/* $NetBSD: rd.c,v 1.33 2014/03/23 03:41:10 christos Exp $ */ /*- * Copyright (c) 1996-2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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) 1988 University of Utah. * Copyright (c) 1982, 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * 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. * * from: Utah $Hdr: rd.c 1.44 92/12/26$ * * @(#)rd.c 8.2 (Berkeley) 5/19/94 */ /* * CS80/SS80 disk driver */ #include __KERNEL_RCSID(0, "$NetBSD: rd.c,v 1.33 2014/03/23 03:41:10 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DEBUG int rddebug = 0xff; #define RDB_FOLLOW 0x01 #define RDB_STATUS 0x02 #define RDB_IDENT 0x04 #define RDB_IO 0x08 #define RDB_ASYNC 0x10 #define RDB_ERROR 0x80 #define DPRINTF(mask, str) if (rddebug & (mask)) printf str #else #define DPRINTF(mask, str) /* nothing */ #endif struct rd_softc { device_t sc_dev; gpib_chipset_tag_t sc_ic; gpib_handle_t sc_hdl; struct disk sc_dk; int sc_slave; /* GPIB slave */ int sc_punit; /* physical unit on slave */ int sc_flags; #define RDF_ALIVE 0x01 #define RDF_SEEK 0x02 #define RDF_SWAIT 0x04 #define RDF_OPENING 0x08 #define RDF_CLOSING 0x10 #define RDF_WANTED 0x20 #define RDF_WLABEL 0x40 u_int16_t sc_type; u_int8_t *sc_addr; int sc_resid; struct rd_iocmd sc_ioc; struct bufq_state *sc_tab; int sc_active; int sc_errcnt; struct callout sc_restart_ch; krndsource_t rnd_source; }; #define RDUNIT(dev) DISKUNIT(dev) #define RDPART(dev) DISKPART(dev) #define RDMAKEDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) #define RDLABELDEV(dev) (RDMAKEDEV(major(dev), RDUNIT(dev), RAW_PART)) #define RDRETRY 5 #define RDWAITC 1 /* min time for timeout in seconds */ int rderrthresh = RDRETRY-1; /* when to start reporting errors */ /* * Misc. HW description, indexed by sc_type. * Used for mapping 256-byte sectors for 512-byte sectors */ const struct rdidentinfo { u_int16_t ri_hwid; /* 2 byte HW id */ u_int16_t ri_maxunum; /* maximum allowed unit number */ const char *ri_desc; /* drive type description */ int ri_nbpt; /* DEV_BSIZE blocks per track */ int ri_ntpc; /* tracks per cylinder */ int ri_ncyl; /* cylinders per unit */ int ri_nblocks; /* DEV_BSIZE blocks on disk */ } rdidentinfo[] = { { RD7946AID, 0, "7945A", NRD7945ABPT, NRD7945ATRK, 968, 108416 }, { RD9134DID, 1, "9134D", NRD9134DBPT, NRD9134DTRK, 303, 29088 }, { RD9134LID, 1, "9122S", NRD9122SBPT, NRD9122STRK, 77, 1232 }, { RD7912PID, 0, "7912P", NRD7912PBPT, NRD7912PTRK, 572, 128128 }, { RD7914PID, 0, "7914P", NRD7914PBPT, NRD7914PTRK, 1152, 258048 }, { RD7958AID, 0, "7958A", NRD7958ABPT, NRD7958ATRK, 1013, 255276 }, { RD7957AID, 0, "7957A", NRD7957ABPT, NRD7957ATRK, 1036, 159544 }, { RD7933HID, 0, "7933H", NRD7933HBPT, NRD7933HTRK, 1321, 789958 }, { RD9134LID, 1, "9134L", NRD9134LBPT, NRD9134LTRK, 973, 77840 }, { RD7936HID, 0, "7936H", NRD7936HBPT, NRD7936HTRK, 698, 600978 }, { RD7937HID, 0, "7937H", NRD7937HBPT, NRD7937HTRK, 698, 1116102 }, { RD7914CTID, 0, "7914CT", NRD7914PBPT, NRD7914PTRK, 1152, 258048 }, { RD7946AID, 0, "7946A", NRD7945ABPT, NRD7945ATRK, 968, 108416 }, { RD9134LID, 1, "9122D", NRD9122SBPT, NRD9122STRK, 77, 1232 }, { RD7957BID, 0, "7957B", NRD7957BBPT, NRD7957BTRK, 1269, 159894 }, { RD7958BID, 