51 *
52 */
53
54#include "fd.h"
55#include "opt_devfs.h"
56#include "opt_fdc.h"
57
58#if NFDC > 0
59
60#include <sys/param.h>
61#include <sys/systm.h>
62#include <sys/kernel.h>
63#include <sys/buf.h>
64#include <sys/bus.h>
65#include <sys/conf.h>
66#include <sys/disklabel.h>
67#include <sys/devicestat.h>
68#include <sys/fcntl.h>
69#include <sys/malloc.h>
70#include <sys/module.h>
71#include <sys/proc.h>
72#include <sys/syslog.h>
73
74#include <sys/bus.h>
75#include <machine/bus.h>
76#include <sys/rman.h>
77
78#include <machine/clock.h>
79#include <machine/ioctl_fd.h>
80#include <machine/resource.h>
81#include <machine/stdarg.h>
82
83#ifdef DEVFS
84#include <sys/devfsext.h>
85#endif /* DEVFS */
86
87#include <isa/isavar.h>
88#ifdef PC98
89#include <pc98/pc98/pc98.h>
90#include <pc98/pc98/pc98_machdep.h>
91#include <pc98/pc98/epsonio.h>
92#include <i386/isa/isa_dma.h>
93#include <pc98/pc98/fdreg.h>
94#else
95#include <i386/isa/isa.h>
96#include <i386/isa/isa_dma.h>
97#include <i386/isa/fdreg.h>
98#include <isa/rtc.h>
99#endif
100#include <isa/fdc.h>
101
102#ifdef FDC_YE
103#undef FDC_YE
104#warning "fix FDC_YE! - newbus casualty"
105#endif
106
107/* misuse a flag to identify format operation */
108#define B_FORMAT B_XXX
109
110/* configuration flags */
111#define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */
112#ifdef FDC_YE
113#define FDC_IS_PCMCIA (1 << 1) /* if successful probe, then it's
114 a PCMCIA device */
115#endif
116
117/* internally used only, not really from CMOS: */
118#define RTCFDT_144M_PRETENDED 0x1000
119
120/* error returns for fd_cmd() */
121#define FD_FAILED -1
122#define FD_NOT_VALID -2
123#define FDC_ERRMAX 100 /* do not log more */
124
125#ifdef PC98
126#define NUMTYPES 5
127#define NUMDENS NUMTYPES
128#else
129#define NUMTYPES 14
130#define NUMDENS (NUMTYPES - 6)
131#endif
132
133/* These defines (-1) must match index for fd_types */
134#define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */
135#define NO_TYPE 0 /* must match NO_TYPE in ft.c */
136#ifdef PC98
137#define FDT_NONE 0 /* none present */
138#define FDT_12M 1 /* 1M/640K FDD */
139#define FDT_144M 2 /* 1.44M/1M/640K FDD */
140
141#define FD_1200 1
142#define FD_1232 2
143#define FD_720 3
144#define FD_640 4
145#define FD_1440 5
146#else
147#define FD_1720 1
148#define FD_1480 2
149#define FD_1440 3
150#define FD_1200 4
151#define FD_820 5
152#define FD_800 6
153#define FD_720 7
154#define FD_360 8
155
156#define FD_1480in5_25 9
157#define FD_1440in5_25 10
158#define FD_820in5_25 11
159#define FD_800in5_25 12
160#define FD_720in5_25 13
161#define FD_360in5_25 14
162#endif
163
164
165static struct fd_type fd_types[NUMTYPES] =
166{
167#ifdef PC98
168{ 15,2,0xFF,0x1B,80,2400,1,0,2,0x54,1 }, /* 1.2 meg HD floppy */
169{ 8,3,0xFF,0x35,77,1232,1,0,2,0x74,1 }, /* 1.2 meg HD floppy 1024/sec */
170{ 9,2,0xFF,0x20,80,1440,1,1,2,0x50,1 }, /* 720k floppy in 1.2meg drive */
171{ 8,2,0xFF,0x2A,80,1280,1,1,2,0x50,1 }, /* 640k floppy in 1.2meg drive */
172{ 18,2,0xFF,0x1B,80,2880,1,2,2,0x54,1 }, /* 1.44 meg HD 3.5in floppy */
173#else
174{ 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */
175{ 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */
176{ 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */
177{ 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */
178{ 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */
179{ 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */
180{ 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */
181{ 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */
182
183{ 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */
184{ 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */
185{ 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */
186{ 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */
187{ 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */
188{ 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */
189#endif
190};
191
192#ifdef PC98
193#define DRVS_PER_CTLR 4 /* 4 floppies */
194#else
195#define DRVS_PER_CTLR 2 /* 2 floppies */
196#endif
197
198/***********************************************************************\
199* Per controller structure. *
200\***********************************************************************/
201static devclass_t fdc_devclass;
202
203/***********************************************************************\
204* Per drive structure. *
205* N per controller (DRVS_PER_CTLR) *
206\***********************************************************************/
207struct fd_data {
208 struct fdc_data *fdc; /* pointer to controller structure */
209 int fdsu; /* this units number on this controller */
210 int type; /* Drive type (FD_1440...) */
211 struct fd_type *ft; /* pointer to the type descriptor */
212 int flags;
213#define FD_OPEN 0x01 /* it's open */
214#define FD_ACTIVE 0x02 /* it's active */
215#define FD_MOTOR 0x04 /* motor should be on */
216#define FD_MOTOR_WAIT 0x08 /* motor coming up */
217 int skip;
218 int hddrv;
219#define FD_NO_TRACK -2
220 int track; /* where we think the head is */
221 int options; /* user configurable options, see ioctl_fd.h */
222 struct callout_handle toffhandle;
223 struct callout_handle tohandle;
224 struct devstat device_stats;
225#ifdef DEVFS
226 void *bdevs[1 + NUMDENS + MAXPARTITIONS];
227 void *cdevs[1 + NUMDENS + MAXPARTITIONS];
228#endif
229#ifdef PC98
230 int pc98_trans;
231#endif
232 device_t dev;
233 fdu_t fdu;
234};
235static devclass_t fd_devclass;
236
237#ifdef EPSON_NRDISK
238typedef unsigned int nrd_t;
239
240#define P_NRD_ADDRH 0xc24
241#define P_NRD_ADDRM 0xc22
242#define P_NRD_ADDRL 0xc20
243#define P_NRD_CHECK 0xc20
244#define P_NRD_DATA 0xc26
245#define P_NRD_LED 0xc36
246#define B_NRD_CHK 0x80
247#define B_NRD_LED 0x40
248#define A_NRD_INFO 0x2
249#define A_NRD_BASE 0x400
250#define NRD_STATUS 0x0
251#define NRD_ST0_HD 0x04
252
253static fdu_t nrdu=-1;
254static int nrdsec=0;
255static nrd_t nrdblkn=0;
256static nrd_t nrdaddr=0x0;
257
258#define nrd_check_ready() ({ \
259 (epson_inb(P_NRD_CHECK) & B_NRD_CHK) ? 0 : 1; \
260 })
261#define nrd_LED_on() epson_outb(P_NRD_LED, B_NRD_LED)
262#define nrd_LED_off() epson_outb(P_NRD_LED, ~B_NRD_LED)
263#define nrd_trac() ((int)(nrd_info(nrdaddr) & 0xff))
264#define nrd_head() ((int)((nrd_info(nrdaddr) >> 8) & 0xff))
265#define nrd_sec() ((int)(nrd_info(nrdaddr + 2) & 0xff))
266#define nrd_secsize() ((int)((nrd_info(A_NRD_INFO) >> 8) & 0xff))
267#define nrd_addrset(p) nrd_addr((nrd_t)((nrd_t)p+A_NRD_BASE))
268
269static inline void
270nrd_addr(addr)
271 nrd_t addr;
272{
273 epson_outb(P_NRD_ADDRH, (u_char)((addr >> 16) & 0x1f));
274 epson_outb(P_NRD_ADDRM, (u_char)((addr >> 8) & 0xff));
275 epson_outb(P_NRD_ADDRL, (u_char)(addr & 0xff));
276}
277
278static inline u_short
279nrd_info(addr)
280 nrd_t addr;
281{
282 u_short tmp;
283
284 nrd_addr(addr);
285 outb(0x43f, 0x42);
286 tmp = (short)inw(P_NRD_DATA);
287 outb(0x43f, 0x40);
288 return ((u_short)tmp);
289}
290#endif /* EPSON_NRDISK */
291
292/***********************************************************************\
293* Throughout this file the following conventions will be used: *
294* fd is a pointer to the fd_data struct for the drive in question *
295* fdc is a pointer to the fdc_data struct for the controller *
296* fdu is the floppy drive unit number *
297* fdcu is the floppy controller unit number *
298* fdsu is the floppy drive unit number on that controller. (sub-unit) *
299\***********************************************************************/
300
301#ifdef FDC_YE
302#include "card.h"
303static int yeattach(struct isa_device *);
304#endif
305
306/* needed for ft driver, thus exported */
307int in_fdc(struct fdc_data *);
308int out_fdc(struct fdc_data *, int);
309
310/* internal functions */
311static void fdc_add_device(device_t, const char *, int);
312static void fdc_intr(void *);
313static void set_motor(struct fdc_data *, int, int);
314# define TURNON 1
315# define TURNOFF 0
316static timeout_t fd_turnoff;
317static timeout_t fd_motor_on;
318static void fd_turnon(struct fd_data *);
319static void fdc_reset(fdc_p);
320static int fd_in(struct fdc_data *, int *);
321static void fdstart(struct fdc_data *);
322static timeout_t fd_iotimeout;
323static timeout_t fd_pseudointr;
324static int fdstate(struct fdc_data *);
325static int retrier(struct fdc_data *);
326static int fdformat(dev_t, struct fd_formb *, struct proc *);
327
328static int enable_fifo(fdc_p fdc);
329
330static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */
331
332
333#define DEVIDLE 0
334#define FINDWORK 1
335#define DOSEEK 2
336#define SEEKCOMPLETE 3
337#define IOCOMPLETE 4
338#define RECALCOMPLETE 5
339#define STARTRECAL 6
340#define RESETCTLR 7
341#define SEEKWAIT 8
342#define RECALWAIT 9
343#define MOTORWAIT 10
344#define IOTIMEDOUT 11
345#define RESETCOMPLETE 12
346#ifdef FDC_YE
347#define PIOREAD 13
348#endif
349
350#ifdef FDC_DEBUG
351static char const * const fdstates[] =
352{
353"DEVIDLE",
354"FINDWORK",
355"DOSEEK",
356"SEEKCOMPLETE",
357"IOCOMPLETE",
358"RECALCOMPLETE",
359"STARTRECAL",
360"RESETCTLR",
361"SEEKWAIT",
362"RECALWAIT",
363"MOTORWAIT",
364"IOTIMEDOUT",
365"RESETCOMPLETE",
366#ifdef FDC_YE
367"PIOREAD",
368#endif
369};
370
371/* CAUTION: fd_debug causes huge amounts of logging output */
372static int volatile fd_debug = 0;
373#define TRACE0(arg) if(fd_debug) printf(arg)
374#define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2)
375#else /* FDC_DEBUG */
376#define TRACE0(arg)
377#define TRACE1(arg1, arg2)
378#endif /* FDC_DEBUG */
379
380#ifdef FDC_YE
381#if NCARD > 0
382#include <sys/select.h>
383#include <sys/module.h>
384#include <pccard/cardinfo.h>
385#include <pccard/driver.h>
386#include <pccard/slot.h>
387
388/*
389 * PC-Card (PCMCIA) specific code.
390 */
391static int yeinit(struct pccard_devinfo *); /* init device */
392static void yeunload(struct pccard_devinfo *); /* Disable driver */
393static int yeintr(struct pccard_devinfo *); /* Interrupt handler */
394
395PCCARD_MODULE(fdc, yeinit, yeunload, yeintr, 0, bio_imask);
396
397/*
398 * this is the secret PIO data port (offset from base)
399 */
400#define FDC_YE_DATAPORT 6
401
402/*
403 * Initialize the device - called from Slot manager.
404 */
405static int yeinit(struct pccard_devinfo *devi)
406{
407 fdc_p fdc = &fdc_data[devi->isahd.id_unit];
408
409 /* validate unit number. */
410 if (devi->isahd.id_unit >= NFDC)
411 return(ENODEV);
412 fdc->baseport = devi->isahd.id_iobase;
413 /*
414 * reset controller
415 */
416 outb(fdc->baseport+FDOUT, 0);
417 DELAY(100);
418 outb(fdc->baseport+FDOUT, FDO_FRST);
419
420 /*
421 * wire into system
422 */
423 if (yeattach(&devi->isahd) == 0)
424 return(ENXIO);
425
426 return(0);
427}
428
429/*
430 * yeunload - unload the driver and clear the table.
431 * XXX TODO:
432 * This is usually called when the card is ejected, but
433 * can be caused by a modunload of a controller driver.
434 * The idea is to reset the driver's view of the device
435 * and ensure that any driver entry points such as
436 * read and write do not hang.
437 */
438static void yeunload(struct pccard_devinfo *devi)
439{
440 if (fd_data[devi->isahd.id_unit].type == NO_TYPE)
441 return;
442
443 /*
444 * this prevents Fdopen() and fdstrategy() from attempting
445 * to access unloaded controller
446 */
447 fd_data[devi->isahd.id_unit].type = NO_TYPE;
448
449 printf("fdc%d: unload\n", devi->isahd.id_unit);
450}
451
452/*
453 * yeintr - Shared interrupt called from
454 * front end of PC-Card handler.
455 */
456static int yeintr(struct pccard_devinfo *devi)
457{
458 fdintr((fdcu_t)devi->isahd.id_unit);
459 return(1);
460}
461#endif /* NCARD > 0 */
462#endif /* FDC_YE */
463
464static d_open_t Fdopen; /* NOTE, not fdopen */
465static d_close_t fdclose;
466static d_ioctl_t fdioctl;
467static d_strategy_t fdstrategy;
468
469#define CDEV_MAJOR 9
470#define BDEV_MAJOR 2
471
472static struct cdevsw fd_cdevsw = {
473 /* open */ Fdopen,
474 /* close */ fdclose,
475 /* read */ physread,
476 /* write */ physwrite,
477 /* ioctl */ fdioctl,
478 /* stop */ nostop,
479 /* reset */ noreset,
480 /* devtotty */ nodevtotty,
481 /* poll */ nopoll,
482 /* mmap */ nommap,
483 /* strategy */ fdstrategy,
484 /* name */ "fd",
485 /* parms */ noparms,
486 /* maj */ CDEV_MAJOR,
487 /* dump */ nodump,
488 /* psize */ nopsize,
489 /* flags */ D_DISK,
490 /* maxio */ 0,
491 /* bmaj */ BDEV_MAJOR
492};
493
494static int
495fdc_err(struct fdc_data *fdc, const char *s)
496{
497 fdc->fdc_errs++;
498 if (s) {
499 if (fdc->fdc_errs < FDC_ERRMAX) {
500 device_print_prettyname(fdc->fdc_dev);
501 printf("%s", s);
502 } else if (fdc->fdc_errs == FDC_ERRMAX) {
503 device_print_prettyname(fdc->fdc_dev);
504 printf("too many errors, not logging any more\n");
505 }
506 }
507
508 return FD_FAILED;
509}
510
511/*
512 * fd_cmd: Send a command to the chip. Takes a varargs with this structure:
513 * Unit number,
514 * # of output bytes, output bytes as ints ...,
515 * # of input bytes, input bytes as ints ...
516 */
517static int
518fd_cmd(struct fdc_data *fdc, int n_out, ...)
519{
520 u_char cmd;
521 int n_in;
522 int n;
523 va_list ap;
524
525 va_start(ap, n_out);
526 cmd = (u_char)(va_arg(ap, int));
527 va_end(ap);
528 va_start(ap, n_out);
529 for (n = 0; n < n_out; n++)
530 {
531 if (out_fdc(fdc, va_arg(ap, int)) < 0)
532 {
533 char msg[50];
534 snprintf(msg, sizeof(msg),
535 "cmd %x failed at out byte %d of %d\n",
536 cmd, n + 1, n_out);
537 return fdc_err(fdc, msg);
538 }
539 }
540 n_in = va_arg(ap, int);
541 for (n = 0; n < n_in; n++)
542 {
543 int *ptr = va_arg(ap, int *);
544 if (fd_in(fdc, ptr) < 0)
545 {
546 char msg[50];
547 snprintf(msg, sizeof(msg),
548 "cmd %02x failed at in byte %d of %d\n",
549 cmd, n + 1, n_in);
550 return fdc_err(fdc, msg);
551 }
552 }
553
554 return 0;
555}
556
557static int
558enable_fifo(fdc_p fdc)
559{
560 int i, j;
561
562 if ((fdc->flags & FDC_HAS_FIFO) == 0) {
563
564 /*
565 * XXX:
566 * Cannot use fd_cmd the normal way here, since
567 * this might be an invalid command. Thus we send the
568 * first byte, and check for an early turn of data directon.
569 */
570
571 if (out_fdc(fdc, I8207X_CONFIGURE) < 0)
572 return fdc_err(fdc, "Enable FIFO failed\n");
573
574 /* If command is invalid, return */
575 j = 100000;
576 while ((i = inb(fdc->baseport + FDSTS) & (NE7_DIO | NE7_RQM))
577 != NE7_RQM && j-- > 0)
578 if (i == (NE7_DIO | NE7_RQM)) {
579 fdc_reset(fdc);
580 return FD_FAILED;
581 }
582 if (j<0 ||
583 fd_cmd(fdc, 3,
584 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) {
585 fdc_reset(fdc);
586 return fdc_err(fdc, "Enable FIFO failed\n");
587 }
588 fdc->flags |= FDC_HAS_FIFO;
589 return 0;
590 }
591 if (fd_cmd(fdc, 4,
592 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0)
593 return fdc_err(fdc, "Re-enable FIFO failed\n");
594 return 0;
595}
596
597static int
598fd_sense_drive_status(fdc_p fdc, int *st3p)
599{
600 int st3;
601
602 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3))
603 {
604 return fdc_err(fdc, "Sense Drive Status failed\n");
605 }
606 if (st3p)
607 *st3p = st3;
608
609 return 0;
610}
611
612static int
613fd_sense_int(fdc_p fdc, int *st0p, int *cylp)
614{
615 int cyl, st0, ret;
616
617#ifdef EPSON_NRDISK
618 if (fdc->fdu == nrdu) {
619 if (fdc->fd->track >= 0) nrdaddr = (fdc->fd->track + 1) * 8;
620 else nrdaddr = 0x0;
621 *st0p = nrd_head() ? NRD_ST0_HD : NRD_STATUS;
622 *cylp = nrd_trac();
623 }
624 else {
625#endif /* EPSON_NRDISK */
626 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0);
627 if (ret) {
628 (void)fdc_err(fdc,
629 "sense intr err reading stat reg 0\n");
630 return ret;
631 }
632
633 if (st0p)
634 *st0p = st0;
635
636 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) {
637 /*
638 * There doesn't seem to have been an interrupt.
639 */
640 return FD_NOT_VALID;
641 }
642
643 if (fd_in(fdc, &cyl) < 0) {
644 return fdc_err(fdc, "can't get cyl num\n");
645 }
646
647 if (cylp)
648 *cylp = cyl;
649
650#ifdef EPSON_NRDISK
651 }
652#endif /* EPSON_NRDISK */
653 return 0;
654}
655
656
657static int
658fd_read_status(fdc_p fdc, int fdsu)
659{
660 int i, ret;
661
662 for (i = 0; i < 7; i++) {
663 /*
664 * XXX types are poorly chosen. Only bytes can by read
665 * from the hardware, but fdc->status[] wants u_ints and
666 * fd_in() gives ints.
