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sys/dev/usb/serial/uslcom.c
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1 /* $OpenBSD: uslcom.c,v 1.17 2007/11/24 10:52:12 jsg Exp $ */ 2 3 #include <sys/cdefs.h> 4 __FBSDID("$FreeBSD$"); 5 6 /* 7 * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org> 8 * 9 * Permission to use, copy, modify, and distribute this software for any 10 * purpose with or without fee is hereby granted, provided that the above 11 * copyright notice and this permission notice appear in all copies. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 */ 21 22 /* 23 * Driver for Silicon Laboratories CP2101/CP2102/CP2103/CP2104/CP2105 24 * USB-Serial adapters. Based on datasheet AN571, publicly available from 25 * http://www.silabs.com/Support%20Documents/TechnicalDocs/AN571.pdf 26 */ 27 28 #include <sys/stdint.h> 29 #include <sys/stddef.h> 30 #include <sys/param.h> 31 #include <sys/queue.h> 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/module.h> 37 #include <sys/lock.h> 38 #include <sys/mutex.h> 39 #include <sys/condvar.h> 40 #include <sys/sysctl.h> 41 #include <sys/sx.h> 42 #include <sys/unistd.h> 43 #include <sys/callout.h> 44 #include <sys/malloc.h> 45 #include <sys/priv.h> 46 47 #include <dev/usb/usb.h> 48 #include <dev/usb/usbdi.h> 49 #include <dev/usb/usbdi_util.h> 50 #include <dev/usb/usb_ioctl.h> 51 #include "usbdevs.h" 52 53 #define USB_DEBUG_VAR uslcom_debug 54 #include <dev/usb/usb_debug.h> 55 #include <dev/usb/usb_process.h> 56 57 #include <dev/usb/serial/usb_serial.h> 58 59 #ifdef USB_DEBUG 60 static int uslcom_debug = 0; 61 62 static SYSCTL_NODE(_hw_usb, OID_AUTO, uslcom, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 63 "USB uslcom"); 64 SYSCTL_INT(_hw_usb_uslcom, OID_AUTO, debug, CTLFLAG_RWTUN, 65 &uslcom_debug, 0, "Debug level"); 66 #endif 67 68 #define USLCOM_BULK_BUF_SIZE 1024 69 #define USLCOM_CONFIG_INDEX 0 70 71 /* Request types */ 72 #define USLCOM_WRITE 0x41 73 #define USLCOM_READ 0xc1 74 75 /* Request codes */ 76 #define USLCOM_IFC_ENABLE 0x00 77 #define USLCOM_SET_BAUDDIV 0x01 78 #define USLCOM_SET_LINE_CTL 0x03 79 #define USLCOM_SET_BREAK 0x05 80 #define USLCOM_SET_MHS 0x07 81 #define USLCOM_GET_MDMSTS 0x08 82 #define USLCOM_SET_FLOW 0x13 83 #define USLCOM_SET_BAUDRATE 0x1e 84 #define USLCOM_VENDOR_SPECIFIC 0xff 85 86 /* USLCOM_IFC_ENABLE values */ 87 #define USLCOM_IFC_ENABLE_DIS 0x00 88 #define USLCOM_IFC_ENABLE_EN 0x01 89 90 /* USLCOM_SET_MHS/USLCOM_GET_MDMSTS values */ 91 #define USLCOM_MHS_DTR_ON 0x0001 92 #define USLCOM_MHS_DTR_SET 0x0100 93 #define USLCOM_MHS_RTS_ON 0x0002 94 #define USLCOM_MHS_RTS_SET 0x0200 95 #define USLCOM_MHS_CTS 0x0010 96 #define USLCOM_MHS_DSR 0x0020 97 #define USLCOM_MHS_RI 0x0040 98 #define USLCOM_MHS_DCD 0x0080 99 100 /* USLCOM_SET_BAUDDIV values */ 101 #define USLCOM_BAUDDIV_REF 3686400 /* 3.6864 MHz */ 102 103 /* USLCOM_SET_LINE_CTL values */ 104 #define USLCOM_STOP_BITS_1 0x00 105 #define USLCOM_STOP_BITS_2 0x02 106 #define USLCOM_PARITY_NONE 0x00 107 #define USLCOM_PARITY_ODD 0x10 108 #define USLCOM_PARITY_EVEN 0x20 109 #define USLCOM_SET_DATA_BITS(x) ((x) << 8) 110 111 /* USLCOM_SET_BREAK values */ 112 #define USLCOM_SET_BREAK_OFF 0x00 113 #define USLCOM_SET_BREAK_ON 0x01 114 115 /* USLCOM_SET_FLOW values - 1st word */ 116 #define USLCOM_FLOW_DTR_ON 0x00000001 /* DTR static active */ 117 #define USLCOM_FLOW_CTS_HS 0x00000008 /* CTS handshake */ 118 /* USLCOM_SET_FLOW values - 2nd word */ 119 #define USLCOM_FLOW_RTS_ON 0x00000040 /* RTS static active */ 120 #define USLCOM_FLOW_RTS_HS 0x00000080 /* RTS handshake */ 121 122 /* USLCOM_VENDOR_SPECIFIC values */ 123 #define USLCOM_GET_PARTNUM 0x370B 124 #define USLCOM_WRITE_LATCH 0x37E1 125 #define USLCOM_READ_LATCH 0x00C2 126 127 /* USLCOM_GET_PARTNUM values from hardware */ 128 #define USLCOM_PARTNUM_CP2101 1 129 #define USLCOM_PARTNUM_CP2102 2 130 #define USLCOM_PARTNUM_CP2103 3 131 #define USLCOM_PARTNUM_CP2104 4 132 #define USLCOM_PARTNUM_CP2105 5 133 134 enum { 135 USLCOM_BULK_DT_WR, 136 USLCOM_BULK_DT_RD, 137 USLCOM_CTRL_DT_RD, 138 USLCOM_N_TRANSFER, 139 }; 140 141 struct uslcom_softc { 142 struct ucom_super_softc sc_super_ucom; 143 struct ucom_softc sc_ucom; 144 struct usb_callout sc_watchdog; 145 146 struct usb_xfer *sc_xfer[USLCOM_N_TRANSFER]; 147 struct usb_device *sc_udev; 148 struct mtx sc_mtx; 149 150 uint8_t sc_msr; 151 uint8_t sc_lsr; 152 uint8_t sc_iface_no; 153 uint8_t sc_partnum; 154 }; 155 156 static device_probe_t uslcom_probe; 157 static device_attach_t uslcom_attach; 158 static device_detach_t uslcom_detach; 159 static void uslcom_free_softc(struct uslcom_softc *); 160 161 static usb_callback_t uslcom_write_callback; 162 static usb_callback_t uslcom_read_callback; 163 static usb_callback_t uslcom_control_callback; 164 165 static void uslcom_free(struct ucom_softc *); 166 static uint8_t uslcom_get_partnum(struct uslcom_softc *); 167 static void uslcom_cfg_open(struct ucom_softc *); 168 static void uslcom_cfg_close(struct ucom_softc *); 169 static void uslcom_cfg_set_dtr(struct ucom_softc *, uint8_t); 170 static void uslcom_cfg_set_rts(struct ucom_softc *, uint8_t); 171 static void uslcom_cfg_set_break(struct ucom_softc *, uint8_t); 172 static void uslcom_cfg_param(struct ucom_softc *, struct termios *); 173 static void uslcom_cfg_get_status(struct ucom_softc *, uint8_t *, uint8_t *); 174 static int uslcom_ioctl(struct ucom_softc *, uint32_t, caddr_t, int, 175 struct thread *); 176 static int uslcom_pre_param(struct ucom_softc *, struct termios *); 177 static void uslcom_start_read(struct ucom_softc *); 178 static void uslcom_stop_read(struct ucom_softc *); 179 static void uslcom_start_write(struct ucom_softc *); 180 static void uslcom_stop_write(struct ucom_softc *); 181 static void uslcom_poll(struct ucom_softc *ucom); 182 183 static const struct usb_config uslcom_config[USLCOM_N_TRANSFER] = { 184 [USLCOM_BULK_DT_WR] = { 185 .type = UE_BULK, 186 .endpoint = UE_ADDR_ANY, 187 .direction = UE_DIR_OUT, 188 .bufsize = USLCOM_BULK_BUF_SIZE, 189 .flags = {.pipe_bof = 1,}, 190 .callback = &uslcom_write_callback, 191 }, 192 193 [USLCOM_BULK_DT_RD] = { 194 .type = UE_BULK, 195 .endpoint = UE_ADDR_ANY, 196 .direction = UE_DIR_IN, 197 .bufsize = USLCOM_BULK_BUF_SIZE, 198 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 199 .callback = &uslcom_read_callback, 200 }, 201 [USLCOM_CTRL_DT_RD] = { 202 .type = UE_CONTROL, 203 .endpoint = 0x00, 204 .direction = UE_DIR_ANY, 205 .bufsize = sizeof(struct usb_device_request) + 8, 206 .flags = {.pipe_bof = 1,}, 207 .callback = &uslcom_control_callback, 208 .timeout = 1000, /* 1 second timeout */ 209 }, 210 }; 211 212 static struct ucom_callback uslcom_callback = { 213 .ucom_cfg_get_status = &uslcom_cfg_get_status, 214 .ucom_cfg_set_dtr = &uslcom_cfg_set_dtr, 215 .ucom_cfg_set_rts = &uslcom_cfg_set_rts, 216 .ucom_cfg_set_break = &uslcom_cfg_set_break, 217 .ucom_cfg_open = &uslcom_cfg_open, 218 .ucom_cfg_close = &uslcom_cfg_close, 219 .ucom_cfg_param = &uslcom_cfg_param, 220 .ucom_pre_param = &uslcom_pre_param, 221 .ucom_ioctl = &uslcom_ioctl, 222 .ucom_start_read = &uslcom_start_read, 223 .ucom_stop_read = &uslcom_stop_read, 224 .ucom_start_write = &uslcom_start_write, 225 .ucom_stop_write = &uslcom_stop_write, 226 .ucom_poll = &uslcom_poll, 227 .ucom_free = &uslcom_free, 228 }; 229 230 static const STRUCT_USB_HOST_ID uslcom_devs[] = { 231 #define USLCOM_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } 232 USLCOM_DEV(BALTECH, CARDREADER), 233 USLCOM_DEV(CLIPSAL, 5000CT2), 234 USLCOM_DEV(CLIPSAL, 5500PACA), 235 USLCOM_DEV(CLIPSAL, 5500PCU), 236 USLCOM_DEV(CLIPSAL, 560884), 237 USLCOM_DEV(CLIPSAL, 5800PC), 238 USLCOM_DEV(CLIPSAL, C5000CT2), 239 USLCOM_DEV(CLIPSAL, L51xx), 240 USLCOM_DEV(DATAAPEX, MULTICOM), 241 USLCOM_DEV(DELL, DW700), 242 USLCOM_DEV(DIGIANSWER, ZIGBEE802154), 243 USLCOM_DEV(DYNASTREAM, ANTDEVBOARD), 244 USLCOM_DEV(DYNASTREAM, ANTDEVBOARD2), 245 USLCOM_DEV(DYNASTREAM, ANT2USB), 246 USLCOM_DEV(ELV, USBI2C), 247 USLCOM_DEV(FESTO, CMSP), 248 USLCOM_DEV(FESTO, CPX_USB), 249 USLCOM_DEV(FOXCONN, PIRELLI_DP_L10), 250 USLCOM_DEV(FOXCONN, TCOM_TC_300), 251 USLCOM_DEV(GEMALTO, PROXPU), 252 USLCOM_DEV(JABLOTRON, PC60B), 253 USLCOM_DEV(KAMSTRUP, OPTICALEYE), 254 USLCOM_DEV(KAMSTRUP, MBUS_250D), 255 USLCOM_DEV(LAKESHORE, 121), 256 USLCOM_DEV(LAKESHORE, 218A), 257 USLCOM_DEV(LAKESHORE, 219), 258 USLCOM_DEV(LAKESHORE, 233), 259 USLCOM_DEV(LAKESHORE, 235), 260 USLCOM_DEV(LAKESHORE, 335), 261 USLCOM_DEV(LAKESHORE, 336), 262 USLCOM_DEV(LAKESHORE, 350), 263 USLCOM_DEV(LAKESHORE, 371), 264 USLCOM_DEV(LAKESHORE, 411), 265 USLCOM_DEV(LAKESHORE, 425), 266 USLCOM_DEV(LAKESHORE, 455A), 267 USLCOM_DEV(LAKESHORE, 465), 268 USLCOM_DEV(LAKESHORE, 475A), 269 USLCOM_DEV(LAKESHORE, 625A), 270 USLCOM_DEV(LAKESHORE, 642A), 271 USLCOM_DEV(LAKESHORE, 648), 272 USLCOM_DEV(LAKESHORE, 737), 273 USLCOM_DEV(LAKESHORE, 776), 274 USLCOM_DEV(LINKINSTRUMENTS, MSO19), 275 USLCOM_DEV(LINKINSTRUMENTS, MSO28), 276 USLCOM_DEV(LINKINSTRUMENTS, MSO28_2), 277 USLCOM_DEV(MEI, CASHFLOW_SC), 278 USLCOM_DEV(MEI, S2000), 279 USLCOM_DEV(NETGEAR, M4100), 280 USLCOM_DEV(OWEN, AC4), 281 USLCOM_DEV(OWL, CM_160), 282 USLCOM_DEV(PHILIPS, ACE1001), 283 USLCOM_DEV(PLX, CA42), 284 USLCOM_DEV(RENESAS, RX610), 285 USLCOM_DEV(SEL, C662), 286 USLCOM_DEV(SILABS, AC_SERV_CAN), 287 USLCOM_DEV(SILABS, AC_SERV_CIS), 288 USLCOM_DEV(SILABS, AC_SERV_IBUS), 289 USLCOM_DEV(SILABS, AC_SERV_OBD), 290 USLCOM_DEV(SILABS, AEROCOMM), 291 USLCOM_DEV(SILABS, AMBER_AMB2560), 292 USLCOM_DEV(SILABS, ARGUSISP), 293 USLCOM_DEV(SILABS, ARKHAM_DS101_A), 294 USLCOM_DEV(SILABS, ARKHAM_DS101_M), 295 USLCOM_DEV(SILABS, ARYGON_MIFARE), 296 USLCOM_DEV(SILABS, AVIT_USB_TTL), 297 USLCOM_DEV(SILABS, B_G_H3000), 298 USLCOM_DEV(SILABS, BALLUFF_RFID), 299 USLCOM_DEV(SILABS, BEI_VCP), 300 USLCOM_DEV(SILABS, BSM7DUSB), 301 USLCOM_DEV(SILABS, BURNSIDE), 302 USLCOM_DEV(SILABS, C2_EDGE_MODEM), 303 USLCOM_DEV(SILABS, CP2102), 304 USLCOM_DEV(SILABS, CP210X_2), 305 USLCOM_DEV(SILABS, CP210X_3), 306 USLCOM_DEV(SILABS, CP210X_4), 307 USLCOM_DEV(SILABS, CRUMB128), 308 USLCOM_DEV(SILABS, CYGNAL), 309 USLCOM_DEV(SILABS, CYGNAL_DEBUG), 310 USLCOM_DEV(SILABS, CYGNAL_GPS), 311 USLCOM_DEV(SILABS, DEGREE), 312 USLCOM_DEV(SILABS, DEKTEK_DTAPLUS), 313 USLCOM_DEV(SILABS, EMS_C1007), 314 