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

   1 /* Omnikey CardMan 5121 specific RC632 transport layer
   2  *
   3  * (C) 2005-2006 by Harald Welte <laforge@gnumonks.org>
   4  *
   5  * The 5121 is an Atmel AT89C5122 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 <librfid/rfid.h>
  36 #include <librfid/rfid_reader.h>
  37 #include <librfid/rfid_asic.h>
  38 #include <librfid/rfid_asic_rc632.h>
  39 #include <librfid/rfid_reader_cm5121.h>
  40 #include <librfid/rfid_layer2.h>
  41 #include <librfid/rfid_protocol.h>
  42
  43 #include "cm5121_source.h"
  44
  45 /* FIXME */
  46 #include "rc632.h"
  47
  48 #define SENDBUF_LEN     256+7+10 /* 256bytes max FSD/FSC, plus 7 bytes header,
  49                                     plus 10 bytes reserve */
  50 #define RECVBUF_LEN     SENDBUF_LEN
  51
  52 //#define DEBUG_REGISTER
  53
  54 #ifdef DEBUG_REGISTER
  55 #define DEBUGRC DEBUGPC
  56 #define DEBUGR DEBUGP
  57 #else
  58 #define DEBUGRC(x, args ...)    do {} while(0)
  59 #define DEBUGR(x, args ...)     do {} while(0)
  60 #endif
  61
  62 static
  63 int Write1ByteToReg(struct rfid_asic_transport_handle *rath,
  64                     unsigned char reg, unsigned char value)
  65 {
  66         unsigned char sndbuf[SENDBUF_LEN];
  67         unsigned char rcvbuf[RECVBUF_LEN];
  68         unsigned int retlen = RECVBUF_LEN;
  69
  70         sndbuf[0] = 0x20;
  71         sndbuf[1] = 0x00;
  72         sndbuf[2] = 0x01;
  73         sndbuf[3] = 0x00;
  74         sndbuf[4] = 0x00;
  75         sndbuf[5] = 0x00;
  76         sndbuf[6] = reg;
  77         sndbuf[7] = value;
  78
  79         DEBUGR("reg=0x%02x, val=%02x: ", reg, value);
  80
  81         if (PC_to_RDR_Escape(rath->data, sndbuf, 8, rcvbuf,
  82                              &retlen) == 0) {
  83                 DEBUGRC("OK\n");
  84                 return 0;
  85         }
  86
  87         DEBUGRC("ERROR\n");
  88         return -1;
  89 }
  90
  91 static int Read1ByteFromReg(struct rfid_asic_transport_handle *rath,
  92                             unsigned char reg,
  93                             unsigned char *value)
  94 {
  95         unsigned char sndbuf[SENDBUF_LEN];
  96         unsigned char recvbuf[RECVBUF_LEN];
  97         unsigned int retlen = sizeof(recvbuf);
  98
  99         sndbuf[0] = 0x20;
 100         sndbuf[1] = 0x00;
 101         sndbuf[2] = 0x00;
 102         sndbuf[3] = 0x00;
 103         sndbuf[4] = 0x01;
 104         sndbuf[5] = 0x00;
 105         sndbuf[6] = reg;
 106
 107         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf,
 108                              &retlen) == 0) {
 109                 *value = recvbuf[1];
 110                 DEBUGR("reg=0x%02x, val=%02x: ", reg, *value);
 111                 DEBUGRC("OK\n");
 112                 return 0;
 113         }
 114
 115         DEBUGRC("ERROR\n");
 116         return -1;
 117 }
 118
 119 static int ReadNBytesFromFIFO(struct rfid_asic_transport_handle *rath,
 120                               unsigned char num_bytes,
 121                               unsigned char *buf)
 122 {
 123         unsigned char sndbuf[SENDBUF_LEN];
 124         unsigned char recvbuf[0x7f];
 125         unsigned int retlen = sizeof(recvbuf);
 126
 127         sndbuf[0] = 0x20;
 128         sndbuf[1] = 0x00;
 129         sndbuf[2] = 0x00;
 130         sndbuf[3] = 0x00;
 131         sndbuf[4] = num_bytes;
 132         sndbuf[5] = 0x00;
 133         sndbuf[6] = 0x02;
 134
 135         DEBUGR("num_bytes=%u: ", num_bytes);
 136         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf, &retlen) == 0) {
 137                 DEBUGRC("%u [%s]\n", retlen,
 138                         rfid_hexdump(recvbuf+1, num_bytes));
 139                 memcpy(buf, recvbuf+1, num_bytes); // len == 0x7f
 140                 return 0;
 141         }
 142
 143         DEBUGRC("ERROR\n");
 144         return -1;
 145 }
 146
 147 static int WriteNBytesToFIFO(struct rfid_asic_transport_handle *rath,
 148                              unsigned char len,
 149                              const unsigned char *bytes,
