projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3042102a BS |
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), |
| 6339f669 PM |
45 | #ifdef CONFIG_MSM_DEBUG_UART |
| 46 | MSM_DEVICE(DEBUG_UART), | |
| 47 | #endif | |
| 3042102a | 48 | { |
| bcc0f6af | 49 | .virtual = (unsigned long) MSM_SHARED_RAM_BASE, |
| 3042102a BS |
50 | .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS), |
| 51 | .length = MSM_SHARED_RAM_SIZE, | |
| 52 | .type = MT_DEVICE, | |
| 53 | }, | |
| 54 | }; | |
| 55 | ||
| 56 | void __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 | ||
| 67 | void __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 | } |