1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
4 #ifndef _CC_LLI_DEFS_H_
5 #define _CC_LLI_DEFS_H_
7 #include <linux/types.h>
10 * AKA CC_DSCRPTR_QUEUE_WORD1_DIN_SIZE_BIT_SIZE
12 #define DLLI_SIZE_BIT_SIZE 0x18
14 #define CC_MAX_MLLI_ENTRY_SIZE 0xFFFF
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)
25 #define LLI_ENTRY_WORD_SIZE 2
26 #define LLI_ENTRY_BYTE_SIZE (LLI_ENTRY_WORD_SIZE * sizeof(u32))
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
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),\
44 static inline void cc_lli_set_addr(u32 *lli_p, dma_addr_t addr)
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 */
53 static inline void cc_lli_set_size(u32 *lli_p, u16 size)
55 lli_p[LLI_WORD1_OFFSET] &= ~LLI_SIZE_MASK;
56 lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_SIZE_MASK, size);
59 #endif /*_CC_LLI_DEFS_H_*/