git.rot13.org Git - librfid/blob - src/rfid_reader_cm5121.c

   1 /* Omnikey CardMan 5121 specific RC632 transport layer
   2  *
   3  * (C) 2005 by Harald Welte <laforge@gnumonks.org>
   4  *
   5  * The 5121 is an Atmel AT98C5122 based USB CCID reader (probably the same
   6  * design like the 3121).  It's CL RC632 is connected via address/data bus,
   7  * not via SPI.
   8  *
   9  * The vendor-supplied reader firmware provides some undocumented extensions
  10  * to CCID (via PC_to_RDR_Escape) that allow access to registers and FIFO of
  11  * the RC632.
  12  *
  13  */
  14
  15 /*
  16  *  This program is free software; you can redistribute it and/or modify
  17  *  it under the terms of the GNU General Public License version 2
  18  *  as published by the Free Software Foundation
  19  *
  20  *  This program is distributed in the hope that it will be useful,
  21  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  *  GNU General Public License for more details.
  24  *
  25  *  You should have received a copy of the GNU General Public License
  26  *  along with this program; if not, write to the Free Software
  27  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  28  */
  29
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32 #include <string.h>
  33 #include <errno.h>
  34
  35 #include <rfid/rfid.h>
  36 #include <rfid/rfid_reader.h>
  37 #include <rfid/rfid_asic.h>
  38 #include <rfid/rfid_asic_rc632.h>
  39 #include <rfid/rfid_reader_cm5121.h>
  40
  41 /* FIXME */
  42 #include "rc632.h"
  43
  44 //#define SENDBUF_LEN   40
  45 #define SENDBUF_LEN     100
  46 #define RECVBUF_LEN     40
  47
  48 #if 0
  49 #ifdef DEBUGP
  50 #undef DEBUGP
  51 #define DEBUGP(x, ...)
  52 #define DEBUGPC(x, ...)
  53 #endif
  54 #endif
  55
  56 static
  57 int Write1ByteToReg(struct rfid_asic_transport_handle *rath,
  58                     unsigned char reg, unsigned char value)
  59 {
  60         unsigned char sndbuf[SENDBUF_LEN];
  61         unsigned char rcvbuf[RECVBUF_LEN];
  62         unsigned int retlen = RECVBUF_LEN;
  63
  64         sndbuf[0] = 0x20;
  65         sndbuf[1] = 0x00;
  66         sndbuf[2] = 0x01;
  67         sndbuf[3] = 0x00;
  68         sndbuf[4] = 0x00;
  69         sndbuf[5] = 0x00;
  70         sndbuf[6] = reg;
  71         sndbuf[7] = value;
  72
  73         DEBUGP("reg=0x%02x, val=%02x: ", reg, value);
  74
  75         if (PC_to_RDR_Escape(rath->data, sndbuf, 8, rcvbuf,
  76                              &retlen) == 0) {
  77                 DEBUGPC("OK\n");
  78                 return 0;
  79         }
  80
  81         DEBUGPC("ERROR\n");
  82         return -1;
  83 }
  84
  85 static int Read1ByteFromReg(struct rfid_asic_transport_handle *rath,
  86                             unsigned char reg,
  87                             unsigned char *value)
  88 {
  89         unsigned char sndbuf[SENDBUF_LEN];
  90         unsigned char recvbuf[RECVBUF_LEN];
  91         unsigned int retlen = sizeof(recvbuf);
  92
  93         sndbuf[0] = 0x20;
  94         sndbuf[1] = 0x00;
  95         sndbuf[2] = 0x00;
  96         sndbuf[3] = 0x00;
  97         sndbuf[4] = 0x01;
  98         sndbuf[5] = 0x00;
  99         sndbuf[6] = reg;
 100
 101         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf,
 102                              &retlen) == 0) {
 103                 *value = recvbuf[1];
 104                 DEBUGP("reg=0x%02x, val=%02x: ", reg, *value);
 105                 DEBUGPC("OK\n");
 106                 return 0;
 107         }
 108
 109         DEBUGPC("ERROR\n");
 110         return -1;
 111 }
 112
 113 static int ReadNBytesFromFIFO(struct rfid_asic_transport_handle *rath,
 114                               unsigned char num_bytes,
 115                               unsigned char *buf)
 116 {
 117         unsigned char sndbuf[SENDBUF_LEN];
 118         unsigned char recvbuf[0x7f];
 119         unsigned int retlen = sizeof(recvbuf);
 120
 121         sndbuf[0] = 0x20;
 122         sndbuf[1] = 0x00;
 123         sndbuf[2] = 0x00;
 124         sndbuf[3] = 0x00;
 125         sndbuf[4] = num_bytes;
