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authorDragos Tatulea <dtatulea@nvidia.com>2023-10-18 20:14:49 +0300
committerMichael S. Tsirkin <mst@redhat.com>2023-11-01 16:19:56 +0300
commit1b3ce9576f169ce2122ab98b39bf2357d377ee5b (patch)
tree1b94810a0b2f5d0c6734ee5b9260cd10ab19aaa7 /drivers/vdpa
parent07a2da402416891c97335b79a00f23e06549c578 (diff)
downloadlinux-1b3ce9576f169ce2122ab98b39bf2357d377ee5b.tar.xz
vdpa/mlx5: Allow creation/deletion of any given mr struct
This patch adapts the mr creation/deletion code to be able to work with any given mr struct pointer. All the APIs are adapted to take an extra parameter for the mr. mlx5_vdpa_create/delete_mr doesn't need a ASID parameter anymore. The check is done in the caller instead (mlx5_set_map). This change is needed for a followup patch which will introduce an additional mr for the vq descriptor data. Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com> Acked-by: Eugenio PĂ©rez <eperezma@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20231018171456.1624030-12-dtatulea@nvidia.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com> Tested-by: Si-Wei Liu <si-wei.liu@oracle.com> Tested-by: Lei Yang <leiyang@redhat.com>
Diffstat (limited to 'drivers/vdpa')
-rw-r--r--drivers/vdpa/mlx5/core/mlx5_vdpa.h8
-rw-r--r--drivers/vdpa/mlx5/core/mr.c53
-rw-r--r--drivers/vdpa/mlx5/net/mlx5_vnet.c10
3 files changed, 36 insertions, 35 deletions
diff --git a/drivers/vdpa/mlx5/core/mlx5_vdpa.h b/drivers/vdpa/mlx5/core/mlx5_vdpa.h
index e1e6e7aba50e..01d4ee58ccb1 100644
--- a/drivers/vdpa/mlx5/core/mlx5_vdpa.h
+++ b/drivers/vdpa/mlx5/core/mlx5_vdpa.h
@@ -116,10 +116,12 @@ int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, u32 *mkey, u32 *in,
int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, u32 mkey);
int mlx5_vdpa_handle_set_map(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
bool *change_map, unsigned int asid);
-int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
- unsigned int asid);
+int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
+ struct mlx5_vdpa_mr *mr,
+ struct vhost_iotlb *iotlb);
void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev);
-void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid);
+void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev,
+ struct mlx5_vdpa_mr *mr);
int mlx5_vdpa_update_cvq_iotlb(struct mlx5_vdpa_dev *mvdev,
struct vhost_iotlb *iotlb,
unsigned int asid);
diff --git a/drivers/vdpa/mlx5/core/mr.c b/drivers/vdpa/mlx5/core/mr.c
index 00dcce190a1f..6f29e8eaabb1 100644
--- a/drivers/vdpa/mlx5/core/mr.c
+++ b/drivers/vdpa/mlx5/core/mr.c
@@ -301,10 +301,13 @@ static void unmap_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct
sg_free_table(&mr->sg_head);
}
-static int add_direct_chain(struct mlx5_vdpa_dev *mvdev, u64 start, u64 size, u8 perm,
+static int add_direct_chain(struct mlx5_vdpa_dev *mvdev,
+ struct mlx5_vdpa_mr *mr,
+ u64 start,
+ u64 size,
+ u8 perm,
struct vhost_iotlb *iotlb)
{
- struct mlx5_vdpa_mr *mr = &mvdev->mr;
struct mlx5_vdpa_direct_mr *dmr;
struct mlx5_vdpa_direct_mr *n;
LIST_HEAD(tmp);
@@ -354,9 +357,10 @@ err_alloc:
* indirect memory key that provides access to the enitre address space given
* by iotlb.
