From: Roland Dreier Date: Mon, 27 Jun 2005 21:36:42 +0000 (-0700) Subject: [PATCH] IB/mthca: Enable unreliable connected transport X-Git-Tag: v2.6.13-rc1~45^2~26 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9e6970b5e96c3281e26b7d2e4e1839f356d5f5ff;p=platform%2Fkernel%2Flinux-exynos.git [PATCH] IB/mthca: Enable unreliable connected transport Add support for unreliable connected (UC) transport to mthca driver: - Add attributes for UC to modify QP table. - Add support for posting UC work requests. Signed-off-by: Roland Dreier Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c index 6bed9a3..c62e7cf 100644 --- a/drivers/infiniband/hw/mthca/mthca_qp.c +++ b/drivers/infiniband/hw/mthca/mthca_qp.c @@ -357,6 +357,9 @@ static const struct { [UD] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY), + [UC] = (IB_QP_PKEY_INDEX | + IB_QP_PORT | + IB_QP_ACCESS_FLAGS), [RC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), @@ -378,6 +381,9 @@ static const struct { [UD] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY), + [UC] = (IB_QP_PKEY_INDEX | + IB_QP_PORT | + IB_QP_ACCESS_FLAGS), [RC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), @@ -388,6 +394,11 @@ static const struct { [IB_QPS_RTR] = { .trans = MTHCA_TRANS_INIT2RTR, .req_param = { + [UC] = (IB_QP_AV | + IB_QP_PATH_MTU | + IB_QP_DEST_QPN | + IB_QP_RQ_PSN | + IB_QP_MAX_DEST_RD_ATOMIC), [RC] = (IB_QP_AV | IB_QP_PATH_MTU | IB_QP_DEST_QPN | @@ -398,6 +409,9 @@ static const struct { .opt_param = { [UD] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), + [UC] = (IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PKEY_INDEX), [RC] = (IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX), @@ -413,6 +427,8 @@ static const struct { .trans = MTHCA_TRANS_RTR2RTS, .req_param = { [UD] = IB_QP_SQ_PSN, + [UC] = (IB_QP_SQ_PSN | + IB_QP_MAX_QP_RD_ATOMIC), [RC] = (IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY | @@ -423,6 +439,11 @@ static const struct { .opt_param = { [UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), + [UC] = (IB_QP_CUR_STATE | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PKEY_INDEX | + IB_QP_PATH_MIG_STATE), [RC] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | @@ -442,6 +463,9 @@ static const struct { .opt_param = { [UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), + [UC] = (IB_QP_ACCESS_FLAGS | + IB_QP_ALT_PATH | + IB_QP_PATH_MIG_STATE), [RC] = (IB_QP_ACCESS_FLAGS | IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE | @@ -462,6 +486,10 @@ static const struct { .opt_param = { [UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), + [UC] = (IB_QP_CUR_STATE | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PATH_MIG_STATE), [RC] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | @@ -476,6 +504,14 @@ static const struct { .opt_param = { [UD] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), + [UC] = (IB_QP_AV | + IB_QP_MAX_QP_RD_ATOMIC | + IB_QP_MAX_DEST_RD_ATOMIC | + IB_QP_CUR_STATE | + IB_QP_ALT_PATH | + IB_QP_ACCESS_FLAGS | + IB_QP_PKEY_INDEX | + IB_QP_PATH_MIG_STATE), [RC] = (IB_QP_AV | IB_QP_TIMEOUT | IB_QP_RETRY_CNT | @@ -501,6 +537,7 @@ static const struct { .opt_param = { [UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), + [UC] = (IB_QP_CUR_STATE), [RC] = (IB_QP_CUR_STATE | IB_QP_MIN_RNR_TIMER), [MLX] = (IB_QP_CUR_STATE | @@ -1530,6 +1567,26 @@ int mthca_tavor_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, break; + case UC: + switch (wr->opcode) { + case IB_WR_RDMA_WRITE: + case IB_WR_RDMA_WRITE_WITH_IMM: + ((struct mthca_raddr_seg *) wqe)->raddr = + cpu_to_be64(wr->wr.rdma.remote_addr); + ((struct mthca_raddr_seg *) wqe)->rkey = + cpu_to_be32(wr->wr.rdma.rkey); + ((struct mthca_raddr_seg *) wqe)->reserved = 0; + wqe += sizeof (struct mthca_raddr_seg); + size += sizeof (struct mthca_raddr_seg) / 16; + break; + + default: + /* No extra segments required for sends */ + break; + } + + break; + case UD: ((struct mthca_tavor_ud_seg *) wqe)->lkey = cpu_to_be32(to_mah(wr->wr.ud.ah)->key); @@ -1815,9 +1872,29 @@ int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, sizeof (struct mthca_atomic_seg); break; + case IB_WR_RDMA_READ: + case IB_WR_RDMA_WRITE: + case IB_WR_RDMA_WRITE_WITH_IMM: + ((struct mthca_raddr_seg *) wqe)->raddr = + cpu_to_be64(wr->wr.rdma.remote_addr); + ((struct mthca_raddr_seg *) wqe)->rkey = + cpu_to_be32(wr->wr.rdma.rkey); + ((struct mthca_raddr_seg *) wqe)->reserved = 0; + wqe += sizeof (struct mthca_raddr_seg); + size += sizeof (struct mthca_raddr_seg) / 16; + break; + + default: + /* No extra segments required for sends */ + break; + } + + break; + + case UC: + switch (wr->opcode) { case IB_WR_RDMA_WRITE: case IB_WR_RDMA_WRITE_WITH_IMM: - case IB_WR_RDMA_READ: ((struct mthca_raddr_seg *) wqe)->raddr = cpu_to_be64(wr->wr.rdma.remote_addr); ((struct mthca_raddr_seg *) wqe)->rkey =