* @last_used_idx: used index
*/
struct vdpa_vq_state_packed {
- u16 last_avail_counter:1;
- u16 last_avail_idx:15;
- u16 last_used_counter:1;
- u16 last_used_idx:15;
+ u16 last_avail_counter:1;
+ u16 last_avail_idx:15;
+ u16 last_used_counter:1;
+ u16 last_used_idx:15;
};
struct vdpa_vq_state {
- union {
- struct vdpa_vq_state_split split;
- struct vdpa_vq_state_packed packed;
- };
+ union {
+ struct vdpa_vq_state_split split;
+ struct vdpa_vq_state_packed packed;
+ };
};
struct vdpa_mgmt_dev;
* @vdev: vdpa device
* @idx: virtqueue index
* @state: pointer to returned state (last_avail_idx)
- * @get_vq_notification: Get the notification area for a virtqueue
+ * @get_vq_notification: Get the notification area for a virtqueue
* @vdev: vdpa device
* @idx: virtqueue index
* Returns the notifcation area
* @set_status: Set the device status
* @vdev: vdpa device
* @status: virtio device status
+ * @reset: Reset device
+ * @vdev: vdpa device
+ * Returns integer: success (0) or error (< 0)
* @get_config_size: Get the size of the configuration space
* @vdev: vdpa device
* Returns size_t: configuration size
u32 (*get_vendor_id)(struct vdpa_device *vdev);
u8 (*get_status)(struct vdpa_device *vdev);
void (*set_status)(struct vdpa_device *vdev, u8 status);
+ int (*reset)(struct vdpa_device *vdev);
size_t (*get_config_size)(struct vdpa_device *vdev);
void (*get_config)(struct vdpa_device *vdev, unsigned int offset,
void *buf, unsigned int len);
/* DMA ops */
int (*set_map)(struct vdpa_device *vdev, struct vhost_iotlb *iotlb);
int (*dma_map)(struct vdpa_device *vdev, u64 iova, u64 size,
- u64 pa, u32 perm);
+ u64 pa, u32 perm, void *opaque);
int (*dma_unmap)(struct vdpa_device *vdev, u64 iova, u64 size);
/* Free device resources */
const struct vdpa_config_ops *config,
size_t size, const char *name);
+/**
+ * vdpa_alloc_device - allocate and initilaize a vDPA device
+ *
+ * @dev_struct: the type of the parent structure
+ * @member: the name of struct vdpa_device within the @dev_struct
+ * @parent: the parent device
+ * @config: the bus operations that is supported by this device
+ * @name: name of the vdpa device
+ *
+ * Return allocated data structure or ERR_PTR upon error
+ */
#define vdpa_alloc_device(dev_struct, member, parent, config, name) \
container_of(__vdpa_alloc_device( \
parent, config, \
return vdev->dma_dev;
}
-static inline void vdpa_reset(struct vdpa_device *vdev)
+static inline int vdpa_reset(struct vdpa_device *vdev)
{
- const struct vdpa_config_ops *ops = vdev->config;
+ const struct vdpa_config_ops *ops = vdev->config;
vdev->features_valid = false;
- ops->set_status(vdev, 0);
+ return ops->reset(vdev);
}
static inline int vdpa_set_features(struct vdpa_device *vdev, u64 features)
{
- const struct vdpa_config_ops *ops = vdev->config;
+ const struct vdpa_config_ops *ops = vdev->config;
vdev->features_valid = true;
- return ops->set_features(vdev, features);
+ return ops->set_features(vdev, features);
}
-
-static inline void vdpa_get_config(struct vdpa_device *vdev, unsigned offset,
- void *buf, unsigned int len)
+static inline void vdpa_get_config(struct vdpa_device *vdev,
+ unsigned int offset, void *buf,
+ unsigned int len)
{
- const struct vdpa_config_ops *ops = vdev->config;
+ const struct vdpa_config_ops *ops = vdev->config;
/*
* Config accesses aren't supposed to trigger before features are set.