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authorXie Yongji <xieyongji@bytedance.com>2021-08-31 12:36:26 +0200
committerMichael S. Tsirkin <mst@redhat.com>2021-09-06 13:20:57 +0200
commit0686082dbf7a204ca0fab326a820779e31666639 (patch)
tree889a7e8628defb413e7863264a62781869e1332c /include
parentvdpa: Fix some coding style issues (diff)
downloadlinux-0686082dbf7a204ca0fab326a820779e31666639.tar.xz
linux-0686082dbf7a204ca0fab326a820779e31666639.zip
vdpa: Add reset callback in vdpa_config_ops
This adds a new callback to support device specific reset behavior. The vdpa bus driver will call the reset function instead of setting status to zero during resetting. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Link: https://lore.kernel.org/r/20210831103634.33-6-xieyongji@bytedance.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/vdpa.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 8ae1134070eb..e1eae8c7483d 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -171,6 +171,9 @@ struct vdpa_iova_range {
* @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
@@ -255,6 +258,7 @@ struct vdpa_config_ops {
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);
@@ -348,12 +352,12 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev)
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;
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)