// SPDX-License-Identifier: GPL-2.0-only /* * Huawei HiNIC PCI Express Linux driver * Copyright(c) 2017 Huawei Technologies Co., Ltd */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/semaphore.h> #include <linux/dma-mapping.h> #include <linux/io.h> #include <linux/err.h> #include "hinic_hw_dev.h" #include "hinic_hw_if.h" #include "hinic_hw_eqs.h" #include "hinic_hw_wqe.h" #include "hinic_hw_wq.h" #include "hinic_hw_cmdq.h" #include "hinic_hw_qp_ctxt.h" #include "hinic_hw_qp.h" #include "hinic_hw_io.h" #define CI_Q_ADDR_SIZE … #define CI_ADDR(base_addr, q_id) … #define CI_TABLE_SIZE(num_qps) … #define DB_IDX(db, db_base) … #define HINIC_PAGE_SIZE_HW(pg_size) … enum io_cmd { … }; static void init_db_area_idx(struct hinic_free_db_area *free_db_area) { … } static void __iomem *get_db_area(struct hinic_func_to_io *func_to_io) { … } static void return_db_area(struct hinic_func_to_io *func_to_io, void __iomem *db_base) { … } static int write_sq_ctxts(struct hinic_func_to_io *func_to_io, u16 base_qpn, u16 num_sqs) { … } static int write_rq_ctxts(struct hinic_func_to_io *func_to_io, u16 base_qpn, u16 num_rqs) { … } /** * write_qp_ctxts - write the qp ctxt to HW * @func_to_io: func to io channel that holds the IO components * @base_qpn: first qp number * @num_qps: number of qps to write * * Return 0 - Success, negative - Failure **/ static int write_qp_ctxts(struct hinic_func_to_io *func_to_io, u16 base_qpn, u16 num_qps) { … } static int hinic_clean_queue_offload_ctxt(struct hinic_func_to_io *func_to_io, enum hinic_qp_ctxt_type ctxt_type) { … } static int hinic_clean_qp_offload_ctxt(struct hinic_func_to_io *func_to_io) { … } /** * init_qp - Initialize a Queue Pair * @func_to_io: func to io channel that holds the IO components * @qp: pointer to the qp to initialize * @q_id: the id of the qp * @sq_msix_entry: msix entry for sq * @rq_msix_entry: msix entry for rq * * Return 0 - Success, negative - Failure **/ static int init_qp(struct hinic_func_to_io *func_to_io, struct hinic_qp *qp, int q_id, struct msix_entry *sq_msix_entry, struct msix_entry *rq_msix_entry) { … } /** * destroy_qp - Clean the resources of a Queue Pair * @func_to_io: func to io channel that holds the IO components * @qp: pointer to the qp to clean **/ static void destroy_qp(struct hinic_func_to_io *func_to_io, struct hinic_qp *qp) { … } /** * hinic_io_create_qps - Create Queue Pairs * @func_to_io: func to io channel that holds the IO components * @base_qpn: base qp number * @num_qps: number queue pairs to create * @sq_msix_entries: msix entries for sq * @rq_msix_entries: msix entries for rq * * Return 0 - Success, negative - Failure **/ int hinic_io_create_qps(struct hinic_func_to_io *func_to_io, u16 base_qpn, int num_qps, struct msix_entry *sq_msix_entries, struct msix_entry *rq_msix_entries) { … } /** * hinic_io_destroy_qps - Destroy the IO Queue Pairs * @func_to_io: func to io channel that holds the IO components * @num_qps: number queue pairs to destroy **/ void hinic_io_destroy_qps(struct hinic_func_to_io *func_to_io, int num_qps) { … } int hinic_set_wq_page_size(struct hinic_hwdev *hwdev, u16 func_idx, u32 page_size) { … } /** * hinic_io_init - Initialize the IO components * @func_to_io: func to io channel that holds the IO components * @hwif: HW interface for accessing IO * @max_qps: maximum QPs in HW * @num_ceqs: number completion event queues * @ceq_msix_entries: msix entries for ceqs * * Return 0 - Success, negative - Failure **/ int hinic_io_init(struct hinic_func_to_io *func_to_io, struct hinic_hwif *hwif, u16 max_qps, int num_ceqs, struct msix_entry *ceq_msix_entries) { … } /** * hinic_io_free - Free the IO components * @func_to_io: func to io channel that holds the IO components **/ void hinic_io_free(struct hinic_func_to_io *func_to_io) { … }
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