The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/cam/cam_compat.c

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    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: releng/10.1/sys/cam/cam_compat.c 255870 2013-09-25 15:55:56Z scottl $");
   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 
   50 #include <cam/scsi/scsi_pass.h>
   51 
   52 #include "opt_cam.h"
   53 
   54 static int cam_compat_handle_0x17(struct cdev *dev, u_long cmd, caddr_t addr,
   55     int flag, struct thread *td, d_ioctl_t *cbfnp);
   56 
   57 int
   58 cam_compat_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
   59     struct thread *td, d_ioctl_t *cbfnp)
   60 {
   61         int error;
   62 
   63         switch (cmd) {
   64         case CAMIOCOMMAND_0x16:
   65         {
   66                 union ccb *ccb;
   67 
   68                 ccb = (union ccb *)addr;
   69                 if (ccb->ccb_h.flags & CAM_SG_LIST_PHYS_0x16) {
   70                         ccb->ccb_h.flags &= ~CAM_SG_LIST_PHYS_0x16;
   71                         ccb->ccb_h.flags |= CAM_DATA_SG_PADDR;
   72                 }
   73                 if (ccb->ccb_h.flags & CAM_DATA_PHYS_0x16) {
   74                         ccb->ccb_h.flags &= ~CAM_DATA_PHYS_0x16;
   75                         ccb->ccb_h.flags |= CAM_DATA_PADDR;
   76                 }
   77                 if (ccb->ccb_h.flags & CAM_SCATTER_VALID_0x16) {
   78                         ccb->ccb_h.flags &= CAM_SCATTER_VALID_0x16;
   79                         ccb->ccb_h.flags |= CAM_DATA_SG;
   80                 }
   81                 cmd = CAMIOCOMMAND;
   82                 error = (cbfnp)(dev, cmd, addr, flag, td);
   83                 break;
   84         }
   85         case CAMGETPASSTHRU_0x16:
   86                 cmd = CAMGETPASSTHRU;
   87                 error = (cbfnp)(dev, cmd, addr, flag, td);
   88                 break;
   89         case CAMIOCOMMAND_0x17:
   90                 cmd = CAMIOCOMMAND;
   91                 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp);
   92                 break;
   93         case CAMGETPASSTHRU_0x17:
   94                 cmd = CAMGETPASSTHRU;
   95                 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp);
   96                 break;
   97         default:
   98                 error = ENOTTY;
   99         }
  100 
  101         return (error);
  102 }
  103 
  104 static int
  105 cam_compat_handle_0x17(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
  106     struct thread *td, d_ioctl_t *cbfnp)
  107 {
  108         union ccb               *ccb;
  109         struct ccb_hdr          *hdr;
  110         struct ccb_hdr_0x17     *hdr17;
  111         uint8_t                 *ccbb, *ccbb17;
  112         u_int                   error;
  113 
  114         hdr17 = (struct ccb_hdr_0x17 *)addr;
  115         ccb = xpt_alloc_ccb();
  116         hdr = &ccb->ccb_h;
  117 
  118         hdr->pinfo = hdr17->pinfo;
  119         hdr->xpt_links = hdr17->xpt_links;
  120         hdr->sim_links = hdr17->sim_links;
  121         hdr->periph_links = hdr17->periph_links;
  122         hdr->retry_count = hdr17->retry_count;
  123         hdr->cbfcnp = hdr17->cbfcnp;
  124         hdr->func_code = hdr17->func_code;
  125         hdr->status = hdr17->status;
  126         hdr->path = hdr17->path;
  127         hdr->path_id = hdr17->path_id;
  128         hdr->target_id = hdr17->target_id;
  129         hdr->target_lun = hdr17->target_lun;
  130         hdr->ext_lun.lun64 = 0;
  131         hdr->flags = hdr17->flags;
  132         hdr->xflags = 0;
