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/*
* Copyright (c) 2016 Hisilicon Limited.
* Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _HNS_ROCE_HEM_H
#define _HNS_ROCE_HEM_H
#define HEM_HOP_STEP_DIRECT 0xff
enum {
/* MAP HEM(Hardware Entry Memory) */
HEM_TYPE_QPC = 0,
HEM_TYPE_MTPT,
HEM_TYPE_CQC,
HEM_TYPE_SRQC,
HEM_TYPE_SCCC,
HEM_TYPE_QPC_TIMER,
HEM_TYPE_CQC_TIMER,
HEM_TYPE_GMV,
/* UNMAP HEM */
HEM_TYPE_MTT,
HEM_TYPE_CQE,
HEM_TYPE_SRQWQE,
HEM_TYPE_IDX,
HEM_TYPE_IRRL,
HEM_TYPE_TRRL,
};
#define check_whether_bt_num_3(type, hop_num) \
((type) < HEM_TYPE_MTT && (hop_num) == 2)
#define check_whether_bt_num_2(type, hop_num) \
(((type) < HEM_TYPE_MTT && (hop_num) == 1) || \
((type) >= HEM_TYPE_MTT && (hop_num) == 2))
#define check_whether_bt_num_1(type, hop_num) \
(((type) < HEM_TYPE_MTT && (hop_num) == HNS_ROCE_HOP_NUM_0) || \
((type) >= HEM_TYPE_MTT && (hop_num) == 1) || \
((type) >= HEM_TYPE_MTT && (hop_num) == HNS_ROCE_HOP_NUM_0))
struct hns_roce_hem {
void *buf;
dma_addr_t dma;
unsigned long size;
refcount_t refcount;
};
struct hns_roce_hem_mhop {
u32 hop_num;
u32 buf_chunk_size;
u32 bt_chunk_size;
u32 ba_l0_num;
u32 l0_idx; /* level 0 base address table index */
u32 l1_idx; /* level 1 base address table index */
u32 l2_idx; /* level 2 base address table index */
};
void hns_roce_free_hem(struct hns_roce_dev *hr_dev, struct hns_roce_hem *hem);
int hns_roce_table_get(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_table *table, unsigned long obj);
void hns_roce_table_put(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_table *table, unsigned long obj);
void *hns_roce_table_find(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_table *table, unsigned long obj,
dma_addr_t *dma_handle);
int hns_roce_init_hem_table(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_table *table, u32 type,
unsigned long obj_size, unsigned long nobj);
void hns_roce_cleanup_hem_table(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_table *table);
void hns_roce_cleanup_hem(struct hns_roce_dev *hr_dev);
int hns_roce_calc_hem_mhop(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_table *table, unsigned long *obj,
struct hns_roce_hem_mhop *mhop);
bool hns_roce_check_whether_mhop(struct hns_roce_dev *hr_dev, u32 type);
void hns_roce_hem_list_init(struct hns_roce_hem_list *hem_list);
int hns_roce_hem_list_calc_root_ba(const struct hns_roce_buf_region *regions,
int region_cnt, int unit);
int hns_roce_hem_list_request(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_list *hem_list,
const struct hns_roce_buf_region *regions,
int region_cnt, unsigned int bt_pg_shift);
void hns_roce_hem_list_release(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_list *hem_list);
void *hns_roce_hem_list_find_mtt(struct hns_roce_dev *hr_dev,
struct hns_roce_hem_list *hem_list,
int offset, int *mtt_cnt);
#endif /* _HNS_ROCE_HEM_H */
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