balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 1 | /* |
| 2 | * FTDI FT232BM Device emulation |
| 3 | * |
| 4 | * Copyright (c) 2006 CodeSourcery. |
| 5 | * Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org> |
| 6 | * Written by Paul Brook, reused for FTDI by Samuel Thibault |
| 7 | * |
| 8 | * This code is licenced under the LGPL. |
| 9 | */ |
| 10 | |
| 11 | #include "qemu-common.h" |
| 12 | #include "usb.h" |
| 13 | #include "qemu-char.h" |
| 14 | |
| 15 | //#define DEBUG_Serial |
| 16 | |
| 17 | #ifdef DEBUG_Serial |
Blue Swirl | 001faf3 | 2009-05-13 17:53:17 +0000 | [diff] [blame] | 18 | #define DPRINTF(fmt, ...) \ |
| 19 | do { printf("usb-serial: " fmt , ## __VA_ARGS__); } while (0) |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 20 | #else |
Blue Swirl | 001faf3 | 2009-05-13 17:53:17 +0000 | [diff] [blame] | 21 | #define DPRINTF(fmt, ...) do {} while(0) |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 22 | #endif |
| 23 | |
| 24 | #define RECV_BUF 384 |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 25 | |
| 26 | /* Commands */ |
| 27 | #define FTDI_RESET 0 |
| 28 | #define FTDI_SET_MDM_CTRL 1 |
| 29 | #define FTDI_SET_FLOW_CTRL 2 |
| 30 | #define FTDI_SET_BAUD 3 |
| 31 | #define FTDI_SET_DATA 4 |
| 32 | #define FTDI_GET_MDM_ST 5 |
| 33 | #define FTDI_SET_EVENT_CHR 6 |
| 34 | #define FTDI_SET_ERROR_CHR 7 |
| 35 | #define FTDI_SET_LATENCY 9 |
| 36 | #define FTDI_GET_LATENCY 10 |
| 37 | |
| 38 | #define DeviceOutVendor ((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8) |
| 39 | #define DeviceInVendor ((USB_DIR_IN |USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8) |
| 40 | |
| 41 | /* RESET */ |
| 42 | |
| 43 | #define FTDI_RESET_SIO 0 |
| 44 | #define FTDI_RESET_RX 1 |
| 45 | #define FTDI_RESET_TX 2 |
| 46 | |
| 47 | /* SET_MDM_CTRL */ |
| 48 | |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 49 | #define FTDI_DTR 1 |
aurel32 | abb8a13 | 2008-08-13 04:23:17 +0000 | [diff] [blame] | 50 | #define FTDI_SET_DTR (FTDI_DTR << 8) |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 51 | #define FTDI_RTS 2 |
aurel32 | abb8a13 | 2008-08-13 04:23:17 +0000 | [diff] [blame] | 52 | #define FTDI_SET_RTS (FTDI_RTS << 8) |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 53 | |
| 54 | /* SET_FLOW_CTRL */ |
| 55 | |
| 56 | #define FTDI_RTS_CTS_HS 1 |
| 57 | #define FTDI_DTR_DSR_HS 2 |
| 58 | #define FTDI_XON_XOFF_HS 4 |
| 59 | |
| 60 | /* SET_DATA */ |
| 61 | |
| 62 | #define FTDI_PARITY (0x7 << 8) |
| 63 | #define FTDI_ODD (0x1 << 8) |
| 64 | #define FTDI_EVEN (0x2 << 8) |
| 65 | #define FTDI_MARK (0x3 << 8) |
| 66 | #define FTDI_SPACE (0x4 << 8) |
| 67 | |
| 68 | #define FTDI_STOP (0x3 << 11) |
| 69 | #define FTDI_STOP1 (0x0 << 11) |
| 70 | #define FTDI_STOP15 (0x1 << 11) |
| 71 | #define FTDI_STOP2 (0x2 << 11) |
| 72 | |
| 73 | /* GET_MDM_ST */ |
| 74 | /* TODO: should be sent every 40ms */ |
| 75 | #define FTDI_CTS (1<<4) // CTS line status |
| 76 | #define FTDI_DSR (1<<5) // DSR line status |
| 77 | #define FTDI_RI (1<<6) // RI line status |
| 78 | #define FTDI_RLSD (1<<7) // Receive Line Signal Detect |
| 79 | |
| 80 | /* Status */ |
| 81 | |
| 82 | #define FTDI_DR (1<<0) // Data Ready |
| 83 | #define FTDI_OE (1<<1) // Overrun Err |
