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 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
  41 /* FIXME */
  42 #include "rc632.h"
  43
  44 //#define SENDBUF_LEN   40
  45 #define SENDBUF_LEN     100
  46 #define RECVBUF_LEN     40
  47
  48 static
  49 int Write1ByteToReg(struct rfid_asic_transport_handle *rath,
  50                     unsigned char reg, unsigned char value)
  51 {
  52         unsigned char sndbuf[SENDBUF_LEN];
  53         unsigned char rcvbuf[RECVBUF_LEN];
  54         unsigned int retlen = RECVBUF_LEN;
  55
  56         sndbuf[0] = 0x20;
  57         sndbuf[1] = 0x00;
  58         sndbuf[2] = 0x01;
  59         sndbuf[3] = 0x00;
  60         sndbuf[4] = 0x00;
  61         sndbuf[5] = 0x00;
  62         sndbuf[6] = reg;
  63         sndbuf[7] = value;
  64
  65         DEBUGP("reg=0x%02x, val=%02x: ", reg, value);
  66
  67         if (PC_to_RDR_Escape(rath->data, sndbuf, 8, rcvbuf,
  68                              &retlen) == 0) {
  69                 DEBUGPC("OK\n");
  70                 return 0;
  71         }
  72
  73         DEBUGPC("ERROR\n");
  74         return -1;
  75 }
  76
  77 static int Read1ByteFromReg(struct rfid_asic_transport_handle *rath,
  78                             unsigned char reg,
  79                             unsigned char *value)
  80 {
  81         unsigned char sndbuf[SENDBUF_LEN];
  82         unsigned char recvbuf[RECVBUF_LEN];
  83         unsigned int retlen = sizeof(recvbuf);
  84
  85         sndbuf[0] = 0x20;
  86         sndbuf[1] = 0x00;
  87         sndbuf[2] = 0x00;
  88         sndbuf[3] = 0x00;
  89         sndbuf[4] = 0x01;
  90         sndbuf[5] = 0x00;
  91         sndbuf[6] = reg;
  92
  93         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf,
  94                              &retlen) == 0) {
  95                 *value = recvbuf[1];
  96                 DEBUGP("reg=0x%02x, val=%02x: ", reg, *value);
  97                 DEBUGPC("OK\n");
  98                 return 0;
  99         }
 100
 101         DEBUGPC("ERROR\n");
 102         return -1;
 103 }
 104
 105 static int ReadNBytesFromFIFO(struct rfid_asic_transport_handle *rath,
 106                               unsigned char num_bytes,
 107                               unsigned char *buf)
 108 {
 109         unsigned char sndbuf[SENDBUF_LEN];
 110         unsigned char recvbuf[0x7f];
 111         unsigned int retlen = sizeof(recvbuf);
 112
 113         sndbuf[0] = 0x20;
 114         sndbuf[1] = 0x00;
 115         sndbuf[2] = 0x00;
 116         sndbuf[3] = 0x00;
 117         sndbuf[4] = num_bytes;
 118         sndbuf[5] = 0x00;
 119         sndbuf[6] = 0x02;
 120
 121         DEBUGP("num_bytes=%u: ", num_bytes);
 122         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf, &retlen) == 0) {
 123                 DEBUGPC("%u [%s]\n", retlen,
 124                         rfid_hexdump(recvbuf+1, num_bytes));
 125                 memcpy(buf, recvbuf+1, num_bytes); // len == 0x7f
 126                 return 0;
 127         }
 128
 129         DEBUGPC("ERROR\n");
 130         return -1;
 131 }
 132
 133 static int WriteNBytesToFIFO(struct rfid_asic_transport_handle *rath,
 134                              unsigned char len,
 135                              const unsigned char *bytes,
 136                              unsigned char flags)
 137 {
 138         unsigned char sndbuf[SENDBUF_LEN];
 139         unsigned char recvbuf[0x7f];
 140         unsigned int retlen = sizeof(recvbuf);
 141
 142         sndbuf[0] = 0x20;
 143         sndbuf[1] = 0x00;
 144         sndbuf[2] = len;
 145         sndbuf[3] = 0x00;
