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struct_ccw_device(9) [centos man page]

STRUCT 
CCW_DEVICE(9) The ccw bus STRUCT CCW_DEVICE(9) NAME
struct_ccw_device - channel attached device SYNOPSIS
struct ccw_device { spinlock_t * ccwlock; struct ccw_device_id id; struct ccw_driver * drv; struct device dev; int online; void (* handler) (struct ccw_device *, unsigned long, struct irb *); }; MEMBERS
ccwlock pointer to device lock id id of this device drv ccw driver for this device dev embedded device structure online online status of device handler interrupt handler DESCRIPTION
handler is a member of the device rather than the driver since a driver can have different interrupt handlers for different ccw devices (multi-subchannel drivers). AUTHOR
Cornelia Huck <cornelia.huck@de.ibm.com> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRUCT CCW_DEVICE(9)

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CCW_DEVICE_START_KEY(9) 					    The ccw bus 					   CCW_DEVICE_START_KEY(9)

NAME
ccw_device_start_key - start a s390 channel program with key SYNOPSIS
int ccw_device_start_key(struct ccw_device * cdev, struct ccw1 * cpa, unsigned long intparm, __u8 lpm, __u8 key, unsigned long flags); ARGUMENTS
cdev target ccw device cpa logical 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. lpm defines the channel path to be used for a specific I/O request. A value of 0 will make cio use the opm. key storage key to be used for the I/O flags additional flags; defines the action to be performed for I/O processing. DESCRIPTION
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). RETURNS
0, if the operation was successful; -EBUSY, if the device is busy, or status pending; -EACCES, if no path specified in lpm is operational; -ENODEV, if the device is not operational. CONTEXT
Interrupts disabled, ccw device lock held AUTHOR
Cornelia Huck <cornelia.huck@de.ibm.com> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 CCW_DEVICE_START_KEY(9)

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