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s390/cio: move ccw_device_call_handler 

device_ops.c should only contain functions that are called by ccw device
drivers. Move the cio internal function ccw_device_call_handler to
device_fsm.c where it's used. Remove some useless comments while at it.

Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2015-10-26 12:35:06 +01:00 committed by Martin Schwidefsky
parent 439eb131f7
commit 8421d212e8
3 changed files with 38 additions and 48 deletions
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2
drivers/s390/cio/device.h
View File

@ -128,8 +128,6 @@ void ccw_device_disband_done(struct ccw_device *, int);
void ccw_device_stlck_start(struct ccw_device *, void *, void *, void *);
void ccw_device_stlck_done(struct ccw_device *, void *, int);
int ccw_device_call_handler(struct ccw_device *);
int ccw_device_stlck(struct ccw_device *);
/* Helper function for machine check handling. */

38
drivers/s390/cio/device_fsm.c
View File

@ -730,6 +730,44 @@ static void ccw_device_boxed_verify(struct ccw_device *cdev,
css_schedule_eval(sch->schid);
}
/*
* Pass interrupt to device driver.
*/
static int ccw_device_call_handler(struct ccw_device *cdev)
{
unsigned int stctl;
int ending_status;
/*
* we allow for the device action handler if .
* - we received ending status
* - the action handler requested to see all interrupts
* - we received an intermediate status
* - fast notification was requested (primary status)
* - unsolicited interrupts
*/
stctl = scsw_stctl(&cdev->private->irb.scsw);
ending_status = (stctl & SCSW_STCTL_SEC_STATUS) ||
(stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) ||
(stctl == SCSW_STCTL_STATUS_PEND);
if (!ending_status &&
!cdev->private->options.repall &&
!(stctl & SCSW_STCTL_INTER_STATUS) &&
!(cdev->private->options.fast &&
(stctl & SCSW_STCTL_PRIM_STATUS)))
return 0;
if (ending_status)
ccw_device_set_timeout(cdev, 0);
if (cdev->handler)
cdev->handler(cdev, cdev->private->intparm,
&cdev->private->irb);
memset(&cdev->private->irb, 0, sizeof(struct irb));
return 1;
}
/*
* Got an interrupt for a normal io (state online).
*/

46
drivers/s390/cio/device_ops.c
View File

@ -412,52 +412,6 @@ int ccw_device_resume(struct ccw_device *cdev)
return cio_resume(sch);
}
/*
* Pass interrupt to device driver.
*/
int
ccw_device_call_handler(struct ccw_device *cdev)
{
unsigned int stctl;
int ending_status;
/*
* we allow for the device action handler if .
* - we received ending status
* - the action handler requested to see all interrupts
* - we received an intermediate status
* - fast notification was requested (primary status)
* - unsolicited interrupts
*/
stctl = scsw_stctl(&cdev->private->irb.scsw);
ending_status = (stctl & SCSW_STCTL_SEC_STATUS) ||
(stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) ||
(stctl == SCSW_STCTL_STATUS_PEND);
if (!ending_status &&
!cdev->private->options.repall &&
!(stctl & SCSW_STCTL_INTER_STATUS) &&
!(cdev->private->options.fast &&
(stctl & SCSW_STCTL_PRIM_STATUS)))
return 0;
/* Clear pending timers for device driver initiated I/O. */
if (ending_status)
ccw_device_set_timeout(cdev, 0);
/*
* Now we are ready to call the device driver interrupt handler.
*/
if (cdev->handler)
cdev->handler(cdev, cdev->private->intparm,
&cdev->private->irb);
/*
* Clear the old and now useless interrupt response block.
*/
memset(&cdev->private->irb, 0, sizeof(struct irb));
return 1;
}
/**
* ccw_device_get_ciw() - Search for CIW command in extended sense data.
* @cdev: ccw device to inspect