From: jiangdongxu jiangdongxu1@huawei.com
virt inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I86ITO
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When vdpa hardware is used, some hardware initialization may be required. Currently, qemu connects to vdpa devices through the vhost framework. Since qemu opens the vhost device, the vdpa device cannot sense the action of qemu opening, which may cause the hardware status to be incorrect.
Add the interface parameter state to the vdpa reset interface, which respectively identifies the reset when the device is turned on/off and the virtio reset issued by the virtual machine.
Signed-off-by: jiangdongxu jiangdongxu1@huawei.com --- drivers/vdpa/ifcvf/ifcvf_main.c | 2 +- drivers/vdpa/mlx5/net/mlx5_vnet.c | 2 +- drivers/vdpa/solidrun/snet_main.c | 2 +- drivers/vdpa/vdpa_sim/vdpa_sim.c | 2 +- drivers/vdpa/vdpa_user/vduse_dev.c | 2 +- drivers/vdpa/virtio_pci/vp_vdpa.c | 2 +- drivers/vhost/vdpa.c | 10 +++++----- drivers/virtio/virtio_vdpa.c | 2 +- include/linux/vdpa.h | 16 +++++++++++++--- 9 files changed, 25 insertions(+), 15 deletions(-)
diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c index e98fa8100f3c..ec72505bbe1a 100644 --- a/drivers/vdpa/ifcvf/ifcvf_main.c +++ b/drivers/vdpa/ifcvf/ifcvf_main.c @@ -434,7 +434,7 @@ static void ifcvf_vdpa_set_status(struct vdpa_device *vdpa_dev, u8 status) ifcvf_set_status(vf, status); }
-static int ifcvf_vdpa_reset(struct vdpa_device *vdpa_dev) +static int ifcvf_vdpa_reset(struct vdpa_device *vdpa_dev, int state) { struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev); u8 status = ifcvf_get_status(vf); diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c index 946488b8989f..b79f14b5b970 100644 --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c @@ -2856,7 +2856,7 @@ static void init_group_to_asid_map(struct mlx5_vdpa_dev *mvdev) mvdev->group2asid[i] = 0; }
-static int mlx5_vdpa_reset(struct vdpa_device *vdev) +static int mlx5_vdpa_reset(struct vdpa_device *vdev, int state) { struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev); struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev); diff --git a/drivers/vdpa/solidrun/snet_main.c b/drivers/vdpa/solidrun/snet_main.c index 99428a04068d..c0ddeb9ded11 100644 --- a/drivers/vdpa/solidrun/snet_main.c +++ b/drivers/vdpa/solidrun/snet_main.c @@ -245,7 +245,7 @@ static int snet_reset_dev(struct snet *snet) return 0; }
-static int snet_reset(struct vdpa_device *vdev) +static int snet_reset(struct vdpa_device *vdev, int state) { struct snet *snet = vdpa_to_snet(vdev);
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 76d41058add9..c2ec1bc83170 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -480,7 +480,7 @@ static void vdpasim_set_status(struct vdpa_device *vdpa, u8 status) mutex_unlock(&vdpasim->mutex); }
-static int vdpasim_reset(struct vdpa_device *vdpa) +static int vdpasim_reset(struct vdpa_device *vdpa, int state) { struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c index df7869537ef1..f0c48f9efe4e 100644 --- a/drivers/vdpa/vdpa_user/vduse_dev.c +++ b/drivers/vdpa/vdpa_user/vduse_dev.c @@ -704,7 +704,7 @@ static void vduse_vdpa_set_config(struct vdpa_device *vdpa, unsigned int offset, /* Now we only support read-only configuration space */ }
-static int vduse_vdpa_reset(struct vdpa_device *vdpa) +static int vduse_vdpa_reset(struct vdpa_device *vdpa, int state) { struct vduse_dev *dev = vdpa_to_vduse(vdpa); int ret = vduse_dev_set_status(dev, 0); diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c b/drivers/vdpa/virtio_pci/vp_vdpa.c index 281287fae89f..0e16dd08968b 100644 --- a/drivers/vdpa/virtio_pci/vp_vdpa.c +++ b/drivers/vdpa/virtio_pci/vp_vdpa.c @@ -222,7 +222,7 @@ static void vp_vdpa_set_status(struct vdpa_device *vdpa, u8 status) vp_modern_set_status(mdev, status); }