USLCOM_DEV(SILABS, HAMLINKUSB), 315 USLCOM_DEV(SILABS, HELICOM), 316 USLCOM_DEV(SILABS, HUBZ), 317 USLCOM_DEV(SILABS, BV_AV2010_10), 318 USLCOM_DEV(SILABS, IMS_USB_RS422), 319 USLCOM_DEV(SILABS, INFINITY_MIC), 320 USLCOM_DEV(SILABS, INGENI_ZIGBEE), 321 USLCOM_DEV(SILABS, INSYS_MODEM), 322 USLCOM_DEV(SILABS, IRZ_SG10), 323 USLCOM_DEV(SILABS, KYOCERA_GPS), 324 USLCOM_DEV(SILABS, LIPOWSKY_HARP), 325 USLCOM_DEV(SILABS, LIPOWSKY_JTAG), 326 USLCOM_DEV(SILABS, LIPOWSKY_LIN), 327 USLCOM_DEV(SILABS, MC35PU), 328 USLCOM_DEV(SILABS, MMB_ZIGBEE), 329 USLCOM_DEV(SILABS, MJS_TOSLINK), 330 USLCOM_DEV(SILABS, MSD_DASHHAWK), 331 USLCOM_DEV(SILABS, MULTIPLEX_RC), 332 USLCOM_DEV(SILABS, OPTRIS_MSPRO), 333 USLCOM_DEV(SILABS, POLOLU), 334 USLCOM_DEV(SILABS, PROCYON_AVS), 335 USLCOM_DEV(SILABS, SB_PARAMOUNT_ME), 336 USLCOM_DEV(SILABS, SUUNTO), 337 USLCOM_DEV(SILABS, TAMSMASTER), 338 USLCOM_DEV(SILABS, TELEGESIS_ETRX2), 339 USLCOM_DEV(SILABS, TRACIENT), 340 USLCOM_DEV(SILABS, TRAQMATE), 341 USLCOM_DEV(SILABS, USBCOUNT50), 342 USLCOM_DEV(SILABS, USBPULSE100), 343 USLCOM_DEV(SILABS, USBSCOPE50), 344 USLCOM_DEV(SILABS, USBWAVE12), 345 USLCOM_DEV(SILABS, V_PREON32), 346 USLCOM_DEV(SILABS, VSTABI), 347 USLCOM_DEV(SILABS, WAVIT), 348 USLCOM_DEV(SILABS, WMRBATT), 349 USLCOM_DEV(SILABS, WMRRIGBLASTER), 350 USLCOM_DEV(SILABS, WMRRIGTALK), 351 USLCOM_DEV(SILABS, ZEPHYR_BIO), 352 USLCOM_DEV(SILABS2, DCU11CLONE), 353 USLCOM_DEV(SILABS3, GPRS_MODEM), 354 USLCOM_DEV(SILABS4, 100EU_MODEM), 355 USLCOM_DEV(SYNTECH, CYPHERLAB100), 356 USLCOM_DEV(USI, MC60), 357 USLCOM_DEV(VAISALA, CABLE), 358 USLCOM_DEV(WAGO, SERVICECABLE), 359 USLCOM_DEV(WAVESENSE, JAZZ), 360 USLCOM_DEV(WESTMOUNTAIN, RIGBLASTER_ADVANTAGE), 361 USLCOM_DEV(WIENERPLEINBAUS, PL512), 362 USLCOM_DEV(WIENERPLEINBAUS, RCM), 363 USLCOM_DEV(WIENERPLEINBAUS, MPOD), 364 USLCOM_DEV(WIENERPLEINBAUS, CML), 365 #undef USLCOM_DEV 366 }; 367 368 static device_method_t uslcom_methods[] = { 369 DEVMETHOD(device_probe, uslcom_probe), 370 DEVMETHOD(device_attach, uslcom_attach), 371 DEVMETHOD(device_detach, uslcom_detach), 372 DEVMETHOD_END 373 }; 374 375 static driver_t uslcom_driver = { 376 .name = "uslcom", 377 .methods = uslcom_methods, 378 .size = sizeof(struct uslcom_softc), 379 }; 380 381 DRIVER_MODULE(uslcom, uhub, uslcom_driver, NULL, NULL); 382 MODULE_DEPEND(uslcom, ucom, 1, 1, 1); 383 MODULE_DEPEND(uslcom, usb, 1, 1, 1); 384 MODULE_VERSION(uslcom, 1); 385 USB_PNP_HOST_INFO(uslcom_devs); 386 387 static void 388 uslcom_watchdog(void *arg) 389 { 390 struct uslcom_softc *sc = arg; 391 392 mtx_assert(&sc->sc_mtx, MA_OWNED); 393 394 usbd_transfer_start(sc->sc_xfer[USLCOM_CTRL_DT_RD]); 395 396 usb_callout_reset(&sc->sc_watchdog, 397 hz / 4, &uslcom_watchdog, sc); 398 } 399 400 static int 401 uslcom_probe(device_t dev) 402 { 403 struct usb_attach_arg *uaa = device_get_ivars(dev); 404 405 DPRINTFN(11, "\n"); 406 407 if (uaa->usb_mode != USB_MODE_HOST) { 408 return (ENXIO); 409 } 410 if (uaa->info.bConfigIndex != USLCOM_CONFIG_INDEX) { 411 return (ENXIO); 412 } 413 return (usbd_lookup_id_by_uaa(uslcom_devs, sizeof(uslcom_devs), uaa)); 414 } 415 416 static int 417 uslcom_attach(device_t dev) 418 { 419 struct usb_attach_arg *uaa = device_get_ivars(dev); 420 struct uslcom_softc *sc = device_get_softc(dev); 421 int error; 422 423 DPRINTFN(11, "\n"); 424 425 device_set_usb_desc(dev); 426 mtx_init(&sc->sc_mtx, "uslcom", NULL, MTX_DEF); 427 ucom_ref(&sc->sc_super_ucom); 428 usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 429 430 sc->sc_udev = uaa->device; 431 /* use the interface number from the USB interface descriptor */ 432 sc->sc_iface_no = uaa->info.bIfaceNum; 433 434 error = usbd_transfer_setup(uaa->device, 435 &uaa->info.bIfaceIndex, sc->sc_xfer, uslcom_config, 436 USLCOM_N_TRANSFER, sc, &sc->sc_mtx); 437 if (error) { 438 DPRINTF("one or more missing USB endpoints, " 439 "error=%s\n", usbd_errstr(error)); 440 goto detach; 441 } 442 sc->sc_partnum = uslcom_get_partnum(sc); 443 444 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, 445 &uslcom_callback, &sc->sc_mtx); 446 if (error) { 447 goto detach; 448 } 449 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); 450 451 return (0); 452 453 detach: 454 uslcom_detach(dev); 455 return (ENXIO); 456 } 457 458 static int 459 uslcom_detach(device_t dev) 460 { 461 struct uslcom_softc *sc = device_get_softc(dev); 462 463 DPRINTF("sc=%p\n", sc); 464 465 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); 466 usbd_transfer_unsetup(sc->sc_xfer, USLCOM_N_TRANSFER); 467 468 usb_callout_drain(&sc->sc_watchdog); 469 470 device_claim_softc(dev); 471 472 uslcom_free_softc(sc); 473 474 return (0); 475 } 476 477 UCOM_UNLOAD_DRAIN(uslcom); 478 479 static void 480 uslcom_free_softc(struct uslcom_softc *sc) 481 { 482 if (ucom_unref(&sc->sc_super_ucom)) { 483 mtx_destroy(&sc->sc_mtx); 484 device_free_softc(sc); 485 } 486 } 487 488 static void 489 uslcom_free(struct ucom_softc *ucom) 490 { 491 uslcom_free_softc(ucom->sc_parent); 492 } 493 494 static void 495 uslcom_cfg_open(struct ucom_softc *ucom) 496 { 497 struct uslcom_softc *sc = ucom->sc_parent; 498 struct usb_device_request req; 499 500 req.bmRequestType = USLCOM_WRITE; 501 req.bRequest = USLCOM_IFC_ENABLE; 502 USETW(req.wValue, USLCOM_IFC_ENABLE_EN); 503 USETW(req.wIndex, sc->sc_iface_no); 504 USETW(req.wLength, 0); 505 506 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 507 &req, NULL, 0, 1000)) { 508 DPRINTF("UART enable failed (ignored)\n"); 509 } 510 511 /* clear stall */ 512 usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_WR]); 513 usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_RD]); 514 515 /* start polling status */ 516 uslcom_watchdog(sc); 517 } 518 519 static void 520 uslcom_cfg_close(struct ucom_softc *ucom) 521 { 522 struct uslcom_softc *sc = ucom->sc_parent; 523 struct usb_device_request req; 524 525 /* stop polling status */ 526 usb_callout_stop(&sc->sc_watchdog); 527 528 req.bmRequestType = USLCOM_WRITE; 529 req.bRequest = USLCOM_IFC_ENABLE; 530 USETW(req.wValue, USLCOM_IFC_ENABLE_DIS); 531 USETW(req.wIndex, sc->sc_iface_no); 532 USETW(req.wLength, 0); 533 534 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 535 &req, NULL, 0, 1000)) { 536 DPRINTF("UART disable failed (ignored)\n"); 537 } 538 } 539 540 static uint8_t 541 uslcom_get_partnum(struct uslcom_softc *sc) 542 { 543 struct usb_device_request req; 544 uint8_t partnum; 545 546 /* Find specific chip type */ 547 partnum = 0; 548 req.bmRequestType = USLCOM_READ; 549 req.bRequest = USLCOM_VENDOR_SPECIFIC; 550 USETW(req.wValue, USLCOM_GET_PARTNUM); 551 USETW(req.wIndex, sc->sc_iface_no); 552 USETW(req.wLength, sizeof(partnum)); 553 554 if (usbd_do_request_flags(sc->sc_udev, NULL, 555 &req, &partnum, 0, NULL, 1000)) { 556 DPRINTF("GET_PARTNUM failed\n"); 557 } 558 559 return(partnum); 560 } 561 562 static void 563 uslcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) 