Kévin Redon | 9a12d68 | 2018-07-08 13:21:16 +0200 | [diff] [blame] | 1 | /* card emulation mode |
| 2 | * |
| 3 | * (C) 2015-2017 by Harald Welte <laforge@gnumonks.org> |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 4 | * (C) 2018-2019 by sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de> |
Kévin Redon | 9a12d68 | 2018-07-08 13:21:16 +0200 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
| 19 | */ |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 20 | #include "board.h" |
Kévin Redon | ac0843a | 2018-07-11 09:23:33 +0200 | [diff] [blame] | 21 | #include "boardver_adc.h" |
Harald Welte | 1605564 | 2016-03-03 11:02:45 +0100 | [diff] [blame] | 22 | #include "simtrace.h" |
| 23 | #include "ringbuffer.h" |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 24 | #include "card_emu.h" |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 25 | #include "iso7816_fidi.h" |
Harald Welte | 54cb3d0 | 2016-02-29 14:12:40 +0100 | [diff] [blame] | 26 | #include "utils.h" |
Harald Welte | 9d90d28 | 2018-06-29 22:25:42 +0200 | [diff] [blame] | 27 | #include <osmocom/core/linuxlist.h> |
| 28 | #include <osmocom/core/msgb.h> |
Harald Welte | 9f240b6 | 2016-03-18 10:32:56 +0100 | [diff] [blame] | 29 | #include "llist_irqsafe.h" |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 30 | #include "usb_buf.h" |
Kévin Redon | a1012b1 | 2018-07-01 18:11:01 +0200 | [diff] [blame] | 31 | #include "simtrace_usb.h" |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 32 | #include "simtrace_prot.h" |
Harald Welte | 5c583d3 | 2017-05-09 06:46:47 +0200 | [diff] [blame] | 33 | #include "sim_switch.h" |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 34 | |
Harald Welte | fd9c041 | 2016-03-20 18:15:57 +0100 | [diff] [blame] | 35 | #define TRACE_ENTRY() TRACE_DEBUG("%s entering\r\n", __func__) |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 36 | |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 37 | #ifdef PINS_CARDSIM |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 38 | static const Pin pins_cardsim[] = PINS_CARDSIM; |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 39 | #endif |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 40 | |
| 41 | /* UART pins */ |
| 42 | static const Pin pins_usim1[] = {PINS_USIM1}; |
| 43 | static const Pin pin_usim1_rst = PIN_USIM1_nRST; |
| 44 | static const Pin pin_usim1_vcc = PIN_USIM1_VCC; |
| 45 | |
| 46 | #ifdef CARDEMU_SECOND_UART |
Kévin Redon | 7233cf8 | 2019-11-14 19:37:32 +0100 | [diff] [blame] | 47 | static const Pin pins_usim2[] = {PINS_USIM2}; |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 48 | static const Pin pin_usim2_rst = PIN_USIM2_nRST; |
| 49 | static const Pin pin_usim2_vcc = PIN_USIM2_VCC; |
| 50 | #endif |
| 51 | |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 52 | struct cardem_inst { |
Harald Welte | c394109 | 2018-08-26 09:53:13 +0200 | [diff] [blame] | 53 | unsigned int num; |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 54 | struct card_handle *ch; |
| 55 | struct llist_head usb_out_queue; |
| 56 | struct ringbuf rb; |
| 57 | struct Usart_info usart_info; |
| 58 | int usb_pending_old; |
| 59 | uint8_t ep_out; |
| 60 | uint8_t ep_in; |
| 61 | uint8_t ep_int; |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 62 | const Pin pin_insert; |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 63 | #ifdef DETECT_VCC_BY_ADC |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 64 | uint32_t vcc_uv; |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 65 | #endif |
| 66 | bool vcc_active; |
| 67 | bool vcc_active_last; |
| 68 | bool rst_active; |
| 69 | bool rst_active_last; |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 70 | }; |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 71 | |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 72 | struct cardem_inst cardem_inst[] = { |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 73 | { |
Harald Welte | dde112e | 2016-03-20 16:42:11 +0100 | [diff] [blame] | 74 | .num = 0, |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 75 | .usart_info = { |
| 76 | .base = USART1, |
| 77 | .id = ID_USART1, |
| 78 | .state = USART_RCV |
| 79 | }, |
Kévin Redon | a1012b1 | 2018-07-01 18:11:01 +0200 | [diff] [blame] | 80 | .ep_out = SIMTRACE_CARDEM_USB_EP_USIM1_DATAOUT, |
| 81 | .ep_in = SIMTRACE_CARDEM_USB_EP_USIM1_DATAIN, |
| 82 | .ep_int = SIMTRACE_CARDEM_USB_EP_USIM1_INT, |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 83 | #ifdef PIN_SET_USIM1_PRES |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 84 | .pin_insert = PIN_SET_USIM1_PRES, |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 85 | #endif |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 86 | }, |
| 87 | #ifdef CARDEMU_SECOND_UART |
| 88 | { |
Harald Welte | dde112e | 2016-03-20 16:42:11 +0100 | [diff] [blame] | 89 | .num = 1, |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 90 | .usart_info = { |
| 91 | .base = USART0, |
| 92 | .id = ID_USART0, |
| 93 | .state = USART_RCV |
| 94 | }, |
Kévin Redon | a1012b1 | 2018-07-01 18:11:01 +0200 | [diff] [blame] | 95 | .ep_out = SIMTRACE_CARDEM_USB_EP_USIM2_DATAOUT, |
| 96 | .ep_in = SIMTRACE_CARDEM_USB_EP_USIM2_DATAIN, |
| 97 | .ep_int = SIMTRACE_CARDEM_USB_EP_USIM2_INT, |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 98 | #ifdef PIN_SET_USIM2_PRES |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 99 | .pin_insert = PIN_SET_USIM2_PRES, |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 100 | #endif |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 101 | }, |
| 102 | #endif |
| 103 | }; |
| 104 | |
| 105 | static Usart *get_usart_by_chan(uint8_t uart_chan) |
| 106 | { |
Kévin Redon | ebe672e | 2018-07-29 00:18:12 +0200 | [diff] [blame] | 107 | if (uart_chan < ARRAY_SIZE(cardem_inst)) { |
