drivers/crypto/ccree/cc_lli_defs.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
   3
   4 #ifndef _CC_LLI_DEFS_H_
   5 #define _CC_LLI_DEFS_H_
   6
   7 #include <linux/types.h>
   8
   9 /* Max DLLI size
  10  *  AKA CC_DSCRPTR_QUEUE_WORD1_DIN_SIZE_BIT_SIZE
  11  */
  12 #define DLLI_SIZE_BIT_SIZE      0x18
  13
  14 #define CC_MAX_MLLI_ENTRY_SIZE 0xFFFF
  15
  16 #define LLI_MAX_NUM_OF_DATA_ENTRIES 128
  17 #define LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES 8
  18 #define MLLI_TABLE_MIN_ALIGNMENT 4 /* 32 bit alignment */
  19 #define MAX_NUM_OF_BUFFERS_IN_MLLI 4
  20 #define MAX_NUM_OF_TOTAL_MLLI_ENTRIES \
  21                 (2 * LLI_MAX_NUM_OF_DATA_ENTRIES + \
  22                  LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES)
  23
  24 /* Size of entry */
  25 #define LLI_ENTRY_WORD_SIZE 2
  26 #define LLI_ENTRY_BYTE_SIZE (LLI_ENTRY_WORD_SIZE * sizeof(u32))
  27
  28 /* Word0[31:0] = ADDR[31:0] */
  29 #define LLI_WORD0_OFFSET 0
  30 #define LLI_LADDR_BIT_OFFSET 0
  31 #define LLI_LADDR_BIT_SIZE 32
  32 /* Word1[31:16] = ADDR[47:32]; Word1[15:0] = SIZE */
  33 #define LLI_WORD1_OFFSET 1
  34 #define LLI_SIZE_BIT_OFFSET 0
  35 #define LLI_SIZE_BIT_SIZE 16
  36 #define LLI_HADDR_BIT_OFFSET 16
  37 #define LLI_HADDR_BIT_SIZE 16
  38
  39 #define LLI_SIZE_MASK GENMASK((LLI_SIZE_BIT_SIZE - 1), LLI_SIZE_BIT_OFFSET)
  40 #define LLI_HADDR_MASK GENMASK( \
  41                                (LLI_HADDR_BIT_OFFSET + LLI_HADDR_BIT_SIZE - 1),\
  42                                 LLI_HADDR_BIT_OFFSET)
  43
  44 static inline void cc_lli_set_addr(u32 *lli_p, dma_addr_t addr)
  45 {
  46         lli_p[LLI_WORD0_OFFSET] = (addr & U32_MAX);
  47 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
  48         lli_p[LLI_WORD1_OFFSET] &= ~LLI_HADDR_MASK;
  49         lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_HADDR_MASK, (addr >> 32));
  50 #endif /* CONFIG_ARCH_DMA_ADDR_T_64BIT */
  51 }
  52
  53 static inline void cc_lli_set_size(u32 *lli_p, u16 size)
  54 {
  55         lli_p[LLI_WORD1_OFFSET] &= ~LLI_SIZE_MASK;
  56         lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_SIZE_MASK, size);
  57 }
  58
  59 #endif /*_CC_LLI_DEFS_H_*/