/* $OpenBSD: uslcom.c,v 1.17 2007/11/24 10:52:12 jsg Exp $ */ /* * Copyright (c) 2006 Jonathan Gray * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define USB_DEBUG_VAR uslcom_debug #include #include #include #ifdef USB_DEBUG static int uslcom_debug = 0; static SYSCTL_NODE(_hw_usb, OID_AUTO, uslcom, CTLFLAG_RW, 0, "USB uslcom"); SYSCTL_INT(_hw_usb_uslcom, OID_AUTO, debug, CTLFLAG_RW, &uslcom_debug, 0, "Debug level"); #endif #define USLCOM_BULK_BUF_SIZE 1024 #define USLCOM_CONFIG_INDEX 0 #define USLCOM_IFACE_INDEX 0 #define USLCOM_SET_DATA_BITS(x) ((x) << 8) /* Request types */ #define USLCOM_WRITE 0x41 #define USLCOM_READ 0xc1 /* Request codes */ #define USLCOM_UART 0x00 #define USLCOM_BAUD_RATE 0x01 #define USLCOM_DATA 0x03 #define USLCOM_BREAK 0x05 #define USLCOM_CTRL 0x07 #define USLCOM_RCTRL 0x08 #define USLCOM_SET_FLOWCTRL 0x13 #define USLCOM_VENDOR_SPECIFIC 0xff /* USLCOM_UART values */ #define USLCOM_UART_DISABLE 0x00 #define USLCOM_UART_ENABLE 0x01 /* USLCOM_CTRL/USLCOM_RCTRL values */ #define USLCOM_CTRL_DTR_ON 0x0001 #define USLCOM_CTRL_DTR_SET 0x0100 #define USLCOM_CTRL_RTS_ON 0x0002 #define USLCOM_CTRL_RTS_SET 0x0200 #define USLCOM_CTRL_CTS 0x0010 #define USLCOM_CTRL_DSR 0x0020 #define USLCOM_CTRL_RI 0x0040 #define USLCOM_CTRL_DCD 0x0080 /* USLCOM_BAUD_RATE values */ #define USLCOM_BAUD_REF 0x384000 /* USLCOM_DATA values */ #define USLCOM_STOP_BITS_1 0x00 #define USLCOM_STOP_BITS_2 0x02 #define USLCOM_PARITY_NONE 0x00 #define USLCOM_PARITY_ODD 0x10 #define USLCOM_PARITY_EVEN 0x20 #define USLCOM_PORT_NO 0x0000 /* USLCOM_BREAK values */ #define USLCOM_BREAK_OFF 0x00 #define USLCOM_BREAK_ON 0x01 /* USLCOM_SET_FLOWCTRL values - 1st word */ #define USLCOM_FLOW_DTR_ON 0x00000001 /* DTR static active */ #define USLCOM_FLOW_CTS_HS 0x00000008 /* CTS handshake */ /* USLCOM_SET_FLOWCTRL values - 2nd word */ #define USLCOM_FLOW_RTS_ON 0x00000040 /* RTS static active */ #define USLCOM_FLOW_RTS_HS 0x00000080 /* RTS handshake */ /* USLCOM_VENDOR_SPECIFIC values */ #define USLCOM_WRITE_LATCH 0x37E1 #define USLCOM_READ_LATCH 0x00C2 enum { USLCOM_BULK_DT_WR, USLCOM_BULK_DT_RD, USLCOM_CTRL_DT_RD, USLCOM_N_TRANSFER, }; struct uslcom_softc { struct ucom_super_softc sc_super_ucom; struct ucom_softc sc_ucom; struct usb_callout sc_watchdog; struct usb_xfer *sc_xfer[USLCOM_N_TRANSFER]; struct usb_device *sc_udev; struct lock sc_lock; uint8_t sc_msr; uint8_t sc_lsr; }; static device_probe_t uslcom_probe; static device_attach_t uslcom_attach; static device_detach_t uslcom_detach; static usb_callback_t uslcom_write_callback; static usb_callback_t uslcom_read_callback; static usb_callback_t uslcom_control_callback; static void uslcom_open(struct ucom_softc *); static void uslcom_close(struct ucom_softc *); static void uslcom_set_dtr(struct ucom_softc *, uint8_t); static void uslcom_set_rts(struct ucom_softc *, uint8_t); static void uslcom_set_break(struct ucom_softc *, uint8_t); static int uslcom_ioctl(struct ucom_softc *, uint32_t, caddr_t, int, struct thread *); static