Attachment 190666 Details for Bug 225932 – modified file for easier review

modified file for easier review

uplcom.c (text/plain), 30.54 KB, created by Gabor Simon on 2018-02-15 19:54:14 UTC

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Creator: Gabor Simon

Created: 2018-02-15 19:54:14 UTC

Size: 30.54 KB

patch

obsolete

>/*	$NetBSD: uplcom.c,v 1.21 2001/11/13 06:24:56 lukem Exp $	*/
>
>#include <sys/cdefs.h>
>__FBSDID("$FreeBSD: releng/11.1/sys/dev/usb/serial/uplcom.c 314501 2017-03-01 18:23:30Z ian $");
>
>/*-
> * Copyright (c) 2001-2003, 2005 Shunsuke Akiyama <akiyama@jp.FreeBSD.org>.
> * 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) 2001 The NetBSD Foundation, Inc.
> * All rights reserved.
> *
> * This code is derived from software contributed to The NetBSD Foundation
> * by Ichiro FUKUHARA (ichiro@ichiro.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.
> */
>
>/*
> * This driver supports several USB-to-RS232 serial adapters driven by
> * Prolific PL-2303, PL-2303X and probably PL-2303HX USB-to-RS232
> * bridge chip.  The adapters are sold under many different brand
> * names.
> *
> * Datasheets are available at Prolific www site at
> * http://www.prolific.com.tw.  The datasheets don't contain full
> * programming information for the chip.
> *
> * PL-2303HX is probably programmed the same as PL-2303X.
> *
> * There are several differences between PL-2303 and PL-2303(H)X.
> * PL-2303(H)X can do higher bitrate in bulk mode, has _probably_
> * different command for controlling CRTSCTS and needs special
> * sequence of commands for initialization which aren't also
> * documented in the datasheet.
> */
>
>#include <sys/stdint.h>
>#include <sys/stddef.h>
>#include <sys/param.h>
>#include <sys/queue.h>
>#include <sys/types.h>
>#include <sys/systm.h>
>#include <sys/kernel.h>
>#include <sys/bus.h>
>#include <sys/module.h>
>#include <sys/lock.h>
>#include <sys/mutex.h>
>#include <sys/condvar.h>
>#include <sys/sysctl.h>
>#include <sys/sx.h>
>#include <sys/unistd.h>
>#include <sys/callout.h>
>#include <sys/malloc.h>
>#include <sys/priv.h>
>
>#include <dev/usb/usb.h>
>#include <dev/usb/usbdi.h>
>#include <dev/usb/usbdi_util.h>
>#include <dev/usb/usb_cdc.h>
>#include "usbdevs.h"
>
>#define	USB_DEBUG_VAR uplcom_debug
>#include <dev/usb/usb_debug.h>
>#include <dev/usb/usb_process.h>
>
>#include <dev/usb/serial/usb_serial.h>
>
>#ifdef USB_DEBUG
>static int uplcom_debug = 0;
>
>static SYSCTL_NODE(_hw_usb, OID_AUTO, uplcom, CTLFLAG_RW, 0, "USB uplcom");
>SYSCTL_INT(_hw_usb_uplcom, OID_AUTO, debug, CTLFLAG_RWTUN,
>    &uplcom_debug, 0, "Debug level");
>#endif
>
>#define	UPLCOM_MODVER			1	/* module version */
>
>#define	UPLCOM_CONFIG_INDEX		0
>#define	UPLCOM_IFACE_INDEX		0
>#define	UPLCOM_SECOND_IFACE_INDEX	1
>
>#ifndef UPLCOM_INTR_INTERVAL
>#define	UPLCOM_INTR_INTERVAL		0	/* default */
>#endif
>
>#define	UPLCOM_BULK_BUF_SIZE 1024	/* bytes */
>
>#define	UPLCOM_SET_REQUEST		0x01
>#define	UPLCOM_SET_CRTSCTS		0x41
>#define	UPLCOM_SET_CRTSCTS_PL2303X	0x61
>#define	RSAQ_STATUS_CTS			0x80
>#define	RSAQ_STATUS_OVERRUN_ERROR	0x40
>#define	RSAQ_STATUS_PARITY_ERROR	0x20 
>#define	RSAQ_STATUS_FRAME_ERROR	0x10
>#define	RSAQ_STATUS_RING		0x08
>#define	RSAQ_STATUS_BREAK_ERROR	0x04
>#define	RSAQ_STATUS_DSR			0x02
>#define	RSAQ_STATUS_DCD			0x01
>
>#define	TYPE_PL2303			0
>#define	TYPE_PL2303HX			1
>#define	TYPE_PL2303HXD			2
>
>#define	UPLCOM_STATE_INDEX		8
>
>enum {
>	UPLCOM_BULK_DT_WR,
>	UPLCOM_BULK_DT_RD,
>	UPLCOM_INTR_DT_RD,
>	UPLCOM_N_TRANSFER,
>};
>
>struct uplcom_softc {
