other versions
- wheezy 3.2.78-1
CCW_DEVICE_START_TIM(9) | The ccw bus | CCW_DEVICE_START_TIM(9) |
NAME¶
ccw_device_start_timeout - start a s390 channel program with timeoutSYNOPSIS¶
int
ccw_device_start_timeout(struct ccw_device * cdev,
struct ccw1 * cpa,
unsigned long intparm, __u8 lpm,
unsigned long flags,
int expires);
ARGUMENTS¶
cdevtarget 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.
flags
additional flags; defines the action to be
performed for I/O processing.
expires
timeout value in jiffies
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). 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).RETURNS¶
CONTEXT¶
Interrupts disabled, ccw device lock heldAUTHOR¶
Cornelia Huck <cornelia.huck@de.ibm.com>Author.
COPYRIGHT¶
March 2016 | Kernel Hackers Manual 3.2. |