 126         sndbuf[5] = 0x00;
 127         sndbuf[6] = 0x02;
 128
 129         DEBUGP("num_bytes=%u: ", num_bytes);
 130         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf, &retlen) == 0) {
 131                 DEBUGPC("%u [%s]\n", retlen,
 132                         rfid_hexdump(recvbuf+1, num_bytes));
 133                 memcpy(buf, recvbuf+1, num_bytes); // len == 0x7f
 134                 return 0;
 135         }
 136
 137         DEBUGPC("ERROR\n");
 138         return -1;
 139 }
 140
 141 static int WriteNBytesToFIFO(struct rfid_asic_transport_handle *rath,
 142                              unsigned char len,
 143                              const unsigned char *bytes,
 144                              unsigned char flags)
 145 {
 146         unsigned char sndbuf[SENDBUF_LEN];
 147         unsigned char recvbuf[0x7f];
 148         unsigned int retlen = sizeof(recvbuf);
 149
 150         sndbuf[0] = 0x20;
 151         sndbuf[1] = 0x00;
 152         sndbuf[2] = len;
 153         sndbuf[3] = 0x00;
 154         sndbuf[4] = 0x00;
 155         sndbuf[5] = flags;
 156         sndbuf[6] = 0x02;
 157
 158         DEBUGP("%u [%s]: ", len, rfid_hexdump(bytes, len));
 159
 160         memcpy(sndbuf+7, bytes, len);
 161
 162         if (PC_to_RDR_Escape(rath->data, sndbuf, len+7, recvbuf, &retlen) == 0) {
 163                 DEBUGPC("OK (%u [%s])\n", retlen, rfid_hexdump(recvbuf, retlen));
 164                 return 0;
 165         }
 166
 167         DEBUGPC("ERROR\n");
 168         return -1;
 169 }
 170
 171 #if 0
 172 static int TestFIFO(struct rc632_handle *handle)
 173 {
 174         unsigned char sndbuf[60]; // 0x3c
 175
 176         // FIXME: repne stosd, call
 177
 178         memset(sndbuf, 0, sizeof(sndbuf));
 179
 180         if (WriteNBytesToFIFO(handle, sizeof(sndbuf), sndbuf, 0) < 0)
 181                 return -1;
 182
 183         return ReadNBytesFromFIFO(handle, sizeof(sndbuf), sndbuf);
 184 }
 185 #endif
 186
 187 static int cm5121_transcieve(struct rfid_reader_handle *rh,
 188                              enum rfid_frametype frametype,
 189                              const unsigned char *tx_data, unsigned int tx_len,
 190                              unsigned char *rx_data, unsigned int *rx_len,
 191                              u_int64_t timeout, unsigned int flags)
 192 {
 193         return rh->ah->asic->priv.rc632.fn.transcieve(rh->ah, frametype,
 194                                                 tx_data, tx_len, rx_data,
 195                                                 rx_len, timeout, flags);
 196 }
 197
 198 static int cm5121_transcieve_sf(struct rfid_reader_handle *rh,
 199                                unsigned char cmd, struct iso14443a_atqa *atqa)
 200 {
 201         return rh->ah->asic->priv.rc632.fn.iso14443a.transcieve_sf(rh->ah,
 202                                                                    cmd,
 203                                                                    atqa);
 204 }
 205
 206 static int
 207 cm5121_transcieve_acf(struct rfid_reader_handle *rh,
 208                       struct iso14443a_anticol_cmd *cmd,
 209                       unsigned int *bit_of_col)
 210 {
 211         return rh->ah->asic->priv.rc632.fn.iso14443a.transcieve_acf(rh->ah,
 212                                                          cmd, bit_of_col);
 213 }
 214
 215 static int
 216 cm5121_14443a_init(struct rfid_reader_handle *rh)
 217 {
 218         return rh->ah->asic->priv.rc632.fn.iso14443a.init(rh->ah);
 219 }
 220
 221 static int
 222 cm5121_14443a_set_speed(struct rfid_reader_handle *rh, unsigned int speed)
 223 {
 224         u_int8_t rate;
 225
 226         switch (speed) {
 227         case RFID_14443A_SPEED_106K:
 228                 rate = RC632_CDRCTRL_RATE_106K;
 229                 break;
 230         case RFID_14443A_SPEED_212K:
 231                 rate = RC632_CDRCTRL_RATE_212K;
 232                 break;
 233         case RFID_14443A_SPEED_424K:
 234                 rate = RC632_CDRCTRL_RATE_424K;
 235                 break;
 236         case RFID_14443A_SPEED_848K:
 237                 rate = RC632_CDRCTRL_RATE_848K;
