drivers/s390/char/hmcdrv_cache.h

   1 /*
   2  *    SE/HMC Drive (Read) Cache Functions
   3  *
   4  *    Copyright IBM Corp. 2013
   5  *    Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
   6  */
   7
   8 #ifndef __HMCDRV_CACHE_H__
   9 #define __HMCDRV_CACHE_H__
  10
  11 #include <linux/mmzone.h>
  12 #include "hmcdrv_ftp.h"
  13
  14 #define HMCDRV_CACHE_SIZE_DFLT  (MAX_ORDER_NR_PAGES * PAGE_SIZE / 2UL)
  15
  16 typedef ssize_t (*hmcdrv_cache_ftpfunc)(const struct hmcdrv_ftp_cmdspec *ftp,
  17                                         size_t *fsize);
  18
  19 ssize_t hmcdrv_cache_cmd(const struct hmcdrv_ftp_cmdspec *ftp,
  20                          hmcdrv_cache_ftpfunc func);
  21 int hmcdrv_cache_startup(size_t cachesize);
  22 void hmcdrv_cache_shutdown(void);
  23
  24 #endif   /* __HMCDRV_CACHE_H__ */