VivoKey/vsmartcard
7
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity
Files
76d4c08f4aa7de508dfd3769a83ee54eed12307d
vsmartcard/ccid/usb.c
frankmorgner 76d4c08f4a removed not needed iso-identifier 
git-svn-id: https://vsmartcard.svn.sourceforge.net/svnroot/vsmartcard@21 96b47cad-a561-4643-ad3b-153ac7d7599c
2010-01-14 20:28:24 +00:00

1792 lines
51 KiB
C
Raw Blame History

/*
* Copyright (C) 2009 Frank Morgner
*
* This file is part of ccid.
*
* ccid is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* ccid is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* ccid. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <memory.h>
#include <pthread.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <asm/byteorder.h>
#include <linux/types.h>
#include <linux/usb/gadgetfs.h>
#include <linux/usb/ch9.h>
//#include <usb.h>
#ifdef AIO
/* this aio code works with libaio-0.3.106 */
#include <libaio.h>
#endif
#include "usbstring.h"
#include "ccid.h"
#define DRIVER_VENDOR_NUM 0x0D46 /* KOBIL Systems */
#define DRIVER_PRODUCT_NUM 0x3010 /* KOBIL Class 3 Reader */
static int vendorid = DRIVER_VENDOR_NUM;
static int productid = DRIVER_PRODUCT_NUM;
static int verbose = 0;
static int debug = 0;
static int dohid = 0;
static int doint = 0;
char *usb_reader_name = NULL;
int usb_reader_num = 0;
/* NOTE: these IDs don't imply endpoint numbering; host side drivers
* should use endpoint descriptors, or perhaps bcdDevice, to configure
* such things. Other product IDs could have different policies.
*/
/*-------------------------------------------------------------------------*/
/* these descriptors are modified based on what controller we find */
#define STRINGID_MFGR 1
#define STRINGID_PRODUCT 2
#define STRINGID_SERIAL 3
#define STRINGID_CONFIG 4
#define STRINGID_INTERFACE 5
#define STRINGID_HID_INTERFACE 6
static struct usb_device_descriptor
device_desc = {
.bLength = sizeof device_desc,
//.bcdUSB = __constant_cpu_to_le16 (0x0110),
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = __constant_cpu_to_le16 (0x0200),
.bDeviceClass = USB_CLASS_VENDOR_SPEC,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
// .bMaxPacketSize0 ... set by gadgetfs
.idVendor = __constant_cpu_to_le16 (DRIVER_VENDOR_NUM),
.idProduct = __constant_cpu_to_le16 (DRIVER_PRODUCT_NUM),
.iManufacturer = STRINGID_MFGR,
.iProduct = STRINGID_PRODUCT,
.iSerialNumber = STRINGID_SERIAL,
.bNumConfigurations = 1,
};
#define MAX_USB_POWER 1
#define CONFIG_VALUE 3
static struct usb_config_descriptor
config = {
.bLength = sizeof config,
.bDescriptorType = USB_DT_CONFIG,
/* must compute wTotalLength ... */
.bNumInterfaces = 1,
.bConfigurationValue = CONFIG_VALUE,
.iConfiguration = STRINGID_CONFIG,
.bmAttributes = USB_CONFIG_ATT_ONE
| USB_CONFIG_ATT_SELFPOWER,
.bMaxPower = (MAX_USB_POWER + 1) / 2,
};
static struct usb_interface_descriptor
source_sink_intf = {
.bLength = sizeof source_sink_intf,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceClass = USB_CLASS_CSCID,
.iInterface = STRINGID_INTERFACE,
};
static struct hid_class_descriptor
hid_desc = {
.bLength = sizeof hid_desc,
.bDescriptorType = 0x21,
.bcdHID = __constant_cpu_to_le16(0x101),
.bCountryCode = 0,
.bNumDescriptors = 0,
};
/* Full speed configurations are used for full-speed only devices as
* well as dual-speed ones (the only kind with high speed support).
*/
static struct usb_endpoint_descriptor
fs_source_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
/* NOTE some controllers may need FS bulk max packet size
* to be smaller. it would be a chip-specific option.
*/
.wMaxPacketSize = __constant_cpu_to_le16 (64),
};
static struct usb_endpoint_descriptor
fs_sink_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = __constant_cpu_to_le16 (64),
};
/* some devices can handle other result packet sizes */
/*#define STATUS_MAXPACKET 16*/
/*#define LOG2_STATUS_POLL_MSEC 5*/
#define STATUS_MAXPACKET 8
#define LOG2_STATUS_POLL_MSEC 3
static struct usb_endpoint_descriptor
fs_status_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16 (STATUS_MAXPACKET),
.bInterval = (1 << LOG2_STATUS_POLL_MSEC),
};
static struct usb_endpoint_descriptor
fs_hid_status_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16 (STATUS_MAXPACKET),
.bInterval = (1 << LOG2_STATUS_POLL_MSEC),
};
static const struct usb_endpoint_descriptor *fs_eps [3] = {
&fs_source_desc,
&fs_sink_desc,
&fs_status_desc,
};
/* High speed configurations are used only in addition to a full-speed
* ones ... since all high speed devices support full speed configs.
* Of course, not all hardware supports high speed configurations.
*/
static struct usb_endpoint_descriptor
hs_source_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = __constant_cpu_to_le16 (512),
};
static struct usb_endpoint_descriptor
hs_sink_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = __constant_cpu_to_le16 (512),
.bInterval = 1,
};
static struct usb_endpoint_descriptor
hs_status_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16 (STATUS_MAXPACKET),
.bInterval = LOG2_STATUS_POLL_MSEC + 3,
};
static struct usb_endpoint_descriptor
hs_hid_status_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = __constant_cpu_to_le16 (STATUS_MAXPACKET),
.bInterval = LOG2_STATUS_POLL_MSEC + 3,
};
static const struct usb_endpoint_descriptor *hs_eps [] = {
&hs_source_desc,
&hs_sink_desc,
&hs_status_desc,
};
/*-------------------------------------------------------------------------*/
/* 56 is the maximum for the KOBIL Class 3 Reader */
static char serial [57];
static struct usb_string stringtab [] = {
{ STRINGID_MFGR, "morgner@informatik.hu-berlin.de", },
{ STRINGID_PRODUCT, "CCID to PCSC Gadget", },
{ STRINGID_SERIAL, serial, },
{ STRINGID_CONFIG, "The Configuration", },
{ STRINGID_INTERFACE, "CCID to PCSC", },
{ STRINGID_HID_INTERFACE, "blakeks", },
};
static struct usb_gadget_strings strings = {
.language = 0x0409, /* "en-us" */
.strings = stringtab,
};
/*-------------------------------------------------------------------------*/
/* kernel drivers could autoconfigure like this too ... if
* they were willing to waste the relevant code/data space.
