sys/dev/ips/ips_disk.c

   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 DRIVER_MODULE(ipsd, ips, ipsd_driver, 0, 0);
  66
  67 /* handle opening of disk device.  It must set up all
  68    information about the geometry and size of the disk */
  69 static int ipsd_open(struct disk *dp)
  70 {
  71         ipsdisk_softc_t *dsc = dp->d_drv1;
  72
  73         dsc->state |= IPS_DEV_OPEN;
  74         DEVICE_PRINTF(2, dsc->dev, "I'm open\n");
  75         return 0;
  76 }
  77
  78 static int ipsd_close(struct disk *dp)
  79 {
  80         ipsdisk_softc_t *dsc = dp->d_drv1;
  81         dsc->state &= ~IPS_DEV_OPEN;
  82         DEVICE_PRINTF(2, dsc->dev, "I'm closed for the day\n");
  83         return 0;
  84 }
  85
  86 /* ipsd_finish is called to clean up and return a completed IO request */
  87 void ipsd_finish(struct bio *iobuf)
  88 {
  89         ipsdisk_softc_t *dsc;
  90         dsc = iobuf->bio_disk->d_drv1;
  91
  92         if (iobuf->bio_flags & BIO_ERROR) {
  93                 ipsdisk_softc_t *dsc;
  94                 dsc = iobuf->bio_disk->d_drv1;
  95                 device_printf(dsc->dev, "iobuf error %d\n", iobuf->bio_error);
  96         } else
  97                 iobuf->bio_resid = 0;
  98
  99         biodone(iobuf);
 100         ips_start_io_request(dsc->sc);
 101 }
 102
 103
 104 static void ipsd_strategy(struct bio *iobuf)
 105 {
 106         ipsdisk_softc_t *dsc;
 107
 108         dsc = iobuf->bio_disk->d_drv1;
 109         DEVICE_PRINTF(8,dsc->dev,"in strategy\n");
 110         iobuf->bio_driver1 = (void *)(uintptr_t)dsc->sc->drives[dsc->disk_number].drivenum;
 111
 112         if ((iobuf->bio_cmd != BIO_READ) &&
 113             (iobuf->bio_cmd != BIO_WRITE)) {
 114                 biofinish(iobuf, NULL, EOPNOTSUPP);
 115                 return;
 116         }
 117
 118         mtx_lock(&dsc->sc->queue_mtx);
 119         bioq_insert_tail(&dsc->sc->queue, iobuf);
 120         ips_start_io_request(dsc->sc);
 121         mtx_unlock(&dsc->sc->queue_mtx);
 122 }
 123
 124 static int ipsd_probe(device_t dev)
 125 {
 126         DEVICE_PRINTF(2,dev, "in probe\n");
 127         device_set_desc(dev, "Logical Drive");
 128         return 0;
 129 }
 130
 131 static int ipsd_attach(device_t dev)
 132 {
 133         device_t adapter;
 134         ipsdisk_softc_t *dsc;
 135         u_int totalsectors;
 136
 137         DEVICE_PRINTF(2,dev, "in attach\n");
 138
 139         dsc = (ipsdisk_softc_t *)device_get_softc(dev);
 140         bzero(dsc, sizeof(ipsdisk_softc_t));
 141         adapter = device_get_parent(dev);
 142         dsc->dev = dev;
 143         dsc->sc = device_get_softc(adapter);
 144         dsc->unit = device_get_unit(dev);
 145         dsc->disk_number = (uintptr_t) device_get_ivars(dev);
 146         dsc->ipsd_disk = disk_alloc();
 147         dsc->ipsd_disk->d_drv1 = dsc;
 148         dsc->ipsd_disk->d_name = "ipsd";
 149         dsc->ipsd_disk->d_maxsize = IPS_MAX_IO_SIZE;
 150         dsc->ipsd_disk->d_open = ipsd_open;
 151         dsc->ipsd_disk->d_close = ipsd_close;
 152         dsc->ipsd_disk->d_strategy = ipsd_strategy;
 153         dsc->ipsd_disk->d_dump = ipsd_dump;
 154
 155         totalsectors = dsc->sc->drives[dsc->disk_number].sector_count;
 156         if ((totalsectors > 0x400000) &&
 157                         ((dsc->sc->adapter_info.miscflags & 0x8) == 0)) {
 158                 dsc->ipsd_disk->d_fwheads = IPS_NORM_HEADS;
 159                 dsc->ipsd_disk->d_fwsectors = IPS_NORM_SECTORS;
 160         } else {
 161                 dsc->ipsd_disk->d_fwheads = IPS_COMP_HEADS;
 162                 dsc->ipsd_disk->d_fwsectors = IPS_COMP_SECTORS;
 163         }
 164         dsc->ipsd_disk->d_sectorsize = IPS_BLKSIZE;
 165         dsc->ipsd_disk->d_mediasize = (off_t)totalsectors * IPS_BLKSIZE;
 166         dsc->ipsd_disk->d_unit = dsc->unit;
 167         dsc->ipsd_disk->d_flags = 0;
 168         disk_create(dsc->ipsd_disk, DISK_VERSION);
 169
 170         device_printf(dev, "Logical Drive  (%dMB)\n",
 171                       dsc->sc->drives[dsc->disk_number].sector_count >> 11);
 172         return 0;
 173 }
 174
 175 static int ipsd_detach(device_t dev)
 176 {
 177         ipsdisk_softc_t *dsc;
 178
 179         DEVICE_PRINTF(2, dev,"in detach\n");
 180         dsc = (ipsdisk_softc_t *)device_get_softc(dev);
 181         if(dsc->state & IPS_DEV_OPEN)
 182                 return (EBUSY);
 183         disk_destroy(dsc->ipsd_disk);
 184         return 0;
