1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (C) 2012-2018 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 4 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_*/ 60