mfi_disk.c revision 171821
1/*- 2 * Copyright (c) 2006 IronPort Systems 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/mfi/mfi_disk.c 171821 2007-08-13 19:29:17Z jhb $"); 29 30#include "opt_mfi.h" 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/kernel.h> 35#include <sys/selinfo.h> 36#include <sys/module.h> 37#include <sys/malloc.h> 38#include <sys/uio.h> 39 40#include <sys/bio.h> 41#include <sys/bus.h> 42#include <sys/conf.h> 43#include <sys/disk.h> 44#include <geom/geom_disk.h> 45 46#include <vm/vm.h> 47#include <vm/pmap.h> 48 49#include <machine/md_var.h> 50#include <machine/bus.h> 51#include <sys/rman.h> 52 53#include <dev/mfi/mfireg.h> 54#include <dev/mfi/mfi_ioctl.h> 55#include <dev/mfi/mfivar.h> 56 57static int mfi_disk_probe(device_t dev); 58static int mfi_disk_attach(device_t dev); 59static int mfi_disk_detach(device_t dev); 60 61static disk_open_t mfi_disk_open; 62static disk_close_t mfi_disk_close; 63static disk_strategy_t mfi_disk_strategy; 64static dumper_t mfi_disk_dump; 65 66static devclass_t mfi_disk_devclass; 67 68static device_method_t mfi_disk_methods[] = { 69 DEVMETHOD(device_probe, mfi_disk_probe), 70 DEVMETHOD(device_attach, mfi_disk_attach), 71 DEVMETHOD(device_detach, mfi_disk_detach), 72 { 0, 0 } 73}; 74 75static driver_t mfi_disk_driver = { 76 "mfid", 77 mfi_disk_methods, 78 sizeof(struct mfi_disk) 79}; 80 81DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0); 82 83static int 84mfi_disk_probe(device_t dev) 85{ 86 87 return (0); 88} 89 90static int 91mfi_disk_attach(device_t dev) 92{ 93 struct mfi_disk *sc; 94 struct mfi_ld_info *ld_info; 95 uint64_t sectors; 96 uint32_t secsize; 97 char *state; 98 99 sc = device_get_softc(dev); 100 ld_info = device_get_ivars(dev); 101 102 sc->ld_dev = dev; 103 sc->ld_id = ld_info->ld_config.properties.ld.v.target_id; 104 sc->ld_unit = device_get_unit(dev); 105 sc->ld_info = ld_info; 106 sc->ld_controller = device_get_softc(device_get_parent(dev)); 107 sc->ld_flags = 0; 108 109 sectors = ld_info->size; 110 secsize = MFI_SECTOR_LEN; 111 mtx_lock(&sc->ld_controller->mfi_io_lock); 112 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); 113 mtx_unlock(&sc->ld_controller->mfi_io_lock); 114 115 switch (ld_info->ld_config.params.state) { 116 case MFI_LD_STATE_OFFLINE: 117 state = "offline"; 118 break; 119 case MFI_LD_STATE_PARTIALLY_DEGRADED: 120 state = "partially degraded"; 121 break; 122 case MFI_LD_STATE_DEGRADED: 123 state = "degraded"; 124 break; 125 case MFI_LD_STATE_OPTIMAL: 126 state = "optimal"; 127 break; 128 default: 129 state = "unknown"; 130 break; 131 } 132 device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n", 133 sectors / (1024 * 1024 / secsize), sectors, 134 ld_info->ld_config.properties.name, 135 state); 136 137 sc->ld_disk = disk_alloc(); 138 sc->ld_disk->d_drv1 = sc; 139 sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize; 140 sc->ld_disk->d_name = "mfid"; 141 sc->ld_disk->d_open = mfi_disk_open; 142 sc->ld_disk->d_close = mfi_disk_close; 143 sc->ld_disk->d_strategy = mfi_disk_strategy; 144 sc->ld_disk->d_dump = mfi_disk_dump; 145 sc->ld_disk->d_unit = sc->ld_unit; 146 sc->ld_disk->d_sectorsize = secsize; 147 sc->ld_disk->d_mediasize = sectors * secsize; 148 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 149 sc->ld_disk->d_fwheads = 255; 150 sc->ld_disk->d_fwsectors = 63; 151 } else { 152 sc->ld_disk->d_fwheads = 64; 153 sc->ld_disk->d_fwsectors = 32; 154 } 155 disk_create(sc->ld_disk, DISK_VERSION); 156 157 return (0); 158} 