drivers/staging/ccree/cc_lli_defs.h

   1 /*
   2  * Copyright (C) 2012-2017 ARM Limited or its affiliates.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  15  */
  16
  17 #ifndef _CC_LLI_DEFS_H_
  18 #define _CC_LLI_DEFS_H_
  19
  20 #include <linux/types.h>
  21
  22 /* Max DLLI size
  23  *  AKA DX_DSCRPTR_QUEUE_WORD1_DIN_SIZE_BIT_SIZE
  24  */
  25 #define DLLI_SIZE_BIT_SIZE      0x18
  26
  27 #define CC_MAX_MLLI_ENTRY_SIZE 0xFFFF
  28
  29 #define LLI_MAX_NUM_OF_DATA_ENTRIES 128
  30 #define LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES 4
  31 #define MLLI_TABLE_MIN_ALIGNMENT 4 /* 32 bit alignment */
  32 #define MAX_NUM_OF_BUFFERS_IN_MLLI 4
  33 #define MAX_NUM_OF_TOTAL_MLLI_ENTRIES \
  34                 (2 * LLI_MAX_NUM_OF_DATA_ENTRIES + \
  35                  LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES)
  36
  37 /* Size of entry */
  38 #define LLI_ENTRY_WORD_SIZE 2
  39 #define LLI_ENTRY_BYTE_SIZE (LLI_ENTRY_WORD_SIZE * sizeof(u32))
  40
  41 /* Word0[31:0] = ADDR[31:0] */
  42 #define LLI_WORD0_OFFSET 0
  43 #define LLI_LADDR_BIT_OFFSET 0
  44 #define LLI_LADDR_BIT_SIZE 32
  45 /* Word1[31:16] = ADDR[47:32]; Word1[15:0] = SIZE */
  46 #define LLI_WORD1_OFFSET 1
  47 #define LLI_SIZE_BIT_OFFSET 0
  48 #define LLI_SIZE_BIT_SIZE 16
  49 #define LLI_HADDR_BIT_OFFSET 16
  50 #define LLI_HADDR_BIT_SIZE 16
  51
  52 #define LLI_SIZE_MASK GENMASK((LLI_SIZE_BIT_SIZE - 1), LLI_SIZE_BIT_OFFSET)
  53 #define LLI_HADDR_MASK GENMASK( \
  54                                (LLI_HADDR_BIT_OFFSET + LLI_HADDR_BIT_SIZE - 1),\
  55                                 LLI_HADDR_BIT_OFFSET)
  56
  57 static inline void cc_lli_set_addr(u32 *lli_p, dma_addr_t addr)
  58 {
  59         lli_p[LLI_WORD0_OFFSET] = (addr & U32_MAX);
  60 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
  61         lli_p[LLI_WORD1_OFFSET] &= ~LLI_HADDR_MASK;
  62         lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_HADDR_MASK, (addr >> 16));
  63 #endif /* CONFIG_ARCH_DMA_ADDR_T_64BIT */
  64 }
  65
  66 static inline void cc_lli_set_size(u32 *lli_p, u16 size)
  67 {
  68         lli_p[LLI_WORD1_OFFSET] &= ~LLI_SIZE_MASK;
  69         lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_SIZE_MASK, size);
  70 }
  71
  72 #endif /*_CC_LLI_DEFS_H_*/