fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sparc64 / iommu.h
blob9eac6676caf10a5887a749c6a1811f21f6d45b48
1 /* iommu.h: Definitions for the sun5 IOMMU.
3 * Copyright (C) 1996, 1999, 2007 David S. Miller (davem@davemloft.net)
4 */
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
20 struct iommu_arena {
21 unsigned long *map;
22 unsigned int hint;
23 unsigned int limit;
26 struct 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;
34 unsigned long iommu_flushinv;
35 unsigned long iommu_tags;
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;
45 struct 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)];
57 extern int iommu_table_init(struct iommu *iommu, int tsbsize,
58 u32 dma_offset, u32 dma_addr_mask);
60 #endif /* !(_SPARC64_IOMMU_H) */