263 lines
6.5 KiB
C
263 lines
6.5 KiB
C
/* $NetBSD: ld_cac.c,v 1.31 2017/08/09 16:44:40 mlelstv Exp $ */
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/*-
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* Copyright (c) 2000, 2006 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Compaq array controller front-end for ld(4) driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ld_cac.c,v 1.31 2017/08/09 16:44:40 mlelstv Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/bufq.h>
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#include <sys/endian.h>
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#include <sys/dkio.h>
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#include <sys/disk.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <dev/ldvar.h>
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#include <dev/ic/cacreg.h>
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#include <dev/ic/cacvar.h>
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#include "ioconf.h"
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struct ld_cac_softc {
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struct ld_softc sc_ld;
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kmutex_t *sc_mutex;
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int sc_hwunit;
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int sc_serrcnt;
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struct timeval sc_serrtm;
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};
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void ld_cac_attach(device_t, device_t, void *);
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void ld_cac_done(device_t, void *, int);
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int ld_cac_dump(struct ld_softc *, void *, int, int);
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int ld_cac_match(device_t, cfdata_t, void *);
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int ld_cac_start(struct ld_softc *, struct buf *);
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static const struct timeval ld_cac_serrintvl = { 60, 0 };
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CFATTACH_DECL_NEW(ld_cac, sizeof(struct ld_cac_softc),
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ld_cac_match, ld_cac_attach, NULL, NULL);
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int
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ld_cac_match(device_t parent, cfdata_t match, void *aux)
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{
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return (1);
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}
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void
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ld_cac_attach(device_t parent, device_t self, void *aux)
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{
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struct cac_drive_info dinfo;
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struct cac_attach_args *caca;
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struct ld_cac_softc *sc = device_private(self);
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struct cac_softc *cac = device_private(parent);
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struct ld_softc *ld = &sc->sc_ld;
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const char *type;
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caca = aux;
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ld->sc_dv = self;
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sc->sc_mutex = &cac->sc_mutex;
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sc->sc_hwunit = caca->caca_unit;
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if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo),
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sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) {
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aprint_error(": CMD_GET_LOG_DRV_INFO failed\n");
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return;
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}
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ld->sc_secsize = CAC_GET2(dinfo.secsize);
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ld->sc_maxxfer = CAC_MAX_XFER;
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ld->sc_maxqueuecnt = (CAC_MAX_CCBS - 1) / cac->sc_nunits;
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ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) *
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CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors);
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ld->sc_start = ld_cac_start;
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ld->sc_dump = ld_cac_dump;
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switch (CAC_GET1(dinfo.mirror)) {
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case 0:
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type = "standalone disk or RAID0";
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break;
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case 1:
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type = "RAID4";
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break;
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case 2:
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type = "RAID1";
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break;
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case 3:
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type = "RAID5";
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break;
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default:
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type = "unknown type of";
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break;
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}
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aprint_normal(": %s array\n", type);
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/* XXX We should verify this... */
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ld->sc_flags = LDF_ENABLED | LDF_MPSAFE;
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ldattach(ld, BUFQ_DISK_DEFAULT_STRAT);
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}
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int
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ld_cac_start(struct ld_softc *ld, struct buf *bp)
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{
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int flags, cmd;
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struct cac_softc *cac;
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struct ld_cac_softc *sc;
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struct cac_context cc;
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sc = (struct ld_cac_softc *)ld;
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cac = device_private(device_parent(ld->sc_dv));
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cc.cc_handler = ld_cac_done;
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cc.cc_context = bp;
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cc.cc_dv = ld->sc_dv;
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if ((bp->b_flags & B_READ) == 0) {
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cmd = CAC_CMD_WRITE;
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flags = CAC_CCB_DATA_OUT;
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} else {
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cmd = CAC_CMD_READ;
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flags = CAC_CCB_DATA_IN;
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}
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return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit,
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bp->b_rawblkno, flags, &cc));
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}
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int
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ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
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{
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struct ld_cac_softc *sc;
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sc = (struct ld_cac_softc *)ld;
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return (cac_cmd(device_private(device_parent(ld->sc_dv)),
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CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize,
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sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL));
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}
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void
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ld_cac_done(device_t dv, void *context, int error)
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{
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struct buf *bp;
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struct ld_cac_softc *sc;
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int rv;
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bp = context;
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rv = 0;
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sc = device_private(dv);
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if ((error & CAC_RET_CMD_REJECTED) == CAC_RET_CMD_REJECTED) {
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aprint_error_dev(dv, "command rejected\n");
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rv = EIO;
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}
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if (rv == 0 && (error & CAC_RET_INVAL_BLOCK) != 0) {
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aprint_error_dev(dv, "invalid request block\n");
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rv = EIO;
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}
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if (rv == 0 && (error & CAC_RET_HARD_ERROR) != 0) {
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aprint_error_dev(dv, "hard error\n");
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rv = EIO;
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}
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if (rv == 0 && (error & CAC_RET_SOFT_ERROR) != 0) {
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sc->sc_serrcnt++;
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if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) {
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sc->sc_serrcnt = 0;
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aprint_error_dev(dv,
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"%d soft errors; array may be degraded\n",
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sc->sc_serrcnt);
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}
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}
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if (rv) {
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bp->b_error = rv;
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bp->b_resid = bp->b_bcount;
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} else
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bp->b_resid = 0;
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mutex_exit(sc->sc_mutex);
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lddone(&sc->sc_ld, bp);
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mutex_enter(sc->sc_mutex);
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}
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MODULE(MODULE_CLASS_DRIVER, ld_cac, "ld,cac");
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#ifdef _MODULE
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/*
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* XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
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* XXX it will be defined in the common-code module
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*/
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#undef CFDRIVER_DECL
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#define CFDRIVER_DECL(name, class, attr)
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#include "ioconf.c"
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#endif
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static int
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ld_cac_modcmd(modcmd_t cmd, void *opaque)
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{
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int error = 0;
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#ifdef _MODULE
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/*
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* We ignore the cfdriver_vec[] that ioconf provides, since
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* the cfdrivers are attached already.
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*/
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static struct cfdriver * const no_cfdriver_vec[] = { NULL };
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#endif
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#ifdef _MODULE
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switch (cmd) {
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case MODULE_CMD_INIT:
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error = config_init_component(no_cfdriver_vec,
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cfattach_ioconf_ld_cac, cfdata_ioconf_ld_cac);
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break;
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case MODULE_CMD_FINI:
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error = config_fini_component(no_cfdriver_vec,
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cfattach_ioconf_ld_cac, cfdata_ioconf_ld_cac);
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break;
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default:
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error = ENOTTY;
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break;
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}
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#endif
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return error;
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}
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