1 /* $NetBSD: ld_mlx.c,v 1.15 2007/10/19 11:59:55 ad 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 1.15 2007/10/19 11:59:55 ad 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/bufq.h> 54 #include <sys/endian.h> 55 #include <sys/dkio.h> 56 #include <sys/disk.h> 57 #if NRND > 0 58 #include <sys/rnd.h> 59 #endif 60 61 #include <machine/vmparam.h> 62 #include <sys/bus.h> 63 64 #include <dev/ldvar.h> 65 66 #include <dev/ic/mlxreg.h> 67 #include <dev/ic/mlxio.h> 68 #include <dev/ic/mlxvar.h> 69 70 struct ld_mlx_softc { 71 struct ld_softc sc_ld; 72 int sc_hwunit; 73 }; 74 75 static void ld_mlx_attach(struct device *, struct device *, void *); 76 static int ld_mlx_detach(struct device *, int); 77 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int, 78 struct buf *); 79 static int ld_mlx_dump(struct ld_softc *, void *, int, int); 80 static void ld_mlx_handler(struct mlx_ccb *); 81 static int ld_mlx_match(struct device *, struct cfdata *, void *); 82 static int ld_mlx_start(struct ld_softc *, struct buf *); 83 84 CFATTACH_DECL(ld_mlx, sizeof(struct ld_mlx_softc), 85 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL); 86 87 static int 88 ld_mlx_match(struct device *parent, struct cfdata *match, 89 void *aux) 90 { 91 92 return (1); 93 } 94 95 static void 96 ld_mlx_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct mlx_attach_args *mlxa; 99 struct ld_mlx_softc *sc; 100 struct ld_softc *ld; 101 struct mlx_softc *mlx; 102 struct mlx_sysdrive *ms; 103 const char *statestr; 104 105 sc = (struct ld_mlx_softc *)self; 106 ld = &sc->sc_ld; 107 mlx = (struct mlx_softc *)parent; 108 mlxa = aux; 109 ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 110 111 sc->sc_hwunit = mlxa->mlxa_unit; 112 ld->sc_maxxfer = MLX_MAX_XFER; 113 ld->sc_secsize = MLX_SECTOR_SIZE; 114 ld->sc_maxqueuecnt = 1; 115 ld->sc_start = ld_mlx_start; 116 ld->sc_dump = ld_mlx_dump; 117 ld->sc_secperunit = ms->ms_size; 118 119 /* 120 * Report on current status, and attach to the ld driver proper. 121 */ 122 switch (ms->ms_state) { 123 case MLX_SYSD_ONLINE: 124 statestr = "online"; 125 ld->sc_flags = LDF_ENABLED; 126 break; 127 128 case MLX_SYSD_CRITICAL: 129 statestr = "critical"; 130 ld->sc_flags = LDF_ENABLED; 131 break; 132 133 case MLX_SYSD_OFFLINE: 134 statestr = "offline"; 135 break; 136 137 default: 138 statestr = "state unknown"; 139 break; 140 } 141 142 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 143 aprint_normal(": JBOD, %s\n", statestr); 144 else 145 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 146 147 ldattach(ld); 148 } 149 150 static int 151 ld_mlx_detach(struct device *dv, int flags) 152 { 153 int rv; 154 155 if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0) 156 return (rv); 157 ldenddetach((struct ld_softc *)dv); 158 mlx_flush((struct mlx_softc *)device_parent(dv), 1); 159 160 return (0); 161 } 162 163 static int 164 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 165 int dowrite, struct buf *bp) 166 { 167 struct mlx_ccb *mc; 168 struct mlx_softc *mlx; 169 int s, rv; 170 bus_addr_t sgphys; 171 172 mlx = (struct mlx_softc *)device_parent(&sc->sc_ld.sc_dv); 173 174 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 175 return (rv); 176 177 /* Map the data transfer. */ 178 rv = mlx_ccb_map(mlx, mc, data, datasize, 179 dowrite ? MC_XFER_OUT : MC_XFER_IN); 180 if (rv != 0) { 181 mlx_ccb_free(mlx, mc); 182 return (rv); 183 } 184 185 /* Build the command. */ 186 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 187 datasize /= MLX_SECTOR_SIZE; 188 189 if (mlx->mlx_ci.ci_iftype <= 2) 190 mlx_make_type1(mc, 191 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 192 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 193 mc->mc_nsgent); 194 else 195 mlx_make_type5(mc, 196 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 197 datasize & 0xff, 198 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 199 blkno, sgphys, mc->mc_nsgent); 200 201 if (bp == NULL) { 202 s = splbio(); 203 rv = mlx_ccb_poll(mlx, mc, 10000); 204 mlx_ccb_unmap(mlx, mc); 205 mlx_ccb_free(mlx, mc); 206 splx(s); 207 } else { 208 mc->mc_mx.mx_handler = ld_mlx_handler; 209 mc->mc_mx.mx_context = bp; 210 mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv; 211 mlx_ccb_enqueue(mlx, mc); 212 rv = 0; 213 } 214 215 return (rv); 216 } 217 218 static int 219 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 220 { 221 222 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 223 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 224 } 225 226 static void 227 ld_mlx_handler(struct mlx_ccb *mc) 228 { 229 struct buf *bp; 230 struct mlx_context *mx; 231 struct ld_mlx_softc *sc; 232 struct mlx_softc *mlx; 233 234 mx = &mc->mc_mx; 235 bp = mx->mx_context; 236 sc = (struct ld_mlx_softc *)mx->mx_dv; 237 mlx = (struct mlx_softc *)device_parent(&sc->sc_ld.sc_dv); 238 239 if (mc->mc_status != MLX_STATUS_OK) { 240 bp->b_error = EIO; 241 bp->b_resid = bp->b_bcount; 242 243 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 244 printf("%s: drive offline\n", 245 sc->sc_ld.sc_dv.dv_xname); 246 else 247 printf("%s: I/O error - %s\n", 248 sc->sc_ld.sc_dv.dv_xname, 249 mlx_ccb_diagnose(mc)); 250 } else 251 bp->b_resid = 0; 252 253 mlx_ccb_unmap(mlx, mc); 254 mlx_ccb_free(mlx, mc); 255 lddone(&sc->sc_ld, bp); 256 } 257 258 static int 259 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 260 { 261 262 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 263 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 264 } 265