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/therm.h>
28#include <subdev/timer.h>
29
30static int
31nv50_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
32{
33	struct nvkm_device *device = bus->subdev.device;
34	int i;
35
36	nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
37	nvkm_wr32(device, 0x001304, 0x00000000);
38	for (i = 0; i < size; i++)
39		nvkm_wr32(device, 0x001400 + (i * 4), data[i]);
40	nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
41	nvkm_wr32(device, 0x00130c, 0x00000003);
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
52void
53nv50_bus_intr(struct nvkm_bus *bus)
54{
55	struct nvkm_subdev *subdev = &bus->subdev;
56	struct nvkm_device *device = subdev->device;
57	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
58
59	if (stat & 0x00000008) {
60		u32 addr = nvkm_rd32(device, 0x009084);
61		u32 data = nvkm_rd32(device, 0x009088);
62
63		nvkm_error_ratelimited(subdev, "MMIO %s of %08x FAULT at %06x\n",
64				       (addr & 0x00000002) ? "write" : "read", data,
65				       (addr & 0x00fffffc));
66
67		stat &= ~0x00000008;
68		nvkm_wr32(device, 0x001100, 0x00000008);
69	}
70
71	if (stat & 0x00010000) {
72		struct nvkm_therm *therm = device->therm;
73		if (therm)
74			nvkm_subdev_intr(&therm->subdev);
75		stat &= ~0x00010000;
76		nvkm_wr32(device, 0x001100, 0x00010000);
77	}
78
79	if (stat) {
80		nvkm_error(subdev, "intr %08x\n", stat);
81		nvkm_mask(device, 0x001140, stat, 0);
82	}
83}
84
85void
86nv50_bus_init(struct nvkm_bus *bus)
87{
88	struct nvkm_device *device = bus->subdev.device;
89	nvkm_wr32(device, 0x001100, 0xffffffff);
90	nvkm_wr32(device, 0x001140, 0x00010008);
91}
92
93static const struct nvkm_bus_func
94nv50_bus = {
95	.init = nv50_bus_init,
96	.intr = nv50_bus_intr,
97	.hwsq_exec = nv50_bus_hwsq_exec,
98	.hwsq_size = 64,
99};
100
101int
102nv50_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
103	     struct nvkm_bus **pbus)
104{
105	return nvkm_bus_new_(&nv50_bus, device, type, inst, pbus);
106}
107