git://bbs.cooldavid.org / net-next-2.6.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 | ||
| cd6b4f27 CH |
8 | #include "io_sch.h" |
| 9 | ||
| 1da177e4 LT |
10 | /* |
| 11 | * states of the device statemachine | |
| 12 | */ | |
| 13 | enum dev_state { | |
| 14 | DEV_STATE_NOT_OPER, | |
| 15 | DEV_STATE_SENSE_PGID, | |
| 16 | DEV_STATE_SENSE_ID, | |
| 17 | DEV_STATE_OFFLINE, | |
| 18 | DEV_STATE_VERIFY, | |
| 19 | DEV_STATE_ONLINE, | |
| 20 | DEV_STATE_W4SENSE, | |
| 21 | DEV_STATE_DISBAND_PGID, | |
| 22 | DEV_STATE_BOXED, | |
| 23 | /* states to wait for i/o completion before doing something */ | |
| 24 | DEV_STATE_CLEAR_VERIFY, | |
| 25 | DEV_STATE_TIMEOUT_KILL, | |
| 1da177e4 LT |
26 | DEV_STATE_QUIESCE, |
| 27 | /* special states for devices gone not operational */ | |
| 28 | DEV_STATE_DISCONNECTED, | |
| 29 | DEV_STATE_DISCONNECTED_SENSE_ID, | |
| 30 | DEV_STATE_CMFCHANGE, | |
| 94bb0633 | 31 | DEV_STATE_CMFUPDATE, |
| 1da177e4 LT |
32 | /* last element! */ |
| 33 | NR_DEV_STATES | |
| 34 | }; | |
| 35 | ||
| 36 | /* | |
| 37 | * asynchronous events of the device statemachine | |
| 38 | */ | |
| 39 | enum dev_event { | |
| 40 | DEV_EVENT_NOTOPER, | |
| 41 | DEV_EVENT_INTERRUPT, | |
| 42 | DEV_EVENT_TIMEOUT, | |
| 43 | DEV_EVENT_VERIFY, | |
| 44 | /* last element! */ | |
| 45 | NR_DEV_EVENTS | |
| 46 | }; | |
| 47 | ||
| 48 | struct ccw_device; | |
| 49 | ||
| 50 | /* | |
| 51 | * action called through jumptable | |
| 52 | */ | |
| 53 | typedef void (fsm_func_t)(struct ccw_device *, enum dev_event); | |
| 54 | extern fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS]; | |
| 55 | ||
| 56 | static inline void | |
| 57 | dev_fsm_event(struct ccw_device *cdev, enum dev_event dev_event) | |
| 58 | { | |
| 59 | dev_jumptable[cdev->private->state][dev_event](cdev, dev_event); | |
| 60 | } | |
| 61 | ||
| 62 | /* | |
| 63 | * Delivers 1 if the device state is final. | |
| 64 | */ | |
| 65 | static inline int | |
| 66 | dev_fsm_final_state(struct ccw_device *cdev) | |
| 67 | { | |
| 68 | return (cdev->private->state == DEV_STATE_NOT_OPER || | |
| 69 | cdev->private->state == DEV_STATE_OFFLINE || | |
| 70 | cdev->private->state == DEV_STATE_ONLINE || | |
| 71 | cdev->private->state == DEV_STATE_BOXED); | |
| 72 | } | |
| 73 | ||
| 74 | extern struct workqueue_struct *ccw_device_work; | |
| 40154b82 PO |
75 | extern wait_queue_head_t ccw_device_init_wq; |
| 76 | extern atomic_t ccw_device_init_count; | |
| 1da177e4 LT |
77 | |
| 78 | void io_subchannel_recog_done(struct ccw_device *cdev); | |
| 13952ec1 | 79 | void io_subchannel_init_config(struct subchannel *sch); |
| 1da177e4 LT |
80 | |
| 81 | int ccw_device_cancel_halt_clear(struct ccw_device *); | |
| 82 | ||
| eb32ae8d | 83 | void ccw_device_do_unbind_bind(struct work_struct *); |
| d7b5a4c9 CH |
84 | void ccw_device_move_to_orphanage(struct work_struct *); |
| 85 | int ccw_device_is_orphan(struct ccw_device *); | |
