1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Huawei HiNIC PCI Express Linux driver 4 * Copyright(c) 2017 Huawei Technologies Co., Ltd 5 */ 6 7 #ifndef HINIC_HW_IO_H 8 #define HINIC_HW_IO_H 9 10 #include <linux/types.h> 11 #include <linux/pci.h> 12 #include <linux/semaphore.h> 13 #include <linux/sizes.h> 14 15 #include "hinic_hw_if.h" 16 #include "hinic_hw_eqs.h" 17 #include "hinic_hw_wq.h" 18 #include "hinic_hw_cmdq.h" 19 #include "hinic_hw_qp.h" 20 21 #define HINIC_DB_PAGE_SIZE SZ_4K 22 #define HINIC_DB_SIZE SZ_4M 23 24 #define HINIC_DB_MAX_AREAS (HINIC_DB_SIZE / HINIC_DB_PAGE_SIZE) 25 26 enum hinic_db_type { 27 HINIC_DB_CMDQ_TYPE, 28 HINIC_DB_SQ_TYPE, 29 }; 30 31 enum hinic_io_path { 32 HINIC_CTRL_PATH, 33 HINIC_DATA_PATH, 34 }; 35 36 struct hinic_free_db_area { 37 int db_idx[HINIC_DB_MAX_AREAS]; 38 39 int alloc_pos; 40 int return_pos; 41 42 int num_free; 43 44 /* Lock for getting db area */ 45 struct semaphore idx_lock; 46 }; 47 48 struct hinic_func_to_io { 49 struct hinic_hwif *hwif; 50 51 struct hinic_ceqs ceqs; 52 53 struct hinic_wqs wqs; 54 55 struct hinic_wq *sq_wq; 56 struct hinic_wq *rq_wq; 57 58 struct hinic_qp *qps; 59 u16 max_qps; 60 61 void __iomem **sq_db; 62 void __iomem *db_base; 63 64 void *ci_addr_base; 65 dma_addr_t ci_dma_base; 66 67 struct hinic_free_db_area free_db_area; 68 69 void __iomem *cmdq_db_area[HINIC_MAX_CMDQ_TYPES]; 70 71 struct hinic_cmdqs cmdqs; 72 }; 73 74 int hinic_io_create_qps(struct hinic_func_to_io *func_to_io, 75 u16 base_qpn, int num_qps, 76 struct msix_entry *sq_msix_entries, 77 struct msix_entry *rq_msix_entries); 78 79 void hinic_io_destroy_qps(struct hinic_func_to_io *func_to_io, 80 int num_qps); 81 82 int hinic_io_init(struct hinic_func_to_io *func_to_io, 83 struct hinic_hwif *hwif, u16 max_qps, int num_ceqs, 84 struct msix_entry *ceq_msix_entries); 85 86 void hinic_io_free(struct hinic_func_to_io *func_to_io); 87 88 #endif 89