1 /* 2 * drivers/s390/cio/chp.h 3 * 4 * Copyright IBM Corp. 2007,2010 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 <linux/mutex.h> 14 #include <asm/chpid.h> 15 #include "chsc.h" 16 #include "css.h" 17 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 22 23 #define CHP_ONLINE 0 24 #define CHP_OFFLINE 1 25 #define CHP_VARY_ON 2 26 #define CHP_VARY_OFF 3 27 28 struct chp_link { 29 struct chp_id chpid; 30 u32 fla_mask; 31 u16 fla; 32 }; 33 chp_test_bit(u8 * bitmap,int num)34static inline int chp_test_bit(u8 *bitmap, int num) 35 { 36 int byte = num >> 3; 37 int mask = 128 >> (num & 7); 38 39 return (bitmap[byte] & mask) ? 1 : 0; 40 } 41 42 43 struct channel_path { 44 struct device dev; 45 struct chp_id chpid; 46 struct mutex lock; /* Serialize access to below members. */ 47 int state; 48 struct channel_path_desc desc; 49 /* Channel-measurement related stuff: */ 50 int cmg; 51 int shared; 52 void *cmg_chars; 53 }; 54 55 /* Return channel_path struct for given chpid. */ chpid_to_chp(struct chp_id chpid)56static inline struct channel_path *chpid_to_chp(struct chp_id chpid) 57 { 58 return channel_subsystems[chpid.cssid]->chps[chpid.id]; 59 } 60 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 */ 73