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      1 /*	$NetBSD: qxl_gem.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2013 Red Hat Inc.
      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: Dave Airlie
     25  *          Alon Levy
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: qxl_gem.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $");
     30 
     31 #include <drm/drm.h>
     32 
     33 #include "qxl_drv.h"
     34 #include "qxl_object.h"
     35 
     36 void qxl_gem_object_free(struct drm_gem_object *gobj)
     37 {
     38 	struct qxl_bo *qobj = gem_to_qxl_bo(gobj);
     39 	struct qxl_device *qdev;
     40 	struct ttm_buffer_object *tbo;
     41 
     42 	qdev = (struct qxl_device *)gobj->dev->dev_private;
     43 
     44 	qxl_surface_evict(qdev, qobj, false);
     45 
     46 	tbo = &qobj->tbo;
     47 	ttm_bo_put(tbo);
     48 }
     49 
     50 int qxl_gem_object_create(struct qxl_device *qdev, int size,
     51 			  int alignment, int initial_domain,
     52 			  bool discardable, bool kernel,
     53 			  struct qxl_surface *surf,
     54 			  struct drm_gem_object **obj)
     55 {
     56 	struct qxl_bo *qbo;
     57 	int r;
     58 
     59 	*obj = NULL;
     60 	/* At least align on page size */
     61 	if (alignment < PAGE_SIZE)
     62 		alignment = PAGE_SIZE;
     63 	r = qxl_bo_create(qdev, size, kernel, false, initial_domain, surf, &qbo);
     64 	if (r) {
     65 		if (r != -ERESTARTSYS)
     66 			DRM_ERROR(
     67 			"Failed to allocate GEM object (%d, %d, %u, %d)\n",
     68 				  size, initial_domain, alignment, r);
     69 		return r;
     70 	}
     71 	*obj = &qbo->tbo.base;
     72 
     73 	mutex_lock(&qdev->gem.mutex);
     74 	list_add_tail(&qbo->list, &qdev->gem.objects);
     75 	mutex_unlock(&qdev->gem.mutex);
     76 
     77 	return 0;
     78 }
     79 
     80 int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
     81 				      struct drm_file *file_priv,
     82 				      u32 domain,
     83 				      size_t size,
     84 				      struct qxl_surface *surf,
     85 				      struct qxl_bo **qobj,
     86 				      uint32_t *handle)
     87 {
     88 	struct drm_gem_object *gobj;
     89 	int r;
     90 
     91 	BUG_ON(!qobj);
     92 	BUG_ON(!handle);
     93 
     94 	r = qxl_gem_object_create(qdev, size, 0,
     95 				  domain,
     96 				  false, false, surf,
     97 				  &gobj);
     98 	if (r)
     99 		return -ENOMEM;
    100 	r = drm_gem_handle_create(file_priv, gobj, handle);
    101 	if (r)
    102 		return r;
    103 	/* drop reference from allocate - handle holds it now */
    104 	*qobj = gem_to_qxl_bo(gobj);
    105 	drm_gem_object_put_unlocked(gobj);
    106 	return 0;
    107 }
    108 
    109 int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
    110 {
    111 	return 0;
    112 }
    113 
    114 void qxl_gem_object_close(struct drm_gem_object *obj,
    115 			  struct drm_file *file_priv)
    116 {
    117 }
    118 
    119 void qxl_gem_init(struct qxl_device *qdev)
    120 {
    121 	INIT_LIST_HEAD(&qdev->gem.objects);
    122 }
    123 
    124 void qxl_gem_fini(struct qxl_device *qdev)
    125 {
    126 	qxl_bo_force_delete(qdev);
    127 }
    128