diff options
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 500678d7116..df9f6999411 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -231,6 +231,11 @@ struct dasd_ccw_req { /* per dasd_ccw_req flags */ #define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */ #define DASD_CQR_FLAGS_FAILFAST 1 /* FAILFAST */ +#define DASD_CQR_VERIFY_PATH 2 /* path verification request */ +#define DASD_CQR_ALLOW_SLOCK 3 /* Try this request even when lock was + * stolen. Should not be combined with + * DASD_CQR_FLAGS_USE_ERP + */ /* Signature for error recovery functions. */ typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *); @@ -287,6 +292,14 @@ struct dasd_discipline { int (*do_analysis) (struct dasd_block *); /* + * This function is called, when new paths become available. + * Disciplins may use this callback to do necessary setup work, + * e.g. verify that new path is compatible with the current + * configuration. + */ + int (*verify_path)(struct dasd_device *, __u8); + + /* * Last things to do when a device is set online, and first things * when it is set offline. */ @@ -325,9 +338,9 @@ struct dasd_discipline { void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *, struct irb *); void (*dump_sense_dbf) (struct dasd_device *, struct irb *, char *); - - void (*handle_unsolicited_interrupt) (struct dasd_device *, - struct irb *); + void (*check_for_device_change) (struct dasd_device *, + struct dasd_ccw_req *, + struct irb *); /* i/o control functions. */ int (*fill_geometry) (struct dasd_block *, struct hd_geometry *); @@ -362,6 +375,13 @@ extern struct dasd_discipline *dasd_diag_discipline_pointer; #define DASD_EER_STATECHANGE 3 #define DASD_EER_PPRCSUSPEND 4 +struct dasd_path { + __u8 opm; + __u8 tbvpm; + __u8 ppm; + __u8 npm; +}; + struct dasd_device { /* Block device stuff. */ struct dasd_block *block; @@ -377,6 +397,7 @@ struct dasd_device { struct dasd_discipline *discipline; struct dasd_discipline *base_discipline; char *private; + struct dasd_path path_data; /* Device state and target state. */ int state, target; @@ -456,6 +477,9 @@ struct dasd_block { * confuse this with the user specified * read-only feature. */ +#define DASD_FLAG_IS_RESERVED 7 /* The device is reserved */ +#define DASD_FLAG_LOCK_STOLEN 8 /* The device lock was stolen */ + void dasd_put_device_wake(struct dasd_device *); @@ -620,10 +644,15 @@ void dasd_generic_remove (struct ccw_device *cdev); int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *); int dasd_generic_set_offline (struct ccw_device *cdev); int dasd_generic_notify(struct ccw_device *, int); +int dasd_generic_last_path_gone(struct dasd_device *); +int dasd_generic_path_operational(struct dasd_device *); + void dasd_generic_handle_state_change(struct dasd_device *); int dasd_generic_pm_freeze(struct ccw_device *); int dasd_generic_restore_device(struct ccw_device *); enum uc_todo dasd_generic_uc_handler(struct ccw_device *, struct irb *); +void dasd_generic_path_event(struct ccw_device *, int *); +int dasd_generic_verify_path(struct dasd_device *, __u8); int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int); char *dasd_get_sense(struct irb *); |