LXR linux/arch/arm/mach-msm/io.c

   1/* arch/arm/mach-msm/io.c
   2 *
   3 * MSM7K, QSD io support
   4 *
   5 * Copyright (C) 2007 Google, Inc.
   6 * Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved.
   7 * Author: Brian Swetland <swetland@google.com>
   8 *
   9 * This software is licensed under the terms of the GNU General Public
  10 * License version 2, as published by the Free Software Foundation, and
  11 * may be copied, distributed, and modified under those terms.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 */
  19
  20#include <linux/kernel.h>
  21#include <linux/bug.h>
  22#include <linux/init.h>
  23#include <linux/io.h>
  24#include <linux/export.h>
  25
  26#include <mach/hardware.h>
  27#include <asm/page.h>
  28#include <mach/msm_iomap.h>
  29#include <asm/mach/map.h>
  30
  31#include "common.h"
  32
  33#define MSM_CHIP_DEVICE_TYPE(name, chip, mem_type) {                          \
  34                .virtual = (unsigned long) MSM_##name##_BASE, \
  35                .pfn = __phys_to_pfn(chip##_##name##_PHYS), \
  36                .length = chip##_##name##_SIZE, \
  37                .type = mem_type, \
  38         }
  39
  40#define MSM_DEVICE_TYPE(name, mem_type) \
  41                MSM_CHIP_DEVICE_TYPE(name, MSM, mem_type)
  42#define MSM_CHIP_DEVICE(name, chip) \
  43                MSM_CHIP_DEVICE_TYPE(name, chip, MT_DEVICE)
  44#define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
  45
  46#if defined(CONFIG_ARCH_MSM7X00A)
  47static struct map_desc msm_io_desc[] __initdata = {
  48        MSM_DEVICE_TYPE(VIC, MT_DEVICE_NONSHARED),
  49        MSM_CHIP_DEVICE_TYPE(CSR, MSM7X00, MT_DEVICE_NONSHARED),
  50        MSM_DEVICE_TYPE(DMOV, MT_DEVICE_NONSHARED),
  51        MSM_CHIP_DEVICE_TYPE(GPIO1, MSM7X00, MT_DEVICE_NONSHARED),
  52        MSM_CHIP_DEVICE_TYPE(GPIO2, MSM7X00, MT_DEVICE_NONSHARED),
  53        MSM_DEVICE_TYPE(CLK_CTL, MT_DEVICE_NONSHARED),
  54        {
  55                .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  56                .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  57                .length =   MSM_SHARED_RAM_SIZE,
  58                .type =     MT_DEVICE,
  59        },
  60#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  61                defined(CONFIG_DEBUG_MSM_UART3)
  62        {
  63                /* Must be last: virtual and pfn filled in by debug_ll_addr() */
  64                .length = SZ_4K,
  65                .type = MT_DEVICE_NONSHARED,
  66        }
  67#endif
  68};
  69
  70void __init msm_map_common_io(void)
  71{
  72        size_t size = ARRAY_SIZE(msm_io_desc);
  73
  74        /* Make sure the peripheral register window is closed, since
  75         * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
  76         * pages are peripheral interface or not.
  77         */
  78        asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
  79#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  80                defined(CONFIG_DEBUG_MSM_UART3)
  81        debug_ll_addr(&msm_io_desc[size - 1].pfn,
  82                      &msm_io_desc[size - 1].virtual);
  83        msm_io_desc[size - 1].pfn = __phys_to_pfn(msm_io_desc[size - 1].pfn);
  84#endif
  85        iotable_init(msm_io_desc, size);
  86}
  87#endif
  88
  89#ifdef CONFIG_ARCH_QSD8X50
  90static struct map_desc qsd8x50_io_desc[] __initdata = {
  91        MSM_DEVICE(VIC),
  92        MSM_CHIP_DEVICE(CSR, QSD8X50),
  93        MSM_DEVICE(DMOV),
  94        MSM_CHIP_DEVICE(GPIO1, QSD8X50),
  95        MSM_CHIP_DEVICE(GPIO2, QSD8X50),
  96        MSM_DEVICE(CLK_CTL),
  97        MSM_DEVICE(SIRC),
  98        MSM_DEVICE(SCPLL),
  99        MSM_DEVICE(AD5),
 100        MSM_DEVICE(MDC),
 101        {
 102                .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 103                .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 104                .length =   MSM_SHARED_RAM_SIZE,
 105                .type =     MT_DEVICE,
 106        },
 107};
 108
 109void __init msm_map_qsd8x50_io(void)
 110{
 111        debug_ll_io_init();
 112        iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
 113}
 114#endif /* CONFIG_ARCH_QSD8X50 */
 115
 116#ifdef CONFIG_ARCH_MSM7X30
 117static struct map_desc msm7x30_io_desc[] __initdata = {
 118        MSM_DEVICE(VIC),
 119        MSM_CHIP_DEVICE(CSR, MSM7X30),
 120        MSM_DEVICE(DMOV),
 121        MSM_CHIP_DEVICE(GPIO1, MSM7X30),
 122        MSM_CHIP_DEVICE(GPIO2, MSM7X30),
 123        MSM_DEVICE(CLK_CTL),
 124        MSM_DEVICE(CLK_CTL_SH2),
 125        MSM_DEVICE(AD5),
 126        MSM_DEVICE(MDC),
 127        MSM_DEVICE(ACC),
 128        MSM_DEVICE(SAW),
 129        MSM_DEVICE(GCC),
 130        MSM_DEVICE(TCSR),
 131        {
 132                .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 133                .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 134                .length =   MSM_SHARED_RAM_SIZE,
 135                .type =     MT_DEVICE,
 136        },
 137};
 138
 139void __init msm_map_msm7x30_io(void)
 140{
 141        debug_ll_io_init();
 142        iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
 143}
 144#endif /* CONFIG_ARCH_MSM7X30 */
 145
 146#ifdef CONFIG_ARCH_MSM7X00A
 147void __iomem *__msm_ioremap_caller(phys_addr_t phys_addr, size_t size,
 148                                   unsigned int mtype, void *caller)
 149{
 150        if (mtype == MT_DEVICE) {
 151                /* The peripherals in the 88000000 - D0000000 range
 152                 * are only accessible by type MT_DEVICE_NONSHARED.
 153                 * Adjust mtype as necessary to make this "just work."
 154                 */
 155                if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
 156                        mtype = MT_DEVICE_NONSHARED;
 157        }
 158
 159        return __arm_ioremap_caller(phys_addr, size, mtype, caller);
 160}
 161#endif
 162