1 /* $NetBSD: ld_mlx.c,v 1.7 2002/10/02 16:33:34 thorpej 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 1.7 2002/10/02 16:33:34 thorpej 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 CFATTACH_DECL(ld_mlx, sizeof(struct ld_mlx_softc), 84 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL); 85 86 static int 87 ld_mlx_match(struct device *parent, struct cfdata *match, void *aux) 88 { 89 90 return (1); 91 } 92 93 static void 94 ld_mlx_attach(struct device *parent, struct device *self, void *aux) 95 { 96 struct mlx_attach_args *mlxa; 97 struct ld_mlx_softc *sc; 98 struct ld_softc *ld; 99 struct mlx_softc *mlx; 100 struct mlx_sysdrive *ms; 101 const char *statestr; 102 103 sc = (struct ld_mlx_softc *)self; 104 ld = &sc->sc_ld; 105 mlx = (struct mlx_softc *)parent; 106 mlxa = aux; 107 ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 108 109 sc->sc_hwunit = mlxa->mlxa_unit; 110 ld->sc_maxxfer = MLX_MAX_XFER; 111 ld->sc_secsize = MLX_SECTOR_SIZE; 112 ld->sc_maxqueuecnt = 1; 113 ld->sc_start = ld_mlx_start; 114 ld->sc_dump = ld_mlx_dump; 115 ld->sc_secperunit = ms->ms_size; 116 117 /* 118 * Report on current status, and attach to the ld driver proper. 119 */ 120 switch (ms->ms_state) { 121 case MLX_SYSD_ONLINE: 122 statestr = "online"; 123 ld->sc_flags = LDF_ENABLED; 124 break; 125 126 case MLX_SYSD_CRITICAL: 127 statestr = "critical"; 128 ld->sc_flags = LDF_ENABLED; 129 break; 130 131 case MLX_SYSD_OFFLINE: 132 statestr = "offline"; 133 break; 134 135 default: 136 statestr = "state unknown"; 137 break; 138 } 139 140 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 141 printf(": JBOD, %s\n", statestr); 142 else 143 printf(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 144 145 ldattach(ld); 146 } 147 148 static int 149 ld_mlx_detach(struct device *dv, int flags) 150 { 151 int rv; 152 153 if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0) 154 return (rv); 155 ldenddetach((struct ld_softc *)dv); 156 mlx_flush((struct mlx_softc *)dv->dv_parent, 1); 157 158 return (0); 159 } 160 161 static int 162 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 163 int dowrite, struct buf *bp) 164 { 165 struct mlx_ccb *mc; 166 struct mlx_softc *mlx; 167 int s, rv; 168 bus_addr_t sgphys; 169 170 mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent; 171 172 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 173 return (rv); 174 175 /* Map the data transfer. */ 176 rv = mlx_ccb_map(mlx, mc, data, datasize, 177 dowrite ? MC_XFER_OUT : MC_XFER_IN); 178 if (rv != 0) { 179 mlx_ccb_free(mlx, mc); 180 return (rv); 181 } 182 183 /* Build the command. */ 184 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 185 datasize /= MLX_SECTOR_SIZE; 186 187 if (mlx->mlx_ci.ci_iftype <= 2) 188 mlx_make_type1(mc, 189 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 190 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 191 mc->mc_nsgent); 192 else 193 mlx_make_type5(mc, 194 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 195 datasize & 0xff, 196 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 197 blkno, sgphys, mc->mc_nsgent); 198 199 if (bp == NULL) { 200 s = splbio(); 201 rv = mlx_ccb_poll(mlx, mc, 10000); 202 mlx_ccb_unmap(mlx, mc); 203 mlx_ccb_free(mlx, mc); 204 splx(s); 205 } else { 206 mc->mc_mx.mx_handler = ld_mlx_handler; 207 mc->mc_mx.mx_context = bp; 208 mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv; 209 mlx_ccb_enqueue(mlx, mc); 210 rv = 0; 211 } 212 213 return (rv); 214 } 215 216 static int 217 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 218 { 219 220 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 221 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 222 } 223 224 static void 225 ld_mlx_handler(struct mlx_ccb *mc) 226 { 227 struct buf *bp; 228 struct mlx_context *mx; 229 struct ld_mlx_softc *sc; 230 struct mlx_softc *mlx; 231 232 mx = &mc->mc_mx; 233 bp = mx->mx_context; 234 sc = (struct ld_mlx_softc *)mx->mx_dv; 235 mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent; 236 237 if (mc->mc_status != MLX_STATUS_OK) { 238 bp->b_flags |= B_ERROR; 239 bp->b_error = EIO; 240 bp->b_resid = bp->b_bcount; 241 242 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 243 printf("%s: drive offline\n", 244 sc->sc_ld.sc_dv.dv_xname); 245 else 246 printf("%s: I/O error - %s\n", 247 sc->sc_ld.sc_dv.dv_xname, 248 mlx_ccb_diagnose(mc)); 249 } else 250 bp->b_resid = 0; 251 252 mlx_ccb_unmap(mlx, mc); 253 mlx_ccb_free(mlx, mc); 254 lddone(&sc->sc_ld, bp); 255 } 256 257 static int 258 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 259 { 260 261 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 262 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 263 } 264