*/
static int HIGHSPEED;
static char *DEVNAME;
static char *EP_IN_NAME, *EP_OUT_NAME, *EP_STATUS_NAME, *EP_HID_STATUS_NAME;
/* gadgetfs currently has no chunking (or O_DIRECT/zerocopy) support
* to turn big requests into lots of smaller ones; so this is "small".
*/
#define USB_BUFSIZE (7 * 1024)
static enum usb_device_speed current_speed;
static inline int min(unsigned a, unsigned b)
{
return (a < b) ? a : b;
}
static int autoconfig ()
{
struct stat statb;
/* NetChip 2280 PCI device or dummy_hcd, high/full speed */
if (stat (DEVNAME = "net2280", &statb) == 0 ||
stat (DEVNAME = "dummy_udc", &statb) == 0) {
HIGHSPEED = 1;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0100),
fs_source_desc.bEndpointAddress
= hs_source_desc.bEndpointAddress
= USB_DIR_IN | 7;
EP_IN_NAME = "ep-a";
fs_sink_desc.bEndpointAddress = hs_sink_desc.bEndpointAddress
= USB_DIR_OUT | 3;
EP_OUT_NAME = "ep-b";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress
= hs_status_desc.bEndpointAddress
= USB_DIR_IN | 11;
EP_STATUS_NAME = "ep-f";
if (dohid) {
// TODO EP_HID_STATUS_NAME?
EP_HID_STATUS_NAME = "ep-e";
fs_hid_status_desc.bEndpointAddress
= hs_hid_status_desc.bEndpointAddress
= USB_DIR_IN | 10;
}
/* Intel PXA 2xx processor, full speed only */
} else if (stat (DEVNAME = "pxa2xx_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0101),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 6;
EP_IN_NAME = "ep6in-bulk";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 7;
EP_OUT_NAME = "ep7out-bulk";
/* using bulk for this since the pxa interrupt endpoints
* always use the no-toggle scheme (discouraged).
*/
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 11;
EP_STATUS_NAME = "ep11in-bulk";
if (dohid) {
EP_HID_STATUS_NAME = "ep12in-bulk";
fs_hid_status_desc.bEndpointAddress = USB_DIR_IN | 12;
}
#if 0
/* AMD au1x00 processor, full speed only */
} else if (stat (DEVNAME = "au1x00_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0102),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 2;
EP_IN_NAME = "ep2in";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 4;
EP_OUT_NAME = "ep4out";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3in";
/* Intel SA-1100 processor, full speed only */
} else if (stat (DEVNAME = "sa1100", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0103),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 2;
EP_IN_NAME = "ep2in-bulk";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 1;
EP_OUT_NAME = "ep1out-bulk";
source_sink_intf.bNumEndpoints = 2;
ccid_desc.dwFeatures &= ~0x100000; // USB Wake up signaling not supported
EP_STATUS_NAME = 0;
#endif
/* Toshiba TC86c001 PCI device, full speed only */
} else if (stat (DEVNAME = "goku_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0104),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 2;
EP_IN_NAME = "ep2-bulk";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 1;
EP_OUT_NAME = "ep1-bulk";
if (dohid) {
source_sink_intf.bNumEndpoints = 2;
// USB Wake up signaling not supported
ccid_desc.dwFeatures &= ~__constant_cpu_to_le32(0x100000);
EP_HID_STATUS_NAME = "ep3-bulk";
fs_hid_status_desc.bEndpointAddress = USB_DIR_IN | 3;
} else {
source_sink_intf.bNumEndpoints = 3;
EP_STATUS_NAME = "ep3-bulk";
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
}
/* Samsung S3C24xx series, full speed only */
} else if (stat (DEVNAME = "s3c2410_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0110),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 2;
EP_IN_NAME = "ep2-bulk";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 1;
EP_OUT_NAME = "ep1-bulk";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3-bulk";
if (dohid) {
EP_HID_STATUS_NAME = "ep4-bulk";
fs_hid_status_desc.bEndpointAddress = USB_DIR_IN | 4;
}
/* Renesas SH77xx processors, full speed only */
} else if (stat (DEVNAME = "sh_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0105),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 2;
EP_IN_NAME = "ep2in-bulk";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 1;
EP_OUT_NAME = "ep1out-bulk";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3in-bulk";
if (dohid) {
EP_HID_STATUS_NAME = "ep4in-bulk";
fs_hid_status_desc.bEndpointAddress = USB_DIR_IN | 4;
}
/* OMAP 1610 and newer devices, full speed only, fifo mode 0 or 3 */
} else if (stat (DEVNAME = "omap_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0106),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 1;
EP_IN_NAME = "ep1in-bulk";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 2;
EP_OUT_NAME = "ep2out-bulk";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3in-int";
if (dohid) {
EP_HID_STATUS_NAME = "ep4in-bulk";
fs_hid_status_desc.bEndpointAddress = USB_DIR_IN | 4;
}
/* Something based on Mentor USB Highspeed Dual-Role Controller */
} else if (stat (DEVNAME = "musb_hdrc", &statb) == 0) {
HIGHSPEED = 1;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0107),
fs_source_desc.bEndpointAddress
= hs_source_desc.bEndpointAddress
= USB_DIR_IN | 1;
EP_IN_NAME = "ep1in";
fs_sink_desc.bEndpointAddress = hs_sink_desc.bEndpointAddress
= USB_DIR_OUT | 1;
EP_OUT_NAME = "ep1out";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress
= hs_status_desc.bEndpointAddress
= USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3";
/* Atmel AT91 processors, full speed only */
} else if (stat (DEVNAME = "at91_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0106),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 1;
EP_IN_NAME = "ep1";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 2;
