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/selinfo.h> 43 #include <sys/module.h> 44 #include <sys/malloc.h> 45 #include <sys/sysctl.h> 46 #include <sys/uio.h> 47 48 #include <sys/bio.h> 49 #include <sys/bus.h> 50 #include <sys/conf.h> 51 #include <sys/disk.h> 52 #include <geom/geom_disk.h> 53 54 #include <vm/vm.h> 55 #include <vm/pmap.h> 56 57 #include <machine/md_var.h> 58 #include <machine/bus.h> 59 #include <sys/rman.h> 60 61 #include <dev/mfi/mfireg.h> 62 #include <dev/mfi/mfi_ioctl.h> 63 #include <dev/mfi/mfivar.h> 64 65 static int mfi_syspd_probe(device_t dev); 66 static int mfi_syspd_attach(device_t dev); 67 static int mfi_syspd_detach(device_t dev); 68 69 static disk_open_t mfi_syspd_open; 70 static disk_close_t mfi_syspd_close; 71 static disk_strategy_t mfi_syspd_strategy; 72 static dumper_t mfi_syspd_dump; 73 74 static devclass_t mfi_syspd_devclass; 75 76 static device_method_t mfi_syspd_methods[] = { 77 DEVMETHOD(device_probe, mfi_syspd_probe), 78 DEVMETHOD(device_attach, mfi_syspd_attach), 79 DEVMETHOD(device_detach, mfi_syspd_detach), 80 { 0, 0 } 81 }; 82 83 static driver_t mfi_syspd_driver = { 84 "mfisyspd", 85 mfi_syspd_methods, 86 sizeof(struct mfi_system_pd) 87 }; 88 89 DRIVER_MODULE(mfisyspd, mfi, mfi_syspd_driver, mfi_syspd_devclass, 0, 0); 90 91 static int 92 mfi_syspd_probe(device_t dev) 93 { 94 return (0); 95 } 96 97 static int 98 mfi_syspd_attach(device_t dev) 99 { 100 struct mfi_system_pd *sc; 101 struct mfi_pd_info *pd_info; 102 struct mfi_system_pending *syspd_pend; 103 uint64_t sectors; 104 uint32_t secsize; 105 106 sc = device_get_softc(dev); 107 pd_info = device_get_ivars(dev); 108 sc->pd_dev = dev; 109 sc->pd_id = pd_info->ref.v.device_id; 110 sc->pd_unit = device_get_unit(dev); 111 sc->pd_info = pd_info; 112 sc->pd_controller = device_get_softc(device_get_parent(dev)); 113 sc->pd_flags = 0; 114 115 sectors = pd_info->raw_size; 116 secsize = MFI_SECTOR_LEN; 117 mtx_lock(&sc->pd_controller->mfi_io_lock); 118 TAILQ_INSERT_TAIL(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link); 119 TAILQ_FOREACH(syspd_pend, &sc->pd_controller->mfi_syspd_pend_tqh, 120 pd_link) { 121 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_pend_tqh, 122 syspd_pend, pd_link); 123 free(syspd_pend, M_MFIBUF); 124 break; 125 } 126 mtx_unlock(&sc->pd_controller->mfi_io_lock); 127 device_printf(dev, "%juMB (%ju sectors) SYSPD volume (deviceid: %d)\n", 128 sectors / (1024 * 1024 / secsize), sectors, sc->pd_id); 129 sc->pd_disk = disk_alloc(); 130 sc->pd_disk->d_drv1 = sc; 131 sc->pd_disk->d_maxsize = min(sc->pd_controller->mfi_max_io * secsize, 132 (sc->pd_controller->mfi_max_sge - 1) * PAGE_SIZE); 133 sc->pd_disk->d_name = "mfisyspd"; 134 sc->pd_disk->d_open = mfi_syspd_open; 135 sc->pd_disk->d_close = mfi_syspd_close; 136 sc->pd_disk->d_strategy = mfi_syspd_strategy; 137 sc->pd_disk->d_dump = mfi_syspd_dump; 138 sc->pd_disk->d_unit = sc->pd_unit; 139 sc->pd_disk->d_sectorsize = secsize; 140 sc->pd_disk->d_mediasize = sectors * secsize; 141 if (sc->pd_disk->d_mediasize >= (1 * 1024 * 1024)) { 142 sc->pd_disk->d_fwheads = 255; 143 sc->pd_disk->d_fwsectors = 63; 144 } else { 145 sc->pd_disk->d_fwheads = 64; 146 sc->pd_disk->d_fwsectors = 32; 147 } 148 sc->pd_disk->d_flags = DISKFLAG_UNMAPPED_BIO; 149 disk_create(sc->pd_disk, DISK_VERSION); 150 151 device_printf(dev, " SYSPD volume attached\n"); 152 153 return (0); 154 } 155 156 static int 157 mfi_syspd_detach(device_t dev) 158 { 159 struct mfi_system_pd *sc; 160 161 sc = device_get_softc(dev); 162 device_printf(dev, "Detaching syspd\n"); 163 mtx_lock(&sc->pd_controller->mfi_io_lock); 164 if (((sc->pd_disk->d_flags & DISKFLAG_OPEN) || 165 (sc->pd_flags & MFI_DISK_FLAGS_OPEN)) && 166 (sc->pd_controller->mfi_keep_deleted_volumes || 167 sc->pd_controller->mfi_detaching)) { 168 mtx_unlock(&sc->pd_controller->mfi_io_lock); 169 device_printf(dev, "Cant detach syspd\n"); 170 return (EBUSY); 171 } 172 mtx_unlock(&sc->pd_controller->mfi_io_lock); 173 174 disk_destroy(sc->pd_disk); 175 mtx_lock(&sc->pd_controller->mfi_io_lock); 176 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link); 177 mtx_unlock(&sc->pd_controller->mfi_io_lock); 178 free(sc->pd_info, M_MFIBUF); 179 return (0); 180 } 181 182 static int 183 mfi_syspd_open(struct disk *dp) 184 { 185 struct mfi_system_pd *sc; 186 int error; 187 188 sc = dp->d_drv1; 189 mtx_lock(&sc->pd_controller->mfi_io_lock); 190 if (sc->pd_flags & MFI_DISK_FLAGS_DISABLED) 191 error = ENXIO; 192 else { 193 sc->pd_flags |= MFI_DISK_FLAGS_OPEN; 194 error = 0; 195 } 196 mtx_unlock(&sc->pd_controller->mfi_io_lock); 197 return (error); 198 } 199 200 static int 201 mfi_syspd_close(struct disk *dp) 202 { 203 struct mfi_system_pd *sc; 204 205 sc = dp->d_drv1; 206 mtx_lock(&sc->pd_controller->mfi_io_lock); 207 sc->pd_flags &= ~MFI_DISK_FLAGS_OPEN; 208 mtx_unlock(&sc->pd_controller->mfi_io_lock); 209 210 return (0); 211 } 212 213 int 214 mfi_syspd_disable(struct mfi_system_pd *sc) 215 { 216 217 device_printf(sc->pd_dev, "syspd disable \n"); 218 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED); 219 if (sc->pd_flags & MFI_DISK_FLAGS_OPEN) { 220 if (sc->pd_controller->mfi_delete_busy_volumes) 221 return (0); 222 device_printf(sc->pd_dev, 223 "Unable to delete busy syspd device\n"); 224 return (EBUSY); 225 } 226 sc->pd_flags |= MFI_DISK_FLAGS_DISABLED; 227 return (0); 228 } 229 230 void 231 mfi_syspd_enable(struct mfi_system_pd *sc) 232 { 233 234 device_printf(sc->pd_dev, "syspd enable \n"); 235 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED); 236 sc->pd_flags &= ~MFI_DISK_FLAGS_DISABLED; 237 } 238 239 static void 240 mfi_syspd_strategy(struct bio *bio) 241 { 242 struct mfi_system_pd *sc; 243 struct mfi_softc *controller; 244 245 sc = bio->bio_disk->d_drv1; 246 247 if (sc == NULL) { 248 bio->bio_error = EINVAL; 249 bio->bio_flags |= BIO_ERROR; 250 bio->bio_resid = bio->bio_bcount; 251 biodone(bio); 252 return; 253 } 254 255 controller = sc->pd_controller; 256 bio->bio_driver1 = (void *)(uintptr_t)sc->pd_id; 257 /* Mark it as system PD IO */ 258 bio->bio_driver2 = (void *)MFI_SYS_PD_IO; 259 mtx_lock(&controller->mfi_io_lock); 260 mfi_enqueue_bio(controller, bio); 261 mfi_startio(controller); 262 mtx_unlock(&controller->mfi_io_lock); 263 return; 264 } 265 266 static int 267 mfi_syspd_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, 268 size_t len) 269 { 270 struct mfi_system_pd *sc; 271 struct mfi_softc *parent_sc; 272 struct disk *dp; 273 int error; 274 275 dp = arg; 276 sc = dp->d_drv1; 277 parent_sc = sc->pd_controller; 278 279 if (len > 0) { 280 if ((error = mfi_dump_syspd_blocks(parent_sc, 281 sc->pd_id, offset / MFI_SECTOR_LEN, virt, len)) != 0) 282 return (error); 283 } else { 284 /* mfi_sync_cache(parent_sc, sc->ld_id); */ 285 } 286 return (0); 287 } 288