2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu)
9 * aided by the Linux floppy driver modifications from David Bateman
10 * (dbateman@eng.uts.edu.au).
12 * Copyright (c) 1993, 1994 by
13 * jc@irbs.UUCP (John Capo)
14 * vak@zebub.msk.su (Serge Vakulenko)
15 * ache@astral.msk.su (Andrew A. Chernov)
17 * Copyright (c) 1993, 1994, 1995 by
18 * joerg_wunsch@uriah.sax.de (Joerg Wunsch)
19 * dufault@hda.com (Peter Dufault)
21 * Redistribution and use in source and binary forms, with or without
22 * modification, are permitted provided that the following conditions
24 * 1. Redistributions of source code must retain the above copyright
25 * notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
27 * notice, this list of conditions and the following disclaimer in the
28 * documentation and/or other materials provided with the distribution.
29 * 3. All advertising materials mentioning features or use of this software
30 * must display the following acknowledgement:
31 * This product includes software developed by the University of
32 * California, Berkeley and its contributors.
33 * 4. Neither the name of the University nor the names of its contributors
34 * may be used to endorse or promote products derived from this software
35 * without specific prior written permission.
37 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
38 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
39 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
40 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
41 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
42 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
43 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
45 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
46 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91
50 * $Id: fd.c,v 1.129 1998/12/14 16:29:58 bde Exp $
55 #include "opt_devfs.h"
60 #include <sys/param.h>
61 #include <sys/systm.h>
62 #include <sys/kernel.h>
64 #include <sys/fcntl.h>
65 #include <machine/clock.h>
66 #include <machine/ioctl_fd.h>
67 #include <sys/disklabel.h>
69 #include <sys/devicestat.h>
70 #include <sys/malloc.h>
72 #include <sys/syslog.h>
73 #include <i386/isa/isa.h>
74 #include <i386/isa/isa_device.h>
75 #include <i386/isa/fdreg.h>
76 #include <i386/isa/fdc.h>
77 #include <i386/isa/rtc.h>
78 #include <machine/stdarg.h>
80 #include <sys/devfsext.h>
83 /* misuse a flag to identify format operation */
84 #define B_FORMAT B_XXX
86 /* configuration flags */
87 #define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */
89 #define FDC_IS_PCMCIA (1 << 1) /* if successful probe, then it's
93 /* internally used only, not really from CMOS: */
94 #define RTCFDT_144M_PRETENDED 0x1000
97 * this biotab field doubles as a field for the physical unit number
100 #define id_physid id_scsiid
102 /* error returns for fd_cmd() */
104 #define FD_NOT_VALID -2
105 #define FDC_ERRMAX 100 /* do not log more */
108 #define NUMDENS (NUMTYPES - 6)
110 /* These defines (-1) must match index for fd_types */
111 #define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */
112 #define NO_TYPE 0 /* must match NO_TYPE in ft.c */
122 #define FD_1480in5_25 9
123 #define FD_1440in5_25 10
124 #define FD_820in5_25 11
125 #define FD_800in5_25 12
126 #define FD_720in5_25 13
127 #define FD_360in5_25 14
130 static struct fd_type fd_types[NUMTYPES] =
132 { 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */
133 { 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */
134 { 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */
135 { 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */
136 { 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */
137 { 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */
138 { 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */
139 { 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */
141 { 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */
142 { 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */
143 { 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */
144 { 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */
145 { 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */
146 { 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */
149 #define DRVS_PER_CTLR 2 /* 2 floppies */
151 /***********************************************************************\
152 * Per controller structure. *
153 \***********************************************************************/
154 struct fdc_data fdc_data[NFDC];
156 /***********************************************************************\
157 * Per drive structure. *
158 * N per controller (DRVS_PER_CTLR) *
159 \***********************************************************************/
160 static struct fd_data {
161 struct fdc_data *fdc; /* pointer to controller structure */
162 int fdsu; /* this units number on this controller */
163 int type; /* Drive type (FD_1440...) */
164 struct fd_type *ft; /* pointer to the type descriptor */
166 #define FD_OPEN 0x01 /* it's open */
167 #define FD_ACTIVE 0x02 /* it's active */
168 #define FD_MOTOR 0x04 /* motor should be on */
169 #define FD_MOTOR_WAIT 0x08 /* motor coming up */
172 #define FD_NO_TRACK -2
173 int track; /* where we think the head is */
174 int options; /* user configurable options, see ioctl_fd.h */
175 struct callout_handle toffhandle;
176 struct callout_handle tohandle;
177 struct devstat device_stats;
179 void *bdevs[1 + NUMDENS + MAXPARTITIONS];
180 void *cdevs[1 + NUMDENS + MAXPARTITIONS];
184 /***********************************************************************\
185 * Throughout this file the following conventions will be used: *
186 * fd is a pointer to the fd_data struct for the drive in question *
187 * fdc is a pointer to the fdc_data struct for the controller *
188 * fdu is the floppy drive unit number *
189 * fdcu is the floppy controller unit number *
190 * fdsu is the floppy drive unit number on that controller. (sub-unit) *
191 \***********************************************************************/
195 static int yeattach(struct isa_device *);
198 /* autoconfig functions */
199 static int fdprobe(struct isa_device *);
200 static int fdattach(struct isa_device *);
202 /* needed for ft driver, thus exported */
204 int out_fdc(fdcu_t, int);
206 /* internal functions */
207 static void set_motor(fdcu_t, int, int);
210 static timeout_t fd_turnoff;
211 static timeout_t fd_motor_on;
212 static void fd_turnon(fdu_t);
213 static void fdc_reset(fdc_p);
214 static int fd_in(fdcu_t, int *);
215 static void fdstart(fdcu_t);
216 static timeout_t fd_iotimeout;
217 static timeout_t fd_pseudointr;
218 static ointhand2_t fdintr;
219 static int fdstate(fdcu_t, fdc_p);
220 static int retrier(fdcu_t);
221 static int fdformat(dev_t, struct fd_formb *, struct proc *);
223 static int enable_fifo(fdc_p fdc);
225 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */
231 #define SEEKCOMPLETE 3
233 #define RECALCOMPLETE 5
239 #define IOTIMEDOUT 11
240 #define RESETCOMPLETE 12
246 static char const * const fdstates[] =
266 /* CAUTION: fd_debug causes huge amounts of logging output */
267 static int volatile fd_debug = 0;
268 #define TRACE0(arg) if(fd_debug) printf(arg)
269 #define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2)
270 #else /* FDC_DEBUG */
272 #define TRACE1(arg1, arg2)
273 #endif /* FDC_DEBUG */
277 #include <sys/select.h>
278 #include <pccard/cardinfo.h>
279 #include <pccard/driver.h>
280 #include <pccard/slot.h>
283 * PC-Card (PCMCIA) specific code.
