Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6
[linux-2.6] / include / asm-sparc64 / iommu.h
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;
51         unsigned long           strbuf_ctxflush;
52         unsigned long           strbuf_ctxmatch_base;
53         unsigned long           strbuf_flushflag_pa;
54         volatile unsigned long *strbuf_flushflag;
55         volatile unsigned long  __flushflag_buf[(64+(64-1)) / sizeof(long)];
56 };
57
58 extern int iommu_table_init(struct iommu *iommu, int tsbsize,
59                             u32 dma_offset, u32 dma_addr_mask,
60                             int numa_node);
61
62 #endif /* !(_SPARC64_IOMMU_H) */