Add derived UsbTransport class with USB reset method

For testing there needs to be a way to simulate unplugging and
replugging a device. This change adds support for a USB reset
method that does this.

Also add timeouts, so USB reads/writes don't block forever
on an unresponsive device.

Test: glinux, fastboot tool still works
Test: Reset confirmed working via wireshark Linux URB captures

Change-Id: I7213a2395d4ef1c0238810e4929ab966e78c8b55

1 files changed, 9 insertions, 3 deletions

diff --git a/fastboot/usb_windows.cpp b/fastboot/usb_windows.cpp
index 0e5fba125..8c60a7173 100644
--- a/fastboot/usb_windows.cpp
+++ b/fastboot/usb_windows.cpp
@@ -66,7 +66,7 @@ struct usb_handle {
     std::string interface_name;
 };
 
-class WindowsUsbTransport : public Transport {
+class WindowsUsbTransport : public UsbTransport {
   public:
     WindowsUsbTransport(std::unique_ptr<usb_handle> handle) : handle_(std::move(handle)) {}
     ~WindowsUsbTransport() override = default;
@@ -74,6 +74,7 @@ class WindowsUsbTransport : public Transport {
     ssize_t Read(void* data, size_t len) override;
     ssize_t Write(const void* data, size_t len) override;
     int Close() override;
+    int Reset() override;
 
   private:
     std::unique_ptr<usb_handle> handle_;
@@ -261,6 +262,12 @@ int WindowsUsbTransport::Close() {
     return 0;
 }
 
+int WindowsUsbTransport::Reset() {
+    DBG("usb_reset currently unsupported\n\n");
+    // TODO, this is a bit complicated since it is using ADB
+    return -1;
+}
+
 int recognized_device(usb_handle* handle, ifc_match_func callback) {
     struct usb_ifc_info info;
     USB_DEVICE_DESCRIPTOR device_desc;
@@ -366,8 +373,7 @@ static std::unique_ptr<usb_handle> find_usb_device(ifc_match_func callback) {
     return handle;
 }
 
-Transport* usb_open(ifc_match_func callback)
-{
+UsbTransport* usb_open(ifc_match_func callback, uint32_t) {
     std::unique_ptr<usb_handle> handle = find_usb_device(callback);
     return handle ? new WindowsUsbTransport(std::move(handle)) : nullptr;
 }