1474 lines
32 KiB
C
1474 lines
32 KiB
C
/* Generic Philips CL RC632 Routines
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*
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* (C) Harald Welte <laforge@gnumonks.org>
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*
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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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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*/
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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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#include <os/dbgu.h>
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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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/* 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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#define RC632_TMO_AUTH1 14000
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#define RC632_TIMEOUT_FUZZ_FACTOR 10
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#define USE_IRQ
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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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u_int8_t reg, u_int8_t mask, u_int8_t val)
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{
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int ret;
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u_int8_t tmp;
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ret = rc632_reg_read(handle, reg, &tmp);
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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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return rc632_reg_write(handle, reg, (tmp & ~mask)|(val & mask));
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}
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int
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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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return rc632_set_bits(handle, RC632_REG_TX_CONTROL, 0x03);
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}
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int
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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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return rc632_clear_bits(handle, RC632_REG_TX_CONTROL, 0x03);
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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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return rc632_clear_bits(handle, RC632_REG_CONTROL,
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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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return rc632_set_bits(handle, RC632_REG_CONTROL,
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RC632_CONTROL_POWERDOWN);
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}
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/* calculate best 8bit prescaler and divisor for given usec timeout */
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static int best_prescaler(u_int64_t timeout, u_int8_t *prescaler,
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u_int8_t *divisor)
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{
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u_int8_t best_presc, best_divisor, i;
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int64_t smallest_diff;
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smallest_diff = 0x7fffffffffffffff;
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best_presc = 0;
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for (i = 0; i < 21; i++) {
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u_int64_t clk, tmp_div, res;
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int64_t diff;
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clk = 13560000 / (1 << i);
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tmp_div = (clk * timeout) / 1000000;
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tmp_div++;
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if (tmp_div > 0xff)
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continue;
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res = 1000000 / (clk / tmp_div);
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diff = res - timeout;
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if (diff < 0)
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continue;
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if (diff < smallest_diff) {
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best_presc = i;
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best_divisor = tmp_div;
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smallest_diff = diff;
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}
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}
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*prescaler = best_presc;
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*divisor = best_divisor;
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DEBUGPCRF("timeout %u usec, prescaler = %u, divisor = %u", timeout, best_presc, best_divisor);
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return 0;
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}
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static int
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rc632_timer_set(struct rfid_asic_handle *handle,
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u_int64_t timeout)
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{
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int ret;
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u_int8_t prescaler, divisor;
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ret = best_prescaler(timeout*RC632_TIMEOUT_FUZZ_FACTOR,
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&prescaler, &divisor);
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ret = rc632_reg_write(handle, RC632_REG_TIMER_CLOCK,
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prescaler & 0x1f);
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if (ret < 0)
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return ret;
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ret = rc632_reg_write(handle, RC632_REG_TIMER_CONTROL,
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RC632_TMR_START_TX_END|RC632_TMR_STOP_RX_BEGIN);
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/* clear timer irq bit */
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ret |= rc632_set_bits(handle, RC632_REG_INTERRUPT_RQ, RC632_INT_TIMER);
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#ifdef USE_IRQ_
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/* enable interrupt for expired timer */
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ret |= rc632_reg_write(handle, RC632_REG_INTERRUPT_EN,
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RC632_INT_TIMER|RC632_INT_SET);
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#endif
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ret |= rc632_reg_write(handle, RC632_REG_TIMER_RELOAD, divisor);
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return ret;
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}
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/* Wait until RC632 is idle or TIMER IRQ has happened */
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static int rc632_wait_idle_timer(struct rfid_asic_handle *handle)
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{
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int ret;
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u_int8_t irq, cmd;
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while (1) {
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ret = rc632_reg_read(handle, RC632_REG_INTERRUPT_RQ, &irq);
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if (ret < 0)
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return ret;
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/* FIXME: currently we're lazy: If we actually received
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* something even after the timer expired, we accept it */
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if (irq & RC632_INT_TIMER && !(irq & RC632_INT_RX)) {
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u_int8_t foo;
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rc632_reg_read(handle, RC632_REG_PRIMARY_STATUS, &foo);
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DEBUGPCRF("TIMER && !INT_RX, PRIM_STATUS=0x%02x", foo);
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if (foo & 0x04) {
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rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &foo);
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DEBUGPCRF("ERROR_FLAG=0x%02x, returning timeout", foo);
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}
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return -ETIMEDOUT;
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}
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ret = rc632_reg_read(handle, RC632_REG_COMMAND, &cmd);
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if (ret < 0)
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return ret;
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if (cmd == 0 || irq & RC632_INT_RX)
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return 0;
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/* poll every millisecond */
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/* FIXME usleep(1000);*/
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}
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}
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/* Stupid RC632 implementations don't evaluate interrupts but poll the
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* command register for "status idle" */
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static int
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rc632_wait_idle(struct rfid_asic_handle *handle, u_int64_t timeout)
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{
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u_int8_t cmd = 0xff;
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int ret, cycles = 0;
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#define USLEEP_PER_CYCLE 128
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while (cmd != 0) {
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ret = rc632_reg_read(handle, RC632_REG_COMMAND, &cmd);
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if (ret < 0)
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return ret;
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if (cmd == 0) {
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/* FIXME: read second time ?? */
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return 0;
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}
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{
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u_int8_t foo;
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rc632_reg_read(handle, RC632_REG_PRIMARY_STATUS, &foo);
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if (foo & 0x04)
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rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &foo);
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}
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/* Abort after some timeout */
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if (cycles > timeout*RC632_TIMEOUT_FUZZ_FACTOR/USLEEP_PER_CYCLE) {
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return -ETIMEDOUT;
