1 /* 2 * Copyright (c) 2016 Hisilicon Limited. 3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #ifndef _HNS_ROCE_HEM_H 35 #define _HNS_ROCE_HEM_H 36 37 #define HEM_HOP_STEP_DIRECT 0xff 38 39 enum { 40 /* MAP HEM(Hardware Entry Memory) */ 41 HEM_TYPE_QPC = 0, 42 HEM_TYPE_MTPT, 43 HEM_TYPE_CQC, 44 HEM_TYPE_SRQC, 45 HEM_TYPE_SCCC, 46 HEM_TYPE_QPC_TIMER, 47 HEM_TYPE_CQC_TIMER, 48 HEM_TYPE_GMV, 49 50 /* UNMAP HEM */ 51 HEM_TYPE_MTT, 52 HEM_TYPE_CQE, 53 HEM_TYPE_SRQWQE, 54 HEM_TYPE_IDX, 55 HEM_TYPE_IRRL, 56 HEM_TYPE_TRRL, 57 }; 58 59 #define check_whether_bt_num_3(type, hop_num) \ 60 ((type) < HEM_TYPE_MTT && (hop_num) == 2) 61 62 #define check_whether_bt_num_2(type, hop_num) \ 63 (((type) < HEM_TYPE_MTT && (hop_num) == 1) || \ 64 ((type) >= HEM_TYPE_MTT && (hop_num) == 2)) 65 66 #define check_whether_bt_num_1(type, hop_num) \ 67 (((type) < HEM_TYPE_MTT && (hop_num) == HNS_ROCE_HOP_NUM_0) || \ 68 ((type) >= HEM_TYPE_MTT && (hop_num) == 1) || \ 69 ((type) >= HEM_TYPE_MTT && (hop_num) == HNS_ROCE_HOP_NUM_0)) 70 71 struct hns_roce_hem { 72 void *buf; 73 dma_addr_t dma; 74 unsigned long size; 75 refcount_t refcount; 76 }; 77 78 struct hns_roce_hem_mhop { 79 u32 hop_num; 80 u32 buf_chunk_size; 81 u32 bt_chunk_size; 82 u32 ba_l0_num; 83 u32 l0_idx; /* level 0 base address table index */ 84 u32 l1_idx; /* level 1 base address table index */ 85 u32 l2_idx; /* level 2 base address table index */ 86 }; 87 88 void hns_roce_free_hem(struct hns_roce_dev *hr_dev, struct hns_roce_hem *hem); 89 int hns_roce_table_get(struct hns_roce_dev *hr_dev, 90 struct hns_roce_hem_table *table, unsigned long obj); 91 void hns_roce_table_put(struct hns_roce_dev *hr_dev, 92 struct hns_roce_hem_table *table, unsigned long obj); 93 void *hns_roce_table_find(struct hns_roce_dev *hr_dev, 94 struct hns_roce_hem_table *table, unsigned long obj, 95 dma_addr_t *dma_handle); 96 int hns_roce_init_hem_table(struct hns_roce_dev *hr_dev, 97 struct hns_roce_hem_table *table, u32 type, 98 unsigned long obj_size, unsigned long nobj); 99 void hns_roce_cleanup_hem_table(struct hns_roce_dev *hr_dev, 100 struct hns_roce_hem_table *table); 101 void hns_roce_cleanup_hem(struct hns_roce_dev *hr_dev); 102 int hns_roce_calc_hem_mhop(struct hns_roce_dev *hr_dev, 103 struct hns_roce_hem_table *table, unsigned long *obj, 104 struct hns_roce_hem_mhop *mhop); 105 bool hns_roce_check_whether_mhop(struct hns_roce_dev *hr_dev, u32 type); 106 107 void hns_roce_hem_list_init(struct hns_roce_hem_list *hem_list); 108 int hns_roce_hem_list_calc_root_ba(const struct hns_roce_buf_region *regions, 109 int region_cnt, int unit); 110 int hns_roce_hem_list_request(struct hns_roce_dev *hr_dev, 111 struct hns_roce_hem_list *hem_list, 112 const struct hns_roce_buf_region *regions, 113 int region_cnt, unsigned int bt_pg_shift); 114 void hns_roce_hem_list_release(struct hns_roce_dev *hr_dev, 115 struct hns_roce_hem_list *hem_list); 116 void *hns_roce_hem_list_find_mtt(struct hns_roce_dev *hr_dev, 117 struct hns_roce_hem_list *hem_list, 118 int offset, int *mtt_cnt); 119 120 #endif /* _HNS_ROCE_HEM_H */ 121