1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2 /*
3 * Copyright 2021 VMware, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person
6 * obtaining a copy of this software and associated documentation
7 * files (the "Software"), to deal in the Software without
8 * restriction, including without limitation the rights to use, copy,
9 * modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 */
26
27 #include "vmwgfx_drv.h"
28
29 #include <drm/ttm/ttm_bo_driver.h>
30 #include <drm/ttm/ttm_device.h>
31 #include <drm/ttm/ttm_placement.h>
32 #include <drm/ttm/ttm_resource.h>
33 #include <linux/slab.h>
34
35
vmw_sys_man_alloc(struct ttm_resource_manager * man,struct ttm_buffer_object * bo,const struct ttm_place * place,struct ttm_resource ** res)36 static int vmw_sys_man_alloc(struct ttm_resource_manager *man,
37 struct ttm_buffer_object *bo,
38 const struct ttm_place *place,
39 struct ttm_resource **res)
40 {
41 *res = kzalloc(sizeof(**res), GFP_KERNEL);
42 if (!*res)
43 return -ENOMEM;
44
45 ttm_resource_init(bo, place, *res);
46 return 0;
47 }
48
vmw_sys_man_free(struct ttm_resource_manager * man,struct ttm_resource * res)49 static void vmw_sys_man_free(struct ttm_resource_manager *man,
50 struct ttm_resource *res)
51 {
52 ttm_resource_fini(man, res);
53 kfree(res);
54 }
55
56 static const struct ttm_resource_manager_func vmw_sys_manager_func = {
57 .alloc = vmw_sys_man_alloc,
58 .free = vmw_sys_man_free,
59 };
60
vmw_sys_man_init(struct vmw_private * dev_priv)61 int vmw_sys_man_init(struct vmw_private *dev_priv)
62 {
63 struct ttm_device *bdev = &dev_priv->bdev;
64 struct ttm_resource_manager *man =
65 kzalloc(sizeof(*man), GFP_KERNEL);
66
67 if (!man)
68 return -ENOMEM;
69
70 man->use_tt = true;
71 man->func = &vmw_sys_manager_func;
72
73 ttm_resource_manager_init(man, bdev, 0);
74 ttm_set_driver_manager(bdev, VMW_PL_SYSTEM, man);
75 ttm_resource_manager_set_used(man, true);
76 return 0;
77 }
78
vmw_sys_man_fini(struct vmw_private * dev_priv)79 void vmw_sys_man_fini(struct vmw_private *dev_priv)
80 {
81 struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev,
82 VMW_PL_SYSTEM);
83
84 ttm_resource_manager_evict_all(&dev_priv->bdev, man);
85
86 ttm_resource_manager_set_used(man, false);
87 ttm_resource_manager_cleanup(man);
88
89 ttm_set_driver_manager(&dev_priv->bdev, VMW_PL_SYSTEM, NULL);
90 kfree(man);
91 }
92