 185 }
 186
 187 static int
 188 ipsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset,
 189           size_t length)
 190 {
 191         ipsdisk_softc_t *dsc;
 192         ips_softc_t *sc;
 193         ips_command_t *command;
 194         ips_io_cmd *command_struct;
 195         struct disk *dp;
 196         void *va;
 197         off_t off;
 198         size_t len;
 199         int error = 0;
 200
 201         dp = arg;
 202         dsc = dp->d_drv1;
 203
 204         if (dsc == NULL)
 205                 return (EINVAL);
 206         sc = dsc->sc;
 207
 208         if (ips_get_free_cmd(sc, &command, 0) != 0) {
 209                 printf("ipsd: failed to get cmd for dump\n");
 210                 return (ENOMEM);
 211         }
 212
 213         command->data_dmatag = sc->sg_dmatag;
 214         command->callback = ipsd_dump_block_complete;
 215
 216         command_struct = (ips_io_cmd *)command->command_buffer;
 217         command_struct->id = command->id;
 218         command_struct->drivenum= sc->drives[dsc->disk_number].drivenum;
 219
 220         off = offset;
 221         va = virtual;
 222
 223         while (length > 0) {
 224                 len =
 225                     (length > IPS_MAX_IO_SIZE) ? IPS_MAX_IO_SIZE : length;
 226
 227                 command_struct->lba = off / IPS_BLKSIZE;
 228
 229                 if (bus_dmamap_load(command->data_dmatag, command->data_dmamap,
 230                     va, len, ipsd_dump_map_sg, command, BUS_DMA_NOWAIT) != 0) {
 231                         error = EIO;
 232                         break;
 233                 }
 234                 if (COMMAND_ERROR(command)) {
 235                         error = EIO;
 236                         break;
 237                 }
 238
 239                 length -= len;
 240                 off += len;
 241                 va = (uint8_t *)va + len;
 242         }
 243
 244         ips_insert_free_cmd(command->sc, command);
 245         return (error);
 246 }
 247
 248 static void
 249 ipsd_dump_map_sg(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
 250 {
 251         ips_softc_t *sc;
 252         ips_command_t *command;
 253         ips_sg_element_t *sg_list;
 254         ips_io_cmd *command_struct;
 255         int i, length;
 256
 257         command = (ips_command_t *)arg;
 258         sc = command->sc;
 259         length = 0;
 260
 261         if (error) {
 262                 printf("ipsd_dump_map_sg: error %d\n", error);
 263                 ips_set_error(command, error);
 264                 return;
 265         }
 266
 267         command_struct = (ips_io_cmd *)command->command_buffer;
 268
 269         if (nsegs != 1) {
 270                 command_struct->segnum = nsegs;
 271                 sg_list = (ips_sg_element_t *)((uint8_t *)
 272                     command->command_buffer + IPS_COMMAND_LEN);
 273                 for (i = 0; i < nsegs; i++) {
 274                         sg_list[i].addr = segs[i].ds_addr;
 275                         sg_list[i].len = segs[i].ds_len;
 276                         length += segs[i].ds_len;
 277                 }
 278                 command_struct->buffaddr =
 279                     (uint32_t)command->command_phys_addr + IPS_COMMAND_LEN;
 280                 command_struct->command = IPS_SG_WRITE_CMD;
 281         } else {
 282                 command_struct->buffaddr = segs[0].ds_addr;
 283                 length = segs[0].ds_len;
 284                 command_struct->segnum = 0;
 285                 command_struct->command = IPS_WRITE_CMD;
 286         }
 287
 288         length = (length + IPS_BLKSIZE - 1) / IPS_BLKSIZE;
 289         command_struct->length = length;
 290         bus_dmamap_sync(sc->command_dmatag, command->command_dmamap,
 291             BUS_DMASYNC_PREWRITE);
 292         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 293             BUS_DMASYNC_PREWRITE);
 294
 295         sc->ips_issue_cmd(command);
 296         sc->ips_poll_cmd(command);
 297         return;
 298 }
 299
 300 static void
 301 ipsd_dump_block_complete(ips_command_t *command)
 302 {
 303
 304         if (COMMAND_ERROR(command))
 305                 printf("ipsd_dump completion error= 0x%x\n",
 306                     command->status.value);
 307
 308         bus_dmamap_sync(command->data_dmatag, command->data_dmamap,
 309             BUS_DMASYNC_POSTWRITE);
 310         bus_dmamap_unload(command->data_dmatag, command->data_dmamap);
 311 }