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