/* $NetBSD: fd.c,v 1.117 2022/09/25 17:11:48 thorpej Exp $ */ /*- * Copyright (c) 1998, 2003, 2008 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. * * 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 */ /* * 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 1.117 2022/09/25 17:11:48 thorpej Exp $"); #include "opt_ddb.h" /* * XXX This driver should be properly MI'd some day, but this allows us * XXX to eliminate a lot of code duplication for now. */ #if !defined(alpha) && !defined(algor) && !defined(atari) && \ !defined(bebox) && !defined(evbmips) && !defined(i386) && \ !defined(prep) && !defined(sandpoint) && !defined(x86_64) && \ !defined(mvmeppc) && !defined(ofppc) #error platform not supported by this driver, yet #endif #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" #if defined(atari) /* * On the atari, it is configured as fdcisa */ #define FDCCF_DRIVE FDCISACF_DRIVE #define FDCCF_DRIVE_DEFAULT FDCISACF_DRIVE_DEFAULT #define fd_cd fdisa_cd #endif /* atari */ #include #include #include #include #include #if defined(i386) || defined(x86_64) #include /* for NVRAM access */ #include #if defined(i386) #include "mca.h" #if NMCA > 0 #include /* for MCA_system */ #endif #endif #endif /* i386 || x86_64 */ #include #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 /* controller driver configuration */ int fdprint(void *, const char *); #if NMCA > 0 /* MCA - specific entries */ const struct fd_type mca_fd_types[] = { { 18,2,36,2,0xff,0x0f,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette - XXX try 16ms step rate */ { 9,2,18,2,0xff,0x4f,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5 inch 720kB diskette - XXX try 24ms step rate */ }; #endif /* NMCA > 0 */ /* The order of entries in the following table is important -- BEWARE! */ #if defined(atari) const struct fd_type fd_types[] = { { 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 inch 720kB diskette */ { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ }; #else const 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 inch 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 */ }; #endif /* defined(atari) */ void fdcfinishattach(device_t); int fdprobe(device_t, cfdata_t, void *); void fdattach(device_t, device_t, void *); static int fddetach(device_t, int); static int fdcintr1(struct fdc_softc *); static void fdcintrcb(void *); static bool fdcsuspend(device_t, const pmf_qual_t *); static bool fdcresume(device_t, const pmf_qual_t *); extern struct cfdriver fd_cd; #ifdef atari CFATTACH_DECL_NEW(fdisa, sizeof(struct fd_softc), fdprobe, fdattach, fddetach, NULL); #else CFATTACH_DECL_NEW(fd, sizeof(struct fd_softc), fdprobe, fdattach, fddetach, NULL); #endif 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 = { .d_open = fdopen, .d_close = fdclose, .d_strategy = fdstrategy, .d_ioctl = fdioctl, .d_dump = nodump, .d_psize = nosize, .d_discard = nodiscard, .d_flag = D_DISK }; const struct cdevsw fd_cdevsw = { .d_open = fdopen, .d_close = fdclose, .d_read = fdread, .d_write = fdwrite, .d_ioctl = fdioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = nommap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_flag = D_DISK }; void fdgetdisklabel(struct fd_softc *); int fd_get_parms(struct fd_softc *); void fdstart(struct fd_softc *); struct dkdriver fddkdriver = { .d_strategy = fdstrategy, .d_minphys = minphys }; #if defined(i386) || defined(x86_64) const struct fd_type *fd_nvtotype(const char *, int, int); #endif /* i386 || x86_64 */ void fd_set_motor(struct fdc_softc *fdc, int reset); void fd_motor_off(void *arg); void fd_motor_on(void *arg); int fdcresult(struct fdc_softc *fdc); void fdcstart(struct fdc_softc *fdc); void fdcstatus(device_t, int, const char *); void fdctimeout(void *arg); void fdcretry(struct