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dd0638d2
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(no author)
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/* Generic Philips CL RC632 Routines
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32985a29
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laforge
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* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
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dd0638d2
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(no author)
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*
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* This program is free software; you can redistribute it and/or modify
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32985a29
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laforge
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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dd0638d2
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(no author)
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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32985a29
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laforge
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*
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caf50003
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(no author)
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*/
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9e6368f1
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laforge
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#ifdef DEBUG
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#undef DEBUG
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#endif
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32985a29
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laforge
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5ab655eb
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(no author)
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#include <sys/types.h>
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#include <string.h>
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#include <errno.h>
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#include <cl_rc632.h>
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#include "rc632.h"
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520784c7
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(no author)
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#include <os/dbgu.h>
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9d0d7022
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(no author)
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#include <librfid/rfid_layer2_iso14443a.h>
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#include <librfid/rfid_protocol_mifare_classic.h>
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5ab655eb
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(no author)
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/* initially we use the same values as cm5121 */
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#define OPENPCD_CW_CONDUCTANCE 0x3f
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#define OPENPCD_MOD_CONDUCTANCE 0x3f
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#define OPENPCD_14443A_BITPHASE 0xa9
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#define OPENPCD_14443A_THRESHOLD 0xff
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#define OPENPCD_14443B_BITPHASE 0xad
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#define OPENPCD_14443B_THRESHOLD 0xff
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dd0638d2
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(no author)
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#define RC632_TMO_AUTH1 14000
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1bf580a0
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(no author)
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#define RC632_TIMEOUT_FUZZ_FACTOR 10
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#define USE_IRQ
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dd0638d2
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(no author)
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#define ENTER() DEBUGPCRF("entering")
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struct rfid_asic rc632;
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static int
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rc632_set_bit_mask(struct rfid_asic_handle *handle,
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373c172a
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Harald Welte
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uint8_t reg, uint8_t mask, uint8_t val)
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dd0638d2
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(no author)
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{
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int ret;
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373c172a
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Harald Welte
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uint8_t tmp;
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dd0638d2
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(no author)
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28eb4a57
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laforge
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ret = opcd_rc632_reg_read(handle, reg, &tmp);
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dd0638d2
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(no author)
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if (ret < 0)
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return ret;
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/* if bits are already like we want them, abort */
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if ((tmp & mask) == val)
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return 0;
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28eb4a57
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laforge
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return opcd_rc632_reg_write(handle, reg, (tmp & ~mask)|(val & mask));
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dd0638d2
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(no author)
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}
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952042d2
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(no author)
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int
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dd0638d2
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(no author)
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rc632_turn_on_rf(struct rfid_asic_handle *handle)
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{
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ENTER();
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28eb4a57
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laforge
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return opcd_rc632_set_bits(handle, RC632_REG_TX_CONTROL, 0x03);
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dd0638d2
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(no author)
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}
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952042d2
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(no author)
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int
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dd0638d2
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(no author)
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rc632_turn_off_rf(struct rfid_asic_handle *handle)
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{
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ENTER();
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28eb4a57
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laforge
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return opcd_rc632_clear_bits(handle, RC632_REG_TX_CONTROL, 0x03);
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dd0638d2
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(no author)
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}
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static int
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rc632_power_up(struct rfid_asic_handle *handle)
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{
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ENTER();
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28eb4a57
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laforge
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return opcd_rc632_clear_bits(handle, RC632_REG_CONTROL,
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dd0638d2
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(no author)
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RC632_CONTROL_POWERDOWN);
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}
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static int
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rc632_power_down(struct rfid_asic_handle *handle)
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{
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28eb4a57
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laforge
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return opcd_rc632_set_bits(handle, RC632_REG_CONTROL,
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dd0638d2
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(no author)
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RC632_CONTROL_POWERDOWN);
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f44e839d
