New class for vfio-user with its class and instance
constructors and destructors, and its pci ops.
Signed-off-by: Elena Ufimtseva <elena.ufimts...@oracle.com>
Signed-off-by: John G Johnson <john.g.john...@oracle.com>
Signed-off-by: Jagannathan Raman <jag.ra...@oracle.com>
---
hw/vfio/pci.h | 8 +++++
hw/vfio/common.c | 5 ++++
hw/vfio/pci.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
hw/vfio/Kconfig | 10 +++++++
4 files changed, 113 insertions(+)
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index bbc78aa..59e636c 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -187,6 +187,14 @@ struct VFIOKernPCIDevice {
VFIOPCIDevice device;
};
+#define TYPE_VFIO_USER_PCI "vfio-user-pci"
+OBJECT_DECLARE_SIMPLE_TYPE(VFIOUserPCIDevice, VFIO_USER_PCI)
+
+struct VFIOUserPCIDevice {
+ VFIOPCIDevice device;
+ char *sock_name;
+};
+
/* Use uin32_t for vendor & device so PCI_ANY_ID expands and cannot match hw */
static inline bool vfio_pci_is(VFIOPCIDevice *vdev, uint32_t vendor, uint32_t
device)
{
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index cce38d8..f07023c 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1742,6 +1742,11 @@ void vfio_reset_handler(void *opaque)
QLIST_FOREACH(group, &vfio_group_list, next) {
QLIST_FOREACH(vbasedev, &group->device_list, next) {
if (vbasedev->dev->realized && vbasedev->needs_reset) {
+ if (vbasedev->ops->vfio_hot_reset_multi == NULL) {
+ error_printf("%s: No hot reset handler specified\n",
+ vbasedev->name);
+ continue;
+ }
vbasedev->ops->vfio_hot_reset_multi(vbasedev);
}
}
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 63a42ae..6abe474 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -19,6 +19,7 @@
*/
#include "qemu/osdep.h"
+#include CONFIG_DEVICES
#include <linux/vfio.h>
#include <sys/ioctl.h>
@@ -3376,3 +3377,92 @@ static void register_vfio_pci_dev_type(void)
}
type_init(register_vfio_pci_dev_type)
+
+
+#ifdef CONFIG_VFIO_USER_PCI
+
+/*
+ * vfio-user routines.
+ */
+
+/*
+ * Emulated devices don't use host hot reset
+ */
+static void vfio_user_compute_needs_reset(VFIODevice *vbasedev)
+{
+ vbasedev->needs_reset = false;
+}
+
+static VFIODeviceOps vfio_user_pci_ops = {
+ .vfio_compute_needs_reset = vfio_user_compute_needs_reset,
+ .vfio_eoi = vfio_intx_eoi,
+ .vfio_get_object = vfio_pci_get_object,
+ .vfio_save_config = vfio_pci_save_config,
+ .vfio_load_config = vfio_pci_load_config,
+};
+
+static void vfio_user_pci_realize(PCIDevice *pdev, Error **errp)
+{
+ ERRP_GUARD();
+ VFIOUserPCIDevice *udev = VFIO_USER_PCI(pdev);
+ VFIOPCIDevice *vdev = VFIO_PCI_BASE(pdev);
+ VFIODevice *vbasedev = &vdev->vbasedev;
+
+ /*
+ * TODO: make option parser understand SocketAddress
+ * and use that instead of having scalar options
+ * for each socket type.
+ */
+ if (!udev->sock_name) {
+ error_setg(errp, "No socket specified");
+ error_append_hint(errp, "Use -device vfio-user-pci,socket=<name>\n");
+ return;
+ }
+
+ vbasedev->name = g_strdup_printf("VFIO user <%s>", udev->sock_name);
+ vbasedev->dev = DEVICE(vdev);
+ vbasedev->fd = -1;
+ vbasedev->type = VFIO_DEVICE_TYPE_PCI;
+ vbasedev->ops = &vfio_user_pci_ops;
+
+}
+
+static void vfio_user_instance_finalize(Object *obj)
+{
+ VFIOPCIDevice *vdev = VFIO_PCI_BASE(obj);
+
+ vfio_put_device(vdev);
+}
+
+static Property vfio_user_pci_dev_properties[] = {
+ DEFINE_PROP_STRING("socket", VFIOUserPCIDevice, sock_name),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void vfio_user_pci_dev_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *pdc = PCI_DEVICE_CLASS(klass);
+
+ device_class_set_props(dc, vfio_user_pci_dev_properties);
+ dc->desc = "VFIO over socket PCI device assignment";
+ pdc->realize = vfio_user_pci_realize;
+}
+
+static const TypeInfo vfio_user_pci_dev_info = {
+ .name = TYPE_VFIO_USER_PCI,
+ .parent = TYPE_VFIO_PCI_BASE,
+ .instance_size = sizeof(VFIOUserPCIDevice),
+ .class_init = vfio_user_pci_dev_class_init,
+ .instance_init = vfio_instance_init,
+ .instance_finalize = vfio_user_instance_finalize,
+};
+
+static void register_vfio_user_dev_type(void)
+{
+ type_register_static(&vfio_user_pci_dev_info);
+}
+
+type_init(register_vfio_user_dev_type)
+
+#endif /* VFIO_USER_PCI */
diff --git a/hw/vfio/Kconfig b/hw/vfio/Kconfig
index 7cdba05..301894e 100644
--- a/hw/vfio/Kconfig
+++ b/hw/vfio/Kconfig
@@ -2,6 +2,10 @@ config VFIO
bool
depends on LINUX
+config VFIO_USER
+ bool
+ depends on VFIO
+
config VFIO_PCI
bool
default y
@@ -9,6 +13,12 @@ config VFIO_PCI
select EDID
depends on LINUX && PCI
+config VFIO_USER_PCI
+ bool
+ default y
+ select VFIO_USER
+ depends on VFIO_PCI
+
config VFIO_CCW
bool
default y
--
1.8.3.1