| 108 | return cardem_inst[uart_chan].usart_info.base; |
| 109 | } else { |
| 110 | return NULL; |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 111 | } |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | /*********************************************************************** |
| 115 | * Call-Backs from card_emu.c |
| 116 | ***********************************************************************/ |
| 117 | |
Harald Welte | c8beefb | 2016-03-20 14:40:47 +0100 | [diff] [blame] | 118 | static void wait_tx_idle(Usart *usart) |
| 119 | { |
| 120 | int i = 1; |
| 121 | |
| 122 | /* wait until last char has been fully transmitted */ |
| 123 | while ((usart->US_CSR & (US_CSR_TXEMPTY)) == 0) { |
| 124 | if (!(i%1000000)) { |
Harald Welte | c394109 | 2018-08-26 09:53:13 +0200 | [diff] [blame] | 125 | TRACE_ERROR("s: %lx \r\n", usart->US_CSR); |
Harald Welte | c8beefb | 2016-03-20 14:40:47 +0100 | [diff] [blame] | 126 | } |
| 127 | i++; |
| 128 | } |
| 129 | } |
| 130 | |
Harald Welte | c58bba0 | 2016-03-20 14:57:53 +0100 | [diff] [blame] | 131 | void card_emu_uart_wait_tx_idle(uint8_t uart_chan) |
| 132 | { |
| 133 | Usart *usart = get_usart_by_chan(uart_chan); |
| 134 | wait_tx_idle(usart); |
| 135 | } |
| 136 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 137 | /* call-back from card_emu.c to enable/disable transmit and/or receive */ |
| 138 | void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx) |
| 139 | { |
| 140 | Usart *usart = get_usart_by_chan(uart_chan); |
| 141 | switch (rxtx) { |
| 142 | case ENABLE_TX: |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame] | 143 | USART_DisableIt(usart, ~US_IER_TXRDY); |
Harald Welte | c8beefb | 2016-03-20 14:40:47 +0100 | [diff] [blame] | 144 | /* as irritating as it is, we actually want to keep the |
| 145 | * receiver enabled during transmit */ |
| 146 | USART_SetReceiverEnabled(usart, 1); |
Harald Welte | 8a416b1 | 2016-03-01 00:42:04 +0100 | [diff] [blame] | 147 | usart->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; |
| 148 | USART_EnableIt(usart, US_IER_TXRDY); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 149 | USART_SetTransmitterEnabled(usart, 1); |
| 150 | break; |
| 151 | case ENABLE_RX: |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame] | 152 | USART_DisableIt(usart, ~US_IER_RXRDY); |
Harald Welte | c8beefb | 2016-03-20 14:40:47 +0100 | [diff] [blame] | 153 | /* as irritating as it is, we actually want to keep the |
| 154 | * transmitter enabled during receive */ |
| 155 | USART_SetTransmitterEnabled(usart, 1); |
| 156 | wait_tx_idle(usart); |
Harald Welte | 8a416b1 | 2016-03-01 00:42:04 +0100 | [diff] [blame] | 157 | usart->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; |
| 158 | USART_EnableIt(usart, US_IER_RXRDY); |
| 159 | USART_SetReceiverEnabled(usart, 1); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 160 | break; |
| 161 | case 0: |
| 162 | default: |
| 163 | USART_SetTransmitterEnabled(usart, 0); |
| 164 | USART_SetReceiverEnabled(usart, 0); |
Harald Welte | 9dbc46e | 2016-02-29 10:05:10 +0100 | [diff] [blame] | 165 | USART_DisableIt(usart, 0xFFFFFFFF); |
Harald Welte | 8a416b1 | 2016-03-01 00:42:04 +0100 | [diff] [blame] | 166 | usart->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 167 | break; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | /* call-back from card_emu.c to transmit a byte */ |
| 172 | int card_emu_uart_tx(uint8_t uart_chan, uint8_t byte) |
| 173 | { |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 174 | Usart *usart = get_usart_by_chan(uart_chan); |
| 175 | #if 0 |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 176 | Usart_info *ui = &usart_info[uart_chan]; |
| 177 | ISO7816_SendChar(byte, ui); |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 178 | #else |
Harald Welte | 53079bb | 2016-03-20 14:58:35 +0100 | [diff] [blame] | 179 | int i = 1; |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 180 | while ((usart->US_CSR & (US_CSR_TXRDY)) == 0) { |
| 181 | if (!(i%1000000)) { |
Harald Welte | c394109 | 2018-08-26 09:53:13 +0200 | [diff] [blame] | 182 | TRACE_ERROR("%u: s: %lx %02lX\r\n", |
Harald Welte | dde112e | 2016-03-20 16:42:11 +0100 | [diff] [blame] | 183 | uart_chan, usart->US_CSR, |
| 184 | usart->US_RHR & 0xFF); |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 185 | usart->US_CR = US_CR_RSTTX; |
| 186 | usart->US_CR = US_CR_RSTRX; |
| 187 | } |
Harald Welte | 53079bb | 2016-03-20 14:58:35 +0100 | [diff] [blame] | 188 | i++; |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 189 | } |
| 190 | usart->US_THR = byte; |
Harald Welte | 53079bb | 2016-03-20 14:58:35 +0100 | [diff] [blame] | 191 | //TRACE_ERROR("Sx%02x\r\n", byte); |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 192 | #endif |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 193 | return 1; |
| 194 | } |
| 195 | |
| 196 | |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 197 | /*! common handler if interrupt was received. |
| 198 | * \param[in] inst_num Instance number, range 0..1 (some boards only '0' permitted) */ |
Harald Welte | 3bafe43 | 2016-03-20 16:43:12 +0100 | [diff] [blame] | 199 | static void usart_irq_rx(uint8_t inst_num) |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 200 | { |
Harald Welte | 3bafe43 | 2016-03-20 16:43:12 +0100 | [diff] [blame] | 201 | Usart *usart = get_usart_by_chan(inst_num); |
| 202 | struct cardem_inst *ci = &cardem_inst[inst_num]; |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 203 | uint32_t csr; |
| 204 | uint8_t byte = 0; |
| 205 | |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 206 | /* get one atomic snapshot of state/flags before they get changed */ |