| 84 | #define FTDI_PE (1<<2) // Parity Err |
| 85 | #define FTDI_FE (1<<3) // Framing Err |
| 86 | #define FTDI_BI (1<<4) // Break Interrupt |
| 87 | #define FTDI_THRE (1<<5) // Transmitter Holding Register |
| 88 | #define FTDI_TEMT (1<<6) // Transmitter Empty |
| 89 | #define FTDI_FIFO (1<<7) // Error in FIFO |
| 90 | |
| 91 | typedef struct { |
| 92 | USBDevice dev; |
| 93 | uint16_t vendorid; |
| 94 | uint16_t productid; |
| 95 | uint8_t recv_buf[RECV_BUF]; |
aurel32 | 8109b9b | 2008-09-17 22:04:21 +0000 | [diff] [blame] | 96 | uint16_t recv_ptr; |
| 97 | uint16_t recv_used; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 98 | uint8_t event_chr; |
| 99 | uint8_t error_chr; |
| 100 | uint8_t event_trigger; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 101 | QEMUSerialSetParams params; |
| 102 | int latency; /* ms */ |
| 103 | CharDriverState *cs; |
| 104 | } USBSerialState; |
| 105 | |
| 106 | static const uint8_t qemu_serial_dev_descriptor[] = { |
| 107 | 0x12, /* u8 bLength; */ |
| 108 | 0x01, /* u8 bDescriptorType; Device */ |
| 109 | 0x00, 0x02, /* u16 bcdUSB; v2.0 */ |
| 110 | |
| 111 | 0x00, /* u8 bDeviceClass; */ |
| 112 | 0x00, /* u8 bDeviceSubClass; */ |
| 113 | 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
| 114 | 0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
| 115 | |
| 116 | /* Vendor and product id are arbitrary. */ |
| 117 | 0x03, 0x04, /* u16 idVendor; */ |
| 118 | 0x00, 0xFF, /* u16 idProduct; */ |
| 119 | 0x00, 0x04, /* u16 bcdDevice */ |
| 120 | |
| 121 | 0x01, /* u8 iManufacturer; */ |
| 122 | 0x02, /* u8 iProduct; */ |
| 123 | 0x03, /* u8 iSerialNumber; */ |
| 124 | 0x01 /* u8 bNumConfigurations; */ |
| 125 | }; |
| 126 | |
| 127 | static const uint8_t qemu_serial_config_descriptor[] = { |
| 128 | |
| 129 | /* one configuration */ |
| 130 | 0x09, /* u8 bLength; */ |
| 131 | 0x02, /* u8 bDescriptorType; Configuration */ |
| 132 | 0x20, 0x00, /* u16 wTotalLength; */ |
| 133 | 0x01, /* u8 bNumInterfaces; (1) */ |
| 134 | 0x01, /* u8 bConfigurationValue; */ |
| 135 | 0x00, /* u8 iConfiguration; */ |
| 136 | 0x80, /* u8 bmAttributes; |
| 137 | Bit 7: must be set, |
| 138 | 6: Self-powered, |
| 139 | 5: Remote wakeup, |
| 140 | 4..0: resvd */ |
| 141 | 100/2, /* u8 MaxPower; */ |
| 142 | |
| 143 | /* one interface */ |
| 144 | 0x09, /* u8 if_bLength; */ |
| 145 | 0x04, /* u8 if_bDescriptorType; Interface */ |
| 146 | 0x00, /* u8 if_bInterfaceNumber; */ |
| 147 | 0x00, /* u8 if_bAlternateSetting; */ |
| 148 | 0x02, /* u8 if_bNumEndpoints; */ |
| 149 | 0xff, /* u8 if_bInterfaceClass; Vendor Specific */ |
| 150 | 0xff, /* u8 if_bInterfaceSubClass; Vendor Specific */ |
| 151 | 0xff, /* u8 if_bInterfaceProtocol; Vendor Specific */ |
| 152 | 0x02, /* u8 if_iInterface; */ |
| 153 | |
| 154 | /* Bulk-In endpoint */ |
| 155 | 0x07, /* u8 ep_bLength; */ |
| 156 | 0x05, /* u8 ep_bDescriptorType; Endpoint */ |
| 157 | 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
| 158 | 0x02, /* u8 ep_bmAttributes; Bulk */ |
| 159 | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
| 160 | 0x00, /* u8 ep_bInterval; */ |
| 161 | |
| 162 | /* Bulk-Out endpoint */ |
| 163 | 0x07, /* u8 ep_bLength; */ |
| 164 | 0x05, /* u8 ep_bDescriptorType; Endpoint */ |
