LXR linux/drivers/gpu/drm/qxl/qxl

   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
  31int 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
  73int 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}
  89