Harald Welte | da15ca0 | 2016-03-17 21:14:04 +0100 | [diff] [blame] | 207 | csr = usart->US_CSR & usart->US_IMR; |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 208 | |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 209 | /* check if one byte has been completely received and is now in the holding register */ |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 210 | if (csr & US_CSR_RXRDY) { |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 211 | /* read the bye from the holding register */ |
Kévin Redon | 680bdab | 2018-07-18 14:00:57 +0200 | [diff] [blame] | 212 | byte = (usart->US_RHR) & 0xFF; |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 213 | /* append it to the buffer */ |
Harald Welte | 05cc7f6 | 2018-07-04 04:39:40 +0200 | [diff] [blame] | 214 | if (rbuf_write(&ci->rb, byte) < 0) |
| 215 | TRACE_ERROR("rbuf overrun\r\n"); |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 216 | } |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 217 | |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 218 | /* check if the transmitter is ready for the next byte */ |
Harald Welte | 12d4bdf | 2016-03-02 10:31:03 +0100 | [diff] [blame] | 219 | if (csr & US_CSR_TXRDY) { |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 220 | /* transmit next byte and check if more bytes are to be transmitted */ |
| 221 | if (card_emu_tx_byte(ci->ch) == 0) { |
| 222 | /* stop the TX ready interrupt of no more bytes to transmit */ |
Harald Welte | 12d4bdf | 2016-03-02 10:31:03 +0100 | [diff] [blame] | 223 | USART_DisableIt(usart, US_IER_TXRDY); |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 224 | } |
Harald Welte | 12d4bdf | 2016-03-02 10:31:03 +0100 | [diff] [blame] | 225 | } |
| 226 | |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 227 | /* check if any error flags are set */ |
| 228 | if (csr & (US_CSR_OVRE|US_CSR_FRAME|US_CSR_PARE|US_CSR_TIMEOUT|US_CSR_NACK|(1<<10))) { |
| 229 | /* clear any error flags */ |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 230 | usart->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 231 | TRACE_ERROR("%u USART error on 0x%x status: 0x%lx\n", ci->num, byte, csr); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 232 | } |
| 233 | } |
| 234 | |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 235 | /*! ISR called for USART0 */ |
Harald Welte | 3bafe43 | 2016-03-20 16:43:12 +0100 | [diff] [blame] | 236 | void mode_cardemu_usart0_irq(void) |
| 237 | { |
| 238 | /* USART0 == Instance 1 == USIM 2 */ |
| 239 | usart_irq_rx(1); |
| 240 | } |
| 241 | |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 242 | /*! ISR called for USART1 */ |
Harald Welte | 3bafe43 | 2016-03-20 16:43:12 +0100 | [diff] [blame] | 243 | void mode_cardemu_usart1_irq(void) |
| 244 | { |
| 245 | /* USART1 == Instance 0 == USIM 1 */ |
| 246 | usart_irq_rx(0); |
| 247 | } |
| 248 | |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 249 | /* call-back from card_emu.c to change UART baud rate */ |
| 250 | int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi) |
| 251 | { |
| 252 | int rc; |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 253 | Usart *usart = get_usart_by_chan(uart_chan); |
| 254 | |
Harald Welte | 99f62a6 | 2016-02-29 10:08:49 +0100 | [diff] [blame] | 255 | usart->US_CR |= US_CR_RXDIS | US_CR_RSTRX; |
| 256 | usart->US_FIDI = fidi & 0x3ff; |
| 257 | usart->US_CR |= US_CR_RXEN | US_CR_STTTO; |
| 258 | return 0; |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 259 | } |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 260 | |
Kévin Redon | ebe672e | 2018-07-29 00:18:12 +0200 | [diff] [blame] | 261 | /* call-back from card_emu.c to force a USART interrupt */ |
| 262 | void card_emu_uart_interrupt(uint8_t uart_chan) |
| 263 | { |
| 264 | Usart *usart = get_usart_by_chan(uart_chan); |
| 265 | if (!usart) { |
| 266 | return; |
| 267 | } |
| 268 | if (USART0 == usart) { |
| 269 | NVIC_SetPendingIRQ(USART0_IRQn); |
| 270 | } else if (USART1 == usart) { |
| 271 | NVIC_SetPendingIRQ(USART1_IRQn); |
| 272 | } |
| 273 | } |
| 274 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 275 | /*********************************************************************** |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 276 | * ADC for VCC voltage detection |
| 277 | ***********************************************************************/ |
| 278 | |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 279 | #ifdef DETECT_VCC_BY_ADC |
| 280 | |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 281 | static volatile int adc_triggered = 0; |
Harald Welte | 28772eb | 2016-03-20 15:44:52 +0100 | [diff] [blame] | 282 | static int adc_sam3s_reva_errata = 0; |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 283 | |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 284 | static int card_vcc_adc_init(void) |
| 285 | { |
Harald Welte | 622b6be | 2016-03-20 16:43:59 +0100 | [diff] [blame] | 286 | uint32_t chip_arch = CHIPID->CHIPID_CIDR & CHIPID_CIDR_ARCH_Msk; |
| 287 | uint32_t chip_ver = CHIPID->CHIPID_CIDR & CHIPID_CIDR_VERSION_Msk; |
Harald Welte | 28772eb | 2016-03-20 15:44:52 +0100 | [diff] [blame] | 288 | |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 289 | PMC_EnablePeripheral(ID_ADC); |
| 290 | |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 291 | ADC->ADC_CR |= ADC_CR_SWRST; |
Harald Welte | 28772eb | 2016-03-20 15:44:52 +0100 | [diff] [blame] | 292 | if (chip_ver == 0 && |
| 293 | (chip_arch == CHIPID_CIDR_ARCH_SAM3SxA || |
| 294 | chip_arch == CHIPID_CIDR_ARCH_SAM3SxB || |
| 295 | chip_arch == CHIPID_CIDR_ARCH_SAM3SxC)) { |
| 296 | TRACE_INFO("Enabling Rev.A ADC Errata work-around\r\n"); |
| 297 | adc_sam3s_reva_errata = 1; |
| 298 | } |
| 299 | |