0, "7958B", NRD7958BBPT, NRD7958BTRK, 786, 297108 }, { RD7959BID, 0, "7959B", NRD7959BBPT, NRD7959BTRK, 1572, 594216 }, { RD2200AID, 0, "2200A", NRD2200ABPT, NRD2200ATRK, 1449, 654948 }, { RD2203AID, 0, "2203A", NRD2203ABPT, NRD2203ATRK, 1449, 1309896 } }; int numrdidentinfo = sizeof(rdidentinfo) / sizeof(rdidentinfo[0]); int rdlookup(int, int, int); int rdgetinfo(struct rd_softc *); void rdrestart(void *); struct buf *rdfinish(struct rd_softc *, struct buf *); void rdgetcompatlabel(struct rd_softc *, struct disklabel *); void rdgetdefaultlabel(struct rd_softc *, struct disklabel *); void rdrestart(void *); void rdustart(struct rd_softc *); struct buf *rdfinish(struct rd_softc *, struct buf *); void rdcallback(void *, int); void rdstart(struct rd_softc *); void rdintr(struct rd_softc *); int rderror(struct rd_softc *); int rdmatch(device_t, cfdata_t, void *); void rdattach(device_t, device_t, void *); CFATTACH_DECL_NEW(rd, sizeof(struct rd_softc), rdmatch, rdattach, NULL, NULL); dev_type_open(rdopen); dev_type_close(rdclose); dev_type_read(rdread); dev_type_write(rdwrite); dev_type_ioctl(rdioctl); dev_type_strategy(rdstrategy); dev_type_dump(rddump); dev_type_size(rdsize); const struct bdevsw rd_bdevsw = { .d_open = rdopen, .d_close = rdclose, .d_strategy = rdstrategy, .d_ioctl = rdioctl, .d_dump = rddump, .d_psize = rdsize, .d_flag = D_DISK }; const struct cdevsw rd_cdevsw = { .d_open = rdopen, .d_close = rdclose, .d_read = rdread, .d_write = rdwrite, .d_ioctl = rdioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = nommap, .d_kqfilter = nokqfilter, .d_flag = D_DISK }; extern struct cfdriver rd_cd; int rdlookup(int id, int slave, int punit) { int i; for (i = 0; i < numrdidentinfo; i++) { if (rdidentinfo[i].ri_hwid == id) break; } if (i == numrdidentinfo || punit > rdidentinfo[i].ri_maxunum) return (-1); return (i); } int rdmatch(device_t parent, cfdata_t match, void *aux) { struct cs80bus_attach_args *ca = aux; if (rdlookup(ca->ca_id, ca->ca_slave, ca->ca_punit) < 0) return (0); return (1); } void rdattach(device_t parent, device_t self, void *aux) { struct rd_softc *sc = device_private(self); struct cs80bus_attach_args *ca = aux; struct cs80_description csd; char name[7]; int type, i, n; sc->sc_dev = self; sc->sc_ic = ca->ca_ic; sc->sc_slave = ca->ca_slave; sc->sc_punit = ca->ca_punit; if ((type = rdlookup(ca->ca_id, ca->ca_slave, ca->ca_punit)) < 0) return; if (cs80reset(parent, sc->sc_slave, sc->sc_punit)) { aprint_normal("\n"); aprint_error_dev(sc->sc_dev, "can't reset device\n"); return; } if (cs80describe(parent, sc->sc_slave, sc->sc_punit, &csd)) { aprint_normal("\n"); aprint_error_dev(sc->sc_dev, "didn't respond to describe command\n"); return; } memset(name, 0, sizeof(name)); for (i=0, n=0; i<3; i++) { name[n++] = (csd.d_name[i] >> 4) + '0'; name[n++] = (csd.d_name[i] & 0x0f) + '0'; } #ifdef DEBUG if (rddebug & RDB_IDENT) { printf("\n%s: name: ('%s')\n", device_xname(sc->sc_dev), name); printf(" iuw %x, maxxfr %d, ctype %d\n", csd.d_iuw, csd.d_cmaxxfr, csd.d_ctype); printf(" utype %d, bps %d, blkbuf %d, burst %d, blktime %d\n", csd.d_utype, csd.d_sectsize, csd.d_blkbuf, csd.d_burstsize, csd.d_blocktime); printf(" avxfr %d, ort %d, atp %d, maxint %d, fv %x, rv %x\n", csd.d_uavexfr, csd.d_retry, csd.d_access, csd.d_maxint, csd.d_fvbyte, csd.d_rvbyte); printf(" maxcyl/head/sect %d/%d/%d, maxvsect %d, inter %d\n", csd.d_maxcylhead >> 8, csd.d_maxcylhead & 0xff, csd.d_maxsect, csd.d_maxvsectl, csd.d_interleave); printf("%s", device_xname(sc->sc_dev)); } #endif /* * Take care of a couple of anomolies: * 1. 