/* $OpenBSD: wd.c,v 1.78 2010/04/11 16:58:06 kettenis Exp $ */ /* $NetBSD: wd.c,v 1.193 1999/02/28 17:15:27 explorer Exp $ */ /* * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. * * 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 Manuel Bouyer. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum and by Onno van der Linden. * * 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. */ #if 0 #include "rnd.h" #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 #if 0 #include "locators.h" #endif #define LBA48_THRESHOLD (0xfffffff) /* 128GB / DEV_BSIZE */ #define WDIORETRIES_SINGLE 4 /* number of retries before single-sector */ #define WDIORETRIES 5 /* number of retries before giving up */ #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ #define DEBUG_INTR 0x01 #define DEBUG_XFERS 0x02 #define DEBUG_STATUS 0x04 #define DEBUG_FUNCS 0x08 #define DEBUG_PROBE 0x10 #ifdef WDCDEBUG extern int wdcdebug_wd_mask; /* init'ed in ata_wdc.c */ #define WDCDEBUG_PRINT(args, level) do { \ if ((wdcdebug_wd_mask & (level)) != 0) \ printf args; \ } while (0) #else #define WDCDEBUG_PRINT(args, level) #endif struct wd_softc { /* General disk infos */ struct device sc_dev; struct disk sc_dk; struct buf sc_q; /* IDE disk soft states */ struct ata_bio sc_wdc_bio; /* current transfer */ struct buf *sc_bp; /* buf being transferred */ struct ata_drive_datas *drvp; /* Our controller's infos */ int openings; struct ataparams sc_params;/* drive characteristics found */ int sc_flags; #define WDF_LOCKED 0x01 #define WDF_WANTED 0x02 #define WDF_WLABEL 0x04 /* label is writable */ #define WDF_LABELLING 0x08 /* writing label */ /* * XXX Nothing resets this yet, but disk change sensing will when ATA-4 is * more fully implemented. */ #define WDF_LOADED 0x10 /* parameters loaded */ #define WDF_WAIT 0x20 /* waiting for resources */ #define WDF_LBA 0x40 /* using LBA mode */ #define WDF_LBA48 0x80 /* using 48-bit LBA mode */ u_int64_t sc_capacity; int cyl; /* actual drive parameters */ int heads; int sectors; int retries; /* number of xfer retry */ struct timeout sc_restart_timeout; void *sc_sdhook; }; #define sc_drive sc_wdc_bio.drive #define sc_mode sc_wdc_bio.mode #define sc_multi sc_wdc_bio.multi int wdprobe(struct device *, void *, void *); void wdattach(struct device *, struct device *, void *); int wddetach(struct device *, int); int wdactivate(struct device *, int); int wdprint(void *, char *); struct cfattach wd_ca = { sizeof(struct wd_softc), wdprobe, wdattach, wddetach, wdactivate }; struct cfdriver wd_cd = { NULL, "wd", DV_DISK }; void wdgetdefaultlabel(struct wd_softc *, struct disklabel *); int wdgetdisklabel(dev_t dev, struct wd_softc *, struct disklabel *, int); void wdstrategy(struct buf *); void wdstart(void *); void __wdstart(struct wd_softc*, struct buf *); void wdrestart(void *); int wd_get_params(struct wd_softc *, u_int8_t, struct ataparams *); void wd_flushcache(struct wd_softc *, int); void wd_shutdown(void *); struct dkdriver wddkdriver = { wdstrategy }; /* XXX: these should go elsewhere */ cdev_decl(wd); bdev_decl(wd); #define wdlock(wd) disk_lock(&(wd)->sc_dk) #define wdunlock(wd) disk_unlock(&(wd)->sc_dk) #define wdlookup(unit) (struct wd_softc *)device_lookup(&wd_cd, (unit)) int