mfi_disk.c revision 157197
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 157197 2006-03-28 01:59:11Z 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/module.h> 36#include <sys/malloc.h> 37 38#include <sys/bio.h> 39#include <sys/bus.h> 40#include <sys/conf.h> 41#include <sys/disk.h> 42#include <geom/geom_disk.h> 43 44#include <vm/vm.h> 45#include <vm/pmap.h> 46 47#include <machine/md_var.h> 48#include <machine/bus.h> 49#include <sys/rman.h> 50 51#include <dev/mfi/mfireg.h> 52#include <dev/mfi/mfi_ioctl.h> 53#include <dev/mfi/mfivar.h> 54 55static int mfi_disk_probe(device_t dev); 56static int mfi_disk_attach(device_t dev); 57static int mfi_disk_detach(device_t dev); 58 59static disk_open_t mfi_disk_open; 60static disk_close_t mfi_disk_close; 61static disk_strategy_t mfi_disk_strategy; 62static dumper_t mfi_disk_dump; 63 64static devclass_t mfi_disk_devclass; 65 66struct mfi_disk { 67 device_t ld_dev; 68 int ld_id; 69 int ld_unit; 70 struct mfi_softc *ld_controller; 71 struct mfi_ld *ld_ld; 72 struct disk *ld_disk; 73}; 74 75static device_method_t mfi_disk_methods[] = { 76 DEVMETHOD(device_probe, mfi_disk_probe), 77 DEVMETHOD(device_attach, mfi_disk_attach), 78 DEVMETHOD(device_detach, mfi_disk_detach), 79 { 0, 0 } 80}; 81 82static driver_t mfi_disk_driver = { 83 "mfid", 84 mfi_disk_methods, 85 sizeof(struct mfi_disk) 86}; 87 88DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0); 89 90static int 91mfi_disk_probe(device_t dev) 92{ 93 94 return (0); 95} 96 97static int 98mfi_disk_attach(device_t dev) 99{ 100 struct mfi_disk *sc; 101 struct mfi_ld *ld; 102 uint64_t sectors; 103 uint32_t secsize; 104 105 sc = device_get_softc(dev); 106 ld = device_get_ivars(dev); 107 108 sc->ld_dev = dev; 109 sc->ld_id = ld->ld_id; 110 sc->ld_unit = device_get_unit(dev); 111 sc->ld_ld = device_get_ivars(dev); 112 sc->ld_controller = device_get_softc(device_get_parent(dev)); 113 114 sectors = sc->ld_ld->ld_sectors; 115 secsize = sc->ld_ld->ld_secsize; 116 if (secsize != MFI_SECTOR_LEN) { 117 device_printf(sc->ld_dev, "Reported sector length %d is not " 118 "512, aborting\n", secsize); 119 free(sc->ld_ld, M_MFIBUF); 120 return (EINVAL); 121 } 122 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, ld, ld_link); 123 124 device_printf(dev, "%juMB (%ju sectors) RAID\n", 125 sectors / (1024 * 1024 / secsize), sectors); 126 127 sc->ld_disk = disk_alloc(); 128 sc->ld_disk->d_drv1 = sc; 129 sc->ld_disk->d_maxsize = sc->ld_controller->mfi_max_io * secsize; 130 sc->ld_disk->d_name = "mfid"; 131 sc->ld_disk->d_open = mfi_disk_open; 132 sc->ld_disk->d_close = mfi_disk_close; 133 sc->ld_disk->d_strategy = mfi_disk_strategy; 134 sc->ld_disk->d_dump = mfi_disk_dump; 135 sc->ld_disk->d_unit = sc->ld_unit; 136 sc->ld_disk->d_sectorsize = secsize; 137 sc->ld_disk->d_mediasize = sectors * secsize; 138 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) { 139 sc->ld_disk->d_fwheads = 255; 140 sc->ld_disk->d_fwsectors = 63; 141 } else { 142 sc->ld_disk->d_fwheads = 64; 143 sc->ld_disk->d_fwsectors = 32; 144 } 145 disk_create(sc->ld_disk, DISK_VERSION); 146 147 return (0); 148} 149 150static int 151mfi_disk_detach(device_t dev) 152{ 153 struct mfi_disk *sc; 154 155 sc = device_get_softc(dev); 156 157 if (sc->ld_disk->d_flags & DISKFLAG_OPEN) 158 return (EBUSY); 159 160 disk_destroy(sc->ld_disk); 161 return (0); 162} 163 164static int 165mfi_disk_open(struct disk *dp) 166{ 167 168 return (0); 169} 170 171static int 172mfi_disk_close(struct disk *dp) 173{ 174 175 return (0); 176} 177 178static void 179mfi_disk_strategy(struct bio *bio) 180{ 181 struct mfi_disk *sc; 182 struct mfi_softc *controller; 183 184 sc = bio->bio_disk->d_drv1; 185 186 if (sc == NULL) { 187 bio->bio_error = EINVAL; 188 bio->bio_flags |= BIO_ERROR; 189 bio->bio_resid = bio->bio_bcount; 190 biodone(bio); 191 return; 192 } 193 194 controller = sc->ld_controller; 195 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id; 196 mtx_lock(&controller->mfi_io_lock); 197 mfi_enqueue_bio(controller, bio); 198 mfi_startio(controller); 199 mtx_unlock(&controller->mfi_io_lock); 200 return; 201} 202 203void 204mfi_disk_complete(struct bio *bio) 205{ 206 struct mfi_disk *sc; 207 struct mfi_frame_header *hdr; 208 209 sc = bio->bio_disk->d_drv1; 210 hdr = bio->bio_driver1; 211 212 if (bio->bio_flags & BIO_ERROR) { 213 if (bio->bio_error == 0) 214 bio->bio_error = EIO; 215 disk_err(bio, "hard error", -1, 1); 216 } else { 217 bio->bio_resid = 0; 218 } 219 biodone(bio); 220} 221 222static int 223mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len) 224{ 225 struct mfi_disk *sc; 226 struct mfi_softc *parent_sc; 227 struct disk *dp; 228 int error; 229 230 dp = arg; 231 sc = dp->d_drv1; 232 parent_sc = sc->ld_controller; 233 234 if (len > 0) { 235 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset / 236 sc->ld_ld->ld_secsize, virt, len)) != 0) 237 return (error); 238 } else { 239 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 240 } 241 242 return (0); 243} 244