1 /*
2 * Copyright 2021 Red Hat Inc.
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 #include "priv.h"
23
24 #include <nvif/class.h>
25
26 static void
tu102_vfn_intr_reset(struct nvkm_intr * intr,int leaf,u32 mask)27 tu102_vfn_intr_reset(struct nvkm_intr *intr, int leaf, u32 mask)
28 {
29 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
30
31 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1000 + (leaf * 4), mask);
32 }
33
34 static void
tu102_vfn_intr_allow(struct nvkm_intr * intr,int leaf,u32 mask)35 tu102_vfn_intr_allow(struct nvkm_intr *intr, int leaf, u32 mask)
36 {
37 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
38
39 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1200 + (leaf * 4), mask);
40 }
41
42 static void
tu102_vfn_intr_block(struct nvkm_intr * intr,int leaf,u32 mask)43 tu102_vfn_intr_block(struct nvkm_intr *intr, int leaf, u32 mask)
44 {
45 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
46
47 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1400 + (leaf * 4), mask);
48 }
49
50 static void
tu102_vfn_intr_rearm(struct nvkm_intr * intr)51 tu102_vfn_intr_rearm(struct nvkm_intr *intr)
52 {
53 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
54
55 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1608, 0x0000000f);
56 }
57
58 static void
tu102_vfn_intr_unarm(struct nvkm_intr * intr)59 tu102_vfn_intr_unarm(struct nvkm_intr *intr)
60 {
61 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
62
63 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1610, 0x0000000f);
64 }
65
66 static bool
tu102_vfn_intr_pending(struct nvkm_intr * intr)67 tu102_vfn_intr_pending(struct nvkm_intr *intr)
68 {
69 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
70 struct nvkm_device *device = vfn->subdev.device;
71 u32 intr_top = nvkm_rd32(device, vfn->addr.priv + 0x1600);
72 int pending = 0, leaf;
73
74 for (leaf = 0; leaf < 8; leaf++) {
75 if (intr_top & BIT(leaf / 2)) {
76 intr->stat[leaf] = nvkm_rd32(device, vfn->addr.priv + 0x1000 + (leaf * 4));
77 if (intr->stat[leaf])
78 pending++;
79 } else {
80 intr->stat[leaf] = 0;
81 }
82 }
83
84 return pending != 0;
85 }
86
87 const struct nvkm_intr_func
88 tu102_vfn_intr = {
89 .pending = tu102_vfn_intr_pending,
90 .unarm = tu102_vfn_intr_unarm,
91 .rearm = tu102_vfn_intr_rearm,
92 .block = tu102_vfn_intr_block,
93 .allow = tu102_vfn_intr_allow,
94 .reset = tu102_vfn_intr_reset,
95 };
96
97 static const struct nvkm_vfn_func
98 tu102_vfn = {
99 .intr = &tu102_vfn_intr,
100 .user = { 0x030000, 0x010000, { -1, -1, TURING_USERMODE_A } },
101 };
102
103 int
tu102_vfn_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_vfn ** pvfn)104 tu102_vfn_new(struct nvkm_device *device,
105 enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
106 {
107 return nvkm_vfn_new_(&tu102_vfn, device, type, inst, 0xb80000, pvfn);
108 }
109