296 lines
7.4 KiB
C
296 lines
7.4 KiB
C
/* $NetBSD: ld_mlx.c,v 1.23 2016/09/27 03:33:32 pgoyette Exp $ */
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/*-
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* Copyright (c) 2001 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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* Mylex DAC960 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_mlx.c,v 1.23 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 <machine/vmparam.h>
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#include <sys/bus.h>
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#include <dev/ldvar.h>
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#include <dev/ic/mlxreg.h>
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#include <dev/ic/mlxio.h>
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#include <dev/ic/mlxvar.h>
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#include "ioconf.h"
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struct ld_mlx_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 void ld_mlx_attach(device_t, device_t, void *);
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static int ld_mlx_detach(device_t, int);
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static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
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struct buf *);
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static int ld_mlx_dump(struct ld_softc *, void *, int, int);
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static void ld_mlx_handler(struct mlx_ccb *);
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static int ld_mlx_match(device_t, cfdata_t, void *);
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static int ld_mlx_start(struct ld_softc *, struct buf *);
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CFATTACH_DECL_NEW(ld_mlx, sizeof(struct ld_mlx_softc),
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ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL);
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static int
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ld_mlx_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_mlx_attach(device_t parent, device_t self, void *aux)
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{
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struct mlx_attach_args *mlxa = aux;
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struct ld_mlx_softc *sc = device_private(self);
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struct ld_softc *ld = &sc->sc_ld;
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struct mlx_softc *mlx = device_private(parent);
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struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
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const char *statestr;
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ld->sc_dv = self;
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sc->sc_hwunit = mlxa->mlxa_unit;
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ld->sc_maxxfer = MLX_MAX_XFER;
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ld->sc_secsize = MLX_SECTOR_SIZE;
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ld->sc_maxqueuecnt = 1;
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ld->sc_start = ld_mlx_start;
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ld->sc_dump = ld_mlx_dump;
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ld->sc_secperunit = ms->ms_size;
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/*
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* Report on current status, and attach to the ld driver proper.
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*/
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switch (ms->ms_state) {
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case MLX_SYSD_ONLINE:
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statestr = "online";
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ld->sc_flags = LDF_ENABLED;
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break;
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case MLX_SYSD_CRITICAL:
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statestr = "critical";
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ld->sc_flags = LDF_ENABLED;
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break;
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case MLX_SYSD_OFFLINE:
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statestr = "offline";
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break;
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default:
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statestr = "state unknown";
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break;
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}
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if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
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aprint_normal(": JBOD, %s\n", statestr);
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else
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aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
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ldattach(ld, BUFQ_DISK_DEFAULT_STRAT);
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}
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static int
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ld_mlx_detach(device_t dv, int flags)
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{
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struct ld_mlx_softc *sc = device_private(dv);
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struct ld_softc *ld = &sc->sc_ld;
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struct mlx_softc *mlx = device_private(device_parent(dv));
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int rv;
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if ((rv = ldbegindetach(ld, flags)) != 0)
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return (rv);
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ldenddetach(ld);
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mlx_flush(mlx, 1);
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return (0);
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}
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static int
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ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
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int dowrite, struct buf *bp)
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{
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struct mlx_ccb *mc;
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struct mlx_softc *mlx;
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int s, rv;
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bus_addr_t sgphys;
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mlx = device_private(device_parent(sc->sc_ld.sc_dv));
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if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
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return (rv);
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/* Map the data transfer. */
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rv = mlx_ccb_map(mlx, mc, data, datasize,
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dowrite ? MC_XFER_OUT : MC_XFER_IN);
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if (rv != 0) {
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mlx_ccb_free(mlx, mc);
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return (rv);
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}
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/* Build the command. */
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sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
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datasize /= MLX_SECTOR_SIZE;
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if (mlx->mlx_ci.ci_iftype <= 2)
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mlx_make_type1(mc,
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dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
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datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
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mc->mc_nsgent);
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else
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mlx_make_type5(mc,
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dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
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datasize & 0xff,
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(sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
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blkno, sgphys, mc->mc_nsgent);
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if (bp == NULL) {
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s = splbio();
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rv = mlx_ccb_poll(mlx, mc, 10000);
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mlx_ccb_unmap(mlx, mc);
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mlx_ccb_free(mlx, mc);
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splx(s);
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} else {
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mc->mc_mx.mx_handler = ld_mlx_handler;
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mc->mc_mx.mx_context = bp;
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mc->mc_mx.mx_dv = sc->sc_ld.sc_dv;
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mlx_ccb_enqueue(mlx, mc);
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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_mlx_start(struct ld_softc *ld, struct buf *bp)
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{
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return (ld_mlx_dobio((struct ld_mlx_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_mlx_handler(struct mlx_ccb *mc)
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{
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struct buf *bp;
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struct mlx_context *mx;
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struct ld_mlx_softc *sc;
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struct mlx_softc *mlx;
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mx = &mc->mc_mx;
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bp = mx->mx_context;
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sc = device_private(mx->mx_dv);
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mlx = device_private(device_parent(sc->sc_ld.sc_dv));
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if (mc->mc_status != MLX_STATUS_OK) {
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bp->b_error = EIO;
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bp->b_resid = bp->b_bcount;
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if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
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printf("%s: drive offline\n",
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device_xname(sc->sc_ld.sc_dv));
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else
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printf("%s: I/O error - %s\n",
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device_xname(sc->sc_ld.sc_dv),
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mlx_ccb_diagnose(mc));
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} else
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bp->b_resid = 0;
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mlx_ccb_unmap(mlx, mc);
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mlx_ccb_free(mlx, mc);
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lddone(&sc->sc_ld, bp);
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}
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static int
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ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
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{
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return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
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blkcnt * ld->sc_secsize, blkno, 1, NULL));
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}
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MODULE(MODULE_CLASS_DRIVER, ld_mlx, "ld");
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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_mlx_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_mlx, cfdata_ioconf_ld_mlx);
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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_mlx, cfdata_ioconf_ld_mlx);
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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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