>	struct ucom_super_softc sc_super_ucom;
>	struct ucom_softc sc_ucom;
>
>	struct usb_xfer *sc_xfer[UPLCOM_N_TRANSFER];
>	struct usb_device *sc_udev;
>	struct mtx sc_mtx;
>
>	uint16_t sc_line;
>
>	uint8_t	sc_lsr;			/* local status register */
>	uint8_t	sc_msr;			/* uplcom status register */
>	uint8_t	sc_chiptype;		/* type of chip */
>	uint8_t	sc_ctrl_iface_no;
>	uint8_t	sc_data_iface_no;
>	uint8_t	sc_iface_index[2];
>};
>
>/* prototypes */
>
>static usb_error_t uplcom_reset(struct uplcom_softc *, struct usb_device *);
>static usb_error_t uplcom_pl2303_do(struct usb_device *, uint8_t, uint8_t,
>			uint16_t, uint16_t, uint16_t);
>static int	uplcom_pl2303_init(struct usb_device *, uint8_t);
>static void	uplcom_free(struct ucom_softc *);
>static void	uplcom_cfg_set_dtr(struct ucom_softc *, uint8_t);
>static void	uplcom_cfg_set_rts(struct ucom_softc *, uint8_t);
>static void	uplcom_cfg_set_break(struct ucom_softc *, uint8_t);
>static int	uplcom_pre_param(struct ucom_softc *, struct termios *);
>static void	uplcom_cfg_param(struct ucom_softc *, struct termios *);
>static void	uplcom_start_read(struct ucom_softc *);
>static void	uplcom_stop_read(struct ucom_softc *);
>static void	uplcom_start_write(struct ucom_softc *);
>static void	uplcom_stop_write(struct ucom_softc *);
>static void	uplcom_cfg_get_status(struct ucom_softc *, uint8_t *,
>		    uint8_t *);
>static void	uplcom_poll(struct ucom_softc *ucom);
>
>static device_probe_t uplcom_probe;
>static device_attach_t uplcom_attach;
>static device_detach_t uplcom_detach;
>static void uplcom_free_softc(struct uplcom_softc *);
>
>static usb_callback_t uplcom_intr_callback;
>static usb_callback_t uplcom_write_callback;
>static usb_callback_t uplcom_read_callback;
>
>static const struct usb_config uplcom_config_data[UPLCOM_N_TRANSFER] = {
>
>	[UPLCOM_BULK_DT_WR] = {
>		.type = UE_BULK,
>		.endpoint = UE_ADDR_ANY,
>		.direction = UE_DIR_OUT,
>		.bufsize = UPLCOM_BULK_BUF_SIZE,
>		.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
>		.callback = &uplcom_write_callback,
>		.if_index = 0,
>	},
>
>	[UPLCOM_BULK_DT_RD] = {
>		.type = UE_BULK,
>		.endpoint = UE_ADDR_ANY,
>		.direction = UE_DIR_IN,
>		.bufsize = UPLCOM_BULK_BUF_SIZE,
>		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
>		.callback = &uplcom_read_callback,
>		.if_index = 0,
>	},
>
>	[UPLCOM_INTR_DT_RD] = {
>		.type = UE_INTERRUPT,
>		.endpoint = UE_ADDR_ANY,
>		.direction = UE_DIR_IN,
>		.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
>		.bufsize = 0,	/* use wMaxPacketSize */
>		.callback = &uplcom_intr_callback,
>		.if_index = 1,
>	},
>};
>
>static struct ucom_callback uplcom_callback = {
>	.ucom_cfg_get_status = &uplcom_cfg_get_status,
>	.ucom_cfg_set_dtr = &uplcom_cfg_set_dtr,
>	.ucom_cfg_set_rts = &uplcom_cfg_set_rts,
>	.ucom_cfg_set_break = &uplcom_cfg_set_break,
>	.ucom_cfg_param = &uplcom_cfg_param,
>	.ucom_pre_param = &uplcom_pre_param,
>	.ucom_start_read = &uplcom_start_read,
>	.ucom_stop_read = &uplcom_stop_read,
>	.ucom_start_write = &uplcom_start_write,
>	.ucom_stop_write = &uplcom_stop_write,
>	.ucom_poll = &uplcom_poll,
>	.ucom_free = &uplcom_free,
>};
>
>#define	UPLCOM_DEV(v,p)				\
>  { USB_VENDOR(USB_VENDOR_##v), USB_PRODUCT(USB_PRODUCT_##v##_##p) }
>
>static const STRUCT_USB_HOST_ID uplcom_devs[] = {
>	UPLCOM_DEV(ACERP, S81),			/* BenQ S81 phone */
>	UPLCOM_DEV(ADLINK, ND6530),		/* ADLINK ND-6530 USB-Serial */
>	UPLCOM_DEV(ALCATEL, OT535),		/* Alcatel One Touch 535/735 */
>	UPLCOM_DEV(ALCOR, AU9720),		/* Alcor AU9720 USB 2.0-RS232 */
