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 * Copyright (c) 2001 Joerg Wunsch,
22 * joerg_wunsch@uriah.sax.de (Joerg Wunsch)
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. All advertising materials mentioning features or use of this software
33 * must display the following acknowledgement:
34 * This product includes software developed by the University of
35 * California, Berkeley and its contributors.
36 * 4. Neither the name of the University nor the names of its contributors
37 * may be used to endorse or promote products derived from this software
38 * without specific prior written permission.
40 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91
53 * $FreeBSD: src/sys/isa/fd.c,v 1.176.2.8 2002/05/15 21:56:14 joerg Exp $
59 #include <sys/param.h>
60 #include <sys/systm.h>
61 #include <sys/kernel.h>
65 #include <sys/diskslice.h>
67 #include <sys/devicestat.h>
68 #include <sys/fcntl.h>
69 #include <sys/malloc.h>
70 #include <sys/module.h>
73 #include <sys/syslog.h>
74 #include <sys/device.h>
77 #include <sys/thread2.h>
79 #include <machine/clock.h>
80 #include <machine/inttypes.h>
81 #include <machine/ioctl_fd.h>
82 #include <machine/stdarg.h>
84 #include <bus/isa/isavar.h>
85 #include <bus/isa/isareg.h>
88 #include <bus/isa/rtc.h>
90 /* configuration flags */
91 #define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */
92 #define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */
94 /* internally used only, not really from CMOS: */
95 #define RTCFDT_144M_PRETENDED 0x1000
97 /* error returns for fd_cmd() */
99 #define FD_NOT_VALID -2
100 #define FDC_ERRMAX 100 /* do not log more */
102 * Stop retrying after this many DMA overruns. Since each retry takes
103 * one revolution, with 300 rpm., 25 retries take approximately 10
104 * seconds which the read attempt will block in case the DMA overrun
107 #define FDC_DMAOV_MAX 25
110 * Timeout value for the PIO loops to wait until the FDC main status
111 * register matches our expectations (request for master, direction
112 * bit). This is supposed to be a number of microseconds, although
113 * timing might actually not be very accurate.
115 * Timeouts of 100 msec are believed to be required for some broken
118 #define FDSTS_TIMEOUT 100000
121 #define NUMDENS (NUMTYPES - 7)
123 /* These defines (-1) must match index for fd_types */
124 #define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */
125 #define NO_TYPE 0 /* must match NO_TYPE in ft.c */
137 #define FD_1480in5_25 11
138 #define FD_1440in5_25 12
139 #define FD_820in5_25 13
140 #define FD_800in5_25 14
141 #define FD_720in5_25 15
142 #define FD_360in5_25 16
143 #define FD_640in5_25 17
146 static struct fd_type fd_types
[NUMTYPES
] =
148 { 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS
,2,0x0C,2 }, /* 1.72M in HD 3.5in */
149 { 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS
,2,0x6C,1 }, /* 1.48M in HD 3.5in */
150 { 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS
,2,0x6C,1 }, /* 1.44M in HD 3.5in */
151 { 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS
,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */
152 { 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS
,2,0x2E,1 }, /* 820K in HD 3.5in */
153 { 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS
,2,0x2E,1 }, /* 800K in HD 3.5in */
154 { 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS
,2,0x50,1 }, /* 720K in HD 3.5in */
155 { 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS
,2,0x50,1 }, /* 360K in DD 5.25in */
156 { 8,2,0xFF,0x2A,80,1280,1,FDC_250KBPS
,2,0x50,1 }, /* 640K in DD 5.25in */
157 { 8,3,0xFF,0x35,77,1232,1,FDC_500KBPS
,2,0x74,1 }, /* 1.23M in HD 5.25in */
159 { 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS
,2,0x02,2 }, /* 1.48M in HD 5.25in */
160 { 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS
,2,0x02,2 }, /* 1.44M in HD 5.25in */
161 { 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS
,2,0x2E,1 }, /* 820K in HD 5.25in */
162 { 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS
,2,0x2E,1 }, /* 800K in HD 5.25in */
163 { 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS
,2,0x50,1 }, /* 720K in HD 5.25in */
164 { 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS
,2,0x50,1 }, /* 360K in HD 5.25in */
165 { 8,2,0xFF,0x2A,80,1280,1,FDC_300KBPS
,2,0x50,1 }, /* 640K in HD 5.25in */
168 #define DRVS_PER_CTLR 2 /* 2 floppies */
170 /***********************************************************************\
171 * Per controller structure. *
172 \***********************************************************************/
173 devclass_t fdc_devclass
;
175 /***********************************************************************\
176 * Per drive structure. *
177 * N per controller (DRVS_PER_CTLR) *
178 \***********************************************************************/
180 struct fdc_data
*fdc
; /* pointer to controller structure */
181 int fdsu
; /* this units number on this controller */
182 int type
; /* Drive type (FD_1440...) */
183 struct fd_type ft
; /* the type descriptor */
185 #define FD_OPEN 0x01 /* it's open */
186 #define FD_ACTIVE 0x02 /* it's active */
187 #define FD_MOTOR 0x04 /* motor should be on */
188 #define FD_MOTOR_WAIT 0x08 /* motor coming up */
191 #define FD_NO_TRACK -2
192 int track
; /* where we think the head is */
193 int options
; /* user configurable options, see ioctl_fd.h */
194 struct callout toffhandle
;
195 struct callout tohandle
;
196 struct callout motor
;
198 struct devstat device_stats
;
206 static devclass_t fd_devclass
;
208 /***********************************************************************\
209 * Throughout this file the following conventions will be used: *
210 * fd is a pointer to the fd_data struct for the drive in question *
211 * fdc is a pointer to the fdc_data struct for the controller *
212 * fdu is the floppy drive unit number *
213 * fdcu is the floppy controller unit number *
214 * fdsu is the floppy drive unit number on that controller. (sub-unit) *
215 \***********************************************************************/
217 /* internal functions */
218 static void fdc_intr(void *);
219 static void set_motor(struct fdc_data
*, int, int);
222 static timeout_t fd_turnoff
;
223 static timeout_t fd_motor_on
;
224 static void fd_turnon(struct fd_data
*);
225 static void fdc_reset(fdc_p
);
226 static int fd_in(struct fdc_data
*, int *);
227 static int out_fdc(struct fdc_data
*, int);
228 static void fdstart(struct fdc_data
*);
229 static timeout_t fd_iotimeout
;
230 static timeout_t fd_pseudointr
;
231 static int fdstate(struct fdc_data
*);
232 static int retrier(struct fdc_data
*);
233 static int fdformat(cdev_t
, struct fd_formb
*, struct ucred
*);
235 static int enable_fifo(fdc_p fdc
);
237 static int fifo_threshold
= 8; /* XXX: should be accessible via sysctl */
243 #define SEEKCOMPLETE 3
245 #define RECALCOMPLETE 5
251 #define IOTIMEDOUT 11
252 #define RESETCOMPLETE 12
256 static char const * const fdstates
[] =
274 /* CAUTION: fd_debug causes huge amounts of logging output */
275 static int volatile fd_debug
= 0;
276 #define TRACE0(arg) if(fd_debug) kprintf(arg)
277 #define TRACE1(arg1, arg2) if(fd_debug) kprintf(arg1, arg2)
278 #else /* FDC_DEBUG */
280 #define TRACE1(arg1, arg2)
281 #endif /* FDC_DEBUG */
284 fdout_wr(fdc_p fdc
, u_int8_t v
)
286 bus_space_write_1(fdc
->portt
, fdc
->porth
, FDOUT
+fdc
->port_off
, v
);
292 return bus_space_read_1(fdc
->portt
, fdc
->porth
, FDSTS
+fdc
->port_off
);
296 fddata_wr(fdc_p fdc
, u_int8_t v
)
298 bus_space_write_1(fdc
->portt
, fdc
->porth
, FDDATA
+fdc
->port_off
, v
);
304 return bus_space_read_1(fdc
->portt
, fdc
->porth
, FDDATA
+fdc
->port_off
);
308 fdctl_wr_isa(fdc_p fdc
, u_int8_t v
)
310 bus_space_write_1(fdc
->ctlt
, fdc
->ctlh
, 0, v
);
318 return bus_space_read_1(fdc
->portt
, fdc
->porth
, FDIN
);
323 static d_open_t Fdopen
; /* NOTE, not fdopen */
324 static d_close_t fdclose
;
325 static d_ioctl_t fdioctl
;
326 static d_strategy_t fdstrategy
;
328 static struct dev_ops fd_ops
= {
333 .d_write
= physwrite
,
335 .d_strategy
= fdstrategy
,
339 fdc_err(struct fdc_data
*fdc
, const char *s
)
343 if (fdc
->fdc_errs
< FDC_ERRMAX
)
344 device_printf(fdc
->fdc_dev
, "%s", s
);
345 else if (fdc
->fdc_errs
== FDC_ERRMAX
)
346 device_printf(fdc
->fdc_dev
, "too many errors, not "
347 "logging any more\n");
354 * fd_cmd: Send a command to the chip. Takes a varargs with this structure:
356 * # of output bytes, output bytes as ints ...,
357 * # of input bytes, input bytes as ints ...
