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 #include "css.h"
  16
  17 #define CHP_STATUS_STANDBY              0
  18 #define CHP_STATUS_CONFIGURED           1
  19 #define CHP_STATUS_RESERVED             2
  20 #define CHP_STATUS_NOT_RECOGNIZED       3
  21
  22 #define CHP_ONLINE 0
  23 #define CHP_OFFLINE 1
  24 #define CHP_VARY_ON 2
  25 #define CHP_VARY_OFF 3
  26
  27 struct chp_link {
  28         struct chp_id chpid;
  29         u32 fla_mask;
  30         u16 fla;
  31 };
  32
  33 static inline int chp_test_bit(u8 *bitmap, int num)
  34 {
  35         int byte = num >> 3;
  36         int mask = 128 >> (num & 7);
  37
  38         return (bitmap[byte] & mask) ? 1 : 0;
  39 }
  40
  41
  42 struct channel_path {
  43         struct chp_id chpid;
  44         int state;
  45         struct channel_path_desc desc;
  46         /* Channel-measurement related stuff: */
  47         int cmg;
  48         int shared;
  49         void *cmg_chars;
  50         struct device dev;
  51 };
  52
  53 int chp_get_status(struct chp_id chpid);
  54 u8 chp_get_sch_opm(struct subchannel *sch);
  55 int chp_is_registered(struct chp_id chpid);
  56 void *chp_get_chp_desc(struct chp_id chpid);
  57 void chp_remove_cmg_attr(struct channel_path *chp);
  58 int chp_add_cmg_attr(struct channel_path *chp);
  59 int chp_new(struct chp_id chpid);
  60 void chp_cfg_schedule(struct chp_id chpid, int configure);
  61 void chp_cfg_cancel_deconfigure(struct chp_id chpid);
  62 int chp_info_get_status(struct chp_id chpid);
  63 int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
  64 #endif /* S390_CHP_H */