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e6946ea8fc
In upcoming patches we will want to generate some of the KLV keys
from other macros. Add MAKE_GUC_KLV_{KEY|LEN} macros for that and
make sure they will correctly expand provided TAG parameter. Also
fix PREP_GUC_KLV_TAG to also work correctly within other macros.
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240514190015.2172-2-michal.wajdeczko@intel.com
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2024 Intel Corporation
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*/
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#ifndef _XE_GUC_KLV_HELPERS_H_
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#define _XE_GUC_KLV_HELPERS_H_
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#include <linux/args.h>
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#include <linux/types.h>
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struct drm_printer;
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const char *xe_guc_klv_key_to_string(u16 key);
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void xe_guc_klv_print(const u32 *klvs, u32 num_dwords, struct drm_printer *p);
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int xe_guc_klv_count(const u32 *klvs, u32 num_dwords);
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/**
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* PREP_GUC_KLV - Prepare KLV header value based on provided key and len.
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* @key: KLV key
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* @len: KLV length
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*
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* Return: value of the KLV header (u32).
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*/
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#define PREP_GUC_KLV(key, len) \
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(FIELD_PREP(GUC_KLV_0_KEY, (key)) | \
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FIELD_PREP(GUC_KLV_0_LEN, (len)))
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/**
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* PREP_GUC_KLV_CONST - Prepare KLV header value based on const key and len.
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* @key: const KLV key
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* @len: const KLV length
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*
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* Return: value of the KLV header (u32).
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*/
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#define PREP_GUC_KLV_CONST(key, len) \
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(FIELD_PREP_CONST(GUC_KLV_0_KEY, (key)) | \
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FIELD_PREP_CONST(GUC_KLV_0_LEN, (len)))
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/**
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* MAKE_GUC_KLV_KEY - Prepare KLV KEY name based on unique KLV definition tag.
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* @TAG: unique tag of the KLV definition
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*/
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#define MAKE_GUC_KLV_KEY(TAG) CONCATENATE(CONCATENATE(GUC_KLV_, TAG), _KEY)
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/**
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* MAKE_GUC_KLV_LEN - Prepare KLV LEN name based on unique KLV definition tag.
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* @TAG: unique tag of the KLV definition
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*/
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#define MAKE_GUC_KLV_LEN(TAG) CONCATENATE(CONCATENATE(GUC_KLV_, TAG), _LEN)
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/**
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* PREP_GUC_KLV_TAG - Prepare KLV header value based on unique KLV definition tag.
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* @TAG: unique tag of the KLV definition
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*
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* Combine separate KEY and LEN definitions of the KLV identified by the TAG.
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*
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* Return: value of the KLV header (u32).
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*/
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#define PREP_GUC_KLV_TAG(TAG) \
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PREP_GUC_KLV_CONST(MAKE_GUC_KLV_KEY(TAG), MAKE_GUC_KLV_LEN(TAG))
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#endif
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