285 static int yeinit(struct pccard_devinfo *); /* init device */
286 static void yeunload(struct pccard_devinfo *); /* Disable driver */
287 static int yeintr(struct pccard_devinfo *); /* Interrupt handler */
289 static struct pccard_device ye_info = {
294 0, /* Attributes - presently unused */
295 &bio_imask /* Interrupt mask for device */
298 DATA_SET(pccarddrv_set, ye_info);
301 * this is the secret PIO data port (offset from base)
303 #define FDC_YE_DATAPORT 6
306 * Initialize the device - called from Slot manager.
308 static int yeinit(struct pccard_devinfo *devi)
310 fdc_p fdc = &fdc_data[devi->isahd.id_unit];
312 /* validate unit number. */
313 if (devi->isahd.id_unit >= NFDC)
315 fdc->baseport = devi->isahd.id_iobase;
319 outb(fdc->baseport+FDOUT, 0);
321 outb(fdc->baseport+FDOUT, FDO_FRST);
326 if (yeattach(&devi->isahd) == 0)
333 * yeunload - unload the driver and clear the table.
335 * This is usually called when the card is ejected, but
336 * can be caused by a modunload of a controller driver.
337 * The idea is to reset the driver's view of the device
338 * and ensure that any driver entry points such as
339 * read and write do not hang.
341 static void yeunload(struct pccard_devinfo *devi)
343 if (fd_data[devi->isahd.id_unit].type == NO_TYPE)
347 * this prevents Fdopen() and fdstrategy() from attempting
348 * to access unloaded controller
350 fd_data[devi->isahd.id_unit].type = NO_TYPE;
352 printf("fdc%d: unload\n", devi->isahd.id_unit);
356 * yeintr - Shared interrupt called from
357 * front end of PC-Card handler.
359 static int yeintr(struct pccard_devinfo *devi)
361 fdintr((fdcu_t)devi->isahd.id_unit);
364 #endif /* NCARD > 0 */
368 /* autoconfig structure */
370 struct isa_driver fdcdriver = {
371 fdprobe, fdattach, "fdc",
374 static d_open_t Fdopen; /* NOTE, not fdopen */
375 static d_read_t fdread;
376 static d_write_t fdwrite;
377 static d_close_t fdclose;
378 static d_ioctl_t fdioctl;
379 static d_strategy_t fdstrategy;
381 /* even if SLICE defined, these are needed for the ft support. */
386 static struct cdevsw fd_cdevsw = {
387 Fdopen, fdclose, fdread, fdwrite,
388 fdioctl, nostop, nullreset, nodevtotty,
389 seltrue, nommap, fdstrategy, "fd",
390 NULL, -1, nodump, nopsize,
394 static struct isa_device *fdcdevs[NFDC];
398 fdc_err(fdcu_t fdcu, const char *s)
400 fdc_data[fdcu].fdc_errs++;
402 if(fdc_data[fdcu].fdc_errs < FDC_ERRMAX)
403 printf("fdc%d: %s", fdcu, s);
404 else if(fdc_data[fdcu].fdc_errs == FDC_ERRMAX)
405 printf("fdc%d: too many errors, not logging any more\n",
413 * fd_cmd: Send a command to the chip. Takes a varargs with this structure:
415 * # of output bytes, output bytes as ints ...,
416 * # of input bytes, input bytes as ints ...
420 fd_cmd(fdcu_t fdcu, int n_out, ...)
428 cmd = (u_char)(va_arg(ap, int));
431 for (n = 0; n < n_out; n++)
433 if (out_fdc(fdcu, va_arg(ap, int)) < 0)
436 snprintf(msg, sizeof(msg),
437 "cmd %x failed at out byte %d of %d\n",
439 return fdc_err(fdcu, msg);
442 n_in = va_arg(ap, int);
443 for (n = 0; n < n_in; n++)
445 int *ptr = va_arg(ap, int *);
446 if (fd_in(fdcu, ptr) < 0)
449 snprintf(msg, sizeof(msg),
450 "cmd %02x failed at in byte %d of %d\n",
452 return fdc_err(fdcu, msg);
460 enable_fifo(fdc_p fdc)
464 if ((fdc->flags & FDC_HAS_FIFO) == 0) {
468 * Cannot use fd_cmd the normal way here, since
469 * this might be an invalid command. Thus we send the
470 * first byte, and check for an early turn of data directon.
473 if (out_fdc(fdc->fdcu, I8207X_CONFIGURE) < 0)
474 return fdc_err(fdc->fdcu, "Enable FIFO failed\n");
476 /* If command is invalid, return */
478 while ((i = inb(fdc->baseport + FDSTS) & (NE7_DIO | NE7_RQM))
479 != NE7_RQM && j-- > 0)
480 if (i == (NE7_DIO | NE7_RQM)) {
486 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) {
488 return fdc_err(fdc->fdcu, "Enable FIFO failed\n");
490 fdc->flags |= FDC_HAS_FIFO;
493 if (fd_cmd(fdc->fdcu, 4,
494 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0)
495 return fdc_err(fdc->fdcu, "Re-enable FIFO failed\n");
500 fd_sense_drive_status(fdc_p fdc, int *st3p)
504 if (fd_cmd(fdc->fdcu, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3))
506 return fdc_err(fdc->fdcu, "Sense Drive Status failed\n");
515 fd_sense_int(fdc_p fdc, int *st0p, int *cylp)
519 int ret = fd_cmd(fdc->fdcu, 1, NE7CMD_SENSEI, 1, &st0);
523 (void)fdc_err(fdc->fdcu,
524 "sense intr err reading stat reg 0\n");
531 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV)
534 * There doesn't seem to have been an interrupt.
539 if (fd_in(fdc->fdcu, &cyl) < 0)
541 return fdc_err(fdc->fdcu, "can't get cyl num\n");
552 fd_read_status(fdc_p fdc, int fdsu)
556 for (i = 0; i < 7; i++)
559 * XXX types are poorly chosen. Only bytes can by read
560 * from the hardware, but fdc->status[] wants u_ints and
561 * fd_in() gives ints.
