1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 #include <dev/ips/ipsreg.h> 32 #include <dev/ips/ips.h> 33 #include <dev/ips/ips_disk.h> 34 #include <sys/stat.h> 35 36 static int ipsd_probe(device_t dev); 37 static int ipsd_attach(device_t dev); 38 static int ipsd_detach(device_t dev); 39 40 static int ipsd_dump(void *arg, void *virtual, off_t offset, size_t length); 41 static void ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, 42 int error); 43 static void ipsd_dump_block_complete(ips_command_t *command); 44 45 static disk_open_t ipsd_open; 46 static disk_close_t ipsd_close; 47 static disk_strategy_t ipsd_strategy; 48 49 static device_method_t ipsd_methods[] = { 50 DEVMETHOD(device_probe, ipsd_probe), 51 DEVMETHOD(device_attach, ipsd_attach), 52 DEVMETHOD(device_detach, ipsd_detach), 53 { 0, 0 } 54 }; 55 56 static driver_t ipsd_driver = { 57 "ipsd", 58 ipsd_methods, 59 sizeof(ipsdisk_softc_t) 60 }; 61 62 DRIVER_MODULE(ipsd, ips, ipsd_driver, 0, 0); 63 64 /* handle opening of disk device. It must set up all 65 information about the geometry and size of the disk */ 66 static int ipsd_open(struct disk *dp) 67 { 68 ipsdisk_softc_t *dsc = dp->d_drv1; 69 70 dsc->state |= IPS_DEV_OPEN; 71 DEVICE_PRINTF(2, dsc->dev, "I'm open\n"); 72 return 0; 73 } 74 75 static int ipsd_close(struct disk *dp) 76 { 77 ipsdisk_softc_t *dsc = dp->d_drv1; 78 dsc->state &= ~IPS_DEV_OPEN; 79 DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n"); 80 return 0; 81 } 82 83 /* ipsd_finish is called to clean up and return a completed IO request */ 84 void ipsd_finish(struct bio *iobuf) 85 { 86 ipsdisk_softc_t *dsc; 87 dsc = iobuf->bio_disk->d_drv1; 88 89 if (iobuf->bio_flags & BIO_ERROR) { 90 ipsdisk_softc_t *dsc; 91 dsc = iobuf->bio_disk->d_drv1; 92 device_printf(dsc->dev, "iobuf error %d\n", iobuf->bio_error); 93 } else 94 iobuf->bio_resid = 0; 95 96 biodone(iobuf); 97 ips_start_io_request(dsc->sc); 98 } 99 100 101 static void ipsd_strategy(struct bio *iobuf) 102 { 103 ipsdisk_softc_t *dsc; 104 105 dsc = iobuf->bio_disk->d_drv1; 106 DEVICE_PRINTF(8,dsc->dev,"in strategy\n"); 107 iobuf->bio_driver1 = (void *)(uintptr_t)dsc->sc->drives[dsc->disk_number].drivenum; 108 109 if ((iobuf->bio_cmd != BIO_READ) && 110 (iobuf->bio_cmd != BIO_WRITE)) { 111 biofinish(iobuf, NULL, EOPNOTSUPP); 112 return; 113 } 114 115 mtx_lock(&dsc->sc->queue_mtx); 116 bioq_insert_tail(&dsc->sc->queue, iobuf); 117 ips_start_io_request(dsc->sc); 118 mtx_unlock(&dsc->sc->queue_mtx); 119 } 120 121 static int ipsd_probe(device_t dev) 122 { 123 DEVICE_PRINTF(2,dev, "in probe\n"); 124 device_set_desc(dev, "Logical Drive"); 125 return 0; 126 } 127 128 static int ipsd_attach(device_t dev) 129 { 130 device_t adapter; 131 ipsdisk_softc_t *dsc; 132 u_int totalsectors; 133 134 DEVICE_PRINTF(2,dev, "in attach\n"); 135 136 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 137 bzero(dsc, sizeof(ipsdisk_softc_t)); 138 adapter = device_get_parent(dev); 139 dsc->dev = dev; 140 dsc->sc = device_get_softc(adapter); 141 dsc->unit = device_get_unit(dev); 142 dsc->disk_number = (uintptr_t) device_get_ivars(dev); 143 dsc->ipsd_disk = disk_alloc(); 144 dsc->ipsd_disk->d_drv1 = dsc; 145 dsc->ipsd_disk->d_name = "ipsd"; 146 dsc->ipsd_disk->d_maxsize = IPS_MAX_IO_SIZE; 147 dsc->ipsd_disk->d_open = ipsd_open; 148 dsc->ipsd_disk->d_close = ipsd_close; 149 dsc->ipsd_disk->d_strategy = ipsd_strategy; 150 dsc->ipsd_disk->d_dump = ipsd_dump; 151 152 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count; 153 if ((totalsectors > 0x400000) && 154 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) { 155 dsc->ipsd_disk->d_fwheads = IPS_NORM_HEADS; 156 dsc->ipsd_disk->d_fwsectors = IPS_NORM_SECTORS; 157 } else { 158 dsc->ipsd_disk->d_fwheads = IPS_COMP_HEADS; 159 dsc->ipsd_disk->d_fwsectors = IPS_COMP_SECTORS; 160 } 161 