| 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 | * $FreeBSD: src/sys/dev/ips/ips_disk.c,v 1.4 2003/09/22 04:59:07 njl Exp $ |
| 28 | * $DragonFly: src/sys/dev/raid/ips/ips_disk.c,v 1.10 2006/09/10 01:26:35 dillon Exp $ |
| 29 | */ |
| 30 | |
| 31 | #include <sys/devicestat.h> |
| 32 | #include <dev/raid/ips/ips.h> |
| 33 | #include <dev/raid/ips/ips_disk.h> |
| 34 | #include <sys/stat.h> |
| 35 | |
| 36 | #include <vm/vm.h> |
| 37 | #include <vm/pmap.h> |
| 38 | #include <machine/md_var.h> |
| 39 | |
| 40 | static int ipsd_probe(device_t dev); |
| 41 | static int ipsd_attach(device_t dev); |
| 42 | static int ipsd_detach(device_t dev); |
| 43 | |
| 44 | #if 0 |
| 45 | static int ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length); |
| 46 | static void ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, |
| 47 | int error); |
| 48 | static void ipsd_dump_block_complete(ips_command_t *command); |
| 49 | #endif |
| 50 | |
| 51 | static d_open_t ipsd_open; |
| 52 | static d_close_t ipsd_close; |
| 53 | static d_strategy_t ipsd_strategy; |
| 54 | static d_dump_t ipsd_dump_helper; |
| 55 | |
| 56 | static struct dev_ops ipsd_ops = { |
| 57 | { "ipsd", IPSD_CDEV_MAJOR, D_DISK }, |
| 58 | .d_open = ipsd_open, |
| 59 | .d_close = ipsd_close, |
| 60 | .d_strategy = ipsd_strategy, |
| 61 | .d_read = physread, |
| 62 | .d_write = physwrite, |
| 63 | .d_dump = ipsd_dump_helper, |
| 64 | }; |
| 65 | |
| 66 | static device_method_t ipsd_methods[] = { |
| 67 | DEVMETHOD(device_probe, ipsd_probe), |
| 68 | DEVMETHOD(device_attach, ipsd_attach), |
| 69 | DEVMETHOD(device_detach, ipsd_detach), |
| 70 | { 0, 0 } |
| 71 | }; |
| 72 | |
| 73 | |
| 74 | static driver_t ipsd_driver = { |
| 75 | "ipsd", |
| 76 | ipsd_methods, |
| 77 | sizeof(ipsdisk_softc_t) |
| 78 | }; |
| 79 | |
| 80 | static devclass_t ipsd_devclass; |
| 81 | DRIVER_MODULE(ipsd, ips, ipsd_driver, ipsd_devclass, 0, 0); |
| 82 | |
| 83 | /* |
| 84 | * handle opening of disk device. It must set up all information about |
| 85 | * the geometry and size of the disk |
| 86 | */ |
| 87 | static int |
| 88 | ipsd_open(struct dev_open_args *ap) |
| 89 | { |
| 90 | cdev_t dev = ap->a_head.a_dev; |
| 91 | ipsdisk_softc_t *dsc = dev->si_drv1; |
| 92 | |
| 93 | if (dsc == NULL) |
| 94 | return (ENXIO); |
| 95 | dsc->state |= IPS_DEV_OPEN; |
| 96 | DEVICE_PRINTF(2, dsc->dev, "I'm open\n"); |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | static int |
| 101 | ipsd_close(struct dev_close_args *ap) |
| 102 | { |
| 103 | cdev_t dev = ap->a_head.a_dev; |
| 104 | ipsdisk_softc_t *dsc = dev->si_drv1; |
| 105 | |
| 106 | dsc->state &= ~IPS_DEV_OPEN; |
| 107 | DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n"); |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | /* ipsd_finish is called to clean up and return a completed IO request */ |
| 112 | void |
| 113 | ipsd_finish(struct bio *bio) |
