mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-01-23 16:53:58 -05:00
vhost,virtio,vdpa: features, fixes, cleanups
vdpa/mlx5: VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK new maintainer vdpa: support for vq descriptor mappings decouple reset of iotlb mapping from device reset fixes, cleanups all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmVCUMYPHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRp4L0H/RKcnNXPRqzhhBI1XVQ11Z8CO8WjovcmJalu ADHNEGmvuWnY79fp9eLiZ4iVaTx1qbzqIB5Q500DJ65jh71W7UQ8ww6CGjNUoRGs Zoe4G09WoOf4bvDZZzVV7ml/AzMdsHWSZK8pxY3QI9CsC9Zfp9hg20QYxPylCqYx SIJx7w2MkoojfmtOHRx1WUxaQz99yfU4Z0C5PxtRE1HGN6/a1aY0P0CAl5jq8uCK U5sCRsfCmP7VKlspeEddMiPA35ADbCiysSobCbwGVQEs5cHpMUX7KWa+oV0tF/PY 9uyJb2rJy6zG3tXmL4XNib665ZR86HX6qiWRfm2nBQQStuHaJyg= =mXgo -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio updates from Michael Tsirkin: "vhost,virtio,vdpa: features, fixes, cleanups. vdpa/mlx5: - VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK - new maintainer vdpa: - support for vq descriptor mappings - decouple reset of iotlb mapping from device reset and fixes, cleanups all over the place" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (34 commits) vdpa_sim: implement .reset_map support vdpa/mlx5: implement .reset_map driver op vhost-vdpa: clean iotlb map during reset for older userspace vdpa: introduce .compat_reset operation callback vhost-vdpa: introduce IOTLB_PERSIST backend feature bit vhost-vdpa: reset vendor specific mapping to initial state in .release vdpa: introduce .reset_map operation callback virtio_pci: add check for common cfg size virtio-blk: fix implicit overflow on virtio_max_dma_size virtio_pci: add build offset check for the new common cfg items virtio: add definition of VIRTIO_F_NOTIF_CONFIG_DATA feature bit vduse: make vduse_class constant vhost-scsi: Spelling s/preceeding/preceding/g virtio: kdoc for struct virtio_pci_modern_device vdpa: Update sysfs ABI documentation MAINTAINERS: Add myself as mlx5_vdpa driver virtio-balloon: correct the comment of virtballoon_migratepage() mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK vdpa/mlx5: Update cvq iotlb mapping on ASID change vdpa/mlx5: Make iotlb helper functions more generic ...
This commit is contained in:
Linus Torvalds
commit
77fa2fbe87
22 changed files with 546 additions and 186 deletions
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@ -1,4 +1,4 @@
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What: /sys/bus/vdpa/driver_autoprobe
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What: /sys/bus/vdpa/drivers_autoprobe
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Date: March 2020
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Contact: virtualization@lists.linux-foundation.org
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Description:
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@ -17,7 +17,7 @@ Description:
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Writing a device name to this file will cause the kernel binds
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devices to a compatible driver.
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This can be useful when /sys/bus/vdpa/driver_autoprobe is
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This can be useful when /sys/bus/vdpa/drivers_autoprobe is
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disabled.
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What: /sys/bus/vdpa/drivers/.../bind
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@ -13790,6 +13790,12 @@ F: drivers/infiniband/hw/mlx5/
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F: include/linux/mlx5/
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F: include/uapi/rdma/mlx5-abi.h
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MELLANOX MLX5 VDPA DRIVER
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M: Dragos Tatulea <dtatulea@nvidia.com>
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L: virtualization@lists.linux-foundation.org
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S: Supported
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F: drivers/vdpa/mlx5/
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MELLANOX MLXCPLD I2C AND MUX DRIVER
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M: Vadim Pasternak <vadimp@nvidia.com>
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M: Michael Shych <michaelsh@nvidia.com>
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@ -1311,6 +1311,7 @@ static int virtblk_probe(struct virtio_device *vdev)
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u16 min_io_size;
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u8 physical_block_exp, alignment_offset;
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unsigned int queue_depth;
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size_t max_dma_size;
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if (!vdev->config->get) {
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dev_err(&vdev->dev, "%s failure: config access disabled\n",
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@ -1409,7 +1410,8 @@ static int virtblk_probe(struct virtio_device *vdev)
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/* No real sector limit. */
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blk_queue_max_hw_sectors(q, UINT_MAX);
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max_size = virtio_max_dma_size(vdev);
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max_dma_size = virtio_max_dma_size(vdev);
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max_size = max_dma_size > U32_MAX ? U32_MAX : max_dma_size;
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/* Host can optionally specify maximum segment size and number of
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* segments. */
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@ -31,11 +31,9 @@ struct mlx5_vdpa_mr {
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struct list_head head;
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unsigned long num_directs;
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unsigned long num_klms;
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/* state of dvq mr */
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bool initialized;
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/* serialize mkey creation and destruction */
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struct mutex mkey_mtx;
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struct vhost_iotlb *iotlb;
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bool user_mr;
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};
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@ -74,11 +72,12 @@ struct mlx5_vdpa_wq_ent {
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enum {
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MLX5_VDPA_DATAVQ_GROUP,
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MLX5_VDPA_CVQ_GROUP,
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MLX5_VDPA_DATAVQ_DESC_GROUP,
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MLX5_VDPA_NUMVQ_GROUPS
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};
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enum {
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MLX5_VDPA_NUM_AS = MLX5_VDPA_NUMVQ_GROUPS
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MLX5_VDPA_NUM_AS = 2
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};
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struct mlx5_vdpa_dev {
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@ -93,7 +92,9 @@ struct mlx5_vdpa_dev {
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u16 max_idx;
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u32 generation;
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struct mlx5_vdpa_mr mr;
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struct mlx5_vdpa_mr *mr[MLX5_VDPA_NUM_AS];
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/* serialize mr access */
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struct mutex mr_mtx;
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struct mlx5_control_vq cvq;
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struct workqueue_struct *wq;
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unsigned int group2asid[MLX5_VDPA_NUMVQ_GROUPS];
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@ -114,12 +115,19 @@ void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev);
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int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, u32 *mkey, u32 *in,
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int inlen);
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int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, u32 mkey);
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int mlx5_vdpa_handle_set_map(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
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bool *change_map, unsigned int asid);
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int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
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unsigned int asid);
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void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev);
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void mlx5_vdpa_destroy_mr_asid(struct mlx5_vdpa_dev *mvdev, unsigned int asid);
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struct mlx5_vdpa_mr *mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
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struct vhost_iotlb *iotlb);
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void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev);
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void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *mr);
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void mlx5_vdpa_update_mr(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *mr,
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unsigned int asid);
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int mlx5_vdpa_update_cvq_iotlb(struct mlx5_vdpa_dev *mvdev,
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struct vhost_iotlb *iotlb,
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unsigned int asid);
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int mlx5_vdpa_create_dma_mr(struct mlx5_vdpa_dev *mvdev);
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int mlx5_vdpa_reset_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid);
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#define mlx5_vdpa_warn(__dev, format, ...) \
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dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \
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@ -301,10 +301,13 @@ static void unmap_direct_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_direct
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sg_free_table(&mr->sg_head);
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}
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static int add_direct_chain(struct mlx5_vdpa_dev *mvdev, u64 start, u64 size, u8 perm,
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static int add_direct_chain(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *mr,
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u64 start,
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u64 size,
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u8 perm,
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struct vhost_iotlb *iotlb)
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{
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struct mlx5_vdpa_mr *mr = &mvdev->mr;
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struct mlx5_vdpa_direct_mr *dmr;
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struct mlx5_vdpa_direct_mr *n;
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LIST_HEAD(tmp);
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@ -354,9 +357,10 @@ err_alloc:
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* indirect memory key that provides access to the enitre address space given
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* by iotlb.