EP_OUT_NAME = "ep2";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3-int";
if (dohid) {
EP_HID_STATUS_NAME = "ep4";
fs_hid_status_desc.bEndpointAddress = USB_DIR_IN | 4;
}
/* Sharp LH740x processors, full speed only */
} else if (stat (DEVNAME = "lh740x_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0106),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 1;
EP_IN_NAME = "ep1in-bulk";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 2;
EP_OUT_NAME = "ep2out-bulk";
if (dohid) {
source_sink_intf.bNumEndpoints = 2;
// USB Wake up signaling not supported
ccid_desc.dwFeatures &= ~__constant_cpu_to_le32(0x100000);
fs_hid_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_HID_STATUS_NAME = "ep3in-int";
} else {
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3in-int";
}
/* Atmel AT32AP700x processors, high/full speed */
} else if (stat (DEVNAME = "atmel_usba_udc", &statb) == 0) {
HIGHSPEED = 1;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0108);
fs_source_desc.bEndpointAddress
= hs_source_desc.bEndpointAddress
= USB_DIR_IN | 1;
EP_IN_NAME = "ep1in-bulk";
fs_sink_desc.bEndpointAddress
= hs_sink_desc.bEndpointAddress
= USB_DIR_OUT | 2;
EP_OUT_NAME = "ep2out-bulk";
if (dohid) {
source_sink_intf.bNumEndpoints = 2;
// USB Wake up signaling not supported
ccid_desc.dwFeatures &= ~__constant_cpu_to_le32(0x100000);
fs_hid_status_desc.bEndpointAddress
= hs_hid_status_desc.bEndpointAddress
= USB_DIR_IN | 3;
EP_HID_STATUS_NAME = "ep3in-int";
} else {
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress
= hs_status_desc.bEndpointAddress
= USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3in-int";
}
} else {
DEVNAME = 0;
return -ENODEV;
}
if (!doint) {
source_sink_intf.bNumEndpoints = 2;
// USB Wake up signaling not supported
ccid_desc.dwFeatures &= ~__constant_cpu_to_le32(0x100000);
}
return 0;
}
#ifdef AIO
static int iso;
static int interval;
static unsigned iosize;
static unsigned bufsize = USB_BUFSIZE;
/* This is almost the only place where usb needs to know whether we're
* driving an isochronous stream or a bulk one.
*/
static int iso_autoconfig ()
{
struct stat statb;
/* ISO endpoints "must not be part of a default interface setting".
* Never do it like this in "real" code! This uses the default
* setting (alt 0) because it's the only one pxa supports.
*
* This code doesn't adjust the sample rate based on feedback.
*/
device_desc.idProduct = __constant_cpu_to_le16(productid);
/* NetChip 2280 PCI device or dummy_hcd, high/full speed */
if (stat (DEVNAME = "net2280", &statb) == 0 ||
stat (DEVNAME = "dummy_udc", &statb) == 0) {
unsigned bInterval, wMaxPacketSize;
HIGHSPEED = 1;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0100);
/* this code won't use two or four uframe periods */
if (bufsize > 1024) {
interval = 0;
bInterval = 1;
/* "modprobe net2280 fifo_mode=1" may be needed */
if (bufsize > (2 * 1024)) {
wMaxPacketSize = min ((bufsize + 2)/3, 1024);
bufsize = min (3 * wMaxPacketSize, bufsize);
wMaxPacketSize |= 2 << 11;
} else {
wMaxPacketSize = min ((bufsize + 1)/2, 1024);
wMaxPacketSize |= 1 << 11;
}
} else {
bInterval = interval + 4;
wMaxPacketSize = bufsize;
}
fs_source_desc.bEndpointAddress
= hs_source_desc.bEndpointAddress
= USB_DIR_IN | 7;
fs_source_desc.bmAttributes
= hs_source_desc.bmAttributes
= USB_ENDPOINT_XFER_ISOC;
fs_source_desc.wMaxPacketSize = min (bufsize, 1023);
hs_source_desc.wMaxPacketSize = wMaxPacketSize;
fs_source_desc.bInterval = interval + 1;
hs_source_desc.bInterval = bInterval;
EP_IN_NAME = "ep-a";
fs_sink_desc.bEndpointAddress
= hs_sink_desc.bEndpointAddress
= USB_DIR_OUT | 3;
fs_sink_desc.bmAttributes
= hs_sink_desc.bmAttributes
= USB_ENDPOINT_XFER_ISOC;
fs_sink_desc.wMaxPacketSize = min (bufsize, 1023);
hs_sink_desc.wMaxPacketSize = wMaxPacketSize;
fs_sink_desc.bInterval = interval + 1;
hs_sink_desc.bInterval = bInterval;
EP_OUT_NAME = "ep-b";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress
= hs_status_desc.bEndpointAddress
= USB_DIR_IN | 11;
EP_STATUS_NAME = "ep-f";
/* Intel PXA 2xx processor, full speed only */
} else if (stat (DEVNAME = "pxa2xx_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0101),
bufsize = min (bufsize, 256);
fs_source_desc.bEndpointAddress = USB_DIR_IN | 3;
fs_source_desc.bmAttributes = USB_ENDPOINT_XFER_ISOC;
fs_source_desc.wMaxPacketSize = bufsize;
fs_source_desc.bInterval = interval;
EP_IN_NAME = "ep3in-iso";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 4;
fs_sink_desc.bmAttributes = USB_ENDPOINT_XFER_ISOC;
fs_sink_desc.wMaxPacketSize = bufsize;
fs_sink_desc.bInterval = interval;
EP_OUT_NAME = "ep4out-iso";
/* using bulk for this since the pxa interrupt endpoints
* always use the no-toggle scheme (discouraged).
*/
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 11;
EP_STATUS_NAME = "ep11in-bulk";
/* OMAP 1610 and newer devices, full speed only, fifo mode 3 */
} else if (stat (DEVNAME = "omap_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0102),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 7;
fs_source_desc.bmAttributes = USB_ENDPOINT_XFER_ISOC;
fs_source_desc.wMaxPacketSize = min (bufsize, 256);
fs_source_desc.bInterval = interval;
EP_IN_NAME = "ep7in-iso";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 8;
fs_sink_desc.bmAttributes = USB_ENDPOINT_XFER_ISOC;
fs_sink_desc.wMaxPacketSize = min (bufsize, 256);
fs_sink_desc.bInterval = interval;
EP_OUT_NAME = "ep8out-iso";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 9;
EP_STATUS_NAME = "ep9in-int";
/* Something based on Mentor USB Highspeed Dual-Role Controller;
* assumes a core that doesn't include high bandwidth support.
