1*3ec648c6SKrzysztof Kozlowski /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2f48ad614SDennis Dalessandro /*
32e2ba09eSMike Marciniszyn * Copyright(c) 2015 - 2018 Intel Corporation.
4f48ad614SDennis Dalessandro */
5f48ad614SDennis Dalessandro
6145eba1aSCai Huoqing #ifndef _QP_H
7145eba1aSCai Huoqing #define _QP_H
8f48ad614SDennis Dalessandro #include <linux/hash.h>
9f48ad614SDennis Dalessandro #include <rdma/rdmavt_qp.h>
10f48ad614SDennis Dalessandro #include "verbs.h"
11f48ad614SDennis Dalessandro #include "sdma.h"
129636258fSMitko Haralanov #include "verbs_txreq.h"
13f48ad614SDennis Dalessandro
14f48ad614SDennis Dalessandro extern unsigned int hfi1_qp_table_size;
15f48ad614SDennis Dalessandro
161ac57c50SMike Marciniszyn extern const struct rvt_operation_params hfi1_post_parms[];
171ac57c50SMike Marciniszyn
18f48ad614SDennis Dalessandro /*
192e2ba09eSMike Marciniszyn * Driver specific s_flags starting at bit 31 down to HFI1_S_MIN_BIT_MASK
202e2ba09eSMike Marciniszyn *
212e2ba09eSMike Marciniszyn * HFI1_S_AHG_VALID - ahg header valid on chip
222e2ba09eSMike Marciniszyn * HFI1_S_AHG_CLEAR - have send engine clear ahg state
232e2ba09eSMike Marciniszyn * HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain
2437356e78SKaike Wan * HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource
25c098bbb0SKaike Wan * HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response
269e93e967SKaike Wan * HFI1_S_WAIT_HALT - halt the first leg send engine
272e2ba09eSMike Marciniszyn * HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi1
282e2ba09eSMike Marciniszyn */
292e2ba09eSMike Marciniszyn #define HFI1_S_AHG_VALID 0x80000000
302e2ba09eSMike Marciniszyn #define HFI1_S_AHG_CLEAR 0x40000000
312e2ba09eSMike Marciniszyn #define HFI1_S_WAIT_PIO_DRAIN 0x20000000
3237356e78SKaike Wan #define HFI1_S_WAIT_TID_SPACE 0x10000000
33c098bbb0SKaike Wan #define HFI1_S_WAIT_TID_RESP 0x08000000
349e93e967SKaike Wan #define HFI1_S_WAIT_HALT 0x04000000
352e2ba09eSMike Marciniszyn #define HFI1_S_MIN_BIT_MASK 0x01000000
362e2ba09eSMike Marciniszyn
372e2ba09eSMike Marciniszyn /*
382e2ba09eSMike Marciniszyn * overload wait defines
392e2ba09eSMike Marciniszyn */
402e2ba09eSMike Marciniszyn
412e2ba09eSMike Marciniszyn #define HFI1_S_ANY_WAIT_IO (RVT_S_ANY_WAIT_IO | HFI1_S_WAIT_PIO_DRAIN)
422e2ba09eSMike Marciniszyn #define HFI1_S_ANY_WAIT (HFI1_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND)
43572f0c33SKaike Wan #define HFI1_S_ANY_TID_WAIT_SEND (RVT_S_WAIT_SSN_CREDIT | RVT_S_WAIT_DMA)
442e2ba09eSMike Marciniszyn
452e2ba09eSMike Marciniszyn /*
465da0fc9dSDennis Dalessandro * Send if not busy or waiting for I/O and either
475da0fc9dSDennis Dalessandro * a RC response is pending or we can process send work requests.
