/* $NetBSD: fd.c,v 1.34.8.2 2008/01/08 22:09:09 bouyer Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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 NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /*- * 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. 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. * * @(#)fd.c 7.4 (Berkeley) 5/25/91 * from: fd.c,v 1.104 1997/01/09 04:30:08 mycroft Exp */ /* * Floppy formatting facilities merged from FreeBSD fd.c driver: * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp * which carries the same copyright/redistribution notice as shown above with * the addition of the following statement before the "Redistribution and * use ..." clause: * * Copyright (c) 1993, 1994 by * jc@irbs.UUCP (John Capo) * vak@zebub.msk.su (Serge Vakulenko) * ache@astral.msk.su (Andrew A. Chernov) * * Copyright (c) 1993, 1994, 1995 by * joerg_wunsch@uriah.sax.de (Joerg Wunsch) * dufault@hda.com (Peter Dufault) */ #include __KERNEL_RCSID(0, "$NetBSD: fd.c,v 1.34.8.2 2008/01/08 22:09:09 bouyer Exp $"); #include "opt_ddb.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" #define NE7CMD_CONFIGURE 0x13 #define FDUNIT(dev) (minor(dev) / 8) #define FDTYPE(dev) (minor(dev) % 8) /* (mis)use device use flag to identify format operation */ #define B_FORMAT B_DEVPRIVATE enum fdc_state { DEVIDLE = 0, MOTORWAIT, DOSEEK, SEEKWAIT, SEEKTIMEDOUT, SEEKCOMPLETE, DOIO, IOCOMPLETE, IOTIMEDOUT, DORESET, RESETCOMPLETE, RESETTIMEDOUT, DORECAL, RECALWAIT, RECALTIMEDOUT, RECALCOMPLETE, }; /* software state, per controller */ struct fdc_softc { struct device sc_dev; /* boilerplate */ void *sc_ih; bus_space_tag_t sc_iot; /* ISA i/o space identifier */ bus_space_handle_t sc_ioh; /* ISA io handle */ struct callout sc_timo_ch; /* timeout callout */ struct callout sc_intr_ch; /* pseudo-intr callout */ /* ...for pseudo-DMA... */ struct fiqhandler sc_fh; /* FIQ handler descriptor */ struct fiqregs sc_fr; /* FIQ handler reg context */ int sc_drq; struct fd_softc *sc_fd[4]; /* pointers to children */ TAILQ_HEAD(drivehead, fd_softc) sc_drives; enum fdc_state sc_state; int sc_errors; /* number of retries so far */ u_char sc_status[7]; /* copy of registers */ }; /* controller driver configuration */ int fdcprobe __P((struct device *, struct cfdata *, void *)); int fdprint __P((void *, const char *)); void fdcattach __P((struct device *, struct device *, void *)); CFATTACH_DECL(fdc, sizeof(struct fdc_softc), fdcprobe, fdcattach, NULL, NULL); /* * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how * we tell them apart. */ struct fd_type { int sectrac; /* sectors per track */ int heads; /* number of heads */ int seccyl; /* sectors per cylinder */ int secsize; /* size code for sectors */ int datalen; /* data len when secsize = 0 */ int steprate; /* step rate and head unload time */ int gap1; /* gap len between sectors */ int gap2; /* formatting gap */ int cyls; /* total num of cylinders */ int size; /* size of disk in sectors */ int step; /* steps per cylinder */ int rate; /* transfer speed code */ u_char fillbyte; /* format fill byte */ u_char interleave; /* interleave factor (formatting) */ const char *name; }; /* The order of entries in the following table is important -- BEWARE! */ struct fd_type fd_types[] = { { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ { 15,2,30,2,0xff,0xdf,0x1b,0x54,80,2400,1,FDC_500KBPS,0xf6,1, "1.2MB" }, /* 1.2 MB AT-diskettes */ { 9,2,18,2,0xff,0xdf,0x23,0x50,40, 720,2,FDC_300KBPS,0xf6,1, "360KB/AT" }, /* 360kB in 1.2MB drive */ { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,1,FDC_250KBPS,0xf6,1, "360KB/PC" }, /* 360kB PC diskettes */ { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ { 9,2,18,2,0xff,0xdf,0x23,0x50,80,1440,1,FDC_300KBPS,0xf6,1, "720KB/x" }, /* 720kB in 1.2MB drive */ { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ }; /* software state, per disk (with up to 4 disks per ctlr) */ struct fd_softc { struct device sc_dev; struct disk sc_dk; struct fd_type *sc_deftype; /* default type descriptor */ struct fd_type *sc_type; /* current type descriptor */ struct fd_type sc_type_copy; /* copy for fiddling when formatting */ struct callout sc_motoron_ch; struct callout sc_motoroff_ch; daddr_t sc_blkno; /* starting block number */ int sc_bcount; /* byte count left */ int sc_opts; /* user-set options */ int sc_skip; /* bytes already transferred */ int sc_nblks; /* number of