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 static 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)},
210 {USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER_2, 0)},
215 static void uchcom_free(struct ucom_softc *);
216 static int uchcom_pre_param(struct ucom_softc *, struct termios *);
217 static void uchcom_cfg_get_status(struct ucom_softc *, uint8_t *,
219 static void uchcom_cfg_open(struct ucom_softc *ucom);
220 static void uchcom_cfg_param(struct ucom_softc *, struct termios *);
221 static void uchcom_cfg_set_break(struct ucom_softc *, uint8_t);
222 static void uchcom_cfg_set_dtr(struct ucom_softc *, uint8_t);
223 static void uchcom_cfg_set_rts(struct ucom_softc *, uint8_t);
224 static void uchcom_start_read(struct ucom_softc *);
225 static void uchcom_start_write(struct ucom_softc *);
226 static void uchcom_stop_read(struct ucom_softc *);
227 static void uchcom_stop_write(struct ucom_softc *);
228 static void uchcom_update_version(struct uchcom_softc *);
229 static void uchcom_convert_status(struct uchcom_softc *, uint8_t);
230 static void uchcom_update_status(struct uchcom_softc *);
231 static void uchcom_set_dtr_rts(struct uchcom_softc *);
232 static int uchcom_calc_divider_settings(struct uchcom_divider *, uint32_t);
233 static void uchcom_set_baudrate(struct uchcom_softc *, uint32_t);
234 static void uchcom_poll(struct ucom_softc *ucom);
236 static device_probe_t uchcom_probe;
237 static device_attach_t uchcom_attach;
238 static device_detach_t uchcom_detach;
239 static void uchcom_free_softc(struct uchcom_softc *);
241 static usb_callback_t uchcom_intr_callback;
242 static usb_callback_t uchcom_write_callback;
243 static usb_callback_t uchcom_read_callback;
245 static const struct usb_config uchcom_config_data[UCHCOM_N_TRANSFER] = {
247 [UCHCOM_BULK_DT_WR] = {
249 .endpoint = UE_ADDR_ANY,
250 .direction = UE_DIR_OUT,
251 .bufsize = UCHCOM_BULK_BUF_SIZE,
252 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
253 .callback = &uchcom_write_callback,
256 [UCHCOM_BULK_DT_RD] = {
258 .endpoint = UE_ADDR_ANY,
259 .direction = UE_DIR_IN,
260 .bufsize = UCHCOM_BULK_BUF_SIZE,
261 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
262 .callback = &uchcom_read_callback,
265 [UCHCOM_INTR_DT_RD] = {
266 .type = UE_INTERRUPT,
267 .endpoint = UE_ADDR_ANY,
268 .direction = UE_DIR_IN,
269 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
270 .bufsize = 0, /* use wMaxPacketSize */
271 .callback = &uchcom_intr_callback,
275 static struct ucom_callback uchcom_callback = {
276 .ucom_cfg_get_status = &uchcom_cfg_get_status,
277 .ucom_cfg_set_dtr = &uchcom_cfg_set_dtr,
278 .ucom_cfg_set_rts = &uchcom_cfg_set_rts,
279 .ucom_cfg_set_break = &uchcom_cfg_set_break,
280 .ucom_cfg_open = &uchcom_cfg_open,
281 .ucom_cfg_param = &uchcom_cfg_param,
282 .ucom_pre_param = &uchcom_pre_param,
283 .ucom_start_read = &uchcom_start_read,
284 .ucom_stop_read = &uchcom_stop_read,
285 .ucom_start_write = &uchcom_start_write,
286 .ucom_stop_write = &uchcom_stop_write,
287 .ucom_poll = &uchcom_poll,
288 .ucom_free = &uchcom_free,
291 /* ----------------------------------------------------------------------
292 * driver entry points
296 uchcom_probe(device_t dev)
298 struct usb_attach_arg *uaa = device_get_ivars(dev);
302 if (uaa->usb_mode != USB_MODE_HOST) {
305 if (uaa->info.bConfigIndex != UCHCOM_CONFIG_INDEX) {
308 if (uaa->info.bIfaceIndex != UCHCOM_IFACE_INDEX) {
311 return (usbd_lookup_id_by_uaa(uchcom_devs, sizeof(uchcom_devs), uaa));
315 uchcom_attach(device_t dev)
317 struct uchcom_softc *sc = device_get_softc(dev);
318 struct usb_attach_arg *uaa = device_get_ivars(dev);
324 device_set_usb_desc(dev);
325 mtx_init(&sc->sc_mtx, "uchcom", NULL, MTX_DEF);
326 ucom_ref(&sc->sc_super_ucom);
328 sc->sc_udev = uaa->device;
330 switch (uaa->info.bcdDevice) {
331 case UCHCOM_REV_CH340:
332 device_printf(dev, "CH340 detected\n");
335 device_printf(dev, "CH341 detected\n");
