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, enum nvkm_subdev_type type, int inst,
62 	    struct nvkm_bus **pbus)
63 {
64 	return nvkm_bus_new_(&g94_bus, device, type, inst, pbus);
65 }
66