rpms/qemu/devel qemu-Move-virtio-serial-to-Makefile.objs.patch, NONE, 1.1 qemu-virtio-Remove-duplicate-macro-definition-for-max.-v.patch, NONE, 1.1 qemu-virtio-console-Rename-virtio-serial.c-back-to-virti.patch, NONE, 1.1 qemu-virtio-console-qdev-conversion-new-virtio-serial-b.patch, NONE, 1.1 qemu-virtio-serial-Add-a-virtserialport-device-for-gen.patch, NONE, 1.1 qemu-virtio-serial-Use-MSI-vectors-for-port-virtqueues.patch, NONE, 1.1 qemu-virtio-serial-bus-Add-a-port-name-property-for-po.patch, NONE, 1.1 qemu-virtio-serial-bus-Add-ability-to-hot-unplug-ports.patch, NONE, 1.1 qemu-virtio-serial-bus-Maintain-guest-and-host-port-open.patch, NONE, 1.1 qemu.spec, 1.153, 1.154
amitshah
amitshah at fedoraproject.org
Wed Jan 27 18:10:33 UTC 2010
Author: amitshah
Update of /cvs/pkgs/rpms/qemu/devel
In directory cvs1.fedora.phx.redhat.com:/tmp/cvs-serv6530
Modified Files:
qemu.spec
Added Files:
qemu-Move-virtio-serial-to-Makefile.objs.patch
qemu-virtio-Remove-duplicate-macro-definition-for-max.-v.patch
qemu-virtio-console-Rename-virtio-serial.c-back-to-virti.patch
qemu-virtio-console-qdev-conversion-new-virtio-serial-b.patch
qemu-virtio-serial-Add-a-virtserialport-device-for-gen.patch
qemu-virtio-serial-Use-MSI-vectors-for-port-virtqueues.patch
qemu-virtio-serial-bus-Add-a-port-name-property-for-po.patch
qemu-virtio-serial-bus-Add-ability-to-hot-unplug-ports.patch
qemu-virtio-serial-bus-Maintain-guest-and-host-port-open.patch
Log Message:
Add patches for the VirtioSerial feature; update spec to build with
the new patches.
qemu-Move-virtio-serial-to-Makefile.objs.patch:
Makefile.hw | 2 +-
Makefile.target | 3 +--
2 files changed, 2 insertions(+), 3 deletions(-)
--- NEW FILE qemu-Move-virtio-serial-to-Makefile.objs.patch ---
>From 12a074387284fc530876ef709b3d344adea9b226 Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:57 +0530
Subject: [PATCH 7/9] Move virtio-serial to Makefile.objs
There's nothing target-dependent in the virtio-serial code so allow it
to be compiled just once for all the targets.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
Makefile.hw | 2 +-
Makefile.target | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Makefile.hw b/Makefile.hw
index 6f4dbc4..de8a0c5 100644
--- a/Makefile.hw
+++ b/Makefile.hw
@@ -13,7 +13,7 @@ QEMU_CFLAGS+=-I.. -I$(SRC_PATH)/fpu
obj-y =
obj-y += loader.o
-obj-y += virtio.o
+obj-y += virtio.o virtio-serial.o
obj-y += fw_cfg.o
obj-y += watchdog.o
obj-$(CONFIG_ECC) += ecc.o
diff --git a/Makefile.target b/Makefile.target
index 234577c..0e4cfd1 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -166,7 +166,7 @@ ifdef CONFIG_SOFTMMU
obj-y = vl.o async.o monitor.o pci.o pci_host.o pcie_host.o machine.o gdbstub.o
# virtio has to be here due to weird dependency between PCI and virtio-net.
# need to fix this properly
-obj-y += virtio-blk.o virtio-balloon.o virtio-net.o virtio-serial.o virtio-serial-bus.o virtio-pci.o
+obj-y += virtio-blk.o virtio-balloon.o virtio-net.o virtio-pci.o virtio-serial-bus.o
obj-$(CONFIG_KVM) += kvm.o kvm-all.o
# MSI-X depends on kvm for interrupt injection,
# so moved it from Makefile.hw to Makefile.target for now
--
1.6.2.5
qemu-virtio-Remove-duplicate-macro-definition-for-max.-v.patch:
virtio.c | 2 --
virtio.h | 3 +--
2 files changed, 1 insertion(+), 4 deletions(-)
--- NEW FILE qemu-virtio-Remove-duplicate-macro-definition-for-max.-v.patch ---
>From c11631e8bc91a1d1be2b89196e886a1385820dfb Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:51 +0530
Subject: [PATCH 1/9] virtio: Remove duplicate macro definition for max. virtqueues, bump up the max
VIRTIO_PCI_QUEUE_MAX is redefined in hw/virtio.c. Let's just keep it in
hw/virtio.h.
Also, bump up the value of the maximum allowed virtqueues to 64. This is
in preparation to allow multiple ports per virtio-console device.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
hw/virtio.c | 2 --
hw/virtio.h | 2 +-
2 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/hw/virtio.c b/hw/virtio.c
index cecd0dc..88f4e78 100644
--- a/hw/virtio.c
+++ b/hw/virtio.c
@@ -75,8 +75,6 @@ struct VirtQueue
void (*handle_output)(VirtIODevice *vdev, VirtQueue *vq);
};
-#define VIRTIO_PCI_QUEUE_MAX 16
-
/* virt queue functions */
static void virtqueue_init(VirtQueue *vq)
{
diff --git a/hw/virtio.h b/hw/virtio.h
index 35532a6..051910a 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -90,7 +90,7 @@ typedef struct {
unsigned (*get_features)(void * opaque);
} VirtIOBindings;
-#define VIRTIO_PCI_QUEUE_MAX 16
+#define VIRTIO_PCI_QUEUE_MAX 64
#define VIRTIO_NO_VECTOR 0xffff
--
1.6.2.5
qemu-virtio-console-Rename-virtio-serial.c-back-to-virti.patch:
b/Makefile.hw | 2
b/hw/virtio-console.c | 146 +++++++++++++++++++++++++++++++++++++++++++++++++
hw/virtio-serial.c | 147 --------------------------------------------------
3 files changed, 147 insertions(+), 148 deletions(-)
--- NEW FILE qemu-virtio-console-Rename-virtio-serial.c-back-to-virti.patch ---
>From 9c7f6b094950f7772068b957c795d76463cdeba0 Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Thu, 21 Jan 2010 15:43:26 +0530
Subject: [PATCH 9/9] virtio-console: Rename virtio-serial.c back to virtio-console.c
This file was renamed to ease the reviews of the recent changes
that went in.
Now that the changes are done, rename the file back to its original
name.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
Makefile.hw | 2 +-
hw/virtio-console.c | 146 +++++++++++++++++++++++++++++++++++++++++++++++++++
hw/virtio-serial.c | 146 ---------------------------------------------------
3 files changed, 147 insertions(+), 147 deletions(-)
create mode 100644 hw/virtio-console.c
delete mode 100644 hw/virtio-serial.c
diff --git a/Makefile.hw b/Makefile.hw
index de8a0c5..43ca541 100644
--- a/Makefile.hw
+++ b/Makefile.hw
@@ -13,7 +13,7 @@ QEMU_CFLAGS+=-I.. -I$(SRC_PATH)/fpu
obj-y =
obj-y += loader.o
-obj-y += virtio.o virtio-serial.o
+obj-y += virtio.o virtio-console.o
obj-y += fw_cfg.o
obj-y += watchdog.o
obj-$(CONFIG_ECC) += ecc.o
diff --git a/hw/virtio-console.c b/hw/virtio-console.c
new file mode 100644
index 0000000..bd44ec6
--- /dev/null
+++ b/hw/virtio-console.c
@@ -0,0 +1,146 @@
+/*
+ * Virtio Console and Generic Serial Port Devices
+ *
+ * Copyright Red Hat, Inc. 2009
+ *
+ * Authors:
+ * Amit Shah <amit.shah at redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ */
+
+#include "qemu-char.h"
+#include "virtio-serial.h"
+
+typedef struct VirtConsole {
+ VirtIOSerialPort port;
+ CharDriverState *chr;
+} VirtConsole;
+
+
+/* Callback function that's called when the guest sends us data */
+static size_t flush_buf(VirtIOSerialPort *port, const uint8_t *buf, size_t len)
+{
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+ ssize_t ret;
+
+ ret = qemu_chr_write(vcon->chr, buf, len);
+
+ return ret < 0 ? 0 : ret;
+}
+
+/* Readiness of the guest to accept data on a port */
+static int chr_can_read(void *opaque)
+{
+ VirtConsole *vcon = opaque;
+
+ return virtio_serial_guest_ready(&vcon->port);
+}
+
+/* Send data from a char device over to the guest */
+static void chr_read(void *opaque, const uint8_t *buf, int size)
+{
+ VirtConsole *vcon = opaque;
+
+ virtio_serial_write(&vcon->port, buf, size);
+}
+
+static void chr_event(void *opaque, int event)
+{
+ VirtConsole *vcon = opaque;
+
+ switch (event) {
+ case CHR_EVENT_OPENED: {
+ virtio_serial_open(&vcon->port);
+ break;
+ }
+ case CHR_EVENT_CLOSED:
+ virtio_serial_close(&vcon->port);
+ break;
+ }
+}
+
+/* Virtio Console Ports */
+static int virtconsole_initfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ port->info = dev->info;
+
+ port->is_console = true;
+
+ if (vcon->chr) {
+ qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
+ vcon);
+ port->info->have_data = flush_buf;
+ }
+ return 0;
+}
+
+static int virtconsole_exitfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ if (vcon->chr) {
+ port->info->have_data = NULL;
+ qemu_chr_close(vcon->chr);
+ }
+
+ return 0;
+}
+
+static VirtIOSerialPortInfo virtconsole_info = {
+ .qdev.name = "virtconsole",
+ .qdev.size = sizeof(VirtConsole),
+ .init = virtconsole_initfn,
