/* ************************************************************************
 * Copyright 2013 Advanced Micro Devices, Inc.
 *
 * 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.
 * ************************************************************************/


#include <string.h>
#include <clBLAS.h>
#include <devinfo.h>

#include "clblas-internal.h"
#include "solution_seq.h"

static clblasStatus
doSpmv(
    CLBlasKargs *kargs,
    clblasOrder order,
    clblasUplo uplo,
	size_t N,
    const cl_mem AP,
    size_t offa,
    const cl_mem X,
    size_t offx,
    int incx,
    cl_mem Y,
    size_t offy,
    int incy,
    cl_uint numCommandQueues,
    cl_command_queue *commandQueues,
    cl_uint numEventsInWaitList,
    const cl_event *eventWaitList,
    cl_event *events)
{
    cl_int err;
    ListHead seq1, seq2;
	cl_event first_event;
    clblasStatus retCode = clblasSuccess;

    if (!clblasInitialized) {
        return clblasNotInitialized;
    }

    /* Validate arguments */

    if ((retCode = checkMemObjects(AP, X, Y, true, A_MAT_ERRSET, X_VEC_ERRSET, Y_VEC_ERRSET))) {
        return retCode;
    }
    if ((retCode = checkMatrixSizes(kargs->dtype, order, clblasNoTrans, N, N,
                                    AP, offa, 0, A_MAT_ERRSET))) {
        return retCode;
    }
    if ((retCode = checkVectorSizes(kargs->dtype, N, X, offx, incx, X_VEC_ERRSET))) {
        return retCode;
    }
    if ((retCode = checkVectorSizes(kargs->dtype, N, Y, offy, incy, Y_VEC_ERRSET))) {
        return retCode;
    }
	if ((commandQueues == NULL) || (numCommandQueues == 0))
    {
        return clblasInvalidValue;
    }
    if ((numEventsInWaitList !=0) && (eventWaitList == NULL))
    {
        return clblasInvalidEventWaitList;
    }

	numCommandQueues = 1;
    kargs->order = order;
    kargs->uplo = uplo;
    kargs->N = N;
    kargs->A = AP;
    kargs->offA = offa;
	kargs->offa = offa;
    kargs->lda.matrix = 0;      // Set lda as zero for packed matrices
    kargs->B = X;
    kargs->offBX = offx;
    kargs->ldb.Vector = incx;
    kargs->C = Y;
    kargs->offCY = offy;
    kargs->ldc.Vector = incy;

	kargs->transA = clblasNoTrans;
	kargs->diag = clblasNonUnit;

    kargs->pigFuncID = CLBLAS_SPMV;

	listInitHead(&seq1);
    err = makeSolutionSeq(CLBLAS_TRMV, kargs, numCommandQueues, commandQueues,
                            numEventsInWaitList, eventWaitList, &first_event, &seq1);
    if (err == CL_SUCCESS) {
        err = executeSolutionSeq(&seq1);
		if (err == CL_SUCCESS)
		{
			listInitHead(&seq2);
			kargs->transA = clblasTrans;
		    kargs->diag   = clblasUnit;

			err = makeSolutionSeq(CLBLAS_TRMV, kargs, numCommandQueues, commandQueues,
			                            1, &first_event, events, &seq2);
			if (err == CL_SUCCESS)
			{
				err = executeSolutionSeq(&seq2);
			}
			freeSolutionSeq(&seq2);
		}
    }

    freeSolutionSeq(&seq1);
    return (clblasStatus)err;
}

clblasStatus
clblasSspmv(
    clblasOrder order,
    clblasUplo uplo,
    size_t N,
    cl_float alpha,
    const cl_mem AP,
	size_t offa,
    const cl_mem X,
    size_t offx,
    int incx,
    cl_float beta,
    cl_mem Y,
    size_t offy,
    int incy,
    cl_uint numCommandQueues,
    cl_command_queue *commandQueues,
    cl_uint numEventsInWaitList,
    const cl_event *eventWaitList,
    cl_event *events)
{
    CLBlasKargs kargs;

    memset(&kargs, 0, sizeof(kargs));
    kargs.dtype = TYPE_FLOAT;
    kargs.alpha.argFloat = alpha;
    kargs.beta.argFloat = beta;

    return doSpmv(&kargs, order, uplo, N, AP, offa, X, offx, incx,
                  Y, offy, incy, numCommandQueues, commandQueues,
                  numEventsInWaitList, eventWaitList, events);
}

clblasStatus
clblasDspmv(
    clblasOrder order,
    clblasUplo uplo,
    size_t N,
    cl_double alpha,
    const cl_mem AP,
    size_t offa,
    const cl_mem X,
    size_t offx,
    int incx,
    cl_double beta,
    cl_mem Y,
    size_t offy,
    int incy,
    cl_uint numCommandQueues,
    cl_command_queue *commandQueues,
    cl_uint numEventsInWaitList,
    const cl_event *eventWaitList,
    cl_event *events)
{
    CLBlasKargs kargs;

    memset(&kargs, 0, sizeof(kargs));
    kargs.dtype = TYPE_DOUBLE;
    kargs.alpha.argDouble = alpha;
    kargs.beta.argDouble = beta;

    return doSpmv(&kargs, order, uplo, N, AP, offa, X, offx, incx,
                  Y, offy, incy, numCommandQueues, commandQueues,
                  numEventsInWaitList, eventWaitList, events);
}
