1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Written by: David Jeffery 5 * Copyright (c) 2002 Adaptec Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <dev/ips/ipsreg.h> 34 #include <dev/ips/ips.h> 35 #include <dev/ips/ips_disk.h> 36 #include <sys/stat.h> 37 38 static int ipsd_probe(device_t dev); 39 static int ipsd_attach(device_t dev); 40 static int ipsd_detach(device_t dev); 41 42 static int ipsd_dump(void *arg, void *virtual, off_t offset, size_t length); 43 static void ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, 44 int error); 45 static void ipsd_dump_block_complete(ips_command_t *command); 46 47 static disk_open_t ipsd_open; 48 static disk_close_t ipsd_close; 49 static disk_strategy_t ipsd_strategy; 50 51 static device_method_t ipsd_methods[] = { 52 DEVMETHOD(device_probe, ipsd_probe), 53 DEVMETHOD(device_attach, ipsd_attach), 54 DEVMETHOD(device_detach, ipsd_detach), 55 { 0, 0 } 56 }; 57 58 static driver_t ipsd_driver = { 59 "ipsd", 60 ipsd_methods, 61 sizeof(ipsdisk_softc_t) 62 }; 63 64 DRIVER_MODULE(ipsd, ips, ipsd_driver, 0, 0); 65 66 /* handle opening of disk device. It must set up all 67 information about the geometry and size of the disk */ 68 static int ipsd_open(struct disk *dp) 69 { 70 ipsdisk_softc_t *dsc = dp->d_drv1; 71 72 dsc->state |= IPS_DEV_OPEN; 73 DEVICE_PRINTF(2, dsc->dev, "I'm open\n"); 74 return 0; 75 } 76 77 static int ipsd_close(struct disk *dp) 78 { 79 ipsdisk_softc_t *dsc = dp->d_drv1; 80 dsc->state &= ~IPS_DEV_OPEN; 81 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n"); 82 return 0; 83 } 84 85 /* ipsd_finish is called to clean up and return a completed IO request */ 86 void ipsd_finish(struct bio *iobuf) 87 { 88 ipsdisk_softc_t *dsc; 89 dsc = iobuf->bio_disk->d_drv1; 90 91 if (iobuf->bio_flags & BIO_ERROR) { 92 ipsdisk_softc_t *dsc; 93 dsc = iobuf->bio_disk->d_drv1; 94 device_printf(dsc->dev, "iobuf error %d\n", iobuf->bio_error); 95 } else 96 iobuf->bio_resid = 0; 97 98 biodone(iobuf); 99 ips_start_io_request(dsc->sc); 100 } 101 102 103 static void ipsd_strategy(struct bio *iobuf) 104 { 105 ipsdisk_softc_t *dsc; 106 107 dsc = iobuf->bio_disk->d_drv1; 108 DEVICE_PRINTF(8,dsc->dev,"in strategy\n"); 109 iobuf->bio_driver1 = (void *)(uintptr_t)dsc->sc->drives[dsc->disk_number].drivenum; 110 111 if ((iobuf->bio_cmd != BIO_READ) && 112 (iobuf->bio_cmd != BIO_WRITE)) { 113 biofinish(iobuf, NULL, EOPNOTSUPP); 114 return; 115 } 116 117 mtx_lock(&dsc->sc->queue_mtx); 118 bioq_insert_tail(&dsc->sc->queue, iobuf); 119 ips_start_io_request(dsc->sc); 120 mtx_unlock(&dsc->sc->queue_mtx); 121 } 122 123 static int ipsd_probe(device_t dev) 124 { 125 DEVICE_PRINTF(2,dev, "in probe\n"); 126 device_set_desc(dev, "Logical Drive"); 127 return 0; 128 } 129 130 static int ipsd_attach(device_t dev) 131 { 132 device_t adapter; 133 ipsdisk_softc_t *dsc; 134 u_int totalsectors; 135 136 DEVICE_PRINTF(2,dev, "in attach\n"); 137 138 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 139 bzero(dsc, sizeof(ipsdisk_softc_t)); 140 adapter = device_get_parent(dev); 141 dsc->dev = dev; 142 dsc->sc = device_get_softc(adapter); 143 dsc->unit = device_get_unit(dev); 144 dsc->disk_number = (uintptr_t) device_get_ivars(dev); 145 dsc->ipsd_disk = disk_alloc(); 146 dsc->ipsd_disk->d_drv1 = dsc; 147 dsc->ipsd_disk->d_name = "ipsd"; 148 dsc->ipsd_disk->d_maxsize = IPS_MAX_IO_SIZE; 149 dsc->ipsd_disk->d_open = ipsd_open; 150 dsc->ipsd_disk->d_close = ipsd_close; 151 dsc->ipsd_disk->d_strategy = ipsd_strategy; 152 dsc->ipsd_disk->d_dump = ipsd_dump; 153 154 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count; 155 if ((totalsectors > 0x400000) && 156 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) { 157 dsc->ipsd_disk->d_fwheads = IPS_NORM_HEADS; 158 dsc->ipsd_disk->d_fwsectors = IPS_NORM_SECTORS; 159 } else { 160 dsc->ipsd_disk->d_fwheads = IPS_COMP_HEADS; 161 