+ .exit = virtconsole_exitfn,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console, 1),
+ DEFINE_PROP_CHR("chardev", VirtConsole, chr),
+ DEFINE_PROP_STRING("name", VirtConsole, port.name),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void virtconsole_register(void)
+{
+ virtio_serial_port_qdev_register(&virtconsole_info);
+}
+device_init(virtconsole_register)
+
+/* Generic Virtio Serial Ports */
+static int virtserialport_initfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ port->info = dev->info;
+
+ if (vcon->chr) {
+ qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
+ vcon);
+ port->info->have_data = flush_buf;
+ }
+ return 0;
+}
+
+static VirtIOSerialPortInfo virtserialport_info = {
+ .qdev.name = "virtserialport",
+ .qdev.size = sizeof(VirtConsole),
+ .init = virtserialport_initfn,
+ .exit = virtconsole_exitfn,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_CHR("chardev", VirtConsole, chr),
+ DEFINE_PROP_STRING("name", VirtConsole, port.name),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void virtserialport_register(void)
+{
+ virtio_serial_port_qdev_register(&virtserialport_info);
+}
+device_init(virtserialport_register)
diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c
deleted file mode 100644
index bd44ec6..0000000
--- a/hw/virtio-serial.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Virtio Console and Generic Serial Port Devices
- *
- * Copyright Red Hat, Inc. 2009
- *
- * Authors:
- * Amit Shah <amit.shah at redhat.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- */
-
-#include "qemu-char.h"
-#include "virtio-serial.h"
-
-typedef struct VirtConsole {
- VirtIOSerialPort port;
- CharDriverState *chr;
-} VirtConsole;
-
-
-/* Callback function that's called when the guest sends us data */
-static size_t flush_buf(VirtIOSerialPort *port, const uint8_t *buf, size_t len)
-{
- VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
- ssize_t ret;
-
- ret = qemu_chr_write(vcon->chr, buf, len);
-
- return ret < 0 ? 0 : ret;
-}
-
-/* Readiness of the guest to accept data on a port */
-static int chr_can_read(void *opaque)
-{
- VirtConsole *vcon = opaque;
-
- return virtio_serial_guest_ready(&vcon->port);
-}
-
-/* Send data from a char device over to the guest */
-static void chr_read(void *opaque, const uint8_t *buf, int size)
-{
- VirtConsole *vcon = opaque;
-
- virtio_serial_write(&vcon->port, buf, size);
-}
-
-static void chr_event(void *opaque, int event)
-{
- VirtConsole *vcon = opaque;
-
- switch (event) {
- case CHR_EVENT_OPENED: {
- virtio_serial_open(&vcon->port);
- break;
- }
- case CHR_EVENT_CLOSED:
- virtio_serial_close(&vcon->port);
- break;
- }
-}
-
-/* Virtio Console Ports */
-static int virtconsole_initfn(VirtIOSerialDevice *dev)
-{
- VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
- VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
-
- port->info = dev->info;
-
- port->is_console = true;
-
- if (vcon->chr) {
- qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
- vcon);
- port->info->have_data = flush_buf;
- }
- return 0;
-}
-
-static int virtconsole_exitfn(VirtIOSerialDevice *dev)
-{
- VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
- VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
-
- if (vcon->chr) {
- port->info->have_data = NULL;
- qemu_chr_close(vcon->chr);
- }
-
- return 0;
-}
-
-static VirtIOSerialPortInfo virtconsole_info = {
- .qdev.name = "virtconsole",
- .qdev.size = sizeof(VirtConsole),
- .init = virtconsole_initfn,
- .exit = virtconsole_exitfn,
- .qdev.props = (Property[]) {
- DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console, 1),
- DEFINE_PROP_CHR("chardev", VirtConsole, chr),
- DEFINE_PROP_STRING("name", VirtConsole, port.name),
- DEFINE_PROP_END_OF_LIST(),
- },
-};
-
-static void virtconsole_register(void)
-{
- virtio_serial_port_qdev_register(&virtconsole_info);
-}
-device_init(virtconsole_register)
-
-/* Generic Virtio Serial Ports */
-static int virtserialport_initfn(VirtIOSerialDevice *dev)
-{
- VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
- VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
-
- port->info = dev->info;
-
- if (vcon->chr) {
- qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
- vcon);
- port->info->have_data = flush_buf;
- }
- return 0;
-}
-
-static VirtIOSerialPortInfo virtserialport_info = {
- .qdev.name = "virtserialport",
- .qdev.size = sizeof(VirtConsole),
- .init = virtserialport_initfn,
- .exit = virtconsole_exitfn,
- .qdev.props = (Property[]) {
- DEFINE_PROP_CHR("chardev", VirtConsole, chr),
- DEFINE_PROP_STRING("name", VirtConsole, port.name),
- DEFINE_PROP_END_OF_LIST(),
- },
-};
-
-static void virtserialport_register(void)
-{
- virtio_serial_port_qdev_register(&virtserialport_info);
-}
-device_init(virtserialport_register)
--
1.6.2.5
qemu-virtio-console-qdev-conversion-new-virtio-serial-b.patch:
b/Makefile.target | 2
b/hw/pc.c | 11 -
b/hw/ppc440_bamboo.c | 7
b/hw/qdev.c | 10
b/hw/s390-virtio-bus.c | 17 -
b/hw/s390-virtio-bus.h | 2
b/hw/s390-virtio.c | 8
b/hw/virtio-pci.c | 13 -
b/hw/virtio-serial-bus.c | 504 +++++++++++++++++++++++++++++++++++++++++++++++
b/hw/virtio-serial.c | 111 ++++++++++
b/hw/virtio-serial.h | 158 ++++++++++++++
b/hw/virtio.h | 2
b/qemu-options.hx | 4
b/sysemu.h | 6
b/vl.c | 18 +
hw/virtio-console.c | 146 -------------
hw/virtio-console.h | 19 -
17 files changed, 819 insertions(+), 219 deletions(-)
--- NEW FILE qemu-virtio-console-qdev-conversion-new-virtio-serial-b.patch ---
>From 76c8fc3a48dcaf6161d7cb68976db99aaf97efdd Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:52 +0530
Subject: [PATCH 2/9] virtio-console: qdev conversion, new virtio-serial-bus
This commit converts the virtio-console device to create a new
virtio-serial bus that can host console and generic serial ports. The
file hosting this code is now called virtio-serial-bus.c.
The virtio console is now a very simple qdev device that sits on the
virtio-serial-bus and communicates between the bus and qemu's chardevs.
This commit also includes a few changes to the virtio backing code for
pci and s390 to spawn the virtio-serial bus.
As a result of the qdev conversion, we get rid of a lot of legacy code.
The old-style way of instantiating a virtio console using
-virtioconsole ...
is maintained, but the new, preferred way is to use
-device virtio-serial -device virtconsole,chardev=...
With this commit, multiple devices as well as multiple ports with a
single device can be supported.
For multiple ports support, each port gets an IO vq pair. Since the
guest needs to know in advance how many vqs a particular device will
need, we have to set this number as a property of the virtio-serial
device and also as a config option.
In addition, we also spawn a pair of control IO vqs. This is an internal
channel meant for guest-host communication for things like port
open/close, sending port properties over to the guest, etc.
This commit is a part of a series of other commits to get the full
implementation of multiport support. Future commits will add other
support as well as ride on the savevm version that we bump up here.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
Makefile.target | 2 +-
hw/pc.c | 11 +-
hw/ppc440_bamboo.c | 7 -
hw/qdev.c | 10 +-
hw/s390-virtio-bus.c | 17 +-
hw/s390-virtio-bus.h | 2 +
hw/s390-virtio.c | 8 -
hw/virtio-console.c | 146 --------------
hw/virtio-console.h | 19 --
hw/virtio-pci.c | 13 +-
hw/virtio-serial-bus.c | 504 ++++++++++++++++++++++++++++++++++++++++++++++++
hw/virtio-serial.c | 111 +++++++++++
hw/virtio-serial.h | 158 +++++++++++++++
hw/virtio.h | 2 +-
qemu-options.hx | 4 +
sysemu.h | 6 -
vl.c | 17 ++-
17 files changed, 819 insertions(+), 218 deletions(-)
delete mode 100644 hw/virtio-console.c
delete mode 100644 hw/virtio-console.h
create mode 100644 hw/virtio-serial-bus.c
create mode 100644 hw/virtio-serial.c
create mode 100644 hw/virtio-serial.h
diff --git a/Makefile.target b/Makefile.target
index 6037fed..234577c 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -166,7 +166,7 @@ ifdef CONFIG_SOFTMMU
