1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* NFC Digital Protocol stack
* Copyright (c) 2013, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#ifndef __DIGITAL_H
#define __DIGITAL_H
#include <net/nfc/nfc.h>
#include <net/nfc/digital.h>
#include <linux/crc-ccitt.h>
#include <linux/crc-itu-t.h>
#define PR_DBG(fmt, ...) pr_debug("%s: " fmt "\n", __func__, ##__VA_ARGS__)
#define PR_ERR(fmt, ...) pr_err("%s: " fmt "\n", __func__, ##__VA_ARGS__)
#define PROTOCOL_ERR(req) pr_err("%s:%d: NFC Digital Protocol error: %s\n", \
__func__, __LINE__, req)
#define DIGITAL_CMD_IN_SEND 0
#define DIGITAL_CMD_TG_SEND 1
#define DIGITAL_CMD_TG_LISTEN 2
#define DIGITAL_CMD_TG_LISTEN_MDAA 3
#define DIGITAL_MAX_HEADER_LEN 7
#define DIGITAL_CRC_LEN 2
#define DIGITAL_SENSF_NFCID2_NFC_DEP_B1 0x01
#define DIGITAL_SENSF_NFCID2_NFC_DEP_B2 0xFE
#define DIGITAL_SENS_RES_NFC_DEP 0x0100
#define DIGITAL_SEL_RES_NFC_DEP 0x40
#define DIGITAL_SENSF_FELICA_SC 0xFFFF
#define DIGITAL_DRV_CAPS_IN_CRC(ddev) \
((ddev)->driver_capabilities & NFC_DIGITAL_DRV_CAPS_IN_CRC)
#define DIGITAL_DRV_CAPS_TG_CRC(ddev) \
((ddev)->driver_capabilities & NFC_DIGITAL_DRV_CAPS_TG_CRC)
struct digital_data_exch {
data_exchange_cb_t cb;
void *cb_context;
};
struct sk_buff *digital_skb_alloc(struct nfc_digital_dev *ddev,
unsigned int len);
int digital_send_cmd(struct nfc_digital_dev *ddev, u8 cmd_type,
struct sk_buff *skb, u16 timeout,
nfc_digital_cmd_complete_t cmd_cb, void *cb_context);
int digital_in_configure_hw(struct nfc_digital_dev *ddev, int type, int param);
static inline int digital_in_send_cmd(struct nfc_digital_dev *ddev,
struct sk_buff *skb, u16 timeout,
nfc_digital_cmd_complete_t cmd_cb,
void *cb_context)
{
return digital_send_cmd(ddev, DIGITAL_CMD_IN_SEND, skb, timeout, cmd_cb,
cb_context);
}
void digital_poll_next_tech(struct nfc_digital_dev *ddev);
int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_target_found(struct nfc_digital_dev *ddev,
struct nfc_target *target, u8 protocol);
int digital_in_recv_mifare_res(struct sk_buff *resp);
int digital_in_send_atr_req(struct nfc_digital_dev *ddev,
struct nfc_target *target, __u8 comm_mode, __u8 *gb,
size_t gb_len);
int digital_in_send_dep_req(struct nfc_digital_dev *ddev,
struct nfc_target *target, struct sk_buff *skb,
struct digital_data_exch *data_exch);
typedef u16 (*crc_func_t)(u16, const u8 *, size_t);
#define CRC_A_INIT 0x6363
#define CRC_B_INIT 0xFFFF
#define CRC_F_INIT 0x0000
void digital_skb_add_crc(struct sk_buff *skb, crc_func_t crc_func, u16 init,
u8 bitwise_inv, u8 msb_first);
static inline void digital_skb_add_crc_a(struct sk_buff *skb)
{
digital_skb_add_crc(skb, crc_ccitt, CRC_A_INIT, 0, 0);
}
static inline void digital_skb_add_crc_b(struct sk_buff *skb)
{
digital_skb_add_crc(skb, crc_ccitt, CRC_B_INIT, 1, 0);
}
static inline void digital_skb_add_crc_f(struct sk_buff *skb)
{
digital_skb_add_crc(skb, crc_itu_t, CRC_F_INIT, 0, 1);
}
static inline void digital_skb_add_crc_none(struct sk_buff *skb)
{
return;
}
int digital_skb_check_crc(struct sk_buff *skb, crc_func_t crc_func,
u16 crc_init, u8 bitwise_inv, u8 msb_first);
static inline int digital_skb_check_crc_a(struct sk_buff *skb)
{
return digital_skb_check_crc(skb, crc_ccitt, CRC_A_INIT, 0, 0);
}
static inline int digital_skb_check_crc_b(struct sk_buff *skb)
{
return digital_skb_check_crc(skb, crc_ccitt, CRC_B_INIT, 1, 0);
}
static inline int digital_skb_check_crc_f(struct sk_buff *skb)
{
return digital_skb_check_crc(skb, crc_itu_t, CRC_F_INIT, 0, 1);
}
static inline int digital_skb_check_crc_none(struct sk_buff *skb)
{
return 0;
}
#endif /* __DIGITAL_H */
|
