/* $NetBSD: uchcom.c,v 1.1 2007/09/03 17:57:37 tshiozak Exp $ */ /*- * Copyright (c) 2007, Takanori Watanabe * All rights reserved. * * 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 AUTHOR 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 AUTHOR 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. */ /* * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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. */ #include __FBSDID("$FreeBSD: src/sys/dev/usb/uchcom.c,v 1.1 2007/10/18 10:51:06 takawata Exp $"); /* * driver for WinChipHead CH341/340, the worst USB-serial chip in the world. */ #include #include #include #include #include #include #include #include #include #include #include #include "usbdevs.h" #ifdef USB_DEBUG #define DPRINTFN(n,fmt,...) \ do { if (uchcom_debug > (n)) { \ printf("%s: " fmt, __FUNCTION__,## __VA_ARGS__); } } while (0) static int uchcom_debug = 0; SYSCTL_NODE(_hw_usb, OID_AUTO, uchcom, CTLFLAG_RW, 0, "USB uchcom"); SYSCTL_INT(_hw_usb_uchcom, OID_AUTO, debug, CTLFLAG_RW, &uchcom_debug, 0, "uchcom debug level"); #else #define DPRINTFN(...) do { } while (0) #endif #define UCHCOM_IFACE_INDEX 0 #define UCHCOM_CONFIG_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_LCR1_MASK 0xAF #define UCHCOM_LCR2_MASK 0x07 #define UCHCOM_LCR1_PARENB 0x80 #define UCHCOM_LCR2_PAREVEN 0x07 #define UCHCOM_LCR2_PARODD 0x06 #define UCHCOM_LCR2_PARMARK 0x05 #define UCHCOM_LCR2_PARSPACE 0x04 #define UCHCOM_INTR_STAT1 0x02 #define UCHCOM_INTR_STAT2 0x03 #define UCHCOM_INTR_LEAST 4 #define UCHCOM_BULK_BUF_SIZE 1024 /* bytes */ #define UCHCOM_N_TRANSFER 6 /* units */ struct uchcom_softc { struct ucom_super_softc sc_super_ucom; struct ucom_softc sc_ucom; struct usbd_xfer *sc_xfer[UCHCOM_N_TRANSFER]; struct usbd_device *sc_udev; uint8_t sc_dtr; /* local copy */ uint8_t sc_rts; /* local copy */ uint8_t sc_version; uint8_t sc_msr; uint8_t sc_lsr; /* local status register */ uint8_t sc_flag; #define UCHCOM_FLAG_INTR_STALL 0x01 #define UCHCOM_FLAG_READ_STALL 0x02 #define UCHCOM_FLAG_WRITE_STALL 0x04 }; 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}}, }; #define NUM_DIVIDERS (sizeof (dividers) / sizeof (dividers[0])) static const struct usb_devno uchcom_devs[] = { {USB_VENDOR_WCH, USB_PRODUCT_WCH_CH341SER}, }; #define uchcom_lookup(v, p) usb_lookup(uchcom_devs, v, p) /* protypes */ static int uchcom_ioctl(struct ucom_softc *ucom, uint32_t cmd, caddr_t data, int flag, struct thread *td); static int uchcom_pre_param(struct ucom_softc *ucom, struct termios *t); static void uchcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr); static void uchcom_cfg_param(struct ucom_softc *ucom, struct termios *t); static void uchcom_cfg_set_break(struct ucom_softc *sc, uint8_t onoff); static void uchcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff); static void uchcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff); static void uchcom_start_read(struct ucom_softc *ucom); static void uchcom_start_write(struct ucom_softc *ucom); static void uchcom_stop_read(struct ucom_softc *ucom); static void uchcom_stop_write(struct ucom_softc *ucom); static void uchcom_update_version(struct uchcom_softc *sc); static void uchcom_convert_status(struct uchcom_softc *sc, uint8_t cur); static