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