uftdi.c revision 1.19
1 /* $NetBSD: uftdi.c,v 1.19 2004/01/05 13:49:40 augustss 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 (at) 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 /* 40 * FTDI FT8U100AX serial adapter driver 41 */ 42 43 /* 44 * XXX This driver will not support multiple serial ports. 45 * XXX The ucom layer needs to be extended first. 46 */ 47 48 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: uftdi.c,v 1.19 2004/01/05 13:49:40 augustss Exp $"); 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/kernel.h> 54 #include <sys/device.h> 55 #include <sys/conf.h> 56 #include <sys/tty.h> 57 58 #include <dev/usb/usb.h> 59 #include <dev/usb/usbhid.h> 60 61 #include <dev/usb/usbdi.h> 62 #include <dev/usb/usbdi_util.h> 63 #include <dev/usb/usbdevs.h> 64 65 #include <dev/usb/ucomvar.h> 66 67 #include <dev/usb/uftdireg.h> 68 69 #ifdef UFTDI_DEBUG 70 #define DPRINTF(x) if (uftdidebug) printf x 71 #define DPRINTFN(n,x) if (uftdidebug>(n)) printf x 72 int uftdidebug = 0; 73 #else 74 #define DPRINTF(x) 75 #define DPRINTFN(n,x) 76 #endif 77 78 #define UFTDI_CONFIG_INDEX 0 79 #define UFTDI_IFACE_INDEX 0 80 81 82 /* 83 * These are the maximum number of bytes transferred per frame. 84 * The output buffer size cannot be increased due to the size encoding. 85 */ 86 #define UFTDIIBUFSIZE 64 87 #define UFTDIOBUFSIZE 64 88 89 struct uftdi_softc { 90 USBBASEDEVICE sc_dev; /* base device */ 91 usbd_device_handle sc_udev; /* device */ 92 usbd_interface_handle sc_iface; /* interface */ 93 94 enum uftdi_type sc_type; 95 u_int sc_hdrlen; 96 97 u_char sc_msr; 98 u_char sc_lsr; 99 100 device_ptr_t sc_subdev; 101 102 u_char sc_dying; 103 104 u_int last_lcr; 105 }; 106 107 Static void uftdi_get_status(void *, int portno, u_char *lsr, u_char *msr); 108 Static void uftdi_set(void *, int, int, int); 109 Static int uftdi_param(void *, int, struct termios *); 110 Static int uftdi_open(void *sc, int portno); 111 Static void uftdi_read(void *sc, int portno, u_char **ptr,u_int32_t *count); 112 Static void uftdi_write(void *sc, int portno, u_char *to, u_char *from, 113 u_int32_t *count); 114 Static void uftdi_break(void *sc, int portno, int onoff); 115 116 struct ucom_methods uftdi_methods = { 117 uftdi_get_status, 118 uftdi_set, 119 uftdi_param, 120 NULL, 121 uftdi_open, 122 NULL, 123 uftdi_read, 124 uftdi_write, 125 }; 126 127 USB_DECLARE_DRIVER(uftdi); 128 129 USB_MATCH(uftdi) 130 { 131 USB_MATCH_START(uftdi, uaa); 132 133 if (uaa->iface != NULL) 134 return (UMATCH_NONE); 135 136 DPRINTFN(20,("uftdi: vendor=0x%x, product=0x%x\n", 137 uaa->vendor, uaa->product)); 138 139 if (uaa->vendor == USB_VENDOR_FTDI && 140 (uaa->product == USB_PRODUCT_FTDI_SERIAL_8U100AX || 141 uaa->product == USB_PRODUCT_FTDI_SERIAL_8U232AM || 142 uaa->product == USB_PRODUCT_FTDI_SEMC_DSS20 || 143 uaa->product == USB_PRODUCT_FTDI_LCD_LK202_24_USB || 144 uaa->product == USB_PRODUCT_FTDI_LCD_MX200_USB)) 145 return (UMATCH_VENDOR_PRODUCT); 146 147 return (UMATCH_NONE); 148 } 149 150 USB_ATTACH(uftdi) 151 { 152 USB_ATTACH_START(uftdi, sc, uaa); 