565 ret = fd_in(fdc->fdcu, &status);
566 fdc->status[i] = status;
572 fdc->flags |= FDC_STAT_VALID;
574 fdc->flags &= ~FDC_STAT_VALID;
579 /****************************************************************************/
580 /* autoconfiguration stuff */
581 /****************************************************************************/
584 * probe for existance of controller
587 fdprobe(struct isa_device *dev)
589 fdcu_t fdcu = dev->id_unit;
590 if(fdc_data[fdcu].flags & FDC_ATTACHED)
592 printf("fdc%d: unit used multiple times\n", fdcu);
597 fdc_data[fdcu].baseport = dev->id_iobase;
599 /* First - lets reset the floppy controller */
600 outb(dev->id_iobase+FDOUT, 0);
602 outb(dev->id_iobase+FDOUT, FDO_FRST);
604 /* see if it can handle a command */
606 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
613 * don't succeed on probe; wait
614 * for PCCARD subsystem to do it
616 if (dev->id_flags & FDC_IS_PCMCIA)
623 * wire controller into system, look for floppy units
626 fdattach(struct isa_device *dev)
630 fdcu_t fdcu = dev->id_unit;
631 fdc_p fdc = fdc_data + fdcu;
633 int fdsu, st0, st3, i;
634 struct isa_device *fdup;
642 dev->id_ointr = fdintr;
644 fdc->flags |= FDC_ATTACHED;
645 fdc->dmachan = dev->id_drq;
646 /* Acquire the DMA channel forever, The driver will do the rest */
647 isa_dma_acquire(fdc->dmachan);
648 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */);
649 fdc->state = DEVIDLE;
650 /* reset controller, turn motor off, clear fdout mirror reg */
651 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0)));
652 bufq_init(&fdc->head);
654 /* check for each floppy drive */
655 for (fdup = isa_biotab_fdc; fdup->id_driver != 0; fdup++) {
656 if (fdup->id_iobase != dev->id_iobase)
662 fdsu = fdup->id_physid;
663 /* look up what bios thinks we have */
665 case 0: if (dev->id_flags & FDC_PRETEND_D0)
666 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED;
668 fdt = (rtcin(RTC_FDISKETTE) & 0xf0);
670 case 1: fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0);
672 default: fdt = RTCFDT_NONE;
675 /* is there a unit? */
676 if ((fdt == RTCFDT_NONE)
683 set_motor(fdcu, fdsu, TURNON);
684 DELAY(1000000); /* 1 sec */
687 fd_cmd(fdcu, 1, NE7CMD_VERSION, 1, &ic_type) == 0)
689 #ifdef FDC_PRINT_BOGUS_CHIPTYPE
690 printf("fdc%d: ", fdcu);
692 ic_type = (u_char)ic_type;
695 #ifdef FDC_PRINT_BOGUS_CHIPTYPE
698 fdc->fdct = FDC_NE765;
701 #ifdef FDC_PRINT_BOGUS_CHIPTYPE
702 printf("Intel 82077\n");
704 fdc->fdct = FDC_I82077;
707 #ifdef FDC_PRINT_BOGUS_CHIPTYPE
708 printf("NEC 72065B\n");
710 fdc->fdct = FDC_NE72065;
713 #ifdef FDC_PRINT_BOGUS_CHIPTYPE
714 printf("unknown IC type %02x\n", ic_type);
716 fdc->fdct = FDC_UNKNOWN;
719 if (fdc->fdct != FDC_NE765 &&
720 fdc->fdct != FDC_UNKNOWN &&
721 enable_fifo(fdc) == 0) {
722 printf("fdc%d: FIFO enabled", fdcu);
723 printf(", %d bytes threshold\n",
727 if ((fd_cmd(fdcu, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) &&
728 (st3 & NE7_ST3_T0)) {
729 /* if at track 0, first seek inwards */
730 /* seek some steps: */
731 (void)fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0);
732 DELAY(300000); /* ...wait a moment... */
733 (void)fd_sense_int(fdc, 0, 0); /* make ctrlr happy */
736 /* If we're at track 0 first seek inwards. */
737 if ((fd_sense_drive_status(fdc, &st3) == 0) &&
738 (st3 & NE7_ST3_T0)) {
739 /* Seek some steps... */
740 if (fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) {
741 /* ...wait a moment... */
743 /* make ctrlr happy: */
744 (void)fd_sense_int(fdc, 0, 0);
748 for(i = 0; i < 2; i++) {
750 * we must recalibrate twice, just in case the
751 * heads have been beyond cylinder 76, since most
752 * FDCs still barf when attempting to recalibrate
756 if (fd_cmd(fdcu, 2, NE7CMD_RECAL, fdsu, 0) == 0) {
757 /* a second being enough for full stroke seek*/
758 DELAY(i == 0? 1000000: 300000);
760 /* anything responding? */
761 if (fd_sense_int(fdc, &st0, 0) == 0 &&
762 (st0 & NE7_ST0_EC) == 0)
763 break; /* already probed succesfully */
767 set_motor(fdcu, fdsu, TURNOFF);
769 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */
772 fd->track = FD_NO_TRACK;
776 callout_handle_init(&fd->toffhandle);
777 callout_handle_init(&fd->tohandle);
778 printf("fd%d: ", fdu);
782 printf("1.2MB 5.25in\n");
785 case RTCFDT_144M | RTCFDT_144M_PRETENDED:
786 printf("config-pretended ");
790 printf("1.44MB 3.5in\n");
795 printf("2.88MB 3.5in - 1.44MB mode\n");
799 printf("360KB 5.25in\n");
803 printf("720KB 3.5in\n");
813 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK,
814 UID_ROOT, GID_OPERATOR, 0640,
816 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR,
817 UID_ROOT, GID_OPERATOR, 0640,
819 for (i = 1; i < 1 + NUMDENS; i++) {
821 * XXX this and the lookup in Fdopen() should be
830 if (i != FD_720 && i != FD_800 && i != FD_820)
834 if (i != FD_360 && i != FD_720 && i != FD_800
835 && i != FD_820 && i != FD_1200
836 && i != FD_1440 && i != FD_1480)
840 if (i != FD_720 && i != FD_800 && i != FD_820
841 && i != FD_1200 && i != FD_1440
842 && i != FD_1480 && i != FD_1720)
846 typesize = fd_types[i - 1].size / 2;
848 * XXX all these conversions give bloated code and
851 if (typesize == 1476)
853 if (typesize == 1722)
855 typemynor = mynor | i;
857 devfs_add_devswf(&fd_cdevsw, typemynor, DV_BLK,
858 UID_ROOT, GID_OPERATOR, 0640,
859 "fd%d.%d", fdu, typesize);
861 devfs_add_devswf(&fd_cdevsw, typemynor, DV_CHR,
862 UID_ROOT, GID_OPERATOR, 0640,
863 "rfd%d.%d", fdu, typesize);
866 for (i = 0; i < MAXPARTITIONS; i++) {
867 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0],
868 "fd%d%c", fdu, 'a' + i);
869 fd->cdevs[1 + NUMDENS + i] =
870 devfs_makelink(fd->cdevs[0],
871 "rfd%d%c", fdu, 'a' + i);
875 * Export the drive to the devstat interface.
877 devstat_add_entry(&fd->device_stats, "fd",
879 DEVSTAT_NO_ORDERED_TAGS,
880 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER);
891 * this is a subset of fdattach() optimized for the Y-E Data
892 * PCMCIA floppy drive.
