drivers/s390/cio/chp.h

   1 /*
   2  *  drivers/s390/cio/chp.h
   3  *
   4  *    Copyright IBM Corp. 2007
   5  *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
   6  */
   7
   8 #ifndef S390_CHP_H
   9 #define S390_CHP_H S390_CHP_H
  10
  11 #include <linux/types.h>
  12 #include <linux/device.h>
  13 #include <asm/chpid.h>
  14 #include "chsc.h"
  15
  16 #define CHP_STATUS_STANDBY              0
  17 #define CHP_STATUS_CONFIGURED           1
  18 #define CHP_STATUS_RESERVED             2
  19 #define CHP_STATUS_NOT_RECOGNIZED       3
  20
  21 static inline int chp_test_bit(u8 *bitmap, int num)
  22 {
  23         int byte = num >> 3;
  24         int mask = 128 >> (num & 7);
  25
  26         return (bitmap[byte] & mask) ? 1 : 0;
  27 }
  28
  29
  30 struct channel_path {
  31         struct chp_id chpid;
  32         int state;
  33         struct channel_path_desc desc;
  34         /* Channel-measurement related stuff: */
  35         int cmg;
  36         int shared;
  37         void *cmg_chars;
  38         struct device dev;
  39 };
  40
  41 int chp_get_status(struct chp_id chpid);
  42 u8 chp_get_sch_opm(struct subchannel *sch);
  43 int chp_is_registered(struct chp_id chpid);
  44 void *chp_get_chp_desc(struct chp_id chpid);
  45 void chp_process_crw(int id, int available);
  46 void chp_remove_cmg_attr(struct channel_path *chp);
  47 int chp_add_cmg_attr(struct channel_path *chp);
  48 int chp_new(struct chp_id chpid);
  49 void chp_cfg_schedule(struct chp_id chpid, int configure);
  50 void chp_cfg_cancel_deconfigure(struct chp_id chpid);
  51 int chp_info_get_status(struct chp_id chpid);
  52
  53 #endif /* S390_CHP_H */