153 usbd_device_handle dev = uaa->device; 154 usbd_interface_handle iface; 155 usb_interface_descriptor_t *id; 156 usb_endpoint_descriptor_t *ed; 157 char devinfo[1024]; 158 char *devname = USBDEVNAME(sc->sc_dev); 159 int i; 160 usbd_status err; 161 struct ucom_attach_args uca; 162 163 DPRINTFN(10,("\nuftdi_attach: sc=%p\n", sc)); 164 165 /* Move the device into the configured state. */ 166 err = usbd_set_config_index(dev, UFTDI_CONFIG_INDEX, 1); 167 if (err) { 168 printf("\n%s: failed to set configuration, err=%s\n", 169 devname, usbd_errstr(err)); 170 goto bad; 171 } 172 173 err = usbd_device2interface_handle(dev, UFTDI_IFACE_INDEX, &iface); 174 if (err) { 175 printf("\n%s: failed to get interface, err=%s\n", 176 devname, usbd_errstr(err)); 177 goto bad; 178 } 179 180 usbd_devinfo(dev, 0, devinfo); 181 USB_ATTACH_SETUP; 182 printf("%s: %s\n", devname, devinfo); 183 184 id = usbd_get_interface_descriptor(iface); 185 186 sc->sc_udev = dev; 187 sc->sc_iface = iface; 188 189 switch (uaa->product) { 190 case USB_PRODUCT_FTDI_SERIAL_8U100AX: 191 sc->sc_type = UFTDI_TYPE_SIO; 192 sc->sc_hdrlen = 1; 193 break; 194 195 case USB_PRODUCT_FTDI_SEMC_DSS20: 196 case USB_PRODUCT_FTDI_SERIAL_8U232AM: 197 case USB_PRODUCT_FTDI_LCD_LK202_24_USB: 198 case USB_PRODUCT_FTDI_LCD_MX200_USB: 199 sc->sc_type = UFTDI_TYPE_8U232AM; 200 sc->sc_hdrlen = 0; 201 break; 202 203 default: /* Can't happen */ 204 goto bad; 205 } 206 207 uca.bulkin = uca.bulkout = -1; 208 for (i = 0; i < id->bNumEndpoints; i++) { 209 int addr, dir, attr; 210 ed = usbd_interface2endpoint_descriptor(iface, i); 211 if (ed == NULL) { 212 printf("%s: could not read endpoint descriptor" 213 ": %s\n", devname, usbd_errstr(err)); 214 goto bad; 215 } 216 217 addr = ed->bEndpointAddress; 218 dir = UE_GET_DIR(ed->bEndpointAddress); 219 attr = ed->bmAttributes & UE_XFERTYPE; 220 if (dir == UE_DIR_IN && attr == UE_BULK) 221 uca.bulkin = addr; 222 else if (dir == UE_DIR_OUT && attr == UE_BULK) 223 uca.bulkout = addr; 224 else { 225 printf("%s: unexpected endpoint\n", devname); 226 goto bad; 227 } 228 } 229 if (uca.bulkin == -1) { 230 printf("%s: Could not find data bulk in\n", 231 USBDEVNAME(sc->sc_dev)); 232 goto bad; 233 } 234 if (uca.bulkout == -1) { 235 printf("%s: Could not find data bulk out\n", 236 USBDEVNAME(sc->sc_dev)); 237 goto bad; 238 } 239 240 uca.portno = FTDI_PIT_SIOA; 241 /* bulkin, bulkout set above */ 242 uca.ibufsize = UFTDIIBUFSIZE; 243 uca.obufsize = UFTDIOBUFSIZE - sc->sc_hdrlen; 244 uca.ibufsizepad = UFTDIIBUFSIZE; 245 uca.opkthdrlen = sc->sc_hdrlen; 246 uca.device = dev; 247 uca.iface = iface; 248 uca.methods = &uftdi_methods; 249 uca.arg = sc; 250 uca.info = NULL; 251 252 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 253 USBDEV(sc->sc_dev)); 254 255 DPRINTF(("uftdi: in=0x%x out=0x%x\n", uca.bulkin, uca.bulkout)); 256 sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); 257 258 USB_ATTACH_SUCCESS_RETURN; 259 260 bad: 261 DPRINTF(("uftdi_attach: ATTACH ERROR\n")); 262 sc->sc_dying = 1; 263 USB_ATTACH_ERROR_RETURN; 