1 /*
2 * Copyright 2017 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 * Authors: Ben Skeggs <bskeggs@redhat.com>
23 */
24 #include "ior.h"
25
26 static const char *
27 nvkm_ior_name[] = {
28 [DAC] = "DAC",
29 [SOR] = "SOR",
30 [PIOR] = "PIOR",
31 };
32
33 struct nvkm_ior *
nvkm_ior_find(struct nvkm_disp * disp,enum nvkm_ior_type type,int id)34 nvkm_ior_find(struct nvkm_disp *disp, enum nvkm_ior_type type, int id)
35 {
36 struct nvkm_ior *ior;
37 list_for_each_entry(ior, &disp->iors, head) {
38 if (ior->type == type && (id < 0 || ior->id == id))
39 return ior;
40 }
41 return NULL;
42 }
43
44 void
nvkm_ior_del(struct nvkm_ior ** pior)45 nvkm_ior_del(struct nvkm_ior **pior)
46 {
47 struct nvkm_ior *ior = *pior;
48 if (ior) {
49 IOR_DBG(ior, "dtor");
50 list_del(&ior->head);
51 kfree(*pior);
52 *pior = NULL;
53 }
54 }
55
56 int
nvkm_ior_new_(const struct nvkm_ior_func * func,struct nvkm_disp * disp,enum nvkm_ior_type type,int id,bool hda)57 nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *disp,
58 enum nvkm_ior_type type, int id, bool hda)
59 {
60 struct nvkm_ior *ior;
61 if (!(ior = kzalloc(sizeof(*ior), GFP_KERNEL)))
62 return -ENOMEM;
63 ior->func = func;
64 ior->disp = disp;
65 ior->type = type;
66 ior->id = id;
67 ior->hda = hda;
68 snprintf(ior->name, sizeof(ior->name), "%s-%d", nvkm_ior_name[ior->type], ior->id);
69 list_add_tail(&ior->head, &disp->iors);
70 IOR_DBG(ior, "ctor");
71 return 0;
72 }
73