libmetal
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sys.h
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1/*
2 * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7/*
8 * @file linux/sys.h
9 * @brief Linux system primitives for libmetal.
10 */
11
12#ifndef __METAL_SYS__H__
13#error "Include metal/sys.h instead of metal/linux/sys.h"
14#endif
15
16#ifndef __METAL_LINUX_SYS__H__
17#define __METAL_LINUX_SYS__H__
18
19#include <fcntl.h>
20#include <libgen.h>
21#include <limits.h>
22#include <metal/cpu.h>
23#include <metal/errno.h>
24#include <pthread.h>
25#include <stdio.h>
26#include <stdlib.h>
27#include <stdarg.h>
28#include <syslog.h>
29#include <sys/file.h>
30#include <sys/mman.h>
31#include <sys/stat.h>
32#include <sys/syscall.h>
33#include <sys/types.h>
34#include <sys/wait.h>
35#include <unistd.h>
36
37#include <linux/futex.h>
38#include <sysfs/libsysfs.h>
39#ifdef HAVE_HUGETLBFS_H
40#include <hugetlbfs.h>
41#endif
42
43#ifdef __cplusplus
44extern "C" {
45#endif
46
47#define METAL_INVALID_VADDR NULL
48#define MAX_PAGE_SIZES 32
49
50#define metal_yield() metal_cpu_yield()
51
52struct metal_device;
53
57 size_t page_size;
58
60 unsigned long page_shift;
61
63 char path[PATH_MAX];
64
67};
68
70struct metal_state {
71
74
77
79 unsigned long page_size;
80
82 unsigned long page_shift;
83
85 const char *tmp_path;
86
89
92
95};
96
97#ifdef METAL_INTERNAL
98int metal_linux_bus_init(void);
99void metal_linux_bus_finish(void);
100
101int metal_open(const char *path, int shm);
102
103int metal_map(int fd, off_t offset, size_t size, int expand,
104 int flags, void **result);
105int metal_unmap(void *mem, size_t size);
106
117 const char *property_name,
118 void *output, int len);
119
120#define metal_for_each_page_size_up(ps) \
121 for ((ps) = &_metal.page_sizes[0]; \
122 (ps) <= &_metal.page_sizes[_metal.num_page_sizes - 1]; \
123 (ps)++)
124
125#define metal_for_each_page_size_down(ps) \
126 for ((ps) = &_metal.page_sizes[_metal.num_page_sizes - 1]; \
127 (ps) >= &_metal.page_sizes[0]; \
128 (ps)--)
129
130#endif
131
132#ifdef __cplusplus
133}
134#endif
135
136#endif /* __METAL_LINUX_SYS__H__ */
Definition sys.h:63
Definition device.h:72
Definition sys.h:55
size_t page_size
Definition sys.h:57
unsigned long page_shift
Definition sys.h:60
int mmap_flags
Definition sys.h:66
char path[PATH_MAX]
Definition sys.h:63
Definition sys.h:40
int num_page_sizes
Definition sys.h:91
int pagemap_fd
Definition sys.h:94
const char * tmp_path
Definition sys.h:85
unsigned long page_size
Definition sys.h:79
struct metal_page_size page_sizes[MAX_PAGE_SIZES]
Definition sys.h:88
struct metal_common_state common
Definition sys.h:43
unsigned long page_shift
Definition sys.h:82
int data_fd
Definition sys.h:76
int metal_linux_bus_init(void)
Definition device.c:623
int metal_linux_get_device_property(struct metal_device *device, const char *property_name, void *output, int len)
Definition device.c:651
void metal_linux_bus_finish(void)
Definition device.c:634
#define MAX_PAGE_SIZES
Definition sys.h:48
int metal_map(int fd, off_t offset, size_t size, int expand, int flags, void **result)
Map a segment of a file/device.
Definition utilities.c:55
int metal_open(const char *path, int shm)
Open (or create) a file.
Definition utilities.c:25
int metal_unmap(void *mem, size_t size)
Unmap a segment of the process address space.
Definition utilities.c:97