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NetBSD/sys/dev/usb/uslsa.c

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/* $NetBSD: uslsa.c,v 1.29 2020/03/13 18:17:41 christos Exp $ */
/* from ugensa.c */
/*
* Copyright (c) 2004, 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Roland C. Dowdeswell <elric@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.
*/
/*
* Copyright (c) 2007, 2009 Jonathan A. Kollasch.
* 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 ``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 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uslsa.c,v 1.29 2020/03/13 18:17:41 christos Exp $");
#ifdef _KERNEL_OPT
#include "opt_usb.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/ucomvar.h>
#include <dev/usb/uslsareg.h>
#include <fs/unicode.h>
#ifdef USLSA_DEBUG
#define DPRINTF(x) if (uslsadebug) device_printf x
int uslsadebug = 0;
#else
#define DPRINTF(x)
#endif
struct uslsa_softc {
device_t sc_dev; /* base device */
device_t sc_subdev; /* ucom device */
struct usbd_device * sc_udev; /* usb device */
struct usbd_interface * sc_iface; /* interface */
uint8_t sc_ifnum; /* interface number */
bool sc_dying; /* disconnecting */
};
static void uslsa_get_status(void *sc, int, u_char *, u_char *);
static void uslsa_set(void *, int, int, int);
static int uslsa_param(void *, int, struct termios *);
static int uslsa_ioctl(void *, int, u_long, void *, int, proc_t *);
static int uslsa_open(void *, int);
static void uslsa_close(void *, int);
static int uslsa_usbd_errno(usbd_status);
static int uslsa_request_set(struct uslsa_softc *, uint8_t, uint16_t);
static int uslsa_set_flow(struct uslsa_softc *, tcflag_t, tcflag_t);
static const struct ucom_methods uslsa_methods = {
.ucom_get_status = uslsa_get_status,
.ucom_set = uslsa_set,
.ucom_param = uslsa_param,
.ucom_ioctl = uslsa_ioctl,
.ucom_open = uslsa_open,
.ucom_close = uslsa_close,
};
#define USLSA_CONFIG_INDEX 0
#define USLSA_IFACE_INDEX 0
#define USLSA_BUFSIZE 256
static const struct usb_devno uslsa_devs[] = {
{ USB_VENDOR_BALTECH, USB_PRODUCT_BALTECH_CARDREADER },
{ USB_VENDOR_DYNASTREAM, USB_PRODUCT_DYNASTREAM_ANTDEVBOARD },
{ USB_VENDOR_JABLOTRON, USB_PRODUCT_JABLOTRON_PC60B },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_ARGUSISP },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_CRUMB128 },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_DEGREECONT },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_DESKTOPMOBILE },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_IPLINK1220 },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_LIPOWSKY_HARP },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_LIPOWSKY_JTAG },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_LIPOWSKY_LIN },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_POLOLU },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_CP210X_1 },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_CP210X_2 },
{ USB_VENDOR_SILABS, USB_PRODUCT_SILABS_SUNNTO },
{ USB_VENDOR_SILABS2, USB_PRODUCT_SILABS2_DCU11CLONE },
{ USB_VENDOR_USI, USB_PRODUCT_USI_MC60 },
{ USB_VENDOR_WMR, USB_PRODUCT_WMR_RIGBLASTER },
};
