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mode_cardem: Prepare for full support of second UART/USIM

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So far we have only been working with a single UART/USIM. Let's
make things more data structure driven and pass around handles to
the data structures rather than hardcoding...
This commit is contained in:
Harald Welte
2016-03-02 15:17:53 +01:00
parent 06b27f64a2
commit 13e8202c81
1 changed files with 95 additions and 51 deletions
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146
firmware/src_simtrace/mode_cardemu.c
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@@ -14,29 +14,45 @@ static const Pin pins_cardsim[] = PINS_CARDSIM;
static const Pin pins_usim1[] = {PINS_USIM1};
static const Pin pin_usim1_rst = PIN_USIM1_nRST;
static const Pin pin_usim1_vcc = PIN_USIM1_VCC;
static LLIST_HEAD(usb_out_queue_usim1);
#ifdef CARDEMU_SECOND_UART
static const Pin pins_usim2[] = {PINS_USIM1};
static const Pin pin_usim2_rst = PIN_USIM2_nRST;
static const Pin pin_usim2_vcc = PIN_USIM2_VCC;
static LLIST_HEAD(usb_out_queue_usim2);
#endif
static struct card_handle *ch1, *ch2;
static struct ringbuf ch1_rb;
struct cardem_inst {
struct card_handle *ch;
struct llist_head usb_out_queue;
struct ringbuf rb;
struct Usart_info usart_info;
int usb_pending_old;
uint8_t ep_out;
uint8_t ep_in;
uint8_t ep_int;
};
static struct Usart_info usart_info[] = {
static struct cardem_inst cardem_inst[] = {
{
.base = USART1,
.id = ID_USART1,
.state = USART_RCV
.usart_info = {
.base = USART1,
.id = ID_USART1,
.state = USART_RCV
},
.ep_out = PHONE_DATAOUT,
.ep_in = PHONE_DATAIN,
.ep_int = PHONE_INT,
},
#ifdef CARDEMU_SECOND_UART
{
.base = USART0,
.id = ID_USART0,
.state = USART_RCV
.usart_info = {
.base = USART0,
.id = ID_USART0,
.state = USART_RCV
},
.ep_out = CARDEM_USIM2_DATAOUT,
.ep_in = CARDEM_USIM2_DATAIN,
.ep_int = CARDEM_USIM2_INT,
},
#endif
};
@@ -90,8 +106,22 @@ void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx)
/* call-back from card_emu.c to transmit a byte */
int card_emu_uart_tx(uint8_t uart_chan, uint8_t byte)
{
Usart *usart = get_usart_by_chan(uart_chan);
#if 0
Usart_info *ui = &usart_info[uart_chan];
ISO7816_SendChar(byte, ui);
#else
int i = 0;
while ((usart->US_CSR & (US_CSR_TXRDY)) == 0) {
if (!(i%1000000)) {
printf("s: %x %02X", usart->US_CSR, usart->US_RHR & 0xFF);
usart->US_CR = US_CR_RSTTX;
usart->US_CR = US_CR_RSTRX;
}
}
usart->US_THR = byte;
TRACE_ERROR("Sx%02x\r\n", byte);
#endif
return 1;
}
@@ -100,23 +130,23 @@ int card_emu_uart_tx(uint8_t uart_chan, uint8_t byte)
void usart_irq_rx(uint8_t uart)
{
Usart *usart = get_usart_by_chan(uart);
struct card_handle *ch = ch1;
struct cardem_inst *ci = &cardem_inst[0];
uint32_t csr;
uint8_t byte = 0;
#ifdef CARDEMU_SECOND_UART
if (uart == 1)
ch = ch2;
ci = &cardem_inst[1];
#endif
csr = usart->US_CSR;
if (csr & US_CSR_RXRDY) {
byte = (usart->US_RHR) & 0xFF;
rbuf_write(&ch1_rb, byte);
rbuf_write(&ci->rb, byte);
}
if (csr & US_CSR_TXRDY) {
if (card_emu_tx_byte(ch) == 0)
if (card_emu_tx_byte(ci->ch) == 0)
USART_DisableIt(usart, US_IER_TXRDY);
}
@@ -146,17 +176,33 @@ int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi)
static void usim1_rst_irqhandler(const Pin *pPin)
{
int active = PIO_Get(&pin_usim1_rst) ? 0 : 1;
card_emu_io_statechg(ch1, CARD_IO_RST, active);
card_emu_io_statechg(cardem_inst[0].ch, CARD_IO_RST, active);
}
static void usim1_vcc_irqhandler(const Pin *pPin)
{
int active = PIO_Get(&pin_usim1_vcc) ? 1 : 0;
card_emu_io_statechg(ch1, CARD_IO_VCC, active);
card_emu_io_statechg(cardem_inst[0].ch, CARD_IO_VCC, active);
/* FIXME do this for real */
card_emu_io_statechg(ch1, CARD_IO_CLK, active);
card_emu_io_statechg(cardem_inst[0].ch, CARD_IO_CLK, active);
}
#ifdef CARDEMU_SECOND_UART
static void usim2_rst_irqhandler(const Pin *pPin)
{
int active = PIO_Get(&pin_usim2_rst) ? 0 : 1;
