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f5e706ad SR |
1 | /* iommu.h: Definitions for the sun5 IOMMU. |
2 | * | |
3 | * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net) | |
4 | */ | |
5 | #ifndef _SPARC64_IOMMU_H | |
6 | #define _SPARC64_IOMMU_H | |
7 | ||
8 | /* The format of an iopte in the page tables. */ | |
9 | #define IOPTE_VALID 0x8000000000000000UL | |
10 | #define IOPTE_64K 0x2000000000000000UL | |
11 | #define IOPTE_STBUF 0x1000000000000000UL | |
12 | #define IOPTE_INTRA 0x0800000000000000UL | |
13 | #define IOPTE_CONTEXT 0x07ff800000000000UL | |
14 | #define IOPTE_PAGE 0x00007fffffffe000UL | |
15 | #define IOPTE_CACHE 0x0000000000000010UL | |
16 | #define IOPTE_WRITE 0x0000000000000002UL | |
17 | ||
18 | #define IOMMU_NUM_CTXS 4096 | |
19 | ||
20 | struct iommu_arena { | |
21 | unsigned long *map; | |
22 | unsigned int hint; | |
23 | unsigned int limit; | |
24 | }; | |
25 | ||
26 | struct iommu { | |
27 | spinlock_t lock; | |
28 | struct iommu_arena arena; | |
29 | void (*flush_all)(struct iommu *); | |
30 | iopte_t *page_table; | |
31 | u32 page_table_map_base; | |
32 | unsigned long iommu_control; | |
33 | unsigned long iommu_tsbbase; | |
34 | unsigned long iommu_flush; | |
35 | unsigned long iommu_flushinv; | |
36 | unsigned long iommu_tags; | |
37 | unsigned long iommu_ctxflush; | |
38 | unsigned long write_complete_reg; | |
39 | unsigned long dummy_page; | |
40 | unsigned long dummy_page_pa; | |
41 | unsigned long ctx_lowest_free; | |
42 | DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS); | |
43 | u32 dma_addr_mask; | |
44 | }; | |
45 | ||
46 | struct strbuf { | |
47 | int strbuf_enabled; | |
48 | unsigned long strbuf_control; | |
49 | unsigned long strbuf_pflush; | |
50 | unsigned long strbuf_fsync; | |
d3ae4b5b DM |
51 | unsigned long strbuf_err_stat; |
52 | unsigned long strbuf_tag_diag; | |
53 | unsigned long strbuf_line_diag; | |
f5e706ad SR |
54 | unsigned long strbuf_ctxflush; |
55 | unsigned long strbuf_ctxmatch_base; | |
56 | unsigned long strbuf_flushflag_pa; | |
57 | volatile unsigned long *strbuf_flushflag; | |
58 | volatile unsigned long __flushflag_buf[(64+(64-1)) / sizeof(long)]; | |
59 | }; | |
60 | ||
61 | extern int iommu_table_init(struct iommu *iommu, int tsbsize, | |
62 | u32 dma_offset, u32 dma_addr_mask, | |
63 | int numa_node); | |
64 | ||
65 | #endif /* !(_SPARC64_IOMMU_H) */ |