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[netbsd-mini2440.git] / sys / arch / sparc64 / dev / fdc.c
blobb46df8e53b8092231fdaa1ed11285dd322cbffc9
1 /* $NetBSD: fdc.c,v 1.31 2009/05/15 20:52:22 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 *
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: fdc.c,v 1.31 2009/05/15 20:52:22 jnemeth Exp $");
105
106 #include "opt_ddb.h"
107 #include "opt_md.h"
108
109 #include <sys/param.h>
110 #include <sys/types.h>
111 #include <sys/systm.h>
112 #include <sys/callout.h>
113 #include <sys/kernel.h>
114 #include <sys/file.h>
115 #include <sys/ioctl.h>
116 #include <sys/device.h>
117 #include <sys/disklabel.h>
118 #include <sys/disk.h>
119 #include <sys/fdio.h>
120 #include <sys/buf.h>
121 #include <sys/bufq.h>
122 #include <sys/malloc.h>
123 #include <sys/proc.h>
124 #include <sys/uio.h>
125 #include <sys/stat.h>
126 #include <sys/syslog.h>
127 #include <sys/queue.h>
128 #include <sys/conf.h>
129 #include <sys/intr.h>
130
131 #include <dev/cons.h>
132
133 #include <uvm/uvm_extern.h>
134
135 #include <machine/autoconf.h>
136
137 #ifdef SUN4
138 #include <sparc/sparc/auxreg.h>
139 #include <sparc/dev/fdreg.h>
140 #include <sparc/dev/fdvar.h>
141 #elif SUN4U
142 #include <dev/ebus/ebusreg.h>
143 #include <dev/ebus/ebusvar.h>
144 /* #include <sparc/sparc/auxreg.h> */
145 #include <sparc64/dev/auxioreg.h>
146 #include <sparc64/dev/auxiovar.h>
147 #include <sparc64/dev/fdcreg.h>
148 #include <sparc64/dev/fdcvar.h>
149 #endif
150
151 #include <prop/proplib.h>
152
153 #define FDUNIT(dev) (minor(dev) / 8)
154 #define FDTYPE(dev) (minor(dev) % 8)
155
156 /* (mis)use device use flag to identify format operation */
157 #define B_FORMAT B_DEVPRIVATE
158
159 #define FD_DEBUG
160 #ifdef FD_DEBUG
161 int fdc_debug = 0;
162 #endif
163
164 enum fdc_state {
165 DEVIDLE = 0,
166 MOTORWAIT, /* 1 */
167 DOSEEK, /* 2 */
168 SEEKWAIT, /* 3 */
169 SEEKTIMEDOUT, /* 4 */
170 SEEKCOMPLETE, /* 5 */
171 DOIO, /* 6 */
172 IOCOMPLETE, /* 7 */
173 IOTIMEDOUT, /* 8 */
174 IOCLEANUPWAIT, /* 9 */
175 IOCLEANUPTIMEDOUT,/*10 */
176 DORESET, /* 11 */
177 RESETCOMPLETE, /* 12 */
178 RESETTIMEDOUT, /* 13 */
179 DORECAL, /* 14 */
180 RECALWAIT, /* 15 */
181 RECALTIMEDOUT, /* 16 */
182 RECALCOMPLETE, /* 17 */
183 DODSKCHG, /* 18 */
184 DSKCHGWAIT, /* 19 */
185 DSKCHGTIMEDOUT, /* 20 */
186 };
187
188 /* software state, per controller */
189 struct fdc_softc {
190 struct device sc_dev; /* boilerplate */
191 bus_space_tag_t sc_bustag;
192
193 struct callout sc_timo_ch; /* timeout callout */
194 struct callout sc_intr_ch; /* pseudo-intr callout */
195
196 struct fd_softc *sc_fd[4]; /* pointers to children */
197 TAILQ_HEAD(drivehead, fd_softc) sc_drives;
198 enum fdc_state sc_state;
199 int sc_flags;
200 #define FDC_82077 0x01
201 #define FDC_NEEDHEADSETTLE 0x02
202 #define FDC_EIS 0x04
203 #define FDC_NEEDMOTORWAIT 0x08
204 #define FDC_NOEJECT 0x10
205 #define FDC_EBUS 0x20
206 int sc_errors; /* number of retries so far */
207 int sc_overruns; /* number of DMA overruns */
208 int sc_cfg; /* current configuration */
209 struct fdcio sc_io;
210 #define sc_handle sc_io.fdcio_handle
211 #define sc_reg_msr sc_io.fdcio_reg_msr
212 #define sc_reg_fifo sc_io.fdcio_reg_fifo
213 #define sc_reg_dor sc_io.fdcio_reg_dor
214 #define sc_reg_dir sc_io.fdcio_reg_dir
215 #define sc_reg_drs sc_io.fdcio_reg_msr
216 #define sc_itask sc_io.fdcio_itask
217 #define sc_istatus sc_io.fdcio_istatus
218 #define sc_data sc_io.fdcio_data
219 #define sc_tc sc_io.fdcio_tc
220 #define sc_nstat sc_io.fdcio_nstat
221 #define sc_status sc_io.fdcio_status
222 #define sc_intrcnt sc_io.fdcio_intrcnt
223
224 void *sc_sicookie; /* softint(9) cookie */
225 };
226
227 #ifdef SUN4
228 extern struct fdcio *fdciop; /* I/O descriptor used in fdintr.s */
229 #endif
230
231 /* controller driver configuration */
232 #ifdef SUN4
233 int fdcmatch_mainbus(struct device *, struct cfdata *, void*);
234 int fdcmatch_obio(struct device *, struct cfdata *, void *);
235 void fdcattach_mainbus(struct device *, struct device *, void *);
236 void fdcattach_obio(struct device *, struct device *, void *);
237 #elif SUN4U
238 int fdcmatch_sbus(struct device *, struct cfdata *, void *);
239 int fdcmatch_ebus(struct device *, struct cfdata *, void *);
240 void fdcattach_sbus(struct device *, struct device *, void *);
241 void fdcattach_ebus(struct device *, struct device *, void *);
242 #endif
243
244 int fdcattach(struct fdc_softc *, int);
245
246 #ifdef SUN4
247 CFATTACH_DECL(fdc_mainbus, sizeof(struct fdc_softc),
248 fdcmatch_mainbus, fdcattach_mainbus, NULL, NULL);
249
250 CFATTACH_DECL(fdc_obio, sizeof(struct fdc_softc),
251 fdcmatch_obio, fdcattach_obio, NULL, NULL);
252 #elif SUN4U
253 CFATTACH_DECL(fdc_sbus, sizeof(struct fdc_softc),
254 fdcmatch_sbus, fdcattach_sbus, NULL, NULL);
255
256 CFATTACH_DECL(fdc_ebus, sizeof(struct fdc_softc),
257 fdcmatch_ebus, fdcattach_ebus, NULL, NULL);
258 #endif
259
260 inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t);
261
262 /*
263 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how
264 * we tell them apart.
265 */
266 struct fd_type {
267 int sectrac; /* sectors per track */
268 int heads; /* number of heads */
269 int seccyl; /* sectors per cylinder */
270 int secsize; /* size code for sectors */
271 int datalen; /* data len when secsize = 0 */
272 int steprate; /* step rate and head unload time */
273 int gap1; /* gap len between sectors */
274 int gap2; /* formatting gap */
275 int cylinders; /* total num of cylinders */
276 int size; /* size of disk in sectors */
277 int step; /* steps per cylinder */
278 int rate; /* transfer speed code */
279 int fillbyte; /* format fill byte */
280 int interleave; /* interleave factor (formatting) */
281 const char *name;
282 };
283
284 /* The order of entries in the following table is important -- BEWARE! */
285 struct fd_type fd_types[] = {
286 { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */
287 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */
288 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */
289 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */
290 };
291
292 /* software state, per disk (with up to 4 disks per ctlr) */
293 struct fd_softc {
294 struct device sc_dv; /* generic device info */
295 struct disk sc_dk; /* generic disk info */
296
297 struct fd_type *sc_deftype; /* default type descriptor */
298 struct fd_type *sc_type; /* current type descriptor */
299
300 struct callout sc_motoron_ch;
301 struct callout sc_motoroff_ch;
302
303 daddr_t sc_blkno; /* starting block number */
304 int sc_bcount; /* byte count left */
305 int sc_skip; /* bytes already transferred */
306 int sc_nblks; /* number of blocks currently transferring */
307 int sc_nbytes; /* number of bytes currently transferring */
308
309 int sc_drive; /* physical unit number */
310 int sc_flags;
311 #define FD_OPEN 0x01 /* it's open */
312 #define FD_MOTOR 0x02 /* motor should be on */
313 #define FD_MOTOR_WAIT 0x04 /* motor coming up */
314 int sc_cylin; /* where we think the head is */
315 int sc_opts; /* user-set options */
316
317 TAILQ_ENTRY(fd_softc) sc_drivechain;
318 int sc_ops; /* I/O ops since last switch */
319 struct bufq_state *sc_q;/* pending I/O requests */
320 int sc_active; /* number of active I/O requests */
321 };
322
323 /* floppy driver configuration */
324 int fdmatch(struct device *, struct cfdata *, void *);
325 void fdattach(struct device *, struct device *, void *);
326 bool fdshutdown(device_t, int);
327 bool fdsuspend(device_t, pmf_qual_t);
328
329 CFATTACH_DECL(fd, sizeof(struct fd_softc),
330 fdmatch, fdattach, NULL, NULL);
331
332 extern struct cfdriver fd_cd;
333
334 dev_type_open(fdopen);
335 dev_type_close(fdclose);
336 dev_type_read(fdread);
337 dev_type_write(fdwrite);
338 dev_type_ioctl(fdioctl);
339 dev_type_strategy(fdstrategy);
340
341 const struct bdevsw fd_bdevsw = {
342 fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK
343 };
344
345 const struct cdevsw fd_cdevsw = {
346 fdopen, fdclose, fdread, fdwrite, fdioctl,
347 nostop, notty, nopoll, nommap, nokqfilter, D_DISK
348 };
349
350 void fdgetdisklabel(dev_t);
351 int fd_get_parms(struct fd_softc *);
352 void fdstrategy(struct buf *);
353 void fdstart(struct fd_softc *);
354 int fdprint(void *, const char *);
355
356 struct dkdriver fddkdriver = { fdstrategy, NULL };
357
358 struct fd_type *fd_nvtotype(char *, int, int);
359 void fd_set_motor(struct fdc_softc *);
360 void fd_motor_off(void *);
361 void fd_motor_on(void *);
362 int fdcresult(struct fdc_softc *);
363 int fdc_wrfifo(struct fdc_softc *, uint8_t);
364 void fdcstart(struct fdc_softc *);
365 void fdcstatus(struct fdc_softc *, const char *);
366 void fdc_reset(struct fdc_softc *);
367 int fdc_diskchange(struct fdc_softc *);
368 void fdctimeout(void *);
369 void fdcpseudointr(void *);
370 int fdc_c_hwintr(void *);
371 void fdchwintr(void);
372 void fdcswintr(void *);
373 int fdcstate(struct fdc_softc *);
374 void fdcretry(struct fdc_softc *);
375 void fdfinish(struct fd_softc *, struct buf *);
376 int fdformat(dev_t, struct ne7_fd_formb *, struct proc *);
377 void fd_do_eject(struct fd_softc *);
378 void fd_mountroot_hook(struct device *);
379 static int fdconf(struct fdc_softc *);
380 static void establish_chip_type(
381 struct fdc_softc *,
382 bus_space_tag_t,
383 bus_addr_t,
384 bus_size_t,
385 bus_space_handle_t);
386 static void fd_set_properties(struct fd_softc *);
387
388 #ifdef MEMORY_DISK_HOOKS
389 int fd_read_md_image(size_t *, void **);
390 #endif
391
392 #ifdef SUN4
393 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd")
394
395 int
396 fdcmatch_mainbus(struct device *parent, struct cfdata *match, void *aux)
397 {
398 struct mainbus_attach_args *ma = aux;
399
400 /*
401 * Floppy controller is on mainbus on sun4c.