894 static int yeattach(struct isa_device *dev)
896 fdcu_t fdcu = dev->id_unit;
897 fdc_p fdc = fdc_data + fdcu;
898 fdsu_t fdsu = 0; /* assume 1 drive per YE controller */
909 * the FDC_PCMCIA flag is used to to indicate special PIO is used
912 fdc->flags = FDC_ATTACHED|FDC_PCMCIA;
913 fdc->state = DEVIDLE;
914 /* reset controller, turn motor off, clear fdout mirror reg */
915 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0)));
916 bufq_init(&fdc->head);
918 * assume 2 drives/ "normal" controller
922 printf("fdu %d >= NFD\n",fdu);
927 set_motor(fdcu, fdsu, TURNON);
928 DELAY(1000000); /* 1 sec */
929 fdc->fdct = FDC_NE765;
931 if ((fd_cmd(fdcu, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) &&
932 (st3 & NE7_ST3_T0)) {
933 /* if at track 0, first seek inwards */
934 /* seek some steps: */
935 (void)fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0);
936 DELAY(300000); /* ...wait a moment... */
937 (void)fd_sense_int(fdc, 0, 0); /* make ctrlr happy */
940 /* If we're at track 0 first seek inwards. */
941 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) {
942 /* Seek some steps... */
943 if (fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) {
944 /* ...wait a moment... */
946 /* make ctrlr happy: */
947 (void)fd_sense_int(fdc, 0, 0);
951 for(i = 0; i < 2; i++) {
953 * we must recalibrate twice, just in case the
954 * heads have been beyond cylinder 76, since most
955 * FDCs still barf when attempting to recalibrate
959 if (fd_cmd(fdcu, 2, NE7CMD_RECAL, fdsu, 0) == 0) {
960 /* a second being enough for full stroke seek*/
961 DELAY(i == 0? 1000000: 300000);
963 /* anything responding? */
964 if (fd_sense_int(fdc, &st0, 0) == 0 &&
965 (st0 & NE7_ST0_EC) == 0)
966 break; /* already probed succesfully */
970 set_motor(fdcu, fdsu, TURNOFF);
972 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */
975 fd->track = FD_NO_TRACK;
979 printf("fdc%d: 1.44MB 3.5in PCMCIA\n", fdcu);
984 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK,
985 UID_ROOT, GID_OPERATOR, 0640,
987 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR,
988 UID_ROOT, GID_OPERATOR, 0640,
991 * XXX this and the lookup in Fdopen() should be
994 typemynor = mynor | FD_1440;
995 typesize = fd_types[FD_1440 - 1].size / 2;
997 * XXX all these conversions give bloated code and
1000 if (typesize == 1476)
1002 if (typesize == 1722)
1004 fd->bdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor,
1005 DV_BLK, UID_ROOT, GID_OPERATOR,
1006 0640, "fd%d.%d", fdu, typesize);
1007 fd->cdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor,
1008 DV_CHR, UID_ROOT, GID_OPERATOR,
1009 0640,"rfd%d.%d", fdu, typesize);
1010 for (i = 0; i < MAXPARTITIONS; i++) {
1011 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0],
1012 "fd%d%c", fdu, 'a' + i);
1013 fd->cdevs[1 + NUMDENS + i] = devfs_makelink(fd->cdevs[0],
1014 "rfd%d%c", fdu, 'a' + i);
1021 /****************************************************************************/
1022 /* motor control stuff */
1023 /* remember to not deselect the drive we're working on */
1024 /****************************************************************************/
1026 set_motor(fdcu_t fdcu, int fdsu, int turnon)
1028 int fdout = fdc_data[fdcu].fdout;
1029 int needspecify = 0;
1032 fdout &= ~FDO_FDSEL;
1033 fdout |= (FDO_MOEN0 << fdsu) + fdsu;
1035 fdout &= ~(FDO_MOEN0 << fdsu);
1038 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0)
1039 /* gonna turn off the last drive, put FDC to bed */
1040 fdout &= ~ (FDO_FRST|FDO_FDMAEN);
1042 /* make sure controller is selected and specified */
1043 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0)
1045 fdout |= (FDO_FRST|FDO_FDMAEN);
1048 outb(fdc_data[fdcu].baseport+FDOUT, fdout);
1049 fdc_data[fdcu].fdout = fdout;
1050 TRACE1("[0x%x->FDOUT]", fdout);
1055 * special case: since we have just woken up the FDC
1056 * from its sleep, we silently assume the command will
1057 * be accepted, and do not test for a timeout
1059 (void)fd_cmd(fdcu, 3, NE7CMD_SPECIFY,
1060 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1062 if (fdc_data[fdcu].flags & FDC_HAS_FIFO)
1063 (void) enable_fifo(&fdc_data[fdcu]);
1068 fd_turnoff(void *arg1)
1070 fdu_t fdu = (fdu_t)arg1;
1072 fd_p fd = fd_data + fdu;
1074 TRACE1("[fd%d: turnoff]", fdu);
1077 * Don't turn off the motor yet if the drive is active.
1078 * XXX shouldn't even schedule turnoff until drive is inactive
1079 * and nothing is queued on it.
1081 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fdu) {
1082 fd->toffhandle = timeout(fd_turnoff, arg1, 4 * hz);
1087 fd->flags &= ~FD_MOTOR;
1088 set_motor(fd->fdc->fdcu, fd->fdsu, TURNOFF);
1093 fd_motor_on(void *arg1)
1095 fdu_t fdu = (fdu_t)arg1;
1098 fd_p fd = fd_data + fdu;
1100 fd->flags &= ~FD_MOTOR_WAIT;
1101 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT))
1103 fdintr(fd->fdc->fdcu);
1109 fd_turnon(fdu_t fdu)
1111 fd_p fd = fd_data + fdu;
1112 if(!(fd->flags & FD_MOTOR))
1114 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT);
1115 set_motor(fd->fdc->fdcu, fd->fdsu, TURNON);
1116 timeout(fd_motor_on, (caddr_t)fdu, hz); /* in 1 sec its ok */
1121 fdc_reset(fdc_p fdc)
1123 fdcu_t fdcu = fdc->fdcu;
1125 /* Try a reset, keep motor on */
1126 outb(fdc->baseport + FDOUT, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
1127 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
1129 /* enable FDC, but defer interrupts a moment */
1130 outb(fdc->baseport + FDOUT, fdc->fdout & ~FDO_FDMAEN);
1131 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN);
1133 outb(fdc->baseport + FDOUT, fdc->fdout);
1134 TRACE1("[0x%x->FDOUT]", fdc->fdout);
1136 /* XXX after a reset, silently believe the FDC will accept commands */
1137 (void)fd_cmd(fdcu, 3, NE7CMD_SPECIFY,
1138 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1140 if (fdc->flags & FDC_HAS_FIFO)
1141 (void) enable_fifo(fdc);
1144 /****************************************************************************/
1146 /****************************************************************************/
1150 int baseport = fdc_data[fdcu].baseport;
1152 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM))
1153 != (NE7_DIO|NE7_RQM) && j-- > 0)
1155 return fdc_err(fdcu, "ready for output in input\n");
1157 return fdc_err(fdcu, bootverbose? "input ready timeout\n": 0);
1159 i = inb(baseport+FDDATA);
1160 TRACE1("[FDDATA->0x%x]", (unsigned char)i);
1162 #else /* !FDC_DEBUG */
1163 return inb(baseport+FDDATA);
1164 #endif /* FDC_DEBUG */
1168 * fd_in: Like in_fdc, but allows you to see if it worked.
