1 /* $NetBSD: uchcom.c,v 1.1 2007/09/03 17:57:37 tshiozak Exp $ */
4 * Copyright (c) 2007, Takanori Watanabe
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Copyright (c) 2007 The NetBSD Foundation, Inc.
31 * All rights reserved.
33 * This code is derived from software contributed to The NetBSD Foundation
34 * by Takuya SHIOZAKI (tshiozak@netbsd.org).
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the NetBSD
47 * Foundation, Inc. and its contributors.
48 * 4. Neither the name of The NetBSD Foundation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
53 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
54 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
55 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
56 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
57 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
58 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
59 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
60 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
61 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
62 * POSSIBILITY OF SUCH DAMAGE.
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD$");
69 * driver for WinChipHead CH341/340, the worst USB-serial chip in the world.
72 #include <sys/stdint.h>
73 #include <sys/stddef.h>
74 #include <sys/param.h>
75 #include <sys/queue.h>
76 #include <sys/types.h>
77 #include <sys/systm.h>
78 #include <sys/kernel.h>
80 #include <sys/linker_set.h>
81 #include <sys/module.h>
83 #include <sys/mutex.h>
84 #include <sys/condvar.h>
85 #include <sys/sysctl.h>
87 #include <sys/unistd.h>
88 #include <sys/callout.h>
89 #include <sys/malloc.h>
92 #include <dev/usb/usb.h>
93 #include <dev/usb/usbdi.h>
94 #include <dev/usb/usbdi_util.h>
97 #define USB_DEBUG_VAR uchcom_debug
98 #include <dev/usb/usb_debug.h>
99 #include <dev/usb/usb_process.h>
101 #include <dev/usb/serial/usb_serial.h>
104 static int uchcom_debug = 0;
106 SYSCTL_NODE(_hw_usb, OID_AUTO, uchcom, CTLFLAG_RW, 0, "USB uchcom");
107 SYSCTL_INT(_hw_usb_uchcom, OID_AUTO, debug, CTLFLAG_RW,
108 &uchcom_debug, 0, "uchcom debug level");
111 #define UCHCOM_IFACE_INDEX 0
112 #define UCHCOM_CONFIG_INDEX 0
114 #define UCHCOM_REV_CH340 0x0250
115 #define UCHCOM_INPUT_BUF_SIZE 8
117 #define UCHCOM_REQ_GET_VERSION 0x5F
118 #define UCHCOM_REQ_READ_REG 0x95
119 #define UCHCOM_REQ_WRITE_REG 0x9A
120 #define UCHCOM_REQ_RESET 0xA1
121 #define UCHCOM_REQ_SET_DTRRTS 0xA4
123 #define UCHCOM_REG_STAT1 0x06
124 #define UCHCOM_REG_STAT2 0x07
125 #define UCHCOM_REG_BPS_PRE 0x12
126 #define UCHCOM_REG_BPS_DIV 0x13
127 #define UCHCOM_REG_BPS_MOD 0x14
128 #define UCHCOM_REG_BPS_PAD 0x0F
129 #define UCHCOM_REG_BREAK1 0x05
130 #define UCHCOM_REG_BREAK2 0x18
131 #define UCHCOM_REG_LCR1 0x18
132 #define UCHCOM_REG_LCR2 0x25
134 #define UCHCOM_VER_20 0x20
136 #define UCHCOM_BASE_UNKNOWN 0
137 #define UCHCOM_BPS_MOD_BASE 20000000
138 #define UCHCOM_BPS_MOD_BASE_OFS 1100
140 #define UCHCOM_DTR_MASK 0x20
141 #define UCHCOM_RTS_MASK 0x40
143 #define UCHCOM_BRK1_MASK 0x01
144 #define UCHCOM_BRK2_MASK 0x40
146 #define UCHCOM_LCR1_MASK 0xAF
147 #define UCHCOM_LCR2_MASK 0x07
148 #define UCHCOM_LCR1_PARENB 0x80
149 #define UCHCOM_LCR2_PAREVEN 0x07
150 #define UCHCOM_LCR2_PARODD 0x06
151 #define UCHCOM_LCR2_PARMARK 0x05
