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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * NOTE: all function names beginning like "uftdi_cfg_" can only 34 * be called from within the config thread function ! 35 */ 36 37 /* 38 * FTDI FT8U100AX serial adapter driver 39 */ 40 41 #include <sys/stdint.h> 42 #include <sys/param.h> 43 #include <sys/queue.h> 44 #include <sys/types.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/bus.h> 48 #include <sys/module.h> 49 #include <sys/lock.h> 50 #include <sys/condvar.h> 51 #include <sys/sysctl.h> 52 #include <sys/unistd.h> 53 #include <sys/callout.h> 54 #include <sys/malloc.h> 55 #include <sys/priv.h> 56 57 #include <bus/u4b/usb.h> 58 #include <bus/u4b/usbdi.h> 59 #include <bus/u4b/usbdi_util.h> 60 #include <bus/u4b/usbdevs.h> 61 62 #define USB_DEBUG_VAR uftdi_debug 63 #include <bus/u4b/usb_debug.h> 64 #include <bus/u4b/usb_process.h> 65 66 #include <bus/u4b/serial/usb_serial.h> 67 #include <bus/u4b/serial/uftdi_reg.h> 68 69 #ifdef USB_DEBUG 70 static int uftdi_debug = 0; 71 72 static SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi"); 73 SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW, 74 &uftdi_debug, 0, "Debug level"); 75 #endif 76 77 #define UFTDI_CONFIG_INDEX 0 78 #define UFTDI_IFACE_INDEX 0 79 80 #define UFTDI_OBUFSIZE 64 /* bytes, cannot be increased due to 81 * do size encoding */ 82 83 enum { 84 UFTDI_BULK_DT_WR, 85 UFTDI_BULK_DT_RD, 86 UFTDI_N_TRANSFER, 87 }; 88 89 struct uftdi_softc { 90 struct ucom_super_softc sc_super_ucom; 91 struct ucom_softc sc_ucom; 92 93 struct usb_device *sc_udev; 94 struct usb_xfer *sc_xfer[UFTDI_N_TRANSFER]; 95 device_t sc_dev; 96 struct lock sc_lock; 97 98 uint32_t sc_unit; 99 enum uftdi_type sc_type; 100 101 uint16_t sc_last_lcr; 102 103 uint8_t sc_iface_index; 104 uint8_t sc_hdrlen; 105 uint8_t sc_msr; 106 uint8_t sc_lsr; 107 108 uint8_t sc_name[16]; 109 }; 110 111 struct uftdi_param_config { 112 uint16_t rate; 113 uint16_t lcr; 114 uint8_t v_start; 115 uint8_t v_stop; 116 uint8_t v_flow; 117 }; 118 119 /* prototypes */ 120 121 static device_probe_t uftdi_probe; 122 static device_attach_t uftdi_attach; 123 static device_detach_t uftdi_detach; 124 125 static usb_callback_t uftdi_write_callback; 126 static usb_callback_t uftdi_read_callback; 127 128 static void uftdi_cfg_open(struct ucom_softc *); 129 static void uftdi_cfg_set_dtr(struct ucom_softc *, uint8_t); 130 static void uftdi_cfg_set_rts(struct ucom_softc *, uint8_t); 131 static void uftdi_cfg_set_break(struct ucom_softc *, uint8_t); 132 static int uftdi_set_parm_soft(struct termios *, 133 struct uftdi_param_config *, uint8_t); 134 static int uftdi_pre_param(struct ucom_softc *, struct termios *); 135 static void uftdi_cfg_param(struct ucom_softc *, struct termios *); 136 static void uftdi_cfg_get_status(struct ucom_softc *, uint8_t *, 137 uint8_t *); 138 static void uftdi_start_read(struct ucom_softc *); 139 static void uftdi_stop_read(struct ucom_softc *); 140 static void uftdi_start_write(struct ucom_softc *); 141 static void uftdi_stop_write(struct ucom_softc *); 142 static uint8_t