402 */
403 if (!CPU_ISSUN4C)
404 return 0;
405
406 /* sun4c PROMs call the controller "fd" */
407 if (strcmp("fd", ma->ma_name) != 0)
408 return 0;
409
410 return bus_space_probe(ma->ma_bustag,
411 ma->ma_paddr,
412 1, /* probe size */
413 0, /* offset */
414 0, /* flags */
415 NULL, NULL);
416 }
417
418 int
419 fdcmatch_obio(struct device *parent, struct cfdata *match, void *aux)
420 {
421 union obio_attach_args *uoba = aux;
422 struct sbus_attach_args *sa;
423
424 /*
425 * Floppy controller is on obio on sun4m.
426 */
427 if (uoba->uoba_isobio4 != 0)
428 return 0;
429
430 sa = &uoba->uoba_sbus;
431
432 /* sun4m PROMs call the controller "SUNW,fdtwo" */
433 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0)
434 return 0;
435
436 return bus_space_probe(sa->sa_bustag,
437 sbus_bus_addr(sa->sa_bustag,
438 sa->sa_slot, sa->sa_offset),
439 1, /* probe size */
440 0, /* offset */
441 0, /* flags */
442 NULL, NULL);
443 }
444
445 #elif SUN4U
446
447 int
448 fdcmatch_sbus(struct device *parent, struct cfdata *match, void *aux)
449 {
450 struct sbus_attach_args *sa = aux;
451
452 return strcmp("SUNW,fdtwo", sa->sa_name) == 0;
453 }
454
455 int
456 fdcmatch_ebus(struct device *parent, struct cfdata *match, void *aux)
457 {
458 struct ebus_attach_args *ea = aux;
459
460 return strcmp("fdthree", ea->ea_name) == 0;
461 }
462 #endif
463
464 static void
465 establish_chip_type(struct fdc_softc *fdc,
466 bus_space_tag_t tag, bus_addr_t addr, bus_size_t size,
467 bus_space_handle_t handle)
468 {
469 uint8_t v;
470
471 /*
472 * This hack from Chris Torek: apparently DOR really
473 * addresses MSR/DRS on a 82072.
474 * We used to rely on the VERSION command to tell the
475 * difference (which did not work).
476 */
477
478 /* First, check the size of the register bank */
479 if (size < 8)
480 /* It isn't a 82077 */
481 return;
482
483 #ifdef SUN4
484 /* Then probe the DOR register offset */
485 if (bus_space_probe(tag, addr,
486 1, /* probe size */
487 FDREG77_DOR, /* offset */
488 0, /* flags */
489 NULL, NULL) == 0) {
490
491 /* It isn't a 82077 */
492 return;
493 }
494 #endif
495
496 v = bus_space_read_1(tag, handle, FDREG77_DOR);
497 if (v == NE7_RQM) {
498 /*
499 * Value in DOR looks like it's really MSR
500 */
501 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS);
502 v = bus_space_read_1(tag, handle, FDREG77_DOR);
503 if (v == NE7_RQM) {
504 /*
505 * The value in the DOR didn't stick;
506 * it isn't a 82077
507 */
508 return;
509 }
510 }
511
512 fdc->sc_flags |= FDC_82077;
513 }
514
515 /*
516 * Arguments passed between fdcattach and fdprobe.
517 */
518 struct fdc_attach_args {
519 int fa_drive;
520 struct fd_type *fa_deftype;
521 };
522
523 /*
524 * Print the location of a disk drive (called just before attaching the
525 * the drive). If `fdc' is not NULL, the drive was found but was not
526 * in the system config file; print the drive name as well.
527 * Return QUIET (config_find ignores this if the device was configured) to
528 * avoid printing `fdN not configured' messages.
529 */
530 int
531 fdprint(void *aux, const char *fdc)
532 {
533 register struct fdc_attach_args *fa = aux;
534
535 if (!fdc)
536 aprint_normal(" drive %d", fa->fa_drive);
537 return QUIET;
538 }
539
540 /*
541 * Configure several parameters and features on the FDC.
542 * Return 0 on success.
543 */
544 static int
545 fdconf(struct fdc_softc *fdc)
546 {
547 int vroom;
548
549 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10)
550 return -1;
551
552 /*
553 * dumpreg[7] seems to be a motor-off timeout; set it to whatever
554 * the PROM thinks is appropriate.
555 */
556 if ((vroom = fdc->sc_status[7]) == 0)
557 vroom = 0x64;
558
559 /* Configure controller to use FIFO and Implied Seek */
560 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0)
561 return -1;
562 if (fdc_wrfifo(fdc, vroom) != 0)
563 return -1;
564 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0)
565 return -1;
566 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */
567 return -1;
568 /* No result phase for the NE7CMD_CFG command */
569
570 if ((fdc->sc_flags & FDC_82077) != 0) {
571 /* Lock configuration across soft resets. */
572 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 ||
573 fdcresult(fdc) != 1) {
574 #ifdef DEBUG
575 printf("fdconf: CFGLOCK failed");
576 #endif
577 return -1;
578 }
579 }
580
581 return 0;
582 #if 0
583 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 &&
584 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) {
585 if (fdc_debug)
586 printf("[version cmd]");
587 }
588 #endif
589 }
590
591 #ifdef SUN4
592 void
593 fdcattach_mainbus(struct device *parent, struct device *self, void *aux)
594 {
595 struct fdc_softc *fdc = (void *)self;
596 struct mainbus_attach_args *ma = aux;
597
598 fdc->sc_bustag = ma->ma_bustag;
599
600 if (bus_space_map(
601 ma->ma_bustag,
602 ma->ma_paddr,
603 ma->ma_size,
604 BUS_SPACE_MAP_LINEAR,
605 &fdc->sc_handle) != 0) {
606 aprint_error_dev(self, "cannot map registers\n");
607 return;
608 }
609
610 establish_chip_type(fdc,
611 ma->ma_bustag,
612 ma->ma_paddr,
613 ma->ma_size,
614 fdc->sc_handle);
615
616 if (fdcattach(fdc, ma->ma_pri) != 0)
617 bus_space_unmap(ma->ma_bustag, fdc->sc_handle, ma->ma_size);
618 }
619
620 void
621 fdcattach_obio(struct device *parent, struct device *self, void *aux)
622 {
623 struct fdc_softc *fdc = (void *)self;
624 union obio_attach_args *uoba = aux;
625 struct sbus_attach_args *sa = &uoba->uoba_sbus;
626
627 if (sa->sa_nintr == 0) {
628 printf(": no interrupt line configured\n");
629 return;
630 }
631
632 fdc->sc_bustag = sa->sa_bustag;
633
634 if (sbus_bus_map(sa->sa_bustag,
635 sa->sa_slot, sa->sa_offset, sa->sa_size,
636 BUS_SPACE_MAP_LINEAR, &fdc->sc_handle) != 0) {
637 aprint_error_dev(self, "cannot map control registers\n");
638 return;
639 }
640
641 establish_chip_type(fdc,
642 sa->sa_bustag,
643 sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset),
644 sa->sa_size,
645 fdc->sc_handle);
646
647 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) {
648 printf(": no drives attached\n");
649 return;
650 }
651
652 if (fdcattach(fdc, sa->sa_pri) != 0)
653 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size);
654 }
655
656 #elif SUN4U
657
658 void
659 fdcattach_sbus(struct device *parent, struct device *self, void *aux)
660 {
661 struct fdc_softc *fdc = (void *)self;
662 struct sbus_attach_args *sa = aux;
663
664 if (sa->sa_nintr == 0) {
665 printf(": no interrupt line configured\n");
666 return;
667 }
668
669 if (auxio_fd_control(0) != 0) {
670 printf(": can't attach before auxio\n");
671 return;
672 }
673
674 fdc->sc_bustag = sa->sa_bustag;
675
676 if (bus_space_map(sa->sa_bustag, BUS_ADDR(sa->sa_slot, sa->sa_offset),
677 sa->sa_size, 0, &fdc->sc_handle) != 0) {
678 printf(": cannot map control registers\n");
679 return;
680 }
681
682 establish_chip_type(fdc,
683 sa->sa_bustag,
684 BUS_ADDR(sa->sa_slot, sa->sa_offset),
685 sa->sa_size,
686 fdc->sc_handle);
687
688 if (strcmp(prom_getpropstring(sa->sa_node, "status"), "disabled") == 0) {
689 printf(": no drives attached\n");
690 return;
691 }
692
693 if (prom_getproplen(sa->sa_node, "manual") >= 0)
694 fdc->sc_flags |= FDC_NOEJECT;
695
696
697 if (fdcattach(fdc, sa->sa_pri) != 0)
698 bus_space_unmap(sa->sa_bustag, fdc->sc_handle, sa->sa_size);
699 }
700
701 void
702 fdcattach_ebus(struct device *parent, struct device *self, void *aux)
703 {
704 struct fdc_softc *fdc = (void *)self;
705 struct ebus_attach_args *ea = aux;
706 int map_vaddr;
707
708 if (ea->ea_nintr == 0) {
709 printf(": no interrupt line configured\n");
710 return;
711 }
712
713 if (ea->ea_nreg < 3) {
714 printf(": expected 3 registers, only got %d\n",
715 ea->ea_nreg);
716 return;
717 }
718
719 fdc->sc_bustag = ea->ea_bustag;
720
721 if (ea->ea_nvaddr > 0) {
722 sparc_promaddr_to_handle(ea->ea_bustag,
723 ea->ea_vaddr[0], &fdc->sc_handle);
724 map_vaddr = 1;
725 } else if (bus_space_map(fdc->sc_bustag,
726 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
727 ea->ea_reg[0].size, 0, &fdc->sc_handle) == 0) {
728 map_vaddr = 0;
729 } else {
730 printf(": can't map control registers\n");
731 return;
732 }
733
734 establish_chip_type(fdc,
735 fdc->sc_bustag,
736 map_vaddr ? ea->ea_vaddr[0] :
737 EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
738 ea->ea_reg[0].size,
739 fdc->sc_handle);
740
741 fdc->sc_flags |= FDC_EBUS;
742
743 if (prom_getproplen(ea->ea_node, "manual") >= 0)
744 fdc->sc_flags |= FDC_NOEJECT;
745
746 if (fdcattach(fdc, ea->ea_intr[0]) != 0)
747 if (map_vaddr == 0)
748 bus_space_unmap(ea->ea_bustag, fdc->sc_handle,
749 ea->ea_reg[0].size);
750 }
751 #endif
752
753 int
754 fdcattach(struct fdc_softc *fdc, int pri)
755 {
756 struct fdc_attach_args fa;
757 int drive_attached;
758 char code;
759
760 callout_init(&fdc->sc_timo_ch, 0);
761 callout_init(&fdc->sc_intr_ch, 0);
762
763 fdc->sc_state = DEVIDLE;
764 fdc->sc_itask = FDC_ITASK_NONE;
765 fdc->sc_istatus = FDC_ISTATUS_NONE;
766 fdc->sc_flags |= FDC_EIS;
767 TAILQ_INIT(&fdc->sc_drives);
768
769 if ((fdc->sc_flags & FDC_82077) != 0) {
770 fdc->sc_reg_msr = FDREG77_MSR;
771 fdc->sc_reg_fifo = FDREG77_FIFO;
772 fdc->sc_reg_dor = FDREG77_DOR;
773 fdc->sc_reg_dir = FDREG77_DIR;
774 code = '7';
775 fdc->sc_flags |= FDC_NEEDMOTORWAIT;
776 } else {
777 fdc->sc_reg_msr = FDREG72_MSR;
778 fdc->sc_reg_fifo = FDREG72_FIFO;
779 fdc->sc_reg_dor = 0;
780 code = '2';
781 }
782
783 /*
784 * Configure controller; enable FIFO, Implied seek, no POLL mode?.
