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/init.h>
  22 #include <linux/io.h>
  23
  24 #include <mach/hardware.h>
  25 #include <asm/page.h>
  26 #include <mach/msm_iomap.h>
  27 #include <asm/mach/map.h>
  28
  29 #include <mach/board.h>
  30
  31 #define MSM_CHIP_DEVICE(name, chip) {                         \
  32                 .virtual = (unsigned long) MSM_##name##_BASE, \
  33                 .pfn = __phys_to_pfn(chip##_##name##_PHYS), \
  34                 .length = chip##_##name##_SIZE, \
  35                 .type = MT_DEVICE_NONSHARED, \
  36          }
  37
  38 #define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
  39
  40 #if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27) \
  41         || defined(CONFIG_ARCH_MSM7X25)
  42 static struct map_desc msm_io_desc[] __initdata = {
  43         MSM_DEVICE(VIC),
  44         MSM_CHIP_DEVICE(CSR, MSM7X00),
  45         MSM_DEVICE(DMOV),
  46         MSM_CHIP_DEVICE(GPIO1, MSM7X00),
  47         MSM_CHIP_DEVICE(GPIO2, MSM7X00),
  48         MSM_DEVICE(CLK_CTL),
  49 #ifdef CONFIG_MSM_DEBUG_UART
  50         MSM_DEVICE(DEBUG_UART),
  51 #endif
  52 #ifdef CONFIG_ARCH_MSM7X30
  53         MSM_DEVICE(GCC),
  54 #endif
  55         {
  56                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  57                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  58                 .length =   MSM_SHARED_RAM_SIZE,
  59                 .type =     MT_DEVICE,
  60         },
  61 };
  62
  63 void __init msm_map_common_io(void)
  64 {
  65         /* Make sure the peripheral register window is closed, since
  66          * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
  67          * pages are peripheral interface or not.
  68          */
  69         asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
  70         iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
  71 }
  72 #endif
  73
  74 #ifdef CONFIG_ARCH_QSD8X50
  75 static struct map_desc qsd8x50_io_desc[] __initdata = {
  76         MSM_DEVICE(VIC),
  77         MSM_CHIP_DEVICE(CSR, QSD8X50),
  78         MSM_DEVICE(DMOV),
  79         MSM_CHIP_DEVICE(GPIO1, QSD8X50),
  80         MSM_CHIP_DEVICE(GPIO2, QSD8X50),
  81         MSM_DEVICE(CLK_CTL),
  82         MSM_DEVICE(SIRC),
  83         MSM_DEVICE(SCPLL),
  84         MSM_DEVICE(AD5),
  85         MSM_DEVICE(MDC),
  86 #ifdef CONFIG_MSM_DEBUG_UART
  87         MSM_DEVICE(DEBUG_UART),
  88 #endif
  89         {
  90                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  91                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  92                 .length =   MSM_SHARED_RAM_SIZE,
  93                 .type =     MT_DEVICE,
  94         },
  95 };
  96
  97 void __init msm_map_qsd8x50_io(void)
  98 {
  99         iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
 100 }
 101 #endif /* CONFIG_ARCH_QSD8X50 */
 102
 103 #ifdef CONFIG_ARCH_MSM8X60
 104 static struct map_desc msm8x60_io_desc[] __initdata = {
 105         MSM_CHIP_DEVICE(QGIC_DIST, MSM8X60),
 106         MSM_CHIP_DEVICE(QGIC_CPU, MSM8X60),
 107         MSM_CHIP_DEVICE(TMR, MSM8X60),
 108         MSM_CHIP_DEVICE(TMR0, MSM8X60),
 109         MSM_DEVICE(ACC),
 110         MSM_DEVICE(GCC),
 111 };
 112
 113 void __init msm_map_msm8x60_io(void)
 114 {
 115         iotable_init(msm8x60_io_desc, ARRAY_SIZE(msm8x60_io_desc));
 116 }
 117 #endif /* CONFIG_ARCH_MSM8X60 */
 118
 119 #ifdef CONFIG_ARCH_MSM8960
 120 static struct map_desc msm8960_io_desc[] __initdata = {
 121         MSM_CHIP_DEVICE(QGIC_DIST, MSM8960),
 122         MSM_CHIP_DEVICE(QGIC_CPU, MSM8960),
 123         MSM_CHIP_DEVICE(TMR, MSM8960),
 124         MSM_CHIP_DEVICE(TMR0, MSM8960),
 125 };
 126
 127 void __init msm_map_msm8960_io(void)
 128 {
 129         iotable_init(msm8960_io_desc, ARRAY_SIZE(msm8960_io_desc));
 130 }
 131 #endif /* CONFIG_ARCH_MSM8960 */
 132
 133 #ifdef CONFIG_ARCH_MSM7X30
 134 static struct map_desc msm7x30_io_desc[] __initdata = {
 135         MSM_DEVICE(VIC),
 136         MSM_CHIP_DEVICE(CSR, MSM7X30),
 137         MSM_DEVICE(DMOV),
 138         MSM_CHIP_DEVICE(GPIO1, MSM7X30),
 139         MSM_CHIP_DEVICE(GPIO2, MSM7X30),
 140         MSM_DEVICE(CLK_CTL),
 141         MSM_DEVICE(CLK_CTL_SH2),
 142         MSM_DEVICE(AD5),
 143         MSM_DEVICE(MDC),
 144         MSM_DEVICE(ACC),
 145         MSM_DEVICE(SAW),
 146         MSM_DEVICE(GCC),
 147         MSM_DEVICE(TCSR),
 148 #ifdef CONFIG_MSM_DEBUG_UART
 149         MSM_DEVICE(DEBUG_UART),
 150 #endif
 151         {
 152                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 153                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 154                 .length =   MSM_SHARED_RAM_SIZE,
 155                 .type =     MT_DEVICE,
 156         },
 157 };
 158
 159 void __init msm_map_msm7x30_io(void)
 160 {
 161         iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
 162 }
 163 #endif /* CONFIG_ARCH_MSM7X30 */
 164
 165 void __iomem *
 166 __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 167 {
 168         if (mtype == MT_DEVICE) {
 169                 /* The peripherals in the 88000000 - D0000000 range
 170                  * are only accessible by type MT_DEVICE_NONSHARED.
 171                  * Adjust mtype as necessary to make this "just work."
 172                  */
 173                 if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
 174                         mtype = MT_DEVICE_NONSHARED;
 175         }
 176
 177         return __arm_ioremap_caller(phys_addr, size, mtype,
 178                 __builtin_return_address(0));
 179 }
 180 EXPORT_SYMBOL(__msm_ioremap);