blocks currently transferring */ int sc_nbytes; /* number of bytes currently transferring */ int sc_drive; /* physical unit number */ int sc_flags; #define FD_OPEN 0x01 /* it's open */ #define FD_MOTOR 0x02 /* motor should be on */ #define FD_MOTOR_WAIT 0x04 /* motor coming up */ int sc_cylin; /* where we think the head is */ void *sc_sdhook; /* saved shutdown hook for drive. */ TAILQ_ENTRY(fd_softc) sc_drivechain; int sc_ops; /* I/O ops since last switch */ struct bufq_state *sc_q;/* pending I/O requests */ int sc_active; /* number of active I/O operations */ }; /* floppy driver configuration */ int fdprobe __P((struct device *, struct cfdata *, void *)); void fdattach __P((struct device *, struct device *, void *)); extern char floppy_read_fiq[], floppy_read_fiq_end[]; extern char floppy_write_fiq[], floppy_write_fiq_end[]; CFATTACH_DECL(fd, sizeof(struct fd_softc), fdprobe, fdattach, NULL, NULL); extern struct cfdriver fd_cd; dev_type_open(fdopen); dev_type_close(fdclose); dev_type_read(fdread); dev_type_write(fdwrite); dev_type_ioctl(fdioctl); dev_type_strategy(fdstrategy); const struct bdevsw fd_bdevsw = { fdopen, fdclose, fdstrategy, fdioctl, nodump, nosize, D_DISK }; const struct cdevsw fd_cdevsw = { fdopen, fdclose, fdread, fdwrite, fdioctl, nostop, notty, nopoll, nommap, nokqfilter, D_DISK }; void fdgetdisklabel __P((struct fd_softc *)); int fd_get_parms __P((struct fd_softc *)); void fdstart __P((struct fd_softc *)); struct dkdriver fddkdriver = { fdstrategy }; struct fd_type *fd_nvtotype __P((char *, int, int)); void fd_set_motor __P((struct fdc_softc *fdc, int reset)); void fd_motor_off __P((void *arg)); void fd_motor_on __P((void *arg)); int fdcresult __P((struct fdc_softc *fdc)); int out_fdc __P((bus_space_tag_t iot, bus_space_handle_t ioh, u_char x)); void fdcstart __P((struct fdc_softc *fdc)); void fdcstatus __P((struct device *dv, int n, const char *s)); void fdctimeout __P((void *arg)); void fdcpseudointr __P((void *arg)); int fdcintr __P((void *)); void fdcretry __P((struct fdc_softc *fdc)); void fdfinish __P((struct fd_softc *fd, struct buf *bp)); inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); int fdformat __P((dev_t, struct ne7_fd_formb *, struct lwp *)); int fdcprobe(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct pioc_attach_args *pa = aux; bus_space_tag_t iot; bus_space_handle_t ioh; int rv; if (pa->pa_name && strcmp(pa->pa_name, "fdc") != 0) return(0); iot = pa->pa_iot; rv = 0; /* Map the i/o space. */ if (bus_space_map(iot, pa->pa_iobase + pa->pa_offset, FDC_NPORT, 0, &ioh)) return 0; /* reset */ bus_space_write_2(iot, ioh, fdout, 0); delay(100); bus_space_write_2(iot, ioh, fdout, FDO_FRST); /* see if it can handle a command */ if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) goto out; out_fdc(iot, ioh, 0xdf); out_fdc(iot, ioh, 2); rv = 1; pa->pa_iosize = FDC_NPORT; out: bus_space_unmap(iot, ioh, FDC_NPORT); return rv; } /* * Arguments passed between fdcattach and fdprobe. */ struct fdc_attach_args { int fa_drive; struct fd_type *fa_deftype; }; /* * Print the location of a disk drive (called just before attaching the * the drive). If `fdc' is not NULL, the drive was found but was not * in the system config file; print the drive name as well. * Return QUIET (config_find ignores this if the device was configured) to * avoid printing `fdN not configured' messages. */ int fdprint(aux, fdc) void *aux; const char *fdc; { register struct fdc_attach_args *fa = aux; if (!fdc) aprint_normal(" drive %d", fa->fa_drive); return QUIET; } void fdcattach(parent, self, aux) struct device *parent, *self; void *aux; { struct fdc_softc *fdc = (void *)self; bus_space_tag_t iot; bus_space_handle_t ioh; struct pioc_attach_args *pa = aux; struct fdc_attach_args fa; int type; iot = pa->pa_iot; /* Re-map the I/O space. */ if (bus_space_map(iot, pa->pa_iobase + pa->pa_offset, FDC_NPORT, 0, &ioh)) panic("fdcattach: couldn't map I/O ports"); fdc->sc_iot = iot; fdc->sc_ioh = ioh; fdc->sc_drq = pa->pa_iobase + pa->pa_offset + pa->pa_drq; fdc->sc_state = DEVIDLE; TAILQ_INIT(&fdc->sc_drives); printf("\n"); callout_init(&fdc->sc_timo_ch, 0); callout_init(&fdc->sc_intr_ch, 0); fdc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "fdc", fdcintr, fdc); if (!fdc->sc_ih) panic("%s: Cannot claim IRQ %d", self->dv_xname, pa->pa_irq); #if 0 /* * The NVRAM info only tells us about the first two disks on the * `primary' floppy