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*/
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static int create_user_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb)
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static int create_user_mr(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *mr,
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struct vhost_iotlb *iotlb)
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{
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struct mlx5_vdpa_mr *mr = &mvdev->mr;
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struct mlx5_vdpa_direct_mr *dmr;
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struct mlx5_vdpa_direct_mr *n;
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struct vhost_iotlb_map *map;
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@ -384,7 +388,7 @@ static int create_user_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb
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LOG_MAX_KLM_SIZE);
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mr->num_klms += nnuls;
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}
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err = add_direct_chain(mvdev, ps, pe - ps, pperm, iotlb);
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err = add_direct_chain(mvdev, mr, ps, pe - ps, pperm, iotlb);
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if (err)
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goto err_chain;
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}
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@ -393,7 +397,7 @@ static int create_user_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb
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pperm = map->perm;
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}
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}
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err = add_direct_chain(mvdev, ps, pe - ps, pperm, iotlb);
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err = add_direct_chain(mvdev, mr, ps, pe - ps, pperm, iotlb);
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if (err)
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goto err_chain;
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@ -450,20 +454,23 @@ static void destroy_dma_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr)
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mlx5_vdpa_destroy_mkey(mvdev, mr->mkey);
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}
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static int dup_iotlb(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *src)
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static int dup_iotlb(struct vhost_iotlb *dst, struct vhost_iotlb *src)
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{
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struct vhost_iotlb_map *map;
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u64 start = 0, last = ULLONG_MAX;
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int err;
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if (dst == src)
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return -EINVAL;
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if (!src) {
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err = vhost_iotlb_add_range(mvdev->cvq.iotlb, start, last, start, VHOST_ACCESS_RW);
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err = vhost_iotlb_add_range(dst, start, last, start, VHOST_ACCESS_RW);
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return err;
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}
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for (map = vhost_iotlb_itree_first(src, start, last); map;
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map = vhost_iotlb_itree_next(map, start, last)) {
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err = vhost_iotlb_add_range(mvdev->cvq.iotlb, map->start, map->last,
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err = vhost_iotlb_add_range(dst, map->start, map->last,
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map->addr, map->perm);
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if (err)
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return err;
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@ -471,9 +478,9 @@ static int dup_iotlb(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *src)
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return 0;
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}
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static void prune_iotlb(struct mlx5_vdpa_dev *mvdev)
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static void prune_iotlb(struct vhost_iotlb *iotlb)
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{
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vhost_iotlb_del_range(mvdev->cvq.iotlb, 0, ULLONG_MAX);
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vhost_iotlb_del_range(iotlb, 0, ULLONG_MAX);
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}
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static void destroy_user_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr)
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@ -489,133 +496,169 @@ static void destroy_user_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr
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}
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}
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static void _mlx5_vdpa_destroy_cvq_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid)
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static void _mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr)
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{
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if (mvdev->group2asid[MLX5_VDPA_CVQ_GROUP] != asid)
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return;
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prune_iotlb(mvdev);
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}
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static void _mlx5_vdpa_destroy_dvq_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid)
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{
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struct mlx5_vdpa_mr *mr = &mvdev->mr;
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if (mvdev->group2asid[MLX5_VDPA_DATAVQ_GROUP] != asid)
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return;
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if (!mr->initialized)
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return;
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if (mr->user_mr)
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destroy_user_mr(mvdev, mr);
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else
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destroy_dma_mr(mvdev, mr);
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mr->initialized = false;
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vhost_iotlb_free(mr->iotlb);
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}
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void mlx5_vdpa_destroy_mr_asid(struct mlx5_vdpa_dev *mvdev, unsigned int asid)
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void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *mr)
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{
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struct mlx5_vdpa_mr *mr = &mvdev->mr;
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if (!mr)
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return;
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mutex_lock(&mr->mkey_mtx);
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mutex_lock(&mvdev->mr_mtx);
