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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> | |
fced80c7 | 21 | #include <linux/io.h> |
3042102a | 22 | |
a09e64fb | 23 | #include <mach/hardware.h> |
3042102a | 24 | #include <asm/page.h> |
a09e64fb | 25 | #include <mach/msm_iomap.h> |
3042102a BS |
26 | #include <asm/mach/map.h> |
27 | ||
a09e64fb | 28 | #include <mach/board.h> |
3042102a BS |
29 | |
30 | #define MSM_DEVICE(name) { \ | |
bcc0f6af | 31 | .virtual = (unsigned long) MSM_##name##_BASE, \ |
3042102a BS |
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), | |
3042102a BS |
42 | MSM_DEVICE(GPIO1), |
43 | MSM_DEVICE(GPIO2), | |
3042102a | 44 | MSM_DEVICE(CLK_CTL), |
3042102a | 45 | { |
bcc0f6af | 46 | .virtual = (unsigned long) MSM_SHARED_RAM_BASE, |
3042102a BS |
47 | .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS), |
48 | .length = MSM_SHARED_RAM_SIZE, | |
49 | .type = MT_DEVICE, | |
50 | }, | |
51 | }; | |
52 | ||
53 | void __init msm_map_common_io(void) | |
54 | { | |
55 | /* Make sure the peripheral register window is closed, since | |
56 | * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which | |
57 | * pages are peripheral interface or not. | |
58 | */ | |
59 | asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0)); | |
60 | ||
61 | iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc)); | |
62 | } | |
63 | ||
64 | void __iomem * | |
65 | __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) | |
66 | { | |
67 | if (mtype == MT_DEVICE) { | |
68 | /* The peripherals in the 88000000 - D0000000 range | |
69 | * are only accessable by type MT_DEVICE_NONSHARED. | |
70 | * Adjust mtype as necessary to make this "just work." | |
71 | */ | |
72 | if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000)) | |
73 | mtype = MT_DEVICE_NONSHARED; | |
74 | } | |
75 | ||
76 | return __arm_ioremap(phys_addr, size, mtype); | |
77 | } |