485da0fc9dSDennis Dalessandro */
hfi1_send_ok(struct rvt_qp * qp)495da0fc9dSDennis Dalessandro static inline int hfi1_send_ok(struct rvt_qp *qp)
505da0fc9dSDennis Dalessandro {
515da0fc9dSDennis Dalessandro struct hfi1_qp_priv *priv = qp->priv;
525da0fc9dSDennis Dalessandro
535da0fc9dSDennis Dalessandro return !(qp->s_flags & (RVT_S_BUSY | HFI1_S_ANY_WAIT_IO)) &&
545da0fc9dSDennis Dalessandro (verbs_txreq_queued(iowait_get_ib_work(&priv->s_iowait)) ||
555da0fc9dSDennis Dalessandro (qp->s_flags & RVT_S_RESP_PENDING) ||
565da0fc9dSDennis Dalessandro !(qp->s_flags & RVT_S_ANY_WAIT_SEND));
575da0fc9dSDennis Dalessandro }
585da0fc9dSDennis Dalessandro
595da0fc9dSDennis Dalessandro /*
60f48ad614SDennis Dalessandro * free_ahg - clear ahg from QP
61f48ad614SDennis Dalessandro */
clear_ahg(struct rvt_qp * qp)62f48ad614SDennis Dalessandro static inline void clear_ahg(struct rvt_qp *qp)
63f48ad614SDennis Dalessandro {
64f48ad614SDennis Dalessandro struct hfi1_qp_priv *priv = qp->priv;
65f48ad614SDennis Dalessandro
66a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->ahgcount = 0;
672e2ba09eSMike Marciniszyn qp->s_flags &= ~(HFI1_S_AHG_VALID | HFI1_S_AHG_CLEAR);
68f48ad614SDennis Dalessandro if (priv->s_sde && qp->s_ahgidx >= 0)
69f48ad614SDennis Dalessandro sdma_ahg_free(priv->s_sde, qp->s_ahgidx);
70f48ad614SDennis Dalessandro qp->s_ahgidx = -1;
71f48ad614SDennis Dalessandro }
72f48ad614SDennis Dalessandro
73f48ad614SDennis Dalessandro /**
74f48ad614SDennis Dalessandro * hfi1_qp_wakeup - wake up on the indicated event
75f48ad614SDennis Dalessandro * @qp: the QP
76f48ad614SDennis Dalessandro * @flag: flag the qp on which the qp is stalled
77f48ad614SDennis Dalessandro */
78f48ad614SDennis Dalessandro void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag);
79f48ad614SDennis Dalessandro
80f48ad614SDennis Dalessandro struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5);
81f48ad614SDennis Dalessandro struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5);
82f48ad614SDennis Dalessandro
83e5c197acSMike Marciniszyn void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);
84f48ad614SDennis Dalessandro
855da0fc9dSDennis Dalessandro bool _hfi1_schedule_send(struct rvt_qp *qp);
865da0fc9dSDennis Dalessandro bool hfi1_schedule_send(struct rvt_qp *qp);
87f48ad614SDennis Dalessandro
88f48ad614SDennis Dalessandro void hfi1_migrate_qp(struct rvt_qp *qp);
89f48ad614SDennis Dalessandro
90f48ad614SDennis Dalessandro /*
91f48ad614SDennis Dalessandro * Functions provided by hfi1 driver for rdmavt to use
92f48ad614SDennis Dalessandro */
930f4d027cSLeon Romanovsky void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);
94f48ad614SDennis Dalessandro void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
95f48ad614SDennis Dalessandro unsigned free_all_qps(struct rvt_dev_info *rdi);
96f48ad614SDennis Dalessandro void notify_qp_reset(struct rvt_qp *qp);
97f48ad614SDennis Dalessandro int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp,
98f48ad614SDennis Dalessandro struct ib_qp_attr *attr);
99f48ad614SDennis Dalessandro void flush_qp_waiters(struct rvt_qp *qp);
100f48ad614SDennis Dalessandro void notify_error_qp(struct rvt_qp *qp);
101f48ad614SDennis Dalessandro void stop_send_queue(struct rvt_qp *qp);
102f48ad614SDennis Dalessandro void quiesce_qp(struct rvt_qp *qp);
103f48ad614SDennis Dalessandro u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu);
104f48ad614SDennis Dalessandro int mtu_to_path_mtu(u32 mtu);
105f48ad614SDennis Dalessandro void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl);
1065da0fc9dSDennis Dalessandro void hfi1_qp_unbusy(struct rvt_qp *qp, struct iowait_work *wait);
107f48ad614SDennis Dalessandro #endif /* _QP_H */
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