obj-y = vl.o async.o monitor.o pci.o pci_host.o pcie_host.o machine.o gdbstub.o
# virtio has to be here due to weird dependency between PCI and virtio-net.
# need to fix this properly
-obj-y += virtio-blk.o virtio-balloon.o virtio-net.o virtio-console.o virtio-pci.o
+obj-y += virtio-blk.o virtio-balloon.o virtio-net.o virtio-serial.o virtio-serial-bus.o virtio-pci.o
obj-$(CONFIG_KVM) += kvm.o kvm-all.o
# MSI-X depends on kvm for interrupt injection,
# so moved it from Makefile.hw to Makefile.target for now
diff --git a/hw/pc.c b/hw/pc.c
index 78a07c2..acbfeba 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1284,15 +1284,6 @@ static void pc_init1(ram_addr_t ram_size,
extboot_init(info->bdrv, 1);
}
- /* Add virtio console devices */
- if (pci_enabled) {
- for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
- if (virtcon_hds[i]) {
- pci_create_simple(pci_bus, -1, "virtio-console-pci");
- }
- }
- }
-
#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
if (kvm_enabled()) {
add_assigned_devices(pci_bus, assigned_devices, assigned_devices_index);
@@ -1373,7 +1364,7 @@ static QEMUMachine pc_machine_v0_10 = {
.property = "class",
.value = stringify(PCI_CLASS_STORAGE_OTHER),
},{
- .driver = "virtio-console-pci",
+ .driver = "virtio-serial-pci",
.property = "class",
.value = stringify(PCI_CLASS_DISPLAY_OTHER),
},{
diff --git a/hw/ppc440_bamboo.c b/hw/ppc440_bamboo.c
index 25417e3..c94c961 100644
--- a/hw/ppc440_bamboo.c
+++ b/hw/ppc440_bamboo.c
@@ -109,13 +109,6 @@ static void bamboo_init(ram_addr_t ram_size,
env = ppc440ep_init(&ram_size, &pcibus, pci_irq_nrs, 1, cpu_model);
if (pcibus) {
- /* Add virtio console devices */
- for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
- if (virtcon_hds[i]) {
- pci_create_simple(pcibus, -1, "virtio-console-pci");
- }
- }
-
/* Register network interfaces. */
for (i = 0; i < nb_nics; i++) {
/* There are no PCI NICs on the Bamboo board, but there are
diff --git a/hw/qdev.c b/hw/qdev.c
index b6bd4ae..c643576 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -321,13 +321,9 @@ void qdev_machine_creation_done(void)
CharDriverState *qdev_init_chardev(DeviceState *dev)
{
static int next_serial;
- static int next_virtconsole;
- /* FIXME: This is a nasty hack that needs to go away. */
- if (strncmp(dev->info->name, "virtio", 6) == 0) {
- return virtcon_hds[next_virtconsole++];
- } else {
- return serial_hds[next_serial++];
- }
+
+ /* FIXME: This function needs to go away: use chardev properties! */
+ return serial_hds[next_serial++];
}
BusState *qdev_get_parent_bus(DeviceState *dev)
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index dc154ed..95c516a 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -26,7 +26,7 @@
#include "loader.h"
#include "elf.h"
#include "hw/virtio.h"
-#include "hw/virtio-console.h"
+#include "hw/virtio-serial.h"
#include "hw/sysbus.h"
#include "kvm.h"
@@ -130,7 +130,7 @@ static int s390_virtio_blk_init(VirtIOS390Device *dev)
return s390_virtio_device_init(dev, vdev);
}
-static int s390_virtio_console_init(VirtIOS390Device *dev)
+static int s390_virtio_serial_init(VirtIOS390Device *dev)
{
VirtIOS390Bus *bus;
VirtIODevice *vdev;
@@ -138,7 +138,7 @@ static int s390_virtio_console_init(VirtIOS390Device *dev)
bus = DO_UPCAST(VirtIOS390Bus, bus, dev->qdev.parent_bus);
- vdev = virtio_console_init((DeviceState *)dev);
+ vdev = virtio_serial_init((DeviceState *)dev, dev->max_virtserial_ports);
if (!vdev) {
return -1;
}
@@ -336,11 +336,14 @@ static VirtIOS390DeviceInfo s390_virtio_blk = {
},
};
-static VirtIOS390DeviceInfo s390_virtio_console = {
- .init = s390_virtio_console_init,
- .qdev.name = "virtio-console-s390",
+static VirtIOS390DeviceInfo s390_virtio_serial = {
+ .init = s390_virtio_serial_init,
+ .qdev.name = "virtio-serial-s390",
+ .qdev.alias = "virtio-serial",
.qdev.size = sizeof(VirtIOS390Device),
.qdev.props = (Property[]) {
+ DEFINE_PROP_UINT32("max_ports", VirtIOS390Device, max_virtserial_ports,
+ 31),
DEFINE_PROP_END_OF_LIST(),
},
};
@@ -364,7 +367,7 @@ static void s390_virtio_bus_register_withprop(VirtIOS390DeviceInfo *info)
static void s390_virtio_register(void)
{
- s390_virtio_bus_register_withprop(&s390_virtio_console);
+ s390_virtio_bus_register_withprop(&s390_virtio_serial);
s390_virtio_bus_register_withprop(&s390_virtio_blk);
s390_virtio_bus_register_withprop(&s390_virtio_net);
}
diff --git a/hw/s390-virtio-bus.h b/hw/s390-virtio-bus.h
index ef36714..ad85ed3 100644
--- a/hw/s390-virtio-bus.h
+++ b/hw/s390-virtio-bus.h
@@ -40,6 +40,8 @@ typedef struct VirtIOS390Device {
VirtIODevice *vdev;
DriveInfo *dinfo;
NICConf nic;
+ /* Max. number of ports we can have for a the virtio-serial device */
+ uint32_t max_virtserial_ports;
} VirtIOS390Device;
typedef struct VirtIOS390Bus {
diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c
index 0fa6ba6..3582728 100644
--- a/hw/s390-virtio.c
+++ b/hw/s390-virtio.c
@@ -26,7 +26,6 @@
#include "loader.h"
#include "elf.h"
#include "hw/virtio.h"
-#include "hw/virtio-console.h"
#include "hw/sysbus.h"
#include "kvm.h"
@@ -207,13 +206,6 @@ static void s390_init(ram_addr_t ram_size,
strlen(kernel_cmdline), 1);
}
- /* Create VirtIO console */
- for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
- if (virtcon_hds[i]) {
- qdev_init_nofail(qdev_create((BusState *)s390_bus, "virtio-console-s390"));
- }
- }
-
/* Create VirtIO network adapters */
for(i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
diff --git a/hw/virtio-console.c b/hw/virtio-console.c
deleted file mode 100644
index 92c953c..0000000
--- a/hw/virtio-console.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Virtio Console Device
- *
- * Copyright IBM, Corp. 2008
- *
- * Authors:
- * Christian Ehrhardt <ehrhardt at linux.vnet.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- *
- */
-
-#include "hw.h"
-#include "qemu-char.h"
-#include "virtio.h"
-#include "virtio-console.h"
-
-
-typedef struct VirtIOConsole
-{
- VirtIODevice vdev;
- VirtQueue *ivq, *ovq;
- CharDriverState *chr;
-} VirtIOConsole;
-
-static VirtIOConsole *to_virtio_console(VirtIODevice *vdev)
-{
- return (VirtIOConsole *)vdev;
-}
-
-static void virtio_console_handle_output(VirtIODevice *vdev, VirtQueue *vq)
-{
- VirtIOConsole *s = to_virtio_console(vdev);
- VirtQueueElement elem;
-
- while (virtqueue_pop(vq, &elem)) {
- ssize_t len = 0;
- int d;
-
- for (d = 0; d < elem.out_num; d++) {
- len += qemu_chr_write(s->chr, (uint8_t *)elem.out_sg[d].iov_base,
- elem.out_sg[d].iov_len);
- }
- virtqueue_push(vq, &elem, len);
- virtio_notify(vdev, vq);
- }
-}
-
-static void virtio_console_handle_input(VirtIODevice *vdev, VirtQueue *vq)
-{
-}
-
-static uint32_t virtio_console_get_features(VirtIODevice *vdev)
-{
- return 0;
-}
-
-static int vcon_can_read(void *opaque)
-{
- VirtIOConsole *s = (VirtIOConsole *) opaque;
-
- if (!virtio_queue_ready(s->ivq) ||
- !(s->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK) ||
- virtio_queue_empty(s->ivq))
- return 0;
-
- /* current implementations have a page sized buffer.
- * We fall back to a one byte per read if there is not enough room.
- * It would be cool to have a function that returns the available byte
- * instead of checking for a limit */
- if (virtqueue_avail_bytes(s->ivq, TARGET_PAGE_SIZE, 0))
- return TARGET_PAGE_SIZE;
- if (virtqueue_avail_bytes(s->ivq, 1, 0))
- return 1;
- return 0;
-}
-
-static void vcon_read(void *opaque, const uint8_t *buf, int size)
-{
- VirtIOConsole *s = (VirtIOConsole *) opaque;
- VirtQueueElement elem;
- int offset = 0;
-
- /* The current kernel implementation has only one outstanding input
- * buffer of PAGE_SIZE. Nevertheless, this function is prepared to
- * handle multiple buffers with multiple sg element for input */
- while (offset < size) {
- int i = 0;
- if (!virtqueue_pop(s->ivq, &elem))
- break;
- while (offset < size && i < elem.in_num) {
- int len = MIN(elem.in_sg[i].iov_len, size - offset);
- memcpy(elem.in_sg[i].iov_base, buf + offset, len);
- offset += len;
- i++;
- }
- virtqueue_push(s->ivq, &elem, size);
- }
- virtio_notify(&s->vdev, s->ivq);
-}
-
-static void vcon_event(void *opaque, int event)
-{
- /* we will ignore any event for the time being */
-}
-
-static void virtio_console_save(QEMUFile *f, void *opaque)
-{
- VirtIOConsole *s = opaque;
-
- virtio_save(&s->vdev, f);
-}
-
-static int virtio_console_load(QEMUFile *f, void *opaque, int version_id)
-{
- VirtIOConsole *s = opaque;
-
- if (version_id != 1)
- return -EINVAL;
-
- virtio_load(&s->vdev, f);
- return 0;
-}
-
-VirtIODevice *virtio_console_init(DeviceState *dev)
-{
- VirtIOConsole *s;
- s = (VirtIOConsole *)virtio_common_init("virtio-console",
- VIRTIO_ID_CONSOLE,
- 0, sizeof(VirtIOConsole));
- if (s == NULL)
- return NULL;
-
- s->vdev.get_features = virtio_console_get_features;
-
- s->ivq = virtio_add_queue(&s->vdev, 128, virtio_console_handle_input);
- s->ovq = virtio_add_queue(&s->vdev, 128, virtio_console_handle_output);
-
- s->chr = qdev_init_chardev(dev);
- qemu_chr_add_handlers(s->chr, vcon_can_read, vcon_read, vcon_event, s);
-
- register_savevm("virtio-console", -1, 1, virtio_console_save, virtio_console_load, s);
-
- return &s->vdev;
-}
diff --git a/hw/virtio-console.h b/hw/virtio-console.h
deleted file mode 100644
index 84d0717..0000000
--- a/hw/virtio-console.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Virtio Console Support
- *
- * Copyright IBM, Corp. 2008
- *
- * Authors:
- * Christian Ehrhardt <ehrhardt at linux.vnet.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- *
- */
-#ifndef _QEMU_VIRTIO_CONSOLE_H
-#define _QEMU_VIRTIO_CONSOLE_H
-
-/* The ID for virtio console */
-#define VIRTIO_ID_CONSOLE 3
-
-#endif
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 3594152..c1a1e4c 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -92,6 +92,8 @@ typedef struct {
uint32_t nvectors;
DriveInfo *dinfo;
NICConf nic;
+ /* Max. number of ports we can have for a the virtio-serial device */
+ uint32_t max_virtserial_ports;
} VirtIOPCIProxy;
/* virtio device */
@@ -481,7 +483,7 @@ static int virtio_blk_exit_pci(PCIDevice *pci_dev)
return virtio_exit_pci(pci_dev);
}
-static int virtio_console_init_pci(PCIDevice *pci_dev)
+static int virtio_serial_init_pci(PCIDevice *pci_dev)
{
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
VirtIODevice *vdev;
@@ -491,7 +493,7 @@ static int virtio_console_init_pci(PCIDevice *pci_dev)
proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */
proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER;
- vdev = virtio_console_init(&pci_dev->qdev);
+ vdev = virtio_serial_init(&pci_dev->qdev, proxy->max_virtserial_ports);
if (!vdev) {
return -1;
}
@@ -569,12 +571,15 @@ static PCIDeviceInfo virtio_info[] = {
},
.qdev.reset = virtio_pci_reset,
},{
- .qdev.name = "virtio-console-pci",
+ .qdev.name = "virtio-serial-pci",
+ .qdev.alias = "virtio-serial",
.qdev.size = sizeof(VirtIOPCIProxy),
- .init = virtio_console_init_pci,
+ .init = virtio_serial_init_pci,
.exit = virtio_exit_pci,
.qdev.props = (Property[]) {
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
+ DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, max_virtserial_ports,
+ 31),
DEFINE_PROP_END_OF_LIST(),
},
.qdev.reset = virtio_pci_reset,
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
new file mode 100644
index 0000000..5132c9c
--- /dev/null
+++ b/hw/virtio-serial-bus.c
@@ -0,0 +1,504 @@
+/*
+ * A bus for connecting virtio serial and console ports
+ *
+ * Copyright (C) 2009 Red Hat, Inc.
