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/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
/*
* Copyright 2018-2024 Amazon.com, Inc. or its affiliates. All rights reserved.
*/
#ifndef _EFA_H_
#define _EFA_H_
#include <linux/bitops.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <rdma/efa-abi.h>
#include <rdma/ib_verbs.h>
#include "efa_com_cmd.h"
#define DRV_MODULE_NAME "efa"
#define DEVICE_NAME "Elastic Fabric Adapter (EFA)"
#define EFA_IRQNAME_SIZE 40
#define EFA_MGMNT_MSIX_VEC_IDX 0
#define EFA_COMP_EQS_VEC_BASE 1
struct efa_irq {
irq_handler_t handler;
void *data;
u32 irqn;
u32 vector;
cpumask_t affinity_hint_mask;
char name[EFA_IRQNAME_SIZE];
};
/* Don't use anything other than atomic64 */
struct efa_stats {
atomic64_t alloc_pd_err;
atomic64_t create_qp_err;
atomic64_t create_cq_err;
atomic64_t reg_mr_err;
atomic64_t alloc_ucontext_err;
atomic64_t create_ah_err;
atomic64_t mmap_err;
atomic64_t keep_alive_rcvd;
};
struct efa_dev {
struct ib_device ibdev;
struct efa_com_dev edev;
struct pci_dev *pdev;
struct efa_com_get_device_attr_result dev_attr;
u64 reg_bar_addr;
u64 reg_bar_len;
u64 mem_bar_addr;
u64 mem_bar_len;
u64 db_bar_addr;
u64 db_bar_len;
int admin_msix_vector_idx;
struct efa_irq admin_irq;
struct efa_stats stats;
/* Array of completion EQs */
struct efa_eq *eqs;
unsigned int neqs;
/* Only stores CQs with interrupts enabled */
struct xarray cqs_xa;
};
struct efa_ucontext {
struct ib_ucontext ibucontext;
u16 uarn;
};
struct efa_pd {
struct ib_pd ibpd;
u16 pdn;
};
struct efa_mr_interconnect_info {
u16 recv_ic_id;
u16 rdma_read_ic_id;
u16 rdma_recv_ic_id;
u8 recv_ic_id_valid : 1;
u8 rdma_read_ic_id_valid : 1;
u8 rdma_recv_ic_id_valid : 1;
};
struct efa_mr {
struct ib_mr ibmr;
struct ib_umem *umem;
struct efa_mr_interconnect_info ic_info;
};
struct efa_cq {
struct ib_cq ibcq;
struct efa_ucontext *ucontext;
dma_addr_t dma_addr;
void *cpu_addr;
struct rdma_user_mmap_entry *mmap_entry;
struct rdma_user_mmap_entry *db_mmap_entry;
size_t size;
u16 cq_idx;
/* NULL when no interrupts requested */
struct efa_eq *eq;
};
struct efa_qp {
struct ib_qp ibqp;
dma_addr_t rq_dma_addr;
void *rq_cpu_addr;
size_t rq_size;
enum ib_qp_state state;
/* Used for saving mmap_xa entries */
struct rdma_user_mmap_entry *sq_db_mmap_entry;
struct rdma_user_mmap_entry *llq_desc_mmap_entry;
struct rdma_user_mmap_entry *rq_db_mmap_entry;
struct rdma_user_mmap_entry *rq_mmap_entry;
u32 qp_handle;
u32 max_send_wr;
u32 max_recv_wr;
u32 max_send_sge;
u32 max_recv_sge;
u32 max_inline_data;
};
struct efa_ah {
struct ib_ah ibah;
u16 ah;
/* dest_addr */
u8 id[EFA_GID_SIZE];
};
struct efa_eq {
struct efa_com_eq eeq;
struct efa_irq irq;
};
int efa_query_device(struct ib_device *ibdev,
struct ib_device_attr *props,
struct ib_udata *udata);
int efa_query_port(struct ib_device *ibdev, u32 port,
struct ib_port_attr *props);
int efa_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
int qp_attr_mask,
struct ib_qp_init_attr *qp_init_attr);
int efa_query_gid(struct ib_device *ibdev, u32 port, int index,
union ib_gid *gid);
int efa_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
u16 *pkey);
int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
int efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
int efa_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *init_attr,
struct ib_udata *udata);
int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata);
int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
struct ib_udata *udata);
struct ib_mr *efa_reg_mr(struct ib_pd *ibpd, u64 start, u64 length,
u64 virt_addr, int access_flags,
struct ib_udata *udata);
struct ib_mr *efa_reg_user_mr_dmabuf(struct ib_pd *ibpd, u64 start,
u64 length, u64 virt_addr,
int fd, int access_flags,
struct ib_udata *udata);
int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
int efa_get_port_immutable(struct ib_device *ibdev, u32 port_num,
struct ib_port_immutable *immutable);
int efa_alloc_ucontext(struct ib_ucontext *ibucontext, struct ib_udata *udata);
void efa_dealloc_ucontext(struct ib_ucontext *ibucontext);
int efa_mmap(struct ib_ucontext *ibucontext,
struct vm_area_struct *vma);
void efa_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
int efa_create_ah(struct ib_ah *ibah,
struct rdma_ah_init_attr *init_attr,
struct ib_udata *udata);
int efa_destroy_ah(struct ib_ah *ibah, u32 flags);
int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
int qp_attr_mask, struct ib_udata *udata);
enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev,
u32 port_num);
struct rdma_hw_stats *efa_alloc_hw_port_stats(struct ib_device *ibdev, u32 port_num);
struct rdma_hw_stats *efa_alloc_hw_device_stats(struct ib_device *ibdev);
int efa_get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats,
u32 port_num, int index);
#endif /* _EFA_H_ */
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