mfi_disk.c revision 169451
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 169451 2007-05-10 15:33:41Z scottl $"); 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 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link); 112 113 switch (ld_info->ld_config.params.state) { 114 case MFI_LD_STATE_OFFLINE: 115 state = "offline"; 116 break; 117 case MFI_LD_STATE_PARTIALLY_DEGRADED: 118 state = "partially degraded"; 119 break; 120 case MFI_LD_STATE_DEGRADED: 121 state = "degraded"; 122 break; 123 case MFI_LD_STATE_OPTIMAL: 124 state = "optimal"; 125 break; 126 default: 127 state = "unknown"; 128 break; 129 } 130 device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n", 131 sectors / (1024 * 1024 / secsize), sectors, 132 ld_info->ld_config.properties.name, 133 state); 134 135 sc->ld_disk = disk_alloc(); 136 sc->ld_disk->d_drv1 = sc; 137 sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize; 138 sc->ld_disk->d_name = "mfid"; 139 sc->ld_disk->d_open = mfi_disk_open; 140 sc->ld_disk->d_close = mfi_disk_close; 141 sc->ld_disk->d_strategy = mfi_disk_strategy; 142 sc->ld_disk->d_dump = mfi_disk_dump; 143 sc->ld_disk->d_unit = sc->ld_unit; 144 sc->ld_disk->d_sectorsize = secsize; 145 sc->ld_disk->d_mediasize = sectors * secsize; 146 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 147 sc->ld_disk->d_fwheads = 255; 148 sc->ld_disk->d_fwsectors = 63; 149 } else { 150 sc->ld_disk->d_fwheads = 64; 151 sc->ld_disk->d_fwsectors = 32; 152 } 153 disk_create(sc->ld_disk, DISK_VERSION); 154 155 return (0); 156} 157 158static int 159mfi_disk_detach(device_t dev) 160{ 161 struct mfi_disk *sc; 162 163 sc = device_get_softc(dev); 164 165 if ((sc->ld_disk->d_flags & DISKFLAG_OPEN) || 166 (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) 167 return (EBUSY); 168 169 free(sc->ld_info, M_MFIBUF); 170 disk_destroy(sc->ld_disk); 171 return (0); 172} 173 174static int 175mfi_disk_open(struct disk *dp) 176{ 177 struct mfi_disk *sc; 178 179 sc = dp->d_drv1; 180 mtx_lock(&sc->ld_controller->mfi_io_lock); 181 sc->ld_flags |= MFI_DISK_FLAGS_OPEN; 182 mtx_unlock(&sc->ld_controller->mfi_io_lock); 183 184 return (0); 185} 186 187static int 188mfi_disk_close(struct disk *dp) 189{ 190 struct mfi_disk *sc; 191 192 sc = dp->d_drv1; 193 mtx_lock(&sc->ld_controller->mfi_io_lock); 194 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN; 195 mtx_unlock(&sc->ld_controller->mfi_io_lock); 196 197 return (0); 198} 199 200static void 201mfi_disk_strategy(struct bio *bio) 202{ 203 struct mfi_disk *sc; 204 struct mfi_softc *controller; 205 206 sc = bio->bio_disk->d_drv1; 207 208 if (sc == NULL) { 209 bio->bio_error = EINVAL; 210 bio->bio_flags |= BIO_ERROR; 211 bio->bio_resid = bio->bio_bcount; 212 biodone(bio); 213 return; 214 } 215 216 controller = sc->ld_controller; 217 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 218 mtx_lock(&controller->mfi_io_lock); 219 mfi_enqueue_bio(controller, bio); 220 mfi_startio(controller); 221 mtx_unlock(&controller->mfi_io_lock); 222 return; 223} 224 225void 226mfi_disk_complete(struct bio *bio) 227{ 228 struct mfi_disk *sc; 229 struct mfi_frame_header *hdr; 230 231 sc = bio->bio_disk->d_drv1; 232 hdr = bio->bio_driver1; 233 234 if (bio->bio_flags & BIO_ERROR) { 235 if (bio->bio_error == 0) 236 bio->bio_error = EIO; 237 disk_err(bio, "hard error", -1, 1); 238 } else { 239 bio->bio_resid = 0; 240 } 241 biodone(bio); 242} 243 244static int 245mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 246{ 247 struct mfi_disk *sc; 248 struct mfi_softc *parent_sc; 249 struct disk *dp; 250 int error; 251 252 dp = arg; 253 sc = dp->d_drv1; 254 parent_sc = sc->ld_controller; 255 256 if (len > 0) { 257 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 258 MFI_SECTOR_LEN, virt, len)) != 0) 259 return (error); 260 } else { 261 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 262 } 263 264 return (0); 265} 266