| 165 | 0x02, /* u8 ep_bEndpointAddress; OUT Endpoint 2 */ |
| 166 | 0x02, /* u8 ep_bmAttributes; Bulk */ |
| 167 | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
| 168 | 0x00 /* u8 ep_bInterval; */ |
| 169 | }; |
| 170 | |
| 171 | static void usb_serial_reset(USBSerialState *s) |
| 172 | { |
| 173 | /* TODO: Set flow control to none */ |
| 174 | s->event_chr = 0x0d; |
| 175 | s->event_trigger = 0; |
| 176 | s->recv_ptr = 0; |
| 177 | s->recv_used = 0; |
| 178 | /* TODO: purge in char driver */ |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | static void usb_serial_handle_reset(USBDevice *dev) |
| 182 | { |
| 183 | USBSerialState *s = (USBSerialState *)dev; |
| 184 | |
| 185 | DPRINTF("Reset\n"); |
| 186 | |
| 187 | usb_serial_reset(s); |
| 188 | /* TODO: Reset char device, send BREAK? */ |
| 189 | } |
| 190 | |
aurel32 | abb8a13 | 2008-08-13 04:23:17 +0000 | [diff] [blame] | 191 | static uint8_t usb_get_modem_lines(USBSerialState *s) |
| 192 | { |
| 193 | int flags; |
| 194 | uint8_t ret; |
| 195 | |
| 196 | if (qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP) |
| 197 | return FTDI_CTS|FTDI_DSR|FTDI_RLSD; |
| 198 | |
| 199 | ret = 0; |
| 200 | if (flags & CHR_TIOCM_CTS) |
| 201 | ret |= FTDI_CTS; |
| 202 | if (flags & CHR_TIOCM_DSR) |
| 203 | ret |= FTDI_DSR; |
| 204 | if (flags & CHR_TIOCM_RI) |
| 205 | ret |= FTDI_RI; |
| 206 | if (flags & CHR_TIOCM_CAR) |
| 207 | ret |= FTDI_RLSD; |
| 208 | |
| 209 | return ret; |
| 210 | } |
| 211 | |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 212 | static int usb_serial_handle_control(USBDevice *dev, int request, int value, |
| 213 | int index, int length, uint8_t *data) |
| 214 | { |
| 215 | USBSerialState *s = (USBSerialState *)dev; |
| 216 | int ret = 0; |
| 217 | |
| 218 | //DPRINTF("got control %x, value %x\n",request, value); |
| 219 | switch (request) { |
| 220 | case DeviceRequest | USB_REQ_GET_STATUS: |
| 221 | data[0] = (0 << USB_DEVICE_SELF_POWERED) | |
| 222 | (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
| 223 | data[1] = 0x00; |
| 224 | ret = 2; |
| 225 | break; |
| 226 | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE: |
| 227 | if (value == USB_DEVICE_REMOTE_WAKEUP) { |
| 228 | dev->remote_wakeup = 0; |
| 229 | } else { |
| 230 | goto fail; |
| 231 | } |
| 232 | ret = 0; |
| 233 | break; |
| 234 | case DeviceOutRequest | USB_REQ_SET_FEATURE: |
| 235 | if (value == USB_DEVICE_REMOTE_WAKEUP) { |
| 236 | dev->remote_wakeup = 1; |
| 237 | } else { |
| 238 | goto fail; |
| 239 | } |
| 240 | ret = 0; |
| 241 | break; |
| 242 | case DeviceOutRequest | USB_REQ_SET_ADDRESS: |
| 243 | dev->addr = value; |
| 244 | ret = 0; |
| 245 | break; |
| 246 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
| 247 | switch(value >> 8) { |
| 248 | case USB_DT_DEVICE: |
| 249 | memcpy(data, qemu_serial_dev_descriptor, |
| 250 | sizeof(qemu_serial_dev_descriptor)); |
| 251 | data[8] = s->vendorid & 0xff; |
| 252 | data[9] = ((s->vendorid) >> 8) & 0xff; |
| 253 | data[10] = s->productid & 0xff; |
| 254 | data[11] = ((s->productid) >> 8) & 0xff; |
| 255 | ret = sizeof(qemu_serial_dev_descriptor); |
| 256 | break; |
| 257 | case USB_DT_CONFIG: |
| 258 | memcpy(data, qemu_serial_config_descriptor, |