  133         hdr->periph_priv = hdr17->periph_priv;
  134         hdr->sim_priv = hdr17->sim_priv;
  135         hdr->timeout = hdr17->timeout;
  136         hdr->softtimeout.tv_sec = 0;
  137         hdr->softtimeout.tv_usec = 0;
  138 
  139         ccbb = (uint8_t *)&hdr[1];
  140         ccbb17 = (uint8_t *)&hdr17[1];
  141         bcopy(ccbb17, ccbb, CAM_0X17_DATA_LEN);
  142 
  143         error = (cbfnp)(dev, cmd, (caddr_t)ccb, flag, td);
  144 
  145         hdr17->pinfo = hdr->pinfo;
  146         hdr17->xpt_links = hdr->xpt_links;
  147         hdr17->sim_links = hdr->sim_links;
  148         hdr17->periph_links = hdr->periph_links;
  149         hdr17->retry_count = hdr->retry_count;
  150         hdr17->cbfcnp = hdr->cbfcnp;
  151         hdr17->func_code = hdr->func_code;
  152         hdr17->status = hdr->status;
  153         hdr17->path = hdr->path;
  154         hdr17->path_id = hdr->path_id;
  155         hdr17->target_id = hdr->target_id;
  156         hdr17->target_lun = hdr->target_lun;
  157         hdr17->flags = hdr->flags;
  158         hdr17->periph_priv = hdr->periph_priv;
  159         hdr17->sim_priv = hdr->sim_priv;
  160         hdr17->timeout = hdr->timeout;
  161 
  162         /* The PATH_INQ only needs special handling on the way out */
  163         if (ccb->ccb_h.func_code != XPT_PATH_INQ) {
  164                 bcopy(ccbb, ccbb17, CAM_0X17_DATA_LEN);
  165         } else {
  166                 struct ccb_pathinq      *cpi;
  167                 struct ccb_pathinq_0x17 *cpi17;
  168 
  169                 cpi = &ccb->cpi;
  170                 cpi17 = (struct ccb_pathinq_0x17 *)hdr17;
  171                 cpi17->version_num = cpi->version_num;
  172                 cpi17->hba_inquiry = cpi->hba_inquiry;
  173                 cpi17->target_sprt = (u_int8_t)cpi->target_sprt;
  174                 cpi17->hba_misc = (u_int8_t)cpi->hba_misc;
  175                 cpi17->hba_eng_cnt = cpi->hba_eng_cnt;
  176                 bcopy(&cpi->vuhba_flags[0], &cpi17->vuhba_flags[0], VUHBALEN);
  177                 cpi17->max_target = cpi->max_target;
  178                 cpi17->max_lun = cpi->max_lun;
  179                 cpi17->async_flags = cpi->async_flags;
  180                 cpi17->hpath_id = cpi->hpath_id;
  181                 cpi17->initiator_id = cpi->initiator_id;
  182                 bcopy(&cpi->sim_vid[0], &cpi17->sim_vid[0], SIM_IDLEN);
  183                 bcopy(&cpi->hba_vid[0], &cpi17->hba_vid[0], HBA_IDLEN);
  184                 bcopy(&cpi->dev_name[0], &cpi17->dev_name[0], DEV_IDLEN);
  185                 cpi17->unit_number = cpi->unit_number;
  186                 cpi17->bus_id = cpi->bus_id;
  187                 cpi17->base_transfer_speed = cpi->base_transfer_speed;
  188                 cpi17->protocol = cpi->protocol;
  189                 cpi17->protocol_version = cpi->protocol_version;
  190                 cpi17->transport = cpi->transport;
  191                 cpi17->transport_version = cpi->transport_version;
  192                 bcopy(&cpi->xport_specific, &cpi17->xport_specific,
  193                     PATHINQ_SETTINGS_SIZE);
  194                 cpi17->maxio = cpi->maxio;
  195                 cpi17->hba_vendor = cpi->hba_vendor;
  196                 cpi17->hba_device = cpi->hba_device;
  197                 cpi17->hba_subvendor = cpi->hba_subvendor;
  198                 cpi17->hba_subdevice = cpi->hba_subdevice;
  199         }
  200 
  201         xpt_free_ccb(ccb);
  202 
  203         return (error);
  204 }

Cache object: 428702e31f91b1640879c8356d132ddb


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