18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * drivers/hyperhold/hyperhold.h 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (c) 2020-2022 Huawei Technologies Co., Ltd. 68c2ecf20Sopenharmony_ci */ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#ifndef _HYPERHOLD_H_ 98c2ecf20Sopenharmony_ci#define _HYPERHOLD_H_ 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci#include <linux/kernel.h> 128c2ecf20Sopenharmony_ci 138c2ecf20Sopenharmony_cistruct hpio; 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_citypedef void (*hp_endio)(struct hpio *); 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_civoid hyperhold_disable(bool force); 188c2ecf20Sopenharmony_civoid hyperhold_enable(void); 198c2ecf20Sopenharmony_cibool is_hyperhold_enable(void); 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ciu32 hyperhold_nr_extent(void); 228c2ecf20Sopenharmony_ciu32 hyperhold_extent_size(u32 eid); 238c2ecf20Sopenharmony_cilong hyperhold_address(u32 eid, u32 offset); 248c2ecf20Sopenharmony_ciint hyperhold_addr_extent(u64 addr); 258c2ecf20Sopenharmony_ciint hyperhold_addr_offset(u64 addr); 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ciint hyperhold_alloc_extent(void); 288c2ecf20Sopenharmony_civoid hyperhold_free_extent(u32 eid); 298c2ecf20Sopenharmony_civoid hyperhold_should_free_extent(u32 eid); 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_cistruct hpio *hyperhold_io_alloc(u32 eid, gfp_t gfp, unsigned int op, bool new_page); 328c2ecf20Sopenharmony_civoid hyperhold_io_free(struct hpio *hpio); 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_cistruct hpio *hyperhold_io_get(u32 eid, gfp_t gfp, unsigned int op); 358c2ecf20Sopenharmony_cibool hyperhold_io_put(struct hpio *hpio); 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_civoid hyperhold_io_complete(struct hpio *hpio); 388c2ecf20Sopenharmony_civoid hyperhold_io_wait(struct hpio *hpio); 398c2ecf20Sopenharmony_ci 408c2ecf20Sopenharmony_cibool hyperhold_io_success(struct hpio *hpio); 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ciint hyperhold_io_extent(struct hpio *hpio); 438c2ecf20Sopenharmony_ciint hyperhold_io_operate(struct hpio *hpio); 448c2ecf20Sopenharmony_cistruct page *hyperhold_io_page(struct hpio *hpio, u32 index); 458c2ecf20Sopenharmony_cibool hyperhold_io_add_page(struct hpio *hpio, u32 index, struct page *page); 468c2ecf20Sopenharmony_ciu32 hyperhold_io_nr_page(struct hpio *hpio); 478c2ecf20Sopenharmony_civoid *hyperhold_io_private(struct hpio *hpio); 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ciint hyperhold_write_async(struct hpio *hpio, hp_endio endio, void *priv); 508c2ecf20Sopenharmony_ciint hyperhold_read_async(struct hpio *hpio, hp_endio endio, void *priv); 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_ci#endif 53