diff options
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_qp.c | 87 |
1 files changed, 37 insertions, 50 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c index 3543299ecb1..e826c9ff5d7 100644 --- a/drivers/infiniband/hw/mthca/mthca_qp.c +++ b/drivers/infiniband/hw/mthca/mthca_qp.c @@ -522,6 +522,36 @@ static void init_port(struct mthca_dev *dev, int port) mthca_warn(dev, "INIT_IB returned status %02x.\n", status); } +static __be32 get_hw_access_flags(struct mthca_qp *qp, struct ib_qp_attr *attr, + int attr_mask) +{ + u8 dest_rd_atomic; + u32 access_flags; + u32 hw_access_flags = 0; + + if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) + dest_rd_atomic = attr->max_dest_rd_atomic; + else + dest_rd_atomic = qp->resp_depth; + + if (attr_mask & IB_QP_ACCESS_FLAGS) + access_flags = attr->qp_access_flags; + else + access_flags = qp->atomic_rd_en; + + if (!dest_rd_atomic) + access_flags &= IB_ACCESS_REMOTE_WRITE; + + if (access_flags & IB_ACCESS_REMOTE_READ) + hw_access_flags |= MTHCA_QP_BIT_RRE; + if (access_flags & IB_ACCESS_REMOTE_ATOMIC) + hw_access_flags |= MTHCA_QP_BIT_RAE; + if (access_flags & IB_ACCESS_REMOTE_WRITE) + hw_access_flags |= MTHCA_QP_BIT_RWE; + + return cpu_to_be32(hw_access_flags); +} + int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) { struct mthca_dev *dev = to_mdev(ibqp->device); @@ -743,57 +773,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) qp_context->snd_db_index = cpu_to_be32(qp->sq.db_index); } - if (attr_mask & IB_QP_ACCESS_FLAGS) { - qp_context->params2 |= - cpu_to_be32(attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE ? - MTHCA_QP_BIT_RWE : 0); - - /* - * Only enable RDMA reads and atomics if we have - * responder resources set to a non-zero value. - */ - if (qp->resp_depth) { - qp_context->params2 |= - cpu_to_be32(attr->qp_access_flags & IB_ACCESS_REMOTE_READ ? - MTHCA_QP_BIT_RRE : 0); - qp_context->params2 |= - cpu_to_be32(attr->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC ? - MTHCA_QP_BIT_RAE : 0); - } - - qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RWE | - MTHCA_QP_OPTPAR_RRE | - MTHCA_QP_OPTPAR_RAE); - } - if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { - if (qp->resp_depth && !attr->max_dest_rd_atomic) { - /* - * Lowering our responder resources to zero. - * Turn off reads RDMA and atomics as responder. - * (RRE/RAE in params2 already zero) - */ - qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRE | - MTHCA_QP_OPTPAR_RAE); - } - - if (!qp->resp_depth && attr->max_dest_rd_atomic) { - /* - * Increasing our responder resources from - * zero. Turn on RDMA reads and atomics as - * appropriate. - */ - qp_context->params2 |= - cpu_to_be32(qp->atomic_rd_en & IB_ACCESS_REMOTE_READ ? - MTHCA_QP_BIT_RRE : 0); - qp_context->params2 |= - cpu_to_be32(qp->atomic_rd_en & IB_ACCESS_REMOTE_ATOMIC ? - MTHCA_QP_BIT_RAE : 0); - - qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRE | - MTHCA_QP_OPTPAR_RAE); - } - if (attr->max_dest_rd_atomic) qp_context->params2 |= cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21); @@ -801,6 +781,13 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RRA_MAX); } + if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) { + qp_context->params2 |= get_hw_access_flags(qp, attr, attr_mask); + qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RWE | + MTHCA_QP_OPTPAR_RRE | + MTHCA_QP_OPTPAR_RAE); + } + qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RSC); if (ibqp->srq) |