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.
66 * Driver for WinChipHead CH341/340, the worst USB-serial chip in the
70 #include <sys/stdint.h>
71 #include <sys/param.h>
72 #include <sys/queue.h>
73 #include <sys/types.h>
74 #include <sys/systm.h>
75 #include <sys/kernel.h>
77 #include <sys/module.h>
79 #include <sys/condvar.h>
80 #include <sys/sysctl.h>
81 #include <sys/unistd.h>
82 #include <sys/callout.h>
83 #include <sys/malloc.h>
86 #include <bus/u4b/usb.h>
87 #include <bus/u4b/usbdi.h>
88 #include <bus/u4b/usbdi_util.h>
89 #include <bus/u4b/usbdevs.h>
91 #define USB_DEBUG_VAR uchcom_debug
92 #include <bus/u4b/usb_debug.h>
93 #include <bus/u4b/usb_process.h>
95 #include <bus/u4b/serial/usb_serial.h>
98 static int uchcom_debug = 0;
100 static SYSCTL_NODE(_hw_usb, OID_AUTO, uchcom, CTLFLAG_RW, 0, "USB uchcom");
101 SYSCTL_INT(_hw_usb_uchcom, OID_AUTO, debug, CTLFLAG_RW,
102 &uchcom_debug, 0, "uchcom debug level");
105 #define UCHCOM_IFACE_INDEX 0
106 #define UCHCOM_CONFIG_INDEX 0
108 #define UCHCOM_REV_CH340 0x0250
109 #define UCHCOM_INPUT_BUF_SIZE 8
111 #define UCHCOM_REQ_GET_VERSION 0x5F
112 #define UCHCOM_REQ_READ_REG 0x95
113 #define UCHCOM_REQ_WRITE_REG 0x9A
114 #define UCHCOM_REQ_RESET 0xA1
115 #define UCHCOM_REQ_SET_DTRRTS 0xA4
117 #define UCHCOM_REG_STAT1 0x06
118 #define UCHCOM_REG_STAT2 0x07
119 #define UCHCOM_REG_BPS_PRE 0x12
120 #define UCHCOM_REG_BPS_DIV 0x13
121 #define UCHCOM_REG_BPS_MOD 0x14
122 #define UCHCOM_REG_BPS_PAD 0x0F
123 #define UCHCOM_REG_BREAK1 0x05
124 #define UCHCOM_REG_BREAK2 0x18
125 #define UCHCOM_REG_LCR1 0x18
126 #define UCHCOM_REG_LCR2 0x25
128 #define UCHCOM_VER_20 0x20
130 #define UCHCOM_BASE_UNKNOWN 0
131 #define UCHCOM_BPS_MOD_BASE 20000000
132 #define UCHCOM_BPS_MOD_BASE_OFS 1100
134 #define UCHCOM_DTR_MASK 0x20
135 #define UCHCOM_RTS_MASK 0x40
137 #define UCHCOM_BRK1_MASK 0x01
138 #define UCHCOM_BRK2_MASK 0x40
140 #define UCHCOM_LCR1_MASK 0xAF
141 #define UCHCOM_LCR2_MASK 0x07
142 #define UCHCOM_LCR1_PARENB 0x80
143 #define UCHCOM_LCR2_PAREVEN 0x07
144 #define UCHCOM_LCR2_PARODD 0x06
145 #define UCHCOM_LCR2_PARMARK 0x05
146 #define UCHCOM_LCR2_PARSPACE 0x04
148 #define UCHCOM_INTR_STAT1 0x02
149 #define UCHCOM_INTR_STAT2 0x03
150 #define UCHCOM_INTR_LEAST 4
152 #define UCHCOM_BULK_BUF_SIZE 1024 /* bytes */
161 struct uchcom_softc {
162 struct ucom_super_softc sc_super_ucom;
163 struct ucom_softc sc_ucom;
165 struct usb_xfer *sc_xfer[UCHCOM_N_TRANSFER];
166 struct usb_device *sc_udev;
169 uint8_t sc_dtr; /* local copy */
170 uint8_t sc_rts; /* local copy */
173 uint8_t sc_lsr; /* local status register */
176 struct uchcom_divider {
177 uint8_t dv_prescaler;
182 struct uchcom_divider_record {
185 uint32_t dvr_base_clock;
186 struct uchcom_divider dvr_divider;
189 static const struct uchcom_divider_record dividers[] =
191 {307200, 307200, UCHCOM_BASE_UNKNOWN, {7, 0xD9, 0}},
192 {921600, 921600, UCHCOM_BASE_UNKNOWN, {7, 0xF3, 0}},
