NetBSD/sys/dev/ic/ld_mlx.c

252 lines
6.4 KiB
C

/* $NetBSD: ld_mlx.c,v 1.20 2012/02/02 19:43:03 tls Exp $ */
/*-
* Copyright (c) 2001 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.
*/
/*
* Mylex DAC960 front-end for ld(4) driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ld_mlx.c,v 1.20 2012/02/02 19:43:03 tls Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/bufq.h>
#include <sys/endian.h>
#include <sys/dkio.h>
#include <sys/disk.h>
#include <sys/rnd.h>
#include <machine/vmparam.h>
#include <sys/bus.h>
#include <dev/ldvar.h>
#include <dev/ic/mlxreg.h>
#include <dev/ic/mlxio.h>
#include <dev/ic/mlxvar.h>
struct ld_mlx_softc {
struct ld_softc sc_ld;
int sc_hwunit;
};
static void ld_mlx_attach(device_t, device_t, void *);
static int ld_mlx_detach(device_t, int);
static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
struct buf *);
static int ld_mlx_dump(struct ld_softc *, void *, int, int);
static void ld_mlx_handler(struct mlx_ccb *);
static int ld_mlx_match(device_t, cfdata_t, void *);
static int ld_mlx_start(struct ld_softc *, struct buf *);
CFATTACH_DECL_NEW(ld_mlx, sizeof(struct ld_mlx_softc),
ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL);
static int
ld_mlx_match(device_t parent, cfdata_t match, void *aux)
{
return (1);
}
static void
ld_mlx_attach(device_t parent, device_t self, void *aux)
{
struct mlx_attach_args *mlxa = aux;
struct ld_mlx_softc *sc = device_private(self);
struct ld_softc *ld = &sc->sc_ld;
struct mlx_softc *mlx = device_private(parent);
struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
const char *statestr;
ld->sc_dv = self;
sc->sc_hwunit = mlxa->mlxa_unit;
ld->sc_maxxfer = MLX_MAX_XFER;
ld->sc_secsize = MLX_SECTOR_SIZE;
ld->sc_maxqueuecnt = 1;
ld->sc_start = ld_mlx_start;
ld->sc_dump = ld_mlx_dump;
ld->sc_secperunit = ms->ms_size;
/*
* Report on current status, and attach to the ld driver proper.
*/
switch (ms->ms_state) {
case MLX_SYSD_ONLINE:
statestr = "online";
ld->sc_flags = LDF_ENABLED;
break;
case MLX_SYSD_CRITICAL:
statestr = "critical";
ld->sc_flags = LDF_ENABLED;
break;
case MLX_SYSD_OFFLINE:
statestr = "offline";
break;
default:
statestr = "state unknown";
break;
}
if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
aprint_normal(": JBOD, %s\n", statestr);
else
aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
ldattach(ld);
}
static int
ld_mlx_detach(device_t dv, int flags)
{
struct ld_mlx_softc *sc = device_private(dv);
struct ld_softc *ld = &sc->sc_ld;
struct mlx_softc *mlx = device_private(device_parent(dv));
int rv;
if ((rv = ldbegindetach(ld, flags)) != 0)
return (rv);
ldenddetach(ld);
mlx_flush(mlx, 1);
return (0);
}
static int
ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
int dowrite, struct buf *bp)
{
struct mlx_ccb *mc;
struct mlx_softc *mlx;
int s, rv;
bus_addr_t sgphys;
mlx = device_private(device_parent(sc->sc_ld.sc_dv));
if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
return (rv);
/* Map the data transfer. */
rv = mlx_ccb_map(mlx, mc, data, datasize,
dowrite ? MC_XFER_OUT : MC_XFER_IN);
if (rv != 0) {
mlx_ccb_free(mlx, mc);
return (rv);
}
/* Build the command. */
sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
datasize /= MLX_SECTOR_SIZE;
if (mlx->mlx_ci.ci_iftype <= 2)
mlx_make_type1(mc,
dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
mc->mc_nsgent);
else
mlx_make_type5(mc,
dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
datasize & 0xff,
(sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
blkno, sgphys, mc->mc_nsgent);
if (bp == NULL) {
s = splbio();
rv = mlx_ccb_poll(mlx, mc, 10000);
mlx_ccb_unmap(mlx, mc);
mlx_ccb_free(mlx, mc);
splx(s);
} else {
mc->mc_mx.mx_handler = ld_mlx_handler;
mc->mc_mx.mx_context = bp;
mc->mc_mx.mx_dv = sc->sc_ld.sc_dv;
mlx_ccb_enqueue(mlx, mc);
rv = 0;
}
return (rv);
}
static int
ld_mlx_start(struct ld_softc *ld, struct buf *bp)
{
return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data,
bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
}
static void
ld_mlx_handler(struct mlx_ccb *mc)
{
struct buf *bp;
struct mlx_context *mx;
struct ld_mlx_softc *sc;
struct mlx_softc *mlx;
mx = &mc->mc_mx;
bp = mx->mx_context;
sc = device_private(mx->mx_dv);
mlx = device_private(device_parent(sc->sc_ld.sc_dv));
if (mc->mc_status != MLX_STATUS_OK) {
bp->b_error = EIO;
bp->b_resid = bp->b_bcount;
if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
printf("%s: drive offline\n",
device_xname(sc->sc_ld.sc_dv));
else
printf("%s: I/O error - %s\n",
device_xname(sc->sc_ld.sc_dv),
mlx_ccb_diagnose(mc));
} else
bp->b_resid = 0;
mlx_ccb_unmap(mlx, mc);
mlx_ccb_free(mlx, mc);
lddone(&sc->sc_ld, bp);
}
static int
ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
{
return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
blkcnt * ld->sc_secsize, blkno, 1, NULL));
}