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cc362050 BS |
1 | /* |
2 | * Copyright 2018 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 <nvif/fifo.h> | |
23 | ||
24 | static int | |
25 | nvif_fifo_runlists(struct nvif_device *device) | |
26 | { | |
27 | struct nvif_object *object = &device->object; | |
28 | struct { | |
29 | struct nv_device_info_v1 m; | |
30 | struct { | |
31 | struct nv_device_info_v1_data runlists; | |
32 | struct nv_device_info_v1_data runlist[64]; | |
33 | } v; | |
34 | } *a; | |
35 | int ret, i; | |
36 | ||
37 | if (device->runlist) | |
38 | return 0; | |
39 | ||
40 | if (!(a = kmalloc(sizeof(*a), GFP_KERNEL))) | |
41 | return -ENOMEM; | |
42 | a->m.version = 1; | |
43 | a->m.count = sizeof(a->v) / sizeof(a->v.runlists); | |
44 | a->v.runlists.mthd = NV_DEVICE_FIFO_RUNLISTS; | |
45 | for (i = 0; i < ARRAY_SIZE(a->v.runlist); i++) | |
46 | a->v.runlist[i].mthd = NV_DEVICE_FIFO_RUNLIST_ENGINES(i); | |
47 | ||
48 | ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, a, sizeof(*a)); | |
49 | if (ret) | |
50 | goto done; | |
51 | ||
52 | device->runlists = fls64(a->v.runlists.data); | |
6396bb22 KC |
53 | device->runlist = kcalloc(device->runlists, sizeof(*device->runlist), |
54 | GFP_KERNEL); | |
cc362050 BS |
55 | if (!device->runlist) { |
56 | ret = -ENOMEM; | |
57 | goto done; | |
58 | } | |
59 | ||
60 | for (i = 0; i < device->runlists; i++) { | |
61 | if (a->v.runlists.data & BIT_ULL(i)) | |
62 | device->runlist[i].engines = a->v.runlist[i].data; | |
63 | } | |
64 | ||
65 | done: | |
66 | kfree(a); | |
67 | return ret; | |
68 | } | |
69 | ||
70 | u64 | |
71 | nvif_fifo_runlist(struct nvif_device *device, u64 engine) | |
72 | { | |
73 | struct nvif_object *object = &device->object; | |
74 | struct { | |
75 | struct nv_device_info_v1 m; | |
76 | struct { | |
77 | struct nv_device_info_v1_data engine; | |
78 | } v; | |
79 | } a = { | |
80 | .m.version = 1, | |
81 | .m.count = sizeof(a.v) / sizeof(a.v.engine), | |
82 | .v.engine.mthd = engine, | |
83 | }; | |
84 | u64 runm = 0; | |
85 | int ret, i; | |
86 | ||
87 | if ((ret = nvif_fifo_runlists(device))) | |
88 | return runm; | |
89 | ||
90 | ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, &a, sizeof(a)); | |
91 | if (ret == 0) { | |
92 | for (i = 0; i < device->runlists; i++) { | |
93 | if (device->runlist[i].engines & a.v.engine.data) | |
94 | runm |= BIT_ULL(i); | |
95 | } | |
96 | } | |
97 | ||
98 | return runm; | |
99 | } |