ccw_device_start_timeout_key — start a s390 channel program with timeout and key
int ccw_device_start_timeout_key ( | struct ccw_device * cdev, |
| struct ccw1 * cpa, | |
| unsigned long intparm, | |
| __u8 lpm, | |
| __u8 key, | |
| unsigned long flags, | |
int expires); |
cdevtarget ccw device
cpalogical start address of channel program
intparm
user specific interruption parameter; will be presented back to
cdev's interrupt handler. Allows a device driver to associate
the interrupt with a particular I/O request.
lpmdefines the channel path to be used for a specific I/O request. A value of 0 will make cio use the opm.
keystorage key to be used for the I/O
flagsadditional flags; defines the action to be performed for I/O processing.
expirestimeout value in jiffies
Start a S/390 channel program. When the interrupt arrives, the
IRQ handler is called, either immediately, delayed (dev-end missing,
or sense required) or never (no IRQ handler registered).
This function notifies the device driver if the channel program has not
completed during the time specified by expires. If a timeout occurs, the
channel program is terminated via xsch, hsch or csch, and the device's
interrupt handler will be called with an irb containing ERR_PTR(-ETIMEDOUT).