193 {2999999, 23530, 6000000, {3, 0, 0}},
194 {23529, 2942, 750000, {2, 0, 0}},
195 {2941, 368, 93750, {1, 0, 0}},
196 {367, 1, 11719, {0, 0, 0}},
199 #define NUM_DIVIDERS (sizeof (dividers) / sizeof (dividers[0]))
201 static const STRUCT_USB_HOST_ID uchcom_devs[] = {
202 {USB_VPI(USB_VENDOR_WCH, USB_PRODUCT_WCH_CH341SER, 0)},
203 {USB_VPI(USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341SER, 0)},
208 static int uchcom_pre_param(struct ucom_softc *, struct termios *);
209 static void uchcom_cfg_get_status(struct ucom_softc *, uint8_t *,
211 static void uchcom_cfg_open(struct ucom_softc *ucom);
212 static void uchcom_cfg_param(struct ucom_softc *, struct termios *);
213 static void uchcom_cfg_set_break(struct ucom_softc *, uint8_t);
214 static void uchcom_cfg_set_dtr(struct ucom_softc *, uint8_t);
215 static void uchcom_cfg_set_rts(struct ucom_softc *, uint8_t);
216 static void uchcom_start_read(struct ucom_softc *);
217 static void uchcom_start_write(struct ucom_softc *);
218 static void uchcom_stop_read(struct ucom_softc *);
219 static void uchcom_stop_write(struct ucom_softc *);
220 static void uchcom_update_version(struct uchcom_softc *);
221 static void uchcom_convert_status(struct uchcom_softc *, uint8_t);
222 static void uchcom_update_status(struct uchcom_softc *);
223 static void uchcom_set_dtr_rts(struct uchcom_softc *);
224 static int uchcom_calc_divider_settings(struct uchcom_divider *, uint32_t);
225 static void uchcom_set_baudrate(struct uchcom_softc *, uint32_t);
226 static void uchcom_poll(struct ucom_softc *ucom);
228 static device_probe_t uchcom_probe;
229 static device_attach_t uchcom_attach;
230 static device_detach_t uchcom_detach;
232 static usb_callback_t uchcom_intr_callback;
233 static usb_callback_t uchcom_write_callback;
234 static usb_callback_t uchcom_read_callback;
236 static const struct usb_config uchcom_config_data[UCHCOM_N_TRANSFER] = {
238 [UCHCOM_BULK_DT_WR] = {
240 .endpoint = UE_ADDR_ANY,
241 .direction = UE_DIR_OUT,
242 .bufsize = UCHCOM_BULK_BUF_SIZE,
243 .flags = {.pipe_bof = 1,.force_short_xfer = 1,},
244 .callback = &uchcom_write_callback,
247 [UCHCOM_BULK_DT_RD] = {
249 .endpoint = UE_ADDR_ANY,
250 .direction = UE_DIR_IN,
251 .bufsize = UCHCOM_BULK_BUF_SIZE,
252 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
253 .callback = &uchcom_read_callback,
256 [UCHCOM_INTR_DT_RD] = {
257 .type = UE_INTERRUPT,
258 .endpoint = UE_ADDR_ANY,
259 .direction = UE_DIR_IN,
260 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
261 .bufsize = 0, /* use wMaxPacketSize */
262 .callback = &uchcom_intr_callback,
266 static struct ucom_callback uchcom_callback = {
267 .ucom_cfg_get_status = &uchcom_cfg_get_status,
268 .ucom_cfg_set_dtr = &uchcom_cfg_set_dtr,
269 .ucom_cfg_set_rts = &uchcom_cfg_set_rts,
270 .ucom_cfg_set_break = &uchcom_cfg_set_break,
271 .ucom_cfg_open = &uchcom_cfg_open,
