diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/qp.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/qp.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/qp.h b/drivers/infiniband/hw/hfi1/qp.h new file mode 100644 index 000000000..078cff756 --- /dev/null +++ b/drivers/infiniband/hw/hfi1/qp.h @@ -0,0 +1,153 @@ +#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[]; + +/* + * 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) +{ + return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) && + (verbs_txreq_queued(qp) || + (qp->s_flags & RVT_S_RESP_PENDING) || + !(qp->s_flags & RVT_S_ANY_WAIT_SEND)); +} + +/* + * 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_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_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) + +/* + * 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); + +void _hfi1_schedule_send(struct rvt_qp *qp); +void 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); +#endif /* _QP_H */ |