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_mlx5_vdpa_destroy_dvq_mr(mvdev, asid);
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_mlx5_vdpa_destroy_cvq_mr(mvdev, asid);
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_mlx5_vdpa_destroy_mr(mvdev, mr);
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mutex_unlock(&mr->mkey_mtx);
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for (int i = 0; i < MLX5_VDPA_NUM_AS; i++) {
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if (mvdev->mr[i] == mr)
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mvdev->mr[i] = NULL;
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}
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mutex_unlock(&mvdev->mr_mtx);
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kfree(mr);
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}
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void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev)
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void mlx5_vdpa_update_mr(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *new_mr,
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unsigned int asid)
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{
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mlx5_vdpa_destroy_mr_asid(mvdev, mvdev->group2asid[MLX5_VDPA_CVQ_GROUP]);
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||||
mlx5_vdpa_destroy_mr_asid(mvdev, mvdev->group2asid[MLX5_VDPA_DATAVQ_GROUP]);
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struct mlx5_vdpa_mr *old_mr = mvdev->mr[asid];
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||||
|
||||
mutex_lock(&mvdev->mr_mtx);
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||||
|
||||
mvdev->mr[asid] = new_mr;
|
||||
if (old_mr) {
|
||||
_mlx5_vdpa_destroy_mr(mvdev, old_mr);
|
||||
kfree(old_mr);
|
||||
}
|
||||
|
||||
mutex_unlock(&mvdev->mr_mtx);
|
||||
|
||||
}
|
||||
|
||||
static int _mlx5_vdpa_create_cvq_mr(struct mlx5_vdpa_dev *mvdev,
|
||||
struct vhost_iotlb *iotlb,
|
||||
unsigned int asid)
|
||||
void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev)
|
||||
{
|
||||
if (mvdev->group2asid[MLX5_VDPA_CVQ_GROUP] != asid)
|
||||
return 0;
|
||||
for (int i = 0; i < MLX5_VDPA_NUM_AS; i++)
|
||||
mlx5_vdpa_destroy_mr(mvdev, mvdev->mr[i]);
|
||||
|
||||
return dup_iotlb(mvdev, iotlb);
|
||||
prune_iotlb(mvdev->cvq.iotlb);
|
||||
}
|
||||
|
||||
static int _mlx5_vdpa_create_dvq_mr(struct mlx5_vdpa_dev *mvdev,
|
||||
struct vhost_iotlb *iotlb,
|
||||
unsigned int asid)
|
||||
static int _mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
|
||||
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);
|
||||
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
mr->initialized = true;
|
||||
mr->iotlb = vhost_iotlb_alloc(0, 0);
|
||||
if (!mr->iotlb) {
|
||||
err = -ENOMEM;
|
||||
goto err_mr;
|
||||
}
|
||||
|
||||
err = dup_iotlb(mr->iotlb, iotlb);
|
||||
if (err)
|
||||
goto err_iotlb;
|
||||
|
||||
return 0;
|
||||
|
||||
err_iotlb:
|
||||
vhost_iotlb_free(mr->iotlb);
|
||||
|
||||
err_mr:
|
||||
if (iotlb)
|
||||
destroy_user_mr(mvdev, mr);
|
||||
else
|
||||
destroy_dma_mr(mvdev, mr);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int _mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
|
||||
struct vhost_iotlb *iotlb, unsigned int asid)
|
||||
struct mlx5_vdpa_mr *mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
|
||||
struct vhost_iotlb *iotlb)
|
||||
{
|
||||
struct mlx5_vdpa_mr *mr;
|
||||
int err;
|
||||
|
||||
err = _mlx5_vdpa_create_dvq_mr(mvdev, iotlb, asid);
|
||||
if (err)
|
||||
return err;
|
||||
mr = kzalloc(sizeof(*mr), GFP_KERNEL);
|
||||
if (!mr)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
mutex_lock(&mvdev->mr_mtx);
|
||||
err = _mlx5_vdpa_create_mr(mvdev, mr, iotlb);
|
||||
mutex_unlock(&mvdev->mr_mtx);
|
||||
|
||||
err = _mlx5_vdpa_create_cvq_mr(mvdev, iotlb, asid);
|
||||
if (err)
|
||||
goto out_err;
|
||||
|
||||
return 0;
|
||||
return mr;
|
||||
|
||||
out_err:
|
||||
_mlx5_vdpa_destroy_dvq_mr(mvdev, asid);
|
||||
|
||||
return err;
|
||||
kfree(mr);
|
||||
return ERR_PTR(err);
|
||||
}
|
||||
|
||||
int mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
|
||||
unsigned int asid)
|
||||
int mlx5_vdpa_update_cvq_iotlb(struct mlx5_vdpa_dev *mvdev,
|
||||
struct vhost_iotlb *iotlb,
|
||||
unsigned int asid)
|
||||
{
|
||||
int err;
|
||||
|
||||
mutex_lock(&mvdev->mr.mkey_mtx);
|
||||
err = _mlx5_vdpa_create_mr(mvdev, iotlb, asid);
|
||||
mutex_unlock(&mvdev->mr.mkey_mtx);
|
||||
if (mvdev->group2asid[MLX5_VDPA_CVQ_GROUP] != asid)
|
||||
return 0;
|
||||
|
||||
spin_lock(&mvdev->cvq.iommu_lock);
|
||||
|
||||
prune_iotlb(mvdev->cvq.iotlb);
|
||||
err = dup_iotlb(mvdev->cvq.iotlb, iotlb);
|
||||
|
||||
spin_unlock(&mvdev->cvq.iommu_lock);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
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_dma_mr(struct mlx5_vdpa_dev *mvdev)
|
||||
{
|
||||
struct mlx5_vdpa_mr *mr = &mvdev->mr;
|
||||
int err = 0;
|
||||
struct mlx5_vdpa_mr *mr;
|
||||
|
||||
*change_map = false;
|
||||
mutex_lock(&mr->mkey_mtx);
|
||||
if (mr->initialized) {
|
||||
mlx5_vdpa_info(mvdev, "memory map update\n");
|
||||
*change_map = true;
|
||||
}
|
||||
if (!*change_map)
|
||||
err = _mlx5_vdpa_create_mr(mvdev, iotlb, asid);
|
||||
mutex_unlock(&mr->mkey_mtx);
|
||||
mr = mlx5_vdpa_create_mr(mvdev, NULL);
|
||||
if (IS_ERR(mr))
|
||||
return PTR_ERR(mr);
|
||||
|
||||
return err;
|
||||
mlx5_vdpa_update_mr(mvdev, mr, 0);
|
||||
|
||||
return mlx5_vdpa_update_cvq_iotlb(mvdev, NULL, 0);
|
||||
}
|
||||
|
||||
int mlx5_vdpa_reset_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid)
|
||||
{
|
||||
if (asid >= MLX5_VDPA_NUM_AS)
|
||||
return -EINVAL;
|
||||
|
||||
mlx5_vdpa_destroy_mr(mvdev, mvdev->mr[asid]);
|
||||
|
||||
if (asid == 0 && MLX5_CAP_GEN(mvdev->mdev, umem_uid_0)) {
|
||||
if (mlx5_vdpa_create_dma_mr(mvdev))
|
||||
mlx5_vdpa_warn(mvdev, "create DMA MR failed\n");
|
||||
} else {
|
||||
mlx5_vdpa_update_cvq_iotlb(mvdev, NULL, asid);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -256,7 +256,7 @@ int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev)
|
|||
mlx5_vdpa_warn(mvdev, "resources already allocated\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
mutex_init(&mvdev->mr.mkey_mtx);
|
||||
mutex_init(&mvdev->mr_mtx);
|
||||
res->uar = mlx5_get_uars_page(mdev);
|
||||
if (IS_ERR(res->uar)) {
|
||||
err = PTR_ERR(res->uar);
|
||||
|
|
@ -301,7 +301,7 @@ err_pd:
|
|||
err_uctx:
|
||||
mlx5_put_uars_page(mdev, res->uar);
|
||||
err_uars:
|
||||
mutex_destroy(&mvdev->mr.mkey_mtx);
|
||||
mutex_destroy(&mvdev->mr_mtx);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
@ -318,6 +318,6 @@ void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev)
|
|||
dealloc_pd(mvdev, res->pdn, res->uid);
|
||||
destroy_uctx(mvdev, res->uid);
|
||||
mlx5_put_uars_page(mvdev->mdev, res->uar);
|
||||
mutex_destroy(&mvdev->mr.mkey_mtx);
|
||||
mutex_destroy(&mvdev->mr_mtx);
|
||||
res->valid = false;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,6 +7,7 @@
|
|||
#include <uapi/linux/virtio_net.h>
|
||||
#include <uapi/linux/virtio_ids.h>
|
||||
#include <uapi/linux/vdpa.h>
|
||||
#include <uapi/linux/vhost_types.h>
|
||||
#include <linux/virtio_config.h>
|
||||
#include <linux/auxiliary_bus.h>
|
||||
#include <linux/mlx5/cq.h>
|
||||
|
|
@ -861,6 +862,9 @@ static int create_virtqueue(struct mlx5_vdpa_net *ndev, struct mlx5_vdpa_virtque
|
|||
{
|
||||
int inlen = MLX5_ST_SZ_BYTES(create_virtio_net_q_in);
|
||||
u32 out[MLX5_ST_SZ_DW(create_virtio_net_q_out)] = {};
|
||||
struct mlx5_vdpa_dev *mvdev = &ndev->mvdev;
|
||||
struct mlx5_vdpa_mr *vq_mr;
|
||||
struct mlx5_vdpa_mr *vq_desc_mr;
|
||||
void *obj_context;
|
||||
u16 mlx_features;
|
||||
void *cmd_hdr;
|
||||
