/* $NetBSD: ld_amr.c,v 1.25 2016/09/27 03:33:32 pgoyette Exp $ */ /*- * Copyright (c) 2002, 2003 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. */ /* * AMI RAID controller front-end for ld(4) driver. */ #include __KERNEL_RCSID(0, "$NetBSD: ld_amr.c,v 1.25 2016/09/27 03:33:32 pgoyette Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioconf.h" struct ld_amr_softc { struct ld_softc sc_ld; int sc_hwunit; }; static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, struct buf *); static int ld_amr_dump(struct ld_softc *, void *, int, int); static void ld_amr_handler(struct amr_ccb *); static int ld_amr_start(struct ld_softc *, struct buf *); static int ld_amr_match(device_t parent, cfdata_t match, void *aux) { return (1); } static void ld_amr_attach(device_t parent, device_t self, void *aux) { struct amr_attach_args *amra = aux; struct ld_amr_softc *sc = device_private(self); struct ld_softc *ld = &sc->sc_ld; struct amr_softc *amr = device_private(parent); const char *statestr; int happy; ld->sc_dv = self; sc->sc_hwunit = amra->amra_unit; ld->sc_maxxfer = amr_max_xfer; ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) / amr->amr_numdrives; ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; ld->sc_secsize = AMR_SECTOR_SIZE; ld->sc_start = ld_amr_start; ld->sc_dump = ld_amr_dump; if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; /* * Print status information and attach to the ld driver proper. */ statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, &happy); if (happy) ld->sc_flags = LDF_ENABLED; aprint_normal(": RAID %d, %s\n", amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, statestr); ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); } CFATTACH_DECL_NEW(ld_amr, sizeof(struct ld_amr_softc), ld_amr_match, ld_amr_attach, NULL, NULL); static int ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, int blkno, int dowrite, struct buf *bp) { struct amr_ccb *ac; struct amr_softc *amr; struct amr_mailbox_cmd *mb; int rv; amr = device_private(device_parent(sc->sc_ld.sc_dv)); if ((rv = amr_ccb_alloc(amr, &ac)) != 0) return (rv); mb = &ac->ac_cmd; mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); mb->mb_drive = sc->sc_hwunit; mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); mb->mb_lba = htole32(blkno); rv = amr_ccb_map(amr, ac, data, datasize, (dowrite ? AC_XFER_OUT : AC_XFER_IN)); if (rv != 0) { amr_ccb_free(amr, ac); return (rv); } if (bp == NULL) { /* * Polled commands must not sit on the software queue. Wait * up to 30 seconds for the command to complete. */ rv = amr_ccb_poll(amr, ac, 30000); amr_ccb_unmap(amr, ac); amr_ccb_free(amr, ac); } else { ac->ac_handler = ld_amr_handler; ac->ac_context = bp; ac->ac_dv = sc->sc_ld.sc_dv; amr_ccb_enqueue(amr, ac); rv = 0; } return (rv); } static int ld_amr_start(struct ld_softc *ld, struct buf *bp) { return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); } static void ld_amr_handler(struct amr_ccb *ac) { struct buf *bp; struct ld_amr_softc *sc; struct amr_softc *amr; bp = ac->ac_context; sc = device_private(ac->ac_dv); amr = device_private(device_parent(sc->sc_ld.sc_dv)); if (ac->ac_status != AMR_STATUS_SUCCESS) { printf("%s: cmd status 0x%02x\n", device_xname(sc->sc_ld.sc_dv), ac->ac_status); bp->b_error = EIO; bp->b_resid = bp->b_bcount; } else bp->b_resid = 0; amr_ccb_unmap(amr, ac); amr_ccb_free(amr, ac); lddone(&sc->sc_ld, bp); } static int ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) { struct ld_amr_softc *sc; sc = (struct ld_amr_softc *)ld; return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, NULL)); } MODULE(MODULE_CLASS_DRIVER, ld_amr, "ld,amr"); #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_amr_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_amr, cfdata_ioconf_ld_amr); break; case MODULE_CMD_FINI: error = config_fini_component(no_cfdriver_vec, cfattach_ioconf_ld_amr, cfdata_ioconf_ld_amr); break; default: error = ENOTTY; break; } #endif return error; }