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#include "priv.h"
23
24void
25ga100_flcn_intr_retrigger(struct nvkm_falcon *falcon)
26{
27	nvkm_falcon_wr32(falcon, 0x3e8, 0x00000001);
28}
29
30int
31ga100_flcn_fw_signature(struct nvkm_falcon_fw *fw, u32 *src_base_src)
32{
33	struct nvkm_falcon *falcon = fw->falcon;
34	struct nvkm_device *device = falcon->owner->device;
35	u32 reg_fuse_version;
36	int idx;
37
38	FLCN_DBG(falcon, "brom: %08x %08x", fw->engine_id, fw->ucode_id);
39	FLCN_DBG(falcon, "fuse_version: %d", fw->fuse_ver);
40
41	if (fw->engine_id & 0x00000001) {
42		reg_fuse_version = nvkm_rd32(device, 0x824140 + (fw->ucode_id - 1) * 4);
43	} else
44	if (fw->engine_id & 0x00000004) {
45		reg_fuse_version = nvkm_rd32(device, 0x824100 + (fw->ucode_id - 1) * 4);
46	} else
47	if (fw->engine_id & 0x00000400) {
48		reg_fuse_version = nvkm_rd32(device, 0x8241c0 + (fw->ucode_id - 1) * 4);
49	} else {
50		WARN_ON(1);
51		return -ENOSYS;
52	}
53
54	FLCN_DBG(falcon, "reg_fuse_version: %08x", reg_fuse_version);
55	if (reg_fuse_version) {
56		reg_fuse_version = fls(reg_fuse_version);
57		FLCN_DBG(falcon, "reg_fuse_version: %d", reg_fuse_version);
58
59		if (WARN_ON(fw->fuse_ver < reg_fuse_version))
60			return -EINVAL;
61
62		idx = fw->fuse_ver - reg_fuse_version;
63	} else {
64		idx = fw->sig_nr - 1;
65	}
66
67	return idx;
68}
69