projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef S390_DEVICE_H |
| 2 | #define S390_DEVICE_H | |
| 3 | ||
| 40154b82 PO |
4 | #include <asm/ccwdev.h> |
| 5 | #include <asm/atomic.h> | |
| 6 | #include <linux/wait.h> | |
| 7 | ||
| 1da177e4 LT |
8 | /* |
| 9 | * states of the device statemachine | |
| 10 | */ | |
| 11 | enum dev_state { | |
| 12 | DEV_STATE_NOT_OPER, | |
| 13 | DEV_STATE_SENSE_PGID, | |
| 14 | DEV_STATE_SENSE_ID, | |
| 15 | DEV_STATE_OFFLINE, | |
| 16 | DEV_STATE_VERIFY, | |
| 17 | DEV_STATE_ONLINE, | |
| 18 | DEV_STATE_W4SENSE, | |
| 19 | DEV_STATE_DISBAND_PGID, | |
| 20 | DEV_STATE_BOXED, | |
| 21 | /* states to wait for i/o completion before doing something */ | |
| 22 | DEV_STATE_CLEAR_VERIFY, | |
| 23 | DEV_STATE_TIMEOUT_KILL, | |
| 1da177e4 LT |
24 | DEV_STATE_QUIESCE, |
| 25 | /* special states for devices gone not operational */ | |
| 26 | DEV_STATE_DISCONNECTED, | |
| 27 | DEV_STATE_DISCONNECTED_SENSE_ID, | |
| 28 | DEV_STATE_CMFCHANGE, | |
| 94bb0633 | 29 | DEV_STATE_CMFUPDATE, |
| 1da177e4 LT |
30 | /* last element! */ |
| 31 | NR_DEV_STATES | |
| 32 | }; | |
| 33 | ||
| 34 | /* | |
| 35 | * asynchronous events of the device statemachine | |
| 36 | */ | |
| 37 | enum dev_event { | |
| 38 | DEV_EVENT_NOTOPER, | |
| 39 | DEV_EVENT_INTERRUPT, | |
| 40 | DEV_EVENT_TIMEOUT, | |
| 41 | DEV_EVENT_VERIFY, | |
| 42 | /* last element! */ | |
| 43 | NR_DEV_EVENTS | |
| 44 | }; | |
| 45 | ||
| 46 | struct ccw_device; | |
| 47 | ||
| 48 | /* | |
| 49 | * action called through jumptable | |
| 50 | */ | |
| 51 | typedef void (fsm_func_t)(struct ccw_device *, enum dev_event); | |
| 52 | extern fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS]; | |
| 53 | ||
| 54 | static inline void | |
| 55 | dev_fsm_event(struct ccw_device *cdev, enum dev_event dev_event) | |
| 56 | { | |
| 57 | dev_jumptable[cdev->private->state][dev_event](cdev, dev_event); | |
| 58 | } | |
| 59 | ||
| 60 | /* | |
| 61 | * Delivers 1 if the device state is final. | |
| 62 | */ | |
| 63 | static inline int | |
| 64 | dev_fsm_final_state(struct ccw_device *cdev) | |
| 65 | { | |
| 66 | return (cdev->private->state == DEV_STATE_NOT_OPER || | |
| 67 | cdev->private->state == DEV_STATE_OFFLINE || | |
| 68 | cdev->private->state == DEV_STATE_ONLINE || | |
| 69 | cdev->private->state == DEV_STATE_BOXED); | |
| 70 | } | |
| 71 | ||
| 72 | extern struct workqueue_struct *ccw_device_work; | |
| 73 | extern struct workqueue_struct *ccw_device_notify_work; | |
| 40154b82 PO |
74 | extern wait_queue_head_t ccw_device_init_wq; |
| 75 | extern atomic_t ccw_device_init_count; | |
| 1da177e4 LT |
76 | |
| 77 | void io_subchannel_recog_done(struct ccw_device *cdev); | |
| 78 | ||
| 79 | int ccw_device_cancel_halt_clear(struct ccw_device *); | |
| 80 | ||
| c1637532 | 81 | void ccw_device_do_unreg_rereg(struct work_struct *); |
| d7b5a4c9 CH |
82 | void ccw_device_move_to_orphanage(struct work_struct *); |
| 83 | int ccw_device_is_orphan(struct ccw_device *); | |
| 1da177e4 LT |
84 | |
| 85 | int ccw_device_recognition(struct ccw_device *); | |
| 86 | int ccw_device_online(struct ccw_device *); | |
| 87 | int ccw_device_offline(struct ccw_device *); | |
| 88 | ||
| 89 | /* Function prototypes for device status and basic sense stuff. */ | |
| 90 | void ccw_device_accumulate_irb(struct ccw_device *, struct irb *); | |
| 91 | void ccw_device_accumulate_basic_sense(struct ccw_device *, struct irb *); | |
| 92 | int ccw_device_accumulate_and_sense(struct ccw_device *, struct irb *); | |
| 93 | int ccw_device_do_sense(struct ccw_device *, struct irb *); | |
| 94 | ||
| 95 | /* Function prototypes for sense id stuff. */ | |
| 96 | void ccw_device_sense_id_start(struct ccw_device *); | |
| 97 | void ccw_device_sense_id_irq(struct ccw_device *, enum dev_event); | |
| 98 | void ccw_device_sense_id_done(struct ccw_device *, int); | |
| 99 | ||
| 100 | /* Function prototypes for path grouping stuff. */ | |
| 101 | void ccw_device_sense_pgid_start(struct ccw_device *); | |
| 102 | void ccw_device_sense_pgid_irq(struct ccw_device *, enum dev_event); | |
| 103 | void ccw_device_sense_pgid_done(struct ccw_device *, int); | |
| 104 | ||
| 105 | void ccw_device_verify_start(struct ccw_device *); | |
| 106 | void ccw_device_verify_irq(struct ccw_device *, enum dev_event); | |
| 107 | void ccw_device_verify_done(struct ccw_device *, int); | |
| 108 | ||
| 109 | void ccw_device_disband_start(struct ccw_device *); | |
| 110 | void ccw_device_disband_irq(struct ccw_device *, enum dev_event); | |
| 111 | void ccw_device_disband_done(struct ccw_device *, int); | |
| 112 | ||
| 113 | int ccw_device_call_handler(struct ccw_device *); | |
| 114 | ||
| 115 | int ccw_device_stlck(struct ccw_device *); | |
| 116 | ||
| 117 | /* qdio needs this. */ | |
| 118 | void ccw_device_set_timeout(struct ccw_device *, int); | |
| a8237fc4 | 119 | extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *); |
| 2b67fc46 | 120 | extern struct bus_type ccw_bus_type; |
| 1da177e4 | 121 | |
| 94bb0633 | 122 | /* Channel measurement facility related */ |
| 1da177e4 | 123 | void retry_set_schib(struct ccw_device *cdev); |
| 94bb0633 CH |
124 | void cmf_retry_copy_block(struct ccw_device *); |
| 125 | int cmf_reenable(struct ccw_device *); | |
| 1da177e4 | 126 | #endif |