| 259 | sizeof(qemu_serial_config_descriptor)); |
| 260 | ret = sizeof(qemu_serial_config_descriptor); |
| 261 | break; |
| 262 | case USB_DT_STRING: |
| 263 | switch(value & 0xff) { |
| 264 | case 0: |
| 265 | /* language ids */ |
| 266 | data[0] = 4; |
| 267 | data[1] = 3; |
| 268 | data[2] = 0x09; |
| 269 | data[3] = 0x04; |
| 270 | ret = 4; |
| 271 | break; |
| 272 | case 1: |
| 273 | /* vendor description */ |
| 274 | ret = set_usb_string(data, "QEMU " QEMU_VERSION); |
| 275 | break; |
| 276 | case 2: |
| 277 | /* product description */ |
| 278 | ret = set_usb_string(data, "QEMU USB SERIAL"); |
| 279 | break; |
| 280 | case 3: |
| 281 | /* serial number */ |
| 282 | ret = set_usb_string(data, "1"); |
| 283 | break; |
| 284 | default: |
| 285 | goto fail; |
| 286 | } |
| 287 | break; |
| 288 | default: |
| 289 | goto fail; |
| 290 | } |
| 291 | break; |
| 292 | case DeviceRequest | USB_REQ_GET_CONFIGURATION: |
| 293 | data[0] = 1; |
| 294 | ret = 1; |
| 295 | break; |
| 296 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: |
| 297 | ret = 0; |
| 298 | break; |
| 299 | case DeviceRequest | USB_REQ_GET_INTERFACE: |
| 300 | data[0] = 0; |
| 301 | ret = 1; |
| 302 | break; |
| 303 | case InterfaceOutRequest | USB_REQ_SET_INTERFACE: |
| 304 | ret = 0; |
| 305 | break; |
| 306 | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: |
| 307 | ret = 0; |
| 308 | break; |
| 309 | |
| 310 | /* Class specific requests. */ |
| 311 | case DeviceOutVendor | FTDI_RESET: |
| 312 | switch (value) { |
| 313 | case FTDI_RESET_SIO: |
| 314 | usb_serial_reset(s); |
| 315 | break; |
| 316 | case FTDI_RESET_RX: |
| 317 | s->recv_ptr = 0; |
| 318 | s->recv_used = 0; |
| 319 | /* TODO: purge from char device */ |
| 320 | break; |
| 321 | case FTDI_RESET_TX: |
| 322 | /* TODO: purge from char device */ |
| 323 | break; |
| 324 | } |
| 325 | break; |
| 326 | case DeviceOutVendor | FTDI_SET_MDM_CTRL: |
aurel32 | abb8a13 | 2008-08-13 04:23:17 +0000 | [diff] [blame] | 327 | { |
| 328 | static int flags; |
| 329 | qemu_chr_ioctl(s->cs,CHR_IOCTL_SERIAL_GET_TIOCM, &flags); |
| 330 | if (value & FTDI_SET_RTS) { |
| 331 | if (value & FTDI_RTS) |
| 332 | flags |= CHR_TIOCM_RTS; |
| 333 | else |
| 334 | flags &= ~CHR_TIOCM_RTS; |
| 335 | } |
| 336 | if (value & FTDI_SET_DTR) { |
| 337 | if (value & FTDI_DTR) |
| 338 | flags |= CHR_TIOCM_DTR; |
| 339 | else |
| 340 | flags &= ~CHR_TIOCM_DTR; |
| 341 | } |
| 342 | qemu_chr_ioctl(s->cs,CHR_IOCTL_SERIAL_SET_TIOCM, &flags); |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 343 | break; |
aurel32 | abb8a13 | 2008-08-13 04:23:17 +0000 | [diff] [blame] | 344 | } |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 345 | case DeviceOutVendor | FTDI_SET_FLOW_CTRL: |
| 346 | /* TODO: ioctl */ |
| 347 | break; |
| 348 | case DeviceOutVendor | FTDI_SET_BAUD: { |
| 349 | static const int subdivisors8[8] = { 0, 4, 2, 1, 3, 5, 6, 7 }; |
| 350 | int subdivisor8 = subdivisors8[((value & 0xc000) >> 14) |
| 351 | | ((index & 1) << 2)]; |
| 352 | int divisor = value & 0x3fff; |
| 353 | |
| 354 | /* chip special cases */ |
| 355 | if (divisor == 1 && subdivisor8 == 0) |
| 356 | subdivisor8 = 4; |
| 357 | if (divisor == 0 && subdivisor8 == 0) |
