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pci: allow devices being tagged as not hotpluggable.

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This patch adds a field to PCIDeviceInfo to tag devices as being
not hotpluggable.  Any attempt to plug-in or -out such a device
will throw an error.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gerd Hoffmann 2011-01-06 15:14:37 +01:00 committed by Michael S. Tsirkin
parent c574ba5a4c
commit 180c22e18b
4 changed files with 20 additions and 0 deletions
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10
hw/pci.c
View File

@ -1624,6 +1624,11 @@ static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
info->is_bridge);
if (pci_dev == NULL)
return -1;
if (qdev->hotplugged && info->no_hotplug) {
qerror_report(QERR_DEVICE_NO_HOTPLUG, info->qdev.name);
do_pci_unregister_device(pci_dev);
return -1;
}
rc = info->init(pci_dev);
if (rc != 0) {
do_pci_unregister_device(pci_dev);
@ -1656,7 +1661,12 @@ static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
static int pci_unplug_device(DeviceState *qdev)
{
PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev);
PCIDeviceInfo *info = container_of(qdev->info, PCIDeviceInfo, qdev);
if (info->no_hotplug) {
qerror_report(QERR_DEVICE_NO_HOTPLUG, info->qdev.name);
return -1;
}
return dev->bus->hotplug(dev->bus->hotplug_qdev, dev,
PCI_HOTPLUG_DISABLED);
}

3
hw/pci.h
View File

@ -436,6 +436,9 @@ typedef struct {
/* pcie stuff */
int is_express; /* is this device pci express? */
/* device isn't hot-pluggable */
int no_hotplug;
/* rom bar */
const char *romfile;
} PCIDeviceInfo;

4
qerror.c
View File

@ -100,6 +100,10 @@ static const QErrorStringTable qerror_table[] = {
.error_fmt = QERR_DEVICE_NO_BUS,
.desc = "Device '%(device)' has no child bus",
},
{
.error_fmt = QERR_DEVICE_NO_HOTPLUG,
.desc = "Device '%(device)' does not support hotplugging",
},
{
.error_fmt = QERR_DUPLICATE_ID,
.desc = "Duplicate ID '%(id)' for %(object)",

3
qerror.h
View File

@ -90,6 +90,9 @@ QError *qobject_to_qerror(const QObject *obj);
#define QERR_DEVICE_NO_BUS \
"{ 'class': 'DeviceNoBus', 'data': { 'device': %s } }"
#define QERR_DEVICE_NO_HOTPLUG \
"{ 'class': 'DeviceNoHotplug', 'data': { 'device': %s } }"
#define QERR_DUPLICATE_ID \
"{ 'class': 'DuplicateId', 'data': { 'id': %s, 'object': %s } }"