1 /*- 2 * Written by: David Jeffery 3 * Copyright (c) 2002 Adaptec Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 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, vm_offset_t physical, 41 off_t offset, size_t length); 42 static void ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, 43 int error); 44 static void ipsd_dump_block_complete(ips_command_t *command); 45 46 static disk_open_t ipsd_open; 47 static disk_close_t ipsd_close; 48 static disk_strategy_t ipsd_strategy; 49 50 static device_method_t ipsd_methods[] = { 51 DEVMETHOD(device_probe, ipsd_probe), 52 DEVMETHOD(device_attach, ipsd_attach), 53 DEVMETHOD(device_detach, ipsd_detach), 54 { 0, 0 } 55 }; 56 57 static driver_t ipsd_driver = { 58 "ipsd", 59 ipsd_methods, 60 sizeof(ipsdisk_softc_t) 61 }; 62 63 static devclass_t ipsd_devclass; 64 DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, 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 mtx_lock(&dsc->sc->queue_mtx); 111 bioq_insert_tail(&dsc->sc->queue, iobuf); 112 ips_start_io_request(dsc->sc); 113 mtx_unlock(&dsc->sc->queue_mtx); 114 } 115 116 static int ipsd_probe(device_t dev) 117 { 118 DEVICE_PRINTF(2,dev, "in probe\n"); 119 device_set_desc(dev, "Logical Drive"); 120 return 0; 121 } 122 123 static int ipsd_attach(device_t dev) 124 { 125 device_t adapter; 126 ipsdisk_softc_t *dsc; 127 u_int totalsectors; 128 129 DEVICE_PRINTF(2,dev, "in attach\n"); 130 131 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 132 bzero(dsc, sizeof(ipsdisk_softc_t)); 133 adapter = device_get_parent(dev); 134 dsc->dev = dev; 135 dsc->sc = device_get_softc(adapter); 136 dsc->unit = device_get_unit(dev); 137 dsc->disk_number = (uintptr_t) device_get_ivars(dev); 138 dsc->ipsd_disk = disk_alloc(); 139 dsc->ipsd_disk->d_drv1 = dsc; 140 dsc->ipsd_disk->d_name = "ipsd"; 141 dsc->ipsd_disk->d_maxsize = IPS_MAX_IO_SIZE; 142 dsc->ipsd_disk->d_open = ipsd_open; 143 dsc->ipsd_disk->d_close = ipsd_close; 144 dsc->ipsd_disk->d_strategy = ipsd_strategy; 145 dsc->ipsd_disk->d_dump = ipsd_dump; 146 147 totalsectors = dsc->sc->drives[dsc->disk_number].sector_count; 148 if ((totalsectors > 0x400000) && 149 ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) { 150 dsc->ipsd_disk->d_fwheads = IPS_NORM_HEADS; 151 dsc->ipsd_disk->d_fwsectors = IPS_NORM_SECTORS; 152 } else { 153 dsc->ipsd_disk->d_fwheads = IPS_COMP_HEADS; 154 dsc->ipsd_disk->d_fwsectors = IPS_COMP_SECTORS; 155 } 156 dsc->ipsd_disk->d_sectorsize = IPS_BLKSIZE; 157 dsc->ipsd_disk->d_mediasize = (off_t)totalsectors * IPS_BLKSIZE; 158 dsc->ipsd_disk->d_unit = dsc->unit; 159 dsc->ipsd_disk->d_flags = 0; 160 disk_create(dsc->ipsd_disk, DISK_VERSION); 161 162 device_printf(dev, "Logical Drive (%dMB)\n", 163 dsc->sc->drives[dsc->disk_number].sector_count >> 11); 164 return 0; 165 } 166 167 static int ipsd_detach(device_t dev) 168 { 169 ipsdisk_softc_t *dsc; 170 171 DEVICE_PRINTF(2, dev,"in detach\n"); 172 dsc = (ipsdisk_softc_t *)device_get_softc(dev); 173 if(dsc->state & IPS_DEV_OPEN) 174 return (EBUSY); 175 disk_destroy(dsc->ipsd_disk); 176 return 0; 177 } 178 179 static int 180 ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, 