sys/dev/ips/ips_disk.c

   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 __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 }