| 114 | { |
| 115 | struct buf *bp = bio->bio_buf; |
| 116 | ipsdisk_softc_t *dsc; |
| 117 | |
| 118 | dsc = bio->bio_driver_info; |
| 119 | if (bp->b_flags & B_ERROR) { |
| 120 | device_printf(dsc->dev, "iobuf error %d\n", bp->b_error); |
| 121 | } else { |
| 122 | bp->b_resid = 0; |
| 123 | } |
| 124 | devstat_end_transaction_buf(&dsc->stats, bp); |
| 125 | biodone(bio); |
| 126 | ips_start_io_request(dsc->sc); |
| 127 | } |
| 128 | |
| 129 | |
| 130 | static int |
| 131 | ipsd_strategy(struct dev_strategy_args *ap) |
| 132 | { |
| 133 | cdev_t dev = ap->a_head.a_dev; |
| 134 | struct bio *bio = ap->a_bio; |
| 135 | ipsdisk_softc_t *dsc; |
| 136 | |
| 137 | dsc = dev->si_drv1; |
| 138 | DEVICE_PRINTF(8, dsc->dev, "in strategy\n"); |
| 139 | bio->bio_driver_info = dsc; |
| 140 | devstat_start_transaction(&dsc->stats); |
| 141 | lockmgr(&dsc->sc->queue_lock, LK_EXCLUSIVE|LK_RETRY); |
| 142 | bioq_insert_tail(&dsc->sc->bio_queue, bio); |
| 143 | ips_start_io_request(dsc->sc); |
| 144 | lockmgr(&dsc->sc->queue_lock, LK_RELEASE); |
| 145 | return(0); |
| 146 | } |
| 147 | |
| 148 | static int |
| 149 | ipsd_probe(device_t dev) |
| 150 | { |
| 151 | DEVICE_PRINTF(2, dev, "in probe\n"); |
| 152 | device_set_desc(dev, "Logical Drive"); |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | static int |
| 157 | ipsd_attach(device_t dev) |
| 158 | { |
| 159 | device_t adapter; |
| 160 | ipsdisk_softc_t *dsc; |
| 161 | struct disklabel *label; |
| 162 | u_int totalsectors; |
| 163 | u_int nheads, nsectors; |
| 164 | |
| 165 | DEVICE_PRINTF(2, dev, "in attach\n"); |
| 166 | dsc = (ipsdisk_softc_t *)device_get_softc(dev); |
| 167 | bzero(dsc, sizeof(ipsdisk_softc_t)); |
| 168 | adapter = device_get_parent(dev); |
| 169 | dsc->dev = dev; |
| 170 | dsc->sc = device_get_softc(adapter); |
| 171 | dsc->unit = device_get_unit(dev); |
| 172 | dsc->disk_number = (uintptr_t) device_get_ivars(dev); |
| 173 | totalsectors = dsc->sc->drives[dsc->disk_number].sector_count; |
| 174 | if ((totalsectors > 0x400000) && |
| 175 | ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) { |
| 176 | nheads = IPS_NORM_HEADS; |
| 177 | nsectors = IPS_NORM_SECTORS; |
| 178 | } else { |
| 179 | nheads = IPS_COMP_HEADS; |
| 180 | nsectors = IPS_COMP_SECTORS; |
| 181 | } |
| 182 | devstat_add_entry(&dsc->stats, "ipsd", dsc->unit, DEV_BSIZE, |
| 183 | DEVSTAT_NO_ORDERED_TAGS, |
| 184 | DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_SCSI, |
| 185 | DEVSTAT_PRIORITY_DISK); |
| 186 | dsc->ipsd_dev_t = disk_create(dsc->unit, &dsc->ipsd_disk, 0, &ipsd_ops); |
| 187 | dsc->ipsd_dev_t->si_drv1 = dsc; |
| 188 | dsc->ipsd_dev_t->si_iosize_max = IPS_MAX_IO_SIZE; |
| 189 | label = &dsc->ipsd_disk.d_label; |
| 190 | bzero(label, sizeof(*label)); |
| 191 | label->d_ntracks = nheads; |
| 192 | label->d_nsectors = nsectors; |
| 193 | label->d_type = DTYPE_ESDI; |
| 194 | label->d_secsize = IPS_BLKSIZE; |
