drm_ioctl.h

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    1 /* drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
    2  * Created: Fri Jan  8 09:01:26 1999 by faith@valinux.com */
    3 /*-
    4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
    5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
    6  * All Rights Reserved.
    7  *
    8  * Permission is hereby granted, free of charge, to any person obtaining a
    9  * copy of this software and associated documentation files (the "Software"),
   10  * to deal in the Software without restriction, including without limitation
   11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   12  * and/or sell copies of the Software, and to permit persons to whom the
   13  * Software is furnished to do so, subject to the following conditions:
   14  *
   15  * The above copyright notice and this permission notice (including the next
   16  * paragraph) shall be included in all copies or substantial portions of the
   17  * Software.
   18  *
   19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   25  * OTHER DEALINGS IN THE SOFTWARE.
   26  *
   27  * Authors:
   28  *    Rickard E. (Rik) Faith <faith@valinux.com>
   29  *    Gareth Hughes <gareth@valinux.com>
   30  *
   31  * $FreeBSD$
   32  */
   33 
   34 #include "dev/drm/drmP.h"
   35 
   36 /*
   37  * Beginning in revision 1.1 of the DRM interface, getunique will return
   38  * a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function)
   39  * before setunique has been called.  The format for the bus-specific part of
   40  * the unique is not defined for any other bus.
   41  */
   42 int DRM(getunique)( DRM_IOCTL_ARGS )
   43 {
   44         DRM_DEVICE;
   45         drm_unique_t     u;
   46 
   47         DRM_COPY_FROM_USER_IOCTL( u, (drm_unique_t *)data, sizeof(u) );
   48 
   49         if (u.unique_len >= dev->unique_len) {
   50                 if (DRM_COPY_TO_USER(u.unique, dev->unique, dev->unique_len))
   51                         return DRM_ERR(EFAULT);
   52         }
   53         u.unique_len = dev->unique_len;
   54 
   55         DRM_COPY_TO_USER_IOCTL( (drm_unique_t *)data, u, sizeof(u) );
   56 
   57         return 0;
   58 }
   59 
   60 /* Deprecated in DRM version 1.1, and will return EBUSY when setversion has
   61  * requested version 1.1 or greater.
   62  */
   63 int DRM(setunique)( DRM_IOCTL_ARGS )
   64 {
   65         DRM_DEVICE;
   66         drm_unique_t u;
   67         int domain, bus, slot, func, ret;
   68 
   69         if (dev->unique_len || dev->unique)
   70                 return DRM_ERR(EBUSY);
   71 
   72         DRM_COPY_FROM_USER_IOCTL( u, (drm_unique_t *)data, sizeof(u) );
   73 
   74         if (!u.unique_len || u.unique_len > 1024)
   75                 return DRM_ERR(EINVAL);
   76 
   77         dev->unique_len = u.unique_len;
   78         dev->unique     = DRM(alloc)(u.unique_len + 1, DRM_MEM_DRIVER);
   79 
   80         if (dev->unique == NULL)
   81                 return DRM_ERR(ENOMEM);
   82 
   83         if (DRM_COPY_FROM_USER(dev->unique, u.unique, dev->unique_len))
   84                 return DRM_ERR(EFAULT);
   85 
   86         dev->unique[dev->unique_len] = '\0';
   87 
   88         /* Return error if the busid submitted doesn't match the device's actual
   89          * busid.
   90          */
   91         ret = sscanf(dev->unique, "PCI:%d:%d:%d", &bus, &slot, &func);
   92         if (ret != 3)
   93                 return DRM_ERR(EINVAL);
   94         domain = bus >> 8;
   95         bus &= 0xff;
   96         
   97         if ((domain != dev->pci_domain) ||
   98             (bus != dev->pci_bus) ||
   99             (slot != dev->pci_slot) ||
  100             (func != dev->pci_func))
  101                 return DRM_ERR(EINVAL);
  102 
  103         return 0;
  104 }
  105 
  106 
  107 static int
  108 DRM(set_busid)(drm_device_t *dev)
  109 {
  110 
  111         if (dev->unique != NULL)
  112                 return EBUSY;
  113 
  114         dev->unique_len = 20;
  115         dev->unique = DRM(alloc)(dev->unique_len + 1, DRM_MEM_DRIVER);
  116         if (dev->unique == NULL)
  117                 return ENOMEM;
  118 
  119         snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x",
  120             dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
  121 
  122         return 0;
  123 }
  124 
  125 int DRM(getmap)( DRM_IOCTL_ARGS )
  126 {
  127         DRM_DEVICE;
  128         drm_map_t    map;
  129         drm_local_map_t    *mapinlist;
  130         drm_map_list_entry_t *list;
  131         int          idx;
  132         int          i = 0;
  133 
  134         DRM_COPY_FROM_USER_IOCTL( map, (drm_map_t *)data, sizeof(map) );
  135 
  136         idx = map.offset;
  137 
  138         DRM_LOCK();
  139         if (idx < 0) {
  140                 DRM_UNLOCK();
  141                 return DRM_ERR(EINVAL);