| 300 | if (adc_sam3s_reva_errata) { |
| 301 | /* Errata Work-Around to clear EOCx flags */ |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 302 | volatile uint32_t foo; |
| 303 | int i; |
| 304 | for (i = 0; i < 16; i++) |
| 305 | foo = ADC->ADC_CDR[i]; |
| 306 | } |
| 307 | |
| 308 | /* Initialize ADC for AD7 / AD6, fADC=48/24=2MHz */ |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 309 | ADC->ADC_MR = ADC_MR_TRGEN_DIS | ADC_MR_LOWRES_BITS_12 | |
| 310 | ADC_MR_SLEEP_NORMAL | ADC_MR_FWUP_OFF | |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 311 | ADC_MR_FREERUN_OFF | ADC_MR_PRESCAL(23) | |
| 312 | ADC_MR_STARTUP_SUT8 | ADC_MR_SETTLING(3) | |
| 313 | ADC_MR_ANACH_NONE | ADC_MR_TRACKTIM(4) | |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 314 | ADC_MR_TRANSFER(1) | ADC_MR_USEQ_NUM_ORDER; |
| 315 | /* enable AD6 + AD7 channels */ |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 316 | ADC->ADC_CHER = ADC_CHER_CH7; |
| 317 | ADC->ADC_IER = ADC_IER_EOC7; |
| 318 | #ifdef CARDEMU_SECOND_UART |
| 319 | ADC->ADC_CHER |= ADC_CHER_CH6; |
| 320 | ADC->ADC_IER |= ADC_IER_EOC6; |
| 321 | #endif |
| 322 | NVIC_EnableIRQ(ADC_IRQn); |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 323 | ADC->ADC_CR |= ADC_CR_START; |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 324 | |
| 325 | return 0; |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 326 | } |
| 327 | |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 328 | #define VCC_UV_THRESH_1V8 1500000 |
Kévin Redon | b7f94dc | 2019-11-26 13:49:45 +0100 | [diff] [blame] | 329 | #define VCC_UV_THRESH_3V 2500000 |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 330 | |
| 331 | static void process_vcc_adc(struct cardem_inst *ci) |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 332 | { |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 333 | if (ci->vcc_uv >= VCC_UV_THRESH_3V) |
| 334 | ci->vcc_active = true; |
| 335 | else |
| 336 | ci->vcc_active = false; |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 337 | } |
| 338 | |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 339 | void ADC_IrqHandler(void) |
| 340 | { |
| 341 | #ifdef CARDEMU_SECOND_UART |
| 342 | if (ADC->ADC_ISR & ADC_ISR_EOC6) { |
| 343 | uint16_t val = ADC->ADC_CDR[6] & 0xFFF; |
| 344 | cardem_inst[1].vcc_uv = adc2uv(val); |
| 345 | process_vcc_adc(&cardem_inst[1]); |
Harald Welte | 28772eb | 2016-03-20 15:44:52 +0100 | [diff] [blame] | 346 | if (adc_sam3s_reva_errata) { |
| 347 | /* Errata: START doesn't start a conversion |
| 348 | * sequence, but only a single conversion */ |
| 349 | ADC->ADC_CR |= ADC_CR_START; |
| 350 | } |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 351 | } |
| 352 | #endif |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 353 | |
| 354 | if (ADC->ADC_ISR & ADC_ISR_EOC7) { |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 355 | uint16_t val = ADC->ADC_CDR[7] & 0xFFF; |
| 356 | cardem_inst[0].vcc_uv = adc2uv(val); |
| 357 | process_vcc_adc(&cardem_inst[0]); |
| 358 | ADC->ADC_CR |= ADC_CR_START; |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 359 | adc_triggered = 1; |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 360 | } |
| 361 | } |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 362 | #endif /* DETECT_VCC_BY_ADC */ |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 363 | |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 364 | |
| 365 | /* called from main loop; dispatches card I/O state changes to card_emu from main loop */ |
| 366 | static void process_io_statechg(struct cardem_inst *ci) |
| 367 | { |
| 368 | if (ci->vcc_active != ci->vcc_active_last) { |
| 369 | card_emu_io_statechg(ci->ch, CARD_IO_VCC, ci->vcc_active); |
| 370 | /* FIXME do this for real */ |
| 371 | card_emu_io_statechg(ci->ch, CARD_IO_CLK, ci->vcc_active); |
| 372 | ci->vcc_active_last = ci->vcc_active; |
| 373 | } |
| 374 | |
| 375 | if (ci->rst_active != ci->rst_active_last) { |
| 376 | card_emu_io_statechg(ci->ch, CARD_IO_RST, ci->rst_active); |
| 377 | ci->rst_active_last = ci->rst_active; |
| 378 | } |
| 379 | } |
| 380 | |
Harald Welte | 419eb8a | 2016-03-20 10:04:03 +0100 | [diff] [blame] | 381 | /*********************************************************************** |
Kévin Redon | 680bdab | 2018-07-18 14:00:57 +0200 | [diff] [blame] | 382 | * Core USB / main loop integration |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 383 | ***********************************************************************/ |
| 384 | |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 385 | static void usim1_rst_irqhandler(const Pin *pPin) |
| 386 | { |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 387 | cardem_inst[0].rst_active = PIO_Get(&pin_usim1_rst) ? false : true; |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 388 | } |
| 389 | |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 390 | #ifndef DETECT_VCC_BY_ADC |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 391 | static void usim1_vcc_irqhandler(const Pin *pPin) |
| 392 | { |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 393 | cardem_inst[0].vcc_active = PIO_Get(&pin_usim1_vcc) ? true : false; |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 394 | } |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 395 | #endif /* !DETECT_VCC_BY_ADC */ |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 396 | |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 397 | #ifdef CARDEMU_SECOND_UART |
| 398 | static void usim2_rst_irqhandler(const Pin *pPin) |
| 399 | { |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 400 | cardem_inst[1].rst_active = PIO_Get(&pin_usim2_rst) ? false : true; |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 401 | } |
