From 2a3d57ce4278dfd898d8b5639ace21fa4a4fb9bd Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Wed, 25 May 2011 14:21:11 +0200 Subject: virtio-serial: Clean up virtconsole detection virtio-serial-bus needs to treat "virtconsole" devices specially. It uses VirtIOSerialPort member is_console to recognize them. It gets its value via property initialization. Cute hack, except it lets users mess with it: "-device virtconsole,is_console=0" isn't plugged into port 0 as it should. Move the flag to VirtIOSerialPortInfo. Keep the property for backward compatibility; its value has no effect. Signed-off-by: Markus Armbruster Signed-off-by: Amit Shah --- hw/virtio-console.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'hw/virtio-console.c') diff --git a/hw/virtio-console.c b/hw/virtio-console.c index de539c4eac..50b85f8a60 100644 --- a/hw/virtio-console.c +++ b/hw/virtio-console.c @@ -91,7 +91,7 @@ static int virtconsole_initfn(VirtIOSerialPort *port) { VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port); - port->is_console = true; + port->is_console_dummy = true; return generic_port_init(vcon, port); } @@ -113,10 +113,11 @@ static int virtconsole_exitfn(VirtIOSerialPort *port) static VirtIOSerialPortInfo virtconsole_info = { .qdev.name = "virtconsole", .qdev.size = sizeof(VirtConsole), + .is_console = true, .init = virtconsole_initfn, .exit = virtconsole_exitfn, .qdev.props = (Property[]) { - DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console, 1), + DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console_dummy, 1), DEFINE_PROP_UINT32("nr", VirtConsole, port.id, VIRTIO_CONSOLE_BAD_ID), DEFINE_PROP_CHR("chardev", VirtConsole, chr), DEFINE_PROP_STRING("name", VirtConsole, port.name), -- cgit v1.2.3-55-g7522 From 31d0f80f17b37a71ad4231daf05be9fab3c70292 Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Wed, 25 May 2011 14:21:12 +0200 Subject: virtio-serial: Drop useless property is_console All you could ever achieve with it is break stuff, so removing it should be safe. Signed-off-by: Markus Armbruster Signed-off-by: Amit Shah --- hw/virtio-console.c | 2 -- hw/virtio-serial.h | 3 --- 2 files changed, 5 deletions(-) (limited to 'hw/virtio-console.c') diff --git a/hw/virtio-console.c b/hw/virtio-console.c index 50b85f8a60..180ac0af76 100644 --- a/hw/virtio-console.c +++ b/hw/virtio-console.c @@ -91,7 +91,6 @@ static int virtconsole_initfn(VirtIOSerialPort *port) { VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port); - port->is_console_dummy = true; return generic_port_init(vcon, port); } @@ -117,7 +116,6 @@ static VirtIOSerialPortInfo virtconsole_info = { .init = virtconsole_initfn, .exit = virtconsole_exitfn, .qdev.props = (Property[]) { - DEFINE_PROP_UINT8("is_console", VirtConsole, port.is_console_dummy, 1), DEFINE_PROP_UINT32("nr", VirtConsole, port.id, VIRTIO_CONSOLE_BAD_ID), DEFINE_PROP_CHR("chardev", VirtConsole, chr), DEFINE_PROP_STRING("name", VirtConsole, port.name), diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h index 350ed21911..ac612f219f 100644 --- a/hw/virtio-serial.h +++ b/hw/virtio-serial.h @@ -124,9 +124,6 @@ struct VirtIOSerialPort { */ QEMUBH *bh; - /* For property backward compatibility, not used otherwise */ - uint8_t is_console_dummy; - /* Is the corresponding guest device open? */ bool guest_connected; /* Is this device open for IO on the host? */ -- cgit v1.2.3-55-g7522 From a15bb0d6a981de749452a5180fc8084d625671da Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Wed, 25 May 2011 14:21:13 +0200 Subject: virtio-serial: Drop redundant VirtIOSerialPort member info Signed-off-by: Markus Armbruster Signed-off-by: Amit Shah --- hw/virtio-console.c | 9 ++++++--- hw/virtio-serial-bus.c | 42 ++++++++++++++++++++++++++---------------- hw/virtio-serial.h | 1 - 3 files changed, 32 insertions(+), 20 deletions(-) (limited to 'hw/virtio-console.c') diff --git a/hw/virtio-console.c b/hw/virtio-console.c index 180ac0af76..713f6ef390 100644 --- a/hw/virtio-console.c +++ b/hw/virtio-console.c @@ -76,12 +76,15 @@ static void chr_event(void *opaque, int event) static int generic_port_init(VirtConsole *vcon, VirtIOSerialPort *port) { + VirtIOSerialPortInfo *info = DO_UPCAST(VirtIOSerialPortInfo, qdev, + vcon->port.dev.info); + if (vcon->chr) { qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event, vcon); - vcon->port.info->have_data = flush_buf; - vcon->port.info->guest_open = guest_open; - vcon->port.info->guest_close = guest_close; + info->have_data = flush_buf; + info->guest_open = guest_open; + info->guest_close = guest_close; } return 0; } diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c index ed44fab11c..9a12104982 100644 --- a/hw/virtio-serial-bus.c +++ b/hw/virtio-serial-bus.c @@ -129,9 +129,13 @@ static void discard_vq_data(VirtQueue *vq, VirtIODevice *vdev) static void do_flush_queued_data(VirtIOSerialPort *port, VirtQueue *vq, VirtIODevice *vdev) { + VirtIOSerialPortInfo *info; + assert(port); assert(virtio_queue_ready(vq)); + info = DO_UPCAST(VirtIOSerialPortInfo, qdev, port->dev.info); + while (!port->throttled) { unsigned int i; @@ -149,10 +153,10 @@ static void do_flush_queued_data(VirtIOSerialPort *port, VirtQueue *vq, ssize_t ret; buf_size = port->elem.out_sg[i].iov_len - port->iov_offset; - ret = port->info->have_data(port, - port->elem.out_sg[i].iov_base - + port->iov_offset, - buf_size); + ret = info->have_data(port, + port->elem.out_sg[i].iov_base + + port->iov_offset, + buf_size); if (ret < 0 && ret != -EAGAIN) { /* We don't handle any other type of errors here */ abort(); @@ -309,6 +313,7 @@ void virtio_serial_throttle_port(VirtIOSerialPort *port, bool throttle) static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len) { struct VirtIOSerialPort *port; + struct VirtIOSerialPortInfo *info; struct virtio_console_control cpkt, *gcpkt; uint8_t *buffer; size_t buffer_len; @@ -327,6 +332,8 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len) if (!port && cpkt.event != VIRTIO_CONSOLE_DEVICE_READY) return; + info = DO_UPCAST(VirtIOSerialPortInfo, qdev, port->dev.info); + switch(cpkt.event) { case VIRTIO_CONSOLE_DEVICE_READY: if (!cpkt.value) { @@ -356,7 +363,7 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len) * this port is a console port so that the guest can hook it * up to hvc. */ - if (port->info->is_console) { + if (info->is_console) { send_control_event(port, VIRTIO_CONSOLE_CONSOLE_PORT, 1); } @@ -385,21 +392,21 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len) * initialised. If some app is interested in knowing about * this event, let it know. */ - if (port->info->guest_ready) { - port->info->guest_ready(port); + if (info->guest_ready) { + info->guest_ready(port); } break; case VIRTIO_CONSOLE_PORT_OPEN: port->guest_connected = cpkt.value; - if (cpkt.value && port->info->guest_open) { + if (cpkt.value && info->guest_open) { /* Send the guest opened notification if an app is interested */ - port->info->guest_open(port); + info->guest_open(port); } - if (!cpkt.value && port->info->guest_close) { + if (!cpkt.value && info->guest_close) { /* Send the guest closed notification if an app is interested */ - port->info->guest_close(port); + info->guest_close(port); } break; } @@ -448,11 +455,13 @@ static void handle_output(VirtIODevice *vdev, VirtQueue *vq) { VirtIOSerial *vser; VirtIOSerialPort *port; + VirtIOSerialPortInfo *info; vser = DO_UPCAST(VirtIOSerial, vdev, vdev); port = find_port_by_vq(vser, vq); + info = port ? DO_UPCAST(VirtIOSerialPortInfo, qdev, port->dev.info) : NULL; - if (!port || !port->host_connected || !port->info->have_data) { + if (!port || !port->host_connected || !info->have_data) { discard_vq_data(vq, vdev); return; } @@ -756,7 +765,6 @@ static int virtser_port_qdev_init(DeviceState *qdev, DeviceInfo *base) return -1; } - port->info = info; ret = info->init(port); if (ret) { return ret; @@ -787,6 +795,8 @@ static int virtser_port_qdev_init(DeviceState *qdev, DeviceInfo *base) static int virtser_port_qdev_exit(DeviceState *qdev) { VirtIOSerialPort *port = DO_UPCAST(VirtIOSerialPort, dev, qdev); + VirtIOSerialPortInfo *info = DO_UPCAST(VirtIOSerialPortInfo, qdev, + port->dev.info); VirtIOSerial *vser = port->vser; qemu_bh_delete(port->bh); @@ -794,9 +804,9 @@ static int virtser_port_qdev_exit(DeviceState *qdev) QTAILQ_REMOVE(&vser->ports, port, next); - if (port->info->exit) - port->info->exit(port); - + if (info->exit) { + info->exit(port); + } return 0; } diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h index ac612f219f..36e9d222e5 100644 --- a/hw/virtio-serial.h +++ b/hw/virtio-serial.h @@ -75,7 +75,6 @@ typedef struct VirtIOSerialPortInfo VirtIOSerialPortInfo; */ struct VirtIOSerialPort { DeviceState dev; - VirtIOSerialPortInfo *info; QTAILQ_ENTRY(VirtIOSerialPort) next; -- cgit v1.2.3-55-g7522 From 7edfe65246e57c1970f72146c6ea11f8d3a71e2d Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Wed, 25 May 2011 14:21:14 +0200 Subject: virtio-console: Simplify init callbacks Signed-off-by: Markus Armbruster Signed-off-by: Amit Shah --- hw/virtio-console.c | 35 +++++++++-------------------------- 1 file changed, 9 insertions(+), 26 deletions(-) (limited to 'hw/virtio-console.c') diff --git a/hw/virtio-console.c b/hw/virtio-console.c index 713f6ef390..b076331d37 100644 --- a/hw/virtio-console.c +++ b/hw/virtio-console.c @@ -74,11 +74,17 @@ static void chr_event(void *opaque, int event) } } -static int generic_port_init(VirtConsole *vcon, VirtIOSerialPort *port) +static int virtconsole_initfn(VirtIOSerialPort *port) { + VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port); VirtIOSerialPortInfo *info = DO_UPCAST(VirtIOSerialPortInfo, qdev, vcon->port.dev.info); + if (port->id == 0 && !info->is_console) { + error_report("Port number 0 on virtio-serial devices reserved for virtconsole devices for backward compatibility."); + return -1; + } + if (vcon->chr) { qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event, vcon); @@ -86,15 +92,8 @@ static int generic_port_init(VirtConsole *vcon, VirtIOSerialPort *port) info->guest_open = guest_open; info->guest_close = guest_close; } - return 0; -} - -/* Virtio Console Ports */ -static int virtconsole_initfn(VirtIOSerialPort *port) -{ - VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port); - return generic_port_init(vcon, port); + return 0; } static int virtconsole_exitfn(VirtIOSerialPort *port) @@ -132,26 +131,10 @@ static void virtconsole_register(void) } device_init(virtconsole_register) -/* Generic Virtio Serial Ports */ -static int virtserialport_initfn(VirtIOSerialPort *port) -{ - VirtConsole *vcon = DO_UPCAST(VirtConsole, port, port); - - if (port->id == 0) { - /* - * Disallow a generic port at id 0, that's reserved for - * console ports. - */ - error_report("Port number 0 on virtio-serial devices reserved for virtconsole devices for backward compatibility."); - return -1; - } - return generic_port_init(vcon, port); -} - static VirtIOSerialPortInfo virtserialport_info = { .qdev.name = "virtserialport", .qdev.size = sizeof(VirtConsole), - .init = virtserialport_initfn, + .init = virtconsole_initfn, .exit = virtconsole_exitfn, .qdev.props = (Property[]) { DEFINE_PROP_UINT32("nr", VirtConsole, port.id, VIRTIO_CONSOLE_BAD_ID), -- cgit v1.2.3-55-g7522