360 fd_cmd(struct fdc_data
*fdc
, int n_out
, ...)
367 __va_start(ap
, n_out
);
368 cmd
= (u_char
)(__va_arg(ap
, int));
370 __va_start(ap
, n_out
);
371 for (n
= 0; n
< n_out
; n
++)
373 if (out_fdc(fdc
, __va_arg(ap
, int)) < 0)
376 ksnprintf(msg
, sizeof(msg
),
377 "cmd %x failed at out byte %d of %d\n",
379 return fdc_err(fdc
, msg
);
382 n_in
= __va_arg(ap
, int);
383 for (n
= 0; n
< n_in
; n
++)
385 int *ptr
= __va_arg(ap
, int *);
386 if (fd_in(fdc
, ptr
) < 0)
389 ksnprintf(msg
, sizeof(msg
),
390 "cmd %02x failed at in byte %d of %d\n",
392 return fdc_err(fdc
, msg
);
400 enable_fifo(fdc_p fdc
)
404 if ((fdc
->flags
& FDC_HAS_FIFO
) == 0) {
408 * Cannot use fd_cmd the normal way here, since
409 * this might be an invalid command. Thus we send the
410 * first byte, and check for an early turn of data directon.
413 if (out_fdc(fdc
, I8207X_CONFIGURE
) < 0)
414 return fdc_err(fdc
, "Enable FIFO failed\n");
416 /* If command is invalid, return */
418 while ((i
= fdsts_rd(fdc
) & (NE7_DIO
| NE7_RQM
))
419 != NE7_RQM
&& j
-- > 0) {
420 if (i
== (NE7_DIO
| NE7_RQM
)) {
428 0, (fifo_threshold
- 1) & 0xf, 0, 0) < 0) {
430 return fdc_err(fdc
, "Enable FIFO failed\n");
432 fdc
->flags
|= FDC_HAS_FIFO
;
436 I8207X_CONFIGURE
, 0, (fifo_threshold
- 1) & 0xf, 0, 0) < 0)
437 return fdc_err(fdc
, "Re-enable FIFO failed\n");
442 fd_sense_drive_status(fdc_p fdc
, int *st3p
)
446 if (fd_cmd(fdc
, 2, NE7CMD_SENSED
, fdc
->fdu
, 1, &st3
))
448 return fdc_err(fdc
, "Sense Drive Status failed\n");
457 fd_sense_int(fdc_p fdc
, int *st0p
, int *cylp
)
461 ret
= fd_cmd(fdc
, 1, NE7CMD_SENSEI
, 1, &st0
);
464 "sense intr err reading stat reg 0\n");
471 if ((st0
& NE7_ST0_IC
) == NE7_ST0_IC_IV
) {
473 * There doesn't seem to have been an interrupt.
478 if (fd_in(fdc
, &cyl
) < 0) {
479 return fdc_err(fdc
, "can't get cyl num\n");
490 fd_read_status(fdc_p fdc
, int fdsu
)
494 for (i
= 0; i
< 7; i
++) {
496 * XXX types are poorly chosen. Only bytes can by read
497 * from the hardware, but fdc->status[] wants u_ints and
498 * fd_in() gives ints.
502 ret
= fd_in(fdc
, &status
);
503 fdc
->status
[i
] = status
;
509 fdc
->flags
|= FDC_STAT_VALID
;
511 fdc
->flags
&= ~FDC_STAT_VALID
;
516 /****************************************************************************/
517 /* autoconfiguration stuff */
518 /****************************************************************************/
521 fdc_alloc_resources(struct fdc_data
*fdc
)
527 ispnp
= (fdc
->flags
& FDC_ISPNP
) != 0;
528 ispcmcia
= (fdc
->flags
& FDC_ISPCMCIA
) != 0;
529 fdc
->rid_ioport
= fdc
->rid_irq
= fdc
->rid_drq
= 0;
530 fdc
->res_ioport
= fdc
->res_irq
= fdc
->res_drq
= 0;
533 * On standard ISA, we don't just use an 8 port range
534 * (e.g. 0x3f0-0x3f7) since that covers an IDE control
537 * Isn't PC hardware wonderful.
539 * The Y-E Data PCMCIA FDC doesn't have this problem, it
540 * uses the register with offset 6 for pseudo-DMA, and the
541 * one with offset 7 as control register.
543 fdc
->res_ioport
= bus_alloc_resource(dev
, SYS_RES_IOPORT
,
544 &fdc
->rid_ioport
, 0ul, ~0ul,
545 ispcmcia
? 8 : (ispnp
? 1 : 6),
547 if (fdc
->res_ioport
== 0) {
548 device_printf(dev
, "cannot reserve I/O port range\n");
551 fdc
->portt
= rman_get_bustag(fdc
->res_ioport
);
552 fdc
->porth
= rman_get_bushandle(fdc
->res_ioport
);
556 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7
557 * and some at 0x3f0-0x3f5,0x3f7. We detect the former
558 * by checking the size and adjust the port address
561 if (bus_get_resource_count(dev
, SYS_RES_IOPORT
, 0) == 4)
565 * Register the control port range as rid 1 if it
566 * isn't there already. Most PnP BIOSen will have
567 * already done this but non-PnP configurations don't.
569 * And some (!!) report 0x3f2-0x3f5 and completely
570 * leave out the control register! It seems that some
571 * non-antique controller chips have a different
572 * method of programming the transfer speed which
573 * doesn't require the control register, but it's
574 * mighty bogus as the chip still responds to the
575 * address for the control register.
577 if (bus_get_resource_count(dev
, SYS_RES_IOPORT
, 1) == 0) {
580 /* Find the control port, usually 0x3f7 */
581 ctlstart
= rman_get_start(fdc
->res_ioport
) +
584 bus_set_resource(dev
, SYS_RES_IOPORT
, 1, ctlstart
, 1,
589 * Now (finally!) allocate the control port.
592 fdc
->res_ctl
= bus_alloc_resource(dev
, SYS_RES_IOPORT
,
594 0ul, ~0ul, 1, RF_ACTIVE
);
595 if (fdc
->res_ctl
== 0) {
597 "cannot reserve control I/O port range\n");
600 fdc
->ctlt
= rman_get_bustag(fdc
->res_ctl
);
601 fdc
->ctlh
= rman_get_bushandle(fdc
->res_ctl
);
604 fdc
->res_irq
= bus_alloc_resource(dev
, SYS_RES_IRQ
,
605 &fdc
->rid_irq
, 0ul, ~0ul, 1,
607 if (fdc
->res_irq
== 0) {
608 device_printf(dev
, "cannot reserve interrupt line\n");
612 if ((fdc
->flags
& FDC_NODMA
) == 0) {
613 fdc
->res_drq
= bus_alloc_resource(dev
, SYS_RES_DRQ
,
614 &fdc
->rid_drq
, 0ul, ~0ul, 1,
616 if (fdc
->res_drq
== 0) {
617 device_printf(dev
, "cannot reserve DMA request line\n");
620 fdc
->dmachan
= fdc
->res_drq
->r_start
;
627 fdc_release_resources(struct fdc_data
*fdc
)
632 if (fdc
->res_irq
!= 0) {
633 bus_deactivate_resource(dev
, SYS_RES_IRQ
, fdc
->rid_irq
,
635 bus_release_resource(dev
, SYS_RES_IRQ
, fdc
->rid_irq
,
638 if (fdc
->res_ctl
!= 0) {
639 bus_deactivate_resource(dev
, SYS_RES_IOPORT
, fdc
->rid_ctl
,
641 bus_release_resource(dev
, SYS_RES_IOPORT
, fdc
->rid_ctl
,
644 if (fdc
->res_ioport
!= 0) {
645 bus_deactivate_resource(dev
, SYS_RES_IOPORT
, fdc
->rid_ioport
,
647 bus_release_resource(dev
, SYS_RES_IOPORT
, fdc
->rid_ioport
,
650 if (fdc
->res_drq
!= 0) {
651 bus_deactivate_resource(dev
, SYS_RES_DRQ
, fdc
->rid_drq
,
653 bus_release_resource(dev
, SYS_RES_DRQ
, fdc
->rid_drq
,
658 /****************************************************************************/
659 /* autoconfiguration stuff */
660 /****************************************************************************/
662 static struct isa_pnp_id fdc_ids
[] = {
663 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */
664 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */
669 fdc_read_ivar(device_t dev
, device_t child
, int which
, u_long
*result
)
671 struct fdc_ivars
*ivars
= device_get_ivars(child
);
674 case FDC_IVAR_FDUNIT
:
675 *result
= ivars
->fdunit
;
684 * fdc controller section.
