@@ -12,7 +12,7 @@
#include "hw/hw.h"
#include "hw/9pfs/9p.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "hw/9pfs/xen-9pfs.h"
#include "qapi/error.h"
#include "qemu/config-file.h"
@@ -45,7 +45,7 @@ typedef struct Xen9pfsRing {
} Xen9pfsRing;
typedef struct Xen9pfsDev {
- struct XenDevice xendev; /* must be first */
+ struct XenLegacyDevice xendev; /* must be first */
V9fsState state;
char *path;
char *security_model;
@@ -56,7 +56,7 @@ typedef struct Xen9pfsDev {
Xen9pfsRing *rings;
} Xen9pfsDev;
-static void xen_9pfs_disconnect(struct XenDevice *xendev);
+static void xen_9pfs_disconnect(struct XenLegacyDevice *xendev);
static void xen_9pfs_in_sg(Xen9pfsRing *ring,
struct iovec *in_sg,
@@ -243,7 +243,7 @@ static const V9fsTransport xen_9p_transport = {
.push_and_notify = xen_9pfs_push_and_notify,
};
-static int xen_9pfs_init(struct XenDevice *xendev)
+static int xen_9pfs_init(struct XenLegacyDevice *xendev)
{
return 0;
}
@@ -305,7 +305,7 @@ static void xen_9pfs_evtchn_event(void *opaque)
qemu_bh_schedule(ring->bh);
}
-static void xen_9pfs_disconnect(struct XenDevice *xendev)
+static void xen_9pfs_disconnect(struct XenLegacyDevice *xendev)
{
Xen9pfsDev *xen_9pdev = container_of(xendev, Xen9pfsDev, xendev);
int i;
@@ -321,7 +321,7 @@ static void xen_9pfs_disconnect(struct XenDevice *xendev)
}
}
-static int xen_9pfs_free(struct XenDevice *xendev)
+static int xen_9pfs_free(struct XenLegacyDevice *xendev)
{
Xen9pfsDev *xen_9pdev = container_of(xendev, Xen9pfsDev, xendev);
int i;
@@ -354,7 +354,7 @@ static int xen_9pfs_free(struct XenDevice *xendev)
return 0;
}
-static int xen_9pfs_connect(struct XenDevice *xendev)
+static int xen_9pfs_connect(struct XenLegacyDevice *xendev)
{
Error *err = NULL;
int i;
@@ -467,7 +467,7 @@ out:
return -1;
}
-static void xen_9pfs_alloc(struct XenDevice *xendev)
+static void xen_9pfs_alloc(struct XenLegacyDevice *xendev)
{
xenstore_write_be_str(xendev, "versions", VERSIONS);
xenstore_write_be_int(xendev, "max-rings", MAX_RINGS);
@@ -25,7 +25,7 @@
#include <sys/uio.h>
#include "hw/hw.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "xen_blkif.h"
#include "sysemu/blockdev.h"
#include "sysemu/iothread.h"
@@ -63,7 +63,7 @@ struct ioreq {
#define MAX_RING_PAGE_ORDER 4
struct XenBlkDev {
- struct XenDevice xendev; /* must be first */
+ struct XenLegacyDevice xendev; /* must be first */
char *params;
char *mode;
char *type;
@@ -179,7 +179,7 @@ static void ioreq_release(struct ioreq *ioreq, bool finish)
static int ioreq_parse(struct ioreq *ioreq)
{
struct XenBlkDev *blkdev = ioreq->blkdev;
- struct XenDevice *xendev = &blkdev->xendev;
+ struct XenLegacyDevice *xendev = &blkdev->xendev;
size_t len;
int i;
@@ -243,7 +243,7 @@ err:
static int ioreq_grant_copy(struct ioreq *ioreq)
{
struct XenBlkDev *blkdev = ioreq->blkdev;
- struct XenDevice *xendev = &blkdev->xendev;
+ struct XenLegacyDevice *xendev = &blkdev->xendev;
XenGrantCopySegment segs[BLKIF_MAX_SEGMENTS_PER_REQUEST];
int i, count, rc;
int64_t file_blk = blkdev->file_blk;
@@ -289,7 +289,7 @@ static void qemu_aio_complete(void *opaque, int ret)
{
struct ioreq *ioreq = opaque;
struct XenBlkDev *blkdev = ioreq->blkdev;
- struct XenDevice *xendev = &blkdev->xendev;
+ struct XenLegacyDevice *xendev = &blkdev->xendev;
aio_context_acquire(blkdev->ctx);
@@ -608,7 +608,7 @@ static void blk_bh(void *opaque)
aio_context_release(blkdev->ctx);
}
-static void blk_alloc(struct XenDevice *xendev)
+static void blk_alloc(struct XenLegacyDevice *xendev)
{
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
Error *err = NULL;
@@ -628,7 +628,7 @@ static void blk_alloc(struct XenDevice *xendev)
static void blk_parse_discard(struct XenBlkDev *blkdev)
{
- struct XenDevice *xendev = &blkdev->xendev;
+ struct XenLegacyDevice *xendev = &blkdev->xendev;
int enable;
blkdev->feature_discard = true;
@@ -642,7 +642,7 @@ static void blk_parse_discard(struct XenBlkDev *blkdev)
}
}
-static int blk_init(struct XenDevice *xendev)
+static int blk_init(struct XenLegacyDevice *xendev)
{
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
int info = 0;
@@ -737,7 +737,7 @@ out_error:
return -1;
}
-static int blk_connect(struct XenDevice *xendev)
+static int blk_connect(struct XenLegacyDevice *xendev)
{
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
int index, qflags;
@@ -941,7 +941,7 @@ static int blk_connect(struct XenDevice *xendev)
return 0;
}
-static void blk_disconnect(struct XenDevice *xendev)
+static void blk_disconnect(struct XenLegacyDevice *xendev)
{
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
@@ -966,7 +966,7 @@ static void blk_disconnect(struct XenDevice *xendev)
}
}
-static int blk_free(struct XenDevice *xendev)
+static int blk_free(struct XenLegacyDevice *xendev)
{
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
struct ioreq *ioreq;
@@ -992,7 +992,7 @@ static int blk_free(struct XenDevice *xendev)
return 0;
}
-static void blk_event(struct XenDevice *xendev)
+static void blk_event(struct XenLegacyDevice *xendev)
{
struct XenBlkDev *blkdev = container_of(xendev, struct XenBlkDev, xendev);
@@ -26,7 +26,7 @@
#include "qapi/error.h"
#include "hw/hw.h"
#include "chardev/char-fe.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include <xen/io/console.h>
@@ -39,7 +39,7 @@ struct buffer {
};
struct XenConsole {
- struct XenDevice xendev; /* must be first */
+ struct XenLegacyDevice xendev; /* must be first */
struct buffer buffer;
char console[XEN_BUFSIZE];
int ring_ref;
@@ -173,7 +173,7 @@ static void xencons_send(struct XenConsole *con)
/* -------------------------------------------------------------------- */
-static int con_init(struct XenDevice *xendev)
+static int con_init(struct XenLegacyDevice *xendev)
{
struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
char *type, *dom, label[32];
@@ -222,7 +222,7 @@ out:
return ret;
}
-static int con_initialise(struct XenDevice *xendev)
+static int con_initialise(struct XenLegacyDevice *xendev)
{
struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
int limit;
@@ -259,7 +259,7 @@ static int con_initialise(struct XenDevice *xendev)
return 0;
}
-static void con_disconnect(struct XenDevice *xendev)
+static void con_disconnect(struct XenLegacyDevice *xendev)
{
struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
@@ -276,7 +276,7 @@ static void con_disconnect(struct XenDevice *xendev)
}
}
-static void con_event(struct XenDevice *xendev)
+static void con_event(struct XenLegacyDevice *xendev)
{
struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
@@ -30,7 +30,7 @@
#include "hw/hw.h"
#include "ui/input.h"
#include "ui/console.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include <xen/event_channel.h>
#include <xen/io/fbif.h>
@@ -46,7 +46,7 @@
/* -------------------------------------------------------------------- */
struct common {
- struct XenDevice xendev; /* must be first */
+ struct XenLegacyDevice xendev; /* must be first */
void *page;
};
@@ -342,14 +342,14 @@ static QemuInputHandler xenfb_rel_mouse = {
.sync = xenfb_mouse_sync,
};
-static int input_init(struct XenDevice *xendev)
+static int input_init(struct XenLegacyDevice *xendev)
{
xenstore_write_be_int(xendev, "feature-abs-pointer", 1);
xenstore_write_be_int(xendev, "feature-raw-pointer", 1);
return 0;
}
-static int input_initialise(struct XenDevice *xendev)
+static int input_initialise(struct XenLegacyDevice *xendev)
{
struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
int rc;
@@ -361,7 +361,7 @@ static int input_initialise(struct XenDevice *xendev)
return 0;
}
-static void input_connected(struct XenDevice *xendev)
+static void input_connected(struct XenLegacyDevice *xendev)
{
struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
@@ -395,7 +395,7 @@ static void input_connected(struct XenDevice *xendev)
}
}
-static void input_disconnect(struct XenDevice *xendev)
+static void input_disconnect(struct XenLegacyDevice *xendev)
{
struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
@@ -410,7 +410,7 @@ static void input_disconnect(struct XenDevice *xendev)
common_unbind(&in->c);
}
-static void input_event(struct XenDevice *xendev)
+static void input_event(struct XenLegacyDevice *xendev)
{
struct XenInput *xenfb = container_of(xendev, struct XenInput, c.xendev);
struct xenkbd_page *page = xenfb->c.page;
@@ -867,7 +867,7 @@ static void xenfb_handle_events(struct XenFB *xenfb)
page->out_cons = cons;
}
-static int fb_init(struct XenDevice *xendev)
+static int fb_init(struct XenLegacyDevice *xendev)
{
#ifdef XENFB_TYPE_RESIZE
xenstore_write_be_int(xendev, "feature-resize", 1);
@@ -875,7 +875,7 @@ static int fb_init(struct XenDevice *xendev)
return 0;
}
-static int fb_initialise(struct XenDevice *xendev)
+static int fb_initialise(struct XenLegacyDevice *xendev)
{
struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
struct xenfb_page *fb_page;
@@ -912,7 +912,7 @@ static int fb_initialise(struct XenDevice *xendev)
return 0;
}
-static void fb_disconnect(struct XenDevice *xendev)
+static void fb_disconnect(struct XenLegacyDevice *xendev)
{
struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
@@ -935,7 +935,8 @@ static void fb_disconnect(struct XenDevice *xendev)
fb->bug_trigger = 0;
}
-static void fb_frontend_changed(struct XenDevice *xendev, const char *node)
+static void fb_frontend_changed(struct XenLegacyDevice *xendev,
+ const char *node)
{
struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
@@ -953,7 +954,7 @@ static void fb_frontend_changed(struct XenDevice *xendev, const char *node)
}
}
-static void fb_event(struct XenDevice *xendev)
+static void fb_event(struct XenLegacyDevice *xendev)
{
struct XenFB *xenfb = container_of(xendev, struct XenFB, c.xendev);
@@ -16,7 +16,7 @@
#include "hw/i386/pc.h"
