jlink libusb-1.0 driver.

jlink modified to use the new usb abstaction layer.
During the configuration process we can select if use
libusb0 or libusb-1.0 library for this driver.

Change-Id: I70bc9ee2f89b7597e0f64ea80cad7f1b9070f01b
Signed-off-by: Mauro Gamba <maurillo71@gmail.com>
Reviewed-on: http://openocd.zylin.com/236


Tested-by: jenkins
Reviewed-by: Xiaofan <xiaofanc@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

configure.ac

@@ -1056,7 +1056,7 @@ fi
 
 # check for usb.h when a driver will require it
 build_usb=no
-if test $build_jlink = yes -o $build_vsllink = yes -o $build_usbprog = yes -o \
+if test $build_vsllink = yes -o $build_usbprog = yes -o \
   $build_rlink = yes -o $build_ulink = yes -o $build_armjtagew = yes
 then
   build_usb=yes
@@ -1064,6 +1064,9 @@ fi
 
 # Check for libusb1 ported drivers.
 build_usb_ng=no
+if test $build_jlink = yes; then
+  build_usb_ng=yes
+fi
 
 # check for libusb library if necessary
 use_libusb0=no

src/jtag/drivers/jlink.c

@@ -30,7 +30,7 @@
 
 #include <jtag/interface.h>
 #include <jtag/commands.h>
-#include "usb_common.h"
+#include "libusb_common.h"
 
 /* See Segger's public documentation:
  *	Reference manual for J-Link USB Protocol
@@ -199,7 +199,7 @@ static void jlink_tap_append_scan(int length, uint8_t *buffer,
 
 /* Jlink lowlevel functions */
 struct jlink {
-	struct usb_dev_handle* usb_handle;
+	struct jtag_libusb_device_handle *usb_handle;
 };
 
 static struct jlink *jlink_usb_open(void);
@@ -1407,10 +1407,8 @@ static int jlink_tap_execute(void)
 
 static struct jlink* jlink_usb_open()
 {
-	usb_init();
-
-	struct usb_dev_handle *dev;
-	if (jtag_usb_open(vids, pids, &dev) != ERROR_OK)
+	struct jtag_libusb_device_handle *devh;
+	if (jtag_libusb_open(vids, pids, &devh) != ERROR_OK)
 		return NULL;
 
 	/* BE ***VERY CAREFUL*** ABOUT MAKING CHANGES IN THIS
@@ -1426,7 +1424,7 @@ static struct jlink* jlink_usb_open()
 
 #if IS_WIN32 == 0
 
-	usb_reset(dev);
+	jtag_libusb_reset_device(devh);
 
 #if IS_DARWIN == 0
 
@@ -1434,7 +1432,7 @@ static struct jlink* jlink_usb_open()
 	/* reopen jlink after usb_reset
 	 * on win32 this may take a second or two to re-enumerate */
 	int retval;
-	while ((retval = jtag_usb_open(vids, pids, &dev)) != ERROR_OK)
+	while ((retval = jtag_libusb_open(vids, pids, &devh)) != ERROR_OK)
 	{
 		usleep(1000);
 		timeout--;
@@ -1449,9 +1447,9 @@ static struct jlink* jlink_usb_open()
 #endif
 
 	/* usb_set_configuration required under win32 */
-	struct usb_device *udev = usb_device(dev);
-	usb_set_configuration(dev, udev->config[0].bConfigurationValue);
-	usb_claim_interface(dev, 0);
+	struct jtag_libusb_device *udev = jtag_libusb_get_device(devh);
+	jtag_libusb_set_configuration(devh, 0);
+	jtag_libusb_claim_interface(devh, 0);
 
 #if 0
 	/*
@@ -1460,27 +1458,17 @@ static struct jlink* jlink_usb_open()
 	 */
 	usb_set_altinterface(result->usb_handle, 0);
 #endif
-	struct usb_interface *iface = udev->config->interface;
-	struct usb_interface_descriptor *desc = iface->altsetting;
-	for (int i = 0; i < desc->bNumEndpoints; i++)
-	{
-		uint8_t epnum = desc->endpoint[i].bEndpointAddress;
-		bool is_input = epnum & 0x80;
-		LOG_DEBUG("usb ep %s %02x", is_input ? "in" : "out", epnum);
-		if (is_input)
-			jlink_read_ep = epnum;
-		else
-			jlink_write_ep = epnum;
-	}
+
+	jtag_libusb_get_endpoints(udev, &jlink_read_ep, &jlink_write_ep);
 
 	struct jlink *result = malloc(sizeof(struct jlink));
-	result->usb_handle = dev;
+	result->usb_handle = devh;
 	return result;
 }
 
 static void jlink_usb_close(struct jlink *jlink)
 {
-	usb_close(jlink->usb_handle);
+	jtag_libusb_close(jlink->usb_handle);
 	free(jlink);
 }
 
@@ -1548,8 +1536,8 @@ static int jlink_usb_message(struct jlink *jlink, int out_length, int in_length)
 /* calls the given usb_bulk_* function, allowing for the data to
  * trickle in with some timeouts  */
 static int usb_bulk_with_retries(
-		int (*f)(usb_dev_handle *, int, char *, int, int),
-		usb_dev_handle *dev, int ep,
+		int (*f)(jtag_libusb_device_handle *, int, char *, int, int),
+		jtag_libusb_device_handle *dev, int ep,
 		char *bytes, int size, int timeout)
 {
 	int tries = 3, count = 0;
@@ -1565,24 +1553,24 @@ static int usb_bulk_with_retries(
 	return count;
 }
 
-static int wrap_usb_bulk_write(usb_dev_handle *dev, int ep,
+static int wrap_usb_bulk_write(jtag_libusb_device_handle *dev, int ep,
 			       char *buff, int size, int timeout)
 {
 	/* usb_bulk_write() takes const char *buff */
-	return usb_bulk_write(dev, ep, buff, size, timeout);
+	return jtag_libusb_bulk_write(dev, ep, buff, size, timeout);
 }
 
-static inline int usb_bulk_write_ex(usb_dev_handle *dev, int ep,
+static inline int usb_bulk_write_ex(jtag_libusb_device_handle *dev, int ep,
 		char *bytes, int size, int timeout)
 {
 	return usb_bulk_with_retries(&wrap_usb_bulk_write,
 			dev, ep, bytes, size, timeout);
 }
 
-static inline int usb_bulk_read_ex(usb_dev_handle *dev, int ep,
+static inline int usb_bulk_read_ex(jtag_libusb_device_handle *dev, int ep,
 		char *bytes, int size, int timeout)
 {
-	return usb_bulk_with_retries(&usb_bulk_read,
+	return usb_bulk_with_retries(&jtag_libusb_bulk_read,
 			dev, ep, bytes, size, timeout);
 }