/* $NetBSD: ld_twe.c,v 1.40 2017/02/27 21:32:33 jdolecek Exp $ */ /*- * Copyright (c) 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran; and by Jason R. Thorpe of Wasabi Systems, Inc. * * 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. */ /* * 3ware "Escalade" RAID controller front-end for ld(4) driver. */ #include __KERNEL_RCSID(0, "$NetBSD: ld_twe.c,v 1.40 2017/02/27 21:32:33 jdolecek Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioconf.h" struct ld_twe_softc { struct ld_softc sc_ld; int sc_hwunit; }; static void ld_twe_attach(device_t, device_t, void *); static int ld_twe_detach(device_t, int); static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, struct buf *); static int ld_twe_dump(struct ld_softc *, void *, int, int); static int ld_twe_flush(struct ld_softc *, bool); static int ld_twe_ioctl(struct ld_softc *, u_long, void *, int32_t, bool); static void ld_twe_handler(struct twe_ccb *, int); static int ld_twe_match(device_t, cfdata_t, void *); static int ld_twe_start(struct ld_softc *, struct buf *); static void ld_twe_adjqparam(device_t, int); CFATTACH_DECL_NEW(ld_twe, sizeof(struct ld_twe_softc), ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); static const struct twe_callbacks ld_twe_callbacks = { ld_twe_adjqparam, }; static int ld_twe_match(device_t parent, cfdata_t match, void *aux) { return (1); } static void ld_twe_attach(device_t parent, device_t self, void *aux) { struct twe_attach_args *twea = aux; struct ld_twe_softc *sc = device_private(self); struct ld_softc *ld = &sc->sc_ld; struct twe_softc *twe = device_private(parent); struct twe_drive *td = &twe->sc_units[twea->twea_unit]; const char *typestr, *stripestr, *statstr; char unktype[16], stripebuf[32], unkstat[32]; int error; uint8_t status; ld->sc_dv = self; twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); sc->sc_hwunit = twea->twea_unit; ld->sc_flags = LDF_ENABLED; ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); ld->sc_secperunit = td->td_size; ld->sc_secsize = TWE_SECTOR_SIZE; ld->sc_maxqueuecnt = twe->sc_openings; ld->sc_start = ld_twe_start; ld->sc_dump = ld_twe_dump; ld->sc_ioctl = ld_twe_ioctl; typestr = twe_describe_code(twe_table_unittype, td->td_type); if (typestr == NULL) { snprintf(unktype, sizeof(unktype), "<0x%02x>", td->td_type); typestr = unktype; } switch (td->td_type) { case TWE_AD_CONFIG_RAID0: case TWE_AD_CONFIG_RAID5: case TWE_AD_CONFIG_RAID10: stripestr = twe_describe_code(twe_table_stripedepth, td->td_stripe); if (stripestr == NULL) snprintf(stripebuf, sizeof(stripebuf), " ", td->td_stripe); else snprintf(stripebuf, sizeof(stripebuf), "%s stripe ", stripestr); break; default: stripebuf[0] = '\0'; } error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, TWE_PARAM_UNITINFO_Status, &status); status &= TWE_PARAM_UNITSTATUS_MASK; if (error) { snprintf(unkstat, sizeof(unkstat), ""); statstr = unkstat; } else if ((statstr = twe_describe_code(twe_table_unitstate, status)) == NULL) { snprintf(unkstat, sizeof(unkstat), "", status); statstr = unkstat; } aprint_normal(": %s%s, status: %s\n", stripebuf, typestr, statstr); ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); } static int ld_twe_detach(device_t self, int flags) { struct ld_twe_softc *sc = device_private(self); struct ld_softc *ld = &sc->sc_ld; int rv; if ((rv = ldbegindetach(ld, flags)) != 0) return (rv); ldenddetach(ld); return (0); } static int ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, int dowrite, struct buf *bp) { struct twe_ccb *ccb; struct twe_cmd *tc; struct twe_softc *twe; int s, rv, flags; twe = device_private(device_parent(sc->sc_ld.sc_dv)); flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) return (EAGAIN); ccb->ccb_data = data; ccb->ccb_datasize = datasize; tc = ccb->ccb_cmd; /* Build the command. */ tc->tc_size = 3; tc->tc_unit = sc->sc_hwunit; 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 (bp == NULL) { /* * Polled commands must not sit on the software queue. Wait * up to 2 seconds for the command to complete. */ s = splbio(); rv = twe_ccb_poll(twe, ccb, 2000); twe_ccb_unmap(twe, ccb); twe_ccb_free(twe, ccb); splx(s); } else { ccb->ccb_tx.tx_handler = ld_twe_handler; ccb->ccb_tx.tx_context = bp; ccb->ccb_tx.tx_dv = sc->sc_ld.sc_dv; twe_ccb_enqueue(twe, ccb); rv = 0; } return (rv); } static int ld_twe_start(struct ld_softc *ld, struct buf *bp) { return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); } 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 = device_private(tx->tx_dv); twe = device_private(device_parent(sc->sc_ld.sc_dv)); twe_ccb_unmap(twe, ccb); twe_ccb_free(twe, ccb); if (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) { return (ld_twe_dobio((struct ld_twe_softc *)ld, data, blkcnt * ld->sc_secsize, blkno, 1, NULL)); } static int ld_twe_flush(struct ld_softc *ld, bool poll) { struct ld_twe_softc *sc = (void *) ld; struct twe_softc *twe = device_private(device_parent(ld->sc_dv)); struct twe_ccb *ccb; struct twe_cmd *tc; int s, rv; ccb = twe_ccb_alloc_wait(twe, 0); KASSERT(ccb != NULL); ccb->ccb_data = NULL; ccb->ccb_datasize = 0; tc = ccb->ccb_cmd; tc->tc_size = 2; tc->tc_opcode = TWE_OP_FLUSH; tc->tc_unit = sc->sc_hwunit; tc->tc_count = 0; if (poll) { /* * Polled commands must not sit on the software queue. Wait * up to 2 seconds for the command to complete. */ s = splbio(); rv = twe_ccb_poll(twe, ccb, 2000); twe_ccb_unmap(twe, ccb); twe_ccb_free(twe, ccb); splx(s); } else { ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; ccb->ccb_tx.tx_context = NULL; ccb->ccb_tx.tx_dv = ld->sc_dv; twe_ccb_enqueue(twe, ccb); rv = 0; s = splbio(); while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) if ((rv = tsleep(ccb, PRIBIO, "tweflush", 60 * hz)) != 0) break; twe_ccb_free(twe, ccb); splx(s); } return (rv); } static int ld_twe_ioctl(struct ld_softc *ld, u_long cmd, void *addr, int32_t flag, bool poll) { int error; switch (cmd) { case DIOCCACHESYNC: error = ld_twe_flush(ld, poll); break; default: error = EPASSTHROUGH; break; } return error; } static void ld_twe_adjqparam(device_t self, int openings) { struct ld_twe_softc *sc = device_private(self); struct ld_softc *ld = &sc->sc_ld; ldadjqparam(ld, openings); } MODULE(MODULE_CLASS_DRIVER, ld_twe, "ld,twe"); #ifdef _MODULE /* * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" * XXX it will be defined in the common-code module */ #undef CFDRIVER_DECL #define CFDRIVER_DECL(name, class, attr) #include "ioconf.c" #endif static int ld_twe_modcmd(modcmd_t cmd, void *opaque) { #ifdef _MODULE /* * We ignore the cfdriver_vec[] that ioconf provides, since * the cfdrivers are attached already. */ static struct cfdriver * const no_cfdriver_vec[] = { NULL }; #endif int error = 0; #ifdef _MODULE switch (cmd) { case MODULE_CMD_INIT: error = config_init_component(no_cfdriver_vec, cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); break; case MODULE_CMD_FINI: error = config_fini_component(no_cfdriver_vec, cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); break; default: error = ENOTTY; break; } #endif return error; }