fd.c revision 1.150.12.1
1 /* $NetBSD: fd.c,v 1.150.12.1 2012/11/20 03:01:43 tls Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Don Ahn. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)fd.c 7.4 (Berkeley) 5/25/91 64 */ 65 66 /*- 67 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 68 * 69 * This code is derived from software contributed to Berkeley by 70 * Don Ahn. 71 * 72 * Redistribution and use in source and binary forms, with or without 73 * modification, are permitted provided that the following conditions 74 * are met: 75 * 1. Redistributions of source code must retain the above copyright 76 * notice, this list of conditions and the following disclaimer. 77 * 2. Redistributions in binary form must reproduce the above copyright 78 * notice, this list of conditions and the following disclaimer in the 79 * documentation and/or other materials provided with the distribution. 80 * 3. All advertising materials mentioning features or use of this software 81 * must display the following acknowledgement: 82 * This product includes software developed by the University of 83 * California, Berkeley and its contributors. 84 * 4. Neither the name of the University nor the names of its contributors 85 * may be used to endorse or promote products derived from this software 86 * without specific prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 89 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 90 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 91 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 92 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 93 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 94 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 95 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 96 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 97 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 98 * SUCH DAMAGE. 99 * 100 * @(#)fd.c 7.4 (Berkeley) 5/25/91 101 */ 102 103 #include <sys/cdefs.h> 104 __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.150.12.1 2012/11/20 03:01:43 tls 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 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 311 }; 312 313 const struct cdevsw fd_cdevsw = { 314 fdopen, fdclose, fdread, fdwrite, fdioctl, 315 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 316 }; 317 318 void fdgetdisklabel(dev_t); 319 int fd_get_parms(struct fd_softc *); 320 void fdstart(struct fd_softc *); 321 int fdprint(void *, const char *); 322 323 struct dkdriver fddkdriver = { fdstrategy }; 324 325 struct fd_type *fd_nvtotype(char *, int, int); 326 void fd_set_motor(struct fdc_softc *); 327 void fd_motor_off(void *); 328 void fd_motor_on(void *); 329 int fdcresult(struct fdc_softc *); 330 int fdc_wrfifo(struct fdc_softc *, uint8_t); 331 void fdcstart(struct fdc_softc *); 332 void fdcstatus(struct fdc_softc *, const char *); 333 void fdc_reset(struct fdc_softc *); 334 int fdc_diskchange(struct fdc_softc *); 335 void fdctimeout(void *); 336 void fdcpseudointr(void *); 337 int fdc_c_hwintr(void *); 338 void fdchwintr(void); 339 void fdcswintr(void *); 340 int fdcstate(struct fdc_softc *); 341 void fdcretry(struct fdc_softc *); 342 void fdfinish(struct fd_softc *, struct buf *); 343 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 344 void fd_do_eject(struct fd_softc *); 345 void fd_mountroot_hook(device_t); 346 static int fdconf(struct fdc_softc *); 347 static void establish_chip_type( 348 struct fdc_softc *, 349 bus_space_tag_t, 350 bus_addr_t, 351 bus_size_t, 352 bus_space_handle_t); 353 354 #ifdef MEMORY_DISK_HOOKS 355 int fd_read_md_image(size_t *, void **); 356 #endif 357 358 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 359 360 int 361 fdcmatch_mainbus(device_t parent, cfdata_t match, void *aux) 362 { 363 struct mainbus_attach_args *ma = aux; 364 365 /* 366 * Floppy controller is on mainbus on sun4c. 367 */ 368 if (!CPU_ISSUN4C) 369 return (0); 370 371 /* sun4c PROMs call the controller "fd" */ 372 if (strcmp("fd", ma->ma_name) != 0) 373 return (0); 374 375 return (bus_space_probe(ma->ma_bustag, 376 ma->ma_paddr, 377 1, /* probe size */ 378 0, /* offset */ 379 0, /* flags */ 380 NULL, NULL)); 381 } 382 383 int 384 fdcmatch_obio(device_t parent, cfdata_t match, void *aux) 385 { 386 union obio_attach_args *uoba = aux; 387 struct sbus_attach_args *sa; 388 389 /* 390 * Floppy controller is on obio on sun4m. 391 */ 392 if (uoba->uoba_isobio4 != 0) 393 return (0); 394 395 sa = &uoba->uoba_sbus; 396 397 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 398 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 399 return (0); 400 401 return (bus_space_probe(sa->sa_bustag, 402 sbus_bus_addr(sa->sa_bustag, 403 sa->sa_slot, sa->sa_offset), 404 1, /* probe size */ 405 0, /* offset */ 406 0, /* flags */ 407 NULL, NULL)); 408 } 409 410 static void 411 establish_chip_type(struct fdc_softc *fdc, 412 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 413 bus_space_handle_t handle) 414 { 415 uint8_t v; 416 417 /* 418 * This hack from Chris Torek: apparently DOR really 419 * addresses MSR/DRS on a 82072. 420 * We used to rely on the VERSION command to tell the 421 * difference (which did not work). 422 */ 423 424 /* First, check the size of the register bank */ 425 if (size < 8) 426 /* It isn't a 82077 */ 427 return; 428 429 /* Then probe the DOR register offset */ 430 if (bus_space_probe(tag, addr, 431 1, /* probe size */ 432 FDREG77_DOR, /* offset */ 433 0, /* flags */ 434 NULL, NULL) == 0) { 435 436 /* It isn't a 82077 */ 437 return; 438 } 439 440 v = bus_space_read_1(tag, handle, FDREG77_DOR); 441 if (v == NE7_RQM) { 442 /* 443 * Value in DOR looks like it's really MSR 444 */ 445 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 446 v = bus_space_read_1(tag, handle, FDREG77_DOR); 447 if (v == NE7_RQM) { 448 /* 449 * The value in the DOR didn't stick; 450 * it isn't a 82077 451 */ 452 return; 453 } 454 } 455 456 fdc->sc_flags |= FDC_82077; 457 } 458 459 /* 460 * Arguments passed between fdcattach and fdprobe. 461 */ 462 struct fdc_attach_args { 463 int fa_drive; 464 struct fd_type *fa_deftype; 465 }; 466 467 /* 468 * Print the location of a disk drive (called just before attaching the 469 * the drive). If `fdc' is not NULL, the drive was found but was not 470 * in the system config file; print the drive name as well. 471 * Return QUIET (config_find ignores this if the device was configured) to 472 * avoid printing `fdN not configured' messages. 473 */ 474 int 475 fdprint(void *aux, const char *fdc) 476 { 477 register struct fdc_attach_args *fa = aux; 478 479 if (!fdc) 480 aprint_normal(" drive %d", fa->fa_drive); 481 return (QUIET); 482 } 483 484 /* 485 * Configure several parameters and features on the FDC. 486 * Return 0 on success. 487 */ 488 static int 489 fdconf(struct fdc_softc *fdc) 490 { 491 int vroom; 492 493 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 494 return (-1); 495 496 /* 497 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 498 * the PROM thinks is appropriate. 