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
|
/* arch/arm/mach-msm/io.c
*
* MSM7K io support
*
* Copyright (C) 2007 Google, Inc.
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/page.h>
#include <mach/msm_iomap.h>
#include <asm/mach/map.h>
#include <mach/board.h>
#define MSM_DEVICE(name) { \
.virtual = (unsigned long) MSM_##name##_BASE, \
.pfn = __phys_to_pfn(MSM_##name##_PHYS), \
.length = MSM_##name##_SIZE, \
.type = MT_DEVICE_NONSHARED, \
}
static struct map_desc msm_io_desc[] __initdata = {
MSM_DEVICE(VIC),
MSM_DEVICE(CSR),
MSM_DEVICE(GPT),
MSM_DEVICE(DMOV),
MSM_DEVICE(GPIO1),
MSM_DEVICE(GPIO2),
MSM_DEVICE(CLK_CTL),
#ifdef CONFIG_MSM_DEBUG_UART
MSM_DEVICE(DEBUG_UART),
#endif
{
.virtual = (unsigned long) MSM_SHARED_RAM_BASE,
.pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
.length = MSM_SHARED_RAM_SIZE,
.type = MT_DEVICE,
},
};
void __init msm_map_common_io(void)
{
/* Make sure the peripheral register window is closed, since
* we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
* pages are peripheral interface or not.
*/
asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
}
void __iomem *
__msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
{
if (mtype == MT_DEVICE) {
/* The peripherals in the 88000000 - D0000000 range
* are only accessable by type MT_DEVICE_NONSHARED.
* Adjust mtype as necessary to make this "just work."
*/
if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
mtype = MT_DEVICE_NONSHARED;
}
return __arm_ioremap_caller(phys_addr, size, mtype,
__builtin_return_address(0));
}
|
