1633 lines
40 KiB
C
1633 lines
40 KiB
C
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Don Ahn.
|
|
*
|
|
* Portions Copyright (c) 1993, 1994 by
|
|
* jc@irbs.UUCP (John Capo)
|
|
* vak@zebub.msk.su (Serge Vakulenko)
|
|
* ache@astral.msk.su (Andrew A. Chernov)
|
|
* joerg_wunsch@uriah.sax.de (Joerg Wunsch)
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)fd.c 7.4 (Berkeley) 5/25/91
|
|
* $Id: fd.c,v 1.41 1994/11/08 05:42:10 jkh Exp $
|
|
*
|
|
*/
|
|
|
|
#include "ft.h"
|
|
#if NFT < 1
|
|
#undef NFDC
|
|
#endif
|
|
#include "fd.h"
|
|
|
|
#if NFDC > 0
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/dkbad.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/file.h>
|
|
#include <sys/ioctl.h>
|
|
#include <machine/ioctl_fd.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/devconf.h>
|
|
#include <sys/dkstat.h>
|
|
#include <i386/isa/isa.h>
|
|
#include <i386/isa/isa_device.h>
|
|
#include <i386/isa/fdreg.h>
|
|
#include <i386/isa/fdc.h>
|
|
#include <i386/isa/rtc.h>
|
|
#if NFT > 0
|
|
#include <sys/ftape.h>
|
|
#include <i386/isa/ftreg.h>
|
|
#endif
|
|
|
|
static int fd_goaway(struct kern_devconf *, int);
|
|
static int fdc_goaway(struct kern_devconf *, int);
|
|
static int fd_externalize(struct proc *, struct kern_devconf *, void *, size_t);
|
|
|
|
/*
|
|
* Templates for the kern_devconf structures used when we attach.
|
|
*/
|
|
static struct kern_devconf kdc_fd[NFD] = { {
|
|
0, 0, 0, /* filled in by kern_devconf.c */
|
|
"fd", 0, { MDDT_DISK, 0 },
|
|
fd_externalize, 0, fd_goaway, DISK_EXTERNALLEN,
|
|
0, /* parent */
|
|
0, /* parentdata */
|
|
DC_UNKNOWN, /* state */
|
|
"floppy disk"
|
|
} };
|
|
|
|
struct kern_devconf kdc_fdc[NFDC] = { {
|
|
0, 0, 0, /* filled in by kern_devconf.c */
|
|
"fdc", 0, { MDDT_ISA, 0, "bio" },
|
|
isa_generic_externalize, 0, fdc_goaway, ISA_EXTERNALLEN,
|
|
0, /* parent */
|
|
0, /* parentdata */
|
|
DC_UNKNOWN, /* state */
|
|
"floppy disk/tape controller"
|
|
} };
|
|
|
|
static inline void
|
|
fd_registerdev(int ctlr, int unit)
|
|
{
|
|
if(unit != 0)
|
|
kdc_fd[unit] = kdc_fd[0];
|
|
|
|
kdc_fd[unit].kdc_unit = unit;
|
|
kdc_fd[unit].kdc_parent = &kdc_fdc[ctlr];
|
|
kdc_fd[unit].kdc_parentdata = 0;
|
|
dev_attach(&kdc_fd[unit]);
|
|
}
|
|
|
|
static inline void
|
|
fdc_registerdev(struct isa_device *dvp)
|
|
{
|
|
int unit = dvp->id_unit;
|
|
|
|
if(unit != 0)
|
|
kdc_fdc[unit] = kdc_fdc[0];
|
|
|
|
kdc_fdc[unit].kdc_unit = unit;
|
|
kdc_fdc[unit].kdc_parent = &kdc_isa0;
|
|
kdc_fdc[unit].kdc_parentdata = dvp;
|
|
dev_attach(&kdc_fdc[unit]);
|
|
}
|
|
|
|
static int
|
|
fdc_goaway(struct kern_devconf *kdc, int force)
|
|
{
|
|
if(force) {
|
|
dev_detach(kdc);
|
|
return 0;
|
|
} else {
|
|
return EBUSY; /* XXX fix */
|
|
}
|
|
}
|
|
|
|
static int
|
|
fd_goaway(struct kern_devconf *kdc, int force)
|
|
{
|
|
dev_detach(kdc);
|
|
return 0;
|
|
}
|
|
|
|
#define RAW_PART 2
|
|
#define b_cylin b_resid
|
|
|
|
/* misuse a flag to identify format operation */
|
|
#define B_FORMAT B_XXX
|
|
|
|
/*
|
|
* this biotab field doubles as a field for the physical unit number
|
|
* on the controller
|
|
*/
|
|
#define id_physid id_scsiid
|
|
|
|
#define NUMTYPES 14
|
|
#define NUMDENS (NUMTYPES - 6)
|
|
|
|
/* These defines (-1) must match index for fd_types */
|
|
#define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */
|
|
#define NO_TYPE 0 /* must match NO_TYPE in ft.c */
|
|
#define FD_1720 1
|
|
#define FD_1480 2
|
|
#define FD_1440 3
|
|
#define FD_1200 4
|
|
#define FD_820 5
|
|
#define FD_800 6
|
|
#define FD_720 7
|
|
#define FD_360 8
|
|
|
|
#define FD_1480in5_25 9
|
|
#define FD_1440in5_25 10
|
|
#define FD_820in5_25 11
|
|
#define FD_800in5_25 12
|
|
#define FD_720in5_25 13
|
|
#define FD_360in5_25 14
|
|
|
|
|
|
struct fd_type fd_types[NUMTYPES] =
|
|
{
|
|
{ 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */
|
|
{ 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */
|
|
{ 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */
|
|
{ 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */
|
|
{ 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */
|
|
{ 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */
|
|
{ 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */
|
|
{ 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */
|
|
|
|
{ 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */
|
|
{ 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */
|
|
{ 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */
|
|
{ 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */
|
|
{ 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */
|
|
{ 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */
|
|
};
|
|
|
|
#define DRVS_PER_CTLR 2 /* 2 floppies */
|
|
/***********************************************************************\
|
|
* Per controller structure. *
|
|
\***********************************************************************/
|
|
struct fdc_data fdc_data[NFDC];
|
|
|
|
/***********************************************************************\
|
|
* Per drive structure. *
|
|
* N per controller (DRVS_PER_CTLR) *
|
|
\***********************************************************************/
|
|
struct fd_data {
|
|
struct fdc_data *fdc; /* pointer to controller structure */
|
|
int fdsu; /* this units number on this controller */
|
|
int type; /* Drive type (FD_1440...) */
|
|
struct fd_type *ft; /* pointer to the type descriptor */
|
|
int flags;