785 * Note: CFG_EFIFO is active-low, initial threshold value: 8
786 */
787 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK);
788 if (fdconf(fdc) != 0) {
789 printf(": no drives attached\n");
790 return -1;
791 }
792
793 fdc->sc_sicookie = softint_establish(SOFTINT_BIO, fdcswintr, fdc);
794 if (fdc->sc_sicookie == NULL) {
795 aprint_normal("\n");
796 aprint_error_dev(&fdc->sc_dev, "cannot register soft interrupt handler\n");
797 callout_stop(&fdc->sc_timo_ch);
798 callout_stop(&fdc->sc_intr_ch);
799 return -1;
800 }
801 #ifdef SUN4
802 printf(" softpri %d: chip 8207%c\n", IPL_SOFTFDC, code);
803 #elif SUN4U
804 printf(" softpri %d: chip 8207%c", PIL_FDSOFT, code);
805 if (fdc->sc_flags & FDC_NOEJECT)
806 printf(": manual eject");
807 printf("\n");
808 #endif
809
810 #ifdef SUN4
811 fdciop = &fdc->sc_io;
812 if (bus_intr_establish2(fdc->sc_bustag, pri, 0,
813 fdc_c_hwintr, fdc, fdchwintr) == NULL) {
814 #elif SUN4U
815 if (bus_intr_establish(fdc->sc_bustag, pri, IPL_BIO,
816 fdc_c_hwintr, fdc) == NULL) {
817 #endif
818 aprint_normal("\n");
819 aprint_error_dev(&fdc->sc_dev, "cannot register interrupt handler\n");
820 callout_stop(&fdc->sc_timo_ch);
821 callout_stop(&fdc->sc_intr_ch);
822 softint_disestablish(fdc->sc_sicookie);
823 return -1;
824 }
825
826 evcnt_attach_dynamic(&fdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
827 device_xname(&fdc->sc_dev), "intr");
828
829 /* physical limit: four drives per controller. */
830 drive_attached = 0;
831 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
832 fa.fa_deftype = NULL; /* unknown */
833 fa.fa_deftype = &fd_types[0]; /* XXX */
834 if (config_found(&fdc->sc_dev, (void *)&fa, fdprint) != NULL)
835 drive_attached = 1;
836 }
837
838 if (drive_attached == 0) {
839 /* XXX - dis-establish interrupts here */
840 /* return -1; */
841 }
842
843 return 0;
844 }
845
846 int
847 fdmatch(struct device *parent, struct cfdata *match, void *aux)
848 {
849 struct fdc_softc *fdc = (void *)parent;
850 bus_space_tag_t t = fdc->sc_bustag;
851 bus_space_handle_t h = fdc->sc_handle;
852 struct fdc_attach_args *fa = aux;
853 int drive = fa->fa_drive;
854 int n, ok;
855
856 if (drive > 0)
857 /* XXX - for now, punt on more than one drive */
858 return 0;
859
860 if ((fdc->sc_flags & FDC_82077) != 0) {
861 /* select drive and turn on motor */
862 bus_space_write_1(t, h, fdc->sc_reg_dor,
863 drive | FDO_FRST | FDO_MOEN(drive));
864 /* wait for motor to spin up */
865 delay(250000);
866 #ifdef SUN4
867 } else {
868 auxregbisc(AUXIO4C_FDS, 0);
869 #endif
870 }
871 fdc->sc_nstat = 0;
872 fdc_wrfifo(fdc, NE7CMD_RECAL);
873 fdc_wrfifo(fdc, drive);
874
875 /* Wait for recalibration to complete */
876 for (n = 0; n < 10000; n++) {
877 uint8_t v;
878
879 delay(1000);
880 v = bus_space_read_1(t, h, fdc->sc_reg_msr);
881 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) {
882 /* wait a bit longer till device *really* is ready */
883 delay(100000);
884 if (fdc_wrfifo(fdc, NE7CMD_SENSEI))
885 break;
886 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80)
887 /*
888 * Got `invalid command'; we interpret it
889 * to mean that the re-calibrate hasn't in
890 * fact finished yet
891 */
892 continue;
893 break;
894 }
895 }
896 n = fdc->sc_nstat;
897 #ifdef FD_DEBUG
898 if (fdc_debug) {
899 int i;
900 printf("fdprobe: %d stati:", n);
901 for (i = 0; i < n; i++)
902 printf(" 0x%x", fdc->sc_status[i]);
903 printf("\n");
904 }
905 #endif
906 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0;
907
908 /* turn off motor */
909 if ((fdc->sc_flags & FDC_82077) != 0) {
910 /* deselect drive and turn motor off */
911 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS);
912 #ifdef SUN4
913 } else {
914 auxregbisc(0, AUXIO4C_FDS);
915 #endif
916 }
917
918 return ok;
919 }
920
921 /*
922 * Controller is working, and drive responded. Attach it.
923 */
924 void
925 fdattach(struct device *parent, struct device *self, void *aux)
926 {
927 struct fdc_softc *fdc = (void *)parent;
928 struct fd_softc *fd = (void *)self;
929 struct fdc_attach_args *fa = aux;
930 struct fd_type *type = fa->fa_deftype;
931 int drive = fa->fa_drive;
932
933 callout_init(&fd->sc_motoron_ch, 0);
934 callout_init(&fd->sc_motoroff_ch, 0);
935
936 /* XXX Allow `flags' to override device type? */
937
938 if (type)
939 printf(": %s %d cyl, %d head, %d sec\n", type->name,
940 type->cylinders, type->heads, type->sectrac);
941 else
942 printf(": density unknown\n");
943
944 bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER);
945 fd->sc_cylin = -1;
946 fd->sc_drive = drive;
947 fd->sc_deftype = type;
948 fdc->sc_fd[drive] = fd;
949
950 fdc_wrfifo(fdc, NE7CMD_SPECIFY);
951 fdc_wrfifo(fdc, type->steprate);
952 /* XXX head load time == 6ms */
953 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA);
954
955 /*
956 * Initialize and attach the disk structure.
957 */
958 disk_init(&fd->sc_dk, device_xname(&fd->sc_dv), &fddkdriver);
959 disk_attach(&fd->sc_dk);
960
961 /*
962 * Establish a mountroot_hook anyway in case we booted
963 * with RB_ASKNAME and get selected as the boot device.