uftdi_8u232am_getrate(uint32_t, uint16_t *); 143 static void uftdi_poll(struct ucom_softc *ucom); 144 145 static const struct usb_config uftdi_config[UFTDI_N_TRANSFER] = { 146 147 [UFTDI_BULK_DT_WR] = { 148 .type = UE_BULK, 149 .endpoint = UE_ADDR_ANY, 150 .direction = UE_DIR_OUT, 151 .bufsize = UFTDI_OBUFSIZE, 152 .flags = {.pipe_bof = 1,}, 153 .callback = &uftdi_write_callback, 154 }, 155 156 [UFTDI_BULK_DT_RD] = { 157 .type = UE_BULK, 158 .endpoint = UE_ADDR_ANY, 159 .direction = UE_DIR_IN, 160 .bufsize = 0, /* use wMaxPacketSize */ 161 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 162 .callback = &uftdi_read_callback, 163 }, 164 }; 165 166 static const struct ucom_callback uftdi_callback = { 167 .ucom_cfg_get_status = &uftdi_cfg_get_status, 168 .ucom_cfg_set_dtr = &uftdi_cfg_set_dtr, 169 .ucom_cfg_set_rts = &uftdi_cfg_set_rts, 170 .ucom_cfg_set_break = &uftdi_cfg_set_break, 171 .ucom_cfg_param = &uftdi_cfg_param, 172 .ucom_cfg_open = &uftdi_cfg_open, 173 .ucom_pre_param = &uftdi_pre_param, 174 .ucom_start_read = &uftdi_start_read, 175 .ucom_stop_read = &uftdi_stop_read, 176 .ucom_start_write = &uftdi_start_write, 177 .ucom_stop_write = &uftdi_stop_write, 178 .ucom_poll = &uftdi_poll, 179 }; 180 181 static device_method_t uftdi_methods[] = { 182 /* Device interface */ 183 DEVMETHOD(device_probe, uftdi_probe), 184 DEVMETHOD(device_attach, uftdi_attach), 185 DEVMETHOD(device_detach, uftdi_detach), 186 187 DEVMETHOD_END 188 }; 189 190 static devclass_t uftdi_devclass; 191 192 static driver_t uftdi_driver = { 193 .name = "uftdi", 194 .methods = uftdi_methods, 195 .size = sizeof(struct uftdi_softc), 196 }; 197 198 DRIVER_MODULE(uftdi, uhub, uftdi_driver, uftdi_devclass, NULL, 0); 199 MODULE_DEPEND(uftdi, ucom, 1, 1, 1); 200 MODULE_DEPEND(uftdi, usb, 1, 1, 1); 201 MODULE_VERSION(uftdi, 1); 202 203 static STRUCT_USB_HOST_ID uftdi_devs[] = { 204 #define UFTDI_DEV(v,p,t) \ 205 { USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, UFTDI_TYPE_##t) } 206 UFTDI_DEV(ATMEL, STK541, 8U232AM), 207 UFTDI_DEV(DRESDENELEKTRONIK, SENSORTERMINALBOARD, 8U232AM), 208 UFTDI_DEV(DRESDENELEKTRONIK, WIRELESSHANDHELDTERMINAL, 8U232AM), 209 UFTDI_DEV(FALCOM, TWIST, 8U232AM), 210 UFTDI_DEV(FTDI, GAMMASCOUT, 8U232AM), 211 UFTDI_DEV(FTDI, SERIAL_8U100AX, SIO), 212 UFTDI_DEV(FTDI, SERIAL_2232C, 8U232AM), 213 UFTDI_DEV(FTDI, SERIAL_2232D, 8U232AM), 214 UFTDI_DEV(FTDI, BEAGLEBONE, 8U232AM), 215 UFTDI_DEV(FTDI, SERIAL_4232H, 8U232AM), 216 UFTDI_DEV(FTDI, SERIAL_8U232AM, 8U232AM), 217 UFTDI_DEV(FTDI, SERIAL_8U232AM4, 8U232AM), 218 UFTDI_DEV(FTDI, SEMC_DSS20, 8U232AM), 219 UFTDI_DEV(FTDI, CFA_631, 8U232AM), 220 UFTDI_DEV(FTDI, CFA_632, 8U232AM), 221 UFTDI_DEV(FTDI, CFA_633, 8U232AM), 222 UFTDI_DEV(FTDI, CFA_634, 8U232AM), 223 UFTDI_DEV(FTDI, CFA_635, 8U232AM), 224 UFTDI_DEV(FTDI, USB_UIRT, 8U232AM), 225 UFTDI_DEV(FTDI, USBSERIAL, 8U232AM), 226 UFTDI_DEV(FTDI, KBS, 8U232AM), 227 UFTDI_DEV(FTDI, MX2_3, 8U232AM), 228 UFTDI_DEV(FTDI, MX4_5, 8U232AM), 229 UFTDI_DEV(FTDI, LK202, 8U232AM), 230 UFTDI_DEV(FTDI, LK204, 8U232AM), 231 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13M, 8U232AM), 232 