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}
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cycles++;
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usleep(USLEEP_PER_CYCLE);
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}
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return 0;
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}
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static int
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rc632_transmit(struct rfid_asic_handle *handle,
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const u_int8_t *buf,
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u_int8_t len,
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u_int64_t timeout)
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{
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int ret, cur_len;
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const u_int8_t *cur_buf = buf;
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if (len > 64)
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cur_len = 64;
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else
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cur_len = len;
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do {
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ret = rc632_fifo_write(handle, cur_len, cur_buf, 0x03);
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if (ret < 0)
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return ret;
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if (cur_buf == buf) {
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/* only start transmit first time */
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ret = rc632_reg_write(handle, RC632_REG_COMMAND,
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RC632_CMD_TRANSMIT);
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if (ret < 0)
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return ret;
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}
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cur_buf += cur_len;
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if (cur_buf < buf + len) {
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cur_len = buf - cur_buf;
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if (cur_len > 64)
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cur_len = 64;
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} else
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cur_len = 0;
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} while (cur_len);
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return rc632_wait_idle(handle, timeout);
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}
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static int
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tcl_toggle_pcb(struct rfid_asic_handle *handle)
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{
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// FIXME: toggle something between 0x0a and 0x0b
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return 0;
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}
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static int
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rc632_transceive(struct rfid_asic_handle *handle,
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const u_int8_t *tx_buf,
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u_int8_t tx_len,
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u_int8_t *rx_buf,
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u_int8_t *rx_len,
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u_int64_t timer,
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unsigned int toggle)
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{
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int ret, cur_tx_len;
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const u_int8_t *cur_tx_buf = tx_buf;
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DEBUGPCRF("tx_len=%u, rx_len=%u, timer=%llu", tx_len, *rx_len, timer);
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if (tx_len > 64)
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cur_tx_len = 64;
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else
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cur_tx_len = tx_len;
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ret = rc632_reg_write(handle, RC632_REG_COMMAND, 0x00);
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/* clear all interrupts */
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ret = rc632_reg_write(handle, RC632_REG_INTERRUPT_RQ, 0x7f);
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if (ret < 0)
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return ret;
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ret = rc632_timer_set(handle, timer);
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if (ret < 0)
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return ret;
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do {
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ret = rc632_fifo_write(handle, cur_tx_len, cur_tx_buf, 0x03);
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if (ret < 0)
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return ret;
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if (cur_tx_buf == tx_buf) {
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ret = rc632_reg_write(handle, RC632_REG_COMMAND,
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RC632_CMD_TRANSCEIVE);
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if (ret < 0)
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return ret;
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}
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cur_tx_buf += cur_tx_len;
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if (cur_tx_buf < tx_buf + tx_len) {
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u_int8_t fifo_fill;
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ret = rc632_reg_read(handle, RC632_REG_FIFO_LENGTH,
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&fifo_fill);
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if (ret < 0)
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return ret;
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cur_tx_len = 64 - fifo_fill;
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DEBUGPCRF("refilling tx fifo with %u bytes", cur_tx_len);
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} else
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cur_tx_len = 0;
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} while (cur_tx_len);
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if (toggle == 1)
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tcl_toggle_pcb(handle);
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ret = rc632_wait_idle_timer(handle);
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if (ret < 0)
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return ret;
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ret = rc632_reg_read(handle, RC632_REG_FIFO_LENGTH, rx_len);
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if (ret < 0)
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return ret;
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DEBUGPCRF("rx_len = %u\n", *rx_len);
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if (*rx_len == 0) {
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u_int8_t tmp, tmp2;
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rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &tmp);
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rc632_reg_read(handle, RC632_REG_CHANNEL_REDUNDANCY, &tmp2);
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DEBUGPCRF("rx_len == 0, error_flag=0x%02x, channel_red=0x%02x",
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tmp, tmp2);
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return -1;
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}
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return rc632_fifo_read(handle, *rx_len, rx_buf);
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}
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int
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rc632_read_eeprom(struct rfid_asic_handle *handle, u_int16_t addr, u_int8_t len,
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u_int8_t *recvbuf)
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{
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u_int8_t sndbuf[3];
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u_int8_t err;
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int ret;
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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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ret = rc632_fifo_write(handle, 3, sndbuf, 0x03);
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if (ret < 0)
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return ret;
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ret = rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_READ_E2);
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if (ret < 0)
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return ret;
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/* usleep(20000); */
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ret = rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &err);
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if (err & RC632_ERR_FLAG_ACCESS_ERR)
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return -EPERM;
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ret = rc632_reg_read(handle, RC632_REG_FIFO_DATA, &err);
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if (err < len)
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len = err;
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ret = rc632_fifo_read(handle, len, recvbuf);
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if (ret < 0)
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return ret;
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return len;
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}
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static int
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rc632_calc_crc16_from(struct rfid_asic_handle *handle)
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{
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u_int8_t sndbuf[2] = { 0x01, 0x02 };
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u_int8_t crc_lsb = 0x00 , crc_msb = 0x00;
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int ret;
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ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_LSB, 0x12);
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if (ret < 0)
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return ret;
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ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_MSB, 0xe0);
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if (ret < 0)
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return ret;
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ret = rc632_fifo_write(handle, sizeof(sndbuf), sndbuf, 3);
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if (ret < 0)
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return ret;
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ret = rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_CALC_CRC);
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if (ret < 0)
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return ret;
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usleep(10000); // FIXME: no checking for cmd completion?
