tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2014 IBM Corp.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9
10#ifndef _MISC_CXL_BASE_H
11#define _MISC_CXL_BASE_H
12
13#ifdef CONFIG_CXL_BASE
14
15#define CXL_IRQ_RANGES 4
16
17struct cxl_irq_ranges {
18 irq_hw_number_t offset[CXL_IRQ_RANGES];
19 irq_hw_number_t range[CXL_IRQ_RANGES];
20};
21
22extern atomic_t cxl_use_count;
23
24static inline bool cxl_ctx_in_use(void)
25{
26 return (atomic_read(&cxl_use_count) != 0);
27}
28
29static inline void cxl_ctx_get(void)
30{
31 atomic_inc(&cxl_use_count);
32}
33
34static inline void cxl_ctx_put(void)
35{
36 atomic_dec(&cxl_use_count);
37}
38
39struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
40void cxl_afu_put(struct cxl_afu *afu);
41void cxl_slbia(struct mm_struct *mm);
42
43#else /* CONFIG_CXL_BASE */
44
45static inline bool cxl_ctx_in_use(void) { return false; }
46static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
47static inline void cxl_afu_put(struct cxl_afu *afu) {}
48static inline void cxl_slbia(struct mm_struct *mm) {}
49
50#endif /* CONFIG_CXL_BASE */
51
52#endif