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13S, 8U232AM), 233 UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13U, 8U232AM), 234 UFTDI_DEV(FTDI, EISCOU, 8U232AM), 235 UFTDI_DEV(FTDI, UOPTBR, 8U232AM), 236 UFTDI_DEV(FTDI, EMCU2D, 8U232AM), 237 UFTDI_DEV(FTDI, PCMSFU, 8U232AM), 238 UFTDI_DEV(FTDI, EMCU2H, 8U232AM), 239 UFTDI_DEV(FTDI, MAXSTREAM, 8U232AM), 240 UFTDI_DEV(FTDI, CTI_USB_NANO_485, 8U232AM), 241 UFTDI_DEV(FTDI, CTI_USB_MINI_485, 8U232AM), 242 UFTDI_DEV(SIIG2, US2308, 8U232AM), 243 UFTDI_DEV(INTREPIDCS, VALUECAN, 8U232AM), 244 UFTDI_DEV(INTREPIDCS, NEOVI, 8U232AM), 245 UFTDI_DEV(BBELECTRONICS, USOTL4, 8U232AM), 246 UFTDI_DEV(MATRIXORBITAL, MOUA, 8U232AM), 247 UFTDI_DEV(MARVELL, SHEEVAPLUG, 8U232AM), 248 UFTDI_DEV(MELCO, PCOPRS1, 8U232AM), 249 UFTDI_DEV(RATOC, REXUSB60F, 8U232AM), 250 #undef UFTDI_DEV 251 }; 252 253 static int 254 uftdi_probe(device_t dev) 255 { 256 struct usb_attach_arg *uaa = device_get_ivars(dev); 257 258 if (uaa->usb_mode != USB_MODE_HOST) { 259 return (ENXIO); 260 } 261 if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) { 262 return (ENXIO); 263 } 264 /* attach to all present interfaces */ 265 266 return (usbd_lookup_id_by_uaa(uftdi_devs, sizeof(uftdi_devs), uaa)); 267 } 268 269 static int 270 uftdi_attach(device_t dev) 271 { 272 struct usb_attach_arg *uaa = device_get_ivars(dev); 273 struct uftdi_softc *sc = device_get_softc(dev); 274 int error; 275 276 sc->sc_udev = uaa->device; 277 sc->sc_dev = dev; 278 sc->sc_unit = device_get_unit(dev); 279 280 device_set_usb_desc(dev); 281 lockinit(&sc->sc_lock, "uftdi", 0, LK_CANRECURSE); 282 283 ksnprintf(sc->sc_name, sizeof(sc->sc_name), 284 "%s", device_get_nameunit(dev)); 285 286 DPRINTF("\n"); 287 288 sc->sc_iface_index = uaa->info.bIfaceIndex; 289 sc->sc_type = USB_GET_DRIVER_INFO(uaa); 290 291 switch (sc->sc_type) { 292 case UFTDI_TYPE_SIO: 293 sc->sc_hdrlen = 1; 294 break; 295 case UFTDI_TYPE_8U232AM: 296 default: 297 sc->sc_hdrlen = 0; 298 break; 299 } 300 301 error = usbd_transfer_setup(uaa->device, 302 &sc->sc_iface_index, sc->sc_xfer, uftdi_config, 303 UFTDI_N_TRANSFER, sc, &sc->sc_lock); 304 305 if (error) { 306 device_printf(dev, "allocating USB " 307 "transfers failed\n"); 308 goto detach; 309 } 310 sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum; 311 312 /* clear stall at first run */ 313 lockmgr(&sc->sc_lock, LK_EXCLUSIVE); 314 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]); 315 usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]); 316 lockmgr(&sc->sc_lock, LK_RELEASE); 317 318 /* set a valid "lcr" value */ 319 320 sc->sc_last_lcr = 321 (FTDI_SIO_SET_DATA_STOP_BITS_2 | 322 FTDI_SIO_SET_DATA_PARITY_NONE | 323 FTDI_SIO_SET_DATA_BITS(8)); 324 325 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 326 &uftdi_callback, &sc->sc_lock); 327 if (error) { 328 goto detach; 329 } 330 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 331 332 return (0); /* success */ 333 334 detach: 335 uftdi_detach(dev); 336 return (ENXIO); 337 } 338 339 static int 340 uftdi_detach(device_t dev) 341 { 342 struct uftdi_softc *sc = device_get_softc(dev); 343 344 