fdc.c revision 1.1
1 /* $NetBSD: fdc.c,v 1.1 2006/10/06 08:44:59 jnemeth 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 /*- 74 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 75 * 76 * This code is derived from software contributed to Berkeley by 77 * Don Ahn. 78 * 79 * Redistribution and use in source and binary forms, with or without 80 * modification, are permitted provided that the following conditions 81 * are met: 82 * 1. Redistributions of source code must retain the above copyright 83 * notice, this list of conditions and the following disclaimer. 84 * 2. Redistributions in binary form must reproduce the above copyright 85 * notice, this list of conditions and the following disclaimer in the 86 * documentation and/or other materials provided with the distribution. 87 * 3. All advertising materials mentioning features or use of this software 88 * must display the following acknowledgement: 89 * This product includes software developed by the University of 90 * California, Berkeley and its contributors. 91 * 4. Neither the name of the University nor the names of its contributors 92 * may be used to endorse or promote products derived from this software 93 * without specific prior written permission. 94 * 95 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 96 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 97 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 98 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 99 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 100 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 101 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 103 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 104 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 105 * SUCH DAMAGE. 106 * 107 * @(#)fd.c 7.4 (Berkeley) 5/25/91 108 */ 109 110 #include <sys/cdefs.h> 111 __KERNEL_RCSID(0, "$NetBSD: fdc.c,v 1.1 2006/10/06 08:44:59 jnemeth Exp $"); 112 113 #include "opt_ddb.h" 114 #include "opt_md.h" 115 116 #include <sys/param.h> 117 #include <sys/systm.h> 118 #include <sys/callout.h> 119 #include <sys/kernel.h> 120 #include <sys/file.h> 121 #include <sys/ioctl.h> 122 #include <sys/device.h> 123 #include <sys/disklabel.h> 124 #include <sys/disk.h> 125 #include <sys/fdio.h> 126 #include <sys/buf.h> 127 #include <sys/bufq.h> 128 #include <sys/malloc.h> 129 #include <sys/proc.h> 130 #include <sys/uio.h> 131 #include <sys/stat.h> 132 #include <sys/syslog.h> 133 #include <sys/queue.h> 134 #include <sys/conf.h> 135 136 #include <dev/cons.h> 137 138 #include <uvm/uvm_extern.h> 139 140 #include <machine/autoconf.h> 141 #include <machine/intr.h> 142 143 #include <dev/ebus/ebusreg.h> 144 #include <dev/ebus/ebusvar.h> 145 /* #include <sparc/sparc/auxreg.h> */ 146 #include <sparc64/dev/auxioreg.h> 147 #include <sparc64/dev/auxiovar.h> 148 #include <sparc64/dev/fdcreg.h> 149 #include <sparc64/dev/fdcvar.h> 150 151 #define FDUNIT(dev) (minor(dev) / 8) 152 #define FDTYPE(dev) (minor(dev) % 8) 153 154 #ifdef SUN4U 155 #define FTC_FLIP \ 156 do { \ 157 auxio_fd_control(AUXIO_LED_FTC); \ 158 auxio_fd_control(0); \ 159 } while (0) 160 #else 161 #define FTC_FLIP 162 #endif 163 164 /* XXX misuse a flag to identify format operation */ 165 #define B_FORMAT B_XXX 166 167 #define FD_DEBUG 168 #ifdef FD_DEBUG 169 int fdc_debug = 0; 170 #endif 171 172 enum fdc_state { 173 DEVIDLE = 0, 174 MOTORWAIT, /* 1 */ 175 DOSEEK, /* 2 */ 176 SEEKWAIT, /* 3 */ 177 SEEKTIMEDOUT, /* 4 */ 178 SEEKCOMPLETE, /* 5 */ 179 DOIO, /* 6 */ 180 IOCOMPLETE, /* 7 */ 181 IOTIMEDOUT, /* 8 */ 182 IOCLEANUPWAIT, /* 9 */ 183 IOCLEANUPTIMEDOUT,/*10 */ 184 DORESET, /* 11 */ 185 RESETCOMPLETE, /* 12 */ 186 RESETTIMEDOUT, /* 13 */ 187 DORECAL, /* 14 */ 188 RECALWAIT, /* 15 */ 189 RECALTIMEDOUT, /* 16 */ 190 RECALCOMPLETE, /* 17 */ 191 DODSKCHG, /* 18 */ 192 DSKCHGWAIT, /* 19 */ 193 DSKCHGTIMEDOUT, /* 20 */ 194 }; 195 196 /* software state, per controller */ 197 struct fdc_softc { 198 struct device sc_dev; /* boilerplate */ 199 bus_space_tag_t sc_bustag; 200 201 struct callout sc_timo_ch; /* timeout callout */ 202 struct callout sc_intr_ch; /* pseudo-intr callout */ 203 204 struct fd_softc *sc_fd[4]; /* pointers to children */ 205 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 206 enum fdc_state sc_state; 207 int sc_flags; 208 #define FDC_82077 0x01 209 #define FDC_NEEDHEADSETTLE 0x02 210 #define FDC_EIS 0x04 211 #define FDC_NEEDMOTORWAIT 0x08 212 #define FDC_NOEJECT 0x10 213 #define FDC_EBUS 0x20 214 int sc_errors; /* number of retries so far */ 215 int sc_overruns; /* number of DMA overruns */ 216 int sc_cfg; /* current configuration */ 217 struct fdcio sc_io; 218 #define sc_handle sc_io.fdcio_handle 219 #define sc_reg_msr sc_io.fdcio_reg_msr 220 #define sc_reg_fifo sc_io.fdcio_reg_fifo 221 #define sc_reg_dor sc_io.fdcio_reg_dor 222 #define sc_reg_dir sc_io.fdcio_reg_dir 223 #define sc_reg_drs sc_io.fdcio_reg_msr 224 #define sc_itask sc_io.fdcio_itask 225 #define sc_istatus sc_io.fdcio_istatus 226 #define sc_data sc_io.fdcio_data 227 #define sc_tc sc_io.fdcio_tc 228 #define sc_nstat sc_io.fdcio_nstat 229 #define sc_status sc_io.fdcio_status 230 #define sc_intrcnt sc_io.fdcio_intrcnt 231 232 void *sc_sicookie; /* softintr(9) cookie */ 233 }; 234 235 #ifndef SUN4U 236 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */ 237 #endif 238 239 /* controller driver configuration */ 240 int fdcmatch_sbus(struct device *, struct cfdata *, void *); 241 int fdcmatch_ebus(struct device *, struct cfdata *, void *); 242 void fdcattach_sbus(struct device *, struct device *, void *); 243 void fdcattach_ebus(struct device *, struct device *, void *); 244 245 int fdcattach(struct fdc_softc *, int); 246 247 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc), 248 fdcmatch_sbus, fdcattach_sbus, NULL, NULL); 249 250 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc), 251 fdcmatch_ebus, fdcattach_ebus, NULL, NULL); 252 253 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); 254 255 /* 256 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 257 * we tell them apart. 258 */ 259 struct fd_type { 260 int sectrac; /* sectors per track */ 261 int heads; /* number of heads */ 262 int seccyl; /* sectors per cylinder */ 263 int secsize; /* size code for sectors */ 264 int datalen; /* data len when secsize = 0 */ 265 int steprate; /* step rate and head unload time */ 266 int gap1; /* gap len between sectors */ 267 int gap2; /* formatting gap */ 268 int cylinders; /* total num of cylinders */ 269 int size; /* size of disk in sectors */ 270 int step; /* steps per cylinder */ 271 int rate; /* transfer speed code */ 272 int fillbyte; /* format fill byte */ 273 int interleave; /* interleave factor (formatting) */ 274 const char *name; 275 }; 276 277 /* The order of entries in the following table is important -- BEWARE! */ 278 struct fd_type fd_types[] = { 279 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 280 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 281 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 282 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 283 }; 284 285 /* software state, per disk (with up to 4 disks per ctlr) */ 286 struct fd_softc { 287 struct device sc_dv; /* generic device info */ 288 struct disk sc_dk; /* generic disk info */ 289 290 struct fd_type *sc_deftype; /* default type descriptor */ 291 struct fd_type *sc_type; /* current type descriptor */ 292 293 struct callout sc_motoron_ch; 294 struct callout sc_motoroff_ch; 295 296 daddr_t sc_blkno; /* starting block number */ 297 int sc_bcount; /* byte count left */ 298 int sc_skip; /* bytes already transferred */ 299 int sc_nblks; /* number of blocks currently transferring */ 300 int sc_nbytes; /* number of bytes currently transferring */ 301 302 int sc_drive; /* physical unit number */ 303 int sc_flags; 304 #define FD_OPEN 0x01 /* it's open */ 305 #define FD_MOTOR 0x02 /* motor should be on */ 