Commit | Line | Data |
---|---|---|
4c1ec1f9 YK |
1 | /* |
2 | * CAAM/SEC 4.x functions for using scatterlists in caam driver | |
3 | * | |
4 | * Copyright 2008-2011 Freescale Semiconductor, Inc. | |
5 | * | |
6 | */ | |
7 | ||
261ea058 HG |
8 | #include "regs.h" |
9 | ||
e25ff92e HG |
10 | struct sec4_sg_entry { |
11 | u64 ptr; | |
12 | u32 len; | |
13 | u32 bpid_offset; | |
14 | }; | |
4c1ec1f9 YK |
15 | |
16 | /* | |
17 | * convert single dma address to h/w link table format | |
18 | */ | |
a299c837 | 19 | static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, |
bd52f1c2 | 20 | dma_addr_t dma, u32 len, u16 offset) |
4c1ec1f9 | 21 | { |
f97581cf | 22 | sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma); |
261ea058 HG |
23 | sec4_sg_ptr->len = cpu_to_caam32(len); |
24 | sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset & SEC4_SG_OFFSET_MASK); | |
4c1ec1f9 | 25 | #ifdef DEBUG |
a299c837 YK |
26 | print_hex_dump(KERN_ERR, "sec4_sg_ptr@: ", |
27 | DUMP_PREFIX_ADDRESS, 16, 4, sec4_sg_ptr, | |
28 | sizeof(struct sec4_sg_entry), 1); | |
4c1ec1f9 YK |
29 | #endif |
30 | } | |
31 | ||
32 | /* | |
33 | * convert scatterlist to h/w link table format | |
34 | * but does not have final bit; instead, returns last entry | |
35 | */ | |
a299c837 YK |
36 | static inline struct sec4_sg_entry * |
37 | sg_to_sec4_sg(struct scatterlist *sg, int sg_count, | |
bd52f1c2 | 38 | struct sec4_sg_entry *sec4_sg_ptr, u16 offset) |
4c1ec1f9 YK |
39 | { |
40 | while (sg_count) { | |
a299c837 | 41 | dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), |
4c1ec1f9 | 42 | sg_dma_len(sg), offset); |
a299c837 | 43 | sec4_sg_ptr++; |
5be4d4c9 | 44 | sg = sg_next(sg); |
4c1ec1f9 YK |
45 | sg_count--; |
46 | } | |
a299c837 | 47 | return sec4_sg_ptr - 1; |
4c1ec1f9 YK |
48 | } |
49 | ||
50 | /* | |
51 | * convert scatterlist to h/w link table format | |
52 | * scatterlist must have been previously dma mapped | |
53 | */ | |
a299c837 YK |
54 | static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int sg_count, |
55 | struct sec4_sg_entry *sec4_sg_ptr, | |
bd52f1c2 | 56 | u16 offset) |
4c1ec1f9 | 57 | { |
a299c837 | 58 | sec4_sg_ptr = sg_to_sec4_sg(sg, sg_count, sec4_sg_ptr, offset); |
261ea058 | 59 | sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN); |
4c1ec1f9 | 60 | } |