+ *
+ * Author(s):
+ * Amit Shah <amit.shah at redhat.com>
+ *
+ * Some earlier parts are:
+ * Copyright IBM, Corp. 2008
+ * authored by
+ * Christian Ehrhardt <ehrhardt at linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ */
+
+#include "monitor.h"
+#include "qemu-queue.h"
+#include "sysbus.h"
+#include "virtio-serial.h"
+
+/* The virtio-serial bus on top of which the ports will ride as devices */
+struct VirtIOSerialBus {
+ BusState qbus;
+
+ /* This is the parent device that provides the bus for ports. */
+ VirtIOSerial *vser;
+
+ /* The maximum number of ports that can ride on top of this bus */
+ uint32_t max_nr_ports;
+};
+
+struct VirtIOSerial {
+ VirtIODevice vdev;
+
+ VirtQueue *c_ivq, *c_ovq;
+ /* Arrays of ivqs and ovqs: one per port */
+ VirtQueue **ivqs, **ovqs;
+
+ VirtIOSerialBus *bus;
+
+ QTAILQ_HEAD(, VirtIOSerialPort) ports;
+ struct virtio_console_config config;
+};
+
+static VirtIOSerialPort *find_port_by_id(VirtIOSerial *vser, uint32_t id)
+{
+ VirtIOSerialPort *port;
+
+ QTAILQ_FOREACH(port, &vser->ports, next) {
+ if (port->id == id)
+ return port;
+ }
+ return NULL;
+}
+
+static VirtIOSerialPort *find_port_by_vq(VirtIOSerial *vser, VirtQueue *vq)
+{
+ VirtIOSerialPort *port;
+
+ QTAILQ_FOREACH(port, &vser->ports, next) {
+ if (port->ivq == vq || port->ovq == vq)
+ return port;
+ }
+ return NULL;
+}
+
+static size_t write_to_port(VirtIOSerialPort *port,
+ const uint8_t *buf, size_t size)
+{
+ VirtQueueElement elem;
+ VirtQueue *vq;
+ size_t offset = 0;
+ size_t len = 0;
+
+ vq = port->ivq;
+ if (!virtio_queue_ready(vq)) {
+ return 0;
+ }
+ if (!size) {
+ return 0;
+ }
+
+ while (offset < size) {
+ int i;
+
+ if (!virtqueue_pop(vq, &elem)) {
+ break;
+ }
+
+ for (i = 0; offset < size && i < elem.in_num; i++) {
+ len = MIN(elem.in_sg[i].iov_len, size - offset);
+
+ memcpy(elem.in_sg[i].iov_base, buf + offset, len);
+ offset += len;
+ }
+ virtqueue_push(vq, &elem, len);
+ }
+
+ virtio_notify(&port->vser->vdev, vq);
+ return offset;
+}
+
+static size_t send_control_msg(VirtIOSerialPort *port, void *buf, size_t len)
+{
+ VirtQueueElement elem;
+ VirtQueue *vq;
+ struct virtio_console_control *cpkt;
+
+ vq = port->vser->c_ivq;
+ if (!virtio_queue_ready(vq)) {
+ return 0;
+ }
+ if (!virtqueue_pop(vq, &elem)) {
+ return 0;
+ }
+
+ cpkt = (struct virtio_console_control *)buf;
+ stl_p(&cpkt->id, port->id);
+ memcpy(elem.in_sg[0].iov_base, buf, len);
+
+ virtqueue_push(vq, &elem, len);
+ virtio_notify(&port->vser->vdev, vq);
+ return len;
+}
+
+static size_t send_control_event(VirtIOSerialPort *port, uint16_t event,
+ uint16_t value)
+{
+ struct virtio_console_control cpkt;
+
+ stw_p(&cpkt.event, event);
+ stw_p(&cpkt.value, value);
+
+ return send_control_msg(port, &cpkt, sizeof(cpkt));
+}
+
+/* Functions for use inside qemu to open and read from/write to ports */
+int virtio_serial_open(VirtIOSerialPort *port)
+{
+ return 0;
+}
+
+int virtio_serial_close(VirtIOSerialPort *port)
+{
+ return 0;
+}
+
+/* Individual ports/apps call this function to write to the guest. */
+ssize_t virtio_serial_write(VirtIOSerialPort *port, const uint8_t *buf,
+ size_t size)
+{
+ return write_to_port(port, buf, size);
+}
+
+/*
+ * Readiness of the guest to accept data on a port.
+ * Returns max. data the guest can receive
+ */
+size_t virtio_serial_guest_ready(VirtIOSerialPort *port)
+{
+ VirtQueue *vq = port->ivq;
+
+ if (!virtio_queue_ready(vq) ||
+ !(port->vser->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK) ||
+ virtio_queue_empty(vq)) {
+ return 0;
+ }
+
+ if (virtqueue_avail_bytes(vq, 4096, 0)) {
+ return 4096;
+ }
+ if (virtqueue_avail_bytes(vq, 1, 0)) {
+ return 1;
+ }
+ return 0;
+}
+
+/* Guest wants to notify us of some event */
+static void handle_control_message(VirtIOSerial *vser, void *buf)
+{
+ struct VirtIOSerialPort *port;
+ struct virtio_console_control cpkt, *gcpkt;
+
+ gcpkt = buf;
+ port = find_port_by_id(vser, ldl_p(&gcpkt->id));
+ if (!port)
+ return;
+
+ cpkt.event = lduw_p(&gcpkt->event);
+ cpkt.value = lduw_p(&gcpkt->value);
+
+ switch(cpkt.event) {
+ case VIRTIO_CONSOLE_PORT_READY:
+ /*
+ * Now that we know the guest asked for the port name, we're
+ * sure the guest has initialised whatever state is necessary
+ * for this port. Now's a good time to let the guest know if
+ * this port is a console port so that the guest can hook it
+ * up to hvc.
+ */
+ if (port->is_console) {
+ send_control_event(port, VIRTIO_CONSOLE_CONSOLE_PORT, 1);
+ }
+ /*
+ * When the guest has asked us for this information it means
+ * the guest is all setup and has its virtqueues
+ * initialised. If some app is interested in knowing about
+ * this event, let it know.
+ */
+ if (port->info->guest_ready) {
+ port->info->guest_ready(port);
+ }
+ break;
+ }
+}
+
+static void control_in(VirtIODevice *vdev, VirtQueue *vq)
+{
+}
+
+static void control_out(VirtIODevice *vdev, VirtQueue *vq)
+{
+ VirtQueueElement elem;
+ VirtIOSerial *vser;
+
+ vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+
+ while (virtqueue_pop(vq, &elem)) {
+ handle_control_message(vser, elem.out_sg[0].iov_base);
+ virtqueue_push(vq, &elem, elem.out_sg[0].iov_len);
+ }
+ virtio_notify(vdev, vq);
+}
+
+/* Guest wrote something to some port. */
+static void handle_output(VirtIODevice *vdev, VirtQueue *vq)
+{
+ VirtIOSerial *vser;
+ VirtQueueElement elem;
+
+ vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+
+ while (virtqueue_pop(vq, &elem)) {
+ VirtIOSerialPort *port;
+ size_t ret;
+
+ port = find_port_by_vq(vser, vq);
+ if (!port) {
+ ret = 0;
+ goto next_buf;
+ }
+
+ /*
+ * A port may not have any handler registered for consuming the
+ * data that the guest sends or it may not have a chardev associated
+ * with it. Just ignore the data in that case.
