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-rw-r--r--sys/isa/fd.c1255
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diff --git a/sys/isa/fd.c b/sys/isa/fd.c
new file mode 100644
index 0000000..61e385f9
--- /dev/null
+++ b/sys/isa/fd.c
@@ -0,0 +1,1255 @@
+/*#define DEBUG 1*/
+/*-
+ * 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.
+ *
+ * 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 1.27 1994/08/13 03:49:57 wollman 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/syslog.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/icu.h>
+#include <i386/isa/rtc.h>
+
+#if NFT > 0
+extern int ftopen(), ftintr(), ftattach(), ftclose(), ftioctl();
+#endif
+
+#define b_cylin b_resid
+#define FDBLK 512
+
+/* misuse a flag to identify format operation */
+#define B_FORMAT B_XXX
+
+#define NUMTYPES 14
+#define NUMDENS (NUMTYPES - 6)
+
+/* This 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 (HD, DD */
+ 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 */
+} 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) *
+\***********************************************************************/
+
+#define id_physid id_scsiid /* this biotab field doubles as a field */
+ /* for the physical unit number on the controller */
+
+static int retrier(fdcu_t);
+
+#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"
+};
+
+
+int fd_debug = 1;
+#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 */
+
+static void fdstart(fdcu_t);
+void fdintr(fdcu_t);
+static timeout_t fd_turnoff;
+
+/****************************************************************************/
+/* autoconfiguration stuff */
+/****************************************************************************/
+static int fdprobe(struct isa_device *);
+static int fdattach(struct isa_device *);
+
+struct isa_driver fdcdriver = {
+ fdprobe, fdattach, "fdc",
+};
+
+/*
+ * probe for existance of controller
+ */
+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;
+ }
+
+ 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,0xDF);
+ out_fdc(fdcu,2);
+ return (IO_FDCSIZE);
+}
+
+/*
+ * wire controller into system, look for floppy units
+ */
+int
+fdattach(dev)
+ struct isa_device *dev;
+{
+ unsigned fdt,st0, cyl;
+ int hdr;
+ fdu_t fdu;
+ fdcu_t fdcu = dev->id_unit;
+ fdc_p fdc = fdc_data + fdcu;
+ fd_p fd;
+ int fdsu;
+ struct isa_device *fdup;
+
+ fdc->fdcu = fdcu;
+ fdc->flags |= FDC_ATTACHED;
+ fdc->dmachan = dev->id_drq;
+ fdc->state = DEVIDLE;
+ hdr = 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;
+ }
+
+#ifdef notyet
+ /* select it */
+ fd_turnon1(fdu);
+ spinwait(1000); /* 1 sec */
+ out_fdc(fdcu,NE7CMD_RECAL); /* Recalibrate Function */
+ out_fdc(fdcu,fdsu);
+ spinwait(1000); /* 1 sec */
+
+ /* anything responding */
+ out_fdc(fdcu,NE7CMD_SENSEI);
+ st0 = in_fdc(fdcu);
+ cyl = in_fdc(fdcu);
+ if (st0 & 0xd0)
+ continue;
+
+#endif
+ fd->track = -2;
+ fd->fdc = fdc;
+ fd->fdsu = fdsu;
+ 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_turnoff((caddr_t)fdu);
+ hdr = 1;
+ }
+ printf("\n");
+
+ /* Set transfer to 500kbps */
+ outb(fdc->baseport+fdctl,0); /*XXX*/
+ return 1;
+}
+
+int
+fdsize(dev)
+ dev_t dev;
+{
+ return(0);
+}
+
+/****************************************************************************/
+/* fdstrategy */
+/****************************************************************************/
+void fdstrategy(struct buf *bp)
+{
+ register struct buf *dp,*dp0,*dp1;
+ long nblocks,blknum;
+ int s;
+ fdcu_t fdcu;
+ fdu_t fdu;
+ fdc_p fdc;
+ fd_p fd;
+
+ fdu = FDUNIT(minor(bp->b_dev));
+ fd = &fd_data[fdu];
+ fdc = fd->fdc;
+ fdcu = fdc->fdcu;
+
+#if NFT > 0
+ /* check for controller already busy with tape */
+ if (fdc->flags & FDC_TAPE_BUSY) {
+ bp->b_error = EBUSY;
+ bp->b_flags |= B_ERROR;
+ return;
+ }
+#endif
+ if ((fdu >= NFD) || (bp->b_blkno < 0)) {
+ printf("fdstrat: fdu = %d, blkno = %d, bcount = %d\n",
+ fdu, bp->b_blkno, bp->b_bcount);
+ pg("fd:error in fdstrategy");
+ 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);
+ bp->b_pblkno = bp->b_blkno;
+ 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);
+ return;
+}
+
+/****************************************************************************/
+/* motor control stuff */
+/* remember to not deselect the drive we're working on */
+/****************************************************************************/
+void
+set_motor(fdcu, fdu, reset)
+ fdcu_t fdcu;
+ fdu_t fdu;
+ int reset;
+{
+ int m0,m1;
+ int selunit;
+ fd_p fd;
