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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2024 Intel Corporation
4 */
5
6#ifndef _XE_GUC_BUF_H_
7#define _XE_GUC_BUF_H_
8
9#include <linux/cleanup.h>
10#include <linux/err.h>
11
12#include "xe_guc_buf_types.h"
13
14int xe_guc_buf_cache_init(struct xe_guc_buf_cache *cache);
15u32 xe_guc_buf_cache_dwords(struct xe_guc_buf_cache *cache);
16struct xe_guc_buf xe_guc_buf_reserve(struct xe_guc_buf_cache *cache, u32 dwords);
17struct xe_guc_buf xe_guc_buf_from_data(struct xe_guc_buf_cache *cache,
18 const void *data, size_t size);
19void xe_guc_buf_release(const struct xe_guc_buf buf);
20
21/**
22 * xe_guc_buf_is_valid() - Check if a buffer reference is valid.
23 * @buf: the &xe_guc_buf reference to check
24 *
25 * Return: true if @ref represents a valid sub-allication.
26 */
27static inline bool xe_guc_buf_is_valid(const struct xe_guc_buf buf)
28{
29 return !IS_ERR_OR_NULL(buf.sa);
30}
31
32void *xe_guc_buf_cpu_ptr(const struct xe_guc_buf buf);
33u64 xe_guc_buf_flush(const struct xe_guc_buf buf);
34u64 xe_guc_buf_gpu_addr(const struct xe_guc_buf buf);
35u64 xe_guc_cache_gpu_addr_from_ptr(struct xe_guc_buf_cache *cache, const void *ptr, u32 size);
36
37DEFINE_CLASS(xe_guc_buf, struct xe_guc_buf,
38 xe_guc_buf_release(_T),
39 xe_guc_buf_reserve(cache, num),
40 struct xe_guc_buf_cache *cache, u32 num);
41
42DEFINE_CLASS(xe_guc_buf_from_data, struct xe_guc_buf,
43 xe_guc_buf_release(_T),
44 xe_guc_buf_from_data(cache, data, size),
45 struct xe_guc_buf_cache *cache, const void *data, size_t size);
46
47#endif