| 1 | /* $NetBSD: ld_mlx.c,v 1.23 2016/09/27 03:33:32 pgoyette 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 1.23 2016/09/27 03:33:32 pgoyette 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 *, int, 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, int blkno, int blkcnt) |
| 248 | { |
| 249 | |
| 250 | return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data, |
| 251 | blkcnt * ld->sc_secsize, blkno, 1, NULL)); |
| 252 | } |
| 253 | |
| 254 | MODULE(MODULE_CLASS_DRIVER, ld_mlx, "ld" ); |
| 255 | |
| 256 | #ifdef _MODULE |
| 257 | /* |
| 258 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
| 259 | * XXX it will be defined in the common-code module |
| 260 | */ |
| 261 | #undef CFDRIVER_DECL |
| 262 | #define CFDRIVER_DECL(name, class, attr) |
| 263 | #include "ioconf.c" |
| 264 | #endif |
| 265 | |
| 266 | static int |
| 267 | ld_mlx_modcmd(modcmd_t cmd, void *opaque) |
| 268 | { |
| 269 | #ifdef _MODULE |
| 270 | /* |
| 271 | * We ignore the cfdriver_vec[] that ioconf provides, since |
| 272 | * the cfdrivers are attached already. |
| 273 | */ |
| 274 | static struct cfdriver * const no_cfdriver_vec[] = { NULL }; |
| 275 | #endif |
| 276 | int error = 0; |
| 277 | |
| 278 | #ifdef _MODULE |
| 279 | switch (cmd) { |
| 280 | case MODULE_CMD_INIT: |
| 281 | error = config_init_component(no_cfdriver_vec, |
| 282 | cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx); |
| 283 | break; |
| 284 | case MODULE_CMD_FINI: |
| 285 | error = config_fini_component(no_cfdriver_vec, |
| 286 | cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx); |
| 287 | break; |
| 288 | default: |
| 289 | error = ENOTTY; |
| 290 | break; |
| 291 | } |
| 292 | #endif |
| 293 | |
| 294 | return error; |
| 295 | } |
| 296 | |