|
|
#define FD_OPEN 0x01 /* it's open */
|
|
#define FD_ACTIVE 0x02 /* it's active */
|
|
#define FD_MOTOR 0x04 /* motor should be on */
|
|
#define FD_MOTOR_WAIT 0x08 /* motor coming up */
|
|
int skip;
|
|
int hddrv;
|
|
int track; /* where we think the head is */
|
|
int options; /* user configurable options, see ioctl_fd.h */
|
|
int dkunit; /* disk stats unit number */
|
|
} fd_data[NFD];
|
|
|
|
/***********************************************************************\
|
|
* Throughout this file the following conventions will be used: *
|
|
* fd is a pointer to the fd_data struct for the drive in question *
|
|
* fdc is a pointer to the fdc_data struct for the controller *
|
|
* fdu is the floppy drive unit number *
|
|
* fdcu is the floppy controller unit number *
|
|
* fdsu is the floppy drive unit number on that controller. (sub-unit) *
|
|
\***********************************************************************/
|
|
|
|
#if NFT > 0
|
|
int ftopen(dev_t, int);
|
|
int ftintr(ftu_t ftu);
|
|
int ftclose(dev_t, int);
|
|
void ftstrategy(struct buf *);
|
|
int ftioctl(dev_t, int, caddr_t, int, struct proc *);
|
|
int ftdump(dev_t);
|
|
int ftsize(dev_t);
|
|
int ftattach(struct isa_device *, struct isa_device *);
|
|
#endif
|
|
|
|
/* autoconfig functions */
|
|
static int fdprobe(struct isa_device *);
|
|
static int fdattach(struct isa_device *);
|
|
|
|
/* exported functions */
|
|
int fdsize (dev_t);
|
|
void fdintr(fdcu_t);
|
|
int Fdopen(dev_t, int);
|
|
int fdclose(dev_t, int);
|
|
void fdstrategy(struct buf *);
|
|
int fdioctl(dev_t, int, caddr_t, int, struct proc *);
|
|
|
|
/* needed for ft driver, thus exported */
|
|
int in_fdc(fdcu_t);
|
|
int out_fdc(fdcu_t, int);
|
|
|
|
/* internal functions */
|
|
static void set_motor(fdcu_t, int, int);
|
|
# define TURNON 1
|
|
# define TURNOFF 0
|
|
static timeout_t fd_turnoff;
|
|
static timeout_t fd_motor_on;
|
|
static void fd_turnon(fdu_t);
|
|
static void fdc_reset(fdc_p);
|
|
static void fdstart(fdcu_t);
|
|
static timeout_t fd_timeout;
|
|
static timeout_t fd_pseudointr;
|
|
static int fdstate(fdcu_t, fdc_p);
|
|
static int retrier(fdcu_t);
|
|
static int fdformat(dev_t, struct fd_formb *, struct proc *);
|
|
|
|
|
|
#define DEVIDLE 0
|
|
#define FINDWORK 1
|
|
#define DOSEEK 2
|
|
#define SEEKCOMPLETE 3
|
|
#define IOCOMPLETE 4
|
|
#define RECALCOMPLETE 5
|
|
#define STARTRECAL 6
|
|
#define RESETCTLR 7
|
|
#define SEEKWAIT 8
|
|
#define RECALWAIT 9
|
|
#define MOTORWAIT 10
|
|
#define IOTIMEDOUT 11
|
|
|
|
#ifdef DEBUG
|
|
char *fdstates[] =
|
|
{
|
|
"DEVIDLE",
|
|
"FINDWORK",
|
|
"DOSEEK",
|
|
"SEEKCOMPLETE",
|
|
"IOCOMPLETE",
|
|
"RECALCOMPLETE",
|
|
"STARTRECAL",
|
|
"RESETCTLR",
|
|
"SEEKWAIT",
|
|
"RECALWAIT",
|
|
"MOTORWAIT",
|
|
"IOTIMEDOUT"
|
|
};
|
|
|
|
/* CAUTION: fd_debug causes huge amounts of logging output */
|
|
int fd_debug = 0;
|
|
#define TRACE0(arg) if(fd_debug) printf(arg)
|
|
#define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2)
|
|
#else /* DEBUG */
|
|
#define TRACE0(arg)
|
|
#define TRACE1(arg1, arg2)
|
|
#endif /* DEBUG */
|
|
|
|
struct isa_device *fdcdevs[NFDC];
|
|
|
|
/*
|
|
* Provide hw.devconf information.
|
|
*/
|
|
static int
|
|
fd_externalize(struct proc *p, struct kern_devconf *kdc, void *userp, size_t len)
|
|
{
|
|
return disk_externalize(fd_data[kdc->kdc_unit].fdsu, userp, &len);
|
|
}
|
|
|
|
static int
|
|
fdc_externalize(struct proc *p, struct kern_devconf *kdc, void *userp, size_t len)
|
|
{
|
|
return isa_externalize(fdcdevs[kdc->kdc_unit], userp, &len);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* autoconfiguration stuff */
|
|
/****************************************************************************/
|
|
struct isa_driver fdcdriver = {
|
|
fdprobe, fdattach, "fdc",
|
|
};
|
|
|
|
/*
|
|
* probe for existance of controller
|
|
*/
|
|
static int
|
|
fdprobe(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
fdcu_t fdcu = dev->id_unit;
|
|
if(fdc_data[fdcu].flags & FDC_ATTACHED)
|
|
{
|
|
printf("fdc: same unit (%d) used multiple times\n", fdcu);
|
|
return 0;
|
|
}
|
|
|
|
fdcdevs[fdcu] = dev;
|
|
fdc_data[fdcu].baseport = dev->id_iobase;
|
|
|
|
/* First - lets reset the floppy controller */
|
|
outb(dev->id_iobase+FDOUT, 0);
|
|
DELAY(100);
|
|
outb(dev->id_iobase+FDOUT, FDO_FRST);
|
|
|
|
/* see if it can handle a command */
|
|
if (out_fdc(fdcu, NE7CMD_SPECIFY) < 0)
|
|
{
|
|
return(0);
|
|
}
|
|
out_fdc(fdcu, NE7_SPEC_1(3, 240));
|
|
out_fdc(fdcu, NE7_SPEC_2(2, 0));
|
|
return (IO_FDCSIZE);
|
|
}
|
|
|
|
/*
|
|
* wire controller into system, look for floppy units
|
|
*/
|
|
static int
|
|
fdattach(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
unsigned fdt;
|
|
fdu_t fdu;
|
|
fdcu_t fdcu = dev->id_unit;
|
|
fdc_p fdc = fdc_data + fdcu;
|
|
fd_p fd;
|
|
int fdsu, st0, i;
|
|
struct isa_device *fdup;
|
|
|
|
fdc_registerdev(dev);
|
|
|
|
fdc->fdcu = fdcu;
|
|
fdc->flags |= FDC_ATTACHED;
|
|
fdc->dmachan = dev->id_drq;
|
|
fdc->state = DEVIDLE;
|
|
/* reset controller, turn motor off, clear fdout mirror reg */
|
|
outb(fdc->baseport + FDOUT, ((fdc->fdout = 0)));
|
|
printf("fdc%d:", fdcu);
|
|
|
|
/* check for each floppy drive */
|
|
for (fdup = isa_biotab_fdc; fdup->id_driver != 0; fdup++) {
|
|
if (fdup->id_iobase != dev->id_iobase)
|
|
continue;
|
|
fdu = fdup->id_unit;
|
|
fd = &fd_data[fdu];
|
|
if (fdu >= (NFD+NFT))
|
|
continue;
|
|
fdsu = fdup->id_physid;
|
|
