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 = dev->dev_private;
  36        struct qxl_bo *qobj;
  37        uint32_t handle;
  38        int r;
  39        struct qxl_surface surf;
  40        uint32_t pitch, format;
  41        pitch = args->width * ((args->bpp + 1) / 8);
  42        args->size = pitch * args->height;
  43        args->size = ALIGN(args->size, PAGE_SIZE);
  44
  45        switch (args->bpp) {
  46        case 16:
  47                format = SPICE_SURFACE_FMT_16_565;
  48                break;
  49        case 32:
  50                format = SPICE_SURFACE_FMT_32_xRGB;
  51                break;
  52        default:
  53                return -EINVAL;
  54        }
  55          
  56        surf.width = args->width;
  57        surf.height = args->height;
  58        surf.stride = pitch;
  59        surf.format = format;
  60        r = qxl_gem_object_create_with_handle(qdev, file_priv,
  61                                              QXL_GEM_DOMAIN_VRAM,
  62                                              args->size, &surf, &qobj,
  63                                              &handle);
  64        if (r)
  65                return r;
  66        args->pitch = pitch;
  67        args->handle = handle;
  68        return 0;
  69}
  70
  71int qxl_mode_dumb_mmap(struct drm_file *file_priv,
  72                       struct drm_device *dev,
  73                       uint32_t handle, uint64_t *offset_p)
  74{
  75        struct drm_gem_object *gobj;
  76        struct qxl_bo *qobj;
  77
  78        BUG_ON(!offset_p);
  79        gobj = drm_gem_object_lookup(dev, file_priv, handle);
  80        if (gobj == NULL)
  81                return -ENOENT;
  82        qobj = gem_to_qxl_bo(gobj);
  83        *offset_p = qxl_bo_mmap_offset(qobj);
  84        drm_gem_object_unreference_unlocked(gobj);
  85        return 0;
  86}
  87