  142         }
  143 
  144         TAILQ_FOREACH(list, dev->maplist, link) {
  145                 mapinlist = list->map;
  146                 if (i==idx) {
  147                         map.offset = mapinlist->offset;
  148                         map.size   = mapinlist->size;
  149                         map.type   = mapinlist->type;
  150                         map.flags  = mapinlist->flags;
  151                         map.handle = mapinlist->handle;
  152                         map.mtrr   = mapinlist->mtrr;
  153                         break;
  154                 }
  155                 i++;
  156         }
  157 
  158         DRM_UNLOCK();
  159 
  160         if (!list)
  161                 return EINVAL;
  162 
  163         DRM_COPY_TO_USER_IOCTL( (drm_map_t *)data, map, sizeof(map) );
  164 
  165         return 0;
  166 }
  167 
  168 int DRM(getclient)( DRM_IOCTL_ARGS )
  169 {
  170         DRM_DEVICE;
  171         drm_client_t client;
  172         drm_file_t   *pt;
  173         int          idx;
  174         int          i = 0;
  175 
  176         DRM_COPY_FROM_USER_IOCTL( client, (drm_client_t *)data, sizeof(client) );
  177 
  178         idx = client.idx;
  179         DRM_LOCK();
  180         TAILQ_FOREACH(pt, &dev->files, link) {
  181                 if (i==idx)
  182                 {
  183                         client.auth  = pt->authenticated;
  184                         client.pid   = pt->pid;
  185                         client.uid   = pt->uid;
  186                         client.magic = pt->magic;
  187                         client.iocs  = pt->ioctl_count;
  188                         DRM_UNLOCK();
  189 
  190                         *(drm_client_t *)data = client;
  191                         return 0;
  192                 }
  193                 i++;
  194         }
  195         DRM_UNLOCK();
  196 
  197         DRM_COPY_TO_USER_IOCTL( (drm_client_t *)data, client, sizeof(client) );
  198 
  199         return 0;
  200 }
  201 
  202 int DRM(getstats)( DRM_IOCTL_ARGS )
  203 {
  204         DRM_DEVICE;
  205         drm_stats_t  stats;
  206         int          i;
  207 
  208         memset(&stats, 0, sizeof(stats));
  209         
  210         DRM_LOCK();
  211 
  212         for (i = 0; i < dev->counters; i++) {
  213                 if (dev->types[i] == _DRM_STAT_LOCK)
  214                         stats.data[i].value
  215                                 = (dev->lock.hw_lock
  216                                    ? dev->lock.hw_lock->lock : 0);
  217                 else 
  218                         stats.data[i].value = atomic_read(&dev->counts[i]);
  219                 stats.data[i].type  = dev->types[i];
  220         }
  221         
  222         stats.count = dev->counters;
  223 
  224         DRM_UNLOCK();
  225 
  226         DRM_COPY_TO_USER_IOCTL( (drm_stats_t *)data, stats, sizeof(stats) );
  227 
  228         return 0;
  229 }
  230 
  231 #define DRM_IF_MAJOR    1
  232 #define DRM_IF_MINOR    2
  233 
  234 int DRM(setversion)(DRM_IOCTL_ARGS)
  235 {
  236         DRM_DEVICE;
  237         drm_set_version_t sv;
  238         drm_set_version_t retv;
  239         int if_version;
  240 
  241         DRM_COPY_FROM_USER_IOCTL(sv, (drm_set_version_t *)data, sizeof(sv));
  242 
  243         retv.drm_di_major = DRM_IF_MAJOR;
  244         retv.drm_di_minor = DRM_IF_MINOR;
  245         retv.drm_dd_major = DRIVER_MAJOR;
  246         retv.drm_dd_minor = DRIVER_MINOR;
  247         
  248         DRM_COPY_TO_USER_IOCTL((drm_set_version_t *)data, retv, sizeof(sv));
  249 
  250         if (sv.drm_di_major != -1) {
  251                 if (sv.drm_di_major != DRM_IF_MAJOR ||
  252                     sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR)
  253                         return EINVAL;
  254                 if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_dd_minor);
  255                 dev->if_version = DRM_MAX(if_version, dev->if_version);
  256                 if (sv.drm_di_minor >= 1) {
  257                         /*
  258                          * Version 1.1 includes tying of DRM to specific device
  259                          */
  260                         DRM(set_busid)(dev);
  261                 }
  262         }
  263 
  264         if (sv.drm_dd_major != -1) {
  265                 if (sv.drm_dd_major != DRIVER_MAJOR ||
  266                     sv.drm_dd_minor < 0 || sv.drm_dd_minor > DRIVER_MINOR)
  267                         return EINVAL;
  268 #ifdef DRIVER_SETVERSION
  269                 DRIVER_SETVERSION(dev, &sv);
  270 #endif
  271         }
  272         return 0;
  273 }
  274 
  275 
  276 int DRM(noop)(DRM_IOCTL_ARGS)
  277 {
  278         DRM_DEBUG("\n");
  279         return 0;
  280 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/drm/drm_ioctl.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/drm_ioctl.h