drivers/infiniband/hw/hns/hns_roce_hw_v2.c

File Facts

System

Linux kernel

Corpus path

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

Extension

.c

Size

212862 bytes

Lines

7670

Domain

Driver Families

Bucket

drivers/infiniband

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/acpi.h
• linux/cleanup.h
• linux/etherdevice.h
• linux/interrupt.h
• linux/iopoll.h
• linux/kernel.h
• linux/types.h
• linux/workqueue.h
• net/addrconf.h
• rdma/ib_addr.h
• rdma/ib_cache.h
• rdma/ib_umem.h
• rdma/uverbs_ioctl.h
• hclge_main.h
• hns_roce_common.h
• hns_roce_device.h
• hns_roce_cmd.h
• hns_roce_hem.h
• hns_roce_hw_v2.h
• hns_roce_bond.h
• hns_roce_trace.h

Detected Declarations

• struct hns_roce_drain_cqe
• enum ecc_resource_type
• function set_data_seg_v2
• function to_hr_opcode
• function set_frmr_seg
• function set_atomic_seg
• function fill_ext_sge_inl_data
• function set_extend_sge
• function check_inl_data_len
• function set_rc_inl
• function set_rwqe_data_seg
• function check_send_valid
• function calc_wr_sge_num
• function get_immtdata
• function set_ud_opcode
• function fill_ud_av
• function set_ud_wqe
• function set_rc_opcode
• function set_rc_wqe
• function update_sq_db
• function update_rq_db
• function hns_roce_write512
• function write_dwqe
• function hns_roce_v2_post_send
• function check_recv_valid
• function fill_recv_sge_to_wqe
• function fill_rq_wqe
• function hns_roce_v2_post_recv
• function hns_roce_push_drain_wr
• function hns_roce_drain_qp_done
• function handle_drain_completion
• function hns_roce_handle_device_err
• function hns_roce_v2_drain_rq
• function hns_roce_v2_drain_sq
• function hns_roce_free_srq_wqe
• function hns_roce_srqwq_overflow
• function check_post_srq_valid
• function get_srq_wqe_idx
• function fill_wqe_idx
• function update_srq_db
• function hns_roce_v2_post_srq_recv
• function hns_roce_v2_cmd_hw_reseted
• function hns_roce_v2_cmd_hw_resetting
• function hns_roce_v2_cmd_sw_resetting
• function check_aedev_reset_status
• function check_device_is_in_reset
• function v2_chk_mbox_is_avail
• function hns_roce_alloc_cmq_desc

Annotated Snippet

module_init(hns_roce_hw_v2_init);
module_exit(hns_roce_hw_v2_exit);

MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Wei Hu <xavier.huwei@huawei.com>");
MODULE_AUTHOR("Lijun Ou <oulijun@huawei.com>");
MODULE_AUTHOR("Shaobo Xu <xushaobo2@huawei.com>");
MODULE_DESCRIPTION("Hisilicon Hip08 Family RoCE Driver");

Annotation

• Immediate include surface: `linux/acpi.h`, `linux/cleanup.h`, `linux/etherdevice.h`, `linux/interrupt.h`, `linux/iopoll.h`, `linux/kernel.h`, `linux/types.h`, `linux/workqueue.h`.
• Detected declarations: `struct hns_roce_drain_cqe`, `enum ecc_resource_type`, `function set_data_seg_v2`, `function to_hr_opcode`, `function set_frmr_seg`, `function set_atomic_seg`, `function fill_ext_sge_inl_data`, `function set_extend_sge`, `function check_inl_data_len`, `function set_rc_inl`.
• Atlas domain: Driver Families / drivers/infiniband.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.