#include "hw/i386/apic-msidef.h"
#include "hw/xen/xen_common.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-misc.h"
#include "qemu/error-report.h"
@@ -14,7 +14,7 @@
#include <sys/resource.h>
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "qemu/bitmap.h"
#include <xen/hvm/params.h>
@@ -30,7 +30,7 @@
#include "hw/pci/pci.h"
#include "hw/irq.h"
#include "hw/xen/xen_common.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "trace.h"
#include "exec/address-spaces.h"
#include "sysemu/block-backend.h"
@@ -28,14 +28,14 @@
#include "net/net.h"
#include "net/checksum.h"
#include "net/util.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include <xen/io/netif.h>
/* ------------------------------------------------------------- */
struct XenNetDev {
- struct XenDevice xendev; /* must be first */
+ struct XenLegacyDevice xendev; /* must be first */
char *mac;
int tx_work;
int tx_ring_ref;
@@ -276,7 +276,7 @@ static NetClientInfo net_xen_info = {
.receive = net_rx_packet,
};
-static int net_init(struct XenDevice *xendev)
+static int net_init(struct XenLegacyDevice *xendev)
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
@@ -308,7 +308,7 @@ static int net_init(struct XenDevice *xendev)
return 0;
}
-static int net_connect(struct XenDevice *xendev)
+static int net_connect(struct XenLegacyDevice *xendev)
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
int rx_copy;
@@ -363,7 +363,7 @@ static int net_connect(struct XenDevice *xendev)
return 0;
}
-static void net_disconnect(struct XenDevice *xendev)
+static void net_disconnect(struct XenLegacyDevice *xendev)
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
@@ -379,14 +379,14 @@ static void net_disconnect(struct XenDevice *xendev)
}
}
-static void net_event(struct XenDevice *xendev)
+static void net_event(struct XenLegacyDevice *xendev)
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
net_tx_packets(netdev);
qemu_flush_queued_packets(qemu_get_queue(netdev->nic));
}
-static int net_free(struct XenDevice *xendev)
+static int net_free(struct XenLegacyDevice *xendev)
{
struct XenNetDev *netdev = container_of(xendev, struct XenNetDev, xendev);
@@ -27,7 +27,7 @@
#include "qemu/option.h"
#include "hw/sysbus.h"
#include "hw/usb.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "monitor/qdev.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qstring.h"
@@ -99,7 +99,7 @@ struct usbback_hotplug {
};
struct usbback_info {
- struct XenDevice xendev; /* must be first */
+ struct XenLegacyDevice xendev; /* must be first */
USBBus bus;
void *urb_sring;
void *conn_sring;
@@ -142,7 +142,7 @@ static int usbback_gnttab_map(struct usbback_req *usbback_req)
unsigned int nr_segs, i, prot;
uint32_t ref[USBIF_MAX_SEGMENTS_PER_REQUEST];
struct usbback_info *usbif = usbback_req->usbif;
- struct XenDevice *xendev = &usbif->xendev;
+ struct XenLegacyDevice *xendev = &usbif->xendev;
struct usbif_request_segment *seg;
void *addr;
@@ -220,7 +220,7 @@ static int usbback_gnttab_map(struct usbback_req *usbback_req)
static int usbback_init_packet(struct usbback_req *usbback_req)
{
- struct XenDevice *xendev = &usbback_req->usbif->xendev;
+ struct XenLegacyDevice *xendev = &usbback_req->usbif->xendev;
USBPacket *packet = &usbback_req->packet;
USBDevice *dev = usbback_req->stub->dev;
USBEndpoint *ep;
@@ -279,7 +279,7 @@ static void usbback_do_response(struct usbback_req *usbback_req, int32_t status,
{
struct usbback_info *usbif;
struct usbif_urb_response *res;
- struct XenDevice *xendev;
+ struct XenLegacyDevice *xendev;
unsigned int notify;
usbif = usbback_req->usbif;
@@ -824,7 +824,7 @@ static void usbback_process_port(struct usbback_info *usbif, unsigned port)
g_free(busid);
}
-static void usbback_disconnect(struct XenDevice *xendev)
+static void usbback_disconnect(struct XenLegacyDevice *xendev)
{
struct usbback_info *usbif;
unsigned int i;
@@ -853,7 +853,7 @@ static void usbback_disconnect(struct XenDevice *xendev)
TR_BUS(xendev, "finished\n");
}
-static int usbback_connect(struct XenDevice *xendev)
+static int usbback_connect(struct XenLegacyDevice *xendev)
{
struct usbback_info *usbif;
struct usbif_urb_sring *urb_sring;
@@ -909,7 +909,8 @@ static int usbback_connect(struct XenDevice *xendev)
return 0;
}
-static void usbback_backend_changed(struct XenDevice *xendev, const char *node)
+static void usbback_backend_changed(struct XenLegacyDevice *xendev,
+ const char *node)
{
struct usbback_info *usbif;
unsigned int i;
@@ -922,7 +923,7 @@ static void usbback_backend_changed(struct XenDevice *xendev, const char *node)
}
}
-static int usbback_init(struct XenDevice *xendev)
+static int usbback_init(struct XenLegacyDevice *xendev)
{
struct usbback_info *usbif;
@@ -1001,7 +1002,7 @@ static USBPortOps xen_usb_port_ops = {
static USBBusOps xen_usb_bus_ops = {
};
-static void usbback_alloc(struct XenDevice *xendev)
+static void usbback_alloc(struct XenLegacyDevice *xendev)
{
struct usbback_info *usbif;
USBPort *p;
@@ -1027,7 +1028,7 @@ static void usbback_alloc(struct XenDevice *xendev)
xen_be_set_max_grant_refs(xendev, max_grants);
}
-static int usbback_free(struct XenDevice *xendev)
+static int usbback_free(struct XenLegacyDevice *xendev)
{
struct usbback_info *usbif;
struct usbback_req *usbback_req;
@@ -1066,7 +1067,7 @@ static int usbback_free(struct XenDevice *xendev)
return 0;
}
-static void usbback_event(struct XenDevice *xendev)
+static void usbback_event(struct XenLegacyDevice *xendev)
{
struct usbback_info *usbif;
@@ -1,5 +1,5 @@
# xen backend driver support
-common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o xen_pvdev.o xen-common.o
+common-obj-$(CONFIG_XEN) += xen-legacy-backend.o xen_devconfig.o xen_pvdev.o xen-common.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen-host-pci-device.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o xen_pt_graphics.o xen_pt_msi.o
@@ -10,7 +10,7 @@
#include "qemu/osdep.h"
#include "qemu/error-report.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "chardev/char.h"
#include "sysemu/accel.h"
#include "migration/misc.h"
new file mode 100644
@@ -0,0 +1,854 @@
+/*
+ * xen backend driver infrastructure
+ * (c) 2008 Gerd Hoffmann <kraxel@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; under version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+/*
+ * TODO: add some xenbus / xenstore concepts overview here.
+ */
+
+#include "qemu/osdep.h"
+#include <sys/signal.h>
+
+#include "hw/hw.h"
+#include "hw/sysbus.h"
+#include "hw/boards.h"
+#include "qemu/log.h"
+#include "qapi/error.h"
+#include "hw/xen/xen-legacy-backend.h"
+#include "hw/xen/xen_pvdev.h"
+#include "monitor/qdev.h"
+
+#include <xen/grant_table.h>
+
+DeviceState *xen_sysdev;
+BusState *xen_sysbus;
+
+/* ------------------------------------------------------------- */
+
+/* public */
+struct xs_handle *xenstore;
+const char *xen_protocol;
+
+/* private */
+static bool xen_feature_grant_copy;
+static int debug;
+
+int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
+ const char *val)
+{
+ return xenstore_write_str(xendev->be, node, val);
+}
+
+int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
+ int ival)
+{
+ return xenstore_write_int(xendev->be, node, ival);
+}
+
+int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
+ int64_t ival)
+{
+ return xenstore_write_int64(xendev->be, node, ival);
+}
+
+char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node)
+{
+ return xenstore_read_str(xendev->be, node);
+}
+
+int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
+ int *ival)
+{
+ return xenstore_read_int(xendev->be, node, ival);
+}
+
+char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node)
+{
+ return xenstore_read_str(xendev->fe, node);
+}
+
+int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
+ int *ival)
+{
+ return xenstore_read_int(xendev->fe, node, ival);
+}
+
+int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
+ uint64_t *uval)
+{
+ return xenstore_read_uint64(xendev->fe, node, uval);
+}
+
+/* ------------------------------------------------------------- */
+
+int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state)
+{
+ int rc;
+
+ rc = xenstore_write_be_int(xendev, "state", state);
+ if (rc < 0) {
+ return rc;
+ }
+ xen_pv_printf(xendev, 1, "backend state: %s -> %s\n",
+ xenbus_strstate(xendev->be_state), xenbus_strstate(state));
+ xendev->be_state = state;
+ return 0;
+}
+
+void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
+ unsigned int nr_refs)
+{
+ assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
+
+ if (xengnttab_set_max_grants(xendev->gnttabdev, nr_refs)) {
+ xen_pv_printf(xendev, 0, "xengnttab_set_max_grants failed: %s\n",
+ strerror(errno));
+ }
+}
+
+void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
+ unsigned int nr_refs, int prot)
+{
+ void *ptr;
+
+ assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
+
+ ptr = xengnttab_map_domain_grant_refs(xendev->gnttabdev, nr_refs,
+ xen_domid, refs, prot);
+ if (!ptr) {
+ xen_pv_printf(xendev, 0,
+ "xengnttab_map_domain_grant_refs failed: %s\n",
+ strerror(errno));
+ }
+
+ return ptr;
+}
+
+void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
+ unsigned int nr_refs)
+{
+ assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
+
+ if (xengnttab_unmap(xendev->gnttabdev, ptr, nr_refs)) {
+ xen_pv_printf(xendev, 0, "xengnttab_unmap failed: %s\n",
+ strerror(errno));
+ }
+}
+
+static int compat_copy_grant_refs(struct XenLegacyDevice *xendev,
+ bool to_domain,
+ XenGrantCopySegment segs[],
+ unsigned int nr_segs)
+{
+ uint32_t *refs = g_new(uint32_t, nr_segs);
+ int prot = to_domain ? PROT_WRITE : PROT_READ;
+ void *pages;
+ unsigned int i;
+
+ for (i = 0; i < nr_segs; i++) {
+ XenGrantCopySegment *seg = &segs[i];
+
+ refs[i] = to_domain ?
