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