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