1 /* $Id: iommu.h,v 1.10 2001/03/08 09:55:56 davem Exp $
2 * iommu.h: Definitions for the sun5 IOMMU.
4 * Copyright (C) 1996, 1999 David S. Miller (davem@caip.rutgers.edu)
6 #ifndef _SPARC64_IOMMU_H
7 #define _SPARC64_IOMMU_H
9 /* The format of an iopte in the page tables. */
10 #define IOPTE_VALID 0x8000000000000000UL
11 #define IOPTE_64K 0x2000000000000000UL
12 #define IOPTE_STBUF 0x1000000000000000UL
13 #define IOPTE_INTRA 0x0800000000000000UL
14 #define IOPTE_CONTEXT 0x07ff800000000000UL
15 #define IOPTE_PAGE 0x00007fffffffe000UL
16 #define IOPTE_CACHE 0x0000000000000010UL
17 #define IOPTE_WRITE 0x0000000000000002UL
19 #define IOMMU_NUM_CTXS 4096
29 struct iommu_arena arena
;
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_ctxflush
;
36 unsigned long write_complete_reg
;
37 unsigned long dummy_page
;
38 unsigned long dummy_page_pa
;
39 unsigned long ctx_lowest_free
;
40 DECLARE_BITMAP(ctx_bitmap
, IOMMU_NUM_CTXS
);
46 unsigned long strbuf_control
;
47 unsigned long strbuf_pflush
;
48 unsigned long strbuf_fsync
;
49 unsigned long strbuf_ctxflush
;
50 unsigned long strbuf_ctxmatch_base
;
51 unsigned long strbuf_flushflag_pa
;
52 volatile unsigned long *strbuf_flushflag
;
53 volatile unsigned long __flushflag_buf
[(64+(64-1)) / sizeof(long)];
56 #endif /* !(_SPARC_IOMMU_H) */
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