wdprobe(struct device *parent, void *match_, void *aux) { struct ata_atapi_attach *aa_link = aux; struct cfdata *match = match_; if (aa_link == NULL) return 0; if (aa_link->aa_type != T_ATA) return 0; if (match->cf_loc[0] != -1 && match->cf_loc[0] != aa_link->aa_channel) return 0; if (match->cf_loc[1] != -1 && match->cf_loc[1] != aa_link->aa_drv_data->drive) return 0; return 1; } void wdattach(struct device *parent, struct device *self, void *aux) { struct wd_softc *wd = (void *)self; struct ata_atapi_attach *aa_link= aux; struct wdc_command wdc_c; int i, blank; char buf[41], c, *p, *q; WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE); wd->openings = aa_link->aa_openings; wd->drvp = aa_link->aa_drv_data; strlcpy(wd->drvp->drive_name, wd->sc_dev.dv_xname, sizeof(wd->drvp->drive_name)); wd->drvp->cf_flags = wd->sc_dev.dv_cfdata->cf_flags; if ((NERRS_MAX - 2) > 0) wd->drvp->n_dmaerrs = NERRS_MAX - 2; else wd->drvp->n_dmaerrs = 0; /* read our drive info */ if (wd_get_params(wd, at_poll, &wd->sc_params) != 0) { printf("%s: IDENTIFY failed\n", wd->sc_dev.dv_xname); return; } for (blank = 0, p = wd->sc_params.atap_model, q = buf, i = 0; i < sizeof(wd->sc_params.atap_model); i++) { c = *p++; if (c == '\0') break; if (c != ' ') { if (blank) { *q++ = ' '; blank = 0; } *q++ = c; } else blank = 1; } *q++ = '\0'; printf(": <%s>\n", buf); wdc_probe_caps(wd->drvp, &wd->sc_params); wdc_print_caps(wd->drvp); if ((wd->sc_params.atap_multi & 0xff) > 1) { wd->sc_multi = wd->sc_params.atap_multi & 0xff; } else { wd->sc_multi = 1; } printf("%s: %d-sector PIO,", wd->sc_dev.dv_xname, wd->sc_multi); /* use 48-bit LBA if enabled */ /* XXX: shall we use it if drive capacity < 137Gb? */ if ((wd->sc_params.atap_cmd2_en & ATAPI_CMD2_48AD) != 0) wd->sc_flags |= WDF_LBA48; /* Prior to ATA-4, LBA was optional. */ if ((wd->sc_params.atap_capabilities1 & WDC_CAP_LBA) != 0) wd->sc_flags |= WDF_LBA; #if 0 /* ATA-4 requires LBA. */ if (wd->sc_params.atap_ataversion != 0xffff && wd->sc_params.atap_ataversion >= WDC_VER_ATA4) wd->sc_flags |= WDF_LBA; #endif if ((wd->sc_flags & WDF_LBA48) != 0) { wd->sc_capacity = (((u_int64_t)wd->sc_params.atap_max_lba[3] << 48) | ((u_int64_t)wd->sc_params.atap_max_lba[2] << 32) | ((u_int64_t)wd->sc_params.atap_max_lba[1] << 16) | (u_int64_t)wd->sc_params.atap_max_lba[0]); printf(" LBA48, %lluMB, %llu sectors\n", wd->sc_capacity / (1048576 / DEV_BSIZE), wd->sc_capacity); } else if ((wd->sc_flags & WDF_LBA) != 0) { wd->sc_capacity = (wd->sc_params.atap_capacity[1] << 16) | wd->sc_params.atap_capacity[0]; printf(" LBA, %lluMB, %llu sectors\n", wd->sc_capacity / (1048576 / DEV_BSIZE), wd->sc_capacity); } else { wd->sc_capacity = wd->sc_params.atap_cylinders * wd->sc_params.atap_heads * wd->sc_params.atap_sectors; printf(" CHS, %lluMB, %d cyl, %d head, %d sec, %llu sectors\n", wd->sc_capacity / (1048576 / DEV_BSIZE), wd->sc_params.atap_cylinders, wd->sc_params.atap_heads, wd->sc_params.atap_sectors, wd->sc_capacity); } WDCDEBUG_PRINT(("%s: atap_dmatiming_mimi=%d, atap_dmatiming_recom=%d\n", self->dv_xname, wd->sc_params.atap_dmatiming_mimi, wd->sc_params.atap_dmatiming_recom), DEBUG_PROBE); /* use read look ahead if supported */ if (wd->sc_params.atap_cmd_set1 & WDC_CMD1_AHEAD) { bzero(&wdc_c, sizeof(struct wdc_command)); wdc_c.r_command = SET_FEATURES; wdc_c.r_precomp = WDSF_READAHEAD_EN; wdc_c.timeout = 1000; wdc_c.flags = at_poll; if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { printf("%s: enable look ahead command didn't " "complete\n", wd->sc_dev.dv_xname); } } /* use write cache if supported */ if (wd->sc_params.atap_cmd_set1 & WDC_CMD1_CACHE) { bzero(&wdc_c, sizeof(struct wdc_command)); wdc_c.r_command = SET_FEATURES; wdc_c.r_precomp = WDSF_EN_WR_CACHE; wdc_c.timeout = 1000; wdc_c.flags = at_poll; if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { printf("%s: enable write cache command didn't " "complete\n", wd->sc_dev.dv_xname); } } /* * FREEZE LOCK the drive so malicous users can't lock it on us. * As there is no harm in issuing this to drives that don't * support the security feature set we just send it, and don't * bother checking if the drive sends a command abort to tell us it * doesn't support it. */ bzero(&wdc_c, sizeof(struct wdc_command)); wdc_c.r_command = WDCC_SEC_FREEZE_LOCK; wdc_c.timeout = 1000; wdc_c.flags = at_poll; if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { printf("%s: freeze lock command didn't complete\n", wd->sc_dev.dv_xname); } /* * Initialize and attach the disk structure. */ wd->sc_dk.dk_driver = &wddkdriver; wd->sc_dk.dk_name = wd->sc_dev.dv_xname; disk_attach(&wd->sc_dk); wd->sc_wdc_bio.lp = wd->sc_dk.dk_label; wd->sc_sdhook = shutdownhook_establish(wd_shutdown, wd); if (wd->sc_sdhook == NULL) printf("%s: WARNING: unable to establish shutdown hook\n", wd->sc_dev.dv_xname); timeout_set(&wd->sc_restart_timeout, wdrestart, wd); } int wdactivate(struct device *self, int act) { struct wd_softc *wd = (void *)self; struct wdc_command wdc_c; int rv = 0; switch (act) { case DVACT_ACTIVATE: break; case DVACT_DEACTIVATE: /* * Nothing to do; we key off the device's DVF_ACTIVATE. */ break; case DVACT_SUSPEND: bzero(&wdc_c, sizeof(struct wdc_command)); wdc_c.r_command = WDCC_STANDBY_IMMED; wdc_c.timeout = 1000; wdc_c.flags = at_poll; if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { printf("%s: enter standby command didn't complete\n", wd->sc_dev.dv_xname); } break; } return (rv); } int wddetach(struct device *self, int flags) { struct wd_softc *sc = (struct wd_softc *)self; struct buf *dp, *bp; int s, bmaj, cmaj, mn; /* Remove unprocessed buffers from queue */ s = splbio(); for (dp = &sc->sc_q; (bp = dp->b_actf) != NULL; ) { dp->b_actf = bp->b_actf; bp->b_error = ENXIO; bp->b_flags |= B_ERROR; biodone(bp); } splx(s); /* Locate the lowest minor number to be detached. */ mn = DISKMINOR(self->dv_unit, 0); for (bmaj = 0; bmaj < nblkdev; bmaj++) if (bdevsw[bmaj].d_open == wdopen) vdevgone(bmaj, mn, mn + MAXPARTITIONS - 1, VBLK); for (cmaj = 0; cmaj < nchrdev; cmaj++) if (cdevsw[cmaj].d_open == wdopen) vdevgone(cmaj, mn, mn + MAXPARTITIONS - 1, VCHR); /* Get rid of the shutdown hook. */ if (sc->sc_sdhook != NULL) shutdownhook_disestablish(sc->sc_sdhook); /* Detach disk. */ disk_detach(&sc->sc_dk); return (0); } /* * Read/write routine for a buffer. Validates the arguments and schedules the * transfer. Does not wait for the transfer to complete. */ void wdstrategy(struct buf *bp) { struct