264 } 265 266 int 267 uftdi_activate(device_ptr_t self, enum devact act) 268 { 269 struct uftdi_softc *sc = (struct uftdi_softc *)self; 270 int rv = 0; 271 272 switch (act) { 273 case DVACT_ACTIVATE: 274 return (EOPNOTSUPP); 275 276 case DVACT_DEACTIVATE: 277 if (sc->sc_subdev != NULL) 278 rv = config_deactivate(sc->sc_subdev); 279 sc->sc_dying = 1; 280 break; 281 } 282 return (rv); 283 } 284 285 int 286 uftdi_detach(device_ptr_t self, int flags) 287 { 288 struct uftdi_softc *sc = (struct uftdi_softc *)self; 289 290 DPRINTF(("uftdi_detach: sc=%p flags=%d\n", sc, flags)); 291 sc->sc_dying = 1; 292 if (sc->sc_subdev != NULL) { 293 config_detach(sc->sc_subdev, flags); 294 sc->sc_subdev = NULL; 295 } 296 297 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 298 USBDEV(sc->sc_dev)); 299 300 return (0); 301 } 302 303 Static int 304 uftdi_open(void *vsc, int portno) 305 { 306 struct uftdi_softc *sc = vsc; 307 usb_device_request_t req; 308 usbd_status err; 309 struct termios t; 310 311 DPRINTF(("uftdi_open: sc=%p\n", sc)); 312 313 if (sc->sc_dying) 314 return (EIO); 315 316 /* Perform a full reset on the device */ 317 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 318 req.bRequest = FTDI_SIO_RESET; 319 USETW(req.wValue, FTDI_SIO_RESET_SIO); 320 USETW(req.wIndex, portno); 321 USETW(req.wLength, 0); 322 err = usbd_do_request(sc->sc_udev, &req, NULL); 323 if (err) 324 return (EIO); 325 326 /* Set 9600 baud, 2 stop bits, no parity, 8 bits */ 327 t.c_ospeed = 9600; 328 t.c_cflag = CSTOPB | CS8; 329 (void)uftdi_param(sc, portno, &t); 330 331 /* Turn on RTS/CTS flow control */ 332 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 333 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 334 USETW(req.wValue, 0); 335 USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, portno); 336 USETW(req.wLength, 0); 337 err = usbd_do_request(sc->sc_udev, &req, NULL); 338 if (err) 339 return (EIO); 340 341 return (0); 342 } 343 344 Static void 345 uftdi_read(void *vsc, int portno, u_char **ptr, u_int32_t *count) 346 { 347 struct uftdi_softc *sc = vsc; 348 u_char msr, lsr; 349 350 DPRINTFN(15,("uftdi_read: sc=%p, port=%d count=%d\n", sc, portno, 351 *count)); 352 353 msr = FTDI_GET_MSR(*ptr); 354 lsr = FTDI_GET_LSR(*ptr); 355 356 #ifdef UFTDI_DEBUG 357 if (*count != 2) 358 DPRINTFN(10,("uftdi_read: sc=%p, port=%d count=%d data[0]=" 359 "0x%02x\n", sc, portno, *count, (*ptr)[2])); 360 #endif 361 362 if (sc->sc_msr != msr || 363 (sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK)) { 364 DPRINTF(("uftdi_read: status change msr=0x%02x(0x%02x) " 365 "lsr=0x%02x(0x%02x)\n", msr, sc->sc_msr, 366 lsr, sc->sc_lsr)); 367 sc->sc_msr = msr; 368 sc->sc_lsr = lsr; 369 ucom_status_change((struct ucom_softc *)sc->sc_subdev); 370 } 371 372 /* Pick up status and adjust data part. */ 373 *ptr += 2; 374 *count -= 2; 375 } 376 377 Static void 378 uftdi_write(void *vsc, int portno, u_char *to, u_char *from, u_int32_t *count) 379 { 380 struct uftdi_softc *sc = vsc; 381 382 DPRINTFN(10,("uftdi_write: sc=%p, port=%d count=%u