1 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */ 2 /* 3 * Copyright(c) 2015 - 2018 Intel Corporation. 4 */ 5 6 #ifndef _QP_H 7 #define _QP_H 8 #include <linux/hash.h> 9 #include <rdma/rdmavt_qp.h> 10 #include "verbs.h" 11 #include "sdma.h" 12 #include "verbs_txreq.h" 13 14 extern unsigned int hfi1_qp_table_size; 15 16 extern const struct rvt_operation_params hfi1_post_parms[]; 17 18 /* 19 * Driver specific s_flags starting at bit 31 down to HFI1_S_MIN_BIT_MASK 20 * 21 * HFI1_S_AHG_VALID - ahg header valid on chip 22 * HFI1_S_AHG_CLEAR - have send engine clear ahg state 23 * HFI1_S_WAIT_PIO_DRAIN - qp waiting for PIOs to drain 24 * HFI1_S_WAIT_TID_SPACE - a QP is waiting for TID resource 25 * HFI1_S_WAIT_TID_RESP - waiting for a TID RDMA WRITE response 26 * HFI1_S_WAIT_HALT - halt the first leg send engine 27 * HFI1_S_MIN_BIT_MASK - the lowest bit that can be used by hfi1 28 */ 29 #define HFI1_S_AHG_VALID 0x80000000 30 #define HFI1_S_AHG_CLEAR 0x40000000 31 #define HFI1_S_WAIT_PIO_DRAIN 0x20000000 32 #define HFI1_S_WAIT_TID_SPACE 0x10000000 33 #define HFI1_S_WAIT_TID_RESP 0x08000000 34 #define HFI1_S_WAIT_HALT 0x04000000 35 #define HFI1_S_MIN_BIT_MASK 0x01000000 36 37 /* 38 * overload wait defines 39 */ 40 41 #define HFI1_S_ANY_WAIT_IO (RVT_S_ANY_WAIT_IO | HFI1_S_WAIT_PIO_DRAIN) 42 #define HFI1_S_ANY_WAIT (HFI1_S_ANY_WAIT_IO | RVT_S_ANY_WAIT_SEND) 43 #define HFI1_S_ANY_TID_WAIT_SEND (RVT_S_WAIT_SSN_CREDIT | RVT_S_WAIT_DMA) 44 45 /* 46 * Send if not busy or waiting for I/O and either 47 * a RC response is pending or we can process send work requests. 48 */ 49 static inline int hfi1_send_ok(struct rvt_qp *qp) 50 { 51 struct hfi1_qp_priv *priv = qp->priv; 52 53 return !(qp->s_flags & (RVT_S_BUSY | HFI1_S_ANY_WAIT_IO)) && 54 (verbs_txreq_queued(iowait_get_ib_work(&priv->s_iowait)) || 55 (qp->s_flags & RVT_S_RESP_PENDING) || 56 !(qp->s_flags & RVT_S_ANY_WAIT_SEND)); 57 } 58 59 /* 60 * free_ahg - clear ahg from QP 61 */ 62 static inline void clear_ahg(struct rvt_qp *qp) 63 { 64 struct hfi1_qp_priv *priv = qp->priv; 65 66 priv->s_ahg->ahgcount = 0; 67 qp->s_flags &= ~(HFI1_S_AHG_VALID | HFI1_S_AHG_CLEAR); 68 if (priv->s_sde && qp->s_ahgidx >= 0) 69 sdma_ahg_free(priv->s_sde, qp->s_ahgidx); 70 qp->s_ahgidx = -1; 71 } 72 73 /** 74 * hfi1_qp_wakeup - wake up on the indicated event 75 * @qp: the QP 76 * @flag: flag the qp on which the qp is stalled 77 */ 78 void hfi1_qp_wakeup(struct rvt_qp *qp, u32 flag); 79 80 struct sdma_engine *qp_to_sdma_engine(struct rvt_qp *qp, u8 sc5); 81 struct send_context *qp_to_send_context(struct rvt_qp *qp, u8 sc5); 82 83 void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter); 84 85 bool _hfi1_schedule_send(struct rvt_qp *qp); 86 bool hfi1_schedule_send(struct rvt_qp *qp); 87 88 void hfi1_migrate_qp(struct rvt_qp *qp); 89 90 /* 91 * Functions provided by hfi1 driver for rdmavt to use 92 */ 93 void *qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp); 94 void qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp); 95 unsigned free_all_qps(struct rvt_dev_info *rdi); 96 void notify_qp_reset(struct rvt_qp *qp); 97 int get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp, 98 struct ib_qp_attr *attr); 99 void flush_qp_waiters(struct rvt_qp *qp); 100 void notify_error_qp(struct rvt_qp *qp); 101 void stop_send_queue(struct rvt_qp *qp); 102 void quiesce_qp(struct rvt_qp *qp); 103 u32 mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu); 104 int mtu_to_path_mtu(u32 mtu); 105 void hfi1_error_port_qps(struct hfi1_ibport *ibp, u8 sl); 106 void hfi1_qp_unbusy(struct rvt_qp *qp, struct iowait_work *wait); 107 #endif /* _QP_H */ 108