499 */ 500 if ((vroom = fdc->sc_status[7]) == 0) 501 vroom = 0x64; 502 503 /* Configure controller to use FIFO and Implied Seek */ 504 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 505 return (-1); 506 if (fdc_wrfifo(fdc, vroom) != 0) 507 return (-1); 508 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 509 return (-1); 510 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 511 return (-1); 512 /* No result phase for the NE7CMD_CFG command */ 513 514 if ((fdc->sc_flags & FDC_82077) != 0) { 515 /* Lock configuration across soft resets. */ 516 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 517 fdcresult(fdc) != 1) { 518 #ifdef DEBUG 519 printf("fdconf: CFGLOCK failed"); 520 #endif 521 return (-1); 522 } 523 } 524 525 return (0); 526 #if 0 527 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 528 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 529 if (fdc_debug) 530 printf("[version cmd]"); 531 } 532 #endif 533 } 534 535 void 536 fdcattach_mainbus(device_t parent, device_t self, void *aux) 537 { 538 struct fdc_softc *fdc = device_private(self); 539 struct mainbus_attach_args *ma = aux; 540 541 fdc->sc_dev = self; 542 fdc->sc_bustag = ma->ma_bustag; 543 544 if (bus_space_map( 545 ma->ma_bustag, 546 ma->ma_paddr, 547 ma->ma_size, 548 BUS_SPACE_MAP_LINEAR, 549 &fdc->sc_handle) != 0) { 550 printf("%s: cannot map registers\n", device_xname(self)); 551 return; 552 } 553 554 establish_chip_type(fdc, 555 ma->ma_bustag, 556 ma->ma_paddr, 557 ma->ma_size, 558 fdc->sc_handle); 559 560 if (fdcattach(fdc, ma->ma_pri) != 0) 561 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size); 562 } 563 564 void 565 fdcattach_obio(device_t parent, device_t self, void *aux) 566 { 567 struct fdc_softc *fdc = device_private(self); 568 union obio_attach_args *uoba = aux; 569 struct sbus_attach_args *sa = &uoba->uoba_sbus; 570 571 if (sa->sa_nintr == 0) { 572 printf(": no interrupt line configured\n"); 573 return; 574 } 575 576 fdc->sc_dev = self; 577 fdc->sc_bustag = sa->sa_bustag; 578 579 if (sbus_bus_map(sa->sa_bustag, 580 sa->sa_slot, sa->sa_offset, sa->sa_size, 581 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) { 582 printf("%s: cannot map control registers\n", 583 device_xname(self)); 584 return; 585 } 586 587 establish_chip_type(fdc, 588 sa->sa_bustag, 589 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset), 590 sa->sa_size, 591 fdc->sc_handle); 592 593 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 594 printf(": no drives attached\n"); 595 return; 596 } 597 598 if (fdcattach(fdc, sa->sa_pri) != 0) 599 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 600 } 601 602 int 603 fdcattach(struct fdc_softc *fdc, int pri) 604 { 605 struct fdc_attach_args fa; 606 int drive_attached; 607 char code; 608 609 callout_init(&fdc->sc_timo_ch, 0); 610 callout_init(&fdc->sc_intr_ch, 0); 611 612 fdc->sc_state = DEVIDLE; 613 fdc->sc_itask = FDC_ITASK_NONE; 614 fdc->sc_istatus = FDC_ISTATUS_NONE; 615 fdc->sc_flags |= FDC_EIS; 616 TAILQ_INIT(&fdc->sc_drives); 617 618 if ((fdc->sc_flags & FDC_82077) != 0) { 619 fdc->sc_reg_msr = FDREG77_MSR; 620 fdc->sc_reg_fifo = FDREG77_FIFO; 621 fdc->sc_reg_dor = FDREG77_DOR; 622 fdc->sc_reg_dir = FDREG77_DIR; 623 code = '7'; 624 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 625 } else { 626 fdc->sc_reg_msr = FDREG72_MSR; 627 fdc->sc_reg_fifo = FDREG72_FIFO; 628 fdc->sc_reg_dor = 0; 629 code = '2'; 630 } 631 632 /* 633 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 634 * Note: CFG_EFIFO is active-low, initial threshold value: 8 635 */ 636 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 637 if (fdconf(fdc) != 0) { 638 printf(": no drives attached\n"); 639 return (-1); 640 } 641 642 fdciop = &fdc->sc_io; 643 if (bus_intr_establish2(fdc->sc_bustag, pri, 0, 644 fdc_c_hwintr, fdc, 645 #ifdef notyet /* XXX bsd_fdintr.s needs to be fixed for MI softint(9) */ 646 fdchwintr 647 #else 648 NULL 649 #endif 650 ) == NULL) { 651 printf("\n%s: cannot register interrupt handler\n", 652 device_xname(fdc->sc_dev)); 653 return (-1); 654 } 655 656 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc); 657 if (fdc->sc_sicookie == NULL) { 658 printf("\n%s: cannot register soft interrupt handler\n", 659 device_xname(fdc->sc_dev)); 660 return (-1); 661 } 662 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code); 663 664 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 665 device_xname(fdc->sc_dev), "intr"); 666 667 /* physical limit: four drives per controller. */ 668 drive_attached = 0; 669 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 670 fa.fa_deftype = NULL; /* unknown */ 671 fa.fa_deftype = &fd_types[0]; /* XXX */ 672 if (config_found(fdc->sc_dev, (void *)&fa, fdprint) != NULL) 673 drive_attached = 1; 674 } 675 676 if (drive_attached == 0) { 677 /* XXX - dis-establish interrupts here */ 678 /* return (-1); */ 679 } 680 681 return (0); 682 } 683 684 int 685 fdmatch(device_t parent, cfdata_t match, void *aux) 686 { 687 struct fdc_softc *fdc = device_private(parent); 688 bus_space_tag_t t = fdc->sc_bustag; 689 bus_space_handle_t h = fdc->sc_handle; 690 struct fdc_attach_args *fa = aux; 691 int drive = fa->fa_drive; 692 int n, ok; 693 694 if (drive > 0) 695 /* XXX - for now, punt on more than one drive */ 696 return (0); 697 698 if ((fdc->sc_flags & FDC_82077) != 0) { 699 /* select drive and turn on motor */ 700 bus_space_write_1(t, h, fdc->sc_reg_dor, 701 drive | FDO_FRST | FDO_MOEN(drive)); 702 /* wait for motor to spin up */ 703 delay(250000); 704 } else { 705 auxregbisc(AUXIO4C_FDS, 0); 706 } 707 fdc->sc_nstat = 0; 708 fdc_wrfifo(fdc, NE7CMD_RECAL); 709 fdc_wrfifo(fdc, drive); 710 711 /* Wait for recalibration to complete */ 712 for (n = 0; n < 10000; n++) { 713 uint8_t v; 714 715 delay(1000); 716 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 717 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 718 /* wait a bit longer till device *really* is ready */ 719 delay(100000); 720 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 721 break; 722 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 723 /* 724 * Got `invalid command'; we interpret it 725 * to mean that the re-calibrate hasn't in 726 * fact finished yet 727 */ 728 continue; 729 break; 730 } 731 } 732 n = fdc->sc_nstat; 733 #ifdef FD_DEBUG 734 if (fdc_debug) { 735 int i; 736 printf("fdprobe: %d stati:", n); 737 for (i = 0; i < n; i++) 738 printf(" 0x%x", fdc->sc_status[i]); 739 printf("\n"); 740 } 741 #endif 742 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 743 744 /* turn off motor */ 745 if ((fdc->sc_flags & FDC_82077) != 0) { 746 /* deselect drive and turn motor off */ 747 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 748 } else { 749 auxregbisc(0, AUXIO4C_FDS); 750 } 751 752 return (ok); 753 } 754 755 /* 756 * Controller is working, and drive responded. Attach it. 757 */ 758 void 759 fdattach(device_t parent, device_t self, void *aux) 760 { 761 struct fdc_softc *fdc = device_private(parent); 762 struct fd_softc *fd = device_private(self); 763 struct fdc_attach_args *fa = aux; 764 struct fd_type *type = fa->fa_deftype; 765 int drive = fa->fa_drive; 766 767 fd->sc_dv = self; 768 769 callout_init(&fd->sc_motoron_ch, 0); 770 callout_init(&fd->sc_motoroff_ch, 0); 771 772 /* XXX Allow `flags' to override device type? */ 773 774 if (type) 775 printf(": %s %d cyl, %d head, %d sec\n", type->name, 776 type->cylinders, type->heads, type->sectrac); 777 else 778 printf(": density unknown\n"); 779 780 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 781 fd->sc_cylin = -1; 782 fd->sc_drive = drive; 783 fd->sc_deftype = type; 784 fdc->sc_fd[drive] = fd; 785 786 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 787 fdc_wrfifo(fdc, type->steprate); 788 /* XXX head load time == 6ms */ 789 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 790 791 /* 792 * Initialize and attach the disk structure. 