| Sam Ravnborg | f5e706a | 2008-07-17 21:55:51 -0700 | [diff] [blame] | 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; |
| David S. Miller | d3ae4b5 | 2008-09-09 23:54:02 -0700 | [diff] [blame] | 51 | unsigned long strbuf_err_stat; |
| 52 | unsigned long strbuf_tag_diag; |
| 53 | unsigned long strbuf_line_diag; |
| Sam Ravnborg | f5e706a | 2008-07-17 21:55:51 -0700 | [diff] [blame] | 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) */ |