687 fdc_probe(device_t dev
)
690 struct fdc_data
*fdc
;
692 fdc
= device_get_softc(dev
);
693 bzero(fdc
, sizeof *fdc
);
695 fdc
->fdctl_wr
= fdctl_wr_isa
;
698 error
= ISA_PNP_PROBE(device_get_parent(dev
), dev
, fdc_ids
);
702 fdc
->flags
|= FDC_ISPNP
;
704 /* Attempt to allocate our resources for the duration of the probe */
705 error
= fdc_alloc_resources(fdc
);
709 /* First - lets reset the floppy controller */
712 fdout_wr(fdc
, FDO_FRST
);
714 /* see if it can handle a command */
715 if (fd_cmd(fdc
, 3, NE7CMD_SPECIFY
, NE7_SPEC_1(3, 240),
716 NE7_SPEC_2(2, 0), 0)) {
721 if (fd_cmd(fdc
, 1, NE7CMD_VERSION
, 1, &ic_type
) == 0) {
722 ic_type
= (u_char
)ic_type
;
725 device_set_desc(dev
, "NEC 765 or clone");
726 fdc
->fdct
= FDC_NE765
;
729 device_set_desc(dev
, "Intel 82077 or clone");
730 fdc
->fdct
= FDC_I82077
;
733 device_set_desc(dev
, "NEC 72065B or clone");
734 fdc
->fdct
= FDC_NE72065
;
737 device_set_desc(dev
, "generic floppy controller");
738 fdc
->fdct
= FDC_UNKNOWN
;
744 fdc_release_resources(fdc
);
749 * Add a child device to the fdc controller. It will then be probed etc.
752 fdc_add_child(device_t dev
, const char *name
, int unit
)
755 struct fdc_ivars
*ivar
;
758 ivar
= kmalloc(sizeof *ivar
, M_DEVBUF
/* XXX */, M_WAITOK
| M_ZERO
);
759 if (resource_int_value(name
, unit
, "drive", &ivar
->fdunit
) != 0)
761 child
= device_add_child(dev
, name
, unit
);
764 device_set_ivars(child
, ivar
);
765 if (resource_int_value(name
, unit
, "disabled", &disabled
) == 0
767 device_disable(child
);
771 fdc_attach(device_t dev
)
773 struct fdc_data
*fdc
;
776 fdc
= device_get_softc(dev
);
778 callout_init(&fdc
->pseudointr_ch
);
780 error
= fdc_alloc_resources(fdc
);
782 device_printf(dev
, "cannot reacquire resources\n");
785 error
= BUS_SETUP_INTR(device_get_parent(dev
), dev
, fdc
->res_irq
,
787 &fdc
->fdc_intr
, NULL
, NULL
);
789 device_printf(dev
, "cannot setup interrupt\n");
792 fdc
->fdcu
= device_get_unit(dev
);
793 fdc
->flags
|= FDC_ATTACHED
;
795 if ((fdc
->flags
& FDC_NODMA
) == 0) {
796 /* Acquire the DMA channel forever, The driver will do the rest */
797 /* XXX should integrate with rman */
798 error
= isa_dma_acquire(fdc
->dmachan
);
800 error
= isa_dma_init(fdc
->dmachan
, 128 << 3 /* XXX max secsize */,
803 isa_dma_release(fdc
->dmachan
);
804 device_printf(dev
, "disabling dma\n");
805 fdc
->flags
|= FDC_NODMA
;
809 fdc
->state
= DEVIDLE
;
811 /* reset controller, turn motor off, clear fdout mirror reg */
812 fdout_wr(fdc
, ((fdc
->fdout
= 0)));
813 bioq_init(&fdc
->bio_queue
);
816 * Probe and attach any children. We should probably detect
817 * devices from the BIOS unless overridden.
819 for (i
= resource_query_string(-1, "at", device_get_nameunit(dev
));
821 i
= resource_query_string(i
, "at", device_get_nameunit(dev
)))
822 fdc_add_child(dev
, resource_query_name(i
),
823 resource_query_unit(i
));
825 return (bus_generic_attach(dev
));
829 fdc_print_child(device_t me
, device_t child
)
833 retval
+= bus_print_child_header(me
, child
);
834 retval
+= kprintf(" on %s drive %d\n", device_get_nameunit(me
),
835 fdc_get_fdunit(child
));
840 static device_method_t fdc_methods
[] = {
841 /* Device interface */
842 DEVMETHOD(device_probe
, fdc_probe
),
843 DEVMETHOD(device_attach
, fdc_attach
),
844 DEVMETHOD(device_detach
, bus_generic_detach
),
845 DEVMETHOD(device_shutdown
, bus_generic_shutdown
),
846 DEVMETHOD(device_suspend
, bus_generic_suspend
),
847 DEVMETHOD(device_resume
, bus_generic_resume
),
850 DEVMETHOD(bus_print_child
, fdc_print_child
),
851 DEVMETHOD(bus_read_ivar
, fdc_read_ivar
),
852 /* Our children never use any other bus interface methods. */
857 static driver_t fdc_driver
= {
860 sizeof(struct fdc_data
)
863 DRIVER_MODULE(fdc
, isa
, fdc_driver
, fdc_devclass
, NULL
, NULL
);
865 DRIVER_MODULE(fdc
, acpi
, fdc_driver
, fdc_devclass
, NULL
, NULL
);
868 /******************************************************************/
870 * devices attached to the controller section.
