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 *
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
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
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