|
|
@ -913,7 +917,14 @@ static int create_virtqueue(struct mlx5_vdpa_net *ndev, struct mlx5_vdpa_virtque
|
|||
MLX5_SET64(virtio_q, vq_ctx, desc_addr, mvq->desc_addr);
|
||||
MLX5_SET64(virtio_q, vq_ctx, used_addr, mvq->device_addr);
|
||||
MLX5_SET64(virtio_q, vq_ctx, available_addr, mvq->driver_addr);
|
||||
MLX5_SET(virtio_q, vq_ctx, virtio_q_mkey, ndev->mvdev.mr.mkey);
|
||||
vq_mr = mvdev->mr[mvdev->group2asid[MLX5_VDPA_DATAVQ_GROUP]];
|
||||
if (vq_mr)
|
||||
MLX5_SET(virtio_q, vq_ctx, virtio_q_mkey, vq_mr->mkey);
|
||||
|
||||
vq_desc_mr = mvdev->mr[mvdev->group2asid[MLX5_VDPA_DATAVQ_DESC_GROUP]];
|
||||
if (vq_desc_mr && MLX5_CAP_DEV_VDPA_EMULATION(mvdev->mdev, desc_group_mkey_supported))
|
||||
MLX5_SET(virtio_q, vq_ctx, desc_group_mkey, vq_desc_mr->mkey);
|
||||
|
||||
MLX5_SET(virtio_q, vq_ctx, umem_1_id, mvq->umem1.id);
|
||||
MLX5_SET(virtio_q, vq_ctx, umem_1_size, mvq->umem1.size);
|
||||
MLX5_SET(virtio_q, vq_ctx, umem_2_id, mvq->umem2.id);
|
||||
|
|
@ -2301,6 +2312,16 @@ static u32 mlx5_vdpa_get_vq_group(struct vdpa_device *vdev, u16 idx)
|
|||
return MLX5_VDPA_DATAVQ_GROUP;
|
||||
}
|
||||
|
||||
static u32 mlx5_vdpa_get_vq_desc_group(struct vdpa_device *vdev, u16 idx)
|
||||
{
|
||||
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
|
||||
|
||||
if (is_ctrl_vq_idx(mvdev, idx))
|
||||
return MLX5_VDPA_CVQ_GROUP;
|
||||
|
||||
return MLX5_VDPA_DATAVQ_DESC_GROUP;
|
||||
}
|
||||
|
||||
static u64 mlx_to_vritio_features(u16 dev_features)
|
||||
{
|
||||
u64 result = 0;
|
||||
|
|
@ -2539,6 +2560,11 @@ static void unregister_link_notifier(struct mlx5_vdpa_net *ndev)
|
|||
flush_workqueue(ndev->mvdev.wq);
|
||||
}
|
||||
|
||||
static u64 mlx5_vdpa_get_backend_features(const struct vdpa_device *vdpa)
|
||||
{
|
||||
return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK);
|
||||
}
|
||||
|
||||
static int mlx5_vdpa_set_driver_features(struct vdpa_device *vdev, u64 features)
|
||||
{
|
||||
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
|
||||
|
|
@ -2673,7 +2699,8 @@ static void restore_channels_info(struct mlx5_vdpa_net *ndev)
|
|||
}
|
||||
|
||||
static int mlx5_vdpa_change_map(struct mlx5_vdpa_dev *mvdev,
|
||||
struct vhost_iotlb *iotlb, unsigned int asid)
|
||||
struct mlx5_vdpa_mr *new_mr,
|
||||
unsigned int asid)
|
||||
{
|
||||
struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev);
|
||||
int err;
|
||||
|
|
@ -2681,28 +2708,21 @@ static int mlx5_vdpa_change_map(struct mlx5_vdpa_dev *mvdev,
|
|||
suspend_vqs(ndev);
|
||||
err = save_channels_info(ndev);
|
||||
if (err)
|
||||
goto err_mr;
|
||||
return err;
|
||||
|
||||
teardown_driver(ndev);
|
||||
mlx5_vdpa_destroy_mr_asid(mvdev, asid);
|
||||
err = mlx5_vdpa_create_mr(mvdev, iotlb, asid);
|
||||
if (err)
|
||||
goto err_mr;
|
||||
|
||||
mlx5_vdpa_update_mr(mvdev, new_mr, asid);
|
||||
|
||||
if (!(mvdev->status & VIRTIO_CONFIG_S_DRIVER_OK) || mvdev->suspended)
|
||||
goto err_mr;
|
||||
return 0;
|
||||
|
||||
restore_channels_info(ndev);
|
||||
err = setup_driver(mvdev);
|
||||
if (err)
|
||||
goto err_setup;
|
||||
return err;
|
||||
|
||||
return 0;
|
||||
|
||||
err_setup:
|
||||
mlx5_vdpa_destroy_mr_asid(mvdev, asid);
|
||||
err_mr:
|
||||
return err;
|
||||
}
|
||||
|
||||
/* reslock must be held for this function */
|
||||
|
|
@ -2841,7 +2861,7 @@ static void mlx5_vdpa_set_status(struct vdpa_device *vdev, u8 status)
|
|||
err_driver:
|
||||
unregister_link_notifier(ndev);
|
||||
err_setup:
|
||||
mlx5_vdpa_destroy_mr(&ndev->mvdev);
|
||||
mlx5_vdpa_destroy_mr_resources(&ndev->mvdev);
|
||||
ndev->mvdev.status |= VIRTIO_CONFIG_S_FAILED;
|
||||
err_clear:
|
||||
up_write(&ndev->reslock);
|
||||
|
|
@ -2856,7 +2876,7 @@ 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_compat_reset(struct vdpa_device *vdev, u32 flags)
|
||||
{
|
||||
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
|
||||
struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev);
|
||||
|
|
@ -2868,7 +2888,8 @@ static int mlx5_vdpa_reset(struct vdpa_device *vdev)
|
|||
unregister_link_notifier(ndev);
|
||||
teardown_driver(ndev);
|
||||
clear_vqs_ready(ndev);
|
||||
mlx5_vdpa_destroy_mr(&ndev->mvdev);
|
||||
if (flags & VDPA_RESET_F_CLEAN_MAP)
|
||||
mlx5_vdpa_destroy_mr_resources(&ndev->mvdev);
|
||||
ndev->mvdev.status = 0;
|
||||
ndev->mvdev.suspended = false;
|
||||
ndev->cur_num_vqs = 0;
|
||||
|
|
@ -2879,8 +2900,9 @@ static int mlx5_vdpa_reset(struct vdpa_device *vdev)
|
|||
init_group_to_asid_map(mvdev);
|
||||
++mvdev->generation;
|
||||
|
||||
if (MLX5_CAP_GEN(mvdev->mdev, umem_uid_0)) {
|
||||
if (mlx5_vdpa_create_mr(mvdev, NULL, 0))
|
||||
if ((flags & VDPA_RESET_F_CLEAN_MAP) &&
|
||||
MLX5_CAP_GEN(mvdev->mdev, umem_uid_0)) {
|
||||
if (mlx5_vdpa_create_dma_mr(mvdev))
|
||||
mlx5_vdpa_warn(mvdev, "create MR failed\n");
|
||||
}
|
||||
up_write(&ndev->reslock);
|
||||
|
|
@ -2888,6 +2910,11 @@ static int mlx5_vdpa_reset(struct vdpa_device *vdev)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int mlx5_vdpa_reset(struct vdpa_device *vdev)
|
||||
{
|
||||
return mlx5_vdpa_compat_reset(vdev, 0);
|
||||
}
|
||||
|
||||
static size_t mlx5_vdpa_get_config_size(struct vdpa_device *vdev)
|
||||
{
|
||||
return sizeof(struct virtio_net_config);
|
||||
|
|
@ -2919,18 +2946,38 @@ static u32 mlx5_vdpa_get_generation(struct vdpa_device *vdev)
|
|||
static int set_map_data(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *iotlb,
|
||||
unsigned int asid)
|
||||
{
|
||||
bool change_map;
|
||||
struct mlx5_vdpa_mr *new_mr;
|
||||
int err;
|
||||
|
||||
err = mlx5_vdpa_handle_set_map(mvdev, iotlb, &change_map, asid);
|
||||
if (err) {
|
||||
mlx5_vdpa_warn(mvdev, "set map failed(%d)\n", err);
|
||||
return err;
|
||||
if (asid >= MLX5_VDPA_NUM_AS)
|
||||
return -EINVAL;
|
||||
|
||||
if (vhost_iotlb_itree_first(iotlb, 0, U64_MAX)) {
|
||||
new_mr = mlx5_vdpa_create_mr(mvdev, iotlb);
|
||||
if (IS_ERR(new_mr)) {
|
||||
err = PTR_ERR(new_mr);
|
||||
mlx5_vdpa_warn(mvdev, "create map failed(%d)\n", err);
|
||||
return err;
|
||||
}
|
||||
} else {
|
||||
/* Empty iotlbs don't have an mr but will clear the previous mr. */
|
||||
new_mr = NULL;
|
||||
}
|
||||
|
||||
if (change_map)
|
||||
err = mlx5_vdpa_change_map(mvdev, iotlb, asid);
|
||||
if (!mvdev->mr[asid]) {
|
||||
mlx5_vdpa_update_mr(mvdev, new_mr, asid);
|
||||
} else {
|
||||
err = mlx5_vdpa_change_map(mvdev, new_mr, asid);
|
||||
if (err) {
|
||||
mlx5_vdpa_warn(mvdev, "change map failed(%d)\n", err);
|
||||
goto out_err;
|
||||
}
|
||||
}
|
||||
|
||||
return mlx5_vdpa_update_cvq_iotlb(mvdev, iotlb, asid);
|
||||
|
||||
out_err:
|
||||
mlx5_vdpa_destroy_mr(mvdev, new_mr);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
@ -2947,6 +2994,18 @@ static int mlx5_vdpa_set_map(struct vdpa_device *vdev, unsigned int asid,
|
|||
return err;
|
||||
}
|
||||
|
||||
static int mlx5_vdpa_reset_map(struct vdpa_device *vdev, unsigned int asid)
|
||||
{
|
||||
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
|
||||
struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev);
|
||||
int err;
|
||||
|
||||
down_write(&ndev->reslock);
|
||||
err = mlx5_vdpa_reset_mr(mvdev, asid);
|
||||
up_write(&ndev->reslock);
|
||||
return err;
|
||||
}
|
||||
|
||||
static struct device *mlx5_get_vq_dma_dev(struct vdpa_device *vdev, u16 idx)
|
||||
{
|
||||
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
|
||||
|
|
@ -2985,7 +3044,7 @@ static void mlx5_vdpa_free(struct vdpa_device *vdev)
|
|||
ndev = to_mlx5_vdpa_ndev(mvdev);
|
||||
|
||||
free_resources(ndev);
|
||||
mlx5_vdpa_destroy_mr(mvdev);
|
||||
mlx5_vdpa_destroy_mr_resources(mvdev);
|
||||
if (!is_zero_ether_addr(ndev->config.mac)) {
|
||||
pfmdev = pci_get_drvdata(pci_physfn(mvdev->mdev->pdev));
|
||||
mlx5_mpfs_del_mac(pfmdev, ndev->config.mac);
|
||||
|
|
@ -3169,12 +3228,19 @@ static int mlx5_set_group_asid(struct vdpa_device *vdev, u32 group,
|
|||