>	UPLCOM_DEV(ANCHOR, SERIAL),		/* Anchor Serial adapter */
>	UPLCOM_DEV(ATEN, UC232A),		/* PLANEX USB-RS232 URS-03 */
>	UPLCOM_DEV(BELKIN, F5U257),		/* Belkin F5U257 USB to Serial */
>	UPLCOM_DEV(COREGA, CGUSBRS232R),	/* Corega CG-USBRS232R */
>	UPLCOM_DEV(EPSON, CRESSI_EDY),		/* Cressi Edy diving computer */
>	UPLCOM_DEV(EPSON, N2ITION3),		/* Zeagle N2iTion3 diving computer */
>	UPLCOM_DEV(ELECOM, UCSGT),		/* ELECOM UC-SGT Serial Adapter */
>	UPLCOM_DEV(ELECOM, UCSGT0),		/* ELECOM UC-SGT Serial Adapter */
>	UPLCOM_DEV(HAL, IMR001),		/* HAL Corporation Crossam2+USB */
>	UPLCOM_DEV(HP, LD220),			/* HP LD220 POS Display */
>	UPLCOM_DEV(IODATA, USBRSAQ),		/* I/O DATA USB-RSAQ */
>	UPLCOM_DEV(IODATA, USBRSAQ5),		/* I/O DATA USB-RSAQ5 */
>	UPLCOM_DEV(ITEGNO, WM1080A),		/* iTegno WM1080A GSM/GFPRS modem */
>	UPLCOM_DEV(ITEGNO, WM2080A),		/* iTegno WM2080A CDMA modem */
>	UPLCOM_DEV(LEADTEK, 9531),		/* Leadtek 9531 GPS */
>	UPLCOM_DEV(MICROSOFT, 700WX),		/* Microsoft Palm 700WX */
>	UPLCOM_DEV(MOBILEACTION, MA620),	/* Mobile Action MA-620 Infrared Adapter */
>	UPLCOM_DEV(NETINDEX, WS002IN),		/* Willcom W-S002IN */
>	UPLCOM_DEV(NOKIA2, CA42),		/* Nokia CA-42 cable */
>	UPLCOM_DEV(OTI, DKU5),			/* OTI DKU-5 cable */
>	UPLCOM_DEV(PANASONIC, TYTP50P6S),	/* Panasonic TY-TP50P6-S flat screen */
>	UPLCOM_DEV(PLX, CA42),			/* PLX CA-42 clone cable */
>	UPLCOM_DEV(PROLIFIC, ALLTRONIX_GPRS),	/* Alltronix ACM003U00 modem */
>	UPLCOM_DEV(PROLIFIC, ALDIGA_AL11U),	/* AlDiga AL-11U modem */
>	UPLCOM_DEV(PROLIFIC, DCU11),		/* DCU-11 Phone Cable */
>	UPLCOM_DEV(PROLIFIC, HCR331),		/* HCR331 Card Reader */
>	UPLCOM_DEV(PROLIFIC, MICROMAX_610U),	/* Micromax 610U modem */
>	UPLCOM_DEV(PROLIFIC, MOTOROLA),		/* Motorola cable */
>	UPLCOM_DEV(PROLIFIC, PHAROS),		/* Prolific Pharos */
>	UPLCOM_DEV(PROLIFIC, PL2303),		/* Generic adapter */
>	UPLCOM_DEV(PROLIFIC, RSAQ2),		/* I/O DATA USB-RSAQ2 */
>	UPLCOM_DEV(PROLIFIC, RSAQ3),		/* I/O DATA USB-RSAQ3 */
>	UPLCOM_DEV(PROLIFIC, UIC_MSR206),	/* UIC MSR206 Card Reader */
>	UPLCOM_DEV(PROLIFIC2, PL2303),		/* Prolific adapter */
>	UPLCOM_DEV(RADIOSHACK, USBCABLE),	/* Radio Shack USB Adapter */
>	UPLCOM_DEV(RATOC, REXUSB60),		/* RATOC REX-USB60 */
>	UPLCOM_DEV(SAGEM, USBSERIAL),		/* Sagem USB-Serial Controller */
>	UPLCOM_DEV(SAMSUNG, I330),		/* Samsung I330 phone cradle */
>	UPLCOM_DEV(SANWA, KB_USB2),		/* Sanwa KB-USB2 Multimeter cable */
>	UPLCOM_DEV(SIEMENS3, EF81),		/* Siemens EF81 */
>	UPLCOM_DEV(SIEMENS3, SX1),		/* Siemens SX1 */
>	UPLCOM_DEV(SIEMENS3, X65),		/* Siemens X65 */
>	UPLCOM_DEV(SIEMENS3, X75),		/* Siemens X75 */
>	UPLCOM_DEV(SITECOM, SERIAL),		/* Sitecom USB to Serial */
>	UPLCOM_DEV(SMART, PL2303),		/* SMART Technologies USB to Serial */
>	UPLCOM_DEV(SONY, QN3),			/* Sony QN3 phone cable */
>	UPLCOM_DEV(SONYERICSSON, DATAPILOT),	/* Sony Ericsson Datapilot */
>	UPLCOM_DEV(SONYERICSSON, DCU10),	/* Sony Ericsson DCU-10 Cable */
>	UPLCOM_DEV(SOURCENEXT, KEIKAI8),	/* SOURCENEXT KeikaiDenwa 8 */
>	UPLCOM_DEV(SOURCENEXT, KEIKAI8_CHG),	/* SOURCENEXT KeikaiDenwa 8 with charger */
>	UPLCOM_DEV(SPEEDDRAGON, MS3303H),	/* Speed Dragon USB-Serial */
>	UPLCOM_DEV(SYNTECH, CPT8001C),		/* Syntech CPT-8001C Barcode scanner */
>	UPLCOM_DEV(TDK, UHA6400),		/* TDK USB-PHS Adapter UHA6400 */
>	UPLCOM_DEV(TDK, UPA9664),		/* TDK USB-PHS Adapter UPA9664 */
>	UPLCOM_DEV(TRIPPLITE, U209),		/* Tripp-Lite U209-000-R USB to Serial */
>	UPLCOM_DEV(YCCABLE, PL2303),		/* YC Cable USB-Serial */
>};
>#undef UPLCOM_DEV
>
>static device_method_t uplcom_methods[] = {
>	DEVMETHOD(device_probe, uplcom_probe),