data[0]=0x%02x\n", 383 vsc, portno, *count, from[0])); 384 385 /* Make length tag and copy data */ 386 if (sc->sc_hdrlen > 0) 387 *to = FTDI_OUT_TAG(*count, portno); 388 389 memcpy(to + sc->sc_hdrlen, from, *count); 390 *count += sc->sc_hdrlen; 391 } 392 393 Static void 394 uftdi_set(void *vsc, int portno, int reg, int onoff) 395 { 396 struct uftdi_softc *sc = vsc; 397 usb_device_request_t req; 398 int ctl; 399 400 DPRINTF(("uftdi_set: sc=%p, port=%d reg=%d onoff=%d\n", vsc, portno, 401 reg, onoff)); 402 403 switch (reg) { 404 case UCOM_SET_DTR: 405 ctl = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW; 406 break; 407 case UCOM_SET_RTS: 408 ctl = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW; 409 break; 410 case UCOM_SET_BREAK: 411 uftdi_break(sc, portno, onoff); 412 return; 413 default: 414 return; 415 } 416 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 417 req.bRequest = FTDI_SIO_MODEM_CTRL; 418 USETW(req.wValue, ctl); 419 USETW(req.wIndex, portno); 420 USETW(req.wLength, 0); 421 DPRINTFN(2,("uftdi_set: reqtype=0x%02x req=0x%02x value=0x%04x " 422 "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest, 423 UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength))); 424 (void)usbd_do_request(sc->sc_udev, &req, NULL); 425 } 426 427 Static int 428 uftdi_param(void *vsc, int portno, struct termios *t) 429 { 430 struct uftdi_softc *sc = vsc; 431 usb_device_request_t req; 432 usbd_status err; 433 int rate, data, flow; 434 435 DPRINTF(("uftdi_param: sc=%p\n", sc)); 436 437 if (sc->sc_dying) 438 return (EIO); 439 440 switch (sc->sc_type) { 441 case UFTDI_TYPE_SIO: 442 switch (t->c_ospeed) { 443 case 300: rate = ftdi_sio_b300; break; 444 case 600: rate = ftdi_sio_b600; break; 445 case 1200: rate = ftdi_sio_b1200; break; 446 case 2400: rate = ftdi_sio_b2400; break; 447 case 4800: rate = ftdi_sio_b4800; break; 448 case 9600: rate = ftdi_sio_b9600; break; 449 case 19200: rate = ftdi_sio_b19200; break; 450 case 38400: rate = ftdi_sio_b38400; break; 451 case 57600: rate = ftdi_sio_b57600; break; 452 case 115200: rate = ftdi_sio_b115200; break; 453 default: 454 return (EINVAL); 455 } 456 break; 457 458 case UFTDI_TYPE_8U232AM: 459 switch(t->c_ospeed) { 460 case 300: rate = ftdi_8u232am_b300; break; 461 case 600: rate = ftdi_8u232am_b600; break; 462 case 1200: rate = ftdi_8u232am_b1200; break; 463 case 2400: rate = ftdi_8u232am_b2400; break; 464 case 4800: rate = ftdi_8u232am_b4800; break; 465 case 9600: rate = ftdi_8u232am_b9600; break; 466 case 19200: rate = ftdi_8u232am_b19200; break; 467 case 38400: rate = ftdi_8u232am_b38400; break; 468 case 57600: rate = ftdi_8u232am_b57600; break; 469 case 115200: rate = ftdi_8u232am_b115200; break; 470 case 230400: rate = ftdi_8u232am_b230400; break; 471 case 460800: rate = ftdi_8u232am_b460800; break; 472 case 921600: rate = ftdi_8u232am_b921600; break; 473 default: 474 return (EINVAL); 475 } 476 break; 477 478 default: 479 return (EINVAL); 480 } 481 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 482 req.bRequest = FTDI_SIO_SET_BAUD_RATE; 