diff options
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index c1e487f774c..fd63b2f2bda 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -4,8 +4,7 @@ * Horst Hummel <Horst.Hummel@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> * Bugreports.to..: <Linux390@de.ibm.com> - * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 - * + * Copyright IBM Corp. 1999, 2009 */ #ifndef DASD_INT_H @@ -173,6 +172,7 @@ struct dasd_ccw_req { void *data; /* pointer to data area */ /* these are important for recovering erroneous requests */ + int intrc; /* internal error, e.g. from start_IO */ struct irb irb; /* device status in case of an error */ struct dasd_ccw_req *refers; /* ERP-chain queueing. */ void *function; /* originating ERP action */ @@ -294,6 +294,10 @@ struct dasd_discipline { int (*fill_geometry) (struct dasd_block *, struct hd_geometry *); int (*fill_info) (struct dasd_device *, struct dasd_information2_t *); int (*ioctl) (struct dasd_block *, unsigned int, void __user *); + + /* suspend/resume functions */ + int (*freeze) (struct dasd_device *); + int (*restore) (struct dasd_device *); }; extern struct dasd_discipline *dasd_diag_discipline_pointer; @@ -366,6 +370,7 @@ struct dasd_device { atomic_t tasklet_scheduled; struct tasklet_struct tasklet; struct work_struct kick_work; + struct work_struct restore_device; struct timer_list timer; debug_info_t *debug_area; @@ -409,6 +414,8 @@ struct dasd_block { #define DASD_STOPPED_PENDING 4 /* long busy */ #define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */ #define DASD_STOPPED_SU 16 /* summary unit check handling */ +#define DASD_STOPPED_PM 32 /* pm state transition */ +#define DASD_UNRESUMED_PM 64 /* pm resume failed state */ /* per device flags */ #define DASD_FLAG_OFFLINE 3 /* device is in offline processing */ @@ -555,6 +562,7 @@ void dasd_free_block(struct dasd_block *); void dasd_enable_device(struct dasd_device *); void dasd_set_target_state(struct dasd_device *, int); void dasd_kick_device(struct dasd_device *); +void dasd_restore_device(struct dasd_device *); void dasd_add_request_head(struct dasd_ccw_req *); void dasd_add_request_tail(struct dasd_ccw_req *); @@ -577,8 +585,10 @@ 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); 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 *); -int dasd_generic_read_dev_chars(struct dasd_device *, char *, void **, int); +int dasd_generic_read_dev_chars(struct dasd_device *, char *, void *, int); char *dasd_get_sense(struct irb *); /* externals in dasd_devmap.c */ |