1 /* 2 * Copyright 2014 Canonical 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: Andreas Pokorny 23 */ 24 25 #include "virtgpu_drv.h" 26 27 /* Empty Implementations as there should not be any other driver for a virtual 28 * device that might share buffers with virtgpu 29 */ 30 31 int virtgpu_gem_prime_pin(struct drm_gem_object *obj) 32 { 33 WARN_ONCE(1, "not implemented"); 34 return -ENODEV; 35 } 36 37 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj) 38 { 39 WARN_ONCE(1, "not implemented"); 40 } 41 42 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj) 43 { 44 return ERR_PTR(-ENODEV); 45 } 46 47 struct drm_gem_object *virtgpu_gem_prime_import_sg_table( 48 struct drm_device *dev, struct dma_buf_attachment *attach, 49 struct sg_table *table) 50 { 51 return ERR_PTR(-ENODEV); 52 } 53 54 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj) 55 { 56 struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj); 57 int ret; 58 59 ret = virtio_gpu_object_kmap(bo); 60 if (ret) 61 return NULL; 62 return bo->vmap; 63 } 64 65 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) 66 { 67 virtio_gpu_object_kunmap(gem_to_virtio_gpu_obj(obj)); 68 } 69 70 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj, 71 struct vm_area_struct *area) 72 { 73 return -ENODEV; 74 } 75