1 /* $NetBSD: uftdi.c,v 1.13 2002/09/23 05:51:23 simonb Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 /* 43 * NOTE: all function names beginning like "uftdi_cfg_" can only 44 * be called from within the config thread function ! 45 */ 46 47 /* 48 * FTDI FT8U100AX serial adapter driver 49 */ 50 51 #include <sys/stdint.h> 52 #include <sys/stddef.h> 53 #include <sys/param.h> 54 #include <sys/queue.h> 55 #include <sys/types.h> 56 #include <sys/systm.h> 57 #include <sys/kernel.h> 58 #include <sys/bus.h> 59 #include <sys/linker_set.h> 60 #include <sys/module.h> 61 #include <sys/lock.h> 62 #include <sys/mutex.h> 63 #include <sys/condvar.h> 64 #include <sys/sysctl.h> 65 #include <sys/sx.h> 66 #include <sys/unistd.h> 67 #include <sys/callout.h> 68 #include <sys/malloc.h> 69 #include <sys/priv.h> 70 71 #include <dev/usb/usb.h> 72 #include <dev/usb/usbdi.h> 73 #include <dev/usb/usbdi_util.h> 74 #include "usbdevs.h" 75 76 #define USB_DEBUG_VAR uftdi_debug 77 #include <dev/usb/usb_debug.h> 78 #include <dev/usb/usb_process.h> 79 80 #include <dev/usb/serial/usb_serial.h> 81 #include <dev/usb/serial/uftdi_reg.h> 82 83 #if USB_DEBUG 84 static int uftdi_debug = 0; 85 86 SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi"); 87 SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW, 88 &uftdi_debug, 0, "Debug level"); 89 #endif 90 91 #define UFTDI_CONFIG_INDEX 0 92 #define UFTDI_IFACE_INDEX 0 93 94 #define UFTDI_IBUFSIZE 64 /* bytes, maximum number of bytes per 95 * frame */ 96 #define UFTDI_OBUFSIZE 64 /* bytes, cannot be increased due to 97 * do size encoding */ 98 99 enum { 100 UFTDI_BULK_DT_WR, 101 UFTDI_BULK_DT_RD, 102 UFTDI_N_TRANSFER, 103 }; 104 105 struct uftdi_softc { 106 struct ucom_super_softc sc_super_ucom; 107 struct ucom_softc sc_ucom; 108 109 struct usb_device *sc_udev; 110 struct usb_xfer *sc_xfer[UFTDI_N_TRANSFER]; 111 device_t sc_dev; 112 struct mtx sc_mtx; 113 114 uint32_t sc_unit; 115 enum uftdi_type sc_type; 116 117 uint16_t sc_last_lcr; 118 119 uint8_t sc_iface_index; 120 uint8_t sc_hdrlen; 121 uint8_t sc_msr; 122 uint8_t sc_lsr; 123 124 uint8_t sc_name[16]; 125 }; 126 127 struct uftdi_param_config { 128 uint16_t rate; 129 uint16_t lcr; 130 uint8_t v_start; 131 uint8_t v_stop; 132 uint8_t v_flow; 133 }; 134 135 /* prototypes */ 136 137 static device_probe_t uftdi_probe; 138 static device_attach_t uftdi_attach; 139 static device_detach_t uftdi_detach; 140 141 static usb_callback_t uftdi_write_callback; 142 static usb_callback_t uftdi_read_callback; 143 144 static void uftdi_cfg_open(struct ucom_softc *); 145 static void uftdi_cfg_set_dtr(struct ucom_softc *, uint8_t); 146 static void uftdi_cfg_set_rts(struct ucom_softc *, uint8_t); 147 static void uftdi_cfg_set_break(struct ucom_softc *, uint8_t); 148 static int uftdi_set_parm_soft(struct termios *, 149 struct uftdi_param_config *, uint8_t); 150 static int uftdi_pre_param(struct ucom_softc *, struct termios *); 151 static void uftdi_cfg_param(struct ucom_softc *, struct termios *); 152 static void uftdi_cfg_get_status(struct ucom_softc *, uint8_t *, 153 uint8_t *); 154 static