 150                              unsigned char flags)
 151 {
 152         unsigned char sndbuf[SENDBUF_LEN];
 153         unsigned char recvbuf[0x7f];
 154         unsigned int retlen = sizeof(recvbuf);
 155
 156         sndbuf[0] = 0x20;
 157         sndbuf[1] = 0x00;
 158         sndbuf[2] = len;
 159         sndbuf[3] = 0x00;
 160         sndbuf[4] = 0x00;
 161         sndbuf[5] = flags;
 162         sndbuf[6] = 0x02;
 163
 164         DEBUGR("%u [%s]: ", len, rfid_hexdump(bytes, len));
 165
 166         memcpy(sndbuf+7, bytes, len);
 167
 168         if (PC_to_RDR_Escape(rath->data, sndbuf, len+7, recvbuf, &retlen) == 0) {
 169                 DEBUGRC("OK (%u [%s])\n", retlen, rfid_hexdump(recvbuf, retlen));
 170                 return 0;
 171         }
 172
 173         DEBUGRC("ERROR\n");
 174         return -1;
 175 }
 176
 177 #if 0
 178 static int TestFIFO(struct rc632_handle *handle)
 179 {
 180         unsigned char sndbuf[60]; // 0x3c
 181
 182         // FIXME: repne stosd, call
 183
 184         memset(sndbuf, 0, sizeof(sndbuf));
 185
 186         if (WriteNBytesToFIFO(handle, sizeof(sndbuf), sndbuf, 0) < 0)
 187                 return -1;
 188
 189         return ReadNBytesFromFIFO(handle, sizeof(sndbuf), sndbuf);
 190 }
 191 #endif
 192
 193 static int cm5121_transceive(struct rfid_reader_handle *rh,
 194                              enum rfid_frametype frametype,
 195                              const unsigned char *tx_data, unsigned int tx_len,
 196                              unsigned char *rx_data, unsigned int *rx_len,
 197                              u_int64_t timeout, unsigned int flags)
 198 {
 199         return rh->ah->asic->priv.rc632.fn.transceive(rh->ah, frametype,
 200                                                 tx_data, tx_len, rx_data,
 201                                                 rx_len, timeout, flags);
 202 }
 203
 204 static int cm5121_transceive_sf(struct rfid_reader_handle *rh,
 205                                unsigned char cmd, struct iso14443a_atqa *atqa)
 206 {
 207         return rh->ah->asic->priv.rc632.fn.iso14443a.transceive_sf(rh->ah,
 208                                                                    cmd,
 209                                                                    atqa);
 210 }
 211
 212 static int
 213 cm5121_transceive_acf(struct rfid_reader_handle *rh,
 214                       struct iso14443a_anticol_cmd *cmd,
 215                       unsigned int *bit_of_col)
 216 {
 217         return rh->ah->asic->priv.rc632.fn.iso14443a.transceive_acf(rh->ah,
 218                                                          cmd, bit_of_col);
 219 }
 220
 221 static int
 222 cm5121_14443a_init(struct rfid_reader_handle *rh)
 223 {
 224         return rh->ah->asic->priv.rc632.fn.iso14443a.init(rh->ah);
 225 }
 226
 227 static int
 228 cm5121_14443a_set_speed(struct rfid_reader_handle *rh,
 229                         unsigned int tx,
 230                         unsigned int speed)
 231 {
 232         u_int8_t rate;
 233
 234         DEBUGP("setting rate: ");
 235         switch (speed) {
 236         case RFID_14443A_SPEED_106K:
 237                 rate = 0x00;
 238                 DEBUGPC("106K\n");
 239                 break;
 240         case RFID_14443A_SPEED_212K:
 241                 rate = 0x01;
 242                 DEBUGPC("212K\n");
 243                 break;
 244         case RFID_14443A_SPEED_424K:
 245                 rate = 0x02;
 246                 DEBUGPC("424K\n");
 247                 break;
 248         case RFID_14443A_SPEED_848K:
 249                 rate = 0x03;
 250                 DEBUGPC("848K\n");
 251                 break;
 252         default:
 253                 DEBUGPC("invalid\n");
 254                 return -EINVAL;
 255                 break;
 256         }
 257         return rh->ah->asic->priv.rc632.fn.iso14443a.set_speed(rh->ah,
 258                                                                 tx, rate);
 259 }
 260
 261 static int
 262 cm5121_14443b_init(struct rfid_reader_handle *rh)
 263 {
 264         return rh->ah->asic->priv.rc632.fn.iso14443b.init(rh->ah);
