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From PR kern/33496 - add uslsa(4), a CP210x USB-RS232 ucom driver.

Browse Source 
After minor hacks, it compiles without problems; however, it's not been tested
with an actual device.
This commit is contained in:
dogcow 2007-05-20 05:08:17 +00:00
parent 7103bb1242
commit 2d38890bb5
2 changed files with 590 additions and 1 deletions
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6
sys/dev/usb/files.usb
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@ -1,4 +1,4 @@
# $NetBSD: files.usb,v 1.76 2007/05/11 13:12:14 is Exp $
# $NetBSD: files.usb,v 1.77 2007/05/20 05:08:17 dogcow Exp $
#
# Config file and device description for machine-independent USB code.
# Included by ports that need it. Ports that use it must provide
@ -245,6 +245,10 @@ device ukyopon: ucombus, umodem_common
attach ukyopon at usbifif
file dev/usb/ukyopon.c ukyopon
# Silicon Labs CP210x serial driver
device uslsa: ucombus
attach uslsa at usbdevif
file dev/usb/uslsa.c uslsa
# Scanners
# Generic scanner support

585
sys/dev/usb/uslsa.c Normal file
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@ -0,0 +1,585 @@
/*
* Copyright (c) 2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jonathan A. Kollasch <jakllsch@kollasch.net>. Craig Shelley's Linux
* driver provided invaluable documentation.
*
* This code is derived from ugensa.c, 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.
* 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 <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/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/ucomvar.h>
#ifdef DEBUG
#define USLSA_DEBUG
#endif
#ifdef USLSA_DEBUG
#define DPRINTF(x) if (uslsadebug) printf x
#define DPRINTFN(n,x) if (uslsadebug>(n)) printf x
int uslsadebug = 0;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
#define USLSA_REQUEST_SET 0x41
#define USLSA_REQUEST_GET 0xc1
#define USLSA_REQ_SET_STATE 0x00
#define USLSA_REQ_SET_BPS 0x01
#define USLSA_REQ_GET_BPS 0x02
#define USLSA_REQ_SET_DPS 0x03
#define USLSA_REQ_GET_DPS 0x04
#define USLSA_REQ_SET_BREAK 0x05
#define USLSA_REQ_GET_BREAK 0x06
#define USLSA_REQ_SET_FLOW 0x07
#define USLSA_REQ_GET_FLOW 0x08
#define USLSA_REQ_SET_MODEM 0x13
#define USLSA_REQ_GET_MODEM 0x14
#define USLSA_REQ_SET_MISC 0x19
#define USLSA_REQ_GET_MISC 0x20
#define USLSA_STATE_DISABLE 0x0000
#define USLSA_STATE_ENABLE 0x0001
#define USLSA_BPS(b) (3686400/b)
#define USLSA_DPS_DATA_MASK 0x0f00
#define USLSA_DPS_DATA_FIVE 0x0500
#define USLSA_DPS_DATA_SIX 0x0600
#define USLSA_DPS_DATA_SEVEN 0x0700
#define USLSA_DPS_DATA_EIGHT 0x0800
#define USLSA_DPS_DATA_NINE 0x0900
#define USLSA_DPS_PARITY_MASK 0x00f0
#define USLSA_DPS_PARITY_SPACE 0x0040
#define USLSA_DPS_PARITY_MARK 0x0030
#define USLSA_DPS_PARITY_EVEN 0x0020
#define USLSA_DPS_PARITY_ODD 0x0010
#define USLSA_DPS_PARITY_NONE 0x0000
#define USLSA_DPS_STOP_MASK 0x000f
#define USLSA_DPS_STOP_TWO 0x0002
#define USLSA_DPS_STOP_ONE_FIVE 0x0001
#define USLSA_DPS_STOP_ONE 0x0000
#define USLSA_BREAK_DISABLE 0x0001
#define USLSA_BREAK_ENABLE 0x0000
