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_WQ_H |
8 | #define HINIC_HW_WQ_H |
9 | |
10 | #include <linux/types.h> |
11 | #include <linux/semaphore.h> |
12 | #include <linux/atomic.h> |
13 | |
14 | #include "hinic_hw_if.h" |
15 | #include "hinic_hw_wqe.h" |
16 | |
17 | struct hinic_free_block { |
18 | int page_idx; |
19 | int block_idx; |
20 | }; |
21 | |
22 | struct hinic_wq { |
23 | struct hinic_hwif *hwif; |
24 | |
25 | int page_idx; |
26 | int block_idx; |
27 | |
28 | u16 wqebb_size; |
29 | u32 wq_page_size; |
30 | u16 q_depth; |
31 | u16 max_wqe_size; |
32 | u16 num_wqebbs_per_page; |
33 | u16 wqebbs_per_page_shift; |
34 | u16 wqebb_size_shift; |
35 | /* The addresses are 64 bit in the HW */ |
36 | u64 block_paddr; |
37 | void **shadow_block_vaddr; |
38 | u64 *block_vaddr; |
39 | |
40 | int num_q_pages; |
41 | u8 *shadow_wqe; |
42 | u16 *shadow_idx; |
43 | |
44 | atomic_t cons_idx; |
45 | atomic_t prod_idx; |
46 | atomic_t delta; |
47 | u16 mask; |
48 | }; |
49 | |
50 | struct hinic_wqs { |
51 | struct hinic_hwif *hwif; |
52 | int num_pages; |
53 | |
54 | /* The addresses are 64 bit in the HW */ |
55 | u64 *page_paddr; |
56 | u64 **page_vaddr; |
57 | void ***shadow_page_vaddr; |
58 | |
59 | struct hinic_free_block *free_blocks; |
60 | int alloc_blk_pos; |
61 | int return_blk_pos; |
62 | int num_free_blks; |
63 | |
64 | /* Lock for getting a free block from the WQ set */ |
65 | struct semaphore alloc_blocks_lock; |
66 | }; |
67 | |
68 | struct hinic_cmdq_pages { |
69 | /* The addresses are 64 bit in the HW */ |
70 | u64 page_paddr; |
71 | u64 *page_vaddr; |
72 | void **shadow_page_vaddr; |
73 | |
74 | struct hinic_hwif *hwif; |
75 | }; |
76 | |
77 | int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages, |
78 | struct hinic_wq *wq, struct hinic_hwif *hwif, |
79 | int cmdq_blocks, u16 wqebb_size, u32 wq_page_size, |
80 | u16 q_depth, u16 max_wqe_size); |
81 | |
82 | void hinic_wqs_cmdq_free(struct hinic_cmdq_pages *cmdq_pages, |
83 | struct hinic_wq *wq, int cmdq_blocks); |
84 | |
85 | int hinic_wqs_alloc(struct hinic_wqs *wqs, int num_wqs, |
86 | struct hinic_hwif *hwif); |
87 | |
88 | void hinic_wqs_free(struct hinic_wqs *wqs); |
89 | |
90 | int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq, |
91 | u16 wqebb_size, u32 wq_page_size, u16 q_depth, |
92 | u16 max_wqe_size); |
93 | |
94 | void hinic_wq_free(struct hinic_wqs *wqs, struct hinic_wq *wq); |
95 | |
96 | struct hinic_hw_wqe *hinic_get_wqe(struct hinic_wq *wq, unsigned int wqe_size, |
97 | u16 *prod_idx); |
98 | |
99 | void hinic_return_wqe(struct hinic_wq *wq, unsigned int wqe_size); |
100 | |
101 | void hinic_put_wqe(struct hinic_wq *wq, unsigned int wqe_size); |
102 | |
103 | struct hinic_hw_wqe *hinic_read_wqe(struct hinic_wq *wq, unsigned int wqe_size, |
104 | u16 *cons_idx); |
105 | |
106 | struct hinic_hw_wqe *hinic_read_wqe_direct(struct hinic_wq *wq, u16 cons_idx); |
107 | |
108 | void hinic_write_wqe(struct hinic_wq *wq, struct hinic_hw_wqe *wqe, |
109 | unsigned int wqe_size); |
110 | |
111 | #endif |
112 | |