964 */
965 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv);
966
967 fd_set_properties(fd);
968
969 /* Make sure the drive motor gets turned off at shutdown time. */
970 if (!pmf_device_register1(self, fdsuspend, NULL, fdshutdown))
971 aprint_error_dev(self, "couldn't establish power handler\n");
972 }
973
974 bool fdshutdown(device_t self, int how)
975 {
976 struct fd_softc *fd = device_private(self);
977
978 fd_motor_off(fd);
979 return true;
980 }
981
982 bool fdsuspend(device_t self, pmf_qual_t qual)
983 {
984
985 return fdshutdown(self, boothowto);
986 }
987
988
989 inline struct fd_type *
990 fd_dev_to_type(struct fd_softc *fd, dev_t dev)
991 {
992 int type = FDTYPE(dev);
993
994 if (type > (sizeof(fd_types) / sizeof(fd_types[0])))
995 return NULL;
996 return type ? &fd_types[type - 1] : fd->sc_deftype;
997 }
998
999 void
1000 fdstrategy(struct buf *bp)
1001 {
1002 struct fd_softc *fd;
1003 int sz;
1004 int s;
1005
1006 /* Valid unit, controller, and request? */
1007 fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev));
1008 if (fd == NULL) {
1009 bp->b_error = EINVAL;
1010 goto done;
1011 }
1012
1013 if (bp->b_blkno < 0 ||
1014 (((bp->b_bcount % FD_BSIZE(fd)) != 0 ||
1015 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) &&
1016 (bp->b_flags & B_FORMAT) == 0)) {
1017 bp->b_error = EINVAL;
1018 goto done;
1019 }
1020
1021 /* If it's a null transfer, return immediately. */
1022 if (bp->b_bcount == 0)
1023 goto done;
1024
1025 sz = howmany(bp->b_bcount, DEV_BSIZE);
1026
1027 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) {
1028 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)
1029 - bp->b_blkno;
1030 if (sz == 0) {
1031 /* If exactly at end of disk, return EOF. */
1032 bp->b_resid = bp->b_bcount;
1033 goto done;
1034 }
1035 if (sz < 0) {
1036 /* If past end of disk, return EINVAL. */
1037 bp->b_error = EINVAL;
1038 goto done;
1039 }
1040 /* Otherwise, truncate request. */
1041 bp->b_bcount = sz << DEV_BSHIFT;
1042 }
1043
1044 bp->b_rawblkno = bp->b_blkno;
1045 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) /
1046 (FD_BSIZE(fd) * fd->sc_type->seccyl);
1047
1048 #ifdef FD_DEBUG
1049 if (fdc_debug > 1)
1050 printf("fdstrategy: b_blkno %lld b_bcount %d blkno %lld cylin %d sz %d\n",
1051 (long long)bp->b_blkno, bp->b_bcount,
1052 (long long)fd->sc_blkno, bp->b_cylinder, sz);
1053 #endif
1054
1055 /* Queue transfer on drive, activate drive and controller if idle. */
1056 s = splbio();
1057 bufq_put(fd->sc_q, bp);
1058 callout_stop(&fd->sc_motoroff_ch); /* a good idea */
1059 if (fd->sc_active == 0)
1060 fdstart(fd);
1061 #ifdef DIAGNOSTIC
1062 else {
1063 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv);
1064 if (fdc->sc_state == DEVIDLE) {
1065 printf("fdstrategy: controller inactive\n");
1066 fdcstart(fdc);
1067 }
1068 }
1069 #endif
1070 splx(s);
1071 return;
1072
1073 done:
1074 /* Toss transfer; we're done early. */
1075 biodone(bp);
1076 }
1077
1078 void
1079 fdstart(struct fd_softc *fd)
1080 {
1081 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv);
1082 int active = fdc->sc_drives.tqh_first != 0;
1083
1084 /* Link into controller queue. */
1085 fd->sc_active = 1;
1086 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain);
1087
1088 /* If controller not already active, start it. */
1089 if (!active)
1090 fdcstart(fdc);
1091 }
1092
1093 void
1094 fdfinish(struct fd_softc *fd, struct buf *bp)
1095 {
1096 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv);
1097
1098 /*
1099 * Move this drive to the end of the queue to give others a `fair'
1100 * chance. We only force a switch if N operations are completed while
1101 * another drive is waiting to be serviced, since there is a long motor
1102 * startup delay whenever we switch.
1103 */
1104 (void)bufq_get(fd->sc_q);
1105 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) {
1106 fd->sc_ops = 0;
1107 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain);
1108 if (bufq_peek(fd->sc_q) != NULL) {
1109 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain);
1110 } else
1111 fd->sc_active = 0;
1112 }
1113 bp->b_resid = fd->sc_bcount;
1114 fd->sc_skip = 0;
1115
1116 biodone(bp);
1117 /* turn off motor 5s from now */
1118 callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd);
1119 fdc->sc_state = DEVIDLE;
1120 }
1121
1122 void
1123 fdc_reset(struct fdc_softc *fdc)
1124 {
1125 bus_space_tag_t t = fdc->sc_bustag;
1126 bus_space_handle_t h = fdc->sc_handle;
1127
1128 if ((fdc->sc_flags & FDC_82077) != 0) {
1129 bus_space_write_1(t, h, fdc->sc_reg_dor,
1130 FDO_FDMAEN | FDO_MOEN(0));
1131 }
1132
1133 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET);
1134 delay(10);
1135 bus_space_write_1(t, h, fdc->sc_reg_drs, 0);
1136
1137 if ((fdc->sc_flags & FDC_82077) != 0) {
1138 bus_space_write_1(t, h, fdc->sc_reg_dor,
1139 FDO_FRST | FDO_FDMAEN | FDO_DS);
1140 }
1141 #ifdef FD_DEBUG
1142 if (fdc_debug)
1143 printf("fdc reset\n");
1144 #endif
1145 }
1146
1147 void
1148 fd_set_motor(struct fdc_softc *fdc)
1149 {
1150 struct fd_softc *fd;
1151 u_char status;
1152 int n;
1153
1154 if ((fdc->sc_flags & FDC_82077) != 0) {
1155 status = FDO_FRST | FDO_FDMAEN;
1156 if ((fd = fdc->sc_drives.tqh_first) != NULL)
1157 status |= fd->sc_drive;
1158
1159 for (n = 0; n < 4; n++)
1160 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR))
1161 status |= FDO_MOEN(n);
1162 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle,
1163 fdc->sc_reg_dor, status);
1164 #ifdef SUN4
1165 } else {
1166
1167 for (n = 0; n < 4; n++) {
1168 if ((fd = fdc->sc_fd[n]) != NULL &&
1169 (fd->sc_flags & FD_MOTOR) != 0) {
1170 auxregbisc(AUXIO4C_FDS, 0);
1171 return;
1172 }
1173 }
1174 auxregbisc(0, AUXIO4C_FDS);
1175 #endif
1176 }
1177 }
1178
1179 void
1180 fd_motor_off(void *arg)
1181 {
1182 struct fd_softc *fd = arg;
1183 int s;
1184
1185 s = splbio();
1186 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT);
1187 fd_set_motor((struct fdc_softc *)device_parent(&fd->sc_dv));
1188 splx(s);
1189 }
1190
1191 void
1192 fd_motor_on(void *arg)
1193 {
1194 struct fd_softc *fd = arg;
1195 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv);
1196 int s;
1197
1198 s = splbio();
1199 fd->sc_flags &= ~FD_MOTOR_WAIT;
1200 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT))
1201 (void)fdcstate(fdc);
1202 splx(s);
1203 }
1204
1205 /*
1206 * Get status bytes off the FDC after a command has finished
1207 * Returns the number of status bytes read; -1 on error.
1208 * The return value is also stored in `sc_nstat'.
1209 */
1210 int
1211 fdcresult(struct fdc_softc *fdc)
1212 {
1213 bus_space_tag_t t = fdc->sc_bustag;
1214 bus_space_handle_t h = fdc->sc_handle;
1215 int j, n = 0;
1216
1217 for (j = 10000; j; j--) {
1218 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr);
1219 v &= (NE7_DIO | NE7_RQM | NE7_CB);
1220 if (v == NE7_RQM)
1221 return fdc->sc_nstat = n;
1222 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) {
1223 if (n >= sizeof(fdc->sc_status)) {
1224 log(LOG_ERR, "fdcresult: overrun\n");
1225 return -1;
1226 }
1227 fdc->sc_status[n++] =
1228 bus_space_read_1(t, h, fdc->sc_reg_fifo);
1229 } else
1230 delay(1);
1231 }
1232
1233 log(LOG_ERR, "fdcresult: timeout\n");
1234 return fdc->sc_nstat = -1;
1235 }
1236
1237 /*
1238 * Write a command byte to the FDC.
1239 * Returns 0 on success; -1 on failure (i.e. timeout)
1240 */
1241 int
1242 fdc_wrfifo(struct fdc_softc *fdc, uint8_t x)
1243 {
1244 bus_space_tag_t t = fdc->sc_bustag;
1245 bus_space_handle_t h = fdc->sc_handle;
1246 int i;
1247
1248 for (i = 100000; i-- > 0;) {
1249 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr);
1250 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) {
1251 /* The chip is ready */
1252 bus_space_write_1(t, h, fdc->sc_reg_fifo, x);
1253 return 0;
1254 }
1255 delay(1);
1256 }
1257 return -1;
1258 }
1259
1260 int
1261 fdc_diskchange(struct fdc_softc *fdc)
1262 {
1263
1264 #ifdef SUN4
1265 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) {
1266 #endif
1267 bus_space_tag_t t = fdc->sc_bustag;
1268 bus_space_handle_t h = fdc->sc_handle;
1269 uint8_t v = bus_space_read_1(t, h, fdc->sc_reg_dir);
1270 return (v & FDI_DCHG) != 0;
1271 #ifdef SUN4
1272 } else if (CPU_ISSUN4C) {
1273 return (*AUXIO4C_REG & AUXIO4C_FDC) != 0;
1274 }
1275 return 0;
1276 #endif
1277 }
1278
1279 int
1280 fdopen(dev_t dev, int flags, int fmt, struct lwp *l)
1281 {
1282 int pmask;
1283 struct fd_softc *fd;
1284 struct fd_type *type;
1285
1286 fd = device_lookup_private(&fd_cd, FDUNIT(dev));
1287 if (fd == NULL)
1288 return ENXIO;
1289 type = fd_dev_to_type(fd, dev);
1290 if (type == NULL)
1291 return ENXIO;
1292
1293 if ((fd->sc_flags & FD_OPEN) != 0 &&
1294 fd->sc_type != type)
1295 return EBUSY;
1296
1297 fd->sc_type = type;
1298 fd->sc_cylin = -1;
1299 fd->sc_flags |= FD_OPEN;
1300
1301 /*
1302 * Only update the disklabel if we're not open anywhere else.
1303 */
1304 if (fd->sc_dk.dk_openmask == 0)
1305 fdgetdisklabel(dev);
1306
1307 pmask = (1 << DISKPART(dev));
1308
1309 switch (fmt) {
1310 case S_IFCHR:
1311 fd->sc_dk.dk_copenmask |= pmask;
1312 break;
1313
1314 case S_IFBLK:
1315 fd->sc_dk.dk_bopenmask |= pmask;
1316 break;
1317 }
1318 fd->sc_dk.dk_openmask =
1319 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask;
1320
1321 return 0;
1322 }
1323
1324 int
1325 fdclose(dev_t dev, int flags, int fmt, struct lwp *l)
1326 {
1327 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev));
1328 int pmask = (1 << DISKPART(dev));
1329
1330 fd->sc_flags &= ~FD_OPEN;
1331 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT);
1332
1333 switch (fmt) {
1334 case S_IFCHR:
1335 fd->sc_dk.dk_copenmask &= ~pmask;
1336 break;
1337
1338 case S_IFBLK:
1339 fd->sc_dk.dk_bopenmask &= ~pmask;
1340 break;
1341 }
1342 fd->sc_dk.dk_openmask =
1343 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask;
1344
1345 return 0;
1346 }
1347
1348 int
1349 fdread(dev_t dev, struct uio *uio, int flag)
1350 {
1351
1352 return physio(fdstrategy, NULL, dev, B_READ, minphys, uio);
1353 }
1354
1355 int
1356 fdwrite(dev_t dev, struct uio *uio, int flag)
1357 {
1358
1359 return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio);
1360 }
1361
1362 void
1363 fdcstart(struct fdc_softc *fdc)
1364 {
1365
1366 #ifdef DIAGNOSTIC
1367 /* only got here if controller's drive queue was inactive; should
1368 be in idle state */
1369 if (fdc->sc_state != DEVIDLE) {
1370 printf("fdcstart: not idle\n");
1371 return;
1372 }
1373 #endif
1374 (void)fdcstate(fdc);
1375 }
1376
1377 static void
1378 fdcpstatus(struct fdc_softc *fdc)
1379 {
1380 char bits[64];
1381
1382 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]);
1383 printf(" (st0 %s", bits);
1384 snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]);
1385 printf(" st1 %s", bits);
1386 snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]);
1387 printf(" st2 %s", bits);
1388 printf(" cyl %d head %d sec %d)\n",
1389 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]);
1390 }
1391
1392 void
1393 fdcstatus(struct fdc_softc *fdc, const char *s)
1394 {
1395 struct fd_softc *fd = fdc->sc_drives.tqh_first;
1396 int n;
1397 char bits[64];
1398
1399 /* Just print last status */
1400 n = fdc->sc_nstat;
1401
1402 #if 0
1403 /*
1404 * A 82072 seems to return <invalid command> on
1405 * gratuitous Sense Interrupt commands.
