1f48ad614SDennis Dalessandro #ifndef _QP_H 2f48ad614SDennis Dalessandro #define _QP_H 3f48ad614SDennis Dalessandro /* 42e2ba09eSMike Marciniszyn * Copyright(c) 2015 - 2018 Intel Corporation. 5f48ad614SDennis Dalessandro * 6f48ad614SDennis Dalessandro * This file is provided under a dual BSD/GPLv2 license. When using or 7f48ad614SDennis Dalessandro * redistributing this file, you may do so under either license. 8f48ad614SDennis Dalessandro * 9f48ad614SDennis Dalessandro * GPL LICENSE SUMMARY 10f48ad614SDennis Dalessandro * 11f48ad614SDennis Dalessandro * This program is free software; you can redistribute it and/or modify 12f48ad614SDennis Dalessandro * it under the terms of version 2 of the GNU General Public License as 13f48ad614SDennis Dalessandro * published by the Free Software Foundation. 14f48ad614SDennis Dalessandro * 15f48ad614SDennis Dalessandro * This program is distributed in the hope that it will be useful, but 16f48ad614SDennis Dalessandro * WITHOUT ANY WARRANTY; without even the implied warranty of 17f48ad614SDennis Dalessandro * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18f48ad614SDennis Dalessandro * General Public License for more details. 19f48ad614SDennis Dalessandro * 20f48ad614SDennis Dalessandro * BSD LICENSE 21f48ad614SDennis Dalessandro * 22f48ad614SDennis Dalessandro * Redistribution and use in source and binary forms, with or without 23f48ad614SDennis Dalessandro * modification, are permitted provided that the following conditions 24f48ad614SDennis Dalessandro * are met: 25f48ad614SDennis Dalessandro * 26f48ad614SDennis Dalessandro * - Redistributions of source code must retain the above copyright 27f48ad614SDennis Dalessandro * notice, this list of conditions and the following disclaimer. 28f48ad614SDennis Dalessandro * - Redistributions in binary form must reproduce the above copyright 29f48ad614SDennis Dalessandro * notice, this list of conditions and the following disclaimer in 30f48ad614SDennis Dalessandro * the documentation and/or other materials provided with the 31f48ad614SDennis Dalessandro * distribution. 32f48ad614SDennis Dalessandro * - Neither the name of Intel Corporation nor the names of its 33f48ad614SDennis Dalessandro * contributors may be used to endorse or promote products derived 34f48ad614SDennis Dalessandro * from this software without specific prior written permission. 35f48ad614SDennis Dalessandro * 36f48ad614SDennis Dalessandro * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 37f48ad614SDennis Dalessandro * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 38f48ad614SDennis Dalessandro * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 39f48ad614SDennis Dalessandro * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 40f48ad614SDennis Dalessandro * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41f48ad614SDennis Dalessandro * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42f48ad614SDennis Dalessandro * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 43f48ad614SDennis Dalessandro * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 44f48ad614SDennis Dalessandro * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 45f48ad614SDennis Dalessandro * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 46f48ad614SDennis Dalessandro * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 47f48ad614SDennis Dalessandro * 48f48ad614SDennis Dalessandro */ 