*/
} else if (stat (DEVNAME = "musb_hdrc", &statb) == 0) {
unsigned bInterval, wMaxPacketSize;
HIGHSPEED = 1;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0103);
bInterval = interval + 4;
wMaxPacketSize = bufsize;
fs_source_desc.bEndpointAddress
= hs_source_desc.bEndpointAddress
= USB_DIR_IN | 1;
fs_source_desc.bmAttributes
= hs_source_desc.bmAttributes
= USB_ENDPOINT_XFER_ISOC;
fs_source_desc.wMaxPacketSize = min (bufsize, 1023);
hs_source_desc.wMaxPacketSize = wMaxPacketSize;
fs_source_desc.bInterval = interval + 1;
hs_source_desc.bInterval = bInterval;
EP_IN_NAME = "ep1in";
fs_sink_desc.bEndpointAddress
= hs_sink_desc.bEndpointAddress
= USB_DIR_OUT | 1;
fs_sink_desc.bmAttributes
= hs_sink_desc.bmAttributes
= USB_ENDPOINT_XFER_ISOC;
fs_sink_desc.wMaxPacketSize = min (bufsize, 1023);
hs_sink_desc.wMaxPacketSize = wMaxPacketSize;
fs_sink_desc.bInterval = interval + 1;
hs_sink_desc.bInterval = bInterval;
EP_OUT_NAME = "ep1out";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress
= hs_status_desc.bEndpointAddress
= USB_DIR_IN | 11;
EP_STATUS_NAME = "ep3";
/* Atmel AT91 processors, full speed only */
} else if (stat (DEVNAME = "at91_udc", &statb) == 0) {
HIGHSPEED = 0;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0104),
fs_source_desc.bEndpointAddress = USB_DIR_IN | 4;
fs_source_desc.bmAttributes = USB_ENDPOINT_XFER_ISOC;
fs_source_desc.wMaxPacketSize = min (bufsize, 256);
fs_source_desc.bInterval = interval;
EP_IN_NAME = "ep4";
fs_sink_desc.bEndpointAddress = USB_DIR_OUT | 2;
fs_sink_desc.bmAttributes = USB_ENDPOINT_XFER_ISOC;
fs_sink_desc.wMaxPacketSize = min (bufsize, 256);
fs_sink_desc.bInterval = interval;
EP_OUT_NAME = "ep5";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress = USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3-int";
/* Atmel AT32AP700x processors, high/full speed */
} else if (stat (DEVNAME = "atmel_usba_udc", &statb) == 0){
HIGHSPEED = 1;
device_desc.bcdDevice = __constant_cpu_to_le16 (0x0105);
fs_source_desc.bEndpointAddress
= hs_source_desc.bEndpointAddress
= USB_DIR_IN | 5;
fs_source_desc.bmAttributes
= hs_source_desc.bmAttributes
= USB_ENDPOINT_XFER_ISOC;
fs_source_desc.wMaxPacketSize
= hs_source_desc.wMaxPacketSize
= __cpu_to_le16(min (bufsize, 1024));
fs_source_desc.bInterval
= hs_source_desc.bInterval
= interval;
EP_IN_NAME = "ep5in-iso";
fs_sink_desc.bEndpointAddress
= hs_sink_desc.bEndpointAddress
= USB_DIR_OUT | 6;
fs_sink_desc.bmAttributes
= hs_sink_desc.bmAttributes
= USB_ENDPOINT_XFER_ISOC;
fs_sink_desc.wMaxPacketSize
= hs_sink_desc.wMaxPacketSize
= __cpu_to_le16(min (bufsize, 1024));
fs_sink_desc.bInterval
= hs_sink_desc.bInterval
= interval;
EP_OUT_NAME = "ep6out-iso";
source_sink_intf.bNumEndpoints = 3;
fs_status_desc.bEndpointAddress
= hs_status_desc.bEndpointAddress
= USB_DIR_IN | 3;
EP_STATUS_NAME = "ep3in-int";
} else {
DEVNAME = 0;
return -ENODEV;
}
if (verbose) {
fprintf (stderr, "iso fs wMaxPacket %04x bInterval %02x\n",
__le16_to_cpu(fs_sink_desc.wMaxPacketSize),
fs_sink_desc.bInterval);
if (HIGHSPEED)
fprintf (stderr,
"iso hs wMaxPacket %04x bInterval %02x\n",
__le16_to_cpu(hs_sink_desc.wMaxPacketSize),
hs_sink_desc.bInterval);
}
return 0;
}
#else
#define iso 0
#endif /* AIO */
/*-------------------------------------------------------------------------*/
/* full duplex data, with at least three threads: ep0, sink, and source */
static pthread_t ep0;
static pthread_t ccid_thread;
static pthread_t hidthread;
static int source_fd = -1;
static int sink_fd = -1;
static int status_fd = -1;
static int hidstatus_fd = -1;
// FIXME no result i/o yet
static void close_fd (void *fd_ptr)
{
int result, fd;
fd = *(int *)fd_ptr;
*(int *)fd_ptr = -1;
/* test the FIFO ioctls (non-ep0 code paths) */
if (pthread_self () != ep0) {
result = ioctl (fd, GADGETFS_FIFO_STATUS);
if (result < 0) {
/* ENODEV reported after disconnect */
if (errno != ENODEV && errno != EOPNOTSUPP)
perror ("get fifo result");
} else {
fprintf (stderr, "fd %d, unclaimed = %d\n",
fd, result);
if (result) {
result = ioctl (fd, GADGETFS_FIFO_FLUSH);
if (result < 0)
perror ("fifo flush");
}
}
}
if (close (fd) < 0)
perror ("close fd");
else
fprintf (stderr, "closed fd\n");
}
/* you should be able to open and configure endpoints
* whether or not the host is connected
*/
static int
ep_config (char *name, const char *label,
struct usb_endpoint_descriptor *fs,
struct usb_endpoint_descriptor *hs
)
{
int fd, result;
char buf [USB_BUFSIZE];
/* open and initialize with endpoint descriptor(s) */
fd = open (name, O_RDWR);
if (fd < 0) {
result = -errno;
fprintf (stderr, "%s open %s error %d (%s)\n",
label, name, errno, strerror (errno));
return result;
}
/* one (fs or ls) or two (fs + hs) sets of config descriptors */
*(__u32 *)buf = 1; /* tag for this format */
memcpy (buf + 4, fs, USB_DT_ENDPOINT_SIZE);
if (HIGHSPEED)
memcpy (buf + 4 + USB_DT_ENDPOINT_SIZE,
hs, USB_DT_ENDPOINT_SIZE);