1406 */
1407 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) {
1408 fdc_wrfifo(fdc, NE7CMD_SENSEI);
1409 (void)fdcresult(fdc);
1410 n = 2;
1411 }
1412 #endif
1413
1414 printf("%s: %s: state %d",
1415 fd ? device_xname(&fd->sc_dv) : "fdc", s, fdc->sc_state);
1416
1417 switch (n) {
1418 case 0:
1419 printf("\n");
1420 break;
1421 case 2:
1422 snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]);
1423 printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]);
1424 break;
1425 case 7:
1426 fdcpstatus(fdc);
1427 break;
1428 #ifdef DIAGNOSTIC
1429 default:
1430 printf(" fdcstatus: weird size: %d\n", n);
1431 break;
1432 #endif
1433 }
1434 }
1435
1436 void
1437 fdctimeout(void *arg)
1438 {
1439 struct fdc_softc *fdc = arg;
1440 struct fd_softc *fd;
1441 int s;
1442
1443 s = splbio();
1444 fd = fdc->sc_drives.tqh_first;
1445 if (fd == NULL) {
1446 aprint_error_dev(&fdc->sc_dev, "timeout but no I/O pending: state %d, istatus=%d\n",
1447 fdc->sc_state, fdc->sc_istatus);
1448 fdc->sc_state = DEVIDLE;
1449 goto out;
1450 }
1451
1452 if (bufq_peek(fd->sc_q) != NULL)
1453 fdc->sc_state++;
1454 else
1455 fdc->sc_state = DEVIDLE;
1456
1457 (void)fdcstate(fdc);
1458 out:
1459 splx(s);
1460
1461 }
1462
1463 void
1464 fdcpseudointr(void *arg)
1465 {
1466 struct fdc_softc *fdc = arg;
1467 int s;
1468
1469 /* Just ensure it has the right spl. */
1470 s = splbio();
1471 (void)fdcstate(fdc);
1472 splx(s);
1473 }
1474
1475
1476 /*
1477 * hardware interrupt entry point: used only if no `fast trap' * (in-window)
1478 * handler is available. Unfortunately, we have no reliable way to
1479 * determine that the interrupt really came from the floppy controller;
1480 * just hope that the other devices that share this interrupt level
1481 * can do better..
1482 */
1483 int
1484 fdc_c_hwintr(void *arg)
1485 {
1486 struct fdc_softc *fdc = arg;
1487 bus_space_tag_t t = fdc->sc_bustag;
1488 bus_space_handle_t h = fdc->sc_handle;
1489
1490 switch (fdc->sc_itask) {
1491 case FDC_ITASK_NONE:
1492 return 0;
1493 case FDC_ITASK_SENSEI:
1494 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) == -1)
1495 fdc->sc_istatus = FDC_ISTATUS_ERROR;
1496 else
1497 fdc->sc_istatus = FDC_ISTATUS_DONE;
1498 softint_schedule(fdc->sc_sicookie);
1499 return 1;
1500 case FDC_ITASK_RESULT:
1501 if (fdcresult(fdc) == -1)
1502 fdc->sc_istatus = FDC_ISTATUS_ERROR;
1503 else
1504 fdc->sc_istatus = FDC_ISTATUS_DONE;
1505 softint_schedule(fdc->sc_sicookie);
1506 return 1;
1507 case FDC_ITASK_DMA:
1508 /* Proceed with pseudo-DMA below */
1509 break;
1510 default:
1511 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask);
1512 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS;
1513 softint_schedule(fdc->sc_sicookie);
1514 return 1;
1515 }
1516
1517 /*
1518 * Pseudo DMA in progress
1519 */
1520 for (;;) {
1521 uint8_t msr;
1522
1523 msr = bus_space_read_1(t, h, fdc->sc_reg_msr);
1524
1525 if ((msr & NE7_RQM) == 0)
1526 /* That's all this round. */
1527 break;
1528
1529 if ((msr & NE7_NDM) == 0) {
1530 /* Execution phase finished, get result. */
1531 fdcresult(fdc);
1532 fdc->sc_istatus = FDC_ISTATUS_DONE;
1533 softint_schedule(fdc->sc_sicookie);
1534 break;
1535 }
1536
1537 if (fdc->sc_tc == 0)
1538 /* For some reason the controller wants to transfer
1539 more data then what we want to transfer. */
1540 panic("fdc: overrun");
1541
1542 /* Another byte can be transferred */
1543 if ((msr & NE7_DIO) != 0)
1544 *fdc->sc_data =
1545 bus_space_read_1(t, h, fdc->sc_reg_fifo);
1546 else
1547 bus_space_write_1(t, h, fdc->sc_reg_fifo,
1548 *fdc->sc_data);
1549
1550 fdc->sc_data++;
1551 if (--fdc->sc_tc == 0) {
1552 FTC_FLIP;
1553 break;
1554 }
1555 }
1556 return 1;
1557 }
1558
1559 void
1560 fdcswintr(void *arg)
1561 {
1562 struct fdc_softc *fdc = arg;
1563
1564 if (fdc->sc_istatus == FDC_ISTATUS_NONE)
1565 /* This (software) interrupt is not for us */
1566 return;
1567
1568 switch (fdc->sc_istatus) {
1569 case FDC_ISTATUS_ERROR:
1570 printf("fdc: ierror status: state %d\n", fdc->sc_state);
1571 break;
1572 case FDC_ISTATUS_SPURIOUS:
1573 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state);
1574 break;
1575 }
1576
1577 fdcstate(fdc);
1578 return;
1579 }
1580
1581 int
1582 fdcstate(struct fdc_softc *fdc)
1583 {
1584
1585 #define st0 fdc->sc_status[0]
1586 #define st1 fdc->sc_status[1]
1587 #define cyl fdc->sc_status[1]
1588 #define FDC_WRFIFO(fdc, c) do { \
1589 if (fdc_wrfifo(fdc, (c))) { \
1590 goto xxx; \
1591 } \
1592 } while(0)
1593
1594 struct fd_softc *fd;
1595 struct buf *bp;
1596 int read, head, sec, nblks;
1597 struct fd_type *type;
1598 struct ne7_fd_formb *finfo = NULL;
1599
1600 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) {
1601 /* Prevent loop if the reset sequence produces errors */
1602 if (fdc->sc_state != RESETCOMPLETE &&
1603 fdc->sc_state != RECALWAIT &&
1604 fdc->sc_state != RECALCOMPLETE)
1605 fdc->sc_state = DORESET;
1606 }
1607
1608 /* Clear I task/status field */
1609 fdc->sc_istatus = FDC_ISTATUS_NONE;
1610 fdc->sc_itask = FDC_ITASK_NONE;
1611
1612 loop:
1613 /* Is there a drive for the controller to do a transfer with? */
1614 fd = fdc->sc_drives.tqh_first;
1615 if (fd == NULL) {
1616 fdc->sc_state = DEVIDLE;
1617 return 0;
1618 }
1619
1620 /* Is there a transfer to this drive? If not, deactivate drive. */
1621 bp = bufq_peek(fd->sc_q);
1622 if (bp == NULL) {
1623 fd->sc_ops = 0;
1624 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain);
1625 fd->sc_active = 0;
1626 goto loop;
1627 }
1628
1629 if (bp->b_flags & B_FORMAT)
1630 finfo = (struct ne7_fd_formb *)bp->b_data;
1631
1632 switch (fdc->sc_state) {
1633 case DEVIDLE:
1634 fdc->sc_errors = 0;
1635 fd->sc_skip = 0;
1636 fd->sc_bcount = bp->b_bcount;
1637 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd);
1638 callout_stop(&fd->sc_motoroff_ch);
1639 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) {
1640 fdc->sc_state = MOTORWAIT;
1641 return 1;
1642 }
1643 if ((fd->sc_flags & FD_MOTOR) == 0) {
1644 /* Turn on the motor, being careful about pairing. */
1645 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1];
1646 if (ofd && ofd->sc_flags & FD_MOTOR) {
1647 callout_stop(&ofd->sc_motoroff_ch);
1648 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT);
1649 }
1650 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT;
1651 fd_set_motor(fdc);
1652 fdc->sc_state = MOTORWAIT;
1653 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/
1654 /* Allow .25s for motor to stabilize. */
1655 callout_reset(&fd->sc_motoron_ch, hz / 4,
1656 fd_motor_on, fd);
1657 } else {
1658 fd->sc_flags &= ~FD_MOTOR_WAIT;
1659 goto loop;
1660 }
1661 return 1;
1662 }
1663 /* Make sure the right drive is selected. */
1664 fd_set_motor(fdc);
1665
1666 if (fdc_diskchange(fdc))
1667 goto dodskchg;
1668
1669 /*FALLTHROUGH*/
1670 case DOSEEK:
1671 doseek:
1672 if ((fdc->sc_flags & FDC_EIS) &&
1673 (bp->b_flags & B_FORMAT) == 0) {
1674 fd->sc_cylin = bp->b_cylinder;
1675 /* We use implied seek */
1676 goto doio;
1677 }
1678
1679 if (fd->sc_cylin == bp->b_cylinder)
1680 goto doio;
1681
1682 fd->sc_cylin = -1;
1683 fdc->sc_state = SEEKWAIT;
1684 fdc->sc_nstat = 0;
1685
1686 iostat_seek(fd->sc_dk.dk_stats);
1687
1688 disk_busy(&fd->sc_dk);
1689 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc);
1690
1691 /* specify command */
1692 FDC_WRFIFO(fdc, NE7CMD_SPECIFY);
1693 FDC_WRFIFO(fdc, fd->sc_type->steprate);
1694 /* XXX head load time == 6ms */
1695 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA);
1696
1697 fdc->sc_itask = FDC_ITASK_SENSEI;
1698 /* seek function */
1699 FDC_WRFIFO(fdc, NE7CMD_SEEK);
1700 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */
1701 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step);
1702 return 1;
1703
1704 case DODSKCHG:
1705 dodskchg:
1706 /*
1707 * Disk change: force a seek operation by going to cyl 1
1708 * followed by a recalibrate.
