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1 | /* arch/arm/mach-msm/io.c |
2 | * | |
3 | * MSM7K io support | |
4 | * | |
5 | * Copyright (C) 2007 Google, Inc. | |
6 | * Author: Brian Swetland <swetland@google.com> | |
7 | * | |
8 | * This software is licensed under the terms of the GNU General Public | |
9 | * License version 2, as published by the Free Software Foundation, and | |
10 | * may be copied, distributed, and modified under those terms. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/init.h> | |
21 | ||
a09e64fb | 22 | #include <mach/hardware.h> |
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23 | #include <asm/io.h> |
24 | #include <asm/page.h> | |
a09e64fb | 25 | #include <mach/msm_iomap.h> |
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26 | #include <asm/mach/map.h> |
27 | ||
a09e64fb | 28 | #include <mach/board.h> |
3042102a BS |
29 | |
30 | #define MSM_DEVICE(name) { \ | |
31 | .virtual = MSM_##name##_BASE, \ | |
32 | .pfn = __phys_to_pfn(MSM_##name##_PHYS), \ | |
33 | .length = MSM_##name##_SIZE, \ | |
34 | .type = MT_DEVICE_NONSHARED, \ | |
35 | } | |
36 | ||
37 | static struct map_desc msm_io_desc[] __initdata = { | |
38 | MSM_DEVICE(VIC), | |
39 | MSM_DEVICE(CSR), | |
40 | MSM_DEVICE(GPT), | |
41 | MSM_DEVICE(DMOV), | |
42 | MSM_DEVICE(UART1), | |
43 | MSM_DEVICE(UART2), | |
44 | MSM_DEVICE(UART3), | |
45 | MSM_DEVICE(I2C), | |
46 | MSM_DEVICE(GPIO1), | |
47 | MSM_DEVICE(GPIO2), | |
48 | MSM_DEVICE(HSUSB), | |
49 | MSM_DEVICE(CLK_CTL), | |
50 | MSM_DEVICE(PMDH), | |
51 | MSM_DEVICE(EMDH), | |
52 | MSM_DEVICE(MDP), | |
53 | { | |
54 | .virtual = MSM_SHARED_RAM_BASE, | |
55 | .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS), | |
56 | .length = MSM_SHARED_RAM_SIZE, | |
57 | .type = MT_DEVICE, | |
58 | }, | |
59 | }; | |
60 | ||
61 | void __init msm_map_common_io(void) | |
62 | { | |
63 | /* Make sure the peripheral register window is closed, since | |
64 | * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which | |
65 | * pages are peripheral interface or not. | |
66 | */ | |
67 | asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0)); | |
68 | ||
69 | iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc)); | |
70 | } | |
71 | ||
72 | void __iomem * | |
73 | __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) | |
74 | { | |
75 | if (mtype == MT_DEVICE) { | |
76 | /* The peripherals in the 88000000 - D0000000 range | |
77 | * are only accessable by type MT_DEVICE_NONSHARED. | |
78 | * Adjust mtype as necessary to make this "just work." | |
79 | */ | |
80 | if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000)) | |
81 | mtype = MT_DEVICE_NONSHARED; | |
82 | } | |
83 | ||
84 | return __arm_ioremap(phys_addr, size, mtype); | |
85 | } |