git.rot13.org Git - librfid/blob - 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
  34 #include <rfid/rfid.h>
  35 #include <rfid/rfid_reader.h>
  36 #include <rfid/rfid_asic.h>
  37 #include <rfid/rfid_asic_rc632.h>
  38 #include <rfid/rfid_reader_cm5121.h>
  39
  40 #define SENDBUF_LEN     40
  41 #define RECVBUF_LEN     40
  42
  43 #if 0
  44 #ifdef DEBUGP
  45 #undef DEBUGP
  46 #define DEBUGP(x, ...)
  47 #define DEBUGPC(x, ...)
  48 #endif
  49 #endif
  50
  51 static
  52 int Write1ByteToReg(struct rfid_asic_transport_handle *rath,
  53                     unsigned char reg, unsigned char value)
  54 {
  55         unsigned char sndbuf[SENDBUF_LEN];
  56         unsigned char rcvbuf[RECVBUF_LEN];
  57         unsigned int retlen = RECVBUF_LEN;
  58
  59         sndbuf[0] = 0x20;
  60         sndbuf[1] = 0x00;
  61         sndbuf[2] = 0x01;
  62         sndbuf[3] = 0x00;
  63         sndbuf[4] = 0x00;
  64         sndbuf[5] = 0x00;
  65         sndbuf[6] = reg;
  66         sndbuf[7] = value;
  67
  68         DEBUGP("reg=0x%02x, val=%02x: ", reg, value);
  69
  70         if (PC_to_RDR_Escape(rath->data, sndbuf, 8, rcvbuf,
  71                              &retlen) == 0) {
  72                 DEBUGPC("OK\n");
  73                 return 0;
  74         }
  75
  76         DEBUGPC("ERROR\n");
  77         return -1;
  78 }
  79
  80 static int Read1ByteFromReg(struct rfid_asic_transport_handle *rath,
  81                             unsigned char reg,
  82                             unsigned char *value)
  83 {
  84         unsigned char sndbuf[SENDBUF_LEN];
  85         unsigned char recvbuf[RECVBUF_LEN];
  86         unsigned int retlen = sizeof(recvbuf);
  87
  88         sndbuf[0] = 0x20;
  89         sndbuf[1] = 0x00;
  90         sndbuf[2] = 0x00;
  91         sndbuf[3] = 0x00;
  92         sndbuf[4] = 0x01;
  93         sndbuf[5] = 0x00;
  94         sndbuf[6] = reg;
  95
  96         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf,
  97                              &retlen) == 0) {
  98                 *value = recvbuf[1];
  99                 DEBUGP("reg=0x%02x, val=%02x: ", reg, *value);
 100                 DEBUGPC("OK\n");
 101                 return 0;
 102         }
 103
 104         DEBUGPC("ERROR\n");
 105         return -1;
 106 }
 107
 108 static int ReadNBytesFromFIFO(struct rfid_asic_transport_handle *rath,
 109                               unsigned char num_bytes,
 110                               unsigned char *buf)
 111 {
 112         unsigned char sndbuf[SENDBUF_LEN];
 113         unsigned char recvbuf[0x7f];
 114         unsigned int retlen = sizeof(recvbuf);
 115
 116         sndbuf[0] = 0x20;
 117         sndbuf[1] = 0x00;
 118         sndbuf[2] = 0x00;
 119         sndbuf[3] = 0x00;
 120         sndbuf[4] = num_bytes;
 121         sndbuf[5] = 0x00;
 122         sndbuf[6] = 0x02;
 123
 124         DEBUGP("num_bytes=%u: ", num_bytes);
 125         if (PC_to_RDR_Escape(rath->data, sndbuf, 7, recvbuf, &retlen) == 0) {
 126                 DEBUGPC("%u [%s]\n", retlen,
 127                         rfid_hexdump(recvbuf+1, num_bytes));
 128                 memcpy(buf, recvbuf+1, num_bytes); // len == 0x7f
 129                 return 0;
 130         }
 131
 132         DEBUGPC("ERROR\n");
 133         return -1;
 134 }
 135
 136 static int WriteNBytesToFIFO(struct rfid_asic_transport_handle *rath,
