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.
45 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
46 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
47 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
48 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
49 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
50 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
51 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
52 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
53 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
54 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
55 * POSSIBILITY OF SUCH DAMAGE.
58 #include <sys/cdefs.h>
59 __FBSDID("$FreeBSD$");
62 * Driver for WinChipHead CH341/340, the worst USB-serial chip in the
66 #include <sys/stdint.h>
67 #include <sys/stddef.h>
68 #include <sys/param.h>
69 #include <sys/queue.h>
70 #include <sys/types.h>
71 #include <sys/systm.h>
72 #include <sys/kernel.h>
74 #include <sys/module.h>
76 #include <sys/mutex.h>
77 #include <sys/condvar.h>
78 #include <sys/sysctl.h>
80 #include <sys/unistd.h>
81 #include <sys/callout.h>
82 #include <sys/malloc.h>
85 #include <dev/usb/usb.h>
86 #include <dev/usb/usbdi.h>
87 #include <dev/usb/usbdi_util.h>
90 #define USB_DEBUG_VAR uchcom_debug
91 #include <dev/usb/usb_debug.h>
92 #include <dev/usb/usb_process.h>
94 #include <dev/usb/serial/usb_serial.h>
97 static int uchcom_debug = 0;
99 static SYSCTL_NODE(_hw_usb, OID_AUTO, uchcom, CTLFLAG_RW, 0, "USB uchcom");
100 SYSCTL_INT(_hw_usb_uchcom, OID_AUTO, debug, CTLFLAG_RWTUN,
101 &uchcom_debug, 0, "uchcom debug level");
104 #define UCHCOM_IFACE_INDEX 0
105 #define UCHCOM_CONFIG_INDEX 0
107 #define UCHCOM_REV_CH340 0x0250
108 #define UCHCOM_INPUT_BUF_SIZE 8
110 #define UCHCOM_REQ_GET_VERSION 0x5F
111 #define UCHCOM_REQ_READ_REG 0x95
112 #define UCHCOM_REQ_WRITE_REG 0x9A
113 #define UCHCOM_REQ_RESET 0xA1
114 #define UCHCOM_REQ_SET_DTRRTS 0xA4
116 #define UCHCOM_REG_STAT1 0x06
117 #define UCHCOM_REG_STAT2 0x07
118 #define UCHCOM_REG_BPS_PRE 0x12
119 #define UCHCOM_REG_BPS_DIV 0x13
120 #define UCHCOM_REG_BPS_MOD 0x14
121 #define UCHCOM_REG_BPS_PAD 0x0F
122 #define UCHCOM_REG_BREAK1 0x05
123 #define UCHCOM_REG_BREAK2 0x18
124 #define UCHCOM_REG_LCR1 0x18
125 #define UCHCOM_REG_LCR2 0x25
127 #define UCHCOM_VER_20 0x20
129 #define UCHCOM_BASE_UNKNOWN 0
130 #define UCHCOM_BPS_MOD_BASE 20000000
131 #define UCHCOM_BPS_MOD_BASE_OFS 1100
133 #define UCHCOM_DTR_MASK 0x20
134 #define UCHCOM_RTS_MASK 0x40
136 #define UCHCOM_BRK1_MASK 0x01
137 #define UCHCOM_BRK2_MASK 0x40
139 #define UCHCOM_LCR1_MASK 0xAF
140 #define UCHCOM_LCR2_MASK 0x07
141 #define UCHCOM_LCR1_PARENB 0x80
142 #define UCHCOM_LCR2_PAREVEN 0x07
143 #define UCHCOM_LCR2_PARODD 0x06
144 #define UCHCOM_LCR2_PARMARK 0x05
145 #define UCHCOM_LCR2_PARSPACE 0x04
147 #define UCHCOM_INTR_STAT1 0x02
148 #define UCHCOM_INTR_STAT2 0x03
149 #define UCHCOM_INTR_LEAST 4
151 #define UCHCOM_BULK_BUF_SIZE 1024 /* bytes */
160 struct uchcom_softc {
161 struct ucom_super_softc sc_super_ucom;
162 struct ucom_softc sc_ucom;
164 struct usb_xfer *sc_xfer[UCHCOM_N_TRANSFER];
165 struct usb_device *sc_udev;
168 uint8_t sc_dtr; /* local copy */
169 uint8_t sc_rts; /* local copy */
172 uint8_t sc_lsr; /* local status register */
175 struct uchcom_divider {
176 uint8_t dv_prescaler;
181 struct uchcom_divider_record {
184 uint32_t dvr_base_clock;
185 struct uchcom_divider dvr_divider;
188 static const struct uchcom_divider_record dividers[] =
190 {307200, 307200, UCHCOM_BASE_UNKNOWN, {7, 0xD9, 0}},
191 {921600, 921600, UCHCOM_BASE_UNKNOWN, {7, 0xF3, 0}},
192 {2999999, 23530, 6000000, {3, 0, 0}},
193 {23529, 2942, 750000, {2, 0, 0}},
194 {2941, 368, 93750, {1, 0, 0}},
195 {367, 1, 11719, {0, 0, 0}},
198 #define NUM_DIVIDERS (sizeof (dividers) / sizeof (dividers[0]))