667 */
668 int status;
669
670#ifdef EPSON_NRDISK
671 if (fdc->fdu == nrdu) {
672 switch (i) {
673 case 0: fdc->status[i] = nrd_head()
674 ? NRD_ST0_HD : NRD_STATUS; break;
675 case 1: fdc->status[i] = NRD_STATUS; break;
676 case 2: fdc->status[i] = NRD_STATUS; break;
677 case 3: fdc->status[i] = nrd_trac(); break;
678 case 4: fdc->status[i] = nrd_head(); break;
679 case 5: fdc->status[i] = nrdsec; break;
680 case 6: fdc->status[i] = nrd_secsize(); break;
681 }
682 ret = 0;
683 }
684 else {
685#endif /* EPSON_NRDISK */
686 ret = fd_in(fdc, &status);
687 fdc->status[i] = status;
688 if (ret != 0)
689 break;
690#ifdef EPSON_NRDISK
691 }
692#endif /* EPSON_NRDISK */
693 }
694
695 if (ret == 0)
696 fdc->flags |= FDC_STAT_VALID;
697 else
698 fdc->flags &= ~FDC_STAT_VALID;
699
700 return ret;
701}
702
703/****************************************************************************/
704/* autoconfiguration stuff */
705/****************************************************************************/
706#ifdef PC98
707static int pc98_trans = 0; /* 0 : HD , 1 : DD , 2 : 1.44 */
708static int pc98_trans_prev = 0;
709
710static void set_density(fdc_p fdc)
711{
712 /* always motor on */
713 outb(IO_FDPORT, (pc98_trans != 1 ? FDP_FDDEXC : 0) | FDP_PORTEXC);
714 DELAY(100);
715 outb(fdc->baseport + FDOUT, FDO_RST | FDO_DMAE);
716 /* in the case of note W, always inhibit 100ms timer */
717}
718
719static int pc98_fd_check_ready(fdu_t fdu)
720{
721 fd_p fd = devclass_get_softc(fd_devclass, fdu);
722 struct fdc_data *fdc = fd->fdc;
723 int retry = 0;
724
725#ifdef EPSON_NRDISK
726 if (fdu == nrdu) {
727 if (nrd_check_ready()) return 0;
728 else return -1;
729 }
730#endif
731 while (retry++ < 30000) {
732 set_motor(fdc, fd->fdsu, TURNON);
733 out_fdc(fdc, NE7CMD_SENSED); /* Sense Drive Status */
734 DELAY(100);
735 out_fdc(fdc, fdu); /* Drive number */
736 DELAY(100);
737 if ((in_fdc(fdc) & NE7_ST3_RD)){
738 outb(fdc->baseport + FDOUT,
739 FDO_DMAE | FDO_MTON);
740 DELAY(10);
741 return 0;
742 }
743 }
744 return -1;
745}
746#endif
747
748static int
749fdc_probe(device_t dev)
750{
751 int error, i, ic_type;
752 struct fdc_data *fdc;
753 char myname[8]; /* better be long enough */
754
755 fdc = device_get_softc(dev);
756 bzero(fdc, sizeof *fdc);
757 fdc->fdc_dev = dev;
758 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0;
759 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0;
760
761 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT,
762 &fdc->rid_ioport, 0ul, ~0ul,
763 IO_FDCSIZE, RF_ACTIVE);
764 if (fdc->res_ioport == 0) {
765 device_print_prettyname(dev);
766 printf("cannot reserve I/O port range\n");
767 error = ENXIO;
768 goto out;
769 }
770 fdc->baseport = fdc->res_ioport->r_start;
771
772 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ,
773 &fdc->rid_irq, 0ul, ~0ul, 1,
774 RF_ACTIVE);
775 if (fdc->res_irq == 0) {
776 device_print_prettyname(dev);
777 printf("cannot reserve interrupt line\n");
778 error = ENXIO;
779 goto out;
780 }
781 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ,
782 &fdc->rid_drq, 0ul, ~0ul, 1,
783 RF_ACTIVE);
784 if (fdc->res_drq == 0) {
785 device_print_prettyname(dev);
786 printf("cannot reserve DMA request line\n");
787 error = ENXIO;
788 goto out;
789 }
790 fdc->dmachan = fdc->res_drq->r_start;
791 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq,
792 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr);
793
794#ifndef PC98
795 /* First - lets reset the floppy controller */
796 outb(fdc->baseport + FDOUT, 0);
797 DELAY(100);
798 outb(fdc->baseport + FDOUT, FDO_FRST);
799#endif
800
801 /* see if it can handle a command */
802#ifdef PC98
803 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(4, 240),
804 NE7_SPEC_2(2, 0), 0)) {
805 error = ENXIO;
806 goto out;
807 }
808#else
809 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240),
810 NE7_SPEC_2(2, 0), 0)) {
811 error = ENXIO;
812 goto out;
813 }
814#endif
815
816#ifndef PC98
817 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) {
818 ic_type = (u_char)ic_type;
819 switch (ic_type) {
820 case 0x80:
821 device_set_desc(dev, "NEC 765 or clone");
822 fdc->fdct = FDC_NE765;
823 break;
824 case 0x81:
825 device_set_desc(dev, "Intel 82077 or clone");
826 fdc->fdct = FDC_I82077;
827 break;
828 case 0x90:
829 device_set_desc(dev, "NEC 72065B or clone");
830 fdc->fdct = FDC_NE72065;
831 break;
832 default:
833 device_set_desc(dev, "generic floppy controller");
834 fdc->fdct = FDC_UNKNOWN;
835 break;
836 }
837 }
838#endif
839
840 snprintf(myname, sizeof(myname), "%s%d", device_get_name(dev),
841 device_get_unit(dev));
842 for (i = resource_query_string(-1, "at", myname); i != -1;
843 i = resource_query_string(i, "at", myname))
844 fdc_add_device(dev, resource_query_name(i),
845 resource_query_unit(i));
846#ifdef FDC_YE
847 /*
848 * don't succeed on probe; wait
849 * for PCCARD subsystem to do it
850 */
851 if (dev->id_flags & FDC_IS_PCMCIA)
852 return(0);
853#endif
854 return (0);
855
856out:
857 if (fdc->fdc_intr)
858 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq,
859 fdc->fdc_intr);
860 if (fdc->res_irq != 0) {
861 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq,
862 fdc->res_irq);
863 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq,
864 fdc->res_irq);
865 }
866 if (fdc->res_ioport != 0) {
867 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport,
868 fdc->res_ioport);
869 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport,
870 fdc->res_ioport);
871 }
872 if (fdc->res_drq != 0) {
873 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq,
874 fdc->res_drq);
875 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq,
876 fdc->res_drq);
877 }
878 return (error);
879}
880
881/*
882 * Aped dfr@freebsd.org's isa_add_device().
883 */
884static void
885fdc_add_device(device_t dev, const char *name, int unit)
886{
887 int disabled, *ivar;
888 device_t child;
889
890 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT);
891 if (ivar == 0)
892 return;
893 if (resource_int_value(name, unit, "drive", ivar) == 0)
894 *ivar = 0;
895 child = device_add_child(dev, name, unit, ivar);
896 if (child == 0)
897 return;
898 if (resource_int_value(name, unit, "disabled", &disabled) == 0)
899 device_disable(child);
900}
901
902static int
903fdc_attach(device_t dev)
904{
905 struct fdc_data *fdc = device_get_softc(dev);
906 fdcu_t fdcu = device_get_unit(dev);
907
908 fdc->fdcu = fdcu;
909 fdc->flags |= FDC_ATTACHED;
910
911 /* Acquire the DMA channel forever, The driver will do the rest */
912 /* XXX should integrate with rman */
913 isa_dma_acquire(fdc->dmachan);
914 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */);
915 fdc->state = DEVIDLE;
916
917#ifdef PC98
918 /* reset controller, turn motor off, clear fdout mirror reg */
919 fdc_reset(fdc);
920#else
921 /* reset controller, turn motor off, clear fdout mirror reg */
922 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0)));
923#endif
924 bufq_init(&fdc->head);
925
926#ifdef FIFO_BEFORE_MOTORON
927 /* Hmm, this doesn't work here - is set_motor() magic? -Peter */
928 if (fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN
929 && enable_fifo(fdc) == 0) {
930 device_print_prettyname(dev);
931 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold);
932 }
933#endif
934 /*
935 * Probe and attach any children as were configured above.
936 */
937 return (bus_generic_attach(dev));
938}
939
940static void
941fdc_print_child(device_t me, device_t child)
942{
943 printf(" at %s%d drive %d", device_get_name(me), device_get_unit(me),
944 *(int *)device_get_ivars(child));
945}
946
947static int
948fd_probe(device_t dev)
949{
950 int i;
951 u_int fdt, st0, st3;
952 struct fd_data *fd;
953 struct fdc_data *fdc;
954 fdsu_t fdsu;
955#ifndef FIFO_BEFORE_MOTORON
956 static int fd_fifo = 0;
957#endif
958
959 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */
960 fd = device_get_softc(dev);
961 fdc = device_get_softc(device_get_parent(dev));
962
963 bzero(fd, sizeof *fd);
964 fd->dev = dev;
965 fd->fdc = fdc;
966 fd->fdsu = fdsu;
967 fd->fdu = device_get_unit(dev);
968
969#ifdef PC98
970 /* look up what bios thinks we have */
971 switch (fd->fdu) {
972 case 0: case 1: case 2: case 3:
973 if ((PC98_SYSTEM_PARAMETER(0x5ae) >> fd->fdu) & 0x01)
974 fdt = FDT_144M;
975#ifdef EPSON_NRDISK
976 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) {
977 fdt = FDT_12M;
978 switch (epson_machine_id) {
979 case 0x20: case 0x27:
980 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) & 0x01) {
981 if (nrd_check_ready()) {
982 nrd_LED_on();
983 nrdu = fd->fdu;
984 } else {
985 fdt = FDT_NONE;
986 }
987 }
988 }
989 }
990#else /* !EPSON_NRDISK */
991 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) {
992 fdt = FDT_12M;
993 switch (epson_machine_id) {
994 case 0x20: case 0x27:
995 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) & 0x01)
996 fdt = FDT_NONE;
997 }
998 }
999#endif /* EPSON_NRDISK */
1000 else
1001 fdt = FDT_NONE;
1002 break;
1003 default:
1004 fdt = FDT_NONE;
1005 break;
1006 }
1007#else
1008 /* look up what bios thinks we have */
1009 switch (fd->fdu) {
1010 case 0:
1011 if (isa_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0)
1012 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED;
1013 else
1014 fdt = (rtcin(RTC_FDISKETTE) & 0xf0);
1015 break;
1016 case 1:
1017 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0);
1018 break;
1019 default:
1020 fdt = RTCFDT_NONE;
1021 break;
1022 }
1023#endif
1024
1025 /* is there a unit? */
1026#ifdef PC98
1027 if (fdt == FDT_NONE)
1028 return (ENXIO);
1029#else
1030 if (fdt == RTCFDT_NONE)
1031 return (ENXIO);
1032#endif
1033
1034#ifndef PC98
1035 /* select it */
1036 set_motor(fdc, fdsu, TURNON);
1037 DELAY(1000000); /* 1 sec */
1038
1039#ifndef FIFO_BEFORE_MOTORON
1040 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN
1041 && enable_fifo(fdc) == 0) {
1042 device_print_prettyname(device_get_parent(dev));
1043 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold);
1044 }
1045 fd_fifo = 1;
1046#endif
1047
1048 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0)
1049 && (st3 & NE7_ST3_T0)) {
1050 /* if at track 0, first seek inwards */
1051 /* seek some steps: */
1052 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0);
1053 DELAY(300000); /* ...wait a moment... */
1054 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */
1055 }
1056
1057 /* If we're at track 0 first seek inwards. */
1058 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) {
1059 /* Seek some steps... */
1060 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) {
1061 /* ...wait a moment... */
1062 DELAY(300000);
1063 /* make ctrlr happy: */
1064 fd_sense_int(fdc, 0, 0);
1065 }
1066 }
1067
1068 for (i = 0; i < 2; i++) {
1069 /*
1070 * we must recalibrate twice, just in case the
1071 * heads have been beyond cylinder 76, since most
1072 * FDCs still barf when attempting to recalibrate
1073 * more than 77 steps
1074 */
1075 /* go back to 0: */
1076 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) {
1077 /* a second being enough for full stroke seek*/
1078 DELAY(i == 0 ? 1000000 : 300000);
1079
1080 /* anything responding? */
1081 if (fd_sense_int(fdc, &st0, 0) == 0 &&
1082 (st0 & NE7_ST0_EC) == 0)
1083 break; /* already probed succesfully */
1084 }
1085 }
1086
1087 set_motor(fdc, fdsu, TURNOFF);
1088
1089 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */
1090 return (ENXIO);
1091#endif /* PC98 */
1092
1093 fd->track = FD_NO_TRACK;
1094 fd->fdc = fdc;
1095 fd->fdsu = fdsu;
1096 fd->options = 0;
1097 callout_handle_init(&fd->toffhandle);
1098 callout_handle_init(&fd->tohandle);
1099
1100#ifdef PC98
1101 switch (fdt) {
1102 case FDT_12M:
1103#ifdef EPSON_NRDISK
1104 if (fdu == nrdu) {
1105 device_set_desc(dev, "EPSON RAM DRIVE");
1106 nrd_LED_off();
1107 } else
1108 device_set_desc(dev, "1M/640M FDD");
1109#else
1110 device_set_desc(dev, "1M/640M FDD");
1111#endif
1112 fd->type = FD_1200;
1113 fd->pc98_trans = 0;
1114 break;
1115 case FDT_144M:
1116 device_set_desc(dev, "1.44M FDD");
1117 fd->type = FD_1200;
1118 fd->pc98_trans = 0;
1119 outb(0x4be, (fd->fdu << 5) | 0x10);
1120 break;
1121 default:
1122 return (ENXIO);
1123 }
1124#else
1125 switch (fdt) {
1126 case RTCFDT_12M:
1127 device_set_desc(dev, "1200-KB 5.25\" drive");
1128 fd->type = FD_1200;
1129 break;
1130 case RTCFDT_144M | RTCFDT_144M_PRETENDED:
1131 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive");
1132 fdt = RTCFDT_144M;
1133 fd->type = FD_1440;
1134 case RTCFDT_144M:
1135 device_set_desc(dev, "1440-KB 3.5\" drive");
1136 fd->type = FD_1440;
1137 break;
1138 case RTCFDT_288M:
1139 case RTCFDT_288M_1:
1140 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)");
1141 fd->type = FD_1440;
1142 break;
1143 case RTCFDT_360K:
1144 device_set_desc(dev, "360-KB 5.25\" drive");
1145 fd->type = FD_360;
1146 break;
1147 case RTCFDT_720K:
1148 printf("720-KB 3.5\" drive");
1149 fd->type = FD_720;
1150 break;
1151 default:
1152 return (ENXIO);
1153 }
1154#endif
1155 return (0);
1156}
1157
1158static int
1159fd_attach(device_t dev)
1160{
1161 struct fd_data *fd;
1162#ifdef DEVFS
1163 int i;
1164 int mynor;
1165 int typemynor;
1166 int typesize;
1167#endif
1168
1169 fd = device_get_softc(dev);
1170
1171#ifdef DEVFS /* XXX bitrot */
1172 mynor = fd->fdu << 6;
1173 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK,
1174 UID_ROOT, GID_OPERATOR, 0640,
1175 "fd%d", fd->fdu);
1176 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR,
1177 UID_ROOT, GID_OPERATOR, 0640,
1178 "rfd%d", fd->fdu);
1179 for (i = 1; i < 1 + NUMDENS; i++) {
1180 /*
1181 * XXX this and the lookup in Fdopen() should be
1182 * data driven.
1183 */
1184#ifdef PC98
1185 switch (fd->type) {
1186 case FDT_12M:
1187 if (i != FD_1200 && i != FD_1232
1188 && i != FD_720 && i != FD_640)
1189 continue;
1190 break;
1191 case FDT_144M:
1192 if (i != FD_1200 && i != FD_1232
1193 && i != FD_720 && i != FD_640
1194 && i != FD_1440)
1195 continue;
1196 break;
1197 }
1198#else
1199 switch (fd->type) {
1200 case FD_360:
1201 if (i != FD_360)
1202 continue;
1203 break;
1204 case FD_720:
1205 if (i != FD_720 && i != FD_800 && i != FD_820)
1206 continue;
1207 break;
1208 case FD_1200:
1209 if (i != FD_360 && i != FD_720 && i != FD_800
1210 && i != FD_820 && i != FD_1200
1211 && i != FD_1440 && i != FD_1480)
1212 continue;
1213 break;
1214 case FD_1440:
1215 if (i != FD_720 && i != FD_800 && i != FD_820
1216 && i != FD_1200 && i != FD_1440
1217 && i != FD_1480 && i != FD_1720)
1218 continue;
1219 break;
1220 }
1221#endif
1222#ifdef PC98
1223 if (i == FD_1232)
1224 typesize = fd_types[i - 1].size;
1225 else
1226 typesize = fd_types[i - 1].size / 2;
1227#else
1228 typesize = fd_types[i - 1].size / 2;
1229 /*
1230 * XXX all these conversions give bloated code and
1231 * confusing names.
1232 */
1233 if (typesize == 1476)
1234 typesize = 1480;
1235 if (typesize == 1722)
1236 typesize = 1720;
1237#endif
1238 typemynor = mynor | i;
1239 fd->bdevs[i] =
1240 devfs_add_devswf(&fd_cdevsw, typemynor, DV_BLK,
1241 UID_ROOT, GID_OPERATOR, 0640,
1242 "fd%d.%d", fd->fdu, typesize);
1243 fd->cdevs[i] =
1244 devfs_add_devswf(&fd_cdevsw, typemynor, DV_CHR,
1245 UID_ROOT, GID_OPERATOR, 0640,
1246 "rfd%d.%d", fd->fdu, typesize);
1247 }
1248
1249 for (i = 0; i < MAXPARTITIONS; i++) {
1250 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0],
1251 "fd%d%c", fd->fdu, 'a' + i);
1252 fd->cdevs[1 + NUMDENS + i] =
1253 devfs_makelink(fd->cdevs[0],
1254 "rfd%d%c", fd->fdu, 'a' + i);
1255 }
1256#endif /* DEVFS */
1257 /*
1258 * Export the drive to the devstat interface.
1259 */
1260 devstat_add_entry(&fd->device_stats, device_get_name(dev),
1261 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS,
1262 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER,
1263 DEVSTAT_PRIORITY_FD);
1264 return (0);
1265}
1266
1267#ifdef FDC_YE
1268/*
1269 * this is a subset of fdattach() optimized for the Y-E Data
1270 * PCMCIA floppy drive.
1271 */
1272static int yeattach(struct isa_device *dev)
1273{
1274 fdcu_t fdcu = dev->id_unit;
1275 fdc_p fdc = fdc_data + fdcu;
1276 fdsu_t fdsu = 0; /* assume 1 drive per YE controller */
1277 fdu_t fdu;
1278 fd_p fd;
1279 int st0, st3, i;
1280#ifdef DEVFS
1281 int mynor;
1282 int typemynor;
1283 int typesize;
1284#endif
1285 fdc->fdcu = fdcu;
1286 /*
1287 * the FDC_PCMCIA flag is used to to indicate special PIO is used
1288 * instead of DMA
1289 */
1290 fdc->flags = FDC_ATTACHED|FDC_PCMCIA;
1291 fdc->state = DEVIDLE;
1292 /* reset controller, turn motor off, clear fdout mirror reg */
1293 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0)));
1294 bufq_init(&fdc->head);
1295 /*
1296 * assume 2 drives/ "normal" controller
1297 */
1298 fdu = fdcu * 2;
1299 if (fdu >= NFD) {
1300 printf("fdu %d >= NFD\n",fdu);
1301 return(0);
1302 };
1303 fd = &fd_data[fdu];
1304
1305 set_motor(fdcu, fdsu, TURNON);
1306 DELAY(1000000); /* 1 sec */
1307 fdc->fdct = FDC_NE765;
1308
1309 if ((fd_cmd(fdcu, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) &&
1310 (st3 & NE7_ST3_T0)) {
1311 /* if at track 0, first seek inwards */
1312 /* seek some steps: */
1313 (void)fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0);
1314 DELAY(300000); /* ...wait a moment... */
1315 (void)fd_sense_int(fdc, 0, 0); /* make ctrlr happy */
1316 }
1317
1318 /* If we're at track 0 first seek inwards. */
1319 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) {
1320 /* Seek some steps... */
1321 if (fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) {
1322 /* ...wait a moment... */
1323 DELAY(300000);
1324 /* make ctrlr happy: */
1325 (void)fd_sense_int(fdc, 0, 0);
1326 }
1327 }
1328
1329 for(i = 0; i < 2; i++) {
1330 /*
1331 * we must recalibrate twice, just in case the
1332 * heads have been beyond cylinder 76, since most
1333 * FDCs still barf when attempting to recalibrate
1334 * more than 77 steps
1335 */
1336 /* go back to 0: */
1337 if (fd_cmd(fdcu, 2, NE7CMD_RECAL, fdsu, 0) == 0) {
1338 /* a second being enough for full stroke seek*/
1339 DELAY(i == 0? 1000000: 300000);
1340
1341 /* anything responding? */
1342 if (fd_sense_int(fdc, &st0, 0) == 0 &&
1343 (st0 & NE7_ST0_EC) == 0)
1344 break; /* already probed succesfully */
1345 }
1346 }
1347
1348 set_motor(fdcu, fdsu, TURNOFF);
1349
1350 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */
1351 return(0);
1352
1353 fd->track = FD_NO_TRACK;
1354 fd->fdc = fdc;
1355 fd->fdsu = fdsu;
1356 fd->options = 0;
1357 printf("fdc%d: 1.44MB 3.5in PCMCIA\n", fdcu);
1358 fd->type = FD_1440;
1359
1360#ifdef DEVFS
1361 mynor = fdcu << 6;
1362 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK,
1363 UID_ROOT, GID_OPERATOR, 0640,
1364 "fd%d", fdu);
1365 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR,
1366 UID_ROOT, GID_OPERATOR, 0640,
1367 "rfd%d", fdu);
1368 /*
1369 * XXX this and the lookup in Fdopen() should be
1370 * data driven.
