net/mlx5: Add DCT command interface

Add a missing command interface to work with a DCT. It includes: creating,
destroying and get events for.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

3 files changed, 29 insertions, 0 deletions

diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 52b8ea423dd2..9aee835b7393 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -286,6 +286,7 @@ enum {
         MLX5_EVENT_QUEUE_TYPE_QP = 0,
         MLX5_EVENT_QUEUE_TYPE_RQ = 1,
         MLX5_EVENT_QUEUE_TYPE_SQ = 2,
+        MLX5_EVENT_QUEUE_TYPE_DCT = 6,
 };
 
 enum mlx5_event {
@@ -321,6 +322,8 @@ enum mlx5_event {
         MLX5_EVENT_TYPE_PAGE_FAULT         = 0xc,
         MLX5_EVENT_TYPE_NIC_VPORT_CHANGE   = 0xd,
 
+        MLX5_EVENT_TYPE_DCT_DRAINED        = 0x1c,
+
         MLX5_EVENT_TYPE_FPGA_ERROR         = 0x20,
 };
 
@@ -613,6 +616,11 @@ struct mlx5_eqe_pps {
         u8              rsvd2[12];
 } __packed;
 
+struct mlx5_eqe_dct {
+        __be32  reserved[6];
+        __be32  dctn;
+};
+
 union ev_data {
         __be32                          raw[7];
         struct mlx5_eqe_cmd             cmd;
@@ -628,6 +636,7 @@ union ev_data {
         struct mlx5_eqe_vport_change    vport_change;
         struct mlx5_eqe_port_module     port_module;
         struct mlx5_eqe_pps             pps;
+        struct mlx5_eqe_dct             dct;
 } __packed;
 
 struct mlx5_eqe {
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 2fe263f69751..0776554f18dc 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -154,6 +154,13 @@ enum mlx5_dcbx_oper_mode {
         MLX5E_DCBX_PARAM_VER_OPER_AUTO  = 0x3,
 };
 
+enum mlx5_dct_atomic_mode {
+        MLX5_ATOMIC_MODE_DCT_OFF        = 20,
+        MLX5_ATOMIC_MODE_DCT_NONE       = 0 << MLX5_ATOMIC_MODE_DCT_OFF,
+        MLX5_ATOMIC_MODE_DCT_IB_COMP    = 1 << MLX5_ATOMIC_MODE_DCT_OFF,
+        MLX5_ATOMIC_MODE_DCT_CX         = 2 << MLX5_ATOMIC_MODE_DCT_OFF,
+};
+
 enum {
         MLX5_ATOMIC_OPS_CMP_SWAP        = 1 << 0,
         MLX5_ATOMIC_OPS_FETCH_ADD       = 1 << 1,
@@ -432,6 +439,7 @@ enum mlx5_res_type {
         MLX5_RES_SRQ    = 3,
         MLX5_RES_XSRQ   = 4,
         MLX5_RES_XRQ    = 5,
+        MLX5_RES_DCT    = MLX5_EVENT_QUEUE_TYPE_DCT,
 };
 
 struct mlx5_core_rsc_common {
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h
index 62af7512dabb..4778d41085d4 100644
--- a/include/linux/mlx5/qp.h
+++ b/include/linux/mlx5/qp.h
@@ -473,6 +473,11 @@ struct mlx5_core_qp {
         int                     pid;
 };
 
+struct mlx5_core_dct {
+        struct mlx5_core_qp     mqp;
+        struct completion       drained;
+};
+
 struct mlx5_qp_path {
         u8                      fl_free_ar;
         u8                      rsvd3;
@@ -549,6 +554,9 @@ static inline struct mlx5_core_mkey *__mlx5_mr_lookup(struct mlx5_core_dev *dev,
         return radix_tree_lookup(&dev->priv.mkey_table.tree, key);
 }
 
+int mlx5_core_create_dct(struct mlx5_core_dev *dev,
+                         struct mlx5_core_dct *qp,
+                         u32 *in, int inlen);
 int mlx5_core_create_qp(struct mlx5_core_dev *dev,
                         struct mlx5_core_qp *qp,
                         u32 *in,
@@ -558,8 +566,12 @@ int mlx5_core_qp_modify(struct mlx5_core_dev *dev, u16 opcode,
                         struct mlx5_core_qp *qp);
 int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
                          struct mlx5_core_qp *qp);
+int mlx5_core_destroy_dct(struct mlx5_core_dev *dev,
+                          struct mlx5_core_dct *dct);
 int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
                        u32 *out, int outlen);
+int mlx5_core_dct_query(struct mlx5_core_dev *dev, struct mlx5_core_dct *dct,
+                        u32 *out, int outlen);
 
 int mlx5_core_set_delay_drop(struct mlx5_core_dev *dev,
                              u32 timeout_usec);