LXR linux/drivers/infiniband/hw/hfi1/qp.h

   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 */
 108