int uslcom_pre_param(struct ucom_softc *, struct termios *); static void uslcom_param(struct ucom_softc *, struct termios *); static void uslcom_get_status(struct ucom_softc *, uint8_t *, uint8_t *); static void uslcom_start_read(struct ucom_softc *); static void uslcom_stop_read(struct ucom_softc *); static void uslcom_start_write(struct ucom_softc *); static void uslcom_stop_write(struct ucom_softc *); static void uslcom_poll(struct ucom_softc *ucom); static const struct usb_config uslcom_config[USLCOM_N_TRANSFER] = { [USLCOM_BULK_DT_WR] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_OUT, .bufsize = USLCOM_BULK_BUF_SIZE, .flags = {.pipe_bof = 1,}, .callback = &uslcom_write_callback, }, [USLCOM_BULK_DT_RD] = { .type = UE_BULK, .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, .bufsize = USLCOM_BULK_BUF_SIZE, .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, .callback = &uslcom_read_callback, }, [USLCOM_CTRL_DT_RD] = { .type = UE_CONTROL, .endpoint = 0x00, .direction = UE_DIR_ANY, .bufsize = sizeof(struct usb_device_request) + 8, .flags = {.pipe_bof = 1,}, .callback = &uslcom_control_callback, .timeout = 1000, /* 1 second timeout */ }, }; static struct ucom_callback uslcom_callback = { .ucom_cfg_open = &uslcom_open, .ucom_cfg_close = &uslcom_close, .ucom_cfg_get_status = &uslcom_get_status, .ucom_cfg_set_dtr = &uslcom_set_dtr, .ucom_cfg_set_rts = &uslcom_set_rts, .ucom_cfg_set_break = &uslcom_set_break, .ucom_ioctl = &uslcom_ioctl, .ucom_cfg_param = &uslcom_param, .ucom_pre_param = &uslcom_pre_param, .ucom_start_read = &uslcom_start_read, .ucom_stop_read = &uslcom_stop_read, .ucom_start_write = &uslcom_start_write, .ucom_stop_write = &uslcom_stop_write, .ucom_poll = &uslcom_poll, }; static const STRUCT_USB_HOST_ID uslcom_devs[] = { #define USLCOM_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) } USLCOM_DEV(BALTECH, CARDREADER), USLCOM_DEV(CLIPSAL, 5500PCU), USLCOM_DEV(DATAAPEX, MULTICOM), USLCOM_DEV(DELL, DW700), USLCOM_DEV(DIGIANSWER, ZIGBEE802154), USLCOM_DEV(DYNASTREAM, ANTDEVBOARD), USLCOM_DEV(DYNASTREAM, ANTDEVBOARD2), USLCOM_DEV(DYNASTREAM, ANT2USB), USLCOM_DEV(ELV, USBI2C), USLCOM_DEV(FOXCONN, PIRELLI_DP_L10), USLCOM_DEV(FOXCONN, TCOM_TC_300), USLCOM_DEV(GEMALTO, PROXPU), USLCOM_DEV(JABLOTRON, PC60B), USLCOM_DEV(MEI, CASHFLOW_SC), USLCOM_DEV(MEI, S2000), USLCOM_DEV(JABLOTRON, PC60B), USLCOM_DEV(OWEN, AC4), USLCOM_DEV(PHILIPS, ACE1001), USLCOM_DEV(PLX, CA42), USLCOM_DEV(RENESAS, RX610), USLCOM_DEV(SILABS, AEROCOMM), USLCOM_DEV(SILABS, AMBER_AMB2560), USLCOM_DEV(SILABS, ARGUSISP), USLCOM_DEV(SILABS, ARKHAM_DS101_A), USLCOM_DEV(SILABS, ARKHAM_DS101_M), USLCOM_DEV(SILABS, ARYGON_MIFARE), USLCOM_DEV(SILABS, AVIT_USB_TTL), USLCOM_DEV(SILABS, B_G_H3000), USLCOM_DEV(SILABS, BALLUFF_RFID), USLCOM_DEV(SILABS, BEI_VCP), USLCOM_DEV(SILABS, BSM7DUSB), USLCOM_DEV(SILABS, BURNSIDE), USLCOM_DEV(SILABS, C2_EDGE_MODEM), USLCOM_DEV(SILABS, CP2102), USLCOM_DEV(SILABS, CP210X_2), USLCOM_DEV(SILABS, CRUMB128), USLCOM_DEV(SILABS, CYGNAL), USLCOM_DEV(SILABS, CYGNAL_DEBUG), USLCOM_DEV(SILABS, CYGNAL_GPS), USLCOM_DEV(SILABS, DEGREE), USLCOM_DEV(SILABS, EMS_C1007), USLCOM_DEV(SILABS, HELICOM), USLCOM_DEV(SILABS, IMS_USB_RS422), USLCOM_DEV(SILABS, INFINITY_MIC), USLCOM_DEV(SILABS, INSYS_MODEM), USLCOM_DEV(SILABS, KYOCERA_GPS), USLCOM_DEV(SILABS, LIPOWSKY_HARP), USLCOM_DEV(SILABS, LIPOWSKY_JTAG), USLCOM_DEV(SILABS, LIPOWSKY_LIN), USLCOM_DEV(SILABS, MC35PU), USLCOM_DEV(SILABS, MJS_TOSLINK), USLCOM_DEV(SILABS, MSD_DASHHAWK), USLCOM_DEV(SILABS, POLOLU), USLCOM_DEV(SILABS, PROCYON_AVS), USLCOM_DEV(SILABS, SB_PARAMOUNT_ME), USLCOM_DEV(SILABS, SUUNTO), USLCOM_DEV(SILABS, TAMSMASTER), USLCOM_DEV(SILABS, TELEGESIS_ETRX2), USLCOM_DEV(SILABS, TRACIENT), USLCOM_DEV(SILABS, TRAQMATE), USLCOM_DEV(SILABS, USBCOUNT50), USLCOM_DEV(SILABS, USBPULSE100), USLCOM_DEV(SILABS, USBSCOPE50), USLCOM_DEV(SILABS, USBWAVE12), USLCOM_DEV(SILABS, VSTABI), USLCOM_DEV(SILABS, WAVIT), USLCOM_DEV(SILABS, WMRBATT), USLCOM_DEV(SILABS, WMRRIGBLASTER), USLCOM_DEV(SILABS, WMRRIGTALK), USLCOM_DEV(SILABS, ZEPHYR_BIO), USLCOM_DEV(SILABS2, DCU11CLONE), USLCOM_DEV(SILABS3, GPRS_MODEM), USLCOM_DEV(SILABS4, 100EU_MODEM), USLCOM_DEV(SYNTECH, CYPHERLAB100), USLCOM_DEV(USI, MC60), USLCOM_DEV(VAISALA, CABLE), USLCOM_DEV(WAGO, SERVICECABLE), USLCOM_DEV(WAVESENSE, JAZZ), USLCOM_DEV(WIENERPLEINBAUS, PL512), USLCOM_DEV(WIENERPLEINBAUS, RCM), USLCOM_DEV(WIENERPLEINBAUS, MPOD), USLCOM_DEV(WIENERPLEINBAUS, CML), #undef USLCOM_DEV }; static device_method_t uslcom_methods[] = { DEVMETHOD(device_probe, uslcom_probe), DEVMETHOD(device_attach, uslcom_attach), DEVMETHOD(device_detach, uslcom_detach), {0, 0} }; static devclass_t uslcom_devclass; static driver_t uslcom_driver = { .name = "uslcom", .methods = uslcom_methods, .size = sizeof(struct uslcom_softc), }; DRIVER_MODULE(uslcom, uhub, uslcom_driver, uslcom_devclass, NULL, 0); MODULE_DEPEND(uslcom, ucom, 1, 1, 1); MODULE_DEPEND(uslcom, usb, 1, 1, 1); MODULE_VERSION(uslcom, 1); static void uslcom_watchdog(void *arg) { struct uslcom_softc *sc = arg; KKASSERT(lockowned(&sc->sc_lock)); usbd_transfer_start(sc->sc_xfer[USLCOM_CTRL_DT_RD]); usb_callout_reset(&sc->sc_watchdog, hz / 4, &uslcom_watchdog, sc); } static int uslcom_probe(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); DPRINTFN(11, "\n"); if (uaa->usb_mode != USB_MODE_HOST) { return (ENXIO); } if (uaa->info.bConfigIndex != USLCOM_CONFIG_INDEX) { return (ENXIO); } if (uaa->info.bIfaceIndex != USLCOM_IFACE_INDEX) { return (ENXIO); } return (usbd_lookup_id_by_uaa(uslcom_devs, sizeof(uslcom_devs), uaa)); } static int uslcom_attach(device_t dev) { struct usb_attach_arg *uaa = device_get_ivars(dev); struct uslcom_softc *sc = device_get_softc(dev); int error; DPRINTFN(11, "\n"); device_set_usb_desc(dev); lockinit(&sc->sc_lock, "uslcom", 0, LK_CANRECURSE); usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_lock, 0); sc->sc_udev = uaa->device; error = usbd_transfer_setup(uaa->device, &uaa->info.bIfaceIndex, sc->sc_xfer, uslcom_config, USLCOM_N_TRANSFER, sc, &sc->sc_lock); if (error) { DPRINTF("one or more missing USB endpoints, " "error=%s\n", usbd_errstr(error)); goto detach; } /* clear stall at first run */ lockmgr(&sc->sc_lock, LK_EXCLUSIVE); usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_WR]); usbd_xfer_set_stall(sc->sc_xfer[USLCOM_BULK_DT_RD]); lockmgr(&sc->sc_lock, LK_RELEASE); error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc, &uslcom_callback, &sc->sc_lock); if (error) { goto detach; } ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev); return (0); detach: uslcom_detach(dev); return (ENXIO); } static int uslcom_detach(device_t dev) { struct uslcom_softc *sc = device_get_softc(dev); DPRINTF("sc=%p\n", sc); ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom); usbd_transfer_unsetup(sc->sc_xfer, USLCOM_N_TRANSFER); usb_callout_drain(&sc->sc_watchdog); lockuninit(&sc->sc_lock); return (0); } static void uslcom_open(struct ucom_softc *ucom) { struct uslcom_softc *sc = ucom->sc_parent; struct usb_device_request req; req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_UART; USETW(req.wValue, USLCOM_UART_ENABLE); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("UART enable failed (ignored)\n"); } /* start polling status */ uslcom_watchdog(sc); } static void uslcom_close(struct ucom_softc *ucom) { struct uslcom_softc *sc = ucom->sc_parent; struct usb_device_request req; /* stop polling status */ usb_callout_stop(&sc->sc_watchdog); req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_UART; USETW(req.wValue, USLCOM_UART_DISABLE); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("UART disable failed (ignored)\n"); } } static void uslcom_set_dtr(struct ucom_softc *ucom, uint8_t onoff) { struct uslcom_softc *sc = ucom->sc_parent; struct usb_device_request req; uint16_t ctl; DPRINTF("onoff = %d\n", onoff); ctl = onoff ? USLCOM_CTRL_DTR_ON : 0; ctl |= USLCOM_CTRL_DTR_SET; req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_CTRL; USETW(req.wValue, ctl); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("Setting DTR failed (ignored)\n"); } } static void uslcom_set_rts(struct ucom_softc *ucom, uint8_t onoff) { struct uslcom_softc *sc = ucom->sc_parent; struct usb_device_request req; uint16_t ctl; DPRINTF("onoff = %d\n", onoff); ctl = onoff ? USLCOM_CTRL_RTS_ON : 0; ctl |= USLCOM_CTRL_RTS_SET; req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_CTRL; USETW(req.wValue, ctl); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("Setting DTR failed (ignored)\n"); } } static int uslcom_pre_param(struct ucom_softc *ucom, struct termios *t) { if (t->c_ospeed <= 0 || t->c_ospeed > 921600) return (EINVAL); return (0); } static void uslcom_param(struct ucom_softc *ucom, struct termios *t) { struct uslcom_softc *sc = ucom->sc_parent; struct usb_device_request req; uint32_t flowctrl[4]; uint16_t data; DPRINTF("\n"); req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_BAUD_RATE; USETW(req.wValue, USLCOM_BAUD_REF / t->c_ospeed); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("Set