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ld_mlx.c revision 1.1
      1  1.1  ad /*	$NetBSD: ld_mlx.c,v 1.1 2001/02/04 17:05:12 ad Exp $	*/
      2  1.1  ad 
      3  1.1  ad /*-
      4  1.1  ad  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  1.1  ad  * All rights reserved.
      6  1.1  ad  *
      7  1.1  ad  * This code is derived from software contributed to The NetBSD Foundation
      8  1.1  ad  * by Andrew Doran.
      9  1.1  ad  *
     10  1.1  ad  * Redistribution and use in source and binary forms, with or without
     11  1.1  ad  * modification, are permitted provided that the following conditions
     12  1.1  ad  * are met:
     13  1.1  ad  * 1. Redistributions of source code must retain the above copyright
     14  1.1  ad  *    notice, this list of conditions and the following disclaimer.
     15  1.1  ad  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1  ad  *    notice, this list of conditions and the following disclaimer in the
     17  1.1  ad  *    documentation and/or other materials provided with the distribution.
     18  1.1  ad  * 3. All advertising materials mentioning features or use of this software
     19  1.1  ad  *    must display the following acknowledgement:
     20  1.1  ad  *        This product includes software developed by the NetBSD
     21  1.1  ad  *        Foundation, Inc. and its contributors.
     22  1.1  ad  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  1.1  ad  *    contributors may be used to endorse or promote products derived
     24  1.1  ad  *    from this software without specific prior written permission.
     25  1.1  ad  *
     26  1.1  ad  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  1.1  ad  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  1.1  ad  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  1.1  ad  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  1.1  ad  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  1.1  ad  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  1.1  ad  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  1.1  ad  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  1.1  ad  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  1.1  ad  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  1.1  ad  * POSSIBILITY OF SUCH DAMAGE.
     37  1.1  ad  */
     38  1.1  ad 
     39  1.1  ad /*
     40  1.1  ad  * Mylex DAC960 front-end for ld(4) driver.
     41  1.1  ad  */
     42  1.1  ad 
     43  1.1  ad #include "rnd.h"
     44  1.1  ad 
     45  1.1  ad #include <sys/param.h>
     46  1.1  ad #include <sys/systm.h>
     47  1.1  ad #include <sys/kernel.h>
     48  1.1  ad #include <sys/device.h>
     49  1.1  ad #include <sys/buf.h>
     50  1.1  ad #include <sys/endian.h>
     51  1.1  ad #include <sys/dkio.h>
     52  1.1  ad #include <sys/disk.h>
     53  1.1  ad #if NRND > 0
     54  1.1  ad #include <sys/rnd.h>
     55  1.1  ad #endif
     56  1.1  ad 
     57  1.1  ad #include <machine/vmparam.h>
     58  1.1  ad #include <machine/bus.h>
     59  1.1  ad 
     60  1.1  ad #include <dev/ldvar.h>
     61  1.1  ad 
     62  1.1  ad #include <dev/ic/mlxreg.h>
     63  1.1  ad #include <dev/ic/mlxio.h>
     64  1.1  ad #include <dev/ic/mlxvar.h>
     65  1.1  ad 
     66  1.1  ad struct ld_mlx_softc {
     67  1.1  ad 	struct	ld_softc sc_ld;
     68  1.1  ad 	int	sc_hwunit;
     69  1.1  ad };
     70  1.1  ad 
     71  1.1  ad static void	ld_mlx_attach(struct device *, struct device *, void *);
     72  1.1  ad static int	ld_mlx_detach(struct device *, int);
     73  1.1  ad static int	ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
     74  1.1  ad 			     struct buf *);
     75  1.1  ad static int	ld_mlx_dump(struct ld_softc *, void *, int, int);
     76  1.1  ad static void	ld_mlx_handler(struct mlx_ccb *);
     77  1.1  ad static int	ld_mlx_match(struct device *, struct cfdata *, void *);