| 358 | divisor = 1; |
| 359 | |
| 360 | s->params.speed = (48000000 / 2) / (8 * divisor + subdivisor8); |
| 361 | qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params); |
| 362 | break; |
| 363 | } |
| 364 | case DeviceOutVendor | FTDI_SET_DATA: |
| 365 | switch (value & FTDI_PARITY) { |
| 366 | case 0: |
| 367 | s->params.parity = 'N'; |
| 368 | break; |
| 369 | case FTDI_ODD: |
| 370 | s->params.parity = 'O'; |
| 371 | break; |
| 372 | case FTDI_EVEN: |
| 373 | s->params.parity = 'E'; |
| 374 | break; |
| 375 | default: |
| 376 | DPRINTF("unsupported parity %d\n", value & FTDI_PARITY); |
| 377 | goto fail; |
| 378 | } |
| 379 | switch (value & FTDI_STOP) { |
| 380 | case FTDI_STOP1: |
| 381 | s->params.stop_bits = 1; |
| 382 | break; |
| 383 | case FTDI_STOP2: |
| 384 | s->params.stop_bits = 2; |
| 385 | break; |
| 386 | default: |
| 387 | DPRINTF("unsupported stop bits %d\n", value & FTDI_STOP); |
| 388 | goto fail; |
| 389 | } |
| 390 | qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params); |
| 391 | /* TODO: TX ON/OFF */ |
| 392 | break; |
| 393 | case DeviceInVendor | FTDI_GET_MDM_ST: |
aurel32 | abb8a13 | 2008-08-13 04:23:17 +0000 | [diff] [blame] | 394 | data[0] = usb_get_modem_lines(s) | 1; |
| 395 | data[1] = 0; |
| 396 | ret = 2; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 397 | break; |
| 398 | case DeviceOutVendor | FTDI_SET_EVENT_CHR: |
| 399 | /* TODO: handle it */ |
| 400 | s->event_chr = value; |
| 401 | break; |
| 402 | case DeviceOutVendor | FTDI_SET_ERROR_CHR: |
| 403 | /* TODO: handle it */ |
| 404 | s->error_chr = value; |
| 405 | break; |
| 406 | case DeviceOutVendor | FTDI_SET_LATENCY: |
| 407 | s->latency = value; |
| 408 | break; |
| 409 | case DeviceInVendor | FTDI_GET_LATENCY: |
| 410 | data[0] = s->latency; |
| 411 | ret = 1; |
| 412 | break; |
| 413 | default: |
| 414 | fail: |
| 415 | DPRINTF("got unsupported/bogus control %x, value %x\n", request, value); |
| 416 | ret = USB_RET_STALL; |
| 417 | break; |
| 418 | } |
| 419 | return ret; |
| 420 | } |
| 421 | |
| 422 | static int usb_serial_handle_data(USBDevice *dev, USBPacket *p) |
| 423 | { |
| 424 | USBSerialState *s = (USBSerialState *)dev; |
| 425 | int ret = 0; |
| 426 | uint8_t devep = p->devep; |
| 427 | uint8_t *data = p->data; |
| 428 | int len = p->len; |
| 429 | int first_len; |
| 430 | |
| 431 | switch (p->pid) { |
| 432 | case USB_TOKEN_OUT: |
| 433 | if (devep != 2) |
| 434 | goto fail; |
| 435 | qemu_chr_write(s->cs, data, len); |
| 436 | break; |
| 437 | |
| 438 | case USB_TOKEN_IN: |
| 439 | if (devep != 1) |
| 440 | goto fail; |
| 441 | first_len = RECV_BUF - s->recv_ptr; |
| 442 | if (len <= 2) { |
| 443 | ret = USB_RET_NAK; |
| 444 | break; |
| 445 | } |
aurel32 | abb8a13 | 2008-08-13 04:23:17 +0000 | [diff] [blame] | 446 | *data++ = usb_get_modem_lines(s) | 1; |
| 447 | /* We do not have the uart details */ |
Jason Wessel | 7e57f04 | 2009-05-18 10:00:26 -0500 | [diff] [blame] | 448 | /* handle serial break */ |
| 449 | if (s->event_trigger && s->event_trigger & FTDI_BI) { |
| 450 | s->event_trigger &= ~FTDI_BI; |
| 451 | *data++ = FTDI_BI; |
| 452 | ret = 2; |
| 453 | break; |
| 454 | } else { |
| 455 | *data++ = 0; |