+ seg->dest.foreign.ref : seg->source.foreign.ref;
+ }
+
+ pages = xengnttab_map_domain_grant_refs(xendev->gnttabdev, nr_segs,
+ xen_domid, refs, prot);
+ if (!pages) {
+ xen_pv_printf(xendev, 0,
+ "xengnttab_map_domain_grant_refs failed: %s\n",
+ strerror(errno));
+ g_free(refs);
+ return -1;
+ }
+
+ for (i = 0; i < nr_segs; i++) {
+ XenGrantCopySegment *seg = &segs[i];
+ void *page = pages + (i * XC_PAGE_SIZE);
+
+ if (to_domain) {
+ memcpy(page + seg->dest.foreign.offset, seg->source.virt,
+ seg->len);
+ } else {
+ memcpy(seg->dest.virt, page + seg->source.foreign.offset,
+ seg->len);
+ }
+ }
+
+ if (xengnttab_unmap(xendev->gnttabdev, pages, nr_segs)) {
+ xen_pv_printf(xendev, 0, "xengnttab_unmap failed: %s\n",
+ strerror(errno));
+ }
+
+ g_free(refs);
+ return 0;
+}
+
+int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev,
+ bool to_domain,
+ XenGrantCopySegment segs[],
+ unsigned int nr_segs)
+{
+ xengnttab_grant_copy_segment_t *xengnttab_segs;
+ unsigned int i;
+ int rc;
+
+ assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
+
+ if (!xen_feature_grant_copy) {
+ return compat_copy_grant_refs(xendev, to_domain, segs, nr_segs);
+ }
+
+ xengnttab_segs = g_new0(xengnttab_grant_copy_segment_t, nr_segs);
+
+ for (i = 0; i < nr_segs; i++) {
+ XenGrantCopySegment *seg = &segs[i];
+ xengnttab_grant_copy_segment_t *xengnttab_seg = &xengnttab_segs[i];
+
+ if (to_domain) {
+ xengnttab_seg->flags = GNTCOPY_dest_gref;
+ xengnttab_seg->dest.foreign.domid = xen_domid;
+ xengnttab_seg->dest.foreign.ref = seg->dest.foreign.ref;
+ xengnttab_seg->dest.foreign.offset = seg->dest.foreign.offset;
+ xengnttab_seg->source.virt = seg->source.virt;
+ } else {
+ xengnttab_seg->flags = GNTCOPY_source_gref;
+ xengnttab_seg->source.foreign.domid = xen_domid;
+ xengnttab_seg->source.foreign.ref = seg->source.foreign.ref;
+ xengnttab_seg->source.foreign.offset =
+ seg->source.foreign.offset;
+ xengnttab_seg->dest.virt = seg->dest.virt;
+ }
+
+ xengnttab_seg->len = seg->len;
+ }
+
+ rc = xengnttab_grant_copy(xendev->gnttabdev, nr_segs, xengnttab_segs);
+
+ if (rc) {
+ xen_pv_printf(xendev, 0, "xengnttab_copy failed: %s\n",
+ strerror(errno));
+ }
+
+ for (i = 0; i < nr_segs; i++) {
+ xengnttab_grant_copy_segment_t *xengnttab_seg =
+ &xengnttab_segs[i];
+
+ if (xengnttab_seg->status != GNTST_okay) {
+ xen_pv_printf(xendev, 0, "segment[%u] status: %d\n", i,
+ xengnttab_seg->status);
+ rc = -1;
+ }
+ }
+
+ g_free(xengnttab_segs);
+ return rc;
+}
+
+/*
+ * get xen backend device, allocate a new one if it doesn't exist.
+ */
+static struct XenLegacyDevice *xen_be_get_xendev(const char *type, int dom,
+ int dev,
+ struct XenDevOps *ops)
+{
+ struct XenLegacyDevice *xendev;
+
+ xendev = xen_pv_find_xendev(type, dom, dev);
+ if (xendev) {
+ return xendev;
+ }
+
+ /* init new xendev */
+ xendev = g_malloc0(ops->size);
+ object_initialize(&xendev->qdev, ops->size, TYPE_XENBACKEND);
+ OBJECT(xendev)->free = g_free;
+ qdev_set_parent_bus(DEVICE(xendev), xen_sysbus);
+ qdev_set_id(DEVICE(xendev), g_strdup_printf("xen-%s-%d", type, dev));
+ qdev_init_nofail(DEVICE(xendev));
+ object_unref(OBJECT(xendev));
+
+ xendev->type = type;
+ xendev->dom = dom;
+ xendev->dev = dev;
+ xendev->ops = ops;
+
+ snprintf(xendev->be, sizeof(xendev->be), "backend/%s/%d/%d",
+ xendev->type, xendev->dom, xendev->dev);
+ snprintf(xendev->name, sizeof(xendev->name), "%s-%d",
+ xendev->type, xendev->dev);
+
+ xendev->debug = debug;
+ xendev->local_port = -1;
+
+ xendev->evtchndev = xenevtchn_open(NULL, 0);
+ if (xendev->evtchndev == NULL) {
+ xen_pv_printf(NULL, 0, "can't open evtchn device\n");
+ qdev_unplug(DEVICE(xendev), NULL);
+ return NULL;
+ }
+ qemu_set_cloexec(xenevtchn_fd(xendev->evtchndev));
+
+ xen_pv_insert_xendev(xendev);
+
+ if (xendev->ops->alloc) {
+ xendev->ops->alloc(xendev);
+ }
+
+ return xendev;
+}
+
+
+/*
+ * Sync internal data structures on xenstore updates.
+ * Node specifies the changed field. node = NULL means
+ * update all fields (used for initialization).
+ */
+static void xen_be_backend_changed(struct XenLegacyDevice *xendev,
+ const char *node)
+{
+ if (node == NULL || strcmp(node, "online") == 0) {
+ if (xenstore_read_be_int(xendev, "online", &xendev->online) == -1) {
+ xendev->online = 0;
+ }
+ }
+
+ if (node) {
+ xen_pv_printf(xendev, 2, "backend update: %s\n", node);
+ if (xendev->ops->backend_changed) {
+ xendev->ops->backend_changed(xendev, node);
+ }
+ }
+}
+
+static void xen_be_frontend_changed(struct XenLegacyDevice *xendev,
+ const char *node)
+{
+ int fe_state;
+
+ if (node == NULL || strcmp(node, "state") == 0) {
+ if (xenstore_read_fe_int(xendev, "state", &fe_state) == -1) {
+ fe_state = XenbusStateUnknown;
+ }
+ if (xendev->fe_state != fe_state) {
+ xen_pv_printf(xendev, 1, "frontend state: %s -> %s\n",
+ xenbus_strstate(xendev->fe_state),
+ xenbus_strstate(fe_state));
+ }
+ xendev->fe_state = fe_state;
+ }
+ if (node == NULL || strcmp(node, "protocol") == 0) {
+ g_free(xendev->protocol);
+ xendev->protocol = xenstore_read_fe_str(xendev, "protocol");
+ if (xendev->protocol) {
+ xen_pv_printf(xendev, 1, "frontend protocol: %s\n",
+ xendev->protocol);
+ }
+ }
+
+ if (node) {
+ xen_pv_printf(xendev, 2, "frontend update: %s\n", node);
+ if (xendev->ops->frontend_changed) {
+ xendev->ops->frontend_changed(xendev, node);
+ }
+ }
+}
+
+/* ------------------------------------------------------------- */
+/* Check for possible state transitions and perform them. */
+
+/*
+ * Initial xendev setup. Read frontend path, register watch for it.
+ * Should succeed once xend finished setting up the backend device.
+ *
+ * Also sets initial state (-> Initializing) when done. Which
+ * only affects the xendev->be_state variable as xenbus should
+ * already be put into that state by xend.
+ */
+static int xen_be_try_setup(struct XenLegacyDevice *xendev)
+{
+ char token[XEN_BUFSIZE];
+ int be_state;
+
+ if (xenstore_read_be_int(xendev, "state", &be_state) == -1) {
+ xen_pv_printf(xendev, 0, "reading backend state failed\n");
+ return -1;
+ }
+
+ if (be_state != XenbusStateInitialising) {
+ xen_pv_printf(xendev, 0, "initial backend state is wrong (%s)\n",
+ xenbus_strstate(be_state));
+ return -1;
+ }
+
+ xendev->fe = xenstore_read_be_str(xendev, "frontend");
+ if (xendev->fe == NULL) {
+ xen_pv_printf(xendev, 0, "reading frontend path failed\n");
+ return -1;
+ }
+
+ /* setup frontend watch */
+ snprintf(token, sizeof(token), "fe:%p", xendev);
+ if (!xs_watch(xenstore, xendev->fe, token)) {
+ xen_pv_printf(xendev, 0, "watching frontend path (%s) failed\n",
+ xendev->fe);
+ return -1;
+ }
+ xen_be_set_state(xendev, XenbusStateInitialising);
+
+ xen_be_backend_changed(xendev, NULL);
+ xen_be_frontend_changed(xendev, NULL);
+ return 0;
+}
+
+/*
+ * Try initialize xendev. Prepare everything the backend can do
+ * without synchronizing with the frontend. Fakes hotplug-status. No
+ * hotplug involved here because this is about userspace drivers, thus
+ * there are kernel backend devices which could invoke hotplug.
+ *
+ * Goes to InitWait on success.
