hw/virtio: Extract config read/write accessors to virtio-config-io.c

These config helpers use the target-dependent LD/ST API.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221213111707.34921-6-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

3 files changed, 205 insertions, 190 deletions

diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build
index 0d1ea1fe..a52f4e5 100644
--- a/hw/virtio/meson.build
+++ b/hw/virtio/meson.build
@@ -5,6 +5,7 @@ softmmu_virtio_ss.add(when: 'CONFIG_VIRTIO_MMIO', if_true: files('virtio-mmio.c'
 
 specific_virtio_ss = ss.source_set()
 specific_virtio_ss.add(files('virtio.c'))
+specific_virtio_ss.add(files('virtio-config-io.c'))
 
 if have_vhost
   specific_virtio_ss.add(files('vhost.c', 'vhost-backend.c', 'vhost-iova-tree.c'))
diff --git a/hw/virtio/virtio-config-io.c b/hw/virtio/virtio-config-io.c
new file mode 100644
index 0000000..ad78e0b
--- /dev/null
+++ b/hw/virtio/virtio-config-io.c
@@ -0,0 +1,204 @@
+/*
+ * Virtio Support
+ *
+ * Copyright IBM, Corp. 2007
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "hw/virtio/virtio.h"
+#include "cpu.h"
+
+uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint8_t val;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return (uint32_t)-1;
+    }
+
+    k->get_config(vdev, vdev->config);
+
+    val = ldub_p(vdev->config + addr);
+    return val;
+}
+
+uint32_t virtio_config_readw(VirtIODevice *vdev, uint32_t addr)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint16_t val;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return (uint32_t)-1;
+    }
+
+    k->get_config(vdev, vdev->config);
+
+    val = lduw_p(vdev->config + addr);
+    return val;
+}
+
+uint32_t virtio_config_readl(VirtIODevice *vdev, uint32_t addr)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint32_t val;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return (uint32_t)-1;
+    }
+
+    k->get_config(vdev, vdev->config);
+
+    val = ldl_p(vdev->config + addr);
+    return val;
+}
+
+void virtio_config_writeb(VirtIODevice *vdev, uint32_t addr, uint32_t data)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint8_t val = data;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return;
+    }
+
+    stb_p(vdev->config + addr, val);
+
+    if (k->set_config) {
+        k->set_config(vdev, vdev->config);
+    }
+}
+
+void virtio_config_writew(VirtIODevice *vdev, uint32_t addr, uint32_t data)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint16_t val = data;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return;
+    }
+
+    stw_p(vdev->config + addr, val);
+
+    if (k->set_config) {
+        k->set_config(vdev, vdev->config);
+    }
+}
+
+void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint32_t val = data;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return;
+    }
+
+    stl_p(vdev->config + addr, val);
+
+    if (k->set_config) {
+        k->set_config(vdev, vdev->config);
+    }
+}
+
+uint32_t virtio_config_modern_readb(VirtIODevice *vdev, uint32_t addr)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint8_t val;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return (uint32_t)-1;
+    }
+
+    k->get_config(vdev, vdev->config);
+
+    val = ldub_p(vdev->config + addr);
+    return val;
+}
+
+uint32_t virtio_config_modern_readw(VirtIODevice *vdev, uint32_t addr)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint16_t val;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return (uint32_t)-1;
+    }
+
+    k->get_config(vdev, vdev->config);
+
+    val = lduw_le_p(vdev->config + addr);
+    return val;
+}
+
+uint32_t virtio_config_modern_readl(VirtIODevice *vdev, uint32_t addr)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint32_t val;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return (uint32_t)-1;
+    }
+
+    k->get_config(vdev, vdev->config);
+
+    val = ldl_le_p(vdev->config + addr);
+    return val;
+}
+
+void virtio_config_modern_writeb(VirtIODevice *vdev,
+                                 uint32_t addr, uint32_t data)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint8_t val = data;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return;
+    }
+
+    stb_p(vdev->config + addr, val);
+
+    if (k->set_config) {
+        k->set_config(vdev, vdev->config);
+    }
+}
+
+void virtio_config_modern_writew(VirtIODevice *vdev,
+                                 uint32_t addr, uint32_t data)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint16_t val = data;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return;
+    }
+
+    stw_le_p(vdev->config + addr, val);
+
+    if (k->set_config) {
+        k->set_config(vdev, vdev->config);
+    }
+}
+
+void virtio_config_modern_writel(VirtIODevice *vdev,
+                                 uint32_t addr, uint32_t data)
+{
+    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
+    uint32_t val = data;
+
+    if (addr + sizeof(val) > vdev->config_len) {
+        return;
+    }
+
+    stl_le_p(vdev->config + addr, val);
+
+    if (k->set_config) {
+        k->set_config(vdev, vdev->config);
+    }
+}
+
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 989c962..e0aa702 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -18,7 +18,6 @@
 #include "qapi/qapi-commands-qom.h"
 #include "qapi/qapi-visit-virtio.h"
 #include "qapi/qmp/qjson.h"
-#include "cpu.h"
 #include "trace.h"
 #include "qemu/error-report.h"
 #include "qemu/log.h"
@@ -2580,195 +2579,6 @@ void virtio_reset(void *opaque)
     }
 }
 
-uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint8_t val;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return (uint32_t)-1;
-    }
-
-    k->get_config(vdev, vdev->config);
-
-    val = ldub_p(vdev->config + addr);
-    return val;
-}
-
-uint32_t virtio_config_readw(VirtIODevice *vdev, uint32_t addr)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint16_t val;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return (uint32_t)-1;
-    }
-
-    k->get_config(vdev, vdev->config);
-
-    val = lduw_p(vdev->config + addr);
-    return val;
-}
-
-uint32_t virtio_config_readl(VirtIODevice *vdev, uint32_t addr)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint32_t val;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return (uint32_t)-1;
-    }
-
-    k->get_config(vdev, vdev->config);
-
-    val = ldl_p(vdev->config + addr);
-    return val;
-}
-
-void virtio_config_writeb(VirtIODevice *vdev, uint32_t addr, uint32_t data)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint8_t val = data;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return;
-    }
-
-    stb_p(vdev->config + addr, val);
-
-    if (k->set_config) {
-        k->set_config(vdev, vdev->config);
-    }
-}
-
-void virtio_config_writew(VirtIODevice *vdev, uint32_t addr, uint32_t data)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint16_t val = data;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return;
-    }
-
-    stw_p(vdev->config + addr, val);
-
-    if (k->set_config) {
-        k->set_config(vdev, vdev->config);
-    }
-}
-
-void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint32_t val = data;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return;
-    }
-
-    stl_p(vdev->config + addr, val);
-
-    if (k->set_config) {
-        k->set_config(vdev, vdev->config);
-    }
-}
-
-uint32_t virtio_config_modern_readb(VirtIODevice *vdev, uint32_t addr)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint8_t val;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return (uint32_t)-1;
-    }
-
-    k->get_config(vdev, vdev->config);
-
-    val = ldub_p(vdev->config + addr);
-    return val;
-}
-
-uint32_t virtio_config_modern_readw(VirtIODevice *vdev, uint32_t addr)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint16_t val;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return (uint32_t)-1;
-    }
-
-    k->get_config(vdev, vdev->config);
-
-    val = lduw_le_p(vdev->config + addr);
-    return val;
-}
-
-uint32_t virtio_config_modern_readl(VirtIODevice *vdev, uint32_t addr)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint32_t val;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return (uint32_t)-1;
-    }
-
-    k->get_config(vdev, vdev->config);
-
-    val = ldl_le_p(vdev->config + addr);
-    return val;
-}
-
-void virtio_config_modern_writeb(VirtIODevice *vdev,
-                                 uint32_t addr, uint32_t data)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint8_t val = data;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return;
-    }
-
-    stb_p(vdev->config + addr, val);
-
-    if (k->set_config) {
-        k->set_config(vdev, vdev->config);
-    }
-}
-
-void virtio_config_modern_writew(VirtIODevice *vdev,
-                                 uint32_t addr, uint32_t data)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint16_t val = data;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return;
-    }
-
-    stw_le_p(vdev->config + addr, val);
-
-    if (k->set_config) {
-        k->set_config(vdev, vdev->config);
-    }
-}
-
-void virtio_config_modern_writel(VirtIODevice *vdev,
-                                 uint32_t addr, uint32_t data)
-{
-    VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev);
-    uint32_t val = data;
-
-    if (addr + sizeof(val) > vdev->config_len) {
-        return;
-    }
-
-    stl_le_p(vdev->config + addr, val);
-
-    if (k->set_config) {
-        k->set_config(vdev, vdev->config);
-    }
-}
-
 void virtio_queue_set_addr(VirtIODevice *vdev, int n, hwaddr addr)
 {
     if (!vdev->vq[n].vring.num) {