2058 fd->sc_type->rate = FDC_300KBPS; 2059 break; 2060 case 250 * 1024: 2061 fd->sc_type->rate = FDC_250KBPS; 2062 break; 2063 default: 2064 return (EINVAL); 2065 } 2066 2067 if (form_parms->nspt > FD_MAX_NSEC || 2068 form_parms->fillbyte > 0xff || 2069 form_parms->interleave > 0xff) 2070 return EINVAL; 2071 fd->sc_type->sectrac = form_parms->nspt; 2072 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2073 return EINVAL; 2074 fd->sc_type->heads = form_parms->ntrk; 2075 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2076 fd->sc_type->secsize = ffs(i)-1; 2077 fd->sc_type->gap2 = form_parms->gaplen; 2078 fd->sc_type->cylinders = form_parms->ncyl; 2079 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2080 form_parms->nbps / DEV_BSIZE; 2081 fd->sc_type->step = form_parms->stepspercyl; 2082 fd->sc_type->fillbyte = form_parms->fillbyte; 2083 fd->sc_type->interleave = form_parms->interleave; 2084 return (0); 2085 2086 case FDIOCFORMAT_TRACK: 2087 if((flag & FWRITE) == 0) 2088 /* must be opened for writing */ 2089 return (EBADF); 2090 form_cmd = (struct fdformat_cmd *)addr; 2091 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2092 /* wrong version of formatting prog */ 2093 return (EINVAL); 2094 2095 if (form_cmd->head >= fd->sc_type->heads || 2096 form_cmd->cylinder >= fd->sc_type->cylinders) { 2097 return (EINVAL); 2098 } 2099 2100 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2101 M_TEMP, M_NOWAIT); 2102 if (fd_formb == 0) 2103 return (ENOMEM); 2104 2105 fd_formb->head = form_cmd->head; 2106 fd_formb->cyl = form_cmd->cylinder; 2107 fd_formb->transfer_rate = fd->sc_type->rate; 2108 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2109 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2110 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2111 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2112 2113 memset(il, 0, sizeof il); 2114 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2115 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2116 j++; 2117 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2118 j += fd->sc_type->interleave; 2119 } 2120 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2121 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2122 fd_formb->fd_formb_headno(i) = form_cmd->head; 2123 fd_formb->fd_formb_secno(i) = il[i+1]; 2124 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2125 } 2126 2127 error = fdformat(dev, fd_formb, l->l_proc); 2128 free(fd_formb, M_TEMP); 2129 return error; 2130 2131 case FDIOCGETOPTS: /* get drive options */ 2132 *(int *)addr = fd->sc_opts; 2133 return (0); 2134 2135 case FDIOCSETOPTS: /* set drive options */ 2136 fd->sc_opts = *(int *)addr; 2137 return (0); 2138 2139 #ifdef FD_DEBUG 2140 case _IO('f', 100): 2141 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2142 fdcresult(fdc); 2143 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2144 for (i = 0; i < fdc->sc_nstat; i++) 2145 printf(" 0x%x", fdc->sc_status[i]); 2146 printf(">\n"); 2147 return (0); 2148 2149 case _IOW('f', 101, int): 2150 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2151 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2152 fdconf(fdc); 2153 return (0); 2154 2155 case _IO('f', 102): 2156 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2157 fdcresult(fdc); 2158 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2159 for (i=0; i< fdc->sc_nstat; i++) 2160 printf(" 0x%x", fdc->sc_status[i]); 2161 printf(">\n"); 2162 return (0); 2163 #endif 2164 default: 2165 return (ENOTTY); 2166 } 2167 2168 #ifdef DIAGNOSTIC 2169 panic("fdioctl: impossible"); 2170 #endif 2171 } 2172 2173 int 2174 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2175 { 2176 int rv = 0; 2177 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2178 struct fd_type *type = fd->sc_type; 2179 struct buf *bp; 2180 2181 /* set up a buffer header for fdstrategy() */ 2182 bp = getiobuf(NULL, false); 2183 if (bp == NULL) 2184 return (ENOBUFS); 2185 2186 bp->b_vp = NULL; 2187 bp->b_cflags = BC_BUSY; 2188 bp->b_flags = B_PHYS | B_FORMAT; 2189 bp->b_proc = p; 2190 bp->b_dev = dev; 2191 2192 /* 2193 * Calculate a fake blkno, so fdstrategy() would initiate a 2194 * seek to the requested cylinder. 