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 * $FreeBSD$ 28 */ 29 30 /* 31 * Disk driver for Mylex DAC960 RAID adapters. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 38 #include <sys/bus.h> 39 #include <sys/conf.h> 40 #include <sys/devicestat.h> 41 #include <sys/disk.h> 42 43 #include <machine/bus.h> 44 #include <sys/rman.h> 45 46 #include <dev/mlx/mlx_compat.h> 47 #include <dev/mlx/mlxio.h> 48 #include <dev/mlx/mlxvar.h> 49 #include <dev/mlx/mlxreg.h> 50 51 /* prototypes */ 52 static int mlxd_probe(device_t dev); 53 static int mlxd_attach(device_t dev); 54 static int mlxd_detach(device_t dev); 55 56 devclass_t mlxd_devclass; 57 58 static device_method_t mlxd_methods[] = { 59 DEVMETHOD(device_probe, mlxd_probe), 60 DEVMETHOD(device_attach, mlxd_attach), 61 DEVMETHOD(device_detach, mlxd_detach), 62 { 0, 0 } 63 }; 64 65 static driver_t mlxd_driver = { 66 "mlxd", 67 mlxd_methods, 68 sizeof(struct mlxd_softc) 69 }; 70 71 DRIVER_MODULE(mlxd, mlx, mlxd_driver, mlxd_devclass, 0, 0); 72 73 static int 74 mlxd_open(struct disk *dp) 75 { 76 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 77 78 debug_called(1); 79 80 if (sc == NULL) 81 return (ENXIO); 82 83 /* controller not active? */ 84 if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) 85 return(ENXIO); 86 87 sc->mlxd_flags |= MLXD_OPEN; 88 return (0); 89 } 90 91 static int 92 mlxd_close(struct disk *dp) 93 { 94 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 95 96 debug_called(1); 97 98 if (sc == NULL) 99 return (ENXIO); 100 sc->mlxd_flags &= ~MLXD_OPEN; 101 return (0); 102 } 103 104 static int 105 mlxd_ioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td) 106 { 107 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 108 int error; 109 110 debug_called(1); 111 112 if (sc == NULL) 113 return (ENXIO); 114 115 if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) { 116 debug(0, "mlx_submit_ioctl returned %d\n", error); 117 return(error); 118 } 119 return (ENOTTY); 120 } 121 122 /* 123 * Read/write routine for a buffer. Finds the proper unit, range checks 124 * arguments, and schedules the transfer. Does not wait for the transfer 125 * to complete. Multi-page transfers are supported. All I/O requests must 126 * be a multiple of a sector in length. 127 */ 128 static void 129 mlxd_strategy(mlx_bio *bp) 130 { 131 struct mlxd_softc *sc = (struct mlxd_softc *)MLX_BIO_SOFTC(bp); 132 133 debug_called(1); 134 135 /* bogus disk? */ 136 if (sc == NULL) { 137 MLX_BIO_SET_ERROR(bp, EINVAL); 138 goto bad; 139 } 140 141 /* XXX may only be temporarily offline - sleep? */ 142 if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) { 143 MLX_BIO_SET_ERROR(bp, ENXIO); 144 goto bad; 145 } 146 147 MLX_BIO_STATS_START(bp); 148 mlx_submit_buf(sc->mlxd_controller, bp); 149 return; 150 151 bad: 152 /* 153 * Correctly set the bio to indicate a failed tranfer. 154 */ 155 MLX_BIO_RESID(bp) = MLX_BIO_LENGTH(bp); 156 MLX_BIO_DONE(bp); 157 return; 158 } 159 160 void 161 mlxd_intr(void *data) 162 { 163 mlx_bio *bp = (mlx_bio *)data; 164 165 debug_called(1); 166 167 if (MLX_BIO_HAS_ERROR(bp)) 168 MLX_BIO_SET_ERROR(bp, EIO); 169 else 170 MLX_BIO_RESID(bp) = 0; 171 172 MLX_BIO_STATS_END(bp); 173 MLX_BIO_DONE(bp); 174 } 175 176 static int 177 mlxd_probe(device_t dev) 178 { 179 180 debug_called(1); 181 182 device_set_desc(dev, "Mylex System Drive"); 183 return (0); 184 } 185 186 static int 187 mlxd_attach(device_t dev) 188 { 189 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 190 device_t parent; 191 char *state; 192 int s1, s2; 193 194 debug_called(1); 195 196 parent = device_get_parent(dev); 197 sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent); 198 sc->mlxd_unit = device_get_unit(dev); 199 sc->mlxd_drive = device_get_ivars(dev); 200 sc->mlxd_dev = dev; 201 202 switch(sc->mlxd_drive->ms_state) { 203 case MLX_SYSD_ONLINE: 204 state = "online"; 205 break; 206 case MLX_SYSD_CRITICAL: 207 state = "critical"; 208 break; 209 case MLX_SYSD_OFFLINE: 210 state = "offline"; 211 break; 212 default: 213 state = "unknown state"; 214 } 215 216 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n", 217 sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE), 218 sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state); 219 220 devstat_add_entry(&sc->mlxd_stats, "mlxd", sc->mlxd_unit, MLX_BLKSIZE, 221 DEVSTAT_NO_ORDERED_TAGS, 222 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER, 223 DEVSTAT_PRIORITY_ARRAY); 224 225 sc->mlxd_disk.d_open = mlxd_open; 226 sc->mlxd_disk.d_close = mlxd_close; 227 sc->mlxd_disk.d_ioctl = mlxd_ioctl; 228 sc->mlxd_disk.d_strategy = mlxd_strategy; 229 sc->mlxd_disk.d_name = "mlxd"; 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; 235 236 /* 237 * Set maximum I/O size to the lesser of the recommended maximum and the practical 238 * maximum except on v2 cards where the maximum is set to 8 pages. 239 */ 240 if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2) 241 sc->mlxd_disk.d_maxsize = 8 * PAGE_SIZE; 242 else { 243 s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE; 244 s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * PAGE_SIZE; 245 sc->mlxd_disk.d_maxsize = imin(s1, s2); 246 } 247 248 disk_create(sc->mlxd_unit, &sc->mlxd_disk, 0, NULL, NULL); 249 250 return (0); 251 } 252 253 static int 254 mlxd_detach(device_t dev) 255 { 256 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev); 257 258 debug_called(1); 259 260 devstat_remove_entry(&sc->mlxd_stats); 261 disk_destroy(&sc->mlxd_disk); 262 263 return(0); 264 } 265 266