crypto/ccree/cc_lli_defs.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
0003
0004 #ifndef _CC_LLI_DEFS_H_
0005 #define _CC_LLI_DEFS_H_
0006
0007 #include <linux/types.h>
0008
0009 /* Max DLLI size
0010  *  AKA CC_DSCRPTR_QUEUE_WORD1_DIN_SIZE_BIT_SIZE
0011  */
0012 #define DLLI_SIZE_BIT_SIZE  0x18
0013
0014 #define CC_MAX_MLLI_ENTRY_SIZE 0xFFFF
0015
0016 #define LLI_MAX_NUM_OF_DATA_ENTRIES 128
0017 #define LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES 8
0018 #define MLLI_TABLE_MIN_ALIGNMENT 4 /* 32 bit alignment */
0019 #define MAX_NUM_OF_BUFFERS_IN_MLLI 4
0020 #define MAX_NUM_OF_TOTAL_MLLI_ENTRIES \
0021         (2 * LLI_MAX_NUM_OF_DATA_ENTRIES + \
0022          LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES)
0023
0024 /* Size of entry */
0025 #define LLI_ENTRY_WORD_SIZE 2
0026 #define LLI_ENTRY_BYTE_SIZE (LLI_ENTRY_WORD_SIZE * sizeof(u32))
0027
0028 /* Word0[31:0] = ADDR[31:0] */
0029 #define LLI_WORD0_OFFSET 0
0030 #define LLI_LADDR_BIT_OFFSET 0
0031 #define LLI_LADDR_BIT_SIZE 32
0032 /* Word1[31:16] = ADDR[47:32]; Word1[15:0] = SIZE */
0033 #define LLI_WORD1_OFFSET 1
0034 #define LLI_SIZE_BIT_OFFSET 0
0035 #define LLI_SIZE_BIT_SIZE 16
0036 #define LLI_HADDR_BIT_OFFSET 16
0037 #define LLI_HADDR_BIT_SIZE 16
0038
0039 #define LLI_SIZE_MASK GENMASK((LLI_SIZE_BIT_SIZE - 1), LLI_SIZE_BIT_OFFSET)
0040 #define LLI_HADDR_MASK GENMASK( \
0041                    (LLI_HADDR_BIT_OFFSET + LLI_HADDR_BIT_SIZE - 1),\
0042                 LLI_HADDR_BIT_OFFSET)
0043
0044 static inline void cc_lli_set_addr(u32 *lli_p, dma_addr_t addr)
0045 {
0046     lli_p[LLI_WORD0_OFFSET] = (addr & U32_MAX);
0047 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
0048     lli_p[LLI_WORD1_OFFSET] &= ~LLI_HADDR_MASK;
0049     lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_HADDR_MASK, (addr >> 32));
0050 #endif /* CONFIG_ARCH_DMA_ADDR_T_64BIT */
0051 }
0052
0053 static inline void cc_lli_set_size(u32 *lli_p, u16 size)
0054 {
0055     lli_p[LLI_WORD1_OFFSET] &= ~LLI_SIZE_MASK;
0056     lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_SIZE_MASK, size);
0057 }
0058
0059 #endif /*_CC_LLI_DEFS_H_*/