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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Functions for incremental construction of fcx enabled I/O control blocks.
- *
- * Copyright IBM Corp. 2008
- * Author(s): Peter Oberparleiter <[email protected]>
- */
- #ifndef _ASM_S390_ITCW_H
- #define _ASM_S390_ITCW_H
- #include <linux/types.h>
- #include <asm/fcx.h>
- #define ITCW_OP_READ 0
- #define ITCW_OP_WRITE 1
- struct itcw;
- struct tcw *itcw_get_tcw(struct itcw *itcw);
- size_t itcw_calc_size(int intrg, int max_tidaws, int intrg_max_tidaws);
- struct itcw *itcw_init(void *buffer, size_t size, int op, int intrg,
- int max_tidaws, int intrg_max_tidaws);
- struct dcw *itcw_add_dcw(struct itcw *itcw, u8 cmd, u8 flags, void *cd,
- u8 cd_count, u32 count);
- struct tidaw *itcw_add_tidaw(struct itcw *itcw, u8 flags, void *addr,
- u32 count);
- void itcw_set_data(struct itcw *itcw, void *addr, int use_tidal);
- void itcw_finalize(struct itcw *itcw);
- #endif /* _ASM_S390_ITCW_H */
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