1171 fd_in(fdcu_t fdcu, int *ptr)
1173 int baseport = fdc_data[fdcu].baseport;
1175 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM))
1176 != (NE7_DIO|NE7_RQM) && j-- > 0)
1178 return fdc_err(fdcu, "ready for output in input\n");
1180 return fdc_err(fdcu, bootverbose? "input ready timeout\n": 0);
1182 i = inb(baseport+FDDATA);
1183 TRACE1("[FDDATA->0x%x]", (unsigned char)i);
1186 #else /* !FDC_DEBUG */
1187 i = inb(baseport+FDDATA);
1191 #endif /* FDC_DEBUG */
1195 out_fdc(fdcu_t fdcu, int x)
1197 int baseport = fdc_data[fdcu].baseport;
1200 /* Check that the direction bit is set */
1202 while ((inb(baseport+FDSTS) & NE7_DIO) && i-- > 0);
1203 if (i <= 0) return fdc_err(fdcu, "direction bit not set\n");
1205 /* Check that the floppy controller is ready for a command */
1207 while ((inb(baseport+FDSTS) & NE7_RQM) == 0 && i-- > 0);
1209 return fdc_err(fdcu, bootverbose? "output ready timeout\n": 0);
1211 /* Send the command and return */
1212 outb(baseport+FDDATA, x);
1213 TRACE1("[0x%x->FDDATA]", x);
1217 /****************************************************************************/
1218 /* fdopen/fdclose */
1219 /****************************************************************************/
1221 Fdopen(dev_t dev, int flags, int mode, struct proc *p)
1223 fdu_t fdu = FDUNIT(minor(dev));
1224 int type = FDTYPE(minor(dev));
1230 fdc = fd_data[fdu].fdc;
1231 if ((fdc == NULL) || (fd_data[fdu].type == NO_TYPE))
1236 type = fd_data[fdu].type;
1239 * For each type of basic drive, make sure we are trying
1240 * to open a type it can do,
1242 if (type != fd_data[fdu].type) {
1243 switch (fd_data[fdu].type) {
1255 type = FD_1480in5_25;
1258 type = FD_1440in5_25;
1261 type = FD_820in5_25;
1264 type = FD_800in5_25;
1267 type = FD_720in5_25;
1270 type = FD_360in5_25;
1277 if ( type != FD_1720
1289 fd_data[fdu].ft = fd_types + type - 1;
1290 fd_data[fdu].flags |= FD_OPEN;
1296 fdclose(dev_t dev, int flags, int mode, struct proc *p)
1298 fdu_t fdu = FDUNIT(minor(dev));
1300 fd_data[fdu].flags &= ~FD_OPEN;
1301 fd_data[fdu].options &= ~FDOPT_NORETRY;
1307 fdread(dev_t dev, struct uio *uio, int ioflag)
1309 return (physio(fdstrategy, NULL, dev, 1, minphys, uio));
1313 fdwrite(dev_t dev, struct uio *uio, int ioflag)
1315 return (physio(fdstrategy, NULL, dev, 0, minphys, uio));
1319 /****************************************************************************/
1321 /****************************************************************************/
1323 fdstrategy(struct buf *bp)
1325 unsigned nblocks, blknum, cando;
1333 fdu = FDUNIT(minor(bp->b_dev));
1338 if (fd->type == NO_TYPE) {
1339 bp->b_error = ENXIO;
1340 bp->b_flags |= B_ERROR;
1342 * I _refuse_ to use a goto
1349 fdblk = 128 << (fd->ft->secsize);
1350 if (!(bp->b_flags & B_FORMAT)) {
1351 if ((fdu >= NFD) || (bp->b_blkno < 0)) {
1353 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n",
1354 fdu, (u_long)bp->b_blkno, bp->b_bcount);
1355 bp->b_error = EINVAL;
1356 bp->b_flags |= B_ERROR;
1359 if ((bp->b_bcount % fdblk) != 0) {
1360 bp->b_error = EINVAL;
1361 bp->b_flags |= B_ERROR;
1367 * Set up block calculations.
1369 if (bp->b_blkno > 20000000) {
1371 * Reject unreasonably high block number, prevent the
1372 * multiplication below from overflowing.
1374 bp->b_error = EINVAL;
1375 bp->b_flags |= B_ERROR;
1378 blknum = (unsigned) bp->b_blkno * DEV_BSIZE/fdblk;
1379 nblocks = fd->ft->size;
1381 if (blknum + (bp->b_bcount / fdblk) > nblocks) {
1382 if (blknum <= nblocks) {
1383 cando = (nblocks - blknum) * fdblk;
1384 bp->b_resid = bp->b_bcount - cando;
1386 goto bad; /* not actually bad but EOF */
1388 bp->b_error = EINVAL;
1389 bp->b_flags |= B_ERROR;
1393 bp->b_pblkno = bp->b_blkno;
1395 bufqdisksort(&fdc->head, bp);
1396 untimeout(fd_turnoff, (caddr_t)fdu, fd->toffhandle); /* a good idea */
1398 /* Tell devstat we are starting on the transaction */
1399 devstat_start_transaction(&fd->device_stats);
1409 /***************************************************************\
1411 * We have just queued something.. if the controller is not busy *
1412 * then simulate the case where it has just finished a command *
1413 * So that it (the interrupt routine) looks on the queue for more*
1414 * work to do and picks up what we just added. *
1415 * If the controller is already busy, we need do nothing, as it *
1416 * will pick up our work when the present work completes *
1417 \***************************************************************/
1419 fdstart(fdcu_t fdcu)
1424 if(fdc_data[fdcu].state == DEVIDLE)
1432 fd_iotimeout(void *arg1)
1438 fdcu = (fdcu_t)arg1;
1439 fdc = fdc_data + fdcu;
1440 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu);
1443 * Due to IBM's brain-dead design, the FDC has a faked ready
1444 * signal, hardwired to ready == true. Thus, any command
1445 * issued if there's no diskette in the drive will _never_
1446 * complete, and must be aborted by resetting the FDC.
1447 * Many thanks, Big Blue!
1448 * The FDC must not be reset directly, since that would
1449 * interfere with the state machine. Instead, pretend that
1450 * the command completed but was invalid. The state machine
1451 * will reset the FDC and retry once.
