LXR linux/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
  27struct chp_link {
  28        struct chp_id chpid;
  29        u32 fla_mask;
  30        u16 fla;
  31};
  32
  33static 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
  42struct 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
  53int chp_get_status(struct chp_id chpid);
  54u8 chp_get_sch_opm(struct subchannel *sch);
  55int chp_is_registered(struct chp_id chpid);
  56void *chp_get_chp_desc(struct chp_id chpid);
  57void chp_remove_cmg_attr(struct channel_path *chp);
  58int chp_add_cmg_attr(struct channel_path *chp);
  59int chp_new(struct chp_id chpid);
  60void chp_cfg_schedule(struct chp_id chpid, int configure);
  61void chp_cfg_cancel_deconfigure(struct chp_id chpid);
  62int chp_info_get_status(struct chp_id chpid);
  63int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
  64#endif /* S390_CHP_H */
  65