cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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qxl_prime.c (2181B)

      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 "qxl_drv.h"
     26#include "qxl_object.h"
     27
     28/* Empty Implementations as there should not be any other driver for a virtual
     29 * device that might share buffers with qxl */
     30
     31int qxl_gem_prime_pin(struct drm_gem_object *obj)
     32{
     33	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     34
     35	return qxl_bo_pin(bo);
     36}
     37
     38void qxl_gem_prime_unpin(struct drm_gem_object *obj)
     39{
     40	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     41
     42	qxl_bo_unpin(bo);
     43}
     44
     45struct sg_table *qxl_gem_prime_get_sg_table(struct drm_gem_object *obj)
     46{
     47	return ERR_PTR(-ENOSYS);
     48}
     49
     50struct drm_gem_object *qxl_gem_prime_import_sg_table(
     51	struct drm_device *dev, struct dma_buf_attachment *attach,
     52	struct sg_table *table)
     53{
     54	return ERR_PTR(-ENOSYS);
     55}
     56
     57int qxl_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map)
     58{
     59	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     60	int ret;
     61
     62	ret = qxl_bo_vmap(bo, map);
     63	if (ret < 0)
     64		return ret;
     65
     66	return 0;
     67}
     68
     69void qxl_gem_prime_vunmap(struct drm_gem_object *obj,
     70			  struct iosys_map *map)
     71{
     72	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     73
     74	qxl_bo_vunmap(bo);
     75}