result = write (fd, buf, 4 + USB_DT_ENDPOINT_SIZE
+ (HIGHSPEED ? USB_DT_ENDPOINT_SIZE : 0));
if (result < 0) {
result = -errno;
fprintf (stderr, "%s config %s error %d (%s)\n",
label, name, errno, strerror (errno));
close (fd);
return result;
} else if (debug) {
unsigned long id;
id = pthread_self ();
fprintf (stderr, "%s (%ld): fd %d\n", label, id, fd);
}
return fd;
}
#define source_open(name) \
ep_config(name,__FUNCTION__, &fs_source_desc, &hs_source_desc)
#define sink_open(name) \
ep_config(name,__FUNCTION__, &fs_sink_desc, &hs_sink_desc)
#define status_open(name) \
ep_config(name,__FUNCTION__, &fs_status_desc, &hs_status_desc)
#define hidstatus_open(name) \
ep_config(name,__FUNCTION__, &fs_hid_status_desc, &hs_hid_status_desc)
/* ccid thread, forwards ccid requests to pcsc and returns results */
static void *ccid (void *param)
{
//int tmp;
pthread_t interrupt_thread;
void *interrupt (void *param)
{
status_fd = status_open (((char **) param)[0]);
if (source_fd < 0) {
/* an error concerning status endpoint is not fatal for in/out bulk*/
/* transfer */
if (debug)
perror("status_fd");
pthread_exit(0);
}
pthread_cleanup_push (close_fd, &status_fd);
int result;
RDR_to_PC_NotifySlotChange_t slotchange;
do {
/* original LinuxThreads cancelation didn't work right */
/* so test for it explicitly. */
pthread_testcancel ();
slotchange = get_RDR_to_PC_NotifySlotChange();
if (slotchange.bmSlotICCState) {
/* don't bother host, when nothing changed */
if (debug)
fprintf(stderr, "interrupt loop: writing RDR_to_PC_NotifySlotChange... ");
result = write(status_fd, &slotchange, sizeof slotchange);
if (debug)
fprintf(stderr, "done.\n");
}
sleep(10);
} while (result >= 0);
if (errno != ESHUTDOWN || result < 0) {
perror ("interrupt loop aborted");
pthread_cancel(ccid_thread);
pthread_cancel(ep0);
}
pthread_cleanup_pop (1);
return 0;
}
void close_interrupt ()
{
if (doint) {
pthread_cancel(interrupt_thread);
if (pthread_join (interrupt_thread, 0) != 0)
perror ("can't join interrupt thread");
fprintf (stderr, "cancled interrupt loop\n");
}
}
void close_pcsc()
{
int result = perform_shutdown();
if (result != SCARD_S_SUCCESS)
fprintf(stderr, "pc/sc error: %s\n", pcsc_stringify_error(result));
else if (verbose)
fprintf(stderr, "closed connection to %s\n", usb_reader_name);
}
char **names = (char **) param;
char *source_name = names[0];
char *sink_name = names[1];
char *status_name = names[2];
int result;
source_fd = source_open (source_name);
if (source_fd < 0) {
if (debug)
perror("source_fd");
goto error;
}
pthread_cleanup_push (close_fd, &source_fd);
sink_fd = sink_open (sink_name);
if (sink_fd < 0) {
if (debug)
perror("sink_fd");
goto error;
}
pthread_cleanup_push (close_fd, &sink_fd);
usb_reader_name = perform_initialization(usb_reader_num);
if (usb_reader_name == NULL) {
if (debug)
perror("perform_initialization");
goto error;
}
pthread_cleanup_push (close_pcsc, NULL);
if (verbose)
fprintf (stderr, "connected to %s\n", usb_reader_name);
if (doint) {
static char * interruptnames[1];
interruptnames[0] = status_name;
if (pthread_create (&interrupt_thread, NULL, interrupt, (void *)
interruptnames) != 0) {
perror ("can't create interrupt thread");
goto error;
}
} else if (verbose) {
fprintf (stderr, "interrupt pipe disabled\n");
}
pthread_cleanup_push (close_interrupt, NULL);
__u8 *outbuf = NULL;
pthread_cleanup_push (free, outbuf);
size_t bufsize = 512;
__u8 *inbuf = (__u8 *) malloc(bufsize);
pthread_cleanup_push (free, inbuf);
if (inbuf == NULL) {
if (debug)
perror("malloc");
goto error;
}
do {
/* original LinuxThreads cancelation didn't work right
* so test for it explicitly.
*/
pthread_testcancel ();
if (debug)
fprintf(stderr, "reading %lu bytes... ", (long unsigned) bufsize);
result = read(sink_fd, inbuf, bufsize);
if (result < 0) break;
if (debug)
fprintf(stderr, "got %d, done.\n", result);
if (!result) break;
result = parse_ccid(inbuf, &outbuf);
if (result < 0) break;
if (debug)
fprintf(stderr, "writing %d bytes... ", result);
result = write(source_fd, outbuf, result);
if (debug)
fprintf(stderr, "done.\n");
} while (result >= 0);
if (errno != ESHUTDOWN || result < 0) {
perror ("ccid loop aborted");
pthread_cancel(ep0);
}
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
fflush (stdout);
fflush (stderr);
return 0;
error:
pthread_cancel(ep0);
pthread_exit(0);
}
static void *hid (void *param)
{
char **names = (char **) param;
char *status_name = names[0];
int result = 0;
hidstatus_fd = hidstatus_open (status_name);
if (hidstatus_fd < 0) {
if (debug)
perror("hidstatus_fd");
goto error;
}
pthread_cleanup_push (close_fd, &hidstatus_fd);
__u8 *outbuf = NULL;
pthread_cleanup_push (free, outbuf);
size_t bufsize = 512;
__u8 *inbuf = (__u8 *) malloc(bufsize);
pthread_cleanup_push (free, inbuf);
if (inbuf == NULL) {
if (debug)
perror("malloc");
goto error;
}
do {
/* original LinuxThreads cancelation didn't work right
* so test for it explicitly.