| 195 | label->d_ncylinders = totalsectors / nheads / nsectors; |
| 196 | label->d_secpercyl = nsectors / nheads; |
| 197 | label->d_secperunit = totalsectors; |
| 198 | device_printf(dev, "Logical Drive (%dMB)\n", |
| 199 | dsc->sc->drives[dsc->disk_number].sector_count >> 11); |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | static int |
| 204 | ipsd_detach(device_t dev) |
| 205 | { |
| 206 | ipsdisk_softc_t *dsc; |
| 207 | |
| 208 | DEVICE_PRINTF(2, dev, "in detach\n"); |
| 209 | dsc = (ipsdisk_softc_t *)device_get_softc(dev); |
| 210 | if (dsc->state & IPS_DEV_OPEN) |
| 211 | return (EBUSY); |
| 212 | devstat_remove_entry(&dsc->stats); |
| 213 | disk_destroy(&dsc->ipsd_disk); |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | static int |
| 218 | ipsd_dump_helper(struct dev_dump_args *ap) |
| 219 | { |
| 220 | printf("dump support for IPS not yet working, will not dump\n"); |
| 221 | return (ENODEV); |
| 222 | |
| 223 | #if 0 |
| 224 | long blkcnt; |
| 225 | caddr_t va; |
| 226 | vm_offset_t addr, a; |
| 227 | int dumppages = MAXDUMPPGS; |
| 228 | int i; |
| 229 | |
| 230 | addr = 0; |
| 231 | blkcnt = howmany(PAGE_SIZE, secsize); |
| 232 | while (count > 0) { |
| 233 | va = NULL; |
| 234 | if (count / blkcnt < dumppages) |
| 235 | dumppages = count / blkcnt; |
| 236 | for (i = 0; i < dumppages; i++) { |
| 237 | a = addr + (i * PAGE_SIZE); |
| 238 | if (!is_physical_memory(a)) |
| 239 | a = 0; |
| 240 | va = pmap_kenter_temporary(trunc_page(a), i); |
| 241 | } |
| 242 | |
| 243 | ipsd_dump(dev, va, 0, blkno, PAGE_SIZE * dumppages); |
| 244 | if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0) |
| 245 | return (EINTR); |
| 246 | blkno += blkcnt * dumppages; |
| 247 | count -= blkcnt * dumppages; |
| 248 | addr += PAGE_SIZE * dumppages; |
| 249 | } |
| 250 | return (0); |
| 251 | #endif |
| 252 | } |
| 253 | |
| 254 | #if 0 |
| 255 | |
| 256 | static int |
| 257 | ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, |
| 258 | size_t length) |
| 259 | { |
| 260 | cdev_t dev = arg; |
| 261 | ips_softc_t *sc; |
| 262 | ips_command_t *command; |
| 263 | ips_io_cmd *command_struct; |
| 264 | ipsdisk_softc_t *dsc; |
| 265 | off_t off; |
| 266 | uint8_t *va; |
| 267 | int len; |
| 268 | int error = 0; |
| 269 | |
| 270 | dsc = dev->si_drv1; |
| 271 | if (dsc == NULL) |
| 272 | return (EINVAL); |
| 273 | sc = dsc->sc; |
| 274 | |
| 275 | if (ips_get_free_cmd(sc, &command, 0) != 0) { |
| 276 | printf("ipsd: failed to get cmd for dump\n"); |
| 277 | return (ENOMEM); |
| 278 | } |
| 279 | |
| 280 | command->data_dmatag = sc->sg_dmatag; |
| 281 | command->callback = ipsd_dump_block_complete; |
| 282 | |
| 283 | command_struct = (ips_io_cmd *)command->command_buffer; |
| 284 | command_struct->id = command->id; |
| 285 | command_struct->drivenum = sc->drives[dsc->disk_number].drivenum; |
| 286 | |
| 287 | off = offset; |
| 288 | va = virtual; |