793 */ 794 disk_init(&fd->sc_dk, device_xname(fd->sc_dv), &fddkdriver); 795 disk_attach(&fd->sc_dk); 796 797 /* 798 * Establish a mountroot_hook anyway in case we booted 799 * with RB_ASKNAME and get selected as the boot device. 800 */ 801 mountroothook_establish(fd_mountroot_hook, fd->sc_dv); 802 803 /* Make sure the drive motor gets turned off at shutdown time. */ 804 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown)) 805 aprint_error_dev(self, "couldn't establish power handler\n"); 806 } 807 808 bool fdshutdown(device_t self, int how) 809 { 810 struct fd_softc *fd = device_private(self); 811 812 fd_motor_off(fd); 813 return true; 814 } 815 816 bool fdsuspend(device_t self, const pmf_qual_t *qual) 817 { 818 819 return fdshutdown(self, boothowto); 820 } 821 822 823 inline struct fd_type * 824 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 825 { 826 int type = FDTYPE(dev); 827 828 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 829 return (NULL); 830 return (type ? &fd_types[type - 1] : fd->sc_deftype); 831 } 832 833 void 834 fdstrategy(struct buf *bp) 835 { 836 struct fd_softc *fd; 837 int unit = FDUNIT(bp->b_dev); 838 int sz; 839 int s; 840 841 /* Valid unit, controller, and request? */ 842 if ((fd = device_lookup_private(&fd_cd, unit)) == 0 || 843 bp->b_blkno < 0 || 844 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 845 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 846 (bp->b_flags & B_FORMAT) == 0)) { 847 bp->b_error = EINVAL; 848 goto done; 849 } 850 851 /* If it's a null transfer, return immediately. */ 852 if (bp->b_bcount == 0) 853 goto done; 854 855 sz = howmany(bp->b_bcount, DEV_BSIZE); 856 857 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 858 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 859 - bp->b_blkno; 860 if (sz == 0) { 861 /* If exactly at end of disk, return EOF. */ 862 bp->b_resid = bp->b_bcount; 863 goto done; 864 } 865 if (sz < 0) { 866 /* If past end of disk, return EINVAL. */ 867 bp->b_error = EINVAL; 868 goto done; 869 } 870 /* Otherwise, truncate request. */ 871 bp->b_bcount = sz << DEV_BSHIFT; 872 } 873 874 bp->b_rawblkno = bp->b_blkno; 875 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 876 (FD_BSIZE(fd) * fd->sc_type->seccyl); 877 878 #ifdef FD_DEBUG 879 if (fdc_debug > 1) 880 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 881 (long long)bp->b_blkno, bp->b_bcount, 882 (long long)fd->sc_blkno, bp->b_cylinder); 883 #endif 884 885 /* Queue transfer on drive, activate drive and controller if idle. */ 886 s = splbio(); 887 bufq_put(fd->sc_q, bp); 888 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 889 if (fd->sc_active == 0) 890 fdstart(fd); 891 #ifdef DIAGNOSTIC 892 else { 893 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 894 if (fdc->sc_state == DEVIDLE) { 895 printf("fdstrategy: controller inactive\n"); 896 fdcstart(fdc); 897 } 898 } 899 #endif 900 splx(s); 901 return; 902 903 done: 904 /* Toss transfer; we're done early. */ 905 biodone(bp); 906 } 907 908 void 909 fdstart(struct fd_softc *fd) 910 { 911 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 912 int active = fdc->sc_drives.tqh_first != 0; 913 914 /* Link into controller queue. */ 915 fd->sc_active = 1; 916 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 917 918 /* If controller not already active, start it. */ 919 if (!active) 920 fdcstart(fdc); 921 } 922 923 void 924 fdfinish(struct fd_softc *fd, struct buf *bp) 925 { 926 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 927 928 /* 929 * Move this drive to the end of the queue to give others a `fair' 930 * chance. We only force a switch if N operations are completed while 931 * another drive is waiting to be serviced, since there is a long motor 932 * startup delay whenever we switch. 933 */ 934 (void)bufq_get(fd->sc_q); 935 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 936 fd->sc_ops = 0; 937 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 938 if (bufq_peek(fd->sc_q) != NULL) { 939 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 940 } else 941 fd->sc_active = 0; 942 } 943 bp->b_resid = fd->sc_bcount; 944 fd->sc_skip = 0; 945 946 biodone(bp); 947 /* turn off motor 5s from now */ 948 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 949 fdc->sc_state = DEVIDLE; 950 } 951 952 void 953 fdc_reset(struct fdc_softc *fdc) 954 { 955 bus_space_tag_t t = fdc->sc_bustag; 956 bus_space_handle_t h = fdc->sc_handle; 957 958 if ((fdc->sc_flags & FDC_82077) != 0) { 959 bus_space_write_1(t, h, fdc->sc_reg_dor, 960 FDO_FDMAEN | FDO_MOEN(0)); 961 } 962 963 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 964 delay(10); 965 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 966 967 if ((fdc->sc_flags & FDC_82077) != 0) { 968 bus_space_write_1(t, h, fdc->sc_reg_dor, 969 FDO_FRST | FDO_FDMAEN | FDO_DS); 970 } 971 #ifdef FD_DEBUG 972 if (fdc_debug) 973 printf("fdc reset\n"); 974 #endif 975 } 976 977 void 978 fd_set_motor(struct fdc_softc *fdc) 979 { 980 struct fd_softc *fd; 981 u_char status; 982 int n; 983 984 if ((fdc->sc_flags & FDC_82077) != 0) { 985 status = FDO_FRST | FDO_FDMAEN; 986 if ((fd = fdc->sc_drives.tqh_first) != NULL) 987 status |= fd->sc_drive; 988 989 for (n = 0; n < 4; n++) 990 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 991 status |= FDO_MOEN(n); 992 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 993 fdc->sc_reg_dor, status); 994 } else { 995 996 for (n = 0; n < 4; n++) { 997 if ((fd = fdc->sc_fd[n]) != NULL && 998 (fd->sc_flags & FD_MOTOR) != 0) { 999 auxregbisc(AUXIO4C_FDS, 0); 1000 return; 1001 } 1002 } 1003 auxregbisc(0, AUXIO4C_FDS); 1004 } 1005 } 1006 1007 void 1008 fd_motor_off(void *arg) 1009 { 1010 struct fd_softc *fd = arg; 1011 int s; 1012 1013 s = splbio(); 1014 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1015 fd_set_motor(device_private(device_parent(fd->sc_dv))); 1016 splx(s); 1017 } 1018 1019 void 1020 fd_motor_on(void *arg) 1021 { 1022 struct fd_softc *fd = arg; 1023 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 1024 int s; 1025 1026 s = splbio(); 1027 fd->sc_flags &= ~FD_MOTOR_WAIT; 1028 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1029 (void) fdcstate(fdc); 1030 splx(s); 1031 } 1032 1033 /* 1034 * Get status bytes off the FDC after a command has finished 1035 * Returns the number of status bytes read; -1 on error. 1036 * The return value is also stored in `sc_nstat'. 