564 { 565 struct uslcom_softc *sc = ucom->sc_parent; 566 struct usb_device_request req; 567 uint16_t ctl; 568 569 DPRINTF("onoff = %d\n", onoff); 570 571 ctl = onoff ? USLCOM_MHS_DTR_ON : 0; 572 ctl |= USLCOM_MHS_DTR_SET; 573 574 req.bmRequestType = USLCOM_WRITE; 575 req.bRequest = USLCOM_SET_MHS; 576 USETW(req.wValue, ctl); 577 USETW(req.wIndex, sc->sc_iface_no); 578 USETW(req.wLength, 0); 579 580 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 581 &req, NULL, 0, 1000)) { 582 DPRINTF("Setting DTR failed (ignored)\n"); 583 } 584 } 585 586 static void 587 uslcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) 588 { 589 struct uslcom_softc *sc = ucom->sc_parent; 590 struct usb_device_request req; 591 uint16_t ctl; 592 593 DPRINTF("onoff = %d\n", onoff); 594 595 ctl = onoff ? USLCOM_MHS_RTS_ON : 0; 596 ctl |= USLCOM_MHS_RTS_SET; 597 598 req.bmRequestType = USLCOM_WRITE; 599 req.bRequest = USLCOM_SET_MHS; 600 USETW(req.wValue, ctl); 601 USETW(req.wIndex, sc->sc_iface_no); 602 USETW(req.wLength, 0); 603 604 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 605 &req, NULL, 0, 1000)) { 606 DPRINTF("Setting DTR failed (ignored)\n"); 607 } 608 } 609 610 static int 611 uslcom_pre_param(struct ucom_softc *ucom, struct termios *t) 612 { 613 struct uslcom_softc *sc = ucom->sc_parent; 614 uint32_t maxspeed; 615 616 switch (sc->sc_partnum) { 617 case USLCOM_PARTNUM_CP2104: 618 case USLCOM_PARTNUM_CP2105: 619 maxspeed = 2000000; 620 break; 621 case USLCOM_PARTNUM_CP2101: 622 case USLCOM_PARTNUM_CP2102: 623 case USLCOM_PARTNUM_CP2103: 624 default: 625 /* 626 * Datasheet for cp2102 says 921600 max. Testing shows that 627 * 1228800 and 1843200 work fine. 628 */ 629 maxspeed = 1843200; 630 break; 631 } 632 if (t->c_ospeed <= 0 || t->c_ospeed > maxspeed) 633 return (EINVAL); 634 return (0); 635 } 636 637 static void 638 uslcom_cfg_param(struct ucom_softc *ucom, struct termios *t) 639 { 640 struct uslcom_softc *sc = ucom->sc_parent; 641 struct usb_device_request req; 642 uint32_t baudrate, flowctrl[4]; 643 uint16_t data; 644 645 DPRINTF("\n"); 646 647 baudrate = t->c_ospeed; 648 req.bmRequestType = USLCOM_WRITE; 649 req.bRequest = USLCOM_SET_BAUDRATE; 650 USETW(req.wValue, 0); 651 USETW(req.wIndex, sc->sc_iface_no); 652 USETW(req.wLength, sizeof(baudrate)); 653 654 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 655 &req, &baudrate, 0, 1000)) { 656 printf("Set baudrate failed (ignored)\n"); 657 } 658 659 if (t->c_cflag & CSTOPB) 660 data = USLCOM_STOP_BITS_2; 661 else 662 data = USLCOM_STOP_BITS_1; 663 if (t->c_cflag & PARENB) { 664 if (t->c_cflag & PARODD) 665 data |= USLCOM_PARITY_ODD; 666 else 667 data |= USLCOM_PARITY_EVEN; 668 } else 669 data |= USLCOM_PARITY_NONE; 670 switch (t->c_cflag & CSIZE) { 671 case CS5: 672 data |= USLCOM_SET_DATA_BITS(5); 673 break; 674 case CS6: 675 data |= USLCOM_SET_DATA_BITS(6); 676 break; 677 case CS7: 678 data |= USLCOM_SET_DATA_BITS(7); 679 break; 680 case CS8: 681 data |= USLCOM_SET_DATA_BITS(8); 682 break; 683 } 684 685 req.bmRequestType = USLCOM_WRITE; 686 req.bRequest = USLCOM_SET_LINE_CTL; 687 USETW(req.wValue, data); 688 USETW(req.wIndex, sc->sc_iface_no); 689 USETW(req.wLength, 0); 690 691 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 692 &req, NULL, 0, 1000)) { 693 DPRINTF("Set format failed (ignored)\n"); 694 } 695 696 if (t->c_cflag & CRTSCTS) { 697 flowctrl[0] = htole32(USLCOM_FLOW_DTR_ON | USLCOM_FLOW_CTS_HS); 698 flowctrl[1] = htole32(USLCOM_FLOW_RTS_HS); 699 } else { 700 flowctrl[0] = htole32(USLCOM_FLOW_DTR_ON); 701 flowctrl[1] = htole32(USLCOM_FLOW_RTS_ON); 702 } 703 flowctrl[2] = 0; 704 flowctrl[3] = 0; 705 req.bmRequestType = USLCOM_WRITE; 706 req.bRequest = USLCOM_SET_FLOW; 707 USETW(req.wValue, 0); 708 USETW(req.wIndex, sc->sc_iface_no); 709 USETW(req.wLength, sizeof(flowctrl)); 710 711 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 712 &req, flowctrl, 0, 1000)) { 713 DPRINTF("Set flowcontrol failed (ignored)\n"); 714 } 715 } 716 717 static void 718 uslcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) 719 { 720 struct uslcom_softc *sc = ucom->sc_parent; 721 722 DPRINTF("\n"); 723 724 /* XXX Note: sc_lsr is always zero */ 725 *lsr = sc->sc_lsr; 726 *msr = sc->sc_msr; 727 } 728 729 static void 730 uslcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) 731 { 732 struct uslcom_softc *sc = ucom->sc_parent; 733 struct usb_device_request req; 734 uint16_t brk = onoff ? USLCOM_SET_BREAK_ON : USLCOM_SET_BREAK_OFF; 735 736 req.bmRequestType = USLCOM_WRITE; 737 req.bRequest = USLCOM_SET_BREAK; 738 USETW(req.wValue, brk); 739 USETW(req.wIndex, sc->sc_iface_no); 740 USETW(req.wLength, 0); 741 742 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 743 &req, NULL, 0, 1000)) { 744 DPRINTF("Set BREAK failed (ignored)\n"); 745 } 746 } 747 748 static int 749 uslcom_ioctl(struct ucom_softc *ucom, uint32_t cmd, caddr_t data, 750 int flag, struct thread *td) 751 { 752 struct uslcom_softc *sc = ucom->sc_parent; 753 struct usb_device_request req; 754 int error = 0; 755 uint8_t latch; 756 757 DPRINTF("cmd=0x%08x\n", cmd); 758 759 switch (cmd) { 760 case USB_GET_GPIO: 761 if (sc->sc_partnum < USLCOM_PARTNUM_CP2103) { 762 error = ENODEV; 763 break; 764 } 765 req.bmRequestType = USLCOM_READ; 766 req.bRequest = USLCOM_VENDOR_SPECIFIC; 767 USETW(req.wValue, USLCOM_READ_LATCH); 768 USETW(req.wIndex, sc->sc_iface_no); 769 USETW(req.wLength, sizeof(latch)); 770 771 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 772 &req, &latch, 0, 1000)) { 773 DPRINTF("Get LATCH failed\n"); 774 error = EIO; 775 } 776 *(int *)data = latch; 777 break; 778 779 case USB_SET_GPIO: 780 if (sc->sc_partnum < USLCOM_PARTNUM_CP2103) 781 error = ENODEV; 782 else if ((sc->sc_partnum == USLCOM_PARTNUM_CP2103) || 783 (sc->sc_partnum == USLCOM_PARTNUM_CP2104)) { 784 req.bmRequestType = USLCOM_WRITE; 785 req.bRequest = USLCOM_VENDOR_SPECIFIC; 786 USETW(req.wValue, USLCOM_WRITE_LATCH); 787 USETW(req.wIndex, (*(int *)data)); 788 USETW(req.wLength, 0); 789 790 if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 791 &req, NULL, 0, 1000)) { 792 DPRINTF("Set LATCH failed\n"); 793 error = EIO; 794 } 795 } else 796 error = ENODEV; /* Not yet */ 797 break; 798 799 default: 800 DPRINTF("Unknown IOCTL\n"); 801 error = ENOIOCTL; 802 break; 803 } 804 return (error); 805 } 806 807 static void 808 uslcom_write_callback(struct usb_xfer *xfer, usb_error_t error) 809 { 810 struct uslcom_softc *sc = usbd_xfer_softc(xfer); 811 struct usb_page_cache *pc; 812 uint32_t actlen; 813 814 switch (USB_GET_STATE(xfer)) { 815 case USB_ST_SETUP: 816 case USB_ST_TRANSFERRED: 817 tr_setup: 818 pc = usbd_xfer_get_frame(xfer, 0); 819 if (ucom_get_data(&sc->sc_ucom, pc, 0, 820 USLCOM_BULK_BUF_SIZE, &actlen)) { 821 DPRINTF("actlen = %d\n", actlen); 822 823 usbd_xfer_set_frame_len(xfer, 0, actlen); 824 