diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/hw/efa/efa.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/efa/efa.h b/drivers/infiniband/hw/efa/efa.h new file mode 100644 index 000000000..7352a1f5d --- /dev/null +++ b/drivers/infiniband/hw/efa/efa.h @@ -0,0 +1,182 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ +/* + * Copyright 2018-2021 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 { + struct ib_mr ibmr; + struct ib_umem *umem; +}; + +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_ */ |