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ret = rc632_reg_read(handle, RC632_REG_CRC_RESULT_LSB, &crc_lsb);
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if (ret < 0)
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return ret;
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ret = rc632_reg_read(handle, RC632_REG_CRC_RESULT_MSB, &crc_msb);
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if (ret < 0)
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return ret;
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// FIXME: what to do with crc result?
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return ret;
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}
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int
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rc632_register_dump(struct rfid_asic_handle *handle, u_int8_t *buf)
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{
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int ret;
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u_int8_t i;
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for (i = 0; i <= 0x3f; i++) {
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ret = rc632_reg_read(handle, i, &buf[i]);
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// do we want error checks?
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}
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return 0;
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}
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#if 0
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static int
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rc632_init(struct rfid_asic_handle *ah)
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{
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int ret;
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/* switch off rf (make sure PICCs are reset at init time) */
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ret = rc632_power_down(ah);
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if (ret < 0)
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return ret;
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usleep(10000);
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/* switch on rf */
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ret = rc632_power_up(ah);
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if (ret < 0)
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return ret;
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/* disable register paging */
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ret = rc632_reg_write(ah, 0x00, 0x00);
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if (ret < 0)
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return ret;
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/* set some sane default values */
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ret = rc632_reg_write(ah, 0x11, 0x5b);
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if (ret < 0)
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return ret;
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/* switch on rf */
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ret = rc632_turn_on_rf(ah);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int
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rc632_fini(struct rfid_asic_handle *ah)
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{
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int ret;
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/* switch off rf */
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ret = rc632_turn_off_rf(ah);
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if (ret < 0)
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return ret;
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ret = rc632_power_down(ah);
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if (ret < 0)
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return ret;
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return 0;
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}
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#endif
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/*
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* Philips CL RC632 primitives for ISO 14443-A compliant PICC's
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*
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* (C) 2005 by Harald Welte <laforge@gnumonks.org>
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*
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*/
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int
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rc632_iso14443a_init(struct rfid_asic_handle *handle)
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{
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int ret;
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// FIXME: some fifo work (drain fifo?)
