Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 1 | #include "board.h" |
| 2 | #include "card_emu.h" |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 3 | #include "iso7816_fidi.h" |
| 4 | |
| 5 | #define TRACE_ENTRY() TRACE_DEBUG("%s entering\n", __func__) |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 6 | |
| 7 | static const Pin pins_cardsim[] = PINS_CARDSIM; |
| 8 | |
| 9 | /* UART pins */ |
| 10 | static const Pin pins_usim1[] = {PINS_USIM1}; |
| 11 | static const Pin pin_usim1_rst = PIN_USIM1_nRST; |
| 12 | static const Pin pin_usim1_vcc = PIN_USIM1_VCC; |
| 13 | |
| 14 | #ifdef CARDEMU_SECOND_UART |
| 15 | static const Pin pins_usim2[] = {PINS_USIM1}; |
| 16 | static const Pin pin_usim2_rst = PIN_USIM2_nRST; |
| 17 | static const Pin pin_usim2_vcc = PIN_USIM2_VCC; |
| 18 | #endif |
| 19 | |
| 20 | static struct card_handle *ch1, *ch2; |
| 21 | |
| 22 | static struct Usart_info usart_info[] = { |
| 23 | { |
| 24 | .base = USART1, |
| 25 | .id = ID_USART1, |
| 26 | .state = USART_RCV |
| 27 | }, |
| 28 | #ifdef CARDEMU_SECOND_UART |
| 29 | { |
| 30 | .base = USART0, |
| 31 | .id = ID_USART0, |
| 32 | .state = USART_RCV |
| 33 | }, |
| 34 | #endif |
| 35 | }; |
| 36 | |
| 37 | static Usart *get_usart_by_chan(uint8_t uart_chan) |
| 38 | { |
| 39 | switch (uart_chan) { |
| 40 | case 0: |
| 41 | return USART1; |
| 42 | #ifdef CARDEMU_SECOND_UART |
| 43 | case 1: |
| 44 | return USART0; |
| 45 | #endif |
| 46 | } |
| 47 | return NULL; |
| 48 | } |
| 49 | |
| 50 | /*********************************************************************** |
| 51 | * Call-Backs from card_emu.c |
| 52 | ***********************************************************************/ |
| 53 | |
| 54 | /* call-back from card_emu.c to enable/disable transmit and/or receive */ |
| 55 | void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx) |
| 56 | { |
| 57 | Usart *usart = get_usart_by_chan(uart_chan); |
| 58 | switch (rxtx) { |
| 59 | case ENABLE_TX: |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame^] | 60 | USART_EnableIt(usart, US_IER_TXRDY); |
| 61 | USART_DisableIt(usart, ~US_IER_TXRDY); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 62 | USART_SetReceiverEnabled(usart, 0); |
| 63 | USART_SetTransmitterEnabled(usart, 1); |
| 64 | break; |
| 65 | case ENABLE_RX: |
| 66 | USART_SetTransmitterEnabled(usart, 0); |
| 67 | USART_SetReceiverEnabled(usart, 1); |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame^] | 68 | USART_EnableIt(usart, US_IER_RXRDY); |
| 69 | USART_DisableIt(usart, ~US_IER_RXRDY); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 70 | break; |
| 71 | case 0: |
| 72 | default: |
| 73 | USART_SetTransmitterEnabled(usart, 0); |
| 74 | USART_SetReceiverEnabled(usart, 0); |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame^] | 75 | USART_DisableIt(usart, 0xFFFFFFFF); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 76 | break; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | /* call-back from card_emu.c to transmit a byte */ |
| 81 | int card_emu_uart_tx(uint8_t uart_chan, uint8_t byte) |
| 82 | { |
| 83 | Usart_info *ui = &usart_info[uart_chan]; |
| 84 | ISO7816_SendChar(byte, ui); |
| 85 | return 1; |
| 86 | } |
| 87 | |
| 88 | |
| 89 | /* FIXME: integrate this with actual irq handler */ |
| 90 | void usart_irq_rx(uint8_t uart, uint32_t csr, uint8_t byte) |
| 91 | { |
| 92 | struct card_handle *ch = ch1; |
| 93 | #ifdef CARDEMU_SECOND_UART |
| 94 | if (uart == 0) |
| 95 | ch = ch2; |
| 96 | #endif |
| 97 | |
| 98 | if (csr & US_CSR_TXRDY) |
| 99 | card_emu_tx_byte(ch); |
| 100 | |
| 101 | if (csr & US_CSR_RXRDY) |
| 102 | card_emu_process_rx_byte(ch, byte); |
| 103 | |
| 104 | if (csr & (US_CSR_OVRE|US_CSR_FRAME|US_CSR_PARE| |
| 105 | US_CSR_TIMEOUT|US_CSR_NACK|(1<<10))) { |
| 106 | TRACE_DEBUG("e 0x%x st: 0x%x\n", byte, csr); |
| 107 | } |
| 108 | } |