#define USLSA_FLOW_SET_RTS 0x0200
#define USLSA_FLOW_SET_DTR 0x0100
#define USLSA_FLOW_MSR_MASK 0x00f0
#define USLSA_FLOW_MSR_DCD 0x0080
#define USLSA_FLOW_MSR_RI 0x0040
#define USLSA_FLOW_MSR_DSR 0x0020
#define USLSA_FLOW_MSR_CTS 0x0010
#define USLSA_FLOW_RTS 0x0002
#define USLSA_FLOW_DTR 0x0001
struct uslsa_softc {
USBBASEDEVICE sc_dev; /* base device */
usbd_device_handle sc_udev; /* device */
usbd_interface_handle sc_iface; /* interface */
device_ptr_t sc_subdev; /* ucom device */
u_char sc_dying; /* disconnecting */
u_char sc_lsr; /* local status register */
u_char sc_msr; /* uslsa status register */
};
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_open(void *, int);
static void uslsa_close(void *, int);
static int uslsa_request_set(struct uslsa_softc *, uint8_t, uint16_t);
static void uslsa_set_flow(struct uslsa_softc *, tcflag_t, tcflag_t);
struct ucom_methods uslsa_methods = {
uslsa_get_status,
uslsa_set,
uslsa_param,
NULL,
uslsa_open,
uslsa_close,
NULL,
NULL,
};
#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 }
};
#define uslsa_lookup(v, p) usb_lookup(uslsa_devs, v, p)
USB_DECLARE_DRIVER(uslsa);
USB_MATCH(uslsa)
{
USB_MATCH_START(uslsa, uaa);
return (uslsa_lookup(uaa->vendor, uaa->product) != NULL ?
UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
}
USB_ATTACH(uslsa)
{
USB_ATTACH_START(uslsa, sc, uaa);
usbd_device_handle dev = uaa->device;
usbd_interface_handle iface;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
char *devinfop;
char *devname;
usbd_status err;
struct ucom_attach_args uca;
int i;
devname = USBDEVNAME(sc->sc_dev);
DPRINTFN(10, ("\nuslsa_attach: sc=%p\n", sc));
/* Move the device into the configured state. */
err = usbd_set_config_index(dev, USLSA_CONFIG_INDEX, 1);
if (err) {
printf("\n%s: failed to set configuration, err=%s\n",
devname, usbd_errstr(err));
goto bad;
}
err = usbd_device2interface_handle(dev, USLSA_IFACE_INDEX, &iface);
if (err) {
printf("\n%s: failed to get interface, err=%s\n",
devname, usbd_errstr(err));
goto bad;
}
devinfop = usbd_devinfo_alloc(dev, 0);
USB_ATTACH_SETUP;
printf("%s: %s\n", devname, devinfop);
usbd_devinfo_free(devinfop);
id = usbd_get_interface_descriptor(iface);
sc->sc_udev = dev;
sc->sc_iface = iface;
uca.info = "Silicon Labs CP210x";
uca.ibufsize = USLSA_BUFSIZE;
uca.obufsize = USLSA_BUFSIZE;
uca.ibufsizepad = USLSA_BUFSIZE;
uca.opkthdrlen = 0;
uca.device = dev;
uca.iface = iface;
uca.methods = &uslsa_methods;
uca.arg = sc;
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
USBDEV(sc->sc_dev));
uca.bulkin = uca.bulkout = -1;
for (i = 0; i < id->bNumEndpoints; i++) {
int addr, dir, attr;
ed = usbd_interface2endpoint_descriptor(iface, i);
if (ed == NULL) {
printf("%s: could not read endpoint descriptor"
": %s\n", devname, usbd_errstr(err));
goto bad;
}
addr = ed->bEndpointAddress;
dir = UE_GET_DIR(ed->bEndpointAddress);
attr = ed->bmAttributes & UE_XFERTYPE;
if (dir == UE_DIR_IN && attr == UE_BULK)
uca.bulkin = addr;
else if (dir == UE_DIR_OUT && attr == UE_BULK)
uca.bulkout = addr;
else
