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Message-ID: <1417449619-24896-48-git-send-email-mst@redhat.com>
Date: Mon, 1 Dec 2014 18:06:45 +0200
From: "Michael S. Tsirkin" <mst@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: David Miller <davem@...emloft.net>, cornelia.huck@...ibm.com,
rusty@....ibm.com, nab@...ux-iscsi.org, pbonzini@...hat.com,
thuth@...ux.vnet.ibm.com, dahi@...ux.vnet.ibm.com,
Amit Shah <amit.shah@...hat.com>,
Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rusty Russell <rusty@...tcorp.com.au>,
virtualization@...ts.linux-foundation.org,
linux-api@...r.kernel.org
Subject: [PATCH v8 47/50] virtio_console: virtio 1.0 support
Pretty straight-forward, just use accessors for all fields.
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
include/uapi/linux/virtio_console.h | 7 ++++---
drivers/char/virtio_console.c | 29 +++++++++++++++++------------
2 files changed, 21 insertions(+), 15 deletions(-)
diff --git a/include/uapi/linux/virtio_console.h b/include/uapi/linux/virtio_console.h
index ba260dd..b7fb108 100644
--- a/include/uapi/linux/virtio_console.h
+++ b/include/uapi/linux/virtio_console.h
@@ -32,6 +32,7 @@
#ifndef _UAPI_LINUX_VIRTIO_CONSOLE_H
#define _UAPI_LINUX_VIRTIO_CONSOLE_H
#include <linux/types.h>
+#include <linux/virtio_types.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
@@ -58,9 +59,9 @@ struct virtio_console_config {
* particular port.
*/
struct virtio_console_control {
- __u32 id; /* Port number */
- __u16 event; /* The kind of control event (see below) */
- __u16 value; /* Extra information for the key */
+ __virtio32 id; /* Port number */
+ __virtio16 event; /* The kind of control event (see below) */
+ __virtio16 value; /* Extra information for the key */
};
/* Some events for control messages */
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 8d00aa7..775c898 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -566,9 +566,9 @@ static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id,
if (!use_multiport(portdev))
return 0;
- cpkt.id = port_id;
- cpkt.event = event;
- cpkt.value = value;
+ cpkt.id = cpu_to_virtio32(portdev->vdev, port_id);
+ cpkt.event = cpu_to_virtio16(portdev->vdev, event);
+ cpkt.value = cpu_to_virtio16(portdev->vdev, value);
vq = portdev->c_ovq;
@@ -1602,7 +1602,8 @@ static void unplug_port(struct port *port)
}
/* Any private messages that the Host and Guest want to share */
-static void handle_control_message(struct ports_device *portdev,
+static void handle_control_message(struct virtio_device *vdev,
+ struct ports_device *portdev,
struct port_buffer *buf)
{
struct virtio_console_control *cpkt;
@@ -1612,15 +1613,16 @@ static void handle_control_message(struct ports_device *portdev,
cpkt = (struct virtio_console_control *)(buf->buf + buf->offset);
- port = find_port_by_id(portdev, cpkt->id);
- if (!port && cpkt->event != VIRTIO_CONSOLE_PORT_ADD) {
+ port = find_port_by_id(portdev, virtio32_to_cpu(vdev, cpkt->id));
+ if (!port &&
+ cpkt->event != cpu_to_virtio16(vdev, VIRTIO_CONSOLE_PORT_ADD)) {
/* No valid header at start of buffer. Drop it. */
dev_dbg(&portdev->vdev->dev,
"Invalid index %u in control packet\n", cpkt->id);
return;
}
- switch (cpkt->event) {
+ switch (virtio16_to_cpu(vdev, cpkt->event)) {
case VIRTIO_CONSOLE_PORT_ADD:
if (port) {
dev_dbg(&portdev->vdev->dev,
@@ -1628,13 +1630,15 @@ static void handle_control_message(struct ports_device *portdev,
send_control_msg(port, VIRTIO_CONSOLE_PORT_READY, 1);
break;
}
- if (cpkt->id >= portdev->config.max_nr_ports) {
+ if (virtio32_to_cpu(vdev, cpkt->id) >=
+ portdev->config.max_nr_ports) {
dev_warn(&portdev->vdev->dev,
- "Request for adding port with out-of-bound id %u, max. supported id: %u\n",
+ "Request for adding port with "
+ "out-of-bound id %u, max. supported id: %u\n",
cpkt->id, portdev->config.max_nr_ports - 1);
break;
}
- add_port(portdev, cpkt->id);
+ add_port(portdev, virtio32_to_cpu(vdev, cpkt->id));
break;
case VIRTIO_CONSOLE_PORT_REMOVE:
unplug_port(port);
@@ -1670,7 +1674,7 @@ static void handle_control_message(struct ports_device *portdev,
break;
}
case VIRTIO_CONSOLE_PORT_OPEN:
- port->host_connected = cpkt->value;
+ port->host_connected = virtio16_to_cpu(vdev, cpkt->value);
wake_up_interruptible(&port->waitqueue);
/*
* If the host port got closed and the host had any
@@ -1752,7 +1756,7 @@ static void control_work_handler(struct work_struct *work)
buf->len = len;
buf->offset = 0;
- handle_control_message(portdev, buf);
+ handle_control_message(vq->vdev, portdev, buf);
spin_lock(&portdev->c_ivq_lock);
if (add_inbuf(portdev->c_ivq, buf) < 0) {
@@ -2126,6 +2130,7 @@ static struct virtio_device_id id_table[] = {
static unsigned int features[] = {
VIRTIO_CONSOLE_F_SIZE,
VIRTIO_CONSOLE_F_MULTIPORT,
+ VIRTIO_F_VERSION_1,
};
static struct virtio_device_id rproc_serial_id_table[] = {
--
MST
--
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