1454 fdc->status[0] = NE7_ST0_IC_IV;
1455 fdc->flags &= ~FDC_STAT_VALID;
1456 fdc->state = IOTIMEDOUT;
1461 /* just ensure it has the right spl */
1463 fd_pseudointr(void *arg1)
1465 fdcu_t fdcu = (fdcu_t)arg1;
1473 /***********************************************************************\
1475 * keep calling the state machine until it returns a 0 *
1476 * ALWAYS called at SPLBIO *
1477 \***********************************************************************/
1481 fdc_p fdc = fdc_data + fdcu;
1482 while(fdstate(fdcu, fdc))
1488 * magic pseudo-DMA initialization for YE FDC. Sets count and
1491 #define SET_BCDR(wr,cnt,port) outb(port,(((cnt)-1) & 0xff)); \
1492 outb(port+1,((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f)))
1495 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy
1497 static int fdcpio(fdcu_t fdcu, long flags, caddr_t addr, u_int count)
1499 u_char *cptr = (u_char *)addr;
1500 fdc_p fdc = &fdc_data[fdcu];
1501 int io = fdc->baseport;
1503 if (flags & B_READ) {
1504 if (fdc->state != PIOREAD) {
1505 fdc->state = PIOREAD;
1508 SET_BCDR(0,count,io);
1509 insb(io+FDC_YE_DATAPORT,cptr,count);
1511 outsb(io+FDC_YE_DATAPORT,cptr,count);
1512 SET_BCDR(0,count,io);
1518 /***********************************************************************\
1519 * The controller state machine. *
1520 * if it returns a non zero value, it should be called again immediatly *
1521 \***********************************************************************/
1523 fdstate(fdcu_t fdcu, fdc_p fdc)
1525 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3;
1526 unsigned blknum = 0, b_cylinder = 0;
1527 fdu_t fdu = fdc->fdu;
1529 register struct buf *bp;
1530 struct fd_formb *finfo = NULL;
1533 bp = bufq_first(&fdc->head);
1535 /***********************************************\
1536 * nothing left for this controller to do *
1537 * Force into the IDLE state, *
1538 \***********************************************/
1539 fdc->state = DEVIDLE;
1542 printf("fd%d: unexpected valid fd pointer\n",
1547 TRACE1("[fdc%d IDLE]", fdcu);
1550 fdu = FDUNIT(minor(bp->b_dev));
1552 fdblk = 128 << fd->ft->secsize;
1553 if (fdc->fd && (fd != fdc->fd))
1555 printf("fd%d: confused fd pointers\n", fdu);
1557 read = bp->b_flags & B_READ;
1558 format = bp->b_flags & B_FORMAT;
1560 finfo = (struct fd_formb *)bp->b_data;
1561 fd->skip = (char *)&(finfo->fd_formb_cylno(0))
1564 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) {
1565 blknum = (unsigned) bp->b_pblkno * DEV_BSIZE/fdblk +
1567 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads);
1569 TRACE1("fd%d", fdu);
1570 TRACE1("[%s]", fdstates[fdc->state]);
1571 TRACE1("(0x%x)", fd->flags);
1572 untimeout(fd_turnoff, (caddr_t)fdu, fd->toffhandle);
1573 fd->toffhandle = timeout(fd_turnoff, (caddr_t)fdu, 4 * hz);
1577 case FINDWORK: /* we have found new work */
1582 outb(fdc->baseport+FDCTL, fd->ft->trans);
1583 TRACE1("[0x%x->FDCTL]", fd->ft->trans);
1584 /*******************************************************\
1585 * If the next drive has a motor startup pending, then *
1586 * it will start up in its own good time *
1587 \*******************************************************/
1588 if(fd->flags & FD_MOTOR_WAIT)
1590 fdc->state = MOTORWAIT;
1591 return(0); /* come back later */
1593 /*******************************************************\
1594 * Maybe if it's not starting, it SHOULD be starting *
1595 \*******************************************************/
1596 if (!(fd->flags & FD_MOTOR))
1598 fdc->state = MOTORWAIT;
1602 else /* at least make sure we are selected */
1604 set_motor(fdcu, fd->fdsu, TURNON);
1606 if (fdc->flags & FDC_NEEDS_RESET) {
1607 fdc->state = RESETCTLR;
1608 fdc->flags &= ~FDC_NEEDS_RESET;
1610 fdc->state = DOSEEK;
1613 if (b_cylinder == (unsigned)fd->track)
1615 fdc->state = SEEKCOMPLETE;
1618 if (fd_cmd(fdcu, 3, NE7CMD_SEEK,
1619 fd->fdsu, b_cylinder * fd->ft->steptrac,
1623 * seek command not accepted, looks like
1624 * the FDC went off to the Saints...
1626 fdc->retry = 6; /* try a reset */
1627 return(retrier(fdcu));
1629 fd->track = FD_NO_TRACK;
1630 fdc->state = SEEKWAIT;
1631 return(0); /* will return later */
1633 /* allow heads to settle */
1634 timeout(fd_pseudointr, (caddr_t)fdcu, hz / 16);
1635 fdc->state = SEEKCOMPLETE;
1636 return(0); /* will return later */
1637 case SEEKCOMPLETE : /* SEEK DONE, START DMA */
1638 /* Make sure seek really happened*/
1639 if(fd->track == FD_NO_TRACK)
1641 int descyl = b_cylinder * fd->ft->steptrac;
1644 * This might be a "ready changed" interrupt,
1645 * which cannot really happen since the
1646 * RDY pin is hardwired to + 5 volts. This
1647 * generally indicates a "bouncing" intr
1648 * line, so do one of the following:
1650 * When running on an enhanced FDC that is
1651 * known to not go stuck after responding
1652 * with INVALID, fetch all interrupt states
1653 * until seeing either an INVALID or a
1654 * real interrupt condition.
1656 * When running on a dumb old NE765, give
1657 * up immediately. The controller will
1658 * provide up to four dummy RC interrupt
1659 * conditions right after reset (for the
1660 * corresponding four drives), so this is
1661 * our only chance to get notice that it
1662 * was not the FDC that caused the interrupt.
1664 if (fd_sense_int(fdc, &st0, &cyl)
1667 if(fdc->fdct == FDC_NE765
1668 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC)
1669 return 0; /* hope for a real intr */
1670 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
1676 * seek to cyl 0 requested; make sure we are
1679 if (fd_sense_drive_status(fdc, &st3))
1681 if ((st3 & NE7_ST3_T0) == 0) {
1683 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n",
1684 fdu, st3, NE7_ST3BITS);
1692 return(retrier(fdcu));
1699 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n",
1700 fdu, descyl, cyl, st0);
1703 return(retrier(fdcu));
1707 fd->track = b_cylinder;
1709 if (!(fdc->flags & FDC_PCMCIA))
1711 isa_dmastart(bp->b_flags, bp->b_data+fd->skip,
1712 format ? bp->b_bcount : fdblk, fdc->dmachan);
1713 sectrac = fd->ft->sectrac;
1714 sec = blknum % (sectrac * fd->ft->heads);
1715 head = sec / sectrac;
1716 sec = sec % sectrac + 1;
1717 fd->hddrv = ((head&1)<<2)+fdu;
1721 /* make sure the drive is writable */
1722 if(fd_sense_drive_status(fdc, &st3) != 0)
1724 /* stuck controller? */
1725 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
1726 format ? bp->b_bcount : fdblk,
1728 fdc->retry = 6; /* reset the beast */
1729 return(retrier(fdcu));
1731 if(st3 & NE7_ST3_WP)
1734 * XXX YES! this is ugly.