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 345 usbd_transfer_unsetup(sc->sc_xfer, UFTDI_N_TRANSFER); 346 lockuninit(&sc->sc_lock); 347 348 return (0); 349 } 350 351 static void 352 uftdi_cfg_open(struct ucom_softc *ucom) 353 { 354 struct uftdi_softc *sc = ucom->sc_parent; 355 uint16_t wIndex = ucom->sc_portno; 356 struct usb_device_request req; 357 358 DPRINTF(""); 359 360 /* perform a full reset on the device */ 361 362 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 363 req.bRequest = FTDI_SIO_RESET; 364 USETW(req.wValue, FTDI_SIO_RESET_SIO); 365 USETW(req.wIndex, wIndex); 366 USETW(req.wLength, 0); 367 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 368 &req, NULL, 0, 1000); 369 370 /* turn on RTS/CTS flow control */ 371 372 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 373 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 374 USETW(req.wValue, 0); 375 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, wIndex); 376 USETW(req.wLength, 0); 377 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 378 &req, NULL, 0, 1000); 379 380 /* 381 * NOTE: with the new UCOM layer there will always be a 382 * "uftdi_cfg_param()" call after "open()", so there is no need for 383 * "open()" to configure anything 384 */ 385 } 386 387 static void 388 uftdi_write_callback(struct usb_xfer *xfer, usb_error_t error) 389 { 390 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 391 struct usb_page_cache *pc; 392 uint32_t actlen; 393 uint8_t buf[1]; 394 395 switch (USB_GET_STATE(xfer)) { 396 case USB_ST_SETUP: 397 case USB_ST_TRANSFERRED: 398 tr_setup: 399 pc = usbd_xfer_get_frame(xfer, 0); 400 if (ucom_get_data(&sc->sc_ucom, pc, 401 sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen, 402 &actlen)) { 403 404 if (sc->sc_hdrlen > 0) { 405 buf[0] = 406 FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno); 407 usbd_copy_in(pc, 0, buf, 1); 408 } 409 usbd_xfer_set_frame_len(xfer, 0, actlen + sc->sc_hdrlen); 410 usbd_transfer_submit(xfer); 411 } 412 return; 413 414 default: /* Error */ 415 if (error != USB_ERR_CANCELLED) { 416 /* try to clear stall first */ 417 usbd_xfer_set_stall(xfer); 418 goto tr_setup; 419 } 420 return; 421 } 422 } 423 424 static void 425 uftdi_read_callback(struct usb_xfer *xfer, usb_error_t error) 426 { 427 struct uftdi_softc *sc = usbd_xfer_softc(xfer); 428 struct usb_page_cache *pc; 429 uint8_t buf[2]; 430 uint8_t ftdi_msr; 431 uint8_t msr; 432 uint8_t lsr; 433 int actlen; 434 435 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 436 437 switch (USB_GET_STATE(xfer)) { 438 case USB_ST_TRANSFERRED: 439 440 if (actlen < 2) { 441 goto tr_setup; 442 } 443 pc = usbd_xfer_get_frame(xfer, 0); 444 usbd_copy_out(pc, 0, buf, 2); 445 446 ftdi_msr = FTDI_GET_MSR(buf); 447 lsr = FTDI_GET_LSR(buf); 448 449 msr = 0; 450 if (ftdi_msr & FTDI_SIO_CTS_MASK) 451 msr |= SER_CTS; 452 if (ftdi_msr & FTDI_SIO_DSR_MASK) 453 msr |= SER_DSR; 454 if (ftdi_msr & FTDI_SIO_RI_MASK) 455 msr |= SER_RI; 456 if (ftdi_msr & FTDI_SIO_RLSD_MASK) 457 msr |= SER_DCD; 458 459 if ((sc->sc_msr != msr) || 460 ((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) { 461 DPRINTF("status