/* look up what bios thinks we have */
|
|
switch (fdu) {
|
|
case 0: fdt = (rtcin(RTC_FDISKETTE) & 0xf0);
|
|
break;
|
|
case 1: fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0);
|
|
break;
|
|
default: fdt = RTCFDT_NONE;
|
|
break;
|
|
}
|
|
/* is there a unit? */
|
|
if ((fdt == RTCFDT_NONE)
|
|
#if NFT > 0
|
|
|| (fdsu >= DRVS_PER_CTLR)) {
|
|
#else
|
|
) {
|
|
fd->type = NO_TYPE;
|
|
#endif
|
|
#if NFT > 0
|
|
/* If BIOS says no floppy, or > 2nd device */
|
|
/* Probe for and attach a floppy tape. */
|
|
if (ftattach(dev, fdup))
|
|
continue;
|
|
if (fdsu < DRVS_PER_CTLR)
|
|
fd->type = NO_TYPE;
|
|
#endif
|
|
continue;
|
|
}
|
|
|
|
/* select it */
|
|
set_motor(fdcu, fdsu, TURNON);
|
|
DELAY(1000000); /* 1 sec */
|
|
out_fdc(fdcu, NE7CMD_SENSED);
|
|
out_fdc(fdcu, fdsu);
|
|
if(in_fdc(fdcu) & NE7_ST3_T0) {
|
|
/* if at track 0, first seek inwards */
|
|
out_fdc(fdcu, NE7CMD_SEEK); /* seek some steps... */
|
|
out_fdc(fdcu, fdsu);
|
|
out_fdc(fdcu, 10);
|
|
DELAY(300000); /* ...wait a moment... */
|
|
out_fdc(fdcu, NE7CMD_SENSEI); /* make ctrlr happy */
|
|
(void)in_fdc(fdcu);
|
|
(void)in_fdc(fdcu);
|
|
}
|
|
for(i = 0; i < 2; i++) {
|
|
/*
|
|
* we must recalibrate twice, just in case the
|
|
* heads have been beyond cylinder 76, since most
|
|
* FDCs still barf when attempting to recalibrate
|
|
* more than 77 steps
|
|
*/
|
|
out_fdc(fdcu, NE7CMD_RECAL); /* go back to 0 */
|
|
out_fdc(fdcu, fdsu);
|
|
/* a second being enough for full stroke seek */
|
|
DELAY(i == 0? 1000000: 300000);
|
|
|
|
/* anything responding? */
|
|
out_fdc(fdcu, NE7CMD_SENSEI);
|
|
st0 = in_fdc(fdcu);
|
|
(void)in_fdc(fdcu);
|
|
|
|
if ((st0 & NE7_ST0_EC) == 0)
|
|
break; /* already probed succesfully */
|
|
}
|
|
|
|
set_motor(fdcu, fdsu, TURNOFF);
|
|
|
|
if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */
|
|
continue;
|
|
|
|
fd->track = -2;
|
|
fd->fdc = fdc;
|
|
fd->fdsu = fdsu;
|
|
fd->options = 0;
|
|
printf(" [%d: fd%d: ", fdsu, fdu);
|
|
|
|
switch (fdt) {
|
|
case RTCFDT_12M:
|
|
printf("1.2MB 5.25in]");
|
|
fd->type = FD_1200;
|
|
break;
|
|
case RTCFDT_144M:
|
|
printf("1.44MB 3.5in]");
|
|
fd->type = FD_1440;
|
|
break;
|
|
case RTCFDT_360K:
|
|
printf("360KB 5.25in]");
|
|
fd->type = FD_360;
|
|
break;
|
|
case RTCFDT_720K:
|
|
printf("720KB 3.5in]");
|
|
fd->type = FD_720;
|
|
break;
|
|
default:
|
|
printf("unknown]");
|
|
fd->type = NO_TYPE;
|
|
break;
|
|
}
|
|
fd_registerdev(fdcu, fdu);
|
|
if(dk_ndrive < DK_NDRIVE) {
|
|
sprintf(dk_names[dk_ndrive], "fd%d", fdu);
|
|
dk_wpms[dk_ndrive] = (500 * 1024 / 2) / 1000;
|
|
fd->dkunit = dk_ndrive++;
|
|
} else {
|
|
fd->dkunit = -1;
|
|
}
|
|
}
|
|
printf("\n");
|
|
|
|
return (1);
|
|
}
|
|
|
|
int
|
|
fdsize(dev)
|
|
dev_t dev;
|
|
{
|
|
return(0);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* motor control stuff */
|
|
/* remember to not deselect the drive we're working on */
|
|
/****************************************************************************/
|
|
static void
|
|
set_motor(fdcu, fdsu, turnon)
|
|
fdcu_t fdcu;
|
|
int fdsu;
|
|
int turnon;
|
|
{
|
|
int fdout = fdc_data[fdcu].fdout;
|
|
int needspecify = 0;
|
|
|
|
if(turnon) {
|
|
fdout &= ~FDO_FDSEL;
|
|
fdout |= (FDO_MOEN0 << fdsu) + fdsu;
|
|
} else
|
|
fdout &= ~(FDO_MOEN0 << fdsu);
|
|
|
|
if(!turnon
|
|
&& (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0)
|
|
/* gonna turn off the last drive, put FDC to bed */
|
|
fdout &= ~ (FDO_FRST|FDO_FDMAEN);
|
|
else {
|
|
/* make sure controller is selected and specified */
|
|
if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0)
|
|
needspecify = 1;
|
|
fdout |= (FDO_FRST|FDO_FDMAEN);
|
|
}
|
|
|
|
outb(fdc_data[fdcu].baseport+FDOUT, fdout);
|
|
fdc_data[fdcu].fdout = fdout;
|
|
TRACE1("[0x%x->FDOUT]", fdout);
|
|
|
|
if(needspecify) {
|
|
/*
|
|
* special case: since we have just woken up the FDC
|
|
* from its sleep, we silently assume the command will
|
|
* be accepted, and do not test for a timeout
|
|
*/
|
|
out_fdc(fdcu, NE7CMD_SPECIFY);
|
|
out_fdc(fdcu, NE7_SPEC_1(3, 240));
|
|
out_fdc(fdcu, NE7_SPEC_2(2, 0));
|
|
}
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
fd_turnoff(void *arg1)
|
|
{
|
|
fdu_t fdu = (fdu_t)arg1;
|
|
int s;
|
|
|
|
fd_p fd = fd_data + fdu;
|
|
s = splbio();
|
|
fd->flags &= ~FD_MOTOR;
|
|
set_motor(fd->fdc->fdcu, fd->fdsu, TURNOFF);
|
|
splx(s);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
fd_motor_on(void *arg1)
|
|
{
|
|
fdu_t fdu = (fdu_t)arg1;
|
|
int s;
|
|
|
|
fd_p fd = fd_data + fdu;
|
|
s = splbio();
|
|
fd->flags &= ~FD_MOTOR_WAIT;
|
|
if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT))
|
|
{
|
|
fdintr(fd->fdc->fdcu);
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
fd_turnon(fdu)
|
|
fdu_t fdu;
|
|
{
|
|
fd_p fd = fd_data + fdu;
|
|
if(!(fd->flags & FD_MOTOR))
|
|
{
|
|
fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT);
|
|
set_motor(fd->fdc->fdcu, fd->fdsu, TURNON);
|
|
timeout(fd_motor_on, (caddr_t)fdu, hz); /* in 1 sec its ok */
|
|
}
|
|
}
|
|
|
|
static void
|
|
fdc_reset(fdc)
|
|
fdc_p fdc;
|
|
{
|
|
fdcu_t fdcu = fdc->fdcu;
|
|
|
|
/* Try a reset, keep motor on */
|
|
outb(fdc->baseport + FDOUT, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
|
|
TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN));
|
|
DELAY(100);
|
|
/* enable FDC, but defer interrupts a moment */
|
|
outb(fdc->baseport + FDOUT, fdc->fdout & ~FDO_FDMAEN);
|
|
TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN);
