ld_mlx.c revision 1.18
1 /* $NetBSD: ld_mlx.c,v 1.18 2008/09/09 12:45:40 tron 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 1.18 2008/09/09 12:45:40 tron 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(device_t, device_t, void *); 69 static int ld_mlx_detach(device_t, 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(device_t, cfdata_t, void *); 75 static int ld_mlx_start(struct ld_softc *, struct buf *); 76 77 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t match, void *aux) 82 { 83 84 return (1); 85 } 86 87 static void 88 ld_mlx_attach(device_t parent, device_t self, void *aux) 89 { 90 struct mlx_attach_args *mlxa = aux; 91 struct ld_mlx_softc *sc = device_private(self); 92 struct ld_softc *ld = &sc->sc_ld; 93 struct mlx_softc *mlx = device_private(parent); 94 struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 95 const char *statestr; 96 97 ld->sc_dv = self; 98 99 sc->sc_hwunit = mlxa->mlxa_unit; 100 ld->sc_maxxfer = MLX_MAX_XFER; 101 ld->sc_secsize = MLX_SECTOR_SIZE; 102 ld->sc_maxqueuecnt = 1; 103 ld->sc_start = ld_mlx_start; 104 ld->sc_dump = ld_mlx_dump; 105 ld->sc_secperunit = ms->ms_size; 106 107 /* 108 * Report on current status, and attach to the ld driver proper. 109 */ 110 switch (ms->ms_state) { 111 case MLX_SYSD_ONLINE: 112 statestr = "online"; 113 ld->sc_flags = LDF_ENABLED; 114 break; 115 116 case MLX_SYSD_CRITICAL: 117 statestr = "critical"; 118 ld->sc_flags = LDF_ENABLED; 119 break; 120 121 case MLX_SYSD_OFFLINE: 122 statestr = "offline"; 123 break; 124 125 default: 126 statestr = "state unknown"; 127 break; 128 } 129 130 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 131 aprint_normal(": JBOD, %s\n", statestr); 132 else 133 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 134 135 ldattach(ld); 136 } 137 138 static int 139 ld_mlx_detach(device_t dv, int flags) 140 { 141 struct ld_mlx_softc *sc = device_private(dv); 142 struct ld_softc *ld = &sc->sc_ld; 143 struct mlx_softc *mlx = device_private(device_parent(dv)); 144 int rv; 145 146 if ((rv = ldbegindetach(ld, flags)) != 0) 147 return (rv); 148 ldenddetach(ld); 149 mlx_flush(mlx, 1); 150 151 return (0); 152 } 153 154 static int 155 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 156 int dowrite, struct buf *bp) 157 { 158 struct mlx_ccb *mc; 159 struct mlx_softc *mlx; 160 int s, rv; 161 bus_addr_t sgphys; 162 163 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 164 165 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 166 return (rv); 167 168 /* Map the data transfer. */ 169 rv = mlx_ccb_map(mlx, mc, data, datasize, 170 dowrite ? MC_XFER_OUT : MC_XFER_IN); 171 if (rv != 0) { 172 mlx_ccb_free(mlx, mc); 173 return (rv); 174 } 175 176 /* Build the command. */ 177 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 178 datasize /= MLX_SECTOR_SIZE; 179 180 if (mlx->mlx_ci.ci_iftype <= 2) 181 mlx_make_type1(mc, 182 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 183 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 184 mc->mc_nsgent); 185 else 186 mlx_make_type5(mc, 187 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 188 datasize & 0xff, 189 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 190 blkno, sgphys, mc->mc_nsgent); 191 192 if (bp == NULL) { 193 s = splbio(); 194 rv = mlx_ccb_poll(mlx, mc, 10000); 195 mlx_ccb_unmap(mlx, mc); 196 mlx_ccb_free(mlx, mc); 197 splx(s); 198 } else { 199 mc->mc_mx.mx_handler = ld_mlx_handler; 200 mc->mc_mx.mx_context = bp; 201 mc->mc_mx.mx_dv = sc->sc_ld.sc_dv; 202 mlx_ccb_enqueue(mlx, mc); 203 rv = 0; 204 } 205 206 return (rv); 207 } 208 209 static int 210 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 211 { 212 213 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 214 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 215 } 216 217 static void 218 ld_mlx_handler(struct mlx_ccb *mc) 219 { 220 struct buf *bp; 221 struct mlx_context *mx; 222 struct ld_mlx_softc *sc; 223 struct mlx_softc *mlx; 224 225 mx = &mc->mc_mx; 226 bp = mx->mx_context; 227 sc = (struct ld_mlx_softc *)mx->mx_dv; 228 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 229 230 if (mc->mc_status != MLX_STATUS_OK) { 231 bp->b_error = EIO; 232 bp->b_resid = bp->b_bcount; 233 234 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 235 printf("%s: drive offline\n", 236 device_xname(sc->sc_ld.sc_dv)); 237 else 238 printf("%s: I/O error - %s\n", 239 device_xname(sc->sc_ld.sc_dv), 240 mlx_ccb_diagnose(mc)); 241 } else 242 bp->b_resid = 0; 243 244 mlx_ccb_unmap(mlx, mc); 245 mlx_ccb_free(mlx, mc); 246 lddone(&sc->sc_ld, bp); 247 } 248 249 static int 250 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 251 { 252 253 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 254 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 255 } 256
Indexes created Wed Sep 24 05:09:52 GMT 2025