1037 */ 1038 int 1039 fdcresult(struct fdc_softc *fdc) 1040 { 1041 bus_space_tag_t t = fdc->sc_bustag; 1042 bus_space_handle_t h = fdc->sc_handle; 1043 int j, n = 0; 1044 1045 for (j = 10000; j; j--) { 1046 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1047 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1048 if (v == NE7_RQM) 1049 return (fdc->sc_nstat = n); 1050 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1051 if (n >= sizeof(fdc->sc_status)) { 1052 log(LOG_ERR, "fdcresult: overrun\n"); 1053 return (-1); 1054 } 1055 fdc->sc_status[n++] = 1056 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1057 } else 1058 delay(1); 1059 } 1060 1061 log(LOG_ERR, "fdcresult: timeout\n"); 1062 return (fdc->sc_nstat = -1); 1063 } 1064 1065 /* 1066 * Write a command byte to the FDC. 1067 * Returns 0 on success; -1 on failure (i.e. timeout) 1068 */ 1069 int 1070 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1071 { 1072 bus_space_tag_t t = fdc->sc_bustag; 1073 bus_space_handle_t h = fdc->sc_handle; 1074 int i; 1075 1076 for (i = 100000; i-- > 0;) { 1077 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1078 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1079 /* The chip is ready */ 1080 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1081 return (0); 1082 } 1083 delay(1); 1084 } 1085 return (-1); 1086 } 1087 1088 int 1089 fdc_diskchange(struct fdc_softc *fdc) 1090 { 1091 1092 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1093 bus_space_tag_t t = fdc->sc_bustag; 1094 bus_space_handle_t h = fdc->sc_handle; 1095 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1096 return ((v & FDI_DCHG) != 0); 1097 } else if (CPU_ISSUN4C) { 1098 return ((*AUXIO4C_REG & AUXIO4C_FDC) != 0); 1099 } 1100 return (0); 1101 } 1102 1103 int 1104 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1105 { 1106 int unit, pmask; 1107 struct fd_softc *fd; 1108 struct fd_type *type; 1109 1110 unit = FDUNIT(dev); 1111 fd = device_lookup_private(&fd_cd, unit); 1112 if (fd == NULL) 1113 return (ENXIO); 1114 type = fd_dev_to_type(fd, dev); 1115 if (type == NULL) 1116 return (ENXIO); 1117 1118 if ((fd->sc_flags & FD_OPEN) != 0 && 1119 fd->sc_type != type) 1120 return (EBUSY); 1121 1122 fd->sc_type = type; 1123 fd->sc_cylin = -1; 1124 fd->sc_flags |= FD_OPEN; 1125 1126 /* 1127 * Only update the disklabel if we're not open anywhere else. 1128 */ 1129 if (fd->sc_dk.dk_openmask == 0) 1130 fdgetdisklabel(dev); 1131 1132 pmask = (1 << DISKPART(dev)); 1133 1134 switch (fmt) { 1135 case S_IFCHR: 1136 fd->sc_dk.dk_copenmask |= pmask; 1137 break; 1138 1139 case S_IFBLK: 1140 fd->sc_dk.dk_bopenmask |= pmask; 1141 break; 1142 } 1143 fd->sc_dk.dk_openmask = 1144 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1145 1146 return (0); 1147 } 1148 1149 int 1150 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1151 { 1152 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1153 int pmask = (1 << DISKPART(dev)); 1154 1155 fd->sc_flags &= ~FD_OPEN; 1156 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1157 1158 switch (fmt) { 1159 case S_IFCHR: 1160 fd->sc_dk.dk_copenmask &= ~pmask; 1161 break; 1162 1163 case S_IFBLK: 1164 fd->sc_dk.dk_bopenmask &= ~pmask; 1165 break; 1166 } 1167 fd->sc_dk.dk_openmask = 1168 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1169 1170 return (0); 1171 } 1172 1173 int 1174 fdread(dev_t dev, struct uio *uio, int flag) 1175 { 1176 1177 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1178 } 1179 1180 int 1181 fdwrite(dev_t dev, struct uio *uio, int flag) 1182 { 1183 1184 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1185 } 1186 1187 void 1188 fdcstart(struct fdc_softc *fdc) 1189 { 1190 1191 #ifdef DIAGNOSTIC 1192 /* only got here if controller's drive queue was inactive; should 1193 be in idle state */ 1194 if (fdc->sc_state != DEVIDLE) { 1195 printf("fdcstart: not idle\n"); 1196 return; 1197 } 1198 #endif 1199 (void) fdcstate(fdc); 1200 } 1201 1202 static void 1203 fdcpstatus(int n, struct fdc_softc *fdc) 1204 { 1205 char bits[64]; 1206 1207 switch (n) { 1208 case 0: 1209 printf("\n"); 1210 break; 1211 case 2: 1212 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1213 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); 1214 break; 1215 case 7: 1216 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); 1217 printf(" (st0 %s", bits); 1218 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); 1219 printf(" st1 %s", bits); 1220 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); 1221 printf(" st2 %s", bits); 1222 printf(" cyl %d head %d sec %d)\n", 1223 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1224 break; 1225 #ifdef DIAGNOSTIC 1226 default: 1227 printf("\nfdcstatus: weird size"); 1228 break; 1229 #endif 1230 } 1231 } 1232 1233 void 1234 fdcstatus(struct fdc_softc *fdc, const char *s) 1235 { 1236 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1237 int n; 1238 1239 /* Just print last status */ 1240 n = fdc->sc_nstat; 1241 1242 #if 0 1243 /* 1244 * A 82072 seems to return <invalid command> on 1245 * gratuitous Sense Interrupt commands. 1246 */ 1247 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1248 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1249 (void) fdcresult(fdc); 1250 n = 2; 1251 } 1252 #endif 1253 1254 printf("%s: %s: state %d", 1255 fd ? device_xname(fd->sc_dv) : "fdc", s, fdc->sc_state); 1256 1257 fdcpstatus(n, fdc); 1258 } 1259 1260 void 1261 fdctimeout(void *arg) 1262 { 1263 struct fdc_softc *fdc = arg; 1264 struct fd_softc *fd; 1265 int s; 1266 1267 s = splbio(); 1268 fd = fdc->sc_drives.tqh_first; 1269 if (fd == NULL) { 1270 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1271 device_xname(fdc->sc_dev), 1272 fdc->sc_state, fdc->sc_istatus); 1273 fdc->sc_state = DEVIDLE; 1274 goto out; 1275 } 1276 1277 if (bufq_peek(fd->sc_q) != NULL) 1278 fdc->sc_state++; 1279 else 1280 fdc->sc_state = DEVIDLE; 1281 1282 (void) fdcstate(fdc); 1283 out: 1284 splx(s); 1285 1286 } 1287 1288 void 1289 fdcpseudointr(void *arg) 1290 { 1291 struct fdc_softc *fdc = arg; 1292 int s; 1293 1294 /* Just ensure it has the right spl. */ 1295 s = splbio(); 1296 (void) fdcstate(fdc); 1297 splx(s); 1298 } 1299 1300 1301 /* 1302 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1303 * handler is available. Unfortunately, we have no reliable way to 1304 * determine that the interrupt really came from the floppy controller; 1305 * just hope that the other devices that share this interrupt level 1306 * can do better.. 1307 */ 1308 int 1309 fdc_c_hwintr(void *arg) 1310 { 1311 struct fdc_softc *fdc = arg; 1312 bus_space_tag_t t = fdc->sc_bustag; 1313 bus_space_handle_t h = fdc->sc_handle; 1314 1315 switch (fdc->sc_itask) { 1316 case FDC_ITASK_NONE: 1317 return (0); 1318 case FDC_ITASK_SENSEI: 1319 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1320 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1321 else 1322 fdc->sc_istatus = FDC_ISTATUS_DONE; 1323 softint_schedule(fdc->sc_sicookie); 1324 return (1); 1325 case FDC_ITASK_RESULT: 1326 if (fdcresult(fdc) == -1) 1327 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1328 else 1329 fdc->sc_istatus = FDC_ISTATUS_DONE; 1330 softint_schedule(fdc->sc_sicookie); 1331 return (1); 1332 case FDC_ITASK_DMA: 1333 /* Proceed with pseudo-DMA below */ 1334 break; 1335 default: 1336 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1337 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1338 softint_schedule(fdc->sc_sicookie); 1339 return (1); 1340 } 1341 1342 /* 1343 * Pseudo DMA in progress 1344 */ 1345 for (;;) { 1346 uint8_t msr; 1347 1348 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1349 