/* $OpenBSD: uchcom.c,v 1.28 2020/07/31 10:49:33 mglocker Exp $ */ /* $NetBSD: uchcom.c,v 1.1 2007/09/03 17:57:37 tshiozak Exp $ */ /* * Copyright (c) 2007 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Takuya SHIOZAKI (tshiozak@netbsd.org). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * driver for WinChipHead CH341/340, the worst USB-serial chip in the world. */ #include #include #include #include #include #include #include #include #include #include #include #ifdef UCHCOM_DEBUG #define DPRINTFN(n, x) do { if (uchcomdebug > (n)) printf x; } while (0) int uchcomdebug = 0; #else #define DPRINTFN(n, x) #endif #define DPRINTF(x) DPRINTFN(0, x) #define UCHCOM_IFACE_INDEX 0 #define UCHCOM_REV_CH340 0x0250 #define UCHCOM_INPUT_BUF_SIZE 8 #define UCHCOM_REQ_GET_VERSION 0x5F #define UCHCOM_REQ_READ_REG 0x95 #define UCHCOM_REQ_WRITE_REG 0x9A #define UCHCOM_REQ_RESET 0xA1 #define UCHCOM_REQ_SET_DTRRTS 0xA4 #define UCHCOM_REG_STAT1 0x06 #define UCHCOM_REG_STAT2 0x07 #define UCHCOM_REG_BPS_PRE 0x12 #define UCHCOM_REG_BPS_DIV 0x13 #define UCHCOM_REG_BPS_MOD 0x14 #define UCHCOM_REG_BPS_PAD 0x0F #define UCHCOM_REG_BREAK1 0x05 #define UCHCOM_REG_BREAK2 0x18 #define UCHCOM_REG_LCR1 0x18 #define UCHCOM_REG_LCR2 0x25 #define UCHCOM_VER_20 0x20 #define UCHCOM_BASE_UNKNOWN 0 #define UCHCOM_BPS_MOD_BASE 20000000 #define UCHCOM_BPS_MOD_BASE_OFS 1100 #define UCHCOM_DTR_MASK 0x20 #define UCHCOM_RTS_MASK 0x40 #define UCHCOM_BRK1_MASK 0x01 #define UCHCOM_BRK2_MASK 0x40 #define UCHCOM_INTR_STAT1 0x02 #define UCHCOM_INTR_STAT2 0x03 #define UCHCOM_INTR_LEAST 4 /* * XXX - these magic numbers come from Linux (drivers/usb/serial/ch341.c). * The manufacturer was unresponsive when asked for documentation. */ #define UCHCOM_RESET_VALUE 0x501F /* line mode? */ #define UCHCOM_RESET_INDEX 0xD90A /* baud rate? */ #define UCHCOMIBUFSIZE 256 #define UCHCOMOBUFSIZE 256 struct uchcom_softc { struct device sc_dev; struct usbd_device *sc_udev; struct device *sc_subdev; struct usbd_interface *sc_iface; /* */ int sc_intr_endpoint; struct usbd_pipe *sc_intr_pipe; u_char *sc_intr_buf; int sc_isize; /* */ uint8_t sc_version; int sc_dtr; int sc_rts; u_char sc_lsr; u_char sc_msr; int sc_lcr1; int sc_lcr2; }; struct uchcom_endpoints { int ep_bulkin; int ep_bulkout; int ep_intr; int ep_intr_size; }; struct uchcom_divider { uint8_t dv_prescaler; uint8_t dv_div; uint8_t dv_mod; }; struct uchcom_divider_record { uint32_t dvr_high; uint32_t dvr_low; uint32_t dvr_base_clock; struct uchcom_divider dvr_divider; }; static const struct uchcom_divider_record dividers[] = { { 307200, 307200, UCHCOM_BASE_UNKNOWN, { 7, 0xD9, 0 } }, { 921600, 921600, UCHCOM_BASE_UNKNOWN, { 7, 0xF3, 0 } }, { 2999999, 23530, 6000000, { 3, 0, 0 } }, { 23529, 2942, 750000, { 2, 0, 0 } }, { 2941, 368, 93750, { 1, 0, 0 } }, { 367, 1, 11719, { 0, 0, 0 } }, }; void uchcom_get_status(void *, int, u_char *, u_char *); void uchcom_set(void *, int, int, int); int uchcom_param(void *, int, struct termios *); int uchcom_open(void *, int); void uchcom_close(void *, int); void uchcom_intr(struct usbd_xfer *, void *, usbd_status); int uchcom_find_ifaces(struct