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vgem_drv.h revision 1.3 
      1 /*	$NetBSD: vgem_drv.h,v 1.3 2021/12/18 23:45:44 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright  2012 Intel Corporation
      5  * Copyright  2014 The Chromium OS Authors
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     11  * and/or sell copies of the Software, and to permit persons to whom the
     12  * Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the next
     15  * paragraph) shall be included in all copies or substantial portions of the
     16  * Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     24  * IN THE SOFTWARE.
     25  *
     26  * Authors:
     27  *    Ben Widawsky <ben (at) bwidawsk.net>
     28  *
     29  */
     30 
     31 #ifndef _VGEM_DRV_H_
     32 #define _VGEM_DRV_H_
     33 
     34 #include <drm/drm_gem.h>
     35 #include <drm/drm_cache.h>
     36 
     37 #include <uapi/drm/vgem_drm.h>
     38 
     39 struct vgem_file {
     40 	struct idr fence_idr;
     41 	struct mutex fence_mutex;
     42 };
     43 
     44 #define to_vgem_bo(x) container_of(x, struct drm_vgem_gem_object, base)
     45 struct drm_vgem_gem_object {
     46 	struct drm_gem_object base;
     47 
     48 	struct page **pages;
     49 	unsigned int pages_pin_count;
     50 	struct mutex pages_lock;
     51 
     52 	struct sg_table *table;
     53 };
     54 
     55 int vgem_fence_open(struct vgem_file *file);
     56 int vgem_fence_attach_ioctl(struct drm_device *dev,
     57 			    void *data,
     58 			    struct drm_file *file);
     59 int vgem_fence_signal_ioctl(struct drm_device *dev,
     60 			    void *data,
     61 			    struct drm_file *file);
     62 void vgem_fence_close(struct vgem_file *file);
     63 
     64 #endif
     65