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/*
Copyright (c) 2014-2015 Intel Corporation. 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 Intel Corporation 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
HOLDER 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.
*/
// The parts of the offload library used only on the target
#ifndef OFFLOAD_TARGET_H_INCLUDED
#define OFFLOAD_TARGET_H_INCLUDED
#include "offload_common.h"
#include "coi/coi_server.h"
// The offload descriptor.
class OffloadDescriptor
{
public:
~OffloadDescriptor() {
if (m_vars != 0) {
free(m_vars);
}
}
// Entry point for COI. Synchronously execute offloaded region given
// the provided buffers, misc and return data.
static void offload(
uint32_t buffer_count,
void** buffers,
void* misc_data,
uint16_t misc_data_len,
void* return_data,
uint16_t return_data_len
);
// scatters input data from in buffer to target variables
void scatter_copyin_data();
// gathers output data to the buffer
void gather_copyout_data();
// merges local variable descriptors with the descriptors received from
// host
void merge_var_descs(VarDesc *vars, VarDesc2 *vars2, int vars_total);
int get_offload_number() const {
return m_offload_number;
}
void set_offload_number(int number) {
m_offload_number = number;
}
private:
// Constructor
OffloadDescriptor() : m_vars(0)
{}
private:
typedef std::list<void*> BufferList;
// The Marshaller for the inputs of the offloaded region.
Marshaller m_in;
// The Marshaller for the outputs of the offloaded region.
Marshaller m_out;
// List of buffers that are passed to dispatch call
BufferList m_buffers;
// Variable descriptors received from host
VarDesc* m_vars;
int m_vars_total;
int m_offload_number;
};
// one time target initialization in main
DLL_LOCAL extern void __offload_target_init(void);
// logical device index
DLL_LOCAL extern int mic_index;
// total number of available logical devices
DLL_LOCAL extern int mic_engines_total;
// device frequency (from COI)
DLL_LOCAL extern uint64_t mic_frequency;
struct RefInfo {
RefInfo(bool is_add, long amount):is_added(is_add),count(amount)
{}
bool is_added;
long count;
};
#endif // OFFLOAD_TARGET_H_INCLUDED
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