+ */
+static int xen_be_try_init(struct XenLegacyDevice *xendev)
+{
+ int rc = 0;
+
+ if (!xendev->online) {
+ xen_pv_printf(xendev, 1, "not online\n");
+ return -1;
+ }
+
+ if (xendev->ops->init) {
+ rc = xendev->ops->init(xendev);
+ }
+ if (rc != 0) {
+ xen_pv_printf(xendev, 1, "init() failed\n");
+ return rc;
+ }
+
+ xenstore_write_be_str(xendev, "hotplug-status", "connected");
+ xen_be_set_state(xendev, XenbusStateInitWait);
+ return 0;
+}
+
+/*
+ * Try to initialise xendev. Depends on the frontend being ready
+ * for it (shared ring and evtchn info in xenstore, state being
+ * Initialised or Connected).
+ *
+ * Goes to Connected on success.
+ */
+static int xen_be_try_initialise(struct XenLegacyDevice *xendev)
+{
+ int rc = 0;
+
+ if (xendev->fe_state != XenbusStateInitialised &&
+ xendev->fe_state != XenbusStateConnected) {
+ if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
+ xen_pv_printf(xendev, 2, "frontend not ready, ignoring\n");
+ } else {
+ xen_pv_printf(xendev, 2, "frontend not ready (yet)\n");
+ return -1;
+ }
+ }
+
+ if (xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV) {
+ xendev->gnttabdev = xengnttab_open(NULL, 0);
+ if (xendev->gnttabdev == NULL) {
+ xen_pv_printf(NULL, 0, "can't open gnttab device\n");
+ return -1;
+ }
+ } else {
+ xendev->gnttabdev = NULL;
+ }
+
+ if (xendev->ops->initialise) {
+ rc = xendev->ops->initialise(xendev);
+ }
+ if (rc != 0) {
+ xen_pv_printf(xendev, 0, "initialise() failed\n");
+ return rc;
+ }
+
+ xen_be_set_state(xendev, XenbusStateConnected);
+ return 0;
+}
+
+/*
+ * Try to let xendev know that it is connected. Depends on the
+ * frontend being Connected. Note that this may be called more
+ * than once since the backend state is not modified.
+ */
+static void xen_be_try_connected(struct XenLegacyDevice *xendev)
+{
+ if (!xendev->ops->connected) {
+ return;
+ }
+
+ if (xendev->fe_state != XenbusStateConnected) {
+ if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
+ xen_pv_printf(xendev, 2, "frontend not ready, ignoring\n");
+ } else {
+ xen_pv_printf(xendev, 2, "frontend not ready (yet)\n");
+ return;
+ }
+ }
+
+ xendev->ops->connected(xendev);
+}
+
+/*
+ * Teardown connection.
+ *
+ * Goes to Closed when done.
+ */
+static void xen_be_disconnect(struct XenLegacyDevice *xendev,
+ enum xenbus_state state)
+{
+ if (xendev->be_state != XenbusStateClosing &&
+ xendev->be_state != XenbusStateClosed &&
+ xendev->ops->disconnect) {
+ xendev->ops->disconnect(xendev);
+ }
+ if (xendev->gnttabdev) {
+ xengnttab_close(xendev->gnttabdev);
+ xendev->gnttabdev = NULL;
+ }
+ if (xendev->be_state != state) {
+ xen_be_set_state(xendev, state);
+ }
+}
+
+/*
+ * Try to reset xendev, for reconnection by another frontend instance.
+ */
+static int xen_be_try_reset(struct XenLegacyDevice *xendev)
+{
+ if (xendev->fe_state != XenbusStateInitialising) {
+ return -1;
+ }
+
+ xen_pv_printf(xendev, 1, "device reset (for re-connect)\n");
+ xen_be_set_state(xendev, XenbusStateInitialising);
+ return 0;
+}
+
+/*
+ * state change dispatcher function
+ */
+void xen_be_check_state(struct XenLegacyDevice *xendev)
+{
+ int rc = 0;
+
+ /* frontend may request shutdown from almost anywhere */
+ if (xendev->fe_state == XenbusStateClosing ||
+ xendev->fe_state == XenbusStateClosed) {
+ xen_be_disconnect(xendev, xendev->fe_state);
+ return;
+ }
+
+ /* check for possible backend state transitions */
+ for (;;) {
+ switch (xendev->be_state) {
+ case XenbusStateUnknown:
+ rc = xen_be_try_setup(xendev);
+ break;
+ case XenbusStateInitialising:
+ rc = xen_be_try_init(xendev);
+ break;
+ case XenbusStateInitWait:
+ rc = xen_be_try_initialise(xendev);
+ break;
+ case XenbusStateConnected:
+ /* xendev->be_state doesn't change */
+ xen_be_try_connected(xendev);
+ rc = -1;
+ break;
+ case XenbusStateClosed:
+ rc = xen_be_try_reset(xendev);
+ break;
+ default:
+ rc = -1;
+ }
+ if (rc != 0) {
+ break;
+ }
+ }
+}
+
+/* ------------------------------------------------------------- */
+
+static int xenstore_scan(const char *type, int dom, struct XenDevOps *ops)
+{
+ struct XenLegacyDevice *xendev;
+ char path[XEN_BUFSIZE], token[XEN_BUFSIZE];
+ char **dev = NULL;
+ unsigned int cdev, j;
+
+ /* setup watch */
+ snprintf(token, sizeof(token), "be:%p:%d:%p", type, dom, ops);
+ snprintf(path, sizeof(path), "backend/%s/%d", type, dom);
+ if (!xs_watch(xenstore, path, token)) {
+ xen_pv_printf(NULL, 0, "xen be: watching backend path (%s) failed\n",
+ path);
+ return -1;
+ }
+
+ /* look for backends */
+ dev = xs_directory(xenstore, 0, path, &cdev);
+ if (!dev) {
+ return 0;
+ }
+ for (j = 0; j < cdev; j++) {
+ xendev = xen_be_get_xendev(type, dom, atoi(dev[j]), ops);
+ if (xendev == NULL) {
+ continue;
+ }
+ xen_be_check_state(xendev);
+ }
+ free(dev);
+ return 0;
+}
+
+void xenstore_update_be(char *watch, char *type, int dom,
+ struct XenDevOps *ops)
+{
+ struct XenLegacyDevice *xendev;
+ char path[XEN_BUFSIZE], *bepath;
+ unsigned int len, dev;
+
+ len = snprintf(path, sizeof(path), "backend/%s/%d", type, dom);
+ if (strncmp(path, watch, len) != 0) {
+ return;
+ }
+ if (sscanf(watch + len, "/%u/%255s", &dev, path) != 2) {
+ strcpy(path, "");
+ if (sscanf(watch + len, "/%u", &dev) != 1) {
+ dev = -1;
+ }
+ }
+ if (dev == -1) {
+ return;
+ }
+
+ xendev = xen_be_get_xendev(type, dom, dev, ops);
+ if (xendev != NULL) {
+ bepath = xs_read(xenstore, 0, xendev->be, &len);
+ if (bepath == NULL) {
+ xen_pv_del_xendev(xendev);
+ } else {
+ free(bepath);
+ xen_be_backend_changed(xendev, path);
+ xen_be_check_state(xendev);
+ }
+ }
+}
+
+void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev)
+{
+ char *node;
+ unsigned int len;
+
+ len = strlen(xendev->fe);
+ if (strncmp(xendev->fe, watch, len) != 0) {
+ return;
+ }
+ if (watch[len] != '/') {
+ return;
+ }
+ node = watch + len + 1;
+
+ xen_be_frontend_changed(xendev, node);
+ xen_be_check_state(xendev);
+}
+/* -------------------------------------------------------------------- */
+
+int xen_be_init(void)
+{
+ xengnttab_handle *gnttabdev;
+
+ xenstore = xs_daemon_open();
+ if (!xenstore) {
+ xen_pv_printf(NULL, 0, "can't connect to xenstored\n");
+ return -1;
+ }
+
+ qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL);
+
+ if (xen_xc == NULL || xen_fmem == NULL) {
+ /* Check if xen_init() have been called */
+ goto err;
+ }
+
+ gnttabdev = xengnttab_open(NULL, 0);
+ if (gnttabdev != NULL) {
+ if (xengnttab_grant_copy(gnttabdev, 0, NULL) == 0) {
+ xen_feature_grant_copy = true;
+ }
+ xengnttab_close(gnttabdev);
+ }
+
+ xen_sysdev = qdev_create(NULL, TYPE_XENSYSDEV);
+ qdev_init_nofail(xen_sysdev);
+ xen_sysbus = qbus_create(TYPE_XENSYSBUS, DEVICE(xen_sysdev), "xen-sysbus");
+ qbus_set_bus_hotplug_handler(xen_sysbus, &error_abort);
+
+ return 0;
+
+err:
+ qemu_set_fd_handler(xs_fileno(xenstore), NULL, NULL, NULL);
+ xs_daemon_close(xenstore);
+ xenstore = NULL;
+
+ return -1;
+}
+
+static void xen_set_dynamic_sysbus(void)
+{
+ Object *machine = qdev_get_machine();
+ ObjectClass *oc = object_get_class(machine);
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ machine_class_allow_dynamic_sysbus_dev(mc, TYPE_XENSYSDEV);
+}
+
+int xen_be_register(const char *type, struct XenDevOps *ops)
+{
+ char path[50];
+ int rc;
+
+ if (ops->backend_register) {
+ rc = ops->backend_register();
+ if (rc) {
+ return rc;
+ }
+ }
+
+ snprintf(path, sizeof(path), "device-model/%u/backends/%s", xen_domid,
+ type);
+ xenstore_mkdir(path, XS_PERM_NONE);
+
+ return xenstore_scan(type, xen_domid, ops);
+}
+
+void xen_be_register_common(void)
+{
+ xen_set_dynamic_sysbus();
+
+ xen_be_register("console", &xen_console_ops);
+ xen_be_register("vkbd", &xen_kbdmouse_ops);
+ xen_be_register("qdisk", &xen_blkdev_ops);
+#ifdef CONFIG_VIRTFS
+ xen_be_register("9pfs", &xen_9pfs_ops);
+#endif
+#ifdef CONFIG_USB_LIBUSB
+ xen_be_register("qusb", &xen_usb_ops);
+#endif
+}
+
+int xen_be_bind_evtchn(struct XenLegacyDevice *xendev)
+{
+ if (xendev->local_port != -1) {
+ return 0;
+ }
+ xendev->local_port = xenevtchn_bind_interdomain
+ (xendev->evtchndev, xendev->dom, xendev->remote_port);
+ if (xendev->local_port == -1) {
+ xen_pv_printf(xendev, 0, "xenevtchn_bind_interdomain failed\n");
+ return -1;
+ }
+ xen_pv_printf(xendev, 2, "bind evtchn port %d\n", xendev->local_port);
+ qemu_set_fd_handler(xenevtchn_fd(xendev->evtchndev),
+ xen_pv_evtchn_event, NULL, xendev);
+ return 0;
+}
+
+
+static Property xendev_properties[] = {
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void xendev_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->props = xendev_properties;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ /* xen-backend devices can be plugged/unplugged dynamically */
+ dc->user_creatable = true;
+}
+
+static const TypeInfo xendev_type_info = {
+ .name = TYPE_XENBACKEND,
+ .parent = TYPE_XENSYSDEV,
+ .class_init = xendev_class_init,
+ .instance_size = sizeof(struct XenLegacyDevice),
+};
+
+static void xen_sysbus_class_init(ObjectClass *klass, void *data)
+{
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+}
+
+static const TypeInfo xensysbus_info = {
+ .name = TYPE_XENSYSBUS,
+ .parent = TYPE_BUS,
+ .class_init = xen_sysbus_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
+static int xen_sysdev_init(SysBusDevice *dev)
+{
+ return 0;
+}
+
+static Property xen_sysdev_properties[] = {
+ {/* end of property list */},
+};
+
+static void xen_sysdev_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = xen_sysdev_init;
+ dc->props = xen_sysdev_properties;
+ dc->bus_type = TYPE_XENSYSBUS;
+}
+
+static const TypeInfo xensysdev_info = {
+ .name = TYPE_XENSYSDEV,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(SysBusDevice),
+ .class_init = xen_sysdev_class_init,
+};
+
+static void xenbe_register_types(void)
+{
+ type_register_static(&xensysbus_info);
+ type_register_static(&xensysdev_info);
+ type_register_static(&xendev_type_info);
+}
+
+type_init(xenbe_register_types)
deleted file mode 100644
@@ -1,845 +0,0 @@
-/*
- * xen backend driver infrastructure
- * (c) 2008 Gerd Hoffmann <kraxel@redhat.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; under version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-
-/*
- * TODO: add some xenbus / xenstore concepts overview here.