1709 */
1710 disk_busy(&fd->sc_dk);
1711 callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc);
1712 fd->sc_cylin = -1;
1713 fdc->sc_nstat = 0;
1714 fdc->sc_state = DSKCHGWAIT;
1715
1716 fdc->sc_itask = FDC_ITASK_SENSEI;
1717 /* seek function */
1718 FDC_WRFIFO(fdc, NE7CMD_SEEK);
1719 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */
1720 FDC_WRFIFO(fdc, 1 * fd->sc_type->step);
1721 return 1;
1722
1723 case DSKCHGWAIT:
1724 callout_stop(&fdc->sc_timo_ch);
1725 disk_unbusy(&fd->sc_dk, 0, 0);
1726 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 ||
1727 cyl != 1 * fd->sc_type->step) {
1728 fdcstatus(fdc, "dskchg seek failed");
1729 fdc->sc_state = DORESET;
1730 } else
1731 fdc->sc_state = DORECAL;
1732
1733 if (fdc_diskchange(fdc)) {
1734 aprint_error_dev(&fdc->sc_dev, "cannot clear disk change status\n");
1735 fdc->sc_state = DORESET;
1736 }
1737 goto loop;
1738
1739 case DOIO:
1740 doio:
1741 if (finfo != NULL)
1742 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) -
1743 (char *)finfo;
1744 type = fd->sc_type;
1745 sec = fd->sc_blkno % type->seccyl;
1746 nblks = type->seccyl - sec;
1747 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd));
1748 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd));
1749 fd->sc_nblks = nblks;
1750 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd);
1751 head = sec / type->sectrac;
1752 sec -= head * type->sectrac;
1753 #ifdef DIAGNOSTIC
1754 {int block;
1755 block = (fd->sc_cylin * type->heads + head) * type->sectrac +
1756 sec;
1757 if (block != fd->sc_blkno) {
1758 printf("fdcintr: block %d != blkno %d\n", block,
1759 (int)fd->sc_blkno);
1760 #ifdef DDB
1761 Debugger();
1762 #endif
1763 }}
1764 #endif
1765 read = bp->b_flags & B_READ;
1766
1767 /* Setup for pseudo DMA */
1768 fdc->sc_data = (char *)bp->b_data + fd->sc_skip;
1769 fdc->sc_tc = fd->sc_nbytes;
1770
1771 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle,
1772 fdc->sc_reg_drs, type->rate);
1773 #ifdef FD_DEBUG
1774 if (fdc_debug > 1)
1775 printf("fdcstate: doio: %s drive %d "
1776 "track %d head %d sec %d nblks %d\n",
1777 finfo ? "format" :
1778 (read ? "read" : "write"),
1779 fd->sc_drive, fd->sc_cylin, head, sec, nblks);
1780 #endif
1781 fdc->sc_state = IOCOMPLETE;
1782 fdc->sc_itask = FDC_ITASK_DMA;
1783 fdc->sc_nstat = 0;
1784
1785 disk_busy(&fd->sc_dk);
1786
1787 /* allow 3 seconds for operation */
1788 callout_reset(&fdc->sc_timo_ch, 3 * hz, fdctimeout, fdc);
1789
1790 if (finfo != NULL) {
1791 /* formatting */
1792 FDC_WRFIFO(fdc, NE7CMD_FORMAT);
1793 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive);
1794 FDC_WRFIFO(fdc, finfo->fd_formb_secshift);
1795 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs);
1796 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen);
1797 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte);
1798 } else {
1799 if (read)
1800 FDC_WRFIFO(fdc, NE7CMD_READ);
1801 else
1802 FDC_WRFIFO(fdc, NE7CMD_WRITE);
1803 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive);
1804 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/
1805 FDC_WRFIFO(fdc, head);
1806 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/
1807 FDC_WRFIFO(fdc, type->secsize); /*sector size*/
1808 FDC_WRFIFO(fdc, type->sectrac); /*secs/track*/
1809 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/
1810 FDC_WRFIFO(fdc, type->datalen); /*data length*/
1811 }
1812
1813 return 1; /* will return later */
1814
1815 case SEEKWAIT:
1816 callout_stop(&fdc->sc_timo_ch);
1817 fdc->sc_state = SEEKCOMPLETE;
1818 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) {
1819 /* allow 1/50 second for heads to settle */
1820 callout_reset(&fdc->sc_intr_ch, hz / 50,
1821 fdcpseudointr, fdc);
1822 return 1; /* will return later */
1823 }
1824 /*FALLTHROUGH*/
1825 case SEEKCOMPLETE:
1826 /* no data on seek */
1827 disk_unbusy(&fd->sc_dk, 0, 0);
1828
1829 /* Make sure seek really happened. */
1830 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 ||
1831 cyl != bp->b_cylinder * fd->sc_type->step) {
1832 #ifdef FD_DEBUG
1833 if (fdc_debug)
1834 fdcstatus(fdc, "seek failed");
1835 #endif
1836 fdcretry(fdc);
1837 goto loop;
1838 }
1839 fd->sc_cylin = bp->b_cylinder;
1840 goto doio;
1841
1842 case IOTIMEDOUT:
1843 /*
1844 * Try to abort the I/O operation without resetting
1845 * the chip first. Poke TC and arrange to pick up
1846 * the timed out I/O command's status.
1847 */
1848 fdc->sc_itask = FDC_ITASK_RESULT;
1849 fdc->sc_state = IOCLEANUPWAIT;
1850 fdc->sc_nstat = 0;
1851 /* 1/10 second should be enough */
1852 callout_reset(&fdc->sc_timo_ch, hz / 10, fdctimeout, fdc);
1853 FTC_FLIP;
1854 return 1;
1855
1856 case IOCLEANUPTIMEDOUT:
1857 case SEEKTIMEDOUT:
1858 case RECALTIMEDOUT:
1859 case RESETTIMEDOUT:
1860 case DSKCHGTIMEDOUT:
1861 fdcstatus(fdc, "timeout");
1862
1863 /* All other timeouts always roll through to a chip reset */
1864 fdcretry(fdc);
1865
1866 /* Force reset, no matter what fdcretry() says */
1867 fdc->sc_state = DORESET;
1868 goto loop;
1869
1870 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */
1871 callout_stop(&fdc->sc_timo_ch);
1872 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid),
1873 (bp->b_flags & B_READ));
1874 fdcretry(fdc);
1875 goto loop;
1876
1877 case IOCOMPLETE: /* IO DONE, post-analyze */
1878 callout_stop(&fdc->sc_timo_ch);
1879
1880 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid),
1881 (bp->b_flags & B_READ));
1882
1883 if (fdc->sc_nstat != 7 || st1 != 0 ||
1884 ((st0 & 0xf8) != 0 &&
1885 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) {
1886 #ifdef FD_DEBUG
1887 if (fdc_debug) {
1888 fdcstatus(fdc, bp->b_flags & B_READ ?
1889 "read failed" : "write failed");
1890 printf("blkno %lld nblks %d nstat %d tc %d\n",
1891 (long long)fd->sc_blkno, fd->sc_nblks,
1892 fdc->sc_nstat, fdc->sc_tc);
1893 }
1894 #endif
1895 if (fdc->sc_nstat == 7 &&
1896 (st1 & ST1_OVERRUN) == ST1_OVERRUN) {
1897
1898 /*
1899 * Silently retry overruns if no other
1900 * error bit is set. Adjust threshold.
1901 */
1902 int thr = fdc->sc_cfg & CFG_THRHLD_MASK;
1903 if (thr < 15) {
1904 thr++;
1905 fdc->sc_cfg &= ~CFG_THRHLD_MASK;
1906 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK);
1907 #ifdef FD_DEBUG
1908 if (fdc_debug)
1909 printf("fdc: %d -> threshold\n",
1910 thr);
1911 #endif
1912 fdconf(fdc);
1913 fdc->sc_overruns = 0;
1914 }
1915 if (++fdc->sc_overruns < 3) {
1916 fdc->sc_state = DOIO;
1917 goto loop;
1918 }
1919 }
1920 fdcretry(fdc);
1921 goto loop;
1922 }
1923 if (fdc->sc_errors) {
1924 diskerr(bp, "fd", "soft error", LOG_PRINTF,
1925 fd->sc_skip / FD_BSIZE(fd),
1926 (struct disklabel *)NULL);
1927 printf("\n");
1928 fdc->sc_errors = 0;
1929 } else {
1930 if (--fdc->sc_overruns < -20) {
1931 int thr = fdc->sc_cfg & CFG_THRHLD_MASK;
1932 if (thr > 0) {
1933 thr--;
1934 fdc->sc_cfg &= ~CFG_THRHLD_MASK;
1935 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK);
1936 #ifdef FD_DEBUG
1937 if (fdc_debug)
1938 printf("fdc: %d -> threshold\n",
1939 thr);
1940 #endif
1941 fdconf(fdc);
1942 }
1943 fdc->sc_overruns = 0;
1944 }
1945 }
1946 fd->sc_blkno += fd->sc_nblks;
1947 fd->sc_skip += fd->sc_nbytes;
1948 fd->sc_bcount -= fd->sc_nbytes;
1949 if (finfo == NULL && fd->sc_bcount > 0) {
1950 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl;
1951 goto doseek;
1952 }
1953 fdfinish(fd, bp);
1954 goto loop;
1955
1956 case DORESET:
1957 /* try a reset, keep motor on */
1958 fd_set_motor(fdc);
1959 delay(100);
1960 fdc->sc_nstat = 0;
1961 fdc->sc_itask = FDC_ITASK_SENSEI;
1962 fdc->sc_state = RESETCOMPLETE;
1963 callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc);
1964 fdc_reset(fdc);
1965 return 1; /* will return later */
1966
1967 case RESETCOMPLETE:
1968 callout_stop(&fdc->sc_timo_ch);
1969 fdconf(fdc);
1970
1971 /* FALLTHROUGH */
1972 case DORECAL:
1973 fdc->sc_state = RECALWAIT;
1974 fdc->sc_itask = FDC_ITASK_SENSEI;
1975 fdc->sc_nstat = 0;
1976 callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc);
1977 /* recalibrate function */
1978 FDC_WRFIFO(fdc, NE7CMD_RECAL);
1979 FDC_WRFIFO(fdc, fd->sc_drive);
1980 return 1; /* will return later */
1981
1982 case RECALWAIT:
1983 callout_stop(&fdc->sc_timo_ch);
1984 fdc->sc_state = RECALCOMPLETE;
1985 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) {
1986 /* allow 1/30 second for heads to settle */
1987 callout_reset(&fdc->sc_intr_ch, hz / 30,
1988 fdcpseudointr, fdc);
1989 return 1; /* will return later */
1990 }
1991
1992 case RECALCOMPLETE:
1993 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) {
1994 #ifdef FD_DEBUG
1995 if (fdc_debug)
1996 fdcstatus(fdc, "recalibrate failed");
1997 #endif
1998 fdcretry(fdc);
1999 goto loop;
2000 }
2001 fd->sc_cylin = 0;
2002 goto doseek;
2003
2004 case MOTORWAIT:
2005 if (fd->sc_flags & FD_MOTOR_WAIT)
2006 return 1; /* time's not up yet */
2007 goto doseek;
2008
2009 default:
2010 fdcstatus(fdc, "stray interrupt");
2011 return 1;
2012 }
2013 #ifdef DIAGNOSTIC
2014 panic("fdcintr: impossible");
2015 #endif
2016
2017 xxx:
2018 /*
2019 * We get here if the chip locks up in FDC_WRFIFO()
2020 * Cancel any operation and schedule a reset
2021 */
2022 callout_stop(&fdc->sc_timo_ch);
2023 fdcretry(fdc);
2024 fdc->sc_state = DORESET;
2025 goto loop;
2026
2027 #undef st0
2028 #undef st1
2029 #undef cyl
2030 }
2031
2032 void
2033 fdcretry(struct fdc_softc *fdc)
2034 {
2035 struct fd_softc *fd;
2036 struct buf *bp;
2037 int error = EIO;
2038
2039 fd = fdc->sc_drives.tqh_first;
2040 bp = bufq_peek(fd->sc_q);
2041
2042 fdc->sc_overruns = 0;
2043 if (fd->sc_opts & FDOPT_NORETRY)
2044 goto fail;
2045
2046 switch (fdc->sc_errors) {
2047 case 0:
2048 if (fdc->sc_nstat == 7 &&
2049 (fdc->sc_status[0] & 0xd8) == 0x40 &&
2050 (fdc->sc_status[1] & 0x2) == 0x2) {
2051 aprint_error_dev(&fdc->sc_dev, "read-only medium\n");
2052 error = EROFS;
2053 goto failsilent;
2054 }
2055 /* try again */
2056 fdc->sc_state =
2057 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK;
2058 break;
2059
2060 case 1: case 2: case 3:
2061 /* didn't work; try recalibrating */
2062 fdc->sc_state = DORECAL;
2063 break;
2064
2065 case 4:
2066 if (fdc->sc_nstat == 7 &&
2067 fdc->sc_status[0] == 0 &&
2068 fdc->sc_status[1] == 0 &&
2069 fdc->sc_status[2] == 0) {
2070 /*
2071 * We've retried a few times and we've got
2072 * valid status and all three status bytes
2073 * are zero. Assume this condition is the
2074 * result of no disk loaded into the drive.
