1 /* $NetBSD: nouveau_nvkm_subdev_bus_gf100.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Nouveau Community
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Martin Peres <martin.peres@labri.fr>
25 * Ben Skeggs
26 */
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bus_gf100.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
29
30 #include "priv.h"
31
32 static void
gf100_bus_intr(struct nvkm_bus * bus)33 gf100_bus_intr(struct nvkm_bus *bus)
34 {
35 struct nvkm_subdev *subdev = &bus->subdev;
36 struct nvkm_device *device = subdev->device;
37 u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
38
39 if (stat & 0x0000000e) {
40 u32 addr = nvkm_rd32(device, 0x009084);
41 u32 data = nvkm_rd32(device, 0x009088);
42
43 nvkm_error(subdev,
44 "MMIO %s of %08x FAULT at %06x [ %s%s%s]\n",
45 (addr & 0x00000002) ? "write" : "read", data,
46 (addr & 0x00fffffc),
47 (stat & 0x00000002) ? "!ENGINE " : "",
48 (stat & 0x00000004) ? "IBUS " : "",
49 (stat & 0x00000008) ? "TIMEOUT " : "");
50
51 nvkm_wr32(device, 0x009084, 0x00000000);
52 nvkm_wr32(device, 0x001100, (stat & 0x0000000e));
53 stat &= ~0x0000000e;
54 }
55
56 if (stat) {
57 nvkm_error(subdev, "intr %08x\n", stat);
58 nvkm_mask(device, 0x001140, stat, 0x00000000);
59 }
60 }
61
62 static void
gf100_bus_init(struct nvkm_bus * bus)63 gf100_bus_init(struct nvkm_bus *bus)
64 {
65 struct nvkm_device *device = bus->subdev.device;
66 nvkm_wr32(device, 0x001100, 0xffffffff);
67 nvkm_wr32(device, 0x001140, 0x0000000e);
68 }
69
70 static const struct nvkm_bus_func
71 gf100_bus = {
72 .init = gf100_bus_init,
73 .intr = gf100_bus_intr,
74 };
75
76 int
gf100_bus_new(struct nvkm_device * device,int index,struct nvkm_bus ** pbus)77 gf100_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
78 {
79 return nvkm_bus_new_(&gf100_bus, device, index, pbus);
80 }
81