int32
SerialDevice::DeviceThread(void *data)
{
SerialDevice *device = (SerialDevice *)data;
while (!device->fStopDeviceThread) {
status_t status = gUSBModule->queue_bulk(device->fReadPipe,
device->fReadBuffer, device->fReadBufferSize,
device->ReadCallbackFunction, data);
if (status < B_OK) {
TRACE_ALWAYS("device thread: queueing failed with error: 0x%08x\n", status);
break;
}
status = acquire_sem_etc(device->fDoneRead, 1, B_CAN_INTERRUPT, 0);
if (status < B_OK) {
TRACE_ALWAYS("device thread: failed to get read done sem 0x%08x\n", status);
break;
}
if (device->fStatusRead != B_OK) {
TRACE("device thread: device status error 0x%08x\n",
device->fStatusRead);
if (gUSBModule->clear_feature(device->fReadPipe,
USB_FEATURE_ENDPOINT_HALT) != B_OK) {
TRACE_ALWAYS("device thread: failed to clear halt feature\n");
break;
}
}
char *buffer = device->fReadBuffer;
size_t readLength = device->fActualLengthRead;
device->OnRead(&buffer, &readLength);
if (readLength == 0)
continue;
ddrover *ddr = gTTYModule->ddrstart(NULL);
if (!ddr) {
TRACE_ALWAYS("device thread: ddrstart problem\n");
return B_NO_MEMORY;
}
while (device->fInputStopped)
snooze(100);
gTTYModule->ttyilock(&device->fTTY, ddr, true);
for (size_t i = 0; i < readLength; i++)
gTTYModule->ttyin(&device->fTTY, ddr, buffer[i]);
gTTYModule->ttyilock(&device->fTTY, ddr, false);
gTTYModule->ddrdone(ddr);
}
return B_OK;
}
int32
SerialDevice::_InputThread(void *data)
{
SerialDevice *device = (SerialDevice *)data;
while (!device->fStopThreads) {
status_t status = gUSBModule->queue_bulk(device->fReadPipe,
device->fReadBuffer, device->fReadBufferSize,
device->_ReadCallbackFunction, data);
if (status < B_OK) {
TRACE_ALWAYS("input thread: queueing failed with error: 0x%08x\n",
status);
return status;
}
status = acquire_sem_etc(device->fDoneRead, 1, B_CAN_INTERRUPT, 0);
if (status < B_OK) {
TRACE_ALWAYS("input thread: failed to get read done sem 0x%08x\n",
status);
return status;
}
if (device->fStatusRead != B_OK) {
TRACE("input thread: device status error 0x%08x\n",
device->fStatusRead);
if (device->fStatusRead == B_DEV_STALLED
&& gUSBModule->clear_feature(device->fReadPipe,
USB_FEATURE_ENDPOINT_HALT) != B_OK) {
TRACE_ALWAYS("input thread: failed to clear halt feature\n");
return B_ERROR;
}
continue;
}
char *buffer = device->fReadBuffer;
size_t readLength = device->fActualLengthRead;
device->OnRead(&buffer, &readLength);
if (readLength == 0)
continue;
while (device->fInputStopped)
snooze(100);
status = gTTYModule->tty_write(device->fDeviceTTYCookie, buffer,
&readLength);
if (status != B_OK) {
TRACE_ALWAYS("input thread: failed to write into TTY\n");
return status;
}
}
return B_OK;
}