xref: /linux/drivers/infiniband/hw/hfi1/rc.h (revision c39f2d9db0fd81ea20bb5cce9b3f082ca63753e2)
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 
update_ack_queue(struct rvt_qp * qp,unsigned int n)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 
rc_defered_ack(struct hfi1_ctxtdata * rcd,struct rvt_qp * qp)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 
restart_sge(struct rvt_sge_state * ss,struct rvt_swqe * wqe,u32 psn,u32 pmtu)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 
release_rdma_sge_mr(struct rvt_ack_entry * e)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 */
60