306 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 307 int sc_cylin; /* where we think the head is */ 308 int sc_opts; /* user-set options */ 309 310 void *sc_sdhook; /* shutdownhook cookie */ 311 312 TAILQ_ENTRY(fd_softc) sc_drivechain; 313 int sc_ops; /* I/O ops since last switch */ 314 struct bufq_state *sc_q;/* pending I/O requests */ 315 int sc_active; /* number of active I/O requests */ 316 }; 317 318 /* floppy driver configuration */ 319 int fdmatch(struct device *, struct cfdata *, void *); 320 void fdattach(struct device *, struct device *, void *); 321 322 CFATTACH_DECL(fd, sizeof(struct fd_softc), 323 fdmatch, fdattach, NULL, NULL); 324 325 extern struct cfdriver fd_cd; 326 327 dev_type_open(fdopen); 328 dev_type_close(fdclose); 329 dev_type_read(fdread); 330 dev_type_write(fdwrite); 331 dev_type_ioctl(fdioctl); 332 dev_type_strategy(fdstrategy); 333 334 const struct bdevsw fd_bdevsw = { 335 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK 336 }; 337 338 const struct cdevsw fd_cdevsw = { 339 fdopen, fdclose, fdread, fdwrite, fdioctl, 340 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 341 }; 342 343 void fdgetdisklabel(dev_t); 344 int fd_get_parms(struct fd_softc *); 345 void fdstrategy(struct buf *); 346 void fdstart(struct fd_softc *); 347 int fdprint(void *, const char *); 348 349 struct dkdriver fddkdriver = { fdstrategy, NULL }; 350 351 struct fd_type *fd_nvtotype(char *, int, int); 352 void fd_set_motor(struct fdc_softc *); 353 void fd_motor_off(void *); 354 void fd_motor_on(void *); 355 int fdcresult(struct fdc_softc *); 356 int fdc_wrfifo(struct fdc_softc *, uint8_t); 357 void fdcstart(struct fdc_softc *); 358 void fdcstatus(struct fdc_softc *, const char *); 359 void fdc_reset(struct fdc_softc *); 360 int fdc_diskchange(struct fdc_softc *); 361 void fdctimeout(void *); 362 void fdcpseudointr(void *); 363 int fdc_c_hwintr(void *); 364 void fdchwintr(void); 365 void fdcswintr(void *); 366 int fdcstate(struct fdc_softc *); 367 void fdcretry(struct fdc_softc *); 368 void fdfinish(struct fd_softc *, struct buf *); 369 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); 370 void fd_do_eject(struct fd_softc *); 371 void fd_mountroot_hook(struct device *); 372 static int fdconf(struct fdc_softc *); 373 static void establish_chip_type( 374 struct fdc_softc *, 375 bus_space_tag_t, 376 bus_addr_t, 377 bus_size_t, 378 bus_space_handle_t); 379 380 #ifdef MEMORY_DISK_HOOKS 381 int fd_read_md_image(size_t *, caddr_t *); 382 #endif 383 384 int 385 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux) 386 { 387 struct sbus_attach_args *sa = aux; 388 389 return strcmp("SUNW,fdtwo", sa->sa_name) == 0; 390 } 391 392 int 393 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux) 394 { 395 struct ebus_attach_args *ea = aux; 396 397 return strcmp("fdthree", ea->ea_name) == 0; 398 } 399 400 static void 401 establish_chip_type(struct fdc_softc *fdc, 402 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size, 403 bus_space_handle_t handle) 404 { 405 uint8_t v; 406 407 /* 408 * This hack from Chris Torek: apparently DOR really 409 * addresses MSR/DRS on a 82072. 410 * We used to rely on the VERSION command to tell the 411 * difference (which did not work). 412 */ 413 414 /* First, check the size of the register bank */ 415 if (size < 8) 416 /* It isn't a 82077 */ 417 return; 418 419 #ifndef SUN4U 420 /* Then probe the DOR register offset */ 421 if (bus_space_probe(tag, addr, 422 1, /* probe size */ 423 FDREG77_DOR, /* offset */ 424 0, /* flags */ 425 NULL, NULL) == 0) { 426 427 /* It isn't a 82077 */ 428 return; 429 } 430 #endif 431 432 v = bus_space_read_1(tag, handle, FDREG77_DOR); 433 if (v == NE7_RQM) { 434 /* 435 * Value in DOR looks like it's really MSR 436 */ 437 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 438 v = bus_space_read_1(tag, handle, FDREG77_DOR); 439 if (v == NE7_RQM) { 440 /* 441 * The value in the DOR didn't stick; 442 * it isn't a 82077 443 */ 444 return; 445 } 446 } 447 448 fdc->sc_flags |= FDC_82077; 449 } 450 451 /* 452 * Arguments passed between fdcattach and fdprobe. 453 */ 454 struct fdc_attach_args { 455 int fa_drive; 456 struct fd_type *fa_deftype; 457 }; 458 459 /* 460 * Print the location of a disk drive (called just before attaching the 461 * the drive). If `fdc' is not NULL, the drive was found but was not 462 * in the system config file; print the drive name as well. 463 * Return QUIET (config_find ignores this if the device was configured) to 464 * avoid printing `fdN not configured' messages. 465 */ 466 int 467 fdprint(void *aux, const char *fdc) 468 { 469 register struct fdc_attach_args *fa = aux; 470 471 if (!fdc) 472 aprint_normal(" drive %d", fa->fa_drive); 473 return QUIET; 474 } 475 476 /* 477 * Configure several parameters and features on the FDC. 478 * Return 0 on success. 479 */ 480 static int 481 fdconf(struct fdc_softc *fdc) 482 { 483 int vroom; 484 485 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 486 return -1; 487 488 /* 489 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 490 * the PROM thinks is appropriate. 491 */ 492 if ((vroom = fdc->sc_status[7]) == 0) 493 vroom = 0x64; 494 495 /* Configure controller to use FIFO and Implied Seek */ 496 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 497 return -1; 498 if (fdc_wrfifo(fdc, vroom) != 0) 499 return -1; 500 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 501 return -1; 502 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 503 return -1; 504 /* No result phase for the NE7CMD_CFG command */ 505 506 if ((fdc->sc_flags & FDC_82077) != 0) { 507 /* Lock configuration across soft resets. */ 508 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 509 fdcresult(fdc) != 1) { 510 #ifdef DEBUG 511 printf("fdconf: CFGLOCK failed"); 512 #endif 513 return -1; 514 } 515 } 516 517 return 0; 518 #if 0 519 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 520 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 521 if (fdc_debug) 522 printf("[version cmd]"); 523 } 524 #endif 525 } 526 527 void 528 fdcattach_sbus(struct device *parent, struct device *self, void *aux) 529 { 530 struct fdc_softc *fdc = (void *)self; 531 struct sbus_attach_args *sa = aux; 532 533 if (sa->sa_nintr == 0) { 534 printf(": no interrupt line configured\n"); 535 return; 536 } 537 538 if (auxio_fd_control(0) != 0) { 539 printf(": can't attach before auxio\n"); 540 return; 541 } 542 543 fdc->sc_bustag = sa->sa_bustag; 544 545 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset), 546 sa->sa_size, 0, &fdc->sc_handle) != 0) { 547 printf(": cannot map control registers\n"); 548 return; 549 } 550 551 establish_chip_type(fdc, 552 sa->sa_bustag, 553 BUS_ADDR(sa->sa_slot, sa->sa_offset), 554 sa->sa_size, 555 fdc->sc_handle); 556 557 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) { 558 printf(": no drives attached\n"); 559 return; 560 } 561 562 if (prom_getproplen(sa->sa_node, "manual") >= 0) 563 fdc->sc_flags |= FDC_NOEJECT; 564 565 566 if (fdcattach(fdc, sa->sa_pri) != 0) 567 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size); 568 } 569 570 void 571 fdcattach_ebus(struct device *parent, struct device *self, void *aux) 572 { 573 struct fdc_softc *fdc = (void *)self; 574 struct ebus_attach_args *ea = aux; 575 int map_vaddr; 576 577 if (ea->ea_nintr == 0) { 578 printf(": no interrupt line configured\n"); 579 return; 580 } 581 582 if (ea->ea_nreg < 3) { 583 printf(": expected 3 registers, only got %d\n", 584 ea->ea_nreg); 585 return; 586 } 587 588 fdc->sc_bustag = ea->ea_bustag; 589 590 if (ea->ea_nvaddr > 0) { 591 sparc_promaddr_to_handle(ea->ea_bustag, 592 ea->ea_vaddr[0], &fdc->sc_handle); 593 map_vaddr = 1; 594 } else if (bus_space_map(fdc->sc_bustag, 595 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 596 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) { 597 map_vaddr = 0; 598 } else { 599 printf(": can't map control registers\n"); 600 