1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * Copyright 2014 IBM Corp.
 
 
 
 
 
 4 */
 5
 6#ifndef _MISC_CXL_BASE_H
 7#define _MISC_CXL_BASE_H
 8
 9#ifdef CONFIG_CXL_BASE
10
11#define CXL_IRQ_RANGES 4
12
13struct cxl_irq_ranges {
14	irq_hw_number_t offset[CXL_IRQ_RANGES];
15	irq_hw_number_t range[CXL_IRQ_RANGES];
16};
17
18extern atomic_t cxl_use_count;
19
20static inline bool cxl_ctx_in_use(void)
21{
22       return (atomic_read(&cxl_use_count) != 0);
23}
24
25static inline void cxl_ctx_get(void)
26{
27       atomic_inc(&cxl_use_count);
28}
29
30static inline void cxl_ctx_put(void)
31{
32       atomic_dec(&cxl_use_count);
33}
34
35struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
36void cxl_afu_put(struct cxl_afu *afu);
37void cxl_slbia(struct mm_struct *mm);
38
39#else /* CONFIG_CXL_BASE */
40
41static inline bool cxl_ctx_in_use(void) { return false; }
42static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
43static inline void cxl_afu_put(struct cxl_afu *afu) {}
44static inline void cxl_slbia(struct mm_struct *mm) {}
45
46#endif /* CONFIG_CXL_BASE */
47
48#endif

 
 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
 
 
39void cxl_slbia(struct mm_struct *mm);
40
41#else /* CONFIG_CXL_BASE */
42
43static inline bool cxl_ctx_in_use(void) { return false; }
 
 
44static inline void cxl_slbia(struct mm_struct *mm) {}
45
46#endif /* CONFIG_CXL_BASE */
47
48#endif