>	DEVMETHOD(device_attach, uplcom_attach),
>	DEVMETHOD(device_detach, uplcom_detach),
>	DEVMETHOD_END
>};
>
>static devclass_t uplcom_devclass;
>
>static driver_t uplcom_driver = {
>	.name = "uplcom",
>	.methods = uplcom_methods,
>	.size = sizeof(struct uplcom_softc),
>};
>
>DRIVER_MODULE(uplcom, uhub, uplcom_driver, uplcom_devclass, NULL, 0);
>MODULE_DEPEND(uplcom, ucom, 1, 1, 1);
>MODULE_DEPEND(uplcom, usb, 1, 1, 1);
>MODULE_VERSION(uplcom, UPLCOM_MODVER);
>USB_PNP_HOST_INFO(uplcom_devs);
>
>static int
>uplcom_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 != UPLCOM_CONFIG_INDEX) {
>		return (ENXIO);
>	}
>	if (uaa->info.bIfaceIndex != UPLCOM_IFACE_INDEX) {
>		return (ENXIO);
>	}
>	return (usbd_lookup_id_by_uaa(uplcom_devs, sizeof(uplcom_devs), uaa));
>}
>
>static int
>uplcom_attach(device_t dev)
>{
>	struct usb_attach_arg *uaa = device_get_ivars(dev);
>	struct uplcom_softc *sc = device_get_softc(dev);
>	struct usb_interface *iface;
>	struct usb_interface_descriptor *id;
>	struct usb_device_descriptor *dd;
>	int error;
>
>	DPRINTFN(11, "\n");
>
>	device_set_usb_desc(dev);
>	mtx_init(&sc->sc_mtx, "uplcom", NULL, MTX_DEF);
>	ucom_ref(&sc->sc_super_ucom);
>
>	DPRINTF("sc = %p\n", sc);
>
>	sc->sc_udev = uaa->device;
>
>	dd = usbd_get_device_descriptor(sc->sc_udev);
>
>	switch (dd->bcdDevice[0]) {
>	case 3:
>		sc->sc_chiptype = TYPE_PL2303HX;
>		/* or TA, that is HX with external crystal */
>		break;
>	case 4:
>		sc->sc_chiptype = TYPE_PL2303HXD;
>		/* or EA, that is HXD with ESD protection */
>		/* or RA, that has internal voltage level converter that works only up to 1Mbaud (!) */
>		break;
>	case 5:
>		sc->sc_chiptype = TYPE_PL2303HXD;
>		/* in fact it's TB, that is HXD with external crystal */
>		break;
>	default:
>		/* NOTE: I have no info about the bcdDevice for the base PL2303 (up to 1.2Mbaud,
>		   only fixed rates) and for PL2303SA (8-pin chip, up to 115200 baud */
>		/* Determine the chip type.  This algorithm is taken from Linux. */
>		if (dd->bDeviceClass == 0x02)
>			sc->sc_chiptype = TYPE_PL2303;
>		else if (dd->bMaxPacketSize == 0x40)
>			sc->sc_chiptype = TYPE_PL2303HX;
>		else
>			sc->sc_chiptype = TYPE_PL2303;
>		break;
>	}
>
>	switch (sc->sc_chiptype) {
>		case TYPE_PL2303:
>			DPRINTF("chiptype: 2303\n");
>			break;
>		case TYPE_PL2303HX:
>			DPRINTF("chiptype: 2303HX/TA\n");
>			break;
>		case TYPE_PL2303HXD:
>			DPRINTF("chiptype: 2303HXD/TB/RA/EA\n");
>			break;
>		default:
>			DPRINTF("chiptype: unknown %d\n", sc->sc_chiptype);
>			break;
>	}
>
>	/*
>	 * USB-RSAQ1 has two interface
>	 *
>	 *  USB-RSAQ1       | USB-RSAQ2
>	 * -----------------+-----------------
>	 * Interface 0      |Interface 0
>	 *  Interrupt(0x81) | Interrupt(0x81)
>	 * -----------------+ BulkIN(0x02)
>	 * Interface 1	    | BulkOUT(0x83)
>	 *   BulkIN(0x02)   |
>	 *   BulkOUT(0x83)  |
>	 */
>
>	sc->sc_ctrl_iface_no = uaa->info.bIfaceNum;
>	sc->sc_iface_index[1] = UPLCOM_IFACE_INDEX;
>
>	iface = usbd_get_iface(uaa->device, UPLCOM_SECOND_IFACE_INDEX);
>	if (iface) {
>		id = usbd_get_interface_descriptor(iface);
>		if (id == NULL) {
>			device_printf(dev, "no interface descriptor (2)\n");
>			goto detach;
>		}
>		sc->sc_data_iface_no = id->bInterfaceNumber;
>		sc->sc_iface_index[0] = UPLCOM_SECOND_IFACE_INDEX;
>		usbd_set_parent_iface(uaa->device,
>		    UPLCOM_SECOND_IFACE_INDEX, uaa->info.bIfaceIndex);
>	} else {
>		sc->sc_data_iface_no = sc->sc_ctrl_iface_no;
>		sc->sc_iface_index[0] = UPLCOM_IFACE_INDEX;
>	}
>
>	error = usbd_transfer_setup(uaa->device,
>	    sc->sc_iface_index, sc->sc_xfer, uplcom_config_data,