     78  1.1  ad static int	ld_mlx_start(struct ld_softc *, struct buf *);
     79  1.1  ad 
     80  1.1  ad struct cfattach ld_mlx_ca = {
     81  1.1  ad 	sizeof(struct ld_mlx_softc),
     82  1.1  ad 	ld_mlx_match,
     83  1.1  ad 	ld_mlx_attach,
     84  1.1  ad 	ld_mlx_detach
     85  1.1  ad };
     86  1.1  ad 
     87  1.1  ad static int
     88  1.1  ad ld_mlx_match(struct device *parent, struct cfdata *match, void *aux)
     89  1.1  ad {
     90  1.1  ad 
     91  1.1  ad 	return (1);
     92  1.1  ad }
     93  1.1  ad 
     94  1.1  ad static void
     95  1.1  ad ld_mlx_attach(struct device *parent, struct device *self, void *aux)
     96  1.1  ad {
     97  1.1  ad 	struct mlx_attach_args *mlxa;
     98  1.1  ad 	struct ld_mlx_softc *sc;
     99  1.1  ad 	struct ld_softc *ld;
    100  1.1  ad 	struct mlx_softc *mlx;
    101  1.1  ad 	struct mlx_sysdrive *ms;
    102  1.1  ad 	const char *statestr;
    103  1.1  ad 
    104  1.1  ad 	sc = (struct ld_mlx_softc *)self;
    105  1.1  ad 	ld = &sc->sc_ld;
    106  1.1  ad 	mlx = (struct mlx_softc *)parent;
    107  1.1  ad 	mlxa = aux;
    108  1.1  ad 	ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
    109  1.1  ad 
    110  1.1  ad 	sc->sc_hwunit = mlxa->mlxa_unit;
    111  1.1  ad 	ld->sc_maxxfer = MLX_MAX_XFER;
    112  1.1  ad 	ld->sc_secsize = MLX_SECTOR_SIZE;
    113  1.1  ad 	ld->sc_maxqueuecnt = 1;
    114  1.1  ad 	ld->sc_start = ld_mlx_start;
    115  1.1  ad 	ld->sc_dump = ld_mlx_dump;
    116  1.1  ad 
    117  1.1  ad 	/*
    118  1.1  ad 	 * Build synthetic geometry.
    119  1.1  ad 	 */
    120  1.1  ad 	ld->sc_secperunit = ms->ms_size;
    121  1.1  ad 
    122  1.1  ad 	if (ld->sc_secperunit > 0x200000) {
    123  1.1  ad 		ld->sc_nheads = 255;
    124  1.1  ad 		ld->sc_nsectors = 63;
    125  1.1  ad 		ld->sc_ncylinders = ms->ms_size / (255 * 63);
    126  1.1  ad 	} else {
    127  1.1  ad 		ld->sc_nheads = 128;
    128  1.1  ad 		ld->sc_nsectors = 32;
    129  1.1  ad 		ld->sc_ncylinders = ms->ms_size / (128 * 32);
    130  1.1  ad 	}
    131  1.1  ad 
    132  1.1  ad 	/*
    133  1.1  ad 	 * Report on current status, and attach to the ld driver proper.
    134  1.1  ad 	 */
    135  1.1  ad 	switch (ms->ms_state) {
    136  1.1  ad 	case MLX_SYSD_ONLINE:
    137  1.1  ad 		statestr = "online";
    138  1.1  ad 		ld->sc_flags = LDF_ENABLED;
    139  1.1  ad 		break;
    140  1.1  ad 
    141  1.1  ad 	case MLX_SYSD_CRITICAL:
    142  1.1  ad 		statestr = "critical";
    143  1.1  ad 		ld->sc_flags = LDF_ENABLED;
    144  1.1  ad 		break;
    145  1.1  ad 
    146  1.1  ad 	case MLX_SYSD_OFFLINE:
    147  1.1  ad 		statestr = "offline";
    148  1.1  ad 		break;
    149  1.1  ad 
    150  1.1  ad 	default:
    151  1.1  ad 		statestr = "state unknown";
    152  1.1  ad 		break;
    153  1.1  ad 	}
    154  1.1  ad 
    155  1.1  ad 	if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
    156  1.1  ad 		printf(": JBOD, %s\n", statestr);
    157  1.1  ad 	else
    158  1.1  ad 		printf(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
    159  1.1  ad 
    160  1.1  ad 	ldattach(ld);
    161  1.1  ad }
    162  1.1  ad 
    163  1.1  ad static int
    164  1.1  ad ld_mlx_detach(struct device *dv, int flags)
    165  1.1  ad {
    166  1.1  ad 	int rv;
    167  1.1  ad 
    168  1.1  ad 	if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0)
    169  1.1  ad 		return (rv);
    170  1.1  ad 	ldenddetach((struct ld_softc *)dv);
    171  1.1  ad 	mlx_flush((struct mlx_softc *)dv->dv_parent, 1);
    172  1.1  ad 
    173  1.1  ad 	return (0);
    174  1.1  ad }
    175  1.1  ad 
    176  1.1  ad static int
    177  1.1  ad ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
    178  1.1  ad 	     int dowrite, struct buf *bp)
    179  1.1  ad {
    180  1.1  ad 	struct mlx_ccb *mc;
    181  1.1  ad 	struct mlx_softc *mlx;
    182  1.1  ad 	int s, rv;
