/* $NetBSD: ld_cac.c,v 1.30.8.1 2017/09/01 09:59:11 martin Exp $ */ /*- * Copyright (c) 2000, 2006 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. * * 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. */ /* * Compaq array controller front-end for ld(4) driver. */ #include __KERNEL_RCSID(0, "$NetBSD: ld_cac.c,v 1.30.8.1 2017/09/01 09:59:11 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioconf.h" struct ld_cac_softc { struct ld_softc sc_ld; kmutex_t *sc_mutex; int sc_hwunit; int sc_serrcnt; struct timeval sc_serrtm; }; void ld_cac_attach(device_t, device_t, void *); void ld_cac_done(device_t, void *, int); int ld_cac_dump(struct ld_softc *, void *, int, int); int ld_cac_match(device_t, cfdata_t, void *); int ld_cac_start(struct ld_softc *, struct buf *); static const struct timeval ld_cac_serrintvl = { 60, 0 }; CFATTACH_DECL_NEW(ld_cac, sizeof(struct ld_cac_softc), ld_cac_match, ld_cac_attach, NULL, NULL); int ld_cac_match(device_t parent, cfdata_t match, void *aux) { return (1); } void ld_cac_attach(device_t parent, device_t self, void *aux) { struct cac_drive_info dinfo; struct cac_attach_args *caca; struct ld_cac_softc *sc = device_private(self); struct cac_softc *cac = device_private(parent); struct ld_softc *ld = &sc->sc_ld; const char *type; caca = aux; ld->sc_dv = self; sc->sc_mutex = &cac->sc_mutex; sc->sc_hwunit = caca->caca_unit; if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo), sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) { aprint_error(": CMD_GET_LOG_DRV_INFO failed\n"); return; } ld->sc_secsize = CAC_GET2(dinfo.secsize); ld->sc_maxxfer = CAC_MAX_XFER; ld->sc_maxqueuecnt = (CAC_MAX_CCBS - 1) / cac->sc_nunits; ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) * CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors); ld->sc_start = ld_cac_start; ld->sc_dump = ld_cac_dump; switch (CAC_GET1(dinfo.mirror)) { case 0: type = "standalone disk or RAID0"; break; case 1: type = "RAID4"; break; case 2: type = "RAID1"; break; case 3: type = "RAID5"; break; default: type = "unknown type of"; break; } aprint_normal(": %s array\n", type); /* XXX We should verify this... */ ld->sc_flags = LDF_ENABLED | LDF_MPSAFE; ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); } int ld_cac_start(struct ld_softc *ld, struct buf *bp) { int flags, cmd; struct cac_softc *cac; struct ld_cac_softc *sc; struct cac_context cc; sc = (struct ld_cac_softc *)ld; cac = device_private(device_parent(ld->sc_dv)); cc.cc_handler = ld_cac_done; cc.cc_context = bp; cc.cc_dv = ld->sc_dv; if ((bp->b_flags & B_READ) == 0) { cmd = CAC_CMD_WRITE; flags = CAC_CCB_DATA_OUT; } else { cmd = CAC_CMD_READ; flags = CAC_CCB_DATA_IN; } return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit, bp->b_rawblkno, flags, &cc)); } int ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) { struct ld_cac_softc *sc; sc = (struct ld_cac_softc *)ld; return (cac_cmd(device_private(device_parent(ld->sc_dv)), CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize, sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL)); } void ld_cac_done(device_t dv, void *context, int error) { struct buf *bp; struct ld_cac_softc *sc; int rv; bp = context; rv = 0; sc = device_private(dv); if ((error & CAC_RET_CMD_REJECTED) == CAC_RET_CMD_REJECTED) { aprint_error_dev(dv, "command rejected\n"); rv = EIO; } if (rv == 0 && (error & CAC_RET_INVAL_BLOCK) != 0) { aprint_error_dev(dv, "invalid request block\n"); rv = EIO; } if (rv == 0 && (error & CAC_RET_HARD_ERROR) != 0) { aprint_error_dev(dv, "hard error\n"); rv = EIO; } if (rv == 0 && (error & CAC_RET_SOFT_ERROR) != 0) { sc->sc_serrcnt++; if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) { sc->sc_serrcnt = 0; aprint_error_dev(dv, "%d soft errors; array may be degraded\n", sc->sc_serrcnt); } } if (rv) { bp->b_error = rv; bp->b_resid = bp->b_bcount; } else bp->b_resid = 0; mutex_exit(sc->sc_mutex); lddone(&sc->sc_ld, bp); mutex_enter(sc->sc_mutex); } MODULE(MODULE_CLASS_DRIVER, ld_cac, "ld,cac"); #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_cac_modcmd(modcmd_t cmd, void *opaque) { int error = 0; #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 #ifdef _MODULE switch (cmd) { case MODULE_CMD_INIT: error = config_init_component(no_cfdriver_vec, cfattach_ioconf_ld_cac, cfdata_ioconf_ld_cac); break; case MODULE_CMD_FINI: error = config_fini_component(no_cfdriver_vec, cfattach_ioconf_ld_cac, cfdata_ioconf_ld_cac); break; default: error = ENOTTY; break; } #endif return error; }