osal_device.h

浏览该文件的文档.

/*
 * Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2021-2022. All rights reserved.
 * Description: OS Abstract Layer.
 */
 
#ifndef __OSAL_DEVICE_H__
#define __OSAL_DEVICE_H__
 
#include "schedule/osal_wait.h"
 
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif
 
#define OSAL_POLLIN 0x0001U
#define OSAL_POLLPRI 0x0002U
#define OSAL_POLLOUT 0x0004U
#define OSAL_POLLERR 0x0008U
#define OSAL_POLLHUP 0x0010U
#define OSAL_POLLNVAL 0x0020U
#define OSAL_POLLRDNORM 0x0040U
#define OSAL_POLLRDBAND 0x0080U
#define OSAL_POLLWRNORM 0x0100U
 
typedef struct osal_poll_ {
    void *poll_table;
    void *data;
} osal_poll;
 
typedef struct osal_ioctl_cmd_ {
    unsigned int cmd;
    int (*handler)(unsigned int cmd, void *arg, void *private_data);
} osal_ioctl_cmd;
 
typedef struct osal_vm_ {
    void *vm;
} osal_vm;
 
typedef struct osal_fileops_ {
    int (*open)(void *private_data);
    int (*read)(char *buf, int size, long *offset, void *private_data);
    int (*write)(const char *buf, int size, long *offset, void *private_data);
    long (*llseek)(long offset, int whence, void *private_data);
    int (*release)(void *private_data);
    unsigned int (*poll)(osal_poll *osal_poll, void *private_data);
    int (*mmap)(osal_vm *vm, unsigned long start, unsigned long end, unsigned long vm_pgoff, void *private_data);
    int (*fasync)(int fd, void *filp, int mode);
    osal_ioctl_cmd *cmd_list;
    unsigned int cmd_cnt;
} osal_fileops;
 
typedef struct osal_pmops_ {
    int (*pm_suspend)(void *private_data);
    int (*pm_resume_early)(void *private_data);
    int (*pm_resume)(void *private_data);
    int (*pm_lowpower_enter)(void *private_data);
    int (*pm_lowpower_exit)(void *private_data);
    int (*pm_poweroff)(void *private_data);
    void *private_data;
} osal_pmops;
 
#define OSAL_DEV_NAME_LEN 32
typedef struct osal_dev_ {
    char name[OSAL_DEV_NAME_LEN];
    int minor;
    unsigned int parent_minor;
    osal_fileops *fops;
    osal_pmops *pmops;
    void *dev;
    void *owner;
} osal_dev;
 
#define OSAL_NOCACHE 0
#define OSAL_CACHE 1
 
typedef enum osal_kobject_action_ {
    OSAL_KOBJ_ADD,
    OSAL_KOBJ_REMOVE,
    OSAL_KOBJ_CHANGE,
    OSAL_KOBJ_MOVE,
    OSAL_KOBJ_ONLINE,
    OSAL_KOBJ_OFFLINE,
    OSAL_KOBJ_BIND,
    OSAL_KOBJ_UNBIND,
    OSAL_KOBJ_MAX
} osal_kobject_action;
 
void osal_pm_lowpower_enter(void);
 
void osal_pm_lowpower_exit(void);
 
osal_dev *osal_dev_create(const char *name);
 
int osal_dev_destroy(osal_dev *dev);
 
int osal_dev_register(osal_dev *dev);
 
void osal_dev_unregister(osal_dev *dev);
 
void osal_device_set_async(unsigned int minor);
 
void osal_poll_wait(osal_poll *table, osal_wait *wait);
 
void osal_notify_poll(osal_wait *wait);
 
int osal_remap_pfn_range(osal_vm *vm, unsigned long addr, unsigned long pfn, unsigned long size);
 
int osal_try_to_freeze(void);
 
int osal_set_freezable(void);
 
int osal_kobject_uevent_env(osal_dev *dev, osal_kobject_action action, char *envp[]);
 
int osal_fasync_helper(int fd, void *filp, int mode, void **fapp);
 
void osal_fasync_notify(void **fapp, int sig, int band);
 
void osal_pgprot_noncached(osal_vm *vm);
 
void osal_pgprot_cached(osal_vm *vm);
 
void osal_pgprot_writecombine(osal_vm *vm);
 
typedef struct {
    unsigned long a0;
    unsigned long a1;
    unsigned long a2;
    unsigned long a3;
    unsigned long a4;
    unsigned long a5;
    unsigned long a6;
    unsigned long a7;
} osal_smccc_info;
 
typedef struct {
    unsigned long a0;
    unsigned long a1;
    unsigned long a2;
    unsigned long a3;
} osal_smccc_res;
 
void osal_smccc_smc(const osal_smccc_info *info, osal_smccc_res *res);
 
int osal_opendev(const char *path, int flag, ...);
 
int osal_closedev(int fd);
 
int osal_readdev(int fd, void *buf, unsigned long count);
 
int osal_writedev(int fd, const void *buf, unsigned long count);
 
int osal_ioctldev(int fd, unsigned int cmd, ...);
 
// //////////////////////////// userspace interface //////////////////////////////
int osal_init(void);
 
void osal_exit(void);
 
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif
#endif /* __OSAL_DEVICE_H__ */