diff options
| author |   Kaike Wan <kaike.wan@intel.com> | 2019-01-23 21:48:28 -0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2019-02-05 18:07:43 -0500 |
| commit | c098bbb00cd1986cbb58ed1712643f80ed00fcc3 (patch) | |
| tree | 3204232a72a64870d0f93f447ea1c73792f2fd39 /drivers/infiniband/hw/hfi1 | |
| parent | Merge branch 'tid-read' into hfi1-tid (diff) | |
| download | linux-dev-c098bbb00cd1986cbb58ed1712643f80ed00fcc3.tar.xz linux-dev-c098bbb00cd1986cbb58ed1712643f80ed00fcc3.zip | |
IB/hfi1: Build TID RDMA WRITE request
This patch adds the functions to build TID RDMA WRITE request.
The work request opcode, packet opcode, and packet formats for TID
RDMA WRITE protocol are also defined in this patch.
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/qp.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/tid_rdma.c | 38 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/tid_rdma.h | 3 |
3 files changed, 43 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/qp.h b/drivers/infiniband/hw/hfi1/qp.h index ce25a27aa4a1..f74e2509e8b9 100644 --- a/drivers/infiniband/hw/hfi1/qp.h +++ b/drivers/infiniband/hw/hfi1/qp.h @@ -64,12 +64,14 @@ extern const struct rvt_operation_params hfi1_post_parms[]; * HFI1_S_AHG_CLEAR - have send engine clear ahg state * HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain * HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource + * HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response * HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi1 */ #define HFI1_S_AHG_VALID 0x80000000 #define HFI1_S_AHG_CLEAR 0x40000000 #define HFI1_S_WAIT_PIO_DRAIN 0x20000000 #define HFI1_S_WAIT_TID_SPACE 0x10000000 +#define HFI1_S_WAIT_TID_RESP 0x08000000 #define HFI1_S_MIN_BIT_MASK 0x01000000 /* diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c index 0ee79403acaf..089e301d9bcd 100644 --- a/drivers/infiniband/hw/hfi1/tid_rdma.c +++ b/drivers/infiniband/hw/hfi1/tid_rdma.c @@ -2975,3 +2975,41 @@ void setup_tid_rdma_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe) exit: rcu_read_unlock(); } + +/* TID RDMA WRITE functions */ + +u32 hfi1_build_tid_rdma_write_req(struct rvt_qp *qp, struct rvt_swqe *wqe, + struct ib_other_headers *ohdr, + u32 *bth1, u32 *bth2, u32 *len) +{ + struct hfi1_qp_priv *qpriv = qp->priv; + struct tid_rdma_request *req = wqe_to_tid_req(wqe); + struct tid_rdma_params *remote; + + rcu_read_lock(); + remote = rcu_dereference(qpriv->tid_rdma.remote); + /* + * Set the number of flow to be used based on negotiated + * parameters. + */ + req->n_flows = remote->max_write; + req->state = TID_REQUEST_ACTIVE; + + KDETH_RESET(ohdr->u.tid_rdma.w_req.kdeth0, KVER, 0x1); + KDETH_RESET(ohdr->u.tid_rdma.w_req.kdeth1, JKEY, remote->jkey); + ohdr->u.tid_rdma.w_req.reth.vaddr = + cpu_to_be64(wqe->rdma_wr.remote_addr + (wqe->length - *len)); + ohdr->u.tid_rdma.w_req.reth.rkey = + cpu_to_be32(wqe->rdma_wr.rkey); + ohdr->u.tid_rdma.w_req.reth.length = cpu_to_be32(*len); + ohdr->u.tid_rdma.w_req.verbs_qp = cpu_to_be32(qp->remote_qpn); + *bth1 &= ~RVT_QPN_MASK; + *bth1 |= remote->qp; + qp->s_state = TID_OP(WRITE_REQ); + qp->s_flags |= HFI1_S_WAIT_TID_RESP; + *bth2 |= IB_BTH_REQ_ACK; + *len = 0; + + rcu_read_unlock(); + return sizeof(ohdr->u.tid_rdma.w_req) / sizeof(u32); +} diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.h b/drivers/infiniband/hw/hfi1/tid_rdma.h index a53598ce45b2..baba539b2b80 100644 --- a/drivers/infiniband/hw/hfi1/tid_rdma.h +++ b/drivers/infiniband/hw/hfi1/tid_rdma.h @@ -233,4 +233,7 @@ static inline void hfi1_setup_tid_rdma_wqe(struct rvt_qp *qp, setup_tid_rdma_wqe(qp, wqe); } +u32 hfi1_build_tid_rdma_write_req(struct rvt_qp *qp, struct rvt_swqe *wqe, + struct ib_other_headers *ohdr, + u32 *bth1, u32 *bth2, u32 *len); #endif /* HFI1_TID_RDMA_H */ |