*/
pthread_testcancel ();
} while (result >= 0);
if (errno != ESHUTDOWN || result < 0) {
perror ("hid loop aborted");
pthread_cancel(ep0);
}
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
fflush (stdout);
fflush (stderr);
return 0;
error:
pthread_cancel(ep0);
pthread_exit(0);
}
static void start_io ()
{
//int tmp;
sigset_t allsig, oldsig;
#ifdef AIO
/* iso uses the same API as bulk/interrupt. we queue one
* (u)frame's worth of data per i/o request, and the host
* polls that queue once per interval.
*/
switch (current_speed) {
case USB_SPEED_FULL:
if (iso)
iosize = __le16_to_cpup (&fs_source_desc
.wMaxPacketSize);
else
iosize = bufsize;
break;
case USB_SPEED_HIGH:
/* for iso, we updated bufsize earlier */
iosize = bufsize;
break;
default:
fprintf (stderr, "bogus link speed %d\n", current_speed);
return;
}
#endif /* AIO */
sigfillset (&allsig);
errno = pthread_sigmask (SIG_SETMASK, &allsig, &oldsig);
if (errno < 0) {
perror ("set thread signal mask");
return;
}
/* is it true that the LSB requires programs to disconnect
* from their controlling tty before pthread_create()?
* why? this clearly doesn't ...
*/
static char *names[2];
names[0] = EP_IN_NAME;
names[1] = EP_OUT_NAME;
names[2] = EP_STATUS_NAME;
if (pthread_create (&ccid_thread, NULL, ccid, (void *) names) != 0) {
perror ("can't create ccid thread");
goto cleanup;
}
static char * hidnames[1];
hidnames[0] = EP_HID_STATUS_NAME;
if (dohid) {
config.bNumInterfaces = 2;
if (pthread_create (&hidthread, NULL, hid, (void *)
hidnames) != 0) {
perror ("can't create hid thread");
goto cleanup;
}
} else {
if (verbose)
fprintf (stderr, "HID disabled.\n");
}
/* give the other threads a chance to run before we report
* success to the host.
* FIXME better yet, use pthread_cond_timedwait() and
* synchronize on ep config success.
*/
sched_yield ();
cleanup:
errno = pthread_sigmask (SIG_SETMASK, &oldsig, 0);
if (errno != 0) {
perror ("restore sigmask");
exit (-1);
}
}
static void stop_io ()
{
if (!pthread_equal (ccid_thread, ep0)) {
pthread_cancel (ccid_thread);
if (pthread_join (ccid_thread, 0) != 0)
perror ("can't join ccid thread");
ccid_thread = ep0;
fprintf (stderr, "cancled ccid\n");
}
if (!pthread_equal (ccid_thread, ep0)) {
pthread_cancel (hidthread);
if (pthread_join (hidthread, 0) != 0)
perror ("can't join hid thread");
hidthread = ep0;
fprintf (stderr, "cancled hid\n");
}
}
/*-------------------------------------------------------------------------*/
static char *
build_config (char *cp, const struct usb_endpoint_descriptor **ep, const struct usb_endpoint_descriptor *hid_ep)
{
struct usb_config_descriptor *c;
int i;
c = (struct usb_config_descriptor *) cp;
memcpy (cp, &config, config.bLength);
cp += config.bLength;
memcpy (cp, &source_sink_intf, sizeof source_sink_intf);
cp += sizeof source_sink_intf;
// Append vendor class specification
memcpy (cp, &ccid_desc, sizeof ccid_desc);
cp += sizeof ccid_desc;
for (i = 0; i < source_sink_intf.bNumEndpoints; i++) {
memcpy (cp, ep [i], USB_DT_ENDPOINT_SIZE);
cp += USB_DT_ENDPOINT_SIZE;
}
if (dohid) {
struct usb_interface_descriptor hid_intf = {
.bLength = sizeof hid_intf,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 1,
.bInterfaceClass = USB_CLASS_HID,
.iInterface = STRINGID_HID_INTERFACE,
.bNumEndpoints = 1,
};
memcpy (cp, &hid_intf, sizeof hid_intf);
cp += sizeof hid_intf;
// Append vendor class specification
memcpy (cp, &hid_desc, sizeof hid_desc);
cp += sizeof hid_desc;
for (i = 0; i < hid_intf.bNumEndpoints; i++) {
memcpy (cp, &(hid_ep [i]), USB_DT_ENDPOINT_SIZE);
cp += USB_DT_ENDPOINT_SIZE;
}
}
c->wTotalLength = __cpu_to_le16 (cp - (char *) c);
return cp;
}
static int init_device (void)
{
char buf [4096], *cp = &buf [0];
int fd;
int result;
#ifdef AIO
if (iso)
result = iso_autoconfig ();
else
#endif
result = autoconfig ();
if (result < 0) {
fprintf (stderr, "?? don't recognize /dev/gadget %s device\n",
iso ? "iso" : "bulk");
return result;
}
fd = open (DEVNAME, O_RDWR);
if (fd < 0) {
perror (DEVNAME);
return -errno;
}
*(__u32 *)cp = 0; /* tag for this format */
cp += 4;
/* write full then high speed configs */
cp = build_config (cp, fs_eps, &fs_hid_status_desc);
if (HIGHSPEED)
cp = build_config (cp, hs_eps, &hs_hid_status_desc);
device_desc.idVendor = __cpu_to_le16 (vendorid);
device_desc.idProduct = __cpu_to_le16 (productid);
if (verbose) {
fprintf(stderr, "idVendor=%04X idProduct=%04X\n", vendorid,
productid);
}
/* and device descriptor at the end */
memcpy (cp, &device_desc, sizeof device_desc);
cp += sizeof device_desc;
result = write (fd, &buf [0], cp - &buf [0]);
if (result < 0) {
perror ("write dev descriptors");
close (fd);
return result;
} else if (result != (cp - buf)) {
fprintf (stderr, "dev init, wrote %d expected %ld\n",
result, (long int) (cp - buf));
close (fd);
return -EIO;
}
return fd;
}
static void handle_control (int fd, struct usb_ctrlrequest *setup)
{
int result, tmp;
__u8 buf [256];
__u16 value, index, length;
value = __le16_to_cpu(setup->wValue);
index = __le16_to_cpu(setup->wIndex);
length = __le16_to_cpu(setup->wLength);
if ((setup->bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD)
goto special;
switch (setup->bRequest) { /* usb 2.0 spec ch9 requests */
case USB_REQ_GET_DESCRIPTOR:
if (debug)
fprintf(stderr, "USB_REQ_GET_DESCRIPTOR\n");
if (setup->bRequestType != USB_DIR_IN)
goto stall;
switch (value >> 8) {
case USB_DT_STRING:
tmp = value & 0x0ff;
if (debug)
fprintf (stderr,
"... get string %d lang %04x\n",
tmp, index);
if (tmp != 0 && index != strings.language) {
fprintf (stderr, "wrong language\n");
goto stall;
}
memset (buf, 0, 256); /* zero all the bytes */
result = usb_gadget_get_string (&strings, tmp, buf);
if (result < 0) {
perror("usb_gadget_get_string");
goto stall;
}
tmp = result;
if (length < tmp)
tmp = length;
result = write (fd, buf, tmp);
if (result < 0) {
if (errno == EIDRM)
fprintf (stderr, "string timeout\n");
else
perror ("write string data");
} else if (result != tmp) {
fprintf (stderr, "short string write, %d\n",
result);
}
break;
default:
goto stall;
}
return;
case USB_REQ_SET_CONFIGURATION:
if (debug)
fprintf (stderr, "USB_REQ_SET_CONFIGURATION #%d\n", value);
if (setup->bRequestType != USB_DIR_OUT)
goto stall;
/* Kernel is normally waiting for us to finish reconfiguring
* the device.