873 fd_probe(device_t dev
)
878 struct fdc_data
*fdc
;
880 static int fd_fifo
= 0;
882 fdsu
= *(int *)device_get_ivars(dev
); /* xxx cheat a bit... */
883 fd
= device_get_softc(dev
);
884 fdc
= device_get_softc(device_get_parent(dev
));
886 bzero(fd
, sizeof *fd
);
890 fd
->fdu
= device_get_unit(dev
);
893 /* look up what bios thinks we have */
896 if ((fdc
->flags
& FDC_ISPCMCIA
))
898 else if (device_get_flags(fdc
->fdc_dev
) & FDC_PRETEND_D0
)
899 fdt
= RTCFDT_144M
| RTCFDT_144M_PRETENDED
;
901 fdt
= (rtcin(RTC_FDISKETTE
) & 0xf0);
904 fdt
= ((rtcin(RTC_FDISKETTE
) << 4) & 0xf0);
911 fdt
= RTCFDT_144M
; /* XXX probably */
914 /* is there a unit? */
915 if (fdt
== RTCFDT_NONE
)
919 set_motor(fdc
, fdsu
, TURNON
);
920 DELAY(1000000); /* 1 sec */
922 /* XXX This doesn't work before the first set_motor() */
923 if (fd_fifo
== 0 && fdc
->fdct
!= FDC_NE765
&& fdc
->fdct
!= FDC_UNKNOWN
924 && (device_get_flags(fdc
->fdc_dev
) & FDC_NO_FIFO
) == 0
925 && enable_fifo(fdc
) == 0) {
926 device_printf(device_get_parent(dev
),
927 "FIFO enabled, %d bytes threshold\n", fifo_threshold
);
931 if ((fd_cmd(fdc
, 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 fd_cmd(fdc
, 3, NE7CMD_SEEK
, fdsu
, 10, 0);
936 DELAY(300000); /* ...wait a moment... */
937 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(fdc
, 3, NE7CMD_SEEK
, fdsu
, 10, 0) == 0) {
944 /* ...wait a moment... */
946 /* make ctrlr happy: */
947 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(fdc
, 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(fdc
, fdsu
, TURNOFF
);
972 if (st0
& NE7_ST0_EC
) /* no track 0 -> no drive present */
975 fd
->track
= FD_NO_TRACK
;
979 callout_init(&fd
->toffhandle
);
980 callout_init(&fd
->tohandle
);
981 callout_init(&fd
->motor
);
985 device_set_desc(dev
, "1200-KB 5.25\" drive");
988 case RTCFDT_144M
| RTCFDT_144M_PRETENDED
:
989 device_set_desc(dev
, "config-pretended 1440-MB 3.5\" drive");
993 device_set_desc(dev
, "1440-KB 3.5\" drive");
998 device_set_desc(dev
, "2880-KB 3.5\" drive (in 1440-KB mode)");
1002 device_set_desc(dev
, "360-KB 5.25\" drive");
1006 kprintf("720-KB 3.5\" drive");
1012 fd
->ft
= fd_types
[fd
->type
- 1];
1017 fd_attach(device_t dev
)
1019 struct disk_info info
;
1023 fd
= device_get_softc(dev
);
1025 disk_create(fd
->fdu
, &fd
->disk
, &fd_ops
);
1026 disk_setdisktype(&fd
->disk
, "floppy");
1029 * Make special raw floppy devices with preset types to
1030 * make formatting easier. These override the disk management
1031 * layer for the whole-slice-disk for partitions 128-191. Note
1032 * that we do not override partition 255, which is the
1033 * whole-slice-part. If we did we would have to provide our
1034 * own DIOCGPART ioctl.
1036 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 1),
1037 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.1720", fd
->fdu
);
1038 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 2),
1039 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.1480", fd
->fdu
);
1040 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 3),
1041 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.1440", fd
->fdu
);
1042 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 4),
1043 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.1200", fd
->fdu
);
1044 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 5),
1045 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.820", fd
->fdu
);
1046 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 6),
1047 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.800", fd
->fdu
);
1048 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 7),
1049 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.720", fd
->fdu
);
1050 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 8),
1051 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.360", fd
->fdu
);
1052 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 9),
1053 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.640", fd
->fdu
);
1054 make_dev(&fd_ops
, dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128 + 10),
1055 UID_ROOT
, GID_WHEEL
, 0600, "fd%d.1232", fd
->fdu
);
1057 devstat_add_entry(&fd
->device_stats
, device_get_name(dev
),
1058 device_get_unit(dev
), 512, DEVSTAT_NO_ORDERED_TAGS
,
1059 DEVSTAT_TYPE_FLOPPY
| DEVSTAT_TYPE_IF_OTHER
,
1060 DEVSTAT_PRIORITY_FD
);
1062 if (fd
->type
!= NO_TYPE
) {
1063 bzero(&info
, sizeof(info
));
1064 ft
= &fd_types
[fd
->type
- 1];
1065 info
.d_media_blksize
= 128 << ft
->secsize
;
1066 info
.d_media_blocks
= ft
->size
;
1067 info
.d_dsflags
= DSO_COMPATPARTA
| DSO_COMPATMBR
;
1068 info
.d_nheads
= ft
->heads
;
1069 info
.d_secpertrack
= ft
->sectrac
;
1070 info
.d_secpercyl
= ft
->sectrac
* ft
->heads
;
1071 info
.d_ncylinders
= ft
->size
/ info
.d_secpercyl
;
1072 disk_setdiskinfo(&fd
->disk
, &info
);
1078 fd_detach(device_t dev
)
1082 fd
= device_get_softc(dev
);
1083 kprintf("devfs: Please make sure that only the right fd device was removed!!!\n");
1084 dev_ops_remove_minor(&fd_ops
,
1085 /*dkunitmask() | dkmakeslice(-1) | dkmakepart(128|64),*/
1086 dkmakeminor(fd
->fdu
, WHOLE_DISK_SLICE
, 128));
1087 disk_invalidate(&fd
->disk
);
1088 disk_destroy(&fd
->disk
);
1089 devstat_remove_entry(&fd
->device_stats
);
1090 callout_stop(&fd
->toffhandle
);
1091 callout_stop(&fd
->motor
);
1096 static device_method_t fd_methods
[] = {
1097 /* Device interface */
1098 DEVMETHOD(device_probe
, fd_probe
),
1099 DEVMETHOD(device_attach
, fd_attach
),
1100 DEVMETHOD(device_detach
, fd_detach
),
1101 DEVMETHOD(device_shutdown
, bus_generic_shutdown
),
1102 DEVMETHOD(device_suspend
, bus_generic_suspend
), /* XXX */
1103 DEVMETHOD(device_resume
, bus_generic_resume
), /* XXX */
1108 static driver_t fd_driver
= {
1111 sizeof(struct fd_data
)
1114 DRIVER_MODULE(fd
, fdc
, fd_driver
, fd_devclass
, NULL
, NULL
);
1116 /****************************************************************************/
1117 /* motor control stuff */
1118 /* remember to not deselect the drive we're working on */
1119 /****************************************************************************/
1121 set_motor(struct fdc_data
*fdc
, int fdsu
, int turnon
)
1123 int fdout
= fdc
->fdout
;
1124 int needspecify
= 0;
1127 fdout
&= ~FDO_FDSEL
;
1128 fdout
|= (FDO_MOEN0
<< fdsu
) + fdsu
;
1130 fdout
&= ~(FDO_MOEN0
<< fdsu
);
1133 && (fdout
& (FDO_MOEN0
+FDO_MOEN1
+FDO_MOEN2
+FDO_MOEN3
)) == 0)
1134 /* gonna turn off the last drive, put FDC to bed */
1135 fdout
&= ~ (FDO_FRST
|FDO_FDMAEN
);
1137 /* make sure controller is selected and specified */
1138 if((fdout
& (FDO_FRST
|FDO_FDMAEN
)) == 0)
1140 fdout
|= (FDO_FRST
|FDO_FDMAEN
);
1143 fdout_wr(fdc
, fdout
);
1145 TRACE1("[0x%x->FDOUT]", fdout
);
1150 * special case: since we have just woken up the FDC
1151 * from its sleep, we silently assume the command will
1152 * be accepted, and do not test for a timeout
1154 (void)fd_cmd(fdc
, 3, NE7CMD_SPECIFY
,
1155 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1157 if (fdc
->flags
& FDC_HAS_FIFO
)
1158 (void) enable_fifo(fdc
);
1163 fd_turnoff(void *xfd
)
1167 TRACE1("[fd%d: turnoff]", fd
->fdu
);
1171 * Don't turn off the motor yet if the drive is active.
1173 * If we got here, this could only mean we missed an interrupt.
1174 * This can e. g. happen on the Y-E Date PCMCIA floppy controller
1175 * after a controller reset. Just schedule a pseudo-interrupt
1176 * so the state machine gets re-entered.
1178 if (fd
->fdc
->state
!= DEVIDLE
&& fd
->fdc
->fdu
== fd
->fdu
) {
1184 fd
->flags
&= ~FD_MOTOR
;
1185 set_motor(fd
->fdc
, fd
->fdsu
, TURNOFF
);
1190 fd_motor_on(void *xfd
)
1195 fd
->flags
&= ~FD_MOTOR_WAIT
;
1196 if((fd
->fdc
->fd
== fd
) && (fd
->fdc
->state
== MOTORWAIT
))
1206 if(!(fd
->flags
& FD_MOTOR
))
1208 fd
->flags
|= (FD_MOTOR
+ FD_MOTOR_WAIT
);
1209 set_motor(fd
->fdc
, fd
->fdsu
, TURNON
);
1210 callout_reset(&fd
->motor
, hz
, fd_motor_on
, fd
);
1215 fdc_reset(fdc_p fdc
)
1217 /* Try a reset, keep motor on */
1218 fdout_wr(fdc
, fdc
->fdout
& ~(FDO_FRST
|FDO_FDMAEN
));
1219 TRACE1("[0x%x->FDOUT]", fdc
->fdout
& ~(FDO_FRST
|FDO_FDMAEN
));
1221 /* enable FDC, but defer interrupts a moment */
1222 fdout_wr(fdc
, fdc
->fdout
& ~FDO_FDMAEN
);
1223 TRACE1("[0x%x->FDOUT]", fdc
->fdout
& ~FDO_FDMAEN
);
1225 fdout_wr(fdc
, fdc
->fdout
);
1226 TRACE1("[0x%x->FDOUT]", fdc
->fdout
);
1228 /* XXX after a reset, silently believe the FDC will accept commands */
1229 (void)fd_cmd(fdc
, 3, NE7CMD_SPECIFY
,
1230 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0),
1232 if (fdc
->flags
& FDC_HAS_FIFO
)
1233 (void) enable_fifo(fdc
);
1236 /****************************************************************************/
1238 /****************************************************************************/
1240 * FDC IO functions, take care of the main status register, timeout
1241 * in case the desired status bits are never set.
