| /* iommu.h: Definitions for the sun5 IOMMU. |
| * |
| * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net) |
| */ |
| #ifndef _SPARC64_IOMMU_H |
| #define _SPARC64_IOMMU_H |
| |
| /* The format of an iopte in the page tables. */ |
| #define IOPTE_VALID 0x8000000000000000UL |
| #define IOPTE_64K 0x2000000000000000UL |
| #define IOPTE_STBUF 0x1000000000000000UL |
| #define IOPTE_INTRA 0x0800000000000000UL |
| #define IOPTE_CONTEXT 0x07ff800000000000UL |
| #define IOPTE_PAGE 0x00007fffffffe000UL |
| #define IOPTE_CACHE 0x0000000000000010UL |
| #define IOPTE_WRITE 0x0000000000000002UL |
| |
| #define IOMMU_NUM_CTXS 4096 |
| |
| struct iommu_arena { |
| unsigned long *map; |
| unsigned int hint; |
| unsigned int limit; |
| }; |
| |
| struct iommu { |
| spinlock_t lock; |
| struct iommu_arena arena; |
| iopte_t *page_table; |
| u32 page_table_map_base; |
| unsigned long iommu_control; |
| unsigned long iommu_tsbbase; |
| unsigned long iommu_flush; |
| unsigned long iommu_flushinv; |
| unsigned long iommu_tags; |
| unsigned long iommu_ctxflush; |
| unsigned long write_complete_reg; |
| unsigned long dummy_page; |
| unsigned long dummy_page_pa; |
| unsigned long ctx_lowest_free; |
| DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS); |
| u32 dma_addr_mask; |
| }; |
| |
| struct strbuf { |
| int strbuf_enabled; |
| unsigned long strbuf_control; |
| unsigned long strbuf_pflush; |
| unsigned long strbuf_fsync; |
| unsigned long strbuf_ctxflush; |
| unsigned long strbuf_ctxmatch_base; |
| unsigned long strbuf_flushflag_pa; |
| volatile unsigned long *strbuf_flushflag; |
| volatile unsigned long __flushflag_buf[(64+(64-1)) / sizeof(long)]; |
| }; |
| |
| extern int iommu_table_init(struct iommu *iommu, int tsbsize, |
| u32 dma_offset, u32 dma_addr_mask); |
| |
| #endif /* !(_SPARC64_IOMMU_H) */ |