1735 * in order to force the current operation
1736 * to fail, we will have to fake an FDC
1737 * error - all error handling is done
1740 fdc->status[0] = NE7_ST0_IC_AT;
1741 fdc->status[1] = NE7_ST1_NW;
1743 fdc->status[3] = fd->track;
1744 fdc->status[4] = head;
1745 fdc->status[5] = sec;
1746 fdc->retry = 8; /* break out immediately */
1747 fdc->state = IOTIMEDOUT; /* not really... */
1755 if (fdc->flags & FDC_PCMCIA)
1756 (void)fdcpio(fdcu,bp->b_flags,
1757 bp->b_data+fd->skip,
1764 finfo->fd_formb_secshift,
1765 finfo->fd_formb_nsecs,
1766 finfo->fd_formb_gaplen,
1767 finfo->fd_formb_fillbyte,
1770 /* controller fell over */
1771 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
1772 format ? bp->b_bcount : fdblk,
1775 return(retrier(fdcu));
1781 if (fdc->flags & FDC_PCMCIA) {
1783 * this seems to be necessary even when
1786 SET_BCDR(1,fdblk,fdc->baseport);
1789 * perform the write pseudo-DMA before
1790 * the WRITE command is sent
1793 (void)fdcpio(fdcu,bp->b_flags,
1794 bp->b_data+fd->skip,
1799 (read ? NE7CMD_READ : NE7CMD_WRITE),
1800 head << 2 | fdu, /* head & unit */
1801 fd->track, /* track */
1803 sec, /* sector + 1 */
1804 fd->ft->secsize, /* sector size */
1805 sectrac, /* sectors/track */
1806 fd->ft->gap, /* gap size */
1807 fd->ft->datalen, /* data length */
1810 /* the beast is sleeping again */
1811 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
1812 format ? bp->b_bcount : fdblk,
1815 return(retrier(fdcu));
1819 if (fdc->flags & FDC_PCMCIA)
1821 * if this is a read, then simply await interrupt
1822 * before performing PIO
1824 if (read && !fdcpio(fdcu,bp->b_flags,
1825 bp->b_data+fd->skip,fdblk)) {
1826 fd->tohandle = timeout(fd_iotimeout,
1828 return(0); /* will return later */
1832 * write (or format) operation will fall through and
1833 * await completion interrupt
1836 fdc->state = IOCOMPLETE;
1837 fd->tohandle = timeout(fd_iotimeout, (caddr_t)fdcu, hz);
1838 return(0); /* will return later */
1842 * actually perform the PIO read. The IOCOMPLETE case
1843 * removes the timeout for us.
1845 (void)fdcpio(fdcu,bp->b_flags,bp->b_data+fd->skip,fdblk);
1846 fdc->state = IOCOMPLETE;
1849 case IOCOMPLETE: /* IO DONE, post-analyze */
1850 untimeout(fd_iotimeout, (caddr_t)fdcu, fd->tohandle);
1852 if (fd_read_status(fdc, fd->fdsu))
1854 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
1855 format ? bp->b_bcount : fdblk,
1858 fdc->retry = 6; /* force a reset */
1859 return retrier(fdcu);
1862 fdc->state = IOTIMEDOUT;
1868 if (!(fdc->flags & FDC_PCMCIA))
1870 isa_dmadone(bp->b_flags, bp->b_data + fd->skip,
1871 format ? bp->b_bcount : fdblk, fdc->dmachan);
1872 if (fdc->status[0] & NE7_ST0_IC)
1874 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
1875 && fdc->status[1] & NE7_ST1_OR) {
1877 * DMA overrun. Someone hogged the bus
1878 * and didn't release it in time for the
1879 * next FDC transfer.
1880 * Just restart it, don't increment retry
1883 fdc->state = SEEKCOMPLETE;
1886 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV
1888 fdc->retry = 6; /* force a reset */
1889 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
1890 && fdc->status[2] & NE7_ST2_WC
1892 fdc->retry = 3; /* force recalibrate */
1893 return(retrier(fdcu));
1897 if (!format && fd->skip < bp->b_bcount - bp->b_resid)
1899 /* set up next transfer */
1900 fdc->state = DOSEEK;
1906 bufq_remove(&fdc->head, bp);
1907 /* Tell devstat we have finished with the transaction */
1908 devstat_end_transaction(&fd->device_stats,
1909 bp->b_bcount - bp->b_resid,
1911 (bp->b_flags & B_READ) ?
1912 DEVSTAT_READ : DEVSTAT_WRITE);
1916 fdc->state = FINDWORK;
1922 fdc->state = RESETCOMPLETE;
1926 * Discard all the results from the reset so that they
1927 * can't cause an unexpected interrupt later.
1929 for (i = 0; i < 4; i++)
1930 (void)fd_sense_int(fdc, &st0, &cyl);
1931 fdc->state = STARTRECAL;
1935 2, NE7CMD_RECAL, fdu,
1936 0)) /* Recalibrate Function */
1940 return(retrier(fdcu));
1942 fdc->state = RECALWAIT;
1943 return(0); /* will return later */
1945 /* allow heads to settle */
1946 timeout(fd_pseudointr, (caddr_t)fdcu, hz / 8);
1947 fdc->state = RECALCOMPLETE;
1948 return(0); /* will return later */
1952 * See SEEKCOMPLETE for a comment on this:
1954 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID)
1956 if(fdc->fdct == FDC_NE765
1957 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC)
1958 return 0; /* hope for a real intr */
1959 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
1960 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0)
1964 * a recalibrate from beyond cylinder 77
1965 * will "fail" due to the FDC limitations;
1966 * since people used to complain much about
1967 * the failure message, try not logging
1968 * this one if it seems to be the first
1971 printf("fd%d: recal failed ST0 %b cyl %d\n",
1972 fdu, st0, NE7_ST0BITS, cyl);
1973 if(fdc->retry < 3) fdc->retry = 3;
1974 return(retrier(fdcu));
1977 /* Seek (probably) necessary */
1978 fdc->state = DOSEEK;
1979 return(1); /* will return immediatly */
1981 if(fd->flags & FD_MOTOR_WAIT)
1983 return(0); /* time's not up yet */
1985 if (fdc->flags & FDC_NEEDS_RESET) {
1986 fdc->state = RESETCTLR;
1987 fdc->flags &= ~FDC_NEEDS_RESET;
1990 * If all motors were off, then the controller was
1991 * reset, so it has lost track of the current
1992 * cylinder. Recalibrate to handle this case.
