diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/qp.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/qp.h | 107 |
1 files changed, 107 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..cdf87bc6a --- /dev/null +++ b/drivers/infiniband/hw/hfi1/qp.h @@ -0,0 +1,107 @@ +/* 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 */ |