181 size_t length) 182 { 183 ipsdisk_softc_t *dsc; 184 ips_softc_t *sc; 185 ips_command_t *command; 186 ips_io_cmd *command_struct; 187 struct disk *dp; 188 void *va; 189 off_t off; 190 size_t len; 191 int error = 0; 192 193 dp = arg; 194 dsc = dp->d_drv1; 195 196 if (dsc == NULL) 197 return (EINVAL); 198 sc = dsc->sc; 199 200 if (ips_get_free_cmd(sc, &command, 0) != 0) { 201 printf("ipsd: failed to get cmd for dump\n"); 202 return (ENOMEM); 203 } 204 205 command->data_dmatag = sc->sg_dmatag; 206 command->callback = ipsd_dump_block_complete; 207 208 command_struct = (ips_io_cmd *)command->command_buffer; 209 command_struct->id = command->id; 210 command_struct->drivenum= sc->drives[dsc->disk_number].drivenum; 211 212 off = offset; 213 va = virtual; 214 215 while (length > 0) { 216 len = 217 (length > IPS_MAX_IO_SIZE) ? IPS_MAX_IO_SIZE : length; 218 219 command_struct->lba = off / IPS_BLKSIZE; 220 221 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap, 222 va, len, ipsd_dump_map_sg, command, BUS_DMA_NOWAIT) != 0) { 223 error = EIO; 224 break; 225 } 226 if (COMMAND_ERROR(command)) { 227 error = EIO; 228 break; 229 } 230 231 length -= len; 232 off += len; 233 va = (uint8_t *)va + len; 234 } 235 236 ips_insert_free_cmd(command->sc, command); 237 return (error); 238 } 239 240 static void 241 ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 242 { 243 ips_softc_t *sc; 244 ips_command_t *command; 245 ips_sg_element_t *sg_list; 246 ips_io_cmd *command_struct; 247 int i, length; 248 249 command = (ips_command_t *)arg; 250 sc = command->sc; 251 length = 0; 252 253 if (error) { 254 printf("ipsd_dump_map_sg: error %d\n", error); 255 ips_set_error(command, error); 256 return; 257 } 258 259 command_struct = (ips_io_cmd *)command->command_buffer; 260 261 if (nsegs != 1) { 262 command_struct->segnum = nsegs; 263 sg_list = (ips_sg_element_t *)((uint8_t *) 264 command->command_buffer + IPS_COMMAND_LEN); 265 for (i = 0; i < nsegs; i++) { 266 sg_list[i].addr = segs[i].ds_addr; 267 sg_list[i].len = segs[i].ds_len; 268 length += segs[i].ds_len; 269 } 270 command_struct->buffaddr = 271 (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN; 272 command_struct->command = IPS_SG_WRITE_CMD; 273 } else { 274 command_struct->buffaddr = segs[0].ds_addr; 275 length = segs[0].ds_len; 276 command_struct->segnum = 0; 277 command_struct->command = IPS_WRITE_CMD; 278 } 279 280 length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE; 281 command_struct->length = length; 282 bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, 283 BUS_DMASYNC_PREWRITE); 284 bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 285 BUS_DMASYNC_PREWRITE); 286 287 sc->ips_issue_cmd(command); 288 sc->ips_poll_cmd(command); 289 return; 290 } 291 292 static void 293 ipsd_dump_block_complete(ips_command_t *command) 294 { 295 296 if (COMMAND_ERROR(command)) 297 printf("ipsd_dump completion error= 0x%x\n", 298 command->status.value); 299 300 bus_dmamap_sync(command->data_dmatag, command->data_dmamap, 301 BUS_DMASYNC_POSTWRITE); 302 bus_dmamap_unload(command->data_dmatag, command->data_dmamap); 303 } 304