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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Huawei HiNIC PCI Express Linux driver4 * Copyright(c) 2017 Huawei Technologies Co., Ltd5 */6 7#ifndef HINIC_HW_WQ_H8#define HINIC_HW_WQ_H9 10#include <linux/types.h>11#include <linux/semaphore.h>12#include <linux/atomic.h>13 14#include "hinic_hw_if.h"15#include "hinic_hw_wqe.h"16 17struct hinic_free_block {18 int page_idx;19 int block_idx;20};21 22struct hinic_wq {23 struct hinic_hwif *hwif;24 25 int page_idx;26 int block_idx;27 28 u16 wqebb_size;29 u32 wq_page_size;30 u16 q_depth;31 u16 max_wqe_size;32 u16 num_wqebbs_per_page;33 u16 wqebbs_per_page_shift;34 u16 wqebb_size_shift;35 /* The addresses are 64 bit in the HW */36 u64 block_paddr;37 void **shadow_block_vaddr;38 u64 *block_vaddr;39 40 int num_q_pages;41 u8 *shadow_wqe;42 u16 *shadow_idx;43 44 atomic_t cons_idx;45 atomic_t prod_idx;46 atomic_t delta;47 u16 mask;48};49 50struct hinic_wqs {51 struct hinic_hwif *hwif;52 int num_pages;53 54 /* The addresses are 64 bit in the HW */55 u64 *page_paddr;56 u64 **page_vaddr;57 void ***shadow_page_vaddr;58 59 struct hinic_free_block *free_blocks;60 int alloc_blk_pos;61 int return_blk_pos;62 int num_free_blks;63 64 /* Lock for getting a free block from the WQ set */65 struct semaphore alloc_blocks_lock;66};67 68struct hinic_cmdq_pages {69 /* The addresses are 64 bit in the HW */70 u64 page_paddr;71 u64 *page_vaddr;72 void **shadow_page_vaddr;73 74 struct hinic_hwif *hwif;75};76 77int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages,78 struct hinic_wq *wq, struct hinic_hwif *hwif,79 int cmdq_blocks, u16 wqebb_size, u32 wq_page_size,80 u16 q_depth, u16 max_wqe_size);81 82void hinic_wqs_cmdq_free(struct hinic_cmdq_pages *cmdq_pages,83 struct hinic_wq *wq, int cmdq_blocks);84 85int hinic_wqs_alloc(struct hinic_wqs *wqs, int num_wqs,86 struct hinic_hwif *hwif);87 88void hinic_wqs_free(struct hinic_wqs *wqs);89 90int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,91 u16 wqebb_size, u32 wq_page_size, u16 q_depth,92 u16 max_wqe_size);93 94void hinic_wq_free(struct hinic_wqs *wqs, struct hinic_wq *wq);95 96struct hinic_hw_wqe *hinic_get_wqe(struct hinic_wq *wq, unsigned int wqe_size,97 u16 *prod_idx);98 99void hinic_return_wqe(struct hinic_wq *wq, unsigned int wqe_size);100 101void hinic_put_wqe(struct hinic_wq *wq, unsigned int wqe_size);102 103struct hinic_hw_wqe *hinic_read_wqe(struct hinic_wq *wq, unsigned int wqe_size,104 u16 *cons_idx);105 106struct hinic_hw_wqe *hinic_read_wqe_direct(struct hinic_wq *wq, u16 cons_idx);107 108void hinic_write_wqe(struct hinic_wq *wq, struct hinic_hw_wqe *wqe,109 unsigned int wqe_size);110 111#endif112