1 /* $NetBSD: nouveau_nvkm_subdev_bus_nv50.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_nv50.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
29
30 #include "priv.h"
31
32 #include <subdev/therm.h>
33 #include <subdev/timer.h>
34
35 static int
nv50_bus_hwsq_exec(struct nvkm_bus * bus,u32 * data,u32 size)36 nv50_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
37 {
38 struct nvkm_device *device = bus->subdev.device;
39 int i;
40
41 nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
42 nvkm_wr32(device, 0x001304, 0x00000000);
43 for (i = 0; i < size; i++)
44 nvkm_wr32(device, 0x001400 + (i * 4), data[i]);
45 nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
46 nvkm_wr32(device, 0x00130c, 0x00000003);
47
48 if (nvkm_msec(device, 2000,
49 if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
50 break;
51 ) < 0)
52 return -ETIMEDOUT;
53
54 return 0;
55 }
56
57 void
nv50_bus_intr(struct nvkm_bus * bus)58 nv50_bus_intr(struct nvkm_bus *bus)
59 {
60 struct nvkm_subdev *subdev = &bus->subdev;
61 struct nvkm_device *device = subdev->device;
62 u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
63
64 if (stat & 0x00000008) {
65 u32 addr = nvkm_rd32(device, 0x009084);
66 u32 data = nvkm_rd32(device, 0x009088);
67
68 nvkm_error(subdev, "MMIO %s of %08x FAULT at %06x\n",
69 (addr & 0x00000002) ? "write" : "read", data,
70 (addr & 0x00fffffc));
71
72 stat &= ~0x00000008;
73 nvkm_wr32(device, 0x001100, 0x00000008);
74 }
75
76 if (stat & 0x00010000) {
77 struct nvkm_therm *therm = device->therm;
78 if (therm)
79 nvkm_subdev_intr(&therm->subdev);
80 stat &= ~0x00010000;
81 nvkm_wr32(device, 0x001100, 0x00010000);
82 }
83
84 if (stat) {
85 nvkm_error(subdev, "intr %08x\n", stat);
86 nvkm_mask(device, 0x001140, stat, 0);
87 }
88 }
89
90 void
nv50_bus_init(struct nvkm_bus * bus)91 nv50_bus_init(struct nvkm_bus *bus)
92 {
93 struct nvkm_device *device = bus->subdev.device;
94 nvkm_wr32(device, 0x001100, 0xffffffff);
95 nvkm_wr32(device, 0x001140, 0x00010008);
96 }
97
98 static const struct nvkm_bus_func
99 nv50_bus = {
100 .init = nv50_bus_init,
101 .intr = nv50_bus_intr,
102 .hwsq_exec = nv50_bus_hwsq_exec,
103 .hwsq_size = 64,
104 };
105
106 int
nv50_bus_new(struct nvkm_device * device,int index,struct nvkm_bus ** pbus)107 nv50_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
108 {
109 return nvkm_bus_new_(&nv50_bus, device, index, pbus);
110 }
111