return; 601 } 602 603 establish_chip_type(fdc, 604 fdc->sc_bustag, 605 map_vaddr ? ea->ea_vaddr[0] : 606 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 607 ea->ea_reg[0].size, 608 fdc->sc_handle); 609 610 fdc->sc_flags |= FDC_EBUS; 611 612 if (prom_getproplen(ea->ea_node, "manual") >= 0) 613 fdc->sc_flags |= FDC_NOEJECT; 614 615 /* XXX unmapping if it fails */ 616 fdcattach(fdc, ea->ea_intr[0]); 617 } 618 619 int 620 fdcattach(struct fdc_softc *fdc, int pri) 621 { 622 struct fdc_attach_args fa; 623 int drive_attached; 624 char code; 625 626 callout_init(&fdc->sc_timo_ch); 627 callout_init(&fdc->sc_intr_ch); 628 629 fdc->sc_state = DEVIDLE; 630 fdc->sc_itask = FDC_ITASK_NONE; 631 fdc->sc_istatus = FDC_ISTATUS_NONE; 632 fdc->sc_flags |= FDC_EIS; 633 TAILQ_INIT(&fdc->sc_drives); 634 635 if ((fdc->sc_flags & FDC_82077) != 0) { 636 fdc->sc_reg_msr = FDREG77_MSR; 637 fdc->sc_reg_fifo = FDREG77_FIFO; 638 fdc->sc_reg_dor = FDREG77_DOR; 639 fdc->sc_reg_dir = FDREG77_DIR; 640 code = '7'; 641 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 642 } else { 643 fdc->sc_reg_msr = FDREG72_MSR; 644 fdc->sc_reg_fifo = FDREG72_FIFO; 645 fdc->sc_reg_dor = 0; 646 code = '2'; 647 } 648 649 /* 650 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 651 * Note: CFG_EFIFO is active-low, initial threshold value: 8 652 */ 653 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 654 if (fdconf(fdc) != 0) { 655 printf(": no drives attached\n"); 656 return -1; 657 } 658 659 #ifndef SUN4U 660 fdciop = &fdc->sc_io; 661 #endif 662 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO, 663 fdc_c_hwintr, fdc) == NULL) { 664 printf("\n%s: cannot register interrupt handler\n", 665 fdc->sc_dev.dv_xname); 666 return -1; 667 } 668 669 fdc->sc_sicookie = softintr_establish(IPL_FDSOFT, fdcswintr, fdc); 670 if (fdc->sc_sicookie == NULL) { 671 printf("\n%s: cannot register soft interrupt handler\n", 672 fdc->sc_dev.dv_xname); 673 return -1; 674 } 675 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code); 676 if (fdc->sc_flags & FDC_NOEJECT) 677 printf(": manual eject"); 678 printf("\n"); 679 680 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 681 fdc->sc_dev.dv_xname, "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(struct device *parent, struct cfdata *match, void *aux) 702 { 703 struct fdc_softc *fdc = (void *)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 #ifndef SUN4U 721 } else { 722 auxregbisc(AUXIO4C_FDS, 0); 723 #endif 724 } 725 fdc->sc_nstat = 0; 726 fdc_wrfifo(fdc, NE7CMD_RECAL); 727 fdc_wrfifo(fdc, drive); 728 729 /* Wait for recalibration to complete */ 730 for (n = 0; n < 10000; n++) { 731 uint8_t v; 732 733 delay(1000); 734 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 735 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 736 /* wait a bit longer till device *really* is ready */ 737 delay(100000); 738 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 739 break; 740 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 741 /* 742 * Got `invalid command'; we interpret it 743 * to mean that the re-calibrate hasn't in 744 * fact finished yet 745 */ 746 continue; 747 break; 748 } 749 } 750 n = fdc->sc_nstat; 751 #ifdef FD_DEBUG 752 if (fdc_debug) { 753 int i; 754 printf("fdprobe: %d stati:", n); 755 for (i = 0; i < n; i++) 756 printf(" 0x%x", fdc->sc_status[i]); 757 printf("\n"); 758 } 759 #endif 760 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 761 762 /* turn off motor */ 763 if ((fdc->sc_flags & FDC_82077) != 0) { 764 /* deselect drive and turn motor off */ 765 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 766 #ifndef SUN4U 767 } else { 768 auxregbisc(0, AUXIO4C_FDS); 769 #endif 770 } 771 772 return ok; 773 } 774 775 /* 776 * Controller is working, and drive responded. Attach it. 777 */ 778 void 779 fdattach(struct device *parent, struct device *self, void *aux) 780 { 781 struct fdc_softc *fdc = (void *)parent; 782 struct fd_softc *fd = (void *)self; 783 struct fdc_attach_args *fa = aux; 784 struct fd_type *type = fa->fa_deftype; 785 int drive = fa->fa_drive; 786 787 callout_init(&fd->sc_motoron_ch); 788 callout_init(&fd->sc_motoroff_ch); 789 790 /* XXX Allow `flags' to override device type? */ 791 792 if (type) 793 printf(": %s %d cyl, %d head, %d sec\n", type->name, 794 type->cylinders, type->heads, type->sectrac); 795 else 796 printf(": density unknown\n"); 797 798 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); 799 fd->sc_cylin = -1; 800 fd->sc_drive = drive; 801 fd->sc_deftype = type; 802 fdc->sc_fd[drive] = fd; 803 804 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 805 fdc_wrfifo(fdc, type->steprate); 806 /* XXX head load time == 6ms */ 807 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 808 809 /* 810 * Initialize and attach the disk structure. 811 */ 812 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 813 fd->sc_dk.dk_driver = &fddkdriver; 814 disk_attach(&fd->sc_dk); 815 816 /* 817 * Establish a mountroot_hook anyway in case we booted 818 * with RB_ASKNAME and get selected as the boot device. 819 */ 820 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 821 822 /* Make sure the drive motor gets turned off at shutdown time. */ 823 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 824 } 825 826 inline struct fd_type * 827 fd_dev_to_type(struct fd_softc *fd, dev_t dev) 828 { 829 int type = FDTYPE(dev); 830 831 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 832 return NULL; 833 return type ? &fd_types[type - 1] : fd->sc_deftype; 834 } 835 836 void 837 fdstrategy(struct buf *bp) 838 { 839 struct fd_softc *fd; 840 int unit = FDUNIT(bp->b_dev); 841 int sz; 842 int s; 843 844 /* Valid unit, controller, and request? */ 845 if (unit >= fd_cd.cd_ndevs || 846 (fd = fd_cd.cd_devs[unit]) == 0 || 847 bp->b_blkno < 0 || 848 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 849 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 850 (bp->b_flags & B_FORMAT) == 0)) { 851 bp->b_error = EINVAL; 852 goto bad; 853 } 854 855 /* If it's a null transfer, return immediately. */ 856 if (bp->b_bcount == 0) 857 goto done; 858 859 sz = howmany(bp->b_bcount, DEV_BSIZE); 860 861 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 862 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 863 - bp->b_blkno; 864 if (sz == 0) { 865 /* If exactly at end of disk, return EOF. */ 866 bp->b_resid = bp->b_bcount; 867 goto done; 868 } 869 if (sz < 0) { 870 /* If past end of disk, return EINVAL. */ 871 bp->b_error = EINVAL; 872 goto bad; 873 } 874 /* Otherwise, truncate request. */ 875 bp->b_bcount = sz << DEV_BSHIFT; 876 } 877 878 bp->b_rawblkno = bp->b_blkno; 879 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 880 (FD_BSIZE(fd) * fd->sc_type->seccyl); 881 882 #ifdef FD_DEBUG 883 if (fdc_debug > 1) 884 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d\n", 885 (long long)bp->b_blkno, bp->b_bcount, 886 (long long)fd->sc_blkno, bp->b_cylinder); 887 #endif 888 889 /* Queue transfer on drive, activate drive and controller if idle. */ 890 s = splbio(); 891 BUFQ_PUT(fd->sc_q, bp); 892 callout_stop(&fd->sc_motoroff_ch); /* a good idea */ 893 if (fd->sc_active == 0) 894 fdstart(fd); 895 #ifdef DIAGNOSTIC 896 else { 897 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 898 if (fdc->sc_state == DEVIDLE) { 899 printf("fdstrategy: controller inactive\n"); 900 fdcstart(fdc); 901 } 902 } 903 #endif 904 splx(s); 905 return; 906 907 bad: 908 bp->b_flags |= B_ERROR; 909 done: 910 /* Toss transfer; we're done early. */ 911 biodone(bp); 912 } 913 914 void 915 fdstart(struct fd_softc *fd) 916 { 917 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 918 int active = fdc->sc_drives.tqh_first != 0; 919 920 /* Link into controller queue. */ 921 fd->sc_active = 1; 922 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 923 924 /* If controller not already active, start it. */ 925 if (!active) 926 fdcstart(fdc); 927 } 928 929 void 930 fdfinish(struct fd_softc *fd, struct buf *bp) 931 { 932 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 933 934 /* 935 * Move this drive to the end of the queue to give others a `fair' 936 * chance. We only force a switch if N operations are completed while 937 * another drive is waiting to be serviced, since there is a long motor 938 * startup delay whenever we switch. 