200 static const STRUCT_USB_HOST_ID uchcom_devs[] = {
201 {USB_VPI(USB_VENDOR_WCH, USB_PRODUCT_WCH_CH341SER, 0)},
202 {USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER, 0)},
203 {USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER_2, 0)},
208 static void uchcom_free(struct ucom_softc *);
209 static int uchcom_pre_param(struct ucom_softc *, struct termios *);
210 static void uchcom_cfg_get_status(struct ucom_softc *, uint8_t *,
212 static void uchcom_cfg_open(struct ucom_softc *ucom);
213 static void uchcom_cfg_param(struct ucom_softc *, struct termios *);
214 static void uchcom_cfg_set_break(struct ucom_softc *, uint8_t);
215 static void uchcom_cfg_set_dtr(struct ucom_softc *, uint8_t);
216 static void uchcom_cfg_set_rts(struct ucom_softc *, uint8_t);
217 static void uchcom_start_read(struct ucom_softc *);
218 static void uchcom_start_write(struct ucom_softc *);
219 static void uchcom_stop_read(struct ucom_softc *);
220 static void uchcom_stop_write(struct ucom_softc *);
221 static void uchcom_update_version(struct uchcom_softc *);
222 static void uchcom_convert_status(struct uchcom_softc *, uint8_t);
223 static void uchcom_update_status(struct uchcom_softc *);
224 static void uchcom_set_dtr_rts(struct uchcom_softc *);
225 static int uchcom_calc_divider_settings(struct uchcom_divider *, uint32_t);
226 static void uchcom_set_baudrate(struct uchcom_softc *, uint32_t);
227 static void uchcom_poll(struct ucom_softc *ucom);
229 static device_probe_t uchcom_probe;
230 static device_attach_t uchcom_attach;
231 static device_detach_t uchcom_detach;
232 static void uchcom_free_softc(struct uchcom_softc *);
234 static usb_callback_t uchcom_intr_callback;
235 static usb_callback_t uchcom_write_callback;
236 static usb_callback_t uchcom_read_callback;
238 static const struct usb_config uchcom_config_data[UCHCOM_N_TRANSFER] = {
240 [UCHCOM_BULK_DT_WR] = {
242 .endpoint = UE_ADDR_ANY,
243 .direction = UE_DIR_OUT,
244 .bufsize = UCHCOM_BULK_BUF_SIZE,
245 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
246 .callback = &uchcom_write_callback,
249 [UCHCOM_BULK_DT_RD] = {
251 .endpoint = UE_ADDR_ANY,
252 .direction = UE_DIR_IN,
253 .bufsize = UCHCOM_BULK_BUF_SIZE,
254 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
255 .callback = &uchcom_read_callback,
258 [UCHCOM_INTR_DT_RD] = {
259 .type = UE_INTERRUPT,
260 .endpoint = UE_ADDR_ANY,
261 .direction = UE_DIR_IN,
262 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
263 .bufsize = 0, /* use wMaxPacketSize */
264 .callback = &uchcom_intr_callback,
268 static struct ucom_callback uchcom_callback = {
269 .ucom_cfg_get_status = &uchcom_cfg_get_status,
270 .ucom_cfg_set_dtr = &uchcom_cfg_set_dtr,
271 .ucom_cfg_set_rts = &uchcom_cfg_set_rts,
272 .ucom_cfg_set_break = &uchcom_cfg_set_break,
273 .ucom_cfg_open = &uchcom_cfg_open,
274 .ucom_cfg_param = &uchcom_cfg_param,
275 .ucom_pre_param = &uchcom_pre_param,
276 .ucom_start_read = &uchcom_start_read,
277 .ucom_stop_read = &uchcom_stop_read,
278 .ucom_start_write = &uchcom_start_write,
279 .ucom_stop_write = &uchcom_stop_write,
280 .ucom_poll = &uchcom_poll,
281 .ucom_free = &uchcom_free,
284 /* ----------------------------------------------------------------------
285 * driver entry points
289 uchcom_probe(device_t dev)
291 struct usb_attach_arg *uaa = device_get_ivars(dev);
295 if (uaa->usb_mode != USB_MODE_HOST) {
298 if (uaa->info.bConfigIndex != UCHCOM_CONFIG_INDEX) {
301 if (uaa->info.bIfaceIndex != UCHCOM_IFACE_INDEX) {
304 return (usbd_lookup_id_by_uaa(uchcom_devs, sizeof(uchcom_devs), uaa));
308 uchcom_attach(device_t dev)
310 struct uchcom_softc *sc = device_get_softc(dev);
311 struct usb_attach_arg *uaa = device_get_ivars(dev);
317 device_set_usb_desc(dev);
318 mtx_init(&sc->sc_mtx, "uchcom", NULL, MTX_DEF);
319 ucom_ref(&sc->sc_super_ucom);