+ if(fd = fdc_data[fdcu].fd)/* yes an assign! */
+ {
+ selunit = fd->fdsu;
+ }
+ else
+ {
+ selunit = 0;
+ }
+ m0 = fd_data[fdcu * DRVS_PER_CTLR + 0].flags & FD_MOTOR;
+ m1 = fd_data[fdcu * DRVS_PER_CTLR + 1].flags & FD_MOTOR;
+ outb(fdc_data[fdcu].baseport+fdout,
+ selunit
+ | (reset ? 0 : (FDO_FRST|FDO_FDMAEN))
+ | (m0 ? FDO_MOEN0 : 0)
+ | (m1 ? FDO_MOEN1 : 0));
+ TRACE1("[0x%x->fdout]",(
+ selunit
+ | (reset ? 0 : (FDO_FRST|FDO_FDMAEN))
+ | (m0 ? FDO_MOEN0 : 0)
+ | (m1 ? FDO_MOEN1 : 0)));
+}
+
+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,0);
+ splx(s);
+}
+
+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_turnon1(fdu_t);
+
+void
+fd_turnon(fdu)
+ fdu_t fdu;
+{
+ fd_p fd = fd_data + fdu;
+ if(!(fd->flags & FD_MOTOR))
+ {
+ fd_turnon1(fdu);
+ fd->flags |= FD_MOTOR_WAIT;
+ timeout(fd_motor_on, (caddr_t)fdu, hz); /* in 1 sec its ok */
+ }
+}
+
+static void
+fd_turnon1(fdu_t fdu)
+{
+ fd_p fd = fd_data + fdu;
+ fd->flags |= FD_MOTOR;
+ set_motor(fd->fdc->fdcu,fd->fdsu,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;
+
+#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;
+ }
+ }
+ }
+ 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));
+ int type = FDTYPE(minor(dev));
+
+#if NFT > 0
+ if (type & F_TAPE_TYPE)
+ return ftclose(0);
+#endif
+ fd_data[fdu].flags &= ~FD_OPEN;
+ return(0);
+}
+
+
+/***************************************************************\
+* 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;
+{
+ register struct buf *dp,*bp;
+ int s;
+ fdu_t fdu;
+
+ s = splbio();
+ if(fdc_data[fdcu].state == DEVIDLE)
+ {
+ fdintr(fdcu);
+ }
+ splx(s);
+}
+
+static void
+fd_timeout(void *arg1)
+{
+ fdcu_t fdcu = (fdcu_t)arg1;
+ fdu_t fdu = fdc_data[fdcu].fdu;
+ int st0, st3, cyl;
+ struct buf *dp,*bp;
+ int s;
+
+ dp = &fdc_data[fdcu].head;
+ s = splbio();
+ bp = dp->b_actf;
+
+ out_fdc(fdcu,NE7CMD_SENSED);
+ out_fdc(fdcu,fd_data[fdu].hddrv);
+ st3 = in_fdc(fdcu);
+
+ out_fdc(fdcu,NE7CMD_SENSEI);
+ st0 = in_fdc(fdcu);
+ cyl = in_fdc(fdcu);
+ printf("fd%d: Operation timeout ST0 %b cyl %d ST3 %b\n",
+ fdu,
+ st0,
+ NE7_ST0BITS,
+ cyl,
+ st3,
+ NE7_ST3BITS);
+
+ if (bp)
+ {
+ retrier(fdcu);
+ fdc_data[fdcu].status[0] = 0xc0;
+ 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 */
+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 *
+\***********************************************************************/
+int
+fdstate(fdcu, fdc)
+ fdcu_t fdcu;
+ fdc_p fdc;
+{
+ int read, format, head, trac, sec = 0, i = 0, s, sectrac, cyl, st0;
+ unsigned long blknum;
+ fdu_t fdu = fdc->fdu;
+ fd_p fd;
+ register struct buf *dp,*bp;
+ struct fd_formb *finfo = NULL;
+
+ 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;
+ 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);
+ /*******************************************************\
+ * 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,0);
+ }
+ fdc->state = DOSEEK;
+ break;
+ case DOSEEK:
+ if (bp->b_cylin == fd->track)
+ {
+ fdc->state = SEEKCOMPLETE;
+ break;
+ }
+ out_fdc(fdcu,NE7CMD_SEEK); /* Seek function */
+ out_fdc(fdcu,fd->fdsu); /* Drive number */
+ out_fdc(fdcu,bp->b_cylin * fd->ft->steptrac);
+ fd->track = -2;
+ fdc->state = SEEKWAIT;
+ timeout(fd_timeout, (caddr_t)fdcu, 2 * hz);
+ return(0); /* will return later */
+ case SEEKWAIT:
+ untimeout(fd_timeout, (caddr_t)fdcu);
+ /* allow heads to settle */
+ timeout(fd_pseudointr, (caddr_t)fdcu, hz / 50);
+ fdc->state = SEEKCOMPLETE;
+ return(0); /* will return later */
+ break;
+
+ case SEEKCOMPLETE : /* SEEK DONE, START DMA */
+ /* Make sure seek really happened*/
+ if(fd->track == -2)
+ {
+ int descyl = bp->b_cylin * fd->ft->steptrac;
+ out_fdc(fdcu,NE7CMD_SENSEI);
+ i = in_fdc(fdcu);
+ cyl = in_fdc(fdcu);
+ if (cyl != descyl)
+ {
+ printf("fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n",
+ fdu, descyl, cyl, i, 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;
+/*XXX*/ fd->hddrv = ((head&1)<<2)+fdu;
+
+ if(format)
+ {
+ /* formatting */
+ out_fdc(fdcu,/* NE7CMD_FORMAT */ 0x4d);
+ 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); /* READ */
+ }
+ else
+ {
+ out_fdc(fdcu,NE7CMD_WRITE); /* WRITE */
+ }
+ 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, 2 * 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);
+ }
+ case IOTIMEDOUT: /*XXX*/
+ isa_dmadone(bp->b_flags, bp->b_un.b_addr+fd->skip,
+ format ? bp->b_bcount : FDBLK, fdc->dmachan);
+ if (fdc->status[0]&0xF8)
+ {
+ if (fdc->status[1] & 0x10) {
+ /*
+ * Operation not completed in reasonable time.