939 */ 940 (void)BUFQ_GET(fd->sc_q); 941 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 942 fd->sc_ops = 0; 943 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 944 if (BUFQ_PEEK(fd->sc_q) != NULL) { 945 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 946 } else 947 fd->sc_active = 0; 948 } 949 bp->b_resid = fd->sc_bcount; 950 fd->sc_skip = 0; 951 952 biodone(bp); 953 /* turn off motor 5s from now */ 954 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); 955 fdc->sc_state = DEVIDLE; 956 } 957 958 void 959 fdc_reset(struct fdc_softc *fdc) 960 { 961 bus_space_tag_t t = fdc->sc_bustag; 962 bus_space_handle_t h = fdc->sc_handle; 963 964 if ((fdc->sc_flags & FDC_82077) != 0) { 965 bus_space_write_1(t, h, fdc->sc_reg_dor, 966 FDO_FDMAEN | FDO_MOEN(0)); 967 } 968 969 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 970 delay(10); 971 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 972 973 if ((fdc->sc_flags & FDC_82077) != 0) { 974 bus_space_write_1(t, h, fdc->sc_reg_dor, 975 FDO_FRST | FDO_FDMAEN | FDO_DS); 976 } 977 #ifdef FD_DEBUG 978 if (fdc_debug) 979 printf("fdc reset\n"); 980 #endif 981 } 982 983 void 984 fd_set_motor(struct fdc_softc *fdc) 985 { 986 struct fd_softc *fd; 987 u_char status; 988 int n; 989 990 if ((fdc->sc_flags & FDC_82077) != 0) { 991 status = FDO_FRST | FDO_FDMAEN; 992 if ((fd = fdc->sc_drives.tqh_first) != NULL) 993 status |= fd->sc_drive; 994 995 for (n = 0; n < 4; n++) 996 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 997 status |= FDO_MOEN(n); 998 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 999 fdc->sc_reg_dor, status); 1000 #ifndef SUN4U 1001 } else { 1002 1003 for (n = 0; n < 4; n++) { 1004 if ((fd = fdc->sc_fd[n]) != NULL && 1005 (fd->sc_flags & FD_MOTOR) != 0) { 1006 auxregbisc(AUXIO4C_FDS, 0); 1007 return; 1008 } 1009 } 1010 auxregbisc(0, AUXIO4C_FDS); 1011 #endif 1012 } 1013 } 1014 1015 void 1016 fd_motor_off(void *arg) 1017 { 1018 struct fd_softc *fd = arg; 1019 int s; 1020 1021 s = splbio(); 1022 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1023 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv)); 1024 splx(s); 1025 } 1026 1027 void 1028 fd_motor_on(void *arg) 1029 { 1030 struct fd_softc *fd = arg; 1031 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 1032 int s; 1033 1034 s = splbio(); 1035 fd->sc_flags &= ~FD_MOTOR_WAIT; 1036 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 1037 (void) fdcstate(fdc); 1038 splx(s); 1039 } 1040 1041 /* 1042 * Get status bytes off the FDC after a command has finished 1043 * Returns the number of status bytes read; -1 on error. 1044 * The return value is also stored in `sc_nstat'. 1045 */ 1046 int 1047 fdcresult(struct fdc_softc *fdc) 1048 { 1049 bus_space_tag_t t = fdc->sc_bustag; 1050 bus_space_handle_t h = fdc->sc_handle; 1051 int j, n = 0; 1052 1053 for (j = 10000; j; j--) { 1054 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1055 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1056 if (v == NE7_RQM) 1057 return fdc->sc_nstat = n; 1058 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1059 if (n >= sizeof(fdc->sc_status)) { 1060 log(LOG_ERR, "fdcresult: overrun\n"); 1061 return -1; 1062 } 1063 fdc->sc_status[n++] = 1064 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1065 } else 1066 delay(1); 1067 } 1068 1069 log(LOG_ERR, "fdcresult: timeout\n"); 1070 return fdc->sc_nstat = -1; 1071 } 1072 1073 /* 1074 * Write a command byte to the FDC. 1075 * Returns 0 on success; -1 on failure (i.e. timeout) 1076 */ 1077 int 1078 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x) 1079 { 1080 bus_space_tag_t t = fdc->sc_bustag; 1081 bus_space_handle_t h = fdc->sc_handle; 1082 int i; 1083 1084 for (i = 100000; i-- > 0;) { 1085 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1086 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1087 /* The chip is ready */ 1088 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1089 return 0; 1090 } 1091 delay(1); 1092 } 1093 return -1; 1094 } 1095 1096 int 1097 fdc_diskchange(struct fdc_softc *fdc) 1098 { 1099 1100 #ifndef SUN4U 1101 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 1102 #endif 1103 bus_space_tag_t t = fdc->sc_bustag; 1104 bus_space_handle_t h = fdc->sc_handle; 1105 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir); 1106 return (v & FDI_DCHG) != 0; 1107 #ifndef SUN4U 1108 } else if (CPU_ISSUN4C) { 1109 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0; 1110 } 1111 return 0; 1112 #endif 1113 } 1114 1115 int 1116 fdopen(dev_t dev, int flags, int fmt, struct lwp *l) 1117 { 1118 int unit, pmask; 1119 struct fd_softc *fd; 1120 struct fd_type *type; 1121 1122 unit = FDUNIT(dev); 1123 if (unit >= fd_cd.cd_ndevs) 1124 return ENXIO; 1125 fd = fd_cd.cd_devs[unit]; 1126 if (fd == NULL) 1127 return ENXIO; 1128 type = fd_dev_to_type(fd, dev); 1129 if (type == NULL) 1130 return ENXIO; 1131 1132 if ((fd->sc_flags & FD_OPEN) != 0 && 1133 fd->sc_type != type) 1134 return EBUSY; 1135 1136 fd->sc_type = type; 1137 fd->sc_cylin = -1; 1138 fd->sc_flags |= FD_OPEN; 1139 1140 /* 1141 * Only update the disklabel if we're not open anywhere else. 1142 */ 1143 if (fd->sc_dk.dk_openmask == 0) 1144 fdgetdisklabel(dev); 1145 1146 pmask = (1 << DISKPART(dev)); 1147 1148 switch (fmt) { 1149 case S_IFCHR: 1150 fd->sc_dk.dk_copenmask |= pmask; 1151 break; 1152 1153 case S_IFBLK: 1154 fd->sc_dk.dk_bopenmask |= pmask; 1155 break; 1156 } 1157 fd->sc_dk.dk_openmask = 1158 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1159 1160 return 0; 1161 } 1162 1163 int 1164 fdclose(dev_t dev, int flags, int fmt, struct lwp *l) 1165 { 1166 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1167 int pmask = (1 << DISKPART(dev)); 1168 1169 fd->sc_flags &= ~FD_OPEN; 1170 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1171 1172 switch (fmt) { 1173 case S_IFCHR: 1174 fd->sc_dk.dk_copenmask &= ~pmask; 1175 break; 1176 1177 case S_IFBLK: 1178 fd->sc_dk.dk_bopenmask &= ~pmask; 1179 break; 1180 } 1181 fd->sc_dk.dk_openmask = 1182 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1183 1184 return 0; 1185 } 1186 1187 int 1188 fdread(dev_t dev, struct uio *uio, int flag) 1189 { 1190 1191 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); 1192 } 1193 1194 int 1195 fdwrite(dev_t dev, struct uio *uio, int flag) 1196 { 1197 1198 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); 1199 } 1200 1201 void 1202 fdcstart(struct fdc_softc *fdc) 1203 { 1204 1205 #ifdef DIAGNOSTIC 1206 /* only got here if controller's drive queue was inactive; should 1207 be in idle state */ 1208 if (fdc->sc_state != DEVIDLE) { 1209 printf("fdcstart: not idle\n"); 1210 return; 1211 } 1212 #endif 1213 (void)fdcstate(fdc); 1214 } 1215 1216 void 1217 fdcstatus(struct fdc_softc *fdc, const char *s) 1218 { 1219 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1220 int n; 1221 char bits[64]; 1222 1223 /* Just print last status */ 1224 n = fdc->sc_nstat; 1225 1226 #if 0 1227 /* 1228 * A 82072 seems to return <invalid command> on 1229 * gratuitous Sense Interrupt commands. 