1350 if ((msr & NE7_RQM) == 0) 1351 /* That's all this round */ 1352 break; 1353 1354 if ((msr & NE7_NDM) == 0) { 1355 /* Execution phase finished, get result. */ 1356 fdcresult(fdc); 1357 fdc->sc_istatus = FDC_ISTATUS_DONE; 1358 softint_schedule(fdc->sc_sicookie); 1359 break; 1360 } 1361 1362 if (fdc->sc_tc == 0) 1363 /* For some reason the controller wants to transfer 1364 more data then what we want to transfer. */ 1365 panic("fdc: overrun"); 1366 1367 /* Another byte can be transferred */ 1368 if ((msr & NE7_DIO) != 0) 1369 *fdc->sc_data = 1370 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1371 else 1372 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1373 *fdc->sc_data); 1374 1375 fdc->sc_data++; 1376 if (--fdc->sc_tc == 0) { 1377 FTC_FLIP; 1378 break; 1379 } 1380 } 1381 return (1); 1382 } 1383 1384 void 1385 fdcswintr(void *arg) 1386 { 1387 struct fdc_softc *fdc = arg; 1388 1389 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1390 /* This (software) interrupt is not for us */ 1391 return; 1392 1393 switch (fdc->sc_istatus) { 1394 case FDC_ISTATUS_ERROR: 1395 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1396 break; 1397 case FDC_ISTATUS_SPURIOUS: 1398 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1399 break; 1400 } 1401 1402 fdcstate(fdc); 1403 return; 1404 } 1405 1406 int 1407 fdcstate(struct fdc_softc *fdc) 1408 { 1409 1410 #define st0 fdc->sc_status[0] 1411 #define st1 fdc->sc_status[1] 1412 #define cyl fdc->sc_status[1] 1413 #define FDC_WRFIFO(fdc, c) do { \ 1414 if (fdc_wrfifo(fdc, (c))) { \ 1415 goto xxx; \ 1416 } \ 1417 } while(0) 1418 1419 struct fd_softc *fd; 1420 struct buf *bp; 1421 int read, head, sec, nblks; 1422 struct fd_type *type; 1423 struct ne7_fd_formb *finfo = NULL; 1424 1425 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1426 /* Prevent loop if the reset sequence produces errors */ 1427 if (fdc->sc_state != RESETCOMPLETE && 1428 fdc->sc_state != RECALWAIT && 1429 fdc->sc_state != RECALCOMPLETE) 1430 fdc->sc_state = DORESET; 1431 } 1432 1433 /* Clear I task/status field */ 1434 fdc->sc_istatus = FDC_ISTATUS_NONE; 1435 fdc->sc_itask = FDC_ITASK_NONE; 1436 1437 loop: 1438 /* Is there a drive for the controller to do a transfer with? */ 1439 fd = fdc->sc_drives.tqh_first; 1440 if (fd == NULL) { 1441 fdc->sc_state = DEVIDLE; 1442 return (0); 1443 } 1444 1445 /* Is there a transfer to this drive? If not, deactivate drive. */ 1446 bp = bufq_peek(fd->sc_q); 1447 if (bp == NULL) { 1448 fd->sc_ops = 0; 1449 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1450 fd->sc_active = 0; 1451 goto loop; 1452 } 1453 1454 if (bp->b_flags & B_FORMAT) 1455 finfo = (struct ne7_fd_formb *)bp->b_data; 1456 1457 switch (fdc->sc_state) { 1458 case DEVIDLE: 1459 fdc->sc_errors = 0; 1460 fd->sc_skip = 0; 1461 fd->sc_bcount = bp->b_bcount; 1462 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1463 callout_stop(&fd->sc_motoroff_ch); 1464 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1465 fdc->sc_state = MOTORWAIT; 1466 return (1); 1467 } 1468 if ((fd->sc_flags & FD_MOTOR) == 0) { 1469 /* Turn on the motor, being careful about pairing. */ 1470 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1471 if (ofd && ofd->sc_flags & FD_MOTOR) { 1472 callout_stop(&ofd->sc_motoroff_ch); 1473 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1474 } 1475 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1476 fd_set_motor(fdc); 1477 fdc->sc_state = MOTORWAIT; 1478 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1479 /* Allow .25s for motor to stabilize. */ 1480 callout_reset(&fd->sc_motoron_ch, hz / 4, 1481 fd_motor_on, fd); 1482 } else { 1483 fd->sc_flags &= ~FD_MOTOR_WAIT; 1484 goto loop; 1485 } 1486 return (1); 1487 } 1488 /* Make sure the right drive is selected. */ 1489 fd_set_motor(fdc); 1490 1491 if (fdc_diskchange(fdc)) 1492 goto dodskchg; 1493 1494 /*FALLTHROUGH*/ 1495 case DOSEEK: 1496 doseek: 1497 if ((fdc->sc_flags & FDC_EIS) && 1498 (bp->b_flags & B_FORMAT) == 0) { 1499 fd->sc_cylin = bp->b_cylinder; 1500 /* We use implied seek */ 1501 goto doio; 1502 } 1503 1504 if (fd->sc_cylin == bp->b_cylinder) 1505 goto doio; 1506 1507 fd->sc_cylin = -1; 1508 fdc->sc_state = SEEKWAIT; 1509 fdc->sc_nstat = 0; 1510 1511 iostat_seek(fd->sc_dk.dk_stats); 1512 1513 disk_busy(&fd->sc_dk); 1514 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1515 1516 /* specify command */ 1517 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1518 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1519 /* XXX head load time == 6ms */ 1520 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1521 1522 fdc->sc_itask = FDC_ITASK_SENSEI; 1523 /* seek function */ 1524 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1525 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1526 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1527 return (1); 1528 1529 case DODSKCHG: 1530 dodskchg: 1531 /* 1532 * Disk change: force a seek operation by going to cyl 1 1533 * followed by a recalibrate. 1534 */ 1535 disk_busy(&fd->sc_dk); 1536 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1537 fd->sc_cylin = -1; 1538 fdc->sc_nstat = 0; 1539 fdc->sc_state = DSKCHGWAIT; 1540 1541 fdc->sc_itask = FDC_ITASK_SENSEI; 1542 /* seek function */ 1543 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1544 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1545 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1546 return (1); 1547 1548 case DSKCHGWAIT: 1549 callout_stop(&fdc->sc_timo_ch); 1550 disk_unbusy(&fd->sc_dk, 0, 0); 1551 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1552 cyl != 1 * fd->sc_type->step) { 1553 fdcstatus(fdc, "dskchg seek failed"); 1554 fdc->sc_state = DORESET; 1555 } else 1556 fdc->sc_state = DORECAL; 1557 1558 if (fdc_diskchange(fdc)) { 1559 printf("%s: cannot clear disk change status\n", 1560 device_xname(fdc->sc_dev)); 1561 fdc->sc_state = DORESET; 1562 } 1563 goto loop; 1564 1565 case DOIO: 1566 doio: 1567 if (finfo != NULL) 1568 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1569 (char *)finfo; 1570 type = fd->sc_type; 1571 sec = fd->sc_blkno % type->seccyl; 1572 nblks = type->seccyl - sec; 1573 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1574 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1575 fd->sc_nblks = nblks; 1576 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1577 head = sec / type->sectrac; 1578 sec -= head * type->sectrac; 1579 #ifdef DIAGNOSTIC 1580 {int block; 1581 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1582 if (block != fd->sc_blkno) { 1583 printf("fdcintr: block %d != blkno %d\n", block, (int)fd->sc_blkno); 1584 #ifdef DDB 1585 Debugger(); 1586 #endif 1587 }} 1588 #endif 1589 read = bp->b_flags & B_READ; 1590 1591 /* Setup for pseudo DMA */ 1592 fdc->sc_data = (char *)bp->b_data + fd->sc_skip; 1593 fdc->sc_tc = fd->sc_nbytes; 1594 1595 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1596 fdc->sc_reg_drs, type->rate); 1597 #ifdef FD_DEBUG 1598 if (fdc_debug > 1) 1599 printf("fdcstate: doio: %s drive %d " 1600 "track %d head %d sec %d nblks %d\n", 1601 finfo ? "format" : 1602 (read ? "read" : "write"), 1603 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1604 #endif 1605 fdc->sc_state = IOCOMPLETE; 1606 fdc->sc_itask = FDC_ITASK_DMA; 1607 fdc->sc_nstat = 0; 1608 1609 disk_busy(&fd->sc_dk); 1610 1611 /* allow 3 seconds for operation */ 1612 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1613 1614 if (finfo != NULL) { 1615 /* formatting */ 1616 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1617 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1618 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1619 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1620 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1621 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1622 } else { 1623 if (read) 1624 FDC_WRFIFO(fdc, NE7CMD_READ); 1625 else 1626 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1627 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1628 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1629 FDC_WRFIFO(fdc, head); 1630 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1631 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1632 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1633 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1634 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1635 } 1636 1637 return (1); /* will return later */ 1638 1639 case SEEKWAIT: 1640 callout_stop(&fdc->sc_timo_ch); 1641 fdc->sc_state = SEEKCOMPLETE; 1642 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1643 /* allow 1/50 second for heads to settle */ 1644 callout_reset(&fdc->sc_intr_ch, hz / 50, 1645 fdcpseudointr, fdc); 1646 return (1); /* will return later */ 1647 } 1648 /*FALLTHROUGH*/ 1649 case SEEKCOMPLETE: 1650 /* no data on seek */ 1651 disk_unbusy(&fd->sc_dk, 0, 0); 1652 1653 /* Make sure seek really happened. */ 1654 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1655 cyl != bp->b_cylinder * fd->sc_type->step) { 1656 #ifdef FD_DEBUG 1657 if (fdc_debug) 1658 fdcstatus(fdc, "seek failed"); 1659 #endif 1660 fdcretry(fdc); 1661 goto loop; 1662 } 1663 fd->sc_cylin = bp->b_cylinder; 1664 goto doio; 1665 1666 case IOTIMEDOUT: 1667 /* 1668 * Try to abort the I/O operation without resetting 1669 * the chip first. Poke TC and arrange to pick up 1670 * the timed out I/O command's status. 1671 */ 1672 fdc->sc_itask = FDC_ITASK_RESULT; 1673 fdc->sc_state = IOCLEANUPWAIT; 1674 fdc->sc_nstat = 0; 1675 /* 1/10 second should be enough */ 1676 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1677 FTC_FLIP; 1678 return (1); 1679 1680 case IOCLEANUPTIMEDOUT: 1681 case SEEKTIMEDOUT: 1682 case RECALTIMEDOUT: 1683 case RESETTIMEDOUT: 1684 case DSKCHGTIMEDOUT: 1685 fdcstatus(fdc, "timeout"); 1686 1687 /* All other timeouts always roll through to a chip reset */ 1688 fdcretry(fdc); 1689 1690 /* Force reset, no matter what fdcretry() says */ 1691 fdc->sc_state = DORESET; 1692 goto loop; 1693 1694 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1695 callout_stop(&fdc->sc_timo_ch); 1696 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1697 (bp->b_flags & B_READ)); 1698 fdcretry(fdc); 1699 goto loop; 1700 1701 case IOCOMPLETE: /* IO DONE, post-analyze */ 1702 callout_stop(&fdc->sc_timo_ch); 1703 1704 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1705 (bp->b_flags & B_READ)); 1706 1707 if (fdc->sc_nstat != 7 || st1 != 0 || 1708 ((st0 & 0xf8) != 0 && 1709 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1710 #ifdef FD_DEBUG 1711 if (fdc_debug) { 1712 fdcstatus(fdc, 1713 bp->b_flags & B_READ 1714 ? "read failed" : "write failed"); 1715 printf("blkno %lld nblks %d nstat %d tc %d\n", 1716 (long long)fd->sc_blkno, fd->sc_nblks, 1717 fdc->sc_nstat, fdc->sc_tc); 1718 } 1719 #endif 1720 if (fdc->sc_nstat == 7 && 1721 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1722 1723 /* 1724 * Silently retry overruns if no other 1725 * error bit is set. Adjust threshold. 1726 */ 1727 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1728 if (thr < 15) { 1729 thr++; 1730 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1731 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1732 #ifdef FD_DEBUG 1733 if (fdc_debug) 1734 printf("fdc: %d -> threshold\n", thr); 1735 #endif 1736 fdconf(fdc); 1737 fdc->sc_overruns = 0; 1738 } 1739 if (++fdc->sc_overruns < 3) { 1740 fdc->sc_state = DOIO; 1741 goto loop; 1742 } 1743 } 1744 fdcretry(fdc); 1745 goto loop; 1746 } 1747 if (fdc->sc_errors) { 1748 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1749 fd->sc_skip / FD_BSIZE(fd), 1750 (struct disklabel *)NULL); 1751 printf("\n"); 1752 fdc->sc_errors = 0; 1753 } else { 1754 if (--fdc->sc_overruns < -20) { 1755 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1756 if (thr > 0) { 1757 thr--; 1758 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1759 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1760 #ifdef FD_DEBUG 1761 if (fdc_debug) 1762 printf("fdc: %d -> threshold\n", thr); 1763 #endif 1764 fdconf(fdc); 1765 } 1766 fdc->sc_overruns = 0; 1767 } 1768 } 1769 fd->sc_blkno += fd->sc_nblks; 1770 fd->sc_skip += fd->sc_nbytes; 1771 fd->sc_bcount -= fd->sc_nbytes; 1772 if (finfo == NULL && fd->sc_bcount > 0) { 1773 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1774 goto doseek; 1775 } 1776 fdfinish(fd, bp); 1777 goto loop; 1778 1779 case DORESET: 1780 /* try a reset, keep motor on */ 1781 fd_set_motor(fdc); 1782 delay(100); 1783 fdc->sc_nstat = 0; 1784 fdc->sc_itask = FDC_ITASK_SENSEI; 1785 fdc->sc_state = RESETCOMPLETE; 1786 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1787 fdc_reset(fdc); 1788 return (1); /* will return later */ 1789 1790 case RESETCOMPLETE: 1791 callout_stop(&fdc->sc_timo_ch); 1792 fdconf(fdc); 1793 1794 /* FALLTHROUGH */ 1795 case DORECAL: 1796 fdc->sc_state = RECALWAIT; 1797 fdc->sc_itask = FDC_ITASK_SENSEI; 1798 fdc->sc_nstat = 0; 1799 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1800 /* recalibrate function */ 1801 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1802 FDC_WRFIFO(fdc, fd->sc_drive); 1803 return (1); /* will return later */ 1804 1805 case RECALWAIT: 1806 callout_stop(&fdc->sc_timo_ch); 1807 fdc->sc_state = RECALCOMPLETE; 1808 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1809 /* allow 1/30 second for heads to settle */ 1810 callout_reset(&fdc->sc_intr_ch, hz / 30, 1811 fdcpseudointr, fdc); 1812 return (1); /* will return later */ 1813 } 1814 1815 case RECALCOMPLETE: 1816 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1817 #ifdef FD_DEBUG 1818 if (fdc_debug) 1819 fdcstatus(fdc, "recalibrate failed"); 1820 #endif 1821 fdcretry(fdc); 1822 goto loop; 1823 } 1824 fd->sc_cylin = 0; 1825 goto doseek; 1826 1827 case MOTORWAIT: 1828 if (fd->sc_flags & FD_MOTOR_WAIT) 1829 return (1); /* time's not up yet */ 1830 goto doseek; 1831 1832 default: 1833 fdcstatus(fdc, "stray interrupt"); 1834 return (1); 1835 } 1836 #ifdef DIAGNOSTIC 1837 panic("fdcintr: impossible"); 1838 #endif 1839 1840 xxx: 1841 /* 1842 * We get here if the chip locks up in FDC_WRFIFO() 1843 * Cancel any operation and schedule a reset 1844 */ 1845 callout_stop(&fdc->sc_timo_ch); 1846 fdcretry(fdc); 1847 (fdc)->sc_state = DORESET; 1848 goto loop; 1849 1850 #undef st0 1851 #undef st1 1852 #undef cyl 1853 } 1854 1855 void 1856 fdcretry(struct fdc_softc *fdc) 1857 { 1858 struct fd_softc *fd; 1859 struct buf *bp; 1860 int error = EIO; 1861 1862 fd = fdc->sc_drives.tqh_first; 1863 bp = bufq_peek(fd->sc_q); 1864 1865 fdc->sc_overruns = 0; 1866 if (fd->sc_opts & FDOPT_NORETRY) 1867 goto fail; 1868 1869 switch (fdc->sc_errors) { 1870 case 0: 1871 if (fdc->sc_nstat == 7 && 1872 (fdc->sc_status[0] & 0xd8) == 0x40 && 1873 (fdc->sc_status[1] & 0x2) == 0x2) { 1874 printf("%s: read-only medium\n", 1875 device_xname(fd->sc_dv)); 1876 error = EROFS; 1877 goto failsilent; 1878 } 1879 /* try again */ 1880 fdc->sc_state = 1881 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1882 break; 1883 1884 case 1: case 2: case 3: 1885 /* didn't work; try recalibrating */ 1886 fdc->sc_state = DORECAL; 1887 break; 1888 1889 case 4: 1890 if (fdc->sc_nstat == 7 && 1891 fdc->sc_status[0] == 0 && 1892 fdc->sc_status[1] == 0 && 1893 fdc->sc_status[2] == 0) { 1894 /* 1895 * We've retried a few times and we've got 1896 * valid status and all three status bytes 1897 * are zero. Assume this condition is the 1898 * result of no disk loaded into the drive. 