>	    UPLCOM_N_TRANSFER, sc, &sc->sc_mtx);
>	if (error) {
>		DPRINTF("one or more missing USB endpoints, "
>		    "error=%s\n", usbd_errstr(error));
>		goto detach;
>	}
>	error = uplcom_reset(sc, uaa->device);
>	if (error) {
>		device_printf(dev, "reset failed, error=%s\n",
>		    usbd_errstr(error));
>		goto detach;
>	}
>
>	if (sc->sc_chiptype == TYPE_PL2303) {
>		/* HX variants seem to lock up after a clear stall request. */
>		mtx_lock(&sc->sc_mtx);
>		usbd_xfer_set_stall(sc->sc_xfer[UPLCOM_BULK_DT_WR]);
>		usbd_xfer_set_stall(sc->sc_xfer[UPLCOM_BULK_DT_RD]);
>		mtx_unlock(&sc->sc_mtx);
>	} else {
>		/* reset upstream data pipes */
>		if (uplcom_pl2303_do(sc->sc_udev, UT_WRITE_VENDOR_DEVICE,
>		    UPLCOM_SET_REQUEST, 8, 0, 0) ||
>		    uplcom_pl2303_do(sc->sc_udev, UT_WRITE_VENDOR_DEVICE,
>		    UPLCOM_SET_REQUEST, 9, 0, 0)) {
>			goto detach;
>		}
>	}
>
>	error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
>	    &uplcom_callback, &sc->sc_mtx);
>	if (error) {
>		goto detach;
>	}
>	/*
>	 * do the initialization during attach so that the system does not
>	 * sleep during open:
>	 */
>	if (uplcom_pl2303_init(uaa->device, sc->sc_chiptype)) {
>		device_printf(dev, "init failed\n");
>		goto detach;
>	}
>	ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
>
>	return (0);
>
>detach:
>	uplcom_detach(dev);
>	return (ENXIO);
>}
>
>static int
>uplcom_detach(device_t dev)
>{
>	struct uplcom_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, UPLCOM_N_TRANSFER);
>
>	device_claim_softc(dev);
>
>	uplcom_free_softc(sc);
>
>	return (0);
>}
>
>UCOM_UNLOAD_DRAIN(uplcom);
>
>static void
>uplcom_free_softc(struct uplcom_softc *sc)
>{
>	if (ucom_unref(&sc->sc_super_ucom)) {
>		mtx_destroy(&sc->sc_mtx);
>		device_free_softc(sc);
>	}
>}
>
>static void
>uplcom_free(struct ucom_softc *ucom)
>{
>	uplcom_free_softc(ucom->sc_parent);
>}
>
>static usb_error_t
>uplcom_reset(struct uplcom_softc *sc, struct usb_device *udev)
>{
>	struct usb_device_request req;
>
>	req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
>	req.bRequest = UPLCOM_SET_REQUEST;
>	USETW(req.wValue, 0);
>	req.wIndex[0] = sc->sc_data_iface_no;
>	req.wIndex[1] = 0;
>	USETW(req.wLength, 0);
>
>	return (usbd_do_request(udev, NULL, &req, NULL));
>}
>
>static usb_error_t
>uplcom_pl2303_do(struct usb_device *udev, uint8_t req_type, uint8_t request,
>    uint16_t value, uint16_t index, uint16_t length)
>{
>	struct usb_device_request req;
>	usb_error_t err;
>	uint8_t buf[4];
>
>	req.bmRequestType = req_type;
>	req.bRequest = request;
>	USETW(req.wValue, value);
>	USETW(req.wIndex, index);
>	USETW(req.wLength, length);
>
>	err = usbd_do_request(udev, NULL, &req, buf);
>	if (err) {
>		DPRINTF("error=%s\n", usbd_errstr(err));
>		return (1);
>	}
>	return (0);
>}
>
>static int
>uplcom_pl2303_init(struct usb_device *udev, uint8_t chiptype)
>{
>	int err;
>
>	if (uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
>	    || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x0404, 0, 0)
>	    || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
>	    || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8383, 0, 1)
>	    || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
>	    || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x0404, 1, 0)
>	    || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8484, 0, 1)
>	    || uplcom_pl2303_do(udev, UT_READ_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0x8383, 0, 1)
>	    || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 0, 1, 0)