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/* flush fifo (our way) */
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ret = rc632_reg_write(handle, RC632_REG_CONTROL, 0x01);
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ret = rc632_reg_write(handle, RC632_REG_TX_CONTROL,
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(RC632_TXCTRL_TX1_RF_EN |
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RC632_TXCTRL_TX2_RF_EN |
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RC632_TXCTRL_TX2_INV |
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RC632_TXCTRL_FORCE_100_ASK |
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RC632_TXCTRL_MOD_SRC_INT));
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if (ret < 0)
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return ret;
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|
|
ret = rc632_reg_write(handle, RC632_REG_CW_CONDUCTANCE,
|
|
OPENPCD_CW_CONDUCTANCE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Since FORCE_100_ASK is set (cf mc073930.pdf), this line may be left out? */
|
|
ret = rc632_reg_write(handle, RC632_REG_MOD_CONDUCTANCE,
|
|
OPENPCD_MOD_CONDUCTANCE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CODER_CONTROL,
|
|
(RC632_CDRCTRL_TXCD_14443A |
|
|
RC632_CDRCTRL_RATE_106K));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_MOD_WIDTH, 0x13);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_MOD_WIDTH_SOF, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_TYPE_B_FRAMING, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_CONTROL1,
|
|
(RC632_RXCTRL1_GAIN_35DB |
|
|
RC632_RXCTRL1_ISO14443 |
|
|
RC632_RXCTRL1_SUBCP_8));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_DECODER_CONTROL,
|
|
(RC632_DECCTRL_MANCHESTER |
|
|
RC632_DECCTRL_RXFR_14443A));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_BIT_PHASE,
|
|
OPENPCD_14443A_BITPHASE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_THRESHOLD,
|
|
OPENPCD_14443A_THRESHOLD);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_BPSK_DEM_CONTROL, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_CONTROL2,
|
|
(RC632_RXCTRL2_DECSRC_INT |
|
|
RC632_RXCTRL2_CLK_Q));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Omnikey proprietary driver has 0x03, but 0x06 is the default reset value ?!? */
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_WAIT, 0x06);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
(RC632_CR_PARITY_ENABLE |
|
|
RC632_CR_PARITY_ODD));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_LSB, 0x63);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_MSB, 0x63);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rc632_iso14443a_fini(struct iso14443a_handle *handle_14443)
|
|
{
|
|
|
|
#if 0
|
|
ret = rc632_turn_off_rf(handle);
|
|
if (ret < 0)
|
|
return ret;
|
|
#endif
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* issue a 14443-3 A PCD -> PICC command in a short frame, such as REQA, WUPA */
|
|
int
|
|
rc632_iso14443a_transceive_sf(struct rfid_asic_handle *handle,
|
|
u_int8_t cmd,
|
|
struct iso14443a_atqa *atqa)
|
|
{
|
|
int ret;
|
|
u_int8_t tx_buf[1];
|
|
u_int8_t rx_len = 2;
|
|
|
|
DEBUGPCRF("");
|
|
memset(atqa, 0, sizeof(atqa));
|
|
|
|
tx_buf[0] = cmd;
|
|
|
|
/* transfer only 7 bits of last byte in frame */
|
|
ret = rc632_reg_write(handle, RC632_REG_BIT_FRAMING, 0x07);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_clear_bits(handle, RC632_REG_CONTROL,
|
|
RC632_CONTROL_CRYPTO1_ON);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
#if 0
|
|
ret = rc632_reg_write(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
(RC632_CR_PARITY_ENABLE |
|
|
RC632_CR_PARITY_ODD));
|
|
#else
|
|
ret = rc632_clear_bits(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
RC632_CR_RX_CRC_ENABLE|RC632_CR_TX_CRC_ENABLE);
|
|
|
|
#endif
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_transceive(handle, tx_buf, sizeof(tx_buf),
|
|
(u_int8_t *)atqa, &rx_len,
|
|
ISO14443A_FDT_ANTICOL_LAST1, 0);
|
|
if (ret < 0) {
|
|
DEBUGPCRF("error during rc632_transceive()");
|
|
return ret;
|
|
}
|
|
|
|
/* switch back to normal 8bit last byte */
|
|
ret = rc632_reg_write(handle, RC632_REG_BIT_FRAMING, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (rx_len != 2) {
|
|
DEBUGPCRF("rx_len(%d) != 2", rx_len);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* transceive regular frame */