+ */
+ if (!port->info->have_data) {
+ ret = 0;
+ goto next_buf;
+ }
+
+ /* The guest always sends only one sg */
+ ret = port->info->have_data(port, elem.out_sg[0].iov_base,
+ elem.out_sg[0].iov_len);
+
+ next_buf:
+ virtqueue_push(vq, &elem, ret);
+ }
+ virtio_notify(vdev, vq);
+}
+
+static void handle_input(VirtIODevice *vdev, VirtQueue *vq)
+{
+}
+
+static uint32_t get_features(VirtIODevice *vdev)
+{
+ return 1 << VIRTIO_CONSOLE_F_MULTIPORT;
+}
+
+/* Guest requested config info */
+static void get_config(VirtIODevice *vdev, uint8_t *config_data)
+{
+ VirtIOSerial *vser;
+
+ vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+ memcpy(config_data, &vser->config, sizeof(struct virtio_console_config));
+}
+
+static void set_config(VirtIODevice *vdev, const uint8_t *config_data)
+{
+ struct virtio_console_config config;
+
+ memcpy(&config, config_data, sizeof(config));
+}
+
+static void virtio_serial_save(QEMUFile *f, void *opaque)
+{
+ VirtIOSerial *s = opaque;
+
+ /* The virtio device */
+ virtio_save(&s->vdev, f);
+
+ /* The config space */
+ qemu_put_be16s(f, &s->config.cols);
+ qemu_put_be16s(f, &s->config.rows);
+ qemu_put_be32s(f, &s->config.nr_ports);
+}
+
+static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
+{
+ VirtIOSerial *s = opaque;
+
+ if (version_id > 2) {
+ return -EINVAL;
+ }
+ /* The virtio device */
+ virtio_load(&s->vdev, f);
+
+ if (version_id < 2) {
+ return 0;
+ }
+
+ /* The config space */
+ qemu_get_be16s(f, &s->config.cols);
+ qemu_get_be16s(f, &s->config.rows);
+ s->config.nr_ports = qemu_get_be32(f);
+
+ return 0;
+}
+
+static void virtser_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent);
+
+static struct BusInfo virtser_bus_info = {
+ .name = "virtio-serial-bus",
+ .size = sizeof(VirtIOSerialBus),
+ .print_dev = virtser_bus_dev_print,
+};
+
+static VirtIOSerialBus *virtser_bus_new(DeviceState *dev)
+{
+ VirtIOSerialBus *bus;
+
+ bus = FROM_QBUS(VirtIOSerialBus, qbus_create(&virtser_bus_info, dev, NULL));
+ bus->qbus.allow_hotplug = 1;
+
+ return bus;
+}
+
+static void virtser_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
+{
+ VirtIOSerialDevice *dev = DO_UPCAST(VirtIOSerialDevice, qdev, qdev);
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+
+ monitor_printf(mon, "%*s dev-prop-int: id: %u\n",
+ indent, "", port->id);
+}
+
+static int virtser_port_qdev_init(DeviceState *qdev, DeviceInfo *base)
+{
+ VirtIOSerialDevice *dev = DO_UPCAST(VirtIOSerialDevice, qdev, qdev);
+ VirtIOSerialPortInfo *info = DO_UPCAST(VirtIOSerialPortInfo, qdev, base);
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtIOSerialBus *bus = DO_UPCAST(VirtIOSerialBus, qbus, qdev->parent_bus);
+ int ret;
+ bool plugging_port0;
+
+ port->vser = bus->vser;
+
+ /*
+ * Is the first console port we're seeing? If so, put it up at
+ * location 0. This is done for backward compatibility (old
+ * kernel, new qemu).
+ */
+ plugging_port0 = port->is_console && !find_port_by_id(port->vser, 0);
+
+ if (port->vser->config.nr_ports == bus->max_nr_ports && !plugging_port0) {
+ qemu_error("virtio-serial-bus: Maximum device limit reached\n");
+ return -1;
+ }
+ dev->info = info;
+
+ ret = info->init(dev);
+ if (ret) {
+ return ret;
+ }
+
+ port->id = plugging_port0 ? 0 : port->vser->config.nr_ports++;
+
+ QTAILQ_INSERT_TAIL(&port->vser->ports, port, next);
+ port->ivq = port->vser->ivqs[port->id];
+ port->ovq = port->vser->ovqs[port->id];
+
+ /* Send an update to the guest about this new port added */
+ virtio_notify_config(&port->vser->vdev);
+
+ return ret;
+}
+
+static int virtser_port_qdev_exit(DeviceState *qdev)
+{
+ VirtIOSerialDevice *dev = DO_UPCAST(VirtIOSerialDevice, qdev, qdev);
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtIOSerial *vser = port->vser;
+
+ /*
+ * Don't decrement nr_ports here; thus we keep a linearly
+ * increasing port id. Not utilising an id again saves us a couple
+ * of complications:
+ *
+ * - Not having to bother about sending the port id to the guest
+ * kernel on hotplug or on addition of new ports; the guest can
+ * also linearly increment the port number. This is preferable
+ * because the config space won't have the need to store a
+ * ports_map.
+ *
+ * - Extra state to be stored for all the "holes" that got created
+ * so that we keep filling in the ids from the least available
+ * index.
+ *
+ * When such a functionality is desired, a control message to add
+ * a port can be introduced.
+ */
+ QTAILQ_REMOVE(&vser->ports, port, next);
+
+ if (port->info->exit)
+ port->info->exit(dev);
+
+ return 0;
+}
+
+void virtio_serial_port_qdev_register(VirtIOSerialPortInfo *info)
+{
+ info->qdev.init = virtser_port_qdev_init;
+ info->qdev.bus_info = &virtser_bus_info;
+ info->qdev.exit = virtser_port_qdev_exit;
+ info->qdev.unplug = qdev_simple_unplug_cb;
+ qdev_register(&info->qdev);
+}
+
+VirtIODevice *virtio_serial_init(DeviceState *dev, uint32_t max_nr_ports)
+{
+ VirtIOSerial *vser;
+ VirtIODevice *vdev;
+ uint32_t i;
+
+ if (!max_nr_ports)
+ return NULL;
+
+ vdev = virtio_common_init("virtio-serial", VIRTIO_ID_CONSOLE,
+ sizeof(struct virtio_console_config),
+ sizeof(VirtIOSerial));
+
+ vser = DO_UPCAST(VirtIOSerial, vdev, vdev);
+
+ /* Spawn a new virtio-serial bus on which the ports will ride as devices */
+ vser->bus = virtser_bus_new(dev);
+ vser->bus->vser = vser;
+ QTAILQ_INIT(&vser->ports);
+
+ vser->bus->max_nr_ports = max_nr_ports;
+ vser->ivqs = qemu_malloc(max_nr_ports * sizeof(VirtQueue *));
+ vser->ovqs = qemu_malloc(max_nr_ports * sizeof(VirtQueue *));
+
+ /* Add a queue for host to guest transfers for port 0 (backward compat) */
+ vser->ivqs[0] = virtio_add_queue(vdev, 128, handle_input);
+ /* Add a queue for guest to host transfers for port 0 (backward compat) */
+ vser->ovqs[0] = virtio_add_queue(vdev, 128, handle_output);
+
+ /* control queue: host to guest */
+ vser->c_ivq = virtio_add_queue(vdev, 16, control_in);
+ /* control queue: guest to host */
+ vser->c_ovq = virtio_add_queue(vdev, 16, control_out);
+
+ for (i = 1; i < vser->bus->max_nr_ports; i++) {
+ /* Add a per-port queue for host to guest transfers */
+ vser->ivqs[i] = virtio_add_queue(vdev, 128, handle_input);
+ /* Add a per-per queue for guest to host transfers */
+ vser->ovqs[i] = virtio_add_queue(vdev, 128, handle_output);
+ }
+
+ vser->config.max_nr_ports = max_nr_ports;
+ /*
+ * Reserve location 0 for a console port for backward compat
+ * (old kernel, new qemu)
+ */
+ vser->config.nr_ports = 1;
+
+ vser->vdev.get_features = get_features;
+ vser->vdev.get_config = get_config;
+ vser->vdev.set_config = set_config;
+
+ /*
+ * Register for the savevm section with the virtio-console name
+ * to preserve backward compat
+ */
+ register_savevm("virtio-console", -1, 2, virtio_serial_save,
+ virtio_serial_load, vser);
+
+ return vdev;
+}
diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c
new file mode 100644
index 0000000..1dc031e
--- /dev/null
+++ b/hw/virtio-serial.c
@@ -0,0 +1,111 @@
+/*
+ * Virtio Console and Generic Serial Port Devices
+ *
+ * Copyright Red Hat, Inc. 2009
+ *
+ * Authors:
+ * Amit Shah <amit.shah at redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ */
+
+#include "qemu-char.h"
+#include "virtio-serial.h"
+
+typedef struct VirtConsole {
+ VirtIOSerialPort port;
+ CharDriverState *chr;
+} VirtConsole;
+
+
+/* Callback function that's called when the guest sends us data */
+static size_t flush_buf(VirtIOSerialPort *port, const uint8_t *buf, size_t len)
+{
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+ ssize_t ret;
+
+ ret = qemu_chr_write(vcon->chr, buf, len);
+
+ return ret < 0 ? 0 : ret;
+}
+
+/* Readiness of the guest to accept data on a port */
+static int chr_can_read(void *opaque)
+{
+ VirtConsole *vcon = opaque;
+
+ return virtio_serial_guest_ready(&vcon->port);
+}
+
+/* Send data from a char device over to the guest */
+static void chr_read(void *opaque, const uint8_t *buf, int size)
+{
+ VirtConsole *vcon = opaque;
+
+ virtio_serial_write(&vcon->port, buf, size);
+}
+
+static void chr_event(void *opaque, int event)
+{
+ VirtConsole *vcon = opaque;
+
+ switch (event) {
+ case CHR_EVENT_OPENED: {
+ virtio_serial_open(&vcon->port);
+ break;
+ }
+ case CHR_EVENT_CLOSED:
+ virtio_serial_close(&vcon->port);
+ break;
+ }
+}
+
+/* Virtio Console Ports */
+static int virtconsole_initfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ port->info = dev->info;
+
+ port->is_console = true;
+
+ if (vcon->chr) {
+ qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
+ vcon);
+ port->info->have_data = flush_buf;
+ }
+ return 0;
+}
+
+static int virtconsole_exitfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ if (vcon->chr) {
