IB/mlx4: Add support for XRC SRQs
Allow the user to create XRC SRQs. This patch is based on a patch
from Jack Morgenstrein <jackm@dev.mellanox.co.il>.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/net/mlx4/srq.c b/drivers/net/mlx4/srq.c
index 3b07b80..a20b141 100644
--- a/drivers/net/mlx4/srq.c
+++ b/drivers/net/mlx4/srq.c
@@ -40,20 +40,20 @@
struct mlx4_srq_context {
__be32 state_logsize_srqn;
u8 logstride;
- u8 reserved1[3];
- u8 pg_offset;
- u8 reserved2[3];
- u32 reserved3;
+ u8 reserved1;
+ __be16 xrcd;
+ __be32 pg_offset_cqn;
+ u32 reserved2;
u8 log_page_size;
- u8 reserved4[2];
+ u8 reserved3[2];
u8 mtt_base_addr_h;
__be32 mtt_base_addr_l;
__be32 pd;
__be16 limit_watermark;
__be16 wqe_cnt;
- u16 reserved5;
+ u16 reserved4;
__be16 wqe_counter;
- u32 reserved6;
+ u32 reserved5;
__be64 db_rec_addr;
};
@@ -109,8 +109,8 @@
MLX4_CMD_TIME_CLASS_A);
}
-int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, struct mlx4_mtt *mtt,
- u64 db_rec, struct mlx4_srq *srq)
+int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, u32 cqn, u16 xrcd,
+ struct mlx4_mtt *mtt, u64 db_rec, struct mlx4_srq *srq)
{
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table;
struct mlx4_cmd_mailbox *mailbox;
@@ -148,6 +148,8 @@
srq_context->state_logsize_srqn = cpu_to_be32((ilog2(srq->max) << 24) |
srq->srqn);
srq_context->logstride = srq->wqe_shift - 4;
+ srq_context->xrcd = cpu_to_be16(xrcd);
+ srq_context->pg_offset_cqn = cpu_to_be32(cqn & 0xffffff);
srq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT;
mtt_addr = mlx4_mtt_addr(dev, mtt);