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Brian Swetland30421022007-11-26 04:11:43 -08001/* 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>
Russell Kingfced80c2008-09-06 12:10:45 +010021#include <linux/io.h>
Brian Swetland30421022007-11-26 04:11:43 -080022
Russell Kinga09e64f2008-08-05 16:14:15 +010023#include <mach/hardware.h>
Brian Swetland30421022007-11-26 04:11:43 -080024#include <asm/page.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010025#include <mach/msm_iomap.h>
Brian Swetland30421022007-11-26 04:11:43 -080026#include <asm/mach/map.h>
27
Russell Kinga09e64f2008-08-05 16:14:15 +010028#include <mach/board.h>
Brian Swetland30421022007-11-26 04:11:43 -080029
30#define MSM_DEVICE(name) { \
Brian Swetlandbcc0f6a2008-09-10 14:00:53 -070031 .virtual = (unsigned long) MSM_##name##_BASE, \
Brian Swetland30421022007-11-26 04:11:43 -080032 .pfn = __phys_to_pfn(MSM_##name##_PHYS), \
33 .length = MSM_##name##_SIZE, \
34 .type = MT_DEVICE_NONSHARED, \
35 }
36
37static struct map_desc msm_io_desc[] __initdata = {
38 MSM_DEVICE(VIC),
39 MSM_DEVICE(CSR),
40 MSM_DEVICE(GPT),
41 MSM_DEVICE(DMOV),
Brian Swetland30421022007-11-26 04:11:43 -080042 MSM_DEVICE(GPIO1),
43 MSM_DEVICE(GPIO2),
Brian Swetland30421022007-11-26 04:11:43 -080044 MSM_DEVICE(CLK_CTL),
Pavel Machek6339f662009-11-02 11:48:29 +010045#ifdef CONFIG_MSM_DEBUG_UART
46 MSM_DEVICE(DEBUG_UART),
47#endif
Brian Swetland30421022007-11-26 04:11:43 -080048 {
Brian Swetlandbcc0f6a2008-09-10 14:00:53 -070049 .virtual = (unsigned long) MSM_SHARED_RAM_BASE,
Brian Swetland30421022007-11-26 04:11:43 -080050 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
51 .length = MSM_SHARED_RAM_SIZE,
52 .type = MT_DEVICE,
53 },
54};
55
56void __init msm_map_common_io(void)
57{
58 /* Make sure the peripheral register window is closed, since
59 * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
60 * pages are peripheral interface or not.
61 */
62 asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
63
64 iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
65}
66
67void __iomem *
68__msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
69{
70 if (mtype == MT_DEVICE) {
71 /* The peripherals in the 88000000 - D0000000 range
72 * are only accessable by type MT_DEVICE_NONSHARED.
73 * Adjust mtype as necessary to make this "just work."
74 */
75 if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
76 mtype = MT_DEVICE_NONSHARED;
77 }
78
79 return __arm_ioremap(phys_addr, size, mtype);
80}