68 строки
1.7 KiB
C
68 строки
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
|
|
/*
|
|
* Copyright(c) 2016 - 2018 Intel Corporation.
|
|
*/
|
|
|
|
#ifndef DEF_RDMAVT_INCCQ_H
|
|
#define DEF_RDMAVT_INCCQ_H
|
|
|
|
#include <linux/kthread.h>
|
|
#include <rdma/ib_user_verbs.h>
|
|
#include <rdma/ib_verbs.h>
|
|
|
|
/*
|
|
* Define an ib_cq_notify value that is not valid so we know when CQ
|
|
* notifications are armed.
|
|
*/
|
|
#define RVT_CQ_NONE (IB_CQ_NEXT_COMP + 1)
|
|
|
|
/*
|
|
* Define read macro that apply smp_load_acquire memory barrier
|
|
* when reading indice of circular buffer that mmaped to user space.
|
|
*/
|
|
#define RDMA_READ_UAPI_ATOMIC(member) smp_load_acquire(&(member).val)
|
|
|
|
/*
|
|
* Define write macro that uses smp_store_release memory barrier
|
|
* when writing indice of circular buffer that mmaped to user space.
|
|
*/
|
|
#define RDMA_WRITE_UAPI_ATOMIC(member, x) smp_store_release(&(member).val, x)
|
|
#include <rdma/rvt-abi.h>
|
|
|
|
/*
|
|
* This structure is used to contain the head pointer, tail pointer,
|
|
* and completion queue entries as a single memory allocation so
|
|
* it can be mmap'ed into user space.
|
|
*/
|
|
struct rvt_k_cq_wc {
|
|
u32 head; /* index of next entry to fill */
|
|
u32 tail; /* index of next ib_poll_cq() entry */
|
|
struct ib_wc kqueue[];
|
|
};
|
|
|
|
/*
|
|
* The completion queue structure.
|
|
*/
|
|
struct rvt_cq {
|
|
struct ib_cq ibcq;
|
|
struct work_struct comptask;
|
|
spinlock_t lock; /* protect changes in this struct */
|
|
u8 notify;
|
|
u8 triggered;
|
|
u8 cq_full;
|
|
int comp_vector_cpu;
|
|
struct rvt_dev_info *rdi;
|
|
struct rvt_cq_wc *queue;
|
|
struct rvt_mmap_info *ip;
|
|
struct rvt_k_cq_wc *kqueue;
|
|
};
|
|
|
|
static inline struct rvt_cq *ibcq_to_rvtcq(struct ib_cq *ibcq)
|
|
{
|
|
return container_of(ibcq, struct rvt_cq, ibcq);
|
|
}
|
|
|
|
bool rvt_cq_enter(struct rvt_cq *cq, struct ib_wc *entry, bool solicited);
|
|
|
|
#endif /* DEF_RDMAVT_INCCQH */
|