 137                              unsigned char len,
 138                              const unsigned char *bytes,
 139                              unsigned char flags)
 140 {
 141         unsigned char sndbuf[SENDBUF_LEN];
 142         unsigned char recvbuf[0x7f];
 143         unsigned int retlen = sizeof(recvbuf);
 144
 145         sndbuf[0] = 0x20;
 146         sndbuf[1] = 0x00;
 147         sndbuf[2] = len;
 148         sndbuf[3] = 0x00;
 149         sndbuf[4] = 0x00;
 150         sndbuf[5] = flags;
 151         sndbuf[6] = 0x02;
 152
 153         DEBUGP("%u [%s]: ", len, rfid_hexdump(bytes, len));
 154
 155         memcpy(sndbuf+7, bytes, len);
 156
 157         if (PC_to_RDR_Escape(rath->data, sndbuf, len+7, recvbuf, &retlen) == 0) {
 158                 DEBUGPC("OK (%u [%s])\n", retlen, rfid_hexdump(recvbuf, retlen));
 159                 return 0;
 160         }
 161
 162         DEBUGPC("ERROR\n");
 163         return -1;
 164 }
 165
 166 #if 0
 167 static int TestFIFO(struct rc632_handle *handle)
 168 {
 169         unsigned char sndbuf[60]; // 0x3c
 170
 171         // FIXME: repne stosd, call
 172
 173         memset(sndbuf, 0, sizeof(sndbuf));
 174
 175         if (WriteNBytesToFIFO(handle, sizeof(sndbuf), sndbuf, 0) < 0)
 176                 return -1;
 177
 178         return ReadNBytesFromFIFO(handle, sizeof(sndbuf), sndbuf);
 179 }
 180 #endif
 181
 182 static int cm5121_transcieve(struct rfid_reader_handle *rh,
 183                              enum rfid_frametype frametype,
 184                              const unsigned char *tx_data, unsigned int tx_len,
 185                              unsigned char *rx_data, unsigned int *rx_len,
 186                              u_int64_t timeout, unsigned int flags)
 187 {
 188         return rh->ah->asic->priv.rc632.fn.transcieve(rh->ah, frametype,
 189                                                 tx_data, tx_len, rx_data,
 190                                                 rx_len, timeout, flags);
 191 }
 192
 193 static int cm5121_transcieve_sf(struct rfid_reader_handle *rh,
 194                                unsigned char cmd, struct iso14443a_atqa *atqa)
 195 {
 196         return rh->ah->asic->priv.rc632.fn.iso14443a.transcieve_sf(rh->ah,
 197                                                                    cmd,
 198                                                                    atqa);
 199 }
 200
 201 static int
 202 cm5121_transcieve_acf(struct rfid_reader_handle *rh,
 203                       struct iso14443a_anticol_cmd *cmd,
 204                       unsigned int *bit_of_col)
 205 {
 206         return rh->ah->asic->priv.rc632.fn.iso14443a.transcieve_acf(rh->ah,
 207                                                          cmd, bit_of_col);
 208 }
 209
 210 static int
 211 cm5121_14443a_init(struct rfid_reader_handle *rh)
 212 {
 213         return rh->ah->asic->priv.rc632.fn.iso14443a.init(rh->ah);
 214 }
 215
 216 static int
 217 cm5121_14443b_init(struct rfid_reader_handle *rh)
 218 {
 219         return rh->ah->asic->priv.rc632.fn.iso14443b.init(rh->ah);
 220 }
 221
 222 static int
 223 cm5121_15693_init(struct rfid_reader_handle *rh)
 224 {
 225         return rh->ah->asic->priv.rc632.fn.iso15693.init(rh->ah);
 226 }
 227
 228 static int
 229 cm5121_mifare_setkey(struct rfid_reader_handle *rh, const u_int8_t *key)