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 /* clear stall at first run */
344 mtx_lock(&sc->sc_mtx);
345 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
346 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
347 mtx_unlock(&sc->sc_mtx);
349 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
350 &uchcom_callback, &sc->sc_mtx);
354 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
364 uchcom_detach(device_t dev)
366 struct uchcom_softc *sc = device_get_softc(dev);
370 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
371 usbd_transfer_unsetup(sc->sc_xfer, UCHCOM_N_TRANSFER);
373 device_claim_softc(dev);
375 uchcom_free_softc(sc);
380 UCOM_UNLOAD_DRAIN(uchcom);
383 uchcom_free_softc(struct uchcom_softc *sc)
385 if (ucom_unref(&sc->sc_super_ucom)) {
386 mtx_destroy(&sc->sc_mtx);
387 device_free_softc(sc);
392 uchcom_free(struct ucom_softc *ucom)
394 uchcom_free_softc(ucom->sc_parent);
397 /* ----------------------------------------------------------------------
402 uchcom_ctrl_write(struct uchcom_softc *sc, uint8_t reqno,
403 uint16_t value, uint16_t index)
405 struct usb_device_request req;
407 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
408 req.bRequest = reqno;
409 USETW(req.wValue, value);
410 USETW(req.wIndex, index);
411 USETW(req.wLength, 0);
413 ucom_cfg_do_request(sc->sc_udev,
414 &sc->sc_ucom, &req, NULL, 0, 1000);
418 uchcom_ctrl_read(struct uchcom_softc *sc, uint8_t reqno,
419 uint16_t value, uint16_t index, void *buf, uint16_t buflen)
421 struct usb_device_request req;
423 req.bmRequestType = UT_READ_VENDOR_DEVICE;
424 req.bRequest = reqno;
425 USETW(req.wValue, value);
426 USETW(req.wIndex, index);
427 USETW(req.wLength, buflen);
429 ucom_cfg_do_request(sc->sc_udev,
430 &sc->sc_ucom, &req, buf, USB_SHORT_XFER_OK, 1000);
434 uchcom_write_reg(struct uchcom_softc *sc,
435 uint8_t reg1, uint8_t val1, uint8_t reg2, uint8_t val2)
437 DPRINTF("0x%02X<-0x%02X, 0x%02X<-0x%02X\n",
438 (unsigned)reg1, (unsigned)val1,
439 (unsigned)reg2, (unsigned)val2);
441 sc, UCHCOM_REQ_WRITE_REG,
442 reg1 | ((uint16_t)reg2 << 8), val1 | ((uint16_t)val2 << 8));
446 uchcom_read_reg(struct uchcom_softc *sc,
447 uint8_t reg1, uint8_t *rval1, uint8_t reg2, uint8_t *rval2)
449 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
452 sc, UCHCOM_REQ_READ_REG,
453 reg1 | ((uint16_t)reg2 << 8), 0, buf, sizeof(buf));
455 DPRINTF("0x%02X->0x%02X, 0x%02X->0x%02X\n",
456 (unsigned)reg1, (unsigned)buf[0],
457 (unsigned)reg2, (unsigned)buf[1]);
466 uchcom_get_version(struct uchcom_softc *sc, uint8_t *rver)
468 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
470 uchcom_ctrl_read(sc, UCHCOM_REQ_GET_VERSION, 0, 0, buf, sizeof(buf));
477 uchcom_get_status(struct uchcom_softc *sc, uint8_t *rval)
479 uchcom_read_reg(sc, UCHCOM_REG_STAT1, rval, UCHCOM_REG_STAT2, NULL);
483 uchcom_set_dtr_rts_10(struct uchcom_softc *sc, uint8_t val)
485 uchcom_write_reg(sc, UCHCOM_REG_STAT1, val, UCHCOM_REG_STAT1, val);
489 uchcom_set_dtr_rts_20(struct uchcom_softc *sc, uint8_t val)
491 uchcom_ctrl_write(sc, UCHCOM_REQ_SET_DTRRTS, val, 0);
495 /* ----------------------------------------------------------------------
500 uchcom_update_version(struct uchcom_softc *sc)
502 uchcom_get_version(sc, &sc->sc_version);
506 uchcom_convert_status(struct uchcom_softc *sc, uint8_t cur)
508 sc->sc_dtr = !(cur & UCHCOM_DTR_MASK);
509 sc->sc_rts = !(cur & UCHCOM_RTS_MASK);
512 sc->sc_msr = (cur << 4) | ((sc->sc_msr >> 4) ^ cur);
516 uchcom_update_status(struct uchcom_softc *sc)
520 uchcom_get_status(sc, &cur);
521 uchcom_convert_status(sc, cur);
526 uchcom_set_dtr_rts(struct uchcom_softc *sc)
531 val |= UCHCOM_DTR_MASK;
533 val |= UCHCOM_RTS_MASK;
535 if (sc->sc_version < UCHCOM_VER_20)
536 uchcom_set_dtr_rts_10(sc, ~val);
538 uchcom_set_dtr_rts_20(sc, ~val);
