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
21struct iommu_arena {
22	unsigned long	*map;
23	unsigned int	hint;
24	unsigned int	limit;
25};
26
27struct 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
45struct 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
60int 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