1 /*
2 * Copyright 2012 Nouveau Community
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: Martin Peres <martin.peres@labri.fr>
23 * Ben Skeggs
24 */
25 #include "priv.h"
26
27 #include <subdev/timer.h>
28
29 static int
30 g94_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
31 {
32 struct nvkm_device *device = bus->subdev.device;
33 int i;
34
35 nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
36 nvkm_wr32(device, 0x001304, 0x00000000);
37 nvkm_wr32(device, 0x001318, 0x00000000);
38 for (i = 0; i < size; i++)
39 nvkm_wr32(device, 0x080000 + (i * 4), data[i]);
40 nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
41 nvkm_wr32(device, 0x00130c, 0x00000001);
42
43 if (nvkm_msec(device, 2000,
44 if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
45 break;
46 ) < 0)
47 return -ETIMEDOUT;
48
49 return 0;
50 }
51
52 static const struct nvkm_bus_func
53 g94_bus = {
54 .init = nv50_bus_init,
55 .intr = nv50_bus_intr,
56 .hwsq_exec = g94_bus_hwsq_exec,
57 .hwsq_size = 128,
58 };
59
60 int
61 g94_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
62 {
63 return nvkm_bus_new_(&g94_bus, device, index, pbus);
64 }