1371 */
1372 typemynor = mynor | FD_1440;
1373 typesize = fd_types[FD_1440 - 1].size / 2;
1374 /*
1375 * XXX all these conversions give bloated code and
1376 * confusing names.
1377 */
1378 if (typesize == 1476)
1379 typesize = 1480;
1380 if (typesize == 1722)
1381 typesize = 1720;
1382 fd->bdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor,
1383 DV_BLK, UID_ROOT, GID_OPERATOR,
1384 0640, "fd%d.%d", fdu, typesize);
1385 fd->cdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor,
1386 DV_CHR, UID_ROOT, GID_OPERATOR,
1387 0640,"rfd%d.%d", fdu, typesize);
1388 for (i = 0; i < MAXPARTITIONS; i++) {
1389 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0],
1390 "fd%d%c", fdu, 'a' + i);
1391 fd->cdevs[1 + NUMDENS + i] = devfs_makelink(fd->cdevs[0],
1392 "rfd%d%c", fdu, 'a' + i);
1393 }
1394#endif /* DEVFS */
1395 return (1);
1396}
1397#endif
1398
1399/****************************************************************************/
1400/* motor control stuff */
1401/* remember to not deselect the drive we're working on */
1402/****************************************************************************/
1403static void
1404set_motor(struct fdc_data *fdc, int fdsu, int turnon)
1405{
1406 int fdout = fdc->fdout;
1407 int needspecify = 0;
1408
1409#ifdef PC98
1410 outb(IO_FDPORT, (pc98_trans != 1 ? FDP_FDDEXC : 0)|FDP_PORTEXC);
1411 DELAY(10);
1412 fdout = FDO_DMAE|FDO_MTON;
1413#else
1414 if(turnon) {
1415 fdout &= ~FDO_FDSEL;
1416 fdout |= (FDO_MOEN0 << fdsu) + fdsu;
1417 } else
1418 fdout &= ~(FDO_MOEN0 << fdsu);
1419
1420 if(!turnon
1421 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0)
1422 /* gonna turn off the last drive, put FDC to bed */
1423 fdout &= ~ (FDO_FRST|FDO_FDMAEN);
1424 else {
1425 /* make sure controller is selected and specified */
1426 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0)
1427 needspecify = 1;
1428 fdout |= (FDO_FRST|FDO_FDMAEN);
1429 }
1430#endif
1431
1432 outb(fdc->baseport+FDOUT, fdout);
1433 fdc->fdout = fdout;
1434 TRACE1("[0x%x->FDOUT]", fdout);
1435
1436 if (needspecify) {
1437 /*
1438 * XXX
1439 * special case: since we have just woken up the FDC
1440 * from its sleep, we silently assume the command will
1441 * be accepted, and do not test for a timeout
1442 */
1443#ifdef PC98
1444 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1445 NE7_SPEC_1(4, 240), NE7_SPEC_2(2, 0),
1446 0);
1447#else
1448 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1449 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1450 0);
1451#endif
1452 if (fdc->flags & FDC_HAS_FIFO)
1453 (void) enable_fifo(fdc);
1454 }
1455}
1456
1457static void
1458fd_turnoff(void *xfd)
1459{
1460 int s;
1461 fd_p fd = xfd;
1462
1463 TRACE1("[fd%d: turnoff]", fd->fdu);
1464
1465 /*
1466 * Don't turn off the motor yet if the drive is active.
1467 * XXX shouldn't even schedule turnoff until drive is inactive
1468 * and nothing is queued on it.
1469 */
1470 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) {
1471 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz);
1472 return;
1473 }
1474
1475 s = splbio();
1476 fd->flags &= ~FD_MOTOR;
1477 set_motor(fd->fdc, fd->fdsu, TURNOFF);
1478 splx(s);
1479}
1480
1481static void
1482fd_motor_on(void *xfd)
1483{
1484 int s;
1485 fd_p fd = xfd;
1486
1487 s = splbio();
1488 fd->flags &= ~FD_MOTOR_WAIT;
1489 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT))
1490 {
1491 fdc_intr(fd->fdc);
1492 }
1493 splx(s);
1494}
1495
1496static void
1497fd_turnon(fd_p fd)
1498{
1499 if(!(fd->flags & FD_MOTOR))
1500 {
1501 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT);
1502 set_motor(fd->fdc, fd->fdsu, TURNON);
1503 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */
1504 }
1505}
1506
1507static void
1508fdc_reset(fdc_p fdc)
1509{
1510 /* Try a reset, keep motor on */
1511#ifdef PC98
1512 set_density(fdc);
1513 if (pc98_machine_type & M_EPSON_PC98)
1514 outb(fdc->baseport + FDOUT, 0xe8);
1515 else
1516 outb(fdc->baseport + FDOUT, 0xd8);
1517 DELAY(200);
1518 outb(fdc->baseport + FDOUT, 0x18);
1519 DELAY(10);
1520#else
1521 outb(fdc->baseport + FDOUT, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
1522 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
1523 DELAY(100);
1524 /* enable FDC, but defer interrupts a moment */
1525 outb(fdc->baseport + FDOUT, fdc->fdout & ~FDO_FDMAEN);
1526 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN);
1527 DELAY(100);
1528 outb(fdc->baseport + FDOUT, fdc->fdout);
1529 TRACE1("[0x%x->FDOUT]", fdc->fdout);
1530#endif
1531
1532 /* XXX after a reset, silently believe the FDC will accept commands */
1533#ifdef PC98
1534 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1535 NE7_SPEC_1(4, 240), NE7_SPEC_2(2, 0),
1536 0);
1537#else
1538 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1539 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1540 0);
1541#endif
1542 if (fdc->flags & FDC_HAS_FIFO)
1543 (void) enable_fifo(fdc);
1544}
1545
1546/****************************************************************************/
1547/* fdc in/out */
1548/****************************************************************************/
1549int
1550in_fdc(struct fdc_data *fdc)
1551{
1552 int baseport = fdc->baseport;
1553 int i, j = 100000;
1554 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM))
1555 != (NE7_DIO|NE7_RQM) && j-- > 0)
1556 if (i == NE7_RQM)
1557 return fdc_err(fdc, "ready for output in input\n");
1558 if (j <= 0)
1559 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
1560#ifdef FDC_DEBUG
1561 i = inb(baseport+FDDATA);
1562 TRACE1("[FDDATA->0x%x]", (unsigned char)i);
1563 return(i);
1564#else /* !FDC_DEBUG */
1565 return inb(baseport+FDDATA);
1566#endif /* FDC_DEBUG */
1567}
1568
1569/*
1570 * fd_in: Like in_fdc, but allows you to see if it worked.
1571 */
1572static int
1573fd_in(struct fdc_data *fdc, int *ptr)
1574{
1575 int baseport = fdc->baseport;
1576 int i, j = 100000;
1577 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM))
1578 != (NE7_DIO|NE7_RQM) && j-- > 0)
1579 if (i == NE7_RQM)
1580 return fdc_err(fdc, "ready for output in input\n");
1581 if (j <= 0)
1582 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
1583#ifdef FDC_DEBUG
1584 i = inb(baseport+FDDATA);
1585 TRACE1("[FDDATA->0x%x]", (unsigned char)i);
1586 *ptr = i;
1587 return 0;
1588#else /* !FDC_DEBUG */
1589 i = inb(baseport+FDDATA);
1590 if (ptr)
1591 *ptr = i;
1592 return 0;
1593#endif /* FDC_DEBUG */
1594}
1595
1596int
1597out_fdc(struct fdc_data *fdc, int x)
1598{
1599 int baseport = fdc->baseport;
1600 int i;
1601
1602 /* Check that the direction bit is set */
1603 i = 100000;
1604 while ((inb(baseport+FDSTS) & NE7_DIO) && i-- > 0);
1605 if (i <= 0) return fdc_err(fdc, "direction bit not set\n");
1606
1607 /* Check that the floppy controller is ready for a command */
1608 i = 100000;
1609 while ((inb(baseport+FDSTS) & NE7_RQM) == 0 && i-- > 0);
1610 if (i <= 0)
1611 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0);
1612
1613 /* Send the command and return */
1614 outb(baseport+FDDATA, x);
1615 TRACE1("[0x%x->FDDATA]", x);
1616 return (0);
1617}
1618
1619/****************************************************************************/
1620/* fdopen/fdclose */
1621/****************************************************************************/
1622int
1623Fdopen(dev_t dev, int flags, int mode, struct proc *p)
1624{
1625 fdu_t fdu = FDUNIT(minor(dev));
1626 int type = FDTYPE(minor(dev));
1627 fd_p fd;
1628 fdc_p fdc;
1629
1630 /* check bounds */
1631 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0)
1632 return (ENXIO);
1633 fdc = fd->fdc;
1634 if ((fdc == NULL) || (fd->type == NO_TYPE))
1635 return (ENXIO);
1636 if (type > NUMDENS)
1637 return (ENXIO);
1638#ifdef PC98
1639 if (pc98_fd_check_ready(fdu) == -1)
1640 return(EIO);
1641#endif
1642 if (type == 0)
1643 type = fd->type;
1644#ifndef PC98
1645 else {
1646 /*
1647 * For each type of basic drive, make sure we are trying
1648 * to open a type it can do,
1649 */
1650 if (type != fd->type) {
1651 switch (fd->type) {
1652 case FD_360:
1653 return (ENXIO);
1654 case FD_720:
1655 if ( type != FD_820
1656 && type != FD_800
1657 )
1658 return (ENXIO);
1659 break;
1660 case FD_1200:
1661 switch (type) {
1662 case FD_1480:
1663 type = FD_1480in5_25;
1664 break;
1665 case FD_1440:
1666 type = FD_1440in5_25;
1667 break;
1668 case FD_820:
1669 type = FD_820in5_25;
1670 break;
1671 case FD_800:
1672 type = FD_800in5_25;
1673 break;
1674 case FD_720:
1675 type = FD_720in5_25;
1676 break;
1677 case FD_360:
1678 type = FD_360in5_25;
1679 break;
1680 default:
1681 return(ENXIO);
1682 }
1683 break;
1684 case FD_1440:
1685 if ( type != FD_1720
1686 && type != FD_1480
1687 && type != FD_1200
1688 && type != FD_820
1689 && type != FD_800
1690 && type != FD_720
1691 )
1692 return(ENXIO);
1693 break;
1694 }
1695 }
1696 }
1697#endif
1698 fd->ft = fd_types + type - 1;
1699 fd->flags |= FD_OPEN;
1700 device_busy(fd->dev);
1701 device_busy(fd->fdc->fdc_dev);
1702 return 0;
1703}
1704
1705int
1706fdclose(dev_t dev, int flags, int mode, struct proc *p)
1707{
1708 fdu_t fdu = FDUNIT(minor(dev));
1709 struct fd_data *fd;
1710
1711 fd = devclass_get_softc(fd_devclass, fdu);
1712 fd->flags &= ~FD_OPEN;
1713 fd->options &= ~FDOPT_NORETRY;
1714
1715 return (0);
1716}
1717
1718/****************************************************************************/
1719/* fdstrategy */
1720/****************************************************************************/
1721void
1722fdstrategy(struct buf *bp)
1723{
1724 unsigned nblocks, blknum, cando;
1725 int s;
1726 fdu_t fdu;
1727 fdc_p fdc;
1728 fd_p fd;
1729 size_t fdblk;
1730
1731 fdu = FDUNIT(minor(bp->b_dev));
1732 fd = devclass_get_softc(fd_devclass, fdu);
1733 if (fd == 0)
1734 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)",
1735 (u_long)major(bp->b_dev), (u_long)minor(bp->b_dev));
1736 fdc = fd->fdc;
1737#ifdef FDC_YE
1738 if (fd->type == NO_TYPE) {
1739 bp->b_error = ENXIO;
1740 bp->b_flags |= B_ERROR;
1741 /*
1742 * I _refuse_ to use a goto
1743 */
1744 biodone(bp);
1745 return;
1746 };
1747#endif
1748
1749 fdblk = 128 << (fd->ft->secsize);
1750 if (!(bp->b_flags & B_FORMAT)) {
1751 if (bp->b_blkno < 0) {
1752 printf(
1753 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n",
1754 fdu, (u_long)bp->b_blkno, bp->b_bcount);
1755 bp->b_error = EINVAL;
1756 bp->b_flags |= B_ERROR;
1757 goto bad;
1758 }
1759 if ((bp->b_bcount % fdblk) != 0) {
1760 bp->b_error = EINVAL;
1761 bp->b_flags |= B_ERROR;
1762 goto bad;
1763 }
1764 }
1765
1766 /*
1767 * Set up block calculations.
1768 */
1769 if (bp->b_blkno > 20000000) {
1770 /*
1771 * Reject unreasonably high block number, prevent the
1772 * multiplication below from overflowing.
1773 */
1774 bp->b_error = EINVAL;
1775 bp->b_flags |= B_ERROR;
1776 goto bad;
1777 }
1778 blknum = (unsigned) bp->b_blkno * DEV_BSIZE/fdblk;
1779 nblocks = fd->ft->size;
1780 bp->b_resid = 0;
1781 if (blknum + (bp->b_bcount / fdblk) > nblocks) {
1782 if (blknum <= nblocks) {
1783 cando = (nblocks - blknum) * fdblk;
1784 bp->b_resid = bp->b_bcount - cando;
1785 if (cando == 0)
1786 goto bad; /* not actually bad but EOF */
1787 } else {
1788 bp->b_error = EINVAL;
1789 bp->b_flags |= B_ERROR;
1790 goto bad;
1791 }
1792 }
1793 bp->b_pblkno = bp->b_blkno;
1794 s = splbio();
1795 bufqdisksort(&fdc->head, bp);
1796 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */
1797
1798 /* Tell devstat we are starting on the transaction */
1799 devstat_start_transaction(&fd->device_stats);
1800
1801 fdstart(fdc);
1802 splx(s);
1803 return;
1804
1805bad:
1806 biodone(bp);
1807}
1808
1809/***************************************************************\
1810* fdstart *
1811* We have just queued something.. if the controller is not busy *
1812* then simulate the case where it has just finished a command *
1813* So that it (the interrupt routine) looks on the queue for more*
1814* work to do and picks up what we just added. *
1815* If the controller is already busy, we need do nothing, as it *
1816* will pick up our work when the present work completes *
1817\***************************************************************/
1818static void
1819fdstart(struct fdc_data *fdc)
1820{
1821 int s;
1822
1823 s = splbio();
1824 if(fdc->state == DEVIDLE)
1825 {
1826 fdc_intr(fdc);
1827 }
1828 splx(s);
1829}
1830
1831static void
1832fd_iotimeout(void *xfdc)
1833{
1834 fdc_p fdc;
1835 int s;
1836
1837 fdc = xfdc;
1838 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu);
1839
1840 /*
1841 * Due to IBM's brain-dead design, the FDC has a faked ready
1842 * signal, hardwired to ready == true. Thus, any command
1843 * issued if there's no diskette in the drive will _never_
1844 * complete, and must be aborted by resetting the FDC.
1845 * Many thanks, Big Blue!
1846 * The FDC must not be reset directly, since that would
1847 * interfere with the state machine. Instead, pretend that
1848 * the command completed but was invalid. The state machine
1849 * will reset the FDC and retry once.
1850 */
1851 s = splbio();
1852 fdc->status[0] = NE7_ST0_IC_IV;
1853 fdc->flags &= ~FDC_STAT_VALID;
1854 fdc->state = IOTIMEDOUT;
1855 fdc_intr(fdc);
1856 splx(s);
1857}
1858
1859/* just ensure it has the right spl */
1860static void
1861fd_pseudointr(void *xfdc)
1862{
1863 int s;
1864
1865 s = splbio();
1866 fdc_intr(xfdc);
1867 splx(s);
1868}
1869
1870/***********************************************************************\
1871* fdintr *
1872* keep calling the state machine until it returns a 0 *
1873* ALWAYS called at SPLBIO *
1874\***********************************************************************/
1875static void
1876fdc_intr(void *xfdc)
1877{
1878 fdc_p fdc = xfdc;
1879 while(fdstate(fdc))
1880 ;
1881}
1882
1883#ifdef FDC_YE
1884/*
1885 * magic pseudo-DMA initialization for YE FDC. Sets count and
1886 * direction
1887 */
1888#define SET_BCDR(wr,cnt,port) outb(port,(((cnt)-1) & 0xff)); \
1889 outb(port+1,((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f)))
1890
1891/*
1892 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy
1893 */
1894static int fdcpio(fdcu_t fdcu, long flags, caddr_t addr, u_int count)
1895{
1896 u_char *cptr = (u_char *)addr;
1897 fdc_p fdc = &fdc_data[fdcu];
1898 int io = fdc->baseport;
1899
1900 if (flags & B_READ) {
1901 if (fdc->state != PIOREAD) {
1902 fdc->state = PIOREAD;
1903 return(0);
1904 };
1905 SET_BCDR(0,count,io);
1906 insb(io+FDC_YE_DATAPORT,cptr,count);
1907 } else {
1908 outsb(io+FDC_YE_DATAPORT,cptr,count);
1909 SET_BCDR(0,count,io);
1910 };
1911 return(1);
1912}
1913#endif /* FDC_YE */
1914
1915/***********************************************************************\
1916* The controller state machine. *
1917* if it returns a non zero value, it should be called again immediatly *
1918\***********************************************************************/
1919static int
1920fdstate(fdc_p fdc)
1921{
1922 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3;
1923 unsigned blknum = 0, b_cylinder = 0;
1924 fdu_t fdu = fdc->fdu;
1925 fd_p fd;
1926 register struct buf *bp;
1927 struct fd_formb *finfo = NULL;
1928 size_t fdblk;
1929
1930 bp = fdc->bp;
1931 if (bp == NULL) {
1932 bp = bufq_first(&fdc->head);
1933 if (bp != NULL) {
1934 bufq_remove(&fdc->head, bp);
1935 fdc->bp = bp;
1936 }
1937 }
1938 if (bp == NULL) {
1939 /***********************************************\
1940 * nothing left for this controller to do *
1941 * Force into the IDLE state, *
1942 \***********************************************/
1943 fdc->state = DEVIDLE;
1944 if (fdc->fd) {
1945 device_print_prettyname(fdc->fdc_dev);
1946 printf("unexpected valid fd pointer\n");
1947 fdc->fd = (fd_p) 0;
1948 fdc->fdu = -1;
1949 }
1950 TRACE1("[fdc%d IDLE]", fdc->fdcu);
1951 return (0);
1952 }
1953 fdu = FDUNIT(minor(bp->b_dev));
1954 fd = devclass_get_softc(fd_devclass, fdu);
1955 fdblk = 128 << fd->ft->secsize;
1956 if (fdc->fd && (fd != fdc->fd)) {
1957 device_print_prettyname(fd->dev);
1958 printf("confused fd pointers\n");
1959 }
1960 read = bp->b_flags & B_READ;
1961 format = bp->b_flags & B_FORMAT;
1962 if (format) {
1963 finfo = (struct fd_formb *)bp->b_data;
1964 fd->skip = (char *)&(finfo->fd_formb_cylno(0))
1965 - (char *)finfo;
1966 }
1967 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) {
1968 blknum = (unsigned) bp->b_pblkno * DEV_BSIZE/fdblk +
1969 fd->skip/fdblk;
1970 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads);
1971 }
1972 TRACE1("fd%d", fdu);
1973 TRACE1("[%s]", fdstates[fdc->state]);
1974 TRACE1("(0x%x)", fd->flags);
1975 untimeout(fd_turnoff, fd, fd->toffhandle);
1976 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz);
1977 switch (fdc->state)
1978 {
1979 case DEVIDLE:
1980 case FINDWORK: /* we have found new work */
1981 fdc->retry = 0;
1982 fd->skip = 0;
1983 fdc->fd = fd;
1984 fdc->fdu = fdu;
1985#ifdef PC98
1986 pc98_trans = fd->ft->trans;
1987 if (pc98_trans_prev != pc98_trans) {
1988 int i;
1989 set_density(fdc);
1990 for (i = 0; i < 10; i++) {
1991 outb(0x5f, 0);
1992 outb(0x5f, 0);
1993 }
1994 pc98_trans_prev = pc98_trans;
1995 }
1996 if (pc98_trans != fd->pc98_trans) {
1997 if (pc98_trans != 1 &&
1998 (PC98_SYSTEM_PARAMETER(0x5ae) >> fdu) & 0x01) {
1999 outb(0x4be, (fdu << 5) | 0x10 | (pc98_trans >> 1));
2000 outb(0x5f, 0);
2001 outb(0x5f, 0);
2002 }
2003 fd->pc98_trans = pc98_trans;
2004 }
2005#else
2006 outb(fdc->baseport+FDCTL, fd->ft->trans);
2007#endif
2008 TRACE1("[0x%x->FDCTL]", fd->ft->trans);
2009 /*******************************************************\
2010 * If the next drive has a motor startup pending, then *
2011 * it will start up in its own good time *
2012 \*******************************************************/
2013 if(fd->flags & FD_MOTOR_WAIT) {
2014 fdc->state = MOTORWAIT;
2015 return (0); /* come back later */
2016 }
2017 /*******************************************************\
2018 * Maybe if it's not starting, it SHOULD be starting *
2019 \*******************************************************/
2020#ifdef EPSON_NRDISK
2021 if (fdu != nrdu) {
2022 if (!(fd->flags & FD_MOTOR))
2023 {
2024 fdc->state = MOTORWAIT;
2025 fd_turnon(fdu);
2026 return(0);
2027 }
2028 else /* at least make sure we are selected */
2029 {
2030 set_motor(fdcu, fd->fdsu, TURNON);
2031 }
2032 }
2033#else /* !EPSON_NRDISK */
2034 if (!(fd->flags & FD_MOTOR))
2035 {
2036 fdc->state = MOTORWAIT;
2037 fd_turnon(fd);
2038 return (0);
2039 }
2040 else /* at least make sure we are selected */
2041 {
2042 set_motor(fdc, fd->fdsu, TURNON);
2043 }
2044#endif
2045 if (fdc->flags & FDC_NEEDS_RESET) {
2046 fdc->state = RESETCTLR;
2047 fdc->flags &= ~FDC_NEEDS_RESET;
2048 } else
2049 fdc->state = DOSEEK;
2050 break;
2051 case DOSEEK:
2052 if (b_cylinder == (unsigned)fd->track)
2053 {
2054 fdc->state = SEEKCOMPLETE;
2055 break;
2056 }
2057#ifdef PC98
2058 pc98_fd_check_ready(fdu);
2059#endif
2060 if (fd_cmd(fdc, 3, NE7CMD_SEEK,
2061 fd->fdsu, b_cylinder * fd->ft->steptrac,
2062 0))
2063 {
2064 /*
2065 * seek command not accepted, looks like
2066 * the FDC went off to the Saints...