339 iface_index = UCHCOM_IFACE_INDEX;
340 error = usbd_transfer_setup(uaa->device,
341 &iface_index, sc->sc_xfer, uchcom_config_data,
342 UCHCOM_N_TRANSFER, sc, &sc->sc_mtx);
345 DPRINTF("one or more missing USB endpoints, "
346 "error=%s\n", usbd_errstr(error));
350 /* clear stall at first run */
351 mtx_lock(&sc->sc_mtx);
352 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
353 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
354 mtx_unlock(&sc->sc_mtx);
356 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
357 &uchcom_callback, &sc->sc_mtx);
361 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
371 uchcom_detach(device_t dev)
373 struct uchcom_softc *sc = device_get_softc(dev);
377 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
378 usbd_transfer_unsetup(sc->sc_xfer, UCHCOM_N_TRANSFER);
380 device_claim_softc(dev);
382 uchcom_free_softc(sc);
387 UCOM_UNLOAD_DRAIN(uchcom);
390 uchcom_free_softc(struct uchcom_softc *sc)
392 if (ucom_unref(&sc->sc_super_ucom)) {
393 mtx_destroy(&sc->sc_mtx);
394 device_free_softc(sc);
399 uchcom_free(struct ucom_softc *ucom)
401 uchcom_free_softc(ucom->sc_parent);
404 /* ----------------------------------------------------------------------
409 uchcom_ctrl_write(struct uchcom_softc *sc, uint8_t reqno,
410 uint16_t value, uint16_t index)
412 struct usb_device_request req;
414 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
415 req.bRequest = reqno;
416 USETW(req.wValue, value);
417 USETW(req.wIndex, index);
418 USETW(req.wLength, 0);
420 ucom_cfg_do_request(sc->sc_udev,
421 &sc->sc_ucom, &req, NULL, 0, 1000);
425 uchcom_ctrl_read(struct uchcom_softc *sc, uint8_t reqno,
426 uint16_t value, uint16_t index, void *buf, uint16_t buflen)
428 struct usb_device_request req;
430 req.bmRequestType = UT_READ_VENDOR_DEVICE;
431 req.bRequest = reqno;
432 USETW(req.wValue, value);
433 USETW(req.wIndex, index);
434 USETW(req.wLength, buflen);
436 ucom_cfg_do_request(sc->sc_udev,
437 &sc->sc_ucom, &req, buf, USB_SHORT_XFER_OK, 1000);
441 uchcom_write_reg(struct uchcom_softc *sc,
442 uint8_t reg1, uint8_t val1, uint8_t reg2, uint8_t val2)
444 DPRINTF("0x%02X<-0x%02X, 0x%02X<-0x%02X\n",
445 (unsigned)reg1, (unsigned)val1,
446 (unsigned)reg2, (unsigned)val2);
448 sc, UCHCOM_REQ_WRITE_REG,
449 reg1 | ((uint16_t)reg2 << 8), val1 | ((uint16_t)val2 << 8));
453 uchcom_read_reg(struct uchcom_softc *sc,
454 uint8_t reg1, uint8_t *rval1, uint8_t reg2, uint8_t *rval2)
456 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
459 sc, UCHCOM_REQ_READ_REG,
460 reg1 | ((uint16_t)reg2 << 8), 0, buf, sizeof(buf));
462 DPRINTF("0x%02X->0x%02X, 0x%02X->0x%02X\n",
463 (unsigned)reg1, (unsigned)buf[0],
464 (unsigned)reg2, (unsigned)buf[1]);
473 uchcom_get_version(struct uchcom_softc *sc, uint8_t *rver)
475 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
477 uchcom_ctrl_read(sc, UCHCOM_REQ_GET_VERSION, 0, 0, buf, sizeof(buf));
484 uchcom_get_status(struct uchcom_softc *sc, uint8_t *rval)
486 uchcom_read_reg(sc, UCHCOM_REG_STAT1, rval, UCHCOM_REG_STAT2, NULL);
490 uchcom_set_dtr_rts_10(struct uchcom_softc *sc, uint8_t val)
492 uchcom_write_reg(sc, UCHCOM_REG_STAT1, val, UCHCOM_REG_STAT1, val);
496 uchcom_set_dtr_rts_20(struct uchcom_softc *sc, uint8_t val)
498 uchcom_ctrl_write(sc, UCHCOM_REQ_SET_DTRRTS, val, 0);
502 /* ----------------------------------------------------------------------
507 uchcom_update_version(struct uchcom_softc *sc)
509 uchcom_get_version(sc, &sc->sc_version);
513 uchcom_convert_status(struct uchcom_softc *sc, uint8_t cur)
515 sc->sc_dtr = !(cur & UCHCOM_DTR_MASK);
516 sc->sc_rts = !(cur & UCHCOM_RTS_MASK);
519 sc->sc_msr = (cur << 4) | ((sc->sc_msr >> 4) ^ cur);
523 uchcom_update_status(struct uchcom_softc *sc)
527 uchcom_get_status(sc, &cur);
528 uchcom_convert_status(sc, cur);
533 uchcom_set_dtr_rts(struct uchcom_softc *sc)
538 val |= UCHCOM_DTR_MASK;
540 val |= UCHCOM_RTS_MASK;