void uftdi_start_read(struct ucom_softc *); 155 static void uftdi_stop_read(struct ucom_softc *); 156 static void uftdi_start_write(struct ucom_softc *); 157 static void uftdi_stop_write(struct ucom_softc *); 158 static uint8_t uftdi_8u232am_getrate(uint32_t, uint16_t *); 159 static void uftdi_poll(struct ucom_softc *ucom); 160 161 static const struct usb_config uftdi_config[UFTDI_N_TRANSFER] = { 162 163 [UFTDI_BULK_DT_WR] = { 164 .type = UE_BULK, 165 .endpoint = UE_ADDR_ANY, 166 .direction = UE_DIR_OUT, 167 .bufsize = UFTDI_OBUFSIZE, 168 .flags = {.pipe_bof = 1,}, 169 .callback = &uftdi_write_callback, 170 }, 171 172 [UFTDI_BULK_DT_RD] = { 173 .type = UE_BULK, 174 .endpoint = UE_ADDR_ANY, 175 .direction = UE_DIR_IN, 176 .bufsize = UFTDI_IBUFSIZE, 177 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 178 .callback = &uftdi_read_callback, 179 }, 180 }; 181 182 static const struct ucom_callback uftdi_callback = { 183 .ucom_cfg_get_status = &uftdi_cfg_get_status, 184 .ucom_cfg_set_dtr = &uftdi_cfg_set_dtr, 185 .ucom_cfg_set_rts = &uftdi_cfg_set_rts, 186 .ucom_cfg_set_break = &uftdi_cfg_set_break, 187 .ucom_cfg_param = &uftdi_cfg_param, 188 .ucom_cfg_open = &uftdi_cfg_open, 189 .ucom_pre_param = &uftdi_pre_param, 190 .ucom_start_read = &uftdi_start_read, 191 .ucom_stop_read = &uftdi_stop_read, 192 .ucom_start_write = &uftdi_start_write, 193 .ucom_stop_write = &uftdi_stop_write, 194 .ucom_poll = &uftdi_poll, 195 }; 196 197 static device_method_t uftdi_methods[] = { 198 /* Device interface */ 199 DEVMETHOD(device_probe, uftdi_probe), 200 DEVMETHOD(device_attach, uftdi_attach), 201 DEVMETHOD(device_detach, uftdi_detach), 202 203 {0, 0} 204 }; 205 206 static devclass_t uftdi_devclass; 207 208 static driver_t uftdi_driver = { 209 .name = "uftdi", 210 .methods = uftdi_methods, 211 .size = sizeof(struct uftdi_softc), 212 }; 213 214 DRIVER_MODULE(uftdi, uhub, uftdi_driver, uftdi_devclass, NULL, 0); 215 MODULE_DEPEND(uftdi, ucom, 1, 1, 1); 216 MODULE_DEPEND(uftdi, usb, 1, 1, 1); 217 218 static struct usb_device_id uftdi_devs[] = { 219 #define UFTDI_DEV(v,p,t) \ 220 { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, UFTDI_TYPE_##t) } 221 UFTDI_DEV(ATMEL, STK541, 8U232AM), 222 UFTDI_DEV(DRESDENELEKTRONIK, SENSORTERMINALBOARD, 8U232AM), 223 UFTDI_DEV(DRESDENELEKTRONIK, WIRELESSHANDHELDTERMINAL, 8U232AM), 224 UFTDI_DEV(FTDI, SERIAL_8U100AX, SIO), 225 UFTDI_DEV(FTDI, SERIAL_2232C, 8U232AM), 226 UFTDI_DEV(FTDI, SERIAL_2232D, 8U232AM), 227 UFTDI_DEV(FTDI, SERIAL_8U232AM, 8U232AM), 228 UFTDI_DEV(FTDI, SERIAL_8U232AM4, 8U232AM), 229 UFTDI_DEV(FTDI, SEMC_DSS20, 8U232AM), 230 UFTDI_DEV(FTDI, CFA_631, 8U232AM), 231 UFTDI_DEV(FTDI, CFA_632, 8U232AM), 232 UFTDI_DEV(FTDI, CFA_633, 8U232AM), 233 UFTDI_DEV(FTDI, CFA_634, 8U232AM), 234 UFTDI_DEV(FTDI, CFA_635, 8U232AM), 235 UFTDI_DEV(FTDI, USBSERIAL, 8U232AM), 236 UFTDI_DEV(FTDI, MX2_3, 8U232AM), 237 UFTDI_DEV(FTDI, MX4_5, 8U232AM), 238 UFTDI_DEV(FTDI, LK202, 8U232AM), 239 UFTDI_DEV(FTDI, LK204, 8U232AM), 240 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13M, 8U232AM), 241 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13S, 