void uchcom_update_status(struct uchcom_softc *sc); static void uchcom_set_dtrrts(struct uchcom_softc *sc); static int uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate); static void uchcom_set_dte_rate(struct uchcom_softc *sc, uint32_t rate); static void uchcom_set_line_control(struct uchcom_softc *sc, tcflag_t cflag); static void uchcom_clear_chip(struct uchcom_softc *sc); static void uchcom_reset_chip(struct uchcom_softc *sc); static device_probe_t uchcom_probe; static device_attach_t uchcom_attach; static device_detach_t uchcom_detach; static usbd_callback_t uchcom_intr_callback; static usbd_callback_t uchcom_intr_clear_stall_callback; static usbd_callback_t uchcom_write_callback; static usbd_callback_t uchcom_write_clear_stall_callback; static usbd_callback_t uchcom_read_callback; static usbd_callback_t uchcom_read_clear_stall_callback; static const struct usbd_config uchcom_config_data[UCHCOM_N_TRANSFER] = { [0] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_OUT, .mh.bufsize = UCHCOM_BULK_BUF_SIZE, .mh.flags = {.pipe_bof = 1,.force_short_xfer = 1,}, .mh.callback = &uchcom_write_callback, }, [1] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, .mh.bufsize = UCHCOM_BULK_BUF_SIZE, .mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, .mh.callback = &uchcom_read_callback, }, [2] = { .type = UE_CONTROL, .endpoint = 0x00, /* Control pipe */ .direction = UE_DIR_ANY, .mh.bufsize = sizeof(usb_device_request_t), .mh.callback = &uchcom_write_clear_stall_callback, .mh.timeout = 1000, /* 1 second */ .mh.interval = 50, /* 50ms */ }, [3] = { .type = UE_CONTROL, .endpoint = 0x00, /* Control pipe */ .direction = UE_DIR_ANY, .mh.bufsize = sizeof(usb_device_request_t), .mh.callback = &uchcom_read_clear_stall_callback, .mh.timeout = 1000, /* 1 second */ .mh.interval = 50, /* 50ms */ }, [4] = { .type = UE_INTERRUPT, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, .mh.flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, .mh.bufsize = 0, /* use wMaxPacketSize */ .mh.callback = &uchcom_intr_callback, }, [5] = { .type = UE_CONTROL, .endpoint = 0x00, /* Control pipe */ .direction = UE_DIR_ANY, .mh.bufsize = sizeof(usb_device_request_t), .mh.callback = &uchcom_intr_clear_stall_callback, .mh.timeout = 1000, /* 1 second */ .mh.interval = 50, /* 50ms */ }, }; struct ucom_callback uchcom_callback = { .ucom_cfg_get_status = &uchcom_cfg_get_status, .ucom_cfg_set_dtr = &uchcom_cfg_set_dtr, .ucom_cfg_set_rts = &uchcom_cfg_set_rts, .ucom_cfg_set_break = &uchcom_cfg_set_break, .ucom_cfg_param = &uchcom_cfg_param, .ucom_pre_param = &uchcom_pre_param, .ucom_ioctl = &uchcom_ioctl, .ucom_start_read = &uchcom_start_read, .ucom_stop_read = &uchcom_stop_read, .ucom_start_write = &uchcom_start_write, .ucom_stop_write = &uchcom_stop_write, }; /* ---------------------------------------------------------------------- * driver entry points */ static int uchcom_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); DPRINTFN(10, "\n"); if (uaa->usb_mode != USB_MODE_HOST) { return (UMATCH_NONE); } if (uaa->iface) { return (UMATCH_NONE); } return (uchcom_lookup(uaa->vendor, uaa->product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE); } static int uchcom_attach(device_t dev) { struct uchcom_softc *sc = device_get_softc(dev); struct usb_attach_arg *uaa = device_get_ivars(dev); int error; uint8_t iface_index; DPRINTFN(10, "\n"); if (sc == NULL) { return (ENOMEM); } usbd_set_device_desc(dev); sc->sc_udev = uaa->device; /* configure the chip */ error = usbd_set_config_index(uaa->device, UCHCOM_CONFIG_INDEX, 1); if (error) { device_printf(dev, "failed to set configuration, " "error=%s\n", usbd_errstr(error)); goto detach; } switch (uaa->release) { case UCHCOM_REV_CH340: device_printf(dev, "CH340 detected\n"); break; default: device_printf(dev, "CH341 detected\n"); break; } iface_index = UCHCOM_IFACE_INDEX; error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer, uchcom_config_data, UCHCOM_N_TRANSFER, sc, &Giant); if (error) { DPRINTFN(0, "one or more missing USB endpoints, " "error=%s\n", usbd_errstr(error)); goto detach; } /* * Do the initialization during attach so that the system does not * sleep during open: */ uchcom_update_version(sc); uchcom_clear_chip(sc); uchcom_reset_chip(sc); uchcom_update_status(sc); sc->sc_dtr = 1; sc->sc_rts = 1; /* clear stall at first run */ sc->sc_flag |= (UCHCOM_FLAG_READ_STALL | UCHCOM_FLAG_WRITE_STALL); error = ucom_attach(&(sc->sc_super_ucom), &(sc->sc_ucom), 1, sc, &uchcom_callback, &Giant); if (error) { goto detach; } return (0); detach: uchcom_detach(dev); return (ENXIO); } static int uchcom_detach(device_t dev) { struct uchcom_softc *sc = device_get_softc(dev); DPRINTFN(10, "\n"); ucom_detach(&(sc->sc_super_ucom), &(sc->sc_ucom), 1); usbd_transfer_unsetup(sc->sc_xfer, UCHCOM_N_TRANSFER); return (0); } /* ---------------------------------------------------------------------- * low level i/o */ static void uchcom_do_request(struct uchcom_softc *sc, usb_device_request_t *req, void *data) { uint16_t length; uint16_t actlen; usbd_status_t err; length = UGETW(req->wLength); actlen = 0; if (ucom_cfg_is_gone(&(sc->sc_ucom))) { goto done; } err = usbd_do_request_flags(sc->sc_udev, &Giant, req, data, USBD_SHORT_XFER_OK, &actlen, 1000); if (err) { DPRINTFN(-1, "device request failed, err=%s " "(ignored)\n", usbd_errstr(err)); } done: if (length != actlen) { if (req->bmRequestType & UT_READ) { bzero(USBD_ADD_BYTES(data, actlen), length - actlen); } } return; } static void uchcom_ctrl_write(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); uchcom_do_request(sc, &req, NULL); return; } static void uchcom_ctrl_read(struct uchcom_softc *sc, uint8_t reqno, uint16_t value, uint16_t index, void *buf, uint16_t buflen) { 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, buflen); uchcom_do_request(sc, &req, buf); return; } static void uchcom_write_reg(struct uchcom_softc *sc, uint8_t reg1, uint8_t val1, uint8_t reg2, uint8_t val2) { DPRINTFN(0, "0x%02X<-0x%02X, 0x%02X<-0x%02X\n", (unsigned)reg1, (unsigned)val1, (unsigned)reg2, (unsigned)val2); uchcom_ctrl_write( sc, UCHCOM_REQ_WRITE_REG, reg1 | ((uint16_t)reg2 << 8), val1 | ((uint16_t)val2 << 8)); return; } static void 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]; uchcom_ctrl_read( sc, UCHCOM_REQ_READ_REG, reg1 | ((uint16_t)reg2 << 8), 0, buf, sizeof(buf)); DPRINTFN(0, "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; } static void uchcom_get_version(struct uchcom_softc *sc, uint8_t *rver) { uint8_t buf[UCHCOM_INPUT_BUF_SIZE]; uchcom_ctrl_read( sc, UCHCOM_REQ_GET_VERSION, 0, 0, buf, sizeof(buf)); if (rver) *rver = buf[0]; return; } static void uchcom_get_status(struct uchcom_softc *sc, uint8_t *rval) { uchcom_read_reg(sc, UCHCOM_REG_STAT1, rval, UCHCOM_REG_STAT2, NULL); return; } static void uchcom_set_dtrrts_10(struct uchcom_softc *sc, uint8_t val) { uchcom_write_reg(sc, UCHCOM_REG_STAT1, val, UCHCOM_REG_STAT1, val); return; } static void uchcom_set_dtrrts_20(struct uchcom_softc *sc, uint8_t val) { uchcom_ctrl_write(sc, UCHCOM_REQ_SET_DTRRTS, val, 0); return; } /* ---------------------------------------------------------------------- * middle layer */ static void uchcom_update_version(struct uchcom_softc *sc) { uchcom_get_version(sc, &sc->sc_version); return; } static 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); } static void uchcom_update_status(struct uchcom_softc *sc) { uint8_t cur; uchcom_get_status(sc, &cur); uchcom_convert_status(sc, cur); return; } static void uchcom_set_dtrrts(struct uchcom_softc *sc) { uint8_t val = 0; if (sc->sc_dtr) val |= UCHCOM_DTR_MASK; if (sc->sc_rts) val |= UCHCOM_RTS_MASK; if (sc->sc_version < UCHCOM_VER_20) uchcom_set_dtrrts_10(sc, ~val); else uchcom_set_dtrrts_20(sc, ~val); return; } static void uchcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff) { struct uchcom_softc *sc = ucom->sc_parent; uint8_t brk1; uint8_t brk2; uchcom_read_reg(sc, UCHCOM_REG_BREAK1, &brk1, UCHCOM_REG_BREAK2, &brk2); 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; } uchcom_write_reg(sc, UCHCOM_REG_BREAK1, brk1, UCHCOM_REG_BREAK2, brk2); return; } static int uchcom_calc_divider_settings(struct uchcom_divider *dp, uint32_t rate) { const struct uchcom_divider_record *rp; uint32_t div; uint32_t rem; uint32_t mod; uint8_t i; /* find record */ for (i = 0; i != NUM_DIVIDERS; i++) { if (dividers[i].dvr_high >= 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); } static void uchcom_set_dte_rate(struct uchcom_softc *sc, uint32_t rate) { struct uchcom_divider dv; if (uchcom_calc_divider_settings(&dv, rate)) return; uchcom_write_reg(sc, UCHCOM_REG_BPS_PRE, dv.dv_prescaler, UCHCOM_REG_BPS_DIV, dv.dv_div); uchcom_write_reg(sc, UCHCOM_REG_BPS_MOD, dv.dv_mod, UCHCOM_REG_BPS_PAD, 0); return; } static void uchcom_set_line_control(struct uchcom_softc *sc, tcflag_t cflag) { uint8_t lcr1 = 0; uint8_t lcr2 = 0; uchcom_read_reg(sc, UCHCOM_REG_LCR1, &lcr1, UCHCOM_REG_LCR2, &lcr2); lcr1 &= ~UCHCOM_LCR1_MASK; lcr2 &= ~UCHCOM_LCR2_MASK; /* * XXX: it is difficult to handle the line control appropriately: * - CS8, !CSTOPB and any parity mode seems ok, but * - the chip doesn't have the function to calculate parity * in !CS8 mode. * - it is unclear that the chip supports CS5,6 mode. * - it is unclear how to handle stop bits. */ if (cflag & PARENB) { lcr1 |= UCHCOM_LCR1_PARENB; if (cflag & PARODD) lcr2 |= UCHCOM_LCR2_PARODD; else lcr2 |= UCHCOM_LCR2_PAREVEN; } uchcom_write_reg(sc, UCHCOM_REG_LCR1, lcr1, UCHCOM_REG_LCR2, lcr2); return; } static void uchcom_clear_chip(struct uchcom_softc *sc) { DPRINTFN(0, "\n"); uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, 0, 0); return; } static void uchcom_reset_chip(struct uchcom_softc *sc) { uint16_t val; uint16_t