git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 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; | |
| 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) */ |