8U232AM), 242 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13U, 8U232AM), 243 UFTDI_DEV(FTDI, EISCOU, 8U232AM), 244 UFTDI_DEV(FTDI, UOPTBR, 8U232AM), 245 UFTDI_DEV(FTDI, EMCU2D, 8U232AM), 246 UFTDI_DEV(FTDI, PCMSFU, 8U232AM), 247 UFTDI_DEV(FTDI, EMCU2H, 8U232AM), 248 UFTDI_DEV(FTDI, MAXSTREAM, 8U232AM), 249 UFTDI_DEV(FTDI, CTI_USB_NANO_485, 8U232AM), 250 UFTDI_DEV(FTDI, CTI_USB_MINI_485, 8U232AM), 251 UFTDI_DEV(SIIG2, US2308, 8U232AM), 252 UFTDI_DEV(INTREPIDCS, VALUECAN, 8U232AM), 253 UFTDI_DEV(INTREPIDCS, NEOVI, 8U232AM), 254 UFTDI_DEV(BBELECTRONICS, USOTL4, 8U232AM), 255 UFTDI_DEV(MARVELL, SHEEVAPLUG, 8U232AM), 256 UFTDI_DEV(MELCO, PCOPRS1, 8U232AM), 257 UFTDI_DEV(RATOC, REXUSB60F, 8U232AM), 258 #undef UFTDI_DEV 259 }; 260 261 static int 262 uftdi_probe(device_t dev) 263 { 264 struct usb_attach_arg *uaa = device_get_ivars(dev); 265 266 if (uaa->usb_mode != USB_MODE_HOST) { 267 return (ENXIO); 268 } 269 if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) { 270 return (ENXIO); 271 } 272 /* attach to all present interfaces */ 273 274 return (usbd_lookup_id_by_uaa(uftdi_devs, sizeof(uftdi_devs), uaa)); 275 } 276 277 static int 278 uftdi_attach(device_t dev) 279 { 280 struct usb_attach_arg *uaa = device_get_ivars(dev); 281 struct uftdi_softc *sc = device_get_softc(dev); 282 int error; 283 284 sc->sc_udev = uaa->device; 285 sc->sc_dev = dev; 286 sc->sc_unit = device_get_unit(dev); 287 288 device_set_usb_desc(dev); 289 mtx_init(&sc->sc_mtx, "uftdi", NULL, MTX_DEF); 290 291 snprintf(sc->sc_name, sizeof(sc->sc_name), 292 "%s", device_get_nameunit(dev)); 293 294 DPRINTF("\n"); 295 296 sc->sc_iface_index = uaa->info.bIfaceIndex; 297 sc->sc_type = USB_GET_DRIVER_INFO(uaa); 298 299 switch (sc->sc_type) { 300 case UFTDI_TYPE_SIO: 301 sc->sc_hdrlen = 1; 302 break; 303 case UFTDI_TYPE_8U232AM: 304 default: 305 sc->sc_hdrlen = 0; 306 break; 307 } 308 309 error = usbd_transfer_setup(uaa->device, 310 &sc->sc_iface_index, sc->sc_xfer, uftdi_config, 311 UFTDI_N_TRANSFER, sc, &sc->sc_mtx); 312 313 if (error) { 314 device_printf(dev, "allocating USB " 315 "transfers failed\n"); 316 goto detach; 317 } 318 sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum; 319 320 /* clear stall at first run */ 321 mtx_lock(&sc->sc_mtx); 322 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]); 323 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]); 324 mtx_unlock(&sc->sc_mtx); 325 326 /* set a valid "lcr" value */ 327 328 sc->sc_last_lcr = 329 (FTDI_SIO_SET_DATA_STOP_BITS_2 | 330 FTDI_SIO_SET_DATA_PARITY_NONE | 331 FTDI_SIO_SET_DATA_BITS(8)); 332 333 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 334 &uftdi_callback, &sc->sc_mtx); 335 if (error) { 336 goto detach; 337 } 338 return (0); /* success */ 339 340 detach: 341 uftdi_detach(dev); 342 return (ENXIO); 343 } 344 345 static int 346 uftdi_detach(device_t dev) 347 { 348 struct uftdi_softc *sc = device_get_softc(dev); 349 350 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1); 351 usbd_transfer_unsetup(sc->sc_xfer, UFTDI_N_TRANSFER); 352 mtx_destroy(&sc->sc_mtx); 