2067 */
2068 fdc->retry = 6; /* try a reset */
2069 return(retrier(fdc));
2070 }
2071 fd->track = FD_NO_TRACK;
2072 fdc->state = SEEKWAIT;
2073 return(0); /* will return later */
2074 case SEEKWAIT:
2075 /* allow heads to settle */
2076 timeout(fd_pseudointr, fdc, hz / 16);
2077 fdc->state = SEEKCOMPLETE;
2078 return(0); /* will return later */
2079 case SEEKCOMPLETE : /* SEEK DONE, START DMA */
2080 /* Make sure seek really happened*/
2081 if(fd->track == FD_NO_TRACK) {
2082 int descyl = b_cylinder * fd->ft->steptrac;
2083 do {
2084 /*
2085 * This might be a "ready changed" interrupt,
2086 * which cannot really happen since the
2087 * RDY pin is hardwired to + 5 volts. This
2088 * generally indicates a "bouncing" intr
2089 * line, so do one of the following:
2090 *
2091 * When running on an enhanced FDC that is
2092 * known to not go stuck after responding
2093 * with INVALID, fetch all interrupt states
2094 * until seeing either an INVALID or a
2095 * real interrupt condition.
2096 *
2097 * When running on a dumb old NE765, give
2098 * up immediately. The controller will
2099 * provide up to four dummy RC interrupt
2100 * conditions right after reset (for the
2101 * corresponding four drives), so this is
2102 * our only chance to get notice that it
2103 * was not the FDC that caused the interrupt.
2104 */
2105 if (fd_sense_int(fdc, &st0, &cyl)
2106 == FD_NOT_VALID)
2107 return 0;
2108 if(fdc->fdct == FDC_NE765
2109 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC)
2110 return 0; /* hope for a real intr */
2111 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
2112
2113 if (0 == descyl) {
2114 int failed = 0;
2115 /*
2116 * seek to cyl 0 requested; make sure we are
2117 * really there
2118 */
2119 if (fd_sense_drive_status(fdc, &st3))
2120 failed = 1;
2121#ifdef EPSON_NRDISK
2122 if (fdu == nrdu) st3 = NE7_ST3_T0;
2123#endif /* EPSON_NRDISK */
2124 if ((st3 & NE7_ST3_T0) == 0) {
2125 printf(
2126 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n",
2127 fdu, st3, NE7_ST3BITS);
2128 failed = 1;
2129 }
2130
2131 if (failed) {
2132 if(fdc->retry < 3)
2133 fdc->retry = 3;
2134 return (retrier(fdc));
2135 }
2136 }
2137#ifdef EPSON_NRDISK
2138 if (fdu == nrdu) cyl = descyl;
2139#endif
2140
2141 if (cyl != descyl) {
2142 printf(
2143 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n",
2144 fdu, descyl, cyl, st0);
2145 if (fdc->retry < 3)
2146 fdc->retry = 3;
2147 return (retrier(fdc));
2148 }
2149 }
2150
2151 fd->track = b_cylinder;
2152#ifdef EPSON_NRDISK
2153 if (fdu != nrdu) {
2154#endif /* EPSON_NRDISK */
2155#ifdef FDC_YE
2156 if (!(fdc->flags & FDC_PCMCIA))
2157#endif
2158 isa_dmastart(bp->b_flags, bp->b_data+fd->skip,
2159 format ? bp->b_bcount : fdblk, fdc->dmachan);
2160 sectrac = fd->ft->sectrac;
2161 sec = blknum % (sectrac * fd->ft->heads);
2162 head = sec / sectrac;
2163 sec = sec % sectrac + 1;
2164 fd->hddrv = ((head&1)<<2)+fdu;
2165
2166 if(format || !read)
2167 {
2168 /* make sure the drive is writable */
2169 if(fd_sense_drive_status(fdc, &st3) != 0)
2170 {
2171 /* stuck controller? */
2172 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2173 format ? bp->b_bcount : fdblk,
2174 fdc->dmachan);
2175 fdc->retry = 6; /* reset the beast */
2176 return (retrier(fdc));
2177 }
2178 if(st3 & NE7_ST3_WP)
2179 {
2180 /*
2181 * XXX YES! this is ugly.
2182 * in order to force the current operation
2183 * to fail, we will have to fake an FDC
2184 * error - all error handling is done
2185 * by the retrier()
2186 */
2187 fdc->status[0] = NE7_ST0_IC_AT;
2188 fdc->status[1] = NE7_ST1_NW;
2189 fdc->status[2] = 0;
2190 fdc->status[3] = fd->track;
2191 fdc->status[4] = head;
2192 fdc->status[5] = sec;
2193 fdc->retry = 8; /* break out immediately */
2194 fdc->state = IOTIMEDOUT; /* not really... */
2195 return (1);
2196 }
2197 }
2198
2199 if (format) {
2200#ifdef FDC_YE
2201 if (fdc->flags & FDC_PCMCIA)
2202 (void)fdcpio(fdcu,bp->b_flags,
2203 bp->b_data+fd->skip,
2204 bp->b_bcount);
2205#endif
2206 /* formatting */
2207 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu,
2208 finfo->fd_formb_secshift,
2209 finfo->fd_formb_nsecs,
2210 finfo->fd_formb_gaplen,
2211 finfo->fd_formb_fillbyte, 0)) {
2212 /* controller fell over */
2213 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2214 format ? bp->b_bcount : fdblk,
2215 fdc->dmachan);
2216 fdc->retry = 6;
2217 return (retrier(fdc));
2218 }
2219 } else {
2220#ifdef FDC_YE
2221 if (fdc->flags & FDC_PCMCIA) {
2222 /*
2223 * this seems to be necessary even when
2224 * reading data
2225 */
2226 SET_BCDR(1,fdblk,fdc->baseport);
2227
2228 /*
2229 * perform the write pseudo-DMA before
2230 * the WRITE command is sent
2231 */
2232 if (!read)
2233 (void)fdcpio(fdcu,bp->b_flags,
2234 bp->b_data+fd->skip,
2235 fdblk);
2236 }
2237#endif
2238 if (fd_cmd(fdc, 9,
2239 (read ? NE7CMD_READ : NE7CMD_WRITE),
2240 head << 2 | fdu, /* head & unit */
2241 fd->track, /* track */
2242 head,
2243 sec, /* sector + 1 */
2244 fd->ft->secsize, /* sector size */
2245 sectrac, /* sectors/track */
2246 fd->ft->gap, /* gap size */
2247 fd->ft->datalen, /* data length */
2248 0)) {
2249 /* the beast is sleeping again */
2250 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2251 format ? bp->b_bcount : fdblk,
2252 fdc->dmachan);
2253 fdc->retry = 6;
2254 return (retrier(fdc));
2255 }
2256 }
2257#ifdef FDC_YE
2258 if (fdc->flags & FDC_PCMCIA)
2259 /*
2260 * if this is a read, then simply await interrupt
2261 * before performing PIO
2262 */
2263 if (read && !fdcpio(fdcu,bp->b_flags,
2264 bp->b_data+fd->skip,fdblk)) {
2265 fd->tohandle = timeout(fd_iotimeout,
2266 (caddr_t)fdcu, hz);
2267 return(0); /* will return later */
2268 };
2269
2270 /*
2271 * write (or format) operation will fall through and
2272 * await completion interrupt
2273 */
2274#endif
2275 fdc->state = IOCOMPLETE;
2276 fd->tohandle = timeout(fd_iotimeout, fdc, hz);
2277 return (0); /* will return later */
2278#ifdef EPSON_NRDISK
2279 }
2280 else {
2281 nrdblkn = (nrd_t)((unsigned long)bp->b_blkno*DEV_BSIZE/fdblk
2282 + fd->skip/fdblk);
2283 nrd_LED_on();
2284 nrd_addrset(fdblk * nrdblkn);
2285 while (!nrd_check_ready()) DELAY(1);
2286 if (read) epson_insw(P_NRD_DATA,
2287 bp->b_data + fd->skip,
2288 fdblk / sizeof(short));
2289 else epson_outsw(P_NRD_DATA,
2290 bp->b_data + fd->skip,
2291 (format ? bp->b_bcount : fdblk)
2292 / sizeof(short));
2293
2294 blknum = (unsigned long)bp->b_blkno*DEV_BSIZE/fdblk
2295 + fd->skip/fdblk;
2296 sectrac = fd->ft->sectrac;
2297 sec = blknum % (sectrac * fd->ft->heads);
2298 head = sec / sectrac;
2299 sec = sec % sectrac + 1;
2300 fd->hddrv = ((head&1)<<2)+fdu;
2301
2302 if (nrdsec++ >= nrd_sec())
2303 nrdaddr = (nrd_t)(fd->track * 8 + head * 4);
2304 nrdsec = sec;
2305 fdc->state = IOCOMPLETE;
2306 }
2307#endif
2308#ifdef FDC_YE
2309 case PIOREAD:
2310 /*
2311 * actually perform the PIO read. The IOCOMPLETE case
2312 * removes the timeout for us.
2313 */
2314 (void)fdcpio(fdcu,bp->b_flags,bp->b_data+fd->skip,fdblk);
2315 fdc->state = IOCOMPLETE;
2316 /* FALLTHROUGH */
2317#endif
2318 case IOCOMPLETE: /* IO DONE, post-analyze */
2319#ifdef EPSON_NRDISK
2320 if (fdu != nrdu)
2321 untimeout(fd_iotimeout, fdc, fd->tohandle);
2322#else
2323 untimeout(fd_iotimeout, fdc, fd->tohandle);
2324#endif
2325
2326 if (fd_read_status(fdc, fd->fdsu)) {
2327 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2328 format ? bp->b_bcount : fdblk,
2329 fdc->dmachan);
2330 if (fdc->retry < 6)
2331 fdc->retry = 6; /* force a reset */
2332 return (retrier(fdc));
2333 }
2334
2335 fdc->state = IOTIMEDOUT;
2336
2337 /* FALLTHROUGH */
2338
2339 case IOTIMEDOUT:
2340#ifdef EPSON_NRDISK
2341 if (fdu != nrdu) {
2342#endif /* EPSON_NRDISK */
2343#ifdef FDC_YE
2344 if (!(fdc->flags & FDC_PCMCIA))
2345#endif
2346 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2347 format ? bp->b_bcount : fdblk, fdc->dmachan);
2348#ifdef EPSON_NRDISK
2349 }
2350 else nrd_LED_off();
2351#endif /* EPSON_NRDISK */
2352 if (fdc->status[0] & NE7_ST0_IC) {
2353 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
2354 && fdc->status[1] & NE7_ST1_OR) {
2355 /*
2356 * DMA overrun. Someone hogged the bus
2357 * and didn't release it in time for the
2358 * next FDC transfer.
2359 * Just restart it, don't increment retry
2360 * count. (vak)
2361 */
2362 fdc->state = SEEKCOMPLETE;
2363 return (1);
2364 }
2365 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV
2366 && fdc->retry < 6)
2367 fdc->retry = 6; /* force a reset */
2368 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
2369 && fdc->status[2] & NE7_ST2_WC
2370 && fdc->retry < 3)
2371 fdc->retry = 3; /* force recalibrate */
2372 return (retrier(fdc));
2373 }
2374 /* All OK */
2375 fd->skip += fdblk;
2376 if (!format && fd->skip < bp->b_bcount - bp->b_resid) {
2377 /* set up next transfer */
2378 fdc->state = DOSEEK;
2379 } else {
2380 /* ALL DONE */
2381 fd->skip = 0;
2382 fdc->bp = NULL;
2383 /* Tell devstat we have finished with the transaction */
2384 devstat_end_transaction(&fd->device_stats,
2385 bp->b_bcount - bp->b_resid,
2386 DEVSTAT_TAG_NONE,
2387 (bp->b_flags & B_READ) ?
2388 DEVSTAT_READ : DEVSTAT_WRITE);
2389 biodone(bp);
2390 fdc->fd = (fd_p) 0;
2391 fdc->fdu = -1;
2392 fdc->state = FINDWORK;
2393 }
2394 return (1);
2395 case RESETCTLR:
2396 fdc_reset(fdc);
2397 fdc->retry++;
2398 fdc->state = RESETCOMPLETE;
2399 return (0);
2400 case RESETCOMPLETE:
2401 /*
2402 * Discard all the results from the reset so that they
2403 * can't cause an unexpected interrupt later.
2404 */
2405 for (i = 0; i < 4; i++)
2406 (void)fd_sense_int(fdc, &st0, &cyl);
2407 fdc->state = STARTRECAL;
2408 /* Fall through. */
2409 case STARTRECAL:
2410#ifdef PC98
2411 pc98_fd_check_ready(fdu);
2412#endif
2413 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) {
2414 /* arrgl */
2415 fdc->retry = 6;
2416 return (retrier(fdc));
2417 }
2418 fdc->state = RECALWAIT;
2419 return (0); /* will return later */
2420 case RECALWAIT:
2421 /* allow heads to settle */
2422 timeout(fd_pseudointr, fdc, hz / 8);
2423 fdc->state = RECALCOMPLETE;
2424 return (0); /* will return later */
2425 case RECALCOMPLETE:
2426 do {
2427 /*
2428 * See SEEKCOMPLETE for a comment on this:
2429 */
2430 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID)
2431 return 0;
2432 if(fdc->fdct == FDC_NE765
2433 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC)
2434 return 0; /* hope for a real intr */
2435 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
2436#ifdef EPSON_NRDISK
2437 if (fdu == nrdu) {
2438 st0 = NE7_ST0_IC_NT;
2439 cyl = 0;
2440 }
2441#endif
2442 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0)
2443 {
2444 if(fdc->retry > 3)
2445 /*
2446 * a recalibrate from beyond cylinder 77
2447 * will "fail" due to the FDC limitations;
2448 * since people used to complain much about
2449 * the failure message, try not logging
2450 * this one if it seems to be the first
2451 * time in a line
2452 */
2453 printf("fd%d: recal failed ST0 %b cyl %d\n",
2454 fdu, st0, NE7_ST0BITS, cyl);
2455 if(fdc->retry < 3) fdc->retry = 3;
2456 return (retrier(fdc));
2457 }
2458 fd->track = 0;
2459 /* Seek (probably) necessary */
2460 fdc->state = DOSEEK;
2461 return (1); /* will return immediatly */
2462 case MOTORWAIT:
2463 if(fd->flags & FD_MOTOR_WAIT)
2464 {
2465 return (0); /* time's not up yet */
2466 }
2467 if (fdc->flags & FDC_NEEDS_RESET) {
2468 fdc->state = RESETCTLR;
2469 fdc->flags &= ~FDC_NEEDS_RESET;
2470 } else {
2471 /*
2472 * If all motors were off, then the controller was
2473 * reset, so it has lost track of the current
2474 * cylinder. Recalibrate to handle this case.
2475 * But first, discard the results of the reset.
