sys/cam/cam_compat.c

   1 /*-
   2  * CAM ioctl compatibility shims
   3  *
   4  * Copyright (c) 2013 Scott Long
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification, immediately at the beginning of the file.
  13  * 2. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/types.h>
  36 #include <sys/kernel.h>
  37 #include <sys/conf.h>
  38 #include <sys/fcntl.h>
  39
  40 #include <sys/lock.h>
  41 #include <sys/mutex.h>
  42 #include <sys/sysctl.h>
  43 #include <sys/kthread.h>
  44
  45 #include <cam/cam.h>
  46 #include <cam/cam_ccb.h>
  47 #include <cam/cam_xpt.h>
  48 #include <cam/cam_compat.h>
  49 #include <cam/cam_periph.h>
  50
  51 #include <cam/scsi/scsi_pass.h>
  52
  53 #include "opt_cam.h"
  54
  55 static int cam_compat_handle_0x17(struct cdev *dev, u_long cmd, caddr_t addr,
  56     int flag, struct thread *td, d_ioctl_t *cbfnp);
  57 static int cam_compat_handle_0x18(struct cdev *dev, u_long cmd, caddr_t addr,
  58     int flag, struct thread *td, d_ioctl_t *cbfnp);
  59 static int cam_compat_translate_dev_match_0x18(union ccb *ccb);
  60
  61 int
  62 cam_compat_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
  63     struct thread *td, d_ioctl_t *cbfnp)
  64 {
  65         int error;
  66
  67         switch (cmd) {
  68         case CAMIOCOMMAND_0x16:
  69         {
  70                 struct ccb_hdr_0x17 *hdr17;
  71
  72                 hdr17 = (struct ccb_hdr_0x17 *)addr;
  73                 if (hdr17->flags & CAM_SG_LIST_PHYS_0x16) {
  74                         hdr17->flags &= ~CAM_SG_LIST_PHYS_0x16;
  75                         hdr17->flags |= CAM_DATA_SG_PADDR;
  76                 }
  77                 if (hdr17->flags & CAM_DATA_PHYS_0x16) {
  78                         hdr17->flags &= ~CAM_DATA_PHYS_0x16;
  79                         hdr17->flags |= CAM_DATA_PADDR;
  80                 }
  81                 if (hdr17->flags & CAM_SCATTER_VALID_0x16) {
  82                         hdr17->flags &= CAM_SCATTER_VALID_0x16;
  83                         hdr17->flags |= CAM_DATA_SG;
  84                 }
  85                 cmd = CAMIOCOMMAND;
  86                 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp);
  87                 break;
  88         }
  89         case CAMGETPASSTHRU_0x16:
  90                 cmd = CAMGETPASSTHRU;
  91                 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp);
  92                 break;
  93         case CAMIOCOMMAND_0x17:
  94                 cmd = CAMIOCOMMAND;
  95                 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp);
  96                 break;
  97         case CAMGETPASSTHRU_0x17:
  98                 cmd = CAMGETPASSTHRU;
  99                 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp);
 100                 break;
 101         case CAMIOCOMMAND_0x18:
 102                 cmd = CAMIOCOMMAND;
 103                 error = cam_compat_handle_0x18(dev, cmd, addr, flag, td, cbfnp);
 104                 break;
 105         case CAMGETPASSTHRU_0x18:
 106                 cmd = CAMGETPASSTHRU;
 107                 error = cam_compat_handle_0x18(dev, cmd, addr, flag, td, cbfnp);
 108                 break;
 109         default:
 110                 error = ENOTTY;
 111         }
 112
 113         return (error);
 114 }
 115
 116 static int
 117 cam_compat_handle_0x17(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
 118     struct thread *td, d_ioctl_t *cbfnp)
 119 {
 120         union ccb               *ccb;
 121         struct ccb_hdr          *hdr;