idx; uint8_t lcr1; uint8_t lcr2; uint8_t pre; uint8_t div; uint8_t mod; uchcom_read_reg(sc, UCHCOM_REG_LCR1, &lcr1, UCHCOM_REG_LCR2, &lcr2); uchcom_read_reg(sc, UCHCOM_REG_BPS_PRE, &pre, UCHCOM_REG_BPS_DIV, &div); uchcom_read_reg(sc, UCHCOM_REG_BPS_MOD, &mod, UCHCOM_REG_BPS_PAD, NULL); val = 0; idx = 0; val |= (uint16_t)(lcr1 & 0xF0) << 8; val |= 0x01; val |= (uint16_t)(lcr2 & 0x0F) << 8; val |= 0x02; idx |= pre & 0x07; val |= 0x04; idx |= (uint16_t)div << 8; val |= 0x08; idx |= mod & 0xF8; val |= 0x10; DPRINTFN(0, "reset v=0x%04X, i=0x%04X\n", val, idx); uchcom_ctrl_write(sc, UCHCOM_REQ_RESET, val, idx); return; } /* ---------------------------------------------------------------------- * methods for ucom */ static void uchcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) { struct uchcom_softc *sc = ucom->sc_parent; DPRINTFN(0, "\n"); *lsr = sc->sc_lsr; *msr = sc->sc_msr; return; } static int uchcom_ioctl(struct ucom_softc *ucom, uint32_t cmd, caddr_t data, int flag, struct thread *td) { return (ENOTTY); } static void uchcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff) { struct uchcom_softc *sc = ucom->sc_parent; DPRINTFN(0, "onoff = %d\n", onoff); sc->sc_dtr = onoff; uchcom_set_dtrrts(sc); return; } static void uchcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff) { struct uchcom_softc *sc = ucom->sc_parent; DPRINTFN(0, "onoff = %d\n", onoff); sc->sc_rts = onoff; uchcom_set_dtrrts(sc); return; } static int uchcom_pre_param(struct ucom_softc *ucom, struct termios *t) { struct uchcom_divider dv; switch (t->c_cflag & CSIZE) { case CS5: case CS6: case CS7: return (EIO); default: break; } if (uchcom_calc_divider_settings(&dv, t->c_ospeed)) { return (EIO); } return (0); /* success */ } static void uchcom_cfg_param(struct ucom_softc *ucom, struct termios *t) { struct uchcom_softc *sc = ucom->sc_parent; uchcom_set_line_control(sc, t->c_cflag); uchcom_set_dte_rate(sc, t->c_ospeed); return; } static void uchcom_start_read(struct ucom_softc *ucom) { struct uchcom_softc *sc = ucom->sc_parent; /* start interrupt endpoint */ usbd_transfer_start(sc->sc_xfer[4]); /* start read endpoint */ usbd_transfer_start(sc->sc_xfer[1]); return; } static void uchcom_stop_read(struct ucom_softc *ucom) { struct uchcom_softc *sc = ucom->sc_parent; /* stop interrupt endpoint */ usbd_transfer_stop(sc->sc_xfer[4]); /* stop read endpoint */ usbd_transfer_stop(sc->sc_xfer[3]); usbd_transfer_stop(sc->sc_xfer[1]); return; } static void uchcom_start_write(struct ucom_softc *ucom) { struct uchcom_softc *sc = ucom->sc_parent; usbd_transfer_start(sc->sc_xfer[0]); return; } static void uchcom_stop_write(struct ucom_softc *ucom) { struct uchcom_softc *sc = ucom->sc_parent; usbd_transfer_stop(sc->sc_xfer[2]); usbd_transfer_stop(sc->sc_xfer[0]); return; } /* ---------------------------------------------------------------------- * callback when the modem status is changed. */ static void uchcom_intr_callback(struct usbd_xfer *xfer) { struct uchcom_softc *sc = xfer->priv_sc; uint8_t buf[UCHCOM_INTR_LEAST]; switch (USBD_GET_STATE(xfer)) { case USBD_ST_TRANSFERRED: DPRINTFN(0, "actlen = %u\n", xfer->actlen); if (xfer->actlen >= UCHCOM_INTR_LEAST) { usbd_copy_out(xfer->frbuffers, 0, buf, UCHCOM_INTR_LEAST); DPRINTFN(0, "data = 0x%02X 0x%02X 0x%02X 0x%02X\n", (unsigned)buf[0], (unsigned)buf[1], (unsigned)buf[2], (unsigned)buf[3]); uchcom_convert_status(sc, buf[UCHCOM_INTR_STAT1]); ucom_status_change(&sc->sc_ucom); } case USBD_ST_SETUP: if (sc->sc_flag & UCHCOM_FLAG_INTR_STALL) { usbd_transfer_start(sc->sc_xfer[5]); } else { xfer->frlengths[0] = xfer->max_data_length; usbd_start_hardware(xfer); } break; default: /* Error */ if (xfer->error != USBD_ERR_CANCELLED) { sc->sc_flag |= UCHCOM_FLAG_INTR_STALL; usbd_transfer_start(sc->sc_xfer[5]); } break; } return; } static void uchcom_intr_clear_stall_callback(struct usbd_xfer *xfer) { struct uchcom_softc *sc = xfer->priv_sc; struct usbd_xfer *xfer_other = sc->sc_xfer[4]; if (usbd_clear_stall_callback(xfer, xfer_other)) { DPRINTFN(0, "stall cleared\n"); sc->sc_flag &= ~UCHCOM_FLAG_INTR_STALL; usbd_transfer_start(xfer_other); } return; } static void uchcom_write_callback(struct usbd_xfer *xfer) { struct uchcom_softc *sc = xfer->priv_sc; uint32_t actlen; switch (USBD_GET_STATE(xfer)) { case USBD_ST_SETUP: case USBD_ST_TRANSFERRED: if (sc->sc_flag & UCHCOM_FLAG_WRITE_STALL) { usbd_transfer_start(sc->sc_xfer[2]); return; } if (ucom_get_data(&(sc->sc_ucom), xfer->frbuffers, 0, UCHCOM_BULK_BUF_SIZE, &actlen)) { DPRINTFN(0, "actlen = %d\n", actlen); xfer->frlengths[0] = actlen; usbd_start_hardware(xfer); } return; default: /* Error */ if (xfer->error != USBD_ERR_CANCELLED) { sc->sc_flag |= UCHCOM_FLAG_WRITE_STALL; usbd_transfer_start(sc->sc_xfer[2]); } return; } } static void uchcom_write_clear_stall_callback(struct usbd_xfer *xfer) { struct uchcom_softc *sc = xfer->priv_sc; struct usbd_xfer *xfer_other = sc->sc_xfer[0]; if (usbd_clear_stall_callback(xfer, xfer_other)) { DPRINTFN(0, "stall cleared\n"); sc->sc_flag &= ~UCHCOM_FLAG_WRITE_STALL; usbd_transfer_start(xfer_other); } return; } static void uchcom_read_callback(struct usbd_xfer *xfer) { struct uchcom_softc *sc = xfer->priv_sc; switch (USBD_GET_STATE(xfer)) { case USBD_ST_TRANSFERRED: ucom_put_data(&(sc->sc_ucom), xfer->frbuffers, 0, xfer->actlen); case USBD_ST_SETUP: if (sc->sc_flag & UCHCOM_FLAG_READ_STALL) { usbd_transfer_start(sc->sc_xfer[3]); } else { xfer->frlengths[0] = xfer->max_data_length; usbd_start_hardware(xfer); } return; default: /* Error */ if (xfer->error != USBD_ERR_CANCELLED) { sc->sc_flag |= UCHCOM_FLAG_READ_STALL; usbd_transfer_start(sc->sc_xfer[3]); } return; } } static void uchcom_read_clear_stall_callback(struct usbd_xfer *xfer) { struct uchcom_softc *sc = xfer->priv_sc; struct usbd_xfer *xfer_other = sc->sc_xfer[1]; if (usbd_clear_stall_callback(xfer, xfer_other)) { DPRINTFN(0, "stall cleared\n"); sc->sc_flag &= ~UCHCOM_FLAG_READ_STALL; usbd_transfer_start(xfer_other); } return; } static device_method_t uchcom_methods[] = { /* Device interface */ DEVMETHOD(device_probe, uchcom_probe), DEVMETHOD(device_attach, uchcom_attach), DEVMETHOD(device_detach, uchcom_detach), {0, 0} }; static driver_t uchcom_driver = { "ucom", uchcom_methods, sizeof(struct uchcom_softc) }; static devclass_t uchcom_devclass; DRIVER_MODULE(uchcom, uhub, uchcom_driver, uchcom_devclass, usbd_driver_load, 0); MODULE_DEPEND(uchcom, usb, 1, 1, 1); MODULE_DEPEND(uchcom, ucom, UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);