diff options
Diffstat (limited to 'arch/s390/include/asm/ccwdev.h')
| -rw-r--r-- | arch/s390/include/asm/ccwdev.h | 48 |
1 files changed, 38 insertions, 10 deletions
diff --git a/arch/s390/include/asm/ccwdev.h b/arch/s390/include/asm/ccwdev.h index f4bd346a52d..b80e456d642 100644 --- a/arch/s390/include/asm/ccwdev.h +++ b/arch/s390/include/asm/ccwdev.h @@ -1,5 +1,5 @@ /* - * Copyright IBM Corp. 2002, 2009 + * Copyright IBM Corp. 2002, 2009 * * Author(s): Arnd Bergmann <arndb@de.ibm.com> * @@ -11,6 +11,8 @@ #include <linux/device.h> #include <linux/mod_devicetable.h> #include <asm/fcx.h> +#include <asm/irq.h> +#include <asm/schid.h> /* structs from asm/cio.h */ struct irb; @@ -91,41 +93,61 @@ struct ccw_device { void (*handler) (struct ccw_device *, unsigned long, struct irb *); }; +/* + * Possible events used by the path_event notifier. + */ +#define PE_NONE 0x0 +#define PE_PATH_GONE 0x1 /* A path is no longer available. */ +#define PE_PATH_AVAILABLE 0x2 /* A path has become available and + was successfully verified. */ +#define PE_PATHGROUP_ESTABLISHED 0x4 /* A pathgroup was reset and had + to be established again. */ + +/* + * Possible CIO actions triggered by the unit check handler. + */ +enum uc_todo { + UC_TODO_RETRY, + UC_TODO_RETRY_ON_NEW_PATH, + UC_TODO_STOP +}; /** * struct ccw driver - device driver for channel attached devices - * @owner: owning module * @ids: ids supported by this driver * @probe: function called on probe * @remove: function called on remove * @set_online: called when setting device online * @set_offline: called when setting device offline * @notify: notify driver of device state changes + * @path_event: notify driver of channel path events * @shutdown: called at device shutdown * @prepare: prepare for pm state transition * @complete: undo work done in @prepare * @freeze: callback for freezing during hibernation snapshotting * @thaw: undo work done in @freeze * @restore: callback for restoring after hibernation + * @uc_handler: callback for unit check handler * @driver: embedded device driver structure - * @name: device driver name + * @int_class: interruption class to use for accounting interrupts */ struct ccw_driver { - struct module *owner; struct ccw_device_id *ids; int (*probe) (struct ccw_device *); void (*remove) (struct ccw_device *); int (*set_online) (struct ccw_device *); int (*set_offline) (struct ccw_device *); int (*notify) (struct ccw_device *, int); + void (*path_event) (struct ccw_device *, int *); void (*shutdown) (struct ccw_device *); int (*prepare) (struct ccw_device *); void (*complete) (struct ccw_device *); int (*freeze)(struct ccw_device *); int (*thaw) (struct ccw_device *); int (*restore)(struct ccw_device *); + enum uc_todo (*uc_handler) (struct ccw_device *, struct irb *); struct device_driver driver; - char *name; + enum interruption_class int_class; }; extern struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv, @@ -182,6 +204,8 @@ int ccw_device_tm_start_timeout(struct ccw_device *, struct tcw *, unsigned long, u8, int); int ccw_device_tm_intrg(struct ccw_device *cdev); +int ccw_device_get_mdc(struct ccw_device *cdev, u8 mask); + extern int ccw_device_set_online(struct ccw_device *cdev); extern int ccw_device_set_offline(struct ccw_device *cdev); @@ -195,11 +219,15 @@ extern void ccw_device_get_id(struct ccw_device *, struct ccw_dev_id *); #define to_ccwdev(n) container_of(n, struct ccw_device, dev) #define to_ccwdrv(n) container_of(n, struct ccw_driver, driver) -extern struct ccw_device *ccw_device_probe_console(void); -extern int ccw_device_force_console(void); +extern struct ccw_device *ccw_device_create_console(struct ccw_driver *); +extern void ccw_device_destroy_console(struct ccw_device *); +extern int ccw_device_enable_console(struct ccw_device *); +extern void ccw_device_wait_idle(struct ccw_device *); +extern int ccw_device_force_console(struct ccw_device *); + +int ccw_device_siosl(struct ccw_device *); -// FIXME: these have to go -extern int _ccw_device_get_subchannel_number(struct ccw_device *); +extern void ccw_device_get_schid(struct ccw_device *, struct subchannel_id *); -extern void *ccw_device_get_chp_desc(struct ccw_device *, int); +struct channel_path_desc *ccw_device_get_chp_desc(struct ccw_device *, int); #endif /* _S390_CCWDEV_H_ */ |