2476 */
2477 fdc->state = RESETCOMPLETE;
2478 }
2479 return (1); /* will return immediatly */
2480 default:
2481 device_print_prettyname(fdc->fdc_dev);
2482 printf("unexpected FD int->");
2483 if (fd_read_status(fdc, fd->fdsu) == 0)
2484 printf("FDC status :%x %x %x %x %x %x %x ",
2485 fdc->status[0],
2486 fdc->status[1],
2487 fdc->status[2],
2488 fdc->status[3],
2489 fdc->status[4],
2490 fdc->status[5],
2491 fdc->status[6] );
2492 else
2493 printf("No status available ");
2494 if (fd_sense_int(fdc, &st0, &cyl) != 0)
2495 {
2496 printf("[controller is dead now]\n");
2497 return (0);
2498 }
2499 printf("ST0 = %x, PCN = %x\n", st0, cyl);
2500 return (0);
2501 }
2502 /*XXX confusing: some branches return immediately, others end up here*/
2503 return (1); /* Come back immediatly to new state */
2504}
2505
2506static int
2507retrier(struct fdc_data *fdc)
2508{
2509 register struct buf *bp;
2510 struct fd_data *fd;
2511 int fdu;
2512
2513 bp = fdc->bp;
2514
2515 /* XXX shouldn't this be cached somewhere? */
2516 fdu = FDUNIT(minor(bp->b_dev));
2517 fd = devclass_get_softc(fd_devclass, fdu);
2518 if (fd->options & FDOPT_NORETRY)
2519 goto fail;
2520
2521 switch (fdc->retry) {
2522 case 0: case 1: case 2:
2523 fdc->state = SEEKCOMPLETE;
2524 break;
2525 case 3: case 4: case 5:
2526 fdc->state = STARTRECAL;
2527 break;
2528 case 6:
2529 fdc->state = RESETCTLR;
2530 break;
2531 case 7:
2532 break;
2533 default:
2534 fail:
2535 {
2536 dev_t sav_b_dev = bp->b_dev;
2537 /* Trick diskerr */
2538 bp->b_dev = makedev(major(bp->b_dev),
2539 (FDUNIT(minor(bp->b_dev))<<3)|RAW_PART);
2540 diskerr(bp, "fd", "hard error", LOG_PRINTF,
2541 fdc->fd->skip / DEV_BSIZE,
2542 (struct disklabel *)NULL);
2543 bp->b_dev = sav_b_dev;
2544 if (fdc->flags & FDC_STAT_VALID)
2545 {
2546 printf(
2547 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n",
2548 fdc->status[0], NE7_ST0BITS,
2549 fdc->status[1], NE7_ST1BITS,
2550 fdc->status[2], NE7_ST2BITS,
2551 fdc->status[3], fdc->status[4],
2552 fdc->status[5]);
2553 }
2554 else
2555 printf(" (No status)\n");
2556 }
2557 bp->b_flags |= B_ERROR;
2558 bp->b_error = EIO;
2559 bp->b_resid += bp->b_bcount - fdc->fd->skip;
2560 fdc->bp = NULL;
2561
2562 /* Tell devstat we have finished with the transaction */
2563 devstat_end_transaction(&fdc->fd->device_stats,
2564 bp->b_bcount - bp->b_resid,
2565 DEVSTAT_TAG_NONE,
2566 (bp->b_flags & B_READ) ? DEVSTAT_READ :
2567 DEVSTAT_WRITE);
2568 fdc->fd->skip = 0;
2569 biodone(bp);
2570 fdc->state = FINDWORK;
2571 fdc->flags |= FDC_NEEDS_RESET;
2572 fdc->fd = (fd_p) 0;
2573 fdc->fdu = -1;
2574 return (1);
2575 }
2576 fdc->retry++;
2577 return (1);
2578}
2579
2580static int
2581fdformat(dev, finfo, p)
2582 dev_t dev;
2583 struct fd_formb *finfo;
2584 struct proc *p;
2585{
2586 fdu_t fdu;
2587 fd_p fd;
2588
2589 struct buf *bp;
2590 int rv = 0, s;
2591 size_t fdblk;
2592
2593 fdu = FDUNIT(minor(dev));
2594 fd = devclass_get_softc(fd_devclass, fdu);
2595 fdblk = 128 << fd->ft->secsize;
2596
2597 /* set up a buffer header for fdstrategy() */
2598 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT);
2599 if(bp == 0)
2600 return ENOBUFS;
2601 /*
2602 * keep the process from being swapped
2603 */
2604 PHOLD(p);
2605 bzero((void *)bp, sizeof(struct buf));
| 51 *
52 */
53
54#include "fd.h"
55#include "opt_devfs.h"
56#include "opt_fdc.h"
57
58#if NFDC > 0
59
60#include <sys/param.h>
61#include <sys/systm.h>
62#include <sys/kernel.h>
63#include <sys/buf.h>
64#include <sys/bus.h>
65#include <sys/conf.h>
66#include <sys/disklabel.h>
67#include <sys/devicestat.h>
68#include <sys/fcntl.h>
69#include <sys/malloc.h>
70#include <sys/module.h>
71#include <sys/proc.h>
72#include <sys/syslog.h>
73
74#include <sys/bus.h>
75#include <machine/bus.h>
76#include <sys/rman.h>
77
78#include <machine/clock.h>
79#include <machine/ioctl_fd.h>
80#include <machine/resource.h>
81#include <machine/stdarg.h>
82
83#ifdef DEVFS
84#include <sys/devfsext.h>
85#endif /* DEVFS */
86
87#include <isa/isavar.h>
88#ifdef PC98
89#include <pc98/pc98/pc98.h>
90#include <pc98/pc98/pc98_machdep.h>
91#include <pc98/pc98/epsonio.h>
92#include <i386/isa/isa_dma.h>
93#include <pc98/pc98/fdreg.h>
94#else
95#include <i386/isa/isa.h>
96#include <i386/isa/isa_dma.h>
97#include <i386/isa/fdreg.h>
98#include <isa/rtc.h>
99#endif
100#include <isa/fdc.h>
101
102#ifdef FDC_YE
103#undef FDC_YE
104#warning "fix FDC_YE! - newbus casualty"
105#endif
106
107/* misuse a flag to identify format operation */
108#define B_FORMAT B_XXX
109
110/* configuration flags */
111#define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */
112#ifdef FDC_YE
113#define FDC_IS_PCMCIA (1 << 1) /* if successful probe, then it's
114 a PCMCIA device */
115#endif
116
117/* internally used only, not really from CMOS: */
118#define RTCFDT_144M_PRETENDED 0x1000
119
120/* error returns for fd_cmd() */
121#define FD_FAILED -1
122#define FD_NOT_VALID -2
123#define FDC_ERRMAX 100 /* do not log more */
124
125#ifdef PC98
126#define NUMTYPES 5
127#define NUMDENS NUMTYPES
128#else
129#define NUMTYPES 14
130#define NUMDENS (NUMTYPES - 6)
131#endif
132
133/* These defines (-1) must match index for fd_types */
134#define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */
135#define NO_TYPE 0 /* must match NO_TYPE in ft.c */
136#ifdef PC98
137#define FDT_NONE 0 /* none present */
138#define FDT_12M 1 /* 1M/640K FDD */
139#define FDT_144M 2 /* 1.44M/1M/640K FDD */
140
141#define FD_1200 1
142#define FD_1232 2
143#define FD_720 3
144#define FD_640 4
145#define FD_1440 5
146#else
147#define FD_1720 1
148#define FD_1480 2
149#define FD_1440 3
150#define FD_1200 4
151#define FD_820 5
152#define FD_800 6
153#define FD_720 7
154#define FD_360 8
155
156#define FD_1480in5_25 9
157#define FD_1440in5_25 10
158#define FD_820in5_25 11
159#define FD_800in5_25 12
160#define FD_720in5_25 13
161#define FD_360in5_25 14
162#endif
163
164
165static struct fd_type fd_types[NUMTYPES] =
166{
167#ifdef PC98
168{ 15,2,0xFF,0x1B,80,2400,1,0,2,0x54,1 }, /* 1.2 meg HD floppy */
169{ 8,3,0xFF,0x35,77,1232,1,0,2,0x74,1 }, /* 1.2 meg HD floppy 1024/sec */
170{ 9,2,0xFF,0x20,80,1440,1,1,2,0x50,1 }, /* 720k floppy in 1.2meg drive */
171{ 8,2,0xFF,0x2A,80,1280,1,1,2,0x50,1 }, /* 640k floppy in 1.2meg drive */
172{ 18,2,0xFF,0x1B,80,2880,1,2,2,0x54,1 }, /* 1.44 meg HD 3.5in floppy */
173#else
174{ 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */
175{ 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */
176{ 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */
177{ 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */
178{ 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */
179{ 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */
180{ 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */
181{ 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */
182
183{ 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */
184{ 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */
185{ 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */
186{ 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */
187{ 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */
188{ 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */
189#endif
190};
191
192#ifdef PC98
193#define DRVS_PER_CTLR 4 /* 4 floppies */
194#else
195#define DRVS_PER_CTLR 2 /* 2 floppies */
196#endif
197
198/***********************************************************************\
199* Per controller structure. *
200\***********************************************************************/
201static devclass_t fdc_devclass;
202
203/***********************************************************************\
204* Per drive structure. *
205* N per controller (DRVS_PER_CTLR) *
206\***********************************************************************/
207struct fd_data {
208 struct fdc_data *fdc; /* pointer to controller structure */
209 int fdsu; /* this units number on this controller */
210 int type; /* Drive type (FD_1440...) */
211 struct fd_type *ft; /* pointer to the type descriptor */
212 int flags;
213#define FD_OPEN 0x01 /* it's open */
214#define FD_ACTIVE 0x02 /* it's active */
215#define FD_MOTOR 0x04 /* motor should be on */
216#define FD_MOTOR_WAIT 0x08 /* motor coming up */
217 int skip;
218 int hddrv;
219#define FD_NO_TRACK -2
220 int track; /* where we think the head is */
221 int options; /* user configurable options, see ioctl_fd.h */
222 struct callout_handle toffhandle;
223 struct callout_handle tohandle;
224 struct devstat device_stats;
225#ifdef DEVFS
226 void *bdevs[1 + NUMDENS + MAXPARTITIONS];
227 void *cdevs[1 + NUMDENS + MAXPARTITIONS];
228#endif
229#ifdef PC98
230 int pc98_trans;
231#endif
232 device_t dev;
233 fdu_t fdu;
234};
235static devclass_t fd_devclass;
236
237#ifdef EPSON_NRDISK
238typedef unsigned int nrd_t;
239
240#define P_NRD_ADDRH 0xc24
241#define P_NRD_ADDRM 0xc22
242#define P_NRD_ADDRL 0xc20
243#define P_NRD_CHECK 0xc20
244#define P_NRD_DATA 0xc26
245#define P_NRD_LED 0xc36
246#define B_NRD_CHK 0x80
247#define B_NRD_LED 0x40
248#define A_NRD_INFO 0x2
249#define A_NRD_BASE 0x400
250#define NRD_STATUS 0x0
251#define NRD_ST0_HD 0x04
252
253static fdu_t nrdu=-1;
254static int nrdsec=0;
255static nrd_t nrdblkn=0;
256static nrd_t nrdaddr=0x0;
257
258#define nrd_check_ready() ({ \
259 (epson_inb(P_NRD_CHECK) & B_NRD_CHK) ? 0 : 1; \
260 })
261#define nrd_LED_on() epson_outb(P_NRD_LED, B_NRD_LED)
262#define nrd_LED_off() epson_outb(P_NRD_LED, ~B_NRD_LED)
263#define nrd_trac() ((int)(nrd_info(nrdaddr) & 0xff))
264#define nrd_head() ((int)((nrd_info(nrdaddr) >> 8) & 0xff))
265#define nrd_sec() ((int)(nrd_info(nrdaddr + 2) & 0xff))
266#define nrd_secsize() ((int)((nrd_info(A_NRD_INFO) >> 8) & 0xff))
267#define nrd_addrset(p) nrd_addr((nrd_t)((nrd_t)p+A_NRD_BASE))
268
269static inline void
270nrd_addr(addr)
271 nrd_t addr;
272{
273 epson_outb(P_NRD_ADDRH, (u_char)((addr >> 16) & 0x1f));
274 epson_outb(P_NRD_ADDRM, (u_char)((addr >> 8) & 0xff));
275 epson_outb(P_NRD_ADDRL, (u_char)(addr & 0xff));
276}
277
278static inline u_short
279nrd_info(addr)
280 nrd_t addr;
281{
282 u_short tmp;
283
284 nrd_addr(addr);
285 outb(0x43f, 0x42);
286 tmp = (short)inw(P_NRD_DATA);
287 outb(0x43f, 0x40);
288 return ((u_short)tmp);
289}
290#endif /* EPSON_NRDISK */
291
292/***********************************************************************\
293* Throughout this file the following conventions will be used: *
294* fd is a pointer to the fd_data struct for the drive in question *
295* fdc is a pointer to the fdc_data struct for the controller *
296* fdu is the floppy drive unit number *
297* fdcu is the floppy controller unit number *
298* fdsu is the floppy drive unit number on that controller. (sub-unit) *
299\***********************************************************************/
300
301#ifdef FDC_YE
302#include "card.h"
303static int yeattach(struct isa_device *);
304#endif
305
306/* needed for ft driver, thus exported */
307int in_fdc(struct fdc_data *);
308int out_fdc(struct fdc_data *, int);
309
310/* internal functions */
311static void fdc_add_device(device_t, const char *, int);
312static void fdc_intr(void *);
313static void set_motor(struct fdc_data *, int, int);
314# define TURNON 1
315# define TURNOFF 0
316static timeout_t fd_turnoff;
317static timeout_t fd_motor_on;
318static void fd_turnon(struct fd_data *);
319static void fdc_reset(fdc_p);
320static int fd_in(struct fdc_data *, int *);
321static void fdstart(struct fdc_data *);
322static timeout_t fd_iotimeout;
323static timeout_t fd_pseudointr;
324static int fdstate(struct fdc_data *);
325static int retrier(struct fdc_data *);
326static int fdformat(dev_t, struct fd_formb *, struct proc *);
327
328static int enable_fifo(fdc_p fdc);
329
330static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */
331
332
333#define DEVIDLE 0
334#define FINDWORK 1
335#define DOSEEK 2
336#define SEEKCOMPLETE 3
337#define IOCOMPLETE 4
338#define RECALCOMPLETE 5
339#define STARTRECAL 6
340#define RESETCTLR 7
341#define SEEKWAIT 8
342#define RECALWAIT 9
343#define MOTORWAIT 10
344#define IOTIMEDOUT 11
345#define RESETCOMPLETE 12
346#ifdef FDC_YE
347#define PIOREAD 13
348#endif
349
350#ifdef FDC_DEBUG
351static char const * const fdstates[] =
352{
353"DEVIDLE",
354"FINDWORK",
355"DOSEEK",
356"SEEKCOMPLETE",
357"IOCOMPLETE",
358"RECALCOMPLETE",
359"STARTRECAL",
360"RESETCTLR",
361"SEEKWAIT",
362"RECALWAIT",
363"MOTORWAIT",
364"IOTIMEDOUT",
365"RESETCOMPLETE",
366#ifdef FDC_YE
367"PIOREAD",
368#endif
369};
370
371/* CAUTION: fd_debug causes huge amounts of logging output */
372static int volatile fd_debug = 0;
373#define TRACE0(arg) if(fd_debug) printf(arg)
374#define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2)
375#else /* FDC_DEBUG */
376#define TRACE0(arg)
377#define TRACE1(arg1, arg2)
378#endif /* FDC_DEBUG */
379
380#ifdef FDC_YE
381#if NCARD > 0
382#include <sys/select.h>
383#include <sys/module.h>
384#include <pccard/cardinfo.h>
385#include <pccard/driver.h>
386#include <pccard/slot.h>
387
388/*
389 * PC-Card (PCMCIA) specific code.
390 */
391static int yeinit(struct pccard_devinfo *); /* init device */
392static void yeunload(struct pccard_devinfo *); /* Disable driver */
393static int yeintr(struct pccard_devinfo *); /* Interrupt handler */
394
395PCCARD_MODULE(fdc, yeinit, yeunload, yeintr, 0, bio_imask);
396
397/*
398 * this is the secret PIO data port (offset from base)
399 */
400#define FDC_YE_DATAPORT 6
401
402/*
403 * Initialize the device - called from Slot manager.
404 */
405static int yeinit(struct pccard_devinfo *devi)
406{
407 fdc_p fdc = &fdc_data[devi->isahd.id_unit];
408
409 /* validate unit number. */
410 if (devi->isahd.id_unit >= NFDC)
411 return(ENODEV);
412 fdc->baseport = devi->isahd.id_iobase;
413 /*
414 * reset controller
415 */
416 outb(fdc->baseport+FDOUT, 0);
417 DELAY(100);
418 outb(fdc->baseport+FDOUT, FDO_FRST);
419
420 /*
421 * wire into system
422 */
423 if (yeattach(&devi->isahd) == 0)
424 return(ENXIO);
425
426 return(0);
427}
428
429/*
430 * yeunload - unload the driver and clear the table.
431 * XXX TODO:
432 * This is usually called when the card is ejected, but
433 * can be caused by a modunload of a controller driver.
434 * The idea is to reset the driver's view of the device
435 * and ensure that any driver entry points such as
436 * read and write do not hang.
437 */
438static void yeunload(struct pccard_devinfo *devi)
439{
440 if (fd_data[devi->isahd.id_unit].type == NO_TYPE)
441 return;
442
443 /*
444 * this prevents Fdopen() and fdstrategy() from attempting
445 * to access unloaded controller
446 */
447 fd_data[devi->isahd.id_unit].type = NO_TYPE;
448
449 printf("fdc%d: unload\n", devi->isahd.id_unit);
450}
451
452/*
453 * yeintr - Shared interrupt called from
454 * front end of PC-Card handler.
455 */
456static int yeintr(struct pccard_devinfo *devi)
457{
458 fdintr((fdcu_t)devi->isahd.id_unit);
459 return(1);
460}
461#endif /* NCARD > 0 */
462#endif /* FDC_YE */
463
464static d_open_t Fdopen; /* NOTE, not fdopen */
465static d_close_t fdclose;
466static d_ioctl_t fdioctl;
467static d_strategy_t fdstrategy;
468
469#define CDEV_MAJOR 9
470#define BDEV_MAJOR 2
471
472static struct cdevsw fd_cdevsw = {
473 /* open */ Fdopen,
474 /* close */ fdclose,
475 /* read */ physread,
476 /* write */ physwrite,
477 /* ioctl */ fdioctl,
478 /* stop */ nostop,
479 /* reset */ noreset,
480 /* devtotty */ nodevtotty,
481 /* poll */ nopoll,
482 /* mmap */ nommap,
483 /* strategy */ fdstrategy,
484 /* name */ "fd",
485 /* parms */ noparms,
486 /* maj */ CDEV_MAJOR,
487 /* dump */ nodump,
488 /* psize */ nopsize,
489 /* flags */ D_DISK,
490 /* maxio */ 0,
491 /* bmaj */ BDEV_MAJOR
492};
493
494static int
495fdc_err(struct fdc_data *fdc, const char *s)
496{
497 fdc->fdc_errs++;
498 if (s) {
499 if (fdc->fdc_errs < FDC_ERRMAX) {
500 device_print_prettyname(fdc->fdc_dev);
501 printf("%s", s);
502 } else if (fdc->fdc_errs == FDC_ERRMAX) {
503 device_print_prettyname(fdc->fdc_dev);
504 printf("too many errors, not logging any more\n");
505 }
506 }
507
508 return FD_FAILED;
509}
510
511/*
512 * fd_cmd: Send a command to the chip. Takes a varargs with this structure:
513 * Unit number,
514 * # of output bytes, output bytes as ints ...,
515 * # of input bytes, input bytes as ints ...
516 */
517static int
518fd_cmd(struct fdc_data *fdc, int n_out, ...)
519{
520 u_char cmd;
521 int n_in;
522 int n;
523 va_list ap;
524
525 va_start(ap, n_out);
526 cmd = (u_char)(va_arg(ap, int));
527 va_end(ap);
528 va_start(ap, n_out);
529 for (n = 0; n < n_out; n++)
530 {
531 if (out_fdc(fdc, va_arg(ap, int)) < 0)
532 {
533 char msg[50];
534 snprintf(msg, sizeof(msg),
535 "cmd %x failed at out byte %d of %d\n",
536 cmd, n + 1, n_out);
537 return fdc_err(fdc, msg);
538 }
539 }
540 n_in = va_arg(ap, int);
541 for (n = 0; n < n_in; n++)
542 {
543 int *ptr = va_arg(ap, int *);
544 if (fd_in(fdc, ptr) < 0)
545 {
546 char msg[50];
547 snprintf(msg, sizeof(msg),
548 "cmd %02x failed at in byte %d of %d\n",
549 cmd, n + 1, n_in);
550 return fdc_err(fdc, msg);
551 }
552 }
553
554 return 0;
555}
556
557static int
558enable_fifo(fdc_p fdc)
559{
560 int i, j;
561
562 if ((fdc->flags & FDC_HAS_FIFO) == 0) {
563
564 /*
565 * XXX:
566 * Cannot use fd_cmd the normal way here, since
567 * this might be an invalid command. Thus we send the
568 * first byte, and check for an early turn of data directon.
569 */
570
571 if (out_fdc(fdc, I8207X_CONFIGURE) < 0)
572 return fdc_err(fdc, "Enable FIFO failed\n");
573
574 /* If command is invalid, return */
575 j = 100000;
576 while ((i = inb(fdc->baseport + FDSTS) & (NE7_DIO | NE7_RQM))
577 != NE7_RQM && j-- > 0)
578 if (i == (NE7_DIO | NE7_RQM)) {
579 fdc_reset(fdc);
580 return FD_FAILED;
581 }
582 if (j<0 ||
583 fd_cmd(fdc, 3,
584 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) {
585 fdc_reset(fdc);
586 return fdc_err(fdc, "Enable FIFO failed\n");
587 }
588 fdc->flags |= FDC_HAS_FIFO;
589 return 0;
590 }
591 if (fd_cmd(fdc, 4,
592 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0)
593 return fdc_err(fdc, "Re-enable FIFO failed\n");
594 return 0;
595}
596
597static int
598fd_sense_drive_status(fdc_p fdc, int *st3p)
599{
600 int st3;
601
602 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3))
603 {
604 return fdc_err(fdc, "Sense Drive Status failed\n");
605 }
606 if (st3p)
607 *st3p = st3;
608
609 return 0;
610}
611
612static int
613fd_sense_int(fdc_p fdc, int *st0p, int *cylp)
614{
615 int cyl, st0, ret;
616
617#ifdef EPSON_NRDISK
618 if (fdc->fdu == nrdu) {
619 if (fdc->fd->track >= 0) nrdaddr = (fdc->fd->track + 1) * 8;
620 else nrdaddr = 0x0;
621 *st0p = nrd_head() ? NRD_ST0_HD : NRD_STATUS;
622 *cylp = nrd_trac();
623 }
624 else {
625#endif /* EPSON_NRDISK */
626 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0);
627 if (ret) {
628 (void)fdc_err(fdc,
629 "sense intr err reading stat reg 0\n");
630 return ret;
631 }
632
633 if (st0p)
634 *st0p = st0;
635
636 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) {
637 /*
638 * There doesn't seem to have been an interrupt.
639 */
640 return FD_NOT_VALID;
641 }
642
643 if (fd_in(fdc, &cyl) < 0) {
644 return fdc_err(fdc, "can't get cyl num\n");
645 }
646
647 if (cylp)
648 *cylp = cyl;
649
650#ifdef EPSON_NRDISK
651 }
652#endif /* EPSON_NRDISK */
653 return 0;
654}
655
656
657static int
658fd_read_status(fdc_p fdc, int fdsu)
659{
660 int i, ret;
661
662 for (i = 0; i < 7; i++) {
663 /*
664 * XXX types are poorly chosen. Only bytes can by read
665 * from the hardware, but fdc->status[] wants u_ints and
666 * fd_in() gives ints.
