x86/mm/pat: Don't report PAT on CPUs that don't support it
[linux/fpc-iii.git] / drivers / crypto / caam / sg_sw_sec4.h
blobc6adad09c97299fe23614deee5729ba28e46b0e4
1 /*
2 * CAAM/SEC 4.x functions for using scatterlists in caam driver
4 * Copyright 2008-2011 Freescale Semiconductor, Inc.
6 */
8 #include "regs.h"
10 struct sec4_sg_entry {
11 u64 ptr;
12 u32 len;
13 u32 bpid_offset;
17 * convert single dma address to h/w link table format
19 static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr,
20 dma_addr_t dma, u32 len, u16 offset)
22 sec4_sg_ptr->ptr = cpu_to_caam_dma64(dma);
23 sec4_sg_ptr->len = cpu_to_caam32(len);
24 sec4_sg_ptr->bpid_offset = cpu_to_caam32(offset & SEC4_SG_OFFSET_MASK);
25 #ifdef DEBUG
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);
29 #endif
33 * convert scatterlist to h/w link table format
34 * but does not have final bit; instead, returns last entry
36 static inline struct sec4_sg_entry *
37 sg_to_sec4_sg(struct scatterlist *sg, int sg_count,
38 struct sec4_sg_entry *sec4_sg_ptr, u16 offset)
40 while (sg_count) {
41 dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg),
42 sg_dma_len(sg), offset);
43 sec4_sg_ptr++;
44 sg = sg_next(sg);
45 sg_count--;
47 return sec4_sg_ptr - 1;
51 * convert scatterlist to h/w link table format
52 * scatterlist must have been previously dma mapped
54 static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int sg_count,
55 struct sec4_sg_entry *sec4_sg_ptr,
56 u16 offset)
58 sec4_sg_ptr = sg_to_sec4_sg(sg, sg_count, sec4_sg_ptr, offset);
59 sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN);
62 static inline struct sec4_sg_entry *sg_to_sec4_sg_len(
63 struct scatterlist *sg, unsigned int total,
64 struct sec4_sg_entry *sec4_sg_ptr)
66 do {
67 unsigned int len = min(sg_dma_len(sg), total);
69 dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), len, 0);
70 sec4_sg_ptr++;
71 sg = sg_next(sg);
72 total -= len;
73 } while (total);
74 return sec4_sg_ptr - 1;