sys.h

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/*
 * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

 
#ifndef __METAL_SYS__H__
#error "Include metal/sys.h instead of metal/linux/sys.h"
#endif
 
#ifndef __METAL_LINUX_SYS__H__
#define __METAL_LINUX_SYS__H__
 
#include <fcntl.h>
#include <libgen.h>
#include <limits.h>
#include <metal/cpu.h>
#include <metal/errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <syslog.h>
#include <sys/file.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
 
#include <linux/futex.h>
#include <sysfs/libsysfs.h>
#ifdef HAVE_HUGETLBFS_H
#include <hugetlbfs.h>
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define METAL_INVALID_VADDR     NULL
#define MAX_PAGE_SIZES          32
 
#define metal_yield() metal_cpu_yield()
 
struct metal_device;

struct metal_page_size {
        size_t  page_size;

        unsigned long page_shift;

        char path[PATH_MAX];

        int mmap_flags;
};

struct metal_state {

        struct metal_common_state common;

        int                     data_fd;

        unsigned long           page_size;

        unsigned long           page_shift;

        const char              *tmp_path;

        struct metal_page_size  page_sizes[MAX_PAGE_SIZES];

        int                     num_page_sizes;

        int                     pagemap_fd;
};
 
#ifdef METAL_INTERNAL
int metal_linux_bus_init(void);
void metal_linux_bus_finish(void);
 
int metal_open(const char *path, int shm);
 
int metal_map(int fd, off_t offset, size_t size, int expand,
              int flags, void **result);
int metal_unmap(void *mem, size_t size);

int metal_linux_get_device_property(struct metal_device *device,
                                    const char *property_name,
                                    void *output, int len);
 
#define metal_for_each_page_size_up(ps)                                 \
        for ((ps) = &_metal.page_sizes[0];                              \
             (ps) <= &_metal.page_sizes[_metal.num_page_sizes - 1];     \
             (ps)++)
 
#define metal_for_each_page_size_down(ps)                               \
        for ((ps) = &_metal.page_sizes[_metal.num_page_sizes - 1];      \
             (ps) >= &_metal.page_sizes[0];                             \
             (ps)--)
 
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif /* __METAL_LINUX_SYS__H__ */