fdc_softc *fdc); void fdfinish(struct fd_softc *fd, struct buf *bp); static const struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); int fdformat(dev_t, struct ne7_fd_formb *, struct lwp *); static void fd_set_geometry(struct fd_softc *fd); void fd_mountroot_hook(device_t); /* * Arguments passed between fdcattach and fdprobe. */ struct fdc_attach_args { int fa_drive; const 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(void *aux, const char *fdc) { struct fdc_attach_args *fa = aux; if (!fdc) aprint_normal(" drive %d", fa->fa_drive); return QUIET; } static bool fdcresume(device_t self, const pmf_qual_t *qual) { struct fdc_softc *fdc = device_private(self); mutex_enter(&fdc->sc_mtx); (void)fdcintr1(fdc); mutex_exit(&fdc->sc_mtx); return true; } static bool fdcsuspend(device_t self, const pmf_qual_t *qual) { struct fdc_softc *fdc = device_private(self); int drive; struct fd_softc *fd; mutex_enter(&fdc->sc_mtx); while (fdc->sc_state != DEVIDLE) cv_wait(&fdc->sc_cv, &fdc->sc_mtx); for (drive = 0; drive < 4; drive++) { if ((fd = fdc->sc_fd[drive]) == NULL) continue; fd->sc_flags &= ~(FD_MOTOR|FD_MOTOR_WAIT); } fd_set_motor(fdc, 0); mutex_exit(&fdc->sc_mtx); return true; } void fdc_childdet(device_t self, device_t child) { struct fdc_softc *fdc = device_private(self); struct fd_softc *fd = device_private(child); int drive = fd->sc_drive; KASSERT(fdc->sc_fd[drive] == fd); /* but the kid is not my son */ fdc->sc_fd[drive] = NULL; } int fdcdetach(device_t self, int flags) { int rc; struct fdc_softc *fdc = device_private(self); if ((rc = config_detach_children(self, flags)) != 0) return rc; pmf_device_deregister(self); isa_dmamap_destroy(fdc->sc_ic, fdc->sc_drq); isa_drq_free(fdc->sc_ic, fdc->sc_drq); callout_destroy(&fdc->sc_intr_ch); callout_destroy(&fdc->sc_timo_ch); cv_destroy(&fdc->sc_cv); mutex_destroy(&fdc->sc_mtx); return 0; } void fdcattach(struct fdc_softc *fdc) { mutex_init(&fdc->sc_mtx, MUTEX_DEFAULT, IPL_BIO); cv_init(&fdc->sc_cv, "fdcwake"); callout_init(&fdc->sc_timo_ch, 0); callout_init(&fdc->sc_intr_ch, 0); fdc->sc_state = DEVIDLE; TAILQ_INIT(&fdc->sc_drives); fdc->sc_maxiosize = isa_dmamaxsize(fdc->sc_ic, fdc->sc_drq); if (isa_drq_alloc(fdc->sc_ic, fdc->sc_drq) != 0) { aprint_normal_dev(fdc->sc_dev, "can't reserve drq %d\n", fdc->sc_drq); return; } if (isa_dmamap_create(fdc->sc_ic, fdc->sc_drq, fdc->sc_maxiosize, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { aprint_normal_dev(fdc->sc_dev, "can't set up ISA DMA map\n"); return; } config_interrupts(fdc->sc_dev, fdcfinishattach); if (!pmf_device_register(fdc->sc_dev, fdcsuspend, fdcresume)) { aprint_error_dev(fdc->sc_dev, "cannot set power mgmt handler\n"); } } void fdcfinishattach(device_t self) { struct fdc_softc *fdc = device_private(self); bus_space_tag_t iot = fdc->sc_iot; bus_space_handle_t ioh = fdc->sc_ioh; struct fdc_attach_args fa; /* * Reset the controller to get it into a known state. Not all * probes necessarily need do this to discover the controller up * front, so don't assume anything. */ bus_space_write_1(iot, ioh, fdout, 0); delay(100); bus_space_write_1(iot, ioh, fdout, FDO_FRST); /* see if it can handle a command */ if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) { aprint_normal_dev(fdc->sc_dev, "can't reset controller\n"); return; } out_fdc(iot, ioh, 0xdf); out_fdc(iot, ioh, 2); #if defined(i386) || defined(x86_64) /* * The NVRAM info only tells us about the first two disks on the * `primary' floppy controller. */ /* XXX device_unit() abuse */ if (device_unit(fdc->sc_dev) == 0) { int type = mc146818_read(NULL, NVRAM_DISKETTE); /* XXX softc */ fdc->sc_known = 1; fdc->sc_knownfds[0] = fd_nvtotype(device_xname(fdc->sc_dev), type, 0); if (fdc->sc_knownfds[0] != NULL) fdc->sc_present |= 