- */
-
-#include "qemu/osdep.h"
-#include <sys/signal.h>
-
-#include "hw/hw.h"
-#include "hw/sysbus.h"
-#include "hw/boards.h"
-#include "qemu/log.h"
-#include "qapi/error.h"
-#include "hw/xen/xen_backend.h"
-#include "hw/xen/xen_pvdev.h"
-#include "monitor/qdev.h"
-
-#include <xen/grant_table.h>
-
-DeviceState *xen_sysdev;
-BusState *xen_sysbus;
-
-/* ------------------------------------------------------------- */
-
-/* public */
-struct xs_handle *xenstore = NULL;
-const char *xen_protocol;
-
-/* private */
-static bool xen_feature_grant_copy;
-static int debug;
-
-int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val)
-{
- return xenstore_write_str(xendev->be, node, val);
-}
-
-int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival)
-{
- return xenstore_write_int(xendev->be, node, ival);
-}
-
-int xenstore_write_be_int64(struct XenDevice *xendev, const char *node, int64_t ival)
-{
- return xenstore_write_int64(xendev->be, node, ival);
-}
-
-char *xenstore_read_be_str(struct XenDevice *xendev, const char *node)
-{
- return xenstore_read_str(xendev->be, node);
-}
-
-int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival)
-{
- return xenstore_read_int(xendev->be, node, ival);
-}
-
-char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node)
-{
- return xenstore_read_str(xendev->fe, node);
-}
-
-int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival)
-{
- return xenstore_read_int(xendev->fe, node, ival);
-}
-
-int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node,
- uint64_t *uval)
-{
- return xenstore_read_uint64(xendev->fe, node, uval);
-}
-
-/* ------------------------------------------------------------- */
-
-int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state)
-{
- int rc;
-
- rc = xenstore_write_be_int(xendev, "state", state);
- if (rc < 0) {
- return rc;
- }
- xen_pv_printf(xendev, 1, "backend state: %s -> %s\n",
- xenbus_strstate(xendev->be_state), xenbus_strstate(state));
- xendev->be_state = state;
- return 0;
-}
-
-void xen_be_set_max_grant_refs(struct XenDevice *xendev,
- unsigned int nr_refs)
-{
- assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
-
- if (xengnttab_set_max_grants(xendev->gnttabdev, nr_refs)) {
- xen_pv_printf(xendev, 0, "xengnttab_set_max_grants failed: %s\n",
- strerror(errno));
- }
-}
-
-void *xen_be_map_grant_refs(struct XenDevice *xendev, uint32_t *refs,
- unsigned int nr_refs, int prot)
-{
- void *ptr;
-
- assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
-
- ptr = xengnttab_map_domain_grant_refs(xendev->gnttabdev, nr_refs,
- xen_domid, refs, prot);
- if (!ptr) {
- xen_pv_printf(xendev, 0,
- "xengnttab_map_domain_grant_refs failed: %s\n",
- strerror(errno));
- }
-
- return ptr;
-}
-
-void xen_be_unmap_grant_refs(struct XenDevice *xendev, void *ptr,
- unsigned int nr_refs)
-{
- assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
-
- if (xengnttab_unmap(xendev->gnttabdev, ptr, nr_refs)) {
- xen_pv_printf(xendev, 0, "xengnttab_unmap failed: %s\n",
- strerror(errno));
- }
-}
-
-static int compat_copy_grant_refs(struct XenDevice *xendev,
- bool to_domain,
- XenGrantCopySegment segs[],
- unsigned int nr_segs)
-{
- uint32_t *refs = g_new(uint32_t, nr_segs);
- int prot = to_domain ? PROT_WRITE : PROT_READ;
- void *pages;
- unsigned int i;
-
- for (i = 0; i < nr_segs; i++) {
- XenGrantCopySegment *seg = &segs[i];
-
- refs[i] = to_domain ?
- seg->dest.foreign.ref : seg->source.foreign.ref;
- }
-
- pages = xengnttab_map_domain_grant_refs(xendev->gnttabdev, nr_segs,
- xen_domid, refs, prot);
- if (!pages) {
- xen_pv_printf(xendev, 0,
- "xengnttab_map_domain_grant_refs failed: %s\n",
- strerror(errno));
- g_free(refs);
- return -1;
- }
-
- for (i = 0; i < nr_segs; i++) {
- XenGrantCopySegment *seg = &segs[i];
- void *page = pages + (i * XC_PAGE_SIZE);
-
- if (to_domain) {
- memcpy(page + seg->dest.foreign.offset, seg->source.virt,
- seg->len);
- } else {
- memcpy(seg->dest.virt, page + seg->source.foreign.offset,
- seg->len);
- }
- }
-
- if (xengnttab_unmap(xendev->gnttabdev, pages, nr_segs)) {
- xen_pv_printf(xendev, 0, "xengnttab_unmap failed: %s\n",
- strerror(errno));
- }
-
- g_free(refs);
- return 0;
-}
-
-int xen_be_copy_grant_refs(struct XenDevice *xendev,
- bool to_domain,
- XenGrantCopySegment segs[],
- unsigned int nr_segs)
-{
- xengnttab_grant_copy_segment_t *xengnttab_segs;
- unsigned int i;
- int rc;
-
- assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
-
- if (!xen_feature_grant_copy) {
- return compat_copy_grant_refs(xendev, to_domain, segs, nr_segs);
- }
-
- xengnttab_segs = g_new0(xengnttab_grant_copy_segment_t, nr_segs);
-
- for (i = 0; i < nr_segs; i++) {
- XenGrantCopySegment *seg = &segs[i];
- xengnttab_grant_copy_segment_t *xengnttab_seg = &xengnttab_segs[i];
-
- if (to_domain) {
- xengnttab_seg->flags = GNTCOPY_dest_gref;
- xengnttab_seg->dest.foreign.domid = xen_domid;
- xengnttab_seg->dest.foreign.ref = seg->dest.foreign.ref;
- xengnttab_seg->dest.foreign.offset = seg->dest.foreign.offset;
- xengnttab_seg->source.virt = seg->source.virt;
- } else {
- xengnttab_seg->flags = GNTCOPY_source_gref;
- xengnttab_seg->source.foreign.domid = xen_domid;
- xengnttab_seg->source.foreign.ref = seg->source.foreign.ref;
- xengnttab_seg->source.foreign.offset =
- seg->source.foreign.offset;
- xengnttab_seg->dest.virt = seg->dest.virt;
- }
-
- xengnttab_seg->len = seg->len;
- }
-
- rc = xengnttab_grant_copy(xendev->gnttabdev, nr_segs, xengnttab_segs);
-
- if (rc) {
- xen_pv_printf(xendev, 0, "xengnttab_copy failed: %s\n",
- strerror(errno));
- }
-
- for (i = 0; i < nr_segs; i++) {
- xengnttab_grant_copy_segment_t *xengnttab_seg =
- &xengnttab_segs[i];
-
- if (xengnttab_seg->status != GNTST_okay) {
- xen_pv_printf(xendev, 0, "segment[%u] status: %d\n", i,
- xengnttab_seg->status);
- rc = -1;
- }
- }
-
- g_free(xengnttab_segs);
- return rc;
-}
-
-/*
- * get xen backend device, allocate a new one if it doesn't exist.
- */
-static struct XenDevice *xen_be_get_xendev(const char *type, int dom, int dev,
- struct XenDevOps *ops)
-{
- struct XenDevice *xendev;
-
- xendev = xen_pv_find_xendev(type, dom, dev);
- if (xendev) {
- return xendev;
- }
-
- /* init new xendev */
- xendev = g_malloc0(ops->size);
- object_initialize(&xendev->qdev, ops->size, TYPE_XENBACKEND);
- OBJECT(xendev)->free = g_free;
- qdev_set_parent_bus(DEVICE(xendev), xen_sysbus);
- qdev_set_id(DEVICE(xendev), g_strdup_printf("xen-%s-%d", type, dev));
- qdev_init_nofail(DEVICE(xendev));
- object_unref(OBJECT(xendev));
-
- xendev->type = type;
- xendev->dom = dom;
- xendev->dev = dev;
- xendev->ops = ops;
-
- snprintf(xendev->be, sizeof(xendev->be), "backend/%s/%d/%d",
- xendev->type, xendev->dom, xendev->dev);
- snprintf(xendev->name, sizeof(xendev->name), "%s-%d",
- xendev->type, xendev->dev);
-
- xendev->debug = debug;
- xendev->local_port = -1;
-
- xendev->evtchndev = xenevtchn_open(NULL, 0);
- if (xendev->evtchndev == NULL) {
- xen_pv_printf(NULL, 0, "can't open evtchn device\n");
- qdev_unplug(DEVICE(xendev), NULL);
- return NULL;
- }
- qemu_set_cloexec(xenevtchn_fd(xendev->evtchndev));
-
- xen_pv_insert_xendev(xendev);
-
- if (xendev->ops->alloc) {
- xendev->ops->alloc(xendev);
- }
-
- return xendev;
-}
-
-
-/*
- * Sync internal data structures on xenstore updates.
