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s390x/css: introduce indicator refcounting interfaces

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Currently, virtio-ccw uses its own interfaces to keep indicators mapped
just once even if the same address has been registered multiple times.
These interfaces fit the PCI use case as well. Therefore, move them to
css and make them generic interfaces.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Yi Min Zhao 2016-01-27 16:05:26 +08:00 • committed by Cornelia Huck
parent 99abd0d6f7
commit a28d8391e3
4 changed files with 79 additions and 72 deletions
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11
hw/s390x/virtio-ccw.h
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@ -23,7 +23,8 @@
#include <hw/virtio/virtio-balloon.h>
#include <hw/virtio/virtio-rng.h>
#include <hw/virtio/virtio-bus.h>
#include <hw/s390x/s390_flic.h>
#include "css.h"
#define VIRTUAL_CSSID 0xfe
@ -75,14 +76,6 @@ typedef struct VirtIOCCWDeviceClass {
#define VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT 1
#define VIRTIO_CCW_FLAG_USE_IOEVENTFD (1 << VIRTIO_CCW_FLAG_USE_IOEVENTFD_BIT)
typedef struct IndAddr {
hwaddr addr;
uint64_t map;
unsigned long refcnt;
int len;
QTAILQ_ENTRY(IndAddr) sibling;
} IndAddr;
struct VirtioCcwDevice {
DeviceState parent_obj;
SubchDev *sch;