static int uslsa_match(device_t, cfdata_t, void *);
static void uslsa_attach(device_t, device_t, void *);
static void uslsa_childdet(device_t, device_t);
static int uslsa_detach(device_t, int);
CFATTACH_DECL2_NEW(uslsa, sizeof(struct uslsa_softc), uslsa_match,
uslsa_attach, uslsa_detach, NULL, NULL, uslsa_childdet);
static int
uslsa_match(device_t parent, cfdata_t match, void *aux)
{
const struct usbif_attach_arg *uiaa = aux;
if (usb_lookup(uslsa_devs, uiaa->uiaa_vendor, uiaa->uiaa_product)
!= NULL)
return UMATCH_VENDOR_PRODUCT;
else
return UMATCH_NONE;
}
static void
uslsa_attach(device_t parent, device_t self, void *aux)
{
struct uslsa_softc *sc;
const struct usbif_attach_arg *uiaa = aux;
const usb_interface_descriptor_t *id;
const usb_endpoint_descriptor_t *ed;
char *devinfop;
struct ucom_attach_args ucaa;
int i;
sc = device_private(self);
sc->sc_dev = self;
sc->sc_udev = uiaa->uiaa_device;
sc->sc_iface = uiaa->uiaa_iface;
sc->sc_dying = false;
aprint_naive("\n");
aprint_normal("\n");
devinfop = usbd_devinfo_alloc(sc->sc_udev, 0);
aprint_normal_dev(self, "%s\n", devinfop);
usbd_devinfo_free(devinfop);
id = usbd_get_interface_descriptor(sc->sc_iface);
sc->sc_ifnum = id->bInterfaceNumber;
ucaa.ucaa_info = "Silicon Labs CP210x";
ucaa.ucaa_portno = UCOM_UNK_PORTNO;
ucaa.ucaa_ibufsize = USLSA_BUFSIZE;
ucaa.ucaa_obufsize = USLSA_BUFSIZE;
ucaa.ucaa_ibufsizepad = USLSA_BUFSIZE;
ucaa.ucaa_opkthdrlen = 0;
ucaa.ucaa_device = sc->sc_udev;
ucaa.ucaa_iface = sc->sc_iface;
ucaa.ucaa_methods = &uslsa_methods;
ucaa.ucaa_arg = sc;
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
ucaa.ucaa_bulkin = ucaa.ucaa_bulkout = -1;
for (i = 0; i < id->bNumEndpoints; i++) {
int addr, dir, attr;
ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
if (ed == NULL) {
aprint_error_dev(self,
"could not read endpoint descriptor\n");
sc->sc_dying = true;
return;
}
addr = ed->bEndpointAddress;
dir = UE_GET_DIR(ed->bEndpointAddress);
attr = ed->bmAttributes & UE_XFERTYPE;
if (dir == UE_DIR_IN && attr == UE_BULK) {
ucaa.ucaa_bulkin = addr;
} else if (dir == UE_DIR_OUT && attr == UE_BULK) {
ucaa.ucaa_bulkout = addr;
} else {
aprint_error_dev(self, "unexpected endpoint\n");
}
}
aprint_debug_dev(sc->sc_dev, "EPs: in=%#x out=%#x\n",
ucaa.ucaa_bulkin, ucaa.ucaa_bulkout);
if ((ucaa.ucaa_bulkin == -1) || (ucaa.ucaa_bulkout == -1)) {
aprint_error_dev(self, "could not find endpoints\n");
sc->sc_dying = true;
return;
}
sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &ucaa,
ucomprint, ucomsubmatch);
if (!pmf_device_register(self, NULL, NULL))
aprint_error_dev(self, "couldn't establish power handler\n");
return;
}
static void
uslsa_childdet(device_t self, device_t child)
{
struct uslsa_softc *sc = device_private(self);
KASSERT(sc->sc_subdev == child);
sc->sc_subdev = NULL;
}
static int
uslsa_detach(device_t self, int flags)
{
struct uslsa_softc *sc = device_private(self);
int rv = 0;
DPRINTF((self, "%s(%p, %#x)\n", __func__, self, flags));
sc->sc_dying = true;
if (sc->sc_subdev != NULL) {
rv = config_detach(sc->sc_subdev, flags);
sc->sc_subdev = NULL;
}
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
return rv;
}
static int
uslsa_usbd_errno(usbd_status status)