dsc->ipsd_disk->d_fwsectors = IPS_COMP_SECTORS; 162 } 163 dsc->ipsd_disk->d_sectorsize = IPS_BLKSIZE; 164 dsc->ipsd_disk->d_mediasize = (off_t)totalsectors * IPS_BLKSIZE; 165 dsc->ipsd_disk->d_unit = dsc->unit; 166 dsc->ipsd_disk->d_flags = 0; 167 disk_create(dsc->ipsd_disk, DISK_VERSION); 168 169 device_printf(dev, "Logical Drive (%dMB)\n", 170 dsc->sc->drives[dsc->disk_number].sector_count >> 11); 171 return 0; 172 } 173 174 static int ipsd_detach(device_t dev) 175 { 176 ipsdisk_softc_t *dsc; 177 178 DEVICE_PRINTF(2, dev,"in detach\n"); 179 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 180 if(dsc->state & IPS_DEV_OPEN) 181 return (EBUSY); 182 disk_destroy(dsc->ipsd_disk); 183 return 0; 184 } 185 186 static int 187 ipsd_dump(void *arg, void *virtual, off_t offset, size_t length) 188 { 189 ipsdisk_softc_t *dsc; 190 ips_softc_t *sc; 191 ips_command_t *command; 192 ips_io_cmd *command_struct; 193 struct disk *dp; 194 void *va; 195 off_t off; 196 size_t len; 197 int error = 0; 198 199 dp = arg; 200 dsc = dp->d_drv1; 201 202 if (dsc == NULL) 203 return (EINVAL); 204 sc = dsc->sc; 205 206 if (ips_get_free_cmd(sc, &command, 0) != 0) { 207 printf("ipsd: failed to get cmd for dump\n"); 208 return (ENOMEM); 209 } 210 211 command->data_dmatag = sc->sg_dmatag; 212 command->callback = ipsd_dump_block_complete; 213 214 command_struct = (ips_io_cmd *)command->command_buffer; 215 command_struct->id = command->id; 216 command_struct->drivenum= sc->drives[dsc->disk_number].drivenum; 217 218 off = offset; 219 va = virtual; 220 221 while (length > 0) { 222 len = 223 (length > IPS_MAX_IO_SIZE) ? IPS_MAX_IO_SIZE : length; 224 225 command_struct->lba = off / IPS_BLKSIZE; 226 227 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap, 228 va, len, ipsd_dump_map_sg, command, BUS_DMA_NOWAIT) != 0) { 229 error = EIO; 230 break; 231 } 232 if (COMMAND_ERROR(command)) { 233 error = EIO; 234 break; 235 } 236 237 length -= len; 238 off += len; 239 va = (uint8_t *)va + len; 240 } 241 242 ips_insert_free_cmd(command->sc, command); 243 return (error); 244 } 245 246 static void 247 ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 248 { 249 ips_softc_t *sc; 250 ips_command_t *command; 251 ips_sg_element_t *sg_list; 252 ips_io_cmd *command_struct; 253 int i, length; 254 255 command = (ips_command_t *)arg; 256 sc = command->sc; 257 length = 0; 258 259 if (error) { 260 printf("ipsd_dump_map_sg: error %d\n", error); 261 ips_set_error(command, error); 262 return; 263 } 264 265 command_struct = (ips_io_cmd *)command->command_buffer; 266 267 if (nsegs != 1) { 268 command_struct->segnum = nsegs; 269 sg_list = (ips_sg_element_t *)((uint8_t *) 270 command->command_buffer + IPS_COMMAND_LEN); 271 for (i = 0; i < nsegs; i++) { 272 sg_list[i].addr = segs[i].ds_addr; 273 sg_list[i].len = segs[i].ds_len; 274 length += segs[i].ds_len; 275 } 276 command_struct->buffaddr = 277 (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN; 278 command_struct->command = IPS_SG_WRITE_CMD; 279 } else { 280 command_struct->buffaddr = segs[0].ds_addr; 281 length = segs[0].ds_len; 282 command_struct->segnum = 0; 283 command_struct->command = IPS_WRITE_CMD; 284 } 285 286 length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE; 287 command_struct->length = length; 288 bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 289 BUS_DMASYNC_PREWRITE); 290 bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 291 BUS_DMASYNC_PREWRITE); 292 293 sc->ips_issue_cmd(command); 294 sc->ips_poll_cmd(command); 295 return; 296 } 297 298 static void 299 ipsd_dump_block_complete(ips_command_t *command) 300 { 301 302 if (COMMAND_ERROR(command)) 303 printf("ipsd_dump completion error= 0x%x\n", 304 command->status.value); 305 306 bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 307 BUS_DMASYNC_POSTWRITE); 308 bus_dmamap_unload(command->data_dmatag, command->data_dmamap); 309 } 310