1 /* 2 * Copyright (C) 2015 Red Hat, Inc. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26 #include <drm/drm_file.h> 27 #include <drm/drm_fourcc.h> 28 29 #include "virtgpu_drv.h" 30 31 void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj) 32 { 33 struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(gem_obj); 34 35 if (obj) 36 virtio_gpu_object_unref(&obj); 37 } 38 39 struct virtio_gpu_object* 40 virtio_gpu_alloc_object(struct drm_device *dev, 41 struct virtio_gpu_object_params *params, 42 struct virtio_gpu_fence *fence) 43 { 44 struct virtio_gpu_device *vgdev = dev->dev_private; 45 struct virtio_gpu_object *obj; 46 int ret; 47 48 ret = virtio_gpu_object_create(vgdev, params, &obj, fence); 49 if (ret) 50 return ERR_PTR(ret); 51 52 return obj; 53 } 54 55 int virtio_gpu_gem_create(struct drm_file *file, 56 struct drm_device *dev, 57 struct virtio_gpu_object_params *params, 58 struct drm_gem_object **obj_p, 59 uint32_t *handle_p) 60 { 61 struct virtio_gpu_object *obj; 62 int ret; 63 u32 handle; 64 65 obj = virtio_gpu_alloc_object(dev, params, NULL); 66 if (IS_ERR(obj)) 67 return PTR_ERR(obj); 68 69 ret = drm_gem_handle_create(file, &obj->gem_base, &handle); 70 if (ret) { 71 drm_gem_object_release(&obj->gem_base); 72 return ret; 73 } 74 75 *obj_p = &obj->gem_base; 76 77 /* drop reference from allocate - handle holds it now */ 78 drm_gem_object_put_unlocked(&obj->gem_base); 79 80 *handle_p = handle; 81 return 0; 82 } 83 84 int virtio_gpu_mode_dumb_create(struct drm_file *file_priv, 85 struct drm_device *dev, 86 struct drm_mode_create_dumb *args) 87 { 88 struct drm_gem_object *gobj; 89 struct virtio_gpu_object_params params = { 0 }; 90 int ret; 91 uint32_t pitch; 92 93 if (args->bpp != 32) 94 return -EINVAL; 95 96 pitch = args->width * 4; 97 args->size = pitch * args->height; 98 args->size = ALIGN(args->size, PAGE_SIZE); 99 100 params.format = virtio_gpu_translate_format(DRM_FORMAT_HOST_XRGB8888); 101 params.width = args->width; 102 params.height = args->height; 103 params.size = args->size; 104 params.dumb = true; 105 ret = virtio_gpu_gem_create(file_priv, dev, ¶ms, &gobj, 106 &args->handle); 107 if (ret) 108 goto fail; 109 110 args->pitch = pitch; 111 return ret; 112 113 fail: 114 return ret; 115 } 116 117 int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv, 118 struct drm_device *dev, 119 uint32_t handle, uint64_t *offset_p) 120 { 121 struct drm_gem_object *gobj; 122 struct virtio_gpu_object *obj; 123 124 BUG_ON(!offset_p); 125 gobj = drm_gem_object_lookup(file_priv, handle); 126 if (gobj == NULL) 127 return -ENOENT; 128 obj = gem_to_virtio_gpu_obj(gobj); 129 *offset_p = virtio_gpu_object_mmap_offset(obj); 130 drm_gem_object_put_unlocked(gobj); 131 return 0; 132 } 133 134 int virtio_gpu_gem_object_open(struct drm_gem_object *obj, 135 struct drm_file *file) 136 { 137 struct virtio_gpu_device *vgdev = obj->dev->dev_private; 138 struct virtio_gpu_fpriv *vfpriv = file->driver_priv; 139 struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj); 140 int r; 141 142 if (!vgdev->has_virgl_3d) 143 return 0; 144 145 r = virtio_gpu_object_reserve(qobj, false); 146 if (r) 147 return r; 148 149 virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id, 150 qobj->hw_res_handle); 151 virtio_gpu_object_unreserve(qobj); 152 return 0; 153 } 154 155 void virtio_gpu_gem_object_close(struct drm_gem_object *obj, 156 struct drm_file *file) 157 { 158 struct virtio_gpu_device *vgdev = obj->dev->dev_private; 159 struct virtio_gpu_fpriv *vfpriv = file->driver_priv; 160 struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj); 161 int r; 162 163 if (!vgdev->has_virgl_3d) 164 return; 165 166 r = virtio_gpu_object_reserve(qobj, false); 167 if (r) 168 return; 169 170 virtio_gpu_cmd_context_detach_resource(vgdev, vfpriv->ctx_id, 171 qobj->hw_res_handle); 172 virtio_gpu_object_unreserve(qobj); 173 } 174