| 109 | |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 110 | /* call-back from card_emu.c to change UART baud rate */ |
| 111 | int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi) |
| 112 | { |
| 113 | int rc; |
| 114 | uint8_t fi = fidi >> 4; |
| 115 | uint8_t di = fidi & 0xf; |
| 116 | Usart *usart = get_usart_by_chan(uart_chan); |
| 117 | |
| 118 | rc = compute_fidi_ratio(fi, di); |
| 119 | if (rc > 0 && rc < 0x400) { |
| 120 | TRACE_INFO("computed Fi(%u) Di(%u) ratio: %d", fi, di, rc); |
| 121 | usart->US_CR |= US_CR_RXDIS | US_CR_RSTRX; |
| 122 | usart->US_FIDI = rc & 0x3ff; |
| 123 | usart->US_CR |= US_CR_RXEN | US_CR_STTTO; |
| 124 | return 0; |
| 125 | } else { |
| 126 | TRACE_INFO("computed FiDi ratio %d unsupported", rc); |
| 127 | return -1; |
| 128 | } |
| 129 | } |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 130 | |
| 131 | /*********************************************************************** |
| 132 | * Core USB / mainloop integration |
| 133 | ***********************************************************************/ |
| 134 | |
| 135 | /* executed once at system boot for each config */ |
| 136 | void mode_cardemu_configure(void) |
| 137 | { |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 138 | TRACE_ENTRY(); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | /* called if config is activated */ |
| 142 | void mode_cardemu_init(void) |
| 143 | { |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 144 | TRACE_ENTRY(); |
| 145 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 146 | PIO_Configure(pins_cardsim, PIO_LISTSIZE(pins_cardsim)); |
| 147 | |
| 148 | PIO_Configure(pins_usim1, PIO_LISTSIZE(pins_usim1)); |
| 149 | ISO7816_Init(&usart_info[0], CLK_SLAVE); |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame^] | 150 | //USART_EnableIt(USART1, US_IER_RXRDY); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 151 | NVIC_EnableIRQ(USART1_IRQn); |
| 152 | ch1 = card_emu_init(0, 2, 0); |
| 153 | |
| 154 | #ifdef CARDEMU_SECOND_UART |
| 155 | PIO_Configure(pins_usim2, PIO_LISTSIZE(pins_usim2)); |
| 156 | ISO7816_Init(&usart_info[1], CLK_SLAVE); |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame^] | 157 | //USART_EnableIt(USART0, US_IER_RXRDY); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 158 | NVIC_EnableIRQ(USART0_IRQn); |
| 159 | ch2 = card_emu_init(1, 0, 1); |
| 160 | #endif |
| 161 | } |
| 162 | |
| 163 | /* called if config is deactivated */ |
| 164 | void mode_cardemu_exit(void) |
| 165 | { |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 166 | TRACE_ENTRY(); |
| 167 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 168 | NVIC_DisableIRQ(USART1_IRQn); |
| 169 | USART_SetTransmitterEnabled(USART1, 0); |
| 170 | USART_SetReceiverEnabled(USART1, 0); |
| 171 | |
| 172 | #ifdef CARDEMU_SECOND_UART |
| 173 | NVIC_DisableIRQ(USART0_IRQn); |
| 174 | USART_SetTransmitterEnabled(USART0, 0); |
| 175 | USART_SetReceiverEnabled(USART0, 0); |
| 176 | #endif |
| 177 | } |
| 178 | |
| 179 | /* main loop function, called repeatedly */ |
| 180 | void mode_cardemu_run(void) |
| 181 | { |
| 182 | int rst_active, vcc_active; |
| 183 | |
| 184 | /* usb_to_host() is handled by main() */ |
| 185 | |
| 186 | if (ch1) { |
| 187 | rst_active = PIO_Get(&pin_usim1_rst) ? 0 : 1; |
| 188 | vcc_active = PIO_Get(&pin_usim1_vcc) ? 1 : 0; |
| 189 | card_emu_io_statechg(ch1, CARD_IO_RST, rst_active); |
| 190 | card_emu_io_statechg(ch1, CARD_IO_VCC, vcc_active); |
| 191 | /* FIXME: clock ? */ |
| 192 | } |
| 193 | usb_from_host(PHONE_DATAOUT); |
| 194 | |
| 195 | #ifdef CARDEMU_SECOND_UART |
| 196 | if (ch2) { |
| 197 | rst_active = PIO_Get(&pin_usim2_rst) ? 0 : 1; |
| 198 | vcc_active = PIO_Get(&pin_usim2_vcc) ? 1 : 0; |
| 199 | card_emu_io_statechg(ch2, CARD_IO_RST, rst_active); |
| 200 | card_emu_io_statechg(ch2, CARD_IO_VCC, vcc_active); |
| 201 | /* FIXME: clock ? */ |
| 202 | } |
| 203 | usb_from_host(FIXME); |
| 204 | #endif |
| 205 | } |