|
|
DELAY(100);
|
|
outb(fdc->baseport + FDOUT, fdc->fdout);
|
|
TRACE1("[0x%x->FDOUT]", fdc->fdout);
|
|
|
|
/* after a reset, silently believe the FDC will accept commands */
|
|
out_fdc(fdcu, NE7CMD_SPECIFY);
|
|
out_fdc(fdcu, NE7_SPEC_1(3, 240));
|
|
out_fdc(fdcu, NE7_SPEC_2(2, 0));
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* fdc in/out */
|
|
/****************************************************************************/
|
|
int
|
|
in_fdc(fdcu)
|
|
fdcu_t fdcu;
|
|
{
|
|
int baseport = fdc_data[fdcu].baseport;
|
|
int i, j = 100000;
|
|
while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM))
|
|
!= (NE7_DIO|NE7_RQM) && j-- > 0)
|
|
if (i == NE7_RQM) return -1;
|
|
if (j <= 0)
|
|
return(-1);
|
|
#ifdef DEBUG
|
|
i = inb(baseport+FDDATA);
|
|
TRACE1("[FDDATA->0x%x]", (unsigned char)i);
|
|
return(i);
|
|
#else
|
|
return inb(baseport+FDDATA);
|
|
#endif
|
|
}
|
|
|
|
int
|
|
out_fdc(fdcu, x)
|
|
fdcu_t fdcu;
|
|
int x;
|
|
{
|
|
int baseport = fdc_data[fdcu].baseport;
|
|
int i;
|
|
|
|
/* Check that the direction bit is set */
|
|
i = 100000;
|
|
while ((inb(baseport+FDSTS) & NE7_DIO) && i-- > 0);
|
|
if (i <= 0) return (-1); /* Floppy timed out */
|
|
|
|
/* Check that the floppy controller is ready for a command */
|
|
i = 100000;
|
|
while ((inb(baseport+FDSTS) & NE7_RQM) == 0 && i-- > 0);
|
|
if (i <= 0) return (-1); /* Floppy timed out */
|
|
|
|
/* Send the command and return */
|
|
outb(baseport+FDDATA, x);
|
|
TRACE1("[0x%x->FDDATA]", x);
|
|
return (0);
|
|
}
|
|
|
|
/****************************************************************************/
|
|
/* fdopen/fdclose */
|
|
/****************************************************************************/
|
|
int
|
|
Fdopen(dev, flags)
|
|
dev_t dev;
|
|
int flags;
|
|
{
|
|
fdu_t fdu = FDUNIT(minor(dev));
|
|
int type = FDTYPE(minor(dev));
|
|
fdc_p fdc;
|
|
int st3;
|
|
|
|
#if NFT > 0
|
|
/* check for a tape open */
|
|
if (type & F_TAPE_TYPE)
|
|
return(ftopen(dev, flags));
|
|
#endif
|
|
/* check bounds */
|
|
if (fdu >= NFD)
|
|
return(ENXIO);
|
|
fdc = fd_data[fdu].fdc;
|
|
if ((fdc == NULL) || (fd_data[fdu].type == NO_TYPE))
|
|
return(ENXIO);
|
|
if (type > NUMDENS)
|
|
return(ENXIO);
|
|
if (type == 0)
|
|
type = fd_data[fdu].type;
|
|
else {
|
|
if (type != fd_data[fdu].type) {
|
|
switch (fd_data[fdu].type) {
|
|
case FD_360:
|
|
return(ENXIO);
|
|
case FD_720:
|
|
if ( type != FD_820
|
|
&& type != FD_800
|
|
)
|
|
return(ENXIO);
|
|
break;
|
|
case FD_1200:
|
|
switch (type) {
|
|
case FD_1480:
|
|
type = FD_1480in5_25;
|
|
break;
|
|
case FD_1440:
|
|
type = FD_1440in5_25;
|
|
break;
|
|
case FD_820:
|
|
type = FD_820in5_25;
|
|
break;
|
|
case FD_800:
|
|
type = FD_800in5_25;
|
|
break;
|
|
case FD_720:
|
|
type = FD_720in5_25;
|
|
break;
|
|
case FD_360:
|
|
type = FD_360in5_25;
|
|
break;
|
|
default:
|
|
return(ENXIO);
|
|
}
|
|
break;
|
|
case FD_1440:
|
|
if ( type != FD_1720
|
|
&& type != FD_1480
|
|
&& type != FD_1200
|
|
&& type != FD_820
|
|
&& type != FD_800
|
|
&& type != FD_720
|
|
)
|
|
return(ENXIO);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* select it */
|
|
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNON);
|
|
|
|
if (flags & FWRITE) {
|
|
/* Check to make sure the diskette */
|
|
/* is writable */
|
|
out_fdc(fdc->fdcu, NE7CMD_SENSED);
|
|
out_fdc(fdc->fdcu, fdu);
|
|
st3 = in_fdc(fdc->fdcu);
|
|
if(st3 & NE7_ST3_WP) {
|
|
printf("fd%d: write protected\n", fdu);
|
|
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
|
|
return(EPERM);
|
|
}
|
|
}
|
|
|
|
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
|
|
|
|
fd_data[fdu].ft = fd_types + type - 1;
|
|
fd_data[fdu].flags |= FD_OPEN;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fdclose(dev, flags)
|
|
dev_t dev;
|
|
int flags;
|
|
{
|
|
fdu_t fdu = FDUNIT(minor(dev));
|
|
|
|
#if NFT > 0
|
|
int type = FDTYPE(minor(dev));
|
|
|
|
if (type & F_TAPE_TYPE)
|
|
return ftclose(dev, flags);
|
|
#endif
|
|
fd_data[fdu].flags &= ~FD_OPEN;
|
|
fd_data[fdu].options &= ~FDOPT_NORETRY;
|
|
return(0);
|
|
}
|
|
|
|
|
|
/****************************************************************************/
|
|
/* fdstrategy */
|
|
/****************************************************************************/
|
|
void
|
|
fdstrategy(struct buf *bp)
|
|
{
|
|
register struct buf *dp;
|
|
long nblocks, blknum;
|
|
int s;
|
|
fdcu_t fdcu;
|
|
fdu_t fdu;
|
|
fdc_p fdc;
|
|
fd_p fd;
|
|
size_t fdblk;
|
|
|
|
fdu = FDUNIT(minor(bp->b_dev));
|
|
fd = &fd_data[fdu];
|
|
fdc = fd->fdc;
|
|
fdcu = fdc->fdcu;
|
|
fdblk = 128 << (fd->ft->secsize);
|
|
|
|
#if NFT > 0
|
|
if (FDTYPE(minor(bp->b_dev)) & F_TAPE_TYPE) {
|
|
/* ft tapes do not (yet) support strategy i/o */
|
|
bp->b_error = ENXIO;
|
|
bp->b_flags |= B_ERROR;
|
|
goto bad;
|
|
}
|
|
/* check for controller already busy with tape */
|
|
if (fdc->flags & FDC_TAPE_BUSY) {
|
|
bp->b_error = EBUSY;
|
|
bp->b_flags |= B_ERROR;
|
|
goto bad;
|
|
}
|
|
#endif
|
|
if (!(bp->b_flags & B_FORMAT)) {
|
|
if ((fdu >= NFD) || (bp->b_blkno < 0)) {
|
|
printf("fdstrat: fdu = %d, blkno = %lu, bcount = %ld\n",
|
|
fdu, (u_long)bp->b_blkno, bp->b_bcount);
|
|
bp->b_error = EINVAL;
|
|
bp->b_flags |= B_ERROR;
|
|
goto bad;
|
|
}
|
|
if ((bp->b_bcount % fdblk) != 0) {
|
|
bp->b_error = EINVAL;
|
|
bp->b_flags |= B_ERROR;
|
|
goto bad;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set up block calculations.