152 #define UCHCOM_LCR2_PARSPACE 0x04
154 #define UCHCOM_INTR_STAT1 0x02
155 #define UCHCOM_INTR_STAT2 0x03
156 #define UCHCOM_INTR_LEAST 4
158 #define UCHCOM_BULK_BUF_SIZE 1024 /* bytes */
167 struct uchcom_softc {
168 struct ucom_super_softc sc_super_ucom;
169 struct ucom_softc sc_ucom;
171 struct usb_xfer *sc_xfer[UCHCOM_N_TRANSFER];
172 struct usb_device *sc_udev;
175 uint8_t sc_dtr; /* local copy */
176 uint8_t sc_rts; /* local copy */
179 uint8_t sc_lsr; /* local status register */
182 struct uchcom_divider {
183 uint8_t dv_prescaler;
188 struct uchcom_divider_record {
191 uint32_t dvr_base_clock;
192 struct uchcom_divider dvr_divider;
195 static const struct uchcom_divider_record dividers[] =
197 {307200, 307200, UCHCOM_BASE_UNKNOWN, {7, 0xD9, 0}},
198 {921600, 921600, UCHCOM_BASE_UNKNOWN, {7, 0xF3, 0}},
199 {2999999, 23530, 6000000, {3, 0, 0}},
200 {23529, 2942, 750000, {2, 0, 0}},
201 {2941, 368, 93750, {1, 0, 0}},
202 {367, 1, 11719, {0, 0, 0}},
205 #define NUM_DIVIDERS (sizeof (dividers) / sizeof (dividers[0]))
207 static const struct usb_device_id uchcom_devs[] = {
208 {USB_VPI(USB_VENDOR_WCH, USB_PRODUCT_WCH_CH341SER, 0)},
213 static int uchcom_pre_param(struct ucom_softc *, struct termios *);
214 static void uchcom_cfg_get_status(struct ucom_softc *, uint8_t *,
216 static void uchcom_cfg_param(struct ucom_softc *, struct termios *);
217 static void uchcom_cfg_set_break(struct ucom_softc *, uint8_t);
218 static void uchcom_cfg_set_dtr(struct ucom_softc *, uint8_t);
219 static void uchcom_cfg_set_rts(struct ucom_softc *, uint8_t);
220 static void uchcom_start_read(struct ucom_softc *);
221 static void uchcom_start_write(struct ucom_softc *);
222 static void uchcom_stop_read(struct ucom_softc *);
223 static void uchcom_stop_write(struct ucom_softc *);
224 static void uchcom_update_version(struct uchcom_softc *);
225 static void uchcom_convert_status(struct uchcom_softc *, uint8_t);
226 static void uchcom_update_status(struct uchcom_softc *);
227 static void uchcom_set_dtrrts(struct uchcom_softc *);
228 static int uchcom_calc_divider_settings(struct uchcom_divider *, uint32_t);
229 static void uchcom_set_dte_rate(struct uchcom_softc *, uint32_t);
230 static void uchcom_set_line_control(struct uchcom_softc *, tcflag_t);
231 static void uchcom_clear_chip(struct uchcom_softc *);
232 static void uchcom_reset_chip(struct uchcom_softc *);
234 static device_probe_t uchcom_probe;
235 static device_attach_t uchcom_attach;
236 static device_detach_t uchcom_detach;
238 static usb_callback_t uchcom_intr_callback;
239 static usb_callback_t uchcom_write_callback;
240 static usb_callback_t uchcom_read_callback;
242 static const struct usb_config uchcom_config_data[UCHCOM_N_TRANSFER] = {
244 [UCHCOM_BULK_DT_WR] = {
246 .endpoint = UE_ADDR_ANY,
247 .direction = UE_DIR_OUT,
248 .bufsize = UCHCOM_BULK_BUF_SIZE,
249 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
250 .callback = &uchcom_write_callback,
253 [UCHCOM_BULK_DT_RD] = {
255 .endpoint = UE_ADDR_ANY,
256 .direction = UE_DIR_IN,
257 .bufsize = UCHCOM_BULK_BUF_SIZE,
258 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
259 .callback = &uchcom_read_callback,
262 [UCHCOM_INTR_DT_RD] = {
263 .type = UE_INTERRUPT,
264 .endpoint = UE_ADDR_ANY,
265 .direction = UE_DIR_IN,