542 uchcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
544 struct uchcom_softc *sc = ucom->sc_parent;
548 uchcom_read_reg(sc, UCHCOM_REG_BREAK1, &brk1, UCHCOM_REG_BREAK2, &brk2);
550 /* on - clear bits */
551 brk1 &= ~UCHCOM_BRK1_MASK;
552 brk2 &= ~UCHCOM_BRK2_MASK;
555 brk1 |= UCHCOM_BRK1_MASK;
556 brk2 |= UCHCOM_BRK2_MASK;
558 uchcom_write_reg(sc, UCHCOM_REG_BREAK1, brk1, UCHCOM_REG_BREAK2, brk2);
562 uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate)
564 const struct uchcom_divider_record *rp;
571 for (i = 0; i != NUM_DIVIDERS; i++) {
572 if (dividers[i].dvr_high >= rate &&
573 dividers[i].dvr_low <= rate) {
581 dp->dv_prescaler = rp->dvr_divider.dv_prescaler;
582 if (rp->dvr_base_clock == UCHCOM_BASE_UNKNOWN)
583 dp->dv_div = rp->dvr_divider.dv_div;
585 div = rp->dvr_base_clock / rate;
586 rem = rp->dvr_base_clock % rate;
587 if (div == 0 || div >= 0xFF)
589 if ((rem << 1) >= rate)
591 dp->dv_div = (uint8_t)-div;
594 mod = (UCHCOM_BPS_MOD_BASE / rate) + UCHCOM_BPS_MOD_BASE_OFS;
595 mod = mod + (mod / 2);
597 dp->dv_mod = (mod + 0xFF) / 0x100;
603 uchcom_set_baudrate(struct uchcom_softc *sc, uint32_t rate)
605 struct uchcom_divider dv;
607 if (uchcom_calc_divider_settings(&dv, rate))
611 UCHCOM_REG_BPS_PRE, dv.dv_prescaler,
612 UCHCOM_REG_BPS_DIV, dv.dv_div);
614 UCHCOM_REG_BPS_MOD, dv.dv_mod,
615 UCHCOM_REG_BPS_PAD, 0);
618 /* ----------------------------------------------------------------------
622 uchcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
624 struct uchcom_softc *sc = ucom->sc_parent;
633 uchcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
635 struct uchcom_softc *sc = ucom->sc_parent;
637 DPRINTF("onoff = %d\n", onoff);
640 uchcom_set_dtr_rts(sc);
644 uchcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
646 struct uchcom_softc *sc = ucom->sc_parent;
648 DPRINTF("onoff = %d\n", onoff);
651 uchcom_set_dtr_rts(sc);
655 uchcom_cfg_open(struct ucom_softc *ucom)
657 struct uchcom_softc *sc = ucom->sc_parent;
661 uchcom_update_version(sc);
662 uchcom_update_status(sc);
666 uchcom_pre_param(struct ucom_softc *ucom, struct termios *t)
668 struct uchcom_divider dv;
670 switch (t->c_cflag & CSIZE) {
677 if (uchcom_calc_divider_settings(&dv, t->c_ospeed)) {
680 return (0); /* success */
684 uchcom_cfg_param(struct ucom_softc *ucom, struct termios *t)
686 struct uchcom_softc *sc = ucom->sc_parent;
688 uchcom_get_version(sc, 0);
689 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0, 0);
690 uchcom_set_baudrate(sc, t->c_ospeed);
691 uchcom_read_reg(sc, 0x18, 0, 0x25, 0);
692 uchcom_write_reg(sc, 0x18, 0x50, 0x25, 0x00);
693 uchcom_update_status(sc);
694 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0x501f, 0xd90a);
695 uchcom_set_baudrate(sc, t->c_ospeed);
696 uchcom_set_dtr_rts(sc);
697 uchcom_update_status(sc);
701 uchcom_start_read(struct ucom_softc *ucom)
703 struct uchcom_softc *sc = ucom->sc_parent;
705 /* start interrupt endpoint */
706 usbd_transfer_start(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
708 /* start read endpoint */
709 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
713 uchcom_stop_read(struct ucom_softc *ucom)
715 struct uchcom_softc *sc = ucom->sc_parent;
717 /* stop interrupt endpoint */
718 usbd_transfer_stop(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
720 /* stop read endpoint */
721 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
725 uchcom_start_write(struct ucom_softc *ucom)
727 struct uchcom_softc *sc = ucom->sc_parent;
729 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
733 uchcom_stop_write(struct ucom_softc *ucom)
735 struct uchcom_softc *sc = ucom->sc_parent;
737 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
740 /* ----------------------------------------------------------------------
741 * callback when the modem status is changed.