1230 */ 1231 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1232 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1233 (void)fdcresult(fdc); 1234 n = 2; 1235 } 1236 #endif 1237 1238 printf("%s: %s: state %d", 1239 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1240 1241 switch (n) { 1242 case 0: 1243 printf("\n"); 1244 break; 1245 case 2: 1246 printf(" (st0 %s cyl %d)\n", 1247 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1248 bits, sizeof(bits)), fdc->sc_status[1]); 1249 break; 1250 case 7: 1251 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1252 NE7_ST0BITS, bits, sizeof(bits))); 1253 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1254 NE7_ST1BITS, bits, sizeof(bits))); 1255 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1256 NE7_ST2BITS, bits, sizeof(bits))); 1257 printf(" cyl %d head %d sec %d)\n", 1258 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1259 break; 1260 #ifdef DIAGNOSTIC 1261 default: 1262 printf(" fdcstatus: weird size: %d\n", n); 1263 break; 1264 #endif 1265 } 1266 } 1267 1268 void 1269 fdctimeout(void *arg) 1270 { 1271 struct fdc_softc *fdc = arg; 1272 struct fd_softc *fd; 1273 int s; 1274 1275 s = splbio(); 1276 fd = fdc->sc_drives.tqh_first; 1277 if (fd == NULL) { 1278 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1279 fdc->sc_dev.dv_xname, 1280 fdc->sc_state, fdc->sc_istatus); 1281 fdc->sc_state = DEVIDLE; 1282 goto out; 1283 } 1284 1285 if (BUFQ_PEEK(fd->sc_q) != NULL) 1286 fdc->sc_state++; 1287 else 1288 fdc->sc_state = DEVIDLE; 1289 1290 (void)fdcstate(fdc); 1291 out: 1292 splx(s); 1293 1294 } 1295 1296 void 1297 fdcpseudointr(void *arg) 1298 { 1299 struct fdc_softc *fdc = arg; 1300 int s; 1301 1302 /* Just ensure it has the right spl. */ 1303 s = splbio(); 1304 (void)fdcstate(fdc); 1305 splx(s); 1306 } 1307 1308 1309 /* 1310 * hardware interrupt entry point: used only if no `fast trap' * (in-window) 1311 * handler is available. Unfortunately, we have no reliable way to 1312 * determine that the interrupt really came from the floppy controller; 1313 * just hope that the other devices that share this interrupt level 1314 * can do better.. 1315 */ 1316 int 1317 fdc_c_hwintr(void *arg) 1318 { 1319 struct fdc_softc *fdc = arg; 1320 bus_space_tag_t t = fdc->sc_bustag; 1321 bus_space_handle_t h = fdc->sc_handle; 1322 1323 switch (fdc->sc_itask) { 1324 case FDC_ITASK_NONE: 1325 return 0; 1326 case FDC_ITASK_SENSEI: 1327 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1) 1328 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1329 else 1330 fdc->sc_istatus = FDC_ISTATUS_DONE; 1331 softintr_schedule(fdc->sc_sicookie); 1332 return 1; 1333 case FDC_ITASK_RESULT: 1334 if (fdcresult(fdc) == -1) 1335 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1336 else 1337 fdc->sc_istatus = FDC_ISTATUS_DONE; 1338 softintr_schedule(fdc->sc_sicookie); 1339 return 1; 1340 case FDC_ITASK_DMA: 1341 /* Proceed with pseudo-DMA below */ 1342 break; 1343 default: 1344 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1345 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1346 softintr_schedule(fdc->sc_sicookie); 1347 return 1; 1348 } 1349 1350 /* 1351 * Pseudo DMA in progress 1352 */ 1353 for (;;) { 1354 uint8_t msr; 1355 1356 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1357 1358 if ((msr & NE7_RQM) == 0) 1359 /* That's all this round */ 1360 break; 1361 1362 if ((msr & NE7_NDM) == 0) { 1363 fdcresult(fdc); 1364 fdc->sc_istatus = FDC_ISTATUS_DONE; 1365 softintr_schedule(fdc->sc_sicookie); 1366 #ifdef FD_DEBUG 1367 if (fdc_debug > 1) 1368 printf("fdc: overrun: msr = %x, tc = %d\n", 1369 msr, fdc->sc_tc); 1370 #endif 1371 break; 1372 } 1373 1374 /* Another byte can be transferred */ 1375 if ((msr & NE7_DIO) != 0) 1376 *fdc->sc_data = 1377 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1378 else 1379 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1380 *fdc->sc_data); 1381 1382 fdc->sc_data++; 1383 if (--fdc->sc_tc == 0) { 1384 fdc->sc_istatus = FDC_ISTATUS_DONE; 1385 FTC_FLIP; 1386 fdcresult(fdc); 1387 softintr_schedule(fdc->sc_sicookie); 1388 break; 1389 } 1390 } 1391 return 1; 1392 } 1393 1394 void 1395 fdcswintr(void *arg) 1396 { 1397 struct fdc_softc *fdc = arg; 1398 1399 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1400 /* This (software) interrupt is not for us */ 1401 return; 1402 1403 switch (fdc->sc_istatus) { 1404 case FDC_ISTATUS_ERROR: 1405 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1406 break; 1407 case FDC_ISTATUS_SPURIOUS: 1408 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1409 break; 1410 } 1411 1412 fdcstate(fdc); 1413 return; 1414 } 1415 1416 int 1417 fdcstate(struct fdc_softc *fdc) 1418 { 1419 1420 #define st0 fdc->sc_status[0] 1421 #define st1 fdc->sc_status[1] 1422 #define cyl fdc->sc_status[1] 1423 #define FDC_WRFIFO(fdc, c) do { \ 1424 if (fdc_wrfifo(fdc, (c))) { \ 1425 goto xxx; \ 1426 } \ 1427 } while(0) 1428 1429 struct fd_softc *fd; 1430 struct buf *bp; 1431 int read, head, sec, nblks; 1432 struct fd_type *type; 1433 struct ne7_fd_formb *finfo = NULL; 1434 1435 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) { 1436 /* Prevent loop if the reset sequence produces errors */ 1437 if (fdc->sc_state != RESETCOMPLETE && 1438 fdc->sc_state != RECALWAIT && 1439 fdc->sc_state != RECALCOMPLETE) 1440 fdc->sc_state = DORESET; 1441 } 1442 1443 /* Clear I task/status field */ 1444 fdc->sc_istatus = FDC_ISTATUS_NONE; 1445 fdc->sc_itask = FDC_ITASK_NONE; 1446 1447 loop: 1448 /* Is there a drive for the controller to do a transfer with? */ 1449 fd = fdc->sc_drives.tqh_first; 1450 if (fd == NULL) { 1451 fdc->sc_state = DEVIDLE; 1452 return 0; 1453 } 1454 1455 /* Is there a transfer to this drive? If not, deactivate drive. */ 1456 bp = BUFQ_PEEK(fd->sc_q); 1457 if (bp == NULL) { 1458 fd->sc_ops = 0; 1459 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1460 fd->sc_active = 0; 1461 goto loop; 1462 } 1463 1464 if (bp->b_flags & B_FORMAT) 1465 finfo = (struct ne7_fd_formb *)bp->b_data; 1466 1467 switch (fdc->sc_state) { 1468 case DEVIDLE: 1469 fdc->sc_errors = 0; 1470 fd->sc_skip = 0; 1471 fd->sc_bcount = bp->b_bcount; 1472 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1473 callout_stop(&fd->sc_motoroff_ch); 1474 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1475 fdc->sc_state = MOTORWAIT; 1476 return 1; 1477 } 1478 if ((fd->sc_flags & FD_MOTOR) == 0) { 1479 /* Turn on the motor, being careful about pairing. */ 1480 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1481 if (ofd && ofd->sc_flags & FD_MOTOR) { 1482 callout_stop(&ofd->sc_motoroff_ch); 1483 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1484 } 1485 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1486 fd_set_motor(fdc); 1487 fdc->sc_state = MOTORWAIT; 1488 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1489 /* Allow .25s for motor to stabilize. */ 1490 callout_reset(&fd->sc_motoron_ch, hz / 4, 1491 fd_motor_on, fd); 1492 } else { 1493 fd->sc_flags &= ~FD_MOTOR_WAIT; 1494 goto loop; 1495 } 1496 return 1; 1497 } 1498 /* Make sure the right drive is selected. */ 1499 fd_set_motor(fdc); 1500 1501 if (fdc_diskchange(fdc)) 1502 goto dodskchg; 1503 1504 /*FALLTHROUGH*/ 1505 case DOSEEK: 1506 doseek: 1507 if ((fdc->sc_flags & FDC_EIS) && 1508 (bp->b_flags & B_FORMAT) == 0) { 1509 fd->sc_cylin = bp->b_cylinder; 1510 /* We use implied seek */ 1511 goto doio; 1512 } 1513 1514 if (fd->sc_cylin == bp->b_cylinder) 1515 goto doio; 1516 1517 fd->sc_cylin = -1; 1518 fdc->sc_state = SEEKWAIT; 1519 fdc->sc_nstat = 0; 1520 1521 iostat_seek(fd->sc_dk.dk_stats); 1522 1523 disk_busy(&fd->sc_dk); 1524 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1525 1526 /* specify command */ 1527 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1528 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1529 /* XXX head load time == 6ms */ 1530 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1531 1532 fdc->sc_itask = FDC_ITASK_SENSEI; 1533 /* seek function */ 1534 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1535 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1536 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1537 return 1; 1538 1539 case DODSKCHG: 1540 dodskchg: 1541 /* 1542 * Disk change: force a seek operation by going to cyl 1 1543 * followed by a recalibrate. 