qemu/include/hw/s390x/s390-ccw.h
Xiao Feng Ren 8ca2b376b4 s390x/css: introduce and realize ccw-request callback
Introduce a new callback on subchannel to handle ccw-request.
Realize the callback in vfio-ccw device. Besides, resort to
the event notifier handler to handling the ccw-request results.
1. Pread the I/O results via MMIO region.
2. Update the scsw info to guest.
3. Inject an I/O interrupt to notify guest the I/O result.

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-11-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-19 12:29:01 +02:00

40 lines
1.1 KiB
C

/*
* s390 CCW Assignment Support
*
* Copyright 2017 IBM Corp.
* Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
* Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef HW_S390_CCW_H
#define HW_S390_CCW_H
#include "hw/s390x/ccw-device.h"
#define TYPE_S390_CCW "s390-ccw"
#define S390_CCW_DEVICE(obj) \
OBJECT_CHECK(S390CCWDevice, (obj), TYPE_S390_CCW)
#define S390_CCW_DEVICE_CLASS(klass) \
OBJECT_CLASS_CHECK(S390CCWDeviceClass, (klass), TYPE_S390_CCW)
#define S390_CCW_DEVICE_GET_CLASS(obj) \
OBJECT_GET_CLASS(S390CCWDeviceClass, (obj), TYPE_S390_CCW)
typedef struct S390CCWDevice {
CcwDevice parent_obj;
CssDevId hostid;
char *mdevid;
} S390CCWDevice;
typedef struct S390CCWDeviceClass {
CCWDeviceClass parent_class;
void (*realize)(S390CCWDevice *dev, char *sysfsdev, Error **errp);
void (*unrealize)(S390CCWDevice *dev, Error **errp);
int (*handle_request) (ORB *, SCSW *, void *);
} S390CCWDeviceClass;
#endif