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Diffstat (limited to 'firmware/src/pcd/rc632_highlevel.c')
-rw-r--r--firmware/src/pcd/rc632_highlevel.c1364
1 files changed, 11 insertions, 1353 deletions
diff --git a/firmware/src/pcd/rc632_highlevel.c b/firmware/src/pcd/rc632_highlevel.c
index 0701da2..b83f52b 100644
--- a/firmware/src/pcd/rc632_highlevel.c
+++ b/firmware/src/pcd/rc632_highlevel.c
@@ -54,7 +54,7 @@ rc632_set_bit_mask(struct rfid_asic_handle *handle,
int ret;
u_int8_t tmp;
- ret = rc632_reg_read(handle, reg, &tmp);
+ ret = opcd_rc632_reg_read(handle, reg, &tmp);
if (ret < 0)
return ret;
@@ -62,317 +62,38 @@ rc632_set_bit_mask(struct rfid_asic_handle *handle,
if ((tmp & mask) == val)
return 0;
- return rc632_reg_write(handle, reg, (tmp & ~mask)|(val & mask));
+ return opcd_rc632_reg_write(handle, reg, (tmp & ~mask)|(val & mask));
}
int
rc632_turn_on_rf(struct rfid_asic_handle *handle)
{
ENTER();
- return rc632_set_bits(handle, RC632_REG_TX_CONTROL, 0x03);
+ return opcd_rc632_set_bits(handle, RC632_REG_TX_CONTROL, 0x03);
}
int
rc632_turn_off_rf(struct rfid_asic_handle *handle)
{
ENTER();
- return rc632_clear_bits(handle, RC632_REG_TX_CONTROL, 0x03);
+ return opcd_rc632_clear_bits(handle, RC632_REG_TX_CONTROL, 0x03);
}
static int
rc632_power_up(struct rfid_asic_handle *handle)
{
ENTER();
- return rc632_clear_bits(handle, RC632_REG_CONTROL,
+ return opcd_rc632_clear_bits(handle, RC632_REG_CONTROL,
RC632_CONTROL_POWERDOWN);
}
static int
rc632_power_down(struct rfid_asic_handle *handle)
{
- return rc632_set_bits(handle, RC632_REG_CONTROL,
+ return opcd_rc632_set_bits(handle, RC632_REG_CONTROL,
RC632_CONTROL_POWERDOWN);
}
-/* calculate best 8bit prescaler and divisor for given usec timeout */
-static int best_prescaler(u_int64_t timeout, u_int8_t *prescaler,
- u_int8_t *divisor)
-{
- u_int8_t best_presc, best_divisor, i;
- int64_t smallest_diff;
-
- smallest_diff = 0x7fffffffffffffff;
- best_presc = 0;
-
- for (i = 0; i < 21; i++) {
- u_int64_t clk, tmp_div, res;
- int64_t diff;
- clk = 13560000 / (1 << i);
- tmp_div = (clk * timeout) / 1000000;
- tmp_div++;
-
- if (tmp_div > 0xff)
- continue;
-
- res = 1000000 / (clk / tmp_div);
- diff = res - timeout;
-
- if (diff < 0)
- continue;
-
- if (diff < smallest_diff) {
- best_presc = i;
- best_divisor = tmp_div;
- smallest_diff = diff;
- }
- }
-
- *prescaler = best_presc;
- *divisor = best_divisor;
-
- DEBUGPCRF("timeout %u usec, prescaler = %u, divisor = %u", timeout, best_presc, best_divisor);
-
- return 0;
-}
-
-static int
-rc632_timer_set(struct rfid_asic_handle *handle,
- u_int64_t timeout)
-{
- int ret;
- u_int8_t prescaler, divisor;
-
- ret = best_prescaler(timeout*RC632_TIMEOUT_FUZZ_FACTOR,
- &prescaler, &divisor);
-
- ret = rc632_reg_write(handle, RC632_REG_TIMER_CLOCK,
- prescaler & 0x1f);
- if (ret < 0)
- return ret;
-
- ret = rc632_reg_write(handle, RC632_REG_TIMER_CONTROL,