- * Node specifies the changed field. node = NULL means
- * update all fields (used for initialization).
- */
-static void xen_be_backend_changed(struct XenDevice *xendev, const char *node)
-{
- if (node == NULL || strcmp(node, "online") == 0) {
- if (xenstore_read_be_int(xendev, "online", &xendev->online) == -1) {
- xendev->online = 0;
- }
- }
-
- if (node) {
- xen_pv_printf(xendev, 2, "backend update: %s\n", node);
- if (xendev->ops->backend_changed) {
- xendev->ops->backend_changed(xendev, node);
- }
- }
-}
-
-static void xen_be_frontend_changed(struct XenDevice *xendev, const char *node)
-{
- int fe_state;
-
- if (node == NULL || strcmp(node, "state") == 0) {
- if (xenstore_read_fe_int(xendev, "state", &fe_state) == -1) {
- fe_state = XenbusStateUnknown;
- }
- if (xendev->fe_state != fe_state) {
- xen_pv_printf(xendev, 1, "frontend state: %s -> %s\n",
- xenbus_strstate(xendev->fe_state),
- xenbus_strstate(fe_state));
- }
- xendev->fe_state = fe_state;
- }
- if (node == NULL || strcmp(node, "protocol") == 0) {
- g_free(xendev->protocol);
- xendev->protocol = xenstore_read_fe_str(xendev, "protocol");
- if (xendev->protocol) {
- xen_pv_printf(xendev, 1, "frontend protocol: %s\n",
- xendev->protocol);
- }
- }
-
- if (node) {
- xen_pv_printf(xendev, 2, "frontend update: %s\n", node);
- if (xendev->ops->frontend_changed) {
- xendev->ops->frontend_changed(xendev, node);
- }
- }
-}
-
-/* ------------------------------------------------------------- */
-/* Check for possible state transitions and perform them. */
-
-/*
- * Initial xendev setup. Read frontend path, register watch for it.
- * Should succeed once xend finished setting up the backend device.
- *
- * Also sets initial state (-> Initializing) when done. Which
- * only affects the xendev->be_state variable as xenbus should
- * already be put into that state by xend.
- */
-static int xen_be_try_setup(struct XenDevice *xendev)
-{
- char token[XEN_BUFSIZE];
- int be_state;
-
- if (xenstore_read_be_int(xendev, "state", &be_state) == -1) {
- xen_pv_printf(xendev, 0, "reading backend state failed\n");
- return -1;
- }
-
- if (be_state != XenbusStateInitialising) {
- xen_pv_printf(xendev, 0, "initial backend state is wrong (%s)\n",
- xenbus_strstate(be_state));
- return -1;
- }
-
- xendev->fe = xenstore_read_be_str(xendev, "frontend");
- if (xendev->fe == NULL) {
- xen_pv_printf(xendev, 0, "reading frontend path failed\n");
- return -1;
- }
-
- /* setup frontend watch */
- snprintf(token, sizeof(token), "fe:%p", xendev);
- if (!xs_watch(xenstore, xendev->fe, token)) {
- xen_pv_printf(xendev, 0, "watching frontend path (%s) failed\n",
- xendev->fe);
- return -1;
- }
- xen_be_set_state(xendev, XenbusStateInitialising);
-
- xen_be_backend_changed(xendev, NULL);
- xen_be_frontend_changed(xendev, NULL);
- return 0;
-}
-
-/*
- * Try initialize xendev. Prepare everything the backend can do
- * without synchronizing with the frontend. Fakes hotplug-status. No
- * hotplug involved here because this is about userspace drivers, thus
- * there are kernel backend devices which could invoke hotplug.
- *
- * Goes to InitWait on success.
- */
-static int xen_be_try_init(struct XenDevice *xendev)
-{
- int rc = 0;
-
- if (!xendev->online) {
- xen_pv_printf(xendev, 1, "not online\n");
- return -1;
- }
-
- if (xendev->ops->init) {
- rc = xendev->ops->init(xendev);
- }
- if (rc != 0) {
- xen_pv_printf(xendev, 1, "init() failed\n");
- return rc;
- }
-
- xenstore_write_be_str(xendev, "hotplug-status", "connected");
- xen_be_set_state(xendev, XenbusStateInitWait);
- return 0;
-}
-
-/*
- * Try to initialise xendev. Depends on the frontend being ready
- * for it (shared ring and evtchn info in xenstore, state being
- * Initialised or Connected).
- *
- * Goes to Connected on success.
- */
-static int xen_be_try_initialise(struct XenDevice *xendev)
-{
- int rc = 0;
-
- if (xendev->fe_state != XenbusStateInitialised &&
- xendev->fe_state != XenbusStateConnected) {
- if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
- xen_pv_printf(xendev, 2, "frontend not ready, ignoring\n");
- } else {
- xen_pv_printf(xendev, 2, "frontend not ready (yet)\n");
- return -1;
- }
- }
-
- if (xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV) {
- xendev->gnttabdev = xengnttab_open(NULL, 0);
- if (xendev->gnttabdev == NULL) {
- xen_pv_printf(NULL, 0, "can't open gnttab device\n");
- return -1;
- }
- } else {
- xendev->gnttabdev = NULL;
- }
-
- if (xendev->ops->initialise) {
- rc = xendev->ops->initialise(xendev);
- }
- if (rc != 0) {
- xen_pv_printf(xendev, 0, "initialise() failed\n");
- return rc;
- }
-
- xen_be_set_state(xendev, XenbusStateConnected);
- return 0;
-}
-
-/*
- * Try to let xendev know that it is connected. Depends on the
- * frontend being Connected. Note that this may be called more
- * than once since the backend state is not modified.
- */
-static void xen_be_try_connected(struct XenDevice *xendev)
-{
- if (!xendev->ops->connected) {
- return;
- }
-
- if (xendev->fe_state != XenbusStateConnected) {
- if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
- xen_pv_printf(xendev, 2, "frontend not ready, ignoring\n");
- } else {
- xen_pv_printf(xendev, 2, "frontend not ready (yet)\n");
- return;
- }
- }
-
- xendev->ops->connected(xendev);
-}
-
-/*
- * Teardown connection.
- *
- * Goes to Closed when done.
- */
-static void xen_be_disconnect(struct XenDevice *xendev, enum xenbus_state state)
-{
- if (xendev->be_state != XenbusStateClosing &&
- xendev->be_state != XenbusStateClosed &&
- xendev->ops->disconnect) {
- xendev->ops->disconnect(xendev);
- }
- if (xendev->gnttabdev) {
- xengnttab_close(xendev->gnttabdev);
- xendev->gnttabdev = NULL;
- }
- if (xendev->be_state != state) {
- xen_be_set_state(xendev, state);
- }
-}
-
-/*
- * Try to reset xendev, for reconnection by another frontend instance.
