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 <subdev/gsp.h>
25
26 #include <nvif/class.h>
27
28 static void
tu102_vfn_intr_reset(struct nvkm_intr * intr,int leaf,u32 mask)29 tu102_vfn_intr_reset(struct nvkm_intr *intr, int leaf, u32 mask)
30 {
31 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
32
33 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1000 + (leaf * 4), mask);
34 }
35
36 static void
tu102_vfn_intr_allow(struct nvkm_intr * intr,int leaf,u32 mask)37 tu102_vfn_intr_allow(struct nvkm_intr *intr, int leaf, u32 mask)
38 {
39 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
40
41 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1200 + (leaf * 4), mask);
42 }
43
44 static void
tu102_vfn_intr_block(struct nvkm_intr * intr,int leaf,u32 mask)45 tu102_vfn_intr_block(struct nvkm_intr *intr, int leaf, u32 mask)
46 {
47 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
48
49 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1400 + (leaf * 4), mask);
50 }
51
52 static void
tu102_vfn_intr_rearm(struct nvkm_intr * intr)53 tu102_vfn_intr_rearm(struct nvkm_intr *intr)
54 {
55 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
56
57 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1608, 0x0000000f);
58 }
59
60 static void
tu102_vfn_intr_unarm(struct nvkm_intr * intr)61 tu102_vfn_intr_unarm(struct nvkm_intr *intr)
62 {
63 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
64
65 nvkm_wr32(vfn->subdev.device, vfn->addr.priv + 0x1610, 0x0000000f);
66 }
67
68 static bool
tu102_vfn_intr_pending(struct nvkm_intr * intr)69 tu102_vfn_intr_pending(struct nvkm_intr *intr)
70 {
71 struct nvkm_vfn *vfn = container_of(intr, typeof(*vfn), intr);
72 struct nvkm_device *device = vfn->subdev.device;
73 u32 intr_top = nvkm_rd32(device, vfn->addr.priv + 0x1600);
74 int pending = 0, leaf;
75
76 for (leaf = 0; leaf < 8; leaf++) {
77 if (intr_top & BIT(leaf / 2)) {
78 intr->stat[leaf] = nvkm_rd32(device, vfn->addr.priv + 0x1000 + (leaf * 4));
79 if (intr->stat[leaf])
80 pending++;
81 } else {
82 intr->stat[leaf] = 0;
83 }
84 }
85
86 return pending != 0;
87 }
88
89 const struct nvkm_intr_func
90 tu102_vfn_intr = {
91 .pending = tu102_vfn_intr_pending,
92 .unarm = tu102_vfn_intr_unarm,
93 .rearm = tu102_vfn_intr_rearm,
94 .block = tu102_vfn_intr_block,
95 .allow = tu102_vfn_intr_allow,
96 .reset = tu102_vfn_intr_reset,
97 };
98
99 static const struct nvkm_vfn_func
100 tu102_vfn = {
101 .intr = &tu102_vfn_intr,
102 .user = { 0x030000, 0x010000, { -1, -1, TURING_USERMODE_A } },
103 };
104
105 int
tu102_vfn_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_vfn ** pvfn)106 tu102_vfn_new(struct nvkm_device *device,
107 enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
108 {
109 if (nvkm_gsp_rm(device->gsp))
110 return r535_vfn_new(&tu102_vfn, device, type, inst, 0xb80000, pvfn);
111
112 return nvkm_vfn_new_(&tu102_vfn, device, type, inst, 0xb80000, pvfn);
113 }
114