 238                 break;
 239         default:
 240                 return -EINVAL;
 241                 break;
 242         }
 243         return rh->ah->asic->priv.rc632.fn.iso14443a.set_speed(rh->ah, rate);
 244 }
 245
 246 static int
 247 cm5121_14443b_init(struct rfid_reader_handle *rh)
 248 {
 249         return rh->ah->asic->priv.rc632.fn.iso14443b.init(rh->ah);
 250 }
 251
 252 static int
 253 cm5121_15693_init(struct rfid_reader_handle *rh)
 254 {
 255         return rh->ah->asic->priv.rc632.fn.iso15693.init(rh->ah);
 256 }
 257
 258 static int
 259 cm5121_mifare_setkey(struct rfid_reader_handle *rh, const u_int8_t *key)
 260 {
 261         return rh->ah->asic->priv.rc632.fn.mifare_classic.setkey(rh->ah, key);
 262 }
 263
 264 static int
 265 cm5121_mifare_auth(struct rfid_reader_handle *rh, u_int8_t cmd,
 266                    u_int32_t serno, u_int8_t block)
 267 {
 268         return rh->ah->asic->priv.rc632.fn.mifare_classic.auth(rh->ah,
 269                                                         cmd, serno, block);
 270 }
 271
 272 struct rfid_asic_transport cm5121_ccid = {
 273         .name = "CM5121 OpenCT",
 274         .priv.rc632 = {
 275                 .fn = {
 276                         .reg_write      = &Write1ByteToReg,
 277                         .reg_read       = &Read1ByteFromReg,
 278                         .fifo_write     = &WriteNBytesToFIFO,
 279                         .fifo_read      = &ReadNBytesFromFIFO,
 280                 },
 281         },
 282 };
 283
 284 static int cm5121_enable_rc632(struct rfid_asic_transport_handle *rath)
 285 {
 286         unsigned char tx_buf[1] = { 0x01 };
 287         unsigned char rx_buf[64];
 288         unsigned int rx_len = sizeof(rx_buf);
 289
 290         PC_to_RDR_Escape(rath->data, tx_buf, 1, rx_buf, &rx_len);
 291         printf("received %u bytes from 01 command\n", rx_len);
 292
 293         return 0;
 294 }
 295
 296 static struct rfid_reader_handle *
 297 cm5121_open(void *data)
 298 {
 299         struct rfid_reader_handle *rh;
 300         struct rfid_asic_transport_handle *rath;
 301
 302         rh = malloc(sizeof(*rh));
 303         if (!rh)
 304                 return NULL;
 305         memset(rh, 0, sizeof(*rh));
 306
 307         rath = malloc(sizeof(*rath));
 308         if (!rath)
 309                 goto out_rh;
 310         memset(rath, 0, sizeof(*rath));
 311
 312         rath->rat = &cm5121_ccid;
 313         rh->reader = &rfid_reader_cm5121;
 314
 315         if (cm5121_source_init(rath) < 0)
 316                 goto out_rath;
 317
 318         if (cm5121_enable_rc632(rath) < 0)
 319                 goto out_rath;
 320
 321         rh->ah = rc632_open(rath);
 322         if (!rh->ah)
 323                 goto out_rath;
 324
 325         DEBUGP("returning %p\n", rh);
 326         return rh;
 327
 328 out_rath:
 329         free(rath);
 330 out_rh:
 331         free(rh);
 332
 333         return NULL;
 334 }
 335
 336 static void
 337 cm5121_close(struct rfid_reader_handle *rh)
 338 {
 339         struct rfid_asic_transport_handle *rath = rh->ah->rath;
 340         rc632_close(rh->ah);
 341         free(rath);
 342         free(rh);
 343 }
 344
 345 struct rfid_reader rfid_reader_cm5121 = {
 346         .name   = "Omnikey CardMan 5121 RFID",
 347         .open = &cm5121_open,
 348         .close = &cm5121_close,
 349         .transcieve = &cm5121_transcieve,
 350         .iso14443a = {
 351                 .init = &cm5121_14443a_init,
 352                 .transcieve_sf = &cm5121_transcieve_sf,
 353                 .transcieve_acf = &cm5121_transcieve_acf,
 354                 .speed = RFID_14443A_SPEED_106K | RFID_14443A_SPEED_212K |
 355                          RFID_14443A_SPEED_424K | RFID_14443A_SPEED_848K,
 356                 .set_speed = &cm5121_14443a_set_speed,
 357         },
 358         .iso14443b = {
 359                 .init = &cm5121_14443b_init,
 360         },
 361         .mifare_classic = {
 362                 .setkey = &cm5121_mifare_setkey,
 363                 .auth = &cm5121_mifare_auth,
 364         },
 365 };
 366
 367