IB/mlx4: Add support for CQ time-stamping
This includes: * support allocation of CQ with the TIMESTAMP_COMPLETION creation flag. * add timestamp_mask and hca_core_clock to query_device, reporting the number of supported timestamp bits (mask) and the hca_core_clock frequency. * return hca core clock's offset in query_device vendor's data, this is needed in order to read the HCA's core clock. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
parent
52033cfb5a
commit
4b664c4355
3 changed files with 62 additions and 5 deletions
|
@ -166,6 +166,7 @@ err_buf:
|
|||
return err;
|
||||
}
|
||||
|
||||
#define CQ_CREATE_FLAGS_SUPPORTED IB_CQ_FLAGS_TIMESTAMP_COMPLETION
|
||||
struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev,
|
||||
const struct ib_cq_init_attr *attr,
|
||||
struct ib_ucontext *context,
|
||||
|
@ -178,10 +179,10 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev,
|
|||
struct mlx4_uar *uar;
|
||||
int err;
|
||||
|
||||
if (attr->flags)
|
||||
if (entries < 1 || entries > dev->dev->caps.max_cqes)
|
||||
return ERR_PTR(-EINVAL);
|
||||
|
||||
if (entries < 1 || entries > dev->dev->caps.max_cqes)
|
||||
if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED)
|
||||
return ERR_PTR(-EINVAL);
|
||||
|
||||
cq = kmalloc(sizeof *cq, GFP_KERNEL);
|
||||
|
@ -194,6 +195,7 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev,
|
|||
spin_lock_init(&cq->lock);
|
||||
cq->resize_buf = NULL;
|
||||
cq->resize_umem = NULL;
|
||||
cq->create_flags = attr->flags;
|
||||
INIT_LIST_HEAD(&cq->send_qp_list);
|
||||
INIT_LIST_HEAD(&cq->recv_qp_list);
|
||||
|
||||
|
@ -237,7 +239,8 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev,
|
|||
vector = dev->eq_table[vector % ibdev->num_comp_vectors];
|
||||
|
||||
err = mlx4_cq_alloc(dev->dev, entries, &cq->buf.mtt, uar,
|
||||
cq->db.dma, &cq->mcq, vector, 0, 0);
|
||||
cq->db.dma, &cq->mcq, vector, 0,
|
||||
!!(cq->create_flags & IB_CQ_FLAGS_TIMESTAMP_COMPLETION));
|
||||
if (err)
|
||||
goto err_dbmap;
|
||||
|
||||
|
|
|
@ -140,10 +140,27 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
|
|||
struct ib_smp *out_mad = NULL;
|
||||
int err = -ENOMEM;
|
||||
int have_ib_ports;
|
||||
struct mlx4_uverbs_ex_query_device cmd;
|
||||
struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
|
||||
struct mlx4_clock_params clock_params;
|
||||
|
||||
if (uhw->inlen || uhw->outlen)
|
||||
return -EINVAL;
|
||||
if (uhw->inlen) {
|
||||
if (uhw->inlen < sizeof(cmd))
|
||||
return -EINVAL;
|
||||
|
||||
err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd));
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (cmd.comp_mask)
|
||||
return -EINVAL;
|
||||
|
||||
if (cmd.reserved)
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
resp.response_length = offsetof(typeof(resp), response_length) +
|
||||
sizeof(resp.response_length);
|
||||
in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
|
||||
out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
|
||||
if (!in_mad || !out_mad)
|
||||
|
@ -233,7 +250,24 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
|
|||
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
|
||||
props->max_mcast_grp;
|
||||
props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
|
||||
props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
|
||||
props->timestamp_mask = 0xFFFFFFFFFFFFULL;
|
||||
|
||||
err = mlx4_get_internal_clock_params(dev->dev, &clock_params);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) {
|
||||
resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE;
|
||||
resp.response_length += sizeof(resp.hca_core_clock_offset);
|
||||
resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP;
|
||||
}
|
||||
|
||||
if (uhw->outlen) {
|
||||
err = ib_copy_to_udata(uhw, &resp, resp.response_length);
|
||||
if (err)
|
||||
goto out;
|
||||
}
|
||||
out:
|
||||
kfree(in_mad);
|
||||
kfree(out_mad);
|
||||
|
@ -2323,6 +2357,10 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
|
|||
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
|
||||
}
|
||||
|
||||
ibdev->ib_dev.uverbs_ex_cmd_mask |=
|
||||
(1ull << IB_USER_VERBS_EX_CMD_QUERY_DEVICE) |
|
||||
(1ull << IB_USER_VERBS_EX_CMD_CREATE_CQ);
|
||||
|
||||
mlx4_ib_alloc_eqs(dev, ibdev);
|
||||
|
||||
spin_lock_init(&iboe->lock);
|
||||
|
|
|
@ -110,6 +110,7 @@ struct mlx4_ib_cq {
|
|||
struct mutex resize_mutex;
|
||||
struct ib_umem *umem;
|
||||
struct ib_umem *resize_umem;
|
||||
int create_flags;
|
||||
/* List of qps that it serves.*/
|
||||
struct list_head send_qp_list;
|
||||
struct list_head recv_qp_list;
|
||||
|
@ -555,6 +556,21 @@ struct mlx4_ib_qp_tunnel_init_attr {
|
|||
u8 port;
|
||||
};
|
||||
|
||||
struct mlx4_uverbs_ex_query_device {
|
||||
__u32 comp_mask;
|
||||
__u32 reserved;
|
||||
};
|
||||
|
||||
enum query_device_resp_mask {
|
||||
QUERY_DEVICE_RESP_MASK_TIMESTAMP = 1UL << 0,
|
||||
};
|
||||
|
||||
struct mlx4_uverbs_ex_query_device_resp {
|
||||
__u32 comp_mask;
|
||||
__u32 response_length;
|
||||
__u64 hca_core_clock_offset;
|
||||
};
|
||||
|
||||
static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
|
||||
{
|
||||
return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
|
||||
|
|
Loading…
Reference in a new issue