diff options
Diffstat (limited to 'drivers/s390/cio/css.h')
| -rw-r--r-- | drivers/s390/cio/css.h | 78 |
1 files changed, 16 insertions, 62 deletions
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index 81215ef3243..b7055452355 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -58,64 +58,6 @@ struct pgid { __u32 tod_high; /* high word TOD clock */ } __attribute__ ((packed)); -#define MAX_CIWS 8 - -/* - * sense-id response buffer layout - */ -struct senseid { - /* common part */ - __u8 reserved; /* always 0x'FF' */ - __u16 cu_type; /* control unit type */ - __u8 cu_model; /* control unit model */ - __u16 dev_type; /* device type */ - __u8 dev_model; /* device model */ - __u8 unused; /* padding byte */ - /* extended part */ - struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */ -} __attribute__ ((packed,aligned(4))); - -struct ccw_device_private { - struct ccw_device *cdev; - struct subchannel *sch; - int state; /* device state */ - atomic_t onoff; - unsigned long registered; - struct ccw_dev_id dev_id; /* device id */ - struct subchannel_id schid; /* subchannel number */ - __u8 imask; /* lpm mask for SNID/SID/SPGID */ - int iretry; /* retry counter SNID/SID/SPGID */ - struct { - unsigned int fast:1; /* post with "channel end" */ - unsigned int repall:1; /* report every interrupt status */ - unsigned int pgroup:1; /* do path grouping */ - unsigned int force:1; /* allow forced online */ - } __attribute__ ((packed)) options; - struct { - unsigned int pgid_single:1; /* use single path for Set PGID */ - unsigned int esid:1; /* Ext. SenseID supported by HW */ - unsigned int dosense:1; /* delayed SENSE required */ - unsigned int doverify:1; /* delayed path verification */ - unsigned int donotify:1; /* call notify function */ - unsigned int recog_done:1; /* dev. recog. complete */ - unsigned int fake_irb:1; /* deliver faked irb */ - unsigned int intretry:1; /* retry internal operation */ - } __attribute__((packed)) flags; - unsigned long intparm; /* user interruption parameter */ - struct qdio_irq *qdio_data; - struct irb irb; /* device status */ - struct senseid senseid; /* SenseID info */ - struct pgid pgid[8]; /* path group IDs per chpid*/ - struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */ - struct work_struct kick_work; - wait_queue_head_t wait_q; - struct timer_list timer; - void *cmb; /* measurement information */ - struct list_head cmb_list; /* list of measured devices */ - u64 cmb_start_time; /* clock value of cmb reset */ - void *cmb_wait; /* deferred cmb enable/disable */ -}; - /* * A css driver handles all subchannels of one type. * Currently, we only care about I/O subchannels (type 0), these @@ -123,25 +65,35 @@ struct ccw_device_private { */ struct subchannel; struct css_driver { + struct module *owner; unsigned int subchannel_type; struct device_driver drv; - void (*irq)(struct device *); - int (*notify)(struct device *, int); - void (*verify)(struct device *); - void (*termination)(struct device *); + void (*irq)(struct subchannel *); + int (*notify)(struct subchannel *, int); + void (*verify)(struct subchannel *); + void (*termination)(struct subchannel *); int (*probe)(struct subchannel *); int (*remove)(struct subchannel *); void (*shutdown)(struct subchannel *); + const char *name; }; +#define to_cssdriver(n) container_of(n, struct css_driver, drv) + /* * all css_drivers have the css_bus_type */ extern struct bus_type css_bus_type; +extern int css_driver_register(struct css_driver *); +extern void css_driver_unregister(struct css_driver *); + extern void css_sch_device_unregister(struct subchannel *); extern struct subchannel * get_subchannel_by_schid(struct subchannel_id); extern int css_init_done; +int for_each_subchannel_staged(int (*fn_known)(struct subchannel *, void *), + int (*fn_unknown)(struct subchannel_id, + void *), void *data); extern int for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *); extern void css_process_crw(int, int); extern void css_reiterate_subchannels(void); @@ -188,6 +140,8 @@ void css_schedule_eval(struct subchannel_id schid); void css_schedule_eval_all(void); int sch_is_pseudo_sch(struct subchannel *); +struct schib; +int css_sch_is_valid(struct schib *); extern struct workqueue_struct *slow_path_wq; |