{
switch (status) {
case USBD_NORMAL_COMPLETION:
return 0;
case USBD_STALLED:
return EINVAL;
default:
return EIO;
}
}
static void
uslsa_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
{
struct uslsa_softc *sc;
usb_device_request_t req;
usbd_status status;
uint8_t mdmsts;
sc = vsc;
DPRINTF((sc->sc_dev, "%s(%p, %d, ....)\n", __func__, vsc, portno));
if (sc->sc_dying)
return;
req.bmRequestType = UT_READ_VENDOR_INTERFACE;
req.bRequest = SLSA_R_GET_MDMSTS;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ifnum);
USETW(req.wLength, SLSA_RL_GET_MDMSTS);
status = usbd_do_request(sc->sc_udev, &req, &mdmsts);
if (status != USBD_NORMAL_COMPLETION) {
device_printf(sc->sc_dev, "%s: GET_MDMSTS %s\n",
__func__, usbd_errstr(status));
return;
}
DPRINTF((sc->sc_dev, "%s: GET_MDMSTS %#x\n", __func__, mdmsts));
*lsr = 0;
*msr = ISSET(mdmsts, SLSA_MDMSTS_CTS) ? UMSR_CTS : 0;
*msr |= ISSET(mdmsts, SLSA_MDMSTS_DSR) ? UMSR_DSR : 0;
*msr |= ISSET(mdmsts, SLSA_MDMSTS_RI) ? UMSR_RI : 0;
*msr |= ISSET(mdmsts, SLSA_MDMSTS_DCD) ? UMSR_DCD : 0;
}
static void
uslsa_set(void *vsc, int portno, int reg, int onoff)
{
struct uslsa_softc *sc;
sc = vsc;
DPRINTF((sc->sc_dev, "%s(%p, %d, %d, %d)\n", __func__, vsc, portno,
reg, onoff));
if (sc->sc_dying)
return;
switch (reg) {
case UCOM_SET_DTR:
if (uslsa_request_set(sc, SLSA_R_SET_MHS,
SLSA_RV_SET_MHS_DTR_MASK |
(onoff ? SLSA_RV_SET_MHS_DTR : 0))) {
device_printf(sc->sc_dev, "SET_MHS/DTR failed\n");
}
break;
case UCOM_SET_RTS:
if (uslsa_request_set(sc, SLSA_R_SET_MHS,
SLSA_RV_SET_MHS_RTS_MASK |
(onoff ? SLSA_RV_SET_MHS_RTS : 0))) {
device_printf(sc->sc_dev, "SET_MHS/RTS failed\n");
}
break;
case UCOM_SET_BREAK:
if (uslsa_request_set(sc, SLSA_R_SET_BREAK,
(onoff ? SLSA_RV_SET_BREAK_ENABLE :
SLSA_RV_SET_BREAK_DISABLE))) {
device_printf(sc->sc_dev, "SET_BREAK failed\n");
}
break;
default:
break;
}
}
static int
uslsa_param(void *vsc, int portno, struct termios *t)
{
struct uslsa_softc *sc;
usb_device_request_t req;
usbd_status status;
uint16_t value;
uint32_t baud;
int ret;
sc = vsc;
DPRINTF((sc->sc_dev, "%s(%p, %d, %p)\n", __func__, vsc, portno, t));
if (sc->sc_dying)
return EIO;
req.bmRequestType = UT_WRITE_VENDOR_INTERFACE;
req.bRequest = SLSA_R_SET_BAUDRATE;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ifnum);
USETW(req.wLength, 4);
baud = t->c_ospeed;
status = usbd_do_request(sc->sc_udev, &req, &baud);
if (status != USBD_NORMAL_COMPLETION) {
/* fallback method for devices that don't know SET_BAUDRATE */
/* hope we calculate it right */
device_printf(sc->sc_dev, "%s: set baudrate %d, failed %s,"
" using set bauddiv\n",
__func__, baud, usbd_errstr(status));
value = SLSA_RV_BAUDDIV(t->c_ospeed);
if ((ret = uslsa_request_set(sc, SLSA_R_SET_BAUDDIV, value))
!= 0) {
device_printf(sc->sc_dev, "%s: SET_BAUDDIV failed\n",
__func__);
return ret;
}
}
value = 0;
if (ISSET(t->c_cflag, CSTOPB)) {
value |= SLSA_RV_LINE_CTL_STOP_2;
} else {
value |= SLSA_RV_LINE_CTL_STOP_1;
}
if (ISSET(t->c_cflag, PARENB)) {
if (ISSET(t->c_cflag, PARODD)) {
value |= SLSA_RV_LINE_CTL_PARITY_ODD;
} else {
value |= SLSA_RV_LINE_CTL_PARITY_EVEN;
}
} else {
value |= SLSA_RV_LINE_CTL_PARITY_NONE;
}
switch (ISSET(t->c_cflag, CSIZE)) {
