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[Qemu-devel] [PATCH 1/5] [S390] Add hotplug support
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 1/5] [S390] Add hotplug support |
Date: |
Tue, 24 Aug 2010 00:02:27 +0200 |
I just submitted a few patches that enable the s390 virtio bus to receive
a hotplug add event. This patch implements the qemu side of it, so that new
hotplug events can be submitted to the guest.
Signed-off-by: Alexander Graf <address@hidden>
---
hw/s390-virtio-bus.c | 9 +++++++++
hw/s390-virtio-bus.h | 5 +++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index fe6884d..3ded3f9 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -76,6 +76,9 @@ VirtIOS390Bus *s390_virtio_bus_init(ram_addr_t *ram_size)
bus->dev_offs = bus->dev_page;
bus->next_ring = bus->dev_page + TARGET_PAGE_SIZE;
+ /* Enable hotplugging */
+ _bus->allow_hotplug = 1;
+
/* Allocate RAM for VirtIO device pages (descriptors, queues, rings) */
*ram_size += S390_DEVICE_PAGES * TARGET_PAGE_SIZE;
@@ -103,6 +106,11 @@ static int s390_virtio_device_init(VirtIOS390Device *dev,
VirtIODevice *vdev)
dev->host_features = vdev->get_features(vdev, dev->host_features);
s390_virtio_device_sync(dev);
+ if (dev->qdev.hotplugged) {
+ kvm_s390_virtio_irq(s390_cpu_addr2state(0), VIRTIO_PARAM_DEV_ADD,
+ dev->dev_offs);
+ }
+
return 0;
}
@@ -365,6 +373,7 @@ static void
s390_virtio_bus_register_withprop(VirtIOS390DeviceInfo *info)
{
info->qdev.init = s390_virtio_busdev_init;
info->qdev.bus_info = &s390_virtio_bus_info;
+ info->qdev.unplug = qdev_simple_unplug_cb;
assert(info->qdev.size >= sizeof(VirtIOS390Device));
qdev_register(&info->qdev);
diff --git a/hw/s390-virtio-bus.h b/hw/s390-virtio-bus.h
index 333fea8..7a2f8dc 100644
--- a/hw/s390-virtio-bus.h
+++ b/hw/s390-virtio-bus.h
@@ -32,6 +32,11 @@
#define VIRTIO_RING_LEN (TARGET_PAGE_SIZE * 3)
#define S390_DEVICE_PAGES 256
+#define VIRTIO_PARAM_MASK 0xff
+#define VIRTIO_PARAM_VRING_INTERRUPT 0x0
+#define VIRTIO_PARAM_CONFIG_CHANGED 0x1
+#define VIRTIO_PARAM_DEV_ADD 0x2
+
typedef struct VirtIOS390Device {
DeviceState qdev;
ram_addr_t dev_offs;
--
1.6.0.2
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, (continued)
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Daniel P. Berrange, 2010/08/24
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Alexander Graf, 2010/08/24
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Daniel P. Berrange, 2010/08/24
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Alexander Graf, 2010/08/24
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Daniel P. Berrange, 2010/08/24
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Markus Armbruster, 2010/08/27
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Anthony Liguori, 2010/08/24
- Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Alexander Graf, 2010/08/24
Re: [Qemu-devel] [PATCH 4/5] Add generic drive hotplugging, Markus Armbruster, 2010/08/27
[Qemu-devel] [PATCH 1/5] [S390] Add hotplug support,
Alexander Graf <=