 122         struct ccb_hdr_0x17     *hdr17;
 123         uint8_t                 *ccbb, *ccbb17;
 124         u_int                   error;
 125
 126         hdr17 = (struct ccb_hdr_0x17 *)addr;
 127         ccb = xpt_alloc_ccb();
 128         hdr = &ccb->ccb_h;
 129
 130         hdr->pinfo = hdr17->pinfo;
 131         hdr->xpt_links = hdr17->xpt_links;
 132         hdr->sim_links = hdr17->sim_links;
 133         hdr->periph_links = hdr17->periph_links;
 134         hdr->retry_count = hdr17->retry_count;
 135         hdr->cbfcnp = hdr17->cbfcnp;
 136         hdr->func_code = hdr17->func_code;
 137         hdr->status = hdr17->status;
 138         hdr->path = hdr17->path;
 139         hdr->path_id = hdr17->path_id;
 140         hdr->target_id = hdr17->target_id;
 141         hdr->target_lun = hdr17->target_lun;
 142         hdr->flags = hdr17->flags;
 143         hdr->xflags = 0;
 144         hdr->periph_priv = hdr17->periph_priv;
 145         hdr->sim_priv = hdr17->sim_priv;
 146         hdr->timeout = hdr17->timeout;
 147         hdr->softtimeout.tv_sec = 0;
 148         hdr->softtimeout.tv_usec = 0;
 149
 150         ccbb = (uint8_t *)&hdr[1];
 151         ccbb17 = (uint8_t *)&hdr17[1];
 152         bcopy(ccbb17, ccbb, CAM_0X17_DATA_LEN);
 153
 154         error = (cbfnp)(dev, cmd, (caddr_t)ccb, flag, td);
 155
 156         hdr17->pinfo = hdr->pinfo;
 157         hdr17->xpt_links = hdr->xpt_links;
 158         hdr17->sim_links = hdr->sim_links;
 159         hdr17->periph_links = hdr->periph_links;
 160         hdr17->retry_count = hdr->retry_count;
 161         hdr17->cbfcnp = hdr->cbfcnp;
 162         hdr17->func_code = hdr->func_code;
 163         hdr17->status = hdr->status;
 164         hdr17->path = hdr->path;
 165         hdr17->path_id = hdr->path_id;
 166         hdr17->target_id = hdr->target_id;
 167         hdr17->target_lun = hdr->target_lun;
 168         hdr17->flags = hdr->flags;
 169         hdr17->periph_priv = hdr->periph_priv;
 170         hdr17->sim_priv = hdr->sim_priv;
 171         hdr17->timeout = hdr->timeout;
 172
 173         if (ccb->ccb_h.func_code == XPT_PATH_INQ) {
 174                 struct ccb_pathinq      *cpi;
 175                 struct ccb_pathinq_0x17 *cpi17;
 176
 177                 /* The PATH_INQ only needs special handling on the way out */
 178                 cpi = &ccb->cpi;
 179                 cpi17 = (struct ccb_pathinq_0x17 *)hdr17;
 180                 cpi17->version_num = cpi->version_num;
 181                 cpi17->hba_inquiry = cpi->hba_inquiry;
 182                 cpi17->target_sprt = (u_int8_t)cpi->target_sprt;
 183                 cpi17->hba_misc = (u_int8_t)cpi->hba_misc;
 184                 cpi17->hba_eng_cnt = cpi->hba_eng_cnt;
 185                 bcopy(&cpi->vuhba_flags[0], &cpi17->vuhba_flags[0], VUHBALEN);
 186                 cpi17->max_target = cpi->max_target;
 187                 cpi17->max_lun = cpi->max_lun;
 188                 cpi17->async_flags = cpi->async_flags;
 189                 cpi17->hpath_id = cpi->hpath_id;
 190                 cpi17->initiator_id = cpi->initiator_id;
 191                 bcopy(&cpi->sim_vid[0], &cpi17->sim_vid[0], SIM_IDLEN);
 192                 bcopy(&cpi->hba_vid[0], &cpi17->hba_vid[0], HBA_IDLEN);
 193                 bcopy(&cpi->dev_name[0], &cpi17->dev_name[0], DEV_IDLEN);
 194                 cpi17->unit_number = cpi->unit_number;
 195                 cpi17->bus_id = cpi->bus_id;
 196                 cpi17->base_transfer_speed = cpi->base_transfer_speed;
