/* * Copyright IBM Corp. 2007, 2010 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> */ #ifndef S390_CHP_H #define S390_CHP_H S390_CHP_H #include <linux/types.h> #include <linux/device.h> #include <linux/mutex.h> #include <asm/chpid.h> #include "chsc.h" #include "css.h" #define CHP_STATUS_STANDBY 0 #define CHP_STATUS_CONFIGURED 1 #define CHP_STATUS_RESERVED 2 #define CHP_STATUS_NOT_RECOGNIZED 3 #define CHP_ONLINE 0 #define CHP_OFFLINE 1 #define CHP_VARY_ON 2 #define CHP_VARY_OFF 3 struct chp_link { struct chp_id chpid; u32 fla_mask; u16 fla; }; static inline int chp_test_bit(u8 *bitmap, int num) { int byte = num >> 3; int mask = 128 >> (num & 7); return (bitmap[byte] & mask) ? 1 : 0; } struct channel_path { struct device dev; struct chp_id chpid; struct mutex lock; /* Serialize access to below members. */ int state; struct channel_path_desc desc; struct channel_path_desc_fmt1 desc_fmt1; /* Channel-measurement related stuff: */ int cmg; int shared; void *cmg_chars; }; /* Return channel_path struct for given chpid. */ static inline struct channel_path *chpid_to_chp(struct chp_id chpid) { return channel_subsystems[chpid.cssid]->chps[chpid.id]; } int chp_get_status(struct chp_id chpid); u8 chp_get_sch_opm(struct subchannel *sch); int chp_is_registered(struct chp_id chpid); void *chp_get_chp_desc(struct chp_id chpid); void chp_remove_cmg_attr(struct channel_path *chp); int chp_add_cmg_attr(struct channel_path *chp); int chp_update_desc(struct channel_path *chp); int chp_new(struct chp_id chpid); void chp_cfg_schedule(struct chp_id chpid, int configure); void chp_cfg_cancel_deconfigure(struct chp_id chpid); int chp_info_get_status(struct chp_id chpid); int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *); #endif /* S390_CHP_H */