266 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
267 .bufsize = 0, /* use wMaxPacketSize */
268 .callback = &uchcom_intr_callback,
272 static struct ucom_callback uchcom_callback = {
273 .ucom_cfg_get_status = &uchcom_cfg_get_status,
274 .ucom_cfg_set_dtr = &uchcom_cfg_set_dtr,
275 .ucom_cfg_set_rts = &uchcom_cfg_set_rts,
276 .ucom_cfg_set_break = &uchcom_cfg_set_break,
277 .ucom_cfg_param = &uchcom_cfg_param,
278 .ucom_pre_param = &uchcom_pre_param,
279 .ucom_start_read = &uchcom_start_read,
280 .ucom_stop_read = &uchcom_stop_read,
281 .ucom_start_write = &uchcom_start_write,
282 .ucom_stop_write = &uchcom_stop_write,
285 /* ----------------------------------------------------------------------
286 * driver entry points
290 uchcom_probe(device_t dev)
292 struct usb_attach_arg *uaa = device_get_ivars(dev);
296 if (uaa->usb_mode != USB_MODE_HOST) {
299 if (uaa->info.bConfigIndex != UCHCOM_CONFIG_INDEX) {
302 if (uaa->info.bIfaceIndex != UCHCOM_IFACE_INDEX) {
305 return (usbd_lookup_id_by_uaa(uchcom_devs, sizeof(uchcom_devs), uaa));
309 uchcom_attach(device_t dev)
311 struct uchcom_softc *sc = device_get_softc(dev);
312 struct usb_attach_arg *uaa = device_get_ivars(dev);
318 device_set_usb_desc(dev);
319 mtx_init(&sc->sc_mtx, "uchcom", NULL, MTX_DEF);
321 sc->sc_udev = uaa->device;
323 switch (uaa->info.bcdDevice) {
324 case UCHCOM_REV_CH340:
325 device_printf(dev, "CH340 detected\n");
328 device_printf(dev, "CH341 detected\n");
332 iface_index = UCHCOM_IFACE_INDEX;
333 error = usbd_transfer_setup(uaa->device,
334 &iface_index, sc->sc_xfer, uchcom_config_data,
335 UCHCOM_N_TRANSFER, sc, &sc->sc_mtx);
338 DPRINTF("one or more missing USB endpoints, "
339 "error=%s\n", usbd_errstr(error));
343 * Do the initialization during attach so that the system does not
346 uchcom_update_version(sc);
347 uchcom_clear_chip(sc);
348 uchcom_reset_chip(sc);
349 uchcom_update_status(sc);
354 /* clear stall at first run */
355 mtx_lock(&sc->sc_mtx);
356 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
357 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
358 mtx_unlock(&sc->sc_mtx);
360 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
361 &uchcom_callback, &sc->sc_mtx);
373 uchcom_detach(device_t dev)
375 struct uchcom_softc *sc = device_get_softc(dev);
379 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom, 1);
380 usbd_transfer_unsetup(sc->sc_xfer, UCHCOM_N_TRANSFER);
381 mtx_destroy(&sc->sc_mtx);
386 /* ----------------------------------------------------------------------
391 uchcom_ctrl_write(struct uchcom_softc *sc, uint8_t reqno,
392 uint16_t value, uint16_t index)
394 struct usb_device_request req;
396 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
397 req.bRequest = reqno;
398 USETW(req.wValue, value);
399 USETW(req.wIndex, index);
400 USETW(req.wLength, 0);
402 ucom_cfg_do_request(sc->sc_udev,
403 &sc->sc_ucom, &req, NULL, 0, 1000);
407 uchcom_ctrl_read(struct uchcom_softc *sc, uint8_t reqno,
408 uint16_t value, uint16_t index, void *buf, uint16_t buflen)
410 struct usb_device_request req;
412 req.bmRequestType = UT_READ_VENDOR_DEVICE;
413 req.bRequest = reqno;
414 USETW(req.wValue, value);
415 USETW(req.wIndex, index);
416 USETW(req.wLength, buflen);
418 ucom_cfg_do_request(sc->sc_udev,
419 &sc->sc_ucom, &req, buf, USB_SHORT_XFER_OK, 1000);
