1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 devclass_t mlxd_devclass; 64 65 static device_method_t mlxd_methods[] = { 66 DEVMETHOD(device_probe, mlxd_probe), 67 DEVMETHOD(device_attach, mlxd_attach), 68 DEVMETHOD(device_detach, mlxd_detach), 69 { 0, 0 } 70 }; 71 72 static driver_t mlxd_driver = { 73 "mlxd", 74 mlxd_methods, 75 sizeof(struct mlxd_softc) 76 }; 77 78 DRIVER_MODULE(mlxd, mlx, mlxd_driver, mlxd_devclass, 0, 0); 79 80 static int 81 mlxd_open(struct disk *dp) 82 { 83 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 84 85 debug_called(1); 86 87 if (sc == NULL) 88 return (ENXIO); 89 90 /* controller not active? */ 91 MLX_CONFIG_LOCK(sc->mlxd_controller); 92 MLX_IO_LOCK(sc->mlxd_controller); 93 if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) { 94 MLX_IO_UNLOCK(sc->mlxd_controller); 95 MLX_CONFIG_UNLOCK(sc->mlxd_controller); 96 return(ENXIO); 97 } 98 99 sc->mlxd_flags |= MLXD_OPEN; 100 MLX_IO_UNLOCK(sc->mlxd_controller); 101 MLX_CONFIG_UNLOCK(sc->mlxd_controller); 102 return (0); 103 } 104 105 static int 106 mlxd_close(struct disk *dp) 107 { 108 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 109 110 debug_called(1); 111 112 if (sc == NULL) 113 return (ENXIO); 114 MLX_CONFIG_LOCK(sc->mlxd_controller); 115 MLX_IO_LOCK(sc->mlxd_controller); 116 sc->mlxd_flags &= ~MLXD_OPEN; 117 MLX_IO_UNLOCK(sc->mlxd_controller); 118 MLX_CONFIG_UNLOCK(sc->mlxd_controller); 119 return (0); 120 } 121 122 static int 123 mlxd_ioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td) 124 { 125 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 126 int error; 127 128 debug_called(1); 129 130 if (sc == NULL) 131 return (ENXIO); 132 133 if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) { 134 debug(0, "mlx_submit_ioctl returned %d\n", error); 135 return(error); 136 } 137 return (ENOTTY); 138 } 139 140 /* 141 * Read/write routine for a buffer. Finds the proper unit, range checks 142 * arguments, and schedules the transfer. Does not wait for the transfer 143 * to complete. Multi-page transfers are supported. All I/O requests must 144 * be a multiple of a sector in length. 145 */ 146 static void 147 mlxd_strategy(struct bio *bp) 148 { 149 struct mlxd_softc *sc = bp->bio_disk->d_drv1; 150 151 debug_called(1); 152 153 /* bogus disk? */ 154 if (sc == NULL) { 155 bp->bio_error = EINVAL; 156 bp->bio_flags |= BIO_ERROR; 157 goto bad; 158 } 159 160 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) { 161 bp->bio_error = EOPNOTSUPP; 162 goto bad; 163 } 164 165 /* XXX may only be temporarily offline - sleep? */ 166 MLX_IO_LOCK(sc->mlxd_controller); 167 if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) { 168 MLX_IO_UNLOCK(sc->mlxd_controller); 169 bp->bio_error = ENXIO; 170 bp->bio_flags |= BIO_ERROR; 171 goto bad; 172 } 173 174 mlx_submit_buf(sc->mlxd_controller, bp); 175 MLX_IO_UNLOCK(sc->mlxd_controller); 176 return; 177 178 bad: 179 /* 180 * Correctly set the bio to indicate a failed transfer. 181 */ 182 bp->bio_resid = bp->bio_bcount; 183 biodone(bp); 184 return; 185 } 186 187 void 188 mlxd_intr(struct bio *bp) 189 { 190 191 debug_called(1); 192 193 if (bp->bio_flags & BIO_ERROR) 194 bp->bio_error = EIO; 195 else 196 bp->bio_resid = 0; 197 198 biodone(bp); 199 } 200 201 static int 202 mlxd_probe(device_t dev) 203 { 204 205 debug_called(1); 206 207 device_set_desc(dev, "Mylex System Drive"); 208 return (0); 209 } 210 211 static int 212 mlxd_attach(device_t dev) 213 { 214 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 215 device_t parent; 216 char *state; 217 int s1, s2; 218 219 debug_called(1); 220 221 parent = device_get_parent(dev); 222 sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent); 223 sc->mlxd_unit = device_get_unit(dev); 224 sc->mlxd_drive = device_get_ivars(dev); 225 sc->mlxd_dev = dev; 226 227 switch(sc->mlxd_drive->ms_state) { 228 case MLX_SYSD_ONLINE: 229 state = "online"; 230 break; 231 case MLX_SYSD_CRITICAL: 232 state = "critical"; 233 break; 234 case MLX_SYSD_OFFLINE: 235 state = "offline"; 236 break; 237 default: 238 state = "unknown state"; 239 } 240 241 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 242 sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE), 243 sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state); 244 245 sc->mlxd_disk = disk_alloc(); 246 sc->mlxd_disk->d_open = mlxd_open; 247 sc->mlxd_disk->d_close = mlxd_close; 248 sc->mlxd_disk->d_ioctl = mlxd_ioctl; 249 sc->mlxd_disk->d_strategy = mlxd_strategy; 250 sc->mlxd_disk->d_name = "mlxd"; 251 sc->mlxd_disk->d_unit = sc->mlxd_unit; 252 sc->mlxd_disk->d_drv1 = sc; 253 sc->mlxd_disk->d_sectorsize = MLX_BLKSIZE; 254 sc->mlxd_disk->d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size; 255 sc->mlxd_disk->d_fwsectors = sc->mlxd_drive->ms_sectors; 256 sc->mlxd_disk->d_fwheads = sc->mlxd_drive->ms_heads; 257 258 /* 259 * Set maximum I/O size to the lesser of the recommended maximum and the practical 260 * maximum except on v2 cards where the maximum is set to 8 pages. 261 */ 262 if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2) 263 sc->mlxd_disk->d_maxsize = 8 * MLX_PAGE_SIZE; 264 else { 265 s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE; 266 s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * MLX_PAGE_SIZE; 267 sc->mlxd_disk->d_maxsize = imin(s1, s2); 268 } 269 270 disk_create(sc->mlxd_disk, DISK_VERSION); 271 272 return (0); 273 } 274 275 static int 276 mlxd_detach(device_t dev) 277 { 278 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 279 280 debug_called(1); 281 282 disk_destroy(sc->mlxd_disk); 283 284 return(0); 285 } 286 287