159 160static int 161mfi_disk_detach(device_t dev) 162{ 163 struct mfi_disk *sc; 164 165 sc = device_get_softc(dev); 166 167 mtx_lock(&sc->ld_controller->mfi_io_lock); 168 if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) || 169 (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) && 170 (sc->ld_controller->mfi_keep_deleted_volumes || 171 sc->ld_controller->mfi_detaching)) { 172 mtx_unlock(&sc->ld_controller->mfi_io_lock); 173 return (EBUSY); 174 } 175 mtx_unlock(&sc->ld_controller->mfi_io_lock); 176 177 disk_destroy(sc->ld_disk); 178 mtx_lock(&sc->ld_controller->mfi_io_lock); 179 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); 180 mtx_unlock(&sc->ld_controller->mfi_io_lock); 181 free(sc->ld_info, M_MFIBUF); 182 return (0); 183} 184 185static int 186mfi_disk_open(struct disk *dp) 187{ 188 struct mfi_disk *sc; 189 int error; 190 191 sc = dp->d_drv1; 192 mtx_lock(&sc->ld_controller->mfi_io_lock); 193 if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED) 194 error = ENXIO; 195 else { 196 sc->ld_flags |= MFI_DISK_FLAGS_OPEN; 197 error = 0; 198 } 199 mtx_unlock(&sc->ld_controller->mfi_io_lock); 200 201 return (error); 202} 203 204static int 205mfi_disk_close(struct disk *dp) 206{ 207 struct mfi_disk *sc; 208 209 sc = dp->d_drv1; 210 mtx_lock(&sc->ld_controller->mfi_io_lock); 211 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN; 212 mtx_unlock(&sc->ld_controller->mfi_io_lock); 213 214 return (0); 215} 216 217int 218mfi_disk_disable(struct mfi_disk *sc) 219{ 220 221 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); 222 if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) { 223 if (sc->ld_controller->mfi_delete_busy_volumes) 224 return (0); 225 device_printf(sc->ld_dev, "Unable to delete busy device\n"); 226 return (EBUSY); 227 } 228 sc->ld_flags |= MFI_DISK_FLAGS_DISABLED; 229 return (0); 230} 231 232void 233mfi_disk_enable(struct mfi_disk *sc) 234{ 235 236 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED); 237 sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED; 238} 239 240static void 241mfi_disk_strategy(struct bio *bio) 242{ 243 struct mfi_disk *sc; 244 struct mfi_softc *controller; 245 246 sc = bio->bio_disk->d_drv1; 247 248 if (sc == NULL) { 249 bio->bio_error = EINVAL; 250 bio->bio_flags |= BIO_ERROR; 251 bio->bio_resid = bio->bio_bcount; 252 biodone(bio); 253 return; 254 } 255 256 controller = sc->ld_controller; 257 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 258 mtx_lock(&controller->mfi_io_lock); 259 mfi_enqueue_bio(controller, bio); 260 mfi_startio(controller); 261 mtx_unlock(&controller->mfi_io_lock); 262 return; 263} 264 265void 266mfi_disk_complete(struct bio *bio) 267{ 268 struct mfi_disk *sc; 269 struct mfi_frame_header *hdr; 270 271 sc = bio->bio_disk->d_drv1; 272 hdr = bio->bio_driver1; 273 274 if (bio->bio_flags & BIO_ERROR) { 275 if (bio->bio_error == 0) 276 bio->bio_error = EIO; 277 disk_err(bio, "hard error", -1, 1); 278 } else { 279 bio->bio_resid = 0; 280 } 281 biodone(bio); 282} 283 284static int 285mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 286{ 287 struct mfi_disk *sc; 288 struct mfi_softc *parent_sc; 289 struct disk *dp; 290 int error; 291 292 dp = arg; 293 sc = dp->d_drv1; 294 parent_sc = sc->ld_controller; 295 296 if (len > 0) { 297 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 298 MFI_SECTOR_LEN, virt, len)) != 0) 299 return (error); 300 } else { 301 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 302 } 303 304 return (0); 305} 306