baudrate failed (ignored)\n"); } if (t->c_cflag & CSTOPB) data = USLCOM_STOP_BITS_2; else data = USLCOM_STOP_BITS_1; if (t->c_cflag & PARENB) { if (t->c_cflag & PARODD) data |= USLCOM_PARITY_ODD; else data |= USLCOM_PARITY_EVEN; } else data |= USLCOM_PARITY_NONE; switch (t->c_cflag & CSIZE) { case CS5: data |= USLCOM_SET_DATA_BITS(5); break; case CS6: data |= USLCOM_SET_DATA_BITS(6); break; case CS7: data |= USLCOM_SET_DATA_BITS(7); break; case CS8: data |= USLCOM_SET_DATA_BITS(8); break; } req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_DATA; USETW(req.wValue, data); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("Set format failed (ignored)\n"); } if (t->c_cflag & CRTSCTS) { flowctrl[0] = htole32(USLCOM_FLOW_DTR_ON | USLCOM_FLOW_CTS_HS); flowctrl[1] = htole32(USLCOM_FLOW_RTS_HS); flowctrl[2] = 0; flowctrl[3] = 0; } else { flowctrl[0] = htole32(USLCOM_FLOW_DTR_ON); flowctrl[1] = htole32(USLCOM_FLOW_RTS_ON); flowctrl[2] = 0; flowctrl[3] = 0; } req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_SET_FLOWCTRL; USETW(req.wValue, 0); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, sizeof(flowctrl)); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, flowctrl, 0, 1000)) { DPRINTF("Set flowcontrol failed (ignored)\n"); } } static void uslcom_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr) { struct uslcom_softc *sc = ucom->sc_parent; DPRINTF("\n"); *lsr = sc->sc_lsr; *msr = sc->sc_msr; } static void uslcom_set_break(struct ucom_softc *ucom, uint8_t onoff) { struct uslcom_softc *sc = ucom->sc_parent; struct usb_device_request req; uint16_t brk = onoff ? USLCOM_BREAK_ON : USLCOM_BREAK_OFF; req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_BREAK; USETW(req.wValue, brk); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("Set BREAK failed (ignored)\n"); } } static int uslcom_ioctl(struct ucom_softc *ucom, uint32_t cmd, caddr_t data, int flag, struct thread *td) { struct uslcom_softc *sc = ucom->sc_parent; struct usb_device_request req; int error = 0; uint8_t latch; DPRINTF("cmd=0x%08x\n", cmd); switch (cmd) { case USB_GET_GPIO: req.bmRequestType = USLCOM_READ; req.bRequest = USLCOM_VENDOR_SPECIFIC; USETW(req.wValue, USLCOM_READ_LATCH); USETW(req.wIndex, 0); USETW(req.wLength, sizeof(latch)); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, &latch, 0, 1000)) { DPRINTF("Get LATCH failed\n"); error = EIO; } *(int *)data = latch; break; case USB_SET_GPIO: req.bmRequestType = USLCOM_WRITE; req.bRequest = USLCOM_VENDOR_SPECIFIC; USETW(req.wValue, USLCOM_WRITE_LATCH); USETW(req.wIndex, (*(int *)data)); USETW(req.wLength, 0); if (ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, &req, NULL, 0, 1000)) { DPRINTF("Set LATCH failed\n"); error = EIO; } break; default: DPRINTF("Unknown IOCTL\n"); error = ENOIOCTL; break; } return (error); } static void uslcom_write_callback(struct usb_xfer *xfer, usb_error_t error) { struct uslcom_softc *sc = usbd_xfer_softc(xfer); struct usb_page_cache *pc; uint32_t actlen; switch (USB_GET_STATE(xfer)) { case