 146         sndbuf[4] = 0x00;
 147         sndbuf[5] = flags;
 148         sndbuf[6] = 0x02;
 149
 150         DEBUGP("%u [%s]: ", len, rfid_hexdump(bytes, len));
 151
 152         memcpy(sndbuf+7, bytes, len);
 153
 154         if (PC_to_RDR_Escape(rath->data, sndbuf, len+7, recvbuf, &retlen) == 0) {
 155                 DEBUGPC("OK (%u [%s])\n", retlen, rfid_hexdump(recvbuf, retlen));
 156                 return 0;
 157         }
 158
 159         DEBUGPC("ERROR\n");
 160         return -1;
 161 }
 162
 163 #if 0
 164 static int TestFIFO(struct rc632_handle *handle)
 165 {
 166         unsigned char sndbuf[60]; // 0x3c
 167
 168         // FIXME: repne stosd, call
 169
 170         memset(sndbuf, 0, sizeof(sndbuf));
 171
 172         if (WriteNBytesToFIFO(handle, sizeof(sndbuf), sndbuf, 0) < 0)
 173                 return -1;
 174
 175         return ReadNBytesFromFIFO(handle, sizeof(sndbuf), sndbuf);
 176 }
 177 #endif
 178
 179 static int cm5121_transcieve(struct rfid_reader_handle *rh,
 180                              enum rfid_frametype frametype,
 181                              const unsigned char *tx_data, unsigned int tx_len,
 182                              unsigned char *rx_data, unsigned int *rx_len,
 183                              u_int64_t timeout, unsigned int flags)
 184 {
 185         return rh->ah->asic->priv.rc632.fn.transcieve(rh->ah, frametype,
 186                                                 tx_data, tx_len, rx_data,
 187                                                 rx_len, timeout, flags);
 188 }
 189
 190 static int cm5121_transcieve_sf(struct rfid_reader_handle *rh,
 191                                unsigned char cmd, struct iso14443a_atqa *atqa)
 192 {
 193         return rh->ah->asic->priv.rc632.fn.iso14443a.transcieve_sf(rh->ah,
 194                                                                    cmd,
 195                                                                    atqa);
 196 }
 197
 198 static int
 199 cm5121_transcieve_acf(struct rfid_reader_handle *rh,
 200                       struct iso14443a_anticol_cmd *cmd,
 201                       unsigned int *bit_of_col)
 202 {
 203         return rh->ah->asic->priv.rc632.fn.iso14443a.transcieve_acf(rh->ah,
 204                                                          cmd, bit_of_col);
 205 }
 206
 207 static int
 208 cm5121_14443a_init(struct rfid_reader_handle *rh)
 209 {
 210         return rh->ah->asic->priv.rc632.fn.iso14443a.init(rh->ah);
 211 }
 212
 213 static int
 214 cm5121_14443a_set_speed(struct rfid_reader_handle *rh,
 215                         unsigned int tx,
 216                         unsigned int speed)
 217 {
 218         u_int8_t rate;
 219
 220         DEBUGP("setting rate: ");
 221         switch (speed) {
 222         case RFID_14443A_SPEED_106K:
 223                 rate = 0x00;
 224                 DEBUGPC("106K\n");
 225                 break;
 226         case RFID_14443A_SPEED_212K:
 227                 rate = 0x01;
 228                 DEBUGPC("212K\n");
 229                 break;
 230         case RFID_14443A_SPEED_424K:
 231                 rate = 0x02;
 232                 DEBUGPC("424K\n");
 233                 break;
 234         case RFID_14443A_SPEED_848K:
 235                 rate = 0x03;
 236                 DEBUGPC("848K\n");
 237                 break;
 238         default:
 239                 return -EINVAL;
 240                 break;
 241         }
 242         return rh->ah->asic->priv.rc632.fn.iso14443a.set_speed(rh->ah,
 243                                                                 tx, 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