1243 * These PIO loops initially start out with short delays between
1244 * each iteration in the expectation that the required condition
1245 * is usually met quickly, so it can be handled immediately. After
1246 * about 1 ms, stepping is increased to achieve a better timing
1247 * accuracy in the calls to DELAY().
1250 fd_in(struct fdc_data
*fdc
, int *ptr
)
1254 for (j
= 0, step
= 1;
1255 (i
= fdsts_rd(fdc
) & (NE7_DIO
|NE7_RQM
)) != (NE7_DIO
|NE7_RQM
) &&
1259 return (fdc_err(fdc
, "ready for output in input\n"));
1264 if (j
>= FDSTS_TIMEOUT
)
1265 return (fdc_err(fdc
, bootverbose
? "input ready timeout\n": 0));
1268 TRACE1("[FDDATA->0x%x]", (unsigned char)i
);
1271 #else /* !FDC_DEBUG */
1276 #endif /* FDC_DEBUG */
1280 out_fdc(struct fdc_data
*fdc
, int x
)
1284 for (j
= 0, step
= 1;
1285 (i
= fdsts_rd(fdc
) & (NE7_DIO
|NE7_RQM
)) != NE7_RQM
&&
1288 if (i
== (NE7_DIO
|NE7_RQM
))
1289 return (fdc_err(fdc
, "ready for input in output\n"));
1294 if (j
>= FDSTS_TIMEOUT
)
1295 return (fdc_err(fdc
, bootverbose
? "output ready timeout\n": 0));
1297 /* Send the command and return */
1299 TRACE1("[0x%x->FDDATA]", x
);
1303 /****************************************************************************/
1304 /* fdopen/fdclose */
1305 /****************************************************************************/
1307 Fdopen(struct dev_open_args
*ap
)
1309 cdev_t dev
= ap
->a_head
.a_dev
;
1310 fdu_t fdu
= dkunit(dev
);
1311 struct disk_info info
;
1319 if ((fd
= devclass_get_softc(fd_devclass
, fdu
)) == 0)
1322 if ((fdc
== NULL
) || (fd
->type
== NO_TYPE
))
1326 * Figure out the type of floppy. There are special whole-disk-device
1327 * overrides that will override the current type.
1330 if (type
== WHOLE_SLICE_PART
) {
1331 type
= fd
->type
; /* do not change selected type data */
1333 } else if (type
> 128) {
1334 type
-= 128; /* set to specific format */
1337 type
= fd
->type
; /* reset to default */
1342 if (type
!= fd
->type
) {
1344 * For each type of basic drive, make sure we are trying
1345 * to open a type it can do,
1360 type
= FD_1480in5_25
;
1363 type
= FD_1440in5_25
;
1368 type
= FD_820in5_25
;
1371 type
= FD_800in5_25
;
1374 type
= FD_720in5_25
;
1377 type
= FD_640in5_25
;
1380 type
= FD_360in5_25
;
1387 if ( type
!= FD_1720
1401 * fd->type is the basic drive type, not the current format
1402 * we are reading. We only change the type when opening the
1403 * whole-slice-partition
1406 fd
->ft
= fd_types
[type
- 1];
1407 fd
->flags
|= FD_OPEN
;
1410 * Clearing the DMA overrun counter at open time is a bit messy.
1411 * Since we're only managing one counter per controller, opening
1412 * the second drive could mess it up. Anyway, if the DMA overrun
1413 * condition is really persistent, it will eventually time out
1414 * still. OTOH, clearing it here will ensure we'll at least start
1415 * trying again after a previous (maybe even long ago) failure.
1416 * Also, this is merely a stop-gap measure only that should not
1417 * happen during normal operation, so we can tolerate it to be a
1418 * bit sloppy about this.
1420 fdc
->dma_overruns
= 0;
1423 * Set disk parameters for the disk management layer.
1425 * Note that we do not set RAWEXTENSIONS here. We override
1426 * the minor numbers in the raw-extension range and handle them
1429 bzero(&info
, sizeof(info
));
1431 info
.d_media_blksize
= 128 << ft
->secsize
;
1432 info
.d_media_blocks
= ft
->size
;
1433 info
.d_dsflags
= DSO_COMPATPARTA
| DSO_COMPATMBR
;
1434 info
.d_nheads
= ft
->heads
;
1435 info
.d_secpertrack
= ft
->sectrac
;
1436 info
.d_secpercyl
= ft
->sectrac
* ft
->heads
;
1437 info
.d_ncylinders
= ft
->size
/ info
.d_secpercyl
;
1438 disk_setdiskinfo(&fd
->disk
, &info
);
1444 fdclose(struct dev_close_args
*ap
)
1446 cdev_t dev
= ap
->a_head
.a_dev
;
1447 fdu_t fdu
= dkunit(dev
);
1450 fd
= devclass_get_softc(fd_devclass
, fdu
);
1451 fd
->flags
&= ~FD_OPEN
;
1452 fd
->options
&= ~(FDOPT_NORETRY
| FDOPT_NOERRLOG
);
1457 /****************************************************************************/
1459 /****************************************************************************/
1461 fdstrategy(struct dev_strategy_args
*ap
)
1463 cdev_t dev
= ap
->a_head
.a_dev
;
1464 struct bio
*bio
= ap
->a_bio
;
1465 struct buf
*bp
= bio
->bio_buf
;
1466 unsigned nblocks
, blknum
, cando
;
1473 fd
= devclass_get_softc(fd_devclass
, fdu
);
1475 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)",
1476 (u_long
)major(dev
), (u_long
)minor(dev
));
1478 if (fd
->type
== NO_TYPE
) {
1479 bp
->b_error
= ENXIO
;
1480 bp
->b_flags
|= B_ERROR
;
1484 fdblk
= 128 << (fd
->ft
.secsize
);
1485 if (bp
->b_cmd
!= BUF_CMD_FORMAT
) {
1486 if (bio
->bio_offset
< 0) {
1488 "fd%d: fdstrat: bad request offset = %"PRId64
", bcount = %d\n",
1489 fdu
, bio
->bio_offset
, bp
->b_bcount
);
1490 bp
->b_error
= EINVAL
;
1491 bp
->b_flags
|= B_ERROR
;
1494 if ((bp
->b_bcount
% fdblk
) != 0) {
1495 bp
->b_error
= EINVAL
;
1496 bp
->b_flags
|= B_ERROR
;
1502 * Set up block calculations.
1504 if (bio
->bio_offset
> 20000000LL * fdblk
) {
1506 * Reject unreasonably high block number, prevent the
1507 * multiplication below from overflowing.