|
|
*/
|
|
blknum = (unsigned long) bp->b_blkno * DEV_BSIZE/fdblk;
|
|
nblocks = fd->ft->size;
|
|
if (blknum + (bp->b_bcount / fdblk) > nblocks) {
|
|
if (blknum == nblocks) {
|
|
bp->b_resid = bp->b_bcount;
|
|
} else {
|
|
bp->b_error = ENOSPC;
|
|
bp->b_flags |= B_ERROR;
|
|
}
|
|
goto bad;
|
|
}
|
|
bp->b_cylin = blknum / (fd->ft->sectrac * fd->ft->heads);
|
|
dp = &(fdc->head);
|
|
s = splbio();
|
|
disksort(dp, bp);
|
|
untimeout(fd_turnoff, (caddr_t)fdu); /* a good idea */
|
|
fdstart(fdcu);
|
|
splx(s);
|
|
return;
|
|
|
|
bad:
|
|
biodone(bp);
|
|
}
|
|
|
|
/***************************************************************\
|
|
* fdstart *
|
|
* We have just queued something.. if the controller is not busy *
|
|
* then simulate the case where it has just finished a command *
|
|
* So that it (the interrupt routine) looks on the queue for more*
|
|
* work to do and picks up what we just added. *
|
|
* If the controller is already busy, we need do nothing, as it *
|
|
* will pick up our work when the present work completes *
|
|
\***************************************************************/
|
|
static void
|
|
fdstart(fdcu)
|
|
fdcu_t fdcu;
|
|
{
|
|
int s;
|
|
|
|
s = splbio();
|
|
if(fdc_data[fdcu].state == DEVIDLE)
|
|
{
|
|
fdintr(fdcu);
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
fd_timeout(void *arg1)
|
|
{
|
|
fdcu_t fdcu = (fdcu_t)arg1;
|
|
fdu_t fdu = fdc_data[fdcu].fdu;
|
|
int baseport = fdc_data[fdcu].baseport;
|
|
struct buf *dp, *bp;
|
|
int s;
|
|
|
|
dp = &fdc_data[fdcu].head;
|
|
bp = dp->b_actf;
|
|
|
|
/*
|
|
* Due to IBM's brain-dead design, the FDC has a faked ready
|
|
* signal, hardwired to ready == true. Thus, any command
|
|
* issued if there's no diskette in the drive will _never_
|
|
* complete, and must be aborted by resetting the FDC.
|
|
* Many thanks, Big Blue!
|
|
*/
|
|
|
|
s = splbio();
|
|
|
|
TRACE1("fd%d[fd_timeout()]", fdu);
|
|
/* See if the controller is still busy (patiently awaiting data) */
|
|
if(((inb(baseport + FDSTS)) & (NE7_CB|NE7_RQM)) == NE7_CB)
|
|
{
|
|
TRACE1("[FDSTS->0x%x]", inb(baseport + FDSTS));
|
|
/* yup, it is; kill it now */
|
|
fdc_reset(&fdc_data[fdcu]);
|
|
printf("fd%d: Operation timeout\n", fdu);
|
|
}
|
|
|
|
if (bp)
|
|
{
|
|
retrier(fdcu);
|
|
fdc_data[fdcu].status[0] = NE7_ST0_IC_RC;
|
|
fdc_data[fdcu].state = IOTIMEDOUT;
|
|
if( fdc_data[fdcu].retry < 6)
|
|
fdc_data[fdcu].retry = 6;
|
|
}
|
|
else
|
|
{
|
|
fdc_data[fdcu].fd = (fd_p) 0;
|
|
fdc_data[fdcu].fdu = -1;
|
|
fdc_data[fdcu].state = DEVIDLE;
|
|
}
|
|
fdintr(fdcu);
|
|
splx(s);
|
|
}
|
|
|
|
/* just ensure it has the right spl */
|
|
/* ARGSUSED */
|
|
static void
|
|
fd_pseudointr(void *arg1)
|
|
{
|
|
fdcu_t fdcu = (fdcu_t)arg1;
|
|
int s;
|
|
|
|
s = splbio();
|
|
fdintr(fdcu);
|
|
splx(s);
|
|
}
|
|
|
|
/***********************************************************************\
|
|
* fdintr *
|
|
* keep calling the state machine until it returns a 0 *
|
|
* ALWAYS called at SPLBIO *
|
|
\***********************************************************************/
|
|
void
|
|
fdintr(fdcu_t fdcu)
|
|
{
|
|
fdc_p fdc = fdc_data + fdcu;
|
|
#if NFT > 0
|
|
fdu_t fdu = fdc->fdu;
|
|
|
|
if (fdc->flags & FDC_TAPE_BUSY)
|
|
(ftintr(fdu));
|
|
else
|
|
#endif
|
|
while(fdstate(fdcu, fdc))
|
|
;
|
|
}
|
|
|
|
/***********************************************************************\
|
|
* The controller state machine. *
|
|
* if it returns a non zero value, it should be called again immediatly *
|
|
\***********************************************************************/
|
|
static int
|
|
fdstate(fdcu, fdc)
|
|
fdcu_t fdcu;
|
|
fdc_p fdc;
|
|
{
|
|
int read, format, head, sec = 0, i = 0, sectrac, st0, cyl, st3;
|
|
unsigned long blknum;
|
|
fdu_t fdu = fdc->fdu;
|
|
fd_p fd;
|
|
register struct buf *dp, *bp;
|
|
struct fd_formb *finfo = NULL;
|
|
size_t fdblk;
|
|
|
|
dp = &(fdc->head);
|
|
bp = dp->b_actf;
|
|
if(!bp)
|
|
{
|
|
/***********************************************\
|
|
* nothing left for this controller to do *
|
|
* Force into the IDLE state, *
|
|
\***********************************************/
|
|
fdc->state = DEVIDLE;
|
|
if(fdc->fd)
|
|
{
|
|
printf("unexpected valid fd pointer (fdu = %d)\n",
|
|
fdc->fdu);
|
|
fdc->fd = (fd_p) 0;
|
|
fdc->fdu = -1;
|
|
}
|
|
TRACE1("[fdc%d IDLE]", fdcu);
|
|
return(0);
|
|
}
|
|
fdu = FDUNIT(minor(bp->b_dev));
|
|
fd = fd_data + fdu;
|
|
fdblk = 128 << fd->ft->secsize;
|
|
if (fdc->fd && (fd != fdc->fd))
|
|
{
|
|
printf("confused fd pointers\n");
|
|
}
|
|
read = bp->b_flags & B_READ;
|
|
format = bp->b_flags & B_FORMAT;
|
|
if(format)
|
|
finfo = (struct fd_formb *)bp->b_un.b_addr;
|
|
TRACE1("fd%d", fdu);
|
|
TRACE1("[%s]", fdstates[fdc->state]);
|
|
TRACE1("(0x%x)", fd->flags);
|
|
untimeout(fd_turnoff, (caddr_t)fdu);
|
|
timeout(fd_turnoff, (caddr_t)fdu, 4 * hz);
|
|
switch (fdc->state)
|
|
{
|
|
case DEVIDLE:
|
|
case FINDWORK: /* we have found new work */
|
|
fdc->retry = 0;
|
|
fd->skip = 0;
|
|
fdc->fd = fd;
|
|
fdc->fdu = fdu;
|
|
outb(fdc->baseport+FDCTL, fd->ft->trans);
|
|
TRACE1("[0x%x->FDCTL]", fd->ft->trans);
|
|
/*******************************************************\
|
|
* If the next drive has a motor startup pending, then *
|
|
* it will start up in it's own good time *
|
|
\*******************************************************/
|
|
if(fd->flags & FD_MOTOR_WAIT)
|
|
{
|
|
fdc->state = MOTORWAIT;
|
|
return(0); /* come back later */
|
|
}
|
|
/*******************************************************\
|
|
* Maybe if it's not starting, it SHOULD be starting *
|
|
\*******************************************************/
|
|
if (!(fd->flags & FD_MOTOR))
|
|
{
|
|
fdc->state = MOTORWAIT;
|
|
fd_turnon(fdu);
|
|
return(0);
|
|
}
|
|
else /* at least make sure we are selected */
|
|
{
|
|
set_motor(fdcu, fd->fdsu, TURNON);
|
|
}
|
|
fdc->state = DOSEEK;
|
|
break;
|
|
case DOSEEK:
|
|
if (bp->b_cylin == fd->track)
|
|
{
|
|
fdc->state = SEEKCOMPLETE;
|
|
break;
|
|
}
|
|
if(out_fdc(fdcu, NE7CMD_SEEK) < 0) /* Seek function */
|
|
{
|
|
/*
|
|
* seek command not accepted, looks like
|
|
* the FDC went off to the Saints...
