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Subject[PATCH v2 2/5] virtio-mmio: refactor common functionality
Date
From: Liu Jiang <gerry@linux.alibaba.com>

Common functionality is refactored into virtio_mmio_common.h
in order to MSI support in later patch set.

Signed-off-by: Liu Jiang <gerry@linux.alibaba.com>
Co-developed-by: Zha Bin <zhabin@linux.alibaba.com>
Signed-off-by: Zha Bin <zhabin@linux.alibaba.com>
Co-developed-by: Jing Liu <jing2.liu@linux.intel.com>
Signed-off-by: Jing Liu <jing2.liu@linux.intel.com>
Co-developed-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
---
drivers/virtio/virtio_mmio.c | 21 +--------------------
drivers/virtio/virtio_mmio_common.h | 31 +++++++++++++++++++++++++++++++
2 files changed, 32 insertions(+), 20 deletions(-)
create mode 100644 drivers/virtio/virtio_mmio_common.h

diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 1733ab97..41e1c93 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -61,13 +61,12 @@
#include <linux/io.h>
#include <linux/list.h>
#include <linux/module.h>
-#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/virtio.h>
#include <linux/virtio_config.h>
#include <uapi/linux/virtio_mmio.h>
#include <linux/virtio_ring.h>
+#include "virtio_mmio_common.h"



@@ -77,24 +76,6 @@



-#define to_virtio_mmio_device(_plat_dev) \
- container_of(_plat_dev, struct virtio_mmio_device, vdev)
-
-struct virtio_mmio_device {
- struct virtio_device vdev;
- struct platform_device *pdev;
-
- void __iomem *base;
- unsigned long version;
-
- /* a list of queues so we can dispatch IRQs */
- spinlock_t lock;
- struct list_head virtqueues;
-
- unsigned short notify_base;
- unsigned short notify_multiplier;
-};
-
struct virtio_mmio_vq_info {
/* the actual virtqueue */
struct virtqueue *vq;
diff --git a/drivers/virtio/virtio_mmio_common.h b/drivers/virtio/virtio_mmio_common.h
new file mode 100644
index 0000000..90cb304
--- /dev/null
+++ b/drivers/virtio/virtio_mmio_common.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _DRIVERS_VIRTIO_VIRTIO_MMIO_COMMON_H
+#define _DRIVERS_VIRTIO_VIRTIO_MMIO_COMMON_H
+/*
+ * Virtio MMIO driver - common functionality for all device versions
+ *
+ * This module allows virtio devices to be used over a memory-mapped device.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/virtio.h>
+
+#define to_virtio_mmio_device(_plat_dev) \
+ container_of(_plat_dev, struct virtio_mmio_device, vdev)
+
+struct virtio_mmio_device {
+ struct virtio_device vdev;
+ struct platform_device *pdev;
+
+ void __iomem *base;
+ unsigned long version;
+
+ /* a list of queues so we can dispatch IRQs */
+ spinlock_t lock;
+ struct list_head virtqueues;
+
+ unsigned short notify_base;
+ unsigned short notify_multiplier;
+};
+
+#endif
--
1.8.3.1
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