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 #include <subdev/gpio.h>
28 #include <subdev/therm.h>
29 
30 static void
31 nv31_bus_intr(struct nvkm_subdev *subdev)
32 {
33 	struct nvkm_device *device = subdev->device;
34 	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
35 	u32 gpio = nvkm_rd32(device, 0x001104) & nvkm_rd32(device, 0x001144);
36 
37 	if (gpio) {
38 		struct nvkm_gpio *gpio = device->gpio;
39 		if (gpio && gpio->subdev.intr)
40 			gpio->subdev.intr(&gpio->subdev);
41 	}
42 
43 	if (stat & 0x00000008) {  /* NV41- */
44 		u32 addr = nvkm_rd32(device, 0x009084);
45 		u32 data = nvkm_rd32(device, 0x009088);
46 
47 		nvkm_error(subdev, "MMIO %s of %08x FAULT at %06x\n",
48 			   (addr & 0x00000002) ? "write" : "read", data,
49 			   (addr & 0x00fffffc));
50 
51 		stat &= ~0x00000008;
52 		nvkm_wr32(device, 0x001100, 0x00000008);
53 	}
54 
55 	if (stat & 0x00070000) {
56 		struct nvkm_therm *therm = device->therm;
57 		if (therm && therm->subdev.intr)
58 			therm->subdev.intr(&therm->subdev);
59 		stat &= ~0x00070000;
60 		nvkm_wr32(device, 0x001100, 0x00070000);
61 	}
62 
63 	if (stat) {
64 		nvkm_error(subdev, "intr %08x\n", stat);
65 		nvkm_mask(device, 0x001140, stat, 0x00000000);
66 	}
67 }
68 
69 static int
70 nv31_bus_init(struct nvkm_object *object)
71 {
72 	struct nvkm_bus *bus = (void *)object;
73 	struct nvkm_device *device = bus->subdev.device;
74 	int ret;
75 
76 	ret = nvkm_bus_init(bus);
77 	if (ret)
78 		return ret;
79 
80 	nvkm_wr32(device, 0x001100, 0xffffffff);
81 	nvkm_wr32(device, 0x001140, 0x00070008);
82 	return 0;
83 }
84 
85 struct nvkm_oclass *
86 nv31_bus_oclass = &(struct nv04_bus_impl) {
87 	.base.handle = NV_SUBDEV(BUS, 0x31),
88 	.base.ofuncs = &(struct nvkm_ofuncs) {
89 		.ctor = nv04_bus_ctor,
90 		.dtor = _nvkm_bus_dtor,
91 		.init = nv31_bus_init,
92 		.fini = _nvkm_bus_fini,
93 	},
94 	.intr = nv31_bus_intr,
95 }.base;
96