|
|
int
|
|
rc632_iso14443ab_transceive(struct rfid_asic_handle *handle,
|
|
unsigned int frametype,
|
|
const u_int8_t *tx_buf, unsigned int tx_len,
|
|
u_int8_t *rx_buf, unsigned int *rx_len,
|
|
u_int64_t timeout, unsigned int flags)
|
|
{
|
|
int ret;
|
|
u_int8_t rxl = *rx_len & 0xff;
|
|
u_int8_t channel_red;
|
|
|
|
DEBUGPCRF("tx_len=%u, rx_len=%u", tx_len, *rx_len);
|
|
|
|
memset(rx_buf, 0, *rx_len);
|
|
|
|
switch (frametype) {
|
|
case RFID_14443A_FRAME_REGULAR:
|
|
case RFID_MIFARE_FRAME:
|
|
channel_red = RC632_CR_RX_CRC_ENABLE|RC632_CR_TX_CRC_ENABLE
|
|
|RC632_CR_PARITY_ENABLE|RC632_CR_PARITY_ODD;
|
|
break;
|
|
case RFID_14443B_FRAME_REGULAR:
|
|
channel_red = RC632_CR_RX_CRC_ENABLE|RC632_CR_TX_CRC_ENABLE
|
|
|RC632_CR_CRC3309;
|
|
break;
|
|
#if 0
|
|
case RFID_MIFARE_FRAME:
|
|
channel_red = RC632_CR_PARITY_ENABLE|RC632_CR_PARITY_ODD;
|
|
break;
|
|
#endif
|
|
default:
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
ret = rc632_reg_write(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
channel_red);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_transceive(handle, tx_buf, tx_len, rx_buf, &rxl, timeout, 0);
|
|
*rx_len = rxl;
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* transceive anti collission bitframe */
|
|
int
|
|
rc632_iso14443a_transceive_acf(struct rfid_asic_handle *handle,
|
|
struct iso14443a_anticol_cmd *acf,
|
|
unsigned int *bit_of_col)
|
|
{
|
|
int ret;
|
|
u_int8_t rx_buf[64];
|
|
u_int8_t rx_len = sizeof(rx_buf);
|
|
u_int8_t rx_align = 0, tx_last_bits, tx_bytes;
|
|
u_int8_t boc;
|
|
u_int8_t error_flag;
|
|
*bit_of_col = ISO14443A_BITOFCOL_NONE;
|
|
memset(rx_buf, 0, sizeof(rx_buf));
|
|
|
|
/* disable mifare cryto */
|
|
ret = rc632_clear_bits(handle, RC632_REG_CONTROL,
|
|
RC632_CONTROL_CRYPTO1_ON);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* disable CRC summing */
|
|
#if 0
|
|
ret = rc632_reg_write(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
(RC632_CR_PARITY_ENABLE |
|
|
RC632_CR_PARITY_ODD));
|
|
#else
|
|
ret = rc632_clear_bits(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
RC632_CR_TX_CRC_ENABLE|RC632_CR_TX_CRC_ENABLE);
|
|
#endif
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
tx_last_bits = acf->nvb & 0x0f; /* lower nibble indicates bits */
|
|
tx_bytes = acf->nvb >> 4;
|
|
if (tx_last_bits) {
|
|
tx_bytes++;
|
|
rx_align = (tx_last_bits+1) % 8;/* rx frame complements tx */
|
|
}
|
|
|
|
//rx_align = 8 - tx_last_bits;/* rx frame complements tx */
|
|
|
|
/* set RxAlign and TxLastBits*/
|
|
ret = rc632_reg_write(handle, RC632_REG_BIT_FRAMING,
|
|
(rx_align << 4) | (tx_last_bits));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_transceive(handle, (u_int8_t *)acf, tx_bytes,
|
|
rx_buf, &rx_len, 0x32, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* bitwise-OR the two halves of the split byte */
|
|
acf->uid_bits[tx_bytes-2] = (
|
|
(acf->uid_bits[tx_bytes-2] & (0xff >> (8-tx_last_bits)))
|
|
| rx_buf[0]);
|
|
/* copy the rest */
|
|
memcpy(&acf->uid_bits[tx_bytes+1-2], &rx_buf[1], rx_len-1);
|
|
|
|
/* determine whether there was a collission */
|
|
ret = rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &error_flag);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (error_flag & RC632_ERR_FLAG_COL_ERR) {
|
|
/* retrieve bit of collission */
|
|
ret = rc632_reg_read(handle, RC632_REG_COLL_POS, &boc);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* bit of collission relative to start of part 1 of
|
|
* anticollision frame (!) */
|
|
*bit_of_col = 2*8 + boc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
enum rc632_rate {
|
|
RC632_RATE_106 = 0x00,
|
|
RC632_RATE_212 = 0x01,
|
|
RC632_RATE_424 = 0x02,
|
|
RC632_RATE_848 = 0x03,
|
|
};
|
|
|
|
struct rx_config {
|
|
u_int8_t subc_pulses;
|
|
u_int8_t rx_coding;
|
|
u_int8_t rx_threshold;
|
|
u_int8_t bpsk_dem_ctrl;
|
|
};
|
|
|
|
struct tx_config {
|
|
u_int8_t rate;
|
|
u_int8_t mod_width;
|
|
};
|
|
|
|
static const struct rx_config rx_configs[] = {
|
|
{
|
|
.subc_pulses = RC632_RXCTRL1_SUBCP_8,
|
|
.rx_coding = RC632_DECCTRL_MANCHESTER,
|
|
.rx_threshold = 0x88,
|
|
.bpsk_dem_ctrl = 0x00,
|
|
},
|
|
{
|
|
.subc_pulses = RC632_RXCTRL1_SUBCP_4,
|
|
.rx_coding = RC632_DECCTRL_BPSK,
|
|
.rx_threshold = 0x50,
|
|
.bpsk_dem_ctrl = 0x0c,
|
|
},
|
|
{
|
|
.subc_pulses = RC632_RXCTRL1_SUBCP_2,