uchcom_softc *, struct usbd_interface **); int uchcom_find_endpoints(struct uchcom_softc *, struct uchcom_endpoints *); void uchcom_close_intr_pipe(struct uchcom_softc *); usbd_status uchcom_generic_control_out(struct uchcom_softc *sc, uint8_t reqno, uint16_t value, uint16_t index); usbd_status uchcom_generic_control_in(struct uchcom_softc *, uint8_t, uint16_t, uint16_t, void *, int, int *); usbd_status uchcom_write_reg(struct uchcom_softc *, uint8_t, uint8_t, uint8_t, uint8_t); usbd_status uchcom_read_reg(struct uchcom_softc *, uint8_t, uint8_t *, uint8_t, uint8_t *); usbd_status uchcom_get_version(struct uchcom_softc *, uint8_t *); usbd_status uchcom_read_status(struct uchcom_softc *, uint8_t *); usbd_status uchcom_set_dtrrts_10(struct uchcom_softc *, uint8_t); usbd_status uchcom_set_dtrrts_20(struct uchcom_softc *, uint8_t); int uchcom_update_version(struct uchcom_softc *); void uchcom_convert_status(struct uchcom_softc *, uint8_t); int uchcom_update_status(struct uchcom_softc *); int uchcom_set_dtrrts(struct uchcom_softc *, int, int); int uchcom_set_break(struct uchcom_softc *, int); int uchcom_calc_divider_settings(struct uchcom_divider *, uint32_t); int uchcom_set_dte_rate(struct uchcom_softc *, uint32_t); int uchcom_set_line_control(struct uchcom_softc *, tcflag_t); int uchcom_clear_chip(struct uchcom_softc *); int uchcom_reset_chip(struct uchcom_softc *); int uchcom_setup_comm(struct uchcom_softc *); int uchcom_setup_intr_pipe(struct uchcom_softc *); int uchcom_match(struct device *, void *, void *); void uchcom_attach(struct device *, struct device *, void *); int uchcom_detach(struct device *, int); struct ucom_methods uchcom_methods = { uchcom_get_status, uchcom_set, uchcom_param, NULL, uchcom_open, uchcom_close, NULL, NULL, }; static const struct usb_devno uchcom_devs[] = { { USB_VENDOR_WCH, USB_PRODUCT_WCH_CH341 }, { USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH340 }, { USB_VENDOR_WCH2, USB_PRODUCT_WCH2_CH341A } }; struct cfdriver uchcom_cd = { NULL, "uchcom", DV_DULL }; const struct cfattach uchcom_ca = { sizeof(struct uchcom_softc), uchcom_match, uchcom_attach, uchcom_detach }; /* ---------------------------------------------------------------------- * driver entry points */ int uchcom_match(struct device *parent, void *match, void *aux) { struct usb_attach_arg *uaa = aux; if (uaa->iface == NULL) return UMATCH_NONE; return (usb_lookup(uchcom_devs, uaa->vendor, uaa->product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE); } void uchcom_attach(struct device *parent, struct device *self, void *aux) { struct uchcom_softc *sc = (struct uchcom_softc *)self; struct usb_attach_arg *uaa = aux; struct ucom_attach_args uca; struct usbd_device *dev = uaa->device; struct uchcom_endpoints endpoints; sc->sc_udev = dev; sc->sc_dtr = sc->sc_rts = -1; DPRINTF(("\n\nuchcom attach: sc=%p\n", sc)); switch (uaa->release) { case UCHCOM_REV_CH340: printf("%s: CH340\n", sc->sc_dev.dv_xname); break; default: printf("%s: CH341\n", sc->sc_dev.dv_xname); break; } if (uchcom_find_ifaces(sc, &sc->sc_iface)) goto failed; if (uchcom_find_endpoints(sc, &endpoints)) goto