162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Hypervisor filesystem for Linux on s390. 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright IBM Corp. 2006 662306a36Sopenharmony_ci * Author(s): Michael Holzheu <holzheu@de.ibm.com> 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifndef _HYPFS_H_ 1062306a36Sopenharmony_ci#define _HYPFS_H_ 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include <linux/fs.h> 1362306a36Sopenharmony_ci#include <linux/types.h> 1462306a36Sopenharmony_ci#include <linux/debugfs.h> 1562306a36Sopenharmony_ci#include <linux/workqueue.h> 1662306a36Sopenharmony_ci#include <linux/kref.h> 1762306a36Sopenharmony_ci#include <asm/hypfs.h> 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci#define REG_FILE_MODE 0440 2062306a36Sopenharmony_ci#define UPDATE_FILE_MODE 0220 2162306a36Sopenharmony_ci#define DIR_MODE 0550 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ciextern struct dentry *hypfs_mkdir(struct dentry *parent, const char *name); 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ciextern struct dentry *hypfs_create_u64(struct dentry *dir, const char *name, 2662306a36Sopenharmony_ci __u64 value); 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ciextern struct dentry *hypfs_create_str(struct dentry *dir, const char *name, 2962306a36Sopenharmony_ci char *string); 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci/* LPAR Hypervisor */ 3262306a36Sopenharmony_ciextern int hypfs_diag_init(void); 3362306a36Sopenharmony_ciextern void hypfs_diag_exit(void); 3462306a36Sopenharmony_ciextern int hypfs_diag_create_files(struct dentry *root); 3562306a36Sopenharmony_ci 3662306a36Sopenharmony_ci/* VM Hypervisor */ 3762306a36Sopenharmony_ciextern int hypfs_vm_init(void); 3862306a36Sopenharmony_ciextern void hypfs_vm_exit(void); 3962306a36Sopenharmony_ciextern int hypfs_vm_create_files(struct dentry *root); 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ci/* VM diagnose 0c */ 4262306a36Sopenharmony_ciint hypfs_diag0c_init(void); 4362306a36Sopenharmony_civoid hypfs_diag0c_exit(void); 4462306a36Sopenharmony_ci 4562306a36Sopenharmony_ci/* Set Partition-Resource Parameter */ 4662306a36Sopenharmony_civoid hypfs_sprp_init(void); 4762306a36Sopenharmony_civoid hypfs_sprp_exit(void); 4862306a36Sopenharmony_ci 4962306a36Sopenharmony_ciint __hypfs_fs_init(void); 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_cistatic inline int hypfs_fs_init(void) 5262306a36Sopenharmony_ci{ 5362306a36Sopenharmony_ci if (IS_ENABLED(CONFIG_S390_HYPFS_FS)) 5462306a36Sopenharmony_ci return __hypfs_fs_init(); 5562306a36Sopenharmony_ci return 0; 5662306a36Sopenharmony_ci} 5762306a36Sopenharmony_ci 5862306a36Sopenharmony_ci/* debugfs interface */ 5962306a36Sopenharmony_cistruct hypfs_dbfs_file; 6062306a36Sopenharmony_ci 6162306a36Sopenharmony_cistruct hypfs_dbfs_data { 6262306a36Sopenharmony_ci void *buf; 6362306a36Sopenharmony_ci void *buf_free_ptr; 6462306a36Sopenharmony_ci size_t size; 6562306a36Sopenharmony_ci struct hypfs_dbfs_file *dbfs_file; 6662306a36Sopenharmony_ci}; 6762306a36Sopenharmony_ci 6862306a36Sopenharmony_cistruct hypfs_dbfs_file { 6962306a36Sopenharmony_ci const char *name; 7062306a36Sopenharmony_ci int (*data_create)(void **data, void **data_free_ptr, 7162306a36Sopenharmony_ci size_t *size); 7262306a36Sopenharmony_ci void (*data_free)(const void *buf_free_ptr); 7362306a36Sopenharmony_ci long (*unlocked_ioctl) (struct file *, unsigned int, 7462306a36Sopenharmony_ci unsigned long); 7562306a36Sopenharmony_ci 7662306a36Sopenharmony_ci /* Private data for hypfs_dbfs.c */ 7762306a36Sopenharmony_ci struct mutex lock; 7862306a36Sopenharmony_ci struct dentry *dentry; 7962306a36Sopenharmony_ci}; 8062306a36Sopenharmony_ci 8162306a36Sopenharmony_ciextern void hypfs_dbfs_exit(void); 8262306a36Sopenharmony_ciextern void hypfs_dbfs_create_file(struct hypfs_dbfs_file *df); 8362306a36Sopenharmony_ciextern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df); 8462306a36Sopenharmony_ci 8562306a36Sopenharmony_ci#endif /* _HYPFS_H_ */ 86