ld_mlx.c revision 1.22
1 /* $NetBSD: ld_mlx.c,v 1.22 2016/09/16 15:20:50 jdolecek 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 1.22 2016/09/16 15:20:50 jdolecek 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 49 #include <machine/vmparam.h> 50 #include <sys/bus.h> 51 52 #include <dev/ldvar.h> 53 54 #include <dev/ic/mlxreg.h> 55 #include <dev/ic/mlxio.h> 56 #include <dev/ic/mlxvar.h> 57 58 struct ld_mlx_softc { 59 struct ld_softc sc_ld; 60 int sc_hwunit; 61 }; 62 63 static void ld_mlx_attach(device_t, device_t, void *); 64 static int ld_mlx_detach(device_t, int); 65 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int, 66 struct buf *); 67 static int ld_mlx_dump(struct ld_softc *, void *, int, int); 68 static void ld_mlx_handler(struct mlx_ccb *); 69 static int ld_mlx_match(device_t, cfdata_t, void *); 70 static int ld_mlx_start(struct ld_softc *, struct buf *); 71 72 CFATTACH_DECL_NEW(ld_mlx, sizeof(struct ld_mlx_softc), 73 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL); 74 75 static int 76 ld_mlx_match(device_t parent, cfdata_t match, void *aux) 77 { 78 79 return (1); 80 } 81 82 static void 83 ld_mlx_attach(device_t parent, device_t self, void *aux) 84 { 85 struct mlx_attach_args *mlxa = aux; 86 struct ld_mlx_softc *sc = device_private(self); 87 struct ld_softc *ld = &sc->sc_ld; 88 struct mlx_softc *mlx = device_private(parent); 89 struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 90 const char *statestr; 91 92 ld->sc_dv = self; 93 94 sc->sc_hwunit = mlxa->mlxa_unit; 95 ld->sc_maxxfer = MLX_MAX_XFER; 96 ld->sc_secsize = MLX_SECTOR_SIZE; 97 ld->sc_maxqueuecnt = 1; 98 ld->sc_start = ld_mlx_start; 99 ld->sc_dump = ld_mlx_dump; 100 ld->sc_secperunit = ms->ms_size; 101 102 /* 103 * Report on current status, and attach to the ld driver proper. 104 */ 105 switch (ms->ms_state) { 106 case MLX_SYSD_ONLINE: 107 statestr = "online"; 108 ld->sc_flags = LDF_ENABLED; 109 break; 110 111 case MLX_SYSD_CRITICAL: 112 statestr = "critical"; 113 ld->sc_flags = LDF_ENABLED; 114 break; 115 116 case MLX_SYSD_OFFLINE: 117 statestr = "offline"; 118 break; 119 120 default: 121 statestr = "state unknown"; 122 break; 123 } 124 125 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 126 aprint_normal(": JBOD, %s\n", statestr); 127 else 128 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 129 130 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 131 } 132 133 static int 134 ld_mlx_detach(device_t dv, int flags) 135 { 136 struct ld_mlx_softc *sc = device_private(dv); 137 struct ld_softc *ld = &sc->sc_ld; 138 struct mlx_softc *mlx = device_private(device_parent(dv)); 139 int rv; 140 141 if ((rv = ldbegindetach(ld, flags)) != 0) 142 return (rv); 143 ldenddetach(ld); 144 mlx_flush(mlx, 1); 145 146 return (0); 147 } 148 149 static int 150 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 151 int dowrite, struct buf *bp) 152 { 153 struct mlx_ccb *mc; 154 struct mlx_softc *mlx; 155 int s, rv; 156 bus_addr_t sgphys; 157 158 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 159 160 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 161 return (rv); 162 163 /* Map the data transfer. */ 164 rv = mlx_ccb_map(mlx, mc, data, datasize, 165 dowrite ? MC_XFER_OUT : MC_XFER_IN); 166 if (rv != 0) { 167 mlx_ccb_free(mlx, mc); 168 return (rv); 169 } 170 171 /* Build the command. */ 172 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 173 datasize /= MLX_SECTOR_SIZE; 174 175 if (mlx->mlx_ci.ci_iftype <= 2) 176 mlx_make_type1(mc, 177 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 178 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 179 mc->mc_nsgent); 180 else 181 mlx_make_type5(mc, 182 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 183 datasize & 0xff, 184 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 185 blkno, sgphys, mc->mc_nsgent); 186 187 if (bp == NULL) { 188 s = splbio(); 189 rv = mlx_ccb_poll(mlx, mc, 10000); 190 mlx_ccb_unmap(mlx, mc); 191 mlx_ccb_free(mlx, mc); 192 splx(s); 193 } else { 194 mc->mc_mx.mx_handler = ld_mlx_handler; 195 mc->mc_mx.mx_context = bp; 196 mc->mc_mx.mx_dv = sc->sc_ld.sc_dv; 197 mlx_ccb_enqueue(mlx, mc); 198 rv = 0; 199 } 200 201 return (rv); 202 } 203 204 static int 205 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 206 { 207 208 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 209 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 210 } 211 212 static void 213 ld_mlx_handler(struct mlx_ccb *mc) 214 { 215 struct buf *bp; 216 struct mlx_context *mx; 217 struct ld_mlx_softc *sc; 218 struct mlx_softc *mlx; 219 220 mx = &mc->mc_mx; 221 bp = mx->mx_context; 222 sc = device_private(mx->mx_dv); 223 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 224 225 if (mc->mc_status != MLX_STATUS_OK) { 226 bp->b_error = EIO; 227 bp->b_resid = bp->b_bcount; 228 229 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 230 printf("%s: drive offline\n", 231 device_xname(sc->sc_ld.sc_dv)); 232 else 233 printf("%s: I/O error - %s\n", 234 device_xname(sc->sc_ld.sc_dv), 235 mlx_ccb_diagnose(mc)); 236 } else 237 bp->b_resid = 0; 238 239 mlx_ccb_unmap(mlx, mc); 240 mlx_ccb_free(mlx, mc); 241 lddone(&sc->sc_ld, bp); 242 } 243 244 static int 245 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 246 { 247 248 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 249 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 250 } 251
Indexes created Mon Sep 22 13:09:51 GMT 2025