|
|
.rx_coding = RC632_DECCTRL_BPSK,
|
|
.rx_threshold = 0x50,
|
|
.bpsk_dem_ctrl = 0x0c,
|
|
},
|
|
{
|
|
.subc_pulses = RC632_RXCTRL1_SUBCP_1,
|
|
.rx_coding = RC632_DECCTRL_BPSK,
|
|
.rx_threshold = 0x50,
|
|
.bpsk_dem_ctrl = 0x0c,
|
|
},
|
|
};
|
|
|
|
static const struct tx_config tx_configs[] = {
|
|
{
|
|
.rate = RC632_CDRCTRL_RATE_106K,
|
|
.mod_width = 0x13,
|
|
},
|
|
{
|
|
.rate = RC632_CDRCTRL_RATE_212K,
|
|
.mod_width = 0x07,
|
|
},
|
|
{
|
|
.rate = RC632_CDRCTRL_RATE_424K,
|
|
.mod_width = 0x03,
|
|
},
|
|
{
|
|
.rate = RC632_CDRCTRL_RATE_848K,
|
|
.mod_width = 0x01,
|
|
},
|
|
};
|
|
|
|
int rc632_iso14443a_set_speed(struct rfid_asic_handle *handle,
|
|
unsigned int tx,
|
|
u_int8_t rate)
|
|
{
|
|
int rc;
|
|
u_int8_t reg;
|
|
|
|
|
|
if (!tx) {
|
|
/* Rx */
|
|
if (rate > ARRAY_SIZE(rx_configs))
|
|
return -EINVAL;
|
|
|
|
rc = rc632_set_bit_mask(handle, RC632_REG_RX_CONTROL1,
|
|
RC632_RXCTRL1_SUBCP_MASK,
|
|
rx_configs[rate].subc_pulses);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = rc632_set_bit_mask(handle, RC632_REG_DECODER_CONTROL,
|
|
RC632_DECCTRL_BPSK,
|
|
rx_configs[rate].rx_coding);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = rc632_reg_write(handle, RC632_REG_RX_THRESHOLD,
|
|
rx_configs[rate].rx_threshold);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (rx_configs[rate].rx_coding == RC632_DECCTRL_BPSK) {
|
|
rc = rc632_reg_write(handle,
|
|
RC632_REG_BPSK_DEM_CONTROL,
|
|
rx_configs[rate].bpsk_dem_ctrl);
|
|
if (rc < 0)
|
|
return rc;
|
|
}
|
|
} else {
|
|
/* Tx */
|
|
if (rate > ARRAY_SIZE(tx_configs))
|
|
return -EINVAL;
|
|
|
|
rc = rc632_set_bit_mask(handle, RC632_REG_CODER_CONTROL,
|
|
RC632_CDRCTRL_RATE_MASK,
|
|
tx_configs[rate].rate);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
rc = rc632_reg_write(handle, RC632_REG_MOD_WIDTH,
|
|
tx_configs[rate].mod_width);
|
|
if (rc < 0)
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rc632_iso14443b_init(struct rfid_asic_handle *handle)
|
|
{
|
|
int ret;
|
|
|
|
// FIXME: some FIFO work
|
|
|
|
/* flush fifo (our way) */
|
|
ret = rc632_reg_write(handle, RC632_REG_CONTROL, 0x01);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_TX_CONTROL,
|
|
(RC632_TXCTRL_TX1_RF_EN |
|
|
RC632_TXCTRL_TX2_RF_EN |
|
|
RC632_TXCTRL_TX2_INV |
|
|
RC632_TXCTRL_MOD_SRC_INT));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CW_CONDUCTANCE, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_MOD_CONDUCTANCE, 0x04);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CODER_CONTROL,
|
|
(RC632_CDRCTRL_TXCD_NRZ |
|
|
RC632_CDRCTRL_RATE_14443B));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_MOD_WIDTH, 0x13);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_MOD_WIDTH_SOF, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_TYPE_B_FRAMING,
|
|
(RC632_TBFRAMING_SOF_11L_3H |
|
|
(6 << RC632_TBFRAMING_SPACE_SHIFT) |
|
|
RC632_TBFRAMING_EOF_11));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_CONTROL1,
|
|
(RC632_RXCTRL1_GAIN_35DB |
|
|
RC632_RXCTRL1_ISO14443 |
|
|
RC632_RXCTRL1_SUBCP_8));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_DECODER_CONTROL,
|
|
(RC632_DECCTRL_BPSK |
|
|
RC632_DECCTRL_RXFR_14443B));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_BIT_PHASE,
|
|
OPENPCD_14443B_BITPHASE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_THRESHOLD,
|
|
OPENPCD_14443B_THRESHOLD);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_BPSK_DEM_CONTROL,
|
|
((0x2 & RC632_BPSKD_TAUB_MASK)<<RC632_BPSKD_TAUB_SHIFT |
|
|
(0x3 & RC632_BPSKD_TAUD_MASK)<<RC632_BPSKD_TAUD_SHIFT |
|
|
RC632_BPSKD_FILTER_AMP_DETECT |
|
|
RC632_BPSKD_NO_RX_EOF |
|
|
RC632_BPSKD_NO_RX_EGT));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_CONTROL2,
|
|
(RC632_RXCTRL2_AUTO_PD |
|
|
RC632_RXCTRL2_DECSRC_INT));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_RX_WAIT, 0x03);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
(RC632_CR_TX_CRC_ENABLE |
|
|
RC632_CR_RX_CRC_ENABLE |
|
|
RC632_CR_CRC3309));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_LSB, 0xff);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_MSB, 0xff);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rc632_iso15693_init(struct rfid_asic_handle *h)
|
|
{
|
|
int ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_TX_CONTROL,
|
|
(RC632_TXCTRL_MOD_SRC_INT |
|
|
RC632_TXCTRL_TX2_INV |
|
|