failed; sc->sc_intr_endpoint = endpoints.ep_intr; sc->sc_isize = endpoints.ep_intr_size; /* setup ucom layer */ uca.portno = UCOM_UNK_PORTNO; uca.bulkin = endpoints.ep_bulkin; uca.bulkout = endpoints.ep_bulkout; uca.ibufsize = UCHCOMIBUFSIZE; uca.obufsize = UCHCOMOBUFSIZE; uca.ibufsizepad = UCHCOMIBUFSIZE; uca.opkthdrlen = 0; uca.device = dev; uca.iface = sc->sc_iface; uca.methods = &uchcom_methods; uca.arg = sc; uca.info = NULL; sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); return; failed: usbd_deactivate(sc->sc_udev); } int uchcom_detach(struct device *self, int flags) { struct uchcom_softc *sc = (struct uchcom_softc *)self; int rv = 0; DPRINTF(("uchcom_detach: sc=%p flags=%d\n", sc, flags)); uchcom_close_intr_pipe(sc); if (sc->sc_subdev != NULL) { rv = config_detach(sc->sc_subdev, flags); sc->sc_subdev = NULL; } return rv; } int uchcom_find_ifaces(struct uchcom_softc *sc, struct usbd_interface **riface) { usbd_status err; err = usbd_device2interface_handle(sc->sc_udev, UCHCOM_IFACE_INDEX, riface); if (err) { printf("\n%s: failed to get interface: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return -1; } return 0; } int uchcom_find_endpoints(struct uchcom_softc *sc, struct uchcom_endpoints *endpoints) { int i, bin=-1, bout=-1, intr=-1, isize=0; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; id = usbd_get_interface_descriptor(sc->sc_iface); for (i = 0; i < id->bNumEndpoints; i++) { ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); if (ed == NULL) { printf("%s: no endpoint descriptor for %d\n", sc->sc_dev.dv_xname, i); return -1; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { intr = ed->bEndpointAddress; isize = UGETW(ed->wMaxPacketSize); } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { bin = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { bout = ed->bEndpointAddress; } } if (intr == -1 || bin == -1 || bout == -1) { if (intr == -1) { printf("%s: no interrupt end point\n", sc->sc_dev.dv_xname); } if (bin == -1) { printf("%s: no data bulk in end point\n", sc->sc_dev.dv_xname); } if (bout == -1) { printf("%s: no data bulk out end point\n", sc->sc_dev.dv_xname); } return -1; } if (isize < UCHCOM_INTR_LEAST) { printf("%s: intr pipe is too short", sc->sc_dev.dv_xname); return -1; } DPRINTF(("%s: bulkin=%d, bulkout=%d, intr=%d, isize=%d\n", sc->sc_dev.dv_xname, bin, bout, intr, isize)); endpoints->ep_intr = intr; endpoints->ep_intr_size = isize; endpoints->ep_bulkin = bin; endpoints->ep_bulkout = bout; return 0; } /* ---------------------------------------------------------------------- * low level i/o */ usbd_status uchcom_generic_control_out(struct uchcom_softc *sc, uint8_t reqno, uint16_t value, uint16_t index) { usb_device_request_t req; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = reqno; USETW(req.wValue, value); USETW(req.wIndex, index); USETW(req.wLength, 0); return usbd_do_request(sc->sc_udev, &req, 0); } usbd_status uchcom_generic_control_in(struct uchcom_softc *sc, uint8_t reqno, uint16_t value, uint16_t index, void *buf, int buflen, int *actlen) { usb_device_request_t