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gerrit-public.fairphone.software / kernel / msm / d393aa0326436efd3cb800916b08cdac4dd1091a / . / include / asm-sparc64 / iommu.h
blob: 9eac6676caf10a5887a749c6a1811f21f6d45b48 [file] [log] [blame]
David S. Millerad7ad572007-07-27 22:39:14 -0700[diff] [blame]1/* iommu.h: Definitions for the sun5 IOMMU.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2 *
David S. Millerad7ad572007-07-27 22:39:14 -0700[diff] [blame]3 * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]4 */
5#ifndef _SPARC64_IOMMU_H
6#define _SPARC64_IOMMU_H
7
8/* The format of an iopte in the page tables. */
David S. Miller9b3627f2007-04-24 23:51:18 -0700[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]17
David S. Miller7c963ad2005-05-31 16:57:59 -0700[diff] [blame]18#define IOMMU_NUM_CTXS 4096
19
David S. Miller9b3627f2007-04-24 23:51:18 -0700[diff] [blame]20struct iommu_arena {
21 unsigned long *map;
22 unsigned int hint;
23 unsigned int limit;
24};
25
David S. Miller66875082007-04-25 00:12:09 -0700[diff] [blame]26struct iommu {
27 spinlock_t lock;
28 struct iommu_arena arena;
29 iopte_t *page_table;
30 u32 page_table_map_base;
31 unsigned long iommu_control;
32 unsigned long iommu_tsbbase;
33 unsigned long iommu_flush;
David S. Miller861fe902007-05-02 17:31:36 -0700[diff] [blame]34 unsigned long iommu_flushinv;
David S. Millerad7ad572007-07-27 22:39:14 -0700[diff] [blame]35 unsigned long iommu_tags;
David S. Miller66875082007-04-25 00:12:09 -0700[diff] [blame]36 unsigned long iommu_ctxflush;
37 unsigned long write_complete_reg;
38 unsigned long dummy_page;
39 unsigned long dummy_page_pa;
40 unsigned long ctx_lowest_free;
41 DECLARE_BITMAP(ctx_bitmap, IOMMU_NUM_CTXS);
42 u32 dma_addr_mask;
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_ctxflush;
51 unsigned long strbuf_ctxmatch_base;
52 unsigned long strbuf_flushflag_pa;
53 volatile unsigned long *strbuf_flushflag;
54 volatile unsigned long __flushflag_buf[(64+(64-1)) / sizeof(long)];
55};
56
David S. Millerad7ad572007-07-27 22:39:14 -0700[diff] [blame]57extern int iommu_table_init(struct iommu *iommu, int tsbsize,
58 u32 dma_offset, u32 dma_addr_mask);
59
60#endif /* !(_SPARC64_IOMMU_H) */