272 .ucom_cfg_param = &uchcom_cfg_param,
273 .ucom_pre_param = &uchcom_pre_param,
274 .ucom_start_read = &uchcom_start_read,
275 .ucom_stop_read = &uchcom_stop_read,
276 .ucom_start_write = &uchcom_start_write,
277 .ucom_stop_write = &uchcom_stop_write,
278 .ucom_poll = &uchcom_poll,
281 /* ----------------------------------------------------------------------
282 * driver entry points
286 uchcom_probe(device_t dev)
288 struct usb_attach_arg *uaa = device_get_ivars(dev);
292 if (uaa->usb_mode != USB_MODE_HOST) {
295 if (uaa->info.bConfigIndex != UCHCOM_CONFIG_INDEX) {
298 if (uaa->info.bIfaceIndex != UCHCOM_IFACE_INDEX) {
301 return (usbd_lookup_id_by_uaa(uchcom_devs, sizeof(uchcom_devs), uaa));
305 uchcom_attach(device_t dev)
307 struct uchcom_softc *sc = device_get_softc(dev);
308 struct usb_attach_arg *uaa = device_get_ivars(dev);
314 device_set_usb_desc(dev);
315 lockinit(&sc->sc_lock, "uchcom", 0, LK_CANRECURSE);
317 sc->sc_udev = uaa->device;
319 switch (uaa->info.bcdDevice) {
320 case UCHCOM_REV_CH340:
321 device_printf(dev, "CH340 detected\n");
324 device_printf(dev, "CH341 detected\n");
328 iface_index = UCHCOM_IFACE_INDEX;
329 error = usbd_transfer_setup(uaa->device,
330 &iface_index, sc->sc_xfer, uchcom_config_data,
331 UCHCOM_N_TRANSFER, sc, &sc->sc_lock);
334 DPRINTF("one or more missing USB endpoints, "
335 "error=%s\n", usbd_errstr(error));
339 /* clear stall at first run */
340 lockmgr(&sc->sc_lock, LK_EXCLUSIVE);
341 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
342 usbd_xfer_set_stall(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
343 lockmgr(&sc->sc_lock, LK_RELEASE);
345 error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
346 &uchcom_callback, &sc->sc_lock);
350 ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
360 uchcom_detach(device_t dev)
362 struct uchcom_softc *sc = device_get_softc(dev);
366 ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
367 usbd_transfer_unsetup(sc->sc_xfer, UCHCOM_N_TRANSFER);
368 lockuninit(&sc->sc_lock);
373 /* ----------------------------------------------------------------------
378 uchcom_ctrl_write(struct uchcom_softc *sc, uint8_t reqno,
379 uint16_t value, uint16_t index)
381 struct usb_device_request req;
383 req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
384 req.bRequest = reqno;
385 USETW(req.wValue, value);
386 USETW(req.wIndex, index);
387 USETW(req.wLength, 0);
389 ucom_cfg_do_request(sc->sc_udev,
390 &sc->sc_ucom, &req, NULL, 0, 1000);
394 uchcom_ctrl_read(struct uchcom_softc *sc, uint8_t reqno,
395 uint16_t value, uint16_t index, void *buf, uint16_t buflen)
397 struct usb_device_request req;
399 req.bmRequestType = UT_READ_VENDOR_DEVICE;
400 req.bRequest = reqno;
401 USETW(req.wValue, value);
402 USETW(req.wIndex, index);
403 USETW(req.wLength, buflen);
405 ucom_cfg_do_request(sc->sc_udev,
406 &sc->sc_ucom, &req, buf, USB_SHORT_XFER_OK, 1000);
