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virtgpu_prime.c revision 1.2 
      1 /*	$NetBSD: virtgpu_prime.c,v 1.2 2018/08/27 04:58:37 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2014 Canonical
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Andreas Pokorny
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: virtgpu_prime.c,v 1.2 2018/08/27 04:58:37 riastradh Exp $");
     29 
     30 #include "virtgpu_drv.h"
     31 
     32 /* Empty Implementations as there should not be any other driver for a virtual
     33  * device that might share buffers with virtgpu */
     34 
     35 int virtgpu_gem_prime_pin(struct drm_gem_object *obj)
     36 {
     37 	WARN_ONCE(1, "not implemented");
     38 	return -ENODEV;
     39 }
     40 
     41 void virtgpu_gem_prime_unpin(struct drm_gem_object *obj)
     42 {
     43 	WARN_ONCE(1, "not implemented");
     44 }
     45 
     46 
     47 struct sg_table *virtgpu_gem_prime_get_sg_table(struct drm_gem_object *obj)
     48 {
     49 	WARN_ONCE(1, "not implemented");
     50 	return ERR_PTR(-ENODEV);
     51 }
     52 
     53 struct drm_gem_object *virtgpu_gem_prime_import_sg_table(
     54 	struct drm_device *dev, struct dma_buf_attachment *attach,
     55 	struct sg_table *table)
     56 {
     57 	WARN_ONCE(1, "not implemented");
     58 	return ERR_PTR(-ENODEV);
     59 }
     60 
     61 void *virtgpu_gem_prime_vmap(struct drm_gem_object *obj)
     62 {
     63 	WARN_ONCE(1, "not implemented");
     64 	return ERR_PTR(-ENODEV);
     65 }
     66 
     67 void virtgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
     68 {
     69 	WARN_ONCE(1, "not implemented");
     70 }
     71 
     72 int virtgpu_gem_prime_mmap(struct drm_gem_object *obj,
     73 		       struct vm_area_struct *area)
     74 {
     75 	return -ENODEV;
     76 }
     77