usbd_transfer_submit(xfer); 825 } 826 return; 827 828 default: /* Error */ 829 if (error != USB_ERR_CANCELLED) { 830 /* try to clear stall first */ 831 usbd_xfer_set_stall(xfer); 832 goto tr_setup; 833 } 834 return; 835 } 836 } 837 838 static void 839 uslcom_read_callback(struct usb_xfer *xfer, usb_error_t error) 840 { 841 struct uslcom_softc *sc = usbd_xfer_softc(xfer); 842 struct usb_page_cache *pc; 843 int actlen; 844 845 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 846 847 switch (USB_GET_STATE(xfer)) { 848 case USB_ST_TRANSFERRED: 849 pc = usbd_xfer_get_frame(xfer, 0); 850 ucom_put_data(&sc->sc_ucom, pc, 0, actlen); 851 852 case USB_ST_SETUP: 853 tr_setup: 854 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 855 usbd_transfer_submit(xfer); 856 return; 857 858 default: /* Error */ 859 if (error != USB_ERR_CANCELLED) { 860 /* try to clear stall first */ 861 usbd_xfer_set_stall(xfer); 862 goto tr_setup; 863 } 864 return; 865 } 866 } 867 868 static void 869 uslcom_control_callback(struct usb_xfer *xfer, usb_error_t error) 870 { 871 struct uslcom_softc *sc = usbd_xfer_softc(xfer); 872 struct usb_page_cache *pc; 873 struct usb_device_request req; 874 uint8_t msr = 0; 875 uint8_t buf; 876 877 switch (USB_GET_STATE(xfer)) { 878 case USB_ST_TRANSFERRED: 879 pc = usbd_xfer_get_frame(xfer, 1); 880 usbd_copy_out(pc, 0, &buf, sizeof(buf)); 881 if (buf & USLCOM_MHS_CTS) 882 msr |= SER_CTS; 883 if (buf & USLCOM_MHS_DSR) 884 msr |= SER_DSR; 885 if (buf & USLCOM_MHS_RI) 886 msr |= SER_RI; 887 if (buf & USLCOM_MHS_DCD) 888 msr |= SER_DCD; 889 890 if (msr != sc->sc_msr) { 891 DPRINTF("status change msr=0x%02x " 892 "(was 0x%02x)\n", msr, sc->sc_msr); 893 sc->sc_msr = msr; 894 ucom_status_change(&sc->sc_ucom); 895 } 896 break; 897 898 case USB_ST_SETUP: 899 req.bmRequestType = USLCOM_READ; 900 req.bRequest = USLCOM_GET_MDMSTS; 901 USETW(req.wValue, 0); 902 USETW(req.wIndex, sc->sc_iface_no); 903 USETW(req.wLength, sizeof(buf)); 904 905 usbd_xfer_set_frames(xfer, 2); 906 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 907 usbd_xfer_set_frame_len(xfer, 1, sizeof(buf)); 908 909 pc = usbd_xfer_get_frame(xfer, 0); 910 usbd_copy_in(pc, 0, &req, sizeof(req)); 911 usbd_transfer_submit(xfer); 912 break; 913 914 default: /* error */ 915 if (error != USB_ERR_CANCELLED) 916 DPRINTF("error=%s\n", usbd_errstr(error)); 917 break; 918 } 919 } 920 921 static void 922 uslcom_start_read(struct ucom_softc *ucom) 923 { 924 struct uslcom_softc *sc = ucom->sc_parent; 925 926 /* start read endpoint */ 927 usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_RD]); 928 } 929 930 static void 931 uslcom_stop_read(struct ucom_softc *ucom) 932 { 933 struct uslcom_softc *sc = ucom->sc_parent; 934 935 /* stop read endpoint */ 936 usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_RD]); 937 } 938 939 static void 940 uslcom_start_write(struct ucom_softc *ucom) 941 { 942 struct uslcom_softc *sc = ucom->sc_parent; 943 944 usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_WR]); 945 } 946 947 static void 948 uslcom_stop_write(struct ucom_softc *ucom) 949 { 950 struct uslcom_softc *sc = ucom->sc_parent; 951 952 usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_WR]); 953 } 954 955 static void 956 uslcom_poll(struct ucom_softc *ucom) 957 { 958 struct uslcom_softc *sc = ucom->sc_parent; 959 usbd_transfer_poll(sc->sc_xfer, USLCOM_N_TRANSFER); 960 }
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