linux/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Huawei HiNIC PCI Express Linux driver
 * Copyright(c) 2017 Huawei Technologies Co., Ltd
 */

#ifndef HINIC_HW_WQ_H
#define HINIC_HW_WQ_H

#include <linux/types.h>
#include <linux/semaphore.h>
#include <linux/atomic.h>

#include "hinic_hw_if.h"
#include "hinic_hw_wqe.h"

struct hinic_free_block { … };

struct hinic_wq { … };

struct hinic_wqs { … };

struct hinic_cmdq_pages { … };

int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages,
			 struct hinic_wq *wq, struct hinic_hwif *hwif,
			 int cmdq_blocks, u16 wqebb_size, u32 wq_page_size,
			 u16 q_depth, u16 max_wqe_size);

void hinic_wqs_cmdq_free(struct hinic_cmdq_pages *cmdq_pages,
			 struct hinic_wq *wq, int cmdq_blocks);

int hinic_wqs_alloc(struct hinic_wqs *wqs, int num_wqs,
		    struct hinic_hwif *hwif);

void hinic_wqs_free(struct hinic_wqs *wqs);

int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,
		      u16 wqebb_size, u32 wq_page_size, u16 q_depth,
		      u16 max_wqe_size);

void hinic_wq_free(struct hinic_wqs *wqs, struct hinic_wq *wq);

struct hinic_hw_wqe *hinic_get_wqe(struct hinic_wq *wq, unsigned int wqe_size,
				   u16 *prod_idx);

void hinic_return_wqe(struct hinic_wq *wq, unsigned int wqe_size);

void hinic_put_wqe(struct hinic_wq *wq, unsigned int wqe_size);

struct hinic_hw_wqe *hinic_read_wqe(struct hinic_wq *wq, unsigned int wqe_size,
				    u16 *cons_idx);

struct hinic_hw_wqe *hinic_read_wqe_direct(struct hinic_wq *wq, u16 cons_idx);

void hinic_write_wqe(struct hinic_wq *wq, struct hinic_hw_wqe *wqe,
		     unsigned int wqe_size);

#endif