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laforge
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}
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#define MAX_WRITE_LEN 16 /* see Sec. 18.6.1.2 of RC632 Spec Rev. 3.2. */
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int
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rc632_write_eeprom(struct rfid_asic_handle *handle,
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373c172a
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Harald Welte
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uint16_t addr, uint8_t len, uint8_t *data)
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f44e839d
|
laforge
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{
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373c172a
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Harald Welte
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uint8_t sndbuf[MAX_WRITE_LEN + 2];
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uint8_t reg;
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f44e839d
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laforge
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int ret;
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if (len > MAX_WRITE_LEN)
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return -EINVAL;
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if (addr < 0x10)
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return -EPERM;
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if (addr > 0x1ff)
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return -EINVAL;
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sndbuf[0] = addr & 0x00ff; /* LSB */
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sndbuf[1] = addr >> 8; /* MSB */
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memcpy(&sndbuf[2], data, len);
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ret = opcd_rc632_fifo_write(handle, len + 2, sndbuf, 0x03);
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if (ret < 0)
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return ret;
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ret = opcd_rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_WRITE_E2);
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if (ret < 0)
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return ret;
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ret = opcd_rc632_reg_read(handle, RC632_REG_ERROR_FLAG, ®);
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if (ret < 0)
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return ret;
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if (reg & RC632_ERR_FLAG_ACCESS_ERR)
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return -EPERM;
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while (1) {
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ret = opcd_rc632_reg_read(handle, RC632_REG_SECONDARY_STATUS, ®);
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if (ret < 0)
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return ret;
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if (reg & RC632_SEC_ST_E2_READY) {
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/* the E2Write command must be terminated, See sec. 18.6.1.3 */
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ret = opcd_rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_IDLE);
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break;
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}
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}
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return ret;
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dd0638d2
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(no author)
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}
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83f2dd8a
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(no author)
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int
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373c172a
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Harald Welte
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rc632_read_eeprom(struct rfid_asic_handle *handle, uint16_t addr, uint8_t len,
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uint8_t *recvbuf)
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| 151 |
dd0638d2
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(no author)
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{
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| 152 |
373c172a
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Harald Welte
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uint8_t sndbuf[3];
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uint8_t err;
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| 154 |
dd0638d2
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(no author)
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int ret;
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83f2dd8a
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(no author)
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sndbuf[0] = (addr & 0xff);
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sndbuf[1] = addr >> 8;
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sndbuf[2] = len;
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dd0638d2
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(no author)
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28eb4a57
|
laforge
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ret = opcd_rc632_fifo_write(handle, 3, sndbuf, 0x03);
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dd0638d2
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(no author)
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if (ret < 0)
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return ret;
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| 164 |
28eb4a57
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laforge
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ret = opcd_rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_READ_E2);
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dd0638d2
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(no author)
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if (ret < 0)
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return ret;
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| 168 |
83f2dd8a
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(no author)
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/* usleep(20000); */
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dd0638d2
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(no author)
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| 170 |
28eb4a57
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laforge
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ret = opcd_rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &err);
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| 171 |
83f2dd8a
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(no author)
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if (err & RC632_ERR_FLAG_ACCESS_ERR)
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return -EPERM;
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| 174 |
28eb4a57
|
laforge
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ret = opcd_rc632_reg_read(handle, RC632_REG_FIFO_LENGTH, &err);
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| 175 |
83f2dd8a
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(no author)
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if (err < len)
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len = err;
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| 178 |
28eb4a57
|
laforge
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ret = opcd_rc632_fifo_read(handle, len, recvbuf);
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| 179 |
dd0638d2
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(no author)
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if (ret < 0)
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return ret;
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| 182 |
83f2dd8a
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(no author)
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return len;
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| 183 |
dd0638d2
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(no author)
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}
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| 185 |
9e6368f1
|
laforge
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#define RC632_E2_PRODUCT_TYPE 0
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#define RC632_E2_PRODUCT_SERIAL 8
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#define RC632_E2_RS_MAX_P 14
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| 189 |
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int rc632_get_serial(struct rfid_asic_handle *handle,
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| 190 |
373c172a
|
Harald Welte
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uint32_t *serial)
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| 191 |
9e6368f1
|
laforge
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{
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| 192 |
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return rc632_read_eeprom(handle, RC632_E2_PRODUCT_SERIAL,
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| 193 |
373c172a
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Harald Welte
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4, (uint8_t *)serial);
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| 194 |
9e6368f1
|
laforge
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}
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