mlx_disk.c revision 111979
1169691Skan/*- 2169691Skan * Copyright (c) 1999 Jonathan Lemon 3169691Skan * Copyright (c) 1999 Michael Smith 4169691Skan * All rights reserved. 5169691Skan * 6169691Skan * Redistribution and use in source and binary forms, with or without 7169691Skan * modification, are permitted provided that the following conditions 8169691Skan * are met: 9169691Skan * 1. Redistributions of source code must retain the above copyright 10169691Skan * notice, this list of conditions and the following disclaimer. 11169691Skan * 2. Redistributions in binary form must reproduce the above copyright 12169691Skan * notice, this list of conditions and the following disclaimer in the 13169691Skan * documentation and/or other materials provided with the distribution. 14169691Skan * 15169691Skan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16169691Skan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17169691Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18169691Skan * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19169691Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20169691Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21169691Skan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22169691Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23169691Skan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24169691Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25169691Skan * SUCH DAMAGE. 26169691Skan * 27169691Skan * $FreeBSD: head/sys/dev/mlx/mlx_disk.c 111979 2003-03-08 08:01:31Z phk $ 28169691Skan */ 29169691Skan 30169691Skan/* 31169691Skan * Disk driver for Mylex DAC960 RAID adapters. 32169691Skan */ 33169691Skan 34169691Skan#include <sys/param.h> 35169691Skan#include <sys/systm.h> 36169691Skan#include <sys/kernel.h> 37169691Skan 38169691Skan#include <sys/bus.h> 39169691Skan#include <sys/conf.h> 40169691Skan#include <sys/disk.h> 41169691Skan 42169691Skan#include <machine/bus.h> 43169691Skan#include <sys/rman.h> 44169691Skan 45169691Skan#include <dev/mlx/mlx_compat.h> 46169691Skan#include <dev/mlx/mlxio.h> 47169691Skan#include <dev/mlx/mlxvar.h> 48169691Skan#include <dev/mlx/mlxreg.h> 49169691Skan 50169691Skan/* prototypes */ 51169691Skanstatic int mlxd_probe(device_t dev); 52169691Skanstatic int mlxd_attach(device_t dev); 53169691Skanstatic int mlxd_detach(device_t dev); 54169691Skan 55169691Skandevclass_t mlxd_devclass; 56169691Skan 57169691Skanstatic device_method_t mlxd_methods[] = { 58169691Skan DEVMETHOD(device_probe, mlxd_probe), 59169691Skan DEVMETHOD(device_attach, mlxd_attach), 60169691Skan DEVMETHOD(device_detach, mlxd_detach), 61169691Skan { 0, 0 } 62169691Skan}; 63169691Skan 64169691Skanstatic driver_t mlxd_driver = { 65169691Skan "mlxd", 66169691Skan mlxd_methods, 67169691Skan sizeof(struct mlxd_softc) 68169691Skan}; 69169691Skan 70169691SkanDRIVER_MODULE(mlxd, mlx, mlxd_driver, mlxd_devclass, 0, 0); 71169691Skan 72169691Skanstatic int 73169691Skanmlxd_open(struct disk *dp) 74169691Skan{ 75169691Skan struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 76169691Skan 77169691Skan debug_called(1); 78169691Skan 79169691Skan if (sc == NULL) 80169691Skan return (ENXIO); 81169691Skan 82169691Skan /* controller not active? */ 83169691Skan if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) 84169691Skan return(ENXIO); 85169691Skan 86169691Skan sc->mlxd_flags |= MLXD_OPEN; 87169691Skan return (0); 88169691Skan} 89169691Skan 90169691Skanstatic int 91169691Skanmlxd_close(struct disk *dp) 92169691Skan{ 93169691Skan struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1; 94169691Skan 95169691Skan debug_called(1); 96169691Skan 97169691Skan if (sc == NULL) 98169691Skan return (ENXIO); 99169691Skan sc->mlxd_flags &= ~MLXD_OPEN; 100 return (0); 101} 102 103static int 104mlxd_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 */ 127static void 128mlxd_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 159void 160mlxd_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 175static int 176mlxd_probe(device_t dev) 177{ 178 179 debug_called(1); 180 181 device_set_desc(dev, "Mylex System Drive"); 182 return (0); 183} 184 185static int 186mlxd_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 247static int 248mlxd_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