summaryrefslogblamecommitdiff
path: root/include/misc/cxl-base.h
blob: 2251da7f32d95420aa1d3d90748641c8d7671af9 (plain) (tree) 
2874c5fd2842 ^

1cd258d7facc ^


1cd258d7facc ^


ec249dd860ed ^


1cd258d7facc ^



























62ccf2d2efef ^


1cd258d7facc ^





62ccf2d2efef ^


1cd258d7facc ^





1

2
3

4
5

6
7

8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

35
36

37
38
39
40
41

42
43

44
45
46
47
48

                                               

                           

   

                        


























                                                 

                                                 




                                                         

                                                                               




                                                     
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright 2014 IBM Corp.
 */

#ifndef _MISC_CXL_BASE_H
#define _MISC_CXL_BASE_H

#ifdef CONFIG_CXL_BASE

#define CXL_IRQ_RANGES 4

struct cxl_irq_ranges {
	irq_hw_number_t offset[CXL_IRQ_RANGES];
	irq_hw_number_t range[CXL_IRQ_RANGES];
};

extern atomic_t cxl_use_count;

static inline bool cxl_ctx_in_use(void)
{
       return (atomic_read(&cxl_use_count) != 0);
}

static inline void cxl_ctx_get(void)
{
       atomic_inc(&cxl_use_count);
}

static inline void cxl_ctx_put(void)
{
       atomic_dec(&cxl_use_count);
}

struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
void cxl_afu_put(struct cxl_afu *afu);
void cxl_slbia(struct mm_struct *mm);

#else /* CONFIG_CXL_BASE */

static inline bool cxl_ctx_in_use(void) { return false; }
static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
static inline void cxl_afu_put(struct cxl_afu *afu) {}
static inline void cxl_slbia(struct mm_struct *mm) {}

#endif /* CONFIG_CXL_BASE */

#endif