/*

* 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)));

enum cdev_todo {

CDEV_TODO_NOTHING,

CDEV_TODO_ENABLE_CMF,

CDEV_TODO_REBIND,

CDEV_TODO_REGISTER,

CDEV_TODO_UNREG,

CDEV_TODO_UNREG_EVAL,

};

#define FAKE_CMD_IRB 1

#define FAKE_TM_IRB 2

struct ccw_device_dma_area {

struct senseid senseid; /* SenseID info */

struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */

struct irb irb; /* device status */

struct pgid pgid[8]; /* path group IDs per chpid*/

};

struct ccw_device_private {

struct ccw_device *cdev;

struct subchannel *sch;

int state; /* device state */

atomic_t onoff;

struct ccw_dev_id dev_id; /* device id */

struct ccw_request req; /* internal I/O request */

int iretry;

u8 pgid_valid_mask; /* mask of valid PGIDs */

u8 pgid_todo_mask; /* mask of PGIDs to be adjusted */

u8 pgid_reset_mask; /* mask of PGIDs which were reset */

u8 path_noirq_mask; /* mask of paths for which no irq was

received */

u8 path_notoper_mask; /* mask of paths which were found

not operable */

u8 path_gone_mask; /* mask of paths, that became unavailable */

u8 path_new_mask; /* mask of paths, that became available */

u8 path_broken_mask; /* mask of paths, which were found to be

unusable */

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 */

unsigned int mpath:1; /* do multipathing */

} __attribute__ ((packed)) options;

struct {

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:2; /* deliver faked irb */

unsigned int pgroup:1; /* pathgroup is set up */

unsigned int mpath:1; /* multipathing is set up */

unsigned int pgid_unknown:1;/* unknown pgid state */