/* $NetBSD: ld_twe.c,v 1.1 2000/11/26 17:44:06 ad Exp $ */ /*- * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * 3ware "Escalade" RAID controller front-end for ld(4) driver. */ #include "rnd.h" #include "opt_twe.h" #include #include #include #include #include #include #include #include #if NRND > 0 #include #endif #include #include #include #include #include struct ld_twe_softc { struct ld_softc sc_ld; int sc_hwunit; }; static void ld_twe_attach(struct device *, struct device *, void *); static int ld_twe_dobio(struct ld_twe_softc *, int, void *, int, int, int, struct twe_context *); static int ld_twe_dump(struct ld_softc *, void *, int, int); static void ld_twe_handler(struct twe_ccb *, int); static int ld_twe_match(struct device *, struct cfdata *, void *); static int ld_twe_start(struct ld_softc *, struct buf *); struct cfattach ld_twe_ca = { sizeof(struct ld_twe_softc), ld_twe_match, ld_twe_attach }; static int ld_twe_match(struct device *parent, struct cfdata *match, void *aux) { return (1); } static void ld_twe_attach(struct device *parent, struct device *self, void *aux) { struct twe_attach_args *twea; struct ld_twe_softc *sc; struct ld_softc *ld; struct twe_softc *twe; sc = (struct ld_twe_softc *)self; ld = &sc->sc_ld; twe = (struct twe_softc *)parent; twea = aux; sc->sc_hwunit = twea->twea_unit; ld->sc_flags = LDF_ENABLED; ld->sc_maxxfer = TWE_MAX_XFER; ld->sc_secperunit = twe->sc_dsize[twea->twea_unit]; ld->sc_secsize = TWE_SECTOR_SIZE; ld->sc_maxqueuecnt = min((twe->sc_nccbs - 1) / twe->sc_nunits, TWE_MAX_PU_QUEUECNT); ld->sc_start = ld_twe_start; ld->sc_dump = ld_twe_dump; /* Build synthetic geometry as per controller internal rules. */ if (ld->sc_secperunit > 0x200000) { ld->sc_nheads = 255; ld->sc_nsectors = 63; } else { ld->sc_nheads = 64; ld->sc_nsectors = 32; } ld->sc_ncylinders = ld->sc_secperunit / (ld->sc_nheads * ld->sc_nsectors); printf("\n"); ldattach(ld); } static int ld_twe_dobio(struct ld_twe_softc *sc, int unit, void *data, int datasize, int blkno, int dowrite, struct twe_context *tx) { struct twe_ccb *ccb; struct twe_cmd *tc; struct twe_softc *twe; int s, rv, flags; twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); if ((rv = twe_ccb_alloc(twe, &ccb, flags)) != 0) return (rv); ccb->ccb_data = data; ccb->ccb_datasize = datasize; tc = ccb->ccb_cmd; /* Build the command. */ tc->tc_size = 3; tc->tc_unit = unit; tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); tc->tc_args.io.lba = htole32(blkno); if (dowrite) tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); else tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); /* Map the data transfer. */ if ((rv = twe_ccb_map(twe, ccb)) != 0) { twe_ccb_free(twe, ccb); return (rv); } if (tx == NULL) { /* * Polled commands must not sit on the software queue. Wait * up to 2 seconds for the command to complete. */ s = splbio(); if ((rv = twe_ccb_submit(twe, ccb)) == 0) rv = twe_ccb_poll(twe, ccb, 2000); twe_ccb_unmap(twe, ccb); twe_ccb_free(twe, ccb); splx(s); } else { memcpy(&ccb->ccb_tx, tx, sizeof(struct twe_context)); twe_ccb_enqueue(twe, ccb); rv = 0; } return (rv); } static int ld_twe_start(struct ld_softc *ld, struct buf *bp) { struct twe_context tx; struct ld_twe_softc *sc; struct twe_softc *twe; sc = (struct ld_twe_softc *)ld; twe = (struct twe_softc *)ld->sc_dv.dv_parent; tx.tx_handler = ld_twe_handler; tx.tx_context = bp; tx.tx_dv = &ld->sc_dv; return (ld_twe_dobio(sc, sc->sc_hwunit, bp->b_data, bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, &tx)); } static void ld_twe_handler(struct twe_ccb *ccb, int error) { struct buf *bp; struct twe_context *tx; struct ld_twe_softc *sc; struct twe_softc *twe; tx = &ccb->ccb_tx; bp = tx->tx_context; sc = (struct ld_twe_softc *)tx->tx_dv; twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; twe_ccb_unmap(twe, ccb); twe_ccb_free(twe, ccb); if (error) { bp->b_flags |= B_ERROR; bp->b_error = error; bp->b_resid = bp->b_bcount; } else bp->b_resid = 0; lddone(&sc->sc_ld, bp); } static int ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) { struct ld_twe_softc *sc; sc = (struct ld_twe_softc *)ld; return (ld_twe_dobio(sc, sc->sc_hwunit, data, blkcnt * ld->sc_secsize, blkno, 1, NULL)); }