unsigned int asid)
|
||||
{
|
||||
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
|
||||
int err = 0;
|
||||
|
||||
if (group >= MLX5_VDPA_NUMVQ_GROUPS)
|
||||
return -EINVAL;
|
||||
|
||||
mvdev->group2asid[group] = asid;
|
||||
return 0;
|
||||
|
||||
mutex_lock(&mvdev->mr_mtx);
|
||||
if (group == MLX5_VDPA_CVQ_GROUP && mvdev->mr[asid])
|
||||
err = mlx5_vdpa_update_cvq_iotlb(mvdev, mvdev->mr[asid]->iotlb, asid);
|
||||
mutex_unlock(&mvdev->mr_mtx);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static const struct vdpa_config_ops mlx5_vdpa_ops = {
|
||||
|
|
@ -3191,7 +3257,9 @@ static const struct vdpa_config_ops mlx5_vdpa_ops = {
|
|||
.get_vq_irq = mlx5_get_vq_irq,
|
||||
.get_vq_align = mlx5_vdpa_get_vq_align,
|
||||
.get_vq_group = mlx5_vdpa_get_vq_group,
|
||||
.get_vq_desc_group = mlx5_vdpa_get_vq_desc_group, /* Op disabled if not supported. */
|
||||
.get_device_features = mlx5_vdpa_get_device_features,
|
||||
.get_backend_features = mlx5_vdpa_get_backend_features,
|
||||
.set_driver_features = mlx5_vdpa_set_driver_features,
|
||||
.get_driver_features = mlx5_vdpa_get_driver_features,
|
||||
.set_config_cb = mlx5_vdpa_set_config_cb,
|
||||
|
|
@ -3201,11 +3269,13 @@ static const struct vdpa_config_ops mlx5_vdpa_ops = {
|
|||
.get_status = mlx5_vdpa_get_status,
|
||||
.set_status = mlx5_vdpa_set_status,
|
||||
.reset = mlx5_vdpa_reset,
|
||||
.compat_reset = mlx5_vdpa_compat_reset,
|
||||
.get_config_size = mlx5_vdpa_get_config_size,
|
||||
.get_config = mlx5_vdpa_get_config,
|
||||
.set_config = mlx5_vdpa_set_config,
|
||||
.get_generation = mlx5_vdpa_get_generation,
|
||||
.set_map = mlx5_vdpa_set_map,
|
||||
.reset_map = mlx5_vdpa_reset_map,
|
||||
.set_group_asid = mlx5_set_group_asid,
|
||||
.get_vq_dma_dev = mlx5_get_vq_dma_dev,
|
||||
.free = mlx5_vdpa_free,
|
||||
|
|
@ -3289,6 +3359,7 @@ struct mlx5_vdpa_mgmtdev {
|
|||
struct vdpa_mgmt_dev mgtdev;
|
||||
struct mlx5_adev *madev;
|
||||
struct mlx5_vdpa_net *ndev;
|
||||
struct vdpa_config_ops vdpa_ops;
|
||||
};
|
||||
|
||||
static int config_func_mtu(struct mlx5_core_dev *mdev, u16 mtu)
|
||||
|
|
@ -3402,7 +3473,7 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name,
|
|||
max_vqs = 2;
|
||||
}
|
||||
|
||||
ndev = vdpa_alloc_device(struct mlx5_vdpa_net, mvdev.vdev, mdev->device, &mlx5_vdpa_ops,
|
||||
ndev = vdpa_alloc_device(struct mlx5_vdpa_net, mvdev.vdev, mdev->device, &mgtdev->vdpa_ops,
|
||||
MLX5_VDPA_NUMVQ_GROUPS, MLX5_VDPA_NUM_AS, name, false);
|
||||
if (IS_ERR(ndev))
|
||||
return PTR_ERR(ndev);
|
||||
|
|
@ -3485,7 +3556,7 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name,
|
|||
goto err_mpfs;
|
||||
|
||||
if (MLX5_CAP_GEN(mvdev->mdev, umem_uid_0)) {
|
||||
err = mlx5_vdpa_create_mr(mvdev, NULL, 0);
|
||||
err = mlx5_vdpa_create_dma_mr(mvdev);
|
||||
if (err)
|
||||
goto err_res;
|
||||
}
|
||||
|
|
@ -3515,7 +3586,7 @@ err_reg:
|
|||
err_res2:
|
||||
free_resources(ndev);
|
||||
err_mr:
|
||||
mlx5_vdpa_destroy_mr(mvdev);
|
||||
mlx5_vdpa_destroy_mr_resources(mvdev);
|
||||
err_res:
|
||||
mlx5_vdpa_free_resources(&ndev->mvdev);
|
||||
err_mpfs:
|
||||
|
|
@ -3575,6 +3646,10 @@ static int mlx5v_probe(struct auxiliary_device *adev,
|
|||
MLX5_CAP_DEV_VDPA_EMULATION(mdev, max_num_virtio_queues) + 1;
|
||||
mgtdev->mgtdev.supported_features = get_supported_features(mdev);
|
||||
mgtdev->madev = madev;
|
||||
mgtdev->vdpa_ops = mlx5_vdpa_ops;
|
||||
|
||||
if (!MLX5_CAP_DEV_VDPA_EMULATION(mdev, desc_group_mkey_supported))
|
||||
mgtdev->vdpa_ops.get_vq_desc_group = NULL;
|
||||
|
||||
err = vdpa_mgmtdev_register(&mgtdev->mgtdev);
|
||||
if (err)
|
||||
|
|
|
|||
|
|
@ -139,7 +139,7 @@ static void vdpasim_vq_reset(struct vdpasim *vdpasim,
|
|||
vq->vring.notify = NULL;
|
||||
}
|
||||
|
||||
static void vdpasim_do_reset(struct vdpasim *vdpasim)
|
||||
static void vdpasim_do_reset(struct vdpasim *vdpasim, u32 flags)
|
||||
{
|
||||
int i;
|
||||
|
||||
|
|
@ -151,11 +151,13 @@ static void vdpasim_do_reset(struct vdpasim *vdpasim)
|
|||
&vdpasim->iommu_lock);
|
||||
}
|
||||
|
||||
for (i = 0; i < vdpasim->dev_attr.nas; i++) {
|
||||
vhost_iotlb_reset(&vdpasim->iommu[i]);
|
||||
vhost_iotlb_add_range(&vdpasim->iommu[i], 0, ULONG_MAX,
|
||||
0, VHOST_MAP_RW);
|
||||
vdpasim->iommu_pt[i] = true;
|
||||
if (flags & VDPA_RESET_F_CLEAN_MAP) {
|
||||
for (i = 0; i < vdpasim->dev_attr.nas; i++) {
|
||||
vhost_iotlb_reset(&vdpasim->iommu[i]);
|
||||
vhost_iotlb_add_range(&vdpasim->iommu[i], 0, ULONG_MAX,
|
||||
0, VHOST_MAP_RW);
|
||||
vdpasim->iommu_pt[i] = true;
|
||||
}
|
||||
}
|
||||
|
||||
vdpasim->running = true;
|
||||
|
|
@ -259,8 +261,12 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,
|
|||
if (!vdpasim->iommu_pt)
|
||||
goto err_iommu;
|
||||
|
||||
for (i = 0; i < vdpasim->dev_attr.nas; i++)
|
||||
for (i = 0; i < vdpasim->dev_attr.nas; i++) {
|
||||
vhost_iotlb_init(&vdpasim->iommu[i], max_iotlb_entries, 0);
|
||||
vhost_iotlb_add_range(&vdpasim->iommu[i], 0, ULONG_MAX, 0,
|
||||
VHOST_MAP_RW);
|
||||
vdpasim->iommu_pt[i] = true;
|
||||
}
|
||||
|
||||
for (i = 0; i < dev_attr->nvqs; i++)
|
||||
vringh_set_iotlb(&vdpasim->vqs[i].vring, &vdpasim->iommu[0],
|
||||
|
|
@ -480,18 +486,23 @@ 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_compat_reset(struct vdpa_device *vdpa, u32 flags)
|
||||
{
|
||||
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
|
||||
|
||||
mutex_lock(&vdpasim->mutex);
|
||||
vdpasim->status = 0;
|
||||
vdpasim_do_reset(vdpasim);
|
||||
vdpasim_do_reset(vdpasim, flags);
|
||||
mutex_unlock(&vdpasim->mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vdpasim_reset(struct vdpa_device *vdpa)
|
||||
{
|
||||
return vdpasim_compat_reset(vdpa, 0);
|
||||
}
|
||||
|
||||
static int vdpasim_suspend(struct vdpa_device *vdpa)
|
||||
{
|
||||
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
|
||||
|
|
@ -637,6 +648,25 @@ err:
|
|||
return ret;
|
||||
}
|
||||
|
||||
static int vdpasim_reset_map(struct vdpa_device *vdpa, unsigned int asid)
|
||||
{
|
||||
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
|
||||
|
||||
if (asid >= vdpasim->dev_attr.nas)
|
||||
return -EINVAL;
|
||||
|
||||
spin_lock(&vdpasim->iommu_lock);
|
||||
if (vdpasim->iommu_pt[asid])
|
||||
goto out;
|
||||
vhost_iotlb_reset(&vdpasim->iommu[asid]);
|
||||
vhost_iotlb_add_range(&vdpasim->iommu[asid], 0, ULONG_MAX,
|
||||
0, VHOST_MAP_RW);
|
||||
vdpasim->iommu_pt[asid] = true;
|
||||
out:
|
||||
spin_unlock(&vdpasim->iommu_lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vdpasim_bind_mm(struct vdpa_device *vdpa, struct mm_struct *mm)
|
||||
{
|
||||
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
|
||||
|
|
@ -749,6 +779,7 @@ static const struct vdpa_config_ops vdpasim_config_ops = {
|
|||
.get_status = vdpasim_get_status,
|
||||
.set_status = vdpasim_set_status,
|
||||
.reset = vdpasim_reset,
|
||||
.compat_reset = vdpasim_compat_reset,
|
||||
.suspend = vdpasim_suspend,
|
||||
.resume = vdpasim_resume,
|
||||
.get_config_size = vdpasim_get_config_size,
|
||||
|
|
@ -759,6 +790,7 @@ static const struct vdpa_config_ops vdpasim_config_ops = {
|
|||
.set_group_asid = vdpasim_set_group_asid,
|
||||
.dma_map = vdpasim_dma_map,
|
||||
.dma_unmap = vdpasim_dma_unmap,
|
||||
.reset_map = vdpasim_reset_map,
|
||||
.bind_mm = vdpasim_bind_mm,
|
||||
.unbind_mm = vdpasim_unbind_mm,
|
||||
.free = vdpasim_free,
|
||||
|
|
@ -787,6 +819,7 @@ static const struct vdpa_config_ops vdpasim_batch_config_ops = {
|
|||
.get_status = vdpasim_get_status,
|
||||
.set_status = vdpasim_set_status,
|
||||
.reset = vdpasim_reset,
|
||||
.compat_reset = vdpasim_compat_reset,
|
||||
.suspend = vdpasim_suspend,
|
||||
.resume = vdpasim_resume,
|
||||
.get_config_size = vdpasim_get_config_size,
|
||||
|
|
@ -796,6 +829,7 @@ static const struct vdpa_config_ops vdpasim_batch_config_ops = {
|
|||
.get_iova_range = vdpasim_get_iova_range,
|
||||