1994 fdc->state = STARTRECAL;
1996 return(1); /* will return immediatly */
1998 printf("fdc%d: Unexpected FD int->", fdcu);
1999 if (fd_read_status(fdc, fd->fdsu) == 0)
2000 printf("FDC status :%x %x %x %x %x %x %x ",
2009 printf("No status available ");
2010 if (fd_sense_int(fdc, &st0, &cyl) != 0)
2012 printf("[controller is dead now]\n");
2015 printf("ST0 = %x, PCN = %x\n", st0, cyl);
2018 /*XXX confusing: some branches return immediately, others end up here*/
2019 return(1); /* Come back immediatly to new state */
2026 fdc_p fdc = fdc_data + fdcu;
2027 register struct buf *bp;
2029 bp = bufq_first(&fdc->head);
2031 if(fd_data[FDUNIT(minor(bp->b_dev))].options & FDOPT_NORETRY)
2035 case 0: case 1: case 2:
2036 fdc->state = SEEKCOMPLETE;
2038 case 3: case 4: case 5:
2039 fdc->state = STARTRECAL;
2042 fdc->state = RESETCTLR;
2049 dev_t sav_b_dev = bp->b_dev;
2051 bp->b_dev = makedev(major(bp->b_dev),
2052 (FDUNIT(minor(bp->b_dev))<<3)|RAW_PART);
2053 diskerr(bp, "fd", "hard error", LOG_PRINTF,
2054 fdc->fd->skip / DEV_BSIZE,
2055 (struct disklabel *)NULL);
2056 bp->b_dev = sav_b_dev;
2057 if (fdc->flags & FDC_STAT_VALID)
2060 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n",
2061 fdc->status[0], NE7_ST0BITS,
2062 fdc->status[1], NE7_ST1BITS,
2063 fdc->status[2], NE7_ST2BITS,
2064 fdc->status[3], fdc->status[4],
2068 printf(" (No status)\n");
2070 bp->b_flags |= B_ERROR;
2072 bp->b_resid += bp->b_bcount - fdc->fd->skip;
2073 bufq_remove(&fdc->head, bp);
2075 /* Tell devstat we have finished with the transaction */
2076 devstat_end_transaction(&fdc->fd->device_stats,
2077 bp->b_bcount - bp->b_resid,
2079 (bp->b_flags & B_READ) ? DEVSTAT_READ :
2083 fdc->state = FINDWORK;
2084 fdc->flags |= FDC_NEEDS_RESET;
2094 fdformat(dev, finfo, p)
2096 struct fd_formb *finfo;
2106 fdu = FDUNIT(minor(dev));
2108 fdblk = 128 << fd->ft->secsize;
2110 /* set up a buffer header for fdstrategy() */
2111 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT);
2115 * keep the process from being swapped
2117 p->p_flag |= P_PHYSIO;
2118 bzero((void *)bp, sizeof(struct buf));
2119 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT;
2123 * calculate a fake blkno, so fdstrategy() would initiate a
2124 * seek to the requested cylinder
2126 bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads)
2127 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE;
2129 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs;
2130 bp->b_data = (caddr_t)finfo;
2132 /* now do the format */
2136 /* ...and wait for it to complete */
2138 while(!(bp->b_flags & B_DONE))
2140 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz);
2141 if(rv == EWOULDBLOCK)
2146 if(rv == EWOULDBLOCK) {
2151 if(bp->b_flags & B_ERROR)
2154 * allow the process to be swapped
2156 p->p_flag &= ~P_PHYSIO;
2162 * TODO: don't allocate buffer on stack.
2166 fdioctl(dev, cmd, addr, flag, p)
2173 fdu_t fdu = FDUNIT(minor(dev));
2174 fd_p fd = &fd_data[fdu];
2177 struct fd_type *fdt;
2178 struct disklabel *dl;
2179 char buffer[DEV_BSIZE];
2182 fdblk = 128 << fd->ft->secsize;
2187 bzero(buffer, sizeof (buffer));
2188 dl = (struct disklabel *)buffer;
2189 dl->d_secsize = fdblk;
2190 fdt = fd_data[FDUNIT(minor(dev))].ft;
2191 dl->d_secpercyl = fdt->size / fdt->tracks;
2192 dl->d_type = DTYPE_FLOPPY;
2194 if (readdisklabel(dkmodpart(dev, RAW_PART), fdstrategy, dl)
2200 *(struct disklabel *)addr = *dl;
2204 if ((flag & FWRITE) == 0)
2209 if ((flag & FWRITE) == 0)
2214 if ((flag & FWRITE) == 0)
2220 dl = (struct disklabel *)addr;
2222 if ((error = setdisklabel((struct disklabel *)buffer, dl,
2226 error = writedisklabel(dev, fdstrategy,
2227 (struct disklabel *)buffer);
2230 if((flag & FWRITE) == 0)
2231 error = EBADF; /* must be opened for writing */
2232 else if(((struct fd_formb *)addr)->format_version !=
2234 error = EINVAL; /* wrong version of formatting prog */
2236 error = fdformat(dev, (struct fd_formb *)addr, p);
2239 case FD_GTYPE: /* get drive type */
2240 *(struct fd_type *)addr = *fd->ft;
2243 case FD_STYPE: /* set drive type */
2244 /* this is considered harmful; only allow for superuser */
2245 if(suser(p->p_ucred, &p->p_acflag) != 0)
2247 *fd->ft = *(struct fd_type *)addr;
2250 case FD_GOPTS: /* get drive options */
2251 *(int *)addr = fd->options;
2254 case FD_SOPTS: /* set drive options */
2255 fd->options = *(int *)addr;
2266 static fd_devsw_installed = 0;
2268 static void fd_drvinit(void *notused )
2271 if( ! fd_devsw_installed ) {
2272 cdevsw_add_generic(BDEV_MAJOR,CDEV_MAJOR, &fd_cdevsw);
2273 fd_devsw_installed = 1;
2277 SYSINIT(fddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,fd_drvinit,NULL)
2283 * Hello emacs, these are the
2286 * c-continued-statement-offset: 8
2287 * c-continued-brace-offset: 0
2288 * c-brace-offset: -8
2289 * c-brace-imaginary-offset: 0
2290 * c-argdecl-indent: 8
2291 * c-label-offset: -8
2292 * c++-hanging-braces: 1
2293 * c++-access-specifier-offset: -8
2294 * c++-empty-arglist-indent: 8
2295 * c++-friend-offset: 0