1 /* $NetBSD: nouveau_nvkm_engine_sec2_base.c,v 1.2 2021/12/18 23:45:37 riastradh Exp $ */
2
3 /*
4 * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24 #include <sys/cdefs.h>
25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_sec2_base.c,v 1.2 2021/12/18 23:45:37 riastradh Exp $");
26
27 #include "priv.h"
28
29 #include <core/firmware.h>
30 #include <subdev/top.h>
31
32 static void
nvkm_sec2_recv(struct work_struct * work)33 nvkm_sec2_recv(struct work_struct *work)
34 {
35 struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work);
36
37 if (!sec2->initmsg_received) {
38 int ret = sec2->func->initmsg(sec2);
39 if (ret) {
40 nvkm_error(&sec2->engine.subdev,
41 "error parsing init message: %d\n", ret);
42 return;
43 }
44
45 sec2->initmsg_received = true;
46 }
47
48 nvkm_falcon_msgq_recv(sec2->msgq);
49 }
50
51 static void
nvkm_sec2_intr(struct nvkm_engine * engine)52 nvkm_sec2_intr(struct nvkm_engine *engine)
53 {
54 struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
55 sec2->func->intr(sec2);
56 }
57
58 static int
nvkm_sec2_fini(struct nvkm_engine * engine,bool suspend)59 nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend)
60 {
61 struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
62
63 flush_work(&sec2->work);
64
65 if (suspend) {
66 nvkm_falcon_cmdq_fini(sec2->cmdq);
67 sec2->initmsg_received = false;
68 }
69
70 return 0;
71 }
72
73 static void *
nvkm_sec2_dtor(struct nvkm_engine * engine)74 nvkm_sec2_dtor(struct nvkm_engine *engine)
75 {
76 struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
77 nvkm_falcon_msgq_del(&sec2->msgq);
78 nvkm_falcon_cmdq_del(&sec2->cmdq);
79 nvkm_falcon_qmgr_del(&sec2->qmgr);
80 nvkm_falcon_dtor(&sec2->falcon);
81 return sec2;
82 }
83
84 static const struct nvkm_engine_func
85 nvkm_sec2 = {
86 .dtor = nvkm_sec2_dtor,
87 .fini = nvkm_sec2_fini,
88 .intr = nvkm_sec2_intr,
89 };
90
91 int
nvkm_sec2_new_(const struct nvkm_sec2_fwif * fwif,struct nvkm_device * device,int index,u32 addr,struct nvkm_sec2 ** psec2)92 nvkm_sec2_new_(const struct nvkm_sec2_fwif *fwif, struct nvkm_device *device,
93 int index, u32 addr, struct nvkm_sec2 **psec2)
94 {
95 struct nvkm_sec2 *sec2;
96 int ret;
97
98 if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL)))
99 return -ENOMEM;
100
101 ret = nvkm_engine_ctor(&nvkm_sec2, device, index, true, &sec2->engine);
102 if (ret)
103 return ret;
104
105 fwif = nvkm_firmware_load(&sec2->engine.subdev, fwif, "Sec2", sec2);
106 if (IS_ERR(fwif))
107 return PTR_ERR(fwif);
108
109 sec2->func = fwif->func;
110
111 ret = nvkm_falcon_ctor(sec2->func->flcn, &sec2->engine.subdev,
112 nvkm_subdev_name[index], addr, &sec2->falcon);
113 if (ret)
114 return ret;
115
116 if ((ret = nvkm_falcon_qmgr_new(&sec2->falcon, &sec2->qmgr)) ||
117 (ret = nvkm_falcon_cmdq_new(sec2->qmgr, "cmdq", &sec2->cmdq)) ||
118 (ret = nvkm_falcon_msgq_new(sec2->qmgr, "msgq", &sec2->msgq)))
119 return ret;
120
121 INIT_WORK(&sec2->work, nvkm_sec2_recv);
122 return 0;
123 };
124