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 #define HINIC_HW_WQ_PAGE_SIZE	SZ_4K
24 #define HINIC_DEFAULT_WQ_PAGE_SIZE SZ_256K
25 
26 #define HINIC_DB_MAX_AREAS      (HINIC_DB_SIZE / HINIC_DB_PAGE_SIZE)
27 
28 enum hinic_db_type {
29 	HINIC_DB_CMDQ_TYPE,
30 	HINIC_DB_SQ_TYPE,
31 };
32 
33 enum hinic_io_path {
34 	HINIC_CTRL_PATH,
35 	HINIC_DATA_PATH,
36 };
37 
38 struct hinic_free_db_area {
39 	int             db_idx[HINIC_DB_MAX_AREAS];
40 
41 	int             alloc_pos;
42 	int             return_pos;
43 
44 	int             num_free;
45 
46 	/* Lock for getting db area */
47 	struct semaphore        idx_lock;
48 };
49 
50 struct hinic_nic_cfg {
51 	/* lock for getting nic cfg */
52 	struct mutex		cfg_mutex;
53 	bool			pause_set;
54 	u32			auto_neg;
55 	u32			rx_pause;
56 	u32			tx_pause;
57 };
58 
59 struct hinic_func_to_io {
60 	struct hinic_hwif       *hwif;
61 	struct hinic_hwdev      *hwdev;
62 	u16			global_qpn;
63 	struct hinic_ceqs       ceqs;
64 
65 	struct hinic_wqs        wqs;
66 
67 	struct hinic_wq         *sq_wq;
68 	struct hinic_wq         *rq_wq;
69 
70 	struct hinic_qp         *qps;
71 	u16                     max_qps;
72 
73 	u16			sq_depth;
74 	u16			rq_depth;
75 
76 	void __iomem            **sq_db;
77 	void __iomem            *db_base;
78 
79 	void                    *ci_addr_base;
80 	dma_addr_t              ci_dma_base;
81 
82 	struct hinic_free_db_area       free_db_area;
83 
84 	void __iomem                    *cmdq_db_area[HINIC_MAX_CMDQ_TYPES];
85 
86 	struct hinic_cmdqs              cmdqs;
87 
88 	u16			max_vfs;
89 	struct vf_data_storage	*vf_infos;
90 	u8			link_status;
91 	struct hinic_nic_cfg	nic_cfg;
92 };
93 
94 struct hinic_wq_page_size {
95 	u8	status;
96 	u8	version;
97 	u8	rsvd0[6];
98 
99 	u16	func_idx;
100 	u8	ppf_idx;
101 	u8	page_size;
102 
103 	u32	rsvd1;
104 };
105 
106 int hinic_set_wq_page_size(struct hinic_hwdev *hwdev, u16 func_idx,
107 			   u32 page_size);
108 
109 int hinic_io_create_qps(struct hinic_func_to_io *func_to_io,
110 			u16 base_qpn, int num_qps,
111 			struct msix_entry *sq_msix_entries,
112 			struct msix_entry *rq_msix_entries);
113 
114 void hinic_io_destroy_qps(struct hinic_func_to_io *func_to_io,
115 			  int num_qps);
116 
117 int hinic_io_init(struct hinic_func_to_io *func_to_io,
118 		  struct hinic_hwif *hwif, u16 max_qps, int num_ceqs,
119 		  struct msix_entry *ceq_msix_entries);
120 
121 void hinic_io_free(struct hinic_func_to_io *func_to_io);
122 
123 #endif
124