667 */
668 int status;
669
670#ifdef EPSON_NRDISK
671 if (fdc->fdu == nrdu) {
672 switch (i) {
673 case 0: fdc->status[i] = nrd_head()
674 ? NRD_ST0_HD : NRD_STATUS; break;
675 case 1: fdc->status[i] = NRD_STATUS; break;
676 case 2: fdc->status[i] = NRD_STATUS; break;
677 case 3: fdc->status[i] = nrd_trac(); break;
678 case 4: fdc->status[i] = nrd_head(); break;
679 case 5: fdc->status[i] = nrdsec; break;
680 case 6: fdc->status[i] = nrd_secsize(); break;
681 }
682 ret = 0;
683 }
684 else {
685#endif /* EPSON_NRDISK */
686 ret = fd_in(fdc, &status);
687 fdc->status[i] = status;
688 if (ret != 0)
689 break;
690#ifdef EPSON_NRDISK
691 }
692#endif /* EPSON_NRDISK */
693 }
694
695 if (ret == 0)
696 fdc->flags |= FDC_STAT_VALID;
697 else
698 fdc->flags &= ~FDC_STAT_VALID;
699
700 return ret;
701}
702
703/****************************************************************************/
704/* autoconfiguration stuff */
705/****************************************************************************/
706#ifdef PC98
707static int pc98_trans = 0; /* 0 : HD , 1 : DD , 2 : 1.44 */
708static int pc98_trans_prev = 0;
709
710static void set_density(fdc_p fdc)
711{
712 /* always motor on */
713 outb(IO_FDPORT, (pc98_trans != 1 ? FDP_FDDEXC : 0) | FDP_PORTEXC);
714 DELAY(100);
715 outb(fdc->baseport + FDOUT, FDO_RST | FDO_DMAE);
716 /* in the case of note W, always inhibit 100ms timer */
717}
718
719static int pc98_fd_check_ready(fdu_t fdu)
720{
721 fd_p fd = devclass_get_softc(fd_devclass, fdu);
722 struct fdc_data *fdc = fd->fdc;
723 int retry = 0;
724
725#ifdef EPSON_NRDISK
726 if (fdu == nrdu) {
727 if (nrd_check_ready()) return 0;
728 else return -1;
729 }
730#endif
731 while (retry++ < 30000) {
732 set_motor(fdc, fd->fdsu, TURNON);
733 out_fdc(fdc, NE7CMD_SENSED); /* Sense Drive Status */
734 DELAY(100);
735 out_fdc(fdc, fdu); /* Drive number */
736 DELAY(100);
737 if ((in_fdc(fdc) & NE7_ST3_RD)){
738 outb(fdc->baseport + FDOUT,
739 FDO_DMAE | FDO_MTON);
740 DELAY(10);
741 return 0;
742 }
743 }
744 return -1;
745}
746#endif
747
748static int
749fdc_probe(device_t dev)
750{
751 int error, i, ic_type;
752 struct fdc_data *fdc;
753 char myname[8]; /* better be long enough */
754
755 fdc = device_get_softc(dev);
756 bzero(fdc, sizeof *fdc);
757 fdc->fdc_dev = dev;
758 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0;
759 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0;
760
761 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT,
762 &fdc->rid_ioport, 0ul, ~0ul,
763 IO_FDCSIZE, RF_ACTIVE);
764 if (fdc->res_ioport == 0) {
765 device_print_prettyname(dev);
766 printf("cannot reserve I/O port range\n");
767 error = ENXIO;
768 goto out;
769 }
770 fdc->baseport = fdc->res_ioport->r_start;
771
772 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ,
773 &fdc->rid_irq, 0ul, ~0ul, 1,
774 RF_ACTIVE);
775 if (fdc->res_irq == 0) {
776 device_print_prettyname(dev);
777 printf("cannot reserve interrupt line\n");
778 error = ENXIO;
779 goto out;
780 }
781 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ,
782 &fdc->rid_drq, 0ul, ~0ul, 1,
783 RF_ACTIVE);
784 if (fdc->res_drq == 0) {
785 device_print_prettyname(dev);
786 printf("cannot reserve DMA request line\n");
787 error = ENXIO;
788 goto out;
789 }
790 fdc->dmachan = fdc->res_drq->r_start;
791 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq,
792 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr);
793
794#ifndef PC98
795 /* First - lets reset the floppy controller */
796 outb(fdc->baseport + FDOUT, 0);
797 DELAY(100);
798 outb(fdc->baseport + FDOUT, FDO_FRST);
799#endif
800
801 /* see if it can handle a command */
802#ifdef PC98
803 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(4, 240),
804 NE7_SPEC_2(2, 0), 0)) {
805 error = ENXIO;
806 goto out;
807 }
808#else
809 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240),
810 NE7_SPEC_2(2, 0), 0)) {
811 error = ENXIO;
812 goto out;
813 }
814#endif
815
816#ifndef PC98
817 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) {
818 ic_type = (u_char)ic_type;
819 switch (ic_type) {
820 case 0x80:
821 device_set_desc(dev, "NEC 765 or clone");
822 fdc->fdct = FDC_NE765;
823 break;
824 case 0x81:
825 device_set_desc(dev, "Intel 82077 or clone");
826 fdc->fdct = FDC_I82077;
827 break;
828 case 0x90:
829 device_set_desc(dev, "NEC 72065B or clone");
830 fdc->fdct = FDC_NE72065;
831 break;
832 default:
833 device_set_desc(dev, "generic floppy controller");
834 fdc->fdct = FDC_UNKNOWN;
835 break;
836 }
837 }
838#endif
839
840 snprintf(myname, sizeof(myname), "%s%d", device_get_name(dev),
841 device_get_unit(dev));
842 for (i = resource_query_string(-1, "at", myname); i != -1;
843 i = resource_query_string(i, "at", myname))
844 fdc_add_device(dev, resource_query_name(i),
845 resource_query_unit(i));
846#ifdef FDC_YE
847 /*
848 * don't succeed on probe; wait
849 * for PCCARD subsystem to do it
850 */
851 if (dev->id_flags & FDC_IS_PCMCIA)
852 return(0);
853#endif
854 return (0);
855
856out:
857 if (fdc->fdc_intr)
858 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq,
859 fdc->fdc_intr);
860 if (fdc->res_irq != 0) {
861 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq,
862 fdc->res_irq);
863 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq,
864 fdc->res_irq);
865 }
866 if (fdc->res_ioport != 0) {
867 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport,
868 fdc->res_ioport);
869 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport,
870 fdc->res_ioport);
871 }
872 if (fdc->res_drq != 0) {
873 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq,
874 fdc->res_drq);
875 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq,
876 fdc->res_drq);
877 }
878 return (error);
879}
880
881/*
882 * Aped dfr@freebsd.org's isa_add_device().
883 */
884static void
885fdc_add_device(device_t dev, const char *name, int unit)
886{
887 int disabled, *ivar;
888 device_t child;
889
890 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT);
891 if (ivar == 0)
892 return;
893 if (resource_int_value(name, unit, "drive", ivar) == 0)
894 *ivar = 0;
895 child = device_add_child(dev, name, unit, ivar);
896 if (child == 0)
897 return;
898 if (resource_int_value(name, unit, "disabled", &disabled) == 0)
899 device_disable(child);
900}
901
902static int
903fdc_attach(device_t dev)
904{
905 struct fdc_data *fdc = device_get_softc(dev);
906 fdcu_t fdcu = device_get_unit(dev);
907
908 fdc->fdcu = fdcu;
909 fdc->flags |= FDC_ATTACHED;
910
911 /* Acquire the DMA channel forever, The driver will do the rest */
912 /* XXX should integrate with rman */
913 isa_dma_acquire(fdc->dmachan);
914 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */);
915 fdc->state = DEVIDLE;
916
917#ifdef PC98
918 /* reset controller, turn motor off, clear fdout mirror reg */
919 fdc_reset(fdc);
920#else
921 /* reset controller, turn motor off, clear fdout mirror reg */
922 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0)));
923#endif
924 bufq_init(&fdc->head);
925
926#ifdef FIFO_BEFORE_MOTORON
927 /* Hmm, this doesn't work here - is set_motor() magic? -Peter */
928 if (fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN
929 && enable_fifo(fdc) == 0) {
930 device_print_prettyname(dev);
931 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold);
932 }
933#endif
934 /*
935 * Probe and attach any children as were configured above.
936 */
937 return (bus_generic_attach(dev));
938}
939
940static void
941fdc_print_child(device_t me, device_t child)
942{
943 printf(" at %s%d drive %d", device_get_name(me), device_get_unit(me),
944 *(int *)device_get_ivars(child));
945}
946
947static int
948fd_probe(device_t dev)
949{
950 int i;
951 u_int fdt, st0, st3;
952 struct fd_data *fd;
953 struct fdc_data *fdc;
954 fdsu_t fdsu;
955#ifndef FIFO_BEFORE_MOTORON
956 static int fd_fifo = 0;
957#endif
958
959 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */
960 fd = device_get_softc(dev);
961 fdc = device_get_softc(device_get_parent(dev));
962
963 bzero(fd, sizeof *fd);
964 fd->dev = dev;
965 fd->fdc = fdc;
966 fd->fdsu = fdsu;
967 fd->fdu = device_get_unit(dev);
968
969#ifdef PC98
970 /* look up what bios thinks we have */
971 switch (fd->fdu) {
972 case 0: case 1: case 2: case 3:
973 if ((PC98_SYSTEM_PARAMETER(0x5ae) >> fd->fdu) & 0x01)
974 fdt = FDT_144M;
975#ifdef EPSON_NRDISK
976 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) {
977 fdt = FDT_12M;
978 switch (epson_machine_id) {
979 case 0x20: case 0x27:
980 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) & 0x01) {
981 if (nrd_check_ready()) {
982 nrd_LED_on();
983 nrdu = fd->fdu;
984 } else {
985 fdt = FDT_NONE;
986 }
987 }
988 }
989 }
990#else /* !EPSON_NRDISK */
991 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) {
992 fdt = FDT_12M;
993 switch (epson_machine_id) {
994 case 0x20: case 0x27:
995 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) & 0x01)
996 fdt = FDT_NONE;
997 }
998 }
999#endif /* EPSON_NRDISK */
1000 else
1001 fdt = FDT_NONE;
1002 break;
1003 default:
1004 fdt = FDT_NONE;
1005 break;
1006 }
1007#else
1008 /* look up what bios thinks we have */
1009 switch (fd->fdu) {
1010 case 0:
1011 if (isa_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0)
1012 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED;
1013 else
1014 fdt = (rtcin(RTC_FDISKETTE) & 0xf0);
1015 break;
1016 case 1:
1017 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0);
1018 break;
1019 default:
1020 fdt = RTCFDT_NONE;
1021 break;
1022 }
1023#endif
1024
1025 /* is there a unit? */
1026#ifdef PC98
1027 if (fdt == FDT_NONE)
1028 return (ENXIO);
1029#else
1030 if (fdt == RTCFDT_NONE)
1031 return (ENXIO);
1032#endif
1033
1034#ifndef PC98
1035 /* select it */
1036 set_motor(fdc, fdsu, TURNON);
1037 DELAY(1000000); /* 1 sec */
1038
1039#ifndef FIFO_BEFORE_MOTORON
1040 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN
1041 && enable_fifo(fdc) == 0) {
1042 device_print_prettyname(device_get_parent(dev));
1043 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold);
1044 }
1045 fd_fifo = 1;
1046#endif
1047
1048 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0)
1049 && (st3 & NE7_ST3_T0)) {
1050 /* if at track 0, first seek inwards */
1051 /* seek some steps: */
1052 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0);
1053 DELAY(300000); /* ...wait a moment... */
1054 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */
1055 }
1056
1057 /* If we're at track 0 first seek inwards. */
1058 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) {
1059 /* Seek some steps... */
1060 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) {
1061 /* ...wait a moment... */
1062 DELAY(300000);
1063 /* make ctrlr happy: */
1064 fd_sense_int(fdc, 0, 0);
1065 }
1066 }
1067
1068 for (i = 0; i < 2; i++) {
1069 /*
1070 * we must recalibrate twice, just in case the
1071 * heads have been beyond cylinder 76, since most
1072 * FDCs still barf when attempting to recalibrate
1073 * more than 77 steps
1074 */
1075 /* go back to 0: */
1076 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) {
1077 /* a second being enough for full stroke seek*/
1078 DELAY(i == 0 ? 1000000 : 300000);
1079
1080 /* anything responding? */
1081 if (fd_sense_int(fdc, &st0, 0) == 0 &&
1082 (st0 & NE7_ST0_EC) == 0)
1083 break; /* already probed succesfully */
1084 }
1085 }
1086
1087 set_motor(fdc, fdsu, TURNOFF);
1088
1089 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */
1090 return (ENXIO);
1091#endif /* PC98 */
1092
1093 fd->track = FD_NO_TRACK;
1094 fd->fdc = fdc;
1095 fd->fdsu = fdsu;
1096 fd->options = 0;
1097 callout_handle_init(&fd->toffhandle);
1098 callout_handle_init(&fd->tohandle);
1099
1100#ifdef PC98
1101 switch (fdt) {
1102 case FDT_12M:
1103#ifdef EPSON_NRDISK
1104 if (fdu == nrdu) {
1105 device_set_desc(dev, "EPSON RAM DRIVE");
1106 nrd_LED_off();
1107 } else
1108 device_set_desc(dev, "1M/640M FDD");
1109#else
1110 device_set_desc(dev, "1M/640M FDD");
1111#endif
1112 fd->type = FD_1200;
1113 fd->pc98_trans = 0;
1114 break;
1115 case FDT_144M:
1116 device_set_desc(dev, "1.44M FDD");
1117 fd->type = FD_1200;
1118 fd->pc98_trans = 0;
1119 outb(0x4be, (fd->fdu << 5) | 0x10);
1120 break;
1121 default:
1122 return (ENXIO);
1123 }
1124#else
1125 switch (fdt) {
1126 case RTCFDT_12M:
1127 device_set_desc(dev, "1200-KB 5.25\" drive");
1128 fd->type = FD_1200;
1129 break;
1130 case RTCFDT_144M | RTCFDT_144M_PRETENDED:
1131 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive");
1132 fdt = RTCFDT_144M;
1133 fd->type = FD_1440;
1134 case RTCFDT_144M:
1135 device_set_desc(dev, "1440-KB 3.5\" drive");
1136 fd->type = FD_1440;
1137 break;
1138 case RTCFDT_288M:
1139 case RTCFDT_288M_1:
1140 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)");
1141 fd->type = FD_1440;
1142 break;
1143 case RTCFDT_360K:
1144 device_set_desc(dev, "360-KB 5.25\" drive");
1145 fd->type = FD_360;
1146 break;
1147 case RTCFDT_720K:
1148 printf("720-KB 3.5\" drive");
1149 fd->type = FD_720;
1150 break;
1151 default:
1152 return (ENXIO);
1153 }
1154#endif
1155 return (0);
1156}
1157
1158static int
1159fd_attach(device_t dev)
1160{
1161 struct fd_data *fd;
1162#ifdef DEVFS
1163 int i;
1164 int mynor;
1165 int typemynor;
1166 int typesize;
1167#endif
1168
1169 fd = device_get_softc(dev);
1170
1171#ifdef DEVFS /* XXX bitrot */
1172 mynor = fd->fdu << 6;
1173 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK,
1174 UID_ROOT, GID_OPERATOR, 0640,
1175 "fd%d", fd->fdu);
1176 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR,
1177 UID_ROOT, GID_OPERATOR, 0640,
1178 "rfd%d", fd->fdu);
1179 for (i = 1; i < 1 + NUMDENS; i++) {
1180 /*
1181 * XXX this and the lookup in Fdopen() should be
1182 * data driven.
1183 */
1184#ifdef PC98
1185 switch (fd->type) {
1186 case FDT_12M:
1187 if (i != FD_1200 && i != FD_1232
1188 && i != FD_720 && i != FD_640)
1189 continue;
1190 break;
1191 case FDT_144M:
1192 if (i != FD_1200 && i != FD_1232
1193 && i != FD_720 && i != FD_640
1194 && i != FD_1440)
1195 continue;
1196 break;
1197 }
1198#else
1199 switch (fd->type) {
1200 case FD_360:
1201 if (i != FD_360)
1202 continue;
1203 break;
1204 case FD_720:
1205 if (i != FD_720 && i != FD_800 && i != FD_820)
1206 continue;
1207 break;
1208 case FD_1200:
1209 if (i != FD_360 && i != FD_720 && i != FD_800
1210 && i != FD_820 && i != FD_1200
1211 && i != FD_1440 && i != FD_1480)
1212 continue;
1213 break;
1214 case FD_1440:
1215 if (i != FD_720 && i != FD_800 && i != FD_820
1216 && i != FD_1200 && i != FD_1440
1217 && i != FD_1480 && i != FD_1720)
1218 continue;
1219 break;
1220 }
1221#endif
1222#ifdef PC98
1223 if (i == FD_1232)
1224 typesize = fd_types[i - 1].size;
1225 else
1226 typesize = fd_types[i - 1].size / 2;
1227#else
1228 typesize = fd_types[i - 1].size / 2;
1229 /*
1230 * XXX all these conversions give bloated code and
1231 * confusing names.
1232 */
1233 if (typesize == 1476)
1234 typesize = 1480;
1235 if (typesize == 1722)
1236 typesize = 1720;
1237#endif
1238 typemynor = mynor | i;
1239 fd->bdevs[i] =
1240 devfs_add_devswf(&fd_cdevsw, typemynor, DV_BLK,
1241 UID_ROOT, GID_OPERATOR, 0640,
1242 "fd%d.%d", fd->fdu, typesize);
1243 fd->cdevs[i] =
1244 devfs_add_devswf(&fd_cdevsw, typemynor, DV_CHR,
1245 UID_ROOT, GID_OPERATOR, 0640,
1246 "rfd%d.%d", fd->fdu, typesize);
1247 }
1248
1249 for (i = 0; i < MAXPARTITIONS; i++) {
1250 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0],
1251 "fd%d%c", fd->fdu, 'a' + i);
1252 fd->cdevs[1 + NUMDENS + i] =
1253 devfs_makelink(fd->cdevs[0],
1254 "rfd%d%c", fd->fdu, 'a' + i);
1255 }
1256#endif /* DEVFS */
1257 /*
1258 * Export the drive to the devstat interface.
1259 */
1260 devstat_add_entry(&fd->device_stats, device_get_name(dev),
1261 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS,
1262 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER,
1263 DEVSTAT_PRIORITY_FD);
1264 return (0);
1265}
1266
1267#ifdef FDC_YE
1268/*
1269 * this is a subset of fdattach() optimized for the Y-E Data
1270 * PCMCIA floppy drive.
1271 */
1272static int yeattach(struct isa_device *dev)
1273{
1274 fdcu_t fdcu = dev->id_unit;
1275 fdc_p fdc = fdc_data + fdcu;
1276 fdsu_t fdsu = 0; /* assume 1 drive per YE controller */
1277 fdu_t fdu;
1278 fd_p fd;
1279 int st0, st3, i;
1280#ifdef DEVFS
1281 int mynor;
1282 int typemynor;
1283 int typesize;
1284#endif
1285 fdc->fdcu = fdcu;
1286 /*
1287 * the FDC_PCMCIA flag is used to to indicate special PIO is used
1288 * instead of DMA
1289 */
1290 fdc->flags = FDC_ATTACHED|FDC_PCMCIA;
1291 fdc->state = DEVIDLE;
1292 /* reset controller, turn motor off, clear fdout mirror reg */
1293 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0)));
1294 bufq_init(&fdc->head);
1295 /*
1296 * assume 2 drives/ "normal" controller
1297 */
1298 fdu = fdcu * 2;
1299 if (fdu >= NFD) {
1300 printf("fdu %d >= NFD\n",fdu);
1301 return(0);
1302 };
1303 fd = &fd_data[fdu];
1304
1305 set_motor(fdcu, fdsu, TURNON);
1306 DELAY(1000000); /* 1 sec */
1307 fdc->fdct = FDC_NE765;
1308
1309 if ((fd_cmd(fdcu, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) &&
1310 (st3 & NE7_ST3_T0)) {
1311 /* if at track 0, first seek inwards */
1312 /* seek some steps: */
1313 (void)fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0);
1314 DELAY(300000); /* ...wait a moment... */
1315 (void)fd_sense_int(fdc, 0, 0); /* make ctrlr happy */
1316 }
1317
1318 /* If we're at track 0 first seek inwards. */
1319 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) {
1320 /* Seek some steps... */
1321 if (fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) {
1322 /* ...wait a moment... */
1323 DELAY(300000);
1324 /* make ctrlr happy: */
1325 (void)fd_sense_int(fdc, 0, 0);
1326 }
1327 }
1328
1329 for(i = 0; i < 2; i++) {
1330 /*
1331 * we must recalibrate twice, just in case the
1332 * heads have been beyond cylinder 76, since most
1333 * FDCs still barf when attempting to recalibrate
1334 * more than 77 steps
1335 */
1336 /* go back to 0: */
1337 if (fd_cmd(fdcu, 2, NE7CMD_RECAL, fdsu, 0) == 0) {
1338 /* a second being enough for full stroke seek*/
1339 DELAY(i == 0? 1000000: 300000);
1340
1341 /* anything responding? */
1342 if (fd_sense_int(fdc, &st0, 0) == 0 &&
1343 (st0 & NE7_ST0_EC) == 0)
1344 break; /* already probed succesfully */
1345 }
1346 }
1347
1348 set_motor(fdcu, fdsu, TURNOFF);
1349
1350 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */
1351 return(0);
1352
1353 fd->track = FD_NO_TRACK;
1354 fd->fdc = fdc;
1355 fd->fdsu = fdsu;
1356 fd->options = 0;
1357 printf("fdc%d: 1.44MB 3.5in PCMCIA\n", fdcu);
1358 fd->type = FD_1440;
1359
1360#ifdef DEVFS
1361 mynor = fdcu << 6;
1362 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK,
1363 UID_ROOT, GID_OPERATOR, 0640,
1364 "fd%d", fdu);
1365 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR,
1366 UID_ROOT, GID_OPERATOR, 0640,
1367 "rfd%d", fdu);
1368 /*
1369 * XXX this and the lookup in Fdopen() should be
1370 * data driven.
