Release 4.15 drivers/staging/ccree/cc_lli_defs.h

/*
 * Copyright (C) 2012-2017 ARM Limited or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _CC_LLI_DEFS_H_

#define _CC_LLI_DEFS_H_

#include <linux/types.h>

/* Max DLLI size
 *  AKA DX_DSCRPTR_QUEUE_WORD1_DIN_SIZE_BIT_SIZE
 */

#define DLLI_SIZE_BIT_SIZE	0x18


#define CC_MAX_MLLI_ENTRY_SIZE 0xFFFF


#define LLI_MAX_NUM_OF_DATA_ENTRIES 128

#define LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES 4

#define MLLI_TABLE_MIN_ALIGNMENT 4 
/* 32 bit alignment */

#define MAX_NUM_OF_BUFFERS_IN_MLLI 4

#define MAX_NUM_OF_TOTAL_MLLI_ENTRIES \
		(2 * LLI_MAX_NUM_OF_DATA_ENTRIES + \
                 LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES)

/* Size of entry */

#define LLI_ENTRY_WORD_SIZE 2

#define LLI_ENTRY_BYTE_SIZE (LLI_ENTRY_WORD_SIZE * sizeof(u32))

/* Word0[31:0] = ADDR[31:0] */

#define LLI_WORD0_OFFSET 0

#define LLI_LADDR_BIT_OFFSET 0

#define LLI_LADDR_BIT_SIZE 32
/* Word1[31:16] = ADDR[47:32]; Word1[15:0] = SIZE */

#define LLI_WORD1_OFFSET 1

#define LLI_SIZE_BIT_OFFSET 0

#define LLI_SIZE_BIT_SIZE 16

#define LLI_HADDR_BIT_OFFSET 16

#define LLI_HADDR_BIT_SIZE 16


#define LLI_SIZE_MASK GENMASK((LLI_SIZE_BIT_SIZE - 1), LLI_SIZE_BIT_OFFSET)

#define LLI_HADDR_MASK GENMASK( \
                               (LLI_HADDR_BIT_OFFSET + LLI_HADDR_BIT_SIZE - 1),\
                                LLI_HADDR_BIT_OFFSET)



static inline void cc_lli_set_addr(u32 *lli_p, dma_addr_t addr)
{
	lli_p[LLI_WORD0_OFFSET] = (addr & U32_MAX);
#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
	lli_p[LLI_WORD1_OFFSET] &= ~LLI_HADDR_MASK;
	lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_HADDR_MASK, (addr >> 32));
#endif /* CONFIG_ARCH_DMA_ADDR_T_64BIT */
}

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static inline void cc_lli_set_size(u32 *lli_p, u16 size)
{
	lli_p[LLI_WORD1_OFFSET] &= ~LLI_SIZE_MASK;
	lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_SIZE_MASK, size);
}

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#endif /*_CC_LLI_DEFS_H_*/
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Directory: drivers/staging/ccree

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