virtio-9p: remove PCI dependencies from hw/9pfs/

Also move the 9p.h file to 9pfs/virtio-9p-device.h, for consistency
with the corresponding .c file.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/9pfs/virtio-9p-device.c

@@ -14,9 +14,9 @@
 #include "hw/virtio.h"
 #include "hw/pc.h"
 #include "qemu/sockets.h"
-#include "hw/virtio-pci.h"
 #include "virtio-9p.h"
 #include "fsdev/qemu-fsdev.h"
+#include "virtio-9p-device.h"
 #include "virtio-9p-xattr.h"
 #include "virtio-9p-coth.h"
 
@@ -136,54 +136,3 @@ VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf)
 
     return &s->vdev;
 }
-
-static int virtio_9p_init_pci(PCIDevice *pci_dev)
-{
-    VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
-    VirtIODevice *vdev;
-
-    vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf);
-    vdev->nvectors = proxy->nvectors;
-    virtio_init_pci(proxy, vdev);
-    /* make the actual value visible */
-    proxy->nvectors = vdev->nvectors;
-    return 0;
-}
-
-static Property virtio_9p_properties[] = {
-    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
-    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
-    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
-    DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
-    DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static void virtio_9p_class_init(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
-    k->init = virtio_9p_init_pci;
-    k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
-    k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
-    k->revision = VIRTIO_PCI_ABI_VERSION;
-    k->class_id = 0x2;
-    dc->props = virtio_9p_properties;
-    dc->reset = virtio_pci_reset;
-}
-
-static const TypeInfo virtio_9p_info = {
-    .name          = "virtio-9p-pci",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(VirtIOPCIProxy),
-    .class_init    = virtio_9p_class_init,
-};
-
-static void virtio_9p_register_types(void)
-{
-    type_register_static(&virtio_9p_info);
-    virtio_9p_set_fd_limit();
-}
-
-type_init(virtio_9p_register_types)

hw/9pfs/virtio-9p-device.h

@@ -11,8 +11,8 @@
  *
  */
 
-#ifndef QEMU_9P_H
+#ifndef QEMU_VIRTIO_9P_DEVICE_H
-#define QEMU_9P_H
+#define QEMU_VIRTIO_9P_DEVICE_H
 
 typedef struct V9fsConf
 {

hw/9pfs/virtio-9p.c

@@ -14,7 +14,6 @@
 #include "hw/virtio.h"
 #include "hw/pc.h"
 #include "qemu/sockets.h"
-#include "hw/virtio-pci.h"
 #include "virtio-9p.h"
 #include "fsdev/qemu-fsdev.h"
 #include "virtio-9p-xattr.h"
@@ -3269,7 +3268,7 @@ void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq)
     free_pdu(s, pdu);
 }
 
-void virtio_9p_set_fd_limit(void)
+static void __attribute__((__constructor__)) virtio_9p_set_fd_limit(void)
 {
     struct rlimit rlim;
     if (getrlimit(RLIMIT_NOFILE, &rlim) < 0) {

hw/9pfs/virtio-9p.h

@@ -389,7 +389,6 @@ static inline uint8_t v9fs_request_cancelled(V9fsPDU *pdu)
 }
 
 extern void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq);
-extern void virtio_9p_set_fd_limit(void);
 extern void v9fs_reclaim_fd(V9fsPDU *pdu);
 extern void v9fs_path_init(V9fsPath *path);
 extern void v9fs_path_free(V9fsPath *path);

hw/virtio-pci.c

@@ -255,7 +255,7 @@ static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy)
     proxy->ioeventfd_started = false;
 }
 
-void virtio_pci_reset(DeviceState *d)
+static void virtio_pci_reset(DeviceState *d)
 {
     VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
     virtio_pci_stop_ioeventfd(proxy);
@@ -1313,6 +1313,51 @@ static const TypeInfo virtio_scsi_info = {
     .class_init    = virtio_scsi_class_init,
 };
 
+#ifdef CONFIG_VIRTFS
+static int virtio_9p_init_pci(PCIDevice *pci_dev)
+{
+    VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
+    VirtIODevice *vdev;
+
+    vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf);
+    vdev->nvectors = proxy->nvectors;
+    virtio_init_pci(proxy, vdev);
+    /* make the actual value visible */
+    proxy->nvectors = vdev->nvectors;
+    return 0;
+}
+
+static Property virtio_9p_properties[] = {
+    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
+    DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
+    DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_9p_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+    k->init = virtio_9p_init_pci;
+    k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+    k->device_id = PCI_DEVICE_ID_VIRTIO_9P;
+    k->revision = VIRTIO_PCI_ABI_VERSION;
+    k->class_id = 0x2;
+    dc->props = virtio_9p_properties;
+    dc->reset = virtio_pci_reset;
+}
+
+static const TypeInfo virtio_9p_info = {
+    .name          = "virtio-9p-pci",
+    .parent        = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(VirtIOPCIProxy),
+    .class_init    = virtio_9p_class_init,
+};
+#endif
+
 /*
  * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
  */
@@ -1475,6 +1520,9 @@ static void virtio_pci_register_types(void)
     type_register_static(&virtio_rng_info);
     type_register_static(&virtio_pci_bus_info);
     type_register_static(&virtio_pci_info);
+#ifdef CONFIG_VIRTFS
+    type_register_static(&virtio_9p_info);
+#endif
 }
 
 type_init(virtio_pci_register_types)

hw/virtio-pci.h

@@ -22,6 +22,7 @@
 #include "virtio-serial.h"
 #include "virtio-scsi.h"
 #include "virtio-bus.h"
+#include "9pfs/virtio-9p-device.h"
 
 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
 
@@ -90,7 +91,6 @@ struct VirtIOPCIProxy {
 };
 
 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
-void virtio_pci_reset(DeviceState *d);
 void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
 
 /* Virtio ABI version, if we increment this, we break the guest driver. */

hw/virtio.h

@@ -20,7 +20,7 @@
 #include "sysemu/sysemu.h"
 #include "qemu/event_notifier.h"
 #ifdef CONFIG_VIRTFS
-#include "9p.h"
+#include "9pfs/virtio-9p-device.h"
 #endif
 
 /* from Linux's linux/virtio_config.h */