From patchwork Mon Jan 17 08:48:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cheng Xu X-Patchwork-Id: 12715010 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 813CCC433EF for ; Mon, 17 Jan 2022 08:48:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230303AbiAQIsi (ORCPT ); Mon, 17 Jan 2022 03:48:38 -0500 Received: from out30-130.freemail.mail.aliyun.com ([115.124.30.130]:40848 "EHLO out30-130.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229982AbiAQIsi (ORCPT ); Mon, 17 Jan 2022 03:48:38 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R931e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04423;MF=chengyou@linux.alibaba.com;NM=1;PH=DS;RN=7;SR=0;TI=SMTPD_---0V21zh6l_1642409315; Received: from localhost(mailfrom:chengyou@linux.alibaba.com fp:SMTPD_---0V21zh6l_1642409315) by smtp.aliyun-inc.com(127.0.0.1); Mon, 17 Jan 2022 16:48:36 +0800 From: Cheng Xu To: jgg@ziepe.ca, dledford@redhat.com Cc: leon@kernel.org, linux-rdma@vger.kernel.org, KaiShen@linux.alibaba.com, chengyou@linux.alibaba.com, tonylu@linux.alibaba.com Subject: [PATCH rdma-next v2 06/11] RDMA/erdma: Add verbs header file Date: Mon, 17 Jan 2022 16:48:23 +0800 Message-Id: <20220117084828.80638-7-chengyou@linux.alibaba.com> X-Mailer: git-send-email 2.32.0 (Apple Git-132) In-Reply-To: <20220117084828.80638-1-chengyou@linux.alibaba.com> References: <20220117084828.80638-1-chengyou@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org This header file defines the main structrues and functions used for RDMA Verbs, including qp, cq, mr ucontext, etc,. Signed-off-by: Cheng Xu --- drivers/infiniband/hw/erdma/erdma_verbs.h | 339 ++++++++++++++++++++++ 1 file changed, 339 insertions(+) create mode 100644 drivers/infiniband/hw/erdma/erdma_verbs.h diff --git a/drivers/infiniband/hw/erdma/erdma_verbs.h b/drivers/infiniband/hw/erdma/erdma_verbs.h new file mode 100644 index 000000000000..cfaee0143369 --- /dev/null +++ b/drivers/infiniband/hw/erdma/erdma_verbs.h @@ -0,0 +1,339 @@ +/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */ + +/* Authors: Cheng Xu */ +/* Kai Shen */ +/* Copyright (c) 2020-2022, Alibaba Group. */ + +#ifndef __ERDMA_VERBS_H__ +#define __ERDMA_VERBS_H__ + +#include + +#include +#include +#include + +#include "erdma.h" +#include "erdma_cm.h" +#include "erdma_hw.h" + +/* RDMA Capbility. */ +#define ERDMA_MAX_PD (128 * 1024) +#define ERDMA_MAX_SEND_WR 4096 +#define ERDMA_MAX_ORD 128 +#define ERDMA_MAX_IRD 128 +#define ERDMA_MAX_SGE_RD 1 +#define ERDMA_MAX_FMR 0 +#define ERDMA_MAX_SRQ 0 /* not support srq now. */ +#define ERDMA_MAX_SRQ_WR 0 /* not support srq now. */ +#define ERDMA_MAX_SRQ_SGE 0 /* not support srq now. */ +#define ERDMA_MAX_CONTEXT (128 * 1024) +#define ERDMA_MAX_SEND_SGE 6 +#define ERDMA_MAX_RECV_SGE 1 +#define ERDMA_MAX_INLINE (sizeof(struct erdma_sge) * (ERDMA_MAX_SEND_SGE)) +#define ERDMA_MAX_FRMR_PA 512 + +enum { + ERDMA_MMAP_IO_NC = 0, /* no cache */ +}; + +struct erdma_user_mmap_entry { + struct rdma_user_mmap_entry rdma_entry; + u64 address; + u8 mmap_flag; +}; + +struct erdma_ucontext { + struct ib_ucontext ibucontext; + struct erdma_dev *dev; + + u32 sdb_type; + u32 sdb_idx; + u32 sdb_page_idx; + u32 sdb_page_off; + u64 sdb; + u64 rdb; + u64 cdb; + + struct rdma_user_mmap_entry *sq_db_mmap_entry; + struct rdma_user_mmap_entry *rq_db_mmap_entry; + struct rdma_user_mmap_entry *cq_db_mmap_entry; + + /* doorbell records */ + struct list_head dbrecords_page_list; + struct mutex dbrecords_page_mutex; +}; + +struct erdma_pd { + struct ib_pd ibpd; + u32 pdn; +}; + +/* + * MemoryRegion