|
|
*/
|
|
fdc->retry = 6; /* try a reset */
|
|
return(retrier(fdcu));
|
|
}
|
|
out_fdc(fdcu, fd->fdsu); /* Drive number */
|
|
out_fdc(fdcu, bp->b_cylin * fd->ft->steptrac);
|
|
fd->track = -2;
|
|
fdc->state = SEEKWAIT;
|
|
return(0); /* will return later */
|
|
case SEEKWAIT:
|
|
/* allow heads to settle */
|
|
timeout(fd_pseudointr, (caddr_t)fdcu, hz / 32);
|
|
fdc->state = SEEKCOMPLETE;
|
|
return(0); /* will return later */
|
|
case SEEKCOMPLETE : /* SEEK DONE, START DMA */
|
|
/* Make sure seek really happened*/
|
|
if(fd->track == -2)
|
|
{
|
|
int descyl = bp->b_cylin * fd->ft->steptrac;
|
|
do {
|
|
out_fdc(fdcu, NE7CMD_SENSEI);
|
|
st0 = in_fdc(fdcu);
|
|
cyl = in_fdc(fdcu);
|
|
/*
|
|
* if this was a "ready changed" interrupt,
|
|
* fetch status again (can happen after
|
|
* enabling controller from reset state)
|
|
*/
|
|
} while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
|
|
if (0 == descyl)
|
|
{
|
|
/*
|
|
* seek to cyl 0 requested; make sure we are
|
|
* really there
|
|
*/
|
|
out_fdc(fdcu, NE7CMD_SENSED);
|
|
out_fdc(fdcu, fdu);
|
|
st3 = in_fdc(fdcu);
|
|
if ((st3 & NE7_ST3_T0) == 0) {
|
|
printf(
|
|
"fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n",
|
|
fdu, st3, NE7_ST3BITS);
|
|
if(fdc->retry < 3)
|
|
fdc->retry = 3;
|
|
return(retrier(fdcu));
|
|
}
|
|
}
|
|
if (cyl != descyl)
|
|
{
|
|
printf(
|
|
"fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n",
|
|
fdu, descyl, cyl, st0, NE7_ST0BITS);
|
|
return(retrier(fdcu));
|
|
}
|
|
}
|
|
|
|
fd->track = bp->b_cylin;
|
|
if(format)
|
|
fd->skip = (char *)&(finfo->fd_formb_cylno(0))
|
|
- (char *)finfo;
|
|
isa_dmastart(bp->b_flags, bp->b_un.b_addr+fd->skip,
|
|
format ? bp->b_bcount : fdblk, fdc->dmachan);
|
|
blknum = (unsigned long)bp->b_blkno*DEV_BSIZE/fdblk
|
|
+ fd->skip/fdblk;
|
|
sectrac = fd->ft->sectrac;
|
|
sec = blknum % (sectrac * fd->ft->heads);
|
|
head = sec / sectrac;
|
|
sec = sec % sectrac + 1;
|
|
fd->hddrv = ((head&1)<<2)+fdu;
|
|
|
|
if(format || !read)
|
|
{
|
|
/* make sure the drive is writable */
|
|
if(out_fdc(fdcu, NE7CMD_SENSED) < 0)
|
|
{
|
|
/* stuck controller? */
|
|
fdc->retry = 6; /* reset the beast */
|
|
return(retrier(fdcu));
|
|
}
|
|
out_fdc(fdcu, fdu);
|
|
st3 = in_fdc(fdcu);
|
|
if(st3 & NE7_ST3_WP)
|
|
{
|
|
/*
|
|
* XXX YES! this is ugly.
|
|
* in order to force the current operation
|
|
* to fail, we will have to fake an FDC
|
|
* error - all error handling is done
|
|
* by the retrier()
|
|
*/
|
|
fdc->status[0] = NE7_ST0_IC_AT;
|
|
fdc->status[1] = NE7_ST1_NW;
|
|
fdc->status[2] = 0;
|
|
fdc->status[3] = fd->track;
|
|
fdc->status[4] = head;
|
|
fdc->status[5] = sec;
|
|
fdc->retry = 8; /* break out immediately */
|
|
fdc->state = IOTIMEDOUT; /* not really... */
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
if(format)
|
|
{
|
|
/* formatting */
|
|
if(out_fdc(fdcu, NE7CMD_FORMAT) < 0)
|
|
{
|
|
/* controller fell over */
|
|
fdc->retry = 6;
|
|
return(retrier(fdcu));
|
|
}
|
|
out_fdc(fdcu, head << 2 | fdu);
|
|
out_fdc(fdcu, finfo->fd_formb_secshift);
|
|
out_fdc(fdcu, finfo->fd_formb_nsecs);
|
|
out_fdc(fdcu, finfo->fd_formb_gaplen);
|
|
out_fdc(fdcu, finfo->fd_formb_fillbyte);
|
|
}
|
|
else
|
|
{
|
|
if ((read && out_fdc(fdcu, NE7CMD_READ) < 0)
|
|
|| (!read /* i.e., write */
|
|
&& out_fdc(fdcu, NE7CMD_WRITE) < 0))
|
|
{
|
|
/* the beast is sleeping again */
|
|
fdc->retry = 6;
|
|
return(retrier(fdcu));
|
|
}
|
|
out_fdc(fdcu, head << 2 | fdu); /* head & unit */
|
|
out_fdc(fdcu, fd->track); /* track */
|
|
out_fdc(fdcu, head);
|
|
out_fdc(fdcu, sec); /* sector XXX +1? */
|
|
out_fdc(fdcu, fd->ft->secsize); /* sector size */
|
|
out_fdc(fdcu, sectrac); /* sectors/track */
|
|
out_fdc(fdcu, fd->ft->gap); /* gap size */
|
|
out_fdc(fdcu, fd->ft->datalen); /* data length */
|
|
}
|
|
fdc->state = IOCOMPLETE;
|
|
timeout(fd_timeout, (caddr_t)fdcu, hz);
|
|
return(0); /* will return later */
|
|
case IOCOMPLETE: /* IO DONE, post-analyze */
|
|
untimeout(fd_timeout, (caddr_t)fdcu);
|
|
for(i=0;i<7;i++)
|
|
{
|
|
fdc->status[i] = in_fdc(fdcu);
|
|
}
|
|
fdc->state = IOTIMEDOUT;
|
|
/* FALLTHROUGH */
|
|
case IOTIMEDOUT:
|
|
isa_dmadone(bp->b_flags, bp->b_un.b_addr+fd->skip,
|
|
format ? bp->b_bcount : fdblk, fdc->dmachan);
|
|
if (fdc->status[0] & NE7_ST0_IC)
|
|
{
|
|
if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
|
|
&& fdc->status[1] & NE7_ST1_OR) {
|
|
/*
|
|
* DMA overrun. Someone hogged the bus
|
|
* and didn't release it in time for the
|
|
* next FDC transfer.