2195 */ 2196 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2197 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2198 / DEV_BSIZE; 2199 2200 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2201 bp->b_data = (void *)finfo; 2202 2203 #ifdef FD_DEBUG 2204 if (fdc_debug) { 2205 int i; 2206 2207 printf("fdformat: blkno 0x%llx count %d\n", 2208 (unsigned long long)bp->b_blkno, bp->b_bcount); 2209 2210 printf("\tcyl:\t%d\n", finfo->cyl); 2211 printf("\thead:\t%d\n", finfo->head); 2212 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2213 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2214 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2215 printf("\ttrack data:"); 2216 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2217 printf(" [c%d h%d s%d]", 2218 finfo->fd_formb_cylno(i), 2219 finfo->fd_formb_headno(i), 2220 finfo->fd_formb_secno(i) ); 2221 if (finfo->fd_formb_secsize(i) != 2) 2222 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2223 } 2224 printf("\n"); 2225 } 2226 #endif 2227 2228 /* now do the format */ 2229 fdstrategy(bp); 2230 2231 /* ...and wait for it to complete */ 2232 rv = biowait(bp); 2233 putiobuf(bp); 2234 return (rv); 2235 } 2236 2237 void 2238 fdgetdisklabel(dev_t dev) 2239 { 2240 int unit = FDUNIT(dev), i; 2241 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2242 struct disklabel *lp = fd->sc_dk.dk_label; 2243 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2244 2245 memset(lp, 0, sizeof(struct disklabel)); 2246 memset(lp, 0, sizeof(struct cpu_disklabel)); 2247 2248 lp->d_type = DTYPE_FLOPPY; 2249 lp->d_secsize = FD_BSIZE(fd); 2250 lp->d_secpercyl = fd->sc_type->seccyl; 2251 lp->d_nsectors = fd->sc_type->sectrac; 2252 lp->d_ncylinders = fd->sc_type->cylinders; 2253 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2254 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2255 lp->d_rpm = 3600; /* XXX like it matters... */ 2256 2257 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2258 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2259 lp->d_interleave = 1; 2260 2261 lp->d_partitions[RAW_PART].p_offset = 0; 2262 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2263 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2264 lp->d_npartitions = RAW_PART + 1; 2265 2266 lp->d_magic = DISKMAGIC; 2267 lp->d_magic2 = DISKMAGIC; 2268 lp->d_checksum = dkcksum(lp); 2269 2270 /* 2271 * Call the generic disklabel extraction routine. If there's 2272 * not a label there, fake it. 2273 */ 2274 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2275 strncpy(lp->d_packname, "default label", 2276 sizeof(lp->d_packname)); 2277 /* 2278 * Reset the partition info; it might have gotten 2279 * trashed in readdisklabel(). 2280 * 2281 * XXX Why do we have to do this? readdisklabel() 2282 * should be safe... 2283 */ 2284 for (i = 0; i < MAXPARTITIONS; ++i) { 2285 lp->d_partitions[i].p_offset = 0; 2286 if (i == RAW_PART) { 2287 lp->d_partitions[i].p_size = 2288 lp->d_secpercyl * lp->d_ncylinders; 2289 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2290 } else { 2291 lp->d_partitions[i].p_size = 0; 2292 lp->d_partitions[i].p_fstype = FS_UNUSED; 2293 } 2294 } 2295 lp->d_npartitions = RAW_PART + 1; 2296 } 2297 } 2298 2299 void 2300 fd_do_eject(struct fd_softc *fd) 2301 { 2302 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 2303 2304 if (CPU_ISSUN4C) { 2305 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2306 delay(10); 2307 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2308 return; 2309 } 2310 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2311 bus_space_tag_t t = fdc->sc_bustag; 2312 bus_space_handle_t h = fdc->sc_handle; 2313 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2314 2315 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2316 delay(10); 2317 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2318 return; 2319 } 2320 } 2321 2322 /* ARGSUSED */ 2323 void 2324 fd_mountroot_hook(device_t dev) 2325 { 2326 int c; 2327 2328 fd_do_eject(device_private(dev)); 2329 printf("Insert filesystem floppy and press return."); 2330 for (;;) { 2331 c = cngetc(); 2332 if ((c == '\r') || (c == '\n')) { 2333 printf("\n"); 2334 break; 2335 } 2336 } 2337 } 2338 2339 #ifdef MEMORY_DISK_HOOKS 2340 2341 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2342 2343 int 2344 fd_read_md_image(size_t *sizep, void * *addrp) 2345 { 2346 struct buf buf, *bp = &buf; 2347 dev_t dev; 2348 off_t offset; 2349 void *addr; 2350 2351 dev = makedev(54,0); /* XXX */ 2352 2353 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2354 *addrp = addr; 2355 2356 if (fdopen(dev, 0, S_IFCHR, NULL)) 2357 panic("fd: mountroot: fdopen"); 2358 2359 offset = 0; 2360 2361 for (;;) { 2362 bp->b_dev = dev; 2363 bp->b_error = 0; 2364 bp->b_resid = 0; 2365 bp->b_proc = NULL; 2366 bp->b_cflags |= BC_BUSY; 2367 bp->b_flags = B_PHYS | B_RAW | B_READ; 2368 bp->b_blkno = btodb(offset); 2369 bp->b_bcount = DEV_BSIZE; 2370 bp->b_data = addr; 2371 fdstrategy(bp); 2372 biowait(bp); 2373 if (bp->b_error) 2374 panic("fd: mountroot: fdread error %d", bp->b_error); 2375 2376 if (bp->b_resid != 0) 2377 break; 2378 2379 addr = (char *)addr + DEV_BSIZE; 2380 offset += DEV_BSIZE; 2381 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2382 break; 2383 } 2384 (void)fdclose(dev, 0, S_IFCHR, NULL); 2385 *sizep = offset; 2386 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2387 return (0); 2388 } 2389 #endif /* MEMORY_DISK_HOOKS */ 2390
Indexes created Fri Oct 03 02:09:57 GMT 2025