+ port->info->have_data = NULL;
+ qemu_chr_close(vcon->chr);
+ }
+
+ return 0;
+}
+
+static VirtIOSerialPortInfo virtconsole_info = {
+ .qdev.name = "virtconsole",
+ .qdev.size = sizeof(VirtConsole),
+ .init = virtconsole_initfn,
+ .exit = virtconsole_exitfn,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console, 1),
+ DEFINE_PROP_CHR("chardev", VirtConsole, chr),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void virtconsole_register(void)
+{
+ virtio_serial_port_qdev_register(&virtconsole_info);
+}
+device_init(virtconsole_register)
diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h
new file mode 100644
index 0000000..fe8e357
--- /dev/null
+++ b/hw/virtio-serial.h
@@ -0,0 +1,158 @@
+/*
+ * Virtio Serial / Console Support
+ *
+ * Copyright IBM, Corp. 2008
+ * Copyright Red Hat, Inc. 2009
+ *
+ * Authors:
+ * Christian Ehrhardt <ehrhardt at linux.vnet.ibm.com>
+ * Amit Shah <amit.shah at redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+#ifndef _QEMU_VIRTIO_SERIAL_H
+#define _QEMU_VIRTIO_SERIAL_H
+
+#include <stdbool.h>
+#include "qdev.h"
+#include "virtio.h"
+
+/* == Interface shared between the guest kernel and qemu == */
+
+/* The Virtio ID for virtio console / serial ports */
+#define VIRTIO_ID_CONSOLE 3
+
+/* Features supported */
+#define VIRTIO_CONSOLE_F_MULTIPORT 1
+
+struct virtio_console_config {
+ /*
+ * These two fields are used by VIRTIO_CONSOLE_F_SIZE which
+ * isn't implemented here yet
+ */
+ uint16_t cols;
+ uint16_t rows;
+
+ uint32_t max_nr_ports;
+ uint32_t nr_ports;
+} __attribute__((packed));
+
+struct virtio_console_control {
+ uint32_t id; /* Port number */
+ uint16_t event; /* The kind of control event (see below) */
+ uint16_t value; /* Extra information for the key */
+};
+
+/* Some events for the internal messages (control packets) */
+#define VIRTIO_CONSOLE_PORT_READY 0
+#define VIRTIO_CONSOLE_CONSOLE_PORT 1
+#define VIRTIO_CONSOLE_RESIZE 2
+
+/* == In-qemu interface == */
+
+typedef struct VirtIOSerial VirtIOSerial;
+typedef struct VirtIOSerialBus VirtIOSerialBus;
+typedef struct VirtIOSerialPort VirtIOSerialPort;
+typedef struct VirtIOSerialPortInfo VirtIOSerialPortInfo;
+
+typedef struct VirtIOSerialDevice {
+ DeviceState qdev;
+ VirtIOSerialPortInfo *info;
+} VirtIOSerialDevice;
+
+/*
+ * This is the state that's shared between all the ports. Some of the
+ * state is configurable via command-line options. Some of it can be
+ * set by individual devices in their initfn routines. Some of the
+ * state is set by the generic qdev device init routine.
+ */
+struct VirtIOSerialPort {
+ DeviceState dev;
+ VirtIOSerialPortInfo *info;
+
+ QTAILQ_ENTRY(VirtIOSerialPort) next;
+
+ /*
+ * This field gives us the virtio device as well as the qdev bus
+ * that we are associated with
+ */
+ VirtIOSerial *vser;
+
+ VirtQueue *ivq, *ovq;
+
+ /*
+ * This id helps identify ports between the guest and the host.
+ * The guest sends a "header" with this id with each data packet
+ * that it sends and the host can then find out which associated
+ * device to send out this data to
+ */
+ uint32_t id;
+
+ /* Identify if this is a port that binds with hvc in the guest */
+ uint8_t is_console;
+};
+
+struct VirtIOSerialPortInfo {
+ DeviceInfo qdev;
+ /*
+ * The per-port (or per-app) init function that's called when a
+ * new device is found on the bus.
+ */
+ int (*init)(VirtIOSerialDevice *dev);
+ /*
+ * Per-port exit function that's called when a port gets
+ * hot-unplugged or removed.
+ */
+ int (*exit)(VirtIOSerialDevice *dev);
+
+ /* Callbacks for guest events */
+ /* Guest opened device. */
+ void (*guest_open)(VirtIOSerialPort *port);
+ /* Guest closed device. */
+ void (*guest_close)(VirtIOSerialPort *port);
+
+ /* Guest is now ready to accept data (virtqueues set up). */
+ void (*guest_ready)(VirtIOSerialPort *port);
+
+ /*
+ * Guest wrote some data to the port. This data is handed over to
+ * the app via this callback. The app should return the number of
+ * bytes it successfully consumed.
+ */
+ size_t (*have_data)(VirtIOSerialPort *port, const uint8_t *buf, size_t len);
+};
+
+/* Interface to the virtio-serial bus */
+
+/*
+ * Individual ports/apps should call this function to register the port
+ * with the virtio-serial bus
+ */
+void virtio_serial_port_qdev_register(VirtIOSerialPortInfo *info);
+
+/*
+ * Open a connection to the port
+ * Returns 0 on success (always).
+ */
+int virtio_serial_open(VirtIOSerialPort *port);
+
+/*
+ * Close the connection to the port
+ * Returns 0 on success (always).
+ */
+int virtio_serial_close(VirtIOSerialPort *port);
+
+/*
+ * Send data to Guest
+ */
+ssize_t virtio_serial_write(VirtIOSerialPort *port, const uint8_t *buf,
+ size_t size);
+
+/*
+ * Query whether a guest is ready to receive data.
+ */
+size_t virtio_serial_guest_ready(VirtIOSerialPort *port);
+
+#endif
diff --git a/hw/virtio.h b/hw/virtio.h
index 051910a..a574928 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -171,7 +171,7 @@ void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
/* Base devices. */
VirtIODevice *virtio_blk_init(DeviceState *dev, DriveInfo *dinfo);
VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf);
-VirtIODevice *virtio_console_init(DeviceState *dev);
+VirtIODevice *virtio_serial_init(DeviceState *dev, uint32_t max_nr_ports);
VirtIODevice *virtio_balloon_init(DeviceState *dev);
void virtio_net_exit(VirtIODevice *vdev);
diff --git a/qemu-options.hx b/qemu-options.hx
index ca73ba5..173b1ec 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1874,6 +1874,10 @@ DEF("virtioconsole", HAS_ARG, QEMU_OPTION_virtiocon, \
STEXI
@item -virtioconsole @var{c}
Set virtio console.
+
+This option is maintained for backward compatibility.
+
+Please use @code{-device virtconsole} for the new way of invocation.
ETEXI
DEF("show-cursor", 0, QEMU_OPTION_show_cursor, \
diff --git a/sysemu.h b/sysemu.h
index a545a2b..ff97786 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -237,12 +237,6 @@ extern CharDriverState *serial_hds[MAX_SERIAL_PORTS];
extern CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
-/* virtio consoles */
-
-#define MAX_VIRTIO_CONSOLES 1
-
-extern CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
-
#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
#ifdef HAS_AUDIO
diff --git a/vl.c b/vl.c
index c9d46de..a479ef3 100644
--- a/vl.c
+++ b/vl.c
@@ -175,6 +175,8 @@ int main(int argc, char **argv)
#define DEFAULT_RAM_SIZE 128
+#define MAX_VIRTIO_CONSOLES 1
+
static const char *data_dir;
const char *bios_name = NULL;
/* Note: drives_table[MAX_DRIVES] is a dummy block driver if none available
@@ -300,8 +302,9 @@ static struct {
{ .driver = "isa-parallel", .flag = &default_parallel },
{ .driver = "isa-fdc", .flag = &default_floppy },
{ .driver = "ide-drive", .flag = &default_cdrom },
- { .driver = "virtio-console-pci", .flag = &default_virtcon },
- { .driver = "virtio-console-s390", .flag = &default_virtcon },
+ { .driver = "virtio-serial-pci", .flag = &default_virtcon },
+ { .driver = "virtio-serial-s390", .flag = &default_virtcon },
+ { .driver = "virtio-serial", .flag = &default_virtcon },
{ .driver = "VGA", .flag = &default_vga },
{ .driver = "cirrus-vga", .flag = &default_vga },
{ .driver = "vmware-svga", .flag = &default_vga },
@@ -4885,6 +4888,7 @@ static int virtcon_parse(const char *devname)
{
static int index = 0;
char label[32];
+ QemuOpts *bus_opts, *dev_opts;
if (strcmp(devname, "none") == 0)
return 0;
@@ -4892,6 +4896,13 @@ static int virtcon_parse(const char *devname)
fprintf(stderr, "qemu: too many virtio consoles\n");
exit(1);
}
+
+ bus_opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
+ qemu_opt_set(bus_opts, "driver", "virtio-serial");
+
+ dev_opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
+ qemu_opt_set(dev_opts, "driver", "virtconsole");
+
snprintf(label, sizeof(label), "virtcon%d", index);
virtcon_hds[index] = qemu_chr_open(label, devname, NULL);
if (!virtcon_hds[index]) {
@@ -4899,6 +4910,8 @@ static int virtcon_parse(const char *devname)
devname, strerror(errno));
return -1;
}
+ qemu_opt_set(dev_opts, "chardev", label);
+
index++;
return 0;
}
--
1.6.2.5
qemu-virtio-serial-Add-a-virtserialport-device-for-gen.patch:
virtio-serial.c | 35 ++++++++++++++++++++++++++++++++++-
1 file changed, 34 insertions(+), 1 deletion(-)
--- NEW FILE qemu-virtio-serial-Add-a-virtserialport-device-for-gen.patch ---
>From fcb66d7ac2271bcf0b46d6b1ae2d3db38e78bf2b Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:56 +0530
Subject: [PATCH 6/9] virtio-serial: Add a 'virtserialport' device for generic serial port support
This commit adds a simple chardev-based serial port. Any data the guest
sends is forwarded to the chardev and vice-versa.
