1
|
/* Generic Philips CL RC632 Routines
|
2
|
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
|
3
|
*
|
4
|
* This program is free software; you can redistribute it and/or modify
|
5
|
* it under the terms of the GNU General Public License as published by
|
6
|
* the Free Software Foundation; either version 2 of the License, or
|
7
|
* (at your option) any later version.
|
8
|
*
|
9
|
* This program is distributed in the hope that it will be useful,
|
10
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
11
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
12
|
* GNU General Public License for more details.
|
13
|
*
|
14
|
* You should have received a copy of the GNU General Public License
|
15
|
* along with this program; if not, write to the Free Software
|
16
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
17
|
*
|
18
|
*/
|
19
|
|
20
|
#ifdef DEBUG
|
21
|
#undef DEBUG
|
22
|
#endif
|
23
|
|
24
|
#include <sys/types.h>
|
25
|
#include <string.h>
|
26
|
#include <errno.h>
|
27
|
#include <cl_rc632.h>
|
28
|
#include "rc632.h"
|
29
|
#include <os/dbgu.h>
|
30
|
#include <librfid/rfid_layer2_iso14443a.h>
|
31
|
#include <librfid/rfid_protocol_mifare_classic.h>
|
32
|
|
33
|
/* initially we use the same values as cm5121 */
|
34
|
#define OPENPCD_CW_CONDUCTANCE 0x3f
|
35
|
#define OPENPCD_MOD_CONDUCTANCE 0x3f
|
36
|
#define OPENPCD_14443A_BITPHASE 0xa9
|
37
|
#define OPENPCD_14443A_THRESHOLD 0xff
|
38
|
#define OPENPCD_14443B_BITPHASE 0xad
|
39
|
#define OPENPCD_14443B_THRESHOLD 0xff
|
40
|
|
41
|
#define RC632_TMO_AUTH1 14000
|
42
|
|
43
|
#define RC632_TIMEOUT_FUZZ_FACTOR 10
|
44
|
|
45
|
#define USE_IRQ
|
46
|
|
47
|
#define ENTER() DEBUGPCRF("entering")
|
48
|
struct rfid_asic rc632;
|
49
|
|
50
|
static int
|
51
|
rc632_set_bit_mask(struct rfid_asic_handle *handle,
|
52
|
uint8_t reg, uint8_t mask, uint8_t val)
|
53
|
{
|
54
|
int ret;
|
55
|
uint8_t tmp;
|
56
|
|
57
|
ret = opcd_rc632_reg_read(handle, reg, &tmp);
|
58
|
if (ret < 0)
|
59
|
return ret;
|
60
|
|
61
|
/* if bits are already like we want them, abort */
|
62
|
if ((tmp & mask) == val)
|
63
|
return 0;
|
64
|
|
65
|
return opcd_rc632_reg_write(handle, reg, (tmp & ~mask)|(val & mask));
|
66
|
}
|
67
|
|
68
|
int
|
69
|
rc632_turn_on_rf(struct rfid_asic_handle *handle)
|
70
|
{
|
71
|
ENTER();
|
72
|
return opcd_rc632_set_bits(handle, RC632_REG_TX_CONTROL, 0x03);
|
73
|
}
|
74
|
|
75
|
int
|
76
|
rc632_turn_off_rf(struct rfid_asic_handle *handle)
|
77
|
{
|
78
|
ENTER();
|
79
|
return opcd_rc632_clear_bits(handle, RC632_REG_TX_CONTROL, 0x03);
|
80
|
}
|
81
|
|
82
|
static int
|
83
|
rc632_power_up(struct rfid_asic_handle *handle)
|
84
|
{
|
85
|
ENTER();
|
86
|
return opcd_rc632_clear_bits(handle, RC632_REG_CONTROL,
|
87
|
RC632_CONTROL_POWERDOWN);
|
88
|
}
|
89
|
|
90
|
static int
|
91
|
rc632_power_down(struct rfid_asic_handle *handle)
|
92
|
{
|
93
|
