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-rw-r--r--arch/arm/plat-omap/include/mach/iommu2.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/iommu2.h b/arch/arm/plat-omap/include/mach/iommu2.h
new file mode 100644
index 000000000000..10ad05f410e9
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/iommu2.h
@@ -0,0 +1,96 @@
1/*
2 * omap iommu: omap2 architecture specific definitions
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#ifndef __MACH_IOMMU2_H
14#define __MACH_IOMMU2_H
15
16#include <linux/io.h>
17
18/*
19 * MMU Register offsets
20 */
21#define MMU_REVISION 0x00
22#define MMU_SYSCONFIG 0x10
23#define MMU_SYSSTATUS 0x14
24#define MMU_IRQSTATUS 0x18
25#define MMU_IRQENABLE 0x1c
26#define MMU_WALKING_ST 0x40
27#define MMU_CNTL 0x44
28#define MMU_FAULT_AD 0x48
29#define MMU_TTB 0x4c
30#define MMU_LOCK 0x50
31#define MMU_LD_TLB 0x54
32#define MMU_CAM 0x58
33#define MMU_RAM 0x5c
34#define MMU_GFLUSH 0x60
35#define MMU_FLUSH_ENTRY 0x64
36#define MMU_READ_CAM 0x68
37#define MMU_READ_RAM 0x6c
38#define MMU_EMU_FAULT_AD 0x70
39
40#define MMU_REG_SIZE 256
41
42/*
43 * MMU Register bit definitions
44 */
45#define MMU_LOCK_BASE_SHIFT 10
46#define MMU_LOCK_BASE_MASK (0x1f << MMU_LOCK_BASE_SHIFT)
47#define MMU_LOCK_BASE(x) \
48 ((x & MMU_LOCK_BASE_MASK) >> MMU_LOCK_BASE_SHIFT)
49
50#define MMU_LOCK_VICT_SHIFT 4
51#define MMU_LOCK_VICT_MASK (0x1f << MMU_LOCK_VICT_SHIFT)
52#define MMU_LOCK_VICT(x) \
53 ((x & MMU_LOCK_VICT_MASK) >> MMU_LOCK_VICT_SHIFT)
54
55#define MMU_CAM_VATAG_SHIFT 12
56#define MMU_CAM_VATAG_MASK \
57 ((~0UL >> MMU_CAM_VATAG_SHIFT) << MMU_CAM_VATAG_SHIFT)
58#define MMU_CAM_P (1 << 3)
59#define MMU_CAM_V (1 << 2)
60#define MMU_CAM_PGSZ_MASK 3
61#define MMU_CAM_PGSZ_1M (0 << 0)
62#define MMU_CAM_PGSZ_64K (1 << 0)
63#define MMU_CAM_PGSZ_4K (2 << 0)
64#define MMU_CAM_PGSZ_16M (3 << 0)
65
66#define MMU_RAM_PADDR_SHIFT 12
67#define MMU_RAM_PADDR_MASK \
68 ((~0UL >> MMU_RAM_PADDR_SHIFT) << MMU_RAM_PADDR_SHIFT)
69#define MMU_RAM_ENDIAN_SHIFT 9
70#define MMU_RAM_ENDIAN_MASK (1 << MMU_RAM_ENDIAN_SHIFT)
71#define MMU_RAM_ENDIAN_BIG (1 << MMU_RAM_ENDIAN_SHIFT)
72#define MMU_RAM_ENDIAN_LITTLE (0 << MMU_RAM_ENDIAN_SHIFT)
73#define MMU_RAM_ELSZ_SHIFT 7
74#define MMU_RAM_ELSZ_MASK (3 << MMU_RAM_ELSZ_SHIFT)
75#define MMU_RAM_ELSZ_8 (0 << MMU_RAM_ELSZ_SHIFT)
76#define MMU_RAM_ELSZ_16 (1 << MMU_RAM_ELSZ_SHIFT)
77#define MMU_RAM_ELSZ_32 (2 << MMU_RAM_ELSZ_SHIFT)
78#define MMU_RAM_ELSZ_NONE (3 << MMU_RAM_ELSZ_SHIFT)
79#define MMU_RAM_MIXED_SHIFT 6
80#define MMU_RAM_MIXED_MASK (1 << MMU_RAM_MIXED_SHIFT)
81#define MMU_RAM_MIXED MMU_RAM_MIXED_MASK
82
83/*
84 * register accessors
85 */
86static inline u32 iommu_read_reg(struct iommu *obj, size_t offs)
87{
88 return __raw_readl(obj->regbase + offs);
89}
90
91static inline void iommu_write_reg(struct iommu *obj, u32 val, size_t offs)
92{
93 __raw_writel(val, obj->regbase + offs);
94}
95
96#endif /* __MACH_IOMMU2_H */