1 | /* $NetBSD: nouveau_subdev_instmem_base.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 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: Ben Skeggs |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_instmem_base.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $" ); |
29 | |
30 | #include "priv.h" |
31 | |
32 | /****************************************************************************** |
33 | * instmem object base implementation |
34 | *****************************************************************************/ |
35 | |
36 | void |
37 | _nouveau_instobj_dtor(struct nouveau_object *object) |
38 | { |
39 | struct nouveau_instmem *imem = (void *)object->engine; |
40 | struct nouveau_instobj *iobj = (void *)object; |
41 | |
42 | mutex_lock(&nv_subdev(imem)->mutex); |
43 | list_del(&iobj->head); |
44 | mutex_unlock(&nv_subdev(imem)->mutex); |
45 | |
46 | return nouveau_object_destroy(&iobj->base); |
47 | } |
48 | |
49 | int |
50 | nouveau_instobj_create_(struct nouveau_object *parent, |
51 | struct nouveau_object *engine, |
52 | struct nouveau_oclass *oclass, |
53 | int length, void **pobject) |
54 | { |
55 | struct nouveau_instmem *imem = (void *)engine; |
56 | struct nouveau_instobj *iobj; |
57 | int ret; |
58 | |
59 | ret = nouveau_object_create_(parent, engine, oclass, NV_MEMOBJ_CLASS, |
60 | length, pobject); |
61 | iobj = *pobject; |
62 | if (ret) |
63 | return ret; |
64 | |
65 | mutex_lock(&imem->base.mutex); |
66 | list_add(&iobj->head, &imem->list); |
67 | mutex_unlock(&imem->base.mutex); |
68 | return 0; |
69 | } |
70 | |
71 | /****************************************************************************** |
72 | * instmem subdev base implementation |
73 | *****************************************************************************/ |
74 | |
75 | static int |
76 | nouveau_instmem_alloc(struct nouveau_instmem *imem, |
77 | struct nouveau_object *parent, u32 size, u32 align, |
78 | struct nouveau_object **pobject) |
79 | { |
80 | struct nouveau_object *engine = nv_object(imem); |
81 | struct nouveau_instmem_impl *impl = (void *)engine->oclass; |
82 | struct nouveau_instobj_args args = { .size = size, .align = align }; |
83 | return nouveau_object_ctor(parent, engine, impl->instobj, &args, |
84 | sizeof(args), pobject); |
85 | } |
86 | |
87 | int |
88 | _nouveau_instmem_fini(struct nouveau_object *object, bool suspend) |
89 | { |
90 | struct nouveau_instmem *imem = (void *)object; |
91 | struct nouveau_instobj *iobj; |
92 | int i, ret = 0; |
93 | |
94 | if (suspend) { |
95 | mutex_lock(&imem->base.mutex); |
96 | |
97 | list_for_each_entry(iobj, &imem->list, head) { |
98 | iobj->suspend = vmalloc(iobj->size); |
99 | if (!iobj->suspend) { |
100 | ret = -ENOMEM; |
101 | break; |
102 | } |
103 | |
104 | for (i = 0; i < iobj->size; i += 4) |
105 | iobj->suspend[i / 4] = nv_ro32(iobj, i); |
106 | } |
107 | |
108 | mutex_unlock(&imem->base.mutex); |
109 | |
110 | if (ret) |
111 | return ret; |
112 | } |
113 | |
114 | return nouveau_subdev_fini(&imem->base, suspend); |
115 | } |
116 | |
117 | int |
118 | _nouveau_instmem_init(struct nouveau_object *object) |
119 | { |
120 | struct nouveau_instmem *imem = (void *)object; |
121 | struct nouveau_instobj *iobj; |
122 | int ret, i; |
123 | |
124 | ret = nouveau_subdev_init(&imem->base); |
125 | if (ret) |
126 | return ret; |
127 | |
128 | mutex_lock(&imem->base.mutex); |
129 | |
130 | list_for_each_entry(iobj, &imem->list, head) { |
131 | if (iobj->suspend) { |
132 | for (i = 0; i < iobj->size; i += 4) |
133 | nv_wo32(iobj, i, iobj->suspend[i / 4]); |
134 | vfree(iobj->suspend); |
135 | iobj->suspend = NULL; |
136 | } |
137 | } |
138 | |
139 | mutex_unlock(&imem->base.mutex); |
140 | |
141 | return 0; |
142 | } |
143 | |
144 | int |
145 | nouveau_instmem_create_(struct nouveau_object *parent, |
146 | struct nouveau_object *engine, |
147 | struct nouveau_oclass *oclass, |
148 | int length, void **pobject) |
149 | { |
150 | struct nouveau_instmem *imem; |
151 | int ret; |
152 | |
153 | ret = nouveau_subdev_create_(parent, engine, oclass, 0, |
154 | "INSTMEM" , "instmem" , length, pobject); |
155 | imem = *pobject; |
156 | if (ret) |
157 | return ret; |
158 | |
159 | INIT_LIST_HEAD(&imem->list); |
160 | imem->alloc = nouveau_instmem_alloc; |
161 | return 0; |
162 | } |
163 | |