1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2024 Intel Corporation
4 */
5
6#ifndef _XE_GUC_KLV_HELPERS_H_
7#define _XE_GUC_KLV_HELPERS_H_
8
9#include <linux/args.h>
10#include <linux/types.h>
11
12struct drm_printer;
13
14const char *xe_guc_klv_key_to_string(u16 key);
15
16void xe_guc_klv_print(const u32 *klvs, u32 num_dwords, struct drm_printer *p);
17int xe_guc_klv_count(const u32 *klvs, u32 num_dwords);
18
19/**
20 * PREP_GUC_KLV - Prepare KLV header value based on provided key and len.
21 * @key: KLV key
22 * @len: KLV length
23 *
24 * Return: value of the KLV header (u32).
25 */
26#define PREP_GUC_KLV(key, len) \
27 (FIELD_PREP(GUC_KLV_0_KEY, (key)) | \
28 FIELD_PREP(GUC_KLV_0_LEN, (len)))
29
30/**
31 * PREP_GUC_KLV_CONST - Prepare KLV header value based on const key and len.
32 * @key: const KLV key
33 * @len: const KLV length
34 *
35 * Return: value of the KLV header (u32).
36 */
37#define PREP_GUC_KLV_CONST(key, len) \
38 (FIELD_PREP_CONST(GUC_KLV_0_KEY, (key)) | \
39 FIELD_PREP_CONST(GUC_KLV_0_LEN, (len)))
40
41/**
42 * MAKE_GUC_KLV_KEY - Prepare KLV KEY name based on unique KLV definition tag.
43 * @TAG: unique tag of the KLV definition
44 */
45#define MAKE_GUC_KLV_KEY(TAG) CONCATENATE(CONCATENATE(GUC_KLV_, TAG), _KEY)
46
47/**
48 * MAKE_GUC_KLV_LEN - Prepare KLV LEN name based on unique KLV definition tag.
49 * @TAG: unique tag of the KLV definition
50 */
51#define MAKE_GUC_KLV_LEN(TAG) CONCATENATE(CONCATENATE(GUC_KLV_, TAG), _LEN)
52
53/**
54 * PREP_GUC_KLV_TAG - Prepare KLV header value based on unique KLV definition tag.
55 * @TAG: unique tag of the KLV definition
56 *
57 * Combine separate KEY and LEN definitions of the KLV identified by the TAG.
58 *
59 * Return: value of the KLV header (u32).
60 */
61#define PREP_GUC_KLV_TAG(TAG) \
62 PREP_GUC_KLV_CONST(MAKE_GUC_KLV_KEY(TAG), MAKE_GUC_KLV_LEN(TAG))
63
64#endif
65

source code of linux/drivers/gpu/drm/xe/xe_guc_klv_helpers.h