RC632_TXCTRL_TX2_RF_EN |
|
|
RC632_TXCTRL_TX1_RF_EN));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CW_CONDUCTANCE, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_CONDUCTANCE, 0x03);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CODER_CONTROL,
|
|
(RC632_CDRCTRL_RATE_15693 |
|
|
0x03)); /* FIXME */
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_WIDTH, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_WIDTH_SOF, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_TYPE_B_FRAMING, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_CONTROL1,
|
|
(RC632_RXCTRL1_SUBCP_16 |
|
|
RC632_RXCTRL1_ISO15693 |
|
|
RC632_RXCTRL1_GAIN_35DB));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_DECODER_CONTROL,
|
|
(RC632_DECCTRL_RXFR_15693 |
|
|
RC632_DECCTRL_RX_INVERT));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_BIT_PHASE, 0xe0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_THRESHOLD, 0xff);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_BPSK_DEM_CONTROL, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_CONTROL2,
|
|
(RC632_RXCTRL2_AUTO_PD |
|
|
RC632_RXCTRL2_DECSRC_INT));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CHANNEL_REDUNDANCY,
|
|
(RC632_CR_CRC3309 |
|
|
RC632_CR_RX_CRC_ENABLE |
|
|
RC632_CR_TX_CRC_ENABLE));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CRC_PRESET_LSB, 0xff);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CRC_PRESET_MSB, 0xff);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rc632_iso15693_icode_init(struct rfid_asic_handle *h)
|
|
{
|
|
int ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_TX_CONTROL,
|
|
(RC632_TXCTRL_MOD_SRC_INT |
|
|
RC632_TXCTRL_TX2_INV |
|
|
RC632_TXCTRL_TX2_RF_EN |
|
|
RC632_TXCTRL_TX1_RF_EN));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CW_CONDUCTANCE, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_CONDUCTANCE, 0x02);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CODER_CONTROL, 0x2c);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_WIDTH, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_WIDTH_SOF, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_WIDTH_SOF, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_TYPE_B_FRAMING, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_CONTROL1, 0x8b); /* FIXME */
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_DECODER_CONTROL, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_BIT_PHASE, 0x52);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_THRESHOLD, 0x66);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_BPSK_DEM_CONTROL, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_CONTROL2,
|
|
RC632_RXCTRL2_DECSRC_INT);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CHANNEL_REDUNDANCY,
|
|
(RC632_CR_RX_CRC_ENABLE |
|
|
RC632_CR_TX_CRC_ENABLE));
|
|
ret = rc632_reg_write(h, RC632_REG_CRC_PRESET_LSB, 0xfe);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CRC_PRESET_MSB, 0xff);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rc632_iso15693_icl_init(struct rfid_asic_handle *h)
|
|
{
|
|
int ret;
|
|
|
|
/* ICL */
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_TX_CONTROL,
|
|
(RC632_TXCTRL_MOD_SRC_INT |
|
|
RC632_TXCTRL_TX2_INV |
|
|
RC632_TXCTRL_TX2_RF_EN |
|
|
RC632_TXCTRL_TX1_RF_EN));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CW_CONDUCTANCE, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_CONDUCTANCE, 0x11);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CODER_CONTROL,
|
|
(RC632_CDRCTRL_RATE_15693 |
|
|
RC632_CDRCTRL_TXCD_ICODE_STD |
|
|
0x03)); /* FIXME */
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_WIDTH, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_MOD_WIDTH_SOF, 0x3f);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = rc632_reg_write(h, RC632_REG_RX_CONTROL1,
|
|
(RC632_RXCTRL1_SUBCP_16|
|
|
RC632_RXCTRL1_ISO15693|
|
|
RC632_RXCTRL1_GAIN_35DB));
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = rc632_reg_write(h, RC632_REG_DECODER_CONTROL,
|
|
(RC632_DECCTRL_RX_INVERT|
|
|
RC632_DECCTRL_RXFR_15693));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_BIT_PHASE, 0xbd);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_THRESHOLD, 0xff);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_BPSK_DEM_CONTROL, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_RX_CONTROL2,
|
|