controller. */ if (device_unit(&fdc->sc_dev) == 0) type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ else type = -1; #endif type = 0x10; /* XXX - hardcoded for 1 floppy */ /* physical limit: four drives per controller. */ for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { if (type >= 0 && fa.fa_drive < 2) fa.fa_deftype = fd_nvtotype(fdc->sc_dev.dv_xname, type, fa.fa_drive); else fa.fa_deftype = NULL; /* unknown */ (void)config_found(self, (void *)&fa, fdprint); } } int fdprobe(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct fdc_softc *fdc = (void *)parent; struct fdc_attach_args *fa = aux; int drive = fa->fa_drive; bus_space_tag_t iot = fdc->sc_iot; bus_space_handle_t ioh = fdc->sc_ioh; int n; if (cf->cf_loc[FDCCF_DRIVE] != FDCCF_DRIVE_DEFAULT && cf->cf_loc[FDCCF_DRIVE] != drive) return 0; /* * XXX * This is to work around some odd interactions between this driver * and SMC Ethernet cards. */ /* Don't need this for arm32 port but leave for the time being (it won't hurt) */ if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) return 0; /* select drive and turn on motor */ bus_space_write_2(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); /* wait for motor to spin up */ delay(250000); out_fdc(iot, ioh, NE7CMD_RECAL); out_fdc(iot, ioh, drive); /* wait for recalibrate */ delay(2000000); out_fdc(iot, ioh, NE7CMD_SENSEI); n = fdcresult(fdc); #ifdef FD_DEBUG { int i; printf("fdprobe: status"); for (i = 0; i < n; i++) printf(" %x", fdc->sc_status[i]); printf("\n"); } #endif /* turn off motor */ bus_space_write_1(iot, ioh, fdout, FDO_FRST); if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) return 0; return 1; } /* * Controller is working, and drive responded. Attach it. */ void fdattach(parent, self, aux) struct device *parent, *self; void *aux; { struct fdc_softc *fdc = (void *)parent; struct fd_softc *fd = (void *)self; struct fdc_attach_args *fa = aux; struct fd_type *type = fa->fa_deftype; int drive = fa->fa_drive; callout_init(&fd->sc_motoron_ch, 0); callout_init(&fd->sc_motoroff_ch, 0); /* XXX Allow `flags' to override device type? */ if (type) printf(": %s %d cyl, %d head, %d sec\n", type->name, type->cyls, type->heads, type->sectrac); else printf(": density unknown\n"); bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); fd->sc_cylin = -1; fd->sc_drive = drive; fd->sc_deftype = type; fdc->sc_fd[drive] = fd; /* * Initialize and attach the disk structure. */ disk_init(&fd->sc_dk, fd->sc_dev.dv_xname, &fddkdriver); disk_attach(&fd->sc_dk); /* Needed to power off if the motor is on when we halt. */ } /* * Translate nvram type into internal data structure. Return NULL for * none/unknown/unusable. */ struct fd_type * fd_nvtotype(fdc, nvraminfo, drive) char *fdc; int nvraminfo, drive; { int type; type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; switch (type) { #ifndef RC7500 case 0x00 : return NULL; #else case 0x00 : #endif /* !RC7500 */ case 0x10 : return &fd_types[0]; default: printf("%s: drive %d: unknown device type 0x%x\n", fdc, drive, type); return NULL; } } inline struct fd_type * fd_dev_to_type(fd, dev) struct fd_softc *fd; dev_t dev; { int type = FDTYPE(dev); if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) return NULL; return type ? &fd_types[type - 1] : fd->sc_deftype; } void fdstrategy(bp) register struct buf *bp; /* IO operation to perform */ { struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(bp->b_dev)]; int sz; int s; /* Valid unit, controller, and request? */ if (bp->b_blkno < 0 || ((bp->b_bcount % FDC_BSIZE) != 0 && (bp->b_flags & B_FORMAT) == 0)) { bp->b_error = EINVAL; goto done; } /* If it's a null transfer, return immediately. */ if (bp->b_bcount == 0) goto done; sz = howmany(bp->b_bcount, FDC_BSIZE); if (bp->b_blkno + sz > fd->sc_type->size) { sz = fd->sc_type->size - bp->b_blkno; if (sz == 0) { /* If exactly at end of disk, return EOF. */ goto done; } if (sz < 0) { /* If past end of disk, return EINVAL. */ bp->b_error = EINVAL; goto done; } /* Otherwise, truncate request. */ bp->b_bcount = sz << DEV_BSHIFT; } bp->b_rawblkno = bp->b_blkno; bp->b_cylinder = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE) / fd->sc_type->seccyl; #ifdef FD_DEBUG printf("fdstrategy: b_blkno %d b_bcount %d blkno %d cylin %d sz %d\n", bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder, sz); #endif /* Queue transfer on drive, activate drive and controller if idle. */ s = splbio(); BUFQ_PUT(fd->sc_q, bp); callout_stop(&fd->sc_motoroff_ch); /* a good idea */ if (fd->sc_active == 0) fdstart(fd); #ifdef DIAGNOSTIC else { struct fdc_softc *fdc = (void *) device_parent(&fd->sc_dev); if (fdc->sc_state == DEVIDLE) { printf("fdstrategy: controller inactive\n"); fdcstart(fdc); } } #endif splx(s); return; done: /* Toss transfer; we're done early. */ bp->b_resid = bp->b_bcount; biodone(bp); } void fdstart(fd) struct fd_softc *fd; { struct fdc_softc *fdc = (void *) device_parent(&fd->sc_dev); int active = fdc->sc_drives.tqh_first != 0; /* Link into controller queue. */ fd->sc_active = 1; TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); /* If controller not already active, start it. */ if (!active) fdcstart(fdc); } void fdfinish(fd, bp) struct fd_softc *fd; struct buf *bp; { struct fdc_softc *fdc = (void *) device_parent(&fd->sc_dev); /* * Move this drive to the end of the queue to give others a `fair' * chance. We only force a switch if N operations are completed while * another drive is waiting to be serviced, since there is a long motor * startup delay whenever we switch. */ (void)BUFQ_GET(fd->sc_q); if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { fd->sc_ops = 0; TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); if (BUFQ_PEEK(fd->sc_q) != NULL) TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); else fd->sc_active = 0; } bp->b_resid = fd->sc_bcount; fd->sc_skip = 0; biodone(bp); /* turn off motor 5s from now */ callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); fdc->sc_state = DEVIDLE; } int fdread(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); } int fdwrite(dev, uio, flags) dev_t dev; struct uio *uio; int flags; { return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); } void fd_set_motor(fdc, reset) struct fdc_softc *fdc; int reset; { struct fd_softc *fd; u_char status; int n; if ((fd = fdc->sc_drives.tqh_first) != NULL) status = fd->sc_drive; else status = 0; if (!reset) status |= FDO_FRST | FDO_FDMAEN; for (n = 0; n < 4; n++) if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) status |= FDO_MOEN(n); bus_space_write_2(fdc->sc_iot, fdc->sc_ioh, fdout, status); } void fd_motor_off(arg) void *arg; { struct fd_softc *fd = arg; int s; s = splbio(); fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); fd_set_motor((struct fdc_softc *) device_parent(&fd->sc_dev), 0); splx(s); } void fd_motor_on(arg) void *arg; { struct fd_softc *fd = arg; struct fdc_softc *fdc = (void *) device_parent(&fd->sc_dev); int s; s = splbio(); fd->sc_flags &= ~FD_MOTOR_WAIT; if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) (void) fdcintr(fdc); splx(s); } int fdcresult(fdc) struct fdc_softc *fdc; { bus_space_tag_t iot = fdc->sc_iot; bus_space_handle_t ioh = fdc->sc_ioh; u_char i; int j = 100000, n = 0; for (; j; j--) { i = bus_space_read_1(iot, ioh, fdsts) & (NE7_DIO | NE7_RQM | NE7_CB); if (i == NE7_RQM) return n; if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { if (n >= sizeof(fdc->sc_status)) { log(LOG_ERR, "fdcresult: overrun\n"); return -1; } fdc->sc_status[n++] = bus_space_read_1(iot, ioh, fddata); } delay(10); } log(LOG_ERR, "fdcresult: timeout\n"); return -1; } int out_fdc(iot, ioh, x) bus_space_tag_t iot; bus_space_handle_t ioh; u_char x; { int i = 100000; while ((bus_space_read_1(iot, ioh, fdsts) & NE7_DIO) && i-- > 0); if (i <= 0) return -1; while ((bus_space_read_1(iot, ioh, fdsts) & NE7_RQM) == 0 && i-- > 0); if (i <= 0) return -1; bus_space_write_2(iot, ioh, fddata, x); return 0; } int fdopen(dev, flags, mode, l) dev_t dev; int flags; int mode; struct lwp *l; { int unit; struct fd_softc *fd; struct fd_type *type; unit = FDUNIT(dev); if (unit >= fd_cd.cd_ndevs) return ENXIO; fd = fd_cd.cd_devs[unit]; if (fd == 0) return ENXIO; type = fd_dev_to_type(fd, dev); if (type == NULL) return ENXIO; if ((fd->sc_flags & FD_OPEN) != 0 && memcmp(fd->sc_type, type, sizeof(*type))) return EBUSY; fd->sc_type_copy = *type; fd->sc_type = &fd->sc_type_copy; fd->sc_cylin = -1; fd->sc_flags |= FD_OPEN; return 0; } int fdclose(dev, flags, mode, l) dev_t dev; int flags; int mode; struct lwp *l; { struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; fd->sc_flags &= ~FD_OPEN; fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); return 0; } void fdcstart(fdc) struct fdc_softc *fdc; { #ifdef DIAGNOSTIC /* only got here if controller's drive queue was inactive; should be in idle