| 289 | |
| 290 | while (length > 0) { |
| 291 | len = length > IPS_MAX_IO_SIZE ? IPS_MAX_IO_SIZE : length; |
| 292 | command_struct->lba = off / IPS_BLKSIZE; |
| 293 | if (bus_dmamap_load(command->data_dmatag, command->data_dmamap, |
| 294 | va, len, ipsd_dump_map_sg, command, 0) != 0) { |
| 295 | error = EIO; |
| 296 | break; |
| 297 | } |
| 298 | if (COMMAND_ERROR(&command->status)) { |
| 299 | error = EIO; |
| 300 | break; |
| 301 | } |
| 302 | |
| 303 | length -= len; |
| 304 | off += len; |
| 305 | va += len; |
| 306 | } |
| 307 | ips_insert_free_cmd(command->sc, command); |
| 308 | return(error); |
| 309 | } |
| 310 | |
| 311 | static void |
| 312 | ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error) |
| 313 | { |
| 314 | ips_softc_t *sc; |
| 315 | ips_command_t *command; |
| 316 | ips_sg_element_t *sg_list; |
| 317 | ips_io_cmd *command_struct; |
| 318 | int i, length; |
| 319 | |
| 320 | command = (ips_command_t *)arg; |
| 321 | sc = command->sc; |
| 322 | length = 0; |
| 323 | |
| 324 | if (error) { |
| 325 | printf("ipsd_dump_map_sg: error %d\n", error); |
| 326 | command->status.value = IPS_ERROR_STATUS; |
| 327 | return; |
| 328 | } |
| 329 | |
| 330 | command_struct = (ips_io_cmd *)command->command_buffer; |
| 331 | |
| 332 | if (nsegs != 1) { |
| 333 | command_struct->segnum = nsegs; |
| 334 | sg_list = (ips_sg_element_t *)((uint8_t *) |
| 335 | command->command_buffer + IPS_COMMAND_LEN); |
| 336 | for (i = 0; i < nsegs; i++) { |
| 337 | sg_list[i].addr = segs[i].ds_addr; |
| 338 | sg_list[i].len = segs[i].ds_len; |
| 339 | length += segs[i].ds_len; |
| 340 | } |
| 341 | command_struct->buffaddr = |
| 342 | (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN; |
| 343 | command_struct->command = IPS_SG_WRITE_CMD; |
| 344 | } else { |
| 345 | command_struct->buffaddr = segs[0].ds_addr; |
| 346 | length = segs[0].ds_len; |
| 347 | command_struct->segnum = 0; |
| 348 | command_struct->command = IPS_WRITE_CMD; |
| 349 | } |
| 350 | |
| 351 | length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE; |
| 352 | command_struct->length = length; |
| 353 | bus_dmamap_sync(sc->command_dmatag, command->command_dmamap, |
| 354 | BUS_DMASYNC_PREWRITE); |
| 355 | bus_dmamap_sync(command->data_dmatag, command->data_dmamap, |
| 356 | BUS_DMASYNC_PREWRITE); |
| 357 | |
| 358 | sc->ips_issue_cmd(command); |
| 359 | sc->ips_poll_cmd(command); |
| 360 | return; |
| 361 | } |
| 362 | |
| 363 | static void |
| 364 | ipsd_dump_block_complete(ips_command_t *command) |
| 365 | { |
| 366 | if (COMMAND_ERROR(&command->status)) { |
| 367 | printf("ipsd_dump completion error= 0x%x\n", |
| 368 | command->status.value); |
| 369 | } |
| 370 | bus_dmamap_sync(command->data_dmatag, command->data_dmamap, |
| 371 | BUS_DMASYNC_POSTWRITE); |
| 372 | bus_dmamap_unload(command->data_dmatag, command->data_dmamap); |
| 373 | } |
| 374 | |
| 375 | #endif |