qp.h (3435B)
1/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */ 2/* 3 * Copyright(c) 2015 - 2018 Intel Corporation. 4 */ 5 6#ifndef _QP_H 7#define _QP_H 8#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_MASK 20 * 21 * HFI1_S_AHG_VALID - ahg header valid on chip 22 * HFI1_S_AHG_CLEAR - have send engine clear ahg state 23 * HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain 24 * HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource 25 * HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response 26 * HFI1_S_WAIT_HALT - halt the first leg send engine 27 * HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi1 28 */ 29#define HFI1_S_AHG_VALID 0x80000000 30#define HFI1_S_AHG_CLEAR 0x40000000 31#define HFI1_S_WAIT_PIO_DRAIN 0x20000000 32#define HFI1_S_WAIT_TID_SPACE 0x10000000 33#define HFI1_S_WAIT_TID_RESP 0x08000000 34#define HFI1_S_WAIT_HALT 0x04000000 35#define HFI1_S_MIN_BIT_MASK 0x01000000 36 37/* 38 * overload wait defines 39 */ 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 either 47 * 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 QP 61 */ 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 event 75 * @qp: the QP 76 * @flag: flag the qp on which the qp is stalled 77 */ 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 use 92 */ 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 */