arch/s390/include/asm/itcw.h

   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 */