diff options
Diffstat (limited to 'include/linux/mdev.h')
| -rw-r--r-- | include/linux/mdev.h | 80 |
1 files changed, 58 insertions, 22 deletions
diff --git a/include/linux/mdev.h b/include/linux/mdev.h index 27eb383cb95d..1fb34ea394ad 100644 --- a/include/linux/mdev.h +++ b/include/linux/mdev.h @@ -10,7 +10,22 @@ #ifndef MDEV_H #define MDEV_H -struct mdev_device; +struct mdev_type; + +struct mdev_device { + struct device dev; + guid_t uuid; + void *driver_data; + struct list_head next; + struct mdev_type *type; + 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 +34,21 @@ 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; +} + +unsigned int mdev_get_type_group_id(struct mdev_device *mdev); +unsigned int mtype_get_type_group_id(struct mdev_type *mtype); +struct device *mtype_get_parent_dev(struct mdev_type *mtype); /** * struct mdev_parent_ops - Structure to be registered for each parent device to @@ -38,7 +62,6 @@ struct device *mdev_get_iommu_device(struct device *dev); * @create: Called to allocate basic resources in parent device's * driver for a particular mediated device. It is * mandatory to provide create ops. - * @kobj: kobject of type for which 'create' is called. * @mdev: mdev_device structure on of mediated device * that is being created * Returns integer: success (0) or error (< 0) @@ -84,7 +107,7 @@ struct mdev_parent_ops { const struct attribute_group **mdev_attr_groups; struct attribute_group **supported_type_groups; - int (*create)(struct kobject *kobj, struct mdev_device *mdev); + int (*create)(struct mdev_device *mdev); int (*remove)(struct mdev_device *mdev); int (*open)(struct mdev_device *mdev); void (*release)(struct mdev_device *mdev); @@ -101,9 +124,11 @@ struct mdev_parent_ops { /* interface for exporting mdev supported type attributes */ struct mdev_type_attribute { struct attribute attr; - ssize_t (*show)(struct kobject *kobj, struct device *dev, char *buf); - ssize_t (*store)(struct kobject *kobj, struct device *dev, - const char *buf, size_t count); + ssize_t (*show)(struct mdev_type *mtype, + struct mdev_type_attribute *attr, char *buf); + ssize_t (*store)(struct mdev_type *mtype, + struct mdev_type_attribute *attr, const char *buf, + size_t count); }; #define MDEV_TYPE_ATTR(_name, _mode, _show, _store) \ @@ -118,35 +143,46 @@ struct mdev_type_attribute mdev_type_attr_##_name = \ /** * struct mdev_driver - Mediated device driver - * @name: driver name * @probe: called when new device created * @remove: called when device removed * @driver: device driver structure * **/ 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; int mdev_register_device(struct device *dev, const struct mdev_parent_ops *ops); void mdev_unregister_device(struct device *dev); -int mdev_register_driver(struct mdev_driver *drv, struct module *owner); +int mdev_register_driver(struct mdev_driver *drv); 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 */ |