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 "nv04.h"
26 
27 static void
28 gf100_bus_intr(struct nvkm_subdev *subdev)
29 {
30 	struct nvkm_device *device = subdev->device;
31 	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
32 
33 	if (stat & 0x0000000e) {
34 		u32 addr = nvkm_rd32(device, 0x009084);
35 		u32 data = nvkm_rd32(device, 0x009088);
36 
37 		nvkm_error(subdev,
38 			   "MMIO %s of %08x FAULT at %06x [ %s%s%s]\n",
39 			   (addr & 0x00000002) ? "write" : "read", data,
40 			   (addr & 0x00fffffc),
41 			   (stat & 0x00000002) ? "!ENGINE " : "",
42 			   (stat & 0x00000004) ? "IBUS " : "",
43 			   (stat & 0x00000008) ? "TIMEOUT " : "");
44 
45 		nvkm_wr32(device, 0x009084, 0x00000000);
46 		nvkm_wr32(device, 0x001100, (stat & 0x0000000e));
47 		stat &= ~0x0000000e;
48 	}
49 
50 	if (stat) {
51 		nvkm_error(subdev, "intr %08x\n", stat);
52 		nvkm_mask(device, 0x001140, stat, 0x00000000);
53 	}
54 }
55 
56 static int
57 gf100_bus_init(struct nvkm_object *object)
58 {
59 	struct nvkm_bus *bus = (void *)object;
60 	struct nvkm_device *device = bus->subdev.device;
61 	int ret;
62 
63 	ret = nvkm_bus_init(bus);
64 	if (ret)
65 		return ret;
66 
67 	nvkm_wr32(device, 0x001100, 0xffffffff);
68 	nvkm_wr32(device, 0x001140, 0x0000000e);
69 	return 0;
70 }
71 
72 struct nvkm_oclass *
73 gf100_bus_oclass = &(struct nv04_bus_impl) {
74 	.base.handle = NV_SUBDEV(BUS, 0xc0),
75 	.base.ofuncs = &(struct nvkm_ofuncs) {
76 		.ctor = nv04_bus_ctor,
77 		.dtor = _nvkm_bus_dtor,
78 		.init = gf100_bus_init,
79 		.fini = _nvkm_bus_fini,
80 	},
81 	.intr = gf100_bus_intr,
82 }.base;
83