1371 */
1372 typemynor = mynor | FD_1440;
1373 typesize = fd_types[FD_1440 - 1].size / 2;
1374 /*
1375 * XXX all these conversions give bloated code and
1376 * confusing names.
1377 */
1378 if (typesize == 1476)
1379 typesize = 1480;
1380 if (typesize == 1722)
1381 typesize = 1720;
1382 fd->bdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor,
1383 DV_BLK, UID_ROOT, GID_OPERATOR,
1384 0640, "fd%d.%d", fdu, typesize);
1385 fd->cdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor,
1386 DV_CHR, UID_ROOT, GID_OPERATOR,
1387 0640,"rfd%d.%d", fdu, typesize);
1388 for (i = 0; i < MAXPARTITIONS; i++) {
1389 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0],
1390 "fd%d%c", fdu, 'a' + i);
1391 fd->cdevs[1 + NUMDENS + i] = devfs_makelink(fd->cdevs[0],
1392 "rfd%d%c", fdu, 'a' + i);
1393 }
1394#endif /* DEVFS */
1395 return (1);
1396}
1397#endif
1398
1399/****************************************************************************/
1400/* motor control stuff */
1401/* remember to not deselect the drive we're working on */
1402/****************************************************************************/
1403static void
1404set_motor(struct fdc_data *fdc, int fdsu, int turnon)
1405{
1406 int fdout = fdc->fdout;
1407 int needspecify = 0;
1408
1409#ifdef PC98
1410 outb(IO_FDPORT, (pc98_trans != 1 ? FDP_FDDEXC : 0)|FDP_PORTEXC);
1411 DELAY(10);
1412 fdout = FDO_DMAE|FDO_MTON;
1413#else
1414 if(turnon) {
1415 fdout &= ~FDO_FDSEL;
1416 fdout |= (FDO_MOEN0 << fdsu) + fdsu;
1417 } else
1418 fdout &= ~(FDO_MOEN0 << fdsu);
1419
1420 if(!turnon
1421 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0)
1422 /* gonna turn off the last drive, put FDC to bed */
1423 fdout &= ~ (FDO_FRST|FDO_FDMAEN);
1424 else {
1425 /* make sure controller is selected and specified */
1426 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0)
1427 needspecify = 1;
1428 fdout |= (FDO_FRST|FDO_FDMAEN);
1429 }
1430#endif
1431
1432 outb(fdc->baseport+FDOUT, fdout);
1433 fdc->fdout = fdout;
1434 TRACE1("[0x%x->FDOUT]", fdout);
1435
1436 if (needspecify) {
1437 /*
1438 * XXX
1439 * special case: since we have just woken up the FDC
1440 * from its sleep, we silently assume the command will
1441 * be accepted, and do not test for a timeout
1442 */
1443#ifdef PC98
1444 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1445 NE7_SPEC_1(4, 240), NE7_SPEC_2(2, 0),
1446 0);
1447#else
1448 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1449 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1450 0);
1451#endif
1452 if (fdc->flags & FDC_HAS_FIFO)
1453 (void) enable_fifo(fdc);
1454 }
1455}
1456
1457static void
1458fd_turnoff(void *xfd)
1459{
1460 int s;
1461 fd_p fd = xfd;
1462
1463 TRACE1("[fd%d: turnoff]", fd->fdu);
1464
1465 /*
1466 * Don't turn off the motor yet if the drive is active.
1467 * XXX shouldn't even schedule turnoff until drive is inactive
1468 * and nothing is queued on it.
1469 */
1470 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) {
1471 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz);
1472 return;
1473 }
1474
1475 s = splbio();
1476 fd->flags &= ~FD_MOTOR;
1477 set_motor(fd->fdc, fd->fdsu, TURNOFF);
1478 splx(s);
1479}
1480
1481static void
1482fd_motor_on(void *xfd)
1483{
1484 int s;
1485 fd_p fd = xfd;
1486
1487 s = splbio();
1488 fd->flags &= ~FD_MOTOR_WAIT;
1489 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT))
1490 {
1491 fdc_intr(fd->fdc);
1492 }
1493 splx(s);
1494}
1495
1496static void
1497fd_turnon(fd_p fd)
1498{
1499 if(!(fd->flags & FD_MOTOR))
1500 {
1501 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT);
1502 set_motor(fd->fdc, fd->fdsu, TURNON);
1503 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */
1504 }
1505}
1506
1507static void
1508fdc_reset(fdc_p fdc)
1509{
1510 /* Try a reset, keep motor on */
1511#ifdef PC98
1512 set_density(fdc);
1513 if (pc98_machine_type & M_EPSON_PC98)
1514 outb(fdc->baseport + FDOUT, 0xe8);
1515 else
1516 outb(fdc->baseport + FDOUT, 0xd8);
1517 DELAY(200);
1518 outb(fdc->baseport + FDOUT, 0x18);
1519 DELAY(10);
1520#else
1521 outb(fdc->baseport + FDOUT, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
1522 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
1523 DELAY(100);
1524 /* enable FDC, but defer interrupts a moment */
1525 outb(fdc->baseport + FDOUT, fdc->fdout & ~FDO_FDMAEN);
1526 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN);
1527 DELAY(100);
1528 outb(fdc->baseport + FDOUT, fdc->fdout);
1529 TRACE1("[0x%x->FDOUT]", fdc->fdout);
1530#endif
1531
1532 /* XXX after a reset, silently believe the FDC will accept commands */
1533#ifdef PC98
1534 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1535 NE7_SPEC_1(4, 240), NE7_SPEC_2(2, 0),
1536 0);
1537#else
1538 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY,
1539 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1540 0);
1541#endif
1542 if (fdc->flags & FDC_HAS_FIFO)
1543 (void) enable_fifo(fdc);
1544}
1545
1546/****************************************************************************/
1547/* fdc in/out */
1548/****************************************************************************/
1549int
1550in_fdc(struct fdc_data *fdc)
1551{
1552 int baseport = fdc->baseport;
1553 int i, j = 100000;
1554 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM))
1555 != (NE7_DIO|NE7_RQM) && j-- > 0)
1556 if (i == NE7_RQM)
1557 return fdc_err(fdc, "ready for output in input\n");
1558 if (j <= 0)
1559 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
1560#ifdef FDC_DEBUG
1561 i = inb(baseport+FDDATA);
1562 TRACE1("[FDDATA->0x%x]", (unsigned char)i);
1563 return(i);
1564#else /* !FDC_DEBUG */
1565 return inb(baseport+FDDATA);
1566#endif /* FDC_DEBUG */
1567}
1568
1569/*
1570 * fd_in: Like in_fdc, but allows you to see if it worked.
1571 */
1572static int
1573fd_in(struct fdc_data *fdc, int *ptr)
1574{
1575 int baseport = fdc->baseport;
1576 int i, j = 100000;
1577 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM))
1578 != (NE7_DIO|NE7_RQM) && j-- > 0)
1579 if (i == NE7_RQM)
1580 return fdc_err(fdc, "ready for output in input\n");
1581 if (j <= 0)
1582 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0);
1583#ifdef FDC_DEBUG
1584 i = inb(baseport+FDDATA);
1585 TRACE1("[FDDATA->0x%x]", (unsigned char)i);
1586 *ptr = i;
1587 return 0;
1588#else /* !FDC_DEBUG */
1589 i = inb(baseport+FDDATA);
1590 if (ptr)
1591 *ptr = i;
1592 return 0;
1593#endif /* FDC_DEBUG */
1594}
1595
1596int
1597out_fdc(struct fdc_data *fdc, int x)
1598{
1599 int baseport = fdc->baseport;
1600 int i;
1601
1602 /* Check that the direction bit is set */
1603 i = 100000;
1604 while ((inb(baseport+FDSTS) & NE7_DIO) && i-- > 0);
1605 if (i <= 0) return fdc_err(fdc, "direction bit not set\n");
1606
1607 /* Check that the floppy controller is ready for a command */
1608 i = 100000;
1609 while ((inb(baseport+FDSTS) & NE7_RQM) == 0 && i-- > 0);
1610 if (i <= 0)
1611 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0);
1612
1613 /* Send the command and return */
1614 outb(baseport+FDDATA, x);
1615 TRACE1("[0x%x->FDDATA]", x);
1616 return (0);
1617}
1618
1619/****************************************************************************/
1620/* fdopen/fdclose */
1621/****************************************************************************/
1622int
1623Fdopen(dev_t dev, int flags, int mode, struct proc *p)
1624{
1625 fdu_t fdu = FDUNIT(minor(dev));
1626 int type = FDTYPE(minor(dev));
1627 fd_p fd;
1628 fdc_p fdc;
1629
1630 /* check bounds */
1631 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0)
1632 return (ENXIO);
1633 fdc = fd->fdc;
1634 if ((fdc == NULL) || (fd->type == NO_TYPE))
1635 return (ENXIO);
1636 if (type > NUMDENS)
1637 return (ENXIO);
1638#ifdef PC98
1639 if (pc98_fd_check_ready(fdu) == -1)
1640 return(EIO);
1641#endif
1642 if (type == 0)
1643 type = fd->type;
1644#ifndef PC98
1645 else {
1646 /*
1647 * For each type of basic drive, make sure we are trying
1648 * to open a type it can do,
1649 */
1650 if (type != fd->type) {
1651 switch (fd->type) {
1652 case FD_360:
1653 return (ENXIO);
1654 case FD_720:
1655 if ( type != FD_820
1656 && type != FD_800
1657 )
1658 return (ENXIO);
1659 break;
1660 case FD_1200:
1661 switch (type) {
1662 case FD_1480:
1663 type = FD_1480in5_25;
1664 break;
1665 case FD_1440:
1666 type = FD_1440in5_25;
1667 break;
1668 case FD_820:
1669 type = FD_820in5_25;
1670 break;
1671 case FD_800:
1672 type = FD_800in5_25;
1673 break;
1674 case FD_720:
1675 type = FD_720in5_25;
1676 break;
1677 case FD_360:
1678 type = FD_360in5_25;
1679 break;
1680 default:
1681 return(ENXIO);
1682 }
1683 break;
1684 case FD_1440:
1685 if ( type != FD_1720
1686 && type != FD_1480
1687 && type != FD_1200
1688 && type != FD_820
1689 && type != FD_800
1690 && type != FD_720
1691 )
1692 return(ENXIO);
1693 break;
1694 }
1695 }
1696 }
1697#endif
1698 fd->ft = fd_types + type - 1;
1699 fd->flags |= FD_OPEN;
1700 device_busy(fd->dev);
1701 device_busy(fd->fdc->fdc_dev);
1702 return 0;
1703}
1704
1705int
1706fdclose(dev_t dev, int flags, int mode, struct proc *p)
1707{
1708 fdu_t fdu = FDUNIT(minor(dev));
1709 struct fd_data *fd;
1710
1711 fd = devclass_get_softc(fd_devclass, fdu);
1712 fd->flags &= ~FD_OPEN;
1713 fd->options &= ~FDOPT_NORETRY;
1714
1715 return (0);
1716}
1717
1718/****************************************************************************/
1719/* fdstrategy */
1720/****************************************************************************/
1721void
1722fdstrategy(struct buf *bp)
1723{
1724 unsigned nblocks, blknum, cando;
1725 int s;
1726 fdu_t fdu;
1727 fdc_p fdc;
1728 fd_p fd;
1729 size_t fdblk;
1730
1731 fdu = FDUNIT(minor(bp->b_dev));
1732 fd = devclass_get_softc(fd_devclass, fdu);
1733 if (fd == 0)
1734 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)",
1735 (u_long)major(bp->b_dev), (u_long)minor(bp->b_dev));
1736 fdc = fd->fdc;
1737#ifdef FDC_YE
1738 if (fd->type == NO_TYPE) {
1739 bp->b_error = ENXIO;
1740 bp->b_flags |= B_ERROR;
1741 /*
1742 * I _refuse_ to use a goto
1743 */
1744 biodone(bp);
1745 return;
1746 };
1747#endif
1748
1749 fdblk = 128 << (fd->ft->secsize);
1750 if (!(bp->b_flags & B_FORMAT)) {
1751 if (bp->b_blkno < 0) {
1752 printf(
1753 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n",
1754 fdu, (u_long)bp->b_blkno, bp->b_bcount);
1755 bp->b_error = EINVAL;
1756 bp->b_flags |= B_ERROR;
1757 goto bad;
1758 }
1759 if ((bp->b_bcount % fdblk) != 0) {
1760 bp->b_error = EINVAL;
1761 bp->b_flags |= B_ERROR;
1762 goto bad;
1763 }
1764 }
1765
1766 /*
1767 * Set up block calculations.
1768 */
1769 if (bp->b_blkno > 20000000) {
1770 /*
1771 * Reject unreasonably high block number, prevent the
1772 * multiplication below from overflowing.
1773 */
1774 bp->b_error = EINVAL;
1775 bp->b_flags |= B_ERROR;
1776 goto bad;
1777 }
1778 blknum = (unsigned) bp->b_blkno * DEV_BSIZE/fdblk;
1779 nblocks = fd->ft->size;
1780 bp->b_resid = 0;
1781 if (blknum + (bp->b_bcount / fdblk) > nblocks) {
1782 if (blknum <= nblocks) {
1783 cando = (nblocks - blknum) * fdblk;
1784 bp->b_resid = bp->b_bcount - cando;
1785 if (cando == 0)
1786 goto bad; /* not actually bad but EOF */
1787 } else {
1788 bp->b_error = EINVAL;
1789 bp->b_flags |= B_ERROR;
1790 goto bad;
1791 }
1792 }
1793 bp->b_pblkno = bp->b_blkno;
1794 s = splbio();
1795 bufqdisksort(&fdc->head, bp);
1796 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */
1797
1798 /* Tell devstat we are starting on the transaction */
1799 devstat_start_transaction(&fd->device_stats);
1800
1801 fdstart(fdc);
1802 splx(s);
1803 return;
1804
1805bad:
1806 biodone(bp);
1807}
1808
1809/***************************************************************\
1810* fdstart *
1811* We have just queued something.. if the controller is not busy *
1812* then simulate the case where it has just finished a command *
1813* So that it (the interrupt routine) looks on the queue for more*
1814* work to do and picks up what we just added. *
1815* If the controller is already busy, we need do nothing, as it *
1816* will pick up our work when the present work completes *
1817\***************************************************************/
1818static void
1819fdstart(struct fdc_data *fdc)
1820{
1821 int s;
1822
1823 s = splbio();
1824 if(fdc->state == DEVIDLE)
1825 {
1826 fdc_intr(fdc);
1827 }
1828 splx(s);
1829}
1830
1831static void
1832fd_iotimeout(void *xfdc)
1833{
1834 fdc_p fdc;
1835 int s;
1836
1837 fdc = xfdc;
1838 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu);
1839
1840 /*
1841 * Due to IBM's brain-dead design, the FDC has a faked ready
1842 * signal, hardwired to ready == true. Thus, any command
1843 * issued if there's no diskette in the drive will _never_
1844 * complete, and must be aborted by resetting the FDC.
1845 * Many thanks, Big Blue!
1846 * The FDC must not be reset directly, since that would
1847 * interfere with the state machine. Instead, pretend that
1848 * the command completed but was invalid. The state machine
1849 * will reset the FDC and retry once.
1850 */
1851 s = splbio();
1852 fdc->status[0] = NE7_ST0_IC_IV;
1853 fdc->flags &= ~FDC_STAT_VALID;
1854 fdc->state = IOTIMEDOUT;
1855 fdc_intr(fdc);
1856 splx(s);
1857}
1858
1859/* just ensure it has the right spl */
1860static void
1861fd_pseudointr(void *xfdc)
1862{
1863 int s;
1864
1865 s = splbio();
1866 fdc_intr(xfdc);
1867 splx(s);
1868}
1869
1870/***********************************************************************\
1871* fdintr *
1872* keep calling the state machine until it returns a 0 *
1873* ALWAYS called at SPLBIO *
1874\***********************************************************************/
1875static void
1876fdc_intr(void *xfdc)
1877{
1878 fdc_p fdc = xfdc;
1879 while(fdstate(fdc))
1880 ;
1881}
1882
1883#ifdef FDC_YE
1884/*
1885 * magic pseudo-DMA initialization for YE FDC. Sets count and
1886 * direction
1887 */
1888#define SET_BCDR(wr,cnt,port) outb(port,(((cnt)-1) & 0xff)); \
1889 outb(port+1,((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f)))
1890
1891/*
1892 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy
1893 */
1894static int fdcpio(fdcu_t fdcu, long flags, caddr_t addr, u_int count)
1895{
1896 u_char *cptr = (u_char *)addr;
1897 fdc_p fdc = &fdc_data[fdcu];
1898 int io = fdc->baseport;
1899
1900 if (flags & B_READ) {
1901 if (fdc->state != PIOREAD) {
1902 fdc->state = PIOREAD;
1903 return(0);
1904 };
1905 SET_BCDR(0,count,io);
1906 insb(io+FDC_YE_DATAPORT,cptr,count);
1907 } else {
1908 outsb(io+FDC_YE_DATAPORT,cptr,count);
1909 SET_BCDR(0,count,io);
1910 };
1911 return(1);
1912}
1913#endif /* FDC_YE */
1914
1915/***********************************************************************\
1916* The controller state machine. *
1917* if it returns a non zero value, it should be called again immediatly *
1918\***********************************************************************/
1919static int
1920fdstate(fdc_p fdc)
1921{
1922 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3;
1923 unsigned blknum = 0, b_cylinder = 0;
1924 fdu_t fdu = fdc->fdu;
1925 fd_p fd;
1926 register struct buf *bp;
1927 struct fd_formb *finfo = NULL;
1928 size_t fdblk;
1929
1930 bp = fdc->bp;
1931 if (bp == NULL) {
1932 bp = bufq_first(&fdc->head);
1933 if (bp != NULL) {
1934 bufq_remove(&fdc->head, bp);
1935 fdc->bp = bp;
1936 }
1937 }
1938 if (bp == NULL) {
1939 /***********************************************\
1940 * nothing left for this controller to do *
1941 * Force into the IDLE state, *
1942 \***********************************************/
1943 fdc->state = DEVIDLE;
1944 if (fdc->fd) {
1945 device_print_prettyname(fdc->fdc_dev);
1946 printf("unexpected valid fd pointer\n");
1947 fdc->fd = (fd_p) 0;
1948 fdc->fdu = -1;
1949 }
1950 TRACE1("[fdc%d IDLE]", fdc->fdcu);
1951 return (0);
1952 }
1953 fdu = FDUNIT(minor(bp->b_dev));
1954 fd = devclass_get_softc(fd_devclass, fdu);
1955 fdblk = 128 << fd->ft->secsize;
1956 if (fdc->fd && (fd != fdc->fd)) {
1957 device_print_prettyname(fd->dev);
1958 printf("confused fd pointers\n");
1959 }
1960 read = bp->b_flags & B_READ;
1961 format = bp->b_flags & B_FORMAT;
1962 if (format) {
1963 finfo = (struct fd_formb *)bp->b_data;
1964 fd->skip = (char *)&(finfo->fd_formb_cylno(0))
1965 - (char *)finfo;
1966 }
1967 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) {
1968 blknum = (unsigned) bp->b_pblkno * DEV_BSIZE/fdblk +
1969 fd->skip/fdblk;
1970 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads);
1971 }
1972 TRACE1("fd%d", fdu);
1973 TRACE1("[%s]", fdstates[fdc->state]);
1974 TRACE1("(0x%x)", fd->flags);
1975 untimeout(fd_turnoff, fd, fd->toffhandle);
1976 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz);
1977 switch (fdc->state)
1978 {
1979 case DEVIDLE:
1980 case FINDWORK: /* we have found new work */
1981 fdc->retry = 0;
1982 fd->skip = 0;
1983 fdc->fd = fd;
1984 fdc->fdu = fdu;
1985#ifdef PC98
1986 pc98_trans = fd->ft->trans;
1987 if (pc98_trans_prev != pc98_trans) {
1988 int i;
1989 set_density(fdc);
1990 for (i = 0; i < 10; i++) {
1991 outb(0x5f, 0);
1992 outb(0x5f, 0);
1993 }
1994 pc98_trans_prev = pc98_trans;
1995 }
1996 if (pc98_trans != fd->pc98_trans) {
1997 if (pc98_trans != 1 &&
1998 (PC98_SYSTEM_PARAMETER(0x5ae) >> fdu) & 0x01) {
1999 outb(0x4be, (fdu << 5) | 0x10 | (pc98_trans >> 1));
2000 outb(0x5f, 0);
2001 outb(0x5f, 0);
2002 }
2003 fd->pc98_trans = pc98_trans;
2004 }
2005#else
2006 outb(fdc->baseport+FDCTL, fd->ft->trans);
2007#endif
2008 TRACE1("[0x%x->FDCTL]", fd->ft->trans);
2009 /*******************************************************\
2010 * If the next drive has a motor startup pending, then *
2011 * it will start up in its own good time *
2012 \*******************************************************/
2013 if(fd->flags & FD_MOTOR_WAIT) {
2014 fdc->state = MOTORWAIT;
2015 return (0); /* come back later */
2016 }
2017 /*******************************************************\
2018 * Maybe if it's not starting, it SHOULD be starting *
2019 \*******************************************************/
2020#ifdef EPSON_NRDISK
2021 if (fdu != nrdu) {
2022 if (!(fd->flags & FD_MOTOR))
2023 {
2024 fdc->state = MOTORWAIT;
2025 fd_turnon(fdu);
2026 return(0);
2027 }
2028 else /* at least make sure we are selected */
2029 {
2030 set_motor(fdcu, fd->fdsu, TURNON);
2031 }
2032 }
2033#else /* !EPSON_NRDISK */
2034 if (!(fd->flags & FD_MOTOR))
2035 {
2036 fdc->state = MOTORWAIT;
2037 fd_turnon(fd);
2038 return (0);
2039 }
2040 else /* at least make sure we are selected */
2041 {
2042 set_motor(fdc, fd->fdsu, TURNON);
2043 }
2044#endif
2045 if (fdc->flags & FDC_NEEDS_RESET) {
2046 fdc->state = RESETCTLR;
2047 fdc->flags &= ~FDC_NEEDS_RESET;
2048 } else
2049 fdc->state = DOSEEK;
2050 break;
2051 case DOSEEK:
2052 if (b_cylinder == (unsigned)fd->track)
2053 {
2054 fdc->state = SEEKCOMPLETE;
2055 break;
2056 }
2057#ifdef PC98
2058 pc98_fd_check_ready(fdu);
2059#endif
2060 if (fd_cmd(fdc, 3, NE7CMD_SEEK,
2061 fd->fdsu, b_cylinder * fd->ft->steptrac,
2062 0))
2063 {
2064 /*
2065 * seek command not accepted, looks like
2066 * the FDC went off to the Saints...
