mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
c02087162a
- Fix existing kerneldoc-style comments. - Move descriptions of functions from cmb.h to cmf.c. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
59 lines
2.1 KiB
C
59 lines
2.1 KiB
C
#ifndef S390_CMB_H
|
|
#define S390_CMB_H
|
|
/**
|
|
* struct cmbdata - channel measurement block data for user space
|
|
* @size: size of the stored data
|
|
* @elapsed_time: time since last sampling
|
|
* @ssch_rsch_count: number of ssch and rsch
|
|
* @sample_count: number of samples
|
|
* @device_connect_time: time of device connect
|
|
* @function_pending_time: time of function pending
|
|
* @device_disconnect_time: time of device disconnect
|
|
* @control_unit_queuing_time: time of control unit queuing
|
|
* @device_active_only_time: time of device active only
|
|
* @device_busy_time: time of device busy (ext. format)
|
|
* @initial_command_response_time: initial command response time (ext. format)
|
|
*
|
|
* All values are stored as 64 bit for simplicity, especially
|
|
* in 32 bit emulation mode. All time values are normalized to
|
|
* nanoseconds.
|
|
* Currently, two formats are known, which differ by the size of
|
|
* this structure, i.e. the last two members are only set when
|
|
* the extended channel measurement facility (first shipped in
|
|
* z990 machines) is activated.
|
|
* Potentially, more fields could be added, which would result in a
|
|
* new ioctl number.
|
|
*/
|
|
struct cmbdata {
|
|
__u64 size;
|
|
__u64 elapsed_time;
|
|
/* basic and exended format: */
|
|
__u64 ssch_rsch_count;
|
|
__u64 sample_count;
|
|
__u64 device_connect_time;
|
|
__u64 function_pending_time;
|
|
__u64 device_disconnect_time;
|
|
__u64 control_unit_queuing_time;
|
|
__u64 device_active_only_time;
|
|
/* extended format only: */
|
|
__u64 device_busy_time;
|
|
__u64 initial_command_response_time;
|
|
};
|
|
|
|
/* enable channel measurement */
|
|
#define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER, 32)
|
|
/* enable channel measurement */
|
|
#define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER, 33)
|
|
/* read channel measurement data */
|
|
#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER, 33, struct cmbdata)
|
|
|
|
#ifdef __KERNEL__
|
|
struct ccw_device;
|
|
extern int enable_cmf(struct ccw_device *cdev);
|
|
extern int disable_cmf(struct ccw_device *cdev);
|
|
extern u64 cmf_read(struct ccw_device *cdev, int index);
|
|
extern int cmf_readall(struct ccw_device *cdev, struct cmbdata *data);
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* S390_CMB_H */
|