- */
-static int xen_be_try_reset(struct XenDevice *xendev)
-{
- if (xendev->fe_state != XenbusStateInitialising) {
- return -1;
- }
-
- xen_pv_printf(xendev, 1, "device reset (for re-connect)\n");
- xen_be_set_state(xendev, XenbusStateInitialising);
- return 0;
-}
-
-/*
- * state change dispatcher function
- */
-void xen_be_check_state(struct XenDevice *xendev)
-{
- int rc = 0;
-
- /* frontend may request shutdown from almost anywhere */
- if (xendev->fe_state == XenbusStateClosing ||
- xendev->fe_state == XenbusStateClosed) {
- xen_be_disconnect(xendev, xendev->fe_state);
- return;
- }
-
- /* check for possible backend state transitions */
- for (;;) {
- switch (xendev->be_state) {
- case XenbusStateUnknown:
- rc = xen_be_try_setup(xendev);
- break;
- case XenbusStateInitialising:
- rc = xen_be_try_init(xendev);
- break;
- case XenbusStateInitWait:
- rc = xen_be_try_initialise(xendev);
- break;
- case XenbusStateConnected:
- /* xendev->be_state doesn't change */
- xen_be_try_connected(xendev);
- rc = -1;
- break;
- case XenbusStateClosed:
- rc = xen_be_try_reset(xendev);
- break;
- default:
- rc = -1;
- }
- if (rc != 0) {
- break;
- }
- }
-}
-
-/* ------------------------------------------------------------- */
-
-static int xenstore_scan(const char *type, int dom, struct XenDevOps *ops)
-{
- struct XenDevice *xendev;
- char path[XEN_BUFSIZE], token[XEN_BUFSIZE];
- char **dev = NULL;
- unsigned int cdev, j;
-
- /* setup watch */
- snprintf(token, sizeof(token), "be:%p:%d:%p", type, dom, ops);
- snprintf(path, sizeof(path), "backend/%s/%d", type, dom);
- if (!xs_watch(xenstore, path, token)) {
- xen_pv_printf(NULL, 0, "xen be: watching backend path (%s) failed\n",
- path);
- return -1;
- }
-
- /* look for backends */
- dev = xs_directory(xenstore, 0, path, &cdev);
- if (!dev) {
- return 0;
- }
- for (j = 0; j < cdev; j++) {
- xendev = xen_be_get_xendev(type, dom, atoi(dev[j]), ops);
- if (xendev == NULL) {
- continue;
- }
- xen_be_check_state(xendev);
- }
- free(dev);
- return 0;
-}
-
-void xenstore_update_be(char *watch, char *type, int dom,
- struct XenDevOps *ops)
-{
- struct XenDevice *xendev;
- char path[XEN_BUFSIZE], *bepath;
- unsigned int len, dev;
-
- len = snprintf(path, sizeof(path), "backend/%s/%d", type, dom);
- if (strncmp(path, watch, len) != 0) {
- return;
- }
- if (sscanf(watch+len, "/%u/%255s", &dev, path) != 2) {
- strcpy(path, "");
- if (sscanf(watch+len, "/%u", &dev) != 1) {
- dev = -1;
- }
- }
- if (dev == -1) {
- return;
- }
-
- xendev = xen_be_get_xendev(type, dom, dev, ops);
- if (xendev != NULL) {
- bepath = xs_read(xenstore, 0, xendev->be, &len);
- if (bepath == NULL) {
- xen_pv_del_xendev(xendev);
- } else {
- free(bepath);
- xen_be_backend_changed(xendev, path);
- xen_be_check_state(xendev);
- }
- }
-}
-
-void xenstore_update_fe(char *watch, struct XenDevice *xendev)
-{
- char *node;
- unsigned int len;
-
- len = strlen(xendev->fe);
- if (strncmp(xendev->fe, watch, len) != 0) {
- return;
- }
- if (watch[len] != '/') {
- return;
- }
- node = watch + len + 1;
-
- xen_be_frontend_changed(xendev, node);
- xen_be_check_state(xendev);
-}
-/* -------------------------------------------------------------------- */
-
-int xen_be_init(void)
-{
- xengnttab_handle *gnttabdev;
-
- xenstore = xs_daemon_open();
- if (!xenstore) {
- xen_pv_printf(NULL, 0, "can't connect to xenstored\n");
- return -1;
- }
-
- qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL);
-
- if (xen_xc == NULL || xen_fmem == NULL) {
- /* Check if xen_init() have been called */
- goto err;
- }
-
- gnttabdev = xengnttab_open(NULL, 0);
- if (gnttabdev != NULL) {
- if (xengnttab_grant_copy(gnttabdev, 0, NULL) == 0) {
- xen_feature_grant_copy = true;
- }
- xengnttab_close(gnttabdev);
- }
-
- xen_sysdev = qdev_create(NULL, TYPE_XENSYSDEV);
- qdev_init_nofail(xen_sysdev);
- xen_sysbus = qbus_create(TYPE_XENSYSBUS, DEVICE(xen_sysdev), "xen-sysbus");
- qbus_set_bus_hotplug_handler(xen_sysbus, &error_abort);
-
- return 0;
-
-err:
- qemu_set_fd_handler(xs_fileno(xenstore), NULL, NULL, NULL);
- xs_daemon_close(xenstore);
- xenstore = NULL;
-
- return -1;
-}
-
-static void xen_set_dynamic_sysbus(void)
-{
- Object *machine = qdev_get_machine();
- ObjectClass *oc = object_get_class(machine);
- MachineClass *mc = MACHINE_CLASS(oc);
-
- machine_class_allow_dynamic_sysbus_dev(mc, TYPE_XENSYSDEV);
-}
-
-int xen_be_register(const char *type, struct XenDevOps *ops)
-{
- char path[50];
- int rc;
-
- if (ops->backend_register) {
- rc = ops->backend_register();
- if (rc) {
- return rc;
- }
- }
-
- snprintf(path, sizeof(path), "device-model/%u/backends/%s", xen_domid,
- type);
- xenstore_mkdir(path, XS_PERM_NONE);
-
- return xenstore_scan(type, xen_domid, ops);
-}
-
-void xen_be_register_common(void)
-{
- xen_set_dynamic_sysbus();
-
- xen_be_register("console", &xen_console_ops);
- xen_be_register("vkbd", &xen_kbdmouse_ops);
- xen_be_register("qdisk", &xen_blkdev_ops);
-#ifdef CONFIG_VIRTFS
- xen_be_register("9pfs", &xen_9pfs_ops);
-#endif
-#ifdef CONFIG_USB_LIBUSB
- xen_be_register("qusb", &xen_usb_ops);
-#endif
-}
-
-int xen_be_bind_evtchn(struct XenDevice *xendev)
-{
- if (xendev->local_port != -1) {
- return 0;
- }
- xendev->local_port = xenevtchn_bind_interdomain
- (xendev->evtchndev, xendev->dom, xendev->remote_port);
- if (xendev->local_port == -1) {
- xen_pv_printf(xendev, 0, "xenevtchn_bind_interdomain failed\n");
- return -1;
- }
- xen_pv_printf(xendev, 2, "bind evtchn port %d\n", xendev->local_port);
- qemu_set_fd_handler(xenevtchn_fd(xendev->evtchndev),
- xen_pv_evtchn_event, NULL, xendev);
- return 0;
-}
-
-
-static Property xendev_properties[] = {
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void xendev_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- dc->props = xendev_properties;
- set_bit(DEVICE_CATEGORY_MISC, dc->categories);
- /* xen-backend devices can be plugged/unplugged dynamically */
- dc->user_creatable = true;
-}
-
-static const TypeInfo xendev_type_info = {
- .name = TYPE_XENBACKEND,
- .parent = TYPE_XENSYSDEV,
- .class_init = xendev_class_init,
- .instance_size = sizeof(struct XenDevice),
-};
-
-static void xen_sysbus_class_init(ObjectClass *klass, void *data)
-{
- HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
-
- hc->unplug = qdev_simple_device_unplug_cb;
-}
-
-static const TypeInfo xensysbus_info = {
- .name = TYPE_XENSYSBUS,
- .parent = TYPE_BUS,
- .class_init = xen_sysbus_class_init,
- .interfaces = (InterfaceInfo[]) {
- { TYPE_HOTPLUG_HANDLER },
- { }
- }
-};
-
-static int xen_sysdev_init(SysBusDevice *dev)
-{
- return 0;
-}
-
-static Property xen_sysdev_properties[] = {
- {/* end of property list */},
-};
-
-static void xen_sysdev_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = xen_sysdev_init;
- dc->props = xen_sysdev_properties;
- dc->bus_type = TYPE_XENSYSBUS;
-}
-
-static const TypeInfo xensysdev_info = {
- .name = TYPE_XENSYSDEV,
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(SysBusDevice),
- .class_init = xen_sysdev_class_init,
-};
-
-static void xenbe_register_types(void)
-{
- type_register_static(&xensysbus_info);
- type_register_static(&xensysdev_info);
- type_register_static(&xendev_type_info);
-}
-
-type_init(xenbe_register_types)
@@ -1,5 +1,5 @@
#include "qemu/osdep.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "qemu/option.h"
#include "sysemu/blockdev.h"
@@ -59,7 +59,7 @@
#include "hw/pci/pci.h"
#include "hw/xen/xen.h"
#include "hw/i386/pc.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "xen_pt.h"
#include "qemu/range.h"
#include "exec/address-spaces.h"
@@ -15,7 +15,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/timer.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "xen_pt.h"
#define XEN_PT_MERGE_VALUE(value, data, val_mask) \
@@ -5,7 +5,7 @@
#include "qapi/error.h"
#include "xen_pt.h"
#include "xen-host-pci-device.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
static unsigned long igd_guest_opregion;
static unsigned long igd_host_opregion;
@@ -11,7 +11,7 @@
#include "qemu/osdep.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "xen_pt.h"
#include "hw/i386/apic-msidef.h"
@@ -20,7 +20,7 @@
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "hw/qdev-core.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "hw/xen/xen_pvdev.h"
/* private */
@@ -34,7 +34,7 @@ struct xs_dirs {
static QTAILQ_HEAD(xs_dirs_head, xs_dirs) xs_cleanup =
QTAILQ_HEAD_INITIALIZER(xs_cleanup);
-static QTAILQ_HEAD(XenDeviceHead, XenDevice) xendevs =
+static QTAILQ_HEAD(XenLegacyDeviceHead, XenLegacyDevice) xendevs =
QTAILQ_HEAD_INITIALIZER(xendevs);
/* ------------------------------------------------------------- */
@@ -195,7 +195,7 @@ const char *xenbus_strstate(enum xenbus_state state)
* 2 == noisy debug messages (logfile only).
* 3 == will flood your log (logfile only).
*/
-void xen_pv_printf(struct XenDevice *xendev, int msg_level,
+void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
const char *fmt, ...)
{
va_list args;
@@ -230,7 +230,7 @@ void xen_pv_printf(struct XenDevice *xendev, int msg_level,
void xen_pv_evtchn_event(void *opaque)
{
- struct XenDevice *xendev = opaque;
+ struct XenLegacyDevice *xendev = opaque;
evtchn_port_t port;
port = xenevtchn_pending(xendev->evtchndev);
@@ -247,7 +247,7 @@ void xen_pv_evtchn_event(void *opaque)
}
}
-void xen_pv_unbind_evtchn(struct XenDevice *xendev)
+void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev)
{
if (xendev->local_port == -1) {
return;
@@ -258,16 +258,16 @@ void xen_pv_unbind_evtchn(struct XenDevice *xendev)
xendev->local_port = -1;
}
-int xen_pv_send_notify(struct XenDevice *xendev)
+int xen_pv_send_notify(struct XenLegacyDevice *xendev)
{
return xenevtchn_notify(xendev->evtchndev, xendev->local_port);
}
/* ------------------------------------------------------------- */
-struct XenDevice *xen_pv_find_xendev(const char *type, int dom, int dev)
+struct XenLegacyDevice *xen_pv_find_xendev(const char *type, int dom, int dev)
{
- struct XenDevice *xendev;
+ struct XenLegacyDevice *xendev;
QTAILQ_FOREACH(xendev, &xendevs, next) {
if (xendev->dom != dom) {
@@ -287,7 +287,7 @@ struct XenDevice *xen_pv_find_xendev(const char *type, int dom, int dev)
/*
* release xen backend device.
