osmo-ttcn3-hacks/library/SIMTRACE_Emulation.ttcn

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module SIMTRACE_Emulation {
import from General_Types all;
import from Osmocom_Types all;
import from Misc_Helpers all;
import from USB_PortType all;
import from USB_Types all;
import from USB_Templates all;
import from USB_Component all;
import from USB_PortTypes all;
import from SIMTRACE_Types all;
import from SIMTRACE_Templates all;
/* one USB interface */
type component ST_Emulation_CT extends USB_CT {
var integer g_ep_in;
var integer g_ep_out;
var integer g_ep_irq;
var USB_IF_Params g_pars;
port ST_USER_PT INOUT;
port ST_USER_PT IRQ;
};
type port ST_USER_PT message {
inout SIMTRACE_PDU;
} with { extension "internal" };
/* configuration for a ST_Emulation_CT */
type record USB_IF_Params {
USB_Device_Match usb_dev_match,
integer usb_if_nr
};
private const octetstring c_oct261 := '000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'O;
private function f_usb_submit_xfer(USB_endpoint ep, octetstring data := c_oct261,
USB_transfer_type ttype := USB_TRANSFER_TYPE_BULK,
integer tout_ms := 30000) runs on USB_CT
{
var integer req_hdl := f_usb_get_req_hdl();
var USB_transfer xfer := {
device_hdl := g_dev_hdl,
transfer_hdl := req_hdl,
endpoint := ep,
ttype := ttype,
data := data,
timeout_msec := tout_ms
};
USB.send(xfer);
}
/* open libusb device; claim interface; resolve endpoints; submit IN/IRQ transfers */
function main(USB_IF_Params pars) runs on ST_Emulation_CT {
var USB_Descriptor_Node root;
var integer i_config;
var integer i;
g_pars := pars;
f_usb_init(g_pars.usb_dev_match);
i_config := f_usb_get_config();
log("USB Configuration: ", i_config);
root := f_usb_get_desc_tree();
log(root);
/* iterate over list of interfaces in current configuration */
for (i := 0; i < lengthof(root.children[i_config].children); i:=i+1) {
var USB_Descriptor_Node ifn := root.children[i_config].children[i];
var USB_InterfaceDescriptor ifd := ifn.desc.interface;
var integer j;
if (ifd.bInterfaceNumber != g_pars.usb_if_nr) {
continue;
}
/* determine endpoints inside interface */
for (j := 0; j < lengthof(ifn.children); j:=j+1) {
if (ischosen(ifn.children[j].desc.endpoint)) {
var USB_EndpointDescriptor epd := ifn.children[j].desc.endpoint;
select (epd.bmAttributes.TranferType) {
case (USB_EpTransfer_BULK) {
if (epd.bEndpointAddress and4b '80'O == '80'O) {
g_ep_in := oct2int(epd.bEndpointAddress);
} else {
g_ep_out := oct2int(epd.bEndpointAddress);
}
}
case (USB_EpTransfer_INTERRUPT) {
g_ep_irq := oct2int(epd.bEndpointAddress);
}
}
}
}
}
log("USB Endpoints found: IN: ", int2oct(g_ep_in, 1), ", OUT: ", int2oct(g_ep_out, 1),
" IRQ: ", int2oct(g_ep_irq, 1));
f_usb_claim_interface(g_dev_hdl, g_pars.usb_if_nr);
/* submit xfer fro IN and IRQ endpoints */
f_usb_submit_xfer(g_ep_in);
f_usb_submit_xfer(g_ep_irq, ttype := USB_TRANSFER_TYPE_INTERRUPT);
var USB_transfer_compl tc;
var SIMTRACE_PDU stpdu_out, stpdu_in;
while (true) {
alt {
[] USB.receive(tr_UsbXfer_compl(g_ep_out, USB_TRANSFER_TYPE_BULK,
USB_TRANSFER_COMPLETED, g_dev_hdl, ?)) {
/* do nothing; normal completion of OUT transfer */
}
[] USB.receive(tr_UsbXfer_compl(g_ep_in, USB_TRANSFER_TYPE_BULK,
USB_TRANSFER_COMPLETED, g_dev_hdl, ?)) -> value tc {
/* Submit another IN transfer */
f_usb_submit_xfer(g_ep_in);
stpdu_in := dec_SIMTRACE_PDU(tc.data);
INOUT.send(stpdu_in);
}
[] USB.receive(tr_UsbXfer_compl(g_ep_irq, USB_TRANSFER_TYPE_INTERRUPT,
USB_TRANSFER_COMPLETED, g_dev_hdl, ?))-> value tc {
/* Submit another IRQ transfer */
f_usb_submit_xfer(g_ep_irq, ttype := USB_TRANSFER_TYPE_INTERRUPT);
stpdu_in := dec_SIMTRACE_PDU(tc.data);
IRQ.send(stpdu_in);
}
[] USB.receive(tr_UsbXfer_compl(g_ep_irq, USB_TRANSFER_TYPE_INTERRUPT,
USB_TRANSFER_TIMED_OUT, g_dev_hdl, ?)) -> value tc {
/* Submit another IRQ transfer */
f_usb_submit_xfer(g_ep_irq, ttype := USB_TRANSFER_TYPE_INTERRUPT);
}
[] USB.receive(tr_UsbXfer_compl(?, ?, USB_TRANSFER_STALL, g_dev_hdl, ?)) -> value tc {
setverdict(fail, "Unexpected USB_TRANSFER_STALL on EP ", int2hex(tc.endpoint, 2));
//mtc.stop;
/* Submit another IN transfer */
f_usb_submit_xfer(tc.endpoint);
}
[] USB.receive(tr_UsbXfer_compl(?, ?, USB_TRANSFER_ERROR, g_dev_hdl, ?)) -> value tc {
setverdict(fail, "Unexpected USB_TRANSFER_ERROR on EP ", int2hex(tc.endpoint, 2));
mtc.stop;
}
[] USB.receive(tr_UsbXfer_compl(?, ?, USB_TRANSFER_TIMED_OUT, g_dev_hdl, ?)) -> value tc {
setverdict(fail, "Unexpected USB_TRANSFER_TIMED_OUT on EP ", int2hex(tc.endpoint, 2));
mtc.stop;
}
[] USB.receive(tr_UsbXfer_compl(?, ?, USB_TRANSFER_OVERFLOW, g_dev_hdl, ?)) -> value tc {
setverdict(fail, "Unexpected USB_TRANSFER_OVERFLOW on EP ", int2hex(tc.endpoint, 2));
mtc.stop;
}
[] USB.receive(tr_UsbXfer_compl(?, ?, ?, g_dev_hdl, ?)) -> value tc {
setverdict(fail, "Unexpected USB Endpoint ", int2hex(tc.endpoint, 2));
mtc.stop;
}
[] USB.receive(tr_UsbXfer_compl(?, ?, ?, ?, ?)) -> value tc {
setverdict(fail, "Unexpected USB Device ", tc.device_hdl);
mtc.stop;
}
[] USB.receive {
setverdict(fail, "Unexpected Message from USB");
mtc.stop;
}
[] INOUT.receive(SIMTRACE_PDU:?) -> value stpdu_out {
f_usb_submit_xfer(g_ep_out, enc_SIMTRACE_PDU(stpdu_out), tout_ms := 3000);
}
}
}
}
}