1 /*- 2 * Copyright (c) 1999 Jonathan Lemon 3 * Copyright (c) 1999 Michael Smith 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 /* 33 * Disk driver for Mylex DAC960 RAID adapters. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/bio.h> 39 #include <sys/kernel.h> 40 #include <sys/lock.h> 41 #include <sys/module.h> 42 #include <sys/sx.h> 43 44 #include <sys/bus.h> 45 #include <sys/conf.h> 46 47 #include <machine/bus.h> 48 #include <sys/rman.h> 49 50 #include <geom/geom_disk.h> 51 52 #include <dev/mlx/mlxio.h> 53 #include <dev/mlx/mlxvar.h> 54 #include <dev/mlx/mlxreg.h> 55 56 /* prototypes */ 57 static int mlxd_probe(device_t dev); 58 static int mlxd_attach(device_t dev); 59 static int mlxd_detach(device_t dev); 60 61 devclass_t mlxd_devclass; 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, mlxd_devclass, 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 /* XXX may only be temporarily offline - sleep? */ 159 MLX_IO_LOCK(sc->mlxd_controller); 160 if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) { 161 MLX_IO_UNLOCK(sc->mlxd_controller); 162 bp->bio_error = ENXIO; 163 bp->bio_flags |= BIO_ERROR; 164 goto bad; 165 } 166 167 mlx_submit_buf(sc->mlxd_controller, bp); 168 MLX_IO_UNLOCK(sc->mlxd_controller); 169 return; 170 171 bad: 172 /* 173 * Correctly set the bio to indicate a failed transfer. 174 */ 175 bp->bio_resid = bp->bio_bcount; 176 biodone(bp); 177 return; 178 } 179 180 void 181 mlxd_intr(struct bio *bp) 182 { 183 184 debug_called(1); 185 186 if (bp->bio_flags & BIO_ERROR) 187 bp->bio_error = EIO; 188 else 189 bp->bio_resid = 0; 190 191 biodone(bp); 192 } 193 194 static int 195 mlxd_probe(device_t dev) 196 { 197 198 debug_called(1); 199 200 device_set_desc(dev, "Mylex System Drive"); 201 return (0); 202 } 203 204 static int 205 mlxd_attach(device_t dev) 206 { 207 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 208 device_t parent; 209 char *state; 210 int s1, s2; 211 212 debug_called(1); 213 214 parent = device_get_parent(dev); 215 sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent); 216 sc->mlxd_unit = device_get_unit(dev); 217 sc->mlxd_drive = device_get_ivars(dev); 218 sc->mlxd_dev = dev; 219 220 switch(sc->mlxd_drive->ms_state) { 221 case MLX_SYSD_ONLINE: 222 state = "online"; 223 break; 224 case MLX_SYSD_CRITICAL: 225 state = "critical"; 226 break; 227 case MLX_SYSD_OFFLINE: 228 state = "offline"; 229 break; 230 default: 231 state = "unknown state"; 232 } 233 234 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 235 sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE), 236 sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state); 237 238 sc->mlxd_disk = disk_alloc(); 239 sc->mlxd_disk->d_open = mlxd_open; 240 sc->mlxd_disk->d_close = mlxd_close; 241 sc->mlxd_disk->d_ioctl = mlxd_ioctl; 242 sc->mlxd_disk->d_strategy = mlxd_strategy; 243 sc->mlxd_disk->d_name = "mlxd"; 244 sc->mlxd_disk->d_unit = sc->mlxd_unit; 245 sc->mlxd_disk->d_drv1 = sc; 246 sc->mlxd_disk->d_sectorsize = MLX_BLKSIZE; 247 sc->mlxd_disk->d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size; 248 sc->mlxd_disk->d_fwsectors = sc->mlxd_drive->ms_sectors; 249 sc->mlxd_disk->d_fwheads = sc->mlxd_drive->ms_heads; 250 251 /* 252 * Set maximum I/O size to the lesser of the recommended maximum and the practical 253 * maximum except on v2 cards where the maximum is set to 8 pages. 254 */ 255 if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2) 256 sc->mlxd_disk->d_maxsize = 8 * MLX_PAGE_SIZE; 257 else { 258 s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE; 259 s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * MLX_PAGE_SIZE; 260 sc->mlxd_disk->d_maxsize = imin(s1, s2); 261 } 262 263 disk_create(sc->mlxd_disk, DISK_VERSION); 264 265 return (0); 266 } 267 268 static int 269 mlxd_detach(device_t dev) 270 { 271 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 272 273 debug_called(1); 274 275 disk_destroy(sc->mlxd_disk); 276 277 return(0); 278 } 279 280