[Qemu-devel] [PATCH v6 7/8] virtio-serial-bus: use virtio wrappers to access headers

[Greg Kurz <gkurz@linux.vnet.ibm.com>]

From: Rusty Russell <rusty@rustcorp.com.au>

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ use per-device needs_byteswap flag,
  Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
---
 hw/char/virtio-serial-bus.c |   39 +++++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 16 deletions(-)

diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c
index 2b647b6..7a84b2a 100644
--- a/hw/char/virtio-serial-bus.c
+++ b/hw/char/virtio-serial-bus.c
@@ -24,6 +24,7 @@
 #include "hw/sysbus.h"
 #include "trace.h"
 #include "hw/virtio/virtio-serial.h"
+#include "hw/virtio/virtio-access.h"
 
 static VirtIOSerialPort *find_port_by_id(VirtIOSerial *vser, uint32_t id)
 {
@@ -185,9 +186,9 @@ static size_t send_control_event(VirtIOSerial *vser, uint32_t port_id,
 {
     struct virtio_console_control cpkt;
 
-    stl_p(&cpkt.id, port_id);
-    stw_p(&cpkt.event, event);
-    stw_p(&cpkt.value, value);
+    virtio_stl_p(&cpkt.id, port_id, VIRTIO_DEVICE(vser));
+    virtio_stw_p(&cpkt.event, event, VIRTIO_DEVICE(vser));
+    virtio_stw_p(&cpkt.value, value, VIRTIO_DEVICE(vser));
 
     trace_virtio_serial_send_control_event(port_id, event, value);
     return send_control_msg(vser, &cpkt, sizeof(cpkt));
@@ -291,8 +292,8 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len)
         return;
     }
 
-    cpkt.event = lduw_p(&gcpkt->event);
-    cpkt.value = lduw_p(&gcpkt->value);
+    cpkt.event = virtio_lduw_p(&gcpkt->event, VIRTIO_DEVICE(vser));
+    cpkt.value = virtio_lduw_p(&gcpkt->value, VIRTIO_DEVICE(vser));
 
     trace_virtio_serial_handle_control_message(cpkt.event, cpkt.value);
 
@@ -312,10 +313,11 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len)
         return;
     }
 
-    port = find_port_by_id(vser, ldl_p(&gcpkt->id));
+    port = find_port_by_id(vser, virtio_ldl_p(&gcpkt->id, VIRTIO_DEVICE(vser)));
     if (!port) {
         error_report("virtio-serial-bus: Unexpected port id %u for device %s",
-                     ldl_p(&gcpkt->id), vser->bus.qbus.name);
+                     virtio_ldl_p(&gcpkt->id, VIRTIO_DEVICE(vser)),
+                     vser->bus.qbus.name);
         return;
     }
 
@@ -342,9 +344,10 @@ static void handle_control_message(VirtIOSerial *vser, void *buf, size_t len)
         }
 
         if (port->name) {
-            stl_p(&cpkt.id, port->id);
-            stw_p(&cpkt.event, VIRTIO_CONSOLE_PORT_NAME);
-            stw_p(&cpkt.value, 1);
+            virtio_stl_p(&cpkt.id, port->id, VIRTIO_DEVICE(vser));
+            virtio_stw_p(&cpkt.event, VIRTIO_CONSOLE_PORT_NAME,
+                         VIRTIO_DEVICE(vser));
+            virtio_stw_p(&cpkt.value, 1, VIRTIO_DEVICE(vser));
 
             buffer_len = sizeof(cpkt) + strlen(port->name) + 1;
             buffer = g_malloc(buffer_len);
@@ -536,7 +539,7 @@ static void virtio_serial_save(QEMUFile *f, void *opaque)
     qemu_put_be32s(f, &s->config.max_nr_ports);
 
     /* The ports map */
-    max_nr_ports = tswap32(s->config.max_nr_ports);
+    max_nr_ports = virtio_tswap32(s->config.max_nr_ports, VIRTIO_DEVICE(s));
     for (i = 0; i < (max_nr_ports + 31) / 32; i++) {
         qemu_put_be32s(f, &s->ports_map[i]);
     }
@@ -690,8 +693,9 @@ static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
     qemu_get_be16s(f, &s->config.rows);
 
     qemu_get_be32s(f, &max_nr_ports);
-    tswap32s(&max_nr_ports);
-    if (max_nr_ports > tswap32(s->config.max_nr_ports)) {
+    virtio_tswap32s(&max_nr_ports, VIRTIO_DEVICE(s));
+    if (max_nr_ports > virtio_tswap32(s->config.max_nr_ports,
+                                      VIRTIO_DEVICE(s))) {
         /* Source could have had more ports than us. Fail migration. */
         return -EINVAL;
     }
@@ -760,7 +764,8 @@ static uint32_t find_free_port_id(VirtIOSerial *vser)
 {
     unsigned int i, max_nr_ports;
 
-    max_nr_ports = tswap32(vser->config.max_nr_ports);
+    max_nr_ports = virtio_tswap32(vser->config.max_nr_ports,
+                                  VIRTIO_DEVICE(vser));
     for (i = 0; i < (max_nr_ports + 31) / 32; i++) {
         uint32_t map, bit;
 
@@ -848,7 +853,8 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp)
         }
     }
 
-    max_nr_ports = tswap32(port->vser->config.max_nr_ports);
+    max_nr_ports = virtio_tswap32(port->vser->config.max_nr_ports,
+                                  VIRTIO_DEVICE(port->vser));
     if (port->id >= max_nr_ports) {
         error_setg(errp, "virtio-serial-bus: Out-of-range port id specified, "
                          "max. allowed: %u", max_nr_ports - 1);
@@ -949,7 +955,8 @@ static void virtio_serial_device_realize(DeviceState *dev, Error **errp)
         vser->ovqs[i] = virtio_add_queue(vdev, 128, handle_output);
     }
 
-    vser->config.max_nr_ports = tswap32(vser->serial.max_virtserial_ports);
+    vser->config.max_nr_ports =
+        virtio_tswap32(vser->serial.max_virtserial_ports, VIRTIO_DEVICE(vser));
     vser->ports_map = g_malloc0(((vser->serial.max_virtserial_ports + 31) / 32)
         * sizeof(vser->ports_map[0]));
     /*