744 uchcom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
746 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
747 struct usb_page_cache *pc;
748 uint8_t buf[UCHCOM_INTR_LEAST];
751 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
753 switch (USB_GET_STATE(xfer)) {
754 case USB_ST_TRANSFERRED:
756 DPRINTF("actlen = %u\n", actlen);
758 if (actlen >= UCHCOM_INTR_LEAST) {
759 pc = usbd_xfer_get_frame(xfer, 0);
760 usbd_copy_out(pc, 0, buf, UCHCOM_INTR_LEAST);
762 DPRINTF("data = 0x%02X 0x%02X 0x%02X 0x%02X\n",
763 (unsigned)buf[0], (unsigned)buf[1],
764 (unsigned)buf[2], (unsigned)buf[3]);
766 uchcom_convert_status(sc, buf[UCHCOM_INTR_STAT1]);
767 ucom_status_change(&sc->sc_ucom);
771 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
772 usbd_transfer_submit(xfer);
776 if (error != USB_ERR_CANCELLED) {
777 /* try to clear stall first */
778 usbd_xfer_set_stall(xfer);
786 uchcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
788 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
789 struct usb_page_cache *pc;
792 switch (USB_GET_STATE(xfer)) {
794 case USB_ST_TRANSFERRED:
796 pc = usbd_xfer_get_frame(xfer, 0);
797 if (ucom_get_data(&sc->sc_ucom, pc, 0,
798 usbd_xfer_max_len(xfer), &actlen)) {
800 DPRINTF("actlen = %d\n", actlen);
802 usbd_xfer_set_frame_len(xfer, 0, actlen);
803 usbd_transfer_submit(xfer);
808 if (error != USB_ERR_CANCELLED) {
809 /* try to clear stall first */
810 usbd_xfer_set_stall(xfer);
818 uchcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
820 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
821 struct usb_page_cache *pc;
824 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
826 switch (USB_GET_STATE(xfer)) {
827 case USB_ST_TRANSFERRED:
830 pc = usbd_xfer_get_frame(xfer, 0);
831 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
836 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
837 usbd_transfer_submit(xfer);
841 if (error != USB_ERR_CANCELLED) {
842 /* try to clear stall first */
843 usbd_xfer_set_stall(xfer);
851 uchcom_poll(struct ucom_softc *ucom)
853 struct uchcom_softc *sc = ucom->sc_parent;
854 usbd_transfer_poll(sc->sc_xfer, UCHCOM_N_TRANSFER);
857 static device_method_t uchcom_methods[] = {
858 /* Device interface */
859 DEVMETHOD(device_probe, uchcom_probe),
860 DEVMETHOD(device_attach, uchcom_attach),
861 DEVMETHOD(device_detach, uchcom_detach),
865 static driver_t uchcom_driver = {
867 .methods = uchcom_methods,
868 .size = sizeof(struct uchcom_softc)
871 static devclass_t uchcom_devclass;
873 DRIVER_MODULE(uchcom, uhub, uchcom_driver, uchcom_devclass, NULL, 0);
874 MODULE_DEPEND(uchcom, ucom, 1, 1, 1);
875 MODULE_DEPEND(uchcom, usb, 1, 1, 1);
876 MODULE_VERSION(uchcom, 1);