/*- * Copyright (c) 2003 Scott Long * 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. * * $FreeBSD: src/sys/dev/usb/umct.c,v 1.5 2003/11/16 12:13:39 akiyama Exp $ * $DragonFly: src/sys/dev/usbmisc/umct/umct.c,v 1.3 2004/03/15 02:27:57 dillon Exp $ */ /* * Driver for the MCT (Magic Control Technology) USB-RS232 Converter. * Based on the superb documentation from the linux mct_u232 driver by * Wolfgang Grandeggar . * This device smells a lot like the Belkin F5U103, except that it has * suffered some mild brain-damage. This driver is based off of the ubsa.c * driver from Alexander Kabaev . Merging the two together * might be useful, though the subtle differences might lead to lots of * #ifdef's. */ #include #include #include #include #include #include #include #include #include #include #include #include /* The UMCT advertises the standard 8250 UART registers */ #define UMCT_GET_MSR 2 /* Get Modem Status Register */ #define UMCT_GET_MSR_SIZE 1 #define UMCT_GET_LCR 6 /* Get Line Control Register */ #define UMCT_GET_LCR_SIZE 1 #define UMCT_SET_BAUD 5 /* Set the Baud Rate Divisor */ #define UMCT_SET_BAUD_SIZE 4 #define UMCT_SET_LCR 7 /* Set Line Control Register */ #define UMCT_SET_LCR_SIZE 1 #define UMCT_SET_MCR 10 /* Set Modem Control Register */ #define UMCT_SET_MCR_SIZE 1 #define UMCT_INTR_INTERVAL 100 #define UMCT_IFACE_INDEX 0 #define UMCT_CONFIG_INDEX 1 struct umct_softc { struct ucom_softc sc_ucom; int sc_iface_number; usbd_interface_handle sc_intr_iface; int sc_intr_number; usbd_pipe_handle sc_intr_pipe; u_char *sc_intr_buf; int sc_isize; uint8_t sc_lsr; uint8_t sc_msr; uint8_t sc_lcr; uint8_t sc_mcr; void *sc_swicookie; }; Static void umct_intr(usbd_xfer_handle, usbd_private_handle, usbd_status); Static void umct_get_status(void *, int, u_char *, u_char *); Static void umct_set(void *, int, int, int); Static int umct_param(void *, int, struct termios *); Static int umct_open(void *, int); Static void umct_close(void *, int); Static void umct_notify(void *); Static struct ucom_callback umct_callback = { umct_get_status, /* ucom_get_status */ umct_set, /* ucom_set */ umct_param, /* ucom_param */ NULL, /* ucom_ioctl */ umct_open, /* ucom_open */ umct_close, /* ucom_close */ NULL, /* ucom_read */ NULL /* ucom_write */ }; Static const struct umct_product { uint16_t vendor; uint16_t product; } umct_products[] = { { USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232 }, { USB_VENDOR_MCT, USB_PRODUCT_MCT_SITECOM_USB232 }, { USB_VENDOR_MCT, USB_PRODUCT_MCT_DU_H3SP_USB232 }, { USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F5U109 }, { 0, 0 } }; Static device_probe_t umct_match; Static device_attach_t umct_attach; Static device_detach_t umct_detach; Static device_method_t umct_methods[] = { DEVMETHOD(device_probe, umct_match), DEVMETHOD(device_attach, umct_attach), DEVMETHOD(device_detach, umct_detach), { 0, 0 } }; Static driver_t umct_driver = { "ucom", umct_methods, sizeof(struct umct_softc) }; DRIVER_MODULE(umct, uhub, umct_driver, ucom_devclass, usbd_driver_load, 0); MODULE_DEPEND(umct, usb, 1, 1, 1); MODULE_DEPEND(umct, ucom, UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER); MODULE_VERSION(umct, 1); Static struct ithd *umct_ithd; USB_MATCH(umct) { USB_MATCH_START(umct, uaa); int i; if (uaa->iface != NULL) return (UMATCH_NONE); for (i = 0; umct_products[i].vendor != 0; i++) { if (umct_products[i].vendor == uaa->vendor && umct_products[i].product == uaa->product) { return (UMATCH_VENDOR_PRODUCT); } } return (UMATCH_NONE); } USB_ATTACH(umct) { USB_ATTACH_START(umct, sc, uaa); usbd_device_handle dev; struct ucom_softc *ucom; usb_config_descriptor_t *cdesc; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; char *devinfo; const char *devname; usbd_status err; int i; dev = uaa->device; devinfo = malloc(1024, M_USBDEV, M_INTWAIT | M_ZERO); bzero(sc, sizeof(struct umct_softc)); ucom = &sc->sc_ucom; ucom->sc_dev = self; ucom->sc_udev = dev; ucom->sc_iface = uaa->iface; usbd_devinfo(dev, 0, devinfo); device_set_desc_copy(self, devinfo); devname = USBDEVNAME(ucom->sc_dev); printf("%s: %s\n", devname, devinfo); ucom->sc_bulkout_no = -1; ucom->sc_bulkin_no = -1; sc->sc_intr_number = -1; sc->sc_intr_pipe = NULL; err = usbd_set_config_index(dev, UMCT_CONFIG_INDEX, 1); if (err) { printf("%s: failed to set configuration: %s\n", devname, usbd_errstr(err)); ucom->sc_dying = 1; goto error; } cdesc = usbd_get_config_descriptor(ucom->sc_udev); if (cdesc == NULL) { printf("%s: failed to get configuration descriptor\n", devname); ucom->sc_dying = 1; goto error; } err = usbd_device2interface_handle(dev, UMCT_IFACE_INDEX, &ucom->sc_iface); if (err) { printf("%s: failed to get interface: %s\n", devname, usbd_errstr(err)); ucom->sc_dying = 1; goto error; } id = usbd_get_interface_descriptor(ucom->sc_iface); sc->sc_iface_number = id->bInterfaceNumber; for (i = 0; i < id->bNumEndpoints; i++) { ed = usbd_interface2endpoint_descriptor(ucom->sc_iface, i); if (ed == NULL) { printf("%s: no endpoint descriptor for %d\n", devname, i); ucom->sc_dying = 1; goto error; } /* * The real bulk-in endpoint is also marked as an interrupt. * The only way to differentiate it from the real interrupt * endpoint is to look at the wMaxPacketSize field. */ if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN) { if (UGETW(ed->wMaxPacketSize) == 0x2) { sc->sc_intr_number = ed->bEndpointAddress; sc->sc_isize = UGETW(ed->wMaxPacketSize); } else { ucom->sc_bulkin_no = ed->bEndpointAddress; ucom->sc_ibufsize = UGETW(ed->wMaxPacketSize); } continue; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT) { ucom->sc_bulkout_no = ed->bEndpointAddress; if (uaa->product == USB_PRODUCT_MCT_SITECOM_USB232) ucom->sc_obufsize = 16; /* device is broken */ else ucom->sc_obufsize = UGETW(ed->wMaxPacketSize); continue; } printf("%s: warning - unsupported endpoint 0x%x\n", devname, ed->bEndpointAddress); } if (sc->sc_intr_number == -1) { printf("%s: Could not fint interrupt in\n", devname); ucom->sc_dying = 1; goto error; } sc->sc_intr_iface = ucom->sc_iface; if (ucom->sc_bulkout_no == -1) { printf("%s: Could not find data bulk out\n", devname); ucom->sc_dying = 1; goto error; } ucom->sc_parent = sc; ucom->sc_portno = UCOM_UNK_PORTNO; ucom->sc_opkthdrlen = 0; ucom->sc_callback = &umct_callback; ucom_attach(ucom); swi_add(&umct_ithd, "ucom", umct_notify, sc, SWI_TTY, 0, &sc->sc_swicookie); free(devinfo, M_USBDEV); USB_ATTACH_SUCCESS_RETURN; error: free(devinfo, M_USBDEV); USB_ATTACH_ERROR_RETURN; } USB_DETACH(umct) { USB_DETACH_START(umct, sc); int rv; if (sc->sc_intr_pipe != NULL) { usbd_abort_pipe(sc->sc_intr_pipe); usbd_close_pipe(sc->sc_intr_pipe); free(sc->sc_intr_buf, M_USBDEV); sc->sc_intr_pipe = NULL; } sc->sc_ucom.sc_dying = 1; ithread_remove_handler(sc->sc_swicookie); rv = ucom_detach(&sc->sc_ucom); return (rv); } Static int umct_request(struct umct_softc *sc, uint8_t request, int len, uint32_t value) { usb_device_request_t req; usbd_status err; uint8_t oval[4]; req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = request; USETW(req.wValue, 0); USETW(req.wIndex, sc->sc_iface_number); USETW(req.wLength, len); USETDW(oval, value); err = usbd_do_request(sc->sc_ucom.sc_udev, &req, oval); if (err) printf("%s: ubsa_request: %s\n", USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err)); return (err); } Static void umct_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) { struct umct_softc *sc; u_char *buf; sc = (struct umct_softc *)priv; buf = sc->sc_intr_buf; if (sc->sc_ucom.sc_dying) return; if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) return; usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); return; } sc->sc_msr = buf[0]; sc->sc_lsr = buf[1]; /* * Defer notifying the ucom layer as it doesn't like to be bothered * from an interrupt context. */ swi_sched(sc->sc_swicookie, 0); } Static void umct_notify(void *arg) { struct umct_softc *sc; sc = (struct umct_softc *)arg; if (sc->sc_ucom.sc_dying == 0) ucom_status_change(&sc->sc_ucom); } Static void umct_get_status(void *addr, int portno, u_char *lsr, u_char *msr) { struct umct_softc *sc; sc = addr; if (lsr != NULL) *lsr = sc->sc_lsr; if (msr != NULL) *msr = sc->sc_msr; return; } Static void umct_set(void *addr, int portno, int reg, int onoff) { struct umct_softc *sc; sc = addr; switch (reg) { case UCOM_SET_BREAK: sc->sc_lcr &= ~0x40; sc->sc_lcr |= (onoff) ? 0x40 : 0; umct_request(sc, UMCT_SET_LCR, UMCT_SET_LCR_SIZE, sc->sc_lcr); break; case UCOM_SET_DTR: sc->sc_mcr &= ~0x01; sc->sc_mcr |= (onoff) ? 0x01 : 0; umct_request(sc, UMCT_SET_MCR, UMCT_SET_MCR_SIZE, sc->sc_mcr); break; case UCOM_SET_RTS: sc->sc_mcr &= ~0x2; sc->sc_mcr |= (onoff) ? 0x02 : 0; umct_request(sc, UMCT_SET_MCR, UMCT_SET_MCR_SIZE, sc->sc_mcr); break; default: break; } } Static int umct_calc_baud(u_int baud) { switch(baud) { case B300: return (0x1); case B600: return (0x2); case B1200: return (0x3); case B2400: return (0x4); case B4800: return (0x6); case B9600: return (0x8); case B19200: return (0x9); case B38400: return (0xa); case B57600: return (0xb); case 115200: return (0xc); case B0: default: break; } return (0x0); } Static int umct_param(void *addr, int portno, struct termios *ti) { struct umct_softc *sc; uint32_t value; sc = addr; value = umct_calc_baud(ti->c_ospeed); umct_request(sc, UMCT_SET_BAUD, UMCT_SET_BAUD_SIZE, value); value = sc->sc_lcr & 0x40; switch (ti->c_cflag & CSIZE) { case CS5: value |= 0x0; break; case CS6: value |= 0x1; break; case CS7: value |= 0x2; break; case CS8: value |= 0x3; break; default: value |= 0x0; break; } value |= (ti->c_cflag & CSTOPB) ? 0x4 : 0; if (ti->c_cflag & PARENB) { value |= 0x8; value |= (ti->c_cflag & PARODD) ? 0x0 : 0x10; } /* * XXX There doesn't seem to be a way to tell the device to use flow * control. */ sc->sc_lcr = value; umct_request(sc, UMCT_SET_LCR, UMCT_SET_LCR_SIZE, value); return (0); } Static int umct_open(void *addr, int portno) { struct umct_softc *sc; int err; sc = addr; if (sc->sc_ucom.sc_dying) { return (ENXIO); } if (sc->sc_intr_number != -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_intr_iface, sc->sc_intr_number, USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, sc->sc_intr_buf, sc->sc_isize, umct_intr, UMCT_INTR_INTERVAL); if (err) { printf("%s: cannot open interrupt pipe (addr %d)\n", USBDEVNAME(sc->sc_ucom.sc_dev), sc->sc_intr_number); free(sc->sc_intr_buf, M_USBDEV); return (EIO); } } return (0); } Static void umct_close(void *addr, int portno) { struct umct_softc *sc; int err; sc = addr; if (sc->sc_ucom.sc_dying) return; if (sc->sc_intr_pipe != NULL) { err = usbd_abort_pipe(sc->sc_intr_pipe); if (err) printf("%s: abort interrupt pipe failed: %s\n", USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err)); err = usbd_close_pipe(sc->sc_intr_pipe); if (err) printf("%s: close interrupt pipe failed: %s\n", USBDEVNAME(sc->sc_ucom.sc_dev), usbd_errstr(err)); free(sc->sc_intr_buf, M_USBDEV); sc->sc_intr_pipe = NULL; } }