RC632_RXCTRL2_DECSRC_INT);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CHANNEL_REDUNDANCY, 0x00);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CRC_PRESET_LSB, 0x12);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_CRC_PRESET_MSB, 0xe0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct mifare_authcmd {
|
|
u_int8_t auth_cmd;
|
|
u_int8_t block_address;
|
|
u_int32_t serno; /* lsb 1 2 msb */
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
#define RFID_MIFARE_KEY_LEN 6
|
|
#define RFID_MIFARE_KEY_CODED_LEN 12
|
|
|
|
/* Transform crypto1 key from generic 6byte into rc632 specific 12byte */
|
|
static int
|
|
rc632_mifare_transform_key(const u_int8_t *key6, u_int8_t *key12)
|
|
{
|
|
int i;
|
|
u_int8_t ln;
|
|
u_int8_t hn;
|
|
|
|
for (i = 0; i < RFID_MIFARE_KEY_LEN; i++) {
|
|
ln = key6[i] & 0x0f;
|
|
hn = key6[i] >> 4;
|
|
key12[i * 2 + 1] = (~ln << 4) | ln;
|
|
key12[i * 2] = (~hn << 4) | hn;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rc632_mifare_set_key(struct rfid_asic_handle *h, const u_int8_t *key)
|
|
{
|
|
u_int8_t coded_key[RFID_MIFARE_KEY_CODED_LEN];
|
|
u_int8_t reg;
|
|
int ret;
|
|
|
|
ret = rc632_mifare_transform_key(key, coded_key);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_fifo_write(h, RFID_MIFARE_KEY_CODED_LEN, coded_key, 0x03);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_COMMAND, RC632_CMD_LOAD_KEY);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_wait_idle(h, RC632_TMO_AUTH1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_read(h, RC632_REG_ERROR_FLAG, ®);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (reg & RC632_ERR_FLAG_KEY_ERR)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rc632_mifare_auth(struct rfid_asic_handle *h, u_int8_t cmd, u_int32_t serno,
|
|
u_int8_t block)
|
|
{
|
|
int ret;
|
|
struct mifare_authcmd acmd;
|
|
u_int8_t reg;
|
|
|
|
if (cmd != RFID_CMD_MIFARE_AUTH1A && cmd != RFID_CMD_MIFARE_AUTH1B)
|
|
return -EINVAL;
|
|
|
|
/* Initialize acmd */
|
|
acmd.block_address = block & 0xff;
|
|
acmd.auth_cmd = cmd;
|
|
//acmd.serno = htonl(serno);
|
|
acmd.serno = serno;
|
|
|
|
/* Clear Rx CRC */
|
|
ret = rc632_clear_bits(h, RC632_REG_CHANNEL_REDUNDANCY,
|
|
RC632_CR_RX_CRC_ENABLE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Send Authent1 Command */
|
|
ret = rc632_fifo_write(h, sizeof(acmd), (unsigned char *)&acmd, 0x03);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_write(h, RC632_REG_COMMAND, RC632_CMD_AUTHENT1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Wait until transmitter is idle */
|
|
ret = rc632_wait_idle(h, RC632_TMO_AUTH1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_reg_read(h, RC632_REG_SECONDARY_STATUS, ®);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (reg & 0x07)
|
|
return -EIO;
|
|
|
|
/* Clear Tx CRC */
|
|
ret = rc632_clear_bits(h, RC632_REG_CHANNEL_REDUNDANCY,
|
|
RC632_CR_TX_CRC_ENABLE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Send Authent2 Command */
|
|
ret = rc632_reg_write(h, RC632_REG_COMMAND, RC632_CMD_AUTHENT2);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Wait until transmitter is idle */
|
|
ret = rc632_wait_idle(h, RC632_TMO_AUTH1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Check whether authentication was successful */
|
|
ret = rc632_reg_read(h, RC632_REG_CONTROL, ®);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!(reg & RC632_CONTROL_CRYPTO1_ON))
|
|
return -EACCES;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/* transceive regular frame */
|
|
static int
|
|
rc632_mifare_transceive(struct rfid_asic_handle *handle,
|
|
const u_int8_t *tx_buf, unsigned int tx_len,
|
|
u_int8_t *rx_buf, unsigned int *rx_len,
|
|
u_int64_t timeout, unsigned int flags)
|
|
{
|
|
int ret;
|
|
u_int8_t rxl = *rx_len & 0xff;
|
|
|
|
DEBUGP("entered\n");
|
|
memset(rx_buf, 0, *rx_len);
|
|
|
|
#if 1
|
|
ret = rc632_reg_write(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
(RC632_CR_PARITY_ENABLE |
|
|
RC632_CR_PARITY_ODD |
|
|
RC632_CR_TX_CRC_ENABLE |
|
|
RC632_CR_RX_CRC_ENABLE));
|
|
#else
|
|
ret = rc632_clear_bits(handle, RC632_REG_CHANNEL_REDUNDANCY,
|
|
RC632_CR_RX_CRC_ENABLE|RC632_CR_TX_CRC_ENABLE);
|
|
#endif
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = rc632_transceive(handle, tx_buf, tx_len, rx_buf, &rxl, 0x32, 0);
|
|
*rx_len = rxl;
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
|
|
return 0;
|
|
}
|
|
|