1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * Copyright 1994-2009 The FreeBSD Project. 9 * All rights reserved. 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 19 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FREEBSD PROJECT OR 21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 22 * EXEMPLARY,OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24 * PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY THEORY 25 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * The views and conclusions contained in the software and documentation 30 * are those of the authors and should not be interpreted as representing 31 * official policies,either expressed or implied, of the FreeBSD Project. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include "opt_mfi.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/lock.h> 43 #include <sys/module.h> 44 #include <sys/malloc.h> 45 #include <sys/mutex.h> 46 #include <sys/selinfo.h> 47 #include <sys/sysctl.h> 48 #include <sys/uio.h> 49 50 #include <sys/bio.h> 51 #include <sys/bus.h> 52 #include <sys/conf.h> 53 #include <sys/disk.h> 54 #include <geom/geom_disk.h> 55 56 #include <vm/vm.h> 57 #include <vm/pmap.h> 58 59 #include <machine/md_var.h> 60 #include <machine/bus.h> 61 #include <sys/rman.h> 62 63 #include <dev/mfi/mfireg.h> 64 #include <dev/mfi/mfi_ioctl.h> 65 #include <dev/mfi/mfivar.h> 66 67 static int mfi_syspd_probe(device_t dev); 68 static int mfi_syspd_attach(device_t dev); 69 static int mfi_syspd_detach(device_t dev); 70 71 static disk_open_t mfi_syspd_open; 72 static disk_close_t mfi_syspd_close; 73 static disk_strategy_t mfi_syspd_strategy; 74 static dumper_t mfi_syspd_dump; 75 76 static devclass_t mfi_syspd_devclass; 77 78 static device_method_t mfi_syspd_methods[] = { 79 DEVMETHOD(device_probe, mfi_syspd_probe), 80 DEVMETHOD(device_attach, mfi_syspd_attach), 81 DEVMETHOD(device_detach, mfi_syspd_detach), 82 { 0, 0 } 83 }; 84 85 static driver_t mfi_syspd_driver = { 86 "mfisyspd", 87 mfi_syspd_methods, 88 sizeof(struct mfi_system_pd) 89 }; 90 91 DRIVER_MODULE(mfisyspd, mfi, mfi_syspd_driver, mfi_syspd_devclass, 0, 0); 92 93 static int 94 mfi_syspd_probe(device_t dev) 95 { 96 return (0); 97 } 98 99 static int 100 mfi_syspd_attach(device_t dev) 101 { 102 struct mfi_system_pd *sc; 103 struct mfi_pd_info *pd_info; 104 struct mfi_system_pending *syspd_pend; 105 uint64_t sectors; 106 uint32_t secsize; 107 108 sc = device_get_softc(dev); 109 pd_info = device_get_ivars(dev); 110 sc->pd_dev = dev; 111 sc->pd_id = pd_info->ref.v.device_id; 112 sc->pd_unit = device_get_unit(dev); 113 sc->pd_info = pd_info; 114 sc->pd_controller = device_get_softc(device_get_parent(dev)); 115 sc->pd_flags = 0; 116 117 sectors = pd_info->raw_size; 118 secsize = MFI_SECTOR_LEN; 119 mtx_lock(&sc->pd_controller->mfi_io_lock); 120 TAILQ_INSERT_TAIL(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link); 121 TAILQ_FOREACH(syspd_pend, &sc->pd_controller->mfi_syspd_pend_tqh, 122 pd_link) { 123 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_pend_tqh, 124 syspd_pend, pd_link); 125 free(syspd_pend, M_MFIBUF); 126 break; 127 } 128 mtx_unlock(&sc->pd_controller->mfi_io_lock); 129 device_printf(dev, "%juMB (%ju sectors) SYSPD volume (deviceid: %d)\n", 130 sectors / (1024 * 1024 / secsize), sectors, sc->pd_id); 131 sc->pd_disk = disk_alloc(); 132 sc->pd_disk->d_drv1 = sc; 133 sc->pd_disk->d_maxsize = min(sc->pd_controller->mfi_max_io * secsize, 134 (sc->pd_controller->mfi_max_sge - 1) * PAGE_SIZE); 135 sc->pd_disk->d_name = "mfisyspd"; 136 sc->pd_disk->d_open = mfi_syspd_open; 137 sc->pd_disk->d_close = mfi_syspd_close; 138 sc->pd_disk->d_strategy = mfi_syspd_strategy; 139 sc->pd_disk->d_dump = mfi_syspd_dump; 140 sc->pd_disk->d_unit = sc->pd_unit; 141 sc->pd_disk->d_sectorsize = secsize; 142 sc->pd_disk->d_mediasize = sectors * secsize; 143 if (sc->pd_disk->d_mediasize >= (1 * 1024 * 1024)) { 144 sc->pd_disk->d_fwheads = 255; 145 sc->pd_disk->d_fwsectors = 63; 146 } else { 147 sc->pd_disk->d_fwheads = 64; 148 sc->pd_disk->d_fwsectors = 32; 149 } 150 sc->pd_disk->d_flags = DISKFLAG_UNMAPPED_BIO; 151 disk_create(sc->pd_disk, DISK_VERSION); 152 153 device_printf(dev, " SYSPD volume attached\n"); 154 155 return (0); 156 } 157 158 static int 159 mfi_syspd_detach(device_t dev) 160 { 161 struct mfi_system_pd *sc; 162 163 sc = device_get_softc(dev); 164 device_printf(dev, "Detaching syspd\n"); 165 mtx_lock(&sc->pd_controller->mfi_io_lock); 166 if (((sc->pd_disk->d_flags & DISKFLAG_OPEN) || 167 (sc->pd_flags & MFI_DISK_FLAGS_OPEN)) && 168 (sc->pd_controller->mfi_keep_deleted_volumes || 169 sc->pd_controller->mfi_detaching)) { 170 mtx_unlock(&sc->pd_controller->mfi_io_lock); 171 device_printf(dev, "Cant detach syspd\n"); 172 return (EBUSY); 173 } 174 mtx_unlock(&sc->pd_controller->mfi_io_lock); 175 176 disk_destroy(sc->pd_disk); 177 mtx_lock(&sc->pd_controller->mfi_io_lock); 178 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link); 179 mtx_unlock(&sc->pd_controller->mfi_io_lock); 180 free(sc->pd_info, M_MFIBUF); 181 return (0); 182 } 183 184 static int 185 mfi_syspd_open(struct disk *dp) 186 { 187 struct mfi_system_pd *sc; 188 int error; 189 190 sc = dp->d_drv1; 191 mtx_lock(&sc->pd_controller->mfi_io_lock); 192 if (sc->pd_flags & MFI_DISK_FLAGS_DISABLED) 193 error = ENXIO; 194 else { 195 sc->pd_flags |= MFI_DISK_FLAGS_OPEN; 196 error = 0; 197 } 198 mtx_unlock(&sc->pd_controller->mfi_io_lock); 199 return (error); 200 } 201 202 static int 203 mfi_syspd_close(struct disk *dp) 204 { 205 struct mfi_system_pd *sc; 206 207 sc = dp->d_drv1; 208 mtx_lock(&sc->pd_controller->mfi_io_lock); 209 sc->pd_flags &= ~MFI_DISK_FLAGS_OPEN; 210 mtx_unlock(&sc->pd_controller->mfi_io_lock); 211 212 return (0); 213 } 214 215 int 216 mfi_syspd_disable(struct mfi_system_pd *sc) 217 { 218 219 device_printf(sc->pd_dev, "syspd disable \n"); 220 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED); 221 if (sc->pd_flags & MFI_DISK_FLAGS_OPEN) { 222 if (sc->pd_controller->mfi_delete_busy_volumes) 223 return (0); 224 device_printf(sc->pd_dev, 225 "Unable to delete busy syspd device\n"); 226 return (EBUSY); 227 } 228 sc->pd_flags |= MFI_DISK_FLAGS_DISABLED; 229 return (0); 230 } 231 232 void 233 mfi_syspd_enable(struct mfi_system_pd *sc) 234 { 235 236 device_printf(sc->pd_dev, "syspd enable \n"); 237 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED); 238 sc->pd_flags &= ~MFI_DISK_FLAGS_DISABLED; 239 } 240 241 static void 242 mfi_syspd_strategy(struct bio *bio) 243 { 244 struct mfi_system_pd *sc; 245 struct mfi_softc *controller; 246 247 sc = bio->bio_disk->d_drv1; 248 249 if (sc == NULL) { 250 bio->bio_error = EINVAL; 251 bio->bio_flags |= BIO_ERROR; 252 bio->bio_resid = bio->bio_bcount; 253 biodone(bio); 254 return; 255 } 256 257 controller = sc->pd_controller; 258 bio->bio_driver1 = (void *)(uintptr_t)sc->pd_id; 259 /* Mark it as system PD IO */ 260 bio->bio_driver2 = (void *)MFI_SYS_PD_IO; 261 mtx_lock(&controller->mfi_io_lock); 262 mfi_enqueue_bio(controller, bio); 263 mfi_startio(controller); 264 mtx_unlock(&controller->mfi_io_lock); 265 return; 266 } 267 268 static int 269 mfi_syspd_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, 270 size_t len) 271 { 272 struct mfi_system_pd *sc; 273 struct mfi_softc *parent_sc; 274 struct disk *dp; 275 int error; 276 277 dp = arg; 278 sc = dp->d_drv1; 279 parent_sc = sc->pd_controller; 280 281 if (len > 0) { 282 if ((error = mfi_dump_syspd_blocks(parent_sc, 283 sc->pd_id, offset / MFI_SECTOR_LEN, virt, len)) != 0) 284 return (error); 285 } else { 286 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 287 } 288 return (0); 289 } 290