542 if (sc->sc_version < UCHCOM_VER_20)
543 uchcom_set_dtr_rts_10(sc, ~val);
545 uchcom_set_dtr_rts_20(sc, ~val);
549 uchcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
551 struct uchcom_softc *sc = ucom->sc_parent;
555 uchcom_read_reg(sc, UCHCOM_REG_BREAK1, &brk1, UCHCOM_REG_BREAK2, &brk2);
557 /* on - clear bits */
558 brk1 &= ~UCHCOM_BRK1_MASK;
559 brk2 &= ~UCHCOM_BRK2_MASK;
562 brk1 |= UCHCOM_BRK1_MASK;
563 brk2 |= UCHCOM_BRK2_MASK;
565 uchcom_write_reg(sc, UCHCOM_REG_BREAK1, brk1, UCHCOM_REG_BREAK2, brk2);
569 uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate)
571 const struct uchcom_divider_record *rp;
578 for (i = 0; i != NUM_DIVIDERS; i++) {
579 if (dividers[i].dvr_high >= rate &&
580 dividers[i].dvr_low <= rate) {
588 dp->dv_prescaler = rp->dvr_divider.dv_prescaler;
589 if (rp->dvr_base_clock == UCHCOM_BASE_UNKNOWN)
590 dp->dv_div = rp->dvr_divider.dv_div;
592 div = rp->dvr_base_clock / rate;
593 rem = rp->dvr_base_clock % rate;
594 if (div == 0 || div >= 0xFF)
596 if ((rem << 1) >= rate)
598 dp->dv_div = (uint8_t)-div;
601 mod = (UCHCOM_BPS_MOD_BASE / rate) + UCHCOM_BPS_MOD_BASE_OFS;
602 mod = mod + (mod / 2);
604 dp->dv_mod = (mod + 0xFF) / 0x100;
610 uchcom_set_baudrate(struct uchcom_softc *sc, uint32_t rate)
612 struct uchcom_divider dv;
614 if (uchcom_calc_divider_settings(&dv, rate))
618 UCHCOM_REG_BPS_PRE, dv.dv_prescaler,
619 UCHCOM_REG_BPS_DIV, dv.dv_div);
621 UCHCOM_REG_BPS_MOD, dv.dv_mod,
622 UCHCOM_REG_BPS_PAD, 0);
625 /* ----------------------------------------------------------------------
629 uchcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
631 struct uchcom_softc *sc = ucom->sc_parent;
640 uchcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
642 struct uchcom_softc *sc = ucom->sc_parent;
644 DPRINTF("onoff = %d\n", onoff);
647 uchcom_set_dtr_rts(sc);
651 uchcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
653 struct uchcom_softc *sc = ucom->sc_parent;
655 DPRINTF("onoff = %d\n", onoff);
658 uchcom_set_dtr_rts(sc);
662 uchcom_cfg_open(struct ucom_softc *ucom)
664 struct uchcom_softc *sc = ucom->sc_parent;
668 uchcom_update_version(sc);
669 uchcom_update_status(sc);
673 uchcom_pre_param(struct ucom_softc *ucom, struct termios *t)
675 struct uchcom_divider dv;
677 switch (t->c_cflag & CSIZE) {
684 if (uchcom_calc_divider_settings(&dv, t->c_ospeed)) {
687 return (0); /* success */
691 uchcom_cfg_param(struct ucom_softc *ucom, struct termios *t)
693 struct uchcom_softc *sc = ucom->sc_parent;
695 uchcom_get_version(sc, 0);
696 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0, 0);
697 uchcom_set_baudrate(sc, t->c_ospeed);
698 uchcom_read_reg(sc, 0x18, 0, 0x25, 0);
699 uchcom_write_reg(sc, 0x18, 0x50, 0x25, 0x00);
700 uchcom_update_status(sc);
701 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0x501f, 0xd90a);
702 uchcom_set_baudrate(sc, t->c_ospeed);
703 uchcom_set_dtr_rts(sc);
704 uchcom_update_status(sc);
708 uchcom_start_read(struct ucom_softc *ucom)
710 struct uchcom_softc *sc = ucom->sc_parent;
712 /* start interrupt endpoint */
713 usbd_transfer_start(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
715 /* start read endpoint */
716 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
720 uchcom_stop_read(struct ucom_softc *ucom)
722 struct uchcom_softc *sc = ucom->sc_parent;
724 /* stop interrupt endpoint */
725 usbd_transfer_stop(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
727 /* stop read endpoint */
728 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
732 uchcom_start_write(struct ucom_softc *ucom)
734 struct uchcom_softc *sc = ucom->sc_parent;
736 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
740 uchcom_stop_write(struct ucom_softc *ucom)
742 struct uchcom_softc *sc = ucom->sc_parent;
744 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
747 /* ----------------------------------------------------------------------
748 * callback when the modem status is changed.
751 uchcom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
753 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
754 struct usb_page_cache *pc;
755 uint8_t buf[UCHCOM_INTR_LEAST];
758 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
760 switch (USB_GET_STATE(xfer)) {
761 case USB_ST_TRANSFERRED:
763 DPRINTF("actlen = %u\n", actlen);
765 if (actlen >= UCHCOM_INTR_LEAST) {
766 pc = usbd_xfer_get_frame(xfer, 0);
767 usbd_copy_out(pc, 0, buf, UCHCOM_INTR_LEAST);
769 DPRINTF("data = 0x%02X 0x%02X 0x%02X 0x%02X\n",
770 (unsigned)buf[0], (unsigned)buf[1],
771 (unsigned)buf[2], (unsigned)buf[3]);
773 uchcom_convert_status(sc, buf[UCHCOM_INTR_STAT1]);
774 ucom_status_change(&sc->sc_ucom);
778 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
779 usbd_transfer_submit(xfer);
783 if (error != USB_ERR_CANCELLED) {
784 /* try to clear stall first */
785 usbd_xfer_set_stall(xfer);
793 uchcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
795 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
796 struct usb_page_cache *pc;
799 switch (USB_GET_STATE(xfer)) {
801 case USB_ST_TRANSFERRED:
803 pc = usbd_xfer_get_frame(xfer, 0);
804 if (ucom_get_data(&sc->sc_ucom, pc, 0,
805 usbd_xfer_max_len(xfer), &actlen)) {
807 DPRINTF("actlen = %d\n", actlen);
809 usbd_xfer_set_frame_len(xfer, 0, actlen);
810 usbd_transfer_submit(xfer);
815 if (error != USB_ERR_CANCELLED) {
816 /* try to clear stall first */
817 usbd_xfer_set_stall(xfer);
825 uchcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
827 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
828 struct usb_page_cache *pc;
831 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
833 switch (USB_GET_STATE(xfer)) {
834 case USB_ST_TRANSFERRED:
837 pc = usbd_xfer_get_frame(xfer, 0);
838 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
843 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
844 usbd_transfer_submit(xfer);
848 if (error != USB_ERR_CANCELLED) {
849 /* try to clear stall first */
850 usbd_xfer_set_stall(xfer);
858 uchcom_poll(struct ucom_softc *ucom)
860 struct uchcom_softc *sc = ucom->sc_parent;
861 usbd_transfer_poll(sc->sc_xfer, UCHCOM_N_TRANSFER);
864 static device_method_t uchcom_methods[] = {
865 /* Device interface */
866 DEVMETHOD(device_probe, uchcom_probe),
867 DEVMETHOD(device_attach, uchcom_attach),
868 DEVMETHOD(device_detach, uchcom_detach),
872 static driver_t uchcom_driver = {
874 .methods = uchcom_methods,
875 .size = sizeof(struct uchcom_softc)
878 static devclass_t uchcom_devclass;
880 DRIVER_MODULE(uchcom, uhub, uchcom_driver, uchcom_devclass, NULL, 0);
881 MODULE_DEPEND(uchcom, ucom, 1, 1, 1);
882 MODULE_DEPEND(uchcom, usb, 1, 1, 1);
883 MODULE_VERSION(uchcom, 1);