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
73 #include <sys/stdint.h>
74 #include <sys/stddef.h>
75 #include <sys/param.h>
76 #include <sys/queue.h>
77 #include <sys/types.h>
78 #include <sys/systm.h>
79 #include <sys/kernel.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_HOST_ID uchcom_devs[] = {
208 {USB_VPI(USB_VENDOR_WCH, USB_PRODUCT_WCH_CH341SER, 0)},
209 {USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER, 0)},
214 static int uchcom_pre_param(struct ucom_softc *, struct termios *);
215 static void uchcom_cfg_get_status(struct ucom_softc *, uint8_t *,
217 static void uchcom_cfg_open(struct ucom_softc *ucom);
218 static void uchcom_cfg_param(struct ucom_softc *, struct termios *);
219 static void uchcom_cfg_set_break(struct ucom_softc *, uint8_t);
220 static void uchcom_cfg_set_dtr(struct ucom_softc *, uint8_t);
221 static void uchcom_cfg_set_rts(struct ucom_softc *, uint8_t);
222 static void uchcom_start_read(struct ucom_softc *);
223 static void uchcom_start_write(struct ucom_softc *);
224 static void uchcom_stop_read(struct ucom_softc *);
225 static void uchcom_stop_write(struct ucom_softc *);
226 static void uchcom_update_version(struct uchcom_softc *);
227 static void uchcom_convert_status(struct uchcom_softc *, uint8_t);
228 static void uchcom_update_status(struct uchcom_softc *);
229 static void uchcom_set_dtr_rts(struct uchcom_softc *);
230 static int uchcom_calc_divider_settings(struct uchcom_divider *, uint32_t);
231 static void uchcom_set_baudrate(struct uchcom_softc *, uint32_t);
232 static void uchcom_poll(struct ucom_softc *ucom);
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_open = &uchcom_cfg_open,
278 .ucom_cfg_param = &uchcom_cfg_param,
279 .ucom_pre_param = &uchcom_pre_param,
280 .ucom_start_read = &uchcom_start_read,
281 .ucom_stop_read = &uchcom_stop_read,
282 .ucom_start_write = &uchcom_start_write,
283 .ucom_stop_write = &uchcom_stop_write,
284 .ucom_poll = &uchcom_poll,
287 /* ----------------------------------------------------------------------
288 * driver entry points
292 uchcom_probe(device_t dev)
294 struct usb_attach_arg *uaa = device_get_ivars(dev);
298 if (uaa->usb_mode != USB_MODE_HOST) {
301 if (uaa->info.bConfigIndex != UCHCOM_CONFIG_INDEX) {
304 if (uaa->info.bIfaceIndex != UCHCOM_IFACE_INDEX) {
307 return (usbd_lookup_id_by_uaa(uchcom_devs, sizeof(uchcom_devs), uaa));
311 uchcom_attach(device_t dev)
313 struct uchcom_softc *sc = device_get_softc(dev);
314 struct usb_attach_arg *uaa = device_get_ivars(dev);
320 device_set_usb_desc(dev);
321 mtx_init(&sc->sc_mtx, "uchcom", NULL, MTX_DEF);
323 sc->sc_udev = uaa->device;
325 switch (uaa->info.bcdDevice) {
326 case UCHCOM_REV_CH340:
327 device_printf(dev, "CH340 detected\n");
330 device_printf(dev, "CH341 detected\n");
334 iface_index = UCHCOM_IFACE_INDEX;
335 error = usbd_transfer_setup(uaa->device,
336 &iface_index, sc->sc_xfer, uchcom_config_data,
337 UCHCOM_N_TRANSFER, sc, &sc->sc_mtx);
340 DPRINTF("one or more missing USB endpoints, "
341 "error=%s\n", usbd_errstr(error));
345 /* clear stall at first run */
346 mtx_lock(&sc->sc_mtx);
347 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
348 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
349 mtx_unlock(&sc->sc_mtx);
351 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
352 &uchcom_callback, &sc->sc_mtx);
356 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
366 uchcom_detach(device_t dev)