|
|
* Just restart it, don't increment retry
|
|
* count. (vak)
|
|
*/
|
|
fdc->state = SEEKCOMPLETE;
|
|
return (1);
|
|
}
|
|
else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV
|
|
&& fdc->retry < 6)
|
|
fdc->retry = 6; /* force a reset */
|
|
else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT
|
|
&& fdc->status[2] & NE7_ST2_WC
|
|
&& fdc->retry < 3)
|
|
fdc->retry = 3; /* force recalibrate */
|
|
return(retrier(fdcu));
|
|
}
|
|
/* All OK */
|
|
fd->skip += fdblk;
|
|
if (!format && fd->skip < bp->b_bcount)
|
|
{
|
|
/* set up next transfer */
|
|
blknum = (unsigned long)bp->b_blkno*DEV_BSIZE/fdblk
|
|
+ fd->skip/fdblk;
|
|
bp->b_cylin =
|
|
(blknum / (fd->ft->sectrac * fd->ft->heads));
|
|
fdc->state = DOSEEK;
|
|
}
|
|
else
|
|
{
|
|
/* ALL DONE */
|
|
fd->skip = 0;
|
|
bp->b_resid = 0;
|
|
dp->b_actf = bp->b_actf;
|
|
biodone(bp);
|
|
fdc->fd = (fd_p) 0;
|
|
fdc->fdu = -1;
|
|
fdc->state = FINDWORK;
|
|
}
|
|
return(1);
|
|
case RESETCTLR:
|
|
fdc_reset(fdc);
|
|
fdc->retry++;
|
|
fdc->state = STARTRECAL;
|
|
break;
|
|
case STARTRECAL:
|
|
if(out_fdc(fdcu, NE7CMD_RECAL) < 0) /* Recalibrate Function */
|
|
{
|
|
/* arrgl */
|
|
fdc->retry = 6;
|
|
return(retrier(fdcu));
|
|
}
|
|
out_fdc(fdcu, fdu);
|
|
fdc->state = RECALWAIT;
|
|
return(0); /* will return later */
|
|
case RECALWAIT:
|
|
/* allow heads to settle */
|
|
timeout(fd_pseudointr, (caddr_t)fdcu, hz / 32);
|
|
fdc->state = RECALCOMPLETE;
|
|
return(0); /* will return later */
|
|
case RECALCOMPLETE:
|
|
do {
|
|
out_fdc(fdcu, NE7CMD_SENSEI);
|
|
st0 = in_fdc(fdcu);
|
|
cyl = in_fdc(fdcu);
|
|
/*
|
|
* if this was a "ready changed" interrupt,
|
|
* fetch status again (can happen after
|
|
* enabling controller from reset state)
|
|
*/
|
|
} while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC);
|
|
if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0)
|
|
{
|
|
if(fdc->retry > 3)
|
|
/*
|
|
* a recalibrate from beyond cylinder 77
|
|
* will "fail" due to the FDC limitations;
|
|
* since people used to complain much about
|
|
* the failure message, try not logging
|
|
* this one if it seems to be the first
|
|
* time in a line
|
|
*/
|
|
printf("fd%d: recal failed ST0 %b cyl %d\n",
|
|
fdu, st0, NE7_ST0BITS, cyl);
|
|
if(fdc->retry < 3) fdc->retry = 3;
|
|
return(retrier(fdcu));
|
|
}
|
|
fd->track = 0;
|
|
/* Seek (probably) necessary */
|
|
fdc->state = DOSEEK;
|
|
return(1); /* will return immediatly */
|
|
case MOTORWAIT:
|
|
if(fd->flags & FD_MOTOR_WAIT)
|
|
{
|
|
return(0); /* time's not up yet */
|
|
}
|
|
/*
|
|
* since the controller was off, it has lost its
|
|
* idea about the current track it were; thus,
|
|
* recalibrate the bastard
|
|
*/
|
|
fdc->state = STARTRECAL;
|
|
return(1); /* will return immediatly */
|
|
default:
|
|
printf("Unexpected FD int->");
|
|
if(out_fdc(fdcu, NE7CMD_SENSEI) < 0)
|
|
{
|
|
printf("[controller is dead now]\n");
|
|
return(0);
|
|
}
|
|
st0 = in_fdc(fdcu);
|
|
cyl = in_fdc(fdcu);
|
|
printf("ST0 = %x, PCN = %x\n", st0, cyl);
|
|
out_fdc(fdcu, NE7CMD_READID);
|
|
out_fdc(fdcu, fd->fdsu);
|
|
for(i=0;i<7;i++) {
|
|
fdc->status[i] = in_fdc(fdcu);
|
|
}
|
|
if(fdc->status[0] != -1)
|
|
printf("intr status :%lx %lx %lx %lx %lx %lx %lx\n",
|
|
fdc->status[0],
|
|
fdc->status[1],
|
|
fdc->status[2],
|
|
fdc->status[3],
|
|
fdc->status[4],
|
|
fdc->status[5],
|
|
fdc->status[6] );
|
|
else
|
|
printf("FDC timed out\n");
|
|
return(0);
|
|
}
|
|
return(1); /* Come back immediatly to new state */
|
|
}
|
|
|
|
static int
|
|
retrier(fdcu)
|
|
fdcu_t fdcu;
|
|
{
|
|
fdc_p fdc = fdc_data + fdcu;
|
|
register struct buf *dp, *bp;
|
|
|
|
dp = &(fdc->head);
|
|
bp = dp->b_actf;
|
|
|
|
if(fd_data[FDUNIT(minor(bp->b_dev))].options & FDOPT_NORETRY)
|
|
goto fail;
|
|
switch(fdc->retry)
|
|
{
|
|
case 0: case 1: case 2:
|
|
fdc->state = SEEKCOMPLETE;
|
|
break;
|
|
case 3: case 4: case 5:
|
|
fdc->state = STARTRECAL;
|
|
break;
|
|
case 6:
|
|
fdc->state = RESETCTLR;
|
|
break;
|
|
case 7:
|
|
break;
|
|
default:
|
|
fail:
|
|
{
|
|
dev_t sav_b_dev = bp->b_dev;
|
|
/* Trick diskerr */
|
|
bp->b_dev = makedev(major(bp->b_dev),
|
|
(FDUNIT(minor(bp->b_dev))<<3)|RAW_PART);
|
|
diskerr(bp, "fd", "hard error", LOG_PRINTF,
|
|
fdc->fd->skip / DEV_BSIZE,
|
|
(struct disklabel *)NULL);
|
|
bp->b_dev = sav_b_dev;
|
|
printf(" (ST0 %b ", fdc->status[0], NE7_ST0BITS);
|
|
printf(" ST1 %b ", fdc->status[1], NE7_ST1BITS);
|
|
printf(" ST2 %b ", fdc->status[2], NE7_ST2BITS);
|
|
printf("cyl %ld hd %ld sec %ld)\n",
|
|
fdc->status[3], fdc->status[4], fdc->status[5]);
|
|
}
|
|
bp->b_flags |= B_ERROR;
|
|
bp->b_error = EIO;
|
|
bp->b_resid = bp->b_bcount - fdc->fd->skip;
|
|
dp->b_actf = bp->b_actf;
|
|