| 402 | |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 403 | #ifndef DETECT_VCC_BY_ADC |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 404 | static void usim2_vcc_irqhandler(const Pin *pPin) |
| 405 | { |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 406 | cardem_inst[1].vcc_active = PIO_Get(&pin_usim2_vcc) ? true : false; |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 407 | } |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 408 | #endif /* !DETECT_VCC_BY_ADC */ |
| 409 | #endif /* CARDEMU_SECOND_UART */ |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 410 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 411 | /* executed once at system boot for each config */ |
| 412 | void mode_cardemu_configure(void) |
| 413 | { |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 414 | TRACE_ENTRY(); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | /* called if config is activated */ |
| 418 | void mode_cardemu_init(void) |
| 419 | { |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 420 | int i; |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 421 | |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 422 | TRACE_ENTRY(); |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 423 | |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 424 | #ifdef PINS_CARDSIM |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 425 | PIO_Configure(pins_cardsim, PIO_LISTSIZE(pins_cardsim)); |
Harald Welte | 6d1128e | 2017-05-05 20:23:10 +0200 | [diff] [blame] | 426 | #endif |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 427 | #ifdef DETECT_VCC_BY_ADC |
| 428 | card_vcc_adc_init(); |
| 429 | #endif /* DETECT_VCC_BY_ADC */ |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 430 | |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 431 | INIT_LLIST_HEAD(&cardem_inst[0].usb_out_queue); |
| 432 | rbuf_reset(&cardem_inst[0].rb); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 433 | PIO_Configure(pins_usim1, PIO_LISTSIZE(pins_usim1)); |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 434 | |
| 435 | /* configure USART as ISO-7816 slave (e.g. card) */ |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 436 | ISO7816_Init(&cardem_inst[0].usart_info, CLK_SLAVE); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 437 | NVIC_EnableIRQ(USART1_IRQn); |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 438 | PIO_ConfigureIt(&pin_usim1_rst, usim1_rst_irqhandler); |
| 439 | PIO_EnableIt(&pin_usim1_rst); |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 440 | |
| 441 | /* obtain current RST state */ |
| 442 | usim1_rst_irqhandler(&pin_usim1_rst); |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 443 | #ifndef DETECT_VCC_BY_ADC |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 444 | PIO_ConfigureIt(&pin_usim1_vcc, usim1_vcc_irqhandler); |
| 445 | PIO_EnableIt(&pin_usim1_vcc); |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 446 | |
| 447 | /* obtain current VCC state */ |
| 448 | usim1_vcc_irqhandler(&pin_usim1_vcc); |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 449 | #else |
| 450 | do {} while (!adc_triggered); /* wait for first ADC reading */ |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 451 | #endif /* DETECT_VCC_BY_ADC */ |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 452 | |
| 453 | cardem_inst[0].ch = card_emu_init(0, 2, 0, SIMTRACE_CARDEM_USB_EP_USIM1_DATAIN, |
| 454 | SIMTRACE_CARDEM_USB_EP_USIM1_INT, cardem_inst[0].vcc_active, |
| 455 | cardem_inst[0].rst_active, cardem_inst[0].vcc_active); |
Harald Welte | c47fc5f | 2017-05-11 16:51:57 +0200 | [diff] [blame] | 456 | sim_switch_use_physical(0, 1); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 457 | |
| 458 | #ifdef CARDEMU_SECOND_UART |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 459 | INIT_LLIST_HEAD(&cardem_inst[1].usb_out_queue); |
| 460 | rbuf_reset(&cardem_inst[1].rb); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 461 | PIO_Configure(pins_usim2, PIO_LISTSIZE(pins_usim2)); |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 462 | ISO7816_Init(&cardem_inst[1].usart_info, CLK_SLAVE); |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 463 | /* TODO enable timeout */ |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 464 | NVIC_EnableIRQ(USART0_IRQn); |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 465 | PIO_ConfigureIt(&pin_usim2_rst, usim2_rst_irqhandler); |
| 466 | PIO_EnableIt(&pin_usim2_rst); |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 467 | usim2_rst_irqhandler(&pin_usim2_rst); /* obtain current RST state */ |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 468 | #ifndef DETECT_VCC_BY_ADC |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 469 | PIO_ConfigureIt(&pin_usim2_vcc, usim2_vcc_irqhandler); |
| 470 | PIO_EnableIt(&pin_usim2_vcc); |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 471 | usim2_vcc_irqhandler(&pin_usim2_vcc); /* obtain current VCC state */ |
| 472 | #else |
| 473 | do {} while (!adc_triggered); /* wait for first ADC reading */ |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 474 | #endif /* DETECT_VCC_BY_ADC */ |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 475 | |
| 476 | cardem_inst[1].ch = card_emu_init(1, 0, 1, SIMTRACE_CARDEM_USB_EP_USIM2_DATAIN, |
| 477 | SIMTRACE_CARDEM_USB_EP_USIM2_INT, cardem_inst[1].vcc_active, |
| 478 | cardem_inst[1].rst_active, cardem_inst[1].vcc_active); |
Harald Welte | c47fc5f | 2017-05-11 16:51:57 +0200 | [diff] [blame] | 479 | sim_switch_use_physical(1, 1); |
Kévin Redon | b218cc3 | 2020-03-26 01:46:45 +0100 | [diff] [blame] | 480 | /* TODO check RST and VCC */ |
