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/******************************************************************************
* Copyright (c) 2012-2014, Texas Instruments Incorporated - http://www.ti.com/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Texas Instruments Incorporated nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#include <list>
#include <iostream>
#include "CL/cl.h"
#include "CL/cl_ext.h"
#include "platform.h"
#include "propertylist.h"
#include "object.h"
#include "cpu/device.h"
#ifndef SHAMROCK_BUILD
#include "dsp/device.h"
#include "dsp/driver.h"
#endif
/*-----------------------------------------------------------------------------
* For the lock file
*----------------------------------------------------------------------------*/
#include <sys/file.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
using namespace Coal;
/******************************************************************************
* begin_file_lock_crit_section
******************************************************************************/
static int begin_file_lock_crit_section(char* fname)
{
/*---------------------------------------------------------------------
* Create a lock, so only 1 OpenCL program can progress at a time.
* I'm not sure about the appropriateness of putting this in the ctor.
* We may look at delayed ctor of platform with this in it.
*--------------------------------------------------------------------*/
int lock_fd = open(fname, O_CREAT,
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
std::string str_fname(fname);
if (lock_fd < 0)
{
std::cout << "Can not open lock file " << str_fname << ", Aborting !" << std::endl;
exit(-1);
}
int res = flock(lock_fd, LOCK_EX|LOCK_NB);
if (res == -1)
{
if (errno == EWOULDBLOCK)
{
std::cout << "Waiting on lock " << str_fname << " ..." << std::endl;
res = flock(lock_fd, LOCK_EX);
if (res == -1)
{
std::cout << "Error Locking file " << str_fname << ", Aborting !" << std::endl;
exit(-1);
}
else std::cout << "Acquired lock " << str_fname << ", Proceeding!" << std::endl;
}
else
{
std::cout << "Error Locking file " << str_fname << ", Aborting !" << std::endl;
exit(-1);
}
}
return lock_fd;
}
namespace Coal
{
Platform::Platform() : dispatch(&dispatch_table)
{
char filename[] = "/var/lock/opencl";
p_lock_fd = begin_file_lock_crit_section(filename);
p_devices.push_back((_cl_device_id*)new Coal::CPUDevice(NULL,0));
// Driver class only exists for the DSPDevice, so need this guard:
#ifndef SHAMROCK_BUILD
for (int i = 0; i < Driver::instance()->num_dsps(); i++)
p_devices.push_back((_cl_device_id*)new Coal::DSPDevice(i));
#endif
}
Platform::~Platform()
{
flock(p_lock_fd, LOCK_UN);
close(p_lock_fd);
for (int i = 0; i < p_devices.size(); i++)
delete p_devices[i];
}
cl_uint Platform::getDevices(cl_device_type device_type,
cl_uint num_entries, cl_device_id * devices)
{
cl_uint device_number = 0;
if (device_type == CL_DEVICE_TYPE_DEFAULT)
#ifdef SHAMROCK_BUILD
device_type = CL_DEVICE_TYPE_CPU;
#else
device_type = CL_DEVICE_TYPE_ACCELERATOR;
#endif
for (int d = 0; d < p_devices.size(); d++)
{
cl_device_type type;
p_devices[d]->info(CL_DEVICE_TYPE, sizeof(cl_device_type), &type,0);
if (type & device_type)
{
if (devices && device_number < num_entries)
devices[device_number++] = p_devices[d];
else device_number++;
}
}
return device_number;
}
cl_int Platform::info(cl_mem_info param_name,
size_t param_value_size,
void *param_value,
size_t *param_value_size_ret) const
{
void *value = 0;
size_t value_length = 0;
switch (param_name)
{
case CL_PLATFORM_PROFILE:
STRING_ASSIGN("FULL_PROFILE");
break;
case CL_PLATFORM_VERSION:
#ifdef SHAMROCK_BUILD
STRING_ASSIGN("OpenCL 1.2 Shamrock ");
#else
STRING_ASSIGN("OpenCL 1.2 TI ");
#endif
break;
case CL_PLATFORM_NAME:
#ifdef SHAMROCK_BUILD
STRING_ASSIGN("Shamrock OpenCL for Arm");
#else
#if defined(__arm__)
STRING_ASSIGN("TI OpenCL for Arm + Dsp");
#else
STRING_ASSIGN("TI OpenCL for Advantech DSPC868x");
#endif
#endif
break;
case CL_PLATFORM_VENDOR:
#ifdef SHAMROCK_BUILD
STRING_ASSIGN("Open Source Software");
#else
STRING_ASSIGN("Texas Instruments, Inc.");
#endif
break;
case CL_PLATFORM_EXTENSIONS:
// TODO add cl_khr_icd when it works
#ifdef SHAMROCK_BUILD
STRING_ASSIGN("cl_khr_byte_addressable_store cl_khr_fp64");
#else
STRING_ASSIGN("cl_khr_byte_addressable_store cl_khr_fp64 cl_ti_msmc_buffers");
#endif
break;
case CL_PLATFORM_ICD_SUFFIX_KHR:
#ifndef SHAMROCK_BUILD
STRING_ASSIGN("TI");
#endif
break;
default:
return CL_INVALID_VALUE;
}
if (param_value && param_value_size < value_length)
return CL_INVALID_VALUE;
if (param_value_size_ret)
*param_value_size_ret = value_length;
if (param_value)
std::memcpy(param_value, value, value_length);
return CL_SUCCESS;
}
};
_cl_platform_id the_platform;
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