| 456 | } |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 457 | len -= 2; |
| 458 | if (len > s->recv_used) |
| 459 | len = s->recv_used; |
| 460 | if (!len) { |
| 461 | ret = USB_RET_NAK; |
| 462 | break; |
| 463 | } |
| 464 | if (first_len > len) |
| 465 | first_len = len; |
| 466 | memcpy(data, s->recv_buf + s->recv_ptr, first_len); |
| 467 | if (len > first_len) |
| 468 | memcpy(data + first_len, s->recv_buf, len - first_len); |
| 469 | s->recv_used -= len; |
| 470 | s->recv_ptr = (s->recv_ptr + len) % RECV_BUF; |
| 471 | ret = len + 2; |
| 472 | break; |
| 473 | |
| 474 | default: |
| 475 | DPRINTF("Bad token\n"); |
| 476 | fail: |
| 477 | ret = USB_RET_STALL; |
| 478 | break; |
| 479 | } |
| 480 | |
| 481 | return ret; |
| 482 | } |
| 483 | |
| 484 | static void usb_serial_handle_destroy(USBDevice *dev) |
| 485 | { |
| 486 | USBSerialState *s = (USBSerialState *)dev; |
| 487 | |
| 488 | qemu_chr_close(s->cs); |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 489 | } |
| 490 | |
blueswir1 | 8fcd369 | 2008-08-17 20:26:25 +0000 | [diff] [blame] | 491 | static int usb_serial_can_read(void *opaque) |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 492 | { |
| 493 | USBSerialState *s = opaque; |
| 494 | return RECV_BUF - s->recv_used; |
| 495 | } |
| 496 | |
blueswir1 | 8fcd369 | 2008-08-17 20:26:25 +0000 | [diff] [blame] | 497 | static void usb_serial_read(void *opaque, const uint8_t *buf, int size) |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 498 | { |
| 499 | USBSerialState *s = opaque; |
| 500 | int first_size = RECV_BUF - s->recv_ptr; |
| 501 | if (first_size > size) |
| 502 | first_size = size; |
| 503 | memcpy(s->recv_buf + s->recv_ptr + s->recv_used, buf, first_size); |
| 504 | if (size > first_size) |
| 505 | memcpy(s->recv_buf, buf + first_size, size - first_size); |
| 506 | s->recv_used += size; |
| 507 | } |
| 508 | |
blueswir1 | 8fcd369 | 2008-08-17 20:26:25 +0000 | [diff] [blame] | 509 | static void usb_serial_event(void *opaque, int event) |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 510 | { |
| 511 | USBSerialState *s = opaque; |
| 512 | |
| 513 | switch (event) { |
| 514 | case CHR_EVENT_BREAK: |
Jason Wessel | 7e57f04 | 2009-05-18 10:00:26 -0500 | [diff] [blame] | 515 | s->event_trigger |= FTDI_BI; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 516 | break; |
| 517 | case CHR_EVENT_FOCUS: |
| 518 | break; |
| 519 | case CHR_EVENT_RESET: |
| 520 | usb_serial_reset(s); |
| 521 | /* TODO: Reset USB port */ |
| 522 | break; |
| 523 | } |
| 524 | } |
| 525 | |
Gerd Hoffmann | 806b602 | 2009-08-31 14:23:59 +0200 | [diff] [blame] | 526 | static int usb_serial_initfn(USBDevice *dev) |
| 527 | { |
| 528 | USBSerialState *s = DO_UPCAST(USBSerialState, dev, dev); |
| 529 | s->dev.speed = USB_SPEED_FULL; |
| 530 | return 0; |
| 531 | } |
| 532 | |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 533 | USBDevice *usb_serial_init(const char *filename) |
| 534 | { |
Gerd Hoffmann | 806b602 | 2009-08-31 14:23:59 +0200 | [diff] [blame] | 535 | USBDevice *dev; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 536 | USBSerialState *s; |
| 537 | CharDriverState *cdrv; |
balrog | a11d070 | 2008-01-19 13:00:43 +0000 | [diff] [blame] | 538 | unsigned short vendorid = 0x0403, productid = 0x6001; |