Harald Welte | 07872b6 | 2016-03-20 11:45:36 +0100 | [diff] [blame] | 481 | #endif /* CARDEMU_SECOND_UART */ |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | /* called if config is deactivated */ |
| 485 | void mode_cardemu_exit(void) |
| 486 | { |
Harald Welte | bd71768 | 2016-02-28 19:30:05 +0100 | [diff] [blame] | 487 | TRACE_ENTRY(); |
| 488 | |
Harald Welte | 7abdb51 | 2016-03-03 17:48:32 +0100 | [diff] [blame] | 489 | /* FIXME: stop tc_fdt */ |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 490 | /* FIXME: release all msg, unlink them from any queue */ |
Harald Welte | 7abdb51 | 2016-03-03 17:48:32 +0100 | [diff] [blame] | 491 | |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 492 | PIO_DisableIt(&pin_usim1_rst); |
| 493 | PIO_DisableIt(&pin_usim1_vcc); |
| 494 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 495 | NVIC_DisableIRQ(USART1_IRQn); |
| 496 | USART_SetTransmitterEnabled(USART1, 0); |
| 497 | USART_SetReceiverEnabled(USART1, 0); |
| 498 | |
| 499 | #ifdef CARDEMU_SECOND_UART |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 500 | PIO_DisableIt(&pin_usim2_rst); |
| 501 | PIO_DisableIt(&pin_usim2_vcc); |
| 502 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 503 | NVIC_DisableIRQ(USART0_IRQn); |
| 504 | USART_SetTransmitterEnabled(USART0, 0); |
| 505 | USART_SetReceiverEnabled(USART0, 0); |
| 506 | #endif |
| 507 | } |
| 508 | |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 509 | /* handle a single USB command as received from the USB host */ |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 510 | static void dispatch_usb_command_generic(struct msgb *msg, struct cardem_inst *ci) |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 511 | { |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 512 | struct simtrace_msg_hdr *hdr; |
| 513 | |
| 514 | hdr = (struct simtrace_msg_hdr *) msg->l1h; |
| 515 | switch (hdr->msg_type) { |
| 516 | case SIMTRACE_CMD_BD_BOARD_INFO: |
| 517 | break; |
| 518 | default: |
| 519 | break; |
| 520 | } |
| 521 | usb_buf_free(msg); |
| 522 | } |
| 523 | |
| 524 | /* handle a single USB command as received from the USB host */ |
| 525 | static void dispatch_usb_command_cardem(struct msgb *msg, struct cardem_inst *ci) |
| 526 | { |
| 527 | struct simtrace_msg_hdr *hdr; |
Harald Welte | 06b27f6 | 2016-03-02 14:26:38 +0100 | [diff] [blame] | 528 | struct cardemu_usb_msg_set_atr *atr; |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 529 | struct cardemu_usb_msg_cardinsert *cardins; |
Harald Welte | a5bbe78 | 2019-12-16 10:39:55 +0100 | [diff] [blame] | 530 | struct cardemu_usb_msg_config *cfg; |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 531 | struct llist_head *queue; |
| 532 | |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 533 | hdr = (struct simtrace_msg_hdr *) msg->l1h; |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 534 | switch (hdr->msg_type) { |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 535 | case SIMTRACE_MSGT_DT_CEMU_TX_DATA: |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 536 | queue = card_emu_get_uart_tx_queue(ci->ch); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 537 | llist_add_tail(&msg->list, queue); |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 538 | card_emu_have_new_uart_tx(ci->ch); |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 539 | break; |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 540 | case SIMTRACE_MSGT_DT_CEMU_SET_ATR: |
| 541 | atr = (struct cardemu_usb_msg_set_atr *) msg->l2h; |
Harald Welte | d295b92 | 2016-03-18 21:01:36 +0100 | [diff] [blame] | 542 | card_emu_set_atr(ci->ch, atr->atr, atr->atr_len); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 543 | usb_buf_free(msg); |
Harald Welte | 06b27f6 | 2016-03-02 14:26:38 +0100 | [diff] [blame] | 544 | break; |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 545 | case SIMTRACE_MSGT_DT_CEMU_CARDINSERT: |
| 546 | cardins = (struct cardemu_usb_msg_cardinsert *) msg->l2h; |
Harald Welte | 965d5c9 | 2017-11-03 20:47:12 +0100 | [diff] [blame] | 547 | if (!ci->pin_insert.pio) { |
| 548 | TRACE_INFO("%u: skipping unsupported card_insert to %s\r\n", |
| 549 | ci->num, cardins->card_insert ? "INSERTED" : "REMOVED"); |
Harald Welte | 56be0bf | 2019-12-14 23:23:36 +0100 | [diff] [blame] | 550 | usb_buf_free(msg); |
Harald Welte | 965d5c9 | 2017-11-03 20:47:12 +0100 | [diff] [blame] | 551 | break; |
| 552 | } |
Harald Welte | dde112e | 2016-03-20 16:42:11 +0100 | [diff] [blame] | 553 | TRACE_INFO("%u: set card_insert to %s\r\n", ci->num, |
| 554 | cardins->card_insert ? "INSERTED" : "REMOVED"); |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 555 | if (cardins->card_insert) |
| 556 | PIO_Set(&ci->pin_insert); |
| 557 | else |
| 558 | PIO_Clear(&ci->pin_insert); |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 559 | usb_buf_free(msg); |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 560 | break; |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 561 | case SIMTRACE_MSGT_BD_CEMU_STATUS: |
Harald Welte | 140f007 | 2019-12-16 10:23:32 +0100 | [diff] [blame] | 562 | card_emu_report_status(ci->ch, false); |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 563 | usb_buf_free(msg); |
Harald Welte | ff16065 | 2016-03-19 21:59:06 +0100 | [diff] [blame] | 564 | break; |
Harald Welte | a5bbe78 | 2019-12-16 10:39:55 +0100 | [diff] [blame] | 565 | case SIMTRACE_MSGT_BD_CEMU_CONFIG: |
| 566 | cfg = (struct cardemu_usb_msg_config *) msg->l2h; |
| 567 | card_emu_set_config(ci->ch, cfg, msgb_l2len(msg)); |
| 568 | break; |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 569 | case SIMTRACE_MSGT_BD_CEMU_STATS: |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 570 | default: |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 571 | /* FIXME: Send Error */ |
