RDMA/efa: Add the efa.h header file

Add EFA driver generic header file defining driver's device independent
internal data structures and definitions.

Signed-off-by: Gal Pressman <galpress@amazon.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/efa/efa.h b/drivers/infiniband/hw/efa/efa.h
new file mode 100644 (file)
index 0000000..9e3cc32
--- /dev/null
+++ b/drivers/infiniband/hw/efa/efa.h
@@ -0,0 +1,163 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+/*
+ * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
+ */
+
+#ifndef _EFA_H_
+#define _EFA_H_
+
+#include <linux/bitops.h>
+#include <linux/idr.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/sched.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
+
+/* 1 for AENQ + ADMIN */
+#define EFA_NUM_MSIX_VEC                  1
+#define EFA_MGMNT_MSIX_VEC_IDX            0
+
+struct efa_irq {
+       irq_handler_t handler;
+       void *data;
+       int cpu;
+       u32 vector;
+       cpumask_t affinity_hint_mask;
+       char name[EFA_IRQNAME_SIZE];
+};
+
+struct efa_sw_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;
+};
+
+/* Don't use anything other than atomic64 */
+struct efa_stats {
+       struct efa_sw_stats sw_stats;
+       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;
+       u8 addr[EFA_GID_SIZE];
+       u32 mtu;
+
+       int admin_msix_vector_idx;
+       struct efa_irq admin_irq;
+
+       struct efa_stats stats;
+};
+
+struct efa_ucontext {
+       struct ib_ucontext ibucontext;
+       struct xarray mmap_xa;
+       u32 mmap_xa_page;
+       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;
+       size_t size;
+       u16 cq_idx;
+};
+
+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;
+       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];
+};
+
+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, u8 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, u8 port, int index,
+                 union ib_gid *gid);
+int efa_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
+                  u16 *pkey);
+int efa_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
+void efa_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
+int efa_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
+struct ib_qp *efa_create_qp(struct ib_pd *ibpd,
+                           struct ib_qp_init_attr *init_attr,
+                           struct ib_udata *udata);
+int efa_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata);
+struct ib_cq *efa_create_cq(struct ib_device *ibdev,
+                           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);
+int efa_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
+int efa_get_port_immutable(struct ib_device *ibdev, u8 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);
+int efa_create_ah(struct ib_ah *ibah,
+                 struct rdma_ah_attr *ah_attr,
+                 u32 flags,
+                 struct ib_udata *udata);
+void 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,
+                                        u8 port_num);
+
+#endif /* _EFA_H_ */