hw/hfi1/rc.h

0001 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
0002 /*
0003  * Copyright(c) 2018 Intel Corporation.
0004  *
0005  */
0006
0007 #ifndef HFI1_RC_H
0008 #define HFI1_RC_H
0009
0010 /* cut down ridiculously long IB macro names */
0011 #define OP(x) IB_OPCODE_RC_##x
0012
0013 static inline void update_ack_queue(struct rvt_qp *qp, unsigned int n)
0014 {
0015     unsigned int next;
0016
0017     next = n + 1;
0018     if (next > rvt_size_atomic(ib_to_rvt(qp->ibqp.device)))
0019         next = 0;
0020     qp->s_tail_ack_queue = next;
0021     qp->s_acked_ack_queue = next;
0022     qp->s_ack_state = OP(ACKNOWLEDGE);
0023 }
0024
0025 static inline void rc_defered_ack(struct hfi1_ctxtdata *rcd,
0026                   struct rvt_qp *qp)
0027 {
0028     if (list_empty(&qp->rspwait)) {
0029         qp->r_flags |= RVT_R_RSP_NAK;
0030         rvt_get_qp(qp);
0031         list_add_tail(&qp->rspwait, &rcd->qp_wait_list);
0032     }
0033 }
0034
0035 static inline u32 restart_sge(struct rvt_sge_state *ss, struct rvt_swqe *wqe,
0036                   u32 psn, u32 pmtu)
0037 {
0038     u32 len;
0039
0040     len = delta_psn(psn, wqe->psn) * pmtu;
0041     return rvt_restart_sge(ss, wqe, len);
0042 }
0043
0044 static inline void release_rdma_sge_mr(struct rvt_ack_entry *e)
0045 {
0046     if (e->rdma_sge.mr) {
0047         rvt_put_mr(e->rdma_sge.mr);
0048         e->rdma_sge.mr = NULL;
0049     }
0050 }
0051
0052 struct rvt_ack_entry *find_prev_entry(struct rvt_qp *qp, u32 psn, u8 *prev,
0053                       u8 *prev_ack, bool *scheduled);
0054 int do_rc_ack(struct rvt_qp *qp, u32 aeth, u32 psn, int opcode, u64 val,
0055           struct hfi1_ctxtdata *rcd);
0056 struct rvt_swqe *do_rc_completion(struct rvt_qp *qp, struct rvt_swqe *wqe,
0057                   struct hfi1_ibport *ibp);
0058
0059 #endif /* HFI1_RC_H */