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 #define ATU_64_SPACE_SIZE 0x800000000 /* 32G */ 28 29 /* Data structures for SPARC ATU architecture */ 30 struct atu_iotsb { 31 void *table; /* IOTSB table base virtual addr*/ 32 u64 ra; /* IOTSB table real addr */ 33 u64 dvma_size; /* ranges[3].size or OS slected 32G size */ 34 u64 dvma_base; /* ranges[3].base */ 35 u64 table_size; /* IOTSB table size */ 36 u64 page_size; /* IO PAGE size for IOTSB */ 37 u32 iotsb_num; /* tsbnum is same as iotsb_handle */ 38 }; 39 40 struct atu_ranges { 41 u64 base; 42 u64 size; 43 }; 44 45 struct atu { 46 struct atu_ranges *ranges; 47 struct atu_iotsb *iotsb; 48 struct iommu_map_table tbl; 49 u64 base; 50 u64 size; 51 u64 dma_addr_mask; 52 }; 53 54 struct iommu { 55 struct iommu_map_table tbl; 56 struct atu *atu; 57 spinlock_t lock; 58 u32 dma_addr_mask; 59 iopte_t *page_table; 60 unsigned long iommu_control; 61 unsigned long iommu_tsbbase; 62 unsigned long iommu_flush; 63 unsigned long iommu_flushinv; 64 unsigned long iommu_tags; 65 unsigned long iommu_ctxflush; 66 unsigned long write_complete_reg; 67 unsigned long dummy_page; 68 unsigned long dummy_page_pa; 69 unsigned long ctx_lowest_free; 70 DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS); 71 }; 72 73 struct strbuf { 74 int strbuf_enabled; 75 unsigned long strbuf_control; 76 unsigned long strbuf_pflush; 77 unsigned long strbuf_fsync; 78 unsigned long strbuf_err_stat; 79 unsigned long strbuf_tag_diag; 80 unsigned long strbuf_line_diag; 81 unsigned long strbuf_ctxflush; 82 unsigned long strbuf_ctxmatch_base; 83 unsigned long strbuf_flushflag_pa; 84 volatile unsigned long *strbuf_flushflag; 85 volatile unsigned long __flushflag_buf[(64+(64-1)) / sizeof(long)]; 86 }; 87 88 int iommu_table_init(struct iommu *iommu, int tsbsize, 89 u32 dma_offset, u32 dma_addr_mask, 90 int numa_node); 91 92 #endif /* !(_SPARC64_IOMMU_H) */ 93