sys/dev/ips/ips_disk.c

   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 }