483 USETW(req.wValue, rate); 484 USETW(req.wIndex, portno); 485 USETW(req.wLength, 0); 486 DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x " 487 "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest, 488 UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength))); 489 err = usbd_do_request(sc->sc_udev, &req, NULL); 490 if (err) 491 return (EIO); 492 493 if (ISSET(t->c_cflag, CSTOPB)) 494 data = FTDI_SIO_SET_DATA_STOP_BITS_2; 495 else 496 data = FTDI_SIO_SET_DATA_STOP_BITS_1; 497 if (ISSET(t->c_cflag, PARENB)) { 498 if (ISSET(t->c_cflag, PARODD)) 499 data |= FTDI_SIO_SET_DATA_PARITY_ODD; 500 else 501 data |= FTDI_SIO_SET_DATA_PARITY_EVEN; 502 } else 503 data |= FTDI_SIO_SET_DATA_PARITY_NONE; 504 switch (ISSET(t->c_cflag, CSIZE)) { 505 case CS5: 506 data |= FTDI_SIO_SET_DATA_BITS(5); 507 break; 508 case CS6: 509 data |= FTDI_SIO_SET_DATA_BITS(6); 510 break; 511 case CS7: 512 data |= FTDI_SIO_SET_DATA_BITS(7); 513 break; 514 case CS8: 515 data |= FTDI_SIO_SET_DATA_BITS(8); 516 break; 517 } 518 sc->last_lcr = data; 519 520 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 521 req.bRequest = FTDI_SIO_SET_DATA; 522 USETW(req.wValue, data); 523 USETW(req.wIndex, portno); 524 USETW(req.wLength, 0); 525 DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x " 526 "index=0x%04x len=%d\n", req.bmRequestType, req.bRequest, 527 UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength))); 528 err = usbd_do_request(sc->sc_udev, &req, NULL); 529 if (err) 530 return (EIO); 531 532 if (ISSET(t->c_cflag, CRTSCTS)) { 533 flow = FTDI_SIO_RTS_CTS_HS; 534 USETW(req.wValue, 0); 535 } else if (ISSET(t->c_iflag, IXON|IXOFF)) { 536 flow = FTDI_SIO_XON_XOFF_HS; 537 USETW2(req.wValue, t->c_cc[VSTOP], t->c_cc[VSTART]); 538 } else { 539 flow = FTDI_SIO_DISABLE_FLOW_CTRL; 540 USETW(req.wValue, 0); 541 } 542 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 543 req.bRequest = FTDI_SIO_SET_FLOW_CTRL; 544 USETW2(req.wIndex, flow, portno); 545 USETW(req.wLength, 0); 546 err = usbd_do_request(sc->sc_udev, &req, NULL); 547 if (err) 548 return (EIO); 549 550 return (0); 551 } 552 553 void 554 uftdi_get_status(void *vsc, int portno, u_char *lsr, u_char *msr) 555 { 556 struct uftdi_softc *sc = vsc; 557 558 DPRINTF(("uftdi_status: msr=0x%02x lsr=0x%02x\n", 559 sc->sc_msr, sc->sc_lsr)); 560 561 if (msr != NULL) 562 *msr = sc->sc_msr; 563 if (lsr != NULL) 564 *lsr = sc->sc_lsr; 565 } 566 567 void 568 uftdi_break(void *vsc, int portno, int onoff) 569 { 570 struct uftdi_softc *sc = vsc; 571 usb_device_request_t req; 572 int data; 573 574 DPRINTF(("uftdi_break: sc=%p, port=%d onoff=%d\n", vsc, portno, 575 onoff)); 576 577 if (onoff) { 578 data = sc->last_lcr | FTDI_SIO_SET_BREAK; 579 } else { 580 data = sc->last_lcr; 581 } 582 583 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 584 req.bRequest = FTDI_SIO_SET_DATA; 585 USETW(req.wValue, data); 586 USETW(req.wIndex, portno); 587 USETW(req.wLength, 0); 588 (void)usbd_do_request(sc->sc_udev, &req, NULL); 589 } 590
Indexes created Tue Sep 30 17:09:57 GMT 2025