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-rw-r--r--include/linux/mdev.h58
1 files changed, 46 insertions, 12 deletions
diff --git a/include/linux/mdev.h b/include/linux/mdev.h
index 27eb383cb95d..52f7ea19dd0f 100644
--- a/include/linux/mdev.h
+++ b/include/linux/mdev.h
@@ -10,7 +10,21 @@
#ifndef MDEV_H
#define MDEV_H
-struct mdev_device;
+struct mdev_device {
+ struct device dev;
+ struct mdev_parent *parent;
+ guid_t uuid;
+ void *driver_data;
+ struct list_head next;
+ struct kobject *type_kobj;
+ struct device *iommu_device;
+ bool active;
+};
+
+static inline struct mdev_device *to_mdev_device(struct device *dev)
+{
+ return container_of(dev, struct mdev_device, dev);
+}
/*
* Called by the parent device driver to set the device which represents
@@ -19,12 +33,17 @@ struct mdev_device;
*
* @dev: the mediated device that iommu will isolate.
* @iommu_device: a pci device which represents the iommu for @dev.
- *
- * Return 0 for success, otherwise negative error value.
*/
-int mdev_set_iommu_device(struct device *dev, struct device *iommu_device);
+static inline void mdev_set_iommu_device(struct mdev_device *mdev,
+ struct device *iommu_device)
+{
+ mdev->iommu_device = iommu_device;
+}
-struct device *mdev_get_iommu_device(struct device *dev);
+static inline struct device *mdev_get_iommu_device(struct mdev_device *mdev)
+{
+ return mdev->iommu_device;
+}
/**
* struct mdev_parent_ops - Structure to be registered for each parent device to
@@ -126,16 +145,25 @@ struct mdev_type_attribute mdev_type_attr_##_name = \
**/
struct mdev_driver {
const char *name;
- int (*probe)(struct device *dev);
- void (*remove)(struct device *dev);
+ int (*probe)(struct mdev_device *dev);
+ void (*remove)(struct mdev_device *dev);
struct device_driver driver;
};
#define to_mdev_driver(drv) container_of(drv, struct mdev_driver, driver)
-void *mdev_get_drvdata(struct mdev_device *mdev);
-void mdev_set_drvdata(struct mdev_device *mdev, void *data);
-const guid_t *mdev_uuid(struct mdev_device *mdev);
+static inline void *mdev_get_drvdata(struct mdev_device *mdev)
+{
+ return mdev->driver_data;
+}
+static inline void mdev_set_drvdata(struct mdev_device *mdev, void *data)
+{
+ mdev->driver_data = data;
+}
+static inline const guid_t *mdev_uuid(struct mdev_device *mdev)
+{
+ return &mdev->uuid;
+}
extern struct bus_type mdev_bus_type;
@@ -146,7 +174,13 @@ int mdev_register_driver(struct mdev_driver *drv, struct module *owner);
void mdev_unregister_driver(struct mdev_driver *drv);
struct device *mdev_parent_dev(struct mdev_device *mdev);
-struct device *mdev_dev(struct mdev_device *mdev);
-struct mdev_device *mdev_from_dev(struct device *dev);
+static inline struct device *mdev_dev(struct mdev_device *mdev)
+{
+ return &mdev->dev;
+}
+static inline struct mdev_device *mdev_from_dev(struct device *dev)
+{
+ return dev->bus == &mdev_bus_type ? to_mdev_device(dev) : NULL;
+}
#endif /* MDEV_H */