- RC632_TMR_START_TX_END|RC632_TMR_STOP_RX_BEGIN);
-
- /* clear timer irq bit */
- ret |= rc632_set_bits(handle, RC632_REG_INTERRUPT_RQ, RC632_INT_TIMER);
-
-#ifdef USE_IRQ_
- /* enable interrupt for expired timer */
- ret |= rc632_reg_write(handle, RC632_REG_INTERRUPT_EN,
- RC632_INT_TIMER|RC632_INT_SET);
-#endif
-
- ret |= rc632_reg_write(handle, RC632_REG_TIMER_RELOAD, divisor);
-
- return ret;
-}
-
-/* Wait until RC632 is idle or TIMER IRQ has happened */
-static int rc632_wait_idle_timer(struct rfid_asic_handle *handle)
-{
- int ret;
- u_int8_t irq, cmd;
-
- while (1) {
- ret = rc632_reg_read(handle, RC632_REG_INTERRUPT_RQ, &irq);
- if (ret < 0)
- return ret;
-
- /* FIXME: currently we're lazy: If we actually received
- * something even after the timer expired, we accept it */
- if (irq & RC632_INT_TIMER && !(irq & RC632_INT_RX)) {
- u_int8_t foo;
- rc632_reg_read(handle, RC632_REG_PRIMARY_STATUS, &foo);
- DEBUGPCRF("TIMER && !INT_RX, PRIM_STATUS=0x%02x", foo);
- if (foo & 0x04) {
- rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &foo);
- DEBUGPCRF("ERROR_FLAG=0x%02x, returning timeout", foo);
- }
-
- return -ETIMEDOUT;
- }
-
- ret = rc632_reg_read(handle, RC632_REG_COMMAND, &cmd);
- if (ret < 0)
- return ret;
-
- if (cmd == 0 || irq & RC632_INT_RX)
- return 0;
-
- /* poll every millisecond */
- /* FIXME usleep(1000);*/
- }
-}
-
-/* Stupid RC632 implementations don't evaluate interrupts but poll the
- * command register for "status idle" */
-static int
-rc632_wait_idle(struct rfid_asic_handle *handle, u_int64_t timeout)
-{
- u_int8_t cmd = 0xff;
- int ret, cycles = 0;
-#define USLEEP_PER_CYCLE 128
-
- while (cmd != 0) {
- ret = rc632_reg_read(handle, RC632_REG_COMMAND, &cmd);
- if (ret < 0)
- return ret;
-
- if (cmd == 0) {
- /* FIXME: read second time ?? */
- return 0;
- }
-
- {
- u_int8_t foo;
- rc632_reg_read(handle, RC632_REG_PRIMARY_STATUS, &foo);
- if (foo & 0x04)
- rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &foo);
- }
-
- /* Abort after some timeout */
- if (cycles > timeout*RC632_TIMEOUT_FUZZ_FACTOR/USLEEP_PER_CYCLE) {
- return -ETIMEDOUT;
- }
-
- cycles++;
- usleep(USLEEP_PER_CYCLE);
- }
-
- return 0;
-}
-
-static int
-rc632_transmit(struct rfid_asic_handle *handle,
- const u_int8_t *buf,
- u_int8_t len,
- u_int64_t timeout)
-{
- int ret, cur_len;
- const u_int8_t *cur_buf = buf;
-
- if (len > 64)
- cur_len = 64;
- else
- cur_len = len;
-
- do {
- ret = rc632_fifo_write(handle, cur_len, cur_buf, 0x03);
- if (ret < 0)
- return ret;
-
- if (cur_buf == buf) {
- /* only start transmit first time */
- ret = rc632_reg_write(handle, RC632_REG_COMMAND,
- RC632_CMD_TRANSMIT);
- if (ret < 0)
- return ret;
- }
-
- cur_buf += cur_len;
- if (cur_buf < buf + len) {
- cur_len = buf - cur_buf;
- if (cur_len > 64)
- cur_len = 64;
- } else
- cur_len = 0;
-
- } while (cur_len);
-
- return rc632_wait_idle(handle, timeout);
-}
-
-static int
