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freerdp/winpr/libwinpr/comm/comm_sercx2_sys.c

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/**
* WinPR: Windows Portable Runtime
* Serial Communication API
*
* Copyright 2011 O.S. Systems Software Ltda.
* Copyright 2011 Eduardo Fiss Beloni <beloni@ossystems.com.br>
* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* Copyright 2014 Hewlett-Packard Development Company, L.P.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#if defined __linux__ && !defined ANDROID
#include <winpr/wlog.h>
#include "comm_serial_sys.h"
#include "comm_sercx_sys.h"
#include "comm_sercx2_sys.h"
/* http://msdn.microsoft.com/en-us/library/dn265347%28v=vs.85%29.aspx
*
* SerCx2 does not support special characters. SerCx2 always completes
* an IOCTL_SERIAL_SET_CHARS request with a STATUS_SUCCESS status
* code, but does not set any special characters or perform any other
* operation in response to this request. For an
* IOCTL_SERIAL_GET_CHARS request, SerCx2 sets all the character
* values in the SERIAL_CHARS structure to null, and completes the
* request with a STATUS_SUCCESS status code.
*/
static BOOL _set_serial_chars(WINPR_COMM* pComm, const SERIAL_CHARS* pSerialChars)
{
return TRUE;
}
static BOOL _get_serial_chars(WINPR_COMM* pComm, SERIAL_CHARS* pSerialChars)
{
ZeroMemory(pSerialChars, sizeof(SERIAL_CHARS));
return TRUE;
}
/* http://msdn.microsoft.com/en-us/library/windows/hardware/hh439605%28v=vs.85%29.aspx */
/* FIXME: only using the Serial.sys' events, complete the support of the remaining events */
static const ULONG _SERCX2_SYS_SUPPORTED_EV_MASK =
SERIAL_EV_RXCHAR | SERIAL_EV_RXFLAG | SERIAL_EV_TXEMPTY | SERIAL_EV_CTS | SERIAL_EV_DSR |
SERIAL_EV_RLSD | SERIAL_EV_BREAK | SERIAL_EV_ERR | SERIAL_EV_RING |
/* SERIAL_EV_PERR | */
SERIAL_EV_RX80FULL /*|
SERIAL_EV_EVENT1 |
SERIAL_EV_EVENT2*/
;
/* use Serial.sys for basis (not SerCx.sys) */
static BOOL _set_wait_mask(WINPR_COMM* pComm, const ULONG* pWaitMask)
{
ULONG possibleMask;
SERIAL_DRIVER* pSerialSys = SerialSys_s();
possibleMask = *pWaitMask & _SERCX2_SYS_SUPPORTED_EV_MASK;
if (possibleMask != *pWaitMask)
{
CommLog_Print(WLOG_WARN,
"Not all wait events supported (SerCx2.sys), requested events= 0x%08" PRIX32
", possible events= 0x%08" PRIX32 "",
*pWaitMask, possibleMask);
/* FIXME: shall we really set the possibleMask and return FALSE? */
pComm->WaitEventMask = possibleMask;
return FALSE;
}
/* NB: All events that are supported by SerCx.sys are supported by Serial.sys*/
return pSerialSys->set_wait_mask(pComm, pWaitMask);
}
static BOOL _purge(WINPR_COMM* pComm, const ULONG* pPurgeMask)
{
SERIAL_DRIVER* pSerialSys = SerialSys_s();
/* http://msdn.microsoft.com/en-us/library/windows/hardware/ff546655%28v=vs.85%29.aspx */
if ((*pPurgeMask & SERIAL_PURGE_RXCLEAR) && !(*pPurgeMask & SERIAL_PURGE_RXABORT))
{
CommLog_Print(WLOG_WARN,
"Expecting SERIAL_PURGE_RXABORT since SERIAL_PURGE_RXCLEAR is set");
