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- /* 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) */
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