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/kernel.h> 39 #include <sys/module.h> 40 41 #include <sys/bus.h> 42 #include <sys/conf.h> 43 44 #include <machine/bus.h> 45 #include <sys/rman.h> 46 47 #include <geom/geom_disk.h> 48 49 #include <dev/mlx/mlx_compat.h> 50 #include <dev/mlx/mlxio.h> 51 #include <dev/mlx/mlxvar.h> 52 #include <dev/mlx/mlxreg.h> 53 54 /* prototypes */ 55 static int mlxd_probe(device_t dev); 56 static int mlxd_attach(device_t dev); 57 static int mlxd_detach(device_t dev); 58 59 devclass_t mlxd_devclass; 60 61 static device_method_t mlxd_methods[] = { 62 DEVMETHOD(device_probe, mlxd_probe), 63 DEVMETHOD(device_attach, mlxd_attach), 64 DEVMETHOD(device_detach, mlxd_detach), 65 { 0, 0 } 66 }; 67 68 static driver_t mlxd_driver = { 69 "mlxd", 70 mlxd_methods, 71 sizeof(struct mlxd_softc) 72 }; 73 74 DRIVER_MODULE(mlxd, mlx, mlxd_driver, mlxd_devclass, 0, 0); 75 76 static int 77 mlxd_open(struct disk *dp) 78 { 79 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 80 81 debug_called(1); 82 83 if (sc == NULL) 84 return (ENXIO); 85 86 /* controller not active? */ 87 if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) 88 return(ENXIO); 89 90 sc->mlxd_flags |= MLXD_OPEN; 91 return (0); 92 } 93 94 static int 95 mlxd_close(struct disk *dp) 96 { 97 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 98 99 debug_called(1); 100 101 if (sc == NULL) 102 return (ENXIO); 103 sc->mlxd_flags &= ~MLXD_OPEN; 104 return (0); 105 } 106 107 static int 108 mlxd_ioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td) 109 { 110 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 111 int error; 112 113 debug_called(1); 114 115 if (sc == NULL) 116 return (ENXIO); 117 118 if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) { 119 debug(0, "mlx_submit_ioctl returned %d\n", error); 120 return(error); 121 } 122 return (ENOTTY); 123 } 124 125 /* 126 * Read/write routine for a buffer. Finds the proper unit, range checks 127 * arguments, and schedules the transfer. Does not wait for the transfer 128 * to complete. Multi-page transfers are supported. All I/O requests must 129 * be a multiple of a sector in length. 130 */ 131 static void 132 mlxd_strategy(mlx_bio *bp) 133 { 134 struct mlxd_softc *sc = (struct mlxd_softc *)MLX_BIO_SOFTC(bp); 135 136 debug_called(1); 137 138 /* bogus disk? */ 139 if (sc == NULL) { 140 MLX_BIO_SET_ERROR(bp, EINVAL); 141 goto bad; 142 } 143 144 /* XXX may only be temporarily offline - sleep? */ 145 if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) { 146 MLX_BIO_SET_ERROR(bp, ENXIO); 147 goto bad; 148 } 149 150 MLX_BIO_STATS_START(bp); 151 mlx_submit_buf(sc->mlxd_controller, bp); 152 return; 153 154 bad: 155 /* 156 * Correctly set the bio to indicate a failed tranfer. 157 */ 158 MLX_BIO_RESID(bp) = MLX_BIO_LENGTH(bp); 159 MLX_BIO_DONE(bp); 160 return; 161 } 162 163 void 164 mlxd_intr(void *data) 165 { 166 mlx_bio *bp = (mlx_bio *)data; 167 168 debug_called(1); 169 170 if (MLX_BIO_HAS_ERROR(bp)) 171 MLX_BIO_SET_ERROR(bp, EIO); 172 else 173 MLX_BIO_RESID(bp) = 0; 174 175 MLX_BIO_STATS_END(bp); 176 MLX_BIO_DONE(bp); 177 } 178 179 static int 180 mlxd_probe(device_t dev) 181 { 182 183 debug_called(1); 184 185 device_set_desc(dev, "Mylex System Drive"); 186 return (0); 187 } 188 189 static int 190 mlxd_attach(device_t dev) 191 { 192 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 193 device_t parent; 194 char *state; 195 int s1, s2; 196 197 debug_called(1); 198 199 parent = device_get_parent(dev); 200 sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent); 201 sc->mlxd_unit = device_get_unit(dev); 202 sc->mlxd_drive = device_get_ivars(dev); 203 sc->mlxd_dev = dev; 204 205 switch(sc->mlxd_drive->ms_state) { 206 case MLX_SYSD_ONLINE: 207 state = "online"; 208 break; 209 case MLX_SYSD_CRITICAL: 210 state = "critical"; 211 break; 212 case MLX_SYSD_OFFLINE: 213 state = "offline"; 214 break; 215 default: 216 state = "unknown state"; 217 } 218 219 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 220 sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE), 221 sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state); 222 223 sc->mlxd_disk = disk_alloc(); 224 sc->mlxd_disk->d_open = mlxd_open; 225 sc->mlxd_disk->d_close = mlxd_close; 226 sc->mlxd_disk->d_ioctl = mlxd_ioctl; 227 sc->mlxd_disk->d_strategy = mlxd_strategy; 228 sc->mlxd_disk->d_name = "mlxd"; 229 sc->mlxd_disk->d_unit = sc->mlxd_unit; 230 sc->mlxd_disk->d_drv1 = sc; 231 sc->mlxd_disk->d_sectorsize = MLX_BLKSIZE; 232 sc->mlxd_disk->d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size; 233 sc->mlxd_disk->d_fwsectors = sc->mlxd_drive->ms_sectors; 234 sc->mlxd_disk->d_fwheads = sc->mlxd_drive->ms_heads; 235 sc->mlxd_disk->d_flags = DISKFLAG_NEEDSGIANT; 236 237 /* 238 * Set maximum I/O size to the lesser of the recommended maximum and the practical 239 * maximum except on v2 cards where the maximum is set to 8 pages. 240 */ 241 if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2) 242 sc->mlxd_disk->d_maxsize = 8 * MLX_PAGE_SIZE; 243 else { 244 s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE; 245 s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * MLX_PAGE_SIZE; 246 sc->mlxd_disk->d_maxsize = imin(s1, s2); 247 } 248 249 disk_create(sc->mlxd_disk, DISK_VERSION); 250 251 return (0); 252 } 253 254 static int 255 mlxd_detach(device_t dev) 256 { 257 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 258 259 debug_called(1); 260 261 disk_destroy(sc->mlxd_disk); 262 263 return(0); 264 } 265 266