ld_mlx.c revision 1.3
1 /* $NetBSD: ld_mlx.c,v 1.3 2001/11/13 13:14:40 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Mylex DAC960 front-end for ld(4) driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: ld_mlx.c,v 1.3 2001/11/13 13:14:40 lukem Exp $"); 45 46 #include "rnd.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/device.h> 52 #include <sys/buf.h> 53 #include <sys/endian.h> 54 #include <sys/dkio.h> 55 #include <sys/disk.h> 56 #if NRND > 0 57 #include <sys/rnd.h> 58 #endif 59 60 #include <machine/vmparam.h> 61 #include <machine/bus.h> 62 63 #include <dev/ldvar.h> 64 65 #include <dev/ic/mlxreg.h> 66 #include <dev/ic/mlxio.h> 67 #include <dev/ic/mlxvar.h> 68 69 struct ld_mlx_softc { 70 struct ld_softc sc_ld; 71 int sc_hwunit; 72 }; 73 74 static void ld_mlx_attach(struct device *, struct device *, void *); 75 static int ld_mlx_detach(struct device *, int); 76 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int, 77 struct buf *); 78 static int ld_mlx_dump(struct ld_softc *, void *, int, int); 79 static void ld_mlx_handler(struct mlx_ccb *); 80 static int ld_mlx_match(struct device *, struct cfdata *, void *); 81 static int ld_mlx_start(struct ld_softc *, struct buf *); 82 83 struct cfattach ld_mlx_ca = { 84 sizeof(struct ld_mlx_softc), 85 ld_mlx_match, 86 ld_mlx_attach, 87 ld_mlx_detach 88 }; 89 90 static int 91 ld_mlx_match(struct device *parent, struct cfdata *match, void *aux) 92 { 93 94 return (1); 95 } 96 97 static void 98 ld_mlx_attach(struct device *parent, struct device *self, void *aux) 99 { 100 struct mlx_attach_args *mlxa; 101 struct ld_mlx_softc *sc; 102 struct ld_softc *ld; 103 struct mlx_softc *mlx; 104 struct mlx_sysdrive *ms; 105 const char *statestr; 106 107 sc = (struct ld_mlx_softc *)self; 108 ld = &sc->sc_ld; 109 mlx = (struct mlx_softc *)parent; 110 mlxa = aux; 111 ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 112 113 sc->sc_hwunit = mlxa->mlxa_unit; 114 ld->sc_maxxfer = MLX_MAX_XFER; 115 ld->sc_secsize = MLX_SECTOR_SIZE; 116 ld->sc_maxqueuecnt = 1; 117 ld->sc_start = ld_mlx_start; 118 ld->sc_dump = ld_mlx_dump; 119 ld->sc_secperunit = ms->ms_size; 120 121 /* 122 * Report on current status, and attach to the ld driver proper. 123 */ 124 switch (ms->ms_state) { 125 case MLX_SYSD_ONLINE: 126 statestr = "online"; 127 ld->sc_flags = LDF_ENABLED; 128 break; 129 130 case MLX_SYSD_CRITICAL: 131 statestr = "critical"; 132 ld->sc_flags = LDF_ENABLED; 133 break; 134 135 case MLX_SYSD_OFFLINE: 136 statestr = "offline"; 137 break; 138 139 default: 140 statestr = "state unknown"; 141 break; 142 } 143 144 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 145 printf(": JBOD, %s\n", statestr); 146 else 147 printf(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 148 149 ldattach(ld); 150 } 151 152 static int 153 ld_mlx_detach(struct device *dv, int flags) 154 { 155 int rv; 156 157 if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0) 158 return (rv); 159 ldenddetach((struct ld_softc *)dv); 160 mlx_flush((struct mlx_softc *)dv->dv_parent, 1); 161 162 return (0); 163 } 164 165 static int 166 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 167 int dowrite, struct buf *bp) 168 { 169 struct mlx_ccb *mc; 170 struct mlx_softc *mlx; 171 int s, rv; 172 bus_addr_t sgphys; 173 174 mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent; 175 176 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 177 return (rv); 178 179 /* Map the data transfer. */ 180 rv = mlx_ccb_map(mlx, mc, data, datasize, 181 dowrite ? MC_XFER_OUT : MC_XFER_IN); 182 if (rv != 0) { 183 mlx_ccb_free(mlx, mc); 184 return (rv); 185 } 186 187 /* Build the command. */ 188 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 189 datasize /= MLX_SECTOR_SIZE; 190 191 if (mlx->mlx_iftype == 2) 192 mlx_make_type1(mc, 193 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 194 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 195 mc->mc_nsgent); 196 else 197 mlx_make_type5(mc, 198 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 199 datasize & 0xff, 200 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 201 blkno, sgphys, mc->mc_nsgent); 202 203 if (bp == NULL) { 204 s = splbio(); 205 rv = mlx_ccb_poll(mlx, mc, 10000); 206 mlx_ccb_unmap(mlx, mc); 207 mlx_ccb_free(mlx, mc); 208 splx(s); 209 } else { 210 mc->mc_mx.mx_handler = ld_mlx_handler; 211 mc->mc_mx.mx_context = bp; 212 mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv; 213 mlx_ccb_enqueue(mlx, mc); 214 rv = 0; 215 } 216 217 return (rv); 218 } 219 220 static int 221 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 222 { 223 224 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 225 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 226 } 227 228 static void 229 ld_mlx_handler(struct mlx_ccb *mc) 230 { 231 struct buf *bp; 232 struct mlx_context *mx; 233 struct ld_mlx_softc *sc; 234 struct mlx_softc *mlx; 235 236 mx = &mc->mc_mx; 237 bp = mx->mx_context; 238 sc = (struct ld_mlx_softc *)mx->mx_dv; 239 mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent; 240 241 if (mc->mc_status != MLX_STATUS_OK) { 242 bp->b_flags |= B_ERROR; 243 bp->b_error = EIO; 244 bp->b_resid = bp->b_bcount; 245 246 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 247 printf("%s: drive offline\n", 248 sc->sc_ld.sc_dv.dv_xname); 249 else 250 printf("%s: I/O error - %s\n", 251 sc->sc_ld.sc_dv.dv_xname, 252 mlx_ccb_diagnose(mc)); 253 } else 254 bp->b_resid = 0; 255 256 mlx_ccb_unmap(mlx, mc); 257 mlx_ccb_free(mlx, mc); 258 lddone(&sc->sc_ld, bp); 259 } 260 261 static int 262 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 263 { 264 265 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 266 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 267 } 268
Indexes created Mon Sep 22 21:09:42 GMT 2025