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
  13 static 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
  25 static 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
  35 static 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
  44 static 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
  52 struct rvt_ack_entry *find_prev_entry(struct rvt_qp *qp, u32 psn, u8 *prev,
  53                                       u8 *prev_ack, bool *scheduled);
  54 int do_rc_ack(struct rvt_qp *qp, u32 aeth, u32 psn, int opcode, u64 val,
  55               struct hfi1_ctxtdata *rcd);
  56 struct rvt_swqe *do_rc_completion(struct rvt_qp *qp, struct rvt_swqe *wqe,
  57                                   struct hfi1_ibport *ibp);
  58
  59 #endif /* HFI1_RC_H */