| 572 | usb_buf_free(msg); |
| 573 | break; |
| 574 | } |
| 575 | } |
| 576 | |
Harald Welte | fc87c24 | 2017-11-28 19:17:27 +0100 | [diff] [blame] | 577 | #ifdef PINS_PERST |
| 578 | #include "wwan_perst.h" |
| 579 | #endif |
| 580 | |
Harald Welte | 2e9254a | 2017-05-09 06:30:04 +0200 | [diff] [blame] | 581 | static int usb_command_modem_reset(struct msgb *msg, struct cardem_inst *ci) |
| 582 | { |
Harald Welte | b91f6ad | 2017-05-10 22:51:30 +0200 | [diff] [blame] | 583 | struct st_modem_reset *mr = (struct st_modem_reset *) msg->l2h; |
Harald Welte | 2e9254a | 2017-05-09 06:30:04 +0200 | [diff] [blame] | 584 | |
| 585 | if (msgb_l2len(msg) < sizeof(*mr)) |
| 586 | return -1; |
| 587 | |
| 588 | switch (mr->asserted) { |
Harald Welte | fc87c24 | 2017-11-28 19:17:27 +0100 | [diff] [blame] | 589 | #ifdef PINS_PERST |
Harald Welte | 2e9254a | 2017-05-09 06:30:04 +0200 | [diff] [blame] | 590 | case 0: |
| 591 | wwan_perst_set(ci->num, 0); |
| 592 | break; |
| 593 | case 1: |
| 594 | wwan_perst_set(ci->num, 1); |
| 595 | break; |
| 596 | case 2: |
| 597 | wwan_perst_do_reset_pulse(ci->num, mr->pulse_duration_msec); |
| 598 | break; |
Harald Welte | fc87c24 | 2017-11-28 19:17:27 +0100 | [diff] [blame] | 599 | #endif |
Harald Welte | 2e9254a | 2017-05-09 06:30:04 +0200 | [diff] [blame] | 600 | default: |
| 601 | return -1; |
| 602 | } |
| 603 | |
| 604 | return 0; |
| 605 | } |
| 606 | |
Harald Welte | 5c583d3 | 2017-05-09 06:46:47 +0200 | [diff] [blame] | 607 | static int usb_command_sim_select(struct msgb *msg, struct cardem_inst *ci) |
| 608 | { |
Harald Welte | b91f6ad | 2017-05-10 22:51:30 +0200 | [diff] [blame] | 609 | struct st_modem_sim_select *mss = (struct st_modem_sim_select *) msg->l2h; |
Harald Welte | 5c583d3 | 2017-05-09 06:46:47 +0200 | [diff] [blame] | 610 | |
| 611 | if (msgb_l2len(msg) < sizeof(*mss)) |
| 612 | return -1; |
| 613 | |
| 614 | if (mss->remote_sim) |
| 615 | sim_switch_use_physical(ci->num, 0); |
| 616 | else |
| 617 | sim_switch_use_physical(ci->num, 1); |
| 618 | |
| 619 | return 0; |
| 620 | } |
| 621 | |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 622 | /* handle a single USB command as received from the USB host */ |
| 623 | static void dispatch_usb_command_modem(struct msgb *msg, struct cardem_inst *ci) |
| 624 | { |
| 625 | struct simtrace_msg_hdr *hdr; |
| 626 | |
| 627 | hdr = (struct simtrace_msg_hdr *) msg->l1h; |
| 628 | switch (hdr->msg_type) { |
| 629 | case SIMTRACE_MSGT_DT_MODEM_RESET: |
Harald Welte | 2e9254a | 2017-05-09 06:30:04 +0200 | [diff] [blame] | 630 | usb_command_modem_reset(msg, ci); |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 631 | break; |
| 632 | case SIMTRACE_MSGT_DT_MODEM_SIM_SELECT: |
Harald Welte | 5c583d3 | 2017-05-09 06:46:47 +0200 | [diff] [blame] | 633 | usb_command_sim_select(msg, ci); |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 634 | break; |
| 635 | case SIMTRACE_MSGT_BD_MODEM_STATUS: |
| 636 | break; |
| 637 | default: |
| 638 | break; |
| 639 | } |
| 640 | usb_buf_free(msg); |
| 641 | } |
| 642 | |
| 643 | /* handle a single USB command as received from the USB host */ |
| 644 | static void dispatch_usb_command(struct msgb *msg, struct cardem_inst *ci) |
| 645 | { |
Harald Welte | b91f6ad | 2017-05-10 22:51:30 +0200 | [diff] [blame] | 646 | struct simtrace_msg_hdr *sh = (struct simtrace_msg_hdr *) msg->l1h; |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 647 | |
| 648 | if (msgb_length(msg) < sizeof(*sh)) { |
| 649 | /* FIXME: Error */ |
| 650 | usb_buf_free(msg); |
| 651 | return; |
| 652 | } |
Kévin Redon | b605388 | 2018-07-18 14:06:13 +0200 | [diff] [blame] | 653 | msg->l2h = msg->l1h + sizeof(*sh); |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 654 | |
| 655 | switch (sh->msg_class) { |
| 656 | case SIMTRACE_MSGC_GENERIC: |
| 657 | dispatch_usb_command_generic(msg, ci); |
| 658 | break; |
| 659 | case SIMTRACE_MSGC_CARDEM: |
| 660 | dispatch_usb_command_cardem(msg, ci); |
| 661 | break; |
| 662 | case SIMTRACE_MSGC_MODEM: |
Harald Welte | 23c00b6 | 2017-05-11 01:11:43 +0200 | [diff] [blame] | 663 | /* FIXME: Find out why this fails if used for != |
| 664 | * MSGC_MODEM ?!? */ |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 665 | dispatch_usb_command_modem(msg, ci); |
| 666 | break; |
| 667 | default: |
| 668 | /* FIXME: Send Error */ |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 669 | usb_buf_free(msg); |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 670 | break; |
| 671 | } |
| 672 | } |
| 673 | |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 674 | static void dispatch_received_msg(struct msgb *msg, struct cardem_inst *ci) |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 675 | { |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 676 | struct msgb *segm; |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 677 | struct simtrace_msg_hdr *mh; |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 678 | |
| 679 | /* check if we have multiple concatenated commands in |
| 680 | * one message. USB endpoints are streams that don't |
| 681 | * preserve the message boundaries */ |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 682 | mh = (struct simtrace_msg_hdr *) msg->data; |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 683 | if (mh->msg_len == msgb_length(msg)) { |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 684 | /* fast path: only one message in buffer */ |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 685 | dispatch_usb_command(msg, ci); |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 686 | return; |
| 687 | } |
| 688 | |
| 689 | /* slow path: iterate over list of messages, allocating one new |
| 690 | * reqe_ctx per segment */ |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 691 | while (1) { |