1509 bp
->b_error
= EINVAL
;
1510 bp
->b_flags
|= B_ERROR
;
1513 blknum
= (unsigned)(bio
->bio_offset
/ fdblk
);
1514 nblocks
= fd
->ft
.size
;
1516 if (blknum
+ (bp
->b_bcount
/ fdblk
) > nblocks
) {
1517 if (blknum
<= nblocks
) {
1518 cando
= (nblocks
- blknum
) * fdblk
;
1519 bp
->b_resid
= bp
->b_bcount
- cando
;
1521 goto bad
; /* not actually bad but EOF */
1523 bp
->b_error
= EINVAL
;
1524 bp
->b_flags
|= B_ERROR
;
1529 bio
->bio_driver_info
= dev
;
1530 bioqdisksort(&fdc
->bio_queue
, bio
);
1531 callout_stop(&fd
->toffhandle
);
1533 /* Tell devstat we are starting on the transaction */
1534 devstat_start_transaction(&fd
->device_stats
);
1536 device_busy(fd
->dev
);
1547 /***************************************************************\
1549 * We have just queued something.. if the controller is not busy *
1550 * then simulate the case where it has just finished a command *
1551 * So that it (the interrupt routine) looks on the queue for more*
1552 * work to do and picks up what we just added. *
1553 * If the controller is already busy, we need do nothing, as it *
1554 * will pick up our work when the present work completes *
1555 \***************************************************************/
1557 fdstart(struct fdc_data
*fdc
)
1560 if(fdc
->state
== DEVIDLE
)
1568 fd_iotimeout(void *xfdc
)
1573 TRACE1("fd%d[fd_iotimeout()]", fdc
->fdu
);
1576 * Due to IBM's brain-dead design, the FDC has a faked ready
1577 * signal, hardwired to ready == true. Thus, any command
1578 * issued if there's no diskette in the drive will _never_
1579 * complete, and must be aborted by resetting the FDC.
1580 * Many thanks, Big Blue!
1581 * The FDC must not be reset directly, since that would
1582 * interfere with the state machine. Instead, pretend that
1583 * the command completed but was invalid. The state machine
1584 * will reset the FDC and retry once.
1587 fdc
->status
[0] = NE7_ST0_IC_IV
;
1588 fdc
->flags
&= ~FDC_STAT_VALID
;
1589 fdc
->state
= IOTIMEDOUT
;
1594 /* just ensure it is running in a critical section */
1596 fd_pseudointr(void *xfdc
)
1603 /***********************************************************************\
1605 * keep calling the state machine until it returns a 0 *
1606 * ALWAYS called at SPLBIO *
1607 \***********************************************************************/
1609 fdc_intr(void *xfdc
)
1617 * magic pseudo-DMA initialization for YE FDC. Sets count and
1620 #define SET_BCDR(fdc,wr,cnt,port) \
1621 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \
1622 ((cnt)-1) & 0xff); \
1623 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \
1624 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f)));
1627 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy
1629 static int fdcpio(fdc_p fdc
, buf_cmd_t cmd
, caddr_t addr
, u_int count
)
1631 u_char
*cptr
= (u_char
*)addr
;
1633 if (cmd
== BUF_CMD_READ
) {
1634 if (fdc
->state
!= PIOREAD
) {
1635 fdc
->state
= PIOREAD
;
1638 SET_BCDR(fdc
, 0, count
, 0);
1639 bus_space_read_multi_1(fdc
->portt
, fdc
->porth
, fdc
->port_off
+
1640 FDC_YE_DATAPORT
, cptr
, count
);
1642 bus_space_write_multi_1(fdc
->portt
, fdc
->porth
, fdc
->port_off
+
1643 FDC_YE_DATAPORT
, cptr
, count
);
1644 SET_BCDR(fdc
, 0, count
, 0);
1649 /***********************************************************************\
1650 * The controller state machine. *
1651 * if it returns a non zero value, it should be called again immediatly *
1652 \***********************************************************************/
1656 int read
, format
, head
, i
, sec
= 0, sectrac
, st0
, cyl
, st3
;
1657 unsigned blknum
= 0, b_cylinder
= 0;
1662 struct fd_formb
*finfo
= NULL
;
1668 bio
= bioq_first(&fdc
->bio_queue
);
1670 bioq_remove(&fdc
->bio_queue
, bio
);
1675 /***********************************************\
1676 * nothing left for this controller to do *
1677 * Force into the IDLE state, *
1678 \***********************************************/
1679 fdc
->state
= DEVIDLE
;
1681 device_printf(fdc
->fdc_dev
,
1682 "unexpected valid fd pointer\n");
1686 TRACE1("[fdc%d IDLE]", fdc
->fdcu
);
1690 dev
= bio
->bio_driver_info
;
1693 fd
= devclass_get_softc(fd_devclass
, fdu
);
1694 fdblk
= 128 << fd
->ft
.secsize
;
1695 if (fdc
->fd
&& (fd
!= fdc
->fd
))
1696 device_printf(fd
->dev
, "confused fd pointers\n");
1697 read
= (bp
->b_cmd
== BUF_CMD_READ
);
1698 format
= (bp
->b_cmd
== BUF_CMD_FORMAT
);
1700 finfo
= (struct fd_formb
*)bp
->b_data
;
1701 fd
->skip
= (char *)&(finfo
->fd_formb_cylno(0))
1704 if (fdc
->state
== DOSEEK
|| fdc
->state
== SEEKCOMPLETE
) {
1705 blknum
= (unsigned)(bio
->bio_offset
/ fdblk
) +
1707 b_cylinder
= blknum
/ (fd
->ft
.sectrac
* fd
->ft
.heads
);
1709 TRACE1("fd%d", fdu
);
1710 TRACE1("[%s]", fdstates
[fdc
->state
]);
1711 TRACE1("(0x%x)", fd
->flags
);
1712 callout_reset(&fd
->toffhandle
, 4 * hz
, fd_turnoff
, fd
);
1716 case FINDWORK
: /* we have found new work */
1721 fdc
->fdctl_wr(fdc
, fd
->ft
.trans
);
1722 TRACE1("[0x%x->FDCTL]", fd
->ft
.trans
);
1723 /*******************************************************\
1724 * If the next drive has a motor startup pending, then *
1725 * it will start up in its own good time *
1726 \*******************************************************/
1727 if(fd
->flags
& FD_MOTOR_WAIT
) {
1728 fdc
->state
= MOTORWAIT
;
1729 return (0); /* come back later */
1731 /*******************************************************\
1732 * Maybe if it's not starting, it SHOULD be starting *
1733 \*******************************************************/
1734 if (!(fd
->flags
& FD_MOTOR
))
1736 fdc
->state
= MOTORWAIT
;
1740 else /* at least make sure we are selected */
1742 set_motor(fdc
, fd
->fdsu
, TURNON
);
1744 if (fdc
->flags
& FDC_NEEDS_RESET
) {
1745 fdc
->state
= RESETCTLR
;
1746 fdc
->flags
&= ~FDC_NEEDS_RESET
;
1748 fdc
->state
= DOSEEK
;
1751 if (b_cylinder
== (unsigned)fd
->track
)
1753 fdc
->state
= SEEKCOMPLETE
;
1756 if (fd_cmd(fdc
, 3, NE7CMD_SEEK
,
1757 fd
->fdsu
, b_cylinder
* fd
->ft
.steptrac
,
1761 * seek command not accepted, looks like
1762 * the FDC went off to the Saints...
1764 fdc
->retry
= 6; /* try a reset */
1765 return(retrier(fdc
));
1767 fd
->track
= FD_NO_TRACK
;
1768 fdc
->state
= SEEKWAIT
;
1769 return(0); /* will return later */
1771 /* allow heads to settle */
1772 callout_reset(&fdc
->pseudointr_ch
, hz
/ 16,
1773 fd_pseudointr
, fdc
);
1774 fdc
->state
= SEEKCOMPLETE
;
1775 return(0); /* will return later */
1776 case SEEKCOMPLETE
: /* SEEK DONE, START DMA */
1777 /* Make sure seek really happened*/
1778 if(fd
->track
== FD_NO_TRACK
) {
1779 int descyl
= b_cylinder
* fd
->ft
.steptrac
;
1782 * This might be a "ready changed" interrupt,
1783 * which cannot really happen since the
1784 * RDY pin is hardwired to + 5 volts. This
1785 * generally indicates a "bouncing" intr
1786 * line, so do one of the following:
1788 * When running on an enhanced FDC that is
1789 * known to not go stuck after responding
1790 * with INVALID, fetch all interrupt states
1791 * until seeing either an INVALID or a
1792 * real interrupt condition.
1794 * When running on a dumb old NE765, give
1795 * up immediately. The controller will
1796 * provide up to four dummy RC interrupt
1797 * conditions right after reset (for the
1798 * corresponding four drives), so this is
1799 * our only chance to get notice that it
1800 * was not the FDC that caused the interrupt.