definition. + */ +#define ERDMA_MAX_INLINE_MTT_ENTRIES 4 +#define MTT_SIZE(x) (x << 3) /* per mtt takes 8 Bytes. */ +#define ERDMA_MR_MAX_MTT_CNT 524288 +#define ERDMA_MTT_ENTRY_SIZE 8 + +#define ERDMA_MR_TYPE_NORMAL 0 +#define ERDMA_MR_TYPE_FRMR 1 +#define ERDMA_MR_TYPE_DMA 2 + +#define ERDMA_MR_INLINE_MTT 0 +#define ERDMA_MR_INDIRECT_MTT 1 + +#define ERDMA_MR_ACC_LR BIT(0) +#define ERDMA_MR_ACC_LW BIT(1) +#define ERDMA_MR_ACC_RR BIT(2) +#define ERDMA_MR_ACC_RW BIT(3) + +struct erdma_mem { + struct ib_umem *umem; + void *mtt_buf; + u32 mtt_type; + u32 page_size; + u32 page_offset; + u32 page_cnt; + u32 mtt_nents; + + u64 va; + u64 len; + + u64 mtt_entry[ERDMA_MAX_INLINE_MTT_ENTRIES]; +}; + +struct erdma_mr { + struct ib_mr ibmr; + struct erdma_mem mem; + u8 type; + u8 access; + u8 valid; +}; + +struct erdma_user_dbrecords_page { + struct list_head list; + struct ib_umem *umem; + u64 va; + int refcnt; +}; + +struct erdma_uqp { + struct erdma_mem sq_mtt; + struct erdma_mem rq_mtt; + + dma_addr_t sq_db_info_dma_addr; + dma_addr_t rq_db_info_dma_addr; + + struct erdma_user_dbrecords_page *user_dbr_page; + + u32 rq_offset; +}; +struct erdma_kqp { + u16 sq_pi; + u16 sq_ci; + + u16 rq_pi; + u16 rq_ci; + + u64 *swr_tbl; + u64 *rwr_tbl; + + void *hw_sq_db; + void *hw_rq_db; + + void *sq_buf; + dma_addr_t sq_buf_dma_addr; + + void *rq_buf; + dma_addr_t rq_buf_dma_addr; + + void *sq_db_info; + void *rq_db_info; + + u8 sig_all; +}; + +enum erdma_qp_state { + ERDMA_QP_STATE_IDLE = 0, + ERDMA_QP_STATE_RTR = 1, + ERDMA_QP_STATE_RTS = 2, + ERDMA_QP_STATE_CLOSING = 3, + ERDMA_QP_STATE_TERMINATE = 4, + ERDMA_QP_STATE_ERROR = 5, + ERDMA_QP_STATE_UNDEF = 7, + ERDMA_QP_STATE_COUNT = 8 +}; + +enum erdma_qp_attr_mask { + ERDMA_QP_ATTR_STATE = (1 << 0), + ERDMA_QP_ATTR_LLP_HANDLE = (1 << 2), + ERDMA_QP_ATTR_ORD = (1 << 3), + ERDMA_QP_ATTR_IRD = (1 << 4), + ERDMA_QP_ATTR_SQ_SIZE = (1 << 5), + ERDMA_QP_ATTR_RQ_SIZE = (1 << 6), + ERDMA_QP_ATTR_MPA = (1 << 7) +}; + +struct erdma_qp_attrs { + enum erdma_qp_state state; + u32 sq_size; + u32 rq_size; + u32 orq_size; + u32 irq_size; + u32 max_send_sge; + u32 max_recv_sge; +}; + +struct erdma_qp { + struct ib_qp ibqp; + struct kref ref; + struct completion safe_free; + struct erdma_dev *dev; + struct erdma_cep *cep; + struct rw_semaphore state_lock; + bool is_kernel_qp; + + union { + struct erdma_kqp kern_qp; + struct erdma_uqp user_qp; + }; + + struct erdma_cq *scq; + struct erdma_cq *rcq; + + struct erdma_qp_attrs attrs; + spinlock_t lock; + + u8 cc_method; +#define ERDMA_QP_ACTIVE 0 +#define ERDMA_QP_PASSIVE 1 + u8 qp_type; + u8 private_data_len; +}; + +struct erdma_kcq_info { + struct erdma_cqe *qbuf; + dma_addr_t qbuf_dma_addr; + u32 ci; + u32 owner; + u32 cmdsn; + void *db; + spinlock_t lock; + void *db_info; +}; + +struct erdma_ucq_info { + struct erdma_mem qbuf_mtt; + struct erdma_user_dbrecords_page *user_dbr_page; + dma_addr_t db_info_dma_addr; +}; + +struct erdma_cq { + struct ib_cq ibcq; + u32 cqn; + + u32 depth; + u32 assoc_eqn; + u32 is_kernel_cq; + + union { + struct erdma_kcq_info kern_cq; + struct erdma_ucq_info user_cq; + }; +}; + +#define QP_ID(qp) ((qp)->ibqp.qp_num) + +static inline struct erdma_qp *find_qp_by_qpn(struct erdma_dev *dev, int id) +{ + return (struct erdma_qp *)xa_load(&dev->qp_xa, id); +} + +static inline struct erdma_cq *find_cq_by_cqn(struct erdma_dev *dev, int id) +{ + return (struct erdma_cq *)xa_load(&dev->cq_xa, id); +} + +void erdma_qp_get(struct erdma_qp *qp); +void erdma_qp_put(struct erdma_qp *qp); +int