410 uchcom_write_reg(struct uchcom_softc *sc,
411 uint8_t reg1, uint8_t val1, uint8_t reg2, uint8_t val2)
413 DPRINTF("0x%02X<-0x%02X, 0x%02X<-0x%02X\n",
414 (unsigned)reg1, (unsigned)val1,
415 (unsigned)reg2, (unsigned)val2);
417 sc, UCHCOM_REQ_WRITE_REG,
418 reg1 | ((uint16_t)reg2 << 8), val1 | ((uint16_t)val2 << 8));
422 uchcom_read_reg(struct uchcom_softc *sc,
423 uint8_t reg1, uint8_t *rval1, uint8_t reg2, uint8_t *rval2)
425 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
428 sc, UCHCOM_REQ_READ_REG,
429 reg1 | ((uint16_t)reg2 << 8), 0, buf, sizeof(buf));
431 DPRINTF("0x%02X->0x%02X, 0x%02X->0x%02X\n",
432 (unsigned)reg1, (unsigned)buf[0],
433 (unsigned)reg2, (unsigned)buf[1]);
442 uchcom_get_version(struct uchcom_softc *sc, uint8_t *rver)
444 uint8_t buf[UCHCOM_INPUT_BUF_SIZE];
446 uchcom_ctrl_read(sc, UCHCOM_REQ_GET_VERSION, 0, 0, buf, sizeof(buf));
453 uchcom_get_status(struct uchcom_softc *sc, uint8_t *rval)
455 uchcom_read_reg(sc, UCHCOM_REG_STAT1, rval, UCHCOM_REG_STAT2, NULL);
459 uchcom_set_dtr_rts_10(struct uchcom_softc *sc, uint8_t val)
461 uchcom_write_reg(sc, UCHCOM_REG_STAT1, val, UCHCOM_REG_STAT1, val);
465 uchcom_set_dtr_rts_20(struct uchcom_softc *sc, uint8_t val)
467 uchcom_ctrl_write(sc, UCHCOM_REQ_SET_DTRRTS, val, 0);
471 /* ----------------------------------------------------------------------
476 uchcom_update_version(struct uchcom_softc *sc)
478 uchcom_get_version(sc, &sc->sc_version);
482 uchcom_convert_status(struct uchcom_softc *sc, uint8_t cur)
484 sc->sc_dtr = !(cur & UCHCOM_DTR_MASK);
485 sc->sc_rts = !(cur & UCHCOM_RTS_MASK);
488 sc->sc_msr = (cur << 4) | ((sc->sc_msr >> 4) ^ cur);
492 uchcom_update_status(struct uchcom_softc *sc)
496 uchcom_get_status(sc, &cur);
497 uchcom_convert_status(sc, cur);
502 uchcom_set_dtr_rts(struct uchcom_softc *sc)
507 val |= UCHCOM_DTR_MASK;
509 val |= UCHCOM_RTS_MASK;
511 if (sc->sc_version < UCHCOM_VER_20)
512 uchcom_set_dtr_rts_10(sc, ~val);
514 uchcom_set_dtr_rts_20(sc, ~val);
518 uchcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
520 struct uchcom_softc *sc = ucom->sc_parent;
524 uchcom_read_reg(sc, UCHCOM_REG_BREAK1, &brk1, UCHCOM_REG_BREAK2, &brk2);
526 /* on - clear bits */
527 brk1 &= ~UCHCOM_BRK1_MASK;
528 brk2 &= ~UCHCOM_BRK2_MASK;
531 brk1 |= UCHCOM_BRK1_MASK;
532 brk2 |= UCHCOM_BRK2_MASK;
534 uchcom_write_reg(sc, UCHCOM_REG_BREAK1, brk1, UCHCOM_REG_BREAK2, brk2);
538 uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate)
540 const struct uchcom_divider_record *rp;
547 for (i = 0; i != NUM_DIVIDERS; i++) {
548 if (dividers[i].dvr_high >= rate &&
549 dividers[i].dvr_low <= rate) {
557 dp->dv_prescaler = rp->dvr_divider.dv_prescaler;
558 if (rp->dvr_base_clock == UCHCOM_BASE_UNKNOWN)
559 dp->dv_div = rp->dvr_divider.dv_div;
561 div = rp->dvr_base_clock / rate;
562 rem = rp->dvr_base_clock % rate;
563 if (div == 0 || div >= 0xFF)
565 if ((rem << 1) >= rate)
