int os_usbrecv(usbdevice* kb, uchar* in_msg, const char* file, int line){
DELAY_MEDIUM(kb);
int res;
if(kb->fwversion >= 0x130){
struct usbdevfs_bulktransfer transfer;
memset(&transfer, 0, sizeof(transfer));
transfer.ep = 0x84;
transfer.len = MSG_SIZE;
transfer.timeout = 5000;
transfer.data = in_msg;
res = ioctl(kb->handle, USBDEVFS_BULK, &transfer);
} else {
struct usbdevfs_ctrltransfer transfer = { 0xa1, 0x01, 0x0300, 0x03, MSG_SIZE, 5000, in_msg };
res = ioctl(kb->handle, USBDEVFS_CONTROL, &transfer);
}
if(res <= 0){
if(res == -1 && errno == ETIMEDOUT){
ckb_warn_fn("%s (continuing)\n", file, line, strerror(errno));
return -1;
}
ckb_err_fn("%s\n", file, line, res ? strerror(errno) : "No data read");
return 0;
} else if(res != MSG_SIZE)
ckb_warn_fn("Read %d bytes (expected %d)\n", file, line, res, MSG_SIZE);
return res;
}
int _usbrecv(usbdevice* kb, const uchar* out_msg, uchar* in_msg, const char* file, int line){
// Try a maximum of 3 times
for(int try = 0; try < 5; try++){
// Send the output message
DELAY_SHORT(kb);
int res = os_usbsend(kb, out_msg, 1, file, line);
if(res == 0)
return 0;
else if(res == -1){
// Retry on temporary failure
if(reset_stop)
return 0;
DELAY_LONG(kb);
continue;
}
// Wait for the response
DELAY_MEDIUM(kb);
res = os_usbrecv(kb, in_msg, file, line);
if(res == 0)
return 0;
else if(res != -1)
return res;
if(reset_stop || hwload_mode != 2)
return 0;
DELAY_LONG(kb);
}
// Give up
ckb_err_fn("Too many send/recv failures. Dropping.\n", file, line);
return 0;
}
int closeusb(usbdevice* kb){
pthread_mutex_lock(imutex(kb));
if(kb->handle){
int index = INDEX_OF(kb, keyboard);
ckb_info("Disconnecting %s%d\n", devpath, index);
os_inputclose(kb);
updateconnected();
// Close USB device
os_closeusb(kb);
} else
updateconnected();
rmdevpath(kb);
// Wait for thread to close
pthread_mutex_unlock(imutex(kb));
pthread_mutex_unlock(dmutex(kb));
pthread_join(kb->thread, 0);
pthread_mutex_lock(dmutex(kb));
// Delete the profile and the control path
if(!kb->vtable)
return 0;
kb->vtable->freeprofile(kb);
memset(kb, 0, sizeof(usbdevice));
return 0;
}
