/*
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* Huawei HiNIC PCI Express Linux driver
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* Copyright(c) 2017 Huawei Technologies Co., Ltd
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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*/
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#ifndef HINIC_HW_WQ_H
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#define HINIC_HW_WQ_H
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#include <linux/types.h>
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#include <linux/semaphore.h>
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#include <linux/atomic.h>
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#include "hinic_hw_if.h"
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#include "hinic_hw_wqe.h"
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struct hinic_free_block {
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int page_idx;
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int block_idx;
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};
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struct hinic_wq {
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struct hinic_hwif *hwif;
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int page_idx;
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int block_idx;
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u16 wqebb_size;
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u16 wq_page_size;
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u16 q_depth;
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u16 max_wqe_size;
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u16 num_wqebbs_per_page;
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/* The addresses are 64 bit in the HW */
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u64 block_paddr;
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void **shadow_block_vaddr;
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u64 *block_vaddr;
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int num_q_pages;
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u8 *shadow_wqe;
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u16 *shadow_idx;
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atomic_t cons_idx;
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atomic_t prod_idx;
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atomic_t delta;
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u16 mask;
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};
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struct hinic_wqs {
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struct hinic_hwif *hwif;
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int num_pages;
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/* The addresses are 64 bit in the HW */
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u64 *page_paddr;
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u64 **page_vaddr;
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void ***shadow_page_vaddr;
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struct hinic_free_block *free_blocks;
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int alloc_blk_pos;
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int return_blk_pos;
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int num_free_blks;
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/* Lock for getting a free block from the WQ set */
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struct semaphore alloc_blocks_lock;
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};
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struct hinic_cmdq_pages {
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/* The addresses are 64 bit in the HW */
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u64 page_paddr;
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u64 *page_vaddr;
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void **shadow_page_vaddr;
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struct hinic_hwif *hwif;
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};
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int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages,
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struct hinic_wq *wq, struct hinic_hwif *hwif,
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int cmdq_blocks, u16 wqebb_size, u16 wq_page_size,
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u16 q_depth, u16 max_wqe_size);
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void hinic_wqs_cmdq_free(struct hinic_cmdq_pages *cmdq_pages,
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struct hinic_wq *wq, int cmdq_blocks);
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int hinic_wqs_alloc(struct hinic_wqs *wqs, int num_wqs,
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struct hinic_hwif *hwif);
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void hinic_wqs_free(struct hinic_wqs *wqs);
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int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,
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u16 wqebb_size, u16 wq_page_size, u16 q_depth,
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u16 max_wqe_size);
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void hinic_wq_free(struct hinic_wqs *wqs, struct hinic_wq *wq);
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struct hinic_hw_wqe *hinic_get_wqe(struct hinic_wq *wq, unsigned int wqe_size,
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u16 *prod_idx);
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void hinic_put_wqe(struct hinic_wq *wq, unsigned int wqe_size);
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struct hinic_hw_wqe *hinic_read_wqe(struct hinic_wq *wq, unsigned int wqe_size,
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u16 *cons_idx);
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struct hinic_hw_wqe *hinic_read_wqe_direct(struct hinic_wq *wq, u16 cons_idx);
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void hinic_write_wqe(struct hinic_wq *wq, struct hinic_hw_wqe *wqe,
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unsigned int wqe_size);
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#endif
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