368 struct uchcom_softc *sc = device_get_softc(dev);
372 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
373 usbd_transfer_unsetup(sc->sc_xfer, UCHCOM_N_TRANSFER);
374 mtx_destroy(&sc->sc_mtx);
379 /* ----------------------------------------------------------------------
384 uchcom_ctrl_write(struct uchcom_softc *sc, uint8_t reqno,
385 uint16_t value, uint16_t index)
387 struct usb_device_request req;
389 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
390 req.bRequest = reqno;
391 USETW(req.wValue, value);
392 USETW(req.wIndex, index);
393 USETW(req.wLength, 0);
395 ucom_cfg_do_request(sc->sc_udev,
396 &sc->sc_ucom, &req, NULL, 0, 1000);
400 uchcom_ctrl_read(struct uchcom_softc *sc, uint8_t reqno,
401 uint16_t value, uint16_t index, void *buf, uint16_t buflen)
403 struct usb_device_request req;
405 req.bmRequestType = UT_READ_VENDOR_DEVICE;
406 req.bRequest = reqno;
407 USETW(req.wValue, value);
408 USETW(req.wIndex, index);
409 USETW(req.wLength, buflen);
411 ucom_cfg_do_request(sc->sc_udev,
412 &sc->sc_ucom, &req, buf, USB_SHORT_XFER_OK, 1000);
416 uchcom_write_reg(struct uchcom_softc *sc,
417 uint8_t reg1, uint8_t val1, uint8_t reg2, uint8_t val2)
419 DPRINTF("0x%02X<-0x%02X, 0x%02X<-0x%02X\n",
420 (unsigned)reg1, (unsigned)val1,
421 (unsigned)reg2, (unsigned)val2);
423 sc, UCHCOM_REQ_WRITE_REG,
424 reg1 | ((uint16_t)reg2 << 8), val1 | ((uint16_t)val2 << 8));
428 uchcom_read_reg(struct uchcom_softc *sc,
429 uint8_t reg1, uint8_t *rval1, uint8_t reg2, uint8_t *rval2)
431 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
434 sc, UCHCOM_REQ_READ_REG,
435 reg1 | ((uint16_t)reg2 << 8), 0, buf, sizeof(buf));
437 DPRINTF("0x%02X->0x%02X, 0x%02X->0x%02X\n",
438 (unsigned)reg1, (unsigned)buf[0],
439 (unsigned)reg2, (unsigned)buf[1]);
448 uchcom_get_version(struct uchcom_softc *sc, uint8_t *rver)
450 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
452 uchcom_ctrl_read(sc, UCHCOM_REQ_GET_VERSION, 0, 0, buf, sizeof(buf));
459 uchcom_get_status(struct uchcom_softc *sc, uint8_t *rval)
461 uchcom_read_reg(sc, UCHCOM_REG_STAT1, rval, UCHCOM_REG_STAT2, NULL);
465 uchcom_set_dtr_rts_10(struct uchcom_softc *sc, uint8_t val)
467 uchcom_write_reg(sc, UCHCOM_REG_STAT1, val, UCHCOM_REG_STAT1, val);
471 uchcom_set_dtr_rts_20(struct uchcom_softc *sc, uint8_t val)
473 uchcom_ctrl_write(sc, UCHCOM_REQ_SET_DTRRTS, val, 0);
477 /* ----------------------------------------------------------------------
482 uchcom_update_version(struct uchcom_softc *sc)
484 uchcom_get_version(sc, &sc->sc_version);
488 uchcom_convert_status(struct uchcom_softc *sc, uint8_t cur)
490 sc->sc_dtr = !(cur & UCHCOM_DTR_MASK);
491 sc->sc_rts = !(cur & UCHCOM_RTS_MASK);
494 sc->sc_msr = (cur << 4) | ((sc->sc_msr >> 4) ^ cur);
498 uchcom_update_status(struct uchcom_softc *sc)
502 uchcom_get_status(sc, &cur);
503 uchcom_convert_status(sc, cur);
508 uchcom_set_dtr_rts(struct uchcom_softc *sc)
513 val |= UCHCOM_DTR_MASK;
515 val |= UCHCOM_RTS_MASK;
517 if (sc->sc_version < UCHCOM_VER_20)
518 uchcom_set_dtr_rts_10(sc, ~val);
520 uchcom_set_dtr_rts_20(sc, ~val);
524 uchcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
526 struct uchcom_softc *sc = ucom->sc_parent;
530 uchcom_read_reg(sc, UCHCOM_REG_BREAK1, &brk1, UCHCOM_REG_BREAK2, &brk2);
532 /* on - clear bits */
533 brk1 &= ~UCHCOM_BRK1_MASK;
534 brk2 &= ~UCHCOM_BRK2_MASK;
537 brk1 |= UCHCOM_BRK1_MASK;
538 brk2 |= UCHCOM_BRK2_MASK;
540 uchcom_write_reg(sc, UCHCOM_REG_BREAK1, brk1, UCHCOM_REG_BREAK2, brk2);
