mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
37356e7832
The hfi1 hardware flow is a hardware flow-control mechanism for a KDETH
data packet that is received on a hfi1 port. It validates the packet by
checking both the generation and sequence. Each QP that uses the TID RDMA
mechanism will allocate a hardware flow from its receiving context for
any incoming KDETH data packets.
This patch implements:
(1) a function to allocate hardware flow
(2) a function to free hardware flow
(3) a function to initialize hardware flow generation for a receiving
context
(4) a wait mechanism if the hardware flow is not available
(4) a function to remove the qp from the wait queue for hardware flow
when the qp is reset or destroyed.
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
159 lines
5.6 KiB
C
159 lines
5.6 KiB
C
#ifndef _QP_H
|
|
#define _QP_H
|
|
/*
|
|
* Copyright(c) 2015 - 2018 Intel Corporation.
|
|
*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* - Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#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_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_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)
|
|
|
|
/*
|
|
* 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_create_qp - create a queue pair for a device
|
|
* @ibpd: the protection domain who's device we create the queue pair for
|
|
* @init_attr: the attributes of the queue pair
|
|
* @udata: user data for libibverbs.so
|
|
*
|
|
* Returns the queue pair on success, otherwise returns an errno.
|
|
*
|
|
* Called by the ib_create_qp() core verbs function.
|
|
*/
|
|
struct ib_qp *hfi1_create_qp(struct ib_pd *ibpd,
|
|
struct ib_qp_init_attr *init_attr,
|
|
struct ib_udata *udata);
|
|
|
|
/**
|
|
* 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 */
|