353 354 return (0); 355 } 356 357 static void 358 uftdi_cfg_open(struct ucom_softc *ucom) 359 { 360 struct uftdi_softc *sc = ucom->sc_parent; 361 uint16_t wIndex = ucom->sc_portno; 362 struct usb_device_request req; 363 364 DPRINTF(""); 365 366 /* perform a full reset on the device */ 367 368 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 369 req.bRequest = FTDI_SIO_RESET; 370 USETW(req.wValue, FTDI_SIO_RESET_SIO); 371 USETW(req.wIndex, wIndex); 372 USETW(req.wLength, 0); 373 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 374 &req, NULL, 0, 1000); 375 376 /* turn on RTS/CTS flow control */ 377 378 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 379 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 380 USETW(req.wValue, 0); 381 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, wIndex); 382 USETW(req.wLength, 0); 383 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 384 &req, NULL, 0, 1000); 385 386 /* 387 * NOTE: with the new UCOM layer there will always be a 388 * "uftdi_cfg_param()" call after "open()", so there is no need for 389 * "open()" to configure anything 390 */ 391 } 392 393 static void 394 uftdi_write_callback(struct usb_xfer *xfer, usb_error_t error) 395 { 396 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 397 struct usb_page_cache *pc; 398 uint32_t actlen; 399 uint8_t buf[1]; 400 401 switch (USB_GET_STATE(xfer)) { 402 case USB_ST_SETUP: 403 case USB_ST_TRANSFERRED: 404 tr_setup: 405 pc = usbd_xfer_get_frame(xfer, 0); 406 if (ucom_get_data(&sc->sc_ucom, pc, 407 sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen, 408 &actlen)) { 409 410 if (sc->sc_hdrlen > 0) { 411 buf[0] = 412 FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno); 413 usbd_copy_in(pc, 0, buf, 1); 414 } 415 usbd_xfer_set_frame_len(xfer, 0, actlen + sc->sc_hdrlen); 416 usbd_transfer_submit(xfer); 417 } 418 return; 419 420 default: /* Error */ 421 if (error != USB_ERR_CANCELLED) { 422 /* try to clear stall first */ 423 usbd_xfer_set_stall(xfer); 424 goto tr_setup; 425 } 426 return; 427 } 428 } 429 430 static void 431 uftdi_read_callback(struct usb_xfer *xfer, usb_error_t error) 432 { 433 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 434 struct usb_page_cache *pc; 435 uint8_t buf[2]; 436 uint8_t ftdi_msr; 437 uint8_t msr; 438 uint8_t lsr; 439 int actlen; 440 441 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 442 443 switch (USB_GET_STATE(xfer)) { 444 case USB_ST_TRANSFERRED: 445 446 if (actlen < 2) { 447 goto tr_setup; 448 } 449 pc = usbd_xfer_get_frame(xfer, 0); 450 usbd_copy_out(pc, 0, buf, 2); 451 452 ftdi_msr = FTDI_GET_MSR(buf); 453 lsr = FTDI_GET_LSR(buf); 454 455 msr = 0; 456 if (ftdi_msr & FTDI_SIO_CTS_MASK) 457 msr |= SER_CTS; 458 if (ftdi_msr & FTDI_SIO_DSR_MASK) 459 msr |= SER_DSR; 460 if (ftdi_msr & FTDI_SIO_RI_MASK) 461 msr |= SER_RI; 462 if (ftdi_msr & FTDI_SIO_RLSD_MASK) 463 msr |= SER_DCD; 464 465 if ((sc->sc_msr != msr) || 466 ((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) { 467 DPRINTF("status change msr=0x%02x (0x%02x) " 468 "lsr=0x%02x (0x%02x)\n", msr, sc->sc_msr, 469 