aliguori | 5ccfae1 | 2008-10-31 17:31:29 +0000 | [diff] [blame] | 539 | char label[32]; |
| 540 | static int index; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 541 | |
| 542 | while (*filename && *filename != ':') { |
| 543 | const char *p; |
| 544 | char *e; |
| 545 | if (strstart(filename, "vendorid=", &p)) { |
| 546 | vendorid = strtol(p, &e, 16); |
| 547 | if (e == p || (*e && *e != ',' && *e != ':')) { |
| 548 | printf("bogus vendor ID %s\n", p); |
| 549 | return NULL; |
| 550 | } |
| 551 | filename = e; |
| 552 | } else if (strstart(filename, "productid=", &p)) { |
| 553 | productid = strtol(p, &e, 16); |
| 554 | if (e == p || (*e && *e != ',' && *e != ':')) { |
| 555 | printf("bogus product ID %s\n", p); |
| 556 | return NULL; |
| 557 | } |
| 558 | filename = e; |
| 559 | } else { |
| 560 | printf("unrecognized serial USB option %s\n", filename); |
| 561 | return NULL; |
| 562 | } |
| 563 | while(*filename == ',') |
| 564 | filename++; |
| 565 | } |
| 566 | if (!*filename) { |
| 567 | printf("character device specification needed\n"); |
| 568 | return NULL; |
| 569 | } |
| 570 | filename++; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 571 | |
aliguori | 5ccfae1 | 2008-10-31 17:31:29 +0000 | [diff] [blame] | 572 | snprintf(label, sizeof(label), "usbserial%d", index++); |
aurel32 | ceecf1d | 2009-01-18 14:08:04 +0000 | [diff] [blame] | 573 | cdrv = qemu_chr_open(label, filename, NULL); |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 574 | if (!cdrv) |
Gerd Hoffmann | 806b602 | 2009-08-31 14:23:59 +0200 | [diff] [blame] | 575 | return NULL; |
| 576 | |
| 577 | dev = usb_create_simple(NULL /* FIXME */, "QEMU USB Serial"); |
| 578 | s = DO_UPCAST(USBSerialState, dev, dev); |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 579 | s->cs = cdrv; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 580 | s->vendorid = vendorid; |
| 581 | s->productid = productid; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 582 | snprintf(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Serial(%.16s)", |
| 583 | filename); |
| 584 | |
Gerd Hoffmann | 806b602 | 2009-08-31 14:23:59 +0200 | [diff] [blame] | 585 | qemu_chr_add_handlers(cdrv, usb_serial_can_read, usb_serial_read, |
| 586 | usb_serial_event, s); |
| 587 | |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 588 | usb_serial_handle_reset((USBDevice *)s); |
| 589 | return (USBDevice *)s; |
balrog | a795421 | 2008-01-14 03:41:02 +0000 | [diff] [blame] | 590 | } |
Gerd Hoffmann | 806b602 | 2009-08-31 14:23:59 +0200 | [diff] [blame] | 591 | |
| 592 | static struct USBDeviceInfo serial_info = { |
| 593 | .qdev.name = "QEMU USB Serial", |
| 594 | .qdev.size = sizeof(USBSerialState), |
| 595 | .init = usb_serial_initfn, |
| 596 | .handle_packet = usb_generic_handle_packet, |
| 597 | .handle_reset = usb_serial_handle_reset, |
| 598 | .handle_control = usb_serial_handle_control, |
| 599 | .handle_data = usb_serial_handle_data, |
| 600 | .handle_destroy = usb_serial_handle_destroy, |
| 601 | }; |
| 602 | |
| 603 | static void usb_serial_register_devices(void) |
| 604 | { |
| 605 | usb_qdev_register(&serial_info); |
| 606 | } |
| 607 | device_init(usb_serial_register_devices) |