clear-pkgs-linux-iot-lts2018/0499-VHM-add-VHM-api-version-support.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Chen CJ <jason.cj.chen@intel.com>
Date: Fri, 31 Aug 2018 10:58:58 +0800
Subject: [PATCH] VHM: add VHM api version support

Change-Id: I36dd051d0cc04720ab8d69817392ff97f1e5ad34
Tracked-On: 218802
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
---
 drivers/char/vhm/vhm_dev.c         | 16 ++++++++++++++++
 include/linux/vhm/vhm_ioctl_defs.h |  5 +++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/char/vhm/vhm_dev.c b/drivers/char/vhm/vhm_dev.c
index 88fb0fa..27844c8 100644
--- a/drivers/char/vhm/vhm_dev.c
+++ b/drivers/char/vhm/vhm_dev.c
@@ -87,6 +87,9 @@
 #define  DEVICE_NAME "acrn_vhm"
 #define  CLASS_NAME  "vhm"
 
+#define VHM_API_VERSION_MAJOR	1
+#define VHM_API_VERSION_MINOR	0
+
 static int    major;
 static struct class *vhm_class;
 static struct device *vhm_device;
@@ -156,6 +159,19 @@ static long vhm_dev_ioctl(struct file *filep,
 
 	trace_printk("[%s] ioctl_num=0x%x\n", __func__, ioctl_num);
 
+	if (ioctl_num == IC_GET_API_VERSION) {
+		struct api_version api_version;
+
+		api_version.major_version = VHM_API_VERSION_MAJOR;
+		api_version.minor_version = VHM_API_VERSION_MINOR;
+
+		if (copy_to_user((void *)ioctl_param, &api_version,
+			sizeof(struct api_version)))
+			return -EFAULT;
+
+		return 0;
+	}
+
 	memset(&hc_pt_irq, 0, sizeof(hc_pt_irq));
 	memset(&ic_pt_irq, 0, sizeof(ic_pt_irq));
 	vm = (struct vhm_vm *)filep->private_data;
diff --git a/include/linux/vhm/vhm_ioctl_defs.h b/include/linux/vhm/vhm_ioctl_defs.h
index d00b658..258ec39 100644
--- a/include/linux/vhm/vhm_ioctl_defs.h
+++ b/include/linux/vhm/vhm_ioctl_defs.h
@@ -159,4 +159,9 @@ struct ioreq_notify {
        uint32_t vcpu;
 };
 
+struct api_version {
+	uint32_t major_version;
+	uint32_t minor_version;
+};
+
 #endif /* VHM_IOCTL_DEFS_H */
-- 
2.21.0