printf("%s: unexpected endpoint\n", devname);
}
if (uca.bulkin == -1) {
printf("%s: Could not find data bulk in\n",
USBDEVNAME(sc->sc_dev));
goto bad;
}
if (uca.bulkout == -1) {
printf("%s: Could not find data bulk out\n",
USBDEVNAME(sc->sc_dev));
goto bad;
}
DPRINTF(("uslsa: in=0x%x out=0x%x\n", uca.bulkin, uca.bulkout));
sc->sc_subdev = config_found_sm_loc(self, "ucombus", NULL, &uca,
ucomprint, ucomsubmatch);
USB_ATTACH_SUCCESS_RETURN;
bad:
DPRINTF(("uslsa_attach: ATTACH ERROR\n"));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
int
uslsa_activate(device_ptr_t self, enum devact act)
{
struct uslsa_softc *sc = (struct uslsa_softc *) self;
int rv = 0;
switch (act) {
case DVACT_ACTIVATE:
return (EOPNOTSUPP);
break;
case DVACT_DEACTIVATE:
sc->sc_dying = 1;
if (sc->sc_subdev)
rv = config_deactivate(sc->sc_subdev);
break;
}
return (rv);
}
USB_DETACH(uslsa)
{
USB_DETACH_START(uslsa, sc);
int rv = 0;
DPRINTF(("uslsa_detach: sc=%p flags=%d\n", sc, flags));
sc->sc_dying = 1;
if (sc->sc_subdev != NULL)
rv = config_detach(sc->sc_subdev, flags);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
USBDEV(sc->sc_dev));
return (rv);
}
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 err;
int actlen;
uint16_t flowreg;
sc = vsc;
DPRINTF(("uslsa_get_status:\n"));
req.bmRequestType = USLSA_REQUEST_GET;
req.bRequest = USLSA_REQ_GET_FLOW;
USETW(req.wValue, 0);
USETW(req.wIndex, 0);
USETW(req.wLength, sizeof(flowreg));
err = usbd_do_request_flags(sc->sc_udev, &req, &flowreg,
USBD_SHORT_XFER_OK, &actlen, USBD_DEFAULT_TIMEOUT);
if (err)
printf("%s: uslsa_get_status: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
DPRINTF(("uslsa_get_status: flowreg=0x%x\n", flowreg));
sc->sc_msr = (u_char)(USLSA_FLOW_MSR_MASK & flowreg);
if (lsr != NULL)
*lsr = sc->sc_lsr;
if (msr != NULL)
*msr = sc->sc_msr;
}
static void
uslsa_set(void *vsc, int portno, int reg, int onoff)
{
struct uslsa_softc *sc;
sc = vsc;
DPRINTF(("uslsa_set: sc=%p, port=%d reg=%d onoff=%d\n", sc, portno,
reg, onoff));
switch (reg) {
case UCOM_SET_DTR:
if (uslsa_request_set(sc, USLSA_REQ_SET_FLOW,
(onoff ? (USLSA_FLOW_DTR | USLSA_FLOW_SET_DTR) :
USLSA_FLOW_SET_DTR)))
printf("%s: uslsa_set_dtr failed\n",
USBDEVNAME(sc->sc_dev));
break;
case UCOM_SET_RTS:
if (uslsa_request_set(sc, USLSA_REQ_SET_FLOW,
(onoff ? (USLSA_FLOW_RTS | USLSA_FLOW_SET_RTS) :
USLSA_FLOW_SET_RTS)))
printf("%s: uslsa_set_rts failed\n",
USBDEVNAME(sc->sc_dev));
break;
case UCOM_SET_BREAK:
if (uslsa_request_set(sc, USLSA_REQ_SET_BREAK,
(onoff ? USLSA_BREAK_ENABLE :
USLSA_BREAK_DISABLE)))
printf("%s: uslsa_set_break failed\n",
USBDEVNAME(sc->sc_dev));
break;
default:
break;
}
}
static int
uslsa_param(void *vsc, int portno, struct termios * t)
{
struct uslsa_softc *sc;
uint16_t data;
sc = vsc;
DPRINTF(("uslsa_param: sc=%p\n", sc));
switch (t->c_ospeed) {
case B600:
case B1200:
case B2400:
case B4800:
case B9600:
case B19200:
case B38400:
case B57600:
case B115200:
case B230400:
case B460800:
case B921600:
data = USLSA_BPS(t->c_ospeed);
break;
default:
printf("%s: uslsa_param: unsupported data rate, "