fdc->fd->skip = 0;
|
|
biodone(bp);
|
|
fdc->state = FINDWORK;
|
|
fdc->fd = (fd_p) 0;
|
|
fdc->fdu = -1;
|
|
/* XXX abort current command, if any. */
|
|
return(1);
|
|
}
|
|
fdc->retry++;
|
|
return(1);
|
|
}
|
|
|
|
static int
|
|
fdformat(dev, finfo, p)
|
|
dev_t dev;
|
|
struct fd_formb *finfo;
|
|
struct proc *p;
|
|
{
|
|
fdu_t fdu;
|
|
fd_p fd;
|
|
|
|
struct buf *bp;
|
|
int rv = 0, s;
|
|
size_t fdblk;
|
|
|
|
fdu = FDUNIT(minor(dev));
|
|
fd = &fd_data[fdu];
|
|
fdblk = 128 << fd->ft->secsize;
|
|
|
|
/* set up a buffer header for fdstrategy() */
|
|
bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT);
|
|
if(bp == 0)
|
|
return ENOBUFS;
|
|
bzero((void *)bp, sizeof(struct buf));
|
|
bp->b_flags = B_BUSY | B_PHYS | B_FORMAT;
|
|
bp->b_proc = p;
|
|
bp->b_dev = dev;
|
|
|
|
/*
|
|
* calculate a fake blkno, so fdstrategy() would initiate a
|
|
* seek to the requested cylinder
|
|
*/
|
|
bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads)
|
|
+ finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE;
|
|
|
|
bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs;
|
|
bp->b_un.b_addr = (caddr_t)finfo;
|
|
|
|
/* now do the format */
|
|
fdstrategy(bp);
|
|
|
|
/* ...and wait for it to complete */
|
|
s = splbio();
|
|
while(!(bp->b_flags & B_DONE))
|
|
{
|
|
rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz);
|
|
if(rv == EWOULDBLOCK)
|
|
break;
|
|
}
|
|
splx(s);
|
|
|
|
if(rv == EWOULDBLOCK)
|
|
/* timed out */
|
|
rv = EIO;
|
|
if(bp->b_flags & B_ERROR)
|
|
rv = bp->b_error;
|
|
biodone(bp);
|
|
free(bp, M_TEMP);
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
*
|
|
* TODO: Think about allocating buffer off stack.
|
|
* Don't pass uncast 0's and NULL's to read/write/setdisklabel().
|
|
* Watch out for NetBSD's different *disklabel() interface.
|
|
*
|
|
*/
|
|
|
|
int
|
|
fdioctl(dev, cmd, addr, flag, p)
|
|
dev_t dev;
|
|
int cmd;
|
|
caddr_t addr;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
fdu_t fdu = FDUNIT(minor(dev));
|
|
fd_p fd = &fd_data[fdu];
|
|
size_t fdblk;
|
|
|
|
struct fd_type *fdt;
|
|
struct disklabel *dl;
|
|
char buffer[DEV_BSIZE];
|
|
int error = 0;
|
|
|
|
#if NFT > 0
|
|
int type = FDTYPE(minor(dev));
|
|
|
|
/* check for a tape ioctl */
|
|
if (type & F_TAPE_TYPE)
|
|
return ftioctl(dev, cmd, addr, flag, p);
|
|
#endif
|
|
|
|
fdblk = 128 << fd->ft->secsize;
|
|
|
|
switch (cmd)
|
|
{
|
|
case DIOCGDINFO:
|
|
bzero(buffer, sizeof (buffer));
|
|
dl = (struct disklabel *)buffer;
|
|
dl->d_secsize = fdblk;
|
|
fdt = fd_data[FDUNIT(minor(dev))].ft;
|
|
dl->d_secpercyl = fdt->size / fdt->tracks;
|
|
dl->d_type = DTYPE_FLOPPY;
|
|
|
|
if (readdisklabel(dev, fdstrategy, dl, NULL, 0) == NULL)
|
|
error = 0;
|
|
else
|
|
error = EINVAL;
|
|
|
|
*(struct disklabel *)addr = *dl;
|
|
break;
|
|
|
|
case DIOCSDINFO:
|
|
if ((flag & FWRITE) == 0)
|
|
error = EBADF;
|
|
break;
|
|
|
|
case DIOCWLABEL:
|
|
if ((flag & FWRITE) == 0)
|
|
error = EBADF;
|
|
break;
|
|
|
|
case DIOCWDINFO:
|
|
if ((flag & FWRITE) == 0)
|
|
{
|
|
error = EBADF;
|
|
break;
|
|
}
|
|
|
|
dl = (struct disklabel *)addr;
|
|
|
|
if ((error =
|
|
setdisklabel ((struct disklabel *)buffer, dl, 0)))
|
|
break;
|
|
|
|
error = writedisklabel(dev, fdstrategy,
|
|
(struct disklabel *)buffer);
|
|
break;
|
|
|
|
case FD_FORM:
|
|
if((flag & FWRITE) == 0)
|
|
error = EBADF; /* must be opened for writing */
|
|
else if(((struct fd_formb *)addr)->format_version !=
|
|
FD_FORMAT_VERSION)
|
|
error = EINVAL; /* wrong version of formatting prog */
|
|
else
|
|
error = fdformat(dev, (struct fd_formb *)addr, p);
|
|
break;
|
|
|
|
case FD_GTYPE: /* get drive type */
|
|
*(struct fd_type *)addr = *fd_data[FDUNIT(minor(dev))].ft;
|
|
break;
|
|
|
|
case FD_STYPE: /* set drive type */
|
|
/* this is considered harmful; only allow for superuser */
|
|
if(suser(p->p_ucred, &p->p_acflag) != 0)
|
|
return EPERM;
|
|
*fd_data[FDUNIT(minor(dev))].ft = *(struct fd_type *)addr;
|
|
break;
|
|
|
|
case FD_GOPTS: /* get drive options */
|
|
*(int *)addr = fd_data[FDUNIT(minor(dev))].options;
|
|
break;
|
|
|
|
case FD_SOPTS: /* set drive options */
|
|
fd_data[FDUNIT(minor(dev))].options = *(int *)addr;
|
|
break;
|
|
|
|
default:
|
|
error = ENOTTY;
|
|
break;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
#endif
|
|
/*
|
|
* Hello emacs, these are the
|
|
* Local Variables:
|
|
* c-indent-level: 8
|
|
* c-continued-statement-offset: 8
|
|
* c-continued-brace-offset: 0
|
|
* c-brace-offset: -8
|
|
* c-brace-imaginary-offset: 0
|
|
* c-argdecl-indent: 8
|
|
* c-label-offset: -8
|
|
* c++-hanging-braces: 1
|
|
* c++-access-specifier-offset: -8
|
|
* c++-empty-arglist-indent: 8
|
|
* c++-friend-offset: 0
|
|
* End:
|
|
*/
|