567 dp->dv_div = (uint8_t)-div;
570 mod = (UCHCOM_BPS_MOD_BASE / rate) + UCHCOM_BPS_MOD_BASE_OFS;
571 mod = mod + (mod / 2);
573 dp->dv_mod = (mod + 0xFF) / 0x100;
579 uchcom_set_baudrate(struct uchcom_softc *sc, uint32_t rate)
581 struct uchcom_divider dv;
583 if (uchcom_calc_divider_settings(&dv, rate))
587 UCHCOM_REG_BPS_PRE, dv.dv_prescaler,
588 UCHCOM_REG_BPS_DIV, dv.dv_div);
590 UCHCOM_REG_BPS_MOD, dv.dv_mod,
591 UCHCOM_REG_BPS_PAD, 0);
594 /* ----------------------------------------------------------------------
598 uchcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
600 struct uchcom_softc *sc = ucom->sc_parent;
609 uchcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
611 struct uchcom_softc *sc = ucom->sc_parent;
613 DPRINTF("onoff = %d\n", onoff);
616 uchcom_set_dtr_rts(sc);
620 uchcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
622 struct uchcom_softc *sc = ucom->sc_parent;
624 DPRINTF("onoff = %d\n", onoff);
627 uchcom_set_dtr_rts(sc);
631 uchcom_cfg_open(struct ucom_softc *ucom)
633 struct uchcom_softc *sc = ucom->sc_parent;
637 uchcom_update_version(sc);
638 uchcom_update_status(sc);
642 uchcom_pre_param(struct ucom_softc *ucom, struct termios *t)
644 struct uchcom_divider dv;
646 switch (t->c_cflag & CSIZE) {
653 if (uchcom_calc_divider_settings(&dv, t->c_ospeed)) {
656 return (0); /* success */
660 uchcom_cfg_param(struct ucom_softc *ucom, struct termios *t)
662 struct uchcom_softc *sc = ucom->sc_parent;
664 uchcom_get_version(sc, 0);
665 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0, 0);
666 uchcom_set_baudrate(sc, t->c_ospeed);
667 uchcom_read_reg(sc, 0x18, 0, 0x25, 0);
668 uchcom_write_reg(sc, 0x18, 0x50, 0x25, 0x00);
669 uchcom_update_status(sc);
670 uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0x501f, 0xd90a);
671 uchcom_set_baudrate(sc, t->c_ospeed);
672 uchcom_set_dtr_rts(sc);
673 uchcom_update_status(sc);
677 uchcom_start_read(struct ucom_softc *ucom)
679 struct uchcom_softc *sc = ucom->sc_parent;
681 /* start interrupt endpoint */
682 usbd_transfer_start(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
684 /* start read endpoint */
685 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
689 uchcom_stop_read(struct ucom_softc *ucom)
691 struct uchcom_softc *sc = ucom->sc_parent;
693 /* stop interrupt endpoint */
694 usbd_transfer_stop(sc->sc_xfer[UCHCOM_INTR_DT_RD]);
696 /* stop read endpoint */
697 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_RD]);
701 uchcom_start_write(struct ucom_softc *ucom)
703 struct uchcom_softc *sc = ucom->sc_parent;
705 usbd_transfer_start(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
709 uchcom_stop_write(struct ucom_softc *ucom)
711 struct uchcom_softc *sc = ucom->sc_parent;
713 usbd_transfer_stop(sc->sc_xfer[UCHCOM_BULK_DT_WR]);
716 /* ----------------------------------------------------------------------
717 * callback when the modem status is changed.