-static int vp_vdpa_reset(struct vdpa_device *vdpa) +static int vp_vdpa_reset(struct vdpa_device *vdpa, int state) { struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa); struct virtio_pci_modern_device *mdev = vp_vdpa_to_mdev(vp_vdpa); diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 5f59072fe307..7bef364935b2 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -211,13 +211,13 @@ static void vhost_vdpa_unsetup_vq_irq(struct vhost_vdpa *v, u16 qid) irq_bypass_unregister_producer(&vq->call_ctx.producer); }
-static int vhost_vdpa_reset(struct vhost_vdpa *v) +static int vhost_vdpa_reset(struct vhost_vdpa *v, int state) { struct vdpa_device *vdpa = v->vdpa;
v->in_batch = 0;
- return vdpa_reset(vdpa); + return vdpa_reset(vdpa, state); }
static long vhost_vdpa_bind_mm(struct vhost_vdpa *v) @@ -296,7 +296,7 @@ static long vhost_vdpa_set_status(struct vhost_vdpa *v, u8 __user *statusp) vhost_vdpa_unsetup_vq_irq(v, i);
if (status == 0) { - ret = vdpa_reset(vdpa); + ret = vdpa_reset(vdpa, VDPA_DEV_RESET_VIRTIO); if (ret) return ret; } else @@ -1497,7 +1497,7 @@ static int vhost_vdpa_open(struct inode *inode, struct file *filep) return r;
nvqs = v->nvqs; - r = vhost_vdpa_reset(v); + r = vhost_vdpa_reset(v, VDPA_DEV_RESET_OPEN); if (r) goto err;
@@ -1543,7 +1543,7 @@ static int vhost_vdpa_release(struct inode *inode, struct file *filep) mutex_lock(&d->mutex); filep->private_data = NULL; vhost_vdpa_clean_irq(v); - vhost_vdpa_reset(v); + vhost_vdpa_reset(v, VDPA_DEV_RESET_CLOSE); vhost_dev_stop(&v->vdev); vhost_vdpa_unbind_mm(v); vhost_vdpa_config_put(v); diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c index 06ce6d8c2e00..13f69bfb9c98 100644 --- a/drivers/virtio/virtio_vdpa.c +++ b/drivers/virtio/virtio_vdpa.c @@ -100,7 +100,7 @@ static void virtio_vdpa_reset(struct virtio_device *vdev) { struct vdpa_device *vdpa = vd_get_vdpa(vdev);
- vdpa_reset(vdpa); + vdpa_reset(vdpa, VDPA_DEV_RESET_VIRTIO); }
static bool virtio_vdpa_notify(struct virtqueue *vq) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 1ed264ec1ebb..3120a1a600dd 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -129,6 +129,12 @@ struct vdpa_map_file { u64 offset; };
+enum vdpa_reset_state { + VDPA_DEV_RESET_VIRTIO = 0, + VDPA_DEV_RESET_OPEN = 1, + VDPA_DEV_RESET_CLOSE = 2, +}; + /** * struct vdpa_config_ops - operations for configuring a vDPA device. * Note: vDPA device drivers are required to implement all of the @@ -241,6 +247,10 @@ struct vdpa_map_file { * @status: virtio device status * @reset: Reset device * @vdev: vdpa device + * @state: state for reset + * VDPA_DEV_RESET_VIRTIO for virtio reset + * VDPA_DEV_RESET_OPEN for vhost-vdpa device open + * VDPA_DEV_RESET_CLOSE for vhost-vdpa device close * Returns integer: success (0) or error (< 0) * @suspend: Suspend the device (optional) * @vdev: vdpa device @@ -397,7 +407,7 @@ 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); + int (*reset)(struct vdpa_device *vdev, int state); int (*suspend)(struct vdpa_device *vdev); int (*resume)(struct vdpa_device *vdev); size_t (*get_config_size)(struct vdpa_device *vdev); @@ -525,14 +535,14 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev) return vdev->dma_dev; }
-static inline int vdpa_reset(struct vdpa_device *vdev) +static inline int vdpa_reset(struct vdpa_device *vdev, int state) { const struct vdpa_config_ops *ops = vdev->config; int ret;
down_write(&vdev->cf_lock); vdev->features_valid = false; - ret = ops->reset(vdev); + ret = ops->reset(vdev, state); up_write(&vdev->cf_lock); return ret; }