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