lsr, sc->sc_lsr); 470 471 sc->sc_msr = msr; 472 sc->sc_lsr = lsr; 473 474 ucom_status_change(&sc->sc_ucom); 475 } 476 actlen -= 2; 477 478 if (actlen > 0) { 479 ucom_put_data(&sc->sc_ucom, pc, 2, actlen); 480 } 481 case USB_ST_SETUP: 482 tr_setup: 483 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 484 usbd_transfer_submit(xfer); 485 return; 486 487 default: /* Error */ 488 if (error != USB_ERR_CANCELLED) { 489 /* try to clear stall first */ 490 usbd_xfer_set_stall(xfer); 491 goto tr_setup; 492 } 493 return; 494 } 495 } 496 497 static void 498 uftdi_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 499 { 500 struct uftdi_softc *sc = ucom->sc_parent; 501 uint16_t wIndex = ucom->sc_portno; 502 uint16_t wValue; 503 struct usb_device_request req; 504 505 wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 506 507 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 508 req.bRequest = FTDI_SIO_MODEM_CTRL; 509 USETW(req.wValue, wValue); 510 USETW(req.wIndex, wIndex); 511 USETW(req.wLength, 0); 512 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 513 &req, NULL, 0, 1000); 514 } 515 516 static void 517 uftdi_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 518 { 519 struct uftdi_softc *sc = ucom->sc_parent; 520 uint16_t wIndex = ucom->sc_portno; 521 uint16_t wValue; 522 struct usb_device_request req; 523 524 wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 525 526 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 527 req.bRequest = FTDI_SIO_MODEM_CTRL; 528 USETW(req.wValue, wValue); 529 USETW(req.wIndex, wIndex); 530 USETW(req.wLength, 0); 531 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 532 &req, NULL, 0, 1000); 533 } 534 535 static void 536 uftdi_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 537 { 538 struct uftdi_softc *sc = ucom->sc_parent; 539 uint16_t wIndex = ucom->sc_portno; 540 uint16_t wValue; 541 struct usb_device_request req; 542 543 if (onoff) { 544 sc->sc_last_lcr |= FTDI_SIO_SET_BREAK; 545 } else { 546 sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK; 547 } 548 549 wValue = sc->sc_last_lcr; 550 551 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 552 req.bRequest = FTDI_SIO_SET_DATA; 553 USETW(req.wValue, wValue); 554 USETW(req.wIndex, wIndex); 555 USETW(req.wLength, 0); 556 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 557 &req, NULL, 0, 1000); 558 } 559 560 static int 561 uftdi_set_parm_soft(struct termios *t, 562 struct uftdi_param_config *cfg, uint8_t type) 563 { 564 bzero(cfg, sizeof(*cfg)); 565 566 switch (type) { 567 case UFTDI_TYPE_SIO: 568 switch (t->c_ospeed) { 569 case 300: 570 cfg->rate = ftdi_sio_b300; 571 break; 572 case 600: 573 cfg->rate = ftdi_sio_b600; 574 break; 575 case 1200: 576 cfg->rate = ftdi_sio_b1200; 577 break; 578 case 2400: 579 cfg->rate = ftdi_sio_b2400; 580 break; 581 case 4800: 582 cfg->rate = ftdi_sio_b4800; 583 break; 584 case 9600: 585 cfg->rate = ftdi_sio_b9600; 586 break; 587 case 19200: 588 cfg->rate = ftdi_sio_b19200; 589 break; 590 case 38400: 591 cfg->rate = ftdi_sio_b38400; 592 break; 593 case 57600: 594 cfg->rate = ftdi_sio_b57600; 