-tcl_toggle_pcb(struct rfid_asic_handle *handle)
-{
- // FIXME: toggle something between 0x0a and 0x0b
- return 0;
-}
-
-static int
-rc632_transceive(struct rfid_asic_handle *handle,
- const u_int8_t *tx_buf,
- u_int8_t tx_len,
- u_int8_t *rx_buf,
- u_int8_t *rx_len,
- u_int64_t timer,
- unsigned int toggle)
-{
- int ret, cur_tx_len;
- const u_int8_t *cur_tx_buf = tx_buf;
-
- DEBUGPCRF("tx_len=%u, rx_len=%u, timer=%llu", tx_len, *rx_len, timer);
-
- if (tx_len > 64)
- cur_tx_len = 64;
- else
- cur_tx_len = tx_len;
-
- ret = rc632_reg_write(handle, RC632_REG_COMMAND, 0x00);
- /* clear all interrupts */
- ret = rc632_reg_write(handle, RC632_REG_INTERRUPT_RQ, 0x7f);
- if (ret < 0)
- return ret;
-
- ret = rc632_timer_set(handle, timer);
- if (ret < 0)
- return ret;
-
- do {
- ret = rc632_fifo_write(handle, cur_tx_len, cur_tx_buf, 0x03);
- if (ret < 0)
- return ret;
-
- if (cur_tx_buf == tx_buf) {
- ret = rc632_reg_write(handle, RC632_REG_COMMAND,
- RC632_CMD_TRANSCEIVE);
- if (ret < 0)
- return ret;
- }
-
- cur_tx_buf += cur_tx_len;
- if (cur_tx_buf < tx_buf + tx_len) {
- u_int8_t fifo_fill;
- ret = rc632_reg_read(handle, RC632_REG_FIFO_LENGTH,
- &fifo_fill);
- if (ret < 0)
- return ret;
-
- cur_tx_len = 64 - fifo_fill;
- DEBUGPCRF("refilling tx fifo with %u bytes", cur_tx_len);
- } else
- cur_tx_len = 0;
-
- } while (cur_tx_len);
-
- if (toggle == 1)
- tcl_toggle_pcb(handle);
-
- ret = rc632_wait_idle_timer(handle);
- if (ret < 0)
- return ret;
-
- ret = rc632_reg_read(handle, RC632_REG_FIFO_LENGTH, rx_len);
- if (ret < 0)
- return ret;
-
- DEBUGPCRF("rx_len = %u\n", *rx_len);
-
- if (*rx_len == 0) {
- u_int8_t tmp, tmp2;
-
- rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &tmp);
- rc632_reg_read(handle, RC632_REG_CHANNEL_REDUNDANCY, &tmp2);
-
- DEBUGPCRF("rx_len == 0, error_flag=0x%02x, channel_red=0x%02x",
- tmp, tmp2);
-
- return -1;
- }
-
- return rc632_fifo_read(handle, *rx_len, rx_buf);
-}
-
int
rc632_read_eeprom(struct rfid_asic_handle *handle, u_int16_t addr, u_int8_t len,
u_int8_t *recvbuf)
@@ -385,1094 +106,31 @@ rc632_read_eeprom(struct rfid_asic_handle *handle, u_int16_t addr, u_int8_t len,
sndbuf[1] = addr >> 8;
sndbuf[2] = len;
- ret = rc632_fifo_write(handle, 3, sndbuf, 0x03);
+ ret = opcd_rc632_fifo_write(handle, 3, sndbuf, 0x03);
if (ret < 0)
return ret;
- ret = rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_READ_E2);
+ ret = opcd_rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_READ_E2);
if (ret < 0)
return ret;
/* usleep(20000); */
- ret = rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &err);
+ ret = opcd_rc632_reg_read(handle, RC632_REG_ERROR_FLAG, &err);
if (err & RC632_ERR_FLAG_ACCESS_ERR)
return -EPERM;
- ret = rc632_reg_read(handle, RC632_REG_FIFO_LENGTH, &err);
+ ret = opcd_rc632_reg_read(handle, RC632_REG_FIFO_LENGTH, &err);
if (err < len)
len = err;
- ret = rc632_fifo_read(handle, len, recvbuf);
+ ret = opcd_rc632_fifo_read(handle, len, recvbuf);