+ * Just restart it, don't increment retry count.
+ * (vak)
+ */
+ fdc->state = SEEKCOMPLETE;
+ return (1);
+ }
+ 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:
+ /* Try a reset, keep motor on */
+ set_motor(fdcu,fd->fdsu,1);
+ DELAY(100);
+ set_motor(fdcu,fd->fdsu,0);
+ outb(fdc->baseport+fdctl,fd->ft->trans);
+ TRACE1("[0x%x->fdctl]",fd->ft->trans);
+ fdc->retry++;
+ fdc->state = STARTRECAL;
+ break;
+ case STARTRECAL:
+ out_fdc(fdcu,NE7CMD_SPECIFY); /* specify command */
+ out_fdc(fdcu,0xDF);
+ out_fdc(fdcu,2);
+ out_fdc(fdcu,NE7CMD_RECAL); /* Recalibrate Function */
+ 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 / 30);
+ fdc->state = RECALCOMPLETE;
+ return(0); /* will return later */
+ case RECALCOMPLETE:
+ out_fdc(fdcu,NE7CMD_SENSEI);
+ st0 = in_fdc(fdcu);
+ cyl = in_fdc(fdcu);
+ if (cyl != 0)
+ {
+ printf("fd%d: recal failed ST0 %b cyl %d\n", fdu,
+ st0, NE7_ST0BITS, cyl);
+ 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 */
+ }
+ fdc->state = DOSEEK;
+ return(1); /* will return immediatly */
+ default:
+ printf("Unexpected FD int->");
+ out_fdc(fdcu,NE7CMD_SENSEI);
+ st0 = in_fdc(fdcu);
+ cyl = in_fdc(fdcu);
+ printf("ST0 = %lx, PCN = %lx\n",i,sec);
+ out_fdc(fdcu,0x4A);
+ out_fdc(fdcu,fd->fdsu);
+ for(i=0;i<7;i++) {
+ fdc->status[i] = in_fdc(fdcu);
+ }
+ printf("intr status :%lx %lx %lx %lx %lx %lx %lx ",
+ fdc->status[0],
+ fdc->status[1],
+ fdc->status[2],
+ fdc->status[3],
+ fdc->status[4],
+ fdc->status[5],
+ fdc->status[6] );
+ 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;
+
+ 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:
+ {
+ dev_t sav_b_dev = bp->b_dev;
+ /* Trick diskerr */
+ bp->b_dev = makedev(major(bp->b_dev), (FDUNIT(minor(bp->b_dev))<<3)|3);
+ diskerr(bp, "fd", "hard error", LOG_PRINTF,
+ fdc->fd->skip, (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 %d hd %d sec %d)\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;
+
+ fdu = FDUNIT(minor(dev));
+ fd = &fd_data[fdu];
+
+ /* 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 */
+ biodone(bp);
+ rv = EIO;
+ }
+ free(bp, M_TEMP);
+ return rv;
+}
+
+/*
+ * fdioctl() from jc@irbs.UUCP (John Capo)
+ * i386/i386/conf.c needs to have fdioctl() declared and remove the line that
+ * defines fdioctl to be enxio.
+ *
+ * TODO: Reformat.
+ * 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.
+ *
+ * Added functionality for floppy formatting
+ * joerg_wunsch@uriah.sax.de (Joerg Wunsch)
+ */
+
+int
+fdioctl (dev, cmd, addr, flag, p)
+ dev_t dev;
+ int cmd;
+ caddr_t addr;
+ int flag;
+ struct proc *p;
+{
+ struct fd_type *fdt;
+ struct disklabel *dl;
+ char buffer[DEV_BSIZE];
+ int error;
+
+#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
+
+ error = 0;
+
+ 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, 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, NULL))
+ break;
+
+ error = writedisklabel(dev, fdstrategy,
+ (struct disklabel *)buffer, NULL);
+ 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;
+
+ default:
+ error = EINVAL;
+ break;
+ }
+ return (error);
+}
+
+#endif
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