.set_group_asid = vdpasim_set_group_asid,
|
||||
.set_map = vdpasim_set_map,
|
||||
.reset_map = vdpasim_reset_map,
|
||||
.bind_mm = vdpasim_bind_mm,
|
||||
.unbind_mm = vdpasim_unbind_mm,
|
||||
.free = vdpasim_free,
|
||||
|
|
|
|||
|
|
@ -134,7 +134,6 @@ static DEFINE_MUTEX(vduse_lock);
|
|||
static DEFINE_IDR(vduse_idr);
|
||||
|
||||
static dev_t vduse_major;
|
||||
static struct class *vduse_class;
|
||||
static struct cdev vduse_ctrl_cdev;
|
||||
static struct cdev vduse_cdev;
|
||||
static struct workqueue_struct *vduse_irq_wq;
|
||||
|
|
@ -1528,6 +1527,16 @@ static const struct kobj_type vq_type = {
|
|||
.default_groups = vq_groups,
|
||||
};
|
||||
|
||||
static char *vduse_devnode(const struct device *dev, umode_t *mode)
|
||||
{
|
||||
return kasprintf(GFP_KERNEL, "vduse/%s", dev_name(dev));
|
||||
}
|
||||
|
||||
static const struct class vduse_class = {
|
||||
.name = "vduse",
|
||||
.devnode = vduse_devnode,
|
||||
};
|
||||
|
||||
static void vduse_dev_deinit_vqs(struct vduse_dev *dev)
|
||||
{
|
||||
int i;
|
||||
|
|
@ -1638,7 +1647,7 @@ static int vduse_destroy_dev(char *name)
|
|||
mutex_unlock(&dev->lock);
|
||||
|
||||
vduse_dev_reset(dev);
|
||||
device_destroy(vduse_class, MKDEV(MAJOR(vduse_major), dev->minor));
|
||||
device_destroy(&vduse_class, MKDEV(MAJOR(vduse_major), dev->minor));
|
||||
idr_remove(&vduse_idr, dev->minor);
|
||||
kvfree(dev->config);
|
||||
vduse_dev_deinit_vqs(dev);
|
||||
|
|
@ -1805,7 +1814,7 @@ static int vduse_create_dev(struct vduse_dev_config *config,
|
|||
|
||||
dev->minor = ret;
|
||||
dev->msg_timeout = VDUSE_MSG_DEFAULT_TIMEOUT;
|
||||
dev->dev = device_create_with_groups(vduse_class, NULL,
|
||||
dev->dev = device_create_with_groups(&vduse_class, NULL,
|
||||
MKDEV(MAJOR(vduse_major), dev->minor),
|
||||
dev, vduse_dev_groups, "%s", config->name);
|
||||
if (IS_ERR(dev->dev)) {
|
||||
|
|
@ -1821,7 +1830,7 @@ static int vduse_create_dev(struct vduse_dev_config *config,
|
|||
|
||||
return 0;
|
||||
err_vqs:
|
||||
device_destroy(vduse_class, MKDEV(MAJOR(vduse_major), dev->minor));
|
||||
device_destroy(&vduse_class, MKDEV(MAJOR(vduse_major), dev->minor));
|
||||
err_dev:
|
||||
idr_remove(&vduse_idr, dev->minor);
|
||||
err_idr:
|
||||
|
|
@ -1934,11 +1943,6 @@ static const struct file_operations vduse_ctrl_fops = {
|
|||
.llseek = noop_llseek,
|
||||
};
|
||||
|
||||
static char *vduse_devnode(const struct device *dev, umode_t *mode)
|
||||
{
|
||||
return kasprintf(GFP_KERNEL, "vduse/%s", dev_name(dev));
|
||||
}
|
||||
|
||||
struct vduse_mgmt_dev {
|
||||
struct vdpa_mgmt_dev mgmt_dev;
|
||||
struct device dev;
|
||||
|
|
@ -2082,11 +2086,9 @@ static int vduse_init(void)
|
|||
int ret;
|
||||
struct device *dev;
|
||||
|
||||
vduse_class = class_create("vduse");
|
||||
if (IS_ERR(vduse_class))
|
||||
return PTR_ERR(vduse_class);
|
||||
|
||||
vduse_class->devnode = vduse_devnode;
|
||||
ret = class_register(&vduse_class);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = alloc_chrdev_region(&vduse_major, 0, VDUSE_DEV_MAX, "vduse");
|
||||
if (ret)
|
||||
|
|
@ -2099,7 +2101,7 @@ static int vduse_init(void)
|
|||
if (ret)
|
||||
goto err_ctrl_cdev;
|
||||
|
||||
dev = device_create(vduse_class, NULL, vduse_major, NULL, "control");
|
||||
dev = device_create(&vduse_class, NULL, vduse_major, NULL, "control");
|
||||
if (IS_ERR(dev)) {
|
||||
ret = PTR_ERR(dev);
|
||||
goto err_device;
|
||||
|
|
@ -2141,13 +2143,13 @@ err_bound_wq:
|
|||
err_wq:
|
||||
cdev_del(&vduse_cdev);
|
||||
err_cdev:
|
||||
device_destroy(vduse_class, vduse_major);
|
||||
device_destroy(&vduse_class, vduse_major);
|
||||
err_device:
|
||||
cdev_del(&vduse_ctrl_cdev);
|
||||
err_ctrl_cdev:
|
||||
unregister_chrdev_region(vduse_major, VDUSE_DEV_MAX);
|
||||
err_chardev_region:
|
||||
class_destroy(vduse_class);
|
||||
class_unregister(&vduse_class);
|
||||
return ret;
|
||||
}
|
||||
module_init(vduse_init);
|
||||
|
|
@ -2159,10 +2161,10 @@ static void vduse_exit(void)
|
|||
destroy_workqueue(vduse_irq_bound_wq);
|
||||
destroy_workqueue(vduse_irq_wq);
|
||||
cdev_del(&vduse_cdev);
|
||||
device_destroy(vduse_class, vduse_major);
|
||||
device_destroy(&vduse_class, vduse_major);
|
||||
cdev_del(&vduse_ctrl_cdev);
|
||||
unregister_chrdev_region(vduse_major, VDUSE_DEV_MAX);
|
||||
class_destroy(vduse_class);
|
||||
class_unregister(&vduse_class);
|
||||
}
|
||||
module_exit(vduse_exit);
|
||||
|
||||
|
|
|
|||
|
|
@ -1158,7 +1158,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
|
|||
/*
|
||||
* Set prot_iter to data_iter and truncate it to
|
||||
* prot_bytes, and advance data_iter past any
|
||||
* preceeding prot_bytes that may be present.
|
||||
* preceding prot_bytes that may be present.
|
||||
*
|
||||
* Also fix up the exp_data_len to reflect only the
|
||||
* actual data payload length.
|
||||
|
|
|
|||
|
|
@ -131,6 +131,15 @@ static struct vhost_vdpa_as *vhost_vdpa_find_alloc_as(struct vhost_vdpa *v,
|
|||
return vhost_vdpa_alloc_as(v, asid);
|
||||
}
|
||||
|
||||
static void vhost_vdpa_reset_map(struct vhost_vdpa *v, u32 asid)
|
||||
{
|
||||
struct vdpa_device *vdpa = v->vdpa;
|
||||
const struct vdpa_config_ops *ops = vdpa->config;
|
||||
|
||||
if (ops->reset_map)
|
||||
ops->reset_map(vdpa, asid);
|
||||
}
|
||||
|
||||
static int vhost_vdpa_remove_as(struct vhost_vdpa *v, u32 asid)
|
||||
{
|
||||
struct vhost_vdpa_as *as = asid_to_as(v, asid);
|
||||
|
|
@ -140,6 +149,14 @@ static int vhost_vdpa_remove_as(struct vhost_vdpa *v, u32 asid)
|
|||
|
||||
hlist_del(&as->hash_link);
|
||||
vhost_vdpa_iotlb_unmap(v, &as->iotlb, 0ULL, 0ULL - 1, asid);
|
||||
/*
|
||||
* Devices with vendor specific IOMMU may need to restore
|
||||
* iotlb to the initial or default state, which cannot be
|
||||
* cleaned up in the all range unmap call above. Give them
|
||||
* a chance to clean up or reset the map to the desired
|
||||
* state.
|
||||
*/
|
||||
vhost_vdpa_reset_map(v, asid);
|
||||
kfree(as);
|
||||
|
||||
return 0;
|
||||
|
|
@ -210,13 +227,24 @@ 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 _compat_vdpa_reset(struct vhost_vdpa *v)
|
||||
{
|
||||
struct vdpa_device *vdpa = v->vdpa;
|
||||
u32 flags = 0;
|
||||
|
||||
if (v->vdev.vqs) {
|
||||
flags |= !vhost_backend_has_feature(v->vdev.vqs[0],
|
||||
VHOST_BACKEND_F_IOTLB_PERSIST) ?
|
||||
VDPA_RESET_F_CLEAN_MAP : 0;
|
||||
}
|
||||
|
||||
return vdpa_reset(vdpa, flags);
|
||||
}
|
||||
|
||||
static int vhost_vdpa_reset(struct vhost_vdpa *v)
|
||||
{
|
||||
v->in_batch = 0;
|
||||
|
||||
return vdpa_reset(vdpa);
|
||||
return _compat_vdpa_reset(v);
|
||||
}
|
||||
|
||||
static long vhost_vdpa_bind_mm(struct vhost_vdpa *v)
|
||||
|
|
@ -295,7 +323,7 @@ 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 = _compat_vdpa_reset(v);
|
||||
if (ret)
|
||||
return ret;
|
||||
} else
|
||||
|
|
@ -389,6 +417,14 @@ static bool vhost_vdpa_can_resume(const struct vhost_vdpa *v)
|
|||
return ops->resume;
|
||||
}
|
||||
|
||||
static bool vhost_vdpa_has_desc_group(const struct vhost_vdpa *v)
|
||||
{
|
||||
struct vdpa_device *vdpa = v->vdpa;
|
||||
const struct vdpa_config_ops *ops = vdpa->config;
|
||||
|
||||
return ops->get_vq_desc_group;
|
||||
}
|
||||
|
||||
static long vhost_vdpa_get_features(struct vhost_vdpa *v, u64 __user *featurep)
|
||||
{
|
||||
struct vdpa_device *vdpa = v->vdpa;
|
||||
|
|
@ -414,6 +450,15 @@ static u64 vhost_vdpa_get_backend_features(const struct vhost_vdpa *v)
|
|||
return ops->get_backend_features(vdpa);
|
||||
}
|
||||
|
||||
static bool vhost_vdpa_has_persistent_map(const struct vhost_vdpa *v)
|
||||
{
|
||||
struct vdpa_device *vdpa = v->vdpa;
|
||||
const struct vdpa_config_ops *ops = vdpa->config;
|
||||
|
||||
return (!ops->set_map && !ops->dma_map) || ops->reset_map ||
|
||||
vhost_vdpa_get_backend_features(v) & BIT_ULL(VHOST_BACKEND_F_IOTLB_PERSIST);
|
||||
}
|
||||
|
||||
