LXR linux/drivers/infiniband/hw/hfi1/rc.h

   1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
   2/*
   3 * Copyright(c) 2018 Intel Corporation.
   4 *
   5 */
   6
   7#ifndef HFI1_RC_H
   8#define HFI1_RC_H
   9
  10/* cut down ridiculously long IB macro names */
  11#define OP(x) IB_OPCODE_RC_##x
  12
  13static inline void update_ack_queue(struct rvt_qp *qp, unsigned int n)
  14{
  15        unsigned int next;
  16
  17        next = n + 1;
  18        if (next > rvt_size_atomic(ib_to_rvt(qp->ibqp.device)))
  19                next = 0;
  20        qp->s_tail_ack_queue = next;
  21        qp->s_acked_ack_queue = next;
  22        qp->s_ack_state = OP(ACKNOWLEDGE);
  23}
  24
  25static inline void rc_defered_ack(struct hfi1_ctxtdata *rcd,
  26                                  struct rvt_qp *qp)
  27{
  28        if (list_empty(&qp->rspwait)) {
  29                qp->r_flags |= RVT_R_RSP_NAK;
  30                rvt_get_qp(qp);
  31                list_add_tail(&qp->rspwait, &rcd->qp_wait_list);
  32        }
  33}
  34
  35static inline u32 restart_sge(struct rvt_sge_state *ss, struct rvt_swqe *wqe,
  36                              u32 psn, u32 pmtu)
  37{
  38        u32 len;
  39
  40        len = delta_psn(psn, wqe->psn) * pmtu;
  41        return rvt_restart_sge(ss, wqe, len);
  42}
  43
  44static inline void release_rdma_sge_mr(struct rvt_ack_entry *e)
  45{
  46        if (e->rdma_sge.mr) {
  47                rvt_put_mr(e->rdma_sge.mr);
  48                e->rdma_sge.mr = NULL;
  49        }
  50}
  51
  52struct rvt_ack_entry *find_prev_entry(struct rvt_qp *qp, u32 psn, u8 *prev,
  53                                      u8 *prev_ack, bool *scheduled);
  54int do_rc_ack(struct rvt_qp *qp, u32 aeth, u32 psn, int opcode, u64 val,
  55              struct hfi1_ctxtdata *rcd);
  56struct rvt_swqe *do_rc_completion(struct rvt_qp *qp, struct rvt_swqe *wqe,
  57                                  struct hfi1_ibport *ibp);
  58
  59#endif /* HFI1_RC_H */
  60