1899 */ 1900 printf("%s: no medium?\n", 1901 device_xname(fd->sc_dv)); 1902 error = ENODEV; 1903 goto failsilent; 1904 } 1905 1906 /* still no go; reset the bastard */ 1907 fdc->sc_state = DORESET; 1908 break; 1909 1910 default: 1911 fail: 1912 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1913 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1914 fd->sc_skip / FD_BSIZE(fd), 1915 (struct disklabel *)NULL); 1916 printf("\n"); 1917 fdcstatus(fdc, "controller status"); 1918 } 1919 1920 failsilent: 1921 bp->b_error = error; 1922 fdfinish(fd, bp); 1923 } 1924 fdc->sc_errors++; 1925 } 1926 1927 int 1928 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1929 { 1930 struct fd_softc *fd; 1931 struct fdc_softc *fdc; 1932 struct fdformat_parms *form_parms; 1933 struct fdformat_cmd *form_cmd; 1934 struct ne7_fd_formb *fd_formb; 1935 int il[FD_MAX_NSEC + 1]; 1936 int unit; 1937 int i, j; 1938 int error; 1939 1940 unit = FDUNIT(dev); 1941 if (unit >= fd_cd.cd_ndevs) 1942 return (ENXIO); 1943 1944 fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 1945 fdc = device_private(device_parent(fd->sc_dv)); 1946 1947 switch (cmd) { 1948 case DIOCGDINFO: 1949 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1950 return 0; 1951 1952 case DIOCWLABEL: 1953 if ((flag & FWRITE) == 0) 1954 return EBADF; 1955 /* XXX do something */ 1956 return (0); 1957 1958 case DIOCWDINFO: 1959 if ((flag & FWRITE) == 0) 1960 return (EBADF); 1961 1962 error = setdisklabel(fd->sc_dk.dk_label, 1963 (struct disklabel *)addr, 0, 1964 fd->sc_dk.dk_cpulabel); 1965 if (error) 1966 return (error); 1967 1968 error = writedisklabel(dev, fdstrategy, 1969 fd->sc_dk.dk_label, 1970 fd->sc_dk.dk_cpulabel); 1971 return (error); 1972 1973 case DIOCLOCK: 1974 /* 1975 * Nothing to do here, really. 1976 */ 1977 return (0); 1978 1979 case DIOCEJECT: 1980 if (*(int *)addr == 0) { 1981 int part = DISKPART(dev); 1982 /* 1983 * Don't force eject: check that we are the only 1984 * partition open. If so, unlock it. 1985 */ 1986 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1987 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1988 fd->sc_dk.dk_openmask) { 1989 return (EBUSY); 1990 } 1991 } 1992 /* FALLTHROUGH */ 1993 case ODIOCEJECT: 1994 fd_do_eject(fd); 1995 return (0); 1996 1997 case FDIOCGETFORMAT: 1998 form_parms = (struct fdformat_parms *)addr; 1999 form_parms->fdformat_version = FDFORMAT_VERSION; 2000 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2001 form_parms->ncyl = fd->sc_type->cylinders; 2002 form_parms->nspt = fd->sc_type->sectrac; 2003 form_parms->ntrk = fd->sc_type->heads; 2004 form_parms->stepspercyl = fd->sc_type->step; 2005 form_parms->gaplen = fd->sc_type->gap2; 2006 form_parms->fillbyte = fd->sc_type->fillbyte; 2007 form_parms->interleave = fd->sc_type->interleave; 2008 switch (fd->sc_type->rate) { 2009 case FDC_500KBPS: 2010 form_parms->xfer_rate = 500 * 1024; 2011 break; 2012 case FDC_300KBPS: 2013 form_parms->xfer_rate = 300 * 1024; 2014 break; 2015 case FDC_250KBPS: 2016 form_parms->xfer_rate = 250 * 1024; 2017 break; 2018 default: 2019 return (EINVAL); 2020 } 2021 return (0); 2022 2023 case FDIOCSETFORMAT: 2024 if ((flag & FWRITE) == 0) 2025 return (EBADF); /* must be opened for writing */ 2026 2027 form_parms = (struct fdformat_parms *)addr; 2028 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2029 return (EINVAL);/* wrong version of formatting prog */ 2030 2031 i = form_parms->nbps >> 7; 2032 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2033 i & ~(1 << (ffs(i)-1))) 2034 /* not a power-of-two multiple of 128 */ 2035 return (EINVAL); 2036 2037 switch (form_parms->xfer_rate) { 2038 case 500 * 1024: 2039 fd->sc_type->rate = FDC_500KBPS; 2040 break; 2041 case 300 * 1024: 2042 fd->sc_type->rate = FDC_300KBPS; 2043 break; 2044 case 250 * 1024: 2045 fd->sc_type->rate = FDC_250KBPS; 2046 break; 2047 default: 2048 return (EINVAL); 2049 } 2050 2051 if (form_parms->nspt > FD_MAX_NSEC || 2052 form_parms->fillbyte > 0xff || 2053 form_parms->interleave > 0xff) 2054 return EINVAL; 2055 fd->sc_type->sectrac = form_parms->nspt; 2056 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2057 return EINVAL; 2058 fd->sc_type->heads = form_parms->ntrk; 2059 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2060 fd->sc_type->secsize = ffs(i)-1; 2061 fd->sc_type->gap2 = form_parms->gaplen; 2062 fd->sc_type->cylinders = form_parms->ncyl; 2063 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2064 form_parms->nbps / DEV_BSIZE; 2065 fd->sc_type->step = form_parms->stepspercyl; 2066 fd->sc_type->fillbyte = form_parms->fillbyte; 2067 fd->sc_type->interleave = form_parms->interleave; 2068 return (0); 2069 2070 case FDIOCFORMAT_TRACK: 2071 if((flag & FWRITE) == 0) 2072 /* must be opened for writing */ 2073 return (EBADF); 2074 form_cmd = (struct fdformat_cmd *)addr; 2075 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2076 /* wrong version of formatting prog */ 2077 return (EINVAL); 2078 2079 if (form_cmd->head >= fd->sc_type->heads || 2080 form_cmd->cylinder >= fd->sc_type->cylinders) { 2081 return (EINVAL); 2082 } 2083 2084 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2085 M_TEMP, M_NOWAIT); 2086 if (fd_formb == 0) 2087 return (ENOMEM); 2088 2089 fd_formb->head = form_cmd->head; 2090 fd_formb->cyl = form_cmd->cylinder; 2091 fd_formb->transfer_rate = fd->sc_type->rate; 2092 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2093 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2094 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2095 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2096 2097 memset(il, 0, sizeof il); 2098 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2099 while (il[(j%fd_formb->fd_formb_nsecs) + 1]) 2100 j++; 2101 il[(j%fd_formb->fd_formb_nsecs) + 1] = i; 2102 j += fd->sc_type->interleave; 2103 } 2104 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2105 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2106 fd_formb->fd_formb_headno(i) = form_cmd->head; 2107 fd_formb->fd_formb_secno(i) = il[i+1]; 2108 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2109 } 2110 2111 error = fdformat(dev, fd_formb, l->l_proc); 2112 free(fd_formb, M_TEMP); 2113 return error; 2114 2115 