1544 */ 1545 disk_busy(&fd->sc_dk); 1546 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); 1547 fd->sc_cylin = -1; 1548 fdc->sc_nstat = 0; 1549 fdc->sc_state = DSKCHGWAIT; 1550 1551 fdc->sc_itask = FDC_ITASK_SENSEI; 1552 /* seek function */ 1553 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1554 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1555 FDC_WRFIFO(fdc, 1 * fd->sc_type->step); 1556 return 1; 1557 1558 case DSKCHGWAIT: 1559 callout_stop(&fdc->sc_timo_ch); 1560 disk_unbusy(&fd->sc_dk, 0, 0); 1561 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1562 cyl != 1 * fd->sc_type->step) { 1563 fdcstatus(fdc, "dskchg seek failed"); 1564 fdc->sc_state = DORESET; 1565 } else 1566 fdc->sc_state = DORECAL; 1567 1568 if (fdc_diskchange(fdc)) { 1569 printf("%s: cannot clear disk change status\n", 1570 fdc->sc_dev.dv_xname); 1571 fdc->sc_state = DORESET; 1572 } 1573 goto loop; 1574 1575 case DOIO: 1576 doio: 1577 if (finfo != NULL) 1578 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1579 (char *)finfo; 1580 type = fd->sc_type; 1581 sec = fd->sc_blkno % type->seccyl; 1582 nblks = type->seccyl - sec; 1583 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1584 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1585 fd->sc_nblks = nblks; 1586 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1587 head = sec / type->sectrac; 1588 sec -= head * type->sectrac; 1589 #ifdef DIAGNOSTIC 1590 {int block; 1591 block = (fd->sc_cylin * type->heads + head) * type->sectrac + 1592 sec; 1593 if (block != fd->sc_blkno) { 1594 printf("fdcintr: block %d != blkno %d\n", block, 1595 (int)fd->sc_blkno); 1596 #ifdef DDB 1597 Debugger(); 1598 #endif 1599 }} 1600 #endif 1601 read = bp->b_flags & B_READ; 1602 1603 /* Setup for pseudo DMA */ 1604 fdc->sc_data = bp->b_data + fd->sc_skip; 1605 fdc->sc_tc = fd->sc_nbytes; 1606 1607 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1608 fdc->sc_reg_drs, type->rate); 1609 #ifdef FD_DEBUG 1610 if (fdc_debug > 1) 1611 printf("fdcstate: doio: %s drive %d " 1612 "track %d head %d sec %d nblks %d\n", 1613 finfo ? "format" : 1614 (read ? "read" : "write"), 1615 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1616 #endif 1617 fdc->sc_state = IOCOMPLETE; 1618 fdc->sc_itask = FDC_ITASK_DMA; 1619 fdc->sc_nstat = 0; 1620 1621 disk_busy(&fd->sc_dk); 1622 1623 /* allow 3 seconds for operation */ 1624 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc); 1625 1626 if (finfo != NULL) { 1627 /* formatting */ 1628 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1629 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1630 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1631 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1632 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1633 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1634 } else { 1635 if (read) 1636 FDC_WRFIFO(fdc, NE7CMD_READ); 1637 else 1638 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1639 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1640 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1641 FDC_WRFIFO(fdc, head); 1642 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1643 FDC_WRFIFO(fdc, type->secsize); /*sector size*/ 1644 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/ 1645 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1646 FDC_WRFIFO(fdc, type->datalen); /*data length*/ 1647 } 1648 1649 return 1; /* will return later */ 1650 1651 case SEEKWAIT: 1652 callout_stop(&fdc->sc_timo_ch); 1653 fdc->sc_state = SEEKCOMPLETE; 1654 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1655 /* allow 1/50 second for heads to settle */ 1656 callout_reset(&fdc->sc_intr_ch, hz / 50, 1657 fdcpseudointr, fdc); 1658 return 1; /* will return later */ 1659 } 1660 /*FALLTHROUGH*/ 1661 case SEEKCOMPLETE: 1662 /* no data on seek */ 1663 disk_unbusy(&fd->sc_dk, 0, 0); 1664 1665 /* Make sure seek really happened. */ 1666 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1667 cyl != bp->b_cylinder * fd->sc_type->step) { 1668 #ifdef FD_DEBUG 1669 if (fdc_debug) 1670 fdcstatus(fdc, "seek failed"); 1671 #endif 1672 fdcretry(fdc); 1673 goto loop; 1674 } 1675 fd->sc_cylin = bp->b_cylinder; 1676 goto doio; 1677 1678 case IOTIMEDOUT: 1679 /* 1680 * Try to abort the I/O operation without resetting 1681 * the chip first. Poke TC and arrange to pick up 1682 * the timed out I/O command's status. 1683 */ 1684 fdc->sc_itask = FDC_ITASK_RESULT; 1685 fdc->sc_state = IOCLEANUPWAIT; 1686 fdc->sc_nstat = 0; 1687 /* 1/10 second should be enough */ 1688 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc); 1689 FTC_FLIP; 1690 return 1; 1691 1692 case IOCLEANUPTIMEDOUT: 1693 case SEEKTIMEDOUT: 1694 case RECALTIMEDOUT: 1695 case RESETTIMEDOUT: 1696 case DSKCHGTIMEDOUT: 1697 fdcstatus(fdc, "timeout"); 1698 1699 /* All other timeouts always roll through to a chip reset */ 1700 fdcretry(fdc); 1701 1702 /* Force reset, no matter what fdcretry() says */ 1703 fdc->sc_state = DORESET; 1704 goto loop; 1705 1706 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1707 callout_stop(&fdc->sc_timo_ch); 1708 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1709 (bp->b_flags & B_READ)); 1710 fdcretry(fdc); 1711 goto loop; 1712 1713 case IOCOMPLETE: /* IO DONE, post-analyze */ 1714 callout_stop(&fdc->sc_timo_ch); 1715 1716 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), 1717 (bp->b_flags & B_READ)); 1718 1719 if (fdc->sc_nstat != 7 || st1 != 0 || 1720 ((st0 & 0xf8) != 0 && 1721 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1722 #ifdef FD_DEBUG 1723 if (fdc_debug) { 1724 fdcstatus(fdc, bp->b_flags & B_READ ? 1725 "read failed" : "write failed"); 1726 printf("blkno %lld nblks %d nstat %d tc %d\n", 1727 (long long)fd->sc_blkno, fd->sc_nblks, 1728 fdc->sc_nstat, fdc->sc_tc); 1729 } 1730 #endif 1731 if (fdc->sc_nstat == 7 && 1732 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1733 1734 /* 1735 * Silently retry overruns if no other 1736 * error bit is set. Adjust threshold. 1737 */ 1738 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1739 if (thr < 15) { 1740 thr++; 1741 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1742 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1743 #ifdef FD_DEBUG 1744 if (fdc_debug) 1745 printf("fdc: %d -> threshold\n", 1746 thr); 1747 #endif 1748 fdconf(fdc); 1749 fdc->sc_overruns = 0; 1750 } 1751 if (++fdc->sc_overruns < 3) { 1752 fdc->sc_state = DOIO; 1753 goto loop; 1754 } 1755 } 1756 fdcretry(fdc); 1757 goto loop; 1758 } 1759 if (fdc->sc_errors) { 1760 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1761 fd->sc_skip / FD_BSIZE(fd), 1762 (struct disklabel *)NULL); 1763 printf("\n"); 1764 fdc->sc_errors = 0; 1765 } else { 1766 if (--fdc->sc_overruns < -20) { 1767 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1768 if (thr > 0) { 1769 thr--; 1770 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1771 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1772 #ifdef FD_DEBUG 1773 if (fdc_debug) 1774 printf("fdc: %d -> threshold\n", 1775 thr); 1776 #endif 1777 fdconf(fdc); 1778 } 1779 fdc->sc_overruns = 0; 1780 } 1781 } 1782 fd->sc_blkno += fd->sc_nblks; 1783 fd->sc_skip += fd->sc_nbytes; 1784 fd->sc_bcount -= fd->sc_nbytes; 1785 if (finfo == NULL && fd->sc_bcount > 0) { 1786 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1787 goto doseek; 1788 } 1789 fdfinish(fd, bp); 1790 goto loop; 1791 1792 case DORESET: 1793 /* try a reset, keep motor on */ 1794 fd_set_motor(fdc); 1795 delay(100); 1796 fdc->sc_nstat = 0; 1797 fdc->sc_itask = FDC_ITASK_SENSEI; 1798 fdc->sc_state = RESETCOMPLETE; 1799 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); 1800 fdc_reset(fdc); 1801 return 1; /* will return later */ 1802 1803 case RESETCOMPLETE: 1804 callout_stop(&fdc->sc_timo_ch); 1805 fdconf(fdc); 1806 1807 /* FALLTHROUGH */ 1808 case DORECAL: 1809 fdc->sc_state = RECALWAIT; 1810 fdc->sc_itask = FDC_ITASK_SENSEI; 1811 fdc->sc_nstat = 0; 1812 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); 