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1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */2/*3 * Copyright(c) 2015 - 2018 Intel Corporation.4 */5 6#ifndef _QP_H7#define _QP_H8#include <linux/hash.h>9#include <rdma/rdmavt_qp.h>10#include "verbs.h"11#include "sdma.h"12#include "verbs_txreq.h"13 14extern unsigned int hfi1_qp_table_size;15 16extern const struct rvt_operation_params hfi1_post_parms[];17 18/*19 * Driver specific s_flags starting at bit 31 down to HFI1_S_MIN_BIT_MASK20 *21 * HFI1_S_AHG_VALID - ahg header valid on chip22 * HFI1_S_AHG_CLEAR - have send engine clear ahg state23 * HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain24 * HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource25 * HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response26 * HFI1_S_WAIT_HALT - halt the first leg send engine27 * HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi128 */29#define HFI1_S_AHG_VALID 0x8000000030#define HFI1_S_AHG_CLEAR 0x4000000031#define HFI1_S_WAIT_PIO_DRAIN 0x2000000032#define HFI1_S_WAIT_TID_SPACE 0x1000000033#define HFI1_S_WAIT_TID_RESP 0x0800000034#define HFI1_S_WAIT_HALT 0x0400000035#define HFI1_S_MIN_BIT_MASK 0x0100000036 37/*38 * overload wait defines39 */40 41#define HFI1_S_ANY_WAIT_IO (RVT_S_ANY_WAIT_IO | HFI1_S_WAIT_PIO_DRAIN)42#define HFI1_S_ANY_WAIT (HFI1_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND)43#define HFI1_S_ANY_TID_WAIT_SEND (RVT_S_WAIT_SSN_CREDIT | RVT_S_WAIT_DMA)44 45/*46 * Send if not busy or waiting for I/O and either47 * a RC response is pending or we can process send work requests.48 */49static inline int hfi1_send_ok(struct rvt_qp *qp)50{51 struct hfi1_qp_priv *priv = qp->priv;52 53 return !(qp->s_flags & (RVT_S_BUSY | HFI1_S_ANY_WAIT_IO)) &&54 (verbs_txreq_queued(iowait_get_ib_work(&priv->s_iowait)) ||55 (qp->s_flags & RVT_S_RESP_PENDING) ||56 !(qp->s_flags & RVT_S_ANY_WAIT_SEND));57}58 59/*60 * free_ahg - clear ahg from QP61 */62static inline void clear_ahg(struct rvt_qp *qp)63{64 struct hfi1_qp_priv *priv = qp->priv;65 66 priv->s_ahg->ahgcount = 0;67 qp->s_flags &= ~(HFI1_S_AHG_VALID | HFI1_S_AHG_CLEAR);68 if (priv->s_sde && qp->s_ahgidx >= 0)69 sdma_ahg_free(priv->s_sde, qp->s_ahgidx);70 qp->s_ahgidx = -1;71}72 73/**74 * hfi1_qp_wakeup - wake up on the indicated event75 * @qp: the QP76 * @flag: flag the qp on which the qp is stalled77 */78void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag);79 80struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5);81struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5);82 83void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);84 85bool _hfi1_schedule_send(struct rvt_qp *qp);86bool hfi1_schedule_send(struct rvt_qp *qp);87 88void hfi1_migrate_qp(struct rvt_qp *qp);89 90/*91 * Functions provided by hfi1 driver for rdmavt to use92 */93void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);94void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);95unsigned free_all_qps(struct rvt_dev_info *rdi);96void notify_qp_reset(struct rvt_qp *qp);97int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp,98 struct ib_qp_attr *attr);99void flush_qp_waiters(struct rvt_qp *qp);100void notify_error_qp(struct rvt_qp *qp);101void stop_send_queue(struct rvt_qp *qp);102void quiesce_qp(struct rvt_qp *qp);103u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu);104int mtu_to_path_mtu(u32 mtu);105void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl);106void hfi1_qp_unbusy(struct rvt_qp *qp, struct iowait_work *wait);107#endif /* _QP_H */108