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 #include <linux/iommu-common.h> 20 21 struct iommu_arena { 22 unsigned long *map; 23 unsigned int hint; 24 unsigned int limit; 25 }; 26 27 struct iommu { 28 struct iommu_map_table tbl; 29 spinlock_t lock; 30 u32 dma_addr_mask; 31 iopte_t *page_table; 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 }; 44 45 struct strbuf { 46 int strbuf_enabled; 47 unsigned long strbuf_control; 48 unsigned long strbuf_pflush; 49 unsigned long strbuf_fsync; 50 unsigned long strbuf_err_stat; 51 unsigned long strbuf_tag_diag; 52 unsigned long strbuf_line_diag; 53 unsigned long strbuf_ctxflush; 54 unsigned long strbuf_ctxmatch_base; 55 unsigned long strbuf_flushflag_pa; 56 volatile unsigned long *strbuf_flushflag; 57 volatile unsigned long __flushflag_buf[(64+(64-1)) / sizeof(long)]; 58 }; 59 60 int iommu_table_init(struct iommu *iommu, int tsbsize, 61 u32 dma_offset, u32 dma_addr_mask, 62 int numa_node); 63 64 #endif /* !(_SPARC64_IOMMU_H) */ 65