1802 if (fd_sense_int(fdc
, &st0
, &cyl
)
1805 if(fdc
->fdct
== FDC_NE765
1806 && (st0
& NE7_ST0_IC
) == NE7_ST0_IC_RC
)
1807 return 0; /* hope for a real intr */
1808 } while ((st0
& NE7_ST0_IC
) == NE7_ST0_IC_RC
);
1813 * seek to cyl 0 requested; make sure we are
1816 if (fd_sense_drive_status(fdc
, &st3
))
1818 if ((st3
& NE7_ST3_T0
) == 0) {
1820 "fd%d: Seek to cyl 0, but not really there (ST3 = %pb%i)\n",
1821 fdu
, NE7_ST3BITS
, st3
);
1828 return (retrier(fdc
));
1832 if (cyl
!= descyl
) {
1834 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n",
1835 fdu
, descyl
, cyl
, st0
);
1838 return (retrier(fdc
));
1842 fd
->track
= b_cylinder
;
1843 if (!(fdc
->flags
& FDC_NODMA
)) {
1844 isa_dmastart(isa_dmabp(bp
),
1845 bp
->b_data
+fd
->skip
,
1846 format
? bp
->b_bcount
: fdblk
, fdc
->dmachan
);
1848 sectrac
= fd
->ft
.sectrac
;
1849 sec
= blknum
% (sectrac
* fd
->ft
.heads
);
1850 head
= sec
/ sectrac
;
1851 sec
= sec
% sectrac
+ 1;
1852 fd
->hddrv
= ((head
&1)<<2)+fdu
;
1856 /* make sure the drive is writable */
1857 if(fd_sense_drive_status(fdc
, &st3
) != 0)
1859 /* stuck controller? */
1860 if (!(fdc
->flags
& FDC_NODMA
))
1861 isa_dmadone(isa_dmabp(bp
),
1862 bp
->b_data
+ fd
->skip
,
1863 format
? bp
->b_bcount
: fdblk
,
1865 fdc
->retry
= 6; /* reset the beast */
1866 return (retrier(fdc
));
1868 if(st3
& NE7_ST3_WP
)
1871 * XXX YES! this is ugly.
1872 * in order to force the current operation
1873 * to fail, we will have to fake an FDC
1874 * error - all error handling is done
1877 fdc
->status
[0] = NE7_ST0_IC_AT
;
1878 fdc
->status
[1] = NE7_ST1_NW
;
1880 fdc
->status
[3] = fd
->track
;
1881 fdc
->status
[4] = head
;
1882 fdc
->status
[5] = sec
;
1883 fdc
->retry
= 8; /* break out immediately */
1884 fdc
->state
= IOTIMEDOUT
; /* not really... */
1890 if (fdc
->flags
& FDC_NODMA
) {
1892 * This seems to be necessary for
1893 * whatever obscure reason; if we omit
1894 * it, we end up filling the sector ID
1895 * fields of the newly formatted track
1896 * entirely with garbage, causing
1897 * `wrong cylinder' errors all over
1898 * the place when trying to read them
1903 SET_BCDR(fdc
, 1, bp
->b_bcount
, 0);
1905 (void)fdcpio(fdc
,bp
->b_cmd
,
1906 bp
->b_data
+fd
->skip
,
1911 if(fd_cmd(fdc
, 6, NE7CMD_FORMAT
, head
<< 2 | fdu
,
1912 finfo
->fd_formb_secshift
,
1913 finfo
->fd_formb_nsecs
,
1914 finfo
->fd_formb_gaplen
,
1915 finfo
->fd_formb_fillbyte
, 0)) {
1916 /* controller fell over */
1917 if (!(fdc
->flags
& FDC_NODMA
))
1918 isa_dmadone(isa_dmabp(bp
),
1919 bp
->b_data
+ fd
->skip
,
1920 format
? bp
->b_bcount
: fdblk
,
1923 return (retrier(fdc
));
1926 if (fdc
->flags
& FDC_NODMA
) {
1928 * this seems to be necessary even when
1931 SET_BCDR(fdc
, 1, fdblk
, 0);
1934 * perform the write pseudo-DMA before
1935 * the WRITE command is sent
1938 (void)fdcpio(fdc
,bp
->b_cmd
,
1939 bp
->b_data
+fd
->skip
,
1943 (read
? NE7CMD_READ
: NE7CMD_WRITE
),
1944 head
<< 2 | fdu
, /* head & unit */
1945 fd
->track
, /* track */
1947 sec
, /* sector + 1 */
1948 fd
->ft
.secsize
, /* sector size */
1949 sectrac
, /* sectors/track */
1950 fd
->ft
.gap
, /* gap size */
1951 fd
->ft
.datalen
, /* data length */
1953 /* the beast is sleeping again */
1954 if (!(fdc
->flags
& FDC_NODMA
))
1955 isa_dmadone(isa_dmabp(bp
),
1956 bp
->b_data
+ fd
->skip
,
1957 format
? bp
->b_bcount
: fdblk
,
1960 return (retrier(fdc
));
1963 if (fdc
->flags
& FDC_NODMA
)
1965 * if this is a read, then simply await interrupt
1966 * before performing PIO
1968 if (read
&& !fdcpio(fdc
,bp
->b_cmd
,
1969 bp
->b_data
+fd
->skip
,fdblk
)) {
1970 callout_reset(&fd
->tohandle
, hz
,
1972 return(0); /* will return later */
1976 * write (or format) operation will fall through and
1977 * await completion interrupt
1979 fdc
->state
= IOCOMPLETE
;
1980 callout_reset(&fd
->tohandle
, hz
, fd_iotimeout
, fdc
);
1981 return (0); /* will return later */
1984 * actually perform the PIO read. The IOCOMPLETE case
1985 * removes the timeout for us.
1987 (void)fdcpio(fdc
,bp
->b_cmd
,bp
->b_data
+fd
->skip
,fdblk
);
1988 fdc
->state
= IOCOMPLETE
;
1990 case IOCOMPLETE
: /* IO DONE, post-analyze */
1991 callout_stop(&fd
->tohandle
);
1993 if (fd_read_status(fdc
, fd
->fdsu
)) {
1994 if (!(fdc
->flags
& FDC_NODMA
)) {
1995 isa_dmadone(isa_dmabp(bp
),
1996 bp
->b_data
+ fd
->skip
,
1997 format
? bp
->b_bcount
: fdblk
,
2001 fdc
->retry
= 6; /* force a reset */
2002 return (retrier(fdc
));
2005 fdc
->state
= IOTIMEDOUT
;
2010 if (!(fdc
->flags
& FDC_NODMA
)) {
2011 isa_dmadone(isa_dmabp(bp
),
2012 bp
->b_data
+ fd
->skip
,
2013 format
? bp
->b_bcount
: fdblk
, fdc
->dmachan
);
2015 if (fdc
->status
[0] & NE7_ST0_IC
) {
2016 if ((fdc
->status
[0] & NE7_ST0_IC
) == NE7_ST0_IC_AT
2017 && fdc
->status
[1] & NE7_ST1_OR
) {
2019 * DMA overrun. Someone hogged the bus and
2020 * didn't release it in time for the next
2023 * We normally restart this without bumping
2024 * the retry counter. However, in case
2025 * something is seriously messed up (like
2026 * broken hardware), we rather limit the
2027 * number of retries so the IO operation
2028 * doesn't block indefinately.
2030 if (fdc
->dma_overruns
++ < FDC_DMAOV_MAX
) {
2031 fdc
->state
= SEEKCOMPLETE
;
2033 } /* else fall through */
2035 if((fdc
->status
[0] & NE7_ST0_IC
) == NE7_ST0_IC_IV
2037 fdc
->retry
= 6; /* force a reset */
2038 else if((fdc
->status
[0] & NE7_ST0_IC
) == NE7_ST0_IC_AT
2039 && fdc
->status
[2] & NE7_ST2_WC
2041 fdc
->retry
= 3; /* force recalibrate */
2042 return (retrier(fdc
));
2045 /* Operation successful, retry DMA overruns again next time. */
2046 fdc
->dma_overruns
= 0;
2048 if (!format
&& fd
->skip
< bp
->b_bcount
- bp
->b_resid
) {
2049 /* set up next transfer */
2050 fdc
->state
= DOSEEK
;
2056 device_unbusy(fd
->dev
);
2058 devstat_end_transaction_buf(&fd
->device_stats
, bp
);
2062 fdc
->state
= FINDWORK
;
2068 fdc
->state
= RESETCOMPLETE
;
2072 * Discard all the results from the reset so that they
2073 * can't cause an unexpected interrupt later.
