18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Functions for incremental construction of fcx enabled I/O control blocks. 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright IBM Corp. 2008 68c2ecf20Sopenharmony_ci * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> 78c2ecf20Sopenharmony_ci */ 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci#ifndef _ASM_S390_ITCW_H 108c2ecf20Sopenharmony_ci#define _ASM_S390_ITCW_H 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci#include <linux/types.h> 138c2ecf20Sopenharmony_ci#include <asm/fcx.h> 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci#define ITCW_OP_READ 0 168c2ecf20Sopenharmony_ci#define ITCW_OP_WRITE 1 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_cistruct itcw; 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_cistruct tcw *itcw_get_tcw(struct itcw *itcw); 218c2ecf20Sopenharmony_cisize_t itcw_calc_size(int intrg, int max_tidaws, int intrg_max_tidaws); 228c2ecf20Sopenharmony_cistruct itcw *itcw_init(void *buffer, size_t size, int op, int intrg, 238c2ecf20Sopenharmony_ci int max_tidaws, int intrg_max_tidaws); 248c2ecf20Sopenharmony_cistruct dcw *itcw_add_dcw(struct itcw *itcw, u8 cmd, u8 flags, void *cd, 258c2ecf20Sopenharmony_ci u8 cd_count, u32 count); 268c2ecf20Sopenharmony_cistruct tidaw *itcw_add_tidaw(struct itcw *itcw, u8 flags, void *addr, 278c2ecf20Sopenharmony_ci u32 count); 288c2ecf20Sopenharmony_civoid itcw_set_data(struct itcw *itcw, void *addr, int use_tidal); 298c2ecf20Sopenharmony_civoid itcw_finalize(struct itcw *itcw); 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci#endif /* _ASM_S390_ITCW_H */ 32