state */ if (fdc->sc_state != DEVIDLE) { printf("fdcstart: not idle\n"); return; } #endif (void) fdcintr(fdc); } void fdcstatus(dv, n, s) struct device *dv; int n; const char *s; { struct fdc_softc *fdc = (void *) device_parent(dv); char bits[64]; if (n == 0) { out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); (void) fdcresult(fdc); n = 2; } printf("%s: %s", dv->dv_xname, s); switch (n) { case 0: printf("\n"); break; case 2: printf(" (st0 %s cyl %d)\n", bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, bits, sizeof(bits)), fdc->sc_status[1]); break; case 7: printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, bits, sizeof(bits))); printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], NE7_ST1BITS, bits, sizeof(bits))); printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], NE7_ST2BITS, bits, sizeof(bits))); printf(" cyl %d head %d sec %d)\n", fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); break; #ifdef DIAGNOSTIC default: printf("\nfdcstatus: weird size"); break; #endif } } void fdctimeout(arg) void *arg; { struct fdc_softc *fdc = arg; struct fd_softc *fd = fdc->sc_drives.tqh_first; int s; s = splbio(); #ifdef DEBUG log(LOG_ERR,"fdctimeout: state %d\n", fdc->sc_state); #endif fdcstatus(&fd->sc_dev, 0, "timeout"); if (BUFQ_PEEK(fd->sc_q) != NULL) fdc->sc_state++; else fdc->sc_state = DEVIDLE; (void) fdcintr(fdc); splx(s); } void fdcpseudointr(arg) void *arg; { int s; /* Just ensure it has the right spl. */ s = splbio(); (void) fdcintr(arg); splx(s); } int fdcintr(arg) void *arg; { struct fdc_softc *fdc = arg; #define st0 fdc->sc_status[0] #define cyl fdc->sc_status[1] struct fd_softc *fd; struct buf *bp; bus_space_tag_t iot = fdc->sc_iot; bus_space_handle_t ioh = fdc->sc_ioh; int read, head, sec, i, nblks; struct fd_type *type; struct ne7_fd_formb *finfo = NULL; loop: /* Is there a drive for the controller to do a transfer with? */ fd = fdc->sc_drives.tqh_first; if (fd == NULL) { fdc->sc_state = DEVIDLE; return 1; } /* Is there a transfer to this drive? If not, deactivate drive. */ bp = BUFQ_PEEK(fd->sc_q); if (bp == NULL) { fd->sc_ops = 0; TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); fd->sc_active = 0; goto loop; } if (bp->b_flags & B_FORMAT) finfo = (struct ne7_fd_formb *)bp->b_data; switch (fdc->sc_state) { case DEVIDLE: fdc->sc_errors = 0; fd->sc_skip = 0; fd->sc_bcount = bp->b_bcount; fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); callout_stop(&fd->sc_motoroff_ch); if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { fdc->sc_state = MOTORWAIT; return 1; } if ((fd->sc_flags & FD_MOTOR) == 0) { /* Turn on the motor, being careful about pairing. */ struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; if (ofd && ofd->sc_flags & FD_MOTOR) { callout_stop(&ofd->sc_motoroff_ch); ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); } fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; fd_set_motor(fdc, 0); fdc->sc_state = MOTORWAIT; /* Allow .25s for motor to stabilize. */ callout_reset(&fd->sc_motoron_ch, hz / 4, fd_motor_on, fd); return 1; } /* Make sure the right drive is selected. */ fd_set_motor(fdc, 0); /* fall through */ case DOSEEK: doseek: if (fd->sc_cylin == bp->b_cylinder) goto doio; #if 1 out_fdc(iot, ioh, NE7CMD_CONFIGURE);/* configure command */ out_fdc(iot, ioh, 0); out_fdc(iot, ioh, 0x18); out_fdc(iot, ioh, 0); #endif out_fdc(iot, ioh, NE7CMD_SPECIFY);/* specify command */ out_fdc(iot, ioh, fd->sc_type->steprate); out_fdc(iot, ioh, 6); /* XXX head load time == 6ms */ out_fdc(iot, ioh, NE7CMD_SEEK); /* seek function */ out_fdc(iot, ioh, fd->sc_drive); /* drive number */ out_fdc(iot, ioh, bp->b_cylinder * fd->sc_type->step); fd->sc_cylin = -1; fdc->sc_state = SEEKWAIT; iostat_seek(fd->sc_dk.dk_stats); disk_busy(&fd->sc_dk); callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); return 1; case DOIO: doio: type = fd->sc_type; if (finfo) fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - (char *)finfo; sec = fd->sc_blkno % type->seccyl; nblks = type->seccyl - sec; nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); fd->sc_nblks = nblks; fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; head = sec / type->sectrac; sec -= head * type->sectrac; #ifdef DIAGNOSTIC {daddr_t block; block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; if (block != fd->sc_blkno) { printf("fdcintr: block %" PRId64 " != blkno %" PRId64 "\n", block, fd->sc_blkno); #ifdef