erdma_modify_qp_internal(struct erdma_qp *qp, struct erdma_qp_attrs *attrs, + enum erdma_qp_attr_mask mask); +void erdma_qp_llp_close(struct erdma_qp *qp); +void erdma_qp_cm_drop(struct erdma_qp *qp); + +static inline struct erdma_ucontext *to_ectx(struct ib_ucontext *ibctx) +{ + return container_of(ibctx, struct erdma_ucontext, ibucontext); +} + +static inline struct erdma_pd *to_epd(struct ib_pd *pd) +{ + return container_of(pd, struct erdma_pd, ibpd); +} + +static inline struct erdma_mr *to_emr(struct ib_mr *ibmr) +{ + return container_of(ibmr, struct erdma_mr, ibmr); +} + +static inline struct erdma_qp *to_eqp(struct ib_qp *qp) +{ + return container_of(qp, struct erdma_qp, ibqp); +} + +static inline struct erdma_cq *to_ecq(struct ib_cq *ibcq) +{ + return container_of(ibcq, struct erdma_cq, ibcq); +} + +static inline struct erdma_user_mmap_entry *to_emmap(struct rdma_user_mmap_entry *ibmmap) +{ + return container_of(ibmmap, struct erdma_user_mmap_entry, rdma_entry); +} + +static inline void *get_sq_entry(struct erdma_qp *qp, u16 idx) +{ + idx &= (qp->attrs.sq_size - 1); + return qp->kern_qp.sq_buf + (idx << SQEBB_SHIFT); +} + +int erdma_alloc_ucontext(struct ib_ucontext *ctx, struct ib_udata *data); +void erdma_dealloc_ucontext(struct ib_ucontext *ctx); +int erdma_query_device(struct ib_device *dev, struct ib_device_attr *attr, struct ib_udata *data); +int erdma_get_port_immutable(struct ib_device *dev, u32 port, + struct ib_port_immutable *ib_port_immutable); +int erdma_create_cq(struct ib_cq *cq, const struct ib_cq_init_attr *attr, struct ib_udata *data); +int erdma_query_port(struct ib_device *dev, u32 port, struct ib_port_attr *attr); +int erdma_query_gid(struct ib_device *dev, u32 port, int idx, union ib_gid *gid); +int erdma_alloc_pd(struct ib_pd *pd, struct ib_udata *data); +int erdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); +int erdma_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attr, struct ib_udata *data); +int erdma_query_qp(struct ib_qp *qp, struct ib_qp_attr *attr, int mask, + struct ib_qp_init_attr *init_attr); +int erdma_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr, int mask, struct ib_udata *data); +int erdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata); +int erdma_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); +int erdma_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags); +struct ib_mr *erdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len, u64 virt, int access, + struct ib_udata *udata); +struct ib_mr *erdma_get_dma_mr(struct ib_pd *ibpd, int rights); +int erdma_dereg_mr(struct ib_mr *mr, struct ib_udata *data); +int erdma_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma); +void erdma_qp_get_ref(struct ib_qp *qp); +void erdma_qp_put_ref(struct ib_qp *qp); +struct ib_qp *erdma_get_ibqp(struct ib_device *dev, int id); +int erdma_post_send(struct ib_qp *qp, const struct ib_send_wr *send_wr, + const struct ib_send_wr **bad_send_wr); +int erdma_post_recv(struct ib_qp *qp, const struct ib_recv_wr *recv_wr, + const struct ib_recv_wr **bad_recv_wr); +int erdma_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc); +struct ib_mr *erdma_ib_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type, u32 max_num_sg); +int erdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, + unsigned int *sg_offset); +struct net_device *erdma_get_netdev(struct ib_device *device, u32 port_num); +void erdma_disassociate_ucontext(struct ib_ucontext *ibcontext); +void erdma_port_event(struct erdma_dev *dev, enum ib_event_type reason); + +#endif