720 uchcom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
722 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
723 struct usb_page_cache *pc;
724 uint8_t buf[UCHCOM_INTR_LEAST];
727 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
729 switch (USB_GET_STATE(xfer)) {
730 case USB_ST_TRANSFERRED:
732 DPRINTF("actlen = %u\n", actlen);
734 if (actlen >= UCHCOM_INTR_LEAST) {
735 pc = usbd_xfer_get_frame(xfer, 0);
736 usbd_copy_out(pc, 0, buf, UCHCOM_INTR_LEAST);
738 DPRINTF("data = 0x%02X 0x%02X 0x%02X 0x%02X\n",
739 (unsigned)buf[0], (unsigned)buf[1],
740 (unsigned)buf[2], (unsigned)buf[3]);
742 uchcom_convert_status(sc, buf[UCHCOM_INTR_STAT1]);
743 ucom_status_change(&sc->sc_ucom);
747 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
748 usbd_transfer_submit(xfer);
752 if (error != USB_ERR_CANCELLED) {
753 /* try to clear stall first */
754 usbd_xfer_set_stall(xfer);
762 uchcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
764 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
765 struct usb_page_cache *pc;
768 switch (USB_GET_STATE(xfer)) {
770 case USB_ST_TRANSFERRED:
772 pc = usbd_xfer_get_frame(xfer, 0);
773 if (ucom_get_data(&sc->sc_ucom, pc, 0,
774 usbd_xfer_max_len(xfer), &actlen)) {
776 DPRINTF("actlen = %d\n", actlen);
778 usbd_xfer_set_frame_len(xfer, 0, actlen);
779 usbd_transfer_submit(xfer);
784 if (error != USB_ERR_CANCELLED) {
785 /* try to clear stall first */
786 usbd_xfer_set_stall(xfer);
794 uchcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
796 struct uchcom_softc *sc = usbd_xfer_softc(xfer);
797 struct usb_page_cache *pc;
800 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
802 switch (USB_GET_STATE(xfer)) {
803 case USB_ST_TRANSFERRED:
806 pc = usbd_xfer_get_frame(xfer, 0);
807 ucom_put_data(&sc->sc_ucom, pc, 0, actlen);
812 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
813 usbd_transfer_submit(xfer);
817 if (error != USB_ERR_CANCELLED) {
818 /* try to clear stall first */
819 usbd_xfer_set_stall(xfer);
827 uchcom_poll(struct ucom_softc *ucom)
829 struct uchcom_softc *sc = ucom->sc_parent;
830 usbd_transfer_poll(sc->sc_xfer, UCHCOM_N_TRANSFER);
833 static device_method_t uchcom_methods[] = {
834 /* Device interface */
835 DEVMETHOD(device_probe, uchcom_probe),
836 DEVMETHOD(device_attach, uchcom_attach),
837 DEVMETHOD(device_detach, uchcom_detach),
842 static driver_t uchcom_driver = {
845 sizeof(struct uchcom_softc)
848 static devclass_t uchcom_devclass;
850 DRIVER_MODULE(uchcom, uhub, uchcom_driver, uchcom_devclass, NULL, 0);
851 MODULE_DEPEND(uchcom, ucom, 1, 1, 1);
852 MODULE_DEPEND(uchcom, usb, 1, 1, 1);
853 MODULE_VERSION(uchcom, 1);