423 uchcom_write_reg(struct uchcom_softc *sc,
424 uint8_t reg1, uint8_t val1, uint8_t reg2, uint8_t val2)
426 DPRINTF("0x%02X<-0x%02X, 0x%02X<-0x%02X\n",
427 (unsigned)reg1, (unsigned)val1,
428 (unsigned)reg2, (unsigned)val2);
430 sc, UCHCOM_REQ_WRITE_REG,
431 reg1 | ((uint16_t)reg2 << 8), val1 | ((uint16_t)val2 << 8));
435 uchcom_read_reg(struct uchcom_softc *sc,
436 uint8_t reg1, uint8_t *rval1, uint8_t reg2, uint8_t *rval2)
438 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
441 sc, UCHCOM_REQ_READ_REG,
442 reg1 | ((uint16_t)reg2 << 8), 0, buf, sizeof(buf));
444 DPRINTF("0x%02X->0x%02X, 0x%02X->0x%02X\n",
445 (unsigned)reg1, (unsigned)buf[0],
446 (unsigned)reg2, (unsigned)buf[1]);
455 uchcom_get_version(struct uchcom_softc *sc, uint8_t *rver)
457 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
460 sc, UCHCOM_REQ_GET_VERSION, 0, 0, buf, sizeof(buf));
467 uchcom_get_status(struct uchcom_softc *sc, uint8_t *rval)
469 uchcom_read_reg(sc, UCHCOM_REG_STAT1, rval, UCHCOM_REG_STAT2, NULL);
473 uchcom_set_dtrrts_10(struct uchcom_softc *sc, uint8_t val)
475 uchcom_write_reg(sc, UCHCOM_REG_STAT1, val, UCHCOM_REG_STAT1, val);
479 uchcom_set_dtrrts_20(struct uchcom_softc *sc, uint8_t val)
481 uchcom_ctrl_write(sc, UCHCOM_REQ_SET_DTRRTS, val, 0);
485 /* ----------------------------------------------------------------------
490 uchcom_update_version(struct uchcom_softc *sc)
492 uchcom_get_version(sc, &sc->sc_version);
496 uchcom_convert_status(struct uchcom_softc *sc, uint8_t cur)
498 sc->sc_dtr = !(cur & UCHCOM_DTR_MASK);
499 sc->sc_rts = !(cur & UCHCOM_RTS_MASK);
502 sc->sc_msr = (cur << 4) | ((sc->sc_msr >> 4) ^ cur);
506 uchcom_update_status(struct uchcom_softc *sc)
510 uchcom_get_status(sc, &cur);
511 uchcom_convert_status(sc, cur);
516 uchcom_set_dtrrts(struct uchcom_softc *sc)
521 val |= UCHCOM_DTR_MASK;
523 val |= UCHCOM_RTS_MASK;
525 if (sc->sc_version < UCHCOM_VER_20)
526 uchcom_set_dtrrts_10(sc, ~val);
528 uchcom_set_dtrrts_20(sc, ~val);
532 uchcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
534 struct uchcom_softc *sc = ucom->sc_parent;
538 uchcom_read_reg(sc, UCHCOM_REG_BREAK1, &brk1, UCHCOM_REG_BREAK2, &brk2);
540 /* on - clear bits */
541 brk1 &= ~UCHCOM_BRK1_MASK;
542 brk2 &= ~UCHCOM_BRK2_MASK;
545 brk1 |= UCHCOM_BRK1_MASK;
546 brk2 |= UCHCOM_BRK2_MASK;
548 uchcom_write_reg(sc, UCHCOM_REG_BREAK1, brk1, UCHCOM_REG_BREAK2, brk2);
552 uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate)
554 const struct uchcom_divider_record *rp;
561 for (i = 0; i != NUM_DIVIDERS; i++) {
562 if (dividers[i].dvr_high >= rate &&
563 dividers[i].dvr_low <= rate) {
571 dp->dv_prescaler = rp->dvr_divider.dv_prescaler;
572 if (rp->dvr_base_clock == UCHCOM_BASE_UNKNOWN)
573 dp->dv_div = rp->dvr_divider.dv_div;
575 div = rp->dvr_base_clock / rate;
576 rem = rp->dvr_base_clock % rate;
577 if (div == 0 || div >= 0xFF)
579 if ((rem << 1) >= rate)
581 dp->dv_div = (uint8_t)-div;
584 mod = UCHCOM_BPS_MOD_BASE / rate + UCHCOM_BPS_MOD_BASE_OFS;
587 dp->dv_mod = mod / 0x100;
593 uchcom_set_dte_rate(struct uchcom_softc *sc, uint32_t rate)
595 struct uchcom_divider dv;
597 if (uchcom_calc_divider_settings(&dv, rate))
601 UCHCOM_REG_BPS_PRE, dv.dv_prescaler,
602 UCHCOM_REG_BPS_DIV, dv.dv_div);
604 UCHCOM_REG_BPS_MOD, dv.dv_mod,