case FDIOCGETOPTS: /* get drive options */ 2116 *(int *)addr = fd->sc_opts; 2117 return (0); 2118 2119 case FDIOCSETOPTS: /* set drive options */ 2120 fd->sc_opts = *(int *)addr; 2121 return (0); 2122 2123 #ifdef FD_DEBUG 2124 case _IO('f', 100): 2125 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2126 fdcresult(fdc); 2127 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2128 for (i = 0; i < fdc->sc_nstat; i++) 2129 printf(" 0x%x", fdc->sc_status[i]); 2130 printf(">\n"); 2131 return (0); 2132 2133 case _IOW('f', 101, int): 2134 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2135 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2136 fdconf(fdc); 2137 return (0); 2138 2139 case _IO('f', 102): 2140 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2141 fdcresult(fdc); 2142 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2143 for (i=0; i< fdc->sc_nstat; i++) 2144 printf(" 0x%x", fdc->sc_status[i]); 2145 printf(">\n"); 2146 return (0); 2147 #endif 2148 default: 2149 return (ENOTTY); 2150 } 2151 2152 #ifdef DIAGNOSTIC 2153 panic("fdioctl: impossible"); 2154 #endif 2155 } 2156 2157 int 2158 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2159 { 2160 int rv = 0; 2161 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); 2162 struct fd_type *type = fd->sc_type; 2163 struct buf *bp; 2164 2165 /* set up a buffer header for fdstrategy() */ 2166 bp = getiobuf(NULL, false); 2167 if (bp == NULL) 2168 return (ENOBUFS); 2169 2170 bp->b_vp = NULL; 2171 bp->b_cflags = BC_BUSY; 2172 bp->b_flags = B_PHYS | B_FORMAT; 2173 bp->b_proc = p; 2174 bp->b_dev = dev; 2175 2176 /* 2177 * Calculate a fake blkno, so fdstrategy() would initiate a 2178 * seek to the requested cylinder. 2179 */ 2180 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2181 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2182 / DEV_BSIZE; 2183 2184 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2185 bp->b_data = (void *)finfo; 2186 2187 #ifdef FD_DEBUG 2188 if (fdc_debug) { 2189 int i; 2190 2191 printf("fdformat: blkno 0x%llx count %d\n", 2192 (unsigned long long)bp->b_blkno, bp->b_bcount); 2193 2194 printf("\tcyl:\t%d\n", finfo->cyl); 2195 printf("\thead:\t%d\n", finfo->head); 2196 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2197 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2198 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2199 printf("\ttrack data:"); 2200 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2201 printf(" [c%d h%d s%d]", 2202 finfo->fd_formb_cylno(i), 2203 finfo->fd_formb_headno(i), 2204 finfo->fd_formb_secno(i) ); 2205 if (finfo->fd_formb_secsize(i) != 2) 2206 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2207 } 2208 printf("\n"); 2209 } 2210 #endif 2211 2212 /* now do the format */ 2213 fdstrategy(bp); 2214 2215 /* ...and wait for it to complete */ 2216 rv = biowait(bp); 2217 putiobuf(bp); 2218 return (rv); 2219 } 2220 2221 void 2222 fdgetdisklabel(dev_t dev) 2223 { 2224 int unit = FDUNIT(dev), i; 2225 struct fd_softc *fd = device_lookup_private(&fd_cd, unit); 2226 struct disklabel *lp = fd->sc_dk.dk_label; 2227 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2228 2229 memset(lp, 0, sizeof(struct disklabel)); 2230 memset(lp, 0, sizeof(struct cpu_disklabel)); 2231 2232 lp->d_type = DTYPE_FLOPPY; 2233 lp->d_secsize = FD_BSIZE(fd); 2234 lp->d_secpercyl = fd->sc_type->seccyl; 2235 lp->d_nsectors = fd->sc_type->sectrac; 2236 lp->d_ncylinders = fd->sc_type->cylinders; 2237 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2238 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2239 lp->d_rpm = 3600; /* XXX like it matters... */ 2240 2241 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2242 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2243 lp->d_interleave = 1; 2244 2245 lp->d_partitions[RAW_PART].p_offset = 0; 2246 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2247 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2248 lp->d_npartitions = RAW_PART + 1; 2249 2250 lp->d_magic = DISKMAGIC; 2251 lp->d_magic2 = DISKMAGIC; 2252 lp->d_checksum = dkcksum(lp); 2253 2254 /* 2255 * Call the generic disklabel extraction routine. If there's 2256 * not a label there, fake it. 2257 */ 2258 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2259 strncpy(lp->d_packname, "default label", 2260 sizeof(lp->d_packname)); 2261 /* 2262 * Reset the partition info; it might have gotten 2263 * trashed in readdisklabel(). 2264 * 2265 * XXX Why do we have to do this? readdisklabel() 2266 * should be safe... 2267 */ 2268 for (i = 0; i < MAXPARTITIONS; ++i) { 2269 lp->d_partitions[i].p_offset = 0; 2270 if (i == RAW_PART) { 2271 lp->d_partitions[i].p_size = 2272 lp->d_secpercyl * lp->d_ncylinders; 2273 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2274 } else { 2275 lp->d_partitions[i].p_size = 0; 2276 lp->d_partitions[i].p_fstype = FS_UNUSED; 2277 } 2278 } 2279 lp->d_npartitions = RAW_PART + 1; 2280 } 2281 } 2282 2283 void 2284 fd_do_eject(struct fd_softc *fd) 2285 { 2286 struct fdc_softc *fdc = device_private(device_parent(fd->sc_dv)); 2287 2288 if (CPU_ISSUN4C) { 2289 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2290 delay(10); 2291 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2292 return; 2293 } 2294 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2295 bus_space_tag_t t = fdc->sc_bustag; 2296 bus_space_handle_t h = fdc->sc_handle; 2297 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2298 2299 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2300 delay(10); 2301 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2302 return; 2303 } 2304 } 2305 2306 /* ARGSUSED */ 2307 void 2308 fd_mountroot_hook(device_t dev) 2309 { 2310 int c; 2311 2312 fd_do_eject(device_private(dev)); 2313 printf("Insert filesystem floppy and press return."); 2314 for (;;) { 2315 c = cngetc(); 2316 if ((c == '\r') || (c == '\n')) { 2317 printf("\n"); 2318 break; 2319 } 2320 } 2321 } 2322 2323 #ifdef MEMORY_DISK_HOOKS 2324 2325 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2326 2327 int 2328 fd_read_md_image(size_t *sizep, void * *addrp) 2329 { 2330 struct buf buf, *bp = &buf; 2331 dev_t dev; 2332 off_t offset; 2333 void *addr; 2334 2335 dev = makedev(54,0); /* XXX */ 2336 2337 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2338 *addrp = addr; 2339 2340 if (fdopen(dev, 0, S_IFCHR, NULL)) 2341 panic("fd: mountroot: fdopen"); 2342 2343 offset = 0; 2344 2345 for (;;) { 2346 bp->b_dev = dev; 2347 bp->b_error = 0; 2348 bp->b_resid = 0; 2349 bp->b_proc = NULL; 2350 bp->b_cflags |= BC_BUSY; 2351 bp->b_flags = B_PHYS | B_RAW | B_READ; 2352 bp->b_blkno = btodb(offset); 2353 bp->b_bcount = DEV_BSIZE; 2354 bp->b_data = addr; 2355 fdstrategy(bp); 2356 biowait(bp); 2357 if (bp->b_error) 2358 panic("fd: mountroot: fdread error %d", bp->b_error); 2359 2360 if (bp->b_resid != 0) 2361 break; 2362 2363 addr = (char *)addr + DEV_BSIZE; 2364 offset += DEV_BSIZE; 2365 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2366 break; 2367 } 2368 (void)fdclose(dev, 0, S_IFCHR, NULL); 2369 *sizep = offset; 2370 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev))); 2371 return (0); 2372 } 2373 #endif /* MEMORY_DISK_HOOKS */ 2374
Indexes created Fri Oct 03 02:09:57 GMT 2025