 265 }
 266
 267 static int
 268 cm5121_15693_init(struct rfid_reader_handle *rh)
 269 {
 270         return rh->ah->asic->priv.rc632.fn.iso15693.init(rh->ah);
 271 }
 272
 273 static int
 274 cm5121_mifare_setkey(struct rfid_reader_handle *rh, const u_int8_t *key)
 275 {
 276         return rh->ah->asic->priv.rc632.fn.mifare_classic.setkey(rh->ah, key);
 277 }
 278
 279 static int
 280 cm5121_mifare_auth(struct rfid_reader_handle *rh, u_int8_t cmd,
 281                    u_int32_t serno, u_int8_t block)
 282 {
 283         return rh->ah->asic->priv.rc632.fn.mifare_classic.auth(rh->ah,
 284                                                         cmd, serno, block);
 285 }
 286
 287 struct rfid_asic_transport cm5121_ccid = {
 288         .name = "CM5121 OpenCT",
 289         .priv.rc632 = {
 290                 .fn = {
 291                         .reg_write      = &Write1ByteToReg,
 292                         .reg_read       = &Read1ByteFromReg,
 293                         .fifo_write     = &WriteNBytesToFIFO,
 294                         .fifo_read      = &ReadNBytesFromFIFO,
 295                 },
 296         },
 297 };
 298
 299 static int cm5121_enable_rc632(struct rfid_asic_transport_handle *rath)
 300 {
 301         unsigned char tx_buf[1] = { 0x01 };
 302         unsigned char rx_buf[64];
 303         unsigned int rx_len = sizeof(rx_buf);
 304
 305         PC_to_RDR_Escape(rath->data, tx_buf, 1, rx_buf, &rx_len);
 306         printf("received %u bytes from 01 command\n", rx_len);
 307
 308         return 0;
 309 }
 310
 311 static struct rfid_reader_handle *
 312 cm5121_open(void *data)
 313 {
 314         struct rfid_reader_handle *rh;
 315         struct rfid_asic_transport_handle *rath;
 316
 317         rh = malloc(sizeof(*rh));
 318         if (!rh)
 319                 return NULL;
 320         memset(rh, 0, sizeof(*rh));
 321
 322         rath = malloc(sizeof(*rath));
 323         if (!rath)
 324                 goto out_rh;
 325         memset(rath, 0, sizeof(*rath));
 326
 327         rath->rat = &cm5121_ccid;
 328         rh->reader = &rfid_reader_cm5121;
 329
 330         if (cm5121_source_init(rath) < 0)
 331                 goto out_rath;
 332
 333         if (cm5121_enable_rc632(rath) < 0)
 334                 goto out_rath;
 335
 336         rh->ah = rc632_open(rath);
 337         if (!rh->ah)
 338                 goto out_rath;
 339
 340         DEBUGP("returning %p\n", rh);
 341         return rh;
 342
 343 out_rath:
 344         free(rath);
 345 out_rh:
 346         free(rh);
 347
 348         return NULL;
 349 }
 350
 351 static void
 352 cm5121_close(struct rfid_reader_handle *rh)
 353 {
 354         struct rfid_asic_transport_handle *rath = rh->ah->rath;
 355         rc632_close(rh->ah);
 356         free(rath);
 357         free(rh);
 358 }
 359
 360 struct rfid_reader rfid_reader_cm5121 = {
 361         .name   = "Omnikey CardMan 5121 RFID",
 362         .open = &cm5121_open,
 363         .close = &cm5121_close,
 364         .transceive = &cm5121_transceive,
 365         .l2_supported = (1 << RFID_LAYER2_ISO14443A) |
 366                         (1 << RFID_LAYER2_ISO14443B) |
 367                         (1 << RFID_LAYER2_ISO15693),
 368         .proto_supported = (1 << RFID_PROTOCOL_TCL) |
 369                         (1 << RFID_PROTOCOL_MIFARE_UL) |
 370                         (1 << RFID_PROTOCOL_MIFARE_CLASSIC),
 371         .iso14443a = {
 372                 .init = &cm5121_14443a_init,
 373                 .transceive_sf = &cm5121_transceive_sf,
 374                 .transceive_acf = &cm5121_transceive_acf,
 375                 .speed = RFID_14443A_SPEED_106K | RFID_14443A_SPEED_212K |
 376                          RFID_14443A_SPEED_424K, //| RFID_14443A_SPEED_848K,
 377                 .set_speed = &cm5121_14443a_set_speed,
 378         },
 379         .iso14443b = {
 380                 .init = &cm5121_14443b_init,
 381         },
 382         .mifare_classic = {
 383                 .setkey = &cm5121_mifare_setkey,
 384                 .auth = &cm5121_mifare_auth,
 385         },
 386 };
 387
 388