595 break; 596 case 115200: 597 cfg->rate = ftdi_sio_b115200; 598 break; 599 default: 600 return (EINVAL); 601 } 602 break; 603 604 case UFTDI_TYPE_8U232AM: 605 if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) { 606 return (EINVAL); 607 } 608 break; 609 } 610 611 if (t->c_cflag & CSTOPB) 612 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2; 613 else 614 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1; 615 616 if (t->c_cflag & PARENB) { 617 if (t->c_cflag & PARODD) { 618 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD; 619 } else { 620 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN; 621 } 622 } else { 623 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE; 624 } 625 626 switch (t->c_cflag & CSIZE) { 627 case CS5: 628 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5); 629 break; 630 631 case CS6: 632 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6); 633 break; 634 635 case CS7: 636 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7); 637 break; 638 639 case CS8: 640 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8); 641 break; 642 } 643 644 if (t->c_cflag & CRTSCTS) { 645 cfg->v_flow = FTDI_SIO_RTS_CTS_HS; 646 } else if (t->c_iflag & (IXON | IXOFF)) { 647 cfg->v_flow = FTDI_SIO_XON_XOFF_HS; 648 cfg->v_start = t->c_cc[VSTART]; 649 cfg->v_stop = t->c_cc[VSTOP]; 650 } else { 651 cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL; 652 } 653 654 return (0); 655 } 656 657 static int 658 uftdi_pre_param(struct ucom_softc *ucom, struct termios *t) 659 { 660 struct uftdi_softc *sc = ucom->sc_parent; 661 struct uftdi_param_config cfg; 662 663 DPRINTF("\n"); 664 665 return (uftdi_set_parm_soft(t, &cfg, sc->sc_type)); 666 } 667 668 static void 669 uftdi_cfg_param(struct ucom_softc *ucom, struct termios *t) 670 { 671 struct uftdi_softc *sc = ucom->sc_parent; 672 uint16_t wIndex = ucom->sc_portno; 673 struct uftdi_param_config cfg; 674 struct usb_device_request req; 675 676 if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) { 677 /* should not happen */ 678 return; 679 } 680 sc->sc_last_lcr = cfg.lcr; 681 682 DPRINTF("\n"); 683 684 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 685 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 686 USETW(req.wValue, cfg.rate); 687 USETW(req.wIndex, wIndex); 688 USETW(req.wLength, 0); 689 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 690 &req, NULL, 0, 1000); 691 692 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 693 req.bRequest = FTDI_SIO_SET_DATA; 694 USETW(req.wValue, cfg.lcr); 695 USETW(req.wIndex, wIndex); 696 USETW(req.wLength, 0); 697 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 698 &req, NULL, 0, 1000); 699 700 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 701 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 702 USETW2(req.wValue, cfg.v_stop, cfg.v_start); 703 USETW2(req.wIndex, cfg.v_flow, wIndex); 704 USETW(req.wLength, 0); 705 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 706 &req, NULL, 0, 1000); 707 } 708 709 static void 710 uftdi_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 