DDB Debugger(); #endif }} #endif read = bp->b_flags & B_READ; if (read) { fdc->sc_fh.fh_func = floppy_read_fiq; fdc->sc_fh.fh_size = floppy_read_fiq_end - floppy_read_fiq; } else { fdc->sc_fh.fh_func = floppy_write_fiq; fdc->sc_fh.fh_size = floppy_read_fiq_end - floppy_read_fiq; } fdc->sc_fh.fh_flags = 0; fdc->sc_fh.fh_regs = &fdc->sc_fr; fdc->sc_fr.fr_r9 = IOMD_BASE + (IOMD_FIQRQ << 2); fdc->sc_fr.fr_r10 = fd->sc_nbytes; fdc->sc_fr.fr_r11 = (u_int)((uintptr_t)bp->b_data + fd->sc_skip); fdc->sc_fr.fr_r12 = fdc->sc_drq; #ifdef FD_DEBUG printf("fdc-doio:r9=%x r10=%x r11=%x r12=%x data=%x skip=%x\n", fdc->sc_fr.fr_r9, fdc->sc_fr.fh_r10, fdc->sc_fr.fh_r11, fdc->sc_fr.fh_r12, (u_int)bp->b_data, fd->sc_skip); #endif if (fiq_claim(&fdc->sc_fh) == -1) panic("%s: Cannot claim FIQ vector", fdc->sc_dev.dv_xname); IOMD_WRITE_BYTE(IOMD_FIQMSK, 0x01); bus_space_write_2(iot, ioh, fdctl, type->rate); #ifdef FD_DEBUG printf("fdcintr: %s drive %d track %d head %d sec %d nblks %d\n", read ? "read" : "write", fd->sc_drive, fd->sc_cylin, head, sec, nblks); #endif if (finfo) { /* formatting */ if (out_fdc(iot, ioh, NE7CMD_FORMAT) < 0) { fdc->sc_errors = 4; fdcretry(fdc); goto loop; } out_fdc(iot, ioh, (head << 2) | fd->sc_drive); out_fdc(iot, ioh, finfo->fd_formb_secshift); out_fdc(iot, ioh, finfo->fd_formb_nsecs); out_fdc(iot, ioh, finfo->fd_formb_gaplen); out_fdc(iot, ioh, finfo->fd_formb_fillbyte); } else { if (read) out_fdc(iot, ioh, NE7CMD_READ); /* READ */ else out_fdc(iot, ioh, NE7CMD_WRITE); /* WRITE */ out_fdc(iot, ioh, (head << 2) | fd->sc_drive); out_fdc(iot, ioh, fd->sc_cylin); /* track */ out_fdc(iot, ioh, head); out_fdc(iot, ioh, sec + 1); /* sector +1 */ out_fdc(iot, ioh, type->secsize);/* sector size */ out_fdc(iot, ioh, type->sectrac);/* sectors/track */ out_fdc(iot, ioh, type->gap1); /* gap1 size */ out_fdc(iot, ioh, type->datalen);/* data length */ } fdc->sc_state = IOCOMPLETE; disk_busy(&fd->sc_dk); /* allow 2 seconds for operation */ callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); return 1; /* will return later */ case SEEKWAIT: callout_stop(&fdc->sc_timo_ch); fdc->sc_state = SEEKCOMPLETE; /* allow 1/50 second for heads to settle */ #if 0 callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); #endif return 1; case SEEKCOMPLETE: /* no data on seek */ disk_unbusy(&fd->sc_dk, 0, 0); /* Make sure seek really happened. */ out_fdc(iot, ioh, NE7CMD_SENSEI); if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != bp->b_cylinder * fd->sc_type->step) { #ifdef FD_DEBUG fdcstatus(&fd->sc_dev, 2, "seek failed"); #endif fdcretry(fdc); goto loop; } fd->sc_cylin = bp->b_cylinder; goto doio; case IOTIMEDOUT: fiq_release(&fdc->sc_fh); IOMD_WRITE_BYTE(IOMD_FIQMSK, 0x00); case SEEKTIMEDOUT: case RECALTIMEDOUT: case RESETTIMEDOUT: fdcretry(fdc); goto loop; case IOCOMPLETE: /* IO DONE, post-analyze */ callout_stop(&fdc->sc_timo_ch); disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); if (fdcresult(fdc) != 7 || (st0 & 0xf8) != 0) { fiq_release(&fdc->sc_fh); IOMD_WRITE_BYTE(IOMD_FIQMSK, 0x00); #ifdef FD_DEBUG fdcstatus(&fd->sc_dev, 7, bp->b_flags & B_READ ? "read failed" : "write failed"); printf("blkno %d nblks %d\n", fd->sc_blkno, fd->sc_nblks); #endif fdcretry(fdc); goto loop; } fiq_release(&fdc->sc_fh); IOMD_WRITE_BYTE(IOMD_FIQMSK, 0x00); if (fdc->sc_errors) { #if 0 diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); printf("\n"); #endif fdc->sc_errors = 0; } fd->sc_blkno += fd->sc_nblks; fd->sc_skip += fd->sc_nbytes; fd->sc_bcount -= fd->sc_nbytes; if (!finfo && fd->sc_bcount > 0) { bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; goto doseek; } fdfinish(fd, bp); goto loop; case DORESET: /* try a reset, keep motor on */ fd_set_motor(fdc, 1); delay(100); fd_set_motor(fdc, 0); fdc->sc_state = RESETCOMPLETE; callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); return 1; /* will return later */ case RESETCOMPLETE: callout_stop(&fdc->sc_timo_ch); /* clear the controller output buffer */ for (i = 0; i < 4; i++) { out_fdc(iot, ioh, NE7CMD_SENSEI); (void) fdcresult(fdc); } /* fall through */ case DORECAL: out_fdc(iot, ioh, NE7CMD_RECAL); /* recalibrate function */ out_fdc(iot, ioh, fd->sc_drive); fdc->sc_state = RECALWAIT; callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); return 1; /* will return later */ case RECALWAIT: callout_stop(&fdc->sc_timo_ch); fdc->sc_state = RECALCOMPLETE; /* allow 1/30 second