1; fdc->sc_knownfds[1] = fd_nvtotype(device_xname(fdc->sc_dev), type, 1); if (fdc->sc_knownfds[1] != NULL) fdc->sc_present |= 2; } #endif /* i386 || x86_64 */ /* physical limit: four drives per controller. */ fdc->sc_state = PROBING; for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { if (fdc->sc_known) { if (fdc->sc_present & (1 << fa.fa_drive)) { fa.fa_deftype = fdc->sc_knownfds[fa.fa_drive]; config_found(fdc->sc_dev, (void *)&fa, fdprint, CFARGS_NONE); } } else { #if defined(atari) /* * Atari has a different ordening, defaults to 1.44 */ fa.fa_deftype = &fd_types[2]; /* Atari also configures ISA fdc(4) as "fdcisa" */ config_found(fdc->sc_dev, &fa, fdprint, CFARGS(.iattr = "fdcisa")); #else /* * Default to 1.44MB on Alpha and BeBox. How do we tell * on these platforms? */ fa.fa_deftype = &fd_types[0]; config_found(fdc->sc_dev, &fa, fdprint, CFARGS(.iattr = "fdc")); #endif } } fdc->sc_state = DEVIDLE; } int fdprobe(device_t parent, cfdata_t match, void *aux) { struct fdc_softc *fdc = device_private(parent); cfdata_t cf = match; 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. */ if (cf->cf_loc[FDCCF_DRIVE] == FDCCF_DRIVE_DEFAULT && drive >= 2) return 0; /* Use PNP information if available */ if (fdc->sc_known) return 1; mutex_enter(&fdc->sc_mtx); /* toss any interrupt status */ for (n = 0; n < 4; n++) { out_fdc(iot, ioh, NE7CMD_SENSEI); (void) fdcresult(fdc); } /* select drive and turn on motor */ bus_space_write_1(iot, ioh, fdout, drive | FDO_FRST | FDO_MOEN(drive)); /* wait for motor to spin up */ /* XXX check sc_probe */ (void) cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, hz / 4); out_fdc(iot, ioh, NE7CMD_RECAL); out_fdc(iot, ioh, drive); /* wait for recalibrate, up to 2s */ /* XXX check sc_probe */ if (cv_timedwait(&fdc->sc_cv, &fdc->sc_mtx, 2 * hz) != EWOULDBLOCK){ #ifdef FD_DEBUG /* XXX */ printf("fdprobe: got intr\n"); #endif } 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); mutex_exit(&fdc->sc_mtx); #if defined(bebox) /* XXX What is this about? --thorpej@NetBSD.org */ if (n != 2 || (fdc->sc_status[1] != 0)) return 0; #else if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) return 0; #endif /* bebox */ return 1; } /* * Controller is working, and drive responded. Attach it. */ void fdattach(device_t parent, device_t self, void *aux) { struct fdc_softc *fdc = device_private(parent); struct fd_softc *fd = device_private(self); struct fdc_attach_args *fa = aux; const struct fd_type *type = fa->fa_deftype; int drive = fa->fa_drive; fd->sc_dev = self; callout_init(&fd->sc_motoron_ch, 0); callout_init(&fd->sc_motoroff_ch, 0); /* XXX Allow `flags' to override device type? */ if (type) aprint_normal(": %s, %d cyl, %d head, %d sec\n", type->name, type->cyls, type->heads, type->sectrac); else aprint_normal(": 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, device_xname(fd->sc_dev), &fddkdriver); disk_attach(&fd->sc_dk); /* * Establish a mountroot hook. */ fd->sc_roothook = mountroothook_establish(fd_mountroot_hook, fd->sc_dev); rnd_attach_source(&fd->rnd_source, device_xname(fd->sc_dev), RND_TYPE_DISK, RND_FLAG_DEFAULT); fd_set_geometry(fd); if (!pmf_device_register(self, NULL, NULL)) aprint_error_dev(self, "cannot set power mgmt handler\n"); } static int fddetach(device_t self, int flags) { struct fd_softc *fd = device_private(self); int bmaj, cmaj, i, mn; fd_motor_off(fd); /* locate the major number */ bmaj = bdevsw_lookup_major(&fd_bdevsw); cmaj = cdevsw_lookup_major(&fd_cdevsw); /* Nuke the vnodes for any open instances. */ for (i = 0; i < MAXPARTITIONS; i++) { mn = DISKMINOR(device_unit(self), i); vdevgone(bmaj, mn, mn, VBLK); vdevgone(cmaj, mn, mn, VCHR); } pmf_device_deregister(self); #if 0 /* XXX need to undo at detach? */ fd_set_geometry(fd); #endif