card_emu_io_statechg(cardem_inst[1].ch, CARD_IO_RST, active);
}
static void usim2_vcc_irqhandler(const Pin *pPin)
{
int active = PIO_Get(&pin_usim2_vcc) ? 1 : 0;
card_emu_io_statechg(cardem_inst[1].ch, CARD_IO_VCC, active);
/* FIXME do this for real */
card_emu_io_statechg(cardem_inst[1].ch, CARD_IO_CLK, active);
}
#endif
/* executed once at system boot for each config */
void mode_cardemu_configure(void)
{
@@ -166,30 +212,34 @@ void mode_cardemu_configure(void)
/* called if config is activated */
void mode_cardemu_init(void)
{
TRACE_ENTRY();
int i;
rbuf_reset(&ch1_rb);
TRACE_ENTRY();
PIO_Configure(pins_cardsim, PIO_LISTSIZE(pins_cardsim));
INIT_LLIST_HEAD(&cardem_inst[0].usb_out_queue);
rbuf_reset(&cardem_inst[0].rb);
PIO_Configure(pins_usim1, PIO_LISTSIZE(pins_usim1));
ISO7816_Init(&usart_info[0], CLK_SLAVE);
//USART_EnableIt(USART1, US_IER_RXRDY);
ISO7816_Init(&cardem_inst[0].usart_info, CLK_SLAVE);
NVIC_EnableIRQ(USART1_IRQn);
PIO_ConfigureIt(&pin_usim1_rst, usim1_rst_irqhandler);
PIO_EnableIt(&pin_usim1_rst);
PIO_ConfigureIt(&pin_usim1_vcc, usim1_vcc_irqhandler);
PIO_EnableIt(&pin_usim1_vcc);
ch1 = card_emu_init(0, 2, 0);
cardem_inst[0].ch = card_emu_init(0, 2, 0);
#ifdef CARDEMU_SECOND_UART
INIT_LLIST_HEAD(&cardem_inst[1].usb_out_queue);
rbuf_reset(&cardem_inst[1].rb);
PIO_Configure(pins_usim2, PIO_LISTSIZE(pins_usim2));
ISO7816_Init(&usart_info[1], CLK_SLAVE);
//USART_EnableIt(USART0, US_IER_RXRDY);
ISO7816_Init(&cardem_inst[1].usart_info, CLK_SLAVE);
NVIC_EnableIRQ(USART0_IRQn);
ch2 = card_emu_init(1, 0, 1);
PIO_ConfigureIt(&pin_usim2_rst, usim2_rst_irqhandler);
PIO_EnableIt(&pin_usim2_rst);
PIO_ConfigureIt(&pin_usim2_vcc, usim2_vcc_irqhandler);
PIO_EnableIt(&pin_usim2_vcc);
cardem_inst[1].ch = card_emu_init(1, 0, 1);
#endif
}
@@ -206,6 +256,9 @@ void mode_cardemu_exit(void)
USART_SetReceiverEnabled(USART1, 0);
#ifdef CARDEMU_SECOND_UART
PIO_DisableIt(&pin_usim2_rst);
PIO_DisableIt(&pin_usim2_vcc);
NVIC_DisableIRQ(USART0_IRQn);
USART_SetTransmitterEnabled(USART0, 0);
USART_SetReceiverEnabled(USART0, 0);
@@ -223,8 +276,6 @@ static int llist_count(struct llist_head *head)
return i;
}
static int usb_pending_old = 0;
/* handle a single USB command as received from the USB host */
static void dispatch_usb_command(struct req_ctx *rctx, struct card_handle *ch)
{
@@ -268,44 +319,37 @@ static void process_any_usb_commands(struct llist_head *main_q, struct card_hand
void mode_cardemu_run(void)
{
struct llist_head *queue;
unsigned int i;
for (i = 0; i < ARRAY_SIZE(cardem_inst); i++) {
struct cardem_inst *ci = &cardem_inst[i];
if (ch1) {
/* drain the ring buffer from UART into card_emu */
while (1) {
__disable_irq();
if (rbuf_is_empty(&ch1_rb)) {
if (rbuf_is_empty(&ci->rb)) {
__enable_irq();
break;
}
uint8_t byte = rbuf_read(&ch1_rb);
uint8_t byte = rbuf_read(&ci->rb);
__enable_irq();
card_emu_process_rx_byte(ch1, byte);
card_emu_process_rx_byte(ci->ch, byte);
TRACE_ERROR("Rx%02x\r\n", byte);
}
queue = card_emu_get_usb_tx_queue(ch1);
queue = card_emu_get_usb_tx_queue(ci->ch);
int usb_pending = llist_count(queue);
if (usb_pending != usb_pending_old) {
if (usb_pending != ci->usb_pending_old) {
// printf("usb_pending=%d\r\n", usb_pending);
usb_pending_old = usb_pending;
ci->usb_pending_old = usb_pending;
}
usb_refill_to_host(queue, PHONE_DATAIN);
usb_refill_to_host(queue, ci->ep_in);
/* ensure we can handle incoming USB messages from the
* host */
queue = &usb_out_queue_usim1;
usb_refill_from_host(queue, PHONE_DATAOUT);
process_any_usb_commands(queue, ch1);
queue = &ci->usb_out_queue;
usb_refill_from_host(queue, ci->ep_out);
process_any_usb_commands(queue, ci->ch);
}
#ifdef CARDEMU_SECOND_UART
if (ch2) {
rst_active = PIO_Get(&pin_usim2_rst) ? 0 : 1;
vcc_active = PIO_Get(&pin_usim2_vcc) ? 1 : 0;
card_emu_io_statechg(ch2, CARD_IO_RST, rst_active);
card_emu_io_statechg(ch2, CARD_IO_VCC, vcc_active);
/* FIXME: clock ? */
}
usb_from_host(FIXME);
#endif
}