711 { 712 struct uftdi_softc *sc = ucom->sc_parent; 713 714 DPRINTF("msr=0x%02x lsr=0x%02x\n", 715 sc->sc_msr, sc->sc_lsr); 716 717 *msr = sc->sc_msr; 718 *lsr = sc->sc_lsr; 719 } 720 721 static void 722 uftdi_start_read(struct ucom_softc *ucom) 723 { 724 struct uftdi_softc *sc = ucom->sc_parent; 725 726 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_RD]); 727 } 728 729 static void 730 uftdi_stop_read(struct ucom_softc *ucom) 731 { 732 struct uftdi_softc *sc = ucom->sc_parent; 733 734 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_RD]); 735 } 736 737 static void 738 uftdi_start_write(struct ucom_softc *ucom) 739 { 740 struct uftdi_softc *sc = ucom->sc_parent; 741 742 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_WR]); 743 } 744 745 static void 746 uftdi_stop_write(struct ucom_softc *ucom) 747 { 748 struct uftdi_softc *sc = ucom->sc_parent; 749 750 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_WR]); 751 } 752 753 /*------------------------------------------------------------------------* 754 * uftdi_8u232am_getrate 755 * 756 * Return values: 757 * 0: Success 758 * Else: Failure 759 *------------------------------------------------------------------------*/ 760 static uint8_t 761 uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate) 762 { 763 /* Table of the nearest even powers-of-2 for values 0..15. */ 764 static const uint8_t roundoff[16] = { 765 0, 2, 2, 4, 4, 4, 8, 8, 766 8, 8, 8, 8, 16, 16, 16, 16, 767 }; 768 uint32_t d; 769 uint32_t freq; 770 uint16_t result; 771 772 if ((speed < 178) || (speed > ((3000000 * 100) / 97))) 773 return (1); /* prevent numerical overflow */ 774 775 /* Special cases for 2M and 3M. */ 776 if ((speed >= ((3000000 * 100) / 103)) && 777 (speed <= ((3000000 * 100) / 97))) { 778 result = 0; 779 goto done; 780 } 781 if ((speed >= ((2000000 * 100) / 103)) && 782 (speed <= ((2000000 * 100) / 97))) { 783 result = 1; 784 goto done; 785 } 786 d = (FTDI_8U232AM_FREQ << 4) / speed; 787 d = (d & ~15) + roundoff[d & 15]; 788 789 if (d < FTDI_8U232AM_MIN_DIV) 790 d = FTDI_8U232AM_MIN_DIV; 791 else if (d > FTDI_8U232AM_MAX_DIV) 792 d = FTDI_8U232AM_MAX_DIV; 793 794 /* 795 * Calculate the frequency needed for "d" to exactly divide down to 796 * our target "speed", and check that the actual frequency is within 797 * 3% of this. 798 */ 799 freq = (speed * d); 800 if ((freq < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) || 801 (freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 97))) 802 return (1); 803 804 /* 805 * Pack the divisor into the resultant value. The lower 14-bits 806 * hold the integral part, while the upper 2 bits encode the 807 * fractional component: either 0, 0.5, 0.25, or 0.125. 808 */ 809 result = (d >> 4); 810 if (d & 8) 811 result |= 0x4000; 812 else if (d & 4) 813 result |= 0x8000; 814 else if (d & 2) 815 result |= 0xc000; 816 817 done: 818 *rate = result; 819 return (0); 820 } 821 822 static void 823 uftdi_poll(struct ucom_softc *ucom) 824 { 825 struct uftdi_softc *sc = ucom->sc_parent; 826 usbd_transfer_poll(sc->sc_xfer, UFTDI_N_TRANSFER); 827 } 828