if (ret < 0)
return ret;
return len;
}
-static int
-rc632_calc_crc16_from(struct rfid_asic_handle *handle)
-{
- u_int8_t sndbuf[2] = { 0x01, 0x02 };
- u_int8_t crc_lsb = 0x00 , crc_msb = 0x00;
- int ret;
-
- ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_LSB, 0x12);
- if (ret < 0)
- return ret;
-
- ret = rc632_reg_write(handle, RC632_REG_CRC_PRESET_MSB, 0xe0);
- if (ret < 0)
- return ret;
-
- ret = rc632_fifo_write(handle, sizeof(sndbuf), sndbuf, 3);
- if (ret < 0)
- return ret;
-
- ret = rc632_reg_write(handle, RC632_REG_COMMAND, RC632_CMD_CALC_CRC);
- if (ret < 0)
- return ret;
-
- usleep(10000); // FIXME: no checking for cmd completion?
-
- ret = rc632_reg_read(handle, RC632_REG_CRC_RESULT_LSB, &crc_lsb);
- if (ret < 0)
- return ret;
-
- ret = rc632_reg_read(handle, RC632_REG_CRC_RESULT_MSB, &crc_msb);
- if (ret < 0)
- return ret;
-
- // FIXME: what to do with crc result?
- return ret;
-}
-
-
-int
-rc632_register_dump(struct rfid_asic_handle *handle, u_int8_t *buf)
-{
- int ret;
- u_int8_t i;
-
- for (i = 0; i <= 0x3f; i++) {
- ret = rc632_reg_read(handle, i, &buf[i]);
- // do we want error checks?
- }
- return 0;
-}
-
-
-#if 0
-static int
-rc632_init(struct rfid_asic_handle *ah)
-{
- int ret;
-
- /* switch off rf (make sure PICCs are reset at init time) */
- ret = rc632_power_down(ah);
- if (ret < 0)
- return ret;
-
- usleep(10000);
-
- /* switch on rf */
- ret = rc632_power_up(ah);
- if (ret < 0)
- return ret;
-
- /* disable register paging */
- ret = rc632_reg_write(ah, 0x00, 0x00);
- if (ret < 0)
- return ret;
-
- /* set some sane default values */
- ret = rc632_reg_write(ah, 0x11, 0x5b);
- if (ret < 0)
- return ret;
-
- /* switch on rf */
- ret = rc632_turn_on_rf(ah);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int
-rc632_fini(struct rfid_asic_handle *ah)
-{
- int ret;
-
- /* switch off rf */
- ret = rc632_turn_off_rf(ah);
- if (ret < 0)
- return ret;
-
- ret = rc632_power_down(ah);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-#endif
-
-
-/*
- * Philips CL RC632 primitives for ISO 14443-A compliant PICC's
- *
- * (C) 2005 by Harald Welte <laforge@gnumonks.org>
- *
- */
-
-int
-rc632_iso14443a_init(struct rfid_asic_handle *handle)
-{
- int ret;
-
- // FIXME: some fifo work (drain fifo?)
-
- /* flush fifo (our way) */
- ret = rc632_reg_write(handle, RC632_REG_CONTROL, 0x01);
-
- 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_FORCE_100_ASK |
- RC632_TXCTRL_MOD_SRC_INT));
- if (ret < 0)
- return ret;
-
- 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, &reg);
- 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, &reg);
- 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, &reg);
- 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;
-}
-
#define RC632_E2_PRODUCT_TYPE 0
#define RC632_E2_PRODUCT_SERIAL 8
#define RC632_E2_RS_MAX_P 14
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