1 | /* $NetBSD: nouveau_subdev_instmem_nv50.c,v 1.1.1.1 2014/08/06 12:36:31 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_nv50.c,v 1.1.1.1 2014/08/06 12:36:31 riastradh Exp $" ); |
29 | |
30 | #include <subdev/fb.h> |
31 | #include <core/mm.h> |
32 | |
33 | #include "priv.h" |
34 | |
35 | struct nv50_instmem_priv { |
36 | struct nouveau_instmem base; |
37 | spinlock_t lock; |
38 | u64 addr; |
39 | }; |
40 | |
41 | struct nv50_instobj_priv { |
42 | struct nouveau_instobj base; |
43 | struct nouveau_mem *mem; |
44 | }; |
45 | |
46 | /****************************************************************************** |
47 | * instmem object implementation |
48 | *****************************************************************************/ |
49 | |
50 | static u32 |
51 | nv50_instobj_rd32(struct nouveau_object *object, u64 offset) |
52 | { |
53 | struct nv50_instmem_priv *priv = (void *)object->engine; |
54 | struct nv50_instobj_priv *node = (void *)object; |
55 | unsigned long flags; |
56 | u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; |
57 | u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; |
58 | u32 data; |
59 | |
60 | spin_lock_irqsave(&priv->lock, flags); |
61 | if (unlikely(priv->addr != base)) { |
62 | nv_wr32(priv, 0x001700, base >> 16); |
63 | priv->addr = base; |
64 | } |
65 | data = nv_rd32(priv, 0x700000 + addr); |
66 | spin_unlock_irqrestore(&priv->lock, flags); |
67 | return data; |
68 | } |
69 | |
70 | static void |
71 | nv50_instobj_wr32(struct nouveau_object *object, u64 offset, u32 data) |
72 | { |
73 | struct nv50_instmem_priv *priv = (void *)object->engine; |
74 | struct nv50_instobj_priv *node = (void *)object; |
75 | unsigned long flags; |
76 | u64 base = (node->mem->offset + offset) & 0xffffff00000ULL; |
77 | u64 addr = (node->mem->offset + offset) & 0x000000fffffULL; |
78 | |
79 | spin_lock_irqsave(&priv->lock, flags); |
80 | if (unlikely(priv->addr != base)) { |
81 | nv_wr32(priv, 0x001700, base >> 16); |
82 | priv->addr = base; |
83 | } |
84 | nv_wr32(priv, 0x700000 + addr, data); |
85 | spin_unlock_irqrestore(&priv->lock, flags); |
86 | } |
87 | |
88 | static void |
89 | nv50_instobj_dtor(struct nouveau_object *object) |
90 | { |
91 | struct nv50_instobj_priv *node = (void *)object; |
92 | struct nouveau_fb *pfb = nouveau_fb(object); |
93 | pfb->ram->put(pfb, &node->mem); |
94 | nouveau_instobj_destroy(&node->base); |
95 | } |
96 | |
97 | static int |
98 | nv50_instobj_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
99 | struct nouveau_oclass *oclass, void *data, u32 size, |
100 | struct nouveau_object **pobject) |
101 | { |
102 | struct nouveau_fb *pfb = nouveau_fb(parent); |
103 | struct nouveau_instobj_args *args = data; |
104 | struct nv50_instobj_priv *node; |
105 | int ret; |
106 | |
107 | args->size = max((args->size + 4095) & ~4095, (u32)4096); |
108 | args->align = max((args->align + 4095) & ~4095, (u32)4096); |
109 | |
110 | ret = nouveau_instobj_create(parent, engine, oclass, &node); |
111 | *pobject = nv_object(node); |
112 | if (ret) |
113 | return ret; |
114 | |
115 | ret = pfb->ram->get(pfb, args->size, args->align, 0, 0x800, &node->mem); |
116 | if (ret) |
117 | return ret; |
118 | |
119 | node->base.addr = node->mem->offset; |
120 | node->base.size = node->mem->size << 12; |
121 | node->mem->page_shift = 12; |
122 | return 0; |
123 | } |
124 | |
125 | static struct nouveau_instobj_impl |
126 | nv50_instobj_oclass = { |
127 | .base.ofuncs = &(struct nouveau_ofuncs) { |
128 | .ctor = nv50_instobj_ctor, |
129 | .dtor = nv50_instobj_dtor, |
130 | .init = _nouveau_instobj_init, |
131 | .fini = _nouveau_instobj_fini, |
132 | .rd32 = nv50_instobj_rd32, |
133 | .wr32 = nv50_instobj_wr32, |
134 | }, |
135 | }; |
136 | |
137 | /****************************************************************************** |
138 | * instmem subdev implementation |
139 | *****************************************************************************/ |
140 | |
141 | static int |
142 | nv50_instmem_fini(struct nouveau_object *object, bool suspend) |
143 | { |
144 | struct nv50_instmem_priv *priv = (void *)object; |
145 | priv->addr = ~0ULL; |
146 | return nouveau_instmem_fini(&priv->base, suspend); |
147 | } |
148 | |
149 | static int |
150 | nv50_instmem_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
151 | struct nouveau_oclass *oclass, void *data, u32 size, |
152 | struct nouveau_object **pobject) |
153 | { |
154 | struct nv50_instmem_priv *priv; |
155 | int ret; |
156 | |
157 | ret = nouveau_instmem_create(parent, engine, oclass, &priv); |
158 | *pobject = nv_object(priv); |
159 | if (ret) |
160 | return ret; |
161 | |
162 | spin_lock_init(&priv->lock); |
163 | return 0; |
164 | } |
165 | |
166 | struct nouveau_oclass * |
167 | nv50_instmem_oclass = &(struct nouveau_instmem_impl) { |
168 | .base.handle = NV_SUBDEV(INSTMEM, 0x50), |
169 | .base.ofuncs = &(struct nouveau_ofuncs) { |
170 | .ctor = nv50_instmem_ctor, |
171 | .dtor = _nouveau_instmem_dtor, |
172 | .init = _nouveau_instmem_init, |
173 | .fini = nv50_instmem_fini, |
174 | }, |
175 | .instobj = &nv50_instobj_oclass.base, |
176 | }.base; |
177 | |