Harald Welte | 25a9a80 | 2017-05-08 13:30:09 +0200 | [diff] [blame] | 692 | mh = (struct simtrace_msg_hdr *) msg->data; |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 693 | |
| 694 | segm = usb_buf_alloc(ci->ep_out); |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 695 | if (!segm) { |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 696 | TRACE_ERROR("%u: ENOMEM during msg segmentation\r\n", |
Harald Welte | dde112e | 2016-03-20 16:42:11 +0100 | [diff] [blame] | 697 | ci->num); |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 698 | break; |
| 699 | } |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 700 | |
| 701 | if (mh->msg_len > msgb_length(msg)) { |
Harald Welte | 823f453 | 2020-03-01 15:58:12 +0100 | [diff] [blame] | 702 | TRACE_ERROR("%u: Unexpected large message (%u bytes)\r\n", |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 703 | ci->num, mh->msg_len); |
| 704 | usb_buf_free(segm); |
Harald Welte | e6806e5 | 2020-03-01 15:56:07 +0100 | [diff] [blame] | 705 | break; |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 706 | } else { |
| 707 | uint8_t *cur = msgb_put(segm, mh->msg_len); |
| 708 | segm->l1h = segm->head; |
| 709 | memcpy(cur, mh, mh->msg_len); |
| 710 | dispatch_usb_command(segm, ci); |
| 711 | } |
| 712 | /* pull this message */ |
| 713 | msgb_pull(msg, mh->msg_len); |
| 714 | /* abort if we're done */ |
| 715 | if (msgb_length(msg) <= 0) |
| 716 | break; |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 717 | } |
| 718 | |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 719 | usb_buf_free(msg); |
Harald Welte | b26d003 | 2016-03-19 13:33:02 +0100 | [diff] [blame] | 720 | } |
| 721 | |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 722 | /* iterate over the queue of incoming USB commands and dispatch/execute |
| 723 | * them */ |
Harald Welte | 9f240b6 | 2016-03-18 10:32:56 +0100 | [diff] [blame] | 724 | static void process_any_usb_commands(struct llist_head *main_q, |
| 725 | struct cardem_inst *ci) |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 726 | { |
Harald Welte | 9f240b6 | 2016-03-18 10:32:56 +0100 | [diff] [blame] | 727 | struct llist_head *lh; |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 728 | struct msgb *msg; |
Harald Welte | 9f240b6 | 2016-03-18 10:32:56 +0100 | [diff] [blame] | 729 | int i; |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 730 | |
Harald Welte | 9f240b6 | 2016-03-18 10:32:56 +0100 | [diff] [blame] | 731 | /* limit the number of iterations to 10, to ensure we don't get |
| 732 | * stuck here without returning to main loop processing */ |
| 733 | for (i = 0; i < 10; i++) { |
| 734 | /* de-queue the list head in an irq-safe way */ |
| 735 | lh = llist_head_dequeue_irqsafe(main_q); |
| 736 | if (!lh) |
| 737 | break; |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 738 | msg = llist_entry(lh, struct msgb, list); |
| 739 | dispatch_received_msg(msg, ci); |
Harald Welte | 5820ea9 | 2016-03-16 22:12:00 +0100 | [diff] [blame] | 740 | } |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 741 | } |
| 742 | |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 743 | /* main loop function, called repeatedly */ |
| 744 | void mode_cardemu_run(void) |
| 745 | { |
Harald Welte | acae412 | 2016-03-02 10:27:58 +0100 | [diff] [blame] | 746 | struct llist_head *queue; |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 747 | unsigned int i; |
Harald Welte | acae412 | 2016-03-02 10:27:58 +0100 | [diff] [blame] | 748 | |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 749 | for (i = 0; i < ARRAY_SIZE(cardem_inst); i++) { |
| 750 | struct cardem_inst *ci = &cardem_inst[i]; |
| 751 | |
Harald Welte | 54cb3d0 | 2016-02-29 14:12:40 +0100 | [diff] [blame] | 752 | /* drain the ring buffer from UART into card_emu */ |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 753 | while (1) { |
| 754 | __disable_irq(); |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 755 | if (rbuf_is_empty(&ci->rb)) { |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 756 | __enable_irq(); |
| 757 | break; |
| 758 | } |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 759 | uint8_t byte = rbuf_read(&ci->rb); |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 760 | __enable_irq(); |
Harald Welte | 13e8202 | 2016-03-02 15:17:53 +0100 | [diff] [blame] | 761 | card_emu_process_rx_byte(ci->ch, byte); |
Harald Welte | dde112e | 2016-03-20 16:42:11 +0100 | [diff] [blame] | 762 | //TRACE_ERROR("%uRx%02x\r\n", i, byte); |
Harald Welte | c0bd7f0 | 2016-02-29 10:13:33 +0100 | [diff] [blame] | 763 | } |
Harald Welte | acae412 | 2016-03-02 10:27:58 +0100 | [diff] [blame] | 764 | |
Harald Welte | fa197ca | 2019-12-14 22:13:29 +0100 | [diff] [blame] | 765 | process_io_statechg(ci); |
| 766 | |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 767 | /* first try to send any pending messages on IRQ */ |
| 768 | usb_refill_to_host(ci->ep_int); |
| 769 | |
| 770 | /* then try to send any pending messages on IN */ |
| 771 | usb_refill_to_host(ci->ep_in); |
Harald Welte | acae412 | 2016-03-02 10:27:58 +0100 | [diff] [blame] | 772 | |
Harald Welte | ebb80ed | 2016-03-02 13:56:59 +0100 | [diff] [blame] | 773 | /* ensure we can handle incoming USB messages from the |
| 774 | * host */ |
Harald Welte | 8e7fca3 | 2017-05-07 16:14:33 +0200 | [diff] [blame] | 775 | usb_refill_from_host(ci->ep_out); |
| 776 | queue = usb_get_queue(ci->ep_out); |
Harald Welte | 0eaa992 | 2016-03-04 03:03:49 +0100 | [diff] [blame] | 777 | process_any_usb_commands(queue, ci); |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 778 | } |
Harald Welte | 2a6d3af | 2016-02-28 19:29:14 +0100 | [diff] [blame] | 779 | } |