2067 */
2068 fdc->retry = 6; /* try a reset */
2069 return(retrier(fdc));
2070 }
2071 fd->track = FD_NO_TRACK;
2072 fdc->state = SEEKWAIT;
2073 return(0); /* will return later */
2074 case SEEKWAIT:
2075 /* allow heads to settle */
2076 timeout(fd_pseudointr, fdc, hz / 16);
2077 fdc->state = SEEKCOMPLETE;
2078 return(0); /* will return later */
2079 case SEEKCOMPLETE : /* SEEK DONE, START DMA */
2080 /* Make sure seek really happened*/
2081 if(fd->track == FD_NO_TRACK) {
2082 int descyl = b_cylinder * fd->ft->steptrac;
2083 do {
2084 /*
2085 * This might be a "ready changed" interrupt,
2086 * which cannot really happen since the
2087 * RDY pin is hardwired to + 5 volts. This
2088 * generally indicates a "bouncing" intr
2089 * line, so do one of the following:
2090 *
2091 * When running on an enhanced FDC that is
2092 * known to not go stuck after responding
2093 * with INVALID, fetch all interrupt states
2094 * until seeing either an INVALID or a
2095 * real interrupt condition.
2096 *
2097 * When running on a dumb old NE765, give
2098 * up immediately. The controller will
2099 * provide up to four dummy RC interrupt
2100 * conditions right after reset (for the
2101 * corresponding four drives), so this is
2102 * our only chance to get notice that it
2103 * was not the FDC that caused the interrupt.
2104 */
2105 if (fd_sense_int(fdc, &st0, &cyl)
2106 == FD_NOT_VALID)
2107 return 0;
2108 if(fdc->fdct == FDC_NE765
2109 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC)
2110 return 0; /* hope for a real intr */
2111 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
2112
2113 if (0 == descyl) {
2114 int failed = 0;
2115 /*
2116 * seek to cyl 0 requested; make sure we are
2117 * really there
2118 */
2119 if (fd_sense_drive_status(fdc, &st3))
2120 failed = 1;
2121#ifdef EPSON_NRDISK
2122 if (fdu == nrdu) st3 = NE7_ST3_T0;
2123#endif /* EPSON_NRDISK */
2124 if ((st3 & NE7_ST3_T0) == 0) {
2125 printf(
2126 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n",
2127 fdu, st3, NE7_ST3BITS);
2128 failed = 1;
2129 }
2130
2131 if (failed) {
2132 if(fdc->retry < 3)
2133 fdc->retry = 3;
2134 return (retrier(fdc));
2135 }
2136 }
2137#ifdef EPSON_NRDISK
2138 if (fdu == nrdu) cyl = descyl;
2139#endif
2140
2141 if (cyl != descyl) {
2142 printf(
2143 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n",
2144 fdu, descyl, cyl, st0);
2145 if (fdc->retry < 3)
2146 fdc->retry = 3;
2147 return (retrier(fdc));
2148 }
2149 }
2150
2151 fd->track = b_cylinder;
2152#ifdef EPSON_NRDISK
2153 if (fdu != nrdu) {
2154#endif /* EPSON_NRDISK */
2155#ifdef FDC_YE
2156 if (!(fdc->flags & FDC_PCMCIA))
2157#endif
2158 isa_dmastart(bp->b_flags, bp->b_data+fd->skip,
2159 format ? bp->b_bcount : fdblk, fdc->dmachan);
2160 sectrac = fd->ft->sectrac;
2161 sec = blknum % (sectrac * fd->ft->heads);
2162 head = sec / sectrac;
2163 sec = sec % sectrac + 1;
2164 fd->hddrv = ((head&1)<<2)+fdu;
2165
2166 if(format || !read)
2167 {
2168 /* make sure the drive is writable */
2169 if(fd_sense_drive_status(fdc, &st3) != 0)
2170 {
2171 /* stuck controller? */
2172 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2173 format ? bp->b_bcount : fdblk,
2174 fdc->dmachan);
2175 fdc->retry = 6; /* reset the beast */
2176 return (retrier(fdc));
2177 }
2178 if(st3 & NE7_ST3_WP)
2179 {
2180 /*
2181 * XXX YES! this is ugly.
2182 * in order to force the current operation
2183 * to fail, we will have to fake an FDC
2184 * error - all error handling is done
2185 * by the retrier()
2186 */
2187 fdc->status[0] = NE7_ST0_IC_AT;
2188 fdc->status[1] = NE7_ST1_NW;
2189 fdc->status[2] = 0;
2190 fdc->status[3] = fd->track;
2191 fdc->status[4] = head;
2192 fdc->status[5] = sec;
2193 fdc->retry = 8; /* break out immediately */
2194 fdc->state = IOTIMEDOUT; /* not really... */
2195 return (1);
2196 }
2197 }
2198
2199 if (format) {
2200#ifdef FDC_YE
2201 if (fdc->flags & FDC_PCMCIA)
2202 (void)fdcpio(fdcu,bp->b_flags,
2203 bp->b_data+fd->skip,
2204 bp->b_bcount);
2205#endif
2206 /* formatting */
2207 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu,
2208 finfo->fd_formb_secshift,
2209 finfo->fd_formb_nsecs,
2210 finfo->fd_formb_gaplen,
2211 finfo->fd_formb_fillbyte, 0)) {
2212 /* controller fell over */
2213 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2214 format ? bp->b_bcount : fdblk,
2215 fdc->dmachan);
2216 fdc->retry = 6;
2217 return (retrier(fdc));
2218 }
2219 } else {
2220#ifdef FDC_YE
2221 if (fdc->flags & FDC_PCMCIA) {
2222 /*
2223 * this seems to be necessary even when
2224 * reading data
2225 */
2226 SET_BCDR(1,fdblk,fdc->baseport);
2227
2228 /*
2229 * perform the write pseudo-DMA before
2230 * the WRITE command is sent
2231 */
2232 if (!read)
2233 (void)fdcpio(fdcu,bp->b_flags,
2234 bp->b_data+fd->skip,
2235 fdblk);
2236 }
2237#endif
2238 if (fd_cmd(fdc, 9,
2239 (read ? NE7CMD_READ : NE7CMD_WRITE),
2240 head << 2 | fdu, /* head & unit */
2241 fd->track, /* track */
2242 head,
2243 sec, /* sector + 1 */
2244 fd->ft->secsize, /* sector size */
2245 sectrac, /* sectors/track */
2246 fd->ft->gap, /* gap size */
2247 fd->ft->datalen, /* data length */
2248 0)) {
2249 /* the beast is sleeping again */
2250 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2251 format ? bp->b_bcount : fdblk,
2252 fdc->dmachan);
2253 fdc->retry = 6;
2254 return (retrier(fdc));
2255 }
2256 }
2257#ifdef FDC_YE
2258 if (fdc->flags & FDC_PCMCIA)
2259 /*
2260 * if this is a read, then simply await interrupt
2261 * before performing PIO
2262 */
2263 if (read && !fdcpio(fdcu,bp->b_flags,
2264 bp->b_data+fd->skip,fdblk)) {
2265 fd->tohandle = timeout(fd_iotimeout,
2266 (caddr_t)fdcu, hz);
2267 return(0); /* will return later */
2268 };
2269
2270 /*
2271 * write (or format) operation will fall through and
2272 * await completion interrupt
2273 */
2274#endif
2275 fdc->state = IOCOMPLETE;
2276 fd->tohandle = timeout(fd_iotimeout, fdc, hz);
2277 return (0); /* will return later */
2278#ifdef EPSON_NRDISK
2279 }
2280 else {
2281 nrdblkn = (nrd_t)((unsigned long)bp->b_blkno*DEV_BSIZE/fdblk
2282 + fd->skip/fdblk);
2283 nrd_LED_on();
2284 nrd_addrset(fdblk * nrdblkn);
2285 while (!nrd_check_ready()) DELAY(1);
2286 if (read) epson_insw(P_NRD_DATA,
2287 bp->b_data + fd->skip,
2288 fdblk / sizeof(short));
2289 else epson_outsw(P_NRD_DATA,
2290 bp->b_data + fd->skip,
2291 (format ? bp->b_bcount : fdblk)
2292 / sizeof(short));
2293
2294 blknum = (unsigned long)bp->b_blkno*DEV_BSIZE/fdblk
2295 + fd->skip/fdblk;
2296 sectrac = fd->ft->sectrac;
2297 sec = blknum % (sectrac * fd->ft->heads);
2298 head = sec / sectrac;
2299 sec = sec % sectrac + 1;
2300 fd->hddrv = ((head&1)<<2)+fdu;
2301
2302 if (nrdsec++ >= nrd_sec())
2303 nrdaddr = (nrd_t)(fd->track * 8 + head * 4);
2304 nrdsec = sec;
2305 fdc->state = IOCOMPLETE;
2306 }
2307#endif
2308#ifdef FDC_YE
2309 case PIOREAD:
2310 /*
2311 * actually perform the PIO read. The IOCOMPLETE case
2312 * removes the timeout for us.
2313 */
2314 (void)fdcpio(fdcu,bp->b_flags,bp->b_data+fd->skip,fdblk);
2315 fdc->state = IOCOMPLETE;
2316 /* FALLTHROUGH */
2317#endif
2318 case IOCOMPLETE: /* IO DONE, post-analyze */
2319#ifdef EPSON_NRDISK
2320 if (fdu != nrdu)
2321 untimeout(fd_iotimeout, fdc, fd->tohandle);
2322#else
2323 untimeout(fd_iotimeout, fdc, fd->tohandle);
2324#endif
2325
2326 if (fd_read_status(fdc, fd->fdsu)) {
2327 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2328 format ? bp->b_bcount : fdblk,
2329 fdc->dmachan);
2330 if (fdc->retry < 6)
2331 fdc->retry = 6; /* force a reset */
2332 return (retrier(fdc));
2333 }
2334
2335 fdc->state = IOTIMEDOUT;
2336
2337 /* FALLTHROUGH */
2338
2339 case IOTIMEDOUT:
2340#ifdef EPSON_NRDISK
2341 if (fdu != nrdu) {
2342#endif /* EPSON_NRDISK */
2343#ifdef FDC_YE
2344 if (!(fdc->flags & FDC_PCMCIA))
2345#endif
2346 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
2347 format ? bp->b_bcount : fdblk, fdc->dmachan);
2348#ifdef EPSON_NRDISK
2349 }
2350 else nrd_LED_off();
2351#endif /* EPSON_NRDISK */
2352 if (fdc->status[0] & NE7_ST0_IC) {
2353 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
2354 && fdc->status[1] & NE7_ST1_OR) {
2355 /*
2356 * DMA overrun. Someone hogged the bus
2357 * and didn't release it in time for the
2358 * next FDC transfer.
2359 * Just restart it, don't increment retry
2360 * count. (vak)
2361 */
2362 fdc->state = SEEKCOMPLETE;
2363 return (1);
2364 }
2365 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV
2366 && fdc->retry < 6)
2367 fdc->retry = 6; /* force a reset */
2368 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
2369 && fdc->status[2] & NE7_ST2_WC
2370 && fdc->retry < 3)
2371 fdc->retry = 3; /* force recalibrate */
2372 return (retrier(fdc));
2373 }
2374 /* All OK */
2375 fd->skip += fdblk;
2376 if (!format && fd->skip < bp->b_bcount - bp->b_resid) {
2377 /* set up next transfer */
2378 fdc->state = DOSEEK;
2379 } else {
2380 /* ALL DONE */
2381 fd->skip = 0;
2382 fdc->bp = NULL;
2383 /* Tell devstat we have finished with the transaction */
2384 devstat_end_transaction(&fd->device_stats,
2385 bp->b_bcount - bp->b_resid,
2386 DEVSTAT_TAG_NONE,
2387 (bp->b_flags & B_READ) ?
2388 DEVSTAT_READ : DEVSTAT_WRITE);
2389 biodone(bp);
2390 fdc->fd = (fd_p) 0;
2391 fdc->fdu = -1;
2392 fdc->state = FINDWORK;
2393 }
2394 return (1);
2395 case RESETCTLR:
2396 fdc_reset(fdc);
2397 fdc->retry++;
2398 fdc->state = RESETCOMPLETE;
2399 return (0);
2400 case RESETCOMPLETE:
2401 /*
2402 * Discard all the results from the reset so that they
2403 * can't cause an unexpected interrupt later.
2404 */
2405 for (i = 0; i < 4; i++)
2406 (void)fd_sense_int(fdc, &st0, &cyl);
2407 fdc->state = STARTRECAL;
2408 /* Fall through. */
2409 case STARTRECAL:
2410#ifdef PC98
2411 pc98_fd_check_ready(fdu);
2412#endif
2413 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) {
2414 /* arrgl */
2415 fdc->retry = 6;
2416 return (retrier(fdc));
2417 }
2418 fdc->state = RECALWAIT;
2419 return (0); /* will return later */
2420 case RECALWAIT:
2421 /* allow heads to settle */
2422 timeout(fd_pseudointr, fdc, hz / 8);
2423 fdc->state = RECALCOMPLETE;
2424 return (0); /* will return later */
2425 case RECALCOMPLETE:
2426 do {
2427 /*
2428 * See SEEKCOMPLETE for a comment on this:
2429 */
2430 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID)
2431 return 0;
2432 if(fdc->fdct == FDC_NE765
2433 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC)
2434 return 0; /* hope for a real intr */
2435 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
2436#ifdef EPSON_NRDISK
2437 if (fdu == nrdu) {
2438 st0 = NE7_ST0_IC_NT;
2439 cyl = 0;
2440 }
2441#endif
2442 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0)
2443 {
2444 if(fdc->retry > 3)
2445 /*
2446 * a recalibrate from beyond cylinder 77
2447 * will "fail" due to the FDC limitations;
2448 * since people used to complain much about
2449 * the failure message, try not logging
2450 * this one if it seems to be the first
2451 * time in a line
2452 */
2453 printf("fd%d: recal failed ST0 %b cyl %d\n",
2454 fdu, st0, NE7_ST0BITS, cyl);
2455 if(fdc->retry < 3) fdc->retry = 3;
2456 return (retrier(fdc));
2457 }
2458 fd->track = 0;
2459 /* Seek (probably) necessary */
2460 fdc->state = DOSEEK;
2461 return (1); /* will return immediatly */
2462 case MOTORWAIT:
2463 if(fd->flags & FD_MOTOR_WAIT)
2464 {
2465 return (0); /* time's not up yet */
2466 }
2467 if (fdc->flags & FDC_NEEDS_RESET) {
2468 fdc->state = RESETCTLR;
2469 fdc->flags &= ~FDC_NEEDS_RESET;
2470 } else {
2471 /*
2472 * If all motors were off, then the controller was
2473 * reset, so it has lost track of the current
2474 * cylinder. Recalibrate to handle this case.
2475 * But first, discard the results of the reset.
2476 */
2477 fdc->state = RESETCOMPLETE;
2478 }
2479 return (1); /* will return immediatly */
2480 default:
2481 device_print_prettyname(fdc->fdc_dev);
2482 printf("unexpected FD int->");
2483 if (fd_read_status(fdc, fd->fdsu) == 0)
2484 printf("FDC status :%x %x %x %x %x %x %x ",
2485 fdc->status[0],
2486 fdc->status[1],
2487 fdc->status[2],
2488 fdc->status[3],
2489 fdc->status[4],
2490 fdc->status[5],
2491 fdc->status[6] );
2492 else
2493 printf("No status available ");
2494 if (fd_sense_int(fdc, &st0, &cyl) != 0)
2495 {
2496 printf("[controller is dead now]\n");
2497 return (0);
2498 }
2499 printf("ST0 = %x, PCN = %x\n", st0, cyl);
2500 return (0);
2501 }
2502 /*XXX confusing: some branches return immediately, others end up here*/
2503 return (1); /* Come back immediatly to new state */
2504}
2505
2506static int
2507retrier(struct fdc_data *fdc)
2508{
2509 register struct buf *bp;
2510 struct fd_data *fd;
2511 int fdu;
2512
2513 bp = fdc->bp;
2514
2515 /* XXX shouldn't this be cached somewhere? */
2516 fdu = FDUNIT(minor(bp->b_dev));
2517 fd = devclass_get_softc(fd_devclass, fdu);
2518 if (fd->options & FDOPT_NORETRY)
2519 goto fail;
2520
2521 switch (fdc->retry) {
2522 case 0: case 1: case 2:
2523 fdc->state = SEEKCOMPLETE;
2524 break;
2525 case 3: case 4: case 5:
2526 fdc->state = STARTRECAL;
2527 break;
2528 case 6:
2529 fdc->state = RESETCTLR;
2530 break;
2531 case 7:
2532 break;
2533 default:
2534 fail:
2535 {
2536 dev_t sav_b_dev = bp->b_dev;
2537 /* Trick diskerr */
2538 bp->b_dev = makedev(major(bp->b_dev),
2539 (FDUNIT(minor(bp->b_dev))<<3)|RAW_PART);
2540 diskerr(bp, "fd", "hard error", LOG_PRINTF,
2541 fdc->fd->skip / DEV_BSIZE,
2542 (struct disklabel *)NULL);
2543 bp->b_dev = sav_b_dev;
2544 if (fdc->flags & FDC_STAT_VALID)
2545 {
2546 printf(
2547 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n",
2548 fdc->status[0], NE7_ST0BITS,
2549 fdc->status[1], NE7_ST1BITS,
2550 fdc->status[2], NE7_ST2BITS,
2551 fdc->status[3], fdc->status[4],
2552 fdc->status[5]);
2553 }
2554 else
2555 printf(" (No status)\n");
2556 }
2557 bp->b_flags |= B_ERROR;
2558 bp->b_error = EIO;
2559 bp->b_resid += bp->b_bcount - fdc->fd->skip;
2560 fdc->bp = NULL;
2561
2562 /* Tell devstat we have finished with the transaction */
2563 devstat_end_transaction(&fdc->fd->device_stats,
2564 bp->b_bcount - bp->b_resid,
2565 DEVSTAT_TAG_NONE,
2566 (bp->b_flags & B_READ) ? DEVSTAT_READ :
2567 DEVSTAT_WRITE);
2568 fdc->fd->skip = 0;
2569 biodone(bp);
2570 fdc->state = FINDWORK;
2571 fdc->flags |= FDC_NEEDS_RESET;
2572 fdc->fd = (fd_p) 0;
2573 fdc->fdu = -1;
2574 return (1);
2575 }
2576 fdc->retry++;
2577 return (1);
2578}
2579
2580static int
2581fdformat(dev, finfo, p)
2582 dev_t dev;
2583 struct fd_formb *finfo;
2584 struct proc *p;
2585{
2586 fdu_t fdu;
2587 fd_p fd;
2588
2589 struct buf *bp;
2590 int rv = 0, s;
2591 size_t fdblk;
2592
2593 fdu = FDUNIT(minor(dev));
2594 fd = devclass_get_softc(fd_devclass, fdu);
2595 fdblk = 128 << fd->ft->secsize;
2596
2597 /* set up a buffer header for fdstrategy() */
2598 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT);
2599 if(bp == 0)
2600 return ENOBUFS;
2601 /*
2602 * keep the process from being swapped
2603 */
2604 PHOLD(p);
2605 bzero((void *)bp, sizeof(struct buf));
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