ld_mlx.c revision 1.16.2.1
1 /* $NetBSD: ld_mlx.c,v 1.16.2.1 2008/05/18 12:33:44 yamt 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Mylex DAC960 front-end for ld(4) driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ld_mlx.c,v 1.16.2.1 2008/05/18 12:33:44 yamt Exp $"); 38 39 #include "rnd.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/buf.h> 46 #include <sys/bufq.h> 47 #include <sys/endian.h> 48 #include <sys/dkio.h> 49 #include <sys/disk.h> 50 #if NRND > 0 51 #include <sys/rnd.h> 52 #endif 53 54 #include <machine/vmparam.h> 55 #include <sys/bus.h> 56 57 #include <dev/ldvar.h> 58 59 #include <dev/ic/mlxreg.h> 60 #include <dev/ic/mlxio.h> 61 #include <dev/ic/mlxvar.h> 62 63 struct ld_mlx_softc { 64 struct ld_softc sc_ld; 65 int sc_hwunit; 66 }; 67 68 static void ld_mlx_attach(struct device *, struct device *, void *); 69 static int ld_mlx_detach(struct device *, int); 70 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int, 71 struct buf *); 72 static int ld_mlx_dump(struct ld_softc *, void *, int, int); 73 static void ld_mlx_handler(struct mlx_ccb *); 74 static int ld_mlx_match(struct device *, struct cfdata *, void *); 75 static int ld_mlx_start(struct ld_softc *, struct buf *); 76 77 CFATTACH_DECL(ld_mlx, sizeof(struct ld_mlx_softc), 78 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL); 79 80 static int 81 ld_mlx_match(struct device *parent, struct cfdata *match, 82 void *aux) 83 { 84 85 return (1); 86 } 87 88 static void 89 ld_mlx_attach(struct device *parent, struct device *self, void *aux) 90 { 91 struct mlx_attach_args *mlxa; 92 struct ld_mlx_softc *sc; 93 struct ld_softc *ld; 94 struct mlx_softc *mlx; 95 struct mlx_sysdrive *ms; 96 const char *statestr; 97 98 sc = (struct ld_mlx_softc *)self; 99 ld = &sc->sc_ld; 100 mlx = (struct mlx_softc *)parent; 101 mlxa = aux; 102 ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 103 104 sc->sc_hwunit = mlxa->mlxa_unit; 105 ld->sc_maxxfer = MLX_MAX_XFER; 106 ld->sc_secsize = MLX_SECTOR_SIZE; 107 ld->sc_maxqueuecnt = 1; 108 ld->sc_start = ld_mlx_start; 109 ld->sc_dump = ld_mlx_dump; 110 ld->sc_secperunit = ms->ms_size; 111 112 /* 113 * Report on current status, and attach to the ld driver proper. 114 */ 115 switch (ms->ms_state) { 116 case MLX_SYSD_ONLINE: 117 statestr = "online"; 118 ld->sc_flags = LDF_ENABLED; 119 break; 120 121 case MLX_SYSD_CRITICAL: 122 statestr = "critical"; 123 ld->sc_flags = LDF_ENABLED; 124 break; 125 126 case MLX_SYSD_OFFLINE: 127 statestr = "offline"; 128 break; 129 130 default: 131 statestr = "state unknown"; 132 break; 133 } 134 135 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 136 aprint_normal(": JBOD, %s\n", statestr); 137 else 138 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 139 140 ldattach(ld); 141 } 142 143 static int 144 ld_mlx_detach(struct device *dv, int flags) 145 { 146 int rv; 147 148 if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0) 149 return (rv); 150 ldenddetach((struct ld_softc *)dv); 151 mlx_flush((struct mlx_softc *)device_parent(dv), 1); 152 153 return (0); 154 } 155 156 static int 157 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 158 int dowrite, struct buf *bp) 159 { 160 struct mlx_ccb *mc; 161 struct mlx_softc *mlx; 162 int s, rv; 163 bus_addr_t sgphys; 164 165 mlx = (struct mlx_softc *)device_parent(&sc->sc_ld.sc_dv); 166 167 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 168 return (rv); 169 170 /* Map the data transfer. */ 171 rv = mlx_ccb_map(mlx, mc, data, datasize, 172 dowrite ? MC_XFER_OUT : MC_XFER_IN); 173 if (rv != 0) { 174 mlx_ccb_free(mlx, mc); 175 return (rv); 176 } 177 178 /* Build the command. */ 179 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 180 datasize /= MLX_SECTOR_SIZE; 181 182 if (mlx->mlx_ci.ci_iftype <= 2) 183 mlx_make_type1(mc, 184 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 185 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 186 mc->mc_nsgent); 187 else 188 mlx_make_type5(mc, 189 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 190 datasize & 0xff, 191 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 192 blkno, sgphys, mc->mc_nsgent); 193 194 if (bp == NULL) { 195 s = splbio(); 196 rv = mlx_ccb_poll(mlx, mc, 10000); 197 mlx_ccb_unmap(mlx, mc); 198 mlx_ccb_free(mlx, mc); 199 splx(s); 200 } else { 201 mc->mc_mx.mx_handler = ld_mlx_handler; 202 mc->mc_mx.mx_context = bp; 203 mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv; 204 mlx_ccb_enqueue(mlx, mc); 205 rv = 0; 206 } 207 208 return (rv); 209 } 210 211 static int 212 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 213 { 214 215 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 216 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 217 } 218 219 static void 220 ld_mlx_handler(struct mlx_ccb *mc) 221 { 222 struct buf *bp; 223 struct mlx_context *mx; 224 struct ld_mlx_softc *sc; 225 struct mlx_softc *mlx; 226 227 mx = &mc->mc_mx; 228 bp = mx->mx_context; 229 sc = (struct ld_mlx_softc *)mx->mx_dv; 230 mlx = (struct mlx_softc *)device_parent(&sc->sc_ld.sc_dv); 231 232 if (mc->mc_status != MLX_STATUS_OK) { 233 bp->b_error = EIO; 234 bp->b_resid = bp->b_bcount; 235 236 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 237 printf("%s: drive offline\n", 238 device_xname(&sc->sc_ld.sc_dv)); 239 else 240 printf("%s: I/O error - %s\n", 241 device_xname(&sc->sc_ld.sc_dv), 242 mlx_ccb_diagnose(mc)); 243 } else 244 bp->b_resid = 0; 245 246 mlx_ccb_unmap(mlx, mc); 247 mlx_ccb_free(mlx, mc); 248 lddone(&sc->sc_ld, bp); 249 } 250 251 static int 252 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 253 { 254 255 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 256 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 257 } 258
Indexes created Fri Oct 03 02:09:57 GMT 2025