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 #include <linux/export.h>
  24
  25 #include <mach/hardware.h>
  26 #include <asm/page.h>
  27 #include <mach/msm_iomap.h>
  28 #include <asm/mach/map.h>
  29
  30 #include <mach/board.h>
  31
  32 #define MSM_CHIP_DEVICE(name, chip) {                         \
  33                 .virtual = (unsigned long) MSM_##name##_BASE, \
  34                 .pfn = __phys_to_pfn(chip##_##name##_PHYS), \
  35                 .length = chip##_##name##_SIZE, \
  36                 .type = MT_DEVICE_NONSHARED, \
  37          }
  38
  39 #define MSM_DEVICE(name) MSM_CHIP_DEVICE(name, MSM)
  40
  41 #if defined(CONFIG_ARCH_MSM7X00A) || defined(CONFIG_ARCH_MSM7X27) \
  42         || defined(CONFIG_ARCH_MSM7X25)
  43 static struct map_desc msm_io_desc[] __initdata = {
  44         MSM_DEVICE(VIC),
  45         MSM_CHIP_DEVICE(CSR, MSM7X00),
  46         MSM_DEVICE(DMOV),
  47         MSM_CHIP_DEVICE(GPIO1, MSM7X00),
  48         MSM_CHIP_DEVICE(GPIO2, MSM7X00),
  49         MSM_DEVICE(CLK_CTL),
  50 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  51         defined(CONFIG_DEBUG_MSM_UART3)
  52         MSM_DEVICE(DEBUG_UART),
  53 #endif
  54 #ifdef CONFIG_ARCH_MSM7X30
  55         MSM_DEVICE(GCC),
  56 #endif
  57         {
  58                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  59                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  60                 .length =   MSM_SHARED_RAM_SIZE,
  61                 .type =     MT_DEVICE,
  62         },
  63 };
  64
  65 void __init msm_map_common_io(void)
  66 {
  67         /* Make sure the peripheral register window is closed, since
  68          * we will use PTE flags (TEX[1]=1,B=0,C=1) to determine which
  69          * pages are peripheral interface or not.
  70          */
  71         asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
  72         iotable_init(msm_io_desc, ARRAY_SIZE(msm_io_desc));
  73 }
  74 #endif
  75
  76 #ifdef CONFIG_ARCH_QSD8X50
  77 static struct map_desc qsd8x50_io_desc[] __initdata = {
  78         MSM_DEVICE(VIC),
  79         MSM_CHIP_DEVICE(CSR, QSD8X50),
  80         MSM_DEVICE(DMOV),
  81         MSM_CHIP_DEVICE(GPIO1, QSD8X50),
  82         MSM_CHIP_DEVICE(GPIO2, QSD8X50),
  83         MSM_DEVICE(CLK_CTL),
  84         MSM_DEVICE(SIRC),
  85         MSM_DEVICE(SCPLL),
  86         MSM_DEVICE(AD5),
  87         MSM_DEVICE(MDC),
  88 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
  89         defined(CONFIG_DEBUG_MSM_UART3)
  90         MSM_DEVICE(DEBUG_UART),
  91 #endif
  92         {
  93                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
  94                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
  95                 .length =   MSM_SHARED_RAM_SIZE,
  96                 .type =     MT_DEVICE,
  97         },
  98 };
  99
 100 void __init msm_map_qsd8x50_io(void)
 101 {
 102         iotable_init(qsd8x50_io_desc, ARRAY_SIZE(qsd8x50_io_desc));
 103 }