Sample uses for such a device can be obtaining info from the guest like
the file systems used, apps installed, etc. for offline usage and
logged-in users, clipboard copy-paste, etc. for online usage.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
hw/virtio-serial.c | 34 ++++++++++++++++++++++++++++++++++
1 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c
index 9c2c93c..bd44ec6 100644
--- a/hw/virtio-serial.c
+++ b/hw/virtio-serial.c
@@ -110,3 +110,37 @@ static void virtconsole_register(void)
virtio_serial_port_qdev_register(&virtconsole_info);
}
device_init(virtconsole_register)
+
+/* Generic Virtio Serial Ports */
+static int virtserialport_initfn(VirtIOSerialDevice *dev)
+{
+ VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
+ VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port);
+
+ port->info = dev->info;
+
+ if (vcon->chr) {
+ qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event,
+ vcon);
+ port->info->have_data = flush_buf;
+ }
+ return 0;
+}
+
+static VirtIOSerialPortInfo virtserialport_info = {
+ .qdev.name = "virtserialport",
+ .qdev.size = sizeof(VirtConsole),
+ .init = virtserialport_initfn,
+ .exit = virtconsole_exitfn,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_CHR("chardev", VirtConsole, chr),
+ DEFINE_PROP_STRING("name", VirtConsole, port.name),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void virtserialport_register(void)
+{
+ virtio_serial_port_qdev_register(&virtserialport_info);
+}
+device_init(virtserialport_register)
--
1.6.2.5
qemu-virtio-serial-Use-MSI-vectors-for-port-virtqueues.patch:
virtio-pci.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- NEW FILE qemu-virtio-serial-Use-MSI-vectors-for-port-virtqueues.patch ---
>From 43fa8533e10c478825952d489269d55e5c652c1a Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:58 +0530
Subject: [PATCH 8/9] virtio-serial: Use MSI vectors for port virtqueues
This commit enables the use of MSI interrupts for virtqueue
notifications for ports. We use nr_ports + 1 (for control channel) msi
entries for the ports, as only the in_vq operations need an interrupt on
the guest.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
hw/virtio-pci.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index c1a1e4c..4451a63 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -497,10 +497,13 @@ static int virtio_serial_init_pci(PCIDevice *pci_dev)
if (!vdev) {
return -1;
}
+ vdev->nvectors = proxy->nvectors ? proxy->nvectors
+ : proxy->max_virtserial_ports + 1;
virtio_init_pci(proxy, vdev,
PCI_VENDOR_ID_REDHAT_QUMRANET,
PCI_DEVICE_ID_VIRTIO_CONSOLE,
proxy->class_code, 0x00);
+ proxy->nvectors = vdev->nvectors;
return 0;
}
@@ -577,6 +580,7 @@ static PCIDeviceInfo virtio_info[] = {
.init = virtio_serial_init_pci,
.exit = virtio_exit_pci,
.qdev.props = (Property[]) {
+ DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 0),
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, max_virtserial_ports,
31),
--
1.6.2.5
qemu-virtio-serial-bus-Add-a-port-name-property-for-po.patch:
virtio-serial-bus.c | 17 +++++++++++++++++
virtio-serial.c | 1 +
virtio-serial.h | 9 ++++++++-
3 files changed, 26 insertions(+), 1 deletion(-)
--- NEW FILE qemu-virtio-serial-bus-Add-a-port-name-property-for-po.patch ---
>From ed4daf8c7722562ec05e83ec98a4d4d8adf20f7f Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:54 +0530
Subject: [PATCH 4/9] virtio-serial-bus: Add a port 'name' property for port discovery in guests
The port 'id' or number is internal state between the guest kernel and
our bus implementation. This is invocation-dependent and isn't part of
the guest-host ABI.
To correcly enumerate and map ports between the host and the guest, the
'name' property is used.
Example:
-device virtserialport,name=org.qemu.port.0
This invocation will get us a char device in the guest at:
/dev/virtio-ports/org.qemu.port.0
which can be a symlink to
/dev/vport0p3
This 'name' property is exposed by the guest kernel in a sysfs
attribute:
/sys/kernel/virtio-ports/vport0p3/name
A simple udev script can pick up this name and create the symlink
mentioned above.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
hw/virtio-serial-bus.c | 17 +++++++++++++++++
hw/virtio-serial.c | 1 +
hw/virtio-serial.h | 8 ++++++++
3 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 9af21df..6d69c56 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -204,6 +204,8 @@ static void handle_control_message(VirtIOSerial *vser, void *buf)
{
struct VirtIOSerialPort *port;
struct virtio_console_control cpkt, *gcpkt;
+ uint8_t *buffer;
+ size_t buffer_len;
gcpkt = buf;
port = find_port_by_id(vser, ldl_p(&gcpkt->id));
@@ -226,6 +228,21 @@ static void handle_control_message(VirtIOSerial *vser, void *buf)
send_control_event(port, VIRTIO_CONSOLE_CONSOLE_PORT, 1);
}
+ if (port->name) {
+ stw_p(&cpkt.event, VIRTIO_CONSOLE_PORT_NAME);
+ stw_p(&cpkt.value, 1);
+
+ buffer_len = sizeof(cpkt) + strlen(port->name) + 1;
+ buffer = qemu_malloc(buffer_len);
+
+ memcpy(buffer, &cpkt, sizeof(cpkt));
+ memcpy(buffer + sizeof(cpkt), port->name, strlen(port->name));
+ buffer[buffer_len - 1] = 0;
+
+ send_control_msg(port, buffer, buffer_len);
+ qemu_free(buffer);
+ }
+
if (port->host_connected) {
send_control_event(port, VIRTIO_CONSOLE_PORT_OPEN, 1);
}
diff --git a/hw/virtio-serial.c b/hw/virtio-serial.c
index 1dc031e..9c2c93c 100644
--- a/hw/virtio-serial.c
+++ b/hw/virtio-serial.c
@@ -100,6 +100,7 @@ static VirtIOSerialPortInfo virtconsole_info = {
.qdev.props = (Property[]) {
DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console, 1),
DEFINE_PROP_CHR("chardev", VirtConsole, chr),
+ DEFINE_PROP_STRING("name", VirtConsole, port.name),
DEFINE_PROP_END_OF_LIST(),
},
};
diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h
index d9c7acb..28ea7da 100644
--- a/hw/virtio-serial.h
+++ b/hw/virtio-serial.h
@@ -50,6 +50,7 @@ struct virtio_console_control {
#define VIRTIO_CONSOLE_CONSOLE_PORT 1
#define VIRTIO_CONSOLE_RESIZE 2
#define VIRTIO_CONSOLE_PORT_OPEN 3
+#define VIRTIO_CONSOLE_PORT_NAME 4
/* == In-qemu interface == */
@@ -84,6 +85,13 @@ struct VirtIOSerialPort {
VirtQueue *ivq, *ovq;
/*
+ * This name is sent to the guest and exported via sysfs.
+ * The guest could create symlinks based on this information.
+ * The name is in the reverse fqdn format, like org.qemu.console.0
+ */
+ char *name;
+
+ /*
* This id helps identify ports between the guest and the host.
* The guest sends a "header" with this id with each data packet
* that it sends and the host can then find out which associated
--
1.6.2.5
qemu-virtio-serial-bus-Add-ability-to-hot-unplug-ports.patch:
virtio-serial-bus.c | 2 ++
virtio-serial.h | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
--- NEW FILE qemu-virtio-serial-bus-Add-ability-to-hot-unplug-ports.patch ---
>From c101ff585d5b156a1f3461015a9acd73f15a45f6 Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:55 +0530
Subject: [PATCH 5/9] virtio-serial-bus: Add ability to hot-unplug ports
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
hw/virtio-serial-bus.c | 2 ++
hw/virtio-serial.h | 1 +
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 6d69c56..037864f 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -517,6 +517,8 @@ static int virtser_port_qdev_exit(DeviceState *qdev)
VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, &dev->qdev);
VirtIOSerial *vser = port->vser;
+ send_control_event(port, VIRTIO_CONSOLE_PORT_REMOVE, 1);
+
/*
* Don't decrement nr_ports here; thus we keep a linearly
* increasing port id. Not utilising an id again saves us a couple
diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h
index 28ea7da..f297b00 100644
--- a/hw/virtio-serial.h
+++ b/hw/virtio-serial.h
@@ -51,6 +51,7 @@ struct virtio_console_control {
#define VIRTIO_CONSOLE_RESIZE 2
#define VIRTIO_CONSOLE_PORT_OPEN 3
#define VIRTIO_CONSOLE_PORT_NAME 4
+#define VIRTIO_CONSOLE_PORT_REMOVE 5
/* == In-qemu interface == */
--
1.6.2.5
qemu-virtio-serial-bus-Maintain-guest-and-host-port-open.patch:
virtio-serial-bus.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++
virtio-serial.h | 7 +++
2 files changed, 100 insertions(+), 1 deletion(-)
--- NEW FILE qemu-virtio-serial-bus-Maintain-guest-and-host-port-open.patch ---
>From 4945aee74f494cc8a17ce1634b5200eb9ee227d2 Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah at redhat.com>
Date: Wed, 20 Jan 2010 00:36:53 +0530
Subject: [PATCH 3/9] virtio-serial-bus: Maintain guest and host port open/close state
Via control channel messages, the guest can tell us whether a port got
opened or closed. Similarly, we can also indicate to the guest of host
port open/close events.
