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