 230 {
 231         return rh->ah->asic->priv.rc632.fn.mifare_classic.setkey(rh->ah, key);
 232 }
 233
 234 static int
 235 cm5121_mifare_auth(struct rfid_reader_handle *rh, u_int8_t cmd,
 236                    u_int32_t serno, u_int8_t block)
 237 {
 238         return rh->ah->asic->priv.rc632.fn.mifare_classic.auth(rh->ah,
 239                                                         cmd, serno, block);
 240 }
 241
 242 struct rfid_asic_transport cm5121_ccid = {
 243         .name = "CM5121 OpenCT",
 244         .priv.rc632 = {
 245                 .fn = {
 246                         .reg_write      = &Write1ByteToReg,
 247                         .reg_read       = &Read1ByteFromReg,
 248                         .fifo_write     = &WriteNBytesToFIFO,
 249                         .fifo_read      = &ReadNBytesFromFIFO,
 250                 },
 251         },
 252 };
 253
 254 static int cm5121_enable_rc632(struct rfid_asic_transport_handle *rath)
 255 {
 256         unsigned char tx_buf[1] = { 0x01 };
 257         unsigned char rx_buf[64];
 258         unsigned int rx_len = sizeof(rx_buf);
 259
 260         PC_to_RDR_Escape(rath->data, tx_buf, 1, rx_buf, &rx_len);
 261         printf("received %u bytes from 01 command\n", rx_len);
 262
 263         return 0;
 264 }
 265
 266 static struct rfid_reader_handle *
 267 cm5121_open(void *data)
 268 {
 269         struct rfid_reader_handle *rh;
 270         struct rfid_asic_transport_handle *rath;
 271
 272         rh = malloc(sizeof(*rh));
 273         if (!rh)
 274                 return NULL;
 275         memset(rh, 0, sizeof(*rh));
 276
 277         rath = malloc(sizeof(*rath));
 278         if (!rath)
 279                 goto out_rh;
 280         memset(rath, 0, sizeof(*rath));
 281
 282         rath->rat = &cm5121_ccid;
 283         rath->data = data;
 284
 285         rh->reader = &rfid_reader_cm5121;
 286
 287         if (cm5121_enable_rc632(rath) < 0)
 288                 goto out_rath;
 289
 290         rh->ah = rc632_open(rath);
 291         if (!rh->ah)
 292                 goto out_rath;
 293
 294         DEBUGP("returning %p\n", rh);
 295         return rh;
 296
 297 out_rath:
 298         free(rath);
 299 out_rh:
 300         free(rh);
 301
 302         return NULL;
 303 }
 304
 305 static void
 306 cm5121_close(struct rfid_reader_handle *rh)
 307 {
 308         struct rfid_asic_transport_handle *rath = rh->ah->rath;
 309         rc632_close(rh->ah);
 310         free(rath);
 311         free(rh);
 312 }
 313
 314 struct rfid_reader rfid_reader_cm5121 = {
 315         .name   = "Omnikey CardMan 5121 RFID",
 316         .open = &cm5121_open,
 317         .close = &cm5121_close,
 318         .transcieve = &cm5121_transcieve,
 319         .iso14443a = {
 320                 .init = &cm5121_14443a_init,
 321                 .transcieve_sf = &cm5121_transcieve_sf,
 322                 .transcieve_acf = &cm5121_transcieve_acf,
 323                 .speed = RFID_READER_SPEED_106K | RFID_READER_SPEED_212K |
 324                          RFID_READER_SPEED_424K | RFID_READER_SPEED_848K,
 325         },
 326         .iso14443b = {
 327                 .init = &cm5121_14443b_init,
 328         },
 329         .mifare_classic = {
 330                 .setkey = &cm5121_mifare_setkey,
 331                 .auth = &cm5121_mifare_auth,
 332         },
 333 };
 334
 335