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gerrit-public.fairphone.software / kernel / msm-4.19 / 66875088098f314af1a4d9e0cc47e617d643bffd / . / include / asm-sparc64 / iommu.h
blob: e199594a1e9bcbde2733cecc9367568b99d0affe [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/* $Id: iommu.h,v 1.10 2001/03/08 09:55:56 davem Exp $
2 * iommu.h: Definitions for the sun5 IOMMU.
3 *
4 * Copyright (C) 1996, 1999 David S. Miller (davem@caip.rutgers.edu)
5 */
6#ifndef _SPARC64_IOMMU_H
7#define _SPARC64_IOMMU_H
8
9/* The format of an iopte in the page tables. */
David S. Miller9b3627f2007-04-24 23:51:18 -0700[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]18
David S. Miller7c963ad2005-05-31 16:57:59 -0700[diff] [blame]19#define IOMMU_NUM_CTXS 4096
20
David S. Miller9b3627f2007-04-24 23:51:18 -0700[diff] [blame]21struct iommu_arena {
22 unsigned long *map;
23 unsigned int hint;
24 unsigned int limit;
25};
26
David S. Miller66875082007-04-25 00:12:09 -0700[diff] [blame^]27struct iommu {
28 spinlock_t lock;
29 struct iommu_arena arena;
30 iopte_t *page_table;
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);
41 u32 dma_addr_mask;
42};
43
44struct strbuf {
45 int strbuf_enabled;
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)];
54};
55
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]56#endif /* !(_SPARC_IOMMU_H) */