aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-omap/io.c
blob: f1295fafcd31a2c3caa5253bcf08785b9799d3c0 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*
 * Common io.c file
 * This file is created by Russell King <rmk+kernel@arm.linux.org.uk>
 *
 * Copyright (C) 2009 Texas Instruments
 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/module.h>
#include <linux/io.h>
#include <linux/mm.h>

#include <plat/omap7xx.h>
#include <plat/omap1510.h>
#include <plat/omap16xx.h>
#include <plat/omap24xx.h>
#include <plat/omap34xx.h>
#include <plat/omap44xx.h>

#define BETWEEN(p,st,sz)	((p) >= (st) && (p) < ((st) + (sz)))
#define XLATE(p,pst,vst)	((void __iomem *)((p) - (pst) + (vst)))

/*
 * Intercept ioremap() requests for addresses in our fixed mapping regions.
 */
void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
{
#ifdef CONFIG_ARCH_OMAP1
	if (cpu_class_is_omap1()) {
		if (BETWEEN(p, OMAP1_IO_PHYS, OMAP1_IO_SIZE))
			return XLATE(p, OMAP1_IO_PHYS, OMAP1_IO_VIRT);
	}
	if (cpu_is_omap7xx()) {
		if (BETWEEN(p, OMAP7XX_DSP_BASE, OMAP7XX_DSP_SIZE))
			return XLATE(p, OMAP7XX_DSP_BASE, OMAP7XX_DSP_START);

		if (BETWEEN(p, OMAP7XX_DSPREG_BASE, OMAP7XX_DSPREG_SIZE))
			return XLATE(p, OMAP7XX_DSPREG_BASE,
					OMAP7XX_DSPREG_START);
	}
	if (cpu_is_omap15xx()) {
		if (BETWEEN(p, OMAP1510_DSP_BASE, OMAP1510_DSP_SIZE))
			return XLATE(p, OMAP1510_DSP_BASE, OMAP1510_DSP_START);

		if (BETWEEN(p, OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_SIZE))
			return XLATE(p, OMAP1510_DSPREG_BASE,
					OMAP1510_DSPREG_START);
	}
	if (cpu_is_omap16xx()) {
		if (BETWEEN(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_SIZE))
			return XLATE(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_START);

		if (BETWEEN(p, OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_SIZE))
			return XLATE(p, OMAP16XX_DSPREG_BASE,
					OMAP16XX_DSPREG_START);
	}
#endif
#ifdef CONFIG_ARCH_OMAP2
	if (cpu_is_omap24xx()) {
		if (BETWEEN(p, L3_24XX_PHYS, L3_24XX_SIZE))
			return XLATE(p, L3_24XX_PHYS, L3_24XX_VIRT);
		if (BETWEEN(p, L4_24XX_PHYS, L4_24XX_SIZE))
			return XLATE(p, L4_24XX_PHYS, L4_24XX_VIRT);
	}
	if (cpu_is_omap2420()) {
		if (BETWEEN(p, DSP_MEM_2420_PHYS, DSP_MEM_2420_SIZE))
			return XLATE(p, DSP_MEM_2420_PHYS, DSP_MEM_2420_VIRT);
		if (BETWEEN(p, DSP_IPI_2420_PHYS, DSP_IPI_2420_SIZE))
			return XLATE(p, DSP_IPI_2420_PHYS, DSP_IPI_2420_SIZE);
		if (BETWEEN(p, DSP_MMU_2420_PHYS, DSP_MMU_2420_SIZE))
			return XLATE(p, DSP_MMU_2420_PHYS, DSP_MMU_2420_VIRT);
	}
	if (cpu_is_omap2430()) {
		if (BETWEEN(p, L4_WK_243X_PHYS, L4_WK_243X_SIZE))
			return XLATE(p, L4_WK_243X_PHYS, L4_WK_243X_VIRT);
		if (BETWEEN(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_SIZE))
			return XLATE(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_VIRT);
		if (BETWEEN(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_SIZE))
			return XLATE(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_VIRT);
		if (BETWEEN(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_SIZE))
			return XLATE(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_VIRT);
	}
#endif
#ifdef CONFIG_ARCH_OMAP3
	if (cpu_is_omap34xx()) {
		if (BETWEEN(p, L3_34XX_PHYS, L3_34XX_SIZE))
			return XLATE(p, L3_34XX_PHYS, L3_34XX_VIRT);
		if (BETWEEN(p, L4_34XX_PHYS, L4_34XX_SIZE))
			return XLATE(p, L4_34XX_PHYS, L4_34XX_VIRT);
		if (BETWEEN(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_SIZE))
			return XLATE(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_VIRT);
		if (BETWEEN(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_SIZE))
			return XLATE(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_VIRT);
		if (BETWEEN(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_SIZE))
			return XLATE(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_VIRT);
		if (BETWEEN(p, L4_PER_34XX_PHYS, L4_PER_34XX_SIZE))
			return XLATE(p, L4_PER_34XX_PHYS, L4_PER_34XX_VIRT);
		if (BETWEEN(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_SIZE))
			return XLATE(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_VIRT);
	}
#endif
#ifdef CONFIG_ARCH_OMAP4
	if (cpu_is_omap44xx()) {
		if (BETWEEN(p, L3_44XX_PHYS, L3_44XX_SIZE))
			return XLATE(p, L3_44XX_PHYS, L3_44XX_VIRT);
		if (BETWEEN(p, L4_44XX_PHYS, L4_44XX_SIZE))
			return XLATE(p, L4_44XX_PHYS, L4_44XX_VIRT);
		if (BETWEEN(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_SIZE))
			return XLATE(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_VIRT);
		if (BETWEEN(p, OMAP44XX_EMIF1_PHYS, OMAP44XX_EMIF1_SIZE))
			return XLATE(p, OMAP44XX_EMIF1_PHYS,		\
							OMAP44XX_EMIF1_VIRT);
		if (BETWEEN(p, OMAP44XX_EMIF2_PHYS, OMAP44XX_EMIF2_SIZE))
			return XLATE(p, OMAP44XX_EMIF2_PHYS,		\
							OMAP44XX_EMIF2_VIRT);
		if (BETWEEN(p, OMAP44XX_DMM_PHYS, OMAP44XX_DMM_SIZE))
			return XLATE(p, OMAP44XX_DMM_PHYS, OMAP44XX_DMM_VIRT);
		if (BETWEEN(p, L4_PER_44XX_PHYS, L4_PER_44XX_SIZE))
			return XLATE(p, L4_PER_44XX_PHYS, L4_PER_44XX_VIRT);
		if (BETWEEN(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_SIZE))
			return XLATE(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_VIRT);
	}
#endif
	return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
}
EXPORT_SYMBOL(omap_ioremap);

void omap_iounmap(volatile void __iomem *addr)
{
	unsigned long virt = (unsigned long)addr;

	if (virt >= VMALLOC_START && virt < VMALLOC_END)
		__iounmap(addr);
}
EXPORT_SYMBOL(omap_iounmap);