change msr=0x%02x (0x%02x) " 462 "lsr=0x%02x (0x%02x)\n", msr, sc->sc_msr, 463 lsr, sc->sc_lsr); 464 465 sc->sc_msr = msr; 466 sc->sc_lsr = lsr; 467 468 ucom_status_change(&sc->sc_ucom); 469 } 470 actlen -= 2; 471 472 if (actlen > 0) { 473 ucom_put_data(&sc->sc_ucom, pc, 2, actlen); 474 } 475 case USB_ST_SETUP: 476 tr_setup: 477 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 478 usbd_transfer_submit(xfer); 479 return; 480 481 default: /* Error */ 482 if (error != USB_ERR_CANCELLED) { 483 /* try to clear stall first */ 484 usbd_xfer_set_stall(xfer); 485 goto tr_setup; 486 } 487 return; 488 } 489 } 490 491 static void 492 uftdi_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 493 { 494 struct uftdi_softc *sc = ucom->sc_parent; 495 uint16_t wIndex = ucom->sc_portno; 496 uint16_t wValue; 497 struct usb_device_request req; 498 499 wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 500 501 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 502 req.bRequest = FTDI_SIO_MODEM_CTRL; 503 USETW(req.wValue, wValue); 504 USETW(req.wIndex, wIndex); 505 USETW(req.wLength, 0); 506 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 507 &req, NULL, 0, 1000); 508 } 509 510 static void 511 uftdi_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 512 { 513 struct uftdi_softc *sc = ucom->sc_parent; 514 uint16_t wIndex = ucom->sc_portno; 515 uint16_t wValue; 516 struct usb_device_request req; 517 518 wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 519 520 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 521 req.bRequest = FTDI_SIO_MODEM_CTRL; 522 USETW(req.wValue, wValue); 523 USETW(req.wIndex, wIndex); 524 USETW(req.wLength, 0); 525 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 526 &req, NULL, 0, 1000); 527 } 528 529 static void 530 uftdi_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 531 { 532 struct uftdi_softc *sc = ucom->sc_parent; 533 uint16_t wIndex = ucom->sc_portno; 534 uint16_t wValue; 535 struct usb_device_request req; 536 537 if (onoff) { 538 sc->sc_last_lcr |= FTDI_SIO_SET_BREAK; 539 } else { 540 sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK; 541 } 542 543 wValue = sc->sc_last_lcr; 544 545 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 546 req.bRequest = FTDI_SIO_SET_DATA; 547 USETW(req.wValue, wValue); 548 USETW(req.wIndex, wIndex); 549 USETW(req.wLength, 0); 550 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 551 &req, NULL, 0, 1000); 552 } 553 554 static int 555 uftdi_set_parm_soft(struct termios *t, 556 struct uftdi_param_config *cfg, uint8_t type) 557 { 558 memset(cfg, 0, sizeof(*cfg)); 559 560 switch (type) { 561 case UFTDI_TYPE_SIO: 562 switch (t->c_ospeed) { 563 case 300: 564 cfg->rate = ftdi_sio_b300; 565 break; 566 case 600: 567 cfg->rate = ftdi_sio_b600; 568 break; 569 case 1200: 570 cfg->rate = ftdi_sio_b1200; 571 break; 572 case 2400: 573 cfg->rate = ftdi_sio_b2400; 574 break; 575 case 4800: 576 cfg->rate = ftdi_sio_b4800; 577 break; 578 case 9600: 579 cfg->rate = ftdi_sio_b9600; 580 break; 581 case 19200: 582 cfg->rate = ftdi_sio_b19200; 583 break; 584 case 38400: 585 cfg->rate = ftdi_sio_b38400; 