static long vhost_vdpa_set_features(struct vhost_vdpa *v, u64 __user *featurep)
|
||||
{
|
||||
struct vdpa_device *vdpa = v->vdpa;
|
||||
|
|
@ -605,6 +650,16 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd,
|
|||
else if (copy_to_user(argp, &s, sizeof(s)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
case VHOST_VDPA_GET_VRING_DESC_GROUP:
|
||||
if (!vhost_vdpa_has_desc_group(v))
|
||||
return -EOPNOTSUPP;
|
||||
s.index = idx;
|
||||
s.num = ops->get_vq_desc_group(vdpa, idx);
|
||||
if (s.num >= vdpa->ngroups)
|
||||
return -EIO;
|
||||
else if (copy_to_user(argp, &s, sizeof(s)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
case VHOST_VDPA_SET_GROUP_ASID:
|
||||
if (copy_from_user(&s, argp, sizeof(s)))
|
||||
return -EFAULT;
|
||||
|
|
@ -690,6 +745,8 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep,
|
|||
if (copy_from_user(&features, featurep, sizeof(features)))
|
||||
return -EFAULT;
|
||||
if (features & ~(VHOST_VDPA_BACKEND_FEATURES |
|
||||
BIT_ULL(VHOST_BACKEND_F_DESC_ASID) |
|
||||
BIT_ULL(VHOST_BACKEND_F_IOTLB_PERSIST) |
|
||||
BIT_ULL(VHOST_BACKEND_F_SUSPEND) |
|
||||
BIT_ULL(VHOST_BACKEND_F_RESUME) |
|
||||
BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK)))
|
||||
|
|
@ -700,6 +757,15 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep,
|
|||
if ((features & BIT_ULL(VHOST_BACKEND_F_RESUME)) &&
|
||||
!vhost_vdpa_can_resume(v))
|
||||
return -EOPNOTSUPP;
|
||||
if ((features & BIT_ULL(VHOST_BACKEND_F_DESC_ASID)) &&
|
||||
!(features & BIT_ULL(VHOST_BACKEND_F_IOTLB_ASID)))
|
||||
return -EINVAL;
|
||||
if ((features & BIT_ULL(VHOST_BACKEND_F_DESC_ASID)) &&
|
||||
!vhost_vdpa_has_desc_group(v))
|
||||
return -EOPNOTSUPP;
|
||||
if ((features & BIT_ULL(VHOST_BACKEND_F_IOTLB_PERSIST)) &&
|
||||
!vhost_vdpa_has_persistent_map(v))
|
||||
return -EOPNOTSUPP;
|
||||
vhost_set_backend_features(&v->vdev, features);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -753,6 +819,10 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep,
|
|||
features |= BIT_ULL(VHOST_BACKEND_F_SUSPEND);
|
||||
if (vhost_vdpa_can_resume(v))
|
||||
features |= BIT_ULL(VHOST_BACKEND_F_RESUME);
|
||||
if (vhost_vdpa_has_desc_group(v))
|
||||
features |= BIT_ULL(VHOST_BACKEND_F_DESC_ASID);
|
||||
if (vhost_vdpa_has_persistent_map(v))
|
||||
features |= BIT_ULL(VHOST_BACKEND_F_IOTLB_PERSIST);
|
||||
features |= vhost_vdpa_get_backend_features(v);
|
||||
if (copy_to_user(featurep, &features, sizeof(features)))
|
||||
r = -EFAULT;
|
||||
|
|
@ -1285,6 +1355,7 @@ static void vhost_vdpa_cleanup(struct vhost_vdpa *v)
|
|||
vhost_vdpa_free_domain(v);
|
||||
vhost_dev_cleanup(&v->vdev);
|
||||
kfree(v->vdev.vqs);
|
||||
v->vdev.vqs = NULL;
|
||||
}
|
||||
|
||||
static int vhost_vdpa_open(struct inode *inode, struct file *filep)
|
||||
|
|
|
|||
|
|
@ -745,7 +745,7 @@ static void report_free_page_func(struct work_struct *work)
|
|||
* 2) update the host about the old page removed from vb->pages list;
|
||||
*
|
||||
* This function preforms the balloon page migration task.
|
||||
* Called through balloon_mapping->a_ops->migratepage
|
||||
* Called through movable_operations->migrate_page
|
||||
*/
|
||||
static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info,
|
||||
struct page *newpage, struct page *page, enum migrate_mode mode)
|
||||
|
|
|
|||
|
|
@ -39,6 +39,39 @@ static void vp_transport_features(struct virtio_device *vdev, u64 features)
|
|||
__virtio_set_bit(vdev, VIRTIO_F_RING_RESET);
|
||||
}
|
||||
|
||||
static int __vp_check_common_size_one_feature(struct virtio_device *vdev, u32 fbit,
|
||||
u32 offset, const char *fname)
|
||||
{
|
||||
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
|
||||
|
||||
if (!__virtio_test_bit(vdev, fbit))
|
||||
return 0;
|
||||
|
||||
if (likely(vp_dev->mdev.common_len >= offset))
|
||||
return 0;
|
||||
|
||||
dev_err(&vdev->dev,
|
||||
"virtio: common cfg size(%zu) does not match the feature %s\n",
|
||||
vp_dev->mdev.common_len, fname);
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
#define vp_check_common_size_one_feature(vdev, fbit, field) \
|
||||
__vp_check_common_size_one_feature(vdev, fbit, \
|
||||
offsetofend(struct virtio_pci_modern_common_cfg, field), #fbit)
|
||||
|
||||
static int vp_check_common_size(struct virtio_device *vdev)
|
||||
{
|
||||
if (vp_check_common_size_one_feature(vdev, VIRTIO_F_NOTIF_CONFIG_DATA, queue_notify_data))
|
||||
return -EINVAL;
|
||||
|
||||
if (vp_check_common_size_one_feature(vdev, VIRTIO_F_RING_RESET, queue_reset))
|
||||
return -EINVAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* virtio config->finalize_features() implementation */
|
||||
static int vp_finalize_features(struct virtio_device *vdev)
|
||||
{
|
||||
|
|
@ -57,6 +90,9 @@ static int vp_finalize_features(struct virtio_device *vdev)
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (vp_check_common_size(vdev))
|
||||
return -EINVAL;
|
||||
|
||||
vp_modern_set_features(&vp_dev->mdev, vdev->features);
|
||||
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -203,6 +203,10 @@ static inline void check_offsets(void)
|
|||
offsetof(struct virtio_pci_common_cfg, queue_used_lo));
|
||||
BUILD_BUG_ON(VIRTIO_PCI_COMMON_Q_USEDHI !=
|
||||
offsetof(struct virtio_pci_common_cfg, queue_used_hi));
|
||||
BUILD_BUG_ON(VIRTIO_PCI_COMMON_Q_NDATA !=
|
||||
offsetof(struct virtio_pci_modern_common_cfg, queue_notify_data));
|
||||
BUILD_BUG_ON(VIRTIO_PCI_COMMON_Q_RESET !=
|
||||
offsetof(struct virtio_pci_modern_common_cfg, queue_reset));
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -292,7 +296,7 @@ int vp_modern_probe(struct virtio_pci_modern_device *mdev)
|
|||
mdev->common = vp_modern_map_capability(mdev, common,
|
||||
sizeof(struct virtio_pci_common_cfg), 4,
|
||||
0, sizeof(struct virtio_pci_modern_common_cfg),
|
||||
NULL, NULL);
|
||||
&mdev->common_len, NULL);
|
||||
if (!mdev->common)
|
||||
goto err_map_common;
|
||||
mdev->isr = vp_modern_map_capability(mdev, isr, sizeof(u8), 1,
|
||||
|
|
|
|||
|
|
@ -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, 0);
|
||||
}
|
||||
|
||||
static bool virtio_vdpa_notify(struct virtqueue *vq)
|
||||
|
|
|
|||
|
|
@ -1232,7 +1232,13 @@ struct mlx5_ifc_virtio_emulation_cap_bits {
|
|||
u8 max_emulated_devices[0x8];
|
||||
u8 max_num_virtio_queues[0x18];
|
||||
|
||||
u8 reserved_at_a0[0x60];
|
||||
u8 reserved_at_a0[0x20];
|
||||
|
||||
u8 reserved_at_c0[0x13];
|
||||
u8 desc_group_mkey_supported[0x1];
|
||||
u8 reserved_at_d4[0xc];
|
||||
|
||||
u8 reserved_at_e0[0x20];
|
||||
|
||||
u8 umem_1_buffer_param_a[0x20];
|
||||
|
||||
|
|
|
|||
|
|
@ -74,7 +74,11 @@ struct mlx5_ifc_virtio_q_bits {
|
|||
u8 reserved_at_320[0x8];
|
||||
u8 pd[0x18];
|
||||
|
||||
u8 reserved_at_340[0xc0];
|
||||
u8 reserved_at_340[0x20];
|
||||
|
||||
u8 desc_group_mkey[0x20];
|
||||
|
||||
u8 reserved_at_380[0x80];
|
||||
};
|
||||
|
||||
struct mlx5_ifc_virtio_net_q_object_bits {
|
||||
|
|
@ -141,6 +145,7 @@ enum {
|
|||
MLX5_VIRTQ_MODIFY_MASK_STATE = (u64)1 << 0,
|
||||
MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_PARAMS = (u64)1 << 3,
|
||||
MLX5_VIRTQ_MODIFY_MASK_DIRTY_BITMAP_DUMP_ENABLE = (u64)1 << 4,
|
||||
MLX5_VIRTQ_MODIFY_MASK_DESC_GROUP_MKEY = (u64)1 << 14,
|
||||
};
|
||||
|
||||
enum {
|
||||
|
|
|
|||
|
|
@ -204,6 +204,16 @@ struct vdpa_map_file {
|
|||
* @vdev: vdpa device
|
||||
* @idx: virtqueue index
|
||||
* Returns u32: group id for this virtqueue
|
||||
* @get_vq_desc_group: Get the group id for the descriptor table of
|
||||
* a specific virtqueue (optional)
|
||||
* @vdev: vdpa device
|
||||
* @idx: virtqueue index
|
||||
* Returns u32: group id for the descriptor table
|
||||
* portion of this virtqueue. Could be different
|
||||
* than the one from @get_vq_group, in which case
|
||||
* the access to the descriptor table can be
|
||||
* confined to a separate asid, isolating from
|
||||
* the virtqueue's buffer address access.