wd_softc *wd; int s; wd = wdlookup(DISKUNIT(bp->b_dev)); if (wd == NULL) { bp->b_error = ENXIO; goto bad; } WDCDEBUG_PRINT(("wdstrategy (%s)\n", wd->sc_dev.dv_xname), DEBUG_XFERS); /* Valid request? */ if (bp->b_blkno < 0 || (bp->b_bcount % wd->sc_dk.dk_label->d_secsize) != 0 || (bp->b_bcount / wd->sc_dk.dk_label->d_secsize) >= (1 << NBBY)) { bp->b_error = EINVAL; goto bad; } /* If device invalidated (e.g. media change, door open), error. */ if ((wd->sc_flags & WDF_LOADED) == 0) { bp->b_error = EIO; goto bad; } /* If it's a null transfer, return immediately. */ if (bp->b_bcount == 0) goto done; /* * Do bounds checking, adjust transfer. if error, process. * If end of partition, just return. */ if (bounds_check_with_label(bp, wd->sc_dk.dk_label, (wd->sc_flags & (WDF_WLABEL|WDF_LABELLING)) != 0) <= 0) goto done; /* Queue transfer on drive, activate drive and controller if idle. */ s = splbio(); disksort(&wd->sc_q, bp); wdstart(wd); splx(s); device_unref(&wd->sc_dev); return; bad: bp->b_flags |= B_ERROR; done: /* Toss transfer; we're done early. */ bp->b_resid = bp->b_bcount; s = splbio(); biodone(bp); splx(s); if (wd != NULL) device_unref(&wd->sc_dev); } /* * Queue a drive for I/O. */ void wdstart(void *arg) { struct wd_softc *wd = arg; struct buf *dp, *bp = NULL; WDCDEBUG_PRINT(("wdstart %s\n", wd->sc_dev.dv_xname), DEBUG_XFERS); while (wd->openings > 0) { /* Is there a buf for us ? */ dp = &wd->sc_q; if ((bp = dp->b_actf) == NULL) /* yes, an assign */ return; dp->b_actf = bp->b_actf; /* * Make the command. First lock the device */ wd->openings--; wd->retries = 0; __wdstart(wd, bp); } } void __wdstart(struct wd_softc *wd, struct buf *bp) { daddr64_t nblks; wd->sc_wdc_bio.blkno = bp->b_blkno + DL_GETPOFFSET(&wd->sc_dk.dk_label->d_partitions[DISKPART(bp->b_dev)]); wd->sc_wdc_bio.blkno /= (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); wd->sc_wdc_bio.blkdone =0; wd->sc_bp = bp; /* * If we're retrying, retry in single-sector mode. This will give us * the sector number of the problem, and will eventually allow the * transfer to succeed. */ if (wd->retries >= WDIORETRIES_SINGLE) wd->sc_wdc_bio.flags = ATA_SINGLE; else wd->sc_wdc_bio.flags = 0; nblks = bp->b_bcount / wd->sc_dk.dk_label->d_secsize; if ((wd->sc_flags & WDF_LBA48) && /* use LBA48 only if really need */ ((wd->sc_wdc_bio.blkno + nblks - 1 > LBA48_THRESHOLD) || (nblks > 0xff))) wd->sc_wdc_bio.flags |= ATA_LBA48; if (wd->sc_flags & WDF_LBA) wd->sc_wdc_bio.flags |= ATA_LBA; if (bp->b_flags & B_READ) wd->sc_wdc_bio.flags |= ATA_READ; wd->sc_wdc_bio.bcount = bp->b_bcount; wd->sc_wdc_bio.databuf = bp->b_data; wd->sc_wdc_bio.wd = wd; /* Instrumentation. */ disk_busy(&wd->sc_dk); switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { case WDC_TRY_AGAIN: timeout_add_sec(&wd->sc_restart_timeout, 1); break; case WDC_QUEUED: break; case WDC_COMPLETE: /* * This code is never executed because we never set * the ATA_POLL flag above */ #if 0 if (wd->sc_wdc_bio.flags & ATA_POLL) wddone(wd); #endif break; default: panic("__wdstart: bad return code from wdc_ata_bio()"); } } void wddone(void *v) { struct wd_softc *wd = v; struct buf *bp = wd->sc_bp; char buf[256], *errbuf = buf; WDCDEBUG_PRINT(("wddone %s\n", wd->sc_dev.dv_xname), DEBUG_XFERS); bp->b_resid = wd->sc_wdc_bio.bcount; errbuf[0] = '\0'; switch (wd->sc_wdc_bio.error) { case ERR_NODEV: bp->b_flags |= B_ERROR; bp->b_error = ENXIO; break; case ERR_DMA: errbuf = "DMA error"; goto retry; case ERR_DF: errbuf = "device fault"; goto retry; case TIMEOUT: errbuf = "device timeout"; goto retry; case ERROR: /* Don't care about media change bits */ if (wd->sc_wdc_bio.r_error != 0 && (wd->sc_wdc_bio.r_error & ~(WDCE_MC | WDCE_MCR)) == 0) goto noerror; ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf, sizeof buf); retry: /* Just reset and retry. Can we do more ? */ wdc_reset_channel(wd->drvp); diskerr(bp, "wd", errbuf, LOG_PRINTF, wd->sc_wdc_bio.blkdone, wd->sc_dk.dk_label); if (wd->retries++ < WDIORETRIES) { printf(", retrying\n"); timeout_add(&wd->sc_restart_timeout, RECOVERYTIME); return; } printf("\n"); bp->b_flags |= B_ERROR; bp->b_error = EIO; break; case NOERROR: noerror: if ((wd->sc_wdc_bio.flags & ATA_CORR) || wd->retries > 0) printf("%s: soft error (corrected)\n", wd->sc_dev.dv_xname); } disk_unbusy(&wd->sc_dk, (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); biodone(bp); wd->openings++; wdstart(wd); } void wdrestart(void *v) { struct wd_softc *wd = v; struct buf *bp = wd->sc_bp; int s; WDCDEBUG_PRINT(("wdrestart %s\n", wd->sc_dev.dv_xname), DEBUG_XFERS); s = splbio(); disk_unbusy(&wd->sc_dk, 0, (bp->b_flags & B_READ)); __wdstart(v, bp); splx(s); } int wdread(dev_t dev, struct uio *uio, int flags) { WDCDEBUG_PRINT(("wdread\n"), DEBUG_XFERS); return (physio(wdstrategy, NULL, dev, B_READ, minphys, uio)); } int wdwrite(dev_t dev, struct uio *uio, int flags) { WDCDEBUG_PRINT(("wdwrite\n"), DEBUG_XFERS); return (physio(wdstrategy, NULL, dev, B_WRITE, minphys, uio)); } int wdopen(dev_t dev, int flag, int fmt, struct proc *p) { struct wd_softc *wd; int unit, part; int error; WDCDEBUG_PRINT(("wdopen\n"), DEBUG_FUNCS); unit = DISKUNIT(dev); wd = wdlookup(unit); if (wd == NULL) return ENXIO; /* * If this is the first open of this device, add a reference * to the adapter. */ if ((error = wdlock(wd)) != 0) goto bad4; if (wd->sc_dk.dk_openmask != 0) { /* * If any partition is open, but the disk has been invalidated, * disallow further opens. */ if ((wd->sc_flags & WDF_LOADED) == 0) { error = EIO; goto bad3; } } else { if ((wd->sc_flags & WDF_LOADED) == 0) { wd->sc_flags |= WDF_LOADED; /* Load the physical device parameters. */ wd_get_params(wd, AT_WAIT, &wd->sc_params); /* Load the partition info if not already loaded. */ if (wdgetdisklabel(dev, wd, wd->sc_dk.dk_label, 0) == EIO) { error = EIO; goto bad; } } } part = DISKPART(dev); /* Check that the partition exists. */ if (part != RAW_PART && (part >= wd->sc_dk.dk_label->d_npartitions || wd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { error = ENXIO; goto bad; } /* Insure only one open at a time. */ switch (fmt) { case S_IFCHR: wd->sc_dk.dk_copenmask |= (1 << part); break; case S_IFBLK: wd->sc_dk.dk_bopenmask |= (1 << part); break; } wd->sc_dk.dk_openmask = wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; wdunlock(wd); device_unref(&wd->sc_dev); return 0; bad: if (wd->sc_dk.dk_openmask == 0) { } bad3: wdunlock(wd); bad4: device_unref(&wd->sc_dev); return error; } int wdclose(dev_t