2075 */
2076 aprint_error_dev(&fdc->sc_dev, "no medium?\n");
2077 error = ENODEV;
2078 goto failsilent;
2079 }
2080
2081 /* still no go; reset the bastard */
2082 fdc->sc_state = DORESET;
2083 break;
2084
2085 default:
2086 fail:
2087 if ((fd->sc_opts & FDOPT_SILENT) == 0) {
2088 diskerr(bp, "fd", "hard error", LOG_PRINTF,
2089 fd->sc_skip / FD_BSIZE(fd),
2090 (struct disklabel *)NULL);
2091 printf("\n");
2092 fdcstatus(fdc, "controller status");
2093 }
2094
2095 failsilent:
2096 bp->b_error = error;
2097 fdfinish(fd, bp);
2098 }
2099 fdc->sc_errors++;
2100 }
2101
2102 int
2103 fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
2104 {
2105 struct fd_softc *fd;
2106 struct fdc_softc *fdc;
2107 struct fdformat_parms *form_parms;
2108 struct fdformat_cmd *form_cmd;
2109 struct ne7_fd_formb *fd_formb;
2110 int il[FD_MAX_NSEC + 1];
2111 int unit;
2112 int i, j;
2113 int error;
2114
2115 unit = FDUNIT(dev);
2116 if (unit >= fd_cd.cd_ndevs)
2117 return ENXIO;
2118
2119 fd = device_lookup_private(&fd_cd, FDUNIT(dev));
2120 fdc = device_private(device_parent(&fd->sc_dv));
2121
2122 switch (cmd) {
2123 case DIOCGDINFO:
2124 *(struct disklabel *)addr = *(fd->sc_dk.dk_label);
2125 return 0;
2126
2127 case DIOCWLABEL:
2128 if ((flag & FWRITE) == 0)
2129 return EBADF;
2130 /* XXX do something */
2131 return 0;
2132
2133 case DIOCWDINFO:
2134 if ((flag & FWRITE) == 0)
2135 return EBADF;
2136
2137 error = setdisklabel(fd->sc_dk.dk_label,
2138 (struct disklabel *)addr, 0,
2139 fd->sc_dk.dk_cpulabel);
2140 if (error)
2141 return error;
2142
2143 error = writedisklabel(dev, fdstrategy,
2144 fd->sc_dk.dk_label,
2145 fd->sc_dk.dk_cpulabel);
2146 return error;
2147
2148 case DIOCLOCK:
2149 /*
2150 * Nothing to do here, really.
2151 */
2152 return 0;
2153
2154 case DIOCEJECT:
2155 if (*(int *)addr == 0) {
2156 int part = DISKPART(dev);
2157 /*
2158 * Don't force eject: check that we are the only
2159 * partition open. If so, unlock it.
2160 */
2161 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 ||
2162 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask !=
2163 fd->sc_dk.dk_openmask) {
2164 return EBUSY;
2165 }
2166 }
2167 /* FALLTHROUGH */
2168 case ODIOCEJECT:
2169 if (fdc->sc_flags & FDC_NOEJECT)
2170 return EINVAL;
2171 fd_do_eject(fd);
2172 return 0;
2173
2174 case FDIOCGETFORMAT:
2175 form_parms = (struct fdformat_parms *)addr;
2176 form_parms->fdformat_version = FDFORMAT_VERSION;
2177 form_parms->nbps = 128 * (1 << fd->sc_type->secsize);
2178 form_parms->ncyl = fd->sc_type->cylinders;
2179 form_parms->nspt = fd->sc_type->sectrac;
2180 form_parms->ntrk = fd->sc_type->heads;
2181 form_parms->stepspercyl = fd->sc_type->step;
2182 form_parms->gaplen = fd->sc_type->gap2;
2183 form_parms->fillbyte = fd->sc_type->fillbyte;
2184 form_parms->interleave = fd->sc_type->interleave;
2185 switch (fd->sc_type->rate) {
2186 case FDC_500KBPS:
2187 form_parms->xfer_rate = 500 * 1024;
2188 break;
2189 case FDC_300KBPS:
2190 form_parms->xfer_rate = 300 * 1024;
2191 break;
2192 case FDC_250KBPS:
2193 form_parms->xfer_rate = 250 * 1024;
2194 break;
2195 default:
2196 return EINVAL;
2197 }
2198 return 0;
2199
2200 case FDIOCSETFORMAT:
2201 if ((flag & FWRITE) == 0)
2202 return EBADF; /* must be opened for writing */
2203
2204 form_parms = (struct fdformat_parms *)addr;
2205 if (form_parms->fdformat_version != FDFORMAT_VERSION)
2206 return EINVAL;/* wrong version of formatting prog */
2207
2208 i = form_parms->nbps >> 7;
2209 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 ||
2210 i & ~(1 << (ffs(i)-1)))
2211 /* not a power-of-two multiple of 128 */
2212 return EINVAL;
2213
2214 switch (form_parms->xfer_rate) {
2215 case 500 * 1024:
2216 fd->sc_type->rate = FDC_500KBPS;
2217 break;
2218 case 300 * 1024:
2219 fd->sc_type->rate = FDC_300KBPS;
2220 break;
2221 case 250 * 1024:
2222 fd->sc_type->rate = FDC_250KBPS;
2223 break;
2224 default:
2225 return EINVAL;
2226 }
2227
2228 if (form_parms->nspt > FD_MAX_NSEC ||
2229 form_parms->fillbyte > 0xff ||
2230 form_parms->interleave > 0xff)
2231 return EINVAL;
2232 fd->sc_type->sectrac = form_parms->nspt;
2233 if (form_parms->ntrk != 2 && form_parms->ntrk != 1)
2234 return EINVAL;
2235 fd->sc_type->heads = form_parms->ntrk;
2236 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk;
2237 fd->sc_type->secsize = ffs(i)-1;
2238 fd->sc_type->gap2 = form_parms->gaplen;
2239 fd->sc_type->cylinders = form_parms->ncyl;
2240 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl *
2241 form_parms->nbps / DEV_BSIZE;
2242 fd->sc_type->step = form_parms->stepspercyl;
2243 fd->sc_type->fillbyte = form_parms->fillbyte;
2244 fd->sc_type->interleave = form_parms->interleave;
2245 return 0;
2246
2247 case FDIOCFORMAT_TRACK:
2248 if((flag & FWRITE) == 0)
2249 /* must be opened for writing */
2250 return EBADF;
2251 form_cmd = (struct fdformat_cmd *)addr;
2252 if (form_cmd->formatcmd_version != FDFORMAT_VERSION)
2253 /* wrong version of formatting prog */
2254 return EINVAL;
2255
2256 if (form_cmd->head >= fd->sc_type->heads ||
2257 form_cmd->cylinder >= fd->sc_type->cylinders) {
2258 return EINVAL;
2259 }
2260
2261 fd_formb = malloc(sizeof(struct ne7_fd_formb),
2262 M_TEMP, M_NOWAIT);
2263 if (fd_formb == 0)
2264 return ENOMEM;
2265
2266 fd_formb->head = form_cmd->head;
2267 fd_formb->cyl = form_cmd->cylinder;
2268 fd_formb->transfer_rate = fd->sc_type->rate;
2269 fd_formb->fd_formb_secshift = fd->sc_type->secsize;
2270 fd_formb->fd_formb_nsecs = fd->sc_type->sectrac;
2271 fd_formb->fd_formb_gaplen = fd->sc_type->gap2;
2272 fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte;
2273
2274 memset(il, 0, sizeof il);
2275 for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) {
2276 while (il[(j % fd_formb->fd_formb_nsecs) + 1])
2277 j++;
2278 il[(j % fd_formb->fd_formb_nsecs) + 1] = i;
2279 j += fd->sc_type->interleave;
2280 }
2281 for (i = 0; i < fd_formb->fd_formb_nsecs; i++) {
2282 fd_formb->fd_formb_cylno(i) = form_cmd->cylinder;
2283 fd_formb->fd_formb_headno(i) = form_cmd->head;
2284 fd_formb->fd_formb_secno(i) = il[i + 1];
2285 fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize;
2286 }
2287
2288 error = fdformat(dev, fd_formb, l->l_proc);
2289 free(fd_formb, M_TEMP);
2290 return error;
2291
2292 case FDIOCGETOPTS: /* get drive options */
2293 *(int *)addr = fd->sc_opts;
2294 return 0;
2295
2296 case FDIOCSETOPTS: /* set drive options */
2297 fd->sc_opts = *(int *)addr;
2298 return 0;
2299
2300 #ifdef FD_DEBUG
2301 case _IO('f', 100):
2302 fdc_wrfifo(fdc, NE7CMD_DUMPREG);
2303 fdcresult(fdc);
2304 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat);
2305 for (i = 0; i < fdc->sc_nstat; i++)
2306 printf(" 0x%x", fdc->sc_status[i]);
2307 printf(">\n");
2308 return 0;
2309
2310 case _IOW('f', 101, int):
2311 fdc->sc_cfg &= ~CFG_THRHLD_MASK;
2312 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK);
2313 fdconf(fdc);
2314 return 0;
2315
2316 case _IO('f', 102):
2317 fdc_wrfifo(fdc, NE7CMD_SENSEI);
2318 fdcresult(fdc);
2319 printf("fdc: sensei(%d regs): <", fdc->sc_nstat);
2320 for (i=0; i< fdc->sc_nstat; i++)
2321 printf(" 0x%x", fdc->sc_status[i]);
2322 printf(">\n");
2323 return 0;
2324 #endif
2325 default:
2326 return ENOTTY;
2327 }
2328
2329 #ifdef DIAGNOSTIC
2330 panic("fdioctl: impossible");
2331 #endif
2332 }
2333
2334 int
2335 fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p)
2336 {
2337 int rv = 0;
2338 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev));
2339 struct fd_type *type = fd->sc_type;
2340 struct buf *bp;
2341
2342 /* set up a buffer header for fdstrategy() */
2343 bp = getiobuf(NULL, false);
2344 if (bp == NULL)
2345 return ENOBUFS;
2346
2347 bp->b_vp = NULL;
2348 bp->b_cflags = BC_BUSY;
2349 bp->b_flags = B_PHYS | B_FORMAT;
2350 bp->b_proc = p;
2351 bp->b_dev = dev;
2352
2353 /*
2354 * Calculate a fake blkno, so fdstrategy() would initiate a
2355 * seek to the requested cylinder.
