drivers/gpu/drm/qxl/qxl_dumb.c

   1 /*
   2  * Copyright 2013 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Dave Airlie
  23  *          Alon Levy
  24  */
  25
  26 #include "qxl_drv.h"
  27 #include "qxl_object.h"
  28
  29 /* dumb ioctls implementation */
  30
  31 int qxl_mode_dumb_create(struct drm_file *file_priv,
  32                             struct drm_device *dev,
  33                             struct drm_mode_create_dumb *args)
  34 {
  35         struct qxl_device *qdev = to_qxl(dev);
  36         struct qxl_bo *qobj;
  37         uint32_t handle;
  38         int r;
  39         struct qxl_surface surf;
  40         uint32_t pitch, format;
  41
  42         pitch = args->width * ((args->bpp + 1) / 8);
  43         args->size = pitch * args->height;
  44         args->size = ALIGN(args->size, PAGE_SIZE);
  45
  46         switch (args->bpp) {
  47         case 16:
  48                 format = SPICE_SURFACE_FMT_16_565;
  49                 break;
  50         case 32:
  51                 format = SPICE_SURFACE_FMT_32_xRGB;
  52                 break;
  53         default:
  54                 return -EINVAL;
  55         }
  56
  57         surf.width = args->width;
  58         surf.height = args->height;
  59         surf.stride = pitch;
  60         surf.format = format;
  61         r = qxl_gem_object_create_with_handle(qdev, file_priv,
  62                                               QXL_GEM_DOMAIN_SURFACE,
  63                                               args->size, &surf, &qobj,
  64                                               &handle);
  65         if (r)
  66                 return r;
  67         qobj->is_dumb = true;
  68         args->pitch = pitch;
  69         args->handle = handle;
  70         return 0;
  71 }
  72
  73 int qxl_mode_dumb_mmap(struct drm_file *file_priv,
  74                        struct drm_device *dev,
  75                        uint32_t handle, uint64_t *offset_p)
  76 {
  77         struct drm_gem_object *gobj;
  78         struct qxl_bo *qobj;
  79
  80         BUG_ON(!offset_p);
  81         gobj = drm_gem_object_lookup(file_priv, handle);
  82         if (gobj == NULL)
  83                 return -ENOENT;
  84         qobj = gem_to_qxl_bo(gobj);
  85         *offset_p = qxl_bo_mmap_offset(qobj);
  86         drm_gem_object_put(gobj);
  87         return 0;
  88 }