2 * Copyright 2014 Martin Peres
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 * Authors: Martin Peres
27 struct g80_fuse_priv {
28 struct nouveau_fuse base;
30 spinlock_t fuse_enable_lock;
34 g80_fuse_rd32(struct nouveau_object *object, u64 addr)
36 struct g80_fuse_priv *priv = (void *)object;
40 spin_lock_irqsave(&priv->fuse_enable_lock, flags);
42 /* racy if another part of nouveau start writing to this reg */
43 fuse_enable = nv_mask(priv, 0x1084, 0x800, 0x800);
44 val = nv_rd32(priv, 0x21000 + addr);
45 nv_wr32(priv, 0x1084, fuse_enable);
47 spin_unlock_irqrestore(&priv->fuse_enable_lock, flags);
54 g80_fuse_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
55 struct nouveau_oclass *oclass, void *data, u32 size,
56 struct nouveau_object **pobject)
58 struct g80_fuse_priv *priv;
61 ret = nouveau_fuse_create(parent, engine, oclass, &priv);
62 *pobject = nv_object(priv);
66 spin_lock_init(&priv->fuse_enable_lock);
73 .handle = NV_SUBDEV(FUSE, 0x50),
74 .ofuncs = &(struct nouveau_ofuncs) {
75 .ctor = g80_fuse_ctor,
76 .dtor = _nouveau_fuse_dtor,
77 .init = _nouveau_fuse_init,
78 .fini = _nouveau_fuse_fini,
79 .rd32 = g80_fuse_rd32,