2356 */
2357 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads)
2358 + finfo->head * type->sectrac) * FD_BSIZE(fd))
2359 / DEV_BSIZE;
2360
2361 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs;
2362 bp->b_data = (void *)finfo;
2363
2364 #ifdef FD_DEBUG
2365 if (fdc_debug) {
2366 int i;
2367
2368 printf("fdformat: blkno 0x%llx count %d\n",
2369 (unsigned long long)bp->b_blkno, bp->b_bcount);
2370
2371 printf("\tcyl:\t%d\n", finfo->cyl);
2372 printf("\thead:\t%d\n", finfo->head);
2373 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs);
2374 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift);
2375 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen);
2376 printf("\ttrack data:");
2377 for (i = 0; i < finfo->fd_formb_nsecs; i++) {
2378 printf(" [c%d h%d s%d]",
2379 finfo->fd_formb_cylno(i),
2380 finfo->fd_formb_headno(i),
2381 finfo->fd_formb_secno(i) );
2382 if (finfo->fd_formb_secsize(i) != 2)
2383 printf("<sz:%d>", finfo->fd_formb_secsize(i));
2384 }
2385 printf("\n");
2386 }
2387 #endif
2388
2389 /* now do the format */
2390 fdstrategy(bp);
2391
2392 /* ...and wait for it to complete */
2393 rv = biowait(bp);
2394 putiobuf(bp);
2395 return rv;
2396 }
2397
2398 void
2399 fdgetdisklabel(dev_t dev)
2400 {
2401 int i;
2402 struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev));
2403 struct disklabel *lp = fd->sc_dk.dk_label;
2404 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel;
2405
2406 memset(lp, 0, sizeof(struct disklabel));
2407 memset(lp, 0, sizeof(struct cpu_disklabel));
2408
2409 lp->d_type = DTYPE_FLOPPY;
2410 lp->d_secsize = FD_BSIZE(fd);
2411 lp->d_secpercyl = fd->sc_type->seccyl;
2412 lp->d_nsectors = fd->sc_type->sectrac;
2413 lp->d_ncylinders = fd->sc_type->cylinders;
2414 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */
2415 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders;
2416 lp->d_rpm = 300; /* XXX like it matters... */
2417
2418 strncpy(lp->d_typename, "floppy disk", sizeof(lp->d_typename));
2419 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname));
2420 lp->d_interleave = 1;
2421 lp->d_flags = D_REMOVABLE;
2422
2423 lp->d_partitions[RAW_PART].p_offset = 0;
2424 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders;
2425 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED;
2426 lp->d_npartitions = RAW_PART + 1;
2427
2428 lp->d_magic = DISKMAGIC;
2429 lp->d_magic2 = DISKMAGIC;
2430 lp->d_checksum = dkcksum(lp);
2431
2432 /*
2433 * Call the generic disklabel extraction routine. If there's
2434 * not a label there, fake it.
2435 */
2436 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) {
2437 strncpy(lp->d_packname, "default label",
2438 sizeof(lp->d_packname));
2439 /*
2440 * Reset the partition info; it might have gotten
2441 * trashed in readdisklabel().
2442 *
2443 * XXX Why do we have to do this? readdisklabel()
2444 * should be safe...
2445 */
2446 for (i = 0; i < MAXPARTITIONS; ++i) {
2447 lp->d_partitions[i].p_offset = 0;
2448 if (i == RAW_PART) {
2449 lp->d_partitions[i].p_size =
2450 lp->d_secpercyl * lp->d_ncylinders;
2451 lp->d_partitions[i].p_fstype = FS_BSDFFS;
2452 } else {
2453 lp->d_partitions[i].p_size = 0;
2454 lp->d_partitions[i].p_fstype = FS_UNUSED;
2455 }
2456 }
2457 lp->d_npartitions = RAW_PART + 1;
2458 }
2459 }
2460
2461 void
2462 fd_do_eject(struct fd_softc *fd)
2463 {
2464 struct fdc_softc *fdc = (void *)device_parent(&fd->sc_dv);
2465
2466 #ifdef SUN4
2467 if (CPU_ISSUN4C) {
2468 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ);
2469 delay(10);
2470 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS);
2471 return;
2472 }
2473 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) {
2474 #endif
2475 bus_space_tag_t t = fdc->sc_bustag;
2476 bus_space_handle_t h = fdc->sc_handle;
2477 uint8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0);
2478
2479 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ);
2480 delay(10);
2481 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS);
2482 return;
2483 #ifdef SUN4
2484 }
2485 #endif
2486 }
2487
2488 /* ARGSUSED */
2489 void
2490 fd_mountroot_hook(struct device *dev)
2491 {
2492 int c;
2493
2494 fd_do_eject((struct fd_softc *)dev);
2495 printf("Insert filesystem floppy and press return.");
2496 for (;;) {
2497 c = cngetc();
2498 if ((c == '\r') || (c == '\n')) {
2499 printf("\n");
2500 break;
2501 }
2502 }
2503 }
2504
2505 #ifdef MEMORY_DISK_HOOKS
2506
2507 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT)
2508
2509 int
2510 fd_read_md_image(size_t *sizep, void **addrp)
2511 {
2512 struct buf buf, *bp = &buf;
2513 dev_t dev;
2514 off_t offset;
2515 char *addr;
2516
2517 dev = makedev(54,0); /* XXX */
2518
2519 addr = malloc(FDMICROROOTSIZE, M_DEVBUF, M_WAITOK);
2520 *addrp = addr;
2521
2522 if (fdopen(dev, 0, S_IFCHR, NULL))
2523 panic("fd: mountroot: fdopen");
2524
2525 offset = 0;
2526
2527 for (;;) {
2528 bp->b_dev = dev;
2529 bp->b_error = 0;
2530 bp->b_resid = 0;
2531 bp->b_proc = NULL;
2532 bp->b_cflags = BC_BUSY;
2533 bp->b_flags = B_PHYS | B_RAW | B_READ;
2534 bp->b_blkno = btodb(offset);
2535 bp->b_bcount = DEV_BSIZE;
2536 bp->b_data = addr;
2537 fdstrategy(bp);
2538 biowait(bp);
2539 if (bp->b_error)
2540 panic("fd: mountroot: fdread error %d", bp->b_error);
2541
2542 if (bp->b_resid != 0)
2543 break;
2544
2545 addr += DEV_BSIZE;
2546 offset += DEV_BSIZE;
2547 if (offset + DEV_BSIZE > FDMICROROOTSIZE)
2548 break;
2549 }
2550 (void)fdclose(dev, 0, S_IFCHR, NULL);
2551 *sizep = offset;
2552 fd_do_eject(device_lookup_private(&fd_cd, FDUNIT(dev)));
2553 return 0;
2554 }
2555 #endif /* MEMORY_DISK_HOOKS */
2556
2557 static void
2558 fd_set_properties(struct fd_softc *fd)
2559 {
2560 prop_dictionary_t disk_info, odisk_info, geom;
2561 struct fd_type *fdt;
2562 int secsize;
2563
2564 fdt = fd->sc_deftype;
2565
2566 disk_info = prop_dictionary_create();
2567
2568 geom = prop_dictionary_create();
2569
2570 prop_dictionary_set_uint64(geom, "sectors-per-unit",
2571 fdt->size);
2572
2573 switch (fdt->secsize) {
2574 case 2:
2575 secsize = 512;
2576 break;
2577 case 3:
2578 secsize = 1024;
2579 break;
2580 default:
2581 secsize = 0;
2582 }
2583
2584 prop_dictionary_set_uint32(geom, "sector-size",
2585 secsize);
2586
2587 prop_dictionary_set_uint16(geom, "sectors-per-track",
2588 fdt->sectrac);
2589
2590 prop_dictionary_set_uint16(geom, "tracks-per-cylinder",
2591 fdt->heads);
2592
2593 prop_dictionary_set_uint64(geom, "cylinders-per-unit",
2594 fdt->cylinders);
2595
2596 prop_dictionary_set(disk_info, "geometry", geom);
2597 prop_object_release(geom);
2598
2599 prop_dictionary_set(device_properties(&fd->sc_dv),
2600 "disk-info", disk_info);
2601
2602 /*
2603 * Don't release disk_info here; we keep a reference to it.
2604 * disk_detach() will release it when we go away.
2605 */
2606
2607 odisk_info = fd->sc_dk.dk_info;
2608 fd->sc_dk.dk_info = disk_info;
2609 if (odisk_info)
2610 prop_object_release(odisk_info);
2611 }
NetBSD on the FriendlyARM MINI2440