7945A and 7946A both return same HW id * 2. 9122S and 9134D both return same HW id * 3. 9122D and 9134L both return same HW id */ switch (ca->ca_id) { case RD7946AID: if (memcmp(name, "079450", 6) == 0) type = RD7945A; else type = RD7946A; break; case RD9134LID: if (memcmp(name, "091340", 6) == 0) type = RD9134L; else type = RD9122D; break; case RD9134DID: if (memcmp(name, "091220", 6) == 0) type = RD9122S; else type = RD9134D; break; } sc->sc_type = type; /* * XXX We use DEV_BSIZE instead of the sector size value pulled * XXX off the driver because all of this code assumes 512 byte * XXX blocks. ICK! */ printf(": %s\n", rdidentinfo[type].ri_desc); printf("%s: %d cylinders, %d heads, %d blocks, %d bytes/block\n", device_xname(sc->sc_dev), rdidentinfo[type].ri_ncyl, rdidentinfo[type].ri_ntpc, rdidentinfo[type].ri_nblocks, DEV_BSIZE); bufq_alloc(&sc->sc_tab, "fcfs", 0); /* * Initialize and attach the disk structure. */ memset(&sc->sc_dk, 0, sizeof(sc->sc_dk)); disk_init(&sc->sc_dk, device_xname(sc->sc_dev), NULL); disk_attach(&sc->sc_dk); callout_init(&sc->sc_restart_ch, 0); if (gpibregister(sc->sc_ic, sc->sc_slave, rdcallback, sc, &sc->sc_hdl)) { aprint_error_dev(sc->sc_dev, "can't register callback\n"); return; } sc->sc_flags = RDF_ALIVE; #ifdef DEBUG /* always report errors */ if (rddebug & RDB_ERROR) rderrthresh = 0; #endif /* * attach the device into the random source list */ rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), RND_TYPE_DISK, 0); } /* * Read or construct a disklabel */ int rdgetinfo(struct rd_softc *sc) { struct disklabel *lp = sc->sc_dk.dk_label; struct partition *pi; const char *msg; memset(sc->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); rdgetdefaultlabel(sc, lp); /* * Call the generic disklabel extraction routine */ msg = readdisklabel(RDMAKEDEV(0, device_unit(sc->sc_dev), RAW_PART), rdstrategy, lp, NULL); if (msg == NULL) return (0); pi = lp->d_partitions; printf("%s: WARNING: %s\n", device_xname(sc->sc_dev), msg); pi[RAW_PART].p_size = rdidentinfo[sc->sc_type].ri_nblocks; lp->d_npartitions = RAW_PART+1; pi[0].p_size = 0; return (0); } int rdopen(dev_t dev, int flags, int mode, struct lwp *l) { struct rd_softc *sc; int error, mask, part; sc = device_lookup_private(&rd_cd, RDUNIT(dev)); if (sc == NULL || (sc->sc_flags & RDF_ALIVE) ==0) return (ENXIO); /* * Wait for any pending opens/closes to complete */ while (sc->sc_flags & (RDF_OPENING | RDF_CLOSING)) (void) tsleep(sc, PRIBIO, "rdopen", 0); /* * On first open, get label and partition info. * We may block reading the label, so be careful * to stop any other opens. */ if (sc->sc_dk.dk_openmask == 0) { sc->sc_flags |= RDF_OPENING; error = rdgetinfo(sc); sc->sc_flags &= ~RDF_OPENING; wakeup((void *)sc); if (error) return (error); } part = RDPART(dev); mask = 1 << part; /* Check that the partition exists. */ if (part != RAW_PART && (part > sc->sc_dk.dk_label->d_npartitions || sc->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) return (ENXIO); /* Ensure only one open at a time. */ switch (mode) { case S_IFCHR: sc->sc_dk.dk_copenmask |= mask; break; case S_IFBLK: sc->sc_dk.dk_bopenmask |= mask; break; } sc->sc_dk.dk_openmask = sc->sc_dk.dk_copenmask | sc->sc_dk.dk_bopenmask; return (0); } int rdclose(dev_t dev, int flag, int mode, struct lwp *l) { struct rd_softc *sc; struct disk *dk; int mask, s; sc = device_lookup_private(&rd_cd, RDUNIT(dev)); if (sc == NULL) return (ENXIO); dk = &sc->sc_dk; mask = 1 << RDPART(dev); if (mode == S_IFCHR) dk->dk_copenmask &= ~mask; else dk->dk_bopenmask &= ~mask; dk->dk_openmask = dk->dk_copenmask | dk->dk_bopenmask; /* * On last close, we wait for all activity to cease since * the label/parition info will become invalid. Since we * might sleep, we must block any opens while we are here. * Note we don't have to about other closes since we know * we are the last one. */ if (dk->dk_openmask == 0) { sc->sc_flags |= RDF_CLOSING; s = splbio(); while (sc->sc_active) { sc->sc_flags |= RDF_WANTED; (void) tsleep(&sc->sc_tab, PRIBIO, "rdclose", 0); } splx(s); sc->sc_flags &= ~(RDF_CLOSING | RDF_WLABEL); wakeup((void *)sc); } return (0); } void rdstrategy(struct buf *bp) { struct rd_softc *sc; struct partition *pinfo; daddr_t bn; int sz, s; int offset; sc = device_lookup_private(&rd_cd, RDUNIT(bp->b_dev)); DPRINTF(RDB_FOLLOW, ("rdstrategy(%p): dev %" PRIx64 ", bn %" PRId64 ", bcount %d, %c\n", bp, bp->b_dev, bp->b_blkno, bp->b_bcount, (bp->b_flags & B_READ) ? 'R' : 'W')); bn = bp->b_blkno; sz = howmany(bp->b_bcount, DEV_BSIZE); pinfo = &sc->sc_dk.dk_label->d_partitions[RDPART(bp->b_dev)]; /* Don't perform partition translation on RAW_PART. */ offset = (RDPART(bp->b_dev) == RAW_PART) ? 0 : pinfo->p_offset; if (RDPART(bp->b_dev) != RAW_PART) { /* * XXX This block of code belongs in * XXX bounds_check_with_label() */ if (bn < 0 || bn + sz > pinfo->p_size) { sz = pinfo->p_size - bn; if (sz == 0) { bp->b_resid = bp->b_bcount; goto done; } if (sz < 0) { bp->b_error = EINVAL; goto done; } bp->b_bcount = dbtob(sz); } /* * Check for write to write protected label */ if (bn + offset <= LABELSECTOR && #if LABELSECTOR != 0 bn + offset + sz > LABELSECTOR && #endif !(bp->b_flags & B_READ) && !(sc->sc_flags & RDF_WLABEL)) { bp->b_error = EROFS; goto done; } } bp->b_rawblkno = bn + offset; s = splbio(); bufq_put(sc->sc_tab, bp); if (sc->sc_active == 0) { sc->sc_active = 1; rdustart(sc); } splx(s); return; done: biodone(bp); } /* * Called from timeout() when handling maintenance releases * callout from timeouts */ void rdrestart(void *arg) { int s = splbio(); rdustart((struct rd_softc *)arg); splx(s); } /* called by rdstrategy() to start a block transfer */ /* called by rdrestart() when handingly timeouts */ /* called by rdintr() */ void rdustart(struct rd_softc *sc) { struct buf *bp; bp = bufq_peek(sc->sc_tab); sc->sc_addr = bp->b_data; sc->sc_resid = bp->b_bcount; if (gpibrequest(sc->sc_ic, sc->sc_hdl)) rdstart(sc); } struct buf * rdfinish(struct rd_softc *sc, struct buf *bp) { sc->sc_errcnt = 0; (void)bufq_get(sc->sc_tab); bp->b_resid = 0; biodone(bp); gpibrelease(sc->sc_ic, sc->sc_hdl); if ((bp = bufq_peek(sc->sc_tab)) != NULL) return (bp); sc->sc_active = 0; if (sc->sc_flags & RDF_WANTED) { sc->sc_flags &= ~RDF_WANTED; wakeup((void *)&sc->sc_tab); } return (NULL); } void rdcallback(void *v, int action) { struct rd_softc *sc = v; DPRINTF(RDB_FOLLOW, ("rdcallback: v=%p, action=%d\n", v, action)); switch (action) { case GPIBCBF_START: rdstart(sc); break; case GPIBCBF_INTR: rdintr(sc); break; #ifdef DEBUG default: DPRINTF(RDB_ERROR, ("rdcallback: unknown action %d\n", action)); break; #endif } } /* called from rdustart() to start a transfer */ /* called from gpib interface as the initiator */ void rdstart(struct rd_softc *sc) { struct buf *bp = bufq_peek(sc->sc_tab); int slave, punit; slave = sc->sc_slave; punit = sc->sc_punit; DPRINTF(RDB_FOLLOW, ("rdstart(%s): bp %p, %c\n", device_xname(sc->sc_dev), bp, (bp->b_flags & B_READ) ? 'R' : 'W')); again: sc->sc_flags |= RDF_SEEK; sc->sc_ioc.c_unit = CS80CMD_SUNIT(punit); sc->sc_ioc.c_volume = CS80CMD_SVOL(0); sc->sc_ioc.c_saddr = CS80CMD_SADDR; sc->sc_ioc.c_hiaddr = htobe16(0); sc->sc_ioc.c_addr = htobe32(RDBTOS(bp->b_rawblkno)); sc->sc_ioc.c_nop2 = CS80CMD_NOP; sc->sc_ioc.c_slen = CS80CMD_SLEN; sc->sc_ioc.c_len = htobe32(sc->sc_resid); sc->sc_ioc.c_cmd = bp->b_flags & B_READ ? CS80CMD_READ : CS80CMD_WRITE; if (gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &sc->sc_ioc.c_unit, sizeof(sc->sc_ioc)-1) == sizeof(sc->sc_ioc)-1) { /* Instrumentation. */ disk_busy(&sc->sc_dk); iostat_seek(sc->sc_dk.dk_stats); gpibawait(sc->sc_ic); return; } /* * Experience has shown that the gpibwait in this gpibsend will * occasionally timeout. It appears to occur mostly on old 7914 * drives with full maintenance tracks. We should probably * integrate this with the backoff code in rderror. */ DPRINTF(RDB_ERROR, ("rdstart: cmd %x adr %ul blk %" PRId64 " len %d ecnt %d\n", sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, bp->b_blkno, sc->sc_resid, sc->sc_errcnt)); sc->sc_flags &= ~RDF_SEEK; cs80reset(device_parent(sc->sc_dev), slave, punit); if (sc->sc_errcnt++ < RDRETRY) goto again; printf("%s: rdstart err: cmd 0x%x sect %uld blk %" PRId64 " len %d\n", device_xname(sc->sc_dev), sc->sc_ioc.c_cmd, sc->sc_ioc.c_addr, bp->b_blkno, sc->sc_resid); bp->b_error = EIO; bp = rdfinish(sc, bp); if (bp) { sc->sc_addr = bp->b_data; sc->sc_resid = bp->b_bcount; if (gpibrequest(sc->sc_ic, sc->sc_hdl)) goto again; } } void rdintr(struct rd_softc *sc) { struct buf *bp; u_int8_t stat = 13; /* in case gpibrecv fails */ int rv, dir, restart, slave; slave = sc->sc_slave; bp = bufq_peek(sc->sc_tab); DPRINTF(RDB_FOLLOW, ("rdintr(%s): bp %p, %c, flags %x\n", device_xname(sc->sc_dev), bp, (bp->b_flags & B_READ) ? 'R' : 'W', sc->sc_flags)); disk_unbusy(&sc->sc_dk, (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); if (sc->sc_flags & RDF_SEEK) { sc->sc_flags &= ~RDF_SEEK; dir = (bp->b_flags & B_READ ? GPIB_READ : GPIB_WRITE); gpibxfer(sc->sc_ic, slave, CS80CMD_EXEC, sc->sc_addr, sc->sc_resid, dir, dir == GPIB_READ); disk_busy(&sc->sc_dk); return; } if ((sc->sc_flags & RDF_SWAIT) == 0) { if (gpibpptest(sc->sc_ic, slave) == 0) { /* Instrumentation. */ disk_busy(&sc->sc_dk); sc->sc_flags |= RDF_SWAIT; gpibawait(sc->sc_ic); return; } } else sc->sc_flags &= ~RDF_SWAIT; rv = gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); if (rv != 1 || stat) { DPRINTF(RDB_ERROR, ("rdintr: receive failed (rv=%d) or bad stat %d\n", rv, stat)); restart = rderror(sc); if (sc->sc_errcnt++ < RDRETRY) { if (restart) rdstart(sc); return; } bp->b_error = EIO; } if (rdfinish(sc, bp) != NULL) rdustart(sc); rnd_add_uint32(&sc->rnd_source, bp->b_blkno); } /* * Deal with errors. * Returns 1 if request should be restarted, * 0 if we should just quietly give up. */ int rderror(struct rd_softc *sc) { struct cs80_stat css; struct buf *bp; daddr_t hwbn, pbn; DPRINTF(RDB_FOLLOW, ("rderror: sc=%p\n", sc)); if (cs80status(device_parent(sc->sc_dev), sc->sc_slave, sc->sc_punit, &css)) { cs80reset(device_parent(sc->sc_dev), sc->sc_slave, sc->sc_punit); return (1); } #ifdef DEBUG if (rddebug & RDB_ERROR) { /* status info */ printf("\n volume: %d, unit: %d\n", (css.c_vu>>4)&0xF, css.c_vu&0xF); printf(" reject 0x%x\n", css.c_ref); printf(" fault 0x%x\n", css.c_fef); printf(" access 0x%x\n", css.c_aef); printf(" info 0x%x\n", css.c_ief); printf(" block, P1-P10: "); printf("0x%x", *(u_int32_t *)&css.c_raw[0]); printf("0x%x", *(u_int32_t *)&css.c_raw[4]); printf("0x%x\n", *(u_int16_t *)&css.c_raw[8]); } #endif if (css.c_fef & FEF_REXMT) return (1); if (css.c_fef & FEF_PF) { cs80reset(device_parent(sc->sc_dev), sc->sc_slave, sc->sc_punit); return (1); } /* * Unit requests release for internal maintenance. * We just delay awhile and try again later. Use expontially * increasing backoff ala ethernet drivers since we don't really * know how long the maintenance will take. With RDWAITC and * RDRETRY as defined, the range is 1 to 32 seconds. */ if (css.c_fef & FEF_IMR) { extern int hz; int rdtimo = RDWAITC << sc->sc_errcnt; DPRINTF(RDB_STATUS, ("%s: internal maintenance, %d-second timeout\n", device_xname(sc->sc_dev), rdtimo)); gpibrelease(sc->sc_ic, sc->sc_hdl); callout_reset(&sc->sc_restart_ch, rdtimo * hz, rdrestart, sc); return (0); } /* * Only report error if we have reached the error reporting * threshhold. By default, this will only report after the * retry limit has been exceeded. */ if (sc->sc_errcnt < rderrthresh) return (1); /* * First conjure up the block number at which the error occurred. */ bp = bufq_peek(sc->sc_tab); pbn = sc->sc_dk.dk_label->d_partitions[RDPART(bp->b_dev)].p_offset; if ((css.c_fef & FEF_CU) || (css.c_fef & FEF_DR) || (css.c_ief & IEF_RRMASK)) { /* * Not all errors report a block number, just use b_blkno. */ hwbn = RDBTOS(pbn + bp->b_blkno); pbn = bp->b_blkno; } else { hwbn = css.c_blk; pbn = RDSTOB(hwbn) - pbn; } #ifdef DEBUG if (rddebug & RDB_ERROR) { /* status info */ printf("\n volume: %d, unit: %d\n", (css.c_vu>>4)&0xF, css.c_vu&0xF); printf(" reject 0x%x\n", css.c_ref); printf(" fault 0x%x\n", css.c_fef); printf(" access 0x%x\n", css.c_aef); printf(" info 0x%x\n", css.c_ief); printf(" block, P1-P10: "); printf(" block: %" PRId64 ", P1-P10: ", hwbn); printf("0x%x", *(u_int32_t *)&css.c_raw[0]); printf("0x%x", *(u_int32_t *)&css.c_raw[4]); printf("0x%x\n", *(u_int16_t *)&css.c_raw[8]); } #endif #ifdef DEBUG if (rddebug & RDB_ERROR) { /* command */ printf(" ioc: "); printf("0x%x", *(u_int32_t *)&sc->sc_ioc.c_pad); printf("0x%x", *(u_int16_t *)&sc->sc_ioc.c_hiaddr); printf("0x%x", *(u_int32_t *)&sc->sc_ioc.c_addr); printf("0x%x", *(u_int16_t *)&sc->sc_ioc.c_nop2); printf("0x%x", *(u_int32_t *)&sc->sc_ioc.c_len); printf("0x%x\n", *(u_int16_t *)&sc->sc_ioc.c_cmd); return (1); } #endif /* * Now output a generic message suitable for badsect. * Note that we don't use harderr because it just prints * out b_blkno which is just the beginning block number * of the transfer, not necessary where the error occurred. */ printf("%s%c: hard error, sector number %" PRId64 "\n", device_xname(sc->sc_dev), 'a'+RDPART(bp->b_dev), pbn); /* * Now report the status as returned by the hardware with * attempt at interpretation. */ printf("%s %s error:", device_xname(sc->sc_dev), (bp->b_flags & B_READ) ? "read" : "write"); printf(" unit %d, volume %d R0x%x F0x%x A0x%x I0x%x\n", css.c_vu&0xF, (css.c_vu>>4)&0xF, css.c_ref, css.c_fef, css.c_aef, css.c_ief); printf("P1-P10: "); printf("0x%x ", *(u_int32_t *)&css.c_raw[0]); printf("0x%x ", *(u_int32_t *)&css.c_raw[4]); printf("0x%x\n", *(u_int16_t *)&css.c_raw[8]); return (1); } int rdread(dev_t dev, struct uio *uio, int flags) { return (physio(rdstrategy, NULL, dev, B_READ, minphys, uio)); } int rdwrite(dev_t dev, struct uio *uio, int flags) { return (physio(rdstrategy, NULL, dev, B_WRITE, minphys, uio)); } int rdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) { struct rd_softc *sc; struct disklabel *lp; int error, flags; sc = device_lookup_private(&rd_cd, RDUNIT(dev)); if (sc == NULL) return (ENXIO); lp = sc->sc_dk.dk_label; DPRINTF(RDB_FOLLOW, ("rdioctl: sc=%p\n", sc)); switch (cmd) { case DIOCGDINFO: *(struct disklabel *)data = *lp; return (0); case DIOCGPART: ((struct partinfo *)data)->disklab = lp; ((struct partinfo *)data)->part = &lp->d_partitions[RDPART(dev)]; return (0); case DIOCWLABEL: if ((flag & FWRITE) == 0) return (EBADF); if (*(int *)data) sc->sc_flags |= RDF_WLABEL; else sc->sc_flags &= ~RDF_WLABEL; return (0); case DIOCSDINFO: if ((flag & FWRITE) == 0) return (EBADF); return (setdisklabel(lp, (struct disklabel *)data, (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dk.dk_openmask, (struct cpu_disklabel *)0)); case DIOCWDINFO: if ((flag & FWRITE) == 0) return (EBADF); error = setdisklabel(lp, (struct disklabel *)data, (sc->sc_flags & RDF_WLABEL) ? 0 : sc->sc_dk.dk_openmask, (struct cpu_disklabel *)0); if (error) return (error); flags = sc->sc_flags; sc->sc_flags = RDF_ALIVE | RDF_WLABEL; error = writedisklabel(RDLABELDEV(dev), rdstrategy, lp, (struct cpu_disklabel *)0); sc->sc_flags = flags; return (error); case DIOCGDEFLABEL: rdgetdefaultlabel(sc, (struct disklabel *)data); return (0); } return (EINVAL); } void rdgetdefaultlabel(struct rd_softc *sc, struct disklabel *lp) { int type = sc->sc_type; memset((void *)lp, 0, sizeof(struct disklabel)); lp->d_type = DTYPE_HPIB /* DTYPE_GPIB */; lp->d_secsize = DEV_BSIZE; lp->d_nsectors = rdidentinfo[type].ri_nbpt; lp->d_ntracks = rdidentinfo[type].ri_ntpc; lp->d_ncylinders = rdidentinfo[type].ri_ncyl; lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; lp->d_secperunit = lp->d_ncylinders * lp->d_secpercyl; strncpy(lp->d_typename, rdidentinfo[type].ri_desc, 16); strncpy(lp->d_packname, "fictitious", 16); lp->d_rpm = 3000; lp->d_interleave = 1; lp->d_flags = 0; lp->d_partitions[RAW_PART].p_offset = 0; lp->d_partitions[RAW_PART].p_size = lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; lp->d_npartitions = RAW_PART + 1; lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); } int rdsize(dev_t dev) { struct rd_softc *sc; int psize, didopen = 0; sc = device_lookup_private(&rd_cd, RDUNIT(dev)); if (sc == NULL || (sc->sc_flags & RDF_ALIVE) == 0) return (-1); /* * We get called very early on (via swapconf) * without the device being open so we may need * to handle it here. */ if (sc->sc_dk.dk_openmask == 0) { if (rdopen(dev, FREAD | FWRITE, S_IFBLK, NULL)) return (-1); didopen = 1; } psize = sc->sc_dk.dk_label->d_partitions[RDPART(dev)].p_size * (sc->sc_dk.dk_label->d_secsize / DEV_BSIZE); if (didopen) (void) rdclose(dev, FREAD | FWRITE, S_IFBLK, NULL); return (psize); } static int rddoingadump; /* simple mutex */ /* * Non-interrupt driven, non-dma dump routine. */ int rddump(dev_t dev, daddr_t blkno, void *va, size_t size) { struct rd_softc *sc; int sectorsize; /* size of a disk sector */ int nsects; /* number of sectors in partition */ int sectoff; /* sector offset of partition */ int totwrt; /* total number of sectors left to write */ int nwrt; /* current number of sectors to write */ int slave; struct disklabel *lp; u_int8_t stat; /* Check for recursive dump; if so, punt. */ if (rddoingadump) return (EFAULT); rddoingadump = 1; sc = device_lookup_private(&rd_cd, RDUNIT(dev)); if (sc == NULL || (sc->sc_flags & RDF_ALIVE) == 0) return (ENXIO); DPRINTF(RDB_FOLLOW, ("rddump: sc=%p\n", sc)); slave = sc->sc_slave; /* * Convert to disk sectors. Request must be a multiple of size. */ lp = sc->sc_dk.dk_label; sectorsize = lp->d_secsize; if ((size % sectorsize) != 0) return (EFAULT); totwrt = size / sectorsize; blkno = dbtob(blkno) / sectorsize; /* blkno in DEV_BSIZE units */ nsects = lp->d_partitions[RDPART(dev)].p_size; sectoff = lp->d_partitions[RDPART(dev)].p_offset; /* Check transfer bounds against partition size. */ if ((blkno < 0) || (blkno + totwrt) > nsects) return (EINVAL); /* Offset block number to start of partition. */ blkno += sectoff; while (totwrt > 0) { nwrt = totwrt; /* XXX */ #ifndef RD_DUMP_NOT_TRUSTED /* * Fill out and send GPIB command. */ sc->sc_ioc.c_unit = CS80CMD_SUNIT(sc->sc_punit); sc->sc_ioc.c_volume = CS80CMD_SVOL(0); sc->sc_ioc.c_saddr = CS80CMD_SADDR; sc->sc_ioc.c_hiaddr = 0; sc->sc_ioc.c_addr = RDBTOS(blkno); sc->sc_ioc.c_nop2 = CS80CMD_NOP; sc->sc_ioc.c_slen = CS80CMD_SLEN; sc->sc_ioc.c_len = nwrt * sectorsize; sc->sc_ioc.c_cmd = CS80CMD_WRITE; (void) gpibsend(sc->sc_ic, slave, CS80CMD_SCMD, &sc->sc_ioc.c_unit, sizeof(sc->sc_ioc)-3); if (gpibswait(sc->sc_ic, slave)) return (EIO); /* * Send the data. */ (void) gpibsend(sc->sc_ic, slave, CS80CMD_EXEC, va, nwrt * sectorsize); (void) gpibswait(sc->sc_ic, slave); (void) gpibrecv(sc->sc_ic, slave, CS80CMD_QSTAT, &stat, 1); if (stat) return (EIO); #else /* RD_DUMP_NOT_TRUSTED */ /* Let's just talk about this first... */ printf("%s: dump addr %p, blk %d\n", device_xname(sc->sc_dev), va, blkno); delay(500 * 1000); /* half a second */ #endif /* RD_DUMP_NOT_TRUSTED */ /* update block count */ totwrt -= nwrt; blkno += nwrt; va = (char *)va + sectorsize * nwrt; } rddoingadump = 0; return (0); }