*
* Some hardware can't, notably older PXA2xx hardware. (With
* racey and restrictive config change automagic. PXA 255 is
* OK, most PXA 250s aren't. If it has a UDC CFR register,
* it can handle deferred response for SET_CONFIG.) To handle
* such hardware, don't write code this way ... instead, keep
* the endpoints always active and don't rely on seeing any
* config change events, either this or SET_INTERFACE.
*/
switch (value) {
case CONFIG_VALUE:
if ( source_fd >= 0 || sink_fd >= 0 || status_fd >= 0 || hidstatus_fd >= 0 )
stop_io ();
start_io ();
break;
case 0:
stop_io ();
break;
default:
/* kernel bug -- "can't happen" */
fprintf (stderr, "? illegal config\n");
goto stall;
}
/* ... ack (a write would stall) */
result = read (fd, &result, 0);
if (result)
perror ("ack SET_CONFIGURATION");
return;
case USB_REQ_GET_INTERFACE:
if (debug)
fprintf (stderr, "USB_REQ_GET_INTERFACE\n");
if (setup->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE)
|| index != 0
|| length > 1)
goto stall;
/* only one altsetting in this driver */
buf [0] = 0;
result = write (fd, buf, length);
if (result < 0) {
if (errno == EIDRM)
fprintf (stderr, "GET_INTERFACE timeout\n");
else
perror ("write GET_INTERFACE data");
} else if (result != length) {
fprintf (stderr, "short GET_INTERFACE write, %d\n",
result);
}
return;
case USB_REQ_SET_INTERFACE:
if (debug)
fprintf (stderr, "USB_REQ_SET_INTERFACE\n");
if (setup->bRequestType != USB_RECIP_INTERFACE
|| index != 0
|| value != 0)
goto stall;
/* just reset toggle/halt for the interface's endpoints */
result = 0;
if (ioctl (source_fd, GADGETFS_CLEAR_HALT) < 0) {
result = errno;
perror ("reset source fd");
}
if (ioctl (sink_fd, GADGETFS_CLEAR_HALT) < 0) {
result = errno;
perror ("reset sink fd");
}
if (status_fd > 0) {
if (ioctl (status_fd, GADGETFS_CLEAR_HALT) < 0) {
result = errno;
perror ("reset status fd");
}
}
if (hidstatus_fd > 0) {
if (ioctl (hidstatus_fd, GADGETFS_CLEAR_HALT) < 0) {
result = errno;
perror ("reset hidstatus fd");
}
}
/* FIXME eventually reset the result endpoint too */
if (result)
goto stall;
/* ... and ack (a write would stall) */
result = read (fd, &result, 0);
if (result)
perror ("ack SET_INTERFACE");
return;
default:
goto stall;
}
special:
switch (setup->bRequestType) {
case USB_REQ_CCID: {
__u8 *outbuf = NULL;
result = parse_ccid_control(setup, &outbuf);
if (result < 0 || result > 256)
goto stall;
if (debug)
fprintf(stderr, "writing %d bytes... ", result);
result = write (fd, outbuf, result);
if (debug)
fprintf(stderr, "done.\n");
free(outbuf);
if (result < 0)
goto stall;
} return;
default:
goto stall;
}
stall:
if (verbose) {
fprintf(stderr, "%s:%d\n", __FILE__, __LINE__);
fprintf (stderr, "... protocol stall %02x.%02x\n",
setup->bRequestType, setup->bRequest);
for (tmp = 0; tmp<5; tmp++) {
printf("%d: %s\n", stringtab[tmp].id, stringtab[tmp].s);
}
}
/* non-iso endpoints are stalled by issuing an i/o request
* in the "wrong" direction. ep0 is special only because
* the direction isn't fixed.
*/
if (setup->bRequestType & USB_DIR_IN)
result = read (fd, &result, 0);
else
result = write (fd, &result, 0);
if (result != -1)
fprintf (stderr, "can't stall ep0 for %02x.%02x\n",
setup->bRequestType, setup->bRequest);
else if (errno != EL2HLT)
perror ("ep0 stall");
}
static void signothing (int sig, siginfo_t *info, void *ptr)
{
/* NOP */
if (debug)
fprintf (stderr, "%s %d\n", __FUNCTION__, sig);
}
static const char *speed (enum usb_device_speed s)
{
switch (s) {
case USB_SPEED_LOW: return "low speed";
case USB_SPEED_FULL: return "full speed";
case USB_SPEED_HIGH: return "high speed";
default: return "UNKNOWN speed";
}
}
/*-------------------------------------------------------------------------*/
/* control thread, handles main event loop */
#define NEVENT 5
#define LOGDELAY (15 * 60) /* seconds before stdout timestamp */
static void *ep0_thread (void *param)
{
int fd = *(int*) param;
struct sigaction action;
time_t now, last;
struct pollfd ep0_poll;
ccid_thread = ep0 = pthread_self ();
pthread_cleanup_push (close_fd, param);
pthread_cleanup_push (stop_io, NULL);
/* REVISIT signal handling ... normally one pthread should
* be doing sigwait() to handle all async signals.