*/
-static int create_user_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb)
+static int create_user_mr(struct mlx5_vdpa_dev *mvdev,
+ struct mlx5_vdpa_mr *mr,
+ struct vhost_iotlb *iotlb)
{
- struct mlx5_vdpa_mr *mr = &mvdev->mr;
struct mlx5_vdpa_direct_mr *dmr;
struct mlx5_vdpa_direct_mr *n;
struct vhost_iotlb_map *map;
@@ -384,7 +388,7 @@ static int create_user_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb
LOG_MAX_KLM_SIZE);
mr->num_klms += nnuls;
}
- err = add_direct_chain(mvdev, ps, pe - ps, pperm, iotlb);
+ err = add_direct_chain(mvdev, mr, ps, pe - ps, pperm, iotlb);
if (err)
goto err_chain;
}
@@ -393,7 +397,7 @@ static int create_user_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb
pperm = map->perm;
}
}
- err = add_direct_chain(mvdev, ps, pe - ps, pperm, iotlb);
+ err = add_direct_chain(mvdev, mr, ps, pe - ps, pperm, iotlb);
if (err)
goto err_chain;
@@ -489,13 +493,8 @@ static void destroy_user_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr
}
}
-static void _mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid)
+static void _mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr)
{
- struct mlx5_vdpa_mr *mr = &mvdev->mr;
-
- if (mvdev->group2asid[MLX5_VDPA_DATAVQ_GROUP] != asid)
- return;
-
if (!mr->initialized)
return;
@@ -507,38 +506,33 @@ static void _mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid
mr->initialized = false;
}
-void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid)
+void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev,
+ struct mlx5_vdpa_mr *mr)
{
- struct mlx5_vdpa_mr *mr = &mvdev->mr;
-
mutex_lock(&mr->mkey_mtx);
- _mlx5_vdpa_destroy_mr(mvdev, asid);
+ _mlx5_vdpa_destroy_mr(mvdev, mr);
mutex_unlock(&mr->mkey_mtx);
}
void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev)
{
- mlx5_vdpa_destroy_mr(mvdev, mvdev->group2asid[MLX5_VDPA_DATAVQ_GROUP]);
+ mlx5_vdpa_destroy_mr(mvdev, &mvdev->mr);
prune_iotlb(mvdev);
}
static int _mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
- struct vhost_iotlb *iotlb,
- unsigned int asid)
+ struct mlx5_vdpa_mr *mr,
+ struct vhost_iotlb *iotlb)
{
- struct mlx5_vdpa_mr *mr = &mvdev->mr;
int err;
- if (mvdev->group2asid[MLX5_VDPA_DATAVQ_GROUP] != asid)
- return 0;
-
if (mr->initialized)
return 0;
if (iotlb)
- err = create_user_mr(mvdev, iotlb);
+ err = create_user_mr(mvdev, mr, iotlb);
else
err = create_dma_mr(mvdev, mr);
@@ -550,13 +544,14 @@ static int _mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
return 0;
}
-int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
- unsigned int asid)
+int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
+ struct mlx5_vdpa_mr *mr,
+ struct vhost_iotlb *iotlb)
{
int err;
mutex_lock(&mvdev->mr.mkey_mtx);
- err = _mlx5_vdpa_create_mr(mvdev, iotlb, asid);
+ err = _mlx5_vdpa_create_mr(mvdev, mr, iotlb);
mutex_unlock(&mvdev->mr.mkey_mtx);
return err;
}
@@ -574,7 +569,7 @@ int mlx5_vdpa_handle_set_map(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *io
*change_map = true;
}
if (!*change_map)
- err = _mlx5_vdpa_create_mr(mvdev, iotlb, asid);
+ err = _mlx5_vdpa_create_mr(mvdev, mr, iotlb);
mutex_unlock(&mr->mkey_mtx);
return err;
@@ -603,7 +598,7 @@ int mlx5_vdpa_create_dma_mr(struct mlx5_vdpa_dev *mvdev)
{
int err;
- err = mlx5_vdpa_create_mr(mvdev, NULL, 0);
+ err = mlx5_vdpa_create_mr(mvdev, &mvdev->mr, NULL);
if (err)
return err;
diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index f3f8b915f612..9b1f0d084d24 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -2684,8 +2684,8 @@ static int mlx5_vdpa_change_map(struct mlx5_vdpa_dev *mvdev,
goto err_mr;
teardown_driver(ndev);
- mlx5_vdpa_destroy_mr(mvdev, asid);
- err = mlx5_vdpa_create_mr(mvdev, iotlb, asid);
+ mlx5_vdpa_destroy_mr(mvdev, &mvdev->mr);
+ err = mlx5_vdpa_create_mr(mvdev, &mvdev->mr, iotlb);
if (err)
goto err_mr;
@@ -2700,7 +2700,7 @@ static int mlx5_vdpa_change_map(struct mlx5_vdpa_dev *mvdev,
return 0;
err_setup:
- mlx5_vdpa_destroy_mr(mvdev, asid);
+ mlx5_vdpa_destroy_mr(mvdev, &mvdev->mr);
err_mr:
return err;
}
@@ -2922,6 +2922,9 @@ static int set_map_data(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
bool change_map;
int err;
+ if (mvdev->group2asid[MLX5_VDPA_DATAVQ_GROUP] != asid)
+ goto end;
+
err = mlx5_vdpa_handle_set_map(mvdev, iotlb, &change_map, asid);
if (err) {
mlx5_vdpa_warn(mvdev, "set map failed(%d)\n", err);
@@ -2934,6 +2937,7 @@ static int set_map_data(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
return err;
}
+end:
return mlx5_vdpa_update_cvq_iotlb(mvdev, iotlb, asid);
}