projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| e6b6e10a | 1 | /* |
| a53c8fab | 2 | * Copyright IBM Corp. 2007, 2010 |
| e6b6e10a PO |
3 | * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> |
| 4 | */ | |
| 5 | ||
| 6 | #ifndef S390_CHP_H | |
| 7 | #define S390_CHP_H S390_CHP_H | |
| 8 | ||
| 9 | #include <linux/types.h> | |
| 10 | #include <linux/device.h> | |
| b730f3a9 | 11 | #include <linux/mutex.h> |
| e5854a58 | 12 | #include <asm/chpid.h> |
| e6b6e10a | 13 | #include "chsc.h" |
| 0ae7a7b2 | 14 | #include "css.h" |
| e6b6e10a | 15 | |
| e5854a58 PO |
16 | #define CHP_STATUS_STANDBY 0 |
| 17 | #define CHP_STATUS_CONFIGURED 1 | |
| 18 | #define CHP_STATUS_RESERVED 2 | |
| 19 | #define CHP_STATUS_NOT_RECOGNIZED 3 | |
| 20 | ||
| c820de39 CH |
21 | #define CHP_ONLINE 0 |
| 22 | #define CHP_OFFLINE 1 | |
| 23 | #define CHP_VARY_ON 2 | |
| 24 | #define CHP_VARY_OFF 3 | |
| 25 | ||
| 99611f87 | 26 | struct chp_link { |
| c820de39 CH |
27 | struct chp_id chpid; |
| 28 | u32 fla_mask; | |
| 29 | u16 fla; | |
| 30 | }; | |
| 31 | ||
| e5854a58 PO |
32 | static inline int chp_test_bit(u8 *bitmap, int num) |
| 33 | { | |
| 34 | int byte = num >> 3; | |
| 35 | int mask = 128 >> (num & 7); | |
| 36 | ||
| 37 | return (bitmap[byte] & mask) ? 1 : 0; | |
| 38 | } | |
| 39 | ||
| 40 | ||
| e6b6e10a | 41 | struct channel_path { |
| b730f3a9 | 42 | struct device dev; |
| e6b6e10a | 43 | struct chp_id chpid; |
| b730f3a9 | 44 | struct mutex lock; /* Serialize access to below members. */ |
| e6b6e10a PO |
45 | int state; |
| 46 | struct channel_path_desc desc; | |
| cce0eacc | 47 | struct channel_path_desc_fmt1 desc_fmt1; |
| e6b6e10a PO |
48 | /* Channel-measurement related stuff: */ |
| 49 | int cmg; | |
| 50 | int shared; | |
| 0d9bfe91 | 51 | struct cmg_chars cmg_chars; |
| e6b6e10a PO |
52 | }; |
| 53 | ||
| c38a90a3 SO |
54 | /* Return channel_path struct for given chpid. */ |
| 55 | static inline struct channel_path *chpid_to_chp(struct chp_id chpid) | |
| 56 | { | |
| 57 | return channel_subsystems[chpid.cssid]->chps[chpid.id]; | |
| 58 | } | |
| 59 | ||
| e6b6e10a PO |
60 | int chp_get_status(struct chp_id chpid); |
| 61 | u8 chp_get_sch_opm(struct subchannel *sch); | |
| 62 | int chp_is_registered(struct chp_id chpid); | |
| 2bf29df7 | 63 | struct channel_path_desc *chp_get_chp_desc(struct chp_id chpid); |
| e6b6e10a PO |
64 | void chp_remove_cmg_attr(struct channel_path *chp); |
| 65 | int chp_add_cmg_attr(struct channel_path *chp); | |
| cce0eacc | 66 | int chp_update_desc(struct channel_path *chp); |
| e6b6e10a | 67 | int chp_new(struct chp_id chpid); |
| e5854a58 PO |
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); | |
| 99611f87 | 71 | int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *); |
| e6b6e10a | 72 | #endif /* S390_CHP_H */ |