/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright(c) 2015 - 2018 Intel Corporation.
*/
#ifndef _QP_H
#define _QP_H
#include <linux/hash.h>
#include <rdma/rdmavt_qp.h>
#include "verbs.h"
#include "sdma.h"
#include "verbs_txreq.h"
extern unsigned int hfi1_qp_table_size;
extern const struct rvt_operation_params hfi1_post_parms[];
/*
* Driver specific s_flags starting at bit 31 down to HFI1_S_MIN_BIT_MASK
*
* HFI1_S_AHG_VALID - ahg header valid on chip
* HFI1_S_AHG_CLEAR - have send engine clear ahg state
* HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain
* HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource
* HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response
* HFI1_S_WAIT_HALT - halt the first leg send engine
* HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi1
*/
#define HFI1_S_AHG_VALID 0x80000000
#define HFI1_S_AHG_CLEAR 0x40000000
#define HFI1_S_WAIT_PIO_DRAIN 0x20000000
#define HFI1_S_WAIT_TID_SPACE 0x10000000
#define HFI1_S_WAIT_TID_RESP 0x08000000
#define HFI1_S_WAIT_HALT 0x04000000
#define HFI1_S_MIN_BIT_MASK 0x01000000
/*
* overload wait defines
*/
#define HFI1_S_ANY_WAIT_IO (RVT_S_ANY_WAIT_IO | HFI1_S_WAIT_PIO_DRAIN)
#define HFI1_S_ANY_WAIT (HFI1_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND)
#define HFI1_S_ANY_TID_WAIT_SEND (RVT_S_WAIT_SSN_CREDIT | RVT_S_WAIT_DMA)
/*
* Send if not busy or waiting for I/O and either
* a RC response is pending or we can process send work requests.
*/
static inline int hfi1_send_ok(struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
return !(qp->s_flags & (RVT_S_BUSY | HFI1_S_ANY_WAIT_IO)) &&
(verbs_txreq_queued(iowait_get_ib_work(&priv->s_iowait)) ||
(qp->s_flags & RVT_S_RESP_PENDING) ||
!(qp->s_flags & RVT_S_ANY_WAIT_SEND));
}
/*
* free_ahg - clear ahg from QP
*/
static inline void clear_ahg(struct rvt_qp *qp)
{
struct hfi1_qp_priv *priv = qp->priv;
priv->s_ahg->ahgcount = 0;
qp->s_flags &= ~(HFI1_S_AHG_VALID | HFI1_S_AHG_CLEAR);
if (priv->s_sde && qp->s_ahgidx >= 0)
sdma_ahg_free(priv->s_sde, qp->s_ahgidx);
qp->s_ahgidx = -1;
}
/**
* hfi1_qp_wakeup - wake up on the indicated event
* @qp: the QP
* @flag: flag the qp on which the qp is stalled
*/
void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag);
struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5);
struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5);
void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);
bool _hfi1_schedule_send(struct rvt_qp *qp);
bool hfi1_schedule_send(struct rvt_qp *qp);
void hfi1_migrate_qp(struct rvt_qp *qp);
/*
* Functions provided by hfi1 driver for rdmavt to use
*/
void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);
void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
unsigned free_all_qps(struct rvt_dev_info *rdi);
void notify_qp_reset(struct rvt_qp *qp);
int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp,
struct ib_qp_attr *attr);
void flush_qp_waiters(struct rvt_qp *qp);
void notify_error_qp(struct rvt_qp *qp);
void stop_send_queue(struct rvt_qp *qp);
void quiesce_qp(struct rvt_qp *qp);
u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu);
int mtu_to_path_mtu(u32 mtu);
void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl);
void hfi1_qp_unbusy(struct rvt_qp *qp, struct iowait_work *wait);
#endif /* _QP_H */
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