>	    || uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 1, 0, 0))
>		return (EIO);
>
>	if (chiptype != TYPE_PL2303)
>		err = uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 2, 0x44, 0);
>	else
>		err = uplcom_pl2303_do(udev, UT_WRITE_VENDOR_DEVICE, UPLCOM_SET_REQUEST, 2, 0x24, 0);
>	if (err)
>		return (EIO);
>	
>	return (0);
>}
>
>static void
>uplcom_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>	struct usb_device_request req;
>
>	DPRINTF("onoff = %d\n", onoff);
>
>	if (onoff)
>		sc->sc_line |= UCDC_LINE_DTR;
>	else
>		sc->sc_line &= ~UCDC_LINE_DTR;
>
>	req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
>	req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
>	USETW(req.wValue, sc->sc_line);
>	req.wIndex[0] = sc->sc_data_iface_no;
>	req.wIndex[1] = 0;
>	USETW(req.wLength, 0);
>
>	ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 
>	    &req, NULL, 0, 1000);
>}
>
>static void
>uplcom_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>	struct usb_device_request req;
>
>	DPRINTF("onoff = %d\n", onoff);
>
>	if (onoff)
>		sc->sc_line |= UCDC_LINE_RTS;
>	else
>		sc->sc_line &= ~UCDC_LINE_RTS;
>
>	req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
>	req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
>	USETW(req.wValue, sc->sc_line);
>	req.wIndex[0] = sc->sc_data_iface_no;
>	req.wIndex[1] = 0;
>	USETW(req.wLength, 0);
>
>	ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 
>	    &req, NULL, 0, 1000);
>}
>
>static void
>uplcom_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>	struct usb_device_request req;
>	uint16_t temp;
>
>	DPRINTF("onoff = %d\n", onoff);
>
>	temp = (onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF);
>
>	req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
>	req.bRequest = UCDC_SEND_BREAK;
>	USETW(req.wValue, temp);
>	req.wIndex[0] = sc->sc_data_iface_no;
>	req.wIndex[1] = 0;
>	USETW(req.wLength, 0);
>
>	ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 
>	    &req, NULL, 0, 1000);
>}
>
>/*
> * NOTE: These baud rates are officially supported, they can be written
> * directly into dwDTERate register.
> *
> * Free baudrate setting is not supported by the base PL2303, and on
> * other models it requires writing a divisor value to dwDTERate instead
> * of the raw baudrate. The formula for divisor calculation is not published
> * by the vendor, so it is speculative, though the official product homepage
> * refers to the Linux module source as a reference implementation.
> */
>static const uint32_t uplcom_rates[] = {
>	/*
>	 * Basic 'standard' speed rates, supported by all models
>	 * NOTE: 900 and 56000 actually works as well
>	 */
>	75, 150, 300, 600, 900, 1200, 1800, 2400, 3600, 4800, 7200, 9600, 14400,
>	19200, 28800, 38400, 56000, 57600, 115200,
>	/*
>	 * Advanced speed rates up to 6Mbs, supported by HX/TA and HXD/TB/EA/RA
>     * NOTE: regardless of the spec, 256000 does not work
>	 */
>	128000, 134400, 161280, 201600, 230400, 268800, 403200, 460800, 614400,
>	806400, 921600, 1228800, 2457600, 3000000, 6000000,
>	/*
>	 * Advanced speed rates up to 12, supported by HXD/TB/EA/RA
>	 */
>	12000000
>};
>
>#define	N_UPLCOM_RATES	nitems(uplcom_rates)
>
>static int
>uplcom_baud_supported(unsigned int speed)
>{
>	int i;
>	for (i = 0; i < N_UPLCOM_RATES; i++) {
>		if (uplcom_rates[i] == speed)
>			return 1;
>	}
>	return 0;
>}
>
>static int
>uplcom_pre_param(struct ucom_softc *ucom, struct termios *t)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>
>	DPRINTF("\n");
>
>	/**
>	 * Check requested baud rate.
