ld_mlx.c revision 1.19.18.1
1 /* $NetBSD: ld_mlx.c,v 1.19.18.1 2012/02/18 07:34:21 mrg 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 1.19.18.1 2012/02/18 07:34:21 mrg Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/buf.h> 44 #include <sys/bufq.h> 45 #include <sys/endian.h> 46 #include <sys/dkio.h> 47 #include <sys/disk.h> 48 #include <sys/rnd.h> 49 50 #include <machine/vmparam.h> 51 #include <sys/bus.h> 52 53 #include <dev/ldvar.h> 54 55 #include <dev/ic/mlxreg.h> 56 #include <dev/ic/mlxio.h> 57 #include <dev/ic/mlxvar.h> 58 59 struct ld_mlx_softc { 60 struct ld_softc sc_ld; 61 int sc_hwunit; 62 }; 63 64 static void ld_mlx_attach(device_t, device_t, void *); 65 static int ld_mlx_detach(device_t, int); 66 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int, 67 struct buf *); 68 static int ld_mlx_dump(struct ld_softc *, void *, int, int); 69 static void ld_mlx_handler(struct mlx_ccb *); 70 static int ld_mlx_match(device_t, cfdata_t, void *); 71 static int ld_mlx_start(struct ld_softc *, struct buf *); 72 73 CFATTACH_DECL_NEW(ld_mlx, sizeof(struct ld_mlx_softc), 74 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL); 75 76 static int 77 ld_mlx_match(device_t parent, cfdata_t match, void *aux) 78 { 79 80 return (1); 81 } 82 83 static void 84 ld_mlx_attach(device_t parent, device_t self, void *aux) 85 { 86 struct mlx_attach_args *mlxa = aux; 87 struct ld_mlx_softc *sc = device_private(self); 88 struct ld_softc *ld = &sc->sc_ld; 89 struct mlx_softc *mlx = device_private(parent); 90 struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 91 const char *statestr; 92 93 ld->sc_dv = self; 94 95 sc->sc_hwunit = mlxa->mlxa_unit; 96 ld->sc_maxxfer = MLX_MAX_XFER; 97 ld->sc_secsize = MLX_SECTOR_SIZE; 98 ld->sc_maxqueuecnt = 1; 99 ld->sc_start = ld_mlx_start; 100 ld->sc_dump = ld_mlx_dump; 101 ld->sc_secperunit = ms->ms_size; 102 103 /* 104 * Report on current status, and attach to the ld driver proper. 105 */ 106 switch (ms->ms_state) { 107 case MLX_SYSD_ONLINE: 108 statestr = "online"; 109 ld->sc_flags = LDF_ENABLED; 110 break; 111 112 case MLX_SYSD_CRITICAL: 113 statestr = "critical"; 114 ld->sc_flags = LDF_ENABLED; 115 break; 116 117 case MLX_SYSD_OFFLINE: 118 statestr = "offline"; 119 break; 120 121 default: 122 statestr = "state unknown"; 123 break; 124 } 125 126 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 127 aprint_normal(": JBOD, %s\n", statestr); 128 else 129 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 130 131 ldattach(ld); 132 } 133 134 static int 135 ld_mlx_detach(device_t dv, int flags) 136 { 137 struct ld_mlx_softc *sc = device_private(dv); 138 struct ld_softc *ld = &sc->sc_ld; 139 struct mlx_softc *mlx = device_private(device_parent(dv)); 140 int rv; 141 142 if ((rv = ldbegindetach(ld, flags)) != 0) 143 return (rv); 144 ldenddetach(ld); 145 mlx_flush(mlx, 1); 146 147 return (0); 148 } 149 150 static int 151 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 152 int dowrite, struct buf *bp) 153 { 154 struct mlx_ccb *mc; 155 struct mlx_softc *mlx; 156 int s, rv; 157 bus_addr_t sgphys; 158 159 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 160 161 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 162 return (rv); 163 164 /* Map the data transfer. */ 165 rv = mlx_ccb_map(mlx, mc, data, datasize, 166 dowrite ? MC_XFER_OUT : MC_XFER_IN); 167 if (rv != 0) { 168 mlx_ccb_free(mlx, mc); 169 return (rv); 170 } 171 172 /* Build the command. */ 173 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 174 datasize /= MLX_SECTOR_SIZE; 175 176 if (mlx->mlx_ci.ci_iftype <= 2) 177 mlx_make_type1(mc, 178 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 179 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 180 mc->mc_nsgent); 181 else 182 mlx_make_type5(mc, 183 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 184 datasize & 0xff, 185 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 186 blkno, sgphys, mc->mc_nsgent); 187 188 if (bp == NULL) { 189 s = splbio(); 190 rv = mlx_ccb_poll(mlx, mc, 10000); 191 mlx_ccb_unmap(mlx, mc); 192 mlx_ccb_free(mlx, mc); 193 splx(s); 194 } else { 195 mc->mc_mx.mx_handler = ld_mlx_handler; 196 mc->mc_mx.mx_context = bp; 197 mc->mc_mx.mx_dv = sc->sc_ld.sc_dv; 198 mlx_ccb_enqueue(mlx, mc); 199 rv = 0; 200 } 201 202 return (rv); 203 } 204 205 static int 206 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 207 { 208 209 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 210 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 211 } 212 213 static void 214 ld_mlx_handler(struct mlx_ccb *mc) 215 { 216 struct buf *bp; 217 struct mlx_context *mx; 218 struct ld_mlx_softc *sc; 219 struct mlx_softc *mlx; 220 221 mx = &mc->mc_mx; 222 bp = mx->mx_context; 223 sc = device_private(mx->mx_dv); 224 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 225 226 if (mc->mc_status != MLX_STATUS_OK) { 227 bp->b_error = EIO; 228 bp->b_resid = bp->b_bcount; 229 230 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 231 printf("%s: drive offline\n", 232 device_xname(sc->sc_ld.sc_dv)); 233 else 234 printf("%s: I/O error - %s\n", 235 device_xname(sc->sc_ld.sc_dv), 236 mlx_ccb_diagnose(mc)); 237 } else 238 bp->b_resid = 0; 239 240 mlx_ccb_unmap(mlx, mc); 241 mlx_ccb_free(mlx, mc); 242 lddone(&sc->sc_ld, bp); 243 } 244 245 static int 246 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 247 { 248 249 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 250 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 251 } 252
Indexes created Fri Oct 03 02:09:57 GMT 2025