1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1999 Jonathan Lemon 5 * Copyright (c) 1999 Michael Smith 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 /* 35 * Disk driver for Mylex DAC960 RAID adapters. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/bio.h> 41 #include <sys/kernel.h> 42 #include <sys/lock.h> 43 #include <sys/module.h> 44 #include <sys/sx.h> 45 46 #include <sys/bus.h> 47 #include <sys/conf.h> 48 49 #include <machine/bus.h> 50 #include <sys/rman.h> 51 52 #include <geom/geom_disk.h> 53 54 #include <dev/mlx/mlxio.h> 55 #include <dev/mlx/mlxvar.h> 56 #include <dev/mlx/mlxreg.h> 57 58 /* prototypes */ 59 static int mlxd_probe(device_t dev); 60 static int mlxd_attach(device_t dev); 61 static int mlxd_detach(device_t dev); 62 63 static device_method_t mlxd_methods[] = { 64 DEVMETHOD(device_probe, mlxd_probe), 65 DEVMETHOD(device_attach, mlxd_attach), 66 DEVMETHOD(device_detach, mlxd_detach), 67 { 0, 0 } 68 }; 69 70 static driver_t mlxd_driver = { 71 "mlxd", 72 mlxd_methods, 73 sizeof(struct mlxd_softc) 74 }; 75 76 DRIVER_MODULE(mlxd, mlx, mlxd_driver, 0, 0); 77 78 static int 79 mlxd_open(struct disk *dp) 80 { 81 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 82 83 debug_called(1); 84 85 if (sc == NULL) 86 return (ENXIO); 87 88 /* controller not active? */ 89 MLX_CONFIG_LOCK(sc->mlxd_controller); 90 MLX_IO_LOCK(sc->mlxd_controller); 91 if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) { 92 MLX_IO_UNLOCK(sc->mlxd_controller); 93 MLX_CONFIG_UNLOCK(sc->mlxd_controller); 94 return(ENXIO); 95 } 96 97 sc->mlxd_flags |= MLXD_OPEN; 98 MLX_IO_UNLOCK(sc->mlxd_controller); 99 MLX_CONFIG_UNLOCK(sc->mlxd_controller); 100 return (0); 101 } 102 103 static int 104 mlxd_close(struct disk *dp) 105 { 106 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 107 108 debug_called(1); 109 110 if (sc == NULL) 111 return (ENXIO); 112 MLX_CONFIG_LOCK(sc->mlxd_controller); 113 MLX_IO_LOCK(sc->mlxd_controller); 114 sc->mlxd_flags &= ~MLXD_OPEN; 115 MLX_IO_UNLOCK(sc->mlxd_controller); 116 MLX_CONFIG_UNLOCK(sc->mlxd_controller); 117 return (0); 118 } 119 120 static int 121 mlxd_ioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td) 122 { 123 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 124 int error; 125 126 debug_called(1); 127 128 if (sc == NULL) 129 return (ENXIO); 130 131 if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) { 132 debug(0, "mlx_submit_ioctl returned %d\n", error); 133 return(error); 134 } 135 return (ENOTTY); 136 } 137 138 /* 139 * Read/write routine for a buffer. Finds the proper unit, range checks 140 * arguments, and schedules the transfer. Does not wait for the transfer 141 * to complete. Multi-page transfers are supported. All I/O requests must 142 * be a multiple of a sector in length. 143 */ 144 static void 145 mlxd_strategy(struct bio *bp) 146 { 147 struct mlxd_softc *sc = bp->bio_disk->d_drv1; 148 149 debug_called(1); 150 151 /* bogus disk? */ 152 if (sc == NULL) { 153 bp->bio_error = EINVAL; 154 bp->bio_flags |= BIO_ERROR; 155 goto bad; 156 } 157 158 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) { 159 bp->bio_error = EOPNOTSUPP; 160 goto bad; 161 } 162 163 /* XXX may only be temporarily offline - sleep? */ 164 MLX_IO_LOCK(sc->mlxd_controller); 165 if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) { 166 MLX_IO_UNLOCK(sc->mlxd_controller); 167 bp->bio_error = ENXIO; 168 bp->bio_flags |= BIO_ERROR; 169 goto bad; 170 } 171 172 mlx_submit_buf(sc->mlxd_controller, bp); 173 MLX_IO_UNLOCK(sc->mlxd_controller); 174 return; 175 176 bad: 177 /* 178 * Correctly set the bio to indicate a failed transfer. 179 */ 180 bp->bio_resid = bp->bio_bcount; 181 biodone(bp); 182 return; 183 } 184 185 void 186 mlxd_intr(struct bio *bp) 187 { 188 189 debug_called(1); 190 191 if (bp->bio_flags & BIO_ERROR) 192 bp->bio_error = EIO; 193 else 194 bp->bio_resid = 0; 195 196 biodone(bp); 197 } 198 199 static int 200 mlxd_probe(device_t dev) 201 { 202 203 debug_called(1); 204 205 device_set_desc(dev, "Mylex System Drive"); 206 return (0); 207 } 208 209 static int 210 mlxd_attach(device_t dev) 211 { 212 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 213 device_t parent; 214 char *state; 215 int s1, s2; 216 217 debug_called(1); 218 219 parent = device_get_parent(dev); 220 sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent); 221 sc->mlxd_unit = device_get_unit(dev); 222 sc->mlxd_drive = device_get_ivars(dev); 223 sc->mlxd_dev = dev; 224 225 switch(sc->mlxd_drive->ms_state) { 226 case MLX_SYSD_ONLINE: 227 state = "online"; 228 break; 229 case MLX_SYSD_CRITICAL: 230 state = "critical"; 231 break; 232 case MLX_SYSD_OFFLINE: 233 state = "offline"; 234 break; 235 default: 236 state = "unknown state"; 237 } 238 239 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 240 sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE), 241 sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state); 242 243 sc->mlxd_disk = disk_alloc(); 244 sc->mlxd_disk->d_open = mlxd_open; 245 sc->mlxd_disk->d_close = mlxd_close; 246 sc->mlxd_disk->d_ioctl = mlxd_ioctl; 247 sc->mlxd_disk->d_strategy = mlxd_strategy; 248 sc->mlxd_disk->d_name = "mlxd"; 249 sc->mlxd_disk->d_unit = sc->mlxd_unit; 250 sc->mlxd_disk->d_drv1 = sc; 251 sc->mlxd_disk->d_sectorsize = MLX_BLKSIZE; 252 sc->mlxd_disk->d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size; 253 sc->mlxd_disk->d_fwsectors = sc->mlxd_drive->ms_sectors; 254 sc->mlxd_disk->d_fwheads = sc->mlxd_drive->ms_heads; 255 256 /* 257 * Set maximum I/O size to the lesser of the recommended maximum and the practical 258 * maximum except on v2 cards where the maximum is set to 8 pages. 259 */ 260 if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2) 261 sc->mlxd_disk->d_maxsize = 8 * MLX_PAGE_SIZE; 262 else { 263 s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE; 264 s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * MLX_PAGE_SIZE; 265 sc->mlxd_disk->d_maxsize = imin(s1, s2); 266 } 267 268 disk_create(sc->mlxd_disk, DISK_VERSION); 269 270 return (0); 271 } 272 273 static int 274 mlxd_detach(device_t dev) 275 { 276 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 277 278 debug_called(1); 279 280 disk_destroy(sc->mlxd_disk); 281 282 return(0); 283 } 284 285