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4
5#ifndef _SPARC_IOMMU_H
6#define _SPARC_IOMMU_H
7
8#include <asm/page.h>
9#include <asm/bitext.h>
10
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18
19
20
21struct iommu_regs {
22
23 volatile unsigned long control;
24 volatile unsigned long base;
25 volatile unsigned long _unused1[3];
26 volatile unsigned long tlbflush;
27 volatile unsigned long pageflush;
28 volatile unsigned long _unused2[1017];
29
30 volatile unsigned long afsr;
31 volatile unsigned long afar;
32 volatile unsigned long _unused3[2];
33 volatile unsigned long sbuscfg0;
34 volatile unsigned long sbuscfg1;
35 volatile unsigned long sbuscfg2;
36 volatile unsigned long sbuscfg3;
37 volatile unsigned long mfsr;
38 volatile unsigned long mfar;
39 volatile unsigned long _unused4[1014];
40
41 volatile unsigned long mid;
42};
43
44#define IOMMU_CTRL_IMPL 0xf0000000
45#define IOMMU_CTRL_VERS 0x0f000000
46#define IOMMU_CTRL_RNGE 0x0000001c
47#define IOMMU_RNGE_16MB 0x00000000
48#define IOMMU_RNGE_32MB 0x00000004
49#define IOMMU_RNGE_64MB 0x00000008
50#define IOMMU_RNGE_128MB 0x0000000c
51#define IOMMU_RNGE_256MB 0x00000010
52#define IOMMU_RNGE_512MB 0x00000014
53#define IOMMU_RNGE_1GB 0x00000018
54#define IOMMU_RNGE_2GB 0x0000001c
55#define IOMMU_CTRL_ENAB 0x00000001
56
57#define IOMMU_AFSR_ERR 0x80000000
58#define IOMMU_AFSR_LE 0x40000000
59#define IOMMU_AFSR_TO 0x20000000
60#define IOMMU_AFSR_BE 0x10000000
61#define IOMMU_AFSR_SIZE 0x0e000000
62#define IOMMU_AFSR_S 0x01000000
63#define IOMMU_AFSR_RESV 0x00f00000
64#define IOMMU_AFSR_ME 0x00080000
65#define IOMMU_AFSR_RD 0x00040000
66#define IOMMU_AFSR_FAV 0x00020000
67
68#define IOMMU_SBCFG_SAB30 0x00010000
69#define IOMMU_SBCFG_BA16 0x00000004
70#define IOMMU_SBCFG_BA8 0x00000002
71#define IOMMU_SBCFG_BYPASS 0x00000001
72
73
74
75#define IOMMU_MFSR_ERR 0x80000000
76#define IOMMU_MFSR_S 0x01000000
77#define IOMMU_MFSR_CPU 0x00800000
78#define IOMMU_MFSR_ME 0x00080000
79#define IOMMU_MFSR_PERR 0x00006000
80
81
82#define IOMMU_MFSR_BM 0x00001000
83#define IOMMU_MFSR_C 0x00000800
84#define IOMMU_MFSR_RTYP 0x000000f0
85
86#define IOMMU_MID_SBAE 0x001f0000
87#define IOMMU_MID_SE 0x00100000
88#define IOMMU_MID_SB3 0x00080000
89#define IOMMU_MID_SB2 0x00040000
90#define IOMMU_MID_SB1 0x00020000
91#define IOMMU_MID_SB0 0x00010000
92#define IOMMU_MID_MID 0x0000000f
93
94
95#define IOPTE_PAGE 0x07ffff00
96#define IOPTE_CACHE 0x00000080
97#define IOPTE_WRITE 0x00000004
98#define IOPTE_VALID 0x00000002
99#define IOPTE_WAZ 0x00000001
100
101struct iommu_struct {
102 struct iommu_regs __iomem *regs;
103 iopte_t *page_table;
104
105 unsigned long start;
106 unsigned long end;
107
108 struct bit_map usemap;
109};
110
111static inline void iommu_invalidate(struct iommu_regs __iomem *regs)
112{
113 sbus_writel(0, ®s->tlbflush);
114}
115
116static inline void iommu_invalidate_page(struct iommu_regs __iomem *regs, unsigned long ba)
117{
118 sbus_writel(ba & PAGE_MASK, ®s->pageflush);
119}
120
121#endif
122