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Linux/arch/s390/include/asm/itcw.h

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  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 

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