dsc->ipsd_disk->d_sectorsize = IPS_BLKSIZE; 162 dsc->ipsd_disk->d_mediasize = (off_t)totalsectors * IPS_BLKSIZE; 163 dsc->ipsd_disk->d_unit = dsc->unit; 164 dsc->ipsd_disk->d_flags = 0; 165 disk_create(dsc->ipsd_disk, DISK_VERSION); 166 167 device_printf(dev, "Logical Drive (%dMB)\n", 168 dsc->sc->drives[dsc->disk_number].sector_count >> 11); 169 return 0; 170 } 171 172 static int ipsd_detach(device_t dev) 173 { 174 ipsdisk_softc_t *dsc; 175 176 DEVICE_PRINTF(2, dev,"in detach\n"); 177 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 178 if(dsc->state & IPS_DEV_OPEN) 179 return (EBUSY); 180 disk_destroy(dsc->ipsd_disk); 181 return 0; 182 } 183 184 static int 185 ipsd_dump(void *arg, void *virtual, off_t offset, size_t length) 186 { 187 ipsdisk_softc_t *dsc; 188 ips_softc_t *sc; 189 ips_command_t *command; 190 ips_io_cmd *command_struct; 191 struct disk *dp; 192 void *va; 193 off_t off; 194 size_t len; 195 int error = 0; 196 197 dp = arg; 198 dsc = dp->d_drv1; 199 200 if (dsc == NULL) 201 return (EINVAL); 202 sc = dsc->sc; 203 204 if (ips_get_free_cmd(sc, &command, 0) != 0) { 205 printf("ipsd: failed to get cmd for dump\n"); 206 return (ENOMEM); 207 } 208 209 command->data_dmatag = sc->sg_dmatag; 210 command->callback = ipsd_dump_block_complete; 211 212 command_struct = (ips_io_cmd *)command->command_buffer; 213 command_struct->id = command->id; 214 command_struct->drivenum= sc->drives[dsc->disk_number].drivenum; 215 216 off = offset; 217 va = virtual; 218 219 while (length > 0) { 220 len = 221 (length > IPS_MAX_IO_SIZE) ? IPS_MAX_IO_SIZE : length; 222 223 command_struct->lba = off / IPS_BLKSIZE; 224 225 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap, 226 va, len, ipsd_dump_map_sg, command, BUS_DMA_NOWAIT) != 0) { 227 error = EIO; 228 break; 229 } 230 if (COMMAND_ERROR(command)) { 231 error = EIO; 232 break; 233 } 234 235 length -= len; 236 off += len; 237 va = (uint8_t *)va + len; 238 } 239 240 ips_insert_free_cmd(command->sc, command); 241 return (error); 242 } 243 244 static void 245 ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 246 { 247 ips_softc_t *sc; 248 ips_command_t *command; 249 ips_sg_element_t *sg_list; 250 ips_io_cmd *command_struct; 251 int i, length; 252 253 command = (ips_command_t *)arg; 254 sc = command->sc; 255 length = 0; 256 257 if (error) { 258 printf("ipsd_dump_map_sg: error %d\n", error); 259 ips_set_error(command, error); 260 return; 261 } 262 263 command_struct = (ips_io_cmd *)command->command_buffer; 264 265 if (nsegs != 1) { 266 command_struct->segnum = nsegs; 267 sg_list = (ips_sg_element_t *)((uint8_t *) 268 command->command_buffer + IPS_COMMAND_LEN); 269 for (i = 0; i < nsegs; i++) { 270 sg_list[i].addr = segs[i].ds_addr; 271 sg_list[i].len = segs[i].ds_len; 272 length += segs[i].ds_len; 273 } 274 command_struct->buffaddr = 275 (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN; 276 command_struct->command = IPS_SG_WRITE_CMD; 277 } else { 278 command_struct->buffaddr = segs[0].ds_addr; 279 length = segs[0].ds_len; 280 command_struct->segnum = 0; 281 command_struct->command = IPS_WRITE_CMD; 282 } 283 284 length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE; 285 command_struct->length = length; 286 bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 287 BUS_DMASYNC_PREWRITE); 288 bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 289 BUS_DMASYNC_PREWRITE); 290 291 sc->ips_issue_cmd(command); 292 sc->ips_poll_cmd(command); 293 return; 294 } 295 296 static void 297 ipsd_dump_block_complete(ips_command_t *command) 298 { 299 300 if (COMMAND_ERROR(command)) 301 printf("ipsd_dump completion error= 0x%x\n", 302 command->status.value); 303 304 bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 305 BUS_DMASYNC_POSTWRITE); 306 bus_dmamap_unload(command->data_dmatag, command->data_dmamap); 307 } 308