605 UCHCOM_REG_BPS_PAD, 0);
609 uchcom_set_line_control(struct uchcom_softc *sc, tcflag_t cflag)
614 uchcom_read_reg(sc, UCHCOM_REG_LCR1, &lcr1, UCHCOM_REG_LCR2, &lcr2);
616 lcr1 &= ~UCHCOM_LCR1_MASK;
617 lcr2 &= ~UCHCOM_LCR2_MASK;
620 * XXX: it is difficult to handle the line control appropriately:
621 * - CS8, !CSTOPB and any parity mode seems ok, but
622 * - the chip doesn't have the function to calculate parity
624 * - it is unclear that the chip supports CS5,6 mode.
625 * - it is unclear how to handle stop bits.
628 if (cflag & PARENB) {
629 lcr1 |= UCHCOM_LCR1_PARENB;
631 lcr2 |= UCHCOM_LCR2_PARODD;
633 lcr2 |= UCHCOM_LCR2_PAREVEN;
635 uchcom_write_reg(sc, UCHCOM_REG_LCR1, lcr1, UCHCOM_REG_LCR2, lcr2);
639 uchcom_clear_chip(struct uchcom_softc *sc)
642 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0, 0);
646 uchcom_reset_chip(struct uchcom_softc *sc)
656 uchcom_read_reg(sc, UCHCOM_REG_LCR1, &lcr1, UCHCOM_REG_LCR2, &lcr2);
657 uchcom_read_reg(sc, UCHCOM_REG_BPS_PRE, &pre, UCHCOM_REG_BPS_DIV, &div);
658 uchcom_read_reg(sc, UCHCOM_REG_BPS_MOD, &mod, UCHCOM_REG_BPS_PAD, NULL);
662 val |= (uint16_t)(lcr1 & 0xF0) << 8;
664 val |= (uint16_t)(lcr2 & 0x0F) << 8;
668 idx |= (uint16_t)div << 8;
673 DPRINTF("reset v=0x%04X, i=0x%04X\n", val, idx);
675 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, val, idx);
678 /* ----------------------------------------------------------------------
682 uchcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
684 struct uchcom_softc *sc = ucom->sc_parent;
693 uchcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
695 struct uchcom_softc *sc = ucom->sc_parent;
697 DPRINTF("onoff = %d\n", onoff);
700 uchcom_set_dtrrts(sc);
704 uchcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
706 struct uchcom_softc *sc = ucom->sc_parent;
708 DPRINTF("onoff = %d\n", onoff);
711 uchcom_set_dtrrts(sc);
715 uchcom_pre_param(struct ucom_softc *ucom, struct termios *t)
717 struct uchcom_divider dv;
719 switch (t->c_cflag & CSIZE) {
728 if (uchcom_calc_divider_settings(&dv, t->c_ospeed)) {
731 return (0); /* success */
735 uchcom_cfg_param(struct ucom_softc *ucom, struct termios *t)
737 struct uchcom_softc *sc = ucom->sc_parent;
739 uchcom_set_line_control(sc, t->c_cflag);
740 uchcom_set_dte_rate(sc, t->c_ospeed);
744 uchcom_start_read(struct ucom_softc *ucom)
746 struct uchcom_softc *sc = ucom->sc_parent;
748 /* start interrupt endpoint */
749 usbd_transfer_start(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
751 /* start read endpoint */
752 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
756 uchcom_stop_read(struct ucom_softc *ucom)
758 struct uchcom_softc *sc = ucom->sc_parent;
760 /* stop interrupt endpoint */
761 usbd_transfer_stop(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
763 /* stop read endpoint */
764 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
768 uchcom_start_write(struct ucom_softc *ucom)
770 struct uchcom_softc *sc = ucom->sc_parent;
772 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
776 uchcom_stop_write(struct ucom_softc *ucom)
778 struct uchcom_softc *sc = ucom->sc_parent;
780 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
783 /* ----------------------------------------------------------------------
784 * callback when the modem status is changed.
