1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Functions for incremental construction of fcx enabled I/O control blocks. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright IBM Corp. 2008 6*4882a593Smuzhiyun * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef _ASM_S390_ITCW_H 10*4882a593Smuzhiyun #define _ASM_S390_ITCW_H 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <linux/types.h> 13*4882a593Smuzhiyun #include <asm/fcx.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define ITCW_OP_READ 0 16*4882a593Smuzhiyun #define ITCW_OP_WRITE 1 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun struct itcw; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun struct tcw *itcw_get_tcw(struct itcw *itcw); 21*4882a593Smuzhiyun size_t itcw_calc_size(int intrg, int max_tidaws, int intrg_max_tidaws); 22*4882a593Smuzhiyun struct itcw *itcw_init(void *buffer, size_t size, int op, int intrg, 23*4882a593Smuzhiyun int max_tidaws, int intrg_max_tidaws); 24*4882a593Smuzhiyun struct dcw *itcw_add_dcw(struct itcw *itcw, u8 cmd, u8 flags, void *cd, 25*4882a593Smuzhiyun u8 cd_count, u32 count); 26*4882a593Smuzhiyun struct tidaw *itcw_add_tidaw(struct itcw *itcw, u8 flags, void *addr, 27*4882a593Smuzhiyun u32 count); 28*4882a593Smuzhiyun void itcw_set_data(struct itcw *itcw, void *addr, int use_tidal); 29*4882a593Smuzhiyun void itcw_finalize(struct itcw *itcw); 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun #endif /* _ASM_S390_ITCW_H */ 32