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 20struct iommu_arena { 21 unsigned long *map; 22 unsigned int hint; 23 unsigned int limit; 24}; 25 26struct 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 46struct strbuf { 47 int strbuf_enabled; 48 unsigned long strbuf_control; 49 unsigned long strbuf_pflush; 50 unsigned long strbuf_fsync; 51 unsigned long strbuf_err_stat; 52 unsigned long strbuf_tag_diag; 53 unsigned long strbuf_line_diag; 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 61extern 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) */ 66