return opcd_rc632_set_bits(handle, RC632_REG_CONTROL,
|
94
|
RC632_CONTROL_POWERDOWN);
|
95
|
}
|
96
|
|
97
|
#define MAX_WRITE_LEN 16 /* see Sec. 18.6.1.2 of RC632 Spec Rev. 3.2. */
|
98
|
|
99
|
int
|
100
|
rc632_write_eeprom(struct rfid_asic_handle *handle,
|
101
|
uint16_t addr, uint8_t len, uint8_t *data)
|
102
|
{
|
103
|
uint8_t sndbuf[MAX_WRITE_LEN + 2];
|
104
|
uint8_t reg;
|
105
|
int ret;
|
106
|
|
107
|
if (len > MAX_WRITE_LEN)
|
108
|
return -EINVAL;
|
109
|
if (addr < 0x10)
|
110
|
return -EPERM;
|
111
|
if (addr > 0x1ff)
|
112
|
return -EINVAL;
|
113
|
|
114
|
sndbuf[0] = addr & 0x00ff; /* LSB */
|
115
|
sndbuf[1] = addr >> 8; /* MSB */
|
116
|
memcpy(&sndbuf[2], data, len);
|
117
|
|
118
|
ret = opcd_rc632_fifo_write(handle, len + 2, sndbuf, 0x03);
|
119
|
if (ret < 0)
|
120
|
return ret;
|
121
|
|
122
|
ret = opcd_rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_WRITE_E2);
|
123
|
if (ret < 0)
|
124
|
return ret;
|
125
|
|
126
|
ret = opcd_rc632_reg_read(handle, RC632_REG_ERROR_FLAG, ®);
|
127
|
if (ret < 0)
|
128
|
return ret;
|
129
|
|
130
|
if (reg & RC632_ERR_FLAG_ACCESS_ERR)
|
131
|
return -EPERM;
|
132
|
|
133
|
while (1) {
|
134
|
ret = opcd_rc632_reg_read(handle, RC632_REG_SECONDARY_STATUS, ®);
|
135
|
if (ret < 0)
|
136
|
return ret;
|
137
|
|
138
|
if (reg & RC632_SEC_ST_E2_READY) {
|
139
|
/* the E2Write command must be terminated, See sec. 18.6.1.3 */
|
140
|
ret = opcd_rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_IDLE);
|
141
|
break;
|
142
|
}
|
143
|
}
|
144
|
|
145
|
return ret;
|
146
|
}
|
147
|
|
148
|
int
|
149
|
rc632_read_eeprom(struct rfid_asic_handle *handle, uint16_t addr, uint8_t len,
|
150
|
uint8_t *recvbuf)
|
151
|
{
|
152
|
uint8_t sndbuf[3];
|
153
|
uint8_t err;
|
154
|
int ret;
|
155
|
|
156
|
sndbuf[0] = (addr & 0xff);
|
157
|
sndbuf[1] = addr >> 8;
|
158
|
sndbuf[2] = len;
|
159
|
|
160
|
ret = opcd_rc632_fifo_write(handle, 3, sndbuf, 0x03);
|
161
|
if (ret < 0)
|
162
|
return ret;
|
163
|
|
164
|
ret = opcd_rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_READ_E2);
|
165
|
if (ret < 0)
|
166
|
return ret;
|
167
|
|
168
|
/* usleep(20000); */
|
169
|
|
170
|
ret = opcd_rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &err);
|
171
|
if (err & RC632_ERR_FLAG_ACCESS_ERR)
|
172
|
return -EPERM;
|
173
|
|
174
|
ret = opcd_rc632_reg_read(handle, RC632_REG_FIFO_LENGTH, &err);
|
175
|
if (err < len)
|
176
|
len = err;
|
177
|
|
178
|
ret = opcd_rc632_fifo_read(handle, len, recvbuf);
|
179
|
if (ret < 0)
|
180
|
return ret;
|
181
|
|
182
|
return len;
|
183
|
}
|
184
|
|
185
|
#define RC632_E2_PRODUCT_TYPE 0
|
186
|
#define RC632_E2_PRODUCT_SERIAL 8
|
187
|
#define RC632_E2_RS_MAX_P 14
|
188
|
|
189
|
int rc632_get_serial(struct rfid_asic_handle *handle,
|
190
|
uint32_t *serial)
|
191
|
{
|
192
|
return rc632_read_eeprom(handle, RC632_E2_PRODUCT_SERIAL,
|
193
|
4, (uint8_t *)serial);
|
194
|
}
|