for heads to settle */ #if 0 callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); #endif return 1; /* will return later */ case RECALCOMPLETE: out_fdc(iot, ioh, NE7CMD_SENSEI); if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { #ifdef FD_DEBUG fdcstatus(&fd->sc_dev, 2, "recalibrate failed"); #endif fdcretry(fdc); goto loop; } fd->sc_cylin = 0; goto doseek; case MOTORWAIT: if (fd->sc_flags & FD_MOTOR_WAIT) return 1; /* time's not up yet */ goto doseek; default: fdcstatus(&fd->sc_dev, 0, "stray interrupt"); return 1; } #ifdef DIAGNOSTIC panic("fdcintr: impossible"); #endif #undef st0 #undef cyl } void fdcretry(fdc) struct fdc_softc *fdc; { char bits[64]; struct fd_softc *fd; struct buf *bp; fd = fdc->sc_drives.tqh_first; bp = BUFQ_PEEK(fd->sc_q); if (fd->sc_opts & FDOPT_NORETRY) goto fail; switch (fdc->sc_errors) { case 0: /* try again */ fdc->sc_state = DOSEEK; break; case 1: case 2: case 3: /* didn't work; try recalibrating */ fdc->sc_state = DORECAL; break; case 4: /* still no go; reset the bastard */ fdc->sc_state = DORESET; break; default: fail: if ((fd->sc_opts & FDOPT_SILENT) == 0) { diskerr(bp, "fd", "hard error", LOG_PRINTF, fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, bits, sizeof(bits))); printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], NE7_ST1BITS, bits, sizeof(bits))); printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], NE7_ST2BITS, bits, sizeof(bits))); printf(" cyl %d head %d sec %d)\n", fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); } bp->b_error = EIO; fdfinish(fd, bp); } fdc->sc_errors++; } int fdioctl(dev, cmd, addr, flag, l) dev_t dev; u_long cmd; void *addr; int flag; struct lwp *l; { struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; struct fdformat_parms *form_parms; struct fdformat_cmd *form_cmd; struct ne7_fd_formb *fd_formb; struct disklabel buffer; int error; unsigned int scratch; int il[FD_MAX_NSEC + 1]; register int i, j; switch (cmd) { case DIOCGDINFO: memset(&buffer, 0, sizeof(buffer)); buffer.d_secpercyl = fd->sc_type->seccyl; buffer.d_type = DTYPE_FLOPPY; buffer.d_secsize = FDC_BSIZE; if (readdisklabel(dev, fdstrategy, &buffer, NULL) != NULL) return EINVAL; *(struct disklabel *)addr = buffer; return 0; case DIOCWLABEL: if ((flag & FWRITE) == 0) return EBADF; /* XXX do something */ return 0; case DIOCWDINFO: if ((flag & FWRITE) == 0) return EBADF; error = setdisklabel(&buffer, (struct disklabel *)addr, 0, NULL); if (error) return error; error = writedisklabel(dev, fdstrategy, &buffer, NULL); return error; case FDIOCGETFORMAT: form_parms = (struct fdformat_parms *)addr; form_parms->fdformat_version = FDFORMAT_VERSION; form_parms->nbps = 128 * (1 << fd->sc_type->secsize); form_parms->ncyl = fd->sc_type->cyls; form_parms->nspt = fd->sc_type->sectrac; form_parms->ntrk = fd->sc_type->heads; form_parms->stepspercyl = fd->sc_type->step; form_parms->gaplen = fd->sc_type->gap2; form_parms->fillbyte = fd->sc_type->fillbyte; form_parms->interleave = fd->sc_type->interleave; switch (fd->sc_type->rate) { case FDC_500KBPS: form_parms->xfer_rate = 500 * 1024; break; case FDC_300KBPS: form_parms->xfer_rate = 300 * 1024; break; case FDC_250KBPS: form_parms->xfer_rate = 250 * 1024; break; default: return EINVAL; } return 0; case FDIOCSETFORMAT: if((flag & FWRITE) == 0) return EBADF; /* must be opened for writing */ form_parms = (struct fdformat_parms *)addr; if (form_parms->fdformat_version != FDFORMAT_VERSION) return EINVAL; /* wrong version of formatting prog */ scratch = form_parms->nbps >> 7; if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || scratch & ~(1 << (ffs(scratch)-1))) /* not a power-of-two multiple of 128 */ return EINVAL; switch (form_parms->xfer_rate) { case 500 * 1024: fd->sc_type->rate = FDC_500KBPS; break; case 300 * 1024: fd->sc_type->rate = FDC_300KBPS; break; case 250 * 1024: fd->sc_type->rate = FDC_250KBPS; break; default: return EINVAL; } if (form_parms->nspt > FD_MAX_NSEC || form_parms->fillbyte > 0xff || form_parms->interleave > 0xff) return EINVAL; fd->sc_type->sectrac = form_parms->nspt; if (form_parms->ntrk != 2 && form_parms->ntrk != 1) return EINVAL; fd->sc_type->heads = form_parms->ntrk; fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; fd->sc_type->secsize = ffs(scratch)-1; fd->sc_type->gap2 = form_parms->gaplen; fd->sc_type->cyls = form_parms->ncyl; fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * form_parms->nbps / DEV_BSIZE; fd->sc_type->step = form_parms->stepspercyl; fd->sc_type->fillbyte = form_parms->fillbyte; fd->sc_type->interleave = form_parms->interleave; return 0; case FDIOCFORMAT_TRACK: if((flag & FWRITE) == 0) return EBADF; /* must be opened for writing */ form_cmd = (struct fdformat_cmd *)addr; if (form_cmd->formatcmd_version != FDFORMAT_VERSION) return EINVAL; /* wrong version of formatting prog */ if (form_cmd->head >= fd->sc_type->heads || form_cmd->cylinder >= fd->sc_type->cyls) { return EINVAL; } fd_formb = malloc(sizeof(struct ne7_fd_formb), M_TEMP, M_NOWAIT); if(fd_formb == 0) return ENOMEM; fd_formb->head = form_cmd->head; fd_formb->cyl = form_cmd->cylinder; fd_formb->transfer_rate = fd->sc_type->rate; fd_formb->fd_formb_secshift = fd->sc_type->secsize; fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; fd_formb->fd_formb_gaplen = fd->sc_type->gap2; fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; memset(il, 0, sizeof il); for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { while (il[(j%fd_formb->fd_formb_nsecs)+1]) j++; il[(j%fd_formb->fd_formb_nsecs)+1] = i; j += fd->sc_type->interleave; } for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; fd_formb->fd_formb_headno(i) = form_cmd->head; fd_formb->fd_formb_secno(i) = il[i+1]; fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; } error = fdformat(dev, fd_formb, l); free(fd_formb, M_TEMP); return error; case FDIOCGETOPTS: /* get drive options */ *(int *)addr = fd->sc_opts; return 0; case FDIOCSETOPTS: /* set drive options */ fd->sc_opts = *(int *)addr; return 0; default: return ENOTTY; } #ifdef DIAGNOSTIC panic("fdioctl: impossible"); #endif } int fdformat(dev, finfo, l) dev_t dev; struct ne7_fd_formb *finfo; struct lwp *l; { int rv = 0; struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; struct fd_type *type = fd->sc_type; struct buf *bp; /* set up a buffer header for fdstrategy() */ bp = getiobuf(NULL, false); if(bp == 0) return ENOBUFS; bp->b_flags = B_PHYS | B_FORMAT; bp->b_cflags |= BC_BUSY; bp->b_proc = l->l_proc; bp->b_dev = dev; /* * calculate a fake blkno, so fdstrategy() would initiate a * seek to the requested cylinder */ bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; bp->b_data = (void *)finfo; #ifdef DEBUG printf("fdformat: blkno %llx count %lx\n", (unsigned long long)bp->b_blkno, bp->b_bcount); #endif /* now do the format */ fdstrategy(bp); /* ...and wait for it to complete */ /* XXX very dodgy */ mutex_enter(bp->b_objlock); while (!(bp->b_oflags & BO_DONE)) { rv = cv_timedwait(&bp->b_done, bp->b_objlock, 20 * hz); if (rv == EWOULDBLOCK) break; } mutex_exit(bp->b_objlock); if (rv == EWOULDBLOCK) { /* timed out */ rv = EIO; biodone(bp); } else if (bp->b_error != 0) rv = bp->b_error; putiobuf(bp); return rv; } #include "md.h" #if NMD > 0 #include int load_memory_disc_from_floppy __P((struct md_conf *md, dev_t dev)); int load_memory_disc_from_floppy(md, dev) struct md_conf *md; dev_t dev; { struct buf *bp; int loop; int s; int type; int floppysize; if (bdevsw_lookup(dev) != &fd_bdevsw) return(EINVAL); if (md->md_type == MD_UNCONFIGURED || md->md_addr == 0) return(EBUSY); type = FDTYPE(dev) - 1; if (type < 0) type = 0; floppysize = fd_types[type].size << (fd_types[type].secsize + 7); if (md->md_size < floppysize) { printf("Memory disc is not big enough for floppy image\n"); return(EINVAL); } /* We have the memory disk ! */ printf("Loading memory disc : %4dK ", 0); /* obtain a buffer */ bp = geteblk(fd_types[type].sectrac * DEV_BSIZE); /* request no partition relocation by driver on I/O operations */ bp->b_dev = dev; s = spl0(); if (fdopen(bp->b_dev, 0, 0, curlwp) != 0) { brelse(bp, 0); printf("Cannot open floppy device\n"); return(EINVAL); } for (loop = 0; loop < (floppysize / DEV_BSIZE / fd_types[type].sectrac); ++loop) { printf("\x08\x08\x08\x08\x08\x08%4dK ", loop * fd_types[type].sectrac * DEV_BSIZE / 1024); bp->b_blkno = loop * fd_types[type].sectrac; bp->b_bcount = fd_types[type].sectrac * DEV_BSIZE; bp->b_flags |= B_READ; bp->b_error = 0; bp->b_resid = 0; fdstrategy(bp); if (biowait(bp)) panic("Cannot load floppy image"); memcpy((char *)md->md_addr + loop * fd_types[type].sectrac * DEV_BSIZE, (void *)bp->b_data, fd_types[type].sectrac * DEV_BSIZE); } printf("\x08\x08\x08\x08\x08\x08%4dK done\n", loop * fd_types[type].sectrac * DEV_BSIZE / 1024); fdclose(bp->b_dev, 0, 0, curlwp); brelse(bp, 0); splx(s); return(0); } #endif