2075 for (i
= 0; i
< 4; i
++)
2076 (void)fd_sense_int(fdc
, &st0
, &cyl
);
2077 fdc
->state
= STARTRECAL
;
2080 if(fd_cmd(fdc
, 2, NE7CMD_RECAL
, fdu
, 0)) {
2083 return (retrier(fdc
));
2085 fdc
->state
= RECALWAIT
;
2086 return (0); /* will return later */
2088 /* allow heads to settle */
2089 callout_reset(&fdc
->pseudointr_ch
, hz
/ 8, fd_pseudointr
, fdc
);
2090 fdc
->state
= RECALCOMPLETE
;
2091 return (0); /* will return later */
2095 * See SEEKCOMPLETE for a comment on this:
2097 if (fd_sense_int(fdc
, &st0
, &cyl
) == FD_NOT_VALID
)
2099 if(fdc
->fdct
== FDC_NE765
2100 && (st0
& NE7_ST0_IC
) == NE7_ST0_IC_RC
)
2101 return 0; /* hope for a real intr */
2102 } while ((st0
& NE7_ST0_IC
) == NE7_ST0_IC_RC
);
2103 if ((st0
& NE7_ST0_IC
) != NE7_ST0_IC_NT
|| cyl
!= 0)
2107 * a recalibrate from beyond cylinder 77
2108 * will "fail" due to the FDC limitations;
2109 * since people used to complain much about
2110 * the failure message, try not logging
2111 * this one if it seems to be the first
2114 kprintf("fd%d: recal failed ST0 %pb%i cyl %d\n",
2115 fdu
, NE7_ST0BITS
, st0
, cyl
);
2116 if(fdc
->retry
< 3) fdc
->retry
= 3;
2117 return (retrier(fdc
));
2120 /* Seek (probably) necessary */
2121 fdc
->state
= DOSEEK
;
2122 return (1); /* will return immediatly */
2124 if(fd
->flags
& FD_MOTOR_WAIT
)
2126 return (0); /* time's not up yet */
2128 if (fdc
->flags
& FDC_NEEDS_RESET
) {
2129 fdc
->state
= RESETCTLR
;
2130 fdc
->flags
&= ~FDC_NEEDS_RESET
;
2133 * If all motors were off, then the controller was
2134 * reset, so it has lost track of the current
2135 * cylinder. Recalibrate to handle this case.
2136 * But first, discard the results of the reset.
2138 fdc
->state
= RESETCOMPLETE
;
2140 return (1); /* will return immediatly */
2142 device_printf(fdc
->fdc_dev
, "unexpected FD int->");
2143 if (fd_read_status(fdc
, fd
->fdsu
) == 0)
2144 kprintf("FDC status :%x %x %x %x %x %x %x ",
2153 kprintf("No status available ");
2154 if (fd_sense_int(fdc
, &st0
, &cyl
) != 0)
2156 kprintf("[controller is dead now]\n");
2159 kprintf("ST0 = %x, PCN = %x\n", st0
, cyl
);
2162 /*XXX confusing: some branches return immediately, others end up here*/
2163 return (1); /* Come back immediatly to new state */
2167 retrier(struct fdc_data
*fdc
)
2177 dev
= bio
->bio_driver_info
;
2179 /* XXX shouldn't this be cached somewhere? */
2181 fd
= devclass_get_softc(fd_devclass
, fdu
);
2182 if (fd
->options
& FDOPT_NORETRY
)
2185 switch (fdc
->retry
) {
2186 case 0: case 1: case 2:
2187 fdc
->state
= SEEKCOMPLETE
;
2189 case 3: case 4: case 5:
2190 fdc
->state
= STARTRECAL
;
2193 fdc
->state
= RESETCTLR
;
2200 int printerror
= (fd
->options
& FDOPT_NOERRLOG
) == 0;
2204 * note: use the correct device for more
2205 * verbose error reporting.
2208 "hard error", LOG_PRINTF
,
2212 if (fdc
->flags
& FDC_STAT_VALID
)
2214 " (ST0 %pb%i ST1 %pb%i ST2 %pb%i cyl %u hd %u sec %u)\n",
2215 NE7_ST0BITS
, fdc
->status
[0],
2216 NE7_ST1BITS
, fdc
->status
[1],
2217 NE7_ST2BITS
, fdc
->status
[2],
2218 fdc
->status
[3], fdc
->status
[4],
2221 kprintf(" (No status)\n");
2224 bp
->b_flags
|= B_ERROR
;
2226 bp
->b_resid
+= bp
->b_bcount
- fdc
->fd
->skip
;
2230 device_unbusy(fd
->dev
);
2232 devstat_end_transaction_buf(&fdc
->fd
->device_stats
, bp
);
2234 fdc
->state
= FINDWORK
;
2235 fdc
->flags
|= FDC_NEEDS_RESET
;
2245 fdformat(cdev_t dev
, struct fd_formb
*finfo
, struct ucred
*cred
)
2254 fd
= devclass_get_softc(fd_devclass
, fdu
);
2255 fdblk
= 128 << fd
->ft
.secsize
;
2257 /* set up a buffer header for fdstrategy() */
2259 bp
->b_cmd
= BUF_CMD_FORMAT
;
2262 * calculate a fake blkno, so fdstrategy() would initiate a
2263 * seek to the requested cylinder
2265 bp
->b_bio1
.bio_offset
= (off_t
)(finfo
->cyl
*
2266 (fd
->ft
.sectrac
* fd
->ft
.heads
)
2267 + finfo
->head
* fd
->ft
.sectrac
) * fdblk
;
2268 bp
->b_bio1
.bio_driver_info
= dev
;
2269 bp
->b_bio1
.bio_flags
|= BIO_SYNC
;
2270 bp
->b_bio1
.bio_done
= biodone_sync
;
2272 bp
->b_bcount
= sizeof(struct fd_idfield_data
) * finfo
->fd_formb_nsecs
;
2273 bp
->b_data
= (caddr_t
)finfo
;
2275 /* now do the format */
2276 dev_dstrategy(dev
, &bp
->b_bio1
);
2278 /* ...and wait for it to complete */
2279 rv
= biowait_timeout(&bp
->b_bio1
, "fdform", 20 * hz
);
2280 if (rv
== EWOULDBLOCK
) {
2284 device_unbusy(fd
->dev
);
2286 biodone(&bp
->b_bio1
);
2288 if (bp
->b_flags
& B_ERROR
)
2291 * allow the process to be swapped
2298 * TODO: don't allocate buffer on stack.
2302 fdioctl(struct dev_ioctl_args
*ap
)
2304 cdev_t dev
= ap
->a_head
.a_dev
;
2305 fdu_t fdu
= dkunit(dev
);
2306 fd_p fd
= devclass_get_softc(fd_devclass
, fdu
);
2307 struct fdc_status
*fsp
;
2310 switch (ap
->a_cmd
) {
2312 if ((ap
->a_fflag
& FWRITE
) == 0)
2313 error
= EBADF
; /* must be opened for writing */
2314 else if (((struct fd_formb
*)ap
->a_data
)->format_version
!=
2316 error
= EINVAL
; /* wrong version of formatting prog */
2318 error
= fdformat(dev
, (struct fd_formb
*)ap
->a_data
, ap
->a_cred
);
2321 case FD_GTYPE
: /* get drive type */
2322 *(struct fd_type
*)ap
->a_data
= fd
->ft
;
2325 case FD_STYPE
: /* set drive type */
2326 /* this is considered harmful; only allow for superuser */
2327 if (priv_check_cred(ap
->a_cred
, PRIV_ROOT
, 0) != 0)
2329 fd
->ft
= *(struct fd_type
*)ap
->a_data
;
2332 case FD_GOPTS
: /* get drive options */
2333 *(int *)ap
->a_data
= fd
->options
;
2336 case FD_SOPTS
: /* set drive options */
2337 fd
->options
= *(int *)ap
->a_data
;
2341 fsp
= (struct fdc_status
*)ap
->a_data
;
2342 if ((fd
->fdc
->flags
& FDC_STAT_VALID
) == 0)
2344 memcpy(fsp
->status
, fd
->fdc
->status
, 7 * sizeof(u_int
));