787 uchcom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
789 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
790 struct usb_page_cache *pc;
791 uint8_t buf[UCHCOM_INTR_LEAST];
794 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
796 switch (USB_GET_STATE(xfer)) {
797 case USB_ST_TRANSFERRED:
799 DPRINTF("actlen = %u\n", actlen);
801 if (actlen >= UCHCOM_INTR_LEAST) {
802 pc = usbd_xfer_get_frame(xfer, 0);
803 usbd_copy_out(pc, 0, buf, UCHCOM_INTR_LEAST);
805 DPRINTF("data = 0x%02X 0x%02X 0x%02X 0x%02X\n",
806 (unsigned)buf[0], (unsigned)buf[1],
807 (unsigned)buf[2], (unsigned)buf[3]);
809 uchcom_convert_status(sc, buf[UCHCOM_INTR_STAT1]);
810 ucom_status_change(&sc->sc_ucom);
814 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
815 usbd_transfer_submit(xfer);
819 if (error != USB_ERR_CANCELLED) {
820 /* try to clear stall first */
821 usbd_xfer_set_stall(xfer);
829 uchcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
831 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
832 struct usb_page_cache *pc;
835 switch (USB_GET_STATE(xfer)) {
837 case USB_ST_TRANSFERRED:
839 pc = usbd_xfer_get_frame(xfer, 0);
840 if (ucom_get_data(&sc->sc_ucom, pc, 0,
841 UCHCOM_BULK_BUF_SIZE, &actlen)) {
843 DPRINTF("actlen = %d\n", actlen);
845 usbd_xfer_set_frame_len(xfer, 0, actlen);
846 usbd_transfer_submit(xfer);
851 if (error != USB_ERR_CANCELLED) {
852 /* try to clear stall first */
853 usbd_xfer_set_stall(xfer);
862 uchcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
864 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
865 struct usb_page_cache *pc;
868 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
870 switch (USB_GET_STATE(xfer)) {
871 case USB_ST_TRANSFERRED:
872 pc = usbd_xfer_get_frame(xfer, 0);
873 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
877 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
878 usbd_transfer_submit(xfer);
882 if (error != USB_ERR_CANCELLED) {
883 /* try to clear stall first */
884 usbd_xfer_set_stall(xfer);
891 static device_method_t uchcom_methods[] = {
892 /* Device interface */
893 DEVMETHOD(device_probe, uchcom_probe),
894 DEVMETHOD(device_attach, uchcom_attach),
895 DEVMETHOD(device_detach, uchcom_detach),
900 static driver_t uchcom_driver = {
903 sizeof(struct uchcom_softc)
906 static devclass_t uchcom_devclass;
908 DRIVER_MODULE(uchcom, uhub, uchcom_driver, uchcom_devclass, NULL, 0);
909 MODULE_DEPEND(uchcom, ucom, 1, 1, 1);
910 MODULE_DEPEND(uchcom, usb, 1, 1, 1);