*/
-void xen_pv_del_xendev(struct XenDevice *xendev)
+void xen_pv_del_xendev(struct XenLegacyDevice *xendev)
{
if (xendev->ops->free) {
xendev->ops->free(xendev);
@@ -312,7 +312,7 @@ void xen_pv_del_xendev(struct XenDevice *xendev)
qdev_unplug(&xendev->qdev, NULL);
}
-void xen_pv_insert_xendev(struct XenDevice *xendev)
+void xen_pv_insert_xendev(struct XenLegacyDevice *xendev)
{
QTAILQ_INSERT_TAIL(&xendevs, xendev, next);
}
@@ -1,6 +1,6 @@
#include "qemu/osdep.h"
#include "qemu/units.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "xen_domainbuild.h"
#include "qemu/timer.h"
#include "qemu/log.h"
@@ -26,7 +26,7 @@
#include "qemu/error-report.h"
#include "hw/hw.h"
#include "hw/boards.h"
-#include "hw/xen/xen_backend.h"
+#include "hw/xen/xen-legacy-backend.h"
#include "xen_domainbuild.h"
#include "sysemu/block-backend.h"
new file mode 100644
@@ -0,0 +1,104 @@
+#ifndef QEMU_HW_XEN_BACKEND_H
+#define QEMU_HW_XEN_BACKEND_H
+
+#include "hw/xen/xen_common.h"
+#include "hw/xen/xen_pvdev.h"
+#include "sysemu/sysemu.h"
+#include "net/net.h"
+
+#define TYPE_XENSYSDEV "xen-sysdev"
+#define TYPE_XENSYSBUS "xen-sysbus"
+#define TYPE_XENBACKEND "xen-backend"
+
+#define XENBACKEND_DEVICE(obj) \
+ OBJECT_CHECK(XenLegacyDevice, (obj), TYPE_XENBACKEND)
+
+/* variables */
+extern struct xs_handle *xenstore;
+extern const char *xen_protocol;
+extern DeviceState *xen_sysdev;
+extern BusState *xen_sysbus;
+
+int xenstore_mkdir(char *path, int p);
+int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
+ const char *val);
+int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
+ int ival);
+int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
+ int64_t ival);
+char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node);
+int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
+ int *ival);
+void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev);
+void xenstore_update_be(char *watch, char *type, int dom,
+ struct XenDevOps *ops);
+char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node);
+int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
+ int *ival);
+int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
+ uint64_t *uval);
+
+void xen_be_check_state(struct XenLegacyDevice *xendev);
+
+/* xen backend driver bits */
+int xen_be_init(void);
+void xen_be_register_common(void);
+int xen_be_register(const char *type, struct XenDevOps *ops);
+int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state);
+int xen_be_bind_evtchn(struct XenLegacyDevice *xendev);
+void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
+ unsigned int nr_refs);
+void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
+ unsigned int nr_refs, int prot);
+void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
+ unsigned int nr_refs);
+
+typedef struct XenGrantCopySegment {
+ union {
+ void *virt;
+ struct {
+ uint32_t ref;
+ off_t offset;
+ } foreign;
+ } source, dest;
+ size_t len;
+} XenGrantCopySegment;
+
+int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev,
+ bool to_domain, XenGrantCopySegment segs[],
+ unsigned int nr_segs);
+
+static inline void *xen_be_map_grant_ref(struct XenLegacyDevice *xendev,
+ uint32_t ref, int prot)
+{
+ return xen_be_map_grant_refs(xendev, &ref, 1, prot);
+}
+
+static inline void xen_be_unmap_grant_ref(struct XenLegacyDevice *xendev,
+ void *ptr)
+{
+ return xen_be_unmap_grant_refs(xendev, ptr, 1);
+}
+
+/* actual backend drivers */
+extern struct XenDevOps xen_console_ops; /* xen_console.c */
+extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */
+extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */
+extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */
+#ifdef CONFIG_VIRTFS
+extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */
+#endif
+extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
+#ifdef CONFIG_USB_LIBUSB
+extern struct XenDevOps xen_usb_ops; /* xen-usb.c */
+#endif
+
+/* configuration (aka xenbus setup) */
+void xen_config_cleanup(void);
+int xen_config_dev_blk(DriveInfo *disk);
+int xen_config_dev_nic(NICInfo *nic);
+int xen_config_dev_vfb(int vdev, const char *type);
+int xen_config_dev_vkbd(int vdev);
+int xen_config_dev_console(int vdev);
+
+#endif /* QEMU_HW_XEN_BACKEND_H */
deleted file mode 100644
@@ -1,99 +0,0 @@
-#ifndef QEMU_HW_XEN_BACKEND_H
-#define QEMU_HW_XEN_BACKEND_H
-
-#include "hw/xen/xen_common.h"
-#include "hw/xen/xen_pvdev.h"
-#include "sysemu/sysemu.h"
-#include "net/net.h"
-
-#define TYPE_XENSYSDEV "xen-sysdev"
-#define TYPE_XENSYSBUS "xen-sysbus"
-#define TYPE_XENBACKEND "xen-backend"
-
-#define XENBACKEND_DEVICE(obj) \
- OBJECT_CHECK(XenDevice, (obj), TYPE_XENBACKEND)
-
-/* variables */
-extern struct xs_handle *xenstore;
-extern const char *xen_protocol;
-extern DeviceState *xen_sysdev;
-extern BusState *xen_sysbus;
-
-int xenstore_mkdir(char *path, int p);
-int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val);
-int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival);
-int xenstore_write_be_int64(struct XenDevice *xendev, const char *node, int64_t ival);
-char *xenstore_read_be_str(struct XenDevice *xendev, const char *node);
-int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival);
-void xenstore_update_fe(char *watch, struct XenDevice *xendev);
-void xenstore_update_be(char *watch, char *type, int dom,
- struct XenDevOps *ops);
-char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node);
-int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival);
-int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node,
- uint64_t *uval);
-
-void xen_be_check_state(struct XenDevice *xendev);
-
-/* xen backend driver bits */
-int xen_be_init(void);
-void xen_be_register_common(void);
-int xen_be_register(const char *type, struct XenDevOps *ops);
-int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
-int xen_be_bind_evtchn(struct XenDevice *xendev);
-void xen_be_set_max_grant_refs(struct XenDevice *xendev,
- unsigned int nr_refs);
-void *xen_be_map_grant_refs(struct XenDevice *xendev, uint32_t *refs,
- unsigned int nr_refs, int prot);
-void xen_be_unmap_grant_refs(struct XenDevice *xendev, void *ptr,
- unsigned int nr_refs);
-
-typedef struct XenGrantCopySegment {
- union {
- void *virt;
- struct {
- uint32_t ref;
- off_t offset;
- } foreign;
- } source, dest;
- size_t len;
-} XenGrantCopySegment;
-
-int xen_be_copy_grant_refs(struct XenDevice *xendev,
- bool to_domain, XenGrantCopySegment segs[],
- unsigned int nr_segs);
-
-static inline void *xen_be_map_grant_ref(struct XenDevice *xendev,
- uint32_t ref, int prot)
-{
- return xen_be_map_grant_refs(xendev, &ref, 1, prot);
-}
-
-static inline void xen_be_unmap_grant_ref(struct XenDevice *xendev,
- void *ptr)
-{
- return xen_be_unmap_grant_refs(xendev, ptr, 1);
-}
-
-/* actual backend drivers */
-extern struct XenDevOps xen_console_ops; /* xen_console.c */
-extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */
-extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */
-extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */
-#ifdef CONFIG_VIRTFS
-extern struct XenDevOps xen_9pfs_ops; /* xen-9p-backend.c */
-#endif
-extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */
-#ifdef CONFIG_USB_LIBUSB
-extern struct XenDevOps xen_usb_ops; /* xen-usb.c */
-#endif
-
-/* configuration (aka xenbus setup) */
-void xen_config_cleanup(void);
-int xen_config_dev_blk(DriveInfo *disk);
-int xen_config_dev_nic(NICInfo *nic);
-int xen_config_dev_vfb(int vdev, const char *type);
-int xen_config_dev_vkbd(int vdev);
-int xen_config_dev_console(int vdev);
-
-#endif /* QEMU_HW_XEN_BACKEND_H */
@@ -6,7 +6,7 @@
#define XEN_BUFSIZE 1024
-struct XenDevice;
+struct XenLegacyDevice;
/* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */
#define DEVOPS_FLAG_NEED_GNTDEV 1
@@ -16,19 +16,21 @@ struct XenDevice;
struct XenDevOps {
size_t size;
uint32_t flags;
- void (*alloc)(struct XenDevice *xendev);
- int (*init)(struct XenDevice *xendev);
- int (*initialise)(struct XenDevice *xendev);
- void (*connected)(struct XenDevice *xendev);
- void (*event)(struct XenDevice *xendev);
- void (*disconnect)(struct XenDevice *xendev);
- int (*free)(struct XenDevice *xendev);
- void (*backend_changed)(struct XenDevice *xendev, const char *node);
- void (*frontend_changed)(struct XenDevice *xendev, const char *node);
+ void (*alloc)(struct XenLegacyDevice *xendev);
+ int (*init)(struct XenLegacyDevice *xendev);
+ int (*initialise)(struct XenLegacyDevice *xendev);
+ void (*connected)(struct XenLegacyDevice *xendev);
+ void (*event)(struct XenLegacyDevice *xendev);
+ void (*disconnect)(struct XenLegacyDevice *xendev);
+ int (*free)(struct XenLegacyDevice *xendev);
+ void (*backend_changed)(struct XenLegacyDevice *xendev,
+ const char *node);
+ void (*frontend_changed)(struct XenLegacyDevice *xendev,
+ const char *node);
int (*backend_register)(void);
};
-struct XenDevice {
+struct XenLegacyDevice {
DeviceState qdev;
const char *type;
int dom;
@@ -49,7 +51,7 @@ struct XenDevice {
xengnttab_handle *gnttabdev;
struct XenDevOps *ops;
- QTAILQ_ENTRY(XenDevice) next;
+ QTAILQ_ENTRY(XenLegacyDevice) next;
};
/* ------------------------------------------------------------- */
@@ -66,14 +68,14 @@ void xenstore_update(void *unused);
const char *xenbus_strstate(enum xenbus_state state);
void xen_pv_evtchn_event(void *opaque);
-void xen_pv_insert_xendev(struct XenDevice *xendev);
-void xen_pv_del_xendev(struct XenDevice *xendev);
-struct XenDevice *xen_pv_find_xendev(const char *type, int dom, int dev);
+void xen_pv_insert_xendev(struct XenLegacyDevice *xendev);
+void xen_pv_del_xendev(struct XenLegacyDevice *xendev);
+struct XenLegacyDevice *xen_pv_find_xendev(const char *type, int dom, int dev);
-void xen_pv_unbind_evtchn(struct XenDevice *xendev);
-int xen_pv_send_notify(struct XenDevice *xendev);
+void xen_pv_unbind_evtchn(struct XenLegacyDevice *xendev);
+int xen_pv_send_notify(struct XenLegacyDevice *xendev);
-void xen_pv_printf(struct XenDevice *xendev, int msg_level,
+void xen_pv_printf(struct XenLegacyDevice *xendev, int msg_level,
const char *fmt, ...) GCC_FMT_ATTR(3, 4);
#endif /* QEMU_HW_XEN_PVDEV_H */