"forcing default of 115200bps\n",
USBDEVNAME(sc->sc_dev));
data = USLSA_BPS(B115200);
};
if (uslsa_request_set(sc, USLSA_REQ_SET_BPS, data))
printf("%s: uslsa_param: setting data rate failed\n",
USBDEVNAME(sc->sc_dev));
data = 0;
if (ISSET(t->c_cflag, CSTOPB))
data |= USLSA_DPS_STOP_TWO;
else
data |= USLSA_DPS_STOP_ONE;
if (ISSET(t->c_cflag, PARENB)) {
if (ISSET(t->c_cflag, PARODD))
data |= USLSA_DPS_PARITY_ODD;
else
data |= USLSA_DPS_PARITY_EVEN;
} else
data |= USLSA_DPS_PARITY_NONE;
switch (ISSET(t->c_cflag, CSIZE)) {
case CS5:
data |= USLSA_DPS_DATA_FIVE;
break;
case CS6:
data |= USLSA_DPS_DATA_SIX;
break;
case CS7:
data |= USLSA_DPS_DATA_SEVEN;
break;
case CS8:
data |= USLSA_DPS_DATA_EIGHT;
break;
}
DPRINTF(("uslsa_param: setting DPS register to 0x%x\n", data));
if (uslsa_request_set(sc, USLSA_REQ_SET_DPS, data))
printf("%s: setting DPS register failed: invalid argument\n",
USBDEVNAME(sc->sc_dev));
uslsa_set_flow(sc, t->c_cflag, t->c_iflag);
return 0;
}
static int
uslsa_open(void *vsc, int portno)
{
struct uslsa_softc *sc;
sc = vsc;
DPRINTF(("uslsa_open: sc=%p\n", sc));
if (sc->sc_dying)
return (EIO);
if (uslsa_request_set(sc, USLSA_REQ_SET_STATE, USLSA_STATE_ENABLE))
return (EIO);
return 0;
}
void
uslsa_close(void *vsc, int portno)
{
struct uslsa_softc *sc;
sc = vsc;
if (sc->sc_dying)
return;
DPRINTF(("uslsa_close: sc=%p\n", sc));
if (uslsa_request_set(sc, USLSA_REQ_SET_STATE,
USLSA_STATE_DISABLE))
printf("%s: disable-on-close failed\n",
USBDEVNAME(sc->sc_dev));
}
/*
* uslsa_request_set(), wrapper for doing sets with usbd_do_request()
*/
static int
uslsa_request_set(struct uslsa_softc * sc, uint8_t request, uint16_t value)
{
usb_device_request_t req;
usbd_status err;
req.bmRequestType = USLSA_REQUEST_SET;
req.bRequest = request;
USETW(req.wValue, value);
USETW(req.wIndex, 0);
USETW(req.wLength, 0);
err = usbd_do_request(sc->sc_udev, &req, 0);
if (err)
printf("%s: uslsa_request: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
return err;
}
/*
* uslsa_set_flow() does some magic to set up hardware flow control
*/
static void
uslsa_set_flow(struct uslsa_softc *sc, tcflag_t cflag, tcflag_t iflag)
{
uint8_t mysterydata[16];
usb_device_request_t req;
usbd_status err;
DPRINTF(("uslsa_set_flow: cflag = 0x%x, iflag = 0x%x\n",
cflag, iflag));
req.bmRequestType = USLSA_REQUEST_GET;
req.bRequest = USLSA_REQ_GET_MODEM;
USETW(req.wValue, 0);
USETW(req.wIndex, 0);
USETW(req.wLength, 16);
err = usbd_do_request(sc->sc_udev, &req, mysterydata);
if (err)
printf("%s: uslsa_set_flow: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
if (ISSET(cflag, CRTSCTS)) {
mysterydata[0] &= ~0x7b;
mysterydata[0] |= 0x09;
mysterydata[4] = 0x80;
} else {
mysterydata[0] &= ~0x7b;
mysterydata[0] |= 0x01;
mysterydata[4] = 0x40;
}
req.bmRequestType = USLSA_REQUEST_SET;
req.bRequest = USLSA_REQ_SET_MODEM;
USETW(req.wValue, 0);
USETW(req.wIndex, 0);
USETW(req.wLength, 16);
err = usbd_do_request(sc->sc_udev, &req, mysterydata);
if (err)
printf("%s: uslsa_set_flow: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
}