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/*
* Copyright 2015-2016 Freescale Semiconductor, Inc.
* Copyright 2017 NXP
*
* 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 names of the above-listed copyright holders nor the
* names of any contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* 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 HOLDERS 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.
*/
#ifndef _SG_SW_QM2_H_
#define _SG_SW_QM2_H_
#include <soc/fsl/dpaa2-fd.h>
static inline void dma_to_qm_sg_one(struct dpaa2_sg_entry *qm_sg_ptr,
dma_addr_t dma, u32 len, u16 offset)
{
dpaa2_sg_set_addr(qm_sg_ptr, dma);
dpaa2_sg_set_format(qm_sg_ptr, dpaa2_sg_single);
dpaa2_sg_set_final(qm_sg_ptr, false);
dpaa2_sg_set_len(qm_sg_ptr, len);
dpaa2_sg_set_bpid(qm_sg_ptr, 0);
dpaa2_sg_set_offset(qm_sg_ptr, offset);
}
/*
* convert scatterlist to h/w link table format
* but does not have final bit; instead, returns last entry
*/
static inline struct dpaa2_sg_entry *
sg_to_qm_sg(struct scatterlist *sg, int sg_count,
struct dpaa2_sg_entry *qm_sg_ptr, u16 offset)
{
while (sg_count && sg) {
dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg),
sg_dma_len(sg), offset);
qm_sg_ptr++;
sg = sg_next(sg);
sg_count--;
}
return qm_sg_ptr - 1;
}
/*
* convert scatterlist to h/w link table format
* scatterlist must have been previously dma mapped
*/
static inline void sg_to_qm_sg_last(struct scatterlist *sg, int sg_count,
struct dpaa2_sg_entry *qm_sg_ptr,
u16 offset)
{
qm_sg_ptr = sg_to_qm_sg(sg, sg_count, qm_sg_ptr, offset);
dpaa2_sg_set_final(qm_sg_ptr, true);
}
#endif /* _SG_SW_QM2_H_ */
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