544 uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate)
546 const struct uchcom_divider_record *rp;
553 for (i = 0; i != NUM_DIVIDERS; i++) {
554 if (dividers[i].dvr_high >= rate &&
555 dividers[i].dvr_low <= rate) {
563 dp->dv_prescaler = rp->dvr_divider.dv_prescaler;
564 if (rp->dvr_base_clock == UCHCOM_BASE_UNKNOWN)
565 dp->dv_div = rp->dvr_divider.dv_div;
567 div = rp->dvr_base_clock / rate;
568 rem = rp->dvr_base_clock % rate;
569 if (div == 0 || div >= 0xFF)
571 if ((rem << 1) >= rate)
573 dp->dv_div = (uint8_t)-div;
576 mod = (UCHCOM_BPS_MOD_BASE / rate) + UCHCOM_BPS_MOD_BASE_OFS;
577 mod = mod + (mod / 2);
579 dp->dv_mod = (mod + 0xFF) / 0x100;
585 uchcom_set_baudrate(struct uchcom_softc *sc, uint32_t rate)
587 struct uchcom_divider dv;
589 if (uchcom_calc_divider_settings(&dv, rate))
593 UCHCOM_REG_BPS_PRE, dv.dv_prescaler,
594 UCHCOM_REG_BPS_DIV, dv.dv_div);
596 UCHCOM_REG_BPS_MOD, dv.dv_mod,
597 UCHCOM_REG_BPS_PAD, 0);
600 /* ----------------------------------------------------------------------
604 uchcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
606 struct uchcom_softc *sc = ucom->sc_parent;
615 uchcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
617 struct uchcom_softc *sc = ucom->sc_parent;
619 DPRINTF("onoff = %d\n", onoff);
622 uchcom_set_dtr_rts(sc);
626 uchcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
628 struct uchcom_softc *sc = ucom->sc_parent;
630 DPRINTF("onoff = %d\n", onoff);
633 uchcom_set_dtr_rts(sc);
637 uchcom_cfg_open(struct ucom_softc *ucom)
639 struct uchcom_softc *sc = ucom->sc_parent;
643 uchcom_update_version(sc);
644 uchcom_update_status(sc);
648 uchcom_pre_param(struct ucom_softc *ucom, struct termios *t)
650 struct uchcom_divider dv;
652 switch (t->c_cflag & CSIZE) {
659 if (uchcom_calc_divider_settings(&dv, t->c_ospeed)) {
662 return (0); /* success */
666 uchcom_cfg_param(struct ucom_softc *ucom, struct termios *t)
668 struct uchcom_softc *sc = ucom->sc_parent;
670 uchcom_get_version(sc, 0);
671 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0, 0);
672 uchcom_set_baudrate(sc, t->c_ospeed);
673 uchcom_read_reg(sc, 0x18, 0, 0x25, 0);
674 uchcom_write_reg(sc, 0x18, 0x50, 0x25, 0x00);
675 uchcom_update_status(sc);
676 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0x501f, 0xd90a);
677 uchcom_set_baudrate(sc, t->c_ospeed);
678 uchcom_set_dtr_rts(sc);
679 uchcom_update_status(sc);
683 uchcom_start_read(struct ucom_softc *ucom)
685 struct uchcom_softc *sc = ucom->sc_parent;
687 /* start interrupt endpoint */
688 usbd_transfer_start(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
690 /* start read endpoint */
691 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
695 uchcom_stop_read(struct ucom_softc *ucom)
697 struct uchcom_softc *sc = ucom->sc_parent;
699 /* stop interrupt endpoint */
700 usbd_transfer_stop(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
702 /* stop read endpoint */
703 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
707 uchcom_start_write(struct ucom_softc *ucom)
709 struct uchcom_softc *sc = ucom->sc_parent;
711 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
715 uchcom_stop_write(struct ucom_softc *ucom)
717 struct uchcom_softc *sc = ucom->sc_parent;
719 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
722 /* ----------------------------------------------------------------------
723 * callback when the modem status is changed.