 197                 cpi17->protocol = cpi->protocol;
 198                 cpi17->protocol_version = cpi->protocol_version;
 199                 cpi17->transport = cpi->transport;
 200                 cpi17->transport_version = cpi->transport_version;
 201                 bcopy(&cpi->xport_specific, &cpi17->xport_specific,
 202                     PATHINQ_SETTINGS_SIZE);
 203                 cpi17->maxio = cpi->maxio;
 204                 cpi17->hba_vendor = cpi->hba_vendor;
 205                 cpi17->hba_device = cpi->hba_device;
 206                 cpi17->hba_subvendor = cpi->hba_subvendor;
 207                 cpi17->hba_subdevice = cpi->hba_subdevice;
 208         } else if (ccb->ccb_h.func_code == XPT_DEV_MATCH) {
 209                 /* Copy the rest of the header over */
 210                 bcopy(ccbb, ccbb17, CAM_0X17_DATA_LEN);
 211
 212                 cam_compat_translate_dev_match_0x18(ccb);
 213         } else {
 214                 bcopy(ccbb, ccbb17, CAM_0X17_DATA_LEN);
 215         }
 216
 217         xpt_free_ccb(ccb);
 218
 219         return (error);
 220 }
 221
 222 static int
 223 cam_compat_handle_0x18(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
 224     struct thread *td, d_ioctl_t *cbfnp)
 225 {
 226         union ccb               *ccb;
 227         struct ccb_hdr          *hdr;
 228         struct ccb_hdr_0x18     *hdr18;
 229         uint8_t                 *ccbb, *ccbb18;
 230         u_int                   error;
 231
 232         hdr18 = (struct ccb_hdr_0x18 *)addr;
 233         ccb = xpt_alloc_ccb();
 234         hdr = &ccb->ccb_h;
 235
 236         hdr->pinfo = hdr18->pinfo;
 237         hdr->xpt_links = hdr18->xpt_links;
 238         hdr->sim_links = hdr18->sim_links;
 239         hdr->periph_links = hdr18->periph_links;
 240         hdr->retry_count = hdr18->retry_count;
 241         hdr->cbfcnp = hdr18->cbfcnp;
 242         hdr->func_code = hdr18->func_code;
 243         hdr->status = hdr18->status;
 244         hdr->path = hdr18->path;
 245         hdr->path_id = hdr18->path_id;
 246         hdr->target_id = hdr18->target_id;
 247         hdr->target_lun = hdr18->target_lun;
 248         if (hdr18->xflags & CAM_EXTLUN_VALID_0x18)
 249                 hdr->target_lun = hdr18->ext_lun;
 250         hdr->flags = hdr18->flags;
 251         hdr->xflags = hdr18->xflags;
 252         hdr->periph_priv = hdr18->periph_priv;
 253         hdr->sim_priv = hdr18->sim_priv;
 254         hdr->timeout = hdr18->timeout;
 255         hdr->softtimeout.tv_sec = 0;
 256         hdr->softtimeout.tv_usec = 0;
 257
 258         ccbb = (uint8_t *)&hdr[1];
 259         ccbb18 = (uint8_t *)&hdr18[1];
 260         bcopy(ccbb18, ccbb, CAM_0X18_DATA_LEN);
 261
 262         error = (cbfnp)(dev, cmd, (caddr_t)ccb, flag, td);
 263
 264         hdr18->pinfo = hdr->pinfo;
 265         hdr18->xpt_links = hdr->xpt_links;
 266         hdr18->sim_links = hdr->sim_links;
 267         hdr18->periph_links = hdr->periph_links;
 268         hdr18->retry_count = hdr->retry_count;
 269         hdr18->cbfcnp = hdr->cbfcnp;
 270         hdr18->func_code = hdr->func_code;
 271         hdr18->status = hdr->status;
 272         hdr18->path = hdr->path;
 273         hdr18->path_id = hdr->path_id;
 274         hdr18->target_id = hdr->target_id;
 275         hdr18->target_lun = hdr->target_lun;
 276         hdr18->ext_lun = hdr->target_lun;
 277         hdr18->flags = hdr->flags;
 278         hdr18->xflags = hdr->xflags | CAM_EXTLUN_VALID_0x18;
 279         hdr18->periph_priv = hdr->periph_priv;