|
||||
* @get_device_features: Get virtio features supported by the device
|
||||
* @vdev: vdpa device
|
||||
* Returns the virtio features support by the
|
||||
|
|
@ -242,6 +252,17 @@ struct vdpa_map_file {
|
|||
* @reset: Reset device
|
||||
* @vdev: vdpa device
|
||||
* Returns integer: success (0) or error (< 0)
|
||||
* @compat_reset: Reset device with compatibility quirks to
|
||||
* accommodate older userspace. Only needed by
|
||||
* parent driver which used to have bogus reset
|
||||
* behaviour, and has to maintain such behaviour
|
||||
* for compatibility with older userspace.
|
||||
* Historically compliant driver only has to
|
||||
* implement .reset, Historically non-compliant
|
||||
* driver should implement both.
|
||||
* @vdev: vdpa device
|
||||
* @flags: compatibility quirks for reset
|
||||
* Returns integer: success (0) or error (< 0)
|
||||
* @suspend: Suspend the device (optional)
|
||||
* @vdev: vdpa device
|
||||
* Returns integer: success (0) or error (< 0)
|
||||
|
|
@ -317,6 +338,15 @@ struct vdpa_map_file {
|
|||
* @iova: iova to be unmapped
|
||||
* @size: size of the area
|
||||
* Returns integer: success (0) or error (< 0)
|
||||
* @reset_map: Reset device memory mapping to the default
|
||||
* state (optional)
|
||||
* Needed for devices that are using device
|
||||
* specific DMA translation and prefer mapping
|
||||
* to be decoupled from the virtio life cycle,
|
||||
* i.e. device .reset op does not reset mapping
|
||||
* @vdev: vdpa device
|
||||
* @asid: address space identifier
|
||||
* Returns integer: success (0) or error (< 0)
|
||||
* @get_vq_dma_dev: Get the dma device for a specific
|
||||
* virtqueue (optional)
|
||||
* @vdev: vdpa device
|
||||
|
|
@ -360,6 +390,7 @@ struct vdpa_config_ops {
|
|||
/* Device ops */
|
||||
u32 (*get_vq_align)(struct vdpa_device *vdev);
|
||||
u32 (*get_vq_group)(struct vdpa_device *vdev, u16 idx);
|
||||
u32 (*get_vq_desc_group)(struct vdpa_device *vdev, u16 idx);
|
||||
u64 (*get_device_features)(struct vdpa_device *vdev);
|
||||
u64 (*get_backend_features)(const struct vdpa_device *vdev);
|
||||
int (*set_driver_features)(struct vdpa_device *vdev, u64 features);
|
||||
|
|
@ -373,6 +404,8 @@ struct vdpa_config_ops {
|
|||
u8 (*get_status)(struct vdpa_device *vdev);
|
||||
void (*set_status)(struct vdpa_device *vdev, u8 status);
|
||||
int (*reset)(struct vdpa_device *vdev);
|
||||
int (*compat_reset)(struct vdpa_device *vdev, u32 flags);
|
||||
#define VDPA_RESET_F_CLEAN_MAP 1
|
||||
int (*suspend)(struct vdpa_device *vdev);
|
||||
int (*resume)(struct vdpa_device *vdev);
|
||||
size_t (*get_config_size)(struct vdpa_device *vdev);
|
||||
|
|
@ -394,6 +427,7 @@ struct vdpa_config_ops {
|
|||
u64 iova, u64 size, u64 pa, u32 perm, void *opaque);
|
||||
int (*dma_unmap)(struct vdpa_device *vdev, unsigned int asid,
|
||||
u64 iova, u64 size);
|
||||
int (*reset_map)(struct vdpa_device *vdev, unsigned int asid);
|
||||
int (*set_group_asid)(struct vdpa_device *vdev, unsigned int group,
|
||||
unsigned int asid);
|
||||
struct device *(*get_vq_dma_dev)(struct vdpa_device *vdev, u16 idx);
|
||||
|
|
@ -485,14 +519,17 @@ 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, u32 flags)
|
||||
{
|
||||
const struct vdpa_config_ops *ops = vdev->config;
|
||||
int ret;
|
||||
|
||||
down_write(&vdev->cf_lock);
|
||||
vdev->features_valid = false;
|
||||
ret = ops->reset(vdev);
|
||||
if (ops->compat_reset && flags)
|
||||
ret = ops->compat_reset(vdev, flags);
|
||||
else
|
||||
ret = ops->reset(vdev);
|
||||
up_write(&vdev->cf_lock);
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -12,37 +12,48 @@ struct virtio_pci_modern_common_cfg {
|
|||
__le16 queue_reset; /* read-write */
|
||||
};
|
||||
|
||||
/**
|
||||
* struct virtio_pci_modern_device - info for modern PCI virtio
|
||||
* @pci_dev: Ptr to the PCI device struct
|
||||
* @common: Position of the common capability in the PCI config
|
||||
* @device: Device-specific data (non-legacy mode)
|
||||
* @notify_base: Base of vq notifications (non-legacy mode)
|
||||
* @notify_pa: Physical base of vq notifications
|
||||
* @isr: Where to read and clear interrupt
|
||||
* @notify_len: So we can sanity-check accesses
|
||||
* @device_len: So we can sanity-check accesses
|
||||
* @notify_map_cap: Capability for when we need to map notifications per-vq
|
||||
* @notify_offset_multiplier: Multiply queue_notify_off by this value
|
||||
* (non-legacy mode).
|
||||
* @modern_bars: Bitmask of BARs
|
||||
* @id: Device and vendor id
|
||||
* @device_id_check: Callback defined before vp_modern_probe() to be used to
|
||||
* verify the PCI device is a vendor's expected device rather
|
||||
* than the standard virtio PCI device
|
||||
* Returns the found device id or ERRNO
|
||||
* @dma_mask: Optional mask instead of the traditional DMA_BIT_MASK(64),
|
||||
* for vendor devices with DMA space address limitations
|
||||
*/
|
||||
struct virtio_pci_modern_device {
|
||||
struct pci_dev *pci_dev;
|
||||
|
||||
struct virtio_pci_common_cfg __iomem *common;
|
||||
/* Device-specific data (non-legacy mode) */
|
||||
void __iomem *device;
|
||||
/* Base of vq notifications (non-legacy mode). */
|
||||
void __iomem *notify_base;
|
||||
/* Physical base of vq notifications */
|
||||
resource_size_t notify_pa;
|
||||
/* Where to read and clear interrupt */
|
||||
u8 __iomem *isr;
|
||||
|
||||
/* So we can sanity-check accesses. */
|
||||
size_t notify_len;
|
||||
size_t device_len;
|
||||
size_t common_len;
|
||||
|
||||
/* Capability for when we need to map notifications per-vq. */
|
||||
int notify_map_cap;
|
||||
|
||||
/* Multiply queue_notify_off by this value. (non-legacy mode). */
|
||||
u32 notify_offset_multiplier;
|
||||
|
||||
int modern_bars;
|
||||
|
||||
struct virtio_device_id id;
|
||||
|
||||
/* optional check for vendor virtio device, returns dev_id or -ERRNO */
|
||||
int (*device_id_check)(struct pci_dev *pdev);
|
||||
|
||||
/* optional mask for devices with limited DMA space */
|
||||
u64 dma_mask;
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -219,4 +219,12 @@
|
|||
*/
|
||||
#define VHOST_VDPA_RESUME _IO(VHOST_VIRTIO, 0x7E)
|
||||
|
||||
/* Get the group for the descriptor table including driver & device areas
|
||||
* of a virtqueue: read index, write group in num.
|
||||
* The virtqueue index is stored in the index field of vhost_vring_state.
|
||||
* The group ID of the descriptor table for this specific virtqueue
|
||||
* is returned via num field of vhost_vring_state.
|
||||
*/
|
||||
#define VHOST_VDPA_GET_VRING_DESC_GROUP _IOWR(VHOST_VIRTIO, 0x7F, \
|
||||
struct vhost_vring_state)
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -185,5 +185,12 @@ struct vhost_vdpa_iova_range {
|
|||
* DRIVER_OK
|
||||
*/
|
||||
#define VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK 0x6
|
||||
/* Device may expose the virtqueue's descriptor area, driver area and
|
||||
* device area to a different group for ASID binding than where its
|
||||
* buffers may reside. Requires VHOST_BACKEND_F_IOTLB_ASID.
|
||||
*/
|
||||
#define VHOST_BACKEND_F_DESC_ASID 0x7
|
||||
/* IOTLB don't flush memory mapping across device reset */
|
||||
#define VHOST_BACKEND_F_IOTLB_PERSIST 0x8
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -105,6 +105,11 @@
|
|||
*/
|
||||
#define VIRTIO_F_NOTIFICATION_DATA 38
|
||||
|
||||
/* This feature indicates that the driver uses the data provided by the device
|
||||
* as a virtqueue identifier in available buffer notifications.
|
||||
*/
|
||||
#define VIRTIO_F_NOTIF_CONFIG_DATA 39
|
||||
|
||||
/*
|
||||
* This feature indicates that the driver can reset a queue individually.
|
||||
*/
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue