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/*
* Huawei HiNIC PCI Express Linux driver
* Copyright(c) 2017 Huawei Technologies Co., Ltd
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
*/
#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 {
int page_idx;
int block_idx;
};
struct hinic_wq {
struct hinic_hwif *hwif;
int page_idx;
int block_idx;
u16 wqebb_size;
u16 wq_page_size;
u16 q_depth;
u16 max_wqe_size;
u16 num_wqebbs_per_page;
u16 wqebbs_per_page_shift;
u16 wqebb_size_shift;
/* The addresses are 64 bit in the HW */
u64 block_paddr;
void **shadow_block_vaddr;
u64 *block_vaddr;
int num_q_pages;
u8 *shadow_wqe;
u16 *shadow_idx;
atomic_t cons_idx;
atomic_t prod_idx;
atomic_t delta;
u16 mask;
};
struct hinic_wqs {
struct hinic_hwif *hwif;
int num_pages;
/* The addresses are 64 bit in the HW */
u64 *page_paddr;
u64 **page_vaddr;
void ***shadow_page_vaddr;
struct hinic_free_block *free_blocks;
int alloc_blk_pos;
int return_blk_pos;
int num_free_blks;
/* Lock for getting a free block from the WQ set */
struct semaphore alloc_blocks_lock;
};
struct hinic_cmdq_pages {
/* The addresses are 64 bit in the HW */
u64 page_paddr;
u64 *page_vaddr;
void **shadow_page_vaddr;
struct hinic_hwif *hwif;
};
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, u16 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, u16 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
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