>	 *
>	 * The PL2303 can only set specific baud rates, up to 1228800 baud.
>	 * The PL2303HX can set any baud rate up to 6Mb.
>	 * The PL2303HX rev. D can set any baud rate up to 12Mb.
>	 *
>	 */
>
>	/* accept raw divisor data, if someone wants to do the math in user domain */
>	if (t->c_ospeed & 0x80000000)
>		return 0;
>	switch (sc->sc_chiptype) {
>		case TYPE_PL2303HXD:
>			if (t->c_ospeed <= 12000000)
>				return (0);
>			break;
>		case TYPE_PL2303HX:
>			if (t->c_ospeed <= 6000000)
>				return (0);
>			break;
>		default:
>			if (uplcom_baud_supported(t->c_ospeed))
>				return (0);
>			break;
>	}
>
>	DPRINTF("uplcom_param: bad baud rate (%d)\n", t->c_ospeed);
>	return (EIO);
>}
>
>static unsigned int
>uplcom_encode_baud_rate_divisor(uint8_t *buf, unsigned int baud)
>{
>	unsigned int baseline, mantissa, exponent;
>
>	/* Determine the baud rate divisor. This algorithm is taken from Linux. */
>	/*
>	 * Apparently the formula is:
>	 *   baudrate = baseline / (mantissa * 4^exponent)
>	 * where
>	 *   mantissa = buf[8:0]
>	 *   exponent = buf[11:9]
>	 */
>	if (baud == 0)
>		baud = 1;
>	baseline = 383385600;
>	mantissa = baseline / baud;
>	if (mantissa == 0)
>		mantissa = 1;
>	exponent = 0;
>	while (mantissa >= 512) {
>		if (exponent < 7) {
>			mantissa >>= 2;	/* divide by 4 */
>			exponent++;
>		} else {
>			/* Exponent is maxed. Trim mantissa and leave. This gives approx. 45.8 baud */
>			mantissa = 511;
>			break;
>		}
>	}
>
>	buf[3] = 0x80;
>	buf[2] = 0;
>	buf[1] = exponent << 1 | mantissa >> 8;
>	buf[0] = mantissa & 0xff;
>
>	/* Calculate and return the exact baud rate. */
>	baud = (baseline / mantissa) >> (exponent << 1);
>	DPRINTF("real baud rate will be %u\n", baud);
>
>	return baud;
>}
>static void
>uplcom_cfg_param(struct ucom_softc *ucom, struct termios *t)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>	struct usb_cdc_line_state ls;
>	struct usb_device_request req;
>
>	DPRINTF("sc = %p\n", sc);
>
>	memset(&ls, 0, sizeof(ls));
>
>	/*
>	 * NOTE: If unsupported baud rates are set directly, the PL2303* uses 9600 baud.
>	 */
>	if ((t->c_ospeed & 0x80000000) || uplcom_baud_supported(t->c_ospeed))
>		USETDW(ls.dwDTERate, t->c_ospeed);
>	else
>		t->c_ospeed = uplcom_encode_baud_rate_divisor((uint8_t*)&ls.dwDTERate, t->c_ospeed);
>
>	if (t->c_cflag & CSTOPB) {
>		if ((t->c_cflag & CSIZE) == CS5) {
>			/*
>			 * NOTE: Comply with "real" UARTs / RS232:
>			 *       use 1.5 instead of 2 stop bits with 5 data bits
>			 */
>			ls.bCharFormat = UCDC_STOP_BIT_1_5;
>		} else {
>			ls.bCharFormat = UCDC_STOP_BIT_2;
>		}
>	} else {
>		ls.bCharFormat = UCDC_STOP_BIT_1;
>	}
>
>	if (t->c_cflag & PARENB) {
>		if (t->c_cflag & PARODD) {
>			ls.bParityType = UCDC_PARITY_ODD;
>		} else {
>			ls.bParityType = UCDC_PARITY_EVEN;
>		}
>	} else {
>		ls.bParityType = UCDC_PARITY_NONE;
>	}
>
>	switch (t->c_cflag & CSIZE) {
>	case CS5:
>		ls.bDataBits = 5;
>		break;
>	case CS6:
>		ls.bDataBits = 6;
>		break;
>	case CS7:
>		ls.bDataBits = 7;
>		break;
>	case CS8:
>		ls.bDataBits = 8;
>		break;
>	}
>
>	DPRINTF("rate=0x%08x fmt=%d parity=%d bits=%d\n",
>	    UGETDW(ls.dwDTERate), ls.bCharFormat,
>	    ls.bParityType, ls.bDataBits);
>
>	req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
>	req.bRequest = UCDC_SET_LINE_CODING;
>	USETW(req.wValue, 0);
>	req.wIndex[0] = sc->sc_data_iface_no;
>	req.wIndex[1] = 0;
>	USETW(req.wLength, UCDC_LINE_STATE_LENGTH);
>
>	ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 
>	    &req, &ls, 0, 1000);
>
>	if (t->c_cflag & CRTSCTS) {
>
>		DPRINTF("crtscts = on\n");
>
>		req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
>		req.bRequest = UPLCOM_SET_REQUEST;
