1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24#include "priv.h"
25
26#include <core/engine.h>
27
28/******************************************************************************
29 * instmem object base implementation
30 *****************************************************************************/
31
32void
33_nvkm_instobj_dtor(struct nvkm_object *object)
34{
35	struct nvkm_instmem *imem = nvkm_instmem(object);
36	struct nvkm_instobj *iobj = (void *)object;
37
38	mutex_lock(&nv_subdev(imem)->mutex);
39	list_del(&iobj->head);
40	mutex_unlock(&nv_subdev(imem)->mutex);
41
42	return nvkm_object_destroy(&iobj->base);
43}
44
45int
46nvkm_instobj_create_(struct nvkm_object *parent, struct nvkm_object *engine,
47		     struct nvkm_oclass *oclass, int length, void **pobject)
48{
49	struct nvkm_instmem *imem = nvkm_instmem(parent);
50	struct nvkm_instobj *iobj;
51	int ret;
52
53	ret = nvkm_object_create_(parent, engine, oclass, NV_MEMOBJ_CLASS,
54				  length, pobject);
55	iobj = *pobject;
56	if (ret)
57		return ret;
58
59	mutex_lock(&imem->base.mutex);
60	list_add(&iobj->head, &imem->list);
61	mutex_unlock(&imem->base.mutex);
62	return 0;
63}
64
65/******************************************************************************
66 * instmem subdev base implementation
67 *****************************************************************************/
68
69static int
70nvkm_instmem_alloc(struct nvkm_instmem *imem, struct nvkm_object *parent,
71		   u32 size, u32 align, struct nvkm_object **pobject)
72{
73	struct nvkm_instmem_impl *impl = (void *)imem->base.object.oclass;
74	struct nvkm_instobj_args args = { .size = size, .align = align };
75	return nvkm_object_ctor(parent, &parent->engine->subdev.object,
76				impl->instobj, &args, sizeof(args), pobject);
77}
78
79int
80_nvkm_instmem_fini(struct nvkm_object *object, bool suspend)
81{
82	struct nvkm_instmem *imem = (void *)object;
83	struct nvkm_instobj *iobj;
84	int i, ret = 0;
85
86	if (suspend) {
87		mutex_lock(&imem->base.mutex);
88		list_for_each_entry(iobj, &imem->list, head) {
89			iobj->suspend = vmalloc(iobj->size);
90			if (!iobj->suspend) {
91				ret = -ENOMEM;
92				break;
93			}
94
95			for (i = 0; i < iobj->size; i += 4)
96				iobj->suspend[i / 4] = nv_ro32(iobj, i);
97		}
98		mutex_unlock(&imem->base.mutex);
99		if (ret)
100			return ret;
101	}
102
103	return nvkm_subdev_fini(&imem->base, suspend);
104}
105
106int
107_nvkm_instmem_init(struct nvkm_object *object)
108{
109	struct nvkm_instmem *imem = (void *)object;
110	struct nvkm_instobj *iobj;
111	int ret, i;
112
113	ret = nvkm_subdev_init(&imem->base);
114	if (ret)
115		return ret;
116
117	mutex_lock(&imem->base.mutex);
118	list_for_each_entry(iobj, &imem->list, head) {
119		if (iobj->suspend) {
120			for (i = 0; i < iobj->size; i += 4)
121				nv_wo32(iobj, i, iobj->suspend[i / 4]);
122			vfree(iobj->suspend);
123			iobj->suspend = NULL;
124		}
125	}
126	mutex_unlock(&imem->base.mutex);
127	return 0;
128}
129
130int
131nvkm_instmem_create_(struct nvkm_object *parent, struct nvkm_object *engine,
132		     struct nvkm_oclass *oclass, int length, void **pobject)
133{
134	struct nvkm_instmem *imem;
135	int ret;
136
137	ret = nvkm_subdev_create_(parent, engine, oclass, 0, "INSTMEM",
138				  "instmem", length, pobject);
139	imem = *pobject;
140	if (ret)
141		return ret;
142
143	INIT_LIST_HEAD(&imem->list);
144	imem->alloc = nvkm_instmem_alloc;
145	return 0;
146}
147