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/gsp.h>
28
29static void
30gf100_bus_intr(struct nvkm_bus *bus)
31{
32	struct nvkm_subdev *subdev = &bus->subdev;
33	struct nvkm_device *device = subdev->device;
34	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
35
36	if (stat & 0x0000000e) {
37		u32 addr = nvkm_rd32(device, 0x009084);
38		u32 data = nvkm_rd32(device, 0x009088);
39
40		nvkm_error_ratelimited(subdev,
41				       "MMIO %s of %08x FAULT at %06x [ %s%s%s]\n",
42				       (addr & 0x00000002) ? "write" : "read", data,
43				       (addr & 0x00fffffc),
44				       (stat & 0x00000002) ? "!ENGINE " : "",
45				       (stat & 0x00000004) ? "PRIVRING " : "",
46				       (stat & 0x00000008) ? "TIMEOUT " : "");
47
48		nvkm_wr32(device, 0x009084, 0x00000000);
49		nvkm_wr32(device, 0x001100, (stat & 0x0000000e));
50		stat &= ~0x0000000e;
51	}
52
53	if (stat) {
54		nvkm_error(subdev, "intr %08x\n", stat);
55		nvkm_mask(device, 0x001140, stat, 0x00000000);
56	}
57}
58
59static void
60gf100_bus_init(struct nvkm_bus *bus)
61{
62	struct nvkm_device *device = bus->subdev.device;
63	nvkm_wr32(device, 0x001100, 0xffffffff);
64	nvkm_wr32(device, 0x001140, 0x0000000e);
65}
66
67static const struct nvkm_bus_func
68gf100_bus = {
69	.init = gf100_bus_init,
70	.intr = gf100_bus_intr,
71};
72
73int
74gf100_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
75	      struct nvkm_bus **pbus)
76{
77	if (nvkm_gsp_rm(device->gsp))
78		return -ENODEV;
79
80	return nvkm_bus_new_(&gf100_bus, device, type, inst, pbus);
81}
82