dev, int flag, int fmt, struct proc *p) { struct wd_softc *wd; int part = DISKPART(dev); int error = 0; wd = wdlookup(DISKUNIT(dev)); if (wd == NULL) return ENXIO; WDCDEBUG_PRINT(("wdclose\n"), DEBUG_FUNCS); if ((error = wdlock(wd)) != 0) goto exit; switch (fmt) { case S_IFCHR: wd->sc_dk.dk_copenmask &= ~(1 << part); break; case S_IFBLK: wd->sc_dk.dk_bopenmask &= ~(1 << part); break; } wd->sc_dk.dk_openmask = wd->sc_dk.dk_copenmask | wd->sc_dk.dk_bopenmask; if (wd->sc_dk.dk_openmask == 0) { wd_flushcache(wd, 0); /* XXXX Must wait for I/O to complete! */ } wdunlock(wd); exit: device_unref(&wd->sc_dev); return (error); } void wdgetdefaultlabel(struct wd_softc *wd, struct disklabel *lp) { WDCDEBUG_PRINT(("wdgetdefaultlabel\n"), DEBUG_FUNCS); bzero(lp, sizeof(struct disklabel)); lp->d_secsize = DEV_BSIZE; DL_SETDSIZE(lp, wd->sc_capacity); lp->d_ntracks = wd->sc_params.atap_heads; lp->d_nsectors = wd->sc_params.atap_sectors; lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; lp->d_ncylinders = DL_GETDSIZE(lp) / lp->d_secpercyl; if (wd->drvp->ata_vers == -1) { lp->d_type = DTYPE_ST506; strncpy(lp->d_typename, "ST506/MFM/RLL", sizeof lp->d_typename); } else { lp->d_type = DTYPE_ESDI; strncpy(lp->d_typename, "ESDI/IDE disk", sizeof lp->d_typename); } /* XXX - user viscopy() like sd.c */ strncpy(lp->d_packname, wd->sc_params.atap_model, sizeof lp->d_packname); lp->d_rpm = 3600; lp->d_interleave = 1; lp->d_flags = 0; lp->d_version = 1; lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); } /* * Fabricate a default disk label, and try to read the correct one. */ int wdgetdisklabel(dev_t dev, struct wd_softc *wd, struct disklabel *lp, int spoofonly) { int error; WDCDEBUG_PRINT(("wdgetdisklabel\n"), DEBUG_FUNCS); wdgetdefaultlabel(wd, lp); if (wd->drvp->state > RECAL) wd->drvp->drive_flags |= DRIVE_RESET; error = readdisklabel(DISKLABELDEV(dev), wdstrategy, lp, spoofonly); if (wd->drvp->state > RECAL) wd->drvp->drive_flags |= DRIVE_RESET; return (error); } int wdioctl(dev_t dev, u_long xfer, caddr_t addr, int flag, struct proc *p) { struct wd_softc *wd; struct disklabel *lp; int error = 0; WDCDEBUG_PRINT(("wdioctl\n"), DEBUG_FUNCS); wd = wdlookup(DISKUNIT(dev)); if (wd == NULL) return ENXIO; if ((wd->sc_flags & WDF_LOADED) == 0) { error = EIO; goto exit; } switch (xfer) { case DIOCRLDINFO: lp = malloc(sizeof(*lp), M_TEMP, M_WAITOK); wdgetdisklabel(dev, wd, lp, 0); bcopy(lp, wd->sc_dk.dk_label, sizeof(*lp)); free(lp, M_TEMP); goto exit; case DIOCGPDINFO: wdgetdisklabel(dev, wd, (struct disklabel *)addr, 1); goto exit; case DIOCGDINFO: *(struct disklabel *)addr = *(wd->sc_dk.dk_label); goto exit; case DIOCGPART: ((struct partinfo *)addr)->disklab = wd->sc_dk.dk_label; ((struct partinfo *)addr)->part = &wd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; goto exit; case DIOCWDINFO: case DIOCSDINFO: if ((flag & FWRITE) == 0) { error = EBADF; goto exit; } if ((error = wdlock(wd)) != 0) goto exit; wd->sc_flags |= WDF_LABELLING; error = setdisklabel(wd->sc_dk.dk_label, (struct disklabel *)addr, /*wd->sc_dk.dk_openmask : */0); if (error == 0) { if (wd->drvp->state > RECAL) wd->drvp->drive_flags |= DRIVE_RESET; if (xfer == DIOCWDINFO) error = writedisklabel(DISKLABELDEV(dev), wdstrategy, wd->sc_dk.dk_label); } wd->sc_flags &= ~WDF_LABELLING; wdunlock(wd); goto exit; case DIOCWLABEL: if ((flag & FWRITE) == 0) { error = EBADF; goto exit; } if (*(int *)addr) wd->sc_flags |= WDF_WLABEL; else wd->sc_flags &= ~WDF_WLABEL; goto exit; #ifdef notyet case DIOCWFORMAT: if ((flag & FWRITE) == 0) return EBADF; { struct format_op *fop; struct iovec aiov; struct uio auio; fop = (struct format_op *)addr; aiov.iov_base = fop->df_buf; aiov.iov_len = fop->df_count; auio.uio_iov = &aiov; auio.uio_iovcnt = 1; auio.uio_resid = fop->df_count; auio.uio_segflg = 0; auio.uio_offset = fop->df_startblk * wd->sc_dk.dk_label->d_secsize; auio.uio_procp = p; error = physio(wdformat, NULL, dev, B_WRITE, minphys, &auio); fop->df_count -= auio.uio_resid; fop->df_reg[0] = wdc->sc_status; fop->df_reg[1] = wdc->sc_error; goto exit; } #endif default: error = wdc_ioctl(wd->drvp, xfer, addr, flag, p); goto exit; } #ifdef DIAGNOSTIC panic("wdioctl: impossible"); #endif exit: device_unref(&wd->sc_dev); return (error); } #ifdef B_FORMAT int wdformat(struct buf *bp) { bp->b_flags |= B_FORMAT; return wdstrategy(bp); } #endif daddr64_t wdsize(dev_t dev) { struct wd_softc *wd; int part, omask; int64_t size; WDCDEBUG_PRINT(("wdsize\n"), DEBUG_FUNCS); wd = wdlookup(DISKUNIT(dev)); if (wd == NULL) return (-1); part = DISKPART(dev); omask = wd->sc_dk.dk_openmask & (1 << part); if (omask == 0 && wdopen(dev, 0, S_IFBLK, NULL) != 0) { size = -1; goto exit; } size = DL_GETPSIZE(&wd->sc_dk.dk_label->d_partitions[part]) * (wd->sc_dk.dk_label->d_secsize / DEV_BSIZE); if (omask == 0 && wdclose(dev, 0, S_IFBLK, NULL) != 0) size = -1; exit: device_unref(&wd->sc_dev); return (size); } /* #define WD_DUMP_NOT_TRUSTED if you just want to watch */ static int wddoingadump = 0; static int wddumprecalibrated = 0; static int wddumpmulti = 1; /* * Dump core after a system crash. */ int wddump(dev_t dev, daddr64_t blkno, caddr_t va, size_t size) { struct wd_softc *wd; /* disk unit to do the I/O */ struct disklabel *lp; /* disk's disklabel */ int unit, part; int nblks; /* total number of sectors left to write */ int err; char errbuf[256]; /* Check if recursive dump; if so, punt. */ if (wddoingadump) return EFAULT; wddoingadump = 1; unit = DISKUNIT(dev); wd = wdlookup(unit); if (wd == NULL) return ENXIO; part = DISKPART(dev); /* Make sure it was initialized. */ if (wd->drvp->state < READY) return ENXIO; /* Convert to disk sectors. Request must be a multiple of size. */ lp = wd->sc_dk.dk_label; if ((size % lp->d_secsize) != 0) return EFAULT; nblks = size / lp->d_secsize; blkno = blkno / (lp->d_secsize / DEV_BSIZE); /* Check transfer bounds against partition size. */ if ((blkno < 0) || ((blkno + nblks) > DL_GETPSIZE(&lp->d_partitions[part]))) return EINVAL; /* Offset block number to start of partition. */ blkno += DL_GETPOFFSET(&lp->d_partitions[part]); /* Recalibrate, if first dump transfer. */ if (wddumprecalibrated == 0) { wddumpmulti = wd->sc_multi; wddumprecalibrated = 1; wd->drvp->state = RECAL; } while (nblks > 0) { wd->sc_wdc_bio.blkno = blkno; wd->sc_wdc_bio.flags = ATA_POLL; if (wd->sc_flags & WDF_LBA48) wd->sc_wdc_bio.flags |= ATA_LBA48; if (wd->sc_flags & WDF_LBA) wd->sc_wdc_bio.flags |= ATA_LBA; wd->sc_wdc_bio.bcount = min(nblks, wddumpmulti) * lp->d_secsize; wd->sc_wdc_bio.databuf = va; wd->sc_wdc_bio.wd = wd; #ifndef WD_DUMP_NOT_TRUSTED switch (wdc_ata_bio(wd->drvp, &wd->sc_wdc_bio)) { case WDC_TRY_AGAIN: panic("wddump: try again"); break; case WDC_QUEUED: panic("wddump: polled command has been queued"); break; case WDC_COMPLETE: break; } switch(wd->sc_wdc_bio.error) { case TIMEOUT: printf("wddump: device timed out"); err = EIO; break; case ERR_DF: printf("wddump: drive fault"); err = EIO; break; case ERR_DMA: printf("wddump: DMA error"); err = EIO; break; case ERROR: errbuf[0] = '\0'; ata_perror(wd->drvp, wd->sc_wdc_bio.r_error, errbuf, sizeof errbuf); printf("wddump: %s", errbuf); err = EIO; break; case NOERROR: err = 0; break; default: panic("wddump: unknown error type"); } if (err != 0) { printf("\n"); return err; } #else /* WD_DUMP_NOT_TRUSTED */ /* Let's just talk about this first... */ printf("wd%d: dump addr 0x%x, cylin %d, head %d, sector %d\n", unit, va, cylin, head, sector); delay(500 * 1000); /* half a second */ #endif /* update block count */ nblks -= min(nblks, wddumpmulti); blkno += min(nblks, wddumpmulti); va += min(nblks, wddumpmulti) * lp->d_secsize; } wddoingadump = 0; return 0; } int wd_get_params(struct wd_softc *wd, u_int8_t flags, struct ataparams *params) { switch (ata_get_params(wd->drvp, flags, params)) { case CMD_AGAIN: return 1; case CMD_ERR: /* If we already have drive parameters, reuse them. */ if (wd->sc_params.atap_cylinders != 0) { if (params != &wd->sc_params) bcopy(&wd->sc_params, params, sizeof(struct ataparams)); return 0; } /* * We `know' there's a drive here; just assume it's old. * This geometry is only used to read the MBR and print a * (false) attach message. */ bzero(params, sizeof(struct ataparams)); strncpy(params->atap_model, "ST506", sizeof params->atap_model); params->atap_config = ATA_CFG_FIXED; params->atap_cylinders = 1024; params->atap_heads = 8; params->atap_sectors = 17; params->atap_multi = 1; params->atap_capabilities1 = params->atap_capabilities2 = 0; wd->drvp->ata_vers = -1; /* Mark it as pre-ATA */ return 0; case CMD_OK: return 0; default: panic("wd_get_params: bad return code from ata_get_params"); /* NOTREACHED */ } } void wd_flushcache(struct wd_softc *wd, int flags) { struct wdc_command wdc_c; if (wd->drvp->ata_vers < 4) /* WDCC_FLUSHCACHE is here since ATA-4 */ return; bzero(&wdc_c, sizeof(struct wdc_command)); wdc_c.r_command = (wd->sc_flags & WDF_LBA48 ? WDCC_FLUSHCACHE_EXT : WDCC_FLUSHCACHE); wdc_c.r_st_bmask = WDCS_DRDY; wdc_c.r_st_pmask = WDCS_DRDY; if (flags != 0) { wdc_c.flags = AT_POLL; } else { wdc_c.flags = AT_WAIT; } wdc_c.timeout = 30000; /* 30s timeout */ if (wdc_exec_command(wd->drvp, &wdc_c) != WDC_COMPLETE) { printf("%s: flush cache command didn't complete\n", wd->sc_dev.dv_xname); } if (wdc_c.flags & AT_TIMEOU) { printf("%s: flush cache command timeout\n", wd->sc_dev.dv_xname); } if (wdc_c.flags & AT_DF) { printf("%s: flush cache command: drive fault\n", wd->sc_dev.dv_xname); } /* * Ignore error register, it shouldn't report anything else * than COMMAND ABORTED, which means the device doesn't support * flush cache */ } void wd_shutdown(void *arg) { struct wd_softc *wd = arg; wd_flushcache(wd, AT_POLL); }