49f48ad614SDennis Dalessandro 50f48ad614SDennis Dalessandro #include <linux/hash.h> 51f48ad614SDennis Dalessandro #include <rdma/rdmavt_qp.h> 52f48ad614SDennis Dalessandro #include "verbs.h" 53f48ad614SDennis Dalessandro #include "sdma.h" 549636258fSMitko Haralanov #include "verbs_txreq.h" 55f48ad614SDennis Dalessandro 56f48ad614SDennis Dalessandro extern unsigned int hfi1_qp_table_size; 57f48ad614SDennis Dalessandro 581ac57c50SMike Marciniszyn extern const struct rvt_operation_params hfi1_post_parms[]; 591ac57c50SMike Marciniszyn 60f48ad614SDennis Dalessandro /* 612e2ba09eSMike Marciniszyn * Driver specific s_flags starting at bit 31 down to HFI1_S_MIN_BIT_MASK 622e2ba09eSMike Marciniszyn * 632e2ba09eSMike Marciniszyn * HFI1_S_AHG_VALID - ahg header valid on chip 642e2ba09eSMike Marciniszyn * HFI1_S_AHG_CLEAR - have send engine clear ahg state 652e2ba09eSMike Marciniszyn * HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain 6637356e78SKaike Wan * HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource 67c098bbb0SKaike Wan * HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response 682e2ba09eSMike Marciniszyn * HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi1 692e2ba09eSMike Marciniszyn */ 702e2ba09eSMike Marciniszyn #define HFI1_S_AHG_VALID 0x80000000 712e2ba09eSMike Marciniszyn #define HFI1_S_AHG_CLEAR 0x40000000 722e2ba09eSMike Marciniszyn #define HFI1_S_WAIT_PIO_DRAIN 0x20000000 7337356e78SKaike Wan #define HFI1_S_WAIT_TID_SPACE 0x10000000 74c098bbb0SKaike Wan #define HFI1_S_WAIT_TID_RESP 0x08000000 752e2ba09eSMike Marciniszyn #define HFI1_S_MIN_BIT_MASK 0x01000000 762e2ba09eSMike Marciniszyn 772e2ba09eSMike Marciniszyn /* 782e2ba09eSMike Marciniszyn * overload wait defines 792e2ba09eSMike Marciniszyn */ 802e2ba09eSMike Marciniszyn 812e2ba09eSMike Marciniszyn #define HFI1_S_ANY_WAIT_IO (RVT_S_ANY_WAIT_IO | HFI1_S_WAIT_PIO_DRAIN) 822e2ba09eSMike Marciniszyn #define HFI1_S_ANY_WAIT (HFI1_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND) 832e2ba09eSMike Marciniszyn 842e2ba09eSMike Marciniszyn /* 855da0fc9dSDennis Dalessandro * Send if not busy or waiting for I/O and either 865da0fc9dSDennis Dalessandro * a RC response is pending or we can process send work requests. 875da0fc9dSDennis Dalessandro */ 885da0fc9dSDennis Dalessandro static inline int hfi1_send_ok(struct rvt_qp *qp) 895da0fc9dSDennis Dalessandro { 905da0fc9dSDennis Dalessandro struct hfi1_qp_priv *priv = qp->priv; 915da0fc9dSDennis Dalessandro 925da0fc9dSDennis Dalessandro return !(qp->s_flags & (RVT_S_BUSY | HFI1_S_ANY_WAIT_IO)) && 935da0fc9dSDennis Dalessandro (verbs_txreq_queued(iowait_get_ib_work(&priv->s_iowait)) || 945da0fc9dSDennis Dalessandro (qp->s_flags & RVT_S_RESP_PENDING) || 955da0fc9dSDennis Dalessandro !(qp->s_flags & RVT_S_ANY_WAIT_SEND)); 965da0fc9dSDennis Dalessandro } 975da0fc9dSDennis Dalessandro 985da0fc9dSDennis Dalessandro /* 99f48ad614SDennis Dalessandro * free_ahg - clear ahg from QP 100f48ad614SDennis Dalessandro */ 101f48ad614SDennis Dalessandro static inline void clear_ahg(struct rvt_qp *qp) 102f48ad614SDennis Dalessandro { 103f48ad614SDennis Dalessandro struct hfi1_qp_priv *priv = qp->priv; 104f48ad614SDennis Dalessandro 105a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->ahgcount = 0; 1062e2ba09eSMike Marciniszyn qp->s_flags &= ~(HFI1_S_AHG_VALID | HFI1_S_AHG_CLEAR); 107f48ad614SDennis Dalessandro if (priv->s_sde && qp->s_ahgidx >= 0) 108f48ad614SDennis Dalessandro sdma_ahg_free(priv->s_sde, qp->s_ahgidx); 109f48ad614SDennis Dalessandro qp->s_ahgidx = -1; 110f48ad614SDennis Dalessandro } 111f48ad614SDennis Dalessandro 112f48ad614SDennis Dalessandro /** 113f48ad614SDennis Dalessandro * hfi1_create_qp - create a queue pair for a device 114f48ad614SDennis Dalessandro * @ibpd: the protection domain who's device we create the queue pair for 115f48ad614SDennis Dalessandro * @init_attr: the attributes of the queue pair 116f48ad614SDennis Dalessandro * @udata: user data for libibverbs.so 117f48ad614SDennis Dalessandro * 118f48ad614SDennis Dalessandro * Returns the queue pair on success, otherwise returns an errno. 119f48ad614SDennis Dalessandro * 120f48ad614SDennis Dalessandro * Called by the ib_create_qp() core verbs function. 121f48ad614SDennis Dalessandro */ 122f48ad614SDennis Dalessandro struct ib_qp *hfi1_create_qp(struct ib_pd *ibpd, 123f48ad614SDennis Dalessandro struct ib_qp_init_attr *init_attr, 124f48ad614SDennis Dalessandro struct ib_udata *udata); 125f48ad614SDennis Dalessandro 126f48ad614SDennis Dalessandro /** 127f48ad614SDennis Dalessandro * hfi1_qp_wakeup - wake up on the indicated event 128f48ad614SDennis Dalessandro * @qp: the QP 129f48ad614SDennis Dalessandro * @flag: flag the qp on which the qp is stalled 130f48ad614SDennis Dalessandro */ 131f48ad614SDennis Dalessandro void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag); 132f48ad614SDennis Dalessandro 133f48ad614SDennis Dalessandro struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5); 134f48ad614SDennis Dalessandro struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5); 135f48ad614SDennis Dalessandro 136e5c197acSMike Marciniszyn void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter); 137f48ad614SDennis Dalessandro 1385da0fc9dSDennis Dalessandro bool _hfi1_schedule_send(struct rvt_qp *qp); 1395da0fc9dSDennis Dalessandro bool hfi1_schedule_send(struct rvt_qp *qp); 140f48ad614SDennis Dalessandro 141f48ad614SDennis Dalessandro void hfi1_migrate_qp(struct rvt_qp *qp); 142f48ad614SDennis Dalessandro 143f48ad614SDennis Dalessandro /* 144f48ad614SDennis Dalessandro * Functions provided by hfi1 driver for rdmavt to use 145f48ad614SDennis Dalessandro */ 1460f4d027cSLeon Romanovsky void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp); 147f48ad614SDennis Dalessandro void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); 148f48ad614SDennis Dalessandro unsigned free_all_qps(struct rvt_dev_info *rdi); 149f48ad614SDennis Dalessandro void notify_qp_reset(struct rvt_qp *qp); 150f48ad614SDennis Dalessandro int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, 151f48ad614SDennis Dalessandro struct ib_qp_attr *attr); 152f48ad614SDennis Dalessandro void flush_qp_waiters(struct rvt_qp *qp); 153f48ad614SDennis Dalessandro void notify_error_qp(struct rvt_qp *qp); 154f48ad614SDennis Dalessandro void stop_send_queue(struct rvt_qp *qp); 155f48ad614SDennis Dalessandro void quiesce_qp(struct rvt_qp *qp); 156f48ad614SDennis Dalessandro u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); 157f48ad614SDennis Dalessandro int mtu_to_path_mtu(u32 mtu); 158f48ad614SDennis Dalessandro void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl); 1595da0fc9dSDennis Dalessandro void hfi1_qp_unbusy(struct rvt_qp *qp, struct iowait_work *wait); 160f48ad614SDennis Dalessandro #endif /* _QP_H */ 161