rnd_detach_source(&fd->rnd_source); disk_detach(&fd->sc_dk); disk_destroy(&fd->sc_dk); /* Kill off any queued buffers. */ bufq_drain(fd->sc_q); bufq_free(fd->sc_q); callout_destroy(&fd->sc_motoroff_ch); callout_destroy(&fd->sc_motoron_ch); return 0; } #if defined(i386) || defined(x86_64) /* * Translate nvram type into internal data structure. Return NULL for * none/unknown/unusable. */ const struct fd_type * fd_nvtotype(const char *fdc, int nvraminfo, int drive) { int type; type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; switch (type) { case NVRAM_DISKETTE_NONE: return NULL; case NVRAM_DISKETTE_12M: return &fd_types[1]; case NVRAM_DISKETTE_TYPE5: case NVRAM_DISKETTE_TYPE6: /* XXX We really ought to handle 2.88MB format. */ case NVRAM_DISKETTE_144M: #if NMCA > 0 if (MCA_system) return &mca_fd_types[0]; else #endif /* NMCA > 0 */ return &fd_types[0]; case NVRAM_DISKETTE_360K: return &fd_types[3]; case NVRAM_DISKETTE_720K: #if NMCA > 0 if (MCA_system) return &mca_fd_types[1]; else #endif /* NMCA > 0 */ return &fd_types[4]; default: printf("%s: drive %d: unknown device type 0x%x\n", fdc, drive, type); return NULL; } } #endif /* i386 || x86_64 */ static const struct fd_type * fd_dev_to_type(struct fd_softc *fd, dev_t dev) { u_int type = FDTYPE(dev); if (type > __arraycount(fd_types)) return NULL; return type ? &fd_types[type - 1] : fd->sc_deftype; } void fdstrategy(struct buf *bp) { struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(bp->b_dev)); struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); int sz; /* 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 %llu b_bcount %d blkno %llu cylin %d " "sz %d\n", (unsigned long long)bp->b_blkno, bp->b_bcount, (unsigned long long)fd->sc_blkno, bp->b_cylinder, sz); #endif /* Queue transfer on drive, activate drive and controller if idle. */ mutex_enter(&fdc->sc_mtx); 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 { if (fdc->sc_state == DEVIDLE) { printf("fdstrategy: controller inactive\n"); fdcstart(fdc); } } #endif mutex_exit(&fdc->sc_mtx); return; done: /* Toss transfer; we're done early. */ bp->b_resid = bp->b_bcount; biodone(bp); } void fdstart(struct fd_softc *fd) { struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); int active = !TAILQ_EMPTY(&fdc->sc_drives); KASSERT(mutex_owned(&fdc->sc_mtx)); /* 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(struct fd_softc *fd, struct buf *bp) { struct fdc_softc *fdc = device_private(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 (TAILQ_NEXT(fd, sc_drivechain) && ++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; rnd_add_uint32(&fd->rnd_source, bp->b_blkno); 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_t dev, struct uio *uio, int flags) { return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); } int fdwrite(dev_t dev, struct uio *uio, int flags) { return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); } void fd_set_motor(struct fdc_softc *fdc, int reset) { struct fd_softc *fd; u_char status; int n; if ((fd = TAILQ_FIRST(&fdc->sc_drives)) != 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_1(fdc->sc_iot, fdc->sc_ioh, fdout, status); } void fd_motor_off(void *arg) { struct fd_softc *fd = arg; struct fdc_softc *fdc; fdc = device_private(device_parent(fd->sc_dev)); mutex_enter(&fdc->sc_mtx); fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); fd_set_motor(fdc, 0); mutex_exit(&fdc->sc_mtx); } void fd_motor_on(void *arg) { struct fd_softc *fd = arg; struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); mutex_enter(&fdc->sc_mtx); fd->sc_flags &= ~FD_MOTOR_WAIT; if (TAILQ_FIRST(&fdc->sc_drives) == fd && fdc->sc_state == MOTORWAIT) (void)fdcintr1(fdc); mutex_exit(&fdc->sc_mtx); } int fdcresult(struct fdc_softc *fdc) { bus_space_tag_t iot = fdc->sc_iot; bus_space_handle_t