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_HOST_RUNLISTS; |
45 | for (i = 0; i < ARRAY_SIZE(a->v.runlist); i++) { |
46 | a->v.runlist[i].mthd = NV_DEVICE_HOST_RUNLIST_ENGINES; |
47 | a->v.runlist[i].data = i; |
48 | } |
49 | |
50 | ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, a, sizeof(*a)); |
51 | if (ret) |
52 | goto done; |
53 | |
54 | device->runlists = fls64(a->v.runlists.data); |
55 | device->runlist = kcalloc(device->runlists, sizeof(*device->runlist), |
56 | GFP_KERNEL); |
57 | if (!device->runlist) { |
58 | ret = -ENOMEM; |
59 | goto done; |
60 | } |
61 | |
62 | for (i = 0; i < device->runlists; i++) { |
63 | if (a->v.runlist[i].mthd != NV_DEVICE_INFO_INVALID) |
64 | device->runlist[i].engines = a->v.runlist[i].data; |
65 | } |
66 | |
67 | done: |
68 | kfree(a); |
69 | return ret; |
70 | } |
71 | |
72 | u64 |
73 | nvif_fifo_runlist(struct nvif_device *device, u64 engine) |
74 | { |
75 | u64 runm = 0; |
76 | int ret, i; |
77 | |
78 | if ((ret = nvif_fifo_runlists(device))) |
79 | return runm; |
80 | |
81 | for (i = 0; i < device->runlists; i++) { |
82 | if (device->runlist[i].engines & engine) |
83 | runm |= BIT_ULL(i); |
84 | } |
85 | |
86 | return runm; |
87 | } |
88 | |