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Anthony Liguori <aliguori at us.ibm.com>
---
hw/virtio-serial-bus.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++
hw/virtio-serial.h | 6 +++
2 files changed, 100 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 5132c9c..9af21df 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -66,6 +66,11 @@ static VirtIOSerialPort *find_port_by_vq(VirtIOSerial *vser, VirtQueue *vq)
return NULL;
}
+static bool use_multiport(VirtIOSerial *vser)
+{
+ return vser->vdev.features & (1 << VIRTIO_CONSOLE_F_MULTIPORT);
+}
+
static size_t write_to_port(VirtIOSerialPort *port,
const uint8_t *buf, size_t size)
{
@@ -139,11 +144,22 @@ static size_t send_control_event(VirtIOSerialPort *port, uint16_t event,
/* Functions for use inside qemu to open and read from/write to ports */
int virtio_serial_open(VirtIOSerialPort *port)
{
+ /* Don't allow opening an already-open port */
+ if (port->host_connected) {
+ return 0;
+ }
+ /* Send port open notification to the guest */
+ port->host_connected = true;
+ send_control_event(port, VIRTIO_CONSOLE_PORT_OPEN, 1);
+
return 0;
}
int virtio_serial_close(VirtIOSerialPort *port)
{
+ port->host_connected = false;
+ send_control_event(port, VIRTIO_CONSOLE_PORT_OPEN, 0);
+
return 0;
}
@@ -151,6 +167,9 @@ int virtio_serial_close(VirtIOSerialPort *port)
ssize_t virtio_serial_write(VirtIOSerialPort *port, const uint8_t *buf,
size_t size)
{
+ if (!port || !port->host_connected || !port->guest_connected) {
+ return 0;
+ }
return write_to_port(port, buf, size);
}
@@ -167,6 +186,9 @@ size_t virtio_serial_guest_ready(VirtIOSerialPort *port)
virtio_queue_empty(vq)) {
return 0;
}
+ if (use_multiport(port->vser) && !port->guest_connected) {
+ return 0;
+ }
if (virtqueue_avail_bytes(vq, 4096, 0)) {
return 4096;
@@ -203,6 +225,11 @@ static void handle_control_message(VirtIOSerial *vser, void *buf)
if (port->is_console) {
send_control_event(port, VIRTIO_CONSOLE_CONSOLE_PORT, 1);
}
+
+ if (port->host_connected) {
+ send_control_event(port, VIRTIO_CONSOLE_PORT_OPEN, 1);
+ }
+
/*
* When the guest has asked us for this information it means
* the guest is all setup and has its virtqueues
@@ -213,6 +240,19 @@ static void handle_control_message(VirtIOSerial *vser, void *buf)
port->info->guest_ready(port);
}
break;
+
+ case VIRTIO_CONSOLE_PORT_OPEN:
+ port->guest_connected = cpkt.value;
+ if (cpkt.value && port->info->guest_open) {
+ /* Send the guest opened notification if an app is interested */
+ port->info->guest_open(port);
+ }
+
+ if (!cpkt.value && port->info->guest_close) {
+ /* Send the guest closed notification if an app is interested */
+ port->info->guest_close(port);
+ }
+ break;
}
}
@@ -300,6 +340,8 @@ static void set_config(VirtIODevice *vdev, const uint8_t *config_data)
static void virtio_serial_save(QEMUFile *f, void *opaque)
{
VirtIOSerial *s = opaque;
+ VirtIOSerialPort *port;
+ uint32_t nr_active_ports;
/* The virtio device */
virtio_save(&s->vdev, f);
@@ -308,15 +350,41 @@ static void virtio_serial_save(QEMUFile *f, void *opaque)
qemu_put_be16s(f, &s->config.cols);
qemu_put_be16s(f, &s->config.rows);
qemu_put_be32s(f, &s->config.nr_ports);
+
+ /* Items in struct VirtIOSerial */
+
+ /* Do this because we might have hot-unplugged some ports */
+ nr_active_ports = 0;
+ QTAILQ_FOREACH(port, &s->ports, next)
+ nr_active_ports++;
+
+ qemu_put_be32s(f, &nr_active_ports);
+
+ /*
+ * Items in struct VirtIOSerialPort.
+ */
+ QTAILQ_FOREACH(port, &s->ports, next) {
+ /*
+ * We put the port number because we may not have an active
+ * port at id 0 that's reserved for a console port, or in case
+ * of ports that might have gotten unplugged
+ */
+ qemu_put_be32s(f, &port->id);
+ qemu_put_byte(f, port->guest_connected);
+ }
}
static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
{
VirtIOSerial *s = opaque;
+ VirtIOSerialPort *port;
+ uint32_t nr_active_ports;
+ unsigned int i;
if (version_id > 2) {
return -EINVAL;
}
+
/* The virtio device */
virtio_load(&s->vdev, f);
@@ -329,6 +397,20 @@ static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_be16s(f, &s->config.rows);
s->config.nr_ports = qemu_get_be32(f);
+ /* Items in struct VirtIOSerial */
+
+ qemu_get_be32s(f, &nr_active_ports);
+
+ /* Items in struct VirtIOSerialPort */
+ for (i = 0; i < nr_active_ports; i++) {
+ uint32_t id;
+
+ id = qemu_get_be32(f);
+ port = find_port_by_id(s, id);
+
+ port->guest_connected = qemu_get_byte(f);
+ }
+
return 0;
}
@@ -357,6 +439,10 @@ static void virtser_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
monitor_printf(mon, "%*s dev-prop-int: id: %u\n",
indent, "", port->id);
+ monitor_printf(mon, "%*s dev-prop-int: guest_connected: %d\n",
+ indent, "", port->guest_connected);
+ monitor_printf(mon, "%*s dev-prop-int: host_connected: %d\n",
+ indent, "", port->host_connected);
}
static int virtser_port_qdev_init(DeviceState *qdev, DeviceInfo *base)
@@ -390,6 +476,14 @@ static int virtser_port_qdev_init(DeviceState *qdev, DeviceInfo *base)
port->id = plugging_port0 ? 0 : port->vser->config.nr_ports++;
+ if (!use_multiport(port->vser)) {
+ /*
+ * Allow writes to guest in this case; we have no way of
+ * knowing if a guest port is connected.
+ */
+ port->guest_connected = true;
+ }
+
QTAILQ_INSERT_TAIL(&port->vser->ports, port, next);
port->ivq = port->vser->ivqs[port->id];
port->ovq = port->vser->ovqs[port->id];
diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h
index fe8e357..d9c7acb 100644
--- a/hw/virtio-serial.h
+++ b/hw/virtio-serial.h
@@ -49,6 +49,7 @@ struct virtio_console_control {
#define VIRTIO_CONSOLE_PORT_READY 0
#define VIRTIO_CONSOLE_CONSOLE_PORT 1
#define VIRTIO_CONSOLE_RESIZE 2
+#define VIRTIO_CONSOLE_PORT_OPEN 3
/* == In-qemu interface == */
@@ -92,6 +93,11 @@ struct VirtIOSerialPort {
/* Identify if this is a port that binds with hvc in the guest */
uint8_t is_console;
+
+ /* Is the corresponding guest device open? */
+ bool guest_connected;
+ /* Is this device open for IO on the host? */
+ bool host_connected;
};
struct VirtIOSerialPortInfo {
--
1.6.2.5
Index: qemu.spec
===================================================================
RCS file: /cvs/pkgs/rpms/qemu/devel/qemu.spec,v
retrieving revision 1.153
retrieving revision 1.154
diff -u -p -r1.153 -r1.154
--- qemu.spec 25 Jan 2010 18:41:08 -0000 1.153
+++ qemu.spec 27 Jan 2010 18:10:32 -0000 1.154
@@ -1,7 +1,7 @@
Summary: QEMU is a FAST! processor emulator
Name: qemu
Version: 0.12.2
-Release: 1%{?dist}
+Release: 2%{?dist}
# Epoch because we pushed a qemu-1.0 package
Epoch: 2
License: GPLv2+ and LGPLv2+ and BSD
@@ -24,6 +24,18 @@ Source6: ksmtuned.init
Source7: ksmtuned
Source8: ksmtuned.conf
+# virtio-console changes for the F13 VirtioSerial feature
+Patch01: qemu-virtio-Remove-duplicate-macro-definition-for-max.-v.patch
+Patch02: qemu-virtio-console-qdev-conversion-new-virtio-serial-b.patch
+Patch03: qemu-virtio-serial-bus-Maintain-guest-and-host-port-open.patch
+Patch04: qemu-virtio-serial-bus-Add-a-port-name-property-for-po.patch
+Patch05: qemu-virtio-serial-bus-Add-ability-to-hot-unplug-ports.patch
+Patch06: qemu-virtio-serial-Add-a-virtserialport-device-for-gen.patch
+Patch07: qemu-Move-virtio-serial-to-Makefile.objs.patch
+Patch08: qemu-virtio-serial-Use-MSI-vectors-for-port-virtqueues.patch
+Patch09: qemu-virtio-console-Rename-virtio-serial.c-back-to-virti.patch
+
+
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildRequires: SDL-devel zlib-devel which texi2html gnutls-devel cyrus-sasl-devel
BuildRequires: rsync dev86 iasl
@@ -211,6 +223,16 @@ such as kvmtrace and kvm_stat.
%prep
%setup -q -n qemu-kvm-%{version}
+%patch01 -p1
+%patch02 -p1
+%patch03 -p1
+%patch04 -p1
+%patch05 -p1
+%patch06 -p1
+%patch07 -p1
+%patch08 -p1
+%patch09 -p1
+
%build
# --build-id option is used fedora 8 onwards for giving info to the debug packages.
extraldflags="-Wl,--build-id";
@@ -493,6 +515,9 @@ fi
%{_mandir}/man1/qemu-img.1*
%changelog
+* Wed Jan 27 2010 Amit Shah <amit.shah at redhat.com> - 2:0.12.2-2
+- Add virtio-console patches from upstream for the F13 VirtioSerial feature
+
* Mon Jan 25 2010 Justin M. Forbes <jforbes at redhat.com> - 2:0.12.2-1
- Update to 0.12.2 upstream
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