726 uchcom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
728 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
729 struct usb_page_cache *pc;
730 uint8_t buf[UCHCOM_INTR_LEAST];
733 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
735 switch (USB_GET_STATE(xfer)) {
736 case USB_ST_TRANSFERRED:
738 DPRINTF("actlen = %u\n", actlen);
740 if (actlen >= UCHCOM_INTR_LEAST) {
741 pc = usbd_xfer_get_frame(xfer, 0);
742 usbd_copy_out(pc, 0, buf, UCHCOM_INTR_LEAST);
744 DPRINTF("data = 0x%02X 0x%02X 0x%02X 0x%02X\n",
745 (unsigned)buf[0], (unsigned)buf[1],
746 (unsigned)buf[2], (unsigned)buf[3]);
748 uchcom_convert_status(sc, buf[UCHCOM_INTR_STAT1]);
749 ucom_status_change(&sc->sc_ucom);
753 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
754 usbd_transfer_submit(xfer);
758 if (error != USB_ERR_CANCELLED) {
759 /* try to clear stall first */
760 usbd_xfer_set_stall(xfer);
768 uchcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
770 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
771 struct usb_page_cache *pc;
774 switch (USB_GET_STATE(xfer)) {
776 case USB_ST_TRANSFERRED:
778 pc = usbd_xfer_get_frame(xfer, 0);
779 if (ucom_get_data(&sc->sc_ucom, pc, 0,
780 usbd_xfer_max_len(xfer), &actlen)) {
782 DPRINTF("actlen = %d\n", actlen);
784 usbd_xfer_set_frame_len(xfer, 0, actlen);
785 usbd_transfer_submit(xfer);
790 if (error != USB_ERR_CANCELLED) {
791 /* try to clear stall first */
792 usbd_xfer_set_stall(xfer);
800 uchcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
802 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
803 struct usb_page_cache *pc;
806 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
808 switch (USB_GET_STATE(xfer)) {
809 case USB_ST_TRANSFERRED:
812 pc = usbd_xfer_get_frame(xfer, 0);
813 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
818 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
819 usbd_transfer_submit(xfer);
823 if (error != USB_ERR_CANCELLED) {
824 /* try to clear stall first */
825 usbd_xfer_set_stall(xfer);
833 uchcom_poll(struct ucom_softc *ucom)
835 struct uchcom_softc *sc = ucom->sc_parent;
836 usbd_transfer_poll(sc->sc_xfer, UCHCOM_N_TRANSFER);
839 static device_method_t uchcom_methods[] = {
840 /* Device interface */
841 DEVMETHOD(device_probe, uchcom_probe),
842 DEVMETHOD(device_attach, uchcom_attach),
843 DEVMETHOD(device_detach, uchcom_detach),
848 static driver_t uchcom_driver = {
851 sizeof(struct uchcom_softc)
854 static devclass_t uchcom_devclass;
856 DRIVER_MODULE(uchcom, uhub, uchcom_driver, uchcom_devclass, NULL, 0);
857 MODULE_DEPEND(uchcom, ucom, 1, 1, 1);
858 MODULE_DEPEND(uchcom, usb, 1, 1, 1);
859 MODULE_VERSION(uchcom, 1);