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 #define nvkm_ucgrp(p) container_of((p), struct nvkm_ucgrp, object)
23 #include "priv.h"
24 #include "cgrp.h"
25 #include "runl.h"
26
27 #include <subdev/mmu.h>
28
29 #include <nvif/if0021.h>
30
31 struct nvkm_ucgrp {
32 struct nvkm_object object;
33 struct nvkm_cgrp *cgrp;
34 };
35
36 static int
nvkm_ucgrp_chan_new(const struct nvkm_oclass * oclass,void * argv,u32 argc,struct nvkm_object ** pobject)37 nvkm_ucgrp_chan_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
38 struct nvkm_object **pobject)
39 {
40 struct nvkm_cgrp *cgrp = nvkm_ucgrp(oclass->parent)->cgrp;
41
42 return nvkm_uchan_new(cgrp->runl->fifo, cgrp, oclass, argv, argc, pobject);
43 }
44
45 static int
nvkm_ucgrp_sclass(struct nvkm_object * object,int index,struct nvkm_oclass * oclass)46 nvkm_ucgrp_sclass(struct nvkm_object *object, int index, struct nvkm_oclass *oclass)
47 {
48 struct nvkm_cgrp *cgrp = nvkm_ucgrp(object)->cgrp;
49 struct nvkm_fifo *fifo = cgrp->runl->fifo;
50 const struct nvkm_fifo_func_chan *chan = &fifo->func->chan;
51 int c = 0;
52
53 /* *_CHANNEL_GPFIFO_* */
54 if (chan->user.oclass) {
55 if (c++ == index) {
56 oclass->base = chan->user;
57 oclass->ctor = nvkm_ucgrp_chan_new;
58 return 0;
59 }
60 }
61
62 return -EINVAL;
63 }
64
65 static void *
nvkm_ucgrp_dtor(struct nvkm_object * object)66 nvkm_ucgrp_dtor(struct nvkm_object *object)
67 {
68 struct nvkm_ucgrp *ucgrp = nvkm_ucgrp(object);
69
70 nvkm_cgrp_unref(&ucgrp->cgrp);
71 return ucgrp;
72 }
73
74 static const struct nvkm_object_func
75 nvkm_ucgrp = {
76 .dtor = nvkm_ucgrp_dtor,
77 .sclass = nvkm_ucgrp_sclass,
78 };
79
80 int
nvkm_ucgrp_new(struct nvkm_fifo * fifo,const struct nvkm_oclass * oclass,void * argv,u32 argc,struct nvkm_object ** pobject)81 nvkm_ucgrp_new(struct nvkm_fifo *fifo, const struct nvkm_oclass *oclass, void *argv, u32 argc,
82 struct nvkm_object **pobject)
83 {
84 union nvif_cgrp_args *args = argv;
85 struct nvkm_runl *runl;
86 struct nvkm_vmm *vmm;
87 struct nvkm_ucgrp *ucgrp;
88 int ret;
89
90 if (argc < sizeof(args->v0) || args->v0.version != 0)
91 return -ENOSYS;
92 argc -= sizeof(args->v0);
93
94 if (args->v0.namelen != argc)
95 return -EINVAL;
96
97 /* Lookup objects referenced in args. */
98 runl = nvkm_runl_get(fifo, args->v0.runlist, 0);
99 if (!runl)
100 return -EINVAL;
101
102 vmm = nvkm_uvmm_search(oclass->client, args->v0.vmm);
103 if (IS_ERR(vmm))
104 return PTR_ERR(vmm);
105
106 /* Allocate channel group. */
107 if (!(ucgrp = kzalloc(sizeof(*ucgrp), GFP_KERNEL))) {
108 ret = -ENOMEM;
109 goto done;
110 }
111
112 nvkm_object_ctor(&nvkm_ucgrp, oclass, &ucgrp->object);
113 *pobject = &ucgrp->object;
114
115 ret = nvkm_cgrp_new(runl, args->v0.name, vmm, true, &ucgrp->cgrp);
116 if (ret)
117 goto done;
118
119 /* Return channel group info to caller. */
120 args->v0.cgid = ucgrp->cgrp->id;
121
122 done:
123 nvkm_vmm_unref(&vmm);
124 return ret;
125 }
126