case CS5:
value |= SLSA_RV_LINE_CTL_LEN_5;
break;
case CS6:
value |= SLSA_RV_LINE_CTL_LEN_6;
break;
case CS7:
value |= SLSA_RV_LINE_CTL_LEN_7;
break;
case CS8:
value |= SLSA_RV_LINE_CTL_LEN_8;
break;
}
DPRINTF((sc->sc_dev, "%s: setting LINE_CTL to %#x\n",
__func__, value));
if ((ret = uslsa_request_set(sc, SLSA_R_SET_LINE_CTL, value)) != 0) {
device_printf(sc->sc_dev, "SET_LINE_CTL failed\n");
return ret;
}
if ((ret = uslsa_set_flow(sc, t->c_cflag, t->c_iflag)) != 0) {
device_printf(sc->sc_dev, "SET_LINE_CTL failed\n");
}
return ret;
}
static int
uslsa_ioctl(void *vsc, int portno, u_long cmd, void *data, int flag, proc_t *p)
{
struct uslsa_softc *sc;
sc = vsc;
if (sc->sc_dying)
return EIO;
switch (cmd) {
case TIOCMGET:
ucom_status_change(device_private(sc->sc_subdev));
return EPASSTHROUGH;
default:
return EPASSTHROUGH;
}
return 0;
}
static int
uslsa_open(void *vsc, int portno)
{
struct uslsa_softc *sc;
sc = vsc;
DPRINTF((sc->sc_dev, "%s(%p, %d)\n", __func__, vsc, portno));
if (sc->sc_dying)
return EIO;
return uslsa_request_set(sc, SLSA_R_IFC_ENABLE,
SLSA_RV_IFC_ENABLE_ENABLE);
}
static void
uslsa_close(void *vsc, int portno)
{
struct uslsa_softc *sc;
sc = vsc;
DPRINTF((sc->sc_dev, "%s(%p, %d)\n", __func__, vsc, portno));
if (sc->sc_dying)
return;
uslsa_request_set(sc, SLSA_R_IFC_ENABLE, SLSA_RV_IFC_ENABLE_DISABLE);
}
static int
uslsa_request_set(struct uslsa_softc * sc, uint8_t request, uint16_t value)
{
usb_device_request_t req;
usbd_status status;
req.bmRequestType = UT_WRITE_VENDOR_INTERFACE;
req.bRequest = request;
USETW(req.wValue, value);
USETW(req.wIndex, sc->sc_ifnum);
USETW(req.wLength, 0);
status = usbd_do_request(sc->sc_udev, &req, NULL);
return uslsa_usbd_errno(status);
}
static int
uslsa_set_flow(struct uslsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
{
struct slsa_fcs fcs;
usb_device_request_t req;
uint32_t ulControlHandshake;
uint32_t ulFlowReplace;
usbd_status status;
DPRINTF((sc->sc_dev, "%s(%p, %#x, %#x)\n", __func__, sc, cflag, iflag));
req.bmRequestType = UT_READ_VENDOR_INTERFACE;
req.bRequest = SLSA_R_GET_FLOW;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ifnum);
USETW(req.wLength, SLSA_RL_GET_FLOW);
status = usbd_do_request(sc->sc_udev, &req, &fcs);
if (status != USBD_NORMAL_COMPLETION) {
device_printf(sc->sc_dev, "%s: GET_FLOW %s\n",
__func__, usbd_errstr(status));
return uslsa_usbd_errno(status);
}
ulControlHandshake = le32toh(fcs.ulControlHandshake);
ulFlowReplace = le32toh(fcs.ulFlowReplace);
if (ISSET(cflag, CRTSCTS)) {
ulControlHandshake =
SERIAL_CTS_HANDSHAKE | __SHIFTIN(1, SERIAL_DTR_MASK);
ulFlowReplace = __SHIFTIN(2, SERIAL_RTS_MASK);
} else {
ulControlHandshake = __SHIFTIN(1, SERIAL_DTR_MASK);
ulFlowReplace = __SHIFTIN(1, SERIAL_RTS_MASK);
}
fcs.ulControlHandshake = htole32(ulControlHandshake);
fcs.ulFlowReplace = htole32(ulFlowReplace);
req.bmRequestType = UT_WRITE_VENDOR_INTERFACE;
req.bRequest = SLSA_R_SET_FLOW;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ifnum);
USETW(req.wLength, SLSA_RL_SET_FLOW);
status = usbd_do_request(sc->sc_udev, &req, &fcs);
return uslsa_usbd_errno(status);
}
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