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_*/ |
60 | |