586 break; 587 case 57600: 588 cfg->rate = ftdi_sio_b57600; 589 break; 590 case 115200: 591 cfg->rate = ftdi_sio_b115200; 592 break; 593 default: 594 return (EINVAL); 595 } 596 break; 597 598 case UFTDI_TYPE_8U232AM: 599 if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) { 600 return (EINVAL); 601 } 602 break; 603 } 604 605 if (t->c_cflag & CSTOPB) 606 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2; 607 else 608 cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1; 609 610 if (t->c_cflag & PARENB) { 611 if (t->c_cflag & PARODD) { 612 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD; 613 } else { 614 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN; 615 } 616 } else { 617 cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE; 618 } 619 620 switch (t->c_cflag & CSIZE) { 621 case CS5: 622 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5); 623 break; 624 625 case CS6: 626 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6); 627 break; 628 629 case CS7: 630 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7); 631 break; 632 633 case CS8: 634 cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8); 635 break; 636 } 637 638 if (t->c_cflag & CRTSCTS) { 639 cfg->v_flow = FTDI_SIO_RTS_CTS_HS; 640 } else if (t->c_iflag & (IXON | IXOFF)) { 641 cfg->v_flow = FTDI_SIO_XON_XOFF_HS; 642 cfg->v_start = t->c_cc[VSTART]; 643 cfg->v_stop = t->c_cc[VSTOP]; 644 } else { 645 cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL; 646 } 647 648 return (0); 649 } 650 651 static int 652 uftdi_pre_param(struct ucom_softc *ucom, struct termios *t) 653 { 654 struct uftdi_softc *sc = ucom->sc_parent; 655 struct uftdi_param_config cfg; 656 657 DPRINTF("\n"); 658 659 return (uftdi_set_parm_soft(t, &cfg, sc->sc_type)); 660 } 661 662 static void 663 uftdi_cfg_param(struct ucom_softc *ucom, struct termios *t) 664 { 665 struct uftdi_softc *sc = ucom->sc_parent; 666 uint16_t wIndex = ucom->sc_portno; 667 struct uftdi_param_config cfg; 668 struct usb_device_request req; 669 670 if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) { 671 /* should not happen */ 672 return; 673 } 674 sc->sc_last_lcr = cfg.lcr; 675 676 DPRINTF("\n"); 677 678 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 679 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 680 USETW(req.wValue, cfg.rate); 681 USETW(req.wIndex, wIndex); 682 USETW(req.wLength, 0); 683 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 684 &req, NULL, 0, 1000); 685 686 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 687 req.bRequest = FTDI_SIO_SET_DATA; 688 USETW(req.wValue, cfg.lcr); 689 USETW(req.wIndex, wIndex); 690 USETW(req.wLength, 0); 691 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 692 &req, NULL, 0, 1000); 693 694 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 695 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 696 USETW2(req.wValue, cfg.v_stop, cfg.v_start); 697 USETW2(req.wIndex, cfg.v_flow, wIndex); 698 USETW(req.wLength, 0); 699 ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 700 &req, NULL, 0, 1000); 701 } 702 703 static void 704 