Merge branch 'fix/hda' into for-linus

[pandora-kernel.git] / drivers / infiniband / hw / mlx4 / qp.c

diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 256a00c..989555c 100644 (file)
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -54,7 +54,8 @@ enum {
        /*
         * Largest possible UD header: send with GRH and immediate data.
         */
-       MLX4_IB_UD_HEADER_SIZE          = 72
+       MLX4_IB_UD_HEADER_SIZE          = 72,
+       MLX4_IB_LSO_HEADER_SPARE        = 128,
 };
 
 struct mlx4_ib_sqp {
@@ -67,7 +68,8 @@ struct mlx4_ib_sqp {
 };
 
 enum {
-       MLX4_IB_MIN_SQ_STRIDE = 6
+       MLX4_IB_MIN_SQ_STRIDE   = 6,
+       MLX4_IB_CACHE_LINE_SIZE = 64,
 };
 
 static const __be32 mlx4_ib_opcode[] = {
@@ -261,7 +263,7 @@ static int send_wqe_overhead(enum ib_qp_type type, u32 flags)
        case IB_QPT_UD:
                return sizeof (struct mlx4_wqe_ctrl_seg) +
                        sizeof (struct mlx4_wqe_datagram_seg) +
-                       ((flags & MLX4_IB_QP_LSO) ? 64 : 0);
+                       ((flags & MLX4_IB_QP_LSO) ? MLX4_IB_LSO_HEADER_SPARE : 0);
        case IB_QPT_UC:
                return sizeof (struct mlx4_wqe_ctrl_seg) +
                        sizeof (struct mlx4_wqe_raddr_seg);
@@ -897,7 +899,6 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
 
        context->flags = cpu_to_be32((to_mlx4_state(new_state) << 28) |
                                     (to_mlx4_st(ibqp->qp_type) << 16));
-       context->flags     |= cpu_to_be32(1 << 8); /* DE? */
 
        if (!(attr_mask & IB_QP_PATH_MIG_STATE))
                context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11);
@@ -1467,16 +1468,12 @@ static void __set_data_seg(struct mlx4_wqe_data_seg *dseg, struct ib_sge *sg)
 
 static int build_lso_seg(struct mlx4_wqe_lso_seg *wqe, struct ib_send_wr *wr,
                         struct mlx4_ib_qp *qp, unsigned *lso_seg_len,
-                        __be32 *lso_hdr_sz)
+                        __be32 *lso_hdr_sz, __be32 *blh)
 {
        unsigned halign = ALIGN(sizeof *wqe + wr->wr.ud.hlen, 16);
 
-       /*
-        * This is a temporary limitation and will be removed in
-        * a forthcoming FW release:
-        */
-       if (unlikely(halign > 64))
-               return -EINVAL;
+       if (unlikely(halign > MLX4_IB_CACHE_LINE_SIZE))
+               *blh = cpu_to_be32(1 << 6);
 
        if (unlikely(!(qp->flags & MLX4_IB_QP_LSO) &&
                     wr->num_sge > qp->sq.max_gs - (halign >> 4)))
@@ -1522,6 +1519,7 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
        __be32 dummy;
        __be32 *lso_wqe;
        __be32 uninitialized_var(lso_hdr_sz);
+       __be32 blh;
        int i;
 
        spin_lock_irqsave(&qp->sq.lock, flags);
@@ -1530,6 +1528,7 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 
        for (nreq = 0; wr; ++nreq, wr = wr->next) {
                lso_wqe = &dummy;
+               blh = 0;
 
                if (mlx4_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) {
                        err = -ENOMEM;
@@ -1616,7 +1615,7 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                        size += sizeof (struct mlx4_wqe_datagram_seg) / 16;
 
                        if (wr->opcode == IB_WR_LSO) {
-                               err = build_lso_seg(wqe, wr, qp, &seglen, &lso_hdr_sz);
+                               err = build_lso_seg(wqe, wr, qp, &seglen, &lso_hdr_sz, &blh);
                                if (unlikely(err)) {
                                        *bad_wr = wr;
                                        goto out;
@@ -1687,7 +1686,7 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                }
 
                ctrl->owner_opcode = mlx4_ib_opcode[wr->opcode] |
-                       (ind & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0);
+                       (ind & qp->sq.wqe_cnt ? cpu_to_be32(1 << 31) : 0) | blh;
 
                stamp = ind + qp->sq_spare_wqes;
                ind += DIV_ROUND_UP(size * 16, 1U << qp->sq.wqe_shift);