1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2019 HiSilicon Limited. */
3 #ifndef __HISI_HPRE_H
4 #define __HISI_HPRE_H
5 
6 #include <linux/list.h>
7 #include <linux/hisi_acc_qm.h>
8 
9 #define HPRE_SQE_SIZE			sizeof(struct hpre_sqe)
10 #define HPRE_PF_DEF_Q_NUM		64
11 #define HPRE_PF_DEF_Q_BASE		0
12 
13 /*
14  * type used in qm sqc DW6.
15  * 0 - Algorithm which has been supported in V2, like RSA, DH and so on;
16  * 1 - ECC algorithm in V3.
17  */
18 #define HPRE_V2_ALG_TYPE	0
19 #define HPRE_V3_ECC_ALG_TYPE	1
20 
21 enum {
22 	HPRE_CLUSTER0,
23 	HPRE_CLUSTER1,
24 	HPRE_CLUSTER2,
25 	HPRE_CLUSTER3,
26 	HPRE_CLUSTERS_NUM_MAX
27 };
28 
29 enum hpre_ctrl_dbgfs_file {
30 	HPRE_CLEAR_ENABLE,
31 	HPRE_CLUSTER_CTRL,
32 	HPRE_DEBUG_FILE_NUM,
33 };
34 
35 enum hpre_dfx_dbgfs_file {
36 	HPRE_SEND_CNT,
37 	HPRE_RECV_CNT,
38 	HPRE_SEND_FAIL_CNT,
39 	HPRE_SEND_BUSY_CNT,
40 	HPRE_OVER_THRHLD_CNT,
41 	HPRE_OVERTIME_THRHLD,
42 	HPRE_INVALID_REQ_CNT,
43 	HPRE_DFX_FILE_NUM
44 };
45 
46 #define HPRE_DEBUGFS_FILE_NUM (HPRE_DEBUG_FILE_NUM + HPRE_CLUSTERS_NUM_MAX - 1)
47 
48 struct hpre_debugfs_file {
49 	int index;
50 	enum hpre_ctrl_dbgfs_file type;
51 	spinlock_t lock;
52 	struct hpre_debug *debug;
53 };
54 
55 struct hpre_dfx {
56 	atomic64_t value;
57 	enum hpre_dfx_dbgfs_file type;
58 };
59 
60 /*
61  * One HPRE controller has one PF and multiple VFs, some global configurations
62  * which PF has need this structure.
63  * Just relevant for PF.
64  */
65 struct hpre_debug {
66 	struct hpre_dfx dfx[HPRE_DFX_FILE_NUM];
67 	struct hpre_debugfs_file files[HPRE_DEBUGFS_FILE_NUM];
68 };
69 
70 struct hpre {
71 	struct hisi_qm qm;
72 	struct hpre_debug debug;
73 	unsigned long status;
74 };
75 
76 enum hpre_alg_type {
77 	HPRE_ALG_NC_NCRT = 0x0,
78 	HPRE_ALG_NC_CRT = 0x1,
79 	HPRE_ALG_KG_STD = 0x2,
80 	HPRE_ALG_KG_CRT = 0x3,
81 	HPRE_ALG_DH_G2 = 0x4,
82 	HPRE_ALG_DH = 0x5,
83 	HPRE_ALG_ECC_MUL = 0xD,
84 	/* shared by x25519 and x448, but x448 is not supported now */
85 	HPRE_ALG_CURVE25519_MUL = 0x10,
86 };
87 
88 struct hpre_sqe {
89 	__le32 dw0;
90 	__u8 task_len1;
91 	__u8 task_len2;
92 	__u8 mrttest_num;
93 	__u8 resv1;
94 	__le64 key;
95 	__le64 in;
96 	__le64 out;
97 	__le16 tag;
98 	__le16 resv2;
99 #define _HPRE_SQE_ALIGN_EXT	7
100 	__le32 rsvd1[_HPRE_SQE_ALIGN_EXT];
101 };
102 
103 struct hisi_qp *hpre_create_qp(u8 type);
104 int hpre_algs_register(struct hisi_qm *qm);
105 void hpre_algs_unregister(struct hisi_qm *qm);
106 bool hpre_check_alg_support(struct hisi_qm *qm, u32 alg);
107 #endif
108