1 /* $NetBSD: ld_mlx.c,v 1.24 2025/04/13 02:34:03 rin 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 1.24 2025/04/13 02:34:03 rin 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/module.h> 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 #include "ioconf.h" 59 60 struct ld_mlx_softc { 61 struct ld_softc sc_ld; 62 int sc_hwunit; 63 }; 64 65 static void ld_mlx_attach(device_t, device_t, void *); 66 static int ld_mlx_detach(device_t, int); 67 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int, 68 struct buf *); 69 static int ld_mlx_dump(struct ld_softc *, void *, daddr_t, int); 70 static void ld_mlx_handler(struct mlx_ccb *); 71 static int ld_mlx_match(device_t, cfdata_t, void *); 72 static int ld_mlx_start(struct ld_softc *, struct buf *); 73 74 CFATTACH_DECL_NEW(ld_mlx, sizeof(struct ld_mlx_softc), 75 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL); 76 77 static int 78 ld_mlx_match(device_t parent, cfdata_t match, void *aux) 79 { 80 81 return (1); 82 } 83 84 static void 85 ld_mlx_attach(device_t parent, device_t self, void *aux) 86 { 87 struct mlx_attach_args *mlxa = aux; 88 struct ld_mlx_softc *sc = device_private(self); 89 struct ld_softc *ld = &sc->sc_ld; 90 struct mlx_softc *mlx = device_private(parent); 91 struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit]; 92 const char *statestr; 93 94 ld->sc_dv = self; 95 96 sc->sc_hwunit = mlxa->mlxa_unit; 97 ld->sc_maxxfer = MLX_MAX_XFER; 98 ld->sc_secsize = MLX_SECTOR_SIZE; 99 ld->sc_maxqueuecnt = 1; 100 ld->sc_start = ld_mlx_start; 101 ld->sc_dump = ld_mlx_dump; 102 ld->sc_secperunit = ms->ms_size; 103 104 /* 105 * Report on current status, and attach to the ld driver proper. 106 */ 107 switch (ms->ms_state) { 108 case MLX_SYSD_ONLINE: 109 statestr = "online"; 110 ld->sc_flags = LDF_ENABLED; 111 break; 112 113 case MLX_SYSD_CRITICAL: 114 statestr = "critical"; 115 ld->sc_flags = LDF_ENABLED; 116 break; 117 118 case MLX_SYSD_OFFLINE: 119 statestr = "offline"; 120 break; 121 122 default: 123 statestr = "state unknown"; 124 break; 125 } 126 127 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD) 128 aprint_normal(": JBOD, %s\n", statestr); 129 else 130 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr); 131 132 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 133 } 134 135 static int 136 ld_mlx_detach(device_t dv, int flags) 137 { 138 struct ld_mlx_softc *sc = device_private(dv); 139 struct ld_softc *ld = &sc->sc_ld; 140 struct mlx_softc *mlx = device_private(device_parent(dv)); 141 int rv; 142 143 if ((rv = ldbegindetach(ld, flags)) != 0) 144 return (rv); 145 ldenddetach(ld); 146 mlx_flush(mlx, 1); 147 148 return (0); 149 } 150 151 static int 152 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno, 153 int dowrite, struct buf *bp) 154 { 155 struct mlx_ccb *mc; 156 struct mlx_softc *mlx; 157 int s, rv; 158 bus_addr_t sgphys; 159 160 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 161 162 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0) 163 return (rv); 164 165 /* Map the data transfer. */ 166 rv = mlx_ccb_map(mlx, mc, data, datasize, 167 dowrite ? MC_XFER_OUT : MC_XFER_IN); 168 if (rv != 0) { 169 mlx_ccb_free(mlx, mc); 170 return (rv); 171 } 172 173 /* Build the command. */ 174 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident); 175 datasize /= MLX_SECTOR_SIZE; 176 177 if (mlx->mlx_ci.ci_iftype <= 2) 178 mlx_make_type1(mc, 179 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD, 180 datasize & 0xff, blkno, sc->sc_hwunit, sgphys, 181 mc->mc_nsgent); 182 else 183 mlx_make_type5(mc, 184 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG, 185 datasize & 0xff, 186 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07), 187 blkno, sgphys, mc->mc_nsgent); 188 189 if (bp == NULL) { 190 s = splbio(); 191 rv = mlx_ccb_poll(mlx, mc, 10000); 192 mlx_ccb_unmap(mlx, mc); 193 mlx_ccb_free(mlx, mc); 194 splx(s); 195 } else { 196 mc->mc_mx.mx_handler = ld_mlx_handler; 197 mc->mc_mx.mx_context = bp; 198 mc->mc_mx.mx_dv = sc->sc_ld.sc_dv; 199 mlx_ccb_enqueue(mlx, mc); 200 rv = 0; 201 } 202 203 return (rv); 204 } 205 206 static int 207 ld_mlx_start(struct ld_softc *ld, struct buf *bp) 208 { 209 210 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data, 211 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 212 } 213 214 static void 215 ld_mlx_handler(struct mlx_ccb *mc) 216 { 217 struct buf *bp; 218 struct mlx_context *mx; 219 struct ld_mlx_softc *sc; 220 struct mlx_softc *mlx; 221 222 mx = &mc->mc_mx; 223 bp = mx->mx_context; 224 sc = device_private(mx->mx_dv); 225 mlx = device_private(device_parent(sc->sc_ld.sc_dv)); 226 227 if (mc->mc_status != MLX_STATUS_OK) { 228 bp->b_error = EIO; 229 bp->b_resid = bp->b_bcount; 230 231 if (mc->mc_status == MLX_STATUS_RDWROFFLINE) 232 printf("%s: drive offline\n", 233 device_xname(sc->sc_ld.sc_dv)); 234 else 235 printf("%s: I/O error - %s\n", 236 device_xname(sc->sc_ld.sc_dv), 237 mlx_ccb_diagnose(mc)); 238 } else 239 bp->b_resid = 0; 240 241 mlx_ccb_unmap(mlx, mc); 242 mlx_ccb_free(mlx, mc); 243 lddone(&sc->sc_ld, bp); 244 } 245 246 static int 247 ld_mlx_dump(struct ld_softc *ld, void *data, daddr_t blkno, int blkcnt) 248 { 249 250 /* ld_mlx_dobio() takes only an 'int' as a disk address */ 251 if (blkno + blkcnt - 1 > INT_MAX) 252 return (EIO); 253 254 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, 255 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 256 } 257 258 MODULE(MODULE_CLASS_DRIVER, ld_mlx, "ld"); 259 260 #ifdef _MODULE 261 /* 262 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" 263 * XXX it will be defined in the common-code module 264 */ 265 #undef CFDRIVER_DECL 266 #define CFDRIVER_DECL(name, class, attr) 267 #include "ioconf.c" 268 #endif 269 270 static int 271 ld_mlx_modcmd(modcmd_t cmd, void *opaque) 272 { 273 #ifdef _MODULE 274 /* 275 * We ignore the cfdriver_vec[] that ioconf provides, since 276 * the cfdrivers are attached already. 277 */ 278 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 279 #endif 280 int error = 0; 281 282 #ifdef _MODULE 283 switch (cmd) { 284 case MODULE_CMD_INIT: 285 error = config_init_component(no_cfdriver_vec, 286 cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx); 287 break; 288 case MODULE_CMD_FINI: 289 error = config_fini_component(no_cfdriver_vec, 290 cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx); 291 break; 292 default: 293 error = ENOTTY; 294 break; 295 } 296 #endif 297 298 return error; 299 } 300
Indexes created Sat Sep 20 22:09:52 GMT 2025