| 1da177e4 LT |
86 | |
| 87 | int ccw_device_recognition(struct ccw_device *); | |
| 88 | int ccw_device_online(struct ccw_device *); | |
| 89 | int ccw_device_offline(struct ccw_device *); | |
| c4621a62 | 90 | void ccw_device_schedule_sch_unregister(struct ccw_device *); |
| ecf5d9ef | 91 | int ccw_purge_blacklisted(void); |
| 1da177e4 LT |
92 | |
| 93 | /* Function prototypes for device status and basic sense stuff. */ | |
| 94 | void ccw_device_accumulate_irb(struct ccw_device *, struct irb *); | |
| 95 | void ccw_device_accumulate_basic_sense(struct ccw_device *, struct irb *); | |
| 96 | int ccw_device_accumulate_and_sense(struct ccw_device *, struct irb *); | |
| 97 | int ccw_device_do_sense(struct ccw_device *, struct irb *); | |
| 98 | ||
| 99 | /* Function prototypes for sense id stuff. */ | |
| 100 | void ccw_device_sense_id_start(struct ccw_device *); | |
| 101 | void ccw_device_sense_id_irq(struct ccw_device *, enum dev_event); | |
| 102 | void ccw_device_sense_id_done(struct ccw_device *, int); | |
| 103 | ||
| 104 | /* Function prototypes for path grouping stuff. */ | |
| 105 | void ccw_device_sense_pgid_start(struct ccw_device *); | |
| 106 | void ccw_device_sense_pgid_irq(struct ccw_device *, enum dev_event); | |
| 107 | void ccw_device_sense_pgid_done(struct ccw_device *, int); | |
| 108 | ||
| 109 | void ccw_device_verify_start(struct ccw_device *); | |
| 110 | void ccw_device_verify_irq(struct ccw_device *, enum dev_event); | |
| 111 | void ccw_device_verify_done(struct ccw_device *, int); | |
| 112 | ||
| 113 | void ccw_device_disband_start(struct ccw_device *); | |
| 114 | void ccw_device_disband_irq(struct ccw_device *, enum dev_event); | |
| 115 | void ccw_device_disband_done(struct ccw_device *, int); | |
| 116 | ||
| 117 | int ccw_device_call_handler(struct ccw_device *); | |
| 118 | ||
| 119 | int ccw_device_stlck(struct ccw_device *); | |
| 120 | ||
| c820de39 CH |
121 | /* Helper function for machine check handling. */ |
| 122 | void ccw_device_trigger_reprobe(struct ccw_device *); | |
| 123 | void ccw_device_kill_io(struct ccw_device *); | |
| 124 | int ccw_device_notify(struct ccw_device *, int); | |
| 91c36919 | 125 | void ccw_device_set_notoper(struct ccw_device *cdev); |
| c820de39 | 126 | |
| 1da177e4 LT |
127 | /* qdio needs this. */ |
| 128 | void ccw_device_set_timeout(struct ccw_device *, int); | |
| a8237fc4 | 129 | extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *); |
| 2b67fc46 | 130 | extern struct bus_type ccw_bus_type; |
| 1da177e4 | 131 | |
| 94bb0633 | 132 | /* Channel measurement facility related */ |
| 1da177e4 | 133 | void retry_set_schib(struct ccw_device *cdev); |
| 94bb0633 CH |
134 | void cmf_retry_copy_block(struct ccw_device *); |
| 135 | int cmf_reenable(struct ccw_device *); | |
| a806170e | 136 | extern struct device_attribute dev_attr_cmb_enable; |
| 1da177e4 | 137 | #endif |