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_device.h> |
30 | #include <drm/ttm/ttm_placement.h> |
31 | #include <drm/ttm/ttm_resource.h> |
32 | #include <linux/slab.h> |
33 | |
34 | |
35 | static int vmw_sys_man_alloc(struct ttm_resource_manager *man, |
36 | struct ttm_buffer_object *bo, |
37 | const struct ttm_place *place, |
38 | struct ttm_resource **res) |
39 | { |
40 | *res = kzalloc(size: sizeof(**res), GFP_KERNEL); |
41 | if (!*res) |
42 | return -ENOMEM; |
43 | |
44 | ttm_resource_init(bo, place, res: *res); |
45 | return 0; |
46 | } |
47 | |
48 | static void vmw_sys_man_free(struct ttm_resource_manager *man, |
49 | struct ttm_resource *res) |
50 | { |
51 | ttm_resource_fini(man, res); |
52 | kfree(objp: res); |
53 | } |
54 | |
55 | static const struct ttm_resource_manager_func vmw_sys_manager_func = { |
56 | .alloc = vmw_sys_man_alloc, |
57 | .free = vmw_sys_man_free, |
58 | }; |
59 | |
60 | int vmw_sys_man_init(struct vmw_private *dev_priv) |
61 | { |
62 | struct ttm_device *bdev = &dev_priv->bdev; |
63 | struct ttm_resource_manager *man = |
64 | kzalloc(size: sizeof(*man), GFP_KERNEL); |
65 | |
66 | if (!man) |
67 | return -ENOMEM; |
68 | |
69 | man->use_tt = true; |
70 | man->func = &vmw_sys_manager_func; |
71 | |
72 | ttm_resource_manager_init(man, bdev, size: 0); |
73 | ttm_set_driver_manager(bdev, VMW_PL_SYSTEM, manager: man); |
74 | ttm_resource_manager_set_used(man, used: true); |
75 | return 0; |
76 | } |
77 | |
78 | void vmw_sys_man_fini(struct vmw_private *dev_priv) |
79 | { |
80 | struct ttm_resource_manager *man = ttm_manager_type(bdev: &dev_priv->bdev, |
81 | VMW_PL_SYSTEM); |
82 | |
83 | ttm_resource_manager_evict_all(bdev: &dev_priv->bdev, man); |
84 | |
85 | ttm_resource_manager_set_used(man, used: false); |
86 | ttm_resource_manager_cleanup(man); |
87 | |
88 | ttm_set_driver_manager(bdev: &dev_priv->bdev, VMW_PL_SYSTEM, NULL); |
89 | kfree(objp: man); |
90 | } |
91 | |