    183  1.1  ad 	bus_addr_t sgphys;
    184  1.1  ad 
    185  1.1  ad 	mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent;
    186  1.1  ad 
    187  1.1  ad 	if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
    188  1.1  ad 		return (rv);
    189  1.1  ad 
    190  1.1  ad 	/* Map the data transfer. */
    191  1.1  ad 	rv = mlx_ccb_map(mlx, mc, data, datasize,
    192  1.1  ad 	    dowrite ? MC_XFER_OUT : MC_XFER_IN);
    193  1.1  ad 	if (rv != 0) {
    194  1.1  ad 		mlx_ccb_free(mlx, mc);
    195  1.1  ad 		return (rv);
    196  1.1  ad 	}
    197  1.1  ad 
    198  1.1  ad 	/* Build the command. */
    199  1.1  ad 	sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
    200  1.1  ad 	datasize /= MLX_SECTOR_SIZE;
    201  1.1  ad 
    202  1.1  ad 	if (mlx->mlx_iftype == 2)
    203  1.1  ad 		mlx_make_type1(mc,
    204  1.1  ad 		    dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
    205  1.1  ad 		    datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
    206  1.1  ad 		    mc->mc_nsgent);
    207  1.1  ad 	else
    208  1.1  ad 		mlx_make_type5(mc,
    209  1.1  ad 		    dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
    210  1.1  ad 		    datasize & 0xff,
    211  1.1  ad 		    (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
    212  1.1  ad 		    blkno, sgphys, mc->mc_nsgent);
    213  1.1  ad 
    214  1.1  ad 	if (bp == NULL) {
    215  1.1  ad 		s = splbio();
    216  1.1  ad 		rv = mlx_ccb_poll(mlx, mc, 10000);
    217  1.1  ad 		mlx_ccb_unmap(mlx, mc);
    218  1.1  ad 		mlx_ccb_free(mlx, mc);
    219  1.1  ad 		splx(s);
    220  1.1  ad 	} else {
    221  1.1  ad  		mc->mc_mx.mx_handler = ld_mlx_handler;
    222  1.1  ad 		mc->mc_mx.mx_context = bp;
    223  1.1  ad 		mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv;
    224  1.1  ad 		mlx_ccb_enqueue(mlx, mc);
    225  1.1  ad 		rv = 0;
    226  1.1  ad 	}
    227  1.1  ad 
    228  1.1  ad 	return (rv);
    229  1.1  ad }
    230  1.1  ad 
    231  1.1  ad static int
    232  1.1  ad ld_mlx_start(struct ld_softc *ld, struct buf *bp)
    233  1.1  ad {
    234  1.1  ad 
    235  1.1  ad 	return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data,
    236  1.1  ad 	    bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
    237  1.1  ad }
    238  1.1  ad 
    239  1.1  ad static void
    240  1.1  ad ld_mlx_handler(struct mlx_ccb *mc)
    241  1.1  ad {
    242  1.1  ad 	struct buf *bp;
    243  1.1  ad 	struct mlx_context *mx;
    244  1.1  ad 	struct ld_mlx_softc *sc;
    245  1.1  ad 	struct mlx_softc *mlx;
    246  1.1  ad 
    247  1.1  ad 	mx = &mc->mc_mx;
    248  1.1  ad 	bp = mx->mx_context;
    249  1.1  ad 	sc = (struct ld_mlx_softc *)mx->mx_dv;
    250  1.1  ad 	mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent;
    251  1.1  ad 
    252  1.1  ad 	if (mc->mc_status != MLX_STATUS_OK) {
    253  1.1  ad 		bp->b_flags |= B_ERROR;
    254  1.1  ad 		bp->b_error = EIO;
    255  1.1  ad 		bp->b_resid = bp->b_bcount;
    256  1.1  ad 
    257  1.1  ad 		if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
    258  1.1  ad 			printf("%s: drive offline\n",
    259  1.1  ad 			    sc->sc_ld.sc_dv.dv_xname);
    260  1.1  ad 		else
    261  1.1  ad 			printf("%s: I/O error - %s\n",
    262  1.1  ad 			    sc->sc_ld.sc_dv.dv_xname,
    263  1.1  ad 			    mlx_ccb_diagnose(mc));
    264  1.1  ad 	} else
    265  1.1  ad 		bp->b_resid = 0;
    266  1.1  ad 
    267  1.1  ad 	mlx_ccb_unmap(mlx, mc);
    268  1.1  ad 	mlx_ccb_free(mlx, mc);
    269  1.1  ad 	lddone(&sc->sc_ld, bp);
    270  1.1  ad }
    271  1.1  ad 
    272  1.1  ad static int
    273  1.1  ad ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
    274  1.1  ad {
    275  1.1  ad 
    276  1.1  ad 	return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
    277  1.1  ad 	    blkcnt * ld->sc_secsize, blkno, 1, NULL));
    278  1.1  ad }
    279