 104 #endif /* CONFIG_ARCH_QSD8X50 */
 105
 106 #ifdef CONFIG_ARCH_MSM8X60
 107 static struct map_desc msm8x60_io_desc[] __initdata = {
 108         MSM_CHIP_DEVICE(QGIC_DIST, MSM8X60),
 109         MSM_CHIP_DEVICE(QGIC_CPU, MSM8X60),
 110         MSM_CHIP_DEVICE(TMR, MSM8X60),
 111         MSM_CHIP_DEVICE(TMR0, MSM8X60),
 112         MSM_DEVICE(ACC),
 113         MSM_DEVICE(GCC),
 114 #ifdef CONFIG_DEBUG_MSM8660_UART
 115         MSM_DEVICE(DEBUG_UART),
 116 #endif
 117 };
 118
 119 void __init msm_map_msm8x60_io(void)
 120 {
 121         iotable_init(msm8x60_io_desc, ARRAY_SIZE(msm8x60_io_desc));
 122 }
 123 #endif /* CONFIG_ARCH_MSM8X60 */
 124
 125 #ifdef CONFIG_ARCH_MSM8960
 126 static struct map_desc msm8960_io_desc[] __initdata = {
 127         MSM_CHIP_DEVICE(QGIC_DIST, MSM8960),
 128         MSM_CHIP_DEVICE(QGIC_CPU, MSM8960),
 129         MSM_CHIP_DEVICE(TMR, MSM8960),
 130         MSM_CHIP_DEVICE(TMR0, MSM8960),
 131 #ifdef CONFIG_DEBUG_MSM8960_UART
 132         MSM_DEVICE(DEBUG_UART),
 133 #endif
 134 };
 135
 136 void __init msm_map_msm8960_io(void)
 137 {
 138         iotable_init(msm8960_io_desc, ARRAY_SIZE(msm8960_io_desc));
 139 }
 140 #endif /* CONFIG_ARCH_MSM8960 */
 141
 142 #ifdef CONFIG_ARCH_MSM7X30
 143 static struct map_desc msm7x30_io_desc[] __initdata = {
 144         MSM_DEVICE(VIC),
 145         MSM_CHIP_DEVICE(CSR, MSM7X30),
 146         MSM_DEVICE(DMOV),
 147         MSM_CHIP_DEVICE(GPIO1, MSM7X30),
 148         MSM_CHIP_DEVICE(GPIO2, MSM7X30),
 149         MSM_DEVICE(CLK_CTL),
 150         MSM_DEVICE(CLK_CTL_SH2),
 151         MSM_DEVICE(AD5),
 152         MSM_DEVICE(MDC),
 153         MSM_DEVICE(ACC),
 154         MSM_DEVICE(SAW),
 155         MSM_DEVICE(GCC),
 156         MSM_DEVICE(TCSR),
 157 #if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
 158         defined(CONFIG_DEBUG_MSM_UART3)
 159         MSM_DEVICE(DEBUG_UART),
 160 #endif
 161         {
 162                 .virtual =  (unsigned long) MSM_SHARED_RAM_BASE,
 163                 .pfn = __phys_to_pfn(MSM_SHARED_RAM_PHYS),
 164                 .length =   MSM_SHARED_RAM_SIZE,
 165                 .type =     MT_DEVICE,
 166         },
 167 };
 168
 169 void __init msm_map_msm7x30_io(void)
 170 {
 171         iotable_init(msm7x30_io_desc, ARRAY_SIZE(msm7x30_io_desc));
 172 }
 173 #endif /* CONFIG_ARCH_MSM7X30 */
 174
 175 void __iomem *
 176 __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 177 {
 178         if (mtype == MT_DEVICE) {
 179                 /* The peripherals in the 88000000 - D0000000 range
 180                  * are only accessible by type MT_DEVICE_NONSHARED.
 181                  * Adjust mtype as necessary to make this "just work."
 182                  */
 183                 if ((phys_addr >= 0x88000000) && (phys_addr < 0xD0000000))
 184                         mtype = MT_DEVICE_NONSHARED;
 185         }
 186
 187         return __arm_ioremap_caller(phys_addr, size, mtype,
 188                 __builtin_return_address(0));
 189 }
 190 EXPORT_SYMBOL(__msm_ioremap);