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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; void (*flush_all)(struct iommu *); 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, int numa_node); #endif /* !(_SPARC64_IOMMU_H) */ |