*/
action.sa_sigaction = signothing;
sigfillset (&action.sa_mask);
action.sa_flags = SA_SIGINFO;
if (sigaction (SIGINT, &action, NULL) < 0) {
perror ("SIGINT");
return 0;
}
if (sigaction (SIGQUIT, &action, NULL) < 0) {
perror ("SIGQUIT");
return 0;
}
ep0_poll.fd = fd;
ep0_poll.events = POLLIN | POLLOUT | POLLHUP;
/* event loop */
last = 0;
for (;;) {
int tmp;
struct usb_gadgetfs_event event [NEVENT];
int connected = 0;
int i, nevent;
/* Use poll() to test that mechanism, to generate
* activity timestamps, and to make it easier to
* tweak this code to work without pthreads. When
* AIO is needed without pthreads, ep0 can be driven
* instead using SIGIO.
*/
tmp = poll(&ep0_poll, 1, -1);
if (verbose) {
time (&now);
if ((now - last) > LOGDELAY) {
char timebuf[26];
last = now;
ctime_r (&now, timebuf);
printf ("\n** %s", timebuf);
}
}
if (tmp < 0) {
/* exit path includes EINTR exits */
perror("poll");
break;
}
tmp = read (fd, &event, sizeof event);
if (tmp < 0) {
if (errno == EAGAIN) {
sleep (1);
continue;
}
perror ("ep0 read after poll");
goto done;
}
nevent = tmp / sizeof event [0];
if (nevent != 1 && debug)
fprintf (stderr, "read %d ep0 events\n",
nevent);
for (i = 0; i < nevent; i++) {
switch (event [i].type) {
case GADGETFS_NOP:
if (verbose)
fprintf (stderr, "NOP\n");
break;
case GADGETFS_CONNECT:
connected = 1;
current_speed = event [i].u.speed;
if (verbose)
fprintf (stderr,
"CONNECT %s\n",
speed (event [i].u.speed));
break;
case GADGETFS_SETUP:
connected = 1;
handle_control (fd, &event [i].u.setup);
break;
case GADGETFS_DISCONNECT:
connected = 0;
current_speed = USB_SPEED_UNKNOWN;
if (verbose)
fprintf(stderr, "DISCONNECT\n");
stop_io ();
break;
case GADGETFS_SUSPEND:
// connected = 1;
if (verbose)
fprintf (stderr, "SUSPEND\n");
break;
default:
fprintf (stderr,
"* unhandled event %d\n",
event [i].type);
}
}
continue;
done:
fflush (stdout);
if (connected)
stop_io ();
break;
}
if (verbose)
fprintf (stderr, "ep0 done.\n");
pthread_cleanup_pop (1);
pthread_cleanup_pop (1);
fflush (stdout);
fflush (stderr);
return 0;
}
/*-------------------------------------------------------------------------*/
int
main (int argc, char **argv)
{
int fd, c, i;
/* random initial serial number */
srand ((int) time (0));
for (i = 0; i < sizeof serial - 1; ) {
c = rand () % 127;
if ((('a' <= c && c <= 'z') || ('0' <= c && c <= '9')))
serial [i++] = c;
}
for (i=1; i<argc; i++)
{
if (sscanf(argv[i], "--vendor=%x", &vendorid) == 1) continue;
if (sscanf(argv[i], "--product=%x", &productid) == 1) continue;
if (sscanf(argv[i], "--reader=%d", &usb_reader_num) == 1) continue;
if (strcmp(argv[i], "-r") == 0) {
i++;
if (sscanf(argv[i], "%d", &usb_reader_num) != 1) {
fprintf(stderr, "integer expected: \"%s\"\n", argv[i]);
return 1;
}
continue;
}
if (sscanf(argv[i], "--serial=%56s", serial) == 1) continue;
if (strcmp(argv[i], "-s") == 0) {
i++;
if (sscanf(argv[i], "%56s", serial) != 1) {
fprintf(stderr, "string (max 56 bytes) expected: \"%s\"\n", argv[i]);
return 1;
}
continue;
}
if ((strcmp(argv[i], "--verbose") == 0) ||
(strcmp(argv[i], "-v") == 0) ||
(strcmp(argv[i], "--debug") == 0) ||
(strcmp(argv[i], "-d") == 0)) {
verbose++;
if ((strcmp(argv[i], "--debug") == 0) ||
(strcmp(argv[i], "-d") == 0))
debug++;
continue;
}
if (strcmp(argv[i], "--hid") == 0) {
dohid++;
continue;
}
if (strcmp(argv[i], "--int") == 0) {
doint++;
continue;
}
if ((strcmp(argv[i], "--help") == 0) ||
(strcmp(argv[i], "-h") == 0)) {
fprintf(stderr,
"%s emulates an CCID USB device. The program connects to a PC/SC smartcard reader and forwards USB requests to this particular reader. Changing the vendor or product ID of the CCID reader will modify the USB device descriptor, but it will not effect the execution of the program.\n"
"\n"
"Usage: %s [Options]\n"
"\n"
"Options:\n"
" -h, --help show this help message and exit\n"
" -r, --reader=READER number of reader to use [default: 0]\n"
" -s, --serial=SERIAL serial number of gadget [default: random]\n"
" -v, --verbose more verbosity\n"
" -d, --debug even more verbosity in combination with `-v'\n"
" --version print version information and exit\n"
" --hid emulate HID device\n"
" --int add interrupt pipe for CCID\n"
" --vendor=0xVENDOR USB vendor ID [default:%x]\n"
" --product=0xPRODUCT USB product ID [default:%x]\n"
, argv[0], argv[0], DRIVER_VENDOR_NUM, DRIVER_PRODUCT_NUM
);
return 0;
}
if (strcmp(argv[i], "--version") == 0) {
fprintf(stderr,
"%s 0.9\n"
"\n"
"Written by Frank Morgner.\n"
, argv[0]
);
return 0;
}
fprintf(stderr, "unrecognized option \"%s\"\n", argv[i]);
return 1;
}
if (verbose)
fprintf (stderr, "serial=\"%s\"\n", serial);
if (chdir ("/dev/gadget") < 0) {
perror ("can't chdir /dev/gadget");
return 1;
}
fd = init_device ();
if (fd < 0)
return 1;
if (debug)
fprintf (stderr, "/dev/gadget/%s ep0 configured\n", DEVNAME);
fflush (stdout);
fflush (stderr);
(void) ep0_thread (&fd);
return 0;
}
Reference in New Issue View Git Blame Copy Permalink