 280         hdr18->sim_priv = hdr->sim_priv;
 281         hdr18->timeout = hdr->timeout;
 282
 283         bcopy(ccbb, ccbb18, CAM_0X18_DATA_LEN);
 284
 285         if (ccb->ccb_h.func_code == XPT_DEV_MATCH)
 286                 cam_compat_translate_dev_match_0x18(ccb);
 287
 288         xpt_free_ccb(ccb);
 289
 290         return (error);
 291 }
 292
 293 static int
 294 cam_compat_translate_dev_match_0x18(union ccb *ccb)
 295 {
 296         struct dev_match_result         *dm;
 297         struct dev_match_result_0x18    *dm18;
 298         struct cam_periph_map_info      mapinfo;
 299         int i;
 300
 301         /* Remap the CCB into kernel address space */
 302         bzero(&mapinfo, sizeof(mapinfo));
 303         cam_periph_mapmem(ccb, &mapinfo, MAXPHYS);
 304
 305         dm = ccb->cdm.matches;
 306         /* Translate in-place: old fields are smaller */
 307         dm18 = (struct dev_match_result_0x18 *)(dm);
 308
 309         for (i = 0; i < ccb->cdm.num_matches; i++) {
 310                 dm18[i].type = dm[i].type;
 311                 switch (dm[i].type) {
 312                 case DEV_MATCH_PERIPH:
 313                         memcpy(&dm18[i].result.periph_result.periph_name,
 314                             &dm[i].result.periph_result.periph_name,
 315                             DEV_IDLEN);
 316                         dm18[i].result.periph_result.unit_number =
 317                            dm[i].result.periph_result.unit_number;
 318                         dm18[i].result.periph_result.path_id =
 319                            dm[i].result.periph_result.path_id;
 320                         dm18[i].result.periph_result.target_id =
 321                            dm[i].result.periph_result.target_id;
 322                         dm18[i].result.periph_result.target_lun =
 323                            dm[i].result.periph_result.target_lun;
 324                         break;
 325                 case DEV_MATCH_DEVICE:
 326                         dm18[i].result.device_result.path_id =
 327                            dm[i].result.device_result.path_id;
 328                         dm18[i].result.device_result.target_id =
 329                            dm[i].result.device_result.target_id;
 330                         dm18[i].result.device_result.target_lun =
 331                            dm[i].result.device_result.target_lun;
 332                         dm18[i].result.device_result.protocol =
 333                            dm[i].result.device_result.protocol;
 334                         memcpy(&dm18[i].result.device_result.inq_data,
 335                             &dm[i].result.device_result.inq_data,
 336                             sizeof(struct scsi_inquiry_data));
 337                         memcpy(&dm18[i].result.device_result.ident_data,
 338                             &dm[i].result.device_result.ident_data,
 339                             sizeof(struct ata_params));
 340                         dm18[i].result.device_result.flags =
 341                            dm[i].result.device_result.flags;
 342                         break;
 343                 case DEV_MATCH_BUS:
 344                         memcpy(&dm18[i].result.bus_result,
 345                             &dm[i].result.bus_result,
 346                             sizeof(struct bus_match_result));
 347                         break;
 348                 }
 349         }
 350
 351         cam_periph_unmapmem(ccb, &mapinfo);
 352
 353         return (0);
 354 }
 355