diff options
Diffstat (limited to 'drivers/crypto/caam/sg_sw_qm.h')
| -rw-r--r-- | drivers/crypto/caam/sg_sw_qm.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/crypto/caam/sg_sw_qm.h b/drivers/crypto/caam/sg_sw_qm.h new file mode 100644 index 0000000..3b3cabc --- /dev/null +++ b/drivers/crypto/caam/sg_sw_qm.h @@ -0,0 +1,126 @@ +/* + * Copyright 2013-2016 Freescale Semiconductor, Inc. + * Copyright 2016-2017 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 name of Freescale Semiconductor nor the + * names of its 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 Freescale Semiconductor ``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 Freescale Semiconductor 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_QM_H +#define __SG_SW_QM_H + +#include <linux/fsl_qman.h> +#include "regs.h" + +static inline void cpu_to_hw_sg(struct qm_sg_entry *qm_sg_ptr) +{ + dma_addr_t addr = qm_sg_ptr->opaque; + + qm_sg_ptr->opaque = cpu_to_caam64(addr); + qm_sg_ptr->sgt_efl = cpu_to_caam32(qm_sg_ptr->sgt_efl); +} + +static inline void __dma_to_qm_sg(struct qm_sg_entry *qm_sg_ptr, dma_addr_t dma, + u32 len, u16 offset) +{ + qm_sg_ptr->addr = dma; + qm_sg_ptr->length = len; + qm_sg_ptr->__reserved2 = 0; + qm_sg_ptr->bpid = 0; + qm_sg_ptr->__reserved3 = 0; + qm_sg_ptr->offset = offset & QM_SG_OFFSET_MASK; + + cpu_to_hw_sg(qm_sg_ptr); +} + +static inline void dma_to_qm_sg_one(struct qm_sg_entry *qm_sg_ptr, + dma_addr_t dma, u32 len, u16 offset) +{ + qm_sg_ptr->extension = 0; + qm_sg_ptr->final = 0; + __dma_to_qm_sg(qm_sg_ptr, dma, len, offset); +} + +static inline void dma_to_qm_sg_one_last(struct qm_sg_entry *qm_sg_ptr, + dma_addr_t dma, u32 len, u16 offset) +{ + qm_sg_ptr->extension = 0; + qm_sg_ptr->final = 1; + __dma_to_qm_sg(qm_sg_ptr, dma, len, offset); +} + +static inline void dma_to_qm_sg_one_ext(struct qm_sg_entry *qm_sg_ptr, + dma_addr_t dma, u32 len, u16 offset) +{ + qm_sg_ptr->extension = 1; + qm_sg_ptr->final = 0; + __dma_to_qm_sg(qm_sg_ptr, dma, len, offset); +} + +static inline void dma_to_qm_sg_one_last_ext(struct qm_sg_entry *qm_sg_ptr, + dma_addr_t dma, u32 len, + u16 offset) +{ + qm_sg_ptr->extension = 1; + qm_sg_ptr->final = 1; + __dma_to_qm_sg(qm_sg_ptr, dma, len, offset); +} + +/* + * convert scatterlist to h/w link table format + * but does not have final bit; instead, returns last entry + */ +static inline struct qm_sg_entry * +sg_to_qm_sg(struct scatterlist *sg, int sg_count, + struct qm_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 qm_sg_entry *qm_sg_ptr, u16 offset) +{ + qm_sg_ptr = sg_to_qm_sg(sg, sg_count, qm_sg_ptr, offset); + + qm_sg_ptr->sgt_efl = caam32_to_cpu(qm_sg_ptr->sgt_efl); + qm_sg_ptr->final = 1; + qm_sg_ptr->sgt_efl = cpu_to_caam32(qm_sg_ptr->sgt_efl); +} + +#endif /* __SG_SW_QM_H */ |