>		USETW(req.wValue, 0);
>		if (sc->sc_chiptype != TYPE_PL2303)
>			USETW(req.wIndex, UPLCOM_SET_CRTSCTS_PL2303X);
>		else
>			USETW(req.wIndex, UPLCOM_SET_CRTSCTS);
>		USETW(req.wLength, 0);
>
>		ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 
>		    &req, NULL, 0, 1000);
>	} else {
>		req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
>		req.bRequest = UPLCOM_SET_REQUEST;
>		USETW(req.wValue, 0);
>		USETW(req.wIndex, 0);
>		USETW(req.wLength, 0);
>		ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom, 
>		    &req, NULL, 0, 1000);
>	}
>}
>
>static void
>uplcom_start_read(struct ucom_softc *ucom)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>
>	/* start interrupt endpoint */
>	usbd_transfer_start(sc->sc_xfer[UPLCOM_INTR_DT_RD]);
>
>	/* start read endpoint */
>	usbd_transfer_start(sc->sc_xfer[UPLCOM_BULK_DT_RD]);
>}
>
>static void
>uplcom_stop_read(struct ucom_softc *ucom)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>
>	/* stop interrupt endpoint */
>	usbd_transfer_stop(sc->sc_xfer[UPLCOM_INTR_DT_RD]);
>
>	/* stop read endpoint */
>	usbd_transfer_stop(sc->sc_xfer[UPLCOM_BULK_DT_RD]);
>}
>
>static void
>uplcom_start_write(struct ucom_softc *ucom)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>
>	usbd_transfer_start(sc->sc_xfer[UPLCOM_BULK_DT_WR]);
>}
>
>static void
>uplcom_stop_write(struct ucom_softc *ucom)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>
>	usbd_transfer_stop(sc->sc_xfer[UPLCOM_BULK_DT_WR]);
>}
>
>static void
>uplcom_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>
>	DPRINTF("\n");
>
>	*lsr = sc->sc_lsr;
>	*msr = sc->sc_msr;
>}
>
>static void
>uplcom_intr_callback(struct usb_xfer *xfer, usb_error_t error)
>{
>	struct uplcom_softc *sc = usbd_xfer_softc(xfer);
>	struct usb_page_cache *pc;
>	uint8_t buf[9];
>	int actlen;
>
>	usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
>
>	switch (USB_GET_STATE(xfer)) {
>	case USB_ST_TRANSFERRED:
>
>		DPRINTF("actlen = %u\n", actlen);
>
>		if (actlen >= 9) {
>
>			pc = usbd_xfer_get_frame(xfer, 0);
>			usbd_copy_out(pc, 0, buf, sizeof(buf));
>
>			DPRINTF("status = 0x%02x\n", buf[UPLCOM_STATE_INDEX]);
>
>			sc->sc_lsr = 0;
>			sc->sc_msr = 0;
>
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_CTS) {
>				sc->sc_msr |= SER_CTS;
>			}
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_OVERRUN_ERROR) {
>				sc->sc_lsr |= ULSR_OE;
>			}
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_PARITY_ERROR) {
>				sc->sc_lsr |= ULSR_PE;
>			}
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_FRAME_ERROR) {
>				sc->sc_lsr |= ULSR_FE;
>			}
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_RING) {
>				sc->sc_msr |= SER_RI;
>			}
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_BREAK_ERROR) {
>				sc->sc_lsr |= ULSR_BI;
>			}
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_DSR) {
>				sc->sc_msr |= SER_DSR;
>			}
>			if (buf[UPLCOM_STATE_INDEX] & RSAQ_STATUS_DCD) {
>				sc->sc_msr |= SER_DCD;
>			}
>			ucom_status_change(&sc->sc_ucom);
>		}
>	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
>uplcom_write_callback(struct usb_xfer *xfer, usb_error_t error)
>{
>	struct uplcom_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,
>		    UPLCOM_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
>uplcom_read_callback(struct usb_xfer *xfer, usb_error_t error)
>{
>	struct uplcom_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
>uplcom_poll(struct ucom_softc *ucom)
>{
>	struct uplcom_softc *sc = ucom->sc_parent;
>	usbd_transfer_poll(sc->sc_xfer, UPLCOM_N_TRANSFER);
>}

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Attachments on bug 225932: 190665 | 190666 | 190667