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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 OR MIT */
2/**************************************************************************
3 *
4 * Copyright 2012-2014 VMware, Inc., Palo Alto, CA., USA
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#ifndef _VMWGFX_RESOURCE_PRIV_H_
29#define _VMWGFX_RESOURCE_PRIV_H_
30
31#include "vmwgfx_drv.h"
32
33/*
34 * Extra memory required by the resource id's ida storage, which is allocated
35 * separately from the base object itself. We estimate an on-average 128 bytes
36 * per ida.
37 */
38#define VMW_IDA_ACC_SIZE 128
39
40enum vmw_cmdbuf_res_state {
41 VMW_CMDBUF_RES_COMMITTED,
42 VMW_CMDBUF_RES_ADD,
43 VMW_CMDBUF_RES_DEL
44};
45
46/**
47 * struct vmw_user_resource_conv - Identify a derived user-exported resource
48 * type and provide a function to convert its ttm_base_object pointer to
49 * a struct vmw_resource
50 */
51struct vmw_user_resource_conv {
52 enum ttm_object_type object_type;
53 struct vmw_resource *(*base_obj_to_res)(struct ttm_base_object *base);
54 void (*res_free) (struct vmw_resource *res);
55};
56
57/**
58 * struct vmw_res_func - members and functions common for a resource type
59 *
60 * @res_type: Enum that identifies the lru list to use for eviction.
61 * @needs_backup: Whether the resource is guest-backed and needs
62 * persistent buffer storage.
63 * @type_name: String that identifies the resource type.
64 * @backup_placement: TTM placement for backup buffers.
65 * @may_evict Whether the resource may be evicted.
66 * @create: Create a hardware resource.
67 * @destroy: Destroy a hardware resource.
68 * @bind: Bind a hardware resource to persistent buffer storage.
69 * @unbind: Unbind a hardware resource from persistent
70 * buffer storage.
71 * @commit_notify: If the resource is a command buffer managed resource,
72 * callback to notify that a define or remove command
73 * has been committed to the device.
74 */
75struct vmw_res_func {
76 enum vmw_res_type res_type;
77 bool needs_backup;
78 const char *type_name;
79 struct ttm_placement *backup_placement;
80 bool may_evict;
81
82 int (*create) (struct vmw_resource *res);
83 int (*destroy) (struct vmw_resource *res);
84 int (*bind) (struct vmw_resource *res,
85 struct ttm_validate_buffer *val_buf);
86 int (*unbind) (struct vmw_resource *res,
87 bool readback,
88 struct ttm_validate_buffer *val_buf);
89 void (*commit_notify)(struct vmw_resource *res,
90 enum vmw_cmdbuf_res_state state);
91};
92
93/**
94 * struct vmw_simple_resource_func - members and functions common for the
95 * simple resource helpers.
96 * @res_func: struct vmw_res_func as described above.
97 * @ttm_res_type: TTM resource type used for handle recognition.
98 * @size: Size of the simple resource information struct.
99 * @init: Initialize the simple resource information.
100 * @hw_destroy: A resource hw_destroy function.
101 * @set_arg_handle: Set the handle output argument of the ioctl create struct.
102 */
103struct vmw_simple_resource_func {
104 const struct vmw_res_func res_func;
105 int ttm_res_type;
106 size_t size;
107 int (*init)(struct vmw_resource *res, void *data);
108 void (*hw_destroy)(struct vmw_resource *res);
109 void (*set_arg_handle)(void *data, u32 handle);
110};
111
112/**
113 * struct vmw_simple_resource - Kernel only side simple resource
114 * @res: The resource we derive from.
115 * @func: The method and member virtual table.
116 */
117struct vmw_simple_resource {
118 struct vmw_resource res;
119 const struct vmw_simple_resource_func *func;
120};
121
122int vmw_resource_alloc_id(struct vmw_resource *res);
123void vmw_resource_release_id(struct vmw_resource *res);
124int vmw_resource_init(struct vmw_private *dev_priv, struct vmw_resource *res,
125 bool delay_id,
126 void (*res_free) (struct vmw_resource *res),
127 const struct vmw_res_func *func);
128int
129vmw_simple_resource_create_ioctl(struct drm_device *dev,
130 void *data,
131 struct drm_file *file_priv,
132 const struct vmw_simple_resource_func *func);
133struct vmw_resource *
134vmw_simple_resource_lookup(struct ttm_object_file *tfile,
135 uint32_t handle,
136 const struct vmw_simple_resource_func *func);
137#endif