SetLastError(ERROR_INVALID_DEVICE_OBJECT_PARAMETER);
return FALSE;
}
if ((*pPurgeMask & SERIAL_PURGE_TXCLEAR) && !(*pPurgeMask & SERIAL_PURGE_TXABORT))
{
CommLog_Print(WLOG_WARN,
"Expecting SERIAL_PURGE_TXABORT since SERIAL_PURGE_TXCLEAR is set");
SetLastError(ERROR_INVALID_DEVICE_OBJECT_PARAMETER);
return FALSE;
}
return pSerialSys->purge(pComm, pPurgeMask);
}
/* specific functions only */
static SERIAL_DRIVER _SerCx2Sys = {
.id = SerialDriverSerCx2Sys,
.name = _T("SerCx2.sys"),
.set_baud_rate = NULL,
.get_baud_rate = NULL,
.get_properties = NULL,
.set_serial_chars = _set_serial_chars,
.get_serial_chars = _get_serial_chars,
.set_line_control = NULL,
.get_line_control = NULL,
.set_handflow = NULL,
.get_handflow = NULL,
.set_timeouts = NULL,
.get_timeouts = NULL,
.set_dtr = NULL,
.clear_dtr = NULL,
.set_rts = NULL,
.clear_rts = NULL,
.get_modemstatus = NULL,
.set_wait_mask = _set_wait_mask,
.get_wait_mask = NULL,
.wait_on_mask = NULL,
.set_queue_size = NULL,
.purge = _purge,
.get_commstatus = NULL,
.set_break_on = NULL,
.set_break_off = NULL,
.set_xoff = NULL, /* not supported by SerCx2.sys */
.set_xon = NULL, /* not supported by SerCx2.sys */
.get_dtrrts = NULL,
.config_size = NULL, /* not supported by SerCx2.sys */
.immediate_char = NULL, /* not supported by SerCx2.sys */
.reset_device = NULL, /* not supported by SerCx2.sys */
};
SERIAL_DRIVER* SerCx2Sys_s()
{
/* _SerCx2Sys completed with inherited functions from SerialSys or SerCxSys */
SERIAL_DRIVER* pSerialSys = SerialSys_s();
SERIAL_DRIVER* pSerCxSys = SerCxSys_s();
_SerCx2Sys.set_baud_rate = pSerialSys->set_baud_rate;
_SerCx2Sys.get_baud_rate = pSerialSys->get_baud_rate;
_SerCx2Sys.get_properties = pSerialSys->get_properties;
_SerCx2Sys.set_line_control = pSerCxSys->set_line_control;
_SerCx2Sys.get_line_control = pSerCxSys->get_line_control;
/* Only SERIAL_CTS_HANDSHAKE, SERIAL_RTS_CONTROL and SERIAL_RTS_HANDSHAKE flags are really
* required by SerCx2.sys http://msdn.microsoft.com/en-us/library/jj680685%28v=vs.85%29.aspx
*/
_SerCx2Sys.set_handflow = pSerialSys->set_handflow;
_SerCx2Sys.get_handflow = pSerialSys->get_handflow;
_SerCx2Sys.set_timeouts = pSerialSys->set_timeouts;
_SerCx2Sys.get_timeouts = pSerialSys->get_timeouts;
_SerCx2Sys.set_dtr = pSerialSys->set_dtr;
_SerCx2Sys.clear_dtr = pSerialSys->clear_dtr;
_SerCx2Sys.set_rts = pSerialSys->set_rts;
_SerCx2Sys.clear_rts = pSerialSys->clear_rts;
_SerCx2Sys.get_modemstatus = pSerialSys->get_modemstatus;
_SerCx2Sys.set_wait_mask = pSerialSys->set_wait_mask;
_SerCx2Sys.get_wait_mask = pSerialSys->get_wait_mask;
_SerCx2Sys.wait_on_mask = pSerialSys->wait_on_mask;
_SerCx2Sys.set_queue_size = pSerialSys->set_queue_size;
_SerCx2Sys.get_commstatus = pSerialSys->get_commstatus;
_SerCx2Sys.set_break_on = pSerialSys->set_break_on;
_SerCx2Sys.set_break_off = pSerialSys->set_break_off;
_SerCx2Sys.get_dtrrts = pSerialSys->get_dtrrts;
return &_SerCx2Sys;
}
#endif /* __linux__ */
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