1813 /* recalibrate function */ 1814 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1815 FDC_WRFIFO(fdc, fd->sc_drive); 1816 return 1; /* will return later */ 1817 1818 case RECALWAIT: 1819 callout_stop(&fdc->sc_timo_ch); 1820 fdc->sc_state = RECALCOMPLETE; 1821 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1822 /* allow 1/30 second for heads to settle */ 1823 callout_reset(&fdc->sc_intr_ch, hz / 30, 1824 fdcpseudointr, fdc); 1825 return 1; /* will return later */ 1826 } 1827 1828 case RECALCOMPLETE: 1829 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1830 #ifdef FD_DEBUG 1831 if (fdc_debug) 1832 fdcstatus(fdc, "recalibrate failed"); 1833 #endif 1834 fdcretry(fdc); 1835 goto loop; 1836 } 1837 fd->sc_cylin = 0; 1838 goto doseek; 1839 1840 case MOTORWAIT: 1841 if (fd->sc_flags & FD_MOTOR_WAIT) 1842 return 1; /* time's not up yet */ 1843 goto doseek; 1844 1845 default: 1846 fdcstatus(fdc, "stray interrupt"); 1847 return 1; 1848 } 1849 #ifdef DIAGNOSTIC 1850 panic("fdcintr: impossible"); 1851 #endif 1852 1853 xxx: 1854 /* 1855 * We get here if the chip locks up in FDC_WRFIFO() 1856 * Cancel any operation and schedule a reset 1857 */ 1858 callout_stop(&fdc->sc_timo_ch); 1859 fdcretry(fdc); 1860 fdc->sc_state = DORESET; 1861 goto loop; 1862 1863 #undef st0 1864 #undef st1 1865 #undef cyl 1866 } 1867 1868 void 1869 fdcretry(struct fdc_softc *fdc) 1870 { 1871 struct fd_softc *fd; 1872 struct buf *bp; 1873 int error = EIO; 1874 1875 fd = fdc->sc_drives.tqh_first; 1876 bp = BUFQ_PEEK(fd->sc_q); 1877 1878 fdc->sc_overruns = 0; 1879 if (fd->sc_opts & FDOPT_NORETRY) 1880 goto fail; 1881 1882 switch (fdc->sc_errors) { 1883 case 0: 1884 if (fdc->sc_nstat == 7 && 1885 (fdc->sc_status[0] & 0xd8) == 0x40 && 1886 (fdc->sc_status[1] & 0x2) == 0x2) { 1887 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1888 error = EROFS; 1889 goto failsilent; 1890 } 1891 /* try again */ 1892 fdc->sc_state = 1893 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1894 break; 1895 1896 case 1: case 2: case 3: 1897 /* didn't work; try recalibrating */ 1898 fdc->sc_state = DORECAL; 1899 break; 1900 1901 case 4: 1902 if (fdc->sc_nstat == 7 && 1903 fdc->sc_status[0] == 0 && 1904 fdc->sc_status[1] == 0 && 1905 fdc->sc_status[2] == 0) { 1906 /* 1907 * We've retried a few times and we've got 1908 * valid status and all three status bytes 1909 * are zero. Assume this condition is the 1910 * result of no disk loaded into the drive. 1911 */ 1912 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1913 error = ENODEV; 1914 goto failsilent; 1915 } 1916 1917 /* still no go; reset the bastard */ 1918 fdc->sc_state = DORESET; 1919 break; 1920 1921 default: 1922 fail: 1923 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1924 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1925 fd->sc_skip / FD_BSIZE(fd), 1926 (struct disklabel *)NULL); 1927 printf("\n"); 1928 fdcstatus(fdc, "controller status"); 1929 } 1930 1931 failsilent: 1932 bp->b_flags |= B_ERROR; 1933 bp->b_error = error; 1934 fdfinish(fd, bp); 1935 } 1936 fdc->sc_errors++; 1937 } 1938 1939 int 1940 fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l) 1941 { 1942 struct fd_softc *fd; 1943 struct fdc_softc *fdc; 1944 struct fdformat_parms *form_parms; 1945 struct fdformat_cmd *form_cmd; 1946 struct ne7_fd_formb *fd_formb; 1947 int il[FD_MAX_NSEC + 1]; 1948 int unit; 1949 int i, j; 1950 int error; 1951 1952 unit = FDUNIT(dev); 1953 if (unit >= fd_cd.cd_ndevs) 1954 return ENXIO; 1955 1956 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1957 fdc = (struct fdc_softc *)device_parent(&fd->sc_dv); 1958 1959 switch (cmd) { 1960 case DIOCGDINFO: 1961 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1962 return 0; 1963 1964 case DIOCWLABEL: 1965 if ((flag & FWRITE) == 0) 1966 return EBADF; 1967 /* XXX do something */ 1968 return 0; 1969 1970 case DIOCWDINFO: 1971 if ((flag & FWRITE) == 0) 1972 return EBADF; 1973 1974 error = setdisklabel(fd->sc_dk.dk_label, 1975 (struct disklabel *)addr, 0, 1976 fd->sc_dk.dk_cpulabel); 1977 if (error) 1978 return error; 1979 1980 error = writedisklabel(dev, fdstrategy, 1981 fd->sc_dk.dk_label, 1982 fd->sc_dk.dk_cpulabel); 1983 return error; 1984 1985 case DIOCLOCK: 1986 /* 1987 * Nothing to do here, really. 1988 */ 1989 return 0; 1990 1991 case DIOCEJECT: 1992 if (*(int *)addr == 0) { 1993 int part = DISKPART(dev); 1994 /* 1995 * Don't force eject: check that we are the only 1996 * partition open. If so, unlock it. 1997 */ 1998 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1999 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 2000 fd->sc_dk.dk_openmask) { 2001 return EBUSY; 2002 } 2003 } 2004 /* FALLTHROUGH */ 2005 case ODIOCEJECT: 2006 if (fdc->sc_flags & FDC_NOEJECT) 2007 return EINVAL; 2008 fd_do_eject(fd); 2009 return 0; 2010 2011 case FDIOCGETFORMAT: 2012 form_parms = (struct fdformat_parms *)addr; 2013 form_parms->fdformat_version = FDFORMAT_VERSION; 2014 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 2015 form_parms->ncyl = fd->sc_type->cylinders; 2016 form_parms->nspt = fd->sc_type->sectrac; 2017 form_parms->ntrk = fd->sc_type->heads; 2018 form_parms->stepspercyl = fd->sc_type->step; 2019 form_parms->gaplen = fd->sc_type->gap2; 2020 form_parms->fillbyte = fd->sc_type->fillbyte; 2021 form_parms->interleave = fd->sc_type->interleave; 2022 switch (fd->sc_type->rate) { 2023 case FDC_500KBPS: 2024 form_parms->xfer_rate = 500 * 1024; 2025 break; 2026 case FDC_300KBPS: 2027 form_parms->xfer_rate = 300 * 1024; 2028 break; 2029 case FDC_250KBPS: 2030 form_parms->xfer_rate = 250 * 1024; 2031 break; 2032 default: 2033 return EINVAL; 2034 } 2035 return 0; 2036 2037 case FDIOCSETFORMAT: 2038 if ((flag & FWRITE) == 0) 2039 return EBADF; /* must be opened for writing */ 2040 2041 form_parms = (struct fdformat_parms *)addr; 2042 if (form_parms->fdformat_version != FDFORMAT_VERSION) 2043 return EINVAL;/* wrong version of formatting prog */ 2044 2045 i = form_parms->nbps >> 7; 2046 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 2047 i & ~(1 << (ffs(i)-1))) 2048 /* not a power-of-two multiple of 128 */ 2049 return EINVAL; 2050 2051 switch (form_parms->xfer_rate) { 2052 case 500 * 1024: 2053 fd->sc_type->rate = FDC_500KBPS; 2054 break; 2055 case 300 * 1024: 2056 fd->sc_type->rate = FDC_300KBPS; 2057 break; 2058 case 250 * 1024: 2059 fd->sc_type->rate = FDC_250KBPS; 2060 break; 2061 default: 2062 return EINVAL; 2063 } 2064 2065 if (form_parms->nspt > FD_MAX_NSEC || 2066 form_parms->fillbyte > 0xff || 2067 form_parms->interleave > 0xff) 2068 return EINVAL; 2069 fd->sc_type->sectrac = form_parms->nspt; 2070 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 2071 return EINVAL; 2072 fd->sc_type->heads = form_parms->ntrk; 2073 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 2074 fd->sc_type->secsize = ffs(i)-1; 2075 fd->sc_type->gap2 = form_parms->gaplen; 2076 fd->sc_type->cylinders = form_parms->ncyl; 2077 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 2078 form_parms->nbps / DEV_BSIZE; 2079 fd->sc_type->step = form_parms->stepspercyl; 2080 fd->sc_type->fillbyte = form_parms->fillbyte; 2081 fd->sc_type->interleave = form_parms->interleave; 2082 return 0; 2083 2084 case FDIOCFORMAT_TRACK: 2085 if((flag & FWRITE) == 0) 2086 /* must be opened for writing */ 2087 return EBADF; 2088 form_cmd = (struct fdformat_cmd *)addr; 2089 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2090 /* wrong version of formatting prog */ 2091 return EINVAL; 2092 2093 if (form_cmd->head >= fd->sc_type->heads || 2094 form_cmd->cylinder >= fd->sc_type->cylinders) { 2095 return EINVAL; 2096 } 2097 2098 fd_formb = malloc(sizeof(struct ne7_fd_formb), 2099 M_TEMP, M_NOWAIT); 2100 if (fd_formb == 0) 2101 return ENOMEM; 2102 2103 fd_formb->head = form_cmd->head; 2104 fd_formb->cyl = form_cmd->cylinder; 2105 fd_formb->transfer_rate = fd->sc_type->rate; 2106 fd_formb->fd_formb_secshift = fd->sc_type->secsize; 2107 