Add EFA driver generic header file defining driver's device independent
internal data structures, including the bitmaps and other management helper
function.
Signed-off-by: Gal Pressman <galpress@xxxxxxxxxx>
---
drivers/infiniband/hw/efa/efa.h | 191 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 191 insertions(+)
create mode 100644 drivers/infiniband/hw/efa/efa.h
diff --git a/drivers/infiniband/hw/efa/efa.h b/drivers/infiniband/hw/efa/efa.h
new file mode 100644
index 000000000000..9cc763923884
--- /dev/null
+++ b/drivers/infiniband/hw/efa/efa.h
@@ -0,0 +1,191 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+/*
+ * Copyright 2018 Amazon.com, Inc. or its affiliates.
+ */
+
+#ifndef _EFA_H_
+#define _EFA_H_
+
+#include <linux/bitops.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+
+#include <rdma/ib_verbs.h>
+
+#include "efa_com_cmd.h"
+
+#define DRV_MODULE_NAME "efa"
+#define DEVICE_NAME "Elastic Fabric Adapter (EFA)"
+
+#ifdef pr_fmt
+#undef pr_fmt
+#endif
+#define pr_fmt(fmt) DRV_MODULE_NAME ": %s: " fmt, __func__
+
+#define EFA_IRQNAME_SIZE 40
+
+/* 1 for AENQ + ADMIN */
+#define EFA_NUM_MSIX_VEC 1
+#define EFA_MGMNT_MSIX_VEC_IDX 0
+
+#define EFA_BITMAP_INVAL U32_MAX
+
+enum {
+ EFA_DEVICE_RUNNING_BIT,
+ EFA_MSIX_ENABLED_BIT
+};
+
+struct efa_caps {
+ u32 max_sq;
+ u32 max_sq_depth; /* wqes */
+ u32 max_rq;
+ u32 max_rq_depth; /* wqes */
+ u32 max_cq;
+ u32 max_cq_depth; /* cqes */
+ u32 inline_buf_size;
+ u32 max_sq_sge;
+ u32 max_rq_sge;
+ u32 max_mr;
+ u64 max_mr_pages;
+ u64 page_size_cap; /* bytes */
+ u32 max_pd;
+ u32 max_ah;
+ u16 sub_cqs_per_cq;
+ u16 max_inline_data; /* bytes */
+};
+
+struct efa_bitmap {
+ u32 last;
+ u32 max;
+ u32 mask;
+ u32 avail;
+ /* Protects bitmap */
+ spinlock_t lock;
+ unsigned long *table;
+};
+
+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 {
+ u64 alloc_pd_alloc_err;
+ u64 alloc_pd_bitmap_full_err;
+ u64 mmap_entry_alloc_err;
+ u64 create_qp_alloc_err;
+ u64 create_cq_alloc_err;
+ u64 reg_mr_alloc_err;
+ u64 alloc_ucontext_alloc_err;
+ u64 create_ah_alloc_err;
+};
+
+struct efa_stats {
+ struct efa_sw_stats sw_stats;
+ u64 keep_alive_rcvd;
+};
+
+struct efa_dev {
+ struct ib_device ibdev;
+ struct pci_dev *pdev;
+ struct efa_com_dev *edev;
+ struct efa_caps caps;
+
+ 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;
+ u8 db_bar_idx;
+
+ int admin_msix_vector_idx;
+ unsigned long state;
+ struct efa_irq admin_irq;
+
+ struct list_head ctx_list;
+
+ /* Protects efa_dev state */
+ struct mutex efa_dev_lock;
+
+ struct list_head efa_ah_list;
+ /* Protects efa_ah_list */
+ struct mutex ah_list_lock;
+ struct efa_bitmap pd_bitmap;
+
+ struct efa_stats stats;
+};
+
+u32 efa_bitmap_alloc(struct efa_bitmap *bitmap);
+void efa_bitmap_free(struct efa_bitmap *bitmap, u32 obj);
+int efa_bitmap_init(struct efa_bitmap *bitmap, u32 num);
+void efa_bitmap_cleanup(struct efa_bitmap *bitmap);
+u32 efa_bitmap_avail(struct efa_bitmap *bitmap);
+
+int efa_get_device_attributes(struct efa_dev *dev,
+ struct efa_com_get_device_attr_result *result);
+
+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);
+struct ib_pd *efa_alloc_pd(struct ib_device *ibdev,
+ struct ib_ucontext *ibucontext,
+ struct ib_udata *udata);
+int efa_dealloc_pd(struct ib_pd *ibpd);
+int efa_destroy_qp_handle(struct efa_dev *dev, u32 qp_handle);
+int efa_destroy_qp(struct ib_qp *ibqp);
+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_cq *efa_create_cq(struct ib_device *ibdev,
+ const struct ib_cq_init_attr *attr,
+ struct ib_ucontext *ibucontext,
+ 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);
+int efa_get_port_immutable(struct ib_device *ibdev, u8 port_num,
+ struct ib_port_immutable *immutable);
+struct ib_ucontext *efa_alloc_ucontext(struct ib_device *ibdev,
+ struct ib_udata *udata);
+int efa_dealloc_ucontext(struct ib_ucontext *ibucontext);
+int efa_mmap(struct ib_ucontext *ibucontext,
+ struct vm_area_struct *vma);
+struct ib_ah *efa_create_ah(struct ib_pd *ibpd,
+ struct rdma_ah_attr *ah_attr,
+ struct ib_udata *udata);
+int efa_destroy_ah(struct ib_ah *ibah);
+int efa_post_send(struct ib_qp *ibqp,
+ const struct ib_send_wr *wr,
+ const struct ib_send_wr **bad_wr);
+int efa_post_recv(struct ib_qp *ibqp,
+ const struct ib_recv_wr *wr,
+ const struct ib_recv_wr **bad_wr);
+int efa_poll_cq(struct ib_cq *ibcq, int num_entries,
+ struct ib_wc *wc);
+int efa_req_notify_cq(struct ib_cq *ibcq,
+ enum ib_cq_notify_flags flags);
+struct ib_mr *efa_get_dma_mr(struct ib_pd *ibpd, int acc);
+int efa_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata);
+enum rdma_link_layer efa_port_link_layer(struct ib_device *ibdev,
+ u8 port_num);
+
+#endif /* _EFA_H_ */
--
2.7.4
