2 * drivers/s390/cio/chp.h
4 * Copyright IBM Corp. 2007,2010
5 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
9 #define S390_CHP_H S390_CHP_H
11 #include <linux/types.h>
12 #include <linux/device.h>
13 #include <linux/mutex.h>
14 #include <asm/chpid.h>
18 #define CHP_STATUS_STANDBY 0
19 #define CHP_STATUS_CONFIGURED 1
20 #define CHP_STATUS_RESERVED 2
21 #define CHP_STATUS_NOT_RECOGNIZED 3
26 #define CHP_VARY_OFF 3
34 static inline int chp_test_bit(u8 *bitmap, int num)
37 int mask = 128 >> (num & 7);
39 return (bitmap[byte] & mask) ? 1 : 0;
46 struct mutex lock; /* Serialize access to below members. */
48 struct channel_path_desc desc;
49 /* Channel-measurement related stuff: */
55 /* Return channel_path struct for given chpid. */
56 static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
58 return channel_subsystems[chpid.cssid]->chps[chpid.id];
61 int chp_get_status(struct chp_id chpid);
62 u8 chp_get_sch_opm(struct subchannel *sch);
63 int chp_is_registered(struct chp_id chpid);
64 void *chp_get_chp_desc(struct chp_id chpid);
65 void chp_remove_cmg_attr(struct channel_path *chp);
66 int chp_add_cmg_attr(struct channel_path *chp);
67 int chp_new(struct chp_id chpid);
68 void chp_cfg_schedule(struct chp_id chpid, int configure);
69 void chp_cfg_cancel_deconfigure(struct chp_id chpid);
70 int chp_info_get_status(struct chp_id chpid);
71 int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
72 #endif /* S390_CHP_H */