USB_ST_SETUP: case USB_ST_TRANSFERRED: tr_setup: pc = usbd_xfer_get_frame(xfer, 0); if (ucom_get_data(&sc->sc_ucom, pc, 0, USLCOM_BULK_BUF_SIZE, &actlen)) { DPRINTF("actlen = %d\n", actlen); usbd_xfer_set_frame_len(xfer, 0, actlen); usbd_transfer_submit(xfer); } return; default: /* Error */ if (error != USB_ERR_CANCELLED) { /* try to clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } return; } } static void uslcom_read_callback(struct usb_xfer *xfer, usb_error_t error) { struct uslcom_softc *sc = usbd_xfer_softc(xfer); struct usb_page_cache *pc; int actlen; usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: pc = usbd_xfer_get_frame(xfer, 0); ucom_put_data(&sc->sc_ucom, pc, 0, actlen); case USB_ST_SETUP: tr_setup: usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); usbd_transfer_submit(xfer); return; default: /* Error */ if (error != USB_ERR_CANCELLED) { /* try to clear stall first */ usbd_xfer_set_stall(xfer); goto tr_setup; } return; } } static void uslcom_control_callback(struct usb_xfer *xfer, usb_error_t error) { struct uslcom_softc *sc = usbd_xfer_softc(xfer); struct usb_page_cache *pc; struct usb_device_request req; uint8_t msr = 0; uint8_t buf; switch (USB_GET_STATE(xfer)) { case USB_ST_TRANSFERRED: pc = usbd_xfer_get_frame(xfer, 1); usbd_copy_out(pc, 0, &buf, sizeof(buf)); if (buf & USLCOM_CTRL_CTS) msr |= SER_CTS; if (buf & USLCOM_CTRL_DSR) msr |= SER_DSR; if (buf & USLCOM_CTRL_RI) msr |= SER_RI; if (buf & USLCOM_CTRL_DCD) msr |= SER_DCD; if (msr != sc->sc_msr) { DPRINTF("status change msr=0x%02x " "(was 0x%02x)\n", msr, sc->sc_msr); sc->sc_msr = msr; ucom_status_change(&sc->sc_ucom); } break; case USB_ST_SETUP: req.bmRequestType = USLCOM_READ; req.bRequest = USLCOM_RCTRL; USETW(req.wValue, 0); USETW(req.wIndex, USLCOM_PORT_NO); USETW(req.wLength, sizeof(buf)); usbd_xfer_set_frames(xfer, 2); usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); usbd_xfer_set_frame_len(xfer, 1, sizeof(buf)); pc = usbd_xfer_get_frame(xfer, 0); usbd_copy_in(pc, 0, &req, sizeof(req)); usbd_transfer_submit(xfer); break; default: /* error */ if (error != USB_ERR_CANCELLED) DPRINTF("error=%s\n", usbd_errstr(error)); break; } } static void uslcom_start_read(struct ucom_softc *ucom) { struct uslcom_softc *sc = ucom->sc_parent; /* start read endpoint */ usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_RD]); } static void uslcom_stop_read(struct ucom_softc *ucom) { struct uslcom_softc *sc = ucom->sc_parent; /* stop read endpoint */ usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_RD]); } static void uslcom_start_write(struct ucom_softc *ucom) { struct uslcom_softc *sc = ucom->sc_parent; usbd_transfer_start(sc->sc_xfer[USLCOM_BULK_DT_WR]); } static void uslcom_stop_write(struct ucom_softc *ucom) { struct uslcom_softc *sc = ucom->sc_parent; usbd_transfer_stop(sc->sc_xfer[USLCOM_BULK_DT_WR]); } static void uslcom_poll(struct ucom_softc *ucom) { struct uslcom_softc *sc = ucom->sc_parent; usbd_transfer_poll(sc->sc_xfer, USLCOM_N_TRANSFER); }