1 /* iommu.h: Definitions for the sun5 IOMMU.
3 * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net)
5 #ifndef _SPARC64_IOMMU_H
6 #define _SPARC64_IOMMU_H
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
18 #define IOMMU_NUM_CTXS 4096
19 #include <linux/iommu-common.h>
27 #define ATU_64_SPACE_SIZE 0x800000000 /* 32G */
29 /* Data structures for SPARC ATU architecture */
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 */
46 struct atu_ranges *ranges;
47 struct atu_iotsb *iotsb;
48 struct iommu_map_table tbl;
55 struct iommu_map_table tbl;
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);
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)];
88 int iommu_table_init(struct iommu *iommu, int tsbsize,
89 u32 dma_offset, u32 dma_addr_mask,
92 #endif /* !(_SPARC64_IOMMU_H) */