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; 2108 fd_formb->fd_formb_gaplen = fd->sc_type->gap2; 2109 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; 2110 2111 bzero(il, sizeof il); 2112 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { 2113 while (il[(j % fd_formb->fd_formb_nsecs) + 1]) 2114 j++; 2115 il[(j % fd_formb->fd_formb_nsecs) + 1] = i; 2116 j += fd->sc_type->interleave; 2117 } 2118 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { 2119 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; 2120 fd_formb->fd_formb_headno(i) = form_cmd->head; 2121 fd_formb->fd_formb_secno(i) = il[i + 1]; 2122 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; 2123 } 2124 2125 error = fdformat(dev, fd_formb, l->l_proc); 2126 free(fd_formb, M_TEMP); 2127 return error; 2128 2129 case FDIOCGETOPTS: /* get drive options */ 2130 *(int *)addr = fd->sc_opts; 2131 return 0; 2132 2133 case FDIOCSETOPTS: /* set drive options */ 2134 fd->sc_opts = *(int *)addr; 2135 return 0; 2136 2137 #ifdef FD_DEBUG 2138 case _IO('f', 100): 2139 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2140 fdcresult(fdc); 2141 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2142 for (i = 0; i < fdc->sc_nstat; i++) 2143 printf(" 0x%x", fdc->sc_status[i]); 2144 printf(">\n"); 2145 return 0; 2146 2147 case _IOW('f', 101, int): 2148 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2149 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2150 fdconf(fdc); 2151 return 0; 2152 2153 case _IO('f', 102): 2154 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2155 fdcresult(fdc); 2156 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2157 for (i=0; i< fdc->sc_nstat; i++) 2158 printf(" 0x%x", fdc->sc_status[i]); 2159 printf(">\n"); 2160 return 0; 2161 #endif 2162 default: 2163 return ENOTTY; 2164 } 2165 2166 #ifdef DIAGNOSTIC 2167 panic("fdioctl: impossible"); 2168 #endif 2169 } 2170 2171 int 2172 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) 2173 { 2174 int rv = 0; 2175 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2176 struct fd_type *type = fd->sc_type; 2177 struct buf *bp; 2178 2179 /* set up a buffer header for fdstrategy() */ 2180 bp = getiobuf_nowait(); 2181 if (bp == NULL) 2182 return ENOBUFS; 2183 2184 bp->b_vp = NULL; 2185 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2186 bp->b_proc = p; 2187 bp->b_dev = dev; 2188 2189 /* 2190 * Calculate a fake blkno, so fdstrategy() would initiate a 2191 * seek to the requested cylinder. 2192 */ 2193 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2194 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2195 / DEV_BSIZE; 2196 2197 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2198 bp->b_data = (caddr_t)finfo; 2199 2200 #ifdef FD_DEBUG 2201 if (fdc_debug) { 2202 int i; 2203 2204 printf("fdformat: blkno 0x%llx count %d\n", 2205 (unsigned long long)bp->b_blkno, bp->b_bcount); 2206 2207 printf("\tcyl:\t%d\n", finfo->cyl); 2208 printf("\thead:\t%d\n", finfo->head); 2209 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2210 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2211 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2212 printf("\ttrack data:"); 2213 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2214 printf(" [c%d h%d s%d]", 2215 finfo->fd_formb_cylno(i), 2216 finfo->fd_formb_headno(i), 2217 finfo->fd_formb_secno(i) ); 2218 if (finfo->fd_formb_secsize(i) != 2) 2219 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2220 } 2221 printf("\n"); 2222 } 2223 #endif 2224 2225 /* now do the format */ 2226 fdstrategy(bp); 2227 2228 /* ...and wait for it to complete */ 2229 rv = biowait(bp); 2230 putiobuf(bp); 2231 return rv; 2232 } 2233 2234 void 2235 fdgetdisklabel(dev_t dev) 2236 { 2237 int unit = FDUNIT(dev), i; 2238 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2239 struct disklabel *lp = fd->sc_dk.dk_label; 2240 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2241 2242 bzero(lp, sizeof(struct disklabel)); 2243 bzero(lp, sizeof(struct cpu_disklabel)); 2244 2245 lp->d_type = DTYPE_FLOPPY; 2246 lp->d_secsize = FD_BSIZE(fd); 2247 lp->d_secpercyl = fd->sc_type->seccyl; 2248 lp->d_nsectors = fd->sc_type->sectrac; 2249 lp->d_ncylinders = fd->sc_type->cylinders; 2250 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2251 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2252 lp->d_rpm = 300; /* XXX like it matters... */ 2253 2254 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename)); 2255 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2256 lp->d_interleave = 1; 2257 lp->d_flags = D_REMOVABLE; 2258 2259 lp->d_partitions[RAW_PART].p_offset = 0; 2260 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2261 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2262 lp->d_npartitions = RAW_PART + 1; 2263 2264 lp->d_magic = DISKMAGIC; 2265 lp->d_magic2 = DISKMAGIC; 2266 lp->d_checksum = dkcksum(lp); 2267 2268 /* 2269 * Call the generic disklabel extraction routine. If there's 2270 * not a label there, fake it. 2271 */ 2272 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2273 strncpy(lp->d_packname, "default label", 2274 sizeof(lp->d_packname)); 2275 /* 2276 * Reset the partition info; it might have gotten 2277 * trashed in readdisklabel(). 2278 * 2279 * XXX Why do we have to do this? readdisklabel() 2280 * should be safe... 2281 */ 2282 for (i = 0; i < MAXPARTITIONS; ++i) { 2283 lp->d_partitions[i].p_offset = 0; 2284 if (i == RAW_PART) { 2285 lp->d_partitions[i].p_size = 2286 lp->d_secpercyl * lp->d_ncylinders; 2287 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2288 } else { 2289 lp->d_partitions[i].p_size = 0; 2290 lp->d_partitions[i].p_fstype = FS_UNUSED; 2291 } 2292 } 2293 lp->d_npartitions = RAW_PART + 1; 2294 } 2295 } 2296 2297 void 2298 fd_do_eject(struct fd_softc *fd) 2299 { 2300 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv); 2301 2302 #ifndef SUN4U 2303 if (CPU_ISSUN4C) { 2304 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2305 delay(10); 2306 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2307 return; 2308 } 2309 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2310 #endif 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 #ifndef SUN4U 2320 } 2321 #endif 2322 } 2323 2324 /* ARGSUSED */ 2325 void 2326 fd_mountroot_hook(struct device *dev) 2327 { 2328 int c; 2329 2330 fd_do_eject((struct fd_softc *)dev); 2331 printf("Insert filesystem floppy and press return."); 2332 for (;;) { 2333 c = cngetc(); 2334 if ((c == '\r') || (c == '\n')) { 2335 printf("\n"); 2336 break; 2337 } 2338 } 2339 } 2340 2341 #ifdef MEMORY_DISK_HOOKS 2342 2343 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2344 2345 int 2346 fd_read_md_image(size_t *sizep, caddr_t *addrp) 2347 { 2348 struct buf buf, *bp = &buf; 2349 dev_t dev; 2350 off_t offset; 2351 caddr_t addr; 2352 2353 dev = makedev(54,0); /* XXX */ 2354 2355 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2356 *addrp = addr; 2357 2358 if (fdopen(dev, 0, S_IFCHR, NULL)) 2359 panic("fd: mountroot: fdopen"); 2360 2361 offset = 0; 2362 2363 for (;;) { 2364 bp->b_dev = dev; 2365 bp->b_error = 0; 2366 bp->b_resid = 0; 2367 bp->b_proc = NULL; 2368 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2369 bp->b_blkno = btodb(offset); 2370 bp->b_bcount = DEV_BSIZE; 2371 bp->b_data = addr; 2372 fdstrategy(bp); 2373 while ((bp->b_flags & B_DONE) == 0) { 2374 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2375 } 2376 if (bp->b_error) 2377 panic("fd: mountroot: fdread error %d", bp->b_error); 2378 2379 if (bp->b_resid != 0) 2380 break; 2381 2382 addr += DEV_BSIZE; 2383 offset += DEV_BSIZE; 2384 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2385 break; 2386 } 2387 (void)fdclose(dev, 0, S_IFCHR, NULL); 2388 *sizep = offset; 2389 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2390 return 0; 2391 } 2392 #endif /* MEMORY_DISK_HOOKS */ 2393
Indexes created Mon Sep 29 21:09:56 GMT 2025