req; req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = reqno; USETW(req.wValue, value); USETW(req.wIndex, index); USETW(req.wLength, (uint16_t)buflen); return usbd_do_request_flags(sc->sc_udev, &req, buf, USBD_SHORT_XFER_OK, actlen, USBD_DEFAULT_TIMEOUT); } usbd_status uchcom_write_reg(struct uchcom_softc *sc, uint8_t reg1, uint8_t val1, uint8_t reg2, uint8_t val2) { DPRINTF(("uchcom: write reg 0x%02X<-0x%02X, 0x%02X<-0x%02X\n", (unsigned)reg1, (unsigned)val1, (unsigned)reg2, (unsigned)val2)); return uchcom_generic_control_out( sc, UCHCOM_REQ_WRITE_REG, reg1|((uint16_t)reg2<<8), val1|((uint16_t)val2<<8)); } usbd_status uchcom_read_reg(struct uchcom_softc *sc, uint8_t reg1, uint8_t *rval1, uint8_t reg2, uint8_t *rval2) { uint8_t buf[UCHCOM_INPUT_BUF_SIZE]; usbd_status err; int actin; err = uchcom_generic_control_in( sc, UCHCOM_REQ_READ_REG, reg1|((uint16_t)reg2<<8), 0, buf, sizeof buf, &actin); if (err) return err; DPRINTF(("uchcom: read reg 0x%02X->0x%02X, 0x%02X->0x%02X\n", (unsigned)reg1, (unsigned)buf[0], (unsigned)reg2, (unsigned)buf[1])); if (rval1) *rval1 = buf[0]; if (rval2) *rval2 = buf[1]; return USBD_NORMAL_COMPLETION; } usbd_status uchcom_get_version(struct uchcom_softc *sc, uint8_t *rver) { uint8_t buf[UCHCOM_INPUT_BUF_SIZE]; usbd_status err; int actin; err = uchcom_generic_control_in( sc, UCHCOM_REQ_GET_VERSION, 0, 0, buf, sizeof buf, &actin); if (err) return err; if (rver) *rver = buf[0]; return USBD_NORMAL_COMPLETION; } usbd_status uchcom_read_status(struct uchcom_softc *sc, uint8_t *rval) { return uchcom_read_reg(sc, UCHCOM_REG_STAT1, rval, UCHCOM_REG_STAT2, NULL); } usbd_status uchcom_set_dtrrts_10(struct uchcom_softc *sc, uint8_t val) { return uchcom_write_reg(sc, UCHCOM_REG_STAT1, val, UCHCOM_REG_STAT1, val); } usbd_status uchcom_set_dtrrts_20(struct uchcom_softc *sc, uint8_t val) { return uchcom_generic_control_out(sc, UCHCOM_REQ_SET_DTRRTS, val, 0); } /* ---------------------------------------------------------------------- * middle layer */ int uchcom_update_version(struct uchcom_softc *sc) { usbd_status err; err = uchcom_get_version(sc, &sc->sc_version); if (err) { printf("%s: cannot get version: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return EIO; } return 0; } void uchcom_convert_status(struct uchcom_softc *sc, uint8_t cur) { sc->sc_dtr = !(cur & UCHCOM_DTR_MASK); sc->sc_rts = !(cur & UCHCOM_RTS_MASK); cur = ~cur & 0x0F; sc->sc_msr = (cur << 4) | ((sc->sc_msr >> 4) ^ cur); } int uchcom_update_status(struct uchcom_softc *sc) { usbd_status err; uint8_t cur; err = uchcom_read_status(sc, &cur); if (err) { printf("%s: cannot update status: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return EIO; } uchcom_convert_status(sc, cur); return 0; } int uchcom_set_dtrrts(struct uchcom_softc *sc, int dtr, int rts) { usbd_status err; uint8_t val = 0; if (dtr) val |= UCHCOM_DTR_MASK; if (rts) val |= UCHCOM_RTS_MASK; if (sc->sc_version < UCHCOM_VER_20) err = uchcom_set_dtrrts_10(sc, ~val); else err = uchcom_set_dtrrts_20(sc, ~val); if (err) { printf("%s: cannot set DTR/RTS: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return EIO; } return 0; } int uchcom_set_break(struct