diff options
Diffstat (limited to 'drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h')
| -rw-r--r-- | drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h new file mode 100644 index 000000000000..9c030a0f035e --- /dev/null +++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h @@ -0,0 +1,117 @@ +/* + * 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; + + /* 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_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 |