uftdi_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 705 { 706 struct uftdi_softc *sc = ucom->sc_parent; 707 708 DPRINTF("msr=0x%02x lsr=0x%02x\n", 709 sc->sc_msr, sc->sc_lsr); 710 711 *msr = sc->sc_msr; 712 *lsr = sc->sc_lsr; 713 } 714 715 static void 716 uftdi_start_read(struct ucom_softc *ucom) 717 { 718 struct uftdi_softc *sc = ucom->sc_parent; 719 720 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_RD]); 721 } 722 723 static void 724 uftdi_stop_read(struct ucom_softc *ucom) 725 { 726 struct uftdi_softc *sc = ucom->sc_parent; 727 728 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_RD]); 729 } 730 731 static void 732 uftdi_start_write(struct ucom_softc *ucom) 733 { 734 struct uftdi_softc *sc = ucom->sc_parent; 735 736 usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_WR]); 737 } 738 739 static void 740 uftdi_stop_write(struct ucom_softc *ucom) 741 { 742 struct uftdi_softc *sc = ucom->sc_parent; 743 744 usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_WR]); 745 } 746 747 /*------------------------------------------------------------------------* 748 * uftdi_8u232am_getrate 749 * 750 * Return values: 751 * 0: Success 752 * Else: Failure 753 *------------------------------------------------------------------------*/ 754 static uint8_t 755 uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate) 756 { 757 /* Table of the nearest even powers-of-2 for values 0..15. */ 758 static const uint8_t roundoff[16] = { 759 0, 2, 2, 4, 4, 4, 8, 8, 760 8, 8, 8, 8, 16, 16, 16, 16, 761 }; 762 uint32_t d; 763 uint32_t freq; 764 uint16_t result; 765 766 if ((speed < 178) || (speed > ((3000000 * 100) / 97))) 767 return (1); /* prevent numerical overflow */ 768 769 /* Special cases for 2M and 3M. */ 770 if ((speed >= ((3000000 * 100) / 103)) && 771 (speed <= ((3000000 * 100) / 97))) { 772 result = 0; 773 goto done; 774 } 775 if ((speed >= ((2000000 * 100) / 103)) && 776 (speed <= ((2000000 * 100) / 97))) { 777 result = 1; 778 goto done; 779 } 780 d = (FTDI_8U232AM_FREQ << 4) / speed; 781 d = (d & ~15) + roundoff[d & 15]; 782 783 if (d < FTDI_8U232AM_MIN_DIV) 784 d = FTDI_8U232AM_MIN_DIV; 785 else if (d > FTDI_8U232AM_MAX_DIV) 786 d = FTDI_8U232AM_MAX_DIV; 787 788 /* 789 * Calculate the frequency needed for "d" to exactly divide down to 790 * our target "speed", and check that the actual frequency is within 791 * 3% of this. 792 */ 793 freq = (speed * d); 794 if ((freq < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) || 795 (freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 97))) 796 return (1); 797 798 /* 799 * Pack the divisor into the resultant value. The lower 14-bits 800 * hold the integral part, while the upper 2 bits encode the 801 * fractional component: either 0, 0.5, 0.25, or 0.125. 802 */ 803 result = (d >> 4); 804 if (d & 8) 805 result |= 0x4000; 806 else if (d & 4) 807 result |= 0x8000; 808 else if (d & 2) 809 result |= 0xc000; 810 811 done: 812 *rate = result; 813 return (0); 814 } 815 816 static void 817 uftdi_poll(struct ucom_softc *ucom) 818 { 819 struct uftdi_softc *sc = ucom->sc_parent; 820 usbd_transfer_poll(sc->sc_xfer, UFTDI_N_TRANSFER); 821 } 822