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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 two6 * licenses. You may choose to be licensed under the terms of the GNU7 * General Public License (GPL) Version 2, available from the file8 * COPYING in the main directory of this source tree, or the9 * OpenIB.org BSD license below:10 *11 * Redistribution and use in source and binary forms, with or12 * without modification, are permitted provided that the following13 * conditions are met:14 *15 * - Redistributions of source code must retain the above16 * copyright notice, this list of conditions and the following17 * disclaimer.18 *19 * - Redistributions in binary form must reproduce the above20 * copyright notice, this list of conditions and the following21 * disclaimer in the documentation and/or other materials22 * 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 OF26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE31 * SOFTWARE.32 */33 34#ifndef _HNS_ROCE_HEM_H35#define _HNS_ROCE_HEM_H36 37#define HEM_HOP_STEP_DIRECT 0xff38 39enum {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 71struct hns_roce_hem {72 void *buf;73 dma_addr_t dma;74 unsigned long size;75 refcount_t refcount;76};77 78struct 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 88void hns_roce_free_hem(struct hns_roce_dev *hr_dev, struct hns_roce_hem *hem);89int hns_roce_table_get(struct hns_roce_dev *hr_dev,90 struct hns_roce_hem_table *table, unsigned long obj);91void hns_roce_table_put(struct hns_roce_dev *hr_dev,92 struct hns_roce_hem_table *table, unsigned long obj);93void *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);96int 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);99void hns_roce_cleanup_hem_table(struct hns_roce_dev *hr_dev,100 struct hns_roce_hem_table *table);101void hns_roce_cleanup_hem(struct hns_roce_dev *hr_dev);102int 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);105bool hns_roce_check_whether_mhop(struct hns_roce_dev *hr_dev, u32 type);106 107void hns_roce_hem_list_init(struct hns_roce_hem_list *hem_list);108int hns_roce_hem_list_calc_root_ba(const struct hns_roce_buf_region *regions,109 int region_cnt, int unit);110int 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);114void hns_roce_hem_list_release(struct hns_roce_dev *hr_dev,115 struct hns_roce_hem_list *hem_list);116void *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