ioh = fdc->sc_ioh; u_char i; u_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(bus_space_tag_t iot, bus_space_handle_t ioh, u_char x) { u_char i; u_int j = 100000; for (; j; j--) { i = bus_space_read_1(iot, ioh, fdsts) & (NE7_DIO | NE7_RQM); if (i == NE7_RQM) { bus_space_write_1(iot, ioh, fddata, x); return 0; } delay(10); } return -1; } int fdopen(dev_t dev, int flags, int mode, struct lwp *l) { struct fd_softc *fd; const struct fd_type *type; fd = device_lookup_private(&fd_cd, FDUNIT(dev)); if (fd == NULL) 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; fd_set_geometry(fd); return 0; } int fdclose(dev_t dev, int flags, int mode, struct lwp *l) { struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); fd->sc_flags &= ~FD_OPEN; fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); return 0; } void fdcstart(struct fdc_softc *fdc) { KASSERT(mutex_owned(&fdc->sc_mtx)); if (!device_is_active(fdc->sc_dev)) return; #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)fdcintr1(fdc); } static void fdcpstatus(int n, struct fdc_softc *fdc) { char bits[64]; switch (n) { case 0: printf("\n"); break; case 2: snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); break; case 7: snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); printf(" (st0 %s", bits); snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); printf(" st1 %s", bits); snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); printf(" st2 %s", 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 fdcstatus(device_t dv, int n, const char *s) { struct fdc_softc *fdc = device_private(device_parent(dv)); if (n == 0) { out_fdc(fdc->sc_iot, fdc->sc_ioh, NE7CMD_SENSEI); (void) fdcresult(fdc); n = 2; } fdcpstatus(n, fdc); aprint_normal_dev(dv, "%s", s); } void fdctimeout(void *arg) { struct fdc_softc *fdc = arg; struct fd_softc *fd = TAILQ_FIRST(&fdc->sc_drives); mutex_enter(&fdc->sc_mtx); #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)fdcintr1(fdc); mutex_exit(&fdc->sc_mtx); } static int fdcintr1(struct fdc_softc *fdc) { #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; KASSERT(mutex_owned(&fdc->sc_mtx)); if (fdc->sc_state == PROBING) { #ifdef DEBUG printf("fdcintr: got probe interrupt\n"); #endif fdc->sc_probe++; goto out; } loop: /* Is there a drive for the controller to do a transfer with? */ fd = TAILQ_FIRST(&fdc->sc_drives); if (fd == NULL) { fdc->sc_state = DEVIDLE; goto out; } /* 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; 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 = uimin(nblks, fd->sc_bcount / FDC_BSIZE); nblks = uimin(nblks, fdc->sc_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 { int block; block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; if (block != fd->sc_blkno) { printf("fdcintr: block %d != blkno " "%" PRId64 "\n", block, fd->sc_blkno); #ifdef DDB Debugger(); #endif } } #endif read = bp->b_flags & B_READ ? DMAMODE_READ : DMAMODE_WRITE; isa_dmastart(fdc->sc_ic, fdc->sc_drq, (char *)bp->b_data + fd->sc_skip, fd->sc_nbytes, NULL, read | DMAMODE_DEMAND, BUS_DMA_NOWAIT); bus_space_write_1(iot, fdc->sc_fdctlioh, 0, 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 */ callout_reset(&fdc->sc_intr_ch, hz / 50, fdcintrcb, fdc); 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: isa_dmaabort(fdc->sc_ic, fdc->sc_drq); /* FALLTHROUGH */ 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) { isa_dmaabort(fdc->sc_ic, fdc->sc_drq); #ifdef FD_DEBUG fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? "read failed" : "write failed"); printf("blkno %llu nblks %d\n", (unsigned long long)fd->sc_blkno, fd->sc_nblks); #endif fdcretry(fdc); goto loop; } isa_dmadone(fdc->sc_ic, fdc->sc_drq); if (fdc->sc_errors) { diskerr(bp, "fd", "soft error (corrected)", LOG_PRINTF, fd->sc_skip / FDC_BSIZE, NULL); printf("\n"); 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 */ callout_reset(&fdc->sc_intr_ch, hz / 30, fdcintrcb, fdc); 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; } #undef st0 #undef cyl out: cv_signal(&fdc->sc_cv); return 1; } static void fdcintrcb(void *arg) { (void)fdcintr(arg); } int fdcintr(void *arg) { int rc; struct fdc_softc *fdc = arg; mutex_enter(&fdc->sc_mtx); rc = fdcintr1(fdc); mutex_exit(&fdc->sc_mtx); return rc; } void fdcretry(struct fdc_softc *fdc) { struct fd_softc *fd; struct buf *bp; fd = TAILQ_FIRST(&fdc->sc_drives); 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, NULL); fdcpstatus(7, fdc); } bp->b_error = EIO; fdfinish(fd, bp); } fdc->sc_errors++; } int fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) { struct fd_softc *fd = device_lookup_private(&fd_cd, FDUNIT(dev)); struct fdformat_parms *form_parms; struct fdformat_cmd *form_cmd; struct ne7_fd_formb *fd_formb; struct disklabel *lp = fd->sc_dk.dk_label; int error; unsigned int scratch; int il[FD_MAX_NSEC + 1]; int i, j; #ifdef __HAVE_OLD_DISKLABEL struct disklabel newlabel; #endif switch (cmd) { case DIOCGPARTINFO: case DIOCGDINFO: #ifdef __HAVE_OLD_DISKLABEL case ODIOCGDINFO: #endif memset(lp, 0, sizeof(*lp)); lp->d_type = DKTYPE_FLOPPY; lp->d_secsize = FDC_BSIZE; lp->d_nsectors = fd->sc_type->sectrac; lp->d_ntracks = fd->sc_type->heads; lp->d_ncylinders = fd->sc_type->cyls; lp->d_secpercyl = fd->sc_type->seccyl; lp->d_secperunit = fd->sc_type->size; if (readdisklabel(dev, fdstrategy, lp, NULL) != NULL) return EINVAL; break; } error = disk_ioctl(&fd->sc_dk, dev, cmd, addr, flag, l); if (error != EPASSTHROUGH) return error; switch (cmd) { case DIOCWLABEL: if ((flag & FWRITE) == 0) return EBADF; /* XXX do something */ return 0; case DIOCWDINFO: #ifdef __HAVE_OLD_DISKLABEL case ODIOCWDINFO: #endif { if ((flag & FWRITE) == 0) return EBADF; #ifdef __HAVE_OLD_DISKLABEL if (cmd == ODIOCWDINFO) { memset(&newlabel, 0, sizeof newlabel); memcpy(&newlabel, addr, sizeof (struct olddisklabel)); addr = &newlabel; } #endif error = setdisklabel(lp, addr, 0, NULL); if (error) return error; error = writedisklabel(dev, fdstrategy, lp, 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 = kmem_alloc(sizeof(*fd_formb), KM_SLEEP); 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); kmem_free(fd_formb, sizeof(*fd_formb)); 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_t dev, struct ne7_fd_formb *finfo, struct lwp *l) { int rv = 0; struct fd_softc *fd = device_lookup_private(&fd_cd, 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 == NULL) return ENOBUFS; bp->b_cflags = BC_BUSY; bp->b_flags = B_PHYS | B_FORMAT; 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 FD_DEBUG printf("fdformat: blkno %" PRIx64 " count %x\n", bp->b_blkno, bp->b_bcount); #endif /* now do the format */ fdstrategy(bp); /* ...and wait for it to complete */ rv = biowait(bp); putiobuf(bp); return rv; } /* * Mountroot hook: prompt the user to enter the root file system * floppy. */ void fd_mountroot_hook(device_t dev) { int c; printf("Insert filesystem floppy and press return."); cnpollc(1); for (;;) { c = cngetc(); if ((c == '\r') || (c == '\n')) { printf("\n"); break; } } cnpollc(0); } static void fd_set_geometry(struct fd_softc *fd) { const struct fd_type *fdt; fdt = fd->sc_type; if (fdt == NULL) { fdt = fd->sc_deftype; if (fdt == NULL) return; } struct disk_geom *dg = &fd->sc_dk.dk_geom; memset(dg, 0, sizeof(*dg)); dg->dg_secperunit = fdt->size; dg->dg_nsectors = fdt->sectrac; switch (fdt->secsize) { case 2: dg->dg_secsize = 512; break; case 3: dg->dg_secsize = 1024; break; default: break; } dg->dg_ntracks = fdt->heads; dg->dg_ncylinders = fdt->cyls; disk_set_info(fd->sc_dev, &fd->sc_dk, NULL); }