uchcom_softc *sc, int onoff) { usbd_status err; uint8_t brk1, brk2; err = uchcom_read_reg(sc, UCHCOM_REG_BREAK1, &brk1, UCHCOM_REG_BREAK2, &brk2); if (err) return EIO; if (onoff) { /* on - clear bits */ brk1 &= ~UCHCOM_BRK1_MASK; brk2 &= ~UCHCOM_BRK2_MASK; } else { /* off - set bits */ brk1 |= UCHCOM_BRK1_MASK; brk2 |= UCHCOM_BRK2_MASK; } err = uchcom_write_reg(sc, UCHCOM_REG_BREAK1, brk1, UCHCOM_REG_BREAK2, brk2); if (err) return EIO; return 0; } int uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate) { int i; const struct uchcom_divider_record *rp; uint32_t div, rem, mod; /* find record */ for (i=0; i= rate && dividers[i].dvr_low <= rate) { rp = ÷rs[i]; goto found; } } return -1; found: dp->dv_prescaler = rp->dvr_divider.dv_prescaler; if (rp->dvr_base_clock == UCHCOM_BASE_UNKNOWN) dp->dv_div = rp->dvr_divider.dv_div; else { div = rp->dvr_base_clock / rate; rem = rp->dvr_base_clock % rate; if (div==0 || div>=0xFF) return -1; if ((rem<<1) >= rate) div += 1; dp->dv_div = (uint8_t)-div; } mod = UCHCOM_BPS_MOD_BASE/rate + UCHCOM_BPS_MOD_BASE_OFS; mod = mod + mod/2; dp->dv_mod = mod / 0x100; return 0; } int uchcom_set_dte_rate(struct uchcom_softc *sc, uint32_t rate) { usbd_status err; struct uchcom_divider dv; if (uchcom_calc_divider_settings(&dv, rate)) return EINVAL; if ((err = uchcom_write_reg(sc, UCHCOM_REG_BPS_PRE, dv.dv_prescaler, UCHCOM_REG_BPS_DIV, dv.dv_div)) || (err = uchcom_write_reg(sc, UCHCOM_REG_BPS_MOD, dv.dv_mod, UCHCOM_REG_BPS_PAD, 0))) { printf("%s: cannot set DTE rate: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return EIO; } return 0; } int uchcom_set_line_control(struct uchcom_softc *sc, tcflag_t cflag) { /* * XXX: it is difficult to handle the line control appropriately: * work as chip default - CS8, no parity, !CSTOPB * other modes are not supported. */ switch (ISSET(cflag, CSIZE)) { case CS5: case CS6: case CS7: return EINVAL; case CS8: break; } if (ISSET(cflag, PARENB) || ISSET(cflag, CSTOPB)) return EINVAL; return 0; } int uchcom_clear_chip(struct uchcom_softc *sc) { usbd_status err; DPRINTF(("%s: clear\n", sc->sc_dev.dv_xname)); err = uchcom_generic_control_out(sc, UCHCOM_REQ_RESET, 0, 0); if (err) { printf("%s: cannot clear: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return EIO; } return 0; } int uchcom_reset_chip(struct uchcom_softc *sc) { usbd_status err; DPRINTF(("%s: reset\n", sc->sc_dev.dv_xname)); err = uchcom_generic_control_out(sc, UCHCOM_REQ_RESET, UCHCOM_RESET_VALUE, UCHCOM_RESET_INDEX); if (err) goto failed; return 0; failed: printf("%s: cannot reset: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return EIO; } int uchcom_setup_comm(struct uchcom_softc *sc) { int ret; ret = uchcom_update_version(sc); if (ret) return ret; ret = uchcom_clear_chip(sc); if (ret) return ret; ret = uchcom_set_dte_rate(sc, TTYDEF_SPEED); if (ret) return ret; ret = uchcom_set_line_control(sc, CS8); if (ret) return ret; ret = uchcom_update_status(sc); if (ret) return ret; ret = uchcom_reset_chip(sc); if (ret) return ret; ret = uchcom_set_dte_rate(sc, TTYDEF_SPEED); /* XXX */ if (ret) return ret; sc->sc_dtr = sc->sc_rts = 1; ret = uchcom_set_dtrrts(sc, sc->sc_dtr, sc->sc_rts); if (ret) return ret; return 0; } int uchcom_setup_intr_pipe(struct uchcom_softc *sc) { usbd_status err; if (sc->sc_intr_endpoint != -1 && sc->sc_intr_pipe == NULL) { sc->sc_intr_buf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK); err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_intr_endpoint, USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, sc->sc_intr_buf, sc->sc_isize, uchcom_intr, USBD_DEFAULT_INTERVAL); if (err) { printf("%s: cannot open interrupt pipe: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return EIO; } } return 0; } void uchcom_close_intr_pipe(struct uchcom_softc *sc) { usbd_status err; if (sc->sc_intr_pipe != NULL) { err = usbd_close_pipe(sc->sc_intr_pipe); if (err) printf("%s: close interrupt pipe failed: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); free(sc->sc_intr_buf, M_USBDEV, sc->sc_isize); sc->sc_intr_pipe = NULL; } } /* ---------------------------------------------------------------------- * methods for ucom */ void uchcom_get_status(void *arg, int portno, u_char *rlsr, u_char *rmsr) { struct uchcom_softc *sc = arg; if (usbd_is_dying(sc->sc_udev)) return; *rlsr = sc->sc_lsr; *rmsr = sc->sc_msr; } void uchcom_set(void *arg, int portno, int reg, int onoff) { struct uchcom_softc *sc = arg; if (usbd_is_dying(sc->sc_udev)) return; switch (reg) { case UCOM_SET_DTR: sc->sc_dtr = !!onoff; uchcom_set_dtrrts(sc, sc->sc_dtr, sc->sc_rts); break; case UCOM_SET_RTS: sc->sc_rts = !!onoff; uchcom_set_dtrrts(sc, sc->sc_dtr, sc->sc_rts); break; case UCOM_SET_BREAK: uchcom_set_break(sc, onoff); break; } } int uchcom_param(void *arg, int portno, struct termios *t) { struct uchcom_softc *sc = arg; int ret; if (usbd_is_dying(sc->sc_udev)) return 0; ret = uchcom_set_line_control(sc, t->c_cflag); if (ret) return ret; ret = uchcom_set_dte_rate(sc, t->c_ospeed); if (ret) return ret; return 0; } int uchcom_open(void *arg, int portno) { int ret; struct uchcom_softc *sc = arg; if (usbd_is_dying(sc->sc_udev)) return EIO; ret = uchcom_setup_intr_pipe(sc); if (ret) return ret; ret = uchcom_setup_comm(sc); if (ret) return ret; return 0; } void uchcom_close(void *arg, int portno) { struct uchcom_softc *sc = arg; uchcom_close_intr_pipe(sc); } /* ---------------------------------------------------------------------- * callback when the modem status is changed. */ void uchcom_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) { struct uchcom_softc *sc = priv; u_char *buf = sc->sc_intr_buf; if (usbd_is_dying(sc->sc_udev)) return; if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) return; DPRINTF(("%s: abnormal status: %s\n", sc->sc_dev.dv_xname, usbd_errstr(status))); usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); return; } DPRINTF(("%s: intr: 0x%02X 0x%02X 0x%02X 0x%02X " "0x%02X 0x%02X 0x%02X 0x%02X\n", sc->sc_dev.dv_xname, (unsigned)buf[0], (unsigned)buf[1], (unsigned)buf[2], (unsigned)buf[3], (unsigned)buf[4], (unsigned)buf[5], (unsigned)buf[6], (unsigned)buf[7])); uchcom_convert_status(sc, buf[UCHCOM_INTR_STAT1]); ucom_status_change((struct ucom_softc *) sc->sc_subdev); }